]>
Commit | Line | Data |
---|---|---|
5bd4f169 | 1 | /* PowerPC64-specific support for 64-bit ELF. |
d87bef3a | 2 | Copyright (C) 1999-2023 Free Software Foundation, Inc. |
5bd4f169 AM |
3 | Written by Linus Nordberg, Swox AB <info@swox.com>, |
4 | based on elf32-ppc.c by Ian Lance Taylor. | |
32ca9640 | 5 | Largely rewritten by Alan Modra. |
5bd4f169 | 6 | |
ae9a127f | 7 | This file is part of BFD, the Binary File Descriptor library. |
5bd4f169 | 8 | |
ae9a127f NC |
9 | This program is free software; you can redistribute it and/or modify |
10 | it under the terms of the GNU General Public License as published by | |
cd123cb7 | 11 | the Free Software Foundation; either version 3 of the License, or |
ae9a127f | 12 | (at your option) any later version. |
5bd4f169 | 13 | |
ae9a127f NC |
14 | This program is distributed in the hope that it will be useful, |
15 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
16 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
17 | GNU General Public License for more details. | |
5bd4f169 | 18 | |
4ce794b7 AM |
19 | You should have received a copy of the GNU General Public License along |
20 | with this program; if not, write to the Free Software Foundation, Inc., | |
3e110533 | 21 | 51 Franklin Street - Fifth Floor, Boston, MA 02110-1301, USA. */ |
5bd4f169 | 22 | |
cd123cb7 | 23 | |
4ce794b7 AM |
24 | /* The 64-bit PowerPC ELF ABI may be found at |
25 | http://www.linuxbase.org/spec/ELF/ppc64/PPC-elf64abi.txt, and | |
26 | http://www.linuxbase.org/spec/ELF/ppc64/spec/book1.html */ | |
5bd4f169 | 27 | |
c09c8b42 AM |
28 | /* The assembler should generate a full set of section symbols even |
29 | when they appear unused. The linux kernel build tool recordmcount | |
30 | needs them. */ | |
31 | #define TARGET_KEEP_UNUSED_SECTION_SYMBOLS true | |
4bd7c902 | 32 | |
3db64b00 | 33 | #include "sysdep.h" |
183e98be | 34 | #include <stdarg.h> |
5bd4f169 | 35 | #include "bfd.h" |
5bd4f169 AM |
36 | #include "bfdlink.h" |
37 | #include "libbfd.h" | |
38 | #include "elf-bfd.h" | |
04c9666a | 39 | #include "elf/ppc64.h" |
5d1634d7 | 40 | #include "elf64-ppc.h" |
58d180e8 | 41 | #include "dwarf2.h" |
5bd4f169 | 42 | |
bb294208 AM |
43 | /* All users of this file have bfd_octets_per_byte (abfd, sec) == 1. */ |
44 | #define OCTETS_PER_BYTE(ABFD, SEC) 1 | |
45 | ||
805fc799 | 46 | static bfd_reloc_status_type ppc64_elf_ha_reloc |
4ce794b7 | 47 | (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **); |
2441e016 AM |
48 | static bfd_reloc_status_type ppc64_elf_branch_reloc |
49 | (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **); | |
805fc799 | 50 | static bfd_reloc_status_type ppc64_elf_brtaken_reloc |
4ce794b7 | 51 | (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **); |
805fc799 | 52 | static bfd_reloc_status_type ppc64_elf_sectoff_reloc |
4ce794b7 | 53 | (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **); |
805fc799 | 54 | static bfd_reloc_status_type ppc64_elf_sectoff_ha_reloc |
4ce794b7 | 55 | (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **); |
805fc799 | 56 | static bfd_reloc_status_type ppc64_elf_toc_reloc |
4ce794b7 | 57 | (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **); |
805fc799 | 58 | static bfd_reloc_status_type ppc64_elf_toc_ha_reloc |
4ce794b7 | 59 | (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **); |
805fc799 | 60 | static bfd_reloc_status_type ppc64_elf_toc64_reloc |
4ce794b7 | 61 | (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **); |
5663e321 AM |
62 | static bfd_reloc_status_type ppc64_elf_prefix_reloc |
63 | (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **); | |
805fc799 | 64 | static bfd_reloc_status_type ppc64_elf_unhandled_reloc |
4ce794b7 | 65 | (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **); |
2441e016 | 66 | static bfd_vma opd_entry_value |
0a1b45a2 | 67 | (asection *, bfd_vma, asection **, bfd_vma *, bool); |
5bd4f169 | 68 | |
6d00b590 | 69 | #define TARGET_LITTLE_SYM powerpc_elf64_le_vec |
ad8e1ba5 | 70 | #define TARGET_LITTLE_NAME "elf64-powerpcle" |
6d00b590 | 71 | #define TARGET_BIG_SYM powerpc_elf64_vec |
ad8e1ba5 AM |
72 | #define TARGET_BIG_NAME "elf64-powerpc" |
73 | #define ELF_ARCH bfd_arch_powerpc | |
ae95ffa6 | 74 | #define ELF_TARGET_ID PPC64_ELF_DATA |
ad8e1ba5 AM |
75 | #define ELF_MACHINE_CODE EM_PPC64 |
76 | #define ELF_MAXPAGESIZE 0x10000 | |
702d1671 | 77 | #define ELF_COMMONPAGESIZE 0x1000 |
ad8e1ba5 AM |
78 | #define elf_info_to_howto ppc64_elf_info_to_howto |
79 | ||
80 | #define elf_backend_want_got_sym 0 | |
81 | #define elf_backend_want_plt_sym 0 | |
82 | #define elf_backend_plt_alignment 3 | |
83 | #define elf_backend_plt_not_loaded 1 | |
ad8e1ba5 | 84 | #define elf_backend_got_header_size 8 |
5474d94f | 85 | #define elf_backend_want_dynrelro 1 |
ad8e1ba5 AM |
86 | #define elf_backend_can_gc_sections 1 |
87 | #define elf_backend_can_refcount 1 | |
88 | #define elf_backend_rela_normal 1 | |
64f52338 | 89 | #define elf_backend_dtrel_excludes_plt 1 |
6bfdb61b | 90 | #define elf_backend_default_execstack 0 |
ad8e1ba5 | 91 | |
e717da7e | 92 | #define bfd_elf64_mkobject ppc64_elf_mkobject |
6313825c | 93 | #define bfd_elf64_bfd_free_cached_info ppc64_elf_free_cached_info |
ad8e1ba5 | 94 | #define bfd_elf64_bfd_reloc_type_lookup ppc64_elf_reloc_type_lookup |
aa374f67 | 95 | #define bfd_elf64_bfd_reloc_name_lookup ppc64_elf_reloc_name_lookup |
ee67d69a AM |
96 | #define bfd_elf64_bfd_merge_private_bfd_data ppc64_elf_merge_private_bfd_data |
97 | #define bfd_elf64_bfd_print_private_bfd_data ppc64_elf_print_private_bfd_data | |
ad8e1ba5 AM |
98 | #define bfd_elf64_new_section_hook ppc64_elf_new_section_hook |
99 | #define bfd_elf64_bfd_link_hash_table_create ppc64_elf_link_hash_table_create | |
90e3cdf2 | 100 | #define bfd_elf64_get_synthetic_symtab ppc64_elf_get_synthetic_symtab |
aa374f67 | 101 | #define bfd_elf64_bfd_link_just_syms ppc64_elf_link_just_syms |
8c5b4e52 | 102 | #define bfd_elf64_bfd_gc_sections ppc64_elf_gc_sections |
ad8e1ba5 AM |
103 | |
104 | #define elf_backend_object_p ppc64_elf_object_p | |
d37c89e5 AM |
105 | #define elf_backend_grok_prstatus ppc64_elf_grok_prstatus |
106 | #define elf_backend_grok_psinfo ppc64_elf_grok_psinfo | |
183e98be | 107 | #define elf_backend_write_core_note ppc64_elf_write_core_note |
9d19e4fd | 108 | #define elf_backend_create_dynamic_sections _bfd_elf_create_dynamic_sections |
ad8e1ba5 | 109 | #define elf_backend_copy_indirect_symbol ppc64_elf_copy_indirect_symbol |
555cd476 | 110 | #define elf_backend_add_symbol_hook ppc64_elf_add_symbol_hook |
f6c7c3e8 | 111 | #define elf_backend_check_directives ppc64_elf_before_check_relocs |
e5034e59 | 112 | #define elf_backend_notice_as_needed ppc64_elf_notice_as_needed |
8387904d | 113 | #define elf_backend_archive_symbol_lookup ppc64_elf_archive_symbol_lookup |
ad8e1ba5 | 114 | #define elf_backend_check_relocs ppc64_elf_check_relocs |
c0e331c7 | 115 | #define elf_backend_relocs_compatible _bfd_elf_relocs_compatible |
74f0fb50 | 116 | #define elf_backend_gc_keep ppc64_elf_gc_keep |
64d03ab5 | 117 | #define elf_backend_gc_mark_dynamic_ref ppc64_elf_gc_mark_dynamic_ref |
ad8e1ba5 | 118 | #define elf_backend_gc_mark_hook ppc64_elf_gc_mark_hook |
ad8e1ba5 AM |
119 | #define elf_backend_adjust_dynamic_symbol ppc64_elf_adjust_dynamic_symbol |
120 | #define elf_backend_hide_symbol ppc64_elf_hide_symbol | |
9f296da3 | 121 | #define elf_backend_maybe_function_sym ppc64_elf_maybe_function_sym |
c9405344 | 122 | #define elf_backend_always_size_sections ppc64_elf_edit |
ad8e1ba5 | 123 | #define elf_backend_size_dynamic_sections ppc64_elf_size_dynamic_sections |
a345bc8d | 124 | #define elf_backend_hash_symbol ppc64_elf_hash_symbol |
74541ad4 | 125 | #define elf_backend_init_index_section _bfd_elf_init_2_index_sections |
60124e18 | 126 | #define elf_backend_action_discarded ppc64_elf_action_discarded |
ad8e1ba5 AM |
127 | #define elf_backend_relocate_section ppc64_elf_relocate_section |
128 | #define elf_backend_finish_dynamic_symbol ppc64_elf_finish_dynamic_symbol | |
129 | #define elf_backend_reloc_type_class ppc64_elf_reloc_type_class | |
130 | #define elf_backend_finish_dynamic_sections ppc64_elf_finish_dynamic_sections | |
754021d0 | 131 | #define elf_backend_link_output_symbol_hook ppc64_elf_output_symbol_hook |
29ef7005 | 132 | #define elf_backend_special_sections ppc64_elf_special_sections |
bf577467 | 133 | #define elf_backend_section_flags ppc64_elf_section_flags |
6911b7dc | 134 | #define elf_backend_merge_symbol_attribute ppc64_elf_merge_symbol_attribute |
8c5b4e52 | 135 | #define elf_backend_merge_symbol ppc64_elf_merge_symbol |
bce964aa | 136 | #define elf_backend_get_reloc_section bfd_get_section_by_name |
ad8e1ba5 | 137 | |
5bd4f169 AM |
138 | /* The name of the dynamic interpreter. This is put in the .interp |
139 | section. */ | |
140 | #define ELF_DYNAMIC_INTERPRETER "/usr/lib/ld.so.1" | |
141 | ||
142 | /* The size in bytes of an entry in the procedure linkage table. */ | |
b9e5796b | 143 | #define PLT_ENTRY_SIZE(htab) (htab->opd_abi ? 24 : 8) |
2d7ad24e | 144 | #define LOCAL_PLT_ENTRY_SIZE(htab) (htab->opd_abi ? 16 : 8) |
5bd4f169 AM |
145 | |
146 | /* The initial size of the plt reserved for the dynamic linker. */ | |
b9e5796b | 147 | #define PLT_INITIAL_ENTRY_SIZE(htab) (htab->opd_abi ? 24 : 16) |
5bd4f169 | 148 | |
a078d95a AM |
149 | /* Offsets to some stack save slots. */ |
150 | #define STK_LR 16 | |
151 | #define STK_TOC(htab) (htab->opd_abi ? 40 : 24) | |
eb8d7fda | 152 | /* This one is dodgy. ELFv2 does not have a linker word, so use the |
a078d95a AM |
153 | CR save slot. Used only by optimised __tls_get_addr call stub, |
154 | relying on __tls_get_addr_opt not saving CR.. */ | |
155 | #define STK_LINKER(htab) (htab->opd_abi ? 32 : 8) | |
156 | ||
5bd4f169 | 157 | /* TOC base pointers offset from start of TOC. */ |
411e1bfb | 158 | #define TOC_BASE_OFF 0x8000 |
a27e685f AM |
159 | /* TOC base alignment. */ |
160 | #define TOC_BASE_ALIGN 256 | |
411e1bfb AM |
161 | |
162 | /* Offset of tp and dtp pointers from start of TLS block. */ | |
163 | #define TP_OFFSET 0x7000 | |
164 | #define DTP_OFFSET 0x8000 | |
5bd4f169 | 165 | |
ad8e1ba5 AM |
166 | /* .plt call stub instructions. The normal stub is like this, but |
167 | sometimes the .plt entry crosses a 64k boundary and we need to | |
71a39c98 | 168 | insert an addi to adjust r11. */ |
a078d95a | 169 | #define STD_R2_0R1 0xf8410000 /* std %r2,0+40(%r1) */ |
71a39c98 AM |
170 | #define ADDIS_R11_R2 0x3d620000 /* addis %r11,%r2,xxx@ha */ |
171 | #define LD_R12_0R11 0xe98b0000 /* ld %r12,xxx+0@l(%r11) */ | |
172 | #define MTCTR_R12 0x7d8903a6 /* mtctr %r12 */ | |
173 | #define LD_R2_0R11 0xe84b0000 /* ld %r2,xxx+8@l(%r11) */ | |
174 | #define LD_R11_0R11 0xe96b0000 /* ld %r11,xxx+16@l(%r11) */ | |
5d1634d7 AM |
175 | #define BCTR 0x4e800420 /* bctr */ |
176 | ||
07d6d2b8 | 177 | #define ADDI_R11_R11 0x396b0000 /* addi %r11,%r11,off@l */ |
05d0e962 AM |
178 | #define ADDI_R12_R11 0x398b0000 /* addi %r12,%r11,off@l */ |
179 | #define ADDI_R12_R12 0x398c0000 /* addi %r12,%r12,off@l */ | |
07d6d2b8 AM |
180 | #define ADDIS_R2_R2 0x3c420000 /* addis %r2,%r2,off@ha */ |
181 | #define ADDI_R2_R2 0x38420000 /* addi %r2,%r2,off@l */ | |
182 | ||
183 | #define XOR_R2_R12_R12 0x7d826278 /* xor %r2,%r12,%r12 */ | |
184 | #define ADD_R11_R11_R2 0x7d6b1214 /* add %r11,%r11,%r2 */ | |
185 | #define XOR_R11_R12_R12 0x7d8b6278 /* xor %r11,%r12,%r12 */ | |
186 | #define ADD_R2_R2_R11 0x7c425a14 /* add %r2,%r2,%r11 */ | |
187 | #define CMPLDI_R2_0 0x28220000 /* cmpldi %r2,0 */ | |
188 | #define BNECTR 0x4ca20420 /* bnectr+ */ | |
189 | #define BNECTR_P4 0x4ce20420 /* bnectr+ */ | |
794e51c0 | 190 | |
71a39c98 | 191 | #define LD_R12_0R2 0xe9820000 /* ld %r12,xxx+0(%r2) */ |
ac2df442 | 192 | #define LD_R11_0R2 0xe9620000 /* ld %r11,xxx+0(%r2) */ |
07d6d2b8 | 193 | #define LD_R2_0R2 0xe8420000 /* ld %r2,xxx+0(%r2) */ |
ac2df442 | 194 | |
07d6d2b8 AM |
195 | #define LD_R2_0R1 0xe8410000 /* ld %r2,0(%r1) */ |
196 | #define LD_R2_0R12 0xe84c0000 /* ld %r2,0(%r12) */ | |
197 | #define ADD_R2_R2_R12 0x7c426214 /* add %r2,%r2,%r12 */ | |
ad8e1ba5 | 198 | |
04bdff6a | 199 | #define LI_R11_0 0x39600000 /* li %r11,0 */ |
07d6d2b8 | 200 | #define LIS_R2 0x3c400000 /* lis %r2,xxx@ha */ |
04bdff6a | 201 | #define LIS_R11 0x3d600000 /* lis %r11,xxx@ha */ |
05d0e962 | 202 | #define LIS_R12 0x3d800000 /* lis %r12,xxx@ha */ |
006589cf AM |
203 | #define ADDIS_R2_R12 0x3c4c0000 /* addis %r2,%r12,xxx@ha */ |
204 | #define ADDIS_R12_R2 0x3d820000 /* addis %r12,%r2,xxx@ha */ | |
05d0e962 | 205 | #define ADDIS_R12_R11 0x3d8b0000 /* addis %r12,%r11,xxx@ha */ |
a345bc8d | 206 | #define ADDIS_R12_R12 0x3d8c0000 /* addis %r12,%r12,xxx@ha */ |
05d0e962 | 207 | #define ORIS_R12_R12_0 0x658c0000 /* oris %r12,%r12,xxx@hi */ |
04bdff6a | 208 | #define ORI_R11_R11_0 0x616b0000 /* ori %r11,%r11,xxx@l */ |
05d0e962 | 209 | #define ORI_R12_R12_0 0x618c0000 /* ori %r12,%r12,xxx@l */ |
07d6d2b8 | 210 | #define LD_R12_0R12 0xe98c0000 /* ld %r12,xxx@l(%r12) */ |
04bdff6a | 211 | #define SLDI_R11_R11_34 0x796b1746 /* sldi %r11,%r11,34 */ |
05d0e962 AM |
212 | #define SLDI_R12_R12_32 0x799c07c6 /* sldi %r12,%r12,32 */ |
213 | #define LDX_R12_R11_R12 0x7d8b602a /* ldx %r12,%r11,%r12 */ | |
214 | #define ADD_R12_R11_R12 0x7d8b6214 /* add %r12,%r11,%r12 */ | |
04bdff6a AM |
215 | #define PADDI_R12_PC 0x0610000039800000ULL |
216 | #define PLD_R12_PC 0x04100000e5800000ULL | |
5663e321 | 217 | #define PNOP 0x0700000000000000ULL |
a345bc8d | 218 | |
3cd7c7d7 AM |
219 | /* __glink_PLTresolve stub instructions. We enter with the index in |
220 | R0 for ELFv1, and the address of a glink branch in R12 for ELFv2. */ | |
9e390558 | 221 | #define GLINK_PLTRESOLVE_SIZE(htab) \ |
3cd7c7d7 | 222 | (8u + (htab->opd_abi ? 11 * 4 : htab->has_plt_localentry0 ? 14 * 4 : 13 * 4)) |
ee4bf8d2 AM |
223 | /* 0: */ |
224 | /* .quad plt0-1f */ | |
225 | /* __glink: */ | |
226 | #define MFLR_R12 0x7d8802a6 /* mflr %12 */ | |
227 | #define BCL_20_31 0x429f0005 /* bcl 20,31,1f */ | |
228 | /* 1: */ | |
229 | #define MFLR_R11 0x7d6802a6 /* mflr %11 */ | |
71a39c98 | 230 | /* ld %2,(0b-1b)(%11) */ |
ee4bf8d2 | 231 | #define MTLR_R12 0x7d8803a6 /* mtlr %12 */ |
71a39c98 AM |
232 | #define ADD_R11_R2_R11 0x7d625a14 /* add %11,%2,%11 */ |
233 | /* ld %12,0(%11) */ | |
234 | /* ld %2,8(%11) */ | |
235 | /* mtctr %12 */ | |
236 | /* ld %11,16(%11) */ | |
ee4bf8d2 | 237 | /* bctr */ |
3cd7c7d7 AM |
238 | |
239 | #define MFLR_R0 0x7c0802a6 /* mflr %r0 */ | |
240 | #define MTLR_R0 0x7c0803a6 /* mtlr %r0 */ | |
241 | #define SUB_R12_R12_R11 0x7d8b6050 /* subf %r12,%r11,%r12 */ | |
242 | #define ADDI_R0_R12 0x380c0000 /* addi %r0,%r12,0 */ | |
243 | #define SRDI_R0_R0_2 0x7800f082 /* rldicl %r0,%r0,62,2 */ | |
244 | #define LD_R0_0R11 0xe80b0000 /* ld %r0,0(%r11) */ | |
245 | #define ADD_R11_R0_R11 0x7d605a14 /* add %r11,%r0,%r11 */ | |
5d1634d7 AM |
246 | |
247 | /* Pad with this. */ | |
248 | #define NOP 0x60000000 | |
249 | ||
721956f4 AM |
250 | /* Some other nops. */ |
251 | #define CROR_151515 0x4def7b82 | |
252 | #define CROR_313131 0x4ffffb82 | |
253 | ||
cedb70c5 | 254 | /* .glink entries for the first 32k functions are two instructions. */ |
5d1634d7 AM |
255 | #define LI_R0_0 0x38000000 /* li %r0,0 */ |
256 | #define B_DOT 0x48000000 /* b . */ | |
257 | ||
258 | /* After that, we need two instructions to load the index, followed by | |
259 | a branch. */ | |
260 | #define LIS_R0_0 0x3c000000 /* lis %r0,0 */ | |
10ed1bba | 261 | #define ORI_R0_R0_0 0x60000000 /* ori %r0,%r0,0 */ |
41bd81ab | 262 | |
deb0e272 AM |
263 | /* Instructions used by the save and restore reg functions. */ |
264 | #define STD_R0_0R1 0xf8010000 /* std %r0,0(%r1) */ | |
265 | #define STD_R0_0R12 0xf80c0000 /* std %r0,0(%r12) */ | |
266 | #define LD_R0_0R1 0xe8010000 /* ld %r0,0(%r1) */ | |
267 | #define LD_R0_0R12 0xe80c0000 /* ld %r0,0(%r12) */ | |
82bd7b59 AM |
268 | #define STFD_FR0_0R1 0xd8010000 /* stfd %fr0,0(%r1) */ |
269 | #define LFD_FR0_0R1 0xc8010000 /* lfd %fr0,0(%r1) */ | |
deb0e272 AM |
270 | #define LI_R12_0 0x39800000 /* li %r12,0 */ |
271 | #define STVX_VR0_R12_R0 0x7c0c01ce /* stvx %v0,%r12,%r0 */ | |
272 | #define LVX_VR0_R12_R0 0x7c0c00ce /* lvx %v0,%r12,%r0 */ | |
273 | #define MTLR_R0 0x7c0803a6 /* mtlr %r0 */ | |
82bd7b59 AM |
274 | #define BLR 0x4e800020 /* blr */ |
275 | ||
41bd81ab AM |
276 | /* Since .opd is an array of descriptors and each entry will end up |
277 | with identical R_PPC64_RELATIVE relocs, there is really no need to | |
278 | propagate .opd relocs; The dynamic linker should be taught to | |
1e2f5b6e | 279 | relocate .opd without reloc entries. */ |
41bd81ab AM |
280 | #ifndef NO_OPD_RELOCS |
281 | #define NO_OPD_RELOCS 0 | |
282 | #endif | |
810d4e75 | 283 | |
a4b6fadd AM |
284 | #ifndef ARRAY_SIZE |
285 | #define ARRAY_SIZE(a) (sizeof (a) / sizeof ((a)[0])) | |
286 | #endif | |
287 | ||
810d4e75 AM |
288 | static inline int |
289 | abiversion (bfd *abfd) | |
290 | { | |
291 | return elf_elfheader (abfd)->e_flags & EF_PPC64_ABI; | |
292 | } | |
293 | ||
294 | static inline void | |
295 | set_abiversion (bfd *abfd, int ver) | |
296 | { | |
297 | elf_elfheader (abfd)->e_flags &= ~EF_PPC64_ABI; | |
298 | elf_elfheader (abfd)->e_flags |= ver & EF_PPC64_ABI; | |
299 | } | |
6313825c AM |
300 | |
301 | #define is_ppc64_elf(bfd) \ | |
302 | (bfd_get_flavour (bfd) == bfd_target_elf_flavour \ | |
303 | && elf_object_id (bfd) == PPC64_ELF_DATA) | |
5bd4f169 AM |
304 | \f |
305 | /* Relocation HOWTO's. */ | |
46807bf4 AM |
306 | /* Like other ELF RELA targets that don't apply multiple |
307 | field-altering relocations to the same localation, src_mask is | |
308 | always zero and pcrel_offset is the same as pc_relative. | |
309 | PowerPC can always use a zero bitpos, even when the field is not at | |
310 | the LSB. For example, a REL24 could use rightshift=2, bisize=24 | |
311 | and bitpos=2 which matches the ABI description, or as we do here, | |
312 | rightshift=0, bitsize=26 and bitpos=0. */ | |
313 | #define HOW(type, size, bitsize, mask, rightshift, pc_relative, \ | |
314 | complain, special_func) \ | |
315 | HOWTO (type, rightshift, size, bitsize, pc_relative, 0, \ | |
316 | complain_overflow_ ## complain, special_func, \ | |
0a1b45a2 | 317 | #type, false, 0, mask, pc_relative) |
46807bf4 | 318 | |
04c9666a | 319 | static reloc_howto_type *ppc64_elf_howto_table[(int) R_PPC64_max]; |
5bd4f169 | 320 | |
f3185997 NC |
321 | static reloc_howto_type ppc64_elf_howto_raw[] = |
322 | { | |
5bd4f169 | 323 | /* This reloc does nothing. */ |
c94cb026 | 324 | HOW (R_PPC64_NONE, 0, 0, 0, 0, false, dont, |
46807bf4 | 325 | bfd_elf_generic_reloc), |
5bd4f169 AM |
326 | |
327 | /* A standard 32 bit relocation. */ | |
c94cb026 | 328 | HOW (R_PPC64_ADDR32, 4, 32, 0xffffffff, 0, false, bitfield, |
46807bf4 | 329 | bfd_elf_generic_reloc), |
5bd4f169 AM |
330 | |
331 | /* An absolute 26 bit branch; the lower two bits must be zero. | |
332 | FIXME: we don't check that, we just clear them. */ | |
c94cb026 | 333 | HOW (R_PPC64_ADDR24, 4, 26, 0x03fffffc, 0, false, bitfield, |
46807bf4 | 334 | bfd_elf_generic_reloc), |
5bd4f169 AM |
335 | |
336 | /* A standard 16 bit relocation. */ | |
c94cb026 | 337 | HOW (R_PPC64_ADDR16, 2, 16, 0xffff, 0, false, bitfield, |
46807bf4 | 338 | bfd_elf_generic_reloc), |
5bd4f169 AM |
339 | |
340 | /* A 16 bit relocation without overflow. */ | |
c94cb026 | 341 | HOW (R_PPC64_ADDR16_LO, 2, 16, 0xffff, 0, false, dont, |
46807bf4 | 342 | bfd_elf_generic_reloc), |
5bd4f169 AM |
343 | |
344 | /* Bits 16-31 of an address. */ | |
c94cb026 | 345 | HOW (R_PPC64_ADDR16_HI, 2, 16, 0xffff, 16, false, signed, |
46807bf4 | 346 | bfd_elf_generic_reloc), |
5bd4f169 AM |
347 | |
348 | /* Bits 16-31 of an address, plus 1 if the contents of the low 16 | |
349 | bits, treated as a signed number, is negative. */ | |
c94cb026 | 350 | HOW (R_PPC64_ADDR16_HA, 2, 16, 0xffff, 16, false, signed, |
46807bf4 | 351 | ppc64_elf_ha_reloc), |
5bd4f169 AM |
352 | |
353 | /* An absolute 16 bit branch; the lower two bits must be zero. | |
354 | FIXME: we don't check that, we just clear them. */ | |
c94cb026 | 355 | HOW (R_PPC64_ADDR14, 4, 16, 0x0000fffc, 0, false, signed, |
46807bf4 | 356 | ppc64_elf_branch_reloc), |
5bd4f169 AM |
357 | |
358 | /* An absolute 16 bit branch, for which bit 10 should be set to | |
359 | indicate that the branch is expected to be taken. The lower two | |
360 | bits must be zero. */ | |
c94cb026 | 361 | HOW (R_PPC64_ADDR14_BRTAKEN, 4, 16, 0x0000fffc, 0, false, signed, |
46807bf4 | 362 | ppc64_elf_brtaken_reloc), |
5bd4f169 AM |
363 | |
364 | /* An absolute 16 bit branch, for which bit 10 should be set to | |
365 | indicate that the branch is not expected to be taken. The lower | |
366 | two bits must be zero. */ | |
c94cb026 | 367 | HOW (R_PPC64_ADDR14_BRNTAKEN, 4, 16, 0x0000fffc, 0, false, signed, |
46807bf4 | 368 | ppc64_elf_brtaken_reloc), |
5bd4f169 AM |
369 | |
370 | /* A relative 26 bit branch; the lower two bits must be zero. */ | |
c94cb026 | 371 | HOW (R_PPC64_REL24, 4, 26, 0x03fffffc, 0, true, signed, |
46807bf4 | 372 | ppc64_elf_branch_reloc), |
5bd4f169 | 373 | |
05d0e962 | 374 | /* A variant of R_PPC64_REL24, used when r2 is not the toc pointer. */ |
c94cb026 | 375 | HOW (R_PPC64_REL24_NOTOC, 4, 26, 0x03fffffc, 0, true, signed, |
46807bf4 | 376 | ppc64_elf_branch_reloc), |
05d0e962 | 377 | |
7aba54da | 378 | /* Another variant, when p10 insns can't be used on stubs. */ |
c94cb026 | 379 | HOW (R_PPC64_REL24_P9NOTOC, 4, 26, 0x03fffffc, 0, true, signed, |
7aba54da AM |
380 | ppc64_elf_branch_reloc), |
381 | ||
5bd4f169 | 382 | /* A relative 16 bit branch; the lower two bits must be zero. */ |
c94cb026 | 383 | HOW (R_PPC64_REL14, 4, 16, 0x0000fffc, 0, true, signed, |
46807bf4 | 384 | ppc64_elf_branch_reloc), |
5bd4f169 AM |
385 | |
386 | /* A relative 16 bit branch. Bit 10 should be set to indicate that | |
387 | the branch is expected to be taken. The lower two bits must be | |
388 | zero. */ | |
c94cb026 | 389 | HOW (R_PPC64_REL14_BRTAKEN, 4, 16, 0x0000fffc, 0, true, signed, |
46807bf4 | 390 | ppc64_elf_brtaken_reloc), |
5bd4f169 AM |
391 | |
392 | /* A relative 16 bit branch. Bit 10 should be set to indicate that | |
393 | the branch is not expected to be taken. The lower two bits must | |
394 | be zero. */ | |
c94cb026 | 395 | HOW (R_PPC64_REL14_BRNTAKEN, 4, 16, 0x0000fffc, 0, true, signed, |
46807bf4 | 396 | ppc64_elf_brtaken_reloc), |
5bd4f169 AM |
397 | |
398 | /* Like R_PPC64_ADDR16, but referring to the GOT table entry for the | |
399 | symbol. */ | |
c94cb026 | 400 | HOW (R_PPC64_GOT16, 2, 16, 0xffff, 0, false, signed, |
46807bf4 | 401 | ppc64_elf_unhandled_reloc), |
5bd4f169 AM |
402 | |
403 | /* Like R_PPC64_ADDR16_LO, but referring to the GOT table entry for | |
404 | the symbol. */ | |
c94cb026 | 405 | HOW (R_PPC64_GOT16_LO, 2, 16, 0xffff, 0, false, dont, |
46807bf4 | 406 | ppc64_elf_unhandled_reloc), |
5bd4f169 AM |
407 | |
408 | /* Like R_PPC64_ADDR16_HI, but referring to the GOT table entry for | |
409 | the symbol. */ | |
c94cb026 | 410 | HOW (R_PPC64_GOT16_HI, 2, 16, 0xffff, 16, false, signed, |
46807bf4 | 411 | ppc64_elf_unhandled_reloc), |
5bd4f169 AM |
412 | |
413 | /* Like R_PPC64_ADDR16_HA, but referring to the GOT table entry for | |
414 | the symbol. */ | |
c94cb026 | 415 | HOW (R_PPC64_GOT16_HA, 2, 16, 0xffff, 16, false, signed, |
46807bf4 | 416 | ppc64_elf_unhandled_reloc), |
5bd4f169 AM |
417 | |
418 | /* This is used only by the dynamic linker. The symbol should exist | |
419 | both in the object being run and in some shared library. The | |
420 | dynamic linker copies the data addressed by the symbol from the | |
421 | shared library into the object, because the object being | |
422 | run has to have the data at some particular address. */ | |
5d0feb98 | 423 | HOW (R_PPC64_COPY, 0, 0, 0, 0, false, dont, |
46807bf4 | 424 | ppc64_elf_unhandled_reloc), |
5bd4f169 AM |
425 | |
426 | /* Like R_PPC64_ADDR64, but used when setting global offset table | |
427 | entries. */ | |
c94cb026 | 428 | HOW (R_PPC64_GLOB_DAT, 8, 64, 0xffffffffffffffffULL, 0, false, dont, |
46807bf4 | 429 | ppc64_elf_unhandled_reloc), |
5bd4f169 AM |
430 | |
431 | /* Created by the link editor. Marks a procedure linkage table | |
432 | entry for a symbol. */ | |
5d0feb98 | 433 | HOW (R_PPC64_JMP_SLOT, 0, 0, 0, 0, false, dont, |
46807bf4 | 434 | ppc64_elf_unhandled_reloc), |
5bd4f169 AM |
435 | |
436 | /* Used only by the dynamic linker. When the object is run, this | |
437 | doubleword64 is set to the load address of the object, plus the | |
438 | addend. */ | |
c94cb026 | 439 | HOW (R_PPC64_RELATIVE, 8, 64, 0xffffffffffffffffULL, 0, false, dont, |
46807bf4 | 440 | bfd_elf_generic_reloc), |
5bd4f169 AM |
441 | |
442 | /* Like R_PPC64_ADDR32, but may be unaligned. */ | |
c94cb026 | 443 | HOW (R_PPC64_UADDR32, 4, 32, 0xffffffff, 0, false, bitfield, |
46807bf4 | 444 | bfd_elf_generic_reloc), |
5bd4f169 AM |
445 | |
446 | /* Like R_PPC64_ADDR16, but may be unaligned. */ | |
c94cb026 | 447 | HOW (R_PPC64_UADDR16, 2, 16, 0xffff, 0, false, bitfield, |
46807bf4 | 448 | bfd_elf_generic_reloc), |
5bd4f169 AM |
449 | |
450 | /* 32-bit PC relative. */ | |
c94cb026 | 451 | HOW (R_PPC64_REL32, 4, 32, 0xffffffff, 0, true, signed, |
46807bf4 | 452 | bfd_elf_generic_reloc), |
5bd4f169 | 453 | |
10ed1bba | 454 | /* 32-bit relocation to the symbol's procedure linkage table. */ |
c94cb026 | 455 | HOW (R_PPC64_PLT32, 4, 32, 0xffffffff, 0, false, bitfield, |
46807bf4 | 456 | ppc64_elf_unhandled_reloc), |
5bd4f169 AM |
457 | |
458 | /* 32-bit PC relative relocation to the symbol's procedure linkage table. | |
459 | FIXME: R_PPC64_PLTREL32 not supported. */ | |
c94cb026 | 460 | HOW (R_PPC64_PLTREL32, 4, 32, 0xffffffff, 0, true, signed, |
46807bf4 | 461 | ppc64_elf_unhandled_reloc), |
5bd4f169 AM |
462 | |
463 | /* Like R_PPC64_ADDR16_LO, but referring to the PLT table entry for | |
464 | the symbol. */ | |
c94cb026 | 465 | HOW (R_PPC64_PLT16_LO, 2, 16, 0xffff, 0, false, dont, |
46807bf4 | 466 | ppc64_elf_unhandled_reloc), |
5bd4f169 AM |
467 | |
468 | /* Like R_PPC64_ADDR16_HI, but referring to the PLT table entry for | |
469 | the symbol. */ | |
c94cb026 | 470 | HOW (R_PPC64_PLT16_HI, 2, 16, 0xffff, 16, false, signed, |
46807bf4 | 471 | ppc64_elf_unhandled_reloc), |
5bd4f169 AM |
472 | |
473 | /* Like R_PPC64_ADDR16_HA, but referring to the PLT table entry for | |
474 | the symbol. */ | |
c94cb026 | 475 | HOW (R_PPC64_PLT16_HA, 2, 16, 0xffff, 16, false, signed, |
46807bf4 | 476 | ppc64_elf_unhandled_reloc), |
5bd4f169 | 477 | |
c061c2d8 | 478 | /* 16-bit section relative relocation. */ |
c94cb026 | 479 | HOW (R_PPC64_SECTOFF, 2, 16, 0xffff, 0, false, signed, |
46807bf4 | 480 | ppc64_elf_sectoff_reloc), |
5bd4f169 | 481 | |
c061c2d8 | 482 | /* Like R_PPC64_SECTOFF, but no overflow warning. */ |
c94cb026 | 483 | HOW (R_PPC64_SECTOFF_LO, 2, 16, 0xffff, 0, false, dont, |
46807bf4 | 484 | ppc64_elf_sectoff_reloc), |
5bd4f169 AM |
485 | |
486 | /* 16-bit upper half section relative relocation. */ | |
c94cb026 | 487 | HOW (R_PPC64_SECTOFF_HI, 2, 16, 0xffff, 16, false, signed, |
46807bf4 | 488 | ppc64_elf_sectoff_reloc), |
5bd4f169 AM |
489 | |
490 | /* 16-bit upper half adjusted section relative relocation. */ | |
c94cb026 | 491 | HOW (R_PPC64_SECTOFF_HA, 2, 16, 0xffff, 16, false, signed, |
46807bf4 | 492 | ppc64_elf_sectoff_ha_reloc), |
5bd4f169 | 493 | |
04c9666a | 494 | /* Like R_PPC64_REL24 without touching the two least significant bits. */ |
c94cb026 | 495 | HOW (R_PPC64_REL30, 4, 30, 0xfffffffc, 2, true, dont, |
46807bf4 | 496 | bfd_elf_generic_reloc), |
5bd4f169 AM |
497 | |
498 | /* Relocs in the 64-bit PowerPC ELF ABI, not in the 32-bit ABI. */ | |
499 | ||
500 | /* A standard 64-bit relocation. */ | |
c94cb026 | 501 | HOW (R_PPC64_ADDR64, 8, 64, 0xffffffffffffffffULL, 0, false, dont, |
46807bf4 | 502 | bfd_elf_generic_reloc), |
5bd4f169 AM |
503 | |
504 | /* The bits 32-47 of an address. */ | |
c94cb026 | 505 | HOW (R_PPC64_ADDR16_HIGHER, 2, 16, 0xffff, 32, false, dont, |
46807bf4 | 506 | bfd_elf_generic_reloc), |
5bd4f169 AM |
507 | |
508 | /* The bits 32-47 of an address, plus 1 if the contents of the low | |
509 | 16 bits, treated as a signed number, is negative. */ | |
c94cb026 | 510 | HOW (R_PPC64_ADDR16_HIGHERA, 2, 16, 0xffff, 32, false, dont, |
46807bf4 | 511 | ppc64_elf_ha_reloc), |
5bd4f169 AM |
512 | |
513 | /* The bits 48-63 of an address. */ | |
c94cb026 | 514 | HOW (R_PPC64_ADDR16_HIGHEST, 2, 16, 0xffff, 48, false, dont, |
46807bf4 | 515 | bfd_elf_generic_reloc), |
5bd4f169 AM |
516 | |
517 | /* The bits 48-63 of an address, plus 1 if the contents of the low | |
518 | 16 bits, treated as a signed number, is negative. */ | |
c94cb026 | 519 | HOW (R_PPC64_ADDR16_HIGHESTA, 2, 16, 0xffff, 48, false, dont, |
46807bf4 | 520 | ppc64_elf_ha_reloc), |
5bd4f169 AM |
521 | |
522 | /* Like ADDR64, but may be unaligned. */ | |
c94cb026 | 523 | HOW (R_PPC64_UADDR64, 8, 64, 0xffffffffffffffffULL, 0, false, dont, |
46807bf4 | 524 | bfd_elf_generic_reloc), |
5bd4f169 AM |
525 | |
526 | /* 64-bit relative relocation. */ | |
c94cb026 | 527 | HOW (R_PPC64_REL64, 8, 64, 0xffffffffffffffffULL, 0, true, dont, |
46807bf4 | 528 | bfd_elf_generic_reloc), |
5bd4f169 | 529 | |
cedb70c5 | 530 | /* 64-bit relocation to the symbol's procedure linkage table. */ |
c94cb026 | 531 | HOW (R_PPC64_PLT64, 8, 64, 0xffffffffffffffffULL, 0, false, dont, |
46807bf4 | 532 | ppc64_elf_unhandled_reloc), |
5bd4f169 AM |
533 | |
534 | /* 64-bit PC relative relocation to the symbol's procedure linkage | |
535 | table. */ | |
536 | /* FIXME: R_PPC64_PLTREL64 not supported. */ | |
c94cb026 | 537 | HOW (R_PPC64_PLTREL64, 8, 64, 0xffffffffffffffffULL, 0, true, dont, |
46807bf4 | 538 | ppc64_elf_unhandled_reloc), |
5bd4f169 AM |
539 | |
540 | /* 16 bit TOC-relative relocation. */ | |
5bd4f169 | 541 | /* R_PPC64_TOC16 47 half16* S + A - .TOC. */ |
c94cb026 | 542 | HOW (R_PPC64_TOC16, 2, 16, 0xffff, 0, false, signed, |
46807bf4 | 543 | ppc64_elf_toc_reloc), |
5bd4f169 AM |
544 | |
545 | /* 16 bit TOC-relative relocation without overflow. */ | |
5bd4f169 | 546 | /* R_PPC64_TOC16_LO 48 half16 #lo (S + A - .TOC.) */ |
c94cb026 | 547 | HOW (R_PPC64_TOC16_LO, 2, 16, 0xffff, 0, false, dont, |
46807bf4 | 548 | ppc64_elf_toc_reloc), |
5bd4f169 AM |
549 | |
550 | /* 16 bit TOC-relative relocation, high 16 bits. */ | |
5bd4f169 | 551 | /* R_PPC64_TOC16_HI 49 half16 #hi (S + A - .TOC.) */ |
c94cb026 | 552 | HOW (R_PPC64_TOC16_HI, 2, 16, 0xffff, 16, false, signed, |
46807bf4 | 553 | ppc64_elf_toc_reloc), |
5bd4f169 AM |
554 | |
555 | /* 16 bit TOC-relative relocation, high 16 bits, plus 1 if the | |
556 | contents of the low 16 bits, treated as a signed number, is | |
557 | negative. */ | |
5bd4f169 | 558 | /* R_PPC64_TOC16_HA 50 half16 #ha (S + A - .TOC.) */ |
c94cb026 | 559 | HOW (R_PPC64_TOC16_HA, 2, 16, 0xffff, 16, false, signed, |
46807bf4 | 560 | ppc64_elf_toc_ha_reloc), |
5bd4f169 AM |
561 | |
562 | /* 64-bit relocation; insert value of TOC base (.TOC.). */ | |
5bd4f169 | 563 | /* R_PPC64_TOC 51 doubleword64 .TOC. */ |
c94cb026 | 564 | HOW (R_PPC64_TOC, 8, 64, 0xffffffffffffffffULL, 0, false, dont, |
46807bf4 | 565 | ppc64_elf_toc64_reloc), |
5bd4f169 AM |
566 | |
567 | /* Like R_PPC64_GOT16, but also informs the link editor that the | |
568 | value to relocate may (!) refer to a PLT entry which the link | |
569 | editor (a) may replace with the symbol value. If the link editor | |
570 | is unable to fully resolve the symbol, it may (b) create a PLT | |
571 | entry and store the address to the new PLT entry in the GOT. | |
572 | This permits lazy resolution of function symbols at run time. | |
573 | The link editor may also skip all of this and just (c) emit a | |
574 | R_PPC64_GLOB_DAT to tie the symbol to the GOT entry. */ | |
575 | /* FIXME: R_PPC64_PLTGOT16 not implemented. */ | |
c94cb026 | 576 | HOW (R_PPC64_PLTGOT16, 2, 16, 0xffff, 0, false,signed, |
46807bf4 | 577 | ppc64_elf_unhandled_reloc), |
411e1bfb AM |
578 | |
579 | /* Like R_PPC64_PLTGOT16, but without overflow. */ | |
580 | /* FIXME: R_PPC64_PLTGOT16_LO not implemented. */ | |
c94cb026 | 581 | HOW (R_PPC64_PLTGOT16_LO, 2, 16, 0xffff, 0, false, dont, |
46807bf4 | 582 | ppc64_elf_unhandled_reloc), |
411e1bfb AM |
583 | |
584 | /* Like R_PPC64_PLT_GOT16, but using bits 16-31 of the address. */ | |
585 | /* FIXME: R_PPC64_PLTGOT16_HI not implemented. */ | |
c94cb026 | 586 | HOW (R_PPC64_PLTGOT16_HI, 2, 16, 0xffff, 16, false, signed, |
46807bf4 | 587 | ppc64_elf_unhandled_reloc), |
411e1bfb AM |
588 | |
589 | /* Like R_PPC64_PLT_GOT16, but using bits 16-31 of the address, plus | |
590 | 1 if the contents of the low 16 bits, treated as a signed number, | |
591 | is negative. */ | |
592 | /* FIXME: R_PPC64_PLTGOT16_HA not implemented. */ | |
c94cb026 | 593 | HOW (R_PPC64_PLTGOT16_HA, 2, 16, 0xffff, 16, false, signed, |
46807bf4 | 594 | ppc64_elf_unhandled_reloc), |
411e1bfb AM |
595 | |
596 | /* Like R_PPC64_ADDR16, but for instructions with a DS field. */ | |
c94cb026 | 597 | HOW (R_PPC64_ADDR16_DS, 2, 16, 0xfffc, 0, false, signed, |
46807bf4 | 598 | bfd_elf_generic_reloc), |
411e1bfb AM |
599 | |
600 | /* Like R_PPC64_ADDR16_LO, but for instructions with a DS field. */ | |
c94cb026 | 601 | HOW (R_PPC64_ADDR16_LO_DS, 2, 16, 0xfffc, 0, false, dont, |
46807bf4 | 602 | bfd_elf_generic_reloc), |
411e1bfb AM |
603 | |
604 | /* Like R_PPC64_GOT16, but for instructions with a DS field. */ | |
c94cb026 | 605 | HOW (R_PPC64_GOT16_DS, 2, 16, 0xfffc, 0, false, signed, |
46807bf4 | 606 | ppc64_elf_unhandled_reloc), |
411e1bfb AM |
607 | |
608 | /* Like R_PPC64_GOT16_LO, but for instructions with a DS field. */ | |
c94cb026 | 609 | HOW (R_PPC64_GOT16_LO_DS, 2, 16, 0xfffc, 0, false, dont, |
46807bf4 | 610 | ppc64_elf_unhandled_reloc), |
411e1bfb AM |
611 | |
612 | /* Like R_PPC64_PLT16_LO, but for instructions with a DS field. */ | |
c94cb026 | 613 | HOW (R_PPC64_PLT16_LO_DS, 2, 16, 0xfffc, 0, false, dont, |
46807bf4 | 614 | ppc64_elf_unhandled_reloc), |
411e1bfb AM |
615 | |
616 | /* Like R_PPC64_SECTOFF, but for instructions with a DS field. */ | |
c94cb026 | 617 | HOW (R_PPC64_SECTOFF_DS, 2, 16, 0xfffc, 0, false, signed, |
46807bf4 | 618 | ppc64_elf_sectoff_reloc), |
411e1bfb AM |
619 | |
620 | /* Like R_PPC64_SECTOFF_LO, but for instructions with a DS field. */ | |
c94cb026 | 621 | HOW (R_PPC64_SECTOFF_LO_DS, 2, 16, 0xfffc, 0, false, dont, |
46807bf4 | 622 | ppc64_elf_sectoff_reloc), |
411e1bfb AM |
623 | |
624 | /* Like R_PPC64_TOC16, but for instructions with a DS field. */ | |
c94cb026 | 625 | HOW (R_PPC64_TOC16_DS, 2, 16, 0xfffc, 0, false, signed, |
46807bf4 | 626 | ppc64_elf_toc_reloc), |
411e1bfb AM |
627 | |
628 | /* Like R_PPC64_TOC16_LO, but for instructions with a DS field. */ | |
c94cb026 | 629 | HOW (R_PPC64_TOC16_LO_DS, 2, 16, 0xfffc, 0, false, dont, |
46807bf4 | 630 | ppc64_elf_toc_reloc), |
411e1bfb AM |
631 | |
632 | /* Like R_PPC64_PLTGOT16, but for instructions with a DS field. */ | |
633 | /* FIXME: R_PPC64_PLTGOT16_DS not implemented. */ | |
c94cb026 | 634 | HOW (R_PPC64_PLTGOT16_DS, 2, 16, 0xfffc, 0, false, signed, |
46807bf4 | 635 | ppc64_elf_unhandled_reloc), |
411e1bfb AM |
636 | |
637 | /* Like R_PPC64_PLTGOT16_LO, but for instructions with a DS field. */ | |
638 | /* FIXME: R_PPC64_PLTGOT16_LO not implemented. */ | |
c94cb026 | 639 | HOW (R_PPC64_PLTGOT16_LO_DS, 2, 16, 0xfffc, 0, false, dont, |
46807bf4 | 640 | ppc64_elf_unhandled_reloc), |
411e1bfb | 641 | |
727fc41e | 642 | /* Marker relocs for TLS. */ |
c94cb026 | 643 | HOW (R_PPC64_TLS, 4, 32, 0, 0, false, dont, |
46807bf4 AM |
644 | bfd_elf_generic_reloc), |
645 | ||
c94cb026 | 646 | HOW (R_PPC64_TLSGD, 4, 32, 0, 0, false, dont, |
46807bf4 AM |
647 | bfd_elf_generic_reloc), |
648 | ||
c94cb026 | 649 | HOW (R_PPC64_TLSLD, 4, 32, 0, 0, false, dont, |
46807bf4 | 650 | bfd_elf_generic_reloc), |
727fc41e | 651 | |
23cedd1d AM |
652 | /* Marker reloc for optimizing r2 save in prologue rather than on |
653 | each plt call stub. */ | |
c94cb026 | 654 | HOW (R_PPC64_TOCSAVE, 4, 32, 0, 0, false, dont, |
46807bf4 | 655 | bfd_elf_generic_reloc), |
3b421ab3 | 656 | |
23cedd1d | 657 | /* Marker relocs on inline plt call instructions. */ |
c94cb026 | 658 | HOW (R_PPC64_PLTSEQ, 4, 32, 0, 0, false, dont, |
46807bf4 AM |
659 | bfd_elf_generic_reloc), |
660 | ||
c94cb026 | 661 | HOW (R_PPC64_PLTCALL, 4, 32, 0, 0, false, dont, |
46807bf4 | 662 | bfd_elf_generic_reloc), |
23cedd1d | 663 | |
411e1bfb AM |
664 | /* Computes the load module index of the load module that contains the |
665 | definition of its TLS sym. */ | |
c94cb026 | 666 | HOW (R_PPC64_DTPMOD64, 8, 64, 0xffffffffffffffffULL, 0, false, dont, |
46807bf4 | 667 | ppc64_elf_unhandled_reloc), |
411e1bfb AM |
668 | |
669 | /* Computes a dtv-relative displacement, the difference between the value | |
670 | of sym+add and the base address of the thread-local storage block that | |
671 | contains the definition of sym, minus 0x8000. */ | |
c94cb026 | 672 | HOW (R_PPC64_DTPREL64, 8, 64, 0xffffffffffffffffULL, 0, false, dont, |
46807bf4 | 673 | ppc64_elf_unhandled_reloc), |
411e1bfb AM |
674 | |
675 | /* A 16 bit dtprel reloc. */ | |
c94cb026 | 676 | HOW (R_PPC64_DTPREL16, 2, 16, 0xffff, 0, false, signed, |
46807bf4 | 677 | ppc64_elf_unhandled_reloc), |
411e1bfb AM |
678 | |
679 | /* Like DTPREL16, but no overflow. */ | |
c94cb026 | 680 | HOW (R_PPC64_DTPREL16_LO, 2, 16, 0xffff, 0, false, dont, |
46807bf4 | 681 | ppc64_elf_unhandled_reloc), |
411e1bfb AM |
682 | |
683 | /* Like DTPREL16_LO, but next higher group of 16 bits. */ | |
c94cb026 | 684 | HOW (R_PPC64_DTPREL16_HI, 2, 16, 0xffff, 16, false, signed, |
46807bf4 | 685 | ppc64_elf_unhandled_reloc), |
411e1bfb AM |
686 | |
687 | /* Like DTPREL16_HI, but adjust for low 16 bits. */ | |
c94cb026 | 688 | HOW (R_PPC64_DTPREL16_HA, 2, 16, 0xffff, 16, false, signed, |
46807bf4 | 689 | ppc64_elf_unhandled_reloc), |
411e1bfb AM |
690 | |
691 | /* Like DTPREL16_HI, but next higher group of 16 bits. */ | |
c94cb026 | 692 | HOW (R_PPC64_DTPREL16_HIGHER, 2, 16, 0xffff, 32, false, dont, |
46807bf4 | 693 | ppc64_elf_unhandled_reloc), |
411e1bfb AM |
694 | |
695 | /* Like DTPREL16_HIGHER, but adjust for low 16 bits. */ | |
c94cb026 | 696 | HOW (R_PPC64_DTPREL16_HIGHERA, 2, 16, 0xffff, 32, false, dont, |
46807bf4 | 697 | ppc64_elf_unhandled_reloc), |
411e1bfb AM |
698 | |
699 | /* Like DTPREL16_HIGHER, but next higher group of 16 bits. */ | |
c94cb026 | 700 | HOW (R_PPC64_DTPREL16_HIGHEST, 2, 16, 0xffff, 48, false, dont, |
46807bf4 | 701 | ppc64_elf_unhandled_reloc), |
411e1bfb AM |
702 | |
703 | /* Like DTPREL16_HIGHEST, but adjust for low 16 bits. */ | |
c94cb026 | 704 | HOW (R_PPC64_DTPREL16_HIGHESTA, 2, 16, 0xffff, 48, false, dont, |
46807bf4 | 705 | ppc64_elf_unhandled_reloc), |
411e1bfb AM |
706 | |
707 | /* Like DTPREL16, but for insns with a DS field. */ | |
c94cb026 | 708 | HOW (R_PPC64_DTPREL16_DS, 2, 16, 0xfffc, 0, false, signed, |
46807bf4 | 709 | ppc64_elf_unhandled_reloc), |
411e1bfb AM |
710 | |
711 | /* Like DTPREL16_DS, but no overflow. */ | |
c94cb026 | 712 | HOW (R_PPC64_DTPREL16_LO_DS, 2, 16, 0xfffc, 0, false, dont, |
46807bf4 | 713 | ppc64_elf_unhandled_reloc), |
411e1bfb AM |
714 | |
715 | /* Computes a tp-relative displacement, the difference between the value of | |
716 | sym+add and the value of the thread pointer (r13). */ | |
c94cb026 | 717 | HOW (R_PPC64_TPREL64, 8, 64, 0xffffffffffffffffULL, 0, false, dont, |
46807bf4 | 718 | ppc64_elf_unhandled_reloc), |
411e1bfb AM |
719 | |
720 | /* A 16 bit tprel reloc. */ | |
c94cb026 | 721 | HOW (R_PPC64_TPREL16, 2, 16, 0xffff, 0, false, signed, |
46807bf4 | 722 | ppc64_elf_unhandled_reloc), |
411e1bfb AM |
723 | |
724 | /* Like TPREL16, but no overflow. */ | |
c94cb026 | 725 | HOW (R_PPC64_TPREL16_LO, 2, 16, 0xffff, 0, false, dont, |
46807bf4 | 726 | ppc64_elf_unhandled_reloc), |
411e1bfb AM |
727 | |
728 | /* Like TPREL16_LO, but next higher group of 16 bits. */ | |
c94cb026 | 729 | HOW (R_PPC64_TPREL16_HI, 2, 16, 0xffff, 16, false, signed, |
46807bf4 | 730 | ppc64_elf_unhandled_reloc), |
411e1bfb AM |
731 | |
732 | /* Like TPREL16_HI, but adjust for low 16 bits. */ | |
c94cb026 | 733 | HOW (R_PPC64_TPREL16_HA, 2, 16, 0xffff, 16, false, signed, |
46807bf4 | 734 | ppc64_elf_unhandled_reloc), |
411e1bfb AM |
735 | |
736 | /* Like TPREL16_HI, but next higher group of 16 bits. */ | |
c94cb026 | 737 | HOW (R_PPC64_TPREL16_HIGHER, 2, 16, 0xffff, 32, false, dont, |
46807bf4 | 738 | ppc64_elf_unhandled_reloc), |
411e1bfb AM |
739 | |
740 | /* Like TPREL16_HIGHER, but adjust for low 16 bits. */ | |
c94cb026 | 741 | HOW (R_PPC64_TPREL16_HIGHERA, 2, 16, 0xffff, 32, false, dont, |
46807bf4 | 742 | ppc64_elf_unhandled_reloc), |
411e1bfb AM |
743 | |
744 | /* Like TPREL16_HIGHER, but next higher group of 16 bits. */ | |
c94cb026 | 745 | HOW (R_PPC64_TPREL16_HIGHEST, 2, 16, 0xffff, 48, false, dont, |
46807bf4 | 746 | ppc64_elf_unhandled_reloc), |
411e1bfb AM |
747 | |
748 | /* Like TPREL16_HIGHEST, but adjust for low 16 bits. */ | |
c94cb026 | 749 | HOW (R_PPC64_TPREL16_HIGHESTA, 2, 16, 0xffff, 48, false, dont, |
46807bf4 | 750 | ppc64_elf_unhandled_reloc), |
411e1bfb AM |
751 | |
752 | /* Like TPREL16, but for insns with a DS field. */ | |
c94cb026 | 753 | HOW (R_PPC64_TPREL16_DS, 2, 16, 0xfffc, 0, false, signed, |
46807bf4 | 754 | ppc64_elf_unhandled_reloc), |
411e1bfb AM |
755 | |
756 | /* Like TPREL16_DS, but no overflow. */ | |
c94cb026 | 757 | HOW (R_PPC64_TPREL16_LO_DS, 2, 16, 0xfffc, 0, false, dont, |
46807bf4 | 758 | ppc64_elf_unhandled_reloc), |
411e1bfb AM |
759 | |
760 | /* Allocates two contiguous entries in the GOT to hold a tls_index structure, | |
761 | with values (sym+add)@dtpmod and (sym+add)@dtprel, and computes the offset | |
762 | to the first entry relative to the TOC base (r2). */ | |
c94cb026 | 763 | HOW (R_PPC64_GOT_TLSGD16, 2, 16, 0xffff, 0, false, signed, |
46807bf4 | 764 | ppc64_elf_unhandled_reloc), |
5bd4f169 | 765 | |
411e1bfb | 766 | /* Like GOT_TLSGD16, but no overflow. */ |
c94cb026 | 767 | HOW (R_PPC64_GOT_TLSGD16_LO, 2, 16, 0xffff, 0, false, dont, |
46807bf4 | 768 | ppc64_elf_unhandled_reloc), |
5bd4f169 | 769 | |
411e1bfb | 770 | /* Like GOT_TLSGD16_LO, but next higher group of 16 bits. */ |
c94cb026 | 771 | HOW (R_PPC64_GOT_TLSGD16_HI, 2, 16, 0xffff, 16, false, signed, |
46807bf4 | 772 | ppc64_elf_unhandled_reloc), |
5bd4f169 | 773 | |
411e1bfb | 774 | /* Like GOT_TLSGD16_HI, but adjust for low 16 bits. */ |
c94cb026 | 775 | HOW (R_PPC64_GOT_TLSGD16_HA, 2, 16, 0xffff, 16, false, signed, |
46807bf4 | 776 | ppc64_elf_unhandled_reloc), |
5bd4f169 | 777 | |
411e1bfb AM |
778 | /* Allocates two contiguous entries in the GOT to hold a tls_index structure, |
779 | with values (sym+add)@dtpmod and zero, and computes the offset to the | |
780 | first entry relative to the TOC base (r2). */ | |
c94cb026 | 781 | HOW (R_PPC64_GOT_TLSLD16, 2, 16, 0xffff, 0, false, signed, |
46807bf4 | 782 | ppc64_elf_unhandled_reloc), |
5bd4f169 | 783 | |
411e1bfb | 784 | /* Like GOT_TLSLD16, but no overflow. */ |
c94cb026 | 785 | HOW (R_PPC64_GOT_TLSLD16_LO, 2, 16, 0xffff, 0, false, dont, |
46807bf4 | 786 | ppc64_elf_unhandled_reloc), |
5bd4f169 | 787 | |
411e1bfb | 788 | /* Like GOT_TLSLD16_LO, but next higher group of 16 bits. */ |
c94cb026 | 789 | HOW (R_PPC64_GOT_TLSLD16_HI, 2, 16, 0xffff, 16, false, signed, |
46807bf4 | 790 | ppc64_elf_unhandled_reloc), |
5bd4f169 | 791 | |
411e1bfb | 792 | /* Like GOT_TLSLD16_HI, but adjust for low 16 bits. */ |
c94cb026 | 793 | HOW (R_PPC64_GOT_TLSLD16_HA, 2, 16, 0xffff, 16, false, signed, |
46807bf4 | 794 | ppc64_elf_unhandled_reloc), |
5bd4f169 | 795 | |
411e1bfb AM |
796 | /* Allocates an entry in the GOT with value (sym+add)@dtprel, and computes |
797 | the offset to the entry relative to the TOC base (r2). */ | |
c94cb026 | 798 | HOW (R_PPC64_GOT_DTPREL16_DS, 2, 16, 0xfffc, 0, false, signed, |
46807bf4 | 799 | ppc64_elf_unhandled_reloc), |
5bd4f169 | 800 | |
411e1bfb | 801 | /* Like GOT_DTPREL16_DS, but no overflow. */ |
c94cb026 | 802 | HOW (R_PPC64_GOT_DTPREL16_LO_DS, 2, 16, 0xfffc, 0, false, dont, |
46807bf4 | 803 | ppc64_elf_unhandled_reloc), |
5bd4f169 | 804 | |
411e1bfb | 805 | /* Like GOT_DTPREL16_LO_DS, but next higher group of 16 bits. */ |
c94cb026 | 806 | HOW (R_PPC64_GOT_DTPREL16_HI, 2, 16, 0xffff, 16, false, signed, |
46807bf4 | 807 | ppc64_elf_unhandled_reloc), |
5bd4f169 | 808 | |
411e1bfb | 809 | /* Like GOT_DTPREL16_HI, but adjust for low 16 bits. */ |
c94cb026 | 810 | HOW (R_PPC64_GOT_DTPREL16_HA, 2, 16, 0xffff, 16, false, signed, |
46807bf4 | 811 | ppc64_elf_unhandled_reloc), |
411e1bfb AM |
812 | |
813 | /* Allocates an entry in the GOT with value (sym+add)@tprel, and computes the | |
814 | offset to the entry relative to the TOC base (r2). */ | |
c94cb026 | 815 | HOW (R_PPC64_GOT_TPREL16_DS, 2, 16, 0xfffc, 0, false, signed, |
46807bf4 | 816 | ppc64_elf_unhandled_reloc), |
5bd4f169 | 817 | |
411e1bfb | 818 | /* Like GOT_TPREL16_DS, but no overflow. */ |
c94cb026 | 819 | HOW (R_PPC64_GOT_TPREL16_LO_DS, 2, 16, 0xfffc, 0, false, dont, |
46807bf4 | 820 | ppc64_elf_unhandled_reloc), |
5bd4f169 | 821 | |
411e1bfb | 822 | /* Like GOT_TPREL16_LO_DS, but next higher group of 16 bits. */ |
c94cb026 | 823 | HOW (R_PPC64_GOT_TPREL16_HI, 2, 16, 0xffff, 16, false, signed, |
46807bf4 | 824 | ppc64_elf_unhandled_reloc), |
5bd4f169 | 825 | |
411e1bfb | 826 | /* Like GOT_TPREL16_HI, but adjust for low 16 bits. */ |
c94cb026 | 827 | HOW (R_PPC64_GOT_TPREL16_HA, 2, 16, 0xffff, 16, false, signed, |
46807bf4 AM |
828 | ppc64_elf_unhandled_reloc), |
829 | ||
5d0feb98 | 830 | HOW (R_PPC64_JMP_IREL, 0, 0, 0, 0, false, dont, |
46807bf4 AM |
831 | ppc64_elf_unhandled_reloc), |
832 | ||
c94cb026 | 833 | HOW (R_PPC64_IRELATIVE, 8, 64, 0xffffffffffffffffULL, 0, false, dont, |
46807bf4 | 834 | bfd_elf_generic_reloc), |
e054468f | 835 | |
25f23106 | 836 | /* A 16 bit relative relocation. */ |
c94cb026 | 837 | HOW (R_PPC64_REL16, 2, 16, 0xffff, 0, true, signed, |
46807bf4 | 838 | bfd_elf_generic_reloc), |
25f23106 AM |
839 | |
840 | /* A 16 bit relative relocation without overflow. */ | |
c94cb026 | 841 | HOW (R_PPC64_REL16_LO, 2, 16, 0xffff, 0, true, dont, |
46807bf4 | 842 | bfd_elf_generic_reloc), |
25f23106 AM |
843 | |
844 | /* The high order 16 bits of a relative address. */ | |
c94cb026 | 845 | HOW (R_PPC64_REL16_HI, 2, 16, 0xffff, 16, true, signed, |
46807bf4 | 846 | bfd_elf_generic_reloc), |
25f23106 AM |
847 | |
848 | /* The high order 16 bits of a relative address, plus 1 if the contents of | |
849 | the low 16 bits, treated as a signed number, is negative. */ | |
c94cb026 | 850 | HOW (R_PPC64_REL16_HA, 2, 16, 0xffff, 16, true, signed, |
46807bf4 | 851 | ppc64_elf_ha_reloc), |
25f23106 | 852 | |
c94cb026 | 853 | HOW (R_PPC64_REL16_HIGH, 2, 16, 0xffff, 16, true, dont, |
4a969973 AM |
854 | bfd_elf_generic_reloc), |
855 | ||
c94cb026 | 856 | HOW (R_PPC64_REL16_HIGHA, 2, 16, 0xffff, 16, true, dont, |
4a969973 AM |
857 | ppc64_elf_ha_reloc), |
858 | ||
c94cb026 | 859 | HOW (R_PPC64_REL16_HIGHER, 2, 16, 0xffff, 32, true, dont, |
4a969973 AM |
860 | bfd_elf_generic_reloc), |
861 | ||
c94cb026 | 862 | HOW (R_PPC64_REL16_HIGHERA, 2, 16, 0xffff, 32, true, dont, |
4a969973 AM |
863 | ppc64_elf_ha_reloc), |
864 | ||
c94cb026 | 865 | HOW (R_PPC64_REL16_HIGHEST, 2, 16, 0xffff, 48, true, dont, |
4a969973 AM |
866 | bfd_elf_generic_reloc), |
867 | ||
c94cb026 | 868 | HOW (R_PPC64_REL16_HIGHESTA, 2, 16, 0xffff, 48, true, dont, |
4a969973 AM |
869 | ppc64_elf_ha_reloc), |
870 | ||
a680de9a | 871 | /* Like R_PPC64_REL16_HA but for split field in addpcis. */ |
c94cb026 | 872 | HOW (R_PPC64_REL16DX_HA, 4, 16, 0x1fffc1, 16, true, signed, |
46807bf4 | 873 | ppc64_elf_ha_reloc), |
a680de9a | 874 | |
7ba71655 | 875 | /* A split-field reloc for addpcis, non-relative (gas internal use only). */ |
c94cb026 | 876 | HOW (R_PPC64_16DX_HA, 4, 16, 0x1fffc1, 16, false, signed, |
46807bf4 | 877 | ppc64_elf_ha_reloc), |
7ba71655 | 878 | |
f9c6b907 | 879 | /* Like R_PPC64_ADDR16_HI, but no overflow. */ |
c94cb026 | 880 | HOW (R_PPC64_ADDR16_HIGH, 2, 16, 0xffff, 16, false, dont, |
46807bf4 | 881 | bfd_elf_generic_reloc), |
f9c6b907 AM |
882 | |
883 | /* Like R_PPC64_ADDR16_HA, but no overflow. */ | |
c94cb026 | 884 | HOW (R_PPC64_ADDR16_HIGHA, 2, 16, 0xffff, 16, false, dont, |
46807bf4 | 885 | ppc64_elf_ha_reloc), |
f9c6b907 AM |
886 | |
887 | /* Like R_PPC64_DTPREL16_HI, but no overflow. */ | |
c94cb026 | 888 | HOW (R_PPC64_DTPREL16_HIGH, 2, 16, 0xffff, 16, false, dont, |
46807bf4 | 889 | ppc64_elf_unhandled_reloc), |
f9c6b907 AM |
890 | |
891 | /* Like R_PPC64_DTPREL16_HA, but no overflow. */ | |
c94cb026 | 892 | HOW (R_PPC64_DTPREL16_HIGHA, 2, 16, 0xffff, 16, false, dont, |
46807bf4 | 893 | ppc64_elf_unhandled_reloc), |
f9c6b907 AM |
894 | |
895 | /* Like R_PPC64_TPREL16_HI, but no overflow. */ | |
c94cb026 | 896 | HOW (R_PPC64_TPREL16_HIGH, 2, 16, 0xffff, 16, false, dont, |
46807bf4 | 897 | ppc64_elf_unhandled_reloc), |
f9c6b907 AM |
898 | |
899 | /* Like R_PPC64_TPREL16_HA, but no overflow. */ | |
c94cb026 | 900 | HOW (R_PPC64_TPREL16_HIGHA, 2, 16, 0xffff, 16, false, dont, |
46807bf4 | 901 | ppc64_elf_unhandled_reloc), |
f9c6b907 | 902 | |
006589cf | 903 | /* Marker reloc on ELFv2 large-model function entry. */ |
c94cb026 | 904 | HOW (R_PPC64_ENTRY, 4, 32, 0, 0, false, dont, |
46807bf4 | 905 | bfd_elf_generic_reloc), |
006589cf | 906 | |
45965137 | 907 | /* Like ADDR64, but use local entry point of function. */ |
c94cb026 | 908 | HOW (R_PPC64_ADDR64_LOCAL, 8, 64, 0xffffffffffffffffULL, 0, false, dont, |
46807bf4 | 909 | bfd_elf_generic_reloc), |
45965137 | 910 | |
c94cb026 | 911 | HOW (R_PPC64_PLTSEQ_NOTOC, 4, 32, 0, 0, false, dont, |
5663e321 AM |
912 | bfd_elf_generic_reloc), |
913 | ||
c94cb026 | 914 | HOW (R_PPC64_PLTCALL_NOTOC, 4, 32, 0, 0, false, dont, |
5663e321 AM |
915 | bfd_elf_generic_reloc), |
916 | ||
c94cb026 | 917 | HOW (R_PPC64_PCREL_OPT, 4, 32, 0, 0, false, dont, |
5663e321 AM |
918 | bfd_elf_generic_reloc), |
919 | ||
c94cb026 | 920 | HOW (R_PPC64_D34, 8, 34, 0x3ffff0000ffffULL, 0, false, signed, |
5663e321 AM |
921 | ppc64_elf_prefix_reloc), |
922 | ||
c94cb026 | 923 | HOW (R_PPC64_D34_LO, 8, 34, 0x3ffff0000ffffULL, 0, false, dont, |
5663e321 AM |
924 | ppc64_elf_prefix_reloc), |
925 | ||
c94cb026 | 926 | HOW (R_PPC64_D34_HI30, 8, 34, 0x3ffff0000ffffULL, 34, false, dont, |
5663e321 AM |
927 | ppc64_elf_prefix_reloc), |
928 | ||
c94cb026 | 929 | HOW (R_PPC64_D34_HA30, 8, 34, 0x3ffff0000ffffULL, 34, false, dont, |
5663e321 AM |
930 | ppc64_elf_prefix_reloc), |
931 | ||
c94cb026 | 932 | HOW (R_PPC64_PCREL34, 8, 34, 0x3ffff0000ffffULL, 0, true, signed, |
5663e321 AM |
933 | ppc64_elf_prefix_reloc), |
934 | ||
c94cb026 | 935 | HOW (R_PPC64_GOT_PCREL34, 8, 34, 0x3ffff0000ffffULL, 0, true, signed, |
5663e321 AM |
936 | ppc64_elf_unhandled_reloc), |
937 | ||
c94cb026 | 938 | HOW (R_PPC64_PLT_PCREL34, 8, 34, 0x3ffff0000ffffULL, 0, true, signed, |
5663e321 AM |
939 | ppc64_elf_unhandled_reloc), |
940 | ||
c94cb026 | 941 | HOW (R_PPC64_PLT_PCREL34_NOTOC, 8, 34, 0x3ffff0000ffffULL, 0, true, signed, |
5663e321 AM |
942 | ppc64_elf_unhandled_reloc), |
943 | ||
c94cb026 | 944 | HOW (R_PPC64_TPREL34, 8, 34, 0x3ffff0000ffffULL, 0, false, signed, |
c213164a AM |
945 | ppc64_elf_unhandled_reloc), |
946 | ||
c94cb026 | 947 | HOW (R_PPC64_DTPREL34, 8, 34, 0x3ffff0000ffffULL, 0, false, signed, |
c213164a AM |
948 | ppc64_elf_unhandled_reloc), |
949 | ||
c94cb026 | 950 | HOW (R_PPC64_GOT_TLSGD_PCREL34, 8, 34, 0x3ffff0000ffffULL, 0, true, signed, |
c213164a AM |
951 | ppc64_elf_unhandled_reloc), |
952 | ||
c94cb026 | 953 | HOW (R_PPC64_GOT_TLSLD_PCREL34, 8, 34, 0x3ffff0000ffffULL, 0, true, signed, |
c213164a AM |
954 | ppc64_elf_unhandled_reloc), |
955 | ||
c94cb026 | 956 | HOW (R_PPC64_GOT_TPREL_PCREL34, 8, 34, 0x3ffff0000ffffULL, 0, true, signed, |
c213164a AM |
957 | ppc64_elf_unhandled_reloc), |
958 | ||
c94cb026 | 959 | HOW (R_PPC64_GOT_DTPREL_PCREL34, 8, 34, 0x3ffff0000ffffULL, 0, true, signed, |
c213164a AM |
960 | ppc64_elf_unhandled_reloc), |
961 | ||
c94cb026 | 962 | HOW (R_PPC64_ADDR16_HIGHER34, 2, 16, 0xffff, 34, false, dont, |
5663e321 AM |
963 | bfd_elf_generic_reloc), |
964 | ||
c94cb026 | 965 | HOW (R_PPC64_ADDR16_HIGHERA34, 2, 16, 0xffff, 34, false, dont, |
5663e321 AM |
966 | ppc64_elf_ha_reloc), |
967 | ||
c94cb026 | 968 | HOW (R_PPC64_ADDR16_HIGHEST34, 2, 16, 0xffff, 50, false, dont, |
5663e321 AM |
969 | bfd_elf_generic_reloc), |
970 | ||
c94cb026 | 971 | HOW (R_PPC64_ADDR16_HIGHESTA34, 2, 16, 0xffff, 50, false, dont, |
5663e321 AM |
972 | ppc64_elf_ha_reloc), |
973 | ||
c94cb026 | 974 | HOW (R_PPC64_REL16_HIGHER34, 2, 16, 0xffff, 34, true, dont, |
5663e321 AM |
975 | bfd_elf_generic_reloc), |
976 | ||
c94cb026 | 977 | HOW (R_PPC64_REL16_HIGHERA34, 2, 16, 0xffff, 34, true, dont, |
5663e321 AM |
978 | ppc64_elf_ha_reloc), |
979 | ||
c94cb026 | 980 | HOW (R_PPC64_REL16_HIGHEST34, 2, 16, 0xffff, 50, true, dont, |
5663e321 AM |
981 | bfd_elf_generic_reloc), |
982 | ||
c94cb026 | 983 | HOW (R_PPC64_REL16_HIGHESTA34, 2, 16, 0xffff, 50, true, dont, |
5663e321 AM |
984 | ppc64_elf_ha_reloc), |
985 | ||
c94cb026 | 986 | HOW (R_PPC64_D28, 8, 28, 0xfff0000ffffULL, 0, false, signed, |
5663e321 AM |
987 | ppc64_elf_prefix_reloc), |
988 | ||
c94cb026 | 989 | HOW (R_PPC64_PCREL28, 8, 28, 0xfff0000ffffULL, 0, true, signed, |
5663e321 AM |
990 | ppc64_elf_prefix_reloc), |
991 | ||
5bd4f169 | 992 | /* GNU extension to record C++ vtable hierarchy. */ |
5d0feb98 | 993 | HOW (R_PPC64_GNU_VTINHERIT, 0, 0, 0, 0, false, dont, |
46807bf4 | 994 | NULL), |
5bd4f169 AM |
995 | |
996 | /* GNU extension to record C++ vtable member usage. */ | |
5d0feb98 | 997 | HOW (R_PPC64_GNU_VTENTRY, 0, 0, 0, 0, false, dont, |
46807bf4 | 998 | NULL), |
5bd4f169 AM |
999 | }; |
1000 | ||
1001 | \f | |
1002 | /* Initialize the ppc64_elf_howto_table, so that linear accesses can | |
1003 | be done. */ | |
1004 | ||
1005 | static void | |
4ce794b7 | 1006 | ppc_howto_init (void) |
5bd4f169 AM |
1007 | { |
1008 | unsigned int i, type; | |
1009 | ||
a4b6fadd | 1010 | for (i = 0; i < ARRAY_SIZE (ppc64_elf_howto_raw); i++) |
5bd4f169 AM |
1011 | { |
1012 | type = ppc64_elf_howto_raw[i].type; | |
a4b6fadd | 1013 | BFD_ASSERT (type < ARRAY_SIZE (ppc64_elf_howto_table)); |
5bd4f169 AM |
1014 | ppc64_elf_howto_table[type] = &ppc64_elf_howto_raw[i]; |
1015 | } | |
1016 | } | |
1017 | ||
1018 | static reloc_howto_type * | |
87c69f97 | 1019 | ppc64_elf_reloc_type_lookup (bfd *abfd, bfd_reloc_code_real_type code) |
5bd4f169 | 1020 | { |
411e1bfb | 1021 | enum elf_ppc64_reloc_type r = R_PPC64_NONE; |
5bd4f169 AM |
1022 | |
1023 | if (!ppc64_elf_howto_table[R_PPC64_ADDR32]) | |
1024 | /* Initialize howto table if needed. */ | |
1025 | ppc_howto_init (); | |
1026 | ||
4ce794b7 | 1027 | switch (code) |
5bd4f169 AM |
1028 | { |
1029 | default: | |
f3185997 | 1030 | /* xgettext:c-format */ |
2cdcc330 AM |
1031 | _bfd_error_handler (_("%pB: unsupported relocation type %#x"), abfd, |
1032 | (int) code); | |
f3185997 | 1033 | bfd_set_error (bfd_error_bad_value); |
4ce794b7 | 1034 | return NULL; |
5bd4f169 | 1035 | |
411e1bfb AM |
1036 | case BFD_RELOC_NONE: r = R_PPC64_NONE; |
1037 | break; | |
1038 | case BFD_RELOC_32: r = R_PPC64_ADDR32; | |
1039 | break; | |
1040 | case BFD_RELOC_PPC_BA26: r = R_PPC64_ADDR24; | |
1041 | break; | |
1042 | case BFD_RELOC_16: r = R_PPC64_ADDR16; | |
1043 | break; | |
1044 | case BFD_RELOC_LO16: r = R_PPC64_ADDR16_LO; | |
1045 | break; | |
1046 | case BFD_RELOC_HI16: r = R_PPC64_ADDR16_HI; | |
1047 | break; | |
f9c6b907 AM |
1048 | case BFD_RELOC_PPC64_ADDR16_HIGH: r = R_PPC64_ADDR16_HIGH; |
1049 | break; | |
411e1bfb | 1050 | case BFD_RELOC_HI16_S: r = R_PPC64_ADDR16_HA; |
5bd4f169 | 1051 | break; |
f9c6b907 AM |
1052 | case BFD_RELOC_PPC64_ADDR16_HIGHA: r = R_PPC64_ADDR16_HIGHA; |
1053 | break; | |
411e1bfb | 1054 | case BFD_RELOC_PPC_BA16: r = R_PPC64_ADDR14; |
5bd4f169 | 1055 | break; |
411e1bfb | 1056 | case BFD_RELOC_PPC_BA16_BRTAKEN: r = R_PPC64_ADDR14_BRTAKEN; |
5bd4f169 | 1057 | break; |
411e1bfb | 1058 | case BFD_RELOC_PPC_BA16_BRNTAKEN: r = R_PPC64_ADDR14_BRNTAKEN; |
5bd4f169 | 1059 | break; |
411e1bfb | 1060 | case BFD_RELOC_PPC_B26: r = R_PPC64_REL24; |
5bd4f169 | 1061 | break; |
05d0e962 AM |
1062 | case BFD_RELOC_PPC64_REL24_NOTOC: r = R_PPC64_REL24_NOTOC; |
1063 | break; | |
7aba54da AM |
1064 | case BFD_RELOC_PPC64_REL24_P9NOTOC: r = R_PPC64_REL24_P9NOTOC; |
1065 | break; | |
411e1bfb | 1066 | case BFD_RELOC_PPC_B16: r = R_PPC64_REL14; |
5bd4f169 | 1067 | break; |
411e1bfb | 1068 | case BFD_RELOC_PPC_B16_BRTAKEN: r = R_PPC64_REL14_BRTAKEN; |
5bd4f169 | 1069 | break; |
411e1bfb | 1070 | case BFD_RELOC_PPC_B16_BRNTAKEN: r = R_PPC64_REL14_BRNTAKEN; |
5bd4f169 | 1071 | break; |
411e1bfb | 1072 | case BFD_RELOC_16_GOTOFF: r = R_PPC64_GOT16; |
5bd4f169 | 1073 | break; |
411e1bfb | 1074 | case BFD_RELOC_LO16_GOTOFF: r = R_PPC64_GOT16_LO; |
5bd4f169 | 1075 | break; |
411e1bfb | 1076 | case BFD_RELOC_HI16_GOTOFF: r = R_PPC64_GOT16_HI; |
5bd4f169 | 1077 | break; |
411e1bfb | 1078 | case BFD_RELOC_HI16_S_GOTOFF: r = R_PPC64_GOT16_HA; |
5bd4f169 | 1079 | break; |
411e1bfb | 1080 | case BFD_RELOC_PPC_COPY: r = R_PPC64_COPY; |
5bd4f169 | 1081 | break; |
411e1bfb | 1082 | case BFD_RELOC_PPC_GLOB_DAT: r = R_PPC64_GLOB_DAT; |
5bd4f169 | 1083 | break; |
411e1bfb | 1084 | case BFD_RELOC_32_PCREL: r = R_PPC64_REL32; |
5bd4f169 | 1085 | break; |
411e1bfb | 1086 | case BFD_RELOC_32_PLTOFF: r = R_PPC64_PLT32; |
5bd4f169 | 1087 | break; |
411e1bfb | 1088 | case BFD_RELOC_32_PLT_PCREL: r = R_PPC64_PLTREL32; |
5bd4f169 | 1089 | break; |
411e1bfb | 1090 | case BFD_RELOC_LO16_PLTOFF: r = R_PPC64_PLT16_LO; |
5bd4f169 | 1091 | break; |
411e1bfb | 1092 | case BFD_RELOC_HI16_PLTOFF: r = R_PPC64_PLT16_HI; |
5bd4f169 | 1093 | break; |
411e1bfb | 1094 | case BFD_RELOC_HI16_S_PLTOFF: r = R_PPC64_PLT16_HA; |
5bd4f169 | 1095 | break; |
411e1bfb | 1096 | case BFD_RELOC_16_BASEREL: r = R_PPC64_SECTOFF; |
5bd4f169 | 1097 | break; |
411e1bfb | 1098 | case BFD_RELOC_LO16_BASEREL: r = R_PPC64_SECTOFF_LO; |
5bd4f169 | 1099 | break; |
411e1bfb | 1100 | case BFD_RELOC_HI16_BASEREL: r = R_PPC64_SECTOFF_HI; |
5bd4f169 | 1101 | break; |
411e1bfb | 1102 | case BFD_RELOC_HI16_S_BASEREL: r = R_PPC64_SECTOFF_HA; |
5bd4f169 | 1103 | break; |
411e1bfb | 1104 | case BFD_RELOC_CTOR: r = R_PPC64_ADDR64; |
5bd4f169 | 1105 | break; |
411e1bfb | 1106 | case BFD_RELOC_64: r = R_PPC64_ADDR64; |
5bd4f169 | 1107 | break; |
411e1bfb | 1108 | case BFD_RELOC_PPC64_HIGHER: r = R_PPC64_ADDR16_HIGHER; |
5bd4f169 | 1109 | break; |
411e1bfb | 1110 | case BFD_RELOC_PPC64_HIGHER_S: r = R_PPC64_ADDR16_HIGHERA; |
5bd4f169 | 1111 | break; |
411e1bfb | 1112 | case BFD_RELOC_PPC64_HIGHEST: r = R_PPC64_ADDR16_HIGHEST; |
5bd4f169 | 1113 | break; |
411e1bfb | 1114 | case BFD_RELOC_PPC64_HIGHEST_S: r = R_PPC64_ADDR16_HIGHESTA; |
5bd4f169 | 1115 | break; |
411e1bfb | 1116 | case BFD_RELOC_64_PCREL: r = R_PPC64_REL64; |
5bd4f169 | 1117 | break; |
411e1bfb | 1118 | case BFD_RELOC_64_PLTOFF: r = R_PPC64_PLT64; |
5bd4f169 | 1119 | break; |
411e1bfb | 1120 | case BFD_RELOC_64_PLT_PCREL: r = R_PPC64_PLTREL64; |
5bd4f169 | 1121 | break; |
411e1bfb | 1122 | case BFD_RELOC_PPC_TOC16: r = R_PPC64_TOC16; |
5bd4f169 | 1123 | break; |
411e1bfb | 1124 | case BFD_RELOC_PPC64_TOC16_LO: r = R_PPC64_TOC16_LO; |
5bd4f169 | 1125 | break; |
411e1bfb | 1126 | case BFD_RELOC_PPC64_TOC16_HI: r = R_PPC64_TOC16_HI; |
5bd4f169 | 1127 | break; |
411e1bfb | 1128 | case BFD_RELOC_PPC64_TOC16_HA: r = R_PPC64_TOC16_HA; |
5bd4f169 | 1129 | break; |
411e1bfb | 1130 | case BFD_RELOC_PPC64_TOC: r = R_PPC64_TOC; |
5bd4f169 | 1131 | break; |
411e1bfb | 1132 | case BFD_RELOC_PPC64_PLTGOT16: r = R_PPC64_PLTGOT16; |
5bd4f169 | 1133 | break; |
411e1bfb | 1134 | case BFD_RELOC_PPC64_PLTGOT16_LO: r = R_PPC64_PLTGOT16_LO; |
5bd4f169 | 1135 | break; |
411e1bfb | 1136 | case BFD_RELOC_PPC64_PLTGOT16_HI: r = R_PPC64_PLTGOT16_HI; |
5bd4f169 | 1137 | break; |
411e1bfb | 1138 | case BFD_RELOC_PPC64_PLTGOT16_HA: r = R_PPC64_PLTGOT16_HA; |
5bd4f169 | 1139 | break; |
411e1bfb | 1140 | case BFD_RELOC_PPC64_ADDR16_DS: r = R_PPC64_ADDR16_DS; |
5bd4f169 | 1141 | break; |
411e1bfb | 1142 | case BFD_RELOC_PPC64_ADDR16_LO_DS: r = R_PPC64_ADDR16_LO_DS; |
5bd4f169 | 1143 | break; |
411e1bfb | 1144 | case BFD_RELOC_PPC64_GOT16_DS: r = R_PPC64_GOT16_DS; |
5bd4f169 | 1145 | break; |
411e1bfb | 1146 | case BFD_RELOC_PPC64_GOT16_LO_DS: r = R_PPC64_GOT16_LO_DS; |
5bd4f169 | 1147 | break; |
411e1bfb | 1148 | case BFD_RELOC_PPC64_PLT16_LO_DS: r = R_PPC64_PLT16_LO_DS; |
5bd4f169 | 1149 | break; |
411e1bfb | 1150 | case BFD_RELOC_PPC64_SECTOFF_DS: r = R_PPC64_SECTOFF_DS; |
5bd4f169 | 1151 | break; |
411e1bfb | 1152 | case BFD_RELOC_PPC64_SECTOFF_LO_DS: r = R_PPC64_SECTOFF_LO_DS; |
5bd4f169 | 1153 | break; |
411e1bfb | 1154 | case BFD_RELOC_PPC64_TOC16_DS: r = R_PPC64_TOC16_DS; |
5bd4f169 | 1155 | break; |
411e1bfb | 1156 | case BFD_RELOC_PPC64_TOC16_LO_DS: r = R_PPC64_TOC16_LO_DS; |
5bd4f169 | 1157 | break; |
411e1bfb | 1158 | case BFD_RELOC_PPC64_PLTGOT16_DS: r = R_PPC64_PLTGOT16_DS; |
5bd4f169 | 1159 | break; |
411e1bfb | 1160 | case BFD_RELOC_PPC64_PLTGOT16_LO_DS: r = R_PPC64_PLTGOT16_LO_DS; |
5bd4f169 | 1161 | break; |
c213164a | 1162 | case BFD_RELOC_PPC64_TLS_PCREL: |
411e1bfb | 1163 | case BFD_RELOC_PPC_TLS: r = R_PPC64_TLS; |
5bd4f169 | 1164 | break; |
727fc41e AM |
1165 | case BFD_RELOC_PPC_TLSGD: r = R_PPC64_TLSGD; |
1166 | break; | |
1167 | case BFD_RELOC_PPC_TLSLD: r = R_PPC64_TLSLD; | |
1168 | break; | |
411e1bfb | 1169 | case BFD_RELOC_PPC_DTPMOD: r = R_PPC64_DTPMOD64; |
5bd4f169 | 1170 | break; |
411e1bfb | 1171 | case BFD_RELOC_PPC_TPREL16: r = R_PPC64_TPREL16; |
5bd4f169 | 1172 | break; |
411e1bfb | 1173 | case BFD_RELOC_PPC_TPREL16_LO: r = R_PPC64_TPREL16_LO; |
5bd4f169 | 1174 | break; |
411e1bfb | 1175 | case BFD_RELOC_PPC_TPREL16_HI: r = R_PPC64_TPREL16_HI; |
5bd4f169 | 1176 | break; |
f9c6b907 AM |
1177 | case BFD_RELOC_PPC64_TPREL16_HIGH: r = R_PPC64_TPREL16_HIGH; |
1178 | break; | |
411e1bfb | 1179 | case BFD_RELOC_PPC_TPREL16_HA: r = R_PPC64_TPREL16_HA; |
5bd4f169 | 1180 | break; |
f9c6b907 AM |
1181 | case BFD_RELOC_PPC64_TPREL16_HIGHA: r = R_PPC64_TPREL16_HIGHA; |
1182 | break; | |
411e1bfb | 1183 | case BFD_RELOC_PPC_TPREL: r = R_PPC64_TPREL64; |
5bd4f169 | 1184 | break; |
411e1bfb AM |
1185 | case BFD_RELOC_PPC_DTPREL16: r = R_PPC64_DTPREL16; |
1186 | break; | |
1187 | case BFD_RELOC_PPC_DTPREL16_LO: r = R_PPC64_DTPREL16_LO; | |
1188 | break; | |
1189 | case BFD_RELOC_PPC_DTPREL16_HI: r = R_PPC64_DTPREL16_HI; | |
1190 | break; | |
f9c6b907 AM |
1191 | case BFD_RELOC_PPC64_DTPREL16_HIGH: r = R_PPC64_DTPREL16_HIGH; |
1192 | break; | |
411e1bfb AM |
1193 | case BFD_RELOC_PPC_DTPREL16_HA: r = R_PPC64_DTPREL16_HA; |
1194 | break; | |
f9c6b907 AM |
1195 | case BFD_RELOC_PPC64_DTPREL16_HIGHA: r = R_PPC64_DTPREL16_HIGHA; |
1196 | break; | |
411e1bfb AM |
1197 | case BFD_RELOC_PPC_DTPREL: r = R_PPC64_DTPREL64; |
1198 | break; | |
1199 | case BFD_RELOC_PPC_GOT_TLSGD16: r = R_PPC64_GOT_TLSGD16; | |
1200 | break; | |
1201 | case BFD_RELOC_PPC_GOT_TLSGD16_LO: r = R_PPC64_GOT_TLSGD16_LO; | |
1202 | break; | |
1203 | case BFD_RELOC_PPC_GOT_TLSGD16_HI: r = R_PPC64_GOT_TLSGD16_HI; | |
1204 | break; | |
1205 | case BFD_RELOC_PPC_GOT_TLSGD16_HA: r = R_PPC64_GOT_TLSGD16_HA; | |
1206 | break; | |
1207 | case BFD_RELOC_PPC_GOT_TLSLD16: r = R_PPC64_GOT_TLSLD16; | |
1208 | break; | |
1209 | case BFD_RELOC_PPC_GOT_TLSLD16_LO: r = R_PPC64_GOT_TLSLD16_LO; | |
1210 | break; | |
1211 | case BFD_RELOC_PPC_GOT_TLSLD16_HI: r = R_PPC64_GOT_TLSLD16_HI; | |
1212 | break; | |
1213 | case BFD_RELOC_PPC_GOT_TLSLD16_HA: r = R_PPC64_GOT_TLSLD16_HA; | |
1214 | break; | |
1215 | case BFD_RELOC_PPC_GOT_TPREL16: r = R_PPC64_GOT_TPREL16_DS; | |
1216 | break; | |
1217 | case BFD_RELOC_PPC_GOT_TPREL16_LO: r = R_PPC64_GOT_TPREL16_LO_DS; | |
1218 | break; | |
1219 | case BFD_RELOC_PPC_GOT_TPREL16_HI: r = R_PPC64_GOT_TPREL16_HI; | |
1220 | break; | |
1221 | case BFD_RELOC_PPC_GOT_TPREL16_HA: r = R_PPC64_GOT_TPREL16_HA; | |
1222 | break; | |
1223 | case BFD_RELOC_PPC_GOT_DTPREL16: r = R_PPC64_GOT_DTPREL16_DS; | |
1224 | break; | |
1225 | case BFD_RELOC_PPC_GOT_DTPREL16_LO: r = R_PPC64_GOT_DTPREL16_LO_DS; | |
1226 | break; | |
1227 | case BFD_RELOC_PPC_GOT_DTPREL16_HI: r = R_PPC64_GOT_DTPREL16_HI; | |
1228 | break; | |
1229 | case BFD_RELOC_PPC_GOT_DTPREL16_HA: r = R_PPC64_GOT_DTPREL16_HA; | |
1230 | break; | |
1231 | case BFD_RELOC_PPC64_TPREL16_DS: r = R_PPC64_TPREL16_DS; | |
1232 | break; | |
1233 | case BFD_RELOC_PPC64_TPREL16_LO_DS: r = R_PPC64_TPREL16_LO_DS; | |
1234 | break; | |
1235 | case BFD_RELOC_PPC64_TPREL16_HIGHER: r = R_PPC64_TPREL16_HIGHER; | |
1236 | break; | |
1237 | case BFD_RELOC_PPC64_TPREL16_HIGHERA: r = R_PPC64_TPREL16_HIGHERA; | |
1238 | break; | |
1239 | case BFD_RELOC_PPC64_TPREL16_HIGHEST: r = R_PPC64_TPREL16_HIGHEST; | |
1240 | break; | |
1241 | case BFD_RELOC_PPC64_TPREL16_HIGHESTA: r = R_PPC64_TPREL16_HIGHESTA; | |
1242 | break; | |
1243 | case BFD_RELOC_PPC64_DTPREL16_DS: r = R_PPC64_DTPREL16_DS; | |
1244 | break; | |
1245 | case BFD_RELOC_PPC64_DTPREL16_LO_DS: r = R_PPC64_DTPREL16_LO_DS; | |
1246 | break; | |
1247 | case BFD_RELOC_PPC64_DTPREL16_HIGHER: r = R_PPC64_DTPREL16_HIGHER; | |
1248 | break; | |
1249 | case BFD_RELOC_PPC64_DTPREL16_HIGHERA: r = R_PPC64_DTPREL16_HIGHERA; | |
1250 | break; | |
1251 | case BFD_RELOC_PPC64_DTPREL16_HIGHEST: r = R_PPC64_DTPREL16_HIGHEST; | |
1252 | break; | |
1253 | case BFD_RELOC_PPC64_DTPREL16_HIGHESTA: r = R_PPC64_DTPREL16_HIGHESTA; | |
1254 | break; | |
25f23106 AM |
1255 | case BFD_RELOC_16_PCREL: r = R_PPC64_REL16; |
1256 | break; | |
1257 | case BFD_RELOC_LO16_PCREL: r = R_PPC64_REL16_LO; | |
1258 | break; | |
1259 | case BFD_RELOC_HI16_PCREL: r = R_PPC64_REL16_HI; | |
1260 | break; | |
1261 | case BFD_RELOC_HI16_S_PCREL: r = R_PPC64_REL16_HA; | |
1262 | break; | |
4a969973 AM |
1263 | case BFD_RELOC_PPC64_REL16_HIGH: r = R_PPC64_REL16_HIGH; |
1264 | break; | |
1265 | case BFD_RELOC_PPC64_REL16_HIGHA: r = R_PPC64_REL16_HIGHA; | |
1266 | break; | |
1267 | case BFD_RELOC_PPC64_REL16_HIGHER: r = R_PPC64_REL16_HIGHER; | |
1268 | break; | |
1269 | case BFD_RELOC_PPC64_REL16_HIGHERA: r = R_PPC64_REL16_HIGHERA; | |
1270 | break; | |
1271 | case BFD_RELOC_PPC64_REL16_HIGHEST: r = R_PPC64_REL16_HIGHEST; | |
1272 | break; | |
1273 | case BFD_RELOC_PPC64_REL16_HIGHESTA: r = R_PPC64_REL16_HIGHESTA; | |
1274 | break; | |
7ba71655 AM |
1275 | case BFD_RELOC_PPC_16DX_HA: r = R_PPC64_16DX_HA; |
1276 | break; | |
a680de9a PB |
1277 | case BFD_RELOC_PPC_REL16DX_HA: r = R_PPC64_REL16DX_HA; |
1278 | break; | |
006589cf AM |
1279 | case BFD_RELOC_PPC64_ENTRY: r = R_PPC64_ENTRY; |
1280 | break; | |
45965137 AM |
1281 | case BFD_RELOC_PPC64_ADDR64_LOCAL: r = R_PPC64_ADDR64_LOCAL; |
1282 | break; | |
5663e321 AM |
1283 | case BFD_RELOC_PPC64_D34: r = R_PPC64_D34; |
1284 | break; | |
1285 | case BFD_RELOC_PPC64_D34_LO: r = R_PPC64_D34_LO; | |
1286 | break; | |
1287 | case BFD_RELOC_PPC64_D34_HI30: r = R_PPC64_D34_HI30; | |
1288 | break; | |
1289 | case BFD_RELOC_PPC64_D34_HA30: r = R_PPC64_D34_HA30; | |
1290 | break; | |
1291 | case BFD_RELOC_PPC64_PCREL34: r = R_PPC64_PCREL34; | |
1292 | break; | |
1293 | case BFD_RELOC_PPC64_GOT_PCREL34: r = R_PPC64_GOT_PCREL34; | |
1294 | break; | |
1295 | case BFD_RELOC_PPC64_PLT_PCREL34: r = R_PPC64_PLT_PCREL34; | |
1296 | break; | |
c213164a AM |
1297 | case BFD_RELOC_PPC64_TPREL34: r = R_PPC64_TPREL34; |
1298 | break; | |
1299 | case BFD_RELOC_PPC64_DTPREL34: r = R_PPC64_DTPREL34; | |
1300 | break; | |
87c69f97 | 1301 | case BFD_RELOC_PPC64_GOT_TLSGD_PCREL34: r = R_PPC64_GOT_TLSGD_PCREL34; |
c213164a | 1302 | break; |
87c69f97 | 1303 | case BFD_RELOC_PPC64_GOT_TLSLD_PCREL34: r = R_PPC64_GOT_TLSLD_PCREL34; |
c213164a | 1304 | break; |
87c69f97 | 1305 | case BFD_RELOC_PPC64_GOT_TPREL_PCREL34: r = R_PPC64_GOT_TPREL_PCREL34; |
c213164a | 1306 | break; |
87c69f97 | 1307 | case BFD_RELOC_PPC64_GOT_DTPREL_PCREL34: r = R_PPC64_GOT_DTPREL_PCREL34; |
c213164a | 1308 | break; |
5663e321 AM |
1309 | case BFD_RELOC_PPC64_ADDR16_HIGHER34: r = R_PPC64_ADDR16_HIGHER34; |
1310 | break; | |
1311 | case BFD_RELOC_PPC64_ADDR16_HIGHERA34: r = R_PPC64_ADDR16_HIGHERA34; | |
1312 | break; | |
1313 | case BFD_RELOC_PPC64_ADDR16_HIGHEST34: r = R_PPC64_ADDR16_HIGHEST34; | |
1314 | break; | |
1315 | case BFD_RELOC_PPC64_ADDR16_HIGHESTA34: r = R_PPC64_ADDR16_HIGHESTA34; | |
1316 | break; | |
1317 | case BFD_RELOC_PPC64_REL16_HIGHER34: r = R_PPC64_REL16_HIGHER34; | |
1318 | break; | |
1319 | case BFD_RELOC_PPC64_REL16_HIGHERA34: r = R_PPC64_REL16_HIGHERA34; | |
1320 | break; | |
1321 | case BFD_RELOC_PPC64_REL16_HIGHEST34: r = R_PPC64_REL16_HIGHEST34; | |
1322 | break; | |
1323 | case BFD_RELOC_PPC64_REL16_HIGHESTA34: r = R_PPC64_REL16_HIGHESTA34; | |
1324 | break; | |
1325 | case BFD_RELOC_PPC64_D28: r = R_PPC64_D28; | |
1326 | break; | |
1327 | case BFD_RELOC_PPC64_PCREL28: r = R_PPC64_PCREL28; | |
1328 | break; | |
411e1bfb AM |
1329 | case BFD_RELOC_VTABLE_INHERIT: r = R_PPC64_GNU_VTINHERIT; |
1330 | break; | |
1331 | case BFD_RELOC_VTABLE_ENTRY: r = R_PPC64_GNU_VTENTRY; | |
5bd4f169 AM |
1332 | break; |
1333 | } | |
1334 | ||
4ce794b7 | 1335 | return ppc64_elf_howto_table[r]; |
5bd4f169 AM |
1336 | }; |
1337 | ||
157090f7 | 1338 | static reloc_howto_type * |
87c69f97 | 1339 | ppc64_elf_reloc_name_lookup (bfd *abfd, const char *r_name) |
157090f7 AM |
1340 | { |
1341 | unsigned int i; | |
87c69f97 AM |
1342 | static char *compat_map[][2] = { |
1343 | { "R_PPC64_GOT_TLSGD34", "R_PPC64_GOT_TLSGD_PCREL34" }, | |
1344 | { "R_PPC64_GOT_TLSLD34", "R_PPC64_GOT_TLSLD_PCREL34" }, | |
1345 | { "R_PPC64_GOT_TPREL34", "R_PPC64_GOT_TPREL_PCREL34" }, | |
1346 | { "R_PPC64_GOT_DTPREL34", "R_PPC64_GOT_DTPREL_PCREL34" } | |
1347 | }; | |
157090f7 | 1348 | |
a4b6fadd | 1349 | for (i = 0; i < ARRAY_SIZE (ppc64_elf_howto_raw); i++) |
157090f7 AM |
1350 | if (ppc64_elf_howto_raw[i].name != NULL |
1351 | && strcasecmp (ppc64_elf_howto_raw[i].name, r_name) == 0) | |
1352 | return &ppc64_elf_howto_raw[i]; | |
1353 | ||
87c69f97 AM |
1354 | /* Handle old names of relocations in case they were used by |
1355 | .reloc directives. | |
1356 | FIXME: Remove this soon. Mapping the reloc names is very likely | |
1357 | completely unnecessary. */ | |
1358 | for (i = 0; i < ARRAY_SIZE (compat_map); i++) | |
1359 | if (strcasecmp (compat_map[i][0], r_name) == 0) | |
1360 | { | |
1361 | _bfd_error_handler (_("warning: %s should be used rather than %s"), | |
1362 | compat_map[i][1], compat_map[i][0]); | |
1363 | return ppc64_elf_reloc_name_lookup (abfd, compat_map[i][1]); | |
1364 | } | |
1365 | ||
157090f7 AM |
1366 | return NULL; |
1367 | } | |
1368 | ||
5bd4f169 AM |
1369 | /* Set the howto pointer for a PowerPC ELF reloc. */ |
1370 | ||
0a1b45a2 | 1371 | static bool |
4aef7643 | 1372 | ppc64_elf_info_to_howto (bfd *abfd, arelent *cache_ptr, |
4ce794b7 | 1373 | Elf_Internal_Rela *dst) |
5bd4f169 | 1374 | { |
65f38f15 AM |
1375 | unsigned int type; |
1376 | ||
ef60b7ff | 1377 | /* Initialize howto table if needed. */ |
5bd4f169 | 1378 | if (!ppc64_elf_howto_table[R_PPC64_ADDR32]) |
5bd4f169 AM |
1379 | ppc_howto_init (); |
1380 | ||
65f38f15 | 1381 | type = ELF64_R_TYPE (dst->r_info); |
a4b6fadd | 1382 | if (type >= ARRAY_SIZE (ppc64_elf_howto_table)) |
d0fb9a8d | 1383 | { |
695344c0 | 1384 | /* xgettext:c-format */ |
0aa13fee | 1385 | _bfd_error_handler (_("%pB: unsupported relocation type %#x"), |
cf97bcb0 | 1386 | abfd, type); |
f3185997 | 1387 | bfd_set_error (bfd_error_bad_value); |
0a1b45a2 | 1388 | return false; |
d0fb9a8d | 1389 | } |
65f38f15 | 1390 | cache_ptr->howto = ppc64_elf_howto_table[type]; |
f3185997 NC |
1391 | if (cache_ptr->howto == NULL || cache_ptr->howto->name == NULL) |
1392 | { | |
1393 | /* xgettext:c-format */ | |
1394 | _bfd_error_handler (_("%pB: unsupported relocation type %#x"), | |
1395 | abfd, type); | |
1396 | bfd_set_error (bfd_error_bad_value); | |
0a1b45a2 | 1397 | return false; |
f3185997 | 1398 | } |
2cdcc330 | 1399 | |
0a1b45a2 | 1400 | return true; |
5bd4f169 AM |
1401 | } |
1402 | ||
04c9666a | 1403 | /* Handle the R_PPC64_ADDR16_HA and similar relocs. */ |
5bd4f169 AM |
1404 | |
1405 | static bfd_reloc_status_type | |
4ce794b7 AM |
1406 | ppc64_elf_ha_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, |
1407 | void *data, asection *input_section, | |
1408 | bfd *output_bfd, char **error_message) | |
5bd4f169 | 1409 | { |
a680de9a PB |
1410 | enum elf_ppc64_reloc_type r_type; |
1411 | long insn; | |
1412 | bfd_size_type octets; | |
3de43e7b | 1413 | bfd_vma value; |
a680de9a | 1414 | |
805fc799 AM |
1415 | /* If this is a relocatable link (output_bfd test tells us), just |
1416 | call the generic function. Any adjustment will be done at final | |
1417 | link time. */ | |
1418 | if (output_bfd != NULL) | |
cedb70c5 | 1419 | return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, |
805fc799 AM |
1420 | input_section, output_bfd, error_message); |
1421 | ||
5663e321 AM |
1422 | /* Adjust the addend for sign extension of the low 16 (or 34) bits. |
1423 | We won't actually be using the low bits, so trashing them | |
805fc799 | 1424 | doesn't matter. */ |
a680de9a | 1425 | r_type = reloc_entry->howto->type; |
5663e321 AM |
1426 | if (r_type == R_PPC64_ADDR16_HIGHERA34 |
1427 | || r_type == R_PPC64_ADDR16_HIGHESTA34 | |
1428 | || r_type == R_PPC64_REL16_HIGHERA34 | |
1429 | || r_type == R_PPC64_REL16_HIGHESTA34) | |
1430 | reloc_entry->addend += 1ULL << 33; | |
1431 | else | |
1432 | reloc_entry->addend += 1U << 15; | |
a680de9a PB |
1433 | if (r_type != R_PPC64_REL16DX_HA) |
1434 | return bfd_reloc_continue; | |
1435 | ||
1436 | value = 0; | |
1437 | if (!bfd_is_com_section (symbol->section)) | |
1438 | value = symbol->value; | |
1439 | value += (reloc_entry->addend | |
1440 | + symbol->section->output_offset | |
1441 | + symbol->section->output_section->vma); | |
1442 | value -= (reloc_entry->address | |
1443 | + input_section->output_offset | |
1444 | + input_section->output_section->vma); | |
3de43e7b | 1445 | value = (bfd_signed_vma) value >> 16; |
a680de9a | 1446 | |
bb294208 | 1447 | octets = reloc_entry->address * OCTETS_PER_BYTE (abfd, input_section); |
b54509b8 AM |
1448 | if (!bfd_reloc_offset_in_range (reloc_entry->howto, abfd, |
1449 | input_section, octets)) | |
1450 | return bfd_reloc_outofrange; | |
1451 | ||
a680de9a PB |
1452 | insn = bfd_get_32 (abfd, (bfd_byte *) data + octets); |
1453 | insn &= ~0x1fffc1; | |
3de43e7b | 1454 | insn |= (value & 0xffc1) | ((value & 0x3e) << 15); |
a680de9a | 1455 | bfd_put_32 (abfd, insn, (bfd_byte *) data + octets); |
3de43e7b | 1456 | if (value + 0x8000 > 0xffff) |
a680de9a PB |
1457 | return bfd_reloc_overflow; |
1458 | return bfd_reloc_ok; | |
805fc799 | 1459 | } |
5bd4f169 | 1460 | |
2441e016 AM |
1461 | static bfd_reloc_status_type |
1462 | ppc64_elf_branch_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, | |
1463 | void *data, asection *input_section, | |
1464 | bfd *output_bfd, char **error_message) | |
1465 | { | |
1466 | if (output_bfd != NULL) | |
1467 | return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, | |
1468 | input_section, output_bfd, error_message); | |
1469 | ||
6313825c AM |
1470 | if (symbol->section->owner == NULL |
1471 | || !is_ppc64_elf (symbol->section->owner)) | |
1472 | return bfd_reloc_continue; | |
1473 | ||
699733f6 AM |
1474 | if (strcmp (symbol->section->name, ".opd") == 0 |
1475 | && (symbol->section->owner->flags & DYNAMIC) == 0) | |
2441e016 AM |
1476 | { |
1477 | bfd_vma dest = opd_entry_value (symbol->section, | |
1478 | symbol->value + reloc_entry->addend, | |
0a1b45a2 | 1479 | NULL, NULL, false); |
2441e016 AM |
1480 | if (dest != (bfd_vma) -1) |
1481 | reloc_entry->addend = dest - (symbol->value | |
1482 | + symbol->section->output_section->vma | |
1483 | + symbol->section->output_offset); | |
1484 | } | |
810d4e75 AM |
1485 | else |
1486 | { | |
1487 | elf_symbol_type *elfsym = (elf_symbol_type *) symbol; | |
1488 | ||
1489 | if (symbol->section->owner != abfd | |
1490 | && abiversion (symbol->section->owner) >= 2) | |
1491 | { | |
1492 | unsigned int i; | |
1493 | ||
1494 | for (i = 0; i < symbol->section->owner->symcount; ++i) | |
1495 | { | |
1496 | asymbol *symdef = symbol->section->owner->outsymbols[i]; | |
1497 | ||
1498 | if (strcmp (symdef->name, symbol->name) == 0) | |
1499 | { | |
1500 | elfsym = (elf_symbol_type *) symdef; | |
1501 | break; | |
1502 | } | |
1503 | } | |
1504 | } | |
1505 | reloc_entry->addend | |
1506 | += PPC64_LOCAL_ENTRY_OFFSET (elfsym->internal_elf_sym.st_other); | |
1507 | } | |
2441e016 AM |
1508 | return bfd_reloc_continue; |
1509 | } | |
1510 | ||
805fc799 | 1511 | static bfd_reloc_status_type |
4ce794b7 AM |
1512 | ppc64_elf_brtaken_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, |
1513 | void *data, asection *input_section, | |
1514 | bfd *output_bfd, char **error_message) | |
805fc799 AM |
1515 | { |
1516 | long insn; | |
04c9666a | 1517 | enum elf_ppc64_reloc_type r_type; |
805fc799 | 1518 | bfd_size_type octets; |
794e51c0 | 1519 | /* Assume 'at' branch hints. */ |
0a1b45a2 | 1520 | bool is_isa_v2 = true; |
805fc799 AM |
1521 | |
1522 | /* If this is a relocatable link (output_bfd test tells us), just | |
1523 | call the generic function. Any adjustment will be done at final | |
1524 | link time. */ | |
5bd4f169 | 1525 | if (output_bfd != NULL) |
cedb70c5 | 1526 | return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, |
805fc799 AM |
1527 | input_section, output_bfd, error_message); |
1528 | ||
bb294208 | 1529 | octets = reloc_entry->address * OCTETS_PER_BYTE (abfd, input_section); |
b54509b8 AM |
1530 | if (!bfd_reloc_offset_in_range (reloc_entry->howto, abfd, |
1531 | input_section, octets)) | |
1532 | return bfd_reloc_outofrange; | |
1533 | ||
805fc799 AM |
1534 | insn = bfd_get_32 (abfd, (bfd_byte *) data + octets); |
1535 | insn &= ~(0x01 << 21); | |
4ce794b7 | 1536 | r_type = reloc_entry->howto->type; |
805fc799 AM |
1537 | if (r_type == R_PPC64_ADDR14_BRTAKEN |
1538 | || r_type == R_PPC64_REL14_BRTAKEN) | |
cedb70c5 | 1539 | insn |= 0x01 << 21; /* 'y' or 't' bit, lowest bit of BO field. */ |
805fc799 | 1540 | |
794e51c0 | 1541 | if (is_isa_v2) |
5bd4f169 | 1542 | { |
805fc799 AM |
1543 | /* Set 'a' bit. This is 0b00010 in BO field for branch |
1544 | on CR(BI) insns (BO == 001at or 011at), and 0b01000 | |
1545 | for branch on CTR insns (BO == 1a00t or 1a01t). */ | |
1546 | if ((insn & (0x14 << 21)) == (0x04 << 21)) | |
1547 | insn |= 0x02 << 21; | |
1548 | else if ((insn & (0x14 << 21)) == (0x10 << 21)) | |
1549 | insn |= 0x08 << 21; | |
1550 | else | |
2441e016 | 1551 | goto out; |
5bd4f169 | 1552 | } |
805fc799 AM |
1553 | else |
1554 | { | |
1555 | bfd_vma target = 0; | |
1556 | bfd_vma from; | |
5bd4f169 | 1557 | |
805fc799 AM |
1558 | if (!bfd_is_com_section (symbol->section)) |
1559 | target = symbol->value; | |
1560 | target += symbol->section->output_section->vma; | |
1561 | target += symbol->section->output_offset; | |
1562 | target += reloc_entry->addend; | |
5bd4f169 | 1563 | |
805fc799 AM |
1564 | from = (reloc_entry->address |
1565 | + input_section->output_offset | |
1566 | + input_section->output_section->vma); | |
5bd4f169 | 1567 | |
805fc799 AM |
1568 | /* Invert 'y' bit if not the default. */ |
1569 | if ((bfd_signed_vma) (target - from) < 0) | |
1570 | insn ^= 0x01 << 21; | |
1571 | } | |
4ce794b7 | 1572 | bfd_put_32 (abfd, insn, (bfd_byte *) data + octets); |
2441e016 AM |
1573 | out: |
1574 | return ppc64_elf_branch_reloc (abfd, reloc_entry, symbol, data, | |
1575 | input_section, output_bfd, error_message); | |
805fc799 | 1576 | } |
5bd4f169 | 1577 | |
805fc799 | 1578 | static bfd_reloc_status_type |
4ce794b7 AM |
1579 | ppc64_elf_sectoff_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, |
1580 | void *data, asection *input_section, | |
1581 | bfd *output_bfd, char **error_message) | |
805fc799 AM |
1582 | { |
1583 | /* If this is a relocatable link (output_bfd test tells us), just | |
1584 | call the generic function. Any adjustment will be done at final | |
1585 | link time. */ | |
1586 | if (output_bfd != NULL) | |
cedb70c5 | 1587 | return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, |
805fc799 | 1588 | input_section, output_bfd, error_message); |
5bd4f169 | 1589 | |
805fc799 AM |
1590 | /* Subtract the symbol section base address. */ |
1591 | reloc_entry->addend -= symbol->section->output_section->vma; | |
5bd4f169 AM |
1592 | return bfd_reloc_continue; |
1593 | } | |
1594 | ||
805fc799 | 1595 | static bfd_reloc_status_type |
4ce794b7 AM |
1596 | ppc64_elf_sectoff_ha_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, |
1597 | void *data, asection *input_section, | |
1598 | bfd *output_bfd, char **error_message) | |
805fc799 AM |
1599 | { |
1600 | /* If this is a relocatable link (output_bfd test tells us), just | |
1601 | call the generic function. Any adjustment will be done at final | |
1602 | link time. */ | |
1603 | if (output_bfd != NULL) | |
cedb70c5 | 1604 | return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, |
805fc799 AM |
1605 | input_section, output_bfd, error_message); |
1606 | ||
1607 | /* Subtract the symbol section base address. */ | |
1608 | reloc_entry->addend -= symbol->section->output_section->vma; | |
1609 | ||
1610 | /* Adjust the addend for sign extension of the low 16 bits. */ | |
1611 | reloc_entry->addend += 0x8000; | |
1612 | return bfd_reloc_continue; | |
1613 | } | |
1614 | ||
1615 | static bfd_reloc_status_type | |
4ce794b7 AM |
1616 | ppc64_elf_toc_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, |
1617 | void *data, asection *input_section, | |
1618 | bfd *output_bfd, char **error_message) | |
805fc799 AM |
1619 | { |
1620 | bfd_vma TOCstart; | |
1621 | ||
1622 | /* If this is a relocatable link (output_bfd test tells us), just | |
1623 | call the generic function. Any adjustment will be done at final | |
1624 | link time. */ | |
1625 | if (output_bfd != NULL) | |
cedb70c5 | 1626 | return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, |
805fc799 AM |
1627 | input_section, output_bfd, error_message); |
1628 | ||
1629 | TOCstart = _bfd_get_gp_value (input_section->output_section->owner); | |
1630 | if (TOCstart == 0) | |
1c865ab2 | 1631 | TOCstart = ppc64_elf_set_toc (NULL, input_section->output_section->owner); |
805fc799 AM |
1632 | |
1633 | /* Subtract the TOC base address. */ | |
1634 | reloc_entry->addend -= TOCstart + TOC_BASE_OFF; | |
1635 | return bfd_reloc_continue; | |
1636 | } | |
1637 | ||
1638 | static bfd_reloc_status_type | |
4ce794b7 AM |
1639 | ppc64_elf_toc_ha_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, |
1640 | void *data, asection *input_section, | |
1641 | bfd *output_bfd, char **error_message) | |
805fc799 AM |
1642 | { |
1643 | bfd_vma TOCstart; | |
1644 | ||
1645 | /* If this is a relocatable link (output_bfd test tells us), just | |
1646 | call the generic function. Any adjustment will be done at final | |
1647 | link time. */ | |
1648 | if (output_bfd != NULL) | |
cedb70c5 | 1649 | return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, |
805fc799 AM |
1650 | input_section, output_bfd, error_message); |
1651 | ||
1652 | TOCstart = _bfd_get_gp_value (input_section->output_section->owner); | |
1653 | if (TOCstart == 0) | |
1c865ab2 | 1654 | TOCstart = ppc64_elf_set_toc (NULL, input_section->output_section->owner); |
805fc799 AM |
1655 | |
1656 | /* Subtract the TOC base address. */ | |
1657 | reloc_entry->addend -= TOCstart + TOC_BASE_OFF; | |
1658 | ||
1659 | /* Adjust the addend for sign extension of the low 16 bits. */ | |
1660 | reloc_entry->addend += 0x8000; | |
1661 | return bfd_reloc_continue; | |
1662 | } | |
1663 | ||
1664 | static bfd_reloc_status_type | |
4ce794b7 AM |
1665 | ppc64_elf_toc64_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, |
1666 | void *data, asection *input_section, | |
1667 | bfd *output_bfd, char **error_message) | |
805fc799 AM |
1668 | { |
1669 | bfd_vma TOCstart; | |
1670 | bfd_size_type octets; | |
1671 | ||
1672 | /* If this is a relocatable link (output_bfd test tells us), just | |
1673 | call the generic function. Any adjustment will be done at final | |
1674 | link time. */ | |
1675 | if (output_bfd != NULL) | |
cedb70c5 | 1676 | return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, |
805fc799 AM |
1677 | input_section, output_bfd, error_message); |
1678 | ||
b54509b8 AM |
1679 | octets = reloc_entry->address * OCTETS_PER_BYTE (abfd, input_section); |
1680 | if (!bfd_reloc_offset_in_range (reloc_entry->howto, abfd, | |
1681 | input_section, octets)) | |
1682 | return bfd_reloc_outofrange; | |
1683 | ||
805fc799 AM |
1684 | TOCstart = _bfd_get_gp_value (input_section->output_section->owner); |
1685 | if (TOCstart == 0) | |
1c865ab2 | 1686 | TOCstart = ppc64_elf_set_toc (NULL, input_section->output_section->owner); |
805fc799 | 1687 | |
805fc799 AM |
1688 | bfd_put_64 (abfd, TOCstart + TOC_BASE_OFF, (bfd_byte *) data + octets); |
1689 | return bfd_reloc_ok; | |
1690 | } | |
1691 | ||
5663e321 AM |
1692 | static bfd_reloc_status_type |
1693 | ppc64_elf_prefix_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, | |
1694 | void *data, asection *input_section, | |
1695 | bfd *output_bfd, char **error_message) | |
1696 | { | |
1697 | uint64_t insn; | |
1698 | bfd_vma targ; | |
b54509b8 | 1699 | bfd_size_type octets; |
5663e321 AM |
1700 | |
1701 | if (output_bfd != NULL) | |
1702 | return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, | |
1703 | input_section, output_bfd, error_message); | |
1704 | ||
b54509b8 AM |
1705 | octets = reloc_entry->address * OCTETS_PER_BYTE (abfd, input_section); |
1706 | if (!bfd_reloc_offset_in_range (reloc_entry->howto, abfd, | |
1707 | input_section, octets)) | |
1708 | return bfd_reloc_outofrange; | |
1709 | ||
1710 | insn = bfd_get_32 (abfd, (bfd_byte *) data + octets); | |
5663e321 | 1711 | insn <<= 32; |
b54509b8 | 1712 | insn |= bfd_get_32 (abfd, (bfd_byte *) data + octets + 4); |
5663e321 AM |
1713 | |
1714 | targ = (symbol->section->output_section->vma | |
1715 | + symbol->section->output_offset | |
1716 | + reloc_entry->addend); | |
1717 | if (!bfd_is_com_section (symbol->section)) | |
1718 | targ += symbol->value; | |
1719 | if (reloc_entry->howto->type == R_PPC64_D34_HA30) | |
1720 | targ += 1ULL << 33; | |
1721 | if (reloc_entry->howto->pc_relative) | |
1722 | { | |
1723 | bfd_vma from = (reloc_entry->address | |
1724 | + input_section->output_offset | |
1725 | + input_section->output_section->vma); | |
1726 | targ -=from; | |
1727 | } | |
1728 | targ >>= reloc_entry->howto->rightshift; | |
1729 | insn &= ~reloc_entry->howto->dst_mask; | |
1730 | insn |= ((targ << 16) | (targ & 0xffff)) & reloc_entry->howto->dst_mask; | |
b54509b8 AM |
1731 | bfd_put_32 (abfd, insn >> 32, (bfd_byte *) data + octets); |
1732 | bfd_put_32 (abfd, insn, (bfd_byte *) data + octets + 4); | |
5663e321 AM |
1733 | if (reloc_entry->howto->complain_on_overflow == complain_overflow_signed |
1734 | && (targ + (1ULL << (reloc_entry->howto->bitsize - 1)) | |
1735 | >= 1ULL << reloc_entry->howto->bitsize)) | |
1736 | return bfd_reloc_overflow; | |
1737 | return bfd_reloc_ok; | |
1738 | } | |
1739 | ||
805fc799 | 1740 | static bfd_reloc_status_type |
4ce794b7 AM |
1741 | ppc64_elf_unhandled_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, |
1742 | void *data, asection *input_section, | |
1743 | bfd *output_bfd, char **error_message) | |
805fc799 AM |
1744 | { |
1745 | /* If this is a relocatable link (output_bfd test tells us), just | |
1746 | call the generic function. Any adjustment will be done at final | |
1747 | link time. */ | |
1748 | if (output_bfd != NULL) | |
cedb70c5 | 1749 | return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, |
805fc799 AM |
1750 | input_section, output_bfd, error_message); |
1751 | ||
1752 | if (error_message != NULL) | |
6f860418 AM |
1753 | *error_message = bfd_asprintf (_("generic linker can't handle %s"), |
1754 | reloc_entry->howto->name); | |
805fc799 AM |
1755 | return bfd_reloc_dangerous; |
1756 | } | |
1757 | ||
927be08e AM |
1758 | /* Track GOT entries needed for a given symbol. We might need more |
1759 | than one got entry per symbol. */ | |
1760 | struct got_entry | |
1761 | { | |
1762 | struct got_entry *next; | |
1763 | ||
1764 | /* The symbol addend that we'll be placing in the GOT. */ | |
1765 | bfd_vma addend; | |
1766 | ||
1767 | /* Unlike other ELF targets, we use separate GOT entries for the same | |
1768 | symbol referenced from different input files. This is to support | |
1769 | automatic multiple TOC/GOT sections, where the TOC base can vary | |
1770 | from one input file to another. After partitioning into TOC groups | |
1771 | we merge entries within the group. | |
1772 | ||
1773 | Point to the BFD owning this GOT entry. */ | |
1774 | bfd *owner; | |
1775 | ||
1776 | /* Zero for non-tls entries, or TLS_TLS and one of TLS_GD, TLS_LD, | |
1777 | TLS_TPREL or TLS_DTPREL for tls entries. */ | |
f961d9dd | 1778 | unsigned char tls_type; |
927be08e AM |
1779 | |
1780 | /* Non-zero if got.ent points to real entry. */ | |
f961d9dd | 1781 | unsigned char is_indirect; |
927be08e AM |
1782 | |
1783 | /* Reference count until size_dynamic_sections, GOT offset thereafter. */ | |
1784 | union | |
2cdcc330 AM |
1785 | { |
1786 | bfd_signed_vma refcount; | |
1787 | bfd_vma offset; | |
1788 | struct got_entry *ent; | |
1789 | } got; | |
927be08e AM |
1790 | }; |
1791 | ||
1792 | /* The same for PLT. */ | |
1793 | struct plt_entry | |
1794 | { | |
1795 | struct plt_entry *next; | |
1796 | ||
1797 | bfd_vma addend; | |
1798 | ||
1799 | union | |
2cdcc330 AM |
1800 | { |
1801 | bfd_signed_vma refcount; | |
1802 | bfd_vma offset; | |
1803 | } plt; | |
927be08e AM |
1804 | }; |
1805 | ||
e717da7e AM |
1806 | struct ppc64_elf_obj_tdata |
1807 | { | |
1808 | struct elf_obj_tdata elf; | |
1809 | ||
1810 | /* Shortcuts to dynamic linker sections. */ | |
1811 | asection *got; | |
1812 | asection *relgot; | |
1813 | ||
b3fac117 AM |
1814 | /* Used during garbage collection. We attach global symbols defined |
1815 | on removed .opd entries to this section so that the sym is removed. */ | |
1816 | asection *deleted_section; | |
81688140 | 1817 | |
927be08e | 1818 | /* TLS local dynamic got entry handling. Support for multiple GOT |
e717da7e | 1819 | sections means we potentially need one of these for each input bfd. */ |
927be08e | 1820 | struct got_entry tlsld_got; |
8860955f | 1821 | |
d77c8a4b AM |
1822 | /* Nonzero if this bfd has small toc/got relocs, ie. that expect |
1823 | the reloc to be in the range -32768 to 32767. */ | |
98528052 AM |
1824 | unsigned int has_small_toc_reloc : 1; |
1825 | ||
560c8763 AM |
1826 | /* Set if toc/got ha relocs detected not using r2, or lo reloc |
1827 | instruction not one we handle. */ | |
1828 | unsigned int unexpected_toc_insn : 1; | |
066f4018 | 1829 | |
903b777d AM |
1830 | /* Set if PLT/GOT/TOC relocs that can be optimised are present in |
1831 | this file. */ | |
1832 | unsigned int has_optrel : 1; | |
e717da7e AM |
1833 | }; |
1834 | ||
1835 | #define ppc64_elf_tdata(bfd) \ | |
1836 | ((struct ppc64_elf_obj_tdata *) (bfd)->tdata.any) | |
1837 | ||
1838 | #define ppc64_tlsld_got(bfd) \ | |
1839 | (&ppc64_elf_tdata (bfd)->tlsld_got) | |
1840 | ||
1841 | /* Override the generic function because we store some extras. */ | |
1842 | ||
0a1b45a2 | 1843 | static bool |
e717da7e AM |
1844 | ppc64_elf_mkobject (bfd *abfd) |
1845 | { | |
0ffa91dd | 1846 | return bfd_elf_allocate_object (abfd, sizeof (struct ppc64_elf_obj_tdata), |
4dfe6ac6 | 1847 | PPC64_ELF_DATA); |
e717da7e AM |
1848 | } |
1849 | ||
feee612b | 1850 | /* Fix bad default arch selected for a 64 bit input bfd when the |
14b57c7c | 1851 | default is 32 bit. Also select arch based on apuinfo. */ |
feee612b | 1852 | |
0a1b45a2 | 1853 | static bool |
4ce794b7 | 1854 | ppc64_elf_object_p (bfd *abfd) |
feee612b | 1855 | { |
14b57c7c | 1856 | if (!abfd->arch_info->the_default) |
0a1b45a2 | 1857 | return true; |
14b57c7c AM |
1858 | |
1859 | if (abfd->arch_info->bits_per_word == 32) | |
feee612b AM |
1860 | { |
1861 | Elf_Internal_Ehdr *i_ehdr = elf_elfheader (abfd); | |
1862 | ||
1863 | if (i_ehdr->e_ident[EI_CLASS] == ELFCLASS64) | |
1864 | { | |
1865 | /* Relies on arch after 32 bit default being 64 bit default. */ | |
1866 | abfd->arch_info = abfd->arch_info->next; | |
1867 | BFD_ASSERT (abfd->arch_info->bits_per_word == 64); | |
1868 | } | |
1869 | } | |
14b57c7c | 1870 | return _bfd_elf_ppc_set_arch (abfd); |
feee612b AM |
1871 | } |
1872 | ||
d37c89e5 AM |
1873 | /* Support for core dump NOTE sections. */ |
1874 | ||
0a1b45a2 | 1875 | static bool |
d37c89e5 AM |
1876 | ppc64_elf_grok_prstatus (bfd *abfd, Elf_Internal_Note *note) |
1877 | { | |
eea6121a | 1878 | size_t offset, size; |
d37c89e5 AM |
1879 | |
1880 | if (note->descsz != 504) | |
0a1b45a2 | 1881 | return false; |
d37c89e5 AM |
1882 | |
1883 | /* pr_cursig */ | |
228e534f | 1884 | elf_tdata (abfd)->core->signal = bfd_get_16 (abfd, note->descdata + 12); |
d37c89e5 AM |
1885 | |
1886 | /* pr_pid */ | |
228e534f | 1887 | elf_tdata (abfd)->core->lwpid = bfd_get_32 (abfd, note->descdata + 32); |
d37c89e5 AM |
1888 | |
1889 | /* pr_reg */ | |
1890 | offset = 112; | |
eea6121a | 1891 | size = 384; |
d37c89e5 AM |
1892 | |
1893 | /* Make a ".reg/999" section. */ | |
1894 | return _bfd_elfcore_make_pseudosection (abfd, ".reg", | |
eea6121a | 1895 | size, note->descpos + offset); |
d37c89e5 AM |
1896 | } |
1897 | ||
0a1b45a2 | 1898 | static bool |
d37c89e5 AM |
1899 | ppc64_elf_grok_psinfo (bfd *abfd, Elf_Internal_Note *note) |
1900 | { | |
1901 | if (note->descsz != 136) | |
0a1b45a2 | 1902 | return false; |
d37c89e5 | 1903 | |
228e534f | 1904 | elf_tdata (abfd)->core->pid |
bc989cdc | 1905 | = bfd_get_32 (abfd, note->descdata + 24); |
228e534f | 1906 | elf_tdata (abfd)->core->program |
d37c89e5 | 1907 | = _bfd_elfcore_strndup (abfd, note->descdata + 40, 16); |
228e534f | 1908 | elf_tdata (abfd)->core->command |
d37c89e5 AM |
1909 | = _bfd_elfcore_strndup (abfd, note->descdata + 56, 80); |
1910 | ||
0a1b45a2 | 1911 | return true; |
d37c89e5 AM |
1912 | } |
1913 | ||
183e98be AM |
1914 | static char * |
1915 | ppc64_elf_write_core_note (bfd *abfd, char *buf, int *bufsiz, int note_type, | |
1916 | ...) | |
1917 | { | |
1918 | switch (note_type) | |
1919 | { | |
1920 | default: | |
1921 | return NULL; | |
1922 | ||
1923 | case NT_PRPSINFO: | |
1924 | { | |
9ef6d1e3 | 1925 | char data[136] ATTRIBUTE_NONSTRING; |
183e98be AM |
1926 | va_list ap; |
1927 | ||
1928 | va_start (ap, note_type); | |
75cd47ed | 1929 | memset (data, 0, sizeof (data)); |
183e98be | 1930 | strncpy (data + 40, va_arg (ap, const char *), 16); |
be3e27bb | 1931 | #if GCC_VERSION == 8000 || GCC_VERSION == 8001 |
95da9854 | 1932 | DIAGNOSTIC_PUSH; |
be3e27bb | 1933 | /* GCC 8.0 and 8.1 warn about 80 equals destination size with |
95da9854 L |
1934 | -Wstringop-truncation: |
1935 | https://gcc.gnu.org/bugzilla/show_bug.cgi?id=85643 | |
1936 | */ | |
95da9854 L |
1937 | DIAGNOSTIC_IGNORE_STRINGOP_TRUNCATION; |
1938 | #endif | |
183e98be | 1939 | strncpy (data + 56, va_arg (ap, const char *), 80); |
be3e27bb | 1940 | #if GCC_VERSION == 8000 || GCC_VERSION == 8001 |
95da9854 | 1941 | DIAGNOSTIC_POP; |
fe75810f | 1942 | #endif |
183e98be AM |
1943 | va_end (ap); |
1944 | return elfcore_write_note (abfd, buf, bufsiz, | |
1945 | "CORE", note_type, data, sizeof (data)); | |
1946 | } | |
1947 | ||
1948 | case NT_PRSTATUS: | |
1949 | { | |
1950 | char data[504]; | |
1951 | va_list ap; | |
1952 | long pid; | |
1953 | int cursig; | |
1954 | const void *greg; | |
1955 | ||
1956 | va_start (ap, note_type); | |
1957 | memset (data, 0, 112); | |
1958 | pid = va_arg (ap, long); | |
1959 | bfd_put_32 (abfd, pid, data + 32); | |
1960 | cursig = va_arg (ap, int); | |
1961 | bfd_put_16 (abfd, cursig, data + 12); | |
1962 | greg = va_arg (ap, const void *); | |
1963 | memcpy (data + 112, greg, 384); | |
1964 | memset (data + 496, 0, 8); | |
1965 | va_end (ap); | |
1966 | return elfcore_write_note (abfd, buf, bufsiz, | |
1967 | "CORE", note_type, data, sizeof (data)); | |
1968 | } | |
1969 | } | |
1970 | } | |
1971 | ||
5d35169e AM |
1972 | /* Add extra PPC sections. */ |
1973 | ||
2cdcc330 | 1974 | static const struct bfd_elf_special_section ppc64_elf_special_sections[] = |
7f4d3958 | 1975 | { |
07d6d2b8 AM |
1976 | { STRING_COMMA_LEN (".plt"), 0, SHT_NOBITS, 0 }, |
1977 | { STRING_COMMA_LEN (".sbss"), -2, SHT_NOBITS, SHF_ALLOC + SHF_WRITE }, | |
0112cd26 | 1978 | { STRING_COMMA_LEN (".sdata"), -2, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE }, |
07d6d2b8 AM |
1979 | { STRING_COMMA_LEN (".toc"), 0, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE }, |
1980 | { STRING_COMMA_LEN (".toc1"), 0, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE }, | |
0112cd26 | 1981 | { STRING_COMMA_LEN (".tocbss"), 0, SHT_NOBITS, SHF_ALLOC + SHF_WRITE }, |
07d6d2b8 | 1982 | { NULL, 0, 0, 0, 0 } |
5d35169e AM |
1983 | }; |
1984 | ||
7c8fe5c4 AM |
1985 | enum _ppc64_sec_type { |
1986 | sec_normal = 0, | |
1987 | sec_opd = 1, | |
46439c90 AM |
1988 | sec_toc = 2, |
1989 | sec_stub = 3 | |
7c8fe5c4 AM |
1990 | }; |
1991 | ||
f0abc2a1 AM |
1992 | struct _ppc64_elf_section_data |
1993 | { | |
1994 | struct bfd_elf_section_data elf; | |
411e1bfb | 1995 | |
f0abc2a1 AM |
1996 | union |
1997 | { | |
51aecdc5 AM |
1998 | /* An array with one entry for each opd function descriptor, |
1999 | and some spares since opd entries may be either 16 or 24 bytes. */ | |
2000 | #define OPD_NDX(OFF) ((OFF) >> 4) | |
74f0fb50 AM |
2001 | struct _opd_sec_data |
2002 | { | |
2003 | /* Points to the function code section for local opd entries. */ | |
2004 | asection **func_sec; | |
2005 | ||
2006 | /* After editing .opd, adjust references to opd local syms. */ | |
2007 | long *adjust; | |
6313825c AM |
2008 | |
2009 | union | |
2010 | { | |
2011 | /* A copy of relocs before they are modified for --emit-relocs. */ | |
2012 | Elf_Internal_Rela *relocs; | |
2013 | ||
2014 | /* Section contents. */ | |
2015 | bfd_byte *contents; | |
2016 | } u; | |
74f0fb50 | 2017 | } opd; |
7c8fe5c4 | 2018 | |
3a71aa26 AM |
2019 | /* An array for toc sections, indexed by offset/8. */ |
2020 | struct _toc_sec_data | |
2021 | { | |
2022 | /* Specifies the relocation symbol index used at a given toc offset. */ | |
2023 | unsigned *symndx; | |
2024 | ||
2025 | /* And the relocation addend. */ | |
2026 | bfd_vma *add; | |
2027 | } toc; | |
46439c90 AM |
2028 | |
2029 | /* Stub debugging. */ | |
2030 | struct ppc_stub_hash_entry *last_ent; | |
7c8fe5c4 AM |
2031 | } u; |
2032 | ||
2033 | enum _ppc64_sec_type sec_type:2; | |
411e1bfb | 2034 | |
7c8fe5c4 AM |
2035 | /* Flag set when small branches are detected. Used to |
2036 | select suitable defaults for the stub group size. */ | |
2037 | unsigned int has_14bit_branch:1; | |
3e04d765 AM |
2038 | |
2039 | /* Flag set when PLTCALL relocs are detected. */ | |
2040 | unsigned int has_pltcall:1; | |
066f4018 | 2041 | |
903b777d AM |
2042 | /* Flag set when section has PLT/GOT/TOC relocations that can be |
2043 | optimised. */ | |
2044 | unsigned int has_optrel:1; | |
f0abc2a1 AM |
2045 | }; |
2046 | ||
2047 | #define ppc64_elf_section_data(sec) \ | |
411e1bfb | 2048 | ((struct _ppc64_elf_section_data *) elf_section_data (sec)) |
f0abc2a1 | 2049 | |
0a1b45a2 | 2050 | static bool |
4ce794b7 | 2051 | ppc64_elf_new_section_hook (bfd *abfd, asection *sec) |
f0abc2a1 | 2052 | { |
f592407e AM |
2053 | if (!sec->used_by_bfd) |
2054 | { | |
2055 | struct _ppc64_elf_section_data *sdata; | |
986f0783 | 2056 | size_t amt = sizeof (*sdata); |
f0abc2a1 | 2057 | |
f592407e AM |
2058 | sdata = bfd_zalloc (abfd, amt); |
2059 | if (sdata == NULL) | |
0a1b45a2 | 2060 | return false; |
f592407e AM |
2061 | sec->used_by_bfd = sdata; |
2062 | } | |
f0abc2a1 AM |
2063 | |
2064 | return _bfd_elf_new_section_hook (abfd, sec); | |
2065 | } | |
4025353c | 2066 | |
0a1b45a2 | 2067 | static bool |
bf577467 AM |
2068 | ppc64_elf_section_flags (const Elf_Internal_Shdr *hdr) |
2069 | { | |
2070 | const char *name = hdr->bfd_section->name; | |
2071 | ||
3f3328b8 ML |
2072 | if (startswith (name, ".sbss") |
2073 | || startswith (name, ".sdata")) | |
bf577467 AM |
2074 | hdr->bfd_section->flags |= SEC_SMALL_DATA; |
2075 | ||
0a1b45a2 | 2076 | return true; |
bf577467 AM |
2077 | } |
2078 | ||
74f0fb50 | 2079 | static struct _opd_sec_data * |
4025353c AM |
2080 | get_opd_info (asection * sec) |
2081 | { | |
2082 | if (sec != NULL | |
2083 | && ppc64_elf_section_data (sec) != NULL | |
7c8fe5c4 | 2084 | && ppc64_elf_section_data (sec)->sec_type == sec_opd) |
74f0fb50 | 2085 | return &ppc64_elf_section_data (sec)->u.opd; |
4025353c AM |
2086 | return NULL; |
2087 | } | |
90e3cdf2 JJ |
2088 | \f |
2089 | /* Parameters for the qsort hook. */ | |
0a1b45a2 | 2090 | static bool synthetic_relocatable; |
8cb1c2c8 | 2091 | static const asection *synthetic_opd; |
90e3cdf2 | 2092 | |
699733f6 | 2093 | /* qsort comparison function for ppc64_elf_get_synthetic_symtab. */ |
90e3cdf2 JJ |
2094 | |
2095 | static int | |
2096 | compare_symbols (const void *ap, const void *bp) | |
2097 | { | |
2cdcc330 AM |
2098 | const asymbol *a = *(const asymbol **) ap; |
2099 | const asymbol *b = *(const asymbol **) bp; | |
90e3cdf2 | 2100 | |
699733f6 AM |
2101 | /* Section symbols first. */ |
2102 | if ((a->flags & BSF_SECTION_SYM) && !(b->flags & BSF_SECTION_SYM)) | |
90e3cdf2 | 2103 | return -1; |
699733f6 | 2104 | if (!(a->flags & BSF_SECTION_SYM) && (b->flags & BSF_SECTION_SYM)) |
90e3cdf2 JJ |
2105 | return 1; |
2106 | ||
699733f6 | 2107 | /* then .opd symbols. */ |
cd285db5 AM |
2108 | if (synthetic_opd != NULL) |
2109 | { | |
2110 | if (strcmp (a->section->name, ".opd") == 0 | |
2111 | && strcmp (b->section->name, ".opd") != 0) | |
2112 | return -1; | |
2113 | if (strcmp (a->section->name, ".opd") != 0 | |
2114 | && strcmp (b->section->name, ".opd") == 0) | |
2115 | return 1; | |
2116 | } | |
90e3cdf2 | 2117 | |
699733f6 | 2118 | /* then other code symbols. */ |
2cdcc330 AM |
2119 | if (((a->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL)) |
2120 | == (SEC_CODE | SEC_ALLOC)) | |
2121 | && ((b->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL)) | |
2122 | != (SEC_CODE | SEC_ALLOC))) | |
90e3cdf2 JJ |
2123 | return -1; |
2124 | ||
2cdcc330 AM |
2125 | if (((a->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL)) |
2126 | != (SEC_CODE | SEC_ALLOC)) | |
2127 | && ((b->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL)) | |
2128 | == (SEC_CODE | SEC_ALLOC))) | |
90e3cdf2 JJ |
2129 | return 1; |
2130 | ||
2131 | if (synthetic_relocatable) | |
2132 | { | |
2133 | if (a->section->id < b->section->id) | |
2134 | return -1; | |
2135 | ||
2136 | if (a->section->id > b->section->id) | |
2137 | return 1; | |
2138 | } | |
2139 | ||
2140 | if (a->value + a->section->vma < b->value + b->section->vma) | |
2141 | return -1; | |
2142 | ||
2143 | if (a->value + a->section->vma > b->value + b->section->vma) | |
2144 | return 1; | |
2145 | ||
4d35a0aa AM |
2146 | /* For syms with the same value, prefer strong dynamic global function |
2147 | syms over other syms. */ | |
2148 | if ((a->flags & BSF_GLOBAL) != 0 && (b->flags & BSF_GLOBAL) == 0) | |
2149 | return -1; | |
2150 | ||
2151 | if ((a->flags & BSF_GLOBAL) == 0 && (b->flags & BSF_GLOBAL) != 0) | |
2152 | return 1; | |
2153 | ||
2154 | if ((a->flags & BSF_FUNCTION) != 0 && (b->flags & BSF_FUNCTION) == 0) | |
2155 | return -1; | |
2156 | ||
2157 | if ((a->flags & BSF_FUNCTION) == 0 && (b->flags & BSF_FUNCTION) != 0) | |
2158 | return 1; | |
2159 | ||
2160 | if ((a->flags & BSF_WEAK) == 0 && (b->flags & BSF_WEAK) != 0) | |
2161 | return -1; | |
2162 | ||
2163 | if ((a->flags & BSF_WEAK) != 0 && (b->flags & BSF_WEAK) == 0) | |
2164 | return 1; | |
2165 | ||
2166 | if ((a->flags & BSF_DYNAMIC) != 0 && (b->flags & BSF_DYNAMIC) == 0) | |
2167 | return -1; | |
2168 | ||
2169 | if ((a->flags & BSF_DYNAMIC) == 0 && (b->flags & BSF_DYNAMIC) != 0) | |
2170 | return 1; | |
2171 | ||
dcea6a95 AM |
2172 | /* Finally, sort on where the symbol is in memory. The symbols will |
2173 | be in at most two malloc'd blocks, one for static syms, one for | |
2174 | dynamic syms, and we distinguish the two blocks above by testing | |
2175 | BSF_DYNAMIC. Since we are sorting the symbol pointers which were | |
2176 | originally in the same order as the symbols (and we're not | |
2177 | sorting the symbols themselves), this ensures a stable sort. */ | |
2178 | if (a < b) | |
2179 | return -1; | |
2180 | if (a > b) | |
2181 | return 1; | |
2182 | return 0; | |
90e3cdf2 JJ |
2183 | } |
2184 | ||
699733f6 | 2185 | /* Search SYMS for a symbol of the given VALUE. */ |
90e3cdf2 | 2186 | |
699733f6 | 2187 | static asymbol * |
9ad9b810 AM |
2188 | sym_exists_at (asymbol **syms, size_t lo, size_t hi, unsigned int id, |
2189 | bfd_vma value) | |
90e3cdf2 | 2190 | { |
9ad9b810 | 2191 | size_t mid; |
90e3cdf2 | 2192 | |
7292b3ac | 2193 | if (id == (unsigned) -1) |
699733f6 AM |
2194 | { |
2195 | while (lo < hi) | |
2196 | { | |
2197 | mid = (lo + hi) >> 1; | |
2198 | if (syms[mid]->value + syms[mid]->section->vma < value) | |
2199 | lo = mid + 1; | |
2200 | else if (syms[mid]->value + syms[mid]->section->vma > value) | |
2201 | hi = mid; | |
2202 | else | |
2203 | return syms[mid]; | |
2204 | } | |
2205 | } | |
2206 | else | |
2207 | { | |
2208 | while (lo < hi) | |
2209 | { | |
2210 | mid = (lo + hi) >> 1; | |
2211 | if (syms[mid]->section->id < id) | |
2212 | lo = mid + 1; | |
2213 | else if (syms[mid]->section->id > id) | |
2214 | hi = mid; | |
2215 | else if (syms[mid]->value < value) | |
2216 | lo = mid + 1; | |
2217 | else if (syms[mid]->value > value) | |
2218 | hi = mid; | |
2219 | else | |
2220 | return syms[mid]; | |
2221 | } | |
2222 | } | |
2223 | return NULL; | |
90e3cdf2 JJ |
2224 | } |
2225 | ||
0a1b45a2 | 2226 | static bool |
468392fb AM |
2227 | section_covers_vma (bfd *abfd ATTRIBUTE_UNUSED, asection *section, void *ptr) |
2228 | { | |
2229 | bfd_vma vma = *(bfd_vma *) ptr; | |
2230 | return ((section->flags & SEC_ALLOC) != 0 | |
2231 | && section->vma <= vma | |
2232 | && vma < section->vma + section->size); | |
2233 | } | |
2234 | ||
699733f6 | 2235 | /* Create synthetic symbols, effectively restoring "dot-symbol" function |
c4b0b099 AM |
2236 | entry syms. Also generate @plt symbols for the glink branch table. |
2237 | Returns count of synthetic symbols in RET or -1 on error. */ | |
90e3cdf2 JJ |
2238 | |
2239 | static long | |
a7535cf3 AM |
2240 | ppc64_elf_get_synthetic_symtab (bfd *abfd, |
2241 | long static_count, asymbol **static_syms, | |
2242 | long dyn_count, asymbol **dyn_syms, | |
c9727e01 | 2243 | asymbol **ret) |
90e3cdf2 JJ |
2244 | { |
2245 | asymbol *s; | |
0ccf57bd | 2246 | size_t i, j, count; |
90e3cdf2 | 2247 | char *names; |
0ccf57bd | 2248 | size_t symcount, codesecsym, codesecsymend, secsymend, opdsymend; |
ee67d69a | 2249 | asection *opd = NULL; |
0a1b45a2 | 2250 | bool relocatable = (abfd->flags & (EXEC_P | DYNAMIC)) == 0; |
a7535cf3 | 2251 | asymbol **syms; |
ee67d69a | 2252 | int abi = abiversion (abfd); |
90e3cdf2 JJ |
2253 | |
2254 | *ret = NULL; | |
2255 | ||
ee67d69a AM |
2256 | if (abi < 2) |
2257 | { | |
2258 | opd = bfd_get_section_by_name (abfd, ".opd"); | |
2259 | if (opd == NULL && abi == 1) | |
2260 | return 0; | |
2261 | } | |
90e3cdf2 | 2262 | |
a5259595 AM |
2263 | syms = NULL; |
2264 | codesecsym = 0; | |
2265 | codesecsymend = 0; | |
2266 | secsymend = 0; | |
2267 | opdsymend = 0; | |
2268 | symcount = 0; | |
2269 | if (opd != NULL) | |
c9727e01 | 2270 | { |
a5259595 AM |
2271 | symcount = static_count; |
2272 | if (!relocatable) | |
2273 | symcount += dyn_count; | |
2274 | if (symcount == 0) | |
2275 | return 0; | |
c9727e01 | 2276 | |
a5259595 AM |
2277 | syms = bfd_malloc ((symcount + 1) * sizeof (*syms)); |
2278 | if (syms == NULL) | |
2279 | return -1; | |
90e3cdf2 | 2280 | |
a5259595 AM |
2281 | if (!relocatable && static_count != 0 && dyn_count != 0) |
2282 | { | |
2283 | /* Use both symbol tables. */ | |
2284 | memcpy (syms, static_syms, static_count * sizeof (*syms)); | |
2285 | memcpy (syms + static_count, dyn_syms, | |
2286 | (dyn_count + 1) * sizeof (*syms)); | |
2287 | } | |
2288 | else if (!relocatable && static_count == 0) | |
2289 | memcpy (syms, dyn_syms, (symcount + 1) * sizeof (*syms)); | |
2290 | else | |
2291 | memcpy (syms, static_syms, (symcount + 1) * sizeof (*syms)); | |
90e3cdf2 | 2292 | |
0ccf57bd AM |
2293 | /* Trim uninteresting symbols. Interesting symbols are section, |
2294 | function, and notype symbols. */ | |
2295 | for (i = 0, j = 0; i < symcount; ++i) | |
2296 | if ((syms[i]->flags & (BSF_FILE | BSF_OBJECT | BSF_THREAD_LOCAL | |
2297 | | BSF_RELC | BSF_SRELC)) == 0) | |
2298 | syms[j++] = syms[i]; | |
2299 | symcount = j; | |
2300 | ||
a5259595 AM |
2301 | synthetic_relocatable = relocatable; |
2302 | synthetic_opd = opd; | |
2303 | qsort (syms, symcount, sizeof (*syms), compare_symbols); | |
90e3cdf2 | 2304 | |
a5259595 AM |
2305 | if (!relocatable && symcount > 1) |
2306 | { | |
bfa5bd2a PA |
2307 | /* Trim duplicate syms, since we may have merged the normal |
2308 | and dynamic symbols. Actually, we only care about syms | |
2309 | that have different values, so trim any with the same | |
2310 | value. Don't consider ifunc and ifunc resolver symbols | |
2311 | duplicates however, because GDB wants to know whether a | |
2312 | text symbol is an ifunc resolver. */ | |
a5259595 | 2313 | for (i = 1, j = 1; i < symcount; ++i) |
bfa5bd2a PA |
2314 | { |
2315 | const asymbol *s0 = syms[i - 1]; | |
2316 | const asymbol *s1 = syms[i]; | |
2317 | ||
2318 | if ((s0->value + s0->section->vma | |
2319 | != s1->value + s1->section->vma) | |
2320 | || ((s0->flags & BSF_GNU_INDIRECT_FUNCTION) | |
2321 | != (s1->flags & BSF_GNU_INDIRECT_FUNCTION))) | |
2322 | syms[j++] = syms[i]; | |
2323 | } | |
a5259595 AM |
2324 | symcount = j; |
2325 | } | |
699733f6 | 2326 | |
a5259595 AM |
2327 | i = 0; |
2328 | /* Note that here and in compare_symbols we can't compare opd and | |
2329 | sym->section directly. With separate debug info files, the | |
2330 | symbols will be extracted from the debug file while abfd passed | |
2331 | to this function is the real binary. */ | |
8bd10d6b AM |
2332 | if ((syms[i]->flags & BSF_SECTION_SYM) != 0 |
2333 | && strcmp (syms[i]->section->name, ".opd") == 0) | |
a5259595 AM |
2334 | ++i; |
2335 | codesecsym = i; | |
2336 | ||
2337 | for (; i < symcount; ++i) | |
2338 | if (((syms[i]->section->flags & (SEC_CODE | SEC_ALLOC | |
2339 | | SEC_THREAD_LOCAL)) | |
2340 | != (SEC_CODE | SEC_ALLOC)) | |
2341 | || (syms[i]->flags & BSF_SECTION_SYM) == 0) | |
2342 | break; | |
2343 | codesecsymend = i; | |
2344 | ||
2345 | for (; i < symcount; ++i) | |
2346 | if ((syms[i]->flags & BSF_SECTION_SYM) == 0) | |
2347 | break; | |
2348 | secsymend = i; | |
2349 | ||
2350 | for (; i < symcount; ++i) | |
2351 | if (strcmp (syms[i]->section->name, ".opd") != 0) | |
2352 | break; | |
2353 | opdsymend = i; | |
2354 | ||
2355 | for (; i < symcount; ++i) | |
2cdcc330 AM |
2356 | if (((syms[i]->section->flags |
2357 | & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL))) | |
a5259595 AM |
2358 | != (SEC_CODE | SEC_ALLOC)) |
2359 | break; | |
2360 | symcount = i; | |
2361 | } | |
c9727e01 | 2362 | count = 0; |
90e3cdf2 | 2363 | |
699733f6 | 2364 | if (relocatable) |
90e3cdf2 | 2365 | { |
0a1b45a2 | 2366 | bool (*slurp_relocs) (bfd *, asection *, asymbol **, bool); |
699733f6 AM |
2367 | arelent *r; |
2368 | size_t size; | |
0ccf57bd | 2369 | size_t relcount; |
90e3cdf2 | 2370 | |
468392fb AM |
2371 | if (opdsymend == secsymend) |
2372 | goto done; | |
2373 | ||
699733f6 | 2374 | slurp_relocs = get_elf_backend_data (abfd)->s->slurp_reloc_table; |
90e3cdf2 | 2375 | relcount = (opd->flags & SEC_RELOC) ? opd->reloc_count : 0; |
7356fed5 | 2376 | if (relcount == 0) |
c9727e01 | 2377 | goto done; |
90e3cdf2 | 2378 | |
0a1b45a2 | 2379 | if (!(*slurp_relocs) (abfd, opd, static_syms, false)) |
7356fed5 AM |
2380 | { |
2381 | count = -1; | |
2382 | goto done; | |
2383 | } | |
2384 | ||
699733f6 | 2385 | size = 0; |
595da8c5 | 2386 | for (i = secsymend, r = opd->relocation; i < opdsymend; ++i) |
699733f6 AM |
2387 | { |
2388 | asymbol *sym; | |
90e3cdf2 | 2389 | |
595da8c5 | 2390 | while (r < opd->relocation + relcount |
699733f6 AM |
2391 | && r->address < syms[i]->value + opd->vma) |
2392 | ++r; | |
90e3cdf2 | 2393 | |
595da8c5 | 2394 | if (r == opd->relocation + relcount) |
699733f6 | 2395 | break; |
90e3cdf2 | 2396 | |
699733f6 AM |
2397 | if (r->address != syms[i]->value + opd->vma) |
2398 | continue; | |
90e3cdf2 | 2399 | |
699733f6 AM |
2400 | if (r->howto->type != R_PPC64_ADDR64) |
2401 | continue; | |
90e3cdf2 | 2402 | |
699733f6 AM |
2403 | sym = *r->sym_ptr_ptr; |
2404 | if (!sym_exists_at (syms, opdsymend, symcount, | |
2405 | sym->section->id, sym->value + r->addend)) | |
2406 | { | |
2407 | ++count; | |
2408 | size += sizeof (asymbol); | |
2409 | size += strlen (syms[i]->name) + 2; | |
2410 | } | |
2411 | } | |
90e3cdf2 | 2412 | |
c4b0b099 AM |
2413 | if (size == 0) |
2414 | goto done; | |
699733f6 AM |
2415 | s = *ret = bfd_malloc (size); |
2416 | if (s == NULL) | |
2417 | { | |
7356fed5 | 2418 | count = -1; |
c9727e01 | 2419 | goto done; |
699733f6 | 2420 | } |
90e3cdf2 | 2421 | |
699733f6 | 2422 | names = (char *) (s + count); |
90e3cdf2 | 2423 | |
595da8c5 | 2424 | for (i = secsymend, r = opd->relocation; i < opdsymend; ++i) |
90e3cdf2 | 2425 | { |
699733f6 | 2426 | asymbol *sym; |
90e3cdf2 | 2427 | |
595da8c5 | 2428 | while (r < opd->relocation + relcount |
699733f6 AM |
2429 | && r->address < syms[i]->value + opd->vma) |
2430 | ++r; | |
90e3cdf2 | 2431 | |
595da8c5 | 2432 | if (r == opd->relocation + relcount) |
699733f6 AM |
2433 | break; |
2434 | ||
2435 | if (r->address != syms[i]->value + opd->vma) | |
2436 | continue; | |
2437 | ||
2438 | if (r->howto->type != R_PPC64_ADDR64) | |
2439 | continue; | |
90e3cdf2 | 2440 | |
699733f6 AM |
2441 | sym = *r->sym_ptr_ptr; |
2442 | if (!sym_exists_at (syms, opdsymend, symcount, | |
2443 | sym->section->id, sym->value + r->addend)) | |
2444 | { | |
2445 | size_t len; | |
2446 | ||
2447 | *s = *syms[i]; | |
6ba2a415 | 2448 | s->flags |= BSF_SYNTHETIC; |
699733f6 AM |
2449 | s->section = sym->section; |
2450 | s->value = sym->value + r->addend; | |
2451 | s->name = names; | |
2452 | *names++ = '.'; | |
2453 | len = strlen (syms[i]->name); | |
2454 | memcpy (names, syms[i]->name, len + 1); | |
2455 | names += len + 1; | |
6f610d07 UW |
2456 | /* Have udata.p point back to the original symbol this |
2457 | synthetic symbol was derived from. */ | |
2458 | s->udata.p = syms[i]; | |
699733f6 AM |
2459 | s++; |
2460 | } | |
2461 | } | |
2462 | } | |
2463 | else | |
90e3cdf2 | 2464 | { |
0a1b45a2 | 2465 | bool (*slurp_relocs) (bfd *, asection *, asymbol **, bool); |
ee67d69a | 2466 | bfd_byte *contents = NULL; |
699733f6 | 2467 | size_t size; |
0ccf57bd | 2468 | size_t plt_count = 0; |
468392fb AM |
2469 | bfd_vma glink_vma = 0, resolv_vma = 0; |
2470 | asection *dynamic, *glink = NULL, *relplt = NULL; | |
2471 | arelent *p; | |
90e3cdf2 | 2472 | |
81ff113f AM |
2473 | if (opd != NULL |
2474 | && ((opd->flags & SEC_HAS_CONTENTS) == 0 | |
2475 | || !bfd_malloc_and_get_section (abfd, opd, &contents))) | |
699733f6 | 2476 | { |
c4b0b099 AM |
2477 | free_contents_and_exit_err: |
2478 | count = -1; | |
ee67d69a | 2479 | free_contents_and_exit: |
c9594989 | 2480 | free (contents); |
c9727e01 | 2481 | goto done; |
699733f6 | 2482 | } |
90e3cdf2 | 2483 | |
699733f6 AM |
2484 | size = 0; |
2485 | for (i = secsymend; i < opdsymend; ++i) | |
2486 | { | |
2487 | bfd_vma ent; | |
90e3cdf2 | 2488 | |
5ef11c02 AM |
2489 | /* Ignore bogus symbols. */ |
2490 | if (syms[i]->value > opd->size - 8) | |
2491 | continue; | |
2492 | ||
699733f6 AM |
2493 | ent = bfd_get_64 (abfd, contents + syms[i]->value); |
2494 | if (!sym_exists_at (syms, opdsymend, symcount, -1, ent)) | |
2495 | { | |
2496 | ++count; | |
2497 | size += sizeof (asymbol); | |
2498 | size += strlen (syms[i]->name) + 2; | |
2499 | } | |
2500 | } | |
90e3cdf2 | 2501 | |
468392fb | 2502 | /* Get start of .glink stubs from DT_PPC64_GLINK. */ |
066ee829 AM |
2503 | if (dyn_count != 0 |
2504 | && (dynamic = bfd_get_section_by_name (abfd, ".dynamic")) != NULL) | |
468392fb AM |
2505 | { |
2506 | bfd_byte *dynbuf, *extdyn, *extdynend; | |
2507 | size_t extdynsize; | |
2508 | void (*swap_dyn_in) (bfd *, const void *, Elf_Internal_Dyn *); | |
2509 | ||
81ff113f AM |
2510 | if ((dynamic->flags & SEC_HAS_CONTENTS) == 0 |
2511 | || !bfd_malloc_and_get_section (abfd, dynamic, &dynbuf)) | |
c4b0b099 | 2512 | goto free_contents_and_exit_err; |
468392fb AM |
2513 | |
2514 | extdynsize = get_elf_backend_data (abfd)->s->sizeof_dyn; | |
2515 | swap_dyn_in = get_elf_backend_data (abfd)->s->swap_dyn_in; | |
2516 | ||
37c59664 AM |
2517 | for (extdyn = dynbuf, extdynend = dynbuf + dynamic->size; |
2518 | (size_t) (extdynend - extdyn) >= extdynsize; | |
2519 | extdyn += extdynsize) | |
468392fb AM |
2520 | { |
2521 | Elf_Internal_Dyn dyn; | |
2522 | (*swap_dyn_in) (abfd, extdyn, &dyn); | |
2523 | ||
2524 | if (dyn.d_tag == DT_NULL) | |
2525 | break; | |
2526 | ||
2527 | if (dyn.d_tag == DT_PPC64_GLINK) | |
2528 | { | |
9e390558 AM |
2529 | /* The first glink stub starts at DT_PPC64_GLINK plus 32. |
2530 | See comment in ppc64_elf_finish_dynamic_sections. */ | |
2531 | glink_vma = dyn.d_un.d_val + 8 * 4; | |
468392fb AM |
2532 | /* The .glink section usually does not survive the final |
2533 | link; search for the section (usually .text) where the | |
2534 | glink stubs now reside. */ | |
2535 | glink = bfd_sections_find_if (abfd, section_covers_vma, | |
2536 | &glink_vma); | |
2537 | break; | |
2538 | } | |
2539 | } | |
2540 | ||
2541 | free (dynbuf); | |
2542 | } | |
2543 | ||
2544 | if (glink != NULL) | |
2545 | { | |
2546 | /* Determine __glink trampoline by reading the relative branch | |
2547 | from the first glink stub. */ | |
2548 | bfd_byte buf[4]; | |
b9e5796b AM |
2549 | unsigned int off = 0; |
2550 | ||
2551 | while (bfd_get_section_contents (abfd, glink, buf, | |
2552 | glink_vma + off - glink->vma, 4)) | |
468392fb AM |
2553 | { |
2554 | unsigned int insn = bfd_get_32 (abfd, buf); | |
2555 | insn ^= B_DOT; | |
2556 | if ((insn & ~0x3fffffc) == 0) | |
b9e5796b | 2557 | { |
2cdcc330 AM |
2558 | resolv_vma |
2559 | = glink_vma + off + (insn ^ 0x2000000) - 0x2000000; | |
b9e5796b AM |
2560 | break; |
2561 | } | |
2562 | off += 4; | |
2563 | if (off > 4) | |
2564 | break; | |
468392fb AM |
2565 | } |
2566 | ||
2567 | if (resolv_vma) | |
2568 | size += sizeof (asymbol) + sizeof ("__glink_PLTresolve"); | |
468392fb | 2569 | |
066ee829 AM |
2570 | relplt = bfd_get_section_by_name (abfd, ".rela.plt"); |
2571 | if (relplt != NULL) | |
2572 | { | |
2573 | slurp_relocs = get_elf_backend_data (abfd)->s->slurp_reloc_table; | |
0a1b45a2 | 2574 | if (!(*slurp_relocs) (abfd, relplt, dyn_syms, true)) |
c4b0b099 | 2575 | goto free_contents_and_exit_err; |
68ffbac6 | 2576 | |
93c6e8c3 | 2577 | plt_count = NUM_SHDR_ENTRIES (&elf_section_data (relplt)->this_hdr); |
066ee829 | 2578 | size += plt_count * sizeof (asymbol); |
468392fb | 2579 | |
066ee829 AM |
2580 | p = relplt->relocation; |
2581 | for (i = 0; i < plt_count; i++, p++) | |
e054468f AM |
2582 | { |
2583 | size += strlen ((*p->sym_ptr_ptr)->name) + sizeof ("@plt"); | |
2584 | if (p->addend != 0) | |
2585 | size += sizeof ("+0x") - 1 + 16; | |
2586 | } | |
066ee829 | 2587 | } |
468392fb AM |
2588 | } |
2589 | ||
c4b0b099 AM |
2590 | if (size == 0) |
2591 | goto free_contents_and_exit; | |
699733f6 AM |
2592 | s = *ret = bfd_malloc (size); |
2593 | if (s == NULL) | |
c4b0b099 | 2594 | goto free_contents_and_exit_err; |
90e3cdf2 | 2595 | |
468392fb | 2596 | names = (char *) (s + count + plt_count + (resolv_vma != 0)); |
90e3cdf2 | 2597 | |
699733f6 | 2598 | for (i = secsymend; i < opdsymend; ++i) |
90e3cdf2 | 2599 | { |
699733f6 | 2600 | bfd_vma ent; |
90e3cdf2 | 2601 | |
5ef11c02 AM |
2602 | if (syms[i]->value > opd->size - 8) |
2603 | continue; | |
2604 | ||
699733f6 AM |
2605 | ent = bfd_get_64 (abfd, contents + syms[i]->value); |
2606 | if (!sym_exists_at (syms, opdsymend, symcount, -1, ent)) | |
90e3cdf2 | 2607 | { |
0ccf57bd | 2608 | size_t lo, hi; |
699733f6 | 2609 | size_t len; |
c9727e01 | 2610 | asection *sec = abfd->sections; |
90e3cdf2 | 2611 | |
699733f6 AM |
2612 | *s = *syms[i]; |
2613 | lo = codesecsym; | |
2614 | hi = codesecsymend; | |
2615 | while (lo < hi) | |
2616 | { | |
0ccf57bd | 2617 | size_t mid = (lo + hi) >> 1; |
699733f6 AM |
2618 | if (syms[mid]->section->vma < ent) |
2619 | lo = mid + 1; | |
2620 | else if (syms[mid]->section->vma > ent) | |
2621 | hi = mid; | |
2622 | else | |
c9727e01 AM |
2623 | { |
2624 | sec = syms[mid]->section; | |
2625 | break; | |
2626 | } | |
699733f6 AM |
2627 | } |
2628 | ||
c9727e01 | 2629 | if (lo >= hi && lo > codesecsym) |
699733f6 | 2630 | sec = syms[lo - 1]->section; |
699733f6 AM |
2631 | |
2632 | for (; sec != NULL; sec = sec->next) | |
2633 | { | |
2634 | if (sec->vma > ent) | |
2635 | break; | |
63524580 JK |
2636 | /* SEC_LOAD may not be set if SEC is from a separate debug |
2637 | info file. */ | |
2638 | if ((sec->flags & SEC_ALLOC) == 0) | |
699733f6 AM |
2639 | break; |
2640 | if ((sec->flags & SEC_CODE) != 0) | |
2641 | s->section = sec; | |
2642 | } | |
6ba2a415 | 2643 | s->flags |= BSF_SYNTHETIC; |
699733f6 AM |
2644 | s->value = ent - s->section->vma; |
2645 | s->name = names; | |
2646 | *names++ = '.'; | |
2647 | len = strlen (syms[i]->name); | |
2648 | memcpy (names, syms[i]->name, len + 1); | |
2649 | names += len + 1; | |
6f610d07 UW |
2650 | /* Have udata.p point back to the original symbol this |
2651 | synthetic symbol was derived from. */ | |
2652 | s->udata.p = syms[i]; | |
699733f6 | 2653 | s++; |
90e3cdf2 | 2654 | } |
90e3cdf2 | 2655 | } |
699733f6 | 2656 | free (contents); |
468392fb AM |
2657 | |
2658 | if (glink != NULL && relplt != NULL) | |
2659 | { | |
2660 | if (resolv_vma) | |
2661 | { | |
2662 | /* Add a symbol for the main glink trampoline. */ | |
86a4952b | 2663 | memset (s, 0, sizeof *s); |
468392fb | 2664 | s->the_bfd = abfd; |
6ba2a415 | 2665 | s->flags = BSF_GLOBAL | BSF_SYNTHETIC; |
468392fb AM |
2666 | s->section = glink; |
2667 | s->value = resolv_vma - glink->vma; | |
2668 | s->name = names; | |
2cdcc330 AM |
2669 | memcpy (names, "__glink_PLTresolve", |
2670 | sizeof ("__glink_PLTresolve")); | |
468392fb AM |
2671 | names += sizeof ("__glink_PLTresolve"); |
2672 | s++; | |
2673 | count++; | |
2674 | } | |
2675 | ||
2676 | /* FIXME: It would be very much nicer to put sym@plt on the | |
2677 | stub rather than on the glink branch table entry. The | |
2678 | objdump disassembler would then use a sensible symbol | |
2679 | name on plt calls. The difficulty in doing so is | |
2680 | a) finding the stubs, and, | |
2681 | b) matching stubs against plt entries, and, | |
2682 | c) there can be multiple stubs for a given plt entry. | |
2683 | ||
2684 | Solving (a) could be done by code scanning, but older | |
2685 | ppc64 binaries used different stubs to current code. | |
2686 | (b) is the tricky one since you need to known the toc | |
2687 | pointer for at least one function that uses a pic stub to | |
2688 | be able to calculate the plt address referenced. | |
2689 | (c) means gdb would need to set multiple breakpoints (or | |
2690 | find the glink branch itself) when setting breakpoints | |
2691 | for pending shared library loads. */ | |
2692 | p = relplt->relocation; | |
2693 | for (i = 0; i < plt_count; i++, p++) | |
2694 | { | |
2695 | size_t len; | |
2696 | ||
2697 | *s = **p->sym_ptr_ptr; | |
2698 | /* Undefined syms won't have BSF_LOCAL or BSF_GLOBAL set. Since | |
2699 | we are defining a symbol, ensure one of them is set. */ | |
2700 | if ((s->flags & BSF_LOCAL) == 0) | |
2701 | s->flags |= BSF_GLOBAL; | |
6ba2a415 | 2702 | s->flags |= BSF_SYNTHETIC; |
468392fb AM |
2703 | s->section = glink; |
2704 | s->value = glink_vma - glink->vma; | |
2705 | s->name = names; | |
2706 | s->udata.p = NULL; | |
2707 | len = strlen ((*p->sym_ptr_ptr)->name); | |
2708 | memcpy (names, (*p->sym_ptr_ptr)->name, len); | |
2709 | names += len; | |
e054468f AM |
2710 | if (p->addend != 0) |
2711 | { | |
2712 | memcpy (names, "+0x", sizeof ("+0x") - 1); | |
2713 | names += sizeof ("+0x") - 1; | |
2714 | bfd_sprintf_vma (abfd, names, p->addend); | |
2715 | names += strlen (names); | |
2716 | } | |
468392fb AM |
2717 | memcpy (names, "@plt", sizeof ("@plt")); |
2718 | names += sizeof ("@plt"); | |
2719 | s++; | |
b9e5796b AM |
2720 | if (abi < 2) |
2721 | { | |
2722 | glink_vma += 8; | |
2723 | if (i >= 0x8000) | |
2724 | glink_vma += 4; | |
2725 | } | |
2726 | else | |
468392fb AM |
2727 | glink_vma += 4; |
2728 | } | |
2729 | count += plt_count; | |
2730 | } | |
90e3cdf2 JJ |
2731 | } |
2732 | ||
c9727e01 | 2733 | done: |
a7535cf3 | 2734 | free (syms); |
90e3cdf2 JJ |
2735 | return count; |
2736 | } | |
5bd4f169 | 2737 | \f |
65f38f15 AM |
2738 | /* The following functions are specific to the ELF linker, while |
2739 | functions above are used generally. Those named ppc64_elf_* are | |
2740 | called by the main ELF linker code. They appear in this file more | |
2741 | or less in the order in which they are called. eg. | |
2742 | ppc64_elf_check_relocs is called early in the link process, | |
2743 | ppc64_elf_finish_dynamic_sections is one of the last functions | |
e86ce104 AM |
2744 | called. |
2745 | ||
2746 | PowerPC64-ELF uses a similar scheme to PowerPC64-XCOFF in that | |
2747 | functions have both a function code symbol and a function descriptor | |
2748 | symbol. A call to foo in a relocatable object file looks like: | |
2749 | ||
2750 | . .text | |
2751 | . x: | |
2752 | . bl .foo | |
2753 | . nop | |
2754 | ||
2755 | The function definition in another object file might be: | |
2756 | ||
2757 | . .section .opd | |
2758 | . foo: .quad .foo | |
2759 | . .quad .TOC.@tocbase | |
2760 | . .quad 0 | |
2761 | . | |
2762 | . .text | |
2763 | . .foo: blr | |
2764 | ||
2765 | When the linker resolves the call during a static link, the branch | |
2766 | unsurprisingly just goes to .foo and the .opd information is unused. | |
2767 | If the function definition is in a shared library, things are a little | |
2768 | different: The call goes via a plt call stub, the opd information gets | |
2769 | copied to the plt, and the linker patches the nop. | |
2770 | ||
2771 | . x: | |
2772 | . bl .foo_stub | |
2773 | . ld 2,40(1) | |
2774 | . | |
2775 | . | |
2776 | . .foo_stub: | |
71a39c98 AM |
2777 | . std 2,40(1) # in practice, the call stub |
2778 | . addis 11,2,Lfoo@toc@ha # is slightly optimized, but | |
2779 | . addi 11,11,Lfoo@toc@l # this is the general idea | |
2780 | . ld 12,0(11) | |
2781 | . ld 2,8(11) | |
2782 | . mtctr 12 | |
2783 | . ld 11,16(11) | |
e86ce104 AM |
2784 | . bctr |
2785 | . | |
2786 | . .section .plt | |
2787 | . Lfoo: reloc (R_PPC64_JMP_SLOT, foo) | |
2788 | ||
2789 | The "reloc ()" notation is supposed to indicate that the linker emits | |
2790 | an R_PPC64_JMP_SLOT reloc against foo. The dynamic linker does the opd | |
2791 | copying. | |
2792 | ||
2793 | What are the difficulties here? Well, firstly, the relocations | |
2794 | examined by the linker in check_relocs are against the function code | |
2795 | sym .foo, while the dynamic relocation in the plt is emitted against | |
2796 | the function descriptor symbol, foo. Somewhere along the line, we need | |
2797 | to carefully copy dynamic link information from one symbol to the other. | |
2798 | Secondly, the generic part of the elf linker will make .foo a dynamic | |
2799 | symbol as is normal for most other backends. We need foo dynamic | |
2800 | instead, at least for an application final link. However, when | |
2801 | creating a shared library containing foo, we need to have both symbols | |
2802 | dynamic so that references to .foo are satisfied during the early | |
2803 | stages of linking. Otherwise the linker might decide to pull in a | |
8387904d AM |
2804 | definition from some other object, eg. a static library. |
2805 | ||
2806 | Update: As of August 2004, we support a new convention. Function | |
2807 | calls may use the function descriptor symbol, ie. "bl foo". This | |
2808 | behaves exactly as "bl .foo". */ | |
65f38f15 | 2809 | |
7c8bbca5 AM |
2810 | /* Of those relocs that might be copied as dynamic relocs, this |
2811 | function selects those that must be copied when linking a shared | |
2812 | library or PIE, even when the symbol is local. */ | |
65f38f15 | 2813 | |
1d483afe AM |
2814 | static int |
2815 | must_be_dyn_reloc (struct bfd_link_info *info, | |
2816 | enum elf_ppc64_reloc_type r_type) | |
2817 | { | |
2818 | switch (r_type) | |
2819 | { | |
2820 | default: | |
7c8bbca5 AM |
2821 | /* Only relative relocs can be resolved when the object load |
2822 | address isn't fixed. DTPREL64 is excluded because the | |
2823 | dynamic linker needs to differentiate global dynamic from | |
2824 | local dynamic __tls_index pairs when PPC64_OPT_TLS is set. */ | |
1d483afe AM |
2825 | return 1; |
2826 | ||
2827 | case R_PPC64_REL32: | |
2828 | case R_PPC64_REL64: | |
2829 | case R_PPC64_REL30: | |
1bdd8fac AM |
2830 | case R_PPC64_TOC16: |
2831 | case R_PPC64_TOC16_DS: | |
2832 | case R_PPC64_TOC16_LO: | |
2833 | case R_PPC64_TOC16_HI: | |
2834 | case R_PPC64_TOC16_HA: | |
2835 | case R_PPC64_TOC16_LO_DS: | |
1d483afe AM |
2836 | return 0; |
2837 | ||
2838 | case R_PPC64_TPREL16: | |
2839 | case R_PPC64_TPREL16_LO: | |
2840 | case R_PPC64_TPREL16_HI: | |
2841 | case R_PPC64_TPREL16_HA: | |
2842 | case R_PPC64_TPREL16_DS: | |
2843 | case R_PPC64_TPREL16_LO_DS: | |
f9c6b907 AM |
2844 | case R_PPC64_TPREL16_HIGH: |
2845 | case R_PPC64_TPREL16_HIGHA: | |
1d483afe AM |
2846 | case R_PPC64_TPREL16_HIGHER: |
2847 | case R_PPC64_TPREL16_HIGHERA: | |
2848 | case R_PPC64_TPREL16_HIGHEST: | |
2849 | case R_PPC64_TPREL16_HIGHESTA: | |
2850 | case R_PPC64_TPREL64: | |
c213164a | 2851 | case R_PPC64_TPREL34: |
7c8bbca5 AM |
2852 | /* These relocations are relative but in a shared library the |
2853 | linker doesn't know the thread pointer base. */ | |
2854 | return bfd_link_dll (info); | |
1d483afe AM |
2855 | } |
2856 | } | |
65f38f15 | 2857 | |
f4656909 | 2858 | /* If ELIMINATE_COPY_RELOCS is non-zero, the linker will try to avoid |
e1c6cf61 | 2859 | copying dynamic variables from a shared lib into an app's .dynbss |
f4656909 | 2860 | section, and instead use a dynamic relocation to point into the |
e1c6cf61 AM |
2861 | shared lib. With code that gcc generates it is vital that this be |
2862 | enabled; In the PowerPC64 ELFv1 ABI the address of a function is | |
2863 | actually the address of a function descriptor which resides in the | |
2864 | .opd section. gcc uses the descriptor directly rather than going | |
2865 | via the GOT as some other ABIs do, which means that initialized | |
2866 | function pointers reference the descriptor. Thus, a function | |
2867 | pointer initialized to the address of a function in a shared | |
2868 | library will either require a .dynbss copy and a copy reloc, or a | |
2869 | dynamic reloc. Using a .dynbss copy redefines the function | |
2870 | descriptor symbol to point to the copy. This presents a problem as | |
2871 | a PLT entry for that function is also initialized from the function | |
2872 | descriptor symbol and the copy may not be initialized first. */ | |
a23b6845 | 2873 | #define ELIMINATE_COPY_RELOCS 1 |
f4656909 | 2874 | |
721956f4 | 2875 | /* Section name for stubs is the associated section name plus this |
29942be8 NC |
2876 | string. */ |
2877 | #define STUB_SUFFIX ".stub" | |
721956f4 AM |
2878 | |
2879 | /* Linker stubs. | |
2880 | ppc_stub_long_branch: | |
2881 | Used when a 14 bit branch (or even a 24 bit branch) can't reach its | |
2882 | destination, but a 24 bit branch in a stub section will reach. | |
2883 | . b dest | |
2884 | ||
2885 | ppc_stub_plt_branch: | |
2886 | Similar to the above, but a 24 bit branch in the stub section won't | |
2887 | reach its destination. | |
6df4c9c2 AM |
2888 | . addis %r12,%r2,xxx@toc@ha |
2889 | . ld %r12,xxx@toc@l(%r12) | |
71a39c98 | 2890 | . mtctr %r12 |
721956f4 AM |
2891 | . bctr |
2892 | ||
2893 | ppc_stub_plt_call: | |
2c66dc6c AM |
2894 | Used to call a function in a shared library. If it so happens that |
2895 | the plt entry referenced crosses a 64k boundary, then an extra | |
71a39c98 | 2896 | "addi %r11,%r11,xxx@toc@l" will be inserted before the "mtctr". |
7aba54da | 2897 | An r2save variant starts with "std %r2,40(%r1)". |
71a39c98 AM |
2898 | . addis %r11,%r2,xxx@toc@ha |
2899 | . ld %r12,xxx+0@toc@l(%r11) | |
2900 | . mtctr %r12 | |
2901 | . ld %r2,xxx+8@toc@l(%r11) | |
2902 | . ld %r11,xxx+16@toc@l(%r11) | |
721956f4 | 2903 | . bctr |
ad8e1ba5 AM |
2904 | |
2905 | ppc_stub_long_branch and ppc_stub_plt_branch may also have additional | |
2906 | code to adjust the value and save r2 to support multiple toc sections. | |
2907 | A ppc_stub_long_branch with an r2 offset looks like: | |
2908 | . std %r2,40(%r1) | |
2909 | . addis %r2,%r2,off@ha | |
2910 | . addi %r2,%r2,off@l | |
2911 | . b dest | |
2912 | ||
2913 | A ppc_stub_plt_branch with an r2 offset looks like: | |
2914 | . std %r2,40(%r1) | |
6df4c9c2 AM |
2915 | . addis %r12,%r2,xxx@toc@ha |
2916 | . ld %r12,xxx@toc@l(%r12) | |
ad8e1ba5 AM |
2917 | . addis %r2,%r2,off@ha |
2918 | . addi %r2,%r2,off@l | |
71a39c98 | 2919 | . mtctr %r12 |
ad8e1ba5 | 2920 | . bctr |
ac2df442 | 2921 | |
05d0e962 AM |
2922 | All of the above stubs are shown as their ELFv1 variants. ELFv2 |
2923 | variants exist too, simpler for plt calls since a new toc pointer | |
2924 | and static chain are not loaded by the stub. In addition, ELFv2 | |
2925 | has some more complex stubs to handle calls marked with NOTOC | |
7aba54da AM |
2926 | relocs from functions where r2 is not a valid toc pointer. |
2927 | ppc_stub_long_branch_p9notoc: | |
05d0e962 AM |
2928 | . mflr %r12 |
2929 | . bcl 20,31,1f | |
2930 | . 1: | |
2931 | . mflr %r11 | |
2932 | . mtlr %r12 | |
2cdcc330 AM |
2933 | . addis %r12,%r11,dest-1b@ha |
2934 | . addi %r12,%r12,dest-1b@l | |
05d0e962 AM |
2935 | . b dest |
2936 | ||
7aba54da | 2937 | ppc_stub_plt_branch_p9notoc: |
05d0e962 AM |
2938 | . mflr %r12 |
2939 | . bcl 20,31,1f | |
2940 | . 1: | |
2941 | . mflr %r11 | |
2942 | . mtlr %r12 | |
2943 | . lis %r12,xxx-1b@highest | |
f891966f | 2944 | . ori %r12,%r12,xxx-1b@higher |
05d0e962 | 2945 | . sldi %r12,%r12,32 |
f891966f | 2946 | . oris %r12,%r12,xxx-1b@high |
05d0e962 AM |
2947 | . ori %r12,%r12,xxx-1b@l |
2948 | . add %r12,%r11,%r12 | |
2949 | . mtctr %r12 | |
2950 | . bctr | |
2951 | ||
7aba54da | 2952 | ppc_stub_plt_call_p9notoc: |
05d0e962 AM |
2953 | . mflr %r12 |
2954 | . bcl 20,31,1f | |
2955 | . 1: | |
2956 | . mflr %r11 | |
2957 | . mtlr %r12 | |
2958 | . lis %r12,xxx-1b@highest | |
f891966f | 2959 | . ori %r12,%r12,xxx-1b@higher |
05d0e962 | 2960 | . sldi %r12,%r12,32 |
f891966f | 2961 | . oris %r12,%r12,xxx-1b@high |
05d0e962 AM |
2962 | . ori %r12,%r12,xxx-1b@l |
2963 | . ldx %r12,%r11,%r12 | |
2964 | . mtctr %r12 | |
2965 | . bctr | |
2966 | ||
7c1f4227 | 2967 | There are also ELFv1 power10 variants of these stubs. |
04bdff6a | 2968 | ppc_stub_long_branch_notoc: |
d4b87b1e | 2969 | . pla %r12,dest@pcrel |
04bdff6a AM |
2970 | . b dest |
2971 | ppc_stub_plt_branch_notoc: | |
2972 | . lis %r11,(dest-1f)@highesta34 | |
2973 | . ori %r11,%r11,(dest-1f)@highera34 | |
2974 | . sldi %r11,%r11,34 | |
d4b87b1e | 2975 | . 1: pla %r12,dest@pcrel |
04bdff6a AM |
2976 | . add %r12,%r11,%r12 |
2977 | . mtctr %r12 | |
2978 | . bctr | |
2979 | ppc_stub_plt_call_notoc: | |
2980 | . lis %r11,(xxx-1f)@highesta34 | |
2981 | . ori %r11,%r11,(xxx-1f)@highera34 | |
2982 | . sldi %r11,%r11,34 | |
d4b87b1e | 2983 | . 1: pla %r12,xxx@pcrel |
04bdff6a AM |
2984 | . ldx %r12,%r11,%r12 |
2985 | . mtctr %r12 | |
2986 | . bctr | |
2987 | ||
05d0e962 AM |
2988 | In cases where the high instructions would add zero, they are |
2989 | omitted and following instructions modified in some cases. | |
7c1f4227 | 2990 | For example, a power10 ppc_stub_plt_call_notoc might simplify down |
04bdff6a AM |
2991 | to |
2992 | . pld %r12,xxx@pcrel | |
2993 | . mtctr %r12 | |
2994 | . bctr | |
05d0e962 | 2995 | |
7aba54da | 2996 | Stub variants may be merged. For example, if printf is called from |
05d0e962 AM |
2997 | code with the tocsave optimization (ie. r2 saved in function |
2998 | prologue) and therefore calls use a ppc_stub_plt_call linkage stub, | |
2999 | and from other code without the tocsave optimization requiring a | |
3000 | ppc_stub_plt_call_r2save linkage stub, a single stub of the latter | |
3001 | type will be created. Calls with the tocsave optimization will | |
3002 | enter this stub after the instruction saving r2. A similar | |
3003 | situation exists when calls are marked with R_PPC64_REL24_NOTOC | |
3004 | relocations. These require a ppc_stub_plt_call_notoc linkage stub | |
3005 | to call an external function like printf. If other calls to printf | |
3006 | require a ppc_stub_plt_call linkage stub then a single | |
7aba54da AM |
3007 | ppc_stub_plt_call_notoc linkage stub may be used for both types of |
3008 | call. */ | |
3009 | ||
3010 | enum ppc_stub_main_type | |
2cdcc330 | 3011 | { |
721956f4 AM |
3012 | ppc_stub_none, |
3013 | ppc_stub_long_branch, | |
3014 | ppc_stub_plt_branch, | |
794e51c0 | 3015 | ppc_stub_plt_call, |
a4b6fadd AM |
3016 | ppc_stub_global_entry, |
3017 | ppc_stub_save_res | |
721956f4 AM |
3018 | }; |
3019 | ||
7aba54da AM |
3020 | /* ppc_stub_long_branch, ppc_stub_plt_branch and ppc_stub_plt_call have |
3021 | these variations. */ | |
3022 | ||
3023 | enum ppc_stub_sub_type | |
3024 | { | |
3025 | ppc_stub_toc, | |
3026 | ppc_stub_notoc, | |
3027 | ppc_stub_p9notoc | |
3028 | }; | |
3029 | ||
3030 | struct ppc_stub_type | |
3031 | { | |
3032 | ENUM_BITFIELD (ppc_stub_main_type) main : 3; | |
3033 | ENUM_BITFIELD (ppc_stub_sub_type) sub : 2; | |
3034 | unsigned int r2save : 1; | |
3035 | }; | |
3036 | ||
6f20ed8a AM |
3037 | /* Information on stub grouping. */ |
3038 | struct map_stub | |
3039 | { | |
3040 | /* The stub section. */ | |
3041 | asection *stub_sec; | |
3042 | /* This is the section to which stubs in the group will be attached. */ | |
3043 | asection *link_sec; | |
a4b6fadd AM |
3044 | /* Next group. */ |
3045 | struct map_stub *next; | |
3046 | /* Whether to emit a copy of register save/restore functions in this | |
3047 | group. */ | |
3048 | int needs_save_res; | |
df136d64 AM |
3049 | /* Current offset within stubs after the insn restoring lr in a |
3050 | _notoc or _both stub using bcl for pc-relative addressing, or | |
3051 | after the insn restoring lr in a __tls_get_addr_opt plt stub. */ | |
3052 | unsigned int lr_restore; | |
3053 | /* Accumulated size of EH info emitted to describe return address | |
3054 | if stubs modify lr. Does not include 17 byte FDE header. */ | |
3055 | unsigned int eh_size; | |
3056 | /* Offset in glink_eh_frame to the start of EH info for this group. */ | |
3057 | unsigned int eh_base; | |
6f20ed8a AM |
3058 | }; |
3059 | ||
2cdcc330 AM |
3060 | struct ppc_stub_hash_entry |
3061 | { | |
721956f4 AM |
3062 | /* Base hash table entry structure. */ |
3063 | struct bfd_hash_entry root; | |
3064 | ||
7aba54da | 3065 | struct ppc_stub_type type; |
ad8e1ba5 | 3066 | |
6f20ed8a AM |
3067 | /* Group information. */ |
3068 | struct map_stub *group; | |
721956f4 AM |
3069 | |
3070 | /* Offset within stub_sec of the beginning of this stub. */ | |
3071 | bfd_vma stub_offset; | |
3072 | ||
3073 | /* Given the symbol's value and its section we can determine its final | |
3074 | value when building the stubs (so the stub knows where to jump. */ | |
3075 | bfd_vma target_value; | |
3076 | asection *target_section; | |
3077 | ||
721956f4 AM |
3078 | /* The symbol table entry, if any, that this was derived from. */ |
3079 | struct ppc_link_hash_entry *h; | |
e054468f | 3080 | struct plt_entry *plt_ent; |
721956f4 | 3081 | |
2d7ad24e AM |
3082 | /* Symbol type. */ |
3083 | unsigned char symtype; | |
3084 | ||
6911b7dc AM |
3085 | /* Symbol st_other. */ |
3086 | unsigned char other; | |
ecc741e6 AM |
3087 | |
3088 | /* Debug: Track hash table traversal. */ | |
3089 | unsigned int id; | |
721956f4 AM |
3090 | }; |
3091 | ||
2cdcc330 AM |
3092 | struct ppc_branch_hash_entry |
3093 | { | |
721956f4 AM |
3094 | /* Base hash table entry structure. */ |
3095 | struct bfd_hash_entry root; | |
3096 | ||
c456f082 | 3097 | /* Offset within branch lookup table. */ |
721956f4 AM |
3098 | unsigned int offset; |
3099 | ||
3100 | /* Generation marker. */ | |
3101 | unsigned int iter; | |
3102 | }; | |
65f38f15 | 3103 | |
1657026c | 3104 | /* Used to track dynamic relocations. */ |
19e08130 AM |
3105 | struct ppc_dyn_relocs |
3106 | { | |
3107 | struct ppc_dyn_relocs *next; | |
3108 | ||
3109 | /* The input section of the reloc. */ | |
3110 | asection *sec; | |
3111 | ||
3112 | /* Total number of relocs copied for the input section. */ | |
1657026c AM |
3113 | unsigned int count; |
3114 | ||
3115 | /* Number of pc-relative relocs copied for the input section. */ | |
3116 | unsigned int pc_count; | |
3117 | ||
3118 | /* Number of relocs that might become R_PPC64_RELATIVE. */ | |
3119 | unsigned int rel_count; | |
3120 | }; | |
3121 | ||
3122 | struct ppc_local_dyn_relocs | |
3123 | { | |
3124 | struct ppc_local_dyn_relocs *next; | |
3125 | ||
3126 | /* The input section of the reloc. */ | |
3127 | asection *sec; | |
3128 | ||
3129 | /* Total number of relocs copied for the input section. */ | |
3130 | unsigned int count; | |
3131 | ||
3132 | /* Number of relocs that might become R_PPC64_RELATIVE. */ | |
3133 | unsigned int rel_count : 31; | |
19e08130 AM |
3134 | |
3135 | /* Whether this entry is for STT_GNU_IFUNC symbols. */ | |
3136 | unsigned int ifunc : 1; | |
3137 | }; | |
3138 | ||
65f38f15 AM |
3139 | struct ppc_link_hash_entry |
3140 | { | |
3141 | struct elf_link_hash_entry elf; | |
3142 | ||
2cdcc330 AM |
3143 | union |
3144 | { | |
b3fac117 AM |
3145 | /* A pointer to the most recently used stub hash entry against this |
3146 | symbol. */ | |
3147 | struct ppc_stub_hash_entry *stub_cache; | |
3148 | ||
3149 | /* A pointer to the next symbol starting with a '.' */ | |
3150 | struct ppc_link_hash_entry *next_dot_sym; | |
3151 | } u; | |
721956f4 | 3152 | |
721956f4 | 3153 | /* Link between function code and descriptor symbols. */ |
34814b9f | 3154 | struct ppc_link_hash_entry *oh; |
721956f4 | 3155 | |
e86ce104 AM |
3156 | /* Flag function code and descriptor symbols. */ |
3157 | unsigned int is_func:1; | |
3158 | unsigned int is_func_descriptor:1; | |
908b32fc | 3159 | unsigned int fake:1; |
411e1bfb | 3160 | |
c5614fa4 AM |
3161 | /* Whether global opd/toc sym has been adjusted or not. |
3162 | After ppc64_elf_edit_opd/ppc64_elf_edit_toc has run, this flag | |
3163 | should be set for all globals defined in any opd/toc section. */ | |
754021d0 AM |
3164 | unsigned int adjust_done:1; |
3165 | ||
a4b6fadd AM |
3166 | /* Set if this is an out-of-line register save/restore function, |
3167 | with non-standard calling convention. */ | |
3168 | unsigned int save_res:1; | |
3169 | ||
8b5f1ed8 AM |
3170 | /* Set if a duplicate symbol with non-zero localentry is detected, |
3171 | even when the duplicate symbol does not provide a definition. */ | |
3172 | unsigned int non_zero_localentry:1; | |
3173 | ||
411e1bfb | 3174 | /* Contexts in which symbol is used in the GOT (or TOC). |
37da22e5 AM |
3175 | Bits are or'd into the mask as the corresponding relocs are |
3176 | encountered during check_relocs, with TLS_TLS being set when any | |
3177 | of the other TLS bits are set. tls_optimize clears bits when | |
3178 | optimizing to indicate the corresponding GOT entry type is not | |
3179 | needed. If set, TLS_TLS is never cleared. tls_optimize may also | |
b00a0a86 | 3180 | set TLS_GDIE when a GD reloc turns into an IE one. |
37da22e5 AM |
3181 | These flags are also kept for local symbols. */ |
3182 | #define TLS_TLS 1 /* Any TLS reloc. */ | |
3183 | #define TLS_GD 2 /* GD reloc. */ | |
3184 | #define TLS_LD 4 /* LD reloc. */ | |
3185 | #define TLS_TPREL 8 /* TPREL reloc, => IE. */ | |
3186 | #define TLS_DTPREL 16 /* DTPREL reloc, => LD. */ | |
3187 | #define TLS_MARK 32 /* __tls_get_addr call marked. */ | |
b00a0a86 | 3188 | #define TLS_GDIE 64 /* GOT TPREL reloc resulting from GD->IE. */ |
46e9995a | 3189 | #define TLS_EXPLICIT 256 /* TOC section TLS reloc, not stored. */ |
f961d9dd | 3190 | unsigned char tls_mask; |
37da22e5 AM |
3191 | |
3192 | /* The above field is also used to mark function symbols. In which | |
3193 | case TLS_TLS will be 0. */ | |
3194 | #define PLT_IFUNC 2 /* STT_GNU_IFUNC. */ | |
2d7ad24e | 3195 | #define PLT_KEEP 4 /* inline plt call requires plt entry. */ |
37da22e5 | 3196 | #define NON_GOT 256 /* local symbol plt, not stored. */ |
65f38f15 AM |
3197 | }; |
3198 | ||
ed7007c1 AM |
3199 | static inline struct ppc_link_hash_entry * |
3200 | ppc_elf_hash_entry (struct elf_link_hash_entry *ent) | |
3201 | { | |
3202 | return (struct ppc_link_hash_entry *) ent; | |
3203 | } | |
3204 | ||
30845f11 AM |
3205 | static inline struct elf_link_hash_entry * |
3206 | elf_hash_entry (struct ppc_link_hash_entry *ent) | |
3207 | { | |
3208 | return (struct elf_link_hash_entry *) ent; | |
3209 | } | |
3210 | ||
65f38f15 AM |
3211 | /* ppc64 ELF linker hash table. */ |
3212 | ||
3213 | struct ppc_link_hash_table | |
3214 | { | |
3215 | struct elf_link_hash_table elf; | |
3216 | ||
721956f4 AM |
3217 | /* The stub hash table. */ |
3218 | struct bfd_hash_table stub_hash_table; | |
3219 | ||
3220 | /* Another hash table for plt_branch stubs. */ | |
3221 | struct bfd_hash_table branch_hash_table; | |
3222 | ||
3b421ab3 AM |
3223 | /* Hash table for function prologue tocsave. */ |
3224 | htab_t tocsave_htab; | |
3225 | ||
e7d1c40c AM |
3226 | /* Various options and other info passed from the linker. */ |
3227 | struct ppc64_elf_params *params; | |
721956f4 | 3228 | |
6f20ed8a AM |
3229 | /* The size of sec_info below. */ |
3230 | unsigned int sec_info_arr_size; | |
3231 | ||
3232 | /* Per-section array of extra section info. Done this way rather | |
3233 | than as part of ppc64_elf_section_data so we have the info for | |
3234 | non-ppc64 sections. */ | |
3235 | struct | |
3236 | { | |
3237 | /* Along with elf_gp, specifies the TOC pointer used by this section. */ | |
ad8e1ba5 | 3238 | bfd_vma toc_off; |
6f20ed8a AM |
3239 | |
3240 | union | |
3241 | { | |
3242 | /* The section group that this section belongs to. */ | |
3243 | struct map_stub *group; | |
3244 | /* A temp section list pointer. */ | |
3245 | asection *list; | |
3246 | } u; | |
3247 | } *sec_info; | |
721956f4 | 3248 | |
a4b6fadd AM |
3249 | /* Linked list of groups. */ |
3250 | struct map_stub *group; | |
3251 | ||
ad8e1ba5 AM |
3252 | /* Temp used when calculating TOC pointers. */ |
3253 | bfd_vma toc_curr; | |
bf102f86 AM |
3254 | bfd *toc_bfd; |
3255 | asection *toc_first_sec; | |
ad8e1ba5 | 3256 | |
b3fac117 AM |
3257 | /* Used when adding symbols. */ |
3258 | struct ppc_link_hash_entry *dot_syms; | |
3259 | ||
33e44f2e | 3260 | /* Shortcuts to get to dynamic linker sections. */ |
4ce794b7 | 3261 | asection *glink; |
9e390558 | 3262 | asection *global_entry; |
82bd7b59 | 3263 | asection *sfpr; |
2d7ad24e AM |
3264 | asection *pltlocal; |
3265 | asection *relpltlocal; | |
4ce794b7 AM |
3266 | asection *brlt; |
3267 | asection *relbrlt; | |
58d180e8 | 3268 | asection *glink_eh_frame; |
ec338859 | 3269 | |
8387904d AM |
3270 | /* Shortcut to .__tls_get_addr and __tls_get_addr. */ |
3271 | struct ppc_link_hash_entry *tls_get_addr; | |
3272 | struct ppc_link_hash_entry *tls_get_addr_fd; | |
9e7028aa AM |
3273 | struct ppc_link_hash_entry *tga_desc; |
3274 | struct ppc_link_hash_entry *tga_desc_fd; | |
a804e476 | 3275 | struct map_stub *tga_group; |
411e1bfb | 3276 | |
927be08e AM |
3277 | /* The size of reliplt used by got entry relocs. */ |
3278 | bfd_size_type got_reli_size; | |
3279 | ||
0aac2413 | 3280 | /* DT_RELR array of section/r_offset. */ |
1657026c AM |
3281 | size_t relr_alloc; |
3282 | size_t relr_count; | |
0aac2413 AM |
3283 | struct |
3284 | { | |
3285 | asection *sec; | |
3286 | bfd_vma off; | |
3287 | } *relr; | |
1657026c | 3288 | |
9b5ecbd0 | 3289 | /* Statistics. */ |
7aba54da | 3290 | unsigned long stub_count[ppc_stub_save_res]; |
9b5ecbd0 | 3291 | |
ee75fd95 AM |
3292 | /* Number of stubs against global syms. */ |
3293 | unsigned long stub_globals; | |
3294 | ||
ee67d69a AM |
3295 | /* Set if we're linking code with function descriptors. */ |
3296 | unsigned int opd_abi:1; | |
3297 | ||
4c52953f | 3298 | /* Support for multiple toc sections. */ |
33c0ec9d | 3299 | unsigned int do_multi_toc:1; |
4c52953f | 3300 | unsigned int multi_toc_needed:1; |
927be08e | 3301 | unsigned int second_toc_pass:1; |
67f0cbdb | 3302 | unsigned int do_toc_opt:1; |
4c52953f | 3303 | |
9a23f96e AM |
3304 | /* Set if tls optimization is enabled. */ |
3305 | unsigned int do_tls_opt:1; | |
3306 | ||
3e04d765 AM |
3307 | /* Set if inline plt calls should be converted to direct calls. */ |
3308 | unsigned int can_convert_all_inline_plt:1; | |
3309 | ||
0441f94f AM |
3310 | /* Set if a stub_offset changed. */ |
3311 | unsigned int stub_changed:1; | |
3312 | ||
5d1634d7 | 3313 | /* Set on error. */ |
99877b66 | 3314 | unsigned int stub_error:1; |
721956f4 | 3315 | |
8c5b4e52 AM |
3316 | /* Whether func_desc_adjust needs to be run over symbols. */ |
3317 | unsigned int need_func_desc_adj:1; | |
721956f4 | 3318 | |
f378ab09 AM |
3319 | /* Whether plt calls for ELFv2 localentry:0 funcs have been optimized. */ |
3320 | unsigned int has_plt_localentry0:1; | |
3321 | ||
5663e321 AM |
3322 | /* Whether calls are made via the PLT from NOTOC functions. */ |
3323 | unsigned int notoc_plt:1; | |
3324 | ||
e10a07b3 AM |
3325 | /* Whether any code linked seems to be Power10. */ |
3326 | unsigned int has_power10_relocs:1; | |
3327 | ||
ecc741e6 AM |
3328 | /* Incremented once for each stub sized. */ |
3329 | unsigned int stub_id; | |
3330 | ||
721956f4 AM |
3331 | /* Incremented every time we size stubs. */ |
3332 | unsigned int stub_iteration; | |
0441f94f AM |
3333 | |
3334 | /* After 20 iterations of stub sizing we no longer allow stubs to | |
3335 | shrink. This is to break out of a pathological case where adding | |
3336 | stubs or increasing their size on one iteration decreases section | |
3337 | gaps (perhaps due to alignment), which then results in smaller | |
3338 | stubs on the next iteration. */ | |
3339 | #define STUB_SHRINK_ITER 20 | |
65f38f15 AM |
3340 | }; |
3341 | ||
4c52953f AM |
3342 | /* Rename some of the generic section flags to better document how they |
3343 | are used here. */ | |
b0dddeec AM |
3344 | |
3345 | /* Nonzero if this section has TLS related relocations. */ | |
3346 | #define has_tls_reloc sec_flg0 | |
3347 | ||
9737e8af AM |
3348 | /* Nonzero if this section has a call to __tls_get_addr lacking marker |
3349 | relocations. */ | |
3350 | #define nomark_tls_get_addr sec_flg1 | |
b0dddeec AM |
3351 | |
3352 | /* Nonzero if this section has any toc or got relocs. */ | |
3353 | #define has_toc_reloc sec_flg2 | |
3354 | ||
3355 | /* Nonzero if this section has a call to another section that uses | |
3356 | the toc or got. */ | |
d77c8a4b | 3357 | #define makes_toc_func_call sec_flg3 |
b0dddeec AM |
3358 | |
3359 | /* Recursion protection when determining above flag. */ | |
d77c8a4b | 3360 | #define call_check_in_progress sec_flg4 |
70cc837d | 3361 | #define call_check_done sec_flg5 |
4c52953f | 3362 | |
65f38f15 AM |
3363 | /* Get the ppc64 ELF linker hash table from a link_info structure. */ |
3364 | ||
3365 | #define ppc_hash_table(p) \ | |
573eb292 AM |
3366 | ((is_elf_hash_table ((p)->hash) \ |
3367 | && elf_hash_table_id (elf_hash_table (p)) == PPC64_ELF_DATA) \ | |
3368 | ? (struct ppc_link_hash_table *) (p)->hash : NULL) | |
65f38f15 | 3369 | |
721956f4 AM |
3370 | #define ppc_stub_hash_lookup(table, string, create, copy) \ |
3371 | ((struct ppc_stub_hash_entry *) \ | |
3372 | bfd_hash_lookup ((table), (string), (create), (copy))) | |
3373 | ||
3374 | #define ppc_branch_hash_lookup(table, string, create, copy) \ | |
3375 | ((struct ppc_branch_hash_entry *) \ | |
3376 | bfd_hash_lookup ((table), (string), (create), (copy))) | |
3377 | ||
3378 | /* Create an entry in the stub hash table. */ | |
3379 | ||
3380 | static struct bfd_hash_entry * | |
4ce794b7 AM |
3381 | stub_hash_newfunc (struct bfd_hash_entry *entry, |
3382 | struct bfd_hash_table *table, | |
3383 | const char *string) | |
721956f4 AM |
3384 | { |
3385 | /* Allocate the structure if it has not already been allocated by a | |
3386 | subclass. */ | |
3387 | if (entry == NULL) | |
3388 | { | |
3389 | entry = bfd_hash_allocate (table, sizeof (struct ppc_stub_hash_entry)); | |
3390 | if (entry == NULL) | |
3391 | return entry; | |
3392 | } | |
3393 | ||
3394 | /* Call the allocation method of the superclass. */ | |
3395 | entry = bfd_hash_newfunc (entry, table, string); | |
3396 | if (entry != NULL) | |
3397 | { | |
3398 | struct ppc_stub_hash_entry *eh; | |
3399 | ||
3400 | /* Initialize the local fields. */ | |
3401 | eh = (struct ppc_stub_hash_entry *) entry; | |
7aba54da AM |
3402 | eh->type.main = ppc_stub_none; |
3403 | eh->type.sub = ppc_stub_toc; | |
3404 | eh->type.r2save = 0; | |
6f20ed8a | 3405 | eh->group = NULL; |
721956f4 AM |
3406 | eh->stub_offset = 0; |
3407 | eh->target_value = 0; | |
3408 | eh->target_section = NULL; | |
721956f4 | 3409 | eh->h = NULL; |
6911b7dc | 3410 | eh->plt_ent = NULL; |
ecc741e6 | 3411 | eh->symtype = 0; |
6911b7dc | 3412 | eh->other = 0; |
ecc741e6 | 3413 | eh->id = 0; |
721956f4 AM |
3414 | } |
3415 | ||
3416 | return entry; | |
3417 | } | |
3418 | ||
3419 | /* Create an entry in the branch hash table. */ | |
3420 | ||
3421 | static struct bfd_hash_entry * | |
4ce794b7 AM |
3422 | branch_hash_newfunc (struct bfd_hash_entry *entry, |
3423 | struct bfd_hash_table *table, | |
3424 | const char *string) | |
721956f4 AM |
3425 | { |
3426 | /* Allocate the structure if it has not already been allocated by a | |
3427 | subclass. */ | |
3428 | if (entry == NULL) | |
3429 | { | |
3430 | entry = bfd_hash_allocate (table, sizeof (struct ppc_branch_hash_entry)); | |
3431 | if (entry == NULL) | |
3432 | return entry; | |
3433 | } | |
3434 | ||
3435 | /* Call the allocation method of the superclass. */ | |
3436 | entry = bfd_hash_newfunc (entry, table, string); | |
3437 | if (entry != NULL) | |
3438 | { | |
3439 | struct ppc_branch_hash_entry *eh; | |
3440 | ||
3441 | /* Initialize the local fields. */ | |
3442 | eh = (struct ppc_branch_hash_entry *) entry; | |
3443 | eh->offset = 0; | |
3444 | eh->iter = 0; | |
3445 | } | |
3446 | ||
3447 | return entry; | |
3448 | } | |
3449 | ||
65f38f15 AM |
3450 | /* Create an entry in a ppc64 ELF linker hash table. */ |
3451 | ||
3452 | static struct bfd_hash_entry * | |
4ce794b7 AM |
3453 | link_hash_newfunc (struct bfd_hash_entry *entry, |
3454 | struct bfd_hash_table *table, | |
3455 | const char *string) | |
65f38f15 AM |
3456 | { |
3457 | /* Allocate the structure if it has not already been allocated by a | |
3458 | subclass. */ | |
3459 | if (entry == NULL) | |
3460 | { | |
3461 | entry = bfd_hash_allocate (table, sizeof (struct ppc_link_hash_entry)); | |
3462 | if (entry == NULL) | |
3463 | return entry; | |
3464 | } | |
3465 | ||
3466 | /* Call the allocation method of the superclass. */ | |
3467 | entry = _bfd_elf_link_hash_newfunc (entry, table, string); | |
3468 | if (entry != NULL) | |
3469 | { | |
3470 | struct ppc_link_hash_entry *eh = (struct ppc_link_hash_entry *) entry; | |
3471 | ||
b3fac117 | 3472 | memset (&eh->u.stub_cache, 0, |
908b32fc | 3473 | (sizeof (struct ppc_link_hash_entry) |
b3fac117 AM |
3474 | - offsetof (struct ppc_link_hash_entry, u.stub_cache))); |
3475 | ||
3476 | /* When making function calls, old ABI code references function entry | |
3477 | points (dot symbols), while new ABI code references the function | |
3478 | descriptor symbol. We need to make any combination of reference and | |
3479 | definition work together, without breaking archive linking. | |
3480 | ||
3481 | For a defined function "foo" and an undefined call to "bar": | |
3482 | An old object defines "foo" and ".foo", references ".bar" (possibly | |
3483 | "bar" too). | |
3484 | A new object defines "foo" and references "bar". | |
3485 | ||
3486 | A new object thus has no problem with its undefined symbols being | |
3487 | satisfied by definitions in an old object. On the other hand, the | |
3488 | old object won't have ".bar" satisfied by a new object. | |
3489 | ||
3490 | Keep a list of newly added dot-symbols. */ | |
3491 | ||
3492 | if (string[0] == '.') | |
3493 | { | |
3494 | struct ppc_link_hash_table *htab; | |
3495 | ||
3496 | htab = (struct ppc_link_hash_table *) table; | |
3497 | eh->u.next_dot_sym = htab->dot_syms; | |
3498 | htab->dot_syms = eh; | |
3499 | } | |
65f38f15 AM |
3500 | } |
3501 | ||
3502 | return entry; | |
3503 | } | |
3504 | ||
2cdcc330 AM |
3505 | struct tocsave_entry |
3506 | { | |
3b421ab3 AM |
3507 | asection *sec; |
3508 | bfd_vma offset; | |
3509 | }; | |
3510 | ||
3511 | static hashval_t | |
3512 | tocsave_htab_hash (const void *p) | |
3513 | { | |
3514 | const struct tocsave_entry *e = (const struct tocsave_entry *) p; | |
4aef7643 | 3515 | return ((bfd_vma) (intptr_t) e->sec ^ e->offset) >> 3; |
3b421ab3 AM |
3516 | } |
3517 | ||
3518 | static int | |
3519 | tocsave_htab_eq (const void *p1, const void *p2) | |
3520 | { | |
3521 | const struct tocsave_entry *e1 = (const struct tocsave_entry *) p1; | |
3522 | const struct tocsave_entry *e2 = (const struct tocsave_entry *) p2; | |
3523 | return e1->sec == e2->sec && e1->offset == e2->offset; | |
3524 | } | |
3525 | ||
68faa637 AM |
3526 | /* Destroy a ppc64 ELF linker hash table. */ |
3527 | ||
3528 | static void | |
d495ab0d | 3529 | ppc64_elf_link_hash_table_free (bfd *obfd) |
68faa637 | 3530 | { |
d495ab0d | 3531 | struct ppc_link_hash_table *htab; |
68faa637 | 3532 | |
d495ab0d | 3533 | htab = (struct ppc_link_hash_table *) obfd->link.hash; |
68faa637 AM |
3534 | if (htab->tocsave_htab) |
3535 | htab_delete (htab->tocsave_htab); | |
d495ab0d AM |
3536 | bfd_hash_table_free (&htab->branch_hash_table); |
3537 | bfd_hash_table_free (&htab->stub_hash_table); | |
3538 | _bfd_elf_link_hash_table_free (obfd); | |
68faa637 AM |
3539 | } |
3540 | ||
65f38f15 AM |
3541 | /* Create a ppc64 ELF linker hash table. */ |
3542 | ||
3543 | static struct bfd_link_hash_table * | |
4ce794b7 | 3544 | ppc64_elf_link_hash_table_create (bfd *abfd) |
65f38f15 AM |
3545 | { |
3546 | struct ppc_link_hash_table *htab; | |
986f0783 | 3547 | size_t amt = sizeof (struct ppc_link_hash_table); |
65f38f15 | 3548 | |
4ce794b7 | 3549 | htab = bfd_zmalloc (amt); |
65f38f15 AM |
3550 | if (htab == NULL) |
3551 | return NULL; | |
3552 | ||
66eb6687 | 3553 | if (!_bfd_elf_link_hash_table_init (&htab->elf, abfd, link_hash_newfunc, |
4dfe6ac6 NC |
3554 | sizeof (struct ppc_link_hash_entry), |
3555 | PPC64_ELF_DATA)) | |
65f38f15 | 3556 | { |
e2d34d7d | 3557 | free (htab); |
65f38f15 AM |
3558 | return NULL; |
3559 | } | |
3560 | ||
721956f4 | 3561 | /* Init the stub hash table too. */ |
66eb6687 AM |
3562 | if (!bfd_hash_table_init (&htab->stub_hash_table, stub_hash_newfunc, |
3563 | sizeof (struct ppc_stub_hash_entry))) | |
2915c55b | 3564 | { |
d495ab0d | 3565 | _bfd_elf_link_hash_table_free (abfd); |
2915c55b JK |
3566 | return NULL; |
3567 | } | |
721956f4 AM |
3568 | |
3569 | /* And the branch hash table. */ | |
66eb6687 AM |
3570 | if (!bfd_hash_table_init (&htab->branch_hash_table, branch_hash_newfunc, |
3571 | sizeof (struct ppc_branch_hash_entry))) | |
2915c55b JK |
3572 | { |
3573 | bfd_hash_table_free (&htab->stub_hash_table); | |
d495ab0d | 3574 | _bfd_elf_link_hash_table_free (abfd); |
2915c55b JK |
3575 | return NULL; |
3576 | } | |
721956f4 | 3577 | |
3b421ab3 AM |
3578 | htab->tocsave_htab = htab_try_create (1024, |
3579 | tocsave_htab_hash, | |
3580 | tocsave_htab_eq, | |
3581 | NULL); | |
3582 | if (htab->tocsave_htab == NULL) | |
2915c55b | 3583 | { |
d495ab0d | 3584 | ppc64_elf_link_hash_table_free (abfd); |
2915c55b JK |
3585 | return NULL; |
3586 | } | |
d495ab0d | 3587 | htab->elf.root.hash_table_free = ppc64_elf_link_hash_table_free; |
3b421ab3 | 3588 | |
3254fd24 AM |
3589 | /* Initializing two fields of the union is just cosmetic. We really |
3590 | only care about glist, but when compiled on a 32-bit host the | |
3591 | bfd_vma fields are larger. Setting the bfd_vma to zero makes | |
3592 | debugger inspection of these fields look nicer. */ | |
a6aa5195 AM |
3593 | htab->elf.init_got_refcount.refcount = 0; |
3594 | htab->elf.init_got_refcount.glist = NULL; | |
3595 | htab->elf.init_plt_refcount.refcount = 0; | |
3596 | htab->elf.init_plt_refcount.glist = NULL; | |
3597 | htab->elf.init_got_offset.offset = 0; | |
3598 | htab->elf.init_got_offset.glist = NULL; | |
3599 | htab->elf.init_plt_offset.offset = 0; | |
3600 | htab->elf.init_plt_offset.glist = NULL; | |
3254fd24 | 3601 | |
65f38f15 AM |
3602 | return &htab->elf.root; |
3603 | } | |
3604 | ||
bfeb4a28 AM |
3605 | /* Create sections for linker generated code. */ |
3606 | ||
0a1b45a2 | 3607 | static bool |
bfeb4a28 AM |
3608 | create_linkage_sections (bfd *dynobj, struct bfd_link_info *info) |
3609 | { | |
3610 | struct ppc_link_hash_table *htab; | |
3611 | flagword flags; | |
3612 | ||
3613 | htab = ppc_hash_table (info); | |
3614 | ||
bfeb4a28 AM |
3615 | flags = (SEC_ALLOC | SEC_LOAD | SEC_CODE | SEC_READONLY |
3616 | | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED); | |
b32547cd AM |
3617 | if (htab->params->save_restore_funcs) |
3618 | { | |
3619 | /* Create .sfpr for code to save and restore fp regs. */ | |
3620 | htab->sfpr = bfd_make_section_anyway_with_flags (dynobj, ".sfpr", | |
3621 | flags); | |
3622 | if (htab->sfpr == NULL | |
fd361982 | 3623 | || !bfd_set_section_alignment (htab->sfpr, 2)) |
0a1b45a2 | 3624 | return false; |
b32547cd AM |
3625 | } |
3626 | ||
3627 | if (bfd_link_relocatable (info)) | |
0a1b45a2 | 3628 | return true; |
bfeb4a28 AM |
3629 | |
3630 | /* Create .glink for lazy dynamic linking support. */ | |
3631 | htab->glink = bfd_make_section_anyway_with_flags (dynobj, ".glink", | |
3632 | flags); | |
3633 | if (htab->glink == NULL | |
fd361982 | 3634 | || !bfd_set_section_alignment (htab->glink, 3)) |
0a1b45a2 | 3635 | return false; |
bfeb4a28 | 3636 | |
9e390558 AM |
3637 | /* The part of .glink used by global entry stubs, separate so that |
3638 | it can be aligned appropriately without affecting htab->glink. */ | |
3639 | htab->global_entry = bfd_make_section_anyway_with_flags (dynobj, ".glink", | |
3640 | flags); | |
3641 | if (htab->global_entry == NULL | |
fd361982 | 3642 | || !bfd_set_section_alignment (htab->global_entry, 2)) |
0a1b45a2 | 3643 | return false; |
9e390558 | 3644 | |
bfeb4a28 AM |
3645 | if (!info->no_ld_generated_unwind_info) |
3646 | { | |
3647 | flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_HAS_CONTENTS | |
3648 | | SEC_IN_MEMORY | SEC_LINKER_CREATED); | |
3649 | htab->glink_eh_frame = bfd_make_section_anyway_with_flags (dynobj, | |
3650 | ".eh_frame", | |
3651 | flags); | |
3652 | if (htab->glink_eh_frame == NULL | |
fd361982 | 3653 | || !bfd_set_section_alignment (htab->glink_eh_frame, 2)) |
0a1b45a2 | 3654 | return false; |
bfeb4a28 AM |
3655 | } |
3656 | ||
3657 | flags = SEC_ALLOC | SEC_LINKER_CREATED; | |
33e44f2e AM |
3658 | htab->elf.iplt = bfd_make_section_anyway_with_flags (dynobj, ".iplt", flags); |
3659 | if (htab->elf.iplt == NULL | |
fd361982 | 3660 | || !bfd_set_section_alignment (htab->elf.iplt, 3)) |
0a1b45a2 | 3661 | return false; |
bfeb4a28 AM |
3662 | |
3663 | flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY | |
3664 | | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED); | |
33e44f2e AM |
3665 | htab->elf.irelplt |
3666 | = bfd_make_section_anyway_with_flags (dynobj, ".rela.iplt", flags); | |
3667 | if (htab->elf.irelplt == NULL | |
fd361982 | 3668 | || !bfd_set_section_alignment (htab->elf.irelplt, 3)) |
0a1b45a2 | 3669 | return false; |
bfeb4a28 AM |
3670 | |
3671 | /* Create branch lookup table for plt_branch stubs. */ | |
3672 | flags = (SEC_ALLOC | SEC_LOAD | |
3673 | | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED); | |
3674 | htab->brlt = bfd_make_section_anyway_with_flags (dynobj, ".branch_lt", | |
3675 | flags); | |
3676 | if (htab->brlt == NULL | |
fd361982 | 3677 | || !bfd_set_section_alignment (htab->brlt, 3)) |
0a1b45a2 | 3678 | return false; |
bfeb4a28 | 3679 | |
2d7ad24e AM |
3680 | /* Local plt entries, put in .branch_lt but a separate section for |
3681 | convenience. */ | |
3682 | htab->pltlocal = bfd_make_section_anyway_with_flags (dynobj, ".branch_lt", | |
3683 | flags); | |
3684 | if (htab->pltlocal == NULL | |
fd361982 | 3685 | || !bfd_set_section_alignment (htab->pltlocal, 3)) |
0a1b45a2 | 3686 | return false; |
2d7ad24e | 3687 | |
0e1862bb | 3688 | if (!bfd_link_pic (info)) |
0a1b45a2 | 3689 | return true; |
bfeb4a28 AM |
3690 | |
3691 | flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY | |
3692 | | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED); | |
2d7ad24e AM |
3693 | htab->relbrlt |
3694 | = bfd_make_section_anyway_with_flags (dynobj, ".rela.branch_lt", flags); | |
bfeb4a28 | 3695 | if (htab->relbrlt == NULL |
fd361982 | 3696 | || !bfd_set_section_alignment (htab->relbrlt, 3)) |
0a1b45a2 | 3697 | return false; |
bfeb4a28 | 3698 | |
2d7ad24e AM |
3699 | htab->relpltlocal |
3700 | = bfd_make_section_anyway_with_flags (dynobj, ".rela.branch_lt", flags); | |
3701 | if (htab->relpltlocal == NULL | |
fd361982 | 3702 | || !bfd_set_section_alignment (htab->relpltlocal, 3)) |
0a1b45a2 | 3703 | return false; |
2d7ad24e | 3704 | |
0a1b45a2 | 3705 | return true; |
bfeb4a28 AM |
3706 | } |
3707 | ||
e717da7e AM |
3708 | /* Satisfy the ELF linker by filling in some fields in our fake bfd. */ |
3709 | ||
0a1b45a2 | 3710 | bool |
e7d1c40c AM |
3711 | ppc64_elf_init_stub_bfd (struct bfd_link_info *info, |
3712 | struct ppc64_elf_params *params) | |
e717da7e AM |
3713 | { |
3714 | struct ppc_link_hash_table *htab; | |
3715 | ||
e7d1c40c | 3716 | elf_elfheader (params->stub_bfd)->e_ident[EI_CLASS] = ELFCLASS64; |
e717da7e AM |
3717 | |
3718 | /* Always hook our dynamic sections into the first bfd, which is the | |
3719 | linker created stub bfd. This ensures that the GOT header is at | |
3720 | the start of the output TOC section. */ | |
3721 | htab = ppc_hash_table (info); | |
e7d1c40c AM |
3722 | htab->elf.dynobj = params->stub_bfd; |
3723 | htab->params = params; | |
bfeb4a28 | 3724 | |
bfeb4a28 | 3725 | return create_linkage_sections (htab->elf.dynobj, info); |
e717da7e AM |
3726 | } |
3727 | ||
721956f4 AM |
3728 | /* Build a name for an entry in the stub hash table. */ |
3729 | ||
3730 | static char * | |
4ce794b7 AM |
3731 | ppc_stub_name (const asection *input_section, |
3732 | const asection *sym_sec, | |
3733 | const struct ppc_link_hash_entry *h, | |
3734 | const Elf_Internal_Rela *rel) | |
721956f4 AM |
3735 | { |
3736 | char *stub_name; | |
bcaa2f82 | 3737 | ssize_t len; |
721956f4 AM |
3738 | |
3739 | /* rel->r_addend is actually 64 bit, but who uses more than +/- 2^31 | |
3740 | offsets from a sym as a branch target? In fact, we could | |
3741 | probably assume the addend is always zero. */ | |
3742 | BFD_ASSERT (((int) rel->r_addend & 0xffffffff) == rel->r_addend); | |
3743 | ||
3744 | if (h) | |
3745 | { | |
3746 | len = 8 + 1 + strlen (h->elf.root.root.string) + 1 + 8 + 1; | |
3747 | stub_name = bfd_malloc (len); | |
46de2a7c AM |
3748 | if (stub_name == NULL) |
3749 | return stub_name; | |
3750 | ||
bcaa2f82 AM |
3751 | len = sprintf (stub_name, "%08x.%s+%x", |
3752 | input_section->id & 0xffffffff, | |
3753 | h->elf.root.root.string, | |
3754 | (int) rel->r_addend & 0xffffffff); | |
721956f4 AM |
3755 | } |
3756 | else | |
3757 | { | |
ad8e1ba5 | 3758 | len = 8 + 1 + 8 + 1 + 8 + 1 + 8 + 1; |
721956f4 | 3759 | stub_name = bfd_malloc (len); |
46de2a7c AM |
3760 | if (stub_name == NULL) |
3761 | return stub_name; | |
3762 | ||
bcaa2f82 AM |
3763 | len = sprintf (stub_name, "%08x.%x:%x+%x", |
3764 | input_section->id & 0xffffffff, | |
3765 | sym_sec->id & 0xffffffff, | |
3766 | (int) ELF64_R_SYM (rel->r_info) & 0xffffffff, | |
3767 | (int) rel->r_addend & 0xffffffff); | |
721956f4 | 3768 | } |
bcaa2f82 | 3769 | if (len > 2 && stub_name[len - 2] == '+' && stub_name[len - 1] == '0') |
ee75fd95 | 3770 | stub_name[len - 2] = 0; |
721956f4 AM |
3771 | return stub_name; |
3772 | } | |
3773 | ||
e10a07b3 | 3774 | /* If mixing power10 with non-power10 code and --power10-stubs is not |
7aba54da AM |
3775 | specified (or is auto) then there may be multiple stub types for any |
3776 | given symbol. Up to three classes of stubs are stored in separate | |
3777 | stub_hash_table entries having the same key string. The entries | |
3778 | will always be adjacent on entry->root.next chain, even if hash | |
3779 | table resizing occurs. This function selects the correct entry to | |
3780 | use. */ | |
e10a07b3 AM |
3781 | |
3782 | static struct ppc_stub_hash_entry * | |
7aba54da AM |
3783 | select_alt_stub (struct ppc_stub_hash_entry *entry, |
3784 | enum elf_ppc64_reloc_type r_type) | |
e10a07b3 | 3785 | { |
7aba54da | 3786 | enum ppc_stub_sub_type subt; |
e10a07b3 | 3787 | |
7aba54da AM |
3788 | switch (r_type) |
3789 | { | |
3790 | case R_PPC64_REL24_NOTOC: | |
3791 | subt = ppc_stub_notoc; | |
3792 | break; | |
3793 | case R_PPC64_REL24_P9NOTOC: | |
3794 | subt = ppc_stub_p9notoc; | |
3795 | break; | |
3796 | default: | |
3797 | subt = ppc_stub_toc; | |
3798 | break; | |
3799 | } | |
e10a07b3 | 3800 | |
7aba54da | 3801 | while (entry != NULL && entry->type.sub != subt) |
e10a07b3 AM |
3802 | { |
3803 | const char *stub_name = entry->root.string; | |
3804 | ||
3805 | entry = (struct ppc_stub_hash_entry *) entry->root.next; | |
3806 | if (entry != NULL | |
3807 | && entry->root.string != stub_name) | |
3808 | entry = NULL; | |
3809 | } | |
3810 | ||
3811 | return entry; | |
3812 | } | |
3813 | ||
721956f4 AM |
3814 | /* Look up an entry in the stub hash. Stub entries are cached because |
3815 | creating the stub name takes a bit of time. */ | |
3816 | ||
3817 | static struct ppc_stub_hash_entry * | |
4ce794b7 AM |
3818 | ppc_get_stub_entry (const asection *input_section, |
3819 | const asection *sym_sec, | |
039b3fef | 3820 | struct ppc_link_hash_entry *h, |
4ce794b7 AM |
3821 | const Elf_Internal_Rela *rel, |
3822 | struct ppc_link_hash_table *htab) | |
721956f4 AM |
3823 | { |
3824 | struct ppc_stub_hash_entry *stub_entry; | |
6f20ed8a | 3825 | struct map_stub *group; |
721956f4 AM |
3826 | |
3827 | /* If this input section is part of a group of sections sharing one | |
3828 | stub section, then use the id of the first section in the group. | |
3829 | Stub names need to include a section id, as there may well be | |
3830 | more than one stub used to reach say, printf, and we need to | |
3831 | distinguish between them. */ | |
6f20ed8a | 3832 | group = htab->sec_info[input_section->id].u.group; |
89d77b8a AM |
3833 | if (group == NULL) |
3834 | return NULL; | |
721956f4 | 3835 | |
b3fac117 AM |
3836 | if (h != NULL && h->u.stub_cache != NULL |
3837 | && h->u.stub_cache->h == h | |
6f20ed8a | 3838 | && h->u.stub_cache->group == group) |
721956f4 | 3839 | { |
b3fac117 | 3840 | stub_entry = h->u.stub_cache; |
721956f4 AM |
3841 | } |
3842 | else | |
3843 | { | |
3844 | char *stub_name; | |
3845 | ||
6f20ed8a | 3846 | stub_name = ppc_stub_name (group->link_sec, sym_sec, h, rel); |
721956f4 AM |
3847 | if (stub_name == NULL) |
3848 | return NULL; | |
3849 | ||
3850 | stub_entry = ppc_stub_hash_lookup (&htab->stub_hash_table, | |
0a1b45a2 | 3851 | stub_name, false, false); |
721956f4 | 3852 | if (h != NULL) |
b3fac117 | 3853 | h->u.stub_cache = stub_entry; |
721956f4 AM |
3854 | |
3855 | free (stub_name); | |
3856 | } | |
3857 | ||
e10a07b3 | 3858 | if (stub_entry != NULL && htab->params->power10_stubs == -1) |
7aba54da | 3859 | stub_entry = select_alt_stub (stub_entry, ELF64_R_TYPE (rel->r_info)); |
e10a07b3 | 3860 | |
721956f4 AM |
3861 | return stub_entry; |
3862 | } | |
3863 | ||
3864 | /* Add a new stub entry to the stub hash. Not all fields of the new | |
3865 | stub entry are initialised. */ | |
3866 | ||
3867 | static struct ppc_stub_hash_entry * | |
4ce794b7 AM |
3868 | ppc_add_stub (const char *stub_name, |
3869 | asection *section, | |
25f53a85 | 3870 | struct bfd_link_info *info) |
721956f4 | 3871 | { |
25f53a85 | 3872 | struct ppc_link_hash_table *htab = ppc_hash_table (info); |
6f20ed8a | 3873 | struct map_stub *group; |
721956f4 AM |
3874 | asection *link_sec; |
3875 | asection *stub_sec; | |
3876 | struct ppc_stub_hash_entry *stub_entry; | |
3877 | ||
6f20ed8a AM |
3878 | group = htab->sec_info[section->id].u.group; |
3879 | link_sec = group->link_sec; | |
3880 | stub_sec = group->stub_sec; | |
721956f4 AM |
3881 | if (stub_sec == NULL) |
3882 | { | |
6f20ed8a AM |
3883 | size_t namelen; |
3884 | bfd_size_type len; | |
3885 | char *s_name; | |
721956f4 | 3886 | |
6f20ed8a AM |
3887 | namelen = strlen (link_sec->name); |
3888 | len = namelen + sizeof (STUB_SUFFIX); | |
3889 | s_name = bfd_alloc (htab->params->stub_bfd, len); | |
3890 | if (s_name == NULL) | |
3891 | return NULL; | |
721956f4 | 3892 | |
6f20ed8a AM |
3893 | memcpy (s_name, link_sec->name, namelen); |
3894 | memcpy (s_name + namelen, STUB_SUFFIX, sizeof (STUB_SUFFIX)); | |
3895 | stub_sec = (*htab->params->add_stub_section) (s_name, link_sec); | |
3896 | if (stub_sec == NULL) | |
3897 | return NULL; | |
3898 | group->stub_sec = stub_sec; | |
721956f4 AM |
3899 | } |
3900 | ||
3901 | /* Enter this entry into the linker stub hash table. */ | |
3902 | stub_entry = ppc_stub_hash_lookup (&htab->stub_hash_table, stub_name, | |
0a1b45a2 | 3903 | true, false); |
721956f4 AM |
3904 | if (stub_entry == NULL) |
3905 | { | |
695344c0 | 3906 | /* xgettext:c-format */ |
cf97bcb0 AM |
3907 | _bfd_error_handler (_("%pB: cannot create stub entry %s"), |
3908 | section->owner, stub_name); | |
721956f4 AM |
3909 | return NULL; |
3910 | } | |
3911 | ||
6f20ed8a | 3912 | stub_entry->group = group; |
721956f4 | 3913 | stub_entry->stub_offset = 0; |
721956f4 AM |
3914 | return stub_entry; |
3915 | } | |
3916 | ||
7aba54da AM |
3917 | /* A stub has already been created, but it may not be the required |
3918 | type. We shouldn't be transitioning from plt_call to long_branch | |
3919 | stubs or vice versa, but we might be upgrading from plt_call to | |
3920 | plt_call with r2save for example. */ | |
3921 | ||
3922 | static bool | |
3923 | ppc_merge_stub (struct ppc_link_hash_table *htab, | |
3924 | struct ppc_stub_hash_entry *stub_entry, | |
3925 | struct ppc_stub_type stub_type, | |
3926 | enum elf_ppc64_reloc_type r_type) | |
3927 | { | |
3928 | struct ppc_stub_type old_type = stub_entry->type; | |
3929 | ||
3930 | if (old_type.main == ppc_stub_save_res) | |
3931 | return true; | |
3932 | ||
3933 | if (htab->params->power10_stubs == -1) | |
3934 | { | |
3935 | /* For --power10-stubs=auto, don't merge _notoc and other | |
3936 | varieties of stubs. */ | |
3937 | struct ppc_stub_hash_entry *alt_stub; | |
3938 | ||
3939 | alt_stub = select_alt_stub (stub_entry, r_type); | |
3940 | if (alt_stub == NULL) | |
3941 | { | |
3942 | alt_stub = ((struct ppc_stub_hash_entry *) | |
3943 | stub_hash_newfunc (NULL, | |
3944 | &htab->stub_hash_table, | |
3945 | stub_entry->root.string)); | |
3946 | if (alt_stub == NULL) | |
3947 | return false; | |
3948 | ||
3949 | *alt_stub = *stub_entry; | |
3950 | stub_entry->root.next = &alt_stub->root; | |
3951 | ||
3952 | /* Sort notoc stubs first, then toc stubs, then p9notoc. | |
3953 | Not that it matters, this just puts smaller stubs first. */ | |
3954 | if (stub_type.sub == ppc_stub_notoc) | |
3955 | alt_stub = stub_entry; | |
3956 | else if (stub_type.sub == ppc_stub_p9notoc | |
3957 | && alt_stub->root.next | |
3958 | && alt_stub->root.next->string == alt_stub->root.string) | |
3959 | { | |
3960 | struct ppc_stub_hash_entry *next | |
3961 | = (struct ppc_stub_hash_entry *) alt_stub->root.next; | |
3962 | alt_stub->type = next->type; | |
3963 | alt_stub = next; | |
3964 | } | |
3965 | alt_stub->type = stub_type; | |
3966 | return true; | |
3967 | } | |
3968 | stub_entry = alt_stub; | |
3969 | } | |
3970 | ||
3971 | old_type = stub_entry->type; | |
3972 | if (old_type.main == ppc_stub_plt_branch) | |
04cb922a | 3973 | old_type.main = ppc_stub_long_branch; |
7aba54da AM |
3974 | |
3975 | if (old_type.main != stub_type.main | |
3976 | || (old_type.sub != stub_type.sub | |
3977 | && old_type.sub != ppc_stub_toc | |
3978 | && stub_type.sub != ppc_stub_toc)) | |
3979 | abort (); | |
3980 | ||
3981 | stub_entry->type.sub |= stub_type.sub; | |
3982 | stub_entry->type.r2save |= stub_type.r2save; | |
3983 | return true; | |
3984 | } | |
3985 | ||
e717da7e AM |
3986 | /* Create .got and .rela.got sections in ABFD, and .got in dynobj if |
3987 | not already done. */ | |
65f38f15 | 3988 | |
0a1b45a2 | 3989 | static bool |
e717da7e | 3990 | create_got_section (bfd *abfd, struct bfd_link_info *info) |
65f38f15 | 3991 | { |
e717da7e AM |
3992 | asection *got, *relgot; |
3993 | flagword flags; | |
3994 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
65f38f15 | 3995 | |
0c8d6e5c | 3996 | if (!is_ppc64_elf (abfd)) |
0a1b45a2 | 3997 | return false; |
4dfe6ac6 | 3998 | if (htab == NULL) |
0a1b45a2 | 3999 | return false; |
0ffa91dd | 4000 | |
33e44f2e AM |
4001 | if (!htab->elf.sgot |
4002 | && !_bfd_elf_create_got_section (htab->elf.dynobj, info)) | |
0a1b45a2 | 4003 | return false; |
e717da7e AM |
4004 | |
4005 | flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY | |
4006 | | SEC_LINKER_CREATED); | |
4007 | ||
c456f082 | 4008 | got = bfd_make_section_anyway_with_flags (abfd, ".got", flags); |
e717da7e | 4009 | if (!got |
fd361982 | 4010 | || !bfd_set_section_alignment (got, 3)) |
0a1b45a2 | 4011 | return false; |
65f38f15 | 4012 | |
c456f082 AM |
4013 | relgot = bfd_make_section_anyway_with_flags (abfd, ".rela.got", |
4014 | flags | SEC_READONLY); | |
e717da7e | 4015 | if (!relgot |
fd361982 | 4016 | || !bfd_set_section_alignment (relgot, 3)) |
0a1b45a2 | 4017 | return false; |
e717da7e AM |
4018 | |
4019 | ppc64_elf_tdata (abfd)->got = got; | |
4020 | ppc64_elf_tdata (abfd)->relgot = relgot; | |
0a1b45a2 | 4021 | return true; |
65f38f15 | 4022 | } |
5bd4f169 | 4023 | |
b31867b6 AM |
4024 | /* Follow indirect and warning symbol links. */ |
4025 | ||
4026 | static inline struct bfd_link_hash_entry * | |
4027 | follow_link (struct bfd_link_hash_entry *h) | |
4028 | { | |
4029 | while (h->type == bfd_link_hash_indirect | |
4030 | || h->type == bfd_link_hash_warning) | |
4031 | h = h->u.i.link; | |
4032 | return h; | |
4033 | } | |
4034 | ||
4035 | static inline struct elf_link_hash_entry * | |
4036 | elf_follow_link (struct elf_link_hash_entry *h) | |
4037 | { | |
4038 | return (struct elf_link_hash_entry *) follow_link (&h->root); | |
4039 | } | |
4040 | ||
4041 | static inline struct ppc_link_hash_entry * | |
4042 | ppc_follow_link (struct ppc_link_hash_entry *h) | |
4043 | { | |
ed7007c1 | 4044 | return ppc_elf_hash_entry (elf_follow_link (&h->elf)); |
b31867b6 AM |
4045 | } |
4046 | ||
40d16e0b AM |
4047 | /* Merge PLT info on FROM with that on TO. */ |
4048 | ||
4049 | static void | |
4050 | move_plt_plist (struct ppc_link_hash_entry *from, | |
4051 | struct ppc_link_hash_entry *to) | |
4052 | { | |
4053 | if (from->elf.plt.plist != NULL) | |
4054 | { | |
4055 | if (to->elf.plt.plist != NULL) | |
4056 | { | |
4057 | struct plt_entry **entp; | |
4058 | struct plt_entry *ent; | |
4059 | ||
4060 | for (entp = &from->elf.plt.plist; (ent = *entp) != NULL; ) | |
4061 | { | |
4062 | struct plt_entry *dent; | |
4063 | ||
4064 | for (dent = to->elf.plt.plist; dent != NULL; dent = dent->next) | |
4065 | if (dent->addend == ent->addend) | |
4066 | { | |
4067 | dent->plt.refcount += ent->plt.refcount; | |
4068 | *entp = ent->next; | |
4069 | break; | |
4070 | } | |
4071 | if (dent == NULL) | |
4072 | entp = &ent->next; | |
4073 | } | |
4074 | *entp = to->elf.plt.plist; | |
4075 | } | |
4076 | ||
4077 | to->elf.plt.plist = from->elf.plt.plist; | |
4078 | from->elf.plt.plist = NULL; | |
4079 | } | |
4080 | } | |
4081 | ||
65f38f15 AM |
4082 | /* Copy the extra info we tack onto an elf_link_hash_entry. */ |
4083 | ||
4084 | static void | |
fcfa13d2 AM |
4085 | ppc64_elf_copy_indirect_symbol (struct bfd_link_info *info, |
4086 | struct elf_link_hash_entry *dir, | |
4087 | struct elf_link_hash_entry *ind) | |
65f38f15 AM |
4088 | { |
4089 | struct ppc_link_hash_entry *edir, *eind; | |
4090 | ||
ed7007c1 AM |
4091 | edir = ppc_elf_hash_entry (dir); |
4092 | eind = ppc_elf_hash_entry (ind); | |
65f38f15 | 4093 | |
c79d6685 AM |
4094 | edir->is_func |= eind->is_func; |
4095 | edir->is_func_descriptor |= eind->is_func_descriptor; | |
4096 | edir->tls_mask |= eind->tls_mask; | |
4097 | if (eind->oh != NULL) | |
4098 | edir->oh = ppc_follow_link (eind->oh); | |
4099 | ||
474436e6 | 4100 | if (edir->elf.versioned != versioned_hidden) |
e81830c5 AM |
4101 | edir->elf.ref_dynamic |= eind->elf.ref_dynamic; |
4102 | edir->elf.ref_regular |= eind->elf.ref_regular; | |
4103 | edir->elf.ref_regular_nonweak |= eind->elf.ref_regular_nonweak; | |
4a7e5234 | 4104 | edir->elf.non_got_ref |= eind->elf.non_got_ref; |
e81830c5 AM |
4105 | edir->elf.needs_plt |= eind->elf.needs_plt; |
4106 | edir->elf.pointer_equality_needed |= eind->elf.pointer_equality_needed; | |
c79d6685 | 4107 | |
d311bc8b AM |
4108 | /* If we were called to copy over info for a weak sym, don't copy |
4109 | dyn_relocs, plt/got info, or dynindx. We used to copy dyn_relocs | |
4110 | in order to simplify readonly_dynrelocs and save a field in the | |
4111 | symbol hash entry, but that means dyn_relocs can't be used in any | |
4112 | tests about a specific symbol, or affect other symbol flags which | |
ab2477e1 | 4113 | are then tested. */ |
d311bc8b | 4114 | if (eind->elf.root.type != bfd_link_hash_indirect) |
ab2477e1 | 4115 | return; |
d311bc8b | 4116 | |
411e1bfb | 4117 | /* Copy over any dynamic relocs we may have on the indirect sym. */ |
190eb1dd | 4118 | if (ind->dyn_relocs != NULL) |
65f38f15 | 4119 | { |
190eb1dd | 4120 | if (dir->dyn_relocs != NULL) |
bbd7ec4a | 4121 | { |
1657026c AM |
4122 | struct ppc_dyn_relocs **pp; |
4123 | struct ppc_dyn_relocs *p; | |
bbd7ec4a | 4124 | |
fcfa13d2 | 4125 | /* Add reloc counts against the indirect sym to the direct sym |
bbd7ec4a | 4126 | list. Merge any entries against the same section. */ |
1657026c AM |
4127 | for (pp = (struct ppc_dyn_relocs **) &ind->dyn_relocs; |
4128 | (p = *pp) != NULL; | |
4129 | ) | |
bbd7ec4a | 4130 | { |
1657026c | 4131 | struct ppc_dyn_relocs *q; |
bbd7ec4a | 4132 | |
1657026c AM |
4133 | for (q = (struct ppc_dyn_relocs *) dir->dyn_relocs; |
4134 | q != NULL; | |
4135 | q = q->next) | |
bbd7ec4a AM |
4136 | if (q->sec == p->sec) |
4137 | { | |
bbd7ec4a | 4138 | q->count += p->count; |
1657026c AM |
4139 | q->pc_count += p->pc_count; |
4140 | q->rel_count += p->rel_count; | |
bbd7ec4a AM |
4141 | *pp = p->next; |
4142 | break; | |
4143 | } | |
4144 | if (q == NULL) | |
4145 | pp = &p->next; | |
4146 | } | |
1657026c | 4147 | *pp = (struct ppc_dyn_relocs *) dir->dyn_relocs; |
bbd7ec4a AM |
4148 | } |
4149 | ||
190eb1dd L |
4150 | dir->dyn_relocs = ind->dyn_relocs; |
4151 | ind->dyn_relocs = NULL; | |
65f38f15 | 4152 | } |
65f38f15 | 4153 | |
81848ca0 AM |
4154 | /* Copy over got entries that we may have already seen to the |
4155 | symbol which just became indirect. */ | |
411e1bfb AM |
4156 | if (eind->elf.got.glist != NULL) |
4157 | { | |
4158 | if (edir->elf.got.glist != NULL) | |
4159 | { | |
4160 | struct got_entry **entp; | |
4161 | struct got_entry *ent; | |
4162 | ||
4163 | for (entp = &eind->elf.got.glist; (ent = *entp) != NULL; ) | |
4164 | { | |
4165 | struct got_entry *dent; | |
4166 | ||
4167 | for (dent = edir->elf.got.glist; dent != NULL; dent = dent->next) | |
4168 | if (dent->addend == ent->addend | |
e717da7e | 4169 | && dent->owner == ent->owner |
411e1bfb AM |
4170 | && dent->tls_type == ent->tls_type) |
4171 | { | |
4172 | dent->got.refcount += ent->got.refcount; | |
4173 | *entp = ent->next; | |
4174 | break; | |
4175 | } | |
4176 | if (dent == NULL) | |
4177 | entp = &ent->next; | |
4178 | } | |
4179 | *entp = edir->elf.got.glist; | |
4180 | } | |
4181 | ||
4182 | edir->elf.got.glist = eind->elf.got.glist; | |
4183 | eind->elf.got.glist = NULL; | |
4184 | } | |
4185 | ||
4186 | /* And plt entries. */ | |
40d16e0b | 4187 | move_plt_plist (eind, edir); |
411e1bfb | 4188 | |
fcfa13d2 | 4189 | if (eind->elf.dynindx != -1) |
411e1bfb | 4190 | { |
fcfa13d2 AM |
4191 | if (edir->elf.dynindx != -1) |
4192 | _bfd_elf_strtab_delref (elf_hash_table (info)->dynstr, | |
4193 | edir->elf.dynstr_index); | |
411e1bfb AM |
4194 | edir->elf.dynindx = eind->elf.dynindx; |
4195 | edir->elf.dynstr_index = eind->elf.dynstr_index; | |
4196 | eind->elf.dynindx = -1; | |
4197 | eind->elf.dynstr_index = 0; | |
4198 | } | |
411e1bfb AM |
4199 | } |
4200 | ||
8387904d AM |
4201 | /* Find the function descriptor hash entry from the given function code |
4202 | hash entry FH. Link the entries via their OH fields. */ | |
4203 | ||
4204 | static struct ppc_link_hash_entry * | |
b31867b6 | 4205 | lookup_fdh (struct ppc_link_hash_entry *fh, struct ppc_link_hash_table *htab) |
8387904d AM |
4206 | { |
4207 | struct ppc_link_hash_entry *fdh = fh->oh; | |
4208 | ||
4209 | if (fdh == NULL) | |
4210 | { | |
4211 | const char *fd_name = fh->elf.root.root.string + 1; | |
4212 | ||
ed7007c1 | 4213 | fdh = ppc_elf_hash_entry (elf_link_hash_lookup (&htab->elf, fd_name, |
0a1b45a2 | 4214 | false, false, false)); |
b31867b6 AM |
4215 | if (fdh == NULL) |
4216 | return fdh; | |
4217 | ||
4218 | fdh->is_func_descriptor = 1; | |
4219 | fdh->oh = fh; | |
4220 | fh->is_func = 1; | |
4221 | fh->oh = fdh; | |
8387904d AM |
4222 | } |
4223 | ||
8c5b4e52 AM |
4224 | fdh = ppc_follow_link (fdh); |
4225 | fdh->is_func_descriptor = 1; | |
4226 | fdh->oh = fh; | |
4227 | return fdh; | |
8387904d AM |
4228 | } |
4229 | ||
8c5b4e52 | 4230 | /* Make a fake function descriptor sym for the undefined code sym FH. */ |
bb700d78 AM |
4231 | |
4232 | static struct ppc_link_hash_entry * | |
4233 | make_fdh (struct bfd_link_info *info, | |
908b32fc | 4234 | struct ppc_link_hash_entry *fh) |
bb700d78 | 4235 | { |
8c5b4e52 AM |
4236 | bfd *abfd = fh->elf.root.u.undef.abfd; |
4237 | struct bfd_link_hash_entry *bh = NULL; | |
bb700d78 | 4238 | struct ppc_link_hash_entry *fdh; |
8c5b4e52 AM |
4239 | flagword flags = (fh->elf.root.type == bfd_link_hash_undefweak |
4240 | ? BSF_WEAK | |
4241 | : BSF_GLOBAL); | |
4242 | ||
4243 | if (!_bfd_generic_link_add_one_symbol (info, abfd, | |
4244 | fh->elf.root.root.string + 1, | |
4245 | flags, bfd_und_section_ptr, 0, | |
0a1b45a2 | 4246 | NULL, false, false, &bh)) |
bb700d78 AM |
4247 | return NULL; |
4248 | ||
4249 | fdh = (struct ppc_link_hash_entry *) bh; | |
4250 | fdh->elf.non_elf = 0; | |
908b32fc AM |
4251 | fdh->fake = 1; |
4252 | fdh->is_func_descriptor = 1; | |
4253 | fdh->oh = fh; | |
4254 | fh->is_func = 1; | |
4255 | fh->oh = fdh; | |
bb700d78 AM |
4256 | return fdh; |
4257 | } | |
4258 | ||
8387904d AM |
4259 | /* Fix function descriptor symbols defined in .opd sections to be |
4260 | function type. */ | |
555cd476 | 4261 | |
0a1b45a2 | 4262 | static bool |
c16153ae | 4263 | ppc64_elf_add_symbol_hook (bfd *ibfd, |
e054468f | 4264 | struct bfd_link_info *info, |
555cd476 | 4265 | Elf_Internal_Sym *isym, |
6911b7dc | 4266 | const char **name, |
555cd476 AM |
4267 | flagword *flags ATTRIBUTE_UNUSED, |
4268 | asection **sec, | |
b53dfeb2 | 4269 | bfd_vma *value) |
555cd476 | 4270 | { |
b53dfeb2 | 4271 | if (*sec != NULL |
f1885d1e | 4272 | && strcmp ((*sec)->name, ".opd") == 0) |
b53dfeb2 AM |
4273 | { |
4274 | asection *code_sec; | |
4275 | ||
4276 | if (!(ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC | |
4277 | || ELF_ST_TYPE (isym->st_info) == STT_FUNC)) | |
4278 | isym->st_info = ELF_ST_INFO (ELF_ST_BIND (isym->st_info), STT_FUNC); | |
4279 | ||
4280 | /* If the symbol is a function defined in .opd, and the function | |
4281 | code is in a discarded group, let it appear to be undefined. */ | |
0e1862bb | 4282 | if (!bfd_link_relocatable (info) |
b53dfeb2 AM |
4283 | && (*sec)->reloc_count != 0 |
4284 | && opd_entry_value (*sec, *value, &code_sec, NULL, | |
0a1b45a2 | 4285 | false) != (bfd_vma) -1 |
b53dfeb2 AM |
4286 | && discarded_section (code_sec)) |
4287 | { | |
4288 | *sec = bfd_und_section_ptr; | |
4289 | isym->st_shndx = SHN_UNDEF; | |
4290 | } | |
4291 | } | |
dbd1e97e AM |
4292 | else if (*sec != NULL |
4293 | && strcmp ((*sec)->name, ".toc") == 0 | |
4294 | && ELF_ST_TYPE (isym->st_info) == STT_OBJECT) | |
4295 | { | |
4296 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
4297 | if (htab != NULL) | |
4298 | htab->params->object_in_toc = 1; | |
4299 | } | |
433817dd | 4300 | |
6911b7dc AM |
4301 | if ((STO_PPC64_LOCAL_MASK & isym->st_other) != 0) |
4302 | { | |
4303 | if (abiversion (ibfd) == 0) | |
4304 | set_abiversion (ibfd, 2); | |
4305 | else if (abiversion (ibfd) == 1) | |
4306 | { | |
cf97bcb0 AM |
4307 | _bfd_error_handler (_("symbol '%s' has invalid st_other" |
4308 | " for ABI version 1"), *name); | |
6911b7dc | 4309 | bfd_set_error (bfd_error_bad_value); |
0a1b45a2 | 4310 | return false; |
6911b7dc AM |
4311 | } |
4312 | } | |
4313 | ||
0a1b45a2 | 4314 | return true; |
555cd476 AM |
4315 | } |
4316 | ||
6911b7dc AM |
4317 | /* Merge non-visibility st_other attributes: local entry point. */ |
4318 | ||
4319 | static void | |
4320 | ppc64_elf_merge_symbol_attribute (struct elf_link_hash_entry *h, | |
5160d0f3 | 4321 | unsigned int st_other, |
0a1b45a2 AM |
4322 | bool definition, |
4323 | bool dynamic) | |
6911b7dc | 4324 | { |
f378ab09 | 4325 | if (definition && (!dynamic || !h->def_regular)) |
5160d0f3 | 4326 | h->other = ((st_other & ~ELF_ST_VISIBILITY (-1)) |
6911b7dc AM |
4327 | | ELF_ST_VISIBILITY (h->other)); |
4328 | } | |
4329 | ||
8c5b4e52 AM |
4330 | /* Hook called on merging a symbol. We use this to clear "fake" since |
4331 | we now have a real symbol. */ | |
4332 | ||
0a1b45a2 | 4333 | static bool |
8c5b4e52 | 4334 | ppc64_elf_merge_symbol (struct elf_link_hash_entry *h, |
8b5f1ed8 | 4335 | const Elf_Internal_Sym *isym, |
8c5b4e52 | 4336 | asection **psec ATTRIBUTE_UNUSED, |
0a1b45a2 AM |
4337 | bool newdef ATTRIBUTE_UNUSED, |
4338 | bool olddef ATTRIBUTE_UNUSED, | |
8c5b4e52 AM |
4339 | bfd *oldbfd ATTRIBUTE_UNUSED, |
4340 | const asection *oldsec ATTRIBUTE_UNUSED) | |
4341 | { | |
ed7007c1 | 4342 | ppc_elf_hash_entry (h)->fake = 0; |
8b5f1ed8 | 4343 | if ((STO_PPC64_LOCAL_MASK & isym->st_other) != 0) |
ed7007c1 | 4344 | ppc_elf_hash_entry (h)->non_zero_localentry = 1; |
0a1b45a2 | 4345 | return true; |
8c5b4e52 AM |
4346 | } |
4347 | ||
8387904d | 4348 | /* This function makes an old ABI object reference to ".bar" cause the |
908b32fc AM |
4349 | inclusion of a new ABI object archive that defines "bar". |
4350 | NAME is a symbol defined in an archive. Return a symbol in the hash | |
4351 | table that might be satisfied by the archive symbols. */ | |
8387904d | 4352 | |
b585e899 | 4353 | static struct bfd_link_hash_entry * |
8387904d AM |
4354 | ppc64_elf_archive_symbol_lookup (bfd *abfd, |
4355 | struct bfd_link_info *info, | |
4356 | const char *name) | |
4357 | { | |
b585e899 | 4358 | struct bfd_link_hash_entry *h; |
8387904d AM |
4359 | char *dot_name; |
4360 | size_t len; | |
4361 | ||
4362 | h = _bfd_elf_archive_symbol_lookup (abfd, info, name); | |
908b32fc | 4363 | if (h != NULL |
b585e899 | 4364 | && ppc_hash_table (info) != NULL |
908b32fc AM |
4365 | /* Don't return this sym if it is a fake function descriptor |
4366 | created by add_symbol_adjust. */ | |
b585e899 | 4367 | && !((struct ppc_link_hash_entry *) h)->fake) |
8387904d AM |
4368 | return h; |
4369 | ||
4370 | if (name[0] == '.') | |
4371 | return h; | |
4372 | ||
4373 | len = strlen (name); | |
4374 | dot_name = bfd_alloc (abfd, len + 2); | |
4375 | if (dot_name == NULL) | |
b585e899 | 4376 | return (struct bfd_link_hash_entry *) -1; |
8387904d AM |
4377 | dot_name[0] = '.'; |
4378 | memcpy (dot_name + 1, name, len + 1); | |
4379 | h = _bfd_elf_archive_symbol_lookup (abfd, info, dot_name); | |
4380 | bfd_release (abfd, dot_name); | |
a804e476 AM |
4381 | if (h != NULL) |
4382 | return h; | |
4383 | ||
4384 | if (strcmp (name, "__tls_get_addr_opt") == 0) | |
4385 | h = _bfd_elf_archive_symbol_lookup (abfd, info, "__tls_get_addr_desc"); | |
8387904d AM |
4386 | return h; |
4387 | } | |
4388 | ||
4389 | /* This function satisfies all old ABI object references to ".bar" if a | |
99877b66 AM |
4390 | new ABI object defines "bar". Well, at least, undefined dot symbols |
4391 | are made weak. This stops later archive searches from including an | |
4392 | object if we already have a function descriptor definition. It also | |
35b0ce59 AM |
4393 | prevents the linker complaining about undefined symbols. |
4394 | We also check and correct mismatched symbol visibility here. The | |
4395 | most restrictive visibility of the function descriptor and the | |
4396 | function entry symbol is used. */ | |
8387904d | 4397 | |
0a1b45a2 | 4398 | static bool |
b3fac117 | 4399 | add_symbol_adjust (struct ppc_link_hash_entry *eh, struct bfd_link_info *info) |
8387904d | 4400 | { |
8387904d AM |
4401 | struct ppc_link_hash_table *htab; |
4402 | struct ppc_link_hash_entry *fdh; | |
4403 | ||
b3fac117 AM |
4404 | if (eh->elf.root.type == bfd_link_hash_warning) |
4405 | eh = (struct ppc_link_hash_entry *) eh->elf.root.u.i.link; | |
8387904d | 4406 | |
8400d40d | 4407 | if (eh->elf.root.type == bfd_link_hash_indirect) |
0a1b45a2 | 4408 | return true; |
8400d40d | 4409 | |
b3fac117 AM |
4410 | if (eh->elf.root.root.string[0] != '.') |
4411 | abort (); | |
8387904d | 4412 | |
b3fac117 | 4413 | htab = ppc_hash_table (info); |
4dfe6ac6 | 4414 | if (htab == NULL) |
0a1b45a2 | 4415 | return false; |
4dfe6ac6 | 4416 | |
b31867b6 | 4417 | fdh = lookup_fdh (eh, htab); |
8c5b4e52 AM |
4418 | if (fdh == NULL |
4419 | && !bfd_link_relocatable (info) | |
4420 | && (eh->elf.root.type == bfd_link_hash_undefined | |
4421 | || eh->elf.root.type == bfd_link_hash_undefweak) | |
4422 | && eh->elf.ref_regular) | |
4423 | { | |
4424 | /* Make an undefined function descriptor sym, in order to | |
4425 | pull in an --as-needed shared lib. Archives are handled | |
4426 | elsewhere. */ | |
4427 | fdh = make_fdh (info, eh); | |
4428 | if (fdh == NULL) | |
0a1b45a2 | 4429 | return false; |
bb700d78 | 4430 | } |
8c5b4e52 AM |
4431 | |
4432 | if (fdh != NULL) | |
8387904d | 4433 | { |
35b0ce59 AM |
4434 | unsigned entry_vis = ELF_ST_VISIBILITY (eh->elf.other) - 1; |
4435 | unsigned descr_vis = ELF_ST_VISIBILITY (fdh->elf.other) - 1; | |
8c5b4e52 AM |
4436 | |
4437 | /* Make both descriptor and entry symbol have the most | |
4438 | constraining visibility of either symbol. */ | |
35b0ce59 AM |
4439 | if (entry_vis < descr_vis) |
4440 | fdh->elf.other += entry_vis - descr_vis; | |
4441 | else if (entry_vis > descr_vis) | |
4442 | eh->elf.other += descr_vis - entry_vis; | |
4443 | ||
8c5b4e52 AM |
4444 | /* Propagate reference flags from entry symbol to function |
4445 | descriptor symbol. */ | |
bc4e12de | 4446 | fdh->elf.root.non_ir_ref_regular |= eh->elf.root.non_ir_ref_regular; |
4070765b | 4447 | fdh->elf.root.non_ir_ref_dynamic |= eh->elf.root.non_ir_ref_dynamic; |
8c5b4e52 AM |
4448 | fdh->elf.ref_regular |= eh->elf.ref_regular; |
4449 | fdh->elf.ref_regular_nonweak |= eh->elf.ref_regular_nonweak; | |
4450 | ||
4451 | if (!fdh->elf.forced_local | |
4452 | && fdh->elf.dynindx == -1 | |
4453 | && fdh->elf.versioned != versioned_hidden | |
4454 | && (bfd_link_dll (info) | |
4455 | || fdh->elf.def_dynamic | |
4456 | || fdh->elf.ref_dynamic) | |
4457 | && (eh->elf.ref_regular | |
4458 | || eh->elf.def_regular)) | |
4459 | { | |
2cdcc330 | 4460 | if (!bfd_elf_link_record_dynamic_symbol (info, &fdh->elf)) |
0a1b45a2 | 4461 | return false; |
35b0ce59 | 4462 | } |
8387904d | 4463 | } |
99877b66 | 4464 | |
0a1b45a2 | 4465 | return true; |
8387904d AM |
4466 | } |
4467 | ||
f6c7c3e8 AM |
4468 | /* Set up opd section info and abiversion for IBFD, and process list |
4469 | of dot-symbols we made in link_hash_newfunc. */ | |
b3fac117 | 4470 | |
0a1b45a2 | 4471 | static bool |
f6c7c3e8 | 4472 | ppc64_elf_before_check_relocs (bfd *ibfd, struct bfd_link_info *info) |
8387904d | 4473 | { |
99877b66 | 4474 | struct ppc_link_hash_table *htab; |
b3fac117 | 4475 | struct ppc_link_hash_entry **p, *eh; |
459609d6 | 4476 | asection *opd = bfd_get_section_by_name (ibfd, ".opd"); |
433817dd | 4477 | |
459609d6 | 4478 | if (opd != NULL && opd->size != 0) |
b3fac117 | 4479 | { |
6313825c AM |
4480 | if (ppc64_elf_section_data (opd)->sec_type == sec_normal) |
4481 | ppc64_elf_section_data (opd)->sec_type = sec_opd; | |
4482 | else if (ppc64_elf_section_data (opd)->sec_type != sec_opd) | |
4483 | BFD_FAIL (); | |
b9399fcf | 4484 | |
459609d6 AM |
4485 | if (abiversion (ibfd) == 0) |
4486 | set_abiversion (ibfd, 1); | |
8a2058b5 | 4487 | else if (abiversion (ibfd) >= 2) |
f6c7c3e8 | 4488 | { |
695344c0 | 4489 | /* xgettext:c-format */ |
cf97bcb0 AM |
4490 | _bfd_error_handler (_("%pB .opd not allowed in ABI version %d"), |
4491 | ibfd, abiversion (ibfd)); | |
459609d6 | 4492 | bfd_set_error (bfd_error_bad_value); |
0a1b45a2 | 4493 | return false; |
f6c7c3e8 | 4494 | } |
b9399fcf | 4495 | } |
f6c7c3e8 | 4496 | |
b9399fcf AM |
4497 | if (is_ppc64_elf (info->output_bfd)) |
4498 | { | |
4499 | /* For input files without an explicit abiversion in e_flags | |
4500 | we should have flagged any with symbol st_other bits set | |
4501 | as ELFv1 and above flagged those with .opd as ELFv2. | |
4502 | Set the output abiversion if not yet set, and for any input | |
4503 | still ambiguous, take its abiversion from the output. | |
4504 | Differences in ABI are reported later. */ | |
4505 | if (abiversion (info->output_bfd) == 0) | |
4506 | set_abiversion (info->output_bfd, abiversion (ibfd)); | |
4507 | else if (abiversion (ibfd) == 0) | |
4508 | set_abiversion (ibfd, abiversion (info->output_bfd)); | |
b3fac117 AM |
4509 | } |
4510 | ||
459609d6 AM |
4511 | htab = ppc_hash_table (info); |
4512 | if (htab == NULL) | |
0a1b45a2 | 4513 | return true; |
459609d6 | 4514 | |
b9399fcf AM |
4515 | if (opd != NULL && opd->size != 0 |
4516 | && (ibfd->flags & DYNAMIC) == 0 | |
4517 | && (opd->flags & SEC_RELOC) != 0 | |
4518 | && opd->reloc_count != 0 | |
4519 | && !bfd_is_abs_section (opd->output_section) | |
4520 | && info->gc_sections) | |
4521 | { | |
4522 | /* Garbage collection needs some extra help with .opd sections. | |
4523 | We don't want to necessarily keep everything referenced by | |
4524 | relocs in .opd, as that would keep all functions. Instead, | |
4525 | if we reference an .opd symbol (a function descriptor), we | |
4526 | want to keep the function code symbol's section. This is | |
4527 | easy for global symbols, but for local syms we need to keep | |
4528 | information about the associated function section. */ | |
4529 | bfd_size_type amt; | |
4530 | asection **opd_sym_map; | |
4531 | Elf_Internal_Shdr *symtab_hdr; | |
4532 | Elf_Internal_Rela *relocs, *rel_end, *rel; | |
4533 | ||
4534 | amt = OPD_NDX (opd->size) * sizeof (*opd_sym_map); | |
4535 | opd_sym_map = bfd_zalloc (ibfd, amt); | |
4536 | if (opd_sym_map == NULL) | |
0a1b45a2 | 4537 | return false; |
b9399fcf AM |
4538 | ppc64_elf_section_data (opd)->u.opd.func_sec = opd_sym_map; |
4539 | relocs = _bfd_elf_link_read_relocs (ibfd, opd, NULL, NULL, | |
4540 | info->keep_memory); | |
4541 | if (relocs == NULL) | |
0a1b45a2 | 4542 | return false; |
b9399fcf AM |
4543 | symtab_hdr = &elf_symtab_hdr (ibfd); |
4544 | rel_end = relocs + opd->reloc_count - 1; | |
4545 | for (rel = relocs; rel < rel_end; rel++) | |
4546 | { | |
4547 | enum elf_ppc64_reloc_type r_type = ELF64_R_TYPE (rel->r_info); | |
4548 | unsigned long r_symndx = ELF64_R_SYM (rel->r_info); | |
4549 | ||
4550 | if (r_type == R_PPC64_ADDR64 | |
4551 | && ELF64_R_TYPE ((rel + 1)->r_info) == R_PPC64_TOC | |
4552 | && r_symndx < symtab_hdr->sh_info) | |
4553 | { | |
4554 | Elf_Internal_Sym *isym; | |
4555 | asection *s; | |
4556 | ||
f1dfbfdb L |
4557 | isym = bfd_sym_from_r_symndx (&htab->elf.sym_cache, ibfd, |
4558 | r_symndx); | |
b9399fcf AM |
4559 | if (isym == NULL) |
4560 | { | |
4561 | if (elf_section_data (opd)->relocs != relocs) | |
4562 | free (relocs); | |
0a1b45a2 | 4563 | return false; |
b9399fcf AM |
4564 | } |
4565 | ||
4566 | s = bfd_section_from_elf_index (ibfd, isym->st_shndx); | |
4567 | if (s != NULL && s != opd) | |
4568 | opd_sym_map[OPD_NDX (rel->r_offset)] = s; | |
4569 | } | |
4570 | } | |
4571 | if (elf_section_data (opd)->relocs != relocs) | |
4572 | free (relocs); | |
4573 | } | |
459609d6 AM |
4574 | |
4575 | p = &htab->dot_syms; | |
4576 | while ((eh = *p) != NULL) | |
4577 | { | |
4578 | *p = NULL; | |
4579 | if (&eh->elf == htab->elf.hgot) | |
4580 | ; | |
4581 | else if (htab->elf.hgot == NULL | |
4582 | && strcmp (eh->elf.root.root.string, ".TOC.") == 0) | |
4583 | htab->elf.hgot = &eh->elf; | |
8c5b4e52 AM |
4584 | else if (abiversion (ibfd) <= 1) |
4585 | { | |
4586 | htab->need_func_desc_adj = 1; | |
4587 | if (!add_symbol_adjust (eh, info)) | |
0a1b45a2 | 4588 | return false; |
8c5b4e52 | 4589 | } |
459609d6 AM |
4590 | p = &eh->u.next_dot_sym; |
4591 | } | |
0a1b45a2 | 4592 | return true; |
8387904d AM |
4593 | } |
4594 | ||
97fed1c9 JJ |
4595 | /* Undo hash table changes when an --as-needed input file is determined |
4596 | not to be needed. */ | |
4597 | ||
0a1b45a2 | 4598 | static bool |
e5034e59 AM |
4599 | ppc64_elf_notice_as_needed (bfd *ibfd, |
4600 | struct bfd_link_info *info, | |
4601 | enum notice_asneeded_action act) | |
97fed1c9 | 4602 | { |
e5034e59 AM |
4603 | if (act == notice_not_needed) |
4604 | { | |
4605 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
4dfe6ac6 | 4606 | |
e5034e59 | 4607 | if (htab == NULL) |
0a1b45a2 | 4608 | return false; |
4dfe6ac6 | 4609 | |
e5034e59 AM |
4610 | htab->dot_syms = NULL; |
4611 | } | |
4612 | return _bfd_elf_notice_as_needed (ibfd, info, act); | |
97fed1c9 JJ |
4613 | } |
4614 | ||
aa374f67 AM |
4615 | /* If --just-symbols against a final linked binary, then assume we need |
4616 | toc adjusting stubs when calling functions defined there. */ | |
4617 | ||
4618 | static void | |
4619 | ppc64_elf_link_just_syms (asection *sec, struct bfd_link_info *info) | |
4620 | { | |
4621 | if ((sec->flags & SEC_CODE) != 0 | |
4622 | && (sec->owner->flags & (EXEC_P | DYNAMIC)) != 0 | |
4623 | && is_ppc64_elf (sec->owner)) | |
4624 | { | |
2c3f079f AM |
4625 | if (abiversion (sec->owner) >= 2 |
4626 | || bfd_get_section_by_name (sec->owner, ".opd") != NULL) | |
aa374f67 AM |
4627 | sec->has_toc_reloc = 1; |
4628 | } | |
4629 | _bfd_elf_link_just_syms (sec, info); | |
4630 | } | |
4631 | ||
e054468f | 4632 | static struct plt_entry ** |
4ce794b7 AM |
4633 | update_local_sym_info (bfd *abfd, Elf_Internal_Shdr *symtab_hdr, |
4634 | unsigned long r_symndx, bfd_vma r_addend, int tls_type) | |
411e1bfb AM |
4635 | { |
4636 | struct got_entry **local_got_ents = elf_local_got_ents (abfd); | |
e054468f | 4637 | struct plt_entry **local_plt; |
f961d9dd | 4638 | unsigned char *local_got_tls_masks; |
411e1bfb AM |
4639 | |
4640 | if (local_got_ents == NULL) | |
4641 | { | |
4642 | bfd_size_type size = symtab_hdr->sh_info; | |
4643 | ||
e054468f AM |
4644 | size *= (sizeof (*local_got_ents) |
4645 | + sizeof (*local_plt) | |
4646 | + sizeof (*local_got_tls_masks)); | |
4ce794b7 | 4647 | local_got_ents = bfd_zalloc (abfd, size); |
411e1bfb | 4648 | if (local_got_ents == NULL) |
e054468f | 4649 | return NULL; |
411e1bfb AM |
4650 | elf_local_got_ents (abfd) = local_got_ents; |
4651 | } | |
4652 | ||
37da22e5 | 4653 | if ((tls_type & (NON_GOT | TLS_EXPLICIT)) == 0) |
411e1bfb AM |
4654 | { |
4655 | struct got_entry *ent; | |
4656 | ||
4657 | for (ent = local_got_ents[r_symndx]; ent != NULL; ent = ent->next) | |
e717da7e AM |
4658 | if (ent->addend == r_addend |
4659 | && ent->owner == abfd | |
4660 | && ent->tls_type == tls_type) | |
411e1bfb AM |
4661 | break; |
4662 | if (ent == NULL) | |
4663 | { | |
986f0783 | 4664 | size_t amt = sizeof (*ent); |
4ce794b7 | 4665 | ent = bfd_alloc (abfd, amt); |
411e1bfb | 4666 | if (ent == NULL) |
0a1b45a2 | 4667 | return false; |
411e1bfb AM |
4668 | ent->next = local_got_ents[r_symndx]; |
4669 | ent->addend = r_addend; | |
e717da7e | 4670 | ent->owner = abfd; |
411e1bfb | 4671 | ent->tls_type = tls_type; |
0a1b45a2 | 4672 | ent->is_indirect = false; |
411e1bfb AM |
4673 | ent->got.refcount = 0; |
4674 | local_got_ents[r_symndx] = ent; | |
4675 | } | |
4676 | ent->got.refcount += 1; | |
4677 | } | |
4678 | ||
e054468f | 4679 | local_plt = (struct plt_entry **) (local_got_ents + symtab_hdr->sh_info); |
f961d9dd | 4680 | local_got_tls_masks = (unsigned char *) (local_plt + symtab_hdr->sh_info); |
37da22e5 | 4681 | local_got_tls_masks[r_symndx] |= tls_type & 0xff; |
e054468f AM |
4682 | |
4683 | return local_plt + r_symndx; | |
65f38f15 AM |
4684 | } |
4685 | ||
0a1b45a2 | 4686 | static bool |
e054468f | 4687 | update_plt_info (bfd *abfd, struct plt_entry **plist, bfd_vma addend) |
1e2f5b6e | 4688 | { |
411e1bfb | 4689 | struct plt_entry *ent; |
1e2f5b6e | 4690 | |
e054468f | 4691 | for (ent = *plist; ent != NULL; ent = ent->next) |
411e1bfb AM |
4692 | if (ent->addend == addend) |
4693 | break; | |
4694 | if (ent == NULL) | |
1e2f5b6e | 4695 | { |
986f0783 | 4696 | size_t amt = sizeof (*ent); |
4ce794b7 | 4697 | ent = bfd_alloc (abfd, amt); |
411e1bfb | 4698 | if (ent == NULL) |
0a1b45a2 | 4699 | return false; |
e054468f | 4700 | ent->next = *plist; |
411e1bfb AM |
4701 | ent->addend = addend; |
4702 | ent->plt.refcount = 0; | |
e054468f | 4703 | *plist = ent; |
1e2f5b6e | 4704 | } |
411e1bfb | 4705 | ent->plt.refcount += 1; |
0a1b45a2 | 4706 | return true; |
1e2f5b6e AM |
4707 | } |
4708 | ||
0a1b45a2 | 4709 | static bool |
e054468f AM |
4710 | is_branch_reloc (enum elf_ppc64_reloc_type r_type) |
4711 | { | |
4712 | return (r_type == R_PPC64_REL24 | |
05d0e962 | 4713 | || r_type == R_PPC64_REL24_NOTOC |
7aba54da | 4714 | || r_type == R_PPC64_REL24_P9NOTOC |
e054468f AM |
4715 | || r_type == R_PPC64_REL14 |
4716 | || r_type == R_PPC64_REL14_BRTAKEN | |
4717 | || r_type == R_PPC64_REL14_BRNTAKEN | |
4718 | || r_type == R_PPC64_ADDR24 | |
4719 | || r_type == R_PPC64_ADDR14 | |
4720 | || r_type == R_PPC64_ADDR14_BRTAKEN | |
23cedd1d | 4721 | || r_type == R_PPC64_ADDR14_BRNTAKEN |
5663e321 AM |
4722 | || r_type == R_PPC64_PLTCALL |
4723 | || r_type == R_PPC64_PLTCALL_NOTOC); | |
23cedd1d AM |
4724 | } |
4725 | ||
4726 | /* Relocs on inline plt call sequence insns prior to the call. */ | |
4727 | ||
0a1b45a2 | 4728 | static bool |
23cedd1d AM |
4729 | is_plt_seq_reloc (enum elf_ppc64_reloc_type r_type) |
4730 | { | |
4731 | return (r_type == R_PPC64_PLT16_HA | |
4732 | || r_type == R_PPC64_PLT16_HI | |
4733 | || r_type == R_PPC64_PLT16_LO | |
4734 | || r_type == R_PPC64_PLT16_LO_DS | |
5663e321 AM |
4735 | || r_type == R_PPC64_PLT_PCREL34 |
4736 | || r_type == R_PPC64_PLT_PCREL34_NOTOC | |
4737 | || r_type == R_PPC64_PLTSEQ | |
4738 | || r_type == R_PPC64_PLTSEQ_NOTOC); | |
e054468f AM |
4739 | } |
4740 | ||
733ae98c AM |
4741 | /* Of relocs which might appear paired with TLSGD and TLSLD marker |
4742 | relocs, return true for those that operate on a dword. */ | |
4743 | ||
4744 | static bool | |
4745 | is_8byte_reloc (enum elf_ppc64_reloc_type r_type) | |
4746 | { | |
4747 | return (r_type == R_PPC64_PLT_PCREL34 | |
4748 | || r_type == R_PPC64_PLT_PCREL34_NOTOC | |
4749 | || r_type == R_PPC64_PLTCALL); | |
4750 | } | |
4751 | ||
4752 | /* Like bfd_reloc_offset_in_range but without a howto. Return true | |
4753 | iff a field of SIZE bytes at OFFSET is within SEC limits. */ | |
4754 | ||
4755 | static bool | |
4756 | offset_in_range (asection *sec, bfd_vma offset, size_t size) | |
4757 | { | |
4758 | return offset <= sec->size && size <= sec->size - offset; | |
4759 | } | |
4760 | ||
5bd4f169 | 4761 | /* Look through the relocs for a section during the first phase, and |
65f38f15 | 4762 | calculate needed space in the global offset table, procedure |
5d1634d7 | 4763 | linkage table, and dynamic reloc sections. */ |
5bd4f169 | 4764 | |
0a1b45a2 | 4765 | static bool |
4ce794b7 AM |
4766 | ppc64_elf_check_relocs (bfd *abfd, struct bfd_link_info *info, |
4767 | asection *sec, const Elf_Internal_Rela *relocs) | |
5bd4f169 | 4768 | { |
65f38f15 | 4769 | struct ppc_link_hash_table *htab; |
5bd4f169 | 4770 | Elf_Internal_Shdr *symtab_hdr; |
c7e2358a | 4771 | struct elf_link_hash_entry **sym_hashes; |
5bd4f169 AM |
4772 | const Elf_Internal_Rela *rel; |
4773 | const Elf_Internal_Rela *rel_end; | |
5bd4f169 | 4774 | asection *sreloc; |
3a71aa26 | 4775 | struct elf_link_hash_entry *tga, *dottga; |
0a1b45a2 | 4776 | bool is_opd; |
5bd4f169 | 4777 | |
0e1862bb | 4778 | if (bfd_link_relocatable (info)) |
0a1b45a2 | 4779 | return true; |
5bd4f169 | 4780 | |
0c8d6e5c | 4781 | BFD_ASSERT (is_ppc64_elf (abfd)); |
0ffa91dd | 4782 | |
65f38f15 | 4783 | htab = ppc_hash_table (info); |
4dfe6ac6 | 4784 | if (htab == NULL) |
0a1b45a2 | 4785 | return false; |
4dfe6ac6 | 4786 | |
3a71aa26 | 4787 | tga = elf_link_hash_lookup (&htab->elf, "__tls_get_addr", |
0a1b45a2 | 4788 | false, false, true); |
3a71aa26 | 4789 | dottga = elf_link_hash_lookup (&htab->elf, ".__tls_get_addr", |
0a1b45a2 | 4790 | false, false, true); |
0ffa91dd | 4791 | symtab_hdr = &elf_symtab_hdr (abfd); |
5bd4f169 | 4792 | sym_hashes = elf_sym_hashes (abfd); |
5bd4f169 | 4793 | sreloc = NULL; |
b9399fcf | 4794 | is_opd = ppc64_elf_section_data (sec)->sec_type == sec_opd; |
5bd4f169 AM |
4795 | rel_end = relocs + sec->reloc_count; |
4796 | for (rel = relocs; rel < rel_end; rel++) | |
4797 | { | |
4798 | unsigned long r_symndx; | |
4799 | struct elf_link_hash_entry *h; | |
3a3a4c1f | 4800 | Elf_Internal_Sym *isym; |
04c9666a | 4801 | enum elf_ppc64_reloc_type r_type; |
727fc41e | 4802 | int tls_type; |
7c8fe5c4 | 4803 | struct _ppc64_elf_section_data *ppc64_sec; |
cbf95972 | 4804 | struct plt_entry **ifunc, **plt_list; |
5bd4f169 AM |
4805 | |
4806 | r_symndx = ELF64_R_SYM (rel->r_info); | |
4807 | if (r_symndx < symtab_hdr->sh_info) | |
3a3a4c1f AM |
4808 | { |
4809 | h = NULL; | |
4810 | isym = bfd_sym_from_r_symndx (&htab->elf.sym_cache, abfd, r_symndx); | |
4811 | if (isym == NULL) | |
4812 | return false; | |
4813 | } | |
5bd4f169 | 4814 | else |
973a3492 | 4815 | { |
3a3a4c1f | 4816 | isym = NULL; |
973a3492 | 4817 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; |
b31867b6 | 4818 | h = elf_follow_link (h); |
1c865ab2 AM |
4819 | |
4820 | if (h == htab->elf.hgot) | |
4821 | sec->has_toc_reloc = 1; | |
973a3492 | 4822 | } |
5bd4f169 | 4823 | |
5663e321 AM |
4824 | r_type = ELF64_R_TYPE (rel->r_info); |
4825 | switch (r_type) | |
4826 | { | |
04bdff6a AM |
4827 | case R_PPC64_D34: |
4828 | case R_PPC64_D34_LO: | |
4829 | case R_PPC64_D34_HI30: | |
4830 | case R_PPC64_D34_HA30: | |
4831 | case R_PPC64_D28: | |
c213164a AM |
4832 | case R_PPC64_TPREL34: |
4833 | case R_PPC64_DTPREL34: | |
04bdff6a | 4834 | case R_PPC64_PCREL34: |
5663e321 | 4835 | case R_PPC64_GOT_PCREL34: |
87c69f97 AM |
4836 | case R_PPC64_GOT_TLSGD_PCREL34: |
4837 | case R_PPC64_GOT_TLSLD_PCREL34: | |
4838 | case R_PPC64_GOT_TPREL_PCREL34: | |
4839 | case R_PPC64_GOT_DTPREL_PCREL34: | |
5663e321 AM |
4840 | case R_PPC64_PLT_PCREL34: |
4841 | case R_PPC64_PLT_PCREL34_NOTOC: | |
04bdff6a | 4842 | case R_PPC64_PCREL28: |
e10a07b3 | 4843 | htab->has_power10_relocs = 1; |
133a1f60 AM |
4844 | break; |
4845 | default: | |
5663e321 AM |
4846 | break; |
4847 | } | |
903b777d AM |
4848 | |
4849 | switch (r_type) | |
4850 | { | |
4851 | case R_PPC64_PLT16_HA: | |
4852 | case R_PPC64_GOT_TLSLD16_HA: | |
4853 | case R_PPC64_GOT_TLSGD16_HA: | |
4854 | case R_PPC64_GOT_TPREL16_HA: | |
4855 | case R_PPC64_GOT_DTPREL16_HA: | |
4856 | case R_PPC64_GOT16_HA: | |
4857 | case R_PPC64_TOC16_HA: | |
4858 | case R_PPC64_PLT16_LO: | |
4859 | case R_PPC64_PLT16_LO_DS: | |
4860 | case R_PPC64_GOT_TLSLD16_LO: | |
4861 | case R_PPC64_GOT_TLSGD16_LO: | |
4862 | case R_PPC64_GOT_TPREL16_LO_DS: | |
4863 | case R_PPC64_GOT_DTPREL16_LO_DS: | |
4864 | case R_PPC64_GOT16_LO: | |
4865 | case R_PPC64_GOT16_LO_DS: | |
4866 | case R_PPC64_TOC16_LO: | |
4867 | case R_PPC64_TOC16_LO_DS: | |
4868 | case R_PPC64_GOT_PCREL34: | |
4869 | ppc64_elf_tdata (abfd)->has_optrel = 1; | |
4870 | ppc64_elf_section_data (sec)->has_optrel = 1; | |
4871 | break; | |
4872 | default: | |
4873 | break; | |
4874 | } | |
4875 | ||
f749f26e | 4876 | ifunc = NULL; |
25f23106 AM |
4877 | if (h != NULL) |
4878 | { | |
4879 | if (h->type == STT_GNU_IFUNC) | |
4880 | { | |
4881 | h->needs_plt = 1; | |
4882 | ifunc = &h->plt.plist; | |
4883 | } | |
4884 | } | |
4885 | else | |
4886 | { | |
25f23106 AM |
4887 | if (ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC) |
4888 | { | |
4889 | ifunc = update_local_sym_info (abfd, symtab_hdr, r_symndx, | |
133a1f60 | 4890 | rel->r_addend, |
37da22e5 | 4891 | NON_GOT | PLT_IFUNC); |
25f23106 | 4892 | if (ifunc == NULL) |
0a1b45a2 | 4893 | return false; |
25f23106 AM |
4894 | } |
4895 | } | |
727fc41e | 4896 | |
f749f26e | 4897 | tls_type = 0; |
a33d1f77 | 4898 | switch (r_type) |
5bd4f169 | 4899 | { |
727fc41e AM |
4900 | case R_PPC64_TLSGD: |
4901 | case R_PPC64_TLSLD: | |
4902 | /* These special tls relocs tie a call to __tls_get_addr with | |
4903 | its parameter symbol. */ | |
37da22e5 | 4904 | if (h != NULL) |
ed7007c1 | 4905 | ppc_elf_hash_entry (h)->tls_mask |= TLS_TLS | TLS_MARK; |
37da22e5 AM |
4906 | else |
4907 | if (!update_local_sym_info (abfd, symtab_hdr, r_symndx, | |
133a1f60 | 4908 | rel->r_addend, |
37da22e5 | 4909 | NON_GOT | TLS_TLS | TLS_MARK)) |
0a1b45a2 | 4910 | return false; |
37da22e5 | 4911 | sec->has_tls_reloc = 1; |
727fc41e AM |
4912 | break; |
4913 | ||
411e1bfb AM |
4914 | case R_PPC64_GOT_TLSLD16: |
4915 | case R_PPC64_GOT_TLSLD16_LO: | |
4916 | case R_PPC64_GOT_TLSLD16_HI: | |
4917 | case R_PPC64_GOT_TLSLD16_HA: | |
87c69f97 | 4918 | case R_PPC64_GOT_TLSLD_PCREL34: |
951fd09b | 4919 | tls_type = TLS_TLS | TLS_LD; |
411e1bfb AM |
4920 | goto dogottls; |
4921 | ||
4922 | case R_PPC64_GOT_TLSGD16: | |
4923 | case R_PPC64_GOT_TLSGD16_LO: | |
4924 | case R_PPC64_GOT_TLSGD16_HI: | |
4925 | case R_PPC64_GOT_TLSGD16_HA: | |
87c69f97 | 4926 | case R_PPC64_GOT_TLSGD_PCREL34: |
951fd09b | 4927 | tls_type = TLS_TLS | TLS_GD; |
411e1bfb AM |
4928 | goto dogottls; |
4929 | ||
4930 | case R_PPC64_GOT_TPREL16_DS: | |
4931 | case R_PPC64_GOT_TPREL16_LO_DS: | |
4932 | case R_PPC64_GOT_TPREL16_HI: | |
4933 | case R_PPC64_GOT_TPREL16_HA: | |
87c69f97 | 4934 | case R_PPC64_GOT_TPREL_PCREL34: |
7c8bbca5 | 4935 | if (bfd_link_dll (info)) |
411e1bfb AM |
4936 | info->flags |= DF_STATIC_TLS; |
4937 | tls_type = TLS_TLS | TLS_TPREL; | |
4938 | goto dogottls; | |
4939 | ||
4940 | case R_PPC64_GOT_DTPREL16_DS: | |
4941 | case R_PPC64_GOT_DTPREL16_LO_DS: | |
4942 | case R_PPC64_GOT_DTPREL16_HI: | |
4943 | case R_PPC64_GOT_DTPREL16_HA: | |
87c69f97 | 4944 | case R_PPC64_GOT_DTPREL_PCREL34: |
411e1bfb AM |
4945 | tls_type = TLS_TLS | TLS_DTPREL; |
4946 | dogottls: | |
4947 | sec->has_tls_reloc = 1; | |
066f4018 | 4948 | goto dogot; |
411e1bfb | 4949 | |
903b777d AM |
4950 | case R_PPC64_GOT16: |
4951 | case R_PPC64_GOT16_LO: | |
4952 | case R_PPC64_GOT16_HI: | |
65f38f15 | 4953 | case R_PPC64_GOT16_HA: |
903b777d | 4954 | case R_PPC64_GOT16_DS: |
066f4018 | 4955 | case R_PPC64_GOT16_LO_DS: |
4a421c53 | 4956 | case R_PPC64_GOT_PCREL34: |
066f4018 | 4957 | dogot: |
65f38f15 | 4958 | /* This symbol requires a global offset table entry. */ |
4c52953f | 4959 | sec->has_toc_reloc = 1; |
33c0ec9d AM |
4960 | if (r_type == R_PPC64_GOT_TLSLD16 |
4961 | || r_type == R_PPC64_GOT_TLSGD16 | |
4962 | || r_type == R_PPC64_GOT_TPREL16_DS | |
4963 | || r_type == R_PPC64_GOT_DTPREL16_DS | |
4964 | || r_type == R_PPC64_GOT16 | |
4965 | || r_type == R_PPC64_GOT16_DS) | |
4966 | { | |
4967 | htab->do_multi_toc = 1; | |
d77c8a4b | 4968 | ppc64_elf_tdata (abfd)->has_small_toc_reloc = 1; |
33c0ec9d AM |
4969 | } |
4970 | ||
e717da7e AM |
4971 | if (ppc64_elf_tdata (abfd)->got == NULL |
4972 | && !create_got_section (abfd, info)) | |
0a1b45a2 | 4973 | return false; |
5bd4f169 AM |
4974 | |
4975 | if (h != NULL) | |
4976 | { | |
411e1bfb AM |
4977 | struct ppc_link_hash_entry *eh; |
4978 | struct got_entry *ent; | |
65f38f15 | 4979 | |
ed7007c1 | 4980 | eh = ppc_elf_hash_entry (h); |
411e1bfb | 4981 | for (ent = eh->elf.got.glist; ent != NULL; ent = ent->next) |
133a1f60 | 4982 | if (ent->addend == rel->r_addend |
e717da7e | 4983 | && ent->owner == abfd |
411e1bfb AM |
4984 | && ent->tls_type == tls_type) |
4985 | break; | |
4986 | if (ent == NULL) | |
5bd4f169 | 4987 | { |
986f0783 | 4988 | size_t amt = sizeof (*ent); |
4ce794b7 | 4989 | ent = bfd_alloc (abfd, amt); |
411e1bfb | 4990 | if (ent == NULL) |
0a1b45a2 | 4991 | return false; |
411e1bfb | 4992 | ent->next = eh->elf.got.glist; |
133a1f60 | 4993 | ent->addend = rel->r_addend; |
e717da7e | 4994 | ent->owner = abfd; |
411e1bfb | 4995 | ent->tls_type = tls_type; |
0a1b45a2 | 4996 | ent->is_indirect = false; |
411e1bfb AM |
4997 | ent->got.refcount = 0; |
4998 | eh->elf.got.glist = ent; | |
5bd4f169 | 4999 | } |
411e1bfb | 5000 | ent->got.refcount += 1; |
e7b938ca | 5001 | eh->tls_mask |= tls_type; |
5bd4f169 | 5002 | } |
411e1bfb AM |
5003 | else |
5004 | /* This is a global offset table entry for a local symbol. */ | |
5005 | if (!update_local_sym_info (abfd, symtab_hdr, r_symndx, | |
133a1f60 | 5006 | rel->r_addend, tls_type)) |
0a1b45a2 | 5007 | return false; |
5bd4f169 AM |
5008 | break; |
5009 | ||
5bd4f169 | 5010 | case R_PPC64_PLT16_HA: |
65f38f15 AM |
5011 | case R_PPC64_PLT16_HI: |
5012 | case R_PPC64_PLT16_LO: | |
08be3224 | 5013 | case R_PPC64_PLT16_LO_DS: |
5663e321 AM |
5014 | case R_PPC64_PLT_PCREL34: |
5015 | case R_PPC64_PLT_PCREL34_NOTOC: | |
65f38f15 AM |
5016 | case R_PPC64_PLT32: |
5017 | case R_PPC64_PLT64: | |
cbf95972 AM |
5018 | /* This symbol requires a procedure linkage table entry. */ |
5019 | plt_list = ifunc; | |
5020 | if (h != NULL) | |
e054468f | 5021 | { |
e054468f AM |
5022 | h->needs_plt = 1; |
5023 | if (h->root.root.string[0] == '.' | |
5024 | && h->root.root.string[1] != '\0') | |
ed7007c1 AM |
5025 | ppc_elf_hash_entry (h)->is_func = 1; |
5026 | ppc_elf_hash_entry (h)->tls_mask |= PLT_KEEP; | |
cbf95972 AM |
5027 | plt_list = &h->plt.plist; |
5028 | } | |
5029 | if (plt_list == NULL) | |
2d7ad24e | 5030 | plt_list = update_local_sym_info (abfd, symtab_hdr, r_symndx, |
133a1f60 | 5031 | rel->r_addend, |
2d7ad24e | 5032 | NON_GOT | PLT_KEEP); |
133a1f60 | 5033 | if (!update_plt_info (abfd, plt_list, rel->r_addend)) |
0a1b45a2 | 5034 | return false; |
5bd4f169 AM |
5035 | break; |
5036 | ||
5037 | /* The following relocations don't need to propagate the | |
5038 | relocation if linking a shared object since they are | |
5039 | section relative. */ | |
5040 | case R_PPC64_SECTOFF: | |
5041 | case R_PPC64_SECTOFF_LO: | |
5042 | case R_PPC64_SECTOFF_HI: | |
5043 | case R_PPC64_SECTOFF_HA: | |
5044 | case R_PPC64_SECTOFF_DS: | |
5045 | case R_PPC64_SECTOFF_LO_DS: | |
411e1bfb AM |
5046 | case R_PPC64_DTPREL16: |
5047 | case R_PPC64_DTPREL16_LO: | |
5048 | case R_PPC64_DTPREL16_HI: | |
5049 | case R_PPC64_DTPREL16_HA: | |
5050 | case R_PPC64_DTPREL16_DS: | |
5051 | case R_PPC64_DTPREL16_LO_DS: | |
f9c6b907 AM |
5052 | case R_PPC64_DTPREL16_HIGH: |
5053 | case R_PPC64_DTPREL16_HIGHA: | |
411e1bfb AM |
5054 | case R_PPC64_DTPREL16_HIGHER: |
5055 | case R_PPC64_DTPREL16_HIGHERA: | |
5056 | case R_PPC64_DTPREL16_HIGHEST: | |
5057 | case R_PPC64_DTPREL16_HIGHESTA: | |
5bd4f169 AM |
5058 | break; |
5059 | ||
ad8e1ba5 | 5060 | /* Nor do these. */ |
25f23106 AM |
5061 | case R_PPC64_REL16: |
5062 | case R_PPC64_REL16_LO: | |
5063 | case R_PPC64_REL16_HI: | |
5064 | case R_PPC64_REL16_HA: | |
4a969973 AM |
5065 | case R_PPC64_REL16_HIGH: |
5066 | case R_PPC64_REL16_HIGHA: | |
5067 | case R_PPC64_REL16_HIGHER: | |
5068 | case R_PPC64_REL16_HIGHERA: | |
5069 | case R_PPC64_REL16_HIGHEST: | |
5070 | case R_PPC64_REL16_HIGHESTA: | |
5663e321 AM |
5071 | case R_PPC64_REL16_HIGHER34: |
5072 | case R_PPC64_REL16_HIGHERA34: | |
5073 | case R_PPC64_REL16_HIGHEST34: | |
5074 | case R_PPC64_REL16_HIGHESTA34: | |
a680de9a | 5075 | case R_PPC64_REL16DX_HA: |
25f23106 AM |
5076 | break; |
5077 | ||
45965137 AM |
5078 | /* Not supported as a dynamic relocation. */ |
5079 | case R_PPC64_ADDR64_LOCAL: | |
0e1862bb | 5080 | if (bfd_link_pic (info)) |
45965137 AM |
5081 | { |
5082 | if (!ppc64_elf_howto_table[R_PPC64_ADDR32]) | |
5083 | ppc_howto_init (); | |
695344c0 | 5084 | /* xgettext:c-format */ |
174d0a74 | 5085 | info->callbacks->einfo (_("%H: %s reloc unsupported " |
cf97bcb0 | 5086 | "in shared libraries and PIEs\n"), |
45965137 AM |
5087 | abfd, sec, rel->r_offset, |
5088 | ppc64_elf_howto_table[r_type]->name); | |
5089 | bfd_set_error (bfd_error_bad_value); | |
0a1b45a2 | 5090 | return false; |
45965137 AM |
5091 | } |
5092 | break; | |
5093 | ||
ad8e1ba5 | 5094 | case R_PPC64_TOC16: |
33c0ec9d AM |
5095 | case R_PPC64_TOC16_DS: |
5096 | htab->do_multi_toc = 1; | |
d77c8a4b | 5097 | ppc64_elf_tdata (abfd)->has_small_toc_reloc = 1; |
1a0670f3 | 5098 | /* Fall through. */ |
ad8e1ba5 AM |
5099 | case R_PPC64_TOC16_LO: |
5100 | case R_PPC64_TOC16_HI: | |
5101 | case R_PPC64_TOC16_HA: | |
ad8e1ba5 | 5102 | case R_PPC64_TOC16_LO_DS: |
4c52953f | 5103 | sec->has_toc_reloc = 1; |
ec73ddcd | 5104 | if (h != NULL && bfd_link_executable (info)) |
1bdd8fac AM |
5105 | { |
5106 | /* We may need a copy reloc. */ | |
5107 | h->non_got_ref = 1; | |
5108 | /* Strongly prefer a copy reloc over a dynamic reloc. | |
5109 | glibc ld.so as of 2019-08 will error out if one of | |
5110 | these relocations is emitted. */ | |
5111 | h->needs_copy = 1; | |
5112 | goto dodyn; | |
5113 | } | |
ad8e1ba5 AM |
5114 | break; |
5115 | ||
006589cf AM |
5116 | /* Marker reloc. */ |
5117 | case R_PPC64_ENTRY: | |
5118 | break; | |
5119 | ||
5bd4f169 AM |
5120 | /* This relocation describes the C++ object vtable hierarchy. |
5121 | Reconstruct it for later use during GC. */ | |
5122 | case R_PPC64_GNU_VTINHERIT: | |
c152c796 | 5123 | if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset)) |
0a1b45a2 | 5124 | return false; |
5bd4f169 AM |
5125 | break; |
5126 | ||
5127 | /* This relocation describes which C++ vtable entries are actually | |
5128 | used. Record for later use during GC. */ | |
5129 | case R_PPC64_GNU_VTENTRY: | |
a0ea3a14 | 5130 | if (!bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend)) |
0a1b45a2 | 5131 | return false; |
5bd4f169 AM |
5132 | break; |
5133 | ||
721956f4 AM |
5134 | case R_PPC64_REL14: |
5135 | case R_PPC64_REL14_BRTAKEN: | |
5136 | case R_PPC64_REL14_BRNTAKEN: | |
220c76dd AM |
5137 | { |
5138 | asection *dest = NULL; | |
5139 | ||
5140 | /* Heuristic: If jumping outside our section, chances are | |
5141 | we are going to need a stub. */ | |
5142 | if (h != NULL) | |
5143 | { | |
5144 | /* If the sym is weak it may be overridden later, so | |
5145 | don't assume we know where a weak sym lives. */ | |
5146 | if (h->root.type == bfd_link_hash_defined) | |
5147 | dest = h->root.u.def.section; | |
5148 | } | |
5149 | else | |
3a3a4c1f | 5150 | dest = bfd_section_from_elf_index (abfd, isym->st_shndx); |
87d72d41 | 5151 | |
220c76dd | 5152 | if (dest != sec) |
7c8fe5c4 | 5153 | ppc64_elf_section_data (sec)->has_14bit_branch = 1; |
220c76dd | 5154 | } |
3e04d765 AM |
5155 | goto rel24; |
5156 | ||
5157 | case R_PPC64_PLTCALL: | |
5663e321 | 5158 | case R_PPC64_PLTCALL_NOTOC: |
3e04d765 | 5159 | ppc64_elf_section_data (sec)->has_pltcall = 1; |
721956f4 AM |
5160 | /* Fall through. */ |
5161 | ||
5d1634d7 | 5162 | case R_PPC64_REL24: |
05d0e962 | 5163 | case R_PPC64_REL24_NOTOC: |
7aba54da | 5164 | case R_PPC64_REL24_P9NOTOC: |
3e04d765 | 5165 | rel24: |
cbf95972 AM |
5166 | plt_list = ifunc; |
5167 | if (h != NULL) | |
5d1634d7 | 5168 | { |
e054468f AM |
5169 | h->needs_plt = 1; |
5170 | if (h->root.root.string[0] == '.' | |
5171 | && h->root.root.string[1] != '\0') | |
ed7007c1 | 5172 | ppc_elf_hash_entry (h)->is_func = 1; |
cbf95972 | 5173 | |
3a71aa26 | 5174 | if (h == tga || h == dottga) |
cbf95972 AM |
5175 | { |
5176 | sec->has_tls_reloc = 1; | |
5177 | if (rel != relocs | |
5178 | && (ELF64_R_TYPE (rel[-1].r_info) == R_PPC64_TLSGD | |
5179 | || ELF64_R_TYPE (rel[-1].r_info) == R_PPC64_TLSLD)) | |
5180 | /* We have a new-style __tls_get_addr call with | |
5181 | a marker reloc. */ | |
5182 | ; | |
5183 | else | |
5184 | /* Mark this section as having an old-style call. */ | |
9737e8af | 5185 | sec->nomark_tls_get_addr = 1; |
cbf95972 AM |
5186 | } |
5187 | plt_list = &h->plt.plist; | |
411e1bfb | 5188 | } |
cbf95972 AM |
5189 | |
5190 | /* We may need a .plt entry if the function this reloc | |
5191 | refers to is in a shared lib. */ | |
5192 | if (plt_list | |
133a1f60 | 5193 | && !update_plt_info (abfd, plt_list, rel->r_addend)) |
0a1b45a2 | 5194 | return false; |
411e1bfb AM |
5195 | break; |
5196 | ||
cbf95972 AM |
5197 | case R_PPC64_ADDR14: |
5198 | case R_PPC64_ADDR14_BRNTAKEN: | |
5199 | case R_PPC64_ADDR14_BRTAKEN: | |
5200 | case R_PPC64_ADDR24: | |
5201 | goto dodyn; | |
5202 | ||
411e1bfb AM |
5203 | case R_PPC64_TPREL64: |
5204 | tls_type = TLS_EXPLICIT | TLS_TLS | TLS_TPREL; | |
7c8bbca5 | 5205 | if (bfd_link_dll (info)) |
411e1bfb AM |
5206 | info->flags |= DF_STATIC_TLS; |
5207 | goto dotlstoc; | |
5208 | ||
5209 | case R_PPC64_DTPMOD64: | |
5210 | if (rel + 1 < rel_end | |
5211 | && rel[1].r_info == ELF64_R_INFO (r_symndx, R_PPC64_DTPREL64) | |
5212 | && rel[1].r_offset == rel->r_offset + 8) | |
951fd09b | 5213 | tls_type = TLS_EXPLICIT | TLS_TLS | TLS_GD; |
411e1bfb | 5214 | else |
951fd09b | 5215 | tls_type = TLS_EXPLICIT | TLS_TLS | TLS_LD; |
411e1bfb AM |
5216 | goto dotlstoc; |
5217 | ||
5218 | case R_PPC64_DTPREL64: | |
5219 | tls_type = TLS_EXPLICIT | TLS_TLS | TLS_DTPREL; | |
5220 | if (rel != relocs | |
5221 | && rel[-1].r_info == ELF64_R_INFO (r_symndx, R_PPC64_DTPMOD64) | |
5222 | && rel[-1].r_offset == rel->r_offset - 8) | |
5223 | /* This is the second reloc of a dtpmod, dtprel pair. | |
5224 | Don't mark with TLS_DTPREL. */ | |
5225 | goto dodyn; | |
5226 | ||
5227 | dotlstoc: | |
5228 | sec->has_tls_reloc = 1; | |
5229 | if (h != NULL) | |
ed7007c1 | 5230 | ppc_elf_hash_entry (h)->tls_mask |= tls_type & 0xff; |
411e1bfb AM |
5231 | else |
5232 | if (!update_local_sym_info (abfd, symtab_hdr, r_symndx, | |
133a1f60 | 5233 | rel->r_addend, tls_type)) |
0a1b45a2 | 5234 | return false; |
411e1bfb | 5235 | |
7c8fe5c4 | 5236 | ppc64_sec = ppc64_elf_section_data (sec); |
6313825c | 5237 | if (ppc64_sec->sec_type == sec_normal) |
411e1bfb | 5238 | { |
3a71aa26 AM |
5239 | bfd_size_type amt; |
5240 | ||
e7b938ca | 5241 | /* One extra to simplify get_tls_mask. */ |
3a71aa26 AM |
5242 | amt = sec->size * sizeof (unsigned) / 8 + sizeof (unsigned); |
5243 | ppc64_sec->u.toc.symndx = bfd_zalloc (abfd, amt); | |
5244 | if (ppc64_sec->u.toc.symndx == NULL) | |
0a1b45a2 | 5245 | return false; |
3a71aa26 AM |
5246 | amt = sec->size * sizeof (bfd_vma) / 8; |
5247 | ppc64_sec->u.toc.add = bfd_zalloc (abfd, amt); | |
5248 | if (ppc64_sec->u.toc.add == NULL) | |
0a1b45a2 | 5249 | return false; |
7c8fe5c4 | 5250 | ppc64_sec->sec_type = sec_toc; |
411e1bfb | 5251 | } |
6313825c AM |
5252 | if (ppc64_sec->sec_type != sec_toc |
5253 | || rel->r_offset % 8 != 0) | |
5254 | { | |
5255 | info->callbacks->einfo (_("%H: %s reloc unsupported here\n"), | |
5256 | abfd, sec, rel->r_offset, | |
5257 | ppc64_elf_howto_table[r_type]->name); | |
5258 | bfd_set_error (bfd_error_bad_value); | |
5259 | return false; | |
5260 | } | |
3a71aa26 | 5261 | ppc64_sec->u.toc.symndx[rel->r_offset / 8] = r_symndx; |
133a1f60 | 5262 | ppc64_sec->u.toc.add[rel->r_offset / 8] = rel->r_addend; |
951fd09b AM |
5263 | |
5264 | /* Mark the second slot of a GD or LD entry. | |
5265 | -1 to indicate GD and -2 to indicate LD. */ | |
5266 | if (tls_type == (TLS_EXPLICIT | TLS_TLS | TLS_GD)) | |
3a71aa26 | 5267 | ppc64_sec->u.toc.symndx[rel->r_offset / 8 + 1] = -1; |
951fd09b | 5268 | else if (tls_type == (TLS_EXPLICIT | TLS_TLS | TLS_LD)) |
3a71aa26 | 5269 | ppc64_sec->u.toc.symndx[rel->r_offset / 8 + 1] = -2; |
411e1bfb AM |
5270 | goto dodyn; |
5271 | ||
411e1bfb AM |
5272 | case R_PPC64_TPREL16_HI: |
5273 | case R_PPC64_TPREL16_HA: | |
f9c6b907 AM |
5274 | case R_PPC64_TPREL16_HIGH: |
5275 | case R_PPC64_TPREL16_HIGHA: | |
411e1bfb AM |
5276 | case R_PPC64_TPREL16_HIGHER: |
5277 | case R_PPC64_TPREL16_HIGHERA: | |
5278 | case R_PPC64_TPREL16_HIGHEST: | |
5279 | case R_PPC64_TPREL16_HIGHESTA: | |
252dcdf4 AM |
5280 | sec->has_tls_reloc = 1; |
5281 | /* Fall through. */ | |
c213164a | 5282 | case R_PPC64_TPREL34: |
252dcdf4 AM |
5283 | case R_PPC64_TPREL16: |
5284 | case R_PPC64_TPREL16_DS: | |
5285 | case R_PPC64_TPREL16_LO: | |
5286 | case R_PPC64_TPREL16_LO_DS: | |
7c8bbca5 AM |
5287 | if (bfd_link_dll (info)) |
5288 | info->flags |= DF_STATIC_TLS; | |
5289 | goto dodyn; | |
5d1634d7 | 5290 | |
e86ce104 | 5291 | case R_PPC64_ADDR64: |
b9399fcf | 5292 | if (is_opd |
1e2f5b6e | 5293 | && rel + 1 < rel_end |
4ce794b7 | 5294 | && ELF64_R_TYPE ((rel + 1)->r_info) == R_PPC64_TOC) |
1e2f5b6e | 5295 | { |
8387904d | 5296 | if (h != NULL) |
ed7007c1 | 5297 | ppc_elf_hash_entry (h)->is_func = 1; |
1e2f5b6e | 5298 | } |
e86ce104 AM |
5299 | /* Fall through. */ |
5300 | ||
65f38f15 AM |
5301 | case R_PPC64_ADDR16: |
5302 | case R_PPC64_ADDR16_DS: | |
5303 | case R_PPC64_ADDR16_HA: | |
5304 | case R_PPC64_ADDR16_HI: | |
f9c6b907 AM |
5305 | case R_PPC64_ADDR16_HIGH: |
5306 | case R_PPC64_ADDR16_HIGHA: | |
65f38f15 AM |
5307 | case R_PPC64_ADDR16_HIGHER: |
5308 | case R_PPC64_ADDR16_HIGHERA: | |
5309 | case R_PPC64_ADDR16_HIGHEST: | |
5310 | case R_PPC64_ADDR16_HIGHESTA: | |
5311 | case R_PPC64_ADDR16_LO: | |
5312 | case R_PPC64_ADDR16_LO_DS: | |
5663e321 AM |
5313 | case R_PPC64_D34: |
5314 | case R_PPC64_D34_LO: | |
5315 | case R_PPC64_D34_HI30: | |
5316 | case R_PPC64_D34_HA30: | |
5317 | case R_PPC64_ADDR16_HIGHER34: | |
5318 | case R_PPC64_ADDR16_HIGHERA34: | |
5319 | case R_PPC64_ADDR16_HIGHEST34: | |
5320 | case R_PPC64_ADDR16_HIGHESTA34: | |
5321 | case R_PPC64_D28: | |
0e1862bb | 5322 | if (h != NULL && !bfd_link_pic (info) && abiversion (abfd) != 1 |
a345bc8d AM |
5323 | && rel->r_addend == 0) |
5324 | { | |
5325 | /* We may need a .plt entry if this reloc refers to a | |
5326 | function in a shared lib. */ | |
5663e321 | 5327 | if (!update_plt_info (abfd, &h->plt.plist, 0)) |
0a1b45a2 | 5328 | return false; |
a345bc8d AM |
5329 | h->pointer_equality_needed = 1; |
5330 | } | |
5331 | /* Fall through. */ | |
5332 | ||
5333 | case R_PPC64_REL30: | |
5334 | case R_PPC64_REL32: | |
5335 | case R_PPC64_REL64: | |
65f38f15 | 5336 | case R_PPC64_ADDR32: |
65f38f15 AM |
5337 | case R_PPC64_UADDR16: |
5338 | case R_PPC64_UADDR32: | |
5339 | case R_PPC64_UADDR64: | |
5bd4f169 | 5340 | case R_PPC64_TOC: |
ec73ddcd | 5341 | if (h != NULL && bfd_link_executable (info)) |
81848ca0 | 5342 | /* We may need a copy reloc. */ |
f5385ebf | 5343 | h->non_got_ref = 1; |
81848ca0 | 5344 | |
41bd81ab | 5345 | /* Don't propagate .opd relocs. */ |
b9399fcf | 5346 | if (NO_OPD_RELOCS && is_opd) |
e86ce104 | 5347 | break; |
e86ce104 | 5348 | |
c99d782d AM |
5349 | /* Set up information for symbols that might need dynamic |
5350 | relocations. At this point in linking we have read all | |
5351 | the input files and resolved most symbols, but have not | |
5352 | yet decided whether symbols are dynamic or finalized | |
5353 | symbol flags. In some cases we might be setting dynamic | |
5354 | reloc info for symbols that do not end up needing such. | |
5355 | That's OK, adjust_dynamic_symbol and allocate_dynrelocs | |
5356 | work together with this code. */ | |
411e1bfb | 5357 | dodyn: |
ec73ddcd | 5358 | if ((h != NULL |
c99d782d | 5359 | && !SYMBOL_REFERENCES_LOCAL (info, h)) |
ec73ddcd | 5360 | || (bfd_link_pic (info) |
3a3a4c1f AM |
5361 | && (h != NULL |
5362 | ? !bfd_is_abs_symbol (&h->root) | |
5363 | : isym->st_shndx != SHN_ABS) | |
ec73ddcd | 5364 | && must_be_dyn_reloc (info, r_type)) |
0e1862bb | 5365 | || (!bfd_link_pic (info) |
25f23106 | 5366 | && ifunc != NULL)) |
5bd4f169 | 5367 | { |
65f38f15 AM |
5368 | /* We must copy these reloc types into the output file. |
5369 | Create a reloc section in dynobj and make room for | |
5370 | this reloc. */ | |
5bd4f169 AM |
5371 | if (sreloc == NULL) |
5372 | { | |
83bac4b0 | 5373 | sreloc = _bfd_elf_make_dynamic_reloc_section |
0a1b45a2 | 5374 | (sec, htab->elf.dynobj, 3, abfd, /*rela?*/ true); |
65f38f15 | 5375 | |
5bd4f169 | 5376 | if (sreloc == NULL) |
0a1b45a2 | 5377 | return false; |
5bd4f169 AM |
5378 | } |
5379 | ||
65f38f15 AM |
5380 | /* If this is a global symbol, we count the number of |
5381 | relocations we need for this symbol. */ | |
5382 | if (h != NULL) | |
5383 | { | |
1657026c AM |
5384 | struct ppc_dyn_relocs *p; |
5385 | struct ppc_dyn_relocs **head; | |
19e08130 | 5386 | |
1657026c | 5387 | head = (struct ppc_dyn_relocs **) &h->dyn_relocs; |
19e08130 AM |
5388 | p = *head; |
5389 | if (p == NULL || p->sec != sec) | |
5390 | { | |
5391 | p = bfd_alloc (htab->elf.dynobj, sizeof *p); | |
5392 | if (p == NULL) | |
0a1b45a2 | 5393 | return false; |
19e08130 AM |
5394 | p->next = *head; |
5395 | *head = p; | |
5396 | p->sec = sec; | |
5397 | p->count = 0; | |
5398 | p->pc_count = 0; | |
1657026c | 5399 | p->rel_count = 0; |
19e08130 AM |
5400 | } |
5401 | p->count += 1; | |
5402 | if (!must_be_dyn_reloc (info, r_type)) | |
5403 | p->pc_count += 1; | |
1657026c AM |
5404 | if ((r_type == R_PPC64_ADDR64 || r_type == R_PPC64_TOC) |
5405 | && rel->r_offset % 2 == 0 | |
8ffb6df2 | 5406 | && sec->alignment_power != 0) |
1657026c | 5407 | p->rel_count += 1; |
65f38f15 AM |
5408 | } |
5409 | else | |
5410 | { | |
3a3a4c1f | 5411 | /* Track dynamic relocs needed for local syms too. */ |
1657026c AM |
5412 | struct ppc_local_dyn_relocs *p; |
5413 | struct ppc_local_dyn_relocs **head; | |
0a1b45a2 | 5414 | bool is_ifunc; |
ec338859 | 5415 | asection *s; |
6edfbbad | 5416 | void *vpp; |
ec338859 | 5417 | |
87d72d41 AM |
5418 | s = bfd_section_from_elf_index (abfd, isym->st_shndx); |
5419 | if (s == NULL) | |
5420 | s = sec; | |
5421 | ||
6edfbbad | 5422 | vpp = &elf_section_data (s)->local_dynrel; |
1657026c | 5423 | head = (struct ppc_local_dyn_relocs **) vpp; |
19e08130 AM |
5424 | is_ifunc = ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC; |
5425 | p = *head; | |
5426 | if (p != NULL && p->sec == sec && p->ifunc != is_ifunc) | |
5427 | p = p->next; | |
5428 | if (p == NULL || p->sec != sec || p->ifunc != is_ifunc) | |
5429 | { | |
5430 | p = bfd_alloc (htab->elf.dynobj, sizeof *p); | |
5431 | if (p == NULL) | |
0a1b45a2 | 5432 | return false; |
19e08130 AM |
5433 | p->next = *head; |
5434 | *head = p; | |
5435 | p->sec = sec; | |
19e08130 | 5436 | p->count = 0; |
1657026c AM |
5437 | p->rel_count = 0; |
5438 | p->ifunc = is_ifunc; | |
19e08130 AM |
5439 | } |
5440 | p->count += 1; | |
1657026c AM |
5441 | if ((r_type == R_PPC64_ADDR64 || r_type == R_PPC64_TOC) |
5442 | && rel->r_offset % 2 == 0 | |
8ffb6df2 | 5443 | && sec->alignment_power != 0) |
1657026c | 5444 | p->rel_count += 1; |
ec338859 | 5445 | } |
65f38f15 | 5446 | } |
5bd4f169 | 5447 | break; |
65f38f15 AM |
5448 | |
5449 | default: | |
96e0dda4 | 5450 | break; |
5bd4f169 AM |
5451 | } |
5452 | } | |
5453 | ||
0a1b45a2 | 5454 | return true; |
5bd4f169 AM |
5455 | } |
5456 | ||
ee67d69a AM |
5457 | /* Merge backend specific data from an object file to the output |
5458 | object file when linking. */ | |
5459 | ||
0a1b45a2 | 5460 | static bool |
50e03d47 | 5461 | ppc64_elf_merge_private_bfd_data (bfd *ibfd, struct bfd_link_info *info) |
ee67d69a | 5462 | { |
50e03d47 | 5463 | bfd *obfd = info->output_bfd; |
ee67d69a AM |
5464 | unsigned long iflags, oflags; |
5465 | ||
5466 | if ((ibfd->flags & BFD_LINKER_CREATED) != 0) | |
0a1b45a2 | 5467 | return true; |
ee67d69a AM |
5468 | |
5469 | if (!is_ppc64_elf (ibfd) || !is_ppc64_elf (obfd)) | |
0a1b45a2 | 5470 | return true; |
ee67d69a | 5471 | |
50e03d47 | 5472 | if (!_bfd_generic_verify_endian_match (ibfd, info)) |
0a1b45a2 | 5473 | return false; |
ee67d69a AM |
5474 | |
5475 | iflags = elf_elfheader (ibfd)->e_flags; | |
5476 | oflags = elf_elfheader (obfd)->e_flags; | |
5477 | ||
f6c7c3e8 | 5478 | if (iflags & ~EF_PPC64_ABI) |
ee67d69a | 5479 | { |
4eca0228 | 5480 | _bfd_error_handler |
695344c0 | 5481 | /* xgettext:c-format */ |
871b3ab2 | 5482 | (_("%pB uses unknown e_flags 0x%lx"), ibfd, iflags); |
ee67d69a | 5483 | bfd_set_error (bfd_error_bad_value); |
0a1b45a2 | 5484 | return false; |
ee67d69a | 5485 | } |
f6c7c3e8 | 5486 | else if (iflags != oflags && iflags != 0) |
ee67d69a | 5487 | { |
4eca0228 | 5488 | _bfd_error_handler |
695344c0 | 5489 | /* xgettext:c-format */ |
871b3ab2 | 5490 | (_("%pB: ABI version %ld is not compatible with ABI version %ld output"), |
ee67d69a AM |
5491 | ibfd, iflags, oflags); |
5492 | bfd_set_error (bfd_error_bad_value); | |
0a1b45a2 | 5493 | return false; |
ee67d69a AM |
5494 | } |
5495 | ||
4a91d0ba | 5496 | if (!_bfd_elf_ppc_merge_fp_attributes (ibfd, info)) |
0a1b45a2 | 5497 | return false; |
005d79fd | 5498 | |
ee67d69a | 5499 | /* Merge Tag_compatibility attributes and any common GNU ones. */ |
8d2c8c3d | 5500 | return _bfd_elf_merge_object_attributes (ibfd, info); |
ee67d69a AM |
5501 | } |
5502 | ||
0a1b45a2 | 5503 | static bool |
ee67d69a AM |
5504 | ppc64_elf_print_private_bfd_data (bfd *abfd, void *ptr) |
5505 | { | |
5506 | /* Print normal ELF private data. */ | |
5507 | _bfd_elf_print_private_bfd_data (abfd, ptr); | |
5508 | ||
5509 | if (elf_elfheader (abfd)->e_flags != 0) | |
5510 | { | |
5511 | FILE *file = ptr; | |
5512 | ||
ee67d69a AM |
5513 | fprintf (file, _("private flags = 0x%lx:"), |
5514 | elf_elfheader (abfd)->e_flags); | |
5515 | ||
5516 | if ((elf_elfheader (abfd)->e_flags & EF_PPC64_ABI) != 0) | |
5517 | fprintf (file, _(" [abiv%ld]"), | |
5518 | elf_elfheader (abfd)->e_flags & EF_PPC64_ABI); | |
5519 | fputc ('\n', file); | |
5520 | } | |
5521 | ||
0a1b45a2 | 5522 | return true; |
ee67d69a AM |
5523 | } |
5524 | ||
8387904d | 5525 | /* OFFSET in OPD_SEC specifies a function descriptor. Return the address |
b53dfeb2 AM |
5526 | of the code entry point, and its section, which must be in the same |
5527 | object as OPD_SEC. Returns (bfd_vma) -1 on error. */ | |
8387904d AM |
5528 | |
5529 | static bfd_vma | |
5530 | opd_entry_value (asection *opd_sec, | |
5531 | bfd_vma offset, | |
5532 | asection **code_sec, | |
aef36ac1 | 5533 | bfd_vma *code_off, |
0a1b45a2 | 5534 | bool in_code_sec) |
8387904d AM |
5535 | { |
5536 | bfd *opd_bfd = opd_sec->owner; | |
8860955f | 5537 | Elf_Internal_Rela *relocs; |
8387904d | 5538 | Elf_Internal_Rela *lo, *hi, *look; |
645ea6a9 | 5539 | bfd_vma val; |
8387904d | 5540 | |
6313825c AM |
5541 | if (!is_ppc64_elf (opd_bfd)) |
5542 | return (bfd_vma) -1; | |
5543 | ||
5544 | if (ppc64_elf_section_data (opd_sec)->sec_type == sec_normal) | |
5545 | ppc64_elf_section_data (opd_sec)->sec_type = sec_opd; | |
5546 | else if (ppc64_elf_section_data (opd_sec)->sec_type != sec_opd) | |
5547 | return (bfd_vma) -1; | |
5548 | ||
9f296da3 AM |
5549 | /* No relocs implies we are linking a --just-symbols object, or looking |
5550 | at a final linked executable with addr2line or somesuch. */ | |
4b85d634 AM |
5551 | if (opd_sec->reloc_count == 0) |
5552 | { | |
6313825c | 5553 | bfd_byte *contents = ppc64_elf_section_data (opd_sec)->u.opd.u.contents; |
3b36f7e6 | 5554 | |
729eabd5 AM |
5555 | if (contents == NULL) |
5556 | { | |
81ff113f AM |
5557 | if ((opd_sec->flags & SEC_HAS_CONTENTS) == 0 |
5558 | || !bfd_malloc_and_get_section (opd_bfd, opd_sec, &contents)) | |
729eabd5 | 5559 | return (bfd_vma) -1; |
6313825c | 5560 | ppc64_elf_section_data (opd_sec)->u.opd.u.contents = contents; |
729eabd5 | 5561 | } |
ee1e4ede | 5562 | |
dbb3fbbb | 5563 | /* PR 17512: file: 64b9dfbb. */ |
451dfd38 | 5564 | if (offset + 7 >= opd_sec->size || offset + 7 < offset) |
dbb3fbbb NC |
5565 | return (bfd_vma) -1; |
5566 | ||
729eabd5 | 5567 | val = bfd_get_64 (opd_bfd, contents + offset); |
aef36ac1 AM |
5568 | if (code_sec != NULL) |
5569 | { | |
5570 | asection *sec, *likely = NULL; | |
ee1e4ede | 5571 | |
aef36ac1 | 5572 | if (in_code_sec) |
4b85d634 | 5573 | { |
aef36ac1 AM |
5574 | sec = *code_sec; |
5575 | if (sec->vma <= val | |
5576 | && val < sec->vma + sec->size) | |
5577 | likely = sec; | |
5578 | else | |
5579 | val = -1; | |
5580 | } | |
5581 | else | |
5582 | for (sec = opd_bfd->sections; sec != NULL; sec = sec->next) | |
5583 | if (sec->vma <= val | |
5584 | && (sec->flags & SEC_LOAD) != 0 | |
5585 | && (sec->flags & SEC_ALLOC) != 0) | |
5586 | likely = sec; | |
5587 | if (likely != NULL) | |
5588 | { | |
5589 | *code_sec = likely; | |
5590 | if (code_off != NULL) | |
5591 | *code_off = val - likely->vma; | |
4b85d634 AM |
5592 | } |
5593 | } | |
aef36ac1 | 5594 | return val; |
4b85d634 AM |
5595 | } |
5596 | ||
6313825c | 5597 | relocs = ppc64_elf_section_data (opd_sec)->u.opd.u.relocs; |
8860955f | 5598 | if (relocs == NULL) |
0a1b45a2 | 5599 | relocs = _bfd_elf_link_read_relocs (opd_bfd, opd_sec, NULL, NULL, true); |
877a8638 NC |
5600 | /* PR 17512: file: df8e1fd6. */ |
5601 | if (relocs == NULL) | |
5602 | return (bfd_vma) -1; | |
645ea6a9 | 5603 | |
8387904d | 5604 | /* Go find the opd reloc at the sym address. */ |
8860955f | 5605 | lo = relocs; |
8387904d | 5606 | hi = lo + opd_sec->reloc_count - 1; /* ignore last reloc */ |
645ea6a9 | 5607 | val = (bfd_vma) -1; |
8387904d AM |
5608 | while (lo < hi) |
5609 | { | |
5610 | look = lo + (hi - lo) / 2; | |
5611 | if (look->r_offset < offset) | |
5612 | lo = look + 1; | |
5613 | else if (look->r_offset > offset) | |
5614 | hi = look; | |
5615 | else | |
5616 | { | |
0ffa91dd NC |
5617 | Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (opd_bfd); |
5618 | ||
8387904d AM |
5619 | if (ELF64_R_TYPE (look->r_info) == R_PPC64_ADDR64 |
5620 | && ELF64_R_TYPE ((look + 1)->r_info) == R_PPC64_TOC) | |
5621 | { | |
5622 | unsigned long symndx = ELF64_R_SYM (look->r_info); | |
b53dfeb2 | 5623 | asection *sec = NULL; |
8387904d | 5624 | |
b53dfeb2 AM |
5625 | if (symndx >= symtab_hdr->sh_info |
5626 | && elf_sym_hashes (opd_bfd) != NULL) | |
8387904d AM |
5627 | { |
5628 | struct elf_link_hash_entry **sym_hashes; | |
5629 | struct elf_link_hash_entry *rh; | |
5630 | ||
5631 | sym_hashes = elf_sym_hashes (opd_bfd); | |
5632 | rh = sym_hashes[symndx - symtab_hdr->sh_info]; | |
128205bb AM |
5633 | if (rh != NULL) |
5634 | { | |
5635 | rh = elf_follow_link (rh); | |
bb854a36 AM |
5636 | if (rh->root.type != bfd_link_hash_defined |
5637 | && rh->root.type != bfd_link_hash_defweak) | |
5638 | break; | |
5639 | if (rh->root.u.def.section->owner == opd_bfd) | |
b53dfeb2 | 5640 | { |
bb854a36 AM |
5641 | val = rh->root.u.def.value; |
5642 | sec = rh->root.u.def.section; | |
b53dfeb2 AM |
5643 | } |
5644 | } | |
5645 | } | |
5646 | ||
5647 | if (sec == NULL) | |
5648 | { | |
5649 | Elf_Internal_Sym *sym; | |
5650 | ||
5651 | if (symndx < symtab_hdr->sh_info) | |
5652 | { | |
5653 | sym = (Elf_Internal_Sym *) symtab_hdr->contents; | |
5654 | if (sym == NULL) | |
5655 | { | |
5656 | size_t symcnt = symtab_hdr->sh_info; | |
5657 | sym = bfd_elf_get_elf_syms (opd_bfd, symtab_hdr, | |
5658 | symcnt, 0, | |
5659 | NULL, NULL, NULL); | |
5660 | if (sym == NULL) | |
5661 | break; | |
5662 | symtab_hdr->contents = (bfd_byte *) sym; | |
5663 | } | |
5664 | sym += symndx; | |
128205bb AM |
5665 | } |
5666 | else | |
5667 | { | |
b53dfeb2 AM |
5668 | sym = bfd_elf_get_elf_syms (opd_bfd, symtab_hdr, |
5669 | 1, symndx, | |
5670 | NULL, NULL, NULL); | |
128205bb AM |
5671 | if (sym == NULL) |
5672 | break; | |
128205bb | 5673 | } |
b53dfeb2 AM |
5674 | sec = bfd_section_from_elf_index (opd_bfd, sym->st_shndx); |
5675 | if (sec == NULL) | |
5676 | break; | |
5677 | BFD_ASSERT ((sec->flags & SEC_MERGE) == 0); | |
5678 | val = sym->st_value; | |
8387904d | 5679 | } |
b53dfeb2 | 5680 | |
8387904d AM |
5681 | val += look->r_addend; |
5682 | if (code_off != NULL) | |
5683 | *code_off = val; | |
5684 | if (code_sec != NULL) | |
aef36ac1 AM |
5685 | { |
5686 | if (in_code_sec && *code_sec != sec) | |
5687 | return -1; | |
5688 | else | |
5689 | *code_sec = sec; | |
5690 | } | |
b53dfeb2 | 5691 | if (sec->output_section != NULL) |
8387904d | 5692 | val += sec->output_section->vma + sec->output_offset; |
8387904d AM |
5693 | } |
5694 | break; | |
5695 | } | |
5696 | } | |
645ea6a9 | 5697 | |
645ea6a9 | 5698 | return val; |
8387904d AM |
5699 | } |
5700 | ||
aef36ac1 AM |
5701 | /* If the ELF symbol SYM might be a function in SEC, return the |
5702 | function size and set *CODE_OFF to the function's entry point, | |
5703 | otherwise return zero. */ | |
9f296da3 | 5704 | |
aef36ac1 AM |
5705 | static bfd_size_type |
5706 | ppc64_elf_maybe_function_sym (const asymbol *sym, asection *sec, | |
5707 | bfd_vma *code_off) | |
9f296da3 | 5708 | { |
aef36ac1 | 5709 | bfd_size_type size; |
24aebc79 | 5710 | elf_symbol_type * elf_sym = (elf_symbol_type *) sym; |
aef36ac1 AM |
5711 | |
5712 | if ((sym->flags & (BSF_SECTION_SYM | BSF_FILE | BSF_OBJECT | |
5713 | | BSF_THREAD_LOCAL | BSF_RELC | BSF_SRELC)) != 0) | |
5714 | return 0; | |
5715 | ||
24aebc79 NC |
5716 | size = (sym->flags & BSF_SYNTHETIC) ? 0 : elf_sym->internal_elf_sym.st_size; |
5717 | ||
5718 | /* In theory we should check that the symbol's type satisfies | |
5719 | _bfd_elf_is_function_type(), but there are some function-like | |
5720 | symbols which would fail this test. (eg _start). Instead | |
5721 | we check for hidden, local, notype symbols with zero size. | |
5722 | This type of symbol is generated by the annobin plugin for gcc | |
5723 | and clang, and should not be considered to be a function symbol. */ | |
5724 | if (size == 0 | |
5725 | && ((sym->flags & (BSF_SYNTHETIC | BSF_LOCAL)) == BSF_LOCAL) | |
5726 | && ELF_ST_TYPE (elf_sym->internal_elf_sym.st_info) == STT_NOTYPE | |
5727 | && ELF_ST_VISIBILITY (elf_sym->internal_elf_sym.st_other) == STV_HIDDEN) | |
5728 | return 0; | |
aef36ac1 AM |
5729 | |
5730 | if (strcmp (sym->section->name, ".opd") == 0) | |
9f296da3 | 5731 | { |
b07bca4e AM |
5732 | struct _opd_sec_data *opd = get_opd_info (sym->section); |
5733 | bfd_vma symval = sym->value; | |
5734 | ||
5735 | if (opd != NULL | |
5736 | && opd->adjust != NULL | |
5737 | && elf_section_data (sym->section)->relocs != NULL) | |
5738 | { | |
5739 | /* opd_entry_value will use cached relocs that have been | |
5740 | adjusted, but with raw symbols. That means both local | |
5741 | and global symbols need adjusting. */ | |
5742 | long adjust = opd->adjust[OPD_NDX (symval)]; | |
5743 | if (adjust == -1) | |
5744 | return 0; | |
5745 | symval += adjust; | |
5746 | } | |
5747 | ||
5748 | if (opd_entry_value (sym->section, symval, | |
0a1b45a2 | 5749 | &sec, code_off, true) == (bfd_vma) -1) |
aef36ac1 AM |
5750 | return 0; |
5751 | /* An old ABI binary with dot-syms has a size of 24 on the .opd | |
5752 | symbol. This size has nothing to do with the code size of the | |
5753 | function, which is what we're supposed to return, but the | |
5754 | code size isn't available without looking up the dot-sym. | |
5755 | However, doing that would be a waste of time particularly | |
5756 | since elf_find_function will look at the dot-sym anyway. | |
5757 | Now, elf_find_function will keep the largest size of any | |
5758 | function sym found at the code address of interest, so return | |
5759 | 1 here to avoid it incorrectly caching a larger function size | |
5760 | for a small function. This does mean we return the wrong | |
5761 | size for a new-ABI function of size 24, but all that does is | |
5762 | disable caching for such functions. */ | |
5763 | if (size == 24) | |
5764 | size = 1; | |
9f296da3 | 5765 | } |
aef36ac1 AM |
5766 | else |
5767 | { | |
5768 | if (sym->section != sec) | |
5769 | return 0; | |
5770 | *code_off = sym->value; | |
5771 | } | |
24aebc79 NC |
5772 | |
5773 | /* Do not return 0 for the function's size. */ | |
5774 | return size ? size : 1; | |
9f296da3 AM |
5775 | } |
5776 | ||
f378ab09 AM |
5777 | /* Return true if symbol is a strong function defined in an ELFv2 |
5778 | object with st_other localentry bits of zero, ie. its local entry | |
5779 | point coincides with its global entry point. */ | |
5780 | ||
0a1b45a2 | 5781 | static bool |
f378ab09 AM |
5782 | is_elfv2_localentry0 (struct elf_link_hash_entry *h) |
5783 | { | |
5784 | return (h != NULL | |
5785 | && h->type == STT_FUNC | |
5786 | && h->root.type == bfd_link_hash_defined | |
5787 | && (STO_PPC64_LOCAL_MASK & h->other) == 0 | |
ed7007c1 | 5788 | && !ppc_elf_hash_entry (h)->non_zero_localentry |
f378ab09 AM |
5789 | && is_ppc64_elf (h->root.u.def.section->owner) |
5790 | && abiversion (h->root.u.def.section->owner) >= 2); | |
5791 | } | |
5792 | ||
854b41e7 AM |
5793 | /* Return true if symbol is defined in a regular object file. */ |
5794 | ||
0a1b45a2 | 5795 | static bool |
854b41e7 AM |
5796 | is_static_defined (struct elf_link_hash_entry *h) |
5797 | { | |
5798 | return ((h->root.type == bfd_link_hash_defined | |
5799 | || h->root.type == bfd_link_hash_defweak) | |
5800 | && h->root.u.def.section != NULL | |
5801 | && h->root.u.def.section->output_section != NULL); | |
5802 | } | |
5803 | ||
b31867b6 AM |
5804 | /* If FDH is a function descriptor symbol, return the associated code |
5805 | entry symbol if it is defined. Return NULL otherwise. */ | |
5806 | ||
5807 | static struct ppc_link_hash_entry * | |
5808 | defined_code_entry (struct ppc_link_hash_entry *fdh) | |
5809 | { | |
5810 | if (fdh->is_func_descriptor) | |
5811 | { | |
5812 | struct ppc_link_hash_entry *fh = ppc_follow_link (fdh->oh); | |
5813 | if (fh->elf.root.type == bfd_link_hash_defined | |
5814 | || fh->elf.root.type == bfd_link_hash_defweak) | |
5815 | return fh; | |
5816 | } | |
5817 | return NULL; | |
5818 | } | |
5819 | ||
5820 | /* If FH is a function code entry symbol, return the associated | |
5821 | function descriptor symbol if it is defined. Return NULL otherwise. */ | |
5822 | ||
5823 | static struct ppc_link_hash_entry * | |
5824 | defined_func_desc (struct ppc_link_hash_entry *fh) | |
5825 | { | |
5826 | if (fh->oh != NULL | |
5827 | && fh->oh->is_func_descriptor) | |
5828 | { | |
5829 | struct ppc_link_hash_entry *fdh = ppc_follow_link (fh->oh); | |
5830 | if (fdh->elf.root.type == bfd_link_hash_defined | |
5831 | || fdh->elf.root.type == bfd_link_hash_defweak) | |
5832 | return fdh; | |
5833 | } | |
5834 | return NULL; | |
5835 | } | |
5836 | ||
ed7007c1 AM |
5837 | /* Given H is a symbol that satisfies is_static_defined, return the |
5838 | value in the output file. */ | |
5839 | ||
5840 | static bfd_vma | |
5841 | defined_sym_val (struct elf_link_hash_entry *h) | |
5842 | { | |
5843 | return (h->root.u.def.section->output_section->vma | |
5844 | + h->root.u.def.section->output_offset | |
5845 | + h->root.u.def.value); | |
5846 | } | |
5847 | ||
5848 | /* Return true if H matches __tls_get_addr or one of its variants. */ | |
5849 | ||
0a1b45a2 | 5850 | static bool |
ed7007c1 AM |
5851 | is_tls_get_addr (struct elf_link_hash_entry *h, |
5852 | struct ppc_link_hash_table *htab) | |
5853 | { | |
30845f11 AM |
5854 | return (h == elf_hash_entry (htab->tls_get_addr_fd) |
5855 | || h == elf_hash_entry (htab->tga_desc_fd) | |
5856 | || h == elf_hash_entry (htab->tls_get_addr) | |
5857 | || h == elf_hash_entry (htab->tga_desc)); | |
ed7007c1 AM |
5858 | } |
5859 | ||
0a1b45a2 | 5860 | static bool func_desc_adjust (struct elf_link_hash_entry *, void *); |
8c5b4e52 AM |
5861 | |
5862 | /* Garbage collect sections, after first dealing with dot-symbols. */ | |
5863 | ||
0a1b45a2 | 5864 | static bool |
8c5b4e52 AM |
5865 | ppc64_elf_gc_sections (bfd *abfd, struct bfd_link_info *info) |
5866 | { | |
5867 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
5868 | ||
5869 | if (htab != NULL && htab->need_func_desc_adj) | |
5870 | { | |
5871 | elf_link_hash_traverse (&htab->elf, func_desc_adjust, info); | |
5872 | htab->need_func_desc_adj = 0; | |
5873 | } | |
5874 | return bfd_elf_gc_sections (abfd, info); | |
5875 | } | |
5876 | ||
74f0fb50 AM |
5877 | /* Mark all our entry sym sections, both opd and code section. */ |
5878 | ||
5879 | static void | |
5880 | ppc64_elf_gc_keep (struct bfd_link_info *info) | |
5881 | { | |
5882 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
5883 | struct bfd_sym_chain *sym; | |
5884 | ||
4dfe6ac6 NC |
5885 | if (htab == NULL) |
5886 | return; | |
5887 | ||
74f0fb50 AM |
5888 | for (sym = info->gc_sym_list; sym != NULL; sym = sym->next) |
5889 | { | |
b31867b6 | 5890 | struct ppc_link_hash_entry *eh, *fh; |
74f0fb50 AM |
5891 | asection *sec; |
5892 | ||
ed7007c1 | 5893 | eh = ppc_elf_hash_entry (elf_link_hash_lookup (&htab->elf, sym->name, |
0a1b45a2 | 5894 | false, false, true)); |
74f0fb50 AM |
5895 | if (eh == NULL) |
5896 | continue; | |
5897 | if (eh->elf.root.type != bfd_link_hash_defined | |
5898 | && eh->elf.root.type != bfd_link_hash_defweak) | |
5899 | continue; | |
5900 | ||
b31867b6 AM |
5901 | fh = defined_code_entry (eh); |
5902 | if (fh != NULL) | |
74f0fb50 | 5903 | { |
b31867b6 | 5904 | sec = fh->elf.root.u.def.section; |
74f0fb50 AM |
5905 | sec->flags |= SEC_KEEP; |
5906 | } | |
5907 | else if (get_opd_info (eh->elf.root.u.def.section) != NULL | |
5908 | && opd_entry_value (eh->elf.root.u.def.section, | |
5909 | eh->elf.root.u.def.value, | |
0a1b45a2 | 5910 | &sec, NULL, false) != (bfd_vma) -1) |
74f0fb50 AM |
5911 | sec->flags |= SEC_KEEP; |
5912 | ||
5913 | sec = eh->elf.root.u.def.section; | |
5914 | sec->flags |= SEC_KEEP; | |
5915 | } | |
5916 | } | |
5917 | ||
64d03ab5 AM |
5918 | /* Mark sections containing dynamically referenced symbols. When |
5919 | building shared libraries, we must assume that any visible symbol is | |
5920 | referenced. */ | |
5921 | ||
0a1b45a2 | 5922 | static bool |
64d03ab5 AM |
5923 | ppc64_elf_gc_mark_dynamic_ref (struct elf_link_hash_entry *h, void *inf) |
5924 | { | |
5925 | struct bfd_link_info *info = (struct bfd_link_info *) inf; | |
ed7007c1 | 5926 | struct ppc_link_hash_entry *eh = ppc_elf_hash_entry (h); |
b31867b6 | 5927 | struct ppc_link_hash_entry *fdh; |
b407645f | 5928 | struct bfd_elf_dynamic_list *d = info->dynamic_list; |
64d03ab5 | 5929 | |
64d03ab5 | 5930 | /* Dynamic linking info is on the func descriptor sym. */ |
b31867b6 AM |
5931 | fdh = defined_func_desc (eh); |
5932 | if (fdh != NULL) | |
5933 | eh = fdh; | |
64d03ab5 AM |
5934 | |
5935 | if ((eh->elf.root.type == bfd_link_hash_defined | |
5936 | || eh->elf.root.type == bfd_link_hash_defweak) | |
b80e421f AM |
5937 | && (!eh->elf.start_stop |
5938 | || eh->elf.root.ldscript_def | |
5939 | || !info->start_stop_gc) | |
87e79a65 | 5940 | && ((eh->elf.ref_dynamic && !eh->elf.forced_local) |
1c9177d9 | 5941 | || ((eh->elf.def_regular || ELF_COMMON_DEF_P (&eh->elf)) |
64d03ab5 | 5942 | && ELF_ST_VISIBILITY (eh->elf.other) != STV_INTERNAL |
4c58e0d8 | 5943 | && ELF_ST_VISIBILITY (eh->elf.other) != STV_HIDDEN |
0e1862bb | 5944 | && (!bfd_link_executable (info) |
e278ae05 | 5945 | || info->gc_keep_exported |
b407645f AM |
5946 | || info->export_dynamic |
5947 | || (eh->elf.dynamic | |
5948 | && d != NULL | |
2cdcc330 AM |
5949 | && (*d->match) (&d->head, NULL, |
5950 | eh->elf.root.root.string))) | |
e278ae05 | 5951 | && (eh->elf.versioned >= versioned |
4c58e0d8 AM |
5952 | || !bfd_hide_sym_by_version (info->version_info, |
5953 | eh->elf.root.root.string))))) | |
64d03ab5 AM |
5954 | { |
5955 | asection *code_sec; | |
b31867b6 | 5956 | struct ppc_link_hash_entry *fh; |
64d03ab5 AM |
5957 | |
5958 | eh->elf.root.u.def.section->flags |= SEC_KEEP; | |
5959 | ||
5960 | /* Function descriptor syms cause the associated | |
5961 | function code sym section to be marked. */ | |
b31867b6 AM |
5962 | fh = defined_code_entry (eh); |
5963 | if (fh != NULL) | |
5964 | { | |
5965 | code_sec = fh->elf.root.u.def.section; | |
5966 | code_sec->flags |= SEC_KEEP; | |
5967 | } | |
64d03ab5 AM |
5968 | else if (get_opd_info (eh->elf.root.u.def.section) != NULL |
5969 | && opd_entry_value (eh->elf.root.u.def.section, | |
5970 | eh->elf.root.u.def.value, | |
0a1b45a2 | 5971 | &code_sec, NULL, false) != (bfd_vma) -1) |
64d03ab5 AM |
5972 | code_sec->flags |= SEC_KEEP; |
5973 | } | |
5974 | ||
0a1b45a2 | 5975 | return true; |
64d03ab5 AM |
5976 | } |
5977 | ||
5bd4f169 AM |
5978 | /* Return the section that should be marked against GC for a given |
5979 | relocation. */ | |
5980 | ||
5981 | static asection * | |
4ce794b7 | 5982 | ppc64_elf_gc_mark_hook (asection *sec, |
fb34365b | 5983 | struct bfd_link_info *info, |
4ce794b7 AM |
5984 | Elf_Internal_Rela *rel, |
5985 | struct elf_link_hash_entry *h, | |
5986 | Elf_Internal_Sym *sym) | |
5bd4f169 | 5987 | { |
ccfa59ea AM |
5988 | asection *rsec; |
5989 | ||
ccfa59ea AM |
5990 | /* Syms return NULL if we're marking .opd, so we avoid marking all |
5991 | function sections, as all functions are referenced in .opd. */ | |
5992 | rsec = NULL; | |
5993 | if (get_opd_info (sec) != NULL) | |
5994 | return rsec; | |
1e2f5b6e | 5995 | |
5bd4f169 AM |
5996 | if (h != NULL) |
5997 | { | |
04c9666a | 5998 | enum elf_ppc64_reloc_type r_type; |
b31867b6 | 5999 | struct ppc_link_hash_entry *eh, *fh, *fdh; |
a33d1f77 | 6000 | |
4ce794b7 | 6001 | r_type = ELF64_R_TYPE (rel->r_info); |
a33d1f77 | 6002 | switch (r_type) |
5bd4f169 AM |
6003 | { |
6004 | case R_PPC64_GNU_VTINHERIT: | |
6005 | case R_PPC64_GNU_VTENTRY: | |
6006 | break; | |
6007 | ||
6008 | default: | |
6009 | switch (h->root.type) | |
6010 | { | |
6011 | case bfd_link_hash_defined: | |
6012 | case bfd_link_hash_defweak: | |
ed7007c1 | 6013 | eh = ppc_elf_hash_entry (h); |
b31867b6 AM |
6014 | fdh = defined_func_desc (eh); |
6015 | if (fdh != NULL) | |
8c5b4e52 AM |
6016 | { |
6017 | /* -mcall-aixdesc code references the dot-symbol on | |
6018 | a call reloc. Mark the function descriptor too | |
6019 | against garbage collection. */ | |
6020 | fdh->elf.mark = 1; | |
60d67dc8 AM |
6021 | if (fdh->elf.is_weakalias) |
6022 | weakdef (&fdh->elf)->mark = 1; | |
8c5b4e52 AM |
6023 | eh = fdh; |
6024 | } | |
1e2f5b6e AM |
6025 | |
6026 | /* Function descriptor syms cause the associated | |
6027 | function code sym section to be marked. */ | |
b31867b6 AM |
6028 | fh = defined_code_entry (eh); |
6029 | if (fh != NULL) | |
ccfa59ea AM |
6030 | { |
6031 | /* They also mark their opd section. */ | |
74f0fb50 | 6032 | eh->elf.root.u.def.section->gc_mark = 1; |
ccfa59ea | 6033 | |
b31867b6 | 6034 | rsec = fh->elf.root.u.def.section; |
ccfa59ea | 6035 | } |
8387904d AM |
6036 | else if (get_opd_info (eh->elf.root.u.def.section) != NULL |
6037 | && opd_entry_value (eh->elf.root.u.def.section, | |
6038 | eh->elf.root.u.def.value, | |
0a1b45a2 | 6039 | &rsec, NULL, false) != (bfd_vma) -1) |
74f0fb50 | 6040 | eh->elf.root.u.def.section->gc_mark = 1; |
ccfa59ea | 6041 | else |
1e2f5b6e AM |
6042 | rsec = h->root.u.def.section; |
6043 | break; | |
5bd4f169 AM |
6044 | |
6045 | case bfd_link_hash_common: | |
1e2f5b6e AM |
6046 | rsec = h->root.u.c.p->section; |
6047 | break; | |
5bd4f169 AM |
6048 | |
6049 | default: | |
fb34365b | 6050 | return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym); |
5bd4f169 AM |
6051 | } |
6052 | } | |
6053 | } | |
6054 | else | |
6055 | { | |
74f0fb50 | 6056 | struct _opd_sec_data *opd; |
1e2f5b6e AM |
6057 | |
6058 | rsec = bfd_section_from_elf_index (sec->owner, sym->st_shndx); | |
74f0fb50 AM |
6059 | opd = get_opd_info (rsec); |
6060 | if (opd != NULL && opd->func_sec != NULL) | |
ccfa59ea | 6061 | { |
74f0fb50 | 6062 | rsec->gc_mark = 1; |
ccfa59ea | 6063 | |
51aecdc5 | 6064 | rsec = opd->func_sec[OPD_NDX (sym->st_value + rel->r_addend)]; |
ccfa59ea | 6065 | } |
5bd4f169 AM |
6066 | } |
6067 | ||
1e2f5b6e | 6068 | return rsec; |
5bd4f169 AM |
6069 | } |
6070 | ||
deb0e272 AM |
6071 | /* The maximum size of .sfpr. */ |
6072 | #define SFPR_MAX (218*4) | |
6073 | ||
6074 | struct sfpr_def_parms | |
6075 | { | |
699733f6 AM |
6076 | const char name[12]; |
6077 | unsigned char lo, hi; | |
2cdcc330 AM |
6078 | bfd_byte *(*write_ent) (bfd *, bfd_byte *, int); |
6079 | bfd_byte *(*write_tail) (bfd *, bfd_byte *, int); | |
deb0e272 AM |
6080 | }; |
6081 | ||
a4b6fadd AM |
6082 | /* Auto-generate _save*, _rest* functions in .sfpr. |
6083 | If STUB_SEC is non-null, define alias symbols in STUB_SEC | |
6084 | instead. */ | |
deb0e272 | 6085 | |
0a1b45a2 | 6086 | static bool |
a4b6fadd AM |
6087 | sfpr_define (struct bfd_link_info *info, |
6088 | const struct sfpr_def_parms *parm, | |
6089 | asection *stub_sec) | |
deb0e272 AM |
6090 | { |
6091 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
6092 | unsigned int i; | |
6093 | size_t len = strlen (parm->name); | |
0a1b45a2 | 6094 | bool writing = false; |
699733f6 | 6095 | char sym[16]; |
deb0e272 | 6096 | |
4dfe6ac6 | 6097 | if (htab == NULL) |
0a1b45a2 | 6098 | return false; |
4dfe6ac6 | 6099 | |
deb0e272 AM |
6100 | memcpy (sym, parm->name, len); |
6101 | sym[len + 2] = 0; | |
6102 | ||
6103 | for (i = parm->lo; i <= parm->hi; i++) | |
6104 | { | |
a4b6fadd | 6105 | struct ppc_link_hash_entry *h; |
deb0e272 AM |
6106 | |
6107 | sym[len + 0] = i / 10 + '0'; | |
6108 | sym[len + 1] = i % 10 + '0'; | |
ed7007c1 | 6109 | h = ppc_elf_hash_entry (elf_link_hash_lookup (&htab->elf, sym, |
0a1b45a2 | 6110 | writing, true, true)); |
a4b6fadd | 6111 | if (stub_sec != NULL) |
deb0e272 | 6112 | { |
a4b6fadd AM |
6113 | if (h != NULL |
6114 | && h->elf.root.type == bfd_link_hash_defined | |
6115 | && h->elf.root.u.def.section == htab->sfpr) | |
6116 | { | |
6117 | struct elf_link_hash_entry *s; | |
6118 | char buf[32]; | |
6119 | sprintf (buf, "%08x.%s", stub_sec->id & 0xffffffff, sym); | |
0a1b45a2 | 6120 | s = elf_link_hash_lookup (&htab->elf, buf, true, true, false); |
a4b6fadd | 6121 | if (s == NULL) |
0a1b45a2 | 6122 | return false; |
779f2ae7 | 6123 | if (s->root.type == bfd_link_hash_new) |
a4b6fadd AM |
6124 | { |
6125 | s->root.type = bfd_link_hash_defined; | |
6126 | s->root.u.def.section = stub_sec; | |
7dda8d3c | 6127 | s->root.u.def.value = (stub_sec->size - htab->sfpr->size |
a4b6fadd AM |
6128 | + h->elf.root.u.def.value); |
6129 | s->ref_regular = 1; | |
6130 | s->def_regular = 1; | |
6131 | s->ref_regular_nonweak = 1; | |
6132 | s->forced_local = 1; | |
6133 | s->non_elf = 0; | |
6134 | s->root.linker_def = 1; | |
6135 | } | |
6136 | } | |
6137 | continue; | |
6138 | } | |
6139 | if (h != NULL) | |
6140 | { | |
6141 | h->save_res = 1; | |
6142 | if (!h->elf.def_regular) | |
deb0e272 | 6143 | { |
a4b6fadd AM |
6144 | h->elf.root.type = bfd_link_hash_defined; |
6145 | h->elf.root.u.def.section = htab->sfpr; | |
6146 | h->elf.root.u.def.value = htab->sfpr->size; | |
6147 | h->elf.type = STT_FUNC; | |
6148 | h->elf.def_regular = 1; | |
b32547cd | 6149 | h->elf.non_elf = 0; |
0a1b45a2 AM |
6150 | _bfd_elf_link_hash_hide_symbol (info, &h->elf, true); |
6151 | writing = true; | |
deb0e272 | 6152 | if (htab->sfpr->contents == NULL) |
a4b6fadd | 6153 | { |
2cdcc330 AM |
6154 | htab->sfpr->contents |
6155 | = bfd_alloc (htab->elf.dynobj, SFPR_MAX); | |
a4b6fadd | 6156 | if (htab->sfpr->contents == NULL) |
0a1b45a2 | 6157 | return false; |
a4b6fadd | 6158 | } |
deb0e272 AM |
6159 | } |
6160 | } | |
6161 | if (writing) | |
6162 | { | |
6163 | bfd_byte *p = htab->sfpr->contents + htab->sfpr->size; | |
6164 | if (i != parm->hi) | |
6165 | p = (*parm->write_ent) (htab->elf.dynobj, p, i); | |
6166 | else | |
6167 | p = (*parm->write_tail) (htab->elf.dynobj, p, i); | |
6168 | htab->sfpr->size = p - htab->sfpr->contents; | |
6169 | } | |
6170 | } | |
6171 | ||
0a1b45a2 | 6172 | return true; |
deb0e272 AM |
6173 | } |
6174 | ||
6175 | static bfd_byte * | |
6176 | savegpr0 (bfd *abfd, bfd_byte *p, int r) | |
6177 | { | |
6178 | bfd_put_32 (abfd, STD_R0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p); | |
6179 | return p + 4; | |
6180 | } | |
6181 | ||
6182 | static bfd_byte * | |
6183 | savegpr0_tail (bfd *abfd, bfd_byte *p, int r) | |
6184 | { | |
6185 | p = savegpr0 (abfd, p, r); | |
a078d95a | 6186 | bfd_put_32 (abfd, STD_R0_0R1 + STK_LR, p); |
deb0e272 AM |
6187 | p = p + 4; |
6188 | bfd_put_32 (abfd, BLR, p); | |
6189 | return p + 4; | |
6190 | } | |
6191 | ||
6192 | static bfd_byte * | |
6193 | restgpr0 (bfd *abfd, bfd_byte *p, int r) | |
6194 | { | |
6195 | bfd_put_32 (abfd, LD_R0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p); | |
6196 | return p + 4; | |
6197 | } | |
6198 | ||
6199 | static bfd_byte * | |
6200 | restgpr0_tail (bfd *abfd, bfd_byte *p, int r) | |
6201 | { | |
a078d95a | 6202 | bfd_put_32 (abfd, LD_R0_0R1 + STK_LR, p); |
deb0e272 AM |
6203 | p = p + 4; |
6204 | p = restgpr0 (abfd, p, r); | |
6205 | bfd_put_32 (abfd, MTLR_R0, p); | |
6206 | p = p + 4; | |
6207 | if (r == 29) | |
6208 | { | |
6209 | p = restgpr0 (abfd, p, 30); | |
6210 | p = restgpr0 (abfd, p, 31); | |
6211 | } | |
6212 | bfd_put_32 (abfd, BLR, p); | |
6213 | return p + 4; | |
6214 | } | |
6215 | ||
6216 | static bfd_byte * | |
6217 | savegpr1 (bfd *abfd, bfd_byte *p, int r) | |
6218 | { | |
6219 | bfd_put_32 (abfd, STD_R0_0R12 + (r << 21) + (1 << 16) - (32 - r) * 8, p); | |
6220 | return p + 4; | |
6221 | } | |
6222 | ||
6223 | static bfd_byte * | |
6224 | savegpr1_tail (bfd *abfd, bfd_byte *p, int r) | |
6225 | { | |
6226 | p = savegpr1 (abfd, p, r); | |
6227 | bfd_put_32 (abfd, BLR, p); | |
6228 | return p + 4; | |
6229 | } | |
6230 | ||
6231 | static bfd_byte * | |
6232 | restgpr1 (bfd *abfd, bfd_byte *p, int r) | |
6233 | { | |
6234 | bfd_put_32 (abfd, LD_R0_0R12 + (r << 21) + (1 << 16) - (32 - r) * 8, p); | |
6235 | return p + 4; | |
6236 | } | |
6237 | ||
6238 | static bfd_byte * | |
6239 | restgpr1_tail (bfd *abfd, bfd_byte *p, int r) | |
6240 | { | |
6241 | p = restgpr1 (abfd, p, r); | |
6242 | bfd_put_32 (abfd, BLR, p); | |
6243 | return p + 4; | |
6244 | } | |
6245 | ||
6246 | static bfd_byte * | |
6247 | savefpr (bfd *abfd, bfd_byte *p, int r) | |
6248 | { | |
6249 | bfd_put_32 (abfd, STFD_FR0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p); | |
6250 | return p + 4; | |
6251 | } | |
6252 | ||
6253 | static bfd_byte * | |
6254 | savefpr0_tail (bfd *abfd, bfd_byte *p, int r) | |
6255 | { | |
6256 | p = savefpr (abfd, p, r); | |
a078d95a | 6257 | bfd_put_32 (abfd, STD_R0_0R1 + STK_LR, p); |
deb0e272 AM |
6258 | p = p + 4; |
6259 | bfd_put_32 (abfd, BLR, p); | |
6260 | return p + 4; | |
6261 | } | |
6262 | ||
6263 | static bfd_byte * | |
6264 | restfpr (bfd *abfd, bfd_byte *p, int r) | |
6265 | { | |
6266 | bfd_put_32 (abfd, LFD_FR0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p); | |
6267 | return p + 4; | |
6268 | } | |
6269 | ||
6270 | static bfd_byte * | |
6271 | restfpr0_tail (bfd *abfd, bfd_byte *p, int r) | |
6272 | { | |
a078d95a | 6273 | bfd_put_32 (abfd, LD_R0_0R1 + STK_LR, p); |
deb0e272 AM |
6274 | p = p + 4; |
6275 | p = restfpr (abfd, p, r); | |
6276 | bfd_put_32 (abfd, MTLR_R0, p); | |
6277 | p = p + 4; | |
6278 | if (r == 29) | |
6279 | { | |
6280 | p = restfpr (abfd, p, 30); | |
6281 | p = restfpr (abfd, p, 31); | |
6282 | } | |
6283 | bfd_put_32 (abfd, BLR, p); | |
6284 | return p + 4; | |
6285 | } | |
6286 | ||
6287 | static bfd_byte * | |
6288 | savefpr1_tail (bfd *abfd, bfd_byte *p, int r) | |
6289 | { | |
6290 | p = savefpr (abfd, p, r); | |
6291 | bfd_put_32 (abfd, BLR, p); | |
6292 | return p + 4; | |
6293 | } | |
6294 | ||
6295 | static bfd_byte * | |
6296 | restfpr1_tail (bfd *abfd, bfd_byte *p, int r) | |
6297 | { | |
6298 | p = restfpr (abfd, p, r); | |
6299 | bfd_put_32 (abfd, BLR, p); | |
6300 | return p + 4; | |
6301 | } | |
6302 | ||
6303 | static bfd_byte * | |
6304 | savevr (bfd *abfd, bfd_byte *p, int r) | |
6305 | { | |
6306 | bfd_put_32 (abfd, LI_R12_0 + (1 << 16) - (32 - r) * 16, p); | |
6307 | p = p + 4; | |
6308 | bfd_put_32 (abfd, STVX_VR0_R12_R0 + (r << 21), p); | |
6309 | return p + 4; | |
6310 | } | |
6311 | ||
6312 | static bfd_byte * | |
6313 | savevr_tail (bfd *abfd, bfd_byte *p, int r) | |
6314 | { | |
6315 | p = savevr (abfd, p, r); | |
6316 | bfd_put_32 (abfd, BLR, p); | |
6317 | return p + 4; | |
6318 | } | |
6319 | ||
6320 | static bfd_byte * | |
6321 | restvr (bfd *abfd, bfd_byte *p, int r) | |
6322 | { | |
6323 | bfd_put_32 (abfd, LI_R12_0 + (1 << 16) - (32 - r) * 16, p); | |
6324 | p = p + 4; | |
6325 | bfd_put_32 (abfd, LVX_VR0_R12_R0 + (r << 21), p); | |
6326 | return p + 4; | |
6327 | } | |
6328 | ||
6329 | static bfd_byte * | |
6330 | restvr_tail (bfd *abfd, bfd_byte *p, int r) | |
6331 | { | |
6332 | p = restvr (abfd, p, r); | |
6333 | bfd_put_32 (abfd, BLR, p); | |
6334 | return p + 4; | |
6335 | } | |
6336 | ||
9e7028aa AM |
6337 | #define STDU_R1_0R1 0xf8210001 |
6338 | #define ADDI_R1_R1 0x38210000 | |
6339 | ||
6340 | /* Emit prologue of wrapper preserving regs around a call to | |
6341 | __tls_get_addr_opt. */ | |
6342 | ||
6343 | static bfd_byte * | |
6344 | tls_get_addr_prologue (bfd *obfd, bfd_byte *p, struct ppc_link_hash_table *htab) | |
6345 | { | |
6346 | unsigned int i; | |
6347 | ||
6348 | bfd_put_32 (obfd, MFLR_R0, p); | |
6349 | p += 4; | |
6350 | bfd_put_32 (obfd, STD_R0_0R1 + 16, p); | |
6351 | p += 4; | |
6352 | ||
6353 | if (htab->opd_abi) | |
6354 | { | |
6355 | for (i = 4; i < 12; i++) | |
6356 | { | |
6357 | bfd_put_32 (obfd, | |
6358 | STD_R0_0R1 | i << 21 | (-(13 - i) * 8 & 0xffff), p); | |
6359 | p += 4; | |
6360 | } | |
6361 | bfd_put_32 (obfd, STDU_R1_0R1 | (-128 & 0xffff), p); | |
6362 | p += 4; | |
6363 | } | |
6364 | else | |
6365 | { | |
6366 | for (i = 4; i < 12; i++) | |
6367 | { | |
6368 | bfd_put_32 (obfd, | |
6369 | STD_R0_0R1 | i << 21 | (-(12 - i) * 8 & 0xffff), p); | |
6370 | p += 4; | |
6371 | } | |
6372 | bfd_put_32 (obfd, STDU_R1_0R1 | (-96 & 0xffff), p); | |
6373 | p += 4; | |
6374 | } | |
6375 | return p; | |
6376 | } | |
6377 | ||
6378 | /* Emit epilogue of wrapper preserving regs around a call to | |
6379 | __tls_get_addr_opt. */ | |
6380 | ||
6381 | static bfd_byte * | |
6382 | tls_get_addr_epilogue (bfd *obfd, bfd_byte *p, struct ppc_link_hash_table *htab) | |
6383 | { | |
6384 | unsigned int i; | |
6385 | ||
6386 | if (htab->opd_abi) | |
6387 | { | |
6388 | for (i = 4; i < 12; i++) | |
6389 | { | |
6390 | bfd_put_32 (obfd, LD_R0_0R1 | i << 21 | (128 - (13 - i) * 8), p); | |
6391 | p += 4; | |
6392 | } | |
6393 | bfd_put_32 (obfd, ADDI_R1_R1 | 128, p); | |
6394 | p += 4; | |
6395 | } | |
6396 | else | |
6397 | { | |
6398 | for (i = 4; i < 12; i++) | |
6399 | { | |
6400 | bfd_put_32 (obfd, LD_R0_0R1 | i << 21 | (96 - (12 - i) * 8), p); | |
6401 | p += 4; | |
6402 | } | |
6403 | bfd_put_32 (obfd, ADDI_R1_R1 | 96, p); | |
6404 | p += 4; | |
6405 | } | |
6406 | bfd_put_32 (obfd, LD_R0_0R1 | 16, p); | |
6407 | p += 4; | |
6408 | bfd_put_32 (obfd, MTLR_R0, p); | |
6409 | p += 4; | |
6410 | bfd_put_32 (obfd, BLR, p); | |
6411 | p += 4; | |
6412 | return p; | |
6413 | } | |
6414 | ||
e86ce104 AM |
6415 | /* Called via elf_link_hash_traverse to transfer dynamic linking |
6416 | information on function code symbol entries to their corresponding | |
a442059f AM |
6417 | function descriptor symbol entries. Must not be called twice for |
6418 | any given code symbol. */ | |
deb0e272 | 6419 | |
0a1b45a2 | 6420 | static bool |
4ce794b7 | 6421 | func_desc_adjust (struct elf_link_hash_entry *h, void *inf) |
5bd4f169 | 6422 | { |
e86ce104 | 6423 | struct bfd_link_info *info; |
65f38f15 | 6424 | struct ppc_link_hash_table *htab; |
50bc7936 AM |
6425 | struct ppc_link_hash_entry *fh; |
6426 | struct ppc_link_hash_entry *fdh; | |
0a1b45a2 | 6427 | bool force_local; |
5bd4f169 | 6428 | |
ed7007c1 | 6429 | fh = ppc_elf_hash_entry (h); |
50bc7936 | 6430 | if (fh->elf.root.type == bfd_link_hash_indirect) |
0a1b45a2 | 6431 | return true; |
e86ce104 | 6432 | |
8c5b4e52 | 6433 | if (!fh->is_func) |
0a1b45a2 | 6434 | return true; |
8c5b4e52 AM |
6435 | |
6436 | if (fh->elf.root.root.string[0] != '.' | |
6437 | || fh->elf.root.root.string[1] == '\0') | |
0a1b45a2 | 6438 | return true; |
8c5b4e52 | 6439 | |
4ce794b7 | 6440 | info = inf; |
65f38f15 | 6441 | htab = ppc_hash_table (info); |
4dfe6ac6 | 6442 | if (htab == NULL) |
0a1b45a2 | 6443 | return false; |
5bd4f169 | 6444 | |
8c5b4e52 AM |
6445 | /* Find the corresponding function descriptor symbol. */ |
6446 | fdh = lookup_fdh (fh, htab); | |
6447 | ||
c09bdfe5 AM |
6448 | /* Resolve undefined references to dot-symbols as the value |
6449 | in the function descriptor, if we have one in a regular object. | |
6450 | This is to satisfy cases like ".quad .foo". Calls to functions | |
6451 | in dynamic objects are handled elsewhere. */ | |
8c5b4e52 AM |
6452 | if ((fh->elf.root.type == bfd_link_hash_undefined |
6453 | || fh->elf.root.type == bfd_link_hash_undefweak) | |
6454 | && (fdh->elf.root.type == bfd_link_hash_defined | |
6455 | || fdh->elf.root.type == bfd_link_hash_defweak) | |
b31867b6 AM |
6456 | && get_opd_info (fdh->elf.root.u.def.section) != NULL |
6457 | && opd_entry_value (fdh->elf.root.u.def.section, | |
6458 | fdh->elf.root.u.def.value, | |
c09bdfe5 | 6459 | &fh->elf.root.u.def.section, |
0a1b45a2 | 6460 | &fh->elf.root.u.def.value, false) != (bfd_vma) -1) |
c09bdfe5 | 6461 | { |
b31867b6 | 6462 | fh->elf.root.type = fdh->elf.root.type; |
f5385ebf | 6463 | fh->elf.forced_local = 1; |
b31867b6 AM |
6464 | fh->elf.def_regular = fdh->elf.def_regular; |
6465 | fh->elf.def_dynamic = fdh->elf.def_dynamic; | |
c09bdfe5 AM |
6466 | } |
6467 | ||
8c5b4e52 AM |
6468 | if (!fh->elf.dynamic) |
6469 | { | |
6470 | struct plt_entry *ent; | |
5bd4f169 | 6471 | |
8c5b4e52 AM |
6472 | for (ent = fh->elf.plt.plist; ent != NULL; ent = ent->next) |
6473 | if (ent->plt.refcount > 0) | |
6474 | break; | |
6475 | if (ent == NULL) | |
a442059f AM |
6476 | { |
6477 | if (fdh != NULL && fdh->fake) | |
6478 | _bfd_elf_link_hash_hide_symbol (info, &fdh->elf, true); | |
6479 | return true; | |
6480 | } | |
8c5b4e52 | 6481 | } |
5bd4f169 | 6482 | |
8c5b4e52 | 6483 | /* Create a descriptor as undefined if necessary. */ |
50bc7936 | 6484 | if (fdh == NULL |
0e1862bb | 6485 | && !bfd_link_executable (info) |
50bc7936 AM |
6486 | && (fh->elf.root.type == bfd_link_hash_undefined |
6487 | || fh->elf.root.type == bfd_link_hash_undefweak)) | |
6488 | { | |
908b32fc | 6489 | fdh = make_fdh (info, fh); |
bb700d78 | 6490 | if (fdh == NULL) |
0a1b45a2 | 6491 | return false; |
50bc7936 | 6492 | } |
648cca2c | 6493 | |
8c5b4e52 | 6494 | /* We can't support overriding of symbols on a fake descriptor. */ |
908b32fc AM |
6495 | if (fdh != NULL |
6496 | && fdh->fake | |
8c5b4e52 AM |
6497 | && (fh->elf.root.type == bfd_link_hash_defined |
6498 | || fh->elf.root.type == bfd_link_hash_defweak)) | |
0a1b45a2 | 6499 | _bfd_elf_link_hash_hide_symbol (info, &fdh->elf, true); |
908b32fc | 6500 | |
8c5b4e52 AM |
6501 | /* Transfer dynamic linking information to the function descriptor. */ |
6502 | if (fdh != NULL) | |
6503 | { | |
f5385ebf AM |
6504 | fdh->elf.ref_regular |= fh->elf.ref_regular; |
6505 | fdh->elf.ref_dynamic |= fh->elf.ref_dynamic; | |
6506 | fdh->elf.ref_regular_nonweak |= fh->elf.ref_regular_nonweak; | |
6507 | fdh->elf.non_got_ref |= fh->elf.non_got_ref; | |
8c5b4e52 AM |
6508 | fdh->elf.dynamic |= fh->elf.dynamic; |
6509 | fdh->elf.needs_plt |= (fh->elf.needs_plt | |
6510 | || fh->elf.type == STT_FUNC | |
6511 | || fh->elf.type == STT_GNU_IFUNC); | |
6512 | move_plt_plist (fh, fdh); | |
6513 | ||
6514 | if (!fdh->elf.forced_local | |
6515 | && fh->elf.dynindx != -1) | |
6516 | if (!bfd_elf_link_record_dynamic_symbol (info, &fdh->elf)) | |
0a1b45a2 | 6517 | return false; |
e86ce104 AM |
6518 | } |
6519 | ||
50bc7936 AM |
6520 | /* Now that the info is on the function descriptor, clear the |
6521 | function code sym info. Any function code syms for which we | |
6522 | don't have a definition in a regular file, we force local. | |
6523 | This prevents a shared library from exporting syms that have | |
6524 | been imported from another library. Function code syms that | |
6525 | are really in the library we must leave global to prevent the | |
6526 | linker dragging in a definition from a static library. */ | |
93f3fa99 AM |
6527 | force_local = (!fh->elf.def_regular |
6528 | || fdh == NULL | |
6529 | || !fdh->elf.def_regular | |
6530 | || fdh->elf.forced_local); | |
50bc7936 AM |
6531 | _bfd_elf_link_hash_hide_symbol (info, &fh->elf, force_local); |
6532 | ||
0a1b45a2 | 6533 | return true; |
e86ce104 | 6534 | } |
40b8271b | 6535 | |
a4b6fadd AM |
6536 | static const struct sfpr_def_parms save_res_funcs[] = |
6537 | { | |
6538 | { "_savegpr0_", 14, 31, savegpr0, savegpr0_tail }, | |
6539 | { "_restgpr0_", 14, 29, restgpr0, restgpr0_tail }, | |
6540 | { "_restgpr0_", 30, 31, restgpr0, restgpr0_tail }, | |
6541 | { "_savegpr1_", 14, 31, savegpr1, savegpr1_tail }, | |
6542 | { "_restgpr1_", 14, 31, restgpr1, restgpr1_tail }, | |
6543 | { "_savefpr_", 14, 31, savefpr, savefpr0_tail }, | |
6544 | { "_restfpr_", 14, 29, restfpr, restfpr0_tail }, | |
6545 | { "_restfpr_", 30, 31, restfpr, restfpr0_tail }, | |
6546 | { "._savef", 14, 31, savefpr, savefpr1_tail }, | |
6547 | { "._restf", 14, 31, restfpr, restfpr1_tail }, | |
6548 | { "_savevr_", 20, 31, savevr, savevr_tail }, | |
6549 | { "_restvr_", 20, 31, restvr, restvr_tail } | |
6550 | }; | |
6551 | ||
e86ce104 | 6552 | /* Called near the start of bfd_elf_size_dynamic_sections. We use |
c9405344 AM |
6553 | this hook to a) run the edit functions in this file, b) provide |
6554 | some gcc support functions, and c) transfer dynamic linking | |
6555 | information gathered so far on function code symbol entries, to | |
6556 | their corresponding function descriptor symbol entries. */ | |
deb0e272 | 6557 | |
0a1b45a2 | 6558 | static bool |
c9405344 | 6559 | ppc64_elf_edit (bfd *obfd ATTRIBUTE_UNUSED, struct bfd_link_info *info) |
e86ce104 AM |
6560 | { |
6561 | struct ppc_link_hash_table *htab; | |
6562 | ||
6563 | htab = ppc_hash_table (info); | |
4dfe6ac6 | 6564 | if (htab == NULL) |
0a1b45a2 | 6565 | return false; |
4dfe6ac6 | 6566 | |
c9405344 AM |
6567 | /* Call back into the linker, which then runs the edit functions. */ |
6568 | htab->params->edit (); | |
6569 | ||
b32547cd AM |
6570 | /* Provide any missing _save* and _rest* functions. */ |
6571 | if (htab->sfpr != NULL) | |
6572 | { | |
6573 | unsigned int i; | |
6574 | ||
6575 | htab->sfpr->size = 0; | |
6576 | for (i = 0; i < ARRAY_SIZE (save_res_funcs); i++) | |
6577 | if (!sfpr_define (info, &save_res_funcs[i], NULL)) | |
0a1b45a2 | 6578 | return false; |
b32547cd AM |
6579 | if (htab->sfpr->size == 0) |
6580 | htab->sfpr->flags |= SEC_EXCLUDE; | |
6581 | } | |
6582 | ||
6583 | if (bfd_link_relocatable (info)) | |
0a1b45a2 | 6584 | return true; |
b32547cd AM |
6585 | |
6586 | if (htab->elf.hgot != NULL) | |
dba6fa9b | 6587 | { |
0a1b45a2 | 6588 | _bfd_elf_link_hash_hide_symbol (info, htab->elf.hgot, true); |
dba6fa9b AM |
6589 | /* Make .TOC. defined so as to prevent it being made dynamic. |
6590 | The wrong value here is fixed later in ppc64_elf_set_toc. */ | |
43417696 AM |
6591 | if (!htab->elf.hgot->def_regular |
6592 | || htab->elf.hgot->root.type != bfd_link_hash_defined) | |
6593 | { | |
6594 | htab->elf.hgot->root.type = bfd_link_hash_defined; | |
6595 | htab->elf.hgot->root.u.def.value = 0; | |
6596 | htab->elf.hgot->root.u.def.section = bfd_abs_section_ptr; | |
6597 | htab->elf.hgot->def_regular = 1; | |
6598 | htab->elf.hgot->root.linker_def = 1; | |
6599 | } | |
dba6fa9b | 6600 | htab->elf.hgot->type = STT_OBJECT; |
2cdcc330 AM |
6601 | htab->elf.hgot->other |
6602 | = (htab->elf.hgot->other & ~ELF_ST_VISIBILITY (-1)) | STV_HIDDEN; | |
dba6fa9b | 6603 | } |
c66bb0ee | 6604 | |
0a1b45a2 | 6605 | return true; |
e86ce104 AM |
6606 | } |
6607 | ||
d311bc8b | 6608 | /* Return true if we have dynamic relocs against H or any of its weak |
ab2477e1 AM |
6609 | aliases, that apply to read-only sections. Cannot be used after |
6610 | size_dynamic_sections. */ | |
d311bc8b | 6611 | |
0a1b45a2 | 6612 | static bool |
d311bc8b AM |
6613 | alias_readonly_dynrelocs (struct elf_link_hash_entry *h) |
6614 | { | |
ed7007c1 | 6615 | struct ppc_link_hash_entry *eh = ppc_elf_hash_entry (h); |
d311bc8b AM |
6616 | do |
6617 | { | |
5dbc8b37 | 6618 | if (_bfd_elf_readonly_dynrelocs (&eh->elf)) |
0a1b45a2 | 6619 | return true; |
ed7007c1 | 6620 | eh = ppc_elf_hash_entry (eh->elf.u.alias); |
2cdcc330 AM |
6621 | } |
6622 | while (eh != NULL && &eh->elf != h); | |
d311bc8b | 6623 | |
0a1b45a2 | 6624 | return false; |
d311bc8b | 6625 | } |
8a2058b5 | 6626 | |
8a9e8e72 AM |
6627 | /* Return whether EH has pc-relative dynamic relocs. */ |
6628 | ||
0a1b45a2 | 6629 | static bool |
8a9e8e72 AM |
6630 | pc_dynrelocs (struct ppc_link_hash_entry *eh) |
6631 | { | |
1657026c | 6632 | struct ppc_dyn_relocs *p; |
8a9e8e72 | 6633 | |
1657026c | 6634 | for (p = (struct ppc_dyn_relocs *) eh->elf.dyn_relocs; p != NULL; p = p->next) |
8a9e8e72 | 6635 | if (p->pc_count != 0) |
0a1b45a2 AM |
6636 | return true; |
6637 | return false; | |
8a9e8e72 AM |
6638 | } |
6639 | ||
8a2058b5 AM |
6640 | /* Return true if a global entry stub will be created for H. Valid |
6641 | for ELFv2 before plt entries have been allocated. */ | |
6642 | ||
0a1b45a2 | 6643 | static bool |
8a2058b5 AM |
6644 | global_entry_stub (struct elf_link_hash_entry *h) |
6645 | { | |
6646 | struct plt_entry *pent; | |
6647 | ||
6648 | if (!h->pointer_equality_needed | |
6649 | || h->def_regular) | |
0a1b45a2 | 6650 | return false; |
8a2058b5 AM |
6651 | |
6652 | for (pent = h->plt.plist; pent != NULL; pent = pent->next) | |
6653 | if (pent->plt.refcount > 0 | |
6654 | && pent->addend == 0) | |
0a1b45a2 | 6655 | return true; |
8a2058b5 | 6656 | |
0a1b45a2 | 6657 | return false; |
8a2058b5 AM |
6658 | } |
6659 | ||
e86ce104 AM |
6660 | /* Adjust a symbol defined by a dynamic object and referenced by a |
6661 | regular object. The current definition is in some section of the | |
6662 | dynamic object, but we're not including those sections. We have to | |
6663 | change the definition to something the rest of the link can | |
6664 | understand. */ | |
6665 | ||
0a1b45a2 | 6666 | static bool |
4ce794b7 AM |
6667 | ppc64_elf_adjust_dynamic_symbol (struct bfd_link_info *info, |
6668 | struct elf_link_hash_entry *h) | |
e86ce104 AM |
6669 | { |
6670 | struct ppc_link_hash_table *htab; | |
5474d94f | 6671 | asection *s, *srel; |
e86ce104 AM |
6672 | |
6673 | htab = ppc_hash_table (info); | |
4dfe6ac6 | 6674 | if (htab == NULL) |
0a1b45a2 | 6675 | return false; |
e86ce104 AM |
6676 | |
6677 | /* Deal with function syms. */ | |
6678 | if (h->type == STT_FUNC | |
e054468f | 6679 | || h->type == STT_GNU_IFUNC |
f5385ebf | 6680 | || h->needs_plt) |
e86ce104 | 6681 | { |
0a1b45a2 AM |
6682 | bool local = (ppc_elf_hash_entry (h)->save_res |
6683 | || SYMBOL_CALLS_LOCAL (info, h) | |
6684 | || UNDEFWEAK_NO_DYNAMIC_RELOC (info, h)); | |
529fe20e AM |
6685 | /* Discard dyn_relocs when non-pic if we've decided that a |
6686 | function symbol is local and not an ifunc. We keep dynamic | |
6687 | relocs for ifuncs when local rather than always emitting a | |
6688 | plt call stub for them and defining the symbol on the call | |
6689 | stub. We can't do that for ELFv1 anyway (a function symbol | |
6690 | is defined on a descriptor, not code) and it can be faster at | |
6691 | run-time due to not needing to bounce through a stub. The | |
6692 | dyn_relocs for ifuncs will be applied even in a static | |
6693 | executable. */ | |
6694 | if (!bfd_link_pic (info) | |
6695 | && h->type != STT_GNU_IFUNC | |
6696 | && local) | |
190eb1dd | 6697 | h->dyn_relocs = NULL; |
529fe20e | 6698 | |
e86ce104 AM |
6699 | /* Clear procedure linkage table information for any symbol that |
6700 | won't need a .plt entry. */ | |
411e1bfb AM |
6701 | struct plt_entry *ent; |
6702 | for (ent = h->plt.plist; ent != NULL; ent = ent->next) | |
6703 | if (ent->plt.refcount > 0) | |
6704 | break; | |
8387904d | 6705 | if (ent == NULL |
2d7ad24e AM |
6706 | || (h->type != STT_GNU_IFUNC |
6707 | && local | |
3e04d765 | 6708 | && (htab->can_convert_all_inline_plt |
ed7007c1 | 6709 | || (ppc_elf_hash_entry (h)->tls_mask |
3e04d765 | 6710 | & (TLS_TLS | PLT_KEEP)) != PLT_KEEP))) |
40b8271b | 6711 | { |
411e1bfb | 6712 | h->plt.plist = NULL; |
f5385ebf | 6713 | h->needs_plt = 0; |
d1eca1e4 | 6714 | h->pointer_equality_needed = 0; |
40b8271b | 6715 | } |
8a2058b5 | 6716 | else if (abiversion (info->output_bfd) >= 2) |
a345bc8d | 6717 | { |
d1eca1e4 AM |
6718 | /* Taking a function's address in a read/write section |
6719 | doesn't require us to define the function symbol in the | |
6720 | executable on a global entry stub. A dynamic reloc can | |
8a2058b5 AM |
6721 | be used instead. The reason we prefer a few more dynamic |
6722 | relocs is that calling via a global entry stub costs a | |
6723 | few more instructions, and pointer_equality_needed causes | |
6724 | extra work in ld.so when resolving these symbols. */ | |
529fe20e | 6725 | if (global_entry_stub (h)) |
d1eca1e4 | 6726 | { |
5dbc8b37 | 6727 | if (!_bfd_elf_readonly_dynrelocs (h)) |
529fe20e AM |
6728 | { |
6729 | h->pointer_equality_needed = 0; | |
04383fd1 AM |
6730 | /* If we haven't seen a branch reloc and the symbol |
6731 | isn't an ifunc then we don't need a plt entry. */ | |
529fe20e AM |
6732 | if (!h->needs_plt) |
6733 | h->plt.plist = NULL; | |
6734 | } | |
6735 | else if (!bfd_link_pic (info)) | |
6736 | /* We are going to be defining the function symbol on the | |
6737 | plt stub, so no dyn_relocs needed when non-pic. */ | |
190eb1dd | 6738 | h->dyn_relocs = NULL; |
d1eca1e4 AM |
6739 | } |
6740 | ||
3988aed5 | 6741 | /* ELFv2 function symbols can't have copy relocs. */ |
0a1b45a2 | 6742 | return true; |
3988aed5 AM |
6743 | } |
6744 | else if (!h->needs_plt | |
5dbc8b37 | 6745 | && !_bfd_elf_readonly_dynrelocs (h)) |
3988aed5 | 6746 | { |
04383fd1 AM |
6747 | /* If we haven't seen a branch reloc and the symbol isn't an |
6748 | ifunc then we don't need a plt entry. */ | |
3988aed5 AM |
6749 | h->plt.plist = NULL; |
6750 | h->pointer_equality_needed = 0; | |
0a1b45a2 | 6751 | return true; |
a345bc8d | 6752 | } |
5bd4f169 | 6753 | } |
bbd7ec4a | 6754 | else |
411e1bfb | 6755 | h->plt.plist = NULL; |
5bd4f169 AM |
6756 | |
6757 | /* If this is a weak symbol, and there is a real definition, the | |
6758 | processor independent code will have arranged for us to see the | |
6759 | real definition first, and we can just use the same value. */ | |
60d67dc8 | 6760 | if (h->is_weakalias) |
5bd4f169 | 6761 | { |
60d67dc8 AM |
6762 | struct elf_link_hash_entry *def = weakdef (h); |
6763 | BFD_ASSERT (def->root.type == bfd_link_hash_defined); | |
6764 | h->root.u.def.section = def->root.u.def.section; | |
6765 | h->root.u.def.value = def->root.u.def.value; | |
4a7e5234 AM |
6766 | if (def->root.u.def.section == htab->elf.sdynbss |
6767 | || def->root.u.def.section == htab->elf.sdynrelro) | |
190eb1dd | 6768 | h->dyn_relocs = NULL; |
0a1b45a2 | 6769 | return true; |
5bd4f169 AM |
6770 | } |
6771 | ||
5bd4f169 AM |
6772 | /* If we are creating a shared library, we must presume that the |
6773 | only references to the symbol are via the global offset table. | |
6774 | For such cases we need not do anything here; the relocations will | |
6775 | be handled correctly by relocate_section. */ | |
ec73ddcd | 6776 | if (!bfd_link_executable (info)) |
0a1b45a2 | 6777 | return true; |
5bd4f169 | 6778 | |
65f38f15 AM |
6779 | /* If there are no references to this symbol that do not use the |
6780 | GOT, we don't need to generate a copy reloc. */ | |
f5385ebf | 6781 | if (!h->non_got_ref) |
0a1b45a2 | 6782 | return true; |
65f38f15 | 6783 | |
b186458a | 6784 | /* Don't generate a copy reloc for symbols defined in the executable. */ |
d93d1c80 | 6785 | if (!h->def_dynamic || !h->ref_regular || h->def_regular |
b186458a | 6786 | |
d93d1c80 AM |
6787 | /* If -z nocopyreloc was given, don't generate them either. */ |
6788 | || info->nocopyreloc | |
a127494f | 6789 | |
dce2246a | 6790 | /* If we don't find any dynamic relocs in read-only sections, then |
d93d1c80 | 6791 | we'll be keeping the dynamic relocs and avoiding the copy reloc. */ |
1bdd8fac AM |
6792 | || (ELIMINATE_COPY_RELOCS |
6793 | && !h->needs_copy | |
6794 | && !alias_readonly_dynrelocs (h)) | |
65f38f15 | 6795 | |
d93d1c80 AM |
6796 | /* Protected variables do not work with .dynbss. The copy in |
6797 | .dynbss won't be used by the shared library with the protected | |
6798 | definition for the variable. Text relocations are preferable | |
6799 | to an incorrect program. */ | |
6800 | || h->protected_def) | |
0a1b45a2 | 6801 | return true; |
a127494f | 6802 | |
e1c6cf61 AM |
6803 | if (h->type == STT_FUNC |
6804 | || h->type == STT_GNU_IFUNC) | |
97b639ba | 6805 | { |
e1c6cf61 AM |
6806 | /* .dynbss copies of function symbols only work if we have |
6807 | ELFv1 dot-symbols. ELFv1 compilers since 2004 default to not | |
6808 | use dot-symbols and set the function symbol size to the text | |
6809 | size of the function rather than the size of the descriptor. | |
6810 | That's wrong for copying a descriptor. */ | |
ed7007c1 | 6811 | if (ppc_elf_hash_entry (h)->oh == NULL |
e1c6cf61 | 6812 | || !(h->size == 24 || h->size == 16)) |
0a1b45a2 | 6813 | return true; |
e1c6cf61 AM |
6814 | |
6815 | /* We should never get here, but unfortunately there are old | |
6816 | versions of gcc (circa gcc-3.2) that improperly for the | |
6817 | ELFv1 ABI put initialized function pointers, vtable refs and | |
6818 | suchlike in read-only sections. Allow them to proceed, but | |
6819 | warn that this might break at runtime. */ | |
25f53a85 | 6820 | info->callbacks->einfo |
c1c8c1ef | 6821 | (_("%P: copy reloc against `%pT' requires lazy plt linking; " |
25f53a85 | 6822 | "avoid setting LD_BIND_NOW=1 or upgrade gcc\n"), |
97b639ba AM |
6823 | h->root.root.string); |
6824 | } | |
5d35169e AM |
6825 | |
6826 | /* This is a reference to a symbol defined by a dynamic object which | |
6827 | is not a function. */ | |
6828 | ||
5bd4f169 AM |
6829 | /* We must allocate the symbol in our .dynbss section, which will |
6830 | become part of the .bss section of the executable. There will be | |
6831 | an entry for this symbol in the .dynsym section. The dynamic | |
6832 | object will contain position independent code, so all references | |
6833 | from the dynamic object to this symbol will go through the global | |
6834 | offset table. The dynamic linker will use the .dynsym entry to | |
6835 | determine the address it must put in the global offset table, so | |
6836 | both the dynamic object and the regular object will refer to the | |
6837 | same memory location for the variable. */ | |
5474d94f AM |
6838 | if ((h->root.u.def.section->flags & SEC_READONLY) != 0) |
6839 | { | |
6840 | s = htab->elf.sdynrelro; | |
6841 | srel = htab->elf.sreldynrelro; | |
6842 | } | |
6843 | else | |
6844 | { | |
6845 | s = htab->elf.sdynbss; | |
6846 | srel = htab->elf.srelbss; | |
6847 | } | |
1d7e9d18 | 6848 | if ((h->root.u.def.section->flags & SEC_ALLOC) != 0 && h->size != 0) |
5bd4f169 | 6849 | { |
4a7e5234 AM |
6850 | /* We must generate a R_PPC64_COPY reloc to tell the dynamic |
6851 | linker to copy the initial value out of the dynamic object | |
6852 | and into the runtime process image. */ | |
5474d94f | 6853 | srel->size += sizeof (Elf64_External_Rela); |
f5385ebf | 6854 | h->needs_copy = 1; |
5bd4f169 AM |
6855 | } |
6856 | ||
529fe20e | 6857 | /* We no longer want dyn_relocs. */ |
190eb1dd | 6858 | h->dyn_relocs = NULL; |
6cabe1ea | 6859 | return _bfd_elf_adjust_dynamic_copy (info, h, s); |
5bd4f169 AM |
6860 | } |
6861 | ||
e86ce104 AM |
6862 | /* If given a function descriptor symbol, hide both the function code |
6863 | sym and the descriptor. */ | |
6864 | static void | |
4ce794b7 AM |
6865 | ppc64_elf_hide_symbol (struct bfd_link_info *info, |
6866 | struct elf_link_hash_entry *h, | |
0a1b45a2 | 6867 | bool force_local) |
e86ce104 | 6868 | { |
34814b9f | 6869 | struct ppc_link_hash_entry *eh; |
e86ce104 AM |
6870 | _bfd_elf_link_hash_hide_symbol (info, h, force_local); |
6871 | ||
87469ba2 AM |
6872 | if (ppc_hash_table (info) == NULL) |
6873 | return; | |
6874 | ||
ed7007c1 | 6875 | eh = ppc_elf_hash_entry (h); |
34814b9f | 6876 | if (eh->is_func_descriptor) |
e86ce104 | 6877 | { |
34814b9f | 6878 | struct ppc_link_hash_entry *fh = eh->oh; |
e86ce104 | 6879 | |
721956f4 | 6880 | if (fh == NULL) |
d1329ca3 AM |
6881 | { |
6882 | const char *p, *q; | |
b8ac2841 | 6883 | struct elf_link_hash_table *htab = elf_hash_table (info); |
d1329ca3 AM |
6884 | char save; |
6885 | ||
6886 | /* We aren't supposed to use alloca in BFD because on | |
6887 | systems which do not have alloca the version in libiberty | |
6888 | calls xmalloc, which might cause the program to crash | |
6889 | when it runs out of memory. This function doesn't have a | |
6890 | return status, so there's no way to gracefully return an | |
6891 | error. So cheat. We know that string[-1] can be safely | |
34814b9f AM |
6892 | accessed; It's either a string in an ELF string table, |
6893 | or allocated in an objalloc structure. */ | |
d1329ca3 | 6894 | |
34814b9f | 6895 | p = eh->elf.root.root.string - 1; |
d1329ca3 AM |
6896 | save = *p; |
6897 | *(char *) p = '.'; | |
0a1b45a2 AM |
6898 | fh = ppc_elf_hash_entry (elf_link_hash_lookup (htab, p, false, |
6899 | false, false)); | |
d1329ca3 AM |
6900 | *(char *) p = save; |
6901 | ||
6902 | /* Unfortunately, if it so happens that the string we were | |
6903 | looking for was allocated immediately before this string, | |
6904 | then we overwrote the string terminator. That's the only | |
6905 | reason the lookup should fail. */ | |
6906 | if (fh == NULL) | |
6907 | { | |
34814b9f AM |
6908 | q = eh->elf.root.root.string + strlen (eh->elf.root.root.string); |
6909 | while (q >= eh->elf.root.root.string && *q == *p) | |
d1329ca3 | 6910 | --q, --p; |
34814b9f | 6911 | if (q < eh->elf.root.root.string && *p == '.') |
0a1b45a2 AM |
6912 | fh = ppc_elf_hash_entry (elf_link_hash_lookup (htab, p, false, |
6913 | false, false)); | |
d1329ca3 AM |
6914 | } |
6915 | if (fh != NULL) | |
6916 | { | |
34814b9f AM |
6917 | eh->oh = fh; |
6918 | fh->oh = eh; | |
d1329ca3 AM |
6919 | } |
6920 | } | |
e86ce104 | 6921 | if (fh != NULL) |
34814b9f | 6922 | _bfd_elf_link_hash_hide_symbol (info, &fh->elf, force_local); |
e86ce104 AM |
6923 | } |
6924 | } | |
6925 | ||
0a1b45a2 | 6926 | static bool |
8843416a AM |
6927 | get_sym_h (struct elf_link_hash_entry **hp, |
6928 | Elf_Internal_Sym **symp, | |
6929 | asection **symsecp, | |
f961d9dd | 6930 | unsigned char **tls_maskp, |
8843416a AM |
6931 | Elf_Internal_Sym **locsymsp, |
6932 | unsigned long r_symndx, | |
6933 | bfd *ibfd) | |
411e1bfb | 6934 | { |
0ffa91dd | 6935 | Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (ibfd); |
411e1bfb AM |
6936 | |
6937 | if (r_symndx >= symtab_hdr->sh_info) | |
6938 | { | |
6939 | struct elf_link_hash_entry **sym_hashes = elf_sym_hashes (ibfd); | |
6940 | struct elf_link_hash_entry *h; | |
6941 | ||
6942 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; | |
b31867b6 | 6943 | h = elf_follow_link (h); |
411e1bfb AM |
6944 | |
6945 | if (hp != NULL) | |
6946 | *hp = h; | |
6947 | ||
6948 | if (symp != NULL) | |
6949 | *symp = NULL; | |
6950 | ||
6951 | if (symsecp != NULL) | |
6952 | { | |
6953 | asection *symsec = NULL; | |
6954 | if (h->root.type == bfd_link_hash_defined | |
6955 | || h->root.type == bfd_link_hash_defweak) | |
6956 | symsec = h->root.u.def.section; | |
6957 | *symsecp = symsec; | |
6958 | } | |
6959 | ||
e7b938ca | 6960 | if (tls_maskp != NULL) |
ed7007c1 | 6961 | *tls_maskp = &ppc_elf_hash_entry (h)->tls_mask; |
411e1bfb AM |
6962 | } |
6963 | else | |
6964 | { | |
6965 | Elf_Internal_Sym *sym; | |
6966 | Elf_Internal_Sym *locsyms = *locsymsp; | |
6967 | ||
6968 | if (locsyms == NULL) | |
6969 | { | |
6970 | locsyms = (Elf_Internal_Sym *) symtab_hdr->contents; | |
6971 | if (locsyms == NULL) | |
6972 | locsyms = bfd_elf_get_elf_syms (ibfd, symtab_hdr, | |
6973 | symtab_hdr->sh_info, | |
6974 | 0, NULL, NULL, NULL); | |
6975 | if (locsyms == NULL) | |
0a1b45a2 | 6976 | return false; |
411e1bfb AM |
6977 | *locsymsp = locsyms; |
6978 | } | |
6979 | sym = locsyms + r_symndx; | |
6980 | ||
6981 | if (hp != NULL) | |
6982 | *hp = NULL; | |
6983 | ||
6984 | if (symp != NULL) | |
6985 | *symp = sym; | |
6986 | ||
6987 | if (symsecp != NULL) | |
cb33740c | 6988 | *symsecp = bfd_section_from_elf_index (ibfd, sym->st_shndx); |
411e1bfb | 6989 | |
e7b938ca | 6990 | if (tls_maskp != NULL) |
411e1bfb AM |
6991 | { |
6992 | struct got_entry **lgot_ents; | |
f961d9dd | 6993 | unsigned char *tls_mask; |
411e1bfb | 6994 | |
e7b938ca | 6995 | tls_mask = NULL; |
411e1bfb AM |
6996 | lgot_ents = elf_local_got_ents (ibfd); |
6997 | if (lgot_ents != NULL) | |
6998 | { | |
e054468f AM |
6999 | struct plt_entry **local_plt = (struct plt_entry **) |
7000 | (lgot_ents + symtab_hdr->sh_info); | |
f961d9dd | 7001 | unsigned char *lgot_masks = (unsigned char *) |
e054468f | 7002 | (local_plt + symtab_hdr->sh_info); |
e7b938ca | 7003 | tls_mask = &lgot_masks[r_symndx]; |
411e1bfb | 7004 | } |
e7b938ca | 7005 | *tls_maskp = tls_mask; |
411e1bfb AM |
7006 | } |
7007 | } | |
0a1b45a2 | 7008 | return true; |
411e1bfb AM |
7009 | } |
7010 | ||
e7b938ca | 7011 | /* Returns TLS_MASKP for the given REL symbol. Function return is 0 on |
951fd09b | 7012 | error, 2 on a toc GD type suitable for optimization, 3 on a toc LD |
ad8e1ba5 | 7013 | type suitable for optimization, and 1 otherwise. */ |
951fd09b AM |
7014 | |
7015 | static int | |
f961d9dd | 7016 | get_tls_mask (unsigned char **tls_maskp, |
3a71aa26 AM |
7017 | unsigned long *toc_symndx, |
7018 | bfd_vma *toc_addend, | |
0d4792f7 | 7019 | Elf_Internal_Sym **locsymsp, |
3a71aa26 AM |
7020 | const Elf_Internal_Rela *rel, |
7021 | bfd *ibfd) | |
411e1bfb AM |
7022 | { |
7023 | unsigned long r_symndx; | |
0d4792f7 | 7024 | int next_r; |
411e1bfb AM |
7025 | struct elf_link_hash_entry *h; |
7026 | Elf_Internal_Sym *sym; | |
7027 | asection *sec; | |
7028 | bfd_vma off; | |
7029 | ||
7030 | r_symndx = ELF64_R_SYM (rel->r_info); | |
e7b938ca | 7031 | if (!get_sym_h (&h, &sym, &sec, tls_maskp, locsymsp, r_symndx, ibfd)) |
951fd09b | 7032 | return 0; |
411e1bfb | 7033 | |
37da22e5 AM |
7034 | if ((*tls_maskp != NULL |
7035 | && (**tls_maskp & TLS_TLS) != 0 | |
7036 | && **tls_maskp != (TLS_TLS | TLS_MARK)) | |
411e1bfb | 7037 | || sec == NULL |
6bee8834 | 7038 | || ppc64_elf_section_data (sec) == NULL |
7c8fe5c4 | 7039 | || ppc64_elf_section_data (sec)->sec_type != sec_toc) |
951fd09b | 7040 | return 1; |
411e1bfb AM |
7041 | |
7042 | /* Look inside a TOC section too. */ | |
7043 | if (h != NULL) | |
7044 | { | |
7045 | BFD_ASSERT (h->root.type == bfd_link_hash_defined); | |
7046 | off = h->root.u.def.value; | |
7047 | } | |
7048 | else | |
7049 | off = sym->st_value; | |
7050 | off += rel->r_addend; | |
7051 | BFD_ASSERT (off % 8 == 0); | |
3a71aa26 AM |
7052 | r_symndx = ppc64_elf_section_data (sec)->u.toc.symndx[off / 8]; |
7053 | next_r = ppc64_elf_section_data (sec)->u.toc.symndx[off / 8 + 1]; | |
0d4792f7 AM |
7054 | if (toc_symndx != NULL) |
7055 | *toc_symndx = r_symndx; | |
3a71aa26 AM |
7056 | if (toc_addend != NULL) |
7057 | *toc_addend = ppc64_elf_section_data (sec)->u.toc.add[off / 8]; | |
7058 | if (!get_sym_h (&h, &sym, &sec, tls_maskp, locsymsp, r_symndx, ibfd)) | |
7059 | return 0; | |
854b41e7 | 7060 | if ((h == NULL || is_static_defined (h)) |
0d4792f7 AM |
7061 | && (next_r == -1 || next_r == -2)) |
7062 | return 1 - next_r; | |
951fd09b | 7063 | return 1; |
411e1bfb AM |
7064 | } |
7065 | ||
3b421ab3 AM |
7066 | /* Find (or create) an entry in the tocsave hash table. */ |
7067 | ||
7068 | static struct tocsave_entry * | |
7069 | tocsave_find (struct ppc_link_hash_table *htab, | |
7070 | enum insert_option insert, | |
7071 | Elf_Internal_Sym **local_syms, | |
7072 | const Elf_Internal_Rela *irela, | |
7073 | bfd *ibfd) | |
7074 | { | |
7075 | unsigned long r_indx; | |
7076 | struct elf_link_hash_entry *h; | |
7077 | Elf_Internal_Sym *sym; | |
7078 | struct tocsave_entry ent, *p; | |
7079 | hashval_t hash; | |
7080 | struct tocsave_entry **slot; | |
7081 | ||
7082 | r_indx = ELF64_R_SYM (irela->r_info); | |
7083 | if (!get_sym_h (&h, &sym, &ent.sec, NULL, local_syms, r_indx, ibfd)) | |
7084 | return NULL; | |
7085 | if (ent.sec == NULL || ent.sec->output_section == NULL) | |
7086 | { | |
4eca0228 | 7087 | _bfd_error_handler |
871b3ab2 | 7088 | (_("%pB: undefined symbol on R_PPC64_TOCSAVE relocation"), ibfd); |
3b421ab3 AM |
7089 | return NULL; |
7090 | } | |
7091 | ||
7092 | if (h != NULL) | |
7093 | ent.offset = h->root.u.def.value; | |
7094 | else | |
7095 | ent.offset = sym->st_value; | |
7096 | ent.offset += irela->r_addend; | |
7097 | ||
7098 | hash = tocsave_htab_hash (&ent); | |
7099 | slot = ((struct tocsave_entry **) | |
7100 | htab_find_slot_with_hash (htab->tocsave_htab, &ent, hash, insert)); | |
7101 | if (slot == NULL) | |
7102 | return NULL; | |
7103 | ||
7104 | if (*slot == NULL) | |
7105 | { | |
7106 | p = (struct tocsave_entry *) bfd_alloc (ibfd, sizeof (*p)); | |
7107 | if (p == NULL) | |
7108 | return NULL; | |
7109 | *p = ent; | |
7110 | *slot = p; | |
7111 | } | |
7112 | return *slot; | |
7113 | } | |
7114 | ||
754021d0 | 7115 | /* Adjust all global syms defined in opd sections. In gcc generated |
8387904d | 7116 | code for the old ABI, these will already have been done. */ |
754021d0 | 7117 | |
0a1b45a2 | 7118 | static bool |
754021d0 AM |
7119 | adjust_opd_syms (struct elf_link_hash_entry *h, void *inf ATTRIBUTE_UNUSED) |
7120 | { | |
7121 | struct ppc_link_hash_entry *eh; | |
7122 | asection *sym_sec; | |
74f0fb50 | 7123 | struct _opd_sec_data *opd; |
754021d0 AM |
7124 | |
7125 | if (h->root.type == bfd_link_hash_indirect) | |
0a1b45a2 | 7126 | return true; |
754021d0 | 7127 | |
754021d0 AM |
7128 | if (h->root.type != bfd_link_hash_defined |
7129 | && h->root.type != bfd_link_hash_defweak) | |
0a1b45a2 | 7130 | return true; |
754021d0 | 7131 | |
ed7007c1 | 7132 | eh = ppc_elf_hash_entry (h); |
754021d0 | 7133 | if (eh->adjust_done) |
0a1b45a2 | 7134 | return true; |
754021d0 AM |
7135 | |
7136 | sym_sec = eh->elf.root.u.def.section; | |
74f0fb50 AM |
7137 | opd = get_opd_info (sym_sec); |
7138 | if (opd != NULL && opd->adjust != NULL) | |
754021d0 | 7139 | { |
51aecdc5 | 7140 | long adjust = opd->adjust[OPD_NDX (eh->elf.root.u.def.value)]; |
4025353c AM |
7141 | if (adjust == -1) |
7142 | { | |
7143 | /* This entry has been deleted. */ | |
b3fac117 | 7144 | asection *dsec = ppc64_elf_tdata (sym_sec->owner)->deleted_section; |
81688140 AM |
7145 | if (dsec == NULL) |
7146 | { | |
7147 | for (dsec = sym_sec->owner->sections; dsec; dsec = dsec->next) | |
dbaa2011 | 7148 | if (discarded_section (dsec)) |
81688140 | 7149 | { |
b3fac117 | 7150 | ppc64_elf_tdata (sym_sec->owner)->deleted_section = dsec; |
81688140 AM |
7151 | break; |
7152 | } | |
7153 | } | |
4025353c | 7154 | eh->elf.root.u.def.value = 0; |
81688140 | 7155 | eh->elf.root.u.def.section = dsec; |
4025353c AM |
7156 | } |
7157 | else | |
7158 | eh->elf.root.u.def.value += adjust; | |
754021d0 AM |
7159 | eh->adjust_done = 1; |
7160 | } | |
0a1b45a2 | 7161 | return true; |
754021d0 AM |
7162 | } |
7163 | ||
8c1d1bb8 | 7164 | /* Handles decrementing dynamic reloc counts for the reloc specified by |
19e08130 | 7165 | R_INFO in section SEC. If LOCAL_SYMS is NULL, then H and SYM |
8c1d1bb8 AM |
7166 | have already been determined. */ |
7167 | ||
0a1b45a2 | 7168 | static bool |
1657026c | 7169 | dec_dynrel_count (const Elf_Internal_Rela *rel, |
8c1d1bb8 AM |
7170 | asection *sec, |
7171 | struct bfd_link_info *info, | |
7172 | Elf_Internal_Sym **local_syms, | |
7173 | struct elf_link_hash_entry *h, | |
19e08130 | 7174 | Elf_Internal_Sym *sym) |
8c1d1bb8 AM |
7175 | { |
7176 | enum elf_ppc64_reloc_type r_type; | |
19e08130 | 7177 | asection *sym_sec = NULL; |
8c1d1bb8 AM |
7178 | |
7179 | /* Can this reloc be dynamic? This switch, and later tests here | |
7180 | should be kept in sync with the code in check_relocs. */ | |
1657026c | 7181 | r_type = ELF64_R_TYPE (rel->r_info); |
8c1d1bb8 AM |
7182 | switch (r_type) |
7183 | { | |
7184 | default: | |
0a1b45a2 | 7185 | return true; |
8c1d1bb8 | 7186 | |
1bdd8fac AM |
7187 | case R_PPC64_TOC16: |
7188 | case R_PPC64_TOC16_DS: | |
7189 | case R_PPC64_TOC16_LO: | |
7190 | case R_PPC64_TOC16_HI: | |
7191 | case R_PPC64_TOC16_HA: | |
7192 | case R_PPC64_TOC16_LO_DS: | |
7193 | if (h == NULL) | |
0a1b45a2 | 7194 | return true; |
1bdd8fac AM |
7195 | break; |
7196 | ||
8c1d1bb8 AM |
7197 | case R_PPC64_TPREL16: |
7198 | case R_PPC64_TPREL16_LO: | |
7199 | case R_PPC64_TPREL16_HI: | |
7200 | case R_PPC64_TPREL16_HA: | |
7201 | case R_PPC64_TPREL16_DS: | |
7202 | case R_PPC64_TPREL16_LO_DS: | |
f9c6b907 AM |
7203 | case R_PPC64_TPREL16_HIGH: |
7204 | case R_PPC64_TPREL16_HIGHA: | |
8c1d1bb8 AM |
7205 | case R_PPC64_TPREL16_HIGHER: |
7206 | case R_PPC64_TPREL16_HIGHERA: | |
7207 | case R_PPC64_TPREL16_HIGHEST: | |
7208 | case R_PPC64_TPREL16_HIGHESTA: | |
8c1d1bb8 | 7209 | case R_PPC64_TPREL64: |
c213164a | 7210 | case R_PPC64_TPREL34: |
8c1d1bb8 AM |
7211 | case R_PPC64_DTPMOD64: |
7212 | case R_PPC64_DTPREL64: | |
7213 | case R_PPC64_ADDR64: | |
7214 | case R_PPC64_REL30: | |
7215 | case R_PPC64_REL32: | |
7216 | case R_PPC64_REL64: | |
7217 | case R_PPC64_ADDR14: | |
7218 | case R_PPC64_ADDR14_BRNTAKEN: | |
7219 | case R_PPC64_ADDR14_BRTAKEN: | |
7220 | case R_PPC64_ADDR16: | |
7221 | case R_PPC64_ADDR16_DS: | |
7222 | case R_PPC64_ADDR16_HA: | |
7223 | case R_PPC64_ADDR16_HI: | |
f9c6b907 AM |
7224 | case R_PPC64_ADDR16_HIGH: |
7225 | case R_PPC64_ADDR16_HIGHA: | |
8c1d1bb8 AM |
7226 | case R_PPC64_ADDR16_HIGHER: |
7227 | case R_PPC64_ADDR16_HIGHERA: | |
7228 | case R_PPC64_ADDR16_HIGHEST: | |
7229 | case R_PPC64_ADDR16_HIGHESTA: | |
7230 | case R_PPC64_ADDR16_LO: | |
7231 | case R_PPC64_ADDR16_LO_DS: | |
7232 | case R_PPC64_ADDR24: | |
7233 | case R_PPC64_ADDR32: | |
7234 | case R_PPC64_UADDR16: | |
7235 | case R_PPC64_UADDR32: | |
7236 | case R_PPC64_UADDR64: | |
7237 | case R_PPC64_TOC: | |
5663e321 AM |
7238 | case R_PPC64_D34: |
7239 | case R_PPC64_D34_LO: | |
7240 | case R_PPC64_D34_HI30: | |
7241 | case R_PPC64_D34_HA30: | |
7242 | case R_PPC64_ADDR16_HIGHER34: | |
7243 | case R_PPC64_ADDR16_HIGHERA34: | |
7244 | case R_PPC64_ADDR16_HIGHEST34: | |
7245 | case R_PPC64_ADDR16_HIGHESTA34: | |
7246 | case R_PPC64_D28: | |
8c1d1bb8 AM |
7247 | break; |
7248 | } | |
7249 | ||
7250 | if (local_syms != NULL) | |
7251 | { | |
7252 | unsigned long r_symndx; | |
8c1d1bb8 AM |
7253 | bfd *ibfd = sec->owner; |
7254 | ||
1657026c | 7255 | r_symndx = ELF64_R_SYM (rel->r_info); |
8c1d1bb8 | 7256 | if (!get_sym_h (&h, &sym, &sym_sec, NULL, local_syms, r_symndx, ibfd)) |
0a1b45a2 | 7257 | return false; |
8c1d1bb8 AM |
7258 | } |
7259 | ||
ec73ddcd | 7260 | if ((h != NULL |
c99d782d | 7261 | && !SYMBOL_REFERENCES_LOCAL (info, h)) |
ec73ddcd | 7262 | || (bfd_link_pic (info) |
3a3a4c1f AM |
7263 | && (h != NULL |
7264 | ? !bfd_is_abs_symbol (&h->root) | |
7265 | : sym_sec != bfd_abs_section_ptr) | |
ec73ddcd AM |
7266 | && must_be_dyn_reloc (info, r_type)) |
7267 | || (!bfd_link_pic (info) | |
7268 | && (h != NULL | |
7269 | ? h->type == STT_GNU_IFUNC | |
7270 | : ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC))) | |
8c1d1bb8 AM |
7271 | ; |
7272 | else | |
0a1b45a2 | 7273 | return true; |
8c1d1bb8 AM |
7274 | |
7275 | if (h != NULL) | |
6edfbbad | 7276 | { |
1657026c AM |
7277 | struct ppc_dyn_relocs *p; |
7278 | struct ppc_dyn_relocs **pp; | |
7279 | pp = (struct ppc_dyn_relocs **) &h->dyn_relocs; | |
19e08130 AM |
7280 | |
7281 | /* elf_gc_sweep may have already removed all dyn relocs associated | |
7282 | with local syms for a given section. Also, symbol flags are | |
7283 | changed by elf_gc_sweep_symbol, confusing the test above. Don't | |
7284 | report a dynreloc miscount. */ | |
7285 | if (*pp == NULL && info->gc_sections) | |
0a1b45a2 | 7286 | return true; |
19e08130 AM |
7287 | |
7288 | while ((p = *pp) != NULL) | |
60124e18 | 7289 | { |
19e08130 AM |
7290 | if (p->sec == sec) |
7291 | { | |
7292 | if (!must_be_dyn_reloc (info, r_type)) | |
7293 | p->pc_count -= 1; | |
1657026c AM |
7294 | if ((r_type == R_PPC64_ADDR64 || r_type == R_PPC64_TOC) |
7295 | && rel->r_offset % 2 == 0 | |
8ffb6df2 | 7296 | && sec->alignment_power != 0) |
1657026c | 7297 | p->rel_count -= 1; |
19e08130 AM |
7298 | p->count -= 1; |
7299 | if (p->count == 0) | |
7300 | *pp = p->next; | |
0a1b45a2 | 7301 | return true; |
19e08130 AM |
7302 | } |
7303 | pp = &p->next; | |
60124e18 | 7304 | } |
6edfbbad | 7305 | } |
19e08130 AM |
7306 | else |
7307 | { | |
1657026c AM |
7308 | struct ppc_local_dyn_relocs *p; |
7309 | struct ppc_local_dyn_relocs **pp; | |
19e08130 | 7310 | void *vpp; |
0a1b45a2 | 7311 | bool is_ifunc; |
8c1d1bb8 | 7312 | |
19e08130 AM |
7313 | if (local_syms == NULL) |
7314 | sym_sec = bfd_section_from_elf_index (sec->owner, sym->st_shndx); | |
7315 | if (sym_sec == NULL) | |
7316 | sym_sec = sec; | |
c57da1a7 | 7317 | |
19e08130 | 7318 | vpp = &elf_section_data (sym_sec)->local_dynrel; |
1657026c | 7319 | pp = (struct ppc_local_dyn_relocs **) vpp; |
19e08130 AM |
7320 | |
7321 | if (*pp == NULL && info->gc_sections) | |
0a1b45a2 | 7322 | return true; |
19e08130 AM |
7323 | |
7324 | is_ifunc = ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC; | |
7325 | while ((p = *pp) != NULL) | |
8c1d1bb8 | 7326 | { |
19e08130 AM |
7327 | if (p->sec == sec && p->ifunc == is_ifunc) |
7328 | { | |
1657026c AM |
7329 | if ((r_type == R_PPC64_ADDR64 || r_type == R_PPC64_TOC) |
7330 | && rel->r_offset % 2 == 0 | |
8ffb6df2 | 7331 | && sec->alignment_power != 0) |
1657026c | 7332 | p->rel_count -= 1; |
19e08130 AM |
7333 | p->count -= 1; |
7334 | if (p->count == 0) | |
7335 | *pp = p->next; | |
0a1b45a2 | 7336 | return true; |
19e08130 AM |
7337 | } |
7338 | pp = &p->next; | |
8c1d1bb8 | 7339 | } |
8c1d1bb8 AM |
7340 | } |
7341 | ||
695344c0 | 7342 | /* xgettext:c-format */ |
cf97bcb0 AM |
7343 | _bfd_error_handler (_("dynreloc miscount for %pB, section %pA"), |
7344 | sec->owner, sec); | |
8c1d1bb8 | 7345 | bfd_set_error (bfd_error_bad_value); |
0a1b45a2 | 7346 | return false; |
8c1d1bb8 AM |
7347 | } |
7348 | ||
754021d0 AM |
7349 | /* Remove unused Official Procedure Descriptor entries. Currently we |
7350 | only remove those associated with functions in discarded link-once | |
7351 | sections, or weakly defined functions that have been overridden. It | |
7352 | would be possible to remove many more entries for statically linked | |
7353 | applications. */ | |
7354 | ||
0a1b45a2 | 7355 | bool |
e7d1c40c | 7356 | ppc64_elf_edit_opd (struct bfd_link_info *info) |
1e2f5b6e AM |
7357 | { |
7358 | bfd *ibfd; | |
0a1b45a2 | 7359 | bool some_edited = false; |
3f764659 | 7360 | asection *need_pad = NULL; |
e7d1c40c AM |
7361 | struct ppc_link_hash_table *htab; |
7362 | ||
7363 | htab = ppc_hash_table (info); | |
7364 | if (htab == NULL) | |
0a1b45a2 | 7365 | return false; |
1e2f5b6e | 7366 | |
c72f2fb2 | 7367 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next) |
1e2f5b6e AM |
7368 | { |
7369 | asection *sec; | |
7370 | Elf_Internal_Rela *relstart, *rel, *relend; | |
7371 | Elf_Internal_Shdr *symtab_hdr; | |
6cdc0ccc | 7372 | Elf_Internal_Sym *local_syms; |
74f0fb50 | 7373 | struct _opd_sec_data *opd; |
0a1b45a2 | 7374 | bool need_edit, add_aux_fields, broken; |
3f764659 | 7375 | bfd_size_type cnt_16b = 0; |
1e2f5b6e | 7376 | |
854b41e7 AM |
7377 | if (!is_ppc64_elf (ibfd)) |
7378 | continue; | |
7379 | ||
1e2f5b6e | 7380 | sec = bfd_get_section_by_name (ibfd, ".opd"); |
81ff113f AM |
7381 | if (sec == NULL |
7382 | || sec->size == 0 | |
7383 | || (sec->flags & SEC_HAS_CONTENTS) == 0) | |
1e2f5b6e AM |
7384 | continue; |
7385 | ||
dbaa2011 | 7386 | if (sec->sec_info_type == SEC_INFO_TYPE_JUST_SYMS) |
4b85d634 AM |
7387 | continue; |
7388 | ||
1e2f5b6e AM |
7389 | if (sec->output_section == bfd_abs_section_ptr) |
7390 | continue; | |
7391 | ||
7392 | /* Look through the section relocs. */ | |
7393 | if ((sec->flags & SEC_RELOC) == 0 || sec->reloc_count == 0) | |
7394 | continue; | |
7395 | ||
6cdc0ccc | 7396 | local_syms = NULL; |
0ffa91dd | 7397 | symtab_hdr = &elf_symtab_hdr (ibfd); |
1e2f5b6e AM |
7398 | |
7399 | /* Read the relocations. */ | |
4ce794b7 | 7400 | relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL, |
45d6a902 | 7401 | info->keep_memory); |
1e2f5b6e | 7402 | if (relstart == NULL) |
0a1b45a2 | 7403 | return false; |
1e2f5b6e AM |
7404 | |
7405 | /* First run through the relocs to check they are sane, and to | |
7406 | determine whether we need to edit this opd section. */ | |
0a1b45a2 AM |
7407 | need_edit = false; |
7408 | broken = false; | |
3f764659 | 7409 | need_pad = sec; |
1e2f5b6e | 7410 | relend = relstart + sec->reloc_count; |
50bc7936 | 7411 | for (rel = relstart; rel < relend; ) |
1e2f5b6e | 7412 | { |
04c9666a | 7413 | enum elf_ppc64_reloc_type r_type; |
1e2f5b6e AM |
7414 | unsigned long r_symndx; |
7415 | asection *sym_sec; | |
7416 | struct elf_link_hash_entry *h; | |
7417 | Elf_Internal_Sym *sym; | |
51aecdc5 | 7418 | bfd_vma offset; |
1e2f5b6e | 7419 | |
51aecdc5 | 7420 | /* .opd contains an array of 16 or 24 byte entries. We're |
1e2f5b6e AM |
7421 | only interested in the reloc pointing to a function entry |
7422 | point. */ | |
51aecdc5 AM |
7423 | offset = rel->r_offset; |
7424 | if (rel + 1 == relend | |
7425 | || rel[1].r_offset != offset + 8) | |
1e2f5b6e AM |
7426 | { |
7427 | /* If someone messes with .opd alignment then after a | |
7428 | "ld -r" we might have padding in the middle of .opd. | |
7429 | Also, there's nothing to prevent someone putting | |
7430 | something silly in .opd with the assembler. No .opd | |
b34976b6 | 7431 | optimization for them! */ |
3f764659 | 7432 | broken_opd: |
4eca0228 | 7433 | _bfd_error_handler |
871b3ab2 | 7434 | (_("%pB: .opd is not a regular array of opd entries"), ibfd); |
0a1b45a2 | 7435 | broken = true; |
1e2f5b6e AM |
7436 | break; |
7437 | } | |
7438 | ||
50bc7936 AM |
7439 | if ((r_type = ELF64_R_TYPE (rel->r_info)) != R_PPC64_ADDR64 |
7440 | || (r_type = ELF64_R_TYPE ((rel + 1)->r_info)) != R_PPC64_TOC) | |
7441 | { | |
4eca0228 | 7442 | _bfd_error_handler |
695344c0 | 7443 | /* xgettext:c-format */ |
871b3ab2 | 7444 | (_("%pB: unexpected reloc type %u in .opd section"), |
d003868e | 7445 | ibfd, r_type); |
0a1b45a2 | 7446 | broken = true; |
50bc7936 AM |
7447 | break; |
7448 | } | |
7449 | ||
1e2f5b6e | 7450 | r_symndx = ELF64_R_SYM (rel->r_info); |
411e1bfb AM |
7451 | if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, |
7452 | r_symndx, ibfd)) | |
50bc7936 | 7453 | goto error_ret; |
1e2f5b6e AM |
7454 | |
7455 | if (sym_sec == NULL || sym_sec->owner == NULL) | |
7456 | { | |
411e1bfb AM |
7457 | const char *sym_name; |
7458 | if (h != NULL) | |
7459 | sym_name = h->root.root.string; | |
7460 | else | |
26c61ae5 L |
7461 | sym_name = bfd_elf_sym_name (ibfd, symtab_hdr, sym, |
7462 | sym_sec); | |
411e1bfb | 7463 | |
4eca0228 | 7464 | _bfd_error_handler |
695344c0 | 7465 | /* xgettext:c-format */ |
871b3ab2 | 7466 | (_("%pB: undefined sym `%s' in .opd section"), |
d003868e | 7467 | ibfd, sym_name); |
0a1b45a2 | 7468 | broken = true; |
1e2f5b6e AM |
7469 | break; |
7470 | } | |
7471 | ||
51020317 AM |
7472 | /* opd entries are always for functions defined in the |
7473 | current input bfd. If the symbol isn't defined in the | |
7474 | input bfd, then we won't be using the function in this | |
7475 | bfd; It must be defined in a linkonce section in another | |
7476 | bfd, or is weak. It's also possible that we are | |
7477 | discarding the function due to a linker script /DISCARD/, | |
7478 | which we test for via the output_section. */ | |
7479 | if (sym_sec->owner != ibfd | |
7480 | || sym_sec->output_section == bfd_abs_section_ptr) | |
0a1b45a2 | 7481 | need_edit = true; |
1e2f5b6e | 7482 | |
50bc7936 | 7483 | rel += 2; |
51aecdc5 AM |
7484 | if (rel + 1 == relend |
7485 | || (rel + 2 < relend | |
7486 | && ELF64_R_TYPE (rel[2].r_info) == R_PPC64_TOC)) | |
7487 | ++rel; | |
7488 | ||
7489 | if (rel == relend) | |
3f764659 JJ |
7490 | { |
7491 | if (sec->size == offset + 24) | |
7492 | { | |
7493 | need_pad = NULL; | |
7494 | break; | |
7495 | } | |
51aecdc5 | 7496 | if (sec->size == offset + 16) |
3f764659 JJ |
7497 | { |
7498 | cnt_16b++; | |
7499 | break; | |
7500 | } | |
7501 | goto broken_opd; | |
7502 | } | |
3f764659 JJ |
7503 | else if (rel + 1 < relend |
7504 | && ELF64_R_TYPE (rel[0].r_info) == R_PPC64_ADDR64 | |
7505 | && ELF64_R_TYPE (rel[1].r_info) == R_PPC64_TOC) | |
7506 | { | |
51aecdc5 AM |
7507 | if (rel[0].r_offset == offset + 16) |
7508 | cnt_16b++; | |
7509 | else if (rel[0].r_offset != offset + 24) | |
7510 | goto broken_opd; | |
3f764659 JJ |
7511 | } |
7512 | else | |
7513 | goto broken_opd; | |
1e2f5b6e AM |
7514 | } |
7515 | ||
e7d1c40c | 7516 | add_aux_fields = htab->params->non_overlapping_opd && cnt_16b > 0; |
3f764659 | 7517 | |
51aecdc5 | 7518 | if (!broken && (need_edit || add_aux_fields)) |
1e2f5b6e AM |
7519 | { |
7520 | Elf_Internal_Rela *write_rel; | |
d4730f92 | 7521 | Elf_Internal_Shdr *rel_hdr; |
1e2f5b6e | 7522 | bfd_byte *rptr, *wptr; |
983bddc8 | 7523 | bfd_byte *new_contents; |
74f0fb50 AM |
7524 | bfd_size_type amt; |
7525 | ||
983bddc8 | 7526 | new_contents = NULL; |
51aecdc5 | 7527 | amt = OPD_NDX (sec->size) * sizeof (long); |
74f0fb50 | 7528 | opd = &ppc64_elf_section_data (sec)->u.opd; |
33c0ec9d | 7529 | opd->adjust = bfd_zalloc (sec->owner, amt); |
74f0fb50 | 7530 | if (opd->adjust == NULL) |
0a1b45a2 | 7531 | return false; |
1e2f5b6e AM |
7532 | |
7533 | /* This seems a waste of time as input .opd sections are all | |
7534 | zeros as generated by gcc, but I suppose there's no reason | |
7535 | this will always be so. We might start putting something in | |
7536 | the third word of .opd entries. */ | |
7537 | if ((sec->flags & SEC_IN_MEMORY) == 0) | |
7538 | { | |
eea6121a AM |
7539 | bfd_byte *loc; |
7540 | if (!bfd_malloc_and_get_section (ibfd, sec, &loc)) | |
6cdc0ccc | 7541 | { |
c9594989 | 7542 | free (loc); |
50bc7936 | 7543 | error_ret: |
c9594989 | 7544 | if (symtab_hdr->contents != (unsigned char *) local_syms) |
6cdc0ccc | 7545 | free (local_syms); |
6cdc0ccc AM |
7546 | if (elf_section_data (sec)->relocs != relstart) |
7547 | free (relstart); | |
0a1b45a2 | 7548 | return false; |
6cdc0ccc | 7549 | } |
1e2f5b6e AM |
7550 | sec->contents = loc; |
7551 | sec->flags |= (SEC_IN_MEMORY | SEC_HAS_CONTENTS); | |
7552 | } | |
7553 | ||
7554 | elf_section_data (sec)->relocs = relstart; | |
7555 | ||
3f764659 | 7556 | new_contents = sec->contents; |
3f764659 JJ |
7557 | if (add_aux_fields) |
7558 | { | |
7559 | new_contents = bfd_malloc (sec->size + cnt_16b * 8); | |
7560 | if (new_contents == NULL) | |
0a1b45a2 | 7561 | return false; |
51aecdc5 | 7562 | need_pad = NULL; |
3f764659 | 7563 | } |
b4f4e59f AM |
7564 | wptr = new_contents; |
7565 | rptr = sec->contents; | |
1e2f5b6e | 7566 | write_rel = relstart; |
51aecdc5 | 7567 | for (rel = relstart; rel < relend; ) |
1e2f5b6e | 7568 | { |
50bc7936 AM |
7569 | unsigned long r_symndx; |
7570 | asection *sym_sec; | |
7571 | struct elf_link_hash_entry *h; | |
51aecdc5 | 7572 | struct ppc_link_hash_entry *fdh = NULL; |
50bc7936 | 7573 | Elf_Internal_Sym *sym; |
51aecdc5 AM |
7574 | long opd_ent_size; |
7575 | Elf_Internal_Rela *next_rel; | |
0a1b45a2 | 7576 | bool skip; |
50bc7936 AM |
7577 | |
7578 | r_symndx = ELF64_R_SYM (rel->r_info); | |
7579 | if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, | |
d37c89e5 | 7580 | r_symndx, ibfd)) |
50bc7936 AM |
7581 | goto error_ret; |
7582 | ||
51aecdc5 AM |
7583 | next_rel = rel + 2; |
7584 | if (next_rel + 1 == relend | |
7585 | || (next_rel + 2 < relend | |
7586 | && ELF64_R_TYPE (next_rel[2].r_info) == R_PPC64_TOC)) | |
7587 | ++next_rel; | |
7588 | ||
7589 | /* See if the .opd entry is full 24 byte or | |
7590 | 16 byte (with fd_aux entry overlapped with next | |
7591 | fd_func). */ | |
7592 | opd_ent_size = 24; | |
7593 | if (next_rel == relend) | |
1e2f5b6e | 7594 | { |
51aecdc5 | 7595 | if (sec->size == rel->r_offset + 16) |
3f764659 | 7596 | opd_ent_size = 16; |
51aecdc5 AM |
7597 | } |
7598 | else if (next_rel->r_offset == rel->r_offset + 16) | |
7599 | opd_ent_size = 16; | |
3f764659 | 7600 | |
51aecdc5 AM |
7601 | if (h != NULL |
7602 | && h->root.root.string[0] == '.') | |
7603 | { | |
ed7007c1 | 7604 | fdh = ppc_elf_hash_entry (h)->oh; |
8c5b4e52 AM |
7605 | if (fdh != NULL) |
7606 | { | |
7607 | fdh = ppc_follow_link (fdh); | |
7608 | if (fdh->elf.root.type != bfd_link_hash_defined | |
7609 | && fdh->elf.root.type != bfd_link_hash_defweak) | |
7610 | fdh = NULL; | |
7611 | } | |
51aecdc5 | 7612 | } |
1e2f5b6e | 7613 | |
51aecdc5 AM |
7614 | skip = (sym_sec->owner != ibfd |
7615 | || sym_sec->output_section == bfd_abs_section_ptr); | |
7616 | if (skip) | |
7617 | { | |
7618 | if (fdh != NULL && sym_sec->owner == ibfd) | |
a4aa0fb7 | 7619 | { |
51aecdc5 AM |
7620 | /* Arrange for the function descriptor sym |
7621 | to be dropped. */ | |
7622 | fdh->elf.root.u.def.value = 0; | |
7623 | fdh->elf.root.u.def.section = sym_sec; | |
a4aa0fb7 | 7624 | } |
51aecdc5 | 7625 | opd->adjust[OPD_NDX (rel->r_offset)] = -1; |
1e2f5b6e | 7626 | |
0e1862bb | 7627 | if (NO_OPD_RELOCS || bfd_link_relocatable (info)) |
51aecdc5 AM |
7628 | rel = next_rel; |
7629 | else | |
7630 | while (1) | |
7631 | { | |
1657026c | 7632 | if (!dec_dynrel_count (rel, sec, info, |
51aecdc5 AM |
7633 | NULL, h, sym)) |
7634 | goto error_ret; | |
754021d0 | 7635 | |
51aecdc5 AM |
7636 | if (++rel == next_rel) |
7637 | break; | |
1e2f5b6e | 7638 | |
51aecdc5 AM |
7639 | r_symndx = ELF64_R_SYM (rel->r_info); |
7640 | if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, | |
7641 | r_symndx, ibfd)) | |
7642 | goto error_ret; | |
7643 | } | |
50bc7936 AM |
7644 | } |
7645 | else | |
1e2f5b6e | 7646 | { |
51aecdc5 AM |
7647 | /* We'll be keeping this opd entry. */ |
7648 | long adjust; | |
7649 | ||
7650 | if (fdh != NULL) | |
7651 | { | |
7652 | /* Redefine the function descriptor symbol to | |
7653 | this location in the opd section. It is | |
7654 | necessary to update the value here rather | |
7655 | than using an array of adjustments as we do | |
7656 | for local symbols, because various places | |
7657 | in the generic ELF code use the value | |
7658 | stored in u.def.value. */ | |
7659 | fdh->elf.root.u.def.value = wptr - new_contents; | |
7660 | fdh->adjust_done = 1; | |
7661 | } | |
7662 | ||
7663 | /* Local syms are a bit tricky. We could | |
7664 | tweak them as they can be cached, but | |
7665 | we'd need to look through the local syms | |
7666 | for the function descriptor sym which we | |
7667 | don't have at the moment. So keep an | |
7668 | array of adjustments. */ | |
7669 | adjust = (wptr - new_contents) - (rptr - sec->contents); | |
7670 | opd->adjust[OPD_NDX (rel->r_offset)] = adjust; | |
7671 | ||
7672 | if (wptr != rptr) | |
7673 | memcpy (wptr, rptr, opd_ent_size); | |
7674 | wptr += opd_ent_size; | |
7675 | if (add_aux_fields && opd_ent_size == 16) | |
7676 | { | |
7677 | memset (wptr, '\0', 8); | |
7678 | wptr += 8; | |
7679 | } | |
7680 | ||
50bc7936 | 7681 | /* We need to adjust any reloc offsets to point to the |
51aecdc5 AM |
7682 | new opd entries. */ |
7683 | for ( ; rel != next_rel; ++rel) | |
7684 | { | |
7685 | rel->r_offset += adjust; | |
7686 | if (write_rel != rel) | |
7687 | memcpy (write_rel, rel, sizeof (*rel)); | |
7688 | ++write_rel; | |
7689 | } | |
1e2f5b6e | 7690 | } |
51aecdc5 AM |
7691 | |
7692 | rptr += opd_ent_size; | |
1e2f5b6e AM |
7693 | } |
7694 | ||
3f764659 | 7695 | sec->size = wptr - new_contents; |
1e2f5b6e | 7696 | sec->reloc_count = write_rel - relstart; |
3f764659 JJ |
7697 | if (add_aux_fields) |
7698 | { | |
7699 | free (sec->contents); | |
7700 | sec->contents = new_contents; | |
7701 | } | |
7702 | ||
05bf9422 | 7703 | /* Fudge the header size too, as this is used later in |
cdcf6e38 | 7704 | elf_bfd_final_link if we are emitting relocs. */ |
d4730f92 BS |
7705 | rel_hdr = _bfd_elf_single_rel_hdr (sec); |
7706 | rel_hdr->sh_size = sec->reloc_count * rel_hdr->sh_entsize; | |
0a1b45a2 | 7707 | some_edited = true; |
1e2f5b6e | 7708 | } |
6cdc0ccc | 7709 | else if (elf_section_data (sec)->relocs != relstart) |
1e2f5b6e | 7710 | free (relstart); |
6cdc0ccc | 7711 | |
411e1bfb AM |
7712 | if (local_syms != NULL |
7713 | && symtab_hdr->contents != (unsigned char *) local_syms) | |
7714 | { | |
7715 | if (!info->keep_memory) | |
7716 | free (local_syms); | |
7717 | else | |
7718 | symtab_hdr->contents = (unsigned char *) local_syms; | |
7719 | } | |
7720 | } | |
7721 | ||
754021d0 AM |
7722 | if (some_edited) |
7723 | elf_link_hash_traverse (elf_hash_table (info), adjust_opd_syms, NULL); | |
7724 | ||
3f764659 JJ |
7725 | /* If we are doing a final link and the last .opd entry is just 16 byte |
7726 | long, add a 8 byte padding after it. */ | |
0e1862bb | 7727 | if (need_pad != NULL && !bfd_link_relocatable (info)) |
3f764659 JJ |
7728 | { |
7729 | bfd_byte *p; | |
7730 | ||
7731 | if ((need_pad->flags & SEC_IN_MEMORY) == 0) | |
7732 | { | |
7733 | BFD_ASSERT (need_pad->size > 0); | |
7734 | ||
7735 | p = bfd_malloc (need_pad->size + 8); | |
7736 | if (p == NULL) | |
0a1b45a2 | 7737 | return false; |
699733f6 | 7738 | |
2cdcc330 AM |
7739 | if (!bfd_get_section_contents (need_pad->owner, need_pad, |
7740 | p, 0, need_pad->size)) | |
0a1b45a2 | 7741 | return false; |
3f764659 JJ |
7742 | |
7743 | need_pad->contents = p; | |
7744 | need_pad->flags |= (SEC_IN_MEMORY | SEC_HAS_CONTENTS); | |
7745 | } | |
7746 | else | |
7747 | { | |
7748 | p = bfd_realloc (need_pad->contents, need_pad->size + 8); | |
7749 | if (p == NULL) | |
0a1b45a2 | 7750 | return false; |
3f764659 JJ |
7751 | |
7752 | need_pad->contents = p; | |
7753 | } | |
7754 | ||
7755 | memset (need_pad->contents + need_pad->size, 0, 8); | |
7756 | need_pad->size += 8; | |
7757 | } | |
7758 | ||
0a1b45a2 | 7759 | return true; |
411e1bfb AM |
7760 | } |
7761 | ||
3e04d765 AM |
7762 | /* Analyze inline PLT call relocations to see whether calls to locally |
7763 | defined functions can be converted to direct calls. */ | |
7764 | ||
0a1b45a2 | 7765 | bool |
3e04d765 AM |
7766 | ppc64_elf_inline_plt (struct bfd_link_info *info) |
7767 | { | |
7768 | struct ppc_link_hash_table *htab; | |
7769 | bfd *ibfd; | |
7770 | asection *sec; | |
7771 | bfd_vma low_vma, high_vma, limit; | |
7772 | ||
7773 | htab = ppc_hash_table (info); | |
7774 | if (htab == NULL) | |
0a1b45a2 | 7775 | return false; |
3e04d765 AM |
7776 | |
7777 | /* A bl insn can reach -0x2000000 to 0x1fffffc. The limit is | |
7778 | reduced somewhat to cater for possible stubs that might be added | |
7779 | between the call and its destination. */ | |
7780 | if (htab->params->group_size < 0) | |
7781 | { | |
7782 | limit = -htab->params->group_size; | |
7783 | if (limit == 1) | |
7784 | limit = 0x1e00000; | |
7785 | } | |
7786 | else | |
7787 | { | |
7788 | limit = htab->params->group_size; | |
7789 | if (limit == 1) | |
7790 | limit = 0x1c00000; | |
7791 | } | |
7792 | ||
7793 | low_vma = -1; | |
7794 | high_vma = 0; | |
7795 | for (sec = info->output_bfd->sections; sec != NULL; sec = sec->next) | |
7796 | if ((sec->flags & (SEC_ALLOC | SEC_CODE)) == (SEC_ALLOC | SEC_CODE)) | |
7797 | { | |
7798 | if (low_vma > sec->vma) | |
7799 | low_vma = sec->vma; | |
7800 | if (high_vma < sec->vma + sec->size) | |
7801 | high_vma = sec->vma + sec->size; | |
7802 | } | |
7803 | ||
7804 | /* If a "bl" can reach anywhere in local code sections, then we can | |
7805 | convert all inline PLT sequences to direct calls when the symbol | |
7806 | is local. */ | |
7807 | if (high_vma - low_vma < limit) | |
7808 | { | |
7809 | htab->can_convert_all_inline_plt = 1; | |
0a1b45a2 | 7810 | return true; |
3e04d765 AM |
7811 | } |
7812 | ||
7813 | /* Otherwise, go looking through relocs for cases where a direct | |
7814 | call won't reach. Mark the symbol on any such reloc to disable | |
7815 | the optimization and keep the PLT entry as it seems likely that | |
7816 | this will be better than creating trampolines. Note that this | |
7817 | will disable the optimization for all inline PLT calls to a | |
7818 | particular symbol, not just those that won't reach. The | |
7819 | difficulty in doing a more precise optimization is that the | |
7820 | linker needs to make a decision depending on whether a | |
7821 | particular R_PPC64_PLTCALL insn can be turned into a direct | |
7822 | call, for each of the R_PPC64_PLTSEQ and R_PPC64_PLT16* insns in | |
7823 | the sequence, and there is nothing that ties those relocs | |
7824 | together except their symbol. */ | |
7825 | ||
7826 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next) | |
7827 | { | |
7828 | Elf_Internal_Shdr *symtab_hdr; | |
7829 | Elf_Internal_Sym *local_syms; | |
7830 | ||
7831 | if (!is_ppc64_elf (ibfd)) | |
7832 | continue; | |
7833 | ||
7834 | local_syms = NULL; | |
7835 | symtab_hdr = &elf_symtab_hdr (ibfd); | |
7836 | ||
7837 | for (sec = ibfd->sections; sec != NULL; sec = sec->next) | |
7838 | if (ppc64_elf_section_data (sec)->has_pltcall | |
7839 | && !bfd_is_abs_section (sec->output_section)) | |
7840 | { | |
7841 | Elf_Internal_Rela *relstart, *rel, *relend; | |
7842 | ||
7843 | /* Read the relocations. */ | |
7844 | relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL, | |
7845 | info->keep_memory); | |
7846 | if (relstart == NULL) | |
0a1b45a2 | 7847 | return false; |
3e04d765 AM |
7848 | |
7849 | relend = relstart + sec->reloc_count; | |
435edf0b | 7850 | for (rel = relstart; rel < relend; rel++) |
3e04d765 AM |
7851 | { |
7852 | enum elf_ppc64_reloc_type r_type; | |
7853 | unsigned long r_symndx; | |
7854 | asection *sym_sec; | |
7855 | struct elf_link_hash_entry *h; | |
7856 | Elf_Internal_Sym *sym; | |
7857 | unsigned char *tls_maskp; | |
7858 | ||
7859 | r_type = ELF64_R_TYPE (rel->r_info); | |
5663e321 AM |
7860 | if (r_type != R_PPC64_PLTCALL |
7861 | && r_type != R_PPC64_PLTCALL_NOTOC) | |
3e04d765 AM |
7862 | continue; |
7863 | ||
7864 | r_symndx = ELF64_R_SYM (rel->r_info); | |
7865 | if (!get_sym_h (&h, &sym, &sym_sec, &tls_maskp, &local_syms, | |
7866 | r_symndx, ibfd)) | |
7867 | { | |
7868 | if (elf_section_data (sec)->relocs != relstart) | |
7869 | free (relstart); | |
c9594989 | 7870 | if (symtab_hdr->contents != (bfd_byte *) local_syms) |
3e04d765 | 7871 | free (local_syms); |
0a1b45a2 | 7872 | return false; |
3e04d765 AM |
7873 | } |
7874 | ||
7875 | if (sym_sec != NULL && sym_sec->output_section != NULL) | |
7876 | { | |
7877 | bfd_vma from, to; | |
7878 | if (h != NULL) | |
7879 | to = h->root.u.def.value; | |
7880 | else | |
7881 | to = sym->st_value; | |
7882 | to += (rel->r_addend | |
7883 | + sym_sec->output_offset | |
7884 | + sym_sec->output_section->vma); | |
7885 | from = (rel->r_offset | |
7886 | + sec->output_offset | |
7887 | + sec->output_section->vma); | |
5663e321 AM |
7888 | if (to - from + limit < 2 * limit |
7889 | && !(r_type == R_PPC64_PLTCALL_NOTOC | |
7890 | && (((h ? h->other : sym->st_other) | |
7891 | & STO_PPC64_LOCAL_MASK) | |
4a4e7361 | 7892 | > 1 << STO_PPC64_LOCAL_BIT))) |
3e04d765 AM |
7893 | *tls_maskp &= ~PLT_KEEP; |
7894 | } | |
7895 | } | |
7896 | if (elf_section_data (sec)->relocs != relstart) | |
7897 | free (relstart); | |
7898 | } | |
7899 | ||
7900 | if (local_syms != NULL | |
7901 | && symtab_hdr->contents != (unsigned char *) local_syms) | |
7902 | { | |
7903 | if (!info->keep_memory) | |
7904 | free (local_syms); | |
7905 | else | |
7906 | symtab_hdr->contents = (unsigned char *) local_syms; | |
7907 | } | |
7908 | } | |
7909 | ||
0a1b45a2 | 7910 | return true; |
3e04d765 AM |
7911 | } |
7912 | ||
c9405344 AM |
7913 | /* Set htab->tls_get_addr and various other info specific to TLS. |
7914 | This needs to run before dynamic symbols are processed in | |
7915 | bfd_elf_size_dynamic_sections. */ | |
411e1bfb | 7916 | |
0a1b45a2 | 7917 | bool |
e7d1c40c | 7918 | ppc64_elf_tls_setup (struct bfd_link_info *info) |
411e1bfb | 7919 | { |
411e1bfb | 7920 | struct ppc_link_hash_table *htab; |
9e7028aa | 7921 | struct elf_link_hash_entry *tga, *tga_fd, *desc, *desc_fd; |
411e1bfb | 7922 | |
411e1bfb | 7923 | htab = ppc_hash_table (info); |
4dfe6ac6 | 7924 | if (htab == NULL) |
0a1b45a2 | 7925 | return false; |
4dfe6ac6 | 7926 | |
a442059f AM |
7927 | /* Move dynamic linking info to the function descriptor sym. */ |
7928 | if (htab->need_func_desc_adj) | |
7929 | { | |
7930 | elf_link_hash_traverse (&htab->elf, func_desc_adjust, info); | |
7931 | htab->need_func_desc_adj = 0; | |
7932 | } | |
7933 | ||
ee67d69a AM |
7934 | if (abiversion (info->output_bfd) == 1) |
7935 | htab->opd_abi = 1; | |
7936 | ||
e7d1c40c | 7937 | if (htab->params->no_multi_toc) |
33c0ec9d AM |
7938 | htab->do_multi_toc = 0; |
7939 | else if (!htab->do_multi_toc) | |
e7d1c40c | 7940 | htab->params->no_multi_toc = 1; |
33c0ec9d | 7941 | |
8b5f1ed8 AM |
7942 | /* Default to --no-plt-localentry, as this option can cause problems |
7943 | with symbol interposition. For example, glibc libpthread.so and | |
7944 | libc.so duplicate many pthread symbols, with a fallback | |
7945 | implementation in libc.so. In some cases the fallback does more | |
7946 | work than the pthread implementation. __pthread_condattr_destroy | |
7947 | is one such symbol: the libpthread.so implementation is | |
7948 | localentry:0 while the libc.so implementation is localentry:8. | |
7949 | An app that "cleverly" uses dlopen to only load necessary | |
7950 | libraries at runtime may omit loading libpthread.so when not | |
7951 | running multi-threaded, which then results in the libc.so | |
7952 | fallback symbols being used and ld.so complaining. Now there | |
7953 | are workarounds in ld (see non_zero_localentry) to detect the | |
7954 | pthread situation, but that may not be the only case where | |
7955 | --plt-localentry can cause trouble. */ | |
f378ab09 | 7956 | if (htab->params->plt_localentry0 < 0) |
8b5f1ed8 | 7957 | htab->params->plt_localentry0 = 0; |
3cd7c7d7 AM |
7958 | if (htab->params->plt_localentry0 && htab->has_power10_relocs) |
7959 | { | |
7960 | /* The issue is that __glink_PLTresolve saves r2, which is done | |
7961 | because glibc ld.so _dl_runtime_resolve restores r2 to support | |
7962 | a glibc plt call optimisation where global entry code is | |
7963 | skipped on calls that resolve to the same binary. The | |
7964 | __glink_PLTresolve save of r2 is incompatible with code | |
7965 | making tail calls, because the tail call might go via the | |
7966 | resolver and thus overwrite the proper saved r2. */ | |
7967 | _bfd_error_handler (_("warning: --plt-localentry is incompatible with " | |
7968 | "power10 pc-relative code")); | |
7969 | htab->params->plt_localentry0 = 0; | |
7970 | } | |
d44c746a AM |
7971 | if (htab->params->plt_localentry0 |
7972 | && elf_link_hash_lookup (&htab->elf, "GLIBC_2.26", | |
0a1b45a2 | 7973 | false, false, false) == NULL) |
cf97bcb0 AM |
7974 | _bfd_error_handler |
7975 | (_("warning: --plt-localentry is especially dangerous without " | |
7976 | "ld.so support to detect ABI violations")); | |
f378ab09 | 7977 | |
9e7028aa | 7978 | tga = elf_link_hash_lookup (&htab->elf, ".__tls_get_addr", |
0a1b45a2 | 7979 | false, false, true); |
9e7028aa | 7980 | htab->tls_get_addr = ppc_elf_hash_entry (tga); |
9e7028aa | 7981 | tga_fd = elf_link_hash_lookup (&htab->elf, "__tls_get_addr", |
0a1b45a2 | 7982 | false, false, true); |
9e7028aa AM |
7983 | htab->tls_get_addr_fd = ppc_elf_hash_entry (tga_fd); |
7984 | ||
7985 | desc = elf_link_hash_lookup (&htab->elf, ".__tls_get_addr_desc", | |
0a1b45a2 | 7986 | false, false, true); |
9e7028aa | 7987 | htab->tga_desc = ppc_elf_hash_entry (desc); |
9e7028aa | 7988 | desc_fd = elf_link_hash_lookup (&htab->elf, "__tls_get_addr_desc", |
0a1b45a2 | 7989 | false, false, true); |
9e7028aa AM |
7990 | htab->tga_desc_fd = ppc_elf_hash_entry (desc_fd); |
7991 | ||
7c9cf415 | 7992 | if (htab->params->tls_get_addr_opt) |
a7f2871e | 7993 | { |
9e7028aa | 7994 | struct elf_link_hash_entry *opt, *opt_fd; |
a7f2871e AM |
7995 | |
7996 | opt = elf_link_hash_lookup (&htab->elf, ".__tls_get_addr_opt", | |
0a1b45a2 | 7997 | false, false, true); |
a7f2871e | 7998 | opt_fd = elf_link_hash_lookup (&htab->elf, "__tls_get_addr_opt", |
0a1b45a2 | 7999 | false, false, true); |
a7f2871e AM |
8000 | if (opt_fd != NULL |
8001 | && (opt_fd->root.type == bfd_link_hash_defined | |
8002 | || opt_fd->root.type == bfd_link_hash_defweak)) | |
8003 | { | |
8004 | /* If glibc supports an optimized __tls_get_addr call stub, | |
8005 | signalled by the presence of __tls_get_addr_opt, and we'll | |
8006 | be calling __tls_get_addr via a plt call stub, then | |
8007 | make __tls_get_addr point to __tls_get_addr_opt. */ | |
9e7028aa AM |
8008 | if (!(htab->elf.dynamic_sections_created |
8009 | && tga_fd != NULL | |
8010 | && (tga_fd->type == STT_FUNC | |
8011 | || tga_fd->needs_plt) | |
8012 | && !(SYMBOL_CALLS_LOCAL (info, tga_fd) | |
8013 | || UNDEFWEAK_NO_DYNAMIC_RELOC (info, tga_fd)))) | |
8014 | tga_fd = NULL; | |
8015 | if (!(htab->elf.dynamic_sections_created | |
8016 | && desc_fd != NULL | |
8017 | && (desc_fd->type == STT_FUNC | |
8018 | || desc_fd->needs_plt) | |
8019 | && !(SYMBOL_CALLS_LOCAL (info, desc_fd) | |
8020 | || UNDEFWEAK_NO_DYNAMIC_RELOC (info, desc_fd)))) | |
8021 | desc_fd = NULL; | |
8022 | ||
8023 | if (tga_fd != NULL || desc_fd != NULL) | |
8024 | { | |
8025 | struct plt_entry *ent = NULL; | |
8026 | ||
8027 | if (tga_fd != NULL) | |
8028 | for (ent = tga_fd->plt.plist; ent != NULL; ent = ent->next) | |
8029 | if (ent->plt.refcount > 0) | |
8030 | break; | |
8031 | if (ent == NULL && desc_fd != NULL) | |
8032 | for (ent = desc_fd->plt.plist; ent != NULL; ent = ent->next) | |
8033 | if (ent->plt.refcount > 0) | |
8034 | break; | |
a7f2871e AM |
8035 | if (ent != NULL) |
8036 | { | |
9e7028aa AM |
8037 | if (tga_fd != NULL) |
8038 | { | |
8039 | tga_fd->root.type = bfd_link_hash_indirect; | |
8040 | tga_fd->root.u.i.link = &opt_fd->root; | |
8041 | tga_fd->root.u.i.warning = NULL; | |
8042 | ppc64_elf_copy_indirect_symbol (info, opt_fd, tga_fd); | |
8043 | } | |
8044 | if (desc_fd != NULL) | |
8045 | { | |
8046 | desc_fd->root.type = bfd_link_hash_indirect; | |
8047 | desc_fd->root.u.i.link = &opt_fd->root; | |
8048 | desc_fd->root.u.i.warning = NULL; | |
8049 | ppc64_elf_copy_indirect_symbol (info, opt_fd, desc_fd); | |
8050 | } | |
b531344c | 8051 | opt_fd->mark = 1; |
a7f2871e AM |
8052 | if (opt_fd->dynindx != -1) |
8053 | { | |
8054 | /* Use __tls_get_addr_opt in dynamic relocations. */ | |
8055 | opt_fd->dynindx = -1; | |
8056 | _bfd_elf_strtab_delref (elf_hash_table (info)->dynstr, | |
8057 | opt_fd->dynstr_index); | |
8058 | if (!bfd_elf_link_record_dynamic_symbol (info, opt_fd)) | |
0a1b45a2 | 8059 | return false; |
a7f2871e | 8060 | } |
9e7028aa | 8061 | if (tga_fd != NULL) |
a7f2871e | 8062 | { |
9e7028aa | 8063 | htab->tls_get_addr_fd = ppc_elf_hash_entry (opt_fd); |
30845f11 | 8064 | tga = elf_hash_entry (htab->tls_get_addr); |
9e7028aa AM |
8065 | if (opt != NULL && tga != NULL) |
8066 | { | |
8067 | tga->root.type = bfd_link_hash_indirect; | |
8068 | tga->root.u.i.link = &opt->root; | |
8069 | tga->root.u.i.warning = NULL; | |
8070 | ppc64_elf_copy_indirect_symbol (info, opt, tga); | |
8071 | opt->mark = 1; | |
8072 | _bfd_elf_link_hash_hide_symbol (info, opt, | |
8073 | tga->forced_local); | |
8074 | htab->tls_get_addr = ppc_elf_hash_entry (opt); | |
8075 | } | |
8076 | htab->tls_get_addr_fd->oh = htab->tls_get_addr; | |
8077 | htab->tls_get_addr_fd->is_func_descriptor = 1; | |
8078 | if (htab->tls_get_addr != NULL) | |
8079 | { | |
8080 | htab->tls_get_addr->oh = htab->tls_get_addr_fd; | |
8081 | htab->tls_get_addr->is_func = 1; | |
8082 | } | |
a7f2871e | 8083 | } |
9e7028aa | 8084 | if (desc_fd != NULL) |
a7f2871e | 8085 | { |
9e7028aa AM |
8086 | htab->tga_desc_fd = ppc_elf_hash_entry (opt_fd); |
8087 | if (opt != NULL && desc != NULL) | |
8088 | { | |
8089 | desc->root.type = bfd_link_hash_indirect; | |
8090 | desc->root.u.i.link = &opt->root; | |
8091 | desc->root.u.i.warning = NULL; | |
8092 | ppc64_elf_copy_indirect_symbol (info, opt, desc); | |
8093 | opt->mark = 1; | |
8094 | _bfd_elf_link_hash_hide_symbol (info, opt, | |
8095 | desc->forced_local); | |
8096 | htab->tga_desc = ppc_elf_hash_entry (opt); | |
8097 | } | |
8098 | htab->tga_desc_fd->oh = htab->tga_desc; | |
8099 | htab->tga_desc_fd->is_func_descriptor = 1; | |
8100 | if (htab->tga_desc != NULL) | |
8101 | { | |
8102 | htab->tga_desc->oh = htab->tga_desc_fd; | |
8103 | htab->tga_desc->is_func = 1; | |
8104 | } | |
a7f2871e AM |
8105 | } |
8106 | } | |
8107 | } | |
8108 | } | |
7c9cf415 AM |
8109 | else if (htab->params->tls_get_addr_opt < 0) |
8110 | htab->params->tls_get_addr_opt = 0; | |
a7f2871e | 8111 | } |
9e7028aa AM |
8112 | |
8113 | if (htab->tga_desc_fd != NULL | |
8114 | && htab->params->tls_get_addr_opt | |
8115 | && htab->params->no_tls_get_addr_regsave == -1) | |
8116 | htab->params->no_tls_get_addr_regsave = 0; | |
8117 | ||
0a1b45a2 | 8118 | return true; |
3a71aa26 | 8119 | } |
8387904d | 8120 | |
3a71aa26 | 8121 | /* Return TRUE iff REL is a branch reloc with a global symbol matching |
9e7028aa | 8122 | any of HASH1, HASH2, HASH3, or HASH4. */ |
8387904d | 8123 | |
0a1b45a2 | 8124 | static bool |
30845f11 AM |
8125 | branch_reloc_hash_match (bfd *ibfd, |
8126 | Elf_Internal_Rela *rel, | |
8127 | struct ppc_link_hash_entry *hash1, | |
8128 | struct ppc_link_hash_entry *hash2, | |
8129 | struct ppc_link_hash_entry *hash3, | |
8130 | struct ppc_link_hash_entry *hash4) | |
3a71aa26 AM |
8131 | { |
8132 | Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (ibfd); | |
8133 | enum elf_ppc64_reloc_type r_type = ELF64_R_TYPE (rel->r_info); | |
8134 | unsigned int r_symndx = ELF64_R_SYM (rel->r_info); | |
8135 | ||
e054468f | 8136 | if (r_symndx >= symtab_hdr->sh_info && is_branch_reloc (r_type)) |
8387904d | 8137 | { |
3a71aa26 AM |
8138 | struct elf_link_hash_entry **sym_hashes = elf_sym_hashes (ibfd); |
8139 | struct elf_link_hash_entry *h; | |
8387904d | 8140 | |
3a71aa26 | 8141 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; |
b31867b6 | 8142 | h = elf_follow_link (h); |
30845f11 AM |
8143 | if (h == elf_hash_entry (hash1) |
8144 | || h == elf_hash_entry (hash2) | |
8145 | || h == elf_hash_entry (hash3) | |
8146 | || h == elf_hash_entry (hash4)) | |
0a1b45a2 | 8147 | return true; |
a48ebf4d | 8148 | } |
0a1b45a2 | 8149 | return false; |
951fd09b | 8150 | } |
411e1bfb | 8151 | |
951fd09b AM |
8152 | /* Run through all the TLS relocs looking for optimization |
8153 | opportunities. The linker has been hacked (see ppc64elf.em) to do | |
8154 | a preliminary section layout so that we know the TLS segment | |
8155 | offsets. We can't optimize earlier because some optimizations need | |
8156 | to know the tp offset, and we need to optimize before allocating | |
8157 | dynamic relocations. */ | |
8158 | ||
0a1b45a2 | 8159 | bool |
33c0ec9d | 8160 | ppc64_elf_tls_optimize (struct bfd_link_info *info) |
951fd09b AM |
8161 | { |
8162 | bfd *ibfd; | |
8163 | asection *sec; | |
8164 | struct ppc_link_hash_table *htab; | |
663a1470 | 8165 | unsigned char *toc_ref; |
102890f0 | 8166 | int pass; |
951fd09b | 8167 | |
3cbc1e5e | 8168 | if (!bfd_link_executable (info)) |
0a1b45a2 | 8169 | return true; |
411e1bfb | 8170 | |
951fd09b | 8171 | htab = ppc_hash_table (info); |
4dfe6ac6 | 8172 | if (htab == NULL) |
0a1b45a2 | 8173 | return false; |
4dfe6ac6 | 8174 | |
252dcdf4 AM |
8175 | htab->do_tls_opt = 1; |
8176 | ||
663a1470 AM |
8177 | /* Make two passes over the relocs. On the first pass, mark toc |
8178 | entries involved with tls relocs, and check that tls relocs | |
8179 | involved in setting up a tls_get_addr call are indeed followed by | |
8180 | such a call. If they are not, we can't do any tls optimization. | |
8181 | On the second pass twiddle tls_mask flags to notify | |
8182 | relocate_section that optimization can be done, and adjust got | |
8183 | and plt refcounts. */ | |
8184 | toc_ref = NULL; | |
8185 | for (pass = 0; pass < 2; ++pass) | |
c72f2fb2 | 8186 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next) |
663a1470 AM |
8187 | { |
8188 | Elf_Internal_Sym *locsyms = NULL; | |
8189 | asection *toc = bfd_get_section_by_name (ibfd, ".toc"); | |
8190 | ||
102890f0 AM |
8191 | for (sec = ibfd->sections; sec != NULL; sec = sec->next) |
8192 | if (sec->has_tls_reloc && !bfd_is_abs_section (sec->output_section)) | |
8193 | { | |
8194 | Elf_Internal_Rela *relstart, *rel, *relend; | |
0a1b45a2 | 8195 | bool found_tls_get_addr_arg = 0; |
411e1bfb | 8196 | |
102890f0 AM |
8197 | /* Read the relocations. */ |
8198 | relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL, | |
8199 | info->keep_memory); | |
8200 | if (relstart == NULL) | |
2915c55b JK |
8201 | { |
8202 | free (toc_ref); | |
0a1b45a2 | 8203 | return false; |
2915c55b | 8204 | } |
411e1bfb | 8205 | |
102890f0 AM |
8206 | relend = relstart + sec->reloc_count; |
8207 | for (rel = relstart; rel < relend; rel++) | |
8208 | { | |
8209 | enum elf_ppc64_reloc_type r_type; | |
8210 | unsigned long r_symndx; | |
8211 | struct elf_link_hash_entry *h; | |
8212 | Elf_Internal_Sym *sym; | |
8213 | asection *sym_sec; | |
f961d9dd | 8214 | unsigned char *tls_mask; |
46e9995a | 8215 | unsigned int tls_set, tls_clear, tls_type = 0; |
102890f0 | 8216 | bfd_vma value; |
0a1b45a2 | 8217 | bool ok_tprel, is_local; |
102890f0 AM |
8218 | long toc_ref_index = 0; |
8219 | int expecting_tls_get_addr = 0; | |
0a1b45a2 | 8220 | bool ret = false; |
411e1bfb | 8221 | |
102890f0 AM |
8222 | r_symndx = ELF64_R_SYM (rel->r_info); |
8223 | if (!get_sym_h (&h, &sym, &sym_sec, &tls_mask, &locsyms, | |
8224 | r_symndx, ibfd)) | |
8225 | { | |
8226 | err_free_rel: | |
8227 | if (elf_section_data (sec)->relocs != relstart) | |
8228 | free (relstart); | |
c9594989 AM |
8229 | free (toc_ref); |
8230 | if (elf_symtab_hdr (ibfd).contents | |
8231 | != (unsigned char *) locsyms) | |
102890f0 | 8232 | free (locsyms); |
663a1470 | 8233 | return ret; |
102890f0 | 8234 | } |
411e1bfb | 8235 | |
102890f0 AM |
8236 | if (h != NULL) |
8237 | { | |
766bc656 AM |
8238 | if (h->root.type == bfd_link_hash_defined |
8239 | || h->root.type == bfd_link_hash_defweak) | |
8240 | value = h->root.u.def.value; | |
8241 | else if (h->root.type == bfd_link_hash_undefweak) | |
8242 | value = 0; | |
8243 | else | |
663a1470 AM |
8244 | { |
8245 | found_tls_get_addr_arg = 0; | |
8246 | continue; | |
8247 | } | |
102890f0 AM |
8248 | } |
8249 | else | |
8250 | /* Symbols referenced by TLS relocs must be of type | |
8251 | STT_TLS. So no need for .opd local sym adjust. */ | |
8252 | value = sym->st_value; | |
8253 | ||
0a1b45a2 | 8254 | ok_tprel = false; |
f749f26e AM |
8255 | is_local = SYMBOL_REFERENCES_LOCAL (info, h); |
8256 | if (is_local) | |
102890f0 | 8257 | { |
766bc656 AM |
8258 | if (h != NULL |
8259 | && h->root.type == bfd_link_hash_undefweak) | |
0a1b45a2 | 8260 | ok_tprel = true; |
c27b8c2a AM |
8261 | else if (sym_sec != NULL |
8262 | && sym_sec->output_section != NULL) | |
766bc656 AM |
8263 | { |
8264 | value += sym_sec->output_offset; | |
8265 | value += sym_sec->output_section->vma; | |
0b147428 | 8266 | value -= htab->elf.tls_sec->vma + TP_OFFSET; |
c213164a AM |
8267 | /* Note that even though the prefix insns |
8268 | allow a 1<<33 offset we use the same test | |
8269 | as for addis;addi. There may be a mix of | |
8270 | pcrel and non-pcrel code and the decision | |
8271 | to optimise is per symbol, not per TLS | |
8272 | sequence. */ | |
0b147428 | 8273 | ok_tprel = value + 0x80008000ULL < 1ULL << 32; |
766bc656 | 8274 | } |
102890f0 | 8275 | } |
951fd09b | 8276 | |
102890f0 | 8277 | r_type = ELF64_R_TYPE (rel->r_info); |
663a1470 AM |
8278 | /* If this section has old-style __tls_get_addr calls |
8279 | without marker relocs, then check that each | |
8280 | __tls_get_addr call reloc is preceded by a reloc | |
8281 | that conceivably belongs to the __tls_get_addr arg | |
8282 | setup insn. If we don't find matching arg setup | |
8283 | relocs, don't do any tls optimization. */ | |
8284 | if (pass == 0 | |
9737e8af | 8285 | && sec->nomark_tls_get_addr |
663a1470 | 8286 | && h != NULL |
ed7007c1 | 8287 | && is_tls_get_addr (h, htab) |
663a1470 AM |
8288 | && !found_tls_get_addr_arg |
8289 | && is_branch_reloc (r_type)) | |
8290 | { | |
25f53a85 | 8291 | info->callbacks->minfo (_("%H __tls_get_addr lost arg, " |
663a1470 AM |
8292 | "TLS optimization disabled\n"), |
8293 | ibfd, sec, rel->r_offset); | |
0a1b45a2 | 8294 | ret = true; |
663a1470 AM |
8295 | goto err_free_rel; |
8296 | } | |
8297 | ||
8298 | found_tls_get_addr_arg = 0; | |
102890f0 AM |
8299 | switch (r_type) |
8300 | { | |
8301 | case R_PPC64_GOT_TLSLD16: | |
8302 | case R_PPC64_GOT_TLSLD16_LO: | |
87c69f97 | 8303 | case R_PPC64_GOT_TLSLD_PCREL34: |
102890f0 | 8304 | expecting_tls_get_addr = 1; |
663a1470 | 8305 | found_tls_get_addr_arg = 1; |
1a0670f3 | 8306 | /* Fall through. */ |
102890f0 AM |
8307 | |
8308 | case R_PPC64_GOT_TLSLD16_HI: | |
8309 | case R_PPC64_GOT_TLSLD16_HA: | |
8310 | /* These relocs should never be against a symbol | |
8311 | defined in a shared lib. Leave them alone if | |
8312 | that turns out to be the case. */ | |
8313 | if (!is_local) | |
8314 | continue; | |
411e1bfb | 8315 | |
102890f0 | 8316 | /* LD -> LE */ |
411e1bfb | 8317 | tls_set = 0; |
102890f0 AM |
8318 | tls_clear = TLS_LD; |
8319 | tls_type = TLS_TLS | TLS_LD; | |
8320 | break; | |
411e1bfb | 8321 | |
102890f0 AM |
8322 | case R_PPC64_GOT_TLSGD16: |
8323 | case R_PPC64_GOT_TLSGD16_LO: | |
87c69f97 | 8324 | case R_PPC64_GOT_TLSGD_PCREL34: |
102890f0 | 8325 | expecting_tls_get_addr = 1; |
663a1470 | 8326 | found_tls_get_addr_arg = 1; |
1a0670f3 | 8327 | /* Fall through. */ |
102890f0 AM |
8328 | |
8329 | case R_PPC64_GOT_TLSGD16_HI: | |
8330 | case R_PPC64_GOT_TLSGD16_HA: | |
8331 | if (ok_tprel) | |
8332 | /* GD -> LE */ | |
411e1bfb | 8333 | tls_set = 0; |
102890f0 AM |
8334 | else |
8335 | /* GD -> IE */ | |
b00a0a86 | 8336 | tls_set = TLS_TLS | TLS_GDIE; |
102890f0 AM |
8337 | tls_clear = TLS_GD; |
8338 | tls_type = TLS_TLS | TLS_GD; | |
8339 | break; | |
8340 | ||
87c69f97 | 8341 | case R_PPC64_GOT_TPREL_PCREL34: |
102890f0 AM |
8342 | case R_PPC64_GOT_TPREL16_DS: |
8343 | case R_PPC64_GOT_TPREL16_LO_DS: | |
8344 | case R_PPC64_GOT_TPREL16_HI: | |
8345 | case R_PPC64_GOT_TPREL16_HA: | |
8346 | if (ok_tprel) | |
8347 | { | |
8348 | /* IE -> LE */ | |
8349 | tls_set = 0; | |
8350 | tls_clear = TLS_TPREL; | |
8351 | tls_type = TLS_TLS | TLS_TPREL; | |
8352 | break; | |
8353 | } | |
411e1bfb AM |
8354 | continue; |
8355 | ||
727fc41e | 8356 | case R_PPC64_TLSLD: |
7d04a20a AM |
8357 | if (!is_local) |
8358 | continue; | |
8359 | /* Fall through. */ | |
8360 | case R_PPC64_TLSGD: | |
23cedd1d AM |
8361 | if (rel + 1 < relend |
8362 | && is_plt_seq_reloc (ELF64_R_TYPE (rel[1].r_info))) | |
8363 | { | |
8364 | if (pass != 0 | |
2cdcc330 | 8365 | && (ELF64_R_TYPE (rel[1].r_info) |
5663e321 AM |
8366 | != R_PPC64_PLTSEQ) |
8367 | && (ELF64_R_TYPE (rel[1].r_info) | |
8368 | != R_PPC64_PLTSEQ_NOTOC)) | |
23cedd1d AM |
8369 | { |
8370 | r_symndx = ELF64_R_SYM (rel[1].r_info); | |
8371 | if (!get_sym_h (&h, NULL, NULL, NULL, &locsyms, | |
2cdcc330 | 8372 | r_symndx, ibfd)) |
23cedd1d AM |
8373 | goto err_free_rel; |
8374 | if (h != NULL) | |
8375 | { | |
8376 | struct plt_entry *ent = NULL; | |
8377 | ||
8378 | for (ent = h->plt.plist; | |
8379 | ent != NULL; | |
8380 | ent = ent->next) | |
8381 | if (ent->addend == rel[1].r_addend) | |
8382 | break; | |
8383 | ||
8384 | if (ent != NULL | |
8385 | && ent->plt.refcount > 0) | |
8386 | ent->plt.refcount -= 1; | |
8387 | } | |
8388 | } | |
8389 | continue; | |
8390 | } | |
663a1470 | 8391 | found_tls_get_addr_arg = 1; |
1a0670f3 | 8392 | /* Fall through. */ |
663a1470 AM |
8393 | |
8394 | case R_PPC64_TLS: | |
8395 | case R_PPC64_TOC16: | |
8396 | case R_PPC64_TOC16_LO: | |
102890f0 AM |
8397 | if (sym_sec == NULL || sym_sec != toc) |
8398 | continue; | |
8399 | ||
8400 | /* Mark this toc entry as referenced by a TLS | |
8401 | code sequence. We can do that now in the | |
8402 | case of R_PPC64_TLS, and after checking for | |
8403 | tls_get_addr for the TOC16 relocs. */ | |
8404 | if (toc_ref == NULL) | |
2cdcc330 AM |
8405 | toc_ref |
8406 | = bfd_zmalloc (toc->output_section->rawsize / 8); | |
663a1470 AM |
8407 | if (toc_ref == NULL) |
8408 | goto err_free_rel; | |
8409 | ||
102890f0 AM |
8410 | if (h != NULL) |
8411 | value = h->root.u.def.value; | |
8412 | else | |
8413 | value = sym->st_value; | |
8414 | value += rel->r_addend; | |
73242275 AM |
8415 | if (value % 8 != 0) |
8416 | continue; | |
8417 | BFD_ASSERT (value < toc->size | |
8418 | && toc->output_offset % 8 == 0); | |
663a1470 | 8419 | toc_ref_index = (value + toc->output_offset) / 8; |
727fc41e AM |
8420 | if (r_type == R_PPC64_TLS |
8421 | || r_type == R_PPC64_TLSGD | |
8422 | || r_type == R_PPC64_TLSLD) | |
102890f0 AM |
8423 | { |
8424 | toc_ref[toc_ref_index] = 1; | |
8425 | continue; | |
8426 | } | |
8427 | ||
8428 | if (pass != 0 && toc_ref[toc_ref_index] == 0) | |
8429 | continue; | |
8430 | ||
8431 | tls_set = 0; | |
8432 | tls_clear = 0; | |
8433 | expecting_tls_get_addr = 2; | |
8434 | break; | |
8435 | ||
8436 | case R_PPC64_TPREL64: | |
8437 | if (pass == 0 | |
8438 | || sec != toc | |
8439 | || toc_ref == NULL | |
663a1470 | 8440 | || !toc_ref[(rel->r_offset + toc->output_offset) / 8]) |
102890f0 AM |
8441 | continue; |
8442 | if (ok_tprel) | |
8443 | { | |
8444 | /* IE -> LE */ | |
8445 | tls_set = TLS_EXPLICIT; | |
8446 | tls_clear = TLS_TPREL; | |
8447 | break; | |
8448 | } | |
8449 | continue; | |
8450 | ||
8451 | case R_PPC64_DTPMOD64: | |
8452 | if (pass == 0 | |
8453 | || sec != toc | |
8454 | || toc_ref == NULL | |
663a1470 | 8455 | || !toc_ref[(rel->r_offset + toc->output_offset) / 8]) |
102890f0 AM |
8456 | continue; |
8457 | if (rel + 1 < relend | |
8458 | && (rel[1].r_info | |
8459 | == ELF64_R_INFO (r_symndx, R_PPC64_DTPREL64)) | |
8460 | && rel[1].r_offset == rel->r_offset + 8) | |
8461 | { | |
8462 | if (ok_tprel) | |
8463 | /* GD -> LE */ | |
8464 | tls_set = TLS_EXPLICIT | TLS_GD; | |
8465 | else | |
8466 | /* GD -> IE */ | |
b00a0a86 | 8467 | tls_set = TLS_EXPLICIT | TLS_GD | TLS_GDIE; |
102890f0 AM |
8468 | tls_clear = TLS_GD; |
8469 | } | |
8470 | else | |
8471 | { | |
8472 | if (!is_local) | |
8473 | continue; | |
8474 | ||
8475 | /* LD -> LE */ | |
8476 | tls_set = TLS_EXPLICIT; | |
8477 | tls_clear = TLS_LD; | |
8478 | } | |
8479 | break; | |
8480 | ||
252dcdf4 AM |
8481 | case R_PPC64_TPREL16_HA: |
8482 | if (pass == 0) | |
8483 | { | |
8484 | unsigned char buf[4]; | |
8485 | unsigned int insn; | |
8486 | bfd_vma off = rel->r_offset & ~3; | |
8487 | if (!bfd_get_section_contents (ibfd, sec, buf, | |
8488 | off, 4)) | |
8489 | goto err_free_rel; | |
8490 | insn = bfd_get_32 (ibfd, buf); | |
8491 | /* addis rt,13,imm */ | |
8492 | if ((insn & ((0x3fu << 26) | 0x1f << 16)) | |
8493 | != ((15u << 26) | (13 << 16))) | |
8494 | { | |
8495 | /* xgettext:c-format */ | |
8496 | info->callbacks->minfo | |
8497 | (_("%H: warning: %s unexpected insn %#x.\n"), | |
8498 | ibfd, sec, off, "R_PPC64_TPREL16_HA", insn); | |
8499 | htab->do_tls_opt = 0; | |
8500 | } | |
8501 | } | |
8502 | continue; | |
8503 | ||
8504 | case R_PPC64_TPREL16_HI: | |
8505 | case R_PPC64_TPREL16_HIGH: | |
8506 | case R_PPC64_TPREL16_HIGHA: | |
8507 | case R_PPC64_TPREL16_HIGHER: | |
8508 | case R_PPC64_TPREL16_HIGHERA: | |
8509 | case R_PPC64_TPREL16_HIGHEST: | |
8510 | case R_PPC64_TPREL16_HIGHESTA: | |
8511 | /* These can all be used in sequences along with | |
8512 | TPREL16_LO or TPREL16_LO_DS in ways we aren't | |
8513 | able to verify easily. */ | |
8514 | htab->do_tls_opt = 0; | |
8515 | continue; | |
8516 | ||
102890f0 AM |
8517 | default: |
8518 | continue; | |
8519 | } | |
8520 | ||
8521 | if (pass == 0) | |
8522 | { | |
727fc41e | 8523 | if (!expecting_tls_get_addr |
9737e8af | 8524 | || !sec->nomark_tls_get_addr) |
102890f0 AM |
8525 | continue; |
8526 | ||
3a71aa26 AM |
8527 | if (rel + 1 < relend |
8528 | && branch_reloc_hash_match (ibfd, rel + 1, | |
9e7028aa AM |
8529 | htab->tls_get_addr_fd, |
8530 | htab->tga_desc_fd, | |
3a71aa26 | 8531 | htab->tls_get_addr, |
9e7028aa | 8532 | htab->tga_desc)) |
102890f0 | 8533 | { |
3a71aa26 | 8534 | if (expecting_tls_get_addr == 2) |
102890f0 | 8535 | { |
3a71aa26 | 8536 | /* Check for toc tls entries. */ |
f961d9dd | 8537 | unsigned char *toc_tls; |
3a71aa26 AM |
8538 | int retval; |
8539 | ||
8540 | retval = get_tls_mask (&toc_tls, NULL, NULL, | |
8541 | &locsyms, | |
8542 | rel, ibfd); | |
8543 | if (retval == 0) | |
8544 | goto err_free_rel; | |
663a1470 AM |
8545 | if (toc_tls != NULL) |
8546 | { | |
37da22e5 AM |
8547 | if ((*toc_tls & TLS_TLS) != 0 |
8548 | && ((*toc_tls & (TLS_GD | TLS_LD)) != 0)) | |
663a1470 AM |
8549 | found_tls_get_addr_arg = 1; |
8550 | if (retval > 1) | |
8551 | toc_ref[toc_ref_index] = 1; | |
8552 | } | |
102890f0 | 8553 | } |
3a71aa26 | 8554 | continue; |
102890f0 AM |
8555 | } |
8556 | ||
102890f0 AM |
8557 | /* Uh oh, we didn't find the expected call. We |
8558 | could just mark this symbol to exclude it | |
8559 | from tls optimization but it's safer to skip | |
663a1470 | 8560 | the entire optimization. */ |
695344c0 | 8561 | /* xgettext:c-format */ |
25f53a85 | 8562 | info->callbacks->minfo (_("%H arg lost __tls_get_addr, " |
663a1470 AM |
8563 | "TLS optimization disabled\n"), |
8564 | ibfd, sec, rel->r_offset); | |
0a1b45a2 | 8565 | ret = true; |
663a1470 | 8566 | goto err_free_rel; |
102890f0 AM |
8567 | } |
8568 | ||
37da22e5 AM |
8569 | /* If we don't have old-style __tls_get_addr calls |
8570 | without TLSGD/TLSLD marker relocs, and we haven't | |
8571 | found a new-style __tls_get_addr call with a | |
8572 | marker for this symbol, then we either have a | |
8573 | broken object file or an -mlongcall style | |
8574 | indirect call to __tls_get_addr without a marker. | |
8575 | Disable optimization in this case. */ | |
8576 | if ((tls_clear & (TLS_GD | TLS_LD)) != 0 | |
8577 | && (tls_set & TLS_EXPLICIT) == 0 | |
9737e8af | 8578 | && !sec->nomark_tls_get_addr |
37da22e5 AM |
8579 | && ((*tls_mask & (TLS_TLS | TLS_MARK)) |
8580 | != (TLS_TLS | TLS_MARK))) | |
8581 | continue; | |
8582 | ||
7d04a20a | 8583 | if (expecting_tls_get_addr == 1 + !sec->nomark_tls_get_addr) |
102890f0 | 8584 | { |
23cedd1d AM |
8585 | struct plt_entry *ent = NULL; |
8586 | ||
9e7028aa AM |
8587 | if (htab->tls_get_addr_fd != NULL) |
8588 | for (ent = htab->tls_get_addr_fd->elf.plt.plist; | |
8589 | ent != NULL; | |
8590 | ent = ent->next) | |
8591 | if (ent->addend == 0) | |
8592 | break; | |
8593 | ||
8594 | if (ent == NULL && htab->tga_desc_fd != NULL) | |
8595 | for (ent = htab->tga_desc_fd->elf.plt.plist; | |
8596 | ent != NULL; | |
8597 | ent = ent->next) | |
8598 | if (ent->addend == 0) | |
8599 | break; | |
8600 | ||
8601 | if (ent == NULL && htab->tls_get_addr != NULL) | |
23cedd1d AM |
8602 | for (ent = htab->tls_get_addr->elf.plt.plist; |
8603 | ent != NULL; | |
8604 | ent = ent->next) | |
8605 | if (ent->addend == 0) | |
102890f0 | 8606 | break; |
411e1bfb | 8607 | |
9e7028aa AM |
8608 | if (ent == NULL && htab->tga_desc != NULL) |
8609 | for (ent = htab->tga_desc->elf.plt.plist; | |
23cedd1d AM |
8610 | ent != NULL; |
8611 | ent = ent->next) | |
8612 | if (ent->addend == 0) | |
102890f0 | 8613 | break; |
23cedd1d AM |
8614 | |
8615 | if (ent != NULL | |
8616 | && ent->plt.refcount > 0) | |
8617 | ent->plt.refcount -= 1; | |
102890f0 | 8618 | } |
411e1bfb | 8619 | |
102890f0 | 8620 | if (tls_clear == 0) |
30038c59 AM |
8621 | continue; |
8622 | ||
102890f0 AM |
8623 | if ((tls_set & TLS_EXPLICIT) == 0) |
8624 | { | |
8625 | struct got_entry *ent; | |
411e1bfb | 8626 | |
102890f0 AM |
8627 | /* Adjust got entry for this reloc. */ |
8628 | if (h != NULL) | |
8629 | ent = h->got.glist; | |
8630 | else | |
8631 | ent = elf_local_got_ents (ibfd)[r_symndx]; | |
411e1bfb | 8632 | |
102890f0 AM |
8633 | for (; ent != NULL; ent = ent->next) |
8634 | if (ent->addend == rel->r_addend | |
8635 | && ent->owner == ibfd | |
8636 | && ent->tls_type == tls_type) | |
8637 | break; | |
8638 | if (ent == NULL) | |
8639 | abort (); | |
411e1bfb | 8640 | |
102890f0 AM |
8641 | if (tls_set == 0) |
8642 | { | |
8643 | /* We managed to get rid of a got entry. */ | |
8644 | if (ent->got.refcount > 0) | |
8645 | ent->got.refcount -= 1; | |
8646 | } | |
8647 | } | |
8648 | else | |
8649 | { | |
8650 | /* If we got rid of a DTPMOD/DTPREL reloc pair then | |
8651 | we'll lose one or two dyn relocs. */ | |
1657026c | 8652 | if (!dec_dynrel_count (rel, sec, info, |
19e08130 | 8653 | NULL, h, sym)) |
0a1b45a2 | 8654 | return false; |
411e1bfb | 8655 | |
102890f0 AM |
8656 | if (tls_set == (TLS_EXPLICIT | TLS_GD)) |
8657 | { | |
1657026c | 8658 | if (!dec_dynrel_count (rel + 1, sec, info, |
19e08130 | 8659 | NULL, h, sym)) |
0a1b45a2 | 8660 | return false; |
102890f0 AM |
8661 | } |
8662 | } | |
411e1bfb | 8663 | |
46e9995a | 8664 | *tls_mask |= tls_set & 0xff; |
102890f0 AM |
8665 | *tls_mask &= ~tls_clear; |
8666 | } | |
8c1d1bb8 | 8667 | |
102890f0 AM |
8668 | if (elf_section_data (sec)->relocs != relstart) |
8669 | free (relstart); | |
8670 | } | |
411e1bfb | 8671 | |
663a1470 AM |
8672 | if (locsyms != NULL |
8673 | && (elf_symtab_hdr (ibfd).contents != (unsigned char *) locsyms)) | |
8674 | { | |
8675 | if (!info->keep_memory) | |
8676 | free (locsyms); | |
8677 | else | |
8678 | elf_symtab_hdr (ibfd).contents = (unsigned char *) locsyms; | |
8679 | } | |
8680 | } | |
411e1bfb | 8681 | |
c9594989 | 8682 | free (toc_ref); |
0a1b45a2 | 8683 | return true; |
1e2f5b6e | 8684 | } |
b34976b6 | 8685 | |
c5614fa4 AM |
8686 | /* Called via elf_link_hash_traverse from ppc64_elf_edit_toc to adjust |
8687 | the values of any global symbols in a toc section that has been | |
8688 | edited. Globals in toc sections should be a rarity, so this function | |
8689 | sets a flag if any are found in toc sections other than the one just | |
de194d85 | 8690 | edited, so that further hash table traversals can be avoided. */ |
c5614fa4 AM |
8691 | |
8692 | struct adjust_toc_info | |
8693 | { | |
8694 | asection *toc; | |
8695 | unsigned long *skip; | |
0a1b45a2 | 8696 | bool global_toc_syms; |
c5614fa4 AM |
8697 | }; |
8698 | ||
ba761f19 AM |
8699 | enum toc_skip_enum { ref_from_discarded = 1, can_optimize = 2 }; |
8700 | ||
0a1b45a2 | 8701 | static bool |
c5614fa4 AM |
8702 | adjust_toc_syms (struct elf_link_hash_entry *h, void *inf) |
8703 | { | |
8704 | struct ppc_link_hash_entry *eh; | |
8705 | struct adjust_toc_info *toc_inf = (struct adjust_toc_info *) inf; | |
854b41e7 | 8706 | unsigned long i; |
c5614fa4 | 8707 | |
c5614fa4 AM |
8708 | if (h->root.type != bfd_link_hash_defined |
8709 | && h->root.type != bfd_link_hash_defweak) | |
0a1b45a2 | 8710 | return true; |
c5614fa4 | 8711 | |
ed7007c1 | 8712 | eh = ppc_elf_hash_entry (h); |
c5614fa4 | 8713 | if (eh->adjust_done) |
0a1b45a2 | 8714 | return true; |
c5614fa4 AM |
8715 | |
8716 | if (eh->elf.root.u.def.section == toc_inf->toc) | |
8717 | { | |
854b41e7 AM |
8718 | if (eh->elf.root.u.def.value > toc_inf->toc->rawsize) |
8719 | i = toc_inf->toc->rawsize >> 3; | |
c5614fa4 | 8720 | else |
854b41e7 AM |
8721 | i = eh->elf.root.u.def.value >> 3; |
8722 | ||
ba761f19 | 8723 | if ((toc_inf->skip[i] & (ref_from_discarded | can_optimize)) != 0) |
c5614fa4 | 8724 | { |
4eca0228 | 8725 | _bfd_error_handler |
854b41e7 AM |
8726 | (_("%s defined on removed toc entry"), eh->elf.root.root.string); |
8727 | do | |
8728 | ++i; | |
ba761f19 | 8729 | while ((toc_inf->skip[i] & (ref_from_discarded | can_optimize)) != 0); |
854b41e7 | 8730 | eh->elf.root.u.def.value = (bfd_vma) i << 3; |
c5614fa4 | 8731 | } |
854b41e7 AM |
8732 | |
8733 | eh->elf.root.u.def.value -= toc_inf->skip[i]; | |
c5614fa4 AM |
8734 | eh->adjust_done = 1; |
8735 | } | |
8736 | else if (strcmp (eh->elf.root.u.def.section->name, ".toc") == 0) | |
0a1b45a2 | 8737 | toc_inf->global_toc_syms = true; |
c5614fa4 | 8738 | |
0a1b45a2 | 8739 | return true; |
c5614fa4 AM |
8740 | } |
8741 | ||
39eeab25 AM |
8742 | /* Return TRUE iff INSN with a relocation of R_TYPE is one we expect |
8743 | on a _LO variety toc/got reloc. */ | |
560c8763 | 8744 | |
0a1b45a2 | 8745 | static bool |
39eeab25 | 8746 | ok_lo_toc_insn (unsigned int insn, enum elf_ppc64_reloc_type r_type) |
560c8763 | 8747 | { |
2365f8d7 AM |
8748 | return ((insn & (0x3fu << 26)) == 12u << 26 /* addic */ |
8749 | || (insn & (0x3fu << 26)) == 14u << 26 /* addi */ | |
8750 | || (insn & (0x3fu << 26)) == 32u << 26 /* lwz */ | |
8751 | || (insn & (0x3fu << 26)) == 34u << 26 /* lbz */ | |
8752 | || (insn & (0x3fu << 26)) == 36u << 26 /* stw */ | |
8753 | || (insn & (0x3fu << 26)) == 38u << 26 /* stb */ | |
8754 | || (insn & (0x3fu << 26)) == 40u << 26 /* lhz */ | |
8755 | || (insn & (0x3fu << 26)) == 42u << 26 /* lha */ | |
8756 | || (insn & (0x3fu << 26)) == 44u << 26 /* sth */ | |
8757 | || (insn & (0x3fu << 26)) == 46u << 26 /* lmw */ | |
8758 | || (insn & (0x3fu << 26)) == 47u << 26 /* stmw */ | |
8759 | || (insn & (0x3fu << 26)) == 48u << 26 /* lfs */ | |
8760 | || (insn & (0x3fu << 26)) == 50u << 26 /* lfd */ | |
8761 | || (insn & (0x3fu << 26)) == 52u << 26 /* stfs */ | |
8762 | || (insn & (0x3fu << 26)) == 54u << 26 /* stfd */ | |
8763 | || (insn & (0x3fu << 26)) == 56u << 26 /* lq,lfq */ | |
8764 | || ((insn & (0x3fu << 26)) == 57u << 26 /* lxsd,lxssp,lfdp */ | |
39eeab25 AM |
8765 | /* Exclude lfqu by testing reloc. If relocs are ever |
8766 | defined for the reduced D field in psq_lu then those | |
8767 | will need testing too. */ | |
8768 | && r_type != R_PPC64_TOC16_LO && r_type != R_PPC64_GOT16_LO) | |
2365f8d7 | 8769 | || ((insn & (0x3fu << 26)) == 58u << 26 /* ld,lwa */ |
39eeab25 | 8770 | && (insn & 1) == 0) |
2365f8d7 AM |
8771 | || (insn & (0x3fu << 26)) == 60u << 26 /* stfq */ |
8772 | || ((insn & (0x3fu << 26)) == 61u << 26 /* lxv,stx{v,sd,ssp},stfdp */ | |
39eeab25 AM |
8773 | /* Exclude stfqu. psq_stu as above for psq_lu. */ |
8774 | && r_type != R_PPC64_TOC16_LO && r_type != R_PPC64_GOT16_LO) | |
2365f8d7 | 8775 | || ((insn & (0x3fu << 26)) == 62u << 26 /* std,stq */ |
39eeab25 | 8776 | && (insn & 1) == 0)); |
560c8763 AM |
8777 | } |
8778 | ||
4a421c53 AM |
8779 | /* PCREL_OPT in one instance flags to the linker that a pair of insns: |
8780 | pld ra,symbol@got@pcrel | |
dd9b12c2 | 8781 | load/store rt,off(ra) |
4a421c53 | 8782 | or |
d4b87b1e | 8783 | pla ra,symbol@pcrel |
dd9b12c2 | 8784 | load/store rt,off(ra) |
4a421c53 | 8785 | may be translated to |
dd9b12c2 | 8786 | pload/pstore rt,symbol+off@pcrel |
4a421c53 AM |
8787 | nop. |
8788 | This function returns true if the optimization is possible, placing | |
dd9b12c2 | 8789 | the prefix insn in *PINSN1, a NOP in *PINSN2 and the offset in *POFF. |
4a421c53 AM |
8790 | |
8791 | On entry to this function, the linker has already determined that | |
d4b87b1e | 8792 | the pld can be replaced with pla: *PINSN1 is that pla insn, |
4a421c53 AM |
8793 | while *PINSN2 is the second instruction. */ |
8794 | ||
0a1b45a2 | 8795 | static bool |
dd9b12c2 | 8796 | xlate_pcrel_opt (uint64_t *pinsn1, uint64_t *pinsn2, bfd_signed_vma *poff) |
4a421c53 | 8797 | { |
77486630 AM |
8798 | uint64_t insn1 = *pinsn1; |
8799 | uint64_t insn2 = *pinsn2; | |
dd9b12c2 | 8800 | bfd_signed_vma off; |
4a421c53 | 8801 | |
77486630 AM |
8802 | if ((insn2 & (63ULL << 58)) == 1ULL << 58) |
8803 | { | |
8804 | /* Check that regs match. */ | |
8805 | if (((insn2 >> 16) & 31) != ((insn1 >> 21) & 31)) | |
0a1b45a2 | 8806 | return false; |
77486630 AM |
8807 | |
8808 | /* P8LS or PMLS form, non-pcrel. */ | |
8809 | if ((insn2 & (-1ULL << 50) & ~(1ULL << 56)) != (1ULL << 58)) | |
0a1b45a2 | 8810 | return false; |
77486630 AM |
8811 | |
8812 | *pinsn1 = (insn2 & ~(31 << 16) & ~0x3ffff0000ffffULL) | (1ULL << 52); | |
8813 | *pinsn2 = PNOP; | |
8814 | off = ((insn2 >> 16) & 0x3ffff0000ULL) | (insn2 & 0xffff); | |
8815 | *poff = (off ^ 0x200000000ULL) - 0x200000000ULL; | |
0a1b45a2 | 8816 | return true; |
77486630 AM |
8817 | } |
8818 | ||
8819 | insn2 >>= 32; | |
8820 | ||
4a421c53 | 8821 | /* Check that regs match. */ |
77486630 | 8822 | if (((insn2 >> 16) & 31) != ((insn1 >> 21) & 31)) |
0a1b45a2 | 8823 | return false; |
4a421c53 AM |
8824 | |
8825 | switch ((insn2 >> 26) & 63) | |
8826 | { | |
8827 | default: | |
0a1b45a2 | 8828 | return false; |
4a421c53 AM |
8829 | |
8830 | case 32: /* lwz */ | |
8831 | case 34: /* lbz */ | |
8832 | case 36: /* stw */ | |
8833 | case 38: /* stb */ | |
8834 | case 40: /* lhz */ | |
8835 | case 42: /* lha */ | |
8836 | case 44: /* sth */ | |
8837 | case 48: /* lfs */ | |
8838 | case 50: /* lfd */ | |
8839 | case 52: /* stfs */ | |
8840 | case 54: /* stfd */ | |
8841 | /* These are the PMLS cases, where we just need to tack a prefix | |
dd9b12c2 | 8842 | on the insn. */ |
77486630 | 8843 | insn1 = ((1ULL << 58) | (2ULL << 56) | (1ULL << 52) |
4a421c53 | 8844 | | (insn2 & ((63ULL << 26) | (31ULL << 21)))); |
dd9b12c2 | 8845 | off = insn2 & 0xffff; |
4a421c53 AM |
8846 | break; |
8847 | ||
8848 | case 58: /* lwa, ld */ | |
dd9b12c2 | 8849 | if ((insn2 & 1) != 0) |
0a1b45a2 | 8850 | return false; |
77486630 | 8851 | insn1 = ((1ULL << 58) | (1ULL << 52) |
4a421c53 AM |
8852 | | (insn2 & 2 ? 41ULL << 26 : 57ULL << 26) |
8853 | | (insn2 & (31ULL << 21))); | |
dd9b12c2 | 8854 | off = insn2 & 0xfffc; |
4a421c53 AM |
8855 | break; |
8856 | ||
8857 | case 57: /* lxsd, lxssp */ | |
dd9b12c2 | 8858 | if ((insn2 & 3) < 2) |
0a1b45a2 | 8859 | return false; |
77486630 | 8860 | insn1 = ((1ULL << 58) | (1ULL << 52) |
4a421c53 AM |
8861 | | ((40ULL | (insn2 & 3)) << 26) |
8862 | | (insn2 & (31ULL << 21))); | |
dd9b12c2 | 8863 | off = insn2 & 0xfffc; |
4a421c53 AM |
8864 | break; |
8865 | ||
8866 | case 61: /* stxsd, stxssp, lxv, stxv */ | |
8867 | if ((insn2 & 3) == 0) | |
0a1b45a2 | 8868 | return false; |
4a421c53 AM |
8869 | else if ((insn2 & 3) >= 2) |
8870 | { | |
77486630 | 8871 | insn1 = ((1ULL << 58) | (1ULL << 52) |
4a421c53 AM |
8872 | | ((44ULL | (insn2 & 3)) << 26) |
8873 | | (insn2 & (31ULL << 21))); | |
dd9b12c2 | 8874 | off = insn2 & 0xfffc; |
4a421c53 AM |
8875 | } |
8876 | else | |
8877 | { | |
77486630 | 8878 | insn1 = ((1ULL << 58) | (1ULL << 52) |
4a421c53 AM |
8879 | | ((50ULL | (insn2 & 4) | ((insn2 & 8) >> 3)) << 26) |
8880 | | (insn2 & (31ULL << 21))); | |
dd9b12c2 | 8881 | off = insn2 & 0xfff0; |
4a421c53 AM |
8882 | } |
8883 | break; | |
8884 | ||
8885 | case 56: /* lq */ | |
77486630 | 8886 | insn1 = ((1ULL << 58) | (1ULL << 52) |
4a421c53 | 8887 | | (insn2 & ((63ULL << 26) | (31ULL << 21)))); |
dd9b12c2 | 8888 | off = insn2 & 0xffff; |
4a421c53 AM |
8889 | break; |
8890 | ||
94ba9882 AM |
8891 | case 6: /* lxvp, stxvp */ |
8892 | if ((insn2 & 0xe) != 0) | |
0a1b45a2 | 8893 | return false; |
94ba9882 AM |
8894 | insn1 = ((1ULL << 58) | (1ULL << 52) |
8895 | | ((insn2 & 1) == 0 ? 58ULL << 26 : 62ULL << 26) | |
8896 | | (insn2 & (31ULL << 21))); | |
8897 | off = insn2 & 0xfff0; | |
8898 | break; | |
8899 | ||
4a421c53 | 8900 | case 62: /* std, stq */ |
dd9b12c2 | 8901 | if ((insn2 & 1) != 0) |
0a1b45a2 | 8902 | return false; |
77486630 | 8903 | insn1 = ((1ULL << 58) | (1ULL << 52) |
4a421c53 AM |
8904 | | ((insn2 & 2) == 0 ? 61ULL << 26 : 60ULL << 26) |
8905 | | (insn2 & (31ULL << 21))); | |
dd9b12c2 | 8906 | off = insn2 & 0xfffc; |
4a421c53 AM |
8907 | break; |
8908 | } | |
8909 | ||
77486630 | 8910 | *pinsn1 = insn1; |
4a421c53 | 8911 | *pinsn2 = (uint64_t) NOP << 32; |
dd9b12c2 | 8912 | *poff = (off ^ 0x8000) - 0x8000; |
0a1b45a2 | 8913 | return true; |
4a421c53 AM |
8914 | } |
8915 | ||
c5614fa4 AM |
8916 | /* Examine all relocs referencing .toc sections in order to remove |
8917 | unused .toc entries. */ | |
8918 | ||
0a1b45a2 | 8919 | bool |
33c0ec9d | 8920 | ppc64_elf_edit_toc (struct bfd_link_info *info) |
c5614fa4 AM |
8921 | { |
8922 | bfd *ibfd; | |
8923 | struct adjust_toc_info toc_inf; | |
67f0cbdb | 8924 | struct ppc_link_hash_table *htab = ppc_hash_table (info); |
c5614fa4 | 8925 | |
67f0cbdb | 8926 | htab->do_toc_opt = 1; |
0a1b45a2 | 8927 | toc_inf.global_toc_syms = true; |
c72f2fb2 | 8928 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next) |
c5614fa4 AM |
8929 | { |
8930 | asection *toc, *sec; | |
8931 | Elf_Internal_Shdr *symtab_hdr; | |
8932 | Elf_Internal_Sym *local_syms; | |
425b145b | 8933 | Elf_Internal_Rela *relstart, *rel, *toc_relocs; |
c5614fa4 AM |
8934 | unsigned long *skip, *drop; |
8935 | unsigned char *used; | |
8936 | unsigned char *keep, last, some_unused; | |
8937 | ||
854b41e7 AM |
8938 | if (!is_ppc64_elf (ibfd)) |
8939 | continue; | |
8940 | ||
c5614fa4 AM |
8941 | toc = bfd_get_section_by_name (ibfd, ".toc"); |
8942 | if (toc == NULL | |
92b7a70f | 8943 | || toc->size == 0 |
81ff113f | 8944 | || (toc->flags & SEC_HAS_CONTENTS) == 0 |
dbaa2011 AM |
8945 | || toc->sec_info_type == SEC_INFO_TYPE_JUST_SYMS |
8946 | || discarded_section (toc)) | |
c5614fa4 AM |
8947 | continue; |
8948 | ||
425b145b | 8949 | toc_relocs = NULL; |
c5614fa4 | 8950 | local_syms = NULL; |
0ffa91dd | 8951 | symtab_hdr = &elf_symtab_hdr (ibfd); |
c5614fa4 AM |
8952 | |
8953 | /* Look at sections dropped from the final link. */ | |
8954 | skip = NULL; | |
8955 | relstart = NULL; | |
8956 | for (sec = ibfd->sections; sec != NULL; sec = sec->next) | |
8957 | { | |
8958 | if (sec->reloc_count == 0 | |
dbaa2011 | 8959 | || !discarded_section (sec) |
c5614fa4 AM |
8960 | || get_opd_info (sec) |
8961 | || (sec->flags & SEC_ALLOC) == 0 | |
8962 | || (sec->flags & SEC_DEBUGGING) != 0) | |
8963 | continue; | |
8964 | ||
0a1b45a2 | 8965 | relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL, false); |
c5614fa4 AM |
8966 | if (relstart == NULL) |
8967 | goto error_ret; | |
8968 | ||
8969 | /* Run through the relocs to see which toc entries might be | |
8970 | unused. */ | |
8971 | for (rel = relstart; rel < relstart + sec->reloc_count; ++rel) | |
8972 | { | |
8973 | enum elf_ppc64_reloc_type r_type; | |
8974 | unsigned long r_symndx; | |
8975 | asection *sym_sec; | |
8976 | struct elf_link_hash_entry *h; | |
8977 | Elf_Internal_Sym *sym; | |
8978 | bfd_vma val; | |
8979 | ||
8980 | r_type = ELF64_R_TYPE (rel->r_info); | |
8981 | switch (r_type) | |
8982 | { | |
8983 | default: | |
8984 | continue; | |
8985 | ||
8986 | case R_PPC64_TOC16: | |
8987 | case R_PPC64_TOC16_LO: | |
8988 | case R_PPC64_TOC16_HI: | |
8989 | case R_PPC64_TOC16_HA: | |
8990 | case R_PPC64_TOC16_DS: | |
8991 | case R_PPC64_TOC16_LO_DS: | |
8992 | break; | |
8993 | } | |
8994 | ||
8995 | r_symndx = ELF64_R_SYM (rel->r_info); | |
8996 | if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, | |
8997 | r_symndx, ibfd)) | |
8998 | goto error_ret; | |
8999 | ||
9000 | if (sym_sec != toc) | |
9001 | continue; | |
9002 | ||
9003 | if (h != NULL) | |
9004 | val = h->root.u.def.value; | |
9005 | else | |
9006 | val = sym->st_value; | |
9007 | val += rel->r_addend; | |
9008 | ||
9009 | if (val >= toc->size) | |
9010 | continue; | |
9011 | ||
9012 | /* Anything in the toc ought to be aligned to 8 bytes. | |
9013 | If not, don't mark as unused. */ | |
9014 | if (val & 7) | |
9015 | continue; | |
9016 | ||
9017 | if (skip == NULL) | |
9018 | { | |
854b41e7 | 9019 | skip = bfd_zmalloc (sizeof (*skip) * (toc->size + 15) / 8); |
c5614fa4 AM |
9020 | if (skip == NULL) |
9021 | goto error_ret; | |
9022 | } | |
9023 | ||
ba761f19 | 9024 | skip[val >> 3] = ref_from_discarded; |
c5614fa4 AM |
9025 | } |
9026 | ||
9027 | if (elf_section_data (sec)->relocs != relstart) | |
9028 | free (relstart); | |
9029 | } | |
9030 | ||
ba761f19 AM |
9031 | /* For largetoc loads of address constants, we can convert |
9032 | . addis rx,2,addr@got@ha | |
9033 | . ld ry,addr@got@l(rx) | |
9034 | to | |
9035 | . addis rx,2,addr@toc@ha | |
9036 | . addi ry,rx,addr@toc@l | |
9037 | when addr is within 2G of the toc pointer. This then means | |
9038 | that the word storing "addr" in the toc is no longer needed. */ | |
68ffbac6 | 9039 | |
ba761f19 AM |
9040 | if (!ppc64_elf_tdata (ibfd)->has_small_toc_reloc |
9041 | && toc->output_section->rawsize < (bfd_vma) 1 << 31 | |
9042 | && toc->reloc_count != 0) | |
9043 | { | |
9044 | /* Read toc relocs. */ | |
425b145b AM |
9045 | toc_relocs = _bfd_elf_link_read_relocs (ibfd, toc, NULL, NULL, |
9046 | info->keep_memory); | |
9047 | if (toc_relocs == NULL) | |
ba761f19 AM |
9048 | goto error_ret; |
9049 | ||
425b145b | 9050 | for (rel = toc_relocs; rel < toc_relocs + toc->reloc_count; ++rel) |
ba761f19 AM |
9051 | { |
9052 | enum elf_ppc64_reloc_type r_type; | |
9053 | unsigned long r_symndx; | |
9054 | asection *sym_sec; | |
9055 | struct elf_link_hash_entry *h; | |
9056 | Elf_Internal_Sym *sym; | |
9057 | bfd_vma val, addr; | |
9058 | ||
9059 | r_type = ELF64_R_TYPE (rel->r_info); | |
9060 | if (r_type != R_PPC64_ADDR64) | |
9061 | continue; | |
9062 | ||
9063 | r_symndx = ELF64_R_SYM (rel->r_info); | |
9064 | if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, | |
9065 | r_symndx, ibfd)) | |
9066 | goto error_ret; | |
9067 | ||
425b145b | 9068 | if (sym_sec == NULL |
c27b8c2a | 9069 | || sym_sec->output_section == NULL |
dbaa2011 | 9070 | || discarded_section (sym_sec)) |
425b145b AM |
9071 | continue; |
9072 | ||
3a3a4c1f AM |
9073 | if (!SYMBOL_REFERENCES_LOCAL (info, h) |
9074 | || (bfd_link_pic (info) | |
9075 | && sym_sec == bfd_abs_section_ptr)) | |
ba761f19 AM |
9076 | continue; |
9077 | ||
9078 | if (h != NULL) | |
bddc25c9 AM |
9079 | { |
9080 | if (h->type == STT_GNU_IFUNC) | |
9081 | continue; | |
9082 | val = h->root.u.def.value; | |
9083 | } | |
ba761f19 | 9084 | else |
bddc25c9 AM |
9085 | { |
9086 | if (ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC) | |
9087 | continue; | |
9088 | val = sym->st_value; | |
9089 | } | |
ba761f19 AM |
9090 | val += rel->r_addend; |
9091 | val += sym_sec->output_section->vma + sym_sec->output_offset; | |
9092 | ||
9093 | /* We don't yet know the exact toc pointer value, but we | |
9094 | know it will be somewhere in the toc section. Don't | |
9095 | optimize if the difference from any possible toc | |
9096 | pointer is outside [ff..f80008000, 7fff7fff]. */ | |
9097 | addr = toc->output_section->vma + TOC_BASE_OFF; | |
9098 | if (val - addr + (bfd_vma) 0x80008000 >= (bfd_vma) 1 << 32) | |
9099 | continue; | |
9100 | ||
9101 | addr = toc->output_section->vma + toc->output_section->rawsize; | |
9102 | if (val - addr + (bfd_vma) 0x80008000 >= (bfd_vma) 1 << 32) | |
9103 | continue; | |
9104 | ||
9105 | if (skip == NULL) | |
9106 | { | |
9107 | skip = bfd_zmalloc (sizeof (*skip) * (toc->size + 15) / 8); | |
9108 | if (skip == NULL) | |
9109 | goto error_ret; | |
9110 | } | |
9111 | ||
9112 | skip[rel->r_offset >> 3] | |
425b145b | 9113 | |= can_optimize | ((rel - toc_relocs) << 2); |
ba761f19 | 9114 | } |
ba761f19 AM |
9115 | } |
9116 | ||
c5614fa4 AM |
9117 | if (skip == NULL) |
9118 | continue; | |
9119 | ||
9120 | used = bfd_zmalloc (sizeof (*used) * (toc->size + 7) / 8); | |
9121 | if (used == NULL) | |
9122 | { | |
9123 | error_ret: | |
c9594989 | 9124 | if (symtab_hdr->contents != (unsigned char *) local_syms) |
c5614fa4 AM |
9125 | free (local_syms); |
9126 | if (sec != NULL | |
c5614fa4 AM |
9127 | && elf_section_data (sec)->relocs != relstart) |
9128 | free (relstart); | |
c9594989 | 9129 | if (elf_section_data (toc)->relocs != toc_relocs) |
425b145b | 9130 | free (toc_relocs); |
c9594989 | 9131 | free (skip); |
0a1b45a2 | 9132 | return false; |
c5614fa4 AM |
9133 | } |
9134 | ||
30038c59 AM |
9135 | /* Now check all kept sections that might reference the toc. |
9136 | Check the toc itself last. */ | |
9137 | for (sec = (ibfd->sections == toc && toc->next ? toc->next | |
9138 | : ibfd->sections); | |
c5614fa4 | 9139 | sec != NULL; |
c5614fa4 | 9140 | sec = (sec == toc ? NULL |
c5614fa4 | 9141 | : sec->next == NULL ? toc |
30038c59 | 9142 | : sec->next == toc && toc->next ? toc->next |
c5614fa4 AM |
9143 | : sec->next)) |
9144 | { | |
9145 | int repeat; | |
9146 | ||
9147 | if (sec->reloc_count == 0 | |
dbaa2011 | 9148 | || discarded_section (sec) |
c5614fa4 AM |
9149 | || get_opd_info (sec) |
9150 | || (sec->flags & SEC_ALLOC) == 0 | |
9151 | || (sec->flags & SEC_DEBUGGING) != 0) | |
9152 | continue; | |
9153 | ||
854b41e7 AM |
9154 | relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL, |
9155 | info->keep_memory); | |
c5614fa4 | 9156 | if (relstart == NULL) |
2915c55b JK |
9157 | { |
9158 | free (used); | |
9159 | goto error_ret; | |
9160 | } | |
c5614fa4 AM |
9161 | |
9162 | /* Mark toc entries referenced as used. */ | |
c5614fa4 | 9163 | do |
d4f1ee75 AM |
9164 | { |
9165 | repeat = 0; | |
9166 | for (rel = relstart; rel < relstart + sec->reloc_count; ++rel) | |
9167 | { | |
9168 | enum elf_ppc64_reloc_type r_type; | |
9169 | unsigned long r_symndx; | |
9170 | asection *sym_sec; | |
9171 | struct elf_link_hash_entry *h; | |
9172 | Elf_Internal_Sym *sym; | |
9173 | bfd_vma val; | |
98528052 | 9174 | |
d4f1ee75 | 9175 | r_type = ELF64_R_TYPE (rel->r_info); |
d4f1ee75 AM |
9176 | switch (r_type) |
9177 | { | |
9178 | case R_PPC64_TOC16: | |
9179 | case R_PPC64_TOC16_LO: | |
9180 | case R_PPC64_TOC16_HI: | |
9181 | case R_PPC64_TOC16_HA: | |
9182 | case R_PPC64_TOC16_DS: | |
9183 | case R_PPC64_TOC16_LO_DS: | |
9184 | /* In case we're taking addresses of toc entries. */ | |
9185 | case R_PPC64_ADDR64: | |
9186 | break; | |
c5614fa4 | 9187 | |
d4f1ee75 AM |
9188 | default: |
9189 | continue; | |
9190 | } | |
c5614fa4 | 9191 | |
d4f1ee75 AM |
9192 | r_symndx = ELF64_R_SYM (rel->r_info); |
9193 | if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, | |
9194 | r_symndx, ibfd)) | |
9195 | { | |
9196 | free (used); | |
9197 | goto error_ret; | |
9198 | } | |
c5614fa4 | 9199 | |
d4f1ee75 AM |
9200 | if (sym_sec != toc) |
9201 | continue; | |
c5614fa4 | 9202 | |
d4f1ee75 AM |
9203 | if (h != NULL) |
9204 | val = h->root.u.def.value; | |
9205 | else | |
9206 | val = sym->st_value; | |
9207 | val += rel->r_addend; | |
ba761f19 | 9208 | |
d4f1ee75 AM |
9209 | if (val >= toc->size) |
9210 | continue; | |
ba761f19 | 9211 | |
d4f1ee75 AM |
9212 | if ((skip[val >> 3] & can_optimize) != 0) |
9213 | { | |
9214 | bfd_vma off; | |
9215 | unsigned char opc; | |
9216 | ||
9217 | switch (r_type) | |
9218 | { | |
9219 | case R_PPC64_TOC16_HA: | |
ba761f19 | 9220 | break; |
ba761f19 | 9221 | |
d4f1ee75 AM |
9222 | case R_PPC64_TOC16_LO_DS: |
9223 | off = rel->r_offset; | |
9224 | off += (bfd_big_endian (ibfd) ? -2 : 3); | |
9225 | if (!bfd_get_section_contents (ibfd, sec, &opc, | |
9226 | off, 1)) | |
9227 | { | |
9228 | free (used); | |
9229 | goto error_ret; | |
9230 | } | |
9231 | if ((opc & (0x3f << 2)) == (58u << 2)) | |
9232 | break; | |
1a0670f3 | 9233 | /* Fall through. */ |
ba761f19 | 9234 | |
d4f1ee75 AM |
9235 | default: |
9236 | /* Wrong sort of reloc, or not a ld. We may | |
9237 | as well clear ref_from_discarded too. */ | |
9238 | skip[val >> 3] = 0; | |
9239 | } | |
9240 | } | |
9241 | ||
9242 | if (sec != toc) | |
9243 | used[val >> 3] = 1; | |
9244 | /* For the toc section, we only mark as used if this | |
9245 | entry itself isn't unused. */ | |
9246 | else if ((used[rel->r_offset >> 3] | |
9247 | || !(skip[rel->r_offset >> 3] & ref_from_discarded)) | |
9248 | && !used[val >> 3]) | |
9249 | { | |
9250 | /* Do all the relocs again, to catch reference | |
9251 | chains. */ | |
9252 | repeat = 1; | |
9253 | used[val >> 3] = 1; | |
9254 | } | |
9255 | } | |
9256 | } | |
c5614fa4 | 9257 | while (repeat); |
854b41e7 AM |
9258 | |
9259 | if (elf_section_data (sec)->relocs != relstart) | |
9260 | free (relstart); | |
c5614fa4 AM |
9261 | } |
9262 | ||
9263 | /* Merge the used and skip arrays. Assume that TOC | |
9264 | doublewords not appearing as either used or unused belong | |
de194d85 | 9265 | to an entry more than one doubleword in size. */ |
c5614fa4 AM |
9266 | for (drop = skip, keep = used, last = 0, some_unused = 0; |
9267 | drop < skip + (toc->size + 7) / 8; | |
9268 | ++drop, ++keep) | |
9269 | { | |
9270 | if (*keep) | |
9271 | { | |
ba761f19 AM |
9272 | *drop &= ~ref_from_discarded; |
9273 | if ((*drop & can_optimize) != 0) | |
9274 | some_unused = 1; | |
c5614fa4 AM |
9275 | last = 0; |
9276 | } | |
b140b010 | 9277 | else if ((*drop & ref_from_discarded) != 0) |
c5614fa4 AM |
9278 | { |
9279 | some_unused = 1; | |
ba761f19 | 9280 | last = ref_from_discarded; |
c5614fa4 AM |
9281 | } |
9282 | else | |
9283 | *drop = last; | |
9284 | } | |
9285 | ||
9286 | free (used); | |
9287 | ||
9288 | if (some_unused) | |
9289 | { | |
9290 | bfd_byte *contents, *src; | |
9291 | unsigned long off; | |
d62b3684 | 9292 | Elf_Internal_Sym *sym; |
0a1b45a2 | 9293 | bool local_toc_syms = false; |
c5614fa4 AM |
9294 | |
9295 | /* Shuffle the toc contents, and at the same time convert the | |
9296 | skip array from booleans into offsets. */ | |
9297 | if (!bfd_malloc_and_get_section (ibfd, toc, &contents)) | |
9298 | goto error_ret; | |
9299 | ||
9300 | elf_section_data (toc)->this_hdr.contents = contents; | |
9301 | ||
9302 | for (src = contents, off = 0, drop = skip; | |
9303 | src < contents + toc->size; | |
9304 | src += 8, ++drop) | |
9305 | { | |
ba761f19 AM |
9306 | if ((*drop & (can_optimize | ref_from_discarded)) != 0) |
9307 | off += 8; | |
c5614fa4 AM |
9308 | else if (off != 0) |
9309 | { | |
9310 | *drop = off; | |
9311 | memcpy (src - off, src, 8); | |
9312 | } | |
9313 | } | |
854b41e7 | 9314 | *drop = off; |
c5614fa4 AM |
9315 | toc->rawsize = toc->size; |
9316 | toc->size = src - contents - off; | |
9317 | ||
ba761f19 AM |
9318 | /* Adjust addends for relocs against the toc section sym, |
9319 | and optimize any accesses we can. */ | |
c5614fa4 AM |
9320 | for (sec = ibfd->sections; sec != NULL; sec = sec->next) |
9321 | { | |
9322 | if (sec->reloc_count == 0 | |
dbaa2011 | 9323 | || discarded_section (sec)) |
c5614fa4 AM |
9324 | continue; |
9325 | ||
9326 | relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL, | |
854b41e7 | 9327 | info->keep_memory); |
c5614fa4 AM |
9328 | if (relstart == NULL) |
9329 | goto error_ret; | |
9330 | ||
9331 | for (rel = relstart; rel < relstart + sec->reloc_count; ++rel) | |
9332 | { | |
9333 | enum elf_ppc64_reloc_type r_type; | |
9334 | unsigned long r_symndx; | |
9335 | asection *sym_sec; | |
9336 | struct elf_link_hash_entry *h; | |
854b41e7 | 9337 | bfd_vma val; |
c5614fa4 AM |
9338 | |
9339 | r_type = ELF64_R_TYPE (rel->r_info); | |
9340 | switch (r_type) | |
9341 | { | |
9342 | default: | |
9343 | continue; | |
9344 | ||
9345 | case R_PPC64_TOC16: | |
9346 | case R_PPC64_TOC16_LO: | |
9347 | case R_PPC64_TOC16_HI: | |
9348 | case R_PPC64_TOC16_HA: | |
9349 | case R_PPC64_TOC16_DS: | |
9350 | case R_PPC64_TOC16_LO_DS: | |
9351 | case R_PPC64_ADDR64: | |
9352 | break; | |
9353 | } | |
9354 | ||
9355 | r_symndx = ELF64_R_SYM (rel->r_info); | |
9356 | if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, | |
9357 | r_symndx, ibfd)) | |
9358 | goto error_ret; | |
9359 | ||
ba761f19 | 9360 | if (sym_sec != toc) |
c5614fa4 AM |
9361 | continue; |
9362 | ||
ba761f19 AM |
9363 | if (h != NULL) |
9364 | val = h->root.u.def.value; | |
9365 | else | |
9366 | { | |
9367 | val = sym->st_value; | |
9368 | if (val != 0) | |
0a1b45a2 | 9369 | local_toc_syms = true; |
ba761f19 AM |
9370 | } |
9371 | ||
9372 | val += rel->r_addend; | |
854b41e7 AM |
9373 | |
9374 | if (val > toc->rawsize) | |
9375 | val = toc->rawsize; | |
ba761f19 AM |
9376 | else if ((skip[val >> 3] & ref_from_discarded) != 0) |
9377 | continue; | |
9378 | else if ((skip[val >> 3] & can_optimize) != 0) | |
9379 | { | |
9380 | Elf_Internal_Rela *tocrel | |
425b145b | 9381 | = toc_relocs + (skip[val >> 3] >> 2); |
ba761f19 AM |
9382 | unsigned long tsym = ELF64_R_SYM (tocrel->r_info); |
9383 | ||
9384 | switch (r_type) | |
9385 | { | |
9386 | case R_PPC64_TOC16_HA: | |
9387 | rel->r_info = ELF64_R_INFO (tsym, R_PPC64_TOC16_HA); | |
9388 | break; | |
9389 | ||
9390 | case R_PPC64_TOC16_LO_DS: | |
9391 | rel->r_info = ELF64_R_INFO (tsym, R_PPC64_LO_DS_OPT); | |
9392 | break; | |
9393 | ||
9394 | default: | |
28942f62 AM |
9395 | if (!ppc64_elf_howto_table[R_PPC64_ADDR32]) |
9396 | ppc_howto_init (); | |
b140b010 | 9397 | info->callbacks->einfo |
695344c0 | 9398 | /* xgettext:c-format */ |
174d0a74 | 9399 | (_("%H: %s references " |
b140b010 AM |
9400 | "optimized away TOC entry\n"), |
9401 | ibfd, sec, rel->r_offset, | |
9402 | ppc64_elf_howto_table[r_type]->name); | |
9403 | bfd_set_error (bfd_error_bad_value); | |
9404 | goto error_ret; | |
ba761f19 AM |
9405 | } |
9406 | rel->r_addend = tocrel->r_addend; | |
9407 | elf_section_data (sec)->relocs = relstart; | |
9408 | continue; | |
9409 | } | |
9410 | ||
9411 | if (h != NULL || sym->st_value != 0) | |
9412 | continue; | |
854b41e7 AM |
9413 | |
9414 | rel->r_addend -= skip[val >> 3]; | |
9415 | elf_section_data (sec)->relocs = relstart; | |
c5614fa4 | 9416 | } |
854b41e7 AM |
9417 | |
9418 | if (elf_section_data (sec)->relocs != relstart) | |
9419 | free (relstart); | |
c5614fa4 AM |
9420 | } |
9421 | ||
9422 | /* We shouldn't have local or global symbols defined in the TOC, | |
9423 | but handle them anyway. */ | |
df22d223 AM |
9424 | if (local_syms != NULL) |
9425 | for (sym = local_syms; | |
9426 | sym < local_syms + symtab_hdr->sh_info; | |
9427 | ++sym) | |
9428 | if (sym->st_value != 0 | |
9429 | && bfd_section_from_elf_index (ibfd, sym->st_shndx) == toc) | |
9430 | { | |
9431 | unsigned long i; | |
854b41e7 | 9432 | |
df22d223 AM |
9433 | if (sym->st_value > toc->rawsize) |
9434 | i = toc->rawsize >> 3; | |
9435 | else | |
9436 | i = sym->st_value >> 3; | |
854b41e7 | 9437 | |
df22d223 AM |
9438 | if ((skip[i] & (ref_from_discarded | can_optimize)) != 0) |
9439 | { | |
9440 | if (local_toc_syms) | |
4eca0228 | 9441 | _bfd_error_handler |
df22d223 AM |
9442 | (_("%s defined on removed toc entry"), |
9443 | bfd_elf_sym_name (ibfd, symtab_hdr, sym, NULL)); | |
9444 | do | |
9445 | ++i; | |
9446 | while ((skip[i] & (ref_from_discarded | can_optimize))); | |
9447 | sym->st_value = (bfd_vma) i << 3; | |
9448 | } | |
d62b3684 | 9449 | |
df22d223 AM |
9450 | sym->st_value -= skip[i]; |
9451 | symtab_hdr->contents = (unsigned char *) local_syms; | |
9452 | } | |
c5614fa4 | 9453 | |
854b41e7 | 9454 | /* Adjust any global syms defined in this toc input section. */ |
c5614fa4 AM |
9455 | if (toc_inf.global_toc_syms) |
9456 | { | |
9457 | toc_inf.toc = toc; | |
9458 | toc_inf.skip = skip; | |
0a1b45a2 | 9459 | toc_inf.global_toc_syms = false; |
c5614fa4 AM |
9460 | elf_link_hash_traverse (elf_hash_table (info), adjust_toc_syms, |
9461 | &toc_inf); | |
9462 | } | |
854b41e7 AM |
9463 | |
9464 | if (toc->reloc_count != 0) | |
9465 | { | |
d4730f92 | 9466 | Elf_Internal_Shdr *rel_hdr; |
854b41e7 AM |
9467 | Elf_Internal_Rela *wrel; |
9468 | bfd_size_type sz; | |
9469 | ||
854b41e7 | 9470 | /* Remove unused toc relocs, and adjust those we keep. */ |
28be611c AM |
9471 | if (toc_relocs == NULL) |
9472 | toc_relocs = _bfd_elf_link_read_relocs (ibfd, toc, NULL, NULL, | |
9473 | info->keep_memory); | |
9474 | if (toc_relocs == NULL) | |
9475 | goto error_ret; | |
9476 | ||
425b145b AM |
9477 | wrel = toc_relocs; |
9478 | for (rel = toc_relocs; rel < toc_relocs + toc->reloc_count; ++rel) | |
ba761f19 AM |
9479 | if ((skip[rel->r_offset >> 3] |
9480 | & (ref_from_discarded | can_optimize)) == 0) | |
854b41e7 AM |
9481 | { |
9482 | wrel->r_offset = rel->r_offset - skip[rel->r_offset >> 3]; | |
9483 | wrel->r_info = rel->r_info; | |
9484 | wrel->r_addend = rel->r_addend; | |
9485 | ++wrel; | |
9486 | } | |
1657026c | 9487 | else if (!dec_dynrel_count (rel, toc, info, |
854b41e7 AM |
9488 | &local_syms, NULL, NULL)) |
9489 | goto error_ret; | |
9490 | ||
425b145b AM |
9491 | elf_section_data (toc)->relocs = toc_relocs; |
9492 | toc->reloc_count = wrel - toc_relocs; | |
d4730f92 BS |
9493 | rel_hdr = _bfd_elf_single_rel_hdr (toc); |
9494 | sz = rel_hdr->sh_entsize; | |
9495 | rel_hdr->sh_size = toc->reloc_count * sz; | |
854b41e7 | 9496 | } |
c5614fa4 | 9497 | } |
c9594989 | 9498 | else if (elf_section_data (toc)->relocs != toc_relocs) |
425b145b | 9499 | free (toc_relocs); |
c5614fa4 AM |
9500 | |
9501 | if (local_syms != NULL | |
9502 | && symtab_hdr->contents != (unsigned char *) local_syms) | |
9503 | { | |
9504 | if (!info->keep_memory) | |
9505 | free (local_syms); | |
9506 | else | |
9507 | symtab_hdr->contents = (unsigned char *) local_syms; | |
9508 | } | |
9509 | free (skip); | |
9510 | } | |
9511 | ||
066f4018 | 9512 | /* Look for cases where we can change an indirect GOT access to |
4a421c53 AM |
9513 | a GOT relative or PC relative access, possibly reducing the |
9514 | number of GOT entries. */ | |
066f4018 AM |
9515 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next) |
9516 | { | |
9517 | asection *sec; | |
9518 | Elf_Internal_Shdr *symtab_hdr; | |
9519 | Elf_Internal_Sym *local_syms; | |
9520 | Elf_Internal_Rela *relstart, *rel; | |
9521 | bfd_vma got; | |
9522 | ||
9523 | if (!is_ppc64_elf (ibfd)) | |
9524 | continue; | |
9525 | ||
903b777d | 9526 | if (!ppc64_elf_tdata (ibfd)->has_optrel) |
066f4018 AM |
9527 | continue; |
9528 | ||
9529 | sec = ppc64_elf_tdata (ibfd)->got; | |
903b777d AM |
9530 | got = 0; |
9531 | if (sec != NULL) | |
9532 | got = sec->output_section->vma + sec->output_offset + 0x8000; | |
066f4018 AM |
9533 | |
9534 | local_syms = NULL; | |
9535 | symtab_hdr = &elf_symtab_hdr (ibfd); | |
9536 | ||
9537 | for (sec = ibfd->sections; sec != NULL; sec = sec->next) | |
9538 | { | |
9539 | if (sec->reloc_count == 0 | |
903b777d | 9540 | || !ppc64_elf_section_data (sec)->has_optrel |
066f4018 AM |
9541 | || discarded_section (sec)) |
9542 | continue; | |
9543 | ||
9544 | relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL, | |
9545 | info->keep_memory); | |
9546 | if (relstart == NULL) | |
9547 | { | |
9548 | got_error_ret: | |
c9594989 | 9549 | if (symtab_hdr->contents != (unsigned char *) local_syms) |
066f4018 AM |
9550 | free (local_syms); |
9551 | if (sec != NULL | |
066f4018 AM |
9552 | && elf_section_data (sec)->relocs != relstart) |
9553 | free (relstart); | |
0a1b45a2 | 9554 | return false; |
066f4018 AM |
9555 | } |
9556 | ||
9557 | for (rel = relstart; rel < relstart + sec->reloc_count; ++rel) | |
9558 | { | |
9559 | enum elf_ppc64_reloc_type r_type; | |
9560 | unsigned long r_symndx; | |
9561 | Elf_Internal_Sym *sym; | |
9562 | asection *sym_sec; | |
9563 | struct elf_link_hash_entry *h; | |
9564 | struct got_entry *ent; | |
133a1f60 | 9565 | bfd_vma val, pc; |
4a421c53 | 9566 | unsigned char buf[8]; |
066f4018 | 9567 | unsigned int insn; |
903b777d | 9568 | enum {no_check, check_lo, check_ha} insn_check; |
066f4018 AM |
9569 | |
9570 | r_type = ELF64_R_TYPE (rel->r_info); | |
903b777d AM |
9571 | switch (r_type) |
9572 | { | |
9573 | default: | |
9574 | insn_check = no_check; | |
9575 | break; | |
9576 | ||
9577 | case R_PPC64_PLT16_HA: | |
9578 | case R_PPC64_GOT_TLSLD16_HA: | |
9579 | case R_PPC64_GOT_TLSGD16_HA: | |
9580 | case R_PPC64_GOT_TPREL16_HA: | |
9581 | case R_PPC64_GOT_DTPREL16_HA: | |
9582 | case R_PPC64_GOT16_HA: | |
9583 | case R_PPC64_TOC16_HA: | |
9584 | insn_check = check_ha; | |
9585 | break; | |
9586 | ||
9587 | case R_PPC64_PLT16_LO: | |
9588 | case R_PPC64_PLT16_LO_DS: | |
9589 | case R_PPC64_GOT_TLSLD16_LO: | |
9590 | case R_PPC64_GOT_TLSGD16_LO: | |
9591 | case R_PPC64_GOT_TPREL16_LO_DS: | |
9592 | case R_PPC64_GOT_DTPREL16_LO_DS: | |
9593 | case R_PPC64_GOT16_LO: | |
9594 | case R_PPC64_GOT16_LO_DS: | |
9595 | case R_PPC64_TOC16_LO: | |
9596 | case R_PPC64_TOC16_LO_DS: | |
9597 | insn_check = check_lo; | |
9598 | break; | |
9599 | } | |
9600 | ||
9601 | if (insn_check != no_check) | |
9602 | { | |
9603 | bfd_vma off = rel->r_offset & ~3; | |
9604 | ||
9605 | if (!bfd_get_section_contents (ibfd, sec, buf, off, 4)) | |
9606 | goto got_error_ret; | |
9607 | ||
9608 | insn = bfd_get_32 (ibfd, buf); | |
9609 | if (insn_check == check_lo | |
9610 | ? !ok_lo_toc_insn (insn, r_type) | |
2365f8d7 | 9611 | : ((insn & ((0x3fu << 26) | 0x1f << 16)) |
903b777d AM |
9612 | != ((15u << 26) | (2 << 16)) /* addis rt,2,imm */)) |
9613 | { | |
9614 | char str[12]; | |
9615 | ||
9616 | ppc64_elf_tdata (ibfd)->unexpected_toc_insn = 1; | |
9617 | sprintf (str, "%#08x", insn); | |
9618 | info->callbacks->einfo | |
9619 | /* xgettext:c-format */ | |
9620 | (_("%H: got/toc optimization is not supported for" | |
9621 | " %s instruction\n"), | |
9622 | ibfd, sec, rel->r_offset & ~3, str); | |
9623 | continue; | |
9624 | } | |
9625 | } | |
9626 | ||
066f4018 AM |
9627 | switch (r_type) |
9628 | { | |
bb22a418 AM |
9629 | /* Note that we don't delete GOT entries for |
9630 | R_PPC64_GOT16_DS since we'd need a lot more | |
9631 | analysis. For starters, the preliminary layout is | |
9632 | before the GOT, PLT, dynamic sections and stubs are | |
9633 | laid out. Then we'd need to allow for changes in | |
9634 | distance between sections caused by alignment. */ | |
066f4018 AM |
9635 | default: |
9636 | continue; | |
9637 | ||
066f4018 AM |
9638 | case R_PPC64_GOT16_HA: |
9639 | case R_PPC64_GOT16_LO_DS: | |
4a421c53 | 9640 | case R_PPC64_GOT_PCREL34: |
066f4018 AM |
9641 | break; |
9642 | } | |
9643 | ||
9644 | r_symndx = ELF64_R_SYM (rel->r_info); | |
9645 | if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, | |
9646 | r_symndx, ibfd)) | |
9647 | goto got_error_ret; | |
9648 | ||
6d5554a6 AM |
9649 | if (sym_sec == NULL |
9650 | || sym_sec->output_section == NULL | |
9651 | || discarded_section (sym_sec)) | |
9652 | continue; | |
9653 | ||
06507dab AM |
9654 | if ((h ? h->type : ELF_ST_TYPE (sym->st_info)) == STT_GNU_IFUNC) |
9655 | continue; | |
9656 | ||
3a3a4c1f AM |
9657 | if (!SYMBOL_REFERENCES_LOCAL (info, h) |
9658 | || (bfd_link_pic (info) | |
9659 | && sym_sec == bfd_abs_section_ptr)) | |
066f4018 AM |
9660 | continue; |
9661 | ||
9662 | if (h != NULL) | |
9663 | val = h->root.u.def.value; | |
9664 | else | |
9665 | val = sym->st_value; | |
133a1f60 | 9666 | val += rel->r_addend; |
066f4018 AM |
9667 | val += sym_sec->output_section->vma + sym_sec->output_offset; |
9668 | ||
bb22a418 AM |
9669 | /* Fudge factor to allow for the fact that the preliminary layout |
9670 | isn't exact. Reduce limits by this factor. */ | |
9671 | #define LIMIT_ADJUST(LIMIT) ((LIMIT) - (LIMIT) / 16) | |
9672 | ||
066f4018 AM |
9673 | switch (r_type) |
9674 | { | |
9675 | default: | |
9676 | continue; | |
9677 | ||
066f4018 | 9678 | case R_PPC64_GOT16_HA: |
bb22a418 AM |
9679 | if (val - got + LIMIT_ADJUST (0x80008000ULL) |
9680 | >= LIMIT_ADJUST (0x100000000ULL)) | |
066f4018 AM |
9681 | continue; |
9682 | ||
9683 | if (!bfd_get_section_contents (ibfd, sec, buf, | |
9684 | rel->r_offset & ~3, 4)) | |
9685 | goto got_error_ret; | |
9686 | insn = bfd_get_32 (ibfd, buf); | |
2365f8d7 | 9687 | if (((insn & ((0x3fu << 26) | 0x1f << 16)) |
066f4018 AM |
9688 | != ((15u << 26) | (2 << 16)) /* addis rt,2,imm */)) |
9689 | continue; | |
9690 | break; | |
9691 | ||
9692 | case R_PPC64_GOT16_LO_DS: | |
bb22a418 AM |
9693 | if (val - got + LIMIT_ADJUST (0x80008000ULL) |
9694 | >= LIMIT_ADJUST (0x100000000ULL)) | |
066f4018 AM |
9695 | continue; |
9696 | if (!bfd_get_section_contents (ibfd, sec, buf, | |
9697 | rel->r_offset & ~3, 4)) | |
9698 | goto got_error_ret; | |
9699 | insn = bfd_get_32 (ibfd, buf); | |
2365f8d7 | 9700 | if ((insn & (0x3fu << 26 | 0x3)) != 58u << 26 /* ld */) |
066f4018 AM |
9701 | continue; |
9702 | break; | |
4a421c53 AM |
9703 | |
9704 | case R_PPC64_GOT_PCREL34: | |
9705 | pc = rel->r_offset; | |
9706 | pc += sec->output_section->vma + sec->output_offset; | |
bb22a418 AM |
9707 | if (val - pc + LIMIT_ADJUST (1ULL << 33) |
9708 | >= LIMIT_ADJUST (1ULL << 34)) | |
4a421c53 AM |
9709 | continue; |
9710 | if (!bfd_get_section_contents (ibfd, sec, buf, | |
9711 | rel->r_offset & ~3, 8)) | |
9712 | goto got_error_ret; | |
9713 | insn = bfd_get_32 (ibfd, buf); | |
9714 | if ((insn & (-1u << 18)) != ((1u << 26) | (1u << 20))) | |
9715 | continue; | |
9716 | insn = bfd_get_32 (ibfd, buf + 4); | |
2365f8d7 | 9717 | if ((insn & (0x3fu << 26)) != 57u << 26) |
4a421c53 AM |
9718 | continue; |
9719 | break; | |
066f4018 | 9720 | } |
bb22a418 | 9721 | #undef LIMIT_ADJUST |
066f4018 AM |
9722 | |
9723 | if (h != NULL) | |
9724 | ent = h->got.glist; | |
9725 | else | |
9726 | { | |
9727 | struct got_entry **local_got_ents = elf_local_got_ents (ibfd); | |
9728 | ent = local_got_ents[r_symndx]; | |
9729 | } | |
9730 | for (; ent != NULL; ent = ent->next) | |
133a1f60 | 9731 | if (ent->addend == rel->r_addend |
066f4018 AM |
9732 | && ent->owner == ibfd |
9733 | && ent->tls_type == 0) | |
9734 | break; | |
9735 | BFD_ASSERT (ent && ent->got.refcount > 0); | |
9736 | ent->got.refcount -= 1; | |
9737 | } | |
9738 | ||
9739 | if (elf_section_data (sec)->relocs != relstart) | |
9740 | free (relstart); | |
9741 | } | |
9742 | ||
9743 | if (local_syms != NULL | |
9744 | && symtab_hdr->contents != (unsigned char *) local_syms) | |
9745 | { | |
9746 | if (!info->keep_memory) | |
9747 | free (local_syms); | |
9748 | else | |
9749 | symtab_hdr->contents = (unsigned char *) local_syms; | |
9750 | } | |
9751 | } | |
9752 | ||
0a1b45a2 | 9753 | return true; |
c5614fa4 AM |
9754 | } |
9755 | ||
1bbe0902 AM |
9756 | /* Return true iff input section I references the TOC using |
9757 | instructions limited to +/-32k offsets. */ | |
9758 | ||
0a1b45a2 | 9759 | bool |
1bbe0902 AM |
9760 | ppc64_elf_has_small_toc_reloc (asection *i) |
9761 | { | |
9762 | return (is_ppc64_elf (i->owner) | |
9763 | && ppc64_elf_tdata (i->owner)->has_small_toc_reloc); | |
9764 | } | |
9765 | ||
927be08e AM |
9766 | /* Allocate space for one GOT entry. */ |
9767 | ||
9768 | static void | |
9769 | allocate_got (struct elf_link_hash_entry *h, | |
9770 | struct bfd_link_info *info, | |
9771 | struct got_entry *gent) | |
9772 | { | |
9773 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
ed7007c1 | 9774 | struct ppc_link_hash_entry *eh = ppc_elf_hash_entry (h); |
927be08e AM |
9775 | int entsize = (gent->tls_type & eh->tls_mask & (TLS_GD | TLS_LD) |
9776 | ? 16 : 8); | |
9777 | int rentsize = (gent->tls_type & eh->tls_mask & TLS_GD | |
9778 | ? 2 : 1) * sizeof (Elf64_External_Rela); | |
9779 | asection *got = ppc64_elf_tdata (gent->owner)->got; | |
9780 | ||
9781 | gent->got.offset = got->size; | |
9782 | got->size += entsize; | |
9783 | ||
19e08130 | 9784 | if (h->type == STT_GNU_IFUNC) |
927be08e | 9785 | { |
33e44f2e | 9786 | htab->elf.irelplt->size += rentsize; |
19e08130 | 9787 | htab->got_reli_size += rentsize; |
927be08e | 9788 | } |
f15d0b54 | 9789 | else if (((bfd_link_pic (info) |
1657026c AM |
9790 | && (gent->tls_type == 0 |
9791 | ? !info->enable_dt_relr | |
9792 | : !(bfd_link_executable (info) | |
3a3a4c1f AM |
9793 | && SYMBOL_REFERENCES_LOCAL (info, h))) |
9794 | && !bfd_is_abs_symbol (&h->root)) | |
f0158f44 AM |
9795 | || (htab->elf.dynamic_sections_created |
9796 | && h->dynindx != -1 | |
9797 | && !SYMBOL_REFERENCES_LOCAL (info, h))) | |
21d68fcd | 9798 | && !UNDEFWEAK_NO_DYNAMIC_RELOC (info, h)) |
927be08e | 9799 | { |
19e08130 | 9800 | asection *relgot = ppc64_elf_tdata (gent->owner)->relgot; |
927be08e | 9801 | relgot->size += rentsize; |
927be08e AM |
9802 | } |
9803 | } | |
9804 | ||
7865406b AM |
9805 | /* This function merges got entries in the same toc group. */ |
9806 | ||
9807 | static void | |
9808 | merge_got_entries (struct got_entry **pent) | |
9809 | { | |
9810 | struct got_entry *ent, *ent2; | |
9811 | ||
9812 | for (ent = *pent; ent != NULL; ent = ent->next) | |
9813 | if (!ent->is_indirect) | |
9814 | for (ent2 = ent->next; ent2 != NULL; ent2 = ent2->next) | |
9815 | if (!ent2->is_indirect | |
9816 | && ent2->addend == ent->addend | |
9817 | && ent2->tls_type == ent->tls_type | |
9818 | && elf_gp (ent2->owner) == elf_gp (ent->owner)) | |
9819 | { | |
0a1b45a2 | 9820 | ent2->is_indirect = true; |
7865406b AM |
9821 | ent2->got.ent = ent; |
9822 | } | |
9823 | } | |
9824 | ||
46434633 | 9825 | /* If H is undefined, make it dynamic if that makes sense. */ |
f0158f44 | 9826 | |
0a1b45a2 | 9827 | static bool |
46434633 AM |
9828 | ensure_undef_dynamic (struct bfd_link_info *info, |
9829 | struct elf_link_hash_entry *h) | |
f0158f44 AM |
9830 | { |
9831 | struct elf_link_hash_table *htab = elf_hash_table (info); | |
9832 | ||
9833 | if (htab->dynamic_sections_created | |
46434633 AM |
9834 | && ((info->dynamic_undefined_weak != 0 |
9835 | && h->root.type == bfd_link_hash_undefweak) | |
9836 | || h->root.type == bfd_link_hash_undefined) | |
f0158f44 AM |
9837 | && h->dynindx == -1 |
9838 | && !h->forced_local | |
9839 | && ELF_ST_VISIBILITY (h->other) == STV_DEFAULT) | |
9840 | return bfd_elf_link_record_dynamic_symbol (info, h); | |
0a1b45a2 | 9841 | return true; |
f0158f44 AM |
9842 | } |
9843 | ||
30845f11 AM |
9844 | /* Choose whether to use htab->iplt or htab->pltlocal rather than the |
9845 | usual htab->elf.splt section for a PLT entry. */ | |
9846 | ||
9847 | static inline | |
0a1b45a2 | 9848 | bool use_local_plt (struct bfd_link_info *info, |
30845f11 AM |
9849 | struct elf_link_hash_entry *h) |
9850 | { | |
9851 | return (h == NULL | |
9852 | || h->dynindx == -1 | |
9853 | || !elf_hash_table (info)->dynamic_sections_created); | |
9854 | } | |
9855 | ||
65f38f15 AM |
9856 | /* Allocate space in .plt, .got and associated reloc sections for |
9857 | dynamic relocs. */ | |
5bd4f169 | 9858 | |
0a1b45a2 | 9859 | static bool |
4ce794b7 | 9860 | allocate_dynrelocs (struct elf_link_hash_entry *h, void *inf) |
5bd4f169 | 9861 | { |
65f38f15 AM |
9862 | struct bfd_link_info *info; |
9863 | struct ppc_link_hash_table *htab; | |
5bd4f169 | 9864 | asection *s; |
65f38f15 | 9865 | struct ppc_link_hash_entry *eh; |
0b8bcf0d | 9866 | struct got_entry **pgent, *gent; |
5bd4f169 | 9867 | |
e92d460e | 9868 | if (h->root.type == bfd_link_hash_indirect) |
0a1b45a2 | 9869 | return true; |
5bd4f169 | 9870 | |
65f38f15 AM |
9871 | info = (struct bfd_link_info *) inf; |
9872 | htab = ppc_hash_table (info); | |
4dfe6ac6 | 9873 | if (htab == NULL) |
0a1b45a2 | 9874 | return false; |
5bd4f169 | 9875 | |
ed7007c1 | 9876 | eh = ppc_elf_hash_entry (h); |
951fd09b AM |
9877 | /* Run through the TLS GD got entries first if we're changing them |
9878 | to TPREL. */ | |
b00a0a86 | 9879 | if ((eh->tls_mask & (TLS_TLS | TLS_GDIE)) == (TLS_TLS | TLS_GDIE)) |
951fd09b AM |
9880 | for (gent = h->got.glist; gent != NULL; gent = gent->next) |
9881 | if (gent->got.refcount > 0 | |
9882 | && (gent->tls_type & TLS_GD) != 0) | |
9883 | { | |
9884 | /* This was a GD entry that has been converted to TPREL. If | |
9885 | there happens to be a TPREL entry we can use that one. */ | |
9886 | struct got_entry *ent; | |
9887 | for (ent = h->got.glist; ent != NULL; ent = ent->next) | |
9888 | if (ent->got.refcount > 0 | |
9889 | && (ent->tls_type & TLS_TPREL) != 0 | |
e717da7e AM |
9890 | && ent->addend == gent->addend |
9891 | && ent->owner == gent->owner) | |
951fd09b AM |
9892 | { |
9893 | gent->got.refcount = 0; | |
9894 | break; | |
9895 | } | |
9896 | ||
9897 | /* If not, then we'll be using our own TPREL entry. */ | |
9898 | if (gent->got.refcount != 0) | |
9899 | gent->tls_type = TLS_TLS | TLS_TPREL; | |
9900 | } | |
9901 | ||
7865406b AM |
9902 | /* Remove any list entry that won't generate a word in the GOT before |
9903 | we call merge_got_entries. Otherwise we risk merging to empty | |
9904 | entries. */ | |
0b8bcf0d AM |
9905 | pgent = &h->got.glist; |
9906 | while ((gent = *pgent) != NULL) | |
411e1bfb | 9907 | if (gent->got.refcount > 0) |
7865406b AM |
9908 | { |
9909 | if ((gent->tls_type & TLS_LD) != 0 | |
f749f26e | 9910 | && SYMBOL_REFERENCES_LOCAL (info, h)) |
7865406b AM |
9911 | { |
9912 | ppc64_tlsld_got (gent->owner)->got.refcount += 1; | |
9913 | *pgent = gent->next; | |
9914 | } | |
9915 | else | |
9916 | pgent = &gent->next; | |
9917 | } | |
9918 | else | |
9919 | *pgent = gent->next; | |
9920 | ||
9921 | if (!htab->do_multi_toc) | |
9922 | merge_got_entries (&h->got.glist); | |
9923 | ||
9924 | for (gent = h->got.glist; gent != NULL; gent = gent->next) | |
9925 | if (!gent->is_indirect) | |
411e1bfb | 9926 | { |
ec73ddcd AM |
9927 | /* Ensure we catch all the cases where this symbol should |
9928 | be made dynamic. */ | |
46434633 | 9929 | if (!ensure_undef_dynamic (info, h)) |
0a1b45a2 | 9930 | return false; |
65f38f15 | 9931 | |
0c8d6e5c | 9932 | if (!is_ppc64_elf (gent->owner)) |
927be08e | 9933 | abort (); |
0ffa91dd | 9934 | |
927be08e | 9935 | allocate_got (h, info, gent); |
411e1bfb | 9936 | } |
65f38f15 | 9937 | |
954b63d4 AM |
9938 | /* If no dynamic sections we can't have dynamic relocs, except for |
9939 | IFUNCs which are handled even in static executables. */ | |
8a2058b5 AM |
9940 | if (!htab->elf.dynamic_sections_created |
9941 | && h->type != STT_GNU_IFUNC) | |
190eb1dd | 9942 | h->dyn_relocs = NULL; |
8a2058b5 | 9943 | |
529fe20e AM |
9944 | /* Discard relocs on undefined symbols that must be local. */ |
9945 | else if (h->root.type == bfd_link_hash_undefined | |
9946 | && ELF_ST_VISIBILITY (h->other) != STV_DEFAULT) | |
190eb1dd | 9947 | h->dyn_relocs = NULL; |
529fe20e | 9948 | |
954b63d4 AM |
9949 | /* Also discard relocs on undefined weak syms with non-default |
9950 | visibility, or when dynamic_undefined_weak says so. */ | |
21d68fcd | 9951 | else if (UNDEFWEAK_NO_DYNAMIC_RELOC (info, h)) |
190eb1dd | 9952 | h->dyn_relocs = NULL; |
954b63d4 | 9953 | |
190eb1dd | 9954 | if (h->dyn_relocs != NULL) |
65f38f15 | 9955 | { |
1657026c | 9956 | struct ppc_dyn_relocs *p, **pp; |
8a2058b5 | 9957 | |
57e7d118 AM |
9958 | /* In the shared -Bsymbolic case, discard space allocated for |
9959 | dynamic pc-relative relocs against symbols which turn out to | |
9960 | be defined in regular objects. For the normal shared case, | |
9961 | discard space for relocs that have become local due to symbol | |
9962 | visibility changes. */ | |
57e7d118 | 9963 | if (bfd_link_pic (info)) |
65f38f15 | 9964 | { |
57e7d118 AM |
9965 | /* Relocs that use pc_count are those that appear on a call |
9966 | insn, or certain REL relocs (see must_be_dyn_reloc) that | |
9967 | can be generated via assembly. We want calls to | |
9968 | protected symbols to resolve directly to the function | |
9969 | rather than going via the plt. If people want function | |
9970 | pointer comparisons to work as expected then they should | |
9971 | avoid writing weird assembly. */ | |
9972 | if (SYMBOL_CALLS_LOCAL (info, h)) | |
9973 | { | |
1657026c AM |
9974 | for (pp = (struct ppc_dyn_relocs **) &h->dyn_relocs; |
9975 | (p = *pp) != NULL; | |
9976 | ) | |
57e7d118 AM |
9977 | { |
9978 | p->count -= p->pc_count; | |
9979 | p->pc_count = 0; | |
9980 | if (p->count == 0) | |
9981 | *pp = p->next; | |
9982 | else | |
9983 | pp = &p->next; | |
9984 | } | |
9985 | } | |
65f38f15 | 9986 | |
190eb1dd | 9987 | if (h->dyn_relocs != NULL) |
5bd4f169 | 9988 | { |
ec73ddcd AM |
9989 | /* Ensure we catch all the cases where this symbol |
9990 | should be made dynamic. */ | |
46434633 | 9991 | if (!ensure_undef_dynamic (info, h)) |
0a1b45a2 | 9992 | return false; |
5bd4f169 | 9993 | } |
65f38f15 | 9994 | } |
ec73ddcd AM |
9995 | |
9996 | /* For a fixed position executable, discard space for | |
9997 | relocs against symbols which are not dynamic. */ | |
9998 | else if (h->type != STT_GNU_IFUNC) | |
57e7d118 | 9999 | { |
49160308 AM |
10000 | if ((h->dynamic_adjusted |
10001 | || (h->ref_regular | |
10002 | && h->root.type == bfd_link_hash_undefweak | |
10003 | && (info->dynamic_undefined_weak > 0 | |
10004 | || !_bfd_elf_readonly_dynrelocs (h)))) | |
529fe20e AM |
10005 | && !h->def_regular |
10006 | && !ELF_COMMON_DEF_P (h)) | |
f0158f44 | 10007 | { |
ec73ddcd AM |
10008 | /* Ensure we catch all the cases where this symbol |
10009 | should be made dynamic. */ | |
46434633 | 10010 | if (!ensure_undef_dynamic (info, h)) |
0a1b45a2 | 10011 | return false; |
dfbb6ac9 | 10012 | |
ec73ddcd | 10013 | /* But if that didn't work out, discard dynamic relocs. */ |
f0158f44 | 10014 | if (h->dynindx == -1) |
190eb1dd | 10015 | h->dyn_relocs = NULL; |
f0158f44 AM |
10016 | } |
10017 | else | |
190eb1dd | 10018 | h->dyn_relocs = NULL; |
57e7d118 AM |
10019 | } |
10020 | ||
10021 | /* Finally, allocate space. */ | |
1657026c | 10022 | for (p = (struct ppc_dyn_relocs *) h->dyn_relocs; p != NULL; p = p->next) |
365bf300 AM |
10023 | if (!discarded_section (p->sec)) |
10024 | { | |
10025 | unsigned int count; | |
10026 | asection *sreloc = elf_section_data (p->sec)->sreloc; | |
10027 | if (eh->elf.type == STT_GNU_IFUNC) | |
10028 | sreloc = htab->elf.irelplt; | |
10029 | count = p->count; | |
10030 | if (info->enable_dt_relr | |
10031 | && ((!NO_OPD_RELOCS | |
10032 | && ppc64_elf_section_data (p->sec)->sec_type == sec_opd) | |
10033 | || (eh->elf.type != STT_GNU_IFUNC | |
10034 | && SYMBOL_REFERENCES_LOCAL (info, h)))) | |
10035 | count -= p->rel_count; | |
10036 | sreloc->size += count * sizeof (Elf64_External_Rela); | |
10037 | } | |
65f38f15 | 10038 | } |
57e7d118 | 10039 | |
2d7ad24e AM |
10040 | /* We might need a PLT entry when the symbol |
10041 | a) is dynamic, or | |
10042 | b) is an ifunc, or | |
10043 | c) has plt16 relocs and has been processed by adjust_dynamic_symbol, or | |
10044 | d) has plt16 relocs and we are linking statically. */ | |
10045 | if ((htab->elf.dynamic_sections_created && h->dynindx != -1) | |
10046 | || h->type == STT_GNU_IFUNC | |
10047 | || (h->needs_plt && h->dynamic_adjusted) | |
10048 | || (h->needs_plt | |
10049 | && h->def_regular | |
10050 | && !htab->elf.dynamic_sections_created | |
3e04d765 | 10051 | && !htab->can_convert_all_inline_plt |
ed7007c1 | 10052 | && (ppc_elf_hash_entry (h)->tls_mask |
2d7ad24e | 10053 | & (TLS_TLS | PLT_KEEP)) == PLT_KEEP)) |
65f38f15 | 10054 | { |
57e7d118 | 10055 | struct plt_entry *pent; |
0a1b45a2 | 10056 | bool doneone = false; |
57e7d118 AM |
10057 | for (pent = h->plt.plist; pent != NULL; pent = pent->next) |
10058 | if (pent->plt.refcount > 0) | |
10059 | { | |
b2936612 AM |
10060 | if (!ensure_undef_dynamic (info, h)) |
10061 | return false; | |
10062 | ||
30845f11 | 10063 | if (use_local_plt (info, h)) |
57e7d118 | 10064 | { |
2d7ad24e AM |
10065 | if (h->type == STT_GNU_IFUNC) |
10066 | { | |
10067 | s = htab->elf.iplt; | |
10068 | pent->plt.offset = s->size; | |
10069 | s->size += PLT_ENTRY_SIZE (htab); | |
10070 | s = htab->elf.irelplt; | |
10071 | } | |
10072 | else | |
10073 | { | |
10074 | s = htab->pltlocal; | |
10075 | pent->plt.offset = s->size; | |
10076 | s->size += LOCAL_PLT_ENTRY_SIZE (htab); | |
1657026c AM |
10077 | s = NULL; |
10078 | if (bfd_link_pic (info) | |
10079 | && !(info->enable_dt_relr && !htab->opd_abi)) | |
10080 | s = htab->relpltlocal; | |
2d7ad24e | 10081 | } |
57e7d118 AM |
10082 | } |
10083 | else | |
10084 | { | |
10085 | /* If this is the first .plt entry, make room for the special | |
10086 | first entry. */ | |
10087 | s = htab->elf.splt; | |
10088 | if (s->size == 0) | |
10089 | s->size += PLT_INITIAL_ENTRY_SIZE (htab); | |
65f38f15 | 10090 | |
57e7d118 | 10091 | pent->plt.offset = s->size; |
65f38f15 | 10092 | |
57e7d118 AM |
10093 | /* Make room for this entry. */ |
10094 | s->size += PLT_ENTRY_SIZE (htab); | |
65f38f15 | 10095 | |
57e7d118 AM |
10096 | /* Make room for the .glink code. */ |
10097 | s = htab->glink; | |
10098 | if (s->size == 0) | |
9e390558 | 10099 | s->size += GLINK_PLTRESOLVE_SIZE (htab); |
57e7d118 AM |
10100 | if (htab->opd_abi) |
10101 | { | |
10102 | /* We need bigger stubs past index 32767. */ | |
9e390558 | 10103 | if (s->size >= GLINK_PLTRESOLVE_SIZE (htab) + 32768*2*4) |
57e7d118 AM |
10104 | s->size += 4; |
10105 | s->size += 2*4; | |
10106 | } | |
10107 | else | |
10108 | s->size += 4; | |
65f38f15 | 10109 | |
57e7d118 AM |
10110 | /* We also need to make an entry in the .rela.plt section. */ |
10111 | s = htab->elf.srelplt; | |
10112 | } | |
2d7ad24e AM |
10113 | if (s != NULL) |
10114 | s->size += sizeof (Elf64_External_Rela); | |
0a1b45a2 | 10115 | doneone = true; |
57e7d118 AM |
10116 | } |
10117 | else | |
10118 | pent->plt.offset = (bfd_vma) -1; | |
10119 | if (!doneone) | |
10120 | { | |
10121 | h->plt.plist = NULL; | |
10122 | h->needs_plt = 0; | |
10123 | } | |
65f38f15 | 10124 | } |
57e7d118 | 10125 | else |
65f38f15 | 10126 | { |
57e7d118 AM |
10127 | h->plt.plist = NULL; |
10128 | h->needs_plt = 0; | |
65f38f15 AM |
10129 | } |
10130 | ||
0a1b45a2 | 10131 | return true; |
65f38f15 AM |
10132 | } |
10133 | ||
9e390558 AM |
10134 | #define PPC_LO(v) ((v) & 0xffff) |
10135 | #define PPC_HI(v) (((v) >> 16) & 0xffff) | |
10136 | #define PPC_HA(v) PPC_HI ((v) + 0x8000) | |
04bdff6a AM |
10137 | #define D34(v) \ |
10138 | ((((v) & 0x3ffff0000ULL) << 16) | (v & 0xffff)) | |
10139 | #define HA34(v) ((v + (1ULL << 33)) >> 34) | |
9e390558 | 10140 | |
a345bc8d AM |
10141 | /* Called via elf_link_hash_traverse from ppc64_elf_size_dynamic_sections |
10142 | to set up space for global entry stubs. These are put in glink, | |
10143 | after the branch table. */ | |
65f38f15 | 10144 | |
0a1b45a2 | 10145 | static bool |
a345bc8d | 10146 | size_global_entry_stubs (struct elf_link_hash_entry *h, void *inf) |
65f38f15 | 10147 | { |
a345bc8d AM |
10148 | struct bfd_link_info *info; |
10149 | struct ppc_link_hash_table *htab; | |
10150 | struct plt_entry *pent; | |
9e390558 | 10151 | asection *s, *plt; |
65f38f15 | 10152 | |
a345bc8d | 10153 | if (h->root.type == bfd_link_hash_indirect) |
0a1b45a2 | 10154 | return true; |
65f38f15 | 10155 | |
a345bc8d | 10156 | if (!h->pointer_equality_needed) |
0a1b45a2 | 10157 | return true; |
65f38f15 | 10158 | |
a345bc8d | 10159 | if (h->def_regular) |
0a1b45a2 | 10160 | return true; |
65f38f15 | 10161 | |
a345bc8d AM |
10162 | info = inf; |
10163 | htab = ppc_hash_table (info); | |
10164 | if (htab == NULL) | |
0a1b45a2 | 10165 | return false; |
a345bc8d | 10166 | |
9e390558 AM |
10167 | s = htab->global_entry; |
10168 | plt = htab->elf.splt; | |
a345bc8d AM |
10169 | for (pent = h->plt.plist; pent != NULL; pent = pent->next) |
10170 | if (pent->plt.offset != (bfd_vma) -1 | |
10171 | && pent->addend == 0) | |
10172 | { | |
afe397ea AM |
10173 | /* For ELFv2, if this symbol is not defined in a regular file |
10174 | and we are not generating a shared library or pie, then we | |
10175 | need to define the symbol in the executable on a call stub. | |
10176 | This is to avoid text relocations. */ | |
9e390558 AM |
10177 | bfd_vma off, stub_align, stub_off, stub_size; |
10178 | unsigned int align_power; | |
10179 | ||
10180 | stub_size = 16; | |
10181 | stub_off = s->size; | |
10182 | if (htab->params->plt_stub_align >= 0) | |
10183 | align_power = htab->params->plt_stub_align; | |
10184 | else | |
10185 | align_power = -htab->params->plt_stub_align; | |
10186 | /* Setting section alignment is delayed until we know it is | |
10187 | non-empty. Otherwise the .text output section will be | |
10188 | aligned at least to plt_stub_align even when no global | |
10189 | entry stubs are needed. */ | |
10190 | if (s->alignment_power < align_power) | |
10191 | s->alignment_power = align_power; | |
10192 | stub_align = (bfd_vma) 1 << align_power; | |
10193 | if (htab->params->plt_stub_align >= 0 | |
10194 | || ((((stub_off + stub_size - 1) & -stub_align) | |
10195 | - (stub_off & -stub_align)) | |
10196 | > ((stub_size - 1) & -stub_align))) | |
10197 | stub_off = (stub_off + stub_align - 1) & -stub_align; | |
10198 | off = pent->plt.offset + plt->output_offset + plt->output_section->vma; | |
10199 | off -= stub_off + s->output_offset + s->output_section->vma; | |
10200 | /* Note that for --plt-stub-align negative we have a possible | |
10201 | dependency between stub offset and size. Break that | |
10202 | dependency by assuming the max stub size when calculating | |
10203 | the stub offset. */ | |
10204 | if (PPC_HA (off) == 0) | |
10205 | stub_size -= 4; | |
8a2058b5 | 10206 | h->root.type = bfd_link_hash_defined; |
afe397ea | 10207 | h->root.u.def.section = s; |
9e390558 AM |
10208 | h->root.u.def.value = stub_off; |
10209 | s->size = stub_off + stub_size; | |
a345bc8d AM |
10210 | break; |
10211 | } | |
0a1b45a2 | 10212 | return true; |
a345bc8d AM |
10213 | } |
10214 | ||
65f38f15 AM |
10215 | /* Set the sizes of the dynamic sections. */ |
10216 | ||
0a1b45a2 | 10217 | static bool |
ee67d69a | 10218 | ppc64_elf_size_dynamic_sections (bfd *output_bfd, |
4ce794b7 | 10219 | struct bfd_link_info *info) |
65f38f15 AM |
10220 | { |
10221 | struct ppc_link_hash_table *htab; | |
10222 | bfd *dynobj; | |
10223 | asection *s; | |
0a1b45a2 | 10224 | bool relocs; |
65f38f15 | 10225 | bfd *ibfd; |
7865406b | 10226 | struct got_entry *first_tlsld; |
65f38f15 AM |
10227 | |
10228 | htab = ppc_hash_table (info); | |
4dfe6ac6 | 10229 | if (htab == NULL) |
0a1b45a2 | 10230 | return false; |
4dfe6ac6 | 10231 | |
65f38f15 AM |
10232 | dynobj = htab->elf.dynobj; |
10233 | if (dynobj == NULL) | |
10234 | abort (); | |
10235 | ||
10236 | if (htab->elf.dynamic_sections_created) | |
10237 | { | |
10238 | /* Set the contents of the .interp section to the interpreter. */ | |
9b8b325a | 10239 | if (bfd_link_executable (info) && !info->nointerp) |
65f38f15 | 10240 | { |
3d4d4302 | 10241 | s = bfd_get_linker_section (dynobj, ".interp"); |
65f38f15 AM |
10242 | if (s == NULL) |
10243 | abort (); | |
eea6121a | 10244 | s->size = sizeof ELF_DYNAMIC_INTERPRETER; |
65f38f15 AM |
10245 | s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER; |
10246 | } | |
10247 | } | |
10248 | ||
10249 | /* Set up .got offsets for local syms, and space for local dynamic | |
10250 | relocs. */ | |
c72f2fb2 | 10251 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next) |
65f38f15 | 10252 | { |
411e1bfb AM |
10253 | struct got_entry **lgot_ents; |
10254 | struct got_entry **end_lgot_ents; | |
e054468f AM |
10255 | struct plt_entry **local_plt; |
10256 | struct plt_entry **end_local_plt; | |
f961d9dd | 10257 | unsigned char *lgot_masks; |
65f38f15 AM |
10258 | bfd_size_type locsymcount; |
10259 | Elf_Internal_Shdr *symtab_hdr; | |
3a3a4c1f AM |
10260 | Elf_Internal_Sym *local_syms; |
10261 | Elf_Internal_Sym *isym; | |
65f38f15 | 10262 | |
0c8d6e5c | 10263 | if (!is_ppc64_elf (ibfd)) |
65f38f15 AM |
10264 | continue; |
10265 | ||
10266 | for (s = ibfd->sections; s != NULL; s = s->next) | |
10267 | { | |
1657026c | 10268 | struct ppc_local_dyn_relocs *p; |
65f38f15 | 10269 | |
6edfbbad | 10270 | for (p = elf_section_data (s)->local_dynrel; p != NULL; p = p->next) |
65f38f15 | 10271 | { |
365bf300 | 10272 | if (discarded_section (p->sec)) |
ec338859 AM |
10273 | { |
10274 | /* Input section has been discarded, either because | |
10275 | it is a copy of a linkonce section or due to | |
10276 | linker script /DISCARD/, so we'll be discarding | |
10277 | the relocs too. */ | |
10278 | } | |
248866a8 | 10279 | else if (p->count != 0) |
ec338859 | 10280 | { |
1657026c AM |
10281 | unsigned int count; |
10282 | asection *srel; | |
10283 | ||
10284 | count = p->count; | |
8ffb6df2 AM |
10285 | if (info->enable_dt_relr |
10286 | && ((!NO_OPD_RELOCS | |
10287 | && (ppc64_elf_section_data (p->sec)->sec_type | |
10288 | == sec_opd)) | |
10289 | || !p->ifunc)) | |
1657026c AM |
10290 | count -= p->rel_count; |
10291 | srel = elf_section_data (p->sec)->sreloc; | |
19e08130 | 10292 | if (p->ifunc) |
33e44f2e | 10293 | srel = htab->elf.irelplt; |
1657026c | 10294 | srel->size += count * sizeof (Elf64_External_Rela); |
248866a8 AM |
10295 | if ((p->sec->output_section->flags & SEC_READONLY) != 0) |
10296 | info->flags |= DF_TEXTREL; | |
ec338859 | 10297 | } |
65f38f15 AM |
10298 | } |
10299 | } | |
10300 | ||
411e1bfb AM |
10301 | lgot_ents = elf_local_got_ents (ibfd); |
10302 | if (!lgot_ents) | |
65f38f15 AM |
10303 | continue; |
10304 | ||
0ffa91dd | 10305 | symtab_hdr = &elf_symtab_hdr (ibfd); |
65f38f15 | 10306 | locsymcount = symtab_hdr->sh_info; |
411e1bfb | 10307 | end_lgot_ents = lgot_ents + locsymcount; |
e054468f AM |
10308 | local_plt = (struct plt_entry **) end_lgot_ents; |
10309 | end_local_plt = local_plt + locsymcount; | |
f961d9dd | 10310 | lgot_masks = (unsigned char *) end_local_plt; |
c9fecd62 AM |
10311 | local_syms = (Elf_Internal_Sym *) symtab_hdr->contents; |
10312 | if (local_syms == NULL && locsymcount != 0) | |
3a3a4c1f | 10313 | { |
c9fecd62 AM |
10314 | local_syms = bfd_elf_get_elf_syms (ibfd, symtab_hdr, locsymcount, |
10315 | 0, NULL, NULL, NULL); | |
10316 | if (local_syms == NULL) | |
10317 | return false; | |
3a3a4c1f | 10318 | } |
e717da7e | 10319 | s = ppc64_elf_tdata (ibfd)->got; |
3a3a4c1f AM |
10320 | for (isym = local_syms; |
10321 | lgot_ents < end_lgot_ents; | |
c9fecd62 | 10322 | ++lgot_ents, ++lgot_masks, isym++) |
65f38f15 | 10323 | { |
0b8bcf0d | 10324 | struct got_entry **pent, *ent; |
411e1bfb | 10325 | |
0b8bcf0d AM |
10326 | pent = lgot_ents; |
10327 | while ((ent = *pent) != NULL) | |
411e1bfb AM |
10328 | if (ent->got.refcount > 0) |
10329 | { | |
e7b938ca | 10330 | if ((ent->tls_type & *lgot_masks & TLS_LD) != 0) |
411e1bfb | 10331 | { |
927be08e | 10332 | ppc64_tlsld_got (ibfd)->got.refcount += 1; |
0b8bcf0d | 10333 | *pent = ent->next; |
411e1bfb AM |
10334 | } |
10335 | else | |
10336 | { | |
19e08130 AM |
10337 | unsigned int ent_size = 8; |
10338 | unsigned int rel_size = sizeof (Elf64_External_Rela); | |
10339 | ||
eea6121a | 10340 | ent->got.offset = s->size; |
e7b938ca | 10341 | if ((ent->tls_type & *lgot_masks & TLS_GD) != 0) |
927be08e | 10342 | { |
19e08130 AM |
10343 | ent_size *= 2; |
10344 | rel_size *= 2; | |
10345 | } | |
10346 | s->size += ent_size; | |
37da22e5 | 10347 | if ((*lgot_masks & (TLS_TLS | PLT_IFUNC)) == PLT_IFUNC) |
19e08130 | 10348 | { |
33e44f2e | 10349 | htab->elf.irelplt->size += rel_size; |
19e08130 AM |
10350 | htab->got_reli_size += rel_size; |
10351 | } | |
93370e8e | 10352 | else if (bfd_link_pic (info) |
8f22c953 AM |
10353 | && (ent->tls_type == 0 |
10354 | ? !info->enable_dt_relr | |
3a3a4c1f AM |
10355 | : !bfd_link_executable (info)) |
10356 | && isym->st_shndx != SHN_ABS) | |
19e08130 AM |
10357 | { |
10358 | asection *srel = ppc64_elf_tdata (ibfd)->relgot; | |
10359 | srel->size += rel_size; | |
927be08e | 10360 | } |
0b8bcf0d | 10361 | pent = &ent->next; |
411e1bfb AM |
10362 | } |
10363 | } | |
10364 | else | |
0b8bcf0d | 10365 | *pent = ent->next; |
65f38f15 | 10366 | } |
3a3a4c1f AM |
10367 | if (local_syms != NULL |
10368 | && symtab_hdr->contents != (unsigned char *) local_syms) | |
10369 | { | |
10370 | if (!info->keep_memory) | |
10371 | free (local_syms); | |
10372 | else | |
10373 | symtab_hdr->contents = (unsigned char *) local_syms; | |
10374 | } | |
e054468f | 10375 | |
2d7ad24e AM |
10376 | /* Allocate space for plt calls to local syms. */ |
10377 | lgot_masks = (unsigned char *) end_local_plt; | |
10378 | for (; local_plt < end_local_plt; ++local_plt, ++lgot_masks) | |
e054468f AM |
10379 | { |
10380 | struct plt_entry *ent; | |
10381 | ||
10382 | for (ent = *local_plt; ent != NULL; ent = ent->next) | |
10383 | if (ent->plt.refcount > 0) | |
10384 | { | |
2d7ad24e AM |
10385 | if ((*lgot_masks & (TLS_TLS | PLT_IFUNC)) == PLT_IFUNC) |
10386 | { | |
10387 | s = htab->elf.iplt; | |
10388 | ent->plt.offset = s->size; | |
10389 | s->size += PLT_ENTRY_SIZE (htab); | |
10390 | htab->elf.irelplt->size += sizeof (Elf64_External_Rela); | |
10391 | } | |
3e04d765 AM |
10392 | else if (htab->can_convert_all_inline_plt |
10393 | || (*lgot_masks & (TLS_TLS | PLT_KEEP)) != PLT_KEEP) | |
2d7ad24e AM |
10394 | ent->plt.offset = (bfd_vma) -1; |
10395 | else | |
10396 | { | |
10397 | s = htab->pltlocal; | |
10398 | ent->plt.offset = s->size; | |
10399 | s->size += LOCAL_PLT_ENTRY_SIZE (htab); | |
edca615a AM |
10400 | if (bfd_link_pic (info) |
10401 | && !(info->enable_dt_relr && !htab->opd_abi)) | |
2d7ad24e AM |
10402 | htab->relpltlocal->size += sizeof (Elf64_External_Rela); |
10403 | } | |
e054468f AM |
10404 | } |
10405 | else | |
10406 | ent->plt.offset = (bfd_vma) -1; | |
10407 | } | |
65f38f15 AM |
10408 | } |
10409 | ||
10410 | /* Allocate global sym .plt and .got entries, and space for global | |
10411 | sym dynamic relocs. */ | |
4ce794b7 | 10412 | elf_link_hash_traverse (&htab->elf, allocate_dynrelocs, info); |
a345bc8d | 10413 | |
0e1862bb | 10414 | if (!htab->opd_abi && !bfd_link_pic (info)) |
a345bc8d | 10415 | elf_link_hash_traverse (&htab->elf, size_global_entry_stubs, info); |
65f38f15 | 10416 | |
7865406b | 10417 | first_tlsld = NULL; |
c72f2fb2 | 10418 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next) |
102890f0 | 10419 | { |
7865406b AM |
10420 | struct got_entry *ent; |
10421 | ||
0c8d6e5c | 10422 | if (!is_ppc64_elf (ibfd)) |
102890f0 AM |
10423 | continue; |
10424 | ||
7865406b AM |
10425 | ent = ppc64_tlsld_got (ibfd); |
10426 | if (ent->got.refcount > 0) | |
102890f0 | 10427 | { |
7865406b | 10428 | if (!htab->do_multi_toc && first_tlsld != NULL) |
102890f0 | 10429 | { |
0a1b45a2 | 10430 | ent->is_indirect = true; |
7865406b AM |
10431 | ent->got.ent = first_tlsld; |
10432 | } | |
10433 | else | |
10434 | { | |
10435 | if (first_tlsld == NULL) | |
10436 | first_tlsld = ent; | |
10437 | s = ppc64_elf_tdata (ibfd)->got; | |
10438 | ent->got.offset = s->size; | |
10439 | ent->owner = ibfd; | |
10440 | s->size += 16; | |
f749f26e | 10441 | if (bfd_link_dll (info)) |
7865406b AM |
10442 | { |
10443 | asection *srel = ppc64_elf_tdata (ibfd)->relgot; | |
10444 | srel->size += sizeof (Elf64_External_Rela); | |
10445 | } | |
102890f0 AM |
10446 | } |
10447 | } | |
10448 | else | |
7865406b | 10449 | ent->got.offset = (bfd_vma) -1; |
102890f0 AM |
10450 | } |
10451 | ||
65f38f15 AM |
10452 | /* We now have determined the sizes of the various dynamic sections. |
10453 | Allocate memory for them. */ | |
0a1b45a2 | 10454 | relocs = false; |
65f38f15 AM |
10455 | for (s = dynobj->sections; s != NULL; s = s->next) |
10456 | { | |
10457 | if ((s->flags & SEC_LINKER_CREATED) == 0) | |
10458 | continue; | |
10459 | ||
1657026c | 10460 | if (s == htab->brlt || s == htab->relbrlt || s == htab->elf.srelrdyn) |
721956f4 AM |
10461 | /* These haven't been allocated yet; don't strip. */ |
10462 | continue; | |
33e44f2e AM |
10463 | else if (s == htab->elf.sgot |
10464 | || s == htab->elf.splt | |
10465 | || s == htab->elf.iplt | |
2d7ad24e | 10466 | || s == htab->pltlocal |
c456f082 | 10467 | || s == htab->glink |
9e390558 | 10468 | || s == htab->global_entry |
5474d94f AM |
10469 | || s == htab->elf.sdynbss |
10470 | || s == htab->elf.sdynrelro) | |
65f38f15 AM |
10471 | { |
10472 | /* Strip this section if we don't need it; see the | |
10473 | comment below. */ | |
5bd4f169 | 10474 | } |
58d180e8 AM |
10475 | else if (s == htab->glink_eh_frame) |
10476 | { | |
10477 | if (!bfd_is_abs_section (s->output_section)) | |
10478 | /* Not sized yet. */ | |
10479 | continue; | |
10480 | } | |
08dedd66 | 10481 | else if (startswith (s->name, ".rela")) |
5bd4f169 | 10482 | { |
c456f082 | 10483 | if (s->size != 0) |
5bd4f169 | 10484 | { |
33e44f2e | 10485 | if (s != htab->elf.srelplt) |
0a1b45a2 | 10486 | relocs = true; |
5bd4f169 AM |
10487 | |
10488 | /* We use the reloc_count field as a counter if we need | |
10489 | to copy relocs into the output file. */ | |
10490 | s->reloc_count = 0; | |
10491 | } | |
10492 | } | |
65f38f15 | 10493 | else |
5bd4f169 AM |
10494 | { |
10495 | /* It's not one of our sections, so don't allocate space. */ | |
10496 | continue; | |
10497 | } | |
10498 | ||
eea6121a | 10499 | if (s->size == 0) |
5bd4f169 | 10500 | { |
c456f082 AM |
10501 | /* If we don't need this section, strip it from the |
10502 | output file. This is mostly to handle .rela.bss and | |
10503 | .rela.plt. We must create both sections in | |
10504 | create_dynamic_sections, because they must be created | |
10505 | before the linker maps input sections to output | |
10506 | sections. The linker does that before | |
10507 | adjust_dynamic_symbol is called, and it is that | |
10508 | function which decides whether anything needs to go | |
10509 | into these sections. */ | |
8423293d | 10510 | s->flags |= SEC_EXCLUDE; |
5bd4f169 AM |
10511 | continue; |
10512 | } | |
10513 | ||
06bcf541 AM |
10514 | if (bfd_is_abs_section (s->output_section)) |
10515 | _bfd_error_handler (_("warning: discarding dynamic section %s"), | |
10516 | s->name); | |
10517 | ||
c456f082 | 10518 | if ((s->flags & SEC_HAS_CONTENTS) == 0) |
5f333394 AM |
10519 | continue; |
10520 | ||
65f38f15 AM |
10521 | /* Allocate memory for the section contents. We use bfd_zalloc |
10522 | here in case unused entries are not reclaimed before the | |
10523 | section's contents are written out. This should not happen, | |
411e1bfb AM |
10524 | but this way if it does we get a R_PPC64_NONE reloc in .rela |
10525 | sections instead of garbage. | |
10526 | We also rely on the section contents being zero when writing | |
5474d94f | 10527 | the GOT and .dynrelro. */ |
eea6121a | 10528 | s->contents = bfd_zalloc (dynobj, s->size); |
65f38f15 | 10529 | if (s->contents == NULL) |
0a1b45a2 | 10530 | return false; |
5bd4f169 AM |
10531 | } |
10532 | ||
c72f2fb2 | 10533 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next) |
e717da7e | 10534 | { |
0c8d6e5c | 10535 | if (!is_ppc64_elf (ibfd)) |
7b53ace3 AM |
10536 | continue; |
10537 | ||
e717da7e | 10538 | s = ppc64_elf_tdata (ibfd)->got; |
33e44f2e | 10539 | if (s != NULL && s != htab->elf.sgot) |
e717da7e | 10540 | { |
eea6121a | 10541 | if (s->size == 0) |
8423293d | 10542 | s->flags |= SEC_EXCLUDE; |
e717da7e AM |
10543 | else |
10544 | { | |
eea6121a | 10545 | s->contents = bfd_zalloc (ibfd, s->size); |
e717da7e | 10546 | if (s->contents == NULL) |
0a1b45a2 | 10547 | return false; |
e717da7e AM |
10548 | } |
10549 | } | |
10550 | s = ppc64_elf_tdata (ibfd)->relgot; | |
10551 | if (s != NULL) | |
10552 | { | |
eea6121a | 10553 | if (s->size == 0) |
8423293d | 10554 | s->flags |= SEC_EXCLUDE; |
e717da7e AM |
10555 | else |
10556 | { | |
eea6121a | 10557 | s->contents = bfd_zalloc (ibfd, s->size); |
e717da7e | 10558 | if (s->contents == NULL) |
0a1b45a2 AM |
10559 | return false; |
10560 | relocs = true; | |
e717da7e AM |
10561 | s->reloc_count = 0; |
10562 | } | |
10563 | } | |
10564 | } | |
10565 | ||
e86ce104 | 10566 | if (htab->elf.dynamic_sections_created) |
5bd4f169 | 10567 | { |
0a1b45a2 | 10568 | bool tls_opt; |
e8910a83 | 10569 | |
5bd4f169 AM |
10570 | /* Add some entries to the .dynamic section. We fill in the |
10571 | values later, in ppc64_elf_finish_dynamic_sections, but we | |
10572 | must add the entries now so that we get the correct size for | |
10573 | the .dynamic section. The DT_DEBUG entry is filled in by the | |
10574 | dynamic linker and used by the debugger. */ | |
dc810e39 | 10575 | #define add_dynamic_entry(TAG, VAL) \ |
5a580b3a | 10576 | _bfd_elf_add_dynamic_entry (info, TAG, VAL) |
dc810e39 | 10577 | |
0e1862bb | 10578 | if (bfd_link_executable (info)) |
5bd4f169 | 10579 | { |
dc810e39 | 10580 | if (!add_dynamic_entry (DT_DEBUG, 0)) |
0a1b45a2 | 10581 | return false; |
5bd4f169 AM |
10582 | } |
10583 | ||
33e44f2e | 10584 | if (htab->elf.splt != NULL && htab->elf.splt->size != 0) |
5bd4f169 | 10585 | { |
dc810e39 AM |
10586 | if (!add_dynamic_entry (DT_PLTGOT, 0) |
10587 | || !add_dynamic_entry (DT_PLTRELSZ, 0) | |
10588 | || !add_dynamic_entry (DT_PLTREL, DT_RELA) | |
5d1634d7 AM |
10589 | || !add_dynamic_entry (DT_JMPREL, 0) |
10590 | || !add_dynamic_entry (DT_PPC64_GLINK, 0)) | |
0a1b45a2 | 10591 | return false; |
5bd4f169 AM |
10592 | } |
10593 | ||
ee67d69a | 10594 | if (NO_OPD_RELOCS && abiversion (output_bfd) <= 1) |
19397422 AM |
10595 | { |
10596 | if (!add_dynamic_entry (DT_PPC64_OPD, 0) | |
10597 | || !add_dynamic_entry (DT_PPC64_OPDSZ, 0)) | |
0a1b45a2 | 10598 | return false; |
19397422 AM |
10599 | } |
10600 | ||
7c9cf415 | 10601 | tls_opt = (htab->params->tls_get_addr_opt |
9e7028aa AM |
10602 | && ((htab->tls_get_addr_fd != NULL |
10603 | && htab->tls_get_addr_fd->elf.plt.plist != NULL) | |
10604 | || (htab->tga_desc_fd != NULL | |
10605 | && htab->tga_desc_fd->elf.plt.plist != NULL))); | |
e8910a83 AM |
10606 | if (tls_opt || !htab->opd_abi) |
10607 | { | |
10608 | if (!add_dynamic_entry (DT_PPC64_OPT, tls_opt ? PPC64_OPT_TLS : 0)) | |
0a1b45a2 | 10609 | return false; |
e8910a83 | 10610 | } |
a7f2871e | 10611 | |
5bd4f169 AM |
10612 | if (relocs) |
10613 | { | |
dc810e39 AM |
10614 | if (!add_dynamic_entry (DT_RELA, 0) |
10615 | || !add_dynamic_entry (DT_RELASZ, 0) | |
10616 | || !add_dynamic_entry (DT_RELAENT, sizeof (Elf64_External_Rela))) | |
0a1b45a2 | 10617 | return false; |
5bd4f169 | 10618 | |
65f38f15 AM |
10619 | /* If any dynamic relocs apply to a read-only section, |
10620 | then we need a DT_TEXTREL entry. */ | |
248866a8 | 10621 | if ((info->flags & DF_TEXTREL) == 0) |
d49e5065 L |
10622 | elf_link_hash_traverse (&htab->elf, |
10623 | _bfd_elf_maybe_set_textrel, info); | |
5bd4f169 | 10624 | |
65f38f15 | 10625 | if ((info->flags & DF_TEXTREL) != 0) |
5bd4f169 | 10626 | { |
65f38f15 | 10627 | if (!add_dynamic_entry (DT_TEXTREL, 0)) |
0a1b45a2 | 10628 | return false; |
5bd4f169 | 10629 | } |
5bd4f169 | 10630 | } |
5bd4f169 | 10631 | } |
65f38f15 | 10632 | #undef add_dynamic_entry |
5bd4f169 | 10633 | |
0a1b45a2 | 10634 | return true; |
5bd4f169 AM |
10635 | } |
10636 | ||
a345bc8d AM |
10637 | /* Return TRUE if symbol should be hashed in the `.gnu.hash' section. */ |
10638 | ||
0a1b45a2 | 10639 | static bool |
a345bc8d AM |
10640 | ppc64_elf_hash_symbol (struct elf_link_hash_entry *h) |
10641 | { | |
10642 | if (h->plt.plist != NULL | |
10643 | && !h->def_regular | |
10644 | && !h->pointer_equality_needed) | |
0a1b45a2 | 10645 | return false; |
a345bc8d AM |
10646 | |
10647 | return _bfd_elf_hash_symbol (h); | |
10648 | } | |
10649 | ||
721956f4 | 10650 | /* Determine the type of stub needed, if any, for a call. */ |
5bd4f169 | 10651 | |
7aba54da | 10652 | static inline enum ppc_stub_main_type |
4ce794b7 AM |
10653 | ppc_type_of_stub (asection *input_sec, |
10654 | const Elf_Internal_Rela *rel, | |
10655 | struct ppc_link_hash_entry **hash, | |
e054468f | 10656 | struct plt_entry **plt_ent, |
6911b7dc AM |
10657 | bfd_vma destination, |
10658 | unsigned long local_off) | |
5bd4f169 | 10659 | { |
721956f4 AM |
10660 | struct ppc_link_hash_entry *h = *hash; |
10661 | bfd_vma location; | |
10662 | bfd_vma branch_offset; | |
10663 | bfd_vma max_branch_offset; | |
4ce794b7 | 10664 | enum elf_ppc64_reloc_type r_type; |
5bd4f169 | 10665 | |
721956f4 AM |
10666 | if (h != NULL) |
10667 | { | |
e054468f | 10668 | struct plt_entry *ent; |
7fe2b9a6 | 10669 | struct ppc_link_hash_entry *fdh = h; |
b31867b6 AM |
10670 | if (h->oh != NULL |
10671 | && h->oh->is_func_descriptor) | |
7b8f6675 AM |
10672 | { |
10673 | fdh = ppc_follow_link (h->oh); | |
10674 | *hash = fdh; | |
10675 | } | |
8387904d | 10676 | |
e054468f AM |
10677 | for (ent = fdh->elf.plt.plist; ent != NULL; ent = ent->next) |
10678 | if (ent->addend == rel->r_addend | |
10679 | && ent->plt.offset != (bfd_vma) -1) | |
10680 | { | |
e054468f AM |
10681 | *plt_ent = ent; |
10682 | return ppc_stub_plt_call; | |
10683 | } | |
5bd4f169 | 10684 | |
7fe2b9a6 AM |
10685 | /* Here, we know we don't have a plt entry. If we don't have a |
10686 | either a defined function descriptor or a defined entry symbol | |
10687 | in a regular object file, then it is pointless trying to make | |
10688 | any other type of stub. */ | |
854b41e7 AM |
10689 | if (!is_static_defined (&fdh->elf) |
10690 | && !is_static_defined (&h->elf)) | |
721956f4 | 10691 | return ppc_stub_none; |
5d1634d7 | 10692 | } |
e054468f AM |
10693 | else if (elf_local_got_ents (input_sec->owner) != NULL) |
10694 | { | |
10695 | Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (input_sec->owner); | |
10696 | struct plt_entry **local_plt = (struct plt_entry **) | |
10697 | elf_local_got_ents (input_sec->owner) + symtab_hdr->sh_info; | |
10698 | unsigned long r_symndx = ELF64_R_SYM (rel->r_info); | |
10699 | ||
10700 | if (local_plt[r_symndx] != NULL) | |
10701 | { | |
10702 | struct plt_entry *ent; | |
10703 | ||
10704 | for (ent = local_plt[r_symndx]; ent != NULL; ent = ent->next) | |
10705 | if (ent->addend == rel->r_addend | |
10706 | && ent->plt.offset != (bfd_vma) -1) | |
10707 | { | |
10708 | *plt_ent = ent; | |
10709 | return ppc_stub_plt_call; | |
10710 | } | |
10711 | } | |
10712 | } | |
5d1634d7 | 10713 | |
721956f4 AM |
10714 | /* Determine where the call point is. */ |
10715 | location = (input_sec->output_offset | |
10716 | + input_sec->output_section->vma | |
10717 | + rel->r_offset); | |
5d1634d7 | 10718 | |
721956f4 AM |
10719 | branch_offset = destination - location; |
10720 | r_type = ELF64_R_TYPE (rel->r_info); | |
5d1634d7 | 10721 | |
721956f4 AM |
10722 | /* Determine if a long branch stub is needed. */ |
10723 | max_branch_offset = 1 << 25; | |
23cedd1d AM |
10724 | if (r_type == R_PPC64_REL14 |
10725 | || r_type == R_PPC64_REL14_BRTAKEN | |
10726 | || r_type == R_PPC64_REL14_BRNTAKEN) | |
721956f4 | 10727 | max_branch_offset = 1 << 15; |
5d1634d7 | 10728 | |
6911b7dc | 10729 | if (branch_offset + max_branch_offset >= 2 * max_branch_offset - local_off) |
721956f4 AM |
10730 | /* We need a stub. Figure out whether a long_branch or plt_branch |
10731 | is needed later. */ | |
10732 | return ppc_stub_long_branch; | |
5d1634d7 | 10733 | |
721956f4 | 10734 | return ppc_stub_none; |
5d1634d7 AM |
10735 | } |
10736 | ||
f891966f AM |
10737 | /* Gets the address of a label (1:) in r11 and builds an offset in r12, |
10738 | then adds it to r11 (LOAD false) or loads r12 from r11+r12 (LOAD true). | |
10739 | . mflr %r12 | |
10740 | . bcl 20,31,1f | |
10741 | .1: mflr %r11 | |
10742 | . mtlr %r12 | |
05d0e962 | 10743 | . lis %r12,xxx-1b@highest |
f891966f | 10744 | . ori %r12,%r12,xxx-1b@higher |
05d0e962 | 10745 | . sldi %r12,%r12,32 |
f891966f | 10746 | . oris %r12,%r12,xxx-1b@high |
05d0e962 | 10747 | . ori %r12,%r12,xxx-1b@l |
f891966f | 10748 | . add/ldx %r12,%r11,%r12 */ |
05d0e962 AM |
10749 | |
10750 | static bfd_byte * | |
0a1b45a2 | 10751 | build_offset (bfd *abfd, bfd_byte *p, bfd_vma off, bool load) |
05d0e962 | 10752 | { |
f891966f AM |
10753 | bfd_put_32 (abfd, MFLR_R12, p); |
10754 | p += 4; | |
10755 | bfd_put_32 (abfd, BCL_20_31, p); | |
10756 | p += 4; | |
10757 | bfd_put_32 (abfd, MFLR_R11, p); | |
10758 | p += 4; | |
10759 | bfd_put_32 (abfd, MTLR_R12, p); | |
10760 | p += 4; | |
05d0e962 AM |
10761 | if (off + 0x8000 < 0x10000) |
10762 | { | |
10763 | if (load) | |
10764 | bfd_put_32 (abfd, LD_R12_0R11 + PPC_LO (off), p); | |
10765 | else | |
10766 | bfd_put_32 (abfd, ADDI_R12_R11 + PPC_LO (off), p); | |
10767 | p += 4; | |
10768 | } | |
10769 | else if (off + 0x80008000ULL < 0x100000000ULL) | |
10770 | { | |
10771 | bfd_put_32 (abfd, ADDIS_R12_R11 + PPC_HA (off), p); | |
10772 | p += 4; | |
10773 | if (load) | |
10774 | bfd_put_32 (abfd, LD_R12_0R12 + PPC_LO (off), p); | |
10775 | else | |
10776 | bfd_put_32 (abfd, ADDI_R12_R12 + PPC_LO (off), p); | |
10777 | p += 4; | |
10778 | } | |
10779 | else | |
10780 | { | |
10781 | if (off + 0x800000000000ULL < 0x1000000000000ULL) | |
10782 | { | |
10783 | bfd_put_32 (abfd, LI_R12_0 + ((off >> 32) & 0xffff), p); | |
10784 | p += 4; | |
10785 | } | |
10786 | else | |
10787 | { | |
10788 | bfd_put_32 (abfd, LIS_R12 + ((off >> 48) & 0xffff), p); | |
10789 | p += 4; | |
10790 | if (((off >> 32) & 0xffff) != 0) | |
10791 | { | |
10792 | bfd_put_32 (abfd, ORI_R12_R12_0 + ((off >> 32) & 0xffff), p); | |
10793 | p += 4; | |
10794 | } | |
10795 | } | |
10796 | if (((off >> 32) & 0xffffffffULL) != 0) | |
10797 | { | |
10798 | bfd_put_32 (abfd, SLDI_R12_R12_32, p); | |
10799 | p += 4; | |
10800 | } | |
10801 | if (PPC_HI (off) != 0) | |
10802 | { | |
10803 | bfd_put_32 (abfd, ORIS_R12_R12_0 + PPC_HI (off), p); | |
10804 | p += 4; | |
10805 | } | |
10806 | if (PPC_LO (off) != 0) | |
10807 | { | |
10808 | bfd_put_32 (abfd, ORI_R12_R12_0 + PPC_LO (off), p); | |
10809 | p += 4; | |
10810 | } | |
10811 | if (load) | |
10812 | bfd_put_32 (abfd, LDX_R12_R11_R12, p); | |
10813 | else | |
10814 | bfd_put_32 (abfd, ADD_R12_R11_R12, p); | |
10815 | p += 4; | |
10816 | } | |
10817 | return p; | |
10818 | } | |
10819 | ||
10820 | static unsigned int | |
10821 | size_offset (bfd_vma off) | |
10822 | { | |
10823 | unsigned int size; | |
10824 | if (off + 0x8000 < 0x10000) | |
10825 | size = 4; | |
10826 | else if (off + 0x80008000ULL < 0x100000000ULL) | |
10827 | size = 8; | |
10828 | else | |
10829 | { | |
10830 | if (off + 0x800000000000ULL < 0x1000000000000ULL) | |
10831 | size = 4; | |
10832 | else | |
10833 | { | |
10834 | size = 4; | |
10835 | if (((off >> 32) & 0xffff) != 0) | |
10836 | size += 4; | |
10837 | } | |
10838 | if (((off >> 32) & 0xffffffffULL) != 0) | |
10839 | size += 4; | |
10840 | if (PPC_HI (off) != 0) | |
10841 | size += 4; | |
10842 | if (PPC_LO (off) != 0) | |
10843 | size += 4; | |
10844 | size += 4; | |
10845 | } | |
f891966f | 10846 | return size + 16; |
05d0e962 AM |
10847 | } |
10848 | ||
3d58e1fc AM |
10849 | static unsigned int |
10850 | num_relocs_for_offset (bfd_vma off) | |
10851 | { | |
10852 | unsigned int num_rel; | |
10853 | if (off + 0x8000 < 0x10000) | |
10854 | num_rel = 1; | |
10855 | else if (off + 0x80008000ULL < 0x100000000ULL) | |
10856 | num_rel = 2; | |
10857 | else | |
10858 | { | |
10859 | num_rel = 1; | |
10860 | if (off + 0x800000000000ULL >= 0x1000000000000ULL | |
10861 | && ((off >> 32) & 0xffff) != 0) | |
10862 | num_rel += 1; | |
10863 | if (PPC_HI (off) != 0) | |
10864 | num_rel += 1; | |
10865 | if (PPC_LO (off) != 0) | |
10866 | num_rel += 1; | |
10867 | } | |
10868 | return num_rel; | |
10869 | } | |
10870 | ||
10871 | static Elf_Internal_Rela * | |
10872 | emit_relocs_for_offset (struct bfd_link_info *info, Elf_Internal_Rela *r, | |
10873 | bfd_vma roff, bfd_vma targ, bfd_vma off) | |
10874 | { | |
10875 | bfd_vma relative_targ = targ - (roff - 8); | |
10876 | if (bfd_big_endian (info->output_bfd)) | |
10877 | roff += 2; | |
10878 | r->r_offset = roff; | |
10879 | r->r_addend = relative_targ + roff; | |
10880 | if (off + 0x8000 < 0x10000) | |
10881 | r->r_info = ELF64_R_INFO (0, R_PPC64_REL16); | |
10882 | else if (off + 0x80008000ULL < 0x100000000ULL) | |
10883 | { | |
10884 | r->r_info = ELF64_R_INFO (0, R_PPC64_REL16_HA); | |
10885 | ++r; | |
10886 | roff += 4; | |
10887 | r->r_offset = roff; | |
10888 | r->r_info = ELF64_R_INFO (0, R_PPC64_REL16_LO); | |
10889 | r->r_addend = relative_targ + roff; | |
10890 | } | |
10891 | else | |
10892 | { | |
10893 | if (off + 0x800000000000ULL < 0x1000000000000ULL) | |
10894 | r->r_info = ELF64_R_INFO (0, R_PPC64_REL16_HIGHER); | |
10895 | else | |
10896 | { | |
10897 | r->r_info = ELF64_R_INFO (0, R_PPC64_REL16_HIGHEST); | |
10898 | if (((off >> 32) & 0xffff) != 0) | |
10899 | { | |
10900 | ++r; | |
10901 | roff += 4; | |
10902 | r->r_offset = roff; | |
10903 | r->r_info = ELF64_R_INFO (0, R_PPC64_REL16_HIGHER); | |
10904 | r->r_addend = relative_targ + roff; | |
10905 | } | |
10906 | } | |
10907 | if (((off >> 32) & 0xffffffffULL) != 0) | |
10908 | roff += 4; | |
10909 | if (PPC_HI (off) != 0) | |
10910 | { | |
10911 | ++r; | |
10912 | roff += 4; | |
10913 | r->r_offset = roff; | |
10914 | r->r_info = ELF64_R_INFO (0, R_PPC64_REL16_HIGH); | |
10915 | r->r_addend = relative_targ + roff; | |
10916 | } | |
10917 | if (PPC_LO (off) != 0) | |
10918 | { | |
10919 | ++r; | |
10920 | roff += 4; | |
10921 | r->r_offset = roff; | |
10922 | r->r_info = ELF64_R_INFO (0, R_PPC64_REL16_LO); | |
10923 | r->r_addend = relative_targ + roff; | |
10924 | } | |
10925 | } | |
10926 | return r; | |
10927 | } | |
10928 | ||
04bdff6a | 10929 | static bfd_byte * |
7c1f4227 | 10930 | build_power10_offset (bfd *abfd, bfd_byte *p, bfd_vma off, int odd, |
0a1b45a2 | 10931 | bool load) |
04bdff6a AM |
10932 | { |
10933 | uint64_t insn; | |
10934 | if (off - odd + (1ULL << 33) < 1ULL << 34) | |
10935 | { | |
10936 | off -= odd; | |
10937 | if (odd) | |
10938 | { | |
10939 | bfd_put_32 (abfd, NOP, p); | |
10940 | p += 4; | |
10941 | } | |
10942 | if (load) | |
10943 | insn = PLD_R12_PC; | |
10944 | else | |
10945 | insn = PADDI_R12_PC; | |
10946 | insn |= D34 (off); | |
10947 | bfd_put_32 (abfd, insn >> 32, p); | |
10948 | p += 4; | |
10949 | bfd_put_32 (abfd, insn, p); | |
10950 | } | |
10951 | /* The minimum value for paddi is -0x200000000. The minimum value | |
10952 | for li is -0x8000, which when shifted by 34 and added gives a | |
10953 | minimum value of -0x2000200000000. The maximum value is | |
10954 | 0x1ffffffff+0x7fff<<34 which is 0x2000200000000-1. */ | |
10955 | else if (off - (8 - odd) + (0x20002ULL << 32) < 0x40004ULL << 32) | |
10956 | { | |
10957 | off -= 8 - odd; | |
10958 | bfd_put_32 (abfd, LI_R11_0 | (HA34 (off) & 0xffff), p); | |
10959 | p += 4; | |
10960 | if (!odd) | |
10961 | { | |
10962 | bfd_put_32 (abfd, SLDI_R11_R11_34, p); | |
10963 | p += 4; | |
10964 | } | |
10965 | insn = PADDI_R12_PC | D34 (off); | |
10966 | bfd_put_32 (abfd, insn >> 32, p); | |
10967 | p += 4; | |
10968 | bfd_put_32 (abfd, insn, p); | |
10969 | p += 4; | |
10970 | if (odd) | |
10971 | { | |
10972 | bfd_put_32 (abfd, SLDI_R11_R11_34, p); | |
10973 | p += 4; | |
10974 | } | |
10975 | if (load) | |
10976 | bfd_put_32 (abfd, LDX_R12_R11_R12, p); | |
10977 | else | |
10978 | bfd_put_32 (abfd, ADD_R12_R11_R12, p); | |
10979 | } | |
10980 | else | |
10981 | { | |
10982 | off -= odd + 8; | |
10983 | bfd_put_32 (abfd, LIS_R11 | ((HA34 (off) >> 16) & 0x3fff), p); | |
10984 | p += 4; | |
10985 | bfd_put_32 (abfd, ORI_R11_R11_0 | (HA34 (off) & 0xffff), p); | |
10986 | p += 4; | |
10987 | if (odd) | |
10988 | { | |
10989 | bfd_put_32 (abfd, SLDI_R11_R11_34, p); | |
10990 | p += 4; | |
10991 | } | |
10992 | insn = PADDI_R12_PC | D34 (off); | |
10993 | bfd_put_32 (abfd, insn >> 32, p); | |
10994 | p += 4; | |
10995 | bfd_put_32 (abfd, insn, p); | |
10996 | p += 4; | |
10997 | if (!odd) | |
10998 | { | |
10999 | bfd_put_32 (abfd, SLDI_R11_R11_34, p); | |
11000 | p += 4; | |
11001 | } | |
11002 | if (load) | |
11003 | bfd_put_32 (abfd, LDX_R12_R11_R12, p); | |
11004 | else | |
11005 | bfd_put_32 (abfd, ADD_R12_R11_R12, p); | |
11006 | } | |
11007 | p += 4; | |
11008 | return p; | |
11009 | } | |
11010 | ||
11011 | static unsigned int | |
7c1f4227 | 11012 | size_power10_offset (bfd_vma off, int odd) |
04bdff6a AM |
11013 | { |
11014 | if (off - odd + (1ULL << 33) < 1ULL << 34) | |
11015 | return odd + 8; | |
11016 | else if (off - (8 - odd) + (0x20002ULL << 32) < 0x40004ULL << 32) | |
11017 | return 20; | |
11018 | else | |
11019 | return 24; | |
11020 | } | |
11021 | ||
11022 | static unsigned int | |
7c1f4227 | 11023 | num_relocs_for_power10_offset (bfd_vma off, int odd) |
04bdff6a AM |
11024 | { |
11025 | if (off - odd + (1ULL << 33) < 1ULL << 34) | |
11026 | return 1; | |
11027 | else if (off - (8 - odd) + (0x20002ULL << 32) < 0x40004ULL << 32) | |
11028 | return 2; | |
11029 | else | |
11030 | return 3; | |
11031 | } | |
11032 | ||
11033 | static Elf_Internal_Rela * | |
7c1f4227 | 11034 | emit_relocs_for_power10_offset (struct bfd_link_info *info, |
04bdff6a AM |
11035 | Elf_Internal_Rela *r, bfd_vma roff, |
11036 | bfd_vma targ, bfd_vma off, int odd) | |
11037 | { | |
11038 | if (off - odd + (1ULL << 33) < 1ULL << 34) | |
11039 | roff += odd; | |
11040 | else if (off - (8 - odd) + (0x20002ULL << 32) < 0x40004ULL << 32) | |
11041 | { | |
11042 | int d_offset = bfd_big_endian (info->output_bfd) ? 2 : 0; | |
11043 | r->r_offset = roff + d_offset; | |
11044 | r->r_addend = targ + 8 - odd - d_offset; | |
11045 | r->r_info = ELF64_R_INFO (0, R_PPC64_REL16_HIGHERA34); | |
11046 | ++r; | |
11047 | roff += 8 - odd; | |
11048 | } | |
11049 | else | |
11050 | { | |
11051 | int d_offset = bfd_big_endian (info->output_bfd) ? 2 : 0; | |
11052 | r->r_offset = roff + d_offset; | |
11053 | r->r_addend = targ + 8 + odd - d_offset; | |
11054 | r->r_info = ELF64_R_INFO (0, R_PPC64_REL16_HIGHESTA34); | |
11055 | ++r; | |
11056 | roff += 4; | |
11057 | r->r_offset = roff + d_offset; | |
11058 | r->r_addend = targ + 4 + odd - d_offset; | |
11059 | r->r_info = ELF64_R_INFO (0, R_PPC64_REL16_HIGHERA34); | |
11060 | ++r; | |
11061 | roff += 4 + odd; | |
11062 | } | |
11063 | r->r_offset = roff; | |
11064 | r->r_addend = targ; | |
11065 | r->r_info = ELF64_R_INFO (0, R_PPC64_PCREL34); | |
11066 | return r; | |
11067 | } | |
11068 | ||
df136d64 AM |
11069 | /* Emit .eh_frame opcode to advance pc by DELTA. */ |
11070 | ||
11071 | static bfd_byte * | |
11072 | eh_advance (bfd *abfd, bfd_byte *eh, unsigned int delta) | |
11073 | { | |
11074 | delta /= 4; | |
11075 | if (delta < 64) | |
11076 | *eh++ = DW_CFA_advance_loc + delta; | |
11077 | else if (delta < 256) | |
11078 | { | |
11079 | *eh++ = DW_CFA_advance_loc1; | |
11080 | *eh++ = delta; | |
11081 | } | |
11082 | else if (delta < 65536) | |
11083 | { | |
11084 | *eh++ = DW_CFA_advance_loc2; | |
11085 | bfd_put_16 (abfd, delta, eh); | |
11086 | eh += 2; | |
11087 | } | |
11088 | else | |
11089 | { | |
11090 | *eh++ = DW_CFA_advance_loc4; | |
11091 | bfd_put_32 (abfd, delta, eh); | |
11092 | eh += 4; | |
11093 | } | |
11094 | return eh; | |
11095 | } | |
11096 | ||
11097 | /* Size of required .eh_frame opcode to advance pc by DELTA. */ | |
11098 | ||
11099 | static unsigned int | |
11100 | eh_advance_size (unsigned int delta) | |
11101 | { | |
11102 | if (delta < 64 * 4) | |
11103 | /* DW_CFA_advance_loc+[1..63]. */ | |
11104 | return 1; | |
11105 | if (delta < 256 * 4) | |
11106 | /* DW_CFA_advance_loc1, byte. */ | |
11107 | return 2; | |
11108 | if (delta < 65536 * 4) | |
11109 | /* DW_CFA_advance_loc2, 2 bytes. */ | |
11110 | return 3; | |
11111 | /* DW_CFA_advance_loc4, 4 bytes. */ | |
11112 | return 5; | |
11113 | } | |
11114 | ||
794e51c0 AM |
11115 | /* With power7 weakly ordered memory model, it is possible for ld.so |
11116 | to update a plt entry in one thread and have another thread see a | |
11117 | stale zero toc entry. To avoid this we need some sort of acquire | |
11118 | barrier in the call stub. One solution is to make the load of the | |
11119 | toc word seem to appear to depend on the load of the function entry | |
11120 | word. Another solution is to test for r2 being zero, and branch to | |
11121 | the appropriate glink entry if so. | |
11122 | ||
11123 | . fake dep barrier compare | |
71a39c98 AM |
11124 | . ld 12,xxx(2) ld 12,xxx(2) |
11125 | . mtctr 12 mtctr 12 | |
11126 | . xor 11,12,12 ld 2,xxx+8(2) | |
794e51c0 AM |
11127 | . add 2,2,11 cmpldi 2,0 |
11128 | . ld 2,xxx+8(2) bnectr+ | |
11129 | . bctr b <glink_entry> | |
11130 | ||
11131 | The solution involving the compare turns out to be faster, so | |
11132 | that's what we use unless the branch won't reach. */ | |
11133 | ||
11134 | #define ALWAYS_USE_FAKE_DEP 0 | |
11135 | #define ALWAYS_EMIT_R2SAVE 0 | |
5d1634d7 | 11136 | |
794e51c0 AM |
11137 | static inline unsigned int |
11138 | plt_stub_size (struct ppc_link_hash_table *htab, | |
11139 | struct ppc_stub_hash_entry *stub_entry, | |
29433886 AM |
11140 | bfd_vma off, |
11141 | unsigned int odd) | |
794e51c0 | 11142 | { |
05d0e962 | 11143 | unsigned size; |
b9e5796b | 11144 | |
7aba54da | 11145 | if (stub_entry->type.sub == ppc_stub_notoc) |
05d0e962 | 11146 | { |
7aba54da AM |
11147 | size = 8 + size_power10_offset (off, odd); |
11148 | if (stub_entry->type.r2save) | |
11149 | size += 4; | |
11150 | } | |
11151 | else if (stub_entry->type.sub == ppc_stub_p9notoc) | |
11152 | { | |
11153 | size = 8 + size_offset (off - 8); | |
11154 | if (stub_entry->type.r2save) | |
05d0e962 | 11155 | size += 4; |
05d0e962 | 11156 | } |
29433886 | 11157 | else |
b9e5796b | 11158 | { |
29433886 | 11159 | size = 12; |
7aba54da | 11160 | if (ALWAYS_EMIT_R2SAVE || stub_entry->type.r2save) |
b9e5796b | 11161 | size += 4; |
29433886 | 11162 | if (PPC_HA (off) != 0) |
b9e5796b | 11163 | size += 4; |
29433886 AM |
11164 | if (htab->opd_abi) |
11165 | { | |
11166 | size += 4; | |
11167 | if (htab->params->plt_static_chain) | |
11168 | size += 4; | |
11169 | if (htab->params->plt_thread_safe | |
11170 | && htab->elf.dynamic_sections_created | |
11171 | && stub_entry->h != NULL | |
11172 | && stub_entry->h->elf.dynindx != -1) | |
11173 | size += 8; | |
11174 | if (PPC_HA (off + 8 + 8 * htab->params->plt_static_chain) | |
11175 | != PPC_HA (off)) | |
11176 | size += 4; | |
11177 | } | |
b9e5796b | 11178 | } |
794e51c0 | 11179 | if (stub_entry->h != NULL |
ed7007c1 | 11180 | && is_tls_get_addr (&stub_entry->h->elf, htab) |
7c9cf415 | 11181 | && htab->params->tls_get_addr_opt) |
f378ab09 | 11182 | { |
29433886 | 11183 | if (!htab->params->no_tls_get_addr_regsave) |
9e7028aa | 11184 | { |
29433886 | 11185 | size += 30 * 4; |
7aba54da | 11186 | if (stub_entry->type.r2save) |
29433886 | 11187 | size += 4; |
9e7028aa AM |
11188 | } |
11189 | else | |
11190 | { | |
29433886 | 11191 | size += 7 * 4; |
7aba54da | 11192 | if (stub_entry->type.r2save) |
29433886 | 11193 | size += 6 * 4; |
9e7028aa | 11194 | } |
f378ab09 | 11195 | } |
794e51c0 AM |
11196 | return size; |
11197 | } | |
11198 | ||
2420fff6 AM |
11199 | /* Depending on the sign of plt_stub_align: |
11200 | If positive, return the padding to align to a 2**plt_stub_align | |
11201 | boundary. | |
11202 | If negative, if this stub would cross fewer 2**plt_stub_align | |
11203 | boundaries if we align, then return the padding needed to do so. */ | |
11204 | ||
794e51c0 | 11205 | static inline unsigned int |
0f0d9373 | 11206 | plt_stub_pad (int plt_stub_align, |
2405fc40 | 11207 | bfd_vma stub_off, |
0f0d9373 | 11208 | unsigned int stub_size) |
794e51c0 | 11209 | { |
0f0d9373 | 11210 | unsigned int stub_align; |
794e51c0 | 11211 | |
0f0d9373 AM |
11212 | if (plt_stub_align >= 0) |
11213 | stub_align = 1u << plt_stub_align; | |
11214 | else | |
2420fff6 | 11215 | { |
0f0d9373 AM |
11216 | stub_align = 1u << -plt_stub_align; |
11217 | if (((stub_off + stub_size - 1) & -stub_align) - (stub_off & -stub_align) | |
11218 | <= ((stub_size - 1) & -stub_align)) | |
11219 | return 0; | |
2420fff6 | 11220 | } |
0f0d9373 | 11221 | return stub_align - 1 - ((stub_off - 1) & (stub_align - 1)); |
794e51c0 AM |
11222 | } |
11223 | ||
7aba54da | 11224 | /* Build a toc using .plt call stub. */ |
794e51c0 AM |
11225 | |
11226 | static inline bfd_byte * | |
11227 | build_plt_stub (struct ppc_link_hash_table *htab, | |
11228 | struct ppc_stub_hash_entry *stub_entry, | |
11229 | bfd_byte *p, bfd_vma offset, Elf_Internal_Rela *r) | |
11230 | { | |
e7d1c40c | 11231 | bfd *obfd = htab->params->stub_bfd; |
0a1b45a2 AM |
11232 | bool plt_load_toc = htab->opd_abi; |
11233 | bool plt_static_chain = htab->params->plt_static_chain; | |
11234 | bool plt_thread_safe = (htab->params->plt_thread_safe | |
11235 | && htab->elf.dynamic_sections_created | |
11236 | && stub_entry->h != NULL | |
11237 | && stub_entry->h->elf.dynindx != -1); | |
11238 | bool use_fake_dep = plt_thread_safe; | |
794e51c0 AM |
11239 | bfd_vma cmp_branch_off = 0; |
11240 | ||
11241 | if (!ALWAYS_USE_FAKE_DEP | |
b9e5796b | 11242 | && plt_load_toc |
794e51c0 | 11243 | && plt_thread_safe |
9e51d549 AM |
11244 | && !(stub_entry->h != NULL |
11245 | && is_tls_get_addr (&stub_entry->h->elf, htab) | |
7c9cf415 | 11246 | && htab->params->tls_get_addr_opt)) |
794e51c0 AM |
11247 | { |
11248 | bfd_vma pltoff = stub_entry->plt_ent->plt.offset & ~1; | |
b9e5796b AM |
11249 | bfd_vma pltindex = ((pltoff - PLT_INITIAL_ENTRY_SIZE (htab)) |
11250 | / PLT_ENTRY_SIZE (htab)); | |
9e390558 | 11251 | bfd_vma glinkoff = GLINK_PLTRESOLVE_SIZE (htab) + pltindex * 8; |
794e51c0 AM |
11252 | bfd_vma to, from; |
11253 | ||
68d62958 AM |
11254 | if (pltindex > 32768) |
11255 | glinkoff += (pltindex - 32768) * 4; | |
794e51c0 AM |
11256 | to = (glinkoff |
11257 | + htab->glink->output_offset | |
11258 | + htab->glink->output_section->vma); | |
6f20ed8a | 11259 | from = (p - stub_entry->group->stub_sec->contents |
7aba54da | 11260 | + 4 * (ALWAYS_EMIT_R2SAVE || stub_entry->type.r2save) |
794e51c0 AM |
11261 | + 4 * (PPC_HA (offset) != 0) |
11262 | + 4 * (PPC_HA (offset + 8 + 8 * plt_static_chain) | |
11263 | != PPC_HA (offset)) | |
11264 | + 4 * (plt_static_chain != 0) | |
11265 | + 20 | |
6f20ed8a AM |
11266 | + stub_entry->group->stub_sec->output_offset |
11267 | + stub_entry->group->stub_sec->output_section->vma); | |
794e51c0 AM |
11268 | cmp_branch_off = to - from; |
11269 | use_fake_dep = cmp_branch_off + (1 << 25) >= (1 << 26); | |
11270 | } | |
11271 | ||
ac2df442 AM |
11272 | if (PPC_HA (offset) != 0) |
11273 | { | |
176a0d42 AM |
11274 | if (r != NULL) |
11275 | { | |
7aba54da | 11276 | if (ALWAYS_EMIT_R2SAVE || stub_entry->type.r2save) |
794e51c0 | 11277 | r[0].r_offset += 4; |
176a0d42 | 11278 | r[0].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_HA); |
3b421ab3 | 11279 | r[1].r_offset = r[0].r_offset + 4; |
176a0d42 AM |
11280 | r[1].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS); |
11281 | r[1].r_addend = r[0].r_addend; | |
b9e5796b | 11282 | if (plt_load_toc) |
176a0d42 | 11283 | { |
b9e5796b | 11284 | if (PPC_HA (offset + 8 + 8 * plt_static_chain) != PPC_HA (offset)) |
c7131b65 | 11285 | { |
b9e5796b AM |
11286 | r[2].r_offset = r[1].r_offset + 4; |
11287 | r[2].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_LO); | |
11288 | r[2].r_addend = r[0].r_addend; | |
11289 | } | |
11290 | else | |
11291 | { | |
11292 | r[2].r_offset = r[1].r_offset + 8 + 8 * use_fake_dep; | |
11293 | r[2].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS); | |
11294 | r[2].r_addend = r[0].r_addend + 8; | |
11295 | if (plt_static_chain) | |
11296 | { | |
11297 | r[3].r_offset = r[2].r_offset + 4; | |
11298 | r[3].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS); | |
11299 | r[3].r_addend = r[0].r_addend + 16; | |
11300 | } | |
c7131b65 | 11301 | } |
176a0d42 AM |
11302 | } |
11303 | } | |
7aba54da | 11304 | if (ALWAYS_EMIT_R2SAVE || stub_entry->type.r2save) |
a078d95a | 11305 | bfd_put_32 (obfd, STD_R2_0R1 + STK_TOC (htab), p), p += 4; |
397998fc AM |
11306 | if (plt_load_toc) |
11307 | { | |
11308 | bfd_put_32 (obfd, ADDIS_R11_R2 | PPC_HA (offset), p), p += 4; | |
11309 | bfd_put_32 (obfd, LD_R12_0R11 | PPC_LO (offset), p), p += 4; | |
11310 | } | |
11311 | else | |
11312 | { | |
11313 | bfd_put_32 (obfd, ADDIS_R12_R2 | PPC_HA (offset), p), p += 4; | |
11314 | bfd_put_32 (obfd, LD_R12_0R12 | PPC_LO (offset), p), p += 4; | |
11315 | } | |
b9e5796b AM |
11316 | if (plt_load_toc |
11317 | && PPC_HA (offset + 8 + 8 * plt_static_chain) != PPC_HA (offset)) | |
ac2df442 | 11318 | { |
71a39c98 | 11319 | bfd_put_32 (obfd, ADDI_R11_R11 | PPC_LO (offset), p), p += 4; |
ac2df442 AM |
11320 | offset = 0; |
11321 | } | |
71a39c98 | 11322 | bfd_put_32 (obfd, MTCTR_R12, p), p += 4; |
b9e5796b | 11323 | if (plt_load_toc) |
794e51c0 | 11324 | { |
b9e5796b AM |
11325 | if (use_fake_dep) |
11326 | { | |
11327 | bfd_put_32 (obfd, XOR_R2_R12_R12, p), p += 4; | |
11328 | bfd_put_32 (obfd, ADD_R11_R11_R2, p), p += 4; | |
11329 | } | |
11330 | bfd_put_32 (obfd, LD_R2_0R11 | PPC_LO (offset + 8), p), p += 4; | |
11331 | if (plt_static_chain) | |
11332 | bfd_put_32 (obfd, LD_R11_0R11 | PPC_LO (offset + 16), p), p += 4; | |
794e51c0 | 11333 | } |
ac2df442 AM |
11334 | } |
11335 | else | |
11336 | { | |
176a0d42 AM |
11337 | if (r != NULL) |
11338 | { | |
7aba54da | 11339 | if (ALWAYS_EMIT_R2SAVE || stub_entry->type.r2save) |
794e51c0 | 11340 | r[0].r_offset += 4; |
176a0d42 | 11341 | r[0].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_DS); |
b9e5796b | 11342 | if (plt_load_toc) |
176a0d42 | 11343 | { |
b9e5796b | 11344 | if (PPC_HA (offset + 8 + 8 * plt_static_chain) != PPC_HA (offset)) |
c7131b65 | 11345 | { |
b9e5796b AM |
11346 | r[1].r_offset = r[0].r_offset + 4; |
11347 | r[1].r_info = ELF64_R_INFO (0, R_PPC64_TOC16); | |
11348 | r[1].r_addend = r[0].r_addend; | |
11349 | } | |
11350 | else | |
11351 | { | |
11352 | r[1].r_offset = r[0].r_offset + 8 + 8 * use_fake_dep; | |
11353 | r[1].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_DS); | |
11354 | r[1].r_addend = r[0].r_addend + 8 + 8 * plt_static_chain; | |
11355 | if (plt_static_chain) | |
11356 | { | |
11357 | r[2].r_offset = r[1].r_offset + 4; | |
11358 | r[2].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_DS); | |
11359 | r[2].r_addend = r[0].r_addend + 8; | |
11360 | } | |
c7131b65 | 11361 | } |
176a0d42 AM |
11362 | } |
11363 | } | |
7aba54da | 11364 | if (ALWAYS_EMIT_R2SAVE || stub_entry->type.r2save) |
a078d95a | 11365 | bfd_put_32 (obfd, STD_R2_0R1 + STK_TOC (htab), p), p += 4; |
71a39c98 | 11366 | bfd_put_32 (obfd, LD_R12_0R2 | PPC_LO (offset), p), p += 4; |
b9e5796b AM |
11367 | if (plt_load_toc |
11368 | && PPC_HA (offset + 8 + 8 * plt_static_chain) != PPC_HA (offset)) | |
ac2df442 AM |
11369 | { |
11370 | bfd_put_32 (obfd, ADDI_R2_R2 | PPC_LO (offset), p), p += 4; | |
11371 | offset = 0; | |
11372 | } | |
71a39c98 | 11373 | bfd_put_32 (obfd, MTCTR_R12, p), p += 4; |
b9e5796b | 11374 | if (plt_load_toc) |
794e51c0 | 11375 | { |
b9e5796b AM |
11376 | if (use_fake_dep) |
11377 | { | |
11378 | bfd_put_32 (obfd, XOR_R11_R12_R12, p), p += 4; | |
11379 | bfd_put_32 (obfd, ADD_R2_R2_R11, p), p += 4; | |
11380 | } | |
11381 | if (plt_static_chain) | |
11382 | bfd_put_32 (obfd, LD_R11_0R2 | PPC_LO (offset + 16), p), p += 4; | |
11383 | bfd_put_32 (obfd, LD_R2_0R2 | PPC_LO (offset + 8), p), p += 4; | |
794e51c0 | 11384 | } |
ac2df442 | 11385 | } |
b9e5796b | 11386 | if (plt_load_toc && plt_thread_safe && !use_fake_dep) |
794e51c0 AM |
11387 | { |
11388 | bfd_put_32 (obfd, CMPLDI_R2_0, p), p += 4; | |
11389 | bfd_put_32 (obfd, BNECTR_P4, p), p += 4; | |
22aa0c7e | 11390 | bfd_put_32 (obfd, B_DOT | (cmp_branch_off & 0x3fffffc), p), p += 4; |
794e51c0 AM |
11391 | } |
11392 | else | |
407aa07c | 11393 | bfd_put_32 (obfd, BCTR, p), p += 4; |
5d1634d7 AM |
11394 | return p; |
11395 | } | |
11396 | ||
a7f2871e AM |
11397 | /* Build a special .plt call stub for __tls_get_addr. */ |
11398 | ||
b9ca1af6 | 11399 | #define LD_R0_0R3 0xe8030000 |
a7f2871e AM |
11400 | #define LD_R12_0R3 0xe9830000 |
11401 | #define MR_R0_R3 0x7c601b78 | |
b9ca1af6 | 11402 | #define CMPDI_R0_0 0x2c200000 |
a7f2871e AM |
11403 | #define ADD_R3_R12_R13 0x7c6c6a14 |
11404 | #define BEQLR 0x4d820020 | |
11405 | #define MR_R3_R0 0x7c030378 | |
a7f2871e | 11406 | #define BCTRL 0x4e800421 |
a7f2871e | 11407 | |
29433886 AM |
11408 | static bfd_byte * |
11409 | build_tls_get_addr_head (struct ppc_link_hash_table *htab, | |
794e51c0 | 11410 | struct ppc_stub_hash_entry *stub_entry, |
29433886 | 11411 | bfd_byte *p) |
a7f2871e | 11412 | { |
e7d1c40c | 11413 | bfd *obfd = htab->params->stub_bfd; |
794e51c0 | 11414 | |
b9ca1af6 | 11415 | bfd_put_32 (obfd, LD_R0_0R3 + 0, p), p += 4; |
a7f2871e | 11416 | bfd_put_32 (obfd, LD_R12_0R3 + 8, p), p += 4; |
b9ca1af6 | 11417 | bfd_put_32 (obfd, CMPDI_R0_0, p), p += 4; |
a7f2871e | 11418 | bfd_put_32 (obfd, MR_R0_R3, p), p += 4; |
a7f2871e AM |
11419 | bfd_put_32 (obfd, ADD_R3_R12_R13, p), p += 4; |
11420 | bfd_put_32 (obfd, BEQLR, p), p += 4; | |
11421 | bfd_put_32 (obfd, MR_R3_R0, p), p += 4; | |
9e7028aa | 11422 | |
29433886 AM |
11423 | if (!htab->params->no_tls_get_addr_regsave) |
11424 | p = tls_get_addr_prologue (obfd, p, htab); | |
7aba54da | 11425 | else if (stub_entry->type.r2save) |
29433886 | 11426 | { |
9e7028aa AM |
11427 | bfd_put_32 (obfd, MFLR_R0, p); |
11428 | p += 4; | |
11429 | bfd_put_32 (obfd, STD_R0_0R1 + STK_LINKER (htab), p); | |
11430 | p += 4; | |
29433886 AM |
11431 | } |
11432 | return p; | |
11433 | } | |
9e7028aa | 11434 | |
29433886 AM |
11435 | static bfd_byte * |
11436 | build_tls_get_addr_tail (struct ppc_link_hash_table *htab, | |
11437 | struct ppc_stub_hash_entry *stub_entry, | |
11438 | bfd_byte *p, | |
11439 | bfd_byte *loc) | |
11440 | { | |
11441 | bfd *obfd = htab->params->stub_bfd; | |
11442 | ||
11443 | if (!htab->params->no_tls_get_addr_regsave) | |
11444 | { | |
11445 | bfd_put_32 (obfd, BCTRL, p - 4); | |
11446 | ||
7aba54da | 11447 | if (stub_entry->type.r2save) |
29433886 AM |
11448 | { |
11449 | bfd_put_32 (obfd, LD_R2_0R1 + STK_TOC (htab), p); | |
11450 | p += 4; | |
11451 | } | |
11452 | p = tls_get_addr_epilogue (obfd, p, htab); | |
11453 | } | |
7aba54da | 11454 | else if (stub_entry->type.r2save) |
29433886 | 11455 | { |
9e7028aa AM |
11456 | bfd_put_32 (obfd, BCTRL, p - 4); |
11457 | ||
11458 | bfd_put_32 (obfd, LD_R2_0R1 + STK_TOC (htab), p); | |
11459 | p += 4; | |
11460 | bfd_put_32 (obfd, LD_R0_0R1 + STK_LINKER (htab), p); | |
11461 | p += 4; | |
11462 | bfd_put_32 (obfd, MTLR_R0, p); | |
11463 | p += 4; | |
11464 | bfd_put_32 (obfd, BLR, p); | |
11465 | p += 4; | |
11466 | } | |
a7f2871e | 11467 | |
df136d64 AM |
11468 | if (htab->glink_eh_frame != NULL |
11469 | && htab->glink_eh_frame->size != 0) | |
11470 | { | |
11471 | bfd_byte *base, *eh; | |
df136d64 AM |
11472 | |
11473 | base = htab->glink_eh_frame->contents + stub_entry->group->eh_base + 17; | |
11474 | eh = base + stub_entry->group->eh_size; | |
29433886 AM |
11475 | |
11476 | if (!htab->params->no_tls_get_addr_regsave) | |
9e7028aa | 11477 | { |
29433886 AM |
11478 | unsigned int cfa_updt, delta, i; |
11479 | ||
9e7028aa AM |
11480 | /* After the bctrl, lr has been modified so we need to emit |
11481 | .eh_frame info saying the return address is on the stack. In | |
11482 | fact we must put the EH info at or before the call rather | |
11483 | than after it, because the EH info for a call needs to be | |
11484 | specified by that point. | |
11485 | See libgcc/unwind-dw2.c execute_cfa_program. | |
11486 | Any stack pointer update must be described immediately after | |
11487 | the instruction making the change, and since the stdu occurs | |
11488 | after saving regs we put all the reg saves and the cfa | |
11489 | change there. */ | |
11490 | cfa_updt = stub_entry->stub_offset + 18 * 4; | |
11491 | delta = cfa_updt - stub_entry->group->lr_restore; | |
11492 | stub_entry->group->lr_restore | |
11493 | = stub_entry->stub_offset + (p - loc) - 4; | |
11494 | eh = eh_advance (htab->elf.dynobj, eh, delta); | |
11495 | *eh++ = DW_CFA_def_cfa_offset; | |
11496 | if (htab->opd_abi) | |
11497 | { | |
11498 | *eh++ = 128; | |
11499 | *eh++ = 1; | |
11500 | } | |
11501 | else | |
11502 | *eh++ = 96; | |
11503 | *eh++ = DW_CFA_offset_extended_sf; | |
11504 | *eh++ = 65; | |
11505 | *eh++ = (-16 / 8) & 0x7f; | |
11506 | for (i = 4; i < 12; i++) | |
11507 | { | |
11508 | *eh++ = DW_CFA_offset + i; | |
11509 | *eh++ = (htab->opd_abi ? 13 : 12) - i; | |
11510 | } | |
11511 | *eh++ = (DW_CFA_advance_loc | |
11512 | + (stub_entry->group->lr_restore - 8 - cfa_updt) / 4); | |
11513 | *eh++ = DW_CFA_def_cfa_offset; | |
11514 | *eh++ = 0; | |
11515 | for (i = 4; i < 12; i++) | |
11516 | *eh++ = DW_CFA_restore + i; | |
11517 | *eh++ = DW_CFA_advance_loc + 2; | |
29433886 AM |
11518 | *eh++ = DW_CFA_restore_extended; |
11519 | *eh++ = 65; | |
11520 | stub_entry->group->eh_size = eh - base; | |
11521 | } | |
7aba54da | 11522 | else if (stub_entry->type.r2save) |
29433886 AM |
11523 | { |
11524 | unsigned int lr_used, delta; | |
11525 | ||
11526 | lr_used = stub_entry->stub_offset + (p - 20 - loc); | |
11527 | delta = lr_used - stub_entry->group->lr_restore; | |
11528 | stub_entry->group->lr_restore = lr_used + 16; | |
11529 | eh = eh_advance (htab->elf.dynobj, eh, delta); | |
11530 | *eh++ = DW_CFA_offset_extended_sf; | |
11531 | *eh++ = 65; | |
11532 | *eh++ = -(STK_LINKER (htab) / 8) & 0x7f; | |
11533 | *eh++ = DW_CFA_advance_loc + 4; | |
11534 | *eh++ = DW_CFA_restore_extended; | |
11535 | *eh++ = 65; | |
11536 | stub_entry->group->eh_size = eh - base; | |
9e7028aa | 11537 | } |
df136d64 | 11538 | } |
a7f2871e AM |
11539 | return p; |
11540 | } | |
11541 | ||
176a0d42 AM |
11542 | static Elf_Internal_Rela * |
11543 | get_relocs (asection *sec, int count) | |
11544 | { | |
11545 | Elf_Internal_Rela *relocs; | |
11546 | struct bfd_elf_section_data *elfsec_data; | |
11547 | ||
11548 | elfsec_data = elf_section_data (sec); | |
11549 | relocs = elfsec_data->relocs; | |
11550 | if (relocs == NULL) | |
11551 | { | |
11552 | bfd_size_type relsize; | |
11553 | relsize = sec->reloc_count * sizeof (*relocs); | |
11554 | relocs = bfd_alloc (sec->owner, relsize); | |
11555 | if (relocs == NULL) | |
11556 | return NULL; | |
11557 | elfsec_data->relocs = relocs; | |
d4730f92 BS |
11558 | elfsec_data->rela.hdr = bfd_zalloc (sec->owner, |
11559 | sizeof (Elf_Internal_Shdr)); | |
11560 | if (elfsec_data->rela.hdr == NULL) | |
11561 | return NULL; | |
11562 | elfsec_data->rela.hdr->sh_size = (sec->reloc_count | |
11563 | * sizeof (Elf64_External_Rela)); | |
11564 | elfsec_data->rela.hdr->sh_entsize = sizeof (Elf64_External_Rela); | |
176a0d42 AM |
11565 | sec->reloc_count = 0; |
11566 | } | |
11567 | relocs += sec->reloc_count; | |
11568 | sec->reloc_count += count; | |
11569 | return relocs; | |
11570 | } | |
11571 | ||
3d58e1fc AM |
11572 | /* Convert the relocs R[0] thru R[-NUM_REL+1], which are all no-symbol |
11573 | forms, to the equivalent relocs against the global symbol given by | |
11574 | STUB_ENTRY->H. */ | |
11575 | ||
0a1b45a2 | 11576 | static bool |
3d58e1fc AM |
11577 | use_global_in_relocs (struct ppc_link_hash_table *htab, |
11578 | struct ppc_stub_hash_entry *stub_entry, | |
11579 | Elf_Internal_Rela *r, unsigned int num_rel) | |
11580 | { | |
11581 | struct elf_link_hash_entry **hashes; | |
11582 | unsigned long symndx; | |
11583 | struct ppc_link_hash_entry *h; | |
11584 | bfd_vma symval; | |
11585 | ||
11586 | /* Relocs are always against symbols in their own object file. Fake | |
11587 | up global sym hashes for the stub bfd (which has no symbols). */ | |
11588 | hashes = elf_sym_hashes (htab->params->stub_bfd); | |
11589 | if (hashes == NULL) | |
11590 | { | |
11591 | bfd_size_type hsize; | |
11592 | ||
11593 | /* When called the first time, stub_globals will contain the | |
11594 | total number of symbols seen during stub sizing. After | |
11595 | allocating, stub_globals is used as an index to fill the | |
11596 | hashes array. */ | |
11597 | hsize = (htab->stub_globals + 1) * sizeof (*hashes); | |
11598 | hashes = bfd_zalloc (htab->params->stub_bfd, hsize); | |
11599 | if (hashes == NULL) | |
0a1b45a2 | 11600 | return false; |
3d58e1fc AM |
11601 | elf_sym_hashes (htab->params->stub_bfd) = hashes; |
11602 | htab->stub_globals = 1; | |
11603 | } | |
11604 | symndx = htab->stub_globals++; | |
11605 | h = stub_entry->h; | |
11606 | hashes[symndx] = &h->elf; | |
11607 | if (h->oh != NULL && h->oh->is_func) | |
11608 | h = ppc_follow_link (h->oh); | |
11609 | BFD_ASSERT (h->elf.root.type == bfd_link_hash_defined | |
11610 | || h->elf.root.type == bfd_link_hash_defweak); | |
ed7007c1 | 11611 | symval = defined_sym_val (&h->elf); |
3d58e1fc AM |
11612 | while (num_rel-- != 0) |
11613 | { | |
11614 | r->r_info = ELF64_R_INFO (symndx, ELF64_R_TYPE (r->r_info)); | |
11615 | if (h->elf.root.u.def.section != stub_entry->target_section) | |
11616 | { | |
11617 | /* H is an opd symbol. The addend must be zero, and the | |
11618 | branch reloc is the only one we can convert. */ | |
11619 | r->r_addend = 0; | |
11620 | break; | |
11621 | } | |
11622 | else | |
11623 | r->r_addend -= symval; | |
11624 | --r; | |
11625 | } | |
0a1b45a2 | 11626 | return true; |
3d58e1fc AM |
11627 | } |
11628 | ||
aa374f67 | 11629 | static bfd_vma |
25f53a85 | 11630 | get_r2off (struct bfd_link_info *info, |
aa374f67 AM |
11631 | struct ppc_stub_hash_entry *stub_entry) |
11632 | { | |
25f53a85 | 11633 | struct ppc_link_hash_table *htab = ppc_hash_table (info); |
6f20ed8a | 11634 | bfd_vma r2off = htab->sec_info[stub_entry->target_section->id].toc_off; |
aa374f67 AM |
11635 | |
11636 | if (r2off == 0) | |
11637 | { | |
11638 | /* Support linking -R objects. Get the toc pointer from the | |
11639 | opd entry. */ | |
11640 | char buf[8]; | |
b9e5796b AM |
11641 | if (!htab->opd_abi) |
11642 | return r2off; | |
aa374f67 AM |
11643 | asection *opd = stub_entry->h->elf.root.u.def.section; |
11644 | bfd_vma opd_off = stub_entry->h->elf.root.u.def.value; | |
11645 | ||
11646 | if (strcmp (opd->name, ".opd") != 0 | |
11647 | || opd->reloc_count != 0) | |
11648 | { | |
2cdcc330 AM |
11649 | info->callbacks->einfo |
11650 | (_("%P: cannot find opd entry toc for `%pT'\n"), | |
11651 | stub_entry->h->elf.root.root.string); | |
aa374f67 | 11652 | bfd_set_error (bfd_error_bad_value); |
a7c49797 | 11653 | return (bfd_vma) -1; |
aa374f67 AM |
11654 | } |
11655 | if (!bfd_get_section_contents (opd->owner, opd, buf, opd_off + 8, 8)) | |
a7c49797 | 11656 | return (bfd_vma) -1; |
aa374f67 | 11657 | r2off = bfd_get_64 (opd->owner, buf); |
25f53a85 | 11658 | r2off -= elf_gp (info->output_bfd); |
aa374f67 | 11659 | } |
6f20ed8a | 11660 | r2off -= htab->sec_info[stub_entry->group->link_sec->id].toc_off; |
aa374f67 AM |
11661 | return r2off; |
11662 | } | |
11663 | ||
46439c90 AM |
11664 | /* Debug dump. */ |
11665 | ||
11666 | static void | |
ecc741e6 AM |
11667 | dump_stub (const char *header, |
11668 | struct ppc_stub_hash_entry *stub_entry, | |
11669 | size_t end_offset) | |
46439c90 | 11670 | { |
ecc741e6 AM |
11671 | const char *t1, *t2, *t3; |
11672 | switch (stub_entry->type.main) | |
46439c90 | 11673 | { |
ecc741e6 AM |
11674 | case ppc_stub_none: t1 = "none"; break; |
11675 | case ppc_stub_long_branch: t1 = "long_branch"; break; | |
11676 | case ppc_stub_plt_branch: t1 = "plt_branch"; break; | |
11677 | case ppc_stub_plt_call: t1 = "plt_call"; break; | |
11678 | case ppc_stub_global_entry: t1 = "global_entry"; break; | |
11679 | case ppc_stub_save_res: t1 = "save_res"; break; | |
11680 | default: t1 = "???"; break; | |
11681 | } | |
11682 | switch (stub_entry->type.sub) | |
11683 | { | |
11684 | case ppc_stub_toc: t2 = "toc"; break; | |
11685 | case ppc_stub_notoc: t2 = "notoc"; break; | |
11686 | case ppc_stub_p9notoc: t2 = "p9notoc"; break; | |
11687 | default: t2 = "???"; break; | |
11688 | } | |
11689 | t3 = stub_entry->type.r2save ? "r2save" : ""; | |
11690 | fprintf (stderr, "%s id = %u type = %s:%s:%s\n", | |
11691 | header, stub_entry->id, t1, t2, t3); | |
11692 | fprintf (stderr, "name = %s\n", stub_entry->root.string); | |
b8281767 | 11693 | fprintf (stderr, "offset = 0x%" PRIx64 ":", stub_entry->stub_offset); |
ecc741e6 AM |
11694 | for (size_t i = stub_entry->stub_offset; i < end_offset; i += 4) |
11695 | { | |
11696 | asection *stub_sec = stub_entry->group->stub_sec; | |
11697 | uint32_t *p = (uint32_t *) (stub_sec->contents + i); | |
11698 | fprintf (stderr, " %08x", (uint32_t) bfd_get_32 (stub_sec->owner, p)); | |
46439c90 | 11699 | } |
ecc741e6 | 11700 | fprintf (stderr, "\n"); |
46439c90 AM |
11701 | } |
11702 | ||
0a1b45a2 | 11703 | static bool |
4ce794b7 | 11704 | ppc_build_one_stub (struct bfd_hash_entry *gen_entry, void *in_arg) |
5d1634d7 | 11705 | { |
721956f4 AM |
11706 | struct ppc_stub_hash_entry *stub_entry; |
11707 | struct ppc_branch_hash_entry *br_entry; | |
5d1634d7 AM |
11708 | struct bfd_link_info *info; |
11709 | struct ppc_link_hash_table *htab; | |
29433886 | 11710 | bfd *obfd; |
721956f4 | 11711 | bfd_byte *loc; |
3d58e1fc | 11712 | bfd_byte *p, *relp; |
1aa42141 | 11713 | bfd_vma targ, off; |
176a0d42 | 11714 | Elf_Internal_Rela *r; |
e054468f | 11715 | asection *plt; |
3d58e1fc | 11716 | int num_rel; |
04bdff6a | 11717 | int odd; |
0a1b45a2 | 11718 | bool is_tga; |
5d1634d7 | 11719 | |
721956f4 AM |
11720 | /* Massage our args to the form they really have. */ |
11721 | stub_entry = (struct ppc_stub_hash_entry *) gen_entry; | |
4ce794b7 | 11722 | info = in_arg; |
5d1634d7 | 11723 | |
5d1634d7 | 11724 | htab = ppc_hash_table (info); |
4dfe6ac6 | 11725 | if (htab == NULL) |
0a1b45a2 | 11726 | return false; |
5d1634d7 | 11727 | |
ecc741e6 AM |
11728 | struct _ppc64_elf_section_data *esd |
11729 | = ppc64_elf_section_data (stub_entry->group->stub_sec); | |
11730 | ++htab->stub_id; | |
11731 | if (stub_entry->id != htab->stub_id | |
570e911f AM |
11732 | || (stub_entry->type.main != ppc_stub_save_res |
11733 | && stub_entry->stub_offset < stub_entry->group->stub_sec->size)) | |
46439c90 AM |
11734 | { |
11735 | BFD_ASSERT (0); | |
ecc741e6 AM |
11736 | if (stub_entry->id != htab->stub_id) |
11737 | fprintf (stderr, "Expected id %u, got %u\n", | |
11738 | htab->stub_id, stub_entry->id); | |
11739 | if (stub_entry->stub_offset < stub_entry->group->stub_sec->size) | |
b8281767 AM |
11740 | fprintf (stderr, "Expected offset >= %" PRIx64 ", got %" |
11741 | PRIx64 "\n", stub_entry->group->stub_sec->size, | |
ecc741e6 AM |
11742 | stub_entry->stub_offset); |
11743 | if (esd->sec_type == sec_stub) | |
11744 | dump_stub ("Previous:", esd->u.last_ent, stub_entry->stub_offset); | |
11745 | dump_stub ("Current:", stub_entry, 0); | |
46439c90 | 11746 | } |
ecc741e6 AM |
11747 | if (esd->sec_type == sec_normal) |
11748 | esd->sec_type = sec_stub; | |
11749 | if (esd->sec_type == sec_stub) | |
11750 | esd->u.last_ent = stub_entry; | |
6f20ed8a | 11751 | loc = stub_entry->group->stub_sec->contents + stub_entry->stub_offset; |
721956f4 | 11752 | |
7aba54da AM |
11753 | htab->stub_count[stub_entry->type.main - 1] += 1; |
11754 | if (stub_entry->type.main == ppc_stub_long_branch | |
11755 | && stub_entry->type.sub == ppc_stub_toc) | |
5d1634d7 | 11756 | { |
721956f4 | 11757 | /* Branches are relative. This is where we are going to. */ |
1aa42141 | 11758 | targ = (stub_entry->target_value |
6911b7dc AM |
11759 | + stub_entry->target_section->output_offset |
11760 | + stub_entry->target_section->output_section->vma); | |
1aa42141 | 11761 | targ += PPC64_LOCAL_ENTRY_OFFSET (stub_entry->other); |
5d1634d7 | 11762 | |
721956f4 | 11763 | /* And this is where we are coming from. */ |
1aa42141 AM |
11764 | off = (stub_entry->stub_offset |
11765 | + stub_entry->group->stub_sec->output_offset | |
11766 | + stub_entry->group->stub_sec->output_section->vma); | |
11767 | off = targ - off; | |
e86ce104 | 11768 | |
9e390558 | 11769 | p = loc; |
29433886 | 11770 | obfd = htab->params->stub_bfd; |
7aba54da | 11771 | if (stub_entry->type.r2save) |
ad8e1ba5 | 11772 | { |
25f53a85 | 11773 | bfd_vma r2off = get_r2off (info, stub_entry); |
ad8e1ba5 | 11774 | |
a7c49797 | 11775 | if (r2off == (bfd_vma) -1) |
aa374f67 | 11776 | { |
0a1b45a2 AM |
11777 | htab->stub_error = true; |
11778 | return false; | |
aa374f67 | 11779 | } |
29433886 | 11780 | bfd_put_32 (obfd, STD_R2_0R1 + STK_TOC (htab), p); |
9e390558 | 11781 | p += 4; |
ac2df442 AM |
11782 | if (PPC_HA (r2off) != 0) |
11783 | { | |
29433886 | 11784 | bfd_put_32 (obfd, ADDIS_R2_R2 | PPC_HA (r2off), p); |
9e390558 | 11785 | p += 4; |
a7c49797 AM |
11786 | } |
11787 | if (PPC_LO (r2off) != 0) | |
11788 | { | |
29433886 | 11789 | bfd_put_32 (obfd, ADDI_R2_R2 | PPC_LO (r2off), p); |
9e390558 | 11790 | p += 4; |
ac2df442 | 11791 | } |
9e390558 | 11792 | off -= p - loc; |
ad8e1ba5 | 11793 | } |
29433886 | 11794 | bfd_put_32 (obfd, B_DOT | (off & 0x3fffffc), p); |
9e390558 | 11795 | p += 4; |
ad8e1ba5 | 11796 | |
5c3dead3 AM |
11797 | if (off + (1 << 25) >= (bfd_vma) (1 << 26)) |
11798 | { | |
cf97bcb0 AM |
11799 | _bfd_error_handler |
11800 | (_("long branch stub `%s' offset overflow"), | |
bc30df16 | 11801 | stub_entry->root.string); |
0a1b45a2 AM |
11802 | htab->stub_error = true; |
11803 | return false; | |
5c3dead3 | 11804 | } |
ee75fd95 AM |
11805 | |
11806 | if (info->emitrelocations) | |
11807 | { | |
6f20ed8a | 11808 | r = get_relocs (stub_entry->group->stub_sec, 1); |
176a0d42 | 11809 | if (r == NULL) |
0a1b45a2 | 11810 | return false; |
9e390558 | 11811 | r->r_offset = p - 4 - stub_entry->group->stub_sec->contents; |
ee75fd95 | 11812 | r->r_info = ELF64_R_INFO (0, R_PPC64_REL24); |
1aa42141 | 11813 | r->r_addend = targ; |
3d58e1fc AM |
11814 | if (stub_entry->h != NULL |
11815 | && !use_global_in_relocs (htab, stub_entry, r, 1)) | |
0a1b45a2 | 11816 | return false; |
ee75fd95 | 11817 | } |
7aba54da AM |
11818 | } |
11819 | else if (stub_entry->type.main == ppc_stub_plt_branch | |
11820 | && stub_entry->type.sub == ppc_stub_toc) | |
11821 | { | |
721956f4 AM |
11822 | br_entry = ppc_branch_hash_lookup (&htab->branch_hash_table, |
11823 | stub_entry->root.string + 9, | |
0a1b45a2 | 11824 | false, false); |
721956f4 AM |
11825 | if (br_entry == NULL) |
11826 | { | |
cf97bcb0 AM |
11827 | _bfd_error_handler (_("can't find branch stub `%s'"), |
11828 | stub_entry->root.string); | |
0a1b45a2 AM |
11829 | htab->stub_error = true; |
11830 | return false; | |
721956f4 AM |
11831 | } |
11832 | ||
1aa42141 | 11833 | targ = (stub_entry->target_value |
176a0d42 AM |
11834 | + stub_entry->target_section->output_offset |
11835 | + stub_entry->target_section->output_section->vma); | |
7aba54da | 11836 | if (!stub_entry->type.r2save) |
1aa42141 | 11837 | targ += PPC64_LOCAL_ENTRY_OFFSET (stub_entry->other); |
721956f4 | 11838 | |
1aa42141 | 11839 | bfd_put_64 (htab->brlt->owner, targ, |
4ce794b7 | 11840 | htab->brlt->contents + br_entry->offset); |
721956f4 | 11841 | |
f94498ff | 11842 | if (br_entry->iter == htab->stub_iteration) |
721956f4 | 11843 | { |
f94498ff | 11844 | br_entry->iter = 0; |
84f5d08e | 11845 | |
1657026c | 11846 | if (htab->relbrlt != NULL && !info->enable_dt_relr) |
84f5d08e | 11847 | { |
f94498ff AM |
11848 | /* Create a reloc for the branch lookup table entry. */ |
11849 | Elf_Internal_Rela rela; | |
11850 | bfd_byte *rl; | |
11851 | ||
11852 | rela.r_offset = (br_entry->offset | |
11853 | + htab->brlt->output_offset | |
11854 | + htab->brlt->output_section->vma); | |
11855 | rela.r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE); | |
1aa42141 | 11856 | rela.r_addend = targ; |
f94498ff AM |
11857 | |
11858 | rl = htab->relbrlt->contents; | |
11859 | rl += (htab->relbrlt->reloc_count++ | |
11860 | * sizeof (Elf64_External_Rela)); | |
11861 | bfd_elf64_swap_reloca_out (htab->relbrlt->owner, &rela, rl); | |
11862 | } | |
11863 | else if (info->emitrelocations) | |
11864 | { | |
176a0d42 AM |
11865 | r = get_relocs (htab->brlt, 1); |
11866 | if (r == NULL) | |
0a1b45a2 | 11867 | return false; |
176a0d42 AM |
11868 | /* brlt, being SEC_LINKER_CREATED does not go through the |
11869 | normal reloc processing. Symbols and offsets are not | |
11870 | translated from input file to output file form, so | |
11871 | set up the offset per the output file. */ | |
f94498ff AM |
11872 | r->r_offset = (br_entry->offset |
11873 | + htab->brlt->output_offset | |
11874 | + htab->brlt->output_section->vma); | |
11875 | r->r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE); | |
1aa42141 | 11876 | r->r_addend = targ; |
84f5d08e | 11877 | } |
84f5d08e | 11878 | } |
721956f4 | 11879 | |
1aa42141 | 11880 | targ = (br_entry->offset |
176a0d42 AM |
11881 | + htab->brlt->output_offset |
11882 | + htab->brlt->output_section->vma); | |
11883 | ||
1aa42141 AM |
11884 | off = (elf_gp (info->output_bfd) |
11885 | + htab->sec_info[stub_entry->group->link_sec->id].toc_off); | |
11886 | off = targ - off; | |
721956f4 | 11887 | |
ad8e1ba5 | 11888 | if (off + 0x80008000 > 0xffffffff || (off & 7) != 0) |
5d1634d7 | 11889 | { |
25f53a85 | 11890 | info->callbacks->einfo |
c1c8c1ef | 11891 | (_("%P: linkage table error against `%pT'\n"), |
721956f4 | 11892 | stub_entry->root.string); |
5d1634d7 | 11893 | bfd_set_error (bfd_error_bad_value); |
0a1b45a2 AM |
11894 | htab->stub_error = true; |
11895 | return false; | |
5d1634d7 | 11896 | } |
41bd81ab | 11897 | |
176a0d42 AM |
11898 | if (info->emitrelocations) |
11899 | { | |
6f20ed8a | 11900 | r = get_relocs (stub_entry->group->stub_sec, 1 + (PPC_HA (off) != 0)); |
176a0d42 | 11901 | if (r == NULL) |
0a1b45a2 | 11902 | return false; |
6f20ed8a | 11903 | r[0].r_offset = loc - stub_entry->group->stub_sec->contents; |
7cfbafbc AM |
11904 | if (bfd_big_endian (info->output_bfd)) |
11905 | r[0].r_offset += 2; | |
7aba54da | 11906 | if (stub_entry->type.r2save) |
176a0d42 AM |
11907 | r[0].r_offset += 4; |
11908 | r[0].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_DS); | |
1aa42141 | 11909 | r[0].r_addend = targ; |
176a0d42 AM |
11910 | if (PPC_HA (off) != 0) |
11911 | { | |
11912 | r[0].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_HA); | |
11913 | r[1].r_offset = r[0].r_offset + 4; | |
11914 | r[1].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS); | |
11915 | r[1].r_addend = r[0].r_addend; | |
11916 | } | |
11917 | } | |
11918 | ||
9e390558 | 11919 | p = loc; |
29433886 | 11920 | obfd = htab->params->stub_bfd; |
7aba54da | 11921 | if (!stub_entry->type.r2save) |
ad8e1ba5 | 11922 | { |
176a0d42 | 11923 | if (PPC_HA (off) != 0) |
ac2df442 | 11924 | { |
29433886 | 11925 | bfd_put_32 (obfd, ADDIS_R12_R2 | PPC_HA (off), p); |
9e390558 | 11926 | p += 4; |
29433886 | 11927 | bfd_put_32 (obfd, LD_R12_0R12 | PPC_LO (off), p); |
ac2df442 AM |
11928 | } |
11929 | else | |
29433886 | 11930 | bfd_put_32 (obfd, LD_R12_0R2 | PPC_LO (off), p); |
ad8e1ba5 AM |
11931 | } |
11932 | else | |
11933 | { | |
25f53a85 | 11934 | bfd_vma r2off = get_r2off (info, stub_entry); |
aa374f67 | 11935 | |
a7c49797 | 11936 | if (r2off == (bfd_vma) -1) |
aa374f67 | 11937 | { |
0a1b45a2 AM |
11938 | htab->stub_error = true; |
11939 | return false; | |
aa374f67 | 11940 | } |
ad8e1ba5 | 11941 | |
29433886 | 11942 | bfd_put_32 (obfd, STD_R2_0R1 + STK_TOC (htab), p); |
9e390558 | 11943 | p += 4; |
176a0d42 | 11944 | if (PPC_HA (off) != 0) |
ac2df442 | 11945 | { |
29433886 | 11946 | bfd_put_32 (obfd, ADDIS_R12_R2 | PPC_HA (off), p); |
9e390558 | 11947 | p += 4; |
29433886 | 11948 | bfd_put_32 (obfd, LD_R12_0R12 | PPC_LO (off), p); |
ac2df442 AM |
11949 | } |
11950 | else | |
29433886 | 11951 | bfd_put_32 (obfd, LD_R12_0R2 | PPC_LO (off), p); |
ac2df442 AM |
11952 | |
11953 | if (PPC_HA (r2off) != 0) | |
11954 | { | |
9e390558 | 11955 | p += 4; |
29433886 | 11956 | bfd_put_32 (obfd, ADDIS_R2_R2 | PPC_HA (r2off), p); |
00f412ee AM |
11957 | } |
11958 | if (PPC_LO (r2off) != 0) | |
11959 | { | |
9e390558 | 11960 | p += 4; |
29433886 | 11961 | bfd_put_32 (obfd, ADDI_R2_R2 | PPC_LO (r2off), p); |
ac2df442 | 11962 | } |
ad8e1ba5 | 11963 | } |
9e390558 | 11964 | p += 4; |
29433886 | 11965 | bfd_put_32 (obfd, MTCTR_R12, p); |
9e390558 | 11966 | p += 4; |
29433886 | 11967 | bfd_put_32 (obfd, BCTR, p); |
407aa07c | 11968 | p += 4; |
7aba54da AM |
11969 | } |
11970 | else if (stub_entry->type.sub >= ppc_stub_notoc) | |
11971 | { | |
11972 | bool is_plt = stub_entry->type.main == ppc_stub_plt_call; | |
05d0e962 | 11973 | p = loc; |
f891966f | 11974 | off = (stub_entry->stub_offset |
05d0e962 AM |
11975 | + stub_entry->group->stub_sec->output_offset |
11976 | + stub_entry->group->stub_sec->output_section->vma); | |
29433886 | 11977 | obfd = htab->params->stub_bfd; |
7aba54da | 11978 | is_tga = (is_plt |
12cf8b93 | 11979 | && stub_entry->h != NULL |
29433886 AM |
11980 | && is_tls_get_addr (&stub_entry->h->elf, htab) |
11981 | && htab->params->tls_get_addr_opt); | |
11982 | if (is_tga) | |
11983 | { | |
11984 | p = build_tls_get_addr_head (htab, stub_entry, p); | |
11985 | off += p - loc; | |
11986 | } | |
7aba54da | 11987 | if (stub_entry->type.r2save) |
05d0e962 AM |
11988 | { |
11989 | off += 4; | |
29433886 | 11990 | bfd_put_32 (obfd, STD_R2_0R1 + STK_TOC (htab), p); |
05d0e962 AM |
11991 | p += 4; |
11992 | } | |
7aba54da | 11993 | if (is_plt) |
05d0e962 AM |
11994 | { |
11995 | targ = stub_entry->plt_ent->plt.offset & ~1; | |
11996 | if (targ >= (bfd_vma) -2) | |
11997 | abort (); | |
11998 | ||
11999 | plt = htab->elf.splt; | |
30845f11 | 12000 | if (use_local_plt (info, elf_hash_entry (stub_entry->h))) |
05d0e962 AM |
12001 | { |
12002 | if (stub_entry->symtype == STT_GNU_IFUNC) | |
12003 | plt = htab->elf.iplt; | |
12004 | else | |
12005 | plt = htab->pltlocal; | |
12006 | } | |
12007 | targ += plt->output_offset + plt->output_section->vma; | |
12008 | } | |
12009 | else | |
12010 | targ = (stub_entry->target_value | |
12011 | + stub_entry->target_section->output_offset | |
12012 | + stub_entry->target_section->output_section->vma); | |
04bdff6a | 12013 | odd = off & 4; |
05d0e962 | 12014 | off = targ - off; |
f891966f | 12015 | |
3d58e1fc AM |
12016 | relp = p; |
12017 | num_rel = 0; | |
7aba54da AM |
12018 | if (stub_entry->type.sub == ppc_stub_notoc) |
12019 | p = build_power10_offset (obfd, p, off, odd, is_plt); | |
04bdff6a AM |
12020 | else |
12021 | { | |
29433886 AM |
12022 | if (htab->glink_eh_frame != NULL |
12023 | && htab->glink_eh_frame->size != 0) | |
12024 | { | |
12025 | bfd_byte *base, *eh; | |
12026 | unsigned int lr_used, delta; | |
12027 | ||
12028 | base = (htab->glink_eh_frame->contents | |
12029 | + stub_entry->group->eh_base + 17); | |
12030 | eh = base + stub_entry->group->eh_size; | |
12031 | lr_used = stub_entry->stub_offset + (p - loc) + 8; | |
12032 | delta = lr_used - stub_entry->group->lr_restore; | |
12033 | stub_entry->group->lr_restore = lr_used + 8; | |
12034 | eh = eh_advance (htab->elf.dynobj, eh, delta); | |
12035 | *eh++ = DW_CFA_register; | |
12036 | *eh++ = 65; | |
12037 | *eh++ = 12; | |
12038 | *eh++ = DW_CFA_advance_loc + 2; | |
12039 | *eh++ = DW_CFA_restore_extended; | |
12040 | *eh++ = 65; | |
12041 | stub_entry->group->eh_size = eh - base; | |
12042 | } | |
12043 | ||
04bdff6a AM |
12044 | /* The notoc stubs calculate their target (either a PLT entry or |
12045 | the global entry point of a function) relative to the PC | |
12046 | returned by the "bcl" two instructions past the start of the | |
12047 | sequence emitted by build_offset. The offset is therefore 8 | |
12048 | less than calculated from the start of the sequence. */ | |
12049 | off -= 8; | |
7aba54da | 12050 | p = build_offset (obfd, p, off, is_plt); |
04bdff6a AM |
12051 | } |
12052 | ||
7aba54da | 12053 | if (stub_entry->type.main == ppc_stub_long_branch) |
05d0e962 | 12054 | { |
f891966f | 12055 | bfd_vma from; |
3d58e1fc | 12056 | num_rel = 1; |
f891966f AM |
12057 | from = (stub_entry->stub_offset |
12058 | + stub_entry->group->stub_sec->output_offset | |
12059 | + stub_entry->group->stub_sec->output_section->vma | |
12060 | + (p - loc)); | |
29433886 | 12061 | bfd_put_32 (obfd, B_DOT | ((targ - from) & 0x3fffffc), p); |
05d0e962 AM |
12062 | } |
12063 | else | |
12064 | { | |
29433886 | 12065 | bfd_put_32 (obfd, MTCTR_R12, p); |
05d0e962 | 12066 | p += 4; |
29433886 | 12067 | bfd_put_32 (obfd, BCTR, p); |
05d0e962 AM |
12068 | } |
12069 | p += 4; | |
df136d64 | 12070 | |
29433886 AM |
12071 | if (is_tga) |
12072 | p = build_tls_get_addr_tail (htab, stub_entry, p, loc); | |
12073 | ||
3d58e1fc AM |
12074 | if (info->emitrelocations) |
12075 | { | |
04bdff6a | 12076 | bfd_vma roff = relp - stub_entry->group->stub_sec->contents; |
7aba54da | 12077 | if (stub_entry->type.sub == ppc_stub_notoc) |
7c1f4227 | 12078 | num_rel += num_relocs_for_power10_offset (off, odd); |
04bdff6a AM |
12079 | else |
12080 | { | |
12081 | num_rel += num_relocs_for_offset (off); | |
12082 | roff += 16; | |
12083 | } | |
3d58e1fc AM |
12084 | r = get_relocs (stub_entry->group->stub_sec, num_rel); |
12085 | if (r == NULL) | |
0a1b45a2 | 12086 | return false; |
7aba54da | 12087 | if (stub_entry->type.sub == ppc_stub_notoc) |
7c1f4227 | 12088 | r = emit_relocs_for_power10_offset (info, r, roff, targ, off, odd); |
04bdff6a AM |
12089 | else |
12090 | r = emit_relocs_for_offset (info, r, roff, targ, off); | |
7aba54da | 12091 | if (stub_entry->type.main == ppc_stub_long_branch) |
3d58e1fc AM |
12092 | { |
12093 | ++r; | |
12094 | roff = p - 4 - stub_entry->group->stub_sec->contents; | |
12095 | r->r_offset = roff; | |
12096 | r->r_info = ELF64_R_INFO (0, R_PPC64_REL24); | |
12097 | r->r_addend = targ; | |
12098 | if (stub_entry->h != NULL | |
12099 | && !use_global_in_relocs (htab, stub_entry, r, num_rel)) | |
0a1b45a2 | 12100 | return false; |
3d58e1fc AM |
12101 | } |
12102 | } | |
7aba54da AM |
12103 | } |
12104 | else if (stub_entry->type.main == ppc_stub_plt_call) | |
12105 | { | |
e054468f | 12106 | if (stub_entry->h != NULL |
b31867b6 AM |
12107 | && stub_entry->h->is_func_descriptor |
12108 | && stub_entry->h->oh != NULL) | |
c862ae31 | 12109 | { |
b31867b6 AM |
12110 | struct ppc_link_hash_entry *fh = ppc_follow_link (stub_entry->h->oh); |
12111 | ||
12112 | /* If the old-ABI "dot-symbol" is undefined make it weak so | |
6f20ed8a | 12113 | we don't get a link error from RELOC_FOR_GLOBAL_SYMBOL. */ |
8c5b4e52 AM |
12114 | if (fh->elf.root.type == bfd_link_hash_undefined |
12115 | && (stub_entry->h->elf.root.type == bfd_link_hash_defined | |
12116 | || stub_entry->h->elf.root.type == bfd_link_hash_defweak)) | |
b31867b6 | 12117 | fh->elf.root.type = bfd_link_hash_undefweak; |
c862ae31 AM |
12118 | } |
12119 | ||
721956f4 | 12120 | /* Now build the stub. */ |
1aa42141 AM |
12121 | targ = stub_entry->plt_ent->plt.offset & ~1; |
12122 | if (targ >= (bfd_vma) -2) | |
721956f4 AM |
12123 | abort (); |
12124 | ||
33e44f2e | 12125 | plt = htab->elf.splt; |
30845f11 | 12126 | if (use_local_plt (info, elf_hash_entry (stub_entry->h))) |
2d7ad24e AM |
12127 | { |
12128 | if (stub_entry->symtype == STT_GNU_IFUNC) | |
12129 | plt = htab->elf.iplt; | |
12130 | else | |
12131 | plt = htab->pltlocal; | |
12132 | } | |
1aa42141 | 12133 | targ += plt->output_offset + plt->output_section->vma; |
e054468f | 12134 | |
1aa42141 AM |
12135 | off = (elf_gp (info->output_bfd) |
12136 | + htab->sec_info[stub_entry->group->link_sec->id].toc_off); | |
12137 | off = targ - off; | |
721956f4 | 12138 | |
ad8e1ba5 | 12139 | if (off + 0x80008000 > 0xffffffff || (off & 7) != 0) |
721956f4 | 12140 | { |
25f53a85 | 12141 | info->callbacks->einfo |
695344c0 | 12142 | /* xgettext:c-format */ |
c1c8c1ef | 12143 | (_("%P: linkage table error against `%pT'\n"), |
e054468f AM |
12144 | stub_entry->h != NULL |
12145 | ? stub_entry->h->elf.root.root.string | |
12146 | : "<local sym>"); | |
721956f4 | 12147 | bfd_set_error (bfd_error_bad_value); |
0a1b45a2 AM |
12148 | htab->stub_error = true; |
12149 | return false; | |
721956f4 AM |
12150 | } |
12151 | ||
176a0d42 AM |
12152 | r = NULL; |
12153 | if (info->emitrelocations) | |
12154 | { | |
6f20ed8a | 12155 | r = get_relocs (stub_entry->group->stub_sec, |
3ba720c7 AM |
12156 | ((PPC_HA (off) != 0) |
12157 | + (htab->opd_abi | |
e7d1c40c | 12158 | ? 2 + (htab->params->plt_static_chain |
3ba720c7 AM |
12159 | && PPC_HA (off + 16) == PPC_HA (off)) |
12160 | : 1))); | |
176a0d42 | 12161 | if (r == NULL) |
0a1b45a2 | 12162 | return false; |
6f20ed8a | 12163 | r[0].r_offset = loc - stub_entry->group->stub_sec->contents; |
7cfbafbc AM |
12164 | if (bfd_big_endian (info->output_bfd)) |
12165 | r[0].r_offset += 2; | |
1aa42141 | 12166 | r[0].r_addend = targ; |
176a0d42 | 12167 | } |
29433886 AM |
12168 | p = loc; |
12169 | obfd = htab->params->stub_bfd; | |
12170 | is_tga = (stub_entry->h != NULL | |
12171 | && is_tls_get_addr (&stub_entry->h->elf, htab) | |
12172 | && htab->params->tls_get_addr_opt); | |
12173 | if (is_tga) | |
12174 | { | |
12175 | p = build_tls_get_addr_head (htab, stub_entry, p); | |
12176 | if (r != NULL) | |
12177 | r[0].r_offset += p - loc; | |
12178 | } | |
12179 | p = build_plt_stub (htab, stub_entry, p, off, r); | |
12180 | if (is_tga) | |
12181 | p = build_tls_get_addr_tail (htab, stub_entry, p, loc); | |
7aba54da AM |
12182 | } |
12183 | else if (stub_entry->type.main == ppc_stub_save_res) | |
12184 | return true; | |
12185 | else | |
12186 | { | |
721956f4 | 12187 | BFD_FAIL (); |
0a1b45a2 | 12188 | return false; |
721956f4 AM |
12189 | } |
12190 | ||
1aa42141 | 12191 | stub_entry->group->stub_sec->size = stub_entry->stub_offset + (p - loc); |
97b639ba | 12192 | |
e7d1c40c | 12193 | if (htab->params->emit_stub_syms) |
97b639ba AM |
12194 | { |
12195 | struct elf_link_hash_entry *h; | |
ee75fd95 AM |
12196 | size_t len1, len2; |
12197 | char *name; | |
12198 | const char *const stub_str[] = { "long_branch", | |
05d0e962 | 12199 | "plt_branch", |
ee75fd95 AM |
12200 | "plt_call" }; |
12201 | ||
7aba54da | 12202 | len1 = strlen (stub_str[stub_entry->type.main - 1]); |
ee75fd95 AM |
12203 | len2 = strlen (stub_entry->root.string); |
12204 | name = bfd_malloc (len1 + len2 + 2); | |
12205 | if (name == NULL) | |
0a1b45a2 | 12206 | return false; |
ee75fd95 | 12207 | memcpy (name, stub_entry->root.string, 9); |
7aba54da | 12208 | memcpy (name + 9, stub_str[stub_entry->type.main - 1], len1); |
ee75fd95 | 12209 | memcpy (name + len1 + 9, stub_entry->root.string + 8, len2 - 8 + 1); |
0a1b45a2 | 12210 | h = elf_link_hash_lookup (&htab->elf, name, true, false, false); |
97b639ba | 12211 | if (h == NULL) |
0a1b45a2 | 12212 | return false; |
97b639ba AM |
12213 | if (h->root.type == bfd_link_hash_new) |
12214 | { | |
12215 | h->root.type = bfd_link_hash_defined; | |
6f20ed8a | 12216 | h->root.u.def.section = stub_entry->group->stub_sec; |
97b639ba | 12217 | h->root.u.def.value = stub_entry->stub_offset; |
f5385ebf AM |
12218 | h->ref_regular = 1; |
12219 | h->def_regular = 1; | |
12220 | h->ref_regular_nonweak = 1; | |
12221 | h->forced_local = 1; | |
12222 | h->non_elf = 0; | |
2ec55de3 | 12223 | h->root.linker_def = 1; |
97b639ba AM |
12224 | } |
12225 | } | |
12226 | ||
0a1b45a2 | 12227 | return true; |
721956f4 AM |
12228 | } |
12229 | ||
12230 | /* As above, but don't actually build the stub. Just bump offset so | |
12231 | we know stub section sizes, and select plt_branch stubs where | |
12232 | long_branch stubs won't do. */ | |
12233 | ||
0a1b45a2 | 12234 | static bool |
4ce794b7 | 12235 | ppc_size_one_stub (struct bfd_hash_entry *gen_entry, void *in_arg) |
721956f4 AM |
12236 | { |
12237 | struct ppc_stub_hash_entry *stub_entry; | |
63bc6f6c | 12238 | struct bfd_link_info *info; |
721956f4 | 12239 | struct ppc_link_hash_table *htab; |
f891966f AM |
12240 | asection *plt; |
12241 | bfd_vma targ, off, r2off; | |
0f0d9373 | 12242 | unsigned int size, pad, extra, lr_used, delta, odd; |
0441f94f | 12243 | bfd_vma stub_offset; |
721956f4 AM |
12244 | |
12245 | /* Massage our args to the form they really have. */ | |
12246 | stub_entry = (struct ppc_stub_hash_entry *) gen_entry; | |
63bc6f6c AM |
12247 | info = in_arg; |
12248 | ||
12249 | htab = ppc_hash_table (info); | |
4dfe6ac6 | 12250 | if (htab == NULL) |
0a1b45a2 | 12251 | return false; |
721956f4 | 12252 | |
abf874aa CL |
12253 | /* Fail if the target section could not be assigned to an output |
12254 | section. The user should fix his linker script. */ | |
12255 | if (stub_entry->target_section != NULL | |
12256 | && stub_entry->target_section->output_section == NULL | |
12257 | && info->non_contiguous_regions) | |
c63d4862 | 12258 | info->callbacks->einfo (_("%F%P: Could not assign `%pA' to an output section. " |
53215f21 CL |
12259 | "Retry without --enable-non-contiguous-regions.\n"), |
12260 | stub_entry->target_section); | |
abf874aa CL |
12261 | |
12262 | /* Same for the group. */ | |
12263 | if (stub_entry->group->stub_sec != NULL | |
12264 | && stub_entry->group->stub_sec->output_section == NULL | |
12265 | && info->non_contiguous_regions) | |
c63d4862 AM |
12266 | info->callbacks->einfo (_("%F%P: Could not assign `%pA' to an output section. " |
12267 | "Retry without --enable-non-contiguous-regions.\n"), | |
12268 | stub_entry->group->stub_sec); | |
abf874aa | 12269 | |
1aa42141 | 12270 | /* Make a note of the offset within the stubs for this entry. */ |
0441f94f | 12271 | stub_offset = stub_entry->group->stub_sec->size; |
2405fc40 AM |
12272 | if (htab->stub_iteration > STUB_SHRINK_ITER |
12273 | && stub_entry->stub_offset > stub_offset) | |
12274 | stub_offset = stub_entry->stub_offset; | |
ecc741e6 | 12275 | stub_entry->id = ++htab->stub_id; |
1aa42141 | 12276 | |
a4b6fadd AM |
12277 | if (stub_entry->h != NULL |
12278 | && stub_entry->h->save_res | |
12279 | && stub_entry->h->elf.root.type == bfd_link_hash_defined | |
12280 | && stub_entry->h->elf.root.u.def.section == htab->sfpr) | |
12281 | { | |
12282 | /* Don't make stubs to out-of-line register save/restore | |
12283 | functions. Instead, emit copies of the functions. */ | |
12284 | stub_entry->group->needs_save_res = 1; | |
7aba54da AM |
12285 | stub_entry->type.main = ppc_stub_save_res; |
12286 | stub_entry->type.sub = ppc_stub_toc; | |
12287 | stub_entry->type.r2save = 0; | |
0a1b45a2 | 12288 | return true; |
a4b6fadd AM |
12289 | } |
12290 | ||
7aba54da | 12291 | if (stub_entry->type.main == ppc_stub_plt_branch) |
721956f4 | 12292 | { |
f891966f AM |
12293 | /* Reset the stub type from the plt branch variant in case we now |
12294 | can reach with a shorter stub. */ | |
04cb922a | 12295 | stub_entry->type.main = ppc_stub_long_branch; |
7aba54da AM |
12296 | } |
12297 | ||
12298 | if (stub_entry->type.main == ppc_stub_long_branch | |
12299 | && stub_entry->type.sub == ppc_stub_toc) | |
12300 | { | |
1aa42141 AM |
12301 | targ = (stub_entry->target_value |
12302 | + stub_entry->target_section->output_offset | |
12303 | + stub_entry->target_section->output_section->vma); | |
f891966f | 12304 | targ += PPC64_LOCAL_ENTRY_OFFSET (stub_entry->other); |
0441f94f | 12305 | off = (stub_offset |
1aa42141 AM |
12306 | + stub_entry->group->stub_sec->output_offset |
12307 | + stub_entry->group->stub_sec->output_section->vma); | |
721956f4 | 12308 | |
ad8e1ba5 | 12309 | size = 4; |
f891966f | 12310 | r2off = 0; |
7aba54da | 12311 | if (stub_entry->type.r2save) |
ad8e1ba5 | 12312 | { |
25f53a85 | 12313 | r2off = get_r2off (info, stub_entry); |
a7c49797 | 12314 | if (r2off == (bfd_vma) -1) |
aa374f67 | 12315 | { |
0a1b45a2 AM |
12316 | htab->stub_error = true; |
12317 | return false; | |
aa374f67 | 12318 | } |
a7c49797 | 12319 | size = 8; |
ac2df442 | 12320 | if (PPC_HA (r2off) != 0) |
a7c49797 AM |
12321 | size += 4; |
12322 | if (PPC_LO (r2off) != 0) | |
12323 | size += 4; | |
1aa42141 | 12324 | off += size - 4; |
ad8e1ba5 | 12325 | } |
1aa42141 | 12326 | off = targ - off; |
ad8e1ba5 | 12327 | |
f891966f AM |
12328 | /* If the branch offset is too big, use a ppc_stub_plt_branch. |
12329 | Do the same for -R objects without function descriptors. */ | |
7aba54da | 12330 | if ((stub_entry->type.r2save |
f891966f AM |
12331 | && r2off == 0 |
12332 | && htab->sec_info[stub_entry->target_section->id].toc_off == 0) | |
12333 | || off + (1 << 25) >= (bfd_vma) (1 << 26)) | |
721956f4 | 12334 | { |
f891966f | 12335 | struct ppc_branch_hash_entry *br_entry; |
df136d64 | 12336 | |
f891966f AM |
12337 | br_entry = ppc_branch_hash_lookup (&htab->branch_hash_table, |
12338 | stub_entry->root.string + 9, | |
0a1b45a2 | 12339 | true, false); |
f891966f | 12340 | if (br_entry == NULL) |
721956f4 | 12341 | { |
f891966f AM |
12342 | _bfd_error_handler (_("can't build branch stub `%s'"), |
12343 | stub_entry->root.string); | |
0a1b45a2 AM |
12344 | htab->stub_error = true; |
12345 | return false; | |
721956f4 AM |
12346 | } |
12347 | ||
f891966f | 12348 | if (br_entry->iter != htab->stub_iteration) |
721956f4 | 12349 | { |
f891966f AM |
12350 | br_entry->iter = htab->stub_iteration; |
12351 | br_entry->offset = htab->brlt->size; | |
12352 | htab->brlt->size += 8; | |
63bc6f6c | 12353 | |
1657026c | 12354 | if (htab->relbrlt != NULL && !info->enable_dt_relr) |
f891966f AM |
12355 | htab->relbrlt->size += sizeof (Elf64_External_Rela); |
12356 | else if (info->emitrelocations) | |
84f5d08e | 12357 | { |
f891966f AM |
12358 | htab->brlt->reloc_count += 1; |
12359 | htab->brlt->flags |= SEC_RELOC; | |
05d0e962 | 12360 | } |
f891966f | 12361 | } |
ac2df442 | 12362 | |
f891966f AM |
12363 | targ = (br_entry->offset |
12364 | + htab->brlt->output_offset | |
12365 | + htab->brlt->output_section->vma); | |
12366 | off = (elf_gp (info->output_bfd) | |
12367 | + htab->sec_info[stub_entry->group->link_sec->id].toc_off); | |
12368 | off = targ - off; | |
176a0d42 | 12369 | |
f891966f AM |
12370 | if (info->emitrelocations) |
12371 | { | |
12372 | stub_entry->group->stub_sec->reloc_count | |
12373 | += 1 + (PPC_HA (off) != 0); | |
12374 | stub_entry->group->stub_sec->flags |= SEC_RELOC; | |
12375 | } | |
05d0e962 | 12376 | |
04cb922a | 12377 | stub_entry->type.main = ppc_stub_plt_branch; |
7aba54da | 12378 | if (!stub_entry->type.r2save) |
f891966f AM |
12379 | { |
12380 | size = 12; | |
12381 | if (PPC_HA (off) != 0) | |
12382 | size = 16; | |
ac2df442 | 12383 | } |
f891966f | 12384 | else |
ac2df442 | 12385 | { |
f891966f AM |
12386 | size = 16; |
12387 | if (PPC_HA (off) != 0) | |
12388 | size += 4; | |
12389 | ||
12390 | if (PPC_HA (r2off) != 0) | |
12391 | size += 4; | |
12392 | if (PPC_LO (r2off) != 0) | |
12393 | size += 4; | |
ac2df442 | 12394 | } |
f40bb390 AM |
12395 | pad = plt_stub_pad (htab->params->plt_stub_align, stub_offset, size); |
12396 | stub_offset += pad; | |
721956f4 | 12397 | } |
f891966f AM |
12398 | else if (info->emitrelocations) |
12399 | { | |
12400 | stub_entry->group->stub_sec->reloc_count += 1; | |
12401 | stub_entry->group->stub_sec->flags |= SEC_RELOC; | |
12402 | } | |
7aba54da AM |
12403 | } |
12404 | else if (stub_entry->type.main == ppc_stub_long_branch) | |
12405 | { | |
0441f94f | 12406 | off = (stub_offset |
f891966f AM |
12407 | + stub_entry->group->stub_sec->output_offset |
12408 | + stub_entry->group->stub_sec->output_section->vma); | |
12409 | size = 0; | |
7aba54da | 12410 | if (stub_entry->type.r2save) |
f891966f AM |
12411 | size = 4; |
12412 | off += size; | |
12413 | targ = (stub_entry->target_value | |
12414 | + stub_entry->target_section->output_offset | |
12415 | + stub_entry->target_section->output_section->vma); | |
04bdff6a | 12416 | odd = off & 4; |
f891966f AM |
12417 | off = targ - off; |
12418 | ||
f40bb390 AM |
12419 | if (stub_entry->type.sub == ppc_stub_notoc) |
12420 | extra = size_power10_offset (off, odd); | |
12421 | else | |
12422 | extra = size_offset (off - 8); | |
12423 | /* Include branch insn plus those in the offset sequence. */ | |
12424 | size += 4 + extra; | |
12425 | ||
12426 | /* If the branch can't reach, use a plt_branch. | |
12427 | The branch insn is at the end, or "extra" bytes along. So | |
12428 | its offset will be "extra" bytes less that that already | |
12429 | calculated. */ | |
12430 | if (off - extra + (1 << 25) >= (bfd_vma) (1 << 26)) | |
12431 | { | |
12432 | stub_entry->type.main = ppc_stub_plt_branch; | |
12433 | size += 4; | |
12434 | pad = plt_stub_pad (htab->params->plt_stub_align, stub_offset, size); | |
12435 | if (pad != 0) | |
12436 | { | |
12437 | stub_offset += pad; | |
12438 | off -= pad; | |
12439 | odd ^= pad & 4; | |
12440 | size -= extra; | |
12441 | if (stub_entry->type.sub == ppc_stub_notoc) | |
12442 | extra = size_power10_offset (off, odd); | |
12443 | else | |
12444 | extra = size_offset (off - 8); | |
12445 | size += extra; | |
12446 | } | |
12447 | } | |
12448 | else if (info->emitrelocations) | |
12449 | stub_entry->group->stub_sec->reloc_count +=1; | |
12450 | ||
3d58e1fc AM |
12451 | if (info->emitrelocations) |
12452 | { | |
04bdff6a | 12453 | unsigned int num_rel; |
7aba54da | 12454 | if (stub_entry->type.sub == ppc_stub_notoc) |
7c1f4227 | 12455 | num_rel = num_relocs_for_power10_offset (off, odd); |
04bdff6a AM |
12456 | else |
12457 | num_rel = num_relocs_for_offset (off - 8); | |
12458 | stub_entry->group->stub_sec->reloc_count += num_rel; | |
3d58e1fc AM |
12459 | stub_entry->group->stub_sec->flags |= SEC_RELOC; |
12460 | } | |
12461 | ||
7aba54da | 12462 | if (stub_entry->type.sub != ppc_stub_notoc) |
04bdff6a AM |
12463 | { |
12464 | /* After the bcl, lr has been modified so we need to emit | |
12465 | .eh_frame info saying the return address is in r12. */ | |
0441f94f | 12466 | lr_used = stub_offset + 8; |
7aba54da | 12467 | if (stub_entry->type.r2save) |
04bdff6a AM |
12468 | lr_used += 4; |
12469 | /* The eh_frame info will consist of a DW_CFA_advance_loc or | |
12470 | variant, DW_CFA_register, 65, 12, DW_CFA_advance_loc+2, | |
12471 | DW_CFA_restore_extended 65. */ | |
12472 | delta = lr_used - stub_entry->group->lr_restore; | |
12473 | stub_entry->group->eh_size += eh_advance_size (delta) + 6; | |
12474 | stub_entry->group->lr_restore = lr_used + 8; | |
12475 | } | |
7aba54da AM |
12476 | } |
12477 | else if (stub_entry->type.sub >= ppc_stub_notoc) | |
12478 | { | |
12479 | BFD_ASSERT (stub_entry->type.main == ppc_stub_plt_call); | |
29433886 | 12480 | lr_used = 0; |
12cf8b93 AM |
12481 | if (stub_entry->h != NULL |
12482 | && is_tls_get_addr (&stub_entry->h->elf, htab) | |
29433886 AM |
12483 | && htab->params->tls_get_addr_opt) |
12484 | { | |
12485 | lr_used += 7 * 4; | |
12486 | if (!htab->params->no_tls_get_addr_regsave) | |
12487 | lr_used += 11 * 4; | |
7aba54da | 12488 | else if (stub_entry->type.r2save) |
29433886 AM |
12489 | lr_used += 2 * 4; |
12490 | } | |
7aba54da | 12491 | if (stub_entry->type.r2save) |
29433886 | 12492 | lr_used += 4; |
f891966f AM |
12493 | targ = stub_entry->plt_ent->plt.offset & ~1; |
12494 | if (targ >= (bfd_vma) -2) | |
12495 | abort (); | |
12496 | ||
12497 | plt = htab->elf.splt; | |
30845f11 | 12498 | if (use_local_plt (info, elf_hash_entry (stub_entry->h))) |
f891966f AM |
12499 | { |
12500 | if (stub_entry->symtype == STT_GNU_IFUNC) | |
12501 | plt = htab->elf.iplt; | |
12502 | else | |
12503 | plt = htab->pltlocal; | |
12504 | } | |
12505 | targ += plt->output_offset + plt->output_section->vma; | |
0441f94f | 12506 | off = (stub_offset |
29433886 AM |
12507 | + stub_entry->group->stub_sec->output_offset |
12508 | + stub_entry->group->stub_sec->output_section->vma | |
12509 | + lr_used); | |
04bdff6a | 12510 | odd = off & 4; |
f891966f AM |
12511 | off = targ - off; |
12512 | ||
0f0d9373 AM |
12513 | size = plt_stub_size (htab, stub_entry, off, odd); |
12514 | pad = plt_stub_pad (htab->params->plt_stub_align, stub_offset, size); | |
12515 | if (pad != 0) | |
f891966f | 12516 | { |
2405fc40 | 12517 | stub_offset += pad; |
f891966f | 12518 | off -= pad; |
29433886 | 12519 | odd ^= pad & 4; |
0f0d9373 | 12520 | size = plt_stub_size (htab, stub_entry, off, odd); |
f891966f AM |
12521 | } |
12522 | ||
3d58e1fc AM |
12523 | if (info->emitrelocations) |
12524 | { | |
04bdff6a | 12525 | unsigned int num_rel; |
7aba54da | 12526 | if (stub_entry->type.sub == ppc_stub_notoc) |
7c1f4227 | 12527 | num_rel = num_relocs_for_power10_offset (off, odd); |
04bdff6a AM |
12528 | else |
12529 | num_rel = num_relocs_for_offset (off - 8); | |
12530 | stub_entry->group->stub_sec->reloc_count += num_rel; | |
3d58e1fc AM |
12531 | stub_entry->group->stub_sec->flags |= SEC_RELOC; |
12532 | } | |
12533 | ||
7aba54da | 12534 | if (stub_entry->type.sub != ppc_stub_notoc) |
04bdff6a AM |
12535 | { |
12536 | /* After the bcl, lr has been modified so we need to emit | |
12537 | .eh_frame info saying the return address is in r12. */ | |
0441f94f | 12538 | lr_used += stub_offset + 8; |
04bdff6a AM |
12539 | /* The eh_frame info will consist of a DW_CFA_advance_loc or |
12540 | variant, DW_CFA_register, 65, 12, DW_CFA_advance_loc+2, | |
12541 | DW_CFA_restore_extended 65. */ | |
12542 | delta = lr_used - stub_entry->group->lr_restore; | |
12543 | stub_entry->group->eh_size += eh_advance_size (delta) + 6; | |
12544 | stub_entry->group->lr_restore = lr_used + 8; | |
12545 | } | |
7aba54da | 12546 | if (stub_entry->h != NULL |
29433886 AM |
12547 | && is_tls_get_addr (&stub_entry->h->elf, htab) |
12548 | && htab->params->tls_get_addr_opt) | |
12549 | { | |
12550 | if (!htab->params->no_tls_get_addr_regsave) | |
12551 | { | |
0441f94f | 12552 | unsigned int cfa_updt = stub_offset + 18 * 4; |
29433886 AM |
12553 | delta = cfa_updt - stub_entry->group->lr_restore; |
12554 | stub_entry->group->eh_size += eh_advance_size (delta); | |
12555 | stub_entry->group->eh_size += htab->opd_abi ? 36 : 35; | |
0441f94f | 12556 | stub_entry->group->lr_restore = stub_offset + size - 4; |
29433886 | 12557 | } |
7aba54da | 12558 | else if (stub_entry->type.r2save) |
29433886 | 12559 | { |
0441f94f | 12560 | lr_used = stub_offset + size - 20; |
29433886 AM |
12561 | delta = lr_used - stub_entry->group->lr_restore; |
12562 | stub_entry->group->eh_size += eh_advance_size (delta) + 6; | |
0441f94f | 12563 | stub_entry->group->lr_restore = stub_offset + size - 4; |
29433886 AM |
12564 | } |
12565 | } | |
7aba54da AM |
12566 | } |
12567 | else if (stub_entry->type.main == ppc_stub_plt_call) | |
12568 | { | |
f891966f AM |
12569 | targ = stub_entry->plt_ent->plt.offset & ~(bfd_vma) 1; |
12570 | if (targ >= (bfd_vma) -2) | |
12571 | abort (); | |
12572 | plt = htab->elf.splt; | |
30845f11 | 12573 | if (use_local_plt (info, elf_hash_entry (stub_entry->h))) |
f891966f AM |
12574 | { |
12575 | if (stub_entry->symtype == STT_GNU_IFUNC) | |
12576 | plt = htab->elf.iplt; | |
12577 | else | |
12578 | plt = htab->pltlocal; | |
12579 | } | |
12580 | targ += plt->output_offset + plt->output_section->vma; | |
12581 | ||
12582 | off = (elf_gp (info->output_bfd) | |
12583 | + htab->sec_info[stub_entry->group->link_sec->id].toc_off); | |
12584 | off = targ - off; | |
12585 | ||
0f0d9373 AM |
12586 | size = plt_stub_size (htab, stub_entry, off, 0); |
12587 | pad = plt_stub_pad (htab->params->plt_stub_align, stub_offset, size); | |
12588 | stub_offset += pad; | |
f891966f AM |
12589 | |
12590 | if (info->emitrelocations) | |
12591 | { | |
12592 | stub_entry->group->stub_sec->reloc_count | |
12593 | += ((PPC_HA (off) != 0) | |
12594 | + (htab->opd_abi | |
12595 | ? 2 + (htab->params->plt_static_chain | |
12596 | && PPC_HA (off + 16) == PPC_HA (off)) | |
12597 | : 1)); | |
12598 | stub_entry->group->stub_sec->flags |= SEC_RELOC; | |
12599 | } | |
12600 | ||
f891966f | 12601 | if (stub_entry->h != NULL |
ed7007c1 | 12602 | && is_tls_get_addr (&stub_entry->h->elf, htab) |
f891966f | 12603 | && htab->params->tls_get_addr_opt |
7aba54da | 12604 | && stub_entry->type.r2save) |
f891966f | 12605 | { |
29433886 AM |
12606 | if (!htab->params->no_tls_get_addr_regsave) |
12607 | { | |
12608 | /* Adjustments to r1 need to be described. */ | |
0441f94f | 12609 | unsigned int cfa_updt = stub_offset + 18 * 4; |
29433886 AM |
12610 | delta = cfa_updt - stub_entry->group->lr_restore; |
12611 | stub_entry->group->eh_size += eh_advance_size (delta); | |
12612 | stub_entry->group->eh_size += htab->opd_abi ? 36 : 35; | |
12613 | } | |
12614 | else | |
9e7028aa | 12615 | { |
0441f94f | 12616 | lr_used = stub_offset + size - 20; |
9e7028aa AM |
12617 | /* The eh_frame info will consist of a DW_CFA_advance_loc |
12618 | or variant, DW_CFA_offset_externed_sf, 65, -stackoff, | |
12619 | DW_CFA_advance_loc+4, DW_CFA_restore_extended, 65. */ | |
12620 | delta = lr_used - stub_entry->group->lr_restore; | |
12621 | stub_entry->group->eh_size += eh_advance_size (delta) + 6; | |
12622 | } | |
0441f94f | 12623 | stub_entry->group->lr_restore = stub_offset + size - 4; |
f891966f | 12624 | } |
7aba54da AM |
12625 | } |
12626 | else | |
12627 | { | |
f891966f | 12628 | BFD_FAIL (); |
0a1b45a2 | 12629 | return false; |
721956f4 AM |
12630 | } |
12631 | ||
0441f94f AM |
12632 | if (stub_entry->stub_offset != stub_offset) |
12633 | htab->stub_changed = true; | |
2405fc40 AM |
12634 | stub_entry->stub_offset = stub_offset; |
12635 | stub_entry->group->stub_sec->size = stub_offset + size; | |
0a1b45a2 | 12636 | return true; |
721956f4 AM |
12637 | } |
12638 | ||
12639 | /* Set up various things so that we can make a list of input sections | |
12640 | for each output section included in the link. Returns -1 on error, | |
cedb70c5 | 12641 | 0 when no stubs will be needed, and 1 on success. */ |
721956f4 AM |
12642 | |
12643 | int | |
e7d1c40c | 12644 | ppc64_elf_setup_section_lists (struct bfd_link_info *info) |
721956f4 | 12645 | { |
6f20ed8a | 12646 | unsigned int id; |
986f0783 | 12647 | size_t amt; |
721956f4 AM |
12648 | struct ppc_link_hash_table *htab = ppc_hash_table (info); |
12649 | ||
4dfe6ac6 NC |
12650 | if (htab == NULL) |
12651 | return -1; | |
4c52953f | 12652 | |
7cf7fcc8 | 12653 | htab->sec_info_arr_size = _bfd_section_id; |
6f20ed8a AM |
12654 | amt = sizeof (*htab->sec_info) * (htab->sec_info_arr_size); |
12655 | htab->sec_info = bfd_zmalloc (amt); | |
12656 | if (htab->sec_info == NULL) | |
721956f4 AM |
12657 | return -1; |
12658 | ||
3d6f9012 AM |
12659 | /* Set toc_off for com, und, abs and ind sections. */ |
12660 | for (id = 0; id < 3; id++) | |
6f20ed8a | 12661 | htab->sec_info[id].toc_off = TOC_BASE_OFF; |
734b6cf9 | 12662 | |
721956f4 AM |
12663 | return 1; |
12664 | } | |
12665 | ||
927be08e AM |
12666 | /* Set up for first pass at multitoc partitioning. */ |
12667 | ||
12668 | void | |
12669 | ppc64_elf_start_multitoc_partition (struct bfd_link_info *info) | |
12670 | { | |
12671 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
12672 | ||
1c865ab2 | 12673 | htab->toc_curr = ppc64_elf_set_toc (info, info->output_bfd); |
927be08e AM |
12674 | htab->toc_bfd = NULL; |
12675 | htab->toc_first_sec = NULL; | |
12676 | } | |
12677 | ||
e717da7e AM |
12678 | /* The linker repeatedly calls this function for each TOC input section |
12679 | and linker generated GOT section. Group input bfds such that the toc | |
927be08e | 12680 | within a group is less than 64k in size. */ |
ad8e1ba5 | 12681 | |
0a1b45a2 | 12682 | bool |
4ce794b7 | 12683 | ppc64_elf_next_toc_section (struct bfd_link_info *info, asection *isec) |
ad8e1ba5 AM |
12684 | { |
12685 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
d77c8a4b | 12686 | bfd_vma addr, off, limit; |
ad8e1ba5 | 12687 | |
4dfe6ac6 | 12688 | if (htab == NULL) |
0a1b45a2 | 12689 | return false; |
4dfe6ac6 | 12690 | |
927be08e | 12691 | if (!htab->second_toc_pass) |
4c52953f | 12692 | { |
927be08e | 12693 | /* Keep track of the first .toc or .got section for this input bfd. */ |
0a1b45a2 | 12694 | bool new_bfd = htab->toc_bfd != isec->owner; |
a4fd3de5 AM |
12695 | |
12696 | if (new_bfd) | |
bf102f86 AM |
12697 | { |
12698 | htab->toc_bfd = isec->owner; | |
12699 | htab->toc_first_sec = isec; | |
12700 | } | |
927be08e | 12701 | |
bf102f86 AM |
12702 | addr = isec->output_offset + isec->output_section->vma; |
12703 | off = addr - htab->toc_curr; | |
d77c8a4b AM |
12704 | limit = 0x80008000; |
12705 | if (ppc64_elf_tdata (isec->owner)->has_small_toc_reloc) | |
12706 | limit = 0x10000; | |
12707 | if (off + isec->size > limit) | |
bf102f86 AM |
12708 | { |
12709 | addr = (htab->toc_first_sec->output_offset | |
12710 | + htab->toc_first_sec->output_section->vma); | |
12711 | htab->toc_curr = addr; | |
a27e685f | 12712 | htab->toc_curr &= -TOC_BASE_ALIGN; |
bf102f86 | 12713 | } |
99877b66 | 12714 | |
927be08e AM |
12715 | /* toc_curr is the base address of this toc group. Set elf_gp |
12716 | for the input section to be the offset relative to the | |
12717 | output toc base plus 0x8000. Making the input elf_gp an | |
12718 | offset allows us to move the toc as a whole without | |
12719 | recalculating input elf_gp. */ | |
06bcf541 | 12720 | off = htab->toc_curr - elf_gp (info->output_bfd); |
927be08e AM |
12721 | off += TOC_BASE_OFF; |
12722 | ||
12723 | /* Die if someone uses a linker script that doesn't keep input | |
12724 | file .toc and .got together. */ | |
a4fd3de5 AM |
12725 | if (new_bfd |
12726 | && elf_gp (isec->owner) != 0 | |
927be08e | 12727 | && elf_gp (isec->owner) != off) |
0a1b45a2 | 12728 | return false; |
927be08e AM |
12729 | |
12730 | elf_gp (isec->owner) = off; | |
0a1b45a2 | 12731 | return true; |
4c52953f | 12732 | } |
927be08e AM |
12733 | |
12734 | /* During the second pass toc_first_sec points to the start of | |
12735 | a toc group, and toc_curr is used to track the old elf_gp. | |
12736 | We use toc_bfd to ensure we only look at each bfd once. */ | |
12737 | if (htab->toc_bfd == isec->owner) | |
0a1b45a2 | 12738 | return true; |
927be08e AM |
12739 | htab->toc_bfd = isec->owner; |
12740 | ||
12741 | if (htab->toc_first_sec == NULL | |
12742 | || htab->toc_curr != elf_gp (isec->owner)) | |
12743 | { | |
12744 | htab->toc_curr = elf_gp (isec->owner); | |
12745 | htab->toc_first_sec = isec; | |
12746 | } | |
12747 | addr = (htab->toc_first_sec->output_offset | |
12748 | + htab->toc_first_sec->output_section->vma); | |
06bcf541 | 12749 | off = addr - elf_gp (info->output_bfd) + TOC_BASE_OFF; |
927be08e AM |
12750 | elf_gp (isec->owner) = off; |
12751 | ||
0a1b45a2 | 12752 | return true; |
ad8e1ba5 AM |
12753 | } |
12754 | ||
927be08e AM |
12755 | /* Called via elf_link_hash_traverse to merge GOT entries for global |
12756 | symbol H. */ | |
12757 | ||
0a1b45a2 | 12758 | static bool |
927be08e AM |
12759 | merge_global_got (struct elf_link_hash_entry *h, void *inf ATTRIBUTE_UNUSED) |
12760 | { | |
12761 | if (h->root.type == bfd_link_hash_indirect) | |
0a1b45a2 | 12762 | return true; |
927be08e | 12763 | |
927be08e AM |
12764 | merge_got_entries (&h->got.glist); |
12765 | ||
0a1b45a2 | 12766 | return true; |
927be08e AM |
12767 | } |
12768 | ||
12769 | /* Called via elf_link_hash_traverse to allocate GOT entries for global | |
12770 | symbol H. */ | |
12771 | ||
0a1b45a2 | 12772 | static bool |
927be08e AM |
12773 | reallocate_got (struct elf_link_hash_entry *h, void *inf) |
12774 | { | |
12775 | struct got_entry *gent; | |
12776 | ||
12777 | if (h->root.type == bfd_link_hash_indirect) | |
0a1b45a2 | 12778 | return true; |
927be08e | 12779 | |
927be08e AM |
12780 | for (gent = h->got.glist; gent != NULL; gent = gent->next) |
12781 | if (!gent->is_indirect) | |
12782 | allocate_got (h, (struct bfd_link_info *) inf, gent); | |
0a1b45a2 | 12783 | return true; |
927be08e AM |
12784 | } |
12785 | ||
12786 | /* Called on the first multitoc pass after the last call to | |
12787 | ppc64_elf_next_toc_section. This function removes duplicate GOT | |
12788 | entries. */ | |
12789 | ||
0a1b45a2 | 12790 | bool |
927be08e | 12791 | ppc64_elf_layout_multitoc (struct bfd_link_info *info) |
ad8e1ba5 AM |
12792 | { |
12793 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
927be08e | 12794 | struct bfd *ibfd, *ibfd2; |
0a1b45a2 | 12795 | bool done_something; |
927be08e AM |
12796 | |
12797 | htab->multi_toc_needed = htab->toc_curr != elf_gp (info->output_bfd); | |
ad8e1ba5 | 12798 | |
7865406b | 12799 | if (!htab->do_multi_toc) |
0a1b45a2 | 12800 | return false; |
7865406b | 12801 | |
d0fae19d | 12802 | /* Merge global sym got entries within a toc group. */ |
927be08e AM |
12803 | elf_link_hash_traverse (&htab->elf, merge_global_got, info); |
12804 | ||
12805 | /* And tlsld_got. */ | |
c72f2fb2 | 12806 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next) |
927be08e AM |
12807 | { |
12808 | struct got_entry *ent, *ent2; | |
12809 | ||
12810 | if (!is_ppc64_elf (ibfd)) | |
12811 | continue; | |
12812 | ||
12813 | ent = ppc64_tlsld_got (ibfd); | |
12814 | if (!ent->is_indirect | |
12815 | && ent->got.offset != (bfd_vma) -1) | |
12816 | { | |
c72f2fb2 | 12817 | for (ibfd2 = ibfd->link.next; ibfd2 != NULL; ibfd2 = ibfd2->link.next) |
927be08e AM |
12818 | { |
12819 | if (!is_ppc64_elf (ibfd2)) | |
12820 | continue; | |
12821 | ||
12822 | ent2 = ppc64_tlsld_got (ibfd2); | |
12823 | if (!ent2->is_indirect | |
12824 | && ent2->got.offset != (bfd_vma) -1 | |
12825 | && elf_gp (ibfd2) == elf_gp (ibfd)) | |
12826 | { | |
0a1b45a2 | 12827 | ent2->is_indirect = true; |
927be08e AM |
12828 | ent2->got.ent = ent; |
12829 | } | |
12830 | } | |
12831 | } | |
12832 | } | |
12833 | ||
12834 | /* Zap sizes of got sections. */ | |
33e44f2e AM |
12835 | htab->elf.irelplt->rawsize = htab->elf.irelplt->size; |
12836 | htab->elf.irelplt->size -= htab->got_reli_size; | |
927be08e AM |
12837 | htab->got_reli_size = 0; |
12838 | ||
c72f2fb2 | 12839 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next) |
927be08e AM |
12840 | { |
12841 | asection *got, *relgot; | |
12842 | ||
12843 | if (!is_ppc64_elf (ibfd)) | |
12844 | continue; | |
12845 | ||
12846 | got = ppc64_elf_tdata (ibfd)->got; | |
12847 | if (got != NULL) | |
12848 | { | |
12849 | got->rawsize = got->size; | |
12850 | got->size = 0; | |
12851 | relgot = ppc64_elf_tdata (ibfd)->relgot; | |
12852 | relgot->rawsize = relgot->size; | |
12853 | relgot->size = 0; | |
12854 | } | |
12855 | } | |
12856 | ||
12857 | /* Now reallocate the got, local syms first. We don't need to | |
12858 | allocate section contents again since we never increase size. */ | |
c72f2fb2 | 12859 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next) |
927be08e AM |
12860 | { |
12861 | struct got_entry **lgot_ents; | |
12862 | struct got_entry **end_lgot_ents; | |
12863 | struct plt_entry **local_plt; | |
12864 | struct plt_entry **end_local_plt; | |
f961d9dd | 12865 | unsigned char *lgot_masks; |
927be08e AM |
12866 | bfd_size_type locsymcount; |
12867 | Elf_Internal_Shdr *symtab_hdr; | |
19e08130 | 12868 | asection *s; |
3a3a4c1f AM |
12869 | Elf_Internal_Sym *local_syms; |
12870 | Elf_Internal_Sym *isym; | |
927be08e AM |
12871 | |
12872 | if (!is_ppc64_elf (ibfd)) | |
12873 | continue; | |
12874 | ||
12875 | lgot_ents = elf_local_got_ents (ibfd); | |
12876 | if (!lgot_ents) | |
12877 | continue; | |
12878 | ||
12879 | symtab_hdr = &elf_symtab_hdr (ibfd); | |
12880 | locsymcount = symtab_hdr->sh_info; | |
12881 | end_lgot_ents = lgot_ents + locsymcount; | |
12882 | local_plt = (struct plt_entry **) end_lgot_ents; | |
12883 | end_local_plt = local_plt + locsymcount; | |
f961d9dd | 12884 | lgot_masks = (unsigned char *) end_local_plt; |
c9fecd62 AM |
12885 | local_syms = (Elf_Internal_Sym *) symtab_hdr->contents; |
12886 | if (local_syms == NULL && locsymcount != 0) | |
3a3a4c1f | 12887 | { |
c9fecd62 AM |
12888 | local_syms = bfd_elf_get_elf_syms (ibfd, symtab_hdr, locsymcount, |
12889 | 0, NULL, NULL, NULL); | |
12890 | if (local_syms == NULL) | |
12891 | return false; | |
3a3a4c1f | 12892 | } |
927be08e | 12893 | s = ppc64_elf_tdata (ibfd)->got; |
3a3a4c1f AM |
12894 | for (isym = local_syms; |
12895 | lgot_ents < end_lgot_ents; | |
c9fecd62 | 12896 | ++lgot_ents, ++lgot_masks, isym++) |
927be08e AM |
12897 | { |
12898 | struct got_entry *ent; | |
12899 | ||
12900 | for (ent = *lgot_ents; ent != NULL; ent = ent->next) | |
d0fae19d | 12901 | { |
19e08130 AM |
12902 | unsigned int ent_size = 8; |
12903 | unsigned int rel_size = sizeof (Elf64_External_Rela); | |
12904 | ||
d0fae19d AM |
12905 | ent->got.offset = s->size; |
12906 | if ((ent->tls_type & *lgot_masks & TLS_GD) != 0) | |
d0fae19d | 12907 | { |
19e08130 AM |
12908 | ent_size *= 2; |
12909 | rel_size *= 2; | |
12910 | } | |
12911 | s->size += ent_size; | |
37da22e5 | 12912 | if ((*lgot_masks & (TLS_TLS | PLT_IFUNC)) == PLT_IFUNC) |
19e08130 | 12913 | { |
33e44f2e | 12914 | htab->elf.irelplt->size += rel_size; |
19e08130 AM |
12915 | htab->got_reli_size += rel_size; |
12916 | } | |
6a3858a6 | 12917 | else if (bfd_link_pic (info) |
8f22c953 AM |
12918 | && (ent->tls_type == 0 |
12919 | ? !info->enable_dt_relr | |
3a3a4c1f AM |
12920 | : !bfd_link_executable (info)) |
12921 | && isym->st_shndx != SHN_ABS) | |
19e08130 AM |
12922 | { |
12923 | asection *srel = ppc64_elf_tdata (ibfd)->relgot; | |
12924 | srel->size += rel_size; | |
d0fae19d AM |
12925 | } |
12926 | } | |
927be08e AM |
12927 | } |
12928 | } | |
12929 | ||
12930 | elf_link_hash_traverse (&htab->elf, reallocate_got, info); | |
12931 | ||
c72f2fb2 | 12932 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next) |
927be08e AM |
12933 | { |
12934 | struct got_entry *ent; | |
12935 | ||
12936 | if (!is_ppc64_elf (ibfd)) | |
12937 | continue; | |
12938 | ||
12939 | ent = ppc64_tlsld_got (ibfd); | |
12940 | if (!ent->is_indirect | |
12941 | && ent->got.offset != (bfd_vma) -1) | |
12942 | { | |
12943 | asection *s = ppc64_elf_tdata (ibfd)->got; | |
12944 | ent->got.offset = s->size; | |
12945 | s->size += 16; | |
f749f26e | 12946 | if (bfd_link_dll (info)) |
927be08e AM |
12947 | { |
12948 | asection *srel = ppc64_elf_tdata (ibfd)->relgot; | |
12949 | srel->size += sizeof (Elf64_External_Rela); | |
12950 | } | |
12951 | } | |
12952 | } | |
12953 | ||
33e44f2e | 12954 | done_something = htab->elf.irelplt->rawsize != htab->elf.irelplt->size; |
927be08e | 12955 | if (!done_something) |
c72f2fb2 | 12956 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next) |
927be08e AM |
12957 | { |
12958 | asection *got; | |
12959 | ||
12960 | if (!is_ppc64_elf (ibfd)) | |
12961 | continue; | |
12962 | ||
12963 | got = ppc64_elf_tdata (ibfd)->got; | |
12964 | if (got != NULL) | |
12965 | { | |
12966 | done_something = got->rawsize != got->size; | |
12967 | if (done_something) | |
12968 | break; | |
12969 | } | |
12970 | } | |
12971 | ||
12972 | if (done_something) | |
e7d1c40c | 12973 | (*htab->params->layout_sections_again) (); |
927be08e AM |
12974 | |
12975 | /* Set up for second pass over toc sections to recalculate elf_gp | |
12976 | on input sections. */ | |
12977 | htab->toc_bfd = NULL; | |
12978 | htab->toc_first_sec = NULL; | |
0a1b45a2 | 12979 | htab->second_toc_pass = true; |
927be08e AM |
12980 | return done_something; |
12981 | } | |
12982 | ||
12983 | /* Called after second pass of multitoc partitioning. */ | |
12984 | ||
12985 | void | |
12986 | ppc64_elf_finish_multitoc_partition (struct bfd_link_info *info) | |
12987 | { | |
12988 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
12989 | ||
12990 | /* After the second pass, toc_curr tracks the TOC offset used | |
12991 | for code sections below in ppc64_elf_next_input_section. */ | |
3d6f9012 | 12992 | htab->toc_curr = TOC_BASE_OFF; |
ad8e1ba5 AM |
12993 | } |
12994 | ||
9b5ecbd0 AM |
12995 | /* No toc references were found in ISEC. If the code in ISEC makes no |
12996 | calls, then there's no need to use toc adjusting stubs when branching | |
12997 | into ISEC. Actually, indirect calls from ISEC are OK as they will | |
4c52953f AM |
12998 | load r2. Returns -1 on error, 0 for no stub needed, 1 for stub |
12999 | needed, and 2 if a cyclical call-graph was found but no other reason | |
13000 | for a stub was detected. If called from the top level, a return of | |
13001 | 2 means the same as a return of 0. */ | |
9b5ecbd0 AM |
13002 | |
13003 | static int | |
4ce794b7 | 13004 | toc_adjusting_stub_needed (struct bfd_link_info *info, asection *isec) |
9b5ecbd0 | 13005 | { |
9b5ecbd0 | 13006 | int ret; |
70cc837d AM |
13007 | |
13008 | /* Mark this section as checked. */ | |
13009 | isec->call_check_done = 1; | |
9b5ecbd0 | 13010 | |
772119ce AM |
13011 | /* We know none of our code bearing sections will need toc stubs. */ |
13012 | if ((isec->flags & SEC_LINKER_CREATED) != 0) | |
13013 | return 0; | |
13014 | ||
eea6121a | 13015 | if (isec->size == 0) |
082c50f8 AM |
13016 | return 0; |
13017 | ||
4c52953f AM |
13018 | if (isec->output_section == NULL) |
13019 | return 0; | |
13020 | ||
4c52953f | 13021 | ret = 0; |
70cc837d | 13022 | if (isec->reloc_count != 0) |
9b5ecbd0 | 13023 | { |
70cc837d AM |
13024 | Elf_Internal_Rela *relstart, *rel; |
13025 | Elf_Internal_Sym *local_syms; | |
13026 | struct ppc_link_hash_table *htab; | |
2917689a | 13027 | |
70cc837d AM |
13028 | relstart = _bfd_elf_link_read_relocs (isec->owner, isec, NULL, NULL, |
13029 | info->keep_memory); | |
13030 | if (relstart == NULL) | |
13031 | return -1; | |
90aecf7a | 13032 | |
70cc837d AM |
13033 | /* Look for branches to outside of this section. */ |
13034 | local_syms = NULL; | |
13035 | htab = ppc_hash_table (info); | |
13036 | if (htab == NULL) | |
13037 | return -1; | |
4c52953f | 13038 | |
70cc837d | 13039 | for (rel = relstart; rel < relstart + isec->reloc_count; ++rel) |
4c52953f | 13040 | { |
70cc837d AM |
13041 | enum elf_ppc64_reloc_type r_type; |
13042 | unsigned long r_symndx; | |
13043 | struct elf_link_hash_entry *h; | |
13044 | struct ppc_link_hash_entry *eh; | |
13045 | Elf_Internal_Sym *sym; | |
13046 | asection *sym_sec; | |
13047 | struct _opd_sec_data *opd; | |
13048 | bfd_vma sym_value; | |
13049 | bfd_vma dest; | |
13050 | ||
13051 | r_type = ELF64_R_TYPE (rel->r_info); | |
13052 | if (r_type != R_PPC64_REL24 | |
05d0e962 | 13053 | && r_type != R_PPC64_REL24_NOTOC |
7aba54da | 13054 | && r_type != R_PPC64_REL24_P9NOTOC |
70cc837d AM |
13055 | && r_type != R_PPC64_REL14 |
13056 | && r_type != R_PPC64_REL14_BRTAKEN | |
23cedd1d | 13057 | && r_type != R_PPC64_REL14_BRNTAKEN |
5663e321 AM |
13058 | && r_type != R_PPC64_PLTCALL |
13059 | && r_type != R_PPC64_PLTCALL_NOTOC) | |
70cc837d | 13060 | continue; |
4c52953f | 13061 | |
70cc837d AM |
13062 | r_symndx = ELF64_R_SYM (rel->r_info); |
13063 | if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, r_symndx, | |
13064 | isec->owner)) | |
4c52953f | 13065 | { |
70cc837d AM |
13066 | ret = -1; |
13067 | break; | |
13068 | } | |
4c52953f | 13069 | |
70cc837d AM |
13070 | /* Calls to dynamic lib functions go through a plt call stub |
13071 | that uses r2. */ | |
ed7007c1 | 13072 | eh = ppc_elf_hash_entry (h); |
70cc837d AM |
13073 | if (eh != NULL |
13074 | && (eh->elf.plt.plist != NULL | |
13075 | || (eh->oh != NULL | |
13076 | && ppc_follow_link (eh->oh)->elf.plt.plist != NULL))) | |
13077 | { | |
13078 | ret = 1; | |
13079 | break; | |
4c52953f AM |
13080 | } |
13081 | ||
70cc837d AM |
13082 | if (sym_sec == NULL) |
13083 | /* Ignore other undefined symbols. */ | |
4c52953f | 13084 | continue; |
4c52953f | 13085 | |
70cc837d AM |
13086 | /* Assume branches to other sections not included in the |
13087 | link need stubs too, to cover -R and absolute syms. */ | |
13088 | if (sym_sec->output_section == NULL) | |
13089 | { | |
13090 | ret = 1; | |
13091 | break; | |
13092 | } | |
4c52953f | 13093 | |
70cc837d AM |
13094 | if (h == NULL) |
13095 | sym_value = sym->st_value; | |
13096 | else | |
13097 | { | |
13098 | if (h->root.type != bfd_link_hash_defined | |
13099 | && h->root.type != bfd_link_hash_defweak) | |
13100 | abort (); | |
13101 | sym_value = h->root.u.def.value; | |
13102 | } | |
13103 | sym_value += rel->r_addend; | |
4c52953f | 13104 | |
70cc837d AM |
13105 | /* If this branch reloc uses an opd sym, find the code section. */ |
13106 | opd = get_opd_info (sym_sec); | |
13107 | if (opd != NULL) | |
13108 | { | |
13109 | if (h == NULL && opd->adjust != NULL) | |
13110 | { | |
13111 | long adjust; | |
4c52953f | 13112 | |
92a9c616 | 13113 | adjust = opd->adjust[OPD_NDX (sym_value)]; |
70cc837d AM |
13114 | if (adjust == -1) |
13115 | /* Assume deleted functions won't ever be called. */ | |
13116 | continue; | |
13117 | sym_value += adjust; | |
13118 | } | |
4c52953f | 13119 | |
aef36ac1 | 13120 | dest = opd_entry_value (sym_sec, sym_value, |
0a1b45a2 | 13121 | &sym_sec, NULL, false); |
70cc837d AM |
13122 | if (dest == (bfd_vma) -1) |
13123 | continue; | |
13124 | } | |
13125 | else | |
13126 | dest = (sym_value | |
13127 | + sym_sec->output_offset | |
13128 | + sym_sec->output_section->vma); | |
4c52953f | 13129 | |
70cc837d AM |
13130 | /* Ignore branch to self. */ |
13131 | if (sym_sec == isec) | |
13132 | continue; | |
4c52953f | 13133 | |
70cc837d AM |
13134 | /* If the called function uses the toc, we need a stub. */ |
13135 | if (sym_sec->has_toc_reloc | |
13136 | || sym_sec->makes_toc_func_call) | |
4c52953f | 13137 | { |
70cc837d | 13138 | ret = 1; |
4c52953f AM |
13139 | break; |
13140 | } | |
70cc837d AM |
13141 | |
13142 | /* Assume any branch that needs a long branch stub might in fact | |
13143 | need a plt_branch stub. A plt_branch stub uses r2. */ | |
13144 | else if (dest - (isec->output_offset | |
13145 | + isec->output_section->vma | |
6911b7dc AM |
13146 | + rel->r_offset) + (1 << 25) |
13147 | >= (2u << 25) - PPC64_LOCAL_ENTRY_OFFSET (h | |
13148 | ? h->other | |
13149 | : sym->st_other)) | |
4c52953f | 13150 | { |
70cc837d AM |
13151 | ret = 1; |
13152 | break; | |
13153 | } | |
13154 | ||
13155 | /* If calling back to a section in the process of being | |
13156 | tested, we can't say for sure that no toc adjusting stubs | |
13157 | are needed, so don't return zero. */ | |
13158 | else if (sym_sec->call_check_in_progress) | |
13159 | ret = 2; | |
13160 | ||
13161 | /* Branches to another section that itself doesn't have any TOC | |
13162 | references are OK. Recursively call ourselves to check. */ | |
13163 | else if (!sym_sec->call_check_done) | |
13164 | { | |
13165 | int recur; | |
13166 | ||
13167 | /* Mark current section as indeterminate, so that other | |
13168 | sections that call back to current won't be marked as | |
13169 | known. */ | |
13170 | isec->call_check_in_progress = 1; | |
13171 | recur = toc_adjusting_stub_needed (info, sym_sec); | |
13172 | isec->call_check_in_progress = 0; | |
13173 | ||
4c52953f AM |
13174 | if (recur != 0) |
13175 | { | |
70cc837d AM |
13176 | ret = recur; |
13177 | if (recur != 2) | |
13178 | break; | |
4c52953f AM |
13179 | } |
13180 | } | |
4c52953f | 13181 | } |
70cc837d | 13182 | |
c9594989 AM |
13183 | if (elf_symtab_hdr (isec->owner).contents |
13184 | != (unsigned char *) local_syms) | |
70cc837d AM |
13185 | free (local_syms); |
13186 | if (elf_section_data (isec)->relocs != relstart) | |
13187 | free (relstart); | |
9b5ecbd0 AM |
13188 | } |
13189 | ||
70cc837d AM |
13190 | if ((ret & 1) == 0 |
13191 | && isec->map_head.s != NULL | |
13192 | && (strcmp (isec->output_section->name, ".init") == 0 | |
13193 | || strcmp (isec->output_section->name, ".fini") == 0)) | |
13194 | { | |
13195 | if (isec->map_head.s->has_toc_reloc | |
13196 | || isec->map_head.s->makes_toc_func_call) | |
13197 | ret = 1; | |
13198 | else if (!isec->map_head.s->call_check_done) | |
13199 | { | |
13200 | int recur; | |
13201 | isec->call_check_in_progress = 1; | |
13202 | recur = toc_adjusting_stub_needed (info, isec->map_head.s); | |
13203 | isec->call_check_in_progress = 0; | |
13204 | if (recur != 0) | |
13205 | ret = recur; | |
13206 | } | |
13207 | } | |
13208 | ||
13209 | if (ret == 1) | |
13210 | isec->makes_toc_func_call = 1; | |
4c52953f | 13211 | |
9b5ecbd0 AM |
13212 | return ret; |
13213 | } | |
13214 | ||
721956f4 AM |
13215 | /* The linker repeatedly calls this function for each input section, |
13216 | in the order that input sections are linked into output sections. | |
13217 | Build lists of input sections to determine groupings between which | |
13218 | we may insert linker stubs. */ | |
13219 | ||
0a1b45a2 | 13220 | bool |
4ce794b7 | 13221 | ppc64_elf_next_input_section (struct bfd_link_info *info, asection *isec) |
721956f4 AM |
13222 | { |
13223 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
13224 | ||
4dfe6ac6 | 13225 | if (htab == NULL) |
0a1b45a2 | 13226 | return false; |
4dfe6ac6 | 13227 | |
734b6cf9 | 13228 | if ((isec->output_section->flags & SEC_CODE) != 0 |
6f20ed8a | 13229 | && isec->output_section->id < htab->sec_info_arr_size) |
721956f4 | 13230 | { |
3d6f9012 AM |
13231 | /* This happens to make the list in reverse order, |
13232 | which is what we want. */ | |
6f20ed8a AM |
13233 | htab->sec_info[isec->id].u.list |
13234 | = htab->sec_info[isec->output_section->id].u.list; | |
13235 | htab->sec_info[isec->output_section->id].u.list = isec; | |
721956f4 | 13236 | } |
ad8e1ba5 | 13237 | |
4c52953f | 13238 | if (htab->multi_toc_needed) |
9b5ecbd0 | 13239 | { |
8b974ba3 AM |
13240 | /* Analyse sections that aren't already flagged as needing a |
13241 | valid toc pointer. Exclude .fixup for the linux kernel. | |
13242 | .fixup contains branches, but only back to the function that | |
13243 | hit an exception. */ | |
13244 | if (!(isec->has_toc_reloc | |
13245 | || (isec->flags & SEC_CODE) == 0 | |
13246 | || strcmp (isec->name, ".fixup") == 0 | |
13247 | || isec->call_check_done)) | |
13248 | { | |
13249 | if (toc_adjusting_stub_needed (info, isec) < 0) | |
0a1b45a2 | 13250 | return false; |
8b974ba3 AM |
13251 | } |
13252 | /* Make all sections use the TOC assigned for this object file. | |
13253 | This will be wrong for pasted sections; We fix that in | |
13254 | check_pasted_section(). */ | |
13255 | if (elf_gp (isec->owner) != 0) | |
13256 | htab->toc_curr = elf_gp (isec->owner); | |
13257 | } | |
13258 | ||
6f20ed8a | 13259 | htab->sec_info[isec->id].toc_off = htab->toc_curr; |
0a1b45a2 | 13260 | return true; |
721956f4 AM |
13261 | } |
13262 | ||
70cc837d AM |
13263 | /* Check that all .init and .fini sections use the same toc, if they |
13264 | have toc relocs. */ | |
13265 | ||
0a1b45a2 | 13266 | static bool |
70cc837d AM |
13267 | check_pasted_section (struct bfd_link_info *info, const char *name) |
13268 | { | |
13269 | asection *o = bfd_get_section_by_name (info->output_bfd, name); | |
13270 | ||
13271 | if (o != NULL) | |
13272 | { | |
13273 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
13274 | bfd_vma toc_off = 0; | |
13275 | asection *i; | |
13276 | ||
13277 | for (i = o->map_head.s; i != NULL; i = i->map_head.s) | |
13278 | if (i->has_toc_reloc) | |
13279 | { | |
13280 | if (toc_off == 0) | |
6f20ed8a AM |
13281 | toc_off = htab->sec_info[i->id].toc_off; |
13282 | else if (toc_off != htab->sec_info[i->id].toc_off) | |
0a1b45a2 | 13283 | return false; |
70cc837d | 13284 | } |
6683a28d AM |
13285 | |
13286 | if (toc_off == 0) | |
13287 | for (i = o->map_head.s; i != NULL; i = i->map_head.s) | |
13288 | if (i->makes_toc_func_call) | |
13289 | { | |
6f20ed8a | 13290 | toc_off = htab->sec_info[i->id].toc_off; |
6683a28d AM |
13291 | break; |
13292 | } | |
13293 | ||
70cc837d AM |
13294 | /* Make sure the whole pasted function uses the same toc offset. */ |
13295 | if (toc_off != 0) | |
13296 | for (i = o->map_head.s; i != NULL; i = i->map_head.s) | |
6f20ed8a | 13297 | htab->sec_info[i->id].toc_off = toc_off; |
70cc837d | 13298 | } |
0a1b45a2 | 13299 | return true; |
70cc837d AM |
13300 | } |
13301 | ||
0a1b45a2 | 13302 | bool |
70cc837d AM |
13303 | ppc64_elf_check_init_fini (struct bfd_link_info *info) |
13304 | { | |
0c80c644 SM |
13305 | bool ret1 = check_pasted_section (info, ".init"); |
13306 | bool ret2 = check_pasted_section (info, ".fini"); | |
13307 | ||
13308 | return ret1 && ret2; | |
70cc837d AM |
13309 | } |
13310 | ||
721956f4 AM |
13311 | /* See whether we can group stub sections together. Grouping stub |
13312 | sections may result in fewer stubs. More importantly, we need to | |
13313 | put all .init* and .fini* stubs at the beginning of the .init or | |
13314 | .fini output sections respectively, because glibc splits the | |
13315 | _init and _fini functions into multiple parts. Putting a stub in | |
13316 | the middle of a function is not a good idea. */ | |
13317 | ||
0a1b45a2 | 13318 | static bool |
6f20ed8a | 13319 | group_sections (struct bfd_link_info *info, |
4ce794b7 | 13320 | bfd_size_type stub_group_size, |
0a1b45a2 | 13321 | bool stubs_always_before_branch) |
721956f4 | 13322 | { |
6f20ed8a AM |
13323 | struct ppc_link_hash_table *htab; |
13324 | asection *osec; | |
0a1b45a2 | 13325 | bool suppress_size_errors; |
7c8fe5c4 | 13326 | |
6f20ed8a AM |
13327 | htab = ppc_hash_table (info); |
13328 | if (htab == NULL) | |
0a1b45a2 | 13329 | return false; |
6f20ed8a | 13330 | |
0a1b45a2 | 13331 | suppress_size_errors = false; |
7c8fe5c4 AM |
13332 | if (stub_group_size == 1) |
13333 | { | |
13334 | /* Default values. */ | |
13335 | if (stubs_always_before_branch) | |
09f92717 | 13336 | stub_group_size = 0x1e00000; |
7c8fe5c4 | 13337 | else |
09f92717 | 13338 | stub_group_size = 0x1c00000; |
0a1b45a2 | 13339 | suppress_size_errors = true; |
7c8fe5c4 AM |
13340 | } |
13341 | ||
6f20ed8a | 13342 | for (osec = info->output_bfd->sections; osec != NULL; osec = osec->next) |
721956f4 | 13343 | { |
6f20ed8a AM |
13344 | asection *tail; |
13345 | ||
13346 | if (osec->id >= htab->sec_info_arr_size) | |
13347 | continue; | |
13348 | ||
13349 | tail = htab->sec_info[osec->id].u.list; | |
734b6cf9 | 13350 | while (tail != NULL) |
721956f4 | 13351 | { |
734b6cf9 AM |
13352 | asection *curr; |
13353 | asection *prev; | |
13354 | bfd_size_type total; | |
0a1b45a2 | 13355 | bool big_sec; |
734b6cf9 | 13356 | bfd_vma curr_toc; |
6f20ed8a | 13357 | struct map_stub *group; |
09f92717 | 13358 | bfd_size_type group_size; |
734b6cf9 AM |
13359 | |
13360 | curr = tail; | |
eea6121a | 13361 | total = tail->size; |
09f92717 AM |
13362 | group_size = (ppc64_elf_section_data (tail) != NULL |
13363 | && ppc64_elf_section_data (tail)->has_14bit_branch | |
13364 | ? stub_group_size >> 10 : stub_group_size); | |
13365 | ||
13366 | big_sec = total > group_size; | |
7c8fe5c4 | 13367 | if (big_sec && !suppress_size_errors) |
695344c0 | 13368 | /* xgettext:c-format */ |
871b3ab2 | 13369 | _bfd_error_handler (_("%pB section %pA exceeds stub group size"), |
4eca0228 | 13370 | tail->owner, tail); |
6f20ed8a | 13371 | curr_toc = htab->sec_info[tail->id].toc_off; |
734b6cf9 | 13372 | |
6f20ed8a | 13373 | while ((prev = htab->sec_info[curr->id].u.list) != NULL |
734b6cf9 | 13374 | && ((total += curr->output_offset - prev->output_offset) |
6bee8834 AM |
13375 | < (ppc64_elf_section_data (prev) != NULL |
13376 | && ppc64_elf_section_data (prev)->has_14bit_branch | |
09f92717 | 13377 | ? (group_size = stub_group_size >> 10) : group_size)) |
6f20ed8a | 13378 | && htab->sec_info[prev->id].toc_off == curr_toc) |
734b6cf9 AM |
13379 | curr = prev; |
13380 | ||
13381 | /* OK, the size from the start of CURR to the end is less | |
09f92717 | 13382 | than group_size and thus can be handled by one stub |
734b6cf9 | 13383 | section. (or the tail section is itself larger than |
09f92717 AM |
13384 | group_size, in which case we may be toast.) We should |
13385 | really be keeping track of the total size of stubs added | |
13386 | here, as stubs contribute to the final output section | |
13387 | size. That's a little tricky, and this way will only | |
13388 | break if stubs added make the total size more than 2^25, | |
13389 | ie. for the default stub_group_size, if stubs total more | |
13390 | than 2097152 bytes, or nearly 75000 plt call stubs. */ | |
6f20ed8a AM |
13391 | group = bfd_alloc (curr->owner, sizeof (*group)); |
13392 | if (group == NULL) | |
0a1b45a2 | 13393 | return false; |
6f20ed8a AM |
13394 | group->link_sec = curr; |
13395 | group->stub_sec = NULL; | |
a4b6fadd | 13396 | group->needs_save_res = 0; |
df136d64 AM |
13397 | group->lr_restore = 0; |
13398 | group->eh_size = 0; | |
13399 | group->eh_base = 0; | |
a4b6fadd AM |
13400 | group->next = htab->group; |
13401 | htab->group = group; | |
734b6cf9 | 13402 | do |
721956f4 | 13403 | { |
6f20ed8a | 13404 | prev = htab->sec_info[tail->id].u.list; |
734b6cf9 | 13405 | /* Set up this stub group. */ |
6f20ed8a | 13406 | htab->sec_info[tail->id].u.group = group; |
721956f4 | 13407 | } |
734b6cf9 AM |
13408 | while (tail != curr && (tail = prev) != NULL); |
13409 | ||
09f92717 | 13410 | /* But wait, there's more! Input sections up to group_size |
734b6cf9 AM |
13411 | bytes before the stub section can be handled by it too. |
13412 | Don't do this if we have a really large section after the | |
13413 | stubs, as adding more stubs increases the chance that | |
13414 | branches may not reach into the stub section. */ | |
13415 | if (!stubs_always_before_branch && !big_sec) | |
13416 | { | |
13417 | total = 0; | |
13418 | while (prev != NULL | |
13419 | && ((total += tail->output_offset - prev->output_offset) | |
6bee8834 AM |
13420 | < (ppc64_elf_section_data (prev) != NULL |
13421 | && ppc64_elf_section_data (prev)->has_14bit_branch | |
2cdcc330 AM |
13422 | ? (group_size = stub_group_size >> 10) |
13423 | : group_size)) | |
6f20ed8a | 13424 | && htab->sec_info[prev->id].toc_off == curr_toc) |
734b6cf9 AM |
13425 | { |
13426 | tail = prev; | |
6f20ed8a AM |
13427 | prev = htab->sec_info[tail->id].u.list; |
13428 | htab->sec_info[tail->id].u.group = group; | |
734b6cf9 AM |
13429 | } |
13430 | } | |
13431 | tail = prev; | |
721956f4 AM |
13432 | } |
13433 | } | |
0a1b45a2 | 13434 | return true; |
721956f4 AM |
13435 | } |
13436 | ||
58d180e8 AM |
13437 | static const unsigned char glink_eh_frame_cie[] = |
13438 | { | |
13439 | 0, 0, 0, 16, /* length. */ | |
13440 | 0, 0, 0, 0, /* id. */ | |
13441 | 1, /* CIE version. */ | |
13442 | 'z', 'R', 0, /* Augmentation string. */ | |
13443 | 4, /* Code alignment. */ | |
13444 | 0x78, /* Data alignment. */ | |
13445 | 65, /* RA reg. */ | |
13446 | 1, /* Augmentation size. */ | |
13447 | DW_EH_PE_pcrel | DW_EH_PE_sdata4, /* FDE encoding. */ | |
2e0ce1c8 | 13448 | DW_CFA_def_cfa, 1, 0 /* def_cfa: r1 offset 0. */ |
58d180e8 AM |
13449 | }; |
13450 | ||
d969d15f AM |
13451 | /* Stripping output sections is normally done before dynamic section |
13452 | symbols have been allocated. This function is called later, and | |
13453 | handles cases like htab->brlt which is mapped to its own output | |
13454 | section. */ | |
13455 | ||
13456 | static void | |
13457 | maybe_strip_output (struct bfd_link_info *info, asection *isec) | |
13458 | { | |
13459 | if (isec->size == 0 | |
13460 | && isec->output_section->size == 0 | |
53d8967a | 13461 | && !(isec->output_section->flags & SEC_KEEP) |
d969d15f AM |
13462 | && !bfd_section_removed_from_list (info->output_bfd, |
13463 | isec->output_section) | |
13464 | && elf_section_data (isec->output_section)->dynindx == 0) | |
13465 | { | |
13466 | isec->output_section->flags |= SEC_EXCLUDE; | |
13467 | bfd_section_list_remove (info->output_bfd, isec->output_section); | |
13468 | info->output_bfd->section_count--; | |
13469 | } | |
13470 | } | |
13471 | ||
0aac2413 AM |
13472 | /* Stash R_PPC64_RELATIVE reloc at input section SEC, r_offset OFF to |
13473 | the array of such relocs. */ | |
1657026c AM |
13474 | |
13475 | static bool | |
0aac2413 | 13476 | append_relr_off (struct ppc_link_hash_table *htab, asection *sec, bfd_vma off) |
1657026c AM |
13477 | { |
13478 | if (htab->relr_count >= htab->relr_alloc) | |
13479 | { | |
13480 | if (htab->relr_alloc == 0) | |
13481 | htab->relr_alloc = 4096; | |
13482 | else | |
13483 | htab->relr_alloc *= 2; | |
0aac2413 AM |
13484 | htab->relr = bfd_realloc (htab->relr, |
13485 | htab->relr_alloc * sizeof (*htab->relr)); | |
13486 | if (htab->relr == NULL) | |
1657026c AM |
13487 | return false; |
13488 | } | |
0aac2413 AM |
13489 | htab->relr[htab->relr_count].sec = sec; |
13490 | htab->relr[htab->relr_count].off = off; | |
13491 | htab->relr_count++; | |
1657026c AM |
13492 | return true; |
13493 | } | |
13494 | ||
0aac2413 AM |
13495 | /* qsort comparator for bfd_vma args. */ |
13496 | ||
13497 | static int | |
13498 | compare_relr_address (const void *arg1, const void *arg2) | |
13499 | { | |
13500 | bfd_vma a = *(bfd_vma *) arg1; | |
13501 | bfd_vma b = *(bfd_vma *) arg2; | |
13502 | return a < b ? -1 : a > b ? 1 : 0; | |
13503 | } | |
13504 | ||
13505 | /* Produce a malloc'd sorted array of reloc addresses from the info | |
13506 | stored by append_relr_off. */ | |
13507 | ||
13508 | static bfd_vma * | |
13509 | sort_relr (struct ppc_link_hash_table *htab) | |
13510 | { | |
13511 | bfd_vma *addr = bfd_malloc (htab->relr_count * sizeof (*addr)); | |
13512 | if (addr == NULL) | |
13513 | return NULL; | |
13514 | ||
13515 | for (size_t i = 0; i < htab->relr_count; i++) | |
13516 | addr[i] = (htab->relr[i].sec->output_section->vma | |
13517 | + htab->relr[i].sec->output_offset | |
13518 | + htab->relr[i].off); | |
13519 | ||
13520 | if (htab->relr_count > 1) | |
13521 | qsort (addr, htab->relr_count, sizeof (*addr), compare_relr_address); | |
13522 | ||
13523 | return addr; | |
13524 | } | |
13525 | ||
13526 | /* Look over GOT and PLT entries saved on elf_local_got_ents for all | |
e26ff4b5 | 13527 | input files, stashing info about needed relative relocs. */ |
0aac2413 | 13528 | |
1657026c AM |
13529 | static bool |
13530 | got_and_plt_relr_for_local_syms (struct bfd_link_info *info) | |
13531 | { | |
13532 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
13533 | bfd *ibfd; | |
13534 | ||
13535 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next) | |
13536 | { | |
13537 | struct got_entry **lgot_ents, **lgot, **end_lgot_ents; | |
13538 | struct plt_entry **local_plt, **lplt, **end_local_plt; | |
13539 | Elf_Internal_Shdr *symtab_hdr; | |
13540 | bfd_size_type locsymcount; | |
3a3a4c1f AM |
13541 | Elf_Internal_Sym *local_syms; |
13542 | Elf_Internal_Sym *isym; | |
1657026c AM |
13543 | struct plt_entry *pent; |
13544 | struct got_entry *gent; | |
13545 | ||
13546 | if (!is_ppc64_elf (ibfd)) | |
13547 | continue; | |
13548 | ||
13549 | lgot_ents = elf_local_got_ents (ibfd); | |
13550 | if (!lgot_ents) | |
13551 | continue; | |
13552 | ||
13553 | symtab_hdr = &elf_symtab_hdr (ibfd); | |
13554 | locsymcount = symtab_hdr->sh_info; | |
3a3a4c1f AM |
13555 | local_syms = (Elf_Internal_Sym *) symtab_hdr->contents; |
13556 | if (local_syms == NULL && locsymcount != 0) | |
13557 | { | |
13558 | local_syms = bfd_elf_get_elf_syms (ibfd, symtab_hdr, locsymcount, | |
13559 | 0, NULL, NULL, NULL); | |
13560 | if (local_syms == NULL) | |
13561 | return false; | |
13562 | } | |
1657026c AM |
13563 | end_lgot_ents = lgot_ents + locsymcount; |
13564 | local_plt = (struct plt_entry **) end_lgot_ents; | |
13565 | end_local_plt = local_plt + locsymcount; | |
3a3a4c1f AM |
13566 | for (lgot = lgot_ents, isym = local_syms; |
13567 | lgot < end_lgot_ents; | |
13568 | ++lgot, ++isym) | |
1657026c AM |
13569 | for (gent = *lgot; gent != NULL; gent = gent->next) |
13570 | if (!gent->is_indirect | |
13571 | && gent->tls_type == 0 | |
3a3a4c1f AM |
13572 | && gent->got.offset != (bfd_vma) -1 |
13573 | && isym->st_shndx != SHN_ABS) | |
1657026c AM |
13574 | { |
13575 | asection *got = ppc64_elf_tdata (gent->owner)->got; | |
0aac2413 | 13576 | if (!append_relr_off (htab, got, gent->got.offset)) |
1657026c AM |
13577 | { |
13578 | htab->stub_error = true; | |
13579 | return false; | |
13580 | } | |
13581 | } | |
13582 | ||
13583 | if (!htab->opd_abi) | |
3a3a4c1f AM |
13584 | for (lplt = local_plt, isym = local_syms; |
13585 | lplt < end_local_plt; | |
13586 | ++lplt, ++isym) | |
1657026c | 13587 | for (pent = *lplt; pent != NULL; pent = pent->next) |
3a3a4c1f AM |
13588 | if (pent->plt.offset != (bfd_vma) -1 |
13589 | && ELF_ST_TYPE (isym->st_info) != STT_GNU_IFUNC) | |
1657026c | 13590 | { |
0aac2413 | 13591 | if (!append_relr_off (htab, htab->pltlocal, pent->plt.offset)) |
1657026c | 13592 | { |
1657026c AM |
13593 | if (symtab_hdr->contents != (unsigned char *) local_syms) |
13594 | free (local_syms); | |
13595 | return false; | |
13596 | } | |
1657026c AM |
13597 | } |
13598 | ||
13599 | if (local_syms != NULL | |
13600 | && symtab_hdr->contents != (unsigned char *) local_syms) | |
13601 | { | |
13602 | if (!info->keep_memory) | |
13603 | free (local_syms); | |
13604 | else | |
13605 | symtab_hdr->contents = (unsigned char *) local_syms; | |
13606 | } | |
13607 | } | |
13608 | return true; | |
13609 | } | |
13610 | ||
0aac2413 AM |
13611 | /* Stash info about needed GOT and PLT entry relative relocs for |
13612 | global symbol H. */ | |
13613 | ||
1657026c AM |
13614 | static bool |
13615 | got_and_plt_relr (struct elf_link_hash_entry *h, void *inf) | |
13616 | { | |
13617 | struct bfd_link_info *info; | |
13618 | struct ppc_link_hash_table *htab; | |
13619 | struct plt_entry *pent; | |
13620 | struct got_entry *gent; | |
13621 | ||
13622 | if (h->root.type == bfd_link_hash_indirect) | |
13623 | return true; | |
13624 | ||
13625 | info = (struct bfd_link_info *) inf; | |
13626 | htab = ppc_hash_table (info); | |
13627 | if (htab == NULL) | |
13628 | return false; | |
13629 | ||
13630 | if (h->type != STT_GNU_IFUNC | |
13631 | && h->def_regular | |
13632 | && (h->root.type == bfd_link_hash_defined | |
13633 | || h->root.type == bfd_link_hash_defweak)) | |
13634 | { | |
3a3a4c1f AM |
13635 | if ((!htab->elf.dynamic_sections_created |
13636 | || h->dynindx == -1 | |
13637 | || SYMBOL_REFERENCES_LOCAL (info, h)) | |
13638 | && !bfd_is_abs_symbol (&h->root)) | |
1657026c AM |
13639 | for (gent = h->got.glist; gent != NULL; gent = gent->next) |
13640 | if (!gent->is_indirect | |
13641 | && gent->tls_type == 0 | |
13642 | && gent->got.offset != (bfd_vma) -1) | |
13643 | { | |
13644 | asection *got = ppc64_elf_tdata (gent->owner)->got; | |
0aac2413 | 13645 | if (!append_relr_off (htab, got, gent->got.offset)) |
1657026c AM |
13646 | { |
13647 | htab->stub_error = true; | |
13648 | return false; | |
13649 | } | |
13650 | } | |
13651 | ||
13652 | if (!htab->opd_abi | |
13653 | && use_local_plt (info, h)) | |
13654 | for (pent = h->plt.plist; pent != NULL; pent = pent->next) | |
13655 | if (pent->plt.offset != (bfd_vma) -1) | |
13656 | { | |
0aac2413 | 13657 | if (!append_relr_off (htab, htab->pltlocal, pent->plt.offset)) |
1657026c AM |
13658 | { |
13659 | htab->stub_error = true; | |
13660 | return false; | |
13661 | } | |
13662 | } | |
13663 | } | |
13664 | return true; | |
13665 | } | |
13666 | ||
721956f4 AM |
13667 | /* Determine and set the size of the stub section for a final link. |
13668 | ||
13669 | The basic idea here is to examine all the relocations looking for | |
13670 | PC-relative calls to a target that is unreachable with a "bl" | |
13671 | instruction. */ | |
13672 | ||
0a1b45a2 | 13673 | bool |
e7d1c40c | 13674 | ppc64_elf_size_stubs (struct bfd_link_info *info) |
721956f4 AM |
13675 | { |
13676 | bfd_size_type stub_group_size; | |
0a1b45a2 | 13677 | bool stubs_always_before_branch; |
721956f4 AM |
13678 | struct ppc_link_hash_table *htab = ppc_hash_table (info); |
13679 | ||
4dfe6ac6 | 13680 | if (htab == NULL) |
0a1b45a2 | 13681 | return false; |
4dfe6ac6 | 13682 | |
e10a07b3 AM |
13683 | if (htab->params->power10_stubs == -1 && !htab->has_power10_relocs) |
13684 | htab->params->power10_stubs = 0; | |
13685 | ||
0e1862bb | 13686 | if (htab->params->plt_thread_safe == -1 && !bfd_link_executable (info)) |
e7d1c40c | 13687 | htab->params->plt_thread_safe = 1; |
b9e5796b | 13688 | if (!htab->opd_abi) |
e7d1c40c AM |
13689 | htab->params->plt_thread_safe = 0; |
13690 | else if (htab->params->plt_thread_safe == -1) | |
794e51c0 | 13691 | { |
e2458743 | 13692 | static const char *const thread_starter[] = |
794e51c0 AM |
13693 | { |
13694 | "pthread_create", | |
13695 | /* libstdc++ */ | |
13696 | "_ZNSt6thread15_M_start_threadESt10shared_ptrINS_10_Impl_baseEE", | |
13697 | /* librt */ | |
13698 | "aio_init", "aio_read", "aio_write", "aio_fsync", "lio_listio", | |
13699 | "mq_notify", "create_timer", | |
13700 | /* libanl */ | |
13701 | "getaddrinfo_a", | |
13702 | /* libgomp */ | |
2300b5a1 | 13703 | "GOMP_parallel", |
794e51c0 | 13704 | "GOMP_parallel_start", |
2300b5a1 | 13705 | "GOMP_parallel_loop_static", |
794e51c0 | 13706 | "GOMP_parallel_loop_static_start", |
2300b5a1 | 13707 | "GOMP_parallel_loop_dynamic", |
794e51c0 | 13708 | "GOMP_parallel_loop_dynamic_start", |
2300b5a1 | 13709 | "GOMP_parallel_loop_guided", |
794e51c0 | 13710 | "GOMP_parallel_loop_guided_start", |
2300b5a1 | 13711 | "GOMP_parallel_loop_runtime", |
794e51c0 | 13712 | "GOMP_parallel_loop_runtime_start", |
2300b5a1 | 13713 | "GOMP_parallel_sections", |
68ffbac6 | 13714 | "GOMP_parallel_sections_start", |
f9dffbf0 AM |
13715 | /* libgo */ |
13716 | "__go_go", | |
794e51c0 AM |
13717 | }; |
13718 | unsigned i; | |
13719 | ||
a4b6fadd | 13720 | for (i = 0; i < ARRAY_SIZE (thread_starter); i++) |
794e51c0 AM |
13721 | { |
13722 | struct elf_link_hash_entry *h; | |
13723 | h = elf_link_hash_lookup (&htab->elf, thread_starter[i], | |
0a1b45a2 | 13724 | false, false, true); |
e7d1c40c AM |
13725 | htab->params->plt_thread_safe = h != NULL && h->ref_regular; |
13726 | if (htab->params->plt_thread_safe) | |
794e51c0 AM |
13727 | break; |
13728 | } | |
13729 | } | |
e7d1c40c AM |
13730 | stubs_always_before_branch = htab->params->group_size < 0; |
13731 | if (htab->params->group_size < 0) | |
13732 | stub_group_size = -htab->params->group_size; | |
721956f4 | 13733 | else |
e7d1c40c | 13734 | stub_group_size = htab->params->group_size; |
721956f4 | 13735 | |
6f20ed8a | 13736 | if (!group_sections (info, stub_group_size, stubs_always_before_branch)) |
0a1b45a2 | 13737 | return false; |
721956f4 | 13738 | |
a804e476 AM |
13739 | htab->tga_group = NULL; |
13740 | if (!htab->params->no_tls_get_addr_regsave | |
13741 | && htab->tga_desc_fd != NULL | |
13742 | && (htab->tga_desc_fd->elf.root.type == bfd_link_hash_undefined | |
13743 | || htab->tga_desc_fd->elf.root.type == bfd_link_hash_undefweak) | |
13744 | && htab->tls_get_addr_fd != NULL | |
13745 | && is_static_defined (&htab->tls_get_addr_fd->elf)) | |
13746 | { | |
13747 | asection *sym_sec, *code_sec, *stub_sec; | |
13748 | bfd_vma sym_value; | |
13749 | struct _opd_sec_data *opd; | |
13750 | ||
13751 | sym_sec = htab->tls_get_addr_fd->elf.root.u.def.section; | |
13752 | sym_value = defined_sym_val (&htab->tls_get_addr_fd->elf); | |
13753 | code_sec = sym_sec; | |
13754 | opd = get_opd_info (sym_sec); | |
13755 | if (opd != NULL) | |
0a1b45a2 | 13756 | opd_entry_value (sym_sec, sym_value, &code_sec, NULL, false); |
a804e476 AM |
13757 | htab->tga_group = htab->sec_info[code_sec->id].u.group; |
13758 | stub_sec = (*htab->params->add_stub_section) (".tga_desc.stub", | |
13759 | htab->tga_group->link_sec); | |
13760 | if (stub_sec == NULL) | |
0a1b45a2 | 13761 | return false; |
a804e476 AM |
13762 | htab->tga_group->stub_sec = stub_sec; |
13763 | ||
13764 | htab->tga_desc_fd->elf.root.type = bfd_link_hash_defined; | |
13765 | htab->tga_desc_fd->elf.root.u.def.section = stub_sec; | |
13766 | htab->tga_desc_fd->elf.root.u.def.value = 0; | |
13767 | htab->tga_desc_fd->elf.type = STT_FUNC; | |
13768 | htab->tga_desc_fd->elf.def_regular = 1; | |
13769 | htab->tga_desc_fd->elf.non_elf = 0; | |
0a1b45a2 | 13770 | _bfd_elf_link_hash_hide_symbol (info, &htab->tga_desc_fd->elf, true); |
a804e476 AM |
13771 | } |
13772 | ||
c9301e31 | 13773 | /* Loop until no stubs added. After iteration 20 of this loop we may |
0441f94f | 13774 | exit on a stub section shrinking. */ |
c9301e31 | 13775 | |
721956f4 AM |
13776 | while (1) |
13777 | { | |
13778 | bfd *input_bfd; | |
13779 | unsigned int bfd_indx; | |
a4b6fadd | 13780 | struct map_stub *group; |
721956f4 AM |
13781 | |
13782 | htab->stub_iteration += 1; | |
1657026c | 13783 | htab->relr_count = 0; |
721956f4 AM |
13784 | |
13785 | for (input_bfd = info->input_bfds, bfd_indx = 0; | |
13786 | input_bfd != NULL; | |
c72f2fb2 | 13787 | input_bfd = input_bfd->link.next, bfd_indx++) |
721956f4 AM |
13788 | { |
13789 | Elf_Internal_Shdr *symtab_hdr; | |
13790 | asection *section; | |
6cdc0ccc | 13791 | Elf_Internal_Sym *local_syms = NULL; |
721956f4 | 13792 | |
0c8d6e5c | 13793 | if (!is_ppc64_elf (input_bfd)) |
67f93c31 AM |
13794 | continue; |
13795 | ||
721956f4 | 13796 | /* We'll need the symbol table in a second. */ |
0ffa91dd | 13797 | symtab_hdr = &elf_symtab_hdr (input_bfd); |
721956f4 AM |
13798 | if (symtab_hdr->sh_info == 0) |
13799 | continue; | |
13800 | ||
721956f4 AM |
13801 | /* Walk over each section attached to the input bfd. */ |
13802 | for (section = input_bfd->sections; | |
13803 | section != NULL; | |
13804 | section = section->next) | |
13805 | { | |
721956f4 | 13806 | Elf_Internal_Rela *internal_relocs, *irelaend, *irela; |
1657026c | 13807 | bool is_opd; |
721956f4 AM |
13808 | |
13809 | /* If there aren't any relocs, then there's nothing more | |
13810 | to do. */ | |
13811 | if ((section->flags & SEC_RELOC) == 0 | |
12c0f757 AM |
13812 | || (section->flags & SEC_ALLOC) == 0 |
13813 | || (section->flags & SEC_LOAD) == 0 | |
721956f4 AM |
13814 | || section->reloc_count == 0) |
13815 | continue; | |
13816 | ||
1657026c AM |
13817 | if (!info->enable_dt_relr |
13818 | && (section->flags & SEC_CODE) == 0) | |
13819 | continue; | |
13820 | ||
721956f4 AM |
13821 | /* If this section is a link-once section that will be |
13822 | discarded, then don't create any stubs. */ | |
13823 | if (section->output_section == NULL | |
927be08e | 13824 | || section->output_section->owner != info->output_bfd) |
721956f4 AM |
13825 | continue; |
13826 | ||
1e2f5b6e AM |
13827 | /* Get the relocs. */ |
13828 | internal_relocs | |
4ce794b7 | 13829 | = _bfd_elf_link_read_relocs (input_bfd, section, NULL, NULL, |
45d6a902 | 13830 | info->keep_memory); |
721956f4 | 13831 | if (internal_relocs == NULL) |
1e2f5b6e | 13832 | goto error_ret_free_local; |
721956f4 | 13833 | |
1657026c AM |
13834 | is_opd = ppc64_elf_section_data (section)->sec_type == sec_opd; |
13835 | ||
721956f4 AM |
13836 | /* Now examine each relocation. */ |
13837 | irela = internal_relocs; | |
13838 | irelaend = irela + section->reloc_count; | |
13839 | for (; irela < irelaend; irela++) | |
13840 | { | |
4ce794b7 AM |
13841 | enum elf_ppc64_reloc_type r_type; |
13842 | unsigned int r_indx; | |
7aba54da | 13843 | struct ppc_stub_type stub_type; |
721956f4 | 13844 | struct ppc_stub_hash_entry *stub_entry; |
8387904d | 13845 | asection *sym_sec, *code_sec; |
e054468f | 13846 | bfd_vma sym_value, code_value; |
721956f4 | 13847 | bfd_vma destination; |
6911b7dc | 13848 | unsigned long local_off; |
0a1b45a2 | 13849 | bool ok_dest; |
721956f4 | 13850 | struct ppc_link_hash_entry *hash; |
8387904d | 13851 | struct ppc_link_hash_entry *fdh; |
411e1bfb AM |
13852 | struct elf_link_hash_entry *h; |
13853 | Elf_Internal_Sym *sym; | |
721956f4 AM |
13854 | char *stub_name; |
13855 | const asection *id_sec; | |
74f0fb50 | 13856 | struct _opd_sec_data *opd; |
e054468f | 13857 | struct plt_entry *plt_ent; |
721956f4 AM |
13858 | |
13859 | r_type = ELF64_R_TYPE (irela->r_info); | |
13860 | r_indx = ELF64_R_SYM (irela->r_info); | |
13861 | ||
4ce794b7 | 13862 | if (r_type >= R_PPC64_max) |
721956f4 AM |
13863 | { |
13864 | bfd_set_error (bfd_error_bad_value); | |
6cdc0ccc | 13865 | goto error_ret_free_internal; |
721956f4 AM |
13866 | } |
13867 | ||
13868 | /* Only look for stubs on branch instructions. */ | |
1657026c AM |
13869 | switch (r_type) |
13870 | { | |
13871 | default: | |
13872 | continue; | |
13873 | ||
13874 | case R_PPC64_REL24: | |
13875 | case R_PPC64_REL24_NOTOC: | |
13876 | case R_PPC64_REL24_P9NOTOC: | |
13877 | case R_PPC64_REL14: | |
13878 | case R_PPC64_REL14_BRTAKEN: | |
13879 | case R_PPC64_REL14_BRNTAKEN: | |
13880 | if ((section->flags & SEC_CODE) != 0) | |
13881 | break; | |
13882 | continue; | |
13883 | ||
13884 | case R_PPC64_ADDR64: | |
13885 | case R_PPC64_TOC: | |
13886 | if (info->enable_dt_relr | |
13887 | && irela->r_offset % 2 == 0 | |
13888 | && section->alignment_power != 0) | |
13889 | break; | |
13890 | continue; | |
13891 | } | |
721956f4 AM |
13892 | |
13893 | /* Now determine the call target, its name, value, | |
13894 | section. */ | |
411e1bfb AM |
13895 | if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, |
13896 | r_indx, input_bfd)) | |
13897 | goto error_ret_free_internal; | |
411e1bfb | 13898 | |
1657026c AM |
13899 | if (r_type == R_PPC64_ADDR64 || r_type == R_PPC64_TOC) |
13900 | { | |
13901 | /* Only locally defined symbols can possibly use | |
13902 | relative relocations. */ | |
13903 | bfd_vma r_offset; | |
13904 | if ((sym_sec == NULL | |
13905 | || sym_sec->output_section == NULL) | |
13906 | /* No symbol is OK too. */ | |
13907 | && !(sym != NULL && sym->st_shndx == 0) | |
13908 | /* Hack for __ehdr_start, which is undefined | |
13909 | at this point. */ | |
13910 | && !(h != NULL && h->root.linker_def)) | |
13911 | continue; | |
13912 | if (NO_OPD_RELOCS && is_opd) | |
13913 | continue; | |
13914 | if (!is_opd | |
13915 | && r_type == R_PPC64_ADDR64) | |
13916 | { | |
13917 | if (h != NULL | |
13918 | ? h->type == STT_GNU_IFUNC | |
13919 | : ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC) | |
13920 | continue; | |
3a3a4c1f AM |
13921 | if (h != NULL |
13922 | ? bfd_is_abs_symbol (&h->root) | |
13923 | : sym->st_shndx == SHN_ABS) | |
13924 | continue; | |
1657026c AM |
13925 | if (h != NULL |
13926 | && !SYMBOL_REFERENCES_LOCAL (info, h)) | |
13927 | continue; | |
13928 | } | |
13929 | r_offset = _bfd_elf_section_offset (info->output_bfd, | |
13930 | info, | |
13931 | section, | |
13932 | irela->r_offset); | |
13933 | if (r_offset >= (bfd_vma) -2) | |
13934 | continue; | |
0aac2413 | 13935 | if (!append_relr_off (htab, section, r_offset)) |
1657026c AM |
13936 | goto error_ret_free_internal; |
13937 | continue; | |
13938 | } | |
13939 | ||
13940 | hash = ppc_elf_hash_entry (h); | |
0a1b45a2 | 13941 | ok_dest = false; |
8387904d | 13942 | fdh = NULL; |
7fe2b9a6 | 13943 | sym_value = 0; |
411e1bfb | 13944 | if (hash == NULL) |
721956f4 | 13945 | { |
411e1bfb | 13946 | sym_value = sym->st_value; |
c27b8c2a AM |
13947 | if (sym_sec != NULL |
13948 | && sym_sec->output_section != NULL) | |
0a1b45a2 | 13949 | ok_dest = true; |
721956f4 | 13950 | } |
7fe2b9a6 AM |
13951 | else if (hash->elf.root.type == bfd_link_hash_defined |
13952 | || hash->elf.root.type == bfd_link_hash_defweak) | |
13953 | { | |
13954 | sym_value = hash->elf.root.u.def.value; | |
13955 | if (sym_sec->output_section != NULL) | |
0a1b45a2 | 13956 | ok_dest = true; |
7fe2b9a6 AM |
13957 | } |
13958 | else if (hash->elf.root.type == bfd_link_hash_undefweak | |
13959 | || hash->elf.root.type == bfd_link_hash_undefined) | |
721956f4 | 13960 | { |
99877b66 | 13961 | /* Recognise an old ABI func code entry sym, and |
7fe2b9a6 AM |
13962 | use the func descriptor sym instead if it is |
13963 | defined. */ | |
ceb1f1ef | 13964 | if (hash->elf.root.root.string[0] == '.' |
8c5b4e52 | 13965 | && hash->oh != NULL) |
8387904d | 13966 | { |
8c5b4e52 | 13967 | fdh = ppc_follow_link (hash->oh); |
8387904d AM |
13968 | if (fdh->elf.root.type == bfd_link_hash_defined |
13969 | || fdh->elf.root.type == bfd_link_hash_defweak) | |
13970 | { | |
13971 | sym_sec = fdh->elf.root.u.def.section; | |
13972 | sym_value = fdh->elf.root.u.def.value; | |
13973 | if (sym_sec->output_section != NULL) | |
0a1b45a2 | 13974 | ok_dest = true; |
8387904d | 13975 | } |
99877b66 AM |
13976 | else |
13977 | fdh = NULL; | |
8387904d | 13978 | } |
7fe2b9a6 AM |
13979 | } |
13980 | else | |
13981 | { | |
13982 | bfd_set_error (bfd_error_bad_value); | |
13983 | goto error_ret_free_internal; | |
721956f4 AM |
13984 | } |
13985 | ||
8843416a | 13986 | destination = 0; |
6911b7dc | 13987 | local_off = 0; |
8843416a AM |
13988 | if (ok_dest) |
13989 | { | |
13990 | sym_value += irela->r_addend; | |
13991 | destination = (sym_value | |
13992 | + sym_sec->output_offset | |
13993 | + sym_sec->output_section->vma); | |
6911b7dc AM |
13994 | local_off = PPC64_LOCAL_ENTRY_OFFSET (hash |
13995 | ? hash->elf.other | |
13996 | : sym->st_other); | |
8843416a AM |
13997 | } |
13998 | ||
8387904d | 13999 | code_sec = sym_sec; |
e054468f | 14000 | code_value = sym_value; |
74f0fb50 AM |
14001 | opd = get_opd_info (sym_sec); |
14002 | if (opd != NULL) | |
8387904d AM |
14003 | { |
14004 | bfd_vma dest; | |
14005 | ||
74f0fb50 | 14006 | if (hash == NULL && opd->adjust != NULL) |
8387904d | 14007 | { |
51aecdc5 | 14008 | long adjust = opd->adjust[OPD_NDX (sym_value)]; |
8387904d AM |
14009 | if (adjust == -1) |
14010 | continue; | |
e054468f | 14011 | code_value += adjust; |
8387904d AM |
14012 | sym_value += adjust; |
14013 | } | |
14014 | dest = opd_entry_value (sym_sec, sym_value, | |
0a1b45a2 | 14015 | &code_sec, &code_value, false); |
8387904d AM |
14016 | if (dest != (bfd_vma) -1) |
14017 | { | |
14018 | destination = dest; | |
14019 | if (fdh != NULL) | |
14020 | { | |
14021 | /* Fixup old ABI sym to point at code | |
14022 | entry. */ | |
99877b66 | 14023 | hash->elf.root.type = bfd_link_hash_defweak; |
8387904d | 14024 | hash->elf.root.u.def.section = code_sec; |
e054468f | 14025 | hash->elf.root.u.def.value = code_value; |
8387904d AM |
14026 | } |
14027 | } | |
14028 | } | |
14029 | ||
721956f4 | 14030 | /* Determine what (if any) linker stub is needed. */ |
e054468f | 14031 | plt_ent = NULL; |
7aba54da AM |
14032 | stub_type.main = ppc_type_of_stub (section, irela, &hash, |
14033 | &plt_ent, destination, | |
14034 | local_off); | |
14035 | stub_type.sub = ppc_stub_toc; | |
14036 | stub_type.r2save = 0; | |
14037 | ||
14038 | if (r_type == R_PPC64_REL24_NOTOC | |
14039 | || r_type == R_PPC64_REL24_P9NOTOC) | |
05d0e962 | 14040 | { |
7aba54da AM |
14041 | enum ppc_stub_sub_type notoc = ppc_stub_notoc; |
14042 | if (htab->params->power10_stubs == 0 | |
14043 | || (r_type == R_PPC64_REL24_P9NOTOC | |
14044 | && htab->params->power10_stubs != 1)) | |
14045 | notoc = ppc_stub_p9notoc; | |
14046 | if (stub_type.main == ppc_stub_plt_call) | |
14047 | stub_type.sub = notoc; | |
14048 | else if (stub_type.main == ppc_stub_long_branch | |
05d0e962 AM |
14049 | || (code_sec != NULL |
14050 | && code_sec->output_section != NULL | |
14051 | && (((hash ? hash->elf.other : sym->st_other) | |
14052 | & STO_PPC64_LOCAL_MASK) | |
4a4e7361 | 14053 | > 1 << STO_PPC64_LOCAL_BIT))) |
7aba54da AM |
14054 | { |
14055 | stub_type.main = ppc_stub_long_branch; | |
14056 | stub_type.sub = notoc; | |
14057 | stub_type.r2save = 0; | |
14058 | } | |
05d0e962 | 14059 | } |
7aba54da | 14060 | else if (stub_type.main != ppc_stub_plt_call) |
ad8e1ba5 AM |
14061 | { |
14062 | /* Check whether we need a TOC adjusting stub. | |
14063 | Since the linker pastes together pieces from | |
14064 | different object files when creating the | |
14065 | _init and _fini functions, it may be that a | |
14066 | call to what looks like a local sym is in | |
14067 | fact a call needing a TOC adjustment. */ | |
33cb30a1 AM |
14068 | if ((code_sec != NULL |
14069 | && code_sec->output_section != NULL | |
33cb30a1 | 14070 | && (code_sec->has_toc_reloc |
918dc783 AM |
14071 | || code_sec->makes_toc_func_call) |
14072 | && (htab->sec_info[code_sec->id].toc_off | |
14073 | != htab->sec_info[section->id].toc_off)) | |
33cb30a1 AM |
14074 | || (((hash ? hash->elf.other : sym->st_other) |
14075 | & STO_PPC64_LOCAL_MASK) | |
14076 | == 1 << STO_PPC64_LOCAL_BIT)) | |
7aba54da AM |
14077 | { |
14078 | stub_type.main = ppc_stub_long_branch; | |
14079 | stub_type.sub = ppc_stub_toc; | |
14080 | stub_type.r2save = 1; | |
14081 | } | |
ad8e1ba5 AM |
14082 | } |
14083 | ||
7aba54da | 14084 | if (stub_type.main == ppc_stub_none) |
721956f4 AM |
14085 | continue; |
14086 | ||
411e1bfb | 14087 | /* __tls_get_addr calls might be eliminated. */ |
7aba54da | 14088 | if (stub_type.main != ppc_stub_plt_call |
411e1bfb | 14089 | && hash != NULL |
ed7007c1 | 14090 | && is_tls_get_addr (&hash->elf, htab) |
411e1bfb AM |
14091 | && section->has_tls_reloc |
14092 | && irela != internal_relocs) | |
14093 | { | |
14094 | /* Get tls info. */ | |
f961d9dd | 14095 | unsigned char *tls_mask; |
411e1bfb | 14096 | |
3a71aa26 | 14097 | if (!get_tls_mask (&tls_mask, NULL, NULL, &local_syms, |
411e1bfb AM |
14098 | irela - 1, input_bfd)) |
14099 | goto error_ret_free_internal; | |
abc489c6 AM |
14100 | if ((*tls_mask & TLS_TLS) != 0 |
14101 | && (*tls_mask & (TLS_GD | TLS_LD)) == 0) | |
411e1bfb AM |
14102 | continue; |
14103 | } | |
14104 | ||
7aba54da AM |
14105 | if (stub_type.main == ppc_stub_plt_call |
14106 | && stub_type.sub == ppc_stub_toc) | |
794e51c0 | 14107 | { |
6e1816be AM |
14108 | if (!htab->opd_abi |
14109 | && htab->params->plt_localentry0 != 0 | |
14110 | && is_elfv2_localentry0 (&hash->elf)) | |
14111 | htab->has_plt_localentry0 = 1; | |
14112 | else if (irela + 1 < irelaend | |
14113 | && irela[1].r_offset == irela->r_offset + 4 | |
14114 | && (ELF64_R_TYPE (irela[1].r_info) | |
14115 | == R_PPC64_TOCSAVE)) | |
f378ab09 AM |
14116 | { |
14117 | if (!tocsave_find (htab, INSERT, | |
14118 | &local_syms, irela + 1, input_bfd)) | |
14119 | goto error_ret_free_internal; | |
14120 | } | |
f378ab09 | 14121 | else |
7aba54da | 14122 | stub_type.r2save = 1; |
794e51c0 | 14123 | } |
3b421ab3 | 14124 | |
721956f4 | 14125 | /* Support for grouping stub sections. */ |
6f20ed8a | 14126 | id_sec = htab->sec_info[section->id].u.group->link_sec; |
721956f4 AM |
14127 | |
14128 | /* Get the name of this stub. */ | |
14129 | stub_name = ppc_stub_name (id_sec, sym_sec, hash, irela); | |
14130 | if (!stub_name) | |
14131 | goto error_ret_free_internal; | |
14132 | ||
14133 | stub_entry = ppc_stub_hash_lookup (&htab->stub_hash_table, | |
0a1b45a2 | 14134 | stub_name, false, false); |
721956f4 AM |
14135 | if (stub_entry != NULL) |
14136 | { | |
721956f4 | 14137 | free (stub_name); |
7aba54da | 14138 | if (!ppc_merge_stub (htab, stub_entry, stub_type, r_type)) |
e10a07b3 | 14139 | { |
7aba54da AM |
14140 | /* xgettext:c-format */ |
14141 | _bfd_error_handler | |
14142 | (_("%pB: cannot create stub entry %s"), | |
14143 | section->owner, stub_entry->root.string); | |
14144 | goto error_ret_free_internal; | |
e10a07b3 | 14145 | } |
721956f4 AM |
14146 | continue; |
14147 | } | |
14148 | ||
25f53a85 | 14149 | stub_entry = ppc_add_stub (stub_name, section, info); |
721956f4 AM |
14150 | if (stub_entry == NULL) |
14151 | { | |
14152 | free (stub_name); | |
6cdc0ccc AM |
14153 | error_ret_free_internal: |
14154 | if (elf_section_data (section)->relocs == NULL) | |
14155 | free (internal_relocs); | |
14156 | error_ret_free_local: | |
c9594989 AM |
14157 | if (symtab_hdr->contents |
14158 | != (unsigned char *) local_syms) | |
6cdc0ccc | 14159 | free (local_syms); |
0a1b45a2 | 14160 | return false; |
721956f4 AM |
14161 | } |
14162 | ||
7aba54da AM |
14163 | stub_entry->type = stub_type; |
14164 | if (stub_type.main == ppc_stub_plt_call) | |
e054468f | 14165 | { |
05d0e962 AM |
14166 | stub_entry->target_value = sym_value; |
14167 | stub_entry->target_section = sym_sec; | |
e054468f AM |
14168 | } |
14169 | else | |
14170 | { | |
05d0e962 AM |
14171 | stub_entry->target_value = code_value; |
14172 | stub_entry->target_section = code_sec; | |
e054468f | 14173 | } |
721956f4 | 14174 | stub_entry->h = hash; |
e054468f | 14175 | stub_entry->plt_ent = plt_ent; |
2d7ad24e AM |
14176 | stub_entry->symtype |
14177 | = hash ? hash->elf.type : ELF_ST_TYPE (sym->st_info); | |
6911b7dc | 14178 | stub_entry->other = hash ? hash->elf.other : sym->st_other; |
ee75fd95 | 14179 | |
3d58e1fc AM |
14180 | if (hash != NULL |
14181 | && (hash->elf.root.type == bfd_link_hash_defined | |
14182 | || hash->elf.root.type == bfd_link_hash_defweak)) | |
ee75fd95 | 14183 | htab->stub_globals += 1; |
721956f4 AM |
14184 | } |
14185 | ||
14186 | /* We're done with the internal relocs, free them. */ | |
6cdc0ccc | 14187 | if (elf_section_data (section)->relocs != internal_relocs) |
1e2f5b6e | 14188 | free (internal_relocs); |
721956f4 | 14189 | } |
6cdc0ccc AM |
14190 | |
14191 | if (local_syms != NULL | |
14192 | && symtab_hdr->contents != (unsigned char *) local_syms) | |
14193 | { | |
14194 | if (!info->keep_memory) | |
14195 | free (local_syms); | |
14196 | else | |
14197 | symtab_hdr->contents = (unsigned char *) local_syms; | |
14198 | } | |
721956f4 AM |
14199 | } |
14200 | ||
5c3dead3 | 14201 | /* We may have added some stubs. Find out the new size of the |
721956f4 | 14202 | stub sections. */ |
d4aaa2a0 | 14203 | for (group = htab->group; group != NULL; group = group->next) |
df136d64 AM |
14204 | { |
14205 | group->lr_restore = 0; | |
14206 | group->eh_size = 0; | |
14207 | if (group->stub_sec != NULL) | |
14208 | { | |
14209 | asection *stub_sec = group->stub_sec; | |
14210 | ||
9ff8aa7d | 14211 | stub_sec->rawsize = stub_sec->size; |
df136d64 AM |
14212 | stub_sec->size = 0; |
14213 | stub_sec->reloc_count = 0; | |
14214 | stub_sec->flags &= ~SEC_RELOC; | |
14215 | } | |
14216 | } | |
a804e476 AM |
14217 | if (htab->tga_group != NULL) |
14218 | { | |
14219 | /* See emit_tga_desc and emit_tga_desc_eh_frame. */ | |
14220 | htab->tga_group->eh_size | |
14221 | = 1 + 2 + (htab->opd_abi != 0) + 3 + 8 * 2 + 3 + 8 + 3; | |
14222 | htab->tga_group->lr_restore = 23 * 4; | |
14223 | htab->tga_group->stub_sec->size = 24 * 4; | |
14224 | } | |
eea6121a | 14225 | |
9ff8aa7d | 14226 | htab->brlt->rawsize = htab->brlt->size; |
eea6121a | 14227 | htab->brlt->size = 0; |
84f5d08e AM |
14228 | htab->brlt->reloc_count = 0; |
14229 | htab->brlt->flags &= ~SEC_RELOC; | |
ee75fd95 | 14230 | if (htab->relbrlt != NULL) |
eea6121a | 14231 | htab->relbrlt->size = 0; |
721956f4 | 14232 | |
1657026c AM |
14233 | if (htab->elf.srelrdyn != NULL) |
14234 | { | |
9ff8aa7d | 14235 | htab->elf.srelrdyn->rawsize = htab->elf.srelrdyn->size; |
1657026c AM |
14236 | htab->elf.srelrdyn->size = 0; |
14237 | } | |
14238 | ||
0441f94f | 14239 | htab->stub_changed = false; |
ecc741e6 | 14240 | htab->stub_id = 0; |
63bc6f6c | 14241 | bfd_hash_traverse (&htab->stub_hash_table, ppc_size_one_stub, info); |
721956f4 | 14242 | |
a4b6fadd AM |
14243 | for (group = htab->group; group != NULL; group = group->next) |
14244 | if (group->needs_save_res) | |
14245 | group->stub_sec->size += htab->sfpr->size; | |
14246 | ||
176a0d42 AM |
14247 | if (info->emitrelocations |
14248 | && htab->glink != NULL && htab->glink->size != 0) | |
14249 | { | |
14250 | htab->glink->reloc_count = 1; | |
14251 | htab->glink->flags |= SEC_RELOC; | |
14252 | } | |
14253 | ||
58d180e8 AM |
14254 | if (htab->glink_eh_frame != NULL |
14255 | && !bfd_is_abs_section (htab->glink_eh_frame->output_section) | |
2d0d44d5 | 14256 | && htab->glink_eh_frame->output_section->size > 8) |
58d180e8 | 14257 | { |
2e0ce1c8 | 14258 | size_t size = 0, align = 4; |
58d180e8 | 14259 | |
d4aaa2a0 | 14260 | for (group = htab->group; group != NULL; group = group->next) |
df136d64 AM |
14261 | if (group->eh_size != 0) |
14262 | size += (group->eh_size + 17 + align - 1) & -align; | |
58d180e8 | 14263 | if (htab->glink != NULL && htab->glink->size != 0) |
2e0ce1c8 | 14264 | size += (24 + align - 1) & -align; |
58d180e8 | 14265 | if (size != 0) |
2e0ce1c8 AM |
14266 | size += (sizeof (glink_eh_frame_cie) + align - 1) & -align; |
14267 | align = 1ul << htab->glink_eh_frame->output_section->alignment_power; | |
14268 | size = (size + align - 1) & -align; | |
58d180e8 AM |
14269 | htab->glink_eh_frame->rawsize = htab->glink_eh_frame->size; |
14270 | htab->glink_eh_frame->size = size; | |
14271 | } | |
14272 | ||
e7d1c40c | 14273 | if (htab->params->plt_stub_align != 0) |
d4aaa2a0 AM |
14274 | for (group = htab->group; group != NULL; group = group->next) |
14275 | if (group->stub_sec != NULL) | |
691d2e9a AM |
14276 | { |
14277 | int align = abs (htab->params->plt_stub_align); | |
14278 | group->stub_sec->size | |
14279 | = (group->stub_sec->size + (1 << align) - 1) & -(1 << align); | |
14280 | } | |
d4aaa2a0 | 14281 | |
1657026c AM |
14282 | if (htab->elf.srelrdyn != NULL) |
14283 | { | |
14284 | bfd_vma r_offset; | |
14285 | ||
14286 | for (r_offset = 0; r_offset < htab->brlt->size; r_offset += 8) | |
0aac2413 | 14287 | if (!append_relr_off (htab, htab->brlt, r_offset)) |
1657026c AM |
14288 | return false; |
14289 | ||
14290 | if (!got_and_plt_relr_for_local_syms (info)) | |
14291 | return false; | |
14292 | elf_link_hash_traverse (&htab->elf, got_and_plt_relr, info); | |
14293 | if (htab->stub_error) | |
14294 | return false; | |
14295 | ||
0aac2413 AM |
14296 | bfd_vma *relr_addr = sort_relr (htab); |
14297 | if (htab->relr_count != 0 && relr_addr == NULL) | |
14298 | return false; | |
1657026c AM |
14299 | |
14300 | size_t i = 0; | |
14301 | while (i < htab->relr_count) | |
14302 | { | |
0aac2413 | 14303 | bfd_vma base = relr_addr[i]; |
1657026c AM |
14304 | htab->elf.srelrdyn->size += 8; |
14305 | i++; | |
14306 | /* Handle possible duplicate address. This can happen | |
14307 | as sections increase in size when adding stubs. */ | |
14308 | while (i < htab->relr_count | |
0aac2413 | 14309 | && relr_addr[i] == base) |
1657026c AM |
14310 | i++; |
14311 | base += 8; | |
14312 | while (1) | |
14313 | { | |
14314 | size_t start_i = i; | |
14315 | while (i < htab->relr_count | |
0aac2413 AM |
14316 | && relr_addr[i] - base < 63 * 8 |
14317 | && (relr_addr[i] - base) % 8 == 0) | |
1657026c AM |
14318 | i++; |
14319 | if (i == start_i) | |
14320 | break; | |
14321 | htab->elf.srelrdyn->size += 8; | |
14322 | base += 63 * 8; | |
14323 | } | |
14324 | } | |
0aac2413 | 14325 | free (relr_addr); |
1657026c AM |
14326 | } |
14327 | ||
d4aaa2a0 AM |
14328 | for (group = htab->group; group != NULL; group = group->next) |
14329 | if (group->stub_sec != NULL | |
14330 | && group->stub_sec->rawsize != group->stub_sec->size | |
c9301e31 | 14331 | && (htab->stub_iteration <= STUB_SHRINK_ITER |
d4aaa2a0 | 14332 | || group->stub_sec->rawsize < group->stub_sec->size)) |
5c3dead3 AM |
14333 | break; |
14334 | ||
d4aaa2a0 | 14335 | if (group == NULL |
0441f94f AM |
14336 | && (!htab->stub_changed |
14337 | || htab->stub_iteration > STUB_SHRINK_ITER) | |
ba21f564 AM |
14338 | && (htab->brlt->rawsize == htab->brlt->size |
14339 | || (htab->stub_iteration > STUB_SHRINK_ITER | |
14340 | && htab->brlt->rawsize > htab->brlt->size)) | |
1657026c AM |
14341 | && (htab->elf.srelrdyn == NULL |
14342 | || htab->elf.srelrdyn->rawsize == htab->elf.srelrdyn->size | |
14343 | || (htab->stub_iteration > STUB_SHRINK_ITER | |
14344 | && htab->elf.srelrdyn->rawsize > htab->elf.srelrdyn->size)) | |
58d180e8 | 14345 | && (htab->glink_eh_frame == NULL |
a804e476 AM |
14346 | || htab->glink_eh_frame->rawsize == htab->glink_eh_frame->size) |
14347 | && (htab->tga_group == NULL | |
14348 | || htab->stub_iteration > 1)) | |
5c3dead3 AM |
14349 | break; |
14350 | ||
9ff8aa7d AM |
14351 | if (htab->stub_iteration > STUB_SHRINK_ITER) |
14352 | { | |
14353 | for (group = htab->group; group != NULL; group = group->next) | |
14354 | if (group->stub_sec != NULL | |
14355 | && group->stub_sec->size < group->stub_sec->rawsize) | |
14356 | group->stub_sec->size = group->stub_sec->rawsize; | |
14357 | ||
14358 | if (htab->brlt->size < htab->brlt->rawsize) | |
14359 | htab->brlt->size = htab->brlt->rawsize; | |
14360 | ||
14361 | if (htab->elf.srelrdyn != NULL | |
14362 | && htab->elf.srelrdyn->size < htab->elf.srelrdyn->rawsize) | |
14363 | htab->elf.srelrdyn->size = htab->elf.srelrdyn->rawsize; | |
14364 | } | |
14365 | ||
721956f4 | 14366 | /* Ask the linker to do its stuff. */ |
e7d1c40c | 14367 | (*htab->params->layout_sections_again) (); |
721956f4 AM |
14368 | } |
14369 | ||
da44f4e5 AM |
14370 | if (htab->glink_eh_frame != NULL |
14371 | && htab->glink_eh_frame->size != 0) | |
14372 | { | |
14373 | bfd_vma val; | |
14374 | bfd_byte *p, *last_fde; | |
14375 | size_t last_fde_len, size, align, pad; | |
d4aaa2a0 | 14376 | struct map_stub *group; |
da44f4e5 | 14377 | |
df136d64 AM |
14378 | /* It is necessary to at least have a rough outline of the |
14379 | linker generated CIEs and FDEs written before | |
14380 | bfd_elf_discard_info is run, in order for these FDEs to be | |
14381 | indexed in .eh_frame_hdr. */ | |
da44f4e5 AM |
14382 | p = bfd_zalloc (htab->glink_eh_frame->owner, htab->glink_eh_frame->size); |
14383 | if (p == NULL) | |
0a1b45a2 | 14384 | return false; |
da44f4e5 AM |
14385 | htab->glink_eh_frame->contents = p; |
14386 | last_fde = p; | |
2e0ce1c8 | 14387 | align = 4; |
da44f4e5 AM |
14388 | |
14389 | memcpy (p, glink_eh_frame_cie, sizeof (glink_eh_frame_cie)); | |
14390 | /* CIE length (rewrite in case little-endian). */ | |
2e0ce1c8 | 14391 | last_fde_len = ((sizeof (glink_eh_frame_cie) + align - 1) & -align) - 4; |
da44f4e5 | 14392 | bfd_put_32 (htab->elf.dynobj, last_fde_len, p); |
2e0ce1c8 | 14393 | p += last_fde_len + 4; |
da44f4e5 | 14394 | |
d4aaa2a0 | 14395 | for (group = htab->group; group != NULL; group = group->next) |
df136d64 | 14396 | if (group->eh_size != 0) |
da44f4e5 | 14397 | { |
df136d64 | 14398 | group->eh_base = p - htab->glink_eh_frame->contents; |
da44f4e5 | 14399 | last_fde = p; |
df136d64 | 14400 | last_fde_len = ((group->eh_size + 17 + align - 1) & -align) - 4; |
da44f4e5 | 14401 | /* FDE length. */ |
2e0ce1c8 | 14402 | bfd_put_32 (htab->elf.dynobj, last_fde_len, p); |
da44f4e5 AM |
14403 | p += 4; |
14404 | /* CIE pointer. */ | |
14405 | val = p - htab->glink_eh_frame->contents; | |
14406 | bfd_put_32 (htab->elf.dynobj, val, p); | |
14407 | p += 4; | |
14408 | /* Offset to stub section, written later. */ | |
14409 | p += 4; | |
14410 | /* stub section size. */ | |
d4aaa2a0 | 14411 | bfd_put_32 (htab->elf.dynobj, group->stub_sec->size, p); |
da44f4e5 AM |
14412 | p += 4; |
14413 | /* Augmentation. */ | |
14414 | p += 1; | |
df136d64 AM |
14415 | /* Make sure we don't have all nops. This is enough for |
14416 | elf-eh-frame.c to detect the last non-nop opcode. */ | |
14417 | p[group->eh_size - 1] = DW_CFA_advance_loc + 1; | |
d4aaa2a0 | 14418 | p = last_fde + last_fde_len + 4; |
da44f4e5 AM |
14419 | } |
14420 | if (htab->glink != NULL && htab->glink->size != 0) | |
14421 | { | |
14422 | last_fde = p; | |
2e0ce1c8 | 14423 | last_fde_len = ((24 + align - 1) & -align) - 4; |
da44f4e5 | 14424 | /* FDE length. */ |
2e0ce1c8 | 14425 | bfd_put_32 (htab->elf.dynobj, last_fde_len, p); |
da44f4e5 AM |
14426 | p += 4; |
14427 | /* CIE pointer. */ | |
14428 | val = p - htab->glink_eh_frame->contents; | |
14429 | bfd_put_32 (htab->elf.dynobj, val, p); | |
14430 | p += 4; | |
14431 | /* Offset to .glink, written later. */ | |
14432 | p += 4; | |
14433 | /* .glink size. */ | |
14434 | bfd_put_32 (htab->elf.dynobj, htab->glink->size - 8, p); | |
14435 | p += 4; | |
14436 | /* Augmentation. */ | |
14437 | p += 1; | |
14438 | ||
3cd7c7d7 | 14439 | *p++ = DW_CFA_advance_loc + (htab->has_plt_localentry0 ? 3 : 2); |
da44f4e5 AM |
14440 | *p++ = DW_CFA_register; |
14441 | *p++ = 65; | |
9f08fa5c | 14442 | *p++ = htab->opd_abi ? 12 : 0; |
3cd7c7d7 | 14443 | *p++ = DW_CFA_advance_loc + (htab->opd_abi ? 4 : 2); |
da44f4e5 AM |
14444 | *p++ = DW_CFA_restore_extended; |
14445 | *p++ = 65; | |
2e0ce1c8 | 14446 | p += ((24 + align - 1) & -align) - 24; |
da44f4e5 AM |
14447 | } |
14448 | /* Subsume any padding into the last FDE if user .eh_frame | |
14449 | sections are aligned more than glink_eh_frame. Otherwise any | |
14450 | zero padding will be seen as a terminator. */ | |
2e0ce1c8 | 14451 | align = 1ul << htab->glink_eh_frame->output_section->alignment_power; |
da44f4e5 | 14452 | size = p - htab->glink_eh_frame->contents; |
2e0ce1c8 | 14453 | pad = ((size + align - 1) & -align) - size; |
da44f4e5 AM |
14454 | htab->glink_eh_frame->size = size + pad; |
14455 | bfd_put_32 (htab->elf.dynobj, last_fde_len + pad, last_fde); | |
14456 | } | |
14457 | ||
d969d15f | 14458 | maybe_strip_output (info, htab->brlt); |
2efec98b AM |
14459 | if (htab->relbrlt != NULL) |
14460 | maybe_strip_output (info, htab->relbrlt); | |
d969d15f AM |
14461 | if (htab->glink_eh_frame != NULL) |
14462 | maybe_strip_output (info, htab->glink_eh_frame); | |
1657026c AM |
14463 | if (htab->elf.srelrdyn != NULL) |
14464 | maybe_strip_output (info, htab->elf.srelrdyn); | |
721956f4 | 14465 | |
0a1b45a2 | 14466 | return true; |
721956f4 AM |
14467 | } |
14468 | ||
14469 | /* Called after we have determined section placement. If sections | |
805fc799 | 14470 | move, we'll be called again. Provide a value for TOCstart. */ |
721956f4 | 14471 | |
805fc799 | 14472 | bfd_vma |
1c865ab2 | 14473 | ppc64_elf_set_toc (struct bfd_link_info *info, bfd *obfd) |
721956f4 | 14474 | { |
805fc799 | 14475 | asection *s; |
a27e685f | 14476 | bfd_vma TOCstart, adjust; |
721956f4 | 14477 | |
43417696 AM |
14478 | if (info != NULL) |
14479 | { | |
14480 | struct elf_link_hash_entry *h; | |
14481 | struct elf_link_hash_table *htab = elf_hash_table (info); | |
14482 | ||
2cc15b10 | 14483 | if (is_elf_hash_table (&htab->root) |
43417696 AM |
14484 | && htab->hgot != NULL) |
14485 | h = htab->hgot; | |
14486 | else | |
14487 | { | |
2cc15b10 AM |
14488 | h = (struct elf_link_hash_entry *) |
14489 | bfd_link_hash_lookup (&htab->root, ".TOC.", false, false, true); | |
14490 | if (is_elf_hash_table (&htab->root)) | |
43417696 AM |
14491 | htab->hgot = h; |
14492 | } | |
14493 | if (h != NULL | |
14494 | && h->root.type == bfd_link_hash_defined | |
14495 | && !h->root.linker_def | |
2cc15b10 | 14496 | && (!is_elf_hash_table (&htab->root) |
43417696 AM |
14497 | || h->def_regular)) |
14498 | { | |
ed7007c1 | 14499 | TOCstart = defined_sym_val (h) - TOC_BASE_OFF; |
43417696 AM |
14500 | _bfd_set_gp_value (obfd, TOCstart); |
14501 | return TOCstart; | |
14502 | } | |
14503 | } | |
14504 | ||
805fc799 AM |
14505 | /* The TOC consists of sections .got, .toc, .tocbss, .plt in that |
14506 | order. The TOC starts where the first of these sections starts. */ | |
14507 | s = bfd_get_section_by_name (obfd, ".got"); | |
e054468f | 14508 | if (s == NULL || (s->flags & SEC_EXCLUDE) != 0) |
805fc799 | 14509 | s = bfd_get_section_by_name (obfd, ".toc"); |
e054468f | 14510 | if (s == NULL || (s->flags & SEC_EXCLUDE) != 0) |
805fc799 | 14511 | s = bfd_get_section_by_name (obfd, ".tocbss"); |
e054468f | 14512 | if (s == NULL || (s->flags & SEC_EXCLUDE) != 0) |
805fc799 | 14513 | s = bfd_get_section_by_name (obfd, ".plt"); |
e054468f | 14514 | if (s == NULL || (s->flags & SEC_EXCLUDE) != 0) |
805fc799 AM |
14515 | { |
14516 | /* This may happen for | |
14517 | o references to TOC base (SYM@toc / TOC[tc0]) without a | |
14518 | .toc directive | |
14519 | o bad linker script | |
14520 | o --gc-sections and empty TOC sections | |
14521 | ||
14522 | FIXME: Warn user? */ | |
14523 | ||
14524 | /* Look for a likely section. We probably won't even be | |
14525 | using TOCstart. */ | |
14526 | for (s = obfd->sections; s != NULL; s = s->next) | |
e054468f AM |
14527 | if ((s->flags & (SEC_ALLOC | SEC_SMALL_DATA | SEC_READONLY |
14528 | | SEC_EXCLUDE)) | |
805fc799 AM |
14529 | == (SEC_ALLOC | SEC_SMALL_DATA)) |
14530 | break; | |
721956f4 | 14531 | if (s == NULL) |
805fc799 | 14532 | for (s = obfd->sections; s != NULL; s = s->next) |
e054468f | 14533 | if ((s->flags & (SEC_ALLOC | SEC_SMALL_DATA | SEC_EXCLUDE)) |
805fc799 AM |
14534 | == (SEC_ALLOC | SEC_SMALL_DATA)) |
14535 | break; | |
721956f4 | 14536 | if (s == NULL) |
805fc799 | 14537 | for (s = obfd->sections; s != NULL; s = s->next) |
e054468f AM |
14538 | if ((s->flags & (SEC_ALLOC | SEC_READONLY | SEC_EXCLUDE)) |
14539 | == SEC_ALLOC) | |
805fc799 | 14540 | break; |
721956f4 | 14541 | if (s == NULL) |
805fc799 | 14542 | for (s = obfd->sections; s != NULL; s = s->next) |
e054468f | 14543 | if ((s->flags & (SEC_ALLOC | SEC_EXCLUDE)) == SEC_ALLOC) |
805fc799 AM |
14544 | break; |
14545 | } | |
721956f4 | 14546 | |
805fc799 AM |
14547 | TOCstart = 0; |
14548 | if (s != NULL) | |
14549 | TOCstart = s->output_section->vma + s->output_offset; | |
721956f4 | 14550 | |
a27e685f AM |
14551 | /* Force alignment. */ |
14552 | adjust = TOCstart & (TOC_BASE_ALIGN - 1); | |
14553 | TOCstart -= adjust; | |
1c865ab2 AM |
14554 | _bfd_set_gp_value (obfd, TOCstart); |
14555 | ||
810d4e75 | 14556 | if (info != NULL && s != NULL) |
1c865ab2 AM |
14557 | { |
14558 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
14559 | ||
810d4e75 AM |
14560 | if (htab != NULL) |
14561 | { | |
14562 | if (htab->elf.hgot != NULL) | |
14563 | { | |
a27e685f | 14564 | htab->elf.hgot->root.u.def.value = TOC_BASE_OFF - adjust; |
810d4e75 AM |
14565 | htab->elf.hgot->root.u.def.section = s; |
14566 | } | |
14567 | } | |
14568 | else | |
1c865ab2 | 14569 | { |
810d4e75 AM |
14570 | struct bfd_link_hash_entry *bh = NULL; |
14571 | _bfd_generic_link_add_one_symbol (info, obfd, ".TOC.", BSF_GLOBAL, | |
a27e685f | 14572 | s, TOC_BASE_OFF - adjust, |
0a1b45a2 | 14573 | NULL, false, false, &bh); |
1c865ab2 AM |
14574 | } |
14575 | } | |
805fc799 | 14576 | return TOCstart; |
721956f4 AM |
14577 | } |
14578 | ||
a345bc8d | 14579 | /* Called via elf_link_hash_traverse from ppc64_elf_build_stubs to |
49c09209 | 14580 | write out any global entry stubs, and PLT relocations. */ |
a345bc8d | 14581 | |
0a1b45a2 | 14582 | static bool |
49c09209 | 14583 | build_global_entry_stubs_and_plt (struct elf_link_hash_entry *h, void *inf) |
a345bc8d AM |
14584 | { |
14585 | struct bfd_link_info *info; | |
14586 | struct ppc_link_hash_table *htab; | |
49c09209 | 14587 | struct plt_entry *ent; |
a345bc8d AM |
14588 | asection *s; |
14589 | ||
14590 | if (h->root.type == bfd_link_hash_indirect) | |
0a1b45a2 | 14591 | return true; |
a345bc8d | 14592 | |
49c09209 AM |
14593 | info = inf; |
14594 | htab = ppc_hash_table (info); | |
14595 | if (htab == NULL) | |
0a1b45a2 | 14596 | return false; |
49c09209 AM |
14597 | |
14598 | for (ent = h->plt.plist; ent != NULL; ent = ent->next) | |
14599 | if (ent->plt.offset != (bfd_vma) -1) | |
14600 | { | |
14601 | /* This symbol has an entry in the procedure linkage | |
14602 | table. Set it up. */ | |
14603 | Elf_Internal_Rela rela; | |
2d7ad24e | 14604 | asection *plt, *relplt; |
49c09209 AM |
14605 | bfd_byte *loc; |
14606 | ||
30845f11 | 14607 | if (use_local_plt (info, h)) |
49c09209 AM |
14608 | { |
14609 | if (!(h->def_regular | |
14610 | && (h->root.type == bfd_link_hash_defined | |
14611 | || h->root.type == bfd_link_hash_defweak))) | |
14612 | continue; | |
2d7ad24e AM |
14613 | if (h->type == STT_GNU_IFUNC) |
14614 | { | |
14615 | plt = htab->elf.iplt; | |
14616 | relplt = htab->elf.irelplt; | |
0a1b45a2 | 14617 | htab->elf.ifunc_resolvers = true; |
2d7ad24e AM |
14618 | if (htab->opd_abi) |
14619 | rela.r_info = ELF64_R_INFO (0, R_PPC64_JMP_IREL); | |
14620 | else | |
14621 | rela.r_info = ELF64_R_INFO (0, R_PPC64_IRELATIVE); | |
14622 | } | |
49c09209 | 14623 | else |
2d7ad24e AM |
14624 | { |
14625 | plt = htab->pltlocal; | |
1657026c AM |
14626 | relplt = NULL; |
14627 | if (bfd_link_pic (info) | |
14628 | && !(info->enable_dt_relr && !htab->opd_abi)) | |
2d7ad24e AM |
14629 | { |
14630 | relplt = htab->relpltlocal; | |
14631 | if (htab->opd_abi) | |
14632 | rela.r_info = ELF64_R_INFO (0, R_PPC64_JMP_SLOT); | |
14633 | else | |
14634 | rela.r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE); | |
14635 | } | |
2d7ad24e | 14636 | } |
ed7007c1 | 14637 | rela.r_addend = defined_sym_val (h) + ent->addend; |
2d7ad24e AM |
14638 | |
14639 | if (relplt == NULL) | |
14640 | { | |
14641 | loc = plt->contents + ent->plt.offset; | |
14642 | bfd_put_64 (info->output_bfd, rela.r_addend, loc); | |
14643 | if (htab->opd_abi) | |
14644 | { | |
14645 | bfd_vma toc = elf_gp (info->output_bfd); | |
14646 | toc += htab->sec_info[h->root.u.def.section->id].toc_off; | |
14647 | bfd_put_64 (info->output_bfd, toc, loc + 8); | |
14648 | } | |
14649 | } | |
14650 | else | |
14651 | { | |
14652 | rela.r_offset = (plt->output_section->vma | |
14653 | + plt->output_offset | |
14654 | + ent->plt.offset); | |
14655 | loc = relplt->contents + (relplt->reloc_count++ | |
14656 | * sizeof (Elf64_External_Rela)); | |
14657 | bfd_elf64_swap_reloca_out (info->output_bfd, &rela, loc); | |
14658 | } | |
49c09209 AM |
14659 | } |
14660 | else | |
14661 | { | |
14662 | rela.r_offset = (htab->elf.splt->output_section->vma | |
14663 | + htab->elf.splt->output_offset | |
14664 | + ent->plt.offset); | |
14665 | rela.r_info = ELF64_R_INFO (h->dynindx, R_PPC64_JMP_SLOT); | |
14666 | rela.r_addend = ent->addend; | |
14667 | loc = (htab->elf.srelplt->contents | |
14668 | + ((ent->plt.offset - PLT_INITIAL_ENTRY_SIZE (htab)) | |
14669 | / PLT_ENTRY_SIZE (htab) * sizeof (Elf64_External_Rela))); | |
14670 | if (h->type == STT_GNU_IFUNC && is_static_defined (h)) | |
0a1b45a2 | 14671 | htab->elf.ifunc_resolvers = true; |
2d7ad24e | 14672 | bfd_elf64_swap_reloca_out (info->output_bfd, &rela, loc); |
49c09209 | 14673 | } |
49c09209 AM |
14674 | } |
14675 | ||
a345bc8d | 14676 | if (!h->pointer_equality_needed) |
0a1b45a2 | 14677 | return true; |
a345bc8d AM |
14678 | |
14679 | if (h->def_regular) | |
0a1b45a2 | 14680 | return true; |
a345bc8d | 14681 | |
9e390558 | 14682 | s = htab->global_entry; |
49c09209 | 14683 | if (s == NULL || s->size == 0) |
0a1b45a2 | 14684 | return true; |
49c09209 AM |
14685 | |
14686 | for (ent = h->plt.plist; ent != NULL; ent = ent->next) | |
14687 | if (ent->plt.offset != (bfd_vma) -1 | |
14688 | && ent->addend == 0) | |
a345bc8d AM |
14689 | { |
14690 | bfd_byte *p; | |
14691 | asection *plt; | |
14692 | bfd_vma off; | |
14693 | ||
a345bc8d | 14694 | p = s->contents + h->root.u.def.value; |
33e44f2e | 14695 | plt = htab->elf.splt; |
30845f11 | 14696 | if (use_local_plt (info, h)) |
2d7ad24e AM |
14697 | { |
14698 | if (h->type == STT_GNU_IFUNC) | |
14699 | plt = htab->elf.iplt; | |
14700 | else | |
14701 | plt = htab->pltlocal; | |
14702 | } | |
49c09209 | 14703 | off = ent->plt.offset + plt->output_offset + plt->output_section->vma; |
a345bc8d AM |
14704 | off -= h->root.u.def.value + s->output_offset + s->output_section->vma; |
14705 | ||
14706 | if (off + 0x80008000 > 0xffffffff || (off & 3) != 0) | |
14707 | { | |
14708 | info->callbacks->einfo | |
c1c8c1ef | 14709 | (_("%P: linkage table error against `%pT'\n"), |
a345bc8d AM |
14710 | h->root.root.string); |
14711 | bfd_set_error (bfd_error_bad_value); | |
0a1b45a2 | 14712 | htab->stub_error = true; |
a345bc8d AM |
14713 | } |
14714 | ||
7341d5e2 AM |
14715 | htab->stub_count[ppc_stub_global_entry - 1] += 1; |
14716 | if (htab->params->emit_stub_syms) | |
14717 | { | |
14718 | size_t len = strlen (h->root.root.string); | |
14719 | char *name = bfd_malloc (sizeof "12345678.global_entry." + len); | |
14720 | ||
14721 | if (name == NULL) | |
0a1b45a2 | 14722 | return false; |
7341d5e2 AM |
14723 | |
14724 | sprintf (name, "%08x.global_entry.%s", s->id, h->root.root.string); | |
0a1b45a2 | 14725 | h = elf_link_hash_lookup (&htab->elf, name, true, false, false); |
7341d5e2 | 14726 | if (h == NULL) |
0a1b45a2 | 14727 | return false; |
7341d5e2 AM |
14728 | if (h->root.type == bfd_link_hash_new) |
14729 | { | |
14730 | h->root.type = bfd_link_hash_defined; | |
14731 | h->root.u.def.section = s; | |
14732 | h->root.u.def.value = p - s->contents; | |
14733 | h->ref_regular = 1; | |
14734 | h->def_regular = 1; | |
14735 | h->ref_regular_nonweak = 1; | |
14736 | h->forced_local = 1; | |
14737 | h->non_elf = 0; | |
2ec55de3 | 14738 | h->root.linker_def = 1; |
7341d5e2 AM |
14739 | } |
14740 | } | |
14741 | ||
a345bc8d AM |
14742 | if (PPC_HA (off) != 0) |
14743 | { | |
14744 | bfd_put_32 (s->owner, ADDIS_R12_R12 | PPC_HA (off), p); | |
14745 | p += 4; | |
14746 | } | |
14747 | bfd_put_32 (s->owner, LD_R12_0R12 | PPC_LO (off), p); | |
14748 | p += 4; | |
14749 | bfd_put_32 (s->owner, MTCTR_R12, p); | |
14750 | p += 4; | |
407aa07c | 14751 | bfd_put_32 (s->owner, BCTR, p); |
a345bc8d AM |
14752 | break; |
14753 | } | |
0a1b45a2 | 14754 | return true; |
a345bc8d AM |
14755 | } |
14756 | ||
49c09209 AM |
14757 | /* Write PLT relocs for locals. */ |
14758 | ||
0a1b45a2 | 14759 | static bool |
49c09209 AM |
14760 | write_plt_relocs_for_local_syms (struct bfd_link_info *info) |
14761 | { | |
14762 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
14763 | bfd *ibfd; | |
14764 | ||
14765 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next) | |
14766 | { | |
14767 | struct got_entry **lgot_ents, **end_lgot_ents; | |
14768 | struct plt_entry **local_plt, **lplt, **end_local_plt; | |
14769 | Elf_Internal_Shdr *symtab_hdr; | |
14770 | bfd_size_type locsymcount; | |
14771 | Elf_Internal_Sym *local_syms = NULL; | |
14772 | struct plt_entry *ent; | |
14773 | ||
14774 | if (!is_ppc64_elf (ibfd)) | |
14775 | continue; | |
14776 | ||
14777 | lgot_ents = elf_local_got_ents (ibfd); | |
14778 | if (!lgot_ents) | |
14779 | continue; | |
14780 | ||
14781 | symtab_hdr = &elf_symtab_hdr (ibfd); | |
14782 | locsymcount = symtab_hdr->sh_info; | |
14783 | end_lgot_ents = lgot_ents + locsymcount; | |
14784 | local_plt = (struct plt_entry **) end_lgot_ents; | |
14785 | end_local_plt = local_plt + locsymcount; | |
14786 | for (lplt = local_plt; lplt < end_local_plt; ++lplt) | |
14787 | for (ent = *lplt; ent != NULL; ent = ent->next) | |
14788 | if (ent->plt.offset != (bfd_vma) -1) | |
14789 | { | |
14790 | Elf_Internal_Sym *sym; | |
14791 | asection *sym_sec; | |
14792 | asection *plt, *relplt; | |
14793 | bfd_byte *loc; | |
14794 | bfd_vma val; | |
49c09209 AM |
14795 | |
14796 | if (!get_sym_h (NULL, &sym, &sym_sec, NULL, &local_syms, | |
14797 | lplt - local_plt, ibfd)) | |
14798 | { | |
c9594989 | 14799 | if (symtab_hdr->contents != (unsigned char *) local_syms) |
49c09209 | 14800 | free (local_syms); |
0a1b45a2 | 14801 | return false; |
49c09209 AM |
14802 | } |
14803 | ||
14804 | val = sym->st_value + ent->addend; | |
49c09209 AM |
14805 | if (sym_sec != NULL && sym_sec->output_section != NULL) |
14806 | val += sym_sec->output_offset + sym_sec->output_section->vma; | |
14807 | ||
2d7ad24e AM |
14808 | if (ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC) |
14809 | { | |
0a1b45a2 | 14810 | htab->elf.ifunc_resolvers = true; |
2d7ad24e AM |
14811 | plt = htab->elf.iplt; |
14812 | relplt = htab->elf.irelplt; | |
14813 | } | |
14814 | else | |
14815 | { | |
14816 | plt = htab->pltlocal; | |
1657026c AM |
14817 | relplt = NULL; |
14818 | if (bfd_link_pic (info) | |
14819 | && !(info->enable_dt_relr && !htab->opd_abi)) | |
14820 | relplt = htab->relpltlocal; | |
2d7ad24e | 14821 | } |
49c09209 | 14822 | |
2d7ad24e AM |
14823 | if (relplt == NULL) |
14824 | { | |
14825 | loc = plt->contents + ent->plt.offset; | |
14826 | bfd_put_64 (info->output_bfd, val, loc); | |
14827 | if (htab->opd_abi) | |
14828 | { | |
14829 | bfd_vma toc = elf_gp (ibfd); | |
14830 | bfd_put_64 (info->output_bfd, toc, loc + 8); | |
14831 | } | |
14832 | } | |
49c09209 | 14833 | else |
2d7ad24e AM |
14834 | { |
14835 | Elf_Internal_Rela rela; | |
14836 | rela.r_offset = (ent->plt.offset | |
14837 | + plt->output_offset | |
14838 | + plt->output_section->vma); | |
14839 | if (ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC) | |
14840 | { | |
14841 | if (htab->opd_abi) | |
14842 | rela.r_info = ELF64_R_INFO (0, R_PPC64_JMP_IREL); | |
14843 | else | |
14844 | rela.r_info = ELF64_R_INFO (0, R_PPC64_IRELATIVE); | |
14845 | } | |
14846 | else | |
14847 | { | |
14848 | if (htab->opd_abi) | |
14849 | rela.r_info = ELF64_R_INFO (0, R_PPC64_JMP_SLOT); | |
14850 | else | |
14851 | rela.r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE); | |
14852 | } | |
14853 | rela.r_addend = val; | |
14854 | loc = relplt->contents + (relplt->reloc_count++ | |
14855 | * sizeof (Elf64_External_Rela)); | |
14856 | bfd_elf64_swap_reloca_out (info->output_bfd, &rela, loc); | |
14857 | } | |
49c09209 AM |
14858 | } |
14859 | ||
14860 | if (local_syms != NULL | |
14861 | && symtab_hdr->contents != (unsigned char *) local_syms) | |
14862 | { | |
14863 | if (!info->keep_memory) | |
14864 | free (local_syms); | |
14865 | else | |
14866 | symtab_hdr->contents = (unsigned char *) local_syms; | |
14867 | } | |
14868 | } | |
0a1b45a2 | 14869 | return true; |
49c09209 AM |
14870 | } |
14871 | ||
a804e476 AM |
14872 | /* Emit the static wrapper function preserving registers around a |
14873 | __tls_get_addr_opt call. */ | |
14874 | ||
0a1b45a2 | 14875 | static bool |
a804e476 AM |
14876 | emit_tga_desc (struct ppc_link_hash_table *htab) |
14877 | { | |
14878 | asection *stub_sec = htab->tga_group->stub_sec; | |
14879 | unsigned int cfa_updt = 11 * 4; | |
14880 | bfd_byte *p; | |
14881 | bfd_vma to, from, delta; | |
14882 | ||
14883 | BFD_ASSERT (htab->tga_desc_fd->elf.root.type == bfd_link_hash_defined | |
14884 | && htab->tga_desc_fd->elf.root.u.def.section == stub_sec | |
14885 | && htab->tga_desc_fd->elf.root.u.def.value == 0); | |
14886 | to = defined_sym_val (&htab->tls_get_addr_fd->elf); | |
14887 | from = defined_sym_val (&htab->tga_desc_fd->elf) + cfa_updt; | |
14888 | delta = to - from; | |
14889 | if (delta + (1 << 25) >= 1 << 26) | |
14890 | { | |
14891 | _bfd_error_handler (_("__tls_get_addr call offset overflow")); | |
0a1b45a2 AM |
14892 | htab->stub_error = true; |
14893 | return false; | |
a804e476 AM |
14894 | } |
14895 | ||
14896 | p = stub_sec->contents; | |
14897 | p = tls_get_addr_prologue (htab->elf.dynobj, p, htab); | |
14898 | bfd_put_32 (stub_sec->owner, B_DOT | 1 | (delta & 0x3fffffc), p); | |
14899 | p += 4; | |
14900 | p = tls_get_addr_epilogue (htab->elf.dynobj, p, htab); | |
14901 | return stub_sec->size == (bfd_size_type) (p - stub_sec->contents); | |
14902 | } | |
14903 | ||
14904 | /* Emit eh_frame describing the static wrapper function. */ | |
14905 | ||
14906 | static bfd_byte * | |
14907 | emit_tga_desc_eh_frame (struct ppc_link_hash_table *htab, bfd_byte *p) | |
14908 | { | |
14909 | unsigned int cfa_updt = 11 * 4; | |
14910 | unsigned int i; | |
14911 | ||
14912 | *p++ = DW_CFA_advance_loc + cfa_updt / 4; | |
14913 | *p++ = DW_CFA_def_cfa_offset; | |
14914 | if (htab->opd_abi) | |
14915 | { | |
14916 | *p++ = 128; | |
14917 | *p++ = 1; | |
14918 | } | |
14919 | else | |
14920 | *p++ = 96; | |
14921 | *p++ = DW_CFA_offset_extended_sf; | |
14922 | *p++ = 65; | |
14923 | *p++ = (-16 / 8) & 0x7f; | |
14924 | for (i = 4; i < 12; i++) | |
14925 | { | |
14926 | *p++ = DW_CFA_offset + i; | |
14927 | *p++ = (htab->opd_abi ? 13 : 12) - i; | |
14928 | } | |
14929 | *p++ = DW_CFA_advance_loc + 10; | |
14930 | *p++ = DW_CFA_def_cfa_offset; | |
14931 | *p++ = 0; | |
14932 | for (i = 4; i < 12; i++) | |
14933 | *p++ = DW_CFA_restore + i; | |
14934 | *p++ = DW_CFA_advance_loc + 2; | |
14935 | *p++ = DW_CFA_restore_extended; | |
14936 | *p++ = 65; | |
14937 | return p; | |
14938 | } | |
14939 | ||
721956f4 AM |
14940 | /* Build all the stubs associated with the current output file. |
14941 | The stubs are kept in a hash table attached to the main linker | |
14942 | hash table. This function is called via gldelf64ppc_finish. */ | |
14943 | ||
0a1b45a2 | 14944 | bool |
e7d1c40c | 14945 | ppc64_elf_build_stubs (struct bfd_link_info *info, |
4ce794b7 | 14946 | char **stats) |
5d1634d7 AM |
14947 | { |
14948 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
a4b6fadd | 14949 | struct map_stub *group; |
721956f4 | 14950 | asection *stub_sec; |
5d1634d7 | 14951 | bfd_byte *p; |
e717da7e | 14952 | int stub_sec_count = 0; |
5d1634d7 | 14953 | |
4dfe6ac6 | 14954 | if (htab == NULL) |
0a1b45a2 | 14955 | return false; |
4dfe6ac6 | 14956 | |
eea6121a | 14957 | /* Allocate memory to hold the linker stubs. */ |
d4aaa2a0 | 14958 | for (group = htab->group; group != NULL; group = group->next) |
df136d64 AM |
14959 | { |
14960 | group->eh_size = 0; | |
14961 | group->lr_restore = 0; | |
14962 | if ((stub_sec = group->stub_sec) != NULL | |
14963 | && stub_sec->size != 0) | |
14964 | { | |
14965 | stub_sec->contents = bfd_zalloc (htab->params->stub_bfd, | |
14966 | stub_sec->size); | |
14967 | if (stub_sec->contents == NULL) | |
0a1b45a2 | 14968 | return false; |
df136d64 AM |
14969 | stub_sec->size = 0; |
14970 | } | |
14971 | } | |
5d1634d7 | 14972 | |
23eb7e01 | 14973 | if (htab->glink != NULL && htab->glink->size != 0) |
5d1634d7 | 14974 | { |
9f951329 | 14975 | unsigned int indx; |
ad8e1ba5 | 14976 | bfd_vma plt0; |
9f951329 | 14977 | |
721956f4 | 14978 | /* Build the .glink plt call stub. */ |
e7d1c40c | 14979 | if (htab->params->emit_stub_syms) |
97b639ba AM |
14980 | { |
14981 | struct elf_link_hash_entry *h; | |
468392fb | 14982 | h = elf_link_hash_lookup (&htab->elf, "__glink_PLTresolve", |
0a1b45a2 | 14983 | true, false, false); |
97b639ba | 14984 | if (h == NULL) |
0a1b45a2 | 14985 | return false; |
97b639ba AM |
14986 | if (h->root.type == bfd_link_hash_new) |
14987 | { | |
14988 | h->root.type = bfd_link_hash_defined; | |
14989 | h->root.u.def.section = htab->glink; | |
ee4bf8d2 | 14990 | h->root.u.def.value = 8; |
f5385ebf AM |
14991 | h->ref_regular = 1; |
14992 | h->def_regular = 1; | |
14993 | h->ref_regular_nonweak = 1; | |
14994 | h->forced_local = 1; | |
14995 | h->non_elf = 0; | |
2ec55de3 | 14996 | h->root.linker_def = 1; |
97b639ba AM |
14997 | } |
14998 | } | |
33e44f2e AM |
14999 | plt0 = (htab->elf.splt->output_section->vma |
15000 | + htab->elf.splt->output_offset | |
15001 | - 16); | |
176a0d42 AM |
15002 | if (info->emitrelocations) |
15003 | { | |
15004 | Elf_Internal_Rela *r = get_relocs (htab->glink, 1); | |
15005 | if (r == NULL) | |
0a1b45a2 | 15006 | return false; |
176a0d42 AM |
15007 | r->r_offset = (htab->glink->output_offset |
15008 | + htab->glink->output_section->vma); | |
15009 | r->r_info = ELF64_R_INFO (0, R_PPC64_REL64); | |
15010 | r->r_addend = plt0; | |
15011 | } | |
4ce794b7 | 15012 | p = htab->glink->contents; |
176a0d42 | 15013 | plt0 -= htab->glink->output_section->vma + htab->glink->output_offset; |
ee4bf8d2 AM |
15014 | bfd_put_64 (htab->glink->owner, plt0, p); |
15015 | p += 8; | |
b9e5796b AM |
15016 | if (htab->opd_abi) |
15017 | { | |
15018 | bfd_put_32 (htab->glink->owner, MFLR_R12, p); | |
15019 | p += 4; | |
15020 | bfd_put_32 (htab->glink->owner, BCL_20_31, p); | |
15021 | p += 4; | |
15022 | bfd_put_32 (htab->glink->owner, MFLR_R11, p); | |
15023 | p += 4; | |
15024 | bfd_put_32 (htab->glink->owner, LD_R2_0R11 | (-16 & 0xfffc), p); | |
15025 | p += 4; | |
15026 | bfd_put_32 (htab->glink->owner, MTLR_R12, p); | |
15027 | p += 4; | |
15028 | bfd_put_32 (htab->glink->owner, ADD_R11_R2_R11, p); | |
15029 | p += 4; | |
15030 | bfd_put_32 (htab->glink->owner, LD_R12_0R11, p); | |
15031 | p += 4; | |
15032 | bfd_put_32 (htab->glink->owner, LD_R2_0R11 | 8, p); | |
15033 | p += 4; | |
15034 | bfd_put_32 (htab->glink->owner, MTCTR_R12, p); | |
15035 | p += 4; | |
15036 | bfd_put_32 (htab->glink->owner, LD_R11_0R11 | 16, p); | |
15037 | p += 4; | |
15038 | } | |
15039 | else | |
15040 | { | |
3cd7c7d7 AM |
15041 | unsigned int insn; |
15042 | ||
15043 | /* 0: | |
15044 | . .quad plt0-1f # plt0 entry relative to 1: | |
15045 | # | |
15046 | # We get here with r12 initially @ a glink branch | |
15047 | # Load the address of _dl_runtime_resolve from plt0 and | |
15048 | # jump to it, with r0 set to the index of the PLT entry | |
15049 | # to be resolved and r11 the link map. | |
15050 | __glink_PLTresolve: | |
15051 | . std %r2,24(%r1) # optional | |
15052 | . mflr %r0 | |
15053 | . bcl 20,31,1f | |
15054 | 1: | |
15055 | . mflr %r11 | |
15056 | . mtlr %r0 | |
15057 | . ld %r0,(0b-1b)(%r11) | |
15058 | . sub %r12,%r12,%r11 | |
15059 | . add %r11,%r0,%r11 | |
15060 | . addi %r0,%r12,1b-2f | |
15061 | . ld %r12,0(%r11) | |
15062 | . srdi %r0,%r0,2 | |
15063 | . mtctr %r12 | |
15064 | . ld %r11,8(%r11) | |
15065 | . bctr | |
15066 | 2: | |
15067 | . b __glink_PLTresolve | |
15068 | . ... | |
15069 | . b __glink_PLTresolve */ | |
15070 | ||
15071 | if (htab->has_plt_localentry0) | |
15072 | { | |
15073 | bfd_put_32 (htab->glink->owner, STD_R2_0R1 + 24, p); | |
15074 | p += 4; | |
15075 | } | |
b9e5796b AM |
15076 | bfd_put_32 (htab->glink->owner, MFLR_R0, p); |
15077 | p += 4; | |
15078 | bfd_put_32 (htab->glink->owner, BCL_20_31, p); | |
15079 | p += 4; | |
15080 | bfd_put_32 (htab->glink->owner, MFLR_R11, p); | |
15081 | p += 4; | |
b9e5796b AM |
15082 | bfd_put_32 (htab->glink->owner, MTLR_R0, p); |
15083 | p += 4; | |
3cd7c7d7 AM |
15084 | if (htab->has_plt_localentry0) |
15085 | insn = LD_R0_0R11 | (-20 & 0xfffc); | |
15086 | else | |
15087 | insn = LD_R0_0R11 | (-16 & 0xfffc); | |
15088 | bfd_put_32 (htab->glink->owner, insn, p); | |
15089 | p += 4; | |
b9e5796b AM |
15090 | bfd_put_32 (htab->glink->owner, SUB_R12_R12_R11, p); |
15091 | p += 4; | |
3cd7c7d7 | 15092 | bfd_put_32 (htab->glink->owner, ADD_R11_R0_R11, p); |
b9e5796b | 15093 | p += 4; |
3cd7c7d7 | 15094 | bfd_put_32 (htab->glink->owner, ADDI_R0_R12 | (-44 & 0xffff), p); |
b9e5796b AM |
15095 | p += 4; |
15096 | bfd_put_32 (htab->glink->owner, LD_R12_0R11, p); | |
15097 | p += 4; | |
15098 | bfd_put_32 (htab->glink->owner, SRDI_R0_R0_2, p); | |
15099 | p += 4; | |
15100 | bfd_put_32 (htab->glink->owner, MTCTR_R12, p); | |
15101 | p += 4; | |
15102 | bfd_put_32 (htab->glink->owner, LD_R11_0R11 | 8, p); | |
15103 | p += 4; | |
15104 | } | |
407aa07c AM |
15105 | bfd_put_32 (htab->glink->owner, BCTR, p); |
15106 | p += 4; | |
c75bc4f7 | 15107 | BFD_ASSERT (p == htab->glink->contents + GLINK_PLTRESOLVE_SIZE (htab)); |
ad8e1ba5 | 15108 | |
9f951329 AM |
15109 | /* Build the .glink lazy link call stubs. */ |
15110 | indx = 0; | |
9e390558 | 15111 | while (p < htab->glink->contents + htab->glink->size) |
9f951329 | 15112 | { |
b9e5796b | 15113 | if (htab->opd_abi) |
9f951329 | 15114 | { |
b9e5796b AM |
15115 | if (indx < 0x8000) |
15116 | { | |
15117 | bfd_put_32 (htab->glink->owner, LI_R0_0 | indx, p); | |
15118 | p += 4; | |
15119 | } | |
15120 | else | |
15121 | { | |
15122 | bfd_put_32 (htab->glink->owner, LIS_R0_0 | PPC_HI (indx), p); | |
15123 | p += 4; | |
15124 | bfd_put_32 (htab->glink->owner, ORI_R0_R0_0 | PPC_LO (indx), | |
15125 | p); | |
15126 | p += 4; | |
15127 | } | |
9f951329 | 15128 | } |
4ce794b7 | 15129 | bfd_put_32 (htab->glink->owner, |
ee4bf8d2 | 15130 | B_DOT | ((htab->glink->contents - p + 8) & 0x3fffffc), p); |
a16d5acb | 15131 | indx++; |
9f951329 AM |
15132 | p += 4; |
15133 | } | |
5d1634d7 | 15134 | } |
5d1634d7 | 15135 | |
a804e476 AM |
15136 | if (htab->tga_group != NULL) |
15137 | { | |
15138 | htab->tga_group->lr_restore = 23 * 4; | |
15139 | htab->tga_group->stub_sec->size = 24 * 4; | |
15140 | if (!emit_tga_desc (htab)) | |
0a1b45a2 | 15141 | return false; |
a804e476 AM |
15142 | if (htab->glink_eh_frame != NULL |
15143 | && htab->glink_eh_frame->size != 0) | |
15144 | { | |
15145 | size_t align = 4; | |
15146 | ||
15147 | p = htab->glink_eh_frame->contents; | |
15148 | p += (sizeof (glink_eh_frame_cie) + align - 1) & -align; | |
15149 | p += 17; | |
15150 | htab->tga_group->eh_size = emit_tga_desc_eh_frame (htab, p) - p; | |
15151 | } | |
15152 | } | |
15153 | ||
49c09209 AM |
15154 | /* Build .glink global entry stubs, and PLT relocs for globals. */ |
15155 | elf_link_hash_traverse (&htab->elf, build_global_entry_stubs_and_plt, info); | |
15156 | ||
15157 | if (!write_plt_relocs_for_local_syms (info)) | |
0a1b45a2 | 15158 | return false; |
9e390558 | 15159 | |
7341d5e2 | 15160 | if (htab->brlt != NULL && htab->brlt->size != 0) |
721956f4 | 15161 | { |
4ce794b7 | 15162 | htab->brlt->contents = bfd_zalloc (htab->brlt->owner, |
eea6121a | 15163 | htab->brlt->size); |
4ce794b7 | 15164 | if (htab->brlt->contents == NULL) |
0a1b45a2 | 15165 | return false; |
721956f4 | 15166 | } |
ee75fd95 | 15167 | if (htab->relbrlt != NULL && htab->relbrlt->size != 0) |
63bc6f6c AM |
15168 | { |
15169 | htab->relbrlt->contents = bfd_zalloc (htab->relbrlt->owner, | |
eea6121a | 15170 | htab->relbrlt->size); |
63bc6f6c | 15171 | if (htab->relbrlt->contents == NULL) |
0a1b45a2 | 15172 | return false; |
63bc6f6c | 15173 | } |
5d1634d7 | 15174 | |
721956f4 | 15175 | /* Build the stubs as directed by the stub hash table. */ |
ecc741e6 | 15176 | htab->stub_id = 0; |
721956f4 | 15177 | bfd_hash_traverse (&htab->stub_hash_table, ppc_build_one_stub, info); |
5d1634d7 | 15178 | |
a4b6fadd AM |
15179 | for (group = htab->group; group != NULL; group = group->next) |
15180 | if (group->needs_save_res) | |
7dda8d3c | 15181 | group->stub_sec->size += htab->sfpr->size; |
a4b6fadd | 15182 | |
aa8a7074 AM |
15183 | if (htab->relbrlt != NULL) |
15184 | htab->relbrlt->reloc_count = 0; | |
15185 | ||
e7d1c40c | 15186 | if (htab->params->plt_stub_align != 0) |
d4aaa2a0 AM |
15187 | for (group = htab->group; group != NULL; group = group->next) |
15188 | if ((stub_sec = group->stub_sec) != NULL) | |
691d2e9a AM |
15189 | { |
15190 | int align = abs (htab->params->plt_stub_align); | |
15191 | stub_sec->size = (stub_sec->size + (1 << align) - 1) & -(1 << align); | |
15192 | } | |
794e51c0 | 15193 | |
7dda8d3c AM |
15194 | for (group = htab->group; group != NULL; group = group->next) |
15195 | if (group->needs_save_res) | |
15196 | { | |
15197 | stub_sec = group->stub_sec; | |
15198 | memcpy (stub_sec->contents + stub_sec->size - htab->sfpr->size, | |
15199 | htab->sfpr->contents, htab->sfpr->size); | |
15200 | if (htab->params->emit_stub_syms) | |
15201 | { | |
15202 | unsigned int i; | |
15203 | ||
15204 | for (i = 0; i < ARRAY_SIZE (save_res_funcs); i++) | |
15205 | if (!sfpr_define (info, &save_res_funcs[i], stub_sec)) | |
0a1b45a2 | 15206 | return false; |
7dda8d3c AM |
15207 | } |
15208 | } | |
15209 | ||
df136d64 AM |
15210 | if (htab->glink_eh_frame != NULL |
15211 | && htab->glink_eh_frame->size != 0) | |
15212 | { | |
15213 | bfd_vma val; | |
15214 | size_t align = 4; | |
15215 | ||
15216 | p = htab->glink_eh_frame->contents; | |
15217 | p += (sizeof (glink_eh_frame_cie) + align - 1) & -align; | |
15218 | ||
15219 | for (group = htab->group; group != NULL; group = group->next) | |
15220 | if (group->eh_size != 0) | |
15221 | { | |
15222 | /* Offset to stub section. */ | |
15223 | val = (group->stub_sec->output_section->vma | |
15224 | + group->stub_sec->output_offset); | |
15225 | val -= (htab->glink_eh_frame->output_section->vma | |
15226 | + htab->glink_eh_frame->output_offset | |
15227 | + (p + 8 - htab->glink_eh_frame->contents)); | |
15228 | if (val + 0x80000000 > 0xffffffff) | |
15229 | { | |
15230 | _bfd_error_handler | |
15231 | (_("%s offset too large for .eh_frame sdata4 encoding"), | |
15232 | group->stub_sec->name); | |
0a1b45a2 | 15233 | return false; |
df136d64 AM |
15234 | } |
15235 | bfd_put_32 (htab->elf.dynobj, val, p + 8); | |
15236 | p += (group->eh_size + 17 + 3) & -4; | |
15237 | } | |
15238 | if (htab->glink != NULL && htab->glink->size != 0) | |
15239 | { | |
15240 | /* Offset to .glink. */ | |
15241 | val = (htab->glink->output_section->vma | |
15242 | + htab->glink->output_offset | |
15243 | + 8); | |
15244 | val -= (htab->glink_eh_frame->output_section->vma | |
15245 | + htab->glink_eh_frame->output_offset | |
15246 | + (p + 8 - htab->glink_eh_frame->contents)); | |
15247 | if (val + 0x80000000 > 0xffffffff) | |
15248 | { | |
15249 | _bfd_error_handler | |
15250 | (_("%s offset too large for .eh_frame sdata4 encoding"), | |
15251 | htab->glink->name); | |
0a1b45a2 | 15252 | return false; |
df136d64 AM |
15253 | } |
15254 | bfd_put_32 (htab->elf.dynobj, val, p + 8); | |
15255 | p += (24 + align - 1) & -align; | |
15256 | } | |
15257 | } | |
15258 | ||
1657026c AM |
15259 | if (htab->elf.srelrdyn != NULL && htab->elf.srelrdyn->size != 0) |
15260 | { | |
15261 | htab->elf.srelrdyn->contents | |
15262 | = bfd_alloc (htab->elf.dynobj, htab->elf.srelrdyn->size); | |
15263 | if (htab->elf.srelrdyn->contents == NULL) | |
15264 | return false; | |
15265 | ||
0aac2413 AM |
15266 | bfd_vma *relr_addr = sort_relr (htab); |
15267 | if (htab->relr_count != 0 && relr_addr == NULL) | |
15268 | return false; | |
15269 | ||
1657026c AM |
15270 | size_t i = 0; |
15271 | bfd_byte *loc = htab->elf.srelrdyn->contents; | |
15272 | while (i < htab->relr_count) | |
15273 | { | |
0aac2413 | 15274 | bfd_vma base = relr_addr[i]; |
1657026c AM |
15275 | BFD_ASSERT (base % 2 == 0); |
15276 | bfd_put_64 (htab->elf.dynobj, base, loc); | |
15277 | loc += 8; | |
15278 | i++; | |
15279 | while (i < htab->relr_count | |
0aac2413 | 15280 | && relr_addr[i] == base) |
1657026c AM |
15281 | { |
15282 | htab->stub_error = true; | |
15283 | i++; | |
15284 | } | |
15285 | base += 8; | |
15286 | while (1) | |
15287 | { | |
15288 | bfd_vma bits = 0; | |
15289 | while (i < htab->relr_count | |
0aac2413 AM |
15290 | && relr_addr[i] - base < 63 * 8 |
15291 | && (relr_addr[i] - base) % 8 == 0) | |
1657026c | 15292 | { |
0aac2413 | 15293 | bits |= (bfd_vma) 1 << ((relr_addr[i] - base) / 8); |
1657026c AM |
15294 | i++; |
15295 | } | |
15296 | if (bits == 0) | |
15297 | break; | |
15298 | bfd_put_64 (htab->elf.dynobj, (bits << 1) | 1, loc); | |
15299 | loc += 8; | |
15300 | base += 63 * 8; | |
15301 | } | |
15302 | } | |
0aac2413 | 15303 | free (relr_addr); |
1657026c AM |
15304 | /* Pad any excess with 1's, a do-nothing encoding. */ |
15305 | while ((size_t) (loc - htab->elf.srelrdyn->contents) | |
15306 | < htab->elf.srelrdyn->size) | |
15307 | { | |
15308 | bfd_put_64 (htab->elf.dynobj, 1, loc); | |
15309 | loc += 8; | |
15310 | } | |
15311 | } | |
15312 | ||
d4aaa2a0 AM |
15313 | for (group = htab->group; group != NULL; group = group->next) |
15314 | if ((stub_sec = group->stub_sec) != NULL) | |
e717da7e AM |
15315 | { |
15316 | stub_sec_count += 1; | |
c9301e31 AM |
15317 | if (stub_sec->rawsize != stub_sec->size |
15318 | && (htab->stub_iteration <= STUB_SHRINK_ITER | |
15319 | || stub_sec->rawsize < stub_sec->size)) | |
e717da7e AM |
15320 | break; |
15321 | } | |
5d1634d7 | 15322 | |
25516cc5 | 15323 | if (group != NULL) |
1657026c AM |
15324 | htab->stub_error = true; |
15325 | ||
15326 | if (htab->stub_error) | |
5d1634d7 | 15327 | { |
cf97bcb0 | 15328 | _bfd_error_handler (_("stubs don't match calculated size")); |
1657026c | 15329 | return false; |
5d1634d7 | 15330 | } |
721956f4 | 15331 | |
d2a300cf AM |
15332 | if (stats != NULL) |
15333 | { | |
988b7300 AM |
15334 | char *groupmsg; |
15335 | if (asprintf (&groupmsg, | |
17a6f5f2 AM |
15336 | ngettext ("linker stubs in %u group", |
15337 | "linker stubs in %u groups", | |
988b7300 AM |
15338 | stub_sec_count), |
15339 | stub_sec_count) < 0) | |
15340 | *stats = NULL; | |
15341 | else | |
15342 | { | |
17a6f5f2 | 15343 | if (asprintf (stats, _("%s, iter %u\n" |
988b7300 | 15344 | " branch %lu\n" |
988b7300 | 15345 | " long branch %lu\n" |
988b7300 | 15346 | " plt call %lu\n" |
988b7300 | 15347 | " global entry %lu"), |
17a6f5f2 | 15348 | groupmsg, htab->stub_iteration, |
988b7300 | 15349 | htab->stub_count[ppc_stub_long_branch - 1], |
988b7300 | 15350 | htab->stub_count[ppc_stub_plt_branch - 1], |
988b7300 | 15351 | htab->stub_count[ppc_stub_plt_call - 1], |
988b7300 AM |
15352 | htab->stub_count[ppc_stub_global_entry - 1]) < 0) |
15353 | *stats = NULL; | |
15354 | free (groupmsg); | |
15355 | } | |
d2a300cf | 15356 | } |
0a1b45a2 | 15357 | return true; |
5bd4f169 AM |
15358 | } |
15359 | ||
60124e18 AM |
15360 | /* What to do when ld finds relocations against symbols defined in |
15361 | discarded sections. */ | |
15362 | ||
15363 | static unsigned int | |
15364 | ppc64_elf_action_discarded (asection *sec) | |
15365 | { | |
15366 | if (strcmp (".opd", sec->name) == 0) | |
15367 | return 0; | |
15368 | ||
15369 | if (strcmp (".toc", sec->name) == 0) | |
15370 | return 0; | |
15371 | ||
bce50a28 JJ |
15372 | if (strcmp (".toc1", sec->name) == 0) |
15373 | return 0; | |
15374 | ||
60124e18 AM |
15375 | return _bfd_elf_default_action_discarded (sec); |
15376 | } | |
15377 | ||
e59a1001 AM |
15378 | /* These are the dynamic relocations supported by glibc. */ |
15379 | ||
0a1b45a2 | 15380 | static bool |
e59a1001 AM |
15381 | ppc64_glibc_dynamic_reloc (enum elf_ppc64_reloc_type r_type) |
15382 | { | |
15383 | switch (r_type) | |
15384 | { | |
15385 | case R_PPC64_RELATIVE: | |
15386 | case R_PPC64_NONE: | |
15387 | case R_PPC64_ADDR64: | |
15388 | case R_PPC64_GLOB_DAT: | |
15389 | case R_PPC64_IRELATIVE: | |
15390 | case R_PPC64_JMP_IREL: | |
15391 | case R_PPC64_JMP_SLOT: | |
15392 | case R_PPC64_DTPMOD64: | |
15393 | case R_PPC64_DTPREL64: | |
15394 | case R_PPC64_TPREL64: | |
15395 | case R_PPC64_TPREL16_LO_DS: | |
15396 | case R_PPC64_TPREL16_DS: | |
15397 | case R_PPC64_TPREL16: | |
15398 | case R_PPC64_TPREL16_LO: | |
15399 | case R_PPC64_TPREL16_HI: | |
15400 | case R_PPC64_TPREL16_HIGH: | |
15401 | case R_PPC64_TPREL16_HA: | |
15402 | case R_PPC64_TPREL16_HIGHA: | |
15403 | case R_PPC64_TPREL16_HIGHER: | |
15404 | case R_PPC64_TPREL16_HIGHEST: | |
15405 | case R_PPC64_TPREL16_HIGHERA: | |
15406 | case R_PPC64_TPREL16_HIGHESTA: | |
15407 | case R_PPC64_ADDR16_LO_DS: | |
15408 | case R_PPC64_ADDR16_LO: | |
15409 | case R_PPC64_ADDR16_HI: | |
15410 | case R_PPC64_ADDR16_HIGH: | |
15411 | case R_PPC64_ADDR16_HA: | |
15412 | case R_PPC64_ADDR16_HIGHA: | |
15413 | case R_PPC64_REL30: | |
15414 | case R_PPC64_COPY: | |
15415 | case R_PPC64_UADDR64: | |
15416 | case R_PPC64_UADDR32: | |
15417 | case R_PPC64_ADDR32: | |
15418 | case R_PPC64_ADDR24: | |
15419 | case R_PPC64_ADDR16: | |
15420 | case R_PPC64_UADDR16: | |
15421 | case R_PPC64_ADDR16_DS: | |
15422 | case R_PPC64_ADDR16_HIGHER: | |
15423 | case R_PPC64_ADDR16_HIGHEST: | |
15424 | case R_PPC64_ADDR16_HIGHERA: | |
15425 | case R_PPC64_ADDR16_HIGHESTA: | |
15426 | case R_PPC64_ADDR14: | |
15427 | case R_PPC64_ADDR14_BRTAKEN: | |
15428 | case R_PPC64_ADDR14_BRNTAKEN: | |
15429 | case R_PPC64_REL32: | |
15430 | case R_PPC64_REL64: | |
0a1b45a2 | 15431 | return true; |
e59a1001 AM |
15432 | |
15433 | default: | |
0a1b45a2 | 15434 | return false; |
e59a1001 AM |
15435 | } |
15436 | } | |
15437 | ||
5bd4f169 AM |
15438 | /* The RELOCATE_SECTION function is called by the ELF backend linker |
15439 | to handle the relocations for a section. | |
15440 | ||
15441 | The relocs are always passed as Rela structures; if the section | |
15442 | actually uses Rel structures, the r_addend field will always be | |
15443 | zero. | |
15444 | ||
15445 | This function is responsible for adjust the section contents as | |
15446 | necessary, and (if using Rela relocs and generating a | |
1049f94e | 15447 | relocatable output file) adjusting the reloc addend as |
5bd4f169 AM |
15448 | necessary. |
15449 | ||
15450 | This function does not have to worry about setting the reloc | |
15451 | address or the reloc symbol index. | |
15452 | ||
15453 | LOCAL_SYMS is a pointer to the swapped in local symbols. | |
15454 | ||
15455 | LOCAL_SECTIONS is an array giving the section in the input file | |
15456 | corresponding to the st_shndx field of each local symbol. | |
15457 | ||
15458 | The global hash table entry for the global symbols can be found | |
15459 | via elf_sym_hashes (input_bfd). | |
15460 | ||
1049f94e | 15461 | When generating relocatable output, this function must handle |
5bd4f169 AM |
15462 | STB_LOCAL/STT_SECTION symbols specially. The output symbol is |
15463 | going to be the section symbol corresponding to the output | |
15464 | section, which means that the addend must be adjusted | |
15465 | accordingly. */ | |
15466 | ||
0f684201 | 15467 | static int |
4ce794b7 AM |
15468 | ppc64_elf_relocate_section (bfd *output_bfd, |
15469 | struct bfd_link_info *info, | |
15470 | bfd *input_bfd, | |
15471 | asection *input_section, | |
15472 | bfd_byte *contents, | |
15473 | Elf_Internal_Rela *relocs, | |
15474 | Elf_Internal_Sym *local_syms, | |
15475 | asection **local_sections) | |
5bd4f169 | 15476 | { |
65f38f15 | 15477 | struct ppc_link_hash_table *htab; |
5bd4f169 AM |
15478 | Elf_Internal_Shdr *symtab_hdr; |
15479 | struct elf_link_hash_entry **sym_hashes; | |
5bd4f169 | 15480 | Elf_Internal_Rela *rel; |
c316a17c | 15481 | Elf_Internal_Rela *wrel; |
5bd4f169 | 15482 | Elf_Internal_Rela *relend; |
411e1bfb AM |
15483 | Elf_Internal_Rela outrel; |
15484 | bfd_byte *loc; | |
411e1bfb | 15485 | struct got_entry **local_got_ents; |
5bd4f169 | 15486 | bfd_vma TOCstart; |
0a1b45a2 AM |
15487 | bool ret = true; |
15488 | bool is_opd; | |
794e51c0 | 15489 | /* Assume 'at' branch hints. */ |
0a1b45a2 AM |
15490 | bool is_isa_v2 = true; |
15491 | bool warned_dynamic = false; | |
95f0d0d2 | 15492 | bfd_vma d_offset = (bfd_big_endian (input_bfd) ? 2 : 0); |
5bd4f169 | 15493 | |
65f38f15 | 15494 | /* Initialize howto table if needed. */ |
5bd4f169 | 15495 | if (!ppc64_elf_howto_table[R_PPC64_ADDR32]) |
5bd4f169 AM |
15496 | ppc_howto_init (); |
15497 | ||
65f38f15 | 15498 | htab = ppc_hash_table (info); |
4dfe6ac6 | 15499 | if (htab == NULL) |
0a1b45a2 | 15500 | return false; |
ee75fd95 AM |
15501 | |
15502 | /* Don't relocate stub sections. */ | |
e7d1c40c | 15503 | if (input_section->owner == htab->params->stub_bfd) |
0a1b45a2 | 15504 | return true; |
ee75fd95 | 15505 | |
7af5d5c4 AM |
15506 | if (!is_ppc64_elf (input_bfd)) |
15507 | { | |
15508 | bfd_set_error (bfd_error_wrong_format); | |
0a1b45a2 | 15509 | return false; |
7af5d5c4 | 15510 | } |
0ffa91dd | 15511 | |
411e1bfb | 15512 | local_got_ents = elf_local_got_ents (input_bfd); |
5bd4f169 | 15513 | TOCstart = elf_gp (output_bfd); |
0ffa91dd | 15514 | symtab_hdr = &elf_symtab_hdr (input_bfd); |
5bd4f169 | 15515 | sym_hashes = elf_sym_hashes (input_bfd); |
7c8fe5c4 | 15516 | is_opd = ppc64_elf_section_data (input_section)->sec_type == sec_opd; |
65f38f15 | 15517 | |
c316a17c | 15518 | rel = wrel = relocs; |
5bd4f169 | 15519 | relend = relocs + input_section->reloc_count; |
c316a17c | 15520 | for (; rel < relend; wrel++, rel++) |
5bd4f169 | 15521 | { |
04c9666a | 15522 | enum elf_ppc64_reloc_type r_type; |
31c76678 | 15523 | bfd_vma addend; |
5bd4f169 AM |
15524 | bfd_reloc_status_type r; |
15525 | Elf_Internal_Sym *sym; | |
15526 | asection *sec; | |
039b3fef AM |
15527 | struct elf_link_hash_entry *h_elf; |
15528 | struct ppc_link_hash_entry *h; | |
15529 | struct ppc_link_hash_entry *fdh; | |
5bd4f169 | 15530 | const char *sym_name; |
0d4792f7 | 15531 | unsigned long r_symndx, toc_symndx; |
3a71aa26 | 15532 | bfd_vma toc_addend; |
f961d9dd AM |
15533 | unsigned char tls_mask, tls_gd, tls_type; |
15534 | unsigned char sym_type; | |
5bd4f169 | 15535 | bfd_vma relocation; |
0a1b45a2 AM |
15536 | bool unresolved_reloc, save_unresolved_reloc; |
15537 | bool warned; | |
bc30df16 | 15538 | enum { DEST_NORMAL, DEST_OPD, DEST_STUB } reloc_dest; |
67f0cbdb | 15539 | unsigned int insn; |
e11840f9 | 15540 | unsigned int mask; |
721956f4 AM |
15541 | struct ppc_stub_hash_entry *stub_entry; |
15542 | bfd_vma max_br_offset; | |
15543 | bfd_vma from; | |
c316a17c | 15544 | Elf_Internal_Rela orig_rel; |
b80eed39 AM |
15545 | reloc_howto_type *howto; |
15546 | struct reloc_howto_struct alt_howto; | |
4a421c53 AM |
15547 | uint64_t pinsn; |
15548 | bfd_vma offset; | |
5bd4f169 | 15549 | |
c316a17c AM |
15550 | again: |
15551 | orig_rel = *rel; | |
15552 | ||
4ce794b7 | 15553 | r_type = ELF64_R_TYPE (rel->r_info); |
5bd4f169 | 15554 | r_symndx = ELF64_R_SYM (rel->r_info); |
ee87f2da AM |
15555 | |
15556 | /* For old style R_PPC64_TOC relocs with a zero symbol, use the | |
15557 | symbol of the previous ADDR64 reloc. The symbol gives us the | |
15558 | proper TOC base to use. */ | |
15559 | if (rel->r_info == ELF64_R_INFO (0, R_PPC64_TOC) | |
c316a17c AM |
15560 | && wrel != relocs |
15561 | && ELF64_R_TYPE (wrel[-1].r_info) == R_PPC64_ADDR64 | |
ee87f2da | 15562 | && is_opd) |
c316a17c | 15563 | r_symndx = ELF64_R_SYM (wrel[-1].r_info); |
ee87f2da | 15564 | |
4ce794b7 AM |
15565 | sym = NULL; |
15566 | sec = NULL; | |
039b3fef | 15567 | h_elf = NULL; |
4ce794b7 | 15568 | sym_name = NULL; |
0a1b45a2 AM |
15569 | unresolved_reloc = false; |
15570 | warned = false; | |
65f38f15 | 15571 | |
0b13192e | 15572 | if (r_symndx < symtab_hdr->sh_info) |
5bd4f169 AM |
15573 | { |
15574 | /* It's a local symbol. */ | |
74f0fb50 | 15575 | struct _opd_sec_data *opd; |
4025353c | 15576 | |
5bd4f169 AM |
15577 | sym = local_syms + r_symndx; |
15578 | sec = local_sections[r_symndx]; | |
26c61ae5 | 15579 | sym_name = bfd_elf_sym_name (input_bfd, symtab_hdr, sym, sec); |
0d4792f7 | 15580 | sym_type = ELF64_ST_TYPE (sym->st_info); |
8517fae7 | 15581 | relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel); |
74f0fb50 AM |
15582 | opd = get_opd_info (sec); |
15583 | if (opd != NULL && opd->adjust != NULL) | |
1e2f5b6e | 15584 | { |
51aecdc5 AM |
15585 | long adjust = opd->adjust[OPD_NDX (sym->st_value |
15586 | + rel->r_addend)]; | |
4025353c AM |
15587 | if (adjust == -1) |
15588 | relocation = 0; | |
15589 | else | |
4cc603a5 AM |
15590 | { |
15591 | /* If this is a relocation against the opd section sym | |
15592 | and we have edited .opd, adjust the reloc addend so | |
15593 | that ld -r and ld --emit-relocs output is correct. | |
15594 | If it is a reloc against some other .opd symbol, | |
15595 | then the symbol value will be adjusted later. */ | |
15596 | if (ELF_ST_TYPE (sym->st_info) == STT_SECTION) | |
15597 | rel->r_addend += adjust; | |
15598 | else | |
15599 | relocation += adjust; | |
15600 | } | |
1e2f5b6e | 15601 | } |
5bd4f169 AM |
15602 | } |
15603 | else | |
15604 | { | |
0a1b45a2 | 15605 | bool ignored; |
62d887d4 | 15606 | |
b2a8e766 AM |
15607 | RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel, |
15608 | r_symndx, symtab_hdr, sym_hashes, | |
039b3fef | 15609 | h_elf, sec, relocation, |
62d887d4 | 15610 | unresolved_reloc, warned, ignored); |
039b3fef AM |
15611 | sym_name = h_elf->root.root.string; |
15612 | sym_type = h_elf->type; | |
b69fdb4e AM |
15613 | if (sec != NULL |
15614 | && sec->owner == output_bfd | |
15615 | && strcmp (sec->name, ".opd") == 0) | |
15616 | { | |
15617 | /* This is a symbol defined in a linker script. All | |
15618 | such are defined in output sections, even those | |
15619 | defined by simple assignment from a symbol defined in | |
15620 | an input section. Transfer the symbol to an | |
15621 | appropriate input .opd section, so that a branch to | |
15622 | this symbol will be mapped to the location specified | |
15623 | by the opd entry. */ | |
15624 | struct bfd_link_order *lo; | |
15625 | for (lo = sec->map_head.link_order; lo != NULL; lo = lo->next) | |
15626 | if (lo->type == bfd_indirect_link_order) | |
15627 | { | |
15628 | asection *isec = lo->u.indirect.section; | |
15629 | if (h_elf->root.u.def.value >= isec->output_offset | |
15630 | && h_elf->root.u.def.value < (isec->output_offset | |
15631 | + isec->size)) | |
15632 | { | |
15633 | h_elf->root.u.def.value -= isec->output_offset; | |
15634 | h_elf->root.u.def.section = isec; | |
15635 | sec = isec; | |
15636 | break; | |
15637 | } | |
15638 | } | |
15639 | } | |
5bd4f169 | 15640 | } |
ed7007c1 | 15641 | h = ppc_elf_hash_entry (h_elf); |
5bd4f169 | 15642 | |
dbaa2011 | 15643 | if (sec != NULL && discarded_section (sec)) |
c316a17c AM |
15644 | { |
15645 | _bfd_clear_contents (ppc64_elf_howto_table[r_type], | |
15646 | input_bfd, input_section, | |
0930cb30 | 15647 | contents, rel->r_offset); |
c316a17c AM |
15648 | wrel->r_offset = rel->r_offset; |
15649 | wrel->r_info = 0; | |
15650 | wrel->r_addend = 0; | |
15651 | ||
15652 | /* For ld -r, remove relocations in debug sections against | |
dcd2b8a0 | 15653 | symbols defined in discarded sections. Not done for |
c316a17c AM |
15654 | non-debug to preserve relocs in .eh_frame which the |
15655 | eh_frame editing code expects to be present. */ | |
15656 | if (bfd_link_relocatable (info) | |
15657 | && (input_section->flags & SEC_DEBUGGING)) | |
15658 | wrel--; | |
15659 | ||
15660 | continue; | |
15661 | } | |
ab96bf03 | 15662 | |
0e1862bb | 15663 | if (bfd_link_relocatable (info)) |
c316a17c | 15664 | goto copy_reloc; |
ab96bf03 | 15665 | |
f40da81b AM |
15666 | if (h != NULL && &h->elf == htab->elf.hgot) |
15667 | { | |
6f20ed8a | 15668 | relocation = TOCstart + htab->sec_info[input_section->id].toc_off; |
f40da81b | 15669 | sec = bfd_abs_section_ptr; |
0a1b45a2 | 15670 | unresolved_reloc = false; |
f40da81b AM |
15671 | } |
15672 | ||
951fd09b AM |
15673 | /* TLS optimizations. Replace instruction sequences and relocs |
15674 | based on information we collected in tls_optimize. We edit | |
15675 | RELOCS so that --emit-relocs will output something sensible | |
15676 | for the final instruction stream. */ | |
15677 | tls_mask = 0; | |
15678 | tls_gd = 0; | |
0d4792f7 | 15679 | toc_symndx = 0; |
727fc41e AM |
15680 | if (h != NULL) |
15681 | tls_mask = h->tls_mask; | |
15682 | else if (local_got_ents != NULL) | |
411e1bfb | 15683 | { |
e054468f AM |
15684 | struct plt_entry **local_plt = (struct plt_entry **) |
15685 | (local_got_ents + symtab_hdr->sh_info); | |
f961d9dd | 15686 | unsigned char *lgot_masks = (unsigned char *) |
e054468f | 15687 | (local_plt + symtab_hdr->sh_info); |
727fc41e AM |
15688 | tls_mask = lgot_masks[r_symndx]; |
15689 | } | |
37da22e5 | 15690 | if (((tls_mask & TLS_TLS) == 0 || tls_mask == (TLS_TLS | TLS_MARK)) |
727fc41e AM |
15691 | && (r_type == R_PPC64_TLS |
15692 | || r_type == R_PPC64_TLSGD | |
15693 | || r_type == R_PPC64_TLSLD)) | |
15694 | { | |
15695 | /* Check for toc tls entries. */ | |
f961d9dd | 15696 | unsigned char *toc_tls; |
0d4792f7 | 15697 | |
727fc41e AM |
15698 | if (!get_tls_mask (&toc_tls, &toc_symndx, &toc_addend, |
15699 | &local_syms, rel, input_bfd)) | |
0a1b45a2 | 15700 | return false; |
0d4792f7 | 15701 | |
727fc41e AM |
15702 | if (toc_tls) |
15703 | tls_mask = *toc_tls; | |
0d4792f7 AM |
15704 | } |
15705 | ||
15706 | /* Check that tls relocs are used with tls syms, and non-tls | |
15707 | relocs are used with non-tls syms. */ | |
cf35638d | 15708 | if (r_symndx != STN_UNDEF |
0d4792f7 AM |
15709 | && r_type != R_PPC64_NONE |
15710 | && (h == NULL | |
039b3fef AM |
15711 | || h->elf.root.type == bfd_link_hash_defined |
15712 | || h->elf.root.type == bfd_link_hash_defweak) | |
71c4e95a | 15713 | && IS_PPC64_TLS_RELOC (r_type) != (sym_type == STT_TLS)) |
0d4792f7 | 15714 | { |
37da22e5 | 15715 | if ((tls_mask & TLS_TLS) != 0 |
727fc41e AM |
15716 | && (r_type == R_PPC64_TLS |
15717 | || r_type == R_PPC64_TLSGD | |
15718 | || r_type == R_PPC64_TLSLD)) | |
0d4792f7 AM |
15719 | /* R_PPC64_TLS is OK against a symbol in the TOC. */ |
15720 | ; | |
15721 | else | |
25f53a85 | 15722 | info->callbacks->einfo |
1d483afe | 15723 | (!IS_PPC64_TLS_RELOC (r_type) |
695344c0 | 15724 | /* xgettext:c-format */ |
c1c8c1ef | 15725 | ? _("%H: %s used with TLS symbol `%pT'\n") |
695344c0 | 15726 | /* xgettext:c-format */ |
c1c8c1ef | 15727 | : _("%H: %s used with non-TLS symbol `%pT'\n"), |
25f53a85 | 15728 | input_bfd, input_section, rel->r_offset, |
0d4792f7 AM |
15729 | ppc64_elf_howto_table[r_type]->name, |
15730 | sym_name); | |
411e1bfb AM |
15731 | } |
15732 | ||
15733 | /* Ensure reloc mapping code below stays sane. */ | |
15734 | if (R_PPC64_TOC16_LO_DS != R_PPC64_TOC16_DS + 1 | |
15735 | || R_PPC64_TOC16_LO != R_PPC64_TOC16 + 1 | |
15736 | || (R_PPC64_GOT_TLSLD16 & 3) != (R_PPC64_GOT_TLSGD16 & 3) | |
15737 | || (R_PPC64_GOT_TLSLD16_LO & 3) != (R_PPC64_GOT_TLSGD16_LO & 3) | |
15738 | || (R_PPC64_GOT_TLSLD16_HI & 3) != (R_PPC64_GOT_TLSGD16_HI & 3) | |
15739 | || (R_PPC64_GOT_TLSLD16_HA & 3) != (R_PPC64_GOT_TLSGD16_HA & 3) | |
15740 | || (R_PPC64_GOT_TLSLD16 & 3) != (R_PPC64_GOT_TPREL16_DS & 3) | |
15741 | || (R_PPC64_GOT_TLSLD16_LO & 3) != (R_PPC64_GOT_TPREL16_LO_DS & 3) | |
15742 | || (R_PPC64_GOT_TLSLD16_HI & 3) != (R_PPC64_GOT_TPREL16_HI & 3) | |
15743 | || (R_PPC64_GOT_TLSLD16_HA & 3) != (R_PPC64_GOT_TPREL16_HA & 3)) | |
15744 | abort (); | |
0d4792f7 | 15745 | |
411e1bfb AM |
15746 | switch (r_type) |
15747 | { | |
15748 | default: | |
411e1bfb AM |
15749 | break; |
15750 | ||
ba761f19 | 15751 | case R_PPC64_LO_DS_OPT: |
733ae98c AM |
15752 | if (offset_in_range (input_section, rel->r_offset - d_offset, 4)) |
15753 | { | |
15754 | insn = bfd_get_32 (input_bfd, | |
15755 | contents + rel->r_offset - d_offset); | |
15756 | if ((insn & (0x3fu << 26)) != 58u << 26) | |
15757 | abort (); | |
15758 | insn += (14u << 26) - (58u << 26); | |
15759 | bfd_put_32 (input_bfd, insn, | |
15760 | contents + rel->r_offset - d_offset); | |
15761 | r_type = R_PPC64_TOC16_LO; | |
15762 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
15763 | } | |
ba761f19 AM |
15764 | break; |
15765 | ||
411e1bfb AM |
15766 | case R_PPC64_TOC16: |
15767 | case R_PPC64_TOC16_LO: | |
15768 | case R_PPC64_TOC16_DS: | |
15769 | case R_PPC64_TOC16_LO_DS: | |
411e1bfb AM |
15770 | { |
15771 | /* Check for toc tls entries. */ | |
f961d9dd | 15772 | unsigned char *toc_tls; |
951fd09b | 15773 | int retval; |
411e1bfb | 15774 | |
3a71aa26 AM |
15775 | retval = get_tls_mask (&toc_tls, &toc_symndx, &toc_addend, |
15776 | &local_syms, rel, input_bfd); | |
951fd09b | 15777 | if (retval == 0) |
0a1b45a2 | 15778 | return false; |
411e1bfb AM |
15779 | |
15780 | if (toc_tls) | |
15781 | { | |
951fd09b | 15782 | tls_mask = *toc_tls; |
411e1bfb AM |
15783 | if (r_type == R_PPC64_TOC16_DS |
15784 | || r_type == R_PPC64_TOC16_LO_DS) | |
81407a69 | 15785 | { |
37da22e5 | 15786 | if ((tls_mask & TLS_TLS) != 0 |
81407a69 AM |
15787 | && (tls_mask & (TLS_DTPREL | TLS_TPREL)) == 0) |
15788 | goto toctprel; | |
15789 | } | |
411e1bfb | 15790 | else |
951fd09b AM |
15791 | { |
15792 | /* If we found a GD reloc pair, then we might be | |
15793 | doing a GD->IE transition. */ | |
15794 | if (retval == 2) | |
15795 | { | |
b00a0a86 | 15796 | tls_gd = TLS_GDIE; |
37da22e5 AM |
15797 | if ((tls_mask & TLS_TLS) != 0 |
15798 | && (tls_mask & TLS_GD) == 0) | |
102890f0 | 15799 | goto tls_ldgd_opt; |
951fd09b AM |
15800 | } |
15801 | else if (retval == 3) | |
15802 | { | |
37da22e5 AM |
15803 | if ((tls_mask & TLS_TLS) != 0 |
15804 | && (tls_mask & TLS_LD) == 0) | |
102890f0 | 15805 | goto tls_ldgd_opt; |
951fd09b AM |
15806 | } |
15807 | } | |
411e1bfb AM |
15808 | } |
15809 | } | |
15810 | break; | |
15811 | ||
9d6ded02 AM |
15812 | case R_PPC64_GOT_TPREL16_HI: |
15813 | case R_PPC64_GOT_TPREL16_HA: | |
37da22e5 | 15814 | if ((tls_mask & TLS_TLS) != 0 |
733ae98c AM |
15815 | && (tls_mask & TLS_TPREL) == 0 |
15816 | && offset_in_range (input_section, rel->r_offset - d_offset, 4)) | |
9d6ded02 AM |
15817 | { |
15818 | rel->r_offset -= d_offset; | |
95f0d0d2 | 15819 | bfd_put_32 (input_bfd, NOP, contents + rel->r_offset); |
9d6ded02 AM |
15820 | r_type = R_PPC64_NONE; |
15821 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
15822 | } | |
15823 | break; | |
15824 | ||
411e1bfb AM |
15825 | case R_PPC64_GOT_TPREL16_DS: |
15826 | case R_PPC64_GOT_TPREL16_LO_DS: | |
37da22e5 | 15827 | if ((tls_mask & TLS_TLS) != 0 |
733ae98c AM |
15828 | && (tls_mask & TLS_TPREL) == 0 |
15829 | && offset_in_range (input_section, rel->r_offset - d_offset, 4)) | |
411e1bfb | 15830 | { |
81407a69 | 15831 | toctprel: |
95f0d0d2 | 15832 | insn = bfd_get_32 (input_bfd, |
c316a17c | 15833 | contents + rel->r_offset - d_offset); |
411e1bfb AM |
15834 | insn &= 31 << 21; |
15835 | insn |= 0x3c0d0000; /* addis 0,13,0 */ | |
95f0d0d2 | 15836 | bfd_put_32 (input_bfd, insn, |
c316a17c | 15837 | contents + rel->r_offset - d_offset); |
411e1bfb | 15838 | r_type = R_PPC64_TPREL16_HA; |
0d4792f7 AM |
15839 | if (toc_symndx != 0) |
15840 | { | |
15841 | rel->r_info = ELF64_R_INFO (toc_symndx, r_type); | |
3a71aa26 | 15842 | rel->r_addend = toc_addend; |
0d4792f7 AM |
15843 | /* We changed the symbol. Start over in order to |
15844 | get h, sym, sec etc. right. */ | |
c316a17c | 15845 | goto again; |
0d4792f7 AM |
15846 | } |
15847 | else | |
15848 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
411e1bfb AM |
15849 | } |
15850 | break; | |
15851 | ||
87c69f97 | 15852 | case R_PPC64_GOT_TPREL_PCREL34: |
c213164a | 15853 | if ((tls_mask & TLS_TLS) != 0 |
733ae98c AM |
15854 | && (tls_mask & TLS_TPREL) == 0 |
15855 | && offset_in_range (input_section, rel->r_offset, 8)) | |
c213164a AM |
15856 | { |
15857 | /* pld ra,sym@got@tprel@pcrel -> paddi ra,r13,sym@tprel */ | |
15858 | pinsn = bfd_get_32 (input_bfd, contents + rel->r_offset); | |
15859 | pinsn <<= 32; | |
15860 | pinsn |= bfd_get_32 (input_bfd, contents + rel->r_offset + 4); | |
15861 | pinsn += ((2ULL << 56) + (-1ULL << 52) | |
15862 | + (14ULL << 26) - (57ULL << 26) + (13ULL << 16)); | |
15863 | bfd_put_32 (input_bfd, pinsn >> 32, | |
15864 | contents + rel->r_offset); | |
15865 | bfd_put_32 (input_bfd, pinsn & 0xffffffff, | |
15866 | contents + rel->r_offset + 4); | |
15867 | r_type = R_PPC64_TPREL34; | |
15868 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
15869 | } | |
15870 | break; | |
15871 | ||
411e1bfb | 15872 | case R_PPC64_TLS: |
37da22e5 | 15873 | if ((tls_mask & TLS_TLS) != 0 |
733ae98c AM |
15874 | && (tls_mask & TLS_TPREL) == 0 |
15875 | && offset_in_range (input_section, rel->r_offset & ~3, 4)) | |
411e1bfb | 15876 | { |
c213164a | 15877 | insn = bfd_get_32 (input_bfd, contents + (rel->r_offset & ~3)); |
2d0f3896 AM |
15878 | insn = _bfd_elf_ppc_at_tls_transform (insn, 13); |
15879 | if (insn == 0) | |
c213164a AM |
15880 | break; |
15881 | if ((rel->r_offset & 3) == 0) | |
0d4792f7 | 15882 | { |
c213164a AM |
15883 | bfd_put_32 (input_bfd, insn, contents + rel->r_offset); |
15884 | /* Was PPC64_TLS which sits on insn boundary, now | |
15885 | PPC64_TPREL16_LO which is at low-order half-word. */ | |
15886 | rel->r_offset += d_offset; | |
15887 | r_type = R_PPC64_TPREL16_LO; | |
15888 | if (toc_symndx != 0) | |
15889 | { | |
15890 | rel->r_info = ELF64_R_INFO (toc_symndx, r_type); | |
15891 | rel->r_addend = toc_addend; | |
15892 | /* We changed the symbol. Start over in order to | |
15893 | get h, sym, sec etc. right. */ | |
15894 | goto again; | |
15895 | } | |
15896 | else | |
15897 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
15898 | } | |
15899 | else if ((rel->r_offset & 3) == 1) | |
15900 | { | |
15901 | /* For pcrel IE to LE we already have the full | |
15902 | offset and thus don't need an addi here. A nop | |
15903 | or mr will do. */ | |
2365f8d7 | 15904 | if ((insn & (0x3fu << 26)) == 14 << 26) |
c213164a AM |
15905 | { |
15906 | /* Extract regs from addi rt,ra,si. */ | |
15907 | unsigned int rt = (insn >> 21) & 0x1f; | |
15908 | unsigned int ra = (insn >> 16) & 0x1f; | |
15909 | if (rt == ra) | |
15910 | insn = NOP; | |
15911 | else | |
15912 | { | |
15913 | /* Build or ra,rs,rb with rb==rs, ie. mr ra,rs. */ | |
15914 | insn = (rt << 16) | (ra << 21) | (ra << 11); | |
15915 | insn |= (31u << 26) | (444u << 1); | |
15916 | } | |
15917 | } | |
15918 | bfd_put_32 (input_bfd, insn, contents + rel->r_offset - 1); | |
0d4792f7 | 15919 | } |
411e1bfb AM |
15920 | } |
15921 | break; | |
15922 | ||
411e1bfb AM |
15923 | case R_PPC64_GOT_TLSGD16_HI: |
15924 | case R_PPC64_GOT_TLSGD16_HA: | |
b00a0a86 | 15925 | tls_gd = TLS_GDIE; |
733ae98c AM |
15926 | if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_GD) == 0 |
15927 | && offset_in_range (input_section, rel->r_offset & ~3, 4)) | |
951fd09b AM |
15928 | goto tls_gdld_hi; |
15929 | break; | |
15930 | ||
411e1bfb AM |
15931 | case R_PPC64_GOT_TLSLD16_HI: |
15932 | case R_PPC64_GOT_TLSLD16_HA: | |
733ae98c AM |
15933 | if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_LD) == 0 |
15934 | && offset_in_range (input_section, rel->r_offset & ~3, 4)) | |
411e1bfb | 15935 | { |
951fd09b AM |
15936 | tls_gdld_hi: |
15937 | if ((tls_mask & tls_gd) != 0) | |
15938 | r_type = (((r_type - (R_PPC64_GOT_TLSGD16 & 3)) & 3) | |
15939 | + R_PPC64_GOT_TPREL16_DS); | |
15940 | else | |
411e1bfb | 15941 | { |
4fe5ca5b | 15942 | rel->r_offset -= d_offset; |
95f0d0d2 | 15943 | bfd_put_32 (input_bfd, NOP, contents + rel->r_offset); |
951fd09b | 15944 | r_type = R_PPC64_NONE; |
411e1bfb | 15945 | } |
951fd09b | 15946 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); |
411e1bfb AM |
15947 | } |
15948 | break; | |
15949 | ||
951fd09b AM |
15950 | case R_PPC64_GOT_TLSGD16: |
15951 | case R_PPC64_GOT_TLSGD16_LO: | |
b00a0a86 | 15952 | tls_gd = TLS_GDIE; |
733ae98c AM |
15953 | if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_GD) == 0 |
15954 | && offset_in_range (input_section, rel->r_offset & ~3, 4)) | |
102890f0 | 15955 | goto tls_ldgd_opt; |
951fd09b | 15956 | break; |
411e1bfb | 15957 | |
951fd09b AM |
15958 | case R_PPC64_GOT_TLSLD16: |
15959 | case R_PPC64_GOT_TLSLD16_LO: | |
733ae98c AM |
15960 | if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_LD) == 0 |
15961 | && offset_in_range (input_section, rel->r_offset & ~3, 4)) | |
951fd09b | 15962 | { |
b9f04fe0 | 15963 | unsigned int insn1, insn2; |
102890f0 AM |
15964 | |
15965 | tls_ldgd_opt: | |
727fc41e AM |
15966 | offset = (bfd_vma) -1; |
15967 | /* If not using the newer R_PPC64_TLSGD/LD to mark | |
15968 | __tls_get_addr calls, we must trust that the call | |
15969 | stays with its arg setup insns, ie. that the next | |
15970 | reloc is the __tls_get_addr call associated with | |
15971 | the current reloc. Edit both insns. */ | |
9737e8af | 15972 | if (input_section->nomark_tls_get_addr |
727fc41e AM |
15973 | && rel + 1 < relend |
15974 | && branch_reloc_hash_match (input_bfd, rel + 1, | |
9e7028aa AM |
15975 | htab->tls_get_addr_fd, |
15976 | htab->tga_desc_fd, | |
727fc41e | 15977 | htab->tls_get_addr, |
9e7028aa | 15978 | htab->tga_desc)) |
727fc41e | 15979 | offset = rel[1].r_offset; |
b86ac8e3 AM |
15980 | /* We read the low GOT_TLS (or TOC16) insn because we |
15981 | need to keep the destination reg. It may be | |
15982 | something other than the usual r3, and moved to r3 | |
15983 | before the call by intervening code. */ | |
95f0d0d2 | 15984 | insn1 = bfd_get_32 (input_bfd, |
b86ac8e3 | 15985 | contents + rel->r_offset - d_offset); |
102890f0 | 15986 | if ((tls_mask & tls_gd) != 0) |
411e1bfb | 15987 | { |
102890f0 | 15988 | /* IE */ |
b86ac8e3 | 15989 | insn1 &= (0x1f << 21) | (0x1f << 16); |
2365f8d7 | 15990 | insn1 |= 58u << 26; /* ld */ |
102890f0 | 15991 | insn2 = 0x7c636a14; /* add 3,3,13 */ |
727fc41e | 15992 | if (offset != (bfd_vma) -1) |
f58d5a2d | 15993 | rel[1].r_info = ELF64_R_INFO (STN_UNDEF, R_PPC64_NONE); |
46e9995a AM |
15994 | if (r_type == R_PPC64_TOC16 |
15995 | || r_type == R_PPC64_TOC16_LO) | |
102890f0 | 15996 | r_type += R_PPC64_TOC16_DS - R_PPC64_TOC16; |
46e9995a AM |
15997 | else |
15998 | r_type = (((r_type - (R_PPC64_GOT_TLSGD16 & 1)) & 1) | |
15999 | + R_PPC64_GOT_TPREL16_DS); | |
102890f0 AM |
16000 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); |
16001 | } | |
16002 | else | |
16003 | { | |
16004 | /* LE */ | |
b86ac8e3 AM |
16005 | insn1 &= 0x1f << 21; |
16006 | insn1 |= 0x3c0d0000; /* addis r,13,0 */ | |
102890f0 AM |
16007 | insn2 = 0x38630000; /* addi 3,3,0 */ |
16008 | if (tls_gd == 0) | |
951fd09b | 16009 | { |
102890f0 | 16010 | /* Was an LD reloc. */ |
71c4e95a | 16011 | r_symndx = STN_UNDEF; |
102890f0 | 16012 | rel->r_addend = htab->elf.tls_sec->vma + DTP_OFFSET; |
951fd09b | 16013 | } |
102890f0 | 16014 | else if (toc_symndx != 0) |
3a71aa26 AM |
16015 | { |
16016 | r_symndx = toc_symndx; | |
16017 | rel->r_addend = toc_addend; | |
16018 | } | |
102890f0 AM |
16019 | r_type = R_PPC64_TPREL16_HA; |
16020 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
727fc41e AM |
16021 | if (offset != (bfd_vma) -1) |
16022 | { | |
16023 | rel[1].r_info = ELF64_R_INFO (r_symndx, | |
16024 | R_PPC64_TPREL16_LO); | |
16025 | rel[1].r_offset = offset + d_offset; | |
16026 | rel[1].r_addend = rel->r_addend; | |
16027 | } | |
102890f0 | 16028 | } |
95f0d0d2 | 16029 | bfd_put_32 (input_bfd, insn1, |
3a71aa26 | 16030 | contents + rel->r_offset - d_offset); |
733ae98c AM |
16031 | if (offset != (bfd_vma) -1 |
16032 | && offset_in_range (input_section, offset, 4)) | |
c96e0573 AM |
16033 | { |
16034 | bfd_put_32 (input_bfd, insn2, contents + offset); | |
733ae98c | 16035 | if (offset_in_range (input_section, offset + 4, 4)) |
c96e0573 AM |
16036 | { |
16037 | insn2 = bfd_get_32 (input_bfd, contents + offset + 4); | |
16038 | if (insn2 == LD_R2_0R1 + STK_TOC (htab)) | |
16039 | bfd_put_32 (input_bfd, NOP, contents + offset + 4); | |
16040 | } | |
16041 | } | |
727fc41e AM |
16042 | if ((tls_mask & tls_gd) == 0 |
16043 | && (tls_gd == 0 || toc_symndx != 0)) | |
16044 | { | |
16045 | /* We changed the symbol. Start over in order | |
16046 | to get h, sym, sec etc. right. */ | |
c316a17c | 16047 | goto again; |
727fc41e AM |
16048 | } |
16049 | } | |
16050 | break; | |
16051 | ||
87c69f97 | 16052 | case R_PPC64_GOT_TLSGD_PCREL34: |
733ae98c AM |
16053 | if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_GD) == 0 |
16054 | && offset_in_range (input_section, rel->r_offset, 8)) | |
c213164a AM |
16055 | { |
16056 | pinsn = bfd_get_32 (input_bfd, contents + rel->r_offset); | |
16057 | pinsn <<= 32; | |
16058 | pinsn |= bfd_get_32 (input_bfd, contents + rel->r_offset + 4); | |
16059 | if ((tls_mask & TLS_GDIE) != 0) | |
16060 | { | |
16061 | /* IE, pla -> pld */ | |
16062 | pinsn += (-2ULL << 56) + (57ULL << 26) - (14ULL << 26); | |
87c69f97 | 16063 | r_type = R_PPC64_GOT_TPREL_PCREL34; |
c213164a AM |
16064 | } |
16065 | else | |
16066 | { | |
16067 | /* LE, pla pcrel -> paddi r13 */ | |
16068 | pinsn += (-1ULL << 52) + (13ULL << 16); | |
16069 | r_type = R_PPC64_TPREL34; | |
16070 | } | |
16071 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
16072 | bfd_put_32 (input_bfd, pinsn >> 32, | |
16073 | contents + rel->r_offset); | |
16074 | bfd_put_32 (input_bfd, pinsn & 0xffffffff, | |
16075 | contents + rel->r_offset + 4); | |
16076 | } | |
16077 | break; | |
16078 | ||
87c69f97 | 16079 | case R_PPC64_GOT_TLSLD_PCREL34: |
733ae98c AM |
16080 | if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_LD) == 0 |
16081 | && offset_in_range (input_section, rel->r_offset, 8)) | |
c213164a AM |
16082 | { |
16083 | pinsn = bfd_get_32 (input_bfd, contents + rel->r_offset); | |
16084 | pinsn <<= 32; | |
16085 | pinsn |= bfd_get_32 (input_bfd, contents + rel->r_offset + 4); | |
16086 | pinsn += (-1ULL << 52) + (13ULL << 16); | |
16087 | bfd_put_32 (input_bfd, pinsn >> 32, | |
16088 | contents + rel->r_offset); | |
16089 | bfd_put_32 (input_bfd, pinsn & 0xffffffff, | |
16090 | contents + rel->r_offset + 4); | |
16091 | rel->r_addend = htab->elf.tls_sec->vma + DTP_OFFSET; | |
16092 | r_symndx = STN_UNDEF; | |
16093 | r_type = R_PPC64_TPREL34; | |
16094 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
16095 | goto again; | |
16096 | } | |
16097 | break; | |
16098 | ||
727fc41e | 16099 | case R_PPC64_TLSGD: |
37da22e5 | 16100 | if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_GD) == 0 |
733ae98c AM |
16101 | && rel + 1 < relend |
16102 | && offset_in_range (input_section, rel->r_offset, | |
16103 | is_8byte_reloc (ELF64_R_TYPE (rel[1].r_info)) | |
16104 | ? 8 : 4)) | |
727fc41e | 16105 | { |
b9f04fe0 | 16106 | unsigned int insn2; |
5663e321 | 16107 | enum elf_ppc64_reloc_type r_type1 = ELF64_R_TYPE (rel[1].r_info); |
727fc41e | 16108 | |
4a421c53 | 16109 | offset = rel->r_offset; |
5663e321 | 16110 | if (is_plt_seq_reloc (r_type1)) |
23cedd1d AM |
16111 | { |
16112 | bfd_put_32 (output_bfd, NOP, contents + offset); | |
5663e321 AM |
16113 | if (r_type1 == R_PPC64_PLT_PCREL34 |
16114 | || r_type1 == R_PPC64_PLT_PCREL34_NOTOC) | |
16115 | bfd_put_32 (output_bfd, NOP, contents + offset + 4); | |
23cedd1d AM |
16116 | rel[1].r_info = ELF64_R_INFO (STN_UNDEF, R_PPC64_NONE); |
16117 | break; | |
16118 | } | |
16119 | ||
733ae98c | 16120 | if (r_type1 == R_PPC64_PLTCALL) |
23cedd1d AM |
16121 | bfd_put_32 (output_bfd, NOP, contents + offset + 4); |
16122 | ||
b00a0a86 | 16123 | if ((tls_mask & TLS_GDIE) != 0) |
727fc41e AM |
16124 | { |
16125 | /* IE */ | |
16126 | r_type = R_PPC64_NONE; | |
16127 | insn2 = 0x7c636a14; /* add 3,3,13 */ | |
16128 | } | |
16129 | else | |
16130 | { | |
16131 | /* LE */ | |
16132 | if (toc_symndx != 0) | |
16133 | { | |
16134 | r_symndx = toc_symndx; | |
16135 | rel->r_addend = toc_addend; | |
16136 | } | |
c213164a | 16137 | if (r_type1 == R_PPC64_REL24_NOTOC |
7aba54da | 16138 | || r_type1 == R_PPC64_REL24_P9NOTOC |
c213164a AM |
16139 | || r_type1 == R_PPC64_PLTCALL_NOTOC) |
16140 | { | |
16141 | r_type = R_PPC64_NONE; | |
16142 | insn2 = NOP; | |
16143 | } | |
16144 | else | |
16145 | { | |
16146 | rel->r_offset = offset + d_offset; | |
16147 | r_type = R_PPC64_TPREL16_LO; | |
16148 | insn2 = 0x38630000; /* addi 3,3,0 */ | |
16149 | } | |
727fc41e AM |
16150 | } |
16151 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
16152 | /* Zap the reloc on the _tls_get_addr call too. */ | |
16153 | BFD_ASSERT (offset == rel[1].r_offset); | |
f58d5a2d | 16154 | rel[1].r_info = ELF64_R_INFO (STN_UNDEF, R_PPC64_NONE); |
95f0d0d2 | 16155 | bfd_put_32 (input_bfd, insn2, contents + offset); |
c213164a AM |
16156 | if ((tls_mask & TLS_GDIE) == 0 |
16157 | && toc_symndx != 0 | |
16158 | && r_type != R_PPC64_NONE) | |
c316a17c | 16159 | goto again; |
411e1bfb | 16160 | } |
411e1bfb AM |
16161 | break; |
16162 | ||
727fc41e | 16163 | case R_PPC64_TLSLD: |
37da22e5 | 16164 | if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_LD) == 0 |
733ae98c AM |
16165 | && rel + 1 < relend |
16166 | && offset_in_range (input_section, rel->r_offset, | |
16167 | is_8byte_reloc (ELF64_R_TYPE (rel[1].r_info)) | |
16168 | ? 8 : 4)) | |
727fc41e | 16169 | { |
b9f04fe0 | 16170 | unsigned int insn2; |
5663e321 | 16171 | enum elf_ppc64_reloc_type r_type1 = ELF64_R_TYPE (rel[1].r_info); |
727fc41e | 16172 | |
4a421c53 | 16173 | offset = rel->r_offset; |
5663e321 | 16174 | if (is_plt_seq_reloc (r_type1)) |
23cedd1d AM |
16175 | { |
16176 | bfd_put_32 (output_bfd, NOP, contents + offset); | |
5663e321 AM |
16177 | if (r_type1 == R_PPC64_PLT_PCREL34 |
16178 | || r_type1 == R_PPC64_PLT_PCREL34_NOTOC) | |
16179 | bfd_put_32 (output_bfd, NOP, contents + offset + 4); | |
23cedd1d AM |
16180 | rel[1].r_info = ELF64_R_INFO (STN_UNDEF, R_PPC64_NONE); |
16181 | break; | |
16182 | } | |
16183 | ||
733ae98c | 16184 | if (r_type1 == R_PPC64_PLTCALL) |
23cedd1d AM |
16185 | bfd_put_32 (output_bfd, NOP, contents + offset + 4); |
16186 | ||
c213164a | 16187 | if (r_type1 == R_PPC64_REL24_NOTOC |
7aba54da | 16188 | || r_type1 == R_PPC64_REL24_P9NOTOC |
c213164a AM |
16189 | || r_type1 == R_PPC64_PLTCALL_NOTOC) |
16190 | { | |
16191 | r_type = R_PPC64_NONE; | |
16192 | insn2 = NOP; | |
16193 | } | |
16194 | else | |
16195 | { | |
16196 | rel->r_offset = offset + d_offset; | |
16197 | r_symndx = STN_UNDEF; | |
16198 | r_type = R_PPC64_TPREL16_LO; | |
16199 | rel->r_addend = htab->elf.tls_sec->vma + DTP_OFFSET; | |
16200 | insn2 = 0x38630000; /* addi 3,3,0 */ | |
16201 | } | |
727fc41e | 16202 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); |
727fc41e AM |
16203 | /* Zap the reloc on the _tls_get_addr call too. */ |
16204 | BFD_ASSERT (offset == rel[1].r_offset); | |
f58d5a2d | 16205 | rel[1].r_info = ELF64_R_INFO (STN_UNDEF, R_PPC64_NONE); |
95f0d0d2 | 16206 | bfd_put_32 (input_bfd, insn2, contents + offset); |
c213164a AM |
16207 | if (r_type != R_PPC64_NONE) |
16208 | goto again; | |
727fc41e AM |
16209 | } |
16210 | break; | |
16211 | ||
411e1bfb | 16212 | case R_PPC64_DTPMOD64: |
951fd09b AM |
16213 | if (rel + 1 < relend |
16214 | && rel[1].r_info == ELF64_R_INFO (r_symndx, R_PPC64_DTPREL64) | |
16215 | && rel[1].r_offset == rel->r_offset + 8) | |
411e1bfb | 16216 | { |
733ae98c AM |
16217 | if ((tls_mask & TLS_GD) == 0 |
16218 | && offset_in_range (input_section, rel->r_offset, 8)) | |
951fd09b AM |
16219 | { |
16220 | rel[1].r_info = ELF64_R_INFO (r_symndx, R_PPC64_NONE); | |
b00a0a86 | 16221 | if ((tls_mask & TLS_GDIE) != 0) |
951fd09b AM |
16222 | r_type = R_PPC64_TPREL64; |
16223 | else | |
16224 | { | |
4ce794b7 | 16225 | bfd_put_64 (output_bfd, 1, contents + rel->r_offset); |
951fd09b AM |
16226 | r_type = R_PPC64_NONE; |
16227 | } | |
16228 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
16229 | } | |
16230 | } | |
16231 | else | |
16232 | { | |
733ae98c AM |
16233 | if ((tls_mask & TLS_LD) == 0 |
16234 | && offset_in_range (input_section, rel->r_offset, 8)) | |
411e1bfb | 16235 | { |
4ce794b7 | 16236 | bfd_put_64 (output_bfd, 1, contents + rel->r_offset); |
411e1bfb | 16237 | r_type = R_PPC64_NONE; |
951fd09b | 16238 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); |
411e1bfb | 16239 | } |
411e1bfb AM |
16240 | } |
16241 | break; | |
16242 | ||
16243 | case R_PPC64_TPREL64: | |
951fd09b | 16244 | if ((tls_mask & TLS_TPREL) == 0) |
411e1bfb AM |
16245 | { |
16246 | r_type = R_PPC64_NONE; | |
16247 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
16248 | } | |
16249 | break; | |
52a82034 | 16250 | |
006589cf AM |
16251 | case R_PPC64_ENTRY: |
16252 | relocation = TOCstart + htab->sec_info[input_section->id].toc_off; | |
16253 | if (!bfd_link_pic (info) | |
16254 | && !info->traditional_format | |
733ae98c AM |
16255 | && relocation + 0x80008000 <= 0xffffffff |
16256 | && offset_in_range (input_section, rel->r_offset, 8)) | |
006589cf AM |
16257 | { |
16258 | unsigned int insn1, insn2; | |
16259 | ||
16260 | insn1 = bfd_get_32 (input_bfd, contents + rel->r_offset); | |
16261 | insn2 = bfd_get_32 (input_bfd, contents + rel->r_offset + 4); | |
16262 | if ((insn1 & ~0xfffc) == LD_R2_0R12 | |
16263 | && insn2 == ADD_R2_R2_R12) | |
16264 | { | |
95f0d0d2 | 16265 | bfd_put_32 (input_bfd, |
006589cf AM |
16266 | LIS_R2 + PPC_HA (relocation), |
16267 | contents + rel->r_offset); | |
95f0d0d2 | 16268 | bfd_put_32 (input_bfd, |
006589cf AM |
16269 | ADDI_R2_R2 + PPC_LO (relocation), |
16270 | contents + rel->r_offset + 4); | |
16271 | } | |
16272 | } | |
16273 | else | |
16274 | { | |
16275 | relocation -= (rel->r_offset | |
16276 | + input_section->output_offset | |
16277 | + input_section->output_section->vma); | |
733ae98c AM |
16278 | if (relocation + 0x80008000 <= 0xffffffff |
16279 | && offset_in_range (input_section, rel->r_offset, 8)) | |
006589cf AM |
16280 | { |
16281 | unsigned int insn1, insn2; | |
16282 | ||
16283 | insn1 = bfd_get_32 (input_bfd, contents + rel->r_offset); | |
16284 | insn2 = bfd_get_32 (input_bfd, contents + rel->r_offset + 4); | |
16285 | if ((insn1 & ~0xfffc) == LD_R2_0R12 | |
16286 | && insn2 == ADD_R2_R2_R12) | |
16287 | { | |
95f0d0d2 | 16288 | bfd_put_32 (input_bfd, |
006589cf AM |
16289 | ADDIS_R2_R12 + PPC_HA (relocation), |
16290 | contents + rel->r_offset); | |
95f0d0d2 | 16291 | bfd_put_32 (input_bfd, |
006589cf AM |
16292 | ADDI_R2_R2 + PPC_LO (relocation), |
16293 | contents + rel->r_offset + 4); | |
16294 | } | |
16295 | } | |
16296 | } | |
16297 | break; | |
16298 | ||
52a82034 AM |
16299 | case R_PPC64_REL16_HA: |
16300 | /* If we are generating a non-PIC executable, edit | |
16301 | . 0: addis 2,12,.TOC.-0b@ha | |
16302 | . addi 2,2,.TOC.-0b@l | |
16303 | used by ELFv2 global entry points to set up r2, to | |
16304 | . lis 2,.TOC.@ha | |
16305 | . addi 2,2,.TOC.@l | |
16306 | if .TOC. is in range. */ | |
0e1862bb | 16307 | if (!bfd_link_pic (info) |
810d4e75 | 16308 | && !info->traditional_format |
006589cf | 16309 | && !htab->opd_abi |
4f038ee5 | 16310 | && rel->r_addend == d_offset |
52a82034 AM |
16311 | && h != NULL && &h->elf == htab->elf.hgot |
16312 | && rel + 1 < relend | |
16313 | && rel[1].r_info == ELF64_R_INFO (r_symndx, R_PPC64_REL16_LO) | |
16314 | && rel[1].r_offset == rel->r_offset + 4 | |
16315 | && rel[1].r_addend == rel->r_addend + 4 | |
733ae98c AM |
16316 | && relocation + 0x80008000 <= 0xffffffff |
16317 | && offset_in_range (input_section, rel->r_offset - d_offset, 8)) | |
52a82034 AM |
16318 | { |
16319 | unsigned int insn1, insn2; | |
4a421c53 | 16320 | offset = rel->r_offset - d_offset; |
95f0d0d2 AM |
16321 | insn1 = bfd_get_32 (input_bfd, contents + offset); |
16322 | insn2 = bfd_get_32 (input_bfd, contents + offset + 4); | |
006589cf AM |
16323 | if ((insn1 & 0xffff0000) == ADDIS_R2_R12 |
16324 | && (insn2 & 0xffff0000) == ADDI_R2_R2) | |
52a82034 AM |
16325 | { |
16326 | r_type = R_PPC64_ADDR16_HA; | |
16327 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
16328 | rel->r_addend -= d_offset; | |
16329 | rel[1].r_info = ELF64_R_INFO (r_symndx, R_PPC64_ADDR16_LO); | |
16330 | rel[1].r_addend -= d_offset + 4; | |
95f0d0d2 | 16331 | bfd_put_32 (input_bfd, LIS_R2, contents + offset); |
52a82034 AM |
16332 | } |
16333 | } | |
16334 | break; | |
411e1bfb AM |
16335 | } |
16336 | ||
16337 | /* Handle other relocations that tweak non-addend part of insn. */ | |
86c76c7b | 16338 | insn = 0; |
b25116a9 AM |
16339 | max_br_offset = 1 << 25; |
16340 | addend = rel->r_addend; | |
bc30df16 | 16341 | reloc_dest = DEST_NORMAL; |
65f38f15 | 16342 | switch (r_type) |
5bd4f169 AM |
16343 | { |
16344 | default: | |
65f38f15 | 16345 | break; |
5bd4f169 | 16346 | |
3b421ab3 AM |
16347 | case R_PPC64_TOCSAVE: |
16348 | if (relocation + addend == (rel->r_offset | |
16349 | + input_section->output_offset | |
16350 | + input_section->output_section->vma) | |
16351 | && tocsave_find (htab, NO_INSERT, | |
733ae98c AM |
16352 | &local_syms, rel, input_bfd) |
16353 | && offset_in_range (input_section, rel->r_offset, 4)) | |
3b421ab3 AM |
16354 | { |
16355 | insn = bfd_get_32 (input_bfd, contents + rel->r_offset); | |
16356 | if (insn == NOP | |
16357 | || insn == CROR_151515 || insn == CROR_313131) | |
a078d95a AM |
16358 | bfd_put_32 (input_bfd, |
16359 | STD_R2_0R1 + STK_TOC (htab), | |
3b421ab3 AM |
16360 | contents + rel->r_offset); |
16361 | } | |
16362 | break; | |
16363 | ||
65f38f15 AM |
16364 | /* Branch taken prediction relocations. */ |
16365 | case R_PPC64_ADDR14_BRTAKEN: | |
16366 | case R_PPC64_REL14_BRTAKEN: | |
cedb70c5 | 16367 | insn = 0x01 << 21; /* 'y' or 't' bit, lowest bit of BO field. */ |
1a0670f3 | 16368 | /* Fall through. */ |
65f38f15 | 16369 | |
86c76c7b | 16370 | /* Branch not taken prediction relocations. */ |
65f38f15 AM |
16371 | case R_PPC64_ADDR14_BRNTAKEN: |
16372 | case R_PPC64_REL14_BRNTAKEN: | |
733ae98c AM |
16373 | if (!offset_in_range (input_section, rel->r_offset, 4)) |
16374 | break; | |
95f0d0d2 | 16375 | insn |= bfd_get_32 (input_bfd, |
411e1bfb | 16376 | contents + rel->r_offset) & ~(0x01 << 21); |
1a0670f3 | 16377 | /* Fall through. */ |
86c76c7b | 16378 | |
b25116a9 AM |
16379 | case R_PPC64_REL14: |
16380 | max_br_offset = 1 << 15; | |
1a0670f3 | 16381 | /* Fall through. */ |
5bd4f169 | 16382 | |
65f38f15 | 16383 | case R_PPC64_REL24: |
05d0e962 | 16384 | case R_PPC64_REL24_NOTOC: |
7aba54da | 16385 | case R_PPC64_REL24_P9NOTOC: |
23cedd1d | 16386 | case R_PPC64_PLTCALL: |
5663e321 | 16387 | case R_PPC64_PLTCALL_NOTOC: |
ad8e1ba5 AM |
16388 | /* Calls to functions with a different TOC, such as calls to |
16389 | shared objects, need to alter the TOC pointer. This is | |
16390 | done using a linkage stub. A REL24 branching to these | |
16391 | linkage stubs needs to be followed by a nop, as the nop | |
16392 | will be replaced with an instruction to restore the TOC | |
16393 | base pointer. */ | |
8387904d | 16394 | fdh = h; |
b31867b6 AM |
16395 | if (h != NULL |
16396 | && h->oh != NULL | |
16397 | && h->oh->is_func_descriptor) | |
16398 | fdh = ppc_follow_link (h->oh); | |
31c76678 DK |
16399 | stub_entry = ppc_get_stub_entry (input_section, sec, fdh, &orig_rel, |
16400 | htab); | |
5663e321 AM |
16401 | if ((r_type == R_PPC64_PLTCALL |
16402 | || r_type == R_PPC64_PLTCALL_NOTOC) | |
23cedd1d | 16403 | && stub_entry != NULL |
7aba54da | 16404 | && stub_entry->type.main == ppc_stub_plt_call) |
23cedd1d AM |
16405 | stub_entry = NULL; |
16406 | ||
6abec6bc | 16407 | if (stub_entry != NULL |
7aba54da AM |
16408 | && (stub_entry->type.main == ppc_stub_plt_call |
16409 | || stub_entry->type.r2save)) | |
41bd81ab | 16410 | { |
0a1b45a2 | 16411 | bool can_plt_call = false; |
721956f4 | 16412 | |
7aba54da AM |
16413 | if (r_type == R_PPC64_REL24_NOTOC |
16414 | || r_type == R_PPC64_REL24_P9NOTOC) | |
6e1816be | 16415 | { |
7aba54da | 16416 | /* NOTOC calls don't need to restore r2. */ |
0a1b45a2 | 16417 | can_plt_call = true; |
6e1816be | 16418 | } |
7aba54da AM |
16419 | else if (stub_entry->type.main == ppc_stub_plt_call |
16420 | && !htab->opd_abi | |
16421 | && htab->params->plt_localentry0 != 0 | |
16422 | && h != NULL | |
16423 | && is_elfv2_localentry0 (&h->elf)) | |
05d0e962 | 16424 | { |
7aba54da | 16425 | /* The function doesn't use or change r2. */ |
0a1b45a2 | 16426 | can_plt_call = true; |
05d0e962 | 16427 | } |
6e1816be | 16428 | |
f378ab09 | 16429 | /* All of these stubs may modify r2, so there must be a |
ba8ca3e7 AM |
16430 | branch and link followed by a nop. The nop is |
16431 | replaced by an insn to restore r2. */ | |
733ae98c | 16432 | else if (offset_in_range (input_section, rel->r_offset, 8)) |
41bd81ab | 16433 | { |
ba8ca3e7 AM |
16434 | unsigned long br; |
16435 | ||
16436 | br = bfd_get_32 (input_bfd, | |
16437 | contents + rel->r_offset); | |
16438 | if ((br & 1) != 0) | |
41bd81ab | 16439 | { |
ba8ca3e7 AM |
16440 | unsigned long nop; |
16441 | ||
16442 | nop = bfd_get_32 (input_bfd, | |
16443 | contents + rel->r_offset + 4); | |
23cedd1d | 16444 | if (nop == LD_R2_0R1 + STK_TOC (htab)) |
0a1b45a2 | 16445 | can_plt_call = true; |
23cedd1d AM |
16446 | else if (nop == NOP |
16447 | || nop == CROR_151515 | |
16448 | || nop == CROR_313131) | |
a7f2871e | 16449 | { |
ba8ca3e7 | 16450 | if (h != NULL |
ed7007c1 | 16451 | && is_tls_get_addr (&h->elf, htab) |
7c9cf415 | 16452 | && htab->params->tls_get_addr_opt) |
ba8ca3e7 AM |
16453 | { |
16454 | /* Special stub used, leave nop alone. */ | |
16455 | } | |
16456 | else | |
a078d95a AM |
16457 | bfd_put_32 (input_bfd, |
16458 | LD_R2_0R1 + STK_TOC (htab), | |
ba8ca3e7 | 16459 | contents + rel->r_offset + 4); |
0a1b45a2 | 16460 | can_plt_call = true; |
a7f2871e | 16461 | } |
41bd81ab | 16462 | } |
5bd4f169 | 16463 | } |
721956f4 | 16464 | |
ba8ca3e7 | 16465 | if (!can_plt_call && h != NULL) |
721956f4 | 16466 | { |
ba8ca3e7 AM |
16467 | const char *name = h->elf.root.root.string; |
16468 | ||
16469 | if (*name == '.') | |
16470 | ++name; | |
16471 | ||
3f3328b8 | 16472 | if (startswith (name, "__libc_start_main") |
ba8ca3e7 | 16473 | && (name[17] == 0 || name[17] == '@')) |
6ab189d5 | 16474 | { |
ba8ca3e7 AM |
16475 | /* Allow crt1 branch to go via a toc adjusting |
16476 | stub. Other calls that never return could do | |
16477 | the same, if we could detect such. */ | |
0a1b45a2 | 16478 | can_plt_call = true; |
6ab189d5 | 16479 | } |
ba8ca3e7 AM |
16480 | } |
16481 | ||
16482 | if (!can_plt_call) | |
16483 | { | |
16484 | /* g++ as of 20130507 emits self-calls without a | |
16485 | following nop. This is arguably wrong since we | |
16486 | have conflicting information. On the one hand a | |
16487 | global symbol and on the other a local call | |
16488 | sequence, but don't error for this special case. | |
16489 | It isn't possible to cheaply verify we have | |
16490 | exactly such a call. Allow all calls to the same | |
16491 | section. */ | |
16492 | asection *code_sec = sec; | |
16493 | ||
16494 | if (get_opd_info (sec) != NULL) | |
ad8e1ba5 | 16495 | { |
ba8ca3e7 AM |
16496 | bfd_vma off = (relocation + addend |
16497 | - sec->output_section->vma | |
16498 | - sec->output_offset); | |
bc30df16 | 16499 | |
0a1b45a2 | 16500 | opd_entry_value (sec, off, &code_sec, NULL, false); |
ad8e1ba5 | 16501 | } |
ba8ca3e7 | 16502 | if (code_sec == input_section) |
0a1b45a2 | 16503 | can_plt_call = true; |
ba8ca3e7 AM |
16504 | } |
16505 | ||
16506 | if (!can_plt_call) | |
16507 | { | |
7aba54da | 16508 | if (stub_entry->type.main == ppc_stub_plt_call) |
4805fc55 | 16509 | info->callbacks->einfo |
695344c0 | 16510 | /* xgettext:c-format */ |
c1c8c1ef | 16511 | (_("%H: call to `%pT' lacks nop, can't restore toc; " |
f53ad3cf | 16512 | "(plt call stub)\n"), |
4805fc55 AM |
16513 | input_bfd, input_section, rel->r_offset, sym_name); |
16514 | else | |
16515 | info->callbacks->einfo | |
695344c0 | 16516 | /* xgettext:c-format */ |
c1c8c1ef | 16517 | (_("%H: call to `%pT' lacks nop, can't restore toc; " |
f53ad3cf | 16518 | "(toc save/adjust stub)\n"), |
4805fc55 | 16519 | input_bfd, input_section, rel->r_offset, sym_name); |
ba8ca3e7 AM |
16520 | |
16521 | bfd_set_error (bfd_error_bad_value); | |
0a1b45a2 | 16522 | ret = false; |
721956f4 AM |
16523 | } |
16524 | ||
b25116a9 | 16525 | if (can_plt_call |
7aba54da | 16526 | && stub_entry->type.main == ppc_stub_plt_call) |
0a1b45a2 | 16527 | unresolved_reloc = false; |
b25116a9 AM |
16528 | } |
16529 | ||
6abec6bc | 16530 | if ((stub_entry == NULL |
7aba54da AM |
16531 | || stub_entry->type.main == ppc_stub_long_branch |
16532 | || stub_entry->type.main == ppc_stub_plt_branch) | |
8387904d AM |
16533 | && get_opd_info (sec) != NULL) |
16534 | { | |
16535 | /* The branch destination is the value of the opd entry. */ | |
4cc603a5 AM |
16536 | bfd_vma off = (relocation + addend |
16537 | - sec->output_section->vma | |
16538 | - sec->output_offset); | |
0a1b45a2 | 16539 | bfd_vma dest = opd_entry_value (sec, off, NULL, NULL, false); |
8387904d AM |
16540 | if (dest != (bfd_vma) -1) |
16541 | { | |
16542 | relocation = dest; | |
16543 | addend = 0; | |
bc30df16 | 16544 | reloc_dest = DEST_OPD; |
8387904d AM |
16545 | } |
16546 | } | |
16547 | ||
b25116a9 AM |
16548 | /* If the branch is out of reach we ought to have a long |
16549 | branch stub. */ | |
16550 | from = (rel->r_offset | |
16551 | + input_section->output_offset | |
16552 | + input_section->output_section->vma); | |
16553 | ||
6911b7dc AM |
16554 | relocation += PPC64_LOCAL_ENTRY_OFFSET (fdh |
16555 | ? fdh->elf.other | |
16556 | : sym->st_other); | |
16557 | ||
6abec6bc | 16558 | if (stub_entry != NULL |
7aba54da AM |
16559 | && (stub_entry->type.main == ppc_stub_long_branch |
16560 | || stub_entry->type.main == ppc_stub_plt_branch)) | |
16561 | { | |
16562 | if (stub_entry->type.sub == ppc_stub_toc | |
16563 | && !stub_entry->type.r2save | |
16564 | && (r_type == R_PPC64_ADDR14_BRTAKEN | |
16565 | || r_type == R_PPC64_ADDR14_BRNTAKEN | |
16566 | || (relocation + addend - from + max_br_offset | |
16567 | < 2 * max_br_offset))) | |
16568 | /* Don't use the stub if this branch is in range. */ | |
16569 | stub_entry = NULL; | |
16570 | ||
16571 | if (stub_entry != NULL | |
16572 | && stub_entry->type.sub >= ppc_stub_notoc | |
16573 | && ((r_type != R_PPC64_REL24_NOTOC | |
16574 | && r_type != R_PPC64_REL24_P9NOTOC) | |
16575 | || ((fdh ? fdh->elf.other : sym->st_other) | |
16576 | & STO_PPC64_LOCAL_MASK) <= 1 << STO_PPC64_LOCAL_BIT) | |
16577 | && (relocation + addend - from + max_br_offset | |
16578 | < 2 * max_br_offset)) | |
16579 | stub_entry = NULL; | |
16580 | ||
16581 | if (stub_entry != NULL | |
16582 | && stub_entry->type.r2save | |
16583 | && (r_type == R_PPC64_REL24_NOTOC | |
16584 | || r_type == R_PPC64_REL24_P9NOTOC) | |
16585 | && (relocation + addend - from + max_br_offset | |
16586 | < 2 * max_br_offset)) | |
16587 | stub_entry = NULL; | |
16588 | } | |
05d0e962 | 16589 | |
b25116a9 AM |
16590 | if (stub_entry != NULL) |
16591 | { | |
16592 | /* Munge up the value and addend so that we call the stub | |
16593 | rather than the procedure directly. */ | |
a4b6fadd AM |
16594 | asection *stub_sec = stub_entry->group->stub_sec; |
16595 | ||
7aba54da | 16596 | if (stub_entry->type.main == ppc_stub_save_res) |
a4b6fadd AM |
16597 | relocation += (stub_sec->output_offset |
16598 | + stub_sec->output_section->vma | |
16599 | + stub_sec->size - htab->sfpr->size | |
16600 | - htab->sfpr->output_offset | |
16601 | - htab->sfpr->output_section->vma); | |
16602 | else | |
16603 | relocation = (stub_entry->stub_offset | |
16604 | + stub_sec->output_offset | |
16605 | + stub_sec->output_section->vma); | |
b25116a9 | 16606 | addend = 0; |
bc30df16 | 16607 | reloc_dest = DEST_STUB; |
3b421ab3 | 16608 | |
7aba54da AM |
16609 | if (((stub_entry->type.r2save |
16610 | && (r_type == R_PPC64_REL24_NOTOC | |
16611 | || r_type == R_PPC64_REL24_P9NOTOC)) | |
16612 | || ((stub_entry->type.main == ppc_stub_plt_call | |
16613 | && (ALWAYS_EMIT_R2SAVE || stub_entry->type.r2save)) | |
16614 | && rel + 1 < relend | |
16615 | && rel[1].r_offset == rel->r_offset + 4 | |
16616 | && ELF64_R_TYPE (rel[1].r_info) == R_PPC64_TOCSAVE)) | |
16617 | && !(stub_entry->type.main == ppc_stub_plt_call | |
16618 | && htab->params->tls_get_addr_opt | |
16619 | && h != NULL | |
16620 | && is_tls_get_addr (&h->elf, htab))) | |
29433886 AM |
16621 | { |
16622 | /* Skip over the r2 store at the start of the stub. */ | |
7aba54da | 16623 | relocation += 4; |
29433886 | 16624 | } |
5663e321 | 16625 | |
7aba54da AM |
16626 | if ((r_type == R_PPC64_REL24_NOTOC |
16627 | || r_type == R_PPC64_REL24_P9NOTOC) | |
16628 | && stub_entry->type.main == ppc_stub_plt_call | |
16629 | && stub_entry->type.sub >= ppc_stub_notoc) | |
5663e321 | 16630 | htab->notoc_plt = 1; |
b25116a9 AM |
16631 | } |
16632 | ||
16633 | if (insn != 0) | |
16634 | { | |
794e51c0 | 16635 | if (is_isa_v2) |
721956f4 | 16636 | { |
b25116a9 AM |
16637 | /* Set 'a' bit. This is 0b00010 in BO field for branch |
16638 | on CR(BI) insns (BO == 001at or 011at), and 0b01000 | |
16639 | for branch on CTR insns (BO == 1a00t or 1a01t). */ | |
16640 | if ((insn & (0x14 << 21)) == (0x04 << 21)) | |
16641 | insn |= 0x02 << 21; | |
16642 | else if ((insn & (0x14 << 21)) == (0x10 << 21)) | |
16643 | insn |= 0x08 << 21; | |
16644 | else | |
16645 | break; | |
16646 | } | |
16647 | else | |
16648 | { | |
16649 | /* Invert 'y' bit if not the default. */ | |
4cc603a5 | 16650 | if ((bfd_signed_vma) (relocation + addend - from) < 0) |
b25116a9 | 16651 | insn ^= 0x01 << 21; |
721956f4 | 16652 | } |
b25116a9 | 16653 | |
95f0d0d2 | 16654 | bfd_put_32 (input_bfd, insn, contents + rel->r_offset); |
5bd4f169 | 16655 | } |
e86ce104 | 16656 | |
06da1e8e AM |
16657 | /* NOP out calls to undefined weak functions. |
16658 | We can thus call a weak function without first | |
16659 | checking whether the function is defined. */ | |
b25116a9 | 16660 | else if (h != NULL |
039b3fef | 16661 | && h->elf.root.type == bfd_link_hash_undefweak |
766bc656 | 16662 | && h->elf.dynindx == -1 |
05d0e962 | 16663 | && (r_type == R_PPC64_REL24 |
7aba54da AM |
16664 | || r_type == R_PPC64_REL24_NOTOC |
16665 | || r_type == R_PPC64_REL24_P9NOTOC) | |
b25116a9 | 16666 | && relocation == 0 |
733ae98c AM |
16667 | && addend == 0 |
16668 | && offset_in_range (input_section, rel->r_offset, 4)) | |
e86ce104 | 16669 | { |
95f0d0d2 | 16670 | bfd_put_32 (input_bfd, NOP, contents + rel->r_offset); |
c316a17c | 16671 | goto copy_reloc; |
e86ce104 | 16672 | } |
65f38f15 | 16673 | break; |
066f4018 AM |
16674 | |
16675 | case R_PPC64_GOT16_DS: | |
6738c8a7 | 16676 | if ((h ? h->elf.type : ELF_ST_TYPE (sym->st_info)) == STT_GNU_IFUNC |
3a3a4c1f AM |
16677 | || (bfd_link_pic (info) |
16678 | && sec == bfd_abs_section_ptr) | |
6738c8a7 | 16679 | || !htab->do_toc_opt) |
06507dab | 16680 | break; |
066f4018 AM |
16681 | from = TOCstart + htab->sec_info[input_section->id].toc_off; |
16682 | if (relocation + addend - from + 0x8000 < 0x10000 | |
f5b9c288 AM |
16683 | && sec != NULL |
16684 | && sec->output_section != NULL | |
16685 | && !discarded_section (sec) | |
733ae98c AM |
16686 | && (h == NULL || SYMBOL_REFERENCES_LOCAL (info, &h->elf)) |
16687 | && offset_in_range (input_section, rel->r_offset & ~3, 4)) | |
066f4018 AM |
16688 | { |
16689 | insn = bfd_get_32 (input_bfd, contents + (rel->r_offset & ~3)); | |
2365f8d7 | 16690 | if ((insn & (0x3fu << 26 | 0x3)) == 58u << 26 /* ld */) |
066f4018 AM |
16691 | { |
16692 | insn += (14u << 26) - (58u << 26); | |
16693 | bfd_put_32 (input_bfd, insn, contents + (rel->r_offset & ~3)); | |
16694 | r_type = R_PPC64_TOC16; | |
16695 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
16696 | } | |
16697 | } | |
16698 | break; | |
16699 | ||
16700 | case R_PPC64_GOT16_LO_DS: | |
16701 | case R_PPC64_GOT16_HA: | |
6738c8a7 | 16702 | if ((h ? h->elf.type : ELF_ST_TYPE (sym->st_info)) == STT_GNU_IFUNC |
3a3a4c1f AM |
16703 | || (bfd_link_pic (info) |
16704 | && sec == bfd_abs_section_ptr) | |
6738c8a7 | 16705 | || !htab->do_toc_opt) |
06507dab | 16706 | break; |
066f4018 AM |
16707 | from = TOCstart + htab->sec_info[input_section->id].toc_off; |
16708 | if (relocation + addend - from + 0x80008000ULL < 0x100000000ULL | |
f5b9c288 AM |
16709 | && sec != NULL |
16710 | && sec->output_section != NULL | |
16711 | && !discarded_section (sec) | |
733ae98c AM |
16712 | && (h == NULL || SYMBOL_REFERENCES_LOCAL (info, &h->elf)) |
16713 | && offset_in_range (input_section, rel->r_offset & ~3, 4)) | |
066f4018 AM |
16714 | { |
16715 | insn = bfd_get_32 (input_bfd, contents + (rel->r_offset & ~3)); | |
fba8689a AM |
16716 | if (r_type == R_PPC64_GOT16_LO_DS |
16717 | && (insn & (0x3fu << 26 | 0x3)) == 58u << 26 /* ld */) | |
066f4018 AM |
16718 | { |
16719 | insn += (14u << 26) - (58u << 26); | |
16720 | bfd_put_32 (input_bfd, insn, contents + (rel->r_offset & ~3)); | |
16721 | r_type = R_PPC64_TOC16_LO; | |
16722 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
16723 | } | |
fba8689a AM |
16724 | else if (r_type == R_PPC64_GOT16_HA |
16725 | && (insn & (0x3fu << 26)) == 15u << 26 /* addis */) | |
066f4018 AM |
16726 | { |
16727 | r_type = R_PPC64_TOC16_HA; | |
16728 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
16729 | } | |
16730 | } | |
16731 | break; | |
4a421c53 AM |
16732 | |
16733 | case R_PPC64_GOT_PCREL34: | |
6738c8a7 | 16734 | if ((h ? h->elf.type : ELF_ST_TYPE (sym->st_info)) == STT_GNU_IFUNC |
3a3a4c1f AM |
16735 | || (bfd_link_pic (info) |
16736 | && sec == bfd_abs_section_ptr) | |
6738c8a7 | 16737 | || !htab->do_toc_opt) |
06507dab | 16738 | break; |
4a421c53 AM |
16739 | from = (rel->r_offset |
16740 | + input_section->output_section->vma | |
16741 | + input_section->output_offset); | |
6738c8a7 | 16742 | if (!(relocation - from + (1ULL << 33) < 1ULL << 34 |
f5b9c288 AM |
16743 | && sec != NULL |
16744 | && sec->output_section != NULL | |
16745 | && !discarded_section (sec) | |
733ae98c AM |
16746 | && (h == NULL || SYMBOL_REFERENCES_LOCAL (info, &h->elf)) |
16747 | && offset_in_range (input_section, rel->r_offset, 8))) | |
6738c8a7 AM |
16748 | break; |
16749 | ||
16750 | offset = rel->r_offset; | |
16751 | pinsn = bfd_get_32 (input_bfd, contents + offset); | |
16752 | pinsn <<= 32; | |
16753 | pinsn |= bfd_get_32 (input_bfd, contents + offset + 4); | |
16754 | if ((pinsn & ((-1ULL << 50) | (63ULL << 26))) | |
16755 | != ((1ULL << 58) | (1ULL << 52) | (57ULL << 26) /* pld */)) | |
16756 | break; | |
16757 | ||
16758 | /* Replace with paddi. */ | |
16759 | pinsn += (2ULL << 56) + (14ULL << 26) - (57ULL << 26); | |
16760 | r_type = R_PPC64_PCREL34; | |
16761 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
16762 | bfd_put_32 (input_bfd, pinsn >> 32, contents + offset); | |
16763 | bfd_put_32 (input_bfd, pinsn, contents + offset + 4); | |
16764 | /* Fall through. */ | |
4a421c53 AM |
16765 | |
16766 | case R_PPC64_PCREL34: | |
6738c8a7 AM |
16767 | if (!htab->params->no_pcrel_opt |
16768 | && rel + 1 < relend | |
16769 | && rel[1].r_offset == rel->r_offset | |
16770 | && rel[1].r_info == ELF64_R_INFO (0, R_PPC64_PCREL_OPT) | |
733ae98c AM |
16771 | && (h == NULL || SYMBOL_REFERENCES_LOCAL (info, &h->elf)) |
16772 | && offset_in_range (input_section, rel->r_offset, 8)) | |
4a421c53 AM |
16773 | { |
16774 | offset = rel->r_offset; | |
16775 | pinsn = bfd_get_32 (input_bfd, contents + offset); | |
16776 | pinsn <<= 32; | |
16777 | pinsn |= bfd_get_32 (input_bfd, contents + offset + 4); | |
16778 | if ((pinsn & ((-1ULL << 50) | (63ULL << 26))) | |
16779 | == ((1ULL << 58) | (2ULL << 56) | (1ULL << 52) | |
16780 | | (14ULL << 26) /* paddi */)) | |
16781 | { | |
6738c8a7 AM |
16782 | bfd_vma off2 = rel[1].r_addend; |
16783 | if (off2 == 0) | |
16784 | /* zero means next insn. */ | |
16785 | off2 = 8; | |
16786 | off2 += offset; | |
733ae98c | 16787 | if (offset_in_range (input_section, off2, 4)) |
4a421c53 | 16788 | { |
6738c8a7 AM |
16789 | uint64_t pinsn2; |
16790 | bfd_signed_vma addend_off; | |
16791 | pinsn2 = bfd_get_32 (input_bfd, contents + off2); | |
16792 | pinsn2 <<= 32; | |
16793 | if ((pinsn2 & (63ULL << 58)) == 1ULL << 58) | |
4a421c53 | 16794 | { |
733ae98c | 16795 | if (!offset_in_range (input_section, off2, 8)) |
6738c8a7 AM |
16796 | break; |
16797 | pinsn2 |= bfd_get_32 (input_bfd, | |
16798 | contents + off2 + 4); | |
16799 | } | |
16800 | if (xlate_pcrel_opt (&pinsn, &pinsn2, &addend_off)) | |
16801 | { | |
16802 | addend += addend_off; | |
16803 | rel->r_addend = addend; | |
16804 | bfd_put_32 (input_bfd, pinsn >> 32, | |
16805 | contents + offset); | |
16806 | bfd_put_32 (input_bfd, pinsn, | |
16807 | contents + offset + 4); | |
16808 | bfd_put_32 (input_bfd, pinsn2 >> 32, | |
16809 | contents + off2); | |
4a421c53 | 16810 | if ((pinsn2 & (63ULL << 58)) == 1ULL << 58) |
6738c8a7 AM |
16811 | bfd_put_32 (input_bfd, pinsn2, |
16812 | contents + off2 + 4); | |
4a421c53 AM |
16813 | } |
16814 | } | |
16815 | } | |
16816 | } | |
16817 | break; | |
65f38f15 | 16818 | } |
5bd4f169 | 16819 | |
411e1bfb | 16820 | tls_type = 0; |
23cedd1d | 16821 | save_unresolved_reloc = unresolved_reloc; |
65f38f15 AM |
16822 | switch (r_type) |
16823 | { | |
16824 | default: | |
cf97bcb0 AM |
16825 | /* xgettext:c-format */ |
16826 | _bfd_error_handler (_("%pB: %s unsupported"), | |
16827 | input_bfd, ppc64_elf_howto_table[r_type]->name); | |
5bd4f169 | 16828 | |
65f38f15 | 16829 | bfd_set_error (bfd_error_bad_value); |
0a1b45a2 | 16830 | ret = false; |
c316a17c | 16831 | goto copy_reloc; |
5bd4f169 | 16832 | |
65f38f15 | 16833 | case R_PPC64_NONE: |
411e1bfb | 16834 | case R_PPC64_TLS: |
727fc41e AM |
16835 | case R_PPC64_TLSGD: |
16836 | case R_PPC64_TLSLD: | |
3b421ab3 | 16837 | case R_PPC64_TOCSAVE: |
04c9666a AM |
16838 | case R_PPC64_GNU_VTINHERIT: |
16839 | case R_PPC64_GNU_VTENTRY: | |
006589cf | 16840 | case R_PPC64_ENTRY: |
4a421c53 | 16841 | case R_PPC64_PCREL_OPT: |
c316a17c | 16842 | goto copy_reloc; |
5bd4f169 AM |
16843 | |
16844 | /* GOT16 relocations. Like an ADDR16 using the symbol's | |
16845 | address in the GOT as relocation value instead of the | |
411e1bfb | 16846 | symbol's value itself. Also, create a GOT entry for the |
5bd4f169 | 16847 | symbol and put the symbol value there. */ |
411e1bfb AM |
16848 | case R_PPC64_GOT_TLSGD16: |
16849 | case R_PPC64_GOT_TLSGD16_LO: | |
16850 | case R_PPC64_GOT_TLSGD16_HI: | |
16851 | case R_PPC64_GOT_TLSGD16_HA: | |
87c69f97 | 16852 | case R_PPC64_GOT_TLSGD_PCREL34: |
951fd09b | 16853 | tls_type = TLS_TLS | TLS_GD; |
411e1bfb AM |
16854 | goto dogot; |
16855 | ||
16856 | case R_PPC64_GOT_TLSLD16: | |
16857 | case R_PPC64_GOT_TLSLD16_LO: | |
16858 | case R_PPC64_GOT_TLSLD16_HI: | |
16859 | case R_PPC64_GOT_TLSLD16_HA: | |
87c69f97 | 16860 | case R_PPC64_GOT_TLSLD_PCREL34: |
951fd09b | 16861 | tls_type = TLS_TLS | TLS_LD; |
411e1bfb AM |
16862 | goto dogot; |
16863 | ||
16864 | case R_PPC64_GOT_TPREL16_DS: | |
16865 | case R_PPC64_GOT_TPREL16_LO_DS: | |
16866 | case R_PPC64_GOT_TPREL16_HI: | |
16867 | case R_PPC64_GOT_TPREL16_HA: | |
87c69f97 | 16868 | case R_PPC64_GOT_TPREL_PCREL34: |
411e1bfb AM |
16869 | tls_type = TLS_TLS | TLS_TPREL; |
16870 | goto dogot; | |
16871 | ||
16872 | case R_PPC64_GOT_DTPREL16_DS: | |
16873 | case R_PPC64_GOT_DTPREL16_LO_DS: | |
16874 | case R_PPC64_GOT_DTPREL16_HI: | |
16875 | case R_PPC64_GOT_DTPREL16_HA: | |
87c69f97 | 16876 | case R_PPC64_GOT_DTPREL_PCREL34: |
411e1bfb AM |
16877 | tls_type = TLS_TLS | TLS_DTPREL; |
16878 | goto dogot; | |
16879 | ||
65f38f15 AM |
16880 | case R_PPC64_GOT16: |
16881 | case R_PPC64_GOT16_LO: | |
16882 | case R_PPC64_GOT16_HI: | |
16883 | case R_PPC64_GOT16_HA: | |
16884 | case R_PPC64_GOT16_DS: | |
16885 | case R_PPC64_GOT16_LO_DS: | |
5663e321 | 16886 | case R_PPC64_GOT_PCREL34: |
411e1bfb | 16887 | dogot: |
5bd4f169 AM |
16888 | { |
16889 | /* Relocation is to the entry for this symbol in the global | |
16890 | offset table. */ | |
e717da7e | 16891 | asection *got; |
d881513a | 16892 | bfd_vma *offp; |
5bd4f169 | 16893 | bfd_vma off; |
d881513a | 16894 | unsigned long indx = 0; |
927be08e | 16895 | struct got_entry *ent; |
65f38f15 | 16896 | |
d881513a | 16897 | if (tls_type == (TLS_TLS | TLS_LD) |
9e51d549 | 16898 | && (h == NULL || SYMBOL_REFERENCES_LOCAL (info, &h->elf))) |
927be08e | 16899 | ent = ppc64_tlsld_got (input_bfd); |
411e1bfb | 16900 | else |
5bd4f169 | 16901 | { |
d881513a AM |
16902 | if (h != NULL) |
16903 | { | |
f0158f44 AM |
16904 | if (!htab->elf.dynamic_sections_created |
16905 | || h->elf.dynindx == -1 | |
16906 | || SYMBOL_REFERENCES_LOCAL (info, &h->elf) | |
21d68fcd | 16907 | || UNDEFWEAK_NO_DYNAMIC_RELOC (info, &h->elf)) |
d881513a AM |
16908 | /* This is actually a static link, or it is a |
16909 | -Bsymbolic link and the symbol is defined | |
16910 | locally, or the symbol was forced to be local | |
16911 | because of a version file. */ | |
16912 | ; | |
16913 | else | |
16914 | { | |
039b3fef | 16915 | indx = h->elf.dynindx; |
0a1b45a2 | 16916 | unresolved_reloc = false; |
d881513a | 16917 | } |
039b3fef | 16918 | ent = h->elf.got.glist; |
d881513a | 16919 | } |
411e1bfb | 16920 | else |
5bd4f169 | 16921 | { |
d881513a AM |
16922 | if (local_got_ents == NULL) |
16923 | abort (); | |
16924 | ent = local_got_ents[r_symndx]; | |
5bd4f169 | 16925 | } |
d881513a AM |
16926 | |
16927 | for (; ent != NULL; ent = ent->next) | |
133a1f60 | 16928 | if (ent->addend == orig_rel.r_addend |
e717da7e | 16929 | && ent->owner == input_bfd |
d881513a AM |
16930 | && ent->tls_type == tls_type) |
16931 | break; | |
5bd4f169 | 16932 | } |
411e1bfb | 16933 | |
927be08e AM |
16934 | if (ent == NULL) |
16935 | abort (); | |
16936 | if (ent->is_indirect) | |
16937 | ent = ent->got.ent; | |
16938 | offp = &ent->got.offset; | |
16939 | got = ppc64_elf_tdata (ent->owner)->got; | |
e717da7e AM |
16940 | if (got == NULL) |
16941 | abort (); | |
16942 | ||
411e1bfb AM |
16943 | /* The offset must always be a multiple of 8. We use the |
16944 | least significant bit to record whether we have already | |
16945 | processed this entry. */ | |
d881513a | 16946 | off = *offp; |
411e1bfb AM |
16947 | if ((off & 1) != 0) |
16948 | off &= ~1; | |
5bd4f169 AM |
16949 | else |
16950 | { | |
411e1bfb AM |
16951 | /* Generate relocs for the dynamic linker, except in |
16952 | the case of TLSLD where we'll use one entry per | |
16953 | module. */ | |
25f23106 | 16954 | asection *relgot; |
0a1b45a2 | 16955 | bool ifunc; |
e717da7e | 16956 | |
d881513a | 16957 | *offp = off | 1; |
25f23106 AM |
16958 | relgot = NULL; |
16959 | ifunc = (h != NULL | |
16960 | ? h->elf.type == STT_GNU_IFUNC | |
16961 | : ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC); | |
19e08130 | 16962 | if (ifunc) |
82e66161 AM |
16963 | { |
16964 | relgot = htab->elf.irelplt; | |
efb2a7b4 | 16965 | if (indx == 0 || is_static_defined (&h->elf)) |
0a1b45a2 | 16966 | htab->elf.ifunc_resolvers = true; |
82e66161 | 16967 | } |
f0158f44 AM |
16968 | else if (indx != 0 |
16969 | || (bfd_link_pic (info) | |
16970 | && (h == NULL | |
f749f26e AM |
16971 | || !UNDEFWEAK_NO_DYNAMIC_RELOC (info, &h->elf)) |
16972 | && !(tls_type != 0 | |
f15d0b54 | 16973 | && bfd_link_executable (info) |
9e51d549 AM |
16974 | && (h == NULL |
16975 | || SYMBOL_REFERENCES_LOCAL (info, | |
3a3a4c1f AM |
16976 | &h->elf))) |
16977 | && (h != NULL | |
16978 | ? !bfd_is_abs_symbol (&h->elf.root) | |
16979 | : sym->st_shndx != SHN_ABS))) | |
16980 | ||
19e08130 | 16981 | relgot = ppc64_elf_tdata (ent->owner)->relgot; |
25f23106 | 16982 | if (relgot != NULL) |
5bd4f169 | 16983 | { |
e717da7e AM |
16984 | outrel.r_offset = (got->output_section->vma |
16985 | + got->output_offset | |
411e1bfb | 16986 | + off); |
133a1f60 | 16987 | outrel.r_addend = orig_rel.r_addend; |
d881513a | 16988 | if (tls_type & (TLS_LD | TLS_GD)) |
5bd4f169 | 16989 | { |
411e1bfb | 16990 | outrel.r_addend = 0; |
e515b051 | 16991 | outrel.r_info = ELF64_R_INFO (indx, R_PPC64_DTPMOD64); |
d881513a AM |
16992 | if (tls_type == (TLS_TLS | TLS_GD)) |
16993 | { | |
e717da7e AM |
16994 | loc = relgot->contents; |
16995 | loc += (relgot->reloc_count++ | |
d881513a AM |
16996 | * sizeof (Elf64_External_Rela)); |
16997 | bfd_elf64_swap_reloca_out (output_bfd, | |
16998 | &outrel, loc); | |
e515b051 | 16999 | outrel.r_offset += 8; |
133a1f60 | 17000 | outrel.r_addend = orig_rel.r_addend; |
d881513a AM |
17001 | outrel.r_info |
17002 | = ELF64_R_INFO (indx, R_PPC64_DTPREL64); | |
d881513a | 17003 | } |
411e1bfb | 17004 | } |
951fd09b | 17005 | else if (tls_type == (TLS_TLS | TLS_DTPREL)) |
411e1bfb | 17006 | outrel.r_info = ELF64_R_INFO (indx, R_PPC64_DTPREL64); |
951fd09b | 17007 | else if (tls_type == (TLS_TLS | TLS_TPREL)) |
411e1bfb | 17008 | outrel.r_info = ELF64_R_INFO (indx, R_PPC64_TPREL64); |
25f23106 AM |
17009 | else if (indx != 0) |
17010 | outrel.r_info = ELF64_R_INFO (indx, R_PPC64_GLOB_DAT); | |
17011 | else | |
81407a69 | 17012 | { |
25f23106 AM |
17013 | if (ifunc) |
17014 | outrel.r_info = ELF64_R_INFO (0, R_PPC64_IRELATIVE); | |
17015 | else | |
17016 | outrel.r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE); | |
81407a69 AM |
17017 | |
17018 | /* Write the .got section contents for the sake | |
17019 | of prelink. */ | |
e717da7e | 17020 | loc = got->contents + off; |
23fbd6fa JJ |
17021 | bfd_put_64 (output_bfd, outrel.r_addend + relocation, |
17022 | loc); | |
81407a69 | 17023 | } |
81407a69 AM |
17024 | |
17025 | if (indx == 0 && tls_type != (TLS_TLS | TLS_LD)) | |
e515b051 AM |
17026 | { |
17027 | outrel.r_addend += relocation; | |
17028 | if (tls_type & (TLS_GD | TLS_DTPREL | TLS_TPREL)) | |
989f9879 AM |
17029 | { |
17030 | if (htab->elf.tls_sec == NULL) | |
17031 | outrel.r_addend = 0; | |
17032 | else | |
17033 | outrel.r_addend -= htab->elf.tls_sec->vma; | |
17034 | } | |
e515b051 | 17035 | } |
1657026c AM |
17036 | if (!(info->enable_dt_relr |
17037 | && ELF64_R_TYPE (outrel.r_info) == R_PPC64_RELATIVE)) | |
17038 | { | |
17039 | loc = relgot->contents; | |
17040 | loc += (relgot->reloc_count++ | |
17041 | * sizeof (Elf64_External_Rela)); | |
17042 | bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc); | |
17043 | } | |
411e1bfb AM |
17044 | } |
17045 | ||
ad8e1ba5 | 17046 | /* Init the .got section contents here if we're not |
81407a69 | 17047 | emitting a reloc. */ |
d881513a | 17048 | else |
411e1bfb | 17049 | { |
133a1f60 | 17050 | relocation += orig_rel.r_addend; |
f0158f44 | 17051 | if (tls_type != 0) |
411e1bfb | 17052 | { |
989f9879 AM |
17053 | if (htab->elf.tls_sec == NULL) |
17054 | relocation = 0; | |
17055 | else | |
17056 | { | |
f0158f44 AM |
17057 | if (tls_type & TLS_LD) |
17058 | relocation = 0; | |
17059 | else | |
17060 | relocation -= htab->elf.tls_sec->vma + DTP_OFFSET; | |
676ee2b5 | 17061 | if (tls_type & TLS_TPREL) |
989f9879 AM |
17062 | relocation += DTP_OFFSET - TP_OFFSET; |
17063 | } | |
5bd4f169 | 17064 | |
f0158f44 | 17065 | if (tls_type & (TLS_GD | TLS_LD)) |
7b609f53 AM |
17066 | { |
17067 | bfd_put_64 (output_bfd, relocation, | |
e717da7e | 17068 | got->contents + off + 8); |
676ee2b5 | 17069 | relocation = 1; |
7b609f53 | 17070 | } |
411e1bfb AM |
17071 | } |
17072 | bfd_put_64 (output_bfd, relocation, | |
e717da7e | 17073 | got->contents + off); |
5bd4f169 AM |
17074 | } |
17075 | } | |
17076 | ||
65f38f15 AM |
17077 | if (off >= (bfd_vma) -2) |
17078 | abort (); | |
17079 | ||
bf102f86 | 17080 | relocation = got->output_section->vma + got->output_offset + off; |
133a1f60 | 17081 | addend = 0; |
c213164a | 17082 | if (!(r_type == R_PPC64_GOT_PCREL34 |
87c69f97 AM |
17083 | || r_type == R_PPC64_GOT_TLSGD_PCREL34 |
17084 | || r_type == R_PPC64_GOT_TLSLD_PCREL34 | |
17085 | || r_type == R_PPC64_GOT_TPREL_PCREL34 | |
17086 | || r_type == R_PPC64_GOT_DTPREL_PCREL34)) | |
5663e321 | 17087 | addend = -(TOCstart + htab->sec_info[input_section->id].toc_off); |
5bd4f169 | 17088 | } |
65f38f15 AM |
17089 | break; |
17090 | ||
17091 | case R_PPC64_PLT16_HA: | |
17092 | case R_PPC64_PLT16_HI: | |
17093 | case R_PPC64_PLT16_LO: | |
08be3224 | 17094 | case R_PPC64_PLT16_LO_DS: |
5663e321 AM |
17095 | case R_PPC64_PLT_PCREL34: |
17096 | case R_PPC64_PLT_PCREL34_NOTOC: | |
65f38f15 AM |
17097 | case R_PPC64_PLT32: |
17098 | case R_PPC64_PLT64: | |
23cedd1d | 17099 | case R_PPC64_PLTSEQ: |
5663e321 | 17100 | case R_PPC64_PLTSEQ_NOTOC: |
23cedd1d | 17101 | case R_PPC64_PLTCALL: |
5663e321 | 17102 | case R_PPC64_PLTCALL_NOTOC: |
65f38f15 AM |
17103 | /* Relocation is to the entry for this symbol in the |
17104 | procedure linkage table. */ | |
0a1b45a2 | 17105 | unresolved_reloc = true; |
cbf95972 AM |
17106 | { |
17107 | struct plt_entry **plt_list = NULL; | |
17108 | if (h != NULL) | |
17109 | plt_list = &h->elf.plt.plist; | |
17110 | else if (local_got_ents != NULL) | |
17111 | { | |
17112 | struct plt_entry **local_plt = (struct plt_entry **) | |
17113 | (local_got_ents + symtab_hdr->sh_info); | |
2d7ad24e | 17114 | plt_list = local_plt + r_symndx; |
cbf95972 AM |
17115 | } |
17116 | if (plt_list) | |
17117 | { | |
17118 | struct plt_entry *ent; | |
65f38f15 | 17119 | |
cbf95972 AM |
17120 | for (ent = *plt_list; ent != NULL; ent = ent->next) |
17121 | if (ent->plt.offset != (bfd_vma) -1 | |
133a1f60 | 17122 | && ent->addend == orig_rel.r_addend) |
cbf95972 AM |
17123 | { |
17124 | asection *plt; | |
08be3224 | 17125 | bfd_vma got; |
cbf95972 AM |
17126 | |
17127 | plt = htab->elf.splt; | |
30845f11 | 17128 | if (use_local_plt (info, elf_hash_entry (h))) |
2d7ad24e AM |
17129 | { |
17130 | if (h != NULL | |
17131 | ? h->elf.type == STT_GNU_IFUNC | |
17132 | : ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC) | |
17133 | plt = htab->elf.iplt; | |
17134 | else | |
17135 | plt = htab->pltlocal; | |
17136 | } | |
17137 | relocation = (plt->output_section->vma | |
17138 | + plt->output_offset | |
17139 | + ent->plt.offset); | |
08be3224 | 17140 | if (r_type == R_PPC64_PLT16_HA |
2cdcc330 AM |
17141 | || r_type == R_PPC64_PLT16_HI |
17142 | || r_type == R_PPC64_PLT16_LO | |
17143 | || r_type == R_PPC64_PLT16_LO_DS) | |
08be3224 AM |
17144 | { |
17145 | got = (elf_gp (output_bfd) | |
17146 | + htab->sec_info[input_section->id].toc_off); | |
17147 | relocation -= got; | |
17148 | } | |
133a1f60 | 17149 | addend = 0; |
0a1b45a2 | 17150 | unresolved_reloc = false; |
cbf95972 AM |
17151 | break; |
17152 | } | |
17153 | } | |
17154 | } | |
65f38f15 | 17155 | break; |
5bd4f169 | 17156 | |
0b13192e AM |
17157 | case R_PPC64_TOC: |
17158 | /* Relocation value is TOC base. */ | |
17159 | relocation = TOCstart; | |
cf35638d | 17160 | if (r_symndx == STN_UNDEF) |
6f20ed8a | 17161 | relocation += htab->sec_info[input_section->id].toc_off; |
8517fae7 AM |
17162 | else if (unresolved_reloc) |
17163 | ; | |
6f20ed8a AM |
17164 | else if (sec != NULL && sec->id < htab->sec_info_arr_size) |
17165 | relocation += htab->sec_info[sec->id].toc_off; | |
0b13192e | 17166 | else |
0a1b45a2 | 17167 | unresolved_reloc = true; |
10040916 AM |
17168 | if (unresolved_reloc |
17169 | || (!is_opd | |
17170 | && h != NULL | |
17171 | && !SYMBOL_REFERENCES_LOCAL (info, &h->elf))) | |
17172 | info->callbacks->einfo | |
17173 | /* xgettext:c-format */ | |
17174 | (_("%H: %s against %pT is not supported\n"), | |
17175 | input_bfd, input_section, rel->r_offset, | |
17176 | ppc64_elf_howto_table[r_type]->name, sym_name); | |
ab96bf03 | 17177 | goto dodyn; |
0b13192e | 17178 | |
5bd4f169 AM |
17179 | /* TOC16 relocs. We want the offset relative to the TOC base, |
17180 | which is the address of the start of the TOC plus 0x8000. | |
17181 | The TOC consists of sections .got, .toc, .tocbss, and .plt, | |
17182 | in this order. */ | |
65f38f15 AM |
17183 | case R_PPC64_TOC16: |
17184 | case R_PPC64_TOC16_LO: | |
17185 | case R_PPC64_TOC16_HI: | |
17186 | case R_PPC64_TOC16_DS: | |
17187 | case R_PPC64_TOC16_LO_DS: | |
17188 | case R_PPC64_TOC16_HA: | |
6f20ed8a | 17189 | addend -= TOCstart + htab->sec_info[input_section->id].toc_off; |
1bdd8fac AM |
17190 | if (h != NULL) |
17191 | goto dodyn; | |
5bd4f169 AM |
17192 | break; |
17193 | ||
17194 | /* Relocate against the beginning of the section. */ | |
65f38f15 AM |
17195 | case R_PPC64_SECTOFF: |
17196 | case R_PPC64_SECTOFF_LO: | |
17197 | case R_PPC64_SECTOFF_HI: | |
17198 | case R_PPC64_SECTOFF_DS: | |
17199 | case R_PPC64_SECTOFF_LO_DS: | |
17200 | case R_PPC64_SECTOFF_HA: | |
4ce794b7 | 17201 | if (sec != NULL) |
65f38f15 | 17202 | addend -= sec->output_section->vma; |
5bd4f169 AM |
17203 | break; |
17204 | ||
25f23106 AM |
17205 | case R_PPC64_REL16: |
17206 | case R_PPC64_REL16_LO: | |
17207 | case R_PPC64_REL16_HI: | |
17208 | case R_PPC64_REL16_HA: | |
4a969973 AM |
17209 | case R_PPC64_REL16_HIGH: |
17210 | case R_PPC64_REL16_HIGHA: | |
17211 | case R_PPC64_REL16_HIGHER: | |
17212 | case R_PPC64_REL16_HIGHERA: | |
17213 | case R_PPC64_REL16_HIGHEST: | |
17214 | case R_PPC64_REL16_HIGHESTA: | |
5663e321 AM |
17215 | case R_PPC64_REL16_HIGHER34: |
17216 | case R_PPC64_REL16_HIGHERA34: | |
17217 | case R_PPC64_REL16_HIGHEST34: | |
17218 | case R_PPC64_REL16_HIGHESTA34: | |
a680de9a | 17219 | case R_PPC64_REL16DX_HA: |
721956f4 AM |
17220 | case R_PPC64_REL14: |
17221 | case R_PPC64_REL14_BRNTAKEN: | |
17222 | case R_PPC64_REL14_BRTAKEN: | |
5d1634d7 | 17223 | case R_PPC64_REL24: |
05d0e962 | 17224 | case R_PPC64_REL24_NOTOC: |
7aba54da | 17225 | case R_PPC64_REL24_P9NOTOC: |
5663e321 AM |
17226 | case R_PPC64_PCREL34: |
17227 | case R_PPC64_PCREL28: | |
5d1634d7 AM |
17228 | break; |
17229 | ||
411e1bfb AM |
17230 | case R_PPC64_TPREL16: |
17231 | case R_PPC64_TPREL16_LO: | |
17232 | case R_PPC64_TPREL16_HI: | |
17233 | case R_PPC64_TPREL16_HA: | |
17234 | case R_PPC64_TPREL16_DS: | |
17235 | case R_PPC64_TPREL16_LO_DS: | |
f9c6b907 AM |
17236 | case R_PPC64_TPREL16_HIGH: |
17237 | case R_PPC64_TPREL16_HIGHA: | |
411e1bfb AM |
17238 | case R_PPC64_TPREL16_HIGHER: |
17239 | case R_PPC64_TPREL16_HIGHERA: | |
17240 | case R_PPC64_TPREL16_HIGHEST: | |
17241 | case R_PPC64_TPREL16_HIGHESTA: | |
766bc656 AM |
17242 | if (h != NULL |
17243 | && h->elf.root.type == bfd_link_hash_undefweak | |
733ae98c AM |
17244 | && h->elf.dynindx == -1 |
17245 | && offset_in_range (input_section, rel->r_offset - d_offset, 4)) | |
766bc656 AM |
17246 | { |
17247 | /* Make this relocation against an undefined weak symbol | |
17248 | resolve to zero. This is really just a tweak, since | |
17249 | code using weak externs ought to check that they are | |
17250 | defined before using them. */ | |
17251 | bfd_byte *p = contents + rel->r_offset - d_offset; | |
17252 | ||
95f0d0d2 | 17253 | insn = bfd_get_32 (input_bfd, p); |
766bc656 AM |
17254 | insn = _bfd_elf_ppc_at_tprel_transform (insn, 13); |
17255 | if (insn != 0) | |
95f0d0d2 | 17256 | bfd_put_32 (input_bfd, insn, p); |
766bc656 AM |
17257 | break; |
17258 | } | |
beaddc1a AM |
17259 | /* Fall through. */ |
17260 | ||
17261 | case R_PPC64_TPREL34: | |
989f9879 AM |
17262 | if (htab->elf.tls_sec != NULL) |
17263 | addend -= htab->elf.tls_sec->vma + TP_OFFSET; | |
7c8bbca5 AM |
17264 | /* The TPREL16 relocs shouldn't really be used in shared |
17265 | libs or with non-local symbols as that will result in | |
17266 | DT_TEXTREL being set, but support them anyway. */ | |
17267 | goto dodyn; | |
411e1bfb AM |
17268 | |
17269 | case R_PPC64_DTPREL16: | |
17270 | case R_PPC64_DTPREL16_LO: | |
17271 | case R_PPC64_DTPREL16_HI: | |
17272 | case R_PPC64_DTPREL16_HA: | |
17273 | case R_PPC64_DTPREL16_DS: | |
17274 | case R_PPC64_DTPREL16_LO_DS: | |
f9c6b907 AM |
17275 | case R_PPC64_DTPREL16_HIGH: |
17276 | case R_PPC64_DTPREL16_HIGHA: | |
411e1bfb AM |
17277 | case R_PPC64_DTPREL16_HIGHER: |
17278 | case R_PPC64_DTPREL16_HIGHERA: | |
17279 | case R_PPC64_DTPREL16_HIGHEST: | |
17280 | case R_PPC64_DTPREL16_HIGHESTA: | |
c213164a | 17281 | case R_PPC64_DTPREL34: |
989f9879 AM |
17282 | if (htab->elf.tls_sec != NULL) |
17283 | addend -= htab->elf.tls_sec->vma + DTP_OFFSET; | |
411e1bfb AM |
17284 | break; |
17285 | ||
45965137 AM |
17286 | case R_PPC64_ADDR64_LOCAL: |
17287 | addend += PPC64_LOCAL_ENTRY_OFFSET (h != NULL | |
17288 | ? h->elf.other | |
17289 | : sym->st_other); | |
17290 | break; | |
17291 | ||
e515b051 AM |
17292 | case R_PPC64_DTPMOD64: |
17293 | relocation = 1; | |
17294 | addend = 0; | |
17295 | goto dodyn; | |
17296 | ||
411e1bfb | 17297 | case R_PPC64_TPREL64: |
989f9879 AM |
17298 | if (htab->elf.tls_sec != NULL) |
17299 | addend -= htab->elf.tls_sec->vma + TP_OFFSET; | |
411e1bfb AM |
17300 | goto dodyn; |
17301 | ||
17302 | case R_PPC64_DTPREL64: | |
989f9879 AM |
17303 | if (htab->elf.tls_sec != NULL) |
17304 | addend -= htab->elf.tls_sec->vma + DTP_OFFSET; | |
1a0670f3 | 17305 | /* Fall through. */ |
411e1bfb | 17306 | |
65f38f15 AM |
17307 | /* Relocations that may need to be propagated if this is a |
17308 | dynamic object. */ | |
04c9666a | 17309 | case R_PPC64_REL30: |
65f38f15 AM |
17310 | case R_PPC64_REL32: |
17311 | case R_PPC64_REL64: | |
17312 | case R_PPC64_ADDR14: | |
17313 | case R_PPC64_ADDR14_BRNTAKEN: | |
17314 | case R_PPC64_ADDR14_BRTAKEN: | |
17315 | case R_PPC64_ADDR16: | |
17316 | case R_PPC64_ADDR16_DS: | |
17317 | case R_PPC64_ADDR16_HA: | |
17318 | case R_PPC64_ADDR16_HI: | |
f9c6b907 AM |
17319 | case R_PPC64_ADDR16_HIGH: |
17320 | case R_PPC64_ADDR16_HIGHA: | |
65f38f15 AM |
17321 | case R_PPC64_ADDR16_HIGHER: |
17322 | case R_PPC64_ADDR16_HIGHERA: | |
17323 | case R_PPC64_ADDR16_HIGHEST: | |
17324 | case R_PPC64_ADDR16_HIGHESTA: | |
17325 | case R_PPC64_ADDR16_LO: | |
17326 | case R_PPC64_ADDR16_LO_DS: | |
5663e321 AM |
17327 | case R_PPC64_ADDR16_HIGHER34: |
17328 | case R_PPC64_ADDR16_HIGHERA34: | |
17329 | case R_PPC64_ADDR16_HIGHEST34: | |
17330 | case R_PPC64_ADDR16_HIGHESTA34: | |
65f38f15 | 17331 | case R_PPC64_ADDR24: |
65f38f15 AM |
17332 | case R_PPC64_ADDR32: |
17333 | case R_PPC64_ADDR64: | |
17334 | case R_PPC64_UADDR16: | |
17335 | case R_PPC64_UADDR32: | |
17336 | case R_PPC64_UADDR64: | |
5663e321 AM |
17337 | case R_PPC64_D34: |
17338 | case R_PPC64_D34_LO: | |
17339 | case R_PPC64_D34_HI30: | |
17340 | case R_PPC64_D34_HA30: | |
17341 | case R_PPC64_D28: | |
411e1bfb | 17342 | dodyn: |
5d1634d7 | 17343 | if ((input_section->flags & SEC_ALLOC) == 0) |
ec338859 AM |
17344 | break; |
17345 | ||
41bd81ab AM |
17346 | if (NO_OPD_RELOCS && is_opd) |
17347 | break; | |
17348 | ||
8a9e8e72 | 17349 | if (bfd_link_pic (info) |
b1b07054 | 17350 | ? ((h == NULL |
190eb1dd | 17351 | || h->elf.dyn_relocs != NULL) |
b1b07054 AM |
17352 | && ((h != NULL && pc_dynrelocs (h)) |
17353 | || must_be_dyn_reloc (info, r_type))) | |
8a9e8e72 | 17354 | : (h != NULL |
190eb1dd | 17355 | ? h->elf.dyn_relocs != NULL |
d311bc8b | 17356 | : ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC)) |
65f38f15 | 17357 | { |
0a1b45a2 | 17358 | bool skip, relocate; |
65f38f15 | 17359 | asection *sreloc; |
1cf1f670 | 17360 | bfd_vma out_off; |
82e66161 | 17361 | long indx = 0; |
65f38f15 AM |
17362 | |
17363 | /* When generating a dynamic object, these relocations | |
17364 | are copied into the output file to be resolved at run | |
17365 | time. */ | |
17366 | ||
0a1b45a2 AM |
17367 | skip = false; |
17368 | relocate = false; | |
65f38f15 | 17369 | |
1cf1f670 AM |
17370 | out_off = _bfd_elf_section_offset (output_bfd, info, |
17371 | input_section, rel->r_offset); | |
17372 | if (out_off == (bfd_vma) -1) | |
0a1b45a2 | 17373 | skip = true; |
1cf1f670 | 17374 | else if (out_off == (bfd_vma) -2) |
0a1b45a2 | 17375 | skip = true, relocate = true; |
1cf1f670 AM |
17376 | out_off += (input_section->output_section->vma |
17377 | + input_section->output_offset); | |
17378 | outrel.r_offset = out_off; | |
411e1bfb | 17379 | outrel.r_addend = rel->r_addend; |
65f38f15 | 17380 | |
1cf1f670 AM |
17381 | /* Optimize unaligned reloc use. */ |
17382 | if ((r_type == R_PPC64_ADDR64 && (out_off & 7) != 0) | |
17383 | || (r_type == R_PPC64_UADDR64 && (out_off & 7) == 0)) | |
17384 | r_type ^= R_PPC64_ADDR64 ^ R_PPC64_UADDR64; | |
17385 | else if ((r_type == R_PPC64_ADDR32 && (out_off & 3) != 0) | |
17386 | || (r_type == R_PPC64_UADDR32 && (out_off & 3) == 0)) | |
17387 | r_type ^= R_PPC64_ADDR32 ^ R_PPC64_UADDR32; | |
17388 | else if ((r_type == R_PPC64_ADDR16 && (out_off & 1) != 0) | |
17389 | || (r_type == R_PPC64_UADDR16 && (out_off & 1) == 0)) | |
17390 | r_type ^= R_PPC64_ADDR16 ^ R_PPC64_UADDR16; | |
17391 | ||
65f38f15 | 17392 | if (skip) |
0bb2d96a | 17393 | memset (&outrel, 0, sizeof outrel); |
9e51d549 AM |
17394 | else if (h != NULL |
17395 | && !SYMBOL_REFERENCES_LOCAL (info, &h->elf) | |
0b13192e AM |
17396 | && !is_opd |
17397 | && r_type != R_PPC64_TOC) | |
14acf4dc | 17398 | { |
82e66161 AM |
17399 | indx = h->elf.dynindx; |
17400 | BFD_ASSERT (indx != -1); | |
17401 | outrel.r_info = ELF64_R_INFO (indx, r_type); | |
14acf4dc | 17402 | } |
65f38f15 AM |
17403 | else |
17404 | { | |
41bd81ab AM |
17405 | /* This symbol is local, or marked to become local, |
17406 | or this is an opd section reloc which must point | |
17407 | at a local function. */ | |
65f38f15 | 17408 | outrel.r_addend += relocation; |
e86ce104 | 17409 | if (r_type == R_PPC64_ADDR64 || r_type == R_PPC64_TOC) |
65f38f15 | 17410 | { |
3fad3c7c | 17411 | if (is_opd && h != NULL) |
afbe61cf AM |
17412 | { |
17413 | /* Lie about opd entries. This case occurs | |
17414 | when building shared libraries and we | |
17415 | reference a function in another shared | |
3fad3c7c AM |
17416 | lib. The same thing happens for a weak |
17417 | definition in an application that's | |
17418 | overridden by a strong definition in a | |
17419 | shared lib. (I believe this is a generic | |
17420 | bug in binutils handling of weak syms.) | |
17421 | In these cases we won't use the opd | |
1e2f5b6e | 17422 | entry in this lib. */ |
0a1b45a2 | 17423 | unresolved_reloc = false; |
afbe61cf | 17424 | } |
25f23106 AM |
17425 | if (!is_opd |
17426 | && r_type == R_PPC64_ADDR64 | |
17427 | && (h != NULL | |
17428 | ? h->elf.type == STT_GNU_IFUNC | |
17429 | : ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC)) | |
17430 | outrel.r_info = ELF64_R_INFO (0, R_PPC64_IRELATIVE); | |
17431 | else | |
17432 | { | |
17433 | outrel.r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE); | |
81407a69 | 17434 | |
25f23106 AM |
17435 | /* We need to relocate .opd contents for ld.so. |
17436 | Prelink also wants simple and consistent rules | |
17437 | for relocs. This make all RELATIVE relocs have | |
17438 | *r_offset equal to r_addend. */ | |
0a1b45a2 | 17439 | relocate = true; |
25f23106 | 17440 | } |
65f38f15 AM |
17441 | } |
17442 | else | |
17443 | { | |
25f23106 AM |
17444 | if (h != NULL |
17445 | ? h->elf.type == STT_GNU_IFUNC | |
17446 | : ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC) | |
17447 | { | |
25f53a85 | 17448 | info->callbacks->einfo |
695344c0 | 17449 | /* xgettext:c-format */ |
174d0a74 | 17450 | (_("%H: %s for indirect " |
c1c8c1ef | 17451 | "function `%pT' unsupported\n"), |
25f53a85 | 17452 | input_bfd, input_section, rel->r_offset, |
25f23106 AM |
17453 | ppc64_elf_howto_table[r_type]->name, |
17454 | sym_name); | |
0a1b45a2 | 17455 | ret = false; |
25f23106 | 17456 | } |
cf35638d | 17457 | else if (r_symndx == STN_UNDEF || bfd_is_abs_section (sec)) |
65f38f15 AM |
17458 | ; |
17459 | else if (sec == NULL || sec->owner == NULL) | |
17460 | { | |
17461 | bfd_set_error (bfd_error_bad_value); | |
0a1b45a2 | 17462 | return false; |
65f38f15 AM |
17463 | } |
17464 | else | |
17465 | { | |
f26a3287 | 17466 | asection *osec = sec->output_section; |
65f38f15 | 17467 | |
f26a3287 AM |
17468 | if ((osec->flags & SEC_THREAD_LOCAL) != 0) |
17469 | { | |
17470 | /* TLS symbol values are relative to the | |
17471 | TLS segment. Dynamic relocations for | |
17472 | local TLS symbols therefore can't be | |
17473 | reduced to a relocation against their | |
17474 | section symbol because it holds the | |
17475 | address of the section, not a value | |
17476 | relative to the TLS segment. We could | |
17477 | change the .tdata dynamic section symbol | |
17478 | to be zero value but STN_UNDEF works | |
17479 | and is used elsewhere, eg. for TPREL64 | |
17480 | GOT relocs against local TLS symbols. */ | |
17481 | osec = htab->elf.tls_sec; | |
17482 | indx = 0; | |
17483 | } | |
17484 | else | |
74541ad4 | 17485 | { |
74541ad4 | 17486 | indx = elf_section_data (osec)->dynindx; |
f26a3287 AM |
17487 | if (indx == 0) |
17488 | { | |
17489 | if ((osec->flags & SEC_READONLY) == 0 | |
17490 | && htab->elf.data_index_section != NULL) | |
17491 | osec = htab->elf.data_index_section; | |
17492 | else | |
17493 | osec = htab->elf.text_index_section; | |
17494 | indx = elf_section_data (osec)->dynindx; | |
17495 | } | |
17496 | BFD_ASSERT (indx != 0); | |
74541ad4 | 17497 | } |
74541ad4 | 17498 | |
65f38f15 AM |
17499 | /* We are turning this relocation into one |
17500 | against a section symbol, so subtract out | |
17501 | the output section's address but not the | |
17502 | offset of the input section in the output | |
17503 | section. */ | |
17504 | outrel.r_addend -= osec->vma; | |
17505 | } | |
17506 | ||
17507 | outrel.r_info = ELF64_R_INFO (indx, r_type); | |
17508 | } | |
17509 | } | |
17510 | ||
1657026c AM |
17511 | if (!(info->enable_dt_relr |
17512 | && ELF64_R_TYPE (outrel.r_info) == R_PPC64_RELATIVE | |
17513 | && rel->r_offset % 2 == 0 | |
17514 | && input_section->alignment_power != 0 | |
17515 | && ELF64_R_TYPE (orig_rel.r_info) != R_PPC64_UADDR64)) | |
82e66161 | 17516 | { |
1657026c AM |
17517 | sreloc = elf_section_data (input_section)->sreloc; |
17518 | if (h != NULL | |
17519 | ? h->elf.type == STT_GNU_IFUNC | |
17520 | : ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC) | |
17521 | { | |
17522 | sreloc = htab->elf.irelplt; | |
17523 | if (indx == 0 || is_static_defined (&h->elf)) | |
17524 | htab->elf.ifunc_resolvers = true; | |
17525 | } | |
17526 | if (sreloc == NULL) | |
17527 | abort (); | |
17528 | ||
17529 | if (sreloc->reloc_count * sizeof (Elf64_External_Rela) | |
17530 | >= sreloc->size) | |
17531 | abort (); | |
17532 | loc = sreloc->contents; | |
17533 | loc += sreloc->reloc_count++ * sizeof (Elf64_External_Rela); | |
17534 | bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc); | |
82e66161 | 17535 | } |
65f38f15 | 17536 | |
e59a1001 AM |
17537 | if (!warned_dynamic |
17538 | && !ppc64_glibc_dynamic_reloc (ELF64_R_TYPE (outrel.r_info))) | |
17539 | { | |
17540 | info->callbacks->einfo | |
17541 | /* xgettext:c-format */ | |
17542 | (_("%X%P: %pB: %s against %pT " | |
17543 | "is not supported by glibc as a dynamic relocation\n"), | |
17544 | input_bfd, | |
17545 | ppc64_elf_howto_table[ELF64_R_TYPE (outrel.r_info)]->name, | |
17546 | sym_name); | |
0a1b45a2 | 17547 | warned_dynamic = true; |
e59a1001 AM |
17548 | } |
17549 | ||
65f38f15 AM |
17550 | /* If this reloc is against an external symbol, it will |
17551 | be computed at runtime, so there's no need to do | |
81407a69 AM |
17552 | anything now. However, for the sake of prelink ensure |
17553 | that the section contents are a known value. */ | |
2cdcc330 | 17554 | if (!relocate) |
81407a69 | 17555 | { |
0a1b45a2 | 17556 | unresolved_reloc = false; |
81407a69 AM |
17557 | /* The value chosen here is quite arbitrary as ld.so |
17558 | ignores section contents except for the special | |
17559 | case of .opd where the contents might be accessed | |
17560 | before relocation. Choose zero, as that won't | |
17561 | cause reloc overflow. */ | |
17562 | relocation = 0; | |
17563 | addend = 0; | |
17564 | /* Use *r_offset == r_addend for R_PPC64_ADDR64 relocs | |
17565 | to improve backward compatibility with older | |
17566 | versions of ld. */ | |
17567 | if (r_type == R_PPC64_ADDR64) | |
17568 | addend = outrel.r_addend; | |
17569 | /* Adjust pc_relative relocs to have zero in *r_offset. */ | |
4ce794b7 | 17570 | else if (ppc64_elf_howto_table[r_type]->pc_relative) |
f0158f44 | 17571 | addend = outrel.r_offset; |
81407a69 | 17572 | } |
65f38f15 | 17573 | } |
5bd4f169 AM |
17574 | break; |
17575 | ||
65f38f15 AM |
17576 | case R_PPC64_COPY: |
17577 | case R_PPC64_GLOB_DAT: | |
17578 | case R_PPC64_JMP_SLOT: | |
25f23106 | 17579 | case R_PPC64_JMP_IREL: |
65f38f15 AM |
17580 | case R_PPC64_RELATIVE: |
17581 | /* We shouldn't ever see these dynamic relocs in relocatable | |
17582 | files. */ | |
ae9a127f | 17583 | /* Fall through. */ |
65f38f15 AM |
17584 | |
17585 | case R_PPC64_PLTGOT16: | |
17586 | case R_PPC64_PLTGOT16_DS: | |
17587 | case R_PPC64_PLTGOT16_HA: | |
17588 | case R_PPC64_PLTGOT16_HI: | |
17589 | case R_PPC64_PLTGOT16_LO: | |
17590 | case R_PPC64_PLTGOT16_LO_DS: | |
17591 | case R_PPC64_PLTREL32: | |
17592 | case R_PPC64_PLTREL64: | |
17593 | /* These ones haven't been implemented yet. */ | |
17594 | ||
25f53a85 | 17595 | info->callbacks->einfo |
695344c0 | 17596 | /* xgettext:c-format */ |
c1c8c1ef | 17597 | (_("%P: %pB: %s is not supported for `%pT'\n"), |
d003868e | 17598 | input_bfd, |
4ce794b7 | 17599 | ppc64_elf_howto_table[r_type]->name, sym_name); |
5bd4f169 AM |
17600 | |
17601 | bfd_set_error (bfd_error_invalid_operation); | |
0a1b45a2 | 17602 | ret = false; |
c316a17c | 17603 | goto copy_reloc; |
65f38f15 | 17604 | } |
5bd4f169 | 17605 | |
67f0cbdb AM |
17606 | /* Multi-instruction sequences that access the TOC can be |
17607 | optimized, eg. addis ra,r2,0; addi rb,ra,x; | |
07d6d2b8 | 17608 | to nop; addi rb,r2,x; */ |
67f0cbdb AM |
17609 | switch (r_type) |
17610 | { | |
17611 | default: | |
17612 | break; | |
17613 | ||
17614 | case R_PPC64_GOT_TLSLD16_HI: | |
17615 | case R_PPC64_GOT_TLSGD16_HI: | |
17616 | case R_PPC64_GOT_TPREL16_HI: | |
17617 | case R_PPC64_GOT_DTPREL16_HI: | |
17618 | case R_PPC64_GOT16_HI: | |
17619 | case R_PPC64_TOC16_HI: | |
17620 | /* These relocs would only be useful if building up an | |
17621 | offset to later add to r2, perhaps in an indexed | |
17622 | addressing mode instruction. Don't try to optimize. | |
17623 | Unfortunately, the possibility of someone building up an | |
17624 | offset like this or even with the HA relocs, means that | |
17625 | we need to check the high insn when optimizing the low | |
17626 | insn. */ | |
17627 | break; | |
17628 | ||
5663e321 AM |
17629 | case R_PPC64_PLTCALL_NOTOC: |
17630 | if (!unresolved_reloc) | |
17631 | htab->notoc_plt = 1; | |
17632 | /* Fall through. */ | |
23cedd1d | 17633 | case R_PPC64_PLTCALL: |
733ae98c AM |
17634 | if (unresolved_reloc |
17635 | && offset_in_range (input_section, rel->r_offset, | |
17636 | r_type == R_PPC64_PLTCALL ? 8 : 4)) | |
23cedd1d AM |
17637 | { |
17638 | /* No plt entry. Make this into a direct call. */ | |
17639 | bfd_byte *p = contents + rel->r_offset; | |
17640 | insn = bfd_get_32 (input_bfd, p); | |
17641 | insn &= 1; | |
17642 | bfd_put_32 (input_bfd, B_DOT | insn, p); | |
5663e321 AM |
17643 | if (r_type == R_PPC64_PLTCALL) |
17644 | bfd_put_32 (input_bfd, NOP, p + 4); | |
23cedd1d AM |
17645 | unresolved_reloc = save_unresolved_reloc; |
17646 | r_type = R_PPC64_REL24; | |
17647 | } | |
17648 | break; | |
17649 | ||
5663e321 | 17650 | case R_PPC64_PLTSEQ_NOTOC: |
23cedd1d AM |
17651 | case R_PPC64_PLTSEQ: |
17652 | if (unresolved_reloc) | |
17653 | { | |
0a1b45a2 | 17654 | unresolved_reloc = false; |
23cedd1d AM |
17655 | goto nop_it; |
17656 | } | |
17657 | break; | |
17658 | ||
5663e321 AM |
17659 | case R_PPC64_PLT_PCREL34_NOTOC: |
17660 | if (!unresolved_reloc) | |
17661 | htab->notoc_plt = 1; | |
17662 | /* Fall through. */ | |
17663 | case R_PPC64_PLT_PCREL34: | |
733ae98c AM |
17664 | if (unresolved_reloc |
17665 | && offset_in_range (input_section, rel->r_offset, 8)) | |
5663e321 AM |
17666 | { |
17667 | bfd_byte *p = contents + rel->r_offset; | |
17668 | bfd_put_32 (input_bfd, PNOP >> 32, p); | |
17669 | bfd_put_32 (input_bfd, PNOP, p + 4); | |
0a1b45a2 | 17670 | unresolved_reloc = false; |
5663e321 AM |
17671 | goto copy_reloc; |
17672 | } | |
17673 | break; | |
17674 | ||
23cedd1d AM |
17675 | case R_PPC64_PLT16_HA: |
17676 | if (unresolved_reloc) | |
17677 | { | |
0a1b45a2 | 17678 | unresolved_reloc = false; |
23cedd1d AM |
17679 | goto nop_it; |
17680 | } | |
17681 | /* Fall through. */ | |
67f0cbdb AM |
17682 | case R_PPC64_GOT_TLSLD16_HA: |
17683 | case R_PPC64_GOT_TLSGD16_HA: | |
17684 | case R_PPC64_GOT_TPREL16_HA: | |
17685 | case R_PPC64_GOT_DTPREL16_HA: | |
17686 | case R_PPC64_GOT16_HA: | |
17687 | case R_PPC64_TOC16_HA: | |
98528052 | 17688 | if (htab->do_toc_opt && relocation + addend + 0x8000 < 0x10000 |
3a3a4c1f AM |
17689 | && !ppc64_elf_tdata (input_bfd)->unexpected_toc_insn |
17690 | && !(bfd_link_pic (info) | |
17691 | && (h != NULL | |
17692 | ? bfd_is_abs_symbol (&h->elf.root) | |
17693 | : sec == bfd_abs_section_ptr))) | |
98528052 | 17694 | { |
23cedd1d AM |
17695 | bfd_byte *p; |
17696 | nop_it: | |
733ae98c AM |
17697 | if (offset_in_range (input_section, rel->r_offset & ~3, 4)) |
17698 | { | |
17699 | p = contents + (rel->r_offset & ~3); | |
17700 | bfd_put_32 (input_bfd, NOP, p); | |
17701 | goto copy_reloc; | |
17702 | } | |
98528052 | 17703 | } |
67f0cbdb AM |
17704 | break; |
17705 | ||
23cedd1d AM |
17706 | case R_PPC64_PLT16_LO: |
17707 | case R_PPC64_PLT16_LO_DS: | |
17708 | if (unresolved_reloc) | |
17709 | { | |
0a1b45a2 | 17710 | unresolved_reloc = false; |
23cedd1d AM |
17711 | goto nop_it; |
17712 | } | |
17713 | /* Fall through. */ | |
67f0cbdb AM |
17714 | case R_PPC64_GOT_TLSLD16_LO: |
17715 | case R_PPC64_GOT_TLSGD16_LO: | |
17716 | case R_PPC64_GOT_TPREL16_LO_DS: | |
17717 | case R_PPC64_GOT_DTPREL16_LO_DS: | |
17718 | case R_PPC64_GOT16_LO: | |
17719 | case R_PPC64_GOT16_LO_DS: | |
17720 | case R_PPC64_TOC16_LO: | |
17721 | case R_PPC64_TOC16_LO_DS: | |
98528052 | 17722 | if (htab->do_toc_opt && relocation + addend + 0x8000 < 0x10000 |
733ae98c | 17723 | && !ppc64_elf_tdata (input_bfd)->unexpected_toc_insn |
3a3a4c1f AM |
17724 | && !(bfd_link_pic (info) |
17725 | && (h != NULL | |
17726 | ? bfd_is_abs_symbol (&h->elf.root) | |
17727 | : sec == bfd_abs_section_ptr)) | |
733ae98c | 17728 | && offset_in_range (input_section, rel->r_offset & ~3, 4)) |
67f0cbdb AM |
17729 | { |
17730 | bfd_byte *p = contents + (rel->r_offset & ~3); | |
17731 | insn = bfd_get_32 (input_bfd, p); | |
2365f8d7 | 17732 | if ((insn & (0x3fu << 26)) == 12u << 26 /* addic */) |
560c8763 AM |
17733 | { |
17734 | /* Transform addic to addi when we change reg. */ | |
2365f8d7 | 17735 | insn &= ~((0x3fu << 26) | (0x1f << 16)); |
560c8763 AM |
17736 | insn |= (14u << 26) | (2 << 16); |
17737 | } | |
17738 | else | |
67f0cbdb | 17739 | { |
98528052 AM |
17740 | insn &= ~(0x1f << 16); |
17741 | insn |= 2 << 16; | |
67f0cbdb | 17742 | } |
560c8763 | 17743 | bfd_put_32 (input_bfd, insn, p); |
67f0cbdb AM |
17744 | } |
17745 | break; | |
9a23f96e AM |
17746 | |
17747 | case R_PPC64_TPREL16_HA: | |
733ae98c AM |
17748 | if (htab->do_tls_opt |
17749 | && relocation + addend + 0x8000 < 0x10000 | |
17750 | && offset_in_range (input_section, rel->r_offset & ~3, 4)) | |
9a23f96e AM |
17751 | { |
17752 | bfd_byte *p = contents + (rel->r_offset & ~3); | |
252dcdf4 AM |
17753 | bfd_put_32 (input_bfd, NOP, p); |
17754 | goto copy_reloc; | |
9a23f96e AM |
17755 | } |
17756 | break; | |
17757 | ||
17758 | case R_PPC64_TPREL16_LO: | |
17759 | case R_PPC64_TPREL16_LO_DS: | |
733ae98c AM |
17760 | if (htab->do_tls_opt |
17761 | && relocation + addend + 0x8000 < 0x10000 | |
17762 | && offset_in_range (input_section, rel->r_offset & ~3, 4)) | |
9a23f96e AM |
17763 | { |
17764 | bfd_byte *p = contents + (rel->r_offset & ~3); | |
17765 | insn = bfd_get_32 (input_bfd, p); | |
17766 | insn &= ~(0x1f << 16); | |
17767 | insn |= 13 << 16; | |
17768 | bfd_put_32 (input_bfd, insn, p); | |
17769 | } | |
17770 | break; | |
67f0cbdb AM |
17771 | } |
17772 | ||
65f38f15 AM |
17773 | /* Do any further special processing. */ |
17774 | switch (r_type) | |
17775 | { | |
17776 | default: | |
17777 | break; | |
17778 | ||
25f23106 | 17779 | case R_PPC64_REL16_HA: |
4a969973 AM |
17780 | case R_PPC64_REL16_HIGHA: |
17781 | case R_PPC64_REL16_HIGHERA: | |
17782 | case R_PPC64_REL16_HIGHESTA: | |
a680de9a | 17783 | case R_PPC64_REL16DX_HA: |
f9c6b907 AM |
17784 | case R_PPC64_ADDR16_HA: |
17785 | case R_PPC64_ADDR16_HIGHA: | |
65f38f15 AM |
17786 | case R_PPC64_ADDR16_HIGHERA: |
17787 | case R_PPC64_ADDR16_HIGHESTA: | |
65f38f15 AM |
17788 | case R_PPC64_TOC16_HA: |
17789 | case R_PPC64_SECTOFF_HA: | |
411e1bfb | 17790 | case R_PPC64_TPREL16_HA: |
f9c6b907 | 17791 | case R_PPC64_TPREL16_HIGHA: |
411e1bfb | 17792 | case R_PPC64_TPREL16_HIGHERA: |
411e1bfb | 17793 | case R_PPC64_TPREL16_HIGHESTA: |
f9c6b907 AM |
17794 | case R_PPC64_DTPREL16_HA: |
17795 | case R_PPC64_DTPREL16_HIGHA: | |
411e1bfb | 17796 | case R_PPC64_DTPREL16_HIGHERA: |
411e1bfb | 17797 | case R_PPC64_DTPREL16_HIGHESTA: |
65f38f15 AM |
17798 | /* It's just possible that this symbol is a weak symbol |
17799 | that's not actually defined anywhere. In that case, | |
17800 | 'sec' would be NULL, and we should leave the symbol | |
17801 | alone (it will be set to zero elsewhere in the link). */ | |
5c5f6e17 AM |
17802 | if (sec == NULL) |
17803 | break; | |
1a0670f3 | 17804 | /* Fall through. */ |
5c5f6e17 AM |
17805 | |
17806 | case R_PPC64_GOT16_HA: | |
17807 | case R_PPC64_PLTGOT16_HA: | |
17808 | case R_PPC64_PLT16_HA: | |
17809 | case R_PPC64_GOT_TLSGD16_HA: | |
17810 | case R_PPC64_GOT_TLSLD16_HA: | |
17811 | case R_PPC64_GOT_TPREL16_HA: | |
17812 | case R_PPC64_GOT_DTPREL16_HA: | |
17813 | /* Add 0x10000 if sign bit in 0:15 is set. | |
17814 | Bits 0:15 are not used. */ | |
17815 | addend += 0x8000; | |
65f38f15 AM |
17816 | break; |
17817 | ||
5663e321 AM |
17818 | case R_PPC64_D34_HA30: |
17819 | case R_PPC64_ADDR16_HIGHERA34: | |
17820 | case R_PPC64_ADDR16_HIGHESTA34: | |
17821 | case R_PPC64_REL16_HIGHERA34: | |
17822 | case R_PPC64_REL16_HIGHESTA34: | |
17823 | if (sec != NULL) | |
17824 | addend += 1ULL << 33; | |
17825 | break; | |
17826 | ||
65f38f15 AM |
17827 | case R_PPC64_ADDR16_DS: |
17828 | case R_PPC64_ADDR16_LO_DS: | |
17829 | case R_PPC64_GOT16_DS: | |
17830 | case R_PPC64_GOT16_LO_DS: | |
17831 | case R_PPC64_PLT16_LO_DS: | |
17832 | case R_PPC64_SECTOFF_DS: | |
17833 | case R_PPC64_SECTOFF_LO_DS: | |
17834 | case R_PPC64_TOC16_DS: | |
17835 | case R_PPC64_TOC16_LO_DS: | |
17836 | case R_PPC64_PLTGOT16_DS: | |
17837 | case R_PPC64_PLTGOT16_LO_DS: | |
411e1bfb AM |
17838 | case R_PPC64_GOT_TPREL16_DS: |
17839 | case R_PPC64_GOT_TPREL16_LO_DS: | |
17840 | case R_PPC64_GOT_DTPREL16_DS: | |
17841 | case R_PPC64_GOT_DTPREL16_LO_DS: | |
17842 | case R_PPC64_TPREL16_DS: | |
17843 | case R_PPC64_TPREL16_LO_DS: | |
17844 | case R_PPC64_DTPREL16_DS: | |
17845 | case R_PPC64_DTPREL16_LO_DS: | |
733ae98c AM |
17846 | if (!offset_in_range (input_section, rel->r_offset & ~3, 4)) |
17847 | break; | |
adadcc0c AM |
17848 | insn = bfd_get_32 (input_bfd, contents + (rel->r_offset & ~3)); |
17849 | mask = 3; | |
a680de9a PB |
17850 | /* If this reloc is against an lq, lxv, or stxv insn, then |
17851 | the value must be a multiple of 16. This is somewhat of | |
17852 | a hack, but the "correct" way to do this by defining _DQ | |
17853 | forms of all the _DS relocs bloats all reloc switches in | |
17854 | this file. It doesn't make much sense to use these | |
17855 | relocs in data, so testing the insn should be safe. */ | |
2365f8d7 AM |
17856 | if ((insn & (0x3fu << 26)) == (56u << 26) |
17857 | || ((insn & (0x3fu << 26)) == (61u << 26) && (insn & 3) == 1)) | |
adadcc0c | 17858 | mask = 15; |
a680de9a PB |
17859 | relocation += addend; |
17860 | addend = insn & (mask ^ 3); | |
17861 | if ((relocation & mask) != 0) | |
65f38f15 | 17862 | { |
a680de9a | 17863 | relocation ^= relocation & mask; |
25f53a85 | 17864 | info->callbacks->einfo |
695344c0 | 17865 | /* xgettext:c-format */ |
174d0a74 | 17866 | (_("%H: error: %s not a multiple of %u\n"), |
25f53a85 | 17867 | input_bfd, input_section, rel->r_offset, |
d830549d | 17868 | ppc64_elf_howto_table[r_type]->name, |
adadcc0c | 17869 | mask + 1); |
65f38f15 | 17870 | bfd_set_error (bfd_error_bad_value); |
0a1b45a2 | 17871 | ret = false; |
c316a17c | 17872 | goto copy_reloc; |
65f38f15 AM |
17873 | } |
17874 | break; | |
5bd4f169 AM |
17875 | } |
17876 | ||
239e1f3a AM |
17877 | /* Dynamic relocs are not propagated for SEC_DEBUGGING sections |
17878 | because such sections are not SEC_ALLOC and thus ld.so will | |
17879 | not process them. */ | |
d830549d | 17880 | howto = ppc64_elf_howto_table[(int) r_type]; |
65f38f15 | 17881 | if (unresolved_reloc |
239e1f3a | 17882 | && !((input_section->flags & SEC_DEBUGGING) != 0 |
1d5316ab AM |
17883 | && h->elf.def_dynamic) |
17884 | && _bfd_elf_section_offset (output_bfd, info, input_section, | |
17885 | rel->r_offset) != (bfd_vma) -1) | |
9c07fe7c | 17886 | { |
25f53a85 | 17887 | info->callbacks->einfo |
695344c0 | 17888 | /* xgettext:c-format */ |
c1c8c1ef | 17889 | (_("%H: unresolvable %s against `%pT'\n"), |
25f53a85 | 17890 | input_bfd, input_section, rel->r_offset, |
b80eed39 | 17891 | howto->name, |
039b3fef | 17892 | h->elf.root.root.string); |
0a1b45a2 | 17893 | ret = false; |
9c07fe7c | 17894 | } |
5bd4f169 | 17895 | |
b80eed39 AM |
17896 | /* 16-bit fields in insns mostly have signed values, but a |
17897 | few insns have 16-bit unsigned values. Really, we should | |
17898 | have different reloc types. */ | |
17899 | if (howto->complain_on_overflow != complain_overflow_dont | |
17900 | && howto->dst_mask == 0xffff | |
733ae98c AM |
17901 | && (input_section->flags & SEC_CODE) != 0 |
17902 | && offset_in_range (input_section, rel->r_offset & ~3, 4)) | |
b80eed39 AM |
17903 | { |
17904 | enum complain_overflow complain = complain_overflow_signed; | |
17905 | ||
17906 | insn = bfd_get_32 (input_bfd, contents + (rel->r_offset & ~3)); | |
2365f8d7 | 17907 | if ((insn & (0x3fu << 26)) == 10u << 26 /* cmpli */) |
a47622ac AM |
17908 | complain = complain_overflow_bitfield; |
17909 | else if (howto->rightshift == 0 | |
2365f8d7 AM |
17910 | ? ((insn & (0x3fu << 26)) == 28u << 26 /* andi */ |
17911 | || (insn & (0x3fu << 26)) == 24u << 26 /* ori */ | |
17912 | || (insn & (0x3fu << 26)) == 26u << 26 /* xori */) | |
17913 | : ((insn & (0x3fu << 26)) == 29u << 26 /* andis */ | |
17914 | || (insn & (0x3fu << 26)) == 25u << 26 /* oris */ | |
17915 | || (insn & (0x3fu << 26)) == 27u << 26 /* xoris */)) | |
b80eed39 AM |
17916 | complain = complain_overflow_unsigned; |
17917 | if (howto->complain_on_overflow != complain) | |
17918 | { | |
17919 | alt_howto = *howto; | |
17920 | alt_howto.complain_on_overflow = complain; | |
17921 | howto = &alt_howto; | |
17922 | } | |
17923 | } | |
17924 | ||
5663e321 | 17925 | switch (r_type) |
a680de9a | 17926 | { |
5663e321 AM |
17927 | /* Split field relocs aren't handled by _bfd_final_link_relocate. */ |
17928 | case R_PPC64_D34: | |
17929 | case R_PPC64_D34_LO: | |
17930 | case R_PPC64_D34_HI30: | |
17931 | case R_PPC64_D34_HA30: | |
17932 | case R_PPC64_PCREL34: | |
17933 | case R_PPC64_GOT_PCREL34: | |
c213164a AM |
17934 | case R_PPC64_TPREL34: |
17935 | case R_PPC64_DTPREL34: | |
87c69f97 AM |
17936 | case R_PPC64_GOT_TLSGD_PCREL34: |
17937 | case R_PPC64_GOT_TLSLD_PCREL34: | |
17938 | case R_PPC64_GOT_TPREL_PCREL34: | |
17939 | case R_PPC64_GOT_DTPREL_PCREL34: | |
5663e321 AM |
17940 | case R_PPC64_PLT_PCREL34: |
17941 | case R_PPC64_PLT_PCREL34_NOTOC: | |
17942 | case R_PPC64_D28: | |
17943 | case R_PPC64_PCREL28: | |
733ae98c | 17944 | if (!offset_in_range (input_section, rel->r_offset, 8)) |
5663e321 AM |
17945 | r = bfd_reloc_outofrange; |
17946 | else | |
17947 | { | |
5663e321 AM |
17948 | relocation += addend; |
17949 | if (howto->pc_relative) | |
17950 | relocation -= (rel->r_offset | |
17951 | + input_section->output_offset | |
17952 | + input_section->output_section->vma); | |
17953 | relocation >>= howto->rightshift; | |
17954 | ||
17955 | pinsn = bfd_get_32 (input_bfd, contents + rel->r_offset); | |
17956 | pinsn <<= 32; | |
17957 | pinsn |= bfd_get_32 (input_bfd, contents + rel->r_offset + 4); | |
17958 | ||
17959 | pinsn &= ~howto->dst_mask; | |
17960 | pinsn |= (((relocation << 16) | (relocation & 0xffff)) | |
17961 | & howto->dst_mask); | |
17962 | bfd_put_32 (input_bfd, pinsn >> 32, contents + rel->r_offset); | |
17963 | bfd_put_32 (input_bfd, pinsn, contents + rel->r_offset + 4); | |
17964 | r = bfd_reloc_ok; | |
17965 | if (howto->complain_on_overflow == complain_overflow_signed | |
17966 | && (relocation + (1ULL << (howto->bitsize - 1)) | |
17967 | >= 1ULL << howto->bitsize)) | |
17968 | r = bfd_reloc_overflow; | |
17969 | } | |
17970 | break; | |
17971 | ||
17972 | case R_PPC64_REL16DX_HA: | |
733ae98c | 17973 | if (!offset_in_range (input_section, rel->r_offset, 4)) |
a680de9a PB |
17974 | r = bfd_reloc_outofrange; |
17975 | else | |
17976 | { | |
17977 | relocation += addend; | |
17978 | relocation -= (rel->r_offset | |
17979 | + input_section->output_offset | |
17980 | + input_section->output_section->vma); | |
3de43e7b | 17981 | relocation = (bfd_signed_vma) relocation >> 16; |
a680de9a PB |
17982 | insn = bfd_get_32 (input_bfd, contents + rel->r_offset); |
17983 | insn &= ~0x1fffc1; | |
3de43e7b | 17984 | insn |= (relocation & 0xffc1) | ((relocation & 0x3e) << 15); |
a680de9a PB |
17985 | bfd_put_32 (input_bfd, insn, contents + rel->r_offset); |
17986 | r = bfd_reloc_ok; | |
3de43e7b | 17987 | if (relocation + 0x8000 > 0xffff) |
a680de9a PB |
17988 | r = bfd_reloc_overflow; |
17989 | } | |
5663e321 AM |
17990 | break; |
17991 | ||
17992 | default: | |
17993 | r = _bfd_final_link_relocate (howto, input_bfd, input_section, | |
17994 | contents, rel->r_offset, | |
17995 | relocation, addend); | |
a680de9a | 17996 | } |
5bd4f169 | 17997 | |
ef60b7ff | 17998 | if (r != bfd_reloc_ok) |
5bd4f169 | 17999 | { |
bc30df16 | 18000 | char *more_info = NULL; |
b80eed39 | 18001 | const char *reloc_name = howto->name; |
bc30df16 AM |
18002 | |
18003 | if (reloc_dest != DEST_NORMAL) | |
18004 | { | |
18005 | more_info = bfd_malloc (strlen (reloc_name) + 8); | |
18006 | if (more_info != NULL) | |
18007 | { | |
18008 | strcpy (more_info, reloc_name); | |
18009 | strcat (more_info, (reloc_dest == DEST_OPD | |
18010 | ? " (OPD)" : " (stub)")); | |
18011 | reloc_name = more_info; | |
18012 | } | |
18013 | } | |
18014 | ||
cd27b276 | 18015 | if (r == bfd_reloc_overflow) |
5bd4f169 | 18016 | { |
8131c122 AM |
18017 | /* On code like "if (foo) foo();" don't report overflow |
18018 | on a branch to zero when foo is undefined. */ | |
18019 | if (!warned | |
18020 | && (reloc_dest == DEST_STUB | |
18021 | || !(h != NULL | |
18022 | && (h->elf.root.type == bfd_link_hash_undefweak | |
18023 | || h->elf.root.type == bfd_link_hash_undefined) | |
18024 | && is_branch_reloc (r_type)))) | |
9e51d549 AM |
18025 | info->callbacks->reloc_overflow |
18026 | (info, (struct bfd_link_hash_entry *) h, sym_name, | |
18027 | reloc_name, orig_rel.r_addend, input_bfd, input_section, | |
18028 | rel->r_offset); | |
ef60b7ff AM |
18029 | } |
18030 | else | |
18031 | { | |
25f53a85 | 18032 | info->callbacks->einfo |
695344c0 | 18033 | /* xgettext:c-format */ |
c1c8c1ef | 18034 | (_("%H: %s against `%pT': error %d\n"), |
25f53a85 | 18035 | input_bfd, input_section, rel->r_offset, |
bc30df16 | 18036 | reloc_name, sym_name, (int) r); |
0a1b45a2 | 18037 | ret = false; |
ef60b7ff | 18038 | } |
c9594989 | 18039 | free (more_info); |
5bd4f169 | 18040 | } |
c316a17c AM |
18041 | copy_reloc: |
18042 | if (wrel != rel) | |
18043 | *wrel = *rel; | |
18044 | } | |
18045 | ||
18046 | if (wrel != rel) | |
18047 | { | |
18048 | Elf_Internal_Shdr *rel_hdr; | |
18049 | size_t deleted = rel - wrel; | |
18050 | ||
18051 | rel_hdr = _bfd_elf_single_rel_hdr (input_section->output_section); | |
18052 | rel_hdr->sh_size -= rel_hdr->sh_entsize * deleted; | |
18053 | if (rel_hdr->sh_size == 0) | |
18054 | { | |
18055 | /* It is too late to remove an empty reloc section. Leave | |
18056 | one NONE reloc. | |
18057 | ??? What is wrong with an empty section??? */ | |
18058 | rel_hdr->sh_size = rel_hdr->sh_entsize; | |
18059 | deleted -= 1; | |
18060 | } | |
18061 | rel_hdr = _bfd_elf_single_rel_hdr (input_section); | |
18062 | rel_hdr->sh_size -= rel_hdr->sh_entsize * deleted; | |
18063 | input_section->reloc_count -= deleted; | |
5bd4f169 AM |
18064 | } |
18065 | ||
645ea6a9 AM |
18066 | /* If we're emitting relocations, then shortly after this function |
18067 | returns, reloc offsets and addends for this section will be | |
18068 | adjusted. Worse, reloc symbol indices will be for the output | |
8860955f AM |
18069 | file rather than the input. Save a copy of the relocs for |
18070 | opd_entry_value. */ | |
6313825c AM |
18071 | if (is_opd |
18072 | && (info->emitrelocations || bfd_link_relocatable (info)) | |
18073 | && input_section->reloc_count != 0) | |
8860955f AM |
18074 | { |
18075 | bfd_size_type amt; | |
18076 | amt = input_section->reloc_count * sizeof (Elf_Internal_Rela); | |
18077 | rel = bfd_alloc (input_bfd, amt); | |
6313825c | 18078 | ppc64_elf_section_data (input_section)->u.opd.u.relocs = rel; |
8860955f | 18079 | if (rel == NULL) |
0a1b45a2 | 18080 | return false; |
8860955f AM |
18081 | memcpy (rel, relocs, amt); |
18082 | } | |
5bd4f169 AM |
18083 | return ret; |
18084 | } | |
18085 | ||
754021d0 AM |
18086 | /* Adjust the value of any local symbols in opd sections. */ |
18087 | ||
6e0b88f1 | 18088 | static int |
754021d0 AM |
18089 | ppc64_elf_output_symbol_hook (struct bfd_link_info *info, |
18090 | const char *name ATTRIBUTE_UNUSED, | |
18091 | Elf_Internal_Sym *elfsym, | |
18092 | asection *input_sec, | |
18093 | struct elf_link_hash_entry *h) | |
18094 | { | |
74f0fb50 AM |
18095 | struct _opd_sec_data *opd; |
18096 | long adjust; | |
754021d0 AM |
18097 | bfd_vma value; |
18098 | ||
4025353c | 18099 | if (h != NULL) |
6e0b88f1 | 18100 | return 1; |
4025353c | 18101 | |
74f0fb50 AM |
18102 | opd = get_opd_info (input_sec); |
18103 | if (opd == NULL || opd->adjust == NULL) | |
6e0b88f1 | 18104 | return 1; |
754021d0 AM |
18105 | |
18106 | value = elfsym->st_value - input_sec->output_offset; | |
0e1862bb | 18107 | if (!bfd_link_relocatable (info)) |
754021d0 AM |
18108 | value -= input_sec->output_section->vma; |
18109 | ||
51aecdc5 | 18110 | adjust = opd->adjust[OPD_NDX (value)]; |
4025353c | 18111 | if (adjust == -1) |
6e0b88f1 AM |
18112 | return 2; |
18113 | ||
18114 | elfsym->st_value += adjust; | |
18115 | return 1; | |
754021d0 AM |
18116 | } |
18117 | ||
5bd4f169 AM |
18118 | /* Finish up dynamic symbol handling. We set the contents of various |
18119 | dynamic sections here. */ | |
18120 | ||
0a1b45a2 | 18121 | static bool |
4ce794b7 AM |
18122 | ppc64_elf_finish_dynamic_symbol (bfd *output_bfd, |
18123 | struct bfd_link_info *info, | |
18124 | struct elf_link_hash_entry *h, | |
4aef7643 | 18125 | Elf_Internal_Sym *sym) |
5bd4f169 | 18126 | { |
65f38f15 | 18127 | struct ppc_link_hash_table *htab; |
8387904d | 18128 | struct plt_entry *ent; |
5bd4f169 | 18129 | |
65f38f15 | 18130 | htab = ppc_hash_table (info); |
4dfe6ac6 | 18131 | if (htab == NULL) |
0a1b45a2 | 18132 | return false; |
5bd4f169 | 18133 | |
49c09209 AM |
18134 | if (!htab->opd_abi && !h->def_regular) |
18135 | for (ent = h->plt.plist; ent != NULL; ent = ent->next) | |
18136 | if (ent->plt.offset != (bfd_vma) -1) | |
18137 | { | |
18138 | /* Mark the symbol as undefined, rather than as | |
18139 | defined in glink. Leave the value if there were | |
18140 | any relocations where pointer equality matters | |
18141 | (this is a clue for the dynamic linker, to make | |
18142 | function pointer comparisons work between an | |
18143 | application and shared library), otherwise set it | |
18144 | to zero. */ | |
18145 | sym->st_shndx = SHN_UNDEF; | |
18146 | if (!h->pointer_equality_needed) | |
18147 | sym->st_value = 0; | |
18148 | else if (!h->ref_regular_nonweak) | |
18149 | { | |
18150 | /* This breaks function pointer comparisons, but | |
18151 | that is better than breaking tests for a NULL | |
18152 | function pointer. */ | |
18153 | sym->st_value = 0; | |
18154 | } | |
18155 | break; | |
18156 | } | |
5bd4f169 | 18157 | |
1bdd8fac AM |
18158 | if (h->needs_copy |
18159 | && (h->root.type == bfd_link_hash_defined | |
18160 | || h->root.type == bfd_link_hash_defweak) | |
18161 | && (h->root.u.def.section == htab->elf.sdynbss | |
18162 | || h->root.u.def.section == htab->elf.sdynrelro)) | |
5bd4f169 | 18163 | { |
65f38f15 | 18164 | /* This symbol needs a copy reloc. Set it up. */ |
49c09209 | 18165 | Elf_Internal_Rela rela; |
5474d94f | 18166 | asection *srel; |
49c09209 | 18167 | bfd_byte *loc; |
5bd4f169 | 18168 | |
1bdd8fac | 18169 | if (h->dynindx == -1) |
65f38f15 | 18170 | abort (); |
5bd4f169 | 18171 | |
ed7007c1 | 18172 | rela.r_offset = defined_sym_val (h); |
5bd4f169 AM |
18173 | rela.r_info = ELF64_R_INFO (h->dynindx, R_PPC64_COPY); |
18174 | rela.r_addend = 0; | |
afbf7e8e | 18175 | if (h->root.u.def.section == htab->elf.sdynrelro) |
5474d94f AM |
18176 | srel = htab->elf.sreldynrelro; |
18177 | else | |
18178 | srel = htab->elf.srelbss; | |
18179 | loc = srel->contents; | |
18180 | loc += srel->reloc_count++ * sizeof (Elf64_External_Rela); | |
65f38f15 | 18181 | bfd_elf64_swap_reloca_out (output_bfd, &rela, loc); |
5bd4f169 AM |
18182 | } |
18183 | ||
0a1b45a2 | 18184 | return true; |
5bd4f169 AM |
18185 | } |
18186 | ||
65f38f15 AM |
18187 | /* Used to decide how to sort relocs in an optimal manner for the |
18188 | dynamic linker, before writing them out. */ | |
18189 | ||
18190 | static enum elf_reloc_type_class | |
7e612e98 AM |
18191 | ppc64_elf_reloc_type_class (const struct bfd_link_info *info, |
18192 | const asection *rel_sec, | |
18193 | const Elf_Internal_Rela *rela) | |
65f38f15 | 18194 | { |
04c9666a | 18195 | enum elf_ppc64_reloc_type r_type; |
7e612e98 AM |
18196 | struct ppc_link_hash_table *htab = ppc_hash_table (info); |
18197 | ||
33e44f2e | 18198 | if (rel_sec == htab->elf.irelplt) |
7e612e98 | 18199 | return reloc_class_ifunc; |
a33d1f77 | 18200 | |
4ce794b7 | 18201 | r_type = ELF64_R_TYPE (rela->r_info); |
a33d1f77 | 18202 | switch (r_type) |
65f38f15 AM |
18203 | { |
18204 | case R_PPC64_RELATIVE: | |
18205 | return reloc_class_relative; | |
18206 | case R_PPC64_JMP_SLOT: | |
18207 | return reloc_class_plt; | |
18208 | case R_PPC64_COPY: | |
18209 | return reloc_class_copy; | |
18210 | default: | |
18211 | return reloc_class_normal; | |
18212 | } | |
18213 | } | |
18214 | ||
5bd4f169 AM |
18215 | /* Finish up the dynamic sections. */ |
18216 | ||
0a1b45a2 | 18217 | static bool |
4ce794b7 AM |
18218 | ppc64_elf_finish_dynamic_sections (bfd *output_bfd, |
18219 | struct bfd_link_info *info) | |
5bd4f169 | 18220 | { |
65f38f15 AM |
18221 | struct ppc_link_hash_table *htab; |
18222 | bfd *dynobj; | |
5bd4f169 | 18223 | asection *sdyn; |
5bd4f169 | 18224 | |
65f38f15 | 18225 | htab = ppc_hash_table (info); |
4dfe6ac6 | 18226 | if (htab == NULL) |
0a1b45a2 | 18227 | return false; |
4dfe6ac6 | 18228 | |
65f38f15 | 18229 | dynobj = htab->elf.dynobj; |
3d4d4302 | 18230 | sdyn = bfd_get_linker_section (dynobj, ".dynamic"); |
5bd4f169 | 18231 | |
65f38f15 | 18232 | if (htab->elf.dynamic_sections_created) |
5bd4f169 | 18233 | { |
5bd4f169 AM |
18234 | Elf64_External_Dyn *dyncon, *dynconend; |
18235 | ||
33e44f2e | 18236 | if (sdyn == NULL || htab->elf.sgot == NULL) |
65f38f15 | 18237 | abort (); |
5bd4f169 AM |
18238 | |
18239 | dyncon = (Elf64_External_Dyn *) sdyn->contents; | |
eea6121a | 18240 | dynconend = (Elf64_External_Dyn *) (sdyn->contents + sdyn->size); |
5bd4f169 AM |
18241 | for (; dyncon < dynconend; dyncon++) |
18242 | { | |
18243 | Elf_Internal_Dyn dyn; | |
19397422 | 18244 | asection *s; |
5bd4f169 AM |
18245 | |
18246 | bfd_elf64_swap_dyn_in (dynobj, dyncon, &dyn); | |
18247 | ||
18248 | switch (dyn.d_tag) | |
18249 | { | |
65f38f15 AM |
18250 | default: |
18251 | continue; | |
5bd4f169 | 18252 | |
5d1634d7 | 18253 | case DT_PPC64_GLINK: |
4ce794b7 | 18254 | s = htab->glink; |
6348e046 | 18255 | dyn.d_un.d_ptr = s->output_section->vma + s->output_offset; |
ad8e1ba5 AM |
18256 | /* We stupidly defined DT_PPC64_GLINK to be the start |
18257 | of glink rather than the first entry point, which is | |
18258 | what ld.so needs, and now have a bigger stub to | |
18259 | support automatic multiple TOCs. */ | |
9e390558 | 18260 | dyn.d_un.d_ptr += GLINK_PLTRESOLVE_SIZE (htab) - 8 * 4; |
5d1634d7 AM |
18261 | break; |
18262 | ||
19397422 AM |
18263 | case DT_PPC64_OPD: |
18264 | s = bfd_get_section_by_name (output_bfd, ".opd"); | |
6348e046 AM |
18265 | if (s == NULL) |
18266 | continue; | |
18267 | dyn.d_un.d_ptr = s->vma; | |
19397422 AM |
18268 | break; |
18269 | ||
e8910a83 | 18270 | case DT_PPC64_OPT: |
5663e321 AM |
18271 | if ((htab->do_multi_toc && htab->multi_toc_needed) |
18272 | || htab->notoc_plt) | |
e8910a83 | 18273 | dyn.d_un.d_val |= PPC64_OPT_MULTI_TOC; |
f378ab09 AM |
18274 | if (htab->has_plt_localentry0) |
18275 | dyn.d_un.d_val |= PPC64_OPT_LOCALENTRY; | |
e8910a83 AM |
18276 | break; |
18277 | ||
19397422 AM |
18278 | case DT_PPC64_OPDSZ: |
18279 | s = bfd_get_section_by_name (output_bfd, ".opd"); | |
6348e046 AM |
18280 | if (s == NULL) |
18281 | continue; | |
eea6121a | 18282 | dyn.d_un.d_val = s->size; |
19397422 AM |
18283 | break; |
18284 | ||
65f38f15 | 18285 | case DT_PLTGOT: |
33e44f2e | 18286 | s = htab->elf.splt; |
6348e046 | 18287 | dyn.d_un.d_ptr = s->output_section->vma + s->output_offset; |
65f38f15 AM |
18288 | break; |
18289 | ||
18290 | case DT_JMPREL: | |
33e44f2e | 18291 | s = htab->elf.srelplt; |
6348e046 | 18292 | dyn.d_un.d_ptr = s->output_section->vma + s->output_offset; |
65f38f15 | 18293 | break; |
5bd4f169 | 18294 | |
65f38f15 | 18295 | case DT_PLTRELSZ: |
33e44f2e | 18296 | dyn.d_un.d_val = htab->elf.srelplt->size; |
5d1634d7 | 18297 | break; |
82e66161 AM |
18298 | |
18299 | case DT_TEXTREL: | |
cebd6b8a | 18300 | if (htab->elf.ifunc_resolvers) |
82e66161 AM |
18301 | info->callbacks->einfo |
18302 | (_("%P: warning: text relocations and GNU indirect " | |
18303 | "functions may result in a segfault at runtime\n")); | |
18304 | continue; | |
5bd4f169 | 18305 | } |
5bd4f169 | 18306 | |
65f38f15 | 18307 | bfd_elf64_swap_dyn_out (output_bfd, &dyn, dyncon); |
5bd4f169 | 18308 | } |
5bd4f169 AM |
18309 | } |
18310 | ||
6528b6eb AM |
18311 | if (htab->elf.sgot != NULL && htab->elf.sgot->size != 0 |
18312 | && htab->elf.sgot->output_section != bfd_abs_section_ptr) | |
5d1634d7 AM |
18313 | { |
18314 | /* Fill in the first entry in the global offset table. | |
18315 | We use it to hold the link-time TOCbase. */ | |
18316 | bfd_put_64 (output_bfd, | |
60ee0d4a | 18317 | elf_gp (output_bfd) + TOC_BASE_OFF, |
33e44f2e | 18318 | htab->elf.sgot->contents); |
5d1634d7 AM |
18319 | |
18320 | /* Set .got entry size. */ | |
2cdcc330 AM |
18321 | elf_section_data (htab->elf.sgot->output_section)->this_hdr.sh_entsize |
18322 | = 8; | |
5d1634d7 AM |
18323 | } |
18324 | ||
6528b6eb AM |
18325 | if (htab->elf.splt != NULL && htab->elf.splt->size != 0 |
18326 | && htab->elf.splt->output_section != bfd_abs_section_ptr) | |
5d1634d7 AM |
18327 | { |
18328 | /* Set .plt entry size. */ | |
33e44f2e | 18329 | elf_section_data (htab->elf.splt->output_section)->this_hdr.sh_entsize |
b9e5796b | 18330 | = PLT_ENTRY_SIZE (htab); |
5d1634d7 AM |
18331 | } |
18332 | ||
84f5d08e AM |
18333 | /* brlt is SEC_LINKER_CREATED, so we need to write out relocs for |
18334 | brlt ourselves if emitrelocations. */ | |
18335 | if (htab->brlt != NULL | |
18336 | && htab->brlt->reloc_count != 0 | |
18337 | && !_bfd_elf_link_output_relocs (output_bfd, | |
18338 | htab->brlt, | |
d4730f92 | 18339 | elf_section_data (htab->brlt)->rela.hdr, |
84f5d08e AM |
18340 | elf_section_data (htab->brlt)->relocs, |
18341 | NULL)) | |
0a1b45a2 | 18342 | return false; |
84f5d08e | 18343 | |
176a0d42 AM |
18344 | if (htab->glink != NULL |
18345 | && htab->glink->reloc_count != 0 | |
18346 | && !_bfd_elf_link_output_relocs (output_bfd, | |
18347 | htab->glink, | |
d4730f92 | 18348 | elf_section_data (htab->glink)->rela.hdr, |
176a0d42 AM |
18349 | elf_section_data (htab->glink)->relocs, |
18350 | NULL)) | |
0a1b45a2 | 18351 | return false; |
176a0d42 | 18352 | |
da44f4e5 | 18353 | |
df136d64 AM |
18354 | if (htab->glink_eh_frame != NULL |
18355 | && htab->glink_eh_frame->size != 0 | |
18356 | && htab->glink_eh_frame->sec_info_type == SEC_INFO_TYPE_EH_FRAME | |
18357 | && !_bfd_elf_write_section_eh_frame (output_bfd, info, | |
18358 | htab->glink_eh_frame, | |
18359 | htab->glink_eh_frame->contents)) | |
0a1b45a2 | 18360 | return false; |
58d180e8 | 18361 | |
e717da7e | 18362 | /* We need to handle writing out multiple GOT sections ourselves, |
7b53ace3 AM |
18363 | since we didn't add them to DYNOBJ. We know dynobj is the first |
18364 | bfd. */ | |
c72f2fb2 | 18365 | while ((dynobj = dynobj->link.next) != NULL) |
e717da7e AM |
18366 | { |
18367 | asection *s; | |
7b53ace3 | 18368 | |
0c8d6e5c | 18369 | if (!is_ppc64_elf (dynobj)) |
7b53ace3 AM |
18370 | continue; |
18371 | ||
e717da7e AM |
18372 | s = ppc64_elf_tdata (dynobj)->got; |
18373 | if (s != NULL | |
eea6121a | 18374 | && s->size != 0 |
e717da7e AM |
18375 | && s->output_section != bfd_abs_section_ptr |
18376 | && !bfd_set_section_contents (output_bfd, s->output_section, | |
18377 | s->contents, s->output_offset, | |
eea6121a | 18378 | s->size)) |
0a1b45a2 | 18379 | return false; |
e717da7e AM |
18380 | s = ppc64_elf_tdata (dynobj)->relgot; |
18381 | if (s != NULL | |
eea6121a | 18382 | && s->size != 0 |
e717da7e AM |
18383 | && s->output_section != bfd_abs_section_ptr |
18384 | && !bfd_set_section_contents (output_bfd, s->output_section, | |
18385 | s->contents, s->output_offset, | |
eea6121a | 18386 | s->size)) |
0a1b45a2 | 18387 | return false; |
e717da7e | 18388 | } |
f6c52c13 | 18389 | |
0a1b45a2 | 18390 | return true; |
5bd4f169 AM |
18391 | } |
18392 | ||
6313825c AM |
18393 | static bool |
18394 | ppc64_elf_free_cached_info (bfd *abfd) | |
18395 | { | |
18396 | if (abfd->sections) | |
18397 | for (asection *opd = bfd_get_section_by_name (abfd, ".opd"); | |
18398 | opd != NULL; | |
18399 | opd = bfd_get_next_section_by_name (NULL, opd)) | |
18400 | if (opd->reloc_count == 0) | |
18401 | free (ppc64_elf_section_data (opd)->u.opd.u.contents); | |
18402 | ||
09d757a5 | 18403 | return _bfd_elf_free_cached_info (abfd); |
6313825c AM |
18404 | } |
18405 | ||
5bd4f169 | 18406 | #include "elf64-target.h" |
7b8e7dad AM |
18407 | |
18408 | /* FreeBSD support */ | |
18409 | ||
18410 | #undef TARGET_LITTLE_SYM | |
6afcdeb3 | 18411 | #define TARGET_LITTLE_SYM powerpc_elf64_fbsd_le_vec |
7b8e7dad | 18412 | #undef TARGET_LITTLE_NAME |
6afcdeb3 | 18413 | #define TARGET_LITTLE_NAME "elf64-powerpcle-freebsd" |
7b8e7dad AM |
18414 | |
18415 | #undef TARGET_BIG_SYM | |
6d00b590 | 18416 | #define TARGET_BIG_SYM powerpc_elf64_fbsd_vec |
7b8e7dad AM |
18417 | #undef TARGET_BIG_NAME |
18418 | #define TARGET_BIG_NAME "elf64-powerpc-freebsd" | |
18419 | ||
18420 | #undef ELF_OSABI | |
18421 | #define ELF_OSABI ELFOSABI_FREEBSD | |
18422 | ||
18423 | #undef elf64_bed | |
18424 | #define elf64_bed elf64_powerpc_fbsd_bed | |
18425 | ||
18426 | #include "elf64-target.h" |