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5bd4f169 | 1 | /* PowerPC64-specific support for 64-bit ELF. |
b3adc24a | 2 | Copyright (C) 1999-2020 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 | |
3db64b00 | 28 | #include "sysdep.h" |
183e98be | 29 | #include <stdarg.h> |
5bd4f169 | 30 | #include "bfd.h" |
5bd4f169 AM |
31 | #include "bfdlink.h" |
32 | #include "libbfd.h" | |
33 | #include "elf-bfd.h" | |
04c9666a | 34 | #include "elf/ppc64.h" |
5d1634d7 | 35 | #include "elf64-ppc.h" |
58d180e8 | 36 | #include "dwarf2.h" |
5bd4f169 | 37 | |
bb294208 AM |
38 | /* All users of this file have bfd_octets_per_byte (abfd, sec) == 1. */ |
39 | #define OCTETS_PER_BYTE(ABFD, SEC) 1 | |
40 | ||
805fc799 | 41 | static bfd_reloc_status_type ppc64_elf_ha_reloc |
4ce794b7 | 42 | (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **); |
2441e016 AM |
43 | static bfd_reloc_status_type ppc64_elf_branch_reloc |
44 | (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **); | |
805fc799 | 45 | static bfd_reloc_status_type ppc64_elf_brtaken_reloc |
4ce794b7 | 46 | (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **); |
805fc799 | 47 | static bfd_reloc_status_type ppc64_elf_sectoff_reloc |
4ce794b7 | 48 | (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **); |
805fc799 | 49 | static bfd_reloc_status_type ppc64_elf_sectoff_ha_reloc |
4ce794b7 | 50 | (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **); |
805fc799 | 51 | static bfd_reloc_status_type ppc64_elf_toc_reloc |
4ce794b7 | 52 | (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **); |
805fc799 | 53 | static bfd_reloc_status_type ppc64_elf_toc_ha_reloc |
4ce794b7 | 54 | (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **); |
805fc799 | 55 | static bfd_reloc_status_type ppc64_elf_toc64_reloc |
4ce794b7 | 56 | (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **); |
5663e321 AM |
57 | static bfd_reloc_status_type ppc64_elf_prefix_reloc |
58 | (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **); | |
805fc799 | 59 | static bfd_reloc_status_type ppc64_elf_unhandled_reloc |
4ce794b7 | 60 | (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **); |
2441e016 | 61 | static bfd_vma opd_entry_value |
aef36ac1 | 62 | (asection *, bfd_vma, asection **, bfd_vma *, bfd_boolean); |
5bd4f169 | 63 | |
6d00b590 | 64 | #define TARGET_LITTLE_SYM powerpc_elf64_le_vec |
ad8e1ba5 | 65 | #define TARGET_LITTLE_NAME "elf64-powerpcle" |
6d00b590 | 66 | #define TARGET_BIG_SYM powerpc_elf64_vec |
ad8e1ba5 AM |
67 | #define TARGET_BIG_NAME "elf64-powerpc" |
68 | #define ELF_ARCH bfd_arch_powerpc | |
ae95ffa6 | 69 | #define ELF_TARGET_ID PPC64_ELF_DATA |
ad8e1ba5 AM |
70 | #define ELF_MACHINE_CODE EM_PPC64 |
71 | #define ELF_MAXPAGESIZE 0x10000 | |
702d1671 AM |
72 | #define ELF_COMMONPAGESIZE 0x1000 |
73 | #define ELF_RELROPAGESIZE ELF_MAXPAGESIZE | |
ad8e1ba5 AM |
74 | #define elf_info_to_howto ppc64_elf_info_to_howto |
75 | ||
76 | #define elf_backend_want_got_sym 0 | |
77 | #define elf_backend_want_plt_sym 0 | |
78 | #define elf_backend_plt_alignment 3 | |
79 | #define elf_backend_plt_not_loaded 1 | |
ad8e1ba5 | 80 | #define elf_backend_got_header_size 8 |
5474d94f | 81 | #define elf_backend_want_dynrelro 1 |
ad8e1ba5 AM |
82 | #define elf_backend_can_gc_sections 1 |
83 | #define elf_backend_can_refcount 1 | |
84 | #define elf_backend_rela_normal 1 | |
64f52338 | 85 | #define elf_backend_dtrel_excludes_plt 1 |
6bfdb61b | 86 | #define elf_backend_default_execstack 0 |
ad8e1ba5 | 87 | |
e717da7e | 88 | #define bfd_elf64_mkobject ppc64_elf_mkobject |
ad8e1ba5 | 89 | #define bfd_elf64_bfd_reloc_type_lookup ppc64_elf_reloc_type_lookup |
aa374f67 | 90 | #define bfd_elf64_bfd_reloc_name_lookup ppc64_elf_reloc_name_lookup |
ee67d69a AM |
91 | #define bfd_elf64_bfd_merge_private_bfd_data ppc64_elf_merge_private_bfd_data |
92 | #define bfd_elf64_bfd_print_private_bfd_data ppc64_elf_print_private_bfd_data | |
ad8e1ba5 AM |
93 | #define bfd_elf64_new_section_hook ppc64_elf_new_section_hook |
94 | #define bfd_elf64_bfd_link_hash_table_create ppc64_elf_link_hash_table_create | |
90e3cdf2 | 95 | #define bfd_elf64_get_synthetic_symtab ppc64_elf_get_synthetic_symtab |
aa374f67 | 96 | #define bfd_elf64_bfd_link_just_syms ppc64_elf_link_just_syms |
8c5b4e52 | 97 | #define bfd_elf64_bfd_gc_sections ppc64_elf_gc_sections |
ad8e1ba5 AM |
98 | |
99 | #define elf_backend_object_p ppc64_elf_object_p | |
d37c89e5 AM |
100 | #define elf_backend_grok_prstatus ppc64_elf_grok_prstatus |
101 | #define elf_backend_grok_psinfo ppc64_elf_grok_psinfo | |
183e98be | 102 | #define elf_backend_write_core_note ppc64_elf_write_core_note |
9d19e4fd | 103 | #define elf_backend_create_dynamic_sections _bfd_elf_create_dynamic_sections |
ad8e1ba5 | 104 | #define elf_backend_copy_indirect_symbol ppc64_elf_copy_indirect_symbol |
555cd476 | 105 | #define elf_backend_add_symbol_hook ppc64_elf_add_symbol_hook |
f6c7c3e8 | 106 | #define elf_backend_check_directives ppc64_elf_before_check_relocs |
e5034e59 | 107 | #define elf_backend_notice_as_needed ppc64_elf_notice_as_needed |
8387904d | 108 | #define elf_backend_archive_symbol_lookup ppc64_elf_archive_symbol_lookup |
ad8e1ba5 | 109 | #define elf_backend_check_relocs ppc64_elf_check_relocs |
c0e331c7 | 110 | #define elf_backend_relocs_compatible _bfd_elf_relocs_compatible |
74f0fb50 | 111 | #define elf_backend_gc_keep ppc64_elf_gc_keep |
64d03ab5 | 112 | #define elf_backend_gc_mark_dynamic_ref ppc64_elf_gc_mark_dynamic_ref |
ad8e1ba5 | 113 | #define elf_backend_gc_mark_hook ppc64_elf_gc_mark_hook |
ad8e1ba5 AM |
114 | #define elf_backend_adjust_dynamic_symbol ppc64_elf_adjust_dynamic_symbol |
115 | #define elf_backend_hide_symbol ppc64_elf_hide_symbol | |
9f296da3 | 116 | #define elf_backend_maybe_function_sym ppc64_elf_maybe_function_sym |
ad8e1ba5 AM |
117 | #define elf_backend_always_size_sections ppc64_elf_func_desc_adjust |
118 | #define elf_backend_size_dynamic_sections ppc64_elf_size_dynamic_sections | |
a345bc8d | 119 | #define elf_backend_hash_symbol ppc64_elf_hash_symbol |
74541ad4 | 120 | #define elf_backend_init_index_section _bfd_elf_init_2_index_sections |
60124e18 | 121 | #define elf_backend_action_discarded ppc64_elf_action_discarded |
ad8e1ba5 AM |
122 | #define elf_backend_relocate_section ppc64_elf_relocate_section |
123 | #define elf_backend_finish_dynamic_symbol ppc64_elf_finish_dynamic_symbol | |
124 | #define elf_backend_reloc_type_class ppc64_elf_reloc_type_class | |
125 | #define elf_backend_finish_dynamic_sections ppc64_elf_finish_dynamic_sections | |
754021d0 | 126 | #define elf_backend_link_output_symbol_hook ppc64_elf_output_symbol_hook |
29ef7005 | 127 | #define elf_backend_special_sections ppc64_elf_special_sections |
bf577467 | 128 | #define elf_backend_section_flags ppc64_elf_section_flags |
6911b7dc | 129 | #define elf_backend_merge_symbol_attribute ppc64_elf_merge_symbol_attribute |
8c5b4e52 | 130 | #define elf_backend_merge_symbol ppc64_elf_merge_symbol |
bce964aa | 131 | #define elf_backend_get_reloc_section bfd_get_section_by_name |
ad8e1ba5 | 132 | |
5bd4f169 AM |
133 | /* The name of the dynamic interpreter. This is put in the .interp |
134 | section. */ | |
135 | #define ELF_DYNAMIC_INTERPRETER "/usr/lib/ld.so.1" | |
136 | ||
137 | /* The size in bytes of an entry in the procedure linkage table. */ | |
b9e5796b | 138 | #define PLT_ENTRY_SIZE(htab) (htab->opd_abi ? 24 : 8) |
2d7ad24e | 139 | #define LOCAL_PLT_ENTRY_SIZE(htab) (htab->opd_abi ? 16 : 8) |
5bd4f169 AM |
140 | |
141 | /* The initial size of the plt reserved for the dynamic linker. */ | |
b9e5796b | 142 | #define PLT_INITIAL_ENTRY_SIZE(htab) (htab->opd_abi ? 24 : 16) |
5bd4f169 | 143 | |
a078d95a AM |
144 | /* Offsets to some stack save slots. */ |
145 | #define STK_LR 16 | |
146 | #define STK_TOC(htab) (htab->opd_abi ? 40 : 24) | |
eb8d7fda | 147 | /* This one is dodgy. ELFv2 does not have a linker word, so use the |
a078d95a AM |
148 | CR save slot. Used only by optimised __tls_get_addr call stub, |
149 | relying on __tls_get_addr_opt not saving CR.. */ | |
150 | #define STK_LINKER(htab) (htab->opd_abi ? 32 : 8) | |
151 | ||
5bd4f169 | 152 | /* TOC base pointers offset from start of TOC. */ |
411e1bfb | 153 | #define TOC_BASE_OFF 0x8000 |
a27e685f AM |
154 | /* TOC base alignment. */ |
155 | #define TOC_BASE_ALIGN 256 | |
411e1bfb AM |
156 | |
157 | /* Offset of tp and dtp pointers from start of TLS block. */ | |
158 | #define TP_OFFSET 0x7000 | |
159 | #define DTP_OFFSET 0x8000 | |
5bd4f169 | 160 | |
ad8e1ba5 AM |
161 | /* .plt call stub instructions. The normal stub is like this, but |
162 | sometimes the .plt entry crosses a 64k boundary and we need to | |
71a39c98 | 163 | insert an addi to adjust r11. */ |
a078d95a | 164 | #define STD_R2_0R1 0xf8410000 /* std %r2,0+40(%r1) */ |
71a39c98 AM |
165 | #define ADDIS_R11_R2 0x3d620000 /* addis %r11,%r2,xxx@ha */ |
166 | #define LD_R12_0R11 0xe98b0000 /* ld %r12,xxx+0@l(%r11) */ | |
167 | #define MTCTR_R12 0x7d8903a6 /* mtctr %r12 */ | |
168 | #define LD_R2_0R11 0xe84b0000 /* ld %r2,xxx+8@l(%r11) */ | |
169 | #define LD_R11_0R11 0xe96b0000 /* ld %r11,xxx+16@l(%r11) */ | |
5d1634d7 AM |
170 | #define BCTR 0x4e800420 /* bctr */ |
171 | ||
07d6d2b8 | 172 | #define ADDI_R11_R11 0x396b0000 /* addi %r11,%r11,off@l */ |
05d0e962 AM |
173 | #define ADDI_R12_R11 0x398b0000 /* addi %r12,%r11,off@l */ |
174 | #define ADDI_R12_R12 0x398c0000 /* addi %r12,%r12,off@l */ | |
07d6d2b8 AM |
175 | #define ADDIS_R2_R2 0x3c420000 /* addis %r2,%r2,off@ha */ |
176 | #define ADDI_R2_R2 0x38420000 /* addi %r2,%r2,off@l */ | |
177 | ||
178 | #define XOR_R2_R12_R12 0x7d826278 /* xor %r2,%r12,%r12 */ | |
179 | #define ADD_R11_R11_R2 0x7d6b1214 /* add %r11,%r11,%r2 */ | |
180 | #define XOR_R11_R12_R12 0x7d8b6278 /* xor %r11,%r12,%r12 */ | |
181 | #define ADD_R2_R2_R11 0x7c425a14 /* add %r2,%r2,%r11 */ | |
182 | #define CMPLDI_R2_0 0x28220000 /* cmpldi %r2,0 */ | |
183 | #define BNECTR 0x4ca20420 /* bnectr+ */ | |
184 | #define BNECTR_P4 0x4ce20420 /* bnectr+ */ | |
794e51c0 | 185 | |
71a39c98 | 186 | #define LD_R12_0R2 0xe9820000 /* ld %r12,xxx+0(%r2) */ |
ac2df442 | 187 | #define LD_R11_0R2 0xe9620000 /* ld %r11,xxx+0(%r2) */ |
07d6d2b8 | 188 | #define LD_R2_0R2 0xe8420000 /* ld %r2,xxx+0(%r2) */ |
ac2df442 | 189 | |
07d6d2b8 AM |
190 | #define LD_R2_0R1 0xe8410000 /* ld %r2,0(%r1) */ |
191 | #define LD_R2_0R12 0xe84c0000 /* ld %r2,0(%r12) */ | |
192 | #define ADD_R2_R2_R12 0x7c426214 /* add %r2,%r2,%r12 */ | |
ad8e1ba5 | 193 | |
04bdff6a | 194 | #define LI_R11_0 0x39600000 /* li %r11,0 */ |
07d6d2b8 | 195 | #define LIS_R2 0x3c400000 /* lis %r2,xxx@ha */ |
04bdff6a | 196 | #define LIS_R11 0x3d600000 /* lis %r11,xxx@ha */ |
05d0e962 | 197 | #define LIS_R12 0x3d800000 /* lis %r12,xxx@ha */ |
006589cf AM |
198 | #define ADDIS_R2_R12 0x3c4c0000 /* addis %r2,%r12,xxx@ha */ |
199 | #define ADDIS_R12_R2 0x3d820000 /* addis %r12,%r2,xxx@ha */ | |
05d0e962 | 200 | #define ADDIS_R12_R11 0x3d8b0000 /* addis %r12,%r11,xxx@ha */ |
a345bc8d | 201 | #define ADDIS_R12_R12 0x3d8c0000 /* addis %r12,%r12,xxx@ha */ |
05d0e962 | 202 | #define ORIS_R12_R12_0 0x658c0000 /* oris %r12,%r12,xxx@hi */ |
04bdff6a | 203 | #define ORI_R11_R11_0 0x616b0000 /* ori %r11,%r11,xxx@l */ |
05d0e962 | 204 | #define ORI_R12_R12_0 0x618c0000 /* ori %r12,%r12,xxx@l */ |
07d6d2b8 | 205 | #define LD_R12_0R12 0xe98c0000 /* ld %r12,xxx@l(%r12) */ |
04bdff6a | 206 | #define SLDI_R11_R11_34 0x796b1746 /* sldi %r11,%r11,34 */ |
05d0e962 AM |
207 | #define SLDI_R12_R12_32 0x799c07c6 /* sldi %r12,%r12,32 */ |
208 | #define LDX_R12_R11_R12 0x7d8b602a /* ldx %r12,%r11,%r12 */ | |
209 | #define ADD_R12_R11_R12 0x7d8b6214 /* add %r12,%r11,%r12 */ | |
04bdff6a AM |
210 | #define PADDI_R12_PC 0x0610000039800000ULL |
211 | #define PLD_R12_PC 0x04100000e5800000ULL | |
5663e321 | 212 | #define PNOP 0x0700000000000000ULL |
a345bc8d | 213 | |
9e390558 AM |
214 | /* __glink_PLTresolve stub instructions. We enter with the index in R0. */ |
215 | #define GLINK_PLTRESOLVE_SIZE(htab) \ | |
407aa07c | 216 | (8u + (htab->opd_abi ? 11 * 4 : 14 * 4)) |
ee4bf8d2 AM |
217 | /* 0: */ |
218 | /* .quad plt0-1f */ | |
219 | /* __glink: */ | |
220 | #define MFLR_R12 0x7d8802a6 /* mflr %12 */ | |
221 | #define BCL_20_31 0x429f0005 /* bcl 20,31,1f */ | |
222 | /* 1: */ | |
223 | #define MFLR_R11 0x7d6802a6 /* mflr %11 */ | |
71a39c98 | 224 | /* ld %2,(0b-1b)(%11) */ |
ee4bf8d2 | 225 | #define MTLR_R12 0x7d8803a6 /* mtlr %12 */ |
71a39c98 AM |
226 | #define ADD_R11_R2_R11 0x7d625a14 /* add %11,%2,%11 */ |
227 | /* ld %12,0(%11) */ | |
228 | /* ld %2,8(%11) */ | |
229 | /* mtctr %12 */ | |
230 | /* ld %11,16(%11) */ | |
ee4bf8d2 | 231 | /* bctr */ |
b9e5796b AM |
232 | #define MFLR_R0 0x7c0802a6 /* mflr %r0 */ |
233 | #define MTLR_R0 0x7c0803a6 /* mtlr %r0 */ | |
234 | #define SUB_R12_R12_R11 0x7d8b6050 /* subf %r12,%r11,%r12 */ | |
235 | #define ADDI_R0_R12 0x380c0000 /* addi %r0,%r12,0 */ | |
236 | #define SRDI_R0_R0_2 0x7800f082 /* rldicl %r0,%r0,62,2 */ | |
5d1634d7 AM |
237 | |
238 | /* Pad with this. */ | |
239 | #define NOP 0x60000000 | |
240 | ||
721956f4 AM |
241 | /* Some other nops. */ |
242 | #define CROR_151515 0x4def7b82 | |
243 | #define CROR_313131 0x4ffffb82 | |
244 | ||
cedb70c5 | 245 | /* .glink entries for the first 32k functions are two instructions. */ |
5d1634d7 AM |
246 | #define LI_R0_0 0x38000000 /* li %r0,0 */ |
247 | #define B_DOT 0x48000000 /* b . */ | |
248 | ||
249 | /* After that, we need two instructions to load the index, followed by | |
250 | a branch. */ | |
251 | #define LIS_R0_0 0x3c000000 /* lis %r0,0 */ | |
10ed1bba | 252 | #define ORI_R0_R0_0 0x60000000 /* ori %r0,%r0,0 */ |
41bd81ab | 253 | |
deb0e272 AM |
254 | /* Instructions used by the save and restore reg functions. */ |
255 | #define STD_R0_0R1 0xf8010000 /* std %r0,0(%r1) */ | |
256 | #define STD_R0_0R12 0xf80c0000 /* std %r0,0(%r12) */ | |
257 | #define LD_R0_0R1 0xe8010000 /* ld %r0,0(%r1) */ | |
258 | #define LD_R0_0R12 0xe80c0000 /* ld %r0,0(%r12) */ | |
82bd7b59 AM |
259 | #define STFD_FR0_0R1 0xd8010000 /* stfd %fr0,0(%r1) */ |
260 | #define LFD_FR0_0R1 0xc8010000 /* lfd %fr0,0(%r1) */ | |
deb0e272 AM |
261 | #define LI_R12_0 0x39800000 /* li %r12,0 */ |
262 | #define STVX_VR0_R12_R0 0x7c0c01ce /* stvx %v0,%r12,%r0 */ | |
263 | #define LVX_VR0_R12_R0 0x7c0c00ce /* lvx %v0,%r12,%r0 */ | |
264 | #define MTLR_R0 0x7c0803a6 /* mtlr %r0 */ | |
82bd7b59 AM |
265 | #define BLR 0x4e800020 /* blr */ |
266 | ||
41bd81ab AM |
267 | /* Since .opd is an array of descriptors and each entry will end up |
268 | with identical R_PPC64_RELATIVE relocs, there is really no need to | |
269 | propagate .opd relocs; The dynamic linker should be taught to | |
1e2f5b6e | 270 | relocate .opd without reloc entries. */ |
41bd81ab AM |
271 | #ifndef NO_OPD_RELOCS |
272 | #define NO_OPD_RELOCS 0 | |
273 | #endif | |
810d4e75 | 274 | |
a4b6fadd AM |
275 | #ifndef ARRAY_SIZE |
276 | #define ARRAY_SIZE(a) (sizeof (a) / sizeof ((a)[0])) | |
277 | #endif | |
278 | ||
810d4e75 AM |
279 | static inline int |
280 | abiversion (bfd *abfd) | |
281 | { | |
282 | return elf_elfheader (abfd)->e_flags & EF_PPC64_ABI; | |
283 | } | |
284 | ||
285 | static inline void | |
286 | set_abiversion (bfd *abfd, int ver) | |
287 | { | |
288 | elf_elfheader (abfd)->e_flags &= ~EF_PPC64_ABI; | |
289 | elf_elfheader (abfd)->e_flags |= ver & EF_PPC64_ABI; | |
290 | } | |
5bd4f169 AM |
291 | \f |
292 | /* Relocation HOWTO's. */ | |
46807bf4 AM |
293 | /* Like other ELF RELA targets that don't apply multiple |
294 | field-altering relocations to the same localation, src_mask is | |
295 | always zero and pcrel_offset is the same as pc_relative. | |
296 | PowerPC can always use a zero bitpos, even when the field is not at | |
297 | the LSB. For example, a REL24 could use rightshift=2, bisize=24 | |
298 | and bitpos=2 which matches the ABI description, or as we do here, | |
299 | rightshift=0, bitsize=26 and bitpos=0. */ | |
300 | #define HOW(type, size, bitsize, mask, rightshift, pc_relative, \ | |
301 | complain, special_func) \ | |
302 | HOWTO (type, rightshift, size, bitsize, pc_relative, 0, \ | |
303 | complain_overflow_ ## complain, special_func, \ | |
304 | #type, FALSE, 0, mask, pc_relative) | |
305 | ||
04c9666a | 306 | static reloc_howto_type *ppc64_elf_howto_table[(int) R_PPC64_max]; |
5bd4f169 | 307 | |
f3185997 NC |
308 | static reloc_howto_type ppc64_elf_howto_raw[] = |
309 | { | |
5bd4f169 | 310 | /* This reloc does nothing. */ |
46807bf4 AM |
311 | HOW (R_PPC64_NONE, 3, 0, 0, 0, FALSE, dont, |
312 | bfd_elf_generic_reloc), | |
5bd4f169 AM |
313 | |
314 | /* A standard 32 bit relocation. */ | |
46807bf4 AM |
315 | HOW (R_PPC64_ADDR32, 2, 32, 0xffffffff, 0, FALSE, bitfield, |
316 | bfd_elf_generic_reloc), | |
5bd4f169 AM |
317 | |
318 | /* An absolute 26 bit branch; the lower two bits must be zero. | |
319 | FIXME: we don't check that, we just clear them. */ | |
46807bf4 AM |
320 | HOW (R_PPC64_ADDR24, 2, 26, 0x03fffffc, 0, FALSE, bitfield, |
321 | bfd_elf_generic_reloc), | |
5bd4f169 AM |
322 | |
323 | /* A standard 16 bit relocation. */ | |
46807bf4 AM |
324 | HOW (R_PPC64_ADDR16, 1, 16, 0xffff, 0, FALSE, bitfield, |
325 | bfd_elf_generic_reloc), | |
5bd4f169 AM |
326 | |
327 | /* A 16 bit relocation without overflow. */ | |
46807bf4 AM |
328 | HOW (R_PPC64_ADDR16_LO, 1, 16, 0xffff, 0, FALSE, dont, |
329 | bfd_elf_generic_reloc), | |
5bd4f169 AM |
330 | |
331 | /* Bits 16-31 of an address. */ | |
46807bf4 AM |
332 | HOW (R_PPC64_ADDR16_HI, 1, 16, 0xffff, 16, FALSE, signed, |
333 | bfd_elf_generic_reloc), | |
5bd4f169 AM |
334 | |
335 | /* Bits 16-31 of an address, plus 1 if the contents of the low 16 | |
336 | bits, treated as a signed number, is negative. */ | |
46807bf4 AM |
337 | HOW (R_PPC64_ADDR16_HA, 1, 16, 0xffff, 16, FALSE, signed, |
338 | ppc64_elf_ha_reloc), | |
5bd4f169 AM |
339 | |
340 | /* An absolute 16 bit branch; the lower two bits must be zero. | |
341 | FIXME: we don't check that, we just clear them. */ | |
46807bf4 AM |
342 | HOW (R_PPC64_ADDR14, 2, 16, 0x0000fffc, 0, FALSE, signed, |
343 | ppc64_elf_branch_reloc), | |
5bd4f169 AM |
344 | |
345 | /* An absolute 16 bit branch, for which bit 10 should be set to | |
346 | indicate that the branch is expected to be taken. The lower two | |
347 | bits must be zero. */ | |
46807bf4 AM |
348 | HOW (R_PPC64_ADDR14_BRTAKEN, 2, 16, 0x0000fffc, 0, FALSE, signed, |
349 | ppc64_elf_brtaken_reloc), | |
5bd4f169 AM |
350 | |
351 | /* An absolute 16 bit branch, for which bit 10 should be set to | |
352 | indicate that the branch is not expected to be taken. The lower | |
353 | two bits must be zero. */ | |
46807bf4 AM |
354 | HOW (R_PPC64_ADDR14_BRNTAKEN, 2, 16, 0x0000fffc, 0, FALSE, signed, |
355 | ppc64_elf_brtaken_reloc), | |
5bd4f169 AM |
356 | |
357 | /* A relative 26 bit branch; the lower two bits must be zero. */ | |
46807bf4 AM |
358 | HOW (R_PPC64_REL24, 2, 26, 0x03fffffc, 0, TRUE, signed, |
359 | ppc64_elf_branch_reloc), | |
5bd4f169 | 360 | |
05d0e962 | 361 | /* A variant of R_PPC64_REL24, used when r2 is not the toc pointer. */ |
46807bf4 AM |
362 | HOW (R_PPC64_REL24_NOTOC, 2, 26, 0x03fffffc, 0, TRUE, signed, |
363 | ppc64_elf_branch_reloc), | |
05d0e962 | 364 | |
5bd4f169 | 365 | /* A relative 16 bit branch; the lower two bits must be zero. */ |
46807bf4 AM |
366 | HOW (R_PPC64_REL14, 2, 16, 0x0000fffc, 0, TRUE, signed, |
367 | ppc64_elf_branch_reloc), | |
5bd4f169 AM |
368 | |
369 | /* A relative 16 bit branch. Bit 10 should be set to indicate that | |
370 | the branch is expected to be taken. The lower two bits must be | |
371 | zero. */ | |
46807bf4 AM |
372 | HOW (R_PPC64_REL14_BRTAKEN, 2, 16, 0x0000fffc, 0, TRUE, signed, |
373 | ppc64_elf_brtaken_reloc), | |
5bd4f169 AM |
374 | |
375 | /* A relative 16 bit branch. Bit 10 should be set to indicate that | |
376 | the branch is not expected to be taken. The lower two bits must | |
377 | be zero. */ | |
46807bf4 AM |
378 | HOW (R_PPC64_REL14_BRNTAKEN, 2, 16, 0x0000fffc, 0, TRUE, signed, |
379 | ppc64_elf_brtaken_reloc), | |
5bd4f169 AM |
380 | |
381 | /* Like R_PPC64_ADDR16, but referring to the GOT table entry for the | |
382 | symbol. */ | |
46807bf4 AM |
383 | HOW (R_PPC64_GOT16, 1, 16, 0xffff, 0, FALSE, signed, |
384 | ppc64_elf_unhandled_reloc), | |
5bd4f169 AM |
385 | |
386 | /* Like R_PPC64_ADDR16_LO, but referring to the GOT table entry for | |
387 | the symbol. */ | |
46807bf4 AM |
388 | HOW (R_PPC64_GOT16_LO, 1, 16, 0xffff, 0, FALSE, dont, |
389 | ppc64_elf_unhandled_reloc), | |
5bd4f169 AM |
390 | |
391 | /* Like R_PPC64_ADDR16_HI, but referring to the GOT table entry for | |
392 | the symbol. */ | |
46807bf4 AM |
393 | HOW (R_PPC64_GOT16_HI, 1, 16, 0xffff, 16, FALSE, signed, |
394 | ppc64_elf_unhandled_reloc), | |
5bd4f169 AM |
395 | |
396 | /* Like R_PPC64_ADDR16_HA, but referring to the GOT table entry for | |
397 | the symbol. */ | |
46807bf4 AM |
398 | HOW (R_PPC64_GOT16_HA, 1, 16, 0xffff, 16, FALSE, signed, |
399 | ppc64_elf_unhandled_reloc), | |
5bd4f169 AM |
400 | |
401 | /* This is used only by the dynamic linker. The symbol should exist | |
402 | both in the object being run and in some shared library. The | |
403 | dynamic linker copies the data addressed by the symbol from the | |
404 | shared library into the object, because the object being | |
405 | run has to have the data at some particular address. */ | |
46807bf4 AM |
406 | HOW (R_PPC64_COPY, 0, 0, 0, 0, FALSE, dont, |
407 | ppc64_elf_unhandled_reloc), | |
5bd4f169 AM |
408 | |
409 | /* Like R_PPC64_ADDR64, but used when setting global offset table | |
410 | entries. */ | |
46807bf4 AM |
411 | HOW (R_PPC64_GLOB_DAT, 4, 64, 0xffffffffffffffffULL, 0, FALSE, dont, |
412 | ppc64_elf_unhandled_reloc), | |
5bd4f169 AM |
413 | |
414 | /* Created by the link editor. Marks a procedure linkage table | |
415 | entry for a symbol. */ | |
46807bf4 AM |
416 | HOW (R_PPC64_JMP_SLOT, 0, 0, 0, 0, FALSE, dont, |
417 | ppc64_elf_unhandled_reloc), | |
5bd4f169 AM |
418 | |
419 | /* Used only by the dynamic linker. When the object is run, this | |
420 | doubleword64 is set to the load address of the object, plus the | |
421 | addend. */ | |
46807bf4 AM |
422 | HOW (R_PPC64_RELATIVE, 4, 64, 0xffffffffffffffffULL, 0, FALSE, dont, |
423 | bfd_elf_generic_reloc), | |
5bd4f169 AM |
424 | |
425 | /* Like R_PPC64_ADDR32, but may be unaligned. */ | |
46807bf4 AM |
426 | HOW (R_PPC64_UADDR32, 2, 32, 0xffffffff, 0, FALSE, bitfield, |
427 | bfd_elf_generic_reloc), | |
5bd4f169 AM |
428 | |
429 | /* Like R_PPC64_ADDR16, but may be unaligned. */ | |
46807bf4 AM |
430 | HOW (R_PPC64_UADDR16, 1, 16, 0xffff, 0, FALSE, bitfield, |
431 | bfd_elf_generic_reloc), | |
5bd4f169 AM |
432 | |
433 | /* 32-bit PC relative. */ | |
46807bf4 AM |
434 | HOW (R_PPC64_REL32, 2, 32, 0xffffffff, 0, TRUE, signed, |
435 | bfd_elf_generic_reloc), | |
5bd4f169 | 436 | |
10ed1bba | 437 | /* 32-bit relocation to the symbol's procedure linkage table. */ |
46807bf4 AM |
438 | HOW (R_PPC64_PLT32, 2, 32, 0xffffffff, 0, FALSE, bitfield, |
439 | ppc64_elf_unhandled_reloc), | |
5bd4f169 AM |
440 | |
441 | /* 32-bit PC relative relocation to the symbol's procedure linkage table. | |
442 | FIXME: R_PPC64_PLTREL32 not supported. */ | |
46807bf4 AM |
443 | HOW (R_PPC64_PLTREL32, 2, 32, 0xffffffff, 0, TRUE, signed, |
444 | ppc64_elf_unhandled_reloc), | |
5bd4f169 AM |
445 | |
446 | /* Like R_PPC64_ADDR16_LO, but referring to the PLT table entry for | |
447 | the symbol. */ | |
46807bf4 AM |
448 | HOW (R_PPC64_PLT16_LO, 1, 16, 0xffff, 0, FALSE, dont, |
449 | ppc64_elf_unhandled_reloc), | |
5bd4f169 AM |
450 | |
451 | /* Like R_PPC64_ADDR16_HI, but referring to the PLT table entry for | |
452 | the symbol. */ | |
46807bf4 AM |
453 | HOW (R_PPC64_PLT16_HI, 1, 16, 0xffff, 16, FALSE, signed, |
454 | ppc64_elf_unhandled_reloc), | |
5bd4f169 AM |
455 | |
456 | /* Like R_PPC64_ADDR16_HA, but referring to the PLT table entry for | |
457 | the symbol. */ | |
46807bf4 AM |
458 | HOW (R_PPC64_PLT16_HA, 1, 16, 0xffff, 16, FALSE, signed, |
459 | ppc64_elf_unhandled_reloc), | |
5bd4f169 | 460 | |
c061c2d8 | 461 | /* 16-bit section relative relocation. */ |
46807bf4 AM |
462 | HOW (R_PPC64_SECTOFF, 1, 16, 0xffff, 0, FALSE, signed, |
463 | ppc64_elf_sectoff_reloc), | |
5bd4f169 | 464 | |
c061c2d8 | 465 | /* Like R_PPC64_SECTOFF, but no overflow warning. */ |
46807bf4 AM |
466 | HOW (R_PPC64_SECTOFF_LO, 1, 16, 0xffff, 0, FALSE, dont, |
467 | ppc64_elf_sectoff_reloc), | |
5bd4f169 AM |
468 | |
469 | /* 16-bit upper half section relative relocation. */ | |
46807bf4 AM |
470 | HOW (R_PPC64_SECTOFF_HI, 1, 16, 0xffff, 16, FALSE, signed, |
471 | ppc64_elf_sectoff_reloc), | |
5bd4f169 AM |
472 | |
473 | /* 16-bit upper half adjusted section relative relocation. */ | |
46807bf4 AM |
474 | HOW (R_PPC64_SECTOFF_HA, 1, 16, 0xffff, 16, FALSE, signed, |
475 | ppc64_elf_sectoff_ha_reloc), | |
5bd4f169 | 476 | |
04c9666a | 477 | /* Like R_PPC64_REL24 without touching the two least significant bits. */ |
46807bf4 AM |
478 | HOW (R_PPC64_REL30, 2, 30, 0xfffffffc, 2, TRUE, dont, |
479 | bfd_elf_generic_reloc), | |
5bd4f169 AM |
480 | |
481 | /* Relocs in the 64-bit PowerPC ELF ABI, not in the 32-bit ABI. */ | |
482 | ||
483 | /* A standard 64-bit relocation. */ | |
46807bf4 AM |
484 | HOW (R_PPC64_ADDR64, 4, 64, 0xffffffffffffffffULL, 0, FALSE, dont, |
485 | bfd_elf_generic_reloc), | |
5bd4f169 AM |
486 | |
487 | /* The bits 32-47 of an address. */ | |
46807bf4 AM |
488 | HOW (R_PPC64_ADDR16_HIGHER, 1, 16, 0xffff, 32, FALSE, dont, |
489 | bfd_elf_generic_reloc), | |
5bd4f169 AM |
490 | |
491 | /* The bits 32-47 of an address, plus 1 if the contents of the low | |
492 | 16 bits, treated as a signed number, is negative. */ | |
46807bf4 AM |
493 | HOW (R_PPC64_ADDR16_HIGHERA, 1, 16, 0xffff, 32, FALSE, dont, |
494 | ppc64_elf_ha_reloc), | |
5bd4f169 AM |
495 | |
496 | /* The bits 48-63 of an address. */ | |
46807bf4 AM |
497 | HOW (R_PPC64_ADDR16_HIGHEST, 1, 16, 0xffff, 48, FALSE, dont, |
498 | bfd_elf_generic_reloc), | |
5bd4f169 AM |
499 | |
500 | /* The bits 48-63 of an address, plus 1 if the contents of the low | |
501 | 16 bits, treated as a signed number, is negative. */ | |
46807bf4 AM |
502 | HOW (R_PPC64_ADDR16_HIGHESTA, 1, 16, 0xffff, 48, FALSE, dont, |
503 | ppc64_elf_ha_reloc), | |
5bd4f169 AM |
504 | |
505 | /* Like ADDR64, but may be unaligned. */ | |
46807bf4 AM |
506 | HOW (R_PPC64_UADDR64, 4, 64, 0xffffffffffffffffULL, 0, FALSE, dont, |
507 | bfd_elf_generic_reloc), | |
5bd4f169 AM |
508 | |
509 | /* 64-bit relative relocation. */ | |
46807bf4 AM |
510 | HOW (R_PPC64_REL64, 4, 64, 0xffffffffffffffffULL, 0, TRUE, dont, |
511 | bfd_elf_generic_reloc), | |
5bd4f169 | 512 | |
cedb70c5 | 513 | /* 64-bit relocation to the symbol's procedure linkage table. */ |
46807bf4 AM |
514 | HOW (R_PPC64_PLT64, 4, 64, 0xffffffffffffffffULL, 0, FALSE, dont, |
515 | ppc64_elf_unhandled_reloc), | |
5bd4f169 AM |
516 | |
517 | /* 64-bit PC relative relocation to the symbol's procedure linkage | |
518 | table. */ | |
519 | /* FIXME: R_PPC64_PLTREL64 not supported. */ | |
46807bf4 AM |
520 | HOW (R_PPC64_PLTREL64, 4, 64, 0xffffffffffffffffULL, 0, TRUE, dont, |
521 | ppc64_elf_unhandled_reloc), | |
5bd4f169 AM |
522 | |
523 | /* 16 bit TOC-relative relocation. */ | |
5bd4f169 | 524 | /* R_PPC64_TOC16 47 half16* S + A - .TOC. */ |
46807bf4 AM |
525 | HOW (R_PPC64_TOC16, 1, 16, 0xffff, 0, FALSE, signed, |
526 | ppc64_elf_toc_reloc), | |
5bd4f169 AM |
527 | |
528 | /* 16 bit TOC-relative relocation without overflow. */ | |
5bd4f169 | 529 | /* R_PPC64_TOC16_LO 48 half16 #lo (S + A - .TOC.) */ |
46807bf4 AM |
530 | HOW (R_PPC64_TOC16_LO, 1, 16, 0xffff, 0, FALSE, dont, |
531 | ppc64_elf_toc_reloc), | |
5bd4f169 AM |
532 | |
533 | /* 16 bit TOC-relative relocation, high 16 bits. */ | |
5bd4f169 | 534 | /* R_PPC64_TOC16_HI 49 half16 #hi (S + A - .TOC.) */ |
46807bf4 AM |
535 | HOW (R_PPC64_TOC16_HI, 1, 16, 0xffff, 16, FALSE, signed, |
536 | ppc64_elf_toc_reloc), | |
5bd4f169 AM |
537 | |
538 | /* 16 bit TOC-relative relocation, high 16 bits, plus 1 if the | |
539 | contents of the low 16 bits, treated as a signed number, is | |
540 | negative. */ | |
5bd4f169 | 541 | /* R_PPC64_TOC16_HA 50 half16 #ha (S + A - .TOC.) */ |
46807bf4 AM |
542 | HOW (R_PPC64_TOC16_HA, 1, 16, 0xffff, 16, FALSE, signed, |
543 | ppc64_elf_toc_ha_reloc), | |
5bd4f169 AM |
544 | |
545 | /* 64-bit relocation; insert value of TOC base (.TOC.). */ | |
5bd4f169 | 546 | /* R_PPC64_TOC 51 doubleword64 .TOC. */ |
46807bf4 AM |
547 | HOW (R_PPC64_TOC, 4, 64, 0xffffffffffffffffULL, 0, FALSE, dont, |
548 | ppc64_elf_toc64_reloc), | |
5bd4f169 AM |
549 | |
550 | /* Like R_PPC64_GOT16, but also informs the link editor that the | |
551 | value to relocate may (!) refer to a PLT entry which the link | |
552 | editor (a) may replace with the symbol value. If the link editor | |
553 | is unable to fully resolve the symbol, it may (b) create a PLT | |
554 | entry and store the address to the new PLT entry in the GOT. | |
555 | This permits lazy resolution of function symbols at run time. | |
556 | The link editor may also skip all of this and just (c) emit a | |
557 | R_PPC64_GLOB_DAT to tie the symbol to the GOT entry. */ | |
558 | /* FIXME: R_PPC64_PLTGOT16 not implemented. */ | |
46807bf4 AM |
559 | HOW (R_PPC64_PLTGOT16, 1, 16, 0xffff, 0, FALSE,signed, |
560 | ppc64_elf_unhandled_reloc), | |
411e1bfb AM |
561 | |
562 | /* Like R_PPC64_PLTGOT16, but without overflow. */ | |
563 | /* FIXME: R_PPC64_PLTGOT16_LO not implemented. */ | |
46807bf4 AM |
564 | HOW (R_PPC64_PLTGOT16_LO, 1, 16, 0xffff, 0, FALSE, dont, |
565 | ppc64_elf_unhandled_reloc), | |
411e1bfb AM |
566 | |
567 | /* Like R_PPC64_PLT_GOT16, but using bits 16-31 of the address. */ | |
568 | /* FIXME: R_PPC64_PLTGOT16_HI not implemented. */ | |
46807bf4 AM |
569 | HOW (R_PPC64_PLTGOT16_HI, 1, 16, 0xffff, 16, FALSE, signed, |
570 | ppc64_elf_unhandled_reloc), | |
411e1bfb AM |
571 | |
572 | /* Like R_PPC64_PLT_GOT16, but using bits 16-31 of the address, plus | |
573 | 1 if the contents of the low 16 bits, treated as a signed number, | |
574 | is negative. */ | |
575 | /* FIXME: R_PPC64_PLTGOT16_HA not implemented. */ | |
46807bf4 AM |
576 | HOW (R_PPC64_PLTGOT16_HA, 1, 16, 0xffff, 16, FALSE, signed, |
577 | ppc64_elf_unhandled_reloc), | |
411e1bfb AM |
578 | |
579 | /* Like R_PPC64_ADDR16, but for instructions with a DS field. */ | |
46807bf4 AM |
580 | HOW (R_PPC64_ADDR16_DS, 1, 16, 0xfffc, 0, FALSE, signed, |
581 | bfd_elf_generic_reloc), | |
411e1bfb AM |
582 | |
583 | /* Like R_PPC64_ADDR16_LO, but for instructions with a DS field. */ | |
46807bf4 AM |
584 | HOW (R_PPC64_ADDR16_LO_DS, 1, 16, 0xfffc, 0, FALSE, dont, |
585 | bfd_elf_generic_reloc), | |
411e1bfb AM |
586 | |
587 | /* Like R_PPC64_GOT16, but for instructions with a DS field. */ | |
46807bf4 AM |
588 | HOW (R_PPC64_GOT16_DS, 1, 16, 0xfffc, 0, FALSE, signed, |
589 | ppc64_elf_unhandled_reloc), | |
411e1bfb AM |
590 | |
591 | /* Like R_PPC64_GOT16_LO, but for instructions with a DS field. */ | |
46807bf4 AM |
592 | HOW (R_PPC64_GOT16_LO_DS, 1, 16, 0xfffc, 0, FALSE, dont, |
593 | ppc64_elf_unhandled_reloc), | |
411e1bfb AM |
594 | |
595 | /* Like R_PPC64_PLT16_LO, but for instructions with a DS field. */ | |
46807bf4 AM |
596 | HOW (R_PPC64_PLT16_LO_DS, 1, 16, 0xfffc, 0, FALSE, dont, |
597 | ppc64_elf_unhandled_reloc), | |
411e1bfb AM |
598 | |
599 | /* Like R_PPC64_SECTOFF, but for instructions with a DS field. */ | |
46807bf4 AM |
600 | HOW (R_PPC64_SECTOFF_DS, 1, 16, 0xfffc, 0, FALSE, signed, |
601 | ppc64_elf_sectoff_reloc), | |
411e1bfb AM |
602 | |
603 | /* Like R_PPC64_SECTOFF_LO, but for instructions with a DS field. */ | |
46807bf4 AM |
604 | HOW (R_PPC64_SECTOFF_LO_DS, 1, 16, 0xfffc, 0, FALSE, dont, |
605 | ppc64_elf_sectoff_reloc), | |
411e1bfb AM |
606 | |
607 | /* Like R_PPC64_TOC16, but for instructions with a DS field. */ | |
46807bf4 AM |
608 | HOW (R_PPC64_TOC16_DS, 1, 16, 0xfffc, 0, FALSE, signed, |
609 | ppc64_elf_toc_reloc), | |
411e1bfb AM |
610 | |
611 | /* Like R_PPC64_TOC16_LO, but for instructions with a DS field. */ | |
46807bf4 AM |
612 | HOW (R_PPC64_TOC16_LO_DS, 1, 16, 0xfffc, 0, FALSE, dont, |
613 | ppc64_elf_toc_reloc), | |
411e1bfb AM |
614 | |
615 | /* Like R_PPC64_PLTGOT16, but for instructions with a DS field. */ | |
616 | /* FIXME: R_PPC64_PLTGOT16_DS not implemented. */ | |
46807bf4 AM |
617 | HOW (R_PPC64_PLTGOT16_DS, 1, 16, 0xfffc, 0, FALSE, signed, |
618 | ppc64_elf_unhandled_reloc), | |
411e1bfb AM |
619 | |
620 | /* Like R_PPC64_PLTGOT16_LO, but for instructions with a DS field. */ | |
621 | /* FIXME: R_PPC64_PLTGOT16_LO not implemented. */ | |
46807bf4 AM |
622 | HOW (R_PPC64_PLTGOT16_LO_DS, 1, 16, 0xfffc, 0, FALSE, dont, |
623 | ppc64_elf_unhandled_reloc), | |
411e1bfb | 624 | |
727fc41e | 625 | /* Marker relocs for TLS. */ |
46807bf4 AM |
626 | HOW (R_PPC64_TLS, 2, 32, 0, 0, FALSE, dont, |
627 | bfd_elf_generic_reloc), | |
628 | ||
629 | HOW (R_PPC64_TLSGD, 2, 32, 0, 0, FALSE, dont, | |
630 | bfd_elf_generic_reloc), | |
631 | ||
632 | HOW (R_PPC64_TLSLD, 2, 32, 0, 0, FALSE, dont, | |
633 | bfd_elf_generic_reloc), | |
727fc41e | 634 | |
23cedd1d AM |
635 | /* Marker reloc for optimizing r2 save in prologue rather than on |
636 | each plt call stub. */ | |
46807bf4 AM |
637 | HOW (R_PPC64_TOCSAVE, 2, 32, 0, 0, FALSE, dont, |
638 | bfd_elf_generic_reloc), | |
3b421ab3 | 639 | |
23cedd1d | 640 | /* Marker relocs on inline plt call instructions. */ |
46807bf4 AM |
641 | HOW (R_PPC64_PLTSEQ, 2, 32, 0, 0, FALSE, dont, |
642 | bfd_elf_generic_reloc), | |
643 | ||
644 | HOW (R_PPC64_PLTCALL, 2, 32, 0, 0, FALSE, dont, | |
645 | bfd_elf_generic_reloc), | |
23cedd1d | 646 | |
411e1bfb AM |
647 | /* Computes the load module index of the load module that contains the |
648 | definition of its TLS sym. */ | |
46807bf4 AM |
649 | HOW (R_PPC64_DTPMOD64, 4, 64, 0xffffffffffffffffULL, 0, FALSE, dont, |
650 | ppc64_elf_unhandled_reloc), | |
411e1bfb AM |
651 | |
652 | /* Computes a dtv-relative displacement, the difference between the value | |
653 | of sym+add and the base address of the thread-local storage block that | |
654 | contains the definition of sym, minus 0x8000. */ | |
46807bf4 AM |
655 | HOW (R_PPC64_DTPREL64, 4, 64, 0xffffffffffffffffULL, 0, FALSE, dont, |
656 | ppc64_elf_unhandled_reloc), | |
411e1bfb AM |
657 | |
658 | /* A 16 bit dtprel reloc. */ | |
46807bf4 AM |
659 | HOW (R_PPC64_DTPREL16, 1, 16, 0xffff, 0, FALSE, signed, |
660 | ppc64_elf_unhandled_reloc), | |
411e1bfb AM |
661 | |
662 | /* Like DTPREL16, but no overflow. */ | |
46807bf4 AM |
663 | HOW (R_PPC64_DTPREL16_LO, 1, 16, 0xffff, 0, FALSE, dont, |
664 | ppc64_elf_unhandled_reloc), | |
411e1bfb AM |
665 | |
666 | /* Like DTPREL16_LO, but next higher group of 16 bits. */ | |
46807bf4 AM |
667 | HOW (R_PPC64_DTPREL16_HI, 1, 16, 0xffff, 16, FALSE, signed, |
668 | ppc64_elf_unhandled_reloc), | |
411e1bfb AM |
669 | |
670 | /* Like DTPREL16_HI, but adjust for low 16 bits. */ | |
46807bf4 AM |
671 | HOW (R_PPC64_DTPREL16_HA, 1, 16, 0xffff, 16, FALSE, signed, |
672 | ppc64_elf_unhandled_reloc), | |
411e1bfb AM |
673 | |
674 | /* Like DTPREL16_HI, but next higher group of 16 bits. */ | |
46807bf4 AM |
675 | HOW (R_PPC64_DTPREL16_HIGHER, 1, 16, 0xffff, 32, FALSE, dont, |
676 | ppc64_elf_unhandled_reloc), | |
411e1bfb AM |
677 | |
678 | /* Like DTPREL16_HIGHER, but adjust for low 16 bits. */ | |
46807bf4 AM |
679 | HOW (R_PPC64_DTPREL16_HIGHERA, 1, 16, 0xffff, 32, FALSE, dont, |
680 | ppc64_elf_unhandled_reloc), | |
411e1bfb AM |
681 | |
682 | /* Like DTPREL16_HIGHER, but next higher group of 16 bits. */ | |
46807bf4 AM |
683 | HOW (R_PPC64_DTPREL16_HIGHEST, 1, 16, 0xffff, 48, FALSE, dont, |
684 | ppc64_elf_unhandled_reloc), | |
411e1bfb AM |
685 | |
686 | /* Like DTPREL16_HIGHEST, but adjust for low 16 bits. */ | |
46807bf4 AM |
687 | HOW (R_PPC64_DTPREL16_HIGHESTA, 1, 16, 0xffff, 48, FALSE, dont, |
688 | ppc64_elf_unhandled_reloc), | |
411e1bfb AM |
689 | |
690 | /* Like DTPREL16, but for insns with a DS field. */ | |
46807bf4 AM |
691 | HOW (R_PPC64_DTPREL16_DS, 1, 16, 0xfffc, 0, FALSE, signed, |
692 | ppc64_elf_unhandled_reloc), | |
411e1bfb AM |
693 | |
694 | /* Like DTPREL16_DS, but no overflow. */ | |
46807bf4 AM |
695 | HOW (R_PPC64_DTPREL16_LO_DS, 1, 16, 0xfffc, 0, FALSE, dont, |
696 | ppc64_elf_unhandled_reloc), | |
411e1bfb AM |
697 | |
698 | /* Computes a tp-relative displacement, the difference between the value of | |
699 | sym+add and the value of the thread pointer (r13). */ | |
46807bf4 AM |
700 | HOW (R_PPC64_TPREL64, 4, 64, 0xffffffffffffffffULL, 0, FALSE, dont, |
701 | ppc64_elf_unhandled_reloc), | |
411e1bfb AM |
702 | |
703 | /* A 16 bit tprel reloc. */ | |
46807bf4 AM |
704 | HOW (R_PPC64_TPREL16, 1, 16, 0xffff, 0, FALSE, signed, |
705 | ppc64_elf_unhandled_reloc), | |
411e1bfb AM |
706 | |
707 | /* Like TPREL16, but no overflow. */ | |
46807bf4 AM |
708 | HOW (R_PPC64_TPREL16_LO, 1, 16, 0xffff, 0, FALSE, dont, |
709 | ppc64_elf_unhandled_reloc), | |
411e1bfb AM |
710 | |
711 | /* Like TPREL16_LO, but next higher group of 16 bits. */ | |
46807bf4 AM |
712 | HOW (R_PPC64_TPREL16_HI, 1, 16, 0xffff, 16, FALSE, signed, |
713 | ppc64_elf_unhandled_reloc), | |
411e1bfb AM |
714 | |
715 | /* Like TPREL16_HI, but adjust for low 16 bits. */ | |
46807bf4 AM |
716 | HOW (R_PPC64_TPREL16_HA, 1, 16, 0xffff, 16, FALSE, signed, |
717 | ppc64_elf_unhandled_reloc), | |
411e1bfb AM |
718 | |
719 | /* Like TPREL16_HI, but next higher group of 16 bits. */ | |
46807bf4 AM |
720 | HOW (R_PPC64_TPREL16_HIGHER, 1, 16, 0xffff, 32, FALSE, dont, |
721 | ppc64_elf_unhandled_reloc), | |
411e1bfb AM |
722 | |
723 | /* Like TPREL16_HIGHER, but adjust for low 16 bits. */ | |
46807bf4 AM |
724 | HOW (R_PPC64_TPREL16_HIGHERA, 1, 16, 0xffff, 32, FALSE, dont, |
725 | ppc64_elf_unhandled_reloc), | |
411e1bfb AM |
726 | |
727 | /* Like TPREL16_HIGHER, but next higher group of 16 bits. */ | |
46807bf4 AM |
728 | HOW (R_PPC64_TPREL16_HIGHEST, 1, 16, 0xffff, 48, FALSE, dont, |
729 | ppc64_elf_unhandled_reloc), | |
411e1bfb AM |
730 | |
731 | /* Like TPREL16_HIGHEST, but adjust for low 16 bits. */ | |
46807bf4 AM |
732 | HOW (R_PPC64_TPREL16_HIGHESTA, 1, 16, 0xffff, 48, FALSE, dont, |
733 | ppc64_elf_unhandled_reloc), | |
411e1bfb AM |
734 | |
735 | /* Like TPREL16, but for insns with a DS field. */ | |
46807bf4 AM |
736 | HOW (R_PPC64_TPREL16_DS, 1, 16, 0xfffc, 0, FALSE, signed, |
737 | ppc64_elf_unhandled_reloc), | |
411e1bfb AM |
738 | |
739 | /* Like TPREL16_DS, but no overflow. */ | |
46807bf4 AM |
740 | HOW (R_PPC64_TPREL16_LO_DS, 1, 16, 0xfffc, 0, FALSE, dont, |
741 | ppc64_elf_unhandled_reloc), | |
411e1bfb AM |
742 | |
743 | /* Allocates two contiguous entries in the GOT to hold a tls_index structure, | |
744 | with values (sym+add)@dtpmod and (sym+add)@dtprel, and computes the offset | |
745 | to the first entry relative to the TOC base (r2). */ | |
46807bf4 AM |
746 | HOW (R_PPC64_GOT_TLSGD16, 1, 16, 0xffff, 0, FALSE, signed, |
747 | ppc64_elf_unhandled_reloc), | |
5bd4f169 | 748 | |
411e1bfb | 749 | /* Like GOT_TLSGD16, but no overflow. */ |
46807bf4 AM |
750 | HOW (R_PPC64_GOT_TLSGD16_LO, 1, 16, 0xffff, 0, FALSE, dont, |
751 | ppc64_elf_unhandled_reloc), | |
5bd4f169 | 752 | |
411e1bfb | 753 | /* Like GOT_TLSGD16_LO, but next higher group of 16 bits. */ |
46807bf4 AM |
754 | HOW (R_PPC64_GOT_TLSGD16_HI, 1, 16, 0xffff, 16, FALSE, signed, |
755 | ppc64_elf_unhandled_reloc), | |
5bd4f169 | 756 | |
411e1bfb | 757 | /* Like GOT_TLSGD16_HI, but adjust for low 16 bits. */ |
46807bf4 AM |
758 | HOW (R_PPC64_GOT_TLSGD16_HA, 1, 16, 0xffff, 16, FALSE, signed, |
759 | ppc64_elf_unhandled_reloc), | |
5bd4f169 | 760 | |
411e1bfb AM |
761 | /* Allocates two contiguous entries in the GOT to hold a tls_index structure, |
762 | with values (sym+add)@dtpmod and zero, and computes the offset to the | |
763 | first entry relative to the TOC base (r2). */ | |
46807bf4 AM |
764 | HOW (R_PPC64_GOT_TLSLD16, 1, 16, 0xffff, 0, FALSE, signed, |
765 | ppc64_elf_unhandled_reloc), | |
5bd4f169 | 766 | |
411e1bfb | 767 | /* Like GOT_TLSLD16, but no overflow. */ |
46807bf4 AM |
768 | HOW (R_PPC64_GOT_TLSLD16_LO, 1, 16, 0xffff, 0, FALSE, dont, |
769 | ppc64_elf_unhandled_reloc), | |
5bd4f169 | 770 | |
411e1bfb | 771 | /* Like GOT_TLSLD16_LO, but next higher group of 16 bits. */ |
46807bf4 AM |
772 | HOW (R_PPC64_GOT_TLSLD16_HI, 1, 16, 0xffff, 16, FALSE, signed, |
773 | ppc64_elf_unhandled_reloc), | |
5bd4f169 | 774 | |
411e1bfb | 775 | /* Like GOT_TLSLD16_HI, but adjust for low 16 bits. */ |
46807bf4 AM |
776 | HOW (R_PPC64_GOT_TLSLD16_HA, 1, 16, 0xffff, 16, FALSE, signed, |
777 | ppc64_elf_unhandled_reloc), | |
5bd4f169 | 778 | |
411e1bfb AM |
779 | /* Allocates an entry in the GOT with value (sym+add)@dtprel, and computes |
780 | the offset to the entry relative to the TOC base (r2). */ | |
46807bf4 AM |
781 | HOW (R_PPC64_GOT_DTPREL16_DS, 1, 16, 0xfffc, 0, FALSE, signed, |
782 | ppc64_elf_unhandled_reloc), | |
5bd4f169 | 783 | |
411e1bfb | 784 | /* Like GOT_DTPREL16_DS, but no overflow. */ |
46807bf4 AM |
785 | HOW (R_PPC64_GOT_DTPREL16_LO_DS, 1, 16, 0xfffc, 0, FALSE, dont, |
786 | ppc64_elf_unhandled_reloc), | |
5bd4f169 | 787 | |
411e1bfb | 788 | /* Like GOT_DTPREL16_LO_DS, but next higher group of 16 bits. */ |
46807bf4 AM |
789 | HOW (R_PPC64_GOT_DTPREL16_HI, 1, 16, 0xffff, 16, FALSE, signed, |
790 | ppc64_elf_unhandled_reloc), | |
5bd4f169 | 791 | |
411e1bfb | 792 | /* Like GOT_DTPREL16_HI, but adjust for low 16 bits. */ |
46807bf4 AM |
793 | HOW (R_PPC64_GOT_DTPREL16_HA, 1, 16, 0xffff, 16, FALSE, signed, |
794 | ppc64_elf_unhandled_reloc), | |
411e1bfb AM |
795 | |
796 | /* Allocates an entry in the GOT with value (sym+add)@tprel, and computes the | |
797 | offset to the entry relative to the TOC base (r2). */ | |
46807bf4 AM |
798 | HOW (R_PPC64_GOT_TPREL16_DS, 1, 16, 0xfffc, 0, FALSE, signed, |
799 | ppc64_elf_unhandled_reloc), | |
5bd4f169 | 800 | |
411e1bfb | 801 | /* Like GOT_TPREL16_DS, but no overflow. */ |
46807bf4 AM |
802 | HOW (R_PPC64_GOT_TPREL16_LO_DS, 1, 16, 0xfffc, 0, FALSE, dont, |
803 | ppc64_elf_unhandled_reloc), | |
5bd4f169 | 804 | |
411e1bfb | 805 | /* Like GOT_TPREL16_LO_DS, but next higher group of 16 bits. */ |
46807bf4 AM |
806 | HOW (R_PPC64_GOT_TPREL16_HI, 1, 16, 0xffff, 16, FALSE, signed, |
807 | ppc64_elf_unhandled_reloc), | |
5bd4f169 | 808 | |
411e1bfb | 809 | /* Like GOT_TPREL16_HI, but adjust for low 16 bits. */ |
46807bf4 AM |
810 | HOW (R_PPC64_GOT_TPREL16_HA, 1, 16, 0xffff, 16, FALSE, signed, |
811 | ppc64_elf_unhandled_reloc), | |
812 | ||
813 | HOW (R_PPC64_JMP_IREL, 0, 0, 0, 0, FALSE, dont, | |
814 | ppc64_elf_unhandled_reloc), | |
815 | ||
816 | HOW (R_PPC64_IRELATIVE, 4, 64, 0xffffffffffffffffULL, 0, FALSE, dont, | |
817 | bfd_elf_generic_reloc), | |
e054468f | 818 | |
25f23106 | 819 | /* A 16 bit relative relocation. */ |
46807bf4 AM |
820 | HOW (R_PPC64_REL16, 1, 16, 0xffff, 0, TRUE, signed, |
821 | bfd_elf_generic_reloc), | |
25f23106 AM |
822 | |
823 | /* A 16 bit relative relocation without overflow. */ | |
46807bf4 AM |
824 | HOW (R_PPC64_REL16_LO, 1, 16, 0xffff, 0, TRUE, dont, |
825 | bfd_elf_generic_reloc), | |
25f23106 AM |
826 | |
827 | /* The high order 16 bits of a relative address. */ | |
46807bf4 AM |
828 | HOW (R_PPC64_REL16_HI, 1, 16, 0xffff, 16, TRUE, signed, |
829 | bfd_elf_generic_reloc), | |
25f23106 AM |
830 | |
831 | /* The high order 16 bits of a relative address, plus 1 if the contents of | |
832 | the low 16 bits, treated as a signed number, is negative. */ | |
46807bf4 AM |
833 | HOW (R_PPC64_REL16_HA, 1, 16, 0xffff, 16, TRUE, signed, |
834 | ppc64_elf_ha_reloc), | |
25f23106 | 835 | |
4a969973 AM |
836 | HOW (R_PPC64_REL16_HIGH, 1, 16, 0xffff, 16, TRUE, dont, |
837 | bfd_elf_generic_reloc), | |
838 | ||
839 | HOW (R_PPC64_REL16_HIGHA, 1, 16, 0xffff, 16, TRUE, dont, | |
840 | ppc64_elf_ha_reloc), | |
841 | ||
842 | HOW (R_PPC64_REL16_HIGHER, 1, 16, 0xffff, 32, TRUE, dont, | |
843 | bfd_elf_generic_reloc), | |
844 | ||
845 | HOW (R_PPC64_REL16_HIGHERA, 1, 16, 0xffff, 32, TRUE, dont, | |
846 | ppc64_elf_ha_reloc), | |
847 | ||
848 | HOW (R_PPC64_REL16_HIGHEST, 1, 16, 0xffff, 48, TRUE, dont, | |
849 | bfd_elf_generic_reloc), | |
850 | ||
851 | HOW (R_PPC64_REL16_HIGHESTA, 1, 16, 0xffff, 48, TRUE, dont, | |
852 | ppc64_elf_ha_reloc), | |
853 | ||
a680de9a | 854 | /* Like R_PPC64_REL16_HA but for split field in addpcis. */ |
46807bf4 AM |
855 | HOW (R_PPC64_REL16DX_HA, 2, 16, 0x1fffc1, 16, TRUE, signed, |
856 | ppc64_elf_ha_reloc), | |
a680de9a | 857 | |
7ba71655 | 858 | /* A split-field reloc for addpcis, non-relative (gas internal use only). */ |
46807bf4 AM |
859 | HOW (R_PPC64_16DX_HA, 2, 16, 0x1fffc1, 16, FALSE, signed, |
860 | ppc64_elf_ha_reloc), | |
7ba71655 | 861 | |
f9c6b907 | 862 | /* Like R_PPC64_ADDR16_HI, but no overflow. */ |
46807bf4 AM |
863 | HOW (R_PPC64_ADDR16_HIGH, 1, 16, 0xffff, 16, FALSE, dont, |
864 | bfd_elf_generic_reloc), | |
f9c6b907 AM |
865 | |
866 | /* Like R_PPC64_ADDR16_HA, but no overflow. */ | |
46807bf4 AM |
867 | HOW (R_PPC64_ADDR16_HIGHA, 1, 16, 0xffff, 16, FALSE, dont, |
868 | ppc64_elf_ha_reloc), | |
f9c6b907 AM |
869 | |
870 | /* Like R_PPC64_DTPREL16_HI, but no overflow. */ | |
46807bf4 AM |
871 | HOW (R_PPC64_DTPREL16_HIGH, 1, 16, 0xffff, 16, FALSE, dont, |
872 | ppc64_elf_unhandled_reloc), | |
f9c6b907 AM |
873 | |
874 | /* Like R_PPC64_DTPREL16_HA, but no overflow. */ | |
46807bf4 AM |
875 | HOW (R_PPC64_DTPREL16_HIGHA, 1, 16, 0xffff, 16, FALSE, dont, |
876 | ppc64_elf_unhandled_reloc), | |
f9c6b907 AM |
877 | |
878 | /* Like R_PPC64_TPREL16_HI, but no overflow. */ | |
46807bf4 AM |
879 | HOW (R_PPC64_TPREL16_HIGH, 1, 16, 0xffff, 16, FALSE, dont, |
880 | ppc64_elf_unhandled_reloc), | |
f9c6b907 AM |
881 | |
882 | /* Like R_PPC64_TPREL16_HA, but no overflow. */ | |
46807bf4 AM |
883 | HOW (R_PPC64_TPREL16_HIGHA, 1, 16, 0xffff, 16, FALSE, dont, |
884 | ppc64_elf_unhandled_reloc), | |
f9c6b907 | 885 | |
006589cf | 886 | /* Marker reloc on ELFv2 large-model function entry. */ |
46807bf4 AM |
887 | HOW (R_PPC64_ENTRY, 2, 32, 0, 0, FALSE, dont, |
888 | bfd_elf_generic_reloc), | |
006589cf | 889 | |
45965137 | 890 | /* Like ADDR64, but use local entry point of function. */ |
46807bf4 AM |
891 | HOW (R_PPC64_ADDR64_LOCAL, 4, 64, 0xffffffffffffffffULL, 0, FALSE, dont, |
892 | bfd_elf_generic_reloc), | |
45965137 | 893 | |
5663e321 AM |
894 | HOW (R_PPC64_PLTSEQ_NOTOC, 2, 32, 0, 0, FALSE, dont, |
895 | bfd_elf_generic_reloc), | |
896 | ||
897 | HOW (R_PPC64_PLTCALL_NOTOC, 2, 32, 0, 0, FALSE, dont, | |
898 | bfd_elf_generic_reloc), | |
899 | ||
900 | HOW (R_PPC64_PCREL_OPT, 2, 32, 0, 0, FALSE, dont, | |
901 | bfd_elf_generic_reloc), | |
902 | ||
903 | HOW (R_PPC64_D34, 4, 34, 0x3ffff0000ffffULL, 0, FALSE, signed, | |
904 | ppc64_elf_prefix_reloc), | |
905 | ||
906 | HOW (R_PPC64_D34_LO, 4, 34, 0x3ffff0000ffffULL, 0, FALSE, dont, | |
907 | ppc64_elf_prefix_reloc), | |
908 | ||
909 | HOW (R_PPC64_D34_HI30, 4, 34, 0x3ffff0000ffffULL, 34, FALSE, dont, | |
910 | ppc64_elf_prefix_reloc), | |
911 | ||
912 | HOW (R_PPC64_D34_HA30, 4, 34, 0x3ffff0000ffffULL, 34, FALSE, dont, | |
913 | ppc64_elf_prefix_reloc), | |
914 | ||
915 | HOW (R_PPC64_PCREL34, 4, 34, 0x3ffff0000ffffULL, 0, TRUE, signed, | |
916 | ppc64_elf_prefix_reloc), | |
917 | ||
918 | HOW (R_PPC64_GOT_PCREL34, 4, 34, 0x3ffff0000ffffULL, 0, TRUE, signed, | |
919 | ppc64_elf_unhandled_reloc), | |
920 | ||
921 | HOW (R_PPC64_PLT_PCREL34, 4, 34, 0x3ffff0000ffffULL, 0, TRUE, signed, | |
922 | ppc64_elf_unhandled_reloc), | |
923 | ||
924 | HOW (R_PPC64_PLT_PCREL34_NOTOC, 4, 34, 0x3ffff0000ffffULL, 0, TRUE, signed, | |
925 | ppc64_elf_unhandled_reloc), | |
926 | ||
c213164a AM |
927 | HOW (R_PPC64_TPREL34, 4, 34, 0x3ffff0000ffffULL, 0, FALSE, signed, |
928 | ppc64_elf_unhandled_reloc), | |
929 | ||
930 | HOW (R_PPC64_DTPREL34, 4, 34, 0x3ffff0000ffffULL, 0, FALSE, signed, | |
931 | ppc64_elf_unhandled_reloc), | |
932 | ||
87c69f97 | 933 | HOW (R_PPC64_GOT_TLSGD_PCREL34, 4, 34, 0x3ffff0000ffffULL, 0, TRUE, signed, |
c213164a AM |
934 | ppc64_elf_unhandled_reloc), |
935 | ||
87c69f97 | 936 | HOW (R_PPC64_GOT_TLSLD_PCREL34, 4, 34, 0x3ffff0000ffffULL, 0, TRUE, signed, |
c213164a AM |
937 | ppc64_elf_unhandled_reloc), |
938 | ||
87c69f97 | 939 | HOW (R_PPC64_GOT_TPREL_PCREL34, 4, 34, 0x3ffff0000ffffULL, 0, TRUE, signed, |
c213164a AM |
940 | ppc64_elf_unhandled_reloc), |
941 | ||
87c69f97 | 942 | HOW (R_PPC64_GOT_DTPREL_PCREL34, 4, 34, 0x3ffff0000ffffULL, 0, TRUE, signed, |
c213164a AM |
943 | ppc64_elf_unhandled_reloc), |
944 | ||
5663e321 AM |
945 | HOW (R_PPC64_ADDR16_HIGHER34, 1, 16, 0xffff, 34, FALSE, dont, |
946 | bfd_elf_generic_reloc), | |
947 | ||
948 | HOW (R_PPC64_ADDR16_HIGHERA34, 1, 16, 0xffff, 34, FALSE, dont, | |
949 | ppc64_elf_ha_reloc), | |
950 | ||
951 | HOW (R_PPC64_ADDR16_HIGHEST34, 1, 16, 0xffff, 50, FALSE, dont, | |
952 | bfd_elf_generic_reloc), | |
953 | ||
954 | HOW (R_PPC64_ADDR16_HIGHESTA34, 1, 16, 0xffff, 50, FALSE, dont, | |
955 | ppc64_elf_ha_reloc), | |
956 | ||
957 | HOW (R_PPC64_REL16_HIGHER34, 1, 16, 0xffff, 34, TRUE, dont, | |
958 | bfd_elf_generic_reloc), | |
959 | ||
960 | HOW (R_PPC64_REL16_HIGHERA34, 1, 16, 0xffff, 34, TRUE, dont, | |
961 | ppc64_elf_ha_reloc), | |
962 | ||
963 | HOW (R_PPC64_REL16_HIGHEST34, 1, 16, 0xffff, 50, TRUE, dont, | |
964 | bfd_elf_generic_reloc), | |
965 | ||
966 | HOW (R_PPC64_REL16_HIGHESTA34, 1, 16, 0xffff, 50, TRUE, dont, | |
967 | ppc64_elf_ha_reloc), | |
968 | ||
969 | HOW (R_PPC64_D28, 4, 28, 0xfff0000ffffULL, 0, FALSE, signed, | |
970 | ppc64_elf_prefix_reloc), | |
971 | ||
972 | HOW (R_PPC64_PCREL28, 4, 28, 0xfff0000ffffULL, 0, TRUE, signed, | |
973 | ppc64_elf_prefix_reloc), | |
974 | ||
5bd4f169 | 975 | /* GNU extension to record C++ vtable hierarchy. */ |
46807bf4 AM |
976 | HOW (R_PPC64_GNU_VTINHERIT, 0, 0, 0, 0, FALSE, dont, |
977 | NULL), | |
5bd4f169 AM |
978 | |
979 | /* GNU extension to record C++ vtable member usage. */ | |
46807bf4 AM |
980 | HOW (R_PPC64_GNU_VTENTRY, 0, 0, 0, 0, FALSE, dont, |
981 | NULL), | |
5bd4f169 AM |
982 | }; |
983 | ||
984 | \f | |
985 | /* Initialize the ppc64_elf_howto_table, so that linear accesses can | |
986 | be done. */ | |
987 | ||
988 | static void | |
4ce794b7 | 989 | ppc_howto_init (void) |
5bd4f169 AM |
990 | { |
991 | unsigned int i, type; | |
992 | ||
a4b6fadd | 993 | for (i = 0; i < ARRAY_SIZE (ppc64_elf_howto_raw); i++) |
5bd4f169 AM |
994 | { |
995 | type = ppc64_elf_howto_raw[i].type; | |
a4b6fadd | 996 | BFD_ASSERT (type < ARRAY_SIZE (ppc64_elf_howto_table)); |
5bd4f169 AM |
997 | ppc64_elf_howto_table[type] = &ppc64_elf_howto_raw[i]; |
998 | } | |
999 | } | |
1000 | ||
1001 | static reloc_howto_type * | |
87c69f97 | 1002 | ppc64_elf_reloc_type_lookup (bfd *abfd, bfd_reloc_code_real_type code) |
5bd4f169 | 1003 | { |
411e1bfb | 1004 | enum elf_ppc64_reloc_type r = R_PPC64_NONE; |
5bd4f169 AM |
1005 | |
1006 | if (!ppc64_elf_howto_table[R_PPC64_ADDR32]) | |
1007 | /* Initialize howto table if needed. */ | |
1008 | ppc_howto_init (); | |
1009 | ||
4ce794b7 | 1010 | switch (code) |
5bd4f169 AM |
1011 | { |
1012 | default: | |
f3185997 | 1013 | /* xgettext:c-format */ |
2cdcc330 AM |
1014 | _bfd_error_handler (_("%pB: unsupported relocation type %#x"), abfd, |
1015 | (int) code); | |
f3185997 | 1016 | bfd_set_error (bfd_error_bad_value); |
4ce794b7 | 1017 | return NULL; |
5bd4f169 | 1018 | |
411e1bfb AM |
1019 | case BFD_RELOC_NONE: r = R_PPC64_NONE; |
1020 | break; | |
1021 | case BFD_RELOC_32: r = R_PPC64_ADDR32; | |
1022 | break; | |
1023 | case BFD_RELOC_PPC_BA26: r = R_PPC64_ADDR24; | |
1024 | break; | |
1025 | case BFD_RELOC_16: r = R_PPC64_ADDR16; | |
1026 | break; | |
1027 | case BFD_RELOC_LO16: r = R_PPC64_ADDR16_LO; | |
1028 | break; | |
1029 | case BFD_RELOC_HI16: r = R_PPC64_ADDR16_HI; | |
1030 | break; | |
f9c6b907 AM |
1031 | case BFD_RELOC_PPC64_ADDR16_HIGH: r = R_PPC64_ADDR16_HIGH; |
1032 | break; | |
411e1bfb | 1033 | case BFD_RELOC_HI16_S: r = R_PPC64_ADDR16_HA; |
5bd4f169 | 1034 | break; |
f9c6b907 AM |
1035 | case BFD_RELOC_PPC64_ADDR16_HIGHA: r = R_PPC64_ADDR16_HIGHA; |
1036 | break; | |
411e1bfb | 1037 | case BFD_RELOC_PPC_BA16: r = R_PPC64_ADDR14; |
5bd4f169 | 1038 | break; |
411e1bfb | 1039 | case BFD_RELOC_PPC_BA16_BRTAKEN: r = R_PPC64_ADDR14_BRTAKEN; |
5bd4f169 | 1040 | break; |
411e1bfb | 1041 | case BFD_RELOC_PPC_BA16_BRNTAKEN: r = R_PPC64_ADDR14_BRNTAKEN; |
5bd4f169 | 1042 | break; |
411e1bfb | 1043 | case BFD_RELOC_PPC_B26: r = R_PPC64_REL24; |
5bd4f169 | 1044 | break; |
05d0e962 AM |
1045 | case BFD_RELOC_PPC64_REL24_NOTOC: r = R_PPC64_REL24_NOTOC; |
1046 | break; | |
411e1bfb | 1047 | case BFD_RELOC_PPC_B16: r = R_PPC64_REL14; |
5bd4f169 | 1048 | break; |
411e1bfb | 1049 | case BFD_RELOC_PPC_B16_BRTAKEN: r = R_PPC64_REL14_BRTAKEN; |
5bd4f169 | 1050 | break; |
411e1bfb | 1051 | case BFD_RELOC_PPC_B16_BRNTAKEN: r = R_PPC64_REL14_BRNTAKEN; |
5bd4f169 | 1052 | break; |
411e1bfb | 1053 | case BFD_RELOC_16_GOTOFF: r = R_PPC64_GOT16; |
5bd4f169 | 1054 | break; |
411e1bfb | 1055 | case BFD_RELOC_LO16_GOTOFF: r = R_PPC64_GOT16_LO; |
5bd4f169 | 1056 | break; |
411e1bfb | 1057 | case BFD_RELOC_HI16_GOTOFF: r = R_PPC64_GOT16_HI; |
5bd4f169 | 1058 | break; |
411e1bfb | 1059 | case BFD_RELOC_HI16_S_GOTOFF: r = R_PPC64_GOT16_HA; |
5bd4f169 | 1060 | break; |
411e1bfb | 1061 | case BFD_RELOC_PPC_COPY: r = R_PPC64_COPY; |
5bd4f169 | 1062 | break; |
411e1bfb | 1063 | case BFD_RELOC_PPC_GLOB_DAT: r = R_PPC64_GLOB_DAT; |
5bd4f169 | 1064 | break; |
411e1bfb | 1065 | case BFD_RELOC_32_PCREL: r = R_PPC64_REL32; |
5bd4f169 | 1066 | break; |
411e1bfb | 1067 | case BFD_RELOC_32_PLTOFF: r = R_PPC64_PLT32; |
5bd4f169 | 1068 | break; |
411e1bfb | 1069 | case BFD_RELOC_32_PLT_PCREL: r = R_PPC64_PLTREL32; |
5bd4f169 | 1070 | break; |
411e1bfb | 1071 | case BFD_RELOC_LO16_PLTOFF: r = R_PPC64_PLT16_LO; |
5bd4f169 | 1072 | break; |
411e1bfb | 1073 | case BFD_RELOC_HI16_PLTOFF: r = R_PPC64_PLT16_HI; |
5bd4f169 | 1074 | break; |
411e1bfb | 1075 | case BFD_RELOC_HI16_S_PLTOFF: r = R_PPC64_PLT16_HA; |
5bd4f169 | 1076 | break; |
411e1bfb | 1077 | case BFD_RELOC_16_BASEREL: r = R_PPC64_SECTOFF; |
5bd4f169 | 1078 | break; |
411e1bfb | 1079 | case BFD_RELOC_LO16_BASEREL: r = R_PPC64_SECTOFF_LO; |
5bd4f169 | 1080 | break; |
411e1bfb | 1081 | case BFD_RELOC_HI16_BASEREL: r = R_PPC64_SECTOFF_HI; |
5bd4f169 | 1082 | break; |
411e1bfb | 1083 | case BFD_RELOC_HI16_S_BASEREL: r = R_PPC64_SECTOFF_HA; |
5bd4f169 | 1084 | break; |
411e1bfb | 1085 | case BFD_RELOC_CTOR: r = R_PPC64_ADDR64; |
5bd4f169 | 1086 | break; |
411e1bfb | 1087 | case BFD_RELOC_64: r = R_PPC64_ADDR64; |
5bd4f169 | 1088 | break; |
411e1bfb | 1089 | case BFD_RELOC_PPC64_HIGHER: r = R_PPC64_ADDR16_HIGHER; |
5bd4f169 | 1090 | break; |
411e1bfb | 1091 | case BFD_RELOC_PPC64_HIGHER_S: r = R_PPC64_ADDR16_HIGHERA; |
5bd4f169 | 1092 | break; |
411e1bfb | 1093 | case BFD_RELOC_PPC64_HIGHEST: r = R_PPC64_ADDR16_HIGHEST; |
5bd4f169 | 1094 | break; |
411e1bfb | 1095 | case BFD_RELOC_PPC64_HIGHEST_S: r = R_PPC64_ADDR16_HIGHESTA; |
5bd4f169 | 1096 | break; |
411e1bfb | 1097 | case BFD_RELOC_64_PCREL: r = R_PPC64_REL64; |
5bd4f169 | 1098 | break; |
411e1bfb | 1099 | case BFD_RELOC_64_PLTOFF: r = R_PPC64_PLT64; |
5bd4f169 | 1100 | break; |
411e1bfb | 1101 | case BFD_RELOC_64_PLT_PCREL: r = R_PPC64_PLTREL64; |
5bd4f169 | 1102 | break; |
411e1bfb | 1103 | case BFD_RELOC_PPC_TOC16: r = R_PPC64_TOC16; |
5bd4f169 | 1104 | break; |
411e1bfb | 1105 | case BFD_RELOC_PPC64_TOC16_LO: r = R_PPC64_TOC16_LO; |
5bd4f169 | 1106 | break; |
411e1bfb | 1107 | case BFD_RELOC_PPC64_TOC16_HI: r = R_PPC64_TOC16_HI; |
5bd4f169 | 1108 | break; |
411e1bfb | 1109 | case BFD_RELOC_PPC64_TOC16_HA: r = R_PPC64_TOC16_HA; |
5bd4f169 | 1110 | break; |
411e1bfb | 1111 | case BFD_RELOC_PPC64_TOC: r = R_PPC64_TOC; |
5bd4f169 | 1112 | break; |
411e1bfb | 1113 | case BFD_RELOC_PPC64_PLTGOT16: r = R_PPC64_PLTGOT16; |
5bd4f169 | 1114 | break; |
411e1bfb | 1115 | case BFD_RELOC_PPC64_PLTGOT16_LO: r = R_PPC64_PLTGOT16_LO; |
5bd4f169 | 1116 | break; |
411e1bfb | 1117 | case BFD_RELOC_PPC64_PLTGOT16_HI: r = R_PPC64_PLTGOT16_HI; |
5bd4f169 | 1118 | break; |
411e1bfb | 1119 | case BFD_RELOC_PPC64_PLTGOT16_HA: r = R_PPC64_PLTGOT16_HA; |
5bd4f169 | 1120 | break; |
411e1bfb | 1121 | case BFD_RELOC_PPC64_ADDR16_DS: r = R_PPC64_ADDR16_DS; |
5bd4f169 | 1122 | break; |
411e1bfb | 1123 | case BFD_RELOC_PPC64_ADDR16_LO_DS: r = R_PPC64_ADDR16_LO_DS; |
5bd4f169 | 1124 | break; |
411e1bfb | 1125 | case BFD_RELOC_PPC64_GOT16_DS: r = R_PPC64_GOT16_DS; |
5bd4f169 | 1126 | break; |
411e1bfb | 1127 | case BFD_RELOC_PPC64_GOT16_LO_DS: r = R_PPC64_GOT16_LO_DS; |
5bd4f169 | 1128 | break; |
411e1bfb | 1129 | case BFD_RELOC_PPC64_PLT16_LO_DS: r = R_PPC64_PLT16_LO_DS; |
5bd4f169 | 1130 | break; |
411e1bfb | 1131 | case BFD_RELOC_PPC64_SECTOFF_DS: r = R_PPC64_SECTOFF_DS; |
5bd4f169 | 1132 | break; |
411e1bfb | 1133 | case BFD_RELOC_PPC64_SECTOFF_LO_DS: r = R_PPC64_SECTOFF_LO_DS; |
5bd4f169 | 1134 | break; |
411e1bfb | 1135 | case BFD_RELOC_PPC64_TOC16_DS: r = R_PPC64_TOC16_DS; |
5bd4f169 | 1136 | break; |
411e1bfb | 1137 | case BFD_RELOC_PPC64_TOC16_LO_DS: r = R_PPC64_TOC16_LO_DS; |
5bd4f169 | 1138 | break; |
411e1bfb | 1139 | case BFD_RELOC_PPC64_PLTGOT16_DS: r = R_PPC64_PLTGOT16_DS; |
5bd4f169 | 1140 | break; |
411e1bfb | 1141 | case BFD_RELOC_PPC64_PLTGOT16_LO_DS: r = R_PPC64_PLTGOT16_LO_DS; |
5bd4f169 | 1142 | break; |
c213164a | 1143 | case BFD_RELOC_PPC64_TLS_PCREL: |
411e1bfb | 1144 | case BFD_RELOC_PPC_TLS: r = R_PPC64_TLS; |
5bd4f169 | 1145 | break; |
727fc41e AM |
1146 | case BFD_RELOC_PPC_TLSGD: r = R_PPC64_TLSGD; |
1147 | break; | |
1148 | case BFD_RELOC_PPC_TLSLD: r = R_PPC64_TLSLD; | |
1149 | break; | |
411e1bfb | 1150 | case BFD_RELOC_PPC_DTPMOD: r = R_PPC64_DTPMOD64; |
5bd4f169 | 1151 | break; |
411e1bfb | 1152 | case BFD_RELOC_PPC_TPREL16: r = R_PPC64_TPREL16; |
5bd4f169 | 1153 | break; |
411e1bfb | 1154 | case BFD_RELOC_PPC_TPREL16_LO: r = R_PPC64_TPREL16_LO; |
5bd4f169 | 1155 | break; |
411e1bfb | 1156 | case BFD_RELOC_PPC_TPREL16_HI: r = R_PPC64_TPREL16_HI; |
5bd4f169 | 1157 | break; |
f9c6b907 AM |
1158 | case BFD_RELOC_PPC64_TPREL16_HIGH: r = R_PPC64_TPREL16_HIGH; |
1159 | break; | |
411e1bfb | 1160 | case BFD_RELOC_PPC_TPREL16_HA: r = R_PPC64_TPREL16_HA; |
5bd4f169 | 1161 | break; |
f9c6b907 AM |
1162 | case BFD_RELOC_PPC64_TPREL16_HIGHA: r = R_PPC64_TPREL16_HIGHA; |
1163 | break; | |
411e1bfb | 1164 | case BFD_RELOC_PPC_TPREL: r = R_PPC64_TPREL64; |
5bd4f169 | 1165 | break; |
411e1bfb AM |
1166 | case BFD_RELOC_PPC_DTPREL16: r = R_PPC64_DTPREL16; |
1167 | break; | |
1168 | case BFD_RELOC_PPC_DTPREL16_LO: r = R_PPC64_DTPREL16_LO; | |
1169 | break; | |
1170 | case BFD_RELOC_PPC_DTPREL16_HI: r = R_PPC64_DTPREL16_HI; | |
1171 | break; | |
f9c6b907 AM |
1172 | case BFD_RELOC_PPC64_DTPREL16_HIGH: r = R_PPC64_DTPREL16_HIGH; |
1173 | break; | |
411e1bfb AM |
1174 | case BFD_RELOC_PPC_DTPREL16_HA: r = R_PPC64_DTPREL16_HA; |
1175 | break; | |
f9c6b907 AM |
1176 | case BFD_RELOC_PPC64_DTPREL16_HIGHA: r = R_PPC64_DTPREL16_HIGHA; |
1177 | break; | |
411e1bfb AM |
1178 | case BFD_RELOC_PPC_DTPREL: r = R_PPC64_DTPREL64; |
1179 | break; | |
1180 | case BFD_RELOC_PPC_GOT_TLSGD16: r = R_PPC64_GOT_TLSGD16; | |
1181 | break; | |
1182 | case BFD_RELOC_PPC_GOT_TLSGD16_LO: r = R_PPC64_GOT_TLSGD16_LO; | |
1183 | break; | |
1184 | case BFD_RELOC_PPC_GOT_TLSGD16_HI: r = R_PPC64_GOT_TLSGD16_HI; | |
1185 | break; | |
1186 | case BFD_RELOC_PPC_GOT_TLSGD16_HA: r = R_PPC64_GOT_TLSGD16_HA; | |
1187 | break; | |
1188 | case BFD_RELOC_PPC_GOT_TLSLD16: r = R_PPC64_GOT_TLSLD16; | |
1189 | break; | |
1190 | case BFD_RELOC_PPC_GOT_TLSLD16_LO: r = R_PPC64_GOT_TLSLD16_LO; | |
1191 | break; | |
1192 | case BFD_RELOC_PPC_GOT_TLSLD16_HI: r = R_PPC64_GOT_TLSLD16_HI; | |
1193 | break; | |
1194 | case BFD_RELOC_PPC_GOT_TLSLD16_HA: r = R_PPC64_GOT_TLSLD16_HA; | |
1195 | break; | |
1196 | case BFD_RELOC_PPC_GOT_TPREL16: r = R_PPC64_GOT_TPREL16_DS; | |
1197 | break; | |
1198 | case BFD_RELOC_PPC_GOT_TPREL16_LO: r = R_PPC64_GOT_TPREL16_LO_DS; | |
1199 | break; | |
1200 | case BFD_RELOC_PPC_GOT_TPREL16_HI: r = R_PPC64_GOT_TPREL16_HI; | |
1201 | break; | |
1202 | case BFD_RELOC_PPC_GOT_TPREL16_HA: r = R_PPC64_GOT_TPREL16_HA; | |
1203 | break; | |
1204 | case BFD_RELOC_PPC_GOT_DTPREL16: r = R_PPC64_GOT_DTPREL16_DS; | |
1205 | break; | |
1206 | case BFD_RELOC_PPC_GOT_DTPREL16_LO: r = R_PPC64_GOT_DTPREL16_LO_DS; | |
1207 | break; | |
1208 | case BFD_RELOC_PPC_GOT_DTPREL16_HI: r = R_PPC64_GOT_DTPREL16_HI; | |
1209 | break; | |
1210 | case BFD_RELOC_PPC_GOT_DTPREL16_HA: r = R_PPC64_GOT_DTPREL16_HA; | |
1211 | break; | |
1212 | case BFD_RELOC_PPC64_TPREL16_DS: r = R_PPC64_TPREL16_DS; | |
1213 | break; | |
1214 | case BFD_RELOC_PPC64_TPREL16_LO_DS: r = R_PPC64_TPREL16_LO_DS; | |
1215 | break; | |
1216 | case BFD_RELOC_PPC64_TPREL16_HIGHER: r = R_PPC64_TPREL16_HIGHER; | |
1217 | break; | |
1218 | case BFD_RELOC_PPC64_TPREL16_HIGHERA: r = R_PPC64_TPREL16_HIGHERA; | |
1219 | break; | |
1220 | case BFD_RELOC_PPC64_TPREL16_HIGHEST: r = R_PPC64_TPREL16_HIGHEST; | |
1221 | break; | |
1222 | case BFD_RELOC_PPC64_TPREL16_HIGHESTA: r = R_PPC64_TPREL16_HIGHESTA; | |
1223 | break; | |
1224 | case BFD_RELOC_PPC64_DTPREL16_DS: r = R_PPC64_DTPREL16_DS; | |
1225 | break; | |
1226 | case BFD_RELOC_PPC64_DTPREL16_LO_DS: r = R_PPC64_DTPREL16_LO_DS; | |
1227 | break; | |
1228 | case BFD_RELOC_PPC64_DTPREL16_HIGHER: r = R_PPC64_DTPREL16_HIGHER; | |
1229 | break; | |
1230 | case BFD_RELOC_PPC64_DTPREL16_HIGHERA: r = R_PPC64_DTPREL16_HIGHERA; | |
1231 | break; | |
1232 | case BFD_RELOC_PPC64_DTPREL16_HIGHEST: r = R_PPC64_DTPREL16_HIGHEST; | |
1233 | break; | |
1234 | case BFD_RELOC_PPC64_DTPREL16_HIGHESTA: r = R_PPC64_DTPREL16_HIGHESTA; | |
1235 | break; | |
25f23106 AM |
1236 | case BFD_RELOC_16_PCREL: r = R_PPC64_REL16; |
1237 | break; | |
1238 | case BFD_RELOC_LO16_PCREL: r = R_PPC64_REL16_LO; | |
1239 | break; | |
1240 | case BFD_RELOC_HI16_PCREL: r = R_PPC64_REL16_HI; | |
1241 | break; | |
1242 | case BFD_RELOC_HI16_S_PCREL: r = R_PPC64_REL16_HA; | |
1243 | break; | |
4a969973 AM |
1244 | case BFD_RELOC_PPC64_REL16_HIGH: r = R_PPC64_REL16_HIGH; |
1245 | break; | |
1246 | case BFD_RELOC_PPC64_REL16_HIGHA: r = R_PPC64_REL16_HIGHA; | |
1247 | break; | |
1248 | case BFD_RELOC_PPC64_REL16_HIGHER: r = R_PPC64_REL16_HIGHER; | |
1249 | break; | |
1250 | case BFD_RELOC_PPC64_REL16_HIGHERA: r = R_PPC64_REL16_HIGHERA; | |
1251 | break; | |
1252 | case BFD_RELOC_PPC64_REL16_HIGHEST: r = R_PPC64_REL16_HIGHEST; | |
1253 | break; | |
1254 | case BFD_RELOC_PPC64_REL16_HIGHESTA: r = R_PPC64_REL16_HIGHESTA; | |
1255 | break; | |
7ba71655 AM |
1256 | case BFD_RELOC_PPC_16DX_HA: r = R_PPC64_16DX_HA; |
1257 | break; | |
a680de9a PB |
1258 | case BFD_RELOC_PPC_REL16DX_HA: r = R_PPC64_REL16DX_HA; |
1259 | break; | |
006589cf AM |
1260 | case BFD_RELOC_PPC64_ENTRY: r = R_PPC64_ENTRY; |
1261 | break; | |
45965137 AM |
1262 | case BFD_RELOC_PPC64_ADDR64_LOCAL: r = R_PPC64_ADDR64_LOCAL; |
1263 | break; | |
5663e321 AM |
1264 | case BFD_RELOC_PPC64_D34: r = R_PPC64_D34; |
1265 | break; | |
1266 | case BFD_RELOC_PPC64_D34_LO: r = R_PPC64_D34_LO; | |
1267 | break; | |
1268 | case BFD_RELOC_PPC64_D34_HI30: r = R_PPC64_D34_HI30; | |
1269 | break; | |
1270 | case BFD_RELOC_PPC64_D34_HA30: r = R_PPC64_D34_HA30; | |
1271 | break; | |
1272 | case BFD_RELOC_PPC64_PCREL34: r = R_PPC64_PCREL34; | |
1273 | break; | |
1274 | case BFD_RELOC_PPC64_GOT_PCREL34: r = R_PPC64_GOT_PCREL34; | |
1275 | break; | |
1276 | case BFD_RELOC_PPC64_PLT_PCREL34: r = R_PPC64_PLT_PCREL34; | |
1277 | break; | |
c213164a AM |
1278 | case BFD_RELOC_PPC64_TPREL34: r = R_PPC64_TPREL34; |
1279 | break; | |
1280 | case BFD_RELOC_PPC64_DTPREL34: r = R_PPC64_DTPREL34; | |
1281 | break; | |
87c69f97 | 1282 | case BFD_RELOC_PPC64_GOT_TLSGD_PCREL34: r = R_PPC64_GOT_TLSGD_PCREL34; |
c213164a | 1283 | break; |
87c69f97 | 1284 | case BFD_RELOC_PPC64_GOT_TLSLD_PCREL34: r = R_PPC64_GOT_TLSLD_PCREL34; |
c213164a | 1285 | break; |
87c69f97 | 1286 | case BFD_RELOC_PPC64_GOT_TPREL_PCREL34: r = R_PPC64_GOT_TPREL_PCREL34; |
c213164a | 1287 | break; |
87c69f97 | 1288 | case BFD_RELOC_PPC64_GOT_DTPREL_PCREL34: r = R_PPC64_GOT_DTPREL_PCREL34; |
c213164a | 1289 | break; |
5663e321 AM |
1290 | case BFD_RELOC_PPC64_ADDR16_HIGHER34: r = R_PPC64_ADDR16_HIGHER34; |
1291 | break; | |
1292 | case BFD_RELOC_PPC64_ADDR16_HIGHERA34: r = R_PPC64_ADDR16_HIGHERA34; | |
1293 | break; | |
1294 | case BFD_RELOC_PPC64_ADDR16_HIGHEST34: r = R_PPC64_ADDR16_HIGHEST34; | |
1295 | break; | |
1296 | case BFD_RELOC_PPC64_ADDR16_HIGHESTA34: r = R_PPC64_ADDR16_HIGHESTA34; | |
1297 | break; | |
1298 | case BFD_RELOC_PPC64_REL16_HIGHER34: r = R_PPC64_REL16_HIGHER34; | |
1299 | break; | |
1300 | case BFD_RELOC_PPC64_REL16_HIGHERA34: r = R_PPC64_REL16_HIGHERA34; | |
1301 | break; | |
1302 | case BFD_RELOC_PPC64_REL16_HIGHEST34: r = R_PPC64_REL16_HIGHEST34; | |
1303 | break; | |
1304 | case BFD_RELOC_PPC64_REL16_HIGHESTA34: r = R_PPC64_REL16_HIGHESTA34; | |
1305 | break; | |
1306 | case BFD_RELOC_PPC64_D28: r = R_PPC64_D28; | |
1307 | break; | |
1308 | case BFD_RELOC_PPC64_PCREL28: r = R_PPC64_PCREL28; | |
1309 | break; | |
411e1bfb AM |
1310 | case BFD_RELOC_VTABLE_INHERIT: r = R_PPC64_GNU_VTINHERIT; |
1311 | break; | |
1312 | case BFD_RELOC_VTABLE_ENTRY: r = R_PPC64_GNU_VTENTRY; | |
5bd4f169 AM |
1313 | break; |
1314 | } | |
1315 | ||
4ce794b7 | 1316 | return ppc64_elf_howto_table[r]; |
5bd4f169 AM |
1317 | }; |
1318 | ||
157090f7 | 1319 | static reloc_howto_type * |
87c69f97 | 1320 | ppc64_elf_reloc_name_lookup (bfd *abfd, const char *r_name) |
157090f7 AM |
1321 | { |
1322 | unsigned int i; | |
87c69f97 AM |
1323 | static char *compat_map[][2] = { |
1324 | { "R_PPC64_GOT_TLSGD34", "R_PPC64_GOT_TLSGD_PCREL34" }, | |
1325 | { "R_PPC64_GOT_TLSLD34", "R_PPC64_GOT_TLSLD_PCREL34" }, | |
1326 | { "R_PPC64_GOT_TPREL34", "R_PPC64_GOT_TPREL_PCREL34" }, | |
1327 | { "R_PPC64_GOT_DTPREL34", "R_PPC64_GOT_DTPREL_PCREL34" } | |
1328 | }; | |
157090f7 | 1329 | |
a4b6fadd | 1330 | for (i = 0; i < ARRAY_SIZE (ppc64_elf_howto_raw); i++) |
157090f7 AM |
1331 | if (ppc64_elf_howto_raw[i].name != NULL |
1332 | && strcasecmp (ppc64_elf_howto_raw[i].name, r_name) == 0) | |
1333 | return &ppc64_elf_howto_raw[i]; | |
1334 | ||
87c69f97 AM |
1335 | /* Handle old names of relocations in case they were used by |
1336 | .reloc directives. | |
1337 | FIXME: Remove this soon. Mapping the reloc names is very likely | |
1338 | completely unnecessary. */ | |
1339 | for (i = 0; i < ARRAY_SIZE (compat_map); i++) | |
1340 | if (strcasecmp (compat_map[i][0], r_name) == 0) | |
1341 | { | |
1342 | _bfd_error_handler (_("warning: %s should be used rather than %s"), | |
1343 | compat_map[i][1], compat_map[i][0]); | |
1344 | return ppc64_elf_reloc_name_lookup (abfd, compat_map[i][1]); | |
1345 | } | |
1346 | ||
157090f7 AM |
1347 | return NULL; |
1348 | } | |
1349 | ||
5bd4f169 AM |
1350 | /* Set the howto pointer for a PowerPC ELF reloc. */ |
1351 | ||
f3185997 | 1352 | static bfd_boolean |
4aef7643 | 1353 | ppc64_elf_info_to_howto (bfd *abfd, arelent *cache_ptr, |
4ce794b7 | 1354 | Elf_Internal_Rela *dst) |
5bd4f169 | 1355 | { |
65f38f15 AM |
1356 | unsigned int type; |
1357 | ||
ef60b7ff | 1358 | /* Initialize howto table if needed. */ |
5bd4f169 | 1359 | if (!ppc64_elf_howto_table[R_PPC64_ADDR32]) |
5bd4f169 AM |
1360 | ppc_howto_init (); |
1361 | ||
65f38f15 | 1362 | type = ELF64_R_TYPE (dst->r_info); |
a4b6fadd | 1363 | if (type >= ARRAY_SIZE (ppc64_elf_howto_table)) |
d0fb9a8d | 1364 | { |
695344c0 | 1365 | /* xgettext:c-format */ |
0aa13fee | 1366 | _bfd_error_handler (_("%pB: unsupported relocation type %#x"), |
cf97bcb0 | 1367 | abfd, type); |
f3185997 NC |
1368 | bfd_set_error (bfd_error_bad_value); |
1369 | return FALSE; | |
d0fb9a8d | 1370 | } |
65f38f15 | 1371 | cache_ptr->howto = ppc64_elf_howto_table[type]; |
f3185997 NC |
1372 | if (cache_ptr->howto == NULL || cache_ptr->howto->name == NULL) |
1373 | { | |
1374 | /* xgettext:c-format */ | |
1375 | _bfd_error_handler (_("%pB: unsupported relocation type %#x"), | |
1376 | abfd, type); | |
1377 | bfd_set_error (bfd_error_bad_value); | |
1378 | return FALSE; | |
1379 | } | |
2cdcc330 | 1380 | |
f3185997 | 1381 | return TRUE; |
5bd4f169 AM |
1382 | } |
1383 | ||
04c9666a | 1384 | /* Handle the R_PPC64_ADDR16_HA and similar relocs. */ |
5bd4f169 AM |
1385 | |
1386 | static bfd_reloc_status_type | |
4ce794b7 AM |
1387 | ppc64_elf_ha_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, |
1388 | void *data, asection *input_section, | |
1389 | bfd *output_bfd, char **error_message) | |
5bd4f169 | 1390 | { |
a680de9a PB |
1391 | enum elf_ppc64_reloc_type r_type; |
1392 | long insn; | |
1393 | bfd_size_type octets; | |
3de43e7b | 1394 | bfd_vma value; |
a680de9a | 1395 | |
805fc799 AM |
1396 | /* If this is a relocatable link (output_bfd test tells us), just |
1397 | call the generic function. Any adjustment will be done at final | |
1398 | link time. */ | |
1399 | if (output_bfd != NULL) | |
cedb70c5 | 1400 | return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, |
805fc799 AM |
1401 | input_section, output_bfd, error_message); |
1402 | ||
5663e321 AM |
1403 | /* Adjust the addend for sign extension of the low 16 (or 34) bits. |
1404 | We won't actually be using the low bits, so trashing them | |
805fc799 | 1405 | doesn't matter. */ |
a680de9a | 1406 | r_type = reloc_entry->howto->type; |
5663e321 AM |
1407 | if (r_type == R_PPC64_ADDR16_HIGHERA34 |
1408 | || r_type == R_PPC64_ADDR16_HIGHESTA34 | |
1409 | || r_type == R_PPC64_REL16_HIGHERA34 | |
1410 | || r_type == R_PPC64_REL16_HIGHESTA34) | |
1411 | reloc_entry->addend += 1ULL << 33; | |
1412 | else | |
1413 | reloc_entry->addend += 1U << 15; | |
a680de9a PB |
1414 | if (r_type != R_PPC64_REL16DX_HA) |
1415 | return bfd_reloc_continue; | |
1416 | ||
1417 | value = 0; | |
1418 | if (!bfd_is_com_section (symbol->section)) | |
1419 | value = symbol->value; | |
1420 | value += (reloc_entry->addend | |
1421 | + symbol->section->output_offset | |
1422 | + symbol->section->output_section->vma); | |
1423 | value -= (reloc_entry->address | |
1424 | + input_section->output_offset | |
1425 | + input_section->output_section->vma); | |
3de43e7b | 1426 | value = (bfd_signed_vma) value >> 16; |
a680de9a | 1427 | |
bb294208 | 1428 | octets = reloc_entry->address * OCTETS_PER_BYTE (abfd, input_section); |
a680de9a PB |
1429 | insn = bfd_get_32 (abfd, (bfd_byte *) data + octets); |
1430 | insn &= ~0x1fffc1; | |
3de43e7b | 1431 | insn |= (value & 0xffc1) | ((value & 0x3e) << 15); |
a680de9a | 1432 | bfd_put_32 (abfd, insn, (bfd_byte *) data + octets); |
3de43e7b | 1433 | if (value + 0x8000 > 0xffff) |
a680de9a PB |
1434 | return bfd_reloc_overflow; |
1435 | return bfd_reloc_ok; | |
805fc799 | 1436 | } |
5bd4f169 | 1437 | |
2441e016 AM |
1438 | static bfd_reloc_status_type |
1439 | ppc64_elf_branch_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, | |
1440 | void *data, asection *input_section, | |
1441 | bfd *output_bfd, char **error_message) | |
1442 | { | |
1443 | if (output_bfd != NULL) | |
1444 | return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, | |
1445 | input_section, output_bfd, error_message); | |
1446 | ||
699733f6 AM |
1447 | if (strcmp (symbol->section->name, ".opd") == 0 |
1448 | && (symbol->section->owner->flags & DYNAMIC) == 0) | |
2441e016 AM |
1449 | { |
1450 | bfd_vma dest = opd_entry_value (symbol->section, | |
1451 | symbol->value + reloc_entry->addend, | |
aef36ac1 | 1452 | NULL, NULL, FALSE); |
2441e016 AM |
1453 | if (dest != (bfd_vma) -1) |
1454 | reloc_entry->addend = dest - (symbol->value | |
1455 | + symbol->section->output_section->vma | |
1456 | + symbol->section->output_offset); | |
1457 | } | |
810d4e75 AM |
1458 | else |
1459 | { | |
1460 | elf_symbol_type *elfsym = (elf_symbol_type *) symbol; | |
1461 | ||
1462 | if (symbol->section->owner != abfd | |
9f284bf9 | 1463 | && symbol->section->owner != NULL |
810d4e75 AM |
1464 | && abiversion (symbol->section->owner) >= 2) |
1465 | { | |
1466 | unsigned int i; | |
1467 | ||
1468 | for (i = 0; i < symbol->section->owner->symcount; ++i) | |
1469 | { | |
1470 | asymbol *symdef = symbol->section->owner->outsymbols[i]; | |
1471 | ||
1472 | if (strcmp (symdef->name, symbol->name) == 0) | |
1473 | { | |
1474 | elfsym = (elf_symbol_type *) symdef; | |
1475 | break; | |
1476 | } | |
1477 | } | |
1478 | } | |
1479 | reloc_entry->addend | |
1480 | += PPC64_LOCAL_ENTRY_OFFSET (elfsym->internal_elf_sym.st_other); | |
1481 | } | |
2441e016 AM |
1482 | return bfd_reloc_continue; |
1483 | } | |
1484 | ||
805fc799 | 1485 | static bfd_reloc_status_type |
4ce794b7 AM |
1486 | ppc64_elf_brtaken_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, |
1487 | void *data, asection *input_section, | |
1488 | bfd *output_bfd, char **error_message) | |
805fc799 AM |
1489 | { |
1490 | long insn; | |
04c9666a | 1491 | enum elf_ppc64_reloc_type r_type; |
805fc799 | 1492 | bfd_size_type octets; |
794e51c0 AM |
1493 | /* Assume 'at' branch hints. */ |
1494 | bfd_boolean is_isa_v2 = TRUE; | |
805fc799 AM |
1495 | |
1496 | /* If this is a relocatable link (output_bfd test tells us), just | |
1497 | call the generic function. Any adjustment will be done at final | |
1498 | link time. */ | |
5bd4f169 | 1499 | if (output_bfd != NULL) |
cedb70c5 | 1500 | return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, |
805fc799 AM |
1501 | input_section, output_bfd, error_message); |
1502 | ||
bb294208 | 1503 | octets = reloc_entry->address * OCTETS_PER_BYTE (abfd, input_section); |
805fc799 AM |
1504 | insn = bfd_get_32 (abfd, (bfd_byte *) data + octets); |
1505 | insn &= ~(0x01 << 21); | |
4ce794b7 | 1506 | r_type = reloc_entry->howto->type; |
805fc799 AM |
1507 | if (r_type == R_PPC64_ADDR14_BRTAKEN |
1508 | || r_type == R_PPC64_REL14_BRTAKEN) | |
cedb70c5 | 1509 | insn |= 0x01 << 21; /* 'y' or 't' bit, lowest bit of BO field. */ |
805fc799 | 1510 | |
794e51c0 | 1511 | if (is_isa_v2) |
5bd4f169 | 1512 | { |
805fc799 AM |
1513 | /* Set 'a' bit. This is 0b00010 in BO field for branch |
1514 | on CR(BI) insns (BO == 001at or 011at), and 0b01000 | |
1515 | for branch on CTR insns (BO == 1a00t or 1a01t). */ | |
1516 | if ((insn & (0x14 << 21)) == (0x04 << 21)) | |
1517 | insn |= 0x02 << 21; | |
1518 | else if ((insn & (0x14 << 21)) == (0x10 << 21)) | |
1519 | insn |= 0x08 << 21; | |
1520 | else | |
2441e016 | 1521 | goto out; |
5bd4f169 | 1522 | } |
805fc799 AM |
1523 | else |
1524 | { | |
1525 | bfd_vma target = 0; | |
1526 | bfd_vma from; | |
5bd4f169 | 1527 | |
805fc799 AM |
1528 | if (!bfd_is_com_section (symbol->section)) |
1529 | target = symbol->value; | |
1530 | target += symbol->section->output_section->vma; | |
1531 | target += symbol->section->output_offset; | |
1532 | target += reloc_entry->addend; | |
5bd4f169 | 1533 | |
805fc799 AM |
1534 | from = (reloc_entry->address |
1535 | + input_section->output_offset | |
1536 | + input_section->output_section->vma); | |
5bd4f169 | 1537 | |
805fc799 AM |
1538 | /* Invert 'y' bit if not the default. */ |
1539 | if ((bfd_signed_vma) (target - from) < 0) | |
1540 | insn ^= 0x01 << 21; | |
1541 | } | |
4ce794b7 | 1542 | bfd_put_32 (abfd, insn, (bfd_byte *) data + octets); |
2441e016 AM |
1543 | out: |
1544 | return ppc64_elf_branch_reloc (abfd, reloc_entry, symbol, data, | |
1545 | input_section, output_bfd, error_message); | |
805fc799 | 1546 | } |
5bd4f169 | 1547 | |
805fc799 | 1548 | static bfd_reloc_status_type |
4ce794b7 AM |
1549 | ppc64_elf_sectoff_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, |
1550 | void *data, asection *input_section, | |
1551 | bfd *output_bfd, char **error_message) | |
805fc799 AM |
1552 | { |
1553 | /* If this is a relocatable link (output_bfd test tells us), just | |
1554 | call the generic function. Any adjustment will be done at final | |
1555 | link time. */ | |
1556 | if (output_bfd != NULL) | |
cedb70c5 | 1557 | return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, |
805fc799 | 1558 | input_section, output_bfd, error_message); |
5bd4f169 | 1559 | |
805fc799 AM |
1560 | /* Subtract the symbol section base address. */ |
1561 | reloc_entry->addend -= symbol->section->output_section->vma; | |
5bd4f169 AM |
1562 | return bfd_reloc_continue; |
1563 | } | |
1564 | ||
805fc799 | 1565 | static bfd_reloc_status_type |
4ce794b7 AM |
1566 | ppc64_elf_sectoff_ha_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, |
1567 | void *data, asection *input_section, | |
1568 | bfd *output_bfd, char **error_message) | |
805fc799 AM |
1569 | { |
1570 | /* If this is a relocatable link (output_bfd test tells us), just | |
1571 | call the generic function. Any adjustment will be done at final | |
1572 | link time. */ | |
1573 | if (output_bfd != NULL) | |
cedb70c5 | 1574 | return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, |
805fc799 AM |
1575 | input_section, output_bfd, error_message); |
1576 | ||
1577 | /* Subtract the symbol section base address. */ | |
1578 | reloc_entry->addend -= symbol->section->output_section->vma; | |
1579 | ||
1580 | /* Adjust the addend for sign extension of the low 16 bits. */ | |
1581 | reloc_entry->addend += 0x8000; | |
1582 | return bfd_reloc_continue; | |
1583 | } | |
1584 | ||
1585 | static bfd_reloc_status_type | |
4ce794b7 AM |
1586 | ppc64_elf_toc_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, |
1587 | void *data, asection *input_section, | |
1588 | bfd *output_bfd, char **error_message) | |
805fc799 AM |
1589 | { |
1590 | bfd_vma TOCstart; | |
1591 | ||
1592 | /* If this is a relocatable link (output_bfd test tells us), just | |
1593 | call the generic function. Any adjustment will be done at final | |
1594 | link time. */ | |
1595 | if (output_bfd != NULL) | |
cedb70c5 | 1596 | return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, |
805fc799 AM |
1597 | input_section, output_bfd, error_message); |
1598 | ||
1599 | TOCstart = _bfd_get_gp_value (input_section->output_section->owner); | |
1600 | if (TOCstart == 0) | |
1c865ab2 | 1601 | TOCstart = ppc64_elf_set_toc (NULL, input_section->output_section->owner); |
805fc799 AM |
1602 | |
1603 | /* Subtract the TOC base address. */ | |
1604 | reloc_entry->addend -= TOCstart + TOC_BASE_OFF; | |
1605 | return bfd_reloc_continue; | |
1606 | } | |
1607 | ||
1608 | static bfd_reloc_status_type | |
4ce794b7 AM |
1609 | ppc64_elf_toc_ha_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, |
1610 | void *data, asection *input_section, | |
1611 | bfd *output_bfd, char **error_message) | |
805fc799 AM |
1612 | { |
1613 | bfd_vma TOCstart; | |
1614 | ||
1615 | /* If this is a relocatable link (output_bfd test tells us), just | |
1616 | call the generic function. Any adjustment will be done at final | |
1617 | link time. */ | |
1618 | if (output_bfd != NULL) | |
cedb70c5 | 1619 | return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, |
805fc799 AM |
1620 | input_section, output_bfd, error_message); |
1621 | ||
1622 | TOCstart = _bfd_get_gp_value (input_section->output_section->owner); | |
1623 | if (TOCstart == 0) | |
1c865ab2 | 1624 | TOCstart = ppc64_elf_set_toc (NULL, input_section->output_section->owner); |
805fc799 AM |
1625 | |
1626 | /* Subtract the TOC base address. */ | |
1627 | reloc_entry->addend -= TOCstart + TOC_BASE_OFF; | |
1628 | ||
1629 | /* Adjust the addend for sign extension of the low 16 bits. */ | |
1630 | reloc_entry->addend += 0x8000; | |
1631 | return bfd_reloc_continue; | |
1632 | } | |
1633 | ||
1634 | static bfd_reloc_status_type | |
4ce794b7 AM |
1635 | ppc64_elf_toc64_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, |
1636 | void *data, asection *input_section, | |
1637 | bfd *output_bfd, char **error_message) | |
805fc799 AM |
1638 | { |
1639 | bfd_vma TOCstart; | |
1640 | bfd_size_type octets; | |
1641 | ||
1642 | /* If this is a relocatable link (output_bfd test tells us), just | |
1643 | call the generic function. Any adjustment will be done at final | |
1644 | link time. */ | |
1645 | if (output_bfd != NULL) | |
cedb70c5 | 1646 | return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, |
805fc799 AM |
1647 | input_section, output_bfd, error_message); |
1648 | ||
1649 | TOCstart = _bfd_get_gp_value (input_section->output_section->owner); | |
1650 | if (TOCstart == 0) | |
1c865ab2 | 1651 | TOCstart = ppc64_elf_set_toc (NULL, input_section->output_section->owner); |
805fc799 | 1652 | |
bb294208 | 1653 | octets = reloc_entry->address * OCTETS_PER_BYTE (abfd, input_section); |
805fc799 AM |
1654 | bfd_put_64 (abfd, TOCstart + TOC_BASE_OFF, (bfd_byte *) data + octets); |
1655 | return bfd_reloc_ok; | |
1656 | } | |
1657 | ||
5663e321 AM |
1658 | static bfd_reloc_status_type |
1659 | ppc64_elf_prefix_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, | |
1660 | void *data, asection *input_section, | |
1661 | bfd *output_bfd, char **error_message) | |
1662 | { | |
1663 | uint64_t insn; | |
1664 | bfd_vma targ; | |
1665 | ||
1666 | if (output_bfd != NULL) | |
1667 | return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, | |
1668 | input_section, output_bfd, error_message); | |
1669 | ||
1670 | insn = bfd_get_32 (abfd, (bfd_byte *) data + reloc_entry->address); | |
1671 | insn <<= 32; | |
1672 | insn |= bfd_get_32 (abfd, (bfd_byte *) data + reloc_entry->address + 4); | |
1673 | ||
1674 | targ = (symbol->section->output_section->vma | |
1675 | + symbol->section->output_offset | |
1676 | + reloc_entry->addend); | |
1677 | if (!bfd_is_com_section (symbol->section)) | |
1678 | targ += symbol->value; | |
1679 | if (reloc_entry->howto->type == R_PPC64_D34_HA30) | |
1680 | targ += 1ULL << 33; | |
1681 | if (reloc_entry->howto->pc_relative) | |
1682 | { | |
1683 | bfd_vma from = (reloc_entry->address | |
1684 | + input_section->output_offset | |
1685 | + input_section->output_section->vma); | |
1686 | targ -=from; | |
1687 | } | |
1688 | targ >>= reloc_entry->howto->rightshift; | |
1689 | insn &= ~reloc_entry->howto->dst_mask; | |
1690 | insn |= ((targ << 16) | (targ & 0xffff)) & reloc_entry->howto->dst_mask; | |
1691 | bfd_put_32 (abfd, insn >> 32, (bfd_byte *) data + reloc_entry->address); | |
1692 | bfd_put_32 (abfd, insn, (bfd_byte *) data + reloc_entry->address + 4); | |
1693 | if (reloc_entry->howto->complain_on_overflow == complain_overflow_signed | |
1694 | && (targ + (1ULL << (reloc_entry->howto->bitsize - 1)) | |
1695 | >= 1ULL << reloc_entry->howto->bitsize)) | |
1696 | return bfd_reloc_overflow; | |
1697 | return bfd_reloc_ok; | |
1698 | } | |
1699 | ||
805fc799 | 1700 | static bfd_reloc_status_type |
4ce794b7 AM |
1701 | ppc64_elf_unhandled_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, |
1702 | void *data, asection *input_section, | |
1703 | bfd *output_bfd, char **error_message) | |
805fc799 AM |
1704 | { |
1705 | /* If this is a relocatable link (output_bfd test tells us), just | |
1706 | call the generic function. Any adjustment will be done at final | |
1707 | link time. */ | |
1708 | if (output_bfd != NULL) | |
cedb70c5 | 1709 | return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, |
805fc799 AM |
1710 | input_section, output_bfd, error_message); |
1711 | ||
1712 | if (error_message != NULL) | |
1713 | { | |
1714 | static char buf[60]; | |
1715 | sprintf (buf, "generic linker can't handle %s", | |
1716 | reloc_entry->howto->name); | |
1717 | *error_message = buf; | |
1718 | } | |
1719 | return bfd_reloc_dangerous; | |
1720 | } | |
1721 | ||
927be08e AM |
1722 | /* Track GOT entries needed for a given symbol. We might need more |
1723 | than one got entry per symbol. */ | |
1724 | struct got_entry | |
1725 | { | |
1726 | struct got_entry *next; | |
1727 | ||
1728 | /* The symbol addend that we'll be placing in the GOT. */ | |
1729 | bfd_vma addend; | |
1730 | ||
1731 | /* Unlike other ELF targets, we use separate GOT entries for the same | |
1732 | symbol referenced from different input files. This is to support | |
1733 | automatic multiple TOC/GOT sections, where the TOC base can vary | |
1734 | from one input file to another. After partitioning into TOC groups | |
1735 | we merge entries within the group. | |
1736 | ||
1737 | Point to the BFD owning this GOT entry. */ | |
1738 | bfd *owner; | |
1739 | ||
1740 | /* Zero for non-tls entries, or TLS_TLS and one of TLS_GD, TLS_LD, | |
1741 | TLS_TPREL or TLS_DTPREL for tls entries. */ | |
f961d9dd | 1742 | unsigned char tls_type; |
927be08e AM |
1743 | |
1744 | /* Non-zero if got.ent points to real entry. */ | |
f961d9dd | 1745 | unsigned char is_indirect; |
927be08e AM |
1746 | |
1747 | /* Reference count until size_dynamic_sections, GOT offset thereafter. */ | |
1748 | union | |
2cdcc330 AM |
1749 | { |
1750 | bfd_signed_vma refcount; | |
1751 | bfd_vma offset; | |
1752 | struct got_entry *ent; | |
1753 | } got; | |
927be08e AM |
1754 | }; |
1755 | ||
1756 | /* The same for PLT. */ | |
1757 | struct plt_entry | |
1758 | { | |
1759 | struct plt_entry *next; | |
1760 | ||
1761 | bfd_vma addend; | |
1762 | ||
1763 | union | |
2cdcc330 AM |
1764 | { |
1765 | bfd_signed_vma refcount; | |
1766 | bfd_vma offset; | |
1767 | } plt; | |
927be08e AM |
1768 | }; |
1769 | ||
e717da7e AM |
1770 | struct ppc64_elf_obj_tdata |
1771 | { | |
1772 | struct elf_obj_tdata elf; | |
1773 | ||
1774 | /* Shortcuts to dynamic linker sections. */ | |
1775 | asection *got; | |
1776 | asection *relgot; | |
1777 | ||
b3fac117 AM |
1778 | /* Used during garbage collection. We attach global symbols defined |
1779 | on removed .opd entries to this section so that the sym is removed. */ | |
1780 | asection *deleted_section; | |
81688140 | 1781 | |
927be08e | 1782 | /* TLS local dynamic got entry handling. Support for multiple GOT |
e717da7e | 1783 | sections means we potentially need one of these for each input bfd. */ |
927be08e | 1784 | struct got_entry tlsld_got; |
8860955f | 1785 | |
2cdcc330 AM |
1786 | union |
1787 | { | |
729eabd5 AM |
1788 | /* A copy of relocs before they are modified for --emit-relocs. */ |
1789 | Elf_Internal_Rela *relocs; | |
1790 | ||
1791 | /* Section contents. */ | |
1792 | bfd_byte *contents; | |
1793 | } opd; | |
d77c8a4b AM |
1794 | |
1795 | /* Nonzero if this bfd has small toc/got relocs, ie. that expect | |
1796 | the reloc to be in the range -32768 to 32767. */ | |
98528052 AM |
1797 | unsigned int has_small_toc_reloc : 1; |
1798 | ||
560c8763 AM |
1799 | /* Set if toc/got ha relocs detected not using r2, or lo reloc |
1800 | instruction not one we handle. */ | |
1801 | unsigned int unexpected_toc_insn : 1; | |
066f4018 | 1802 | |
903b777d AM |
1803 | /* Set if PLT/GOT/TOC relocs that can be optimised are present in |
1804 | this file. */ | |
1805 | unsigned int has_optrel : 1; | |
e717da7e AM |
1806 | }; |
1807 | ||
1808 | #define ppc64_elf_tdata(bfd) \ | |
1809 | ((struct ppc64_elf_obj_tdata *) (bfd)->tdata.any) | |
1810 | ||
1811 | #define ppc64_tlsld_got(bfd) \ | |
1812 | (&ppc64_elf_tdata (bfd)->tlsld_got) | |
1813 | ||
0c8d6e5c AM |
1814 | #define is_ppc64_elf(bfd) \ |
1815 | (bfd_get_flavour (bfd) == bfd_target_elf_flavour \ | |
4dfe6ac6 | 1816 | && elf_object_id (bfd) == PPC64_ELF_DATA) |
0c8d6e5c | 1817 | |
e717da7e AM |
1818 | /* Override the generic function because we store some extras. */ |
1819 | ||
1820 | static bfd_boolean | |
1821 | ppc64_elf_mkobject (bfd *abfd) | |
1822 | { | |
0ffa91dd | 1823 | return bfd_elf_allocate_object (abfd, sizeof (struct ppc64_elf_obj_tdata), |
4dfe6ac6 | 1824 | PPC64_ELF_DATA); |
e717da7e AM |
1825 | } |
1826 | ||
feee612b | 1827 | /* Fix bad default arch selected for a 64 bit input bfd when the |
14b57c7c | 1828 | default is 32 bit. Also select arch based on apuinfo. */ |
feee612b | 1829 | |
b34976b6 | 1830 | static bfd_boolean |
4ce794b7 | 1831 | ppc64_elf_object_p (bfd *abfd) |
feee612b | 1832 | { |
14b57c7c AM |
1833 | if (!abfd->arch_info->the_default) |
1834 | return TRUE; | |
1835 | ||
1836 | if (abfd->arch_info->bits_per_word == 32) | |
feee612b AM |
1837 | { |
1838 | Elf_Internal_Ehdr *i_ehdr = elf_elfheader (abfd); | |
1839 | ||
1840 | if (i_ehdr->e_ident[EI_CLASS] == ELFCLASS64) | |
1841 | { | |
1842 | /* Relies on arch after 32 bit default being 64 bit default. */ | |
1843 | abfd->arch_info = abfd->arch_info->next; | |
1844 | BFD_ASSERT (abfd->arch_info->bits_per_word == 64); | |
1845 | } | |
1846 | } | |
14b57c7c | 1847 | return _bfd_elf_ppc_set_arch (abfd); |
feee612b AM |
1848 | } |
1849 | ||
d37c89e5 AM |
1850 | /* Support for core dump NOTE sections. */ |
1851 | ||
1852 | static bfd_boolean | |
1853 | ppc64_elf_grok_prstatus (bfd *abfd, Elf_Internal_Note *note) | |
1854 | { | |
eea6121a | 1855 | size_t offset, size; |
d37c89e5 AM |
1856 | |
1857 | if (note->descsz != 504) | |
1858 | return FALSE; | |
1859 | ||
1860 | /* pr_cursig */ | |
228e534f | 1861 | elf_tdata (abfd)->core->signal = bfd_get_16 (abfd, note->descdata + 12); |
d37c89e5 AM |
1862 | |
1863 | /* pr_pid */ | |
228e534f | 1864 | elf_tdata (abfd)->core->lwpid = bfd_get_32 (abfd, note->descdata + 32); |
d37c89e5 AM |
1865 | |
1866 | /* pr_reg */ | |
1867 | offset = 112; | |
eea6121a | 1868 | size = 384; |
d37c89e5 AM |
1869 | |
1870 | /* Make a ".reg/999" section. */ | |
1871 | return _bfd_elfcore_make_pseudosection (abfd, ".reg", | |
eea6121a | 1872 | size, note->descpos + offset); |
d37c89e5 AM |
1873 | } |
1874 | ||
1875 | static bfd_boolean | |
1876 | ppc64_elf_grok_psinfo (bfd *abfd, Elf_Internal_Note *note) | |
1877 | { | |
1878 | if (note->descsz != 136) | |
1879 | return FALSE; | |
1880 | ||
228e534f | 1881 | elf_tdata (abfd)->core->pid |
bc989cdc | 1882 | = bfd_get_32 (abfd, note->descdata + 24); |
228e534f | 1883 | elf_tdata (abfd)->core->program |
d37c89e5 | 1884 | = _bfd_elfcore_strndup (abfd, note->descdata + 40, 16); |
228e534f | 1885 | elf_tdata (abfd)->core->command |
d37c89e5 AM |
1886 | = _bfd_elfcore_strndup (abfd, note->descdata + 56, 80); |
1887 | ||
1888 | return TRUE; | |
1889 | } | |
1890 | ||
183e98be AM |
1891 | static char * |
1892 | ppc64_elf_write_core_note (bfd *abfd, char *buf, int *bufsiz, int note_type, | |
1893 | ...) | |
1894 | { | |
1895 | switch (note_type) | |
1896 | { | |
1897 | default: | |
1898 | return NULL; | |
1899 | ||
1900 | case NT_PRPSINFO: | |
1901 | { | |
9ef6d1e3 | 1902 | char data[136] ATTRIBUTE_NONSTRING; |
183e98be AM |
1903 | va_list ap; |
1904 | ||
1905 | va_start (ap, note_type); | |
75cd47ed | 1906 | memset (data, 0, sizeof (data)); |
183e98be | 1907 | strncpy (data + 40, va_arg (ap, const char *), 16); |
be3e27bb | 1908 | #if GCC_VERSION == 8000 || GCC_VERSION == 8001 |
95da9854 | 1909 | DIAGNOSTIC_PUSH; |
be3e27bb | 1910 | /* GCC 8.0 and 8.1 warn about 80 equals destination size with |
95da9854 L |
1911 | -Wstringop-truncation: |
1912 | https://gcc.gnu.org/bugzilla/show_bug.cgi?id=85643 | |
1913 | */ | |
95da9854 L |
1914 | DIAGNOSTIC_IGNORE_STRINGOP_TRUNCATION; |
1915 | #endif | |
183e98be | 1916 | strncpy (data + 56, va_arg (ap, const char *), 80); |
be3e27bb | 1917 | #if GCC_VERSION == 8000 || GCC_VERSION == 8001 |
95da9854 | 1918 | DIAGNOSTIC_POP; |
fe75810f | 1919 | #endif |
183e98be AM |
1920 | va_end (ap); |
1921 | return elfcore_write_note (abfd, buf, bufsiz, | |
1922 | "CORE", note_type, data, sizeof (data)); | |
1923 | } | |
1924 | ||
1925 | case NT_PRSTATUS: | |
1926 | { | |
1927 | char data[504]; | |
1928 | va_list ap; | |
1929 | long pid; | |
1930 | int cursig; | |
1931 | const void *greg; | |
1932 | ||
1933 | va_start (ap, note_type); | |
1934 | memset (data, 0, 112); | |
1935 | pid = va_arg (ap, long); | |
1936 | bfd_put_32 (abfd, pid, data + 32); | |
1937 | cursig = va_arg (ap, int); | |
1938 | bfd_put_16 (abfd, cursig, data + 12); | |
1939 | greg = va_arg (ap, const void *); | |
1940 | memcpy (data + 112, greg, 384); | |
1941 | memset (data + 496, 0, 8); | |
1942 | va_end (ap); | |
1943 | return elfcore_write_note (abfd, buf, bufsiz, | |
1944 | "CORE", note_type, data, sizeof (data)); | |
1945 | } | |
1946 | } | |
1947 | } | |
1948 | ||
5d35169e AM |
1949 | /* Add extra PPC sections. */ |
1950 | ||
2cdcc330 | 1951 | static const struct bfd_elf_special_section ppc64_elf_special_sections[] = |
7f4d3958 | 1952 | { |
07d6d2b8 AM |
1953 | { STRING_COMMA_LEN (".plt"), 0, SHT_NOBITS, 0 }, |
1954 | { STRING_COMMA_LEN (".sbss"), -2, SHT_NOBITS, SHF_ALLOC + SHF_WRITE }, | |
0112cd26 | 1955 | { STRING_COMMA_LEN (".sdata"), -2, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE }, |
07d6d2b8 AM |
1956 | { STRING_COMMA_LEN (".toc"), 0, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE }, |
1957 | { STRING_COMMA_LEN (".toc1"), 0, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE }, | |
0112cd26 | 1958 | { STRING_COMMA_LEN (".tocbss"), 0, SHT_NOBITS, SHF_ALLOC + SHF_WRITE }, |
07d6d2b8 | 1959 | { NULL, 0, 0, 0, 0 } |
5d35169e AM |
1960 | }; |
1961 | ||
7c8fe5c4 AM |
1962 | enum _ppc64_sec_type { |
1963 | sec_normal = 0, | |
1964 | sec_opd = 1, | |
1965 | sec_toc = 2 | |
1966 | }; | |
1967 | ||
f0abc2a1 AM |
1968 | struct _ppc64_elf_section_data |
1969 | { | |
1970 | struct bfd_elf_section_data elf; | |
411e1bfb | 1971 | |
f0abc2a1 AM |
1972 | union |
1973 | { | |
51aecdc5 AM |
1974 | /* An array with one entry for each opd function descriptor, |
1975 | and some spares since opd entries may be either 16 or 24 bytes. */ | |
1976 | #define OPD_NDX(OFF) ((OFF) >> 4) | |
74f0fb50 AM |
1977 | struct _opd_sec_data |
1978 | { | |
1979 | /* Points to the function code section for local opd entries. */ | |
1980 | asection **func_sec; | |
1981 | ||
1982 | /* After editing .opd, adjust references to opd local syms. */ | |
1983 | long *adjust; | |
1984 | } opd; | |
7c8fe5c4 | 1985 | |
3a71aa26 AM |
1986 | /* An array for toc sections, indexed by offset/8. */ |
1987 | struct _toc_sec_data | |
1988 | { | |
1989 | /* Specifies the relocation symbol index used at a given toc offset. */ | |
1990 | unsigned *symndx; | |
1991 | ||
1992 | /* And the relocation addend. */ | |
1993 | bfd_vma *add; | |
1994 | } toc; | |
7c8fe5c4 AM |
1995 | } u; |
1996 | ||
1997 | enum _ppc64_sec_type sec_type:2; | |
411e1bfb | 1998 | |
7c8fe5c4 AM |
1999 | /* Flag set when small branches are detected. Used to |
2000 | select suitable defaults for the stub group size. */ | |
2001 | unsigned int has_14bit_branch:1; | |
3e04d765 AM |
2002 | |
2003 | /* Flag set when PLTCALL relocs are detected. */ | |
2004 | unsigned int has_pltcall:1; | |
066f4018 | 2005 | |
903b777d AM |
2006 | /* Flag set when section has PLT/GOT/TOC relocations that can be |
2007 | optimised. */ | |
2008 | unsigned int has_optrel:1; | |
f0abc2a1 AM |
2009 | }; |
2010 | ||
2011 | #define ppc64_elf_section_data(sec) \ | |
411e1bfb | 2012 | ((struct _ppc64_elf_section_data *) elf_section_data (sec)) |
f0abc2a1 AM |
2013 | |
2014 | static bfd_boolean | |
4ce794b7 | 2015 | ppc64_elf_new_section_hook (bfd *abfd, asection *sec) |
f0abc2a1 | 2016 | { |
f592407e AM |
2017 | if (!sec->used_by_bfd) |
2018 | { | |
2019 | struct _ppc64_elf_section_data *sdata; | |
986f0783 | 2020 | size_t amt = sizeof (*sdata); |
f0abc2a1 | 2021 | |
f592407e AM |
2022 | sdata = bfd_zalloc (abfd, amt); |
2023 | if (sdata == NULL) | |
2024 | return FALSE; | |
2025 | sec->used_by_bfd = sdata; | |
2026 | } | |
f0abc2a1 AM |
2027 | |
2028 | return _bfd_elf_new_section_hook (abfd, sec); | |
2029 | } | |
4025353c | 2030 | |
bf577467 AM |
2031 | static bfd_boolean |
2032 | ppc64_elf_section_flags (const Elf_Internal_Shdr *hdr) | |
2033 | { | |
2034 | const char *name = hdr->bfd_section->name; | |
2035 | ||
2036 | if (strncmp (name, ".sbss", 5) == 0 | |
2037 | || strncmp (name, ".sdata", 6) == 0) | |
2038 | hdr->bfd_section->flags |= SEC_SMALL_DATA; | |
2039 | ||
2040 | return TRUE; | |
2041 | } | |
2042 | ||
74f0fb50 | 2043 | static struct _opd_sec_data * |
4025353c AM |
2044 | get_opd_info (asection * sec) |
2045 | { | |
2046 | if (sec != NULL | |
2047 | && ppc64_elf_section_data (sec) != NULL | |
7c8fe5c4 | 2048 | && ppc64_elf_section_data (sec)->sec_type == sec_opd) |
74f0fb50 | 2049 | return &ppc64_elf_section_data (sec)->u.opd; |
4025353c AM |
2050 | return NULL; |
2051 | } | |
90e3cdf2 JJ |
2052 | \f |
2053 | /* Parameters for the qsort hook. */ | |
90e3cdf2 | 2054 | static bfd_boolean synthetic_relocatable; |
cd285db5 | 2055 | static asection *synthetic_opd; |
90e3cdf2 | 2056 | |
699733f6 | 2057 | /* qsort comparison function for ppc64_elf_get_synthetic_symtab. */ |
90e3cdf2 JJ |
2058 | |
2059 | static int | |
2060 | compare_symbols (const void *ap, const void *bp) | |
2061 | { | |
2cdcc330 AM |
2062 | const asymbol *a = *(const asymbol **) ap; |
2063 | const asymbol *b = *(const asymbol **) bp; | |
90e3cdf2 | 2064 | |
699733f6 AM |
2065 | /* Section symbols first. */ |
2066 | if ((a->flags & BSF_SECTION_SYM) && !(b->flags & BSF_SECTION_SYM)) | |
90e3cdf2 | 2067 | return -1; |
699733f6 | 2068 | if (!(a->flags & BSF_SECTION_SYM) && (b->flags & BSF_SECTION_SYM)) |
90e3cdf2 JJ |
2069 | return 1; |
2070 | ||
699733f6 | 2071 | /* then .opd symbols. */ |
cd285db5 AM |
2072 | if (synthetic_opd != NULL) |
2073 | { | |
2074 | if (strcmp (a->section->name, ".opd") == 0 | |
2075 | && strcmp (b->section->name, ".opd") != 0) | |
2076 | return -1; | |
2077 | if (strcmp (a->section->name, ".opd") != 0 | |
2078 | && strcmp (b->section->name, ".opd") == 0) | |
2079 | return 1; | |
2080 | } | |
90e3cdf2 | 2081 | |
699733f6 | 2082 | /* then other code symbols. */ |
2cdcc330 AM |
2083 | if (((a->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL)) |
2084 | == (SEC_CODE | SEC_ALLOC)) | |
2085 | && ((b->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL)) | |
2086 | != (SEC_CODE | SEC_ALLOC))) | |
90e3cdf2 JJ |
2087 | return -1; |
2088 | ||
2cdcc330 AM |
2089 | if (((a->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL)) |
2090 | != (SEC_CODE | SEC_ALLOC)) | |
2091 | && ((b->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL)) | |
2092 | == (SEC_CODE | SEC_ALLOC))) | |
90e3cdf2 JJ |
2093 | return 1; |
2094 | ||
2095 | if (synthetic_relocatable) | |
2096 | { | |
2097 | if (a->section->id < b->section->id) | |
2098 | return -1; | |
2099 | ||
2100 | if (a->section->id > b->section->id) | |
2101 | return 1; | |
2102 | } | |
2103 | ||
2104 | if (a->value + a->section->vma < b->value + b->section->vma) | |
2105 | return -1; | |
2106 | ||
2107 | if (a->value + a->section->vma > b->value + b->section->vma) | |
2108 | return 1; | |
2109 | ||
4d35a0aa AM |
2110 | /* For syms with the same value, prefer strong dynamic global function |
2111 | syms over other syms. */ | |
2112 | if ((a->flags & BSF_GLOBAL) != 0 && (b->flags & BSF_GLOBAL) == 0) | |
2113 | return -1; | |
2114 | ||
2115 | if ((a->flags & BSF_GLOBAL) == 0 && (b->flags & BSF_GLOBAL) != 0) | |
2116 | return 1; | |
2117 | ||
2118 | if ((a->flags & BSF_FUNCTION) != 0 && (b->flags & BSF_FUNCTION) == 0) | |
2119 | return -1; | |
2120 | ||
2121 | if ((a->flags & BSF_FUNCTION) == 0 && (b->flags & BSF_FUNCTION) != 0) | |
2122 | return 1; | |
2123 | ||
2124 | if ((a->flags & BSF_WEAK) == 0 && (b->flags & BSF_WEAK) != 0) | |
2125 | return -1; | |
2126 | ||
2127 | if ((a->flags & BSF_WEAK) != 0 && (b->flags & BSF_WEAK) == 0) | |
2128 | return 1; | |
2129 | ||
2130 | if ((a->flags & BSF_DYNAMIC) != 0 && (b->flags & BSF_DYNAMIC) == 0) | |
2131 | return -1; | |
2132 | ||
2133 | if ((a->flags & BSF_DYNAMIC) == 0 && (b->flags & BSF_DYNAMIC) != 0) | |
2134 | return 1; | |
2135 | ||
dcea6a95 AM |
2136 | /* Finally, sort on where the symbol is in memory. The symbols will |
2137 | be in at most two malloc'd blocks, one for static syms, one for | |
2138 | dynamic syms, and we distinguish the two blocks above by testing | |
2139 | BSF_DYNAMIC. Since we are sorting the symbol pointers which were | |
2140 | originally in the same order as the symbols (and we're not | |
2141 | sorting the symbols themselves), this ensures a stable sort. */ | |
2142 | if (a < b) | |
2143 | return -1; | |
2144 | if (a > b) | |
2145 | return 1; | |
2146 | return 0; | |
90e3cdf2 JJ |
2147 | } |
2148 | ||
699733f6 | 2149 | /* Search SYMS for a symbol of the given VALUE. */ |
90e3cdf2 | 2150 | |
699733f6 | 2151 | static asymbol * |
9ad9b810 AM |
2152 | sym_exists_at (asymbol **syms, size_t lo, size_t hi, unsigned int id, |
2153 | bfd_vma value) | |
90e3cdf2 | 2154 | { |
9ad9b810 | 2155 | size_t mid; |
90e3cdf2 | 2156 | |
7292b3ac | 2157 | if (id == (unsigned) -1) |
699733f6 AM |
2158 | { |
2159 | while (lo < hi) | |
2160 | { | |
2161 | mid = (lo + hi) >> 1; | |
2162 | if (syms[mid]->value + syms[mid]->section->vma < value) | |
2163 | lo = mid + 1; | |
2164 | else if (syms[mid]->value + syms[mid]->section->vma > value) | |
2165 | hi = mid; | |
2166 | else | |
2167 | return syms[mid]; | |
2168 | } | |
2169 | } | |
2170 | else | |
2171 | { | |
2172 | while (lo < hi) | |
2173 | { | |
2174 | mid = (lo + hi) >> 1; | |
2175 | if (syms[mid]->section->id < id) | |
2176 | lo = mid + 1; | |
2177 | else if (syms[mid]->section->id > id) | |
2178 | hi = mid; | |
2179 | else if (syms[mid]->value < value) | |
2180 | lo = mid + 1; | |
2181 | else if (syms[mid]->value > value) | |
2182 | hi = mid; | |
2183 | else | |
2184 | return syms[mid]; | |
2185 | } | |
2186 | } | |
2187 | return NULL; | |
90e3cdf2 JJ |
2188 | } |
2189 | ||
468392fb AM |
2190 | static bfd_boolean |
2191 | section_covers_vma (bfd *abfd ATTRIBUTE_UNUSED, asection *section, void *ptr) | |
2192 | { | |
2193 | bfd_vma vma = *(bfd_vma *) ptr; | |
2194 | return ((section->flags & SEC_ALLOC) != 0 | |
2195 | && section->vma <= vma | |
2196 | && vma < section->vma + section->size); | |
2197 | } | |
2198 | ||
699733f6 | 2199 | /* Create synthetic symbols, effectively restoring "dot-symbol" function |
c4b0b099 AM |
2200 | entry syms. Also generate @plt symbols for the glink branch table. |
2201 | Returns count of synthetic symbols in RET or -1 on error. */ | |
90e3cdf2 JJ |
2202 | |
2203 | static long | |
a7535cf3 AM |
2204 | ppc64_elf_get_synthetic_symtab (bfd *abfd, |
2205 | long static_count, asymbol **static_syms, | |
2206 | long dyn_count, asymbol **dyn_syms, | |
c9727e01 | 2207 | asymbol **ret) |
90e3cdf2 JJ |
2208 | { |
2209 | asymbol *s; | |
0ccf57bd | 2210 | size_t i, j, count; |
90e3cdf2 | 2211 | char *names; |
0ccf57bd | 2212 | size_t symcount, codesecsym, codesecsymend, secsymend, opdsymend; |
ee67d69a | 2213 | asection *opd = NULL; |
90e3cdf2 | 2214 | bfd_boolean relocatable = (abfd->flags & (EXEC_P | DYNAMIC)) == 0; |
a7535cf3 | 2215 | asymbol **syms; |
ee67d69a | 2216 | int abi = abiversion (abfd); |
90e3cdf2 JJ |
2217 | |
2218 | *ret = NULL; | |
2219 | ||
ee67d69a AM |
2220 | if (abi < 2) |
2221 | { | |
2222 | opd = bfd_get_section_by_name (abfd, ".opd"); | |
2223 | if (opd == NULL && abi == 1) | |
2224 | return 0; | |
2225 | } | |
90e3cdf2 | 2226 | |
a5259595 AM |
2227 | syms = NULL; |
2228 | codesecsym = 0; | |
2229 | codesecsymend = 0; | |
2230 | secsymend = 0; | |
2231 | opdsymend = 0; | |
2232 | symcount = 0; | |
2233 | if (opd != NULL) | |
c9727e01 | 2234 | { |
a5259595 AM |
2235 | symcount = static_count; |
2236 | if (!relocatable) | |
2237 | symcount += dyn_count; | |
2238 | if (symcount == 0) | |
2239 | return 0; | |
c9727e01 | 2240 | |
a5259595 AM |
2241 | syms = bfd_malloc ((symcount + 1) * sizeof (*syms)); |
2242 | if (syms == NULL) | |
2243 | return -1; | |
90e3cdf2 | 2244 | |
a5259595 AM |
2245 | if (!relocatable && static_count != 0 && dyn_count != 0) |
2246 | { | |
2247 | /* Use both symbol tables. */ | |
2248 | memcpy (syms, static_syms, static_count * sizeof (*syms)); | |
2249 | memcpy (syms + static_count, dyn_syms, | |
2250 | (dyn_count + 1) * sizeof (*syms)); | |
2251 | } | |
2252 | else if (!relocatable && static_count == 0) | |
2253 | memcpy (syms, dyn_syms, (symcount + 1) * sizeof (*syms)); | |
2254 | else | |
2255 | memcpy (syms, static_syms, (symcount + 1) * sizeof (*syms)); | |
90e3cdf2 | 2256 | |
0ccf57bd AM |
2257 | /* Trim uninteresting symbols. Interesting symbols are section, |
2258 | function, and notype symbols. */ | |
2259 | for (i = 0, j = 0; i < symcount; ++i) | |
2260 | if ((syms[i]->flags & (BSF_FILE | BSF_OBJECT | BSF_THREAD_LOCAL | |
2261 | | BSF_RELC | BSF_SRELC)) == 0) | |
2262 | syms[j++] = syms[i]; | |
2263 | symcount = j; | |
2264 | ||
a5259595 AM |
2265 | synthetic_relocatable = relocatable; |
2266 | synthetic_opd = opd; | |
2267 | qsort (syms, symcount, sizeof (*syms), compare_symbols); | |
90e3cdf2 | 2268 | |
a5259595 AM |
2269 | if (!relocatable && symcount > 1) |
2270 | { | |
bfa5bd2a PA |
2271 | /* Trim duplicate syms, since we may have merged the normal |
2272 | and dynamic symbols. Actually, we only care about syms | |
2273 | that have different values, so trim any with the same | |
2274 | value. Don't consider ifunc and ifunc resolver symbols | |
2275 | duplicates however, because GDB wants to know whether a | |
2276 | text symbol is an ifunc resolver. */ | |
a5259595 | 2277 | for (i = 1, j = 1; i < symcount; ++i) |
bfa5bd2a PA |
2278 | { |
2279 | const asymbol *s0 = syms[i - 1]; | |
2280 | const asymbol *s1 = syms[i]; | |
2281 | ||
2282 | if ((s0->value + s0->section->vma | |
2283 | != s1->value + s1->section->vma) | |
2284 | || ((s0->flags & BSF_GNU_INDIRECT_FUNCTION) | |
2285 | != (s1->flags & BSF_GNU_INDIRECT_FUNCTION))) | |
2286 | syms[j++] = syms[i]; | |
2287 | } | |
a5259595 AM |
2288 | symcount = j; |
2289 | } | |
699733f6 | 2290 | |
a5259595 AM |
2291 | i = 0; |
2292 | /* Note that here and in compare_symbols we can't compare opd and | |
2293 | sym->section directly. With separate debug info files, the | |
2294 | symbols will be extracted from the debug file while abfd passed | |
2295 | to this function is the real binary. */ | |
0ccf57bd | 2296 | if (strcmp (syms[i]->section->name, ".opd") == 0) |
a5259595 AM |
2297 | ++i; |
2298 | codesecsym = i; | |
2299 | ||
2300 | for (; i < symcount; ++i) | |
2301 | if (((syms[i]->section->flags & (SEC_CODE | SEC_ALLOC | |
2302 | | SEC_THREAD_LOCAL)) | |
2303 | != (SEC_CODE | SEC_ALLOC)) | |
2304 | || (syms[i]->flags & BSF_SECTION_SYM) == 0) | |
2305 | break; | |
2306 | codesecsymend = i; | |
2307 | ||
2308 | for (; i < symcount; ++i) | |
2309 | if ((syms[i]->flags & BSF_SECTION_SYM) == 0) | |
2310 | break; | |
2311 | secsymend = i; | |
2312 | ||
2313 | for (; i < symcount; ++i) | |
2314 | if (strcmp (syms[i]->section->name, ".opd") != 0) | |
2315 | break; | |
2316 | opdsymend = i; | |
2317 | ||
2318 | for (; i < symcount; ++i) | |
2cdcc330 AM |
2319 | if (((syms[i]->section->flags |
2320 | & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL))) | |
a5259595 AM |
2321 | != (SEC_CODE | SEC_ALLOC)) |
2322 | break; | |
2323 | symcount = i; | |
2324 | } | |
c9727e01 | 2325 | count = 0; |
90e3cdf2 | 2326 | |
699733f6 | 2327 | if (relocatable) |
90e3cdf2 | 2328 | { |
699733f6 AM |
2329 | bfd_boolean (*slurp_relocs) (bfd *, asection *, asymbol **, bfd_boolean); |
2330 | arelent *r; | |
2331 | size_t size; | |
0ccf57bd | 2332 | size_t relcount; |
90e3cdf2 | 2333 | |
468392fb AM |
2334 | if (opdsymend == secsymend) |
2335 | goto done; | |
2336 | ||
699733f6 | 2337 | slurp_relocs = get_elf_backend_data (abfd)->s->slurp_reloc_table; |
90e3cdf2 | 2338 | relcount = (opd->flags & SEC_RELOC) ? opd->reloc_count : 0; |
7356fed5 | 2339 | if (relcount == 0) |
c9727e01 | 2340 | goto done; |
90e3cdf2 | 2341 | |
7356fed5 AM |
2342 | if (!(*slurp_relocs) (abfd, opd, static_syms, FALSE)) |
2343 | { | |
2344 | count = -1; | |
2345 | goto done; | |
2346 | } | |
2347 | ||
699733f6 | 2348 | size = 0; |
595da8c5 | 2349 | for (i = secsymend, r = opd->relocation; i < opdsymend; ++i) |
699733f6 AM |
2350 | { |
2351 | asymbol *sym; | |
90e3cdf2 | 2352 | |
595da8c5 | 2353 | while (r < opd->relocation + relcount |
699733f6 AM |
2354 | && r->address < syms[i]->value + opd->vma) |
2355 | ++r; | |
90e3cdf2 | 2356 | |
595da8c5 | 2357 | if (r == opd->relocation + relcount) |
699733f6 | 2358 | break; |
90e3cdf2 | 2359 | |
699733f6 AM |
2360 | if (r->address != syms[i]->value + opd->vma) |
2361 | continue; | |
90e3cdf2 | 2362 | |
699733f6 AM |
2363 | if (r->howto->type != R_PPC64_ADDR64) |
2364 | continue; | |
90e3cdf2 | 2365 | |
699733f6 AM |
2366 | sym = *r->sym_ptr_ptr; |
2367 | if (!sym_exists_at (syms, opdsymend, symcount, | |
2368 | sym->section->id, sym->value + r->addend)) | |
2369 | { | |
2370 | ++count; | |
2371 | size += sizeof (asymbol); | |
2372 | size += strlen (syms[i]->name) + 2; | |
2373 | } | |
2374 | } | |
90e3cdf2 | 2375 | |
c4b0b099 AM |
2376 | if (size == 0) |
2377 | goto done; | |
699733f6 AM |
2378 | s = *ret = bfd_malloc (size); |
2379 | if (s == NULL) | |
2380 | { | |
7356fed5 | 2381 | count = -1; |
c9727e01 | 2382 | goto done; |
699733f6 | 2383 | } |
90e3cdf2 | 2384 | |
699733f6 | 2385 | names = (char *) (s + count); |
90e3cdf2 | 2386 | |
595da8c5 | 2387 | for (i = secsymend, r = opd->relocation; i < opdsymend; ++i) |
90e3cdf2 | 2388 | { |
699733f6 | 2389 | asymbol *sym; |
90e3cdf2 | 2390 | |
595da8c5 | 2391 | while (r < opd->relocation + relcount |
699733f6 AM |
2392 | && r->address < syms[i]->value + opd->vma) |
2393 | ++r; | |
90e3cdf2 | 2394 | |
595da8c5 | 2395 | if (r == opd->relocation + relcount) |
699733f6 AM |
2396 | break; |
2397 | ||
2398 | if (r->address != syms[i]->value + opd->vma) | |
2399 | continue; | |
2400 | ||
2401 | if (r->howto->type != R_PPC64_ADDR64) | |
2402 | continue; | |
90e3cdf2 | 2403 | |
699733f6 AM |
2404 | sym = *r->sym_ptr_ptr; |
2405 | if (!sym_exists_at (syms, opdsymend, symcount, | |
2406 | sym->section->id, sym->value + r->addend)) | |
2407 | { | |
2408 | size_t len; | |
2409 | ||
2410 | *s = *syms[i]; | |
6ba2a415 | 2411 | s->flags |= BSF_SYNTHETIC; |
699733f6 AM |
2412 | s->section = sym->section; |
2413 | s->value = sym->value + r->addend; | |
2414 | s->name = names; | |
2415 | *names++ = '.'; | |
2416 | len = strlen (syms[i]->name); | |
2417 | memcpy (names, syms[i]->name, len + 1); | |
2418 | names += len + 1; | |
6f610d07 UW |
2419 | /* Have udata.p point back to the original symbol this |
2420 | synthetic symbol was derived from. */ | |
2421 | s->udata.p = syms[i]; | |
699733f6 AM |
2422 | s++; |
2423 | } | |
2424 | } | |
2425 | } | |
2426 | else | |
90e3cdf2 | 2427 | { |
468392fb | 2428 | bfd_boolean (*slurp_relocs) (bfd *, asection *, asymbol **, bfd_boolean); |
ee67d69a | 2429 | bfd_byte *contents = NULL; |
699733f6 | 2430 | size_t size; |
0ccf57bd | 2431 | size_t plt_count = 0; |
468392fb AM |
2432 | bfd_vma glink_vma = 0, resolv_vma = 0; |
2433 | asection *dynamic, *glink = NULL, *relplt = NULL; | |
2434 | arelent *p; | |
90e3cdf2 | 2435 | |
ee67d69a | 2436 | if (opd != NULL && !bfd_malloc_and_get_section (abfd, opd, &contents)) |
699733f6 | 2437 | { |
c4b0b099 AM |
2438 | free_contents_and_exit_err: |
2439 | count = -1; | |
ee67d69a | 2440 | free_contents_and_exit: |
c9594989 | 2441 | free (contents); |
c9727e01 | 2442 | goto done; |
699733f6 | 2443 | } |
90e3cdf2 | 2444 | |
699733f6 AM |
2445 | size = 0; |
2446 | for (i = secsymend; i < opdsymend; ++i) | |
2447 | { | |
2448 | bfd_vma ent; | |
90e3cdf2 | 2449 | |
5ef11c02 AM |
2450 | /* Ignore bogus symbols. */ |
2451 | if (syms[i]->value > opd->size - 8) | |
2452 | continue; | |
2453 | ||
699733f6 AM |
2454 | ent = bfd_get_64 (abfd, contents + syms[i]->value); |
2455 | if (!sym_exists_at (syms, opdsymend, symcount, -1, ent)) | |
2456 | { | |
2457 | ++count; | |
2458 | size += sizeof (asymbol); | |
2459 | size += strlen (syms[i]->name) + 2; | |
2460 | } | |
2461 | } | |
90e3cdf2 | 2462 | |
468392fb | 2463 | /* Get start of .glink stubs from DT_PPC64_GLINK. */ |
066ee829 AM |
2464 | if (dyn_count != 0 |
2465 | && (dynamic = bfd_get_section_by_name (abfd, ".dynamic")) != NULL) | |
468392fb AM |
2466 | { |
2467 | bfd_byte *dynbuf, *extdyn, *extdynend; | |
2468 | size_t extdynsize; | |
2469 | void (*swap_dyn_in) (bfd *, const void *, Elf_Internal_Dyn *); | |
2470 | ||
2471 | if (!bfd_malloc_and_get_section (abfd, dynamic, &dynbuf)) | |
c4b0b099 | 2472 | goto free_contents_and_exit_err; |
468392fb AM |
2473 | |
2474 | extdynsize = get_elf_backend_data (abfd)->s->sizeof_dyn; | |
2475 | swap_dyn_in = get_elf_backend_data (abfd)->s->swap_dyn_in; | |
2476 | ||
2477 | extdyn = dynbuf; | |
2478 | extdynend = extdyn + dynamic->size; | |
2479 | for (; extdyn < extdynend; extdyn += extdynsize) | |
2480 | { | |
2481 | Elf_Internal_Dyn dyn; | |
2482 | (*swap_dyn_in) (abfd, extdyn, &dyn); | |
2483 | ||
2484 | if (dyn.d_tag == DT_NULL) | |
2485 | break; | |
2486 | ||
2487 | if (dyn.d_tag == DT_PPC64_GLINK) | |
2488 | { | |
9e390558 AM |
2489 | /* The first glink stub starts at DT_PPC64_GLINK plus 32. |
2490 | See comment in ppc64_elf_finish_dynamic_sections. */ | |
2491 | glink_vma = dyn.d_un.d_val + 8 * 4; | |
468392fb AM |
2492 | /* The .glink section usually does not survive the final |
2493 | link; search for the section (usually .text) where the | |
2494 | glink stubs now reside. */ | |
2495 | glink = bfd_sections_find_if (abfd, section_covers_vma, | |
2496 | &glink_vma); | |
2497 | break; | |
2498 | } | |
2499 | } | |
2500 | ||
2501 | free (dynbuf); | |
2502 | } | |
2503 | ||
2504 | if (glink != NULL) | |
2505 | { | |
2506 | /* Determine __glink trampoline by reading the relative branch | |
2507 | from the first glink stub. */ | |
2508 | bfd_byte buf[4]; | |
b9e5796b AM |
2509 | unsigned int off = 0; |
2510 | ||
2511 | while (bfd_get_section_contents (abfd, glink, buf, | |
2512 | glink_vma + off - glink->vma, 4)) | |
468392fb AM |
2513 | { |
2514 | unsigned int insn = bfd_get_32 (abfd, buf); | |
2515 | insn ^= B_DOT; | |
2516 | if ((insn & ~0x3fffffc) == 0) | |
b9e5796b | 2517 | { |
2cdcc330 AM |
2518 | resolv_vma |
2519 | = glink_vma + off + (insn ^ 0x2000000) - 0x2000000; | |
b9e5796b AM |
2520 | break; |
2521 | } | |
2522 | off += 4; | |
2523 | if (off > 4) | |
2524 | break; | |
468392fb AM |
2525 | } |
2526 | ||
2527 | if (resolv_vma) | |
2528 | size += sizeof (asymbol) + sizeof ("__glink_PLTresolve"); | |
468392fb | 2529 | |
066ee829 AM |
2530 | relplt = bfd_get_section_by_name (abfd, ".rela.plt"); |
2531 | if (relplt != NULL) | |
2532 | { | |
2533 | slurp_relocs = get_elf_backend_data (abfd)->s->slurp_reloc_table; | |
2cdcc330 | 2534 | if (!(*slurp_relocs) (abfd, relplt, dyn_syms, TRUE)) |
c4b0b099 | 2535 | goto free_contents_and_exit_err; |
68ffbac6 | 2536 | |
066ee829 AM |
2537 | plt_count = relplt->size / sizeof (Elf64_External_Rela); |
2538 | size += plt_count * sizeof (asymbol); | |
468392fb | 2539 | |
066ee829 AM |
2540 | p = relplt->relocation; |
2541 | for (i = 0; i < plt_count; i++, p++) | |
e054468f AM |
2542 | { |
2543 | size += strlen ((*p->sym_ptr_ptr)->name) + sizeof ("@plt"); | |
2544 | if (p->addend != 0) | |
2545 | size += sizeof ("+0x") - 1 + 16; | |
2546 | } | |
066ee829 | 2547 | } |
468392fb AM |
2548 | } |
2549 | ||
c4b0b099 AM |
2550 | if (size == 0) |
2551 | goto free_contents_and_exit; | |
699733f6 AM |
2552 | s = *ret = bfd_malloc (size); |
2553 | if (s == NULL) | |
c4b0b099 | 2554 | goto free_contents_and_exit_err; |
90e3cdf2 | 2555 | |
468392fb | 2556 | names = (char *) (s + count + plt_count + (resolv_vma != 0)); |
90e3cdf2 | 2557 | |
699733f6 | 2558 | for (i = secsymend; i < opdsymend; ++i) |
90e3cdf2 | 2559 | { |
699733f6 | 2560 | bfd_vma ent; |
90e3cdf2 | 2561 | |
5ef11c02 AM |
2562 | if (syms[i]->value > opd->size - 8) |
2563 | continue; | |
2564 | ||
699733f6 AM |
2565 | ent = bfd_get_64 (abfd, contents + syms[i]->value); |
2566 | if (!sym_exists_at (syms, opdsymend, symcount, -1, ent)) | |
90e3cdf2 | 2567 | { |
0ccf57bd | 2568 | size_t lo, hi; |
699733f6 | 2569 | size_t len; |
c9727e01 | 2570 | asection *sec = abfd->sections; |
90e3cdf2 | 2571 | |
699733f6 AM |
2572 | *s = *syms[i]; |
2573 | lo = codesecsym; | |
2574 | hi = codesecsymend; | |
2575 | while (lo < hi) | |
2576 | { | |
0ccf57bd | 2577 | size_t mid = (lo + hi) >> 1; |
699733f6 AM |
2578 | if (syms[mid]->section->vma < ent) |
2579 | lo = mid + 1; | |
2580 | else if (syms[mid]->section->vma > ent) | |
2581 | hi = mid; | |
2582 | else | |
c9727e01 AM |
2583 | { |
2584 | sec = syms[mid]->section; | |
2585 | break; | |
2586 | } | |
699733f6 AM |
2587 | } |
2588 | ||
c9727e01 | 2589 | if (lo >= hi && lo > codesecsym) |
699733f6 | 2590 | sec = syms[lo - 1]->section; |
699733f6 AM |
2591 | |
2592 | for (; sec != NULL; sec = sec->next) | |
2593 | { | |
2594 | if (sec->vma > ent) | |
2595 | break; | |
63524580 JK |
2596 | /* SEC_LOAD may not be set if SEC is from a separate debug |
2597 | info file. */ | |
2598 | if ((sec->flags & SEC_ALLOC) == 0) | |
699733f6 AM |
2599 | break; |
2600 | if ((sec->flags & SEC_CODE) != 0) | |
2601 | s->section = sec; | |
2602 | } | |
6ba2a415 | 2603 | s->flags |= BSF_SYNTHETIC; |
699733f6 AM |
2604 | s->value = ent - s->section->vma; |
2605 | s->name = names; | |
2606 | *names++ = '.'; | |
2607 | len = strlen (syms[i]->name); | |
2608 | memcpy (names, syms[i]->name, len + 1); | |
2609 | names += len + 1; | |
6f610d07 UW |
2610 | /* Have udata.p point back to the original symbol this |
2611 | synthetic symbol was derived from. */ | |
2612 | s->udata.p = syms[i]; | |
699733f6 | 2613 | s++; |
90e3cdf2 | 2614 | } |
90e3cdf2 | 2615 | } |
699733f6 | 2616 | free (contents); |
468392fb AM |
2617 | |
2618 | if (glink != NULL && relplt != NULL) | |
2619 | { | |
2620 | if (resolv_vma) | |
2621 | { | |
2622 | /* Add a symbol for the main glink trampoline. */ | |
86a4952b | 2623 | memset (s, 0, sizeof *s); |
468392fb | 2624 | s->the_bfd = abfd; |
6ba2a415 | 2625 | s->flags = BSF_GLOBAL | BSF_SYNTHETIC; |
468392fb AM |
2626 | s->section = glink; |
2627 | s->value = resolv_vma - glink->vma; | |
2628 | s->name = names; | |
2cdcc330 AM |
2629 | memcpy (names, "__glink_PLTresolve", |
2630 | sizeof ("__glink_PLTresolve")); | |
468392fb AM |
2631 | names += sizeof ("__glink_PLTresolve"); |
2632 | s++; | |
2633 | count++; | |
2634 | } | |
2635 | ||
2636 | /* FIXME: It would be very much nicer to put sym@plt on the | |
2637 | stub rather than on the glink branch table entry. The | |
2638 | objdump disassembler would then use a sensible symbol | |
2639 | name on plt calls. The difficulty in doing so is | |
2640 | a) finding the stubs, and, | |
2641 | b) matching stubs against plt entries, and, | |
2642 | c) there can be multiple stubs for a given plt entry. | |
2643 | ||
2644 | Solving (a) could be done by code scanning, but older | |
2645 | ppc64 binaries used different stubs to current code. | |
2646 | (b) is the tricky one since you need to known the toc | |
2647 | pointer for at least one function that uses a pic stub to | |
2648 | be able to calculate the plt address referenced. | |
2649 | (c) means gdb would need to set multiple breakpoints (or | |
2650 | find the glink branch itself) when setting breakpoints | |
2651 | for pending shared library loads. */ | |
2652 | p = relplt->relocation; | |
2653 | for (i = 0; i < plt_count; i++, p++) | |
2654 | { | |
2655 | size_t len; | |
2656 | ||
2657 | *s = **p->sym_ptr_ptr; | |
2658 | /* Undefined syms won't have BSF_LOCAL or BSF_GLOBAL set. Since | |
2659 | we are defining a symbol, ensure one of them is set. */ | |
2660 | if ((s->flags & BSF_LOCAL) == 0) | |
2661 | s->flags |= BSF_GLOBAL; | |
6ba2a415 | 2662 | s->flags |= BSF_SYNTHETIC; |
468392fb AM |
2663 | s->section = glink; |
2664 | s->value = glink_vma - glink->vma; | |
2665 | s->name = names; | |
2666 | s->udata.p = NULL; | |
2667 | len = strlen ((*p->sym_ptr_ptr)->name); | |
2668 | memcpy (names, (*p->sym_ptr_ptr)->name, len); | |
2669 | names += len; | |
e054468f AM |
2670 | if (p->addend != 0) |
2671 | { | |
2672 | memcpy (names, "+0x", sizeof ("+0x") - 1); | |
2673 | names += sizeof ("+0x") - 1; | |
2674 | bfd_sprintf_vma (abfd, names, p->addend); | |
2675 | names += strlen (names); | |
2676 | } | |
468392fb AM |
2677 | memcpy (names, "@plt", sizeof ("@plt")); |
2678 | names += sizeof ("@plt"); | |
2679 | s++; | |
b9e5796b AM |
2680 | if (abi < 2) |
2681 | { | |
2682 | glink_vma += 8; | |
2683 | if (i >= 0x8000) | |
2684 | glink_vma += 4; | |
2685 | } | |
2686 | else | |
468392fb AM |
2687 | glink_vma += 4; |
2688 | } | |
2689 | count += plt_count; | |
2690 | } | |
90e3cdf2 JJ |
2691 | } |
2692 | ||
c9727e01 | 2693 | done: |
a7535cf3 | 2694 | free (syms); |
90e3cdf2 JJ |
2695 | return count; |
2696 | } | |
5bd4f169 | 2697 | \f |
65f38f15 AM |
2698 | /* The following functions are specific to the ELF linker, while |
2699 | functions above are used generally. Those named ppc64_elf_* are | |
2700 | called by the main ELF linker code. They appear in this file more | |
2701 | or less in the order in which they are called. eg. | |
2702 | ppc64_elf_check_relocs is called early in the link process, | |
2703 | ppc64_elf_finish_dynamic_sections is one of the last functions | |
e86ce104 AM |
2704 | called. |
2705 | ||
2706 | PowerPC64-ELF uses a similar scheme to PowerPC64-XCOFF in that | |
2707 | functions have both a function code symbol and a function descriptor | |
2708 | symbol. A call to foo in a relocatable object file looks like: | |
2709 | ||
2710 | . .text | |
2711 | . x: | |
2712 | . bl .foo | |
2713 | . nop | |
2714 | ||
2715 | The function definition in another object file might be: | |
2716 | ||
2717 | . .section .opd | |
2718 | . foo: .quad .foo | |
2719 | . .quad .TOC.@tocbase | |
2720 | . .quad 0 | |
2721 | . | |
2722 | . .text | |
2723 | . .foo: blr | |
2724 | ||
2725 | When the linker resolves the call during a static link, the branch | |
2726 | unsurprisingly just goes to .foo and the .opd information is unused. | |
2727 | If the function definition is in a shared library, things are a little | |
2728 | different: The call goes via a plt call stub, the opd information gets | |
2729 | copied to the plt, and the linker patches the nop. | |
2730 | ||
2731 | . x: | |
2732 | . bl .foo_stub | |
2733 | . ld 2,40(1) | |
2734 | . | |
2735 | . | |
2736 | . .foo_stub: | |
71a39c98 AM |
2737 | . std 2,40(1) # in practice, the call stub |
2738 | . addis 11,2,Lfoo@toc@ha # is slightly optimized, but | |
2739 | . addi 11,11,Lfoo@toc@l # this is the general idea | |
2740 | . ld 12,0(11) | |
2741 | . ld 2,8(11) | |
2742 | . mtctr 12 | |
2743 | . ld 11,16(11) | |
e86ce104 AM |
2744 | . bctr |
2745 | . | |
2746 | . .section .plt | |
2747 | . Lfoo: reloc (R_PPC64_JMP_SLOT, foo) | |
2748 | ||
2749 | The "reloc ()" notation is supposed to indicate that the linker emits | |
2750 | an R_PPC64_JMP_SLOT reloc against foo. The dynamic linker does the opd | |
2751 | copying. | |
2752 | ||
2753 | What are the difficulties here? Well, firstly, the relocations | |
2754 | examined by the linker in check_relocs are against the function code | |
2755 | sym .foo, while the dynamic relocation in the plt is emitted against | |
2756 | the function descriptor symbol, foo. Somewhere along the line, we need | |
2757 | to carefully copy dynamic link information from one symbol to the other. | |
2758 | Secondly, the generic part of the elf linker will make .foo a dynamic | |
2759 | symbol as is normal for most other backends. We need foo dynamic | |
2760 | instead, at least for an application final link. However, when | |
2761 | creating a shared library containing foo, we need to have both symbols | |
2762 | dynamic so that references to .foo are satisfied during the early | |
2763 | stages of linking. Otherwise the linker might decide to pull in a | |
8387904d AM |
2764 | definition from some other object, eg. a static library. |
2765 | ||
2766 | Update: As of August 2004, we support a new convention. Function | |
2767 | calls may use the function descriptor symbol, ie. "bl foo". This | |
2768 | behaves exactly as "bl .foo". */ | |
65f38f15 | 2769 | |
7c8bbca5 AM |
2770 | /* Of those relocs that might be copied as dynamic relocs, this |
2771 | function selects those that must be copied when linking a shared | |
2772 | library or PIE, even when the symbol is local. */ | |
65f38f15 | 2773 | |
1d483afe AM |
2774 | static int |
2775 | must_be_dyn_reloc (struct bfd_link_info *info, | |
2776 | enum elf_ppc64_reloc_type r_type) | |
2777 | { | |
2778 | switch (r_type) | |
2779 | { | |
2780 | default: | |
7c8bbca5 AM |
2781 | /* Only relative relocs can be resolved when the object load |
2782 | address isn't fixed. DTPREL64 is excluded because the | |
2783 | dynamic linker needs to differentiate global dynamic from | |
2784 | local dynamic __tls_index pairs when PPC64_OPT_TLS is set. */ | |
1d483afe AM |
2785 | return 1; |
2786 | ||
2787 | case R_PPC64_REL32: | |
2788 | case R_PPC64_REL64: | |
2789 | case R_PPC64_REL30: | |
1bdd8fac AM |
2790 | case R_PPC64_TOC16: |
2791 | case R_PPC64_TOC16_DS: | |
2792 | case R_PPC64_TOC16_LO: | |
2793 | case R_PPC64_TOC16_HI: | |
2794 | case R_PPC64_TOC16_HA: | |
2795 | case R_PPC64_TOC16_LO_DS: | |
1d483afe AM |
2796 | return 0; |
2797 | ||
2798 | case R_PPC64_TPREL16: | |
2799 | case R_PPC64_TPREL16_LO: | |
2800 | case R_PPC64_TPREL16_HI: | |
2801 | case R_PPC64_TPREL16_HA: | |
2802 | case R_PPC64_TPREL16_DS: | |
2803 | case R_PPC64_TPREL16_LO_DS: | |
f9c6b907 AM |
2804 | case R_PPC64_TPREL16_HIGH: |
2805 | case R_PPC64_TPREL16_HIGHA: | |
1d483afe AM |
2806 | case R_PPC64_TPREL16_HIGHER: |
2807 | case R_PPC64_TPREL16_HIGHERA: | |
2808 | case R_PPC64_TPREL16_HIGHEST: | |
2809 | case R_PPC64_TPREL16_HIGHESTA: | |
2810 | case R_PPC64_TPREL64: | |
c213164a | 2811 | case R_PPC64_TPREL34: |
7c8bbca5 AM |
2812 | /* These relocations are relative but in a shared library the |
2813 | linker doesn't know the thread pointer base. */ | |
2814 | return bfd_link_dll (info); | |
1d483afe AM |
2815 | } |
2816 | } | |
65f38f15 | 2817 | |
f4656909 | 2818 | /* If ELIMINATE_COPY_RELOCS is non-zero, the linker will try to avoid |
e1c6cf61 | 2819 | copying dynamic variables from a shared lib into an app's .dynbss |
f4656909 | 2820 | section, and instead use a dynamic relocation to point into the |
e1c6cf61 AM |
2821 | shared lib. With code that gcc generates it is vital that this be |
2822 | enabled; In the PowerPC64 ELFv1 ABI the address of a function is | |
2823 | actually the address of a function descriptor which resides in the | |
2824 | .opd section. gcc uses the descriptor directly rather than going | |
2825 | via the GOT as some other ABIs do, which means that initialized | |
2826 | function pointers reference the descriptor. Thus, a function | |
2827 | pointer initialized to the address of a function in a shared | |
2828 | library will either require a .dynbss copy and a copy reloc, or a | |
2829 | dynamic reloc. Using a .dynbss copy redefines the function | |
2830 | descriptor symbol to point to the copy. This presents a problem as | |
2831 | a PLT entry for that function is also initialized from the function | |
2832 | descriptor symbol and the copy may not be initialized first. */ | |
a23b6845 | 2833 | #define ELIMINATE_COPY_RELOCS 1 |
f4656909 | 2834 | |
721956f4 | 2835 | /* Section name for stubs is the associated section name plus this |
29942be8 NC |
2836 | string. */ |
2837 | #define STUB_SUFFIX ".stub" | |
721956f4 AM |
2838 | |
2839 | /* Linker stubs. | |
2840 | ppc_stub_long_branch: | |
2841 | Used when a 14 bit branch (or even a 24 bit branch) can't reach its | |
2842 | destination, but a 24 bit branch in a stub section will reach. | |
2843 | . b dest | |
2844 | ||
2845 | ppc_stub_plt_branch: | |
2846 | Similar to the above, but a 24 bit branch in the stub section won't | |
2847 | reach its destination. | |
6df4c9c2 AM |
2848 | . addis %r12,%r2,xxx@toc@ha |
2849 | . ld %r12,xxx@toc@l(%r12) | |
71a39c98 | 2850 | . mtctr %r12 |
721956f4 AM |
2851 | . bctr |
2852 | ||
2853 | ppc_stub_plt_call: | |
2c66dc6c AM |
2854 | Used to call a function in a shared library. If it so happens that |
2855 | the plt entry referenced crosses a 64k boundary, then an extra | |
71a39c98 | 2856 | "addi %r11,%r11,xxx@toc@l" will be inserted before the "mtctr". |
05d0e962 | 2857 | ppc_stub_plt_call_r2save starts with "std %r2,40(%r1)". |
71a39c98 AM |
2858 | . addis %r11,%r2,xxx@toc@ha |
2859 | . ld %r12,xxx+0@toc@l(%r11) | |
2860 | . mtctr %r12 | |
2861 | . ld %r2,xxx+8@toc@l(%r11) | |
2862 | . ld %r11,xxx+16@toc@l(%r11) | |
721956f4 | 2863 | . bctr |
ad8e1ba5 AM |
2864 | |
2865 | ppc_stub_long_branch and ppc_stub_plt_branch may also have additional | |
2866 | code to adjust the value and save r2 to support multiple toc sections. | |
2867 | A ppc_stub_long_branch with an r2 offset looks like: | |
2868 | . std %r2,40(%r1) | |
2869 | . addis %r2,%r2,off@ha | |
2870 | . addi %r2,%r2,off@l | |
2871 | . b dest | |
2872 | ||
2873 | A ppc_stub_plt_branch with an r2 offset looks like: | |
2874 | . std %r2,40(%r1) | |
6df4c9c2 AM |
2875 | . addis %r12,%r2,xxx@toc@ha |
2876 | . ld %r12,xxx@toc@l(%r12) | |
ad8e1ba5 AM |
2877 | . addis %r2,%r2,off@ha |
2878 | . addi %r2,%r2,off@l | |
71a39c98 | 2879 | . mtctr %r12 |
ad8e1ba5 | 2880 | . bctr |
ac2df442 | 2881 | |
05d0e962 AM |
2882 | All of the above stubs are shown as their ELFv1 variants. ELFv2 |
2883 | variants exist too, simpler for plt calls since a new toc pointer | |
2884 | and static chain are not loaded by the stub. In addition, ELFv2 | |
2885 | has some more complex stubs to handle calls marked with NOTOC | |
2886 | relocs from functions where r2 is not a valid toc pointer. These | |
2887 | come in two flavours, the ones shown below, and _both variants that | |
2888 | start with "std %r2,24(%r1)" to save r2 in the unlikely event that | |
2889 | one call is from a function where r2 is used as the toc pointer but | |
2890 | needs a toc adjusting stub for small-model multi-toc, and another | |
2891 | call is from a function where r2 is not valid. | |
2892 | ppc_stub_long_branch_notoc: | |
2893 | . mflr %r12 | |
2894 | . bcl 20,31,1f | |
2895 | . 1: | |
2896 | . mflr %r11 | |
2897 | . mtlr %r12 | |
2cdcc330 AM |
2898 | . addis %r12,%r11,dest-1b@ha |
2899 | . addi %r12,%r12,dest-1b@l | |
05d0e962 AM |
2900 | . b dest |
2901 | ||
2902 | ppc_stub_plt_branch_notoc: | |
2903 | . mflr %r12 | |
2904 | . bcl 20,31,1f | |
2905 | . 1: | |
2906 | . mflr %r11 | |
2907 | . mtlr %r12 | |
2908 | . lis %r12,xxx-1b@highest | |
f891966f | 2909 | . ori %r12,%r12,xxx-1b@higher |
05d0e962 | 2910 | . sldi %r12,%r12,32 |
f891966f | 2911 | . oris %r12,%r12,xxx-1b@high |
05d0e962 AM |
2912 | . ori %r12,%r12,xxx-1b@l |
2913 | . add %r12,%r11,%r12 | |
2914 | . mtctr %r12 | |
2915 | . bctr | |
2916 | ||
2917 | ppc_stub_plt_call_notoc: | |
2918 | . mflr %r12 | |
2919 | . bcl 20,31,1f | |
2920 | . 1: | |
2921 | . mflr %r11 | |
2922 | . mtlr %r12 | |
2923 | . lis %r12,xxx-1b@highest | |
f891966f | 2924 | . ori %r12,%r12,xxx-1b@higher |
05d0e962 | 2925 | . sldi %r12,%r12,32 |
f891966f | 2926 | . oris %r12,%r12,xxx-1b@high |
05d0e962 AM |
2927 | . ori %r12,%r12,xxx-1b@l |
2928 | . ldx %r12,%r11,%r12 | |
2929 | . mtctr %r12 | |
2930 | . bctr | |
2931 | ||
7c1f4227 | 2932 | There are also ELFv1 power10 variants of these stubs. |
04bdff6a | 2933 | ppc_stub_long_branch_notoc: |
d4b87b1e | 2934 | . pla %r12,dest@pcrel |
04bdff6a AM |
2935 | . b dest |
2936 | ppc_stub_plt_branch_notoc: | |
2937 | . lis %r11,(dest-1f)@highesta34 | |
2938 | . ori %r11,%r11,(dest-1f)@highera34 | |
2939 | . sldi %r11,%r11,34 | |
d4b87b1e | 2940 | . 1: pla %r12,dest@pcrel |
04bdff6a AM |
2941 | . add %r12,%r11,%r12 |
2942 | . mtctr %r12 | |
2943 | . bctr | |
2944 | ppc_stub_plt_call_notoc: | |
2945 | . lis %r11,(xxx-1f)@highesta34 | |
2946 | . ori %r11,%r11,(xxx-1f)@highera34 | |
2947 | . sldi %r11,%r11,34 | |
d4b87b1e | 2948 | . 1: pla %r12,xxx@pcrel |
04bdff6a AM |
2949 | . ldx %r12,%r11,%r12 |
2950 | . mtctr %r12 | |
2951 | . bctr | |
2952 | ||
05d0e962 AM |
2953 | In cases where the high instructions would add zero, they are |
2954 | omitted and following instructions modified in some cases. | |
7c1f4227 | 2955 | For example, a power10 ppc_stub_plt_call_notoc might simplify down |
04bdff6a AM |
2956 | to |
2957 | . pld %r12,xxx@pcrel | |
2958 | . mtctr %r12 | |
2959 | . bctr | |
05d0e962 AM |
2960 | |
2961 | For a given stub group (a set of sections all using the same toc | |
2962 | pointer value) there will be just one stub type used for any | |
2963 | particular function symbol. For example, if printf is called from | |
2964 | code with the tocsave optimization (ie. r2 saved in function | |
2965 | prologue) and therefore calls use a ppc_stub_plt_call linkage stub, | |
2966 | and from other code without the tocsave optimization requiring a | |
2967 | ppc_stub_plt_call_r2save linkage stub, a single stub of the latter | |
2968 | type will be created. Calls with the tocsave optimization will | |
2969 | enter this stub after the instruction saving r2. A similar | |
2970 | situation exists when calls are marked with R_PPC64_REL24_NOTOC | |
2971 | relocations. These require a ppc_stub_plt_call_notoc linkage stub | |
2972 | to call an external function like printf. If other calls to printf | |
2973 | require a ppc_stub_plt_call linkage stub then a single | |
2974 | ppc_stub_plt_call_notoc linkage stub will be used for both types of | |
2975 | call. If other calls to printf require a ppc_stub_plt_call_r2save | |
2976 | linkage stub then a single ppc_stub_plt_call_both linkage stub will | |
2977 | be created and calls not requiring r2 to be saved will enter the | |
2978 | stub after the r2 save instruction. There is an analogous | |
2979 | hierarchy of long branch and plt branch stubs for local call | |
2980 | linkage. */ | |
721956f4 | 2981 | |
2cdcc330 AM |
2982 | enum ppc_stub_type |
2983 | { | |
721956f4 AM |
2984 | ppc_stub_none, |
2985 | ppc_stub_long_branch, | |
ad8e1ba5 | 2986 | ppc_stub_long_branch_r2off, |
05d0e962 AM |
2987 | ppc_stub_long_branch_notoc, |
2988 | ppc_stub_long_branch_both, /* r2off and notoc variants both needed. */ | |
721956f4 | 2989 | ppc_stub_plt_branch, |
ad8e1ba5 | 2990 | ppc_stub_plt_branch_r2off, |
05d0e962 AM |
2991 | ppc_stub_plt_branch_notoc, |
2992 | ppc_stub_plt_branch_both, | |
794e51c0 | 2993 | ppc_stub_plt_call, |
7341d5e2 | 2994 | ppc_stub_plt_call_r2save, |
05d0e962 AM |
2995 | ppc_stub_plt_call_notoc, |
2996 | ppc_stub_plt_call_both, | |
a4b6fadd AM |
2997 | ppc_stub_global_entry, |
2998 | ppc_stub_save_res | |
721956f4 AM |
2999 | }; |
3000 | ||
6f20ed8a AM |
3001 | /* Information on stub grouping. */ |
3002 | struct map_stub | |
3003 | { | |
3004 | /* The stub section. */ | |
3005 | asection *stub_sec; | |
3006 | /* This is the section to which stubs in the group will be attached. */ | |
3007 | asection *link_sec; | |
a4b6fadd AM |
3008 | /* Next group. */ |
3009 | struct map_stub *next; | |
3010 | /* Whether to emit a copy of register save/restore functions in this | |
3011 | group. */ | |
3012 | int needs_save_res; | |
df136d64 AM |
3013 | /* Current offset within stubs after the insn restoring lr in a |
3014 | _notoc or _both stub using bcl for pc-relative addressing, or | |
3015 | after the insn restoring lr in a __tls_get_addr_opt plt stub. */ | |
3016 | unsigned int lr_restore; | |
3017 | /* Accumulated size of EH info emitted to describe return address | |
3018 | if stubs modify lr. Does not include 17 byte FDE header. */ | |
3019 | unsigned int eh_size; | |
3020 | /* Offset in glink_eh_frame to the start of EH info for this group. */ | |
3021 | unsigned int eh_base; | |
6f20ed8a AM |
3022 | }; |
3023 | ||
2cdcc330 AM |
3024 | struct ppc_stub_hash_entry |
3025 | { | |
721956f4 AM |
3026 | /* Base hash table entry structure. */ |
3027 | struct bfd_hash_entry root; | |
3028 | ||
ad8e1ba5 AM |
3029 | enum ppc_stub_type stub_type; |
3030 | ||
6f20ed8a AM |
3031 | /* Group information. */ |
3032 | struct map_stub *group; | |
721956f4 AM |
3033 | |
3034 | /* Offset within stub_sec of the beginning of this stub. */ | |
3035 | bfd_vma stub_offset; | |
3036 | ||
3037 | /* Given the symbol's value and its section we can determine its final | |
3038 | value when building the stubs (so the stub knows where to jump. */ | |
3039 | bfd_vma target_value; | |
3040 | asection *target_section; | |
3041 | ||
721956f4 AM |
3042 | /* The symbol table entry, if any, that this was derived from. */ |
3043 | struct ppc_link_hash_entry *h; | |
e054468f | 3044 | struct plt_entry *plt_ent; |
721956f4 | 3045 | |
2d7ad24e AM |
3046 | /* Symbol type. */ |
3047 | unsigned char symtype; | |
3048 | ||
6911b7dc AM |
3049 | /* Symbol st_other. */ |
3050 | unsigned char other; | |
721956f4 AM |
3051 | }; |
3052 | ||
2cdcc330 AM |
3053 | struct ppc_branch_hash_entry |
3054 | { | |
721956f4 AM |
3055 | /* Base hash table entry structure. */ |
3056 | struct bfd_hash_entry root; | |
3057 | ||
c456f082 | 3058 | /* Offset within branch lookup table. */ |
721956f4 AM |
3059 | unsigned int offset; |
3060 | ||
3061 | /* Generation marker. */ | |
3062 | unsigned int iter; | |
3063 | }; | |
65f38f15 | 3064 | |
19e08130 AM |
3065 | /* Used to track dynamic relocations for local symbols. */ |
3066 | struct ppc_dyn_relocs | |
3067 | { | |
3068 | struct ppc_dyn_relocs *next; | |
3069 | ||
3070 | /* The input section of the reloc. */ | |
3071 | asection *sec; | |
3072 | ||
3073 | /* Total number of relocs copied for the input section. */ | |
3074 | unsigned int count : 31; | |
3075 | ||
3076 | /* Whether this entry is for STT_GNU_IFUNC symbols. */ | |
3077 | unsigned int ifunc : 1; | |
3078 | }; | |
3079 | ||
65f38f15 AM |
3080 | struct ppc_link_hash_entry |
3081 | { | |
3082 | struct elf_link_hash_entry elf; | |
3083 | ||
2cdcc330 AM |
3084 | union |
3085 | { | |
b3fac117 AM |
3086 | /* A pointer to the most recently used stub hash entry against this |
3087 | symbol. */ | |
3088 | struct ppc_stub_hash_entry *stub_cache; | |
3089 | ||
3090 | /* A pointer to the next symbol starting with a '.' */ | |
3091 | struct ppc_link_hash_entry *next_dot_sym; | |
3092 | } u; | |
721956f4 | 3093 | |
721956f4 | 3094 | /* Link between function code and descriptor symbols. */ |
34814b9f | 3095 | struct ppc_link_hash_entry *oh; |
721956f4 | 3096 | |
e86ce104 AM |
3097 | /* Flag function code and descriptor symbols. */ |
3098 | unsigned int is_func:1; | |
3099 | unsigned int is_func_descriptor:1; | |
908b32fc | 3100 | unsigned int fake:1; |
411e1bfb | 3101 | |
c5614fa4 AM |
3102 | /* Whether global opd/toc sym has been adjusted or not. |
3103 | After ppc64_elf_edit_opd/ppc64_elf_edit_toc has run, this flag | |
3104 | should be set for all globals defined in any opd/toc section. */ | |
754021d0 AM |
3105 | unsigned int adjust_done:1; |
3106 | ||
a4b6fadd AM |
3107 | /* Set if this is an out-of-line register save/restore function, |
3108 | with non-standard calling convention. */ | |
3109 | unsigned int save_res:1; | |
3110 | ||
8b5f1ed8 AM |
3111 | /* Set if a duplicate symbol with non-zero localentry is detected, |
3112 | even when the duplicate symbol does not provide a definition. */ | |
3113 | unsigned int non_zero_localentry:1; | |
3114 | ||
411e1bfb | 3115 | /* Contexts in which symbol is used in the GOT (or TOC). |
37da22e5 AM |
3116 | Bits are or'd into the mask as the corresponding relocs are |
3117 | encountered during check_relocs, with TLS_TLS being set when any | |
3118 | of the other TLS bits are set. tls_optimize clears bits when | |
3119 | optimizing to indicate the corresponding GOT entry type is not | |
3120 | needed. If set, TLS_TLS is never cleared. tls_optimize may also | |
b00a0a86 | 3121 | set TLS_GDIE when a GD reloc turns into an IE one. |
37da22e5 AM |
3122 | These flags are also kept for local symbols. */ |
3123 | #define TLS_TLS 1 /* Any TLS reloc. */ | |
3124 | #define TLS_GD 2 /* GD reloc. */ | |
3125 | #define TLS_LD 4 /* LD reloc. */ | |
3126 | #define TLS_TPREL 8 /* TPREL reloc, => IE. */ | |
3127 | #define TLS_DTPREL 16 /* DTPREL reloc, => LD. */ | |
3128 | #define TLS_MARK 32 /* __tls_get_addr call marked. */ | |
b00a0a86 | 3129 | #define TLS_GDIE 64 /* GOT TPREL reloc resulting from GD->IE. */ |
46e9995a | 3130 | #define TLS_EXPLICIT 256 /* TOC section TLS reloc, not stored. */ |
f961d9dd | 3131 | unsigned char tls_mask; |
37da22e5 AM |
3132 | |
3133 | /* The above field is also used to mark function symbols. In which | |
3134 | case TLS_TLS will be 0. */ | |
3135 | #define PLT_IFUNC 2 /* STT_GNU_IFUNC. */ | |
2d7ad24e | 3136 | #define PLT_KEEP 4 /* inline plt call requires plt entry. */ |
37da22e5 | 3137 | #define NON_GOT 256 /* local symbol plt, not stored. */ |
65f38f15 AM |
3138 | }; |
3139 | ||
ed7007c1 AM |
3140 | static inline struct ppc_link_hash_entry * |
3141 | ppc_elf_hash_entry (struct elf_link_hash_entry *ent) | |
3142 | { | |
3143 | return (struct ppc_link_hash_entry *) ent; | |
3144 | } | |
3145 | ||
65f38f15 AM |
3146 | /* ppc64 ELF linker hash table. */ |
3147 | ||
3148 | struct ppc_link_hash_table | |
3149 | { | |
3150 | struct elf_link_hash_table elf; | |
3151 | ||
721956f4 AM |
3152 | /* The stub hash table. */ |
3153 | struct bfd_hash_table stub_hash_table; | |
3154 | ||
3155 | /* Another hash table for plt_branch stubs. */ | |
3156 | struct bfd_hash_table branch_hash_table; | |
3157 | ||
3b421ab3 AM |
3158 | /* Hash table for function prologue tocsave. */ |
3159 | htab_t tocsave_htab; | |
3160 | ||
e7d1c40c AM |
3161 | /* Various options and other info passed from the linker. */ |
3162 | struct ppc64_elf_params *params; | |
721956f4 | 3163 | |
6f20ed8a AM |
3164 | /* The size of sec_info below. */ |
3165 | unsigned int sec_info_arr_size; | |
3166 | ||
3167 | /* Per-section array of extra section info. Done this way rather | |
3168 | than as part of ppc64_elf_section_data so we have the info for | |
3169 | non-ppc64 sections. */ | |
3170 | struct | |
3171 | { | |
3172 | /* Along with elf_gp, specifies the TOC pointer used by this section. */ | |
ad8e1ba5 | 3173 | bfd_vma toc_off; |
6f20ed8a AM |
3174 | |
3175 | union | |
3176 | { | |
3177 | /* The section group that this section belongs to. */ | |
3178 | struct map_stub *group; | |
3179 | /* A temp section list pointer. */ | |
3180 | asection *list; | |
3181 | } u; | |
3182 | } *sec_info; | |
721956f4 | 3183 | |
a4b6fadd AM |
3184 | /* Linked list of groups. */ |
3185 | struct map_stub *group; | |
3186 | ||
ad8e1ba5 AM |
3187 | /* Temp used when calculating TOC pointers. */ |
3188 | bfd_vma toc_curr; | |
bf102f86 AM |
3189 | bfd *toc_bfd; |
3190 | asection *toc_first_sec; | |
ad8e1ba5 | 3191 | |
b3fac117 AM |
3192 | /* Used when adding symbols. */ |
3193 | struct ppc_link_hash_entry *dot_syms; | |
3194 | ||
33e44f2e | 3195 | /* Shortcuts to get to dynamic linker sections. */ |
4ce794b7 | 3196 | asection *glink; |
9e390558 | 3197 | asection *global_entry; |
82bd7b59 | 3198 | asection *sfpr; |
2d7ad24e AM |
3199 | asection *pltlocal; |
3200 | asection *relpltlocal; | |
4ce794b7 AM |
3201 | asection *brlt; |
3202 | asection *relbrlt; | |
58d180e8 | 3203 | asection *glink_eh_frame; |
ec338859 | 3204 | |
8387904d AM |
3205 | /* Shortcut to .__tls_get_addr and __tls_get_addr. */ |
3206 | struct ppc_link_hash_entry *tls_get_addr; | |
3207 | struct ppc_link_hash_entry *tls_get_addr_fd; | |
9e7028aa AM |
3208 | struct ppc_link_hash_entry *tga_desc; |
3209 | struct ppc_link_hash_entry *tga_desc_fd; | |
a804e476 | 3210 | struct map_stub *tga_group; |
411e1bfb | 3211 | |
927be08e AM |
3212 | /* The size of reliplt used by got entry relocs. */ |
3213 | bfd_size_type got_reli_size; | |
3214 | ||
9b5ecbd0 | 3215 | /* Statistics. */ |
7341d5e2 | 3216 | unsigned long stub_count[ppc_stub_global_entry]; |
9b5ecbd0 | 3217 | |
ee75fd95 AM |
3218 | /* Number of stubs against global syms. */ |
3219 | unsigned long stub_globals; | |
3220 | ||
ee67d69a AM |
3221 | /* Set if we're linking code with function descriptors. */ |
3222 | unsigned int opd_abi:1; | |
3223 | ||
4c52953f | 3224 | /* Support for multiple toc sections. */ |
33c0ec9d | 3225 | unsigned int do_multi_toc:1; |
4c52953f | 3226 | unsigned int multi_toc_needed:1; |
927be08e | 3227 | unsigned int second_toc_pass:1; |
67f0cbdb | 3228 | unsigned int do_toc_opt:1; |
4c52953f | 3229 | |
9a23f96e AM |
3230 | /* Set if tls optimization is enabled. */ |
3231 | unsigned int do_tls_opt:1; | |
3232 | ||
3e04d765 AM |
3233 | /* Set if inline plt calls should be converted to direct calls. */ |
3234 | unsigned int can_convert_all_inline_plt:1; | |
3235 | ||
5d1634d7 | 3236 | /* Set on error. */ |
99877b66 | 3237 | unsigned int stub_error:1; |
721956f4 | 3238 | |
8c5b4e52 AM |
3239 | /* Whether func_desc_adjust needs to be run over symbols. */ |
3240 | unsigned int need_func_desc_adj:1; | |
721956f4 | 3241 | |
f378ab09 AM |
3242 | /* Whether plt calls for ELFv2 localentry:0 funcs have been optimized. */ |
3243 | unsigned int has_plt_localentry0:1; | |
3244 | ||
5663e321 AM |
3245 | /* Whether calls are made via the PLT from NOTOC functions. */ |
3246 | unsigned int notoc_plt:1; | |
3247 | ||
e10a07b3 AM |
3248 | /* Whether any code linked seems to be Power10. */ |
3249 | unsigned int has_power10_relocs:1; | |
3250 | ||
721956f4 AM |
3251 | /* Incremented every time we size stubs. */ |
3252 | unsigned int stub_iteration; | |
65f38f15 AM |
3253 | }; |
3254 | ||
4c52953f AM |
3255 | /* Rename some of the generic section flags to better document how they |
3256 | are used here. */ | |
b0dddeec AM |
3257 | |
3258 | /* Nonzero if this section has TLS related relocations. */ | |
3259 | #define has_tls_reloc sec_flg0 | |
3260 | ||
9737e8af AM |
3261 | /* Nonzero if this section has a call to __tls_get_addr lacking marker |
3262 | relocations. */ | |
3263 | #define nomark_tls_get_addr sec_flg1 | |
b0dddeec AM |
3264 | |
3265 | /* Nonzero if this section has any toc or got relocs. */ | |
3266 | #define has_toc_reloc sec_flg2 | |
3267 | ||
3268 | /* Nonzero if this section has a call to another section that uses | |
3269 | the toc or got. */ | |
d77c8a4b | 3270 | #define makes_toc_func_call sec_flg3 |
b0dddeec AM |
3271 | |
3272 | /* Recursion protection when determining above flag. */ | |
d77c8a4b | 3273 | #define call_check_in_progress sec_flg4 |
70cc837d | 3274 | #define call_check_done sec_flg5 |
4c52953f | 3275 | |
65f38f15 AM |
3276 | /* Get the ppc64 ELF linker hash table from a link_info structure. */ |
3277 | ||
3278 | #define ppc_hash_table(p) \ | |
4dfe6ac6 NC |
3279 | (elf_hash_table_id ((struct elf_link_hash_table *) ((p)->hash)) \ |
3280 | == PPC64_ELF_DATA ? ((struct ppc_link_hash_table *) ((p)->hash)) : NULL) | |
65f38f15 | 3281 | |
721956f4 AM |
3282 | #define ppc_stub_hash_lookup(table, string, create, copy) \ |
3283 | ((struct ppc_stub_hash_entry *) \ | |
3284 | bfd_hash_lookup ((table), (string), (create), (copy))) | |
3285 | ||
3286 | #define ppc_branch_hash_lookup(table, string, create, copy) \ | |
3287 | ((struct ppc_branch_hash_entry *) \ | |
3288 | bfd_hash_lookup ((table), (string), (create), (copy))) | |
3289 | ||
3290 | /* Create an entry in the stub hash table. */ | |
3291 | ||
3292 | static struct bfd_hash_entry * | |
4ce794b7 AM |
3293 | stub_hash_newfunc (struct bfd_hash_entry *entry, |
3294 | struct bfd_hash_table *table, | |
3295 | const char *string) | |
721956f4 AM |
3296 | { |
3297 | /* Allocate the structure if it has not already been allocated by a | |
3298 | subclass. */ | |
3299 | if (entry == NULL) | |
3300 | { | |
3301 | entry = bfd_hash_allocate (table, sizeof (struct ppc_stub_hash_entry)); | |
3302 | if (entry == NULL) | |
3303 | return entry; | |
3304 | } | |
3305 | ||
3306 | /* Call the allocation method of the superclass. */ | |
3307 | entry = bfd_hash_newfunc (entry, table, string); | |
3308 | if (entry != NULL) | |
3309 | { | |
3310 | struct ppc_stub_hash_entry *eh; | |
3311 | ||
3312 | /* Initialize the local fields. */ | |
3313 | eh = (struct ppc_stub_hash_entry *) entry; | |
ad8e1ba5 | 3314 | eh->stub_type = ppc_stub_none; |
6f20ed8a | 3315 | eh->group = NULL; |
721956f4 AM |
3316 | eh->stub_offset = 0; |
3317 | eh->target_value = 0; | |
3318 | eh->target_section = NULL; | |
721956f4 | 3319 | eh->h = NULL; |
6911b7dc | 3320 | eh->plt_ent = NULL; |
6911b7dc | 3321 | eh->other = 0; |
721956f4 AM |
3322 | } |
3323 | ||
3324 | return entry; | |
3325 | } | |
3326 | ||
3327 | /* Create an entry in the branch hash table. */ | |
3328 | ||
3329 | static struct bfd_hash_entry * | |
4ce794b7 AM |
3330 | branch_hash_newfunc (struct bfd_hash_entry *entry, |
3331 | struct bfd_hash_table *table, | |
3332 | const char *string) | |
721956f4 AM |
3333 | { |
3334 | /* Allocate the structure if it has not already been allocated by a | |
3335 | subclass. */ | |
3336 | if (entry == NULL) | |
3337 | { | |
3338 | entry = bfd_hash_allocate (table, sizeof (struct ppc_branch_hash_entry)); | |
3339 | if (entry == NULL) | |
3340 | return entry; | |
3341 | } | |
3342 | ||
3343 | /* Call the allocation method of the superclass. */ | |
3344 | entry = bfd_hash_newfunc (entry, table, string); | |
3345 | if (entry != NULL) | |
3346 | { | |
3347 | struct ppc_branch_hash_entry *eh; | |
3348 | ||
3349 | /* Initialize the local fields. */ | |
3350 | eh = (struct ppc_branch_hash_entry *) entry; | |
3351 | eh->offset = 0; | |
3352 | eh->iter = 0; | |
3353 | } | |
3354 | ||
3355 | return entry; | |
3356 | } | |
3357 | ||
65f38f15 AM |
3358 | /* Create an entry in a ppc64 ELF linker hash table. */ |
3359 | ||
3360 | static struct bfd_hash_entry * | |
4ce794b7 AM |
3361 | link_hash_newfunc (struct bfd_hash_entry *entry, |
3362 | struct bfd_hash_table *table, | |
3363 | const char *string) | |
65f38f15 AM |
3364 | { |
3365 | /* Allocate the structure if it has not already been allocated by a | |
3366 | subclass. */ | |
3367 | if (entry == NULL) | |
3368 | { | |
3369 | entry = bfd_hash_allocate (table, sizeof (struct ppc_link_hash_entry)); | |
3370 | if (entry == NULL) | |
3371 | return entry; | |
3372 | } | |
3373 | ||
3374 | /* Call the allocation method of the superclass. */ | |
3375 | entry = _bfd_elf_link_hash_newfunc (entry, table, string); | |
3376 | if (entry != NULL) | |
3377 | { | |
3378 | struct ppc_link_hash_entry *eh = (struct ppc_link_hash_entry *) entry; | |
3379 | ||
b3fac117 | 3380 | memset (&eh->u.stub_cache, 0, |
908b32fc | 3381 | (sizeof (struct ppc_link_hash_entry) |
b3fac117 AM |
3382 | - offsetof (struct ppc_link_hash_entry, u.stub_cache))); |
3383 | ||
3384 | /* When making function calls, old ABI code references function entry | |
3385 | points (dot symbols), while new ABI code references the function | |
3386 | descriptor symbol. We need to make any combination of reference and | |
3387 | definition work together, without breaking archive linking. | |
3388 | ||
3389 | For a defined function "foo" and an undefined call to "bar": | |
3390 | An old object defines "foo" and ".foo", references ".bar" (possibly | |
3391 | "bar" too). | |
3392 | A new object defines "foo" and references "bar". | |
3393 | ||
3394 | A new object thus has no problem with its undefined symbols being | |
3395 | satisfied by definitions in an old object. On the other hand, the | |
3396 | old object won't have ".bar" satisfied by a new object. | |
3397 | ||
3398 | Keep a list of newly added dot-symbols. */ | |
3399 | ||
3400 | if (string[0] == '.') | |
3401 | { | |
3402 | struct ppc_link_hash_table *htab; | |
3403 | ||
3404 | htab = (struct ppc_link_hash_table *) table; | |
3405 | eh->u.next_dot_sym = htab->dot_syms; | |
3406 | htab->dot_syms = eh; | |
3407 | } | |
65f38f15 AM |
3408 | } |
3409 | ||
3410 | return entry; | |
3411 | } | |
3412 | ||
2cdcc330 AM |
3413 | struct tocsave_entry |
3414 | { | |
3b421ab3 AM |
3415 | asection *sec; |
3416 | bfd_vma offset; | |
3417 | }; | |
3418 | ||
3419 | static hashval_t | |
3420 | tocsave_htab_hash (const void *p) | |
3421 | { | |
3422 | const struct tocsave_entry *e = (const struct tocsave_entry *) p; | |
4aef7643 | 3423 | return ((bfd_vma) (intptr_t) e->sec ^ e->offset) >> 3; |
3b421ab3 AM |
3424 | } |
3425 | ||
3426 | static int | |
3427 | tocsave_htab_eq (const void *p1, const void *p2) | |
3428 | { | |
3429 | const struct tocsave_entry *e1 = (const struct tocsave_entry *) p1; | |
3430 | const struct tocsave_entry *e2 = (const struct tocsave_entry *) p2; | |
3431 | return e1->sec == e2->sec && e1->offset == e2->offset; | |
3432 | } | |
3433 | ||
68faa637 AM |
3434 | /* Destroy a ppc64 ELF linker hash table. */ |
3435 | ||
3436 | static void | |
d495ab0d | 3437 | ppc64_elf_link_hash_table_free (bfd *obfd) |
68faa637 | 3438 | { |
d495ab0d | 3439 | struct ppc_link_hash_table *htab; |
68faa637 | 3440 | |
d495ab0d | 3441 | htab = (struct ppc_link_hash_table *) obfd->link.hash; |
68faa637 AM |
3442 | if (htab->tocsave_htab) |
3443 | htab_delete (htab->tocsave_htab); | |
d495ab0d AM |
3444 | bfd_hash_table_free (&htab->branch_hash_table); |
3445 | bfd_hash_table_free (&htab->stub_hash_table); | |
3446 | _bfd_elf_link_hash_table_free (obfd); | |
68faa637 AM |
3447 | } |
3448 | ||
65f38f15 AM |
3449 | /* Create a ppc64 ELF linker hash table. */ |
3450 | ||
3451 | static struct bfd_link_hash_table * | |
4ce794b7 | 3452 | ppc64_elf_link_hash_table_create (bfd *abfd) |
65f38f15 AM |
3453 | { |
3454 | struct ppc_link_hash_table *htab; | |
986f0783 | 3455 | size_t amt = sizeof (struct ppc_link_hash_table); |
65f38f15 | 3456 | |
4ce794b7 | 3457 | htab = bfd_zmalloc (amt); |
65f38f15 AM |
3458 | if (htab == NULL) |
3459 | return NULL; | |
3460 | ||
66eb6687 | 3461 | if (!_bfd_elf_link_hash_table_init (&htab->elf, abfd, link_hash_newfunc, |
4dfe6ac6 NC |
3462 | sizeof (struct ppc_link_hash_entry), |
3463 | PPC64_ELF_DATA)) | |
65f38f15 | 3464 | { |
e2d34d7d | 3465 | free (htab); |
65f38f15 AM |
3466 | return NULL; |
3467 | } | |
3468 | ||
721956f4 | 3469 | /* Init the stub hash table too. */ |
66eb6687 AM |
3470 | if (!bfd_hash_table_init (&htab->stub_hash_table, stub_hash_newfunc, |
3471 | sizeof (struct ppc_stub_hash_entry))) | |
2915c55b | 3472 | { |
d495ab0d | 3473 | _bfd_elf_link_hash_table_free (abfd); |
2915c55b JK |
3474 | return NULL; |
3475 | } | |
721956f4 AM |
3476 | |
3477 | /* And the branch hash table. */ | |
66eb6687 AM |
3478 | if (!bfd_hash_table_init (&htab->branch_hash_table, branch_hash_newfunc, |
3479 | sizeof (struct ppc_branch_hash_entry))) | |
2915c55b JK |
3480 | { |
3481 | bfd_hash_table_free (&htab->stub_hash_table); | |
d495ab0d | 3482 | _bfd_elf_link_hash_table_free (abfd); |
2915c55b JK |
3483 | return NULL; |
3484 | } | |
721956f4 | 3485 | |
3b421ab3 AM |
3486 | htab->tocsave_htab = htab_try_create (1024, |
3487 | tocsave_htab_hash, | |
3488 | tocsave_htab_eq, | |
3489 | NULL); | |
3490 | if (htab->tocsave_htab == NULL) | |
2915c55b | 3491 | { |
d495ab0d | 3492 | ppc64_elf_link_hash_table_free (abfd); |
2915c55b JK |
3493 | return NULL; |
3494 | } | |
d495ab0d | 3495 | htab->elf.root.hash_table_free = ppc64_elf_link_hash_table_free; |
3b421ab3 | 3496 | |
3254fd24 AM |
3497 | /* Initializing two fields of the union is just cosmetic. We really |
3498 | only care about glist, but when compiled on a 32-bit host the | |
3499 | bfd_vma fields are larger. Setting the bfd_vma to zero makes | |
3500 | debugger inspection of these fields look nicer. */ | |
a6aa5195 AM |
3501 | htab->elf.init_got_refcount.refcount = 0; |
3502 | htab->elf.init_got_refcount.glist = NULL; | |
3503 | htab->elf.init_plt_refcount.refcount = 0; | |
3504 | htab->elf.init_plt_refcount.glist = NULL; | |
3505 | htab->elf.init_got_offset.offset = 0; | |
3506 | htab->elf.init_got_offset.glist = NULL; | |
3507 | htab->elf.init_plt_offset.offset = 0; | |
3508 | htab->elf.init_plt_offset.glist = NULL; | |
3254fd24 | 3509 | |
65f38f15 AM |
3510 | return &htab->elf.root; |
3511 | } | |
3512 | ||
bfeb4a28 AM |
3513 | /* Create sections for linker generated code. */ |
3514 | ||
3515 | static bfd_boolean | |
3516 | create_linkage_sections (bfd *dynobj, struct bfd_link_info *info) | |
3517 | { | |
3518 | struct ppc_link_hash_table *htab; | |
3519 | flagword flags; | |
3520 | ||
3521 | htab = ppc_hash_table (info); | |
3522 | ||
bfeb4a28 AM |
3523 | flags = (SEC_ALLOC | SEC_LOAD | SEC_CODE | SEC_READONLY |
3524 | | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED); | |
b32547cd AM |
3525 | if (htab->params->save_restore_funcs) |
3526 | { | |
3527 | /* Create .sfpr for code to save and restore fp regs. */ | |
3528 | htab->sfpr = bfd_make_section_anyway_with_flags (dynobj, ".sfpr", | |
3529 | flags); | |
3530 | if (htab->sfpr == NULL | |
fd361982 | 3531 | || !bfd_set_section_alignment (htab->sfpr, 2)) |
b32547cd AM |
3532 | return FALSE; |
3533 | } | |
3534 | ||
3535 | if (bfd_link_relocatable (info)) | |
3536 | return TRUE; | |
bfeb4a28 AM |
3537 | |
3538 | /* Create .glink for lazy dynamic linking support. */ | |
3539 | htab->glink = bfd_make_section_anyway_with_flags (dynobj, ".glink", | |
3540 | flags); | |
3541 | if (htab->glink == NULL | |
fd361982 | 3542 | || !bfd_set_section_alignment (htab->glink, 3)) |
bfeb4a28 AM |
3543 | return FALSE; |
3544 | ||
9e390558 AM |
3545 | /* The part of .glink used by global entry stubs, separate so that |
3546 | it can be aligned appropriately without affecting htab->glink. */ | |
3547 | htab->global_entry = bfd_make_section_anyway_with_flags (dynobj, ".glink", | |
3548 | flags); | |
3549 | if (htab->global_entry == NULL | |
fd361982 | 3550 | || !bfd_set_section_alignment (htab->global_entry, 2)) |
9e390558 AM |
3551 | return FALSE; |
3552 | ||
bfeb4a28 AM |
3553 | if (!info->no_ld_generated_unwind_info) |
3554 | { | |
3555 | flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_HAS_CONTENTS | |
3556 | | SEC_IN_MEMORY | SEC_LINKER_CREATED); | |
3557 | htab->glink_eh_frame = bfd_make_section_anyway_with_flags (dynobj, | |
3558 | ".eh_frame", | |
3559 | flags); | |
3560 | if (htab->glink_eh_frame == NULL | |
fd361982 | 3561 | || !bfd_set_section_alignment (htab->glink_eh_frame, 2)) |
bfeb4a28 AM |
3562 | return FALSE; |
3563 | } | |
3564 | ||
3565 | flags = SEC_ALLOC | SEC_LINKER_CREATED; | |
33e44f2e AM |
3566 | htab->elf.iplt = bfd_make_section_anyway_with_flags (dynobj, ".iplt", flags); |
3567 | if (htab->elf.iplt == NULL | |
fd361982 | 3568 | || !bfd_set_section_alignment (htab->elf.iplt, 3)) |
bfeb4a28 AM |
3569 | return FALSE; |
3570 | ||
3571 | flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY | |
3572 | | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED); | |
33e44f2e AM |
3573 | htab->elf.irelplt |
3574 | = bfd_make_section_anyway_with_flags (dynobj, ".rela.iplt", flags); | |
3575 | if (htab->elf.irelplt == NULL | |
fd361982 | 3576 | || !bfd_set_section_alignment (htab->elf.irelplt, 3)) |
bfeb4a28 AM |
3577 | return FALSE; |
3578 | ||
3579 | /* Create branch lookup table for plt_branch stubs. */ | |
3580 | flags = (SEC_ALLOC | SEC_LOAD | |
3581 | | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED); | |
3582 | htab->brlt = bfd_make_section_anyway_with_flags (dynobj, ".branch_lt", | |
3583 | flags); | |
3584 | if (htab->brlt == NULL | |
fd361982 | 3585 | || !bfd_set_section_alignment (htab->brlt, 3)) |
bfeb4a28 AM |
3586 | return FALSE; |
3587 | ||
2d7ad24e AM |
3588 | /* Local plt entries, put in .branch_lt but a separate section for |
3589 | convenience. */ | |
3590 | htab->pltlocal = bfd_make_section_anyway_with_flags (dynobj, ".branch_lt", | |
3591 | flags); | |
3592 | if (htab->pltlocal == NULL | |
fd361982 | 3593 | || !bfd_set_section_alignment (htab->pltlocal, 3)) |
2d7ad24e AM |
3594 | return FALSE; |
3595 | ||
0e1862bb | 3596 | if (!bfd_link_pic (info)) |
bfeb4a28 AM |
3597 | return TRUE; |
3598 | ||
3599 | flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY | |
3600 | | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED); | |
2d7ad24e AM |
3601 | htab->relbrlt |
3602 | = bfd_make_section_anyway_with_flags (dynobj, ".rela.branch_lt", flags); | |
bfeb4a28 | 3603 | if (htab->relbrlt == NULL |
fd361982 | 3604 | || !bfd_set_section_alignment (htab->relbrlt, 3)) |
bfeb4a28 AM |
3605 | return FALSE; |
3606 | ||
2d7ad24e AM |
3607 | htab->relpltlocal |
3608 | = bfd_make_section_anyway_with_flags (dynobj, ".rela.branch_lt", flags); | |
3609 | if (htab->relpltlocal == NULL | |
fd361982 | 3610 | || !bfd_set_section_alignment (htab->relpltlocal, 3)) |
2d7ad24e AM |
3611 | return FALSE; |
3612 | ||
bfeb4a28 AM |
3613 | return TRUE; |
3614 | } | |
3615 | ||
e717da7e AM |
3616 | /* Satisfy the ELF linker by filling in some fields in our fake bfd. */ |
3617 | ||
bfeb4a28 | 3618 | bfd_boolean |
e7d1c40c AM |
3619 | ppc64_elf_init_stub_bfd (struct bfd_link_info *info, |
3620 | struct ppc64_elf_params *params) | |
e717da7e AM |
3621 | { |
3622 | struct ppc_link_hash_table *htab; | |
3623 | ||
e7d1c40c | 3624 | elf_elfheader (params->stub_bfd)->e_ident[EI_CLASS] = ELFCLASS64; |
e717da7e AM |
3625 | |
3626 | /* Always hook our dynamic sections into the first bfd, which is the | |
3627 | linker created stub bfd. This ensures that the GOT header is at | |
3628 | the start of the output TOC section. */ | |
3629 | htab = ppc_hash_table (info); | |
e7d1c40c AM |
3630 | htab->elf.dynobj = params->stub_bfd; |
3631 | htab->params = params; | |
bfeb4a28 | 3632 | |
bfeb4a28 | 3633 | return create_linkage_sections (htab->elf.dynobj, info); |
e717da7e AM |
3634 | } |
3635 | ||
721956f4 AM |
3636 | /* Build a name for an entry in the stub hash table. */ |
3637 | ||
3638 | static char * | |
4ce794b7 AM |
3639 | ppc_stub_name (const asection *input_section, |
3640 | const asection *sym_sec, | |
3641 | const struct ppc_link_hash_entry *h, | |
3642 | const Elf_Internal_Rela *rel) | |
721956f4 AM |
3643 | { |
3644 | char *stub_name; | |
bcaa2f82 | 3645 | ssize_t len; |
721956f4 AM |
3646 | |
3647 | /* rel->r_addend is actually 64 bit, but who uses more than +/- 2^31 | |
3648 | offsets from a sym as a branch target? In fact, we could | |
3649 | probably assume the addend is always zero. */ | |
3650 | BFD_ASSERT (((int) rel->r_addend & 0xffffffff) == rel->r_addend); | |
3651 | ||
3652 | if (h) | |
3653 | { | |
3654 | len = 8 + 1 + strlen (h->elf.root.root.string) + 1 + 8 + 1; | |
3655 | stub_name = bfd_malloc (len); | |
46de2a7c AM |
3656 | if (stub_name == NULL) |
3657 | return stub_name; | |
3658 | ||
bcaa2f82 AM |
3659 | len = sprintf (stub_name, "%08x.%s+%x", |
3660 | input_section->id & 0xffffffff, | |
3661 | h->elf.root.root.string, | |
3662 | (int) rel->r_addend & 0xffffffff); | |
721956f4 AM |
3663 | } |
3664 | else | |
3665 | { | |
ad8e1ba5 | 3666 | len = 8 + 1 + 8 + 1 + 8 + 1 + 8 + 1; |
721956f4 | 3667 | stub_name = bfd_malloc (len); |
46de2a7c AM |
3668 | if (stub_name == NULL) |
3669 | return stub_name; | |
3670 | ||
bcaa2f82 AM |
3671 | len = sprintf (stub_name, "%08x.%x:%x+%x", |
3672 | input_section->id & 0xffffffff, | |
3673 | sym_sec->id & 0xffffffff, | |
3674 | (int) ELF64_R_SYM (rel->r_info) & 0xffffffff, | |
3675 | (int) rel->r_addend & 0xffffffff); | |
721956f4 | 3676 | } |
bcaa2f82 | 3677 | if (len > 2 && stub_name[len - 2] == '+' && stub_name[len - 1] == '0') |
ee75fd95 | 3678 | stub_name[len - 2] = 0; |
721956f4 AM |
3679 | return stub_name; |
3680 | } | |
3681 | ||
e10a07b3 AM |
3682 | /* If mixing power10 with non-power10 code and --power10-stubs is not |
3683 | specified (or is auto) then calls using @notoc relocations that | |
3684 | need a stub will utilize power10 instructions in the stub, and | |
3685 | calls without @notoc relocations will not use power10 instructions. | |
3686 | The two classes of stubs are stored in separate stub_hash_table | |
3687 | entries having the same key string. The two entries will always be | |
3688 | adjacent on entry->root.next chain, even if hash table resizing | |
3689 | occurs. This function selects the correct entry to use. */ | |
3690 | ||
3691 | static struct ppc_stub_hash_entry * | |
3692 | select_alt_stub (struct ppc_stub_hash_entry *entry, bfd_boolean notoc) | |
3693 | { | |
3694 | bfd_boolean have_notoc; | |
3695 | ||
3696 | have_notoc = (entry->stub_type == ppc_stub_plt_call_notoc | |
3697 | || entry->stub_type == ppc_stub_plt_branch_notoc | |
3698 | || entry->stub_type == ppc_stub_long_branch_notoc); | |
3699 | ||
3700 | if (have_notoc != notoc) | |
3701 | { | |
3702 | const char *stub_name = entry->root.string; | |
3703 | ||
3704 | entry = (struct ppc_stub_hash_entry *) entry->root.next; | |
3705 | if (entry != NULL | |
3706 | && entry->root.string != stub_name) | |
3707 | entry = NULL; | |
3708 | } | |
3709 | ||
3710 | return entry; | |
3711 | } | |
3712 | ||
721956f4 AM |
3713 | /* Look up an entry in the stub hash. Stub entries are cached because |
3714 | creating the stub name takes a bit of time. */ | |
3715 | ||
3716 | static struct ppc_stub_hash_entry * | |
4ce794b7 AM |
3717 | ppc_get_stub_entry (const asection *input_section, |
3718 | const asection *sym_sec, | |
039b3fef | 3719 | struct ppc_link_hash_entry *h, |
4ce794b7 AM |
3720 | const Elf_Internal_Rela *rel, |
3721 | struct ppc_link_hash_table *htab) | |
721956f4 AM |
3722 | { |
3723 | struct ppc_stub_hash_entry *stub_entry; | |
6f20ed8a | 3724 | struct map_stub *group; |
721956f4 AM |
3725 | |
3726 | /* If this input section is part of a group of sections sharing one | |
3727 | stub section, then use the id of the first section in the group. | |
3728 | Stub names need to include a section id, as there may well be | |
3729 | more than one stub used to reach say, printf, and we need to | |
3730 | distinguish between them. */ | |
6f20ed8a | 3731 | group = htab->sec_info[input_section->id].u.group; |
89d77b8a AM |
3732 | if (group == NULL) |
3733 | return NULL; | |
721956f4 | 3734 | |
b3fac117 AM |
3735 | if (h != NULL && h->u.stub_cache != NULL |
3736 | && h->u.stub_cache->h == h | |
6f20ed8a | 3737 | && h->u.stub_cache->group == group) |
721956f4 | 3738 | { |
b3fac117 | 3739 | stub_entry = h->u.stub_cache; |
721956f4 AM |
3740 | } |
3741 | else | |
3742 | { | |
3743 | char *stub_name; | |
3744 | ||
6f20ed8a | 3745 | stub_name = ppc_stub_name (group->link_sec, sym_sec, h, rel); |
721956f4 AM |
3746 | if (stub_name == NULL) |
3747 | return NULL; | |
3748 | ||
3749 | stub_entry = ppc_stub_hash_lookup (&htab->stub_hash_table, | |
b34976b6 | 3750 | stub_name, FALSE, FALSE); |
721956f4 | 3751 | if (h != NULL) |
b3fac117 | 3752 | h->u.stub_cache = stub_entry; |
721956f4 AM |
3753 | |
3754 | free (stub_name); | |
3755 | } | |
3756 | ||
e10a07b3 AM |
3757 | if (stub_entry != NULL && htab->params->power10_stubs == -1) |
3758 | { | |
3759 | bfd_boolean notoc = ELF64_R_TYPE (rel->r_info) == R_PPC64_REL24_NOTOC; | |
3760 | ||
3761 | stub_entry = select_alt_stub (stub_entry, notoc); | |
3762 | } | |
3763 | ||
721956f4 AM |
3764 | return stub_entry; |
3765 | } | |
3766 | ||
3767 | /* Add a new stub entry to the stub hash. Not all fields of the new | |
3768 | stub entry are initialised. */ | |
3769 | ||
3770 | static struct ppc_stub_hash_entry * | |
4ce794b7 AM |
3771 | ppc_add_stub (const char *stub_name, |
3772 | asection *section, | |
25f53a85 | 3773 | struct bfd_link_info *info) |
721956f4 | 3774 | { |
25f53a85 | 3775 | struct ppc_link_hash_table *htab = ppc_hash_table (info); |
6f20ed8a | 3776 | struct map_stub *group; |
721956f4 AM |
3777 | asection *link_sec; |
3778 | asection *stub_sec; | |
3779 | struct ppc_stub_hash_entry *stub_entry; | |
3780 | ||
6f20ed8a AM |
3781 | group = htab->sec_info[section->id].u.group; |
3782 | link_sec = group->link_sec; | |
3783 | stub_sec = group->stub_sec; | |
721956f4 AM |
3784 | if (stub_sec == NULL) |
3785 | { | |
6f20ed8a AM |
3786 | size_t namelen; |
3787 | bfd_size_type len; | |
3788 | char *s_name; | |
721956f4 | 3789 | |
6f20ed8a AM |
3790 | namelen = strlen (link_sec->name); |
3791 | len = namelen + sizeof (STUB_SUFFIX); | |
3792 | s_name = bfd_alloc (htab->params->stub_bfd, len); | |
3793 | if (s_name == NULL) | |
3794 | return NULL; | |
721956f4 | 3795 | |
6f20ed8a AM |
3796 | memcpy (s_name, link_sec->name, namelen); |
3797 | memcpy (s_name + namelen, STUB_SUFFIX, sizeof (STUB_SUFFIX)); | |
3798 | stub_sec = (*htab->params->add_stub_section) (s_name, link_sec); | |
3799 | if (stub_sec == NULL) | |
3800 | return NULL; | |
3801 | group->stub_sec = stub_sec; | |
721956f4 AM |
3802 | } |
3803 | ||
3804 | /* Enter this entry into the linker stub hash table. */ | |
3805 | stub_entry = ppc_stub_hash_lookup (&htab->stub_hash_table, stub_name, | |
b34976b6 | 3806 | TRUE, FALSE); |
721956f4 AM |
3807 | if (stub_entry == NULL) |
3808 | { | |
695344c0 | 3809 | /* xgettext:c-format */ |
cf97bcb0 AM |
3810 | _bfd_error_handler (_("%pB: cannot create stub entry %s"), |
3811 | section->owner, stub_name); | |
721956f4 AM |
3812 | return NULL; |
3813 | } | |
3814 | ||
6f20ed8a | 3815 | stub_entry->group = group; |
721956f4 | 3816 | stub_entry->stub_offset = 0; |
721956f4 AM |
3817 | return stub_entry; |
3818 | } | |
3819 | ||
e717da7e AM |
3820 | /* Create .got and .rela.got sections in ABFD, and .got in dynobj if |
3821 | not already done. */ | |
65f38f15 | 3822 | |
b34976b6 | 3823 | static bfd_boolean |
e717da7e | 3824 | create_got_section (bfd *abfd, struct bfd_link_info *info) |
65f38f15 | 3825 | { |
e717da7e AM |
3826 | asection *got, *relgot; |
3827 | flagword flags; | |
3828 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
65f38f15 | 3829 | |
0c8d6e5c | 3830 | if (!is_ppc64_elf (abfd)) |
0ffa91dd | 3831 | return FALSE; |
4dfe6ac6 NC |
3832 | if (htab == NULL) |
3833 | return FALSE; | |
0ffa91dd | 3834 | |
33e44f2e AM |
3835 | if (!htab->elf.sgot |
3836 | && !_bfd_elf_create_got_section (htab->elf.dynobj, info)) | |
3837 | return FALSE; | |
e717da7e AM |
3838 | |
3839 | flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY | |
3840 | | SEC_LINKER_CREATED); | |
3841 | ||
c456f082 | 3842 | got = bfd_make_section_anyway_with_flags (abfd, ".got", flags); |
e717da7e | 3843 | if (!got |
fd361982 | 3844 | || !bfd_set_section_alignment (got, 3)) |
e717da7e | 3845 | return FALSE; |
65f38f15 | 3846 | |
c456f082 AM |
3847 | relgot = bfd_make_section_anyway_with_flags (abfd, ".rela.got", |
3848 | flags | SEC_READONLY); | |
e717da7e | 3849 | if (!relgot |
fd361982 | 3850 | || !bfd_set_section_alignment (relgot, 3)) |
b34976b6 | 3851 | return FALSE; |
e717da7e AM |
3852 | |
3853 | ppc64_elf_tdata (abfd)->got = got; | |
3854 | ppc64_elf_tdata (abfd)->relgot = relgot; | |
b34976b6 | 3855 | return TRUE; |
65f38f15 | 3856 | } |
5bd4f169 | 3857 | |
b31867b6 AM |
3858 | /* Follow indirect and warning symbol links. */ |
3859 | ||
3860 | static inline struct bfd_link_hash_entry * | |
3861 | follow_link (struct bfd_link_hash_entry *h) | |
3862 | { | |
3863 | while (h->type == bfd_link_hash_indirect | |
3864 | || h->type == bfd_link_hash_warning) | |
3865 | h = h->u.i.link; | |
3866 | return h; | |
3867 | } | |
3868 | ||
3869 | static inline struct elf_link_hash_entry * | |
3870 | elf_follow_link (struct elf_link_hash_entry *h) | |
3871 | { | |
3872 | return (struct elf_link_hash_entry *) follow_link (&h->root); | |
3873 | } | |
3874 | ||
3875 | static inline struct ppc_link_hash_entry * | |
3876 | ppc_follow_link (struct ppc_link_hash_entry *h) | |
3877 | { | |
ed7007c1 | 3878 | return ppc_elf_hash_entry (elf_follow_link (&h->elf)); |
b31867b6 AM |
3879 | } |
3880 | ||
40d16e0b AM |
3881 | /* Merge PLT info on FROM with that on TO. */ |
3882 | ||
3883 | static void | |
3884 | move_plt_plist (struct ppc_link_hash_entry *from, | |
3885 | struct ppc_link_hash_entry *to) | |
3886 | { | |
3887 | if (from->elf.plt.plist != NULL) | |
3888 | { | |
3889 | if (to->elf.plt.plist != NULL) | |
3890 | { | |
3891 | struct plt_entry **entp; | |
3892 | struct plt_entry *ent; | |
3893 | ||
3894 | for (entp = &from->elf.plt.plist; (ent = *entp) != NULL; ) | |
3895 | { | |
3896 | struct plt_entry *dent; | |
3897 | ||
3898 | for (dent = to->elf.plt.plist; dent != NULL; dent = dent->next) | |
3899 | if (dent->addend == ent->addend) | |
3900 | { | |
3901 | dent->plt.refcount += ent->plt.refcount; | |
3902 | *entp = ent->next; | |
3903 | break; | |
3904 | } | |
3905 | if (dent == NULL) | |
3906 | entp = &ent->next; | |
3907 | } | |
3908 | *entp = to->elf.plt.plist; | |
3909 | } | |
3910 | ||
3911 | to->elf.plt.plist = from->elf.plt.plist; | |
3912 | from->elf.plt.plist = NULL; | |
3913 | } | |
3914 | } | |
3915 | ||
65f38f15 AM |
3916 | /* Copy the extra info we tack onto an elf_link_hash_entry. */ |
3917 | ||
3918 | static void | |
fcfa13d2 AM |
3919 | ppc64_elf_copy_indirect_symbol (struct bfd_link_info *info, |
3920 | struct elf_link_hash_entry *dir, | |
3921 | struct elf_link_hash_entry *ind) | |
65f38f15 AM |
3922 | { |
3923 | struct ppc_link_hash_entry *edir, *eind; | |
3924 | ||
ed7007c1 AM |
3925 | edir = ppc_elf_hash_entry (dir); |
3926 | eind = ppc_elf_hash_entry (ind); | |
65f38f15 | 3927 | |
c79d6685 AM |
3928 | edir->is_func |= eind->is_func; |
3929 | edir->is_func_descriptor |= eind->is_func_descriptor; | |
3930 | edir->tls_mask |= eind->tls_mask; | |
3931 | if (eind->oh != NULL) | |
3932 | edir->oh = ppc_follow_link (eind->oh); | |
3933 | ||
474436e6 | 3934 | if (edir->elf.versioned != versioned_hidden) |
e81830c5 AM |
3935 | edir->elf.ref_dynamic |= eind->elf.ref_dynamic; |
3936 | edir->elf.ref_regular |= eind->elf.ref_regular; | |
3937 | edir->elf.ref_regular_nonweak |= eind->elf.ref_regular_nonweak; | |
4a7e5234 | 3938 | edir->elf.non_got_ref |= eind->elf.non_got_ref; |
e81830c5 AM |
3939 | edir->elf.needs_plt |= eind->elf.needs_plt; |
3940 | edir->elf.pointer_equality_needed |= eind->elf.pointer_equality_needed; | |
c79d6685 | 3941 | |
d311bc8b AM |
3942 | /* If we were called to copy over info for a weak sym, don't copy |
3943 | dyn_relocs, plt/got info, or dynindx. We used to copy dyn_relocs | |
3944 | in order to simplify readonly_dynrelocs and save a field in the | |
3945 | symbol hash entry, but that means dyn_relocs can't be used in any | |
3946 | tests about a specific symbol, or affect other symbol flags which | |
ab2477e1 | 3947 | are then tested. */ |
d311bc8b | 3948 | if (eind->elf.root.type != bfd_link_hash_indirect) |
ab2477e1 | 3949 | return; |
d311bc8b | 3950 | |
411e1bfb | 3951 | /* Copy over any dynamic relocs we may have on the indirect sym. */ |
190eb1dd | 3952 | if (ind->dyn_relocs != NULL) |
65f38f15 | 3953 | { |
190eb1dd | 3954 | if (dir->dyn_relocs != NULL) |
bbd7ec4a | 3955 | { |
6061a67d AM |
3956 | struct elf_dyn_relocs **pp; |
3957 | struct elf_dyn_relocs *p; | |
bbd7ec4a | 3958 | |
fcfa13d2 | 3959 | /* Add reloc counts against the indirect sym to the direct sym |
bbd7ec4a | 3960 | list. Merge any entries against the same section. */ |
190eb1dd | 3961 | for (pp = &ind->dyn_relocs; (p = *pp) != NULL; ) |
bbd7ec4a | 3962 | { |
6061a67d | 3963 | struct elf_dyn_relocs *q; |
bbd7ec4a | 3964 | |
190eb1dd | 3965 | for (q = dir->dyn_relocs; q != NULL; q = q->next) |
bbd7ec4a AM |
3966 | if (q->sec == p->sec) |
3967 | { | |
3968 | q->pc_count += p->pc_count; | |
3969 | q->count += p->count; | |
3970 | *pp = p->next; | |
3971 | break; | |
3972 | } | |
3973 | if (q == NULL) | |
3974 | pp = &p->next; | |
3975 | } | |
190eb1dd | 3976 | *pp = dir->dyn_relocs; |
bbd7ec4a AM |
3977 | } |
3978 | ||
190eb1dd L |
3979 | dir->dyn_relocs = ind->dyn_relocs; |
3980 | ind->dyn_relocs = NULL; | |
65f38f15 | 3981 | } |
65f38f15 | 3982 | |
81848ca0 AM |
3983 | /* Copy over got entries that we may have already seen to the |
3984 | symbol which just became indirect. */ | |
411e1bfb AM |
3985 | if (eind->elf.got.glist != NULL) |
3986 | { | |
3987 | if (edir->elf.got.glist != NULL) | |
3988 | { | |
3989 | struct got_entry **entp; | |
3990 | struct got_entry *ent; | |
3991 | ||
3992 | for (entp = &eind->elf.got.glist; (ent = *entp) != NULL; ) | |
3993 | { | |
3994 | struct got_entry *dent; | |
3995 | ||
3996 | for (dent = edir->elf.got.glist; dent != NULL; dent = dent->next) | |
3997 | if (dent->addend == ent->addend | |
e717da7e | 3998 | && dent->owner == ent->owner |
411e1bfb AM |
3999 | && dent->tls_type == ent->tls_type) |
4000 | { | |
4001 | dent->got.refcount += ent->got.refcount; | |
4002 | *entp = ent->next; | |
4003 | break; | |
4004 | } | |
4005 | if (dent == NULL) | |
4006 | entp = &ent->next; | |
4007 | } | |
4008 | *entp = edir->elf.got.glist; | |
4009 | } | |
4010 | ||
4011 | edir->elf.got.glist = eind->elf.got.glist; | |
4012 | eind->elf.got.glist = NULL; | |
4013 | } | |
4014 | ||
4015 | /* And plt entries. */ | |
40d16e0b | 4016 | move_plt_plist (eind, edir); |
411e1bfb | 4017 | |
fcfa13d2 | 4018 | if (eind->elf.dynindx != -1) |
411e1bfb | 4019 | { |
fcfa13d2 AM |
4020 | if (edir->elf.dynindx != -1) |
4021 | _bfd_elf_strtab_delref (elf_hash_table (info)->dynstr, | |
4022 | edir->elf.dynstr_index); | |
411e1bfb AM |
4023 | edir->elf.dynindx = eind->elf.dynindx; |
4024 | edir->elf.dynstr_index = eind->elf.dynstr_index; | |
4025 | eind->elf.dynindx = -1; | |
4026 | eind->elf.dynstr_index = 0; | |
4027 | } | |
411e1bfb AM |
4028 | } |
4029 | ||
8387904d AM |
4030 | /* Find the function descriptor hash entry from the given function code |
4031 | hash entry FH. Link the entries via their OH fields. */ | |
4032 | ||
4033 | static struct ppc_link_hash_entry * | |
b31867b6 | 4034 | lookup_fdh (struct ppc_link_hash_entry *fh, struct ppc_link_hash_table *htab) |
8387904d AM |
4035 | { |
4036 | struct ppc_link_hash_entry *fdh = fh->oh; | |
4037 | ||
4038 | if (fdh == NULL) | |
4039 | { | |
4040 | const char *fd_name = fh->elf.root.root.string + 1; | |
4041 | ||
ed7007c1 AM |
4042 | fdh = ppc_elf_hash_entry (elf_link_hash_lookup (&htab->elf, fd_name, |
4043 | FALSE, FALSE, FALSE)); | |
b31867b6 AM |
4044 | if (fdh == NULL) |
4045 | return fdh; | |
4046 | ||
4047 | fdh->is_func_descriptor = 1; | |
4048 | fdh->oh = fh; | |
4049 | fh->is_func = 1; | |
4050 | fh->oh = fdh; | |
8387904d AM |
4051 | } |
4052 | ||
8c5b4e52 AM |
4053 | fdh = ppc_follow_link (fdh); |
4054 | fdh->is_func_descriptor = 1; | |
4055 | fdh->oh = fh; | |
4056 | return fdh; | |
8387904d AM |
4057 | } |
4058 | ||
8c5b4e52 | 4059 | /* Make a fake function descriptor sym for the undefined code sym FH. */ |
bb700d78 AM |
4060 | |
4061 | static struct ppc_link_hash_entry * | |
4062 | make_fdh (struct bfd_link_info *info, | |
908b32fc | 4063 | struct ppc_link_hash_entry *fh) |
bb700d78 | 4064 | { |
8c5b4e52 AM |
4065 | bfd *abfd = fh->elf.root.u.undef.abfd; |
4066 | struct bfd_link_hash_entry *bh = NULL; | |
bb700d78 | 4067 | struct ppc_link_hash_entry *fdh; |
8c5b4e52 AM |
4068 | flagword flags = (fh->elf.root.type == bfd_link_hash_undefweak |
4069 | ? BSF_WEAK | |
4070 | : BSF_GLOBAL); | |
4071 | ||
4072 | if (!_bfd_generic_link_add_one_symbol (info, abfd, | |
4073 | fh->elf.root.root.string + 1, | |
4074 | flags, bfd_und_section_ptr, 0, | |
4075 | NULL, FALSE, FALSE, &bh)) | |
bb700d78 AM |
4076 | return NULL; |
4077 | ||
4078 | fdh = (struct ppc_link_hash_entry *) bh; | |
4079 | fdh->elf.non_elf = 0; | |
908b32fc AM |
4080 | fdh->fake = 1; |
4081 | fdh->is_func_descriptor = 1; | |
4082 | fdh->oh = fh; | |
4083 | fh->is_func = 1; | |
4084 | fh->oh = fdh; | |
bb700d78 AM |
4085 | return fdh; |
4086 | } | |
4087 | ||
8387904d AM |
4088 | /* Fix function descriptor symbols defined in .opd sections to be |
4089 | function type. */ | |
555cd476 AM |
4090 | |
4091 | static bfd_boolean | |
c16153ae | 4092 | ppc64_elf_add_symbol_hook (bfd *ibfd, |
e054468f | 4093 | struct bfd_link_info *info, |
555cd476 | 4094 | Elf_Internal_Sym *isym, |
6911b7dc | 4095 | const char **name, |
555cd476 AM |
4096 | flagword *flags ATTRIBUTE_UNUSED, |
4097 | asection **sec, | |
b53dfeb2 | 4098 | bfd_vma *value) |
555cd476 | 4099 | { |
b53dfeb2 | 4100 | if (*sec != NULL |
f1885d1e | 4101 | && strcmp ((*sec)->name, ".opd") == 0) |
b53dfeb2 AM |
4102 | { |
4103 | asection *code_sec; | |
4104 | ||
4105 | if (!(ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC | |
4106 | || ELF_ST_TYPE (isym->st_info) == STT_FUNC)) | |
4107 | isym->st_info = ELF_ST_INFO (ELF_ST_BIND (isym->st_info), STT_FUNC); | |
4108 | ||
4109 | /* If the symbol is a function defined in .opd, and the function | |
4110 | code is in a discarded group, let it appear to be undefined. */ | |
0e1862bb | 4111 | if (!bfd_link_relocatable (info) |
b53dfeb2 AM |
4112 | && (*sec)->reloc_count != 0 |
4113 | && opd_entry_value (*sec, *value, &code_sec, NULL, | |
4114 | FALSE) != (bfd_vma) -1 | |
4115 | && discarded_section (code_sec)) | |
4116 | { | |
4117 | *sec = bfd_und_section_ptr; | |
4118 | isym->st_shndx = SHN_UNDEF; | |
4119 | } | |
4120 | } | |
dbd1e97e AM |
4121 | else if (*sec != NULL |
4122 | && strcmp ((*sec)->name, ".toc") == 0 | |
4123 | && ELF_ST_TYPE (isym->st_info) == STT_OBJECT) | |
4124 | { | |
4125 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
4126 | if (htab != NULL) | |
4127 | htab->params->object_in_toc = 1; | |
4128 | } | |
433817dd | 4129 | |
6911b7dc AM |
4130 | if ((STO_PPC64_LOCAL_MASK & isym->st_other) != 0) |
4131 | { | |
4132 | if (abiversion (ibfd) == 0) | |
4133 | set_abiversion (ibfd, 2); | |
4134 | else if (abiversion (ibfd) == 1) | |
4135 | { | |
cf97bcb0 AM |
4136 | _bfd_error_handler (_("symbol '%s' has invalid st_other" |
4137 | " for ABI version 1"), *name); | |
6911b7dc AM |
4138 | bfd_set_error (bfd_error_bad_value); |
4139 | return FALSE; | |
4140 | } | |
4141 | } | |
4142 | ||
555cd476 AM |
4143 | return TRUE; |
4144 | } | |
4145 | ||
6911b7dc AM |
4146 | /* Merge non-visibility st_other attributes: local entry point. */ |
4147 | ||
4148 | static void | |
4149 | ppc64_elf_merge_symbol_attribute (struct elf_link_hash_entry *h, | |
4150 | const Elf_Internal_Sym *isym, | |
4151 | bfd_boolean definition, | |
4152 | bfd_boolean dynamic) | |
4153 | { | |
f378ab09 | 4154 | if (definition && (!dynamic || !h->def_regular)) |
6911b7dc AM |
4155 | h->other = ((isym->st_other & ~ELF_ST_VISIBILITY (-1)) |
4156 | | ELF_ST_VISIBILITY (h->other)); | |
4157 | } | |
4158 | ||
8c5b4e52 AM |
4159 | /* Hook called on merging a symbol. We use this to clear "fake" since |
4160 | we now have a real symbol. */ | |
4161 | ||
4162 | static bfd_boolean | |
4163 | ppc64_elf_merge_symbol (struct elf_link_hash_entry *h, | |
8b5f1ed8 | 4164 | const Elf_Internal_Sym *isym, |
8c5b4e52 AM |
4165 | asection **psec ATTRIBUTE_UNUSED, |
4166 | bfd_boolean newdef ATTRIBUTE_UNUSED, | |
4167 | bfd_boolean olddef ATTRIBUTE_UNUSED, | |
4168 | bfd *oldbfd ATTRIBUTE_UNUSED, | |
4169 | const asection *oldsec ATTRIBUTE_UNUSED) | |
4170 | { | |
ed7007c1 | 4171 | ppc_elf_hash_entry (h)->fake = 0; |
8b5f1ed8 | 4172 | if ((STO_PPC64_LOCAL_MASK & isym->st_other) != 0) |
ed7007c1 | 4173 | ppc_elf_hash_entry (h)->non_zero_localentry = 1; |
8c5b4e52 AM |
4174 | return TRUE; |
4175 | } | |
4176 | ||
8387904d | 4177 | /* This function makes an old ABI object reference to ".bar" cause the |
908b32fc AM |
4178 | inclusion of a new ABI object archive that defines "bar". |
4179 | NAME is a symbol defined in an archive. Return a symbol in the hash | |
4180 | table that might be satisfied by the archive symbols. */ | |
8387904d AM |
4181 | |
4182 | static struct elf_link_hash_entry * | |
4183 | ppc64_elf_archive_symbol_lookup (bfd *abfd, | |
4184 | struct bfd_link_info *info, | |
4185 | const char *name) | |
4186 | { | |
4187 | struct elf_link_hash_entry *h; | |
4188 | char *dot_name; | |
4189 | size_t len; | |
4190 | ||
4191 | h = _bfd_elf_archive_symbol_lookup (abfd, info, name); | |
908b32fc AM |
4192 | if (h != NULL |
4193 | /* Don't return this sym if it is a fake function descriptor | |
4194 | created by add_symbol_adjust. */ | |
ed7007c1 | 4195 | && !ppc_elf_hash_entry (h)->fake) |
8387904d AM |
4196 | return h; |
4197 | ||
4198 | if (name[0] == '.') | |
4199 | return h; | |
4200 | ||
4201 | len = strlen (name); | |
4202 | dot_name = bfd_alloc (abfd, len + 2); | |
4203 | if (dot_name == NULL) | |
e99955cd | 4204 | return (struct elf_link_hash_entry *) -1; |
8387904d AM |
4205 | dot_name[0] = '.'; |
4206 | memcpy (dot_name + 1, name, len + 1); | |
4207 | h = _bfd_elf_archive_symbol_lookup (abfd, info, dot_name); | |
4208 | bfd_release (abfd, dot_name); | |
a804e476 AM |
4209 | if (h != NULL) |
4210 | return h; | |
4211 | ||
4212 | if (strcmp (name, "__tls_get_addr_opt") == 0) | |
4213 | h = _bfd_elf_archive_symbol_lookup (abfd, info, "__tls_get_addr_desc"); | |
8387904d AM |
4214 | return h; |
4215 | } | |
4216 | ||
4217 | /* This function satisfies all old ABI object references to ".bar" if a | |
99877b66 AM |
4218 | new ABI object defines "bar". Well, at least, undefined dot symbols |
4219 | are made weak. This stops later archive searches from including an | |
4220 | object if we already have a function descriptor definition. It also | |
35b0ce59 AM |
4221 | prevents the linker complaining about undefined symbols. |
4222 | We also check and correct mismatched symbol visibility here. The | |
4223 | most restrictive visibility of the function descriptor and the | |
4224 | function entry symbol is used. */ | |
8387904d AM |
4225 | |
4226 | static bfd_boolean | |
b3fac117 | 4227 | add_symbol_adjust (struct ppc_link_hash_entry *eh, struct bfd_link_info *info) |
8387904d | 4228 | { |
8387904d AM |
4229 | struct ppc_link_hash_table *htab; |
4230 | struct ppc_link_hash_entry *fdh; | |
4231 | ||
b3fac117 AM |
4232 | if (eh->elf.root.type == bfd_link_hash_warning) |
4233 | eh = (struct ppc_link_hash_entry *) eh->elf.root.u.i.link; | |
8387904d | 4234 | |
8400d40d AM |
4235 | if (eh->elf.root.type == bfd_link_hash_indirect) |
4236 | return TRUE; | |
4237 | ||
b3fac117 AM |
4238 | if (eh->elf.root.root.string[0] != '.') |
4239 | abort (); | |
8387904d | 4240 | |
b3fac117 | 4241 | htab = ppc_hash_table (info); |
4dfe6ac6 NC |
4242 | if (htab == NULL) |
4243 | return FALSE; | |
4244 | ||
b31867b6 | 4245 | fdh = lookup_fdh (eh, htab); |
8c5b4e52 AM |
4246 | if (fdh == NULL |
4247 | && !bfd_link_relocatable (info) | |
4248 | && (eh->elf.root.type == bfd_link_hash_undefined | |
4249 | || eh->elf.root.type == bfd_link_hash_undefweak) | |
4250 | && eh->elf.ref_regular) | |
4251 | { | |
4252 | /* Make an undefined function descriptor sym, in order to | |
4253 | pull in an --as-needed shared lib. Archives are handled | |
4254 | elsewhere. */ | |
4255 | fdh = make_fdh (info, eh); | |
4256 | if (fdh == NULL) | |
4257 | return FALSE; | |
bb700d78 | 4258 | } |
8c5b4e52 AM |
4259 | |
4260 | if (fdh != NULL) | |
8387904d | 4261 | { |
35b0ce59 AM |
4262 | unsigned entry_vis = ELF_ST_VISIBILITY (eh->elf.other) - 1; |
4263 | unsigned descr_vis = ELF_ST_VISIBILITY (fdh->elf.other) - 1; | |
8c5b4e52 AM |
4264 | |
4265 | /* Make both descriptor and entry symbol have the most | |
4266 | constraining visibility of either symbol. */ | |
35b0ce59 AM |
4267 | if (entry_vis < descr_vis) |
4268 | fdh->elf.other += entry_vis - descr_vis; | |
4269 | else if (entry_vis > descr_vis) | |
4270 | eh->elf.other += descr_vis - entry_vis; | |
4271 | ||
8c5b4e52 AM |
4272 | /* Propagate reference flags from entry symbol to function |
4273 | descriptor symbol. */ | |
bc4e12de | 4274 | fdh->elf.root.non_ir_ref_regular |= eh->elf.root.non_ir_ref_regular; |
4070765b | 4275 | fdh->elf.root.non_ir_ref_dynamic |= eh->elf.root.non_ir_ref_dynamic; |
8c5b4e52 AM |
4276 | fdh->elf.ref_regular |= eh->elf.ref_regular; |
4277 | fdh->elf.ref_regular_nonweak |= eh->elf.ref_regular_nonweak; | |
4278 | ||
4279 | if (!fdh->elf.forced_local | |
4280 | && fdh->elf.dynindx == -1 | |
4281 | && fdh->elf.versioned != versioned_hidden | |
4282 | && (bfd_link_dll (info) | |
4283 | || fdh->elf.def_dynamic | |
4284 | || fdh->elf.ref_dynamic) | |
4285 | && (eh->elf.ref_regular | |
4286 | || eh->elf.def_regular)) | |
4287 | { | |
2cdcc330 | 4288 | if (!bfd_elf_link_record_dynamic_symbol (info, &fdh->elf)) |
8c5b4e52 | 4289 | return FALSE; |
35b0ce59 | 4290 | } |
8387904d | 4291 | } |
99877b66 | 4292 | |
8387904d AM |
4293 | return TRUE; |
4294 | } | |
4295 | ||
f6c7c3e8 AM |
4296 | /* Set up opd section info and abiversion for IBFD, and process list |
4297 | of dot-symbols we made in link_hash_newfunc. */ | |
b3fac117 | 4298 | |
8387904d | 4299 | static bfd_boolean |
f6c7c3e8 | 4300 | ppc64_elf_before_check_relocs (bfd *ibfd, struct bfd_link_info *info) |
8387904d | 4301 | { |
99877b66 | 4302 | struct ppc_link_hash_table *htab; |
b3fac117 | 4303 | struct ppc_link_hash_entry **p, *eh; |
459609d6 | 4304 | asection *opd = bfd_get_section_by_name (ibfd, ".opd"); |
433817dd | 4305 | |
459609d6 | 4306 | if (opd != NULL && opd->size != 0) |
b3fac117 | 4307 | { |
b9399fcf AM |
4308 | BFD_ASSERT (ppc64_elf_section_data (opd)->sec_type == sec_normal); |
4309 | ppc64_elf_section_data (opd)->sec_type = sec_opd; | |
4310 | ||
459609d6 AM |
4311 | if (abiversion (ibfd) == 0) |
4312 | set_abiversion (ibfd, 1); | |
8a2058b5 | 4313 | else if (abiversion (ibfd) >= 2) |
f6c7c3e8 | 4314 | { |
695344c0 | 4315 | /* xgettext:c-format */ |
cf97bcb0 AM |
4316 | _bfd_error_handler (_("%pB .opd not allowed in ABI version %d"), |
4317 | ibfd, abiversion (ibfd)); | |
459609d6 AM |
4318 | bfd_set_error (bfd_error_bad_value); |
4319 | return FALSE; | |
f6c7c3e8 | 4320 | } |
b9399fcf | 4321 | } |
f6c7c3e8 | 4322 | |
b9399fcf AM |
4323 | if (is_ppc64_elf (info->output_bfd)) |
4324 | { | |
4325 | /* For input files without an explicit abiversion in e_flags | |
4326 | we should have flagged any with symbol st_other bits set | |
4327 | as ELFv1 and above flagged those with .opd as ELFv2. | |
4328 | Set the output abiversion if not yet set, and for any input | |
4329 | still ambiguous, take its abiversion from the output. | |
4330 | Differences in ABI are reported later. */ | |
4331 | if (abiversion (info->output_bfd) == 0) | |
4332 | set_abiversion (info->output_bfd, abiversion (ibfd)); | |
4333 | else if (abiversion (ibfd) == 0) | |
4334 | set_abiversion (ibfd, abiversion (info->output_bfd)); | |
b3fac117 AM |
4335 | } |
4336 | ||
459609d6 AM |
4337 | htab = ppc_hash_table (info); |
4338 | if (htab == NULL) | |
b9399fcf | 4339 | return TRUE; |
459609d6 | 4340 | |
b9399fcf AM |
4341 | if (opd != NULL && opd->size != 0 |
4342 | && (ibfd->flags & DYNAMIC) == 0 | |
4343 | && (opd->flags & SEC_RELOC) != 0 | |
4344 | && opd->reloc_count != 0 | |
4345 | && !bfd_is_abs_section (opd->output_section) | |
4346 | && info->gc_sections) | |
4347 | { | |
4348 | /* Garbage collection needs some extra help with .opd sections. | |
4349 | We don't want to necessarily keep everything referenced by | |
4350 | relocs in .opd, as that would keep all functions. Instead, | |
4351 | if we reference an .opd symbol (a function descriptor), we | |
4352 | want to keep the function code symbol's section. This is | |
4353 | easy for global symbols, but for local syms we need to keep | |
4354 | information about the associated function section. */ | |
4355 | bfd_size_type amt; | |
4356 | asection **opd_sym_map; | |
4357 | Elf_Internal_Shdr *symtab_hdr; | |
4358 | Elf_Internal_Rela *relocs, *rel_end, *rel; | |
4359 | ||
4360 | amt = OPD_NDX (opd->size) * sizeof (*opd_sym_map); | |
4361 | opd_sym_map = bfd_zalloc (ibfd, amt); | |
4362 | if (opd_sym_map == NULL) | |
4363 | return FALSE; | |
4364 | ppc64_elf_section_data (opd)->u.opd.func_sec = opd_sym_map; | |
4365 | relocs = _bfd_elf_link_read_relocs (ibfd, opd, NULL, NULL, | |
4366 | info->keep_memory); | |
4367 | if (relocs == NULL) | |
4368 | return FALSE; | |
4369 | symtab_hdr = &elf_symtab_hdr (ibfd); | |
4370 | rel_end = relocs + opd->reloc_count - 1; | |
4371 | for (rel = relocs; rel < rel_end; rel++) | |
4372 | { | |
4373 | enum elf_ppc64_reloc_type r_type = ELF64_R_TYPE (rel->r_info); | |
4374 | unsigned long r_symndx = ELF64_R_SYM (rel->r_info); | |
4375 | ||
4376 | if (r_type == R_PPC64_ADDR64 | |
4377 | && ELF64_R_TYPE ((rel + 1)->r_info) == R_PPC64_TOC | |
4378 | && r_symndx < symtab_hdr->sh_info) | |
4379 | { | |
4380 | Elf_Internal_Sym *isym; | |
4381 | asection *s; | |
4382 | ||
f1dfbfdb L |
4383 | isym = bfd_sym_from_r_symndx (&htab->elf.sym_cache, ibfd, |
4384 | r_symndx); | |
b9399fcf AM |
4385 | if (isym == NULL) |
4386 | { | |
4387 | if (elf_section_data (opd)->relocs != relocs) | |
4388 | free (relocs); | |
4389 | return FALSE; | |
4390 | } | |
4391 | ||
4392 | s = bfd_section_from_elf_index (ibfd, isym->st_shndx); | |
4393 | if (s != NULL && s != opd) | |
4394 | opd_sym_map[OPD_NDX (rel->r_offset)] = s; | |
4395 | } | |
4396 | } | |
4397 | if (elf_section_data (opd)->relocs != relocs) | |
4398 | free (relocs); | |
4399 | } | |
459609d6 AM |
4400 | |
4401 | p = &htab->dot_syms; | |
4402 | while ((eh = *p) != NULL) | |
4403 | { | |
4404 | *p = NULL; | |
4405 | if (&eh->elf == htab->elf.hgot) | |
4406 | ; | |
4407 | else if (htab->elf.hgot == NULL | |
4408 | && strcmp (eh->elf.root.root.string, ".TOC.") == 0) | |
4409 | htab->elf.hgot = &eh->elf; | |
8c5b4e52 AM |
4410 | else if (abiversion (ibfd) <= 1) |
4411 | { | |
4412 | htab->need_func_desc_adj = 1; | |
4413 | if (!add_symbol_adjust (eh, info)) | |
4414 | return FALSE; | |
4415 | } | |
459609d6 AM |
4416 | p = &eh->u.next_dot_sym; |
4417 | } | |
b3fac117 | 4418 | return TRUE; |
8387904d AM |
4419 | } |
4420 | ||
97fed1c9 JJ |
4421 | /* Undo hash table changes when an --as-needed input file is determined |
4422 | not to be needed. */ | |
4423 | ||
4424 | static bfd_boolean | |
e5034e59 AM |
4425 | ppc64_elf_notice_as_needed (bfd *ibfd, |
4426 | struct bfd_link_info *info, | |
4427 | enum notice_asneeded_action act) | |
97fed1c9 | 4428 | { |
e5034e59 AM |
4429 | if (act == notice_not_needed) |
4430 | { | |
4431 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
4dfe6ac6 | 4432 | |
e5034e59 AM |
4433 | if (htab == NULL) |
4434 | return FALSE; | |
4dfe6ac6 | 4435 | |
e5034e59 AM |
4436 | htab->dot_syms = NULL; |
4437 | } | |
4438 | return _bfd_elf_notice_as_needed (ibfd, info, act); | |
97fed1c9 JJ |
4439 | } |
4440 | ||
aa374f67 AM |
4441 | /* If --just-symbols against a final linked binary, then assume we need |
4442 | toc adjusting stubs when calling functions defined there. */ | |
4443 | ||
4444 | static void | |
4445 | ppc64_elf_link_just_syms (asection *sec, struct bfd_link_info *info) | |
4446 | { | |
4447 | if ((sec->flags & SEC_CODE) != 0 | |
4448 | && (sec->owner->flags & (EXEC_P | DYNAMIC)) != 0 | |
4449 | && is_ppc64_elf (sec->owner)) | |
4450 | { | |
2c3f079f AM |
4451 | if (abiversion (sec->owner) >= 2 |
4452 | || bfd_get_section_by_name (sec->owner, ".opd") != NULL) | |
aa374f67 AM |
4453 | sec->has_toc_reloc = 1; |
4454 | } | |
4455 | _bfd_elf_link_just_syms (sec, info); | |
4456 | } | |
4457 | ||
e054468f | 4458 | static struct plt_entry ** |
4ce794b7 AM |
4459 | update_local_sym_info (bfd *abfd, Elf_Internal_Shdr *symtab_hdr, |
4460 | unsigned long r_symndx, bfd_vma r_addend, int tls_type) | |
411e1bfb AM |
4461 | { |
4462 | struct got_entry **local_got_ents = elf_local_got_ents (abfd); | |
e054468f | 4463 | struct plt_entry **local_plt; |
f961d9dd | 4464 | unsigned char *local_got_tls_masks; |
411e1bfb AM |
4465 | |
4466 | if (local_got_ents == NULL) | |
4467 | { | |
4468 | bfd_size_type size = symtab_hdr->sh_info; | |
4469 | ||
e054468f AM |
4470 | size *= (sizeof (*local_got_ents) |
4471 | + sizeof (*local_plt) | |
4472 | + sizeof (*local_got_tls_masks)); | |
4ce794b7 | 4473 | local_got_ents = bfd_zalloc (abfd, size); |
411e1bfb | 4474 | if (local_got_ents == NULL) |
e054468f | 4475 | return NULL; |
411e1bfb AM |
4476 | elf_local_got_ents (abfd) = local_got_ents; |
4477 | } | |
4478 | ||
37da22e5 | 4479 | if ((tls_type & (NON_GOT | TLS_EXPLICIT)) == 0) |
411e1bfb AM |
4480 | { |
4481 | struct got_entry *ent; | |
4482 | ||
4483 | for (ent = local_got_ents[r_symndx]; ent != NULL; ent = ent->next) | |
e717da7e AM |
4484 | if (ent->addend == r_addend |
4485 | && ent->owner == abfd | |
4486 | && ent->tls_type == tls_type) | |
411e1bfb AM |
4487 | break; |
4488 | if (ent == NULL) | |
4489 | { | |
986f0783 | 4490 | size_t amt = sizeof (*ent); |
4ce794b7 | 4491 | ent = bfd_alloc (abfd, amt); |
411e1bfb AM |
4492 | if (ent == NULL) |
4493 | return FALSE; | |
4494 | ent->next = local_got_ents[r_symndx]; | |
4495 | ent->addend = r_addend; | |
e717da7e | 4496 | ent->owner = abfd; |
411e1bfb | 4497 | ent->tls_type = tls_type; |
927be08e | 4498 | ent->is_indirect = FALSE; |
411e1bfb AM |
4499 | ent->got.refcount = 0; |
4500 | local_got_ents[r_symndx] = ent; | |
4501 | } | |
4502 | ent->got.refcount += 1; | |
4503 | } | |
4504 | ||
e054468f | 4505 | local_plt = (struct plt_entry **) (local_got_ents + symtab_hdr->sh_info); |
f961d9dd | 4506 | local_got_tls_masks = (unsigned char *) (local_plt + symtab_hdr->sh_info); |
37da22e5 | 4507 | local_got_tls_masks[r_symndx] |= tls_type & 0xff; |
e054468f AM |
4508 | |
4509 | return local_plt + r_symndx; | |
65f38f15 AM |
4510 | } |
4511 | ||
411e1bfb | 4512 | static bfd_boolean |
e054468f | 4513 | update_plt_info (bfd *abfd, struct plt_entry **plist, bfd_vma addend) |
1e2f5b6e | 4514 | { |
411e1bfb | 4515 | struct plt_entry *ent; |
1e2f5b6e | 4516 | |
e054468f | 4517 | for (ent = *plist; ent != NULL; ent = ent->next) |
411e1bfb AM |
4518 | if (ent->addend == addend) |
4519 | break; | |
4520 | if (ent == NULL) | |
1e2f5b6e | 4521 | { |
986f0783 | 4522 | size_t amt = sizeof (*ent); |
4ce794b7 | 4523 | ent = bfd_alloc (abfd, amt); |
411e1bfb AM |
4524 | if (ent == NULL) |
4525 | return FALSE; | |
e054468f | 4526 | ent->next = *plist; |
411e1bfb AM |
4527 | ent->addend = addend; |
4528 | ent->plt.refcount = 0; | |
e054468f | 4529 | *plist = ent; |
1e2f5b6e | 4530 | } |
411e1bfb | 4531 | ent->plt.refcount += 1; |
b34976b6 | 4532 | return TRUE; |
1e2f5b6e AM |
4533 | } |
4534 | ||
e054468f AM |
4535 | static bfd_boolean |
4536 | is_branch_reloc (enum elf_ppc64_reloc_type r_type) | |
4537 | { | |
4538 | return (r_type == R_PPC64_REL24 | |
05d0e962 | 4539 | || r_type == R_PPC64_REL24_NOTOC |
e054468f AM |
4540 | || r_type == R_PPC64_REL14 |
4541 | || r_type == R_PPC64_REL14_BRTAKEN | |
4542 | || r_type == R_PPC64_REL14_BRNTAKEN | |
4543 | || r_type == R_PPC64_ADDR24 | |
4544 | || r_type == R_PPC64_ADDR14 | |
4545 | || r_type == R_PPC64_ADDR14_BRTAKEN | |
23cedd1d | 4546 | || r_type == R_PPC64_ADDR14_BRNTAKEN |
5663e321 AM |
4547 | || r_type == R_PPC64_PLTCALL |
4548 | || r_type == R_PPC64_PLTCALL_NOTOC); | |
23cedd1d AM |
4549 | } |
4550 | ||
4551 | /* Relocs on inline plt call sequence insns prior to the call. */ | |
4552 | ||
4553 | static bfd_boolean | |
4554 | is_plt_seq_reloc (enum elf_ppc64_reloc_type r_type) | |
4555 | { | |
4556 | return (r_type == R_PPC64_PLT16_HA | |
4557 | || r_type == R_PPC64_PLT16_HI | |
4558 | || r_type == R_PPC64_PLT16_LO | |
4559 | || r_type == R_PPC64_PLT16_LO_DS | |
5663e321 AM |
4560 | || r_type == R_PPC64_PLT_PCREL34 |
4561 | || r_type == R_PPC64_PLT_PCREL34_NOTOC | |
4562 | || r_type == R_PPC64_PLTSEQ | |
4563 | || r_type == R_PPC64_PLTSEQ_NOTOC); | |
e054468f AM |
4564 | } |
4565 | ||
5bd4f169 | 4566 | /* Look through the relocs for a section during the first phase, and |
65f38f15 | 4567 | calculate needed space in the global offset table, procedure |
5d1634d7 | 4568 | linkage table, and dynamic reloc sections. */ |
5bd4f169 | 4569 | |
b34976b6 | 4570 | static bfd_boolean |
4ce794b7 AM |
4571 | ppc64_elf_check_relocs (bfd *abfd, struct bfd_link_info *info, |
4572 | asection *sec, const Elf_Internal_Rela *relocs) | |
5bd4f169 | 4573 | { |
65f38f15 | 4574 | struct ppc_link_hash_table *htab; |
5bd4f169 | 4575 | Elf_Internal_Shdr *symtab_hdr; |
c7e2358a | 4576 | struct elf_link_hash_entry **sym_hashes; |
5bd4f169 AM |
4577 | const Elf_Internal_Rela *rel; |
4578 | const Elf_Internal_Rela *rel_end; | |
5bd4f169 | 4579 | asection *sreloc; |
3a71aa26 | 4580 | struct elf_link_hash_entry *tga, *dottga; |
b9399fcf | 4581 | bfd_boolean is_opd; |
5bd4f169 | 4582 | |
0e1862bb | 4583 | if (bfd_link_relocatable (info)) |
b34976b6 | 4584 | return TRUE; |
5bd4f169 | 4585 | |
0c8d6e5c | 4586 | BFD_ASSERT (is_ppc64_elf (abfd)); |
0ffa91dd | 4587 | |
65f38f15 | 4588 | htab = ppc_hash_table (info); |
4dfe6ac6 NC |
4589 | if (htab == NULL) |
4590 | return FALSE; | |
4591 | ||
3a71aa26 AM |
4592 | tga = elf_link_hash_lookup (&htab->elf, "__tls_get_addr", |
4593 | FALSE, FALSE, TRUE); | |
4594 | dottga = elf_link_hash_lookup (&htab->elf, ".__tls_get_addr", | |
4595 | FALSE, FALSE, TRUE); | |
0ffa91dd | 4596 | symtab_hdr = &elf_symtab_hdr (abfd); |
5bd4f169 | 4597 | sym_hashes = elf_sym_hashes (abfd); |
5bd4f169 | 4598 | sreloc = NULL; |
b9399fcf | 4599 | is_opd = ppc64_elf_section_data (sec)->sec_type == sec_opd; |
5bd4f169 AM |
4600 | rel_end = relocs + sec->reloc_count; |
4601 | for (rel = relocs; rel < rel_end; rel++) | |
4602 | { | |
4603 | unsigned long r_symndx; | |
4604 | struct elf_link_hash_entry *h; | |
04c9666a | 4605 | enum elf_ppc64_reloc_type r_type; |
727fc41e | 4606 | int tls_type; |
7c8fe5c4 | 4607 | struct _ppc64_elf_section_data *ppc64_sec; |
cbf95972 | 4608 | struct plt_entry **ifunc, **plt_list; |
5bd4f169 AM |
4609 | |
4610 | r_symndx = ELF64_R_SYM (rel->r_info); | |
4611 | if (r_symndx < symtab_hdr->sh_info) | |
4612 | h = NULL; | |
4613 | else | |
973a3492 L |
4614 | { |
4615 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; | |
b31867b6 | 4616 | h = elf_follow_link (h); |
1c865ab2 AM |
4617 | |
4618 | if (h == htab->elf.hgot) | |
4619 | sec->has_toc_reloc = 1; | |
973a3492 | 4620 | } |
5bd4f169 | 4621 | |
5663e321 AM |
4622 | r_type = ELF64_R_TYPE (rel->r_info); |
4623 | switch (r_type) | |
4624 | { | |
04bdff6a AM |
4625 | case R_PPC64_D34: |
4626 | case R_PPC64_D34_LO: | |
4627 | case R_PPC64_D34_HI30: | |
4628 | case R_PPC64_D34_HA30: | |
4629 | case R_PPC64_D28: | |
c213164a AM |
4630 | case R_PPC64_TPREL34: |
4631 | case R_PPC64_DTPREL34: | |
04bdff6a | 4632 | case R_PPC64_PCREL34: |
5663e321 | 4633 | case R_PPC64_GOT_PCREL34: |
87c69f97 AM |
4634 | case R_PPC64_GOT_TLSGD_PCREL34: |
4635 | case R_PPC64_GOT_TLSLD_PCREL34: | |
4636 | case R_PPC64_GOT_TPREL_PCREL34: | |
4637 | case R_PPC64_GOT_DTPREL_PCREL34: | |
5663e321 AM |
4638 | case R_PPC64_PLT_PCREL34: |
4639 | case R_PPC64_PLT_PCREL34_NOTOC: | |
04bdff6a | 4640 | case R_PPC64_PCREL28: |
e10a07b3 | 4641 | htab->has_power10_relocs = 1; |
133a1f60 AM |
4642 | break; |
4643 | default: | |
5663e321 AM |
4644 | break; |
4645 | } | |
903b777d AM |
4646 | |
4647 | switch (r_type) | |
4648 | { | |
4649 | case R_PPC64_PLT16_HA: | |
4650 | case R_PPC64_GOT_TLSLD16_HA: | |
4651 | case R_PPC64_GOT_TLSGD16_HA: | |
4652 | case R_PPC64_GOT_TPREL16_HA: | |
4653 | case R_PPC64_GOT_DTPREL16_HA: | |
4654 | case R_PPC64_GOT16_HA: | |
4655 | case R_PPC64_TOC16_HA: | |
4656 | case R_PPC64_PLT16_LO: | |
4657 | case R_PPC64_PLT16_LO_DS: | |
4658 | case R_PPC64_GOT_TLSLD16_LO: | |
4659 | case R_PPC64_GOT_TLSGD16_LO: | |
4660 | case R_PPC64_GOT_TPREL16_LO_DS: | |
4661 | case R_PPC64_GOT_DTPREL16_LO_DS: | |
4662 | case R_PPC64_GOT16_LO: | |
4663 | case R_PPC64_GOT16_LO_DS: | |
4664 | case R_PPC64_TOC16_LO: | |
4665 | case R_PPC64_TOC16_LO_DS: | |
4666 | case R_PPC64_GOT_PCREL34: | |
4667 | ppc64_elf_tdata (abfd)->has_optrel = 1; | |
4668 | ppc64_elf_section_data (sec)->has_optrel = 1; | |
4669 | break; | |
4670 | default: | |
4671 | break; | |
4672 | } | |
4673 | ||
f749f26e | 4674 | ifunc = NULL; |
25f23106 AM |
4675 | if (h != NULL) |
4676 | { | |
4677 | if (h->type == STT_GNU_IFUNC) | |
4678 | { | |
4679 | h->needs_plt = 1; | |
4680 | ifunc = &h->plt.plist; | |
4681 | } | |
4682 | } | |
4683 | else | |
4684 | { | |
f1dfbfdb | 4685 | Elf_Internal_Sym *isym = bfd_sym_from_r_symndx (&htab->elf.sym_cache, |
25f23106 AM |
4686 | abfd, r_symndx); |
4687 | if (isym == NULL) | |
4688 | return FALSE; | |
4689 | ||
4690 | if (ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC) | |
4691 | { | |
4692 | ifunc = update_local_sym_info (abfd, symtab_hdr, r_symndx, | |
133a1f60 | 4693 | rel->r_addend, |
37da22e5 | 4694 | NON_GOT | PLT_IFUNC); |
25f23106 AM |
4695 | if (ifunc == NULL) |
4696 | return FALSE; | |
4697 | } | |
4698 | } | |
727fc41e | 4699 | |
f749f26e | 4700 | tls_type = 0; |
a33d1f77 | 4701 | switch (r_type) |
5bd4f169 | 4702 | { |
727fc41e AM |
4703 | case R_PPC64_TLSGD: |
4704 | case R_PPC64_TLSLD: | |
4705 | /* These special tls relocs tie a call to __tls_get_addr with | |
4706 | its parameter symbol. */ | |
37da22e5 | 4707 | if (h != NULL) |
ed7007c1 | 4708 | ppc_elf_hash_entry (h)->tls_mask |= TLS_TLS | TLS_MARK; |
37da22e5 AM |
4709 | else |
4710 | if (!update_local_sym_info (abfd, symtab_hdr, r_symndx, | |
133a1f60 | 4711 | rel->r_addend, |
37da22e5 AM |
4712 | NON_GOT | TLS_TLS | TLS_MARK)) |
4713 | return FALSE; | |
4714 | sec->has_tls_reloc = 1; | |
727fc41e AM |
4715 | break; |
4716 | ||
411e1bfb AM |
4717 | case R_PPC64_GOT_TLSLD16: |
4718 | case R_PPC64_GOT_TLSLD16_LO: | |
4719 | case R_PPC64_GOT_TLSLD16_HI: | |
4720 | case R_PPC64_GOT_TLSLD16_HA: | |
87c69f97 | 4721 | case R_PPC64_GOT_TLSLD_PCREL34: |
951fd09b | 4722 | tls_type = TLS_TLS | TLS_LD; |
411e1bfb AM |
4723 | goto dogottls; |
4724 | ||
4725 | case R_PPC64_GOT_TLSGD16: | |
4726 | case R_PPC64_GOT_TLSGD16_LO: | |
4727 | case R_PPC64_GOT_TLSGD16_HI: | |
4728 | case R_PPC64_GOT_TLSGD16_HA: | |
87c69f97 | 4729 | case R_PPC64_GOT_TLSGD_PCREL34: |
951fd09b | 4730 | tls_type = TLS_TLS | TLS_GD; |
411e1bfb AM |
4731 | goto dogottls; |
4732 | ||
4733 | case R_PPC64_GOT_TPREL16_DS: | |
4734 | case R_PPC64_GOT_TPREL16_LO_DS: | |
4735 | case R_PPC64_GOT_TPREL16_HI: | |
4736 | case R_PPC64_GOT_TPREL16_HA: | |
87c69f97 | 4737 | case R_PPC64_GOT_TPREL_PCREL34: |
7c8bbca5 | 4738 | if (bfd_link_dll (info)) |
411e1bfb AM |
4739 | info->flags |= DF_STATIC_TLS; |
4740 | tls_type = TLS_TLS | TLS_TPREL; | |
4741 | goto dogottls; | |
4742 | ||
4743 | case R_PPC64_GOT_DTPREL16_DS: | |
4744 | case R_PPC64_GOT_DTPREL16_LO_DS: | |
4745 | case R_PPC64_GOT_DTPREL16_HI: | |
4746 | case R_PPC64_GOT_DTPREL16_HA: | |
87c69f97 | 4747 | case R_PPC64_GOT_DTPREL_PCREL34: |
411e1bfb AM |
4748 | tls_type = TLS_TLS | TLS_DTPREL; |
4749 | dogottls: | |
4750 | sec->has_tls_reloc = 1; | |
066f4018 | 4751 | goto dogot; |
411e1bfb | 4752 | |
903b777d AM |
4753 | case R_PPC64_GOT16: |
4754 | case R_PPC64_GOT16_LO: | |
4755 | case R_PPC64_GOT16_HI: | |
65f38f15 | 4756 | case R_PPC64_GOT16_HA: |
903b777d | 4757 | case R_PPC64_GOT16_DS: |
066f4018 | 4758 | case R_PPC64_GOT16_LO_DS: |
4a421c53 | 4759 | case R_PPC64_GOT_PCREL34: |
066f4018 | 4760 | dogot: |
65f38f15 | 4761 | /* This symbol requires a global offset table entry. */ |
4c52953f | 4762 | sec->has_toc_reloc = 1; |
33c0ec9d AM |
4763 | if (r_type == R_PPC64_GOT_TLSLD16 |
4764 | || r_type == R_PPC64_GOT_TLSGD16 | |
4765 | || r_type == R_PPC64_GOT_TPREL16_DS | |
4766 | || r_type == R_PPC64_GOT_DTPREL16_DS | |
4767 | || r_type == R_PPC64_GOT16 | |
4768 | || r_type == R_PPC64_GOT16_DS) | |
4769 | { | |
4770 | htab->do_multi_toc = 1; | |
d77c8a4b | 4771 | ppc64_elf_tdata (abfd)->has_small_toc_reloc = 1; |
33c0ec9d AM |
4772 | } |
4773 | ||
e717da7e AM |
4774 | if (ppc64_elf_tdata (abfd)->got == NULL |
4775 | && !create_got_section (abfd, info)) | |
b34976b6 | 4776 | return FALSE; |
5bd4f169 AM |
4777 | |
4778 | if (h != NULL) | |
4779 | { | |
411e1bfb AM |
4780 | struct ppc_link_hash_entry *eh; |
4781 | struct got_entry *ent; | |
65f38f15 | 4782 | |
ed7007c1 | 4783 | eh = ppc_elf_hash_entry (h); |
411e1bfb | 4784 | for (ent = eh->elf.got.glist; ent != NULL; ent = ent->next) |
133a1f60 | 4785 | if (ent->addend == rel->r_addend |
e717da7e | 4786 | && ent->owner == abfd |
411e1bfb AM |
4787 | && ent->tls_type == tls_type) |
4788 | break; | |
4789 | if (ent == NULL) | |
5bd4f169 | 4790 | { |
986f0783 | 4791 | size_t amt = sizeof (*ent); |
4ce794b7 | 4792 | ent = bfd_alloc (abfd, amt); |
411e1bfb | 4793 | if (ent == NULL) |
b34976b6 | 4794 | return FALSE; |
411e1bfb | 4795 | ent->next = eh->elf.got.glist; |
133a1f60 | 4796 | ent->addend = rel->r_addend; |
e717da7e | 4797 | ent->owner = abfd; |
411e1bfb | 4798 | ent->tls_type = tls_type; |
927be08e | 4799 | ent->is_indirect = FALSE; |
411e1bfb AM |
4800 | ent->got.refcount = 0; |
4801 | eh->elf.got.glist = ent; | |
5bd4f169 | 4802 | } |
411e1bfb | 4803 | ent->got.refcount += 1; |
e7b938ca | 4804 | eh->tls_mask |= tls_type; |
5bd4f169 | 4805 | } |
411e1bfb AM |
4806 | else |
4807 | /* This is a global offset table entry for a local symbol. */ | |
4808 | if (!update_local_sym_info (abfd, symtab_hdr, r_symndx, | |
133a1f60 | 4809 | rel->r_addend, tls_type)) |
411e1bfb | 4810 | return FALSE; |
5bd4f169 AM |
4811 | break; |
4812 | ||
5bd4f169 | 4813 | case R_PPC64_PLT16_HA: |
65f38f15 AM |
4814 | case R_PPC64_PLT16_HI: |
4815 | case R_PPC64_PLT16_LO: | |
08be3224 | 4816 | case R_PPC64_PLT16_LO_DS: |
5663e321 AM |
4817 | case R_PPC64_PLT_PCREL34: |
4818 | case R_PPC64_PLT_PCREL34_NOTOC: | |
65f38f15 AM |
4819 | case R_PPC64_PLT32: |
4820 | case R_PPC64_PLT64: | |
cbf95972 AM |
4821 | /* This symbol requires a procedure linkage table entry. */ |
4822 | plt_list = ifunc; | |
4823 | if (h != NULL) | |
e054468f | 4824 | { |
e054468f AM |
4825 | h->needs_plt = 1; |
4826 | if (h->root.root.string[0] == '.' | |
4827 | && h->root.root.string[1] != '\0') | |
ed7007c1 AM |
4828 | ppc_elf_hash_entry (h)->is_func = 1; |
4829 | ppc_elf_hash_entry (h)->tls_mask |= PLT_KEEP; | |
cbf95972 AM |
4830 | plt_list = &h->plt.plist; |
4831 | } | |
4832 | if (plt_list == NULL) | |
2d7ad24e | 4833 | plt_list = update_local_sym_info (abfd, symtab_hdr, r_symndx, |
133a1f60 | 4834 | rel->r_addend, |
2d7ad24e | 4835 | NON_GOT | PLT_KEEP); |
133a1f60 | 4836 | if (!update_plt_info (abfd, plt_list, rel->r_addend)) |
cbf95972 | 4837 | return FALSE; |
5bd4f169 AM |
4838 | break; |
4839 | ||
4840 | /* The following relocations don't need to propagate the | |
4841 | relocation if linking a shared object since they are | |
4842 | section relative. */ | |
4843 | case R_PPC64_SECTOFF: | |
4844 | case R_PPC64_SECTOFF_LO: | |
4845 | case R_PPC64_SECTOFF_HI: | |
4846 | case R_PPC64_SECTOFF_HA: | |
4847 | case R_PPC64_SECTOFF_DS: | |
4848 | case R_PPC64_SECTOFF_LO_DS: | |
411e1bfb AM |
4849 | case R_PPC64_DTPREL16: |
4850 | case R_PPC64_DTPREL16_LO: | |
4851 | case R_PPC64_DTPREL16_HI: | |
4852 | case R_PPC64_DTPREL16_HA: | |
4853 | case R_PPC64_DTPREL16_DS: | |
4854 | case R_PPC64_DTPREL16_LO_DS: | |
f9c6b907 AM |
4855 | case R_PPC64_DTPREL16_HIGH: |
4856 | case R_PPC64_DTPREL16_HIGHA: | |
411e1bfb AM |
4857 | case R_PPC64_DTPREL16_HIGHER: |
4858 | case R_PPC64_DTPREL16_HIGHERA: | |
4859 | case R_PPC64_DTPREL16_HIGHEST: | |
4860 | case R_PPC64_DTPREL16_HIGHESTA: | |
5bd4f169 AM |
4861 | break; |
4862 | ||
ad8e1ba5 | 4863 | /* Nor do these. */ |
25f23106 AM |
4864 | case R_PPC64_REL16: |
4865 | case R_PPC64_REL16_LO: | |
4866 | case R_PPC64_REL16_HI: | |
4867 | case R_PPC64_REL16_HA: | |
4a969973 AM |
4868 | case R_PPC64_REL16_HIGH: |
4869 | case R_PPC64_REL16_HIGHA: | |
4870 | case R_PPC64_REL16_HIGHER: | |
4871 | case R_PPC64_REL16_HIGHERA: | |
4872 | case R_PPC64_REL16_HIGHEST: | |
4873 | case R_PPC64_REL16_HIGHESTA: | |
5663e321 AM |
4874 | case R_PPC64_REL16_HIGHER34: |
4875 | case R_PPC64_REL16_HIGHERA34: | |
4876 | case R_PPC64_REL16_HIGHEST34: | |
4877 | case R_PPC64_REL16_HIGHESTA34: | |
a680de9a | 4878 | case R_PPC64_REL16DX_HA: |
25f23106 AM |
4879 | break; |
4880 | ||
45965137 AM |
4881 | /* Not supported as a dynamic relocation. */ |
4882 | case R_PPC64_ADDR64_LOCAL: | |
0e1862bb | 4883 | if (bfd_link_pic (info)) |
45965137 AM |
4884 | { |
4885 | if (!ppc64_elf_howto_table[R_PPC64_ADDR32]) | |
4886 | ppc_howto_init (); | |
695344c0 | 4887 | /* xgettext:c-format */ |
174d0a74 | 4888 | info->callbacks->einfo (_("%H: %s reloc unsupported " |
cf97bcb0 | 4889 | "in shared libraries and PIEs\n"), |
45965137 AM |
4890 | abfd, sec, rel->r_offset, |
4891 | ppc64_elf_howto_table[r_type]->name); | |
4892 | bfd_set_error (bfd_error_bad_value); | |
4893 | return FALSE; | |
4894 | } | |
4895 | break; | |
4896 | ||
ad8e1ba5 | 4897 | case R_PPC64_TOC16: |
33c0ec9d AM |
4898 | case R_PPC64_TOC16_DS: |
4899 | htab->do_multi_toc = 1; | |
d77c8a4b | 4900 | ppc64_elf_tdata (abfd)->has_small_toc_reloc = 1; |
1a0670f3 | 4901 | /* Fall through. */ |
ad8e1ba5 AM |
4902 | case R_PPC64_TOC16_LO: |
4903 | case R_PPC64_TOC16_HI: | |
4904 | case R_PPC64_TOC16_HA: | |
ad8e1ba5 | 4905 | case R_PPC64_TOC16_LO_DS: |
4c52953f | 4906 | sec->has_toc_reloc = 1; |
ec73ddcd | 4907 | if (h != NULL && bfd_link_executable (info)) |
1bdd8fac AM |
4908 | { |
4909 | /* We may need a copy reloc. */ | |
4910 | h->non_got_ref = 1; | |
4911 | /* Strongly prefer a copy reloc over a dynamic reloc. | |
4912 | glibc ld.so as of 2019-08 will error out if one of | |
4913 | these relocations is emitted. */ | |
4914 | h->needs_copy = 1; | |
4915 | goto dodyn; | |
4916 | } | |
ad8e1ba5 AM |
4917 | break; |
4918 | ||
006589cf AM |
4919 | /* Marker reloc. */ |
4920 | case R_PPC64_ENTRY: | |
4921 | break; | |
4922 | ||
5bd4f169 AM |
4923 | /* This relocation describes the C++ object vtable hierarchy. |
4924 | Reconstruct it for later use during GC. */ | |
4925 | case R_PPC64_GNU_VTINHERIT: | |
c152c796 | 4926 | if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset)) |
b34976b6 | 4927 | return FALSE; |
5bd4f169 AM |
4928 | break; |
4929 | ||
4930 | /* This relocation describes which C++ vtable entries are actually | |
4931 | used. Record for later use during GC. */ | |
4932 | case R_PPC64_GNU_VTENTRY: | |
a0ea3a14 | 4933 | if (!bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend)) |
b34976b6 | 4934 | return FALSE; |
5bd4f169 AM |
4935 | break; |
4936 | ||
721956f4 AM |
4937 | case R_PPC64_REL14: |
4938 | case R_PPC64_REL14_BRTAKEN: | |
4939 | case R_PPC64_REL14_BRNTAKEN: | |
220c76dd AM |
4940 | { |
4941 | asection *dest = NULL; | |
4942 | ||
4943 | /* Heuristic: If jumping outside our section, chances are | |
4944 | we are going to need a stub. */ | |
4945 | if (h != NULL) | |
4946 | { | |
4947 | /* If the sym is weak it may be overridden later, so | |
4948 | don't assume we know where a weak sym lives. */ | |
4949 | if (h->root.type == bfd_link_hash_defined) | |
4950 | dest = h->root.u.def.section; | |
4951 | } | |
4952 | else | |
87d72d41 AM |
4953 | { |
4954 | Elf_Internal_Sym *isym; | |
4955 | ||
f1dfbfdb | 4956 | isym = bfd_sym_from_r_symndx (&htab->elf.sym_cache, |
87d72d41 AM |
4957 | abfd, r_symndx); |
4958 | if (isym == NULL) | |
4959 | return FALSE; | |
4960 | ||
4961 | dest = bfd_section_from_elf_index (abfd, isym->st_shndx); | |
4962 | } | |
4963 | ||
220c76dd | 4964 | if (dest != sec) |
7c8fe5c4 | 4965 | ppc64_elf_section_data (sec)->has_14bit_branch = 1; |
220c76dd | 4966 | } |
3e04d765 AM |
4967 | goto rel24; |
4968 | ||
4969 | case R_PPC64_PLTCALL: | |
5663e321 | 4970 | case R_PPC64_PLTCALL_NOTOC: |
3e04d765 | 4971 | ppc64_elf_section_data (sec)->has_pltcall = 1; |
721956f4 AM |
4972 | /* Fall through. */ |
4973 | ||
5d1634d7 | 4974 | case R_PPC64_REL24: |
05d0e962 | 4975 | case R_PPC64_REL24_NOTOC: |
3e04d765 | 4976 | rel24: |
cbf95972 AM |
4977 | plt_list = ifunc; |
4978 | if (h != NULL) | |
5d1634d7 | 4979 | { |
e054468f AM |
4980 | h->needs_plt = 1; |
4981 | if (h->root.root.string[0] == '.' | |
4982 | && h->root.root.string[1] != '\0') | |
ed7007c1 | 4983 | ppc_elf_hash_entry (h)->is_func = 1; |
cbf95972 | 4984 | |
3a71aa26 | 4985 | if (h == tga || h == dottga) |
cbf95972 AM |
4986 | { |
4987 | sec->has_tls_reloc = 1; | |
4988 | if (rel != relocs | |
4989 | && (ELF64_R_TYPE (rel[-1].r_info) == R_PPC64_TLSGD | |
4990 | || ELF64_R_TYPE (rel[-1].r_info) == R_PPC64_TLSLD)) | |
4991 | /* We have a new-style __tls_get_addr call with | |
4992 | a marker reloc. */ | |
4993 | ; | |
4994 | else | |
4995 | /* Mark this section as having an old-style call. */ | |
9737e8af | 4996 | sec->nomark_tls_get_addr = 1; |
cbf95972 AM |
4997 | } |
4998 | plt_list = &h->plt.plist; | |
411e1bfb | 4999 | } |
cbf95972 AM |
5000 | |
5001 | /* We may need a .plt entry if the function this reloc | |
5002 | refers to is in a shared lib. */ | |
5003 | if (plt_list | |
133a1f60 | 5004 | && !update_plt_info (abfd, plt_list, rel->r_addend)) |
cbf95972 | 5005 | return FALSE; |
411e1bfb AM |
5006 | break; |
5007 | ||
cbf95972 AM |
5008 | case R_PPC64_ADDR14: |
5009 | case R_PPC64_ADDR14_BRNTAKEN: | |
5010 | case R_PPC64_ADDR14_BRTAKEN: | |
5011 | case R_PPC64_ADDR24: | |
5012 | goto dodyn; | |
5013 | ||
411e1bfb AM |
5014 | case R_PPC64_TPREL64: |
5015 | tls_type = TLS_EXPLICIT | TLS_TLS | TLS_TPREL; | |
7c8bbca5 | 5016 | if (bfd_link_dll (info)) |
411e1bfb AM |
5017 | info->flags |= DF_STATIC_TLS; |
5018 | goto dotlstoc; | |
5019 | ||
5020 | case R_PPC64_DTPMOD64: | |
5021 | if (rel + 1 < rel_end | |
5022 | && rel[1].r_info == ELF64_R_INFO (r_symndx, R_PPC64_DTPREL64) | |
5023 | && rel[1].r_offset == rel->r_offset + 8) | |
951fd09b | 5024 | tls_type = TLS_EXPLICIT | TLS_TLS | TLS_GD; |
411e1bfb | 5025 | else |
951fd09b | 5026 | tls_type = TLS_EXPLICIT | TLS_TLS | TLS_LD; |
411e1bfb AM |
5027 | goto dotlstoc; |
5028 | ||
5029 | case R_PPC64_DTPREL64: | |
5030 | tls_type = TLS_EXPLICIT | TLS_TLS | TLS_DTPREL; | |
5031 | if (rel != relocs | |
5032 | && rel[-1].r_info == ELF64_R_INFO (r_symndx, R_PPC64_DTPMOD64) | |
5033 | && rel[-1].r_offset == rel->r_offset - 8) | |
5034 | /* This is the second reloc of a dtpmod, dtprel pair. | |
5035 | Don't mark with TLS_DTPREL. */ | |
5036 | goto dodyn; | |
5037 | ||
5038 | dotlstoc: | |
5039 | sec->has_tls_reloc = 1; | |
5040 | if (h != NULL) | |
ed7007c1 | 5041 | ppc_elf_hash_entry (h)->tls_mask |= tls_type & 0xff; |
411e1bfb AM |
5042 | else |
5043 | if (!update_local_sym_info (abfd, symtab_hdr, r_symndx, | |
133a1f60 | 5044 | rel->r_addend, tls_type)) |
411e1bfb AM |
5045 | return FALSE; |
5046 | ||
7c8fe5c4 AM |
5047 | ppc64_sec = ppc64_elf_section_data (sec); |
5048 | if (ppc64_sec->sec_type != sec_toc) | |
411e1bfb | 5049 | { |
3a71aa26 AM |
5050 | bfd_size_type amt; |
5051 | ||
e7b938ca | 5052 | /* One extra to simplify get_tls_mask. */ |
3a71aa26 AM |
5053 | amt = sec->size * sizeof (unsigned) / 8 + sizeof (unsigned); |
5054 | ppc64_sec->u.toc.symndx = bfd_zalloc (abfd, amt); | |
5055 | if (ppc64_sec->u.toc.symndx == NULL) | |
5056 | return FALSE; | |
5057 | amt = sec->size * sizeof (bfd_vma) / 8; | |
5058 | ppc64_sec->u.toc.add = bfd_zalloc (abfd, amt); | |
5059 | if (ppc64_sec->u.toc.add == NULL) | |
411e1bfb | 5060 | return FALSE; |
7c8fe5c4 AM |
5061 | BFD_ASSERT (ppc64_sec->sec_type == sec_normal); |
5062 | ppc64_sec->sec_type = sec_toc; | |
411e1bfb AM |
5063 | } |
5064 | BFD_ASSERT (rel->r_offset % 8 == 0); | |
3a71aa26 | 5065 | ppc64_sec->u.toc.symndx[rel->r_offset / 8] = r_symndx; |
133a1f60 | 5066 | ppc64_sec->u.toc.add[rel->r_offset / 8] = rel->r_addend; |
951fd09b AM |
5067 | |
5068 | /* Mark the second slot of a GD or LD entry. | |
5069 | -1 to indicate GD and -2 to indicate LD. */ | |
5070 | if (tls_type == (TLS_EXPLICIT | TLS_TLS | TLS_GD)) | |
3a71aa26 | 5071 | ppc64_sec->u.toc.symndx[rel->r_offset / 8 + 1] = -1; |
951fd09b | 5072 | else if (tls_type == (TLS_EXPLICIT | TLS_TLS | TLS_LD)) |
3a71aa26 | 5073 | ppc64_sec->u.toc.symndx[rel->r_offset / 8 + 1] = -2; |
411e1bfb AM |
5074 | goto dodyn; |
5075 | ||
5076 | case R_PPC64_TPREL16: | |
5077 | case R_PPC64_TPREL16_LO: | |
5078 | case R_PPC64_TPREL16_HI: | |
5079 | case R_PPC64_TPREL16_HA: | |
5080 | case R_PPC64_TPREL16_DS: | |
5081 | case R_PPC64_TPREL16_LO_DS: | |
f9c6b907 AM |
5082 | case R_PPC64_TPREL16_HIGH: |
5083 | case R_PPC64_TPREL16_HIGHA: | |
411e1bfb AM |
5084 | case R_PPC64_TPREL16_HIGHER: |
5085 | case R_PPC64_TPREL16_HIGHERA: | |
5086 | case R_PPC64_TPREL16_HIGHEST: | |
5087 | case R_PPC64_TPREL16_HIGHESTA: | |
c213164a | 5088 | case R_PPC64_TPREL34: |
7c8bbca5 AM |
5089 | if (bfd_link_dll (info)) |
5090 | info->flags |= DF_STATIC_TLS; | |
5091 | goto dodyn; | |
5d1634d7 | 5092 | |
e86ce104 | 5093 | case R_PPC64_ADDR64: |
b9399fcf | 5094 | if (is_opd |
1e2f5b6e | 5095 | && rel + 1 < rel_end |
4ce794b7 | 5096 | && ELF64_R_TYPE ((rel + 1)->r_info) == R_PPC64_TOC) |
1e2f5b6e | 5097 | { |
8387904d | 5098 | if (h != NULL) |
ed7007c1 | 5099 | ppc_elf_hash_entry (h)->is_func = 1; |
1e2f5b6e | 5100 | } |
e86ce104 AM |
5101 | /* Fall through. */ |
5102 | ||
65f38f15 AM |
5103 | case R_PPC64_ADDR16: |
5104 | case R_PPC64_ADDR16_DS: | |
5105 | case R_PPC64_ADDR16_HA: | |
5106 | case R_PPC64_ADDR16_HI: | |
f9c6b907 AM |
5107 | case R_PPC64_ADDR16_HIGH: |
5108 | case R_PPC64_ADDR16_HIGHA: | |
65f38f15 AM |
5109 | case R_PPC64_ADDR16_HIGHER: |
5110 | case R_PPC64_ADDR16_HIGHERA: | |
5111 | case R_PPC64_ADDR16_HIGHEST: | |
5112 | case R_PPC64_ADDR16_HIGHESTA: | |
5113 | case R_PPC64_ADDR16_LO: | |
5114 | case R_PPC64_ADDR16_LO_DS: | |
5663e321 AM |
5115 | case R_PPC64_D34: |
5116 | case R_PPC64_D34_LO: | |
5117 | case R_PPC64_D34_HI30: | |
5118 | case R_PPC64_D34_HA30: | |
5119 | case R_PPC64_ADDR16_HIGHER34: | |
5120 | case R_PPC64_ADDR16_HIGHERA34: | |
5121 | case R_PPC64_ADDR16_HIGHEST34: | |
5122 | case R_PPC64_ADDR16_HIGHESTA34: | |
5123 | case R_PPC64_D28: | |
0e1862bb | 5124 | if (h != NULL && !bfd_link_pic (info) && abiversion (abfd) != 1 |
a345bc8d AM |
5125 | && rel->r_addend == 0) |
5126 | { | |
5127 | /* We may need a .plt entry if this reloc refers to a | |
5128 | function in a shared lib. */ | |
5663e321 | 5129 | if (!update_plt_info (abfd, &h->plt.plist, 0)) |
a345bc8d AM |
5130 | return FALSE; |
5131 | h->pointer_equality_needed = 1; | |
5132 | } | |
5133 | /* Fall through. */ | |
5134 | ||
5135 | case R_PPC64_REL30: | |
5136 | case R_PPC64_REL32: | |
5137 | case R_PPC64_REL64: | |
65f38f15 | 5138 | case R_PPC64_ADDR32: |
65f38f15 AM |
5139 | case R_PPC64_UADDR16: |
5140 | case R_PPC64_UADDR32: | |
5141 | case R_PPC64_UADDR64: | |
5bd4f169 | 5142 | case R_PPC64_TOC: |
ec73ddcd | 5143 | if (h != NULL && bfd_link_executable (info)) |
81848ca0 | 5144 | /* We may need a copy reloc. */ |
f5385ebf | 5145 | h->non_got_ref = 1; |
81848ca0 | 5146 | |
41bd81ab | 5147 | /* Don't propagate .opd relocs. */ |
b9399fcf | 5148 | if (NO_OPD_RELOCS && is_opd) |
e86ce104 | 5149 | break; |
e86ce104 | 5150 | |
65f38f15 AM |
5151 | /* If we are creating a shared library, and this is a reloc |
5152 | against a global symbol, or a non PC relative reloc | |
5153 | against a local symbol, then we need to copy the reloc | |
5154 | into the shared library. However, if we are linking with | |
5155 | -Bsymbolic, we do not need to copy a reloc against a | |
5156 | global symbol which is defined in an object we are | |
5157 | including in the link (i.e., DEF_REGULAR is set). At | |
5158 | this point we have not seen all the input files, so it is | |
5159 | possible that DEF_REGULAR is not set now but will be set | |
5160 | later (it is never cleared). In case of a weak definition, | |
5161 | DEF_REGULAR may be cleared later by a strong definition in | |
5162 | a shared library. We account for that possibility below by | |
f4656909 | 5163 | storing information in the dyn_relocs field of the hash |
65f38f15 AM |
5164 | table entry. A similar situation occurs when creating |
5165 | shared libraries and symbol visibility changes render the | |
5166 | symbol local. | |
5167 | ||
5168 | If on the other hand, we are creating an executable, we | |
5169 | may need to keep relocations for symbols satisfied by a | |
5170 | dynamic library if we manage to avoid copy relocs for the | |
5171 | symbol. */ | |
411e1bfb | 5172 | dodyn: |
ec73ddcd AM |
5173 | if ((h != NULL |
5174 | && (h->root.type == bfd_link_hash_defweak | |
5175 | || !h->def_regular)) | |
5176 | || (h != NULL | |
5177 | && !bfd_link_executable (info) | |
5178 | && !SYMBOLIC_BIND (info, h)) | |
5179 | || (bfd_link_pic (info) | |
5180 | && must_be_dyn_reloc (info, r_type)) | |
0e1862bb | 5181 | || (!bfd_link_pic (info) |
25f23106 | 5182 | && ifunc != NULL)) |
5bd4f169 | 5183 | { |
65f38f15 AM |
5184 | /* We must copy these reloc types into the output file. |
5185 | Create a reloc section in dynobj and make room for | |
5186 | this reloc. */ | |
5bd4f169 AM |
5187 | if (sreloc == NULL) |
5188 | { | |
83bac4b0 NC |
5189 | sreloc = _bfd_elf_make_dynamic_reloc_section |
5190 | (sec, htab->elf.dynobj, 3, abfd, /*rela?*/ TRUE); | |
65f38f15 | 5191 | |
5bd4f169 | 5192 | if (sreloc == NULL) |
83bac4b0 | 5193 | return FALSE; |
5bd4f169 AM |
5194 | } |
5195 | ||
65f38f15 AM |
5196 | /* If this is a global symbol, we count the number of |
5197 | relocations we need for this symbol. */ | |
5198 | if (h != NULL) | |
5199 | { | |
19e08130 AM |
5200 | struct elf_dyn_relocs *p; |
5201 | struct elf_dyn_relocs **head; | |
5202 | ||
190eb1dd | 5203 | head = &h->dyn_relocs; |
19e08130 AM |
5204 | p = *head; |
5205 | if (p == NULL || p->sec != sec) | |
5206 | { | |
5207 | p = bfd_alloc (htab->elf.dynobj, sizeof *p); | |
5208 | if (p == NULL) | |
5209 | return FALSE; | |
5210 | p->next = *head; | |
5211 | *head = p; | |
5212 | p->sec = sec; | |
5213 | p->count = 0; | |
5214 | p->pc_count = 0; | |
5215 | } | |
5216 | p->count += 1; | |
5217 | if (!must_be_dyn_reloc (info, r_type)) | |
5218 | p->pc_count += 1; | |
65f38f15 AM |
5219 | } |
5220 | else | |
5221 | { | |
ec338859 AM |
5222 | /* Track dynamic relocs needed for local syms too. |
5223 | We really need local syms available to do this | |
5224 | easily. Oh well. */ | |
19e08130 AM |
5225 | struct ppc_dyn_relocs *p; |
5226 | struct ppc_dyn_relocs **head; | |
5227 | bfd_boolean is_ifunc; | |
ec338859 | 5228 | asection *s; |
6edfbbad | 5229 | void *vpp; |
87d72d41 | 5230 | Elf_Internal_Sym *isym; |
6edfbbad | 5231 | |
f1dfbfdb | 5232 | isym = bfd_sym_from_r_symndx (&htab->elf.sym_cache, |
87d72d41 AM |
5233 | abfd, r_symndx); |
5234 | if (isym == NULL) | |
b34976b6 | 5235 | return FALSE; |
ec338859 | 5236 | |
87d72d41 AM |
5237 | s = bfd_section_from_elf_index (abfd, isym->st_shndx); |
5238 | if (s == NULL) | |
5239 | s = sec; | |
5240 | ||
6edfbbad | 5241 | vpp = &elf_section_data (s)->local_dynrel; |
19e08130 AM |
5242 | head = (struct ppc_dyn_relocs **) vpp; |
5243 | is_ifunc = ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC; | |
5244 | p = *head; | |
5245 | if (p != NULL && p->sec == sec && p->ifunc != is_ifunc) | |
5246 | p = p->next; | |
5247 | if (p == NULL || p->sec != sec || p->ifunc != is_ifunc) | |
5248 | { | |
5249 | p = bfd_alloc (htab->elf.dynobj, sizeof *p); | |
5250 | if (p == NULL) | |
5251 | return FALSE; | |
5252 | p->next = *head; | |
5253 | *head = p; | |
5254 | p->sec = sec; | |
5255 | p->ifunc = is_ifunc; | |
5256 | p->count = 0; | |
5257 | } | |
5258 | p->count += 1; | |
ec338859 | 5259 | } |
65f38f15 | 5260 | } |
5bd4f169 | 5261 | break; |
65f38f15 AM |
5262 | |
5263 | default: | |
96e0dda4 | 5264 | break; |
5bd4f169 AM |
5265 | } |
5266 | } | |
5267 | ||
b34976b6 | 5268 | return TRUE; |
5bd4f169 AM |
5269 | } |
5270 | ||
ee67d69a AM |
5271 | /* Merge backend specific data from an object file to the output |
5272 | object file when linking. */ | |
5273 | ||
5274 | static bfd_boolean | |
50e03d47 | 5275 | ppc64_elf_merge_private_bfd_data (bfd *ibfd, struct bfd_link_info *info) |
ee67d69a | 5276 | { |
50e03d47 | 5277 | bfd *obfd = info->output_bfd; |
ee67d69a AM |
5278 | unsigned long iflags, oflags; |
5279 | ||
5280 | if ((ibfd->flags & BFD_LINKER_CREATED) != 0) | |
5281 | return TRUE; | |
5282 | ||
5283 | if (!is_ppc64_elf (ibfd) || !is_ppc64_elf (obfd)) | |
5284 | return TRUE; | |
5285 | ||
50e03d47 | 5286 | if (!_bfd_generic_verify_endian_match (ibfd, info)) |
ee67d69a AM |
5287 | return FALSE; |
5288 | ||
5289 | iflags = elf_elfheader (ibfd)->e_flags; | |
5290 | oflags = elf_elfheader (obfd)->e_flags; | |
5291 | ||
f6c7c3e8 | 5292 | if (iflags & ~EF_PPC64_ABI) |
ee67d69a | 5293 | { |
4eca0228 | 5294 | _bfd_error_handler |
695344c0 | 5295 | /* xgettext:c-format */ |
871b3ab2 | 5296 | (_("%pB uses unknown e_flags 0x%lx"), ibfd, iflags); |
ee67d69a AM |
5297 | bfd_set_error (bfd_error_bad_value); |
5298 | return FALSE; | |
5299 | } | |
f6c7c3e8 | 5300 | else if (iflags != oflags && iflags != 0) |
ee67d69a | 5301 | { |
4eca0228 | 5302 | _bfd_error_handler |
695344c0 | 5303 | /* xgettext:c-format */ |
871b3ab2 | 5304 | (_("%pB: ABI version %ld is not compatible with ABI version %ld output"), |
ee67d69a AM |
5305 | ibfd, iflags, oflags); |
5306 | bfd_set_error (bfd_error_bad_value); | |
5307 | return FALSE; | |
5308 | } | |
5309 | ||
4a91d0ba AM |
5310 | if (!_bfd_elf_ppc_merge_fp_attributes (ibfd, info)) |
5311 | return FALSE; | |
005d79fd | 5312 | |
ee67d69a | 5313 | /* Merge Tag_compatibility attributes and any common GNU ones. */ |
8d2c8c3d | 5314 | return _bfd_elf_merge_object_attributes (ibfd, info); |
ee67d69a AM |
5315 | } |
5316 | ||
5317 | static bfd_boolean | |
5318 | ppc64_elf_print_private_bfd_data (bfd *abfd, void *ptr) | |
5319 | { | |
5320 | /* Print normal ELF private data. */ | |
5321 | _bfd_elf_print_private_bfd_data (abfd, ptr); | |
5322 | ||
5323 | if (elf_elfheader (abfd)->e_flags != 0) | |
5324 | { | |
5325 | FILE *file = ptr; | |
5326 | ||
ee67d69a AM |
5327 | fprintf (file, _("private flags = 0x%lx:"), |
5328 | elf_elfheader (abfd)->e_flags); | |
5329 | ||
5330 | if ((elf_elfheader (abfd)->e_flags & EF_PPC64_ABI) != 0) | |
5331 | fprintf (file, _(" [abiv%ld]"), | |
5332 | elf_elfheader (abfd)->e_flags & EF_PPC64_ABI); | |
5333 | fputc ('\n', file); | |
5334 | } | |
5335 | ||
5336 | return TRUE; | |
5337 | } | |
5338 | ||
8387904d | 5339 | /* OFFSET in OPD_SEC specifies a function descriptor. Return the address |
b53dfeb2 AM |
5340 | of the code entry point, and its section, which must be in the same |
5341 | object as OPD_SEC. Returns (bfd_vma) -1 on error. */ | |
8387904d AM |
5342 | |
5343 | static bfd_vma | |
5344 | opd_entry_value (asection *opd_sec, | |
5345 | bfd_vma offset, | |
5346 | asection **code_sec, | |
aef36ac1 AM |
5347 | bfd_vma *code_off, |
5348 | bfd_boolean in_code_sec) | |
8387904d AM |
5349 | { |
5350 | bfd *opd_bfd = opd_sec->owner; | |
8860955f | 5351 | Elf_Internal_Rela *relocs; |
8387904d | 5352 | Elf_Internal_Rela *lo, *hi, *look; |
645ea6a9 | 5353 | bfd_vma val; |
8387904d | 5354 | |
9f296da3 AM |
5355 | /* No relocs implies we are linking a --just-symbols object, or looking |
5356 | at a final linked executable with addr2line or somesuch. */ | |
4b85d634 AM |
5357 | if (opd_sec->reloc_count == 0) |
5358 | { | |
729eabd5 | 5359 | bfd_byte *contents = ppc64_elf_tdata (opd_bfd)->opd.contents; |
3b36f7e6 | 5360 | |
729eabd5 AM |
5361 | if (contents == NULL) |
5362 | { | |
5363 | if (!bfd_malloc_and_get_section (opd_bfd, opd_sec, &contents)) | |
5364 | return (bfd_vma) -1; | |
5365 | ppc64_elf_tdata (opd_bfd)->opd.contents = contents; | |
5366 | } | |
ee1e4ede | 5367 | |
dbb3fbbb | 5368 | /* PR 17512: file: 64b9dfbb. */ |
451dfd38 | 5369 | if (offset + 7 >= opd_sec->size || offset + 7 < offset) |
dbb3fbbb NC |
5370 | return (bfd_vma) -1; |
5371 | ||
729eabd5 | 5372 | val = bfd_get_64 (opd_bfd, contents + offset); |
aef36ac1 AM |
5373 | if (code_sec != NULL) |
5374 | { | |
5375 | asection *sec, *likely = NULL; | |
ee1e4ede | 5376 | |
aef36ac1 | 5377 | if (in_code_sec) |
4b85d634 | 5378 | { |
aef36ac1 AM |
5379 | sec = *code_sec; |
5380 | if (sec->vma <= val | |
5381 | && val < sec->vma + sec->size) | |
5382 | likely = sec; | |
5383 | else | |
5384 | val = -1; | |
5385 | } | |
5386 | else | |
5387 | for (sec = opd_bfd->sections; sec != NULL; sec = sec->next) | |
5388 | if (sec->vma <= val | |
5389 | && (sec->flags & SEC_LOAD) != 0 | |
5390 | && (sec->flags & SEC_ALLOC) != 0) | |
5391 | likely = sec; | |
5392 | if (likely != NULL) | |
5393 | { | |
5394 | *code_sec = likely; | |
5395 | if (code_off != NULL) | |
5396 | *code_off = val - likely->vma; | |
4b85d634 AM |
5397 | } |
5398 | } | |
aef36ac1 | 5399 | return val; |
4b85d634 AM |
5400 | } |
5401 | ||
0c8d6e5c | 5402 | BFD_ASSERT (is_ppc64_elf (opd_bfd)); |
0ffa91dd | 5403 | |
729eabd5 | 5404 | relocs = ppc64_elf_tdata (opd_bfd)->opd.relocs; |
8860955f AM |
5405 | if (relocs == NULL) |
5406 | relocs = _bfd_elf_link_read_relocs (opd_bfd, opd_sec, NULL, NULL, TRUE); | |
877a8638 NC |
5407 | /* PR 17512: file: df8e1fd6. */ |
5408 | if (relocs == NULL) | |
5409 | return (bfd_vma) -1; | |
645ea6a9 | 5410 | |
8387904d | 5411 | /* Go find the opd reloc at the sym address. */ |
8860955f | 5412 | lo = relocs; |
8387904d | 5413 | hi = lo + opd_sec->reloc_count - 1; /* ignore last reloc */ |
645ea6a9 | 5414 | val = (bfd_vma) -1; |
8387904d AM |
5415 | while (lo < hi) |
5416 | { | |
5417 | look = lo + (hi - lo) / 2; | |
5418 | if (look->r_offset < offset) | |
5419 | lo = look + 1; | |
5420 | else if (look->r_offset > offset) | |
5421 | hi = look; | |
5422 | else | |
5423 | { | |
0ffa91dd NC |
5424 | Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (opd_bfd); |
5425 | ||
8387904d AM |
5426 | if (ELF64_R_TYPE (look->r_info) == R_PPC64_ADDR64 |
5427 | && ELF64_R_TYPE ((look + 1)->r_info) == R_PPC64_TOC) | |
5428 | { | |
5429 | unsigned long symndx = ELF64_R_SYM (look->r_info); | |
b53dfeb2 | 5430 | asection *sec = NULL; |
8387904d | 5431 | |
b53dfeb2 AM |
5432 | if (symndx >= symtab_hdr->sh_info |
5433 | && elf_sym_hashes (opd_bfd) != NULL) | |
8387904d AM |
5434 | { |
5435 | struct elf_link_hash_entry **sym_hashes; | |
5436 | struct elf_link_hash_entry *rh; | |
5437 | ||
5438 | sym_hashes = elf_sym_hashes (opd_bfd); | |
5439 | rh = sym_hashes[symndx - symtab_hdr->sh_info]; | |
128205bb AM |
5440 | if (rh != NULL) |
5441 | { | |
5442 | rh = elf_follow_link (rh); | |
bb854a36 AM |
5443 | if (rh->root.type != bfd_link_hash_defined |
5444 | && rh->root.type != bfd_link_hash_defweak) | |
5445 | break; | |
5446 | if (rh->root.u.def.section->owner == opd_bfd) | |
b53dfeb2 | 5447 | { |
bb854a36 AM |
5448 | val = rh->root.u.def.value; |
5449 | sec = rh->root.u.def.section; | |
b53dfeb2 AM |
5450 | } |
5451 | } | |
5452 | } | |
5453 | ||
5454 | if (sec == NULL) | |
5455 | { | |
5456 | Elf_Internal_Sym *sym; | |
5457 | ||
5458 | if (symndx < symtab_hdr->sh_info) | |
5459 | { | |
5460 | sym = (Elf_Internal_Sym *) symtab_hdr->contents; | |
5461 | if (sym == NULL) | |
5462 | { | |
5463 | size_t symcnt = symtab_hdr->sh_info; | |
5464 | sym = bfd_elf_get_elf_syms (opd_bfd, symtab_hdr, | |
5465 | symcnt, 0, | |
5466 | NULL, NULL, NULL); | |
5467 | if (sym == NULL) | |
5468 | break; | |
5469 | symtab_hdr->contents = (bfd_byte *) sym; | |
5470 | } | |
5471 | sym += symndx; | |
128205bb AM |
5472 | } |
5473 | else | |
5474 | { | |
b53dfeb2 AM |
5475 | sym = bfd_elf_get_elf_syms (opd_bfd, symtab_hdr, |
5476 | 1, symndx, | |
5477 | NULL, NULL, NULL); | |
128205bb AM |
5478 | if (sym == NULL) |
5479 | break; | |
128205bb | 5480 | } |
b53dfeb2 AM |
5481 | sec = bfd_section_from_elf_index (opd_bfd, sym->st_shndx); |
5482 | if (sec == NULL) | |
5483 | break; | |
5484 | BFD_ASSERT ((sec->flags & SEC_MERGE) == 0); | |
5485 | val = sym->st_value; | |
8387904d | 5486 | } |
b53dfeb2 | 5487 | |
8387904d AM |
5488 | val += look->r_addend; |
5489 | if (code_off != NULL) | |
5490 | *code_off = val; | |
5491 | if (code_sec != NULL) | |
aef36ac1 AM |
5492 | { |
5493 | if (in_code_sec && *code_sec != sec) | |
5494 | return -1; | |
5495 | else | |
5496 | *code_sec = sec; | |
5497 | } | |
b53dfeb2 | 5498 | if (sec->output_section != NULL) |
8387904d | 5499 | val += sec->output_section->vma + sec->output_offset; |
8387904d AM |
5500 | } |
5501 | break; | |
5502 | } | |
5503 | } | |
645ea6a9 | 5504 | |
645ea6a9 | 5505 | return val; |
8387904d AM |
5506 | } |
5507 | ||
aef36ac1 AM |
5508 | /* If the ELF symbol SYM might be a function in SEC, return the |
5509 | function size and set *CODE_OFF to the function's entry point, | |
5510 | otherwise return zero. */ | |
9f296da3 | 5511 | |
aef36ac1 AM |
5512 | static bfd_size_type |
5513 | ppc64_elf_maybe_function_sym (const asymbol *sym, asection *sec, | |
5514 | bfd_vma *code_off) | |
9f296da3 | 5515 | { |
aef36ac1 AM |
5516 | bfd_size_type size; |
5517 | ||
5518 | if ((sym->flags & (BSF_SECTION_SYM | BSF_FILE | BSF_OBJECT | |
5519 | | BSF_THREAD_LOCAL | BSF_RELC | BSF_SRELC)) != 0) | |
5520 | return 0; | |
5521 | ||
5522 | size = 0; | |
5523 | if (!(sym->flags & BSF_SYNTHETIC)) | |
5524 | size = ((elf_symbol_type *) sym)->internal_elf_sym.st_size; | |
5525 | ||
5526 | if (strcmp (sym->section->name, ".opd") == 0) | |
9f296da3 | 5527 | { |
b07bca4e AM |
5528 | struct _opd_sec_data *opd = get_opd_info (sym->section); |
5529 | bfd_vma symval = sym->value; | |
5530 | ||
5531 | if (opd != NULL | |
5532 | && opd->adjust != NULL | |
5533 | && elf_section_data (sym->section)->relocs != NULL) | |
5534 | { | |
5535 | /* opd_entry_value will use cached relocs that have been | |
5536 | adjusted, but with raw symbols. That means both local | |
5537 | and global symbols need adjusting. */ | |
5538 | long adjust = opd->adjust[OPD_NDX (symval)]; | |
5539 | if (adjust == -1) | |
5540 | return 0; | |
5541 | symval += adjust; | |
5542 | } | |
5543 | ||
5544 | if (opd_entry_value (sym->section, symval, | |
aef36ac1 AM |
5545 | &sec, code_off, TRUE) == (bfd_vma) -1) |
5546 | return 0; | |
5547 | /* An old ABI binary with dot-syms has a size of 24 on the .opd | |
5548 | symbol. This size has nothing to do with the code size of the | |
5549 | function, which is what we're supposed to return, but the | |
5550 | code size isn't available without looking up the dot-sym. | |
5551 | However, doing that would be a waste of time particularly | |
5552 | since elf_find_function will look at the dot-sym anyway. | |
5553 | Now, elf_find_function will keep the largest size of any | |
5554 | function sym found at the code address of interest, so return | |
5555 | 1 here to avoid it incorrectly caching a larger function size | |
5556 | for a small function. This does mean we return the wrong | |
5557 | size for a new-ABI function of size 24, but all that does is | |
5558 | disable caching for such functions. */ | |
5559 | if (size == 24) | |
5560 | size = 1; | |
9f296da3 | 5561 | } |
aef36ac1 AM |
5562 | else |
5563 | { | |
5564 | if (sym->section != sec) | |
5565 | return 0; | |
5566 | *code_off = sym->value; | |
5567 | } | |
5568 | if (size == 0) | |
5569 | size = 1; | |
5570 | return size; | |
9f296da3 AM |
5571 | } |
5572 | ||
f378ab09 AM |
5573 | /* Return true if symbol is a strong function defined in an ELFv2 |
5574 | object with st_other localentry bits of zero, ie. its local entry | |
5575 | point coincides with its global entry point. */ | |
5576 | ||
5577 | static bfd_boolean | |
5578 | is_elfv2_localentry0 (struct elf_link_hash_entry *h) | |
5579 | { | |
5580 | return (h != NULL | |
5581 | && h->type == STT_FUNC | |
5582 | && h->root.type == bfd_link_hash_defined | |
5583 | && (STO_PPC64_LOCAL_MASK & h->other) == 0 | |
ed7007c1 | 5584 | && !ppc_elf_hash_entry (h)->non_zero_localentry |
f378ab09 AM |
5585 | && is_ppc64_elf (h->root.u.def.section->owner) |
5586 | && abiversion (h->root.u.def.section->owner) >= 2); | |
5587 | } | |
5588 | ||
854b41e7 AM |
5589 | /* Return true if symbol is defined in a regular object file. */ |
5590 | ||
5591 | static bfd_boolean | |
5592 | is_static_defined (struct elf_link_hash_entry *h) | |
5593 | { | |
5594 | return ((h->root.type == bfd_link_hash_defined | |
5595 | || h->root.type == bfd_link_hash_defweak) | |
5596 | && h->root.u.def.section != NULL | |
5597 | && h->root.u.def.section->output_section != NULL); | |
5598 | } | |
5599 | ||
b31867b6 AM |
5600 | /* If FDH is a function descriptor symbol, return the associated code |
5601 | entry symbol if it is defined. Return NULL otherwise. */ | |
5602 | ||
5603 | static struct ppc_link_hash_entry * | |
5604 | defined_code_entry (struct ppc_link_hash_entry *fdh) | |
5605 | { | |
5606 | if (fdh->is_func_descriptor) | |
5607 | { | |
5608 | struct ppc_link_hash_entry *fh = ppc_follow_link (fdh->oh); | |
5609 | if (fh->elf.root.type == bfd_link_hash_defined | |
5610 | || fh->elf.root.type == bfd_link_hash_defweak) | |
5611 | return fh; | |
5612 | } | |
5613 | return NULL; | |
5614 | } | |
5615 | ||
5616 | /* If FH is a function code entry symbol, return the associated | |
5617 | function descriptor symbol if it is defined. Return NULL otherwise. */ | |
5618 | ||
5619 | static struct ppc_link_hash_entry * | |
5620 | defined_func_desc (struct ppc_link_hash_entry *fh) | |
5621 | { | |
5622 | if (fh->oh != NULL | |
5623 | && fh->oh->is_func_descriptor) | |
5624 | { | |
5625 | struct ppc_link_hash_entry *fdh = ppc_follow_link (fh->oh); | |
5626 | if (fdh->elf.root.type == bfd_link_hash_defined | |
5627 | || fdh->elf.root.type == bfd_link_hash_defweak) | |
5628 | return fdh; | |
5629 | } | |
5630 | return NULL; | |
5631 | } | |
5632 | ||
ed7007c1 AM |
5633 | /* Given H is a symbol that satisfies is_static_defined, return the |
5634 | value in the output file. */ | |
5635 | ||
5636 | static bfd_vma | |
5637 | defined_sym_val (struct elf_link_hash_entry *h) | |
5638 | { | |
5639 | return (h->root.u.def.section->output_section->vma | |
5640 | + h->root.u.def.section->output_offset | |
5641 | + h->root.u.def.value); | |
5642 | } | |
5643 | ||
5644 | /* Return true if H matches __tls_get_addr or one of its variants. */ | |
5645 | ||
5646 | static bfd_boolean | |
5647 | is_tls_get_addr (struct elf_link_hash_entry *h, | |
5648 | struct ppc_link_hash_table *htab) | |
5649 | { | |
9e7028aa AM |
5650 | return (h == &htab->tls_get_addr_fd->elf || h == &htab->tga_desc_fd->elf |
5651 | || h == &htab->tls_get_addr->elf || h == &htab->tga_desc->elf); | |
ed7007c1 AM |
5652 | } |
5653 | ||
8c5b4e52 AM |
5654 | static bfd_boolean func_desc_adjust (struct elf_link_hash_entry *, void *); |
5655 | ||
5656 | /* Garbage collect sections, after first dealing with dot-symbols. */ | |
5657 | ||
5658 | static bfd_boolean | |
5659 | ppc64_elf_gc_sections (bfd *abfd, struct bfd_link_info *info) | |
5660 | { | |
5661 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
5662 | ||
5663 | if (htab != NULL && htab->need_func_desc_adj) | |
5664 | { | |
5665 | elf_link_hash_traverse (&htab->elf, func_desc_adjust, info); | |
5666 | htab->need_func_desc_adj = 0; | |
5667 | } | |
5668 | return bfd_elf_gc_sections (abfd, info); | |
5669 | } | |
5670 | ||
74f0fb50 AM |
5671 | /* Mark all our entry sym sections, both opd and code section. */ |
5672 | ||
5673 | static void | |
5674 | ppc64_elf_gc_keep (struct bfd_link_info *info) | |
5675 | { | |
5676 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
5677 | struct bfd_sym_chain *sym; | |
5678 | ||
4dfe6ac6 NC |
5679 | if (htab == NULL) |
5680 | return; | |
5681 | ||
74f0fb50 AM |
5682 | for (sym = info->gc_sym_list; sym != NULL; sym = sym->next) |
5683 | { | |
b31867b6 | 5684 | struct ppc_link_hash_entry *eh, *fh; |
74f0fb50 AM |
5685 | asection *sec; |
5686 | ||
ed7007c1 AM |
5687 | eh = ppc_elf_hash_entry (elf_link_hash_lookup (&htab->elf, sym->name, |
5688 | FALSE, FALSE, TRUE)); | |
74f0fb50 AM |
5689 | if (eh == NULL) |
5690 | continue; | |
5691 | if (eh->elf.root.type != bfd_link_hash_defined | |
5692 | && eh->elf.root.type != bfd_link_hash_defweak) | |
5693 | continue; | |
5694 | ||
b31867b6 AM |
5695 | fh = defined_code_entry (eh); |
5696 | if (fh != NULL) | |
74f0fb50 | 5697 | { |
b31867b6 | 5698 | sec = fh->elf.root.u.def.section; |
74f0fb50 AM |
5699 | sec->flags |= SEC_KEEP; |
5700 | } | |
5701 | else if (get_opd_info (eh->elf.root.u.def.section) != NULL | |
5702 | && opd_entry_value (eh->elf.root.u.def.section, | |
5703 | eh->elf.root.u.def.value, | |
aef36ac1 | 5704 | &sec, NULL, FALSE) != (bfd_vma) -1) |
74f0fb50 AM |
5705 | sec->flags |= SEC_KEEP; |
5706 | ||
5707 | sec = eh->elf.root.u.def.section; | |
5708 | sec->flags |= SEC_KEEP; | |
5709 | } | |
5710 | } | |
5711 | ||
64d03ab5 AM |
5712 | /* Mark sections containing dynamically referenced symbols. When |
5713 | building shared libraries, we must assume that any visible symbol is | |
5714 | referenced. */ | |
5715 | ||
5716 | static bfd_boolean | |
5717 | ppc64_elf_gc_mark_dynamic_ref (struct elf_link_hash_entry *h, void *inf) | |
5718 | { | |
5719 | struct bfd_link_info *info = (struct bfd_link_info *) inf; | |
ed7007c1 | 5720 | struct ppc_link_hash_entry *eh = ppc_elf_hash_entry (h); |
b31867b6 | 5721 | struct ppc_link_hash_entry *fdh; |
b407645f | 5722 | struct bfd_elf_dynamic_list *d = info->dynamic_list; |
64d03ab5 | 5723 | |
64d03ab5 | 5724 | /* Dynamic linking info is on the func descriptor sym. */ |
b31867b6 AM |
5725 | fdh = defined_func_desc (eh); |
5726 | if (fdh != NULL) | |
5727 | eh = fdh; | |
64d03ab5 AM |
5728 | |
5729 | if ((eh->elf.root.type == bfd_link_hash_defined | |
5730 | || eh->elf.root.type == bfd_link_hash_defweak) | |
87e79a65 | 5731 | && ((eh->elf.ref_dynamic && !eh->elf.forced_local) |
1c9177d9 | 5732 | || ((eh->elf.def_regular || ELF_COMMON_DEF_P (&eh->elf)) |
64d03ab5 | 5733 | && ELF_ST_VISIBILITY (eh->elf.other) != STV_INTERNAL |
4c58e0d8 | 5734 | && ELF_ST_VISIBILITY (eh->elf.other) != STV_HIDDEN |
0e1862bb | 5735 | && (!bfd_link_executable (info) |
e278ae05 | 5736 | || info->gc_keep_exported |
b407645f AM |
5737 | || info->export_dynamic |
5738 | || (eh->elf.dynamic | |
5739 | && d != NULL | |
2cdcc330 AM |
5740 | && (*d->match) (&d->head, NULL, |
5741 | eh->elf.root.root.string))) | |
e278ae05 | 5742 | && (eh->elf.versioned >= versioned |
4c58e0d8 AM |
5743 | || !bfd_hide_sym_by_version (info->version_info, |
5744 | eh->elf.root.root.string))))) | |
64d03ab5 AM |
5745 | { |
5746 | asection *code_sec; | |
b31867b6 | 5747 | struct ppc_link_hash_entry *fh; |
64d03ab5 AM |
5748 | |
5749 | eh->elf.root.u.def.section->flags |= SEC_KEEP; | |
5750 | ||
5751 | /* Function descriptor syms cause the associated | |
5752 | function code sym section to be marked. */ | |
b31867b6 AM |
5753 | fh = defined_code_entry (eh); |
5754 | if (fh != NULL) | |
5755 | { | |
5756 | code_sec = fh->elf.root.u.def.section; | |
5757 | code_sec->flags |= SEC_KEEP; | |
5758 | } | |
64d03ab5 AM |
5759 | else if (get_opd_info (eh->elf.root.u.def.section) != NULL |
5760 | && opd_entry_value (eh->elf.root.u.def.section, | |
5761 | eh->elf.root.u.def.value, | |
aef36ac1 | 5762 | &code_sec, NULL, FALSE) != (bfd_vma) -1) |
64d03ab5 AM |
5763 | code_sec->flags |= SEC_KEEP; |
5764 | } | |
5765 | ||
5766 | return TRUE; | |
5767 | } | |
5768 | ||
5bd4f169 AM |
5769 | /* Return the section that should be marked against GC for a given |
5770 | relocation. */ | |
5771 | ||
5772 | static asection * | |
4ce794b7 | 5773 | ppc64_elf_gc_mark_hook (asection *sec, |
fb34365b | 5774 | struct bfd_link_info *info, |
4ce794b7 AM |
5775 | Elf_Internal_Rela *rel, |
5776 | struct elf_link_hash_entry *h, | |
5777 | Elf_Internal_Sym *sym) | |
5bd4f169 | 5778 | { |
ccfa59ea AM |
5779 | asection *rsec; |
5780 | ||
ccfa59ea AM |
5781 | /* Syms return NULL if we're marking .opd, so we avoid marking all |
5782 | function sections, as all functions are referenced in .opd. */ | |
5783 | rsec = NULL; | |
5784 | if (get_opd_info (sec) != NULL) | |
5785 | return rsec; | |
1e2f5b6e | 5786 | |
5bd4f169 AM |
5787 | if (h != NULL) |
5788 | { | |
04c9666a | 5789 | enum elf_ppc64_reloc_type r_type; |
b31867b6 | 5790 | struct ppc_link_hash_entry *eh, *fh, *fdh; |
a33d1f77 | 5791 | |
4ce794b7 | 5792 | r_type = ELF64_R_TYPE (rel->r_info); |
a33d1f77 | 5793 | switch (r_type) |
5bd4f169 AM |
5794 | { |
5795 | case R_PPC64_GNU_VTINHERIT: | |
5796 | case R_PPC64_GNU_VTENTRY: | |
5797 | break; | |
5798 | ||
5799 | default: | |
5800 | switch (h->root.type) | |
5801 | { | |
5802 | case bfd_link_hash_defined: | |
5803 | case bfd_link_hash_defweak: | |
ed7007c1 | 5804 | eh = ppc_elf_hash_entry (h); |
b31867b6 AM |
5805 | fdh = defined_func_desc (eh); |
5806 | if (fdh != NULL) | |
8c5b4e52 AM |
5807 | { |
5808 | /* -mcall-aixdesc code references the dot-symbol on | |
5809 | a call reloc. Mark the function descriptor too | |
5810 | against garbage collection. */ | |
5811 | fdh->elf.mark = 1; | |
60d67dc8 AM |
5812 | if (fdh->elf.is_weakalias) |
5813 | weakdef (&fdh->elf)->mark = 1; | |
8c5b4e52 AM |
5814 | eh = fdh; |
5815 | } | |
1e2f5b6e AM |
5816 | |
5817 | /* Function descriptor syms cause the associated | |
5818 | function code sym section to be marked. */ | |
b31867b6 AM |
5819 | fh = defined_code_entry (eh); |
5820 | if (fh != NULL) | |
ccfa59ea AM |
5821 | { |
5822 | /* They also mark their opd section. */ | |
74f0fb50 | 5823 | eh->elf.root.u.def.section->gc_mark = 1; |
ccfa59ea | 5824 | |
b31867b6 | 5825 | rsec = fh->elf.root.u.def.section; |
ccfa59ea | 5826 | } |
8387904d AM |
5827 | else if (get_opd_info (eh->elf.root.u.def.section) != NULL |
5828 | && opd_entry_value (eh->elf.root.u.def.section, | |
5829 | eh->elf.root.u.def.value, | |
aef36ac1 | 5830 | &rsec, NULL, FALSE) != (bfd_vma) -1) |
74f0fb50 | 5831 | eh->elf.root.u.def.section->gc_mark = 1; |
ccfa59ea | 5832 | else |
1e2f5b6e AM |
5833 | rsec = h->root.u.def.section; |
5834 | break; | |
5bd4f169 AM |
5835 | |
5836 | case bfd_link_hash_common: | |
1e2f5b6e AM |
5837 | rsec = h->root.u.c.p->section; |
5838 | break; | |
5bd4f169 AM |
5839 | |
5840 | default: | |
fb34365b | 5841 | return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym); |
5bd4f169 AM |
5842 | } |
5843 | } | |
5844 | } | |
5845 | else | |
5846 | { | |
74f0fb50 | 5847 | struct _opd_sec_data *opd; |
1e2f5b6e AM |
5848 | |
5849 | rsec = bfd_section_from_elf_index (sec->owner, sym->st_shndx); | |
74f0fb50 AM |
5850 | opd = get_opd_info (rsec); |
5851 | if (opd != NULL && opd->func_sec != NULL) | |
ccfa59ea | 5852 | { |
74f0fb50 | 5853 | rsec->gc_mark = 1; |
ccfa59ea | 5854 | |
51aecdc5 | 5855 | rsec = opd->func_sec[OPD_NDX (sym->st_value + rel->r_addend)]; |
ccfa59ea | 5856 | } |
5bd4f169 AM |
5857 | } |
5858 | ||
1e2f5b6e | 5859 | return rsec; |
5bd4f169 AM |
5860 | } |
5861 | ||
deb0e272 AM |
5862 | /* The maximum size of .sfpr. */ |
5863 | #define SFPR_MAX (218*4) | |
5864 | ||
5865 | struct sfpr_def_parms | |
5866 | { | |
699733f6 AM |
5867 | const char name[12]; |
5868 | unsigned char lo, hi; | |
2cdcc330 AM |
5869 | bfd_byte *(*write_ent) (bfd *, bfd_byte *, int); |
5870 | bfd_byte *(*write_tail) (bfd *, bfd_byte *, int); | |
deb0e272 AM |
5871 | }; |
5872 | ||
a4b6fadd AM |
5873 | /* Auto-generate _save*, _rest* functions in .sfpr. |
5874 | If STUB_SEC is non-null, define alias symbols in STUB_SEC | |
5875 | instead. */ | |
deb0e272 | 5876 | |
4dfe6ac6 | 5877 | static bfd_boolean |
a4b6fadd AM |
5878 | sfpr_define (struct bfd_link_info *info, |
5879 | const struct sfpr_def_parms *parm, | |
5880 | asection *stub_sec) | |
deb0e272 AM |
5881 | { |
5882 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
5883 | unsigned int i; | |
5884 | size_t len = strlen (parm->name); | |
5885 | bfd_boolean writing = FALSE; | |
699733f6 | 5886 | char sym[16]; |
deb0e272 | 5887 | |
4dfe6ac6 NC |
5888 | if (htab == NULL) |
5889 | return FALSE; | |
5890 | ||
deb0e272 AM |
5891 | memcpy (sym, parm->name, len); |
5892 | sym[len + 2] = 0; | |
5893 | ||
5894 | for (i = parm->lo; i <= parm->hi; i++) | |
5895 | { | |
a4b6fadd | 5896 | struct ppc_link_hash_entry *h; |
deb0e272 AM |
5897 | |
5898 | sym[len + 0] = i / 10 + '0'; | |
5899 | sym[len + 1] = i % 10 + '0'; | |
ed7007c1 AM |
5900 | h = ppc_elf_hash_entry (elf_link_hash_lookup (&htab->elf, sym, |
5901 | writing, TRUE, TRUE)); | |
a4b6fadd | 5902 | if (stub_sec != NULL) |
deb0e272 | 5903 | { |
a4b6fadd AM |
5904 | if (h != NULL |
5905 | && h->elf.root.type == bfd_link_hash_defined | |
5906 | && h->elf.root.u.def.section == htab->sfpr) | |
5907 | { | |
5908 | struct elf_link_hash_entry *s; | |
5909 | char buf[32]; | |
5910 | sprintf (buf, "%08x.%s", stub_sec->id & 0xffffffff, sym); | |
5911 | s = elf_link_hash_lookup (&htab->elf, buf, TRUE, TRUE, FALSE); | |
5912 | if (s == NULL) | |
5913 | return FALSE; | |
779f2ae7 | 5914 | if (s->root.type == bfd_link_hash_new) |
a4b6fadd AM |
5915 | { |
5916 | s->root.type = bfd_link_hash_defined; | |
5917 | s->root.u.def.section = stub_sec; | |
7dda8d3c | 5918 | s->root.u.def.value = (stub_sec->size - htab->sfpr->size |
a4b6fadd AM |
5919 | + h->elf.root.u.def.value); |
5920 | s->ref_regular = 1; | |
5921 | s->def_regular = 1; | |
5922 | s->ref_regular_nonweak = 1; | |
5923 | s->forced_local = 1; | |
5924 | s->non_elf = 0; | |
5925 | s->root.linker_def = 1; | |
5926 | } | |
5927 | } | |
5928 | continue; | |
5929 | } | |
5930 | if (h != NULL) | |
5931 | { | |
5932 | h->save_res = 1; | |
5933 | if (!h->elf.def_regular) | |
deb0e272 | 5934 | { |
a4b6fadd AM |
5935 | h->elf.root.type = bfd_link_hash_defined; |
5936 | h->elf.root.u.def.section = htab->sfpr; | |
5937 | h->elf.root.u.def.value = htab->sfpr->size; | |
5938 | h->elf.type = STT_FUNC; | |
5939 | h->elf.def_regular = 1; | |
b32547cd | 5940 | h->elf.non_elf = 0; |
a4b6fadd AM |
5941 | _bfd_elf_link_hash_hide_symbol (info, &h->elf, TRUE); |
5942 | writing = TRUE; | |
deb0e272 | 5943 | if (htab->sfpr->contents == NULL) |
a4b6fadd | 5944 | { |
2cdcc330 AM |
5945 | htab->sfpr->contents |
5946 | = bfd_alloc (htab->elf.dynobj, SFPR_MAX); | |
a4b6fadd AM |
5947 | if (htab->sfpr->contents == NULL) |
5948 | return FALSE; | |
5949 | } | |
deb0e272 AM |
5950 | } |
5951 | } | |
5952 | if (writing) | |
5953 | { | |
5954 | bfd_byte *p = htab->sfpr->contents + htab->sfpr->size; | |
5955 | if (i != parm->hi) | |
5956 | p = (*parm->write_ent) (htab->elf.dynobj, p, i); | |
5957 | else | |
5958 | p = (*parm->write_tail) (htab->elf.dynobj, p, i); | |
5959 | htab->sfpr->size = p - htab->sfpr->contents; | |
5960 | } | |
5961 | } | |
5962 | ||
5963 | return TRUE; | |
5964 | } | |
5965 | ||
5966 | static bfd_byte * | |
5967 | savegpr0 (bfd *abfd, bfd_byte *p, int r) | |
5968 | { | |
5969 | bfd_put_32 (abfd, STD_R0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p); | |
5970 | return p + 4; | |
5971 | } | |
5972 | ||
5973 | static bfd_byte * | |
5974 | savegpr0_tail (bfd *abfd, bfd_byte *p, int r) | |
5975 | { | |
5976 | p = savegpr0 (abfd, p, r); | |
a078d95a | 5977 | bfd_put_32 (abfd, STD_R0_0R1 + STK_LR, p); |
deb0e272 AM |
5978 | p = p + 4; |
5979 | bfd_put_32 (abfd, BLR, p); | |
5980 | return p + 4; | |
5981 | } | |
5982 | ||
5983 | static bfd_byte * | |
5984 | restgpr0 (bfd *abfd, bfd_byte *p, int r) | |
5985 | { | |
5986 | bfd_put_32 (abfd, LD_R0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p); | |
5987 | return p + 4; | |
5988 | } | |
5989 | ||
5990 | static bfd_byte * | |
5991 | restgpr0_tail (bfd *abfd, bfd_byte *p, int r) | |
5992 | { | |
a078d95a | 5993 | bfd_put_32 (abfd, LD_R0_0R1 + STK_LR, p); |
deb0e272 AM |
5994 | p = p + 4; |
5995 | p = restgpr0 (abfd, p, r); | |
5996 | bfd_put_32 (abfd, MTLR_R0, p); | |
5997 | p = p + 4; | |
5998 | if (r == 29) | |
5999 | { | |
6000 | p = restgpr0 (abfd, p, 30); | |
6001 | p = restgpr0 (abfd, p, 31); | |
6002 | } | |
6003 | bfd_put_32 (abfd, BLR, p); | |
6004 | return p + 4; | |
6005 | } | |
6006 | ||
6007 | static bfd_byte * | |
6008 | savegpr1 (bfd *abfd, bfd_byte *p, int r) | |
6009 | { | |
6010 | bfd_put_32 (abfd, STD_R0_0R12 + (r << 21) + (1 << 16) - (32 - r) * 8, p); | |
6011 | return p + 4; | |
6012 | } | |
6013 | ||
6014 | static bfd_byte * | |
6015 | savegpr1_tail (bfd *abfd, bfd_byte *p, int r) | |
6016 | { | |
6017 | p = savegpr1 (abfd, p, r); | |
6018 | bfd_put_32 (abfd, BLR, p); | |
6019 | return p + 4; | |
6020 | } | |
6021 | ||
6022 | static bfd_byte * | |
6023 | restgpr1 (bfd *abfd, bfd_byte *p, int r) | |
6024 | { | |
6025 | bfd_put_32 (abfd, LD_R0_0R12 + (r << 21) + (1 << 16) - (32 - r) * 8, p); | |
6026 | return p + 4; | |
6027 | } | |
6028 | ||
6029 | static bfd_byte * | |
6030 | restgpr1_tail (bfd *abfd, bfd_byte *p, int r) | |
6031 | { | |
6032 | p = restgpr1 (abfd, p, r); | |
6033 | bfd_put_32 (abfd, BLR, p); | |
6034 | return p + 4; | |
6035 | } | |
6036 | ||
6037 | static bfd_byte * | |
6038 | savefpr (bfd *abfd, bfd_byte *p, int r) | |
6039 | { | |
6040 | bfd_put_32 (abfd, STFD_FR0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p); | |
6041 | return p + 4; | |
6042 | } | |
6043 | ||
6044 | static bfd_byte * | |
6045 | savefpr0_tail (bfd *abfd, bfd_byte *p, int r) | |
6046 | { | |
6047 | p = savefpr (abfd, p, r); | |
a078d95a | 6048 | bfd_put_32 (abfd, STD_R0_0R1 + STK_LR, p); |
deb0e272 AM |
6049 | p = p + 4; |
6050 | bfd_put_32 (abfd, BLR, p); | |
6051 | return p + 4; | |
6052 | } | |
6053 | ||
6054 | static bfd_byte * | |
6055 | restfpr (bfd *abfd, bfd_byte *p, int r) | |
6056 | { | |
6057 | bfd_put_32 (abfd, LFD_FR0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p); | |
6058 | return p + 4; | |
6059 | } | |
6060 | ||
6061 | static bfd_byte * | |
6062 | restfpr0_tail (bfd *abfd, bfd_byte *p, int r) | |
6063 | { | |
a078d95a | 6064 | bfd_put_32 (abfd, LD_R0_0R1 + STK_LR, p); |
deb0e272 AM |
6065 | p = p + 4; |
6066 | p = restfpr (abfd, p, r); | |
6067 | bfd_put_32 (abfd, MTLR_R0, p); | |
6068 | p = p + 4; | |
6069 | if (r == 29) | |
6070 | { | |
6071 | p = restfpr (abfd, p, 30); | |
6072 | p = restfpr (abfd, p, 31); | |
6073 | } | |
6074 | bfd_put_32 (abfd, BLR, p); | |
6075 | return p + 4; | |
6076 | } | |
6077 | ||
6078 | static bfd_byte * | |
6079 | savefpr1_tail (bfd *abfd, bfd_byte *p, int r) | |
6080 | { | |
6081 | p = savefpr (abfd, p, r); | |
6082 | bfd_put_32 (abfd, BLR, p); | |
6083 | return p + 4; | |
6084 | } | |
6085 | ||
6086 | static bfd_byte * | |
6087 | restfpr1_tail (bfd *abfd, bfd_byte *p, int r) | |
6088 | { | |
6089 | p = restfpr (abfd, p, r); | |
6090 | bfd_put_32 (abfd, BLR, p); | |
6091 | return p + 4; | |
6092 | } | |
6093 | ||
6094 | static bfd_byte * | |
6095 | savevr (bfd *abfd, bfd_byte *p, int r) | |
6096 | { | |
6097 | bfd_put_32 (abfd, LI_R12_0 + (1 << 16) - (32 - r) * 16, p); | |
6098 | p = p + 4; | |
6099 | bfd_put_32 (abfd, STVX_VR0_R12_R0 + (r << 21), p); | |
6100 | return p + 4; | |
6101 | } | |
6102 | ||
6103 | static bfd_byte * | |
6104 | savevr_tail (bfd *abfd, bfd_byte *p, int r) | |
6105 | { | |
6106 | p = savevr (abfd, p, r); | |
6107 | bfd_put_32 (abfd, BLR, p); | |
6108 | return p + 4; | |
6109 | } | |
6110 | ||
6111 | static bfd_byte * | |
6112 | restvr (bfd *abfd, bfd_byte *p, int r) | |
6113 | { | |
6114 | bfd_put_32 (abfd, LI_R12_0 + (1 << 16) - (32 - r) * 16, p); | |
6115 | p = p + 4; | |
6116 | bfd_put_32 (abfd, LVX_VR0_R12_R0 + (r << 21), p); | |
6117 | return p + 4; | |
6118 | } | |
6119 | ||
6120 | static bfd_byte * | |
6121 | restvr_tail (bfd *abfd, bfd_byte *p, int r) | |
6122 | { | |
6123 | p = restvr (abfd, p, r); | |
6124 | bfd_put_32 (abfd, BLR, p); | |
6125 | return p + 4; | |
6126 | } | |
6127 | ||
9e7028aa AM |
6128 | #define STDU_R1_0R1 0xf8210001 |
6129 | #define ADDI_R1_R1 0x38210000 | |
6130 | ||
6131 | /* Emit prologue of wrapper preserving regs around a call to | |
6132 | __tls_get_addr_opt. */ | |
6133 | ||
6134 | static bfd_byte * | |
6135 | tls_get_addr_prologue (bfd *obfd, bfd_byte *p, struct ppc_link_hash_table *htab) | |
6136 | { | |
6137 | unsigned int i; | |
6138 | ||
6139 | bfd_put_32 (obfd, MFLR_R0, p); | |
6140 | p += 4; | |
6141 | bfd_put_32 (obfd, STD_R0_0R1 + 16, p); | |
6142 | p += 4; | |
6143 | ||
6144 | if (htab->opd_abi) | |
6145 | { | |
6146 | for (i = 4; i < 12; i++) | |
6147 | { | |
6148 | bfd_put_32 (obfd, | |
6149 | STD_R0_0R1 | i << 21 | (-(13 - i) * 8 & 0xffff), p); | |
6150 | p += 4; | |
6151 | } | |
6152 | bfd_put_32 (obfd, STDU_R1_0R1 | (-128 & 0xffff), p); | |
6153 | p += 4; | |
6154 | } | |
6155 | else | |
6156 | { | |
6157 | for (i = 4; i < 12; i++) | |
6158 | { | |
6159 | bfd_put_32 (obfd, | |
6160 | STD_R0_0R1 | i << 21 | (-(12 - i) * 8 & 0xffff), p); | |
6161 | p += 4; | |
6162 | } | |
6163 | bfd_put_32 (obfd, STDU_R1_0R1 | (-96 & 0xffff), p); | |
6164 | p += 4; | |
6165 | } | |
6166 | return p; | |
6167 | } | |
6168 | ||
6169 | /* Emit epilogue of wrapper preserving regs around a call to | |
6170 | __tls_get_addr_opt. */ | |
6171 | ||
6172 | static bfd_byte * | |
6173 | tls_get_addr_epilogue (bfd *obfd, bfd_byte *p, struct ppc_link_hash_table *htab) | |
6174 | { | |
6175 | unsigned int i; | |
6176 | ||
6177 | if (htab->opd_abi) | |
6178 | { | |
6179 | for (i = 4; i < 12; i++) | |
6180 | { | |
6181 | bfd_put_32 (obfd, LD_R0_0R1 | i << 21 | (128 - (13 - i) * 8), p); | |
6182 | p += 4; | |
6183 | } | |
6184 | bfd_put_32 (obfd, ADDI_R1_R1 | 128, p); | |
6185 | p += 4; | |
6186 | } | |
6187 | else | |
6188 | { | |
6189 | for (i = 4; i < 12; i++) | |
6190 | { | |
6191 | bfd_put_32 (obfd, LD_R0_0R1 | i << 21 | (96 - (12 - i) * 8), p); | |
6192 | p += 4; | |
6193 | } | |
6194 | bfd_put_32 (obfd, ADDI_R1_R1 | 96, p); | |
6195 | p += 4; | |
6196 | } | |
6197 | bfd_put_32 (obfd, LD_R0_0R1 | 16, p); | |
6198 | p += 4; | |
6199 | bfd_put_32 (obfd, MTLR_R0, p); | |
6200 | p += 4; | |
6201 | bfd_put_32 (obfd, BLR, p); | |
6202 | p += 4; | |
6203 | return p; | |
6204 | } | |
6205 | ||
e86ce104 AM |
6206 | /* Called via elf_link_hash_traverse to transfer dynamic linking |
6207 | information on function code symbol entries to their corresponding | |
6208 | function descriptor symbol entries. */ | |
deb0e272 | 6209 | |
b34976b6 | 6210 | static bfd_boolean |
4ce794b7 | 6211 | func_desc_adjust (struct elf_link_hash_entry *h, void *inf) |
5bd4f169 | 6212 | { |
e86ce104 | 6213 | struct bfd_link_info *info; |
65f38f15 | 6214 | struct ppc_link_hash_table *htab; |
50bc7936 AM |
6215 | struct ppc_link_hash_entry *fh; |
6216 | struct ppc_link_hash_entry *fdh; | |
6217 | bfd_boolean force_local; | |
5bd4f169 | 6218 | |
ed7007c1 | 6219 | fh = ppc_elf_hash_entry (h); |
50bc7936 | 6220 | if (fh->elf.root.type == bfd_link_hash_indirect) |
b34976b6 | 6221 | return TRUE; |
e86ce104 | 6222 | |
8c5b4e52 AM |
6223 | if (!fh->is_func) |
6224 | return TRUE; | |
6225 | ||
6226 | if (fh->elf.root.root.string[0] != '.' | |
6227 | || fh->elf.root.root.string[1] == '\0') | |
6228 | return TRUE; | |
6229 | ||
4ce794b7 | 6230 | info = inf; |
65f38f15 | 6231 | htab = ppc_hash_table (info); |
4dfe6ac6 NC |
6232 | if (htab == NULL) |
6233 | return FALSE; | |
5bd4f169 | 6234 | |
8c5b4e52 AM |
6235 | /* Find the corresponding function descriptor symbol. */ |
6236 | fdh = lookup_fdh (fh, htab); | |
6237 | ||
c09bdfe5 AM |
6238 | /* Resolve undefined references to dot-symbols as the value |
6239 | in the function descriptor, if we have one in a regular object. | |
6240 | This is to satisfy cases like ".quad .foo". Calls to functions | |
6241 | in dynamic objects are handled elsewhere. */ | |
8c5b4e52 AM |
6242 | if ((fh->elf.root.type == bfd_link_hash_undefined |
6243 | || fh->elf.root.type == bfd_link_hash_undefweak) | |
6244 | && (fdh->elf.root.type == bfd_link_hash_defined | |
6245 | || fdh->elf.root.type == bfd_link_hash_defweak) | |
b31867b6 AM |
6246 | && get_opd_info (fdh->elf.root.u.def.section) != NULL |
6247 | && opd_entry_value (fdh->elf.root.u.def.section, | |
6248 | fdh->elf.root.u.def.value, | |
c09bdfe5 | 6249 | &fh->elf.root.u.def.section, |
aef36ac1 | 6250 | &fh->elf.root.u.def.value, FALSE) != (bfd_vma) -1) |
c09bdfe5 | 6251 | { |
b31867b6 | 6252 | fh->elf.root.type = fdh->elf.root.type; |
f5385ebf | 6253 | fh->elf.forced_local = 1; |
b31867b6 AM |
6254 | fh->elf.def_regular = fdh->elf.def_regular; |
6255 | fh->elf.def_dynamic = fdh->elf.def_dynamic; | |
c09bdfe5 AM |
6256 | } |
6257 | ||
8c5b4e52 AM |
6258 | if (!fh->elf.dynamic) |
6259 | { | |
6260 | struct plt_entry *ent; | |
5bd4f169 | 6261 | |
8c5b4e52 AM |
6262 | for (ent = fh->elf.plt.plist; ent != NULL; ent = ent->next) |
6263 | if (ent->plt.refcount > 0) | |
6264 | break; | |
6265 | if (ent == NULL) | |
6266 | return TRUE; | |
6267 | } | |
5bd4f169 | 6268 | |
8c5b4e52 | 6269 | /* Create a descriptor as undefined if necessary. */ |
50bc7936 | 6270 | if (fdh == NULL |
0e1862bb | 6271 | && !bfd_link_executable (info) |
50bc7936 AM |
6272 | && (fh->elf.root.type == bfd_link_hash_undefined |
6273 | || fh->elf.root.type == bfd_link_hash_undefweak)) | |
6274 | { | |
908b32fc | 6275 | fdh = make_fdh (info, fh); |
bb700d78 AM |
6276 | if (fdh == NULL) |
6277 | return FALSE; | |
50bc7936 | 6278 | } |
648cca2c | 6279 | |
8c5b4e52 | 6280 | /* We can't support overriding of symbols on a fake descriptor. */ |
908b32fc AM |
6281 | if (fdh != NULL |
6282 | && fdh->fake | |
8c5b4e52 AM |
6283 | && (fh->elf.root.type == bfd_link_hash_defined |
6284 | || fh->elf.root.type == bfd_link_hash_defweak)) | |
6285 | _bfd_elf_link_hash_hide_symbol (info, &fdh->elf, TRUE); | |
908b32fc | 6286 | |
8c5b4e52 AM |
6287 | /* Transfer dynamic linking information to the function descriptor. */ |
6288 | if (fdh != NULL) | |
6289 | { | |
f5385ebf AM |
6290 | fdh->elf.ref_regular |= fh->elf.ref_regular; |
6291 | fdh->elf.ref_dynamic |= fh->elf.ref_dynamic; | |
6292 | fdh->elf.ref_regular_nonweak |= fh->elf.ref_regular_nonweak; | |
6293 | fdh->elf.non_got_ref |= fh->elf.non_got_ref; | |
8c5b4e52 AM |
6294 | fdh->elf.dynamic |= fh->elf.dynamic; |
6295 | fdh->elf.needs_plt |= (fh->elf.needs_plt | |
6296 | || fh->elf.type == STT_FUNC | |
6297 | || fh->elf.type == STT_GNU_IFUNC); | |
6298 | move_plt_plist (fh, fdh); | |
6299 | ||
6300 | if (!fdh->elf.forced_local | |
6301 | && fh->elf.dynindx != -1) | |
6302 | if (!bfd_elf_link_record_dynamic_symbol (info, &fdh->elf)) | |
6303 | return FALSE; | |
e86ce104 AM |
6304 | } |
6305 | ||
50bc7936 AM |
6306 | /* Now that the info is on the function descriptor, clear the |
6307 | function code sym info. Any function code syms for which we | |
6308 | don't have a definition in a regular file, we force local. | |
6309 | This prevents a shared library from exporting syms that have | |
6310 | been imported from another library. Function code syms that | |
6311 | are really in the library we must leave global to prevent the | |
6312 | linker dragging in a definition from a static library. */ | |
93f3fa99 AM |
6313 | force_local = (!fh->elf.def_regular |
6314 | || fdh == NULL | |
6315 | || !fdh->elf.def_regular | |
6316 | || fdh->elf.forced_local); | |
50bc7936 AM |
6317 | _bfd_elf_link_hash_hide_symbol (info, &fh->elf, force_local); |
6318 | ||
b34976b6 | 6319 | return TRUE; |
e86ce104 | 6320 | } |
40b8271b | 6321 | |
a4b6fadd AM |
6322 | static const struct sfpr_def_parms save_res_funcs[] = |
6323 | { | |
6324 | { "_savegpr0_", 14, 31, savegpr0, savegpr0_tail }, | |
6325 | { "_restgpr0_", 14, 29, restgpr0, restgpr0_tail }, | |
6326 | { "_restgpr0_", 30, 31, restgpr0, restgpr0_tail }, | |
6327 | { "_savegpr1_", 14, 31, savegpr1, savegpr1_tail }, | |
6328 | { "_restgpr1_", 14, 31, restgpr1, restgpr1_tail }, | |
6329 | { "_savefpr_", 14, 31, savefpr, savefpr0_tail }, | |
6330 | { "_restfpr_", 14, 29, restfpr, restfpr0_tail }, | |
6331 | { "_restfpr_", 30, 31, restfpr, restfpr0_tail }, | |
6332 | { "._savef", 14, 31, savefpr, savefpr1_tail }, | |
6333 | { "._restf", 14, 31, restfpr, restfpr1_tail }, | |
6334 | { "_savevr_", 20, 31, savevr, savevr_tail }, | |
6335 | { "_restvr_", 20, 31, restvr, restvr_tail } | |
6336 | }; | |
6337 | ||
e86ce104 | 6338 | /* Called near the start of bfd_elf_size_dynamic_sections. We use |
82bd7b59 AM |
6339 | this hook to a) provide some gcc support functions, and b) transfer |
6340 | dynamic linking information gathered so far on function code symbol | |
6341 | entries, to their corresponding function descriptor symbol entries. */ | |
deb0e272 | 6342 | |
b34976b6 | 6343 | static bfd_boolean |
4ce794b7 AM |
6344 | ppc64_elf_func_desc_adjust (bfd *obfd ATTRIBUTE_UNUSED, |
6345 | struct bfd_link_info *info) | |
e86ce104 AM |
6346 | { |
6347 | struct ppc_link_hash_table *htab; | |
6348 | ||
6349 | htab = ppc_hash_table (info); | |
4dfe6ac6 NC |
6350 | if (htab == NULL) |
6351 | return FALSE; | |
6352 | ||
b32547cd AM |
6353 | /* Provide any missing _save* and _rest* functions. */ |
6354 | if (htab->sfpr != NULL) | |
6355 | { | |
6356 | unsigned int i; | |
6357 | ||
6358 | htab->sfpr->size = 0; | |
6359 | for (i = 0; i < ARRAY_SIZE (save_res_funcs); i++) | |
6360 | if (!sfpr_define (info, &save_res_funcs[i], NULL)) | |
6361 | return FALSE; | |
6362 | if (htab->sfpr->size == 0) | |
6363 | htab->sfpr->flags |= SEC_EXCLUDE; | |
6364 | } | |
6365 | ||
6366 | if (bfd_link_relocatable (info)) | |
6367 | return TRUE; | |
6368 | ||
6369 | if (htab->elf.hgot != NULL) | |
dba6fa9b AM |
6370 | { |
6371 | _bfd_elf_link_hash_hide_symbol (info, htab->elf.hgot, TRUE); | |
6372 | /* Make .TOC. defined so as to prevent it being made dynamic. | |
6373 | The wrong value here is fixed later in ppc64_elf_set_toc. */ | |
43417696 AM |
6374 | if (!htab->elf.hgot->def_regular |
6375 | || htab->elf.hgot->root.type != bfd_link_hash_defined) | |
6376 | { | |
6377 | htab->elf.hgot->root.type = bfd_link_hash_defined; | |
6378 | htab->elf.hgot->root.u.def.value = 0; | |
6379 | htab->elf.hgot->root.u.def.section = bfd_abs_section_ptr; | |
6380 | htab->elf.hgot->def_regular = 1; | |
6381 | htab->elf.hgot->root.linker_def = 1; | |
6382 | } | |
dba6fa9b | 6383 | htab->elf.hgot->type = STT_OBJECT; |
2cdcc330 AM |
6384 | htab->elf.hgot->other |
6385 | = (htab->elf.hgot->other & ~ELF_ST_VISIBILITY (-1)) | STV_HIDDEN; | |
dba6fa9b | 6386 | } |
c66bb0ee | 6387 | |
8c5b4e52 AM |
6388 | if (htab->need_func_desc_adj) |
6389 | { | |
6390 | elf_link_hash_traverse (&htab->elf, func_desc_adjust, info); | |
6391 | htab->need_func_desc_adj = 0; | |
6392 | } | |
805fc799 | 6393 | |
b34976b6 | 6394 | return TRUE; |
e86ce104 AM |
6395 | } |
6396 | ||
d311bc8b | 6397 | /* Return true if we have dynamic relocs against H or any of its weak |
ab2477e1 AM |
6398 | aliases, that apply to read-only sections. Cannot be used after |
6399 | size_dynamic_sections. */ | |
d311bc8b AM |
6400 | |
6401 | static bfd_boolean | |
6402 | alias_readonly_dynrelocs (struct elf_link_hash_entry *h) | |
6403 | { | |
ed7007c1 | 6404 | struct ppc_link_hash_entry *eh = ppc_elf_hash_entry (h); |
d311bc8b AM |
6405 | do |
6406 | { | |
5dbc8b37 | 6407 | if (_bfd_elf_readonly_dynrelocs (&eh->elf)) |
d311bc8b | 6408 | return TRUE; |
ed7007c1 | 6409 | eh = ppc_elf_hash_entry (eh->elf.u.alias); |
2cdcc330 AM |
6410 | } |
6411 | while (eh != NULL && &eh->elf != h); | |
d311bc8b AM |
6412 | |
6413 | return FALSE; | |
6414 | } | |
8a2058b5 | 6415 | |
8a9e8e72 AM |
6416 | /* Return whether EH has pc-relative dynamic relocs. */ |
6417 | ||
6418 | static bfd_boolean | |
6419 | pc_dynrelocs (struct ppc_link_hash_entry *eh) | |
6420 | { | |
6421 | struct elf_dyn_relocs *p; | |
6422 | ||
190eb1dd | 6423 | for (p = eh->elf.dyn_relocs; p != NULL; p = p->next) |
8a9e8e72 AM |
6424 | if (p->pc_count != 0) |
6425 | return TRUE; | |
6426 | return FALSE; | |
6427 | } | |
6428 | ||
8a2058b5 AM |
6429 | /* Return true if a global entry stub will be created for H. Valid |
6430 | for ELFv2 before plt entries have been allocated. */ | |
6431 | ||
6432 | static bfd_boolean | |
6433 | global_entry_stub (struct elf_link_hash_entry *h) | |
6434 | { | |
6435 | struct plt_entry *pent; | |
6436 | ||
6437 | if (!h->pointer_equality_needed | |
6438 | || h->def_regular) | |
6439 | return FALSE; | |
6440 | ||
6441 | for (pent = h->plt.plist; pent != NULL; pent = pent->next) | |
6442 | if (pent->plt.refcount > 0 | |
6443 | && pent->addend == 0) | |
6444 | return TRUE; | |
6445 | ||
6446 | return FALSE; | |
6447 | } | |
6448 | ||
e86ce104 AM |
6449 | /* Adjust a symbol defined by a dynamic object and referenced by a |
6450 | regular object. The current definition is in some section of the | |
6451 | dynamic object, but we're not including those sections. We have to | |
6452 | change the definition to something the rest of the link can | |
6453 | understand. */ | |
6454 | ||
b34976b6 | 6455 | static bfd_boolean |
4ce794b7 AM |
6456 | ppc64_elf_adjust_dynamic_symbol (struct bfd_link_info *info, |
6457 | struct elf_link_hash_entry *h) | |
e86ce104 AM |
6458 | { |
6459 | struct ppc_link_hash_table *htab; | |
5474d94f | 6460 | asection *s, *srel; |
e86ce104 AM |
6461 | |
6462 | htab = ppc_hash_table (info); | |
4dfe6ac6 NC |
6463 | if (htab == NULL) |
6464 | return FALSE; | |
e86ce104 AM |
6465 | |
6466 | /* Deal with function syms. */ | |
6467 | if (h->type == STT_FUNC | |
e054468f | 6468 | || h->type == STT_GNU_IFUNC |
f5385ebf | 6469 | || h->needs_plt) |
e86ce104 | 6470 | { |
ed7007c1 | 6471 | bfd_boolean local = (ppc_elf_hash_entry (h)->save_res |
529fe20e AM |
6472 | || SYMBOL_CALLS_LOCAL (info, h) |
6473 | || UNDEFWEAK_NO_DYNAMIC_RELOC (info, h)); | |
6474 | /* Discard dyn_relocs when non-pic if we've decided that a | |
6475 | function symbol is local and not an ifunc. We keep dynamic | |
6476 | relocs for ifuncs when local rather than always emitting a | |
6477 | plt call stub for them and defining the symbol on the call | |
6478 | stub. We can't do that for ELFv1 anyway (a function symbol | |
6479 | is defined on a descriptor, not code) and it can be faster at | |
6480 | run-time due to not needing to bounce through a stub. The | |
6481 | dyn_relocs for ifuncs will be applied even in a static | |
6482 | executable. */ | |
6483 | if (!bfd_link_pic (info) | |
6484 | && h->type != STT_GNU_IFUNC | |
6485 | && local) | |
190eb1dd | 6486 | h->dyn_relocs = NULL; |
529fe20e | 6487 | |
e86ce104 AM |
6488 | /* Clear procedure linkage table information for any symbol that |
6489 | won't need a .plt entry. */ | |
411e1bfb AM |
6490 | struct plt_entry *ent; |
6491 | for (ent = h->plt.plist; ent != NULL; ent = ent->next) | |
6492 | if (ent->plt.refcount > 0) | |
6493 | break; | |
8387904d | 6494 | if (ent == NULL |
2d7ad24e AM |
6495 | || (h->type != STT_GNU_IFUNC |
6496 | && local | |
3e04d765 | 6497 | && (htab->can_convert_all_inline_plt |
ed7007c1 | 6498 | || (ppc_elf_hash_entry (h)->tls_mask |
3e04d765 | 6499 | & (TLS_TLS | PLT_KEEP)) != PLT_KEEP))) |
40b8271b | 6500 | { |
411e1bfb | 6501 | h->plt.plist = NULL; |
f5385ebf | 6502 | h->needs_plt = 0; |
d1eca1e4 | 6503 | h->pointer_equality_needed = 0; |
40b8271b | 6504 | } |
8a2058b5 | 6505 | else if (abiversion (info->output_bfd) >= 2) |
a345bc8d | 6506 | { |
d1eca1e4 AM |
6507 | /* Taking a function's address in a read/write section |
6508 | doesn't require us to define the function symbol in the | |
6509 | executable on a global entry stub. A dynamic reloc can | |
8a2058b5 AM |
6510 | be used instead. The reason we prefer a few more dynamic |
6511 | relocs is that calling via a global entry stub costs a | |
6512 | few more instructions, and pointer_equality_needed causes | |
6513 | extra work in ld.so when resolving these symbols. */ | |
529fe20e | 6514 | if (global_entry_stub (h)) |
d1eca1e4 | 6515 | { |
5dbc8b37 | 6516 | if (!_bfd_elf_readonly_dynrelocs (h)) |
529fe20e AM |
6517 | { |
6518 | h->pointer_equality_needed = 0; | |
04383fd1 AM |
6519 | /* If we haven't seen a branch reloc and the symbol |
6520 | isn't an ifunc then we don't need a plt entry. */ | |
529fe20e AM |
6521 | if (!h->needs_plt) |
6522 | h->plt.plist = NULL; | |
6523 | } | |
6524 | else if (!bfd_link_pic (info)) | |
6525 | /* We are going to be defining the function symbol on the | |
6526 | plt stub, so no dyn_relocs needed when non-pic. */ | |
190eb1dd | 6527 | h->dyn_relocs = NULL; |
d1eca1e4 AM |
6528 | } |
6529 | ||
3988aed5 AM |
6530 | /* ELFv2 function symbols can't have copy relocs. */ |
6531 | return TRUE; | |
6532 | } | |
6533 | else if (!h->needs_plt | |
5dbc8b37 | 6534 | && !_bfd_elf_readonly_dynrelocs (h)) |
3988aed5 | 6535 | { |
04383fd1 AM |
6536 | /* If we haven't seen a branch reloc and the symbol isn't an |
6537 | ifunc then we don't need a plt entry. */ | |
3988aed5 AM |
6538 | h->plt.plist = NULL; |
6539 | h->pointer_equality_needed = 0; | |
a345bc8d AM |
6540 | return TRUE; |
6541 | } | |
5bd4f169 | 6542 | } |
bbd7ec4a | 6543 | else |
411e1bfb | 6544 | h->plt.plist = NULL; |
5bd4f169 AM |
6545 | |
6546 | /* If this is a weak symbol, and there is a real definition, the | |
6547 | processor independent code will have arranged for us to see the | |
6548 | real definition first, and we can just use the same value. */ | |
60d67dc8 | 6549 | if (h->is_weakalias) |
5bd4f169 | 6550 | { |
60d67dc8 AM |
6551 | struct elf_link_hash_entry *def = weakdef (h); |
6552 | BFD_ASSERT (def->root.type == bfd_link_hash_defined); | |
6553 | h->root.u.def.section = def->root.u.def.section; | |
6554 | h->root.u.def.value = def->root.u.def.value; | |
4a7e5234 AM |
6555 | if (def->root.u.def.section == htab->elf.sdynbss |
6556 | || def->root.u.def.section == htab->elf.sdynrelro) | |
190eb1dd | 6557 | h->dyn_relocs = NULL; |
b34976b6 | 6558 | return TRUE; |
5bd4f169 AM |
6559 | } |
6560 | ||
5bd4f169 AM |
6561 | /* If we are creating a shared library, we must presume that the |
6562 | only references to the symbol are via the global offset table. | |
6563 | For such cases we need not do anything here; the relocations will | |
6564 | be handled correctly by relocate_section. */ | |
ec73ddcd | 6565 | if (!bfd_link_executable (info)) |
b34976b6 | 6566 | return TRUE; |
5bd4f169 | 6567 | |
65f38f15 AM |
6568 | /* If there are no references to this symbol that do not use the |
6569 | GOT, we don't need to generate a copy reloc. */ | |
f5385ebf | 6570 | if (!h->non_got_ref) |
b34976b6 | 6571 | return TRUE; |
65f38f15 | 6572 | |
b186458a | 6573 | /* Don't generate a copy reloc for symbols defined in the executable. */ |
d93d1c80 | 6574 | if (!h->def_dynamic || !h->ref_regular || h->def_regular |
b186458a | 6575 | |
d93d1c80 AM |
6576 | /* If -z nocopyreloc was given, don't generate them either. */ |
6577 | || info->nocopyreloc | |
a127494f | 6578 | |
dce2246a | 6579 | /* If we don't find any dynamic relocs in read-only sections, then |
d93d1c80 | 6580 | we'll be keeping the dynamic relocs and avoiding the copy reloc. */ |
1bdd8fac AM |
6581 | || (ELIMINATE_COPY_RELOCS |
6582 | && !h->needs_copy | |
6583 | && !alias_readonly_dynrelocs (h)) | |
65f38f15 | 6584 | |
d93d1c80 AM |
6585 | /* Protected variables do not work with .dynbss. The copy in |
6586 | .dynbss won't be used by the shared library with the protected | |
6587 | definition for the variable. Text relocations are preferable | |
6588 | to an incorrect program. */ | |
6589 | || h->protected_def) | |
529fe20e | 6590 | return TRUE; |
a127494f | 6591 | |
e1c6cf61 AM |
6592 | if (h->type == STT_FUNC |
6593 | || h->type == STT_GNU_IFUNC) | |
97b639ba | 6594 | { |
e1c6cf61 AM |
6595 | /* .dynbss copies of function symbols only work if we have |
6596 | ELFv1 dot-symbols. ELFv1 compilers since 2004 default to not | |
6597 | use dot-symbols and set the function symbol size to the text | |
6598 | size of the function rather than the size of the descriptor. | |
6599 | That's wrong for copying a descriptor. */ | |
ed7007c1 | 6600 | if (ppc_elf_hash_entry (h)->oh == NULL |
e1c6cf61 AM |
6601 | || !(h->size == 24 || h->size == 16)) |
6602 | return TRUE; | |
6603 | ||
6604 | /* We should never get here, but unfortunately there are old | |
6605 | versions of gcc (circa gcc-3.2) that improperly for the | |
6606 | ELFv1 ABI put initialized function pointers, vtable refs and | |
6607 | suchlike in read-only sections. Allow them to proceed, but | |
6608 | warn that this might break at runtime. */ | |
25f53a85 | 6609 | info->callbacks->einfo |
c1c8c1ef | 6610 | (_("%P: copy reloc against `%pT' requires lazy plt linking; " |
25f53a85 | 6611 | "avoid setting LD_BIND_NOW=1 or upgrade gcc\n"), |
97b639ba AM |
6612 | h->root.root.string); |
6613 | } | |
5d35169e AM |
6614 | |
6615 | /* This is a reference to a symbol defined by a dynamic object which | |
6616 | is not a function. */ | |
6617 | ||
5bd4f169 AM |
6618 | /* We must allocate the symbol in our .dynbss section, which will |
6619 | become part of the .bss section of the executable. There will be | |
6620 | an entry for this symbol in the .dynsym section. The dynamic | |
6621 | object will contain position independent code, so all references | |
6622 | from the dynamic object to this symbol will go through the global | |
6623 | offset table. The dynamic linker will use the .dynsym entry to | |
6624 | determine the address it must put in the global offset table, so | |
6625 | both the dynamic object and the regular object will refer to the | |
6626 | same memory location for the variable. */ | |
5474d94f AM |
6627 | if ((h->root.u.def.section->flags & SEC_READONLY) != 0) |
6628 | { | |
6629 | s = htab->elf.sdynrelro; | |
6630 | srel = htab->elf.sreldynrelro; | |
6631 | } | |
6632 | else | |
6633 | { | |
6634 | s = htab->elf.sdynbss; | |
6635 | srel = htab->elf.srelbss; | |
6636 | } | |
1d7e9d18 | 6637 | if ((h->root.u.def.section->flags & SEC_ALLOC) != 0 && h->size != 0) |
5bd4f169 | 6638 | { |
4a7e5234 AM |
6639 | /* We must generate a R_PPC64_COPY reloc to tell the dynamic |
6640 | linker to copy the initial value out of the dynamic object | |
6641 | and into the runtime process image. */ | |
5474d94f | 6642 | srel->size += sizeof (Elf64_External_Rela); |
f5385ebf | 6643 | h->needs_copy = 1; |
5bd4f169 AM |
6644 | } |
6645 | ||
529fe20e | 6646 | /* We no longer want dyn_relocs. */ |
190eb1dd | 6647 | h->dyn_relocs = NULL; |
6cabe1ea | 6648 | return _bfd_elf_adjust_dynamic_copy (info, h, s); |
5bd4f169 AM |
6649 | } |
6650 | ||
e86ce104 AM |
6651 | /* If given a function descriptor symbol, hide both the function code |
6652 | sym and the descriptor. */ | |
6653 | static void | |
4ce794b7 AM |
6654 | ppc64_elf_hide_symbol (struct bfd_link_info *info, |
6655 | struct elf_link_hash_entry *h, | |
6656 | bfd_boolean force_local) | |
e86ce104 | 6657 | { |
34814b9f | 6658 | struct ppc_link_hash_entry *eh; |
e86ce104 AM |
6659 | _bfd_elf_link_hash_hide_symbol (info, h, force_local); |
6660 | ||
87469ba2 AM |
6661 | if (ppc_hash_table (info) == NULL) |
6662 | return; | |
6663 | ||
ed7007c1 | 6664 | eh = ppc_elf_hash_entry (h); |
34814b9f | 6665 | if (eh->is_func_descriptor) |
e86ce104 | 6666 | { |
34814b9f | 6667 | struct ppc_link_hash_entry *fh = eh->oh; |
e86ce104 | 6668 | |
721956f4 | 6669 | if (fh == NULL) |
d1329ca3 AM |
6670 | { |
6671 | const char *p, *q; | |
b8ac2841 | 6672 | struct elf_link_hash_table *htab = elf_hash_table (info); |
d1329ca3 AM |
6673 | char save; |
6674 | ||
6675 | /* We aren't supposed to use alloca in BFD because on | |
6676 | systems which do not have alloca the version in libiberty | |
6677 | calls xmalloc, which might cause the program to crash | |
6678 | when it runs out of memory. This function doesn't have a | |
6679 | return status, so there's no way to gracefully return an | |
6680 | error. So cheat. We know that string[-1] can be safely | |
34814b9f AM |
6681 | accessed; It's either a string in an ELF string table, |
6682 | or allocated in an objalloc structure. */ | |
d1329ca3 | 6683 | |
34814b9f | 6684 | p = eh->elf.root.root.string - 1; |
d1329ca3 AM |
6685 | save = *p; |
6686 | *(char *) p = '.'; | |
ed7007c1 AM |
6687 | fh = ppc_elf_hash_entry (elf_link_hash_lookup (htab, p, FALSE, |
6688 | FALSE, FALSE)); | |
d1329ca3 AM |
6689 | *(char *) p = save; |
6690 | ||
6691 | /* Unfortunately, if it so happens that the string we were | |
6692 | looking for was allocated immediately before this string, | |
6693 | then we overwrote the string terminator. That's the only | |
6694 | reason the lookup should fail. */ | |
6695 | if (fh == NULL) | |
6696 | { | |
34814b9f AM |
6697 | q = eh->elf.root.root.string + strlen (eh->elf.root.root.string); |
6698 | while (q >= eh->elf.root.root.string && *q == *p) | |
d1329ca3 | 6699 | --q, --p; |
34814b9f | 6700 | if (q < eh->elf.root.root.string && *p == '.') |
ed7007c1 AM |
6701 | fh = ppc_elf_hash_entry (elf_link_hash_lookup (htab, p, FALSE, |
6702 | FALSE, FALSE)); | |
d1329ca3 AM |
6703 | } |
6704 | if (fh != NULL) | |
6705 | { | |
34814b9f AM |
6706 | eh->oh = fh; |
6707 | fh->oh = eh; | |
d1329ca3 AM |
6708 | } |
6709 | } | |
e86ce104 | 6710 | if (fh != NULL) |
34814b9f | 6711 | _bfd_elf_link_hash_hide_symbol (info, &fh->elf, force_local); |
e86ce104 AM |
6712 | } |
6713 | } | |
6714 | ||
411e1bfb | 6715 | static bfd_boolean |
8843416a AM |
6716 | get_sym_h (struct elf_link_hash_entry **hp, |
6717 | Elf_Internal_Sym **symp, | |
6718 | asection **symsecp, | |
f961d9dd | 6719 | unsigned char **tls_maskp, |
8843416a AM |
6720 | Elf_Internal_Sym **locsymsp, |
6721 | unsigned long r_symndx, | |
6722 | bfd *ibfd) | |
411e1bfb | 6723 | { |
0ffa91dd | 6724 | Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (ibfd); |
411e1bfb AM |
6725 | |
6726 | if (r_symndx >= symtab_hdr->sh_info) | |
6727 | { | |
6728 | struct elf_link_hash_entry **sym_hashes = elf_sym_hashes (ibfd); | |
6729 | struct elf_link_hash_entry *h; | |
6730 | ||
6731 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; | |
b31867b6 | 6732 | h = elf_follow_link (h); |
411e1bfb AM |
6733 | |
6734 | if (hp != NULL) | |
6735 | *hp = h; | |
6736 | ||
6737 | if (symp != NULL) | |
6738 | *symp = NULL; | |
6739 | ||
6740 | if (symsecp != NULL) | |
6741 | { | |
6742 | asection *symsec = NULL; | |
6743 | if (h->root.type == bfd_link_hash_defined | |
6744 | || h->root.type == bfd_link_hash_defweak) | |
6745 | symsec = h->root.u.def.section; | |
6746 | *symsecp = symsec; | |
6747 | } | |
6748 | ||
e7b938ca | 6749 | if (tls_maskp != NULL) |
ed7007c1 | 6750 | *tls_maskp = &ppc_elf_hash_entry (h)->tls_mask; |
411e1bfb AM |
6751 | } |
6752 | else | |
6753 | { | |
6754 | Elf_Internal_Sym *sym; | |
6755 | Elf_Internal_Sym *locsyms = *locsymsp; | |
6756 | ||
6757 | if (locsyms == NULL) | |
6758 | { | |
6759 | locsyms = (Elf_Internal_Sym *) symtab_hdr->contents; | |
6760 | if (locsyms == NULL) | |
6761 | locsyms = bfd_elf_get_elf_syms (ibfd, symtab_hdr, | |
6762 | symtab_hdr->sh_info, | |
6763 | 0, NULL, NULL, NULL); | |
6764 | if (locsyms == NULL) | |
6765 | return FALSE; | |
6766 | *locsymsp = locsyms; | |
6767 | } | |
6768 | sym = locsyms + r_symndx; | |
6769 | ||
6770 | if (hp != NULL) | |
6771 | *hp = NULL; | |
6772 | ||
6773 | if (symp != NULL) | |
6774 | *symp = sym; | |
6775 | ||
6776 | if (symsecp != NULL) | |
cb33740c | 6777 | *symsecp = bfd_section_from_elf_index (ibfd, sym->st_shndx); |
411e1bfb | 6778 | |
e7b938ca | 6779 | if (tls_maskp != NULL) |
411e1bfb AM |
6780 | { |
6781 | struct got_entry **lgot_ents; | |
f961d9dd | 6782 | unsigned char *tls_mask; |
411e1bfb | 6783 | |
e7b938ca | 6784 | tls_mask = NULL; |
411e1bfb AM |
6785 | lgot_ents = elf_local_got_ents (ibfd); |
6786 | if (lgot_ents != NULL) | |
6787 | { | |
e054468f AM |
6788 | struct plt_entry **local_plt = (struct plt_entry **) |
6789 | (lgot_ents + symtab_hdr->sh_info); | |
f961d9dd | 6790 | unsigned char *lgot_masks = (unsigned char *) |
e054468f | 6791 | (local_plt + symtab_hdr->sh_info); |
e7b938ca | 6792 | tls_mask = &lgot_masks[r_symndx]; |
411e1bfb | 6793 | } |
e7b938ca | 6794 | *tls_maskp = tls_mask; |
411e1bfb AM |
6795 | } |
6796 | } | |
6797 | return TRUE; | |
6798 | } | |
6799 | ||
e7b938ca | 6800 | /* Returns TLS_MASKP for the given REL symbol. Function return is 0 on |
951fd09b | 6801 | error, 2 on a toc GD type suitable for optimization, 3 on a toc LD |
ad8e1ba5 | 6802 | type suitable for optimization, and 1 otherwise. */ |
951fd09b AM |
6803 | |
6804 | static int | |
f961d9dd | 6805 | get_tls_mask (unsigned char **tls_maskp, |
3a71aa26 AM |
6806 | unsigned long *toc_symndx, |
6807 | bfd_vma *toc_addend, | |
0d4792f7 | 6808 | Elf_Internal_Sym **locsymsp, |
3a71aa26 AM |
6809 | const Elf_Internal_Rela *rel, |
6810 | bfd *ibfd) | |
411e1bfb AM |
6811 | { |
6812 | unsigned long r_symndx; | |
0d4792f7 | 6813 | int next_r; |
411e1bfb AM |
6814 | struct elf_link_hash_entry *h; |
6815 | Elf_Internal_Sym *sym; | |
6816 | asection *sec; | |
6817 | bfd_vma off; | |
6818 | ||
6819 | r_symndx = ELF64_R_SYM (rel->r_info); | |
e7b938ca | 6820 | if (!get_sym_h (&h, &sym, &sec, tls_maskp, locsymsp, r_symndx, ibfd)) |
951fd09b | 6821 | return 0; |
411e1bfb | 6822 | |
37da22e5 AM |
6823 | if ((*tls_maskp != NULL |
6824 | && (**tls_maskp & TLS_TLS) != 0 | |
6825 | && **tls_maskp != (TLS_TLS | TLS_MARK)) | |
411e1bfb | 6826 | || sec == NULL |
6bee8834 | 6827 | || ppc64_elf_section_data (sec) == NULL |
7c8fe5c4 | 6828 | || ppc64_elf_section_data (sec)->sec_type != sec_toc) |
951fd09b | 6829 | return 1; |
411e1bfb AM |
6830 | |
6831 | /* Look inside a TOC section too. */ | |
6832 | if (h != NULL) | |
6833 | { | |
6834 | BFD_ASSERT (h->root.type == bfd_link_hash_defined); | |
6835 | off = h->root.u.def.value; | |
6836 | } | |
6837 | else | |
6838 | off = sym->st_value; | |
6839 | off += rel->r_addend; | |
6840 | BFD_ASSERT (off % 8 == 0); | |
3a71aa26 AM |
6841 | r_symndx = ppc64_elf_section_data (sec)->u.toc.symndx[off / 8]; |
6842 | next_r = ppc64_elf_section_data (sec)->u.toc.symndx[off / 8 + 1]; | |
0d4792f7 AM |
6843 | if (toc_symndx != NULL) |
6844 | *toc_symndx = r_symndx; | |
3a71aa26 AM |
6845 | if (toc_addend != NULL) |
6846 | *toc_addend = ppc64_elf_section_data (sec)->u.toc.add[off / 8]; | |
6847 | if (!get_sym_h (&h, &sym, &sec, tls_maskp, locsymsp, r_symndx, ibfd)) | |
6848 | return 0; | |
854b41e7 | 6849 | if ((h == NULL || is_static_defined (h)) |
0d4792f7 AM |
6850 | && (next_r == -1 || next_r == -2)) |
6851 | return 1 - next_r; | |
951fd09b | 6852 | return 1; |
411e1bfb AM |
6853 | } |
6854 | ||
3b421ab3 AM |
6855 | /* Find (or create) an entry in the tocsave hash table. */ |
6856 | ||
6857 | static struct tocsave_entry * | |
6858 | tocsave_find (struct ppc_link_hash_table *htab, | |
6859 | enum insert_option insert, | |
6860 | Elf_Internal_Sym **local_syms, | |
6861 | const Elf_Internal_Rela *irela, | |
6862 | bfd *ibfd) | |
6863 | { | |
6864 | unsigned long r_indx; | |
6865 | struct elf_link_hash_entry *h; | |
6866 | Elf_Internal_Sym *sym; | |
6867 | struct tocsave_entry ent, *p; | |
6868 | hashval_t hash; | |
6869 | struct tocsave_entry **slot; | |
6870 | ||
6871 | r_indx = ELF64_R_SYM (irela->r_info); | |
6872 | if (!get_sym_h (&h, &sym, &ent.sec, NULL, local_syms, r_indx, ibfd)) | |
6873 | return NULL; | |
6874 | if (ent.sec == NULL || ent.sec->output_section == NULL) | |
6875 | { | |
4eca0228 | 6876 | _bfd_error_handler |
871b3ab2 | 6877 | (_("%pB: undefined symbol on R_PPC64_TOCSAVE relocation"), ibfd); |
3b421ab3 AM |
6878 | return NULL; |
6879 | } | |
6880 | ||
6881 | if (h != NULL) | |
6882 | ent.offset = h->root.u.def.value; | |
6883 | else | |
6884 | ent.offset = sym->st_value; | |
6885 | ent.offset += irela->r_addend; | |
6886 | ||
6887 | hash = tocsave_htab_hash (&ent); | |
6888 | slot = ((struct tocsave_entry **) | |
6889 | htab_find_slot_with_hash (htab->tocsave_htab, &ent, hash, insert)); | |
6890 | if (slot == NULL) | |
6891 | return NULL; | |
6892 | ||
6893 | if (*slot == NULL) | |
6894 | { | |
6895 | p = (struct tocsave_entry *) bfd_alloc (ibfd, sizeof (*p)); | |
6896 | if (p == NULL) | |
6897 | return NULL; | |
6898 | *p = ent; | |
6899 | *slot = p; | |
6900 | } | |
6901 | return *slot; | |
6902 | } | |
6903 | ||
754021d0 | 6904 | /* Adjust all global syms defined in opd sections. In gcc generated |
8387904d | 6905 | code for the old ABI, these will already have been done. */ |
754021d0 AM |
6906 | |
6907 | static bfd_boolean | |
6908 | adjust_opd_syms (struct elf_link_hash_entry *h, void *inf ATTRIBUTE_UNUSED) | |
6909 | { | |
6910 | struct ppc_link_hash_entry *eh; | |
6911 | asection *sym_sec; | |
74f0fb50 | 6912 | struct _opd_sec_data *opd; |
754021d0 AM |
6913 | |
6914 | if (h->root.type == bfd_link_hash_indirect) | |
6915 | return TRUE; | |
6916 | ||
754021d0 AM |
6917 | if (h->root.type != bfd_link_hash_defined |
6918 | && h->root.type != bfd_link_hash_defweak) | |
6919 | return TRUE; | |
6920 | ||
ed7007c1 | 6921 | eh = ppc_elf_hash_entry (h); |
754021d0 AM |
6922 | if (eh->adjust_done) |
6923 | return TRUE; | |
6924 | ||
6925 | sym_sec = eh->elf.root.u.def.section; | |
74f0fb50 AM |
6926 | opd = get_opd_info (sym_sec); |
6927 | if (opd != NULL && opd->adjust != NULL) | |
754021d0 | 6928 | { |
51aecdc5 | 6929 | long adjust = opd->adjust[OPD_NDX (eh->elf.root.u.def.value)]; |
4025353c AM |
6930 | if (adjust == -1) |
6931 | { | |
6932 | /* This entry has been deleted. */ | |
b3fac117 | 6933 | asection *dsec = ppc64_elf_tdata (sym_sec->owner)->deleted_section; |
81688140 AM |
6934 | if (dsec == NULL) |
6935 | { | |
6936 | for (dsec = sym_sec->owner->sections; dsec; dsec = dsec->next) | |
dbaa2011 | 6937 | if (discarded_section (dsec)) |
81688140 | 6938 | { |
b3fac117 | 6939 | ppc64_elf_tdata (sym_sec->owner)->deleted_section = dsec; |
81688140 AM |
6940 | break; |
6941 | } | |
6942 | } | |
4025353c | 6943 | eh->elf.root.u.def.value = 0; |
81688140 | 6944 | eh->elf.root.u.def.section = dsec; |
4025353c AM |
6945 | } |
6946 | else | |
6947 | eh->elf.root.u.def.value += adjust; | |
754021d0 AM |
6948 | eh->adjust_done = 1; |
6949 | } | |
6950 | return TRUE; | |
6951 | } | |
6952 | ||
8c1d1bb8 | 6953 | /* Handles decrementing dynamic reloc counts for the reloc specified by |
19e08130 | 6954 | R_INFO in section SEC. If LOCAL_SYMS is NULL, then H and SYM |
8c1d1bb8 AM |
6955 | have already been determined. */ |
6956 | ||
6957 | static bfd_boolean | |
6958 | dec_dynrel_count (bfd_vma r_info, | |
6959 | asection *sec, | |
6960 | struct bfd_link_info *info, | |
6961 | Elf_Internal_Sym **local_syms, | |
6962 | struct elf_link_hash_entry *h, | |
19e08130 | 6963 | Elf_Internal_Sym *sym) |
8c1d1bb8 AM |
6964 | { |
6965 | enum elf_ppc64_reloc_type r_type; | |
19e08130 | 6966 | asection *sym_sec = NULL; |
8c1d1bb8 AM |
6967 | |
6968 | /* Can this reloc be dynamic? This switch, and later tests here | |
6969 | should be kept in sync with the code in check_relocs. */ | |
6970 | r_type = ELF64_R_TYPE (r_info); | |
6971 | switch (r_type) | |
6972 | { | |
6973 | default: | |
6974 | return TRUE; | |
6975 | ||
1bdd8fac AM |
6976 | case R_PPC64_TOC16: |
6977 | case R_PPC64_TOC16_DS: | |
6978 | case R_PPC64_TOC16_LO: | |
6979 | case R_PPC64_TOC16_HI: | |
6980 | case R_PPC64_TOC16_HA: | |
6981 | case R_PPC64_TOC16_LO_DS: | |
6982 | if (h == NULL) | |
6983 | return TRUE; | |
6984 | break; | |
6985 | ||
8c1d1bb8 AM |
6986 | case R_PPC64_TPREL16: |
6987 | case R_PPC64_TPREL16_LO: | |
6988 | case R_PPC64_TPREL16_HI: | |
6989 | case R_PPC64_TPREL16_HA: | |
6990 | case R_PPC64_TPREL16_DS: | |
6991 | case R_PPC64_TPREL16_LO_DS: | |
f9c6b907 AM |
6992 | case R_PPC64_TPREL16_HIGH: |
6993 | case R_PPC64_TPREL16_HIGHA: | |
8c1d1bb8 AM |
6994 | case R_PPC64_TPREL16_HIGHER: |
6995 | case R_PPC64_TPREL16_HIGHERA: | |
6996 | case R_PPC64_TPREL16_HIGHEST: | |
6997 | case R_PPC64_TPREL16_HIGHESTA: | |
8c1d1bb8 | 6998 | case R_PPC64_TPREL64: |
c213164a | 6999 | case R_PPC64_TPREL34: |
8c1d1bb8 AM |
7000 | case R_PPC64_DTPMOD64: |
7001 | case R_PPC64_DTPREL64: | |
7002 | case R_PPC64_ADDR64: | |
7003 | case R_PPC64_REL30: | |
7004 | case R_PPC64_REL32: | |
7005 | case R_PPC64_REL64: | |
7006 | case R_PPC64_ADDR14: | |
7007 | case R_PPC64_ADDR14_BRNTAKEN: | |
7008 | case R_PPC64_ADDR14_BRTAKEN: | |
7009 | case R_PPC64_ADDR16: | |
7010 | case R_PPC64_ADDR16_DS: | |
7011 | case R_PPC64_ADDR16_HA: | |
7012 | case R_PPC64_ADDR16_HI: | |
f9c6b907 AM |
7013 | case R_PPC64_ADDR16_HIGH: |
7014 | case R_PPC64_ADDR16_HIGHA: | |
8c1d1bb8 AM |
7015 | case R_PPC64_ADDR16_HIGHER: |
7016 | case R_PPC64_ADDR16_HIGHERA: | |
7017 | case R_PPC64_ADDR16_HIGHEST: | |
7018 | case R_PPC64_ADDR16_HIGHESTA: | |
7019 | case R_PPC64_ADDR16_LO: | |
7020 | case R_PPC64_ADDR16_LO_DS: | |
7021 | case R_PPC64_ADDR24: | |
7022 | case R_PPC64_ADDR32: | |
7023 | case R_PPC64_UADDR16: | |
7024 | case R_PPC64_UADDR32: | |
7025 | case R_PPC64_UADDR64: | |
7026 | case R_PPC64_TOC: | |
5663e321 AM |
7027 | case R_PPC64_D34: |
7028 | case R_PPC64_D34_LO: | |
7029 | case R_PPC64_D34_HI30: | |
7030 | case R_PPC64_D34_HA30: | |
7031 | case R_PPC64_ADDR16_HIGHER34: | |
7032 | case R_PPC64_ADDR16_HIGHERA34: | |
7033 | case R_PPC64_ADDR16_HIGHEST34: | |
7034 | case R_PPC64_ADDR16_HIGHESTA34: | |
7035 | case R_PPC64_D28: | |
8c1d1bb8 AM |
7036 | break; |
7037 | } | |
7038 | ||
7039 | if (local_syms != NULL) | |
7040 | { | |
7041 | unsigned long r_symndx; | |
8c1d1bb8 AM |
7042 | bfd *ibfd = sec->owner; |
7043 | ||
7044 | r_symndx = ELF64_R_SYM (r_info); | |
7045 | if (!get_sym_h (&h, &sym, &sym_sec, NULL, local_syms, r_symndx, ibfd)) | |
7046 | return FALSE; | |
7047 | } | |
7048 | ||
ec73ddcd AM |
7049 | if ((h != NULL |
7050 | && (h->root.type == bfd_link_hash_defweak | |
7051 | || !h->def_regular)) | |
7052 | || (h != NULL | |
7053 | && !bfd_link_executable (info) | |
7054 | && !SYMBOLIC_BIND (info, h)) | |
7055 | || (bfd_link_pic (info) | |
7056 | && must_be_dyn_reloc (info, r_type)) | |
7057 | || (!bfd_link_pic (info) | |
7058 | && (h != NULL | |
7059 | ? h->type == STT_GNU_IFUNC | |
7060 | : ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC))) | |
8c1d1bb8 AM |
7061 | ; |
7062 | else | |
7063 | return TRUE; | |
7064 | ||
7065 | if (h != NULL) | |
6edfbbad | 7066 | { |
19e08130 AM |
7067 | struct elf_dyn_relocs *p; |
7068 | struct elf_dyn_relocs **pp; | |
190eb1dd | 7069 | pp = &h->dyn_relocs; |
19e08130 AM |
7070 | |
7071 | /* elf_gc_sweep may have already removed all dyn relocs associated | |
7072 | with local syms for a given section. Also, symbol flags are | |
7073 | changed by elf_gc_sweep_symbol, confusing the test above. Don't | |
7074 | report a dynreloc miscount. */ | |
7075 | if (*pp == NULL && info->gc_sections) | |
7076 | return TRUE; | |
7077 | ||
7078 | while ((p = *pp) != NULL) | |
60124e18 | 7079 | { |
19e08130 AM |
7080 | if (p->sec == sec) |
7081 | { | |
7082 | if (!must_be_dyn_reloc (info, r_type)) | |
7083 | p->pc_count -= 1; | |
7084 | p->count -= 1; | |
7085 | if (p->count == 0) | |
7086 | *pp = p->next; | |
7087 | return TRUE; | |
7088 | } | |
7089 | pp = &p->next; | |
60124e18 | 7090 | } |
6edfbbad | 7091 | } |
19e08130 AM |
7092 | else |
7093 | { | |
7094 | struct ppc_dyn_relocs *p; | |
7095 | struct ppc_dyn_relocs **pp; | |
7096 | void *vpp; | |
7097 | bfd_boolean is_ifunc; | |
8c1d1bb8 | 7098 | |
19e08130 AM |
7099 | if (local_syms == NULL) |
7100 | sym_sec = bfd_section_from_elf_index (sec->owner, sym->st_shndx); | |
7101 | if (sym_sec == NULL) | |
7102 | sym_sec = sec; | |
c57da1a7 | 7103 | |
19e08130 AM |
7104 | vpp = &elf_section_data (sym_sec)->local_dynrel; |
7105 | pp = (struct ppc_dyn_relocs **) vpp; | |
7106 | ||
7107 | if (*pp == NULL && info->gc_sections) | |
7108 | return TRUE; | |
7109 | ||
7110 | is_ifunc = ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC; | |
7111 | while ((p = *pp) != NULL) | |
8c1d1bb8 | 7112 | { |
19e08130 AM |
7113 | if (p->sec == sec && p->ifunc == is_ifunc) |
7114 | { | |
7115 | p->count -= 1; | |
7116 | if (p->count == 0) | |
7117 | *pp = p->next; | |
7118 | return TRUE; | |
7119 | } | |
7120 | pp = &p->next; | |
8c1d1bb8 | 7121 | } |
8c1d1bb8 AM |
7122 | } |
7123 | ||
695344c0 | 7124 | /* xgettext:c-format */ |
cf97bcb0 AM |
7125 | _bfd_error_handler (_("dynreloc miscount for %pB, section %pA"), |
7126 | sec->owner, sec); | |
8c1d1bb8 AM |
7127 | bfd_set_error (bfd_error_bad_value); |
7128 | return FALSE; | |
7129 | } | |
7130 | ||
754021d0 AM |
7131 | /* Remove unused Official Procedure Descriptor entries. Currently we |
7132 | only remove those associated with functions in discarded link-once | |
7133 | sections, or weakly defined functions that have been overridden. It | |
7134 | would be possible to remove many more entries for statically linked | |
7135 | applications. */ | |
7136 | ||
b34976b6 | 7137 | bfd_boolean |
e7d1c40c | 7138 | ppc64_elf_edit_opd (struct bfd_link_info *info) |
1e2f5b6e AM |
7139 | { |
7140 | bfd *ibfd; | |
754021d0 | 7141 | bfd_boolean some_edited = FALSE; |
3f764659 | 7142 | asection *need_pad = NULL; |
e7d1c40c AM |
7143 | struct ppc_link_hash_table *htab; |
7144 | ||
7145 | htab = ppc_hash_table (info); | |
7146 | if (htab == NULL) | |
7147 | return FALSE; | |
1e2f5b6e | 7148 | |
c72f2fb2 | 7149 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next) |
1e2f5b6e AM |
7150 | { |
7151 | asection *sec; | |
7152 | Elf_Internal_Rela *relstart, *rel, *relend; | |
7153 | Elf_Internal_Shdr *symtab_hdr; | |
6cdc0ccc | 7154 | Elf_Internal_Sym *local_syms; |
74f0fb50 | 7155 | struct _opd_sec_data *opd; |
51aecdc5 | 7156 | bfd_boolean need_edit, add_aux_fields, broken; |
3f764659 | 7157 | bfd_size_type cnt_16b = 0; |
1e2f5b6e | 7158 | |
854b41e7 AM |
7159 | if (!is_ppc64_elf (ibfd)) |
7160 | continue; | |
7161 | ||
1e2f5b6e | 7162 | sec = bfd_get_section_by_name (ibfd, ".opd"); |
46de2a7c | 7163 | if (sec == NULL || sec->size == 0) |
1e2f5b6e AM |
7164 | continue; |
7165 | ||
dbaa2011 | 7166 | if (sec->sec_info_type == SEC_INFO_TYPE_JUST_SYMS) |
4b85d634 AM |
7167 | continue; |
7168 | ||
1e2f5b6e AM |
7169 | if (sec->output_section == bfd_abs_section_ptr) |
7170 | continue; | |
7171 | ||
7172 | /* Look through the section relocs. */ | |
7173 | if ((sec->flags & SEC_RELOC) == 0 || sec->reloc_count == 0) | |
7174 | continue; | |
7175 | ||
6cdc0ccc | 7176 | local_syms = NULL; |
0ffa91dd | 7177 | symtab_hdr = &elf_symtab_hdr (ibfd); |
1e2f5b6e AM |
7178 | |
7179 | /* Read the relocations. */ | |
4ce794b7 | 7180 | relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL, |
45d6a902 | 7181 | info->keep_memory); |
1e2f5b6e | 7182 | if (relstart == NULL) |
b34976b6 | 7183 | return FALSE; |
1e2f5b6e AM |
7184 | |
7185 | /* First run through the relocs to check they are sane, and to | |
7186 | determine whether we need to edit this opd section. */ | |
b34976b6 | 7187 | need_edit = FALSE; |
51aecdc5 | 7188 | broken = FALSE; |
3f764659 | 7189 | need_pad = sec; |
1e2f5b6e | 7190 | relend = relstart + sec->reloc_count; |
50bc7936 | 7191 | for (rel = relstart; rel < relend; ) |
1e2f5b6e | 7192 | { |
04c9666a | 7193 | enum elf_ppc64_reloc_type r_type; |
1e2f5b6e AM |
7194 | unsigned long r_symndx; |
7195 | asection *sym_sec; | |
7196 | struct elf_link_hash_entry *h; | |
7197 | Elf_Internal_Sym *sym; | |
51aecdc5 | 7198 | bfd_vma offset; |
1e2f5b6e | 7199 | |
51aecdc5 | 7200 | /* .opd contains an array of 16 or 24 byte entries. We're |
1e2f5b6e AM |
7201 | only interested in the reloc pointing to a function entry |
7202 | point. */ | |
51aecdc5 AM |
7203 | offset = rel->r_offset; |
7204 | if (rel + 1 == relend | |
7205 | || rel[1].r_offset != offset + 8) | |
1e2f5b6e AM |
7206 | { |
7207 | /* If someone messes with .opd alignment then after a | |
7208 | "ld -r" we might have padding in the middle of .opd. | |
7209 | Also, there's nothing to prevent someone putting | |
7210 | something silly in .opd with the assembler. No .opd | |
b34976b6 | 7211 | optimization for them! */ |
3f764659 | 7212 | broken_opd: |
4eca0228 | 7213 | _bfd_error_handler |
871b3ab2 | 7214 | (_("%pB: .opd is not a regular array of opd entries"), ibfd); |
51aecdc5 | 7215 | broken = TRUE; |
1e2f5b6e AM |
7216 | break; |
7217 | } | |
7218 | ||
50bc7936 AM |
7219 | if ((r_type = ELF64_R_TYPE (rel->r_info)) != R_PPC64_ADDR64 |
7220 | || (r_type = ELF64_R_TYPE ((rel + 1)->r_info)) != R_PPC64_TOC) | |
7221 | { | |
4eca0228 | 7222 | _bfd_error_handler |
695344c0 | 7223 | /* xgettext:c-format */ |
871b3ab2 | 7224 | (_("%pB: unexpected reloc type %u in .opd section"), |
d003868e | 7225 | ibfd, r_type); |
51aecdc5 | 7226 | broken = TRUE; |
50bc7936 AM |
7227 | break; |
7228 | } | |
7229 | ||
1e2f5b6e | 7230 | r_symndx = ELF64_R_SYM (rel->r_info); |
411e1bfb AM |
7231 | if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, |
7232 | r_symndx, ibfd)) | |
50bc7936 | 7233 | goto error_ret; |
1e2f5b6e AM |
7234 | |
7235 | if (sym_sec == NULL || sym_sec->owner == NULL) | |
7236 | { | |
411e1bfb AM |
7237 | const char *sym_name; |
7238 | if (h != NULL) | |
7239 | sym_name = h->root.root.string; | |
7240 | else | |
26c61ae5 L |
7241 | sym_name = bfd_elf_sym_name (ibfd, symtab_hdr, sym, |
7242 | sym_sec); | |
411e1bfb | 7243 | |
4eca0228 | 7244 | _bfd_error_handler |
695344c0 | 7245 | /* xgettext:c-format */ |
871b3ab2 | 7246 | (_("%pB: undefined sym `%s' in .opd section"), |
d003868e | 7247 | ibfd, sym_name); |
51aecdc5 | 7248 | broken = TRUE; |
1e2f5b6e AM |
7249 | break; |
7250 | } | |
7251 | ||
51020317 AM |
7252 | /* opd entries are always for functions defined in the |
7253 | current input bfd. If the symbol isn't defined in the | |
7254 | input bfd, then we won't be using the function in this | |
7255 | bfd; It must be defined in a linkonce section in another | |
7256 | bfd, or is weak. It's also possible that we are | |
7257 | discarding the function due to a linker script /DISCARD/, | |
7258 | which we test for via the output_section. */ | |
7259 | if (sym_sec->owner != ibfd | |
7260 | || sym_sec->output_section == bfd_abs_section_ptr) | |
b34976b6 | 7261 | need_edit = TRUE; |
1e2f5b6e | 7262 | |
50bc7936 | 7263 | rel += 2; |
51aecdc5 AM |
7264 | if (rel + 1 == relend |
7265 | || (rel + 2 < relend | |
7266 | && ELF64_R_TYPE (rel[2].r_info) == R_PPC64_TOC)) | |
7267 | ++rel; | |
7268 | ||
7269 | if (rel == relend) | |
3f764659 JJ |
7270 | { |
7271 | if (sec->size == offset + 24) | |
7272 | { | |
7273 | need_pad = NULL; | |
7274 | break; | |
7275 | } | |
51aecdc5 | 7276 | if (sec->size == offset + 16) |
3f764659 JJ |
7277 | { |
7278 | cnt_16b++; | |
7279 | break; | |
7280 | } | |
7281 | goto broken_opd; | |
7282 | } | |
3f764659 JJ |
7283 | else if (rel + 1 < relend |
7284 | && ELF64_R_TYPE (rel[0].r_info) == R_PPC64_ADDR64 | |
7285 | && ELF64_R_TYPE (rel[1].r_info) == R_PPC64_TOC) | |
7286 | { | |
51aecdc5 AM |
7287 | if (rel[0].r_offset == offset + 16) |
7288 | cnt_16b++; | |
7289 | else if (rel[0].r_offset != offset + 24) | |
7290 | goto broken_opd; | |
3f764659 JJ |
7291 | } |
7292 | else | |
7293 | goto broken_opd; | |
1e2f5b6e AM |
7294 | } |
7295 | ||
e7d1c40c | 7296 | add_aux_fields = htab->params->non_overlapping_opd && cnt_16b > 0; |
3f764659 | 7297 | |
51aecdc5 | 7298 | if (!broken && (need_edit || add_aux_fields)) |
1e2f5b6e AM |
7299 | { |
7300 | Elf_Internal_Rela *write_rel; | |
d4730f92 | 7301 | Elf_Internal_Shdr *rel_hdr; |
1e2f5b6e | 7302 | bfd_byte *rptr, *wptr; |
983bddc8 | 7303 | bfd_byte *new_contents; |
74f0fb50 AM |
7304 | bfd_size_type amt; |
7305 | ||
983bddc8 | 7306 | new_contents = NULL; |
51aecdc5 | 7307 | amt = OPD_NDX (sec->size) * sizeof (long); |
74f0fb50 | 7308 | opd = &ppc64_elf_section_data (sec)->u.opd; |
33c0ec9d | 7309 | opd->adjust = bfd_zalloc (sec->owner, amt); |
74f0fb50 AM |
7310 | if (opd->adjust == NULL) |
7311 | return FALSE; | |
1e2f5b6e AM |
7312 | |
7313 | /* This seems a waste of time as input .opd sections are all | |
7314 | zeros as generated by gcc, but I suppose there's no reason | |
7315 | this will always be so. We might start putting something in | |
7316 | the third word of .opd entries. */ | |
7317 | if ((sec->flags & SEC_IN_MEMORY) == 0) | |
7318 | { | |
eea6121a AM |
7319 | bfd_byte *loc; |
7320 | if (!bfd_malloc_and_get_section (ibfd, sec, &loc)) | |
6cdc0ccc | 7321 | { |
c9594989 | 7322 | free (loc); |
50bc7936 | 7323 | error_ret: |
c9594989 | 7324 | if (symtab_hdr->contents != (unsigned char *) local_syms) |
6cdc0ccc | 7325 | free (local_syms); |
6cdc0ccc AM |
7326 | if (elf_section_data (sec)->relocs != relstart) |
7327 | free (relstart); | |
b34976b6 | 7328 | return FALSE; |
6cdc0ccc | 7329 | } |
1e2f5b6e AM |
7330 | sec->contents = loc; |
7331 | sec->flags |= (SEC_IN_MEMORY | SEC_HAS_CONTENTS); | |
7332 | } | |
7333 | ||
7334 | elf_section_data (sec)->relocs = relstart; | |
7335 | ||
3f764659 | 7336 | new_contents = sec->contents; |
3f764659 JJ |
7337 | if (add_aux_fields) |
7338 | { | |
7339 | new_contents = bfd_malloc (sec->size + cnt_16b * 8); | |
7340 | if (new_contents == NULL) | |
7341 | return FALSE; | |
51aecdc5 | 7342 | need_pad = NULL; |
3f764659 | 7343 | } |
b4f4e59f AM |
7344 | wptr = new_contents; |
7345 | rptr = sec->contents; | |
1e2f5b6e | 7346 | write_rel = relstart; |
51aecdc5 | 7347 | for (rel = relstart; rel < relend; ) |
1e2f5b6e | 7348 | { |
50bc7936 AM |
7349 | unsigned long r_symndx; |
7350 | asection *sym_sec; | |
7351 | struct elf_link_hash_entry *h; | |
51aecdc5 | 7352 | struct ppc_link_hash_entry *fdh = NULL; |
50bc7936 | 7353 | Elf_Internal_Sym *sym; |
51aecdc5 AM |
7354 | long opd_ent_size; |
7355 | Elf_Internal_Rela *next_rel; | |
7356 | bfd_boolean skip; | |
50bc7936 AM |
7357 | |
7358 | r_symndx = ELF64_R_SYM (rel->r_info); | |
7359 | if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, | |
d37c89e5 | 7360 | r_symndx, ibfd)) |
50bc7936 AM |
7361 | goto error_ret; |
7362 | ||
51aecdc5 AM |
7363 | next_rel = rel + 2; |
7364 | if (next_rel + 1 == relend | |
7365 | || (next_rel + 2 < relend | |
7366 | && ELF64_R_TYPE (next_rel[2].r_info) == R_PPC64_TOC)) | |
7367 | ++next_rel; | |
7368 | ||
7369 | /* See if the .opd entry is full 24 byte or | |
7370 | 16 byte (with fd_aux entry overlapped with next | |
7371 | fd_func). */ | |
7372 | opd_ent_size = 24; | |
7373 | if (next_rel == relend) | |
1e2f5b6e | 7374 | { |
51aecdc5 | 7375 | if (sec->size == rel->r_offset + 16) |
3f764659 | 7376 | opd_ent_size = 16; |
51aecdc5 AM |
7377 | } |
7378 | else if (next_rel->r_offset == rel->r_offset + 16) | |
7379 | opd_ent_size = 16; | |
3f764659 | 7380 | |
51aecdc5 AM |
7381 | if (h != NULL |
7382 | && h->root.root.string[0] == '.') | |
7383 | { | |
ed7007c1 | 7384 | fdh = ppc_elf_hash_entry (h)->oh; |
8c5b4e52 AM |
7385 | if (fdh != NULL) |
7386 | { | |
7387 | fdh = ppc_follow_link (fdh); | |
7388 | if (fdh->elf.root.type != bfd_link_hash_defined | |
7389 | && fdh->elf.root.type != bfd_link_hash_defweak) | |
7390 | fdh = NULL; | |
7391 | } | |
51aecdc5 | 7392 | } |
1e2f5b6e | 7393 | |
51aecdc5 AM |
7394 | skip = (sym_sec->owner != ibfd |
7395 | || sym_sec->output_section == bfd_abs_section_ptr); | |
7396 | if (skip) | |
7397 | { | |
7398 | if (fdh != NULL && sym_sec->owner == ibfd) | |
a4aa0fb7 | 7399 | { |
51aecdc5 AM |
7400 | /* Arrange for the function descriptor sym |
7401 | to be dropped. */ | |
7402 | fdh->elf.root.u.def.value = 0; | |
7403 | fdh->elf.root.u.def.section = sym_sec; | |
a4aa0fb7 | 7404 | } |
51aecdc5 | 7405 | opd->adjust[OPD_NDX (rel->r_offset)] = -1; |
1e2f5b6e | 7406 | |
0e1862bb | 7407 | if (NO_OPD_RELOCS || bfd_link_relocatable (info)) |
51aecdc5 AM |
7408 | rel = next_rel; |
7409 | else | |
7410 | while (1) | |
7411 | { | |
7412 | if (!dec_dynrel_count (rel->r_info, sec, info, | |
7413 | NULL, h, sym)) | |
7414 | goto error_ret; | |
754021d0 | 7415 | |
51aecdc5 AM |
7416 | if (++rel == next_rel) |
7417 | break; | |
1e2f5b6e | 7418 | |
51aecdc5 AM |
7419 | r_symndx = ELF64_R_SYM (rel->r_info); |
7420 | if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, | |
7421 | r_symndx, ibfd)) | |
7422 | goto error_ret; | |
7423 | } | |
50bc7936 AM |
7424 | } |
7425 | else | |
1e2f5b6e | 7426 | { |
51aecdc5 AM |
7427 | /* We'll be keeping this opd entry. */ |
7428 | long adjust; | |
7429 | ||
7430 | if (fdh != NULL) | |
7431 | { | |
7432 | /* Redefine the function descriptor symbol to | |
7433 | this location in the opd section. It is | |
7434 | necessary to update the value here rather | |
7435 | than using an array of adjustments as we do | |
7436 | for local symbols, because various places | |
7437 | in the generic ELF code use the value | |
7438 | stored in u.def.value. */ | |
7439 | fdh->elf.root.u.def.value = wptr - new_contents; | |
7440 | fdh->adjust_done = 1; | |
7441 | } | |
7442 | ||
7443 | /* Local syms are a bit tricky. We could | |
7444 | tweak them as they can be cached, but | |
7445 | we'd need to look through the local syms | |
7446 | for the function descriptor sym which we | |
7447 | don't have at the moment. So keep an | |
7448 | array of adjustments. */ | |
7449 | adjust = (wptr - new_contents) - (rptr - sec->contents); | |
7450 | opd->adjust[OPD_NDX (rel->r_offset)] = adjust; | |
7451 | ||
7452 | if (wptr != rptr) | |
7453 | memcpy (wptr, rptr, opd_ent_size); | |
7454 | wptr += opd_ent_size; | |
7455 | if (add_aux_fields && opd_ent_size == 16) | |
7456 | { | |
7457 | memset (wptr, '\0', 8); | |
7458 | wptr += 8; | |
7459 | } | |
7460 | ||
50bc7936 | 7461 | /* We need to adjust any reloc offsets to point to the |
51aecdc5 AM |
7462 | new opd entries. */ |
7463 | for ( ; rel != next_rel; ++rel) | |
7464 | { | |
7465 | rel->r_offset += adjust; | |
7466 | if (write_rel != rel) | |
7467 | memcpy (write_rel, rel, sizeof (*rel)); | |
7468 | ++write_rel; | |
7469 | } | |
1e2f5b6e | 7470 | } |
51aecdc5 AM |
7471 | |
7472 | rptr += opd_ent_size; | |
1e2f5b6e AM |
7473 | } |
7474 | ||
3f764659 | 7475 | sec->size = wptr - new_contents; |
1e2f5b6e | 7476 | sec->reloc_count = write_rel - relstart; |
3f764659 JJ |
7477 | if (add_aux_fields) |
7478 | { | |
7479 | free (sec->contents); | |
7480 | sec->contents = new_contents; | |
7481 | } | |
7482 | ||
05bf9422 | 7483 | /* Fudge the header size too, as this is used later in |
cdcf6e38 | 7484 | elf_bfd_final_link if we are emitting relocs. */ |
d4730f92 BS |
7485 | rel_hdr = _bfd_elf_single_rel_hdr (sec); |
7486 | rel_hdr->sh_size = sec->reloc_count * rel_hdr->sh_entsize; | |
754021d0 | 7487 | some_edited = TRUE; |
1e2f5b6e | 7488 | } |
6cdc0ccc | 7489 | else if (elf_section_data (sec)->relocs != relstart) |
1e2f5b6e | 7490 | free (relstart); |
6cdc0ccc | 7491 | |
411e1bfb AM |
7492 | if (local_syms != NULL |
7493 | && symtab_hdr->contents != (unsigned char *) local_syms) | |
7494 | { | |
7495 | if (!info->keep_memory) | |
7496 | free (local_syms); | |
7497 | else | |
7498 | symtab_hdr->contents = (unsigned char *) local_syms; | |
7499 | } | |
7500 | } | |
7501 | ||
754021d0 AM |
7502 | if (some_edited) |
7503 | elf_link_hash_traverse (elf_hash_table (info), adjust_opd_syms, NULL); | |
7504 | ||
3f764659 JJ |
7505 | /* If we are doing a final link and the last .opd entry is just 16 byte |
7506 | long, add a 8 byte padding after it. */ | |
0e1862bb | 7507 | if (need_pad != NULL && !bfd_link_relocatable (info)) |
3f764659 JJ |
7508 | { |
7509 | bfd_byte *p; | |
7510 | ||
7511 | if ((need_pad->flags & SEC_IN_MEMORY) == 0) | |
7512 | { | |
7513 | BFD_ASSERT (need_pad->size > 0); | |
7514 | ||
7515 | p = bfd_malloc (need_pad->size + 8); | |
7516 | if (p == NULL) | |
7517 | return FALSE; | |
699733f6 | 7518 | |
2cdcc330 AM |
7519 | if (!bfd_get_section_contents (need_pad->owner, need_pad, |
7520 | p, 0, need_pad->size)) | |
3f764659 JJ |
7521 | return FALSE; |
7522 | ||
7523 | need_pad->contents = p; | |
7524 | need_pad->flags |= (SEC_IN_MEMORY | SEC_HAS_CONTENTS); | |
7525 | } | |
7526 | else | |
7527 | { | |
7528 | p = bfd_realloc (need_pad->contents, need_pad->size + 8); | |
7529 | if (p == NULL) | |
7530 | return FALSE; | |
7531 | ||
7532 | need_pad->contents = p; | |
7533 | } | |
7534 | ||
7535 | memset (need_pad->contents + need_pad->size, 0, 8); | |
7536 | need_pad->size += 8; | |
7537 | } | |
7538 | ||
411e1bfb AM |
7539 | return TRUE; |
7540 | } | |
7541 | ||
3e04d765 AM |
7542 | /* Analyze inline PLT call relocations to see whether calls to locally |
7543 | defined functions can be converted to direct calls. */ | |
7544 | ||
7545 | bfd_boolean | |
7546 | ppc64_elf_inline_plt (struct bfd_link_info *info) | |
7547 | { | |
7548 | struct ppc_link_hash_table *htab; | |
7549 | bfd *ibfd; | |
7550 | asection *sec; | |
7551 | bfd_vma low_vma, high_vma, limit; | |
7552 | ||
7553 | htab = ppc_hash_table (info); | |
7554 | if (htab == NULL) | |
7555 | return FALSE; | |
7556 | ||
7557 | /* A bl insn can reach -0x2000000 to 0x1fffffc. The limit is | |
7558 | reduced somewhat to cater for possible stubs that might be added | |
7559 | between the call and its destination. */ | |
7560 | if (htab->params->group_size < 0) | |
7561 | { | |
7562 | limit = -htab->params->group_size; | |
7563 | if (limit == 1) | |
7564 | limit = 0x1e00000; | |
7565 | } | |
7566 | else | |
7567 | { | |
7568 | limit = htab->params->group_size; | |
7569 | if (limit == 1) | |
7570 | limit = 0x1c00000; | |
7571 | } | |
7572 | ||
7573 | low_vma = -1; | |
7574 | high_vma = 0; | |
7575 | for (sec = info->output_bfd->sections; sec != NULL; sec = sec->next) | |
7576 | if ((sec->flags & (SEC_ALLOC | SEC_CODE)) == (SEC_ALLOC | SEC_CODE)) | |
7577 | { | |
7578 | if (low_vma > sec->vma) | |
7579 | low_vma = sec->vma; | |
7580 | if (high_vma < sec->vma + sec->size) | |
7581 | high_vma = sec->vma + sec->size; | |
7582 | } | |
7583 | ||
7584 | /* If a "bl" can reach anywhere in local code sections, then we can | |
7585 | convert all inline PLT sequences to direct calls when the symbol | |
7586 | is local. */ | |
7587 | if (high_vma - low_vma < limit) | |
7588 | { | |
7589 | htab->can_convert_all_inline_plt = 1; | |
7590 | return TRUE; | |
7591 | } | |
7592 | ||
7593 | /* Otherwise, go looking through relocs for cases where a direct | |
7594 | call won't reach. Mark the symbol on any such reloc to disable | |
7595 | the optimization and keep the PLT entry as it seems likely that | |
7596 | this will be better than creating trampolines. Note that this | |
7597 | will disable the optimization for all inline PLT calls to a | |
7598 | particular symbol, not just those that won't reach. The | |
7599 | difficulty in doing a more precise optimization is that the | |
7600 | linker needs to make a decision depending on whether a | |
7601 | particular R_PPC64_PLTCALL insn can be turned into a direct | |
7602 | call, for each of the R_PPC64_PLTSEQ and R_PPC64_PLT16* insns in | |
7603 | the sequence, and there is nothing that ties those relocs | |
7604 | together except their symbol. */ | |
7605 | ||
7606 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next) | |
7607 | { | |
7608 | Elf_Internal_Shdr *symtab_hdr; | |
7609 | Elf_Internal_Sym *local_syms; | |
7610 | ||
7611 | if (!is_ppc64_elf (ibfd)) | |
7612 | continue; | |
7613 | ||
7614 | local_syms = NULL; | |
7615 | symtab_hdr = &elf_symtab_hdr (ibfd); | |
7616 | ||
7617 | for (sec = ibfd->sections; sec != NULL; sec = sec->next) | |
7618 | if (ppc64_elf_section_data (sec)->has_pltcall | |
7619 | && !bfd_is_abs_section (sec->output_section)) | |
7620 | { | |
7621 | Elf_Internal_Rela *relstart, *rel, *relend; | |
7622 | ||
7623 | /* Read the relocations. */ | |
7624 | relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL, | |
7625 | info->keep_memory); | |
7626 | if (relstart == NULL) | |
7627 | return FALSE; | |
7628 | ||
7629 | relend = relstart + sec->reloc_count; | |
435edf0b | 7630 | for (rel = relstart; rel < relend; rel++) |
3e04d765 AM |
7631 | { |
7632 | enum elf_ppc64_reloc_type r_type; | |
7633 | unsigned long r_symndx; | |
7634 | asection *sym_sec; | |
7635 | struct elf_link_hash_entry *h; | |
7636 | Elf_Internal_Sym *sym; | |
7637 | unsigned char *tls_maskp; | |
7638 | ||
7639 | r_type = ELF64_R_TYPE (rel->r_info); | |
5663e321 AM |
7640 | if (r_type != R_PPC64_PLTCALL |
7641 | && r_type != R_PPC64_PLTCALL_NOTOC) | |
3e04d765 AM |
7642 | continue; |
7643 | ||
7644 | r_symndx = ELF64_R_SYM (rel->r_info); | |
7645 | if (!get_sym_h (&h, &sym, &sym_sec, &tls_maskp, &local_syms, | |
7646 | r_symndx, ibfd)) | |
7647 | { | |
7648 | if (elf_section_data (sec)->relocs != relstart) | |
7649 | free (relstart); | |
c9594989 | 7650 | if (symtab_hdr->contents != (bfd_byte *) local_syms) |
3e04d765 AM |
7651 | free (local_syms); |
7652 | return FALSE; | |
7653 | } | |
7654 | ||
7655 | if (sym_sec != NULL && sym_sec->output_section != NULL) | |
7656 | { | |
7657 | bfd_vma from, to; | |
7658 | if (h != NULL) | |
7659 | to = h->root.u.def.value; | |
7660 | else | |
7661 | to = sym->st_value; | |
7662 | to += (rel->r_addend | |
7663 | + sym_sec->output_offset | |
7664 | + sym_sec->output_section->vma); | |
7665 | from = (rel->r_offset | |
7666 | + sec->output_offset | |
7667 | + sec->output_section->vma); | |
5663e321 AM |
7668 | if (to - from + limit < 2 * limit |
7669 | && !(r_type == R_PPC64_PLTCALL_NOTOC | |
7670 | && (((h ? h->other : sym->st_other) | |
7671 | & STO_PPC64_LOCAL_MASK) | |
4a4e7361 | 7672 | > 1 << STO_PPC64_LOCAL_BIT))) |
3e04d765 AM |
7673 | *tls_maskp &= ~PLT_KEEP; |
7674 | } | |
7675 | } | |
7676 | if (elf_section_data (sec)->relocs != relstart) | |
7677 | free (relstart); | |
7678 | } | |
7679 | ||
7680 | if (local_syms != NULL | |
7681 | && symtab_hdr->contents != (unsigned char *) local_syms) | |
7682 | { | |
7683 | if (!info->keep_memory) | |
7684 | free (local_syms); | |
7685 | else | |
7686 | symtab_hdr->contents = (unsigned char *) local_syms; | |
7687 | } | |
7688 | } | |
7689 | ||
7690 | return TRUE; | |
7691 | } | |
7692 | ||
e1918d23 | 7693 | /* Set htab->tls_get_addr and call the generic ELF tls_setup function. */ |
411e1bfb | 7694 | |
e1918d23 | 7695 | asection * |
e7d1c40c | 7696 | ppc64_elf_tls_setup (struct bfd_link_info *info) |
411e1bfb | 7697 | { |
411e1bfb | 7698 | struct ppc_link_hash_table *htab; |
9e7028aa | 7699 | struct elf_link_hash_entry *tga, *tga_fd, *desc, *desc_fd; |
411e1bfb | 7700 | |
411e1bfb | 7701 | htab = ppc_hash_table (info); |
4dfe6ac6 NC |
7702 | if (htab == NULL) |
7703 | return NULL; | |
7704 | ||
ee67d69a AM |
7705 | if (abiversion (info->output_bfd) == 1) |
7706 | htab->opd_abi = 1; | |
7707 | ||
e7d1c40c | 7708 | if (htab->params->no_multi_toc) |
33c0ec9d AM |
7709 | htab->do_multi_toc = 0; |
7710 | else if (!htab->do_multi_toc) | |
e7d1c40c | 7711 | htab->params->no_multi_toc = 1; |
33c0ec9d | 7712 | |
8b5f1ed8 AM |
7713 | /* Default to --no-plt-localentry, as this option can cause problems |
7714 | with symbol interposition. For example, glibc libpthread.so and | |
7715 | libc.so duplicate many pthread symbols, with a fallback | |
7716 | implementation in libc.so. In some cases the fallback does more | |
7717 | work than the pthread implementation. __pthread_condattr_destroy | |
7718 | is one such symbol: the libpthread.so implementation is | |
7719 | localentry:0 while the libc.so implementation is localentry:8. | |
7720 | An app that "cleverly" uses dlopen to only load necessary | |
7721 | libraries at runtime may omit loading libpthread.so when not | |
7722 | running multi-threaded, which then results in the libc.so | |
7723 | fallback symbols being used and ld.so complaining. Now there | |
7724 | are workarounds in ld (see non_zero_localentry) to detect the | |
7725 | pthread situation, but that may not be the only case where | |
7726 | --plt-localentry can cause trouble. */ | |
f378ab09 | 7727 | if (htab->params->plt_localentry0 < 0) |
8b5f1ed8 | 7728 | htab->params->plt_localentry0 = 0; |
d44c746a AM |
7729 | if (htab->params->plt_localentry0 |
7730 | && elf_link_hash_lookup (&htab->elf, "GLIBC_2.26", | |
7731 | FALSE, FALSE, FALSE) == NULL) | |
cf97bcb0 AM |
7732 | _bfd_error_handler |
7733 | (_("warning: --plt-localentry is especially dangerous without " | |
7734 | "ld.so support to detect ABI violations")); | |
f378ab09 | 7735 | |
9e7028aa AM |
7736 | tga = elf_link_hash_lookup (&htab->elf, ".__tls_get_addr", |
7737 | FALSE, FALSE, TRUE); | |
7738 | htab->tls_get_addr = ppc_elf_hash_entry (tga); | |
7739 | ||
a7f2871e | 7740 | /* Move dynamic linking info to the function descriptor sym. */ |
9e7028aa AM |
7741 | if (tga != NULL) |
7742 | func_desc_adjust (tga, info); | |
7743 | tga_fd = elf_link_hash_lookup (&htab->elf, "__tls_get_addr", | |
7744 | FALSE, FALSE, TRUE); | |
7745 | htab->tls_get_addr_fd = ppc_elf_hash_entry (tga_fd); | |
7746 | ||
7747 | desc = elf_link_hash_lookup (&htab->elf, ".__tls_get_addr_desc", | |
7748 | FALSE, FALSE, TRUE); | |
7749 | htab->tga_desc = ppc_elf_hash_entry (desc); | |
7750 | if (desc != NULL) | |
7751 | func_desc_adjust (desc, info); | |
7752 | desc_fd = elf_link_hash_lookup (&htab->elf, "__tls_get_addr_desc", | |
7753 | FALSE, FALSE, TRUE); | |
7754 | htab->tga_desc_fd = ppc_elf_hash_entry (desc_fd); | |
7755 | ||
7c9cf415 | 7756 | if (htab->params->tls_get_addr_opt) |
a7f2871e | 7757 | { |
9e7028aa | 7758 | struct elf_link_hash_entry *opt, *opt_fd; |
a7f2871e AM |
7759 | |
7760 | opt = elf_link_hash_lookup (&htab->elf, ".__tls_get_addr_opt", | |
7761 | FALSE, FALSE, TRUE); | |
7762 | if (opt != NULL) | |
7763 | func_desc_adjust (opt, info); | |
7764 | opt_fd = elf_link_hash_lookup (&htab->elf, "__tls_get_addr_opt", | |
7765 | FALSE, FALSE, TRUE); | |
7766 | if (opt_fd != NULL | |
7767 | && (opt_fd->root.type == bfd_link_hash_defined | |
7768 | || opt_fd->root.type == bfd_link_hash_defweak)) | |
7769 | { | |
7770 | /* If glibc supports an optimized __tls_get_addr call stub, | |
7771 | signalled by the presence of __tls_get_addr_opt, and we'll | |
7772 | be calling __tls_get_addr via a plt call stub, then | |
7773 | make __tls_get_addr point to __tls_get_addr_opt. */ | |
9e7028aa AM |
7774 | if (!(htab->elf.dynamic_sections_created |
7775 | && tga_fd != NULL | |
7776 | && (tga_fd->type == STT_FUNC | |
7777 | || tga_fd->needs_plt) | |
7778 | && !(SYMBOL_CALLS_LOCAL (info, tga_fd) | |
7779 | || UNDEFWEAK_NO_DYNAMIC_RELOC (info, tga_fd)))) | |
7780 | tga_fd = NULL; | |
7781 | if (!(htab->elf.dynamic_sections_created | |
7782 | && desc_fd != NULL | |
7783 | && (desc_fd->type == STT_FUNC | |
7784 | || desc_fd->needs_plt) | |
7785 | && !(SYMBOL_CALLS_LOCAL (info, desc_fd) | |
7786 | || UNDEFWEAK_NO_DYNAMIC_RELOC (info, desc_fd)))) | |
7787 | desc_fd = NULL; | |
7788 | ||
7789 | if (tga_fd != NULL || desc_fd != NULL) | |
7790 | { | |
7791 | struct plt_entry *ent = NULL; | |
7792 | ||
7793 | if (tga_fd != NULL) | |
7794 | for (ent = tga_fd->plt.plist; ent != NULL; ent = ent->next) | |
7795 | if (ent->plt.refcount > 0) | |
7796 | break; | |
7797 | if (ent == NULL && desc_fd != NULL) | |
7798 | for (ent = desc_fd->plt.plist; ent != NULL; ent = ent->next) | |
7799 | if (ent->plt.refcount > 0) | |
7800 | break; | |
a7f2871e AM |
7801 | if (ent != NULL) |
7802 | { | |
9e7028aa AM |
7803 | if (tga_fd != NULL) |
7804 | { | |
7805 | tga_fd->root.type = bfd_link_hash_indirect; | |
7806 | tga_fd->root.u.i.link = &opt_fd->root; | |
7807 | tga_fd->root.u.i.warning = NULL; | |
7808 | ppc64_elf_copy_indirect_symbol (info, opt_fd, tga_fd); | |
7809 | } | |
7810 | if (desc_fd != NULL) | |
7811 | { | |
7812 | desc_fd->root.type = bfd_link_hash_indirect; | |
7813 | desc_fd->root.u.i.link = &opt_fd->root; | |
7814 | desc_fd->root.u.i.warning = NULL; | |
7815 | ppc64_elf_copy_indirect_symbol (info, opt_fd, desc_fd); | |
7816 | } | |
b531344c | 7817 | opt_fd->mark = 1; |
a7f2871e AM |
7818 | if (opt_fd->dynindx != -1) |
7819 | { | |
7820 | /* Use __tls_get_addr_opt in dynamic relocations. */ | |
7821 | opt_fd->dynindx = -1; | |
7822 | _bfd_elf_strtab_delref (elf_hash_table (info)->dynstr, | |
7823 | opt_fd->dynstr_index); | |
7824 | if (!bfd_elf_link_record_dynamic_symbol (info, opt_fd)) | |
854b41e7 | 7825 | return NULL; |
a7f2871e | 7826 | } |
9e7028aa | 7827 | if (tga_fd != NULL) |
a7f2871e | 7828 | { |
9e7028aa AM |
7829 | htab->tls_get_addr_fd = ppc_elf_hash_entry (opt_fd); |
7830 | tga = &htab->tls_get_addr->elf; | |
7831 | if (opt != NULL && tga != NULL) | |
7832 | { | |
7833 | tga->root.type = bfd_link_hash_indirect; | |
7834 | tga->root.u.i.link = &opt->root; | |
7835 | tga->root.u.i.warning = NULL; | |
7836 | ppc64_elf_copy_indirect_symbol (info, opt, tga); | |
7837 | opt->mark = 1; | |
7838 | _bfd_elf_link_hash_hide_symbol (info, opt, | |
7839 | tga->forced_local); | |
7840 | htab->tls_get_addr = ppc_elf_hash_entry (opt); | |
7841 | } | |
7842 | htab->tls_get_addr_fd->oh = htab->tls_get_addr; | |
7843 | htab->tls_get_addr_fd->is_func_descriptor = 1; | |
7844 | if (htab->tls_get_addr != NULL) | |
7845 | { | |
7846 | htab->tls_get_addr->oh = htab->tls_get_addr_fd; | |
7847 | htab->tls_get_addr->is_func = 1; | |
7848 | } | |
a7f2871e | 7849 | } |
9e7028aa | 7850 | if (desc_fd != NULL) |
a7f2871e | 7851 | { |
9e7028aa AM |
7852 | htab->tga_desc_fd = ppc_elf_hash_entry (opt_fd); |
7853 | if (opt != NULL && desc != NULL) | |
7854 | { | |
7855 | desc->root.type = bfd_link_hash_indirect; | |
7856 | desc->root.u.i.link = &opt->root; | |
7857 | desc->root.u.i.warning = NULL; | |
7858 | ppc64_elf_copy_indirect_symbol (info, opt, desc); | |
7859 | opt->mark = 1; | |
7860 | _bfd_elf_link_hash_hide_symbol (info, opt, | |
7861 | desc->forced_local); | |
7862 | htab->tga_desc = ppc_elf_hash_entry (opt); | |
7863 | } | |
7864 | htab->tga_desc_fd->oh = htab->tga_desc; | |
7865 | htab->tga_desc_fd->is_func_descriptor = 1; | |
7866 | if (htab->tga_desc != NULL) | |
7867 | { | |
7868 | htab->tga_desc->oh = htab->tga_desc_fd; | |
7869 | htab->tga_desc->is_func = 1; | |
7870 | } | |
a7f2871e AM |
7871 | } |
7872 | } | |
7873 | } | |
7874 | } | |
7c9cf415 AM |
7875 | else if (htab->params->tls_get_addr_opt < 0) |
7876 | htab->params->tls_get_addr_opt = 0; | |
a7f2871e | 7877 | } |
9e7028aa AM |
7878 | |
7879 | if (htab->tga_desc_fd != NULL | |
7880 | && htab->params->tls_get_addr_opt | |
7881 | && htab->params->no_tls_get_addr_regsave == -1) | |
7882 | htab->params->no_tls_get_addr_regsave = 0; | |
7883 | ||
33c0ec9d | 7884 | return _bfd_elf_tls_setup (info->output_bfd, info); |
3a71aa26 | 7885 | } |
8387904d | 7886 | |
3a71aa26 | 7887 | /* Return TRUE iff REL is a branch reloc with a global symbol matching |
9e7028aa | 7888 | any of HASH1, HASH2, HASH3, or HASH4. */ |
8387904d | 7889 | |
3a71aa26 AM |
7890 | static bfd_boolean |
7891 | branch_reloc_hash_match (const bfd *ibfd, | |
7892 | const Elf_Internal_Rela *rel, | |
7893 | const struct ppc_link_hash_entry *hash1, | |
9e7028aa AM |
7894 | const struct ppc_link_hash_entry *hash2, |
7895 | const struct ppc_link_hash_entry *hash3, | |
7896 | const struct ppc_link_hash_entry *hash4) | |
3a71aa26 AM |
7897 | { |
7898 | Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (ibfd); | |
7899 | enum elf_ppc64_reloc_type r_type = ELF64_R_TYPE (rel->r_info); | |
7900 | unsigned int r_symndx = ELF64_R_SYM (rel->r_info); | |
7901 | ||
e054468f | 7902 | if (r_symndx >= symtab_hdr->sh_info && is_branch_reloc (r_type)) |
8387904d | 7903 | { |
3a71aa26 AM |
7904 | struct elf_link_hash_entry **sym_hashes = elf_sym_hashes (ibfd); |
7905 | struct elf_link_hash_entry *h; | |
8387904d | 7906 | |
3a71aa26 | 7907 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; |
b31867b6 | 7908 | h = elf_follow_link (h); |
9e7028aa AM |
7909 | if (h == &hash1->elf || h == &hash2->elf |
7910 | || h == &hash3->elf || h == &hash4->elf) | |
3a71aa26 | 7911 | return TRUE; |
a48ebf4d | 7912 | } |
3a71aa26 | 7913 | return FALSE; |
951fd09b | 7914 | } |
411e1bfb | 7915 | |
951fd09b AM |
7916 | /* Run through all the TLS relocs looking for optimization |
7917 | opportunities. The linker has been hacked (see ppc64elf.em) to do | |
7918 | a preliminary section layout so that we know the TLS segment | |
7919 | offsets. We can't optimize earlier because some optimizations need | |
7920 | to know the tp offset, and we need to optimize before allocating | |
7921 | dynamic relocations. */ | |
7922 | ||
7923 | bfd_boolean | |
33c0ec9d | 7924 | ppc64_elf_tls_optimize (struct bfd_link_info *info) |
951fd09b AM |
7925 | { |
7926 | bfd *ibfd; | |
7927 | asection *sec; | |
7928 | struct ppc_link_hash_table *htab; | |
663a1470 | 7929 | unsigned char *toc_ref; |
102890f0 | 7930 | int pass; |
951fd09b | 7931 | |
3cbc1e5e | 7932 | if (!bfd_link_executable (info)) |
411e1bfb AM |
7933 | return TRUE; |
7934 | ||
951fd09b | 7935 | htab = ppc_hash_table (info); |
4dfe6ac6 NC |
7936 | if (htab == NULL) |
7937 | return FALSE; | |
7938 | ||
663a1470 AM |
7939 | /* Make two passes over the relocs. On the first pass, mark toc |
7940 | entries involved with tls relocs, and check that tls relocs | |
7941 | involved in setting up a tls_get_addr call are indeed followed by | |
7942 | such a call. If they are not, we can't do any tls optimization. | |
7943 | On the second pass twiddle tls_mask flags to notify | |
7944 | relocate_section that optimization can be done, and adjust got | |
7945 | and plt refcounts. */ | |
7946 | toc_ref = NULL; | |
7947 | for (pass = 0; pass < 2; ++pass) | |
c72f2fb2 | 7948 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next) |
663a1470 AM |
7949 | { |
7950 | Elf_Internal_Sym *locsyms = NULL; | |
7951 | asection *toc = bfd_get_section_by_name (ibfd, ".toc"); | |
7952 | ||
102890f0 AM |
7953 | for (sec = ibfd->sections; sec != NULL; sec = sec->next) |
7954 | if (sec->has_tls_reloc && !bfd_is_abs_section (sec->output_section)) | |
7955 | { | |
7956 | Elf_Internal_Rela *relstart, *rel, *relend; | |
663a1470 | 7957 | bfd_boolean found_tls_get_addr_arg = 0; |
411e1bfb | 7958 | |
102890f0 AM |
7959 | /* Read the relocations. */ |
7960 | relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL, | |
7961 | info->keep_memory); | |
7962 | if (relstart == NULL) | |
2915c55b JK |
7963 | { |
7964 | free (toc_ref); | |
7965 | return FALSE; | |
7966 | } | |
411e1bfb | 7967 | |
102890f0 AM |
7968 | relend = relstart + sec->reloc_count; |
7969 | for (rel = relstart; rel < relend; rel++) | |
7970 | { | |
7971 | enum elf_ppc64_reloc_type r_type; | |
7972 | unsigned long r_symndx; | |
7973 | struct elf_link_hash_entry *h; | |
7974 | Elf_Internal_Sym *sym; | |
7975 | asection *sym_sec; | |
f961d9dd | 7976 | unsigned char *tls_mask; |
46e9995a | 7977 | unsigned int tls_set, tls_clear, tls_type = 0; |
102890f0 AM |
7978 | bfd_vma value; |
7979 | bfd_boolean ok_tprel, is_local; | |
7980 | long toc_ref_index = 0; | |
7981 | int expecting_tls_get_addr = 0; | |
663a1470 | 7982 | bfd_boolean ret = FALSE; |
411e1bfb | 7983 | |
102890f0 AM |
7984 | r_symndx = ELF64_R_SYM (rel->r_info); |
7985 | if (!get_sym_h (&h, &sym, &sym_sec, &tls_mask, &locsyms, | |
7986 | r_symndx, ibfd)) | |
7987 | { | |
7988 | err_free_rel: | |
7989 | if (elf_section_data (sec)->relocs != relstart) | |
7990 | free (relstart); | |
c9594989 AM |
7991 | free (toc_ref); |
7992 | if (elf_symtab_hdr (ibfd).contents | |
7993 | != (unsigned char *) locsyms) | |
102890f0 | 7994 | free (locsyms); |
663a1470 | 7995 | return ret; |
102890f0 | 7996 | } |
411e1bfb | 7997 | |
102890f0 AM |
7998 | if (h != NULL) |
7999 | { | |
766bc656 AM |
8000 | if (h->root.type == bfd_link_hash_defined |
8001 | || h->root.type == bfd_link_hash_defweak) | |
8002 | value = h->root.u.def.value; | |
8003 | else if (h->root.type == bfd_link_hash_undefweak) | |
8004 | value = 0; | |
8005 | else | |
663a1470 AM |
8006 | { |
8007 | found_tls_get_addr_arg = 0; | |
8008 | continue; | |
8009 | } | |
102890f0 AM |
8010 | } |
8011 | else | |
8012 | /* Symbols referenced by TLS relocs must be of type | |
8013 | STT_TLS. So no need for .opd local sym adjust. */ | |
8014 | value = sym->st_value; | |
8015 | ||
8016 | ok_tprel = FALSE; | |
f749f26e AM |
8017 | is_local = SYMBOL_REFERENCES_LOCAL (info, h); |
8018 | if (is_local) | |
102890f0 | 8019 | { |
766bc656 AM |
8020 | if (h != NULL |
8021 | && h->root.type == bfd_link_hash_undefweak) | |
8022 | ok_tprel = TRUE; | |
c27b8c2a AM |
8023 | else if (sym_sec != NULL |
8024 | && sym_sec->output_section != NULL) | |
766bc656 AM |
8025 | { |
8026 | value += sym_sec->output_offset; | |
8027 | value += sym_sec->output_section->vma; | |
0b147428 | 8028 | value -= htab->elf.tls_sec->vma + TP_OFFSET; |
c213164a AM |
8029 | /* Note that even though the prefix insns |
8030 | allow a 1<<33 offset we use the same test | |
8031 | as for addis;addi. There may be a mix of | |
8032 | pcrel and non-pcrel code and the decision | |
8033 | to optimise is per symbol, not per TLS | |
8034 | sequence. */ | |
0b147428 | 8035 | ok_tprel = value + 0x80008000ULL < 1ULL << 32; |
766bc656 | 8036 | } |
102890f0 | 8037 | } |
951fd09b | 8038 | |
102890f0 | 8039 | r_type = ELF64_R_TYPE (rel->r_info); |
663a1470 AM |
8040 | /* If this section has old-style __tls_get_addr calls |
8041 | without marker relocs, then check that each | |
8042 | __tls_get_addr call reloc is preceded by a reloc | |
8043 | that conceivably belongs to the __tls_get_addr arg | |
8044 | setup insn. If we don't find matching arg setup | |
8045 | relocs, don't do any tls optimization. */ | |
8046 | if (pass == 0 | |
9737e8af | 8047 | && sec->nomark_tls_get_addr |
663a1470 | 8048 | && h != NULL |
ed7007c1 | 8049 | && is_tls_get_addr (h, htab) |
663a1470 AM |
8050 | && !found_tls_get_addr_arg |
8051 | && is_branch_reloc (r_type)) | |
8052 | { | |
25f53a85 | 8053 | info->callbacks->minfo (_("%H __tls_get_addr lost arg, " |
663a1470 AM |
8054 | "TLS optimization disabled\n"), |
8055 | ibfd, sec, rel->r_offset); | |
8056 | ret = TRUE; | |
8057 | goto err_free_rel; | |
8058 | } | |
8059 | ||
8060 | found_tls_get_addr_arg = 0; | |
102890f0 AM |
8061 | switch (r_type) |
8062 | { | |
8063 | case R_PPC64_GOT_TLSLD16: | |
8064 | case R_PPC64_GOT_TLSLD16_LO: | |
87c69f97 | 8065 | case R_PPC64_GOT_TLSLD_PCREL34: |
102890f0 | 8066 | expecting_tls_get_addr = 1; |
663a1470 | 8067 | found_tls_get_addr_arg = 1; |
1a0670f3 | 8068 | /* Fall through. */ |
102890f0 AM |
8069 | |
8070 | case R_PPC64_GOT_TLSLD16_HI: | |
8071 | case R_PPC64_GOT_TLSLD16_HA: | |
8072 | /* These relocs should never be against a symbol | |
8073 | defined in a shared lib. Leave them alone if | |
8074 | that turns out to be the case. */ | |
8075 | if (!is_local) | |
8076 | continue; | |
411e1bfb | 8077 | |
102890f0 | 8078 | /* LD -> LE */ |
411e1bfb | 8079 | tls_set = 0; |
102890f0 AM |
8080 | tls_clear = TLS_LD; |
8081 | tls_type = TLS_TLS | TLS_LD; | |
8082 | break; | |
411e1bfb | 8083 | |
102890f0 AM |
8084 | case R_PPC64_GOT_TLSGD16: |
8085 | case R_PPC64_GOT_TLSGD16_LO: | |
87c69f97 | 8086 | case R_PPC64_GOT_TLSGD_PCREL34: |
102890f0 | 8087 | expecting_tls_get_addr = 1; |
663a1470 | 8088 | found_tls_get_addr_arg = 1; |
1a0670f3 | 8089 | /* Fall through. */ |
102890f0 AM |
8090 | |
8091 | case R_PPC64_GOT_TLSGD16_HI: | |
8092 | case R_PPC64_GOT_TLSGD16_HA: | |
8093 | if (ok_tprel) | |
8094 | /* GD -> LE */ | |
411e1bfb | 8095 | tls_set = 0; |
102890f0 AM |
8096 | else |
8097 | /* GD -> IE */ | |
b00a0a86 | 8098 | tls_set = TLS_TLS | TLS_GDIE; |
102890f0 AM |
8099 | tls_clear = TLS_GD; |
8100 | tls_type = TLS_TLS | TLS_GD; | |
8101 | break; | |
8102 | ||
87c69f97 | 8103 | case R_PPC64_GOT_TPREL_PCREL34: |
102890f0 AM |
8104 | case R_PPC64_GOT_TPREL16_DS: |
8105 | case R_PPC64_GOT_TPREL16_LO_DS: | |
8106 | case R_PPC64_GOT_TPREL16_HI: | |
8107 | case R_PPC64_GOT_TPREL16_HA: | |
8108 | if (ok_tprel) | |
8109 | { | |
8110 | /* IE -> LE */ | |
8111 | tls_set = 0; | |
8112 | tls_clear = TLS_TPREL; | |
8113 | tls_type = TLS_TLS | TLS_TPREL; | |
8114 | break; | |
8115 | } | |
411e1bfb AM |
8116 | continue; |
8117 | ||
727fc41e | 8118 | case R_PPC64_TLSLD: |
7d04a20a AM |
8119 | if (!is_local) |
8120 | continue; | |
8121 | /* Fall through. */ | |
8122 | case R_PPC64_TLSGD: | |
23cedd1d AM |
8123 | if (rel + 1 < relend |
8124 | && is_plt_seq_reloc (ELF64_R_TYPE (rel[1].r_info))) | |
8125 | { | |
8126 | if (pass != 0 | |
2cdcc330 | 8127 | && (ELF64_R_TYPE (rel[1].r_info) |
5663e321 AM |
8128 | != R_PPC64_PLTSEQ) |
8129 | && (ELF64_R_TYPE (rel[1].r_info) | |
8130 | != R_PPC64_PLTSEQ_NOTOC)) | |
23cedd1d AM |
8131 | { |
8132 | r_symndx = ELF64_R_SYM (rel[1].r_info); | |
8133 | if (!get_sym_h (&h, NULL, NULL, NULL, &locsyms, | |
2cdcc330 | 8134 | r_symndx, ibfd)) |
23cedd1d AM |
8135 | goto err_free_rel; |
8136 | if (h != NULL) | |
8137 | { | |
8138 | struct plt_entry *ent = NULL; | |
8139 | ||
8140 | for (ent = h->plt.plist; | |
8141 | ent != NULL; | |
8142 | ent = ent->next) | |
8143 | if (ent->addend == rel[1].r_addend) | |
8144 | break; | |
8145 | ||
8146 | if (ent != NULL | |
8147 | && ent->plt.refcount > 0) | |
8148 | ent->plt.refcount -= 1; | |
8149 | } | |
8150 | } | |
8151 | continue; | |
8152 | } | |
663a1470 | 8153 | found_tls_get_addr_arg = 1; |
1a0670f3 | 8154 | /* Fall through. */ |
663a1470 AM |
8155 | |
8156 | case R_PPC64_TLS: | |
8157 | case R_PPC64_TOC16: | |
8158 | case R_PPC64_TOC16_LO: | |
102890f0 AM |
8159 | if (sym_sec == NULL || sym_sec != toc) |
8160 | continue; | |
8161 | ||
8162 | /* Mark this toc entry as referenced by a TLS | |
8163 | code sequence. We can do that now in the | |
8164 | case of R_PPC64_TLS, and after checking for | |
8165 | tls_get_addr for the TOC16 relocs. */ | |
8166 | if (toc_ref == NULL) | |
2cdcc330 AM |
8167 | toc_ref |
8168 | = bfd_zmalloc (toc->output_section->rawsize / 8); | |
663a1470 AM |
8169 | if (toc_ref == NULL) |
8170 | goto err_free_rel; | |
8171 | ||
102890f0 AM |
8172 | if (h != NULL) |
8173 | value = h->root.u.def.value; | |
8174 | else | |
8175 | value = sym->st_value; | |
8176 | value += rel->r_addend; | |
73242275 AM |
8177 | if (value % 8 != 0) |
8178 | continue; | |
8179 | BFD_ASSERT (value < toc->size | |
8180 | && toc->output_offset % 8 == 0); | |
663a1470 | 8181 | toc_ref_index = (value + toc->output_offset) / 8; |
727fc41e AM |
8182 | if (r_type == R_PPC64_TLS |
8183 | || r_type == R_PPC64_TLSGD | |
8184 | || r_type == R_PPC64_TLSLD) | |
102890f0 AM |
8185 | { |
8186 | toc_ref[toc_ref_index] = 1; | |
8187 | continue; | |
8188 | } | |
8189 | ||
8190 | if (pass != 0 && toc_ref[toc_ref_index] == 0) | |
8191 | continue; | |
8192 | ||
8193 | tls_set = 0; | |
8194 | tls_clear = 0; | |
8195 | expecting_tls_get_addr = 2; | |
8196 | break; | |
8197 | ||
8198 | case R_PPC64_TPREL64: | |
8199 | if (pass == 0 | |
8200 | || sec != toc | |
8201 | || toc_ref == NULL | |
663a1470 | 8202 | || !toc_ref[(rel->r_offset + toc->output_offset) / 8]) |
102890f0 AM |
8203 | continue; |
8204 | if (ok_tprel) | |
8205 | { | |
8206 | /* IE -> LE */ | |
8207 | tls_set = TLS_EXPLICIT; | |
8208 | tls_clear = TLS_TPREL; | |
8209 | break; | |
8210 | } | |
8211 | continue; | |
8212 | ||
8213 | case R_PPC64_DTPMOD64: | |
8214 | if (pass == 0 | |
8215 | || sec != toc | |
8216 | || toc_ref == NULL | |
663a1470 | 8217 | || !toc_ref[(rel->r_offset + toc->output_offset) / 8]) |
102890f0 AM |
8218 | continue; |
8219 | if (rel + 1 < relend | |
8220 | && (rel[1].r_info | |
8221 | == ELF64_R_INFO (r_symndx, R_PPC64_DTPREL64)) | |
8222 | && rel[1].r_offset == rel->r_offset + 8) | |
8223 | { | |
8224 | if (ok_tprel) | |
8225 | /* GD -> LE */ | |
8226 | tls_set = TLS_EXPLICIT | TLS_GD; | |
8227 | else | |
8228 | /* GD -> IE */ | |
b00a0a86 | 8229 | tls_set = TLS_EXPLICIT | TLS_GD | TLS_GDIE; |
102890f0 AM |
8230 | tls_clear = TLS_GD; |
8231 | } | |
8232 | else | |
8233 | { | |
8234 | if (!is_local) | |
8235 | continue; | |
8236 | ||
8237 | /* LD -> LE */ | |
8238 | tls_set = TLS_EXPLICIT; | |
8239 | tls_clear = TLS_LD; | |
8240 | } | |
8241 | break; | |
8242 | ||
8243 | default: | |
8244 | continue; | |
8245 | } | |
8246 | ||
8247 | if (pass == 0) | |
8248 | { | |
727fc41e | 8249 | if (!expecting_tls_get_addr |
9737e8af | 8250 | || !sec->nomark_tls_get_addr) |
102890f0 AM |
8251 | continue; |
8252 | ||
3a71aa26 AM |
8253 | if (rel + 1 < relend |
8254 | && branch_reloc_hash_match (ibfd, rel + 1, | |
9e7028aa AM |
8255 | htab->tls_get_addr_fd, |
8256 | htab->tga_desc_fd, | |
3a71aa26 | 8257 | htab->tls_get_addr, |
9e7028aa | 8258 | htab->tga_desc)) |
102890f0 | 8259 | { |
3a71aa26 | 8260 | if (expecting_tls_get_addr == 2) |
102890f0 | 8261 | { |
3a71aa26 | 8262 | /* Check for toc tls entries. */ |
f961d9dd | 8263 | unsigned char *toc_tls; |
3a71aa26 AM |
8264 | int retval; |
8265 | ||
8266 | retval = get_tls_mask (&toc_tls, NULL, NULL, | |
8267 | &locsyms, | |
8268 | rel, ibfd); | |
8269 | if (retval == 0) | |
8270 | goto err_free_rel; | |
663a1470 AM |
8271 | if (toc_tls != NULL) |
8272 | { | |
37da22e5 AM |
8273 | if ((*toc_tls & TLS_TLS) != 0 |
8274 | && ((*toc_tls & (TLS_GD | TLS_LD)) != 0)) | |
663a1470 AM |
8275 | found_tls_get_addr_arg = 1; |
8276 | if (retval > 1) | |
8277 | toc_ref[toc_ref_index] = 1; | |
8278 | } | |
102890f0 | 8279 | } |
3a71aa26 | 8280 | continue; |
102890f0 AM |
8281 | } |
8282 | ||
102890f0 AM |
8283 | /* Uh oh, we didn't find the expected call. We |
8284 | could just mark this symbol to exclude it | |
8285 | from tls optimization but it's safer to skip | |
663a1470 | 8286 | the entire optimization. */ |
695344c0 | 8287 | /* xgettext:c-format */ |
25f53a85 | 8288 | info->callbacks->minfo (_("%H arg lost __tls_get_addr, " |
663a1470 AM |
8289 | "TLS optimization disabled\n"), |
8290 | ibfd, sec, rel->r_offset); | |
8291 | ret = TRUE; | |
8292 | goto err_free_rel; | |
102890f0 AM |
8293 | } |
8294 | ||
37da22e5 AM |
8295 | /* If we don't have old-style __tls_get_addr calls |
8296 | without TLSGD/TLSLD marker relocs, and we haven't | |
8297 | found a new-style __tls_get_addr call with a | |
8298 | marker for this symbol, then we either have a | |
8299 | broken object file or an -mlongcall style | |
8300 | indirect call to __tls_get_addr without a marker. | |
8301 | Disable optimization in this case. */ | |
8302 | if ((tls_clear & (TLS_GD | TLS_LD)) != 0 | |
8303 | && (tls_set & TLS_EXPLICIT) == 0 | |
9737e8af | 8304 | && !sec->nomark_tls_get_addr |
37da22e5 AM |
8305 | && ((*tls_mask & (TLS_TLS | TLS_MARK)) |
8306 | != (TLS_TLS | TLS_MARK))) | |
8307 | continue; | |
8308 | ||
7d04a20a | 8309 | if (expecting_tls_get_addr == 1 + !sec->nomark_tls_get_addr) |
102890f0 | 8310 | { |
23cedd1d AM |
8311 | struct plt_entry *ent = NULL; |
8312 | ||
9e7028aa AM |
8313 | if (htab->tls_get_addr_fd != NULL) |
8314 | for (ent = htab->tls_get_addr_fd->elf.plt.plist; | |
8315 | ent != NULL; | |
8316 | ent = ent->next) | |
8317 | if (ent->addend == 0) | |
8318 | break; | |
8319 | ||
8320 | if (ent == NULL && htab->tga_desc_fd != NULL) | |
8321 | for (ent = htab->tga_desc_fd->elf.plt.plist; | |
8322 | ent != NULL; | |
8323 | ent = ent->next) | |
8324 | if (ent->addend == 0) | |
8325 | break; | |
8326 | ||
8327 | if (ent == NULL && htab->tls_get_addr != NULL) | |
23cedd1d AM |
8328 | for (ent = htab->tls_get_addr->elf.plt.plist; |
8329 | ent != NULL; | |
8330 | ent = ent->next) | |
8331 | if (ent->addend == 0) | |
102890f0 | 8332 | break; |
411e1bfb | 8333 | |
9e7028aa AM |
8334 | if (ent == NULL && htab->tga_desc != NULL) |
8335 | for (ent = htab->tga_desc->elf.plt.plist; | |
23cedd1d AM |
8336 | ent != NULL; |
8337 | ent = ent->next) | |
8338 | if (ent->addend == 0) | |
102890f0 | 8339 | break; |
23cedd1d AM |
8340 | |
8341 | if (ent != NULL | |
8342 | && ent->plt.refcount > 0) | |
8343 | ent->plt.refcount -= 1; | |
102890f0 | 8344 | } |
411e1bfb | 8345 | |
102890f0 | 8346 | if (tls_clear == 0) |
30038c59 AM |
8347 | continue; |
8348 | ||
102890f0 AM |
8349 | if ((tls_set & TLS_EXPLICIT) == 0) |
8350 | { | |
8351 | struct got_entry *ent; | |
411e1bfb | 8352 | |
102890f0 AM |
8353 | /* Adjust got entry for this reloc. */ |
8354 | if (h != NULL) | |
8355 | ent = h->got.glist; | |
8356 | else | |
8357 | ent = elf_local_got_ents (ibfd)[r_symndx]; | |
411e1bfb | 8358 | |
102890f0 AM |
8359 | for (; ent != NULL; ent = ent->next) |
8360 | if (ent->addend == rel->r_addend | |
8361 | && ent->owner == ibfd | |
8362 | && ent->tls_type == tls_type) | |
8363 | break; | |
8364 | if (ent == NULL) | |
8365 | abort (); | |
411e1bfb | 8366 | |
102890f0 AM |
8367 | if (tls_set == 0) |
8368 | { | |
8369 | /* We managed to get rid of a got entry. */ | |
8370 | if (ent->got.refcount > 0) | |
8371 | ent->got.refcount -= 1; | |
8372 | } | |
8373 | } | |
8374 | else | |
8375 | { | |
8376 | /* If we got rid of a DTPMOD/DTPREL reloc pair then | |
8377 | we'll lose one or two dyn relocs. */ | |
8378 | if (!dec_dynrel_count (rel->r_info, sec, info, | |
19e08130 | 8379 | NULL, h, sym)) |
102890f0 | 8380 | return FALSE; |
411e1bfb | 8381 | |
102890f0 AM |
8382 | if (tls_set == (TLS_EXPLICIT | TLS_GD)) |
8383 | { | |
8384 | if (!dec_dynrel_count ((rel + 1)->r_info, sec, info, | |
19e08130 | 8385 | NULL, h, sym)) |
102890f0 AM |
8386 | return FALSE; |
8387 | } | |
8388 | } | |
411e1bfb | 8389 | |
46e9995a | 8390 | *tls_mask |= tls_set & 0xff; |
102890f0 AM |
8391 | *tls_mask &= ~tls_clear; |
8392 | } | |
8c1d1bb8 | 8393 | |
102890f0 AM |
8394 | if (elf_section_data (sec)->relocs != relstart) |
8395 | free (relstart); | |
8396 | } | |
411e1bfb | 8397 | |
663a1470 AM |
8398 | if (locsyms != NULL |
8399 | && (elf_symtab_hdr (ibfd).contents != (unsigned char *) locsyms)) | |
8400 | { | |
8401 | if (!info->keep_memory) | |
8402 | free (locsyms); | |
8403 | else | |
8404 | elf_symtab_hdr (ibfd).contents = (unsigned char *) locsyms; | |
8405 | } | |
8406 | } | |
411e1bfb | 8407 | |
c9594989 | 8408 | free (toc_ref); |
9a23f96e | 8409 | htab->do_tls_opt = 1; |
b34976b6 | 8410 | return TRUE; |
1e2f5b6e | 8411 | } |
b34976b6 | 8412 | |
c5614fa4 AM |
8413 | /* Called via elf_link_hash_traverse from ppc64_elf_edit_toc to adjust |
8414 | the values of any global symbols in a toc section that has been | |
8415 | edited. Globals in toc sections should be a rarity, so this function | |
8416 | sets a flag if any are found in toc sections other than the one just | |
de194d85 | 8417 | edited, so that further hash table traversals can be avoided. */ |
c5614fa4 AM |
8418 | |
8419 | struct adjust_toc_info | |
8420 | { | |
8421 | asection *toc; | |
8422 | unsigned long *skip; | |
8423 | bfd_boolean global_toc_syms; | |
8424 | }; | |
8425 | ||
ba761f19 AM |
8426 | enum toc_skip_enum { ref_from_discarded = 1, can_optimize = 2 }; |
8427 | ||
c5614fa4 AM |
8428 | static bfd_boolean |
8429 | adjust_toc_syms (struct elf_link_hash_entry *h, void *inf) | |
8430 | { | |
8431 | struct ppc_link_hash_entry *eh; | |
8432 | struct adjust_toc_info *toc_inf = (struct adjust_toc_info *) inf; | |
854b41e7 | 8433 | unsigned long i; |
c5614fa4 | 8434 | |
c5614fa4 AM |
8435 | if (h->root.type != bfd_link_hash_defined |
8436 | && h->root.type != bfd_link_hash_defweak) | |
8437 | return TRUE; | |
8438 | ||
ed7007c1 | 8439 | eh = ppc_elf_hash_entry (h); |
c5614fa4 AM |
8440 | if (eh->adjust_done) |
8441 | return TRUE; | |
8442 | ||
8443 | if (eh->elf.root.u.def.section == toc_inf->toc) | |
8444 | { | |
854b41e7 AM |
8445 | if (eh->elf.root.u.def.value > toc_inf->toc->rawsize) |
8446 | i = toc_inf->toc->rawsize >> 3; | |
c5614fa4 | 8447 | else |
854b41e7 AM |
8448 | i = eh->elf.root.u.def.value >> 3; |
8449 | ||
ba761f19 | 8450 | if ((toc_inf->skip[i] & (ref_from_discarded | can_optimize)) != 0) |
c5614fa4 | 8451 | { |
4eca0228 | 8452 | _bfd_error_handler |
854b41e7 AM |
8453 | (_("%s defined on removed toc entry"), eh->elf.root.root.string); |
8454 | do | |
8455 | ++i; | |
ba761f19 | 8456 | while ((toc_inf->skip[i] & (ref_from_discarded | can_optimize)) != 0); |
854b41e7 | 8457 | eh->elf.root.u.def.value = (bfd_vma) i << 3; |
c5614fa4 | 8458 | } |
854b41e7 AM |
8459 | |
8460 | eh->elf.root.u.def.value -= toc_inf->skip[i]; | |
c5614fa4 AM |
8461 | eh->adjust_done = 1; |
8462 | } | |
8463 | else if (strcmp (eh->elf.root.u.def.section->name, ".toc") == 0) | |
8464 | toc_inf->global_toc_syms = TRUE; | |
8465 | ||
8466 | return TRUE; | |
8467 | } | |
8468 | ||
39eeab25 AM |
8469 | /* Return TRUE iff INSN with a relocation of R_TYPE is one we expect |
8470 | on a _LO variety toc/got reloc. */ | |
560c8763 AM |
8471 | |
8472 | static bfd_boolean | |
39eeab25 | 8473 | ok_lo_toc_insn (unsigned int insn, enum elf_ppc64_reloc_type r_type) |
560c8763 | 8474 | { |
2365f8d7 AM |
8475 | return ((insn & (0x3fu << 26)) == 12u << 26 /* addic */ |
8476 | || (insn & (0x3fu << 26)) == 14u << 26 /* addi */ | |
8477 | || (insn & (0x3fu << 26)) == 32u << 26 /* lwz */ | |
8478 | || (insn & (0x3fu << 26)) == 34u << 26 /* lbz */ | |
8479 | || (insn & (0x3fu << 26)) == 36u << 26 /* stw */ | |
8480 | || (insn & (0x3fu << 26)) == 38u << 26 /* stb */ | |
8481 | || (insn & (0x3fu << 26)) == 40u << 26 /* lhz */ | |
8482 | || (insn & (0x3fu << 26)) == 42u << 26 /* lha */ | |
8483 | || (insn & (0x3fu << 26)) == 44u << 26 /* sth */ | |
8484 | || (insn & (0x3fu << 26)) == 46u << 26 /* lmw */ | |
8485 | || (insn & (0x3fu << 26)) == 47u << 26 /* stmw */ | |
8486 | || (insn & (0x3fu << 26)) == 48u << 26 /* lfs */ | |
8487 | || (insn & (0x3fu << 26)) == 50u << 26 /* lfd */ | |
8488 | || (insn & (0x3fu << 26)) == 52u << 26 /* stfs */ | |
8489 | || (insn & (0x3fu << 26)) == 54u << 26 /* stfd */ | |
8490 | || (insn & (0x3fu << 26)) == 56u << 26 /* lq,lfq */ | |
8491 | || ((insn & (0x3fu << 26)) == 57u << 26 /* lxsd,lxssp,lfdp */ | |
39eeab25 AM |
8492 | /* Exclude lfqu by testing reloc. If relocs are ever |
8493 | defined for the reduced D field in psq_lu then those | |
8494 | will need testing too. */ | |
8495 | && r_type != R_PPC64_TOC16_LO && r_type != R_PPC64_GOT16_LO) | |
2365f8d7 | 8496 | || ((insn & (0x3fu << 26)) == 58u << 26 /* ld,lwa */ |
39eeab25 | 8497 | && (insn & 1) == 0) |
2365f8d7 AM |
8498 | || (insn & (0x3fu << 26)) == 60u << 26 /* stfq */ |
8499 | || ((insn & (0x3fu << 26)) == 61u << 26 /* lxv,stx{v,sd,ssp},stfdp */ | |
39eeab25 AM |
8500 | /* Exclude stfqu. psq_stu as above for psq_lu. */ |
8501 | && r_type != R_PPC64_TOC16_LO && r_type != R_PPC64_GOT16_LO) | |
2365f8d7 | 8502 | || ((insn & (0x3fu << 26)) == 62u << 26 /* std,stq */ |
39eeab25 | 8503 | && (insn & 1) == 0)); |
560c8763 AM |
8504 | } |
8505 | ||
4a421c53 AM |
8506 | /* PCREL_OPT in one instance flags to the linker that a pair of insns: |
8507 | pld ra,symbol@got@pcrel | |
dd9b12c2 | 8508 | load/store rt,off(ra) |
4a421c53 | 8509 | or |
d4b87b1e | 8510 | pla ra,symbol@pcrel |
dd9b12c2 | 8511 | load/store rt,off(ra) |
4a421c53 | 8512 | may be translated to |
dd9b12c2 | 8513 | pload/pstore rt,symbol+off@pcrel |
4a421c53 AM |
8514 | nop. |
8515 | This function returns true if the optimization is possible, placing | |
dd9b12c2 | 8516 | the prefix insn in *PINSN1, a NOP in *PINSN2 and the offset in *POFF. |
4a421c53 AM |
8517 | |
8518 | On entry to this function, the linker has already determined that | |
d4b87b1e | 8519 | the pld can be replaced with pla: *PINSN1 is that pla insn, |
4a421c53 AM |
8520 | while *PINSN2 is the second instruction. */ |
8521 | ||
8522 | static bfd_boolean | |
dd9b12c2 | 8523 | xlate_pcrel_opt (uint64_t *pinsn1, uint64_t *pinsn2, bfd_signed_vma *poff) |
4a421c53 | 8524 | { |
77486630 AM |
8525 | uint64_t insn1 = *pinsn1; |
8526 | uint64_t insn2 = *pinsn2; | |
dd9b12c2 | 8527 | bfd_signed_vma off; |
4a421c53 | 8528 | |
77486630 AM |
8529 | if ((insn2 & (63ULL << 58)) == 1ULL << 58) |
8530 | { | |
8531 | /* Check that regs match. */ | |
8532 | if (((insn2 >> 16) & 31) != ((insn1 >> 21) & 31)) | |
8533 | return FALSE; | |
8534 | ||
8535 | /* P8LS or PMLS form, non-pcrel. */ | |
8536 | if ((insn2 & (-1ULL << 50) & ~(1ULL << 56)) != (1ULL << 58)) | |
8537 | return FALSE; | |
8538 | ||
8539 | *pinsn1 = (insn2 & ~(31 << 16) & ~0x3ffff0000ffffULL) | (1ULL << 52); | |
8540 | *pinsn2 = PNOP; | |
8541 | off = ((insn2 >> 16) & 0x3ffff0000ULL) | (insn2 & 0xffff); | |
8542 | *poff = (off ^ 0x200000000ULL) - 0x200000000ULL; | |
8543 | return TRUE; | |
8544 | } | |
8545 | ||
8546 | insn2 >>= 32; | |
8547 | ||
4a421c53 | 8548 | /* Check that regs match. */ |
77486630 | 8549 | if (((insn2 >> 16) & 31) != ((insn1 >> 21) & 31)) |
4a421c53 AM |
8550 | return FALSE; |
8551 | ||
8552 | switch ((insn2 >> 26) & 63) | |
8553 | { | |
8554 | default: | |
8555 | return FALSE; | |
8556 | ||
8557 | case 32: /* lwz */ | |
8558 | case 34: /* lbz */ | |
8559 | case 36: /* stw */ | |
8560 | case 38: /* stb */ | |
8561 | case 40: /* lhz */ | |
8562 | case 42: /* lha */ | |
8563 | case 44: /* sth */ | |
8564 | case 48: /* lfs */ | |
8565 | case 50: /* lfd */ | |
8566 | case 52: /* stfs */ | |
8567 | case 54: /* stfd */ | |
8568 | /* These are the PMLS cases, where we just need to tack a prefix | |
dd9b12c2 | 8569 | on the insn. */ |
77486630 | 8570 | insn1 = ((1ULL << 58) | (2ULL << 56) | (1ULL << 52) |
4a421c53 | 8571 | | (insn2 & ((63ULL << 26) | (31ULL << 21)))); |
dd9b12c2 | 8572 | off = insn2 & 0xffff; |
4a421c53 AM |
8573 | break; |
8574 | ||
8575 | case 58: /* lwa, ld */ | |
dd9b12c2 | 8576 | if ((insn2 & 1) != 0) |
4a421c53 | 8577 | return FALSE; |
77486630 | 8578 | insn1 = ((1ULL << 58) | (1ULL << 52) |
4a421c53 AM |
8579 | | (insn2 & 2 ? 41ULL << 26 : 57ULL << 26) |
8580 | | (insn2 & (31ULL << 21))); | |
dd9b12c2 | 8581 | off = insn2 & 0xfffc; |
4a421c53 AM |
8582 | break; |
8583 | ||
8584 | case 57: /* lxsd, lxssp */ | |
dd9b12c2 | 8585 | if ((insn2 & 3) < 2) |
4a421c53 | 8586 | return FALSE; |
77486630 | 8587 | insn1 = ((1ULL << 58) | (1ULL << 52) |
4a421c53 AM |
8588 | | ((40ULL | (insn2 & 3)) << 26) |
8589 | | (insn2 & (31ULL << 21))); | |
dd9b12c2 | 8590 | off = insn2 & 0xfffc; |
4a421c53 AM |
8591 | break; |
8592 | ||
8593 | case 61: /* stxsd, stxssp, lxv, stxv */ | |
8594 | if ((insn2 & 3) == 0) | |
8595 | return FALSE; | |
8596 | else if ((insn2 & 3) >= 2) | |
8597 | { | |
77486630 | 8598 | insn1 = ((1ULL << 58) | (1ULL << 52) |
4a421c53 AM |
8599 | | ((44ULL | (insn2 & 3)) << 26) |
8600 | | (insn2 & (31ULL << 21))); | |
dd9b12c2 | 8601 | off = insn2 & 0xfffc; |
4a421c53 AM |
8602 | } |
8603 | else | |
8604 | { | |
77486630 | 8605 | insn1 = ((1ULL << 58) | (1ULL << 52) |
4a421c53 AM |
8606 | | ((50ULL | (insn2 & 4) | ((insn2 & 8) >> 3)) << 26) |
8607 | | (insn2 & (31ULL << 21))); | |
dd9b12c2 | 8608 | off = insn2 & 0xfff0; |
4a421c53 AM |
8609 | } |
8610 | break; | |
8611 | ||
8612 | case 56: /* lq */ | |
77486630 | 8613 | insn1 = ((1ULL << 58) | (1ULL << 52) |
4a421c53 | 8614 | | (insn2 & ((63ULL << 26) | (31ULL << 21)))); |
dd9b12c2 | 8615 | off = insn2 & 0xffff; |
4a421c53 AM |
8616 | break; |
8617 | ||
94ba9882 AM |
8618 | case 6: /* lxvp, stxvp */ |
8619 | if ((insn2 & 0xe) != 0) | |
8620 | return FALSE; | |
8621 | insn1 = ((1ULL << 58) | (1ULL << 52) | |
8622 | | ((insn2 & 1) == 0 ? 58ULL << 26 : 62ULL << 26) | |
8623 | | (insn2 & (31ULL << 21))); | |
8624 | off = insn2 & 0xfff0; | |
8625 | break; | |
8626 | ||
4a421c53 | 8627 | case 62: /* std, stq */ |
dd9b12c2 | 8628 | if ((insn2 & 1) != 0) |
4a421c53 | 8629 | return FALSE; |
77486630 | 8630 | insn1 = ((1ULL << 58) | (1ULL << 52) |
4a421c53 AM |
8631 | | ((insn2 & 2) == 0 ? 61ULL << 26 : 60ULL << 26) |
8632 | | (insn2 & (31ULL << 21))); | |
dd9b12c2 | 8633 | off = insn2 & 0xfffc; |
4a421c53 AM |
8634 | break; |
8635 | } | |
8636 | ||
77486630 | 8637 | *pinsn1 = insn1; |
4a421c53 | 8638 | *pinsn2 = (uint64_t) NOP << 32; |
dd9b12c2 | 8639 | *poff = (off ^ 0x8000) - 0x8000; |
4a421c53 AM |
8640 | return TRUE; |
8641 | } | |
8642 | ||
c5614fa4 AM |
8643 | /* Examine all relocs referencing .toc sections in order to remove |
8644 | unused .toc entries. */ | |
8645 | ||
8646 | bfd_boolean | |
33c0ec9d | 8647 | ppc64_elf_edit_toc (struct bfd_link_info *info) |
c5614fa4 AM |
8648 | { |
8649 | bfd *ibfd; | |
8650 | struct adjust_toc_info toc_inf; | |
67f0cbdb | 8651 | struct ppc_link_hash_table *htab = ppc_hash_table (info); |
c5614fa4 | 8652 | |
67f0cbdb | 8653 | htab->do_toc_opt = 1; |
c5614fa4 | 8654 | toc_inf.global_toc_syms = TRUE; |
c72f2fb2 | 8655 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next) |
c5614fa4 AM |
8656 | { |
8657 | asection *toc, *sec; | |
8658 | Elf_Internal_Shdr *symtab_hdr; | |
8659 | Elf_Internal_Sym *local_syms; | |
425b145b | 8660 | Elf_Internal_Rela *relstart, *rel, *toc_relocs; |
c5614fa4 AM |
8661 | unsigned long *skip, *drop; |
8662 | unsigned char *used; | |
8663 | unsigned char *keep, last, some_unused; | |
8664 | ||
854b41e7 AM |
8665 | if (!is_ppc64_elf (ibfd)) |
8666 | continue; | |
8667 | ||
c5614fa4 AM |
8668 | toc = bfd_get_section_by_name (ibfd, ".toc"); |
8669 | if (toc == NULL | |
92b7a70f | 8670 | || toc->size == 0 |
dbaa2011 AM |
8671 | || toc->sec_info_type == SEC_INFO_TYPE_JUST_SYMS |
8672 | || discarded_section (toc)) | |
c5614fa4 AM |
8673 | continue; |
8674 | ||
425b145b | 8675 | toc_relocs = NULL; |
c5614fa4 | 8676 | local_syms = NULL; |
0ffa91dd | 8677 | symtab_hdr = &elf_symtab_hdr (ibfd); |
c5614fa4 AM |
8678 | |
8679 | /* Look at sections dropped from the final link. */ | |
8680 | skip = NULL; | |
8681 | relstart = NULL; | |
8682 | for (sec = ibfd->sections; sec != NULL; sec = sec->next) | |
8683 | { | |
8684 | if (sec->reloc_count == 0 | |
dbaa2011 | 8685 | || !discarded_section (sec) |
c5614fa4 AM |
8686 | || get_opd_info (sec) |
8687 | || (sec->flags & SEC_ALLOC) == 0 | |
8688 | || (sec->flags & SEC_DEBUGGING) != 0) | |
8689 | continue; | |
8690 | ||
8691 | relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL, FALSE); | |
8692 | if (relstart == NULL) | |
8693 | goto error_ret; | |
8694 | ||
8695 | /* Run through the relocs to see which toc entries might be | |
8696 | unused. */ | |
8697 | for (rel = relstart; rel < relstart + sec->reloc_count; ++rel) | |
8698 | { | |
8699 | enum elf_ppc64_reloc_type r_type; | |
8700 | unsigned long r_symndx; | |
8701 | asection *sym_sec; | |
8702 | struct elf_link_hash_entry *h; | |
8703 | Elf_Internal_Sym *sym; | |
8704 | bfd_vma val; | |
8705 | ||
8706 | r_type = ELF64_R_TYPE (rel->r_info); | |
8707 | switch (r_type) | |
8708 | { | |
8709 | default: | |
8710 | continue; | |
8711 | ||
8712 | case R_PPC64_TOC16: | |
8713 | case R_PPC64_TOC16_LO: | |
8714 | case R_PPC64_TOC16_HI: | |
8715 | case R_PPC64_TOC16_HA: | |
8716 | case R_PPC64_TOC16_DS: | |
8717 | case R_PPC64_TOC16_LO_DS: | |
8718 | break; | |
8719 | } | |
8720 | ||
8721 | r_symndx = ELF64_R_SYM (rel->r_info); | |
8722 | if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, | |
8723 | r_symndx, ibfd)) | |
8724 | goto error_ret; | |
8725 | ||
8726 | if (sym_sec != toc) | |
8727 | continue; | |
8728 | ||
8729 | if (h != NULL) | |
8730 | val = h->root.u.def.value; | |
8731 | else | |
8732 | val = sym->st_value; | |
8733 | val += rel->r_addend; | |
8734 | ||
8735 | if (val >= toc->size) | |
8736 | continue; | |
8737 | ||
8738 | /* Anything in the toc ought to be aligned to 8 bytes. | |
8739 | If not, don't mark as unused. */ | |
8740 | if (val & 7) | |
8741 | continue; | |
8742 | ||
8743 | if (skip == NULL) | |
8744 | { | |
854b41e7 | 8745 | skip = bfd_zmalloc (sizeof (*skip) * (toc->size + 15) / 8); |
c5614fa4 AM |
8746 | if (skip == NULL) |
8747 | goto error_ret; | |
8748 | } | |
8749 | ||
ba761f19 | 8750 | skip[val >> 3] = ref_from_discarded; |
c5614fa4 AM |
8751 | } |
8752 | ||
8753 | if (elf_section_data (sec)->relocs != relstart) | |
8754 | free (relstart); | |
8755 | } | |
8756 | ||
ba761f19 AM |
8757 | /* For largetoc loads of address constants, we can convert |
8758 | . addis rx,2,addr@got@ha | |
8759 | . ld ry,addr@got@l(rx) | |
8760 | to | |
8761 | . addis rx,2,addr@toc@ha | |
8762 | . addi ry,rx,addr@toc@l | |
8763 | when addr is within 2G of the toc pointer. This then means | |
8764 | that the word storing "addr" in the toc is no longer needed. */ | |
68ffbac6 | 8765 | |
ba761f19 AM |
8766 | if (!ppc64_elf_tdata (ibfd)->has_small_toc_reloc |
8767 | && toc->output_section->rawsize < (bfd_vma) 1 << 31 | |
8768 | && toc->reloc_count != 0) | |
8769 | { | |
8770 | /* Read toc relocs. */ | |
425b145b AM |
8771 | toc_relocs = _bfd_elf_link_read_relocs (ibfd, toc, NULL, NULL, |
8772 | info->keep_memory); | |
8773 | if (toc_relocs == NULL) | |
ba761f19 AM |
8774 | goto error_ret; |
8775 | ||
425b145b | 8776 | for (rel = toc_relocs; rel < toc_relocs + toc->reloc_count; ++rel) |
ba761f19 AM |
8777 | { |
8778 | enum elf_ppc64_reloc_type r_type; | |
8779 | unsigned long r_symndx; | |
8780 | asection *sym_sec; | |
8781 | struct elf_link_hash_entry *h; | |
8782 | Elf_Internal_Sym *sym; | |
8783 | bfd_vma val, addr; | |
8784 | ||
8785 | r_type = ELF64_R_TYPE (rel->r_info); | |
8786 | if (r_type != R_PPC64_ADDR64) | |
8787 | continue; | |
8788 | ||
8789 | r_symndx = ELF64_R_SYM (rel->r_info); | |
8790 | if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, | |
8791 | r_symndx, ibfd)) | |
8792 | goto error_ret; | |
8793 | ||
425b145b | 8794 | if (sym_sec == NULL |
c27b8c2a | 8795 | || sym_sec->output_section == NULL |
dbaa2011 | 8796 | || discarded_section (sym_sec)) |
425b145b AM |
8797 | continue; |
8798 | ||
afe397ea | 8799 | if (!SYMBOL_REFERENCES_LOCAL (info, h)) |
ba761f19 AM |
8800 | continue; |
8801 | ||
8802 | if (h != NULL) | |
bddc25c9 AM |
8803 | { |
8804 | if (h->type == STT_GNU_IFUNC) | |
8805 | continue; | |
8806 | val = h->root.u.def.value; | |
8807 | } | |
ba761f19 | 8808 | else |
bddc25c9 AM |
8809 | { |
8810 | if (ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC) | |
8811 | continue; | |
8812 | val = sym->st_value; | |
8813 | } | |
ba761f19 AM |
8814 | val += rel->r_addend; |
8815 | val += sym_sec->output_section->vma + sym_sec->output_offset; | |
8816 | ||
8817 | /* We don't yet know the exact toc pointer value, but we | |
8818 | know it will be somewhere in the toc section. Don't | |
8819 | optimize if the difference from any possible toc | |
8820 | pointer is outside [ff..f80008000, 7fff7fff]. */ | |
8821 | addr = toc->output_section->vma + TOC_BASE_OFF; | |
8822 | if (val - addr + (bfd_vma) 0x80008000 >= (bfd_vma) 1 << 32) | |
8823 | continue; | |
8824 | ||
8825 | addr = toc->output_section->vma + toc->output_section->rawsize; | |
8826 | if (val - addr + (bfd_vma) 0x80008000 >= (bfd_vma) 1 << 32) | |
8827 | continue; | |
8828 | ||
8829 | if (skip == NULL) | |
8830 | { | |
8831 | skip = bfd_zmalloc (sizeof (*skip) * (toc->size + 15) / 8); | |
8832 | if (skip == NULL) | |
8833 | goto error_ret; | |
8834 | } | |
8835 | ||
8836 | skip[rel->r_offset >> 3] | |
425b145b | 8837 | |= can_optimize | ((rel - toc_relocs) << 2); |
ba761f19 | 8838 | } |
ba761f19 AM |
8839 | } |
8840 | ||
c5614fa4 AM |
8841 | if (skip == NULL) |
8842 | continue; | |
8843 | ||
8844 | used = bfd_zmalloc (sizeof (*used) * (toc->size + 7) / 8); | |
8845 | if (used == NULL) | |
8846 | { | |
8847 | error_ret: | |
c9594989 | 8848 | if (symtab_hdr->contents != (unsigned char *) local_syms) |
c5614fa4 AM |
8849 | free (local_syms); |
8850 | if (sec != NULL | |
c5614fa4 AM |
8851 | && elf_section_data (sec)->relocs != relstart) |
8852 | free (relstart); | |
c9594989 | 8853 | if (elf_section_data (toc)->relocs != toc_relocs) |
425b145b | 8854 | free (toc_relocs); |
c9594989 | 8855 | free (skip); |
c5614fa4 AM |
8856 | return FALSE; |
8857 | } | |
8858 | ||
30038c59 AM |
8859 | /* Now check all kept sections that might reference the toc. |
8860 | Check the toc itself last. */ | |
8861 | for (sec = (ibfd->sections == toc && toc->next ? toc->next | |
8862 | : ibfd->sections); | |
c5614fa4 | 8863 | sec != NULL; |
c5614fa4 | 8864 | sec = (sec == toc ? NULL |
c5614fa4 | 8865 | : sec->next == NULL ? toc |
30038c59 | 8866 | : sec->next == toc && toc->next ? toc->next |
c5614fa4 AM |
8867 | : sec->next)) |
8868 | { | |
8869 | int repeat; | |
8870 | ||
8871 | if (sec->reloc_count == 0 | |
dbaa2011 | 8872 | || discarded_section (sec) |
c5614fa4 AM |
8873 | || get_opd_info (sec) |
8874 | || (sec->flags & SEC_ALLOC) == 0 | |
8875 | || (sec->flags & SEC_DEBUGGING) != 0) | |
8876 | continue; | |
8877 | ||
854b41e7 AM |
8878 | relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL, |
8879 | info->keep_memory); | |
c5614fa4 | 8880 | if (relstart == NULL) |
2915c55b JK |
8881 | { |
8882 | free (used); | |
8883 | goto error_ret; | |
8884 | } | |
c5614fa4 AM |
8885 | |
8886 | /* Mark toc entries referenced as used. */ | |
c5614fa4 | 8887 | do |
d4f1ee75 AM |
8888 | { |
8889 | repeat = 0; | |
8890 | for (rel = relstart; rel < relstart + sec->reloc_count; ++rel) | |
8891 | { | |
8892 | enum elf_ppc64_reloc_type r_type; | |
8893 | unsigned long r_symndx; | |
8894 | asection *sym_sec; | |
8895 | struct elf_link_hash_entry *h; | |
8896 | Elf_Internal_Sym *sym; | |
8897 | bfd_vma val; | |
98528052 | 8898 | |
d4f1ee75 | 8899 | r_type = ELF64_R_TYPE (rel->r_info); |
d4f1ee75 AM |
8900 | switch (r_type) |
8901 | { | |
8902 | case R_PPC64_TOC16: | |
8903 | case R_PPC64_TOC16_LO: | |
8904 | case R_PPC64_TOC16_HI: | |
8905 | case R_PPC64_TOC16_HA: | |
8906 | case R_PPC64_TOC16_DS: | |
8907 | case R_PPC64_TOC16_LO_DS: | |
8908 | /* In case we're taking addresses of toc entries. */ | |
8909 | case R_PPC64_ADDR64: | |
8910 | break; | |
c5614fa4 | 8911 | |
d4f1ee75 AM |
8912 | default: |
8913 | continue; | |
8914 | } | |
c5614fa4 | 8915 | |
d4f1ee75 AM |
8916 | r_symndx = ELF64_R_SYM (rel->r_info); |
8917 | if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, | |
8918 | r_symndx, ibfd)) | |
8919 | { | |
8920 | free (used); | |
8921 | goto error_ret; | |
8922 | } | |
c5614fa4 | 8923 | |
d4f1ee75 AM |
8924 | if (sym_sec != toc) |
8925 | continue; | |
c5614fa4 | 8926 | |
d4f1ee75 AM |
8927 | if (h != NULL) |
8928 | val = h->root.u.def.value; | |
8929 | else | |
8930 | val = sym->st_value; | |
8931 | val += rel->r_addend; | |
ba761f19 | 8932 | |
d4f1ee75 AM |
8933 | if (val >= toc->size) |
8934 | continue; | |
ba761f19 | 8935 | |
d4f1ee75 AM |
8936 | if ((skip[val >> 3] & can_optimize) != 0) |
8937 | { | |
8938 | bfd_vma off; | |
8939 | unsigned char opc; | |
8940 | ||
8941 | switch (r_type) | |
8942 | { | |
8943 | case R_PPC64_TOC16_HA: | |
ba761f19 | 8944 | break; |
ba761f19 | 8945 | |
d4f1ee75 AM |
8946 | case R_PPC64_TOC16_LO_DS: |
8947 | off = rel->r_offset; | |
8948 | off += (bfd_big_endian (ibfd) ? -2 : 3); | |
8949 | if (!bfd_get_section_contents (ibfd, sec, &opc, | |
8950 | off, 1)) | |
8951 | { | |
8952 | free (used); | |
8953 | goto error_ret; | |
8954 | } | |
8955 | if ((opc & (0x3f << 2)) == (58u << 2)) | |
8956 | break; | |
1a0670f3 | 8957 | /* Fall through. */ |
ba761f19 | 8958 | |
d4f1ee75 AM |
8959 | default: |
8960 | /* Wrong sort of reloc, or not a ld. We may | |
8961 | as well clear ref_from_discarded too. */ | |
8962 | skip[val >> 3] = 0; | |
8963 | } | |
8964 | } | |
8965 | ||
8966 | if (sec != toc) | |
8967 | used[val >> 3] = 1; | |
8968 | /* For the toc section, we only mark as used if this | |
8969 | entry itself isn't unused. */ | |
8970 | else if ((used[rel->r_offset >> 3] | |
8971 | || !(skip[rel->r_offset >> 3] & ref_from_discarded)) | |
8972 | && !used[val >> 3]) | |
8973 | { | |
8974 | /* Do all the relocs again, to catch reference | |
8975 | chains. */ | |
8976 | repeat = 1; | |
8977 | used[val >> 3] = 1; | |
8978 | } | |
8979 | } | |
8980 | } | |
c5614fa4 | 8981 | while (repeat); |
854b41e7 AM |
8982 | |
8983 | if (elf_section_data (sec)->relocs != relstart) | |
8984 | free (relstart); | |
c5614fa4 AM |
8985 | } |
8986 | ||
8987 | /* Merge the used and skip arrays. Assume that TOC | |
8988 | doublewords not appearing as either used or unused belong | |
de194d85 | 8989 | to an entry more than one doubleword in size. */ |
c5614fa4 AM |
8990 | for (drop = skip, keep = used, last = 0, some_unused = 0; |
8991 | drop < skip + (toc->size + 7) / 8; | |
8992 | ++drop, ++keep) | |
8993 | { | |
8994 | if (*keep) | |
8995 | { | |
ba761f19 AM |
8996 | *drop &= ~ref_from_discarded; |
8997 | if ((*drop & can_optimize) != 0) | |
8998 | some_unused = 1; | |
c5614fa4 AM |
8999 | last = 0; |
9000 | } | |
b140b010 | 9001 | else if ((*drop & ref_from_discarded) != 0) |
c5614fa4 AM |
9002 | { |
9003 | some_unused = 1; | |
ba761f19 | 9004 | last = ref_from_discarded; |
c5614fa4 AM |
9005 | } |
9006 | else | |
9007 | *drop = last; | |
9008 | } | |
9009 | ||
9010 | free (used); | |
9011 | ||
9012 | if (some_unused) | |
9013 | { | |
9014 | bfd_byte *contents, *src; | |
9015 | unsigned long off; | |
d62b3684 | 9016 | Elf_Internal_Sym *sym; |
ba761f19 | 9017 | bfd_boolean local_toc_syms = FALSE; |
c5614fa4 AM |
9018 | |
9019 | /* Shuffle the toc contents, and at the same time convert the | |
9020 | skip array from booleans into offsets. */ | |
9021 | if (!bfd_malloc_and_get_section (ibfd, toc, &contents)) | |
9022 | goto error_ret; | |
9023 | ||
9024 | elf_section_data (toc)->this_hdr.contents = contents; | |
9025 | ||
9026 | for (src = contents, off = 0, drop = skip; | |
9027 | src < contents + toc->size; | |
9028 | src += 8, ++drop) | |
9029 | { | |
ba761f19 AM |
9030 | if ((*drop & (can_optimize | ref_from_discarded)) != 0) |
9031 | off += 8; | |
c5614fa4 AM |
9032 | else if (off != 0) |
9033 | { | |
9034 | *drop = off; | |
9035 | memcpy (src - off, src, 8); | |
9036 | } | |
9037 | } | |
854b41e7 | 9038 | *drop = off; |
c5614fa4 AM |
9039 | toc->rawsize = toc->size; |
9040 | toc->size = src - contents - off; | |
9041 | ||
ba761f19 AM |
9042 | /* Adjust addends for relocs against the toc section sym, |
9043 | and optimize any accesses we can. */ | |
c5614fa4 AM |
9044 | for (sec = ibfd->sections; sec != NULL; sec = sec->next) |
9045 | { | |
9046 | if (sec->reloc_count == 0 | |
dbaa2011 | 9047 | || discarded_section (sec)) |
c5614fa4 AM |
9048 | continue; |
9049 | ||
9050 | relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL, | |
854b41e7 | 9051 | info->keep_memory); |
c5614fa4 AM |
9052 | if (relstart == NULL) |
9053 | goto error_ret; | |
9054 | ||
9055 | for (rel = relstart; rel < relstart + sec->reloc_count; ++rel) | |
9056 | { | |
9057 | enum elf_ppc64_reloc_type r_type; | |
9058 | unsigned long r_symndx; | |
9059 | asection *sym_sec; | |
9060 | struct elf_link_hash_entry *h; | |
854b41e7 | 9061 | bfd_vma val; |
c5614fa4 AM |
9062 | |
9063 | r_type = ELF64_R_TYPE (rel->r_info); | |
9064 | switch (r_type) | |
9065 | { | |
9066 | default: | |
9067 | continue; | |
9068 | ||
9069 | case R_PPC64_TOC16: | |
9070 | case R_PPC64_TOC16_LO: | |
9071 | case R_PPC64_TOC16_HI: | |
9072 | case R_PPC64_TOC16_HA: | |
9073 | case R_PPC64_TOC16_DS: | |
9074 | case R_PPC64_TOC16_LO_DS: | |
9075 | case R_PPC64_ADDR64: | |
9076 | break; | |
9077 | } | |
9078 | ||
9079 | r_symndx = ELF64_R_SYM (rel->r_info); | |
9080 | if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, | |
9081 | r_symndx, ibfd)) | |
9082 | goto error_ret; | |
9083 | ||
ba761f19 | 9084 | if (sym_sec != toc) |
c5614fa4 AM |
9085 | continue; |
9086 | ||
ba761f19 AM |
9087 | if (h != NULL) |
9088 | val = h->root.u.def.value; | |
9089 | else | |
9090 | { | |
9091 | val = sym->st_value; | |
9092 | if (val != 0) | |
9093 | local_toc_syms = TRUE; | |
9094 | } | |
9095 | ||
9096 | val += rel->r_addend; | |
854b41e7 AM |
9097 | |
9098 | if (val > toc->rawsize) | |
9099 | val = toc->rawsize; | |
ba761f19 AM |
9100 | else if ((skip[val >> 3] & ref_from_discarded) != 0) |
9101 | continue; | |
9102 | else if ((skip[val >> 3] & can_optimize) != 0) | |
9103 | { | |
9104 | Elf_Internal_Rela *tocrel | |
425b145b | 9105 | = toc_relocs + (skip[val >> 3] >> 2); |
ba761f19 AM |
9106 | unsigned long tsym = ELF64_R_SYM (tocrel->r_info); |
9107 | ||
9108 | switch (r_type) | |
9109 | { | |
9110 | case R_PPC64_TOC16_HA: | |
9111 | rel->r_info = ELF64_R_INFO (tsym, R_PPC64_TOC16_HA); | |
9112 | break; | |
9113 | ||
9114 | case R_PPC64_TOC16_LO_DS: | |
9115 | rel->r_info = ELF64_R_INFO (tsym, R_PPC64_LO_DS_OPT); | |
9116 | break; | |
9117 | ||
9118 | default: | |
28942f62 AM |
9119 | if (!ppc64_elf_howto_table[R_PPC64_ADDR32]) |
9120 | ppc_howto_init (); | |
b140b010 | 9121 | info->callbacks->einfo |
695344c0 | 9122 | /* xgettext:c-format */ |
174d0a74 | 9123 | (_("%H: %s references " |
b140b010 AM |
9124 | "optimized away TOC entry\n"), |
9125 | ibfd, sec, rel->r_offset, | |
9126 | ppc64_elf_howto_table[r_type]->name); | |
9127 | bfd_set_error (bfd_error_bad_value); | |
9128 | goto error_ret; | |
ba761f19 AM |
9129 | } |
9130 | rel->r_addend = tocrel->r_addend; | |
9131 | elf_section_data (sec)->relocs = relstart; | |
9132 | continue; | |
9133 | } | |
9134 | ||
9135 | if (h != NULL || sym->st_value != 0) | |
9136 | continue; | |
854b41e7 AM |
9137 | |
9138 | rel->r_addend -= skip[val >> 3]; | |
9139 | elf_section_data (sec)->relocs = relstart; | |
c5614fa4 | 9140 | } |
854b41e7 AM |
9141 | |
9142 | if (elf_section_data (sec)->relocs != relstart) | |
9143 | free (relstart); | |
c5614fa4 AM |
9144 | } |
9145 | ||
9146 | /* We shouldn't have local or global symbols defined in the TOC, | |
9147 | but handle them anyway. */ | |
df22d223 AM |
9148 | if (local_syms != NULL) |
9149 | for (sym = local_syms; | |
9150 | sym < local_syms + symtab_hdr->sh_info; | |
9151 | ++sym) | |
9152 | if (sym->st_value != 0 | |
9153 | && bfd_section_from_elf_index (ibfd, sym->st_shndx) == toc) | |
9154 | { | |
9155 | unsigned long i; | |
854b41e7 | 9156 | |
df22d223 AM |
9157 | if (sym->st_value > toc->rawsize) |
9158 | i = toc->rawsize >> 3; | |
9159 | else | |
9160 | i = sym->st_value >> 3; | |
854b41e7 | 9161 | |
df22d223 AM |
9162 | if ((skip[i] & (ref_from_discarded | can_optimize)) != 0) |
9163 | { | |
9164 | if (local_toc_syms) | |
4eca0228 | 9165 | _bfd_error_handler |
df22d223 AM |
9166 | (_("%s defined on removed toc entry"), |
9167 | bfd_elf_sym_name (ibfd, symtab_hdr, sym, NULL)); | |
9168 | do | |
9169 | ++i; | |
9170 | while ((skip[i] & (ref_from_discarded | can_optimize))); | |
9171 | sym->st_value = (bfd_vma) i << 3; | |
9172 | } | |
d62b3684 | 9173 | |
df22d223 AM |
9174 | sym->st_value -= skip[i]; |
9175 | symtab_hdr->contents = (unsigned char *) local_syms; | |
9176 | } | |
c5614fa4 | 9177 | |
854b41e7 | 9178 | /* Adjust any global syms defined in this toc input section. */ |
c5614fa4 AM |
9179 | if (toc_inf.global_toc_syms) |
9180 | { | |
9181 | toc_inf.toc = toc; | |
9182 | toc_inf.skip = skip; | |
9183 | toc_inf.global_toc_syms = FALSE; | |
9184 | elf_link_hash_traverse (elf_hash_table (info), adjust_toc_syms, | |
9185 | &toc_inf); | |
9186 | } | |
854b41e7 AM |
9187 | |
9188 | if (toc->reloc_count != 0) | |
9189 | { | |
d4730f92 | 9190 | Elf_Internal_Shdr *rel_hdr; |
854b41e7 AM |
9191 | Elf_Internal_Rela *wrel; |
9192 | bfd_size_type sz; | |
9193 | ||
854b41e7 | 9194 | /* Remove unused toc relocs, and adjust those we keep. */ |
28be611c AM |
9195 | if (toc_relocs == NULL) |
9196 | toc_relocs = _bfd_elf_link_read_relocs (ibfd, toc, NULL, NULL, | |
9197 | info->keep_memory); | |
9198 | if (toc_relocs == NULL) | |
9199 | goto error_ret; | |
9200 | ||
425b145b AM |
9201 | wrel = toc_relocs; |
9202 | for (rel = toc_relocs; rel < toc_relocs + toc->reloc_count; ++rel) | |
ba761f19 AM |
9203 | if ((skip[rel->r_offset >> 3] |
9204 | & (ref_from_discarded | can_optimize)) == 0) | |
854b41e7 AM |
9205 | { |
9206 | wrel->r_offset = rel->r_offset - skip[rel->r_offset >> 3]; | |
9207 | wrel->r_info = rel->r_info; | |
9208 | wrel->r_addend = rel->r_addend; | |
9209 | ++wrel; | |
9210 | } | |
9211 | else if (!dec_dynrel_count (rel->r_info, toc, info, | |
9212 | &local_syms, NULL, NULL)) | |
9213 | goto error_ret; | |
9214 | ||
425b145b AM |
9215 | elf_section_data (toc)->relocs = toc_relocs; |
9216 | toc->reloc_count = wrel - toc_relocs; | |
d4730f92 BS |
9217 | rel_hdr = _bfd_elf_single_rel_hdr (toc); |
9218 | sz = rel_hdr->sh_entsize; | |
9219 | rel_hdr->sh_size = toc->reloc_count * sz; | |
854b41e7 | 9220 | } |
c5614fa4 | 9221 | } |
c9594989 | 9222 | else if (elf_section_data (toc)->relocs != toc_relocs) |
425b145b | 9223 | free (toc_relocs); |
c5614fa4 AM |
9224 | |
9225 | if (local_syms != NULL | |
9226 | && symtab_hdr->contents != (unsigned char *) local_syms) | |
9227 | { | |
9228 | if (!info->keep_memory) | |
9229 | free (local_syms); | |
9230 | else | |
9231 | symtab_hdr->contents = (unsigned char *) local_syms; | |
9232 | } | |
9233 | free (skip); | |
9234 | } | |
9235 | ||
066f4018 | 9236 | /* Look for cases where we can change an indirect GOT access to |
4a421c53 AM |
9237 | a GOT relative or PC relative access, possibly reducing the |
9238 | number of GOT entries. */ | |
066f4018 AM |
9239 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next) |
9240 | { | |
9241 | asection *sec; | |
9242 | Elf_Internal_Shdr *symtab_hdr; | |
9243 | Elf_Internal_Sym *local_syms; | |
9244 | Elf_Internal_Rela *relstart, *rel; | |
9245 | bfd_vma got; | |
9246 | ||
9247 | if (!is_ppc64_elf (ibfd)) | |
9248 | continue; | |
9249 | ||
903b777d | 9250 | if (!ppc64_elf_tdata (ibfd)->has_optrel) |
066f4018 AM |
9251 | continue; |
9252 | ||
9253 | sec = ppc64_elf_tdata (ibfd)->got; | |
903b777d AM |
9254 | got = 0; |
9255 | if (sec != NULL) | |
9256 | got = sec->output_section->vma + sec->output_offset + 0x8000; | |
066f4018 AM |
9257 | |
9258 | local_syms = NULL; | |
9259 | symtab_hdr = &elf_symtab_hdr (ibfd); | |
9260 | ||
9261 | for (sec = ibfd->sections; sec != NULL; sec = sec->next) | |
9262 | { | |
9263 | if (sec->reloc_count == 0 | |
903b777d | 9264 | || !ppc64_elf_section_data (sec)->has_optrel |
066f4018 AM |
9265 | || discarded_section (sec)) |
9266 | continue; | |
9267 | ||
9268 | relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL, | |
9269 | info->keep_memory); | |
9270 | if (relstart == NULL) | |
9271 | { | |
9272 | got_error_ret: | |
c9594989 | 9273 | if (symtab_hdr->contents != (unsigned char *) local_syms) |
066f4018 AM |
9274 | free (local_syms); |
9275 | if (sec != NULL | |
066f4018 AM |
9276 | && elf_section_data (sec)->relocs != relstart) |
9277 | free (relstart); | |
9278 | return FALSE; | |
9279 | } | |
9280 | ||
9281 | for (rel = relstart; rel < relstart + sec->reloc_count; ++rel) | |
9282 | { | |
9283 | enum elf_ppc64_reloc_type r_type; | |
9284 | unsigned long r_symndx; | |
9285 | Elf_Internal_Sym *sym; | |
9286 | asection *sym_sec; | |
9287 | struct elf_link_hash_entry *h; | |
9288 | struct got_entry *ent; | |
133a1f60 | 9289 | bfd_vma val, pc; |
4a421c53 | 9290 | unsigned char buf[8]; |
066f4018 | 9291 | unsigned int insn; |
903b777d | 9292 | enum {no_check, check_lo, check_ha} insn_check; |
066f4018 AM |
9293 | |
9294 | r_type = ELF64_R_TYPE (rel->r_info); | |
903b777d AM |
9295 | switch (r_type) |
9296 | { | |
9297 | default: | |
9298 | insn_check = no_check; | |
9299 | break; | |
9300 | ||
9301 | case R_PPC64_PLT16_HA: | |
9302 | case R_PPC64_GOT_TLSLD16_HA: | |
9303 | case R_PPC64_GOT_TLSGD16_HA: | |
9304 | case R_PPC64_GOT_TPREL16_HA: | |
9305 | case R_PPC64_GOT_DTPREL16_HA: | |
9306 | case R_PPC64_GOT16_HA: | |
9307 | case R_PPC64_TOC16_HA: | |
9308 | insn_check = check_ha; | |
9309 | break; | |
9310 | ||
9311 | case R_PPC64_PLT16_LO: | |
9312 | case R_PPC64_PLT16_LO_DS: | |
9313 | case R_PPC64_GOT_TLSLD16_LO: | |
9314 | case R_PPC64_GOT_TLSGD16_LO: | |
9315 | case R_PPC64_GOT_TPREL16_LO_DS: | |
9316 | case R_PPC64_GOT_DTPREL16_LO_DS: | |
9317 | case R_PPC64_GOT16_LO: | |
9318 | case R_PPC64_GOT16_LO_DS: | |
9319 | case R_PPC64_TOC16_LO: | |
9320 | case R_PPC64_TOC16_LO_DS: | |
9321 | insn_check = check_lo; | |
9322 | break; | |
9323 | } | |
9324 | ||
9325 | if (insn_check != no_check) | |
9326 | { | |
9327 | bfd_vma off = rel->r_offset & ~3; | |
9328 | ||
9329 | if (!bfd_get_section_contents (ibfd, sec, buf, off, 4)) | |
9330 | goto got_error_ret; | |
9331 | ||
9332 | insn = bfd_get_32 (ibfd, buf); | |
9333 | if (insn_check == check_lo | |
9334 | ? !ok_lo_toc_insn (insn, r_type) | |
2365f8d7 | 9335 | : ((insn & ((0x3fu << 26) | 0x1f << 16)) |
903b777d AM |
9336 | != ((15u << 26) | (2 << 16)) /* addis rt,2,imm */)) |
9337 | { | |
9338 | char str[12]; | |
9339 | ||
9340 | ppc64_elf_tdata (ibfd)->unexpected_toc_insn = 1; | |
9341 | sprintf (str, "%#08x", insn); | |
9342 | info->callbacks->einfo | |
9343 | /* xgettext:c-format */ | |
9344 | (_("%H: got/toc optimization is not supported for" | |
9345 | " %s instruction\n"), | |
9346 | ibfd, sec, rel->r_offset & ~3, str); | |
9347 | continue; | |
9348 | } | |
9349 | } | |
9350 | ||
066f4018 AM |
9351 | switch (r_type) |
9352 | { | |
bb22a418 AM |
9353 | /* Note that we don't delete GOT entries for |
9354 | R_PPC64_GOT16_DS since we'd need a lot more | |
9355 | analysis. For starters, the preliminary layout is | |
9356 | before the GOT, PLT, dynamic sections and stubs are | |
9357 | laid out. Then we'd need to allow for changes in | |
9358 | distance between sections caused by alignment. */ | |
066f4018 AM |
9359 | default: |
9360 | continue; | |
9361 | ||
066f4018 AM |
9362 | case R_PPC64_GOT16_HA: |
9363 | case R_PPC64_GOT16_LO_DS: | |
4a421c53 | 9364 | case R_PPC64_GOT_PCREL34: |
066f4018 AM |
9365 | break; |
9366 | } | |
9367 | ||
9368 | r_symndx = ELF64_R_SYM (rel->r_info); | |
9369 | if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, | |
9370 | r_symndx, ibfd)) | |
9371 | goto got_error_ret; | |
9372 | ||
6d5554a6 AM |
9373 | if (sym_sec == NULL |
9374 | || sym_sec->output_section == NULL | |
9375 | || discarded_section (sym_sec)) | |
9376 | continue; | |
9377 | ||
06507dab AM |
9378 | if ((h ? h->type : ELF_ST_TYPE (sym->st_info)) == STT_GNU_IFUNC) |
9379 | continue; | |
9380 | ||
066f4018 AM |
9381 | if (!SYMBOL_REFERENCES_LOCAL (info, h)) |
9382 | continue; | |
9383 | ||
9384 | if (h != NULL) | |
9385 | val = h->root.u.def.value; | |
9386 | else | |
9387 | val = sym->st_value; | |
133a1f60 | 9388 | val += rel->r_addend; |
066f4018 AM |
9389 | val += sym_sec->output_section->vma + sym_sec->output_offset; |
9390 | ||
bb22a418 AM |
9391 | /* Fudge factor to allow for the fact that the preliminary layout |
9392 | isn't exact. Reduce limits by this factor. */ | |
9393 | #define LIMIT_ADJUST(LIMIT) ((LIMIT) - (LIMIT) / 16) | |
9394 | ||
066f4018 AM |
9395 | switch (r_type) |
9396 | { | |
9397 | default: | |
9398 | continue; | |
9399 | ||
066f4018 | 9400 | case R_PPC64_GOT16_HA: |
bb22a418 AM |
9401 | if (val - got + LIMIT_ADJUST (0x80008000ULL) |
9402 | >= LIMIT_ADJUST (0x100000000ULL)) | |
066f4018 AM |
9403 | continue; |
9404 | ||
9405 | if (!bfd_get_section_contents (ibfd, sec, buf, | |
9406 | rel->r_offset & ~3, 4)) | |
9407 | goto got_error_ret; | |
9408 | insn = bfd_get_32 (ibfd, buf); | |
2365f8d7 | 9409 | if (((insn & ((0x3fu << 26) | 0x1f << 16)) |
066f4018 AM |
9410 | != ((15u << 26) | (2 << 16)) /* addis rt,2,imm */)) |
9411 | continue; | |
9412 | break; | |
9413 | ||
9414 | case R_PPC64_GOT16_LO_DS: | |
bb22a418 AM |
9415 | if (val - got + LIMIT_ADJUST (0x80008000ULL) |
9416 | >= LIMIT_ADJUST (0x100000000ULL)) | |
066f4018 AM |
9417 | continue; |
9418 | if (!bfd_get_section_contents (ibfd, sec, buf, | |
9419 | rel->r_offset & ~3, 4)) | |
9420 | goto got_error_ret; | |
9421 | insn = bfd_get_32 (ibfd, buf); | |
2365f8d7 | 9422 | if ((insn & (0x3fu << 26 | 0x3)) != 58u << 26 /* ld */) |
066f4018 AM |
9423 | continue; |
9424 | break; | |
4a421c53 AM |
9425 | |
9426 | case R_PPC64_GOT_PCREL34: | |
9427 | pc = rel->r_offset; | |
9428 | pc += sec->output_section->vma + sec->output_offset; | |
bb22a418 AM |
9429 | if (val - pc + LIMIT_ADJUST (1ULL << 33) |
9430 | >= LIMIT_ADJUST (1ULL << 34)) | |
4a421c53 AM |
9431 | continue; |
9432 | if (!bfd_get_section_contents (ibfd, sec, buf, | |
9433 | rel->r_offset & ~3, 8)) | |
9434 | goto got_error_ret; | |
9435 | insn = bfd_get_32 (ibfd, buf); | |
9436 | if ((insn & (-1u << 18)) != ((1u << 26) | (1u << 20))) | |
9437 | continue; | |
9438 | insn = bfd_get_32 (ibfd, buf + 4); | |
2365f8d7 | 9439 | if ((insn & (0x3fu << 26)) != 57u << 26) |
4a421c53 AM |
9440 | continue; |
9441 | break; | |
066f4018 | 9442 | } |
bb22a418 | 9443 | #undef LIMIT_ADJUST |
066f4018 AM |
9444 | |
9445 | if (h != NULL) | |
9446 | ent = h->got.glist; | |
9447 | else | |
9448 | { | |
9449 | struct got_entry **local_got_ents = elf_local_got_ents (ibfd); | |
9450 | ent = local_got_ents[r_symndx]; | |
9451 | } | |
9452 | for (; ent != NULL; ent = ent->next) | |
133a1f60 | 9453 | if (ent->addend == rel->r_addend |
066f4018 AM |
9454 | && ent->owner == ibfd |
9455 | && ent->tls_type == 0) | |
9456 | break; | |
9457 | BFD_ASSERT (ent && ent->got.refcount > 0); | |
9458 | ent->got.refcount -= 1; | |
9459 | } | |
9460 | ||
9461 | if (elf_section_data (sec)->relocs != relstart) | |
9462 | free (relstart); | |
9463 | } | |
9464 | ||
9465 | if (local_syms != NULL | |
9466 | && symtab_hdr->contents != (unsigned char *) local_syms) | |
9467 | { | |
9468 | if (!info->keep_memory) | |
9469 | free (local_syms); | |
9470 | else | |
9471 | symtab_hdr->contents = (unsigned char *) local_syms; | |
9472 | } | |
9473 | } | |
9474 | ||
c5614fa4 AM |
9475 | return TRUE; |
9476 | } | |
9477 | ||
1bbe0902 AM |
9478 | /* Return true iff input section I references the TOC using |
9479 | instructions limited to +/-32k offsets. */ | |
9480 | ||
9481 | bfd_boolean | |
9482 | ppc64_elf_has_small_toc_reloc (asection *i) | |
9483 | { | |
9484 | return (is_ppc64_elf (i->owner) | |
9485 | && ppc64_elf_tdata (i->owner)->has_small_toc_reloc); | |
9486 | } | |
9487 | ||
927be08e AM |
9488 | /* Allocate space for one GOT entry. */ |
9489 | ||
9490 | static void | |
9491 | allocate_got (struct elf_link_hash_entry *h, | |
9492 | struct bfd_link_info *info, | |
9493 | struct got_entry *gent) | |
9494 | { | |
9495 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
ed7007c1 | 9496 | struct ppc_link_hash_entry *eh = ppc_elf_hash_entry (h); |
927be08e AM |
9497 | int entsize = (gent->tls_type & eh->tls_mask & (TLS_GD | TLS_LD) |
9498 | ? 16 : 8); | |
9499 | int rentsize = (gent->tls_type & eh->tls_mask & TLS_GD | |
9500 | ? 2 : 1) * sizeof (Elf64_External_Rela); | |
9501 | asection *got = ppc64_elf_tdata (gent->owner)->got; | |
9502 | ||
9503 | gent->got.offset = got->size; | |
9504 | got->size += entsize; | |
9505 | ||
19e08130 | 9506 | if (h->type == STT_GNU_IFUNC) |
927be08e | 9507 | { |
33e44f2e | 9508 | htab->elf.irelplt->size += rentsize; |
19e08130 | 9509 | htab->got_reli_size += rentsize; |
927be08e | 9510 | } |
f15d0b54 | 9511 | else if (((bfd_link_pic (info) |
f749f26e | 9512 | && !(gent->tls_type != 0 |
f15d0b54 AM |
9513 | && bfd_link_executable (info) |
9514 | && SYMBOL_REFERENCES_LOCAL (info, h))) | |
f0158f44 AM |
9515 | || (htab->elf.dynamic_sections_created |
9516 | && h->dynindx != -1 | |
9517 | && !SYMBOL_REFERENCES_LOCAL (info, h))) | |
21d68fcd | 9518 | && !UNDEFWEAK_NO_DYNAMIC_RELOC (info, h)) |
927be08e | 9519 | { |
19e08130 | 9520 | asection *relgot = ppc64_elf_tdata (gent->owner)->relgot; |
927be08e | 9521 | relgot->size += rentsize; |
927be08e AM |
9522 | } |
9523 | } | |
9524 | ||
7865406b AM |
9525 | /* This function merges got entries in the same toc group. */ |
9526 | ||
9527 | static void | |
9528 | merge_got_entries (struct got_entry **pent) | |
9529 | { | |
9530 | struct got_entry *ent, *ent2; | |
9531 | ||
9532 | for (ent = *pent; ent != NULL; ent = ent->next) | |
9533 | if (!ent->is_indirect) | |
9534 | for (ent2 = ent->next; ent2 != NULL; ent2 = ent2->next) | |
9535 | if (!ent2->is_indirect | |
9536 | && ent2->addend == ent->addend | |
9537 | && ent2->tls_type == ent->tls_type | |
9538 | && elf_gp (ent2->owner) == elf_gp (ent->owner)) | |
9539 | { | |
9540 | ent2->is_indirect = TRUE; | |
9541 | ent2->got.ent = ent; | |
9542 | } | |
9543 | } | |
9544 | ||
46434633 | 9545 | /* If H is undefined, make it dynamic if that makes sense. */ |
f0158f44 AM |
9546 | |
9547 | static bfd_boolean | |
46434633 AM |
9548 | ensure_undef_dynamic (struct bfd_link_info *info, |
9549 | struct elf_link_hash_entry *h) | |
f0158f44 AM |
9550 | { |
9551 | struct elf_link_hash_table *htab = elf_hash_table (info); | |
9552 | ||
9553 | if (htab->dynamic_sections_created | |
46434633 AM |
9554 | && ((info->dynamic_undefined_weak != 0 |
9555 | && h->root.type == bfd_link_hash_undefweak) | |
9556 | || h->root.type == bfd_link_hash_undefined) | |
f0158f44 AM |
9557 | && h->dynindx == -1 |
9558 | && !h->forced_local | |
9559 | && ELF_ST_VISIBILITY (h->other) == STV_DEFAULT) | |
9560 | return bfd_elf_link_record_dynamic_symbol (info, h); | |
9561 | return TRUE; | |
9562 | } | |
9563 | ||
65f38f15 AM |
9564 | /* Allocate space in .plt, .got and associated reloc sections for |
9565 | dynamic relocs. */ | |
5bd4f169 | 9566 | |
b34976b6 | 9567 | static bfd_boolean |
4ce794b7 | 9568 | allocate_dynrelocs (struct elf_link_hash_entry *h, void *inf) |
5bd4f169 | 9569 | { |
65f38f15 AM |
9570 | struct bfd_link_info *info; |
9571 | struct ppc_link_hash_table *htab; | |
5bd4f169 | 9572 | asection *s; |
65f38f15 | 9573 | struct ppc_link_hash_entry *eh; |
0b8bcf0d | 9574 | struct got_entry **pgent, *gent; |
5bd4f169 | 9575 | |
e92d460e | 9576 | if (h->root.type == bfd_link_hash_indirect) |
b34976b6 | 9577 | return TRUE; |
5bd4f169 | 9578 | |
65f38f15 AM |
9579 | info = (struct bfd_link_info *) inf; |
9580 | htab = ppc_hash_table (info); | |
4dfe6ac6 NC |
9581 | if (htab == NULL) |
9582 | return FALSE; | |
5bd4f169 | 9583 | |
ed7007c1 | 9584 | eh = ppc_elf_hash_entry (h); |
951fd09b AM |
9585 | /* Run through the TLS GD got entries first if we're changing them |
9586 | to TPREL. */ | |
b00a0a86 | 9587 | if ((eh->tls_mask & (TLS_TLS | TLS_GDIE)) == (TLS_TLS | TLS_GDIE)) |
951fd09b AM |
9588 | for (gent = h->got.glist; gent != NULL; gent = gent->next) |
9589 | if (gent->got.refcount > 0 | |
9590 | && (gent->tls_type & TLS_GD) != 0) | |
9591 | { | |
9592 | /* This was a GD entry that has been converted to TPREL. If | |
9593 | there happens to be a TPREL entry we can use that one. */ | |
9594 | struct got_entry *ent; | |
9595 | for (ent = h->got.glist; ent != NULL; ent = ent->next) | |
9596 | if (ent->got.refcount > 0 | |
9597 | && (ent->tls_type & TLS_TPREL) != 0 | |
e717da7e AM |
9598 | && ent->addend == gent->addend |
9599 | && ent->owner == gent->owner) | |
951fd09b AM |
9600 | { |
9601 | gent->got.refcount = 0; | |
9602 | break; | |
9603 | } | |
9604 | ||
9605 | /* If not, then we'll be using our own TPREL entry. */ | |
9606 | if (gent->got.refcount != 0) | |
9607 | gent->tls_type = TLS_TLS | TLS_TPREL; | |
9608 | } | |
9609 | ||
7865406b AM |
9610 | /* Remove any list entry that won't generate a word in the GOT before |
9611 | we call merge_got_entries. Otherwise we risk merging to empty | |
9612 | entries. */ | |
0b8bcf0d AM |
9613 | pgent = &h->got.glist; |
9614 | while ((gent = *pgent) != NULL) | |
411e1bfb | 9615 | if (gent->got.refcount > 0) |
7865406b AM |
9616 | { |
9617 | if ((gent->tls_type & TLS_LD) != 0 | |
f749f26e | 9618 | && SYMBOL_REFERENCES_LOCAL (info, h)) |
7865406b AM |
9619 | { |
9620 | ppc64_tlsld_got (gent->owner)->got.refcount += 1; | |
9621 | *pgent = gent->next; | |
9622 | } | |
9623 | else | |
9624 | pgent = &gent->next; | |
9625 | } | |
9626 | else | |
9627 | *pgent = gent->next; | |
9628 | ||
9629 | if (!htab->do_multi_toc) | |
9630 | merge_got_entries (&h->got.glist); | |
9631 | ||
9632 | for (gent = h->got.glist; gent != NULL; gent = gent->next) | |
9633 | if (!gent->is_indirect) | |
411e1bfb | 9634 | { |
ec73ddcd AM |
9635 | /* Ensure we catch all the cases where this symbol should |
9636 | be made dynamic. */ | |
46434633 | 9637 | if (!ensure_undef_dynamic (info, h)) |
f0158f44 | 9638 | return FALSE; |
65f38f15 | 9639 | |
0c8d6e5c | 9640 | if (!is_ppc64_elf (gent->owner)) |
927be08e | 9641 | abort (); |
0ffa91dd | 9642 | |
927be08e | 9643 | allocate_got (h, info, gent); |
411e1bfb | 9644 | } |
65f38f15 | 9645 | |
954b63d4 AM |
9646 | /* If no dynamic sections we can't have dynamic relocs, except for |
9647 | IFUNCs which are handled even in static executables. */ | |
8a2058b5 AM |
9648 | if (!htab->elf.dynamic_sections_created |
9649 | && h->type != STT_GNU_IFUNC) | |
190eb1dd | 9650 | h->dyn_relocs = NULL; |
8a2058b5 | 9651 | |
529fe20e AM |
9652 | /* Discard relocs on undefined symbols that must be local. */ |
9653 | else if (h->root.type == bfd_link_hash_undefined | |
9654 | && ELF_ST_VISIBILITY (h->other) != STV_DEFAULT) | |
190eb1dd | 9655 | h->dyn_relocs = NULL; |
529fe20e | 9656 | |
954b63d4 AM |
9657 | /* Also discard relocs on undefined weak syms with non-default |
9658 | visibility, or when dynamic_undefined_weak says so. */ | |
21d68fcd | 9659 | else if (UNDEFWEAK_NO_DYNAMIC_RELOC (info, h)) |
190eb1dd | 9660 | h->dyn_relocs = NULL; |
954b63d4 | 9661 | |
190eb1dd | 9662 | if (h->dyn_relocs != NULL) |
65f38f15 | 9663 | { |
8a2058b5 AM |
9664 | struct elf_dyn_relocs *p, **pp; |
9665 | ||
57e7d118 AM |
9666 | /* In the shared -Bsymbolic case, discard space allocated for |
9667 | dynamic pc-relative relocs against symbols which turn out to | |
9668 | be defined in regular objects. For the normal shared case, | |
9669 | discard space for relocs that have become local due to symbol | |
9670 | visibility changes. */ | |
57e7d118 | 9671 | if (bfd_link_pic (info)) |
65f38f15 | 9672 | { |
57e7d118 AM |
9673 | /* Relocs that use pc_count are those that appear on a call |
9674 | insn, or certain REL relocs (see must_be_dyn_reloc) that | |
9675 | can be generated via assembly. We want calls to | |
9676 | protected symbols to resolve directly to the function | |
9677 | rather than going via the plt. If people want function | |
9678 | pointer comparisons to work as expected then they should | |
9679 | avoid writing weird assembly. */ | |
9680 | if (SYMBOL_CALLS_LOCAL (info, h)) | |
9681 | { | |
190eb1dd | 9682 | for (pp = &h->dyn_relocs; (p = *pp) != NULL; ) |
57e7d118 AM |
9683 | { |
9684 | p->count -= p->pc_count; | |
9685 | p->pc_count = 0; | |
9686 | if (p->count == 0) | |
9687 | *pp = p->next; | |
9688 | else | |
9689 | pp = &p->next; | |
9690 | } | |
9691 | } | |
65f38f15 | 9692 | |
190eb1dd | 9693 | if (h->dyn_relocs != NULL) |
5bd4f169 | 9694 | { |
ec73ddcd AM |
9695 | /* Ensure we catch all the cases where this symbol |
9696 | should be made dynamic. */ | |
46434633 | 9697 | if (!ensure_undef_dynamic (info, h)) |
f0158f44 | 9698 | return FALSE; |
5bd4f169 | 9699 | } |
65f38f15 | 9700 | } |
ec73ddcd AM |
9701 | |
9702 | /* For a fixed position executable, discard space for | |
9703 | relocs against symbols which are not dynamic. */ | |
9704 | else if (h->type != STT_GNU_IFUNC) | |
57e7d118 | 9705 | { |
529fe20e AM |
9706 | if (h->dynamic_adjusted |
9707 | && !h->def_regular | |
9708 | && !ELF_COMMON_DEF_P (h)) | |
f0158f44 | 9709 | { |
ec73ddcd AM |
9710 | /* Ensure we catch all the cases where this symbol |
9711 | should be made dynamic. */ | |
46434633 | 9712 | if (!ensure_undef_dynamic (info, h)) |
f0158f44 | 9713 | return FALSE; |
dfbb6ac9 | 9714 | |
ec73ddcd | 9715 | /* But if that didn't work out, discard dynamic relocs. */ |
f0158f44 | 9716 | if (h->dynindx == -1) |
190eb1dd | 9717 | h->dyn_relocs = NULL; |
f0158f44 AM |
9718 | } |
9719 | else | |
190eb1dd | 9720 | h->dyn_relocs = NULL; |
57e7d118 AM |
9721 | } |
9722 | ||
9723 | /* Finally, allocate space. */ | |
190eb1dd | 9724 | for (p = h->dyn_relocs; p != NULL; p = p->next) |
57e7d118 AM |
9725 | { |
9726 | asection *sreloc = elf_section_data (p->sec)->sreloc; | |
9727 | if (eh->elf.type == STT_GNU_IFUNC) | |
9728 | sreloc = htab->elf.irelplt; | |
9729 | sreloc->size += p->count * sizeof (Elf64_External_Rela); | |
dfbb6ac9 | 9730 | } |
65f38f15 | 9731 | } |
57e7d118 | 9732 | |
2d7ad24e AM |
9733 | /* We might need a PLT entry when the symbol |
9734 | a) is dynamic, or | |
9735 | b) is an ifunc, or | |
9736 | c) has plt16 relocs and has been processed by adjust_dynamic_symbol, or | |
9737 | d) has plt16 relocs and we are linking statically. */ | |
9738 | if ((htab->elf.dynamic_sections_created && h->dynindx != -1) | |
9739 | || h->type == STT_GNU_IFUNC | |
9740 | || (h->needs_plt && h->dynamic_adjusted) | |
9741 | || (h->needs_plt | |
9742 | && h->def_regular | |
9743 | && !htab->elf.dynamic_sections_created | |
3e04d765 | 9744 | && !htab->can_convert_all_inline_plt |
ed7007c1 | 9745 | && (ppc_elf_hash_entry (h)->tls_mask |
2d7ad24e | 9746 | & (TLS_TLS | PLT_KEEP)) == PLT_KEEP)) |
65f38f15 | 9747 | { |
57e7d118 AM |
9748 | struct plt_entry *pent; |
9749 | bfd_boolean doneone = FALSE; | |
9750 | for (pent = h->plt.plist; pent != NULL; pent = pent->next) | |
9751 | if (pent->plt.refcount > 0) | |
9752 | { | |
9753 | if (!htab->elf.dynamic_sections_created | |
9754 | || h->dynindx == -1) | |
9755 | { | |
2d7ad24e AM |
9756 | if (h->type == STT_GNU_IFUNC) |
9757 | { | |
9758 | s = htab->elf.iplt; | |
9759 | pent->plt.offset = s->size; | |
9760 | s->size += PLT_ENTRY_SIZE (htab); | |
9761 | s = htab->elf.irelplt; | |
9762 | } | |
9763 | else | |
9764 | { | |
9765 | s = htab->pltlocal; | |
9766 | pent->plt.offset = s->size; | |
9767 | s->size += LOCAL_PLT_ENTRY_SIZE (htab); | |
9768 | s = bfd_link_pic (info) ? htab->relpltlocal : NULL; | |
9769 | } | |
57e7d118 AM |
9770 | } |
9771 | else | |
9772 | { | |
9773 | /* If this is the first .plt entry, make room for the special | |
9774 | first entry. */ | |
9775 | s = htab->elf.splt; | |
9776 | if (s->size == 0) | |
9777 | s->size += PLT_INITIAL_ENTRY_SIZE (htab); | |
65f38f15 | 9778 | |
57e7d118 | 9779 | pent->plt.offset = s->size; |
65f38f15 | 9780 | |
57e7d118 AM |
9781 | /* Make room for this entry. */ |
9782 | s->size += PLT_ENTRY_SIZE (htab); | |
65f38f15 | 9783 | |
57e7d118 AM |
9784 | /* Make room for the .glink code. */ |
9785 | s = htab->glink; | |
9786 | if (s->size == 0) | |
9e390558 | 9787 | s->size += GLINK_PLTRESOLVE_SIZE (htab); |
57e7d118 AM |
9788 | if (htab->opd_abi) |
9789 | { | |
9790 | /* We need bigger stubs past index 32767. */ | |
9e390558 | 9791 | if (s->size >= GLINK_PLTRESOLVE_SIZE (htab) + 32768*2*4) |
57e7d118 AM |
9792 | s->size += 4; |
9793 | s->size += 2*4; | |
9794 | } | |
9795 | else | |
9796 | s->size += 4; | |
65f38f15 | 9797 | |
57e7d118 AM |
9798 | /* We also need to make an entry in the .rela.plt section. */ |
9799 | s = htab->elf.srelplt; | |
9800 | } | |
2d7ad24e AM |
9801 | if (s != NULL) |
9802 | s->size += sizeof (Elf64_External_Rela); | |
57e7d118 AM |
9803 | doneone = TRUE; |
9804 | } | |
9805 | else | |
9806 | pent->plt.offset = (bfd_vma) -1; | |
9807 | if (!doneone) | |
9808 | { | |
9809 | h->plt.plist = NULL; | |
9810 | h->needs_plt = 0; | |
9811 | } | |
65f38f15 | 9812 | } |
57e7d118 | 9813 | else |
65f38f15 | 9814 | { |
57e7d118 AM |
9815 | h->plt.plist = NULL; |
9816 | h->needs_plt = 0; | |
65f38f15 AM |
9817 | } |
9818 | ||
b34976b6 | 9819 | return TRUE; |
65f38f15 AM |
9820 | } |
9821 | ||
9e390558 AM |
9822 | #define PPC_LO(v) ((v) & 0xffff) |
9823 | #define PPC_HI(v) (((v) >> 16) & 0xffff) | |
9824 | #define PPC_HA(v) PPC_HI ((v) + 0x8000) | |
04bdff6a AM |
9825 | #define D34(v) \ |
9826 | ((((v) & 0x3ffff0000ULL) << 16) | (v & 0xffff)) | |
9827 | #define HA34(v) ((v + (1ULL << 33)) >> 34) | |
9e390558 | 9828 | |
a345bc8d AM |
9829 | /* Called via elf_link_hash_traverse from ppc64_elf_size_dynamic_sections |
9830 | to set up space for global entry stubs. These are put in glink, | |
9831 | after the branch table. */ | |
65f38f15 | 9832 | |
b34976b6 | 9833 | static bfd_boolean |
a345bc8d | 9834 | size_global_entry_stubs (struct elf_link_hash_entry *h, void *inf) |
65f38f15 | 9835 | { |
a345bc8d AM |
9836 | struct bfd_link_info *info; |
9837 | struct ppc_link_hash_table *htab; | |
9838 | struct plt_entry *pent; | |
9e390558 | 9839 | asection *s, *plt; |
65f38f15 | 9840 | |
a345bc8d AM |
9841 | if (h->root.type == bfd_link_hash_indirect) |
9842 | return TRUE; | |
65f38f15 | 9843 | |
a345bc8d AM |
9844 | if (!h->pointer_equality_needed) |
9845 | return TRUE; | |
65f38f15 | 9846 | |
a345bc8d AM |
9847 | if (h->def_regular) |
9848 | return TRUE; | |
65f38f15 | 9849 | |
a345bc8d AM |
9850 | info = inf; |
9851 | htab = ppc_hash_table (info); | |
9852 | if (htab == NULL) | |
9853 | return FALSE; | |
9854 | ||
9e390558 AM |
9855 | s = htab->global_entry; |
9856 | plt = htab->elf.splt; | |
a345bc8d AM |
9857 | for (pent = h->plt.plist; pent != NULL; pent = pent->next) |
9858 | if (pent->plt.offset != (bfd_vma) -1 | |
9859 | && pent->addend == 0) | |
9860 | { | |
afe397ea AM |
9861 | /* For ELFv2, if this symbol is not defined in a regular file |
9862 | and we are not generating a shared library or pie, then we | |
9863 | need to define the symbol in the executable on a call stub. | |
9864 | This is to avoid text relocations. */ | |
9e390558 AM |
9865 | bfd_vma off, stub_align, stub_off, stub_size; |
9866 | unsigned int align_power; | |
9867 | ||
9868 | stub_size = 16; | |
9869 | stub_off = s->size; | |
9870 | if (htab->params->plt_stub_align >= 0) | |
9871 | align_power = htab->params->plt_stub_align; | |
9872 | else | |
9873 | align_power = -htab->params->plt_stub_align; | |
9874 | /* Setting section alignment is delayed until we know it is | |
9875 | non-empty. Otherwise the .text output section will be | |
9876 | aligned at least to plt_stub_align even when no global | |
9877 | entry stubs are needed. */ | |
9878 | if (s->alignment_power < align_power) | |
9879 | s->alignment_power = align_power; | |
9880 | stub_align = (bfd_vma) 1 << align_power; | |
9881 | if (htab->params->plt_stub_align >= 0 | |
9882 | || ((((stub_off + stub_size - 1) & -stub_align) | |
9883 | - (stub_off & -stub_align)) | |
9884 | > ((stub_size - 1) & -stub_align))) | |
9885 | stub_off = (stub_off + stub_align - 1) & -stub_align; | |
9886 | off = pent->plt.offset + plt->output_offset + plt->output_section->vma; | |
9887 | off -= stub_off + s->output_offset + s->output_section->vma; | |
9888 | /* Note that for --plt-stub-align negative we have a possible | |
9889 | dependency between stub offset and size. Break that | |
9890 | dependency by assuming the max stub size when calculating | |
9891 | the stub offset. */ | |
9892 | if (PPC_HA (off) == 0) | |
9893 | stub_size -= 4; | |
8a2058b5 | 9894 | h->root.type = bfd_link_hash_defined; |
afe397ea | 9895 | h->root.u.def.section = s; |
9e390558 AM |
9896 | h->root.u.def.value = stub_off; |
9897 | s->size = stub_off + stub_size; | |
a345bc8d AM |
9898 | break; |
9899 | } | |
9900 | return TRUE; | |
9901 | } | |
9902 | ||
65f38f15 AM |
9903 | /* Set the sizes of the dynamic sections. */ |
9904 | ||
b34976b6 | 9905 | static bfd_boolean |
ee67d69a | 9906 | ppc64_elf_size_dynamic_sections (bfd *output_bfd, |
4ce794b7 | 9907 | struct bfd_link_info *info) |
65f38f15 AM |
9908 | { |
9909 | struct ppc_link_hash_table *htab; | |
9910 | bfd *dynobj; | |
9911 | asection *s; | |
b34976b6 | 9912 | bfd_boolean relocs; |
65f38f15 | 9913 | bfd *ibfd; |
7865406b | 9914 | struct got_entry *first_tlsld; |
65f38f15 AM |
9915 | |
9916 | htab = ppc_hash_table (info); | |
4dfe6ac6 NC |
9917 | if (htab == NULL) |
9918 | return FALSE; | |
9919 | ||
65f38f15 AM |
9920 | dynobj = htab->elf.dynobj; |
9921 | if (dynobj == NULL) | |
9922 | abort (); | |
9923 | ||
9924 | if (htab->elf.dynamic_sections_created) | |
9925 | { | |
9926 | /* Set the contents of the .interp section to the interpreter. */ | |
9b8b325a | 9927 | if (bfd_link_executable (info) && !info->nointerp) |
65f38f15 | 9928 | { |
3d4d4302 | 9929 | s = bfd_get_linker_section (dynobj, ".interp"); |
65f38f15 AM |
9930 | if (s == NULL) |
9931 | abort (); | |
eea6121a | 9932 | s->size = sizeof ELF_DYNAMIC_INTERPRETER; |
65f38f15 AM |
9933 | s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER; |
9934 | } | |
9935 | } | |
9936 | ||
9937 | /* Set up .got offsets for local syms, and space for local dynamic | |
9938 | relocs. */ | |
c72f2fb2 | 9939 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next) |
65f38f15 | 9940 | { |
411e1bfb AM |
9941 | struct got_entry **lgot_ents; |
9942 | struct got_entry **end_lgot_ents; | |
e054468f AM |
9943 | struct plt_entry **local_plt; |
9944 | struct plt_entry **end_local_plt; | |
f961d9dd | 9945 | unsigned char *lgot_masks; |
65f38f15 AM |
9946 | bfd_size_type locsymcount; |
9947 | Elf_Internal_Shdr *symtab_hdr; | |
65f38f15 | 9948 | |
0c8d6e5c | 9949 | if (!is_ppc64_elf (ibfd)) |
65f38f15 AM |
9950 | continue; |
9951 | ||
9952 | for (s = ibfd->sections; s != NULL; s = s->next) | |
9953 | { | |
19e08130 | 9954 | struct ppc_dyn_relocs *p; |
65f38f15 | 9955 | |
6edfbbad | 9956 | for (p = elf_section_data (s)->local_dynrel; p != NULL; p = p->next) |
65f38f15 | 9957 | { |
ec338859 AM |
9958 | if (!bfd_is_abs_section (p->sec) |
9959 | && bfd_is_abs_section (p->sec->output_section)) | |
9960 | { | |
9961 | /* Input section has been discarded, either because | |
9962 | it is a copy of a linkonce section or due to | |
9963 | linker script /DISCARD/, so we'll be discarding | |
9964 | the relocs too. */ | |
9965 | } | |
248866a8 | 9966 | else if (p->count != 0) |
ec338859 | 9967 | { |
19e08130 AM |
9968 | asection *srel = elf_section_data (p->sec)->sreloc; |
9969 | if (p->ifunc) | |
33e44f2e | 9970 | srel = htab->elf.irelplt; |
eea6121a | 9971 | srel->size += p->count * sizeof (Elf64_External_Rela); |
248866a8 AM |
9972 | if ((p->sec->output_section->flags & SEC_READONLY) != 0) |
9973 | info->flags |= DF_TEXTREL; | |
ec338859 | 9974 | } |
65f38f15 AM |
9975 | } |
9976 | } | |
9977 | ||
411e1bfb AM |
9978 | lgot_ents = elf_local_got_ents (ibfd); |
9979 | if (!lgot_ents) | |
65f38f15 AM |
9980 | continue; |
9981 | ||
0ffa91dd | 9982 | symtab_hdr = &elf_symtab_hdr (ibfd); |
65f38f15 | 9983 | locsymcount = symtab_hdr->sh_info; |
411e1bfb | 9984 | end_lgot_ents = lgot_ents + locsymcount; |
e054468f AM |
9985 | local_plt = (struct plt_entry **) end_lgot_ents; |
9986 | end_local_plt = local_plt + locsymcount; | |
f961d9dd | 9987 | lgot_masks = (unsigned char *) end_local_plt; |
e717da7e | 9988 | s = ppc64_elf_tdata (ibfd)->got; |
e7b938ca | 9989 | for (; lgot_ents < end_lgot_ents; ++lgot_ents, ++lgot_masks) |
65f38f15 | 9990 | { |
0b8bcf0d | 9991 | struct got_entry **pent, *ent; |
411e1bfb | 9992 | |
0b8bcf0d AM |
9993 | pent = lgot_ents; |
9994 | while ((ent = *pent) != NULL) | |
411e1bfb AM |
9995 | if (ent->got.refcount > 0) |
9996 | { | |
e7b938ca | 9997 | if ((ent->tls_type & *lgot_masks & TLS_LD) != 0) |
411e1bfb | 9998 | { |
927be08e | 9999 | ppc64_tlsld_got (ibfd)->got.refcount += 1; |
0b8bcf0d | 10000 | *pent = ent->next; |
411e1bfb AM |
10001 | } |
10002 | else | |
10003 | { | |
19e08130 AM |
10004 | unsigned int ent_size = 8; |
10005 | unsigned int rel_size = sizeof (Elf64_External_Rela); | |
10006 | ||
eea6121a | 10007 | ent->got.offset = s->size; |
e7b938ca | 10008 | if ((ent->tls_type & *lgot_masks & TLS_GD) != 0) |
927be08e | 10009 | { |
19e08130 AM |
10010 | ent_size *= 2; |
10011 | rel_size *= 2; | |
10012 | } | |
10013 | s->size += ent_size; | |
37da22e5 | 10014 | if ((*lgot_masks & (TLS_TLS | PLT_IFUNC)) == PLT_IFUNC) |
19e08130 | 10015 | { |
33e44f2e | 10016 | htab->elf.irelplt->size += rel_size; |
19e08130 AM |
10017 | htab->got_reli_size += rel_size; |
10018 | } | |
93370e8e AM |
10019 | else if (bfd_link_pic (info) |
10020 | && !(ent->tls_type != 0 | |
10021 | && bfd_link_executable (info))) | |
19e08130 AM |
10022 | { |
10023 | asection *srel = ppc64_elf_tdata (ibfd)->relgot; | |
10024 | srel->size += rel_size; | |
927be08e | 10025 | } |
0b8bcf0d | 10026 | pent = &ent->next; |
411e1bfb AM |
10027 | } |
10028 | } | |
10029 | else | |
0b8bcf0d | 10030 | *pent = ent->next; |
65f38f15 | 10031 | } |
e054468f | 10032 | |
2d7ad24e AM |
10033 | /* Allocate space for plt calls to local syms. */ |
10034 | lgot_masks = (unsigned char *) end_local_plt; | |
10035 | for (; local_plt < end_local_plt; ++local_plt, ++lgot_masks) | |
e054468f AM |
10036 | { |
10037 | struct plt_entry *ent; | |
10038 | ||
10039 | for (ent = *local_plt; ent != NULL; ent = ent->next) | |
10040 | if (ent->plt.refcount > 0) | |
10041 | { | |
2d7ad24e AM |
10042 | if ((*lgot_masks & (TLS_TLS | PLT_IFUNC)) == PLT_IFUNC) |
10043 | { | |
10044 | s = htab->elf.iplt; | |
10045 | ent->plt.offset = s->size; | |
10046 | s->size += PLT_ENTRY_SIZE (htab); | |
10047 | htab->elf.irelplt->size += sizeof (Elf64_External_Rela); | |
10048 | } | |
3e04d765 AM |
10049 | else if (htab->can_convert_all_inline_plt |
10050 | || (*lgot_masks & (TLS_TLS | PLT_KEEP)) != PLT_KEEP) | |
2d7ad24e AM |
10051 | ent->plt.offset = (bfd_vma) -1; |
10052 | else | |
10053 | { | |
10054 | s = htab->pltlocal; | |
10055 | ent->plt.offset = s->size; | |
10056 | s->size += LOCAL_PLT_ENTRY_SIZE (htab); | |
10057 | if (bfd_link_pic (info)) | |
10058 | htab->relpltlocal->size += sizeof (Elf64_External_Rela); | |
10059 | } | |
e054468f AM |
10060 | } |
10061 | else | |
10062 | ent->plt.offset = (bfd_vma) -1; | |
10063 | } | |
65f38f15 AM |
10064 | } |
10065 | ||
10066 | /* Allocate global sym .plt and .got entries, and space for global | |
10067 | sym dynamic relocs. */ | |
4ce794b7 | 10068 | elf_link_hash_traverse (&htab->elf, allocate_dynrelocs, info); |
a345bc8d | 10069 | |
0e1862bb | 10070 | if (!htab->opd_abi && !bfd_link_pic (info)) |
a345bc8d | 10071 | elf_link_hash_traverse (&htab->elf, size_global_entry_stubs, info); |
65f38f15 | 10072 | |
7865406b | 10073 | first_tlsld = NULL; |
c72f2fb2 | 10074 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next) |
102890f0 | 10075 | { |
7865406b AM |
10076 | struct got_entry *ent; |
10077 | ||
0c8d6e5c | 10078 | if (!is_ppc64_elf (ibfd)) |
102890f0 AM |
10079 | continue; |
10080 | ||
7865406b AM |
10081 | ent = ppc64_tlsld_got (ibfd); |
10082 | if (ent->got.refcount > 0) | |
102890f0 | 10083 | { |
7865406b | 10084 | if (!htab->do_multi_toc && first_tlsld != NULL) |
102890f0 | 10085 | { |
7865406b AM |
10086 | ent->is_indirect = TRUE; |
10087 | ent->got.ent = first_tlsld; | |
10088 | } | |
10089 | else | |
10090 | { | |
10091 | if (first_tlsld == NULL) | |
10092 | first_tlsld = ent; | |
10093 | s = ppc64_elf_tdata (ibfd)->got; | |
10094 | ent->got.offset = s->size; | |
10095 | ent->owner = ibfd; | |
10096 | s->size += 16; | |
f749f26e | 10097 | if (bfd_link_dll (info)) |
7865406b AM |
10098 | { |
10099 | asection *srel = ppc64_elf_tdata (ibfd)->relgot; | |
10100 | srel->size += sizeof (Elf64_External_Rela); | |
10101 | } | |
102890f0 AM |
10102 | } |
10103 | } | |
10104 | else | |
7865406b | 10105 | ent->got.offset = (bfd_vma) -1; |
102890f0 AM |
10106 | } |
10107 | ||
65f38f15 AM |
10108 | /* We now have determined the sizes of the various dynamic sections. |
10109 | Allocate memory for them. */ | |
b34976b6 | 10110 | relocs = FALSE; |
65f38f15 AM |
10111 | for (s = dynobj->sections; s != NULL; s = s->next) |
10112 | { | |
10113 | if ((s->flags & SEC_LINKER_CREATED) == 0) | |
10114 | continue; | |
10115 | ||
4ce794b7 | 10116 | if (s == htab->brlt || s == htab->relbrlt) |
721956f4 AM |
10117 | /* These haven't been allocated yet; don't strip. */ |
10118 | continue; | |
33e44f2e AM |
10119 | else if (s == htab->elf.sgot |
10120 | || s == htab->elf.splt | |
10121 | || s == htab->elf.iplt | |
2d7ad24e | 10122 | || s == htab->pltlocal |
c456f082 | 10123 | || s == htab->glink |
9e390558 | 10124 | || s == htab->global_entry |
5474d94f AM |
10125 | || s == htab->elf.sdynbss |
10126 | || s == htab->elf.sdynrelro) | |
65f38f15 AM |
10127 | { |
10128 | /* Strip this section if we don't need it; see the | |
10129 | comment below. */ | |
5bd4f169 | 10130 | } |
58d180e8 AM |
10131 | else if (s == htab->glink_eh_frame) |
10132 | { | |
10133 | if (!bfd_is_abs_section (s->output_section)) | |
10134 | /* Not sized yet. */ | |
10135 | continue; | |
10136 | } | |
70cc837d | 10137 | else if (CONST_STRNEQ (s->name, ".rela")) |
5bd4f169 | 10138 | { |
c456f082 | 10139 | if (s->size != 0) |
5bd4f169 | 10140 | { |
33e44f2e | 10141 | if (s != htab->elf.srelplt) |
b34976b6 | 10142 | relocs = TRUE; |
5bd4f169 AM |
10143 | |
10144 | /* We use the reloc_count field as a counter if we need | |
10145 | to copy relocs into the output file. */ | |
10146 | s->reloc_count = 0; | |
10147 | } | |
10148 | } | |
65f38f15 | 10149 | else |
5bd4f169 AM |
10150 | { |
10151 | /* It's not one of our sections, so don't allocate space. */ | |
10152 | continue; | |
10153 | } | |
10154 | ||
eea6121a | 10155 | if (s->size == 0) |
5bd4f169 | 10156 | { |
c456f082 AM |
10157 | /* If we don't need this section, strip it from the |
10158 | output file. This is mostly to handle .rela.bss and | |
10159 | .rela.plt. We must create both sections in | |
10160 | create_dynamic_sections, because they must be created | |
10161 | before the linker maps input sections to output | |
10162 | sections. The linker does that before | |
10163 | adjust_dynamic_symbol is called, and it is that | |
10164 | function which decides whether anything needs to go | |
10165 | into these sections. */ | |
8423293d | 10166 | s->flags |= SEC_EXCLUDE; |
5bd4f169 AM |
10167 | continue; |
10168 | } | |
10169 | ||
06bcf541 AM |
10170 | if (bfd_is_abs_section (s->output_section)) |
10171 | _bfd_error_handler (_("warning: discarding dynamic section %s"), | |
10172 | s->name); | |
10173 | ||
c456f082 | 10174 | if ((s->flags & SEC_HAS_CONTENTS) == 0) |
5f333394 AM |
10175 | continue; |
10176 | ||
65f38f15 AM |
10177 | /* Allocate memory for the section contents. We use bfd_zalloc |
10178 | here in case unused entries are not reclaimed before the | |
10179 | section's contents are written out. This should not happen, | |
411e1bfb AM |
10180 | but this way if it does we get a R_PPC64_NONE reloc in .rela |
10181 | sections instead of garbage. | |
10182 | We also rely on the section contents being zero when writing | |
5474d94f | 10183 | the GOT and .dynrelro. */ |
eea6121a | 10184 | s->contents = bfd_zalloc (dynobj, s->size); |
65f38f15 | 10185 | if (s->contents == NULL) |
b34976b6 | 10186 | return FALSE; |
5bd4f169 AM |
10187 | } |
10188 | ||
c72f2fb2 | 10189 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next) |
e717da7e | 10190 | { |
0c8d6e5c | 10191 | if (!is_ppc64_elf (ibfd)) |
7b53ace3 AM |
10192 | continue; |
10193 | ||
e717da7e | 10194 | s = ppc64_elf_tdata (ibfd)->got; |
33e44f2e | 10195 | if (s != NULL && s != htab->elf.sgot) |
e717da7e | 10196 | { |
eea6121a | 10197 | if (s->size == 0) |
8423293d | 10198 | s->flags |= SEC_EXCLUDE; |
e717da7e AM |
10199 | else |
10200 | { | |
eea6121a | 10201 | s->contents = bfd_zalloc (ibfd, s->size); |
e717da7e AM |
10202 | if (s->contents == NULL) |
10203 | return FALSE; | |
10204 | } | |
10205 | } | |
10206 | s = ppc64_elf_tdata (ibfd)->relgot; | |
10207 | if (s != NULL) | |
10208 | { | |
eea6121a | 10209 | if (s->size == 0) |
8423293d | 10210 | s->flags |= SEC_EXCLUDE; |
e717da7e AM |
10211 | else |
10212 | { | |
eea6121a | 10213 | s->contents = bfd_zalloc (ibfd, s->size); |
e717da7e AM |
10214 | if (s->contents == NULL) |
10215 | return FALSE; | |
10216 | relocs = TRUE; | |
10217 | s->reloc_count = 0; | |
10218 | } | |
10219 | } | |
10220 | } | |
10221 | ||
e86ce104 | 10222 | if (htab->elf.dynamic_sections_created) |
5bd4f169 | 10223 | { |
e8910a83 AM |
10224 | bfd_boolean tls_opt; |
10225 | ||
5bd4f169 AM |
10226 | /* Add some entries to the .dynamic section. We fill in the |
10227 | values later, in ppc64_elf_finish_dynamic_sections, but we | |
10228 | must add the entries now so that we get the correct size for | |
10229 | the .dynamic section. The DT_DEBUG entry is filled in by the | |
10230 | dynamic linker and used by the debugger. */ | |
dc810e39 | 10231 | #define add_dynamic_entry(TAG, VAL) \ |
5a580b3a | 10232 | _bfd_elf_add_dynamic_entry (info, TAG, VAL) |
dc810e39 | 10233 | |
0e1862bb | 10234 | if (bfd_link_executable (info)) |
5bd4f169 | 10235 | { |
dc810e39 | 10236 | if (!add_dynamic_entry (DT_DEBUG, 0)) |
b34976b6 | 10237 | return FALSE; |
5bd4f169 AM |
10238 | } |
10239 | ||
33e44f2e | 10240 | if (htab->elf.splt != NULL && htab->elf.splt->size != 0) |
5bd4f169 | 10241 | { |
dc810e39 AM |
10242 | if (!add_dynamic_entry (DT_PLTGOT, 0) |
10243 | || !add_dynamic_entry (DT_PLTRELSZ, 0) | |
10244 | || !add_dynamic_entry (DT_PLTREL, DT_RELA) | |
5d1634d7 AM |
10245 | || !add_dynamic_entry (DT_JMPREL, 0) |
10246 | || !add_dynamic_entry (DT_PPC64_GLINK, 0)) | |
b34976b6 | 10247 | return FALSE; |
5bd4f169 AM |
10248 | } |
10249 | ||
ee67d69a | 10250 | if (NO_OPD_RELOCS && abiversion (output_bfd) <= 1) |
19397422 AM |
10251 | { |
10252 | if (!add_dynamic_entry (DT_PPC64_OPD, 0) | |
10253 | || !add_dynamic_entry (DT_PPC64_OPDSZ, 0)) | |
b34976b6 | 10254 | return FALSE; |
19397422 AM |
10255 | } |
10256 | ||
7c9cf415 | 10257 | tls_opt = (htab->params->tls_get_addr_opt |
9e7028aa AM |
10258 | && ((htab->tls_get_addr_fd != NULL |
10259 | && htab->tls_get_addr_fd->elf.plt.plist != NULL) | |
10260 | || (htab->tga_desc_fd != NULL | |
10261 | && htab->tga_desc_fd->elf.plt.plist != NULL))); | |
e8910a83 AM |
10262 | if (tls_opt || !htab->opd_abi) |
10263 | { | |
10264 | if (!add_dynamic_entry (DT_PPC64_OPT, tls_opt ? PPC64_OPT_TLS : 0)) | |
10265 | return FALSE; | |
10266 | } | |
a7f2871e | 10267 | |
5bd4f169 AM |
10268 | if (relocs) |
10269 | { | |
dc810e39 AM |
10270 | if (!add_dynamic_entry (DT_RELA, 0) |
10271 | || !add_dynamic_entry (DT_RELASZ, 0) | |
10272 | || !add_dynamic_entry (DT_RELAENT, sizeof (Elf64_External_Rela))) | |
b34976b6 | 10273 | return FALSE; |
5bd4f169 | 10274 | |
65f38f15 AM |
10275 | /* If any dynamic relocs apply to a read-only section, |
10276 | then we need a DT_TEXTREL entry. */ | |
248866a8 | 10277 | if ((info->flags & DF_TEXTREL) == 0) |
d49e5065 L |
10278 | elf_link_hash_traverse (&htab->elf, |
10279 | _bfd_elf_maybe_set_textrel, info); | |
5bd4f169 | 10280 | |
65f38f15 | 10281 | if ((info->flags & DF_TEXTREL) != 0) |
5bd4f169 | 10282 | { |
65f38f15 | 10283 | if (!add_dynamic_entry (DT_TEXTREL, 0)) |
b34976b6 | 10284 | return FALSE; |
5bd4f169 | 10285 | } |
5bd4f169 | 10286 | } |
5bd4f169 | 10287 | } |
65f38f15 | 10288 | #undef add_dynamic_entry |
5bd4f169 | 10289 | |
b34976b6 | 10290 | return TRUE; |
5bd4f169 AM |
10291 | } |
10292 | ||
a345bc8d AM |
10293 | /* Return TRUE if symbol should be hashed in the `.gnu.hash' section. */ |
10294 | ||
10295 | static bfd_boolean | |
10296 | ppc64_elf_hash_symbol (struct elf_link_hash_entry *h) | |
10297 | { | |
10298 | if (h->plt.plist != NULL | |
10299 | && !h->def_regular | |
10300 | && !h->pointer_equality_needed) | |
10301 | return FALSE; | |
10302 | ||
10303 | return _bfd_elf_hash_symbol (h); | |
10304 | } | |
10305 | ||
721956f4 | 10306 | /* Determine the type of stub needed, if any, for a call. */ |
5bd4f169 | 10307 | |
4ce794b7 AM |
10308 | static inline enum ppc_stub_type |
10309 | ppc_type_of_stub (asection *input_sec, | |
10310 | const Elf_Internal_Rela *rel, | |
10311 | struct ppc_link_hash_entry **hash, | |
e054468f | 10312 | struct plt_entry **plt_ent, |
6911b7dc AM |
10313 | bfd_vma destination, |
10314 | unsigned long local_off) | |
5bd4f169 | 10315 | { |
721956f4 AM |
10316 | struct ppc_link_hash_entry *h = *hash; |
10317 | bfd_vma location; | |
10318 | bfd_vma branch_offset; | |
10319 | bfd_vma max_branch_offset; | |
4ce794b7 | 10320 | enum elf_ppc64_reloc_type r_type; |
5bd4f169 | 10321 | |
721956f4 AM |
10322 | if (h != NULL) |
10323 | { | |
e054468f | 10324 | struct plt_entry *ent; |
7fe2b9a6 | 10325 | struct ppc_link_hash_entry *fdh = h; |
b31867b6 AM |
10326 | if (h->oh != NULL |
10327 | && h->oh->is_func_descriptor) | |
7b8f6675 AM |
10328 | { |
10329 | fdh = ppc_follow_link (h->oh); | |
10330 | *hash = fdh; | |
10331 | } | |
8387904d | 10332 | |
e054468f AM |
10333 | for (ent = fdh->elf.plt.plist; ent != NULL; ent = ent->next) |
10334 | if (ent->addend == rel->r_addend | |
10335 | && ent->plt.offset != (bfd_vma) -1) | |
10336 | { | |
e054468f AM |
10337 | *plt_ent = ent; |
10338 | return ppc_stub_plt_call; | |
10339 | } | |
5bd4f169 | 10340 | |
7fe2b9a6 AM |
10341 | /* Here, we know we don't have a plt entry. If we don't have a |
10342 | either a defined function descriptor or a defined entry symbol | |
10343 | in a regular object file, then it is pointless trying to make | |
10344 | any other type of stub. */ | |
854b41e7 AM |
10345 | if (!is_static_defined (&fdh->elf) |
10346 | && !is_static_defined (&h->elf)) | |
721956f4 | 10347 | return ppc_stub_none; |
5d1634d7 | 10348 | } |
e054468f AM |
10349 | else if (elf_local_got_ents (input_sec->owner) != NULL) |
10350 | { | |
10351 | Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (input_sec->owner); | |
10352 | struct plt_entry **local_plt = (struct plt_entry **) | |
10353 | elf_local_got_ents (input_sec->owner) + symtab_hdr->sh_info; | |
10354 | unsigned long r_symndx = ELF64_R_SYM (rel->r_info); | |
10355 | ||
10356 | if (local_plt[r_symndx] != NULL) | |
10357 | { | |
10358 | struct plt_entry *ent; | |
10359 | ||
10360 | for (ent = local_plt[r_symndx]; ent != NULL; ent = ent->next) | |
10361 | if (ent->addend == rel->r_addend | |
10362 | && ent->plt.offset != (bfd_vma) -1) | |
10363 | { | |
10364 | *plt_ent = ent; | |
10365 | return ppc_stub_plt_call; | |
10366 | } | |
10367 | } | |
10368 | } | |
5d1634d7 | 10369 | |
721956f4 AM |
10370 | /* Determine where the call point is. */ |
10371 | location = (input_sec->output_offset | |
10372 | + input_sec->output_section->vma | |
10373 | + rel->r_offset); | |
5d1634d7 | 10374 | |
721956f4 AM |
10375 | branch_offset = destination - location; |
10376 | r_type = ELF64_R_TYPE (rel->r_info); | |
5d1634d7 | 10377 | |
721956f4 AM |
10378 | /* Determine if a long branch stub is needed. */ |
10379 | max_branch_offset = 1 << 25; | |
23cedd1d AM |
10380 | if (r_type == R_PPC64_REL14 |
10381 | || r_type == R_PPC64_REL14_BRTAKEN | |
10382 | || r_type == R_PPC64_REL14_BRNTAKEN) | |
721956f4 | 10383 | max_branch_offset = 1 << 15; |
5d1634d7 | 10384 | |
6911b7dc | 10385 | if (branch_offset + max_branch_offset >= 2 * max_branch_offset - local_off) |
721956f4 AM |
10386 | /* We need a stub. Figure out whether a long_branch or plt_branch |
10387 | is needed later. */ | |
10388 | return ppc_stub_long_branch; | |
5d1634d7 | 10389 | |
721956f4 | 10390 | return ppc_stub_none; |
5d1634d7 AM |
10391 | } |
10392 | ||
f891966f AM |
10393 | /* Gets the address of a label (1:) in r11 and builds an offset in r12, |
10394 | then adds it to r11 (LOAD false) or loads r12 from r11+r12 (LOAD true). | |
10395 | . mflr %r12 | |
10396 | . bcl 20,31,1f | |
10397 | .1: mflr %r11 | |
10398 | . mtlr %r12 | |
05d0e962 | 10399 | . lis %r12,xxx-1b@highest |
f891966f | 10400 | . ori %r12,%r12,xxx-1b@higher |
05d0e962 | 10401 | . sldi %r12,%r12,32 |
f891966f | 10402 | . oris %r12,%r12,xxx-1b@high |
05d0e962 | 10403 | . ori %r12,%r12,xxx-1b@l |
f891966f | 10404 | . add/ldx %r12,%r11,%r12 */ |
05d0e962 AM |
10405 | |
10406 | static bfd_byte * | |
10407 | build_offset (bfd *abfd, bfd_byte *p, bfd_vma off, bfd_boolean load) | |
10408 | { | |
f891966f AM |
10409 | bfd_put_32 (abfd, MFLR_R12, p); |
10410 | p += 4; | |
10411 | bfd_put_32 (abfd, BCL_20_31, p); | |
10412 | p += 4; | |
10413 | bfd_put_32 (abfd, MFLR_R11, p); | |
10414 | p += 4; | |
10415 | bfd_put_32 (abfd, MTLR_R12, p); | |
10416 | p += 4; | |
05d0e962 AM |
10417 | if (off + 0x8000 < 0x10000) |
10418 | { | |
10419 | if (load) | |
10420 | bfd_put_32 (abfd, LD_R12_0R11 + PPC_LO (off), p); | |
10421 | else | |
10422 | bfd_put_32 (abfd, ADDI_R12_R11 + PPC_LO (off), p); | |
10423 | p += 4; | |
10424 | } | |
10425 | else if (off + 0x80008000ULL < 0x100000000ULL) | |
10426 | { | |
10427 | bfd_put_32 (abfd, ADDIS_R12_R11 + PPC_HA (off), p); | |
10428 | p += 4; | |
10429 | if (load) | |
10430 | bfd_put_32 (abfd, LD_R12_0R12 + PPC_LO (off), p); | |
10431 | else | |
10432 | bfd_put_32 (abfd, ADDI_R12_R12 + PPC_LO (off), p); | |
10433 | p += 4; | |
10434 | } | |
10435 | else | |
10436 | { | |
10437 | if (off + 0x800000000000ULL < 0x1000000000000ULL) | |
10438 | { | |
10439 | bfd_put_32 (abfd, LI_R12_0 + ((off >> 32) & 0xffff), p); | |
10440 | p += 4; | |
10441 | } | |
10442 | else | |
10443 | { | |
10444 | bfd_put_32 (abfd, LIS_R12 + ((off >> 48) & 0xffff), p); | |
10445 | p += 4; | |
10446 | if (((off >> 32) & 0xffff) != 0) | |
10447 | { | |
10448 | bfd_put_32 (abfd, ORI_R12_R12_0 + ((off >> 32) & 0xffff), p); | |
10449 | p += 4; | |
10450 | } | |
10451 | } | |
10452 | if (((off >> 32) & 0xffffffffULL) != 0) | |
10453 | { | |
10454 | bfd_put_32 (abfd, SLDI_R12_R12_32, p); | |
10455 | p += 4; | |
10456 | } | |
10457 | if (PPC_HI (off) != 0) | |
10458 | { | |
10459 | bfd_put_32 (abfd, ORIS_R12_R12_0 + PPC_HI (off), p); | |
10460 | p += 4; | |
10461 | } | |
10462 | if (PPC_LO (off) != 0) | |
10463 | { | |
10464 | bfd_put_32 (abfd, ORI_R12_R12_0 + PPC_LO (off), p); | |
10465 | p += 4; | |
10466 | } | |
10467 | if (load) | |
10468 | bfd_put_32 (abfd, LDX_R12_R11_R12, p); | |
10469 | else | |
10470 | bfd_put_32 (abfd, ADD_R12_R11_R12, p); | |
10471 | p += 4; | |
10472 | } | |
10473 | return p; | |
10474 | } | |
10475 | ||
10476 | static unsigned int | |
10477 | size_offset (bfd_vma off) | |
10478 | { | |
10479 | unsigned int size; | |
10480 | if (off + 0x8000 < 0x10000) | |
10481 | size = 4; | |
10482 | else if (off + 0x80008000ULL < 0x100000000ULL) | |
10483 | size = 8; | |
10484 | else | |
10485 | { | |
10486 | if (off + 0x800000000000ULL < 0x1000000000000ULL) | |
10487 | size = 4; | |
10488 | else | |
10489 | { | |
10490 | size = 4; | |
10491 | if (((off >> 32) & 0xffff) != 0) | |
10492 | size += 4; | |
10493 | } | |
10494 | if (((off >> 32) & 0xffffffffULL) != 0) | |
10495 | size += 4; | |
10496 | if (PPC_HI (off) != 0) | |
10497 | size += 4; | |
10498 | if (PPC_LO (off) != 0) | |
10499 | size += 4; | |
10500 | size += 4; | |
10501 | } | |
f891966f | 10502 | return size + 16; |
05d0e962 AM |
10503 | } |
10504 | ||
3d58e1fc AM |
10505 | static unsigned int |
10506 | num_relocs_for_offset (bfd_vma off) | |
10507 | { | |
10508 | unsigned int num_rel; | |
10509 | if (off + 0x8000 < 0x10000) | |
10510 | num_rel = 1; | |
10511 | else if (off + 0x80008000ULL < 0x100000000ULL) | |
10512 | num_rel = 2; | |
10513 | else | |
10514 | { | |
10515 | num_rel = 1; | |
10516 | if (off + 0x800000000000ULL >= 0x1000000000000ULL | |
10517 | && ((off >> 32) & 0xffff) != 0) | |
10518 | num_rel += 1; | |
10519 | if (PPC_HI (off) != 0) | |
10520 | num_rel += 1; | |
10521 | if (PPC_LO (off) != 0) | |
10522 | num_rel += 1; | |
10523 | } | |
10524 | return num_rel; | |
10525 | } | |
10526 | ||
10527 | static Elf_Internal_Rela * | |
10528 | emit_relocs_for_offset (struct bfd_link_info *info, Elf_Internal_Rela *r, | |
10529 | bfd_vma roff, bfd_vma targ, bfd_vma off) | |
10530 | { | |
10531 | bfd_vma relative_targ = targ - (roff - 8); | |
10532 | if (bfd_big_endian (info->output_bfd)) | |
10533 | roff += 2; | |
10534 | r->r_offset = roff; | |
10535 | r->r_addend = relative_targ + roff; | |
10536 | if (off + 0x8000 < 0x10000) | |
10537 | r->r_info = ELF64_R_INFO (0, R_PPC64_REL16); | |
10538 | else if (off + 0x80008000ULL < 0x100000000ULL) | |
10539 | { | |
10540 | r->r_info = ELF64_R_INFO (0, R_PPC64_REL16_HA); | |
10541 | ++r; | |
10542 | roff += 4; | |
10543 | r->r_offset = roff; | |
10544 | r->r_info = ELF64_R_INFO (0, R_PPC64_REL16_LO); | |
10545 | r->r_addend = relative_targ + roff; | |
10546 | } | |
10547 | else | |
10548 | { | |
10549 | if (off + 0x800000000000ULL < 0x1000000000000ULL) | |
10550 | r->r_info = ELF64_R_INFO (0, R_PPC64_REL16_HIGHER); | |
10551 | else | |
10552 | { | |
10553 | r->r_info = ELF64_R_INFO (0, R_PPC64_REL16_HIGHEST); | |
10554 | if (((off >> 32) & 0xffff) != 0) | |
10555 | { | |
10556 | ++r; | |
10557 | roff += 4; | |
10558 | r->r_offset = roff; | |
10559 | r->r_info = ELF64_R_INFO (0, R_PPC64_REL16_HIGHER); | |
10560 | r->r_addend = relative_targ + roff; | |
10561 | } | |
10562 | } | |
10563 | if (((off >> 32) & 0xffffffffULL) != 0) | |
10564 | roff += 4; | |
10565 | if (PPC_HI (off) != 0) | |
10566 | { | |
10567 | ++r; | |
10568 | roff += 4; | |
10569 | r->r_offset = roff; | |
10570 | r->r_info = ELF64_R_INFO (0, R_PPC64_REL16_HIGH); | |
10571 | r->r_addend = relative_targ + roff; | |
10572 | } | |
10573 | if (PPC_LO (off) != 0) | |
10574 | { | |
10575 | ++r; | |
10576 | roff += 4; | |
10577 | r->r_offset = roff; | |
10578 | r->r_info = ELF64_R_INFO (0, R_PPC64_REL16_LO); | |
10579 | r->r_addend = relative_targ + roff; | |
10580 | } | |
10581 | } | |
10582 | return r; | |
10583 | } | |
10584 | ||
04bdff6a | 10585 | static bfd_byte * |
7c1f4227 | 10586 | build_power10_offset (bfd *abfd, bfd_byte *p, bfd_vma off, int odd, |
04bdff6a AM |
10587 | bfd_boolean load) |
10588 | { | |
10589 | uint64_t insn; | |
10590 | if (off - odd + (1ULL << 33) < 1ULL << 34) | |
10591 | { | |
10592 | off -= odd; | |
10593 | if (odd) | |
10594 | { | |
10595 | bfd_put_32 (abfd, NOP, p); | |
10596 | p += 4; | |
10597 | } | |
10598 | if (load) | |
10599 | insn = PLD_R12_PC; | |
10600 | else | |
10601 | insn = PADDI_R12_PC; | |
10602 | insn |= D34 (off); | |
10603 | bfd_put_32 (abfd, insn >> 32, p); | |
10604 | p += 4; | |
10605 | bfd_put_32 (abfd, insn, p); | |
10606 | } | |
10607 | /* The minimum value for paddi is -0x200000000. The minimum value | |
10608 | for li is -0x8000, which when shifted by 34 and added gives a | |
10609 | minimum value of -0x2000200000000. The maximum value is | |
10610 | 0x1ffffffff+0x7fff<<34 which is 0x2000200000000-1. */ | |
10611 | else if (off - (8 - odd) + (0x20002ULL << 32) < 0x40004ULL << 32) | |
10612 | { | |
10613 | off -= 8 - odd; | |
10614 | bfd_put_32 (abfd, LI_R11_0 | (HA34 (off) & 0xffff), p); | |
10615 | p += 4; | |
10616 | if (!odd) | |
10617 | { | |
10618 | bfd_put_32 (abfd, SLDI_R11_R11_34, p); | |
10619 | p += 4; | |
10620 | } | |
10621 | insn = PADDI_R12_PC | D34 (off); | |
10622 | bfd_put_32 (abfd, insn >> 32, p); | |
10623 | p += 4; | |
10624 | bfd_put_32 (abfd, insn, p); | |
10625 | p += 4; | |
10626 | if (odd) | |
10627 | { | |
10628 | bfd_put_32 (abfd, SLDI_R11_R11_34, p); | |
10629 | p += 4; | |
10630 | } | |
10631 | if (load) | |
10632 | bfd_put_32 (abfd, LDX_R12_R11_R12, p); | |
10633 | else | |
10634 | bfd_put_32 (abfd, ADD_R12_R11_R12, p); | |
10635 | } | |
10636 | else | |
10637 | { | |
10638 | off -= odd + 8; | |
10639 | bfd_put_32 (abfd, LIS_R11 | ((HA34 (off) >> 16) & 0x3fff), p); | |
10640 | p += 4; | |
10641 | bfd_put_32 (abfd, ORI_R11_R11_0 | (HA34 (off) & 0xffff), p); | |
10642 | p += 4; | |
10643 | if (odd) | |
10644 | { | |
10645 | bfd_put_32 (abfd, SLDI_R11_R11_34, p); | |
10646 | p += 4; | |
10647 | } | |
10648 | insn = PADDI_R12_PC | D34 (off); | |
10649 | bfd_put_32 (abfd, insn >> 32, p); | |
10650 | p += 4; | |
10651 | bfd_put_32 (abfd, insn, p); | |
10652 | p += 4; | |
10653 | if (!odd) | |
10654 | { | |
10655 | bfd_put_32 (abfd, SLDI_R11_R11_34, p); | |
10656 | p += 4; | |
10657 | } | |
10658 | if (load) | |
10659 | bfd_put_32 (abfd, LDX_R12_R11_R12, p); | |
10660 | else | |
10661 | bfd_put_32 (abfd, ADD_R12_R11_R12, p); | |
10662 | } | |
10663 | p += 4; | |
10664 | return p; | |
10665 | } | |
10666 | ||
10667 | static unsigned int | |
7c1f4227 | 10668 | size_power10_offset (bfd_vma off, int odd) |
04bdff6a AM |
10669 | { |
10670 | if (off - odd + (1ULL << 33) < 1ULL << 34) | |
10671 | return odd + 8; | |
10672 | else if (off - (8 - odd) + (0x20002ULL << 32) < 0x40004ULL << 32) | |
10673 | return 20; | |
10674 | else | |
10675 | return 24; | |
10676 | } | |
10677 | ||
10678 | static unsigned int | |
7c1f4227 | 10679 | num_relocs_for_power10_offset (bfd_vma off, int odd) |
04bdff6a AM |
10680 | { |
10681 | if (off - odd + (1ULL << 33) < 1ULL << 34) | |
10682 | return 1; | |
10683 | else if (off - (8 - odd) + (0x20002ULL << 32) < 0x40004ULL << 32) | |
10684 | return 2; | |
10685 | else | |
10686 | return 3; | |
10687 | } | |
10688 | ||
10689 | static Elf_Internal_Rela * | |
7c1f4227 | 10690 | emit_relocs_for_power10_offset (struct bfd_link_info *info, |
04bdff6a AM |
10691 | Elf_Internal_Rela *r, bfd_vma roff, |
10692 | bfd_vma targ, bfd_vma off, int odd) | |
10693 | { | |
10694 | if (off - odd + (1ULL << 33) < 1ULL << 34) | |
10695 | roff += odd; | |
10696 | else if (off - (8 - odd) + (0x20002ULL << 32) < 0x40004ULL << 32) | |
10697 | { | |
10698 | int d_offset = bfd_big_endian (info->output_bfd) ? 2 : 0; | |
10699 | r->r_offset = roff + d_offset; | |
10700 | r->r_addend = targ + 8 - odd - d_offset; | |
10701 | r->r_info = ELF64_R_INFO (0, R_PPC64_REL16_HIGHERA34); | |
10702 | ++r; | |
10703 | roff += 8 - odd; | |
10704 | } | |
10705 | else | |
10706 | { | |
10707 | int d_offset = bfd_big_endian (info->output_bfd) ? 2 : 0; | |
10708 | r->r_offset = roff + d_offset; | |
10709 | r->r_addend = targ + 8 + odd - d_offset; | |
10710 | r->r_info = ELF64_R_INFO (0, R_PPC64_REL16_HIGHESTA34); | |
10711 | ++r; | |
10712 | roff += 4; | |
10713 | r->r_offset = roff + d_offset; | |
10714 | r->r_addend = targ + 4 + odd - d_offset; | |
10715 | r->r_info = ELF64_R_INFO (0, R_PPC64_REL16_HIGHERA34); | |
10716 | ++r; | |
10717 | roff += 4 + odd; | |
10718 | } | |
10719 | r->r_offset = roff; | |
10720 | r->r_addend = targ; | |
10721 | r->r_info = ELF64_R_INFO (0, R_PPC64_PCREL34); | |
10722 | return r; | |
10723 | } | |
10724 | ||
df136d64 AM |
10725 | /* Emit .eh_frame opcode to advance pc by DELTA. */ |
10726 | ||
10727 | static bfd_byte * | |
10728 | eh_advance (bfd *abfd, bfd_byte *eh, unsigned int delta) | |
10729 | { | |
10730 | delta /= 4; | |
10731 | if (delta < 64) | |
10732 | *eh++ = DW_CFA_advance_loc + delta; | |
10733 | else if (delta < 256) | |
10734 | { | |
10735 | *eh++ = DW_CFA_advance_loc1; | |
10736 | *eh++ = delta; | |
10737 | } | |
10738 | else if (delta < 65536) | |
10739 | { | |
10740 | *eh++ = DW_CFA_advance_loc2; | |
10741 | bfd_put_16 (abfd, delta, eh); | |
10742 | eh += 2; | |
10743 | } | |
10744 | else | |
10745 | { | |
10746 | *eh++ = DW_CFA_advance_loc4; | |
10747 | bfd_put_32 (abfd, delta, eh); | |
10748 | eh += 4; | |
10749 | } | |
10750 | return eh; | |
10751 | } | |
10752 | ||
10753 | /* Size of required .eh_frame opcode to advance pc by DELTA. */ | |
10754 | ||
10755 | static unsigned int | |
10756 | eh_advance_size (unsigned int delta) | |
10757 | { | |
10758 | if (delta < 64 * 4) | |
10759 | /* DW_CFA_advance_loc+[1..63]. */ | |
10760 | return 1; | |
10761 | if (delta < 256 * 4) | |
10762 | /* DW_CFA_advance_loc1, byte. */ | |
10763 | return 2; | |
10764 | if (delta < 65536 * 4) | |
10765 | /* DW_CFA_advance_loc2, 2 bytes. */ | |
10766 | return 3; | |
10767 | /* DW_CFA_advance_loc4, 4 bytes. */ | |
10768 | return 5; | |
10769 | } | |
10770 | ||
794e51c0 AM |
10771 | /* With power7 weakly ordered memory model, it is possible for ld.so |
10772 | to update a plt entry in one thread and have another thread see a | |
10773 | stale zero toc entry. To avoid this we need some sort of acquire | |
10774 | barrier in the call stub. One solution is to make the load of the | |
10775 | toc word seem to appear to depend on the load of the function entry | |
10776 | word. Another solution is to test for r2 being zero, and branch to | |
10777 | the appropriate glink entry if so. | |
10778 | ||
10779 | . fake dep barrier compare | |
71a39c98 AM |
10780 | . ld 12,xxx(2) ld 12,xxx(2) |
10781 | . mtctr 12 mtctr 12 | |
10782 | . xor 11,12,12 ld 2,xxx+8(2) | |
794e51c0 AM |
10783 | . add 2,2,11 cmpldi 2,0 |
10784 | . ld 2,xxx+8(2) bnectr+ | |
10785 | . bctr b <glink_entry> | |
10786 | ||
10787 | The solution involving the compare turns out to be faster, so | |
10788 | that's what we use unless the branch won't reach. */ | |
10789 | ||
10790 | #define ALWAYS_USE_FAKE_DEP 0 | |
10791 | #define ALWAYS_EMIT_R2SAVE 0 | |
5d1634d7 | 10792 | |
794e51c0 AM |
10793 | static inline unsigned int |
10794 | plt_stub_size (struct ppc_link_hash_table *htab, | |
10795 | struct ppc_stub_hash_entry *stub_entry, | |
10796 | bfd_vma off) | |
10797 | { | |
05d0e962 | 10798 | unsigned size; |
b9e5796b | 10799 | |
05d0e962 AM |
10800 | if (stub_entry->stub_type >= ppc_stub_plt_call_notoc) |
10801 | { | |
e10a07b3 | 10802 | if (htab->params->power10_stubs != 0) |
04bdff6a AM |
10803 | { |
10804 | bfd_vma start = (stub_entry->stub_offset | |
10805 | + stub_entry->group->stub_sec->output_offset | |
10806 | + stub_entry->group->stub_sec->output_section->vma); | |
10807 | if (stub_entry->stub_type > ppc_stub_plt_call_notoc) | |
10808 | start += 4; | |
7c1f4227 | 10809 | size = 8 + size_power10_offset (off, start & 4); |
04bdff6a AM |
10810 | } |
10811 | else | |
10812 | size = 8 + size_offset (off - 8); | |
05d0e962 AM |
10813 | if (stub_entry->stub_type > ppc_stub_plt_call_notoc) |
10814 | size += 4; | |
10815 | return size; | |
10816 | } | |
10817 | ||
10818 | size = 12; | |
b9e5796b AM |
10819 | if (ALWAYS_EMIT_R2SAVE |
10820 | || stub_entry->stub_type == ppc_stub_plt_call_r2save) | |
10821 | size += 4; | |
10822 | if (PPC_HA (off) != 0) | |
794e51c0 | 10823 | size += 4; |
b9e5796b AM |
10824 | if (htab->opd_abi) |
10825 | { | |
10826 | size += 4; | |
e7d1c40c | 10827 | if (htab->params->plt_static_chain) |
b9e5796b | 10828 | size += 4; |
bd4d2eaa AM |
10829 | if (htab->params->plt_thread_safe |
10830 | && htab->elf.dynamic_sections_created | |
10831 | && stub_entry->h != NULL | |
10832 | && stub_entry->h->elf.dynindx != -1) | |
b9e5796b | 10833 | size += 8; |
e7d1c40c | 10834 | if (PPC_HA (off + 8 + 8 * htab->params->plt_static_chain) != PPC_HA (off)) |
b9e5796b AM |
10835 | size += 4; |
10836 | } | |
794e51c0 | 10837 | if (stub_entry->h != NULL |
ed7007c1 | 10838 | && is_tls_get_addr (&stub_entry->h->elf, htab) |
7c9cf415 | 10839 | && htab->params->tls_get_addr_opt) |
f378ab09 | 10840 | { |
9e7028aa AM |
10841 | if (htab->params->no_tls_get_addr_regsave) |
10842 | { | |
10843 | size += 7 * 4; | |
10844 | if (stub_entry->stub_type == ppc_stub_plt_call_r2save) | |
10845 | size += 6 * 4; | |
10846 | } | |
10847 | else | |
10848 | { | |
10849 | size += 30 * 4; | |
10850 | if (stub_entry->stub_type == ppc_stub_plt_call_r2save) | |
10851 | size += 4; | |
10852 | } | |
f378ab09 | 10853 | } |
794e51c0 AM |
10854 | return size; |
10855 | } | |
10856 | ||
2420fff6 AM |
10857 | /* Depending on the sign of plt_stub_align: |
10858 | If positive, return the padding to align to a 2**plt_stub_align | |
10859 | boundary. | |
10860 | If negative, if this stub would cross fewer 2**plt_stub_align | |
10861 | boundaries if we align, then return the padding needed to do so. */ | |
10862 | ||
794e51c0 AM |
10863 | static inline unsigned int |
10864 | plt_stub_pad (struct ppc_link_hash_table *htab, | |
10865 | struct ppc_stub_hash_entry *stub_entry, | |
10866 | bfd_vma plt_off) | |
10867 | { | |
2420fff6 | 10868 | int stub_align; |
1aa42141 | 10869 | unsigned stub_size; |
6f20ed8a | 10870 | bfd_vma stub_off = stub_entry->group->stub_sec->size; |
794e51c0 | 10871 | |
2420fff6 AM |
10872 | if (htab->params->plt_stub_align >= 0) |
10873 | { | |
10874 | stub_align = 1 << htab->params->plt_stub_align; | |
10875 | if ((stub_off & (stub_align - 1)) != 0) | |
10876 | return stub_align - (stub_off & (stub_align - 1)); | |
10877 | return 0; | |
10878 | } | |
10879 | ||
10880 | stub_align = 1 << -htab->params->plt_stub_align; | |
1aa42141 | 10881 | stub_size = plt_stub_size (htab, stub_entry, plt_off); |
794e51c0 | 10882 | if (((stub_off + stub_size - 1) & -stub_align) - (stub_off & -stub_align) |
e05fa0ba | 10883 | > ((stub_size - 1) & -stub_align)) |
794e51c0 AM |
10884 | return stub_align - (stub_off & (stub_align - 1)); |
10885 | return 0; | |
10886 | } | |
10887 | ||
10888 | /* Build a .plt call stub. */ | |
10889 | ||
10890 | static inline bfd_byte * | |
10891 | build_plt_stub (struct ppc_link_hash_table *htab, | |
10892 | struct ppc_stub_hash_entry *stub_entry, | |
10893 | bfd_byte *p, bfd_vma offset, Elf_Internal_Rela *r) | |
10894 | { | |
e7d1c40c | 10895 | bfd *obfd = htab->params->stub_bfd; |
b9e5796b | 10896 | bfd_boolean plt_load_toc = htab->opd_abi; |
e7d1c40c | 10897 | bfd_boolean plt_static_chain = htab->params->plt_static_chain; |
bd4d2eaa AM |
10898 | bfd_boolean plt_thread_safe = (htab->params->plt_thread_safe |
10899 | && htab->elf.dynamic_sections_created | |
10900 | && stub_entry->h != NULL | |
10901 | && stub_entry->h->elf.dynindx != -1); | |
794e51c0 AM |
10902 | bfd_boolean use_fake_dep = plt_thread_safe; |
10903 | bfd_vma cmp_branch_off = 0; | |
10904 | ||
10905 | if (!ALWAYS_USE_FAKE_DEP | |
b9e5796b | 10906 | && plt_load_toc |
794e51c0 | 10907 | && plt_thread_safe |
ed7007c1 | 10908 | && !(is_tls_get_addr (&stub_entry->h->elf, htab) |
7c9cf415 | 10909 | && htab->params->tls_get_addr_opt)) |
794e51c0 AM |
10910 | { |
10911 | bfd_vma pltoff = stub_entry->plt_ent->plt.offset & ~1; | |
b9e5796b AM |
10912 | bfd_vma pltindex = ((pltoff - PLT_INITIAL_ENTRY_SIZE (htab)) |
10913 | / PLT_ENTRY_SIZE (htab)); | |
9e390558 | 10914 | bfd_vma glinkoff = GLINK_PLTRESOLVE_SIZE (htab) + pltindex * 8; |
794e51c0 AM |
10915 | bfd_vma to, from; |
10916 | ||
68d62958 AM |
10917 | if (pltindex > 32768) |
10918 | glinkoff += (pltindex - 32768) * 4; | |
794e51c0 AM |
10919 | to = (glinkoff |
10920 | + htab->glink->output_offset | |
10921 | + htab->glink->output_section->vma); | |
6f20ed8a | 10922 | from = (p - stub_entry->group->stub_sec->contents |
794e51c0 AM |
10923 | + 4 * (ALWAYS_EMIT_R2SAVE |
10924 | || stub_entry->stub_type == ppc_stub_plt_call_r2save) | |
10925 | + 4 * (PPC_HA (offset) != 0) | |
10926 | + 4 * (PPC_HA (offset + 8 + 8 * plt_static_chain) | |
10927 | != PPC_HA (offset)) | |
10928 | + 4 * (plt_static_chain != 0) | |
10929 | + 20 | |
6f20ed8a AM |
10930 | + stub_entry->group->stub_sec->output_offset |
10931 | + stub_entry->group->stub_sec->output_section->vma); | |
794e51c0 AM |
10932 | cmp_branch_off = to - from; |
10933 | use_fake_dep = cmp_branch_off + (1 << 25) >= (1 << 26); | |
10934 | } | |
10935 | ||
ac2df442 AM |
10936 | if (PPC_HA (offset) != 0) |
10937 | { | |
176a0d42 AM |
10938 | if (r != NULL) |
10939 | { | |
794e51c0 AM |
10940 | if (ALWAYS_EMIT_R2SAVE |
10941 | || stub_entry->stub_type == ppc_stub_plt_call_r2save) | |
10942 | r[0].r_offset += 4; | |
176a0d42 | 10943 | r[0].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_HA); |
3b421ab3 | 10944 | r[1].r_offset = r[0].r_offset + 4; |
176a0d42 AM |
10945 | r[1].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS); |
10946 | r[1].r_addend = r[0].r_addend; | |
b9e5796b | 10947 | if (plt_load_toc) |
176a0d42 | 10948 | { |
b9e5796b | 10949 | if (PPC_HA (offset + 8 + 8 * plt_static_chain) != PPC_HA (offset)) |
c7131b65 | 10950 | { |
b9e5796b AM |
10951 | r[2].r_offset = r[1].r_offset + 4; |
10952 | r[2].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_LO); | |
10953 | r[2].r_addend = r[0].r_addend; | |
10954 | } | |
10955 | else | |
10956 | { | |
10957 | r[2].r_offset = r[1].r_offset + 8 + 8 * use_fake_dep; | |
10958 | r[2].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS); | |
10959 | r[2].r_addend = r[0].r_addend + 8; | |
10960 | if (plt_static_chain) | |
10961 | { | |
10962 | r[3].r_offset = r[2].r_offset + 4; | |
10963 | r[3].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS); | |
10964 | r[3].r_addend = r[0].r_addend + 16; | |
10965 | } | |
c7131b65 | 10966 | } |
176a0d42 AM |
10967 | } |
10968 | } | |
794e51c0 AM |
10969 | if (ALWAYS_EMIT_R2SAVE |
10970 | || stub_entry->stub_type == ppc_stub_plt_call_r2save) | |
a078d95a | 10971 | bfd_put_32 (obfd, STD_R2_0R1 + STK_TOC (htab), p), p += 4; |
397998fc AM |
10972 | if (plt_load_toc) |
10973 | { | |
10974 | bfd_put_32 (obfd, ADDIS_R11_R2 | PPC_HA (offset), p), p += 4; | |
10975 | bfd_put_32 (obfd, LD_R12_0R11 | PPC_LO (offset), p), p += 4; | |
10976 | } | |
10977 | else | |
10978 | { | |
10979 | bfd_put_32 (obfd, ADDIS_R12_R2 | PPC_HA (offset), p), p += 4; | |
10980 | bfd_put_32 (obfd, LD_R12_0R12 | PPC_LO (offset), p), p += 4; | |
10981 | } | |
b9e5796b AM |
10982 | if (plt_load_toc |
10983 | && PPC_HA (offset + 8 + 8 * plt_static_chain) != PPC_HA (offset)) | |
ac2df442 | 10984 | { |
71a39c98 | 10985 | bfd_put_32 (obfd, ADDI_R11_R11 | PPC_LO (offset), p), p += 4; |
ac2df442 AM |
10986 | offset = 0; |
10987 | } | |
71a39c98 | 10988 | bfd_put_32 (obfd, MTCTR_R12, p), p += 4; |
b9e5796b | 10989 | if (plt_load_toc) |
794e51c0 | 10990 | { |
b9e5796b AM |
10991 | if (use_fake_dep) |
10992 | { | |
10993 | bfd_put_32 (obfd, XOR_R2_R12_R12, p), p += 4; | |
10994 | bfd_put_32 (obfd, ADD_R11_R11_R2, p), p += 4; | |
10995 | } | |
10996 | bfd_put_32 (obfd, LD_R2_0R11 | PPC_LO (offset + 8), p), p += 4; | |
10997 | if (plt_static_chain) | |
10998 | bfd_put_32 (obfd, LD_R11_0R11 | PPC_LO (offset + 16), p), p += 4; | |
794e51c0 | 10999 | } |
ac2df442 AM |
11000 | } |
11001 | else | |
11002 | { | |
176a0d42 AM |
11003 | if (r != NULL) |
11004 | { | |
794e51c0 AM |
11005 | if (ALWAYS_EMIT_R2SAVE |
11006 | || stub_entry->stub_type == ppc_stub_plt_call_r2save) | |
11007 | r[0].r_offset += 4; | |
176a0d42 | 11008 | r[0].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_DS); |
b9e5796b | 11009 | if (plt_load_toc) |
176a0d42 | 11010 | { |
b9e5796b | 11011 | if (PPC_HA (offset + 8 + 8 * plt_static_chain) != PPC_HA (offset)) |
c7131b65 | 11012 | { |
b9e5796b AM |
11013 | r[1].r_offset = r[0].r_offset + 4; |
11014 | r[1].r_info = ELF64_R_INFO (0, R_PPC64_TOC16); | |
11015 | r[1].r_addend = r[0].r_addend; | |
11016 | } | |
11017 | else | |
11018 | { | |
11019 | r[1].r_offset = r[0].r_offset + 8 + 8 * use_fake_dep; | |
11020 | r[1].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_DS); | |
11021 | r[1].r_addend = r[0].r_addend + 8 + 8 * plt_static_chain; | |
11022 | if (plt_static_chain) | |
11023 | { | |
11024 | r[2].r_offset = r[1].r_offset + 4; | |
11025 | r[2].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_DS); | |
11026 | r[2].r_addend = r[0].r_addend + 8; | |
11027 | } | |
c7131b65 | 11028 | } |
176a0d42 AM |
11029 | } |
11030 | } | |
794e51c0 AM |
11031 | if (ALWAYS_EMIT_R2SAVE |
11032 | || stub_entry->stub_type == ppc_stub_plt_call_r2save) | |
a078d95a | 11033 | bfd_put_32 (obfd, STD_R2_0R1 + STK_TOC (htab), p), p += 4; |
71a39c98 | 11034 | bfd_put_32 (obfd, LD_R12_0R2 | PPC_LO (offset), p), p += 4; |
b9e5796b AM |
11035 | if (plt_load_toc |
11036 | && PPC_HA (offset + 8 + 8 * plt_static_chain) != PPC_HA (offset)) | |
ac2df442 AM |
11037 | { |
11038 | bfd_put_32 (obfd, ADDI_R2_R2 | PPC_LO (offset), p), p += 4; | |
11039 | offset = 0; | |
11040 | } | |
71a39c98 | 11041 | bfd_put_32 (obfd, MTCTR_R12, p), p += 4; |
b9e5796b | 11042 | if (plt_load_toc) |
794e51c0 | 11043 | { |
b9e5796b AM |
11044 | if (use_fake_dep) |
11045 | { | |
11046 | bfd_put_32 (obfd, XOR_R11_R12_R12, p), p += 4; | |
11047 | bfd_put_32 (obfd, ADD_R2_R2_R11, p), p += 4; | |
11048 | } | |
11049 | if (plt_static_chain) | |
11050 | bfd_put_32 (obfd, LD_R11_0R2 | PPC_LO (offset + 16), p), p += 4; | |
11051 | bfd_put_32 (obfd, LD_R2_0R2 | PPC_LO (offset + 8), p), p += 4; | |
794e51c0 | 11052 | } |
ac2df442 | 11053 | } |
b9e5796b | 11054 | if (plt_load_toc && plt_thread_safe && !use_fake_dep) |
794e51c0 AM |
11055 | { |
11056 | bfd_put_32 (obfd, CMPLDI_R2_0, p), p += 4; | |
11057 | bfd_put_32 (obfd, BNECTR_P4, p), p += 4; | |
22aa0c7e | 11058 | bfd_put_32 (obfd, B_DOT | (cmp_branch_off & 0x3fffffc), p), p += 4; |
794e51c0 AM |
11059 | } |
11060 | else | |
407aa07c | 11061 | bfd_put_32 (obfd, BCTR, p), p += 4; |
5d1634d7 AM |
11062 | return p; |
11063 | } | |
11064 | ||
a7f2871e AM |
11065 | /* Build a special .plt call stub for __tls_get_addr. */ |
11066 | ||
b9ca1af6 | 11067 | #define LD_R0_0R3 0xe8030000 |
a7f2871e AM |
11068 | #define LD_R12_0R3 0xe9830000 |
11069 | #define MR_R0_R3 0x7c601b78 | |
b9ca1af6 | 11070 | #define CMPDI_R0_0 0x2c200000 |
a7f2871e AM |
11071 | #define ADD_R3_R12_R13 0x7c6c6a14 |
11072 | #define BEQLR 0x4d820020 | |
11073 | #define MR_R3_R0 0x7c030378 | |
a7f2871e | 11074 | #define BCTRL 0x4e800421 |
a7f2871e AM |
11075 | |
11076 | static inline bfd_byte * | |
794e51c0 AM |
11077 | build_tls_get_addr_stub (struct ppc_link_hash_table *htab, |
11078 | struct ppc_stub_hash_entry *stub_entry, | |
11079 | bfd_byte *p, bfd_vma offset, Elf_Internal_Rela *r) | |
a7f2871e | 11080 | { |
e7d1c40c | 11081 | bfd *obfd = htab->params->stub_bfd; |
df136d64 | 11082 | bfd_byte *loc = p; |
9e7028aa | 11083 | unsigned int i; |
794e51c0 | 11084 | |
b9ca1af6 | 11085 | bfd_put_32 (obfd, LD_R0_0R3 + 0, p), p += 4; |
a7f2871e | 11086 | bfd_put_32 (obfd, LD_R12_0R3 + 8, p), p += 4; |
b9ca1af6 | 11087 | bfd_put_32 (obfd, CMPDI_R0_0, p), p += 4; |
a7f2871e | 11088 | bfd_put_32 (obfd, MR_R0_R3, p), p += 4; |
a7f2871e AM |
11089 | bfd_put_32 (obfd, ADD_R3_R12_R13, p), p += 4; |
11090 | bfd_put_32 (obfd, BEQLR, p), p += 4; | |
11091 | bfd_put_32 (obfd, MR_R3_R0, p), p += 4; | |
9e7028aa AM |
11092 | if (htab->params->no_tls_get_addr_regsave) |
11093 | { | |
11094 | if (r != NULL) | |
11095 | r[0].r_offset += 7 * 4; | |
11096 | if (stub_entry->stub_type != ppc_stub_plt_call_r2save) | |
11097 | return build_plt_stub (htab, stub_entry, p, offset, r); | |
11098 | ||
11099 | bfd_put_32 (obfd, MFLR_R0, p); | |
11100 | p += 4; | |
11101 | bfd_put_32 (obfd, STD_R0_0R1 + STK_LINKER (htab), p); | |
11102 | p += 4; | |
11103 | ||
11104 | if (r != NULL) | |
11105 | r[0].r_offset += 2 * 4; | |
11106 | p = build_plt_stub (htab, stub_entry, p, offset, r); | |
11107 | bfd_put_32 (obfd, BCTRL, p - 4); | |
11108 | ||
11109 | bfd_put_32 (obfd, LD_R2_0R1 + STK_TOC (htab), p); | |
11110 | p += 4; | |
11111 | bfd_put_32 (obfd, LD_R0_0R1 + STK_LINKER (htab), p); | |
11112 | p += 4; | |
11113 | bfd_put_32 (obfd, MTLR_R0, p); | |
11114 | p += 4; | |
11115 | bfd_put_32 (obfd, BLR, p); | |
11116 | p += 4; | |
11117 | } | |
11118 | else | |
11119 | { | |
11120 | p = tls_get_addr_prologue (obfd, p, htab); | |
f378ab09 | 11121 | |
9e7028aa AM |
11122 | if (r != NULL) |
11123 | r[0].r_offset += 18 * 4; | |
a7f2871e | 11124 | |
9e7028aa AM |
11125 | p = build_plt_stub (htab, stub_entry, p, offset, r); |
11126 | bfd_put_32 (obfd, BCTRL, p - 4); | |
11127 | ||
11128 | if (stub_entry->stub_type == ppc_stub_plt_call_r2save) | |
11129 | { | |
11130 | bfd_put_32 (obfd, LD_R2_0R1 + STK_TOC (htab), p); | |
11131 | p += 4; | |
11132 | } | |
a7f2871e | 11133 | |
9e7028aa AM |
11134 | p = tls_get_addr_epilogue (obfd, p, htab); |
11135 | } | |
a7f2871e | 11136 | |
df136d64 AM |
11137 | if (htab->glink_eh_frame != NULL |
11138 | && htab->glink_eh_frame->size != 0) | |
11139 | { | |
11140 | bfd_byte *base, *eh; | |
df136d64 AM |
11141 | |
11142 | base = htab->glink_eh_frame->contents + stub_entry->group->eh_base + 17; | |
11143 | eh = base + stub_entry->group->eh_size; | |
9e7028aa AM |
11144 | if (htab->params->no_tls_get_addr_regsave) |
11145 | { | |
11146 | unsigned int lr_used, delta; | |
11147 | lr_used = stub_entry->stub_offset + (p - 20 - loc); | |
11148 | delta = lr_used - stub_entry->group->lr_restore; | |
11149 | stub_entry->group->lr_restore = lr_used + 16; | |
11150 | eh = eh_advance (htab->elf.dynobj, eh, delta); | |
11151 | *eh++ = DW_CFA_offset_extended_sf; | |
11152 | *eh++ = 65; | |
11153 | *eh++ = -(STK_LINKER (htab) / 8) & 0x7f; | |
11154 | *eh++ = DW_CFA_advance_loc + 4; | |
11155 | } | |
11156 | else | |
11157 | { | |
11158 | unsigned int cfa_updt, delta; | |
11159 | /* After the bctrl, lr has been modified so we need to emit | |
11160 | .eh_frame info saying the return address is on the stack. In | |
11161 | fact we must put the EH info at or before the call rather | |
11162 | than after it, because the EH info for a call needs to be | |
11163 | specified by that point. | |
11164 | See libgcc/unwind-dw2.c execute_cfa_program. | |
11165 | Any stack pointer update must be described immediately after | |
11166 | the instruction making the change, and since the stdu occurs | |
11167 | after saving regs we put all the reg saves and the cfa | |
11168 | change there. */ | |
11169 | cfa_updt = stub_entry->stub_offset + 18 * 4; | |
11170 | delta = cfa_updt - stub_entry->group->lr_restore; | |
11171 | stub_entry->group->lr_restore | |
11172 | = stub_entry->stub_offset + (p - loc) - 4; | |
11173 | eh = eh_advance (htab->elf.dynobj, eh, delta); | |
11174 | *eh++ = DW_CFA_def_cfa_offset; | |
11175 | if (htab->opd_abi) | |
11176 | { | |
11177 | *eh++ = 128; | |
11178 | *eh++ = 1; | |
11179 | } | |
11180 | else | |
11181 | *eh++ = 96; | |
11182 | *eh++ = DW_CFA_offset_extended_sf; | |
11183 | *eh++ = 65; | |
11184 | *eh++ = (-16 / 8) & 0x7f; | |
11185 | for (i = 4; i < 12; i++) | |
11186 | { | |
11187 | *eh++ = DW_CFA_offset + i; | |
11188 | *eh++ = (htab->opd_abi ? 13 : 12) - i; | |
11189 | } | |
11190 | *eh++ = (DW_CFA_advance_loc | |
11191 | + (stub_entry->group->lr_restore - 8 - cfa_updt) / 4); | |
11192 | *eh++ = DW_CFA_def_cfa_offset; | |
11193 | *eh++ = 0; | |
11194 | for (i = 4; i < 12; i++) | |
11195 | *eh++ = DW_CFA_restore + i; | |
11196 | *eh++ = DW_CFA_advance_loc + 2; | |
11197 | } | |
df136d64 AM |
11198 | *eh++ = DW_CFA_restore_extended; |
11199 | *eh++ = 65; | |
11200 | stub_entry->group->eh_size = eh - base; | |
11201 | } | |
a7f2871e AM |
11202 | return p; |
11203 | } | |
11204 | ||
176a0d42 AM |
11205 | static Elf_Internal_Rela * |
11206 | get_relocs (asection *sec, int count) | |
11207 | { | |
11208 | Elf_Internal_Rela *relocs; | |
11209 | struct bfd_elf_section_data *elfsec_data; | |
11210 | ||
11211 | elfsec_data = elf_section_data (sec); | |
11212 | relocs = elfsec_data->relocs; | |
11213 | if (relocs == NULL) | |
11214 | { | |
11215 | bfd_size_type relsize; | |
11216 | relsize = sec->reloc_count * sizeof (*relocs); | |
11217 | relocs = bfd_alloc (sec->owner, relsize); | |
11218 | if (relocs == NULL) | |
11219 | return NULL; | |
11220 | elfsec_data->relocs = relocs; | |
d4730f92 BS |
11221 | elfsec_data->rela.hdr = bfd_zalloc (sec->owner, |
11222 | sizeof (Elf_Internal_Shdr)); | |
11223 | if (elfsec_data->rela.hdr == NULL) | |
11224 | return NULL; | |
11225 | elfsec_data->rela.hdr->sh_size = (sec->reloc_count | |
11226 | * sizeof (Elf64_External_Rela)); | |
11227 | elfsec_data->rela.hdr->sh_entsize = sizeof (Elf64_External_Rela); | |
176a0d42 AM |
11228 | sec->reloc_count = 0; |
11229 | } | |
11230 | relocs += sec->reloc_count; | |
11231 | sec->reloc_count += count; | |
11232 | return relocs; | |
11233 | } | |
11234 | ||
3d58e1fc AM |
11235 | /* Convert the relocs R[0] thru R[-NUM_REL+1], which are all no-symbol |
11236 | forms, to the equivalent relocs against the global symbol given by | |
11237 | STUB_ENTRY->H. */ | |
11238 | ||
11239 | static bfd_boolean | |
11240 | use_global_in_relocs (struct ppc_link_hash_table *htab, | |
11241 | struct ppc_stub_hash_entry *stub_entry, | |
11242 | Elf_Internal_Rela *r, unsigned int num_rel) | |
11243 | { | |
11244 | struct elf_link_hash_entry **hashes; | |
11245 | unsigned long symndx; | |
11246 | struct ppc_link_hash_entry *h; | |
11247 | bfd_vma symval; | |
11248 | ||
11249 | /* Relocs are always against symbols in their own object file. Fake | |
11250 | up global sym hashes for the stub bfd (which has no symbols). */ | |
11251 | hashes = elf_sym_hashes (htab->params->stub_bfd); | |
11252 | if (hashes == NULL) | |
11253 | { | |
11254 | bfd_size_type hsize; | |
11255 | ||
11256 | /* When called the first time, stub_globals will contain the | |
11257 | total number of symbols seen during stub sizing. After | |
11258 | allocating, stub_globals is used as an index to fill the | |
11259 | hashes array. */ | |
11260 | hsize = (htab->stub_globals + 1) * sizeof (*hashes); | |
11261 | hashes = bfd_zalloc (htab->params->stub_bfd, hsize); | |
11262 | if (hashes == NULL) | |
11263 | return FALSE; | |
11264 | elf_sym_hashes (htab->params->stub_bfd) = hashes; | |
11265 | htab->stub_globals = 1; | |
11266 | } | |
11267 | symndx = htab->stub_globals++; | |
11268 | h = stub_entry->h; | |
11269 | hashes[symndx] = &h->elf; | |
11270 | if (h->oh != NULL && h->oh->is_func) | |
11271 | h = ppc_follow_link (h->oh); | |
11272 | BFD_ASSERT (h->elf.root.type == bfd_link_hash_defined | |
11273 | || h->elf.root.type == bfd_link_hash_defweak); | |
ed7007c1 | 11274 | symval = defined_sym_val (&h->elf); |
3d58e1fc AM |
11275 | while (num_rel-- != 0) |
11276 | { | |
11277 | r->r_info = ELF64_R_INFO (symndx, ELF64_R_TYPE (r->r_info)); | |
11278 | if (h->elf.root.u.def.section != stub_entry->target_section) | |
11279 | { | |
11280 | /* H is an opd symbol. The addend must be zero, and the | |
11281 | branch reloc is the only one we can convert. */ | |
11282 | r->r_addend = 0; | |
11283 | break; | |
11284 | } | |
11285 | else | |
11286 | r->r_addend -= symval; | |
11287 | --r; | |
11288 | } | |
11289 | return TRUE; | |
11290 | } | |
11291 | ||
aa374f67 | 11292 | static bfd_vma |
25f53a85 | 11293 | get_r2off (struct bfd_link_info *info, |
aa374f67 AM |
11294 | struct ppc_stub_hash_entry *stub_entry) |
11295 | { | |
25f53a85 | 11296 | struct ppc_link_hash_table *htab = ppc_hash_table (info); |
6f20ed8a | 11297 | bfd_vma r2off = htab->sec_info[stub_entry->target_section->id].toc_off; |
aa374f67 AM |
11298 | |
11299 | if (r2off == 0) | |
11300 | { | |
11301 | /* Support linking -R objects. Get the toc pointer from the | |
11302 | opd entry. */ | |
11303 | char buf[8]; | |
b9e5796b AM |
11304 | if (!htab->opd_abi) |
11305 | return r2off; | |
aa374f67 AM |
11306 | asection *opd = stub_entry->h->elf.root.u.def.section; |
11307 | bfd_vma opd_off = stub_entry->h->elf.root.u.def.value; | |
11308 | ||
11309 | if (strcmp (opd->name, ".opd") != 0 | |
11310 | || opd->reloc_count != 0) | |
11311 | { | |
2cdcc330 AM |
11312 | info->callbacks->einfo |
11313 | (_("%P: cannot find opd entry toc for `%pT'\n"), | |
11314 | stub_entry->h->elf.root.root.string); | |
aa374f67 | 11315 | bfd_set_error (bfd_error_bad_value); |
a7c49797 | 11316 | return (bfd_vma) -1; |
aa374f67 AM |
11317 | } |
11318 | if (!bfd_get_section_contents (opd->owner, opd, buf, opd_off + 8, 8)) | |
a7c49797 | 11319 | return (bfd_vma) -1; |
aa374f67 | 11320 | r2off = bfd_get_64 (opd->owner, buf); |
25f53a85 | 11321 | r2off -= elf_gp (info->output_bfd); |
aa374f67 | 11322 | } |
6f20ed8a | 11323 | r2off -= htab->sec_info[stub_entry->group->link_sec->id].toc_off; |
aa374f67 AM |
11324 | return r2off; |
11325 | } | |
11326 | ||
b34976b6 | 11327 | static bfd_boolean |
4ce794b7 | 11328 | ppc_build_one_stub (struct bfd_hash_entry *gen_entry, void *in_arg) |
5d1634d7 | 11329 | { |
721956f4 AM |
11330 | struct ppc_stub_hash_entry *stub_entry; |
11331 | struct ppc_branch_hash_entry *br_entry; | |
5d1634d7 AM |
11332 | struct bfd_link_info *info; |
11333 | struct ppc_link_hash_table *htab; | |
721956f4 | 11334 | bfd_byte *loc; |
3d58e1fc | 11335 | bfd_byte *p, *relp; |
1aa42141 | 11336 | bfd_vma targ, off; |
176a0d42 | 11337 | Elf_Internal_Rela *r; |
e054468f | 11338 | asection *plt; |
3d58e1fc | 11339 | int num_rel; |
04bdff6a | 11340 | int odd; |
5d1634d7 | 11341 | |
721956f4 AM |
11342 | /* Massage our args to the form they really have. */ |
11343 | stub_entry = (struct ppc_stub_hash_entry *) gen_entry; | |
4ce794b7 | 11344 | info = in_arg; |
5d1634d7 | 11345 | |
abf874aa CL |
11346 | /* Fail if the target section could not be assigned to an output |
11347 | section. The user should fix his linker script. */ | |
11348 | if (stub_entry->target_section != NULL | |
11349 | && stub_entry->target_section->output_section == NULL | |
11350 | && info->non_contiguous_regions) | |
53215f21 CL |
11351 | info->callbacks->einfo (_("%F%P: Could not assign '%pA' to an output section. " |
11352 | "Retry without --enable-non-contiguous-regions.\n"), | |
11353 | stub_entry->target_section); | |
abf874aa CL |
11354 | |
11355 | /* Same for the group. */ | |
11356 | if (stub_entry->group->stub_sec != NULL | |
11357 | && stub_entry->group->stub_sec->output_section == NULL | |
11358 | && info->non_contiguous_regions) | |
53215f21 CL |
11359 | info->callbacks->einfo (_("%F%P: Could not assign group %pA target %pA to an " |
11360 | "output section. Retry without " | |
11361 | "--enable-non-contiguous-regions.\n"), | |
11362 | stub_entry->group->stub_sec, | |
11363 | stub_entry->target_section); | |
abf874aa | 11364 | |
5d1634d7 | 11365 | htab = ppc_hash_table (info); |
4dfe6ac6 NC |
11366 | if (htab == NULL) |
11367 | return FALSE; | |
5d1634d7 | 11368 | |
1aa42141 | 11369 | BFD_ASSERT (stub_entry->stub_offset >= stub_entry->group->stub_sec->size); |
6f20ed8a | 11370 | loc = stub_entry->group->stub_sec->contents + stub_entry->stub_offset; |
721956f4 | 11371 | |
4ce794b7 | 11372 | htab->stub_count[stub_entry->stub_type - 1] += 1; |
721956f4 | 11373 | switch (stub_entry->stub_type) |
5d1634d7 | 11374 | { |
721956f4 | 11375 | case ppc_stub_long_branch: |
ad8e1ba5 | 11376 | case ppc_stub_long_branch_r2off: |
721956f4 | 11377 | /* Branches are relative. This is where we are going to. */ |
1aa42141 | 11378 | targ = (stub_entry->target_value |
6911b7dc AM |
11379 | + stub_entry->target_section->output_offset |
11380 | + stub_entry->target_section->output_section->vma); | |
1aa42141 | 11381 | targ += PPC64_LOCAL_ENTRY_OFFSET (stub_entry->other); |
5d1634d7 | 11382 | |
721956f4 | 11383 | /* And this is where we are coming from. */ |
1aa42141 AM |
11384 | off = (stub_entry->stub_offset |
11385 | + stub_entry->group->stub_sec->output_offset | |
11386 | + stub_entry->group->stub_sec->output_section->vma); | |
11387 | off = targ - off; | |
e86ce104 | 11388 | |
9e390558 | 11389 | p = loc; |
ac2df442 | 11390 | if (stub_entry->stub_type == ppc_stub_long_branch_r2off) |
ad8e1ba5 | 11391 | { |
25f53a85 | 11392 | bfd_vma r2off = get_r2off (info, stub_entry); |
ad8e1ba5 | 11393 | |
a7c49797 | 11394 | if (r2off == (bfd_vma) -1) |
aa374f67 AM |
11395 | { |
11396 | htab->stub_error = TRUE; | |
11397 | return FALSE; | |
11398 | } | |
9e390558 AM |
11399 | bfd_put_32 (htab->params->stub_bfd, STD_R2_0R1 + STK_TOC (htab), p); |
11400 | p += 4; | |
ac2df442 AM |
11401 | if (PPC_HA (r2off) != 0) |
11402 | { | |
e7d1c40c | 11403 | bfd_put_32 (htab->params->stub_bfd, |
9e390558 AM |
11404 | ADDIS_R2_R2 | PPC_HA (r2off), p); |
11405 | p += 4; | |
a7c49797 AM |
11406 | } |
11407 | if (PPC_LO (r2off) != 0) | |
11408 | { | |
11409 | bfd_put_32 (htab->params->stub_bfd, | |
9e390558 AM |
11410 | ADDI_R2_R2 | PPC_LO (r2off), p); |
11411 | p += 4; | |
ac2df442 | 11412 | } |
9e390558 | 11413 | off -= p - loc; |
ad8e1ba5 | 11414 | } |
9e390558 AM |
11415 | bfd_put_32 (htab->params->stub_bfd, B_DOT | (off & 0x3fffffc), p); |
11416 | p += 4; | |
ad8e1ba5 | 11417 | |
5c3dead3 AM |
11418 | if (off + (1 << 25) >= (bfd_vma) (1 << 26)) |
11419 | { | |
cf97bcb0 AM |
11420 | _bfd_error_handler |
11421 | (_("long branch stub `%s' offset overflow"), | |
bc30df16 | 11422 | stub_entry->root.string); |
5c3dead3 AM |
11423 | htab->stub_error = TRUE; |
11424 | return FALSE; | |
11425 | } | |
ee75fd95 AM |
11426 | |
11427 | if (info->emitrelocations) | |
11428 | { | |
6f20ed8a | 11429 | r = get_relocs (stub_entry->group->stub_sec, 1); |
176a0d42 AM |
11430 | if (r == NULL) |
11431 | return FALSE; | |
9e390558 | 11432 | r->r_offset = p - 4 - stub_entry->group->stub_sec->contents; |
ee75fd95 | 11433 | r->r_info = ELF64_R_INFO (0, R_PPC64_REL24); |
1aa42141 | 11434 | r->r_addend = targ; |
3d58e1fc AM |
11435 | if (stub_entry->h != NULL |
11436 | && !use_global_in_relocs (htab, stub_entry, r, 1)) | |
11437 | return FALSE; | |
ee75fd95 | 11438 | } |
721956f4 | 11439 | break; |
e86ce104 | 11440 | |
721956f4 | 11441 | case ppc_stub_plt_branch: |
ad8e1ba5 | 11442 | case ppc_stub_plt_branch_r2off: |
721956f4 AM |
11443 | br_entry = ppc_branch_hash_lookup (&htab->branch_hash_table, |
11444 | stub_entry->root.string + 9, | |
b34976b6 | 11445 | FALSE, FALSE); |
721956f4 AM |
11446 | if (br_entry == NULL) |
11447 | { | |
cf97bcb0 AM |
11448 | _bfd_error_handler (_("can't find branch stub `%s'"), |
11449 | stub_entry->root.string); | |
b34976b6 AM |
11450 | htab->stub_error = TRUE; |
11451 | return FALSE; | |
721956f4 AM |
11452 | } |
11453 | ||
1aa42141 | 11454 | targ = (stub_entry->target_value |
176a0d42 AM |
11455 | + stub_entry->target_section->output_offset |
11456 | + stub_entry->target_section->output_section->vma); | |
6911b7dc | 11457 | if (stub_entry->stub_type != ppc_stub_plt_branch_r2off) |
1aa42141 | 11458 | targ += PPC64_LOCAL_ENTRY_OFFSET (stub_entry->other); |
721956f4 | 11459 | |
1aa42141 | 11460 | bfd_put_64 (htab->brlt->owner, targ, |
4ce794b7 | 11461 | htab->brlt->contents + br_entry->offset); |
721956f4 | 11462 | |
f94498ff | 11463 | if (br_entry->iter == htab->stub_iteration) |
721956f4 | 11464 | { |
f94498ff | 11465 | br_entry->iter = 0; |
84f5d08e | 11466 | |
f94498ff | 11467 | if (htab->relbrlt != NULL) |
84f5d08e | 11468 | { |
f94498ff AM |
11469 | /* Create a reloc for the branch lookup table entry. */ |
11470 | Elf_Internal_Rela rela; | |
11471 | bfd_byte *rl; | |
11472 | ||
11473 | rela.r_offset = (br_entry->offset | |
11474 | + htab->brlt->output_offset | |
11475 | + htab->brlt->output_section->vma); | |
11476 | rela.r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE); | |
1aa42141 | 11477 | rela.r_addend = targ; |
f94498ff AM |
11478 | |
11479 | rl = htab->relbrlt->contents; | |
11480 | rl += (htab->relbrlt->reloc_count++ | |
11481 | * sizeof (Elf64_External_Rela)); | |
11482 | bfd_elf64_swap_reloca_out (htab->relbrlt->owner, &rela, rl); | |
11483 | } | |
11484 | else if (info->emitrelocations) | |
11485 | { | |
176a0d42 AM |
11486 | r = get_relocs (htab->brlt, 1); |
11487 | if (r == NULL) | |
11488 | return FALSE; | |
11489 | /* brlt, being SEC_LINKER_CREATED does not go through the | |
11490 | normal reloc processing. Symbols and offsets are not | |
11491 | translated from input file to output file form, so | |
11492 | set up the offset per the output file. */ | |
f94498ff AM |
11493 | r->r_offset = (br_entry->offset |
11494 | + htab->brlt->output_offset | |
11495 | + htab->brlt->output_section->vma); | |
11496 | r->r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE); | |
1aa42141 | 11497 | r->r_addend = targ; |
84f5d08e | 11498 | } |
84f5d08e | 11499 | } |
721956f4 | 11500 | |
1aa42141 | 11501 | targ = (br_entry->offset |
176a0d42 AM |
11502 | + htab->brlt->output_offset |
11503 | + htab->brlt->output_section->vma); | |
11504 | ||
1aa42141 AM |
11505 | off = (elf_gp (info->output_bfd) |
11506 | + htab->sec_info[stub_entry->group->link_sec->id].toc_off); | |
11507 | off = targ - off; | |
721956f4 | 11508 | |
ad8e1ba5 | 11509 | if (off + 0x80008000 > 0xffffffff || (off & 7) != 0) |
5d1634d7 | 11510 | { |
25f53a85 | 11511 | info->callbacks->einfo |
c1c8c1ef | 11512 | (_("%P: linkage table error against `%pT'\n"), |
721956f4 | 11513 | stub_entry->root.string); |
5d1634d7 | 11514 | bfd_set_error (bfd_error_bad_value); |
b34976b6 AM |
11515 | htab->stub_error = TRUE; |
11516 | return FALSE; | |
5d1634d7 | 11517 | } |
41bd81ab | 11518 | |
176a0d42 AM |
11519 | if (info->emitrelocations) |
11520 | { | |
6f20ed8a | 11521 | r = get_relocs (stub_entry->group->stub_sec, 1 + (PPC_HA (off) != 0)); |
176a0d42 AM |
11522 | if (r == NULL) |
11523 | return FALSE; | |
6f20ed8a | 11524 | r[0].r_offset = loc - stub_entry->group->stub_sec->contents; |
7cfbafbc AM |
11525 | if (bfd_big_endian (info->output_bfd)) |
11526 | r[0].r_offset += 2; | |
00f412ee | 11527 | if (stub_entry->stub_type == ppc_stub_plt_branch_r2off) |
176a0d42 AM |
11528 | r[0].r_offset += 4; |
11529 | r[0].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_DS); | |
1aa42141 | 11530 | r[0].r_addend = targ; |
176a0d42 AM |
11531 | if (PPC_HA (off) != 0) |
11532 | { | |
11533 | r[0].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_HA); | |
11534 | r[1].r_offset = r[0].r_offset + 4; | |
11535 | r[1].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS); | |
11536 | r[1].r_addend = r[0].r_addend; | |
11537 | } | |
11538 | } | |
11539 | ||
9e390558 | 11540 | p = loc; |
00f412ee | 11541 | if (stub_entry->stub_type != ppc_stub_plt_branch_r2off) |
ad8e1ba5 | 11542 | { |
176a0d42 | 11543 | if (PPC_HA (off) != 0) |
ac2df442 | 11544 | { |
e7d1c40c | 11545 | bfd_put_32 (htab->params->stub_bfd, |
9e390558 AM |
11546 | ADDIS_R12_R2 | PPC_HA (off), p); |
11547 | p += 4; | |
e7d1c40c | 11548 | bfd_put_32 (htab->params->stub_bfd, |
9e390558 | 11549 | LD_R12_0R12 | PPC_LO (off), p); |
ac2df442 AM |
11550 | } |
11551 | else | |
9e390558 AM |
11552 | bfd_put_32 (htab->params->stub_bfd, |
11553 | LD_R12_0R2 | PPC_LO (off), p); | |
ad8e1ba5 AM |
11554 | } |
11555 | else | |
11556 | { | |
25f53a85 | 11557 | bfd_vma r2off = get_r2off (info, stub_entry); |
aa374f67 | 11558 | |
a7c49797 | 11559 | if (r2off == (bfd_vma) -1) |
aa374f67 AM |
11560 | { |
11561 | htab->stub_error = TRUE; | |
11562 | return FALSE; | |
11563 | } | |
ad8e1ba5 | 11564 | |
9e390558 AM |
11565 | bfd_put_32 (htab->params->stub_bfd, STD_R2_0R1 + STK_TOC (htab), p); |
11566 | p += 4; | |
176a0d42 | 11567 | if (PPC_HA (off) != 0) |
ac2df442 | 11568 | { |
e7d1c40c | 11569 | bfd_put_32 (htab->params->stub_bfd, |
9e390558 AM |
11570 | ADDIS_R12_R2 | PPC_HA (off), p); |
11571 | p += 4; | |
e7d1c40c | 11572 | bfd_put_32 (htab->params->stub_bfd, |
9e390558 | 11573 | LD_R12_0R12 | PPC_LO (off), p); |
ac2df442 AM |
11574 | } |
11575 | else | |
9e390558 | 11576 | bfd_put_32 (htab->params->stub_bfd, LD_R12_0R2 | PPC_LO (off), p); |
ac2df442 AM |
11577 | |
11578 | if (PPC_HA (r2off) != 0) | |
11579 | { | |
9e390558 | 11580 | p += 4; |
e7d1c40c | 11581 | bfd_put_32 (htab->params->stub_bfd, |
9e390558 | 11582 | ADDIS_R2_R2 | PPC_HA (r2off), p); |
00f412ee AM |
11583 | } |
11584 | if (PPC_LO (r2off) != 0) | |
11585 | { | |
9e390558 | 11586 | p += 4; |
e7d1c40c | 11587 | bfd_put_32 (htab->params->stub_bfd, |
9e390558 | 11588 | ADDI_R2_R2 | PPC_LO (r2off), p); |
ac2df442 | 11589 | } |
ad8e1ba5 | 11590 | } |
9e390558 AM |
11591 | p += 4; |
11592 | bfd_put_32 (htab->params->stub_bfd, MTCTR_R12, p); | |
11593 | p += 4; | |
407aa07c AM |
11594 | bfd_put_32 (htab->params->stub_bfd, BCTR, p); |
11595 | p += 4; | |
721956f4 | 11596 | break; |
5d1634d7 | 11597 | |
05d0e962 AM |
11598 | case ppc_stub_long_branch_notoc: |
11599 | case ppc_stub_long_branch_both: | |
11600 | case ppc_stub_plt_branch_notoc: | |
11601 | case ppc_stub_plt_branch_both: | |
11602 | case ppc_stub_plt_call_notoc: | |
11603 | case ppc_stub_plt_call_both: | |
11604 | p = loc; | |
f891966f | 11605 | off = (stub_entry->stub_offset |
05d0e962 AM |
11606 | + stub_entry->group->stub_sec->output_offset |
11607 | + stub_entry->group->stub_sec->output_section->vma); | |
11608 | if (stub_entry->stub_type == ppc_stub_long_branch_both | |
11609 | || stub_entry->stub_type == ppc_stub_plt_branch_both | |
11610 | || stub_entry->stub_type == ppc_stub_plt_call_both) | |
11611 | { | |
11612 | off += 4; | |
11613 | bfd_put_32 (htab->params->stub_bfd, STD_R2_0R1 + STK_TOC (htab), p); | |
11614 | p += 4; | |
11615 | } | |
11616 | if (stub_entry->stub_type >= ppc_stub_plt_call_notoc) | |
11617 | { | |
11618 | targ = stub_entry->plt_ent->plt.offset & ~1; | |
11619 | if (targ >= (bfd_vma) -2) | |
11620 | abort (); | |
11621 | ||
11622 | plt = htab->elf.splt; | |
11623 | if (!htab->elf.dynamic_sections_created | |
11624 | || stub_entry->h == NULL | |
11625 | || stub_entry->h->elf.dynindx == -1) | |
11626 | { | |
11627 | if (stub_entry->symtype == STT_GNU_IFUNC) | |
11628 | plt = htab->elf.iplt; | |
11629 | else | |
11630 | plt = htab->pltlocal; | |
11631 | } | |
11632 | targ += plt->output_offset + plt->output_section->vma; | |
11633 | } | |
11634 | else | |
11635 | targ = (stub_entry->target_value | |
11636 | + stub_entry->target_section->output_offset | |
11637 | + stub_entry->target_section->output_section->vma); | |
04bdff6a | 11638 | odd = off & 4; |
05d0e962 | 11639 | off = targ - off; |
f891966f | 11640 | |
3d58e1fc AM |
11641 | relp = p; |
11642 | num_rel = 0; | |
e10a07b3 | 11643 | if (htab->params->power10_stubs != 0) |
04bdff6a AM |
11644 | { |
11645 | bfd_boolean load = stub_entry->stub_type >= ppc_stub_plt_call_notoc; | |
7c1f4227 | 11646 | p = build_power10_offset (htab->params->stub_bfd, p, off, odd, load); |
04bdff6a AM |
11647 | } |
11648 | else | |
11649 | { | |
11650 | /* The notoc stubs calculate their target (either a PLT entry or | |
11651 | the global entry point of a function) relative to the PC | |
11652 | returned by the "bcl" two instructions past the start of the | |
11653 | sequence emitted by build_offset. The offset is therefore 8 | |
11654 | less than calculated from the start of the sequence. */ | |
11655 | off -= 8; | |
11656 | p = build_offset (htab->params->stub_bfd, p, off, | |
11657 | stub_entry->stub_type >= ppc_stub_plt_call_notoc); | |
11658 | } | |
11659 | ||
f891966f | 11660 | if (stub_entry->stub_type <= ppc_stub_long_branch_both) |
05d0e962 | 11661 | { |
f891966f | 11662 | bfd_vma from; |
3d58e1fc | 11663 | num_rel = 1; |
f891966f AM |
11664 | from = (stub_entry->stub_offset |
11665 | + stub_entry->group->stub_sec->output_offset | |
11666 | + stub_entry->group->stub_sec->output_section->vma | |
11667 | + (p - loc)); | |
05d0e962 | 11668 | bfd_put_32 (htab->params->stub_bfd, |
f891966f | 11669 | B_DOT | ((targ - from) & 0x3fffffc), p); |
05d0e962 AM |
11670 | } |
11671 | else | |
11672 | { | |
11673 | bfd_put_32 (htab->params->stub_bfd, MTCTR_R12, p); | |
11674 | p += 4; | |
11675 | bfd_put_32 (htab->params->stub_bfd, BCTR, p); | |
11676 | } | |
11677 | p += 4; | |
df136d64 | 11678 | |
3d58e1fc AM |
11679 | if (info->emitrelocations) |
11680 | { | |
04bdff6a | 11681 | bfd_vma roff = relp - stub_entry->group->stub_sec->contents; |
e10a07b3 | 11682 | if (htab->params->power10_stubs != 0) |
7c1f4227 | 11683 | num_rel += num_relocs_for_power10_offset (off, odd); |
04bdff6a AM |
11684 | else |
11685 | { | |
11686 | num_rel += num_relocs_for_offset (off); | |
11687 | roff += 16; | |
11688 | } | |
3d58e1fc AM |
11689 | r = get_relocs (stub_entry->group->stub_sec, num_rel); |
11690 | if (r == NULL) | |
11691 | return FALSE; | |
e10a07b3 | 11692 | if (htab->params->power10_stubs != 0) |
7c1f4227 | 11693 | r = emit_relocs_for_power10_offset (info, r, roff, targ, off, odd); |
04bdff6a AM |
11694 | else |
11695 | r = emit_relocs_for_offset (info, r, roff, targ, off); | |
3d58e1fc AM |
11696 | if (stub_entry->stub_type == ppc_stub_long_branch_notoc |
11697 | || stub_entry->stub_type == ppc_stub_long_branch_both) | |
11698 | { | |
11699 | ++r; | |
11700 | roff = p - 4 - stub_entry->group->stub_sec->contents; | |
11701 | r->r_offset = roff; | |
11702 | r->r_info = ELF64_R_INFO (0, R_PPC64_REL24); | |
11703 | r->r_addend = targ; | |
11704 | if (stub_entry->h != NULL | |
11705 | && !use_global_in_relocs (htab, stub_entry, r, num_rel)) | |
11706 | return FALSE; | |
11707 | } | |
11708 | } | |
11709 | ||
e10a07b3 | 11710 | if (htab->params->power10_stubs == 0 |
04bdff6a AM |
11711 | && htab->glink_eh_frame != NULL |
11712 | && htab->glink_eh_frame->size != 0) | |
df136d64 AM |
11713 | { |
11714 | bfd_byte *base, *eh; | |
11715 | unsigned int lr_used, delta; | |
11716 | ||
11717 | base = (htab->glink_eh_frame->contents | |
11718 | + stub_entry->group->eh_base + 17); | |
11719 | eh = base + stub_entry->group->eh_size; | |
11720 | lr_used = stub_entry->stub_offset + 8; | |
11721 | if (stub_entry->stub_type == ppc_stub_long_branch_both | |
11722 | || stub_entry->stub_type == ppc_stub_plt_branch_both | |
11723 | || stub_entry->stub_type == ppc_stub_plt_call_both) | |
11724 | lr_used += 4; | |
11725 | delta = lr_used - stub_entry->group->lr_restore; | |
11726 | stub_entry->group->lr_restore = lr_used + 8; | |
11727 | eh = eh_advance (htab->elf.dynobj, eh, delta); | |
11728 | *eh++ = DW_CFA_register; | |
11729 | *eh++ = 65; | |
11730 | *eh++ = 12; | |
11731 | *eh++ = DW_CFA_advance_loc + 2; | |
11732 | *eh++ = DW_CFA_restore_extended; | |
11733 | *eh++ = 65; | |
11734 | stub_entry->group->eh_size = eh - base; | |
11735 | } | |
05d0e962 AM |
11736 | break; |
11737 | ||
721956f4 | 11738 | case ppc_stub_plt_call: |
794e51c0 | 11739 | case ppc_stub_plt_call_r2save: |
e054468f | 11740 | if (stub_entry->h != NULL |
b31867b6 AM |
11741 | && stub_entry->h->is_func_descriptor |
11742 | && stub_entry->h->oh != NULL) | |
c862ae31 | 11743 | { |
b31867b6 AM |
11744 | struct ppc_link_hash_entry *fh = ppc_follow_link (stub_entry->h->oh); |
11745 | ||
11746 | /* If the old-ABI "dot-symbol" is undefined make it weak so | |
6f20ed8a | 11747 | we don't get a link error from RELOC_FOR_GLOBAL_SYMBOL. */ |
8c5b4e52 AM |
11748 | if (fh->elf.root.type == bfd_link_hash_undefined |
11749 | && (stub_entry->h->elf.root.type == bfd_link_hash_defined | |
11750 | || stub_entry->h->elf.root.type == bfd_link_hash_defweak)) | |
b31867b6 | 11751 | fh->elf.root.type = bfd_link_hash_undefweak; |
c862ae31 AM |
11752 | } |
11753 | ||
721956f4 | 11754 | /* Now build the stub. */ |
1aa42141 AM |
11755 | targ = stub_entry->plt_ent->plt.offset & ~1; |
11756 | if (targ >= (bfd_vma) -2) | |
721956f4 AM |
11757 | abort (); |
11758 | ||
33e44f2e | 11759 | plt = htab->elf.splt; |
25f23106 AM |
11760 | if (!htab->elf.dynamic_sections_created |
11761 | || stub_entry->h == NULL | |
11762 | || stub_entry->h->elf.dynindx == -1) | |
2d7ad24e AM |
11763 | { |
11764 | if (stub_entry->symtype == STT_GNU_IFUNC) | |
11765 | plt = htab->elf.iplt; | |
11766 | else | |
11767 | plt = htab->pltlocal; | |
11768 | } | |
1aa42141 | 11769 | targ += plt->output_offset + plt->output_section->vma; |
e054468f | 11770 | |
1aa42141 AM |
11771 | off = (elf_gp (info->output_bfd) |
11772 | + htab->sec_info[stub_entry->group->link_sec->id].toc_off); | |
11773 | off = targ - off; | |
721956f4 | 11774 | |
ad8e1ba5 | 11775 | if (off + 0x80008000 > 0xffffffff || (off & 7) != 0) |
721956f4 | 11776 | { |
25f53a85 | 11777 | info->callbacks->einfo |
695344c0 | 11778 | /* xgettext:c-format */ |
c1c8c1ef | 11779 | (_("%P: linkage table error against `%pT'\n"), |
e054468f AM |
11780 | stub_entry->h != NULL |
11781 | ? stub_entry->h->elf.root.root.string | |
11782 | : "<local sym>"); | |
721956f4 | 11783 | bfd_set_error (bfd_error_bad_value); |
b34976b6 AM |
11784 | htab->stub_error = TRUE; |
11785 | return FALSE; | |
721956f4 AM |
11786 | } |
11787 | ||
176a0d42 AM |
11788 | r = NULL; |
11789 | if (info->emitrelocations) | |
11790 | { | |
6f20ed8a | 11791 | r = get_relocs (stub_entry->group->stub_sec, |
3ba720c7 AM |
11792 | ((PPC_HA (off) != 0) |
11793 | + (htab->opd_abi | |
e7d1c40c | 11794 | ? 2 + (htab->params->plt_static_chain |
3ba720c7 AM |
11795 | && PPC_HA (off + 16) == PPC_HA (off)) |
11796 | : 1))); | |
176a0d42 AM |
11797 | if (r == NULL) |
11798 | return FALSE; | |
6f20ed8a | 11799 | r[0].r_offset = loc - stub_entry->group->stub_sec->contents; |
7cfbafbc AM |
11800 | if (bfd_big_endian (info->output_bfd)) |
11801 | r[0].r_offset += 2; | |
1aa42141 | 11802 | r[0].r_addend = targ; |
176a0d42 | 11803 | } |
a7f2871e | 11804 | if (stub_entry->h != NULL |
ed7007c1 | 11805 | && is_tls_get_addr (&stub_entry->h->elf, htab) |
7c9cf415 | 11806 | && htab->params->tls_get_addr_opt) |
794e51c0 | 11807 | p = build_tls_get_addr_stub (htab, stub_entry, loc, off, r); |
a7f2871e | 11808 | else |
794e51c0 | 11809 | p = build_plt_stub (htab, stub_entry, loc, off, r); |
721956f4 AM |
11810 | break; |
11811 | ||
a4b6fadd AM |
11812 | case ppc_stub_save_res: |
11813 | return TRUE; | |
11814 | ||
721956f4 AM |
11815 | default: |
11816 | BFD_FAIL (); | |
b34976b6 | 11817 | return FALSE; |
721956f4 AM |
11818 | } |
11819 | ||
1aa42141 | 11820 | stub_entry->group->stub_sec->size = stub_entry->stub_offset + (p - loc); |
97b639ba | 11821 | |
e7d1c40c | 11822 | if (htab->params->emit_stub_syms) |
97b639ba AM |
11823 | { |
11824 | struct elf_link_hash_entry *h; | |
ee75fd95 AM |
11825 | size_t len1, len2; |
11826 | char *name; | |
11827 | const char *const stub_str[] = { "long_branch", | |
05d0e962 AM |
11828 | "long_branch", |
11829 | "long_branch", | |
3f6ff479 AM |
11830 | "long_branch", |
11831 | "plt_branch", | |
ee75fd95 | 11832 | "plt_branch", |
05d0e962 AM |
11833 | "plt_branch", |
11834 | "plt_branch", | |
11835 | "plt_call", | |
11836 | "plt_call", | |
794e51c0 | 11837 | "plt_call", |
ee75fd95 AM |
11838 | "plt_call" }; |
11839 | ||
11840 | len1 = strlen (stub_str[stub_entry->stub_type - 1]); | |
11841 | len2 = strlen (stub_entry->root.string); | |
11842 | name = bfd_malloc (len1 + len2 + 2); | |
11843 | if (name == NULL) | |
11844 | return FALSE; | |
11845 | memcpy (name, stub_entry->root.string, 9); | |
11846 | memcpy (name + 9, stub_str[stub_entry->stub_type - 1], len1); | |
11847 | memcpy (name + len1 + 9, stub_entry->root.string + 8, len2 - 8 + 1); | |
11848 | h = elf_link_hash_lookup (&htab->elf, name, TRUE, FALSE, FALSE); | |
97b639ba AM |
11849 | if (h == NULL) |
11850 | return FALSE; | |
11851 | if (h->root.type == bfd_link_hash_new) | |
11852 | { | |
11853 | h->root.type = bfd_link_hash_defined; | |
6f20ed8a | 11854 | h->root.u.def.section = stub_entry->group->stub_sec; |
97b639ba | 11855 | h->root.u.def.value = stub_entry->stub_offset; |
f5385ebf AM |
11856 | h->ref_regular = 1; |
11857 | h->def_regular = 1; | |
11858 | h->ref_regular_nonweak = 1; | |
11859 | h->forced_local = 1; | |
11860 | h->non_elf = 0; | |
2ec55de3 | 11861 | h->root.linker_def = 1; |
97b639ba AM |
11862 | } |
11863 | } | |
11864 | ||
b34976b6 | 11865 | return TRUE; |
721956f4 AM |
11866 | } |
11867 | ||
11868 | /* As above, but don't actually build the stub. Just bump offset so | |
11869 | we know stub section sizes, and select plt_branch stubs where | |
11870 | long_branch stubs won't do. */ | |
11871 | ||
b34976b6 | 11872 | static bfd_boolean |
4ce794b7 | 11873 | ppc_size_one_stub (struct bfd_hash_entry *gen_entry, void *in_arg) |
721956f4 AM |
11874 | { |
11875 | struct ppc_stub_hash_entry *stub_entry; | |
63bc6f6c | 11876 | struct bfd_link_info *info; |
721956f4 | 11877 | struct ppc_link_hash_table *htab; |
f891966f AM |
11878 | asection *plt; |
11879 | bfd_vma targ, off, r2off; | |
04bdff6a | 11880 | unsigned int size, extra, lr_used, delta, odd; |
721956f4 AM |
11881 | |
11882 | /* Massage our args to the form they really have. */ | |
11883 | stub_entry = (struct ppc_stub_hash_entry *) gen_entry; | |
63bc6f6c AM |
11884 | info = in_arg; |
11885 | ||
11886 | htab = ppc_hash_table (info); | |
4dfe6ac6 NC |
11887 | if (htab == NULL) |
11888 | return FALSE; | |
721956f4 | 11889 | |
abf874aa CL |
11890 | /* Fail if the target section could not be assigned to an output |
11891 | section. The user should fix his linker script. */ | |
11892 | if (stub_entry->target_section != NULL | |
11893 | && stub_entry->target_section->output_section == NULL | |
11894 | && info->non_contiguous_regions) | |
53215f21 CL |
11895 | info->callbacks->einfo (_("%F%P: Could not assign %pA to an output section. " |
11896 | "Retry without --enable-non-contiguous-regions.\n"), | |
11897 | stub_entry->target_section); | |
abf874aa CL |
11898 | |
11899 | /* Same for the group. */ | |
11900 | if (stub_entry->group->stub_sec != NULL | |
11901 | && stub_entry->group->stub_sec->output_section == NULL | |
11902 | && info->non_contiguous_regions) | |
53215f21 CL |
11903 | info->callbacks->einfo (_("%F%P: Could not assign group %pA target %pA to an " |
11904 | "output section. Retry without " | |
11905 | "--enable-non-contiguous-regions.\n"), | |
11906 | stub_entry->group->stub_sec, | |
11907 | stub_entry->target_section); | |
abf874aa | 11908 | |
1aa42141 AM |
11909 | /* Make a note of the offset within the stubs for this entry. */ |
11910 | stub_entry->stub_offset = stub_entry->group->stub_sec->size; | |
11911 | ||
a4b6fadd AM |
11912 | if (stub_entry->h != NULL |
11913 | && stub_entry->h->save_res | |
11914 | && stub_entry->h->elf.root.type == bfd_link_hash_defined | |
11915 | && stub_entry->h->elf.root.u.def.section == htab->sfpr) | |
11916 | { | |
11917 | /* Don't make stubs to out-of-line register save/restore | |
11918 | functions. Instead, emit copies of the functions. */ | |
11919 | stub_entry->group->needs_save_res = 1; | |
11920 | stub_entry->stub_type = ppc_stub_save_res; | |
11921 | return TRUE; | |
11922 | } | |
11923 | ||
f891966f | 11924 | switch (stub_entry->stub_type) |
721956f4 | 11925 | { |
f891966f AM |
11926 | case ppc_stub_plt_branch: |
11927 | case ppc_stub_plt_branch_r2off: | |
11928 | /* Reset the stub type from the plt branch variant in case we now | |
11929 | can reach with a shorter stub. */ | |
11930 | stub_entry->stub_type += ppc_stub_long_branch - ppc_stub_plt_branch; | |
11931 | /* Fall through. */ | |
11932 | case ppc_stub_long_branch: | |
11933 | case ppc_stub_long_branch_r2off: | |
1aa42141 AM |
11934 | targ = (stub_entry->target_value |
11935 | + stub_entry->target_section->output_offset | |
11936 | + stub_entry->target_section->output_section->vma); | |
f891966f | 11937 | targ += PPC64_LOCAL_ENTRY_OFFSET (stub_entry->other); |
1aa42141 AM |
11938 | off = (stub_entry->stub_offset |
11939 | + stub_entry->group->stub_sec->output_offset | |
11940 | + stub_entry->group->stub_sec->output_section->vma); | |
721956f4 | 11941 | |
ad8e1ba5 | 11942 | size = 4; |
f891966f | 11943 | r2off = 0; |
ad8e1ba5 AM |
11944 | if (stub_entry->stub_type == ppc_stub_long_branch_r2off) |
11945 | { | |
25f53a85 | 11946 | r2off = get_r2off (info, stub_entry); |
a7c49797 | 11947 | if (r2off == (bfd_vma) -1) |
aa374f67 AM |
11948 | { |
11949 | htab->stub_error = TRUE; | |
11950 | return FALSE; | |
11951 | } | |
a7c49797 | 11952 | size = 8; |
ac2df442 | 11953 | if (PPC_HA (r2off) != 0) |
a7c49797 AM |
11954 | size += 4; |
11955 | if (PPC_LO (r2off) != 0) | |
11956 | size += 4; | |
1aa42141 | 11957 | off += size - 4; |
ad8e1ba5 | 11958 | } |
1aa42141 | 11959 | off = targ - off; |
ad8e1ba5 | 11960 | |
f891966f AM |
11961 | /* If the branch offset is too big, use a ppc_stub_plt_branch. |
11962 | Do the same for -R objects without function descriptors. */ | |
11963 | if ((stub_entry->stub_type == ppc_stub_long_branch_r2off | |
11964 | && r2off == 0 | |
11965 | && htab->sec_info[stub_entry->target_section->id].toc_off == 0) | |
11966 | || off + (1 << 25) >= (bfd_vma) (1 << 26)) | |
721956f4 | 11967 | { |
f891966f | 11968 | struct ppc_branch_hash_entry *br_entry; |
df136d64 | 11969 | |
f891966f AM |
11970 | br_entry = ppc_branch_hash_lookup (&htab->branch_hash_table, |
11971 | stub_entry->root.string + 9, | |
11972 | TRUE, FALSE); | |
11973 | if (br_entry == NULL) | |
721956f4 | 11974 | { |
f891966f AM |
11975 | _bfd_error_handler (_("can't build branch stub `%s'"), |
11976 | stub_entry->root.string); | |
11977 | htab->stub_error = TRUE; | |
11978 | return FALSE; | |
721956f4 AM |
11979 | } |
11980 | ||
f891966f | 11981 | if (br_entry->iter != htab->stub_iteration) |
721956f4 | 11982 | { |
f891966f AM |
11983 | br_entry->iter = htab->stub_iteration; |
11984 | br_entry->offset = htab->brlt->size; | |
11985 | htab->brlt->size += 8; | |
63bc6f6c | 11986 | |
f891966f AM |
11987 | if (htab->relbrlt != NULL) |
11988 | htab->relbrlt->size += sizeof (Elf64_External_Rela); | |
11989 | else if (info->emitrelocations) | |
84f5d08e | 11990 | { |
f891966f AM |
11991 | htab->brlt->reloc_count += 1; |
11992 | htab->brlt->flags |= SEC_RELOC; | |
05d0e962 | 11993 | } |
f891966f | 11994 | } |
ac2df442 | 11995 | |
f891966f AM |
11996 | targ = (br_entry->offset |
11997 | + htab->brlt->output_offset | |
11998 | + htab->brlt->output_section->vma); | |
11999 | off = (elf_gp (info->output_bfd) | |
12000 | + htab->sec_info[stub_entry->group->link_sec->id].toc_off); | |
12001 | off = targ - off; | |
176a0d42 | 12002 | |
f891966f AM |
12003 | if (info->emitrelocations) |
12004 | { | |
12005 | stub_entry->group->stub_sec->reloc_count | |
12006 | += 1 + (PPC_HA (off) != 0); | |
12007 | stub_entry->group->stub_sec->flags |= SEC_RELOC; | |
12008 | } | |
05d0e962 | 12009 | |
f891966f AM |
12010 | stub_entry->stub_type += ppc_stub_plt_branch - ppc_stub_long_branch; |
12011 | if (stub_entry->stub_type != ppc_stub_plt_branch_r2off) | |
12012 | { | |
12013 | size = 12; | |
12014 | if (PPC_HA (off) != 0) | |
12015 | size = 16; | |
ac2df442 | 12016 | } |
f891966f | 12017 | else |
ac2df442 | 12018 | { |
f891966f AM |
12019 | size = 16; |
12020 | if (PPC_HA (off) != 0) | |
12021 | size += 4; | |
12022 | ||
12023 | if (PPC_HA (r2off) != 0) | |
12024 | size += 4; | |
12025 | if (PPC_LO (r2off) != 0) | |
12026 | size += 4; | |
ac2df442 | 12027 | } |
721956f4 | 12028 | } |
f891966f AM |
12029 | else if (info->emitrelocations) |
12030 | { | |
12031 | stub_entry->group->stub_sec->reloc_count += 1; | |
12032 | stub_entry->group->stub_sec->flags |= SEC_RELOC; | |
12033 | } | |
12034 | break; | |
12035 | ||
12036 | case ppc_stub_plt_branch_notoc: | |
12037 | case ppc_stub_plt_branch_both: | |
12038 | stub_entry->stub_type += ppc_stub_long_branch - ppc_stub_plt_branch; | |
12039 | /* Fall through. */ | |
12040 | case ppc_stub_long_branch_notoc: | |
12041 | case ppc_stub_long_branch_both: | |
12042 | off = (stub_entry->stub_offset | |
12043 | + stub_entry->group->stub_sec->output_offset | |
12044 | + stub_entry->group->stub_sec->output_section->vma); | |
12045 | size = 0; | |
12046 | if (stub_entry->stub_type == ppc_stub_long_branch_both) | |
12047 | size = 4; | |
12048 | off += size; | |
12049 | targ = (stub_entry->target_value | |
12050 | + stub_entry->target_section->output_offset | |
12051 | + stub_entry->target_section->output_section->vma); | |
04bdff6a | 12052 | odd = off & 4; |
f891966f AM |
12053 | off = targ - off; |
12054 | ||
3d58e1fc AM |
12055 | if (info->emitrelocations) |
12056 | { | |
04bdff6a | 12057 | unsigned int num_rel; |
e10a07b3 | 12058 | if (htab->params->power10_stubs != 0) |
7c1f4227 | 12059 | num_rel = num_relocs_for_power10_offset (off, odd); |
04bdff6a AM |
12060 | else |
12061 | num_rel = num_relocs_for_offset (off - 8); | |
12062 | stub_entry->group->stub_sec->reloc_count += num_rel; | |
3d58e1fc AM |
12063 | stub_entry->group->stub_sec->flags |= SEC_RELOC; |
12064 | } | |
12065 | ||
e10a07b3 | 12066 | if (htab->params->power10_stubs != 0) |
7c1f4227 | 12067 | extra = size_power10_offset (off, odd); |
04bdff6a AM |
12068 | else |
12069 | extra = size_offset (off - 8); | |
f891966f AM |
12070 | /* Include branch insn plus those in the offset sequence. */ |
12071 | size += 4 + extra; | |
12072 | /* The branch insn is at the end, or "extra" bytes along. So | |
12073 | its offset will be "extra" bytes less that that already | |
12074 | calculated. */ | |
12075 | off -= extra; | |
12076 | ||
e10a07b3 | 12077 | if (htab->params->power10_stubs == 0) |
04bdff6a AM |
12078 | { |
12079 | /* After the bcl, lr has been modified so we need to emit | |
12080 | .eh_frame info saying the return address is in r12. */ | |
12081 | lr_used = stub_entry->stub_offset + 8; | |
12082 | if (stub_entry->stub_type == ppc_stub_long_branch_both) | |
12083 | lr_used += 4; | |
12084 | /* The eh_frame info will consist of a DW_CFA_advance_loc or | |
12085 | variant, DW_CFA_register, 65, 12, DW_CFA_advance_loc+2, | |
12086 | DW_CFA_restore_extended 65. */ | |
12087 | delta = lr_used - stub_entry->group->lr_restore; | |
12088 | stub_entry->group->eh_size += eh_advance_size (delta) + 6; | |
12089 | stub_entry->group->lr_restore = lr_used + 8; | |
12090 | } | |
f891966f AM |
12091 | |
12092 | /* If the branch can't reach, use a plt_branch. */ | |
12093 | if (off + (1 << 25) >= (bfd_vma) (1 << 26)) | |
12094 | { | |
12095 | stub_entry->stub_type += (ppc_stub_plt_branch_notoc | |
12096 | - ppc_stub_long_branch_notoc); | |
12097 | size += 4; | |
12098 | } | |
3d58e1fc AM |
12099 | else if (info->emitrelocations) |
12100 | stub_entry->group->stub_sec->reloc_count +=1; | |
f891966f AM |
12101 | break; |
12102 | ||
12103 | case ppc_stub_plt_call_notoc: | |
12104 | case ppc_stub_plt_call_both: | |
12105 | off = (stub_entry->stub_offset | |
12106 | + stub_entry->group->stub_sec->output_offset | |
12107 | + stub_entry->group->stub_sec->output_section->vma); | |
12108 | if (stub_entry->stub_type == ppc_stub_plt_call_both) | |
12109 | off += 4; | |
12110 | targ = stub_entry->plt_ent->plt.offset & ~1; | |
12111 | if (targ >= (bfd_vma) -2) | |
12112 | abort (); | |
12113 | ||
12114 | plt = htab->elf.splt; | |
12115 | if (!htab->elf.dynamic_sections_created | |
12116 | || stub_entry->h == NULL | |
12117 | || stub_entry->h->elf.dynindx == -1) | |
12118 | { | |
12119 | if (stub_entry->symtype == STT_GNU_IFUNC) | |
12120 | plt = htab->elf.iplt; | |
12121 | else | |
12122 | plt = htab->pltlocal; | |
12123 | } | |
12124 | targ += plt->output_offset + plt->output_section->vma; | |
04bdff6a | 12125 | odd = off & 4; |
f891966f AM |
12126 | off = targ - off; |
12127 | ||
12128 | if (htab->params->plt_stub_align != 0) | |
12129 | { | |
12130 | unsigned pad = plt_stub_pad (htab, stub_entry, off); | |
12131 | ||
12132 | stub_entry->group->stub_sec->size += pad; | |
12133 | stub_entry->stub_offset = stub_entry->group->stub_sec->size; | |
12134 | off -= pad; | |
12135 | } | |
12136 | ||
3d58e1fc AM |
12137 | if (info->emitrelocations) |
12138 | { | |
04bdff6a | 12139 | unsigned int num_rel; |
e10a07b3 | 12140 | if (htab->params->power10_stubs != 0) |
7c1f4227 | 12141 | num_rel = num_relocs_for_power10_offset (off, odd); |
04bdff6a AM |
12142 | else |
12143 | num_rel = num_relocs_for_offset (off - 8); | |
12144 | stub_entry->group->stub_sec->reloc_count += num_rel; | |
3d58e1fc AM |
12145 | stub_entry->group->stub_sec->flags |= SEC_RELOC; |
12146 | } | |
12147 | ||
f891966f AM |
12148 | size = plt_stub_size (htab, stub_entry, off); |
12149 | ||
e10a07b3 | 12150 | if (htab->params->power10_stubs == 0) |
04bdff6a AM |
12151 | { |
12152 | /* After the bcl, lr has been modified so we need to emit | |
12153 | .eh_frame info saying the return address is in r12. */ | |
12154 | lr_used = stub_entry->stub_offset + 8; | |
12155 | if (stub_entry->stub_type == ppc_stub_plt_call_both) | |
12156 | lr_used += 4; | |
12157 | /* The eh_frame info will consist of a DW_CFA_advance_loc or | |
12158 | variant, DW_CFA_register, 65, 12, DW_CFA_advance_loc+2, | |
12159 | DW_CFA_restore_extended 65. */ | |
12160 | delta = lr_used - stub_entry->group->lr_restore; | |
12161 | stub_entry->group->eh_size += eh_advance_size (delta) + 6; | |
12162 | stub_entry->group->lr_restore = lr_used + 8; | |
12163 | } | |
f891966f AM |
12164 | break; |
12165 | ||
12166 | case ppc_stub_plt_call: | |
12167 | case ppc_stub_plt_call_r2save: | |
12168 | targ = stub_entry->plt_ent->plt.offset & ~(bfd_vma) 1; | |
12169 | if (targ >= (bfd_vma) -2) | |
12170 | abort (); | |
12171 | plt = htab->elf.splt; | |
12172 | if (!htab->elf.dynamic_sections_created | |
12173 | || stub_entry->h == NULL | |
12174 | || stub_entry->h->elf.dynindx == -1) | |
12175 | { | |
12176 | if (stub_entry->symtype == STT_GNU_IFUNC) | |
12177 | plt = htab->elf.iplt; | |
12178 | else | |
12179 | plt = htab->pltlocal; | |
12180 | } | |
12181 | targ += plt->output_offset + plt->output_section->vma; | |
12182 | ||
12183 | off = (elf_gp (info->output_bfd) | |
12184 | + htab->sec_info[stub_entry->group->link_sec->id].toc_off); | |
12185 | off = targ - off; | |
12186 | ||
12187 | if (htab->params->plt_stub_align != 0) | |
12188 | { | |
12189 | unsigned pad = plt_stub_pad (htab, stub_entry, off); | |
12190 | ||
12191 | stub_entry->group->stub_sec->size += pad; | |
12192 | stub_entry->stub_offset = stub_entry->group->stub_sec->size; | |
12193 | } | |
12194 | ||
12195 | if (info->emitrelocations) | |
12196 | { | |
12197 | stub_entry->group->stub_sec->reloc_count | |
12198 | += ((PPC_HA (off) != 0) | |
12199 | + (htab->opd_abi | |
12200 | ? 2 + (htab->params->plt_static_chain | |
12201 | && PPC_HA (off + 16) == PPC_HA (off)) | |
12202 | : 1)); | |
12203 | stub_entry->group->stub_sec->flags |= SEC_RELOC; | |
12204 | } | |
12205 | ||
12206 | size = plt_stub_size (htab, stub_entry, off); | |
12207 | ||
12208 | if (stub_entry->h != NULL | |
ed7007c1 | 12209 | && is_tls_get_addr (&stub_entry->h->elf, htab) |
f891966f AM |
12210 | && htab->params->tls_get_addr_opt |
12211 | && stub_entry->stub_type == ppc_stub_plt_call_r2save) | |
12212 | { | |
9e7028aa AM |
12213 | if (htab->params->no_tls_get_addr_regsave) |
12214 | { | |
12215 | lr_used = stub_entry->stub_offset + size - 20; | |
12216 | /* The eh_frame info will consist of a DW_CFA_advance_loc | |
12217 | or variant, DW_CFA_offset_externed_sf, 65, -stackoff, | |
12218 | DW_CFA_advance_loc+4, DW_CFA_restore_extended, 65. */ | |
12219 | delta = lr_used - stub_entry->group->lr_restore; | |
12220 | stub_entry->group->eh_size += eh_advance_size (delta) + 6; | |
12221 | } | |
12222 | else | |
12223 | { | |
12224 | /* Adjustments to r1 need to be described. */ | |
12225 | unsigned int cfa_updt = stub_entry->stub_offset + 18 * 4; | |
12226 | delta = cfa_updt - stub_entry->group->lr_restore; | |
12227 | stub_entry->group->eh_size += eh_advance_size (delta); | |
12228 | stub_entry->group->eh_size += htab->opd_abi ? 36 : 35; | |
12229 | } | |
f891966f AM |
12230 | stub_entry->group->lr_restore = size - 4; |
12231 | } | |
12232 | break; | |
12233 | ||
12234 | default: | |
12235 | BFD_FAIL (); | |
12236 | return FALSE; | |
721956f4 AM |
12237 | } |
12238 | ||
6f20ed8a | 12239 | stub_entry->group->stub_sec->size += size; |
b34976b6 | 12240 | return TRUE; |
721956f4 AM |
12241 | } |
12242 | ||
12243 | /* Set up various things so that we can make a list of input sections | |
12244 | for each output section included in the link. Returns -1 on error, | |
cedb70c5 | 12245 | 0 when no stubs will be needed, and 1 on success. */ |
721956f4 AM |
12246 | |
12247 | int | |
e7d1c40c | 12248 | ppc64_elf_setup_section_lists (struct bfd_link_info *info) |
721956f4 | 12249 | { |
6f20ed8a | 12250 | unsigned int id; |
986f0783 | 12251 | size_t amt; |
721956f4 AM |
12252 | struct ppc_link_hash_table *htab = ppc_hash_table (info); |
12253 | ||
4dfe6ac6 NC |
12254 | if (htab == NULL) |
12255 | return -1; | |
4c52953f | 12256 | |
7cf7fcc8 | 12257 | htab->sec_info_arr_size = _bfd_section_id; |
6f20ed8a AM |
12258 | amt = sizeof (*htab->sec_info) * (htab->sec_info_arr_size); |
12259 | htab->sec_info = bfd_zmalloc (amt); | |
12260 | if (htab->sec_info == NULL) | |
721956f4 AM |
12261 | return -1; |
12262 | ||
3d6f9012 AM |
12263 | /* Set toc_off for com, und, abs and ind sections. */ |
12264 | for (id = 0; id < 3; id++) | |
6f20ed8a | 12265 | htab->sec_info[id].toc_off = TOC_BASE_OFF; |
734b6cf9 | 12266 | |
721956f4 AM |
12267 | return 1; |
12268 | } | |
12269 | ||
927be08e AM |
12270 | /* Set up for first pass at multitoc partitioning. */ |
12271 | ||
12272 | void | |
12273 | ppc64_elf_start_multitoc_partition (struct bfd_link_info *info) | |
12274 | { | |
12275 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
12276 | ||
1c865ab2 | 12277 | htab->toc_curr = ppc64_elf_set_toc (info, info->output_bfd); |
927be08e AM |
12278 | htab->toc_bfd = NULL; |
12279 | htab->toc_first_sec = NULL; | |
12280 | } | |
12281 | ||
e717da7e AM |
12282 | /* The linker repeatedly calls this function for each TOC input section |
12283 | and linker generated GOT section. Group input bfds such that the toc | |
927be08e | 12284 | within a group is less than 64k in size. */ |
ad8e1ba5 | 12285 | |
927be08e | 12286 | bfd_boolean |
4ce794b7 | 12287 | ppc64_elf_next_toc_section (struct bfd_link_info *info, asection *isec) |
ad8e1ba5 AM |
12288 | { |
12289 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
d77c8a4b | 12290 | bfd_vma addr, off, limit; |
ad8e1ba5 | 12291 | |
4dfe6ac6 NC |
12292 | if (htab == NULL) |
12293 | return FALSE; | |
12294 | ||
927be08e | 12295 | if (!htab->second_toc_pass) |
4c52953f | 12296 | { |
927be08e | 12297 | /* Keep track of the first .toc or .got section for this input bfd. */ |
a4fd3de5 AM |
12298 | bfd_boolean new_bfd = htab->toc_bfd != isec->owner; |
12299 | ||
12300 | if (new_bfd) | |
bf102f86 AM |
12301 | { |
12302 | htab->toc_bfd = isec->owner; | |
12303 | htab->toc_first_sec = isec; | |
12304 | } | |
927be08e | 12305 | |
bf102f86 AM |
12306 | addr = isec->output_offset + isec->output_section->vma; |
12307 | off = addr - htab->toc_curr; | |
d77c8a4b AM |
12308 | limit = 0x80008000; |
12309 | if (ppc64_elf_tdata (isec->owner)->has_small_toc_reloc) | |
12310 | limit = 0x10000; | |
12311 | if (off + isec->size > limit) | |
bf102f86 AM |
12312 | { |
12313 | addr = (htab->toc_first_sec->output_offset | |
12314 | + htab->toc_first_sec->output_section->vma); | |
12315 | htab->toc_curr = addr; | |
a27e685f | 12316 | htab->toc_curr &= -TOC_BASE_ALIGN; |
bf102f86 | 12317 | } |
99877b66 | 12318 | |
927be08e AM |
12319 | /* toc_curr is the base address of this toc group. Set elf_gp |
12320 | for the input section to be the offset relative to the | |
12321 | output toc base plus 0x8000. Making the input elf_gp an | |
12322 | offset allows us to move the toc as a whole without | |
12323 | recalculating input elf_gp. */ | |
06bcf541 | 12324 | off = htab->toc_curr - elf_gp (info->output_bfd); |
927be08e AM |
12325 | off += TOC_BASE_OFF; |
12326 | ||
12327 | /* Die if someone uses a linker script that doesn't keep input | |
12328 | file .toc and .got together. */ | |
a4fd3de5 AM |
12329 | if (new_bfd |
12330 | && elf_gp (isec->owner) != 0 | |
927be08e AM |
12331 | && elf_gp (isec->owner) != off) |
12332 | return FALSE; | |
12333 | ||
12334 | elf_gp (isec->owner) = off; | |
12335 | return TRUE; | |
4c52953f | 12336 | } |
927be08e AM |
12337 | |
12338 | /* During the second pass toc_first_sec points to the start of | |
12339 | a toc group, and toc_curr is used to track the old elf_gp. | |
12340 | We use toc_bfd to ensure we only look at each bfd once. */ | |
12341 | if (htab->toc_bfd == isec->owner) | |
12342 | return TRUE; | |
12343 | htab->toc_bfd = isec->owner; | |
12344 | ||
12345 | if (htab->toc_first_sec == NULL | |
12346 | || htab->toc_curr != elf_gp (isec->owner)) | |
12347 | { | |
12348 | htab->toc_curr = elf_gp (isec->owner); | |
12349 | htab->toc_first_sec = isec; | |
12350 | } | |
12351 | addr = (htab->toc_first_sec->output_offset | |
12352 | + htab->toc_first_sec->output_section->vma); | |
06bcf541 | 12353 | off = addr - elf_gp (info->output_bfd) + TOC_BASE_OFF; |
927be08e AM |
12354 | elf_gp (isec->owner) = off; |
12355 | ||
12356 | return TRUE; | |
ad8e1ba5 AM |
12357 | } |
12358 | ||
927be08e AM |
12359 | /* Called via elf_link_hash_traverse to merge GOT entries for global |
12360 | symbol H. */ | |
12361 | ||
12362 | static bfd_boolean | |
12363 | merge_global_got (struct elf_link_hash_entry *h, void *inf ATTRIBUTE_UNUSED) | |
12364 | { | |
12365 | if (h->root.type == bfd_link_hash_indirect) | |
12366 | return TRUE; | |
12367 | ||
927be08e AM |
12368 | merge_got_entries (&h->got.glist); |
12369 | ||
12370 | return TRUE; | |
12371 | } | |
12372 | ||
12373 | /* Called via elf_link_hash_traverse to allocate GOT entries for global | |
12374 | symbol H. */ | |
12375 | ||
12376 | static bfd_boolean | |
12377 | reallocate_got (struct elf_link_hash_entry *h, void *inf) | |
12378 | { | |
12379 | struct got_entry *gent; | |
12380 | ||
12381 | if (h->root.type == bfd_link_hash_indirect) | |
12382 | return TRUE; | |
12383 | ||
927be08e AM |
12384 | for (gent = h->got.glist; gent != NULL; gent = gent->next) |
12385 | if (!gent->is_indirect) | |
12386 | allocate_got (h, (struct bfd_link_info *) inf, gent); | |
12387 | return TRUE; | |
12388 | } | |
12389 | ||
12390 | /* Called on the first multitoc pass after the last call to | |
12391 | ppc64_elf_next_toc_section. This function removes duplicate GOT | |
12392 | entries. */ | |
12393 | ||
12394 | bfd_boolean | |
12395 | ppc64_elf_layout_multitoc (struct bfd_link_info *info) | |
ad8e1ba5 AM |
12396 | { |
12397 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
927be08e AM |
12398 | struct bfd *ibfd, *ibfd2; |
12399 | bfd_boolean done_something; | |
12400 | ||
12401 | htab->multi_toc_needed = htab->toc_curr != elf_gp (info->output_bfd); | |
ad8e1ba5 | 12402 | |
7865406b AM |
12403 | if (!htab->do_multi_toc) |
12404 | return FALSE; | |
12405 | ||
d0fae19d | 12406 | /* Merge global sym got entries within a toc group. */ |
927be08e AM |
12407 | elf_link_hash_traverse (&htab->elf, merge_global_got, info); |
12408 | ||
12409 | /* And tlsld_got. */ | |
c72f2fb2 | 12410 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next) |
927be08e AM |
12411 | { |
12412 | struct got_entry *ent, *ent2; | |
12413 | ||
12414 | if (!is_ppc64_elf (ibfd)) | |
12415 | continue; | |
12416 | ||
12417 | ent = ppc64_tlsld_got (ibfd); | |
12418 | if (!ent->is_indirect | |
12419 | && ent->got.offset != (bfd_vma) -1) | |
12420 | { | |
c72f2fb2 | 12421 | for (ibfd2 = ibfd->link.next; ibfd2 != NULL; ibfd2 = ibfd2->link.next) |
927be08e AM |
12422 | { |
12423 | if (!is_ppc64_elf (ibfd2)) | |
12424 | continue; | |
12425 | ||
12426 | ent2 = ppc64_tlsld_got (ibfd2); | |
12427 | if (!ent2->is_indirect | |
12428 | && ent2->got.offset != (bfd_vma) -1 | |
12429 | && elf_gp (ibfd2) == elf_gp (ibfd)) | |
12430 | { | |
12431 | ent2->is_indirect = TRUE; | |
12432 | ent2->got.ent = ent; | |
12433 | } | |
12434 | } | |
12435 | } | |
12436 | } | |
12437 | ||
12438 | /* Zap sizes of got sections. */ | |
33e44f2e AM |
12439 | htab->elf.irelplt->rawsize = htab->elf.irelplt->size; |
12440 | htab->elf.irelplt->size -= htab->got_reli_size; | |
927be08e AM |
12441 | htab->got_reli_size = 0; |
12442 | ||
c72f2fb2 | 12443 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next) |
927be08e AM |
12444 | { |
12445 | asection *got, *relgot; | |
12446 | ||
12447 | if (!is_ppc64_elf (ibfd)) | |
12448 | continue; | |
12449 | ||
12450 | got = ppc64_elf_tdata (ibfd)->got; | |
12451 | if (got != NULL) | |
12452 | { | |
12453 | got->rawsize = got->size; | |
12454 | got->size = 0; | |
12455 | relgot = ppc64_elf_tdata (ibfd)->relgot; | |
12456 | relgot->rawsize = relgot->size; | |
12457 | relgot->size = 0; | |
12458 | } | |
12459 | } | |
12460 | ||
12461 | /* Now reallocate the got, local syms first. We don't need to | |
12462 | allocate section contents again since we never increase size. */ | |
c72f2fb2 | 12463 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next) |
927be08e AM |
12464 | { |
12465 | struct got_entry **lgot_ents; | |
12466 | struct got_entry **end_lgot_ents; | |
12467 | struct plt_entry **local_plt; | |
12468 | struct plt_entry **end_local_plt; | |
f961d9dd | 12469 | unsigned char *lgot_masks; |
927be08e AM |
12470 | bfd_size_type locsymcount; |
12471 | Elf_Internal_Shdr *symtab_hdr; | |
19e08130 | 12472 | asection *s; |
927be08e AM |
12473 | |
12474 | if (!is_ppc64_elf (ibfd)) | |
12475 | continue; | |
12476 | ||
12477 | lgot_ents = elf_local_got_ents (ibfd); | |
12478 | if (!lgot_ents) | |
12479 | continue; | |
12480 | ||
12481 | symtab_hdr = &elf_symtab_hdr (ibfd); | |
12482 | locsymcount = symtab_hdr->sh_info; | |
12483 | end_lgot_ents = lgot_ents + locsymcount; | |
12484 | local_plt = (struct plt_entry **) end_lgot_ents; | |
12485 | end_local_plt = local_plt + locsymcount; | |
f961d9dd | 12486 | lgot_masks = (unsigned char *) end_local_plt; |
927be08e | 12487 | s = ppc64_elf_tdata (ibfd)->got; |
927be08e AM |
12488 | for (; lgot_ents < end_lgot_ents; ++lgot_ents, ++lgot_masks) |
12489 | { | |
12490 | struct got_entry *ent; | |
12491 | ||
12492 | for (ent = *lgot_ents; ent != NULL; ent = ent->next) | |
d0fae19d | 12493 | { |
19e08130 AM |
12494 | unsigned int ent_size = 8; |
12495 | unsigned int rel_size = sizeof (Elf64_External_Rela); | |
12496 | ||
d0fae19d AM |
12497 | ent->got.offset = s->size; |
12498 | if ((ent->tls_type & *lgot_masks & TLS_GD) != 0) | |
d0fae19d | 12499 | { |
19e08130 AM |
12500 | ent_size *= 2; |
12501 | rel_size *= 2; | |
12502 | } | |
12503 | s->size += ent_size; | |
37da22e5 | 12504 | if ((*lgot_masks & (TLS_TLS | PLT_IFUNC)) == PLT_IFUNC) |
19e08130 | 12505 | { |
33e44f2e | 12506 | htab->elf.irelplt->size += rel_size; |
19e08130 AM |
12507 | htab->got_reli_size += rel_size; |
12508 | } | |
6a3858a6 | 12509 | else if (bfd_link_pic (info) |
f749f26e | 12510 | && !(ent->tls_type != 0 |
6a3858a6 | 12511 | && bfd_link_executable (info))) |
19e08130 AM |
12512 | { |
12513 | asection *srel = ppc64_elf_tdata (ibfd)->relgot; | |
12514 | srel->size += rel_size; | |
d0fae19d AM |
12515 | } |
12516 | } | |
927be08e AM |
12517 | } |
12518 | } | |
12519 | ||
12520 | elf_link_hash_traverse (&htab->elf, reallocate_got, info); | |
12521 | ||
c72f2fb2 | 12522 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next) |
927be08e AM |
12523 | { |
12524 | struct got_entry *ent; | |
12525 | ||
12526 | if (!is_ppc64_elf (ibfd)) | |
12527 | continue; | |
12528 | ||
12529 | ent = ppc64_tlsld_got (ibfd); | |
12530 | if (!ent->is_indirect | |
12531 | && ent->got.offset != (bfd_vma) -1) | |
12532 | { | |
12533 | asection *s = ppc64_elf_tdata (ibfd)->got; | |
12534 | ent->got.offset = s->size; | |
12535 | s->size += 16; | |
f749f26e | 12536 | if (bfd_link_dll (info)) |
927be08e AM |
12537 | { |
12538 | asection *srel = ppc64_elf_tdata (ibfd)->relgot; | |
12539 | srel->size += sizeof (Elf64_External_Rela); | |
12540 | } | |
12541 | } | |
12542 | } | |
12543 | ||
33e44f2e | 12544 | done_something = htab->elf.irelplt->rawsize != htab->elf.irelplt->size; |
927be08e | 12545 | if (!done_something) |
c72f2fb2 | 12546 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next) |
927be08e AM |
12547 | { |
12548 | asection *got; | |
12549 | ||
12550 | if (!is_ppc64_elf (ibfd)) | |
12551 | continue; | |
12552 | ||
12553 | got = ppc64_elf_tdata (ibfd)->got; | |
12554 | if (got != NULL) | |
12555 | { | |
12556 | done_something = got->rawsize != got->size; | |
12557 | if (done_something) | |
12558 | break; | |
12559 | } | |
12560 | } | |
12561 | ||
12562 | if (done_something) | |
e7d1c40c | 12563 | (*htab->params->layout_sections_again) (); |
927be08e AM |
12564 | |
12565 | /* Set up for second pass over toc sections to recalculate elf_gp | |
12566 | on input sections. */ | |
12567 | htab->toc_bfd = NULL; | |
12568 | htab->toc_first_sec = NULL; | |
12569 | htab->second_toc_pass = TRUE; | |
12570 | return done_something; | |
12571 | } | |
12572 | ||
12573 | /* Called after second pass of multitoc partitioning. */ | |
12574 | ||
12575 | void | |
12576 | ppc64_elf_finish_multitoc_partition (struct bfd_link_info *info) | |
12577 | { | |
12578 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
12579 | ||
12580 | /* After the second pass, toc_curr tracks the TOC offset used | |
12581 | for code sections below in ppc64_elf_next_input_section. */ | |
3d6f9012 | 12582 | htab->toc_curr = TOC_BASE_OFF; |
ad8e1ba5 AM |
12583 | } |
12584 | ||
9b5ecbd0 AM |
12585 | /* No toc references were found in ISEC. If the code in ISEC makes no |
12586 | calls, then there's no need to use toc adjusting stubs when branching | |
12587 | into ISEC. Actually, indirect calls from ISEC are OK as they will | |
4c52953f AM |
12588 | load r2. Returns -1 on error, 0 for no stub needed, 1 for stub |
12589 | needed, and 2 if a cyclical call-graph was found but no other reason | |
12590 | for a stub was detected. If called from the top level, a return of | |
12591 | 2 means the same as a return of 0. */ | |
9b5ecbd0 AM |
12592 | |
12593 | static int | |
4ce794b7 | 12594 | toc_adjusting_stub_needed (struct bfd_link_info *info, asection *isec) |
9b5ecbd0 | 12595 | { |
9b5ecbd0 | 12596 | int ret; |
70cc837d AM |
12597 | |
12598 | /* Mark this section as checked. */ | |
12599 | isec->call_check_done = 1; | |
9b5ecbd0 | 12600 | |
772119ce AM |
12601 | /* We know none of our code bearing sections will need toc stubs. */ |
12602 | if ((isec->flags & SEC_LINKER_CREATED) != 0) | |
12603 | return 0; | |
12604 | ||
eea6121a | 12605 | if (isec->size == 0) |
082c50f8 AM |
12606 | return 0; |
12607 | ||
4c52953f AM |
12608 | if (isec->output_section == NULL) |
12609 | return 0; | |
12610 | ||
4c52953f | 12611 | ret = 0; |
70cc837d | 12612 | if (isec->reloc_count != 0) |
9b5ecbd0 | 12613 | { |
70cc837d AM |
12614 | Elf_Internal_Rela *relstart, *rel; |
12615 | Elf_Internal_Sym *local_syms; | |
12616 | struct ppc_link_hash_table *htab; | |
2917689a | 12617 | |
70cc837d AM |
12618 | relstart = _bfd_elf_link_read_relocs (isec->owner, isec, NULL, NULL, |
12619 | info->keep_memory); | |
12620 | if (relstart == NULL) | |
12621 | return -1; | |
90aecf7a | 12622 | |
70cc837d AM |
12623 | /* Look for branches to outside of this section. */ |
12624 | local_syms = NULL; | |
12625 | htab = ppc_hash_table (info); | |
12626 | if (htab == NULL) | |
12627 | return -1; | |
4c52953f | 12628 | |
70cc837d | 12629 | for (rel = relstart; rel < relstart + isec->reloc_count; ++rel) |
4c52953f | 12630 | { |
70cc837d AM |
12631 | enum elf_ppc64_reloc_type r_type; |
12632 | unsigned long r_symndx; | |
12633 | struct elf_link_hash_entry *h; | |
12634 | struct ppc_link_hash_entry *eh; | |
12635 | Elf_Internal_Sym *sym; | |
12636 | asection *sym_sec; | |
12637 | struct _opd_sec_data *opd; | |
12638 | bfd_vma sym_value; | |
12639 | bfd_vma dest; | |
12640 | ||
12641 | r_type = ELF64_R_TYPE (rel->r_info); | |
12642 | if (r_type != R_PPC64_REL24 | |
05d0e962 | 12643 | && r_type != R_PPC64_REL24_NOTOC |
70cc837d AM |
12644 | && r_type != R_PPC64_REL14 |
12645 | && r_type != R_PPC64_REL14_BRTAKEN | |
23cedd1d | 12646 | && r_type != R_PPC64_REL14_BRNTAKEN |
5663e321 AM |
12647 | && r_type != R_PPC64_PLTCALL |
12648 | && r_type != R_PPC64_PLTCALL_NOTOC) | |
70cc837d | 12649 | continue; |
4c52953f | 12650 | |
70cc837d AM |
12651 | r_symndx = ELF64_R_SYM (rel->r_info); |
12652 | if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, r_symndx, | |
12653 | isec->owner)) | |
4c52953f | 12654 | { |
70cc837d AM |
12655 | ret = -1; |
12656 | break; | |
12657 | } | |
4c52953f | 12658 | |
70cc837d AM |
12659 | /* Calls to dynamic lib functions go through a plt call stub |
12660 | that uses r2. */ | |
ed7007c1 | 12661 | eh = ppc_elf_hash_entry (h); |
70cc837d AM |
12662 | if (eh != NULL |
12663 | && (eh->elf.plt.plist != NULL | |
12664 | || (eh->oh != NULL | |
12665 | && ppc_follow_link (eh->oh)->elf.plt.plist != NULL))) | |
12666 | { | |
12667 | ret = 1; | |
12668 | break; | |
4c52953f AM |
12669 | } |
12670 | ||
70cc837d AM |
12671 | if (sym_sec == NULL) |
12672 | /* Ignore other undefined symbols. */ | |
4c52953f | 12673 | continue; |
4c52953f | 12674 | |
70cc837d AM |
12675 | /* Assume branches to other sections not included in the |
12676 | link need stubs too, to cover -R and absolute syms. */ | |
12677 | if (sym_sec->output_section == NULL) | |
12678 | { | |
12679 | ret = 1; | |
12680 | break; | |
12681 | } | |
4c52953f | 12682 | |
70cc837d AM |
12683 | if (h == NULL) |
12684 | sym_value = sym->st_value; | |
12685 | else | |
12686 | { | |
12687 | if (h->root.type != bfd_link_hash_defined | |
12688 | && h->root.type != bfd_link_hash_defweak) | |
12689 | abort (); | |
12690 | sym_value = h->root.u.def.value; | |
12691 | } | |
12692 | sym_value += rel->r_addend; | |
4c52953f | 12693 | |
70cc837d AM |
12694 | /* If this branch reloc uses an opd sym, find the code section. */ |
12695 | opd = get_opd_info (sym_sec); | |
12696 | if (opd != NULL) | |
12697 | { | |
12698 | if (h == NULL && opd->adjust != NULL) | |
12699 | { | |
12700 | long adjust; | |
4c52953f | 12701 | |
92a9c616 | 12702 | adjust = opd->adjust[OPD_NDX (sym_value)]; |
70cc837d AM |
12703 | if (adjust == -1) |
12704 | /* Assume deleted functions won't ever be called. */ | |
12705 | continue; | |
12706 | sym_value += adjust; | |
12707 | } | |
4c52953f | 12708 | |
aef36ac1 AM |
12709 | dest = opd_entry_value (sym_sec, sym_value, |
12710 | &sym_sec, NULL, FALSE); | |
70cc837d AM |
12711 | if (dest == (bfd_vma) -1) |
12712 | continue; | |
12713 | } | |
12714 | else | |
12715 | dest = (sym_value | |
12716 | + sym_sec->output_offset | |
12717 | + sym_sec->output_section->vma); | |
4c52953f | 12718 | |
70cc837d AM |
12719 | /* Ignore branch to self. */ |
12720 | if (sym_sec == isec) | |
12721 | continue; | |
4c52953f | 12722 | |
70cc837d AM |
12723 | /* If the called function uses the toc, we need a stub. */ |
12724 | if (sym_sec->has_toc_reloc | |
12725 | || sym_sec->makes_toc_func_call) | |
4c52953f | 12726 | { |
70cc837d | 12727 | ret = 1; |
4c52953f AM |
12728 | break; |
12729 | } | |
70cc837d AM |
12730 | |
12731 | /* Assume any branch that needs a long branch stub might in fact | |
12732 | need a plt_branch stub. A plt_branch stub uses r2. */ | |
12733 | else if (dest - (isec->output_offset | |
12734 | + isec->output_section->vma | |
6911b7dc AM |
12735 | + rel->r_offset) + (1 << 25) |
12736 | >= (2u << 25) - PPC64_LOCAL_ENTRY_OFFSET (h | |
12737 | ? h->other | |
12738 | : sym->st_other)) | |
4c52953f | 12739 | { |
70cc837d AM |
12740 | ret = 1; |
12741 | break; | |
12742 | } | |
12743 | ||
12744 | /* If calling back to a section in the process of being | |
12745 | tested, we can't say for sure that no toc adjusting stubs | |
12746 | are needed, so don't return zero. */ | |
12747 | else if (sym_sec->call_check_in_progress) | |
12748 | ret = 2; | |
12749 | ||
12750 | /* Branches to another section that itself doesn't have any TOC | |
12751 | references are OK. Recursively call ourselves to check. */ | |
12752 | else if (!sym_sec->call_check_done) | |
12753 | { | |
12754 | int recur; | |
12755 | ||
12756 | /* Mark current section as indeterminate, so that other | |
12757 | sections that call back to current won't be marked as | |
12758 | known. */ | |
12759 | isec->call_check_in_progress = 1; | |
12760 | recur = toc_adjusting_stub_needed (info, sym_sec); | |
12761 | isec->call_check_in_progress = 0; | |
12762 | ||
4c52953f AM |
12763 | if (recur != 0) |
12764 | { | |
70cc837d AM |
12765 | ret = recur; |
12766 | if (recur != 2) | |
12767 | break; | |
4c52953f AM |
12768 | } |
12769 | } | |
4c52953f | 12770 | } |
70cc837d | 12771 | |
c9594989 AM |
12772 | if (elf_symtab_hdr (isec->owner).contents |
12773 | != (unsigned char *) local_syms) | |
70cc837d AM |
12774 | free (local_syms); |
12775 | if (elf_section_data (isec)->relocs != relstart) | |
12776 | free (relstart); | |
9b5ecbd0 AM |
12777 | } |
12778 | ||
70cc837d AM |
12779 | if ((ret & 1) == 0 |
12780 | && isec->map_head.s != NULL | |
12781 | && (strcmp (isec->output_section->name, ".init") == 0 | |
12782 | || strcmp (isec->output_section->name, ".fini") == 0)) | |
12783 | { | |
12784 | if (isec->map_head.s->has_toc_reloc | |
12785 | || isec->map_head.s->makes_toc_func_call) | |
12786 | ret = 1; | |
12787 | else if (!isec->map_head.s->call_check_done) | |
12788 | { | |
12789 | int recur; | |
12790 | isec->call_check_in_progress = 1; | |
12791 | recur = toc_adjusting_stub_needed (info, isec->map_head.s); | |
12792 | isec->call_check_in_progress = 0; | |
12793 | if (recur != 0) | |
12794 | ret = recur; | |
12795 | } | |
12796 | } | |
12797 | ||
12798 | if (ret == 1) | |
12799 | isec->makes_toc_func_call = 1; | |
4c52953f | 12800 | |
9b5ecbd0 AM |
12801 | return ret; |
12802 | } | |
12803 | ||
721956f4 AM |
12804 | /* The linker repeatedly calls this function for each input section, |
12805 | in the order that input sections are linked into output sections. | |
12806 | Build lists of input sections to determine groupings between which | |
12807 | we may insert linker stubs. */ | |
12808 | ||
9b5ecbd0 | 12809 | bfd_boolean |
4ce794b7 | 12810 | ppc64_elf_next_input_section (struct bfd_link_info *info, asection *isec) |
721956f4 AM |
12811 | { |
12812 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
12813 | ||
4dfe6ac6 NC |
12814 | if (htab == NULL) |
12815 | return FALSE; | |
12816 | ||
734b6cf9 | 12817 | if ((isec->output_section->flags & SEC_CODE) != 0 |
6f20ed8a | 12818 | && isec->output_section->id < htab->sec_info_arr_size) |
721956f4 | 12819 | { |
3d6f9012 AM |
12820 | /* This happens to make the list in reverse order, |
12821 | which is what we want. */ | |
6f20ed8a AM |
12822 | htab->sec_info[isec->id].u.list |
12823 | = htab->sec_info[isec->output_section->id].u.list; | |
12824 | htab->sec_info[isec->output_section->id].u.list = isec; | |
721956f4 | 12825 | } |
ad8e1ba5 | 12826 | |
4c52953f | 12827 | if (htab->multi_toc_needed) |
9b5ecbd0 | 12828 | { |
8b974ba3 AM |
12829 | /* Analyse sections that aren't already flagged as needing a |
12830 | valid toc pointer. Exclude .fixup for the linux kernel. | |
12831 | .fixup contains branches, but only back to the function that | |
12832 | hit an exception. */ | |
12833 | if (!(isec->has_toc_reloc | |
12834 | || (isec->flags & SEC_CODE) == 0 | |
12835 | || strcmp (isec->name, ".fixup") == 0 | |
12836 | || isec->call_check_done)) | |
12837 | { | |
12838 | if (toc_adjusting_stub_needed (info, isec) < 0) | |
6683a28d | 12839 | return FALSE; |
8b974ba3 AM |
12840 | } |
12841 | /* Make all sections use the TOC assigned for this object file. | |
12842 | This will be wrong for pasted sections; We fix that in | |
12843 | check_pasted_section(). */ | |
12844 | if (elf_gp (isec->owner) != 0) | |
12845 | htab->toc_curr = elf_gp (isec->owner); | |
12846 | } | |
12847 | ||
6f20ed8a | 12848 | htab->sec_info[isec->id].toc_off = htab->toc_curr; |
9b5ecbd0 | 12849 | return TRUE; |
721956f4 AM |
12850 | } |
12851 | ||
70cc837d AM |
12852 | /* Check that all .init and .fini sections use the same toc, if they |
12853 | have toc relocs. */ | |
12854 | ||
12855 | static bfd_boolean | |
12856 | check_pasted_section (struct bfd_link_info *info, const char *name) | |
12857 | { | |
12858 | asection *o = bfd_get_section_by_name (info->output_bfd, name); | |
12859 | ||
12860 | if (o != NULL) | |
12861 | { | |
12862 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
12863 | bfd_vma toc_off = 0; | |
12864 | asection *i; | |
12865 | ||
12866 | for (i = o->map_head.s; i != NULL; i = i->map_head.s) | |
12867 | if (i->has_toc_reloc) | |
12868 | { | |
12869 | if (toc_off == 0) | |
6f20ed8a AM |
12870 | toc_off = htab->sec_info[i->id].toc_off; |
12871 | else if (toc_off != htab->sec_info[i->id].toc_off) | |
70cc837d AM |
12872 | return FALSE; |
12873 | } | |
6683a28d AM |
12874 | |
12875 | if (toc_off == 0) | |
12876 | for (i = o->map_head.s; i != NULL; i = i->map_head.s) | |
12877 | if (i->makes_toc_func_call) | |
12878 | { | |
6f20ed8a | 12879 | toc_off = htab->sec_info[i->id].toc_off; |
6683a28d AM |
12880 | break; |
12881 | } | |
12882 | ||
70cc837d AM |
12883 | /* Make sure the whole pasted function uses the same toc offset. */ |
12884 | if (toc_off != 0) | |
12885 | for (i = o->map_head.s; i != NULL; i = i->map_head.s) | |
6f20ed8a | 12886 | htab->sec_info[i->id].toc_off = toc_off; |
70cc837d AM |
12887 | } |
12888 | return TRUE; | |
12889 | } | |
12890 | ||
12891 | bfd_boolean | |
12892 | ppc64_elf_check_init_fini (struct bfd_link_info *info) | |
12893 | { | |
12894 | return (check_pasted_section (info, ".init") | |
12895 | & check_pasted_section (info, ".fini")); | |
12896 | } | |
12897 | ||
721956f4 AM |
12898 | /* See whether we can group stub sections together. Grouping stub |
12899 | sections may result in fewer stubs. More importantly, we need to | |
12900 | put all .init* and .fini* stubs at the beginning of the .init or | |
12901 | .fini output sections respectively, because glibc splits the | |
12902 | _init and _fini functions into multiple parts. Putting a stub in | |
12903 | the middle of a function is not a good idea. */ | |
12904 | ||
6f20ed8a AM |
12905 | static bfd_boolean |
12906 | group_sections (struct bfd_link_info *info, | |
4ce794b7 AM |
12907 | bfd_size_type stub_group_size, |
12908 | bfd_boolean stubs_always_before_branch) | |
721956f4 | 12909 | { |
6f20ed8a AM |
12910 | struct ppc_link_hash_table *htab; |
12911 | asection *osec; | |
7c8fe5c4 AM |
12912 | bfd_boolean suppress_size_errors; |
12913 | ||
6f20ed8a AM |
12914 | htab = ppc_hash_table (info); |
12915 | if (htab == NULL) | |
12916 | return FALSE; | |
12917 | ||
7c8fe5c4 | 12918 | suppress_size_errors = FALSE; |
7c8fe5c4 AM |
12919 | if (stub_group_size == 1) |
12920 | { | |
12921 | /* Default values. */ | |
12922 | if (stubs_always_before_branch) | |
09f92717 | 12923 | stub_group_size = 0x1e00000; |
7c8fe5c4 | 12924 | else |
09f92717 | 12925 | stub_group_size = 0x1c00000; |
7c8fe5c4 AM |
12926 | suppress_size_errors = TRUE; |
12927 | } | |
12928 | ||
6f20ed8a | 12929 | for (osec = info->output_bfd->sections; osec != NULL; osec = osec->next) |
721956f4 | 12930 | { |
6f20ed8a AM |
12931 | asection *tail; |
12932 | ||
12933 | if (osec->id >= htab->sec_info_arr_size) | |
12934 | continue; | |
12935 | ||
12936 | tail = htab->sec_info[osec->id].u.list; | |
734b6cf9 | 12937 | while (tail != NULL) |
721956f4 | 12938 | { |
734b6cf9 AM |
12939 | asection *curr; |
12940 | asection *prev; | |
12941 | bfd_size_type total; | |
12942 | bfd_boolean big_sec; | |
12943 | bfd_vma curr_toc; | |
6f20ed8a | 12944 | struct map_stub *group; |
09f92717 | 12945 | bfd_size_type group_size; |
734b6cf9 AM |
12946 | |
12947 | curr = tail; | |
eea6121a | 12948 | total = tail->size; |
09f92717 AM |
12949 | group_size = (ppc64_elf_section_data (tail) != NULL |
12950 | && ppc64_elf_section_data (tail)->has_14bit_branch | |
12951 | ? stub_group_size >> 10 : stub_group_size); | |
12952 | ||
12953 | big_sec = total > group_size; | |
7c8fe5c4 | 12954 | if (big_sec && !suppress_size_errors) |
695344c0 | 12955 | /* xgettext:c-format */ |
871b3ab2 | 12956 | _bfd_error_handler (_("%pB section %pA exceeds stub group size"), |
4eca0228 | 12957 | tail->owner, tail); |
6f20ed8a | 12958 | curr_toc = htab->sec_info[tail->id].toc_off; |
734b6cf9 | 12959 | |
6f20ed8a | 12960 | while ((prev = htab->sec_info[curr->id].u.list) != NULL |
734b6cf9 | 12961 | && ((total += curr->output_offset - prev->output_offset) |
6bee8834 AM |
12962 | < (ppc64_elf_section_data (prev) != NULL |
12963 | && ppc64_elf_section_data (prev)->has_14bit_branch | |
09f92717 | 12964 | ? (group_size = stub_group_size >> 10) : group_size)) |
6f20ed8a | 12965 | && htab->sec_info[prev->id].toc_off == curr_toc) |
734b6cf9 AM |
12966 | curr = prev; |
12967 | ||
12968 | /* OK, the size from the start of CURR to the end is less | |
09f92717 | 12969 | than group_size and thus can be handled by one stub |
734b6cf9 | 12970 | section. (or the tail section is itself larger than |
09f92717 AM |
12971 | group_size, in which case we may be toast.) We should |
12972 | really be keeping track of the total size of stubs added | |
12973 | here, as stubs contribute to the final output section | |
12974 | size. That's a little tricky, and this way will only | |
12975 | break if stubs added make the total size more than 2^25, | |
12976 | ie. for the default stub_group_size, if stubs total more | |
12977 | than 2097152 bytes, or nearly 75000 plt call stubs. */ | |
6f20ed8a AM |
12978 | group = bfd_alloc (curr->owner, sizeof (*group)); |
12979 | if (group == NULL) | |
12980 | return FALSE; | |
12981 | group->link_sec = curr; | |
12982 | group->stub_sec = NULL; | |
a4b6fadd | 12983 | group->needs_save_res = 0; |
df136d64 AM |
12984 | group->lr_restore = 0; |
12985 | group->eh_size = 0; | |
12986 | group->eh_base = 0; | |
a4b6fadd AM |
12987 | group->next = htab->group; |
12988 | htab->group = group; | |
734b6cf9 | 12989 | do |
721956f4 | 12990 | { |
6f20ed8a | 12991 | prev = htab->sec_info[tail->id].u.list; |
734b6cf9 | 12992 | /* Set up this stub group. */ |
6f20ed8a | 12993 | htab->sec_info[tail->id].u.group = group; |
721956f4 | 12994 | } |
734b6cf9 AM |
12995 | while (tail != curr && (tail = prev) != NULL); |
12996 | ||
09f92717 | 12997 | /* But wait, there's more! Input sections up to group_size |
734b6cf9 AM |
12998 | bytes before the stub section can be handled by it too. |
12999 | Don't do this if we have a really large section after the | |
13000 | stubs, as adding more stubs increases the chance that | |
13001 | branches may not reach into the stub section. */ | |
13002 | if (!stubs_always_before_branch && !big_sec) | |
13003 | { | |
13004 | total = 0; | |
13005 | while (prev != NULL | |
13006 | && ((total += tail->output_offset - prev->output_offset) | |
6bee8834 AM |
13007 | < (ppc64_elf_section_data (prev) != NULL |
13008 | && ppc64_elf_section_data (prev)->has_14bit_branch | |
2cdcc330 AM |
13009 | ? (group_size = stub_group_size >> 10) |
13010 | : group_size)) | |
6f20ed8a | 13011 | && htab->sec_info[prev->id].toc_off == curr_toc) |
734b6cf9 AM |
13012 | { |
13013 | tail = prev; | |
6f20ed8a AM |
13014 | prev = htab->sec_info[tail->id].u.list; |
13015 | htab->sec_info[tail->id].u.group = group; | |
734b6cf9 AM |
13016 | } |
13017 | } | |
13018 | tail = prev; | |
721956f4 AM |
13019 | } |
13020 | } | |
6f20ed8a | 13021 | return TRUE; |
721956f4 AM |
13022 | } |
13023 | ||
58d180e8 AM |
13024 | static const unsigned char glink_eh_frame_cie[] = |
13025 | { | |
13026 | 0, 0, 0, 16, /* length. */ | |
13027 | 0, 0, 0, 0, /* id. */ | |
13028 | 1, /* CIE version. */ | |
13029 | 'z', 'R', 0, /* Augmentation string. */ | |
13030 | 4, /* Code alignment. */ | |
13031 | 0x78, /* Data alignment. */ | |
13032 | 65, /* RA reg. */ | |
13033 | 1, /* Augmentation size. */ | |
13034 | DW_EH_PE_pcrel | DW_EH_PE_sdata4, /* FDE encoding. */ | |
2e0ce1c8 | 13035 | DW_CFA_def_cfa, 1, 0 /* def_cfa: r1 offset 0. */ |
58d180e8 AM |
13036 | }; |
13037 | ||
d969d15f AM |
13038 | /* Stripping output sections is normally done before dynamic section |
13039 | symbols have been allocated. This function is called later, and | |
13040 | handles cases like htab->brlt which is mapped to its own output | |
13041 | section. */ | |
13042 | ||
13043 | static void | |
13044 | maybe_strip_output (struct bfd_link_info *info, asection *isec) | |
13045 | { | |
13046 | if (isec->size == 0 | |
13047 | && isec->output_section->size == 0 | |
53d8967a | 13048 | && !(isec->output_section->flags & SEC_KEEP) |
d969d15f AM |
13049 | && !bfd_section_removed_from_list (info->output_bfd, |
13050 | isec->output_section) | |
13051 | && elf_section_data (isec->output_section)->dynindx == 0) | |
13052 | { | |
13053 | isec->output_section->flags |= SEC_EXCLUDE; | |
13054 | bfd_section_list_remove (info->output_bfd, isec->output_section); | |
13055 | info->output_bfd->section_count--; | |
13056 | } | |
13057 | } | |
13058 | ||
721956f4 AM |
13059 | /* Determine and set the size of the stub section for a final link. |
13060 | ||
13061 | The basic idea here is to examine all the relocations looking for | |
13062 | PC-relative calls to a target that is unreachable with a "bl" | |
13063 | instruction. */ | |
13064 | ||
b34976b6 | 13065 | bfd_boolean |
e7d1c40c | 13066 | ppc64_elf_size_stubs (struct bfd_link_info *info) |
721956f4 AM |
13067 | { |
13068 | bfd_size_type stub_group_size; | |
b34976b6 | 13069 | bfd_boolean stubs_always_before_branch; |
721956f4 AM |
13070 | struct ppc_link_hash_table *htab = ppc_hash_table (info); |
13071 | ||
4dfe6ac6 NC |
13072 | if (htab == NULL) |
13073 | return FALSE; | |
13074 | ||
e10a07b3 AM |
13075 | if (htab->params->power10_stubs == -1 && !htab->has_power10_relocs) |
13076 | htab->params->power10_stubs = 0; | |
13077 | ||
0e1862bb | 13078 | if (htab->params->plt_thread_safe == -1 && !bfd_link_executable (info)) |
e7d1c40c | 13079 | htab->params->plt_thread_safe = 1; |
b9e5796b | 13080 | if (!htab->opd_abi) |
e7d1c40c AM |
13081 | htab->params->plt_thread_safe = 0; |
13082 | else if (htab->params->plt_thread_safe == -1) | |
794e51c0 | 13083 | { |
e2458743 | 13084 | static const char *const thread_starter[] = |
794e51c0 AM |
13085 | { |
13086 | "pthread_create", | |
13087 | /* libstdc++ */ | |
13088 | "_ZNSt6thread15_M_start_threadESt10shared_ptrINS_10_Impl_baseEE", | |
13089 | /* librt */ | |
13090 | "aio_init", "aio_read", "aio_write", "aio_fsync", "lio_listio", | |
13091 | "mq_notify", "create_timer", | |
13092 | /* libanl */ | |
13093 | "getaddrinfo_a", | |
13094 | /* libgomp */ | |
2300b5a1 | 13095 | "GOMP_parallel", |
794e51c0 | 13096 | "GOMP_parallel_start", |
2300b5a1 | 13097 | "GOMP_parallel_loop_static", |
794e51c0 | 13098 | "GOMP_parallel_loop_static_start", |
2300b5a1 | 13099 | "GOMP_parallel_loop_dynamic", |
794e51c0 | 13100 | "GOMP_parallel_loop_dynamic_start", |
2300b5a1 | 13101 | "GOMP_parallel_loop_guided", |
794e51c0 | 13102 | "GOMP_parallel_loop_guided_start", |
2300b5a1 | 13103 | "GOMP_parallel_loop_runtime", |
794e51c0 | 13104 | "GOMP_parallel_loop_runtime_start", |
2300b5a1 | 13105 | "GOMP_parallel_sections", |
68ffbac6 | 13106 | "GOMP_parallel_sections_start", |
f9dffbf0 AM |
13107 | /* libgo */ |
13108 | "__go_go", | |
794e51c0 AM |
13109 | }; |
13110 | unsigned i; | |
13111 | ||
a4b6fadd | 13112 | for (i = 0; i < ARRAY_SIZE (thread_starter); i++) |
794e51c0 AM |
13113 | { |
13114 | struct elf_link_hash_entry *h; | |
13115 | h = elf_link_hash_lookup (&htab->elf, thread_starter[i], | |
13116 | FALSE, FALSE, TRUE); | |
e7d1c40c AM |
13117 | htab->params->plt_thread_safe = h != NULL && h->ref_regular; |
13118 | if (htab->params->plt_thread_safe) | |
794e51c0 AM |
13119 | break; |
13120 | } | |
13121 | } | |
e7d1c40c AM |
13122 | stubs_always_before_branch = htab->params->group_size < 0; |
13123 | if (htab->params->group_size < 0) | |
13124 | stub_group_size = -htab->params->group_size; | |
721956f4 | 13125 | else |
e7d1c40c | 13126 | stub_group_size = htab->params->group_size; |
721956f4 | 13127 | |
6f20ed8a AM |
13128 | if (!group_sections (info, stub_group_size, stubs_always_before_branch)) |
13129 | return FALSE; | |
721956f4 | 13130 | |
a804e476 AM |
13131 | htab->tga_group = NULL; |
13132 | if (!htab->params->no_tls_get_addr_regsave | |
13133 | && htab->tga_desc_fd != NULL | |
13134 | && (htab->tga_desc_fd->elf.root.type == bfd_link_hash_undefined | |
13135 | || htab->tga_desc_fd->elf.root.type == bfd_link_hash_undefweak) | |
13136 | && htab->tls_get_addr_fd != NULL | |
13137 | && is_static_defined (&htab->tls_get_addr_fd->elf)) | |
13138 | { | |
13139 | asection *sym_sec, *code_sec, *stub_sec; | |
13140 | bfd_vma sym_value; | |
13141 | struct _opd_sec_data *opd; | |
13142 | ||
13143 | sym_sec = htab->tls_get_addr_fd->elf.root.u.def.section; | |
13144 | sym_value = defined_sym_val (&htab->tls_get_addr_fd->elf); | |
13145 | code_sec = sym_sec; | |
13146 | opd = get_opd_info (sym_sec); | |
13147 | if (opd != NULL) | |
13148 | opd_entry_value (sym_sec, sym_value, &code_sec, NULL, FALSE); | |
13149 | htab->tga_group = htab->sec_info[code_sec->id].u.group; | |
13150 | stub_sec = (*htab->params->add_stub_section) (".tga_desc.stub", | |
13151 | htab->tga_group->link_sec); | |
13152 | if (stub_sec == NULL) | |
13153 | return FALSE; | |
13154 | htab->tga_group->stub_sec = stub_sec; | |
13155 | ||
13156 | htab->tga_desc_fd->elf.root.type = bfd_link_hash_defined; | |
13157 | htab->tga_desc_fd->elf.root.u.def.section = stub_sec; | |
13158 | htab->tga_desc_fd->elf.root.u.def.value = 0; | |
13159 | htab->tga_desc_fd->elf.type = STT_FUNC; | |
13160 | htab->tga_desc_fd->elf.def_regular = 1; | |
13161 | htab->tga_desc_fd->elf.non_elf = 0; | |
13162 | _bfd_elf_link_hash_hide_symbol (info, &htab->tga_desc_fd->elf, TRUE); | |
13163 | } | |
13164 | ||
c9301e31 AM |
13165 | #define STUB_SHRINK_ITER 20 |
13166 | /* Loop until no stubs added. After iteration 20 of this loop we may | |
13167 | exit on a stub section shrinking. This is to break out of a | |
13168 | pathological case where adding stubs on one iteration decreases | |
13169 | section gaps (perhaps due to alignment), which then requires | |
13170 | fewer or smaller stubs on the next iteration. */ | |
13171 | ||
721956f4 AM |
13172 | while (1) |
13173 | { | |
13174 | bfd *input_bfd; | |
13175 | unsigned int bfd_indx; | |
a4b6fadd | 13176 | struct map_stub *group; |
721956f4 AM |
13177 | |
13178 | htab->stub_iteration += 1; | |
721956f4 AM |
13179 | |
13180 | for (input_bfd = info->input_bfds, bfd_indx = 0; | |
13181 | input_bfd != NULL; | |
c72f2fb2 | 13182 | input_bfd = input_bfd->link.next, bfd_indx++) |
721956f4 AM |
13183 | { |
13184 | Elf_Internal_Shdr *symtab_hdr; | |
13185 | asection *section; | |
6cdc0ccc | 13186 | Elf_Internal_Sym *local_syms = NULL; |
721956f4 | 13187 | |
0c8d6e5c | 13188 | if (!is_ppc64_elf (input_bfd)) |
67f93c31 AM |
13189 | continue; |
13190 | ||
721956f4 | 13191 | /* We'll need the symbol table in a second. */ |
0ffa91dd | 13192 | symtab_hdr = &elf_symtab_hdr (input_bfd); |
721956f4 AM |
13193 | if (symtab_hdr->sh_info == 0) |
13194 | continue; | |
13195 | ||
721956f4 AM |
13196 | /* Walk over each section attached to the input bfd. */ |
13197 | for (section = input_bfd->sections; | |
13198 | section != NULL; | |
13199 | section = section->next) | |
13200 | { | |
721956f4 | 13201 | Elf_Internal_Rela *internal_relocs, *irelaend, *irela; |
721956f4 AM |
13202 | |
13203 | /* If there aren't any relocs, then there's nothing more | |
13204 | to do. */ | |
13205 | if ((section->flags & SEC_RELOC) == 0 | |
12c0f757 AM |
13206 | || (section->flags & SEC_ALLOC) == 0 |
13207 | || (section->flags & SEC_LOAD) == 0 | |
13208 | || (section->flags & SEC_CODE) == 0 | |
721956f4 AM |
13209 | || section->reloc_count == 0) |
13210 | continue; | |
13211 | ||
13212 | /* If this section is a link-once section that will be | |
13213 | discarded, then don't create any stubs. */ | |
13214 | if (section->output_section == NULL | |
927be08e | 13215 | || section->output_section->owner != info->output_bfd) |
721956f4 AM |
13216 | continue; |
13217 | ||
1e2f5b6e AM |
13218 | /* Get the relocs. */ |
13219 | internal_relocs | |
4ce794b7 | 13220 | = _bfd_elf_link_read_relocs (input_bfd, section, NULL, NULL, |
45d6a902 | 13221 | info->keep_memory); |
721956f4 | 13222 | if (internal_relocs == NULL) |
1e2f5b6e | 13223 | goto error_ret_free_local; |
721956f4 AM |
13224 | |
13225 | /* Now examine each relocation. */ | |
13226 | irela = internal_relocs; | |
13227 | irelaend = irela + section->reloc_count; | |
13228 | for (; irela < irelaend; irela++) | |
13229 | { | |
4ce794b7 AM |
13230 | enum elf_ppc64_reloc_type r_type; |
13231 | unsigned int r_indx; | |
721956f4 AM |
13232 | enum ppc_stub_type stub_type; |
13233 | struct ppc_stub_hash_entry *stub_entry; | |
8387904d | 13234 | asection *sym_sec, *code_sec; |
e054468f | 13235 | bfd_vma sym_value, code_value; |
721956f4 | 13236 | bfd_vma destination; |
6911b7dc | 13237 | unsigned long local_off; |
8843416a | 13238 | bfd_boolean ok_dest; |
721956f4 | 13239 | struct ppc_link_hash_entry *hash; |
8387904d | 13240 | struct ppc_link_hash_entry *fdh; |
411e1bfb AM |
13241 | struct elf_link_hash_entry *h; |
13242 | Elf_Internal_Sym *sym; | |
721956f4 AM |
13243 | char *stub_name; |
13244 | const asection *id_sec; | |
74f0fb50 | 13245 | struct _opd_sec_data *opd; |
e054468f | 13246 | struct plt_entry *plt_ent; |
721956f4 AM |
13247 | |
13248 | r_type = ELF64_R_TYPE (irela->r_info); | |
13249 | r_indx = ELF64_R_SYM (irela->r_info); | |
13250 | ||
4ce794b7 | 13251 | if (r_type >= R_PPC64_max) |
721956f4 AM |
13252 | { |
13253 | bfd_set_error (bfd_error_bad_value); | |
6cdc0ccc | 13254 | goto error_ret_free_internal; |
721956f4 AM |
13255 | } |
13256 | ||
13257 | /* Only look for stubs on branch instructions. */ | |
4ce794b7 | 13258 | if (r_type != R_PPC64_REL24 |
05d0e962 | 13259 | && r_type != R_PPC64_REL24_NOTOC |
4ce794b7 AM |
13260 | && r_type != R_PPC64_REL14 |
13261 | && r_type != R_PPC64_REL14_BRTAKEN | |
13262 | && r_type != R_PPC64_REL14_BRNTAKEN) | |
721956f4 AM |
13263 | continue; |
13264 | ||
13265 | /* Now determine the call target, its name, value, | |
13266 | section. */ | |
411e1bfb AM |
13267 | if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, |
13268 | r_indx, input_bfd)) | |
13269 | goto error_ret_free_internal; | |
ed7007c1 | 13270 | hash = ppc_elf_hash_entry (h); |
411e1bfb | 13271 | |
8843416a | 13272 | ok_dest = FALSE; |
8387904d | 13273 | fdh = NULL; |
7fe2b9a6 | 13274 | sym_value = 0; |
411e1bfb | 13275 | if (hash == NULL) |
721956f4 | 13276 | { |
411e1bfb | 13277 | sym_value = sym->st_value; |
c27b8c2a AM |
13278 | if (sym_sec != NULL |
13279 | && sym_sec->output_section != NULL) | |
13280 | ok_dest = TRUE; | |
721956f4 | 13281 | } |
7fe2b9a6 AM |
13282 | else if (hash->elf.root.type == bfd_link_hash_defined |
13283 | || hash->elf.root.type == bfd_link_hash_defweak) | |
13284 | { | |
13285 | sym_value = hash->elf.root.u.def.value; | |
13286 | if (sym_sec->output_section != NULL) | |
13287 | ok_dest = TRUE; | |
13288 | } | |
13289 | else if (hash->elf.root.type == bfd_link_hash_undefweak | |
13290 | || hash->elf.root.type == bfd_link_hash_undefined) | |
721956f4 | 13291 | { |
99877b66 | 13292 | /* Recognise an old ABI func code entry sym, and |
7fe2b9a6 AM |
13293 | use the func descriptor sym instead if it is |
13294 | defined. */ | |
ceb1f1ef | 13295 | if (hash->elf.root.root.string[0] == '.' |
8c5b4e52 | 13296 | && hash->oh != NULL) |
8387904d | 13297 | { |
8c5b4e52 | 13298 | fdh = ppc_follow_link (hash->oh); |
8387904d AM |
13299 | if (fdh->elf.root.type == bfd_link_hash_defined |
13300 | || fdh->elf.root.type == bfd_link_hash_defweak) | |
13301 | { | |
13302 | sym_sec = fdh->elf.root.u.def.section; | |
13303 | sym_value = fdh->elf.root.u.def.value; | |
13304 | if (sym_sec->output_section != NULL) | |
13305 | ok_dest = TRUE; | |
13306 | } | |
99877b66 AM |
13307 | else |
13308 | fdh = NULL; | |
8387904d | 13309 | } |
7fe2b9a6 AM |
13310 | } |
13311 | else | |
13312 | { | |
13313 | bfd_set_error (bfd_error_bad_value); | |
13314 | goto error_ret_free_internal; | |
721956f4 AM |
13315 | } |
13316 | ||
8843416a | 13317 | destination = 0; |
6911b7dc | 13318 | local_off = 0; |
8843416a AM |
13319 | if (ok_dest) |
13320 | { | |
13321 | sym_value += irela->r_addend; | |
13322 | destination = (sym_value | |
13323 | + sym_sec->output_offset | |
13324 | + sym_sec->output_section->vma); | |
6911b7dc AM |
13325 | local_off = PPC64_LOCAL_ENTRY_OFFSET (hash |
13326 | ? hash->elf.other | |
13327 | : sym->st_other); | |
8843416a AM |
13328 | } |
13329 | ||
8387904d | 13330 | code_sec = sym_sec; |
e054468f | 13331 | code_value = sym_value; |
74f0fb50 AM |
13332 | opd = get_opd_info (sym_sec); |
13333 | if (opd != NULL) | |
8387904d AM |
13334 | { |
13335 | bfd_vma dest; | |
13336 | ||
74f0fb50 | 13337 | if (hash == NULL && opd->adjust != NULL) |
8387904d | 13338 | { |
51aecdc5 | 13339 | long adjust = opd->adjust[OPD_NDX (sym_value)]; |
8387904d AM |
13340 | if (adjust == -1) |
13341 | continue; | |
e054468f | 13342 | code_value += adjust; |
8387904d AM |
13343 | sym_value += adjust; |
13344 | } | |
13345 | dest = opd_entry_value (sym_sec, sym_value, | |
aef36ac1 | 13346 | &code_sec, &code_value, FALSE); |
8387904d AM |
13347 | if (dest != (bfd_vma) -1) |
13348 | { | |
13349 | destination = dest; | |
13350 | if (fdh != NULL) | |
13351 | { | |
13352 | /* Fixup old ABI sym to point at code | |
13353 | entry. */ | |
99877b66 | 13354 | hash->elf.root.type = bfd_link_hash_defweak; |
8387904d | 13355 | hash->elf.root.u.def.section = code_sec; |
e054468f | 13356 | hash->elf.root.u.def.value = code_value; |
8387904d AM |
13357 | } |
13358 | } | |
13359 | } | |
13360 | ||
721956f4 | 13361 | /* Determine what (if any) linker stub is needed. */ |
e054468f | 13362 | plt_ent = NULL; |
721956f4 | 13363 | stub_type = ppc_type_of_stub (section, irela, &hash, |
6911b7dc AM |
13364 | &plt_ent, destination, |
13365 | local_off); | |
ad8e1ba5 | 13366 | |
05d0e962 AM |
13367 | if (r_type == R_PPC64_REL24_NOTOC) |
13368 | { | |
13369 | if (stub_type == ppc_stub_plt_call) | |
13370 | stub_type = ppc_stub_plt_call_notoc; | |
13371 | else if (stub_type == ppc_stub_long_branch | |
13372 | || (code_sec != NULL | |
13373 | && code_sec->output_section != NULL | |
13374 | && (((hash ? hash->elf.other : sym->st_other) | |
13375 | & STO_PPC64_LOCAL_MASK) | |
4a4e7361 | 13376 | > 1 << STO_PPC64_LOCAL_BIT))) |
05d0e962 AM |
13377 | stub_type = ppc_stub_long_branch_notoc; |
13378 | } | |
13379 | else if (stub_type != ppc_stub_plt_call) | |
ad8e1ba5 AM |
13380 | { |
13381 | /* Check whether we need a TOC adjusting stub. | |
13382 | Since the linker pastes together pieces from | |
13383 | different object files when creating the | |
13384 | _init and _fini functions, it may be that a | |
13385 | call to what looks like a local sym is in | |
13386 | fact a call needing a TOC adjustment. */ | |
33cb30a1 AM |
13387 | if ((code_sec != NULL |
13388 | && code_sec->output_section != NULL | |
13389 | && (htab->sec_info[code_sec->id].toc_off | |
13390 | != htab->sec_info[section->id].toc_off) | |
13391 | && (code_sec->has_toc_reloc | |
13392 | || code_sec->makes_toc_func_call)) | |
13393 | || (((hash ? hash->elf.other : sym->st_other) | |
13394 | & STO_PPC64_LOCAL_MASK) | |
13395 | == 1 << STO_PPC64_LOCAL_BIT)) | |
ad8e1ba5 AM |
13396 | stub_type = ppc_stub_long_branch_r2off; |
13397 | } | |
13398 | ||
721956f4 AM |
13399 | if (stub_type == ppc_stub_none) |
13400 | continue; | |
13401 | ||
411e1bfb AM |
13402 | /* __tls_get_addr calls might be eliminated. */ |
13403 | if (stub_type != ppc_stub_plt_call | |
05d0e962 | 13404 | && stub_type != ppc_stub_plt_call_notoc |
411e1bfb | 13405 | && hash != NULL |
ed7007c1 | 13406 | && is_tls_get_addr (&hash->elf, htab) |
411e1bfb AM |
13407 | && section->has_tls_reloc |
13408 | && irela != internal_relocs) | |
13409 | { | |
13410 | /* Get tls info. */ | |
f961d9dd | 13411 | unsigned char *tls_mask; |
411e1bfb | 13412 | |
3a71aa26 | 13413 | if (!get_tls_mask (&tls_mask, NULL, NULL, &local_syms, |
411e1bfb AM |
13414 | irela - 1, input_bfd)) |
13415 | goto error_ret_free_internal; | |
abc489c6 AM |
13416 | if ((*tls_mask & TLS_TLS) != 0 |
13417 | && (*tls_mask & (TLS_GD | TLS_LD)) == 0) | |
411e1bfb AM |
13418 | continue; |
13419 | } | |
13420 | ||
f378ab09 | 13421 | if (stub_type == ppc_stub_plt_call) |
794e51c0 | 13422 | { |
6e1816be AM |
13423 | if (!htab->opd_abi |
13424 | && htab->params->plt_localentry0 != 0 | |
13425 | && is_elfv2_localentry0 (&hash->elf)) | |
13426 | htab->has_plt_localentry0 = 1; | |
13427 | else if (irela + 1 < irelaend | |
13428 | && irela[1].r_offset == irela->r_offset + 4 | |
13429 | && (ELF64_R_TYPE (irela[1].r_info) | |
13430 | == R_PPC64_TOCSAVE)) | |
f378ab09 AM |
13431 | { |
13432 | if (!tocsave_find (htab, INSERT, | |
13433 | &local_syms, irela + 1, input_bfd)) | |
13434 | goto error_ret_free_internal; | |
13435 | } | |
f378ab09 AM |
13436 | else |
13437 | stub_type = ppc_stub_plt_call_r2save; | |
794e51c0 | 13438 | } |
3b421ab3 | 13439 | |
721956f4 | 13440 | /* Support for grouping stub sections. */ |
6f20ed8a | 13441 | id_sec = htab->sec_info[section->id].u.group->link_sec; |
721956f4 AM |
13442 | |
13443 | /* Get the name of this stub. */ | |
13444 | stub_name = ppc_stub_name (id_sec, sym_sec, hash, irela); | |
13445 | if (!stub_name) | |
13446 | goto error_ret_free_internal; | |
13447 | ||
13448 | stub_entry = ppc_stub_hash_lookup (&htab->stub_hash_table, | |
b34976b6 | 13449 | stub_name, FALSE, FALSE); |
721956f4 AM |
13450 | if (stub_entry != NULL) |
13451 | { | |
05d0e962 | 13452 | enum ppc_stub_type old_type; |
e10a07b3 | 13453 | |
05d0e962 AM |
13454 | /* A stub has already been created, but it may |
13455 | not be the required type. We shouldn't be | |
13456 | transitioning from plt_call to long_branch | |
13457 | stubs or vice versa, but we might be | |
13458 | upgrading from plt_call to plt_call_r2save or | |
13459 | from long_branch to long_branch_r2off. */ | |
721956f4 | 13460 | free (stub_name); |
e10a07b3 AM |
13461 | if (htab->params->power10_stubs == -1) |
13462 | { | |
13463 | /* For --power10-stubs=auto, don't merge _notoc | |
13464 | and other varieties of stubs. (The _both | |
13465 | variety won't be created.) */ | |
13466 | bfd_boolean notoc = r_type == R_PPC64_REL24_NOTOC; | |
13467 | struct ppc_stub_hash_entry *alt_stub | |
13468 | = select_alt_stub (stub_entry, notoc); | |
13469 | ||
13470 | if (alt_stub == NULL) | |
13471 | { | |
13472 | alt_stub = (struct ppc_stub_hash_entry *) | |
13473 | stub_hash_newfunc (NULL, | |
13474 | &htab->stub_hash_table, | |
13475 | stub_entry->root.string); | |
13476 | if (alt_stub == NULL) | |
13477 | { | |
13478 | /* xgettext:c-format */ | |
13479 | _bfd_error_handler | |
13480 | (_("%pB: cannot create stub entry %s"), | |
13481 | section->owner, stub_entry->root.string); | |
13482 | goto error_ret_free_internal; | |
13483 | } | |
13484 | *alt_stub = *stub_entry; | |
13485 | stub_entry->root.next = &alt_stub->root; | |
13486 | if (notoc) | |
13487 | /* Sort notoc stubs first, for no good | |
13488 | reason. */ | |
13489 | alt_stub = stub_entry; | |
13490 | alt_stub->stub_type = stub_type; | |
13491 | } | |
13492 | stub_entry = alt_stub; | |
13493 | } | |
05d0e962 AM |
13494 | old_type = stub_entry->stub_type; |
13495 | switch (old_type) | |
13496 | { | |
13497 | default: | |
13498 | abort (); | |
13499 | ||
13500 | case ppc_stub_save_res: | |
13501 | continue; | |
13502 | ||
13503 | case ppc_stub_plt_call: | |
13504 | case ppc_stub_plt_call_r2save: | |
13505 | case ppc_stub_plt_call_notoc: | |
13506 | case ppc_stub_plt_call_both: | |
13507 | if (stub_type == ppc_stub_plt_call) | |
13508 | continue; | |
13509 | else if (stub_type == ppc_stub_plt_call_r2save) | |
13510 | { | |
13511 | if (old_type == ppc_stub_plt_call_notoc) | |
13512 | stub_type = ppc_stub_plt_call_both; | |
13513 | } | |
13514 | else if (stub_type == ppc_stub_plt_call_notoc) | |
13515 | { | |
13516 | if (old_type == ppc_stub_plt_call_r2save) | |
13517 | stub_type = ppc_stub_plt_call_both; | |
13518 | } | |
13519 | else | |
13520 | abort (); | |
13521 | break; | |
13522 | ||
13523 | case ppc_stub_plt_branch: | |
13524 | case ppc_stub_plt_branch_r2off: | |
13525 | case ppc_stub_plt_branch_notoc: | |
13526 | case ppc_stub_plt_branch_both: | |
13527 | old_type += (ppc_stub_long_branch | |
13528 | - ppc_stub_plt_branch); | |
13529 | /* Fall through. */ | |
13530 | case ppc_stub_long_branch: | |
13531 | case ppc_stub_long_branch_r2off: | |
13532 | case ppc_stub_long_branch_notoc: | |
13533 | case ppc_stub_long_branch_both: | |
13534 | if (stub_type == ppc_stub_long_branch) | |
13535 | continue; | |
13536 | else if (stub_type == ppc_stub_long_branch_r2off) | |
13537 | { | |
13538 | if (old_type == ppc_stub_long_branch_notoc) | |
13539 | stub_type = ppc_stub_long_branch_both; | |
13540 | } | |
13541 | else if (stub_type == ppc_stub_long_branch_notoc) | |
13542 | { | |
13543 | if (old_type == ppc_stub_long_branch_r2off) | |
13544 | stub_type = ppc_stub_long_branch_both; | |
13545 | } | |
13546 | else | |
13547 | abort (); | |
13548 | break; | |
13549 | } | |
13550 | if (old_type < stub_type) | |
794e51c0 | 13551 | stub_entry->stub_type = stub_type; |
721956f4 AM |
13552 | continue; |
13553 | } | |
13554 | ||
25f53a85 | 13555 | stub_entry = ppc_add_stub (stub_name, section, info); |
721956f4 AM |
13556 | if (stub_entry == NULL) |
13557 | { | |
13558 | free (stub_name); | |
6cdc0ccc AM |
13559 | error_ret_free_internal: |
13560 | if (elf_section_data (section)->relocs == NULL) | |
13561 | free (internal_relocs); | |
13562 | error_ret_free_local: | |
c9594989 AM |
13563 | if (symtab_hdr->contents |
13564 | != (unsigned char *) local_syms) | |
6cdc0ccc | 13565 | free (local_syms); |
b34976b6 | 13566 | return FALSE; |
721956f4 AM |
13567 | } |
13568 | ||
ad8e1ba5 | 13569 | stub_entry->stub_type = stub_type; |
05d0e962 AM |
13570 | if (stub_type >= ppc_stub_plt_call |
13571 | && stub_type <= ppc_stub_plt_call_both) | |
e054468f | 13572 | { |
05d0e962 AM |
13573 | stub_entry->target_value = sym_value; |
13574 | stub_entry->target_section = sym_sec; | |
e054468f AM |
13575 | } |
13576 | else | |
13577 | { | |
05d0e962 AM |
13578 | stub_entry->target_value = code_value; |
13579 | stub_entry->target_section = code_sec; | |
e054468f | 13580 | } |
721956f4 | 13581 | stub_entry->h = hash; |
e054468f | 13582 | stub_entry->plt_ent = plt_ent; |
2d7ad24e AM |
13583 | stub_entry->symtype |
13584 | = hash ? hash->elf.type : ELF_ST_TYPE (sym->st_info); | |
6911b7dc | 13585 | stub_entry->other = hash ? hash->elf.other : sym->st_other; |
ee75fd95 | 13586 | |
3d58e1fc AM |
13587 | if (hash != NULL |
13588 | && (hash->elf.root.type == bfd_link_hash_defined | |
13589 | || hash->elf.root.type == bfd_link_hash_defweak)) | |
ee75fd95 | 13590 | htab->stub_globals += 1; |
721956f4 AM |
13591 | } |
13592 | ||
13593 | /* We're done with the internal relocs, free them. */ | |
6cdc0ccc | 13594 | if (elf_section_data (section)->relocs != internal_relocs) |
1e2f5b6e | 13595 | free (internal_relocs); |
721956f4 | 13596 | } |
6cdc0ccc AM |
13597 | |
13598 | if (local_syms != NULL | |
13599 | && symtab_hdr->contents != (unsigned char *) local_syms) | |
13600 | { | |
13601 | if (!info->keep_memory) | |
13602 | free (local_syms); | |
13603 | else | |
13604 | symtab_hdr->contents = (unsigned char *) local_syms; | |
13605 | } | |
721956f4 AM |
13606 | } |
13607 | ||
5c3dead3 | 13608 | /* We may have added some stubs. Find out the new size of the |
721956f4 | 13609 | stub sections. */ |
d4aaa2a0 | 13610 | for (group = htab->group; group != NULL; group = group->next) |
df136d64 AM |
13611 | { |
13612 | group->lr_restore = 0; | |
13613 | group->eh_size = 0; | |
13614 | if (group->stub_sec != NULL) | |
13615 | { | |
13616 | asection *stub_sec = group->stub_sec; | |
13617 | ||
13618 | if (htab->stub_iteration <= STUB_SHRINK_ITER | |
13619 | || stub_sec->rawsize < stub_sec->size) | |
13620 | /* Past STUB_SHRINK_ITER, rawsize is the max size seen. */ | |
13621 | stub_sec->rawsize = stub_sec->size; | |
13622 | stub_sec->size = 0; | |
13623 | stub_sec->reloc_count = 0; | |
13624 | stub_sec->flags &= ~SEC_RELOC; | |
13625 | } | |
13626 | } | |
a804e476 AM |
13627 | if (htab->tga_group != NULL) |
13628 | { | |
13629 | /* See emit_tga_desc and emit_tga_desc_eh_frame. */ | |
13630 | htab->tga_group->eh_size | |
13631 | = 1 + 2 + (htab->opd_abi != 0) + 3 + 8 * 2 + 3 + 8 + 3; | |
13632 | htab->tga_group->lr_restore = 23 * 4; | |
13633 | htab->tga_group->stub_sec->size = 24 * 4; | |
13634 | } | |
eea6121a | 13635 | |
ba21f564 AM |
13636 | if (htab->stub_iteration <= STUB_SHRINK_ITER |
13637 | || htab->brlt->rawsize < htab->brlt->size) | |
13638 | htab->brlt->rawsize = htab->brlt->size; | |
eea6121a | 13639 | htab->brlt->size = 0; |
84f5d08e AM |
13640 | htab->brlt->reloc_count = 0; |
13641 | htab->brlt->flags &= ~SEC_RELOC; | |
ee75fd95 | 13642 | if (htab->relbrlt != NULL) |
eea6121a | 13643 | htab->relbrlt->size = 0; |
721956f4 | 13644 | |
63bc6f6c | 13645 | bfd_hash_traverse (&htab->stub_hash_table, ppc_size_one_stub, info); |
721956f4 | 13646 | |
a4b6fadd AM |
13647 | for (group = htab->group; group != NULL; group = group->next) |
13648 | if (group->needs_save_res) | |
13649 | group->stub_sec->size += htab->sfpr->size; | |
13650 | ||
176a0d42 AM |
13651 | if (info->emitrelocations |
13652 | && htab->glink != NULL && htab->glink->size != 0) | |
13653 | { | |
13654 | htab->glink->reloc_count = 1; | |
13655 | htab->glink->flags |= SEC_RELOC; | |
13656 | } | |
13657 | ||
58d180e8 AM |
13658 | if (htab->glink_eh_frame != NULL |
13659 | && !bfd_is_abs_section (htab->glink_eh_frame->output_section) | |
2d0d44d5 | 13660 | && htab->glink_eh_frame->output_section->size > 8) |
58d180e8 | 13661 | { |
2e0ce1c8 | 13662 | size_t size = 0, align = 4; |
58d180e8 | 13663 | |
d4aaa2a0 | 13664 | for (group = htab->group; group != NULL; group = group->next) |
df136d64 AM |
13665 | if (group->eh_size != 0) |
13666 | size += (group->eh_size + 17 + align - 1) & -align; | |
58d180e8 | 13667 | if (htab->glink != NULL && htab->glink->size != 0) |
2e0ce1c8 | 13668 | size += (24 + align - 1) & -align; |
58d180e8 | 13669 | if (size != 0) |
2e0ce1c8 AM |
13670 | size += (sizeof (glink_eh_frame_cie) + align - 1) & -align; |
13671 | align = 1ul << htab->glink_eh_frame->output_section->alignment_power; | |
13672 | size = (size + align - 1) & -align; | |
58d180e8 AM |
13673 | htab->glink_eh_frame->rawsize = htab->glink_eh_frame->size; |
13674 | htab->glink_eh_frame->size = size; | |
13675 | } | |
13676 | ||
e7d1c40c | 13677 | if (htab->params->plt_stub_align != 0) |
d4aaa2a0 AM |
13678 | for (group = htab->group; group != NULL; group = group->next) |
13679 | if (group->stub_sec != NULL) | |
691d2e9a AM |
13680 | { |
13681 | int align = abs (htab->params->plt_stub_align); | |
13682 | group->stub_sec->size | |
13683 | = (group->stub_sec->size + (1 << align) - 1) & -(1 << align); | |
13684 | } | |
d4aaa2a0 AM |
13685 | |
13686 | for (group = htab->group; group != NULL; group = group->next) | |
13687 | if (group->stub_sec != NULL | |
13688 | && group->stub_sec->rawsize != group->stub_sec->size | |
c9301e31 | 13689 | && (htab->stub_iteration <= STUB_SHRINK_ITER |
d4aaa2a0 | 13690 | || group->stub_sec->rawsize < group->stub_sec->size)) |
5c3dead3 AM |
13691 | break; |
13692 | ||
d4aaa2a0 | 13693 | if (group == NULL |
ba21f564 AM |
13694 | && (htab->brlt->rawsize == htab->brlt->size |
13695 | || (htab->stub_iteration > STUB_SHRINK_ITER | |
13696 | && htab->brlt->rawsize > htab->brlt->size)) | |
58d180e8 | 13697 | && (htab->glink_eh_frame == NULL |
a804e476 AM |
13698 | || htab->glink_eh_frame->rawsize == htab->glink_eh_frame->size) |
13699 | && (htab->tga_group == NULL | |
13700 | || htab->stub_iteration > 1)) | |
5c3dead3 AM |
13701 | break; |
13702 | ||
721956f4 | 13703 | /* Ask the linker to do its stuff. */ |
e7d1c40c | 13704 | (*htab->params->layout_sections_again) (); |
721956f4 AM |
13705 | } |
13706 | ||
da44f4e5 AM |
13707 | if (htab->glink_eh_frame != NULL |
13708 | && htab->glink_eh_frame->size != 0) | |
13709 | { | |
13710 | bfd_vma val; | |
13711 | bfd_byte *p, *last_fde; | |
13712 | size_t last_fde_len, size, align, pad; | |
d4aaa2a0 | 13713 | struct map_stub *group; |
da44f4e5 | 13714 | |
df136d64 AM |
13715 | /* It is necessary to at least have a rough outline of the |
13716 | linker generated CIEs and FDEs written before | |
13717 | bfd_elf_discard_info is run, in order for these FDEs to be | |
13718 | indexed in .eh_frame_hdr. */ | |
da44f4e5 AM |
13719 | p = bfd_zalloc (htab->glink_eh_frame->owner, htab->glink_eh_frame->size); |
13720 | if (p == NULL) | |
13721 | return FALSE; | |
13722 | htab->glink_eh_frame->contents = p; | |
13723 | last_fde = p; | |
2e0ce1c8 | 13724 | align = 4; |
da44f4e5 AM |
13725 | |
13726 | memcpy (p, glink_eh_frame_cie, sizeof (glink_eh_frame_cie)); | |
13727 | /* CIE length (rewrite in case little-endian). */ | |
2e0ce1c8 | 13728 | last_fde_len = ((sizeof (glink_eh_frame_cie) + align - 1) & -align) - 4; |
da44f4e5 | 13729 | bfd_put_32 (htab->elf.dynobj, last_fde_len, p); |
2e0ce1c8 | 13730 | p += last_fde_len + 4; |
da44f4e5 | 13731 | |
d4aaa2a0 | 13732 | for (group = htab->group; group != NULL; group = group->next) |
df136d64 | 13733 | if (group->eh_size != 0) |
da44f4e5 | 13734 | { |
df136d64 | 13735 | group->eh_base = p - htab->glink_eh_frame->contents; |
da44f4e5 | 13736 | last_fde = p; |
df136d64 | 13737 | last_fde_len = ((group->eh_size + 17 + align - 1) & -align) - 4; |
da44f4e5 | 13738 | /* FDE length. */ |
2e0ce1c8 | 13739 | bfd_put_32 (htab->elf.dynobj, last_fde_len, p); |
da44f4e5 AM |
13740 | p += 4; |
13741 | /* CIE pointer. */ | |
13742 | val = p - htab->glink_eh_frame->contents; | |
13743 | bfd_put_32 (htab->elf.dynobj, val, p); | |
13744 | p += 4; | |
13745 | /* Offset to stub section, written later. */ | |
13746 | p += 4; | |
13747 | /* stub section size. */ | |
d4aaa2a0 | 13748 | bfd_put_32 (htab->elf.dynobj, group->stub_sec->size, p); |
da44f4e5 AM |
13749 | p += 4; |
13750 | /* Augmentation. */ | |
13751 | p += 1; | |
df136d64 AM |
13752 | /* Make sure we don't have all nops. This is enough for |
13753 | elf-eh-frame.c to detect the last non-nop opcode. */ | |
13754 | p[group->eh_size - 1] = DW_CFA_advance_loc + 1; | |
d4aaa2a0 | 13755 | p = last_fde + last_fde_len + 4; |
da44f4e5 AM |
13756 | } |
13757 | if (htab->glink != NULL && htab->glink->size != 0) | |
13758 | { | |
13759 | last_fde = p; | |
2e0ce1c8 | 13760 | last_fde_len = ((24 + align - 1) & -align) - 4; |
da44f4e5 | 13761 | /* FDE length. */ |
2e0ce1c8 | 13762 | bfd_put_32 (htab->elf.dynobj, last_fde_len, p); |
da44f4e5 AM |
13763 | p += 4; |
13764 | /* CIE pointer. */ | |
13765 | val = p - htab->glink_eh_frame->contents; | |
13766 | bfd_put_32 (htab->elf.dynobj, val, p); | |
13767 | p += 4; | |
13768 | /* Offset to .glink, written later. */ | |
13769 | p += 4; | |
13770 | /* .glink size. */ | |
13771 | bfd_put_32 (htab->elf.dynobj, htab->glink->size - 8, p); | |
13772 | p += 4; | |
13773 | /* Augmentation. */ | |
13774 | p += 1; | |
13775 | ||
13776 | *p++ = DW_CFA_advance_loc + 1; | |
13777 | *p++ = DW_CFA_register; | |
13778 | *p++ = 65; | |
9f08fa5c | 13779 | *p++ = htab->opd_abi ? 12 : 0; |
15a3a14f | 13780 | *p++ = DW_CFA_advance_loc + (htab->opd_abi ? 5 : 7); |
da44f4e5 AM |
13781 | *p++ = DW_CFA_restore_extended; |
13782 | *p++ = 65; | |
2e0ce1c8 | 13783 | p += ((24 + align - 1) & -align) - 24; |
da44f4e5 AM |
13784 | } |
13785 | /* Subsume any padding into the last FDE if user .eh_frame | |
13786 | sections are aligned more than glink_eh_frame. Otherwise any | |
13787 | zero padding will be seen as a terminator. */ | |
2e0ce1c8 | 13788 | align = 1ul << htab->glink_eh_frame->output_section->alignment_power; |
da44f4e5 | 13789 | size = p - htab->glink_eh_frame->contents; |
2e0ce1c8 | 13790 | pad = ((size + align - 1) & -align) - size; |
da44f4e5 AM |
13791 | htab->glink_eh_frame->size = size + pad; |
13792 | bfd_put_32 (htab->elf.dynobj, last_fde_len + pad, last_fde); | |
13793 | } | |
13794 | ||
d969d15f | 13795 | maybe_strip_output (info, htab->brlt); |
2efec98b AM |
13796 | if (htab->relbrlt != NULL) |
13797 | maybe_strip_output (info, htab->relbrlt); | |
d969d15f AM |
13798 | if (htab->glink_eh_frame != NULL) |
13799 | maybe_strip_output (info, htab->glink_eh_frame); | |
721956f4 | 13800 | |
b34976b6 | 13801 | return TRUE; |
721956f4 AM |
13802 | } |
13803 | ||
13804 | /* Called after we have determined section placement. If sections | |
805fc799 | 13805 | move, we'll be called again. Provide a value for TOCstart. */ |
721956f4 | 13806 | |
805fc799 | 13807 | bfd_vma |
1c865ab2 | 13808 | ppc64_elf_set_toc (struct bfd_link_info *info, bfd *obfd) |
721956f4 | 13809 | { |
805fc799 | 13810 | asection *s; |
a27e685f | 13811 | bfd_vma TOCstart, adjust; |
721956f4 | 13812 | |
43417696 AM |
13813 | if (info != NULL) |
13814 | { | |
13815 | struct elf_link_hash_entry *h; | |
13816 | struct elf_link_hash_table *htab = elf_hash_table (info); | |
13817 | ||
13818 | if (is_elf_hash_table (htab) | |
13819 | && htab->hgot != NULL) | |
13820 | h = htab->hgot; | |
13821 | else | |
13822 | { | |
13823 | h = elf_link_hash_lookup (htab, ".TOC.", FALSE, FALSE, TRUE); | |
13824 | if (is_elf_hash_table (htab)) | |
13825 | htab->hgot = h; | |
13826 | } | |
13827 | if (h != NULL | |
13828 | && h->root.type == bfd_link_hash_defined | |
13829 | && !h->root.linker_def | |
13830 | && (!is_elf_hash_table (htab) | |
13831 | || h->def_regular)) | |
13832 | { | |
ed7007c1 | 13833 | TOCstart = defined_sym_val (h) - TOC_BASE_OFF; |
43417696 AM |
13834 | _bfd_set_gp_value (obfd, TOCstart); |
13835 | return TOCstart; | |
13836 | } | |
13837 | } | |
13838 | ||
805fc799 AM |
13839 | /* The TOC consists of sections .got, .toc, .tocbss, .plt in that |
13840 | order. The TOC starts where the first of these sections starts. */ | |
13841 | s = bfd_get_section_by_name (obfd, ".got"); | |
e054468f | 13842 | if (s == NULL || (s->flags & SEC_EXCLUDE) != 0) |
805fc799 | 13843 | s = bfd_get_section_by_name (obfd, ".toc"); |
e054468f | 13844 | if (s == NULL || (s->flags & SEC_EXCLUDE) != 0) |
805fc799 | 13845 | s = bfd_get_section_by_name (obfd, ".tocbss"); |
e054468f | 13846 | if (s == NULL || (s->flags & SEC_EXCLUDE) != 0) |
805fc799 | 13847 | s = bfd_get_section_by_name (obfd, ".plt"); |
e054468f | 13848 | if (s == NULL || (s->flags & SEC_EXCLUDE) != 0) |
805fc799 AM |
13849 | { |
13850 | /* This may happen for | |
13851 | o references to TOC base (SYM@toc / TOC[tc0]) without a | |
13852 | .toc directive | |
13853 | o bad linker script | |
13854 | o --gc-sections and empty TOC sections | |
13855 | ||
13856 | FIXME: Warn user? */ | |
13857 | ||
13858 | /* Look for a likely section. We probably won't even be | |
13859 | using TOCstart. */ | |
13860 | for (s = obfd->sections; s != NULL; s = s->next) | |
e054468f AM |
13861 | if ((s->flags & (SEC_ALLOC | SEC_SMALL_DATA | SEC_READONLY |
13862 | | SEC_EXCLUDE)) | |
805fc799 AM |
13863 | == (SEC_ALLOC | SEC_SMALL_DATA)) |
13864 | break; | |
721956f4 | 13865 | if (s == NULL) |
805fc799 | 13866 | for (s = obfd->sections; s != NULL; s = s->next) |
e054468f | 13867 | if ((s->flags & (SEC_ALLOC | SEC_SMALL_DATA | SEC_EXCLUDE)) |
805fc799 AM |
13868 | == (SEC_ALLOC | SEC_SMALL_DATA)) |
13869 | break; | |
721956f4 | 13870 | if (s == NULL) |
805fc799 | 13871 | for (s = obfd->sections; s != NULL; s = s->next) |
e054468f AM |
13872 | if ((s->flags & (SEC_ALLOC | SEC_READONLY | SEC_EXCLUDE)) |
13873 | == SEC_ALLOC) | |
805fc799 | 13874 | break; |
721956f4 | 13875 | if (s == NULL) |
805fc799 | 13876 | for (s = obfd->sections; s != NULL; s = s->next) |
e054468f | 13877 | if ((s->flags & (SEC_ALLOC | SEC_EXCLUDE)) == SEC_ALLOC) |
805fc799 AM |
13878 | break; |
13879 | } | |
721956f4 | 13880 | |
805fc799 AM |
13881 | TOCstart = 0; |
13882 | if (s != NULL) | |
13883 | TOCstart = s->output_section->vma + s->output_offset; | |
721956f4 | 13884 | |
a27e685f AM |
13885 | /* Force alignment. */ |
13886 | adjust = TOCstart & (TOC_BASE_ALIGN - 1); | |
13887 | TOCstart -= adjust; | |
1c865ab2 AM |
13888 | _bfd_set_gp_value (obfd, TOCstart); |
13889 | ||
810d4e75 | 13890 | if (info != NULL && s != NULL) |
1c865ab2 AM |
13891 | { |
13892 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
13893 | ||
810d4e75 AM |
13894 | if (htab != NULL) |
13895 | { | |
13896 | if (htab->elf.hgot != NULL) | |
13897 | { | |
a27e685f | 13898 | htab->elf.hgot->root.u.def.value = TOC_BASE_OFF - adjust; |
810d4e75 AM |
13899 | htab->elf.hgot->root.u.def.section = s; |
13900 | } | |
13901 | } | |
13902 | else | |
1c865ab2 | 13903 | { |
810d4e75 AM |
13904 | struct bfd_link_hash_entry *bh = NULL; |
13905 | _bfd_generic_link_add_one_symbol (info, obfd, ".TOC.", BSF_GLOBAL, | |
a27e685f AM |
13906 | s, TOC_BASE_OFF - adjust, |
13907 | NULL, FALSE, FALSE, &bh); | |
1c865ab2 AM |
13908 | } |
13909 | } | |
805fc799 | 13910 | return TOCstart; |
721956f4 AM |
13911 | } |
13912 | ||
a345bc8d | 13913 | /* Called via elf_link_hash_traverse from ppc64_elf_build_stubs to |
49c09209 | 13914 | write out any global entry stubs, and PLT relocations. */ |
a345bc8d AM |
13915 | |
13916 | static bfd_boolean | |
49c09209 | 13917 | build_global_entry_stubs_and_plt (struct elf_link_hash_entry *h, void *inf) |
a345bc8d AM |
13918 | { |
13919 | struct bfd_link_info *info; | |
13920 | struct ppc_link_hash_table *htab; | |
49c09209 | 13921 | struct plt_entry *ent; |
a345bc8d AM |
13922 | asection *s; |
13923 | ||
13924 | if (h->root.type == bfd_link_hash_indirect) | |
13925 | return TRUE; | |
13926 | ||
49c09209 AM |
13927 | info = inf; |
13928 | htab = ppc_hash_table (info); | |
13929 | if (htab == NULL) | |
13930 | return FALSE; | |
13931 | ||
13932 | for (ent = h->plt.plist; ent != NULL; ent = ent->next) | |
13933 | if (ent->plt.offset != (bfd_vma) -1) | |
13934 | { | |
13935 | /* This symbol has an entry in the procedure linkage | |
13936 | table. Set it up. */ | |
13937 | Elf_Internal_Rela rela; | |
2d7ad24e | 13938 | asection *plt, *relplt; |
49c09209 AM |
13939 | bfd_byte *loc; |
13940 | ||
13941 | if (!htab->elf.dynamic_sections_created | |
13942 | || h->dynindx == -1) | |
13943 | { | |
13944 | if (!(h->def_regular | |
13945 | && (h->root.type == bfd_link_hash_defined | |
13946 | || h->root.type == bfd_link_hash_defweak))) | |
13947 | continue; | |
2d7ad24e AM |
13948 | if (h->type == STT_GNU_IFUNC) |
13949 | { | |
13950 | plt = htab->elf.iplt; | |
13951 | relplt = htab->elf.irelplt; | |
cebd6b8a | 13952 | htab->elf.ifunc_resolvers = TRUE; |
2d7ad24e AM |
13953 | if (htab->opd_abi) |
13954 | rela.r_info = ELF64_R_INFO (0, R_PPC64_JMP_IREL); | |
13955 | else | |
13956 | rela.r_info = ELF64_R_INFO (0, R_PPC64_IRELATIVE); | |
13957 | } | |
49c09209 | 13958 | else |
2d7ad24e AM |
13959 | { |
13960 | plt = htab->pltlocal; | |
13961 | if (bfd_link_pic (info)) | |
13962 | { | |
13963 | relplt = htab->relpltlocal; | |
13964 | if (htab->opd_abi) | |
13965 | rela.r_info = ELF64_R_INFO (0, R_PPC64_JMP_SLOT); | |
13966 | else | |
13967 | rela.r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE); | |
13968 | } | |
13969 | else | |
13970 | relplt = NULL; | |
13971 | } | |
ed7007c1 | 13972 | rela.r_addend = defined_sym_val (h) + ent->addend; |
2d7ad24e AM |
13973 | |
13974 | if (relplt == NULL) | |
13975 | { | |
13976 | loc = plt->contents + ent->plt.offset; | |
13977 | bfd_put_64 (info->output_bfd, rela.r_addend, loc); | |
13978 | if (htab->opd_abi) | |
13979 | { | |
13980 | bfd_vma toc = elf_gp (info->output_bfd); | |
13981 | toc += htab->sec_info[h->root.u.def.section->id].toc_off; | |
13982 | bfd_put_64 (info->output_bfd, toc, loc + 8); | |
13983 | } | |
13984 | } | |
13985 | else | |
13986 | { | |
13987 | rela.r_offset = (plt->output_section->vma | |
13988 | + plt->output_offset | |
13989 | + ent->plt.offset); | |
13990 | loc = relplt->contents + (relplt->reloc_count++ | |
13991 | * sizeof (Elf64_External_Rela)); | |
13992 | bfd_elf64_swap_reloca_out (info->output_bfd, &rela, loc); | |
13993 | } | |
49c09209 AM |
13994 | } |
13995 | else | |
13996 | { | |
13997 | rela.r_offset = (htab->elf.splt->output_section->vma | |
13998 | + htab->elf.splt->output_offset | |
13999 | + ent->plt.offset); | |
14000 | rela.r_info = ELF64_R_INFO (h->dynindx, R_PPC64_JMP_SLOT); | |
14001 | rela.r_addend = ent->addend; | |
14002 | loc = (htab->elf.srelplt->contents | |
14003 | + ((ent->plt.offset - PLT_INITIAL_ENTRY_SIZE (htab)) | |
14004 | / PLT_ENTRY_SIZE (htab) * sizeof (Elf64_External_Rela))); | |
14005 | if (h->type == STT_GNU_IFUNC && is_static_defined (h)) | |
cebd6b8a | 14006 | htab->elf.ifunc_resolvers = TRUE; |
2d7ad24e | 14007 | bfd_elf64_swap_reloca_out (info->output_bfd, &rela, loc); |
49c09209 | 14008 | } |
49c09209 AM |
14009 | } |
14010 | ||
a345bc8d AM |
14011 | if (!h->pointer_equality_needed) |
14012 | return TRUE; | |
14013 | ||
14014 | if (h->def_regular) | |
14015 | return TRUE; | |
14016 | ||
9e390558 | 14017 | s = htab->global_entry; |
49c09209 AM |
14018 | if (s == NULL || s->size == 0) |
14019 | return TRUE; | |
14020 | ||
14021 | for (ent = h->plt.plist; ent != NULL; ent = ent->next) | |
14022 | if (ent->plt.offset != (bfd_vma) -1 | |
14023 | && ent->addend == 0) | |
a345bc8d AM |
14024 | { |
14025 | bfd_byte *p; | |
14026 | asection *plt; | |
14027 | bfd_vma off; | |
14028 | ||
a345bc8d | 14029 | p = s->contents + h->root.u.def.value; |
33e44f2e | 14030 | plt = htab->elf.splt; |
a345bc8d AM |
14031 | if (!htab->elf.dynamic_sections_created |
14032 | || h->dynindx == -1) | |
2d7ad24e AM |
14033 | { |
14034 | if (h->type == STT_GNU_IFUNC) | |
14035 | plt = htab->elf.iplt; | |
14036 | else | |
14037 | plt = htab->pltlocal; | |
14038 | } | |
49c09209 | 14039 | off = ent->plt.offset + plt->output_offset + plt->output_section->vma; |
a345bc8d AM |
14040 | off -= h->root.u.def.value + s->output_offset + s->output_section->vma; |
14041 | ||
14042 | if (off + 0x80008000 > 0xffffffff || (off & 3) != 0) | |
14043 | { | |
14044 | info->callbacks->einfo | |
c1c8c1ef | 14045 | (_("%P: linkage table error against `%pT'\n"), |
a345bc8d AM |
14046 | h->root.root.string); |
14047 | bfd_set_error (bfd_error_bad_value); | |
14048 | htab->stub_error = TRUE; | |
14049 | } | |
14050 | ||
7341d5e2 AM |
14051 | htab->stub_count[ppc_stub_global_entry - 1] += 1; |
14052 | if (htab->params->emit_stub_syms) | |
14053 | { | |
14054 | size_t len = strlen (h->root.root.string); | |
14055 | char *name = bfd_malloc (sizeof "12345678.global_entry." + len); | |
14056 | ||
14057 | if (name == NULL) | |
14058 | return FALSE; | |
14059 | ||
14060 | sprintf (name, "%08x.global_entry.%s", s->id, h->root.root.string); | |
14061 | h = elf_link_hash_lookup (&htab->elf, name, TRUE, FALSE, FALSE); | |
14062 | if (h == NULL) | |
14063 | return FALSE; | |
14064 | if (h->root.type == bfd_link_hash_new) | |
14065 | { | |
14066 | h->root.type = bfd_link_hash_defined; | |
14067 | h->root.u.def.section = s; | |
14068 | h->root.u.def.value = p - s->contents; | |
14069 | h->ref_regular = 1; | |
14070 | h->def_regular = 1; | |
14071 | h->ref_regular_nonweak = 1; | |
14072 | h->forced_local = 1; | |
14073 | h->non_elf = 0; | |
2ec55de3 | 14074 | h->root.linker_def = 1; |
7341d5e2 AM |
14075 | } |
14076 | } | |
14077 | ||
a345bc8d AM |
14078 | if (PPC_HA (off) != 0) |
14079 | { | |
14080 | bfd_put_32 (s->owner, ADDIS_R12_R12 | PPC_HA (off), p); | |
14081 | p += 4; | |
14082 | } | |
14083 | bfd_put_32 (s->owner, LD_R12_0R12 | PPC_LO (off), p); | |
14084 | p += 4; | |
14085 | bfd_put_32 (s->owner, MTCTR_R12, p); | |
14086 | p += 4; | |
407aa07c | 14087 | bfd_put_32 (s->owner, BCTR, p); |
a345bc8d AM |
14088 | break; |
14089 | } | |
14090 | return TRUE; | |
14091 | } | |
14092 | ||
49c09209 AM |
14093 | /* Write PLT relocs for locals. */ |
14094 | ||
14095 | static bfd_boolean | |
14096 | write_plt_relocs_for_local_syms (struct bfd_link_info *info) | |
14097 | { | |
14098 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
14099 | bfd *ibfd; | |
14100 | ||
14101 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next) | |
14102 | { | |
14103 | struct got_entry **lgot_ents, **end_lgot_ents; | |
14104 | struct plt_entry **local_plt, **lplt, **end_local_plt; | |
14105 | Elf_Internal_Shdr *symtab_hdr; | |
14106 | bfd_size_type locsymcount; | |
14107 | Elf_Internal_Sym *local_syms = NULL; | |
14108 | struct plt_entry *ent; | |
14109 | ||
14110 | if (!is_ppc64_elf (ibfd)) | |
14111 | continue; | |
14112 | ||
14113 | lgot_ents = elf_local_got_ents (ibfd); | |
14114 | if (!lgot_ents) | |
14115 | continue; | |
14116 | ||
14117 | symtab_hdr = &elf_symtab_hdr (ibfd); | |
14118 | locsymcount = symtab_hdr->sh_info; | |
14119 | end_lgot_ents = lgot_ents + locsymcount; | |
14120 | local_plt = (struct plt_entry **) end_lgot_ents; | |
14121 | end_local_plt = local_plt + locsymcount; | |
14122 | for (lplt = local_plt; lplt < end_local_plt; ++lplt) | |
14123 | for (ent = *lplt; ent != NULL; ent = ent->next) | |
14124 | if (ent->plt.offset != (bfd_vma) -1) | |
14125 | { | |
14126 | Elf_Internal_Sym *sym; | |
14127 | asection *sym_sec; | |
14128 | asection *plt, *relplt; | |
14129 | bfd_byte *loc; | |
14130 | bfd_vma val; | |
49c09209 AM |
14131 | |
14132 | if (!get_sym_h (NULL, &sym, &sym_sec, NULL, &local_syms, | |
14133 | lplt - local_plt, ibfd)) | |
14134 | { | |
c9594989 | 14135 | if (symtab_hdr->contents != (unsigned char *) local_syms) |
49c09209 AM |
14136 | free (local_syms); |
14137 | return FALSE; | |
14138 | } | |
14139 | ||
14140 | val = sym->st_value + ent->addend; | |
ba85c15d AM |
14141 | if (ELF_ST_TYPE (sym->st_info) != STT_GNU_IFUNC) |
14142 | val += PPC64_LOCAL_ENTRY_OFFSET (sym->st_other); | |
49c09209 AM |
14143 | if (sym_sec != NULL && sym_sec->output_section != NULL) |
14144 | val += sym_sec->output_offset + sym_sec->output_section->vma; | |
14145 | ||
2d7ad24e AM |
14146 | if (ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC) |
14147 | { | |
cebd6b8a | 14148 | htab->elf.ifunc_resolvers = TRUE; |
2d7ad24e AM |
14149 | plt = htab->elf.iplt; |
14150 | relplt = htab->elf.irelplt; | |
14151 | } | |
14152 | else | |
14153 | { | |
14154 | plt = htab->pltlocal; | |
14155 | relplt = bfd_link_pic (info) ? htab->relpltlocal : NULL; | |
14156 | } | |
49c09209 | 14157 | |
2d7ad24e AM |
14158 | if (relplt == NULL) |
14159 | { | |
14160 | loc = plt->contents + ent->plt.offset; | |
14161 | bfd_put_64 (info->output_bfd, val, loc); | |
14162 | if (htab->opd_abi) | |
14163 | { | |
14164 | bfd_vma toc = elf_gp (ibfd); | |
14165 | bfd_put_64 (info->output_bfd, toc, loc + 8); | |
14166 | } | |
14167 | } | |
49c09209 | 14168 | else |
2d7ad24e AM |
14169 | { |
14170 | Elf_Internal_Rela rela; | |
14171 | rela.r_offset = (ent->plt.offset | |
14172 | + plt->output_offset | |
14173 | + plt->output_section->vma); | |
14174 | if (ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC) | |
14175 | { | |
14176 | if (htab->opd_abi) | |
14177 | rela.r_info = ELF64_R_INFO (0, R_PPC64_JMP_IREL); | |
14178 | else | |
14179 | rela.r_info = ELF64_R_INFO (0, R_PPC64_IRELATIVE); | |
14180 | } | |
14181 | else | |
14182 | { | |
14183 | if (htab->opd_abi) | |
14184 | rela.r_info = ELF64_R_INFO (0, R_PPC64_JMP_SLOT); | |
14185 | else | |
14186 | rela.r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE); | |
14187 | } | |
14188 | rela.r_addend = val; | |
14189 | loc = relplt->contents + (relplt->reloc_count++ | |
14190 | * sizeof (Elf64_External_Rela)); | |
14191 | bfd_elf64_swap_reloca_out (info->output_bfd, &rela, loc); | |
14192 | } | |
49c09209 AM |
14193 | } |
14194 | ||
14195 | if (local_syms != NULL | |
14196 | && symtab_hdr->contents != (unsigned char *) local_syms) | |
14197 | { | |
14198 | if (!info->keep_memory) | |
14199 | free (local_syms); | |
14200 | else | |
14201 | symtab_hdr->contents = (unsigned char *) local_syms; | |
14202 | } | |
14203 | } | |
14204 | return TRUE; | |
14205 | } | |
14206 | ||
a804e476 AM |
14207 | /* Emit the static wrapper function preserving registers around a |
14208 | __tls_get_addr_opt call. */ | |
14209 | ||
14210 | static bfd_boolean | |
14211 | emit_tga_desc (struct ppc_link_hash_table *htab) | |
14212 | { | |
14213 | asection *stub_sec = htab->tga_group->stub_sec; | |
14214 | unsigned int cfa_updt = 11 * 4; | |
14215 | bfd_byte *p; | |
14216 | bfd_vma to, from, delta; | |
14217 | ||
14218 | BFD_ASSERT (htab->tga_desc_fd->elf.root.type == bfd_link_hash_defined | |
14219 | && htab->tga_desc_fd->elf.root.u.def.section == stub_sec | |
14220 | && htab->tga_desc_fd->elf.root.u.def.value == 0); | |
14221 | to = defined_sym_val (&htab->tls_get_addr_fd->elf); | |
14222 | from = defined_sym_val (&htab->tga_desc_fd->elf) + cfa_updt; | |
14223 | delta = to - from; | |
14224 | if (delta + (1 << 25) >= 1 << 26) | |
14225 | { | |
14226 | _bfd_error_handler (_("__tls_get_addr call offset overflow")); | |
14227 | htab->stub_error = TRUE; | |
14228 | return FALSE; | |
14229 | } | |
14230 | ||
14231 | p = stub_sec->contents; | |
14232 | p = tls_get_addr_prologue (htab->elf.dynobj, p, htab); | |
14233 | bfd_put_32 (stub_sec->owner, B_DOT | 1 | (delta & 0x3fffffc), p); | |
14234 | p += 4; | |
14235 | p = tls_get_addr_epilogue (htab->elf.dynobj, p, htab); | |
14236 | return stub_sec->size == (bfd_size_type) (p - stub_sec->contents); | |
14237 | } | |
14238 | ||
14239 | /* Emit eh_frame describing the static wrapper function. */ | |
14240 | ||
14241 | static bfd_byte * | |
14242 | emit_tga_desc_eh_frame (struct ppc_link_hash_table *htab, bfd_byte *p) | |
14243 | { | |
14244 | unsigned int cfa_updt = 11 * 4; | |
14245 | unsigned int i; | |
14246 | ||
14247 | *p++ = DW_CFA_advance_loc + cfa_updt / 4; | |
14248 | *p++ = DW_CFA_def_cfa_offset; | |
14249 | if (htab->opd_abi) | |
14250 | { | |
14251 | *p++ = 128; | |
14252 | *p++ = 1; | |
14253 | } | |
14254 | else | |
14255 | *p++ = 96; | |
14256 | *p++ = DW_CFA_offset_extended_sf; | |
14257 | *p++ = 65; | |
14258 | *p++ = (-16 / 8) & 0x7f; | |
14259 | for (i = 4; i < 12; i++) | |
14260 | { | |
14261 | *p++ = DW_CFA_offset + i; | |
14262 | *p++ = (htab->opd_abi ? 13 : 12) - i; | |
14263 | } | |
14264 | *p++ = DW_CFA_advance_loc + 10; | |
14265 | *p++ = DW_CFA_def_cfa_offset; | |
14266 | *p++ = 0; | |
14267 | for (i = 4; i < 12; i++) | |
14268 | *p++ = DW_CFA_restore + i; | |
14269 | *p++ = DW_CFA_advance_loc + 2; | |
14270 | *p++ = DW_CFA_restore_extended; | |
14271 | *p++ = 65; | |
14272 | return p; | |
14273 | } | |
14274 | ||
721956f4 AM |
14275 | /* Build all the stubs associated with the current output file. |
14276 | The stubs are kept in a hash table attached to the main linker | |
14277 | hash table. This function is called via gldelf64ppc_finish. */ | |
14278 | ||
b34976b6 | 14279 | bfd_boolean |
e7d1c40c | 14280 | ppc64_elf_build_stubs (struct bfd_link_info *info, |
4ce794b7 | 14281 | char **stats) |
5d1634d7 AM |
14282 | { |
14283 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
a4b6fadd | 14284 | struct map_stub *group; |
721956f4 | 14285 | asection *stub_sec; |
5d1634d7 | 14286 | bfd_byte *p; |
e717da7e | 14287 | int stub_sec_count = 0; |
5d1634d7 | 14288 | |
4dfe6ac6 NC |
14289 | if (htab == NULL) |
14290 | return FALSE; | |
14291 | ||
eea6121a | 14292 | /* Allocate memory to hold the linker stubs. */ |
d4aaa2a0 | 14293 | for (group = htab->group; group != NULL; group = group->next) |
df136d64 AM |
14294 | { |
14295 | group->eh_size = 0; | |
14296 | group->lr_restore = 0; | |
14297 | if ((stub_sec = group->stub_sec) != NULL | |
14298 | && stub_sec->size != 0) | |
14299 | { | |
14300 | stub_sec->contents = bfd_zalloc (htab->params->stub_bfd, | |
14301 | stub_sec->size); | |
14302 | if (stub_sec->contents == NULL) | |
14303 | return FALSE; | |
14304 | stub_sec->size = 0; | |
14305 | } | |
14306 | } | |
5d1634d7 | 14307 | |
23eb7e01 | 14308 | if (htab->glink != NULL && htab->glink->size != 0) |
5d1634d7 | 14309 | { |
9f951329 | 14310 | unsigned int indx; |
ad8e1ba5 | 14311 | bfd_vma plt0; |
9f951329 | 14312 | |
721956f4 | 14313 | /* Build the .glink plt call stub. */ |
e7d1c40c | 14314 | if (htab->params->emit_stub_syms) |
97b639ba AM |
14315 | { |
14316 | struct elf_link_hash_entry *h; | |
468392fb AM |
14317 | h = elf_link_hash_lookup (&htab->elf, "__glink_PLTresolve", |
14318 | TRUE, FALSE, FALSE); | |
97b639ba AM |
14319 | if (h == NULL) |
14320 | return FALSE; | |
14321 | if (h->root.type == bfd_link_hash_new) | |
14322 | { | |
14323 | h->root.type = bfd_link_hash_defined; | |
14324 | h->root.u.def.section = htab->glink; | |
ee4bf8d2 | 14325 | h->root.u.def.value = 8; |
f5385ebf AM |
14326 | h->ref_regular = 1; |
14327 | h->def_regular = 1; | |
14328 | h->ref_regular_nonweak = 1; | |
14329 | h->forced_local = 1; | |
14330 | h->non_elf = 0; | |
2ec55de3 | 14331 | h->root.linker_def = 1; |
97b639ba AM |
14332 | } |
14333 | } | |
33e44f2e AM |
14334 | plt0 = (htab->elf.splt->output_section->vma |
14335 | + htab->elf.splt->output_offset | |
14336 | - 16); | |
176a0d42 AM |
14337 | if (info->emitrelocations) |
14338 | { | |
14339 | Elf_Internal_Rela *r = get_relocs (htab->glink, 1); | |
14340 | if (r == NULL) | |
14341 | return FALSE; | |
14342 | r->r_offset = (htab->glink->output_offset | |
14343 | + htab->glink->output_section->vma); | |
14344 | r->r_info = ELF64_R_INFO (0, R_PPC64_REL64); | |
14345 | r->r_addend = plt0; | |
14346 | } | |
4ce794b7 | 14347 | p = htab->glink->contents; |
176a0d42 | 14348 | plt0 -= htab->glink->output_section->vma + htab->glink->output_offset; |
ee4bf8d2 AM |
14349 | bfd_put_64 (htab->glink->owner, plt0, p); |
14350 | p += 8; | |
b9e5796b AM |
14351 | if (htab->opd_abi) |
14352 | { | |
14353 | bfd_put_32 (htab->glink->owner, MFLR_R12, p); | |
14354 | p += 4; | |
14355 | bfd_put_32 (htab->glink->owner, BCL_20_31, p); | |
14356 | p += 4; | |
14357 | bfd_put_32 (htab->glink->owner, MFLR_R11, p); | |
14358 | p += 4; | |
14359 | bfd_put_32 (htab->glink->owner, LD_R2_0R11 | (-16 & 0xfffc), p); | |
14360 | p += 4; | |
14361 | bfd_put_32 (htab->glink->owner, MTLR_R12, p); | |
14362 | p += 4; | |
14363 | bfd_put_32 (htab->glink->owner, ADD_R11_R2_R11, p); | |
14364 | p += 4; | |
14365 | bfd_put_32 (htab->glink->owner, LD_R12_0R11, p); | |
14366 | p += 4; | |
14367 | bfd_put_32 (htab->glink->owner, LD_R2_0R11 | 8, p); | |
14368 | p += 4; | |
14369 | bfd_put_32 (htab->glink->owner, MTCTR_R12, p); | |
14370 | p += 4; | |
14371 | bfd_put_32 (htab->glink->owner, LD_R11_0R11 | 16, p); | |
14372 | p += 4; | |
14373 | } | |
14374 | else | |
14375 | { | |
14376 | bfd_put_32 (htab->glink->owner, MFLR_R0, p); | |
14377 | p += 4; | |
14378 | bfd_put_32 (htab->glink->owner, BCL_20_31, p); | |
14379 | p += 4; | |
14380 | bfd_put_32 (htab->glink->owner, MFLR_R11, p); | |
14381 | p += 4; | |
f378ab09 AM |
14382 | bfd_put_32 (htab->glink->owner, STD_R2_0R1 + 24, p); |
14383 | p += 4; | |
b9e5796b AM |
14384 | bfd_put_32 (htab->glink->owner, LD_R2_0R11 | (-16 & 0xfffc), p); |
14385 | p += 4; | |
14386 | bfd_put_32 (htab->glink->owner, MTLR_R0, p); | |
14387 | p += 4; | |
14388 | bfd_put_32 (htab->glink->owner, SUB_R12_R12_R11, p); | |
14389 | p += 4; | |
14390 | bfd_put_32 (htab->glink->owner, ADD_R11_R2_R11, p); | |
14391 | p += 4; | |
14392 | bfd_put_32 (htab->glink->owner, ADDI_R0_R12 | (-48 & 0xffff), p); | |
14393 | p += 4; | |
14394 | bfd_put_32 (htab->glink->owner, LD_R12_0R11, p); | |
14395 | p += 4; | |
14396 | bfd_put_32 (htab->glink->owner, SRDI_R0_R0_2, p); | |
14397 | p += 4; | |
14398 | bfd_put_32 (htab->glink->owner, MTCTR_R12, p); | |
14399 | p += 4; | |
14400 | bfd_put_32 (htab->glink->owner, LD_R11_0R11 | 8, p); | |
14401 | p += 4; | |
14402 | } | |
407aa07c AM |
14403 | bfd_put_32 (htab->glink->owner, BCTR, p); |
14404 | p += 4; | |
c75bc4f7 | 14405 | BFD_ASSERT (p == htab->glink->contents + GLINK_PLTRESOLVE_SIZE (htab)); |
ad8e1ba5 | 14406 | |
9f951329 AM |
14407 | /* Build the .glink lazy link call stubs. */ |
14408 | indx = 0; | |
9e390558 | 14409 | while (p < htab->glink->contents + htab->glink->size) |
9f951329 | 14410 | { |
b9e5796b | 14411 | if (htab->opd_abi) |
9f951329 | 14412 | { |
b9e5796b AM |
14413 | if (indx < 0x8000) |
14414 | { | |
14415 | bfd_put_32 (htab->glink->owner, LI_R0_0 | indx, p); | |
14416 | p += 4; | |
14417 | } | |
14418 | else | |
14419 | { | |
14420 | bfd_put_32 (htab->glink->owner, LIS_R0_0 | PPC_HI (indx), p); | |
14421 | p += 4; | |
14422 | bfd_put_32 (htab->glink->owner, ORI_R0_R0_0 | PPC_LO (indx), | |
14423 | p); | |
14424 | p += 4; | |
14425 | } | |
9f951329 | 14426 | } |
4ce794b7 | 14427 | bfd_put_32 (htab->glink->owner, |
ee4bf8d2 | 14428 | B_DOT | ((htab->glink->contents - p + 8) & 0x3fffffc), p); |
a16d5acb | 14429 | indx++; |
9f951329 AM |
14430 | p += 4; |
14431 | } | |
5d1634d7 | 14432 | } |
5d1634d7 | 14433 | |
a804e476 AM |
14434 | if (htab->tga_group != NULL) |
14435 | { | |
14436 | htab->tga_group->lr_restore = 23 * 4; | |
14437 | htab->tga_group->stub_sec->size = 24 * 4; | |
14438 | if (!emit_tga_desc (htab)) | |
14439 | return FALSE; | |
14440 | if (htab->glink_eh_frame != NULL | |
14441 | && htab->glink_eh_frame->size != 0) | |
14442 | { | |
14443 | size_t align = 4; | |
14444 | ||
14445 | p = htab->glink_eh_frame->contents; | |
14446 | p += (sizeof (glink_eh_frame_cie) + align - 1) & -align; | |
14447 | p += 17; | |
14448 | htab->tga_group->eh_size = emit_tga_desc_eh_frame (htab, p) - p; | |
14449 | } | |
14450 | } | |
14451 | ||
49c09209 AM |
14452 | /* Build .glink global entry stubs, and PLT relocs for globals. */ |
14453 | elf_link_hash_traverse (&htab->elf, build_global_entry_stubs_and_plt, info); | |
14454 | ||
14455 | if (!write_plt_relocs_for_local_syms (info)) | |
14456 | return FALSE; | |
9e390558 | 14457 | |
7341d5e2 | 14458 | if (htab->brlt != NULL && htab->brlt->size != 0) |
721956f4 | 14459 | { |
4ce794b7 | 14460 | htab->brlt->contents = bfd_zalloc (htab->brlt->owner, |
eea6121a | 14461 | htab->brlt->size); |
4ce794b7 | 14462 | if (htab->brlt->contents == NULL) |
b34976b6 | 14463 | return FALSE; |
721956f4 | 14464 | } |
ee75fd95 | 14465 | if (htab->relbrlt != NULL && htab->relbrlt->size != 0) |
63bc6f6c AM |
14466 | { |
14467 | htab->relbrlt->contents = bfd_zalloc (htab->relbrlt->owner, | |
eea6121a | 14468 | htab->relbrlt->size); |
63bc6f6c AM |
14469 | if (htab->relbrlt->contents == NULL) |
14470 | return FALSE; | |
14471 | } | |
5d1634d7 | 14472 | |
721956f4 AM |
14473 | /* Build the stubs as directed by the stub hash table. */ |
14474 | bfd_hash_traverse (&htab->stub_hash_table, ppc_build_one_stub, info); | |
5d1634d7 | 14475 | |
a4b6fadd AM |
14476 | for (group = htab->group; group != NULL; group = group->next) |
14477 | if (group->needs_save_res) | |
7dda8d3c | 14478 | group->stub_sec->size += htab->sfpr->size; |
a4b6fadd | 14479 | |
aa8a7074 AM |
14480 | if (htab->relbrlt != NULL) |
14481 | htab->relbrlt->reloc_count = 0; | |
14482 | ||
e7d1c40c | 14483 | if (htab->params->plt_stub_align != 0) |
d4aaa2a0 AM |
14484 | for (group = htab->group; group != NULL; group = group->next) |
14485 | if ((stub_sec = group->stub_sec) != NULL) | |
691d2e9a AM |
14486 | { |
14487 | int align = abs (htab->params->plt_stub_align); | |
14488 | stub_sec->size = (stub_sec->size + (1 << align) - 1) & -(1 << align); | |
14489 | } | |
794e51c0 | 14490 | |
7dda8d3c AM |
14491 | for (group = htab->group; group != NULL; group = group->next) |
14492 | if (group->needs_save_res) | |
14493 | { | |
14494 | stub_sec = group->stub_sec; | |
14495 | memcpy (stub_sec->contents + stub_sec->size - htab->sfpr->size, | |
14496 | htab->sfpr->contents, htab->sfpr->size); | |
14497 | if (htab->params->emit_stub_syms) | |
14498 | { | |
14499 | unsigned int i; | |
14500 | ||
14501 | for (i = 0; i < ARRAY_SIZE (save_res_funcs); i++) | |
14502 | if (!sfpr_define (info, &save_res_funcs[i], stub_sec)) | |
14503 | return FALSE; | |
14504 | } | |
14505 | } | |
14506 | ||
df136d64 AM |
14507 | if (htab->glink_eh_frame != NULL |
14508 | && htab->glink_eh_frame->size != 0) | |
14509 | { | |
14510 | bfd_vma val; | |
14511 | size_t align = 4; | |
14512 | ||
14513 | p = htab->glink_eh_frame->contents; | |
14514 | p += (sizeof (glink_eh_frame_cie) + align - 1) & -align; | |
14515 | ||
14516 | for (group = htab->group; group != NULL; group = group->next) | |
14517 | if (group->eh_size != 0) | |
14518 | { | |
14519 | /* Offset to stub section. */ | |
14520 | val = (group->stub_sec->output_section->vma | |
14521 | + group->stub_sec->output_offset); | |
14522 | val -= (htab->glink_eh_frame->output_section->vma | |
14523 | + htab->glink_eh_frame->output_offset | |
14524 | + (p + 8 - htab->glink_eh_frame->contents)); | |
14525 | if (val + 0x80000000 > 0xffffffff) | |
14526 | { | |
14527 | _bfd_error_handler | |
14528 | (_("%s offset too large for .eh_frame sdata4 encoding"), | |
14529 | group->stub_sec->name); | |
14530 | return FALSE; | |
14531 | } | |
14532 | bfd_put_32 (htab->elf.dynobj, val, p + 8); | |
14533 | p += (group->eh_size + 17 + 3) & -4; | |
14534 | } | |
14535 | if (htab->glink != NULL && htab->glink->size != 0) | |
14536 | { | |
14537 | /* Offset to .glink. */ | |
14538 | val = (htab->glink->output_section->vma | |
14539 | + htab->glink->output_offset | |
14540 | + 8); | |
14541 | val -= (htab->glink_eh_frame->output_section->vma | |
14542 | + htab->glink_eh_frame->output_offset | |
14543 | + (p + 8 - htab->glink_eh_frame->contents)); | |
14544 | if (val + 0x80000000 > 0xffffffff) | |
14545 | { | |
14546 | _bfd_error_handler | |
14547 | (_("%s offset too large for .eh_frame sdata4 encoding"), | |
14548 | htab->glink->name); | |
14549 | return FALSE; | |
14550 | } | |
14551 | bfd_put_32 (htab->elf.dynobj, val, p + 8); | |
14552 | p += (24 + align - 1) & -align; | |
14553 | } | |
14554 | } | |
14555 | ||
d4aaa2a0 AM |
14556 | for (group = htab->group; group != NULL; group = group->next) |
14557 | if ((stub_sec = group->stub_sec) != NULL) | |
e717da7e AM |
14558 | { |
14559 | stub_sec_count += 1; | |
c9301e31 AM |
14560 | if (stub_sec->rawsize != stub_sec->size |
14561 | && (htab->stub_iteration <= STUB_SHRINK_ITER | |
14562 | || stub_sec->rawsize < stub_sec->size)) | |
e717da7e AM |
14563 | break; |
14564 | } | |
5d1634d7 | 14565 | |
25516cc5 | 14566 | if (group != NULL) |
5d1634d7 | 14567 | { |
b34976b6 | 14568 | htab->stub_error = TRUE; |
cf97bcb0 | 14569 | _bfd_error_handler (_("stubs don't match calculated size")); |
5d1634d7 | 14570 | } |
721956f4 | 14571 | |
d2a300cf AM |
14572 | if (htab->stub_error) |
14573 | return FALSE; | |
14574 | ||
14575 | if (stats != NULL) | |
14576 | { | |
988b7300 AM |
14577 | char *groupmsg; |
14578 | if (asprintf (&groupmsg, | |
14579 | ngettext ("linker stubs in %u group\n", | |
14580 | "linker stubs in %u groups\n", | |
14581 | stub_sec_count), | |
14582 | stub_sec_count) < 0) | |
14583 | *stats = NULL; | |
14584 | else | |
14585 | { | |
14586 | if (asprintf (stats, _("%s" | |
14587 | " branch %lu\n" | |
14588 | " branch toc adj %lu\n" | |
14589 | " branch notoc %lu\n" | |
14590 | " branch both %lu\n" | |
14591 | " long branch %lu\n" | |
14592 | " long toc adj %lu\n" | |
14593 | " long notoc %lu\n" | |
14594 | " long both %lu\n" | |
14595 | " plt call %lu\n" | |
14596 | " plt call save %lu\n" | |
14597 | " plt call notoc %lu\n" | |
14598 | " plt call both %lu\n" | |
14599 | " global entry %lu"), | |
14600 | groupmsg, | |
14601 | htab->stub_count[ppc_stub_long_branch - 1], | |
14602 | htab->stub_count[ppc_stub_long_branch_r2off - 1], | |
14603 | htab->stub_count[ppc_stub_long_branch_notoc - 1], | |
14604 | htab->stub_count[ppc_stub_long_branch_both - 1], | |
14605 | htab->stub_count[ppc_stub_plt_branch - 1], | |
14606 | htab->stub_count[ppc_stub_plt_branch_r2off - 1], | |
14607 | htab->stub_count[ppc_stub_plt_branch_notoc - 1], | |
14608 | htab->stub_count[ppc_stub_plt_branch_both - 1], | |
14609 | htab->stub_count[ppc_stub_plt_call - 1], | |
14610 | htab->stub_count[ppc_stub_plt_call_r2save - 1], | |
14611 | htab->stub_count[ppc_stub_plt_call_notoc - 1], | |
14612 | htab->stub_count[ppc_stub_plt_call_both - 1], | |
14613 | htab->stub_count[ppc_stub_global_entry - 1]) < 0) | |
14614 | *stats = NULL; | |
14615 | free (groupmsg); | |
14616 | } | |
d2a300cf AM |
14617 | } |
14618 | return TRUE; | |
5bd4f169 AM |
14619 | } |
14620 | ||
60124e18 AM |
14621 | /* What to do when ld finds relocations against symbols defined in |
14622 | discarded sections. */ | |
14623 | ||
14624 | static unsigned int | |
14625 | ppc64_elf_action_discarded (asection *sec) | |
14626 | { | |
14627 | if (strcmp (".opd", sec->name) == 0) | |
14628 | return 0; | |
14629 | ||
14630 | if (strcmp (".toc", sec->name) == 0) | |
14631 | return 0; | |
14632 | ||
bce50a28 JJ |
14633 | if (strcmp (".toc1", sec->name) == 0) |
14634 | return 0; | |
14635 | ||
60124e18 AM |
14636 | return _bfd_elf_default_action_discarded (sec); |
14637 | } | |
14638 | ||
e59a1001 AM |
14639 | /* These are the dynamic relocations supported by glibc. */ |
14640 | ||
14641 | static bfd_boolean | |
14642 | ppc64_glibc_dynamic_reloc (enum elf_ppc64_reloc_type r_type) | |
14643 | { | |
14644 | switch (r_type) | |
14645 | { | |
14646 | case R_PPC64_RELATIVE: | |
14647 | case R_PPC64_NONE: | |
14648 | case R_PPC64_ADDR64: | |
14649 | case R_PPC64_GLOB_DAT: | |
14650 | case R_PPC64_IRELATIVE: | |
14651 | case R_PPC64_JMP_IREL: | |
14652 | case R_PPC64_JMP_SLOT: | |
14653 | case R_PPC64_DTPMOD64: | |
14654 | case R_PPC64_DTPREL64: | |
14655 | case R_PPC64_TPREL64: | |
14656 | case R_PPC64_TPREL16_LO_DS: | |
14657 | case R_PPC64_TPREL16_DS: | |
14658 | case R_PPC64_TPREL16: | |
14659 | case R_PPC64_TPREL16_LO: | |
14660 | case R_PPC64_TPREL16_HI: | |
14661 | case R_PPC64_TPREL16_HIGH: | |
14662 | case R_PPC64_TPREL16_HA: | |
14663 | case R_PPC64_TPREL16_HIGHA: | |
14664 | case R_PPC64_TPREL16_HIGHER: | |
14665 | case R_PPC64_TPREL16_HIGHEST: | |
14666 | case R_PPC64_TPREL16_HIGHERA: | |
14667 | case R_PPC64_TPREL16_HIGHESTA: | |
14668 | case R_PPC64_ADDR16_LO_DS: | |
14669 | case R_PPC64_ADDR16_LO: | |
14670 | case R_PPC64_ADDR16_HI: | |
14671 | case R_PPC64_ADDR16_HIGH: | |
14672 | case R_PPC64_ADDR16_HA: | |
14673 | case R_PPC64_ADDR16_HIGHA: | |
14674 | case R_PPC64_REL30: | |
14675 | case R_PPC64_COPY: | |
14676 | case R_PPC64_UADDR64: | |
14677 | case R_PPC64_UADDR32: | |
14678 | case R_PPC64_ADDR32: | |
14679 | case R_PPC64_ADDR24: | |
14680 | case R_PPC64_ADDR16: | |
14681 | case R_PPC64_UADDR16: | |
14682 | case R_PPC64_ADDR16_DS: | |
14683 | case R_PPC64_ADDR16_HIGHER: | |
14684 | case R_PPC64_ADDR16_HIGHEST: | |
14685 | case R_PPC64_ADDR16_HIGHERA: | |
14686 | case R_PPC64_ADDR16_HIGHESTA: | |
14687 | case R_PPC64_ADDR14: | |
14688 | case R_PPC64_ADDR14_BRTAKEN: | |
14689 | case R_PPC64_ADDR14_BRNTAKEN: | |
14690 | case R_PPC64_REL32: | |
14691 | case R_PPC64_REL64: | |
14692 | return TRUE; | |
14693 | ||
14694 | default: | |
14695 | return FALSE; | |
14696 | } | |
14697 | } | |
14698 | ||
5bd4f169 AM |
14699 | /* The RELOCATE_SECTION function is called by the ELF backend linker |
14700 | to handle the relocations for a section. | |
14701 | ||
14702 | The relocs are always passed as Rela structures; if the section | |
14703 | actually uses Rel structures, the r_addend field will always be | |
14704 | zero. | |
14705 | ||
14706 | This function is responsible for adjust the section contents as | |
14707 | necessary, and (if using Rela relocs and generating a | |
1049f94e | 14708 | relocatable output file) adjusting the reloc addend as |
5bd4f169 AM |
14709 | necessary. |
14710 | ||
14711 | This function does not have to worry about setting the reloc | |
14712 | address or the reloc symbol index. | |
14713 | ||
14714 | LOCAL_SYMS is a pointer to the swapped in local symbols. | |
14715 | ||
14716 | LOCAL_SECTIONS is an array giving the section in the input file | |
14717 | corresponding to the st_shndx field of each local symbol. | |
14718 | ||
14719 | The global hash table entry for the global symbols can be found | |
14720 | via elf_sym_hashes (input_bfd). | |
14721 | ||
1049f94e | 14722 | When generating relocatable output, this function must handle |
5bd4f169 AM |
14723 | STB_LOCAL/STT_SECTION symbols specially. The output symbol is |
14724 | going to be the section symbol corresponding to the output | |
14725 | section, which means that the addend must be adjusted | |
14726 | accordingly. */ | |
14727 | ||
b34976b6 | 14728 | static bfd_boolean |
4ce794b7 AM |
14729 | ppc64_elf_relocate_section (bfd *output_bfd, |
14730 | struct bfd_link_info *info, | |
14731 | bfd *input_bfd, | |
14732 | asection *input_section, | |
14733 | bfd_byte *contents, | |
14734 | Elf_Internal_Rela *relocs, | |
14735 | Elf_Internal_Sym *local_syms, | |
14736 | asection **local_sections) | |
5bd4f169 | 14737 | { |
65f38f15 | 14738 | struct ppc_link_hash_table *htab; |
5bd4f169 AM |
14739 | Elf_Internal_Shdr *symtab_hdr; |
14740 | struct elf_link_hash_entry **sym_hashes; | |
5bd4f169 | 14741 | Elf_Internal_Rela *rel; |
c316a17c | 14742 | Elf_Internal_Rela *wrel; |
5bd4f169 | 14743 | Elf_Internal_Rela *relend; |
411e1bfb AM |
14744 | Elf_Internal_Rela outrel; |
14745 | bfd_byte *loc; | |
411e1bfb | 14746 | struct got_entry **local_got_ents; |
5bd4f169 | 14747 | bfd_vma TOCstart; |
b34976b6 AM |
14748 | bfd_boolean ret = TRUE; |
14749 | bfd_boolean is_opd; | |
794e51c0 AM |
14750 | /* Assume 'at' branch hints. */ |
14751 | bfd_boolean is_isa_v2 = TRUE; | |
e59a1001 | 14752 | bfd_boolean warned_dynamic = FALSE; |
95f0d0d2 | 14753 | bfd_vma d_offset = (bfd_big_endian (input_bfd) ? 2 : 0); |
5bd4f169 | 14754 | |
65f38f15 | 14755 | /* Initialize howto table if needed. */ |
5bd4f169 | 14756 | if (!ppc64_elf_howto_table[R_PPC64_ADDR32]) |
5bd4f169 AM |
14757 | ppc_howto_init (); |
14758 | ||
65f38f15 | 14759 | htab = ppc_hash_table (info); |
4dfe6ac6 NC |
14760 | if (htab == NULL) |
14761 | return FALSE; | |
ee75fd95 AM |
14762 | |
14763 | /* Don't relocate stub sections. */ | |
e7d1c40c | 14764 | if (input_section->owner == htab->params->stub_bfd) |
ee75fd95 AM |
14765 | return TRUE; |
14766 | ||
7af5d5c4 AM |
14767 | if (!is_ppc64_elf (input_bfd)) |
14768 | { | |
14769 | bfd_set_error (bfd_error_wrong_format); | |
14770 | return FALSE; | |
14771 | } | |
0ffa91dd | 14772 | |
411e1bfb | 14773 | local_got_ents = elf_local_got_ents (input_bfd); |
5bd4f169 | 14774 | TOCstart = elf_gp (output_bfd); |
0ffa91dd | 14775 | symtab_hdr = &elf_symtab_hdr (input_bfd); |
5bd4f169 | 14776 | sym_hashes = elf_sym_hashes (input_bfd); |
7c8fe5c4 | 14777 | is_opd = ppc64_elf_section_data (input_section)->sec_type == sec_opd; |
65f38f15 | 14778 | |
c316a17c | 14779 | rel = wrel = relocs; |
5bd4f169 | 14780 | relend = relocs + input_section->reloc_count; |
c316a17c | 14781 | for (; rel < relend; wrel++, rel++) |
5bd4f169 | 14782 | { |
04c9666a | 14783 | enum elf_ppc64_reloc_type r_type; |
31c76678 | 14784 | bfd_vma addend; |
5bd4f169 AM |
14785 | bfd_reloc_status_type r; |
14786 | Elf_Internal_Sym *sym; | |
14787 | asection *sec; | |
039b3fef AM |
14788 | struct elf_link_hash_entry *h_elf; |
14789 | struct ppc_link_hash_entry *h; | |
14790 | struct ppc_link_hash_entry *fdh; | |
5bd4f169 | 14791 | const char *sym_name; |
0d4792f7 | 14792 | unsigned long r_symndx, toc_symndx; |
3a71aa26 | 14793 | bfd_vma toc_addend; |
f961d9dd AM |
14794 | unsigned char tls_mask, tls_gd, tls_type; |
14795 | unsigned char sym_type; | |
5bd4f169 | 14796 | bfd_vma relocation; |
23cedd1d | 14797 | bfd_boolean unresolved_reloc, save_unresolved_reloc; |
b34976b6 | 14798 | bfd_boolean warned; |
bc30df16 | 14799 | enum { DEST_NORMAL, DEST_OPD, DEST_STUB } reloc_dest; |
67f0cbdb | 14800 | unsigned int insn; |
e11840f9 | 14801 | unsigned int mask; |
721956f4 AM |
14802 | struct ppc_stub_hash_entry *stub_entry; |
14803 | bfd_vma max_br_offset; | |
14804 | bfd_vma from; | |
c316a17c | 14805 | Elf_Internal_Rela orig_rel; |
b80eed39 AM |
14806 | reloc_howto_type *howto; |
14807 | struct reloc_howto_struct alt_howto; | |
4a421c53 AM |
14808 | uint64_t pinsn; |
14809 | bfd_vma offset; | |
5bd4f169 | 14810 | |
c316a17c AM |
14811 | again: |
14812 | orig_rel = *rel; | |
14813 | ||
4ce794b7 | 14814 | r_type = ELF64_R_TYPE (rel->r_info); |
5bd4f169 | 14815 | r_symndx = ELF64_R_SYM (rel->r_info); |
ee87f2da AM |
14816 | |
14817 | /* For old style R_PPC64_TOC relocs with a zero symbol, use the | |
14818 | symbol of the previous ADDR64 reloc. The symbol gives us the | |
14819 | proper TOC base to use. */ | |
14820 | if (rel->r_info == ELF64_R_INFO (0, R_PPC64_TOC) | |
c316a17c AM |
14821 | && wrel != relocs |
14822 | && ELF64_R_TYPE (wrel[-1].r_info) == R_PPC64_ADDR64 | |
ee87f2da | 14823 | && is_opd) |
c316a17c | 14824 | r_symndx = ELF64_R_SYM (wrel[-1].r_info); |
ee87f2da | 14825 | |
4ce794b7 AM |
14826 | sym = NULL; |
14827 | sec = NULL; | |
039b3fef | 14828 | h_elf = NULL; |
4ce794b7 | 14829 | sym_name = NULL; |
b34976b6 AM |
14830 | unresolved_reloc = FALSE; |
14831 | warned = FALSE; | |
65f38f15 | 14832 | |
0b13192e | 14833 | if (r_symndx < symtab_hdr->sh_info) |
5bd4f169 AM |
14834 | { |
14835 | /* It's a local symbol. */ | |
74f0fb50 | 14836 | struct _opd_sec_data *opd; |
4025353c | 14837 | |
5bd4f169 AM |
14838 | sym = local_syms + r_symndx; |
14839 | sec = local_sections[r_symndx]; | |
26c61ae5 | 14840 | sym_name = bfd_elf_sym_name (input_bfd, symtab_hdr, sym, sec); |
0d4792f7 | 14841 | sym_type = ELF64_ST_TYPE (sym->st_info); |
8517fae7 | 14842 | relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel); |
74f0fb50 AM |
14843 | opd = get_opd_info (sec); |
14844 | if (opd != NULL && opd->adjust != NULL) | |
1e2f5b6e | 14845 | { |
51aecdc5 AM |
14846 | long adjust = opd->adjust[OPD_NDX (sym->st_value |
14847 | + rel->r_addend)]; | |
4025353c AM |
14848 | if (adjust == -1) |
14849 | relocation = 0; | |
14850 | else | |
4cc603a5 AM |
14851 | { |
14852 | /* If this is a relocation against the opd section sym | |
14853 | and we have edited .opd, adjust the reloc addend so | |
14854 | that ld -r and ld --emit-relocs output is correct. | |
14855 | If it is a reloc against some other .opd symbol, | |
14856 | then the symbol value will be adjusted later. */ | |
14857 | if (ELF_ST_TYPE (sym->st_info) == STT_SECTION) | |
14858 | rel->r_addend += adjust; | |
14859 | else | |
14860 | relocation += adjust; | |
14861 | } | |
1e2f5b6e | 14862 | } |
5bd4f169 AM |
14863 | } |
14864 | else | |
14865 | { | |
62d887d4 L |
14866 | bfd_boolean ignored; |
14867 | ||
b2a8e766 AM |
14868 | RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel, |
14869 | r_symndx, symtab_hdr, sym_hashes, | |
039b3fef | 14870 | h_elf, sec, relocation, |
62d887d4 | 14871 | unresolved_reloc, warned, ignored); |
039b3fef AM |
14872 | sym_name = h_elf->root.root.string; |
14873 | sym_type = h_elf->type; | |
b69fdb4e AM |
14874 | if (sec != NULL |
14875 | && sec->owner == output_bfd | |
14876 | && strcmp (sec->name, ".opd") == 0) | |
14877 | { | |
14878 | /* This is a symbol defined in a linker script. All | |
14879 | such are defined in output sections, even those | |
14880 | defined by simple assignment from a symbol defined in | |
14881 | an input section. Transfer the symbol to an | |
14882 | appropriate input .opd section, so that a branch to | |
14883 | this symbol will be mapped to the location specified | |
14884 | by the opd entry. */ | |
14885 | struct bfd_link_order *lo; | |
14886 | for (lo = sec->map_head.link_order; lo != NULL; lo = lo->next) | |
14887 | if (lo->type == bfd_indirect_link_order) | |
14888 | { | |
14889 | asection *isec = lo->u.indirect.section; | |
14890 | if (h_elf->root.u.def.value >= isec->output_offset | |
14891 | && h_elf->root.u.def.value < (isec->output_offset | |
14892 | + isec->size)) | |
14893 | { | |
14894 | h_elf->root.u.def.value -= isec->output_offset; | |
14895 | h_elf->root.u.def.section = isec; | |
14896 | sec = isec; | |
14897 | break; | |
14898 | } | |
14899 | } | |
14900 | } | |
5bd4f169 | 14901 | } |
ed7007c1 | 14902 | h = ppc_elf_hash_entry (h_elf); |
5bd4f169 | 14903 | |
dbaa2011 | 14904 | if (sec != NULL && discarded_section (sec)) |
c316a17c AM |
14905 | { |
14906 | _bfd_clear_contents (ppc64_elf_howto_table[r_type], | |
14907 | input_bfd, input_section, | |
0930cb30 | 14908 | contents, rel->r_offset); |
c316a17c AM |
14909 | wrel->r_offset = rel->r_offset; |
14910 | wrel->r_info = 0; | |
14911 | wrel->r_addend = 0; | |
14912 | ||
14913 | /* For ld -r, remove relocations in debug sections against | |
dcd2b8a0 | 14914 | symbols defined in discarded sections. Not done for |
c316a17c AM |
14915 | non-debug to preserve relocs in .eh_frame which the |
14916 | eh_frame editing code expects to be present. */ | |
14917 | if (bfd_link_relocatable (info) | |
14918 | && (input_section->flags & SEC_DEBUGGING)) | |
14919 | wrel--; | |
14920 | ||
14921 | continue; | |
14922 | } | |
ab96bf03 | 14923 | |
0e1862bb | 14924 | if (bfd_link_relocatable (info)) |
c316a17c | 14925 | goto copy_reloc; |
ab96bf03 | 14926 | |
f40da81b AM |
14927 | if (h != NULL && &h->elf == htab->elf.hgot) |
14928 | { | |
6f20ed8a | 14929 | relocation = TOCstart + htab->sec_info[input_section->id].toc_off; |
f40da81b AM |
14930 | sec = bfd_abs_section_ptr; |
14931 | unresolved_reloc = FALSE; | |
14932 | } | |
14933 | ||
951fd09b AM |
14934 | /* TLS optimizations. Replace instruction sequences and relocs |
14935 | based on information we collected in tls_optimize. We edit | |
14936 | RELOCS so that --emit-relocs will output something sensible | |
14937 | for the final instruction stream. */ | |
14938 | tls_mask = 0; | |
14939 | tls_gd = 0; | |
0d4792f7 | 14940 | toc_symndx = 0; |
727fc41e AM |
14941 | if (h != NULL) |
14942 | tls_mask = h->tls_mask; | |
14943 | else if (local_got_ents != NULL) | |
411e1bfb | 14944 | { |
e054468f AM |
14945 | struct plt_entry **local_plt = (struct plt_entry **) |
14946 | (local_got_ents + symtab_hdr->sh_info); | |
f961d9dd | 14947 | unsigned char *lgot_masks = (unsigned char *) |
e054468f | 14948 | (local_plt + symtab_hdr->sh_info); |
727fc41e AM |
14949 | tls_mask = lgot_masks[r_symndx]; |
14950 | } | |
37da22e5 | 14951 | if (((tls_mask & TLS_TLS) == 0 || tls_mask == (TLS_TLS | TLS_MARK)) |
727fc41e AM |
14952 | && (r_type == R_PPC64_TLS |
14953 | || r_type == R_PPC64_TLSGD | |
14954 | || r_type == R_PPC64_TLSLD)) | |
14955 | { | |
14956 | /* Check for toc tls entries. */ | |
f961d9dd | 14957 | unsigned char *toc_tls; |
0d4792f7 | 14958 | |
727fc41e AM |
14959 | if (!get_tls_mask (&toc_tls, &toc_symndx, &toc_addend, |
14960 | &local_syms, rel, input_bfd)) | |
14961 | return FALSE; | |
0d4792f7 | 14962 | |
727fc41e AM |
14963 | if (toc_tls) |
14964 | tls_mask = *toc_tls; | |
0d4792f7 AM |
14965 | } |
14966 | ||
14967 | /* Check that tls relocs are used with tls syms, and non-tls | |
14968 | relocs are used with non-tls syms. */ | |
cf35638d | 14969 | if (r_symndx != STN_UNDEF |
0d4792f7 AM |
14970 | && r_type != R_PPC64_NONE |
14971 | && (h == NULL | |
039b3fef AM |
14972 | || h->elf.root.type == bfd_link_hash_defined |
14973 | || h->elf.root.type == bfd_link_hash_defweak) | |
71c4e95a | 14974 | && IS_PPC64_TLS_RELOC (r_type) != (sym_type == STT_TLS)) |
0d4792f7 | 14975 | { |
37da22e5 | 14976 | if ((tls_mask & TLS_TLS) != 0 |
727fc41e AM |
14977 | && (r_type == R_PPC64_TLS |
14978 | || r_type == R_PPC64_TLSGD | |
14979 | || r_type == R_PPC64_TLSLD)) | |
0d4792f7 AM |
14980 | /* R_PPC64_TLS is OK against a symbol in the TOC. */ |
14981 | ; | |
14982 | else | |
25f53a85 | 14983 | info->callbacks->einfo |
1d483afe | 14984 | (!IS_PPC64_TLS_RELOC (r_type) |
695344c0 | 14985 | /* xgettext:c-format */ |
c1c8c1ef | 14986 | ? _("%H: %s used with TLS symbol `%pT'\n") |
695344c0 | 14987 | /* xgettext:c-format */ |
c1c8c1ef | 14988 | : _("%H: %s used with non-TLS symbol `%pT'\n"), |
25f53a85 | 14989 | input_bfd, input_section, rel->r_offset, |
0d4792f7 AM |
14990 | ppc64_elf_howto_table[r_type]->name, |
14991 | sym_name); | |
411e1bfb AM |
14992 | } |
14993 | ||
14994 | /* Ensure reloc mapping code below stays sane. */ | |
14995 | if (R_PPC64_TOC16_LO_DS != R_PPC64_TOC16_DS + 1 | |
14996 | || R_PPC64_TOC16_LO != R_PPC64_TOC16 + 1 | |
14997 | || (R_PPC64_GOT_TLSLD16 & 3) != (R_PPC64_GOT_TLSGD16 & 3) | |
14998 | || (R_PPC64_GOT_TLSLD16_LO & 3) != (R_PPC64_GOT_TLSGD16_LO & 3) | |
14999 | || (R_PPC64_GOT_TLSLD16_HI & 3) != (R_PPC64_GOT_TLSGD16_HI & 3) | |
15000 | || (R_PPC64_GOT_TLSLD16_HA & 3) != (R_PPC64_GOT_TLSGD16_HA & 3) | |
15001 | || (R_PPC64_GOT_TLSLD16 & 3) != (R_PPC64_GOT_TPREL16_DS & 3) | |
15002 | || (R_PPC64_GOT_TLSLD16_LO & 3) != (R_PPC64_GOT_TPREL16_LO_DS & 3) | |
15003 | || (R_PPC64_GOT_TLSLD16_HI & 3) != (R_PPC64_GOT_TPREL16_HI & 3) | |
15004 | || (R_PPC64_GOT_TLSLD16_HA & 3) != (R_PPC64_GOT_TPREL16_HA & 3)) | |
15005 | abort (); | |
0d4792f7 | 15006 | |
411e1bfb AM |
15007 | switch (r_type) |
15008 | { | |
15009 | default: | |
411e1bfb AM |
15010 | break; |
15011 | ||
ba761f19 | 15012 | case R_PPC64_LO_DS_OPT: |
95f0d0d2 | 15013 | insn = bfd_get_32 (input_bfd, contents + rel->r_offset - d_offset); |
2365f8d7 | 15014 | if ((insn & (0x3fu << 26)) != 58u << 26) |
ba761f19 AM |
15015 | abort (); |
15016 | insn += (14u << 26) - (58u << 26); | |
95f0d0d2 | 15017 | bfd_put_32 (input_bfd, insn, contents + rel->r_offset - d_offset); |
ba761f19 AM |
15018 | r_type = R_PPC64_TOC16_LO; |
15019 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
15020 | break; | |
15021 | ||
411e1bfb AM |
15022 | case R_PPC64_TOC16: |
15023 | case R_PPC64_TOC16_LO: | |
15024 | case R_PPC64_TOC16_DS: | |
15025 | case R_PPC64_TOC16_LO_DS: | |
411e1bfb AM |
15026 | { |
15027 | /* Check for toc tls entries. */ | |
f961d9dd | 15028 | unsigned char *toc_tls; |
951fd09b | 15029 | int retval; |
411e1bfb | 15030 | |
3a71aa26 AM |
15031 | retval = get_tls_mask (&toc_tls, &toc_symndx, &toc_addend, |
15032 | &local_syms, rel, input_bfd); | |
951fd09b | 15033 | if (retval == 0) |
411e1bfb AM |
15034 | return FALSE; |
15035 | ||
15036 | if (toc_tls) | |
15037 | { | |
951fd09b | 15038 | tls_mask = *toc_tls; |
411e1bfb AM |
15039 | if (r_type == R_PPC64_TOC16_DS |
15040 | || r_type == R_PPC64_TOC16_LO_DS) | |
81407a69 | 15041 | { |
37da22e5 | 15042 | if ((tls_mask & TLS_TLS) != 0 |
81407a69 AM |
15043 | && (tls_mask & (TLS_DTPREL | TLS_TPREL)) == 0) |
15044 | goto toctprel; | |
15045 | } | |
411e1bfb | 15046 | else |
951fd09b AM |
15047 | { |
15048 | /* If we found a GD reloc pair, then we might be | |
15049 | doing a GD->IE transition. */ | |
15050 | if (retval == 2) | |
15051 | { | |
b00a0a86 | 15052 | tls_gd = TLS_GDIE; |
37da22e5 AM |
15053 | if ((tls_mask & TLS_TLS) != 0 |
15054 | && (tls_mask & TLS_GD) == 0) | |
102890f0 | 15055 | goto tls_ldgd_opt; |
951fd09b AM |
15056 | } |
15057 | else if (retval == 3) | |
15058 | { | |
37da22e5 AM |
15059 | if ((tls_mask & TLS_TLS) != 0 |
15060 | && (tls_mask & TLS_LD) == 0) | |
102890f0 | 15061 | goto tls_ldgd_opt; |
951fd09b AM |
15062 | } |
15063 | } | |
411e1bfb AM |
15064 | } |
15065 | } | |
15066 | break; | |
15067 | ||
9d6ded02 AM |
15068 | case R_PPC64_GOT_TPREL16_HI: |
15069 | case R_PPC64_GOT_TPREL16_HA: | |
37da22e5 | 15070 | if ((tls_mask & TLS_TLS) != 0 |
9d6ded02 AM |
15071 | && (tls_mask & TLS_TPREL) == 0) |
15072 | { | |
15073 | rel->r_offset -= d_offset; | |
95f0d0d2 | 15074 | bfd_put_32 (input_bfd, NOP, contents + rel->r_offset); |
9d6ded02 AM |
15075 | r_type = R_PPC64_NONE; |
15076 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
15077 | } | |
15078 | break; | |
15079 | ||
411e1bfb AM |
15080 | case R_PPC64_GOT_TPREL16_DS: |
15081 | case R_PPC64_GOT_TPREL16_LO_DS: | |
37da22e5 | 15082 | if ((tls_mask & TLS_TLS) != 0 |
951fd09b | 15083 | && (tls_mask & TLS_TPREL) == 0) |
411e1bfb | 15084 | { |
81407a69 | 15085 | toctprel: |
95f0d0d2 | 15086 | insn = bfd_get_32 (input_bfd, |
c316a17c | 15087 | contents + rel->r_offset - d_offset); |
411e1bfb AM |
15088 | insn &= 31 << 21; |
15089 | insn |= 0x3c0d0000; /* addis 0,13,0 */ | |
95f0d0d2 | 15090 | bfd_put_32 (input_bfd, insn, |
c316a17c | 15091 | contents + rel->r_offset - d_offset); |
411e1bfb | 15092 | r_type = R_PPC64_TPREL16_HA; |
0d4792f7 AM |
15093 | if (toc_symndx != 0) |
15094 | { | |
15095 | rel->r_info = ELF64_R_INFO (toc_symndx, r_type); | |
3a71aa26 | 15096 | rel->r_addend = toc_addend; |
0d4792f7 AM |
15097 | /* We changed the symbol. Start over in order to |
15098 | get h, sym, sec etc. right. */ | |
c316a17c | 15099 | goto again; |
0d4792f7 AM |
15100 | } |
15101 | else | |
15102 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
411e1bfb AM |
15103 | } |
15104 | break; | |
15105 | ||
87c69f97 | 15106 | case R_PPC64_GOT_TPREL_PCREL34: |
c213164a AM |
15107 | if ((tls_mask & TLS_TLS) != 0 |
15108 | && (tls_mask & TLS_TPREL) == 0) | |
15109 | { | |
15110 | /* pld ra,sym@got@tprel@pcrel -> paddi ra,r13,sym@tprel */ | |
15111 | pinsn = bfd_get_32 (input_bfd, contents + rel->r_offset); | |
15112 | pinsn <<= 32; | |
15113 | pinsn |= bfd_get_32 (input_bfd, contents + rel->r_offset + 4); | |
15114 | pinsn += ((2ULL << 56) + (-1ULL << 52) | |
15115 | + (14ULL << 26) - (57ULL << 26) + (13ULL << 16)); | |
15116 | bfd_put_32 (input_bfd, pinsn >> 32, | |
15117 | contents + rel->r_offset); | |
15118 | bfd_put_32 (input_bfd, pinsn & 0xffffffff, | |
15119 | contents + rel->r_offset + 4); | |
15120 | r_type = R_PPC64_TPREL34; | |
15121 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
15122 | } | |
15123 | break; | |
15124 | ||
411e1bfb | 15125 | case R_PPC64_TLS: |
37da22e5 | 15126 | if ((tls_mask & TLS_TLS) != 0 |
951fd09b | 15127 | && (tls_mask & TLS_TPREL) == 0) |
411e1bfb | 15128 | { |
c213164a | 15129 | insn = bfd_get_32 (input_bfd, contents + (rel->r_offset & ~3)); |
2d0f3896 AM |
15130 | insn = _bfd_elf_ppc_at_tls_transform (insn, 13); |
15131 | if (insn == 0) | |
c213164a AM |
15132 | break; |
15133 | if ((rel->r_offset & 3) == 0) | |
0d4792f7 | 15134 | { |
c213164a AM |
15135 | bfd_put_32 (input_bfd, insn, contents + rel->r_offset); |
15136 | /* Was PPC64_TLS which sits on insn boundary, now | |
15137 | PPC64_TPREL16_LO which is at low-order half-word. */ | |
15138 | rel->r_offset += d_offset; | |
15139 | r_type = R_PPC64_TPREL16_LO; | |
15140 | if (toc_symndx != 0) | |
15141 | { | |
15142 | rel->r_info = ELF64_R_INFO (toc_symndx, r_type); | |
15143 | rel->r_addend = toc_addend; | |
15144 | /* We changed the symbol. Start over in order to | |
15145 | get h, sym, sec etc. right. */ | |
15146 | goto again; | |
15147 | } | |
15148 | else | |
15149 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
15150 | } | |
15151 | else if ((rel->r_offset & 3) == 1) | |
15152 | { | |
15153 | /* For pcrel IE to LE we already have the full | |
15154 | offset and thus don't need an addi here. A nop | |
15155 | or mr will do. */ | |
2365f8d7 | 15156 | if ((insn & (0x3fu << 26)) == 14 << 26) |
c213164a AM |
15157 | { |
15158 | /* Extract regs from addi rt,ra,si. */ | |
15159 | unsigned int rt = (insn >> 21) & 0x1f; | |
15160 | unsigned int ra = (insn >> 16) & 0x1f; | |
15161 | if (rt == ra) | |
15162 | insn = NOP; | |
15163 | else | |
15164 | { | |
15165 | /* Build or ra,rs,rb with rb==rs, ie. mr ra,rs. */ | |
15166 | insn = (rt << 16) | (ra << 21) | (ra << 11); | |
15167 | insn |= (31u << 26) | (444u << 1); | |
15168 | } | |
15169 | } | |
15170 | bfd_put_32 (input_bfd, insn, contents + rel->r_offset - 1); | |
0d4792f7 | 15171 | } |
411e1bfb AM |
15172 | } |
15173 | break; | |
15174 | ||
411e1bfb AM |
15175 | case R_PPC64_GOT_TLSGD16_HI: |
15176 | case R_PPC64_GOT_TLSGD16_HA: | |
b00a0a86 | 15177 | tls_gd = TLS_GDIE; |
37da22e5 | 15178 | if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_GD) == 0) |
951fd09b AM |
15179 | goto tls_gdld_hi; |
15180 | break; | |
15181 | ||
411e1bfb AM |
15182 | case R_PPC64_GOT_TLSLD16_HI: |
15183 | case R_PPC64_GOT_TLSLD16_HA: | |
37da22e5 | 15184 | if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_LD) == 0) |
411e1bfb | 15185 | { |
951fd09b AM |
15186 | tls_gdld_hi: |
15187 | if ((tls_mask & tls_gd) != 0) | |
15188 | r_type = (((r_type - (R_PPC64_GOT_TLSGD16 & 3)) & 3) | |
15189 | + R_PPC64_GOT_TPREL16_DS); | |
15190 | else | |
411e1bfb | 15191 | { |
4fe5ca5b | 15192 | rel->r_offset -= d_offset; |
95f0d0d2 | 15193 | bfd_put_32 (input_bfd, NOP, contents + rel->r_offset); |
951fd09b | 15194 | r_type = R_PPC64_NONE; |
411e1bfb | 15195 | } |
951fd09b | 15196 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); |
411e1bfb AM |
15197 | } |
15198 | break; | |
15199 | ||
951fd09b AM |
15200 | case R_PPC64_GOT_TLSGD16: |
15201 | case R_PPC64_GOT_TLSGD16_LO: | |
b00a0a86 | 15202 | tls_gd = TLS_GDIE; |
37da22e5 | 15203 | if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_GD) == 0) |
102890f0 | 15204 | goto tls_ldgd_opt; |
951fd09b | 15205 | break; |
411e1bfb | 15206 | |
951fd09b AM |
15207 | case R_PPC64_GOT_TLSLD16: |
15208 | case R_PPC64_GOT_TLSLD16_LO: | |
37da22e5 | 15209 | if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_LD) == 0) |
951fd09b | 15210 | { |
b9f04fe0 | 15211 | unsigned int insn1, insn2; |
102890f0 AM |
15212 | |
15213 | tls_ldgd_opt: | |
727fc41e AM |
15214 | offset = (bfd_vma) -1; |
15215 | /* If not using the newer R_PPC64_TLSGD/LD to mark | |
15216 | __tls_get_addr calls, we must trust that the call | |
15217 | stays with its arg setup insns, ie. that the next | |
15218 | reloc is the __tls_get_addr call associated with | |
15219 | the current reloc. Edit both insns. */ | |
9737e8af | 15220 | if (input_section->nomark_tls_get_addr |
727fc41e AM |
15221 | && rel + 1 < relend |
15222 | && branch_reloc_hash_match (input_bfd, rel + 1, | |
9e7028aa AM |
15223 | htab->tls_get_addr_fd, |
15224 | htab->tga_desc_fd, | |
727fc41e | 15225 | htab->tls_get_addr, |
9e7028aa | 15226 | htab->tga_desc)) |
727fc41e | 15227 | offset = rel[1].r_offset; |
b86ac8e3 AM |
15228 | /* We read the low GOT_TLS (or TOC16) insn because we |
15229 | need to keep the destination reg. It may be | |
15230 | something other than the usual r3, and moved to r3 | |
15231 | before the call by intervening code. */ | |
95f0d0d2 | 15232 | insn1 = bfd_get_32 (input_bfd, |
b86ac8e3 | 15233 | contents + rel->r_offset - d_offset); |
102890f0 | 15234 | if ((tls_mask & tls_gd) != 0) |
411e1bfb | 15235 | { |
102890f0 | 15236 | /* IE */ |
b86ac8e3 | 15237 | insn1 &= (0x1f << 21) | (0x1f << 16); |
2365f8d7 | 15238 | insn1 |= 58u << 26; /* ld */ |
102890f0 | 15239 | insn2 = 0x7c636a14; /* add 3,3,13 */ |
727fc41e | 15240 | if (offset != (bfd_vma) -1) |
f58d5a2d | 15241 | rel[1].r_info = ELF64_R_INFO (STN_UNDEF, R_PPC64_NONE); |
46e9995a AM |
15242 | if (r_type == R_PPC64_TOC16 |
15243 | || r_type == R_PPC64_TOC16_LO) | |
102890f0 | 15244 | r_type += R_PPC64_TOC16_DS - R_PPC64_TOC16; |
46e9995a AM |
15245 | else |
15246 | r_type = (((r_type - (R_PPC64_GOT_TLSGD16 & 1)) & 1) | |
15247 | + R_PPC64_GOT_TPREL16_DS); | |
102890f0 AM |
15248 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); |
15249 | } | |
15250 | else | |
15251 | { | |
15252 | /* LE */ | |
b86ac8e3 AM |
15253 | insn1 &= 0x1f << 21; |
15254 | insn1 |= 0x3c0d0000; /* addis r,13,0 */ | |
102890f0 AM |
15255 | insn2 = 0x38630000; /* addi 3,3,0 */ |
15256 | if (tls_gd == 0) | |
951fd09b | 15257 | { |
102890f0 | 15258 | /* Was an LD reloc. */ |
71c4e95a | 15259 | r_symndx = STN_UNDEF; |
102890f0 | 15260 | rel->r_addend = htab->elf.tls_sec->vma + DTP_OFFSET; |
951fd09b | 15261 | } |
102890f0 | 15262 | else if (toc_symndx != 0) |
3a71aa26 AM |
15263 | { |
15264 | r_symndx = toc_symndx; | |
15265 | rel->r_addend = toc_addend; | |
15266 | } | |
102890f0 AM |
15267 | r_type = R_PPC64_TPREL16_HA; |
15268 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
727fc41e AM |
15269 | if (offset != (bfd_vma) -1) |
15270 | { | |
15271 | rel[1].r_info = ELF64_R_INFO (r_symndx, | |
15272 | R_PPC64_TPREL16_LO); | |
15273 | rel[1].r_offset = offset + d_offset; | |
15274 | rel[1].r_addend = rel->r_addend; | |
15275 | } | |
102890f0 | 15276 | } |
95f0d0d2 | 15277 | bfd_put_32 (input_bfd, insn1, |
3a71aa26 | 15278 | contents + rel->r_offset - d_offset); |
727fc41e | 15279 | if (offset != (bfd_vma) -1) |
c96e0573 AM |
15280 | { |
15281 | bfd_put_32 (input_bfd, insn2, contents + offset); | |
15282 | if (offset + 8 <= input_section->size) | |
15283 | { | |
15284 | insn2 = bfd_get_32 (input_bfd, contents + offset + 4); | |
15285 | if (insn2 == LD_R2_0R1 + STK_TOC (htab)) | |
15286 | bfd_put_32 (input_bfd, NOP, contents + offset + 4); | |
15287 | } | |
15288 | } | |
727fc41e AM |
15289 | if ((tls_mask & tls_gd) == 0 |
15290 | && (tls_gd == 0 || toc_symndx != 0)) | |
15291 | { | |
15292 | /* We changed the symbol. Start over in order | |
15293 | to get h, sym, sec etc. right. */ | |
c316a17c | 15294 | goto again; |
727fc41e AM |
15295 | } |
15296 | } | |
15297 | break; | |
15298 | ||
87c69f97 | 15299 | case R_PPC64_GOT_TLSGD_PCREL34: |
c213164a AM |
15300 | if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_GD) == 0) |
15301 | { | |
15302 | pinsn = bfd_get_32 (input_bfd, contents + rel->r_offset); | |
15303 | pinsn <<= 32; | |
15304 | pinsn |= bfd_get_32 (input_bfd, contents + rel->r_offset + 4); | |
15305 | if ((tls_mask & TLS_GDIE) != 0) | |
15306 | { | |
15307 | /* IE, pla -> pld */ | |
15308 | pinsn += (-2ULL << 56) + (57ULL << 26) - (14ULL << 26); | |
87c69f97 | 15309 | r_type = R_PPC64_GOT_TPREL_PCREL34; |
c213164a AM |
15310 | } |
15311 | else | |
15312 | { | |
15313 | /* LE, pla pcrel -> paddi r13 */ | |
15314 | pinsn += (-1ULL << 52) + (13ULL << 16); | |
15315 | r_type = R_PPC64_TPREL34; | |
15316 | } | |
15317 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
15318 | bfd_put_32 (input_bfd, pinsn >> 32, | |
15319 | contents + rel->r_offset); | |
15320 | bfd_put_32 (input_bfd, pinsn & 0xffffffff, | |
15321 | contents + rel->r_offset + 4); | |
15322 | } | |
15323 | break; | |
15324 | ||
87c69f97 | 15325 | case R_PPC64_GOT_TLSLD_PCREL34: |
c213164a AM |
15326 | if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_LD) == 0) |
15327 | { | |
15328 | pinsn = bfd_get_32 (input_bfd, contents + rel->r_offset); | |
15329 | pinsn <<= 32; | |
15330 | pinsn |= bfd_get_32 (input_bfd, contents + rel->r_offset + 4); | |
15331 | pinsn += (-1ULL << 52) + (13ULL << 16); | |
15332 | bfd_put_32 (input_bfd, pinsn >> 32, | |
15333 | contents + rel->r_offset); | |
15334 | bfd_put_32 (input_bfd, pinsn & 0xffffffff, | |
15335 | contents + rel->r_offset + 4); | |
15336 | rel->r_addend = htab->elf.tls_sec->vma + DTP_OFFSET; | |
15337 | r_symndx = STN_UNDEF; | |
15338 | r_type = R_PPC64_TPREL34; | |
15339 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
15340 | goto again; | |
15341 | } | |
15342 | break; | |
15343 | ||
727fc41e | 15344 | case R_PPC64_TLSGD: |
37da22e5 | 15345 | if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_GD) == 0 |
675e2809 | 15346 | && rel + 1 < relend) |
727fc41e | 15347 | { |
b9f04fe0 | 15348 | unsigned int insn2; |
5663e321 | 15349 | enum elf_ppc64_reloc_type r_type1 = ELF64_R_TYPE (rel[1].r_info); |
727fc41e | 15350 | |
4a421c53 | 15351 | offset = rel->r_offset; |
5663e321 | 15352 | if (is_plt_seq_reloc (r_type1)) |
23cedd1d AM |
15353 | { |
15354 | bfd_put_32 (output_bfd, NOP, contents + offset); | |
5663e321 AM |
15355 | if (r_type1 == R_PPC64_PLT_PCREL34 |
15356 | || r_type1 == R_PPC64_PLT_PCREL34_NOTOC) | |
15357 | bfd_put_32 (output_bfd, NOP, contents + offset + 4); | |
23cedd1d AM |
15358 | rel[1].r_info = ELF64_R_INFO (STN_UNDEF, R_PPC64_NONE); |
15359 | break; | |
15360 | } | |
15361 | ||
15362 | if (ELF64_R_TYPE (rel[1].r_info) == R_PPC64_PLTCALL) | |
15363 | bfd_put_32 (output_bfd, NOP, contents + offset + 4); | |
15364 | ||
b00a0a86 | 15365 | if ((tls_mask & TLS_GDIE) != 0) |
727fc41e AM |
15366 | { |
15367 | /* IE */ | |
15368 | r_type = R_PPC64_NONE; | |
15369 | insn2 = 0x7c636a14; /* add 3,3,13 */ | |
15370 | } | |
15371 | else | |
15372 | { | |
15373 | /* LE */ | |
15374 | if (toc_symndx != 0) | |
15375 | { | |
15376 | r_symndx = toc_symndx; | |
15377 | rel->r_addend = toc_addend; | |
15378 | } | |
c213164a AM |
15379 | if (r_type1 == R_PPC64_REL24_NOTOC |
15380 | || r_type1 == R_PPC64_PLTCALL_NOTOC) | |
15381 | { | |
15382 | r_type = R_PPC64_NONE; | |
15383 | insn2 = NOP; | |
15384 | } | |
15385 | else | |
15386 | { | |
15387 | rel->r_offset = offset + d_offset; | |
15388 | r_type = R_PPC64_TPREL16_LO; | |
15389 | insn2 = 0x38630000; /* addi 3,3,0 */ | |
15390 | } | |
727fc41e AM |
15391 | } |
15392 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
15393 | /* Zap the reloc on the _tls_get_addr call too. */ | |
15394 | BFD_ASSERT (offset == rel[1].r_offset); | |
f58d5a2d | 15395 | rel[1].r_info = ELF64_R_INFO (STN_UNDEF, R_PPC64_NONE); |
95f0d0d2 | 15396 | bfd_put_32 (input_bfd, insn2, contents + offset); |
c213164a AM |
15397 | if ((tls_mask & TLS_GDIE) == 0 |
15398 | && toc_symndx != 0 | |
15399 | && r_type != R_PPC64_NONE) | |
c316a17c | 15400 | goto again; |
411e1bfb | 15401 | } |
411e1bfb AM |
15402 | break; |
15403 | ||
727fc41e | 15404 | case R_PPC64_TLSLD: |
37da22e5 | 15405 | if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_LD) == 0 |
675e2809 | 15406 | && rel + 1 < relend) |
727fc41e | 15407 | { |
b9f04fe0 | 15408 | unsigned int insn2; |
5663e321 | 15409 | enum elf_ppc64_reloc_type r_type1 = ELF64_R_TYPE (rel[1].r_info); |
727fc41e | 15410 | |
4a421c53 | 15411 | offset = rel->r_offset; |
5663e321 | 15412 | if (is_plt_seq_reloc (r_type1)) |
23cedd1d AM |
15413 | { |
15414 | bfd_put_32 (output_bfd, NOP, contents + offset); | |
5663e321 AM |
15415 | if (r_type1 == R_PPC64_PLT_PCREL34 |
15416 | || r_type1 == R_PPC64_PLT_PCREL34_NOTOC) | |
15417 | bfd_put_32 (output_bfd, NOP, contents + offset + 4); | |
23cedd1d AM |
15418 | rel[1].r_info = ELF64_R_INFO (STN_UNDEF, R_PPC64_NONE); |
15419 | break; | |
15420 | } | |
15421 | ||
15422 | if (ELF64_R_TYPE (rel[1].r_info) == R_PPC64_PLTCALL) | |
15423 | bfd_put_32 (output_bfd, NOP, contents + offset + 4); | |
15424 | ||
c213164a AM |
15425 | if (r_type1 == R_PPC64_REL24_NOTOC |
15426 | || r_type1 == R_PPC64_PLTCALL_NOTOC) | |
15427 | { | |
15428 | r_type = R_PPC64_NONE; | |
15429 | insn2 = NOP; | |
15430 | } | |
15431 | else | |
15432 | { | |
15433 | rel->r_offset = offset + d_offset; | |
15434 | r_symndx = STN_UNDEF; | |
15435 | r_type = R_PPC64_TPREL16_LO; | |
15436 | rel->r_addend = htab->elf.tls_sec->vma + DTP_OFFSET; | |
15437 | insn2 = 0x38630000; /* addi 3,3,0 */ | |
15438 | } | |
727fc41e | 15439 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); |
727fc41e AM |
15440 | /* Zap the reloc on the _tls_get_addr call too. */ |
15441 | BFD_ASSERT (offset == rel[1].r_offset); | |
f58d5a2d | 15442 | rel[1].r_info = ELF64_R_INFO (STN_UNDEF, R_PPC64_NONE); |
95f0d0d2 | 15443 | bfd_put_32 (input_bfd, insn2, contents + offset); |
c213164a AM |
15444 | if (r_type != R_PPC64_NONE) |
15445 | goto again; | |
727fc41e AM |
15446 | } |
15447 | break; | |
15448 | ||
411e1bfb | 15449 | case R_PPC64_DTPMOD64: |
951fd09b AM |
15450 | if (rel + 1 < relend |
15451 | && rel[1].r_info == ELF64_R_INFO (r_symndx, R_PPC64_DTPREL64) | |
15452 | && rel[1].r_offset == rel->r_offset + 8) | |
411e1bfb | 15453 | { |
951fd09b AM |
15454 | if ((tls_mask & TLS_GD) == 0) |
15455 | { | |
15456 | rel[1].r_info = ELF64_R_INFO (r_symndx, R_PPC64_NONE); | |
b00a0a86 | 15457 | if ((tls_mask & TLS_GDIE) != 0) |
951fd09b AM |
15458 | r_type = R_PPC64_TPREL64; |
15459 | else | |
15460 | { | |
4ce794b7 | 15461 | bfd_put_64 (output_bfd, 1, contents + rel->r_offset); |
951fd09b AM |
15462 | r_type = R_PPC64_NONE; |
15463 | } | |
15464 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
15465 | } | |
15466 | } | |
15467 | else | |
15468 | { | |
15469 | if ((tls_mask & TLS_LD) == 0) | |
411e1bfb | 15470 | { |
4ce794b7 | 15471 | bfd_put_64 (output_bfd, 1, contents + rel->r_offset); |
411e1bfb | 15472 | r_type = R_PPC64_NONE; |
951fd09b | 15473 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); |
411e1bfb | 15474 | } |
411e1bfb AM |
15475 | } |
15476 | break; | |
15477 | ||
15478 | case R_PPC64_TPREL64: | |
951fd09b | 15479 | if ((tls_mask & TLS_TPREL) == 0) |
411e1bfb AM |
15480 | { |
15481 | r_type = R_PPC64_NONE; | |
15482 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
15483 | } | |
15484 | break; | |
52a82034 | 15485 | |
006589cf AM |
15486 | case R_PPC64_ENTRY: |
15487 | relocation = TOCstart + htab->sec_info[input_section->id].toc_off; | |
15488 | if (!bfd_link_pic (info) | |
15489 | && !info->traditional_format | |
15490 | && relocation + 0x80008000 <= 0xffffffff) | |
15491 | { | |
15492 | unsigned int insn1, insn2; | |
15493 | ||
15494 | insn1 = bfd_get_32 (input_bfd, contents + rel->r_offset); | |
15495 | insn2 = bfd_get_32 (input_bfd, contents + rel->r_offset + 4); | |
15496 | if ((insn1 & ~0xfffc) == LD_R2_0R12 | |
15497 | && insn2 == ADD_R2_R2_R12) | |
15498 | { | |
95f0d0d2 | 15499 | bfd_put_32 (input_bfd, |
006589cf AM |
15500 | LIS_R2 + PPC_HA (relocation), |
15501 | contents + rel->r_offset); | |
95f0d0d2 | 15502 | bfd_put_32 (input_bfd, |
006589cf AM |
15503 | ADDI_R2_R2 + PPC_LO (relocation), |
15504 | contents + rel->r_offset + 4); | |
15505 | } | |
15506 | } | |
15507 | else | |
15508 | { | |
15509 | relocation -= (rel->r_offset | |
15510 | + input_section->output_offset | |
15511 | + input_section->output_section->vma); | |
15512 | if (relocation + 0x80008000 <= 0xffffffff) | |
15513 | { | |
15514 | unsigned int insn1, insn2; | |
15515 | ||
15516 | insn1 = bfd_get_32 (input_bfd, contents + rel->r_offset); | |
15517 | insn2 = bfd_get_32 (input_bfd, contents + rel->r_offset + 4); | |
15518 | if ((insn1 & ~0xfffc) == LD_R2_0R12 | |
15519 | && insn2 == ADD_R2_R2_R12) | |
15520 | { | |
95f0d0d2 | 15521 | bfd_put_32 (input_bfd, |
006589cf AM |
15522 | ADDIS_R2_R12 + PPC_HA (relocation), |
15523 | contents + rel->r_offset); | |
95f0d0d2 | 15524 | bfd_put_32 (input_bfd, |
006589cf AM |
15525 | ADDI_R2_R2 + PPC_LO (relocation), |
15526 | contents + rel->r_offset + 4); | |
15527 | } | |
15528 | } | |
15529 | } | |
15530 | break; | |
15531 | ||
52a82034 AM |
15532 | case R_PPC64_REL16_HA: |
15533 | /* If we are generating a non-PIC executable, edit | |
15534 | . 0: addis 2,12,.TOC.-0b@ha | |
15535 | . addi 2,2,.TOC.-0b@l | |
15536 | used by ELFv2 global entry points to set up r2, to | |
15537 | . lis 2,.TOC.@ha | |
15538 | . addi 2,2,.TOC.@l | |
15539 | if .TOC. is in range. */ | |
0e1862bb | 15540 | if (!bfd_link_pic (info) |
810d4e75 | 15541 | && !info->traditional_format |
006589cf | 15542 | && !htab->opd_abi |
4f038ee5 | 15543 | && rel->r_addend == d_offset |
52a82034 AM |
15544 | && h != NULL && &h->elf == htab->elf.hgot |
15545 | && rel + 1 < relend | |
15546 | && rel[1].r_info == ELF64_R_INFO (r_symndx, R_PPC64_REL16_LO) | |
15547 | && rel[1].r_offset == rel->r_offset + 4 | |
15548 | && rel[1].r_addend == rel->r_addend + 4 | |
15549 | && relocation + 0x80008000 <= 0xffffffff) | |
15550 | { | |
15551 | unsigned int insn1, insn2; | |
4a421c53 | 15552 | offset = rel->r_offset - d_offset; |
95f0d0d2 AM |
15553 | insn1 = bfd_get_32 (input_bfd, contents + offset); |
15554 | insn2 = bfd_get_32 (input_bfd, contents + offset + 4); | |
006589cf AM |
15555 | if ((insn1 & 0xffff0000) == ADDIS_R2_R12 |
15556 | && (insn2 & 0xffff0000) == ADDI_R2_R2) | |
52a82034 AM |
15557 | { |
15558 | r_type = R_PPC64_ADDR16_HA; | |
15559 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
15560 | rel->r_addend -= d_offset; | |
15561 | rel[1].r_info = ELF64_R_INFO (r_symndx, R_PPC64_ADDR16_LO); | |
15562 | rel[1].r_addend -= d_offset + 4; | |
95f0d0d2 | 15563 | bfd_put_32 (input_bfd, LIS_R2, contents + offset); |
52a82034 AM |
15564 | } |
15565 | } | |
15566 | break; | |
411e1bfb AM |
15567 | } |
15568 | ||
15569 | /* Handle other relocations that tweak non-addend part of insn. */ | |
86c76c7b | 15570 | insn = 0; |
b25116a9 AM |
15571 | max_br_offset = 1 << 25; |
15572 | addend = rel->r_addend; | |
bc30df16 | 15573 | reloc_dest = DEST_NORMAL; |
65f38f15 | 15574 | switch (r_type) |
5bd4f169 AM |
15575 | { |
15576 | default: | |
65f38f15 | 15577 | break; |
5bd4f169 | 15578 | |
3b421ab3 AM |
15579 | case R_PPC64_TOCSAVE: |
15580 | if (relocation + addend == (rel->r_offset | |
15581 | + input_section->output_offset | |
15582 | + input_section->output_section->vma) | |
15583 | && tocsave_find (htab, NO_INSERT, | |
15584 | &local_syms, rel, input_bfd)) | |
15585 | { | |
15586 | insn = bfd_get_32 (input_bfd, contents + rel->r_offset); | |
15587 | if (insn == NOP | |
15588 | || insn == CROR_151515 || insn == CROR_313131) | |
a078d95a AM |
15589 | bfd_put_32 (input_bfd, |
15590 | STD_R2_0R1 + STK_TOC (htab), | |
3b421ab3 AM |
15591 | contents + rel->r_offset); |
15592 | } | |
15593 | break; | |
15594 | ||
65f38f15 AM |
15595 | /* Branch taken prediction relocations. */ |
15596 | case R_PPC64_ADDR14_BRTAKEN: | |
15597 | case R_PPC64_REL14_BRTAKEN: | |
cedb70c5 | 15598 | insn = 0x01 << 21; /* 'y' or 't' bit, lowest bit of BO field. */ |
1a0670f3 | 15599 | /* Fall through. */ |
65f38f15 | 15600 | |
86c76c7b | 15601 | /* Branch not taken prediction relocations. */ |
65f38f15 AM |
15602 | case R_PPC64_ADDR14_BRNTAKEN: |
15603 | case R_PPC64_REL14_BRNTAKEN: | |
95f0d0d2 | 15604 | insn |= bfd_get_32 (input_bfd, |
411e1bfb | 15605 | contents + rel->r_offset) & ~(0x01 << 21); |
1a0670f3 | 15606 | /* Fall through. */ |
86c76c7b | 15607 | |
b25116a9 AM |
15608 | case R_PPC64_REL14: |
15609 | max_br_offset = 1 << 15; | |
1a0670f3 | 15610 | /* Fall through. */ |
5bd4f169 | 15611 | |
65f38f15 | 15612 | case R_PPC64_REL24: |
05d0e962 | 15613 | case R_PPC64_REL24_NOTOC: |
23cedd1d | 15614 | case R_PPC64_PLTCALL: |
5663e321 | 15615 | case R_PPC64_PLTCALL_NOTOC: |
ad8e1ba5 AM |
15616 | /* Calls to functions with a different TOC, such as calls to |
15617 | shared objects, need to alter the TOC pointer. This is | |
15618 | done using a linkage stub. A REL24 branching to these | |
15619 | linkage stubs needs to be followed by a nop, as the nop | |
15620 | will be replaced with an instruction to restore the TOC | |
15621 | base pointer. */ | |
8387904d | 15622 | fdh = h; |
b31867b6 AM |
15623 | if (h != NULL |
15624 | && h->oh != NULL | |
15625 | && h->oh->is_func_descriptor) | |
15626 | fdh = ppc_follow_link (h->oh); | |
31c76678 DK |
15627 | stub_entry = ppc_get_stub_entry (input_section, sec, fdh, &orig_rel, |
15628 | htab); | |
5663e321 AM |
15629 | if ((r_type == R_PPC64_PLTCALL |
15630 | || r_type == R_PPC64_PLTCALL_NOTOC) | |
23cedd1d | 15631 | && stub_entry != NULL |
05d0e962 AM |
15632 | && stub_entry->stub_type >= ppc_stub_plt_call |
15633 | && stub_entry->stub_type <= ppc_stub_plt_call_both) | |
23cedd1d AM |
15634 | stub_entry = NULL; |
15635 | ||
6abec6bc | 15636 | if (stub_entry != NULL |
d0abeec8 AM |
15637 | && ((stub_entry->stub_type >= ppc_stub_plt_call |
15638 | && stub_entry->stub_type <= ppc_stub_plt_call_both) | |
ad8e1ba5 | 15639 | || stub_entry->stub_type == ppc_stub_plt_branch_r2off |
05d0e962 AM |
15640 | || stub_entry->stub_type == ppc_stub_plt_branch_both |
15641 | || stub_entry->stub_type == ppc_stub_long_branch_r2off | |
15642 | || stub_entry->stub_type == ppc_stub_long_branch_both)) | |
41bd81ab | 15643 | { |
b25116a9 | 15644 | bfd_boolean can_plt_call = FALSE; |
721956f4 | 15645 | |
6e1816be AM |
15646 | if (stub_entry->stub_type == ppc_stub_plt_call |
15647 | && !htab->opd_abi | |
15648 | && htab->params->plt_localentry0 != 0 | |
15649 | && is_elfv2_localentry0 (&h->elf)) | |
15650 | { | |
15651 | /* The function doesn't use or change r2. */ | |
15652 | can_plt_call = TRUE; | |
15653 | } | |
05d0e962 AM |
15654 | else if (r_type == R_PPC64_REL24_NOTOC) |
15655 | { | |
15656 | /* NOTOC calls don't need to restore r2. */ | |
15657 | can_plt_call = TRUE; | |
15658 | } | |
6e1816be | 15659 | |
f378ab09 | 15660 | /* All of these stubs may modify r2, so there must be a |
ba8ca3e7 AM |
15661 | branch and link followed by a nop. The nop is |
15662 | replaced by an insn to restore r2. */ | |
6e1816be | 15663 | else if (rel->r_offset + 8 <= input_section->size) |
41bd81ab | 15664 | { |
ba8ca3e7 AM |
15665 | unsigned long br; |
15666 | ||
15667 | br = bfd_get_32 (input_bfd, | |
15668 | contents + rel->r_offset); | |
15669 | if ((br & 1) != 0) | |
41bd81ab | 15670 | { |
ba8ca3e7 AM |
15671 | unsigned long nop; |
15672 | ||
15673 | nop = bfd_get_32 (input_bfd, | |
15674 | contents + rel->r_offset + 4); | |
23cedd1d AM |
15675 | if (nop == LD_R2_0R1 + STK_TOC (htab)) |
15676 | can_plt_call = TRUE; | |
15677 | else if (nop == NOP | |
15678 | || nop == CROR_151515 | |
15679 | || nop == CROR_313131) | |
a7f2871e | 15680 | { |
ba8ca3e7 | 15681 | if (h != NULL |
ed7007c1 | 15682 | && is_tls_get_addr (&h->elf, htab) |
7c9cf415 | 15683 | && htab->params->tls_get_addr_opt) |
ba8ca3e7 AM |
15684 | { |
15685 | /* Special stub used, leave nop alone. */ | |
15686 | } | |
15687 | else | |
a078d95a AM |
15688 | bfd_put_32 (input_bfd, |
15689 | LD_R2_0R1 + STK_TOC (htab), | |
ba8ca3e7 AM |
15690 | contents + rel->r_offset + 4); |
15691 | can_plt_call = TRUE; | |
a7f2871e | 15692 | } |
41bd81ab | 15693 | } |
5bd4f169 | 15694 | } |
721956f4 | 15695 | |
ba8ca3e7 | 15696 | if (!can_plt_call && h != NULL) |
721956f4 | 15697 | { |
ba8ca3e7 AM |
15698 | const char *name = h->elf.root.root.string; |
15699 | ||
15700 | if (*name == '.') | |
15701 | ++name; | |
15702 | ||
15703 | if (strncmp (name, "__libc_start_main", 17) == 0 | |
15704 | && (name[17] == 0 || name[17] == '@')) | |
6ab189d5 | 15705 | { |
ba8ca3e7 AM |
15706 | /* Allow crt1 branch to go via a toc adjusting |
15707 | stub. Other calls that never return could do | |
15708 | the same, if we could detect such. */ | |
b25116a9 | 15709 | can_plt_call = TRUE; |
6ab189d5 | 15710 | } |
ba8ca3e7 AM |
15711 | } |
15712 | ||
15713 | if (!can_plt_call) | |
15714 | { | |
15715 | /* g++ as of 20130507 emits self-calls without a | |
15716 | following nop. This is arguably wrong since we | |
15717 | have conflicting information. On the one hand a | |
15718 | global symbol and on the other a local call | |
15719 | sequence, but don't error for this special case. | |
15720 | It isn't possible to cheaply verify we have | |
15721 | exactly such a call. Allow all calls to the same | |
15722 | section. */ | |
15723 | asection *code_sec = sec; | |
15724 | ||
15725 | if (get_opd_info (sec) != NULL) | |
ad8e1ba5 | 15726 | { |
ba8ca3e7 AM |
15727 | bfd_vma off = (relocation + addend |
15728 | - sec->output_section->vma | |
15729 | - sec->output_offset); | |
bc30df16 | 15730 | |
ba8ca3e7 | 15731 | opd_entry_value (sec, off, &code_sec, NULL, FALSE); |
ad8e1ba5 | 15732 | } |
ba8ca3e7 AM |
15733 | if (code_sec == input_section) |
15734 | can_plt_call = TRUE; | |
15735 | } | |
15736 | ||
15737 | if (!can_plt_call) | |
15738 | { | |
05d0e962 AM |
15739 | if (stub_entry->stub_type >= ppc_stub_plt_call |
15740 | && stub_entry->stub_type <= ppc_stub_plt_call_both) | |
4805fc55 | 15741 | info->callbacks->einfo |
695344c0 | 15742 | /* xgettext:c-format */ |
c1c8c1ef | 15743 | (_("%H: call to `%pT' lacks nop, can't restore toc; " |
f53ad3cf | 15744 | "(plt call stub)\n"), |
4805fc55 AM |
15745 | input_bfd, input_section, rel->r_offset, sym_name); |
15746 | else | |
15747 | info->callbacks->einfo | |
695344c0 | 15748 | /* xgettext:c-format */ |
c1c8c1ef | 15749 | (_("%H: call to `%pT' lacks nop, can't restore toc; " |
f53ad3cf | 15750 | "(toc save/adjust stub)\n"), |
4805fc55 | 15751 | input_bfd, input_section, rel->r_offset, sym_name); |
ba8ca3e7 AM |
15752 | |
15753 | bfd_set_error (bfd_error_bad_value); | |
15754 | ret = FALSE; | |
721956f4 AM |
15755 | } |
15756 | ||
b25116a9 | 15757 | if (can_plt_call |
05d0e962 AM |
15758 | && stub_entry->stub_type >= ppc_stub_plt_call |
15759 | && stub_entry->stub_type <= ppc_stub_plt_call_both) | |
b25116a9 AM |
15760 | unresolved_reloc = FALSE; |
15761 | } | |
15762 | ||
6abec6bc AM |
15763 | if ((stub_entry == NULL |
15764 | || stub_entry->stub_type == ppc_stub_long_branch | |
15765 | || stub_entry->stub_type == ppc_stub_plt_branch) | |
8387904d AM |
15766 | && get_opd_info (sec) != NULL) |
15767 | { | |
15768 | /* The branch destination is the value of the opd entry. */ | |
4cc603a5 AM |
15769 | bfd_vma off = (relocation + addend |
15770 | - sec->output_section->vma | |
15771 | - sec->output_offset); | |
aef36ac1 | 15772 | bfd_vma dest = opd_entry_value (sec, off, NULL, NULL, FALSE); |
8387904d AM |
15773 | if (dest != (bfd_vma) -1) |
15774 | { | |
15775 | relocation = dest; | |
15776 | addend = 0; | |
bc30df16 | 15777 | reloc_dest = DEST_OPD; |
8387904d AM |
15778 | } |
15779 | } | |
15780 | ||
b25116a9 AM |
15781 | /* If the branch is out of reach we ought to have a long |
15782 | branch stub. */ | |
15783 | from = (rel->r_offset | |
15784 | + input_section->output_offset | |
15785 | + input_section->output_section->vma); | |
15786 | ||
6911b7dc AM |
15787 | relocation += PPC64_LOCAL_ENTRY_OFFSET (fdh |
15788 | ? fdh->elf.other | |
15789 | : sym->st_other); | |
15790 | ||
6abec6bc AM |
15791 | if (stub_entry != NULL |
15792 | && (stub_entry->stub_type == ppc_stub_long_branch | |
15793 | || stub_entry->stub_type == ppc_stub_plt_branch) | |
15794 | && (r_type == R_PPC64_ADDR14_BRTAKEN | |
15795 | || r_type == R_PPC64_ADDR14_BRNTAKEN | |
15796 | || (relocation + addend - from + max_br_offset | |
15797 | < 2 * max_br_offset))) | |
15798 | /* Don't use the stub if this branch is in range. */ | |
15799 | stub_entry = NULL; | |
b25116a9 | 15800 | |
05d0e962 AM |
15801 | if (stub_entry != NULL |
15802 | && (stub_entry->stub_type == ppc_stub_long_branch_notoc | |
15803 | || stub_entry->stub_type == ppc_stub_long_branch_both | |
15804 | || stub_entry->stub_type == ppc_stub_plt_branch_notoc | |
15805 | || stub_entry->stub_type == ppc_stub_plt_branch_both) | |
15806 | && (r_type != R_PPC64_REL24_NOTOC | |
15807 | || ((fdh ? fdh->elf.other : sym->st_other) | |
4a4e7361 | 15808 | & STO_PPC64_LOCAL_MASK) <= 1 << STO_PPC64_LOCAL_BIT) |
05d0e962 AM |
15809 | && (relocation + addend - from + max_br_offset |
15810 | < 2 * max_br_offset)) | |
15811 | stub_entry = NULL; | |
15812 | ||
15813 | if (stub_entry != NULL | |
15814 | && (stub_entry->stub_type == ppc_stub_long_branch_r2off | |
15815 | || stub_entry->stub_type == ppc_stub_long_branch_both | |
15816 | || stub_entry->stub_type == ppc_stub_plt_branch_r2off | |
15817 | || stub_entry->stub_type == ppc_stub_plt_branch_both) | |
15818 | && r_type == R_PPC64_REL24_NOTOC | |
15819 | && (relocation + addend - from + max_br_offset | |
15820 | < 2 * max_br_offset)) | |
15821 | stub_entry = NULL; | |
15822 | ||
b25116a9 AM |
15823 | if (stub_entry != NULL) |
15824 | { | |
15825 | /* Munge up the value and addend so that we call the stub | |
15826 | rather than the procedure directly. */ | |
a4b6fadd AM |
15827 | asection *stub_sec = stub_entry->group->stub_sec; |
15828 | ||
15829 | if (stub_entry->stub_type == ppc_stub_save_res) | |
15830 | relocation += (stub_sec->output_offset | |
15831 | + stub_sec->output_section->vma | |
15832 | + stub_sec->size - htab->sfpr->size | |
15833 | - htab->sfpr->output_offset | |
15834 | - htab->sfpr->output_section->vma); | |
15835 | else | |
15836 | relocation = (stub_entry->stub_offset | |
15837 | + stub_sec->output_offset | |
15838 | + stub_sec->output_section->vma); | |
b25116a9 | 15839 | addend = 0; |
bc30df16 | 15840 | reloc_dest = DEST_STUB; |
3b421ab3 | 15841 | |
05d0e962 AM |
15842 | if (((stub_entry->stub_type == ppc_stub_plt_call |
15843 | && ALWAYS_EMIT_R2SAVE) | |
15844 | || stub_entry->stub_type == ppc_stub_plt_call_r2save | |
15845 | || stub_entry->stub_type == ppc_stub_plt_call_both) | |
e81b4c93 | 15846 | && !(h != NULL |
ed7007c1 | 15847 | && is_tls_get_addr (&h->elf, htab) |
e81b4c93 | 15848 | && htab->params->tls_get_addr_opt) |
3b421ab3 AM |
15849 | && rel + 1 < relend |
15850 | && rel[1].r_offset == rel->r_offset + 4 | |
15851 | && ELF64_R_TYPE (rel[1].r_info) == R_PPC64_TOCSAVE) | |
15852 | relocation += 4; | |
05d0e962 AM |
15853 | else if ((stub_entry->stub_type == ppc_stub_long_branch_both |
15854 | || stub_entry->stub_type == ppc_stub_plt_branch_both | |
15855 | || stub_entry->stub_type == ppc_stub_plt_call_both) | |
15856 | && r_type == R_PPC64_REL24_NOTOC) | |
15857 | relocation += 4; | |
5663e321 AM |
15858 | |
15859 | if (r_type == R_PPC64_REL24_NOTOC | |
15860 | && (stub_entry->stub_type == ppc_stub_plt_call_notoc | |
15861 | || stub_entry->stub_type == ppc_stub_plt_call_both)) | |
15862 | htab->notoc_plt = 1; | |
b25116a9 AM |
15863 | } |
15864 | ||
15865 | if (insn != 0) | |
15866 | { | |
794e51c0 | 15867 | if (is_isa_v2) |
721956f4 | 15868 | { |
b25116a9 AM |
15869 | /* Set 'a' bit. This is 0b00010 in BO field for branch |
15870 | on CR(BI) insns (BO == 001at or 011at), and 0b01000 | |
15871 | for branch on CTR insns (BO == 1a00t or 1a01t). */ | |
15872 | if ((insn & (0x14 << 21)) == (0x04 << 21)) | |
15873 | insn |= 0x02 << 21; | |
15874 | else if ((insn & (0x14 << 21)) == (0x10 << 21)) | |
15875 | insn |= 0x08 << 21; | |
15876 | else | |
15877 | break; | |
15878 | } | |
15879 | else | |
15880 | { | |
15881 | /* Invert 'y' bit if not the default. */ | |
4cc603a5 | 15882 | if ((bfd_signed_vma) (relocation + addend - from) < 0) |
b25116a9 | 15883 | insn ^= 0x01 << 21; |
721956f4 | 15884 | } |
b25116a9 | 15885 | |
95f0d0d2 | 15886 | bfd_put_32 (input_bfd, insn, contents + rel->r_offset); |
5bd4f169 | 15887 | } |
e86ce104 | 15888 | |
06da1e8e AM |
15889 | /* NOP out calls to undefined weak functions. |
15890 | We can thus call a weak function without first | |
15891 | checking whether the function is defined. */ | |
b25116a9 | 15892 | else if (h != NULL |
039b3fef | 15893 | && h->elf.root.type == bfd_link_hash_undefweak |
766bc656 | 15894 | && h->elf.dynindx == -1 |
05d0e962 AM |
15895 | && (r_type == R_PPC64_REL24 |
15896 | || r_type == R_PPC64_REL24_NOTOC) | |
b25116a9 | 15897 | && relocation == 0 |
4cc603a5 | 15898 | && addend == 0) |
e86ce104 | 15899 | { |
95f0d0d2 | 15900 | bfd_put_32 (input_bfd, NOP, contents + rel->r_offset); |
c316a17c | 15901 | goto copy_reloc; |
e86ce104 | 15902 | } |
65f38f15 | 15903 | break; |
066f4018 AM |
15904 | |
15905 | case R_PPC64_GOT16_DS: | |
6738c8a7 AM |
15906 | if ((h ? h->elf.type : ELF_ST_TYPE (sym->st_info)) == STT_GNU_IFUNC |
15907 | || !htab->do_toc_opt) | |
06507dab | 15908 | break; |
066f4018 AM |
15909 | from = TOCstart + htab->sec_info[input_section->id].toc_off; |
15910 | if (relocation + addend - from + 0x8000 < 0x10000 | |
15911 | && SYMBOL_REFERENCES_LOCAL (info, &h->elf)) | |
15912 | { | |
15913 | insn = bfd_get_32 (input_bfd, contents + (rel->r_offset & ~3)); | |
2365f8d7 | 15914 | if ((insn & (0x3fu << 26 | 0x3)) == 58u << 26 /* ld */) |
066f4018 AM |
15915 | { |
15916 | insn += (14u << 26) - (58u << 26); | |
15917 | bfd_put_32 (input_bfd, insn, contents + (rel->r_offset & ~3)); | |
15918 | r_type = R_PPC64_TOC16; | |
15919 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
15920 | } | |
15921 | } | |
15922 | break; | |
15923 | ||
15924 | case R_PPC64_GOT16_LO_DS: | |
15925 | case R_PPC64_GOT16_HA: | |
6738c8a7 AM |
15926 | if ((h ? h->elf.type : ELF_ST_TYPE (sym->st_info)) == STT_GNU_IFUNC |
15927 | || !htab->do_toc_opt) | |
06507dab | 15928 | break; |
066f4018 AM |
15929 | from = TOCstart + htab->sec_info[input_section->id].toc_off; |
15930 | if (relocation + addend - from + 0x80008000ULL < 0x100000000ULL | |
15931 | && SYMBOL_REFERENCES_LOCAL (info, &h->elf)) | |
15932 | { | |
15933 | insn = bfd_get_32 (input_bfd, contents + (rel->r_offset & ~3)); | |
2365f8d7 | 15934 | if ((insn & (0x3fu << 26 | 0x3)) == 58u << 26 /* ld */) |
066f4018 AM |
15935 | { |
15936 | insn += (14u << 26) - (58u << 26); | |
15937 | bfd_put_32 (input_bfd, insn, contents + (rel->r_offset & ~3)); | |
15938 | r_type = R_PPC64_TOC16_LO; | |
15939 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
15940 | } | |
2365f8d7 | 15941 | else if ((insn & (0x3fu << 26)) == 15u << 26 /* addis */) |
066f4018 AM |
15942 | { |
15943 | r_type = R_PPC64_TOC16_HA; | |
15944 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
15945 | } | |
15946 | } | |
15947 | break; | |
4a421c53 AM |
15948 | |
15949 | case R_PPC64_GOT_PCREL34: | |
6738c8a7 AM |
15950 | if ((h ? h->elf.type : ELF_ST_TYPE (sym->st_info)) == STT_GNU_IFUNC |
15951 | || !htab->do_toc_opt) | |
06507dab | 15952 | break; |
4a421c53 AM |
15953 | from = (rel->r_offset |
15954 | + input_section->output_section->vma | |
15955 | + input_section->output_offset); | |
6738c8a7 AM |
15956 | if (!(relocation - from + (1ULL << 33) < 1ULL << 34 |
15957 | && SYMBOL_REFERENCES_LOCAL (info, &h->elf))) | |
15958 | break; | |
15959 | ||
15960 | offset = rel->r_offset; | |
15961 | pinsn = bfd_get_32 (input_bfd, contents + offset); | |
15962 | pinsn <<= 32; | |
15963 | pinsn |= bfd_get_32 (input_bfd, contents + offset + 4); | |
15964 | if ((pinsn & ((-1ULL << 50) | (63ULL << 26))) | |
15965 | != ((1ULL << 58) | (1ULL << 52) | (57ULL << 26) /* pld */)) | |
15966 | break; | |
15967 | ||
15968 | /* Replace with paddi. */ | |
15969 | pinsn += (2ULL << 56) + (14ULL << 26) - (57ULL << 26); | |
15970 | r_type = R_PPC64_PCREL34; | |
15971 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
15972 | bfd_put_32 (input_bfd, pinsn >> 32, contents + offset); | |
15973 | bfd_put_32 (input_bfd, pinsn, contents + offset + 4); | |
15974 | /* Fall through. */ | |
4a421c53 AM |
15975 | |
15976 | case R_PPC64_PCREL34: | |
6738c8a7 AM |
15977 | if (!htab->params->no_pcrel_opt |
15978 | && rel + 1 < relend | |
15979 | && rel[1].r_offset == rel->r_offset | |
15980 | && rel[1].r_info == ELF64_R_INFO (0, R_PPC64_PCREL_OPT) | |
15981 | && SYMBOL_REFERENCES_LOCAL (info, &h->elf)) | |
4a421c53 AM |
15982 | { |
15983 | offset = rel->r_offset; | |
15984 | pinsn = bfd_get_32 (input_bfd, contents + offset); | |
15985 | pinsn <<= 32; | |
15986 | pinsn |= bfd_get_32 (input_bfd, contents + offset + 4); | |
15987 | if ((pinsn & ((-1ULL << 50) | (63ULL << 26))) | |
15988 | == ((1ULL << 58) | (2ULL << 56) | (1ULL << 52) | |
15989 | | (14ULL << 26) /* paddi */)) | |
15990 | { | |
6738c8a7 AM |
15991 | bfd_vma off2 = rel[1].r_addend; |
15992 | if (off2 == 0) | |
15993 | /* zero means next insn. */ | |
15994 | off2 = 8; | |
15995 | off2 += offset; | |
15996 | if (off2 + 4 <= input_section->size) | |
4a421c53 | 15997 | { |
6738c8a7 AM |
15998 | uint64_t pinsn2; |
15999 | bfd_signed_vma addend_off; | |
16000 | pinsn2 = bfd_get_32 (input_bfd, contents + off2); | |
16001 | pinsn2 <<= 32; | |
16002 | if ((pinsn2 & (63ULL << 58)) == 1ULL << 58) | |
4a421c53 | 16003 | { |
6738c8a7 AM |
16004 | if (off2 + 8 > input_section->size) |
16005 | break; | |
16006 | pinsn2 |= bfd_get_32 (input_bfd, | |
16007 | contents + off2 + 4); | |
16008 | } | |
16009 | if (xlate_pcrel_opt (&pinsn, &pinsn2, &addend_off)) | |
16010 | { | |
16011 | addend += addend_off; | |
16012 | rel->r_addend = addend; | |
16013 | bfd_put_32 (input_bfd, pinsn >> 32, | |
16014 | contents + offset); | |
16015 | bfd_put_32 (input_bfd, pinsn, | |
16016 | contents + offset + 4); | |
16017 | bfd_put_32 (input_bfd, pinsn2 >> 32, | |
16018 | contents + off2); | |
4a421c53 | 16019 | if ((pinsn2 & (63ULL << 58)) == 1ULL << 58) |
6738c8a7 AM |
16020 | bfd_put_32 (input_bfd, pinsn2, |
16021 | contents + off2 + 4); | |
4a421c53 AM |
16022 | } |
16023 | } | |
16024 | } | |
16025 | } | |
16026 | break; | |
65f38f15 | 16027 | } |
5bd4f169 | 16028 | |
411e1bfb | 16029 | tls_type = 0; |
23cedd1d | 16030 | save_unresolved_reloc = unresolved_reloc; |
65f38f15 AM |
16031 | switch (r_type) |
16032 | { | |
16033 | default: | |
cf97bcb0 AM |
16034 | /* xgettext:c-format */ |
16035 | _bfd_error_handler (_("%pB: %s unsupported"), | |
16036 | input_bfd, ppc64_elf_howto_table[r_type]->name); | |
5bd4f169 | 16037 | |
65f38f15 | 16038 | bfd_set_error (bfd_error_bad_value); |
b34976b6 | 16039 | ret = FALSE; |
c316a17c | 16040 | goto copy_reloc; |
5bd4f169 | 16041 | |
65f38f15 | 16042 | case R_PPC64_NONE: |
411e1bfb | 16043 | case R_PPC64_TLS: |
727fc41e AM |
16044 | case R_PPC64_TLSGD: |
16045 | case R_PPC64_TLSLD: | |
3b421ab3 | 16046 | case R_PPC64_TOCSAVE: |
04c9666a AM |
16047 | case R_PPC64_GNU_VTINHERIT: |
16048 | case R_PPC64_GNU_VTENTRY: | |
006589cf | 16049 | case R_PPC64_ENTRY: |
4a421c53 | 16050 | case R_PPC64_PCREL_OPT: |
c316a17c | 16051 | goto copy_reloc; |
5bd4f169 AM |
16052 | |
16053 | /* GOT16 relocations. Like an ADDR16 using the symbol's | |
16054 | address in the GOT as relocation value instead of the | |
411e1bfb | 16055 | symbol's value itself. Also, create a GOT entry for the |
5bd4f169 | 16056 | symbol and put the symbol value there. */ |
411e1bfb AM |
16057 | case R_PPC64_GOT_TLSGD16: |
16058 | case R_PPC64_GOT_TLSGD16_LO: | |
16059 | case R_PPC64_GOT_TLSGD16_HI: | |
16060 | case R_PPC64_GOT_TLSGD16_HA: | |
87c69f97 | 16061 | case R_PPC64_GOT_TLSGD_PCREL34: |
951fd09b | 16062 | tls_type = TLS_TLS | TLS_GD; |
411e1bfb AM |
16063 | goto dogot; |
16064 | ||
16065 | case R_PPC64_GOT_TLSLD16: | |
16066 | case R_PPC64_GOT_TLSLD16_LO: | |
16067 | case R_PPC64_GOT_TLSLD16_HI: | |
16068 | case R_PPC64_GOT_TLSLD16_HA: | |
87c69f97 | 16069 | case R_PPC64_GOT_TLSLD_PCREL34: |
951fd09b | 16070 | tls_type = TLS_TLS | TLS_LD; |
411e1bfb AM |
16071 | goto dogot; |
16072 | ||
16073 | case R_PPC64_GOT_TPREL16_DS: | |
16074 | case R_PPC64_GOT_TPREL16_LO_DS: | |
16075 | case R_PPC64_GOT_TPREL16_HI: | |
16076 | case R_PPC64_GOT_TPREL16_HA: | |
87c69f97 | 16077 | case R_PPC64_GOT_TPREL_PCREL34: |
411e1bfb AM |
16078 | tls_type = TLS_TLS | TLS_TPREL; |
16079 | goto dogot; | |
16080 | ||
16081 | case R_PPC64_GOT_DTPREL16_DS: | |
16082 | case R_PPC64_GOT_DTPREL16_LO_DS: | |
16083 | case R_PPC64_GOT_DTPREL16_HI: | |
16084 | case R_PPC64_GOT_DTPREL16_HA: | |
87c69f97 | 16085 | case R_PPC64_GOT_DTPREL_PCREL34: |
411e1bfb AM |
16086 | tls_type = TLS_TLS | TLS_DTPREL; |
16087 | goto dogot; | |
16088 | ||
65f38f15 AM |
16089 | case R_PPC64_GOT16: |
16090 | case R_PPC64_GOT16_LO: | |
16091 | case R_PPC64_GOT16_HI: | |
16092 | case R_PPC64_GOT16_HA: | |
16093 | case R_PPC64_GOT16_DS: | |
16094 | case R_PPC64_GOT16_LO_DS: | |
5663e321 | 16095 | case R_PPC64_GOT_PCREL34: |
411e1bfb | 16096 | dogot: |
5bd4f169 AM |
16097 | { |
16098 | /* Relocation is to the entry for this symbol in the global | |
16099 | offset table. */ | |
e717da7e | 16100 | asection *got; |
d881513a | 16101 | bfd_vma *offp; |
5bd4f169 | 16102 | bfd_vma off; |
d881513a | 16103 | unsigned long indx = 0; |
927be08e | 16104 | struct got_entry *ent; |
65f38f15 | 16105 | |
d881513a | 16106 | if (tls_type == (TLS_TLS | TLS_LD) |
f749f26e | 16107 | && SYMBOL_REFERENCES_LOCAL (info, &h->elf)) |
927be08e | 16108 | ent = ppc64_tlsld_got (input_bfd); |
411e1bfb | 16109 | else |
5bd4f169 | 16110 | { |
d881513a AM |
16111 | if (h != NULL) |
16112 | { | |
f0158f44 AM |
16113 | if (!htab->elf.dynamic_sections_created |
16114 | || h->elf.dynindx == -1 | |
16115 | || SYMBOL_REFERENCES_LOCAL (info, &h->elf) | |
21d68fcd | 16116 | || UNDEFWEAK_NO_DYNAMIC_RELOC (info, &h->elf)) |
d881513a AM |
16117 | /* This is actually a static link, or it is a |
16118 | -Bsymbolic link and the symbol is defined | |
16119 | locally, or the symbol was forced to be local | |
16120 | because of a version file. */ | |
16121 | ; | |
16122 | else | |
16123 | { | |
039b3fef | 16124 | indx = h->elf.dynindx; |
d881513a AM |
16125 | unresolved_reloc = FALSE; |
16126 | } | |
039b3fef | 16127 | ent = h->elf.got.glist; |
d881513a | 16128 | } |
411e1bfb | 16129 | else |
5bd4f169 | 16130 | { |
d881513a AM |
16131 | if (local_got_ents == NULL) |
16132 | abort (); | |
16133 | ent = local_got_ents[r_symndx]; | |
5bd4f169 | 16134 | } |
d881513a AM |
16135 | |
16136 | for (; ent != NULL; ent = ent->next) | |
133a1f60 | 16137 | if (ent->addend == orig_rel.r_addend |
e717da7e | 16138 | && ent->owner == input_bfd |
d881513a AM |
16139 | && ent->tls_type == tls_type) |
16140 | break; | |
5bd4f169 | 16141 | } |
411e1bfb | 16142 | |
927be08e AM |
16143 | if (ent == NULL) |
16144 | abort (); | |
16145 | if (ent->is_indirect) | |
16146 | ent = ent->got.ent; | |
16147 | offp = &ent->got.offset; | |
16148 | got = ppc64_elf_tdata (ent->owner)->got; | |
e717da7e AM |
16149 | if (got == NULL) |
16150 | abort (); | |
16151 | ||
411e1bfb AM |
16152 | /* The offset must always be a multiple of 8. We use the |
16153 | least significant bit to record whether we have already | |
16154 | processed this entry. */ | |
d881513a | 16155 | off = *offp; |
411e1bfb AM |
16156 | if ((off & 1) != 0) |
16157 | off &= ~1; | |
5bd4f169 AM |
16158 | else |
16159 | { | |
411e1bfb AM |
16160 | /* Generate relocs for the dynamic linker, except in |
16161 | the case of TLSLD where we'll use one entry per | |
16162 | module. */ | |
25f23106 AM |
16163 | asection *relgot; |
16164 | bfd_boolean ifunc; | |
e717da7e | 16165 | |
d881513a | 16166 | *offp = off | 1; |
25f23106 AM |
16167 | relgot = NULL; |
16168 | ifunc = (h != NULL | |
16169 | ? h->elf.type == STT_GNU_IFUNC | |
16170 | : ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC); | |
19e08130 | 16171 | if (ifunc) |
82e66161 AM |
16172 | { |
16173 | relgot = htab->elf.irelplt; | |
efb2a7b4 | 16174 | if (indx == 0 || is_static_defined (&h->elf)) |
cebd6b8a | 16175 | htab->elf.ifunc_resolvers = TRUE; |
82e66161 | 16176 | } |
f0158f44 AM |
16177 | else if (indx != 0 |
16178 | || (bfd_link_pic (info) | |
16179 | && (h == NULL | |
f749f26e AM |
16180 | || !UNDEFWEAK_NO_DYNAMIC_RELOC (info, &h->elf)) |
16181 | && !(tls_type != 0 | |
f15d0b54 AM |
16182 | && bfd_link_executable (info) |
16183 | && SYMBOL_REFERENCES_LOCAL (info, &h->elf)))) | |
19e08130 | 16184 | relgot = ppc64_elf_tdata (ent->owner)->relgot; |
25f23106 | 16185 | if (relgot != NULL) |
5bd4f169 | 16186 | { |
e717da7e AM |
16187 | outrel.r_offset = (got->output_section->vma |
16188 | + got->output_offset | |
411e1bfb | 16189 | + off); |
133a1f60 | 16190 | outrel.r_addend = orig_rel.r_addend; |
d881513a | 16191 | if (tls_type & (TLS_LD | TLS_GD)) |
5bd4f169 | 16192 | { |
411e1bfb | 16193 | outrel.r_addend = 0; |
e515b051 | 16194 | outrel.r_info = ELF64_R_INFO (indx, R_PPC64_DTPMOD64); |
d881513a AM |
16195 | if (tls_type == (TLS_TLS | TLS_GD)) |
16196 | { | |
e717da7e AM |
16197 | loc = relgot->contents; |
16198 | loc += (relgot->reloc_count++ | |
d881513a AM |
16199 | * sizeof (Elf64_External_Rela)); |
16200 | bfd_elf64_swap_reloca_out (output_bfd, | |
16201 | &outrel, loc); | |
e515b051 | 16202 | outrel.r_offset += 8; |
133a1f60 | 16203 | outrel.r_addend = orig_rel.r_addend; |
d881513a AM |
16204 | outrel.r_info |
16205 | = ELF64_R_INFO (indx, R_PPC64_DTPREL64); | |
d881513a | 16206 | } |
411e1bfb | 16207 | } |
951fd09b | 16208 | else if (tls_type == (TLS_TLS | TLS_DTPREL)) |
411e1bfb | 16209 | outrel.r_info = ELF64_R_INFO (indx, R_PPC64_DTPREL64); |
951fd09b | 16210 | else if (tls_type == (TLS_TLS | TLS_TPREL)) |
411e1bfb | 16211 | outrel.r_info = ELF64_R_INFO (indx, R_PPC64_TPREL64); |
25f23106 AM |
16212 | else if (indx != 0) |
16213 | outrel.r_info = ELF64_R_INFO (indx, R_PPC64_GLOB_DAT); | |
16214 | else | |
81407a69 | 16215 | { |
25f23106 AM |
16216 | if (ifunc) |
16217 | outrel.r_info = ELF64_R_INFO (0, R_PPC64_IRELATIVE); | |
16218 | else | |
16219 | outrel.r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE); | |
81407a69 AM |
16220 | |
16221 | /* Write the .got section contents for the sake | |
16222 | of prelink. */ | |
e717da7e | 16223 | loc = got->contents + off; |
23fbd6fa JJ |
16224 | bfd_put_64 (output_bfd, outrel.r_addend + relocation, |
16225 | loc); | |
81407a69 | 16226 | } |
81407a69 AM |
16227 | |
16228 | if (indx == 0 && tls_type != (TLS_TLS | TLS_LD)) | |
e515b051 AM |
16229 | { |
16230 | outrel.r_addend += relocation; | |
16231 | if (tls_type & (TLS_GD | TLS_DTPREL | TLS_TPREL)) | |
989f9879 AM |
16232 | { |
16233 | if (htab->elf.tls_sec == NULL) | |
16234 | outrel.r_addend = 0; | |
16235 | else | |
16236 | outrel.r_addend -= htab->elf.tls_sec->vma; | |
16237 | } | |
e515b051 | 16238 | } |
e717da7e AM |
16239 | loc = relgot->contents; |
16240 | loc += (relgot->reloc_count++ | |
411e1bfb AM |
16241 | * sizeof (Elf64_External_Rela)); |
16242 | bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc); | |
16243 | } | |
16244 | ||
ad8e1ba5 | 16245 | /* Init the .got section contents here if we're not |
81407a69 | 16246 | emitting a reloc. */ |
d881513a | 16247 | else |
411e1bfb | 16248 | { |
133a1f60 | 16249 | relocation += orig_rel.r_addend; |
f0158f44 | 16250 | if (tls_type != 0) |
411e1bfb | 16251 | { |
989f9879 AM |
16252 | if (htab->elf.tls_sec == NULL) |
16253 | relocation = 0; | |
16254 | else | |
16255 | { | |
f0158f44 AM |
16256 | if (tls_type & TLS_LD) |
16257 | relocation = 0; | |
16258 | else | |
16259 | relocation -= htab->elf.tls_sec->vma + DTP_OFFSET; | |
676ee2b5 | 16260 | if (tls_type & TLS_TPREL) |
989f9879 AM |
16261 | relocation += DTP_OFFSET - TP_OFFSET; |
16262 | } | |
5bd4f169 | 16263 | |
f0158f44 | 16264 | if (tls_type & (TLS_GD | TLS_LD)) |
7b609f53 AM |
16265 | { |
16266 | bfd_put_64 (output_bfd, relocation, | |
e717da7e | 16267 | got->contents + off + 8); |
676ee2b5 | 16268 | relocation = 1; |
7b609f53 | 16269 | } |
411e1bfb AM |
16270 | } |
16271 | bfd_put_64 (output_bfd, relocation, | |
e717da7e | 16272 | got->contents + off); |
5bd4f169 AM |
16273 | } |
16274 | } | |
16275 | ||
65f38f15 AM |
16276 | if (off >= (bfd_vma) -2) |
16277 | abort (); | |
16278 | ||
bf102f86 | 16279 | relocation = got->output_section->vma + got->output_offset + off; |
133a1f60 | 16280 | addend = 0; |
c213164a | 16281 | if (!(r_type == R_PPC64_GOT_PCREL34 |
87c69f97 AM |
16282 | || r_type == R_PPC64_GOT_TLSGD_PCREL34 |
16283 | || r_type == R_PPC64_GOT_TLSLD_PCREL34 | |
16284 | || r_type == R_PPC64_GOT_TPREL_PCREL34 | |
16285 | || r_type == R_PPC64_GOT_DTPREL_PCREL34)) | |
5663e321 | 16286 | addend = -(TOCstart + htab->sec_info[input_section->id].toc_off); |
5bd4f169 | 16287 | } |
65f38f15 AM |
16288 | break; |
16289 | ||
16290 | case R_PPC64_PLT16_HA: | |
16291 | case R_PPC64_PLT16_HI: | |
16292 | case R_PPC64_PLT16_LO: | |
08be3224 | 16293 | case R_PPC64_PLT16_LO_DS: |
5663e321 AM |
16294 | case R_PPC64_PLT_PCREL34: |
16295 | case R_PPC64_PLT_PCREL34_NOTOC: | |
65f38f15 AM |
16296 | case R_PPC64_PLT32: |
16297 | case R_PPC64_PLT64: | |
23cedd1d | 16298 | case R_PPC64_PLTSEQ: |
5663e321 | 16299 | case R_PPC64_PLTSEQ_NOTOC: |
23cedd1d | 16300 | case R_PPC64_PLTCALL: |
5663e321 | 16301 | case R_PPC64_PLTCALL_NOTOC: |
65f38f15 AM |
16302 | /* Relocation is to the entry for this symbol in the |
16303 | procedure linkage table. */ | |
23cedd1d | 16304 | unresolved_reloc = TRUE; |
cbf95972 AM |
16305 | { |
16306 | struct plt_entry **plt_list = NULL; | |
16307 | if (h != NULL) | |
16308 | plt_list = &h->elf.plt.plist; | |
16309 | else if (local_got_ents != NULL) | |
16310 | { | |
16311 | struct plt_entry **local_plt = (struct plt_entry **) | |
16312 | (local_got_ents + symtab_hdr->sh_info); | |
2d7ad24e | 16313 | plt_list = local_plt + r_symndx; |
cbf95972 AM |
16314 | } |
16315 | if (plt_list) | |
16316 | { | |
16317 | struct plt_entry *ent; | |
65f38f15 | 16318 | |
cbf95972 AM |
16319 | for (ent = *plt_list; ent != NULL; ent = ent->next) |
16320 | if (ent->plt.offset != (bfd_vma) -1 | |
133a1f60 | 16321 | && ent->addend == orig_rel.r_addend) |
cbf95972 AM |
16322 | { |
16323 | asection *plt; | |
08be3224 | 16324 | bfd_vma got; |
cbf95972 AM |
16325 | |
16326 | plt = htab->elf.splt; | |
16327 | if (!htab->elf.dynamic_sections_created | |
16328 | || h == NULL | |
16329 | || h->elf.dynindx == -1) | |
2d7ad24e AM |
16330 | { |
16331 | if (h != NULL | |
16332 | ? h->elf.type == STT_GNU_IFUNC | |
16333 | : ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC) | |
16334 | plt = htab->elf.iplt; | |
16335 | else | |
16336 | plt = htab->pltlocal; | |
16337 | } | |
16338 | relocation = (plt->output_section->vma | |
16339 | + plt->output_offset | |
16340 | + ent->plt.offset); | |
08be3224 | 16341 | if (r_type == R_PPC64_PLT16_HA |
2cdcc330 AM |
16342 | || r_type == R_PPC64_PLT16_HI |
16343 | || r_type == R_PPC64_PLT16_LO | |
16344 | || r_type == R_PPC64_PLT16_LO_DS) | |
08be3224 AM |
16345 | { |
16346 | got = (elf_gp (output_bfd) | |
16347 | + htab->sec_info[input_section->id].toc_off); | |
16348 | relocation -= got; | |
16349 | } | |
133a1f60 | 16350 | addend = 0; |
cbf95972 AM |
16351 | unresolved_reloc = FALSE; |
16352 | break; | |
16353 | } | |
16354 | } | |
16355 | } | |
65f38f15 | 16356 | break; |
5bd4f169 | 16357 | |
0b13192e AM |
16358 | case R_PPC64_TOC: |
16359 | /* Relocation value is TOC base. */ | |
16360 | relocation = TOCstart; | |
cf35638d | 16361 | if (r_symndx == STN_UNDEF) |
6f20ed8a | 16362 | relocation += htab->sec_info[input_section->id].toc_off; |
8517fae7 AM |
16363 | else if (unresolved_reloc) |
16364 | ; | |
6f20ed8a AM |
16365 | else if (sec != NULL && sec->id < htab->sec_info_arr_size) |
16366 | relocation += htab->sec_info[sec->id].toc_off; | |
0b13192e AM |
16367 | else |
16368 | unresolved_reloc = TRUE; | |
ab96bf03 | 16369 | goto dodyn; |
0b13192e | 16370 | |
5bd4f169 AM |
16371 | /* TOC16 relocs. We want the offset relative to the TOC base, |
16372 | which is the address of the start of the TOC plus 0x8000. | |
16373 | The TOC consists of sections .got, .toc, .tocbss, and .plt, | |
16374 | in this order. */ | |
65f38f15 AM |
16375 | case R_PPC64_TOC16: |
16376 | case R_PPC64_TOC16_LO: | |
16377 | case R_PPC64_TOC16_HI: | |
16378 | case R_PPC64_TOC16_DS: | |
16379 | case R_PPC64_TOC16_LO_DS: | |
16380 | case R_PPC64_TOC16_HA: | |
6f20ed8a | 16381 | addend -= TOCstart + htab->sec_info[input_section->id].toc_off; |
1bdd8fac AM |
16382 | if (h != NULL) |
16383 | goto dodyn; | |
5bd4f169 AM |
16384 | break; |
16385 | ||
16386 | /* Relocate against the beginning of the section. */ | |
65f38f15 AM |
16387 | case R_PPC64_SECTOFF: |
16388 | case R_PPC64_SECTOFF_LO: | |
16389 | case R_PPC64_SECTOFF_HI: | |
16390 | case R_PPC64_SECTOFF_DS: | |
16391 | case R_PPC64_SECTOFF_LO_DS: | |
16392 | case R_PPC64_SECTOFF_HA: | |
4ce794b7 | 16393 | if (sec != NULL) |
65f38f15 | 16394 | addend -= sec->output_section->vma; |
5bd4f169 AM |
16395 | break; |
16396 | ||
25f23106 AM |
16397 | case R_PPC64_REL16: |
16398 | case R_PPC64_REL16_LO: | |
16399 | case R_PPC64_REL16_HI: | |
16400 | case R_PPC64_REL16_HA: | |
4a969973 AM |
16401 | case R_PPC64_REL16_HIGH: |
16402 | case R_PPC64_REL16_HIGHA: | |
16403 | case R_PPC64_REL16_HIGHER: | |
16404 | case R_PPC64_REL16_HIGHERA: | |
16405 | case R_PPC64_REL16_HIGHEST: | |
16406 | case R_PPC64_REL16_HIGHESTA: | |
5663e321 AM |
16407 | case R_PPC64_REL16_HIGHER34: |
16408 | case R_PPC64_REL16_HIGHERA34: | |
16409 | case R_PPC64_REL16_HIGHEST34: | |
16410 | case R_PPC64_REL16_HIGHESTA34: | |
a680de9a | 16411 | case R_PPC64_REL16DX_HA: |
721956f4 AM |
16412 | case R_PPC64_REL14: |
16413 | case R_PPC64_REL14_BRNTAKEN: | |
16414 | case R_PPC64_REL14_BRTAKEN: | |
5d1634d7 | 16415 | case R_PPC64_REL24: |
05d0e962 | 16416 | case R_PPC64_REL24_NOTOC: |
5663e321 AM |
16417 | case R_PPC64_PCREL34: |
16418 | case R_PPC64_PCREL28: | |
5d1634d7 AM |
16419 | break; |
16420 | ||
411e1bfb AM |
16421 | case R_PPC64_TPREL16: |
16422 | case R_PPC64_TPREL16_LO: | |
16423 | case R_PPC64_TPREL16_HI: | |
16424 | case R_PPC64_TPREL16_HA: | |
16425 | case R_PPC64_TPREL16_DS: | |
16426 | case R_PPC64_TPREL16_LO_DS: | |
f9c6b907 AM |
16427 | case R_PPC64_TPREL16_HIGH: |
16428 | case R_PPC64_TPREL16_HIGHA: | |
411e1bfb AM |
16429 | case R_PPC64_TPREL16_HIGHER: |
16430 | case R_PPC64_TPREL16_HIGHERA: | |
16431 | case R_PPC64_TPREL16_HIGHEST: | |
16432 | case R_PPC64_TPREL16_HIGHESTA: | |
c213164a | 16433 | case R_PPC64_TPREL34: |
766bc656 AM |
16434 | if (h != NULL |
16435 | && h->elf.root.type == bfd_link_hash_undefweak | |
16436 | && h->elf.dynindx == -1) | |
16437 | { | |
16438 | /* Make this relocation against an undefined weak symbol | |
16439 | resolve to zero. This is really just a tweak, since | |
16440 | code using weak externs ought to check that they are | |
16441 | defined before using them. */ | |
16442 | bfd_byte *p = contents + rel->r_offset - d_offset; | |
16443 | ||
95f0d0d2 | 16444 | insn = bfd_get_32 (input_bfd, p); |
766bc656 AM |
16445 | insn = _bfd_elf_ppc_at_tprel_transform (insn, 13); |
16446 | if (insn != 0) | |
95f0d0d2 | 16447 | bfd_put_32 (input_bfd, insn, p); |
766bc656 AM |
16448 | break; |
16449 | } | |
989f9879 AM |
16450 | if (htab->elf.tls_sec != NULL) |
16451 | addend -= htab->elf.tls_sec->vma + TP_OFFSET; | |
7c8bbca5 AM |
16452 | /* The TPREL16 relocs shouldn't really be used in shared |
16453 | libs or with non-local symbols as that will result in | |
16454 | DT_TEXTREL being set, but support them anyway. */ | |
16455 | goto dodyn; | |
411e1bfb AM |
16456 | |
16457 | case R_PPC64_DTPREL16: | |
16458 | case R_PPC64_DTPREL16_LO: | |
16459 | case R_PPC64_DTPREL16_HI: | |
16460 | case R_PPC64_DTPREL16_HA: | |
16461 | case R_PPC64_DTPREL16_DS: | |
16462 | case R_PPC64_DTPREL16_LO_DS: | |
f9c6b907 AM |
16463 | case R_PPC64_DTPREL16_HIGH: |
16464 | case R_PPC64_DTPREL16_HIGHA: | |
411e1bfb AM |
16465 | case R_PPC64_DTPREL16_HIGHER: |
16466 | case R_PPC64_DTPREL16_HIGHERA: | |
16467 | case R_PPC64_DTPREL16_HIGHEST: | |
16468 | case R_PPC64_DTPREL16_HIGHESTA: | |
c213164a | 16469 | case R_PPC64_DTPREL34: |
989f9879 AM |
16470 | if (htab->elf.tls_sec != NULL) |
16471 | addend -= htab->elf.tls_sec->vma + DTP_OFFSET; | |
411e1bfb AM |
16472 | break; |
16473 | ||
45965137 AM |
16474 | case R_PPC64_ADDR64_LOCAL: |
16475 | addend += PPC64_LOCAL_ENTRY_OFFSET (h != NULL | |
16476 | ? h->elf.other | |
16477 | : sym->st_other); | |
16478 | break; | |
16479 | ||
e515b051 AM |
16480 | case R_PPC64_DTPMOD64: |
16481 | relocation = 1; | |
16482 | addend = 0; | |
16483 | goto dodyn; | |
16484 | ||
411e1bfb | 16485 | case R_PPC64_TPREL64: |
989f9879 AM |
16486 | if (htab->elf.tls_sec != NULL) |
16487 | addend -= htab->elf.tls_sec->vma + TP_OFFSET; | |
411e1bfb AM |
16488 | goto dodyn; |
16489 | ||
16490 | case R_PPC64_DTPREL64: | |
989f9879 AM |
16491 | if (htab->elf.tls_sec != NULL) |
16492 | addend -= htab->elf.tls_sec->vma + DTP_OFFSET; | |
1a0670f3 | 16493 | /* Fall through. */ |
411e1bfb | 16494 | |
65f38f15 AM |
16495 | /* Relocations that may need to be propagated if this is a |
16496 | dynamic object. */ | |
04c9666a | 16497 | case R_PPC64_REL30: |
65f38f15 AM |
16498 | case R_PPC64_REL32: |
16499 | case R_PPC64_REL64: | |
16500 | case R_PPC64_ADDR14: | |
16501 | case R_PPC64_ADDR14_BRNTAKEN: | |
16502 | case R_PPC64_ADDR14_BRTAKEN: | |
16503 | case R_PPC64_ADDR16: | |
16504 | case R_PPC64_ADDR16_DS: | |
16505 | case R_PPC64_ADDR16_HA: | |
16506 | case R_PPC64_ADDR16_HI: | |
f9c6b907 AM |
16507 | case R_PPC64_ADDR16_HIGH: |
16508 | case R_PPC64_ADDR16_HIGHA: | |
65f38f15 AM |
16509 | case R_PPC64_ADDR16_HIGHER: |
16510 | case R_PPC64_ADDR16_HIGHERA: | |
16511 | case R_PPC64_ADDR16_HIGHEST: | |
16512 | case R_PPC64_ADDR16_HIGHESTA: | |
16513 | case R_PPC64_ADDR16_LO: | |
16514 | case R_PPC64_ADDR16_LO_DS: | |
5663e321 AM |
16515 | case R_PPC64_ADDR16_HIGHER34: |
16516 | case R_PPC64_ADDR16_HIGHERA34: | |
16517 | case R_PPC64_ADDR16_HIGHEST34: | |
16518 | case R_PPC64_ADDR16_HIGHESTA34: | |
65f38f15 | 16519 | case R_PPC64_ADDR24: |
65f38f15 AM |
16520 | case R_PPC64_ADDR32: |
16521 | case R_PPC64_ADDR64: | |
16522 | case R_PPC64_UADDR16: | |
16523 | case R_PPC64_UADDR32: | |
16524 | case R_PPC64_UADDR64: | |
5663e321 AM |
16525 | case R_PPC64_D34: |
16526 | case R_PPC64_D34_LO: | |
16527 | case R_PPC64_D34_HI30: | |
16528 | case R_PPC64_D34_HA30: | |
16529 | case R_PPC64_D28: | |
411e1bfb | 16530 | dodyn: |
5d1634d7 | 16531 | if ((input_section->flags & SEC_ALLOC) == 0) |
ec338859 AM |
16532 | break; |
16533 | ||
41bd81ab AM |
16534 | if (NO_OPD_RELOCS && is_opd) |
16535 | break; | |
16536 | ||
8a9e8e72 | 16537 | if (bfd_link_pic (info) |
b1b07054 | 16538 | ? ((h == NULL |
190eb1dd | 16539 | || h->elf.dyn_relocs != NULL) |
b1b07054 AM |
16540 | && ((h != NULL && pc_dynrelocs (h)) |
16541 | || must_be_dyn_reloc (info, r_type))) | |
8a9e8e72 | 16542 | : (h != NULL |
190eb1dd | 16543 | ? h->elf.dyn_relocs != NULL |
d311bc8b | 16544 | : ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC)) |
65f38f15 | 16545 | { |
b34976b6 | 16546 | bfd_boolean skip, relocate; |
65f38f15 | 16547 | asection *sreloc; |
1cf1f670 | 16548 | bfd_vma out_off; |
82e66161 | 16549 | long indx = 0; |
65f38f15 AM |
16550 | |
16551 | /* When generating a dynamic object, these relocations | |
16552 | are copied into the output file to be resolved at run | |
16553 | time. */ | |
16554 | ||
b34976b6 AM |
16555 | skip = FALSE; |
16556 | relocate = FALSE; | |
65f38f15 | 16557 | |
1cf1f670 AM |
16558 | out_off = _bfd_elf_section_offset (output_bfd, info, |
16559 | input_section, rel->r_offset); | |
16560 | if (out_off == (bfd_vma) -1) | |
b34976b6 | 16561 | skip = TRUE; |
1cf1f670 | 16562 | else if (out_off == (bfd_vma) -2) |
b34976b6 | 16563 | skip = TRUE, relocate = TRUE; |
1cf1f670 AM |
16564 | out_off += (input_section->output_section->vma |
16565 | + input_section->output_offset); | |
16566 | outrel.r_offset = out_off; | |
411e1bfb | 16567 | outrel.r_addend = rel->r_addend; |
65f38f15 | 16568 | |
1cf1f670 AM |
16569 | /* Optimize unaligned reloc use. */ |
16570 | if ((r_type == R_PPC64_ADDR64 && (out_off & 7) != 0) | |
16571 | || (r_type == R_PPC64_UADDR64 && (out_off & 7) == 0)) | |
16572 | r_type ^= R_PPC64_ADDR64 ^ R_PPC64_UADDR64; | |
16573 | else if ((r_type == R_PPC64_ADDR32 && (out_off & 3) != 0) | |
16574 | || (r_type == R_PPC64_UADDR32 && (out_off & 3) == 0)) | |
16575 | r_type ^= R_PPC64_ADDR32 ^ R_PPC64_UADDR32; | |
16576 | else if ((r_type == R_PPC64_ADDR16 && (out_off & 1) != 0) | |
16577 | || (r_type == R_PPC64_UADDR16 && (out_off & 1) == 0)) | |
16578 | r_type ^= R_PPC64_ADDR16 ^ R_PPC64_UADDR16; | |
16579 | ||
65f38f15 | 16580 | if (skip) |
0bb2d96a | 16581 | memset (&outrel, 0, sizeof outrel); |
afe397ea | 16582 | else if (!SYMBOL_REFERENCES_LOCAL (info, &h->elf) |
0b13192e AM |
16583 | && !is_opd |
16584 | && r_type != R_PPC64_TOC) | |
14acf4dc | 16585 | { |
82e66161 AM |
16586 | indx = h->elf.dynindx; |
16587 | BFD_ASSERT (indx != -1); | |
16588 | outrel.r_info = ELF64_R_INFO (indx, r_type); | |
14acf4dc | 16589 | } |
65f38f15 AM |
16590 | else |
16591 | { | |
41bd81ab AM |
16592 | /* This symbol is local, or marked to become local, |
16593 | or this is an opd section reloc which must point | |
16594 | at a local function. */ | |
65f38f15 | 16595 | outrel.r_addend += relocation; |
e86ce104 | 16596 | if (r_type == R_PPC64_ADDR64 || r_type == R_PPC64_TOC) |
65f38f15 | 16597 | { |
3fad3c7c | 16598 | if (is_opd && h != NULL) |
afbe61cf AM |
16599 | { |
16600 | /* Lie about opd entries. This case occurs | |
16601 | when building shared libraries and we | |
16602 | reference a function in another shared | |
3fad3c7c AM |
16603 | lib. The same thing happens for a weak |
16604 | definition in an application that's | |
16605 | overridden by a strong definition in a | |
16606 | shared lib. (I believe this is a generic | |
16607 | bug in binutils handling of weak syms.) | |
16608 | In these cases we won't use the opd | |
1e2f5b6e | 16609 | entry in this lib. */ |
b34976b6 | 16610 | unresolved_reloc = FALSE; |
afbe61cf | 16611 | } |
25f23106 AM |
16612 | if (!is_opd |
16613 | && r_type == R_PPC64_ADDR64 | |
16614 | && (h != NULL | |
16615 | ? h->elf.type == STT_GNU_IFUNC | |
16616 | : ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC)) | |
16617 | outrel.r_info = ELF64_R_INFO (0, R_PPC64_IRELATIVE); | |
16618 | else | |
16619 | { | |
16620 | outrel.r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE); | |
81407a69 | 16621 | |
25f23106 AM |
16622 | /* We need to relocate .opd contents for ld.so. |
16623 | Prelink also wants simple and consistent rules | |
16624 | for relocs. This make all RELATIVE relocs have | |
16625 | *r_offset equal to r_addend. */ | |
16626 | relocate = TRUE; | |
16627 | } | |
65f38f15 AM |
16628 | } |
16629 | else | |
16630 | { | |
25f23106 AM |
16631 | if (h != NULL |
16632 | ? h->elf.type == STT_GNU_IFUNC | |
16633 | : ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC) | |
16634 | { | |
25f53a85 | 16635 | info->callbacks->einfo |
695344c0 | 16636 | /* xgettext:c-format */ |
174d0a74 | 16637 | (_("%H: %s for indirect " |
c1c8c1ef | 16638 | "function `%pT' unsupported\n"), |
25f53a85 | 16639 | input_bfd, input_section, rel->r_offset, |
25f23106 AM |
16640 | ppc64_elf_howto_table[r_type]->name, |
16641 | sym_name); | |
16642 | ret = FALSE; | |
16643 | } | |
cf35638d | 16644 | else if (r_symndx == STN_UNDEF || bfd_is_abs_section (sec)) |
65f38f15 AM |
16645 | ; |
16646 | else if (sec == NULL || sec->owner == NULL) | |
16647 | { | |
16648 | bfd_set_error (bfd_error_bad_value); | |
b34976b6 | 16649 | return FALSE; |
65f38f15 AM |
16650 | } |
16651 | else | |
16652 | { | |
f26a3287 | 16653 | asection *osec = sec->output_section; |
65f38f15 | 16654 | |
f26a3287 AM |
16655 | if ((osec->flags & SEC_THREAD_LOCAL) != 0) |
16656 | { | |
16657 | /* TLS symbol values are relative to the | |
16658 | TLS segment. Dynamic relocations for | |
16659 | local TLS symbols therefore can't be | |
16660 | reduced to a relocation against their | |
16661 | section symbol because it holds the | |
16662 | address of the section, not a value | |
16663 | relative to the TLS segment. We could | |
16664 | change the .tdata dynamic section symbol | |
16665 | to be zero value but STN_UNDEF works | |
16666 | and is used elsewhere, eg. for TPREL64 | |
16667 | GOT relocs against local TLS symbols. */ | |
16668 | osec = htab->elf.tls_sec; | |
16669 | indx = 0; | |
16670 | } | |
16671 | else | |
74541ad4 | 16672 | { |
74541ad4 | 16673 | indx = elf_section_data (osec)->dynindx; |
f26a3287 AM |
16674 | if (indx == 0) |
16675 | { | |
16676 | if ((osec->flags & SEC_READONLY) == 0 | |
16677 | && htab->elf.data_index_section != NULL) | |
16678 | osec = htab->elf.data_index_section; | |
16679 | else | |
16680 | osec = htab->elf.text_index_section; | |
16681 | indx = elf_section_data (osec)->dynindx; | |
16682 | } | |
16683 | BFD_ASSERT (indx != 0); | |
74541ad4 | 16684 | } |
74541ad4 | 16685 | |
65f38f15 AM |
16686 | /* We are turning this relocation into one |
16687 | against a section symbol, so subtract out | |
16688 | the output section's address but not the | |
16689 | offset of the input section in the output | |
16690 | section. */ | |
16691 | outrel.r_addend -= osec->vma; | |
16692 | } | |
16693 | ||
16694 | outrel.r_info = ELF64_R_INFO (indx, r_type); | |
16695 | } | |
16696 | } | |
16697 | ||
16698 | sreloc = elf_section_data (input_section)->sreloc; | |
19e08130 AM |
16699 | if (h != NULL |
16700 | ? h->elf.type == STT_GNU_IFUNC | |
16701 | : ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC) | |
82e66161 AM |
16702 | { |
16703 | sreloc = htab->elf.irelplt; | |
efb2a7b4 | 16704 | if (indx == 0 || is_static_defined (&h->elf)) |
cebd6b8a | 16705 | htab->elf.ifunc_resolvers = TRUE; |
82e66161 | 16706 | } |
65f38f15 AM |
16707 | if (sreloc == NULL) |
16708 | abort (); | |
16709 | ||
dfbb6ac9 AM |
16710 | if (sreloc->reloc_count * sizeof (Elf64_External_Rela) |
16711 | >= sreloc->size) | |
16712 | abort (); | |
947216bf AM |
16713 | loc = sreloc->contents; |
16714 | loc += sreloc->reloc_count++ * sizeof (Elf64_External_Rela); | |
65f38f15 AM |
16715 | bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc); |
16716 | ||
e59a1001 AM |
16717 | if (!warned_dynamic |
16718 | && !ppc64_glibc_dynamic_reloc (ELF64_R_TYPE (outrel.r_info))) | |
16719 | { | |
16720 | info->callbacks->einfo | |
16721 | /* xgettext:c-format */ | |
16722 | (_("%X%P: %pB: %s against %pT " | |
16723 | "is not supported by glibc as a dynamic relocation\n"), | |
16724 | input_bfd, | |
16725 | ppc64_elf_howto_table[ELF64_R_TYPE (outrel.r_info)]->name, | |
16726 | sym_name); | |
16727 | warned_dynamic = TRUE; | |
16728 | } | |
16729 | ||
65f38f15 AM |
16730 | /* If this reloc is against an external symbol, it will |
16731 | be computed at runtime, so there's no need to do | |
81407a69 AM |
16732 | anything now. However, for the sake of prelink ensure |
16733 | that the section contents are a known value. */ | |
2cdcc330 | 16734 | if (!relocate) |
81407a69 AM |
16735 | { |
16736 | unresolved_reloc = FALSE; | |
16737 | /* The value chosen here is quite arbitrary as ld.so | |
16738 | ignores section contents except for the special | |
16739 | case of .opd where the contents might be accessed | |
16740 | before relocation. Choose zero, as that won't | |
16741 | cause reloc overflow. */ | |
16742 | relocation = 0; | |
16743 | addend = 0; | |
16744 | /* Use *r_offset == r_addend for R_PPC64_ADDR64 relocs | |
16745 | to improve backward compatibility with older | |
16746 | versions of ld. */ | |
16747 | if (r_type == R_PPC64_ADDR64) | |
16748 | addend = outrel.r_addend; | |
16749 | /* Adjust pc_relative relocs to have zero in *r_offset. */ | |
4ce794b7 | 16750 | else if (ppc64_elf_howto_table[r_type]->pc_relative) |
f0158f44 | 16751 | addend = outrel.r_offset; |
81407a69 | 16752 | } |
65f38f15 | 16753 | } |
5bd4f169 AM |
16754 | break; |
16755 | ||
65f38f15 AM |
16756 | case R_PPC64_COPY: |
16757 | case R_PPC64_GLOB_DAT: | |
16758 | case R_PPC64_JMP_SLOT: | |
25f23106 | 16759 | case R_PPC64_JMP_IREL: |
65f38f15 AM |
16760 | case R_PPC64_RELATIVE: |
16761 | /* We shouldn't ever see these dynamic relocs in relocatable | |
16762 | files. */ | |
ae9a127f | 16763 | /* Fall through. */ |
65f38f15 AM |
16764 | |
16765 | case R_PPC64_PLTGOT16: | |
16766 | case R_PPC64_PLTGOT16_DS: | |
16767 | case R_PPC64_PLTGOT16_HA: | |
16768 | case R_PPC64_PLTGOT16_HI: | |
16769 | case R_PPC64_PLTGOT16_LO: | |
16770 | case R_PPC64_PLTGOT16_LO_DS: | |
16771 | case R_PPC64_PLTREL32: | |
16772 | case R_PPC64_PLTREL64: | |
16773 | /* These ones haven't been implemented yet. */ | |
16774 | ||
25f53a85 | 16775 | info->callbacks->einfo |
695344c0 | 16776 | /* xgettext:c-format */ |
c1c8c1ef | 16777 | (_("%P: %pB: %s is not supported for `%pT'\n"), |
d003868e | 16778 | input_bfd, |
4ce794b7 | 16779 | ppc64_elf_howto_table[r_type]->name, sym_name); |
5bd4f169 AM |
16780 | |
16781 | bfd_set_error (bfd_error_invalid_operation); | |
b34976b6 | 16782 | ret = FALSE; |
c316a17c | 16783 | goto copy_reloc; |
65f38f15 | 16784 | } |
5bd4f169 | 16785 | |
67f0cbdb AM |
16786 | /* Multi-instruction sequences that access the TOC can be |
16787 | optimized, eg. addis ra,r2,0; addi rb,ra,x; | |
07d6d2b8 | 16788 | to nop; addi rb,r2,x; */ |
67f0cbdb AM |
16789 | switch (r_type) |
16790 | { | |
16791 | default: | |
16792 | break; | |
16793 | ||
16794 | case R_PPC64_GOT_TLSLD16_HI: | |
16795 | case R_PPC64_GOT_TLSGD16_HI: | |
16796 | case R_PPC64_GOT_TPREL16_HI: | |
16797 | case R_PPC64_GOT_DTPREL16_HI: | |
16798 | case R_PPC64_GOT16_HI: | |
16799 | case R_PPC64_TOC16_HI: | |
16800 | /* These relocs would only be useful if building up an | |
16801 | offset to later add to r2, perhaps in an indexed | |
16802 | addressing mode instruction. Don't try to optimize. | |
16803 | Unfortunately, the possibility of someone building up an | |
16804 | offset like this or even with the HA relocs, means that | |
16805 | we need to check the high insn when optimizing the low | |
16806 | insn. */ | |
16807 | break; | |
16808 | ||
5663e321 AM |
16809 | case R_PPC64_PLTCALL_NOTOC: |
16810 | if (!unresolved_reloc) | |
16811 | htab->notoc_plt = 1; | |
16812 | /* Fall through. */ | |
23cedd1d AM |
16813 | case R_PPC64_PLTCALL: |
16814 | if (unresolved_reloc) | |
16815 | { | |
16816 | /* No plt entry. Make this into a direct call. */ | |
16817 | bfd_byte *p = contents + rel->r_offset; | |
16818 | insn = bfd_get_32 (input_bfd, p); | |
16819 | insn &= 1; | |
16820 | bfd_put_32 (input_bfd, B_DOT | insn, p); | |
5663e321 AM |
16821 | if (r_type == R_PPC64_PLTCALL) |
16822 | bfd_put_32 (input_bfd, NOP, p + 4); | |
23cedd1d AM |
16823 | unresolved_reloc = save_unresolved_reloc; |
16824 | r_type = R_PPC64_REL24; | |
16825 | } | |
16826 | break; | |
16827 | ||
5663e321 | 16828 | case R_PPC64_PLTSEQ_NOTOC: |
23cedd1d AM |
16829 | case R_PPC64_PLTSEQ: |
16830 | if (unresolved_reloc) | |
16831 | { | |
16832 | unresolved_reloc = FALSE; | |
16833 | goto nop_it; | |
16834 | } | |
16835 | break; | |
16836 | ||
5663e321 AM |
16837 | case R_PPC64_PLT_PCREL34_NOTOC: |
16838 | if (!unresolved_reloc) | |
16839 | htab->notoc_plt = 1; | |
16840 | /* Fall through. */ | |
16841 | case R_PPC64_PLT_PCREL34: | |
16842 | if (unresolved_reloc) | |
16843 | { | |
16844 | bfd_byte *p = contents + rel->r_offset; | |
16845 | bfd_put_32 (input_bfd, PNOP >> 32, p); | |
16846 | bfd_put_32 (input_bfd, PNOP, p + 4); | |
16847 | unresolved_reloc = FALSE; | |
16848 | goto copy_reloc; | |
16849 | } | |
16850 | break; | |
16851 | ||
23cedd1d AM |
16852 | case R_PPC64_PLT16_HA: |
16853 | if (unresolved_reloc) | |
16854 | { | |
16855 | unresolved_reloc = FALSE; | |
16856 | goto nop_it; | |
16857 | } | |
16858 | /* Fall through. */ | |
67f0cbdb AM |
16859 | case R_PPC64_GOT_TLSLD16_HA: |
16860 | case R_PPC64_GOT_TLSGD16_HA: | |
16861 | case R_PPC64_GOT_TPREL16_HA: | |
16862 | case R_PPC64_GOT_DTPREL16_HA: | |
16863 | case R_PPC64_GOT16_HA: | |
16864 | case R_PPC64_TOC16_HA: | |
98528052 | 16865 | if (htab->do_toc_opt && relocation + addend + 0x8000 < 0x10000 |
560c8763 | 16866 | && !ppc64_elf_tdata (input_bfd)->unexpected_toc_insn) |
98528052 | 16867 | { |
23cedd1d AM |
16868 | bfd_byte *p; |
16869 | nop_it: | |
16870 | p = contents + (rel->r_offset & ~3); | |
98528052 | 16871 | bfd_put_32 (input_bfd, NOP, p); |
d830549d | 16872 | goto copy_reloc; |
98528052 | 16873 | } |
67f0cbdb AM |
16874 | break; |
16875 | ||
23cedd1d AM |
16876 | case R_PPC64_PLT16_LO: |
16877 | case R_PPC64_PLT16_LO_DS: | |
16878 | if (unresolved_reloc) | |
16879 | { | |
16880 | unresolved_reloc = FALSE; | |
16881 | goto nop_it; | |
16882 | } | |
16883 | /* Fall through. */ | |
67f0cbdb AM |
16884 | case R_PPC64_GOT_TLSLD16_LO: |
16885 | case R_PPC64_GOT_TLSGD16_LO: | |
16886 | case R_PPC64_GOT_TPREL16_LO_DS: | |
16887 | case R_PPC64_GOT_DTPREL16_LO_DS: | |
16888 | case R_PPC64_GOT16_LO: | |
16889 | case R_PPC64_GOT16_LO_DS: | |
16890 | case R_PPC64_TOC16_LO: | |
16891 | case R_PPC64_TOC16_LO_DS: | |
98528052 | 16892 | if (htab->do_toc_opt && relocation + addend + 0x8000 < 0x10000 |
560c8763 | 16893 | && !ppc64_elf_tdata (input_bfd)->unexpected_toc_insn) |
67f0cbdb AM |
16894 | { |
16895 | bfd_byte *p = contents + (rel->r_offset & ~3); | |
16896 | insn = bfd_get_32 (input_bfd, p); | |
2365f8d7 | 16897 | if ((insn & (0x3fu << 26)) == 12u << 26 /* addic */) |
560c8763 AM |
16898 | { |
16899 | /* Transform addic to addi when we change reg. */ | |
2365f8d7 | 16900 | insn &= ~((0x3fu << 26) | (0x1f << 16)); |
560c8763 AM |
16901 | insn |= (14u << 26) | (2 << 16); |
16902 | } | |
16903 | else | |
67f0cbdb | 16904 | { |
98528052 AM |
16905 | insn &= ~(0x1f << 16); |
16906 | insn |= 2 << 16; | |
67f0cbdb | 16907 | } |
560c8763 | 16908 | bfd_put_32 (input_bfd, insn, p); |
67f0cbdb AM |
16909 | } |
16910 | break; | |
9a23f96e AM |
16911 | |
16912 | case R_PPC64_TPREL16_HA: | |
16913 | if (htab->do_tls_opt && relocation + addend + 0x8000 < 0x10000) | |
16914 | { | |
16915 | bfd_byte *p = contents + (rel->r_offset & ~3); | |
16916 | insn = bfd_get_32 (input_bfd, p); | |
2365f8d7 | 16917 | if ((insn & ((0x3fu << 26) | 0x1f << 16)) |
9a23f96e AM |
16918 | != ((15u << 26) | (13 << 16)) /* addis rt,13,imm */) |
16919 | /* xgettext:c-format */ | |
16920 | info->callbacks->minfo | |
16921 | (_("%H: warning: %s unexpected insn %#x.\n"), | |
d830549d AM |
16922 | input_bfd, input_section, rel->r_offset, |
16923 | ppc64_elf_howto_table[r_type]->name, insn); | |
9a23f96e | 16924 | else |
d830549d AM |
16925 | { |
16926 | bfd_put_32 (input_bfd, NOP, p); | |
16927 | goto copy_reloc; | |
16928 | } | |
9a23f96e AM |
16929 | } |
16930 | break; | |
16931 | ||
16932 | case R_PPC64_TPREL16_LO: | |
16933 | case R_PPC64_TPREL16_LO_DS: | |
16934 | if (htab->do_tls_opt && relocation + addend + 0x8000 < 0x10000) | |
16935 | { | |
16936 | bfd_byte *p = contents + (rel->r_offset & ~3); | |
16937 | insn = bfd_get_32 (input_bfd, p); | |
16938 | insn &= ~(0x1f << 16); | |
16939 | insn |= 13 << 16; | |
16940 | bfd_put_32 (input_bfd, insn, p); | |
16941 | } | |
16942 | break; | |
67f0cbdb AM |
16943 | } |
16944 | ||
65f38f15 AM |
16945 | /* Do any further special processing. */ |
16946 | switch (r_type) | |
16947 | { | |
16948 | default: | |
16949 | break; | |
16950 | ||
25f23106 | 16951 | case R_PPC64_REL16_HA: |
4a969973 AM |
16952 | case R_PPC64_REL16_HIGHA: |
16953 | case R_PPC64_REL16_HIGHERA: | |
16954 | case R_PPC64_REL16_HIGHESTA: | |
a680de9a | 16955 | case R_PPC64_REL16DX_HA: |
f9c6b907 AM |
16956 | case R_PPC64_ADDR16_HA: |
16957 | case R_PPC64_ADDR16_HIGHA: | |
65f38f15 AM |
16958 | case R_PPC64_ADDR16_HIGHERA: |
16959 | case R_PPC64_ADDR16_HIGHESTA: | |
65f38f15 AM |
16960 | case R_PPC64_TOC16_HA: |
16961 | case R_PPC64_SECTOFF_HA: | |
411e1bfb | 16962 | case R_PPC64_TPREL16_HA: |
f9c6b907 | 16963 | case R_PPC64_TPREL16_HIGHA: |
411e1bfb | 16964 | case R_PPC64_TPREL16_HIGHERA: |
411e1bfb | 16965 | case R_PPC64_TPREL16_HIGHESTA: |
f9c6b907 AM |
16966 | case R_PPC64_DTPREL16_HA: |
16967 | case R_PPC64_DTPREL16_HIGHA: | |
411e1bfb | 16968 | case R_PPC64_DTPREL16_HIGHERA: |
411e1bfb | 16969 | case R_PPC64_DTPREL16_HIGHESTA: |
65f38f15 AM |
16970 | /* It's just possible that this symbol is a weak symbol |
16971 | that's not actually defined anywhere. In that case, | |
16972 | 'sec' would be NULL, and we should leave the symbol | |
16973 | alone (it will be set to zero elsewhere in the link). */ | |
5c5f6e17 AM |
16974 | if (sec == NULL) |
16975 | break; | |
1a0670f3 | 16976 | /* Fall through. */ |
5c5f6e17 AM |
16977 | |
16978 | case R_PPC64_GOT16_HA: | |
16979 | case R_PPC64_PLTGOT16_HA: | |
16980 | case R_PPC64_PLT16_HA: | |
16981 | case R_PPC64_GOT_TLSGD16_HA: | |
16982 | case R_PPC64_GOT_TLSLD16_HA: | |
16983 | case R_PPC64_GOT_TPREL16_HA: | |
16984 | case R_PPC64_GOT_DTPREL16_HA: | |
16985 | /* Add 0x10000 if sign bit in 0:15 is set. | |
16986 | Bits 0:15 are not used. */ | |
16987 | addend += 0x8000; | |
65f38f15 AM |
16988 | break; |
16989 | ||
5663e321 AM |
16990 | case R_PPC64_D34_HA30: |
16991 | case R_PPC64_ADDR16_HIGHERA34: | |
16992 | case R_PPC64_ADDR16_HIGHESTA34: | |
16993 | case R_PPC64_REL16_HIGHERA34: | |
16994 | case R_PPC64_REL16_HIGHESTA34: | |
16995 | if (sec != NULL) | |
16996 | addend += 1ULL << 33; | |
16997 | break; | |
16998 | ||
65f38f15 AM |
16999 | case R_PPC64_ADDR16_DS: |
17000 | case R_PPC64_ADDR16_LO_DS: | |
17001 | case R_PPC64_GOT16_DS: | |
17002 | case R_PPC64_GOT16_LO_DS: | |
17003 | case R_PPC64_PLT16_LO_DS: | |
17004 | case R_PPC64_SECTOFF_DS: | |
17005 | case R_PPC64_SECTOFF_LO_DS: | |
17006 | case R_PPC64_TOC16_DS: | |
17007 | case R_PPC64_TOC16_LO_DS: | |
17008 | case R_PPC64_PLTGOT16_DS: | |
17009 | case R_PPC64_PLTGOT16_LO_DS: | |
411e1bfb AM |
17010 | case R_PPC64_GOT_TPREL16_DS: |
17011 | case R_PPC64_GOT_TPREL16_LO_DS: | |
17012 | case R_PPC64_GOT_DTPREL16_DS: | |
17013 | case R_PPC64_GOT_DTPREL16_LO_DS: | |
17014 | case R_PPC64_TPREL16_DS: | |
17015 | case R_PPC64_TPREL16_LO_DS: | |
17016 | case R_PPC64_DTPREL16_DS: | |
17017 | case R_PPC64_DTPREL16_LO_DS: | |
adadcc0c AM |
17018 | insn = bfd_get_32 (input_bfd, contents + (rel->r_offset & ~3)); |
17019 | mask = 3; | |
a680de9a PB |
17020 | /* If this reloc is against an lq, lxv, or stxv insn, then |
17021 | the value must be a multiple of 16. This is somewhat of | |
17022 | a hack, but the "correct" way to do this by defining _DQ | |
17023 | forms of all the _DS relocs bloats all reloc switches in | |
17024 | this file. It doesn't make much sense to use these | |
17025 | relocs in data, so testing the insn should be safe. */ | |
2365f8d7 AM |
17026 | if ((insn & (0x3fu << 26)) == (56u << 26) |
17027 | || ((insn & (0x3fu << 26)) == (61u << 26) && (insn & 3) == 1)) | |
adadcc0c | 17028 | mask = 15; |
a680de9a PB |
17029 | relocation += addend; |
17030 | addend = insn & (mask ^ 3); | |
17031 | if ((relocation & mask) != 0) | |
65f38f15 | 17032 | { |
a680de9a | 17033 | relocation ^= relocation & mask; |
25f53a85 | 17034 | info->callbacks->einfo |
695344c0 | 17035 | /* xgettext:c-format */ |
174d0a74 | 17036 | (_("%H: error: %s not a multiple of %u\n"), |
25f53a85 | 17037 | input_bfd, input_section, rel->r_offset, |
d830549d | 17038 | ppc64_elf_howto_table[r_type]->name, |
adadcc0c | 17039 | mask + 1); |
65f38f15 | 17040 | bfd_set_error (bfd_error_bad_value); |
b34976b6 | 17041 | ret = FALSE; |
c316a17c | 17042 | goto copy_reloc; |
65f38f15 AM |
17043 | } |
17044 | break; | |
5bd4f169 AM |
17045 | } |
17046 | ||
239e1f3a AM |
17047 | /* Dynamic relocs are not propagated for SEC_DEBUGGING sections |
17048 | because such sections are not SEC_ALLOC and thus ld.so will | |
17049 | not process them. */ | |
d830549d | 17050 | howto = ppc64_elf_howto_table[(int) r_type]; |
65f38f15 | 17051 | if (unresolved_reloc |
239e1f3a | 17052 | && !((input_section->flags & SEC_DEBUGGING) != 0 |
1d5316ab AM |
17053 | && h->elf.def_dynamic) |
17054 | && _bfd_elf_section_offset (output_bfd, info, input_section, | |
17055 | rel->r_offset) != (bfd_vma) -1) | |
9c07fe7c | 17056 | { |
25f53a85 | 17057 | info->callbacks->einfo |
695344c0 | 17058 | /* xgettext:c-format */ |
c1c8c1ef | 17059 | (_("%H: unresolvable %s against `%pT'\n"), |
25f53a85 | 17060 | input_bfd, input_section, rel->r_offset, |
b80eed39 | 17061 | howto->name, |
039b3fef | 17062 | h->elf.root.root.string); |
b34976b6 | 17063 | ret = FALSE; |
9c07fe7c | 17064 | } |
5bd4f169 | 17065 | |
b80eed39 AM |
17066 | /* 16-bit fields in insns mostly have signed values, but a |
17067 | few insns have 16-bit unsigned values. Really, we should | |
17068 | have different reloc types. */ | |
17069 | if (howto->complain_on_overflow != complain_overflow_dont | |
17070 | && howto->dst_mask == 0xffff | |
17071 | && (input_section->flags & SEC_CODE) != 0) | |
17072 | { | |
17073 | enum complain_overflow complain = complain_overflow_signed; | |
17074 | ||
17075 | insn = bfd_get_32 (input_bfd, contents + (rel->r_offset & ~3)); | |
2365f8d7 | 17076 | if ((insn & (0x3fu << 26)) == 10u << 26 /* cmpli */) |
a47622ac AM |
17077 | complain = complain_overflow_bitfield; |
17078 | else if (howto->rightshift == 0 | |
2365f8d7 AM |
17079 | ? ((insn & (0x3fu << 26)) == 28u << 26 /* andi */ |
17080 | || (insn & (0x3fu << 26)) == 24u << 26 /* ori */ | |
17081 | || (insn & (0x3fu << 26)) == 26u << 26 /* xori */) | |
17082 | : ((insn & (0x3fu << 26)) == 29u << 26 /* andis */ | |
17083 | || (insn & (0x3fu << 26)) == 25u << 26 /* oris */ | |
17084 | || (insn & (0x3fu << 26)) == 27u << 26 /* xoris */)) | |
b80eed39 AM |
17085 | complain = complain_overflow_unsigned; |
17086 | if (howto->complain_on_overflow != complain) | |
17087 | { | |
17088 | alt_howto = *howto; | |
17089 | alt_howto.complain_on_overflow = complain; | |
17090 | howto = &alt_howto; | |
17091 | } | |
17092 | } | |
17093 | ||
5663e321 | 17094 | switch (r_type) |
a680de9a | 17095 | { |
5663e321 AM |
17096 | /* Split field relocs aren't handled by _bfd_final_link_relocate. */ |
17097 | case R_PPC64_D34: | |
17098 | case R_PPC64_D34_LO: | |
17099 | case R_PPC64_D34_HI30: | |
17100 | case R_PPC64_D34_HA30: | |
17101 | case R_PPC64_PCREL34: | |
17102 | case R_PPC64_GOT_PCREL34: | |
c213164a AM |
17103 | case R_PPC64_TPREL34: |
17104 | case R_PPC64_DTPREL34: | |
87c69f97 AM |
17105 | case R_PPC64_GOT_TLSGD_PCREL34: |
17106 | case R_PPC64_GOT_TLSLD_PCREL34: | |
17107 | case R_PPC64_GOT_TPREL_PCREL34: | |
17108 | case R_PPC64_GOT_DTPREL_PCREL34: | |
5663e321 AM |
17109 | case R_PPC64_PLT_PCREL34: |
17110 | case R_PPC64_PLT_PCREL34_NOTOC: | |
17111 | case R_PPC64_D28: | |
17112 | case R_PPC64_PCREL28: | |
17113 | if (rel->r_offset + 8 > input_section->size) | |
17114 | r = bfd_reloc_outofrange; | |
17115 | else | |
17116 | { | |
5663e321 AM |
17117 | relocation += addend; |
17118 | if (howto->pc_relative) | |
17119 | relocation -= (rel->r_offset | |
17120 | + input_section->output_offset | |
17121 | + input_section->output_section->vma); | |
17122 | relocation >>= howto->rightshift; | |
17123 | ||
17124 | pinsn = bfd_get_32 (input_bfd, contents + rel->r_offset); | |
17125 | pinsn <<= 32; | |
17126 | pinsn |= bfd_get_32 (input_bfd, contents + rel->r_offset + 4); | |
17127 | ||
17128 | pinsn &= ~howto->dst_mask; | |
17129 | pinsn |= (((relocation << 16) | (relocation & 0xffff)) | |
17130 | & howto->dst_mask); | |
17131 | bfd_put_32 (input_bfd, pinsn >> 32, contents + rel->r_offset); | |
17132 | bfd_put_32 (input_bfd, pinsn, contents + rel->r_offset + 4); | |
17133 | r = bfd_reloc_ok; | |
17134 | if (howto->complain_on_overflow == complain_overflow_signed | |
17135 | && (relocation + (1ULL << (howto->bitsize - 1)) | |
17136 | >= 1ULL << howto->bitsize)) | |
17137 | r = bfd_reloc_overflow; | |
17138 | } | |
17139 | break; | |
17140 | ||
17141 | case R_PPC64_REL16DX_HA: | |
a680de9a PB |
17142 | if (rel->r_offset + 4 > input_section->size) |
17143 | r = bfd_reloc_outofrange; | |
17144 | else | |
17145 | { | |
17146 | relocation += addend; | |
17147 | relocation -= (rel->r_offset | |
17148 | + input_section->output_offset | |
17149 | + input_section->output_section->vma); | |
3de43e7b | 17150 | relocation = (bfd_signed_vma) relocation >> 16; |
a680de9a PB |
17151 | insn = bfd_get_32 (input_bfd, contents + rel->r_offset); |
17152 | insn &= ~0x1fffc1; | |
3de43e7b | 17153 | insn |= (relocation & 0xffc1) | ((relocation & 0x3e) << 15); |
a680de9a PB |
17154 | bfd_put_32 (input_bfd, insn, contents + rel->r_offset); |
17155 | r = bfd_reloc_ok; | |
3de43e7b | 17156 | if (relocation + 0x8000 > 0xffff) |
a680de9a PB |
17157 | r = bfd_reloc_overflow; |
17158 | } | |
5663e321 AM |
17159 | break; |
17160 | ||
17161 | default: | |
17162 | r = _bfd_final_link_relocate (howto, input_bfd, input_section, | |
17163 | contents, rel->r_offset, | |
17164 | relocation, addend); | |
a680de9a | 17165 | } |
5bd4f169 | 17166 | |
ef60b7ff | 17167 | if (r != bfd_reloc_ok) |
5bd4f169 | 17168 | { |
bc30df16 | 17169 | char *more_info = NULL; |
b80eed39 | 17170 | const char *reloc_name = howto->name; |
bc30df16 AM |
17171 | |
17172 | if (reloc_dest != DEST_NORMAL) | |
17173 | { | |
17174 | more_info = bfd_malloc (strlen (reloc_name) + 8); | |
17175 | if (more_info != NULL) | |
17176 | { | |
17177 | strcpy (more_info, reloc_name); | |
17178 | strcat (more_info, (reloc_dest == DEST_OPD | |
17179 | ? " (OPD)" : " (stub)")); | |
17180 | reloc_name = more_info; | |
17181 | } | |
17182 | } | |
17183 | ||
cd27b276 | 17184 | if (r == bfd_reloc_overflow) |
5bd4f169 | 17185 | { |
8131c122 AM |
17186 | /* On code like "if (foo) foo();" don't report overflow |
17187 | on a branch to zero when foo is undefined. */ | |
17188 | if (!warned | |
17189 | && (reloc_dest == DEST_STUB | |
17190 | || !(h != NULL | |
17191 | && (h->elf.root.type == bfd_link_hash_undefweak | |
17192 | || h->elf.root.type == bfd_link_hash_undefined) | |
17193 | && is_branch_reloc (r_type)))) | |
1a72702b AM |
17194 | info->callbacks->reloc_overflow (info, &h->elf.root, |
17195 | sym_name, reloc_name, | |
17196 | orig_rel.r_addend, | |
17197 | input_bfd, input_section, | |
17198 | rel->r_offset); | |
ef60b7ff AM |
17199 | } |
17200 | else | |
17201 | { | |
25f53a85 | 17202 | info->callbacks->einfo |
695344c0 | 17203 | /* xgettext:c-format */ |
c1c8c1ef | 17204 | (_("%H: %s against `%pT': error %d\n"), |
25f53a85 | 17205 | input_bfd, input_section, rel->r_offset, |
bc30df16 | 17206 | reloc_name, sym_name, (int) r); |
b34976b6 | 17207 | ret = FALSE; |
ef60b7ff | 17208 | } |
c9594989 | 17209 | free (more_info); |
5bd4f169 | 17210 | } |
c316a17c AM |
17211 | copy_reloc: |
17212 | if (wrel != rel) | |
17213 | *wrel = *rel; | |
17214 | } | |
17215 | ||
17216 | if (wrel != rel) | |
17217 | { | |
17218 | Elf_Internal_Shdr *rel_hdr; | |
17219 | size_t deleted = rel - wrel; | |
17220 | ||
17221 | rel_hdr = _bfd_elf_single_rel_hdr (input_section->output_section); | |
17222 | rel_hdr->sh_size -= rel_hdr->sh_entsize * deleted; | |
17223 | if (rel_hdr->sh_size == 0) | |
17224 | { | |
17225 | /* It is too late to remove an empty reloc section. Leave | |
17226 | one NONE reloc. | |
17227 | ??? What is wrong with an empty section??? */ | |
17228 | rel_hdr->sh_size = rel_hdr->sh_entsize; | |
17229 | deleted -= 1; | |
17230 | } | |
17231 | rel_hdr = _bfd_elf_single_rel_hdr (input_section); | |
17232 | rel_hdr->sh_size -= rel_hdr->sh_entsize * deleted; | |
17233 | input_section->reloc_count -= deleted; | |
5bd4f169 AM |
17234 | } |
17235 | ||
645ea6a9 AM |
17236 | /* If we're emitting relocations, then shortly after this function |
17237 | returns, reloc offsets and addends for this section will be | |
17238 | adjusted. Worse, reloc symbol indices will be for the output | |
8860955f AM |
17239 | file rather than the input. Save a copy of the relocs for |
17240 | opd_entry_value. */ | |
0e1862bb | 17241 | if (is_opd && (info->emitrelocations || bfd_link_relocatable (info))) |
8860955f AM |
17242 | { |
17243 | bfd_size_type amt; | |
17244 | amt = input_section->reloc_count * sizeof (Elf_Internal_Rela); | |
17245 | rel = bfd_alloc (input_bfd, amt); | |
729eabd5 AM |
17246 | BFD_ASSERT (ppc64_elf_tdata (input_bfd)->opd.relocs == NULL); |
17247 | ppc64_elf_tdata (input_bfd)->opd.relocs = rel; | |
8860955f AM |
17248 | if (rel == NULL) |
17249 | return FALSE; | |
17250 | memcpy (rel, relocs, amt); | |
17251 | } | |
5bd4f169 AM |
17252 | return ret; |
17253 | } | |
17254 | ||
754021d0 AM |
17255 | /* Adjust the value of any local symbols in opd sections. */ |
17256 | ||
6e0b88f1 | 17257 | static int |
754021d0 AM |
17258 | ppc64_elf_output_symbol_hook (struct bfd_link_info *info, |
17259 | const char *name ATTRIBUTE_UNUSED, | |
17260 | Elf_Internal_Sym *elfsym, | |
17261 | asection *input_sec, | |
17262 | struct elf_link_hash_entry *h) | |
17263 | { | |
74f0fb50 AM |
17264 | struct _opd_sec_data *opd; |
17265 | long adjust; | |
754021d0 AM |
17266 | bfd_vma value; |
17267 | ||
4025353c | 17268 | if (h != NULL) |
6e0b88f1 | 17269 | return 1; |
4025353c | 17270 | |
74f0fb50 AM |
17271 | opd = get_opd_info (input_sec); |
17272 | if (opd == NULL || opd->adjust == NULL) | |
6e0b88f1 | 17273 | return 1; |
754021d0 AM |
17274 | |
17275 | value = elfsym->st_value - input_sec->output_offset; | |
0e1862bb | 17276 | if (!bfd_link_relocatable (info)) |
754021d0 AM |
17277 | value -= input_sec->output_section->vma; |
17278 | ||
51aecdc5 | 17279 | adjust = opd->adjust[OPD_NDX (value)]; |
4025353c | 17280 | if (adjust == -1) |
6e0b88f1 AM |
17281 | return 2; |
17282 | ||
17283 | elfsym->st_value += adjust; | |
17284 | return 1; | |
754021d0 AM |
17285 | } |
17286 | ||
5bd4f169 AM |
17287 | /* Finish up dynamic symbol handling. We set the contents of various |
17288 | dynamic sections here. */ | |
17289 | ||
b34976b6 | 17290 | static bfd_boolean |
4ce794b7 AM |
17291 | ppc64_elf_finish_dynamic_symbol (bfd *output_bfd, |
17292 | struct bfd_link_info *info, | |
17293 | struct elf_link_hash_entry *h, | |
4aef7643 | 17294 | Elf_Internal_Sym *sym) |
5bd4f169 | 17295 | { |
65f38f15 | 17296 | struct ppc_link_hash_table *htab; |
8387904d | 17297 | struct plt_entry *ent; |
5bd4f169 | 17298 | |
65f38f15 | 17299 | htab = ppc_hash_table (info); |
4dfe6ac6 NC |
17300 | if (htab == NULL) |
17301 | return FALSE; | |
5bd4f169 | 17302 | |
49c09209 AM |
17303 | if (!htab->opd_abi && !h->def_regular) |
17304 | for (ent = h->plt.plist; ent != NULL; ent = ent->next) | |
17305 | if (ent->plt.offset != (bfd_vma) -1) | |
17306 | { | |
17307 | /* Mark the symbol as undefined, rather than as | |
17308 | defined in glink. Leave the value if there were | |
17309 | any relocations where pointer equality matters | |
17310 | (this is a clue for the dynamic linker, to make | |
17311 | function pointer comparisons work between an | |
17312 | application and shared library), otherwise set it | |
17313 | to zero. */ | |
17314 | sym->st_shndx = SHN_UNDEF; | |
17315 | if (!h->pointer_equality_needed) | |
17316 | sym->st_value = 0; | |
17317 | else if (!h->ref_regular_nonweak) | |
17318 | { | |
17319 | /* This breaks function pointer comparisons, but | |
17320 | that is better than breaking tests for a NULL | |
17321 | function pointer. */ | |
17322 | sym->st_value = 0; | |
17323 | } | |
17324 | break; | |
17325 | } | |
5bd4f169 | 17326 | |
1bdd8fac AM |
17327 | if (h->needs_copy |
17328 | && (h->root.type == bfd_link_hash_defined | |
17329 | || h->root.type == bfd_link_hash_defweak) | |
17330 | && (h->root.u.def.section == htab->elf.sdynbss | |
17331 | || h->root.u.def.section == htab->elf.sdynrelro)) | |
5bd4f169 | 17332 | { |
65f38f15 | 17333 | /* This symbol needs a copy reloc. Set it up. */ |
49c09209 | 17334 | Elf_Internal_Rela rela; |
5474d94f | 17335 | asection *srel; |
49c09209 | 17336 | bfd_byte *loc; |
5bd4f169 | 17337 | |
1bdd8fac | 17338 | if (h->dynindx == -1) |
65f38f15 | 17339 | abort (); |
5bd4f169 | 17340 | |
ed7007c1 | 17341 | rela.r_offset = defined_sym_val (h); |
5bd4f169 AM |
17342 | rela.r_info = ELF64_R_INFO (h->dynindx, R_PPC64_COPY); |
17343 | rela.r_addend = 0; | |
afbf7e8e | 17344 | if (h->root.u.def.section == htab->elf.sdynrelro) |
5474d94f AM |
17345 | srel = htab->elf.sreldynrelro; |
17346 | else | |
17347 | srel = htab->elf.srelbss; | |
17348 | loc = srel->contents; | |
17349 | loc += srel->reloc_count++ * sizeof (Elf64_External_Rela); | |
65f38f15 | 17350 | bfd_elf64_swap_reloca_out (output_bfd, &rela, loc); |
5bd4f169 AM |
17351 | } |
17352 | ||
b34976b6 | 17353 | return TRUE; |
5bd4f169 AM |
17354 | } |
17355 | ||
65f38f15 AM |
17356 | /* Used to decide how to sort relocs in an optimal manner for the |
17357 | dynamic linker, before writing them out. */ | |
17358 | ||
17359 | static enum elf_reloc_type_class | |
7e612e98 AM |
17360 | ppc64_elf_reloc_type_class (const struct bfd_link_info *info, |
17361 | const asection *rel_sec, | |
17362 | const Elf_Internal_Rela *rela) | |
65f38f15 | 17363 | { |
04c9666a | 17364 | enum elf_ppc64_reloc_type r_type; |
7e612e98 AM |
17365 | struct ppc_link_hash_table *htab = ppc_hash_table (info); |
17366 | ||
33e44f2e | 17367 | if (rel_sec == htab->elf.irelplt) |
7e612e98 | 17368 | return reloc_class_ifunc; |
a33d1f77 | 17369 | |
4ce794b7 | 17370 | r_type = ELF64_R_TYPE (rela->r_info); |
a33d1f77 | 17371 | switch (r_type) |
65f38f15 AM |
17372 | { |
17373 | case R_PPC64_RELATIVE: | |
17374 | return reloc_class_relative; | |
17375 | case R_PPC64_JMP_SLOT: | |
17376 | return reloc_class_plt; | |
17377 | case R_PPC64_COPY: | |
17378 | return reloc_class_copy; | |
17379 | default: | |
17380 | return reloc_class_normal; | |
17381 | } | |
17382 | } | |
17383 | ||
5bd4f169 AM |
17384 | /* Finish up the dynamic sections. */ |
17385 | ||
b34976b6 | 17386 | static bfd_boolean |
4ce794b7 AM |
17387 | ppc64_elf_finish_dynamic_sections (bfd *output_bfd, |
17388 | struct bfd_link_info *info) | |
5bd4f169 | 17389 | { |
65f38f15 AM |
17390 | struct ppc_link_hash_table *htab; |
17391 | bfd *dynobj; | |
5bd4f169 | 17392 | asection *sdyn; |
5bd4f169 | 17393 | |
65f38f15 | 17394 | htab = ppc_hash_table (info); |
4dfe6ac6 NC |
17395 | if (htab == NULL) |
17396 | return FALSE; | |
17397 | ||
65f38f15 | 17398 | dynobj = htab->elf.dynobj; |
3d4d4302 | 17399 | sdyn = bfd_get_linker_section (dynobj, ".dynamic"); |
5bd4f169 | 17400 | |
65f38f15 | 17401 | if (htab->elf.dynamic_sections_created) |
5bd4f169 | 17402 | { |
5bd4f169 AM |
17403 | Elf64_External_Dyn *dyncon, *dynconend; |
17404 | ||
33e44f2e | 17405 | if (sdyn == NULL || htab->elf.sgot == NULL) |
65f38f15 | 17406 | abort (); |
5bd4f169 AM |
17407 | |
17408 | dyncon = (Elf64_External_Dyn *) sdyn->contents; | |
eea6121a | 17409 | dynconend = (Elf64_External_Dyn *) (sdyn->contents + sdyn->size); |
5bd4f169 AM |
17410 | for (; dyncon < dynconend; dyncon++) |
17411 | { | |
17412 | Elf_Internal_Dyn dyn; | |
19397422 | 17413 | asection *s; |
5bd4f169 AM |
17414 | |
17415 | bfd_elf64_swap_dyn_in (dynobj, dyncon, &dyn); | |
17416 | ||
17417 | switch (dyn.d_tag) | |
17418 | { | |
65f38f15 AM |
17419 | default: |
17420 | continue; | |
5bd4f169 | 17421 | |
5d1634d7 | 17422 | case DT_PPC64_GLINK: |
4ce794b7 | 17423 | s = htab->glink; |
6348e046 | 17424 | dyn.d_un.d_ptr = s->output_section->vma + s->output_offset; |
ad8e1ba5 AM |
17425 | /* We stupidly defined DT_PPC64_GLINK to be the start |
17426 | of glink rather than the first entry point, which is | |
17427 | what ld.so needs, and now have a bigger stub to | |
17428 | support automatic multiple TOCs. */ | |
9e390558 | 17429 | dyn.d_un.d_ptr += GLINK_PLTRESOLVE_SIZE (htab) - 8 * 4; |
5d1634d7 AM |
17430 | break; |
17431 | ||
19397422 AM |
17432 | case DT_PPC64_OPD: |
17433 | s = bfd_get_section_by_name (output_bfd, ".opd"); | |
6348e046 AM |
17434 | if (s == NULL) |
17435 | continue; | |
17436 | dyn.d_un.d_ptr = s->vma; | |
19397422 AM |
17437 | break; |
17438 | ||
e8910a83 | 17439 | case DT_PPC64_OPT: |
5663e321 AM |
17440 | if ((htab->do_multi_toc && htab->multi_toc_needed) |
17441 | || htab->notoc_plt) | |
e8910a83 | 17442 | dyn.d_un.d_val |= PPC64_OPT_MULTI_TOC; |
f378ab09 AM |
17443 | if (htab->has_plt_localentry0) |
17444 | dyn.d_un.d_val |= PPC64_OPT_LOCALENTRY; | |
e8910a83 AM |
17445 | break; |
17446 | ||
19397422 AM |
17447 | case DT_PPC64_OPDSZ: |
17448 | s = bfd_get_section_by_name (output_bfd, ".opd"); | |
6348e046 AM |
17449 | if (s == NULL) |
17450 | continue; | |
eea6121a | 17451 | dyn.d_un.d_val = s->size; |
19397422 AM |
17452 | break; |
17453 | ||
65f38f15 | 17454 | case DT_PLTGOT: |
33e44f2e | 17455 | s = htab->elf.splt; |
6348e046 | 17456 | dyn.d_un.d_ptr = s->output_section->vma + s->output_offset; |
65f38f15 AM |
17457 | break; |
17458 | ||
17459 | case DT_JMPREL: | |
33e44f2e | 17460 | s = htab->elf.srelplt; |
6348e046 | 17461 | dyn.d_un.d_ptr = s->output_section->vma + s->output_offset; |
65f38f15 | 17462 | break; |
5bd4f169 | 17463 | |
65f38f15 | 17464 | case DT_PLTRELSZ: |
33e44f2e | 17465 | dyn.d_un.d_val = htab->elf.srelplt->size; |
5d1634d7 | 17466 | break; |
82e66161 AM |
17467 | |
17468 | case DT_TEXTREL: | |
cebd6b8a | 17469 | if (htab->elf.ifunc_resolvers) |
82e66161 AM |
17470 | info->callbacks->einfo |
17471 | (_("%P: warning: text relocations and GNU indirect " | |
17472 | "functions may result in a segfault at runtime\n")); | |
17473 | continue; | |
5bd4f169 | 17474 | } |
5bd4f169 | 17475 | |
65f38f15 | 17476 | bfd_elf64_swap_dyn_out (output_bfd, &dyn, dyncon); |
5bd4f169 | 17477 | } |
5bd4f169 AM |
17478 | } |
17479 | ||
6528b6eb AM |
17480 | if (htab->elf.sgot != NULL && htab->elf.sgot->size != 0 |
17481 | && htab->elf.sgot->output_section != bfd_abs_section_ptr) | |
5d1634d7 AM |
17482 | { |
17483 | /* Fill in the first entry in the global offset table. | |
17484 | We use it to hold the link-time TOCbase. */ | |
17485 | bfd_put_64 (output_bfd, | |
60ee0d4a | 17486 | elf_gp (output_bfd) + TOC_BASE_OFF, |
33e44f2e | 17487 | htab->elf.sgot->contents); |
5d1634d7 AM |
17488 | |
17489 | /* Set .got entry size. */ | |
2cdcc330 AM |
17490 | elf_section_data (htab->elf.sgot->output_section)->this_hdr.sh_entsize |
17491 | = 8; | |
5d1634d7 AM |
17492 | } |
17493 | ||
6528b6eb AM |
17494 | if (htab->elf.splt != NULL && htab->elf.splt->size != 0 |
17495 | && htab->elf.splt->output_section != bfd_abs_section_ptr) | |
5d1634d7 AM |
17496 | { |
17497 | /* Set .plt entry size. */ | |
33e44f2e | 17498 | elf_section_data (htab->elf.splt->output_section)->this_hdr.sh_entsize |
b9e5796b | 17499 | = PLT_ENTRY_SIZE (htab); |
5d1634d7 AM |
17500 | } |
17501 | ||
84f5d08e AM |
17502 | /* brlt is SEC_LINKER_CREATED, so we need to write out relocs for |
17503 | brlt ourselves if emitrelocations. */ | |
17504 | if (htab->brlt != NULL | |
17505 | && htab->brlt->reloc_count != 0 | |
17506 | && !_bfd_elf_link_output_relocs (output_bfd, | |
17507 | htab->brlt, | |
d4730f92 | 17508 | elf_section_data (htab->brlt)->rela.hdr, |
84f5d08e AM |
17509 | elf_section_data (htab->brlt)->relocs, |
17510 | NULL)) | |
17511 | return FALSE; | |
17512 | ||
176a0d42 AM |
17513 | if (htab->glink != NULL |
17514 | && htab->glink->reloc_count != 0 | |
17515 | && !_bfd_elf_link_output_relocs (output_bfd, | |
17516 | htab->glink, | |
d4730f92 | 17517 | elf_section_data (htab->glink)->rela.hdr, |
176a0d42 AM |
17518 | elf_section_data (htab->glink)->relocs, |
17519 | NULL)) | |
17520 | return FALSE; | |
17521 | ||
da44f4e5 | 17522 | |
df136d64 AM |
17523 | if (htab->glink_eh_frame != NULL |
17524 | && htab->glink_eh_frame->size != 0 | |
17525 | && htab->glink_eh_frame->sec_info_type == SEC_INFO_TYPE_EH_FRAME | |
17526 | && !_bfd_elf_write_section_eh_frame (output_bfd, info, | |
17527 | htab->glink_eh_frame, | |
17528 | htab->glink_eh_frame->contents)) | |
17529 | return FALSE; | |
58d180e8 | 17530 | |
e717da7e | 17531 | /* We need to handle writing out multiple GOT sections ourselves, |
7b53ace3 AM |
17532 | since we didn't add them to DYNOBJ. We know dynobj is the first |
17533 | bfd. */ | |
c72f2fb2 | 17534 | while ((dynobj = dynobj->link.next) != NULL) |
e717da7e AM |
17535 | { |
17536 | asection *s; | |
7b53ace3 | 17537 | |
0c8d6e5c | 17538 | if (!is_ppc64_elf (dynobj)) |
7b53ace3 AM |
17539 | continue; |
17540 | ||
e717da7e AM |
17541 | s = ppc64_elf_tdata (dynobj)->got; |
17542 | if (s != NULL | |
eea6121a | 17543 | && s->size != 0 |
e717da7e AM |
17544 | && s->output_section != bfd_abs_section_ptr |
17545 | && !bfd_set_section_contents (output_bfd, s->output_section, | |
17546 | s->contents, s->output_offset, | |
eea6121a | 17547 | s->size)) |
e717da7e AM |
17548 | return FALSE; |
17549 | s = ppc64_elf_tdata (dynobj)->relgot; | |
17550 | if (s != NULL | |
eea6121a | 17551 | && s->size != 0 |
e717da7e AM |
17552 | && s->output_section != bfd_abs_section_ptr |
17553 | && !bfd_set_section_contents (output_bfd, s->output_section, | |
17554 | s->contents, s->output_offset, | |
eea6121a | 17555 | s->size)) |
e717da7e AM |
17556 | return FALSE; |
17557 | } | |
f6c52c13 | 17558 | |
b34976b6 | 17559 | return TRUE; |
5bd4f169 AM |
17560 | } |
17561 | ||
5bd4f169 | 17562 | #include "elf64-target.h" |
7b8e7dad AM |
17563 | |
17564 | /* FreeBSD support */ | |
17565 | ||
17566 | #undef TARGET_LITTLE_SYM | |
17567 | #undef TARGET_LITTLE_NAME | |
17568 | ||
17569 | #undef TARGET_BIG_SYM | |
6d00b590 | 17570 | #define TARGET_BIG_SYM powerpc_elf64_fbsd_vec |
7b8e7dad AM |
17571 | #undef TARGET_BIG_NAME |
17572 | #define TARGET_BIG_NAME "elf64-powerpc-freebsd" | |
17573 | ||
17574 | #undef ELF_OSABI | |
17575 | #define ELF_OSABI ELFOSABI_FREEBSD | |
17576 | ||
17577 | #undef elf64_bed | |
17578 | #define elf64_bed elf64_powerpc_fbsd_bed | |
17579 | ||
17580 | #include "elf64-target.h" |