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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 | ||
d349c8e2 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; | |
5d1634d7 | 3253 | |
87d72d41 AM |
3254 | /* Small local sym cache. */ |
3255 | struct sym_cache sym_cache; | |
65f38f15 AM |
3256 | }; |
3257 | ||
4c52953f AM |
3258 | /* Rename some of the generic section flags to better document how they |
3259 | are used here. */ | |
b0dddeec AM |
3260 | |
3261 | /* Nonzero if this section has TLS related relocations. */ | |
3262 | #define has_tls_reloc sec_flg0 | |
3263 | ||
9737e8af AM |
3264 | /* Nonzero if this section has a call to __tls_get_addr lacking marker |
3265 | relocations. */ | |
3266 | #define nomark_tls_get_addr sec_flg1 | |
b0dddeec AM |
3267 | |
3268 | /* Nonzero if this section has any toc or got relocs. */ | |
3269 | #define has_toc_reloc sec_flg2 | |
3270 | ||
3271 | /* Nonzero if this section has a call to another section that uses | |
3272 | the toc or got. */ | |
d77c8a4b | 3273 | #define makes_toc_func_call sec_flg3 |
b0dddeec AM |
3274 | |
3275 | /* Recursion protection when determining above flag. */ | |
d77c8a4b | 3276 | #define call_check_in_progress sec_flg4 |
70cc837d | 3277 | #define call_check_done sec_flg5 |
4c52953f | 3278 | |
65f38f15 AM |
3279 | /* Get the ppc64 ELF linker hash table from a link_info structure. */ |
3280 | ||
3281 | #define ppc_hash_table(p) \ | |
4dfe6ac6 NC |
3282 | (elf_hash_table_id ((struct elf_link_hash_table *) ((p)->hash)) \ |
3283 | == PPC64_ELF_DATA ? ((struct ppc_link_hash_table *) ((p)->hash)) : NULL) | |
65f38f15 | 3284 | |
721956f4 AM |
3285 | #define ppc_stub_hash_lookup(table, string, create, copy) \ |
3286 | ((struct ppc_stub_hash_entry *) \ | |
3287 | bfd_hash_lookup ((table), (string), (create), (copy))) | |
3288 | ||
3289 | #define ppc_branch_hash_lookup(table, string, create, copy) \ | |
3290 | ((struct ppc_branch_hash_entry *) \ | |
3291 | bfd_hash_lookup ((table), (string), (create), (copy))) | |
3292 | ||
3293 | /* Create an entry in the stub hash table. */ | |
3294 | ||
3295 | static struct bfd_hash_entry * | |
4ce794b7 AM |
3296 | stub_hash_newfunc (struct bfd_hash_entry *entry, |
3297 | struct bfd_hash_table *table, | |
3298 | const char *string) | |
721956f4 AM |
3299 | { |
3300 | /* Allocate the structure if it has not already been allocated by a | |
3301 | subclass. */ | |
3302 | if (entry == NULL) | |
3303 | { | |
3304 | entry = bfd_hash_allocate (table, sizeof (struct ppc_stub_hash_entry)); | |
3305 | if (entry == NULL) | |
3306 | return entry; | |
3307 | } | |
3308 | ||
3309 | /* Call the allocation method of the superclass. */ | |
3310 | entry = bfd_hash_newfunc (entry, table, string); | |
3311 | if (entry != NULL) | |
3312 | { | |
3313 | struct ppc_stub_hash_entry *eh; | |
3314 | ||
3315 | /* Initialize the local fields. */ | |
3316 | eh = (struct ppc_stub_hash_entry *) entry; | |
ad8e1ba5 | 3317 | eh->stub_type = ppc_stub_none; |
6f20ed8a | 3318 | eh->group = NULL; |
721956f4 AM |
3319 | eh->stub_offset = 0; |
3320 | eh->target_value = 0; | |
3321 | eh->target_section = NULL; | |
721956f4 | 3322 | eh->h = NULL; |
6911b7dc | 3323 | eh->plt_ent = NULL; |
6911b7dc | 3324 | eh->other = 0; |
721956f4 AM |
3325 | } |
3326 | ||
3327 | return entry; | |
3328 | } | |
3329 | ||
3330 | /* Create an entry in the branch hash table. */ | |
3331 | ||
3332 | static struct bfd_hash_entry * | |
4ce794b7 AM |
3333 | branch_hash_newfunc (struct bfd_hash_entry *entry, |
3334 | struct bfd_hash_table *table, | |
3335 | const char *string) | |
721956f4 AM |
3336 | { |
3337 | /* Allocate the structure if it has not already been allocated by a | |
3338 | subclass. */ | |
3339 | if (entry == NULL) | |
3340 | { | |
3341 | entry = bfd_hash_allocate (table, sizeof (struct ppc_branch_hash_entry)); | |
3342 | if (entry == NULL) | |
3343 | return entry; | |
3344 | } | |
3345 | ||
3346 | /* Call the allocation method of the superclass. */ | |
3347 | entry = bfd_hash_newfunc (entry, table, string); | |
3348 | if (entry != NULL) | |
3349 | { | |
3350 | struct ppc_branch_hash_entry *eh; | |
3351 | ||
3352 | /* Initialize the local fields. */ | |
3353 | eh = (struct ppc_branch_hash_entry *) entry; | |
3354 | eh->offset = 0; | |
3355 | eh->iter = 0; | |
3356 | } | |
3357 | ||
3358 | return entry; | |
3359 | } | |
3360 | ||
65f38f15 AM |
3361 | /* Create an entry in a ppc64 ELF linker hash table. */ |
3362 | ||
3363 | static struct bfd_hash_entry * | |
4ce794b7 AM |
3364 | link_hash_newfunc (struct bfd_hash_entry *entry, |
3365 | struct bfd_hash_table *table, | |
3366 | const char *string) | |
65f38f15 AM |
3367 | { |
3368 | /* Allocate the structure if it has not already been allocated by a | |
3369 | subclass. */ | |
3370 | if (entry == NULL) | |
3371 | { | |
3372 | entry = bfd_hash_allocate (table, sizeof (struct ppc_link_hash_entry)); | |
3373 | if (entry == NULL) | |
3374 | return entry; | |
3375 | } | |
3376 | ||
3377 | /* Call the allocation method of the superclass. */ | |
3378 | entry = _bfd_elf_link_hash_newfunc (entry, table, string); | |
3379 | if (entry != NULL) | |
3380 | { | |
3381 | struct ppc_link_hash_entry *eh = (struct ppc_link_hash_entry *) entry; | |
3382 | ||
b3fac117 | 3383 | memset (&eh->u.stub_cache, 0, |
908b32fc | 3384 | (sizeof (struct ppc_link_hash_entry) |
b3fac117 AM |
3385 | - offsetof (struct ppc_link_hash_entry, u.stub_cache))); |
3386 | ||
3387 | /* When making function calls, old ABI code references function entry | |
3388 | points (dot symbols), while new ABI code references the function | |
3389 | descriptor symbol. We need to make any combination of reference and | |
3390 | definition work together, without breaking archive linking. | |
3391 | ||
3392 | For a defined function "foo" and an undefined call to "bar": | |
3393 | An old object defines "foo" and ".foo", references ".bar" (possibly | |
3394 | "bar" too). | |
3395 | A new object defines "foo" and references "bar". | |
3396 | ||
3397 | A new object thus has no problem with its undefined symbols being | |
3398 | satisfied by definitions in an old object. On the other hand, the | |
3399 | old object won't have ".bar" satisfied by a new object. | |
3400 | ||
3401 | Keep a list of newly added dot-symbols. */ | |
3402 | ||
3403 | if (string[0] == '.') | |
3404 | { | |
3405 | struct ppc_link_hash_table *htab; | |
3406 | ||
3407 | htab = (struct ppc_link_hash_table *) table; | |
3408 | eh->u.next_dot_sym = htab->dot_syms; | |
3409 | htab->dot_syms = eh; | |
3410 | } | |
65f38f15 AM |
3411 | } |
3412 | ||
3413 | return entry; | |
3414 | } | |
3415 | ||
2cdcc330 AM |
3416 | struct tocsave_entry |
3417 | { | |
3b421ab3 AM |
3418 | asection *sec; |
3419 | bfd_vma offset; | |
3420 | }; | |
3421 | ||
3422 | static hashval_t | |
3423 | tocsave_htab_hash (const void *p) | |
3424 | { | |
3425 | const struct tocsave_entry *e = (const struct tocsave_entry *) p; | |
4aef7643 | 3426 | return ((bfd_vma) (intptr_t) e->sec ^ e->offset) >> 3; |
3b421ab3 AM |
3427 | } |
3428 | ||
3429 | static int | |
3430 | tocsave_htab_eq (const void *p1, const void *p2) | |
3431 | { | |
3432 | const struct tocsave_entry *e1 = (const struct tocsave_entry *) p1; | |
3433 | const struct tocsave_entry *e2 = (const struct tocsave_entry *) p2; | |
3434 | return e1->sec == e2->sec && e1->offset == e2->offset; | |
3435 | } | |
3436 | ||
68faa637 AM |
3437 | /* Destroy a ppc64 ELF linker hash table. */ |
3438 | ||
3439 | static void | |
d495ab0d | 3440 | ppc64_elf_link_hash_table_free (bfd *obfd) |
68faa637 | 3441 | { |
d495ab0d | 3442 | struct ppc_link_hash_table *htab; |
68faa637 | 3443 | |
d495ab0d | 3444 | htab = (struct ppc_link_hash_table *) obfd->link.hash; |
68faa637 AM |
3445 | if (htab->tocsave_htab) |
3446 | htab_delete (htab->tocsave_htab); | |
d495ab0d AM |
3447 | bfd_hash_table_free (&htab->branch_hash_table); |
3448 | bfd_hash_table_free (&htab->stub_hash_table); | |
3449 | _bfd_elf_link_hash_table_free (obfd); | |
68faa637 AM |
3450 | } |
3451 | ||
65f38f15 AM |
3452 | /* Create a ppc64 ELF linker hash table. */ |
3453 | ||
3454 | static struct bfd_link_hash_table * | |
4ce794b7 | 3455 | ppc64_elf_link_hash_table_create (bfd *abfd) |
65f38f15 AM |
3456 | { |
3457 | struct ppc_link_hash_table *htab; | |
986f0783 | 3458 | size_t amt = sizeof (struct ppc_link_hash_table); |
65f38f15 | 3459 | |
4ce794b7 | 3460 | htab = bfd_zmalloc (amt); |
65f38f15 AM |
3461 | if (htab == NULL) |
3462 | return NULL; | |
3463 | ||
66eb6687 | 3464 | if (!_bfd_elf_link_hash_table_init (&htab->elf, abfd, link_hash_newfunc, |
4dfe6ac6 NC |
3465 | sizeof (struct ppc_link_hash_entry), |
3466 | PPC64_ELF_DATA)) | |
65f38f15 | 3467 | { |
e2d34d7d | 3468 | free (htab); |
65f38f15 AM |
3469 | return NULL; |
3470 | } | |
3471 | ||
721956f4 | 3472 | /* Init the stub hash table too. */ |
66eb6687 AM |
3473 | if (!bfd_hash_table_init (&htab->stub_hash_table, stub_hash_newfunc, |
3474 | sizeof (struct ppc_stub_hash_entry))) | |
2915c55b | 3475 | { |
d495ab0d | 3476 | _bfd_elf_link_hash_table_free (abfd); |
2915c55b JK |
3477 | return NULL; |
3478 | } | |
721956f4 AM |
3479 | |
3480 | /* And the branch hash table. */ | |
66eb6687 AM |
3481 | if (!bfd_hash_table_init (&htab->branch_hash_table, branch_hash_newfunc, |
3482 | sizeof (struct ppc_branch_hash_entry))) | |
2915c55b JK |
3483 | { |
3484 | bfd_hash_table_free (&htab->stub_hash_table); | |
d495ab0d | 3485 | _bfd_elf_link_hash_table_free (abfd); |
2915c55b JK |
3486 | return NULL; |
3487 | } | |
721956f4 | 3488 | |
3b421ab3 AM |
3489 | htab->tocsave_htab = htab_try_create (1024, |
3490 | tocsave_htab_hash, | |
3491 | tocsave_htab_eq, | |
3492 | NULL); | |
3493 | if (htab->tocsave_htab == NULL) | |
2915c55b | 3494 | { |
d495ab0d | 3495 | ppc64_elf_link_hash_table_free (abfd); |
2915c55b JK |
3496 | return NULL; |
3497 | } | |
d495ab0d | 3498 | htab->elf.root.hash_table_free = ppc64_elf_link_hash_table_free; |
3b421ab3 | 3499 | |
3254fd24 AM |
3500 | /* Initializing two fields of the union is just cosmetic. We really |
3501 | only care about glist, but when compiled on a 32-bit host the | |
3502 | bfd_vma fields are larger. Setting the bfd_vma to zero makes | |
3503 | debugger inspection of these fields look nicer. */ | |
a6aa5195 AM |
3504 | htab->elf.init_got_refcount.refcount = 0; |
3505 | htab->elf.init_got_refcount.glist = NULL; | |
3506 | htab->elf.init_plt_refcount.refcount = 0; | |
3507 | htab->elf.init_plt_refcount.glist = NULL; | |
3508 | htab->elf.init_got_offset.offset = 0; | |
3509 | htab->elf.init_got_offset.glist = NULL; | |
3510 | htab->elf.init_plt_offset.offset = 0; | |
3511 | htab->elf.init_plt_offset.glist = NULL; | |
3254fd24 | 3512 | |
65f38f15 AM |
3513 | return &htab->elf.root; |
3514 | } | |
3515 | ||
bfeb4a28 AM |
3516 | /* Create sections for linker generated code. */ |
3517 | ||
3518 | static bfd_boolean | |
3519 | create_linkage_sections (bfd *dynobj, struct bfd_link_info *info) | |
3520 | { | |
3521 | struct ppc_link_hash_table *htab; | |
3522 | flagword flags; | |
3523 | ||
3524 | htab = ppc_hash_table (info); | |
3525 | ||
bfeb4a28 AM |
3526 | flags = (SEC_ALLOC | SEC_LOAD | SEC_CODE | SEC_READONLY |
3527 | | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED); | |
b32547cd AM |
3528 | if (htab->params->save_restore_funcs) |
3529 | { | |
3530 | /* Create .sfpr for code to save and restore fp regs. */ | |
3531 | htab->sfpr = bfd_make_section_anyway_with_flags (dynobj, ".sfpr", | |
3532 | flags); | |
3533 | if (htab->sfpr == NULL | |
fd361982 | 3534 | || !bfd_set_section_alignment (htab->sfpr, 2)) |
b32547cd AM |
3535 | return FALSE; |
3536 | } | |
3537 | ||
3538 | if (bfd_link_relocatable (info)) | |
3539 | return TRUE; | |
bfeb4a28 AM |
3540 | |
3541 | /* Create .glink for lazy dynamic linking support. */ | |
3542 | htab->glink = bfd_make_section_anyway_with_flags (dynobj, ".glink", | |
3543 | flags); | |
3544 | if (htab->glink == NULL | |
fd361982 | 3545 | || !bfd_set_section_alignment (htab->glink, 3)) |
bfeb4a28 AM |
3546 | return FALSE; |
3547 | ||
9e390558 AM |
3548 | /* The part of .glink used by global entry stubs, separate so that |
3549 | it can be aligned appropriately without affecting htab->glink. */ | |
3550 | htab->global_entry = bfd_make_section_anyway_with_flags (dynobj, ".glink", | |
3551 | flags); | |
3552 | if (htab->global_entry == NULL | |
fd361982 | 3553 | || !bfd_set_section_alignment (htab->global_entry, 2)) |
9e390558 AM |
3554 | return FALSE; |
3555 | ||
bfeb4a28 AM |
3556 | if (!info->no_ld_generated_unwind_info) |
3557 | { | |
3558 | flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_HAS_CONTENTS | |
3559 | | SEC_IN_MEMORY | SEC_LINKER_CREATED); | |
3560 | htab->glink_eh_frame = bfd_make_section_anyway_with_flags (dynobj, | |
3561 | ".eh_frame", | |
3562 | flags); | |
3563 | if (htab->glink_eh_frame == NULL | |
fd361982 | 3564 | || !bfd_set_section_alignment (htab->glink_eh_frame, 2)) |
bfeb4a28 AM |
3565 | return FALSE; |
3566 | } | |
3567 | ||
3568 | flags = SEC_ALLOC | SEC_LINKER_CREATED; | |
33e44f2e AM |
3569 | htab->elf.iplt = bfd_make_section_anyway_with_flags (dynobj, ".iplt", flags); |
3570 | if (htab->elf.iplt == NULL | |
fd361982 | 3571 | || !bfd_set_section_alignment (htab->elf.iplt, 3)) |
bfeb4a28 AM |
3572 | return FALSE; |
3573 | ||
3574 | flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY | |
3575 | | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED); | |
33e44f2e AM |
3576 | htab->elf.irelplt |
3577 | = bfd_make_section_anyway_with_flags (dynobj, ".rela.iplt", flags); | |
3578 | if (htab->elf.irelplt == NULL | |
fd361982 | 3579 | || !bfd_set_section_alignment (htab->elf.irelplt, 3)) |
bfeb4a28 AM |
3580 | return FALSE; |
3581 | ||
3582 | /* Create branch lookup table for plt_branch stubs. */ | |
3583 | flags = (SEC_ALLOC | SEC_LOAD | |
3584 | | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED); | |
3585 | htab->brlt = bfd_make_section_anyway_with_flags (dynobj, ".branch_lt", | |
3586 | flags); | |
3587 | if (htab->brlt == NULL | |
fd361982 | 3588 | || !bfd_set_section_alignment (htab->brlt, 3)) |
bfeb4a28 AM |
3589 | return FALSE; |
3590 | ||
2d7ad24e AM |
3591 | /* Local plt entries, put in .branch_lt but a separate section for |
3592 | convenience. */ | |
3593 | htab->pltlocal = bfd_make_section_anyway_with_flags (dynobj, ".branch_lt", | |
3594 | flags); | |
3595 | if (htab->pltlocal == NULL | |
fd361982 | 3596 | || !bfd_set_section_alignment (htab->pltlocal, 3)) |
2d7ad24e AM |
3597 | return FALSE; |
3598 | ||
0e1862bb | 3599 | if (!bfd_link_pic (info)) |
bfeb4a28 AM |
3600 | return TRUE; |
3601 | ||
3602 | flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY | |
3603 | | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED); | |
2d7ad24e AM |
3604 | htab->relbrlt |
3605 | = bfd_make_section_anyway_with_flags (dynobj, ".rela.branch_lt", flags); | |
bfeb4a28 | 3606 | if (htab->relbrlt == NULL |
fd361982 | 3607 | || !bfd_set_section_alignment (htab->relbrlt, 3)) |
bfeb4a28 AM |
3608 | return FALSE; |
3609 | ||
2d7ad24e AM |
3610 | htab->relpltlocal |
3611 | = bfd_make_section_anyway_with_flags (dynobj, ".rela.branch_lt", flags); | |
3612 | if (htab->relpltlocal == NULL | |
fd361982 | 3613 | || !bfd_set_section_alignment (htab->relpltlocal, 3)) |
2d7ad24e AM |
3614 | return FALSE; |
3615 | ||
bfeb4a28 AM |
3616 | return TRUE; |
3617 | } | |
3618 | ||
e717da7e AM |
3619 | /* Satisfy the ELF linker by filling in some fields in our fake bfd. */ |
3620 | ||
bfeb4a28 | 3621 | bfd_boolean |
e7d1c40c AM |
3622 | ppc64_elf_init_stub_bfd (struct bfd_link_info *info, |
3623 | struct ppc64_elf_params *params) | |
e717da7e AM |
3624 | { |
3625 | struct ppc_link_hash_table *htab; | |
3626 | ||
e7d1c40c | 3627 | elf_elfheader (params->stub_bfd)->e_ident[EI_CLASS] = ELFCLASS64; |
e717da7e AM |
3628 | |
3629 | /* Always hook our dynamic sections into the first bfd, which is the | |
3630 | linker created stub bfd. This ensures that the GOT header is at | |
3631 | the start of the output TOC section. */ | |
3632 | htab = ppc_hash_table (info); | |
e7d1c40c AM |
3633 | htab->elf.dynobj = params->stub_bfd; |
3634 | htab->params = params; | |
bfeb4a28 | 3635 | |
bfeb4a28 | 3636 | return create_linkage_sections (htab->elf.dynobj, info); |
e717da7e AM |
3637 | } |
3638 | ||
721956f4 AM |
3639 | /* Build a name for an entry in the stub hash table. */ |
3640 | ||
3641 | static char * | |
4ce794b7 AM |
3642 | ppc_stub_name (const asection *input_section, |
3643 | const asection *sym_sec, | |
3644 | const struct ppc_link_hash_entry *h, | |
3645 | const Elf_Internal_Rela *rel) | |
721956f4 AM |
3646 | { |
3647 | char *stub_name; | |
bcaa2f82 | 3648 | ssize_t len; |
721956f4 AM |
3649 | |
3650 | /* rel->r_addend is actually 64 bit, but who uses more than +/- 2^31 | |
3651 | offsets from a sym as a branch target? In fact, we could | |
3652 | probably assume the addend is always zero. */ | |
3653 | BFD_ASSERT (((int) rel->r_addend & 0xffffffff) == rel->r_addend); | |
3654 | ||
3655 | if (h) | |
3656 | { | |
3657 | len = 8 + 1 + strlen (h->elf.root.root.string) + 1 + 8 + 1; | |
3658 | stub_name = bfd_malloc (len); | |
46de2a7c AM |
3659 | if (stub_name == NULL) |
3660 | return stub_name; | |
3661 | ||
bcaa2f82 AM |
3662 | len = sprintf (stub_name, "%08x.%s+%x", |
3663 | input_section->id & 0xffffffff, | |
3664 | h->elf.root.root.string, | |
3665 | (int) rel->r_addend & 0xffffffff); | |
721956f4 AM |
3666 | } |
3667 | else | |
3668 | { | |
ad8e1ba5 | 3669 | len = 8 + 1 + 8 + 1 + 8 + 1 + 8 + 1; |
721956f4 | 3670 | stub_name = bfd_malloc (len); |
46de2a7c AM |
3671 | if (stub_name == NULL) |
3672 | return stub_name; | |
3673 | ||
bcaa2f82 AM |
3674 | len = sprintf (stub_name, "%08x.%x:%x+%x", |
3675 | input_section->id & 0xffffffff, | |
3676 | sym_sec->id & 0xffffffff, | |
3677 | (int) ELF64_R_SYM (rel->r_info) & 0xffffffff, | |
3678 | (int) rel->r_addend & 0xffffffff); | |
721956f4 | 3679 | } |
bcaa2f82 | 3680 | if (len > 2 && stub_name[len - 2] == '+' && stub_name[len - 1] == '0') |
ee75fd95 | 3681 | stub_name[len - 2] = 0; |
721956f4 AM |
3682 | return stub_name; |
3683 | } | |
3684 | ||
d349c8e2 AM |
3685 | /* If mixing power10 with non-power10 code and --power10-stubs is not |
3686 | specified (or is auto) then calls using @notoc relocations that | |
3687 | need a stub will utilize power10 instructions in the stub, and | |
3688 | calls without @notoc relocations will not use power10 instructions. | |
3689 | The two classes of stubs are stored in separate stub_hash_table | |
3690 | entries having the same key string. The two entries will always be | |
3691 | adjacent on entry->root.next chain, even if hash table resizing | |
3692 | occurs. This function selects the correct entry to use. */ | |
3693 | ||
3694 | static struct ppc_stub_hash_entry * | |
3695 | select_alt_stub (struct ppc_stub_hash_entry *entry, bfd_boolean notoc) | |
3696 | { | |
3697 | bfd_boolean have_notoc; | |
3698 | ||
3699 | have_notoc = (entry->stub_type == ppc_stub_plt_call_notoc | |
3700 | || entry->stub_type == ppc_stub_plt_branch_notoc | |
3701 | || entry->stub_type == ppc_stub_long_branch_notoc); | |
3702 | ||
3703 | if (have_notoc != notoc) | |
3704 | { | |
3705 | const char *stub_name = entry->root.string; | |
3706 | ||
3707 | entry = (struct ppc_stub_hash_entry *) entry->root.next; | |
3708 | if (entry != NULL | |
3709 | && entry->root.string != stub_name) | |
3710 | entry = NULL; | |
3711 | } | |
3712 | ||
3713 | return entry; | |
3714 | } | |
3715 | ||
721956f4 AM |
3716 | /* Look up an entry in the stub hash. Stub entries are cached because |
3717 | creating the stub name takes a bit of time. */ | |
3718 | ||
3719 | static struct ppc_stub_hash_entry * | |
4ce794b7 AM |
3720 | ppc_get_stub_entry (const asection *input_section, |
3721 | const asection *sym_sec, | |
039b3fef | 3722 | struct ppc_link_hash_entry *h, |
4ce794b7 AM |
3723 | const Elf_Internal_Rela *rel, |
3724 | struct ppc_link_hash_table *htab) | |
721956f4 AM |
3725 | { |
3726 | struct ppc_stub_hash_entry *stub_entry; | |
6f20ed8a | 3727 | struct map_stub *group; |
721956f4 AM |
3728 | |
3729 | /* If this input section is part of a group of sections sharing one | |
3730 | stub section, then use the id of the first section in the group. | |
3731 | Stub names need to include a section id, as there may well be | |
3732 | more than one stub used to reach say, printf, and we need to | |
3733 | distinguish between them. */ | |
6f20ed8a | 3734 | group = htab->sec_info[input_section->id].u.group; |
89d77b8a AM |
3735 | if (group == NULL) |
3736 | return NULL; | |
721956f4 | 3737 | |
b3fac117 AM |
3738 | if (h != NULL && h->u.stub_cache != NULL |
3739 | && h->u.stub_cache->h == h | |
6f20ed8a | 3740 | && h->u.stub_cache->group == group) |
721956f4 | 3741 | { |
b3fac117 | 3742 | stub_entry = h->u.stub_cache; |
721956f4 AM |
3743 | } |
3744 | else | |
3745 | { | |
3746 | char *stub_name; | |
3747 | ||
6f20ed8a | 3748 | stub_name = ppc_stub_name (group->link_sec, sym_sec, h, rel); |
721956f4 AM |
3749 | if (stub_name == NULL) |
3750 | return NULL; | |
3751 | ||
3752 | stub_entry = ppc_stub_hash_lookup (&htab->stub_hash_table, | |
b34976b6 | 3753 | stub_name, FALSE, FALSE); |
721956f4 | 3754 | if (h != NULL) |
b3fac117 | 3755 | h->u.stub_cache = stub_entry; |
721956f4 AM |
3756 | |
3757 | free (stub_name); | |
3758 | } | |
3759 | ||
d349c8e2 AM |
3760 | if (stub_entry != NULL && htab->params->power10_stubs == -1) |
3761 | { | |
3762 | bfd_boolean notoc = ELF64_R_TYPE (rel->r_info) == R_PPC64_REL24_NOTOC; | |
3763 | ||
3764 | stub_entry = select_alt_stub (stub_entry, notoc); | |
3765 | } | |
3766 | ||
721956f4 AM |
3767 | return stub_entry; |
3768 | } | |
3769 | ||
3770 | /* Add a new stub entry to the stub hash. Not all fields of the new | |
3771 | stub entry are initialised. */ | |
3772 | ||
3773 | static struct ppc_stub_hash_entry * | |
4ce794b7 AM |
3774 | ppc_add_stub (const char *stub_name, |
3775 | asection *section, | |
25f53a85 | 3776 | struct bfd_link_info *info) |
721956f4 | 3777 | { |
25f53a85 | 3778 | struct ppc_link_hash_table *htab = ppc_hash_table (info); |
6f20ed8a | 3779 | struct map_stub *group; |
721956f4 AM |
3780 | asection *link_sec; |
3781 | asection *stub_sec; | |
3782 | struct ppc_stub_hash_entry *stub_entry; | |
3783 | ||
6f20ed8a AM |
3784 | group = htab->sec_info[section->id].u.group; |
3785 | link_sec = group->link_sec; | |
3786 | stub_sec = group->stub_sec; | |
721956f4 AM |
3787 | if (stub_sec == NULL) |
3788 | { | |
6f20ed8a AM |
3789 | size_t namelen; |
3790 | bfd_size_type len; | |
3791 | char *s_name; | |
721956f4 | 3792 | |
6f20ed8a AM |
3793 | namelen = strlen (link_sec->name); |
3794 | len = namelen + sizeof (STUB_SUFFIX); | |
3795 | s_name = bfd_alloc (htab->params->stub_bfd, len); | |
3796 | if (s_name == NULL) | |
3797 | return NULL; | |
721956f4 | 3798 | |
6f20ed8a AM |
3799 | memcpy (s_name, link_sec->name, namelen); |
3800 | memcpy (s_name + namelen, STUB_SUFFIX, sizeof (STUB_SUFFIX)); | |
3801 | stub_sec = (*htab->params->add_stub_section) (s_name, link_sec); | |
3802 | if (stub_sec == NULL) | |
3803 | return NULL; | |
3804 | group->stub_sec = stub_sec; | |
721956f4 AM |
3805 | } |
3806 | ||
3807 | /* Enter this entry into the linker stub hash table. */ | |
3808 | stub_entry = ppc_stub_hash_lookup (&htab->stub_hash_table, stub_name, | |
b34976b6 | 3809 | TRUE, FALSE); |
721956f4 AM |
3810 | if (stub_entry == NULL) |
3811 | { | |
695344c0 | 3812 | /* xgettext:c-format */ |
cf97bcb0 AM |
3813 | _bfd_error_handler (_("%pB: cannot create stub entry %s"), |
3814 | section->owner, stub_name); | |
721956f4 AM |
3815 | return NULL; |
3816 | } | |
3817 | ||
6f20ed8a | 3818 | stub_entry->group = group; |
721956f4 | 3819 | stub_entry->stub_offset = 0; |
721956f4 AM |
3820 | return stub_entry; |
3821 | } | |
3822 | ||
e717da7e AM |
3823 | /* Create .got and .rela.got sections in ABFD, and .got in dynobj if |
3824 | not already done. */ | |
65f38f15 | 3825 | |
b34976b6 | 3826 | static bfd_boolean |
e717da7e | 3827 | create_got_section (bfd *abfd, struct bfd_link_info *info) |
65f38f15 | 3828 | { |
e717da7e AM |
3829 | asection *got, *relgot; |
3830 | flagword flags; | |
3831 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
65f38f15 | 3832 | |
0c8d6e5c | 3833 | if (!is_ppc64_elf (abfd)) |
0ffa91dd | 3834 | return FALSE; |
4dfe6ac6 NC |
3835 | if (htab == NULL) |
3836 | return FALSE; | |
0ffa91dd | 3837 | |
33e44f2e AM |
3838 | if (!htab->elf.sgot |
3839 | && !_bfd_elf_create_got_section (htab->elf.dynobj, info)) | |
3840 | return FALSE; | |
e717da7e AM |
3841 | |
3842 | flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY | |
3843 | | SEC_LINKER_CREATED); | |
3844 | ||
c456f082 | 3845 | got = bfd_make_section_anyway_with_flags (abfd, ".got", flags); |
e717da7e | 3846 | if (!got |
fd361982 | 3847 | || !bfd_set_section_alignment (got, 3)) |
e717da7e | 3848 | return FALSE; |
65f38f15 | 3849 | |
c456f082 AM |
3850 | relgot = bfd_make_section_anyway_with_flags (abfd, ".rela.got", |
3851 | flags | SEC_READONLY); | |
e717da7e | 3852 | if (!relgot |
fd361982 | 3853 | || !bfd_set_section_alignment (relgot, 3)) |
b34976b6 | 3854 | return FALSE; |
e717da7e AM |
3855 | |
3856 | ppc64_elf_tdata (abfd)->got = got; | |
3857 | ppc64_elf_tdata (abfd)->relgot = relgot; | |
b34976b6 | 3858 | return TRUE; |
65f38f15 | 3859 | } |
5bd4f169 | 3860 | |
b31867b6 AM |
3861 | /* Follow indirect and warning symbol links. */ |
3862 | ||
3863 | static inline struct bfd_link_hash_entry * | |
3864 | follow_link (struct bfd_link_hash_entry *h) | |
3865 | { | |
3866 | while (h->type == bfd_link_hash_indirect | |
3867 | || h->type == bfd_link_hash_warning) | |
3868 | h = h->u.i.link; | |
3869 | return h; | |
3870 | } | |
3871 | ||
3872 | static inline struct elf_link_hash_entry * | |
3873 | elf_follow_link (struct elf_link_hash_entry *h) | |
3874 | { | |
3875 | return (struct elf_link_hash_entry *) follow_link (&h->root); | |
3876 | } | |
3877 | ||
3878 | static inline struct ppc_link_hash_entry * | |
3879 | ppc_follow_link (struct ppc_link_hash_entry *h) | |
3880 | { | |
ed7007c1 | 3881 | return ppc_elf_hash_entry (elf_follow_link (&h->elf)); |
b31867b6 AM |
3882 | } |
3883 | ||
40d16e0b AM |
3884 | /* Merge PLT info on FROM with that on TO. */ |
3885 | ||
3886 | static void | |
3887 | move_plt_plist (struct ppc_link_hash_entry *from, | |
3888 | struct ppc_link_hash_entry *to) | |
3889 | { | |
3890 | if (from->elf.plt.plist != NULL) | |
3891 | { | |
3892 | if (to->elf.plt.plist != NULL) | |
3893 | { | |
3894 | struct plt_entry **entp; | |
3895 | struct plt_entry *ent; | |
3896 | ||
3897 | for (entp = &from->elf.plt.plist; (ent = *entp) != NULL; ) | |
3898 | { | |
3899 | struct plt_entry *dent; | |
3900 | ||
3901 | for (dent = to->elf.plt.plist; dent != NULL; dent = dent->next) | |
3902 | if (dent->addend == ent->addend) | |
3903 | { | |
3904 | dent->plt.refcount += ent->plt.refcount; | |
3905 | *entp = ent->next; | |
3906 | break; | |
3907 | } | |
3908 | if (dent == NULL) | |
3909 | entp = &ent->next; | |
3910 | } | |
3911 | *entp = to->elf.plt.plist; | |
3912 | } | |
3913 | ||
3914 | to->elf.plt.plist = from->elf.plt.plist; | |
3915 | from->elf.plt.plist = NULL; | |
3916 | } | |
3917 | } | |
3918 | ||
65f38f15 AM |
3919 | /* Copy the extra info we tack onto an elf_link_hash_entry. */ |
3920 | ||
3921 | static void | |
fcfa13d2 AM |
3922 | ppc64_elf_copy_indirect_symbol (struct bfd_link_info *info, |
3923 | struct elf_link_hash_entry *dir, | |
3924 | struct elf_link_hash_entry *ind) | |
65f38f15 AM |
3925 | { |
3926 | struct ppc_link_hash_entry *edir, *eind; | |
3927 | ||
ed7007c1 AM |
3928 | edir = ppc_elf_hash_entry (dir); |
3929 | eind = ppc_elf_hash_entry (ind); | |
65f38f15 | 3930 | |
c79d6685 AM |
3931 | edir->is_func |= eind->is_func; |
3932 | edir->is_func_descriptor |= eind->is_func_descriptor; | |
3933 | edir->tls_mask |= eind->tls_mask; | |
3934 | if (eind->oh != NULL) | |
3935 | edir->oh = ppc_follow_link (eind->oh); | |
3936 | ||
474436e6 | 3937 | if (edir->elf.versioned != versioned_hidden) |
e81830c5 AM |
3938 | edir->elf.ref_dynamic |= eind->elf.ref_dynamic; |
3939 | edir->elf.ref_regular |= eind->elf.ref_regular; | |
3940 | edir->elf.ref_regular_nonweak |= eind->elf.ref_regular_nonweak; | |
4a7e5234 | 3941 | edir->elf.non_got_ref |= eind->elf.non_got_ref; |
e81830c5 AM |
3942 | edir->elf.needs_plt |= eind->elf.needs_plt; |
3943 | edir->elf.pointer_equality_needed |= eind->elf.pointer_equality_needed; | |
c79d6685 | 3944 | |
d311bc8b AM |
3945 | /* If we were called to copy over info for a weak sym, don't copy |
3946 | dyn_relocs, plt/got info, or dynindx. We used to copy dyn_relocs | |
3947 | in order to simplify readonly_dynrelocs and save a field in the | |
3948 | symbol hash entry, but that means dyn_relocs can't be used in any | |
3949 | tests about a specific symbol, or affect other symbol flags which | |
ab2477e1 | 3950 | are then tested. */ |
d311bc8b | 3951 | if (eind->elf.root.type != bfd_link_hash_indirect) |
ab2477e1 | 3952 | return; |
d311bc8b | 3953 | |
411e1bfb | 3954 | /* Copy over any dynamic relocs we may have on the indirect sym. */ |
190eb1dd | 3955 | if (ind->dyn_relocs != NULL) |
65f38f15 | 3956 | { |
190eb1dd | 3957 | if (dir->dyn_relocs != NULL) |
bbd7ec4a | 3958 | { |
6061a67d AM |
3959 | struct elf_dyn_relocs **pp; |
3960 | struct elf_dyn_relocs *p; | |
bbd7ec4a | 3961 | |
fcfa13d2 | 3962 | /* Add reloc counts against the indirect sym to the direct sym |
bbd7ec4a | 3963 | list. Merge any entries against the same section. */ |
190eb1dd | 3964 | for (pp = &ind->dyn_relocs; (p = *pp) != NULL; ) |
bbd7ec4a | 3965 | { |
6061a67d | 3966 | struct elf_dyn_relocs *q; |
bbd7ec4a | 3967 | |
190eb1dd | 3968 | for (q = dir->dyn_relocs; q != NULL; q = q->next) |
bbd7ec4a AM |
3969 | if (q->sec == p->sec) |
3970 | { | |
3971 | q->pc_count += p->pc_count; | |
3972 | q->count += p->count; | |
3973 | *pp = p->next; | |
3974 | break; | |
3975 | } | |
3976 | if (q == NULL) | |
3977 | pp = &p->next; | |
3978 | } | |
190eb1dd | 3979 | *pp = dir->dyn_relocs; |
bbd7ec4a AM |
3980 | } |
3981 | ||
190eb1dd L |
3982 | dir->dyn_relocs = ind->dyn_relocs; |
3983 | ind->dyn_relocs = NULL; | |
65f38f15 | 3984 | } |
65f38f15 | 3985 | |
81848ca0 AM |
3986 | /* Copy over got entries that we may have already seen to the |
3987 | symbol which just became indirect. */ | |
411e1bfb AM |
3988 | if (eind->elf.got.glist != NULL) |
3989 | { | |
3990 | if (edir->elf.got.glist != NULL) | |
3991 | { | |
3992 | struct got_entry **entp; | |
3993 | struct got_entry *ent; | |
3994 | ||
3995 | for (entp = &eind->elf.got.glist; (ent = *entp) != NULL; ) | |
3996 | { | |
3997 | struct got_entry *dent; | |
3998 | ||
3999 | for (dent = edir->elf.got.glist; dent != NULL; dent = dent->next) | |
4000 | if (dent->addend == ent->addend | |
e717da7e | 4001 | && dent->owner == ent->owner |
411e1bfb AM |
4002 | && dent->tls_type == ent->tls_type) |
4003 | { | |
4004 | dent->got.refcount += ent->got.refcount; | |
4005 | *entp = ent->next; | |
4006 | break; | |
4007 | } | |
4008 | if (dent == NULL) | |
4009 | entp = &ent->next; | |
4010 | } | |
4011 | *entp = edir->elf.got.glist; | |
4012 | } | |
4013 | ||
4014 | edir->elf.got.glist = eind->elf.got.glist; | |
4015 | eind->elf.got.glist = NULL; | |
4016 | } | |
4017 | ||
4018 | /* And plt entries. */ | |
40d16e0b | 4019 | move_plt_plist (eind, edir); |
411e1bfb | 4020 | |
fcfa13d2 | 4021 | if (eind->elf.dynindx != -1) |
411e1bfb | 4022 | { |
fcfa13d2 AM |
4023 | if (edir->elf.dynindx != -1) |
4024 | _bfd_elf_strtab_delref (elf_hash_table (info)->dynstr, | |
4025 | edir->elf.dynstr_index); | |
411e1bfb AM |
4026 | edir->elf.dynindx = eind->elf.dynindx; |
4027 | edir->elf.dynstr_index = eind->elf.dynstr_index; | |
4028 | eind->elf.dynindx = -1; | |
4029 | eind->elf.dynstr_index = 0; | |
4030 | } | |
411e1bfb AM |
4031 | } |
4032 | ||
8387904d AM |
4033 | /* Find the function descriptor hash entry from the given function code |
4034 | hash entry FH. Link the entries via their OH fields. */ | |
4035 | ||
4036 | static struct ppc_link_hash_entry * | |
b31867b6 | 4037 | lookup_fdh (struct ppc_link_hash_entry *fh, struct ppc_link_hash_table *htab) |
8387904d AM |
4038 | { |
4039 | struct ppc_link_hash_entry *fdh = fh->oh; | |
4040 | ||
4041 | if (fdh == NULL) | |
4042 | { | |
4043 | const char *fd_name = fh->elf.root.root.string + 1; | |
4044 | ||
ed7007c1 AM |
4045 | fdh = ppc_elf_hash_entry (elf_link_hash_lookup (&htab->elf, fd_name, |
4046 | FALSE, FALSE, FALSE)); | |
b31867b6 AM |
4047 | if (fdh == NULL) |
4048 | return fdh; | |
4049 | ||
4050 | fdh->is_func_descriptor = 1; | |
4051 | fdh->oh = fh; | |
4052 | fh->is_func = 1; | |
4053 | fh->oh = fdh; | |
8387904d AM |
4054 | } |
4055 | ||
8c5b4e52 AM |
4056 | fdh = ppc_follow_link (fdh); |
4057 | fdh->is_func_descriptor = 1; | |
4058 | fdh->oh = fh; | |
4059 | return fdh; | |
8387904d AM |
4060 | } |
4061 | ||
8c5b4e52 | 4062 | /* Make a fake function descriptor sym for the undefined code sym FH. */ |
bb700d78 AM |
4063 | |
4064 | static struct ppc_link_hash_entry * | |
4065 | make_fdh (struct bfd_link_info *info, | |
908b32fc | 4066 | struct ppc_link_hash_entry *fh) |
bb700d78 | 4067 | { |
8c5b4e52 AM |
4068 | bfd *abfd = fh->elf.root.u.undef.abfd; |
4069 | struct bfd_link_hash_entry *bh = NULL; | |
bb700d78 | 4070 | struct ppc_link_hash_entry *fdh; |
8c5b4e52 AM |
4071 | flagword flags = (fh->elf.root.type == bfd_link_hash_undefweak |
4072 | ? BSF_WEAK | |
4073 | : BSF_GLOBAL); | |
4074 | ||
4075 | if (!_bfd_generic_link_add_one_symbol (info, abfd, | |
4076 | fh->elf.root.root.string + 1, | |
4077 | flags, bfd_und_section_ptr, 0, | |
4078 | NULL, FALSE, FALSE, &bh)) | |
bb700d78 AM |
4079 | return NULL; |
4080 | ||
4081 | fdh = (struct ppc_link_hash_entry *) bh; | |
4082 | fdh->elf.non_elf = 0; | |
908b32fc AM |
4083 | fdh->fake = 1; |
4084 | fdh->is_func_descriptor = 1; | |
4085 | fdh->oh = fh; | |
4086 | fh->is_func = 1; | |
4087 | fh->oh = fdh; | |
bb700d78 AM |
4088 | return fdh; |
4089 | } | |
4090 | ||
8387904d AM |
4091 | /* Fix function descriptor symbols defined in .opd sections to be |
4092 | function type. */ | |
555cd476 AM |
4093 | |
4094 | static bfd_boolean | |
c16153ae | 4095 | ppc64_elf_add_symbol_hook (bfd *ibfd, |
e054468f | 4096 | struct bfd_link_info *info, |
555cd476 | 4097 | Elf_Internal_Sym *isym, |
6911b7dc | 4098 | const char **name, |
555cd476 AM |
4099 | flagword *flags ATTRIBUTE_UNUSED, |
4100 | asection **sec, | |
b53dfeb2 | 4101 | bfd_vma *value) |
555cd476 | 4102 | { |
b53dfeb2 | 4103 | if (*sec != NULL |
f1885d1e | 4104 | && strcmp ((*sec)->name, ".opd") == 0) |
b53dfeb2 AM |
4105 | { |
4106 | asection *code_sec; | |
4107 | ||
4108 | if (!(ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC | |
4109 | || ELF_ST_TYPE (isym->st_info) == STT_FUNC)) | |
4110 | isym->st_info = ELF_ST_INFO (ELF_ST_BIND (isym->st_info), STT_FUNC); | |
4111 | ||
4112 | /* If the symbol is a function defined in .opd, and the function | |
4113 | code is in a discarded group, let it appear to be undefined. */ | |
0e1862bb | 4114 | if (!bfd_link_relocatable (info) |
b53dfeb2 AM |
4115 | && (*sec)->reloc_count != 0 |
4116 | && opd_entry_value (*sec, *value, &code_sec, NULL, | |
4117 | FALSE) != (bfd_vma) -1 | |
4118 | && discarded_section (code_sec)) | |
4119 | { | |
4120 | *sec = bfd_und_section_ptr; | |
4121 | isym->st_shndx = SHN_UNDEF; | |
4122 | } | |
4123 | } | |
dbd1e97e AM |
4124 | else if (*sec != NULL |
4125 | && strcmp ((*sec)->name, ".toc") == 0 | |
4126 | && ELF_ST_TYPE (isym->st_info) == STT_OBJECT) | |
4127 | { | |
4128 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
4129 | if (htab != NULL) | |
4130 | htab->params->object_in_toc = 1; | |
4131 | } | |
433817dd | 4132 | |
6911b7dc AM |
4133 | if ((STO_PPC64_LOCAL_MASK & isym->st_other) != 0) |
4134 | { | |
4135 | if (abiversion (ibfd) == 0) | |
4136 | set_abiversion (ibfd, 2); | |
4137 | else if (abiversion (ibfd) == 1) | |
4138 | { | |
cf97bcb0 AM |
4139 | _bfd_error_handler (_("symbol '%s' has invalid st_other" |
4140 | " for ABI version 1"), *name); | |
6911b7dc AM |
4141 | bfd_set_error (bfd_error_bad_value); |
4142 | return FALSE; | |
4143 | } | |
4144 | } | |
4145 | ||
555cd476 AM |
4146 | return TRUE; |
4147 | } | |
4148 | ||
6911b7dc AM |
4149 | /* Merge non-visibility st_other attributes: local entry point. */ |
4150 | ||
4151 | static void | |
4152 | ppc64_elf_merge_symbol_attribute (struct elf_link_hash_entry *h, | |
4153 | const Elf_Internal_Sym *isym, | |
4154 | bfd_boolean definition, | |
4155 | bfd_boolean dynamic) | |
4156 | { | |
f378ab09 | 4157 | if (definition && (!dynamic || !h->def_regular)) |
6911b7dc AM |
4158 | h->other = ((isym->st_other & ~ELF_ST_VISIBILITY (-1)) |
4159 | | ELF_ST_VISIBILITY (h->other)); | |
4160 | } | |
4161 | ||
8c5b4e52 AM |
4162 | /* Hook called on merging a symbol. We use this to clear "fake" since |
4163 | we now have a real symbol. */ | |
4164 | ||
4165 | static bfd_boolean | |
4166 | ppc64_elf_merge_symbol (struct elf_link_hash_entry *h, | |
8b5f1ed8 | 4167 | const Elf_Internal_Sym *isym, |
8c5b4e52 AM |
4168 | asection **psec ATTRIBUTE_UNUSED, |
4169 | bfd_boolean newdef ATTRIBUTE_UNUSED, | |
4170 | bfd_boolean olddef ATTRIBUTE_UNUSED, | |
4171 | bfd *oldbfd ATTRIBUTE_UNUSED, | |
4172 | const asection *oldsec ATTRIBUTE_UNUSED) | |
4173 | { | |
ed7007c1 | 4174 | ppc_elf_hash_entry (h)->fake = 0; |
8b5f1ed8 | 4175 | if ((STO_PPC64_LOCAL_MASK & isym->st_other) != 0) |
ed7007c1 | 4176 | ppc_elf_hash_entry (h)->non_zero_localentry = 1; |
8c5b4e52 AM |
4177 | return TRUE; |
4178 | } | |
4179 | ||
8387904d | 4180 | /* This function makes an old ABI object reference to ".bar" cause the |
908b32fc AM |
4181 | inclusion of a new ABI object archive that defines "bar". |
4182 | NAME is a symbol defined in an archive. Return a symbol in the hash | |
4183 | table that might be satisfied by the archive symbols. */ | |
8387904d AM |
4184 | |
4185 | static struct elf_link_hash_entry * | |
4186 | ppc64_elf_archive_symbol_lookup (bfd *abfd, | |
4187 | struct bfd_link_info *info, | |
4188 | const char *name) | |
4189 | { | |
4190 | struct elf_link_hash_entry *h; | |
4191 | char *dot_name; | |
4192 | size_t len; | |
4193 | ||
4194 | h = _bfd_elf_archive_symbol_lookup (abfd, info, name); | |
908b32fc AM |
4195 | if (h != NULL |
4196 | /* Don't return this sym if it is a fake function descriptor | |
4197 | created by add_symbol_adjust. */ | |
ed7007c1 | 4198 | && !ppc_elf_hash_entry (h)->fake) |
8387904d AM |
4199 | return h; |
4200 | ||
4201 | if (name[0] == '.') | |
4202 | return h; | |
4203 | ||
4204 | len = strlen (name); | |
4205 | dot_name = bfd_alloc (abfd, len + 2); | |
4206 | if (dot_name == NULL) | |
e99955cd | 4207 | return (struct elf_link_hash_entry *) -1; |
8387904d AM |
4208 | dot_name[0] = '.'; |
4209 | memcpy (dot_name + 1, name, len + 1); | |
4210 | h = _bfd_elf_archive_symbol_lookup (abfd, info, dot_name); | |
4211 | bfd_release (abfd, dot_name); | |
a804e476 AM |
4212 | if (h != NULL) |
4213 | return h; | |
4214 | ||
4215 | if (strcmp (name, "__tls_get_addr_opt") == 0) | |
4216 | h = _bfd_elf_archive_symbol_lookup (abfd, info, "__tls_get_addr_desc"); | |
8387904d AM |
4217 | return h; |
4218 | } | |
4219 | ||
4220 | /* This function satisfies all old ABI object references to ".bar" if a | |
99877b66 AM |
4221 | new ABI object defines "bar". Well, at least, undefined dot symbols |
4222 | are made weak. This stops later archive searches from including an | |
4223 | object if we already have a function descriptor definition. It also | |
35b0ce59 AM |
4224 | prevents the linker complaining about undefined symbols. |
4225 | We also check and correct mismatched symbol visibility here. The | |
4226 | most restrictive visibility of the function descriptor and the | |
4227 | function entry symbol is used. */ | |
8387904d AM |
4228 | |
4229 | static bfd_boolean | |
b3fac117 | 4230 | add_symbol_adjust (struct ppc_link_hash_entry *eh, struct bfd_link_info *info) |
8387904d | 4231 | { |
8387904d AM |
4232 | struct ppc_link_hash_table *htab; |
4233 | struct ppc_link_hash_entry *fdh; | |
4234 | ||
b3fac117 AM |
4235 | if (eh->elf.root.type == bfd_link_hash_warning) |
4236 | eh = (struct ppc_link_hash_entry *) eh->elf.root.u.i.link; | |
8387904d | 4237 | |
8400d40d AM |
4238 | if (eh->elf.root.type == bfd_link_hash_indirect) |
4239 | return TRUE; | |
4240 | ||
b3fac117 AM |
4241 | if (eh->elf.root.root.string[0] != '.') |
4242 | abort (); | |
8387904d | 4243 | |
b3fac117 | 4244 | htab = ppc_hash_table (info); |
4dfe6ac6 NC |
4245 | if (htab == NULL) |
4246 | return FALSE; | |
4247 | ||
b31867b6 | 4248 | fdh = lookup_fdh (eh, htab); |
8c5b4e52 AM |
4249 | if (fdh == NULL |
4250 | && !bfd_link_relocatable (info) | |
4251 | && (eh->elf.root.type == bfd_link_hash_undefined | |
4252 | || eh->elf.root.type == bfd_link_hash_undefweak) | |
4253 | && eh->elf.ref_regular) | |
4254 | { | |
4255 | /* Make an undefined function descriptor sym, in order to | |
4256 | pull in an --as-needed shared lib. Archives are handled | |
4257 | elsewhere. */ | |
4258 | fdh = make_fdh (info, eh); | |
4259 | if (fdh == NULL) | |
4260 | return FALSE; | |
bb700d78 | 4261 | } |
8c5b4e52 AM |
4262 | |
4263 | if (fdh != NULL) | |
8387904d | 4264 | { |
35b0ce59 AM |
4265 | unsigned entry_vis = ELF_ST_VISIBILITY (eh->elf.other) - 1; |
4266 | unsigned descr_vis = ELF_ST_VISIBILITY (fdh->elf.other) - 1; | |
8c5b4e52 AM |
4267 | |
4268 | /* Make both descriptor and entry symbol have the most | |
4269 | constraining visibility of either symbol. */ | |
35b0ce59 AM |
4270 | if (entry_vis < descr_vis) |
4271 | fdh->elf.other += entry_vis - descr_vis; | |
4272 | else if (entry_vis > descr_vis) | |
4273 | eh->elf.other += descr_vis - entry_vis; | |
4274 | ||
8c5b4e52 AM |
4275 | /* Propagate reference flags from entry symbol to function |
4276 | descriptor symbol. */ | |
bc4e12de | 4277 | fdh->elf.root.non_ir_ref_regular |= eh->elf.root.non_ir_ref_regular; |
4070765b | 4278 | fdh->elf.root.non_ir_ref_dynamic |= eh->elf.root.non_ir_ref_dynamic; |
8c5b4e52 AM |
4279 | fdh->elf.ref_regular |= eh->elf.ref_regular; |
4280 | fdh->elf.ref_regular_nonweak |= eh->elf.ref_regular_nonweak; | |
4281 | ||
4282 | if (!fdh->elf.forced_local | |
4283 | && fdh->elf.dynindx == -1 | |
4284 | && fdh->elf.versioned != versioned_hidden | |
4285 | && (bfd_link_dll (info) | |
4286 | || fdh->elf.def_dynamic | |
4287 | || fdh->elf.ref_dynamic) | |
4288 | && (eh->elf.ref_regular | |
4289 | || eh->elf.def_regular)) | |
4290 | { | |
2cdcc330 | 4291 | if (!bfd_elf_link_record_dynamic_symbol (info, &fdh->elf)) |
8c5b4e52 | 4292 | return FALSE; |
35b0ce59 | 4293 | } |
8387904d | 4294 | } |
99877b66 | 4295 | |
8387904d AM |
4296 | return TRUE; |
4297 | } | |
4298 | ||
f6c7c3e8 AM |
4299 | /* Set up opd section info and abiversion for IBFD, and process list |
4300 | of dot-symbols we made in link_hash_newfunc. */ | |
b3fac117 | 4301 | |
8387904d | 4302 | static bfd_boolean |
f6c7c3e8 | 4303 | ppc64_elf_before_check_relocs (bfd *ibfd, struct bfd_link_info *info) |
8387904d | 4304 | { |
99877b66 | 4305 | struct ppc_link_hash_table *htab; |
b3fac117 | 4306 | struct ppc_link_hash_entry **p, *eh; |
459609d6 | 4307 | asection *opd = bfd_get_section_by_name (ibfd, ".opd"); |
433817dd | 4308 | |
459609d6 | 4309 | if (opd != NULL && opd->size != 0) |
b3fac117 | 4310 | { |
b9399fcf AM |
4311 | BFD_ASSERT (ppc64_elf_section_data (opd)->sec_type == sec_normal); |
4312 | ppc64_elf_section_data (opd)->sec_type = sec_opd; | |
4313 | ||
459609d6 AM |
4314 | if (abiversion (ibfd) == 0) |
4315 | set_abiversion (ibfd, 1); | |
8a2058b5 | 4316 | else if (abiversion (ibfd) >= 2) |
f6c7c3e8 | 4317 | { |
695344c0 | 4318 | /* xgettext:c-format */ |
cf97bcb0 AM |
4319 | _bfd_error_handler (_("%pB .opd not allowed in ABI version %d"), |
4320 | ibfd, abiversion (ibfd)); | |
459609d6 AM |
4321 | bfd_set_error (bfd_error_bad_value); |
4322 | return FALSE; | |
f6c7c3e8 | 4323 | } |
b9399fcf | 4324 | } |
f6c7c3e8 | 4325 | |
b9399fcf AM |
4326 | if (is_ppc64_elf (info->output_bfd)) |
4327 | { | |
4328 | /* For input files without an explicit abiversion in e_flags | |
4329 | we should have flagged any with symbol st_other bits set | |
4330 | as ELFv1 and above flagged those with .opd as ELFv2. | |
4331 | Set the output abiversion if not yet set, and for any input | |
4332 | still ambiguous, take its abiversion from the output. | |
4333 | Differences in ABI are reported later. */ | |
4334 | if (abiversion (info->output_bfd) == 0) | |
4335 | set_abiversion (info->output_bfd, abiversion (ibfd)); | |
4336 | else if (abiversion (ibfd) == 0) | |
4337 | set_abiversion (ibfd, abiversion (info->output_bfd)); | |
b3fac117 AM |
4338 | } |
4339 | ||
459609d6 AM |
4340 | htab = ppc_hash_table (info); |
4341 | if (htab == NULL) | |
b9399fcf | 4342 | return TRUE; |
459609d6 | 4343 | |
b9399fcf AM |
4344 | if (opd != NULL && opd->size != 0 |
4345 | && (ibfd->flags & DYNAMIC) == 0 | |
4346 | && (opd->flags & SEC_RELOC) != 0 | |
4347 | && opd->reloc_count != 0 | |
4348 | && !bfd_is_abs_section (opd->output_section) | |
4349 | && info->gc_sections) | |
4350 | { | |
4351 | /* Garbage collection needs some extra help with .opd sections. | |
4352 | We don't want to necessarily keep everything referenced by | |
4353 | relocs in .opd, as that would keep all functions. Instead, | |
4354 | if we reference an .opd symbol (a function descriptor), we | |
4355 | want to keep the function code symbol's section. This is | |
4356 | easy for global symbols, but for local syms we need to keep | |
4357 | information about the associated function section. */ | |
4358 | bfd_size_type amt; | |
4359 | asection **opd_sym_map; | |
4360 | Elf_Internal_Shdr *symtab_hdr; | |
4361 | Elf_Internal_Rela *relocs, *rel_end, *rel; | |
4362 | ||
4363 | amt = OPD_NDX (opd->size) * sizeof (*opd_sym_map); | |
4364 | opd_sym_map = bfd_zalloc (ibfd, amt); | |
4365 | if (opd_sym_map == NULL) | |
4366 | return FALSE; | |
4367 | ppc64_elf_section_data (opd)->u.opd.func_sec = opd_sym_map; | |
4368 | relocs = _bfd_elf_link_read_relocs (ibfd, opd, NULL, NULL, | |
4369 | info->keep_memory); | |
4370 | if (relocs == NULL) | |
4371 | return FALSE; | |
4372 | symtab_hdr = &elf_symtab_hdr (ibfd); | |
4373 | rel_end = relocs + opd->reloc_count - 1; | |
4374 | for (rel = relocs; rel < rel_end; rel++) | |
4375 | { | |
4376 | enum elf_ppc64_reloc_type r_type = ELF64_R_TYPE (rel->r_info); | |
4377 | unsigned long r_symndx = ELF64_R_SYM (rel->r_info); | |
4378 | ||
4379 | if (r_type == R_PPC64_ADDR64 | |
4380 | && ELF64_R_TYPE ((rel + 1)->r_info) == R_PPC64_TOC | |
4381 | && r_symndx < symtab_hdr->sh_info) | |
4382 | { | |
4383 | Elf_Internal_Sym *isym; | |
4384 | asection *s; | |
4385 | ||
4386 | isym = bfd_sym_from_r_symndx (&htab->sym_cache, ibfd, r_symndx); | |
4387 | if (isym == NULL) | |
4388 | { | |
4389 | if (elf_section_data (opd)->relocs != relocs) | |
4390 | free (relocs); | |
4391 | return FALSE; | |
4392 | } | |
4393 | ||
4394 | s = bfd_section_from_elf_index (ibfd, isym->st_shndx); | |
4395 | if (s != NULL && s != opd) | |
4396 | opd_sym_map[OPD_NDX (rel->r_offset)] = s; | |
4397 | } | |
4398 | } | |
4399 | if (elf_section_data (opd)->relocs != relocs) | |
4400 | free (relocs); | |
4401 | } | |
459609d6 AM |
4402 | |
4403 | p = &htab->dot_syms; | |
4404 | while ((eh = *p) != NULL) | |
4405 | { | |
4406 | *p = NULL; | |
4407 | if (&eh->elf == htab->elf.hgot) | |
4408 | ; | |
4409 | else if (htab->elf.hgot == NULL | |
4410 | && strcmp (eh->elf.root.root.string, ".TOC.") == 0) | |
4411 | htab->elf.hgot = &eh->elf; | |
8c5b4e52 AM |
4412 | else if (abiversion (ibfd) <= 1) |
4413 | { | |
4414 | htab->need_func_desc_adj = 1; | |
4415 | if (!add_symbol_adjust (eh, info)) | |
4416 | return FALSE; | |
4417 | } | |
459609d6 AM |
4418 | p = &eh->u.next_dot_sym; |
4419 | } | |
b3fac117 | 4420 | return TRUE; |
8387904d AM |
4421 | } |
4422 | ||
97fed1c9 JJ |
4423 | /* Undo hash table changes when an --as-needed input file is determined |
4424 | not to be needed. */ | |
4425 | ||
4426 | static bfd_boolean | |
e5034e59 AM |
4427 | ppc64_elf_notice_as_needed (bfd *ibfd, |
4428 | struct bfd_link_info *info, | |
4429 | enum notice_asneeded_action act) | |
97fed1c9 | 4430 | { |
e5034e59 AM |
4431 | if (act == notice_not_needed) |
4432 | { | |
4433 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
4dfe6ac6 | 4434 | |
e5034e59 AM |
4435 | if (htab == NULL) |
4436 | return FALSE; | |
4dfe6ac6 | 4437 | |
e5034e59 AM |
4438 | htab->dot_syms = NULL; |
4439 | } | |
4440 | return _bfd_elf_notice_as_needed (ibfd, info, act); | |
97fed1c9 JJ |
4441 | } |
4442 | ||
aa374f67 AM |
4443 | /* If --just-symbols against a final linked binary, then assume we need |
4444 | toc adjusting stubs when calling functions defined there. */ | |
4445 | ||
4446 | static void | |
4447 | ppc64_elf_link_just_syms (asection *sec, struct bfd_link_info *info) | |
4448 | { | |
4449 | if ((sec->flags & SEC_CODE) != 0 | |
4450 | && (sec->owner->flags & (EXEC_P | DYNAMIC)) != 0 | |
4451 | && is_ppc64_elf (sec->owner)) | |
4452 | { | |
2c3f079f AM |
4453 | if (abiversion (sec->owner) >= 2 |
4454 | || bfd_get_section_by_name (sec->owner, ".opd") != NULL) | |
aa374f67 AM |
4455 | sec->has_toc_reloc = 1; |
4456 | } | |
4457 | _bfd_elf_link_just_syms (sec, info); | |
4458 | } | |
4459 | ||
e054468f | 4460 | static struct plt_entry ** |
4ce794b7 AM |
4461 | update_local_sym_info (bfd *abfd, Elf_Internal_Shdr *symtab_hdr, |
4462 | unsigned long r_symndx, bfd_vma r_addend, int tls_type) | |
411e1bfb AM |
4463 | { |
4464 | struct got_entry **local_got_ents = elf_local_got_ents (abfd); | |
e054468f | 4465 | struct plt_entry **local_plt; |
f961d9dd | 4466 | unsigned char *local_got_tls_masks; |
411e1bfb AM |
4467 | |
4468 | if (local_got_ents == NULL) | |
4469 | { | |
4470 | bfd_size_type size = symtab_hdr->sh_info; | |
4471 | ||
e054468f AM |
4472 | size *= (sizeof (*local_got_ents) |
4473 | + sizeof (*local_plt) | |
4474 | + sizeof (*local_got_tls_masks)); | |
4ce794b7 | 4475 | local_got_ents = bfd_zalloc (abfd, size); |
411e1bfb | 4476 | if (local_got_ents == NULL) |
e054468f | 4477 | return NULL; |
411e1bfb AM |
4478 | elf_local_got_ents (abfd) = local_got_ents; |
4479 | } | |
4480 | ||
37da22e5 | 4481 | if ((tls_type & (NON_GOT | TLS_EXPLICIT)) == 0) |
411e1bfb AM |
4482 | { |
4483 | struct got_entry *ent; | |
4484 | ||
4485 | for (ent = local_got_ents[r_symndx]; ent != NULL; ent = ent->next) | |
e717da7e AM |
4486 | if (ent->addend == r_addend |
4487 | && ent->owner == abfd | |
4488 | && ent->tls_type == tls_type) | |
411e1bfb AM |
4489 | break; |
4490 | if (ent == NULL) | |
4491 | { | |
986f0783 | 4492 | size_t amt = sizeof (*ent); |
4ce794b7 | 4493 | ent = bfd_alloc (abfd, amt); |
411e1bfb AM |
4494 | if (ent == NULL) |
4495 | return FALSE; | |
4496 | ent->next = local_got_ents[r_symndx]; | |
4497 | ent->addend = r_addend; | |
e717da7e | 4498 | ent->owner = abfd; |
411e1bfb | 4499 | ent->tls_type = tls_type; |
927be08e | 4500 | ent->is_indirect = FALSE; |
411e1bfb AM |
4501 | ent->got.refcount = 0; |
4502 | local_got_ents[r_symndx] = ent; | |
4503 | } | |
4504 | ent->got.refcount += 1; | |
4505 | } | |
4506 | ||
e054468f | 4507 | local_plt = (struct plt_entry **) (local_got_ents + symtab_hdr->sh_info); |
f961d9dd | 4508 | local_got_tls_masks = (unsigned char *) (local_plt + symtab_hdr->sh_info); |
37da22e5 | 4509 | local_got_tls_masks[r_symndx] |= tls_type & 0xff; |
e054468f AM |
4510 | |
4511 | return local_plt + r_symndx; | |
65f38f15 AM |
4512 | } |
4513 | ||
411e1bfb | 4514 | static bfd_boolean |
e054468f | 4515 | update_plt_info (bfd *abfd, struct plt_entry **plist, bfd_vma addend) |
1e2f5b6e | 4516 | { |
411e1bfb | 4517 | struct plt_entry *ent; |
1e2f5b6e | 4518 | |
e054468f | 4519 | for (ent = *plist; ent != NULL; ent = ent->next) |
411e1bfb AM |
4520 | if (ent->addend == addend) |
4521 | break; | |
4522 | if (ent == NULL) | |
1e2f5b6e | 4523 | { |
986f0783 | 4524 | size_t amt = sizeof (*ent); |
4ce794b7 | 4525 | ent = bfd_alloc (abfd, amt); |
411e1bfb AM |
4526 | if (ent == NULL) |
4527 | return FALSE; | |
e054468f | 4528 | ent->next = *plist; |
411e1bfb AM |
4529 | ent->addend = addend; |
4530 | ent->plt.refcount = 0; | |
e054468f | 4531 | *plist = ent; |
1e2f5b6e | 4532 | } |
411e1bfb | 4533 | ent->plt.refcount += 1; |
b34976b6 | 4534 | return TRUE; |
1e2f5b6e AM |
4535 | } |
4536 | ||
e054468f AM |
4537 | static bfd_boolean |
4538 | is_branch_reloc (enum elf_ppc64_reloc_type r_type) | |
4539 | { | |
4540 | return (r_type == R_PPC64_REL24 | |
05d0e962 | 4541 | || r_type == R_PPC64_REL24_NOTOC |
e054468f AM |
4542 | || r_type == R_PPC64_REL14 |
4543 | || r_type == R_PPC64_REL14_BRTAKEN | |
4544 | || r_type == R_PPC64_REL14_BRNTAKEN | |
4545 | || r_type == R_PPC64_ADDR24 | |
4546 | || r_type == R_PPC64_ADDR14 | |
4547 | || r_type == R_PPC64_ADDR14_BRTAKEN | |
23cedd1d | 4548 | || r_type == R_PPC64_ADDR14_BRNTAKEN |
5663e321 AM |
4549 | || r_type == R_PPC64_PLTCALL |
4550 | || r_type == R_PPC64_PLTCALL_NOTOC); | |
23cedd1d AM |
4551 | } |
4552 | ||
4553 | /* Relocs on inline plt call sequence insns prior to the call. */ | |
4554 | ||
4555 | static bfd_boolean | |
4556 | is_plt_seq_reloc (enum elf_ppc64_reloc_type r_type) | |
4557 | { | |
4558 | return (r_type == R_PPC64_PLT16_HA | |
4559 | || r_type == R_PPC64_PLT16_HI | |
4560 | || r_type == R_PPC64_PLT16_LO | |
4561 | || r_type == R_PPC64_PLT16_LO_DS | |
5663e321 AM |
4562 | || r_type == R_PPC64_PLT_PCREL34 |
4563 | || r_type == R_PPC64_PLT_PCREL34_NOTOC | |
4564 | || r_type == R_PPC64_PLTSEQ | |
4565 | || r_type == R_PPC64_PLTSEQ_NOTOC); | |
e054468f AM |
4566 | } |
4567 | ||
5bd4f169 | 4568 | /* Look through the relocs for a section during the first phase, and |
65f38f15 | 4569 | calculate needed space in the global offset table, procedure |
5d1634d7 | 4570 | linkage table, and dynamic reloc sections. */ |
5bd4f169 | 4571 | |
b34976b6 | 4572 | static bfd_boolean |
4ce794b7 AM |
4573 | ppc64_elf_check_relocs (bfd *abfd, struct bfd_link_info *info, |
4574 | asection *sec, const Elf_Internal_Rela *relocs) | |
5bd4f169 | 4575 | { |
65f38f15 | 4576 | struct ppc_link_hash_table *htab; |
5bd4f169 | 4577 | Elf_Internal_Shdr *symtab_hdr; |
c7e2358a | 4578 | struct elf_link_hash_entry **sym_hashes; |
5bd4f169 AM |
4579 | const Elf_Internal_Rela *rel; |
4580 | const Elf_Internal_Rela *rel_end; | |
5bd4f169 | 4581 | asection *sreloc; |
3a71aa26 | 4582 | struct elf_link_hash_entry *tga, *dottga; |
b9399fcf | 4583 | bfd_boolean is_opd; |
5bd4f169 | 4584 | |
0e1862bb | 4585 | if (bfd_link_relocatable (info)) |
b34976b6 | 4586 | return TRUE; |
5bd4f169 | 4587 | |
0c8d6e5c | 4588 | BFD_ASSERT (is_ppc64_elf (abfd)); |
0ffa91dd | 4589 | |
65f38f15 | 4590 | htab = ppc_hash_table (info); |
4dfe6ac6 NC |
4591 | if (htab == NULL) |
4592 | return FALSE; | |
4593 | ||
3a71aa26 AM |
4594 | tga = elf_link_hash_lookup (&htab->elf, "__tls_get_addr", |
4595 | FALSE, FALSE, TRUE); | |
4596 | dottga = elf_link_hash_lookup (&htab->elf, ".__tls_get_addr", | |
4597 | FALSE, FALSE, TRUE); | |
0ffa91dd | 4598 | symtab_hdr = &elf_symtab_hdr (abfd); |
5bd4f169 | 4599 | sym_hashes = elf_sym_hashes (abfd); |
5bd4f169 | 4600 | sreloc = NULL; |
b9399fcf | 4601 | is_opd = ppc64_elf_section_data (sec)->sec_type == sec_opd; |
5bd4f169 AM |
4602 | rel_end = relocs + sec->reloc_count; |
4603 | for (rel = relocs; rel < rel_end; rel++) | |
4604 | { | |
4605 | unsigned long r_symndx; | |
4606 | struct elf_link_hash_entry *h; | |
04c9666a | 4607 | enum elf_ppc64_reloc_type r_type; |
727fc41e | 4608 | int tls_type; |
7c8fe5c4 | 4609 | struct _ppc64_elf_section_data *ppc64_sec; |
cbf95972 | 4610 | struct plt_entry **ifunc, **plt_list; |
5bd4f169 AM |
4611 | |
4612 | r_symndx = ELF64_R_SYM (rel->r_info); | |
4613 | if (r_symndx < symtab_hdr->sh_info) | |
4614 | h = NULL; | |
4615 | else | |
973a3492 L |
4616 | { |
4617 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; | |
b31867b6 | 4618 | h = elf_follow_link (h); |
1c865ab2 AM |
4619 | |
4620 | if (h == htab->elf.hgot) | |
4621 | sec->has_toc_reloc = 1; | |
973a3492 | 4622 | } |
5bd4f169 | 4623 | |
5663e321 AM |
4624 | r_type = ELF64_R_TYPE (rel->r_info); |
4625 | switch (r_type) | |
4626 | { | |
04bdff6a AM |
4627 | case R_PPC64_D34: |
4628 | case R_PPC64_D34_LO: | |
4629 | case R_PPC64_D34_HI30: | |
4630 | case R_PPC64_D34_HA30: | |
4631 | case R_PPC64_D28: | |
c213164a AM |
4632 | case R_PPC64_TPREL34: |
4633 | case R_PPC64_DTPREL34: | |
04bdff6a | 4634 | case R_PPC64_PCREL34: |
5663e321 | 4635 | case R_PPC64_GOT_PCREL34: |
87c69f97 AM |
4636 | case R_PPC64_GOT_TLSGD_PCREL34: |
4637 | case R_PPC64_GOT_TLSLD_PCREL34: | |
4638 | case R_PPC64_GOT_TPREL_PCREL34: | |
4639 | case R_PPC64_GOT_DTPREL_PCREL34: | |
5663e321 AM |
4640 | case R_PPC64_PLT_PCREL34: |
4641 | case R_PPC64_PLT_PCREL34_NOTOC: | |
04bdff6a | 4642 | case R_PPC64_PCREL28: |
d349c8e2 | 4643 | htab->has_power10_relocs = 1; |
133a1f60 AM |
4644 | break; |
4645 | default: | |
5663e321 AM |
4646 | break; |
4647 | } | |
903b777d AM |
4648 | |
4649 | switch (r_type) | |
4650 | { | |
4651 | case R_PPC64_PLT16_HA: | |
4652 | case R_PPC64_GOT_TLSLD16_HA: | |
4653 | case R_PPC64_GOT_TLSGD16_HA: | |
4654 | case R_PPC64_GOT_TPREL16_HA: | |
4655 | case R_PPC64_GOT_DTPREL16_HA: | |
4656 | case R_PPC64_GOT16_HA: | |
4657 | case R_PPC64_TOC16_HA: | |
4658 | case R_PPC64_PLT16_LO: | |
4659 | case R_PPC64_PLT16_LO_DS: | |
4660 | case R_PPC64_GOT_TLSLD16_LO: | |
4661 | case R_PPC64_GOT_TLSGD16_LO: | |
4662 | case R_PPC64_GOT_TPREL16_LO_DS: | |
4663 | case R_PPC64_GOT_DTPREL16_LO_DS: | |
4664 | case R_PPC64_GOT16_LO: | |
4665 | case R_PPC64_GOT16_LO_DS: | |
4666 | case R_PPC64_TOC16_LO: | |
4667 | case R_PPC64_TOC16_LO_DS: | |
4668 | case R_PPC64_GOT_PCREL34: | |
4669 | ppc64_elf_tdata (abfd)->has_optrel = 1; | |
4670 | ppc64_elf_section_data (sec)->has_optrel = 1; | |
4671 | break; | |
4672 | default: | |
4673 | break; | |
4674 | } | |
4675 | ||
f749f26e | 4676 | ifunc = NULL; |
25f23106 AM |
4677 | if (h != NULL) |
4678 | { | |
4679 | if (h->type == STT_GNU_IFUNC) | |
4680 | { | |
4681 | h->needs_plt = 1; | |
4682 | ifunc = &h->plt.plist; | |
4683 | } | |
4684 | } | |
4685 | else | |
4686 | { | |
4687 | Elf_Internal_Sym *isym = bfd_sym_from_r_symndx (&htab->sym_cache, | |
4688 | abfd, r_symndx); | |
4689 | if (isym == NULL) | |
4690 | return FALSE; | |
4691 | ||
4692 | if (ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC) | |
4693 | { | |
4694 | ifunc = update_local_sym_info (abfd, symtab_hdr, r_symndx, | |
133a1f60 | 4695 | rel->r_addend, |
37da22e5 | 4696 | NON_GOT | PLT_IFUNC); |
25f23106 AM |
4697 | if (ifunc == NULL) |
4698 | return FALSE; | |
4699 | } | |
4700 | } | |
727fc41e | 4701 | |
f749f26e | 4702 | tls_type = 0; |
a33d1f77 | 4703 | switch (r_type) |
5bd4f169 | 4704 | { |
727fc41e AM |
4705 | case R_PPC64_TLSGD: |
4706 | case R_PPC64_TLSLD: | |
4707 | /* These special tls relocs tie a call to __tls_get_addr with | |
4708 | its parameter symbol. */ | |
37da22e5 | 4709 | if (h != NULL) |
ed7007c1 | 4710 | ppc_elf_hash_entry (h)->tls_mask |= TLS_TLS | TLS_MARK; |
37da22e5 AM |
4711 | else |
4712 | if (!update_local_sym_info (abfd, symtab_hdr, r_symndx, | |
133a1f60 | 4713 | rel->r_addend, |
37da22e5 AM |
4714 | NON_GOT | TLS_TLS | TLS_MARK)) |
4715 | return FALSE; | |
4716 | sec->has_tls_reloc = 1; | |
727fc41e AM |
4717 | break; |
4718 | ||
411e1bfb AM |
4719 | case R_PPC64_GOT_TLSLD16: |
4720 | case R_PPC64_GOT_TLSLD16_LO: | |
4721 | case R_PPC64_GOT_TLSLD16_HI: | |
4722 | case R_PPC64_GOT_TLSLD16_HA: | |
87c69f97 | 4723 | case R_PPC64_GOT_TLSLD_PCREL34: |
951fd09b | 4724 | tls_type = TLS_TLS | TLS_LD; |
411e1bfb AM |
4725 | goto dogottls; |
4726 | ||
4727 | case R_PPC64_GOT_TLSGD16: | |
4728 | case R_PPC64_GOT_TLSGD16_LO: | |
4729 | case R_PPC64_GOT_TLSGD16_HI: | |
4730 | case R_PPC64_GOT_TLSGD16_HA: | |
87c69f97 | 4731 | case R_PPC64_GOT_TLSGD_PCREL34: |
951fd09b | 4732 | tls_type = TLS_TLS | TLS_GD; |
411e1bfb AM |
4733 | goto dogottls; |
4734 | ||
4735 | case R_PPC64_GOT_TPREL16_DS: | |
4736 | case R_PPC64_GOT_TPREL16_LO_DS: | |
4737 | case R_PPC64_GOT_TPREL16_HI: | |
4738 | case R_PPC64_GOT_TPREL16_HA: | |
87c69f97 | 4739 | case R_PPC64_GOT_TPREL_PCREL34: |
7c8bbca5 | 4740 | if (bfd_link_dll (info)) |
411e1bfb AM |
4741 | info->flags |= DF_STATIC_TLS; |
4742 | tls_type = TLS_TLS | TLS_TPREL; | |
4743 | goto dogottls; | |
4744 | ||
4745 | case R_PPC64_GOT_DTPREL16_DS: | |
4746 | case R_PPC64_GOT_DTPREL16_LO_DS: | |
4747 | case R_PPC64_GOT_DTPREL16_HI: | |
4748 | case R_PPC64_GOT_DTPREL16_HA: | |
87c69f97 | 4749 | case R_PPC64_GOT_DTPREL_PCREL34: |
411e1bfb AM |
4750 | tls_type = TLS_TLS | TLS_DTPREL; |
4751 | dogottls: | |
4752 | sec->has_tls_reloc = 1; | |
066f4018 | 4753 | goto dogot; |
411e1bfb | 4754 | |
903b777d AM |
4755 | case R_PPC64_GOT16: |
4756 | case R_PPC64_GOT16_LO: | |
4757 | case R_PPC64_GOT16_HI: | |
65f38f15 | 4758 | case R_PPC64_GOT16_HA: |
903b777d | 4759 | case R_PPC64_GOT16_DS: |
066f4018 | 4760 | case R_PPC64_GOT16_LO_DS: |
4a421c53 | 4761 | case R_PPC64_GOT_PCREL34: |
066f4018 | 4762 | dogot: |
65f38f15 | 4763 | /* This symbol requires a global offset table entry. */ |
4c52953f | 4764 | sec->has_toc_reloc = 1; |
33c0ec9d AM |
4765 | if (r_type == R_PPC64_GOT_TLSLD16 |
4766 | || r_type == R_PPC64_GOT_TLSGD16 | |
4767 | || r_type == R_PPC64_GOT_TPREL16_DS | |
4768 | || r_type == R_PPC64_GOT_DTPREL16_DS | |
4769 | || r_type == R_PPC64_GOT16 | |
4770 | || r_type == R_PPC64_GOT16_DS) | |
4771 | { | |
4772 | htab->do_multi_toc = 1; | |
d77c8a4b | 4773 | ppc64_elf_tdata (abfd)->has_small_toc_reloc = 1; |
33c0ec9d AM |
4774 | } |
4775 | ||
e717da7e AM |
4776 | if (ppc64_elf_tdata (abfd)->got == NULL |
4777 | && !create_got_section (abfd, info)) | |
b34976b6 | 4778 | return FALSE; |
5bd4f169 AM |
4779 | |
4780 | if (h != NULL) | |
4781 | { | |
411e1bfb AM |
4782 | struct ppc_link_hash_entry *eh; |
4783 | struct got_entry *ent; | |
65f38f15 | 4784 | |
ed7007c1 | 4785 | eh = ppc_elf_hash_entry (h); |
411e1bfb | 4786 | for (ent = eh->elf.got.glist; ent != NULL; ent = ent->next) |
133a1f60 | 4787 | if (ent->addend == rel->r_addend |
e717da7e | 4788 | && ent->owner == abfd |
411e1bfb AM |
4789 | && ent->tls_type == tls_type) |
4790 | break; | |
4791 | if (ent == NULL) | |
5bd4f169 | 4792 | { |
986f0783 | 4793 | size_t amt = sizeof (*ent); |
4ce794b7 | 4794 | ent = bfd_alloc (abfd, amt); |
411e1bfb | 4795 | if (ent == NULL) |
b34976b6 | 4796 | return FALSE; |
411e1bfb | 4797 | ent->next = eh->elf.got.glist; |
133a1f60 | 4798 | ent->addend = rel->r_addend; |
e717da7e | 4799 | ent->owner = abfd; |
411e1bfb | 4800 | ent->tls_type = tls_type; |
927be08e | 4801 | ent->is_indirect = FALSE; |
411e1bfb AM |
4802 | ent->got.refcount = 0; |
4803 | eh->elf.got.glist = ent; | |
5bd4f169 | 4804 | } |
411e1bfb | 4805 | ent->got.refcount += 1; |
e7b938ca | 4806 | eh->tls_mask |= tls_type; |
5bd4f169 | 4807 | } |
411e1bfb AM |
4808 | else |
4809 | /* This is a global offset table entry for a local symbol. */ | |
4810 | if (!update_local_sym_info (abfd, symtab_hdr, r_symndx, | |
133a1f60 | 4811 | rel->r_addend, tls_type)) |
411e1bfb | 4812 | return FALSE; |
5bd4f169 AM |
4813 | break; |
4814 | ||
5bd4f169 | 4815 | case R_PPC64_PLT16_HA: |
65f38f15 AM |
4816 | case R_PPC64_PLT16_HI: |
4817 | case R_PPC64_PLT16_LO: | |
08be3224 | 4818 | case R_PPC64_PLT16_LO_DS: |
5663e321 AM |
4819 | case R_PPC64_PLT_PCREL34: |
4820 | case R_PPC64_PLT_PCREL34_NOTOC: | |
65f38f15 AM |
4821 | case R_PPC64_PLT32: |
4822 | case R_PPC64_PLT64: | |
cbf95972 AM |
4823 | /* This symbol requires a procedure linkage table entry. */ |
4824 | plt_list = ifunc; | |
4825 | if (h != NULL) | |
e054468f | 4826 | { |
e054468f AM |
4827 | h->needs_plt = 1; |
4828 | if (h->root.root.string[0] == '.' | |
4829 | && h->root.root.string[1] != '\0') | |
ed7007c1 AM |
4830 | ppc_elf_hash_entry (h)->is_func = 1; |
4831 | ppc_elf_hash_entry (h)->tls_mask |= PLT_KEEP; | |
cbf95972 AM |
4832 | plt_list = &h->plt.plist; |
4833 | } | |
4834 | if (plt_list == NULL) | |
2d7ad24e | 4835 | plt_list = update_local_sym_info (abfd, symtab_hdr, r_symndx, |
133a1f60 | 4836 | rel->r_addend, |
2d7ad24e | 4837 | NON_GOT | PLT_KEEP); |
133a1f60 | 4838 | if (!update_plt_info (abfd, plt_list, rel->r_addend)) |
cbf95972 | 4839 | return FALSE; |
5bd4f169 AM |
4840 | break; |
4841 | ||
4842 | /* The following relocations don't need to propagate the | |
4843 | relocation if linking a shared object since they are | |
4844 | section relative. */ | |
4845 | case R_PPC64_SECTOFF: | |
4846 | case R_PPC64_SECTOFF_LO: | |
4847 | case R_PPC64_SECTOFF_HI: | |
4848 | case R_PPC64_SECTOFF_HA: | |
4849 | case R_PPC64_SECTOFF_DS: | |
4850 | case R_PPC64_SECTOFF_LO_DS: | |
411e1bfb AM |
4851 | case R_PPC64_DTPREL16: |
4852 | case R_PPC64_DTPREL16_LO: | |
4853 | case R_PPC64_DTPREL16_HI: | |
4854 | case R_PPC64_DTPREL16_HA: | |
4855 | case R_PPC64_DTPREL16_DS: | |
4856 | case R_PPC64_DTPREL16_LO_DS: | |
f9c6b907 AM |
4857 | case R_PPC64_DTPREL16_HIGH: |
4858 | case R_PPC64_DTPREL16_HIGHA: | |
411e1bfb AM |
4859 | case R_PPC64_DTPREL16_HIGHER: |
4860 | case R_PPC64_DTPREL16_HIGHERA: | |
4861 | case R_PPC64_DTPREL16_HIGHEST: | |
4862 | case R_PPC64_DTPREL16_HIGHESTA: | |
5bd4f169 AM |
4863 | break; |
4864 | ||
ad8e1ba5 | 4865 | /* Nor do these. */ |
25f23106 AM |
4866 | case R_PPC64_REL16: |
4867 | case R_PPC64_REL16_LO: | |
4868 | case R_PPC64_REL16_HI: | |
4869 | case R_PPC64_REL16_HA: | |
4a969973 AM |
4870 | case R_PPC64_REL16_HIGH: |
4871 | case R_PPC64_REL16_HIGHA: | |
4872 | case R_PPC64_REL16_HIGHER: | |
4873 | case R_PPC64_REL16_HIGHERA: | |
4874 | case R_PPC64_REL16_HIGHEST: | |
4875 | case R_PPC64_REL16_HIGHESTA: | |
5663e321 AM |
4876 | case R_PPC64_REL16_HIGHER34: |
4877 | case R_PPC64_REL16_HIGHERA34: | |
4878 | case R_PPC64_REL16_HIGHEST34: | |
4879 | case R_PPC64_REL16_HIGHESTA34: | |
a680de9a | 4880 | case R_PPC64_REL16DX_HA: |
25f23106 AM |
4881 | break; |
4882 | ||
45965137 AM |
4883 | /* Not supported as a dynamic relocation. */ |
4884 | case R_PPC64_ADDR64_LOCAL: | |
0e1862bb | 4885 | if (bfd_link_pic (info)) |
45965137 AM |
4886 | { |
4887 | if (!ppc64_elf_howto_table[R_PPC64_ADDR32]) | |
4888 | ppc_howto_init (); | |
695344c0 | 4889 | /* xgettext:c-format */ |
174d0a74 | 4890 | info->callbacks->einfo (_("%H: %s reloc unsupported " |
cf97bcb0 | 4891 | "in shared libraries and PIEs\n"), |
45965137 AM |
4892 | abfd, sec, rel->r_offset, |
4893 | ppc64_elf_howto_table[r_type]->name); | |
4894 | bfd_set_error (bfd_error_bad_value); | |
4895 | return FALSE; | |
4896 | } | |
4897 | break; | |
4898 | ||
ad8e1ba5 | 4899 | case R_PPC64_TOC16: |
33c0ec9d AM |
4900 | case R_PPC64_TOC16_DS: |
4901 | htab->do_multi_toc = 1; | |
d77c8a4b | 4902 | ppc64_elf_tdata (abfd)->has_small_toc_reloc = 1; |
1a0670f3 | 4903 | /* Fall through. */ |
ad8e1ba5 AM |
4904 | case R_PPC64_TOC16_LO: |
4905 | case R_PPC64_TOC16_HI: | |
4906 | case R_PPC64_TOC16_HA: | |
ad8e1ba5 | 4907 | case R_PPC64_TOC16_LO_DS: |
4c52953f | 4908 | sec->has_toc_reloc = 1; |
ec73ddcd | 4909 | if (h != NULL && bfd_link_executable (info)) |
1bdd8fac AM |
4910 | { |
4911 | /* We may need a copy reloc. */ | |
4912 | h->non_got_ref = 1; | |
4913 | /* Strongly prefer a copy reloc over a dynamic reloc. | |
4914 | glibc ld.so as of 2019-08 will error out if one of | |
4915 | these relocations is emitted. */ | |
4916 | h->needs_copy = 1; | |
4917 | goto dodyn; | |
4918 | } | |
ad8e1ba5 AM |
4919 | break; |
4920 | ||
006589cf AM |
4921 | /* Marker reloc. */ |
4922 | case R_PPC64_ENTRY: | |
4923 | break; | |
4924 | ||
5bd4f169 AM |
4925 | /* This relocation describes the C++ object vtable hierarchy. |
4926 | Reconstruct it for later use during GC. */ | |
4927 | case R_PPC64_GNU_VTINHERIT: | |
c152c796 | 4928 | if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset)) |
b34976b6 | 4929 | return FALSE; |
5bd4f169 AM |
4930 | break; |
4931 | ||
4932 | /* This relocation describes which C++ vtable entries are actually | |
4933 | used. Record for later use during GC. */ | |
4934 | case R_PPC64_GNU_VTENTRY: | |
a0ea3a14 | 4935 | if (!bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend)) |
b34976b6 | 4936 | return FALSE; |
5bd4f169 AM |
4937 | break; |
4938 | ||
721956f4 AM |
4939 | case R_PPC64_REL14: |
4940 | case R_PPC64_REL14_BRTAKEN: | |
4941 | case R_PPC64_REL14_BRNTAKEN: | |
220c76dd AM |
4942 | { |
4943 | asection *dest = NULL; | |
4944 | ||
4945 | /* Heuristic: If jumping outside our section, chances are | |
4946 | we are going to need a stub. */ | |
4947 | if (h != NULL) | |
4948 | { | |
4949 | /* If the sym is weak it may be overridden later, so | |
4950 | don't assume we know where a weak sym lives. */ | |
4951 | if (h->root.type == bfd_link_hash_defined) | |
4952 | dest = h->root.u.def.section; | |
4953 | } | |
4954 | else | |
87d72d41 AM |
4955 | { |
4956 | Elf_Internal_Sym *isym; | |
4957 | ||
4958 | isym = bfd_sym_from_r_symndx (&htab->sym_cache, | |
4959 | abfd, r_symndx); | |
4960 | if (isym == NULL) | |
4961 | return FALSE; | |
4962 | ||
4963 | dest = bfd_section_from_elf_index (abfd, isym->st_shndx); | |
4964 | } | |
4965 | ||
220c76dd | 4966 | if (dest != sec) |
7c8fe5c4 | 4967 | ppc64_elf_section_data (sec)->has_14bit_branch = 1; |
220c76dd | 4968 | } |
3e04d765 AM |
4969 | goto rel24; |
4970 | ||
4971 | case R_PPC64_PLTCALL: | |
5663e321 | 4972 | case R_PPC64_PLTCALL_NOTOC: |
3e04d765 | 4973 | ppc64_elf_section_data (sec)->has_pltcall = 1; |
721956f4 AM |
4974 | /* Fall through. */ |
4975 | ||
5d1634d7 | 4976 | case R_PPC64_REL24: |
05d0e962 | 4977 | case R_PPC64_REL24_NOTOC: |
3e04d765 | 4978 | rel24: |
cbf95972 AM |
4979 | plt_list = ifunc; |
4980 | if (h != NULL) | |
5d1634d7 | 4981 | { |
e054468f AM |
4982 | h->needs_plt = 1; |
4983 | if (h->root.root.string[0] == '.' | |
4984 | && h->root.root.string[1] != '\0') | |
ed7007c1 | 4985 | ppc_elf_hash_entry (h)->is_func = 1; |
cbf95972 | 4986 | |
3a71aa26 | 4987 | if (h == tga || h == dottga) |
cbf95972 AM |
4988 | { |
4989 | sec->has_tls_reloc = 1; | |
4990 | if (rel != relocs | |
4991 | && (ELF64_R_TYPE (rel[-1].r_info) == R_PPC64_TLSGD | |
4992 | || ELF64_R_TYPE (rel[-1].r_info) == R_PPC64_TLSLD)) | |
4993 | /* We have a new-style __tls_get_addr call with | |
4994 | a marker reloc. */ | |
4995 | ; | |
4996 | else | |
4997 | /* Mark this section as having an old-style call. */ | |
9737e8af | 4998 | sec->nomark_tls_get_addr = 1; |
cbf95972 AM |
4999 | } |
5000 | plt_list = &h->plt.plist; | |
411e1bfb | 5001 | } |
cbf95972 AM |
5002 | |
5003 | /* We may need a .plt entry if the function this reloc | |
5004 | refers to is in a shared lib. */ | |
5005 | if (plt_list | |
133a1f60 | 5006 | && !update_plt_info (abfd, plt_list, rel->r_addend)) |
cbf95972 | 5007 | return FALSE; |
411e1bfb AM |
5008 | break; |
5009 | ||
cbf95972 AM |
5010 | case R_PPC64_ADDR14: |
5011 | case R_PPC64_ADDR14_BRNTAKEN: | |
5012 | case R_PPC64_ADDR14_BRTAKEN: | |
5013 | case R_PPC64_ADDR24: | |
5014 | goto dodyn; | |
5015 | ||
411e1bfb AM |
5016 | case R_PPC64_TPREL64: |
5017 | tls_type = TLS_EXPLICIT | TLS_TLS | TLS_TPREL; | |
7c8bbca5 | 5018 | if (bfd_link_dll (info)) |
411e1bfb AM |
5019 | info->flags |= DF_STATIC_TLS; |
5020 | goto dotlstoc; | |
5021 | ||
5022 | case R_PPC64_DTPMOD64: | |
5023 | if (rel + 1 < rel_end | |
5024 | && rel[1].r_info == ELF64_R_INFO (r_symndx, R_PPC64_DTPREL64) | |
5025 | && rel[1].r_offset == rel->r_offset + 8) | |
951fd09b | 5026 | tls_type = TLS_EXPLICIT | TLS_TLS | TLS_GD; |
411e1bfb | 5027 | else |
951fd09b | 5028 | tls_type = TLS_EXPLICIT | TLS_TLS | TLS_LD; |
411e1bfb AM |
5029 | goto dotlstoc; |
5030 | ||
5031 | case R_PPC64_DTPREL64: | |
5032 | tls_type = TLS_EXPLICIT | TLS_TLS | TLS_DTPREL; | |
5033 | if (rel != relocs | |
5034 | && rel[-1].r_info == ELF64_R_INFO (r_symndx, R_PPC64_DTPMOD64) | |
5035 | && rel[-1].r_offset == rel->r_offset - 8) | |
5036 | /* This is the second reloc of a dtpmod, dtprel pair. | |
5037 | Don't mark with TLS_DTPREL. */ | |
5038 | goto dodyn; | |
5039 | ||
5040 | dotlstoc: | |
5041 | sec->has_tls_reloc = 1; | |
5042 | if (h != NULL) | |
ed7007c1 | 5043 | ppc_elf_hash_entry (h)->tls_mask |= tls_type & 0xff; |
411e1bfb AM |
5044 | else |
5045 | if (!update_local_sym_info (abfd, symtab_hdr, r_symndx, | |
133a1f60 | 5046 | rel->r_addend, tls_type)) |
411e1bfb AM |
5047 | return FALSE; |
5048 | ||
7c8fe5c4 AM |
5049 | ppc64_sec = ppc64_elf_section_data (sec); |
5050 | if (ppc64_sec->sec_type != sec_toc) | |
411e1bfb | 5051 | { |
3a71aa26 AM |
5052 | bfd_size_type amt; |
5053 | ||
e7b938ca | 5054 | /* One extra to simplify get_tls_mask. */ |
3a71aa26 AM |
5055 | amt = sec->size * sizeof (unsigned) / 8 + sizeof (unsigned); |
5056 | ppc64_sec->u.toc.symndx = bfd_zalloc (abfd, amt); | |
5057 | if (ppc64_sec->u.toc.symndx == NULL) | |
5058 | return FALSE; | |
5059 | amt = sec->size * sizeof (bfd_vma) / 8; | |
5060 | ppc64_sec->u.toc.add = bfd_zalloc (abfd, amt); | |
5061 | if (ppc64_sec->u.toc.add == NULL) | |
411e1bfb | 5062 | return FALSE; |
7c8fe5c4 AM |
5063 | BFD_ASSERT (ppc64_sec->sec_type == sec_normal); |
5064 | ppc64_sec->sec_type = sec_toc; | |
411e1bfb AM |
5065 | } |
5066 | BFD_ASSERT (rel->r_offset % 8 == 0); | |
3a71aa26 | 5067 | ppc64_sec->u.toc.symndx[rel->r_offset / 8] = r_symndx; |
133a1f60 | 5068 | ppc64_sec->u.toc.add[rel->r_offset / 8] = rel->r_addend; |
951fd09b AM |
5069 | |
5070 | /* Mark the second slot of a GD or LD entry. | |
5071 | -1 to indicate GD and -2 to indicate LD. */ | |
5072 | if (tls_type == (TLS_EXPLICIT | TLS_TLS | TLS_GD)) | |
3a71aa26 | 5073 | ppc64_sec->u.toc.symndx[rel->r_offset / 8 + 1] = -1; |
951fd09b | 5074 | else if (tls_type == (TLS_EXPLICIT | TLS_TLS | TLS_LD)) |
3a71aa26 | 5075 | ppc64_sec->u.toc.symndx[rel->r_offset / 8 + 1] = -2; |
411e1bfb AM |
5076 | goto dodyn; |
5077 | ||
5078 | case R_PPC64_TPREL16: | |
5079 | case R_PPC64_TPREL16_LO: | |
5080 | case R_PPC64_TPREL16_HI: | |
5081 | case R_PPC64_TPREL16_HA: | |
5082 | case R_PPC64_TPREL16_DS: | |
5083 | case R_PPC64_TPREL16_LO_DS: | |
f9c6b907 AM |
5084 | case R_PPC64_TPREL16_HIGH: |
5085 | case R_PPC64_TPREL16_HIGHA: | |
411e1bfb AM |
5086 | case R_PPC64_TPREL16_HIGHER: |
5087 | case R_PPC64_TPREL16_HIGHERA: | |
5088 | case R_PPC64_TPREL16_HIGHEST: | |
5089 | case R_PPC64_TPREL16_HIGHESTA: | |
c213164a | 5090 | case R_PPC64_TPREL34: |
7c8bbca5 AM |
5091 | if (bfd_link_dll (info)) |
5092 | info->flags |= DF_STATIC_TLS; | |
5093 | goto dodyn; | |
5d1634d7 | 5094 | |
e86ce104 | 5095 | case R_PPC64_ADDR64: |
b9399fcf | 5096 | if (is_opd |
1e2f5b6e | 5097 | && rel + 1 < rel_end |
4ce794b7 | 5098 | && ELF64_R_TYPE ((rel + 1)->r_info) == R_PPC64_TOC) |
1e2f5b6e | 5099 | { |
8387904d | 5100 | if (h != NULL) |
ed7007c1 | 5101 | ppc_elf_hash_entry (h)->is_func = 1; |
1e2f5b6e | 5102 | } |
e86ce104 AM |
5103 | /* Fall through. */ |
5104 | ||
65f38f15 AM |
5105 | case R_PPC64_ADDR16: |
5106 | case R_PPC64_ADDR16_DS: | |
5107 | case R_PPC64_ADDR16_HA: | |
5108 | case R_PPC64_ADDR16_HI: | |
f9c6b907 AM |
5109 | case R_PPC64_ADDR16_HIGH: |
5110 | case R_PPC64_ADDR16_HIGHA: | |
65f38f15 AM |
5111 | case R_PPC64_ADDR16_HIGHER: |
5112 | case R_PPC64_ADDR16_HIGHERA: | |
5113 | case R_PPC64_ADDR16_HIGHEST: | |
5114 | case R_PPC64_ADDR16_HIGHESTA: | |
5115 | case R_PPC64_ADDR16_LO: | |
5116 | case R_PPC64_ADDR16_LO_DS: | |
5663e321 AM |
5117 | case R_PPC64_D34: |
5118 | case R_PPC64_D34_LO: | |
5119 | case R_PPC64_D34_HI30: | |
5120 | case R_PPC64_D34_HA30: | |
5121 | case R_PPC64_ADDR16_HIGHER34: | |
5122 | case R_PPC64_ADDR16_HIGHERA34: | |
5123 | case R_PPC64_ADDR16_HIGHEST34: | |
5124 | case R_PPC64_ADDR16_HIGHESTA34: | |
5125 | case R_PPC64_D28: | |
0e1862bb | 5126 | if (h != NULL && !bfd_link_pic (info) && abiversion (abfd) != 1 |
a345bc8d AM |
5127 | && rel->r_addend == 0) |
5128 | { | |
5129 | /* We may need a .plt entry if this reloc refers to a | |
5130 | function in a shared lib. */ | |
5663e321 | 5131 | if (!update_plt_info (abfd, &h->plt.plist, 0)) |
a345bc8d AM |
5132 | return FALSE; |
5133 | h->pointer_equality_needed = 1; | |
5134 | } | |
5135 | /* Fall through. */ | |
5136 | ||
5137 | case R_PPC64_REL30: | |
5138 | case R_PPC64_REL32: | |
5139 | case R_PPC64_REL64: | |
65f38f15 | 5140 | case R_PPC64_ADDR32: |
65f38f15 AM |
5141 | case R_PPC64_UADDR16: |
5142 | case R_PPC64_UADDR32: | |
5143 | case R_PPC64_UADDR64: | |
5bd4f169 | 5144 | case R_PPC64_TOC: |
ec73ddcd | 5145 | if (h != NULL && bfd_link_executable (info)) |
81848ca0 | 5146 | /* We may need a copy reloc. */ |
f5385ebf | 5147 | h->non_got_ref = 1; |
81848ca0 | 5148 | |
41bd81ab | 5149 | /* Don't propagate .opd relocs. */ |
b9399fcf | 5150 | if (NO_OPD_RELOCS && is_opd) |
e86ce104 | 5151 | break; |
e86ce104 | 5152 | |
65f38f15 AM |
5153 | /* If we are creating a shared library, and this is a reloc |
5154 | against a global symbol, or a non PC relative reloc | |
5155 | against a local symbol, then we need to copy the reloc | |
5156 | into the shared library. However, if we are linking with | |
5157 | -Bsymbolic, we do not need to copy a reloc against a | |
5158 | global symbol which is defined in an object we are | |
5159 | including in the link (i.e., DEF_REGULAR is set). At | |
5160 | this point we have not seen all the input files, so it is | |
5161 | possible that DEF_REGULAR is not set now but will be set | |
5162 | later (it is never cleared). In case of a weak definition, | |
5163 | DEF_REGULAR may be cleared later by a strong definition in | |
5164 | a shared library. We account for that possibility below by | |
f4656909 | 5165 | storing information in the dyn_relocs field of the hash |
65f38f15 AM |
5166 | table entry. A similar situation occurs when creating |
5167 | shared libraries and symbol visibility changes render the | |
5168 | symbol local. | |
5169 | ||
5170 | If on the other hand, we are creating an executable, we | |
5171 | may need to keep relocations for symbols satisfied by a | |
5172 | dynamic library if we manage to avoid copy relocs for the | |
5173 | symbol. */ | |
411e1bfb | 5174 | dodyn: |
ec73ddcd AM |
5175 | if ((h != NULL |
5176 | && (h->root.type == bfd_link_hash_defweak | |
5177 | || !h->def_regular)) | |
5178 | || (h != NULL | |
5179 | && !bfd_link_executable (info) | |
5180 | && !SYMBOLIC_BIND (info, h)) | |
5181 | || (bfd_link_pic (info) | |
5182 | && must_be_dyn_reloc (info, r_type)) | |
0e1862bb | 5183 | || (!bfd_link_pic (info) |
25f23106 | 5184 | && ifunc != NULL)) |
5bd4f169 | 5185 | { |
65f38f15 AM |
5186 | /* We must copy these reloc types into the output file. |
5187 | Create a reloc section in dynobj and make room for | |
5188 | this reloc. */ | |
5bd4f169 AM |
5189 | if (sreloc == NULL) |
5190 | { | |
83bac4b0 NC |
5191 | sreloc = _bfd_elf_make_dynamic_reloc_section |
5192 | (sec, htab->elf.dynobj, 3, abfd, /*rela?*/ TRUE); | |
65f38f15 | 5193 | |
5bd4f169 | 5194 | if (sreloc == NULL) |
83bac4b0 | 5195 | return FALSE; |
5bd4f169 AM |
5196 | } |
5197 | ||
65f38f15 AM |
5198 | /* If this is a global symbol, we count the number of |
5199 | relocations we need for this symbol. */ | |
5200 | if (h != NULL) | |
5201 | { | |
19e08130 AM |
5202 | struct elf_dyn_relocs *p; |
5203 | struct elf_dyn_relocs **head; | |
5204 | ||
190eb1dd | 5205 | head = &h->dyn_relocs; |
19e08130 AM |
5206 | p = *head; |
5207 | if (p == NULL || p->sec != sec) | |
5208 | { | |
5209 | p = bfd_alloc (htab->elf.dynobj, sizeof *p); | |
5210 | if (p == NULL) | |
5211 | return FALSE; | |
5212 | p->next = *head; | |
5213 | *head = p; | |
5214 | p->sec = sec; | |
5215 | p->count = 0; | |
5216 | p->pc_count = 0; | |
5217 | } | |
5218 | p->count += 1; | |
5219 | if (!must_be_dyn_reloc (info, r_type)) | |
5220 | p->pc_count += 1; | |
65f38f15 AM |
5221 | } |
5222 | else | |
5223 | { | |
ec338859 AM |
5224 | /* Track dynamic relocs needed for local syms too. |
5225 | We really need local syms available to do this | |
5226 | easily. Oh well. */ | |
19e08130 AM |
5227 | struct ppc_dyn_relocs *p; |
5228 | struct ppc_dyn_relocs **head; | |
5229 | bfd_boolean is_ifunc; | |
ec338859 | 5230 | asection *s; |
6edfbbad | 5231 | void *vpp; |
87d72d41 | 5232 | Elf_Internal_Sym *isym; |
6edfbbad | 5233 | |
87d72d41 AM |
5234 | isym = bfd_sym_from_r_symndx (&htab->sym_cache, |
5235 | abfd, r_symndx); | |
5236 | if (isym == NULL) | |
b34976b6 | 5237 | return FALSE; |
ec338859 | 5238 | |
87d72d41 AM |
5239 | s = bfd_section_from_elf_index (abfd, isym->st_shndx); |
5240 | if (s == NULL) | |
5241 | s = sec; | |
5242 | ||
6edfbbad | 5243 | vpp = &elf_section_data (s)->local_dynrel; |
19e08130 AM |
5244 | head = (struct ppc_dyn_relocs **) vpp; |
5245 | is_ifunc = ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC; | |
5246 | p = *head; | |
5247 | if (p != NULL && p->sec == sec && p->ifunc != is_ifunc) | |
5248 | p = p->next; | |
5249 | if (p == NULL || p->sec != sec || p->ifunc != is_ifunc) | |
5250 | { | |
5251 | p = bfd_alloc (htab->elf.dynobj, sizeof *p); | |
5252 | if (p == NULL) | |
5253 | return FALSE; | |
5254 | p->next = *head; | |
5255 | *head = p; | |
5256 | p->sec = sec; | |
5257 | p->ifunc = is_ifunc; | |
5258 | p->count = 0; | |
5259 | } | |
5260 | p->count += 1; | |
ec338859 | 5261 | } |
65f38f15 | 5262 | } |
5bd4f169 | 5263 | break; |
65f38f15 AM |
5264 | |
5265 | default: | |
96e0dda4 | 5266 | break; |
5bd4f169 AM |
5267 | } |
5268 | } | |
5269 | ||
b34976b6 | 5270 | return TRUE; |
5bd4f169 AM |
5271 | } |
5272 | ||
ee67d69a AM |
5273 | /* Merge backend specific data from an object file to the output |
5274 | object file when linking. */ | |
5275 | ||
5276 | static bfd_boolean | |
50e03d47 | 5277 | ppc64_elf_merge_private_bfd_data (bfd *ibfd, struct bfd_link_info *info) |
ee67d69a | 5278 | { |
50e03d47 | 5279 | bfd *obfd = info->output_bfd; |
ee67d69a AM |
5280 | unsigned long iflags, oflags; |
5281 | ||
5282 | if ((ibfd->flags & BFD_LINKER_CREATED) != 0) | |
5283 | return TRUE; | |
5284 | ||
5285 | if (!is_ppc64_elf (ibfd) || !is_ppc64_elf (obfd)) | |
5286 | return TRUE; | |
5287 | ||
50e03d47 | 5288 | if (!_bfd_generic_verify_endian_match (ibfd, info)) |
ee67d69a AM |
5289 | return FALSE; |
5290 | ||
5291 | iflags = elf_elfheader (ibfd)->e_flags; | |
5292 | oflags = elf_elfheader (obfd)->e_flags; | |
5293 | ||
f6c7c3e8 | 5294 | if (iflags & ~EF_PPC64_ABI) |
ee67d69a | 5295 | { |
4eca0228 | 5296 | _bfd_error_handler |
695344c0 | 5297 | /* xgettext:c-format */ |
871b3ab2 | 5298 | (_("%pB uses unknown e_flags 0x%lx"), ibfd, iflags); |
ee67d69a AM |
5299 | bfd_set_error (bfd_error_bad_value); |
5300 | return FALSE; | |
5301 | } | |
f6c7c3e8 | 5302 | else if (iflags != oflags && iflags != 0) |
ee67d69a | 5303 | { |
4eca0228 | 5304 | _bfd_error_handler |
695344c0 | 5305 | /* xgettext:c-format */ |
871b3ab2 | 5306 | (_("%pB: ABI version %ld is not compatible with ABI version %ld output"), |
ee67d69a AM |
5307 | ibfd, iflags, oflags); |
5308 | bfd_set_error (bfd_error_bad_value); | |
5309 | return FALSE; | |
5310 | } | |
5311 | ||
4a91d0ba AM |
5312 | if (!_bfd_elf_ppc_merge_fp_attributes (ibfd, info)) |
5313 | return FALSE; | |
005d79fd | 5314 | |
ee67d69a | 5315 | /* Merge Tag_compatibility attributes and any common GNU ones. */ |
8d2c8c3d | 5316 | return _bfd_elf_merge_object_attributes (ibfd, info); |
ee67d69a AM |
5317 | } |
5318 | ||
5319 | static bfd_boolean | |
5320 | ppc64_elf_print_private_bfd_data (bfd *abfd, void *ptr) | |
5321 | { | |
5322 | /* Print normal ELF private data. */ | |
5323 | _bfd_elf_print_private_bfd_data (abfd, ptr); | |
5324 | ||
5325 | if (elf_elfheader (abfd)->e_flags != 0) | |
5326 | { | |
5327 | FILE *file = ptr; | |
5328 | ||
ee67d69a AM |
5329 | fprintf (file, _("private flags = 0x%lx:"), |
5330 | elf_elfheader (abfd)->e_flags); | |
5331 | ||
5332 | if ((elf_elfheader (abfd)->e_flags & EF_PPC64_ABI) != 0) | |
5333 | fprintf (file, _(" [abiv%ld]"), | |
5334 | elf_elfheader (abfd)->e_flags & EF_PPC64_ABI); | |
5335 | fputc ('\n', file); | |
5336 | } | |
5337 | ||
5338 | return TRUE; | |
5339 | } | |
5340 | ||
8387904d | 5341 | /* OFFSET in OPD_SEC specifies a function descriptor. Return the address |
b53dfeb2 AM |
5342 | of the code entry point, and its section, which must be in the same |
5343 | object as OPD_SEC. Returns (bfd_vma) -1 on error. */ | |
8387904d AM |
5344 | |
5345 | static bfd_vma | |
5346 | opd_entry_value (asection *opd_sec, | |
5347 | bfd_vma offset, | |
5348 | asection **code_sec, | |
aef36ac1 AM |
5349 | bfd_vma *code_off, |
5350 | bfd_boolean in_code_sec) | |
8387904d AM |
5351 | { |
5352 | bfd *opd_bfd = opd_sec->owner; | |
8860955f | 5353 | Elf_Internal_Rela *relocs; |
8387904d | 5354 | Elf_Internal_Rela *lo, *hi, *look; |
645ea6a9 | 5355 | bfd_vma val; |
8387904d | 5356 | |
9f296da3 AM |
5357 | /* No relocs implies we are linking a --just-symbols object, or looking |
5358 | at a final linked executable with addr2line or somesuch. */ | |
4b85d634 AM |
5359 | if (opd_sec->reloc_count == 0) |
5360 | { | |
729eabd5 | 5361 | bfd_byte *contents = ppc64_elf_tdata (opd_bfd)->opd.contents; |
3b36f7e6 | 5362 | |
729eabd5 AM |
5363 | if (contents == NULL) |
5364 | { | |
5365 | if (!bfd_malloc_and_get_section (opd_bfd, opd_sec, &contents)) | |
5366 | return (bfd_vma) -1; | |
5367 | ppc64_elf_tdata (opd_bfd)->opd.contents = contents; | |
5368 | } | |
ee1e4ede | 5369 | |
dbb3fbbb | 5370 | /* PR 17512: file: 64b9dfbb. */ |
451dfd38 | 5371 | if (offset + 7 >= opd_sec->size || offset + 7 < offset) |
dbb3fbbb NC |
5372 | return (bfd_vma) -1; |
5373 | ||
729eabd5 | 5374 | val = bfd_get_64 (opd_bfd, contents + offset); |
aef36ac1 AM |
5375 | if (code_sec != NULL) |
5376 | { | |
5377 | asection *sec, *likely = NULL; | |
ee1e4ede | 5378 | |
aef36ac1 | 5379 | if (in_code_sec) |
4b85d634 | 5380 | { |
aef36ac1 AM |
5381 | sec = *code_sec; |
5382 | if (sec->vma <= val | |
5383 | && val < sec->vma + sec->size) | |
5384 | likely = sec; | |
5385 | else | |
5386 | val = -1; | |
5387 | } | |
5388 | else | |
5389 | for (sec = opd_bfd->sections; sec != NULL; sec = sec->next) | |
5390 | if (sec->vma <= val | |
5391 | && (sec->flags & SEC_LOAD) != 0 | |
5392 | && (sec->flags & SEC_ALLOC) != 0) | |
5393 | likely = sec; | |
5394 | if (likely != NULL) | |
5395 | { | |
5396 | *code_sec = likely; | |
5397 | if (code_off != NULL) | |
5398 | *code_off = val - likely->vma; | |
4b85d634 AM |
5399 | } |
5400 | } | |
aef36ac1 | 5401 | return val; |
4b85d634 AM |
5402 | } |
5403 | ||
0c8d6e5c | 5404 | BFD_ASSERT (is_ppc64_elf (opd_bfd)); |
0ffa91dd | 5405 | |
729eabd5 | 5406 | relocs = ppc64_elf_tdata (opd_bfd)->opd.relocs; |
8860955f AM |
5407 | if (relocs == NULL) |
5408 | relocs = _bfd_elf_link_read_relocs (opd_bfd, opd_sec, NULL, NULL, TRUE); | |
877a8638 NC |
5409 | /* PR 17512: file: df8e1fd6. */ |
5410 | if (relocs == NULL) | |
5411 | return (bfd_vma) -1; | |
645ea6a9 | 5412 | |
8387904d | 5413 | /* Go find the opd reloc at the sym address. */ |
8860955f | 5414 | lo = relocs; |
8387904d | 5415 | hi = lo + opd_sec->reloc_count - 1; /* ignore last reloc */ |
645ea6a9 | 5416 | val = (bfd_vma) -1; |
8387904d AM |
5417 | while (lo < hi) |
5418 | { | |
5419 | look = lo + (hi - lo) / 2; | |
5420 | if (look->r_offset < offset) | |
5421 | lo = look + 1; | |
5422 | else if (look->r_offset > offset) | |
5423 | hi = look; | |
5424 | else | |
5425 | { | |
0ffa91dd NC |
5426 | Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (opd_bfd); |
5427 | ||
8387904d AM |
5428 | if (ELF64_R_TYPE (look->r_info) == R_PPC64_ADDR64 |
5429 | && ELF64_R_TYPE ((look + 1)->r_info) == R_PPC64_TOC) | |
5430 | { | |
5431 | unsigned long symndx = ELF64_R_SYM (look->r_info); | |
b53dfeb2 | 5432 | asection *sec = NULL; |
8387904d | 5433 | |
b53dfeb2 AM |
5434 | if (symndx >= symtab_hdr->sh_info |
5435 | && elf_sym_hashes (opd_bfd) != NULL) | |
8387904d AM |
5436 | { |
5437 | struct elf_link_hash_entry **sym_hashes; | |
5438 | struct elf_link_hash_entry *rh; | |
5439 | ||
5440 | sym_hashes = elf_sym_hashes (opd_bfd); | |
5441 | rh = sym_hashes[symndx - symtab_hdr->sh_info]; | |
128205bb AM |
5442 | if (rh != NULL) |
5443 | { | |
5444 | rh = elf_follow_link (rh); | |
bb854a36 AM |
5445 | if (rh->root.type != bfd_link_hash_defined |
5446 | && rh->root.type != bfd_link_hash_defweak) | |
5447 | break; | |
5448 | if (rh->root.u.def.section->owner == opd_bfd) | |
b53dfeb2 | 5449 | { |
bb854a36 AM |
5450 | val = rh->root.u.def.value; |
5451 | sec = rh->root.u.def.section; | |
b53dfeb2 AM |
5452 | } |
5453 | } | |
5454 | } | |
5455 | ||
5456 | if (sec == NULL) | |
5457 | { | |
5458 | Elf_Internal_Sym *sym; | |
5459 | ||
5460 | if (symndx < symtab_hdr->sh_info) | |
5461 | { | |
5462 | sym = (Elf_Internal_Sym *) symtab_hdr->contents; | |
5463 | if (sym == NULL) | |
5464 | { | |
5465 | size_t symcnt = symtab_hdr->sh_info; | |
5466 | sym = bfd_elf_get_elf_syms (opd_bfd, symtab_hdr, | |
5467 | symcnt, 0, | |
5468 | NULL, NULL, NULL); | |
5469 | if (sym == NULL) | |
5470 | break; | |
5471 | symtab_hdr->contents = (bfd_byte *) sym; | |
5472 | } | |
5473 | sym += symndx; | |
128205bb AM |
5474 | } |
5475 | else | |
5476 | { | |
b53dfeb2 AM |
5477 | sym = bfd_elf_get_elf_syms (opd_bfd, symtab_hdr, |
5478 | 1, symndx, | |
5479 | NULL, NULL, NULL); | |
128205bb AM |
5480 | if (sym == NULL) |
5481 | break; | |
128205bb | 5482 | } |
b53dfeb2 AM |
5483 | sec = bfd_section_from_elf_index (opd_bfd, sym->st_shndx); |
5484 | if (sec == NULL) | |
5485 | break; | |
5486 | BFD_ASSERT ((sec->flags & SEC_MERGE) == 0); | |
5487 | val = sym->st_value; | |
8387904d | 5488 | } |
b53dfeb2 | 5489 | |
8387904d AM |
5490 | val += look->r_addend; |
5491 | if (code_off != NULL) | |
5492 | *code_off = val; | |
5493 | if (code_sec != NULL) | |
aef36ac1 AM |
5494 | { |
5495 | if (in_code_sec && *code_sec != sec) | |
5496 | return -1; | |
5497 | else | |
5498 | *code_sec = sec; | |
5499 | } | |
b53dfeb2 | 5500 | if (sec->output_section != NULL) |
8387904d | 5501 | val += sec->output_section->vma + sec->output_offset; |
8387904d AM |
5502 | } |
5503 | break; | |
5504 | } | |
5505 | } | |
645ea6a9 | 5506 | |
645ea6a9 | 5507 | return val; |
8387904d AM |
5508 | } |
5509 | ||
aef36ac1 AM |
5510 | /* If the ELF symbol SYM might be a function in SEC, return the |
5511 | function size and set *CODE_OFF to the function's entry point, | |
5512 | otherwise return zero. */ | |
9f296da3 | 5513 | |
aef36ac1 AM |
5514 | static bfd_size_type |
5515 | ppc64_elf_maybe_function_sym (const asymbol *sym, asection *sec, | |
5516 | bfd_vma *code_off) | |
9f296da3 | 5517 | { |
aef36ac1 AM |
5518 | bfd_size_type size; |
5519 | ||
5520 | if ((sym->flags & (BSF_SECTION_SYM | BSF_FILE | BSF_OBJECT | |
5521 | | BSF_THREAD_LOCAL | BSF_RELC | BSF_SRELC)) != 0) | |
5522 | return 0; | |
5523 | ||
5524 | size = 0; | |
5525 | if (!(sym->flags & BSF_SYNTHETIC)) | |
5526 | size = ((elf_symbol_type *) sym)->internal_elf_sym.st_size; | |
5527 | ||
5528 | if (strcmp (sym->section->name, ".opd") == 0) | |
9f296da3 | 5529 | { |
b07bca4e AM |
5530 | struct _opd_sec_data *opd = get_opd_info (sym->section); |
5531 | bfd_vma symval = sym->value; | |
5532 | ||
5533 | if (opd != NULL | |
5534 | && opd->adjust != NULL | |
5535 | && elf_section_data (sym->section)->relocs != NULL) | |
5536 | { | |
5537 | /* opd_entry_value will use cached relocs that have been | |
5538 | adjusted, but with raw symbols. That means both local | |
5539 | and global symbols need adjusting. */ | |
5540 | long adjust = opd->adjust[OPD_NDX (symval)]; | |
5541 | if (adjust == -1) | |
5542 | return 0; | |
5543 | symval += adjust; | |
5544 | } | |
5545 | ||
5546 | if (opd_entry_value (sym->section, symval, | |
aef36ac1 AM |
5547 | &sec, code_off, TRUE) == (bfd_vma) -1) |
5548 | return 0; | |
5549 | /* An old ABI binary with dot-syms has a size of 24 on the .opd | |
5550 | symbol. This size has nothing to do with the code size of the | |
5551 | function, which is what we're supposed to return, but the | |
5552 | code size isn't available without looking up the dot-sym. | |
5553 | However, doing that would be a waste of time particularly | |
5554 | since elf_find_function will look at the dot-sym anyway. | |
5555 | Now, elf_find_function will keep the largest size of any | |
5556 | function sym found at the code address of interest, so return | |
5557 | 1 here to avoid it incorrectly caching a larger function size | |
5558 | for a small function. This does mean we return the wrong | |
5559 | size for a new-ABI function of size 24, but all that does is | |
5560 | disable caching for such functions. */ | |
5561 | if (size == 24) | |
5562 | size = 1; | |
9f296da3 | 5563 | } |
aef36ac1 AM |
5564 | else |
5565 | { | |
5566 | if (sym->section != sec) | |
5567 | return 0; | |
5568 | *code_off = sym->value; | |
5569 | } | |
5570 | if (size == 0) | |
5571 | size = 1; | |
5572 | return size; | |
9f296da3 AM |
5573 | } |
5574 | ||
f378ab09 AM |
5575 | /* Return true if symbol is a strong function defined in an ELFv2 |
5576 | object with st_other localentry bits of zero, ie. its local entry | |
5577 | point coincides with its global entry point. */ | |
5578 | ||
5579 | static bfd_boolean | |
5580 | is_elfv2_localentry0 (struct elf_link_hash_entry *h) | |
5581 | { | |
5582 | return (h != NULL | |
5583 | && h->type == STT_FUNC | |
5584 | && h->root.type == bfd_link_hash_defined | |
5585 | && (STO_PPC64_LOCAL_MASK & h->other) == 0 | |
ed7007c1 | 5586 | && !ppc_elf_hash_entry (h)->non_zero_localentry |
f378ab09 AM |
5587 | && is_ppc64_elf (h->root.u.def.section->owner) |
5588 | && abiversion (h->root.u.def.section->owner) >= 2); | |
5589 | } | |
5590 | ||
854b41e7 AM |
5591 | /* Return true if symbol is defined in a regular object file. */ |
5592 | ||
5593 | static bfd_boolean | |
5594 | is_static_defined (struct elf_link_hash_entry *h) | |
5595 | { | |
5596 | return ((h->root.type == bfd_link_hash_defined | |
5597 | || h->root.type == bfd_link_hash_defweak) | |
5598 | && h->root.u.def.section != NULL | |
5599 | && h->root.u.def.section->output_section != NULL); | |
5600 | } | |
5601 | ||
b31867b6 AM |
5602 | /* If FDH is a function descriptor symbol, return the associated code |
5603 | entry symbol if it is defined. Return NULL otherwise. */ | |
5604 | ||
5605 | static struct ppc_link_hash_entry * | |
5606 | defined_code_entry (struct ppc_link_hash_entry *fdh) | |
5607 | { | |
5608 | if (fdh->is_func_descriptor) | |
5609 | { | |
5610 | struct ppc_link_hash_entry *fh = ppc_follow_link (fdh->oh); | |
5611 | if (fh->elf.root.type == bfd_link_hash_defined | |
5612 | || fh->elf.root.type == bfd_link_hash_defweak) | |
5613 | return fh; | |
5614 | } | |
5615 | return NULL; | |
5616 | } | |
5617 | ||
5618 | /* If FH is a function code entry symbol, return the associated | |
5619 | function descriptor symbol if it is defined. Return NULL otherwise. */ | |
5620 | ||
5621 | static struct ppc_link_hash_entry * | |
5622 | defined_func_desc (struct ppc_link_hash_entry *fh) | |
5623 | { | |
5624 | if (fh->oh != NULL | |
5625 | && fh->oh->is_func_descriptor) | |
5626 | { | |
5627 | struct ppc_link_hash_entry *fdh = ppc_follow_link (fh->oh); | |
5628 | if (fdh->elf.root.type == bfd_link_hash_defined | |
5629 | || fdh->elf.root.type == bfd_link_hash_defweak) | |
5630 | return fdh; | |
5631 | } | |
5632 | return NULL; | |
5633 | } | |
5634 | ||
ed7007c1 AM |
5635 | /* Given H is a symbol that satisfies is_static_defined, return the |
5636 | value in the output file. */ | |
5637 | ||
5638 | static bfd_vma | |
5639 | defined_sym_val (struct elf_link_hash_entry *h) | |
5640 | { | |
5641 | return (h->root.u.def.section->output_section->vma | |
5642 | + h->root.u.def.section->output_offset | |
5643 | + h->root.u.def.value); | |
5644 | } | |
5645 | ||
5646 | /* Return true if H matches __tls_get_addr or one of its variants. */ | |
5647 | ||
5648 | static bfd_boolean | |
5649 | is_tls_get_addr (struct elf_link_hash_entry *h, | |
5650 | struct ppc_link_hash_table *htab) | |
5651 | { | |
9e7028aa AM |
5652 | return (h == &htab->tls_get_addr_fd->elf || h == &htab->tga_desc_fd->elf |
5653 | || h == &htab->tls_get_addr->elf || h == &htab->tga_desc->elf); | |
ed7007c1 AM |
5654 | } |
5655 | ||
8c5b4e52 AM |
5656 | static bfd_boolean func_desc_adjust (struct elf_link_hash_entry *, void *); |
5657 | ||
5658 | /* Garbage collect sections, after first dealing with dot-symbols. */ | |
5659 | ||
5660 | static bfd_boolean | |
5661 | ppc64_elf_gc_sections (bfd *abfd, struct bfd_link_info *info) | |
5662 | { | |
5663 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
5664 | ||
5665 | if (htab != NULL && htab->need_func_desc_adj) | |
5666 | { | |
5667 | elf_link_hash_traverse (&htab->elf, func_desc_adjust, info); | |
5668 | htab->need_func_desc_adj = 0; | |
5669 | } | |
5670 | return bfd_elf_gc_sections (abfd, info); | |
5671 | } | |
5672 | ||
74f0fb50 AM |
5673 | /* Mark all our entry sym sections, both opd and code section. */ |
5674 | ||
5675 | static void | |
5676 | ppc64_elf_gc_keep (struct bfd_link_info *info) | |
5677 | { | |
5678 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
5679 | struct bfd_sym_chain *sym; | |
5680 | ||
4dfe6ac6 NC |
5681 | if (htab == NULL) |
5682 | return; | |
5683 | ||
74f0fb50 AM |
5684 | for (sym = info->gc_sym_list; sym != NULL; sym = sym->next) |
5685 | { | |
b31867b6 | 5686 | struct ppc_link_hash_entry *eh, *fh; |
74f0fb50 AM |
5687 | asection *sec; |
5688 | ||
ed7007c1 AM |
5689 | eh = ppc_elf_hash_entry (elf_link_hash_lookup (&htab->elf, sym->name, |
5690 | FALSE, FALSE, TRUE)); | |
74f0fb50 AM |
5691 | if (eh == NULL) |
5692 | continue; | |
5693 | if (eh->elf.root.type != bfd_link_hash_defined | |
5694 | && eh->elf.root.type != bfd_link_hash_defweak) | |
5695 | continue; | |
5696 | ||
b31867b6 AM |
5697 | fh = defined_code_entry (eh); |
5698 | if (fh != NULL) | |
74f0fb50 | 5699 | { |
b31867b6 | 5700 | sec = fh->elf.root.u.def.section; |
74f0fb50 AM |
5701 | sec->flags |= SEC_KEEP; |
5702 | } | |
5703 | else if (get_opd_info (eh->elf.root.u.def.section) != NULL | |
5704 | && opd_entry_value (eh->elf.root.u.def.section, | |
5705 | eh->elf.root.u.def.value, | |
aef36ac1 | 5706 | &sec, NULL, FALSE) != (bfd_vma) -1) |
74f0fb50 AM |
5707 | sec->flags |= SEC_KEEP; |
5708 | ||
5709 | sec = eh->elf.root.u.def.section; | |
5710 | sec->flags |= SEC_KEEP; | |
5711 | } | |
5712 | } | |
5713 | ||
64d03ab5 AM |
5714 | /* Mark sections containing dynamically referenced symbols. When |
5715 | building shared libraries, we must assume that any visible symbol is | |
5716 | referenced. */ | |
5717 | ||
5718 | static bfd_boolean | |
5719 | ppc64_elf_gc_mark_dynamic_ref (struct elf_link_hash_entry *h, void *inf) | |
5720 | { | |
5721 | struct bfd_link_info *info = (struct bfd_link_info *) inf; | |
ed7007c1 | 5722 | struct ppc_link_hash_entry *eh = ppc_elf_hash_entry (h); |
b31867b6 | 5723 | struct ppc_link_hash_entry *fdh; |
b407645f | 5724 | struct bfd_elf_dynamic_list *d = info->dynamic_list; |
64d03ab5 | 5725 | |
64d03ab5 | 5726 | /* Dynamic linking info is on the func descriptor sym. */ |
b31867b6 AM |
5727 | fdh = defined_func_desc (eh); |
5728 | if (fdh != NULL) | |
5729 | eh = fdh; | |
64d03ab5 AM |
5730 | |
5731 | if ((eh->elf.root.type == bfd_link_hash_defined | |
5732 | || eh->elf.root.type == bfd_link_hash_defweak) | |
87e79a65 | 5733 | && ((eh->elf.ref_dynamic && !eh->elf.forced_local) |
1c9177d9 | 5734 | || ((eh->elf.def_regular || ELF_COMMON_DEF_P (&eh->elf)) |
64d03ab5 | 5735 | && ELF_ST_VISIBILITY (eh->elf.other) != STV_INTERNAL |
4c58e0d8 | 5736 | && ELF_ST_VISIBILITY (eh->elf.other) != STV_HIDDEN |
0e1862bb | 5737 | && (!bfd_link_executable (info) |
e278ae05 | 5738 | || info->gc_keep_exported |
b407645f AM |
5739 | || info->export_dynamic |
5740 | || (eh->elf.dynamic | |
5741 | && d != NULL | |
2cdcc330 AM |
5742 | && (*d->match) (&d->head, NULL, |
5743 | eh->elf.root.root.string))) | |
e278ae05 | 5744 | && (eh->elf.versioned >= versioned |
4c58e0d8 AM |
5745 | || !bfd_hide_sym_by_version (info->version_info, |
5746 | eh->elf.root.root.string))))) | |
64d03ab5 AM |
5747 | { |
5748 | asection *code_sec; | |
b31867b6 | 5749 | struct ppc_link_hash_entry *fh; |
64d03ab5 AM |
5750 | |
5751 | eh->elf.root.u.def.section->flags |= SEC_KEEP; | |
5752 | ||
5753 | /* Function descriptor syms cause the associated | |
5754 | function code sym section to be marked. */ | |
b31867b6 AM |
5755 | fh = defined_code_entry (eh); |
5756 | if (fh != NULL) | |
5757 | { | |
5758 | code_sec = fh->elf.root.u.def.section; | |
5759 | code_sec->flags |= SEC_KEEP; | |
5760 | } | |
64d03ab5 AM |
5761 | else if (get_opd_info (eh->elf.root.u.def.section) != NULL |
5762 | && opd_entry_value (eh->elf.root.u.def.section, | |
5763 | eh->elf.root.u.def.value, | |
aef36ac1 | 5764 | &code_sec, NULL, FALSE) != (bfd_vma) -1) |
64d03ab5 AM |
5765 | code_sec->flags |= SEC_KEEP; |
5766 | } | |
5767 | ||
5768 | return TRUE; | |
5769 | } | |
5770 | ||
5bd4f169 AM |
5771 | /* Return the section that should be marked against GC for a given |
5772 | relocation. */ | |
5773 | ||
5774 | static asection * | |
4ce794b7 | 5775 | ppc64_elf_gc_mark_hook (asection *sec, |
fb34365b | 5776 | struct bfd_link_info *info, |
4ce794b7 AM |
5777 | Elf_Internal_Rela *rel, |
5778 | struct elf_link_hash_entry *h, | |
5779 | Elf_Internal_Sym *sym) | |
5bd4f169 | 5780 | { |
ccfa59ea AM |
5781 | asection *rsec; |
5782 | ||
ccfa59ea AM |
5783 | /* Syms return NULL if we're marking .opd, so we avoid marking all |
5784 | function sections, as all functions are referenced in .opd. */ | |
5785 | rsec = NULL; | |
5786 | if (get_opd_info (sec) != NULL) | |
5787 | return rsec; | |
1e2f5b6e | 5788 | |
5bd4f169 AM |
5789 | if (h != NULL) |
5790 | { | |
04c9666a | 5791 | enum elf_ppc64_reloc_type r_type; |
b31867b6 | 5792 | struct ppc_link_hash_entry *eh, *fh, *fdh; |
a33d1f77 | 5793 | |
4ce794b7 | 5794 | r_type = ELF64_R_TYPE (rel->r_info); |
a33d1f77 | 5795 | switch (r_type) |
5bd4f169 AM |
5796 | { |
5797 | case R_PPC64_GNU_VTINHERIT: | |
5798 | case R_PPC64_GNU_VTENTRY: | |
5799 | break; | |
5800 | ||
5801 | default: | |
5802 | switch (h->root.type) | |
5803 | { | |
5804 | case bfd_link_hash_defined: | |
5805 | case bfd_link_hash_defweak: | |
ed7007c1 | 5806 | eh = ppc_elf_hash_entry (h); |
b31867b6 AM |
5807 | fdh = defined_func_desc (eh); |
5808 | if (fdh != NULL) | |
8c5b4e52 AM |
5809 | { |
5810 | /* -mcall-aixdesc code references the dot-symbol on | |
5811 | a call reloc. Mark the function descriptor too | |
5812 | against garbage collection. */ | |
5813 | fdh->elf.mark = 1; | |
60d67dc8 AM |
5814 | if (fdh->elf.is_weakalias) |
5815 | weakdef (&fdh->elf)->mark = 1; | |
8c5b4e52 AM |
5816 | eh = fdh; |
5817 | } | |
1e2f5b6e AM |
5818 | |
5819 | /* Function descriptor syms cause the associated | |
5820 | function code sym section to be marked. */ | |
b31867b6 AM |
5821 | fh = defined_code_entry (eh); |
5822 | if (fh != NULL) | |
ccfa59ea AM |
5823 | { |
5824 | /* They also mark their opd section. */ | |
74f0fb50 | 5825 | eh->elf.root.u.def.section->gc_mark = 1; |
ccfa59ea | 5826 | |
b31867b6 | 5827 | rsec = fh->elf.root.u.def.section; |
ccfa59ea | 5828 | } |
8387904d AM |
5829 | else if (get_opd_info (eh->elf.root.u.def.section) != NULL |
5830 | && opd_entry_value (eh->elf.root.u.def.section, | |
5831 | eh->elf.root.u.def.value, | |
aef36ac1 | 5832 | &rsec, NULL, FALSE) != (bfd_vma) -1) |
74f0fb50 | 5833 | eh->elf.root.u.def.section->gc_mark = 1; |
ccfa59ea | 5834 | else |
1e2f5b6e AM |
5835 | rsec = h->root.u.def.section; |
5836 | break; | |
5bd4f169 AM |
5837 | |
5838 | case bfd_link_hash_common: | |
1e2f5b6e AM |
5839 | rsec = h->root.u.c.p->section; |
5840 | break; | |
5bd4f169 AM |
5841 | |
5842 | default: | |
fb34365b | 5843 | return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym); |
5bd4f169 AM |
5844 | } |
5845 | } | |
5846 | } | |
5847 | else | |
5848 | { | |
74f0fb50 | 5849 | struct _opd_sec_data *opd; |
1e2f5b6e AM |
5850 | |
5851 | rsec = bfd_section_from_elf_index (sec->owner, sym->st_shndx); | |
74f0fb50 AM |
5852 | opd = get_opd_info (rsec); |
5853 | if (opd != NULL && opd->func_sec != NULL) | |
ccfa59ea | 5854 | { |
74f0fb50 | 5855 | rsec->gc_mark = 1; |
ccfa59ea | 5856 | |
51aecdc5 | 5857 | rsec = opd->func_sec[OPD_NDX (sym->st_value + rel->r_addend)]; |
ccfa59ea | 5858 | } |
5bd4f169 AM |
5859 | } |
5860 | ||
1e2f5b6e | 5861 | return rsec; |
5bd4f169 AM |
5862 | } |
5863 | ||
deb0e272 AM |
5864 | /* The maximum size of .sfpr. */ |
5865 | #define SFPR_MAX (218*4) | |
5866 | ||
5867 | struct sfpr_def_parms | |
5868 | { | |
699733f6 AM |
5869 | const char name[12]; |
5870 | unsigned char lo, hi; | |
2cdcc330 AM |
5871 | bfd_byte *(*write_ent) (bfd *, bfd_byte *, int); |
5872 | bfd_byte *(*write_tail) (bfd *, bfd_byte *, int); | |
deb0e272 AM |
5873 | }; |
5874 | ||
a4b6fadd AM |
5875 | /* Auto-generate _save*, _rest* functions in .sfpr. |
5876 | If STUB_SEC is non-null, define alias symbols in STUB_SEC | |
5877 | instead. */ | |
deb0e272 | 5878 | |
4dfe6ac6 | 5879 | static bfd_boolean |
a4b6fadd AM |
5880 | sfpr_define (struct bfd_link_info *info, |
5881 | const struct sfpr_def_parms *parm, | |
5882 | asection *stub_sec) | |
deb0e272 AM |
5883 | { |
5884 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
5885 | unsigned int i; | |
5886 | size_t len = strlen (parm->name); | |
5887 | bfd_boolean writing = FALSE; | |
699733f6 | 5888 | char sym[16]; |
deb0e272 | 5889 | |
4dfe6ac6 NC |
5890 | if (htab == NULL) |
5891 | return FALSE; | |
5892 | ||
deb0e272 AM |
5893 | memcpy (sym, parm->name, len); |
5894 | sym[len + 2] = 0; | |
5895 | ||
5896 | for (i = parm->lo; i <= parm->hi; i++) | |
5897 | { | |
a4b6fadd | 5898 | struct ppc_link_hash_entry *h; |
deb0e272 AM |
5899 | |
5900 | sym[len + 0] = i / 10 + '0'; | |
5901 | sym[len + 1] = i % 10 + '0'; | |
ed7007c1 AM |
5902 | h = ppc_elf_hash_entry (elf_link_hash_lookup (&htab->elf, sym, |
5903 | writing, TRUE, TRUE)); | |
a4b6fadd | 5904 | if (stub_sec != NULL) |
deb0e272 | 5905 | { |
a4b6fadd AM |
5906 | if (h != NULL |
5907 | && h->elf.root.type == bfd_link_hash_defined | |
5908 | && h->elf.root.u.def.section == htab->sfpr) | |
5909 | { | |
5910 | struct elf_link_hash_entry *s; | |
5911 | char buf[32]; | |
5912 | sprintf (buf, "%08x.%s", stub_sec->id & 0xffffffff, sym); | |
5913 | s = elf_link_hash_lookup (&htab->elf, buf, TRUE, TRUE, FALSE); | |
5914 | if (s == NULL) | |
5915 | return FALSE; | |
779f2ae7 | 5916 | if (s->root.type == bfd_link_hash_new) |
a4b6fadd AM |
5917 | { |
5918 | s->root.type = bfd_link_hash_defined; | |
5919 | s->root.u.def.section = stub_sec; | |
7dda8d3c | 5920 | s->root.u.def.value = (stub_sec->size - htab->sfpr->size |
a4b6fadd AM |
5921 | + h->elf.root.u.def.value); |
5922 | s->ref_regular = 1; | |
5923 | s->def_regular = 1; | |
5924 | s->ref_regular_nonweak = 1; | |
5925 | s->forced_local = 1; | |
5926 | s->non_elf = 0; | |
5927 | s->root.linker_def = 1; | |
5928 | } | |
5929 | } | |
5930 | continue; | |
5931 | } | |
5932 | if (h != NULL) | |
5933 | { | |
5934 | h->save_res = 1; | |
5935 | if (!h->elf.def_regular) | |
deb0e272 | 5936 | { |
a4b6fadd AM |
5937 | h->elf.root.type = bfd_link_hash_defined; |
5938 | h->elf.root.u.def.section = htab->sfpr; | |
5939 | h->elf.root.u.def.value = htab->sfpr->size; | |
5940 | h->elf.type = STT_FUNC; | |
5941 | h->elf.def_regular = 1; | |
b32547cd | 5942 | h->elf.non_elf = 0; |
a4b6fadd AM |
5943 | _bfd_elf_link_hash_hide_symbol (info, &h->elf, TRUE); |
5944 | writing = TRUE; | |
deb0e272 | 5945 | if (htab->sfpr->contents == NULL) |
a4b6fadd | 5946 | { |
2cdcc330 AM |
5947 | htab->sfpr->contents |
5948 | = bfd_alloc (htab->elf.dynobj, SFPR_MAX); | |
a4b6fadd AM |
5949 | if (htab->sfpr->contents == NULL) |
5950 | return FALSE; | |
5951 | } | |
deb0e272 AM |
5952 | } |
5953 | } | |
5954 | if (writing) | |
5955 | { | |
5956 | bfd_byte *p = htab->sfpr->contents + htab->sfpr->size; | |
5957 | if (i != parm->hi) | |
5958 | p = (*parm->write_ent) (htab->elf.dynobj, p, i); | |
5959 | else | |
5960 | p = (*parm->write_tail) (htab->elf.dynobj, p, i); | |
5961 | htab->sfpr->size = p - htab->sfpr->contents; | |
5962 | } | |
5963 | } | |
5964 | ||
5965 | return TRUE; | |
5966 | } | |
5967 | ||
5968 | static bfd_byte * | |
5969 | savegpr0 (bfd *abfd, bfd_byte *p, int r) | |
5970 | { | |
5971 | bfd_put_32 (abfd, STD_R0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p); | |
5972 | return p + 4; | |
5973 | } | |
5974 | ||
5975 | static bfd_byte * | |
5976 | savegpr0_tail (bfd *abfd, bfd_byte *p, int r) | |
5977 | { | |
5978 | p = savegpr0 (abfd, p, r); | |
a078d95a | 5979 | bfd_put_32 (abfd, STD_R0_0R1 + STK_LR, p); |
deb0e272 AM |
5980 | p = p + 4; |
5981 | bfd_put_32 (abfd, BLR, p); | |
5982 | return p + 4; | |
5983 | } | |
5984 | ||
5985 | static bfd_byte * | |
5986 | restgpr0 (bfd *abfd, bfd_byte *p, int r) | |
5987 | { | |
5988 | bfd_put_32 (abfd, LD_R0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p); | |
5989 | return p + 4; | |
5990 | } | |
5991 | ||
5992 | static bfd_byte * | |
5993 | restgpr0_tail (bfd *abfd, bfd_byte *p, int r) | |
5994 | { | |
a078d95a | 5995 | bfd_put_32 (abfd, LD_R0_0R1 + STK_LR, p); |
deb0e272 AM |
5996 | p = p + 4; |
5997 | p = restgpr0 (abfd, p, r); | |
5998 | bfd_put_32 (abfd, MTLR_R0, p); | |
5999 | p = p + 4; | |
6000 | if (r == 29) | |
6001 | { | |
6002 | p = restgpr0 (abfd, p, 30); | |
6003 | p = restgpr0 (abfd, p, 31); | |
6004 | } | |
6005 | bfd_put_32 (abfd, BLR, p); | |
6006 | return p + 4; | |
6007 | } | |
6008 | ||
6009 | static bfd_byte * | |
6010 | savegpr1 (bfd *abfd, bfd_byte *p, int r) | |
6011 | { | |
6012 | bfd_put_32 (abfd, STD_R0_0R12 + (r << 21) + (1 << 16) - (32 - r) * 8, p); | |
6013 | return p + 4; | |
6014 | } | |
6015 | ||
6016 | static bfd_byte * | |
6017 | savegpr1_tail (bfd *abfd, bfd_byte *p, int r) | |
6018 | { | |
6019 | p = savegpr1 (abfd, p, r); | |
6020 | bfd_put_32 (abfd, BLR, p); | |
6021 | return p + 4; | |
6022 | } | |
6023 | ||
6024 | static bfd_byte * | |
6025 | restgpr1 (bfd *abfd, bfd_byte *p, int r) | |
6026 | { | |
6027 | bfd_put_32 (abfd, LD_R0_0R12 + (r << 21) + (1 << 16) - (32 - r) * 8, p); | |
6028 | return p + 4; | |
6029 | } | |
6030 | ||
6031 | static bfd_byte * | |
6032 | restgpr1_tail (bfd *abfd, bfd_byte *p, int r) | |
6033 | { | |
6034 | p = restgpr1 (abfd, p, r); | |
6035 | bfd_put_32 (abfd, BLR, p); | |
6036 | return p + 4; | |
6037 | } | |
6038 | ||
6039 | static bfd_byte * | |
6040 | savefpr (bfd *abfd, bfd_byte *p, int r) | |
6041 | { | |
6042 | bfd_put_32 (abfd, STFD_FR0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p); | |
6043 | return p + 4; | |
6044 | } | |
6045 | ||
6046 | static bfd_byte * | |
6047 | savefpr0_tail (bfd *abfd, bfd_byte *p, int r) | |
6048 | { | |
6049 | p = savefpr (abfd, p, r); | |
a078d95a | 6050 | bfd_put_32 (abfd, STD_R0_0R1 + STK_LR, p); |
deb0e272 AM |
6051 | p = p + 4; |
6052 | bfd_put_32 (abfd, BLR, p); | |
6053 | return p + 4; | |
6054 | } | |
6055 | ||
6056 | static bfd_byte * | |
6057 | restfpr (bfd *abfd, bfd_byte *p, int r) | |
6058 | { | |
6059 | bfd_put_32 (abfd, LFD_FR0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p); | |
6060 | return p + 4; | |
6061 | } | |
6062 | ||
6063 | static bfd_byte * | |
6064 | restfpr0_tail (bfd *abfd, bfd_byte *p, int r) | |
6065 | { | |
a078d95a | 6066 | bfd_put_32 (abfd, LD_R0_0R1 + STK_LR, p); |
deb0e272 AM |
6067 | p = p + 4; |
6068 | p = restfpr (abfd, p, r); | |
6069 | bfd_put_32 (abfd, MTLR_R0, p); | |
6070 | p = p + 4; | |
6071 | if (r == 29) | |
6072 | { | |
6073 | p = restfpr (abfd, p, 30); | |
6074 | p = restfpr (abfd, p, 31); | |
6075 | } | |
6076 | bfd_put_32 (abfd, BLR, p); | |
6077 | return p + 4; | |
6078 | } | |
6079 | ||
6080 | static bfd_byte * | |
6081 | savefpr1_tail (bfd *abfd, bfd_byte *p, int r) | |
6082 | { | |
6083 | p = savefpr (abfd, p, r); | |
6084 | bfd_put_32 (abfd, BLR, p); | |
6085 | return p + 4; | |
6086 | } | |
6087 | ||
6088 | static bfd_byte * | |
6089 | restfpr1_tail (bfd *abfd, bfd_byte *p, int r) | |
6090 | { | |
6091 | p = restfpr (abfd, p, r); | |
6092 | bfd_put_32 (abfd, BLR, p); | |
6093 | return p + 4; | |
6094 | } | |
6095 | ||
6096 | static bfd_byte * | |
6097 | savevr (bfd *abfd, bfd_byte *p, int r) | |
6098 | { | |
6099 | bfd_put_32 (abfd, LI_R12_0 + (1 << 16) - (32 - r) * 16, p); | |
6100 | p = p + 4; | |
6101 | bfd_put_32 (abfd, STVX_VR0_R12_R0 + (r << 21), p); | |
6102 | return p + 4; | |
6103 | } | |
6104 | ||
6105 | static bfd_byte * | |
6106 | savevr_tail (bfd *abfd, bfd_byte *p, int r) | |
6107 | { | |
6108 | p = savevr (abfd, p, r); | |
6109 | bfd_put_32 (abfd, BLR, p); | |
6110 | return p + 4; | |
6111 | } | |
6112 | ||
6113 | static bfd_byte * | |
6114 | restvr (bfd *abfd, bfd_byte *p, int r) | |
6115 | { | |
6116 | bfd_put_32 (abfd, LI_R12_0 + (1 << 16) - (32 - r) * 16, p); | |
6117 | p = p + 4; | |
6118 | bfd_put_32 (abfd, LVX_VR0_R12_R0 + (r << 21), p); | |
6119 | return p + 4; | |
6120 | } | |
6121 | ||
6122 | static bfd_byte * | |
6123 | restvr_tail (bfd *abfd, bfd_byte *p, int r) | |
6124 | { | |
6125 | p = restvr (abfd, p, r); | |
6126 | bfd_put_32 (abfd, BLR, p); | |
6127 | return p + 4; | |
6128 | } | |
6129 | ||
9e7028aa AM |
6130 | #define STDU_R1_0R1 0xf8210001 |
6131 | #define ADDI_R1_R1 0x38210000 | |
6132 | ||
6133 | /* Emit prologue of wrapper preserving regs around a call to | |
6134 | __tls_get_addr_opt. */ | |
6135 | ||
6136 | static bfd_byte * | |
6137 | tls_get_addr_prologue (bfd *obfd, bfd_byte *p, struct ppc_link_hash_table *htab) | |
6138 | { | |
6139 | unsigned int i; | |
6140 | ||
6141 | bfd_put_32 (obfd, MFLR_R0, p); | |
6142 | p += 4; | |
6143 | bfd_put_32 (obfd, STD_R0_0R1 + 16, p); | |
6144 | p += 4; | |
6145 | ||
6146 | if (htab->opd_abi) | |
6147 | { | |
6148 | for (i = 4; i < 12; i++) | |
6149 | { | |
6150 | bfd_put_32 (obfd, | |
6151 | STD_R0_0R1 | i << 21 | (-(13 - i) * 8 & 0xffff), p); | |
6152 | p += 4; | |
6153 | } | |
6154 | bfd_put_32 (obfd, STDU_R1_0R1 | (-128 & 0xffff), p); | |
6155 | p += 4; | |
6156 | } | |
6157 | else | |
6158 | { | |
6159 | for (i = 4; i < 12; i++) | |
6160 | { | |
6161 | bfd_put_32 (obfd, | |
6162 | STD_R0_0R1 | i << 21 | (-(12 - i) * 8 & 0xffff), p); | |
6163 | p += 4; | |
6164 | } | |
6165 | bfd_put_32 (obfd, STDU_R1_0R1 | (-96 & 0xffff), p); | |
6166 | p += 4; | |
6167 | } | |
6168 | return p; | |
6169 | } | |
6170 | ||
6171 | /* Emit epilogue of wrapper preserving regs around a call to | |
6172 | __tls_get_addr_opt. */ | |
6173 | ||
6174 | static bfd_byte * | |
6175 | tls_get_addr_epilogue (bfd *obfd, bfd_byte *p, struct ppc_link_hash_table *htab) | |
6176 | { | |
6177 | unsigned int i; | |
6178 | ||
6179 | if (htab->opd_abi) | |
6180 | { | |
6181 | for (i = 4; i < 12; i++) | |
6182 | { | |
6183 | bfd_put_32 (obfd, LD_R0_0R1 | i << 21 | (128 - (13 - i) * 8), p); | |
6184 | p += 4; | |
6185 | } | |
6186 | bfd_put_32 (obfd, ADDI_R1_R1 | 128, p); | |
6187 | p += 4; | |
6188 | } | |
6189 | else | |
6190 | { | |
6191 | for (i = 4; i < 12; i++) | |
6192 | { | |
6193 | bfd_put_32 (obfd, LD_R0_0R1 | i << 21 | (96 - (12 - i) * 8), p); | |
6194 | p += 4; | |
6195 | } | |
6196 | bfd_put_32 (obfd, ADDI_R1_R1 | 96, p); | |
6197 | p += 4; | |
6198 | } | |
6199 | bfd_put_32 (obfd, LD_R0_0R1 | 16, p); | |
6200 | p += 4; | |
6201 | bfd_put_32 (obfd, MTLR_R0, p); | |
6202 | p += 4; | |
6203 | bfd_put_32 (obfd, BLR, p); | |
6204 | p += 4; | |
6205 | return p; | |
6206 | } | |
6207 | ||
e86ce104 AM |
6208 | /* Called via elf_link_hash_traverse to transfer dynamic linking |
6209 | information on function code symbol entries to their corresponding | |
6210 | function descriptor symbol entries. */ | |
deb0e272 | 6211 | |
b34976b6 | 6212 | static bfd_boolean |
4ce794b7 | 6213 | func_desc_adjust (struct elf_link_hash_entry *h, void *inf) |
5bd4f169 | 6214 | { |
e86ce104 | 6215 | struct bfd_link_info *info; |
65f38f15 | 6216 | struct ppc_link_hash_table *htab; |
50bc7936 AM |
6217 | struct ppc_link_hash_entry *fh; |
6218 | struct ppc_link_hash_entry *fdh; | |
6219 | bfd_boolean force_local; | |
5bd4f169 | 6220 | |
ed7007c1 | 6221 | fh = ppc_elf_hash_entry (h); |
50bc7936 | 6222 | if (fh->elf.root.type == bfd_link_hash_indirect) |
b34976b6 | 6223 | return TRUE; |
e86ce104 | 6224 | |
8c5b4e52 AM |
6225 | if (!fh->is_func) |
6226 | return TRUE; | |
6227 | ||
6228 | if (fh->elf.root.root.string[0] != '.' | |
6229 | || fh->elf.root.root.string[1] == '\0') | |
6230 | return TRUE; | |
6231 | ||
4ce794b7 | 6232 | info = inf; |
65f38f15 | 6233 | htab = ppc_hash_table (info); |
4dfe6ac6 NC |
6234 | if (htab == NULL) |
6235 | return FALSE; | |
5bd4f169 | 6236 | |
8c5b4e52 AM |
6237 | /* Find the corresponding function descriptor symbol. */ |
6238 | fdh = lookup_fdh (fh, htab); | |
6239 | ||
c09bdfe5 AM |
6240 | /* Resolve undefined references to dot-symbols as the value |
6241 | in the function descriptor, if we have one in a regular object. | |
6242 | This is to satisfy cases like ".quad .foo". Calls to functions | |
6243 | in dynamic objects are handled elsewhere. */ | |
8c5b4e52 AM |
6244 | if ((fh->elf.root.type == bfd_link_hash_undefined |
6245 | || fh->elf.root.type == bfd_link_hash_undefweak) | |
6246 | && (fdh->elf.root.type == bfd_link_hash_defined | |
6247 | || fdh->elf.root.type == bfd_link_hash_defweak) | |
b31867b6 AM |
6248 | && get_opd_info (fdh->elf.root.u.def.section) != NULL |
6249 | && opd_entry_value (fdh->elf.root.u.def.section, | |
6250 | fdh->elf.root.u.def.value, | |
c09bdfe5 | 6251 | &fh->elf.root.u.def.section, |
aef36ac1 | 6252 | &fh->elf.root.u.def.value, FALSE) != (bfd_vma) -1) |
c09bdfe5 | 6253 | { |
b31867b6 | 6254 | fh->elf.root.type = fdh->elf.root.type; |
f5385ebf | 6255 | fh->elf.forced_local = 1; |
b31867b6 AM |
6256 | fh->elf.def_regular = fdh->elf.def_regular; |
6257 | fh->elf.def_dynamic = fdh->elf.def_dynamic; | |
c09bdfe5 AM |
6258 | } |
6259 | ||
8c5b4e52 AM |
6260 | if (!fh->elf.dynamic) |
6261 | { | |
6262 | struct plt_entry *ent; | |
5bd4f169 | 6263 | |
8c5b4e52 AM |
6264 | for (ent = fh->elf.plt.plist; ent != NULL; ent = ent->next) |
6265 | if (ent->plt.refcount > 0) | |
6266 | break; | |
6267 | if (ent == NULL) | |
6268 | return TRUE; | |
6269 | } | |
5bd4f169 | 6270 | |
8c5b4e52 | 6271 | /* Create a descriptor as undefined if necessary. */ |
50bc7936 | 6272 | if (fdh == NULL |
0e1862bb | 6273 | && !bfd_link_executable (info) |
50bc7936 AM |
6274 | && (fh->elf.root.type == bfd_link_hash_undefined |
6275 | || fh->elf.root.type == bfd_link_hash_undefweak)) | |
6276 | { | |
908b32fc | 6277 | fdh = make_fdh (info, fh); |
bb700d78 AM |
6278 | if (fdh == NULL) |
6279 | return FALSE; | |
50bc7936 | 6280 | } |
648cca2c | 6281 | |
8c5b4e52 | 6282 | /* We can't support overriding of symbols on a fake descriptor. */ |
908b32fc AM |
6283 | if (fdh != NULL |
6284 | && fdh->fake | |
8c5b4e52 AM |
6285 | && (fh->elf.root.type == bfd_link_hash_defined |
6286 | || fh->elf.root.type == bfd_link_hash_defweak)) | |
6287 | _bfd_elf_link_hash_hide_symbol (info, &fdh->elf, TRUE); | |
908b32fc | 6288 | |
8c5b4e52 AM |
6289 | /* Transfer dynamic linking information to the function descriptor. */ |
6290 | if (fdh != NULL) | |
6291 | { | |
f5385ebf AM |
6292 | fdh->elf.ref_regular |= fh->elf.ref_regular; |
6293 | fdh->elf.ref_dynamic |= fh->elf.ref_dynamic; | |
6294 | fdh->elf.ref_regular_nonweak |= fh->elf.ref_regular_nonweak; | |
6295 | fdh->elf.non_got_ref |= fh->elf.non_got_ref; | |
8c5b4e52 AM |
6296 | fdh->elf.dynamic |= fh->elf.dynamic; |
6297 | fdh->elf.needs_plt |= (fh->elf.needs_plt | |
6298 | || fh->elf.type == STT_FUNC | |
6299 | || fh->elf.type == STT_GNU_IFUNC); | |
6300 | move_plt_plist (fh, fdh); | |
6301 | ||
6302 | if (!fdh->elf.forced_local | |
6303 | && fh->elf.dynindx != -1) | |
6304 | if (!bfd_elf_link_record_dynamic_symbol (info, &fdh->elf)) | |
6305 | return FALSE; | |
e86ce104 AM |
6306 | } |
6307 | ||
50bc7936 AM |
6308 | /* Now that the info is on the function descriptor, clear the |
6309 | function code sym info. Any function code syms for which we | |
6310 | don't have a definition in a regular file, we force local. | |
6311 | This prevents a shared library from exporting syms that have | |
6312 | been imported from another library. Function code syms that | |
6313 | are really in the library we must leave global to prevent the | |
6314 | linker dragging in a definition from a static library. */ | |
93f3fa99 AM |
6315 | force_local = (!fh->elf.def_regular |
6316 | || fdh == NULL | |
6317 | || !fdh->elf.def_regular | |
6318 | || fdh->elf.forced_local); | |
50bc7936 AM |
6319 | _bfd_elf_link_hash_hide_symbol (info, &fh->elf, force_local); |
6320 | ||
b34976b6 | 6321 | return TRUE; |
e86ce104 | 6322 | } |
40b8271b | 6323 | |
a4b6fadd AM |
6324 | static const struct sfpr_def_parms save_res_funcs[] = |
6325 | { | |
6326 | { "_savegpr0_", 14, 31, savegpr0, savegpr0_tail }, | |
6327 | { "_restgpr0_", 14, 29, restgpr0, restgpr0_tail }, | |
6328 | { "_restgpr0_", 30, 31, restgpr0, restgpr0_tail }, | |
6329 | { "_savegpr1_", 14, 31, savegpr1, savegpr1_tail }, | |
6330 | { "_restgpr1_", 14, 31, restgpr1, restgpr1_tail }, | |
6331 | { "_savefpr_", 14, 31, savefpr, savefpr0_tail }, | |
6332 | { "_restfpr_", 14, 29, restfpr, restfpr0_tail }, | |
6333 | { "_restfpr_", 30, 31, restfpr, restfpr0_tail }, | |
6334 | { "._savef", 14, 31, savefpr, savefpr1_tail }, | |
6335 | { "._restf", 14, 31, restfpr, restfpr1_tail }, | |
6336 | { "_savevr_", 20, 31, savevr, savevr_tail }, | |
6337 | { "_restvr_", 20, 31, restvr, restvr_tail } | |
6338 | }; | |
6339 | ||
e86ce104 | 6340 | /* Called near the start of bfd_elf_size_dynamic_sections. We use |
82bd7b59 AM |
6341 | this hook to a) provide some gcc support functions, and b) transfer |
6342 | dynamic linking information gathered so far on function code symbol | |
6343 | entries, to their corresponding function descriptor symbol entries. */ | |
deb0e272 | 6344 | |
b34976b6 | 6345 | static bfd_boolean |
4ce794b7 AM |
6346 | ppc64_elf_func_desc_adjust (bfd *obfd ATTRIBUTE_UNUSED, |
6347 | struct bfd_link_info *info) | |
e86ce104 AM |
6348 | { |
6349 | struct ppc_link_hash_table *htab; | |
6350 | ||
6351 | htab = ppc_hash_table (info); | |
4dfe6ac6 NC |
6352 | if (htab == NULL) |
6353 | return FALSE; | |
6354 | ||
b32547cd AM |
6355 | /* Provide any missing _save* and _rest* functions. */ |
6356 | if (htab->sfpr != NULL) | |
6357 | { | |
6358 | unsigned int i; | |
6359 | ||
6360 | htab->sfpr->size = 0; | |
6361 | for (i = 0; i < ARRAY_SIZE (save_res_funcs); i++) | |
6362 | if (!sfpr_define (info, &save_res_funcs[i], NULL)) | |
6363 | return FALSE; | |
6364 | if (htab->sfpr->size == 0) | |
6365 | htab->sfpr->flags |= SEC_EXCLUDE; | |
6366 | } | |
6367 | ||
6368 | if (bfd_link_relocatable (info)) | |
6369 | return TRUE; | |
6370 | ||
6371 | if (htab->elf.hgot != NULL) | |
dba6fa9b AM |
6372 | { |
6373 | _bfd_elf_link_hash_hide_symbol (info, htab->elf.hgot, TRUE); | |
6374 | /* Make .TOC. defined so as to prevent it being made dynamic. | |
6375 | The wrong value here is fixed later in ppc64_elf_set_toc. */ | |
43417696 AM |
6376 | if (!htab->elf.hgot->def_regular |
6377 | || htab->elf.hgot->root.type != bfd_link_hash_defined) | |
6378 | { | |
6379 | htab->elf.hgot->root.type = bfd_link_hash_defined; | |
6380 | htab->elf.hgot->root.u.def.value = 0; | |
6381 | htab->elf.hgot->root.u.def.section = bfd_abs_section_ptr; | |
6382 | htab->elf.hgot->def_regular = 1; | |
6383 | htab->elf.hgot->root.linker_def = 1; | |
6384 | } | |
dba6fa9b | 6385 | htab->elf.hgot->type = STT_OBJECT; |
2cdcc330 AM |
6386 | htab->elf.hgot->other |
6387 | = (htab->elf.hgot->other & ~ELF_ST_VISIBILITY (-1)) | STV_HIDDEN; | |
dba6fa9b | 6388 | } |
c66bb0ee | 6389 | |
8c5b4e52 AM |
6390 | if (htab->need_func_desc_adj) |
6391 | { | |
6392 | elf_link_hash_traverse (&htab->elf, func_desc_adjust, info); | |
6393 | htab->need_func_desc_adj = 0; | |
6394 | } | |
805fc799 | 6395 | |
b34976b6 | 6396 | return TRUE; |
e86ce104 AM |
6397 | } |
6398 | ||
d311bc8b | 6399 | /* Return true if we have dynamic relocs against H or any of its weak |
ab2477e1 AM |
6400 | aliases, that apply to read-only sections. Cannot be used after |
6401 | size_dynamic_sections. */ | |
d311bc8b AM |
6402 | |
6403 | static bfd_boolean | |
6404 | alias_readonly_dynrelocs (struct elf_link_hash_entry *h) | |
6405 | { | |
ed7007c1 | 6406 | struct ppc_link_hash_entry *eh = ppc_elf_hash_entry (h); |
d311bc8b AM |
6407 | do |
6408 | { | |
5dbc8b37 | 6409 | if (_bfd_elf_readonly_dynrelocs (&eh->elf)) |
d311bc8b | 6410 | return TRUE; |
ed7007c1 | 6411 | eh = ppc_elf_hash_entry (eh->elf.u.alias); |
2cdcc330 AM |
6412 | } |
6413 | while (eh != NULL && &eh->elf != h); | |
d311bc8b AM |
6414 | |
6415 | return FALSE; | |
6416 | } | |
8a2058b5 | 6417 | |
8a9e8e72 AM |
6418 | /* Return whether EH has pc-relative dynamic relocs. */ |
6419 | ||
6420 | static bfd_boolean | |
6421 | pc_dynrelocs (struct ppc_link_hash_entry *eh) | |
6422 | { | |
6423 | struct elf_dyn_relocs *p; | |
6424 | ||
190eb1dd | 6425 | for (p = eh->elf.dyn_relocs; p != NULL; p = p->next) |
8a9e8e72 AM |
6426 | if (p->pc_count != 0) |
6427 | return TRUE; | |
6428 | return FALSE; | |
6429 | } | |
6430 | ||
8a2058b5 AM |
6431 | /* Return true if a global entry stub will be created for H. Valid |
6432 | for ELFv2 before plt entries have been allocated. */ | |
6433 | ||
6434 | static bfd_boolean | |
6435 | global_entry_stub (struct elf_link_hash_entry *h) | |
6436 | { | |
6437 | struct plt_entry *pent; | |
6438 | ||
6439 | if (!h->pointer_equality_needed | |
6440 | || h->def_regular) | |
6441 | return FALSE; | |
6442 | ||
6443 | for (pent = h->plt.plist; pent != NULL; pent = pent->next) | |
6444 | if (pent->plt.refcount > 0 | |
6445 | && pent->addend == 0) | |
6446 | return TRUE; | |
6447 | ||
6448 | return FALSE; | |
6449 | } | |
6450 | ||
e86ce104 AM |
6451 | /* Adjust a symbol defined by a dynamic object and referenced by a |
6452 | regular object. The current definition is in some section of the | |
6453 | dynamic object, but we're not including those sections. We have to | |
6454 | change the definition to something the rest of the link can | |
6455 | understand. */ | |
6456 | ||
b34976b6 | 6457 | static bfd_boolean |
4ce794b7 AM |
6458 | ppc64_elf_adjust_dynamic_symbol (struct bfd_link_info *info, |
6459 | struct elf_link_hash_entry *h) | |
e86ce104 AM |
6460 | { |
6461 | struct ppc_link_hash_table *htab; | |
5474d94f | 6462 | asection *s, *srel; |
e86ce104 AM |
6463 | |
6464 | htab = ppc_hash_table (info); | |
4dfe6ac6 NC |
6465 | if (htab == NULL) |
6466 | return FALSE; | |
e86ce104 AM |
6467 | |
6468 | /* Deal with function syms. */ | |
6469 | if (h->type == STT_FUNC | |
e054468f | 6470 | || h->type == STT_GNU_IFUNC |
f5385ebf | 6471 | || h->needs_plt) |
e86ce104 | 6472 | { |
ed7007c1 | 6473 | bfd_boolean local = (ppc_elf_hash_entry (h)->save_res |
529fe20e AM |
6474 | || SYMBOL_CALLS_LOCAL (info, h) |
6475 | || UNDEFWEAK_NO_DYNAMIC_RELOC (info, h)); | |
6476 | /* Discard dyn_relocs when non-pic if we've decided that a | |
6477 | function symbol is local and not an ifunc. We keep dynamic | |
6478 | relocs for ifuncs when local rather than always emitting a | |
6479 | plt call stub for them and defining the symbol on the call | |
6480 | stub. We can't do that for ELFv1 anyway (a function symbol | |
6481 | is defined on a descriptor, not code) and it can be faster at | |
6482 | run-time due to not needing to bounce through a stub. The | |
6483 | dyn_relocs for ifuncs will be applied even in a static | |
6484 | executable. */ | |
6485 | if (!bfd_link_pic (info) | |
6486 | && h->type != STT_GNU_IFUNC | |
6487 | && local) | |
190eb1dd | 6488 | h->dyn_relocs = NULL; |
529fe20e | 6489 | |
e86ce104 AM |
6490 | /* Clear procedure linkage table information for any symbol that |
6491 | won't need a .plt entry. */ | |
411e1bfb AM |
6492 | struct plt_entry *ent; |
6493 | for (ent = h->plt.plist; ent != NULL; ent = ent->next) | |
6494 | if (ent->plt.refcount > 0) | |
6495 | break; | |
8387904d | 6496 | if (ent == NULL |
2d7ad24e AM |
6497 | || (h->type != STT_GNU_IFUNC |
6498 | && local | |
3e04d765 | 6499 | && (htab->can_convert_all_inline_plt |
ed7007c1 | 6500 | || (ppc_elf_hash_entry (h)->tls_mask |
3e04d765 | 6501 | & (TLS_TLS | PLT_KEEP)) != PLT_KEEP))) |
40b8271b | 6502 | { |
411e1bfb | 6503 | h->plt.plist = NULL; |
f5385ebf | 6504 | h->needs_plt = 0; |
d1eca1e4 | 6505 | h->pointer_equality_needed = 0; |
40b8271b | 6506 | } |
8a2058b5 | 6507 | else if (abiversion (info->output_bfd) >= 2) |
a345bc8d | 6508 | { |
d1eca1e4 AM |
6509 | /* Taking a function's address in a read/write section |
6510 | doesn't require us to define the function symbol in the | |
6511 | executable on a global entry stub. A dynamic reloc can | |
8a2058b5 AM |
6512 | be used instead. The reason we prefer a few more dynamic |
6513 | relocs is that calling via a global entry stub costs a | |
6514 | few more instructions, and pointer_equality_needed causes | |
6515 | extra work in ld.so when resolving these symbols. */ | |
529fe20e | 6516 | if (global_entry_stub (h)) |
d1eca1e4 | 6517 | { |
5dbc8b37 | 6518 | if (!_bfd_elf_readonly_dynrelocs (h)) |
529fe20e AM |
6519 | { |
6520 | h->pointer_equality_needed = 0; | |
04383fd1 AM |
6521 | /* If we haven't seen a branch reloc and the symbol |
6522 | isn't an ifunc then we don't need a plt entry. */ | |
529fe20e AM |
6523 | if (!h->needs_plt) |
6524 | h->plt.plist = NULL; | |
6525 | } | |
6526 | else if (!bfd_link_pic (info)) | |
6527 | /* We are going to be defining the function symbol on the | |
6528 | plt stub, so no dyn_relocs needed when non-pic. */ | |
190eb1dd | 6529 | h->dyn_relocs = NULL; |
d1eca1e4 AM |
6530 | } |
6531 | ||
3988aed5 AM |
6532 | /* ELFv2 function symbols can't have copy relocs. */ |
6533 | return TRUE; | |
6534 | } | |
6535 | else if (!h->needs_plt | |
5dbc8b37 | 6536 | && !_bfd_elf_readonly_dynrelocs (h)) |
3988aed5 | 6537 | { |
04383fd1 AM |
6538 | /* If we haven't seen a branch reloc and the symbol isn't an |
6539 | ifunc then we don't need a plt entry. */ | |
3988aed5 AM |
6540 | h->plt.plist = NULL; |
6541 | h->pointer_equality_needed = 0; | |
a345bc8d AM |
6542 | return TRUE; |
6543 | } | |
5bd4f169 | 6544 | } |
bbd7ec4a | 6545 | else |
411e1bfb | 6546 | h->plt.plist = NULL; |
5bd4f169 AM |
6547 | |
6548 | /* If this is a weak symbol, and there is a real definition, the | |
6549 | processor independent code will have arranged for us to see the | |
6550 | real definition first, and we can just use the same value. */ | |
60d67dc8 | 6551 | if (h->is_weakalias) |
5bd4f169 | 6552 | { |
60d67dc8 AM |
6553 | struct elf_link_hash_entry *def = weakdef (h); |
6554 | BFD_ASSERT (def->root.type == bfd_link_hash_defined); | |
6555 | h->root.u.def.section = def->root.u.def.section; | |
6556 | h->root.u.def.value = def->root.u.def.value; | |
4a7e5234 AM |
6557 | if (def->root.u.def.section == htab->elf.sdynbss |
6558 | || def->root.u.def.section == htab->elf.sdynrelro) | |
190eb1dd | 6559 | h->dyn_relocs = NULL; |
b34976b6 | 6560 | return TRUE; |
5bd4f169 AM |
6561 | } |
6562 | ||
5bd4f169 AM |
6563 | /* If we are creating a shared library, we must presume that the |
6564 | only references to the symbol are via the global offset table. | |
6565 | For such cases we need not do anything here; the relocations will | |
6566 | be handled correctly by relocate_section. */ | |
ec73ddcd | 6567 | if (!bfd_link_executable (info)) |
b34976b6 | 6568 | return TRUE; |
5bd4f169 | 6569 | |
65f38f15 AM |
6570 | /* If there are no references to this symbol that do not use the |
6571 | GOT, we don't need to generate a copy reloc. */ | |
f5385ebf | 6572 | if (!h->non_got_ref) |
b34976b6 | 6573 | return TRUE; |
65f38f15 | 6574 | |
b186458a | 6575 | /* Don't generate a copy reloc for symbols defined in the executable. */ |
d93d1c80 | 6576 | if (!h->def_dynamic || !h->ref_regular || h->def_regular |
b186458a | 6577 | |
d93d1c80 AM |
6578 | /* If -z nocopyreloc was given, don't generate them either. */ |
6579 | || info->nocopyreloc | |
a127494f | 6580 | |
dce2246a | 6581 | /* If we don't find any dynamic relocs in read-only sections, then |
d93d1c80 | 6582 | we'll be keeping the dynamic relocs and avoiding the copy reloc. */ |
1bdd8fac AM |
6583 | || (ELIMINATE_COPY_RELOCS |
6584 | && !h->needs_copy | |
6585 | && !alias_readonly_dynrelocs (h)) | |
65f38f15 | 6586 | |
d93d1c80 AM |
6587 | /* Protected variables do not work with .dynbss. The copy in |
6588 | .dynbss won't be used by the shared library with the protected | |
6589 | definition for the variable. Text relocations are preferable | |
6590 | to an incorrect program. */ | |
6591 | || h->protected_def) | |
529fe20e | 6592 | return TRUE; |
a127494f | 6593 | |
e1c6cf61 AM |
6594 | if (h->type == STT_FUNC |
6595 | || h->type == STT_GNU_IFUNC) | |
97b639ba | 6596 | { |
e1c6cf61 AM |
6597 | /* .dynbss copies of function symbols only work if we have |
6598 | ELFv1 dot-symbols. ELFv1 compilers since 2004 default to not | |
6599 | use dot-symbols and set the function symbol size to the text | |
6600 | size of the function rather than the size of the descriptor. | |
6601 | That's wrong for copying a descriptor. */ | |
ed7007c1 | 6602 | if (ppc_elf_hash_entry (h)->oh == NULL |
e1c6cf61 AM |
6603 | || !(h->size == 24 || h->size == 16)) |
6604 | return TRUE; | |
6605 | ||
6606 | /* We should never get here, but unfortunately there are old | |
6607 | versions of gcc (circa gcc-3.2) that improperly for the | |
6608 | ELFv1 ABI put initialized function pointers, vtable refs and | |
6609 | suchlike in read-only sections. Allow them to proceed, but | |
6610 | warn that this might break at runtime. */ | |
25f53a85 | 6611 | info->callbacks->einfo |
c1c8c1ef | 6612 | (_("%P: copy reloc against `%pT' requires lazy plt linking; " |
25f53a85 | 6613 | "avoid setting LD_BIND_NOW=1 or upgrade gcc\n"), |
97b639ba AM |
6614 | h->root.root.string); |
6615 | } | |
5d35169e AM |
6616 | |
6617 | /* This is a reference to a symbol defined by a dynamic object which | |
6618 | is not a function. */ | |
6619 | ||
5bd4f169 AM |
6620 | /* We must allocate the symbol in our .dynbss section, which will |
6621 | become part of the .bss section of the executable. There will be | |
6622 | an entry for this symbol in the .dynsym section. The dynamic | |
6623 | object will contain position independent code, so all references | |
6624 | from the dynamic object to this symbol will go through the global | |
6625 | offset table. The dynamic linker will use the .dynsym entry to | |
6626 | determine the address it must put in the global offset table, so | |
6627 | both the dynamic object and the regular object will refer to the | |
6628 | same memory location for the variable. */ | |
5474d94f AM |
6629 | if ((h->root.u.def.section->flags & SEC_READONLY) != 0) |
6630 | { | |
6631 | s = htab->elf.sdynrelro; | |
6632 | srel = htab->elf.sreldynrelro; | |
6633 | } | |
6634 | else | |
6635 | { | |
6636 | s = htab->elf.sdynbss; | |
6637 | srel = htab->elf.srelbss; | |
6638 | } | |
1d7e9d18 | 6639 | if ((h->root.u.def.section->flags & SEC_ALLOC) != 0 && h->size != 0) |
5bd4f169 | 6640 | { |
4a7e5234 AM |
6641 | /* We must generate a R_PPC64_COPY reloc to tell the dynamic |
6642 | linker to copy the initial value out of the dynamic object | |
6643 | and into the runtime process image. */ | |
5474d94f | 6644 | srel->size += sizeof (Elf64_External_Rela); |
f5385ebf | 6645 | h->needs_copy = 1; |
5bd4f169 AM |
6646 | } |
6647 | ||
529fe20e | 6648 | /* We no longer want dyn_relocs. */ |
190eb1dd | 6649 | h->dyn_relocs = NULL; |
6cabe1ea | 6650 | return _bfd_elf_adjust_dynamic_copy (info, h, s); |
5bd4f169 AM |
6651 | } |
6652 | ||
e86ce104 AM |
6653 | /* If given a function descriptor symbol, hide both the function code |
6654 | sym and the descriptor. */ | |
6655 | static void | |
4ce794b7 AM |
6656 | ppc64_elf_hide_symbol (struct bfd_link_info *info, |
6657 | struct elf_link_hash_entry *h, | |
6658 | bfd_boolean force_local) | |
e86ce104 | 6659 | { |
34814b9f | 6660 | struct ppc_link_hash_entry *eh; |
e86ce104 AM |
6661 | _bfd_elf_link_hash_hide_symbol (info, h, force_local); |
6662 | ||
87469ba2 AM |
6663 | if (ppc_hash_table (info) == NULL) |
6664 | return; | |
6665 | ||
ed7007c1 | 6666 | eh = ppc_elf_hash_entry (h); |
34814b9f | 6667 | if (eh->is_func_descriptor) |
e86ce104 | 6668 | { |
34814b9f | 6669 | struct ppc_link_hash_entry *fh = eh->oh; |
e86ce104 | 6670 | |
721956f4 | 6671 | if (fh == NULL) |
d1329ca3 AM |
6672 | { |
6673 | const char *p, *q; | |
b8ac2841 | 6674 | struct elf_link_hash_table *htab = elf_hash_table (info); |
d1329ca3 AM |
6675 | char save; |
6676 | ||
6677 | /* We aren't supposed to use alloca in BFD because on | |
6678 | systems which do not have alloca the version in libiberty | |
6679 | calls xmalloc, which might cause the program to crash | |
6680 | when it runs out of memory. This function doesn't have a | |
6681 | return status, so there's no way to gracefully return an | |
6682 | error. So cheat. We know that string[-1] can be safely | |
34814b9f AM |
6683 | accessed; It's either a string in an ELF string table, |
6684 | or allocated in an objalloc structure. */ | |
d1329ca3 | 6685 | |
34814b9f | 6686 | p = eh->elf.root.root.string - 1; |
d1329ca3 AM |
6687 | save = *p; |
6688 | *(char *) p = '.'; | |
ed7007c1 AM |
6689 | fh = ppc_elf_hash_entry (elf_link_hash_lookup (htab, p, FALSE, |
6690 | FALSE, FALSE)); | |
d1329ca3 AM |
6691 | *(char *) p = save; |
6692 | ||
6693 | /* Unfortunately, if it so happens that the string we were | |
6694 | looking for was allocated immediately before this string, | |
6695 | then we overwrote the string terminator. That's the only | |
6696 | reason the lookup should fail. */ | |
6697 | if (fh == NULL) | |
6698 | { | |
34814b9f AM |
6699 | q = eh->elf.root.root.string + strlen (eh->elf.root.root.string); |
6700 | while (q >= eh->elf.root.root.string && *q == *p) | |
d1329ca3 | 6701 | --q, --p; |
34814b9f | 6702 | if (q < eh->elf.root.root.string && *p == '.') |
ed7007c1 AM |
6703 | fh = ppc_elf_hash_entry (elf_link_hash_lookup (htab, p, FALSE, |
6704 | FALSE, FALSE)); | |
d1329ca3 AM |
6705 | } |
6706 | if (fh != NULL) | |
6707 | { | |
34814b9f AM |
6708 | eh->oh = fh; |
6709 | fh->oh = eh; | |
d1329ca3 AM |
6710 | } |
6711 | } | |
e86ce104 | 6712 | if (fh != NULL) |
34814b9f | 6713 | _bfd_elf_link_hash_hide_symbol (info, &fh->elf, force_local); |
e86ce104 AM |
6714 | } |
6715 | } | |
6716 | ||
411e1bfb | 6717 | static bfd_boolean |
8843416a AM |
6718 | get_sym_h (struct elf_link_hash_entry **hp, |
6719 | Elf_Internal_Sym **symp, | |
6720 | asection **symsecp, | |
f961d9dd | 6721 | unsigned char **tls_maskp, |
8843416a AM |
6722 | Elf_Internal_Sym **locsymsp, |
6723 | unsigned long r_symndx, | |
6724 | bfd *ibfd) | |
411e1bfb | 6725 | { |
0ffa91dd | 6726 | Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (ibfd); |
411e1bfb AM |
6727 | |
6728 | if (r_symndx >= symtab_hdr->sh_info) | |
6729 | { | |
6730 | struct elf_link_hash_entry **sym_hashes = elf_sym_hashes (ibfd); | |
6731 | struct elf_link_hash_entry *h; | |
6732 | ||
6733 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; | |
b31867b6 | 6734 | h = elf_follow_link (h); |
411e1bfb AM |
6735 | |
6736 | if (hp != NULL) | |
6737 | *hp = h; | |
6738 | ||
6739 | if (symp != NULL) | |
6740 | *symp = NULL; | |
6741 | ||
6742 | if (symsecp != NULL) | |
6743 | { | |
6744 | asection *symsec = NULL; | |
6745 | if (h->root.type == bfd_link_hash_defined | |
6746 | || h->root.type == bfd_link_hash_defweak) | |
6747 | symsec = h->root.u.def.section; | |
6748 | *symsecp = symsec; | |
6749 | } | |
6750 | ||
e7b938ca | 6751 | if (tls_maskp != NULL) |
ed7007c1 | 6752 | *tls_maskp = &ppc_elf_hash_entry (h)->tls_mask; |
411e1bfb AM |
6753 | } |
6754 | else | |
6755 | { | |
6756 | Elf_Internal_Sym *sym; | |
6757 | Elf_Internal_Sym *locsyms = *locsymsp; | |
6758 | ||
6759 | if (locsyms == NULL) | |
6760 | { | |
6761 | locsyms = (Elf_Internal_Sym *) symtab_hdr->contents; | |
6762 | if (locsyms == NULL) | |
6763 | locsyms = bfd_elf_get_elf_syms (ibfd, symtab_hdr, | |
6764 | symtab_hdr->sh_info, | |
6765 | 0, NULL, NULL, NULL); | |
6766 | if (locsyms == NULL) | |
6767 | return FALSE; | |
6768 | *locsymsp = locsyms; | |
6769 | } | |
6770 | sym = locsyms + r_symndx; | |
6771 | ||
6772 | if (hp != NULL) | |
6773 | *hp = NULL; | |
6774 | ||
6775 | if (symp != NULL) | |
6776 | *symp = sym; | |
6777 | ||
6778 | if (symsecp != NULL) | |
cb33740c | 6779 | *symsecp = bfd_section_from_elf_index (ibfd, sym->st_shndx); |
411e1bfb | 6780 | |
e7b938ca | 6781 | if (tls_maskp != NULL) |
411e1bfb AM |
6782 | { |
6783 | struct got_entry **lgot_ents; | |
f961d9dd | 6784 | unsigned char *tls_mask; |
411e1bfb | 6785 | |
e7b938ca | 6786 | tls_mask = NULL; |
411e1bfb AM |
6787 | lgot_ents = elf_local_got_ents (ibfd); |
6788 | if (lgot_ents != NULL) | |
6789 | { | |
e054468f AM |
6790 | struct plt_entry **local_plt = (struct plt_entry **) |
6791 | (lgot_ents + symtab_hdr->sh_info); | |
f961d9dd | 6792 | unsigned char *lgot_masks = (unsigned char *) |
e054468f | 6793 | (local_plt + symtab_hdr->sh_info); |
e7b938ca | 6794 | tls_mask = &lgot_masks[r_symndx]; |
411e1bfb | 6795 | } |
e7b938ca | 6796 | *tls_maskp = tls_mask; |
411e1bfb AM |
6797 | } |
6798 | } | |
6799 | return TRUE; | |
6800 | } | |
6801 | ||
e7b938ca | 6802 | /* Returns TLS_MASKP for the given REL symbol. Function return is 0 on |
951fd09b | 6803 | error, 2 on a toc GD type suitable for optimization, 3 on a toc LD |
ad8e1ba5 | 6804 | type suitable for optimization, and 1 otherwise. */ |
951fd09b AM |
6805 | |
6806 | static int | |
f961d9dd | 6807 | get_tls_mask (unsigned char **tls_maskp, |
3a71aa26 AM |
6808 | unsigned long *toc_symndx, |
6809 | bfd_vma *toc_addend, | |
0d4792f7 | 6810 | Elf_Internal_Sym **locsymsp, |
3a71aa26 AM |
6811 | const Elf_Internal_Rela *rel, |
6812 | bfd *ibfd) | |
411e1bfb AM |
6813 | { |
6814 | unsigned long r_symndx; | |
0d4792f7 | 6815 | int next_r; |
411e1bfb AM |
6816 | struct elf_link_hash_entry *h; |
6817 | Elf_Internal_Sym *sym; | |
6818 | asection *sec; | |
6819 | bfd_vma off; | |
6820 | ||
6821 | r_symndx = ELF64_R_SYM (rel->r_info); | |
e7b938ca | 6822 | if (!get_sym_h (&h, &sym, &sec, tls_maskp, locsymsp, r_symndx, ibfd)) |
951fd09b | 6823 | return 0; |
411e1bfb | 6824 | |
37da22e5 AM |
6825 | if ((*tls_maskp != NULL |
6826 | && (**tls_maskp & TLS_TLS) != 0 | |
6827 | && **tls_maskp != (TLS_TLS | TLS_MARK)) | |
411e1bfb | 6828 | || sec == NULL |
6bee8834 | 6829 | || ppc64_elf_section_data (sec) == NULL |
7c8fe5c4 | 6830 | || ppc64_elf_section_data (sec)->sec_type != sec_toc) |
951fd09b | 6831 | return 1; |
411e1bfb AM |
6832 | |
6833 | /* Look inside a TOC section too. */ | |
6834 | if (h != NULL) | |
6835 | { | |
6836 | BFD_ASSERT (h->root.type == bfd_link_hash_defined); | |
6837 | off = h->root.u.def.value; | |
6838 | } | |
6839 | else | |
6840 | off = sym->st_value; | |
6841 | off += rel->r_addend; | |
6842 | BFD_ASSERT (off % 8 == 0); | |
3a71aa26 AM |
6843 | r_symndx = ppc64_elf_section_data (sec)->u.toc.symndx[off / 8]; |
6844 | next_r = ppc64_elf_section_data (sec)->u.toc.symndx[off / 8 + 1]; | |
0d4792f7 AM |
6845 | if (toc_symndx != NULL) |
6846 | *toc_symndx = r_symndx; | |
3a71aa26 AM |
6847 | if (toc_addend != NULL) |
6848 | *toc_addend = ppc64_elf_section_data (sec)->u.toc.add[off / 8]; | |
6849 | if (!get_sym_h (&h, &sym, &sec, tls_maskp, locsymsp, r_symndx, ibfd)) | |
6850 | return 0; | |
854b41e7 | 6851 | if ((h == NULL || is_static_defined (h)) |
0d4792f7 AM |
6852 | && (next_r == -1 || next_r == -2)) |
6853 | return 1 - next_r; | |
951fd09b | 6854 | return 1; |
411e1bfb AM |
6855 | } |
6856 | ||
3b421ab3 AM |
6857 | /* Find (or create) an entry in the tocsave hash table. */ |
6858 | ||
6859 | static struct tocsave_entry * | |
6860 | tocsave_find (struct ppc_link_hash_table *htab, | |
6861 | enum insert_option insert, | |
6862 | Elf_Internal_Sym **local_syms, | |
6863 | const Elf_Internal_Rela *irela, | |
6864 | bfd *ibfd) | |
6865 | { | |
6866 | unsigned long r_indx; | |
6867 | struct elf_link_hash_entry *h; | |
6868 | Elf_Internal_Sym *sym; | |
6869 | struct tocsave_entry ent, *p; | |
6870 | hashval_t hash; | |
6871 | struct tocsave_entry **slot; | |
6872 | ||
6873 | r_indx = ELF64_R_SYM (irela->r_info); | |
6874 | if (!get_sym_h (&h, &sym, &ent.sec, NULL, local_syms, r_indx, ibfd)) | |
6875 | return NULL; | |
6876 | if (ent.sec == NULL || ent.sec->output_section == NULL) | |
6877 | { | |
4eca0228 | 6878 | _bfd_error_handler |
871b3ab2 | 6879 | (_("%pB: undefined symbol on R_PPC64_TOCSAVE relocation"), ibfd); |
3b421ab3 AM |
6880 | return NULL; |
6881 | } | |
6882 | ||
6883 | if (h != NULL) | |
6884 | ent.offset = h->root.u.def.value; | |
6885 | else | |
6886 | ent.offset = sym->st_value; | |
6887 | ent.offset += irela->r_addend; | |
6888 | ||
6889 | hash = tocsave_htab_hash (&ent); | |
6890 | slot = ((struct tocsave_entry **) | |
6891 | htab_find_slot_with_hash (htab->tocsave_htab, &ent, hash, insert)); | |
6892 | if (slot == NULL) | |
6893 | return NULL; | |
6894 | ||
6895 | if (*slot == NULL) | |
6896 | { | |
6897 | p = (struct tocsave_entry *) bfd_alloc (ibfd, sizeof (*p)); | |
6898 | if (p == NULL) | |
6899 | return NULL; | |
6900 | *p = ent; | |
6901 | *slot = p; | |
6902 | } | |
6903 | return *slot; | |
6904 | } | |
6905 | ||
754021d0 | 6906 | /* Adjust all global syms defined in opd sections. In gcc generated |
8387904d | 6907 | code for the old ABI, these will already have been done. */ |
754021d0 AM |
6908 | |
6909 | static bfd_boolean | |
6910 | adjust_opd_syms (struct elf_link_hash_entry *h, void *inf ATTRIBUTE_UNUSED) | |
6911 | { | |
6912 | struct ppc_link_hash_entry *eh; | |
6913 | asection *sym_sec; | |
74f0fb50 | 6914 | struct _opd_sec_data *opd; |
754021d0 AM |
6915 | |
6916 | if (h->root.type == bfd_link_hash_indirect) | |
6917 | return TRUE; | |
6918 | ||
754021d0 AM |
6919 | if (h->root.type != bfd_link_hash_defined |
6920 | && h->root.type != bfd_link_hash_defweak) | |
6921 | return TRUE; | |
6922 | ||
ed7007c1 | 6923 | eh = ppc_elf_hash_entry (h); |
754021d0 AM |
6924 | if (eh->adjust_done) |
6925 | return TRUE; | |
6926 | ||
6927 | sym_sec = eh->elf.root.u.def.section; | |
74f0fb50 AM |
6928 | opd = get_opd_info (sym_sec); |
6929 | if (opd != NULL && opd->adjust != NULL) | |
754021d0 | 6930 | { |
51aecdc5 | 6931 | long adjust = opd->adjust[OPD_NDX (eh->elf.root.u.def.value)]; |
4025353c AM |
6932 | if (adjust == -1) |
6933 | { | |
6934 | /* This entry has been deleted. */ | |
b3fac117 | 6935 | asection *dsec = ppc64_elf_tdata (sym_sec->owner)->deleted_section; |
81688140 AM |
6936 | if (dsec == NULL) |
6937 | { | |
6938 | for (dsec = sym_sec->owner->sections; dsec; dsec = dsec->next) | |
dbaa2011 | 6939 | if (discarded_section (dsec)) |
81688140 | 6940 | { |
b3fac117 | 6941 | ppc64_elf_tdata (sym_sec->owner)->deleted_section = dsec; |
81688140 AM |
6942 | break; |
6943 | } | |
6944 | } | |
4025353c | 6945 | eh->elf.root.u.def.value = 0; |
81688140 | 6946 | eh->elf.root.u.def.section = dsec; |
4025353c AM |
6947 | } |
6948 | else | |
6949 | eh->elf.root.u.def.value += adjust; | |
754021d0 AM |
6950 | eh->adjust_done = 1; |
6951 | } | |
6952 | return TRUE; | |
6953 | } | |
6954 | ||
8c1d1bb8 | 6955 | /* Handles decrementing dynamic reloc counts for the reloc specified by |
19e08130 | 6956 | R_INFO in section SEC. If LOCAL_SYMS is NULL, then H and SYM |
8c1d1bb8 AM |
6957 | have already been determined. */ |
6958 | ||
6959 | static bfd_boolean | |
6960 | dec_dynrel_count (bfd_vma r_info, | |
6961 | asection *sec, | |
6962 | struct bfd_link_info *info, | |
6963 | Elf_Internal_Sym **local_syms, | |
6964 | struct elf_link_hash_entry *h, | |
19e08130 | 6965 | Elf_Internal_Sym *sym) |
8c1d1bb8 AM |
6966 | { |
6967 | enum elf_ppc64_reloc_type r_type; | |
19e08130 | 6968 | asection *sym_sec = NULL; |
8c1d1bb8 AM |
6969 | |
6970 | /* Can this reloc be dynamic? This switch, and later tests here | |
6971 | should be kept in sync with the code in check_relocs. */ | |
6972 | r_type = ELF64_R_TYPE (r_info); | |
6973 | switch (r_type) | |
6974 | { | |
6975 | default: | |
6976 | return TRUE; | |
6977 | ||
1bdd8fac AM |
6978 | case R_PPC64_TOC16: |
6979 | case R_PPC64_TOC16_DS: | |
6980 | case R_PPC64_TOC16_LO: | |
6981 | case R_PPC64_TOC16_HI: | |
6982 | case R_PPC64_TOC16_HA: | |
6983 | case R_PPC64_TOC16_LO_DS: | |
6984 | if (h == NULL) | |
6985 | return TRUE; | |
6986 | break; | |
6987 | ||
8c1d1bb8 AM |
6988 | case R_PPC64_TPREL16: |
6989 | case R_PPC64_TPREL16_LO: | |
6990 | case R_PPC64_TPREL16_HI: | |
6991 | case R_PPC64_TPREL16_HA: | |
6992 | case R_PPC64_TPREL16_DS: | |
6993 | case R_PPC64_TPREL16_LO_DS: | |
f9c6b907 AM |
6994 | case R_PPC64_TPREL16_HIGH: |
6995 | case R_PPC64_TPREL16_HIGHA: | |
8c1d1bb8 AM |
6996 | case R_PPC64_TPREL16_HIGHER: |
6997 | case R_PPC64_TPREL16_HIGHERA: | |
6998 | case R_PPC64_TPREL16_HIGHEST: | |
6999 | case R_PPC64_TPREL16_HIGHESTA: | |
8c1d1bb8 | 7000 | case R_PPC64_TPREL64: |
c213164a | 7001 | case R_PPC64_TPREL34: |
8c1d1bb8 AM |
7002 | case R_PPC64_DTPMOD64: |
7003 | case R_PPC64_DTPREL64: | |
7004 | case R_PPC64_ADDR64: | |
7005 | case R_PPC64_REL30: | |
7006 | case R_PPC64_REL32: | |
7007 | case R_PPC64_REL64: | |
7008 | case R_PPC64_ADDR14: | |
7009 | case R_PPC64_ADDR14_BRNTAKEN: | |
7010 | case R_PPC64_ADDR14_BRTAKEN: | |
7011 | case R_PPC64_ADDR16: | |
7012 | case R_PPC64_ADDR16_DS: | |
7013 | case R_PPC64_ADDR16_HA: | |
7014 | case R_PPC64_ADDR16_HI: | |
f9c6b907 AM |
7015 | case R_PPC64_ADDR16_HIGH: |
7016 | case R_PPC64_ADDR16_HIGHA: | |
8c1d1bb8 AM |
7017 | case R_PPC64_ADDR16_HIGHER: |
7018 | case R_PPC64_ADDR16_HIGHERA: | |
7019 | case R_PPC64_ADDR16_HIGHEST: | |
7020 | case R_PPC64_ADDR16_HIGHESTA: | |
7021 | case R_PPC64_ADDR16_LO: | |
7022 | case R_PPC64_ADDR16_LO_DS: | |
7023 | case R_PPC64_ADDR24: | |
7024 | case R_PPC64_ADDR32: | |
7025 | case R_PPC64_UADDR16: | |
7026 | case R_PPC64_UADDR32: | |
7027 | case R_PPC64_UADDR64: | |
7028 | case R_PPC64_TOC: | |
5663e321 AM |
7029 | case R_PPC64_D34: |
7030 | case R_PPC64_D34_LO: | |
7031 | case R_PPC64_D34_HI30: | |
7032 | case R_PPC64_D34_HA30: | |
7033 | case R_PPC64_ADDR16_HIGHER34: | |
7034 | case R_PPC64_ADDR16_HIGHERA34: | |
7035 | case R_PPC64_ADDR16_HIGHEST34: | |
7036 | case R_PPC64_ADDR16_HIGHESTA34: | |
7037 | case R_PPC64_D28: | |
8c1d1bb8 AM |
7038 | break; |
7039 | } | |
7040 | ||
7041 | if (local_syms != NULL) | |
7042 | { | |
7043 | unsigned long r_symndx; | |
8c1d1bb8 AM |
7044 | bfd *ibfd = sec->owner; |
7045 | ||
7046 | r_symndx = ELF64_R_SYM (r_info); | |
7047 | if (!get_sym_h (&h, &sym, &sym_sec, NULL, local_syms, r_symndx, ibfd)) | |
7048 | return FALSE; | |
7049 | } | |
7050 | ||
ec73ddcd AM |
7051 | if ((h != NULL |
7052 | && (h->root.type == bfd_link_hash_defweak | |
7053 | || !h->def_regular)) | |
7054 | || (h != NULL | |
7055 | && !bfd_link_executable (info) | |
7056 | && !SYMBOLIC_BIND (info, h)) | |
7057 | || (bfd_link_pic (info) | |
7058 | && must_be_dyn_reloc (info, r_type)) | |
7059 | || (!bfd_link_pic (info) | |
7060 | && (h != NULL | |
7061 | ? h->type == STT_GNU_IFUNC | |
7062 | : ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC))) | |
8c1d1bb8 AM |
7063 | ; |
7064 | else | |
7065 | return TRUE; | |
7066 | ||
7067 | if (h != NULL) | |
6edfbbad | 7068 | { |
19e08130 AM |
7069 | struct elf_dyn_relocs *p; |
7070 | struct elf_dyn_relocs **pp; | |
190eb1dd | 7071 | pp = &h->dyn_relocs; |
19e08130 AM |
7072 | |
7073 | /* elf_gc_sweep may have already removed all dyn relocs associated | |
7074 | with local syms for a given section. Also, symbol flags are | |
7075 | changed by elf_gc_sweep_symbol, confusing the test above. Don't | |
7076 | report a dynreloc miscount. */ | |
7077 | if (*pp == NULL && info->gc_sections) | |
7078 | return TRUE; | |
7079 | ||
7080 | while ((p = *pp) != NULL) | |
60124e18 | 7081 | { |
19e08130 AM |
7082 | if (p->sec == sec) |
7083 | { | |
7084 | if (!must_be_dyn_reloc (info, r_type)) | |
7085 | p->pc_count -= 1; | |
7086 | p->count -= 1; | |
7087 | if (p->count == 0) | |
7088 | *pp = p->next; | |
7089 | return TRUE; | |
7090 | } | |
7091 | pp = &p->next; | |
60124e18 | 7092 | } |
6edfbbad | 7093 | } |
19e08130 AM |
7094 | else |
7095 | { | |
7096 | struct ppc_dyn_relocs *p; | |
7097 | struct ppc_dyn_relocs **pp; | |
7098 | void *vpp; | |
7099 | bfd_boolean is_ifunc; | |
8c1d1bb8 | 7100 | |
19e08130 AM |
7101 | if (local_syms == NULL) |
7102 | sym_sec = bfd_section_from_elf_index (sec->owner, sym->st_shndx); | |
7103 | if (sym_sec == NULL) | |
7104 | sym_sec = sec; | |
c57da1a7 | 7105 | |
19e08130 AM |
7106 | vpp = &elf_section_data (sym_sec)->local_dynrel; |
7107 | pp = (struct ppc_dyn_relocs **) vpp; | |
7108 | ||
7109 | if (*pp == NULL && info->gc_sections) | |
7110 | return TRUE; | |
7111 | ||
7112 | is_ifunc = ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC; | |
7113 | while ((p = *pp) != NULL) | |
8c1d1bb8 | 7114 | { |
19e08130 AM |
7115 | if (p->sec == sec && p->ifunc == is_ifunc) |
7116 | { | |
7117 | p->count -= 1; | |
7118 | if (p->count == 0) | |
7119 | *pp = p->next; | |
7120 | return TRUE; | |
7121 | } | |
7122 | pp = &p->next; | |
8c1d1bb8 | 7123 | } |
8c1d1bb8 AM |
7124 | } |
7125 | ||
695344c0 | 7126 | /* xgettext:c-format */ |
cf97bcb0 AM |
7127 | _bfd_error_handler (_("dynreloc miscount for %pB, section %pA"), |
7128 | sec->owner, sec); | |
8c1d1bb8 AM |
7129 | bfd_set_error (bfd_error_bad_value); |
7130 | return FALSE; | |
7131 | } | |
7132 | ||
754021d0 AM |
7133 | /* Remove unused Official Procedure Descriptor entries. Currently we |
7134 | only remove those associated with functions in discarded link-once | |
7135 | sections, or weakly defined functions that have been overridden. It | |
7136 | would be possible to remove many more entries for statically linked | |
7137 | applications. */ | |
7138 | ||
b34976b6 | 7139 | bfd_boolean |
e7d1c40c | 7140 | ppc64_elf_edit_opd (struct bfd_link_info *info) |
1e2f5b6e AM |
7141 | { |
7142 | bfd *ibfd; | |
754021d0 | 7143 | bfd_boolean some_edited = FALSE; |
3f764659 | 7144 | asection *need_pad = NULL; |
e7d1c40c AM |
7145 | struct ppc_link_hash_table *htab; |
7146 | ||
7147 | htab = ppc_hash_table (info); | |
7148 | if (htab == NULL) | |
7149 | return FALSE; | |
1e2f5b6e | 7150 | |
c72f2fb2 | 7151 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next) |
1e2f5b6e AM |
7152 | { |
7153 | asection *sec; | |
7154 | Elf_Internal_Rela *relstart, *rel, *relend; | |
7155 | Elf_Internal_Shdr *symtab_hdr; | |
6cdc0ccc | 7156 | Elf_Internal_Sym *local_syms; |
74f0fb50 | 7157 | struct _opd_sec_data *opd; |
51aecdc5 | 7158 | bfd_boolean need_edit, add_aux_fields, broken; |
3f764659 | 7159 | bfd_size_type cnt_16b = 0; |
1e2f5b6e | 7160 | |
854b41e7 AM |
7161 | if (!is_ppc64_elf (ibfd)) |
7162 | continue; | |
7163 | ||
1e2f5b6e | 7164 | sec = bfd_get_section_by_name (ibfd, ".opd"); |
46de2a7c | 7165 | if (sec == NULL || sec->size == 0) |
1e2f5b6e AM |
7166 | continue; |
7167 | ||
dbaa2011 | 7168 | if (sec->sec_info_type == SEC_INFO_TYPE_JUST_SYMS) |
4b85d634 AM |
7169 | continue; |
7170 | ||
1e2f5b6e AM |
7171 | if (sec->output_section == bfd_abs_section_ptr) |
7172 | continue; | |
7173 | ||
7174 | /* Look through the section relocs. */ | |
7175 | if ((sec->flags & SEC_RELOC) == 0 || sec->reloc_count == 0) | |
7176 | continue; | |
7177 | ||
6cdc0ccc | 7178 | local_syms = NULL; |
0ffa91dd | 7179 | symtab_hdr = &elf_symtab_hdr (ibfd); |
1e2f5b6e AM |
7180 | |
7181 | /* Read the relocations. */ | |
4ce794b7 | 7182 | relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL, |
45d6a902 | 7183 | info->keep_memory); |
1e2f5b6e | 7184 | if (relstart == NULL) |
b34976b6 | 7185 | return FALSE; |
1e2f5b6e AM |
7186 | |
7187 | /* First run through the relocs to check they are sane, and to | |
7188 | determine whether we need to edit this opd section. */ | |
b34976b6 | 7189 | need_edit = FALSE; |
51aecdc5 | 7190 | broken = FALSE; |
3f764659 | 7191 | need_pad = sec; |
1e2f5b6e | 7192 | relend = relstart + sec->reloc_count; |
50bc7936 | 7193 | for (rel = relstart; rel < relend; ) |
1e2f5b6e | 7194 | { |
04c9666a | 7195 | enum elf_ppc64_reloc_type r_type; |
1e2f5b6e AM |
7196 | unsigned long r_symndx; |
7197 | asection *sym_sec; | |
7198 | struct elf_link_hash_entry *h; | |
7199 | Elf_Internal_Sym *sym; | |
51aecdc5 | 7200 | bfd_vma offset; |
1e2f5b6e | 7201 | |
51aecdc5 | 7202 | /* .opd contains an array of 16 or 24 byte entries. We're |
1e2f5b6e AM |
7203 | only interested in the reloc pointing to a function entry |
7204 | point. */ | |
51aecdc5 AM |
7205 | offset = rel->r_offset; |
7206 | if (rel + 1 == relend | |
7207 | || rel[1].r_offset != offset + 8) | |
1e2f5b6e AM |
7208 | { |
7209 | /* If someone messes with .opd alignment then after a | |
7210 | "ld -r" we might have padding in the middle of .opd. | |
7211 | Also, there's nothing to prevent someone putting | |
7212 | something silly in .opd with the assembler. No .opd | |
b34976b6 | 7213 | optimization for them! */ |
3f764659 | 7214 | broken_opd: |
4eca0228 | 7215 | _bfd_error_handler |
871b3ab2 | 7216 | (_("%pB: .opd is not a regular array of opd entries"), ibfd); |
51aecdc5 | 7217 | broken = TRUE; |
1e2f5b6e AM |
7218 | break; |
7219 | } | |
7220 | ||
50bc7936 AM |
7221 | if ((r_type = ELF64_R_TYPE (rel->r_info)) != R_PPC64_ADDR64 |
7222 | || (r_type = ELF64_R_TYPE ((rel + 1)->r_info)) != R_PPC64_TOC) | |
7223 | { | |
4eca0228 | 7224 | _bfd_error_handler |
695344c0 | 7225 | /* xgettext:c-format */ |
871b3ab2 | 7226 | (_("%pB: unexpected reloc type %u in .opd section"), |
d003868e | 7227 | ibfd, r_type); |
51aecdc5 | 7228 | broken = TRUE; |
50bc7936 AM |
7229 | break; |
7230 | } | |
7231 | ||
1e2f5b6e | 7232 | r_symndx = ELF64_R_SYM (rel->r_info); |
411e1bfb AM |
7233 | if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, |
7234 | r_symndx, ibfd)) | |
50bc7936 | 7235 | goto error_ret; |
1e2f5b6e AM |
7236 | |
7237 | if (sym_sec == NULL || sym_sec->owner == NULL) | |
7238 | { | |
411e1bfb AM |
7239 | const char *sym_name; |
7240 | if (h != NULL) | |
7241 | sym_name = h->root.root.string; | |
7242 | else | |
26c61ae5 L |
7243 | sym_name = bfd_elf_sym_name (ibfd, symtab_hdr, sym, |
7244 | sym_sec); | |
411e1bfb | 7245 | |
4eca0228 | 7246 | _bfd_error_handler |
695344c0 | 7247 | /* xgettext:c-format */ |
871b3ab2 | 7248 | (_("%pB: undefined sym `%s' in .opd section"), |
d003868e | 7249 | ibfd, sym_name); |
51aecdc5 | 7250 | broken = TRUE; |
1e2f5b6e AM |
7251 | break; |
7252 | } | |
7253 | ||
51020317 AM |
7254 | /* opd entries are always for functions defined in the |
7255 | current input bfd. If the symbol isn't defined in the | |
7256 | input bfd, then we won't be using the function in this | |
7257 | bfd; It must be defined in a linkonce section in another | |
7258 | bfd, or is weak. It's also possible that we are | |
7259 | discarding the function due to a linker script /DISCARD/, | |
7260 | which we test for via the output_section. */ | |
7261 | if (sym_sec->owner != ibfd | |
7262 | || sym_sec->output_section == bfd_abs_section_ptr) | |
b34976b6 | 7263 | need_edit = TRUE; |
1e2f5b6e | 7264 | |
50bc7936 | 7265 | rel += 2; |
51aecdc5 AM |
7266 | if (rel + 1 == relend |
7267 | || (rel + 2 < relend | |
7268 | && ELF64_R_TYPE (rel[2].r_info) == R_PPC64_TOC)) | |
7269 | ++rel; | |
7270 | ||
7271 | if (rel == relend) | |
3f764659 JJ |
7272 | { |
7273 | if (sec->size == offset + 24) | |
7274 | { | |
7275 | need_pad = NULL; | |
7276 | break; | |
7277 | } | |
51aecdc5 | 7278 | if (sec->size == offset + 16) |
3f764659 JJ |
7279 | { |
7280 | cnt_16b++; | |
7281 | break; | |
7282 | } | |
7283 | goto broken_opd; | |
7284 | } | |
3f764659 JJ |
7285 | else if (rel + 1 < relend |
7286 | && ELF64_R_TYPE (rel[0].r_info) == R_PPC64_ADDR64 | |
7287 | && ELF64_R_TYPE (rel[1].r_info) == R_PPC64_TOC) | |
7288 | { | |
51aecdc5 AM |
7289 | if (rel[0].r_offset == offset + 16) |
7290 | cnt_16b++; | |
7291 | else if (rel[0].r_offset != offset + 24) | |
7292 | goto broken_opd; | |
3f764659 JJ |
7293 | } |
7294 | else | |
7295 | goto broken_opd; | |
1e2f5b6e AM |
7296 | } |
7297 | ||
e7d1c40c | 7298 | add_aux_fields = htab->params->non_overlapping_opd && cnt_16b > 0; |
3f764659 | 7299 | |
51aecdc5 | 7300 | if (!broken && (need_edit || add_aux_fields)) |
1e2f5b6e AM |
7301 | { |
7302 | Elf_Internal_Rela *write_rel; | |
d4730f92 | 7303 | Elf_Internal_Shdr *rel_hdr; |
1e2f5b6e | 7304 | bfd_byte *rptr, *wptr; |
983bddc8 | 7305 | bfd_byte *new_contents; |
74f0fb50 AM |
7306 | bfd_size_type amt; |
7307 | ||
983bddc8 | 7308 | new_contents = NULL; |
51aecdc5 | 7309 | amt = OPD_NDX (sec->size) * sizeof (long); |
74f0fb50 | 7310 | opd = &ppc64_elf_section_data (sec)->u.opd; |
33c0ec9d | 7311 | opd->adjust = bfd_zalloc (sec->owner, amt); |
74f0fb50 AM |
7312 | if (opd->adjust == NULL) |
7313 | return FALSE; | |
1e2f5b6e AM |
7314 | |
7315 | /* This seems a waste of time as input .opd sections are all | |
7316 | zeros as generated by gcc, but I suppose there's no reason | |
7317 | this will always be so. We might start putting something in | |
7318 | the third word of .opd entries. */ | |
7319 | if ((sec->flags & SEC_IN_MEMORY) == 0) | |
7320 | { | |
eea6121a AM |
7321 | bfd_byte *loc; |
7322 | if (!bfd_malloc_and_get_section (ibfd, sec, &loc)) | |
6cdc0ccc | 7323 | { |
c9594989 | 7324 | free (loc); |
50bc7936 | 7325 | error_ret: |
c9594989 | 7326 | if (symtab_hdr->contents != (unsigned char *) local_syms) |
6cdc0ccc | 7327 | free (local_syms); |
6cdc0ccc AM |
7328 | if (elf_section_data (sec)->relocs != relstart) |
7329 | free (relstart); | |
b34976b6 | 7330 | return FALSE; |
6cdc0ccc | 7331 | } |
1e2f5b6e AM |
7332 | sec->contents = loc; |
7333 | sec->flags |= (SEC_IN_MEMORY | SEC_HAS_CONTENTS); | |
7334 | } | |
7335 | ||
7336 | elf_section_data (sec)->relocs = relstart; | |
7337 | ||
3f764659 | 7338 | new_contents = sec->contents; |
3f764659 JJ |
7339 | if (add_aux_fields) |
7340 | { | |
7341 | new_contents = bfd_malloc (sec->size + cnt_16b * 8); | |
7342 | if (new_contents == NULL) | |
7343 | return FALSE; | |
51aecdc5 | 7344 | need_pad = NULL; |
3f764659 | 7345 | } |
b4f4e59f AM |
7346 | wptr = new_contents; |
7347 | rptr = sec->contents; | |
1e2f5b6e | 7348 | write_rel = relstart; |
51aecdc5 | 7349 | for (rel = relstart; rel < relend; ) |
1e2f5b6e | 7350 | { |
50bc7936 AM |
7351 | unsigned long r_symndx; |
7352 | asection *sym_sec; | |
7353 | struct elf_link_hash_entry *h; | |
51aecdc5 | 7354 | struct ppc_link_hash_entry *fdh = NULL; |
50bc7936 | 7355 | Elf_Internal_Sym *sym; |
51aecdc5 AM |
7356 | long opd_ent_size; |
7357 | Elf_Internal_Rela *next_rel; | |
7358 | bfd_boolean skip; | |
50bc7936 AM |
7359 | |
7360 | r_symndx = ELF64_R_SYM (rel->r_info); | |
7361 | if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, | |
d37c89e5 | 7362 | r_symndx, ibfd)) |
50bc7936 AM |
7363 | goto error_ret; |
7364 | ||
51aecdc5 AM |
7365 | next_rel = rel + 2; |
7366 | if (next_rel + 1 == relend | |
7367 | || (next_rel + 2 < relend | |
7368 | && ELF64_R_TYPE (next_rel[2].r_info) == R_PPC64_TOC)) | |
7369 | ++next_rel; | |
7370 | ||
7371 | /* See if the .opd entry is full 24 byte or | |
7372 | 16 byte (with fd_aux entry overlapped with next | |
7373 | fd_func). */ | |
7374 | opd_ent_size = 24; | |
7375 | if (next_rel == relend) | |
1e2f5b6e | 7376 | { |
51aecdc5 | 7377 | if (sec->size == rel->r_offset + 16) |
3f764659 | 7378 | opd_ent_size = 16; |
51aecdc5 AM |
7379 | } |
7380 | else if (next_rel->r_offset == rel->r_offset + 16) | |
7381 | opd_ent_size = 16; | |
3f764659 | 7382 | |
51aecdc5 AM |
7383 | if (h != NULL |
7384 | && h->root.root.string[0] == '.') | |
7385 | { | |
ed7007c1 | 7386 | fdh = ppc_elf_hash_entry (h)->oh; |
8c5b4e52 AM |
7387 | if (fdh != NULL) |
7388 | { | |
7389 | fdh = ppc_follow_link (fdh); | |
7390 | if (fdh->elf.root.type != bfd_link_hash_defined | |
7391 | && fdh->elf.root.type != bfd_link_hash_defweak) | |
7392 | fdh = NULL; | |
7393 | } | |
51aecdc5 | 7394 | } |
1e2f5b6e | 7395 | |
51aecdc5 AM |
7396 | skip = (sym_sec->owner != ibfd |
7397 | || sym_sec->output_section == bfd_abs_section_ptr); | |
7398 | if (skip) | |
7399 | { | |
7400 | if (fdh != NULL && sym_sec->owner == ibfd) | |
a4aa0fb7 | 7401 | { |
51aecdc5 AM |
7402 | /* Arrange for the function descriptor sym |
7403 | to be dropped. */ | |
7404 | fdh->elf.root.u.def.value = 0; | |
7405 | fdh->elf.root.u.def.section = sym_sec; | |
a4aa0fb7 | 7406 | } |
51aecdc5 | 7407 | opd->adjust[OPD_NDX (rel->r_offset)] = -1; |
1e2f5b6e | 7408 | |
0e1862bb | 7409 | if (NO_OPD_RELOCS || bfd_link_relocatable (info)) |
51aecdc5 AM |
7410 | rel = next_rel; |
7411 | else | |
7412 | while (1) | |
7413 | { | |
7414 | if (!dec_dynrel_count (rel->r_info, sec, info, | |
7415 | NULL, h, sym)) | |
7416 | goto error_ret; | |
754021d0 | 7417 | |
51aecdc5 AM |
7418 | if (++rel == next_rel) |
7419 | break; | |
1e2f5b6e | 7420 | |
51aecdc5 AM |
7421 | r_symndx = ELF64_R_SYM (rel->r_info); |
7422 | if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, | |
7423 | r_symndx, ibfd)) | |
7424 | goto error_ret; | |
7425 | } | |
50bc7936 AM |
7426 | } |
7427 | else | |
1e2f5b6e | 7428 | { |
51aecdc5 AM |
7429 | /* We'll be keeping this opd entry. */ |
7430 | long adjust; | |
7431 | ||
7432 | if (fdh != NULL) | |
7433 | { | |
7434 | /* Redefine the function descriptor symbol to | |
7435 | this location in the opd section. It is | |
7436 | necessary to update the value here rather | |
7437 | than using an array of adjustments as we do | |
7438 | for local symbols, because various places | |
7439 | in the generic ELF code use the value | |
7440 | stored in u.def.value. */ | |
7441 | fdh->elf.root.u.def.value = wptr - new_contents; | |
7442 | fdh->adjust_done = 1; | |
7443 | } | |
7444 | ||
7445 | /* Local syms are a bit tricky. We could | |
7446 | tweak them as they can be cached, but | |
7447 | we'd need to look through the local syms | |
7448 | for the function descriptor sym which we | |
7449 | don't have at the moment. So keep an | |
7450 | array of adjustments. */ | |
7451 | adjust = (wptr - new_contents) - (rptr - sec->contents); | |
7452 | opd->adjust[OPD_NDX (rel->r_offset)] = adjust; | |
7453 | ||
7454 | if (wptr != rptr) | |
7455 | memcpy (wptr, rptr, opd_ent_size); | |
7456 | wptr += opd_ent_size; | |
7457 | if (add_aux_fields && opd_ent_size == 16) | |
7458 | { | |
7459 | memset (wptr, '\0', 8); | |
7460 | wptr += 8; | |
7461 | } | |
7462 | ||
50bc7936 | 7463 | /* We need to adjust any reloc offsets to point to the |
51aecdc5 AM |
7464 | new opd entries. */ |
7465 | for ( ; rel != next_rel; ++rel) | |
7466 | { | |
7467 | rel->r_offset += adjust; | |
7468 | if (write_rel != rel) | |
7469 | memcpy (write_rel, rel, sizeof (*rel)); | |
7470 | ++write_rel; | |
7471 | } | |
1e2f5b6e | 7472 | } |
51aecdc5 AM |
7473 | |
7474 | rptr += opd_ent_size; | |
1e2f5b6e AM |
7475 | } |
7476 | ||
3f764659 | 7477 | sec->size = wptr - new_contents; |
1e2f5b6e | 7478 | sec->reloc_count = write_rel - relstart; |
3f764659 JJ |
7479 | if (add_aux_fields) |
7480 | { | |
7481 | free (sec->contents); | |
7482 | sec->contents = new_contents; | |
7483 | } | |
7484 | ||
05bf9422 | 7485 | /* Fudge the header size too, as this is used later in |
cdcf6e38 | 7486 | elf_bfd_final_link if we are emitting relocs. */ |
d4730f92 BS |
7487 | rel_hdr = _bfd_elf_single_rel_hdr (sec); |
7488 | rel_hdr->sh_size = sec->reloc_count * rel_hdr->sh_entsize; | |
754021d0 | 7489 | some_edited = TRUE; |
1e2f5b6e | 7490 | } |
6cdc0ccc | 7491 | else if (elf_section_data (sec)->relocs != relstart) |
1e2f5b6e | 7492 | free (relstart); |
6cdc0ccc | 7493 | |
411e1bfb AM |
7494 | if (local_syms != NULL |
7495 | && symtab_hdr->contents != (unsigned char *) local_syms) | |
7496 | { | |
7497 | if (!info->keep_memory) | |
7498 | free (local_syms); | |
7499 | else | |
7500 | symtab_hdr->contents = (unsigned char *) local_syms; | |
7501 | } | |
7502 | } | |
7503 | ||
754021d0 AM |
7504 | if (some_edited) |
7505 | elf_link_hash_traverse (elf_hash_table (info), adjust_opd_syms, NULL); | |
7506 | ||
3f764659 JJ |
7507 | /* If we are doing a final link and the last .opd entry is just 16 byte |
7508 | long, add a 8 byte padding after it. */ | |
0e1862bb | 7509 | if (need_pad != NULL && !bfd_link_relocatable (info)) |
3f764659 JJ |
7510 | { |
7511 | bfd_byte *p; | |
7512 | ||
7513 | if ((need_pad->flags & SEC_IN_MEMORY) == 0) | |
7514 | { | |
7515 | BFD_ASSERT (need_pad->size > 0); | |
7516 | ||
7517 | p = bfd_malloc (need_pad->size + 8); | |
7518 | if (p == NULL) | |
7519 | return FALSE; | |
699733f6 | 7520 | |
2cdcc330 AM |
7521 | if (!bfd_get_section_contents (need_pad->owner, need_pad, |
7522 | p, 0, need_pad->size)) | |
3f764659 JJ |
7523 | return FALSE; |
7524 | ||
7525 | need_pad->contents = p; | |
7526 | need_pad->flags |= (SEC_IN_MEMORY | SEC_HAS_CONTENTS); | |
7527 | } | |
7528 | else | |
7529 | { | |
7530 | p = bfd_realloc (need_pad->contents, need_pad->size + 8); | |
7531 | if (p == NULL) | |
7532 | return FALSE; | |
7533 | ||
7534 | need_pad->contents = p; | |
7535 | } | |
7536 | ||
7537 | memset (need_pad->contents + need_pad->size, 0, 8); | |
7538 | need_pad->size += 8; | |
7539 | } | |
7540 | ||
411e1bfb AM |
7541 | return TRUE; |
7542 | } | |
7543 | ||
3e04d765 AM |
7544 | /* Analyze inline PLT call relocations to see whether calls to locally |
7545 | defined functions can be converted to direct calls. */ | |
7546 | ||
7547 | bfd_boolean | |
7548 | ppc64_elf_inline_plt (struct bfd_link_info *info) | |
7549 | { | |
7550 | struct ppc_link_hash_table *htab; | |
7551 | bfd *ibfd; | |
7552 | asection *sec; | |
7553 | bfd_vma low_vma, high_vma, limit; | |
7554 | ||
7555 | htab = ppc_hash_table (info); | |
7556 | if (htab == NULL) | |
7557 | return FALSE; | |
7558 | ||
7559 | /* A bl insn can reach -0x2000000 to 0x1fffffc. The limit is | |
7560 | reduced somewhat to cater for possible stubs that might be added | |
7561 | between the call and its destination. */ | |
7562 | if (htab->params->group_size < 0) | |
7563 | { | |
7564 | limit = -htab->params->group_size; | |
7565 | if (limit == 1) | |
7566 | limit = 0x1e00000; | |
7567 | } | |
7568 | else | |
7569 | { | |
7570 | limit = htab->params->group_size; | |
7571 | if (limit == 1) | |
7572 | limit = 0x1c00000; | |
7573 | } | |
7574 | ||
7575 | low_vma = -1; | |
7576 | high_vma = 0; | |
7577 | for (sec = info->output_bfd->sections; sec != NULL; sec = sec->next) | |
7578 | if ((sec->flags & (SEC_ALLOC | SEC_CODE)) == (SEC_ALLOC | SEC_CODE)) | |
7579 | { | |
7580 | if (low_vma > sec->vma) | |
7581 | low_vma = sec->vma; | |
7582 | if (high_vma < sec->vma + sec->size) | |
7583 | high_vma = sec->vma + sec->size; | |
7584 | } | |
7585 | ||
7586 | /* If a "bl" can reach anywhere in local code sections, then we can | |
7587 | convert all inline PLT sequences to direct calls when the symbol | |
7588 | is local. */ | |
7589 | if (high_vma - low_vma < limit) | |
7590 | { | |
7591 | htab->can_convert_all_inline_plt = 1; | |
7592 | return TRUE; | |
7593 | } | |
7594 | ||
7595 | /* Otherwise, go looking through relocs for cases where a direct | |
7596 | call won't reach. Mark the symbol on any such reloc to disable | |
7597 | the optimization and keep the PLT entry as it seems likely that | |
7598 | this will be better than creating trampolines. Note that this | |
7599 | will disable the optimization for all inline PLT calls to a | |
7600 | particular symbol, not just those that won't reach. The | |
7601 | difficulty in doing a more precise optimization is that the | |
7602 | linker needs to make a decision depending on whether a | |
7603 | particular R_PPC64_PLTCALL insn can be turned into a direct | |
7604 | call, for each of the R_PPC64_PLTSEQ and R_PPC64_PLT16* insns in | |
7605 | the sequence, and there is nothing that ties those relocs | |
7606 | together except their symbol. */ | |
7607 | ||
7608 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next) | |
7609 | { | |
7610 | Elf_Internal_Shdr *symtab_hdr; | |
7611 | Elf_Internal_Sym *local_syms; | |
7612 | ||
7613 | if (!is_ppc64_elf (ibfd)) | |
7614 | continue; | |
7615 | ||
7616 | local_syms = NULL; | |
7617 | symtab_hdr = &elf_symtab_hdr (ibfd); | |
7618 | ||
7619 | for (sec = ibfd->sections; sec != NULL; sec = sec->next) | |
7620 | if (ppc64_elf_section_data (sec)->has_pltcall | |
7621 | && !bfd_is_abs_section (sec->output_section)) | |
7622 | { | |
7623 | Elf_Internal_Rela *relstart, *rel, *relend; | |
7624 | ||
7625 | /* Read the relocations. */ | |
7626 | relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL, | |
7627 | info->keep_memory); | |
7628 | if (relstart == NULL) | |
7629 | return FALSE; | |
7630 | ||
7631 | relend = relstart + sec->reloc_count; | |
435edf0b | 7632 | for (rel = relstart; rel < relend; rel++) |
3e04d765 AM |
7633 | { |
7634 | enum elf_ppc64_reloc_type r_type; | |
7635 | unsigned long r_symndx; | |
7636 | asection *sym_sec; | |
7637 | struct elf_link_hash_entry *h; | |
7638 | Elf_Internal_Sym *sym; | |
7639 | unsigned char *tls_maskp; | |
7640 | ||
7641 | r_type = ELF64_R_TYPE (rel->r_info); | |
5663e321 AM |
7642 | if (r_type != R_PPC64_PLTCALL |
7643 | && r_type != R_PPC64_PLTCALL_NOTOC) | |
3e04d765 AM |
7644 | continue; |
7645 | ||
7646 | r_symndx = ELF64_R_SYM (rel->r_info); | |
7647 | if (!get_sym_h (&h, &sym, &sym_sec, &tls_maskp, &local_syms, | |
7648 | r_symndx, ibfd)) | |
7649 | { | |
7650 | if (elf_section_data (sec)->relocs != relstart) | |
7651 | free (relstart); | |
c9594989 | 7652 | if (symtab_hdr->contents != (bfd_byte *) local_syms) |
3e04d765 AM |
7653 | free (local_syms); |
7654 | return FALSE; | |
7655 | } | |
7656 | ||
7657 | if (sym_sec != NULL && sym_sec->output_section != NULL) | |
7658 | { | |
7659 | bfd_vma from, to; | |
7660 | if (h != NULL) | |
7661 | to = h->root.u.def.value; | |
7662 | else | |
7663 | to = sym->st_value; | |
7664 | to += (rel->r_addend | |
7665 | + sym_sec->output_offset | |
7666 | + sym_sec->output_section->vma); | |
7667 | from = (rel->r_offset | |
7668 | + sec->output_offset | |
7669 | + sec->output_section->vma); | |
5663e321 AM |
7670 | if (to - from + limit < 2 * limit |
7671 | && !(r_type == R_PPC64_PLTCALL_NOTOC | |
7672 | && (((h ? h->other : sym->st_other) | |
7673 | & STO_PPC64_LOCAL_MASK) | |
4a4e7361 | 7674 | > 1 << STO_PPC64_LOCAL_BIT))) |
3e04d765 AM |
7675 | *tls_maskp &= ~PLT_KEEP; |
7676 | } | |
7677 | } | |
7678 | if (elf_section_data (sec)->relocs != relstart) | |
7679 | free (relstart); | |
7680 | } | |
7681 | ||
7682 | if (local_syms != NULL | |
7683 | && symtab_hdr->contents != (unsigned char *) local_syms) | |
7684 | { | |
7685 | if (!info->keep_memory) | |
7686 | free (local_syms); | |
7687 | else | |
7688 | symtab_hdr->contents = (unsigned char *) local_syms; | |
7689 | } | |
7690 | } | |
7691 | ||
7692 | return TRUE; | |
7693 | } | |
7694 | ||
e1918d23 | 7695 | /* Set htab->tls_get_addr and call the generic ELF tls_setup function. */ |
411e1bfb | 7696 | |
e1918d23 | 7697 | asection * |
e7d1c40c | 7698 | ppc64_elf_tls_setup (struct bfd_link_info *info) |
411e1bfb | 7699 | { |
411e1bfb | 7700 | struct ppc_link_hash_table *htab; |
9e7028aa | 7701 | struct elf_link_hash_entry *tga, *tga_fd, *desc, *desc_fd; |
411e1bfb | 7702 | |
411e1bfb | 7703 | htab = ppc_hash_table (info); |
4dfe6ac6 NC |
7704 | if (htab == NULL) |
7705 | return NULL; | |
7706 | ||
ee67d69a AM |
7707 | if (abiversion (info->output_bfd) == 1) |
7708 | htab->opd_abi = 1; | |
7709 | ||
e7d1c40c | 7710 | if (htab->params->no_multi_toc) |
33c0ec9d AM |
7711 | htab->do_multi_toc = 0; |
7712 | else if (!htab->do_multi_toc) | |
e7d1c40c | 7713 | htab->params->no_multi_toc = 1; |
33c0ec9d | 7714 | |
8b5f1ed8 AM |
7715 | /* Default to --no-plt-localentry, as this option can cause problems |
7716 | with symbol interposition. For example, glibc libpthread.so and | |
7717 | libc.so duplicate many pthread symbols, with a fallback | |
7718 | implementation in libc.so. In some cases the fallback does more | |
7719 | work than the pthread implementation. __pthread_condattr_destroy | |
7720 | is one such symbol: the libpthread.so implementation is | |
7721 | localentry:0 while the libc.so implementation is localentry:8. | |
7722 | An app that "cleverly" uses dlopen to only load necessary | |
7723 | libraries at runtime may omit loading libpthread.so when not | |
7724 | running multi-threaded, which then results in the libc.so | |
7725 | fallback symbols being used and ld.so complaining. Now there | |
7726 | are workarounds in ld (see non_zero_localentry) to detect the | |
7727 | pthread situation, but that may not be the only case where | |
7728 | --plt-localentry can cause trouble. */ | |
f378ab09 | 7729 | if (htab->params->plt_localentry0 < 0) |
8b5f1ed8 | 7730 | htab->params->plt_localentry0 = 0; |
d44c746a AM |
7731 | if (htab->params->plt_localentry0 |
7732 | && elf_link_hash_lookup (&htab->elf, "GLIBC_2.26", | |
7733 | FALSE, FALSE, FALSE) == NULL) | |
cf97bcb0 AM |
7734 | _bfd_error_handler |
7735 | (_("warning: --plt-localentry is especially dangerous without " | |
7736 | "ld.so support to detect ABI violations")); | |
f378ab09 | 7737 | |
9e7028aa AM |
7738 | tga = elf_link_hash_lookup (&htab->elf, ".__tls_get_addr", |
7739 | FALSE, FALSE, TRUE); | |
7740 | htab->tls_get_addr = ppc_elf_hash_entry (tga); | |
7741 | ||
a7f2871e | 7742 | /* Move dynamic linking info to the function descriptor sym. */ |
9e7028aa AM |
7743 | if (tga != NULL) |
7744 | func_desc_adjust (tga, info); | |
7745 | tga_fd = elf_link_hash_lookup (&htab->elf, "__tls_get_addr", | |
7746 | FALSE, FALSE, TRUE); | |
7747 | htab->tls_get_addr_fd = ppc_elf_hash_entry (tga_fd); | |
7748 | ||
7749 | desc = elf_link_hash_lookup (&htab->elf, ".__tls_get_addr_desc", | |
7750 | FALSE, FALSE, TRUE); | |
7751 | htab->tga_desc = ppc_elf_hash_entry (desc); | |
7752 | if (desc != NULL) | |
7753 | func_desc_adjust (desc, info); | |
7754 | desc_fd = elf_link_hash_lookup (&htab->elf, "__tls_get_addr_desc", | |
7755 | FALSE, FALSE, TRUE); | |
7756 | htab->tga_desc_fd = ppc_elf_hash_entry (desc_fd); | |
7757 | ||
7c9cf415 | 7758 | if (htab->params->tls_get_addr_opt) |
a7f2871e | 7759 | { |
9e7028aa | 7760 | struct elf_link_hash_entry *opt, *opt_fd; |
a7f2871e AM |
7761 | |
7762 | opt = elf_link_hash_lookup (&htab->elf, ".__tls_get_addr_opt", | |
7763 | FALSE, FALSE, TRUE); | |
7764 | if (opt != NULL) | |
7765 | func_desc_adjust (opt, info); | |
7766 | opt_fd = elf_link_hash_lookup (&htab->elf, "__tls_get_addr_opt", | |
7767 | FALSE, FALSE, TRUE); | |
7768 | if (opt_fd != NULL | |
7769 | && (opt_fd->root.type == bfd_link_hash_defined | |
7770 | || opt_fd->root.type == bfd_link_hash_defweak)) | |
7771 | { | |
7772 | /* If glibc supports an optimized __tls_get_addr call stub, | |
7773 | signalled by the presence of __tls_get_addr_opt, and we'll | |
7774 | be calling __tls_get_addr via a plt call stub, then | |
7775 | make __tls_get_addr point to __tls_get_addr_opt. */ | |
9e7028aa AM |
7776 | if (!(htab->elf.dynamic_sections_created |
7777 | && tga_fd != NULL | |
7778 | && (tga_fd->type == STT_FUNC | |
7779 | || tga_fd->needs_plt) | |
7780 | && !(SYMBOL_CALLS_LOCAL (info, tga_fd) | |
7781 | || UNDEFWEAK_NO_DYNAMIC_RELOC (info, tga_fd)))) | |
7782 | tga_fd = NULL; | |
7783 | if (!(htab->elf.dynamic_sections_created | |
7784 | && desc_fd != NULL | |
7785 | && (desc_fd->type == STT_FUNC | |
7786 | || desc_fd->needs_plt) | |
7787 | && !(SYMBOL_CALLS_LOCAL (info, desc_fd) | |
7788 | || UNDEFWEAK_NO_DYNAMIC_RELOC (info, desc_fd)))) | |
7789 | desc_fd = NULL; | |
7790 | ||
7791 | if (tga_fd != NULL || desc_fd != NULL) | |
7792 | { | |
7793 | struct plt_entry *ent = NULL; | |
7794 | ||
7795 | if (tga_fd != NULL) | |
7796 | for (ent = tga_fd->plt.plist; ent != NULL; ent = ent->next) | |
7797 | if (ent->plt.refcount > 0) | |
7798 | break; | |
7799 | if (ent == NULL && desc_fd != NULL) | |
7800 | for (ent = desc_fd->plt.plist; ent != NULL; ent = ent->next) | |
7801 | if (ent->plt.refcount > 0) | |
7802 | break; | |
a7f2871e AM |
7803 | if (ent != NULL) |
7804 | { | |
9e7028aa AM |
7805 | if (tga_fd != NULL) |
7806 | { | |
7807 | tga_fd->root.type = bfd_link_hash_indirect; | |
7808 | tga_fd->root.u.i.link = &opt_fd->root; | |
7809 | tga_fd->root.u.i.warning = NULL; | |
7810 | ppc64_elf_copy_indirect_symbol (info, opt_fd, tga_fd); | |
7811 | } | |
7812 | if (desc_fd != NULL) | |
7813 | { | |
7814 | desc_fd->root.type = bfd_link_hash_indirect; | |
7815 | desc_fd->root.u.i.link = &opt_fd->root; | |
7816 | desc_fd->root.u.i.warning = NULL; | |
7817 | ppc64_elf_copy_indirect_symbol (info, opt_fd, desc_fd); | |
7818 | } | |
b531344c | 7819 | opt_fd->mark = 1; |
a7f2871e AM |
7820 | if (opt_fd->dynindx != -1) |
7821 | { | |
7822 | /* Use __tls_get_addr_opt in dynamic relocations. */ | |
7823 | opt_fd->dynindx = -1; | |
7824 | _bfd_elf_strtab_delref (elf_hash_table (info)->dynstr, | |
7825 | opt_fd->dynstr_index); | |
7826 | if (!bfd_elf_link_record_dynamic_symbol (info, opt_fd)) | |
854b41e7 | 7827 | return NULL; |
a7f2871e | 7828 | } |
9e7028aa | 7829 | if (tga_fd != NULL) |
a7f2871e | 7830 | { |
9e7028aa AM |
7831 | htab->tls_get_addr_fd = ppc_elf_hash_entry (opt_fd); |
7832 | tga = &htab->tls_get_addr->elf; | |
7833 | if (opt != NULL && tga != NULL) | |
7834 | { | |
7835 | tga->root.type = bfd_link_hash_indirect; | |
7836 | tga->root.u.i.link = &opt->root; | |
7837 | tga->root.u.i.warning = NULL; | |
7838 | ppc64_elf_copy_indirect_symbol (info, opt, tga); | |
7839 | opt->mark = 1; | |
7840 | _bfd_elf_link_hash_hide_symbol (info, opt, | |
7841 | tga->forced_local); | |
7842 | htab->tls_get_addr = ppc_elf_hash_entry (opt); | |
7843 | } | |
7844 | htab->tls_get_addr_fd->oh = htab->tls_get_addr; | |
7845 | htab->tls_get_addr_fd->is_func_descriptor = 1; | |
7846 | if (htab->tls_get_addr != NULL) | |
7847 | { | |
7848 | htab->tls_get_addr->oh = htab->tls_get_addr_fd; | |
7849 | htab->tls_get_addr->is_func = 1; | |
7850 | } | |
a7f2871e | 7851 | } |
9e7028aa | 7852 | if (desc_fd != NULL) |
a7f2871e | 7853 | { |
9e7028aa AM |
7854 | htab->tga_desc_fd = ppc_elf_hash_entry (opt_fd); |
7855 | if (opt != NULL && desc != NULL) | |
7856 | { | |
7857 | desc->root.type = bfd_link_hash_indirect; | |
7858 | desc->root.u.i.link = &opt->root; | |
7859 | desc->root.u.i.warning = NULL; | |
7860 | ppc64_elf_copy_indirect_symbol (info, opt, desc); | |
7861 | opt->mark = 1; | |
7862 | _bfd_elf_link_hash_hide_symbol (info, opt, | |
7863 | desc->forced_local); | |
7864 | htab->tga_desc = ppc_elf_hash_entry (opt); | |
7865 | } | |
7866 | htab->tga_desc_fd->oh = htab->tga_desc; | |
7867 | htab->tga_desc_fd->is_func_descriptor = 1; | |
7868 | if (htab->tga_desc != NULL) | |
7869 | { | |
7870 | htab->tga_desc->oh = htab->tga_desc_fd; | |
7871 | htab->tga_desc->is_func = 1; | |
7872 | } | |
a7f2871e AM |
7873 | } |
7874 | } | |
7875 | } | |
7876 | } | |
7c9cf415 AM |
7877 | else if (htab->params->tls_get_addr_opt < 0) |
7878 | htab->params->tls_get_addr_opt = 0; | |
a7f2871e | 7879 | } |
9e7028aa AM |
7880 | |
7881 | if (htab->tga_desc_fd != NULL | |
7882 | && htab->params->tls_get_addr_opt | |
7883 | && htab->params->no_tls_get_addr_regsave == -1) | |
7884 | htab->params->no_tls_get_addr_regsave = 0; | |
7885 | ||
33c0ec9d | 7886 | return _bfd_elf_tls_setup (info->output_bfd, info); |
3a71aa26 | 7887 | } |
8387904d | 7888 | |
3a71aa26 | 7889 | /* Return TRUE iff REL is a branch reloc with a global symbol matching |
9e7028aa | 7890 | any of HASH1, HASH2, HASH3, or HASH4. */ |
8387904d | 7891 | |
3a71aa26 AM |
7892 | static bfd_boolean |
7893 | branch_reloc_hash_match (const bfd *ibfd, | |
7894 | const Elf_Internal_Rela *rel, | |
7895 | const struct ppc_link_hash_entry *hash1, | |
9e7028aa AM |
7896 | const struct ppc_link_hash_entry *hash2, |
7897 | const struct ppc_link_hash_entry *hash3, | |
7898 | const struct ppc_link_hash_entry *hash4) | |
3a71aa26 AM |
7899 | { |
7900 | Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (ibfd); | |
7901 | enum elf_ppc64_reloc_type r_type = ELF64_R_TYPE (rel->r_info); | |
7902 | unsigned int r_symndx = ELF64_R_SYM (rel->r_info); | |
7903 | ||
e054468f | 7904 | if (r_symndx >= symtab_hdr->sh_info && is_branch_reloc (r_type)) |
8387904d | 7905 | { |
3a71aa26 AM |
7906 | struct elf_link_hash_entry **sym_hashes = elf_sym_hashes (ibfd); |
7907 | struct elf_link_hash_entry *h; | |
8387904d | 7908 | |
3a71aa26 | 7909 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; |
b31867b6 | 7910 | h = elf_follow_link (h); |
9e7028aa AM |
7911 | if (h == &hash1->elf || h == &hash2->elf |
7912 | || h == &hash3->elf || h == &hash4->elf) | |
3a71aa26 | 7913 | return TRUE; |
a48ebf4d | 7914 | } |
3a71aa26 | 7915 | return FALSE; |
951fd09b | 7916 | } |
411e1bfb | 7917 | |
951fd09b AM |
7918 | /* Run through all the TLS relocs looking for optimization |
7919 | opportunities. The linker has been hacked (see ppc64elf.em) to do | |
7920 | a preliminary section layout so that we know the TLS segment | |
7921 | offsets. We can't optimize earlier because some optimizations need | |
7922 | to know the tp offset, and we need to optimize before allocating | |
7923 | dynamic relocations. */ | |
7924 | ||
7925 | bfd_boolean | |
33c0ec9d | 7926 | ppc64_elf_tls_optimize (struct bfd_link_info *info) |
951fd09b AM |
7927 | { |
7928 | bfd *ibfd; | |
7929 | asection *sec; | |
7930 | struct ppc_link_hash_table *htab; | |
663a1470 | 7931 | unsigned char *toc_ref; |
102890f0 | 7932 | int pass; |
951fd09b | 7933 | |
3cbc1e5e | 7934 | if (!bfd_link_executable (info)) |
411e1bfb AM |
7935 | return TRUE; |
7936 | ||
951fd09b | 7937 | htab = ppc_hash_table (info); |
4dfe6ac6 NC |
7938 | if (htab == NULL) |
7939 | return FALSE; | |
7940 | ||
663a1470 AM |
7941 | /* Make two passes over the relocs. On the first pass, mark toc |
7942 | entries involved with tls relocs, and check that tls relocs | |
7943 | involved in setting up a tls_get_addr call are indeed followed by | |
7944 | such a call. If they are not, we can't do any tls optimization. | |
7945 | On the second pass twiddle tls_mask flags to notify | |
7946 | relocate_section that optimization can be done, and adjust got | |
7947 | and plt refcounts. */ | |
7948 | toc_ref = NULL; | |
7949 | for (pass = 0; pass < 2; ++pass) | |
c72f2fb2 | 7950 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next) |
663a1470 AM |
7951 | { |
7952 | Elf_Internal_Sym *locsyms = NULL; | |
7953 | asection *toc = bfd_get_section_by_name (ibfd, ".toc"); | |
7954 | ||
102890f0 AM |
7955 | for (sec = ibfd->sections; sec != NULL; sec = sec->next) |
7956 | if (sec->has_tls_reloc && !bfd_is_abs_section (sec->output_section)) | |
7957 | { | |
7958 | Elf_Internal_Rela *relstart, *rel, *relend; | |
663a1470 | 7959 | bfd_boolean found_tls_get_addr_arg = 0; |
411e1bfb | 7960 | |
102890f0 AM |
7961 | /* Read the relocations. */ |
7962 | relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL, | |
7963 | info->keep_memory); | |
7964 | if (relstart == NULL) | |
2915c55b JK |
7965 | { |
7966 | free (toc_ref); | |
7967 | return FALSE; | |
7968 | } | |
411e1bfb | 7969 | |
102890f0 AM |
7970 | relend = relstart + sec->reloc_count; |
7971 | for (rel = relstart; rel < relend; rel++) | |
7972 | { | |
7973 | enum elf_ppc64_reloc_type r_type; | |
7974 | unsigned long r_symndx; | |
7975 | struct elf_link_hash_entry *h; | |
7976 | Elf_Internal_Sym *sym; | |
7977 | asection *sym_sec; | |
f961d9dd | 7978 | unsigned char *tls_mask; |
46e9995a | 7979 | unsigned int tls_set, tls_clear, tls_type = 0; |
102890f0 AM |
7980 | bfd_vma value; |
7981 | bfd_boolean ok_tprel, is_local; | |
7982 | long toc_ref_index = 0; | |
7983 | int expecting_tls_get_addr = 0; | |
663a1470 | 7984 | bfd_boolean ret = FALSE; |
411e1bfb | 7985 | |
102890f0 AM |
7986 | r_symndx = ELF64_R_SYM (rel->r_info); |
7987 | if (!get_sym_h (&h, &sym, &sym_sec, &tls_mask, &locsyms, | |
7988 | r_symndx, ibfd)) | |
7989 | { | |
7990 | err_free_rel: | |
7991 | if (elf_section_data (sec)->relocs != relstart) | |
7992 | free (relstart); | |
c9594989 AM |
7993 | free (toc_ref); |
7994 | if (elf_symtab_hdr (ibfd).contents | |
7995 | != (unsigned char *) locsyms) | |
102890f0 | 7996 | free (locsyms); |
663a1470 | 7997 | return ret; |
102890f0 | 7998 | } |
411e1bfb | 7999 | |
102890f0 AM |
8000 | if (h != NULL) |
8001 | { | |
766bc656 AM |
8002 | if (h->root.type == bfd_link_hash_defined |
8003 | || h->root.type == bfd_link_hash_defweak) | |
8004 | value = h->root.u.def.value; | |
8005 | else if (h->root.type == bfd_link_hash_undefweak) | |
8006 | value = 0; | |
8007 | else | |
663a1470 AM |
8008 | { |
8009 | found_tls_get_addr_arg = 0; | |
8010 | continue; | |
8011 | } | |
102890f0 AM |
8012 | } |
8013 | else | |
8014 | /* Symbols referenced by TLS relocs must be of type | |
8015 | STT_TLS. So no need for .opd local sym adjust. */ | |
8016 | value = sym->st_value; | |
8017 | ||
8018 | ok_tprel = FALSE; | |
f749f26e AM |
8019 | is_local = SYMBOL_REFERENCES_LOCAL (info, h); |
8020 | if (is_local) | |
102890f0 | 8021 | { |
766bc656 AM |
8022 | if (h != NULL |
8023 | && h->root.type == bfd_link_hash_undefweak) | |
8024 | ok_tprel = TRUE; | |
c27b8c2a AM |
8025 | else if (sym_sec != NULL |
8026 | && sym_sec->output_section != NULL) | |
766bc656 AM |
8027 | { |
8028 | value += sym_sec->output_offset; | |
8029 | value += sym_sec->output_section->vma; | |
0b147428 | 8030 | value -= htab->elf.tls_sec->vma + TP_OFFSET; |
c213164a AM |
8031 | /* Note that even though the prefix insns |
8032 | allow a 1<<33 offset we use the same test | |
8033 | as for addis;addi. There may be a mix of | |
8034 | pcrel and non-pcrel code and the decision | |
8035 | to optimise is per symbol, not per TLS | |
8036 | sequence. */ | |
0b147428 | 8037 | ok_tprel = value + 0x80008000ULL < 1ULL << 32; |
766bc656 | 8038 | } |
102890f0 | 8039 | } |
951fd09b | 8040 | |
102890f0 | 8041 | r_type = ELF64_R_TYPE (rel->r_info); |
663a1470 AM |
8042 | /* If this section has old-style __tls_get_addr calls |
8043 | without marker relocs, then check that each | |
8044 | __tls_get_addr call reloc is preceded by a reloc | |
8045 | that conceivably belongs to the __tls_get_addr arg | |
8046 | setup insn. If we don't find matching arg setup | |
8047 | relocs, don't do any tls optimization. */ | |
8048 | if (pass == 0 | |
9737e8af | 8049 | && sec->nomark_tls_get_addr |
663a1470 | 8050 | && h != NULL |
ed7007c1 | 8051 | && is_tls_get_addr (h, htab) |
663a1470 AM |
8052 | && !found_tls_get_addr_arg |
8053 | && is_branch_reloc (r_type)) | |
8054 | { | |
25f53a85 | 8055 | info->callbacks->minfo (_("%H __tls_get_addr lost arg, " |
663a1470 AM |
8056 | "TLS optimization disabled\n"), |
8057 | ibfd, sec, rel->r_offset); | |
8058 | ret = TRUE; | |
8059 | goto err_free_rel; | |
8060 | } | |
8061 | ||
8062 | found_tls_get_addr_arg = 0; | |
102890f0 AM |
8063 | switch (r_type) |
8064 | { | |
8065 | case R_PPC64_GOT_TLSLD16: | |
8066 | case R_PPC64_GOT_TLSLD16_LO: | |
87c69f97 | 8067 | case R_PPC64_GOT_TLSLD_PCREL34: |
102890f0 | 8068 | expecting_tls_get_addr = 1; |
663a1470 | 8069 | found_tls_get_addr_arg = 1; |
1a0670f3 | 8070 | /* Fall through. */ |
102890f0 AM |
8071 | |
8072 | case R_PPC64_GOT_TLSLD16_HI: | |
8073 | case R_PPC64_GOT_TLSLD16_HA: | |
8074 | /* These relocs should never be against a symbol | |
8075 | defined in a shared lib. Leave them alone if | |
8076 | that turns out to be the case. */ | |
8077 | if (!is_local) | |
8078 | continue; | |
411e1bfb | 8079 | |
102890f0 | 8080 | /* LD -> LE */ |
411e1bfb | 8081 | tls_set = 0; |
102890f0 AM |
8082 | tls_clear = TLS_LD; |
8083 | tls_type = TLS_TLS | TLS_LD; | |
8084 | break; | |
411e1bfb | 8085 | |
102890f0 AM |
8086 | case R_PPC64_GOT_TLSGD16: |
8087 | case R_PPC64_GOT_TLSGD16_LO: | |
87c69f97 | 8088 | case R_PPC64_GOT_TLSGD_PCREL34: |
102890f0 | 8089 | expecting_tls_get_addr = 1; |
663a1470 | 8090 | found_tls_get_addr_arg = 1; |
1a0670f3 | 8091 | /* Fall through. */ |
102890f0 AM |
8092 | |
8093 | case R_PPC64_GOT_TLSGD16_HI: | |
8094 | case R_PPC64_GOT_TLSGD16_HA: | |
8095 | if (ok_tprel) | |
8096 | /* GD -> LE */ | |
411e1bfb | 8097 | tls_set = 0; |
102890f0 AM |
8098 | else |
8099 | /* GD -> IE */ | |
b00a0a86 | 8100 | tls_set = TLS_TLS | TLS_GDIE; |
102890f0 AM |
8101 | tls_clear = TLS_GD; |
8102 | tls_type = TLS_TLS | TLS_GD; | |
8103 | break; | |
8104 | ||
87c69f97 | 8105 | case R_PPC64_GOT_TPREL_PCREL34: |
102890f0 AM |
8106 | case R_PPC64_GOT_TPREL16_DS: |
8107 | case R_PPC64_GOT_TPREL16_LO_DS: | |
8108 | case R_PPC64_GOT_TPREL16_HI: | |
8109 | case R_PPC64_GOT_TPREL16_HA: | |
8110 | if (ok_tprel) | |
8111 | { | |
8112 | /* IE -> LE */ | |
8113 | tls_set = 0; | |
8114 | tls_clear = TLS_TPREL; | |
8115 | tls_type = TLS_TLS | TLS_TPREL; | |
8116 | break; | |
8117 | } | |
411e1bfb AM |
8118 | continue; |
8119 | ||
727fc41e | 8120 | case R_PPC64_TLSLD: |
7d04a20a AM |
8121 | if (!is_local) |
8122 | continue; | |
8123 | /* Fall through. */ | |
8124 | case R_PPC64_TLSGD: | |
23cedd1d AM |
8125 | if (rel + 1 < relend |
8126 | && is_plt_seq_reloc (ELF64_R_TYPE (rel[1].r_info))) | |
8127 | { | |
8128 | if (pass != 0 | |
2cdcc330 | 8129 | && (ELF64_R_TYPE (rel[1].r_info) |
5663e321 AM |
8130 | != R_PPC64_PLTSEQ) |
8131 | && (ELF64_R_TYPE (rel[1].r_info) | |
8132 | != R_PPC64_PLTSEQ_NOTOC)) | |
23cedd1d AM |
8133 | { |
8134 | r_symndx = ELF64_R_SYM (rel[1].r_info); | |
8135 | if (!get_sym_h (&h, NULL, NULL, NULL, &locsyms, | |
2cdcc330 | 8136 | r_symndx, ibfd)) |
23cedd1d AM |
8137 | goto err_free_rel; |
8138 | if (h != NULL) | |
8139 | { | |
8140 | struct plt_entry *ent = NULL; | |
8141 | ||
8142 | for (ent = h->plt.plist; | |
8143 | ent != NULL; | |
8144 | ent = ent->next) | |
8145 | if (ent->addend == rel[1].r_addend) | |
8146 | break; | |
8147 | ||
8148 | if (ent != NULL | |
8149 | && ent->plt.refcount > 0) | |
8150 | ent->plt.refcount -= 1; | |
8151 | } | |
8152 | } | |
8153 | continue; | |
8154 | } | |
663a1470 | 8155 | found_tls_get_addr_arg = 1; |
1a0670f3 | 8156 | /* Fall through. */ |
663a1470 AM |
8157 | |
8158 | case R_PPC64_TLS: | |
8159 | case R_PPC64_TOC16: | |
8160 | case R_PPC64_TOC16_LO: | |
102890f0 AM |
8161 | if (sym_sec == NULL || sym_sec != toc) |
8162 | continue; | |
8163 | ||
8164 | /* Mark this toc entry as referenced by a TLS | |
8165 | code sequence. We can do that now in the | |
8166 | case of R_PPC64_TLS, and after checking for | |
8167 | tls_get_addr for the TOC16 relocs. */ | |
8168 | if (toc_ref == NULL) | |
2cdcc330 AM |
8169 | toc_ref |
8170 | = bfd_zmalloc (toc->output_section->rawsize / 8); | |
663a1470 AM |
8171 | if (toc_ref == NULL) |
8172 | goto err_free_rel; | |
8173 | ||
102890f0 AM |
8174 | if (h != NULL) |
8175 | value = h->root.u.def.value; | |
8176 | else | |
8177 | value = sym->st_value; | |
8178 | value += rel->r_addend; | |
73242275 AM |
8179 | if (value % 8 != 0) |
8180 | continue; | |
8181 | BFD_ASSERT (value < toc->size | |
8182 | && toc->output_offset % 8 == 0); | |
663a1470 | 8183 | toc_ref_index = (value + toc->output_offset) / 8; |
727fc41e AM |
8184 | if (r_type == R_PPC64_TLS |
8185 | || r_type == R_PPC64_TLSGD | |
8186 | || r_type == R_PPC64_TLSLD) | |
102890f0 AM |
8187 | { |
8188 | toc_ref[toc_ref_index] = 1; | |
8189 | continue; | |
8190 | } | |
8191 | ||
8192 | if (pass != 0 && toc_ref[toc_ref_index] == 0) | |
8193 | continue; | |
8194 | ||
8195 | tls_set = 0; | |
8196 | tls_clear = 0; | |
8197 | expecting_tls_get_addr = 2; | |
8198 | break; | |
8199 | ||
8200 | case R_PPC64_TPREL64: | |
8201 | if (pass == 0 | |
8202 | || sec != toc | |
8203 | || toc_ref == NULL | |
663a1470 | 8204 | || !toc_ref[(rel->r_offset + toc->output_offset) / 8]) |
102890f0 AM |
8205 | continue; |
8206 | if (ok_tprel) | |
8207 | { | |
8208 | /* IE -> LE */ | |
8209 | tls_set = TLS_EXPLICIT; | |
8210 | tls_clear = TLS_TPREL; | |
8211 | break; | |
8212 | } | |
8213 | continue; | |
8214 | ||
8215 | case R_PPC64_DTPMOD64: | |
8216 | if (pass == 0 | |
8217 | || sec != toc | |
8218 | || toc_ref == NULL | |
663a1470 | 8219 | || !toc_ref[(rel->r_offset + toc->output_offset) / 8]) |
102890f0 AM |
8220 | continue; |
8221 | if (rel + 1 < relend | |
8222 | && (rel[1].r_info | |
8223 | == ELF64_R_INFO (r_symndx, R_PPC64_DTPREL64)) | |
8224 | && rel[1].r_offset == rel->r_offset + 8) | |
8225 | { | |
8226 | if (ok_tprel) | |
8227 | /* GD -> LE */ | |
8228 | tls_set = TLS_EXPLICIT | TLS_GD; | |
8229 | else | |
8230 | /* GD -> IE */ | |
b00a0a86 | 8231 | tls_set = TLS_EXPLICIT | TLS_GD | TLS_GDIE; |
102890f0 AM |
8232 | tls_clear = TLS_GD; |
8233 | } | |
8234 | else | |
8235 | { | |
8236 | if (!is_local) | |
8237 | continue; | |
8238 | ||
8239 | /* LD -> LE */ | |
8240 | tls_set = TLS_EXPLICIT; | |
8241 | tls_clear = TLS_LD; | |
8242 | } | |
8243 | break; | |
8244 | ||
8245 | default: | |
8246 | continue; | |
8247 | } | |
8248 | ||
8249 | if (pass == 0) | |
8250 | { | |
727fc41e | 8251 | if (!expecting_tls_get_addr |
9737e8af | 8252 | || !sec->nomark_tls_get_addr) |
102890f0 AM |
8253 | continue; |
8254 | ||
3a71aa26 AM |
8255 | if (rel + 1 < relend |
8256 | && branch_reloc_hash_match (ibfd, rel + 1, | |
9e7028aa AM |
8257 | htab->tls_get_addr_fd, |
8258 | htab->tga_desc_fd, | |
3a71aa26 | 8259 | htab->tls_get_addr, |
9e7028aa | 8260 | htab->tga_desc)) |
102890f0 | 8261 | { |
3a71aa26 | 8262 | if (expecting_tls_get_addr == 2) |
102890f0 | 8263 | { |
3a71aa26 | 8264 | /* Check for toc tls entries. */ |
f961d9dd | 8265 | unsigned char *toc_tls; |
3a71aa26 AM |
8266 | int retval; |
8267 | ||
8268 | retval = get_tls_mask (&toc_tls, NULL, NULL, | |
8269 | &locsyms, | |
8270 | rel, ibfd); | |
8271 | if (retval == 0) | |
8272 | goto err_free_rel; | |
663a1470 AM |
8273 | if (toc_tls != NULL) |
8274 | { | |
37da22e5 AM |
8275 | if ((*toc_tls & TLS_TLS) != 0 |
8276 | && ((*toc_tls & (TLS_GD | TLS_LD)) != 0)) | |
663a1470 AM |
8277 | found_tls_get_addr_arg = 1; |
8278 | if (retval > 1) | |
8279 | toc_ref[toc_ref_index] = 1; | |
8280 | } | |
102890f0 | 8281 | } |
3a71aa26 | 8282 | continue; |
102890f0 AM |
8283 | } |
8284 | ||
102890f0 AM |
8285 | /* Uh oh, we didn't find the expected call. We |
8286 | could just mark this symbol to exclude it | |
8287 | from tls optimization but it's safer to skip | |
663a1470 | 8288 | the entire optimization. */ |
695344c0 | 8289 | /* xgettext:c-format */ |
25f53a85 | 8290 | info->callbacks->minfo (_("%H arg lost __tls_get_addr, " |
663a1470 AM |
8291 | "TLS optimization disabled\n"), |
8292 | ibfd, sec, rel->r_offset); | |
8293 | ret = TRUE; | |
8294 | goto err_free_rel; | |
102890f0 AM |
8295 | } |
8296 | ||
37da22e5 AM |
8297 | /* If we don't have old-style __tls_get_addr calls |
8298 | without TLSGD/TLSLD marker relocs, and we haven't | |
8299 | found a new-style __tls_get_addr call with a | |
8300 | marker for this symbol, then we either have a | |
8301 | broken object file or an -mlongcall style | |
8302 | indirect call to __tls_get_addr without a marker. | |
8303 | Disable optimization in this case. */ | |
8304 | if ((tls_clear & (TLS_GD | TLS_LD)) != 0 | |
8305 | && (tls_set & TLS_EXPLICIT) == 0 | |
9737e8af | 8306 | && !sec->nomark_tls_get_addr |
37da22e5 AM |
8307 | && ((*tls_mask & (TLS_TLS | TLS_MARK)) |
8308 | != (TLS_TLS | TLS_MARK))) | |
8309 | continue; | |
8310 | ||
7d04a20a | 8311 | if (expecting_tls_get_addr == 1 + !sec->nomark_tls_get_addr) |
102890f0 | 8312 | { |
23cedd1d AM |
8313 | struct plt_entry *ent = NULL; |
8314 | ||
9e7028aa AM |
8315 | if (htab->tls_get_addr_fd != NULL) |
8316 | for (ent = htab->tls_get_addr_fd->elf.plt.plist; | |
8317 | ent != NULL; | |
8318 | ent = ent->next) | |
8319 | if (ent->addend == 0) | |
8320 | break; | |
8321 | ||
8322 | if (ent == NULL && htab->tga_desc_fd != NULL) | |
8323 | for (ent = htab->tga_desc_fd->elf.plt.plist; | |
8324 | ent != NULL; | |
8325 | ent = ent->next) | |
8326 | if (ent->addend == 0) | |
8327 | break; | |
8328 | ||
8329 | if (ent == NULL && htab->tls_get_addr != NULL) | |
23cedd1d AM |
8330 | for (ent = htab->tls_get_addr->elf.plt.plist; |
8331 | ent != NULL; | |
8332 | ent = ent->next) | |
8333 | if (ent->addend == 0) | |
102890f0 | 8334 | break; |
411e1bfb | 8335 | |
9e7028aa AM |
8336 | if (ent == NULL && htab->tga_desc != NULL) |
8337 | for (ent = htab->tga_desc->elf.plt.plist; | |
23cedd1d AM |
8338 | ent != NULL; |
8339 | ent = ent->next) | |
8340 | if (ent->addend == 0) | |
102890f0 | 8341 | break; |
23cedd1d AM |
8342 | |
8343 | if (ent != NULL | |
8344 | && ent->plt.refcount > 0) | |
8345 | ent->plt.refcount -= 1; | |
102890f0 | 8346 | } |
411e1bfb | 8347 | |
102890f0 | 8348 | if (tls_clear == 0) |
30038c59 AM |
8349 | continue; |
8350 | ||
102890f0 AM |
8351 | if ((tls_set & TLS_EXPLICIT) == 0) |
8352 | { | |
8353 | struct got_entry *ent; | |
411e1bfb | 8354 | |
102890f0 AM |
8355 | /* Adjust got entry for this reloc. */ |
8356 | if (h != NULL) | |
8357 | ent = h->got.glist; | |
8358 | else | |
8359 | ent = elf_local_got_ents (ibfd)[r_symndx]; | |
411e1bfb | 8360 | |
102890f0 AM |
8361 | for (; ent != NULL; ent = ent->next) |
8362 | if (ent->addend == rel->r_addend | |
8363 | && ent->owner == ibfd | |
8364 | && ent->tls_type == tls_type) | |
8365 | break; | |
8366 | if (ent == NULL) | |
8367 | abort (); | |
411e1bfb | 8368 | |
102890f0 AM |
8369 | if (tls_set == 0) |
8370 | { | |
8371 | /* We managed to get rid of a got entry. */ | |
8372 | if (ent->got.refcount > 0) | |
8373 | ent->got.refcount -= 1; | |
8374 | } | |
8375 | } | |
8376 | else | |
8377 | { | |
8378 | /* If we got rid of a DTPMOD/DTPREL reloc pair then | |
8379 | we'll lose one or two dyn relocs. */ | |
8380 | if (!dec_dynrel_count (rel->r_info, sec, info, | |
19e08130 | 8381 | NULL, h, sym)) |
102890f0 | 8382 | return FALSE; |
411e1bfb | 8383 | |
102890f0 AM |
8384 | if (tls_set == (TLS_EXPLICIT | TLS_GD)) |
8385 | { | |
8386 | if (!dec_dynrel_count ((rel + 1)->r_info, sec, info, | |
19e08130 | 8387 | NULL, h, sym)) |
102890f0 AM |
8388 | return FALSE; |
8389 | } | |
8390 | } | |
411e1bfb | 8391 | |
46e9995a | 8392 | *tls_mask |= tls_set & 0xff; |
102890f0 AM |
8393 | *tls_mask &= ~tls_clear; |
8394 | } | |
8c1d1bb8 | 8395 | |
102890f0 AM |
8396 | if (elf_section_data (sec)->relocs != relstart) |
8397 | free (relstart); | |
8398 | } | |
411e1bfb | 8399 | |
663a1470 AM |
8400 | if (locsyms != NULL |
8401 | && (elf_symtab_hdr (ibfd).contents != (unsigned char *) locsyms)) | |
8402 | { | |
8403 | if (!info->keep_memory) | |
8404 | free (locsyms); | |
8405 | else | |
8406 | elf_symtab_hdr (ibfd).contents = (unsigned char *) locsyms; | |
8407 | } | |
8408 | } | |
411e1bfb | 8409 | |
c9594989 | 8410 | free (toc_ref); |
9a23f96e | 8411 | htab->do_tls_opt = 1; |
b34976b6 | 8412 | return TRUE; |
1e2f5b6e | 8413 | } |
b34976b6 | 8414 | |
c5614fa4 AM |
8415 | /* Called via elf_link_hash_traverse from ppc64_elf_edit_toc to adjust |
8416 | the values of any global symbols in a toc section that has been | |
8417 | edited. Globals in toc sections should be a rarity, so this function | |
8418 | sets a flag if any are found in toc sections other than the one just | |
de194d85 | 8419 | edited, so that further hash table traversals can be avoided. */ |
c5614fa4 AM |
8420 | |
8421 | struct adjust_toc_info | |
8422 | { | |
8423 | asection *toc; | |
8424 | unsigned long *skip; | |
8425 | bfd_boolean global_toc_syms; | |
8426 | }; | |
8427 | ||
ba761f19 AM |
8428 | enum toc_skip_enum { ref_from_discarded = 1, can_optimize = 2 }; |
8429 | ||
c5614fa4 AM |
8430 | static bfd_boolean |
8431 | adjust_toc_syms (struct elf_link_hash_entry *h, void *inf) | |
8432 | { | |
8433 | struct ppc_link_hash_entry *eh; | |
8434 | struct adjust_toc_info *toc_inf = (struct adjust_toc_info *) inf; | |
854b41e7 | 8435 | unsigned long i; |
c5614fa4 | 8436 | |
c5614fa4 AM |
8437 | if (h->root.type != bfd_link_hash_defined |
8438 | && h->root.type != bfd_link_hash_defweak) | |
8439 | return TRUE; | |
8440 | ||
ed7007c1 | 8441 | eh = ppc_elf_hash_entry (h); |
c5614fa4 AM |
8442 | if (eh->adjust_done) |
8443 | return TRUE; | |
8444 | ||
8445 | if (eh->elf.root.u.def.section == toc_inf->toc) | |
8446 | { | |
854b41e7 AM |
8447 | if (eh->elf.root.u.def.value > toc_inf->toc->rawsize) |
8448 | i = toc_inf->toc->rawsize >> 3; | |
c5614fa4 | 8449 | else |
854b41e7 AM |
8450 | i = eh->elf.root.u.def.value >> 3; |
8451 | ||
ba761f19 | 8452 | if ((toc_inf->skip[i] & (ref_from_discarded | can_optimize)) != 0) |
c5614fa4 | 8453 | { |
4eca0228 | 8454 | _bfd_error_handler |
854b41e7 AM |
8455 | (_("%s defined on removed toc entry"), eh->elf.root.root.string); |
8456 | do | |
8457 | ++i; | |
ba761f19 | 8458 | while ((toc_inf->skip[i] & (ref_from_discarded | can_optimize)) != 0); |
854b41e7 | 8459 | eh->elf.root.u.def.value = (bfd_vma) i << 3; |
c5614fa4 | 8460 | } |
854b41e7 AM |
8461 | |
8462 | eh->elf.root.u.def.value -= toc_inf->skip[i]; | |
c5614fa4 AM |
8463 | eh->adjust_done = 1; |
8464 | } | |
8465 | else if (strcmp (eh->elf.root.u.def.section->name, ".toc") == 0) | |
8466 | toc_inf->global_toc_syms = TRUE; | |
8467 | ||
8468 | return TRUE; | |
8469 | } | |
8470 | ||
39eeab25 AM |
8471 | /* Return TRUE iff INSN with a relocation of R_TYPE is one we expect |
8472 | on a _LO variety toc/got reloc. */ | |
560c8763 AM |
8473 | |
8474 | static bfd_boolean | |
39eeab25 | 8475 | ok_lo_toc_insn (unsigned int insn, enum elf_ppc64_reloc_type r_type) |
560c8763 | 8476 | { |
2365f8d7 AM |
8477 | return ((insn & (0x3fu << 26)) == 12u << 26 /* addic */ |
8478 | || (insn & (0x3fu << 26)) == 14u << 26 /* addi */ | |
8479 | || (insn & (0x3fu << 26)) == 32u << 26 /* lwz */ | |
8480 | || (insn & (0x3fu << 26)) == 34u << 26 /* lbz */ | |
8481 | || (insn & (0x3fu << 26)) == 36u << 26 /* stw */ | |
8482 | || (insn & (0x3fu << 26)) == 38u << 26 /* stb */ | |
8483 | || (insn & (0x3fu << 26)) == 40u << 26 /* lhz */ | |
8484 | || (insn & (0x3fu << 26)) == 42u << 26 /* lha */ | |
8485 | || (insn & (0x3fu << 26)) == 44u << 26 /* sth */ | |
8486 | || (insn & (0x3fu << 26)) == 46u << 26 /* lmw */ | |
8487 | || (insn & (0x3fu << 26)) == 47u << 26 /* stmw */ | |
8488 | || (insn & (0x3fu << 26)) == 48u << 26 /* lfs */ | |
8489 | || (insn & (0x3fu << 26)) == 50u << 26 /* lfd */ | |
8490 | || (insn & (0x3fu << 26)) == 52u << 26 /* stfs */ | |
8491 | || (insn & (0x3fu << 26)) == 54u << 26 /* stfd */ | |
8492 | || (insn & (0x3fu << 26)) == 56u << 26 /* lq,lfq */ | |
8493 | || ((insn & (0x3fu << 26)) == 57u << 26 /* lxsd,lxssp,lfdp */ | |
39eeab25 AM |
8494 | /* Exclude lfqu by testing reloc. If relocs are ever |
8495 | defined for the reduced D field in psq_lu then those | |
8496 | will need testing too. */ | |
8497 | && r_type != R_PPC64_TOC16_LO && r_type != R_PPC64_GOT16_LO) | |
2365f8d7 | 8498 | || ((insn & (0x3fu << 26)) == 58u << 26 /* ld,lwa */ |
39eeab25 | 8499 | && (insn & 1) == 0) |
2365f8d7 AM |
8500 | || (insn & (0x3fu << 26)) == 60u << 26 /* stfq */ |
8501 | || ((insn & (0x3fu << 26)) == 61u << 26 /* lxv,stx{v,sd,ssp},stfdp */ | |
39eeab25 AM |
8502 | /* Exclude stfqu. psq_stu as above for psq_lu. */ |
8503 | && r_type != R_PPC64_TOC16_LO && r_type != R_PPC64_GOT16_LO) | |
2365f8d7 | 8504 | || ((insn & (0x3fu << 26)) == 62u << 26 /* std,stq */ |
39eeab25 | 8505 | && (insn & 1) == 0)); |
560c8763 AM |
8506 | } |
8507 | ||
4a421c53 AM |
8508 | /* PCREL_OPT in one instance flags to the linker that a pair of insns: |
8509 | pld ra,symbol@got@pcrel | |
dd9b12c2 | 8510 | load/store rt,off(ra) |
4a421c53 | 8511 | or |
d4b87b1e | 8512 | pla ra,symbol@pcrel |
dd9b12c2 | 8513 | load/store rt,off(ra) |
4a421c53 | 8514 | may be translated to |
dd9b12c2 | 8515 | pload/pstore rt,symbol+off@pcrel |
4a421c53 AM |
8516 | nop. |
8517 | This function returns true if the optimization is possible, placing | |
dd9b12c2 | 8518 | the prefix insn in *PINSN1, a NOP in *PINSN2 and the offset in *POFF. |
4a421c53 AM |
8519 | |
8520 | On entry to this function, the linker has already determined that | |
d4b87b1e | 8521 | the pld can be replaced with pla: *PINSN1 is that pla insn, |
4a421c53 AM |
8522 | while *PINSN2 is the second instruction. */ |
8523 | ||
8524 | static bfd_boolean | |
dd9b12c2 | 8525 | xlate_pcrel_opt (uint64_t *pinsn1, uint64_t *pinsn2, bfd_signed_vma *poff) |
4a421c53 | 8526 | { |
77486630 AM |
8527 | uint64_t insn1 = *pinsn1; |
8528 | uint64_t insn2 = *pinsn2; | |
dd9b12c2 | 8529 | bfd_signed_vma off; |
4a421c53 | 8530 | |
77486630 AM |
8531 | if ((insn2 & (63ULL << 58)) == 1ULL << 58) |
8532 | { | |
8533 | /* Check that regs match. */ | |
8534 | if (((insn2 >> 16) & 31) != ((insn1 >> 21) & 31)) | |
8535 | return FALSE; | |
8536 | ||
8537 | /* P8LS or PMLS form, non-pcrel. */ | |
8538 | if ((insn2 & (-1ULL << 50) & ~(1ULL << 56)) != (1ULL << 58)) | |
8539 | return FALSE; | |
8540 | ||
8541 | *pinsn1 = (insn2 & ~(31 << 16) & ~0x3ffff0000ffffULL) | (1ULL << 52); | |
8542 | *pinsn2 = PNOP; | |
8543 | off = ((insn2 >> 16) & 0x3ffff0000ULL) | (insn2 & 0xffff); | |
8544 | *poff = (off ^ 0x200000000ULL) - 0x200000000ULL; | |
8545 | return TRUE; | |
8546 | } | |
8547 | ||
8548 | insn2 >>= 32; | |
8549 | ||
4a421c53 | 8550 | /* Check that regs match. */ |
77486630 | 8551 | if (((insn2 >> 16) & 31) != ((insn1 >> 21) & 31)) |
4a421c53 AM |
8552 | return FALSE; |
8553 | ||
8554 | switch ((insn2 >> 26) & 63) | |
8555 | { | |
8556 | default: | |
8557 | return FALSE; | |
8558 | ||
8559 | case 32: /* lwz */ | |
8560 | case 34: /* lbz */ | |
8561 | case 36: /* stw */ | |
8562 | case 38: /* stb */ | |
8563 | case 40: /* lhz */ | |
8564 | case 42: /* lha */ | |
8565 | case 44: /* sth */ | |
8566 | case 48: /* lfs */ | |
8567 | case 50: /* lfd */ | |
8568 | case 52: /* stfs */ | |
8569 | case 54: /* stfd */ | |
8570 | /* These are the PMLS cases, where we just need to tack a prefix | |
dd9b12c2 | 8571 | on the insn. */ |
77486630 | 8572 | insn1 = ((1ULL << 58) | (2ULL << 56) | (1ULL << 52) |
4a421c53 | 8573 | | (insn2 & ((63ULL << 26) | (31ULL << 21)))); |
dd9b12c2 | 8574 | off = insn2 & 0xffff; |
4a421c53 AM |
8575 | break; |
8576 | ||
8577 | case 58: /* lwa, ld */ | |
dd9b12c2 | 8578 | if ((insn2 & 1) != 0) |
4a421c53 | 8579 | return FALSE; |
77486630 | 8580 | insn1 = ((1ULL << 58) | (1ULL << 52) |
4a421c53 AM |
8581 | | (insn2 & 2 ? 41ULL << 26 : 57ULL << 26) |
8582 | | (insn2 & (31ULL << 21))); | |
dd9b12c2 | 8583 | off = insn2 & 0xfffc; |
4a421c53 AM |
8584 | break; |
8585 | ||
8586 | case 57: /* lxsd, lxssp */ | |
dd9b12c2 | 8587 | if ((insn2 & 3) < 2) |
4a421c53 | 8588 | return FALSE; |
77486630 | 8589 | insn1 = ((1ULL << 58) | (1ULL << 52) |
4a421c53 AM |
8590 | | ((40ULL | (insn2 & 3)) << 26) |
8591 | | (insn2 & (31ULL << 21))); | |
dd9b12c2 | 8592 | off = insn2 & 0xfffc; |
4a421c53 AM |
8593 | break; |
8594 | ||
8595 | case 61: /* stxsd, stxssp, lxv, stxv */ | |
8596 | if ((insn2 & 3) == 0) | |
8597 | return FALSE; | |
8598 | else if ((insn2 & 3) >= 2) | |
8599 | { | |
77486630 | 8600 | insn1 = ((1ULL << 58) | (1ULL << 52) |
4a421c53 AM |
8601 | | ((44ULL | (insn2 & 3)) << 26) |
8602 | | (insn2 & (31ULL << 21))); | |
dd9b12c2 | 8603 | off = insn2 & 0xfffc; |
4a421c53 AM |
8604 | } |
8605 | else | |
8606 | { | |
77486630 | 8607 | insn1 = ((1ULL << 58) | (1ULL << 52) |
4a421c53 AM |
8608 | | ((50ULL | (insn2 & 4) | ((insn2 & 8) >> 3)) << 26) |
8609 | | (insn2 & (31ULL << 21))); | |
dd9b12c2 | 8610 | off = insn2 & 0xfff0; |
4a421c53 AM |
8611 | } |
8612 | break; | |
8613 | ||
8614 | case 56: /* lq */ | |
77486630 | 8615 | insn1 = ((1ULL << 58) | (1ULL << 52) |
4a421c53 | 8616 | | (insn2 & ((63ULL << 26) | (31ULL << 21)))); |
dd9b12c2 | 8617 | off = insn2 & 0xffff; |
4a421c53 AM |
8618 | break; |
8619 | ||
94ba9882 AM |
8620 | case 6: /* lxvp, stxvp */ |
8621 | if ((insn2 & 0xe) != 0) | |
8622 | return FALSE; | |
8623 | insn1 = ((1ULL << 58) | (1ULL << 52) | |
8624 | | ((insn2 & 1) == 0 ? 58ULL << 26 : 62ULL << 26) | |
8625 | | (insn2 & (31ULL << 21))); | |
8626 | off = insn2 & 0xfff0; | |
8627 | break; | |
8628 | ||
4a421c53 | 8629 | case 62: /* std, stq */ |
dd9b12c2 | 8630 | if ((insn2 & 1) != 0) |
4a421c53 | 8631 | return FALSE; |
77486630 | 8632 | insn1 = ((1ULL << 58) | (1ULL << 52) |
4a421c53 AM |
8633 | | ((insn2 & 2) == 0 ? 61ULL << 26 : 60ULL << 26) |
8634 | | (insn2 & (31ULL << 21))); | |
dd9b12c2 | 8635 | off = insn2 & 0xfffc; |
4a421c53 AM |
8636 | break; |
8637 | } | |
8638 | ||
77486630 | 8639 | *pinsn1 = insn1; |
4a421c53 | 8640 | *pinsn2 = (uint64_t) NOP << 32; |
dd9b12c2 | 8641 | *poff = (off ^ 0x8000) - 0x8000; |
4a421c53 AM |
8642 | return TRUE; |
8643 | } | |
8644 | ||
c5614fa4 AM |
8645 | /* Examine all relocs referencing .toc sections in order to remove |
8646 | unused .toc entries. */ | |
8647 | ||
8648 | bfd_boolean | |
33c0ec9d | 8649 | ppc64_elf_edit_toc (struct bfd_link_info *info) |
c5614fa4 AM |
8650 | { |
8651 | bfd *ibfd; | |
8652 | struct adjust_toc_info toc_inf; | |
67f0cbdb | 8653 | struct ppc_link_hash_table *htab = ppc_hash_table (info); |
c5614fa4 | 8654 | |
67f0cbdb | 8655 | htab->do_toc_opt = 1; |
c5614fa4 | 8656 | toc_inf.global_toc_syms = TRUE; |
c72f2fb2 | 8657 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next) |
c5614fa4 AM |
8658 | { |
8659 | asection *toc, *sec; | |
8660 | Elf_Internal_Shdr *symtab_hdr; | |
8661 | Elf_Internal_Sym *local_syms; | |
425b145b | 8662 | Elf_Internal_Rela *relstart, *rel, *toc_relocs; |
c5614fa4 AM |
8663 | unsigned long *skip, *drop; |
8664 | unsigned char *used; | |
8665 | unsigned char *keep, last, some_unused; | |
8666 | ||
854b41e7 AM |
8667 | if (!is_ppc64_elf (ibfd)) |
8668 | continue; | |
8669 | ||
c5614fa4 AM |
8670 | toc = bfd_get_section_by_name (ibfd, ".toc"); |
8671 | if (toc == NULL | |
92b7a70f | 8672 | || toc->size == 0 |
dbaa2011 AM |
8673 | || toc->sec_info_type == SEC_INFO_TYPE_JUST_SYMS |
8674 | || discarded_section (toc)) | |
c5614fa4 AM |
8675 | continue; |
8676 | ||
425b145b | 8677 | toc_relocs = NULL; |
c5614fa4 | 8678 | local_syms = NULL; |
0ffa91dd | 8679 | symtab_hdr = &elf_symtab_hdr (ibfd); |
c5614fa4 AM |
8680 | |
8681 | /* Look at sections dropped from the final link. */ | |
8682 | skip = NULL; | |
8683 | relstart = NULL; | |
8684 | for (sec = ibfd->sections; sec != NULL; sec = sec->next) | |
8685 | { | |
8686 | if (sec->reloc_count == 0 | |
dbaa2011 | 8687 | || !discarded_section (sec) |
c5614fa4 AM |
8688 | || get_opd_info (sec) |
8689 | || (sec->flags & SEC_ALLOC) == 0 | |
8690 | || (sec->flags & SEC_DEBUGGING) != 0) | |
8691 | continue; | |
8692 | ||
8693 | relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL, FALSE); | |
8694 | if (relstart == NULL) | |
8695 | goto error_ret; | |
8696 | ||
8697 | /* Run through the relocs to see which toc entries might be | |
8698 | unused. */ | |
8699 | for (rel = relstart; rel < relstart + sec->reloc_count; ++rel) | |
8700 | { | |
8701 | enum elf_ppc64_reloc_type r_type; | |
8702 | unsigned long r_symndx; | |
8703 | asection *sym_sec; | |
8704 | struct elf_link_hash_entry *h; | |
8705 | Elf_Internal_Sym *sym; | |
8706 | bfd_vma val; | |
8707 | ||
8708 | r_type = ELF64_R_TYPE (rel->r_info); | |
8709 | switch (r_type) | |
8710 | { | |
8711 | default: | |
8712 | continue; | |
8713 | ||
8714 | case R_PPC64_TOC16: | |
8715 | case R_PPC64_TOC16_LO: | |
8716 | case R_PPC64_TOC16_HI: | |
8717 | case R_PPC64_TOC16_HA: | |
8718 | case R_PPC64_TOC16_DS: | |
8719 | case R_PPC64_TOC16_LO_DS: | |
8720 | break; | |
8721 | } | |
8722 | ||
8723 | r_symndx = ELF64_R_SYM (rel->r_info); | |
8724 | if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, | |
8725 | r_symndx, ibfd)) | |
8726 | goto error_ret; | |
8727 | ||
8728 | if (sym_sec != toc) | |
8729 | continue; | |
8730 | ||
8731 | if (h != NULL) | |
8732 | val = h->root.u.def.value; | |
8733 | else | |
8734 | val = sym->st_value; | |
8735 | val += rel->r_addend; | |
8736 | ||
8737 | if (val >= toc->size) | |
8738 | continue; | |
8739 | ||
8740 | /* Anything in the toc ought to be aligned to 8 bytes. | |
8741 | If not, don't mark as unused. */ | |
8742 | if (val & 7) | |
8743 | continue; | |
8744 | ||
8745 | if (skip == NULL) | |
8746 | { | |
854b41e7 | 8747 | skip = bfd_zmalloc (sizeof (*skip) * (toc->size + 15) / 8); |
c5614fa4 AM |
8748 | if (skip == NULL) |
8749 | goto error_ret; | |
8750 | } | |
8751 | ||
ba761f19 | 8752 | skip[val >> 3] = ref_from_discarded; |
c5614fa4 AM |
8753 | } |
8754 | ||
8755 | if (elf_section_data (sec)->relocs != relstart) | |
8756 | free (relstart); | |
8757 | } | |
8758 | ||
ba761f19 AM |
8759 | /* For largetoc loads of address constants, we can convert |
8760 | . addis rx,2,addr@got@ha | |
8761 | . ld ry,addr@got@l(rx) | |
8762 | to | |
8763 | . addis rx,2,addr@toc@ha | |
8764 | . addi ry,rx,addr@toc@l | |
8765 | when addr is within 2G of the toc pointer. This then means | |
8766 | that the word storing "addr" in the toc is no longer needed. */ | |
68ffbac6 | 8767 | |
ba761f19 AM |
8768 | if (!ppc64_elf_tdata (ibfd)->has_small_toc_reloc |
8769 | && toc->output_section->rawsize < (bfd_vma) 1 << 31 | |
8770 | && toc->reloc_count != 0) | |
8771 | { | |
8772 | /* Read toc relocs. */ | |
425b145b AM |
8773 | toc_relocs = _bfd_elf_link_read_relocs (ibfd, toc, NULL, NULL, |
8774 | info->keep_memory); | |
8775 | if (toc_relocs == NULL) | |
ba761f19 AM |
8776 | goto error_ret; |
8777 | ||
425b145b | 8778 | for (rel = toc_relocs; rel < toc_relocs + toc->reloc_count; ++rel) |
ba761f19 AM |
8779 | { |
8780 | enum elf_ppc64_reloc_type r_type; | |
8781 | unsigned long r_symndx; | |
8782 | asection *sym_sec; | |
8783 | struct elf_link_hash_entry *h; | |
8784 | Elf_Internal_Sym *sym; | |
8785 | bfd_vma val, addr; | |
8786 | ||
8787 | r_type = ELF64_R_TYPE (rel->r_info); | |
8788 | if (r_type != R_PPC64_ADDR64) | |
8789 | continue; | |
8790 | ||
8791 | r_symndx = ELF64_R_SYM (rel->r_info); | |
8792 | if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, | |
8793 | r_symndx, ibfd)) | |
8794 | goto error_ret; | |
8795 | ||
425b145b | 8796 | if (sym_sec == NULL |
c27b8c2a | 8797 | || sym_sec->output_section == NULL |
dbaa2011 | 8798 | || discarded_section (sym_sec)) |
425b145b AM |
8799 | continue; |
8800 | ||
afe397ea | 8801 | if (!SYMBOL_REFERENCES_LOCAL (info, h)) |
ba761f19 AM |
8802 | continue; |
8803 | ||
8804 | if (h != NULL) | |
bddc25c9 AM |
8805 | { |
8806 | if (h->type == STT_GNU_IFUNC) | |
8807 | continue; | |
8808 | val = h->root.u.def.value; | |
8809 | } | |
ba761f19 | 8810 | else |
bddc25c9 AM |
8811 | { |
8812 | if (ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC) | |
8813 | continue; | |
8814 | val = sym->st_value; | |
8815 | } | |
ba761f19 AM |
8816 | val += rel->r_addend; |
8817 | val += sym_sec->output_section->vma + sym_sec->output_offset; | |
8818 | ||
8819 | /* We don't yet know the exact toc pointer value, but we | |
8820 | know it will be somewhere in the toc section. Don't | |
8821 | optimize if the difference from any possible toc | |
8822 | pointer is outside [ff..f80008000, 7fff7fff]. */ | |
8823 | addr = toc->output_section->vma + TOC_BASE_OFF; | |
8824 | if (val - addr + (bfd_vma) 0x80008000 >= (bfd_vma) 1 << 32) | |
8825 | continue; | |
8826 | ||
8827 | addr = toc->output_section->vma + toc->output_section->rawsize; | |
8828 | if (val - addr + (bfd_vma) 0x80008000 >= (bfd_vma) 1 << 32) | |
8829 | continue; | |
8830 | ||
8831 | if (skip == NULL) | |
8832 | { | |
8833 | skip = bfd_zmalloc (sizeof (*skip) * (toc->size + 15) / 8); | |
8834 | if (skip == NULL) | |
8835 | goto error_ret; | |
8836 | } | |
8837 | ||
8838 | skip[rel->r_offset >> 3] | |
425b145b | 8839 | |= can_optimize | ((rel - toc_relocs) << 2); |
ba761f19 | 8840 | } |
ba761f19 AM |
8841 | } |
8842 | ||
c5614fa4 AM |
8843 | if (skip == NULL) |
8844 | continue; | |
8845 | ||
8846 | used = bfd_zmalloc (sizeof (*used) * (toc->size + 7) / 8); | |
8847 | if (used == NULL) | |
8848 | { | |
8849 | error_ret: | |
c9594989 | 8850 | if (symtab_hdr->contents != (unsigned char *) local_syms) |
c5614fa4 AM |
8851 | free (local_syms); |
8852 | if (sec != NULL | |
c5614fa4 AM |
8853 | && elf_section_data (sec)->relocs != relstart) |
8854 | free (relstart); | |
c9594989 | 8855 | if (elf_section_data (toc)->relocs != toc_relocs) |
425b145b | 8856 | free (toc_relocs); |
c9594989 | 8857 | free (skip); |
c5614fa4 AM |
8858 | return FALSE; |
8859 | } | |
8860 | ||
30038c59 AM |
8861 | /* Now check all kept sections that might reference the toc. |
8862 | Check the toc itself last. */ | |
8863 | for (sec = (ibfd->sections == toc && toc->next ? toc->next | |
8864 | : ibfd->sections); | |
c5614fa4 | 8865 | sec != NULL; |
c5614fa4 | 8866 | sec = (sec == toc ? NULL |
c5614fa4 | 8867 | : sec->next == NULL ? toc |
30038c59 | 8868 | : sec->next == toc && toc->next ? toc->next |
c5614fa4 AM |
8869 | : sec->next)) |
8870 | { | |
8871 | int repeat; | |
8872 | ||
8873 | if (sec->reloc_count == 0 | |
dbaa2011 | 8874 | || discarded_section (sec) |
c5614fa4 AM |
8875 | || get_opd_info (sec) |
8876 | || (sec->flags & SEC_ALLOC) == 0 | |
8877 | || (sec->flags & SEC_DEBUGGING) != 0) | |
8878 | continue; | |
8879 | ||
854b41e7 AM |
8880 | relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL, |
8881 | info->keep_memory); | |
c5614fa4 | 8882 | if (relstart == NULL) |
2915c55b JK |
8883 | { |
8884 | free (used); | |
8885 | goto error_ret; | |
8886 | } | |
c5614fa4 AM |
8887 | |
8888 | /* Mark toc entries referenced as used. */ | |
c5614fa4 | 8889 | do |
d4f1ee75 AM |
8890 | { |
8891 | repeat = 0; | |
8892 | for (rel = relstart; rel < relstart + sec->reloc_count; ++rel) | |
8893 | { | |
8894 | enum elf_ppc64_reloc_type r_type; | |
8895 | unsigned long r_symndx; | |
8896 | asection *sym_sec; | |
8897 | struct elf_link_hash_entry *h; | |
8898 | Elf_Internal_Sym *sym; | |
8899 | bfd_vma val; | |
98528052 | 8900 | |
d4f1ee75 | 8901 | r_type = ELF64_R_TYPE (rel->r_info); |
d4f1ee75 AM |
8902 | switch (r_type) |
8903 | { | |
8904 | case R_PPC64_TOC16: | |
8905 | case R_PPC64_TOC16_LO: | |
8906 | case R_PPC64_TOC16_HI: | |
8907 | case R_PPC64_TOC16_HA: | |
8908 | case R_PPC64_TOC16_DS: | |
8909 | case R_PPC64_TOC16_LO_DS: | |
8910 | /* In case we're taking addresses of toc entries. */ | |
8911 | case R_PPC64_ADDR64: | |
8912 | break; | |
c5614fa4 | 8913 | |
d4f1ee75 AM |
8914 | default: |
8915 | continue; | |
8916 | } | |
c5614fa4 | 8917 | |
d4f1ee75 AM |
8918 | r_symndx = ELF64_R_SYM (rel->r_info); |
8919 | if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, | |
8920 | r_symndx, ibfd)) | |
8921 | { | |
8922 | free (used); | |
8923 | goto error_ret; | |
8924 | } | |
c5614fa4 | 8925 | |
d4f1ee75 AM |
8926 | if (sym_sec != toc) |
8927 | continue; | |
c5614fa4 | 8928 | |
d4f1ee75 AM |
8929 | if (h != NULL) |
8930 | val = h->root.u.def.value; | |
8931 | else | |
8932 | val = sym->st_value; | |
8933 | val += rel->r_addend; | |
ba761f19 | 8934 | |
d4f1ee75 AM |
8935 | if (val >= toc->size) |
8936 | continue; | |
ba761f19 | 8937 | |
d4f1ee75 AM |
8938 | if ((skip[val >> 3] & can_optimize) != 0) |
8939 | { | |
8940 | bfd_vma off; | |
8941 | unsigned char opc; | |
8942 | ||
8943 | switch (r_type) | |
8944 | { | |
8945 | case R_PPC64_TOC16_HA: | |
ba761f19 | 8946 | break; |
ba761f19 | 8947 | |
d4f1ee75 AM |
8948 | case R_PPC64_TOC16_LO_DS: |
8949 | off = rel->r_offset; | |
8950 | off += (bfd_big_endian (ibfd) ? -2 : 3); | |
8951 | if (!bfd_get_section_contents (ibfd, sec, &opc, | |
8952 | off, 1)) | |
8953 | { | |
8954 | free (used); | |
8955 | goto error_ret; | |
8956 | } | |
8957 | if ((opc & (0x3f << 2)) == (58u << 2)) | |
8958 | break; | |
1a0670f3 | 8959 | /* Fall through. */ |
ba761f19 | 8960 | |
d4f1ee75 AM |
8961 | default: |
8962 | /* Wrong sort of reloc, or not a ld. We may | |
8963 | as well clear ref_from_discarded too. */ | |
8964 | skip[val >> 3] = 0; | |
8965 | } | |
8966 | } | |
8967 | ||
8968 | if (sec != toc) | |
8969 | used[val >> 3] = 1; | |
8970 | /* For the toc section, we only mark as used if this | |
8971 | entry itself isn't unused. */ | |
8972 | else if ((used[rel->r_offset >> 3] | |
8973 | || !(skip[rel->r_offset >> 3] & ref_from_discarded)) | |
8974 | && !used[val >> 3]) | |
8975 | { | |
8976 | /* Do all the relocs again, to catch reference | |
8977 | chains. */ | |
8978 | repeat = 1; | |
8979 | used[val >> 3] = 1; | |
8980 | } | |
8981 | } | |
8982 | } | |
c5614fa4 | 8983 | while (repeat); |
854b41e7 AM |
8984 | |
8985 | if (elf_section_data (sec)->relocs != relstart) | |
8986 | free (relstart); | |
c5614fa4 AM |
8987 | } |
8988 | ||
8989 | /* Merge the used and skip arrays. Assume that TOC | |
8990 | doublewords not appearing as either used or unused belong | |
de194d85 | 8991 | to an entry more than one doubleword in size. */ |
c5614fa4 AM |
8992 | for (drop = skip, keep = used, last = 0, some_unused = 0; |
8993 | drop < skip + (toc->size + 7) / 8; | |
8994 | ++drop, ++keep) | |
8995 | { | |
8996 | if (*keep) | |
8997 | { | |
ba761f19 AM |
8998 | *drop &= ~ref_from_discarded; |
8999 | if ((*drop & can_optimize) != 0) | |
9000 | some_unused = 1; | |
c5614fa4 AM |
9001 | last = 0; |
9002 | } | |
b140b010 | 9003 | else if ((*drop & ref_from_discarded) != 0) |
c5614fa4 AM |
9004 | { |
9005 | some_unused = 1; | |
ba761f19 | 9006 | last = ref_from_discarded; |
c5614fa4 AM |
9007 | } |
9008 | else | |
9009 | *drop = last; | |
9010 | } | |
9011 | ||
9012 | free (used); | |
9013 | ||
9014 | if (some_unused) | |
9015 | { | |
9016 | bfd_byte *contents, *src; | |
9017 | unsigned long off; | |
d62b3684 | 9018 | Elf_Internal_Sym *sym; |
ba761f19 | 9019 | bfd_boolean local_toc_syms = FALSE; |
c5614fa4 AM |
9020 | |
9021 | /* Shuffle the toc contents, and at the same time convert the | |
9022 | skip array from booleans into offsets. */ | |
9023 | if (!bfd_malloc_and_get_section (ibfd, toc, &contents)) | |
9024 | goto error_ret; | |
9025 | ||
9026 | elf_section_data (toc)->this_hdr.contents = contents; | |
9027 | ||
9028 | for (src = contents, off = 0, drop = skip; | |
9029 | src < contents + toc->size; | |
9030 | src += 8, ++drop) | |
9031 | { | |
ba761f19 AM |
9032 | if ((*drop & (can_optimize | ref_from_discarded)) != 0) |
9033 | off += 8; | |
c5614fa4 AM |
9034 | else if (off != 0) |
9035 | { | |
9036 | *drop = off; | |
9037 | memcpy (src - off, src, 8); | |
9038 | } | |
9039 | } | |
854b41e7 | 9040 | *drop = off; |
c5614fa4 AM |
9041 | toc->rawsize = toc->size; |
9042 | toc->size = src - contents - off; | |
9043 | ||
ba761f19 AM |
9044 | /* Adjust addends for relocs against the toc section sym, |
9045 | and optimize any accesses we can. */ | |
c5614fa4 AM |
9046 | for (sec = ibfd->sections; sec != NULL; sec = sec->next) |
9047 | { | |
9048 | if (sec->reloc_count == 0 | |
dbaa2011 | 9049 | || discarded_section (sec)) |
c5614fa4 AM |
9050 | continue; |
9051 | ||
9052 | relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL, | |
854b41e7 | 9053 | info->keep_memory); |
c5614fa4 AM |
9054 | if (relstart == NULL) |
9055 | goto error_ret; | |
9056 | ||
9057 | for (rel = relstart; rel < relstart + sec->reloc_count; ++rel) | |
9058 | { | |
9059 | enum elf_ppc64_reloc_type r_type; | |
9060 | unsigned long r_symndx; | |
9061 | asection *sym_sec; | |
9062 | struct elf_link_hash_entry *h; | |
854b41e7 | 9063 | bfd_vma val; |
c5614fa4 AM |
9064 | |
9065 | r_type = ELF64_R_TYPE (rel->r_info); | |
9066 | switch (r_type) | |
9067 | { | |
9068 | default: | |
9069 | continue; | |
9070 | ||
9071 | case R_PPC64_TOC16: | |
9072 | case R_PPC64_TOC16_LO: | |
9073 | case R_PPC64_TOC16_HI: | |
9074 | case R_PPC64_TOC16_HA: | |
9075 | case R_PPC64_TOC16_DS: | |
9076 | case R_PPC64_TOC16_LO_DS: | |
9077 | case R_PPC64_ADDR64: | |
9078 | break; | |
9079 | } | |
9080 | ||
9081 | r_symndx = ELF64_R_SYM (rel->r_info); | |
9082 | if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, | |
9083 | r_symndx, ibfd)) | |
9084 | goto error_ret; | |
9085 | ||
ba761f19 | 9086 | if (sym_sec != toc) |
c5614fa4 AM |
9087 | continue; |
9088 | ||
ba761f19 AM |
9089 | if (h != NULL) |
9090 | val = h->root.u.def.value; | |
9091 | else | |
9092 | { | |
9093 | val = sym->st_value; | |
9094 | if (val != 0) | |
9095 | local_toc_syms = TRUE; | |
9096 | } | |
9097 | ||
9098 | val += rel->r_addend; | |
854b41e7 AM |
9099 | |
9100 | if (val > toc->rawsize) | |
9101 | val = toc->rawsize; | |
ba761f19 AM |
9102 | else if ((skip[val >> 3] & ref_from_discarded) != 0) |
9103 | continue; | |
9104 | else if ((skip[val >> 3] & can_optimize) != 0) | |
9105 | { | |
9106 | Elf_Internal_Rela *tocrel | |
425b145b | 9107 | = toc_relocs + (skip[val >> 3] >> 2); |
ba761f19 AM |
9108 | unsigned long tsym = ELF64_R_SYM (tocrel->r_info); |
9109 | ||
9110 | switch (r_type) | |
9111 | { | |
9112 | case R_PPC64_TOC16_HA: | |
9113 | rel->r_info = ELF64_R_INFO (tsym, R_PPC64_TOC16_HA); | |
9114 | break; | |
9115 | ||
9116 | case R_PPC64_TOC16_LO_DS: | |
9117 | rel->r_info = ELF64_R_INFO (tsym, R_PPC64_LO_DS_OPT); | |
9118 | break; | |
9119 | ||
9120 | default: | |
28942f62 AM |
9121 | if (!ppc64_elf_howto_table[R_PPC64_ADDR32]) |
9122 | ppc_howto_init (); | |
b140b010 | 9123 | info->callbacks->einfo |
695344c0 | 9124 | /* xgettext:c-format */ |
174d0a74 | 9125 | (_("%H: %s references " |
b140b010 AM |
9126 | "optimized away TOC entry\n"), |
9127 | ibfd, sec, rel->r_offset, | |
9128 | ppc64_elf_howto_table[r_type]->name); | |
9129 | bfd_set_error (bfd_error_bad_value); | |
9130 | goto error_ret; | |
ba761f19 AM |
9131 | } |
9132 | rel->r_addend = tocrel->r_addend; | |
9133 | elf_section_data (sec)->relocs = relstart; | |
9134 | continue; | |
9135 | } | |
9136 | ||
9137 | if (h != NULL || sym->st_value != 0) | |
9138 | continue; | |
854b41e7 AM |
9139 | |
9140 | rel->r_addend -= skip[val >> 3]; | |
9141 | elf_section_data (sec)->relocs = relstart; | |
c5614fa4 | 9142 | } |
854b41e7 AM |
9143 | |
9144 | if (elf_section_data (sec)->relocs != relstart) | |
9145 | free (relstart); | |
c5614fa4 AM |
9146 | } |
9147 | ||
9148 | /* We shouldn't have local or global symbols defined in the TOC, | |
9149 | but handle them anyway. */ | |
df22d223 AM |
9150 | if (local_syms != NULL) |
9151 | for (sym = local_syms; | |
9152 | sym < local_syms + symtab_hdr->sh_info; | |
9153 | ++sym) | |
9154 | if (sym->st_value != 0 | |
9155 | && bfd_section_from_elf_index (ibfd, sym->st_shndx) == toc) | |
9156 | { | |
9157 | unsigned long i; | |
854b41e7 | 9158 | |
df22d223 AM |
9159 | if (sym->st_value > toc->rawsize) |
9160 | i = toc->rawsize >> 3; | |
9161 | else | |
9162 | i = sym->st_value >> 3; | |
854b41e7 | 9163 | |
df22d223 AM |
9164 | if ((skip[i] & (ref_from_discarded | can_optimize)) != 0) |
9165 | { | |
9166 | if (local_toc_syms) | |
4eca0228 | 9167 | _bfd_error_handler |
df22d223 AM |
9168 | (_("%s defined on removed toc entry"), |
9169 | bfd_elf_sym_name (ibfd, symtab_hdr, sym, NULL)); | |
9170 | do | |
9171 | ++i; | |
9172 | while ((skip[i] & (ref_from_discarded | can_optimize))); | |
9173 | sym->st_value = (bfd_vma) i << 3; | |
9174 | } | |
d62b3684 | 9175 | |
df22d223 AM |
9176 | sym->st_value -= skip[i]; |
9177 | symtab_hdr->contents = (unsigned char *) local_syms; | |
9178 | } | |
c5614fa4 | 9179 | |
854b41e7 | 9180 | /* Adjust any global syms defined in this toc input section. */ |
c5614fa4 AM |
9181 | if (toc_inf.global_toc_syms) |
9182 | { | |
9183 | toc_inf.toc = toc; | |
9184 | toc_inf.skip = skip; | |
9185 | toc_inf.global_toc_syms = FALSE; | |
9186 | elf_link_hash_traverse (elf_hash_table (info), adjust_toc_syms, | |
9187 | &toc_inf); | |
9188 | } | |
854b41e7 AM |
9189 | |
9190 | if (toc->reloc_count != 0) | |
9191 | { | |
d4730f92 | 9192 | Elf_Internal_Shdr *rel_hdr; |
854b41e7 AM |
9193 | Elf_Internal_Rela *wrel; |
9194 | bfd_size_type sz; | |
9195 | ||
854b41e7 | 9196 | /* Remove unused toc relocs, and adjust those we keep. */ |
28be611c AM |
9197 | if (toc_relocs == NULL) |
9198 | toc_relocs = _bfd_elf_link_read_relocs (ibfd, toc, NULL, NULL, | |
9199 | info->keep_memory); | |
9200 | if (toc_relocs == NULL) | |
9201 | goto error_ret; | |
9202 | ||
425b145b AM |
9203 | wrel = toc_relocs; |
9204 | for (rel = toc_relocs; rel < toc_relocs + toc->reloc_count; ++rel) | |
ba761f19 AM |
9205 | if ((skip[rel->r_offset >> 3] |
9206 | & (ref_from_discarded | can_optimize)) == 0) | |
854b41e7 AM |
9207 | { |
9208 | wrel->r_offset = rel->r_offset - skip[rel->r_offset >> 3]; | |
9209 | wrel->r_info = rel->r_info; | |
9210 | wrel->r_addend = rel->r_addend; | |
9211 | ++wrel; | |
9212 | } | |
9213 | else if (!dec_dynrel_count (rel->r_info, toc, info, | |
9214 | &local_syms, NULL, NULL)) | |
9215 | goto error_ret; | |
9216 | ||
425b145b AM |
9217 | elf_section_data (toc)->relocs = toc_relocs; |
9218 | toc->reloc_count = wrel - toc_relocs; | |
d4730f92 BS |
9219 | rel_hdr = _bfd_elf_single_rel_hdr (toc); |
9220 | sz = rel_hdr->sh_entsize; | |
9221 | rel_hdr->sh_size = toc->reloc_count * sz; | |
854b41e7 | 9222 | } |
c5614fa4 | 9223 | } |
c9594989 | 9224 | else if (elf_section_data (toc)->relocs != toc_relocs) |
425b145b | 9225 | free (toc_relocs); |
c5614fa4 AM |
9226 | |
9227 | if (local_syms != NULL | |
9228 | && symtab_hdr->contents != (unsigned char *) local_syms) | |
9229 | { | |
9230 | if (!info->keep_memory) | |
9231 | free (local_syms); | |
9232 | else | |
9233 | symtab_hdr->contents = (unsigned char *) local_syms; | |
9234 | } | |
9235 | free (skip); | |
9236 | } | |
9237 | ||
066f4018 | 9238 | /* Look for cases where we can change an indirect GOT access to |
4a421c53 AM |
9239 | a GOT relative or PC relative access, possibly reducing the |
9240 | number of GOT entries. */ | |
066f4018 AM |
9241 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next) |
9242 | { | |
9243 | asection *sec; | |
9244 | Elf_Internal_Shdr *symtab_hdr; | |
9245 | Elf_Internal_Sym *local_syms; | |
9246 | Elf_Internal_Rela *relstart, *rel; | |
9247 | bfd_vma got; | |
9248 | ||
9249 | if (!is_ppc64_elf (ibfd)) | |
9250 | continue; | |
9251 | ||
903b777d | 9252 | if (!ppc64_elf_tdata (ibfd)->has_optrel) |
066f4018 AM |
9253 | continue; |
9254 | ||
9255 | sec = ppc64_elf_tdata (ibfd)->got; | |
903b777d AM |
9256 | got = 0; |
9257 | if (sec != NULL) | |
9258 | got = sec->output_section->vma + sec->output_offset + 0x8000; | |
066f4018 AM |
9259 | |
9260 | local_syms = NULL; | |
9261 | symtab_hdr = &elf_symtab_hdr (ibfd); | |
9262 | ||
9263 | for (sec = ibfd->sections; sec != NULL; sec = sec->next) | |
9264 | { | |
9265 | if (sec->reloc_count == 0 | |
903b777d | 9266 | || !ppc64_elf_section_data (sec)->has_optrel |
066f4018 AM |
9267 | || discarded_section (sec)) |
9268 | continue; | |
9269 | ||
9270 | relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL, | |
9271 | info->keep_memory); | |
9272 | if (relstart == NULL) | |
9273 | { | |
9274 | got_error_ret: | |
c9594989 | 9275 | if (symtab_hdr->contents != (unsigned char *) local_syms) |
066f4018 AM |
9276 | free (local_syms); |
9277 | if (sec != NULL | |
066f4018 AM |
9278 | && elf_section_data (sec)->relocs != relstart) |
9279 | free (relstart); | |
9280 | return FALSE; | |
9281 | } | |
9282 | ||
9283 | for (rel = relstart; rel < relstart + sec->reloc_count; ++rel) | |
9284 | { | |
9285 | enum elf_ppc64_reloc_type r_type; | |
9286 | unsigned long r_symndx; | |
9287 | Elf_Internal_Sym *sym; | |
9288 | asection *sym_sec; | |
9289 | struct elf_link_hash_entry *h; | |
9290 | struct got_entry *ent; | |
133a1f60 | 9291 | bfd_vma val, pc; |
4a421c53 | 9292 | unsigned char buf[8]; |
066f4018 | 9293 | unsigned int insn; |
903b777d | 9294 | enum {no_check, check_lo, check_ha} insn_check; |
066f4018 AM |
9295 | |
9296 | r_type = ELF64_R_TYPE (rel->r_info); | |
903b777d AM |
9297 | switch (r_type) |
9298 | { | |
9299 | default: | |
9300 | insn_check = no_check; | |
9301 | break; | |
9302 | ||
9303 | case R_PPC64_PLT16_HA: | |
9304 | case R_PPC64_GOT_TLSLD16_HA: | |
9305 | case R_PPC64_GOT_TLSGD16_HA: | |
9306 | case R_PPC64_GOT_TPREL16_HA: | |
9307 | case R_PPC64_GOT_DTPREL16_HA: | |
9308 | case R_PPC64_GOT16_HA: | |
9309 | case R_PPC64_TOC16_HA: | |
9310 | insn_check = check_ha; | |
9311 | break; | |
9312 | ||
9313 | case R_PPC64_PLT16_LO: | |
9314 | case R_PPC64_PLT16_LO_DS: | |
9315 | case R_PPC64_GOT_TLSLD16_LO: | |
9316 | case R_PPC64_GOT_TLSGD16_LO: | |
9317 | case R_PPC64_GOT_TPREL16_LO_DS: | |
9318 | case R_PPC64_GOT_DTPREL16_LO_DS: | |
9319 | case R_PPC64_GOT16_LO: | |
9320 | case R_PPC64_GOT16_LO_DS: | |
9321 | case R_PPC64_TOC16_LO: | |
9322 | case R_PPC64_TOC16_LO_DS: | |
9323 | insn_check = check_lo; | |
9324 | break; | |
9325 | } | |
9326 | ||
9327 | if (insn_check != no_check) | |
9328 | { | |
9329 | bfd_vma off = rel->r_offset & ~3; | |
9330 | ||
9331 | if (!bfd_get_section_contents (ibfd, sec, buf, off, 4)) | |
9332 | goto got_error_ret; | |
9333 | ||
9334 | insn = bfd_get_32 (ibfd, buf); | |
9335 | if (insn_check == check_lo | |
9336 | ? !ok_lo_toc_insn (insn, r_type) | |
2365f8d7 | 9337 | : ((insn & ((0x3fu << 26) | 0x1f << 16)) |
903b777d AM |
9338 | != ((15u << 26) | (2 << 16)) /* addis rt,2,imm */)) |
9339 | { | |
9340 | char str[12]; | |
9341 | ||
9342 | ppc64_elf_tdata (ibfd)->unexpected_toc_insn = 1; | |
9343 | sprintf (str, "%#08x", insn); | |
9344 | info->callbacks->einfo | |
9345 | /* xgettext:c-format */ | |
9346 | (_("%H: got/toc optimization is not supported for" | |
9347 | " %s instruction\n"), | |
9348 | ibfd, sec, rel->r_offset & ~3, str); | |
9349 | continue; | |
9350 | } | |
9351 | } | |
9352 | ||
066f4018 AM |
9353 | switch (r_type) |
9354 | { | |
bb22a418 AM |
9355 | /* Note that we don't delete GOT entries for |
9356 | R_PPC64_GOT16_DS since we'd need a lot more | |
9357 | analysis. For starters, the preliminary layout is | |
9358 | before the GOT, PLT, dynamic sections and stubs are | |
9359 | laid out. Then we'd need to allow for changes in | |
9360 | distance between sections caused by alignment. */ | |
066f4018 AM |
9361 | default: |
9362 | continue; | |
9363 | ||
066f4018 AM |
9364 | case R_PPC64_GOT16_HA: |
9365 | case R_PPC64_GOT16_LO_DS: | |
4a421c53 | 9366 | case R_PPC64_GOT_PCREL34: |
066f4018 AM |
9367 | break; |
9368 | } | |
9369 | ||
9370 | r_symndx = ELF64_R_SYM (rel->r_info); | |
9371 | if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, | |
9372 | r_symndx, ibfd)) | |
9373 | goto got_error_ret; | |
9374 | ||
6d5554a6 AM |
9375 | if (sym_sec == NULL |
9376 | || sym_sec->output_section == NULL | |
9377 | || discarded_section (sym_sec)) | |
9378 | continue; | |
9379 | ||
06507dab AM |
9380 | if ((h ? h->type : ELF_ST_TYPE (sym->st_info)) == STT_GNU_IFUNC) |
9381 | continue; | |
9382 | ||
066f4018 AM |
9383 | if (!SYMBOL_REFERENCES_LOCAL (info, h)) |
9384 | continue; | |
9385 | ||
9386 | if (h != NULL) | |
9387 | val = h->root.u.def.value; | |
9388 | else | |
9389 | val = sym->st_value; | |
133a1f60 | 9390 | val += rel->r_addend; |
066f4018 AM |
9391 | val += sym_sec->output_section->vma + sym_sec->output_offset; |
9392 | ||
bb22a418 AM |
9393 | /* Fudge factor to allow for the fact that the preliminary layout |
9394 | isn't exact. Reduce limits by this factor. */ | |
9395 | #define LIMIT_ADJUST(LIMIT) ((LIMIT) - (LIMIT) / 16) | |
9396 | ||
066f4018 AM |
9397 | switch (r_type) |
9398 | { | |
9399 | default: | |
9400 | continue; | |
9401 | ||
066f4018 | 9402 | case R_PPC64_GOT16_HA: |
bb22a418 AM |
9403 | if (val - got + LIMIT_ADJUST (0x80008000ULL) |
9404 | >= LIMIT_ADJUST (0x100000000ULL)) | |
066f4018 AM |
9405 | continue; |
9406 | ||
9407 | if (!bfd_get_section_contents (ibfd, sec, buf, | |
9408 | rel->r_offset & ~3, 4)) | |
9409 | goto got_error_ret; | |
9410 | insn = bfd_get_32 (ibfd, buf); | |
2365f8d7 | 9411 | if (((insn & ((0x3fu << 26) | 0x1f << 16)) |
066f4018 AM |
9412 | != ((15u << 26) | (2 << 16)) /* addis rt,2,imm */)) |
9413 | continue; | |
9414 | break; | |
9415 | ||
9416 | case R_PPC64_GOT16_LO_DS: | |
bb22a418 AM |
9417 | if (val - got + LIMIT_ADJUST (0x80008000ULL) |
9418 | >= LIMIT_ADJUST (0x100000000ULL)) | |
066f4018 AM |
9419 | continue; |
9420 | if (!bfd_get_section_contents (ibfd, sec, buf, | |
9421 | rel->r_offset & ~3, 4)) | |
9422 | goto got_error_ret; | |
9423 | insn = bfd_get_32 (ibfd, buf); | |
2365f8d7 | 9424 | if ((insn & (0x3fu << 26 | 0x3)) != 58u << 26 /* ld */) |
066f4018 AM |
9425 | continue; |
9426 | break; | |
4a421c53 AM |
9427 | |
9428 | case R_PPC64_GOT_PCREL34: | |
9429 | pc = rel->r_offset; | |
9430 | pc += sec->output_section->vma + sec->output_offset; | |
bb22a418 AM |
9431 | if (val - pc + LIMIT_ADJUST (1ULL << 33) |
9432 | >= LIMIT_ADJUST (1ULL << 34)) | |
4a421c53 AM |
9433 | continue; |
9434 | if (!bfd_get_section_contents (ibfd, sec, buf, | |
9435 | rel->r_offset & ~3, 8)) | |
9436 | goto got_error_ret; | |
9437 | insn = bfd_get_32 (ibfd, buf); | |
9438 | if ((insn & (-1u << 18)) != ((1u << 26) | (1u << 20))) | |
9439 | continue; | |
9440 | insn = bfd_get_32 (ibfd, buf + 4); | |
2365f8d7 | 9441 | if ((insn & (0x3fu << 26)) != 57u << 26) |
4a421c53 AM |
9442 | continue; |
9443 | break; | |
066f4018 | 9444 | } |
bb22a418 | 9445 | #undef LIMIT_ADJUST |
066f4018 AM |
9446 | |
9447 | if (h != NULL) | |
9448 | ent = h->got.glist; | |
9449 | else | |
9450 | { | |
9451 | struct got_entry **local_got_ents = elf_local_got_ents (ibfd); | |
9452 | ent = local_got_ents[r_symndx]; | |
9453 | } | |
9454 | for (; ent != NULL; ent = ent->next) | |
133a1f60 | 9455 | if (ent->addend == rel->r_addend |
066f4018 AM |
9456 | && ent->owner == ibfd |
9457 | && ent->tls_type == 0) | |
9458 | break; | |
9459 | BFD_ASSERT (ent && ent->got.refcount > 0); | |
9460 | ent->got.refcount -= 1; | |
9461 | } | |
9462 | ||
9463 | if (elf_section_data (sec)->relocs != relstart) | |
9464 | free (relstart); | |
9465 | } | |
9466 | ||
9467 | if (local_syms != NULL | |
9468 | && symtab_hdr->contents != (unsigned char *) local_syms) | |
9469 | { | |
9470 | if (!info->keep_memory) | |
9471 | free (local_syms); | |
9472 | else | |
9473 | symtab_hdr->contents = (unsigned char *) local_syms; | |
9474 | } | |
9475 | } | |
9476 | ||
c5614fa4 AM |
9477 | return TRUE; |
9478 | } | |
9479 | ||
1bbe0902 AM |
9480 | /* Return true iff input section I references the TOC using |
9481 | instructions limited to +/-32k offsets. */ | |
9482 | ||
9483 | bfd_boolean | |
9484 | ppc64_elf_has_small_toc_reloc (asection *i) | |
9485 | { | |
9486 | return (is_ppc64_elf (i->owner) | |
9487 | && ppc64_elf_tdata (i->owner)->has_small_toc_reloc); | |
9488 | } | |
9489 | ||
927be08e AM |
9490 | /* Allocate space for one GOT entry. */ |
9491 | ||
9492 | static void | |
9493 | allocate_got (struct elf_link_hash_entry *h, | |
9494 | struct bfd_link_info *info, | |
9495 | struct got_entry *gent) | |
9496 | { | |
9497 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
ed7007c1 | 9498 | struct ppc_link_hash_entry *eh = ppc_elf_hash_entry (h); |
927be08e AM |
9499 | int entsize = (gent->tls_type & eh->tls_mask & (TLS_GD | TLS_LD) |
9500 | ? 16 : 8); | |
9501 | int rentsize = (gent->tls_type & eh->tls_mask & TLS_GD | |
9502 | ? 2 : 1) * sizeof (Elf64_External_Rela); | |
9503 | asection *got = ppc64_elf_tdata (gent->owner)->got; | |
9504 | ||
9505 | gent->got.offset = got->size; | |
9506 | got->size += entsize; | |
9507 | ||
19e08130 | 9508 | if (h->type == STT_GNU_IFUNC) |
927be08e | 9509 | { |
33e44f2e | 9510 | htab->elf.irelplt->size += rentsize; |
19e08130 | 9511 | htab->got_reli_size += rentsize; |
927be08e | 9512 | } |
f15d0b54 | 9513 | else if (((bfd_link_pic (info) |
f749f26e | 9514 | && !(gent->tls_type != 0 |
f15d0b54 AM |
9515 | && bfd_link_executable (info) |
9516 | && SYMBOL_REFERENCES_LOCAL (info, h))) | |
f0158f44 AM |
9517 | || (htab->elf.dynamic_sections_created |
9518 | && h->dynindx != -1 | |
9519 | && !SYMBOL_REFERENCES_LOCAL (info, h))) | |
21d68fcd | 9520 | && !UNDEFWEAK_NO_DYNAMIC_RELOC (info, h)) |
927be08e | 9521 | { |
19e08130 | 9522 | asection *relgot = ppc64_elf_tdata (gent->owner)->relgot; |
927be08e | 9523 | relgot->size += rentsize; |
927be08e AM |
9524 | } |
9525 | } | |
9526 | ||
7865406b AM |
9527 | /* This function merges got entries in the same toc group. */ |
9528 | ||
9529 | static void | |
9530 | merge_got_entries (struct got_entry **pent) | |
9531 | { | |
9532 | struct got_entry *ent, *ent2; | |
9533 | ||
9534 | for (ent = *pent; ent != NULL; ent = ent->next) | |
9535 | if (!ent->is_indirect) | |
9536 | for (ent2 = ent->next; ent2 != NULL; ent2 = ent2->next) | |
9537 | if (!ent2->is_indirect | |
9538 | && ent2->addend == ent->addend | |
9539 | && ent2->tls_type == ent->tls_type | |
9540 | && elf_gp (ent2->owner) == elf_gp (ent->owner)) | |
9541 | { | |
9542 | ent2->is_indirect = TRUE; | |
9543 | ent2->got.ent = ent; | |
9544 | } | |
9545 | } | |
9546 | ||
46434633 | 9547 | /* If H is undefined, make it dynamic if that makes sense. */ |
f0158f44 AM |
9548 | |
9549 | static bfd_boolean | |
46434633 AM |
9550 | ensure_undef_dynamic (struct bfd_link_info *info, |
9551 | struct elf_link_hash_entry *h) | |
f0158f44 AM |
9552 | { |
9553 | struct elf_link_hash_table *htab = elf_hash_table (info); | |
9554 | ||
9555 | if (htab->dynamic_sections_created | |
46434633 AM |
9556 | && ((info->dynamic_undefined_weak != 0 |
9557 | && h->root.type == bfd_link_hash_undefweak) | |
9558 | || h->root.type == bfd_link_hash_undefined) | |
f0158f44 AM |
9559 | && h->dynindx == -1 |
9560 | && !h->forced_local | |
9561 | && ELF_ST_VISIBILITY (h->other) == STV_DEFAULT) | |
9562 | return bfd_elf_link_record_dynamic_symbol (info, h); | |
9563 | return TRUE; | |
9564 | } | |
9565 | ||
65f38f15 AM |
9566 | /* Allocate space in .plt, .got and associated reloc sections for |
9567 | dynamic relocs. */ | |
5bd4f169 | 9568 | |
b34976b6 | 9569 | static bfd_boolean |
4ce794b7 | 9570 | allocate_dynrelocs (struct elf_link_hash_entry *h, void *inf) |
5bd4f169 | 9571 | { |
65f38f15 AM |
9572 | struct bfd_link_info *info; |
9573 | struct ppc_link_hash_table *htab; | |
5bd4f169 | 9574 | asection *s; |
65f38f15 | 9575 | struct ppc_link_hash_entry *eh; |
0b8bcf0d | 9576 | struct got_entry **pgent, *gent; |
5bd4f169 | 9577 | |
e92d460e | 9578 | if (h->root.type == bfd_link_hash_indirect) |
b34976b6 | 9579 | return TRUE; |
5bd4f169 | 9580 | |
65f38f15 AM |
9581 | info = (struct bfd_link_info *) inf; |
9582 | htab = ppc_hash_table (info); | |
4dfe6ac6 NC |
9583 | if (htab == NULL) |
9584 | return FALSE; | |
5bd4f169 | 9585 | |
ed7007c1 | 9586 | eh = ppc_elf_hash_entry (h); |
951fd09b AM |
9587 | /* Run through the TLS GD got entries first if we're changing them |
9588 | to TPREL. */ | |
b00a0a86 | 9589 | if ((eh->tls_mask & (TLS_TLS | TLS_GDIE)) == (TLS_TLS | TLS_GDIE)) |
951fd09b AM |
9590 | for (gent = h->got.glist; gent != NULL; gent = gent->next) |
9591 | if (gent->got.refcount > 0 | |
9592 | && (gent->tls_type & TLS_GD) != 0) | |
9593 | { | |
9594 | /* This was a GD entry that has been converted to TPREL. If | |
9595 | there happens to be a TPREL entry we can use that one. */ | |
9596 | struct got_entry *ent; | |
9597 | for (ent = h->got.glist; ent != NULL; ent = ent->next) | |
9598 | if (ent->got.refcount > 0 | |
9599 | && (ent->tls_type & TLS_TPREL) != 0 | |
e717da7e AM |
9600 | && ent->addend == gent->addend |
9601 | && ent->owner == gent->owner) | |
951fd09b AM |
9602 | { |
9603 | gent->got.refcount = 0; | |
9604 | break; | |
9605 | } | |
9606 | ||
9607 | /* If not, then we'll be using our own TPREL entry. */ | |
9608 | if (gent->got.refcount != 0) | |
9609 | gent->tls_type = TLS_TLS | TLS_TPREL; | |
9610 | } | |
9611 | ||
7865406b AM |
9612 | /* Remove any list entry that won't generate a word in the GOT before |
9613 | we call merge_got_entries. Otherwise we risk merging to empty | |
9614 | entries. */ | |
0b8bcf0d AM |
9615 | pgent = &h->got.glist; |
9616 | while ((gent = *pgent) != NULL) | |
411e1bfb | 9617 | if (gent->got.refcount > 0) |
7865406b AM |
9618 | { |
9619 | if ((gent->tls_type & TLS_LD) != 0 | |
f749f26e | 9620 | && SYMBOL_REFERENCES_LOCAL (info, h)) |
7865406b AM |
9621 | { |
9622 | ppc64_tlsld_got (gent->owner)->got.refcount += 1; | |
9623 | *pgent = gent->next; | |
9624 | } | |
9625 | else | |
9626 | pgent = &gent->next; | |
9627 | } | |
9628 | else | |
9629 | *pgent = gent->next; | |
9630 | ||
9631 | if (!htab->do_multi_toc) | |
9632 | merge_got_entries (&h->got.glist); | |
9633 | ||
9634 | for (gent = h->got.glist; gent != NULL; gent = gent->next) | |
9635 | if (!gent->is_indirect) | |
411e1bfb | 9636 | { |
ec73ddcd AM |
9637 | /* Ensure we catch all the cases where this symbol should |
9638 | be made dynamic. */ | |
46434633 | 9639 | if (!ensure_undef_dynamic (info, h)) |
f0158f44 | 9640 | return FALSE; |
65f38f15 | 9641 | |
0c8d6e5c | 9642 | if (!is_ppc64_elf (gent->owner)) |
927be08e | 9643 | abort (); |
0ffa91dd | 9644 | |
927be08e | 9645 | allocate_got (h, info, gent); |
411e1bfb | 9646 | } |
65f38f15 | 9647 | |
954b63d4 AM |
9648 | /* If no dynamic sections we can't have dynamic relocs, except for |
9649 | IFUNCs which are handled even in static executables. */ | |
8a2058b5 AM |
9650 | if (!htab->elf.dynamic_sections_created |
9651 | && h->type != STT_GNU_IFUNC) | |
190eb1dd | 9652 | h->dyn_relocs = NULL; |
8a2058b5 | 9653 | |
529fe20e AM |
9654 | /* Discard relocs on undefined symbols that must be local. */ |
9655 | else if (h->root.type == bfd_link_hash_undefined | |
9656 | && ELF_ST_VISIBILITY (h->other) != STV_DEFAULT) | |
190eb1dd | 9657 | h->dyn_relocs = NULL; |
529fe20e | 9658 | |
954b63d4 AM |
9659 | /* Also discard relocs on undefined weak syms with non-default |
9660 | visibility, or when dynamic_undefined_weak says so. */ | |
21d68fcd | 9661 | else if (UNDEFWEAK_NO_DYNAMIC_RELOC (info, h)) |
190eb1dd | 9662 | h->dyn_relocs = NULL; |
954b63d4 | 9663 | |
190eb1dd | 9664 | if (h->dyn_relocs != NULL) |
65f38f15 | 9665 | { |
8a2058b5 AM |
9666 | struct elf_dyn_relocs *p, **pp; |
9667 | ||
57e7d118 AM |
9668 | /* In the shared -Bsymbolic case, discard space allocated for |
9669 | dynamic pc-relative relocs against symbols which turn out to | |
9670 | be defined in regular objects. For the normal shared case, | |
9671 | discard space for relocs that have become local due to symbol | |
9672 | visibility changes. */ | |
57e7d118 | 9673 | if (bfd_link_pic (info)) |
65f38f15 | 9674 | { |
57e7d118 AM |
9675 | /* Relocs that use pc_count are those that appear on a call |
9676 | insn, or certain REL relocs (see must_be_dyn_reloc) that | |
9677 | can be generated via assembly. We want calls to | |
9678 | protected symbols to resolve directly to the function | |
9679 | rather than going via the plt. If people want function | |
9680 | pointer comparisons to work as expected then they should | |
9681 | avoid writing weird assembly. */ | |
9682 | if (SYMBOL_CALLS_LOCAL (info, h)) | |
9683 | { | |
190eb1dd | 9684 | for (pp = &h->dyn_relocs; (p = *pp) != NULL; ) |
57e7d118 AM |
9685 | { |
9686 | p->count -= p->pc_count; | |
9687 | p->pc_count = 0; | |
9688 | if (p->count == 0) | |
9689 | *pp = p->next; | |
9690 | else | |
9691 | pp = &p->next; | |
9692 | } | |
9693 | } | |
65f38f15 | 9694 | |
190eb1dd | 9695 | if (h->dyn_relocs != NULL) |
5bd4f169 | 9696 | { |
ec73ddcd AM |
9697 | /* Ensure we catch all the cases where this symbol |
9698 | should be made dynamic. */ | |
46434633 | 9699 | if (!ensure_undef_dynamic (info, h)) |
f0158f44 | 9700 | return FALSE; |
5bd4f169 | 9701 | } |
65f38f15 | 9702 | } |
ec73ddcd AM |
9703 | |
9704 | /* For a fixed position executable, discard space for | |
9705 | relocs against symbols which are not dynamic. */ | |
9706 | else if (h->type != STT_GNU_IFUNC) | |
57e7d118 | 9707 | { |
529fe20e AM |
9708 | if (h->dynamic_adjusted |
9709 | && !h->def_regular | |
9710 | && !ELF_COMMON_DEF_P (h)) | |
f0158f44 | 9711 | { |
ec73ddcd AM |
9712 | /* Ensure we catch all the cases where this symbol |
9713 | should be made dynamic. */ | |
46434633 | 9714 | if (!ensure_undef_dynamic (info, h)) |
f0158f44 | 9715 | return FALSE; |
dfbb6ac9 | 9716 | |
ec73ddcd | 9717 | /* But if that didn't work out, discard dynamic relocs. */ |
f0158f44 | 9718 | if (h->dynindx == -1) |
190eb1dd | 9719 | h->dyn_relocs = NULL; |
f0158f44 AM |
9720 | } |
9721 | else | |
190eb1dd | 9722 | h->dyn_relocs = NULL; |
57e7d118 AM |
9723 | } |
9724 | ||
9725 | /* Finally, allocate space. */ | |
190eb1dd | 9726 | for (p = h->dyn_relocs; p != NULL; p = p->next) |
57e7d118 AM |
9727 | { |
9728 | asection *sreloc = elf_section_data (p->sec)->sreloc; | |
9729 | if (eh->elf.type == STT_GNU_IFUNC) | |
9730 | sreloc = htab->elf.irelplt; | |
9731 | sreloc->size += p->count * sizeof (Elf64_External_Rela); | |
dfbb6ac9 | 9732 | } |
65f38f15 | 9733 | } |
57e7d118 | 9734 | |
2d7ad24e AM |
9735 | /* We might need a PLT entry when the symbol |
9736 | a) is dynamic, or | |
9737 | b) is an ifunc, or | |
9738 | c) has plt16 relocs and has been processed by adjust_dynamic_symbol, or | |
9739 | d) has plt16 relocs and we are linking statically. */ | |
9740 | if ((htab->elf.dynamic_sections_created && h->dynindx != -1) | |
9741 | || h->type == STT_GNU_IFUNC | |
9742 | || (h->needs_plt && h->dynamic_adjusted) | |
9743 | || (h->needs_plt | |
9744 | && h->def_regular | |
9745 | && !htab->elf.dynamic_sections_created | |
3e04d765 | 9746 | && !htab->can_convert_all_inline_plt |
ed7007c1 | 9747 | && (ppc_elf_hash_entry (h)->tls_mask |
2d7ad24e | 9748 | & (TLS_TLS | PLT_KEEP)) == PLT_KEEP)) |
65f38f15 | 9749 | { |
57e7d118 AM |
9750 | struct plt_entry *pent; |
9751 | bfd_boolean doneone = FALSE; | |
9752 | for (pent = h->plt.plist; pent != NULL; pent = pent->next) | |
9753 | if (pent->plt.refcount > 0) | |
9754 | { | |
9755 | if (!htab->elf.dynamic_sections_created | |
9756 | || h->dynindx == -1) | |
9757 | { | |
2d7ad24e AM |
9758 | if (h->type == STT_GNU_IFUNC) |
9759 | { | |
9760 | s = htab->elf.iplt; | |
9761 | pent->plt.offset = s->size; | |
9762 | s->size += PLT_ENTRY_SIZE (htab); | |
9763 | s = htab->elf.irelplt; | |
9764 | } | |
9765 | else | |
9766 | { | |
9767 | s = htab->pltlocal; | |
9768 | pent->plt.offset = s->size; | |
9769 | s->size += LOCAL_PLT_ENTRY_SIZE (htab); | |
9770 | s = bfd_link_pic (info) ? htab->relpltlocal : NULL; | |
9771 | } | |
57e7d118 AM |
9772 | } |
9773 | else | |
9774 | { | |
9775 | /* If this is the first .plt entry, make room for the special | |
9776 | first entry. */ | |
9777 | s = htab->elf.splt; | |
9778 | if (s->size == 0) | |
9779 | s->size += PLT_INITIAL_ENTRY_SIZE (htab); | |
65f38f15 | 9780 | |
57e7d118 | 9781 | pent->plt.offset = s->size; |
65f38f15 | 9782 | |
57e7d118 AM |
9783 | /* Make room for this entry. */ |
9784 | s->size += PLT_ENTRY_SIZE (htab); | |
65f38f15 | 9785 | |
57e7d118 AM |
9786 | /* Make room for the .glink code. */ |
9787 | s = htab->glink; | |
9788 | if (s->size == 0) | |
9e390558 | 9789 | s->size += GLINK_PLTRESOLVE_SIZE (htab); |
57e7d118 AM |
9790 | if (htab->opd_abi) |
9791 | { | |
9792 | /* We need bigger stubs past index 32767. */ | |
9e390558 | 9793 | if (s->size >= GLINK_PLTRESOLVE_SIZE (htab) + 32768*2*4) |
57e7d118 AM |
9794 | s->size += 4; |
9795 | s->size += 2*4; | |
9796 | } | |
9797 | else | |
9798 | s->size += 4; | |
65f38f15 | 9799 | |
57e7d118 AM |
9800 | /* We also need to make an entry in the .rela.plt section. */ |
9801 | s = htab->elf.srelplt; | |
9802 | } | |
2d7ad24e AM |
9803 | if (s != NULL) |
9804 | s->size += sizeof (Elf64_External_Rela); | |
57e7d118 AM |
9805 | doneone = TRUE; |
9806 | } | |
9807 | else | |
9808 | pent->plt.offset = (bfd_vma) -1; | |
9809 | if (!doneone) | |
9810 | { | |
9811 | h->plt.plist = NULL; | |
9812 | h->needs_plt = 0; | |
9813 | } | |
65f38f15 | 9814 | } |
57e7d118 | 9815 | else |
65f38f15 | 9816 | { |
57e7d118 AM |
9817 | h->plt.plist = NULL; |
9818 | h->needs_plt = 0; | |
65f38f15 AM |
9819 | } |
9820 | ||
b34976b6 | 9821 | return TRUE; |
65f38f15 AM |
9822 | } |
9823 | ||
9e390558 AM |
9824 | #define PPC_LO(v) ((v) & 0xffff) |
9825 | #define PPC_HI(v) (((v) >> 16) & 0xffff) | |
9826 | #define PPC_HA(v) PPC_HI ((v) + 0x8000) | |
04bdff6a AM |
9827 | #define D34(v) \ |
9828 | ((((v) & 0x3ffff0000ULL) << 16) | (v & 0xffff)) | |
9829 | #define HA34(v) ((v + (1ULL << 33)) >> 34) | |
9e390558 | 9830 | |
a345bc8d AM |
9831 | /* Called via elf_link_hash_traverse from ppc64_elf_size_dynamic_sections |
9832 | to set up space for global entry stubs. These are put in glink, | |
9833 | after the branch table. */ | |
65f38f15 | 9834 | |
b34976b6 | 9835 | static bfd_boolean |
a345bc8d | 9836 | size_global_entry_stubs (struct elf_link_hash_entry *h, void *inf) |
65f38f15 | 9837 | { |
a345bc8d AM |
9838 | struct bfd_link_info *info; |
9839 | struct ppc_link_hash_table *htab; | |
9840 | struct plt_entry *pent; | |
9e390558 | 9841 | asection *s, *plt; |
65f38f15 | 9842 | |
a345bc8d AM |
9843 | if (h->root.type == bfd_link_hash_indirect) |
9844 | return TRUE; | |
65f38f15 | 9845 | |
a345bc8d AM |
9846 | if (!h->pointer_equality_needed) |
9847 | return TRUE; | |
65f38f15 | 9848 | |
a345bc8d AM |
9849 | if (h->def_regular) |
9850 | return TRUE; | |
65f38f15 | 9851 | |
a345bc8d AM |
9852 | info = inf; |
9853 | htab = ppc_hash_table (info); | |
9854 | if (htab == NULL) | |
9855 | return FALSE; | |
9856 | ||
9e390558 AM |
9857 | s = htab->global_entry; |
9858 | plt = htab->elf.splt; | |
a345bc8d AM |
9859 | for (pent = h->plt.plist; pent != NULL; pent = pent->next) |
9860 | if (pent->plt.offset != (bfd_vma) -1 | |
9861 | && pent->addend == 0) | |
9862 | { | |
afe397ea AM |
9863 | /* For ELFv2, if this symbol is not defined in a regular file |
9864 | and we are not generating a shared library or pie, then we | |
9865 | need to define the symbol in the executable on a call stub. | |
9866 | This is to avoid text relocations. */ | |
9e390558 AM |
9867 | bfd_vma off, stub_align, stub_off, stub_size; |
9868 | unsigned int align_power; | |
9869 | ||
9870 | stub_size = 16; | |
9871 | stub_off = s->size; | |
9872 | if (htab->params->plt_stub_align >= 0) | |
9873 | align_power = htab->params->plt_stub_align; | |
9874 | else | |
9875 | align_power = -htab->params->plt_stub_align; | |
9876 | /* Setting section alignment is delayed until we know it is | |
9877 | non-empty. Otherwise the .text output section will be | |
9878 | aligned at least to plt_stub_align even when no global | |
9879 | entry stubs are needed. */ | |
9880 | if (s->alignment_power < align_power) | |
9881 | s->alignment_power = align_power; | |
9882 | stub_align = (bfd_vma) 1 << align_power; | |
9883 | if (htab->params->plt_stub_align >= 0 | |
9884 | || ((((stub_off + stub_size - 1) & -stub_align) | |
9885 | - (stub_off & -stub_align)) | |
9886 | > ((stub_size - 1) & -stub_align))) | |
9887 | stub_off = (stub_off + stub_align - 1) & -stub_align; | |
9888 | off = pent->plt.offset + plt->output_offset + plt->output_section->vma; | |
9889 | off -= stub_off + s->output_offset + s->output_section->vma; | |
9890 | /* Note that for --plt-stub-align negative we have a possible | |
9891 | dependency between stub offset and size. Break that | |
9892 | dependency by assuming the max stub size when calculating | |
9893 | the stub offset. */ | |
9894 | if (PPC_HA (off) == 0) | |
9895 | stub_size -= 4; | |
8a2058b5 | 9896 | h->root.type = bfd_link_hash_defined; |
afe397ea | 9897 | h->root.u.def.section = s; |
9e390558 AM |
9898 | h->root.u.def.value = stub_off; |
9899 | s->size = stub_off + stub_size; | |
a345bc8d AM |
9900 | break; |
9901 | } | |
9902 | return TRUE; | |
9903 | } | |
9904 | ||
65f38f15 AM |
9905 | /* Set the sizes of the dynamic sections. */ |
9906 | ||
b34976b6 | 9907 | static bfd_boolean |
ee67d69a | 9908 | ppc64_elf_size_dynamic_sections (bfd *output_bfd, |
4ce794b7 | 9909 | struct bfd_link_info *info) |
65f38f15 AM |
9910 | { |
9911 | struct ppc_link_hash_table *htab; | |
9912 | bfd *dynobj; | |
9913 | asection *s; | |
b34976b6 | 9914 | bfd_boolean relocs; |
65f38f15 | 9915 | bfd *ibfd; |
7865406b | 9916 | struct got_entry *first_tlsld; |
65f38f15 AM |
9917 | |
9918 | htab = ppc_hash_table (info); | |
4dfe6ac6 NC |
9919 | if (htab == NULL) |
9920 | return FALSE; | |
9921 | ||
65f38f15 AM |
9922 | dynobj = htab->elf.dynobj; |
9923 | if (dynobj == NULL) | |
9924 | abort (); | |
9925 | ||
9926 | if (htab->elf.dynamic_sections_created) | |
9927 | { | |
9928 | /* Set the contents of the .interp section to the interpreter. */ | |
9b8b325a | 9929 | if (bfd_link_executable (info) && !info->nointerp) |
65f38f15 | 9930 | { |
3d4d4302 | 9931 | s = bfd_get_linker_section (dynobj, ".interp"); |
65f38f15 AM |
9932 | if (s == NULL) |
9933 | abort (); | |
eea6121a | 9934 | s->size = sizeof ELF_DYNAMIC_INTERPRETER; |
65f38f15 AM |
9935 | s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER; |
9936 | } | |
9937 | } | |
9938 | ||
9939 | /* Set up .got offsets for local syms, and space for local dynamic | |
9940 | relocs. */ | |
c72f2fb2 | 9941 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next) |
65f38f15 | 9942 | { |
411e1bfb AM |
9943 | struct got_entry **lgot_ents; |
9944 | struct got_entry **end_lgot_ents; | |
e054468f AM |
9945 | struct plt_entry **local_plt; |
9946 | struct plt_entry **end_local_plt; | |
f961d9dd | 9947 | unsigned char *lgot_masks; |
65f38f15 AM |
9948 | bfd_size_type locsymcount; |
9949 | Elf_Internal_Shdr *symtab_hdr; | |
65f38f15 | 9950 | |
0c8d6e5c | 9951 | if (!is_ppc64_elf (ibfd)) |
65f38f15 AM |
9952 | continue; |
9953 | ||
9954 | for (s = ibfd->sections; s != NULL; s = s->next) | |
9955 | { | |
19e08130 | 9956 | struct ppc_dyn_relocs *p; |
65f38f15 | 9957 | |
6edfbbad | 9958 | for (p = elf_section_data (s)->local_dynrel; p != NULL; p = p->next) |
65f38f15 | 9959 | { |
ec338859 AM |
9960 | if (!bfd_is_abs_section (p->sec) |
9961 | && bfd_is_abs_section (p->sec->output_section)) | |
9962 | { | |
9963 | /* Input section has been discarded, either because | |
9964 | it is a copy of a linkonce section or due to | |
9965 | linker script /DISCARD/, so we'll be discarding | |
9966 | the relocs too. */ | |
9967 | } | |
248866a8 | 9968 | else if (p->count != 0) |
ec338859 | 9969 | { |
19e08130 AM |
9970 | asection *srel = elf_section_data (p->sec)->sreloc; |
9971 | if (p->ifunc) | |
33e44f2e | 9972 | srel = htab->elf.irelplt; |
eea6121a | 9973 | srel->size += p->count * sizeof (Elf64_External_Rela); |
248866a8 AM |
9974 | if ((p->sec->output_section->flags & SEC_READONLY) != 0) |
9975 | info->flags |= DF_TEXTREL; | |
ec338859 | 9976 | } |
65f38f15 AM |
9977 | } |
9978 | } | |
9979 | ||
411e1bfb AM |
9980 | lgot_ents = elf_local_got_ents (ibfd); |
9981 | if (!lgot_ents) | |
65f38f15 AM |
9982 | continue; |
9983 | ||
0ffa91dd | 9984 | symtab_hdr = &elf_symtab_hdr (ibfd); |
65f38f15 | 9985 | locsymcount = symtab_hdr->sh_info; |
411e1bfb | 9986 | end_lgot_ents = lgot_ents + locsymcount; |
e054468f AM |
9987 | local_plt = (struct plt_entry **) end_lgot_ents; |
9988 | end_local_plt = local_plt + locsymcount; | |
f961d9dd | 9989 | lgot_masks = (unsigned char *) end_local_plt; |
e717da7e | 9990 | s = ppc64_elf_tdata (ibfd)->got; |
e7b938ca | 9991 | for (; lgot_ents < end_lgot_ents; ++lgot_ents, ++lgot_masks) |
65f38f15 | 9992 | { |
0b8bcf0d | 9993 | struct got_entry **pent, *ent; |
411e1bfb | 9994 | |
0b8bcf0d AM |
9995 | pent = lgot_ents; |
9996 | while ((ent = *pent) != NULL) | |
411e1bfb AM |
9997 | if (ent->got.refcount > 0) |
9998 | { | |
e7b938ca | 9999 | if ((ent->tls_type & *lgot_masks & TLS_LD) != 0) |
411e1bfb | 10000 | { |
927be08e | 10001 | ppc64_tlsld_got (ibfd)->got.refcount += 1; |
0b8bcf0d | 10002 | *pent = ent->next; |
411e1bfb AM |
10003 | } |
10004 | else | |
10005 | { | |
19e08130 AM |
10006 | unsigned int ent_size = 8; |
10007 | unsigned int rel_size = sizeof (Elf64_External_Rela); | |
10008 | ||
eea6121a | 10009 | ent->got.offset = s->size; |
e7b938ca | 10010 | if ((ent->tls_type & *lgot_masks & TLS_GD) != 0) |
927be08e | 10011 | { |
19e08130 AM |
10012 | ent_size *= 2; |
10013 | rel_size *= 2; | |
10014 | } | |
10015 | s->size += ent_size; | |
37da22e5 | 10016 | if ((*lgot_masks & (TLS_TLS | PLT_IFUNC)) == PLT_IFUNC) |
19e08130 | 10017 | { |
33e44f2e | 10018 | htab->elf.irelplt->size += rel_size; |
19e08130 AM |
10019 | htab->got_reli_size += rel_size; |
10020 | } | |
93370e8e AM |
10021 | else if (bfd_link_pic (info) |
10022 | && !(ent->tls_type != 0 | |
10023 | && bfd_link_executable (info))) | |
19e08130 AM |
10024 | { |
10025 | asection *srel = ppc64_elf_tdata (ibfd)->relgot; | |
10026 | srel->size += rel_size; | |
927be08e | 10027 | } |
0b8bcf0d | 10028 | pent = &ent->next; |
411e1bfb AM |
10029 | } |
10030 | } | |
10031 | else | |
0b8bcf0d | 10032 | *pent = ent->next; |
65f38f15 | 10033 | } |
e054468f | 10034 | |
2d7ad24e AM |
10035 | /* Allocate space for plt calls to local syms. */ |
10036 | lgot_masks = (unsigned char *) end_local_plt; | |
10037 | for (; local_plt < end_local_plt; ++local_plt, ++lgot_masks) | |
e054468f AM |
10038 | { |
10039 | struct plt_entry *ent; | |
10040 | ||
10041 | for (ent = *local_plt; ent != NULL; ent = ent->next) | |
10042 | if (ent->plt.refcount > 0) | |
10043 | { | |
2d7ad24e AM |
10044 | if ((*lgot_masks & (TLS_TLS | PLT_IFUNC)) == PLT_IFUNC) |
10045 | { | |
10046 | s = htab->elf.iplt; | |
10047 | ent->plt.offset = s->size; | |
10048 | s->size += PLT_ENTRY_SIZE (htab); | |
10049 | htab->elf.irelplt->size += sizeof (Elf64_External_Rela); | |
10050 | } | |
3e04d765 AM |
10051 | else if (htab->can_convert_all_inline_plt |
10052 | || (*lgot_masks & (TLS_TLS | PLT_KEEP)) != PLT_KEEP) | |
2d7ad24e AM |
10053 | ent->plt.offset = (bfd_vma) -1; |
10054 | else | |
10055 | { | |
10056 | s = htab->pltlocal; | |
10057 | ent->plt.offset = s->size; | |
10058 | s->size += LOCAL_PLT_ENTRY_SIZE (htab); | |
10059 | if (bfd_link_pic (info)) | |
10060 | htab->relpltlocal->size += sizeof (Elf64_External_Rela); | |
10061 | } | |
e054468f AM |
10062 | } |
10063 | else | |
10064 | ent->plt.offset = (bfd_vma) -1; | |
10065 | } | |
65f38f15 AM |
10066 | } |
10067 | ||
10068 | /* Allocate global sym .plt and .got entries, and space for global | |
10069 | sym dynamic relocs. */ | |
4ce794b7 | 10070 | elf_link_hash_traverse (&htab->elf, allocate_dynrelocs, info); |
a345bc8d | 10071 | |
0e1862bb | 10072 | if (!htab->opd_abi && !bfd_link_pic (info)) |
a345bc8d | 10073 | elf_link_hash_traverse (&htab->elf, size_global_entry_stubs, info); |
65f38f15 | 10074 | |
7865406b | 10075 | first_tlsld = NULL; |
c72f2fb2 | 10076 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next) |
102890f0 | 10077 | { |
7865406b AM |
10078 | struct got_entry *ent; |
10079 | ||
0c8d6e5c | 10080 | if (!is_ppc64_elf (ibfd)) |
102890f0 AM |
10081 | continue; |
10082 | ||
7865406b AM |
10083 | ent = ppc64_tlsld_got (ibfd); |
10084 | if (ent->got.refcount > 0) | |
102890f0 | 10085 | { |
7865406b | 10086 | if (!htab->do_multi_toc && first_tlsld != NULL) |
102890f0 | 10087 | { |
7865406b AM |
10088 | ent->is_indirect = TRUE; |
10089 | ent->got.ent = first_tlsld; | |
10090 | } | |
10091 | else | |
10092 | { | |
10093 | if (first_tlsld == NULL) | |
10094 | first_tlsld = ent; | |
10095 | s = ppc64_elf_tdata (ibfd)->got; | |
10096 | ent->got.offset = s->size; | |
10097 | ent->owner = ibfd; | |
10098 | s->size += 16; | |
f749f26e | 10099 | if (bfd_link_dll (info)) |
7865406b AM |
10100 | { |
10101 | asection *srel = ppc64_elf_tdata (ibfd)->relgot; | |
10102 | srel->size += sizeof (Elf64_External_Rela); | |
10103 | } | |
102890f0 AM |
10104 | } |
10105 | } | |
10106 | else | |
7865406b | 10107 | ent->got.offset = (bfd_vma) -1; |
102890f0 AM |
10108 | } |
10109 | ||
65f38f15 AM |
10110 | /* We now have determined the sizes of the various dynamic sections. |
10111 | Allocate memory for them. */ | |
b34976b6 | 10112 | relocs = FALSE; |
65f38f15 AM |
10113 | for (s = dynobj->sections; s != NULL; s = s->next) |
10114 | { | |
10115 | if ((s->flags & SEC_LINKER_CREATED) == 0) | |
10116 | continue; | |
10117 | ||
4ce794b7 | 10118 | if (s == htab->brlt || s == htab->relbrlt) |
721956f4 AM |
10119 | /* These haven't been allocated yet; don't strip. */ |
10120 | continue; | |
33e44f2e AM |
10121 | else if (s == htab->elf.sgot |
10122 | || s == htab->elf.splt | |
10123 | || s == htab->elf.iplt | |
2d7ad24e | 10124 | || s == htab->pltlocal |
c456f082 | 10125 | || s == htab->glink |
9e390558 | 10126 | || s == htab->global_entry |
5474d94f AM |
10127 | || s == htab->elf.sdynbss |
10128 | || s == htab->elf.sdynrelro) | |
65f38f15 AM |
10129 | { |
10130 | /* Strip this section if we don't need it; see the | |
10131 | comment below. */ | |
5bd4f169 | 10132 | } |
58d180e8 AM |
10133 | else if (s == htab->glink_eh_frame) |
10134 | { | |
10135 | if (!bfd_is_abs_section (s->output_section)) | |
10136 | /* Not sized yet. */ | |
10137 | continue; | |
10138 | } | |
70cc837d | 10139 | else if (CONST_STRNEQ (s->name, ".rela")) |
5bd4f169 | 10140 | { |
c456f082 | 10141 | if (s->size != 0) |
5bd4f169 | 10142 | { |
33e44f2e | 10143 | if (s != htab->elf.srelplt) |
b34976b6 | 10144 | relocs = TRUE; |
5bd4f169 AM |
10145 | |
10146 | /* We use the reloc_count field as a counter if we need | |
10147 | to copy relocs into the output file. */ | |
10148 | s->reloc_count = 0; | |
10149 | } | |
10150 | } | |
65f38f15 | 10151 | else |
5bd4f169 AM |
10152 | { |
10153 | /* It's not one of our sections, so don't allocate space. */ | |
10154 | continue; | |
10155 | } | |
10156 | ||
eea6121a | 10157 | if (s->size == 0) |
5bd4f169 | 10158 | { |
c456f082 AM |
10159 | /* If we don't need this section, strip it from the |
10160 | output file. This is mostly to handle .rela.bss and | |
10161 | .rela.plt. We must create both sections in | |
10162 | create_dynamic_sections, because they must be created | |
10163 | before the linker maps input sections to output | |
10164 | sections. The linker does that before | |
10165 | adjust_dynamic_symbol is called, and it is that | |
10166 | function which decides whether anything needs to go | |
10167 | into these sections. */ | |
8423293d | 10168 | s->flags |= SEC_EXCLUDE; |
5bd4f169 AM |
10169 | continue; |
10170 | } | |
10171 | ||
06bcf541 AM |
10172 | if (bfd_is_abs_section (s->output_section)) |
10173 | _bfd_error_handler (_("warning: discarding dynamic section %s"), | |
10174 | s->name); | |
10175 | ||
c456f082 | 10176 | if ((s->flags & SEC_HAS_CONTENTS) == 0) |
5f333394 AM |
10177 | continue; |
10178 | ||
65f38f15 AM |
10179 | /* Allocate memory for the section contents. We use bfd_zalloc |
10180 | here in case unused entries are not reclaimed before the | |
10181 | section's contents are written out. This should not happen, | |
411e1bfb AM |
10182 | but this way if it does we get a R_PPC64_NONE reloc in .rela |
10183 | sections instead of garbage. | |
10184 | We also rely on the section contents being zero when writing | |
5474d94f | 10185 | the GOT and .dynrelro. */ |
eea6121a | 10186 | s->contents = bfd_zalloc (dynobj, s->size); |
65f38f15 | 10187 | if (s->contents == NULL) |
b34976b6 | 10188 | return FALSE; |
5bd4f169 AM |
10189 | } |
10190 | ||
c72f2fb2 | 10191 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next) |
e717da7e | 10192 | { |
0c8d6e5c | 10193 | if (!is_ppc64_elf (ibfd)) |
7b53ace3 AM |
10194 | continue; |
10195 | ||
e717da7e | 10196 | s = ppc64_elf_tdata (ibfd)->got; |
33e44f2e | 10197 | if (s != NULL && s != htab->elf.sgot) |
e717da7e | 10198 | { |
eea6121a | 10199 | if (s->size == 0) |
8423293d | 10200 | s->flags |= SEC_EXCLUDE; |
e717da7e AM |
10201 | else |
10202 | { | |
eea6121a | 10203 | s->contents = bfd_zalloc (ibfd, s->size); |
e717da7e AM |
10204 | if (s->contents == NULL) |
10205 | return FALSE; | |
10206 | } | |
10207 | } | |
10208 | s = ppc64_elf_tdata (ibfd)->relgot; | |
10209 | if (s != NULL) | |
10210 | { | |
eea6121a | 10211 | if (s->size == 0) |
8423293d | 10212 | s->flags |= SEC_EXCLUDE; |
e717da7e AM |
10213 | else |
10214 | { | |
eea6121a | 10215 | s->contents = bfd_zalloc (ibfd, s->size); |
e717da7e AM |
10216 | if (s->contents == NULL) |
10217 | return FALSE; | |
10218 | relocs = TRUE; | |
10219 | s->reloc_count = 0; | |
10220 | } | |
10221 | } | |
10222 | } | |
10223 | ||
e86ce104 | 10224 | if (htab->elf.dynamic_sections_created) |
5bd4f169 | 10225 | { |
e8910a83 AM |
10226 | bfd_boolean tls_opt; |
10227 | ||
5bd4f169 AM |
10228 | /* Add some entries to the .dynamic section. We fill in the |
10229 | values later, in ppc64_elf_finish_dynamic_sections, but we | |
10230 | must add the entries now so that we get the correct size for | |
10231 | the .dynamic section. The DT_DEBUG entry is filled in by the | |
10232 | dynamic linker and used by the debugger. */ | |
dc810e39 | 10233 | #define add_dynamic_entry(TAG, VAL) \ |
5a580b3a | 10234 | _bfd_elf_add_dynamic_entry (info, TAG, VAL) |
dc810e39 | 10235 | |
0e1862bb | 10236 | if (bfd_link_executable (info)) |
5bd4f169 | 10237 | { |
dc810e39 | 10238 | if (!add_dynamic_entry (DT_DEBUG, 0)) |
b34976b6 | 10239 | return FALSE; |
5bd4f169 AM |
10240 | } |
10241 | ||
33e44f2e | 10242 | if (htab->elf.splt != NULL && htab->elf.splt->size != 0) |
5bd4f169 | 10243 | { |
dc810e39 AM |
10244 | if (!add_dynamic_entry (DT_PLTGOT, 0) |
10245 | || !add_dynamic_entry (DT_PLTRELSZ, 0) | |
10246 | || !add_dynamic_entry (DT_PLTREL, DT_RELA) | |
5d1634d7 AM |
10247 | || !add_dynamic_entry (DT_JMPREL, 0) |
10248 | || !add_dynamic_entry (DT_PPC64_GLINK, 0)) | |
b34976b6 | 10249 | return FALSE; |
5bd4f169 AM |
10250 | } |
10251 | ||
ee67d69a | 10252 | if (NO_OPD_RELOCS && abiversion (output_bfd) <= 1) |
19397422 AM |
10253 | { |
10254 | if (!add_dynamic_entry (DT_PPC64_OPD, 0) | |
10255 | || !add_dynamic_entry (DT_PPC64_OPDSZ, 0)) | |
b34976b6 | 10256 | return FALSE; |
19397422 AM |
10257 | } |
10258 | ||
7c9cf415 | 10259 | tls_opt = (htab->params->tls_get_addr_opt |
9e7028aa AM |
10260 | && ((htab->tls_get_addr_fd != NULL |
10261 | && htab->tls_get_addr_fd->elf.plt.plist != NULL) | |
10262 | || (htab->tga_desc_fd != NULL | |
10263 | && htab->tga_desc_fd->elf.plt.plist != NULL))); | |
e8910a83 AM |
10264 | if (tls_opt || !htab->opd_abi) |
10265 | { | |
10266 | if (!add_dynamic_entry (DT_PPC64_OPT, tls_opt ? PPC64_OPT_TLS : 0)) | |
10267 | return FALSE; | |
10268 | } | |
a7f2871e | 10269 | |
5bd4f169 AM |
10270 | if (relocs) |
10271 | { | |
dc810e39 AM |
10272 | if (!add_dynamic_entry (DT_RELA, 0) |
10273 | || !add_dynamic_entry (DT_RELASZ, 0) | |
10274 | || !add_dynamic_entry (DT_RELAENT, sizeof (Elf64_External_Rela))) | |
b34976b6 | 10275 | return FALSE; |
5bd4f169 | 10276 | |
65f38f15 AM |
10277 | /* If any dynamic relocs apply to a read-only section, |
10278 | then we need a DT_TEXTREL entry. */ | |
248866a8 | 10279 | if ((info->flags & DF_TEXTREL) == 0) |
d49e5065 L |
10280 | elf_link_hash_traverse (&htab->elf, |
10281 | _bfd_elf_maybe_set_textrel, info); | |
5bd4f169 | 10282 | |
65f38f15 | 10283 | if ((info->flags & DF_TEXTREL) != 0) |
5bd4f169 | 10284 | { |
65f38f15 | 10285 | if (!add_dynamic_entry (DT_TEXTREL, 0)) |
b34976b6 | 10286 | return FALSE; |
5bd4f169 | 10287 | } |
5bd4f169 | 10288 | } |
5bd4f169 | 10289 | } |
65f38f15 | 10290 | #undef add_dynamic_entry |
5bd4f169 | 10291 | |
b34976b6 | 10292 | return TRUE; |
5bd4f169 AM |
10293 | } |
10294 | ||
a345bc8d AM |
10295 | /* Return TRUE if symbol should be hashed in the `.gnu.hash' section. */ |
10296 | ||
10297 | static bfd_boolean | |
10298 | ppc64_elf_hash_symbol (struct elf_link_hash_entry *h) | |
10299 | { | |
10300 | if (h->plt.plist != NULL | |
10301 | && !h->def_regular | |
10302 | && !h->pointer_equality_needed) | |
10303 | return FALSE; | |
10304 | ||
10305 | return _bfd_elf_hash_symbol (h); | |
10306 | } | |
10307 | ||
721956f4 | 10308 | /* Determine the type of stub needed, if any, for a call. */ |
5bd4f169 | 10309 | |
4ce794b7 AM |
10310 | static inline enum ppc_stub_type |
10311 | ppc_type_of_stub (asection *input_sec, | |
10312 | const Elf_Internal_Rela *rel, | |
10313 | struct ppc_link_hash_entry **hash, | |
e054468f | 10314 | struct plt_entry **plt_ent, |
6911b7dc AM |
10315 | bfd_vma destination, |
10316 | unsigned long local_off) | |
5bd4f169 | 10317 | { |
721956f4 AM |
10318 | struct ppc_link_hash_entry *h = *hash; |
10319 | bfd_vma location; | |
10320 | bfd_vma branch_offset; | |
10321 | bfd_vma max_branch_offset; | |
4ce794b7 | 10322 | enum elf_ppc64_reloc_type r_type; |
5bd4f169 | 10323 | |
721956f4 AM |
10324 | if (h != NULL) |
10325 | { | |
e054468f | 10326 | struct plt_entry *ent; |
7fe2b9a6 | 10327 | struct ppc_link_hash_entry *fdh = h; |
b31867b6 AM |
10328 | if (h->oh != NULL |
10329 | && h->oh->is_func_descriptor) | |
7b8f6675 AM |
10330 | { |
10331 | fdh = ppc_follow_link (h->oh); | |
10332 | *hash = fdh; | |
10333 | } | |
8387904d | 10334 | |
e054468f AM |
10335 | for (ent = fdh->elf.plt.plist; ent != NULL; ent = ent->next) |
10336 | if (ent->addend == rel->r_addend | |
10337 | && ent->plt.offset != (bfd_vma) -1) | |
10338 | { | |
e054468f AM |
10339 | *plt_ent = ent; |
10340 | return ppc_stub_plt_call; | |
10341 | } | |
5bd4f169 | 10342 | |
7fe2b9a6 AM |
10343 | /* Here, we know we don't have a plt entry. If we don't have a |
10344 | either a defined function descriptor or a defined entry symbol | |
10345 | in a regular object file, then it is pointless trying to make | |
10346 | any other type of stub. */ | |
854b41e7 AM |
10347 | if (!is_static_defined (&fdh->elf) |
10348 | && !is_static_defined (&h->elf)) | |
721956f4 | 10349 | return ppc_stub_none; |
5d1634d7 | 10350 | } |
e054468f AM |
10351 | else if (elf_local_got_ents (input_sec->owner) != NULL) |
10352 | { | |
10353 | Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (input_sec->owner); | |
10354 | struct plt_entry **local_plt = (struct plt_entry **) | |
10355 | elf_local_got_ents (input_sec->owner) + symtab_hdr->sh_info; | |
10356 | unsigned long r_symndx = ELF64_R_SYM (rel->r_info); | |
10357 | ||
10358 | if (local_plt[r_symndx] != NULL) | |
10359 | { | |
10360 | struct plt_entry *ent; | |
10361 | ||
10362 | for (ent = local_plt[r_symndx]; ent != NULL; ent = ent->next) | |
10363 | if (ent->addend == rel->r_addend | |
10364 | && ent->plt.offset != (bfd_vma) -1) | |
10365 | { | |
10366 | *plt_ent = ent; | |
10367 | return ppc_stub_plt_call; | |
10368 | } | |
10369 | } | |
10370 | } | |
5d1634d7 | 10371 | |
721956f4 AM |
10372 | /* Determine where the call point is. */ |
10373 | location = (input_sec->output_offset | |
10374 | + input_sec->output_section->vma | |
10375 | + rel->r_offset); | |
5d1634d7 | 10376 | |
721956f4 AM |
10377 | branch_offset = destination - location; |
10378 | r_type = ELF64_R_TYPE (rel->r_info); | |
5d1634d7 | 10379 | |
721956f4 AM |
10380 | /* Determine if a long branch stub is needed. */ |
10381 | max_branch_offset = 1 << 25; | |
23cedd1d AM |
10382 | if (r_type == R_PPC64_REL14 |
10383 | || r_type == R_PPC64_REL14_BRTAKEN | |
10384 | || r_type == R_PPC64_REL14_BRNTAKEN) | |
721956f4 | 10385 | max_branch_offset = 1 << 15; |
5d1634d7 | 10386 | |
6911b7dc | 10387 | if (branch_offset + max_branch_offset >= 2 * max_branch_offset - local_off) |
721956f4 AM |
10388 | /* We need a stub. Figure out whether a long_branch or plt_branch |
10389 | is needed later. */ | |
10390 | return ppc_stub_long_branch; | |
5d1634d7 | 10391 | |
721956f4 | 10392 | return ppc_stub_none; |
5d1634d7 AM |
10393 | } |
10394 | ||
f891966f AM |
10395 | /* Gets the address of a label (1:) in r11 and builds an offset in r12, |
10396 | then adds it to r11 (LOAD false) or loads r12 from r11+r12 (LOAD true). | |
10397 | . mflr %r12 | |
10398 | . bcl 20,31,1f | |
10399 | .1: mflr %r11 | |
10400 | . mtlr %r12 | |
05d0e962 | 10401 | . lis %r12,xxx-1b@highest |
f891966f | 10402 | . ori %r12,%r12,xxx-1b@higher |
05d0e962 | 10403 | . sldi %r12,%r12,32 |
f891966f | 10404 | . oris %r12,%r12,xxx-1b@high |
05d0e962 | 10405 | . ori %r12,%r12,xxx-1b@l |
f891966f | 10406 | . add/ldx %r12,%r11,%r12 */ |
05d0e962 AM |
10407 | |
10408 | static bfd_byte * | |
10409 | build_offset (bfd *abfd, bfd_byte *p, bfd_vma off, bfd_boolean load) | |
10410 | { | |
f891966f AM |
10411 | bfd_put_32 (abfd, MFLR_R12, p); |
10412 | p += 4; | |
10413 | bfd_put_32 (abfd, BCL_20_31, p); | |
10414 | p += 4; | |
10415 | bfd_put_32 (abfd, MFLR_R11, p); | |
10416 | p += 4; | |
10417 | bfd_put_32 (abfd, MTLR_R12, p); | |
10418 | p += 4; | |
05d0e962 AM |
10419 | if (off + 0x8000 < 0x10000) |
10420 | { | |
10421 | if (load) | |
10422 | bfd_put_32 (abfd, LD_R12_0R11 + PPC_LO (off), p); | |
10423 | else | |
10424 | bfd_put_32 (abfd, ADDI_R12_R11 + PPC_LO (off), p); | |
10425 | p += 4; | |
10426 | } | |
10427 | else if (off + 0x80008000ULL < 0x100000000ULL) | |
10428 | { | |
10429 | bfd_put_32 (abfd, ADDIS_R12_R11 + PPC_HA (off), p); | |
10430 | p += 4; | |
10431 | if (load) | |
10432 | bfd_put_32 (abfd, LD_R12_0R12 + PPC_LO (off), p); | |
10433 | else | |
10434 | bfd_put_32 (abfd, ADDI_R12_R12 + PPC_LO (off), p); | |
10435 | p += 4; | |
10436 | } | |
10437 | else | |
10438 | { | |
10439 | if (off + 0x800000000000ULL < 0x1000000000000ULL) | |
10440 | { | |
10441 | bfd_put_32 (abfd, LI_R12_0 + ((off >> 32) & 0xffff), p); | |
10442 | p += 4; | |
10443 | } | |
10444 | else | |
10445 | { | |
10446 | bfd_put_32 (abfd, LIS_R12 + ((off >> 48) & 0xffff), p); | |
10447 | p += 4; | |
10448 | if (((off >> 32) & 0xffff) != 0) | |
10449 | { | |
10450 | bfd_put_32 (abfd, ORI_R12_R12_0 + ((off >> 32) & 0xffff), p); | |
10451 | p += 4; | |
10452 | } | |
10453 | } | |
10454 | if (((off >> 32) & 0xffffffffULL) != 0) | |
10455 | { | |
10456 | bfd_put_32 (abfd, SLDI_R12_R12_32, p); | |
10457 | p += 4; | |
10458 | } | |
10459 | if (PPC_HI (off) != 0) | |
10460 | { | |
10461 | bfd_put_32 (abfd, ORIS_R12_R12_0 + PPC_HI (off), p); | |
10462 | p += 4; | |
10463 | } | |
10464 | if (PPC_LO (off) != 0) | |
10465 | { | |
10466 | bfd_put_32 (abfd, ORI_R12_R12_0 + PPC_LO (off), p); | |
10467 | p += 4; | |
10468 | } | |
10469 | if (load) | |
10470 | bfd_put_32 (abfd, LDX_R12_R11_R12, p); | |
10471 | else | |
10472 | bfd_put_32 (abfd, ADD_R12_R11_R12, p); | |
10473 | p += 4; | |
10474 | } | |
10475 | return p; | |
10476 | } | |
10477 | ||
10478 | static unsigned int | |
10479 | size_offset (bfd_vma off) | |
10480 | { | |
10481 | unsigned int size; | |
10482 | if (off + 0x8000 < 0x10000) | |
10483 | size = 4; | |
10484 | else if (off + 0x80008000ULL < 0x100000000ULL) | |
10485 | size = 8; | |
10486 | else | |
10487 | { | |
10488 | if (off + 0x800000000000ULL < 0x1000000000000ULL) | |
10489 | size = 4; | |
10490 | else | |
10491 | { | |
10492 | size = 4; | |
10493 | if (((off >> 32) & 0xffff) != 0) | |
10494 | size += 4; | |
10495 | } | |
10496 | if (((off >> 32) & 0xffffffffULL) != 0) | |
10497 | size += 4; | |
10498 | if (PPC_HI (off) != 0) | |
10499 | size += 4; | |
10500 | if (PPC_LO (off) != 0) | |
10501 | size += 4; | |
10502 | size += 4; | |
10503 | } | |
f891966f | 10504 | return size + 16; |
05d0e962 AM |
10505 | } |
10506 | ||
3d58e1fc AM |
10507 | static unsigned int |
10508 | num_relocs_for_offset (bfd_vma off) | |
10509 | { | |
10510 | unsigned int num_rel; | |
10511 | if (off + 0x8000 < 0x10000) | |
10512 | num_rel = 1; | |
10513 | else if (off + 0x80008000ULL < 0x100000000ULL) | |
10514 | num_rel = 2; | |
10515 | else | |
10516 | { | |
10517 | num_rel = 1; | |
10518 | if (off + 0x800000000000ULL >= 0x1000000000000ULL | |
10519 | && ((off >> 32) & 0xffff) != 0) | |
10520 | num_rel += 1; | |
10521 | if (PPC_HI (off) != 0) | |
10522 | num_rel += 1; | |
10523 | if (PPC_LO (off) != 0) | |
10524 | num_rel += 1; | |
10525 | } | |
10526 | return num_rel; | |
10527 | } | |
10528 | ||
10529 | static Elf_Internal_Rela * | |
10530 | emit_relocs_for_offset (struct bfd_link_info *info, Elf_Internal_Rela *r, | |
10531 | bfd_vma roff, bfd_vma targ, bfd_vma off) | |
10532 | { | |
10533 | bfd_vma relative_targ = targ - (roff - 8); | |
10534 | if (bfd_big_endian (info->output_bfd)) | |
10535 | roff += 2; | |
10536 | r->r_offset = roff; | |
10537 | r->r_addend = relative_targ + roff; | |
10538 | if (off + 0x8000 < 0x10000) | |
10539 | r->r_info = ELF64_R_INFO (0, R_PPC64_REL16); | |
10540 | else if (off + 0x80008000ULL < 0x100000000ULL) | |
10541 | { | |
10542 | r->r_info = ELF64_R_INFO (0, R_PPC64_REL16_HA); | |
10543 | ++r; | |
10544 | roff += 4; | |
10545 | r->r_offset = roff; | |
10546 | r->r_info = ELF64_R_INFO (0, R_PPC64_REL16_LO); | |
10547 | r->r_addend = relative_targ + roff; | |
10548 | } | |
10549 | else | |
10550 | { | |
10551 | if (off + 0x800000000000ULL < 0x1000000000000ULL) | |
10552 | r->r_info = ELF64_R_INFO (0, R_PPC64_REL16_HIGHER); | |
10553 | else | |
10554 | { | |
10555 | r->r_info = ELF64_R_INFO (0, R_PPC64_REL16_HIGHEST); | |
10556 | if (((off >> 32) & 0xffff) != 0) | |
10557 | { | |
10558 | ++r; | |
10559 | roff += 4; | |
10560 | r->r_offset = roff; | |
10561 | r->r_info = ELF64_R_INFO (0, R_PPC64_REL16_HIGHER); | |
10562 | r->r_addend = relative_targ + roff; | |
10563 | } | |
10564 | } | |
10565 | if (((off >> 32) & 0xffffffffULL) != 0) | |
10566 | roff += 4; | |
10567 | if (PPC_HI (off) != 0) | |
10568 | { | |
10569 | ++r; | |
10570 | roff += 4; | |
10571 | r->r_offset = roff; | |
10572 | r->r_info = ELF64_R_INFO (0, R_PPC64_REL16_HIGH); | |
10573 | r->r_addend = relative_targ + roff; | |
10574 | } | |
10575 | if (PPC_LO (off) != 0) | |
10576 | { | |
10577 | ++r; | |
10578 | roff += 4; | |
10579 | r->r_offset = roff; | |
10580 | r->r_info = ELF64_R_INFO (0, R_PPC64_REL16_LO); | |
10581 | r->r_addend = relative_targ + roff; | |
10582 | } | |
10583 | } | |
10584 | return r; | |
10585 | } | |
10586 | ||
04bdff6a | 10587 | static bfd_byte * |
7c1f4227 | 10588 | build_power10_offset (bfd *abfd, bfd_byte *p, bfd_vma off, int odd, |
04bdff6a AM |
10589 | bfd_boolean load) |
10590 | { | |
10591 | uint64_t insn; | |
10592 | if (off - odd + (1ULL << 33) < 1ULL << 34) | |
10593 | { | |
10594 | off -= odd; | |
10595 | if (odd) | |
10596 | { | |
10597 | bfd_put_32 (abfd, NOP, p); | |
10598 | p += 4; | |
10599 | } | |
10600 | if (load) | |
10601 | insn = PLD_R12_PC; | |
10602 | else | |
10603 | insn = PADDI_R12_PC; | |
10604 | insn |= D34 (off); | |
10605 | bfd_put_32 (abfd, insn >> 32, p); | |
10606 | p += 4; | |
10607 | bfd_put_32 (abfd, insn, p); | |
10608 | } | |
10609 | /* The minimum value for paddi is -0x200000000. The minimum value | |
10610 | for li is -0x8000, which when shifted by 34 and added gives a | |
10611 | minimum value of -0x2000200000000. The maximum value is | |
10612 | 0x1ffffffff+0x7fff<<34 which is 0x2000200000000-1. */ | |
10613 | else if (off - (8 - odd) + (0x20002ULL << 32) < 0x40004ULL << 32) | |
10614 | { | |
10615 | off -= 8 - odd; | |
10616 | bfd_put_32 (abfd, LI_R11_0 | (HA34 (off) & 0xffff), p); | |
10617 | p += 4; | |
10618 | if (!odd) | |
10619 | { | |
10620 | bfd_put_32 (abfd, SLDI_R11_R11_34, p); | |
10621 | p += 4; | |
10622 | } | |
10623 | insn = PADDI_R12_PC | D34 (off); | |
10624 | bfd_put_32 (abfd, insn >> 32, p); | |
10625 | p += 4; | |
10626 | bfd_put_32 (abfd, insn, p); | |
10627 | p += 4; | |
10628 | if (odd) | |
10629 | { | |
10630 | bfd_put_32 (abfd, SLDI_R11_R11_34, p); | |
10631 | p += 4; | |
10632 | } | |
10633 | if (load) | |
10634 | bfd_put_32 (abfd, LDX_R12_R11_R12, p); | |
10635 | else | |
10636 | bfd_put_32 (abfd, ADD_R12_R11_R12, p); | |
10637 | } | |
10638 | else | |
10639 | { | |
10640 | off -= odd + 8; | |
10641 | bfd_put_32 (abfd, LIS_R11 | ((HA34 (off) >> 16) & 0x3fff), p); | |
10642 | p += 4; | |
10643 | bfd_put_32 (abfd, ORI_R11_R11_0 | (HA34 (off) & 0xffff), p); | |
10644 | p += 4; | |
10645 | if (odd) | |
10646 | { | |
10647 | bfd_put_32 (abfd, SLDI_R11_R11_34, p); | |
10648 | p += 4; | |
10649 | } | |
10650 | insn = PADDI_R12_PC | D34 (off); | |
10651 | bfd_put_32 (abfd, insn >> 32, p); | |
10652 | p += 4; | |
10653 | bfd_put_32 (abfd, insn, p); | |
10654 | p += 4; | |
10655 | if (!odd) | |
10656 | { | |
10657 | bfd_put_32 (abfd, SLDI_R11_R11_34, p); | |
10658 | p += 4; | |
10659 | } | |
10660 | if (load) | |
10661 | bfd_put_32 (abfd, LDX_R12_R11_R12, p); | |
10662 | else | |
10663 | bfd_put_32 (abfd, ADD_R12_R11_R12, p); | |
10664 | } | |
10665 | p += 4; | |
10666 | return p; | |
10667 | } | |
10668 | ||
10669 | static unsigned int | |
7c1f4227 | 10670 | size_power10_offset (bfd_vma off, int odd) |
04bdff6a AM |
10671 | { |
10672 | if (off - odd + (1ULL << 33) < 1ULL << 34) | |
10673 | return odd + 8; | |
10674 | else if (off - (8 - odd) + (0x20002ULL << 32) < 0x40004ULL << 32) | |
10675 | return 20; | |
10676 | else | |
10677 | return 24; | |
10678 | } | |
10679 | ||
10680 | static unsigned int | |
7c1f4227 | 10681 | num_relocs_for_power10_offset (bfd_vma off, int odd) |
04bdff6a AM |
10682 | { |
10683 | if (off - odd + (1ULL << 33) < 1ULL << 34) | |
10684 | return 1; | |
10685 | else if (off - (8 - odd) + (0x20002ULL << 32) < 0x40004ULL << 32) | |
10686 | return 2; | |
10687 | else | |
10688 | return 3; | |
10689 | } | |
10690 | ||
10691 | static Elf_Internal_Rela * | |
7c1f4227 | 10692 | emit_relocs_for_power10_offset (struct bfd_link_info *info, |
04bdff6a AM |
10693 | Elf_Internal_Rela *r, bfd_vma roff, |
10694 | bfd_vma targ, bfd_vma off, int odd) | |
10695 | { | |
10696 | if (off - odd + (1ULL << 33) < 1ULL << 34) | |
10697 | roff += odd; | |
10698 | else if (off - (8 - odd) + (0x20002ULL << 32) < 0x40004ULL << 32) | |
10699 | { | |
10700 | int d_offset = bfd_big_endian (info->output_bfd) ? 2 : 0; | |
10701 | r->r_offset = roff + d_offset; | |
10702 | r->r_addend = targ + 8 - odd - d_offset; | |
10703 | r->r_info = ELF64_R_INFO (0, R_PPC64_REL16_HIGHERA34); | |
10704 | ++r; | |
10705 | roff += 8 - odd; | |
10706 | } | |
10707 | else | |
10708 | { | |
10709 | int d_offset = bfd_big_endian (info->output_bfd) ? 2 : 0; | |
10710 | r->r_offset = roff + d_offset; | |
10711 | r->r_addend = targ + 8 + odd - d_offset; | |
10712 | r->r_info = ELF64_R_INFO (0, R_PPC64_REL16_HIGHESTA34); | |
10713 | ++r; | |
10714 | roff += 4; | |
10715 | r->r_offset = roff + d_offset; | |
10716 | r->r_addend = targ + 4 + odd - d_offset; | |
10717 | r->r_info = ELF64_R_INFO (0, R_PPC64_REL16_HIGHERA34); | |
10718 | ++r; | |
10719 | roff += 4 + odd; | |
10720 | } | |
10721 | r->r_offset = roff; | |
10722 | r->r_addend = targ; | |
10723 | r->r_info = ELF64_R_INFO (0, R_PPC64_PCREL34); | |
10724 | return r; | |
10725 | } | |
10726 | ||
df136d64 AM |
10727 | /* Emit .eh_frame opcode to advance pc by DELTA. */ |
10728 | ||
10729 | static bfd_byte * | |
10730 | eh_advance (bfd *abfd, bfd_byte *eh, unsigned int delta) | |
10731 | { | |
10732 | delta /= 4; | |
10733 | if (delta < 64) | |
10734 | *eh++ = DW_CFA_advance_loc + delta; | |
10735 | else if (delta < 256) | |
10736 | { | |
10737 | *eh++ = DW_CFA_advance_loc1; | |
10738 | *eh++ = delta; | |
10739 | } | |
10740 | else if (delta < 65536) | |
10741 | { | |
10742 | *eh++ = DW_CFA_advance_loc2; | |
10743 | bfd_put_16 (abfd, delta, eh); | |
10744 | eh += 2; | |
10745 | } | |
10746 | else | |
10747 | { | |
10748 | *eh++ = DW_CFA_advance_loc4; | |
10749 | bfd_put_32 (abfd, delta, eh); | |
10750 | eh += 4; | |
10751 | } | |
10752 | return eh; | |
10753 | } | |
10754 | ||
10755 | /* Size of required .eh_frame opcode to advance pc by DELTA. */ | |
10756 | ||
10757 | static unsigned int | |
10758 | eh_advance_size (unsigned int delta) | |
10759 | { | |
10760 | if (delta < 64 * 4) | |
10761 | /* DW_CFA_advance_loc+[1..63]. */ | |
10762 | return 1; | |
10763 | if (delta < 256 * 4) | |
10764 | /* DW_CFA_advance_loc1, byte. */ | |
10765 | return 2; | |
10766 | if (delta < 65536 * 4) | |
10767 | /* DW_CFA_advance_loc2, 2 bytes. */ | |
10768 | return 3; | |
10769 | /* DW_CFA_advance_loc4, 4 bytes. */ | |
10770 | return 5; | |
10771 | } | |
10772 | ||
794e51c0 AM |
10773 | /* With power7 weakly ordered memory model, it is possible for ld.so |
10774 | to update a plt entry in one thread and have another thread see a | |
10775 | stale zero toc entry. To avoid this we need some sort of acquire | |
10776 | barrier in the call stub. One solution is to make the load of the | |
10777 | toc word seem to appear to depend on the load of the function entry | |
10778 | word. Another solution is to test for r2 being zero, and branch to | |
10779 | the appropriate glink entry if so. | |
10780 | ||
10781 | . fake dep barrier compare | |
71a39c98 AM |
10782 | . ld 12,xxx(2) ld 12,xxx(2) |
10783 | . mtctr 12 mtctr 12 | |
10784 | . xor 11,12,12 ld 2,xxx+8(2) | |
794e51c0 AM |
10785 | . add 2,2,11 cmpldi 2,0 |
10786 | . ld 2,xxx+8(2) bnectr+ | |
10787 | . bctr b <glink_entry> | |
10788 | ||
10789 | The solution involving the compare turns out to be faster, so | |
10790 | that's what we use unless the branch won't reach. */ | |
10791 | ||
10792 | #define ALWAYS_USE_FAKE_DEP 0 | |
10793 | #define ALWAYS_EMIT_R2SAVE 0 | |
5d1634d7 | 10794 | |
794e51c0 AM |
10795 | static inline unsigned int |
10796 | plt_stub_size (struct ppc_link_hash_table *htab, | |
10797 | struct ppc_stub_hash_entry *stub_entry, | |
10798 | bfd_vma off) | |
10799 | { | |
05d0e962 | 10800 | unsigned size; |
b9e5796b | 10801 | |
05d0e962 AM |
10802 | if (stub_entry->stub_type >= ppc_stub_plt_call_notoc) |
10803 | { | |
d349c8e2 | 10804 | if (htab->params->power10_stubs != 0) |
04bdff6a AM |
10805 | { |
10806 | bfd_vma start = (stub_entry->stub_offset | |
10807 | + stub_entry->group->stub_sec->output_offset | |
10808 | + stub_entry->group->stub_sec->output_section->vma); | |
10809 | if (stub_entry->stub_type > ppc_stub_plt_call_notoc) | |
10810 | start += 4; | |
7c1f4227 | 10811 | size = 8 + size_power10_offset (off, start & 4); |
04bdff6a AM |
10812 | } |
10813 | else | |
10814 | size = 8 + size_offset (off - 8); | |
05d0e962 AM |
10815 | if (stub_entry->stub_type > ppc_stub_plt_call_notoc) |
10816 | size += 4; | |
10817 | return size; | |
10818 | } | |
10819 | ||
10820 | size = 12; | |
b9e5796b AM |
10821 | if (ALWAYS_EMIT_R2SAVE |
10822 | || stub_entry->stub_type == ppc_stub_plt_call_r2save) | |
10823 | size += 4; | |
10824 | if (PPC_HA (off) != 0) | |
794e51c0 | 10825 | size += 4; |
b9e5796b AM |
10826 | if (htab->opd_abi) |
10827 | { | |
10828 | size += 4; | |
e7d1c40c | 10829 | if (htab->params->plt_static_chain) |
b9e5796b | 10830 | size += 4; |
bd4d2eaa AM |
10831 | if (htab->params->plt_thread_safe |
10832 | && htab->elf.dynamic_sections_created | |
10833 | && stub_entry->h != NULL | |
10834 | && stub_entry->h->elf.dynindx != -1) | |
b9e5796b | 10835 | size += 8; |
e7d1c40c | 10836 | if (PPC_HA (off + 8 + 8 * htab->params->plt_static_chain) != PPC_HA (off)) |
b9e5796b AM |
10837 | size += 4; |
10838 | } | |
794e51c0 | 10839 | if (stub_entry->h != NULL |
ed7007c1 | 10840 | && is_tls_get_addr (&stub_entry->h->elf, htab) |
7c9cf415 | 10841 | && htab->params->tls_get_addr_opt) |
f378ab09 | 10842 | { |
9e7028aa AM |
10843 | if (htab->params->no_tls_get_addr_regsave) |
10844 | { | |
10845 | size += 7 * 4; | |
10846 | if (stub_entry->stub_type == ppc_stub_plt_call_r2save) | |
10847 | size += 6 * 4; | |
10848 | } | |
10849 | else | |
10850 | { | |
10851 | size += 30 * 4; | |
10852 | if (stub_entry->stub_type == ppc_stub_plt_call_r2save) | |
10853 | size += 4; | |
10854 | } | |
f378ab09 | 10855 | } |
794e51c0 AM |
10856 | return size; |
10857 | } | |
10858 | ||
2420fff6 AM |
10859 | /* Depending on the sign of plt_stub_align: |
10860 | If positive, return the padding to align to a 2**plt_stub_align | |
10861 | boundary. | |
10862 | If negative, if this stub would cross fewer 2**plt_stub_align | |
10863 | boundaries if we align, then return the padding needed to do so. */ | |
10864 | ||
794e51c0 AM |
10865 | static inline unsigned int |
10866 | plt_stub_pad (struct ppc_link_hash_table *htab, | |
10867 | struct ppc_stub_hash_entry *stub_entry, | |
10868 | bfd_vma plt_off) | |
10869 | { | |
2420fff6 | 10870 | int stub_align; |
1aa42141 | 10871 | unsigned stub_size; |
6f20ed8a | 10872 | bfd_vma stub_off = stub_entry->group->stub_sec->size; |
794e51c0 | 10873 | |
2420fff6 AM |
10874 | if (htab->params->plt_stub_align >= 0) |
10875 | { | |
10876 | stub_align = 1 << htab->params->plt_stub_align; | |
10877 | if ((stub_off & (stub_align - 1)) != 0) | |
10878 | return stub_align - (stub_off & (stub_align - 1)); | |
10879 | return 0; | |
10880 | } | |
10881 | ||
10882 | stub_align = 1 << -htab->params->plt_stub_align; | |
1aa42141 | 10883 | stub_size = plt_stub_size (htab, stub_entry, plt_off); |
794e51c0 | 10884 | if (((stub_off + stub_size - 1) & -stub_align) - (stub_off & -stub_align) |
e05fa0ba | 10885 | > ((stub_size - 1) & -stub_align)) |
794e51c0 AM |
10886 | return stub_align - (stub_off & (stub_align - 1)); |
10887 | return 0; | |
10888 | } | |
10889 | ||
10890 | /* Build a .plt call stub. */ | |
10891 | ||
10892 | static inline bfd_byte * | |
10893 | build_plt_stub (struct ppc_link_hash_table *htab, | |
10894 | struct ppc_stub_hash_entry *stub_entry, | |
10895 | bfd_byte *p, bfd_vma offset, Elf_Internal_Rela *r) | |
10896 | { | |
e7d1c40c | 10897 | bfd *obfd = htab->params->stub_bfd; |
b9e5796b | 10898 | bfd_boolean plt_load_toc = htab->opd_abi; |
e7d1c40c | 10899 | bfd_boolean plt_static_chain = htab->params->plt_static_chain; |
bd4d2eaa AM |
10900 | bfd_boolean plt_thread_safe = (htab->params->plt_thread_safe |
10901 | && htab->elf.dynamic_sections_created | |
10902 | && stub_entry->h != NULL | |
10903 | && stub_entry->h->elf.dynindx != -1); | |
794e51c0 AM |
10904 | bfd_boolean use_fake_dep = plt_thread_safe; |
10905 | bfd_vma cmp_branch_off = 0; | |
10906 | ||
10907 | if (!ALWAYS_USE_FAKE_DEP | |
b9e5796b | 10908 | && plt_load_toc |
794e51c0 | 10909 | && plt_thread_safe |
ed7007c1 | 10910 | && !(is_tls_get_addr (&stub_entry->h->elf, htab) |
7c9cf415 | 10911 | && htab->params->tls_get_addr_opt)) |
794e51c0 AM |
10912 | { |
10913 | bfd_vma pltoff = stub_entry->plt_ent->plt.offset & ~1; | |
b9e5796b AM |
10914 | bfd_vma pltindex = ((pltoff - PLT_INITIAL_ENTRY_SIZE (htab)) |
10915 | / PLT_ENTRY_SIZE (htab)); | |
9e390558 | 10916 | bfd_vma glinkoff = GLINK_PLTRESOLVE_SIZE (htab) + pltindex * 8; |
794e51c0 AM |
10917 | bfd_vma to, from; |
10918 | ||
68d62958 AM |
10919 | if (pltindex > 32768) |
10920 | glinkoff += (pltindex - 32768) * 4; | |
794e51c0 AM |
10921 | to = (glinkoff |
10922 | + htab->glink->output_offset | |
10923 | + htab->glink->output_section->vma); | |
6f20ed8a | 10924 | from = (p - stub_entry->group->stub_sec->contents |
794e51c0 AM |
10925 | + 4 * (ALWAYS_EMIT_R2SAVE |
10926 | || stub_entry->stub_type == ppc_stub_plt_call_r2save) | |
10927 | + 4 * (PPC_HA (offset) != 0) | |
10928 | + 4 * (PPC_HA (offset + 8 + 8 * plt_static_chain) | |
10929 | != PPC_HA (offset)) | |
10930 | + 4 * (plt_static_chain != 0) | |
10931 | + 20 | |
6f20ed8a AM |
10932 | + stub_entry->group->stub_sec->output_offset |
10933 | + stub_entry->group->stub_sec->output_section->vma); | |
794e51c0 AM |
10934 | cmp_branch_off = to - from; |
10935 | use_fake_dep = cmp_branch_off + (1 << 25) >= (1 << 26); | |
10936 | } | |
10937 | ||
ac2df442 AM |
10938 | if (PPC_HA (offset) != 0) |
10939 | { | |
176a0d42 AM |
10940 | if (r != NULL) |
10941 | { | |
794e51c0 AM |
10942 | if (ALWAYS_EMIT_R2SAVE |
10943 | || stub_entry->stub_type == ppc_stub_plt_call_r2save) | |
10944 | r[0].r_offset += 4; | |
176a0d42 | 10945 | r[0].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_HA); |
3b421ab3 | 10946 | r[1].r_offset = r[0].r_offset + 4; |
176a0d42 AM |
10947 | r[1].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS); |
10948 | r[1].r_addend = r[0].r_addend; | |
b9e5796b | 10949 | if (plt_load_toc) |
176a0d42 | 10950 | { |
b9e5796b | 10951 | if (PPC_HA (offset + 8 + 8 * plt_static_chain) != PPC_HA (offset)) |
c7131b65 | 10952 | { |
b9e5796b AM |
10953 | r[2].r_offset = r[1].r_offset + 4; |
10954 | r[2].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_LO); | |
10955 | r[2].r_addend = r[0].r_addend; | |
10956 | } | |
10957 | else | |
10958 | { | |
10959 | r[2].r_offset = r[1].r_offset + 8 + 8 * use_fake_dep; | |
10960 | r[2].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS); | |
10961 | r[2].r_addend = r[0].r_addend + 8; | |
10962 | if (plt_static_chain) | |
10963 | { | |
10964 | r[3].r_offset = r[2].r_offset + 4; | |
10965 | r[3].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS); | |
10966 | r[3].r_addend = r[0].r_addend + 16; | |
10967 | } | |
c7131b65 | 10968 | } |
176a0d42 AM |
10969 | } |
10970 | } | |
794e51c0 AM |
10971 | if (ALWAYS_EMIT_R2SAVE |
10972 | || stub_entry->stub_type == ppc_stub_plt_call_r2save) | |
a078d95a | 10973 | bfd_put_32 (obfd, STD_R2_0R1 + STK_TOC (htab), p), p += 4; |
397998fc AM |
10974 | if (plt_load_toc) |
10975 | { | |
10976 | bfd_put_32 (obfd, ADDIS_R11_R2 | PPC_HA (offset), p), p += 4; | |
10977 | bfd_put_32 (obfd, LD_R12_0R11 | PPC_LO (offset), p), p += 4; | |
10978 | } | |
10979 | else | |
10980 | { | |
10981 | bfd_put_32 (obfd, ADDIS_R12_R2 | PPC_HA (offset), p), p += 4; | |
10982 | bfd_put_32 (obfd, LD_R12_0R12 | PPC_LO (offset), p), p += 4; | |
10983 | } | |
b9e5796b AM |
10984 | if (plt_load_toc |
10985 | && PPC_HA (offset + 8 + 8 * plt_static_chain) != PPC_HA (offset)) | |
ac2df442 | 10986 | { |
71a39c98 | 10987 | bfd_put_32 (obfd, ADDI_R11_R11 | PPC_LO (offset), p), p += 4; |
ac2df442 AM |
10988 | offset = 0; |
10989 | } | |
71a39c98 | 10990 | bfd_put_32 (obfd, MTCTR_R12, p), p += 4; |
b9e5796b | 10991 | if (plt_load_toc) |
794e51c0 | 10992 | { |
b9e5796b AM |
10993 | if (use_fake_dep) |
10994 | { | |
10995 | bfd_put_32 (obfd, XOR_R2_R12_R12, p), p += 4; | |
10996 | bfd_put_32 (obfd, ADD_R11_R11_R2, p), p += 4; | |
10997 | } | |
10998 | bfd_put_32 (obfd, LD_R2_0R11 | PPC_LO (offset + 8), p), p += 4; | |
10999 | if (plt_static_chain) | |
11000 | bfd_put_32 (obfd, LD_R11_0R11 | PPC_LO (offset + 16), p), p += 4; | |
794e51c0 | 11001 | } |
ac2df442 AM |
11002 | } |
11003 | else | |
11004 | { | |
176a0d42 AM |
11005 | if (r != NULL) |
11006 | { | |
794e51c0 AM |
11007 | if (ALWAYS_EMIT_R2SAVE |
11008 | || stub_entry->stub_type == ppc_stub_plt_call_r2save) | |
11009 | r[0].r_offset += 4; | |
176a0d42 | 11010 | r[0].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_DS); |
b9e5796b | 11011 | if (plt_load_toc) |
176a0d42 | 11012 | { |
b9e5796b | 11013 | if (PPC_HA (offset + 8 + 8 * plt_static_chain) != PPC_HA (offset)) |
c7131b65 | 11014 | { |
b9e5796b AM |
11015 | r[1].r_offset = r[0].r_offset + 4; |
11016 | r[1].r_info = ELF64_R_INFO (0, R_PPC64_TOC16); | |
11017 | r[1].r_addend = r[0].r_addend; | |
11018 | } | |
11019 | else | |
11020 | { | |
11021 | r[1].r_offset = r[0].r_offset + 8 + 8 * use_fake_dep; | |
11022 | r[1].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_DS); | |
11023 | r[1].r_addend = r[0].r_addend + 8 + 8 * plt_static_chain; | |
11024 | if (plt_static_chain) | |
11025 | { | |
11026 | r[2].r_offset = r[1].r_offset + 4; | |
11027 | r[2].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_DS); | |
11028 | r[2].r_addend = r[0].r_addend + 8; | |
11029 | } | |
c7131b65 | 11030 | } |
176a0d42 AM |
11031 | } |
11032 | } | |
794e51c0 AM |
11033 | if (ALWAYS_EMIT_R2SAVE |
11034 | || stub_entry->stub_type == ppc_stub_plt_call_r2save) | |
a078d95a | 11035 | bfd_put_32 (obfd, STD_R2_0R1 + STK_TOC (htab), p), p += 4; |
71a39c98 | 11036 | bfd_put_32 (obfd, LD_R12_0R2 | PPC_LO (offset), p), p += 4; |
b9e5796b AM |
11037 | if (plt_load_toc |
11038 | && PPC_HA (offset + 8 + 8 * plt_static_chain) != PPC_HA (offset)) | |
ac2df442 AM |
11039 | { |
11040 | bfd_put_32 (obfd, ADDI_R2_R2 | PPC_LO (offset), p), p += 4; | |
11041 | offset = 0; | |
11042 | } | |
71a39c98 | 11043 | bfd_put_32 (obfd, MTCTR_R12, p), p += 4; |
b9e5796b | 11044 | if (plt_load_toc) |
794e51c0 | 11045 | { |
b9e5796b AM |
11046 | if (use_fake_dep) |
11047 | { | |
11048 | bfd_put_32 (obfd, XOR_R11_R12_R12, p), p += 4; | |
11049 | bfd_put_32 (obfd, ADD_R2_R2_R11, p), p += 4; | |
11050 | } | |
11051 | if (plt_static_chain) | |
11052 | bfd_put_32 (obfd, LD_R11_0R2 | PPC_LO (offset + 16), p), p += 4; | |
11053 | bfd_put_32 (obfd, LD_R2_0R2 | PPC_LO (offset + 8), p), p += 4; | |
794e51c0 | 11054 | } |
ac2df442 | 11055 | } |
b9e5796b | 11056 | if (plt_load_toc && plt_thread_safe && !use_fake_dep) |
794e51c0 AM |
11057 | { |
11058 | bfd_put_32 (obfd, CMPLDI_R2_0, p), p += 4; | |
11059 | bfd_put_32 (obfd, BNECTR_P4, p), p += 4; | |
22aa0c7e | 11060 | bfd_put_32 (obfd, B_DOT | (cmp_branch_off & 0x3fffffc), p), p += 4; |
794e51c0 AM |
11061 | } |
11062 | else | |
407aa07c | 11063 | bfd_put_32 (obfd, BCTR, p), p += 4; |
5d1634d7 AM |
11064 | return p; |
11065 | } | |
11066 | ||
a7f2871e AM |
11067 | /* Build a special .plt call stub for __tls_get_addr. */ |
11068 | ||
b9ca1af6 | 11069 | #define LD_R0_0R3 0xe8030000 |
a7f2871e AM |
11070 | #define LD_R12_0R3 0xe9830000 |
11071 | #define MR_R0_R3 0x7c601b78 | |
b9ca1af6 | 11072 | #define CMPDI_R0_0 0x2c200000 |
a7f2871e AM |
11073 | #define ADD_R3_R12_R13 0x7c6c6a14 |
11074 | #define BEQLR 0x4d820020 | |
11075 | #define MR_R3_R0 0x7c030378 | |
a7f2871e | 11076 | #define BCTRL 0x4e800421 |
a7f2871e AM |
11077 | |
11078 | static inline bfd_byte * | |
794e51c0 AM |
11079 | build_tls_get_addr_stub (struct ppc_link_hash_table *htab, |
11080 | struct ppc_stub_hash_entry *stub_entry, | |
11081 | bfd_byte *p, bfd_vma offset, Elf_Internal_Rela *r) | |
a7f2871e | 11082 | { |
e7d1c40c | 11083 | bfd *obfd = htab->params->stub_bfd; |
df136d64 | 11084 | bfd_byte *loc = p; |
9e7028aa | 11085 | unsigned int i; |
794e51c0 | 11086 | |
b9ca1af6 | 11087 | bfd_put_32 (obfd, LD_R0_0R3 + 0, p), p += 4; |
a7f2871e | 11088 | bfd_put_32 (obfd, LD_R12_0R3 + 8, p), p += 4; |
b9ca1af6 | 11089 | bfd_put_32 (obfd, CMPDI_R0_0, p), p += 4; |
a7f2871e | 11090 | bfd_put_32 (obfd, MR_R0_R3, p), p += 4; |
a7f2871e AM |
11091 | bfd_put_32 (obfd, ADD_R3_R12_R13, p), p += 4; |
11092 | bfd_put_32 (obfd, BEQLR, p), p += 4; | |
11093 | bfd_put_32 (obfd, MR_R3_R0, p), p += 4; | |
9e7028aa AM |
11094 | if (htab->params->no_tls_get_addr_regsave) |
11095 | { | |
11096 | if (r != NULL) | |
11097 | r[0].r_offset += 7 * 4; | |
11098 | if (stub_entry->stub_type != ppc_stub_plt_call_r2save) | |
11099 | return build_plt_stub (htab, stub_entry, p, offset, r); | |
11100 | ||
11101 | bfd_put_32 (obfd, MFLR_R0, p); | |
11102 | p += 4; | |
11103 | bfd_put_32 (obfd, STD_R0_0R1 + STK_LINKER (htab), p); | |
11104 | p += 4; | |
11105 | ||
11106 | if (r != NULL) | |
11107 | r[0].r_offset += 2 * 4; | |
11108 | p = build_plt_stub (htab, stub_entry, p, offset, r); | |
11109 | bfd_put_32 (obfd, BCTRL, p - 4); | |
11110 | ||
11111 | bfd_put_32 (obfd, LD_R2_0R1 + STK_TOC (htab), p); | |
11112 | p += 4; | |
11113 | bfd_put_32 (obfd, LD_R0_0R1 + STK_LINKER (htab), p); | |
11114 | p += 4; | |
11115 | bfd_put_32 (obfd, MTLR_R0, p); | |
11116 | p += 4; | |
11117 | bfd_put_32 (obfd, BLR, p); | |
11118 | p += 4; | |
11119 | } | |
11120 | else | |
11121 | { | |
11122 | p = tls_get_addr_prologue (obfd, p, htab); | |
f378ab09 | 11123 | |
9e7028aa AM |
11124 | if (r != NULL) |
11125 | r[0].r_offset += 18 * 4; | |
a7f2871e | 11126 | |
9e7028aa AM |
11127 | p = build_plt_stub (htab, stub_entry, p, offset, r); |
11128 | bfd_put_32 (obfd, BCTRL, p - 4); | |
11129 | ||
11130 | if (stub_entry->stub_type == ppc_stub_plt_call_r2save) | |
11131 | { | |
11132 | bfd_put_32 (obfd, LD_R2_0R1 + STK_TOC (htab), p); | |
11133 | p += 4; | |
11134 | } | |
a7f2871e | 11135 | |
9e7028aa AM |
11136 | p = tls_get_addr_epilogue (obfd, p, htab); |
11137 | } | |
a7f2871e | 11138 | |
df136d64 AM |
11139 | if (htab->glink_eh_frame != NULL |
11140 | && htab->glink_eh_frame->size != 0) | |
11141 | { | |
11142 | bfd_byte *base, *eh; | |
df136d64 AM |
11143 | |
11144 | base = htab->glink_eh_frame->contents + stub_entry->group->eh_base + 17; | |
11145 | eh = base + stub_entry->group->eh_size; | |
9e7028aa AM |
11146 | if (htab->params->no_tls_get_addr_regsave) |
11147 | { | |
11148 | unsigned int lr_used, delta; | |
11149 | lr_used = stub_entry->stub_offset + (p - 20 - loc); | |
11150 | delta = lr_used - stub_entry->group->lr_restore; | |
11151 | stub_entry->group->lr_restore = lr_used + 16; | |
11152 | eh = eh_advance (htab->elf.dynobj, eh, delta); | |
11153 | *eh++ = DW_CFA_offset_extended_sf; | |
11154 | *eh++ = 65; | |
11155 | *eh++ = -(STK_LINKER (htab) / 8) & 0x7f; | |
11156 | *eh++ = DW_CFA_advance_loc + 4; | |
11157 | } | |
11158 | else | |
11159 | { | |
11160 | unsigned int cfa_updt, delta; | |
11161 | /* After the bctrl, lr has been modified so we need to emit | |
11162 | .eh_frame info saying the return address is on the stack. In | |
11163 | fact we must put the EH info at or before the call rather | |
11164 | than after it, because the EH info for a call needs to be | |
11165 | specified by that point. | |
11166 | See libgcc/unwind-dw2.c execute_cfa_program. | |
11167 | Any stack pointer update must be described immediately after | |
11168 | the instruction making the change, and since the stdu occurs | |
11169 | after saving regs we put all the reg saves and the cfa | |
11170 | change there. */ | |
11171 | cfa_updt = stub_entry->stub_offset + 18 * 4; | |
11172 | delta = cfa_updt - stub_entry->group->lr_restore; | |
11173 | stub_entry->group->lr_restore | |
11174 | = stub_entry->stub_offset + (p - loc) - 4; | |
11175 | eh = eh_advance (htab->elf.dynobj, eh, delta); | |
11176 | *eh++ = DW_CFA_def_cfa_offset; | |
11177 | if (htab->opd_abi) | |
11178 | { | |
11179 | *eh++ = 128; | |
11180 | *eh++ = 1; | |
11181 | } | |
11182 | else | |
11183 | *eh++ = 96; | |
11184 | *eh++ = DW_CFA_offset_extended_sf; | |
11185 | *eh++ = 65; | |
11186 | *eh++ = (-16 / 8) & 0x7f; | |
11187 | for (i = 4; i < 12; i++) | |
11188 | { | |
11189 | *eh++ = DW_CFA_offset + i; | |
11190 | *eh++ = (htab->opd_abi ? 13 : 12) - i; | |
11191 | } | |
11192 | *eh++ = (DW_CFA_advance_loc | |
11193 | + (stub_entry->group->lr_restore - 8 - cfa_updt) / 4); | |
11194 | *eh++ = DW_CFA_def_cfa_offset; | |
11195 | *eh++ = 0; | |
11196 | for (i = 4; i < 12; i++) | |
11197 | *eh++ = DW_CFA_restore + i; | |
11198 | *eh++ = DW_CFA_advance_loc + 2; | |
11199 | } | |
df136d64 AM |
11200 | *eh++ = DW_CFA_restore_extended; |
11201 | *eh++ = 65; | |
11202 | stub_entry->group->eh_size = eh - base; | |
11203 | } | |
a7f2871e AM |
11204 | return p; |
11205 | } | |
11206 | ||
176a0d42 AM |
11207 | static Elf_Internal_Rela * |
11208 | get_relocs (asection *sec, int count) | |
11209 | { | |
11210 | Elf_Internal_Rela *relocs; | |
11211 | struct bfd_elf_section_data *elfsec_data; | |
11212 | ||
11213 | elfsec_data = elf_section_data (sec); | |
11214 | relocs = elfsec_data->relocs; | |
11215 | if (relocs == NULL) | |
11216 | { | |
11217 | bfd_size_type relsize; | |
11218 | relsize = sec->reloc_count * sizeof (*relocs); | |
11219 | relocs = bfd_alloc (sec->owner, relsize); | |
11220 | if (relocs == NULL) | |
11221 | return NULL; | |
11222 | elfsec_data->relocs = relocs; | |
d4730f92 BS |
11223 | elfsec_data->rela.hdr = bfd_zalloc (sec->owner, |
11224 | sizeof (Elf_Internal_Shdr)); | |
11225 | if (elfsec_data->rela.hdr == NULL) | |
11226 | return NULL; | |
11227 | elfsec_data->rela.hdr->sh_size = (sec->reloc_count | |
11228 | * sizeof (Elf64_External_Rela)); | |
11229 | elfsec_data->rela.hdr->sh_entsize = sizeof (Elf64_External_Rela); | |
176a0d42 AM |
11230 | sec->reloc_count = 0; |
11231 | } | |
11232 | relocs += sec->reloc_count; | |
11233 | sec->reloc_count += count; | |
11234 | return relocs; | |
11235 | } | |
11236 | ||
3d58e1fc AM |
11237 | /* Convert the relocs R[0] thru R[-NUM_REL+1], which are all no-symbol |
11238 | forms, to the equivalent relocs against the global symbol given by | |
11239 | STUB_ENTRY->H. */ | |
11240 | ||
11241 | static bfd_boolean | |
11242 | use_global_in_relocs (struct ppc_link_hash_table *htab, | |
11243 | struct ppc_stub_hash_entry *stub_entry, | |
11244 | Elf_Internal_Rela *r, unsigned int num_rel) | |
11245 | { | |
11246 | struct elf_link_hash_entry **hashes; | |
11247 | unsigned long symndx; | |
11248 | struct ppc_link_hash_entry *h; | |
11249 | bfd_vma symval; | |
11250 | ||
11251 | /* Relocs are always against symbols in their own object file. Fake | |
11252 | up global sym hashes for the stub bfd (which has no symbols). */ | |
11253 | hashes = elf_sym_hashes (htab->params->stub_bfd); | |
11254 | if (hashes == NULL) | |
11255 | { | |
11256 | bfd_size_type hsize; | |
11257 | ||
11258 | /* When called the first time, stub_globals will contain the | |
11259 | total number of symbols seen during stub sizing. After | |
11260 | allocating, stub_globals is used as an index to fill the | |
11261 | hashes array. */ | |
11262 | hsize = (htab->stub_globals + 1) * sizeof (*hashes); | |
11263 | hashes = bfd_zalloc (htab->params->stub_bfd, hsize); | |
11264 | if (hashes == NULL) | |
11265 | return FALSE; | |
11266 | elf_sym_hashes (htab->params->stub_bfd) = hashes; | |
11267 | htab->stub_globals = 1; | |
11268 | } | |
11269 | symndx = htab->stub_globals++; | |
11270 | h = stub_entry->h; | |
11271 | hashes[symndx] = &h->elf; | |
11272 | if (h->oh != NULL && h->oh->is_func) | |
11273 | h = ppc_follow_link (h->oh); | |
11274 | BFD_ASSERT (h->elf.root.type == bfd_link_hash_defined | |
11275 | || h->elf.root.type == bfd_link_hash_defweak); | |
ed7007c1 | 11276 | symval = defined_sym_val (&h->elf); |
3d58e1fc AM |
11277 | while (num_rel-- != 0) |
11278 | { | |
11279 | r->r_info = ELF64_R_INFO (symndx, ELF64_R_TYPE (r->r_info)); | |
11280 | if (h->elf.root.u.def.section != stub_entry->target_section) | |
11281 | { | |
11282 | /* H is an opd symbol. The addend must be zero, and the | |
11283 | branch reloc is the only one we can convert. */ | |
11284 | r->r_addend = 0; | |
11285 | break; | |
11286 | } | |
11287 | else | |
11288 | r->r_addend -= symval; | |
11289 | --r; | |
11290 | } | |
11291 | return TRUE; | |
11292 | } | |
11293 | ||
aa374f67 | 11294 | static bfd_vma |
25f53a85 | 11295 | get_r2off (struct bfd_link_info *info, |
aa374f67 AM |
11296 | struct ppc_stub_hash_entry *stub_entry) |
11297 | { | |
25f53a85 | 11298 | struct ppc_link_hash_table *htab = ppc_hash_table (info); |
6f20ed8a | 11299 | bfd_vma r2off = htab->sec_info[stub_entry->target_section->id].toc_off; |
aa374f67 AM |
11300 | |
11301 | if (r2off == 0) | |
11302 | { | |
11303 | /* Support linking -R objects. Get the toc pointer from the | |
11304 | opd entry. */ | |
11305 | char buf[8]; | |
b9e5796b AM |
11306 | if (!htab->opd_abi) |
11307 | return r2off; | |
aa374f67 AM |
11308 | asection *opd = stub_entry->h->elf.root.u.def.section; |
11309 | bfd_vma opd_off = stub_entry->h->elf.root.u.def.value; | |
11310 | ||
11311 | if (strcmp (opd->name, ".opd") != 0 | |
11312 | || opd->reloc_count != 0) | |
11313 | { | |
2cdcc330 AM |
11314 | info->callbacks->einfo |
11315 | (_("%P: cannot find opd entry toc for `%pT'\n"), | |
11316 | stub_entry->h->elf.root.root.string); | |
aa374f67 | 11317 | bfd_set_error (bfd_error_bad_value); |
a7c49797 | 11318 | return (bfd_vma) -1; |
aa374f67 AM |
11319 | } |
11320 | if (!bfd_get_section_contents (opd->owner, opd, buf, opd_off + 8, 8)) | |
a7c49797 | 11321 | return (bfd_vma) -1; |
aa374f67 | 11322 | r2off = bfd_get_64 (opd->owner, buf); |
25f53a85 | 11323 | r2off -= elf_gp (info->output_bfd); |
aa374f67 | 11324 | } |
6f20ed8a | 11325 | r2off -= htab->sec_info[stub_entry->group->link_sec->id].toc_off; |
aa374f67 AM |
11326 | return r2off; |
11327 | } | |
11328 | ||
b34976b6 | 11329 | static bfd_boolean |
4ce794b7 | 11330 | ppc_build_one_stub (struct bfd_hash_entry *gen_entry, void *in_arg) |
5d1634d7 | 11331 | { |
721956f4 AM |
11332 | struct ppc_stub_hash_entry *stub_entry; |
11333 | struct ppc_branch_hash_entry *br_entry; | |
5d1634d7 AM |
11334 | struct bfd_link_info *info; |
11335 | struct ppc_link_hash_table *htab; | |
721956f4 | 11336 | bfd_byte *loc; |
3d58e1fc | 11337 | bfd_byte *p, *relp; |
1aa42141 | 11338 | bfd_vma targ, off; |
176a0d42 | 11339 | Elf_Internal_Rela *r; |
e054468f | 11340 | asection *plt; |
3d58e1fc | 11341 | int num_rel; |
04bdff6a | 11342 | int odd; |
5d1634d7 | 11343 | |
721956f4 AM |
11344 | /* Massage our args to the form they really have. */ |
11345 | stub_entry = (struct ppc_stub_hash_entry *) gen_entry; | |
4ce794b7 | 11346 | info = in_arg; |
5d1634d7 | 11347 | |
abf874aa CL |
11348 | /* Fail if the target section could not be assigned to an output |
11349 | section. The user should fix his linker script. */ | |
11350 | if (stub_entry->target_section != NULL | |
11351 | && stub_entry->target_section->output_section == NULL | |
11352 | && info->non_contiguous_regions) | |
53215f21 CL |
11353 | info->callbacks->einfo (_("%F%P: Could not assign '%pA' to an output section. " |
11354 | "Retry without --enable-non-contiguous-regions.\n"), | |
11355 | stub_entry->target_section); | |
abf874aa CL |
11356 | |
11357 | /* Same for the group. */ | |
11358 | if (stub_entry->group->stub_sec != NULL | |
11359 | && stub_entry->group->stub_sec->output_section == NULL | |
11360 | && info->non_contiguous_regions) | |
53215f21 CL |
11361 | info->callbacks->einfo (_("%F%P: Could not assign group %pA target %pA to an " |
11362 | "output section. Retry without " | |
11363 | "--enable-non-contiguous-regions.\n"), | |
11364 | stub_entry->group->stub_sec, | |
11365 | stub_entry->target_section); | |
abf874aa | 11366 | |
5d1634d7 | 11367 | htab = ppc_hash_table (info); |
4dfe6ac6 NC |
11368 | if (htab == NULL) |
11369 | return FALSE; | |
5d1634d7 | 11370 | |
1aa42141 | 11371 | BFD_ASSERT (stub_entry->stub_offset >= stub_entry->group->stub_sec->size); |
6f20ed8a | 11372 | loc = stub_entry->group->stub_sec->contents + stub_entry->stub_offset; |
721956f4 | 11373 | |
4ce794b7 | 11374 | htab->stub_count[stub_entry->stub_type - 1] += 1; |
721956f4 | 11375 | switch (stub_entry->stub_type) |
5d1634d7 | 11376 | { |
721956f4 | 11377 | case ppc_stub_long_branch: |
ad8e1ba5 | 11378 | case ppc_stub_long_branch_r2off: |
721956f4 | 11379 | /* Branches are relative. This is where we are going to. */ |
1aa42141 | 11380 | targ = (stub_entry->target_value |
6911b7dc AM |
11381 | + stub_entry->target_section->output_offset |
11382 | + stub_entry->target_section->output_section->vma); | |
1aa42141 | 11383 | targ += PPC64_LOCAL_ENTRY_OFFSET (stub_entry->other); |
5d1634d7 | 11384 | |
721956f4 | 11385 | /* And this is where we are coming from. */ |
1aa42141 AM |
11386 | off = (stub_entry->stub_offset |
11387 | + stub_entry->group->stub_sec->output_offset | |
11388 | + stub_entry->group->stub_sec->output_section->vma); | |
11389 | off = targ - off; | |
e86ce104 | 11390 | |
9e390558 | 11391 | p = loc; |
ac2df442 | 11392 | if (stub_entry->stub_type == ppc_stub_long_branch_r2off) |
ad8e1ba5 | 11393 | { |
25f53a85 | 11394 | bfd_vma r2off = get_r2off (info, stub_entry); |
ad8e1ba5 | 11395 | |
a7c49797 | 11396 | if (r2off == (bfd_vma) -1) |
aa374f67 AM |
11397 | { |
11398 | htab->stub_error = TRUE; | |
11399 | return FALSE; | |
11400 | } | |
9e390558 AM |
11401 | bfd_put_32 (htab->params->stub_bfd, STD_R2_0R1 + STK_TOC (htab), p); |
11402 | p += 4; | |
ac2df442 AM |
11403 | if (PPC_HA (r2off) != 0) |
11404 | { | |
e7d1c40c | 11405 | bfd_put_32 (htab->params->stub_bfd, |
9e390558 AM |
11406 | ADDIS_R2_R2 | PPC_HA (r2off), p); |
11407 | p += 4; | |
a7c49797 AM |
11408 | } |
11409 | if (PPC_LO (r2off) != 0) | |
11410 | { | |
11411 | bfd_put_32 (htab->params->stub_bfd, | |
9e390558 AM |
11412 | ADDI_R2_R2 | PPC_LO (r2off), p); |
11413 | p += 4; | |
ac2df442 | 11414 | } |
9e390558 | 11415 | off -= p - loc; |
ad8e1ba5 | 11416 | } |
9e390558 AM |
11417 | bfd_put_32 (htab->params->stub_bfd, B_DOT | (off & 0x3fffffc), p); |
11418 | p += 4; | |
ad8e1ba5 | 11419 | |
5c3dead3 AM |
11420 | if (off + (1 << 25) >= (bfd_vma) (1 << 26)) |
11421 | { | |
cf97bcb0 AM |
11422 | _bfd_error_handler |
11423 | (_("long branch stub `%s' offset overflow"), | |
bc30df16 | 11424 | stub_entry->root.string); |
5c3dead3 AM |
11425 | htab->stub_error = TRUE; |
11426 | return FALSE; | |
11427 | } | |
ee75fd95 AM |
11428 | |
11429 | if (info->emitrelocations) | |
11430 | { | |
6f20ed8a | 11431 | r = get_relocs (stub_entry->group->stub_sec, 1); |
176a0d42 AM |
11432 | if (r == NULL) |
11433 | return FALSE; | |
9e390558 | 11434 | r->r_offset = p - 4 - stub_entry->group->stub_sec->contents; |
ee75fd95 | 11435 | r->r_info = ELF64_R_INFO (0, R_PPC64_REL24); |
1aa42141 | 11436 | r->r_addend = targ; |
3d58e1fc AM |
11437 | if (stub_entry->h != NULL |
11438 | && !use_global_in_relocs (htab, stub_entry, r, 1)) | |
11439 | return FALSE; | |
ee75fd95 | 11440 | } |
721956f4 | 11441 | break; |
e86ce104 | 11442 | |
721956f4 | 11443 | case ppc_stub_plt_branch: |
ad8e1ba5 | 11444 | case ppc_stub_plt_branch_r2off: |
721956f4 AM |
11445 | br_entry = ppc_branch_hash_lookup (&htab->branch_hash_table, |
11446 | stub_entry->root.string + 9, | |
b34976b6 | 11447 | FALSE, FALSE); |
721956f4 AM |
11448 | if (br_entry == NULL) |
11449 | { | |
cf97bcb0 AM |
11450 | _bfd_error_handler (_("can't find branch stub `%s'"), |
11451 | stub_entry->root.string); | |
b34976b6 AM |
11452 | htab->stub_error = TRUE; |
11453 | return FALSE; | |
721956f4 AM |
11454 | } |
11455 | ||
1aa42141 | 11456 | targ = (stub_entry->target_value |
176a0d42 AM |
11457 | + stub_entry->target_section->output_offset |
11458 | + stub_entry->target_section->output_section->vma); | |
6911b7dc | 11459 | if (stub_entry->stub_type != ppc_stub_plt_branch_r2off) |
1aa42141 | 11460 | targ += PPC64_LOCAL_ENTRY_OFFSET (stub_entry->other); |
721956f4 | 11461 | |
1aa42141 | 11462 | bfd_put_64 (htab->brlt->owner, targ, |
4ce794b7 | 11463 | htab->brlt->contents + br_entry->offset); |
721956f4 | 11464 | |
f94498ff | 11465 | if (br_entry->iter == htab->stub_iteration) |
721956f4 | 11466 | { |
f94498ff | 11467 | br_entry->iter = 0; |
84f5d08e | 11468 | |
f94498ff | 11469 | if (htab->relbrlt != NULL) |
84f5d08e | 11470 | { |
f94498ff AM |
11471 | /* Create a reloc for the branch lookup table entry. */ |
11472 | Elf_Internal_Rela rela; | |
11473 | bfd_byte *rl; | |
11474 | ||
11475 | rela.r_offset = (br_entry->offset | |
11476 | + htab->brlt->output_offset | |
11477 | + htab->brlt->output_section->vma); | |
11478 | rela.r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE); | |
1aa42141 | 11479 | rela.r_addend = targ; |
f94498ff AM |
11480 | |
11481 | rl = htab->relbrlt->contents; | |
11482 | rl += (htab->relbrlt->reloc_count++ | |
11483 | * sizeof (Elf64_External_Rela)); | |
11484 | bfd_elf64_swap_reloca_out (htab->relbrlt->owner, &rela, rl); | |
11485 | } | |
11486 | else if (info->emitrelocations) | |
11487 | { | |
176a0d42 AM |
11488 | r = get_relocs (htab->brlt, 1); |
11489 | if (r == NULL) | |
11490 | return FALSE; | |
11491 | /* brlt, being SEC_LINKER_CREATED does not go through the | |
11492 | normal reloc processing. Symbols and offsets are not | |
11493 | translated from input file to output file form, so | |
11494 | set up the offset per the output file. */ | |
f94498ff AM |
11495 | r->r_offset = (br_entry->offset |
11496 | + htab->brlt->output_offset | |
11497 | + htab->brlt->output_section->vma); | |
11498 | r->r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE); | |
1aa42141 | 11499 | r->r_addend = targ; |
84f5d08e | 11500 | } |
84f5d08e | 11501 | } |
721956f4 | 11502 | |
1aa42141 | 11503 | targ = (br_entry->offset |
176a0d42 AM |
11504 | + htab->brlt->output_offset |
11505 | + htab->brlt->output_section->vma); | |
11506 | ||
1aa42141 AM |
11507 | off = (elf_gp (info->output_bfd) |
11508 | + htab->sec_info[stub_entry->group->link_sec->id].toc_off); | |
11509 | off = targ - off; | |
721956f4 | 11510 | |
ad8e1ba5 | 11511 | if (off + 0x80008000 > 0xffffffff || (off & 7) != 0) |
5d1634d7 | 11512 | { |
25f53a85 | 11513 | info->callbacks->einfo |
c1c8c1ef | 11514 | (_("%P: linkage table error against `%pT'\n"), |
721956f4 | 11515 | stub_entry->root.string); |
5d1634d7 | 11516 | bfd_set_error (bfd_error_bad_value); |
b34976b6 AM |
11517 | htab->stub_error = TRUE; |
11518 | return FALSE; | |
5d1634d7 | 11519 | } |
41bd81ab | 11520 | |
176a0d42 AM |
11521 | if (info->emitrelocations) |
11522 | { | |
6f20ed8a | 11523 | r = get_relocs (stub_entry->group->stub_sec, 1 + (PPC_HA (off) != 0)); |
176a0d42 AM |
11524 | if (r == NULL) |
11525 | return FALSE; | |
6f20ed8a | 11526 | r[0].r_offset = loc - stub_entry->group->stub_sec->contents; |
7cfbafbc AM |
11527 | if (bfd_big_endian (info->output_bfd)) |
11528 | r[0].r_offset += 2; | |
00f412ee | 11529 | if (stub_entry->stub_type == ppc_stub_plt_branch_r2off) |
176a0d42 AM |
11530 | r[0].r_offset += 4; |
11531 | r[0].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_DS); | |
1aa42141 | 11532 | r[0].r_addend = targ; |
176a0d42 AM |
11533 | if (PPC_HA (off) != 0) |
11534 | { | |
11535 | r[0].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_HA); | |
11536 | r[1].r_offset = r[0].r_offset + 4; | |
11537 | r[1].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS); | |
11538 | r[1].r_addend = r[0].r_addend; | |
11539 | } | |
11540 | } | |
11541 | ||
9e390558 | 11542 | p = loc; |
00f412ee | 11543 | if (stub_entry->stub_type != ppc_stub_plt_branch_r2off) |
ad8e1ba5 | 11544 | { |
176a0d42 | 11545 | if (PPC_HA (off) != 0) |
ac2df442 | 11546 | { |
e7d1c40c | 11547 | bfd_put_32 (htab->params->stub_bfd, |
9e390558 AM |
11548 | ADDIS_R12_R2 | PPC_HA (off), p); |
11549 | p += 4; | |
e7d1c40c | 11550 | bfd_put_32 (htab->params->stub_bfd, |
9e390558 | 11551 | LD_R12_0R12 | PPC_LO (off), p); |
ac2df442 AM |
11552 | } |
11553 | else | |
9e390558 AM |
11554 | bfd_put_32 (htab->params->stub_bfd, |
11555 | LD_R12_0R2 | PPC_LO (off), p); | |
ad8e1ba5 AM |
11556 | } |
11557 | else | |
11558 | { | |
25f53a85 | 11559 | bfd_vma r2off = get_r2off (info, stub_entry); |
aa374f67 | 11560 | |
a7c49797 | 11561 | if (r2off == (bfd_vma) -1) |
aa374f67 AM |
11562 | { |
11563 | htab->stub_error = TRUE; | |
11564 | return FALSE; | |
11565 | } | |
ad8e1ba5 | 11566 | |
9e390558 AM |
11567 | bfd_put_32 (htab->params->stub_bfd, STD_R2_0R1 + STK_TOC (htab), p); |
11568 | p += 4; | |
176a0d42 | 11569 | if (PPC_HA (off) != 0) |
ac2df442 | 11570 | { |
e7d1c40c | 11571 | bfd_put_32 (htab->params->stub_bfd, |
9e390558 AM |
11572 | ADDIS_R12_R2 | PPC_HA (off), p); |
11573 | p += 4; | |
e7d1c40c | 11574 | bfd_put_32 (htab->params->stub_bfd, |
9e390558 | 11575 | LD_R12_0R12 | PPC_LO (off), p); |
ac2df442 AM |
11576 | } |
11577 | else | |
9e390558 | 11578 | bfd_put_32 (htab->params->stub_bfd, LD_R12_0R2 | PPC_LO (off), p); |
ac2df442 AM |
11579 | |
11580 | if (PPC_HA (r2off) != 0) | |
11581 | { | |
9e390558 | 11582 | p += 4; |
e7d1c40c | 11583 | bfd_put_32 (htab->params->stub_bfd, |
9e390558 | 11584 | ADDIS_R2_R2 | PPC_HA (r2off), p); |
00f412ee AM |
11585 | } |
11586 | if (PPC_LO (r2off) != 0) | |
11587 | { | |
9e390558 | 11588 | p += 4; |
e7d1c40c | 11589 | bfd_put_32 (htab->params->stub_bfd, |
9e390558 | 11590 | ADDI_R2_R2 | PPC_LO (r2off), p); |
ac2df442 | 11591 | } |
ad8e1ba5 | 11592 | } |
9e390558 AM |
11593 | p += 4; |
11594 | bfd_put_32 (htab->params->stub_bfd, MTCTR_R12, p); | |
11595 | p += 4; | |
407aa07c AM |
11596 | bfd_put_32 (htab->params->stub_bfd, BCTR, p); |
11597 | p += 4; | |
721956f4 | 11598 | break; |
5d1634d7 | 11599 | |
05d0e962 AM |
11600 | case ppc_stub_long_branch_notoc: |
11601 | case ppc_stub_long_branch_both: | |
11602 | case ppc_stub_plt_branch_notoc: | |
11603 | case ppc_stub_plt_branch_both: | |
11604 | case ppc_stub_plt_call_notoc: | |
11605 | case ppc_stub_plt_call_both: | |
11606 | p = loc; | |
f891966f | 11607 | off = (stub_entry->stub_offset |
05d0e962 AM |
11608 | + stub_entry->group->stub_sec->output_offset |
11609 | + stub_entry->group->stub_sec->output_section->vma); | |
11610 | if (stub_entry->stub_type == ppc_stub_long_branch_both | |
11611 | || stub_entry->stub_type == ppc_stub_plt_branch_both | |
11612 | || stub_entry->stub_type == ppc_stub_plt_call_both) | |
11613 | { | |
11614 | off += 4; | |
11615 | bfd_put_32 (htab->params->stub_bfd, STD_R2_0R1 + STK_TOC (htab), p); | |
11616 | p += 4; | |
11617 | } | |
11618 | if (stub_entry->stub_type >= ppc_stub_plt_call_notoc) | |
11619 | { | |
11620 | targ = stub_entry->plt_ent->plt.offset & ~1; | |
11621 | if (targ >= (bfd_vma) -2) | |
11622 | abort (); | |
11623 | ||
11624 | plt = htab->elf.splt; | |
11625 | if (!htab->elf.dynamic_sections_created | |
11626 | || stub_entry->h == NULL | |
11627 | || stub_entry->h->elf.dynindx == -1) | |
11628 | { | |
11629 | if (stub_entry->symtype == STT_GNU_IFUNC) | |
11630 | plt = htab->elf.iplt; | |
11631 | else | |
11632 | plt = htab->pltlocal; | |
11633 | } | |
11634 | targ += plt->output_offset + plt->output_section->vma; | |
11635 | } | |
11636 | else | |
11637 | targ = (stub_entry->target_value | |
11638 | + stub_entry->target_section->output_offset | |
11639 | + stub_entry->target_section->output_section->vma); | |
04bdff6a | 11640 | odd = off & 4; |
05d0e962 | 11641 | off = targ - off; |
f891966f | 11642 | |
3d58e1fc AM |
11643 | relp = p; |
11644 | num_rel = 0; | |
d349c8e2 | 11645 | if (htab->params->power10_stubs != 0) |
04bdff6a AM |
11646 | { |
11647 | bfd_boolean load = stub_entry->stub_type >= ppc_stub_plt_call_notoc; | |
7c1f4227 | 11648 | p = build_power10_offset (htab->params->stub_bfd, p, off, odd, load); |
04bdff6a AM |
11649 | } |
11650 | else | |
11651 | { | |
11652 | /* The notoc stubs calculate their target (either a PLT entry or | |
11653 | the global entry point of a function) relative to the PC | |
11654 | returned by the "bcl" two instructions past the start of the | |
11655 | sequence emitted by build_offset. The offset is therefore 8 | |
11656 | less than calculated from the start of the sequence. */ | |
11657 | off -= 8; | |
11658 | p = build_offset (htab->params->stub_bfd, p, off, | |
11659 | stub_entry->stub_type >= ppc_stub_plt_call_notoc); | |
11660 | } | |
11661 | ||
f891966f | 11662 | if (stub_entry->stub_type <= ppc_stub_long_branch_both) |
05d0e962 | 11663 | { |
f891966f | 11664 | bfd_vma from; |
3d58e1fc | 11665 | num_rel = 1; |
f891966f AM |
11666 | from = (stub_entry->stub_offset |
11667 | + stub_entry->group->stub_sec->output_offset | |
11668 | + stub_entry->group->stub_sec->output_section->vma | |
11669 | + (p - loc)); | |
05d0e962 | 11670 | bfd_put_32 (htab->params->stub_bfd, |
f891966f | 11671 | B_DOT | ((targ - from) & 0x3fffffc), p); |
05d0e962 AM |
11672 | } |
11673 | else | |
11674 | { | |
11675 | bfd_put_32 (htab->params->stub_bfd, MTCTR_R12, p); | |
11676 | p += 4; | |
11677 | bfd_put_32 (htab->params->stub_bfd, BCTR, p); | |
11678 | } | |
11679 | p += 4; | |
df136d64 | 11680 | |
3d58e1fc AM |
11681 | if (info->emitrelocations) |
11682 | { | |
04bdff6a | 11683 | bfd_vma roff = relp - stub_entry->group->stub_sec->contents; |
d349c8e2 | 11684 | if (htab->params->power10_stubs != 0) |
7c1f4227 | 11685 | num_rel += num_relocs_for_power10_offset (off, odd); |
04bdff6a AM |
11686 | else |
11687 | { | |
11688 | num_rel += num_relocs_for_offset (off); | |
11689 | roff += 16; | |
11690 | } | |
3d58e1fc AM |
11691 | r = get_relocs (stub_entry->group->stub_sec, num_rel); |
11692 | if (r == NULL) | |
11693 | return FALSE; | |
d349c8e2 | 11694 | if (htab->params->power10_stubs != 0) |
7c1f4227 | 11695 | r = emit_relocs_for_power10_offset (info, r, roff, targ, off, odd); |
04bdff6a AM |
11696 | else |
11697 | r = emit_relocs_for_offset (info, r, roff, targ, off); | |
3d58e1fc AM |
11698 | if (stub_entry->stub_type == ppc_stub_long_branch_notoc |
11699 | || stub_entry->stub_type == ppc_stub_long_branch_both) | |
11700 | { | |
11701 | ++r; | |
11702 | roff = p - 4 - stub_entry->group->stub_sec->contents; | |
11703 | r->r_offset = roff; | |
11704 | r->r_info = ELF64_R_INFO (0, R_PPC64_REL24); | |
11705 | r->r_addend = targ; | |
11706 | if (stub_entry->h != NULL | |
11707 | && !use_global_in_relocs (htab, stub_entry, r, num_rel)) | |
11708 | return FALSE; | |
11709 | } | |
11710 | } | |
11711 | ||
d349c8e2 | 11712 | if (htab->params->power10_stubs == 0 |
04bdff6a AM |
11713 | && htab->glink_eh_frame != NULL |
11714 | && htab->glink_eh_frame->size != 0) | |
df136d64 AM |
11715 | { |
11716 | bfd_byte *base, *eh; | |
11717 | unsigned int lr_used, delta; | |
11718 | ||
11719 | base = (htab->glink_eh_frame->contents | |
11720 | + stub_entry->group->eh_base + 17); | |
11721 | eh = base + stub_entry->group->eh_size; | |
11722 | lr_used = stub_entry->stub_offset + 8; | |
11723 | if (stub_entry->stub_type == ppc_stub_long_branch_both | |
11724 | || stub_entry->stub_type == ppc_stub_plt_branch_both | |
11725 | || stub_entry->stub_type == ppc_stub_plt_call_both) | |
11726 | lr_used += 4; | |
11727 | delta = lr_used - stub_entry->group->lr_restore; | |
11728 | stub_entry->group->lr_restore = lr_used + 8; | |
11729 | eh = eh_advance (htab->elf.dynobj, eh, delta); | |
11730 | *eh++ = DW_CFA_register; | |
11731 | *eh++ = 65; | |
11732 | *eh++ = 12; | |
11733 | *eh++ = DW_CFA_advance_loc + 2; | |
11734 | *eh++ = DW_CFA_restore_extended; | |
11735 | *eh++ = 65; | |
11736 | stub_entry->group->eh_size = eh - base; | |
11737 | } | |
05d0e962 AM |
11738 | break; |
11739 | ||
721956f4 | 11740 | case ppc_stub_plt_call: |
794e51c0 | 11741 | case ppc_stub_plt_call_r2save: |
e054468f | 11742 | if (stub_entry->h != NULL |
b31867b6 AM |
11743 | && stub_entry->h->is_func_descriptor |
11744 | && stub_entry->h->oh != NULL) | |
c862ae31 | 11745 | { |
b31867b6 AM |
11746 | struct ppc_link_hash_entry *fh = ppc_follow_link (stub_entry->h->oh); |
11747 | ||
11748 | /* If the old-ABI "dot-symbol" is undefined make it weak so | |
6f20ed8a | 11749 | we don't get a link error from RELOC_FOR_GLOBAL_SYMBOL. */ |
8c5b4e52 AM |
11750 | if (fh->elf.root.type == bfd_link_hash_undefined |
11751 | && (stub_entry->h->elf.root.type == bfd_link_hash_defined | |
11752 | || stub_entry->h->elf.root.type == bfd_link_hash_defweak)) | |
b31867b6 | 11753 | fh->elf.root.type = bfd_link_hash_undefweak; |
c862ae31 AM |
11754 | } |
11755 | ||
721956f4 | 11756 | /* Now build the stub. */ |
1aa42141 AM |
11757 | targ = stub_entry->plt_ent->plt.offset & ~1; |
11758 | if (targ >= (bfd_vma) -2) | |
721956f4 AM |
11759 | abort (); |
11760 | ||
33e44f2e | 11761 | plt = htab->elf.splt; |
25f23106 AM |
11762 | if (!htab->elf.dynamic_sections_created |
11763 | || stub_entry->h == NULL | |
11764 | || stub_entry->h->elf.dynindx == -1) | |
2d7ad24e AM |
11765 | { |
11766 | if (stub_entry->symtype == STT_GNU_IFUNC) | |
11767 | plt = htab->elf.iplt; | |
11768 | else | |
11769 | plt = htab->pltlocal; | |
11770 | } | |
1aa42141 | 11771 | targ += plt->output_offset + plt->output_section->vma; |
e054468f | 11772 | |
1aa42141 AM |
11773 | off = (elf_gp (info->output_bfd) |
11774 | + htab->sec_info[stub_entry->group->link_sec->id].toc_off); | |
11775 | off = targ - off; | |
721956f4 | 11776 | |
ad8e1ba5 | 11777 | if (off + 0x80008000 > 0xffffffff || (off & 7) != 0) |
721956f4 | 11778 | { |
25f53a85 | 11779 | info->callbacks->einfo |
695344c0 | 11780 | /* xgettext:c-format */ |
c1c8c1ef | 11781 | (_("%P: linkage table error against `%pT'\n"), |
e054468f AM |
11782 | stub_entry->h != NULL |
11783 | ? stub_entry->h->elf.root.root.string | |
11784 | : "<local sym>"); | |
721956f4 | 11785 | bfd_set_error (bfd_error_bad_value); |
b34976b6 AM |
11786 | htab->stub_error = TRUE; |
11787 | return FALSE; | |
721956f4 AM |
11788 | } |
11789 | ||
176a0d42 AM |
11790 | r = NULL; |
11791 | if (info->emitrelocations) | |
11792 | { | |
6f20ed8a | 11793 | r = get_relocs (stub_entry->group->stub_sec, |
3ba720c7 AM |
11794 | ((PPC_HA (off) != 0) |
11795 | + (htab->opd_abi | |
e7d1c40c | 11796 | ? 2 + (htab->params->plt_static_chain |
3ba720c7 AM |
11797 | && PPC_HA (off + 16) == PPC_HA (off)) |
11798 | : 1))); | |
176a0d42 AM |
11799 | if (r == NULL) |
11800 | return FALSE; | |
6f20ed8a | 11801 | r[0].r_offset = loc - stub_entry->group->stub_sec->contents; |
7cfbafbc AM |
11802 | if (bfd_big_endian (info->output_bfd)) |
11803 | r[0].r_offset += 2; | |
1aa42141 | 11804 | r[0].r_addend = targ; |
176a0d42 | 11805 | } |
a7f2871e | 11806 | if (stub_entry->h != NULL |
ed7007c1 | 11807 | && is_tls_get_addr (&stub_entry->h->elf, htab) |
7c9cf415 | 11808 | && htab->params->tls_get_addr_opt) |
794e51c0 | 11809 | p = build_tls_get_addr_stub (htab, stub_entry, loc, off, r); |
a7f2871e | 11810 | else |
794e51c0 | 11811 | p = build_plt_stub (htab, stub_entry, loc, off, r); |
721956f4 AM |
11812 | break; |
11813 | ||
a4b6fadd AM |
11814 | case ppc_stub_save_res: |
11815 | return TRUE; | |
11816 | ||
721956f4 AM |
11817 | default: |
11818 | BFD_FAIL (); | |
b34976b6 | 11819 | return FALSE; |
721956f4 AM |
11820 | } |
11821 | ||
1aa42141 | 11822 | stub_entry->group->stub_sec->size = stub_entry->stub_offset + (p - loc); |
97b639ba | 11823 | |
e7d1c40c | 11824 | if (htab->params->emit_stub_syms) |
97b639ba AM |
11825 | { |
11826 | struct elf_link_hash_entry *h; | |
ee75fd95 AM |
11827 | size_t len1, len2; |
11828 | char *name; | |
11829 | const char *const stub_str[] = { "long_branch", | |
05d0e962 AM |
11830 | "long_branch", |
11831 | "long_branch", | |
3f6ff479 AM |
11832 | "long_branch", |
11833 | "plt_branch", | |
ee75fd95 | 11834 | "plt_branch", |
05d0e962 AM |
11835 | "plt_branch", |
11836 | "plt_branch", | |
11837 | "plt_call", | |
11838 | "plt_call", | |
794e51c0 | 11839 | "plt_call", |
ee75fd95 AM |
11840 | "plt_call" }; |
11841 | ||
11842 | len1 = strlen (stub_str[stub_entry->stub_type - 1]); | |
11843 | len2 = strlen (stub_entry->root.string); | |
11844 | name = bfd_malloc (len1 + len2 + 2); | |
11845 | if (name == NULL) | |
11846 | return FALSE; | |
11847 | memcpy (name, stub_entry->root.string, 9); | |
11848 | memcpy (name + 9, stub_str[stub_entry->stub_type - 1], len1); | |
11849 | memcpy (name + len1 + 9, stub_entry->root.string + 8, len2 - 8 + 1); | |
11850 | h = elf_link_hash_lookup (&htab->elf, name, TRUE, FALSE, FALSE); | |
97b639ba AM |
11851 | if (h == NULL) |
11852 | return FALSE; | |
11853 | if (h->root.type == bfd_link_hash_new) | |
11854 | { | |
11855 | h->root.type = bfd_link_hash_defined; | |
6f20ed8a | 11856 | h->root.u.def.section = stub_entry->group->stub_sec; |
97b639ba | 11857 | h->root.u.def.value = stub_entry->stub_offset; |
f5385ebf AM |
11858 | h->ref_regular = 1; |
11859 | h->def_regular = 1; | |
11860 | h->ref_regular_nonweak = 1; | |
11861 | h->forced_local = 1; | |
11862 | h->non_elf = 0; | |
2ec55de3 | 11863 | h->root.linker_def = 1; |
97b639ba AM |
11864 | } |
11865 | } | |
11866 | ||
b34976b6 | 11867 | return TRUE; |
721956f4 AM |
11868 | } |
11869 | ||
11870 | /* As above, but don't actually build the stub. Just bump offset so | |
11871 | we know stub section sizes, and select plt_branch stubs where | |
11872 | long_branch stubs won't do. */ | |
11873 | ||
b34976b6 | 11874 | static bfd_boolean |
4ce794b7 | 11875 | ppc_size_one_stub (struct bfd_hash_entry *gen_entry, void *in_arg) |
721956f4 AM |
11876 | { |
11877 | struct ppc_stub_hash_entry *stub_entry; | |
63bc6f6c | 11878 | struct bfd_link_info *info; |
721956f4 | 11879 | struct ppc_link_hash_table *htab; |
f891966f AM |
11880 | asection *plt; |
11881 | bfd_vma targ, off, r2off; | |
04bdff6a | 11882 | unsigned int size, extra, lr_used, delta, odd; |
721956f4 AM |
11883 | |
11884 | /* Massage our args to the form they really have. */ | |
11885 | stub_entry = (struct ppc_stub_hash_entry *) gen_entry; | |
63bc6f6c AM |
11886 | info = in_arg; |
11887 | ||
11888 | htab = ppc_hash_table (info); | |
4dfe6ac6 NC |
11889 | if (htab == NULL) |
11890 | return FALSE; | |
721956f4 | 11891 | |
abf874aa CL |
11892 | /* Fail if the target section could not be assigned to an output |
11893 | section. The user should fix his linker script. */ | |
11894 | if (stub_entry->target_section != NULL | |
11895 | && stub_entry->target_section->output_section == NULL | |
11896 | && info->non_contiguous_regions) | |
53215f21 CL |
11897 | info->callbacks->einfo (_("%F%P: Could not assign %pA to an output section. " |
11898 | "Retry without --enable-non-contiguous-regions.\n"), | |
11899 | stub_entry->target_section); | |
abf874aa CL |
11900 | |
11901 | /* Same for the group. */ | |
11902 | if (stub_entry->group->stub_sec != NULL | |
11903 | && stub_entry->group->stub_sec->output_section == NULL | |
11904 | && info->non_contiguous_regions) | |
53215f21 CL |
11905 | info->callbacks->einfo (_("%F%P: Could not assign group %pA target %pA to an " |
11906 | "output section. Retry without " | |
11907 | "--enable-non-contiguous-regions.\n"), | |
11908 | stub_entry->group->stub_sec, | |
11909 | stub_entry->target_section); | |
abf874aa | 11910 | |
1aa42141 AM |
11911 | /* Make a note of the offset within the stubs for this entry. */ |
11912 | stub_entry->stub_offset = stub_entry->group->stub_sec->size; | |
11913 | ||
a4b6fadd AM |
11914 | if (stub_entry->h != NULL |
11915 | && stub_entry->h->save_res | |
11916 | && stub_entry->h->elf.root.type == bfd_link_hash_defined | |
11917 | && stub_entry->h->elf.root.u.def.section == htab->sfpr) | |
11918 | { | |
11919 | /* Don't make stubs to out-of-line register save/restore | |
11920 | functions. Instead, emit copies of the functions. */ | |
11921 | stub_entry->group->needs_save_res = 1; | |
11922 | stub_entry->stub_type = ppc_stub_save_res; | |
11923 | return TRUE; | |
11924 | } | |
11925 | ||
f891966f | 11926 | switch (stub_entry->stub_type) |
721956f4 | 11927 | { |
f891966f AM |
11928 | case ppc_stub_plt_branch: |
11929 | case ppc_stub_plt_branch_r2off: | |
11930 | /* Reset the stub type from the plt branch variant in case we now | |
11931 | can reach with a shorter stub. */ | |
11932 | stub_entry->stub_type += ppc_stub_long_branch - ppc_stub_plt_branch; | |
11933 | /* Fall through. */ | |
11934 | case ppc_stub_long_branch: | |
11935 | case ppc_stub_long_branch_r2off: | |
1aa42141 AM |
11936 | targ = (stub_entry->target_value |
11937 | + stub_entry->target_section->output_offset | |
11938 | + stub_entry->target_section->output_section->vma); | |
f891966f | 11939 | targ += PPC64_LOCAL_ENTRY_OFFSET (stub_entry->other); |
1aa42141 AM |
11940 | off = (stub_entry->stub_offset |
11941 | + stub_entry->group->stub_sec->output_offset | |
11942 | + stub_entry->group->stub_sec->output_section->vma); | |
721956f4 | 11943 | |
ad8e1ba5 | 11944 | size = 4; |
f891966f | 11945 | r2off = 0; |
ad8e1ba5 AM |
11946 | if (stub_entry->stub_type == ppc_stub_long_branch_r2off) |
11947 | { | |
25f53a85 | 11948 | r2off = get_r2off (info, stub_entry); |
a7c49797 | 11949 | if (r2off == (bfd_vma) -1) |
aa374f67 AM |
11950 | { |
11951 | htab->stub_error = TRUE; | |
11952 | return FALSE; | |
11953 | } | |
a7c49797 | 11954 | size = 8; |
ac2df442 | 11955 | if (PPC_HA (r2off) != 0) |
a7c49797 AM |
11956 | size += 4; |
11957 | if (PPC_LO (r2off) != 0) | |
11958 | size += 4; | |
1aa42141 | 11959 | off += size - 4; |
ad8e1ba5 | 11960 | } |
1aa42141 | 11961 | off = targ - off; |
ad8e1ba5 | 11962 | |
f891966f AM |
11963 | /* If the branch offset is too big, use a ppc_stub_plt_branch. |
11964 | Do the same for -R objects without function descriptors. */ | |
11965 | if ((stub_entry->stub_type == ppc_stub_long_branch_r2off | |
11966 | && r2off == 0 | |
11967 | && htab->sec_info[stub_entry->target_section->id].toc_off == 0) | |
11968 | || off + (1 << 25) >= (bfd_vma) (1 << 26)) | |
721956f4 | 11969 | { |
f891966f | 11970 | struct ppc_branch_hash_entry *br_entry; |
df136d64 | 11971 | |
f891966f AM |
11972 | br_entry = ppc_branch_hash_lookup (&htab->branch_hash_table, |
11973 | stub_entry->root.string + 9, | |
11974 | TRUE, FALSE); | |
11975 | if (br_entry == NULL) | |
721956f4 | 11976 | { |
f891966f AM |
11977 | _bfd_error_handler (_("can't build branch stub `%s'"), |
11978 | stub_entry->root.string); | |
11979 | htab->stub_error = TRUE; | |
11980 | return FALSE; | |
721956f4 AM |
11981 | } |
11982 | ||
f891966f | 11983 | if (br_entry->iter != htab->stub_iteration) |
721956f4 | 11984 | { |
f891966f AM |
11985 | br_entry->iter = htab->stub_iteration; |
11986 | br_entry->offset = htab->brlt->size; | |
11987 | htab->brlt->size += 8; | |
63bc6f6c | 11988 | |
f891966f AM |
11989 | if (htab->relbrlt != NULL) |
11990 | htab->relbrlt->size += sizeof (Elf64_External_Rela); | |
11991 | else if (info->emitrelocations) | |
84f5d08e | 11992 | { |
f891966f AM |
11993 | htab->brlt->reloc_count += 1; |
11994 | htab->brlt->flags |= SEC_RELOC; | |
05d0e962 | 11995 | } |
f891966f | 11996 | } |
ac2df442 | 11997 | |
f891966f AM |
11998 | targ = (br_entry->offset |
11999 | + htab->brlt->output_offset | |
12000 | + htab->brlt->output_section->vma); | |
12001 | off = (elf_gp (info->output_bfd) | |
12002 | + htab->sec_info[stub_entry->group->link_sec->id].toc_off); | |
12003 | off = targ - off; | |
176a0d42 | 12004 | |
f891966f AM |
12005 | if (info->emitrelocations) |
12006 | { | |
12007 | stub_entry->group->stub_sec->reloc_count | |
12008 | += 1 + (PPC_HA (off) != 0); | |
12009 | stub_entry->group->stub_sec->flags |= SEC_RELOC; | |
12010 | } | |
05d0e962 | 12011 | |
f891966f AM |
12012 | stub_entry->stub_type += ppc_stub_plt_branch - ppc_stub_long_branch; |
12013 | if (stub_entry->stub_type != ppc_stub_plt_branch_r2off) | |
12014 | { | |
12015 | size = 12; | |
12016 | if (PPC_HA (off) != 0) | |
12017 | size = 16; | |
ac2df442 | 12018 | } |
f891966f | 12019 | else |
ac2df442 | 12020 | { |
f891966f AM |
12021 | size = 16; |
12022 | if (PPC_HA (off) != 0) | |
12023 | size += 4; | |
12024 | ||
12025 | if (PPC_HA (r2off) != 0) | |
12026 | size += 4; | |
12027 | if (PPC_LO (r2off) != 0) | |
12028 | size += 4; | |
ac2df442 | 12029 | } |
721956f4 | 12030 | } |
f891966f AM |
12031 | else if (info->emitrelocations) |
12032 | { | |
12033 | stub_entry->group->stub_sec->reloc_count += 1; | |
12034 | stub_entry->group->stub_sec->flags |= SEC_RELOC; | |
12035 | } | |
12036 | break; | |
12037 | ||
12038 | case ppc_stub_plt_branch_notoc: | |
12039 | case ppc_stub_plt_branch_both: | |
12040 | stub_entry->stub_type += ppc_stub_long_branch - ppc_stub_plt_branch; | |
12041 | /* Fall through. */ | |
12042 | case ppc_stub_long_branch_notoc: | |
12043 | case ppc_stub_long_branch_both: | |
12044 | off = (stub_entry->stub_offset | |
12045 | + stub_entry->group->stub_sec->output_offset | |
12046 | + stub_entry->group->stub_sec->output_section->vma); | |
12047 | size = 0; | |
12048 | if (stub_entry->stub_type == ppc_stub_long_branch_both) | |
12049 | size = 4; | |
12050 | off += size; | |
12051 | targ = (stub_entry->target_value | |
12052 | + stub_entry->target_section->output_offset | |
12053 | + stub_entry->target_section->output_section->vma); | |
04bdff6a | 12054 | odd = off & 4; |
f891966f AM |
12055 | off = targ - off; |
12056 | ||
3d58e1fc AM |
12057 | if (info->emitrelocations) |
12058 | { | |
04bdff6a | 12059 | unsigned int num_rel; |
d349c8e2 | 12060 | if (htab->params->power10_stubs != 0) |
7c1f4227 | 12061 | num_rel = num_relocs_for_power10_offset (off, odd); |
04bdff6a AM |
12062 | else |
12063 | num_rel = num_relocs_for_offset (off - 8); | |
12064 | stub_entry->group->stub_sec->reloc_count += num_rel; | |
3d58e1fc AM |
12065 | stub_entry->group->stub_sec->flags |= SEC_RELOC; |
12066 | } | |
12067 | ||
d349c8e2 | 12068 | if (htab->params->power10_stubs != 0) |
7c1f4227 | 12069 | extra = size_power10_offset (off, odd); |
04bdff6a AM |
12070 | else |
12071 | extra = size_offset (off - 8); | |
f891966f AM |
12072 | /* Include branch insn plus those in the offset sequence. */ |
12073 | size += 4 + extra; | |
12074 | /* The branch insn is at the end, or "extra" bytes along. So | |
12075 | its offset will be "extra" bytes less that that already | |
12076 | calculated. */ | |
12077 | off -= extra; | |
12078 | ||
d349c8e2 | 12079 | if (htab->params->power10_stubs == 0) |
04bdff6a AM |
12080 | { |
12081 | /* After the bcl, lr has been modified so we need to emit | |
12082 | .eh_frame info saying the return address is in r12. */ | |
12083 | lr_used = stub_entry->stub_offset + 8; | |
12084 | if (stub_entry->stub_type == ppc_stub_long_branch_both) | |
12085 | lr_used += 4; | |
12086 | /* The eh_frame info will consist of a DW_CFA_advance_loc or | |
12087 | variant, DW_CFA_register, 65, 12, DW_CFA_advance_loc+2, | |
12088 | DW_CFA_restore_extended 65. */ | |
12089 | delta = lr_used - stub_entry->group->lr_restore; | |
12090 | stub_entry->group->eh_size += eh_advance_size (delta) + 6; | |
12091 | stub_entry->group->lr_restore = lr_used + 8; | |
12092 | } | |
f891966f AM |
12093 | |
12094 | /* If the branch can't reach, use a plt_branch. */ | |
12095 | if (off + (1 << 25) >= (bfd_vma) (1 << 26)) | |
12096 | { | |
12097 | stub_entry->stub_type += (ppc_stub_plt_branch_notoc | |
12098 | - ppc_stub_long_branch_notoc); | |
12099 | size += 4; | |
12100 | } | |
3d58e1fc AM |
12101 | else if (info->emitrelocations) |
12102 | stub_entry->group->stub_sec->reloc_count +=1; | |
f891966f AM |
12103 | break; |
12104 | ||
12105 | case ppc_stub_plt_call_notoc: | |
12106 | case ppc_stub_plt_call_both: | |
12107 | off = (stub_entry->stub_offset | |
12108 | + stub_entry->group->stub_sec->output_offset | |
12109 | + stub_entry->group->stub_sec->output_section->vma); | |
12110 | if (stub_entry->stub_type == ppc_stub_plt_call_both) | |
12111 | off += 4; | |
12112 | targ = stub_entry->plt_ent->plt.offset & ~1; | |
12113 | if (targ >= (bfd_vma) -2) | |
12114 | abort (); | |
12115 | ||
12116 | plt = htab->elf.splt; | |
12117 | if (!htab->elf.dynamic_sections_created | |
12118 | || stub_entry->h == NULL | |
12119 | || stub_entry->h->elf.dynindx == -1) | |
12120 | { | |
12121 | if (stub_entry->symtype == STT_GNU_IFUNC) | |
12122 | plt = htab->elf.iplt; | |
12123 | else | |
12124 | plt = htab->pltlocal; | |
12125 | } | |
12126 | targ += plt->output_offset + plt->output_section->vma; | |
04bdff6a | 12127 | odd = off & 4; |
f891966f AM |
12128 | off = targ - off; |
12129 | ||
12130 | if (htab->params->plt_stub_align != 0) | |
12131 | { | |
12132 | unsigned pad = plt_stub_pad (htab, stub_entry, off); | |
12133 | ||
12134 | stub_entry->group->stub_sec->size += pad; | |
12135 | stub_entry->stub_offset = stub_entry->group->stub_sec->size; | |
12136 | off -= pad; | |
12137 | } | |
12138 | ||
3d58e1fc AM |
12139 | if (info->emitrelocations) |
12140 | { | |
04bdff6a | 12141 | unsigned int num_rel; |
d349c8e2 | 12142 | if (htab->params->power10_stubs != 0) |
7c1f4227 | 12143 | num_rel = num_relocs_for_power10_offset (off, odd); |
04bdff6a AM |
12144 | else |
12145 | num_rel = num_relocs_for_offset (off - 8); | |
12146 | stub_entry->group->stub_sec->reloc_count += num_rel; | |
3d58e1fc AM |
12147 | stub_entry->group->stub_sec->flags |= SEC_RELOC; |
12148 | } | |
12149 | ||
f891966f AM |
12150 | size = plt_stub_size (htab, stub_entry, off); |
12151 | ||
d349c8e2 | 12152 | if (htab->params->power10_stubs == 0) |
04bdff6a AM |
12153 | { |
12154 | /* After the bcl, lr has been modified so we need to emit | |
12155 | .eh_frame info saying the return address is in r12. */ | |
12156 | lr_used = stub_entry->stub_offset + 8; | |
12157 | if (stub_entry->stub_type == ppc_stub_plt_call_both) | |
12158 | lr_used += 4; | |
12159 | /* The eh_frame info will consist of a DW_CFA_advance_loc or | |
12160 | variant, DW_CFA_register, 65, 12, DW_CFA_advance_loc+2, | |
12161 | DW_CFA_restore_extended 65. */ | |
12162 | delta = lr_used - stub_entry->group->lr_restore; | |
12163 | stub_entry->group->eh_size += eh_advance_size (delta) + 6; | |
12164 | stub_entry->group->lr_restore = lr_used + 8; | |
12165 | } | |
f891966f AM |
12166 | break; |
12167 | ||
12168 | case ppc_stub_plt_call: | |
12169 | case ppc_stub_plt_call_r2save: | |
12170 | targ = stub_entry->plt_ent->plt.offset & ~(bfd_vma) 1; | |
12171 | if (targ >= (bfd_vma) -2) | |
12172 | abort (); | |
12173 | plt = htab->elf.splt; | |
12174 | if (!htab->elf.dynamic_sections_created | |
12175 | || stub_entry->h == NULL | |
12176 | || stub_entry->h->elf.dynindx == -1) | |
12177 | { | |
12178 | if (stub_entry->symtype == STT_GNU_IFUNC) | |
12179 | plt = htab->elf.iplt; | |
12180 | else | |
12181 | plt = htab->pltlocal; | |
12182 | } | |
12183 | targ += plt->output_offset + plt->output_section->vma; | |
12184 | ||
12185 | off = (elf_gp (info->output_bfd) | |
12186 | + htab->sec_info[stub_entry->group->link_sec->id].toc_off); | |
12187 | off = targ - off; | |
12188 | ||
12189 | if (htab->params->plt_stub_align != 0) | |
12190 | { | |
12191 | unsigned pad = plt_stub_pad (htab, stub_entry, off); | |
12192 | ||
12193 | stub_entry->group->stub_sec->size += pad; | |
12194 | stub_entry->stub_offset = stub_entry->group->stub_sec->size; | |
12195 | } | |
12196 | ||
12197 | if (info->emitrelocations) | |
12198 | { | |
12199 | stub_entry->group->stub_sec->reloc_count | |
12200 | += ((PPC_HA (off) != 0) | |
12201 | + (htab->opd_abi | |
12202 | ? 2 + (htab->params->plt_static_chain | |
12203 | && PPC_HA (off + 16) == PPC_HA (off)) | |
12204 | : 1)); | |
12205 | stub_entry->group->stub_sec->flags |= SEC_RELOC; | |
12206 | } | |
12207 | ||
12208 | size = plt_stub_size (htab, stub_entry, off); | |
12209 | ||
12210 | if (stub_entry->h != NULL | |
ed7007c1 | 12211 | && is_tls_get_addr (&stub_entry->h->elf, htab) |
f891966f AM |
12212 | && htab->params->tls_get_addr_opt |
12213 | && stub_entry->stub_type == ppc_stub_plt_call_r2save) | |
12214 | { | |
9e7028aa AM |
12215 | if (htab->params->no_tls_get_addr_regsave) |
12216 | { | |
12217 | lr_used = stub_entry->stub_offset + size - 20; | |
12218 | /* The eh_frame info will consist of a DW_CFA_advance_loc | |
12219 | or variant, DW_CFA_offset_externed_sf, 65, -stackoff, | |
12220 | DW_CFA_advance_loc+4, DW_CFA_restore_extended, 65. */ | |
12221 | delta = lr_used - stub_entry->group->lr_restore; | |
12222 | stub_entry->group->eh_size += eh_advance_size (delta) + 6; | |
12223 | } | |
12224 | else | |
12225 | { | |
12226 | /* Adjustments to r1 need to be described. */ | |
12227 | unsigned int cfa_updt = stub_entry->stub_offset + 18 * 4; | |
12228 | delta = cfa_updt - stub_entry->group->lr_restore; | |
12229 | stub_entry->group->eh_size += eh_advance_size (delta); | |
12230 | stub_entry->group->eh_size += htab->opd_abi ? 36 : 35; | |
12231 | } | |
f891966f AM |
12232 | stub_entry->group->lr_restore = size - 4; |
12233 | } | |
12234 | break; | |
12235 | ||
12236 | default: | |
12237 | BFD_FAIL (); | |
12238 | return FALSE; | |
721956f4 AM |
12239 | } |
12240 | ||
6f20ed8a | 12241 | stub_entry->group->stub_sec->size += size; |
b34976b6 | 12242 | return TRUE; |
721956f4 AM |
12243 | } |
12244 | ||
12245 | /* Set up various things so that we can make a list of input sections | |
12246 | for each output section included in the link. Returns -1 on error, | |
cedb70c5 | 12247 | 0 when no stubs will be needed, and 1 on success. */ |
721956f4 AM |
12248 | |
12249 | int | |
e7d1c40c | 12250 | ppc64_elf_setup_section_lists (struct bfd_link_info *info) |
721956f4 | 12251 | { |
6f20ed8a | 12252 | unsigned int id; |
986f0783 | 12253 | size_t amt; |
721956f4 AM |
12254 | struct ppc_link_hash_table *htab = ppc_hash_table (info); |
12255 | ||
4dfe6ac6 NC |
12256 | if (htab == NULL) |
12257 | return -1; | |
4c52953f | 12258 | |
7cf7fcc8 | 12259 | htab->sec_info_arr_size = _bfd_section_id; |
6f20ed8a AM |
12260 | amt = sizeof (*htab->sec_info) * (htab->sec_info_arr_size); |
12261 | htab->sec_info = bfd_zmalloc (amt); | |
12262 | if (htab->sec_info == NULL) | |
721956f4 AM |
12263 | return -1; |
12264 | ||
3d6f9012 AM |
12265 | /* Set toc_off for com, und, abs and ind sections. */ |
12266 | for (id = 0; id < 3; id++) | |
6f20ed8a | 12267 | htab->sec_info[id].toc_off = TOC_BASE_OFF; |
734b6cf9 | 12268 | |
721956f4 AM |
12269 | return 1; |
12270 | } | |
12271 | ||
927be08e AM |
12272 | /* Set up for first pass at multitoc partitioning. */ |
12273 | ||
12274 | void | |
12275 | ppc64_elf_start_multitoc_partition (struct bfd_link_info *info) | |
12276 | { | |
12277 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
12278 | ||
1c865ab2 | 12279 | htab->toc_curr = ppc64_elf_set_toc (info, info->output_bfd); |
927be08e AM |
12280 | htab->toc_bfd = NULL; |
12281 | htab->toc_first_sec = NULL; | |
12282 | } | |
12283 | ||
e717da7e AM |
12284 | /* The linker repeatedly calls this function for each TOC input section |
12285 | and linker generated GOT section. Group input bfds such that the toc | |
927be08e | 12286 | within a group is less than 64k in size. */ |
ad8e1ba5 | 12287 | |
927be08e | 12288 | bfd_boolean |
4ce794b7 | 12289 | ppc64_elf_next_toc_section (struct bfd_link_info *info, asection *isec) |
ad8e1ba5 AM |
12290 | { |
12291 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
d77c8a4b | 12292 | bfd_vma addr, off, limit; |
ad8e1ba5 | 12293 | |
4dfe6ac6 NC |
12294 | if (htab == NULL) |
12295 | return FALSE; | |
12296 | ||
927be08e | 12297 | if (!htab->second_toc_pass) |
4c52953f | 12298 | { |
927be08e | 12299 | /* Keep track of the first .toc or .got section for this input bfd. */ |
a4fd3de5 AM |
12300 | bfd_boolean new_bfd = htab->toc_bfd != isec->owner; |
12301 | ||
12302 | if (new_bfd) | |
bf102f86 AM |
12303 | { |
12304 | htab->toc_bfd = isec->owner; | |
12305 | htab->toc_first_sec = isec; | |
12306 | } | |
927be08e | 12307 | |
bf102f86 AM |
12308 | addr = isec->output_offset + isec->output_section->vma; |
12309 | off = addr - htab->toc_curr; | |
d77c8a4b AM |
12310 | limit = 0x80008000; |
12311 | if (ppc64_elf_tdata (isec->owner)->has_small_toc_reloc) | |
12312 | limit = 0x10000; | |
12313 | if (off + isec->size > limit) | |
bf102f86 AM |
12314 | { |
12315 | addr = (htab->toc_first_sec->output_offset | |
12316 | + htab->toc_first_sec->output_section->vma); | |
12317 | htab->toc_curr = addr; | |
a27e685f | 12318 | htab->toc_curr &= -TOC_BASE_ALIGN; |
bf102f86 | 12319 | } |
99877b66 | 12320 | |
927be08e AM |
12321 | /* toc_curr is the base address of this toc group. Set elf_gp |
12322 | for the input section to be the offset relative to the | |
12323 | output toc base plus 0x8000. Making the input elf_gp an | |
12324 | offset allows us to move the toc as a whole without | |
12325 | recalculating input elf_gp. */ | |
06bcf541 | 12326 | off = htab->toc_curr - elf_gp (info->output_bfd); |
927be08e AM |
12327 | off += TOC_BASE_OFF; |
12328 | ||
12329 | /* Die if someone uses a linker script that doesn't keep input | |
12330 | file .toc and .got together. */ | |
a4fd3de5 AM |
12331 | if (new_bfd |
12332 | && elf_gp (isec->owner) != 0 | |
927be08e AM |
12333 | && elf_gp (isec->owner) != off) |
12334 | return FALSE; | |
12335 | ||
12336 | elf_gp (isec->owner) = off; | |
12337 | return TRUE; | |
4c52953f | 12338 | } |
927be08e AM |
12339 | |
12340 | /* During the second pass toc_first_sec points to the start of | |
12341 | a toc group, and toc_curr is used to track the old elf_gp. | |
12342 | We use toc_bfd to ensure we only look at each bfd once. */ | |
12343 | if (htab->toc_bfd == isec->owner) | |
12344 | return TRUE; | |
12345 | htab->toc_bfd = isec->owner; | |
12346 | ||
12347 | if (htab->toc_first_sec == NULL | |
12348 | || htab->toc_curr != elf_gp (isec->owner)) | |
12349 | { | |
12350 | htab->toc_curr = elf_gp (isec->owner); | |
12351 | htab->toc_first_sec = isec; | |
12352 | } | |
12353 | addr = (htab->toc_first_sec->output_offset | |
12354 | + htab->toc_first_sec->output_section->vma); | |
06bcf541 | 12355 | off = addr - elf_gp (info->output_bfd) + TOC_BASE_OFF; |
927be08e AM |
12356 | elf_gp (isec->owner) = off; |
12357 | ||
12358 | return TRUE; | |
ad8e1ba5 AM |
12359 | } |
12360 | ||
927be08e AM |
12361 | /* Called via elf_link_hash_traverse to merge GOT entries for global |
12362 | symbol H. */ | |
12363 | ||
12364 | static bfd_boolean | |
12365 | merge_global_got (struct elf_link_hash_entry *h, void *inf ATTRIBUTE_UNUSED) | |
12366 | { | |
12367 | if (h->root.type == bfd_link_hash_indirect) | |
12368 | return TRUE; | |
12369 | ||
927be08e AM |
12370 | merge_got_entries (&h->got.glist); |
12371 | ||
12372 | return TRUE; | |
12373 | } | |
12374 | ||
12375 | /* Called via elf_link_hash_traverse to allocate GOT entries for global | |
12376 | symbol H. */ | |
12377 | ||
12378 | static bfd_boolean | |
12379 | reallocate_got (struct elf_link_hash_entry *h, void *inf) | |
12380 | { | |
12381 | struct got_entry *gent; | |
12382 | ||
12383 | if (h->root.type == bfd_link_hash_indirect) | |
12384 | return TRUE; | |
12385 | ||
927be08e AM |
12386 | for (gent = h->got.glist; gent != NULL; gent = gent->next) |
12387 | if (!gent->is_indirect) | |
12388 | allocate_got (h, (struct bfd_link_info *) inf, gent); | |
12389 | return TRUE; | |
12390 | } | |
12391 | ||
12392 | /* Called on the first multitoc pass after the last call to | |
12393 | ppc64_elf_next_toc_section. This function removes duplicate GOT | |
12394 | entries. */ | |
12395 | ||
12396 | bfd_boolean | |
12397 | ppc64_elf_layout_multitoc (struct bfd_link_info *info) | |
ad8e1ba5 AM |
12398 | { |
12399 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
927be08e AM |
12400 | struct bfd *ibfd, *ibfd2; |
12401 | bfd_boolean done_something; | |
12402 | ||
12403 | htab->multi_toc_needed = htab->toc_curr != elf_gp (info->output_bfd); | |
ad8e1ba5 | 12404 | |
7865406b AM |
12405 | if (!htab->do_multi_toc) |
12406 | return FALSE; | |
12407 | ||
d0fae19d | 12408 | /* Merge global sym got entries within a toc group. */ |
927be08e AM |
12409 | elf_link_hash_traverse (&htab->elf, merge_global_got, info); |
12410 | ||
12411 | /* And tlsld_got. */ | |
c72f2fb2 | 12412 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next) |
927be08e AM |
12413 | { |
12414 | struct got_entry *ent, *ent2; | |
12415 | ||
12416 | if (!is_ppc64_elf (ibfd)) | |
12417 | continue; | |
12418 | ||
12419 | ent = ppc64_tlsld_got (ibfd); | |
12420 | if (!ent->is_indirect | |
12421 | && ent->got.offset != (bfd_vma) -1) | |
12422 | { | |
c72f2fb2 | 12423 | for (ibfd2 = ibfd->link.next; ibfd2 != NULL; ibfd2 = ibfd2->link.next) |
927be08e AM |
12424 | { |
12425 | if (!is_ppc64_elf (ibfd2)) | |
12426 | continue; | |
12427 | ||
12428 | ent2 = ppc64_tlsld_got (ibfd2); | |
12429 | if (!ent2->is_indirect | |
12430 | && ent2->got.offset != (bfd_vma) -1 | |
12431 | && elf_gp (ibfd2) == elf_gp (ibfd)) | |
12432 | { | |
12433 | ent2->is_indirect = TRUE; | |
12434 | ent2->got.ent = ent; | |
12435 | } | |
12436 | } | |
12437 | } | |
12438 | } | |
12439 | ||
12440 | /* Zap sizes of got sections. */ | |
33e44f2e AM |
12441 | htab->elf.irelplt->rawsize = htab->elf.irelplt->size; |
12442 | htab->elf.irelplt->size -= htab->got_reli_size; | |
927be08e AM |
12443 | htab->got_reli_size = 0; |
12444 | ||
c72f2fb2 | 12445 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next) |
927be08e AM |
12446 | { |
12447 | asection *got, *relgot; | |
12448 | ||
12449 | if (!is_ppc64_elf (ibfd)) | |
12450 | continue; | |
12451 | ||
12452 | got = ppc64_elf_tdata (ibfd)->got; | |
12453 | if (got != NULL) | |
12454 | { | |
12455 | got->rawsize = got->size; | |
12456 | got->size = 0; | |
12457 | relgot = ppc64_elf_tdata (ibfd)->relgot; | |
12458 | relgot->rawsize = relgot->size; | |
12459 | relgot->size = 0; | |
12460 | } | |
12461 | } | |
12462 | ||
12463 | /* Now reallocate the got, local syms first. We don't need to | |
12464 | allocate section contents again since we never increase size. */ | |
c72f2fb2 | 12465 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next) |
927be08e AM |
12466 | { |
12467 | struct got_entry **lgot_ents; | |
12468 | struct got_entry **end_lgot_ents; | |
12469 | struct plt_entry **local_plt; | |
12470 | struct plt_entry **end_local_plt; | |
f961d9dd | 12471 | unsigned char *lgot_masks; |
927be08e AM |
12472 | bfd_size_type locsymcount; |
12473 | Elf_Internal_Shdr *symtab_hdr; | |
19e08130 | 12474 | asection *s; |
927be08e AM |
12475 | |
12476 | if (!is_ppc64_elf (ibfd)) | |
12477 | continue; | |
12478 | ||
12479 | lgot_ents = elf_local_got_ents (ibfd); | |
12480 | if (!lgot_ents) | |
12481 | continue; | |
12482 | ||
12483 | symtab_hdr = &elf_symtab_hdr (ibfd); | |
12484 | locsymcount = symtab_hdr->sh_info; | |
12485 | end_lgot_ents = lgot_ents + locsymcount; | |
12486 | local_plt = (struct plt_entry **) end_lgot_ents; | |
12487 | end_local_plt = local_plt + locsymcount; | |
f961d9dd | 12488 | lgot_masks = (unsigned char *) end_local_plt; |
927be08e | 12489 | s = ppc64_elf_tdata (ibfd)->got; |
927be08e AM |
12490 | for (; lgot_ents < end_lgot_ents; ++lgot_ents, ++lgot_masks) |
12491 | { | |
12492 | struct got_entry *ent; | |
12493 | ||
12494 | for (ent = *lgot_ents; ent != NULL; ent = ent->next) | |
d0fae19d | 12495 | { |
19e08130 AM |
12496 | unsigned int ent_size = 8; |
12497 | unsigned int rel_size = sizeof (Elf64_External_Rela); | |
12498 | ||
d0fae19d AM |
12499 | ent->got.offset = s->size; |
12500 | if ((ent->tls_type & *lgot_masks & TLS_GD) != 0) | |
d0fae19d | 12501 | { |
19e08130 AM |
12502 | ent_size *= 2; |
12503 | rel_size *= 2; | |
12504 | } | |
12505 | s->size += ent_size; | |
37da22e5 | 12506 | if ((*lgot_masks & (TLS_TLS | PLT_IFUNC)) == PLT_IFUNC) |
19e08130 | 12507 | { |
33e44f2e | 12508 | htab->elf.irelplt->size += rel_size; |
19e08130 AM |
12509 | htab->got_reli_size += rel_size; |
12510 | } | |
6a3858a6 | 12511 | else if (bfd_link_pic (info) |
f749f26e | 12512 | && !(ent->tls_type != 0 |
6a3858a6 | 12513 | && bfd_link_executable (info))) |
19e08130 AM |
12514 | { |
12515 | asection *srel = ppc64_elf_tdata (ibfd)->relgot; | |
12516 | srel->size += rel_size; | |
d0fae19d AM |
12517 | } |
12518 | } | |
927be08e AM |
12519 | } |
12520 | } | |
12521 | ||
12522 | elf_link_hash_traverse (&htab->elf, reallocate_got, info); | |
12523 | ||
c72f2fb2 | 12524 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next) |
927be08e AM |
12525 | { |
12526 | struct got_entry *ent; | |
12527 | ||
12528 | if (!is_ppc64_elf (ibfd)) | |
12529 | continue; | |
12530 | ||
12531 | ent = ppc64_tlsld_got (ibfd); | |
12532 | if (!ent->is_indirect | |
12533 | && ent->got.offset != (bfd_vma) -1) | |
12534 | { | |
12535 | asection *s = ppc64_elf_tdata (ibfd)->got; | |
12536 | ent->got.offset = s->size; | |
12537 | s->size += 16; | |
f749f26e | 12538 | if (bfd_link_dll (info)) |
927be08e AM |
12539 | { |
12540 | asection *srel = ppc64_elf_tdata (ibfd)->relgot; | |
12541 | srel->size += sizeof (Elf64_External_Rela); | |
12542 | } | |
12543 | } | |
12544 | } | |
12545 | ||
33e44f2e | 12546 | done_something = htab->elf.irelplt->rawsize != htab->elf.irelplt->size; |
927be08e | 12547 | if (!done_something) |
c72f2fb2 | 12548 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next) |
927be08e AM |
12549 | { |
12550 | asection *got; | |
12551 | ||
12552 | if (!is_ppc64_elf (ibfd)) | |
12553 | continue; | |
12554 | ||
12555 | got = ppc64_elf_tdata (ibfd)->got; | |
12556 | if (got != NULL) | |
12557 | { | |
12558 | done_something = got->rawsize != got->size; | |
12559 | if (done_something) | |
12560 | break; | |
12561 | } | |
12562 | } | |
12563 | ||
12564 | if (done_something) | |
e7d1c40c | 12565 | (*htab->params->layout_sections_again) (); |
927be08e AM |
12566 | |
12567 | /* Set up for second pass over toc sections to recalculate elf_gp | |
12568 | on input sections. */ | |
12569 | htab->toc_bfd = NULL; | |
12570 | htab->toc_first_sec = NULL; | |
12571 | htab->second_toc_pass = TRUE; | |
12572 | return done_something; | |
12573 | } | |
12574 | ||
12575 | /* Called after second pass of multitoc partitioning. */ | |
12576 | ||
12577 | void | |
12578 | ppc64_elf_finish_multitoc_partition (struct bfd_link_info *info) | |
12579 | { | |
12580 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
12581 | ||
12582 | /* After the second pass, toc_curr tracks the TOC offset used | |
12583 | for code sections below in ppc64_elf_next_input_section. */ | |
3d6f9012 | 12584 | htab->toc_curr = TOC_BASE_OFF; |
ad8e1ba5 AM |
12585 | } |
12586 | ||
9b5ecbd0 AM |
12587 | /* No toc references were found in ISEC. If the code in ISEC makes no |
12588 | calls, then there's no need to use toc adjusting stubs when branching | |
12589 | into ISEC. Actually, indirect calls from ISEC are OK as they will | |
4c52953f AM |
12590 | load r2. Returns -1 on error, 0 for no stub needed, 1 for stub |
12591 | needed, and 2 if a cyclical call-graph was found but no other reason | |
12592 | for a stub was detected. If called from the top level, a return of | |
12593 | 2 means the same as a return of 0. */ | |
9b5ecbd0 AM |
12594 | |
12595 | static int | |
4ce794b7 | 12596 | toc_adjusting_stub_needed (struct bfd_link_info *info, asection *isec) |
9b5ecbd0 | 12597 | { |
9b5ecbd0 | 12598 | int ret; |
70cc837d AM |
12599 | |
12600 | /* Mark this section as checked. */ | |
12601 | isec->call_check_done = 1; | |
9b5ecbd0 | 12602 | |
772119ce AM |
12603 | /* We know none of our code bearing sections will need toc stubs. */ |
12604 | if ((isec->flags & SEC_LINKER_CREATED) != 0) | |
12605 | return 0; | |
12606 | ||
eea6121a | 12607 | if (isec->size == 0) |
082c50f8 AM |
12608 | return 0; |
12609 | ||
4c52953f AM |
12610 | if (isec->output_section == NULL) |
12611 | return 0; | |
12612 | ||
4c52953f | 12613 | ret = 0; |
70cc837d | 12614 | if (isec->reloc_count != 0) |
9b5ecbd0 | 12615 | { |
70cc837d AM |
12616 | Elf_Internal_Rela *relstart, *rel; |
12617 | Elf_Internal_Sym *local_syms; | |
12618 | struct ppc_link_hash_table *htab; | |
2917689a | 12619 | |
70cc837d AM |
12620 | relstart = _bfd_elf_link_read_relocs (isec->owner, isec, NULL, NULL, |
12621 | info->keep_memory); | |
12622 | if (relstart == NULL) | |
12623 | return -1; | |
90aecf7a | 12624 | |
70cc837d AM |
12625 | /* Look for branches to outside of this section. */ |
12626 | local_syms = NULL; | |
12627 | htab = ppc_hash_table (info); | |
12628 | if (htab == NULL) | |
12629 | return -1; | |
4c52953f | 12630 | |
70cc837d | 12631 | for (rel = relstart; rel < relstart + isec->reloc_count; ++rel) |
4c52953f | 12632 | { |
70cc837d AM |
12633 | enum elf_ppc64_reloc_type r_type; |
12634 | unsigned long r_symndx; | |
12635 | struct elf_link_hash_entry *h; | |
12636 | struct ppc_link_hash_entry *eh; | |
12637 | Elf_Internal_Sym *sym; | |
12638 | asection *sym_sec; | |
12639 | struct _opd_sec_data *opd; | |
12640 | bfd_vma sym_value; | |
12641 | bfd_vma dest; | |
12642 | ||
12643 | r_type = ELF64_R_TYPE (rel->r_info); | |
12644 | if (r_type != R_PPC64_REL24 | |
05d0e962 | 12645 | && r_type != R_PPC64_REL24_NOTOC |
70cc837d AM |
12646 | && r_type != R_PPC64_REL14 |
12647 | && r_type != R_PPC64_REL14_BRTAKEN | |
23cedd1d | 12648 | && r_type != R_PPC64_REL14_BRNTAKEN |
5663e321 AM |
12649 | && r_type != R_PPC64_PLTCALL |
12650 | && r_type != R_PPC64_PLTCALL_NOTOC) | |
70cc837d | 12651 | continue; |
4c52953f | 12652 | |
70cc837d AM |
12653 | r_symndx = ELF64_R_SYM (rel->r_info); |
12654 | if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, r_symndx, | |
12655 | isec->owner)) | |
4c52953f | 12656 | { |
70cc837d AM |
12657 | ret = -1; |
12658 | break; | |
12659 | } | |
4c52953f | 12660 | |
70cc837d AM |
12661 | /* Calls to dynamic lib functions go through a plt call stub |
12662 | that uses r2. */ | |
ed7007c1 | 12663 | eh = ppc_elf_hash_entry (h); |
70cc837d AM |
12664 | if (eh != NULL |
12665 | && (eh->elf.plt.plist != NULL | |
12666 | || (eh->oh != NULL | |
12667 | && ppc_follow_link (eh->oh)->elf.plt.plist != NULL))) | |
12668 | { | |
12669 | ret = 1; | |
12670 | break; | |
4c52953f AM |
12671 | } |
12672 | ||
70cc837d AM |
12673 | if (sym_sec == NULL) |
12674 | /* Ignore other undefined symbols. */ | |
4c52953f | 12675 | continue; |
4c52953f | 12676 | |
70cc837d AM |
12677 | /* Assume branches to other sections not included in the |
12678 | link need stubs too, to cover -R and absolute syms. */ | |
12679 | if (sym_sec->output_section == NULL) | |
12680 | { | |
12681 | ret = 1; | |
12682 | break; | |
12683 | } | |
4c52953f | 12684 | |
70cc837d AM |
12685 | if (h == NULL) |
12686 | sym_value = sym->st_value; | |
12687 | else | |
12688 | { | |
12689 | if (h->root.type != bfd_link_hash_defined | |
12690 | && h->root.type != bfd_link_hash_defweak) | |
12691 | abort (); | |
12692 | sym_value = h->root.u.def.value; | |
12693 | } | |
12694 | sym_value += rel->r_addend; | |
4c52953f | 12695 | |
70cc837d AM |
12696 | /* If this branch reloc uses an opd sym, find the code section. */ |
12697 | opd = get_opd_info (sym_sec); | |
12698 | if (opd != NULL) | |
12699 | { | |
12700 | if (h == NULL && opd->adjust != NULL) | |
12701 | { | |
12702 | long adjust; | |
4c52953f | 12703 | |
92a9c616 | 12704 | adjust = opd->adjust[OPD_NDX (sym_value)]; |
70cc837d AM |
12705 | if (adjust == -1) |
12706 | /* Assume deleted functions won't ever be called. */ | |
12707 | continue; | |
12708 | sym_value += adjust; | |
12709 | } | |
4c52953f | 12710 | |
aef36ac1 AM |
12711 | dest = opd_entry_value (sym_sec, sym_value, |
12712 | &sym_sec, NULL, FALSE); | |
70cc837d AM |
12713 | if (dest == (bfd_vma) -1) |
12714 | continue; | |
12715 | } | |
12716 | else | |
12717 | dest = (sym_value | |
12718 | + sym_sec->output_offset | |
12719 | + sym_sec->output_section->vma); | |
4c52953f | 12720 | |
70cc837d AM |
12721 | /* Ignore branch to self. */ |
12722 | if (sym_sec == isec) | |
12723 | continue; | |
4c52953f | 12724 | |
70cc837d AM |
12725 | /* If the called function uses the toc, we need a stub. */ |
12726 | if (sym_sec->has_toc_reloc | |
12727 | || sym_sec->makes_toc_func_call) | |
4c52953f | 12728 | { |
70cc837d | 12729 | ret = 1; |
4c52953f AM |
12730 | break; |
12731 | } | |
70cc837d AM |
12732 | |
12733 | /* Assume any branch that needs a long branch stub might in fact | |
12734 | need a plt_branch stub. A plt_branch stub uses r2. */ | |
12735 | else if (dest - (isec->output_offset | |
12736 | + isec->output_section->vma | |
6911b7dc AM |
12737 | + rel->r_offset) + (1 << 25) |
12738 | >= (2u << 25) - PPC64_LOCAL_ENTRY_OFFSET (h | |
12739 | ? h->other | |
12740 | : sym->st_other)) | |
4c52953f | 12741 | { |
70cc837d AM |
12742 | ret = 1; |
12743 | break; | |
12744 | } | |
12745 | ||
12746 | /* If calling back to a section in the process of being | |
12747 | tested, we can't say for sure that no toc adjusting stubs | |
12748 | are needed, so don't return zero. */ | |
12749 | else if (sym_sec->call_check_in_progress) | |
12750 | ret = 2; | |
12751 | ||
12752 | /* Branches to another section that itself doesn't have any TOC | |
12753 | references are OK. Recursively call ourselves to check. */ | |
12754 | else if (!sym_sec->call_check_done) | |
12755 | { | |
12756 | int recur; | |
12757 | ||
12758 | /* Mark current section as indeterminate, so that other | |
12759 | sections that call back to current won't be marked as | |
12760 | known. */ | |
12761 | isec->call_check_in_progress = 1; | |
12762 | recur = toc_adjusting_stub_needed (info, sym_sec); | |
12763 | isec->call_check_in_progress = 0; | |
12764 | ||
4c52953f AM |
12765 | if (recur != 0) |
12766 | { | |
70cc837d AM |
12767 | ret = recur; |
12768 | if (recur != 2) | |
12769 | break; | |
4c52953f AM |
12770 | } |
12771 | } | |
4c52953f | 12772 | } |
70cc837d | 12773 | |
c9594989 AM |
12774 | if (elf_symtab_hdr (isec->owner).contents |
12775 | != (unsigned char *) local_syms) | |
70cc837d AM |
12776 | free (local_syms); |
12777 | if (elf_section_data (isec)->relocs != relstart) | |
12778 | free (relstart); | |
9b5ecbd0 AM |
12779 | } |
12780 | ||
70cc837d AM |
12781 | if ((ret & 1) == 0 |
12782 | && isec->map_head.s != NULL | |
12783 | && (strcmp (isec->output_section->name, ".init") == 0 | |
12784 | || strcmp (isec->output_section->name, ".fini") == 0)) | |
12785 | { | |
12786 | if (isec->map_head.s->has_toc_reloc | |
12787 | || isec->map_head.s->makes_toc_func_call) | |
12788 | ret = 1; | |
12789 | else if (!isec->map_head.s->call_check_done) | |
12790 | { | |
12791 | int recur; | |
12792 | isec->call_check_in_progress = 1; | |
12793 | recur = toc_adjusting_stub_needed (info, isec->map_head.s); | |
12794 | isec->call_check_in_progress = 0; | |
12795 | if (recur != 0) | |
12796 | ret = recur; | |
12797 | } | |
12798 | } | |
12799 | ||
12800 | if (ret == 1) | |
12801 | isec->makes_toc_func_call = 1; | |
4c52953f | 12802 | |
9b5ecbd0 AM |
12803 | return ret; |
12804 | } | |
12805 | ||
721956f4 AM |
12806 | /* The linker repeatedly calls this function for each input section, |
12807 | in the order that input sections are linked into output sections. | |
12808 | Build lists of input sections to determine groupings between which | |
12809 | we may insert linker stubs. */ | |
12810 | ||
9b5ecbd0 | 12811 | bfd_boolean |
4ce794b7 | 12812 | ppc64_elf_next_input_section (struct bfd_link_info *info, asection *isec) |
721956f4 AM |
12813 | { |
12814 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
12815 | ||
4dfe6ac6 NC |
12816 | if (htab == NULL) |
12817 | return FALSE; | |
12818 | ||
734b6cf9 | 12819 | if ((isec->output_section->flags & SEC_CODE) != 0 |
6f20ed8a | 12820 | && isec->output_section->id < htab->sec_info_arr_size) |
721956f4 | 12821 | { |
3d6f9012 AM |
12822 | /* This happens to make the list in reverse order, |
12823 | which is what we want. */ | |
6f20ed8a AM |
12824 | htab->sec_info[isec->id].u.list |
12825 | = htab->sec_info[isec->output_section->id].u.list; | |
12826 | htab->sec_info[isec->output_section->id].u.list = isec; | |
721956f4 | 12827 | } |
ad8e1ba5 | 12828 | |
4c52953f | 12829 | if (htab->multi_toc_needed) |
9b5ecbd0 | 12830 | { |
8b974ba3 AM |
12831 | /* Analyse sections that aren't already flagged as needing a |
12832 | valid toc pointer. Exclude .fixup for the linux kernel. | |
12833 | .fixup contains branches, but only back to the function that | |
12834 | hit an exception. */ | |
12835 | if (!(isec->has_toc_reloc | |
12836 | || (isec->flags & SEC_CODE) == 0 | |
12837 | || strcmp (isec->name, ".fixup") == 0 | |
12838 | || isec->call_check_done)) | |
12839 | { | |
12840 | if (toc_adjusting_stub_needed (info, isec) < 0) | |
6683a28d | 12841 | return FALSE; |
8b974ba3 AM |
12842 | } |
12843 | /* Make all sections use the TOC assigned for this object file. | |
12844 | This will be wrong for pasted sections; We fix that in | |
12845 | check_pasted_section(). */ | |
12846 | if (elf_gp (isec->owner) != 0) | |
12847 | htab->toc_curr = elf_gp (isec->owner); | |
12848 | } | |
12849 | ||
6f20ed8a | 12850 | htab->sec_info[isec->id].toc_off = htab->toc_curr; |
9b5ecbd0 | 12851 | return TRUE; |
721956f4 AM |
12852 | } |
12853 | ||
70cc837d AM |
12854 | /* Check that all .init and .fini sections use the same toc, if they |
12855 | have toc relocs. */ | |
12856 | ||
12857 | static bfd_boolean | |
12858 | check_pasted_section (struct bfd_link_info *info, const char *name) | |
12859 | { | |
12860 | asection *o = bfd_get_section_by_name (info->output_bfd, name); | |
12861 | ||
12862 | if (o != NULL) | |
12863 | { | |
12864 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
12865 | bfd_vma toc_off = 0; | |
12866 | asection *i; | |
12867 | ||
12868 | for (i = o->map_head.s; i != NULL; i = i->map_head.s) | |
12869 | if (i->has_toc_reloc) | |
12870 | { | |
12871 | if (toc_off == 0) | |
6f20ed8a AM |
12872 | toc_off = htab->sec_info[i->id].toc_off; |
12873 | else if (toc_off != htab->sec_info[i->id].toc_off) | |
70cc837d AM |
12874 | return FALSE; |
12875 | } | |
6683a28d AM |
12876 | |
12877 | if (toc_off == 0) | |
12878 | for (i = o->map_head.s; i != NULL; i = i->map_head.s) | |
12879 | if (i->makes_toc_func_call) | |
12880 | { | |
6f20ed8a | 12881 | toc_off = htab->sec_info[i->id].toc_off; |
6683a28d AM |
12882 | break; |
12883 | } | |
12884 | ||
70cc837d AM |
12885 | /* Make sure the whole pasted function uses the same toc offset. */ |
12886 | if (toc_off != 0) | |
12887 | for (i = o->map_head.s; i != NULL; i = i->map_head.s) | |
6f20ed8a | 12888 | htab->sec_info[i->id].toc_off = toc_off; |
70cc837d AM |
12889 | } |
12890 | return TRUE; | |
12891 | } | |
12892 | ||
12893 | bfd_boolean | |
12894 | ppc64_elf_check_init_fini (struct bfd_link_info *info) | |
12895 | { | |
12896 | return (check_pasted_section (info, ".init") | |
12897 | & check_pasted_section (info, ".fini")); | |
12898 | } | |
12899 | ||
721956f4 AM |
12900 | /* See whether we can group stub sections together. Grouping stub |
12901 | sections may result in fewer stubs. More importantly, we need to | |
12902 | put all .init* and .fini* stubs at the beginning of the .init or | |
12903 | .fini output sections respectively, because glibc splits the | |
12904 | _init and _fini functions into multiple parts. Putting a stub in | |
12905 | the middle of a function is not a good idea. */ | |
12906 | ||
6f20ed8a AM |
12907 | static bfd_boolean |
12908 | group_sections (struct bfd_link_info *info, | |
4ce794b7 AM |
12909 | bfd_size_type stub_group_size, |
12910 | bfd_boolean stubs_always_before_branch) | |
721956f4 | 12911 | { |
6f20ed8a AM |
12912 | struct ppc_link_hash_table *htab; |
12913 | asection *osec; | |
7c8fe5c4 AM |
12914 | bfd_boolean suppress_size_errors; |
12915 | ||
6f20ed8a AM |
12916 | htab = ppc_hash_table (info); |
12917 | if (htab == NULL) | |
12918 | return FALSE; | |
12919 | ||
7c8fe5c4 | 12920 | suppress_size_errors = FALSE; |
7c8fe5c4 AM |
12921 | if (stub_group_size == 1) |
12922 | { | |
12923 | /* Default values. */ | |
12924 | if (stubs_always_before_branch) | |
09f92717 | 12925 | stub_group_size = 0x1e00000; |
7c8fe5c4 | 12926 | else |
09f92717 | 12927 | stub_group_size = 0x1c00000; |
7c8fe5c4 AM |
12928 | suppress_size_errors = TRUE; |
12929 | } | |
12930 | ||
6f20ed8a | 12931 | for (osec = info->output_bfd->sections; osec != NULL; osec = osec->next) |
721956f4 | 12932 | { |
6f20ed8a AM |
12933 | asection *tail; |
12934 | ||
12935 | if (osec->id >= htab->sec_info_arr_size) | |
12936 | continue; | |
12937 | ||
12938 | tail = htab->sec_info[osec->id].u.list; | |
734b6cf9 | 12939 | while (tail != NULL) |
721956f4 | 12940 | { |
734b6cf9 AM |
12941 | asection *curr; |
12942 | asection *prev; | |
12943 | bfd_size_type total; | |
12944 | bfd_boolean big_sec; | |
12945 | bfd_vma curr_toc; | |
6f20ed8a | 12946 | struct map_stub *group; |
09f92717 | 12947 | bfd_size_type group_size; |
734b6cf9 AM |
12948 | |
12949 | curr = tail; | |
eea6121a | 12950 | total = tail->size; |
09f92717 AM |
12951 | group_size = (ppc64_elf_section_data (tail) != NULL |
12952 | && ppc64_elf_section_data (tail)->has_14bit_branch | |
12953 | ? stub_group_size >> 10 : stub_group_size); | |
12954 | ||
12955 | big_sec = total > group_size; | |
7c8fe5c4 | 12956 | if (big_sec && !suppress_size_errors) |
695344c0 | 12957 | /* xgettext:c-format */ |
871b3ab2 | 12958 | _bfd_error_handler (_("%pB section %pA exceeds stub group size"), |
4eca0228 | 12959 | tail->owner, tail); |
6f20ed8a | 12960 | curr_toc = htab->sec_info[tail->id].toc_off; |
734b6cf9 | 12961 | |
6f20ed8a | 12962 | while ((prev = htab->sec_info[curr->id].u.list) != NULL |
734b6cf9 | 12963 | && ((total += curr->output_offset - prev->output_offset) |
6bee8834 AM |
12964 | < (ppc64_elf_section_data (prev) != NULL |
12965 | && ppc64_elf_section_data (prev)->has_14bit_branch | |
09f92717 | 12966 | ? (group_size = stub_group_size >> 10) : group_size)) |
6f20ed8a | 12967 | && htab->sec_info[prev->id].toc_off == curr_toc) |
734b6cf9 AM |
12968 | curr = prev; |
12969 | ||
12970 | /* OK, the size from the start of CURR to the end is less | |
09f92717 | 12971 | than group_size and thus can be handled by one stub |
734b6cf9 | 12972 | section. (or the tail section is itself larger than |
09f92717 AM |
12973 | group_size, in which case we may be toast.) We should |
12974 | really be keeping track of the total size of stubs added | |
12975 | here, as stubs contribute to the final output section | |
12976 | size. That's a little tricky, and this way will only | |
12977 | break if stubs added make the total size more than 2^25, | |
12978 | ie. for the default stub_group_size, if stubs total more | |
12979 | than 2097152 bytes, or nearly 75000 plt call stubs. */ | |
6f20ed8a AM |
12980 | group = bfd_alloc (curr->owner, sizeof (*group)); |
12981 | if (group == NULL) | |
12982 | return FALSE; | |
12983 | group->link_sec = curr; | |
12984 | group->stub_sec = NULL; | |
a4b6fadd | 12985 | group->needs_save_res = 0; |
df136d64 AM |
12986 | group->lr_restore = 0; |
12987 | group->eh_size = 0; | |
12988 | group->eh_base = 0; | |
a4b6fadd AM |
12989 | group->next = htab->group; |
12990 | htab->group = group; | |
734b6cf9 | 12991 | do |
721956f4 | 12992 | { |
6f20ed8a | 12993 | prev = htab->sec_info[tail->id].u.list; |
734b6cf9 | 12994 | /* Set up this stub group. */ |
6f20ed8a | 12995 | htab->sec_info[tail->id].u.group = group; |
721956f4 | 12996 | } |
734b6cf9 AM |
12997 | while (tail != curr && (tail = prev) != NULL); |
12998 | ||
09f92717 | 12999 | /* But wait, there's more! Input sections up to group_size |
734b6cf9 AM |
13000 | bytes before the stub section can be handled by it too. |
13001 | Don't do this if we have a really large section after the | |
13002 | stubs, as adding more stubs increases the chance that | |
13003 | branches may not reach into the stub section. */ | |
13004 | if (!stubs_always_before_branch && !big_sec) | |
13005 | { | |
13006 | total = 0; | |
13007 | while (prev != NULL | |
13008 | && ((total += tail->output_offset - prev->output_offset) | |
6bee8834 AM |
13009 | < (ppc64_elf_section_data (prev) != NULL |
13010 | && ppc64_elf_section_data (prev)->has_14bit_branch | |
2cdcc330 AM |
13011 | ? (group_size = stub_group_size >> 10) |
13012 | : group_size)) | |
6f20ed8a | 13013 | && htab->sec_info[prev->id].toc_off == curr_toc) |
734b6cf9 AM |
13014 | { |
13015 | tail = prev; | |
6f20ed8a AM |
13016 | prev = htab->sec_info[tail->id].u.list; |
13017 | htab->sec_info[tail->id].u.group = group; | |
734b6cf9 AM |
13018 | } |
13019 | } | |
13020 | tail = prev; | |
721956f4 AM |
13021 | } |
13022 | } | |
6f20ed8a | 13023 | return TRUE; |
721956f4 AM |
13024 | } |
13025 | ||
58d180e8 AM |
13026 | static const unsigned char glink_eh_frame_cie[] = |
13027 | { | |
13028 | 0, 0, 0, 16, /* length. */ | |
13029 | 0, 0, 0, 0, /* id. */ | |
13030 | 1, /* CIE version. */ | |
13031 | 'z', 'R', 0, /* Augmentation string. */ | |
13032 | 4, /* Code alignment. */ | |
13033 | 0x78, /* Data alignment. */ | |
13034 | 65, /* RA reg. */ | |
13035 | 1, /* Augmentation size. */ | |
13036 | DW_EH_PE_pcrel | DW_EH_PE_sdata4, /* FDE encoding. */ | |
2e0ce1c8 | 13037 | DW_CFA_def_cfa, 1, 0 /* def_cfa: r1 offset 0. */ |
58d180e8 AM |
13038 | }; |
13039 | ||
d969d15f AM |
13040 | /* Stripping output sections is normally done before dynamic section |
13041 | symbols have been allocated. This function is called later, and | |
13042 | handles cases like htab->brlt which is mapped to its own output | |
13043 | section. */ | |
13044 | ||
13045 | static void | |
13046 | maybe_strip_output (struct bfd_link_info *info, asection *isec) | |
13047 | { | |
13048 | if (isec->size == 0 | |
13049 | && isec->output_section->size == 0 | |
53d8967a | 13050 | && !(isec->output_section->flags & SEC_KEEP) |
d969d15f AM |
13051 | && !bfd_section_removed_from_list (info->output_bfd, |
13052 | isec->output_section) | |
13053 | && elf_section_data (isec->output_section)->dynindx == 0) | |
13054 | { | |
13055 | isec->output_section->flags |= SEC_EXCLUDE; | |
13056 | bfd_section_list_remove (info->output_bfd, isec->output_section); | |
13057 | info->output_bfd->section_count--; | |
13058 | } | |
13059 | } | |
13060 | ||
721956f4 AM |
13061 | /* Determine and set the size of the stub section for a final link. |
13062 | ||
13063 | The basic idea here is to examine all the relocations looking for | |
13064 | PC-relative calls to a target that is unreachable with a "bl" | |
13065 | instruction. */ | |
13066 | ||
b34976b6 | 13067 | bfd_boolean |
e7d1c40c | 13068 | ppc64_elf_size_stubs (struct bfd_link_info *info) |
721956f4 AM |
13069 | { |
13070 | bfd_size_type stub_group_size; | |
b34976b6 | 13071 | bfd_boolean stubs_always_before_branch; |
721956f4 AM |
13072 | struct ppc_link_hash_table *htab = ppc_hash_table (info); |
13073 | ||
4dfe6ac6 NC |
13074 | if (htab == NULL) |
13075 | return FALSE; | |
13076 | ||
d349c8e2 AM |
13077 | if (htab->params->power10_stubs == -1 && !htab->has_power10_relocs) |
13078 | htab->params->power10_stubs = 0; | |
13079 | ||
0e1862bb | 13080 | if (htab->params->plt_thread_safe == -1 && !bfd_link_executable (info)) |
e7d1c40c | 13081 | htab->params->plt_thread_safe = 1; |
b9e5796b | 13082 | if (!htab->opd_abi) |
e7d1c40c AM |
13083 | htab->params->plt_thread_safe = 0; |
13084 | else if (htab->params->plt_thread_safe == -1) | |
794e51c0 | 13085 | { |
e2458743 | 13086 | static const char *const thread_starter[] = |
794e51c0 AM |
13087 | { |
13088 | "pthread_create", | |
13089 | /* libstdc++ */ | |
13090 | "_ZNSt6thread15_M_start_threadESt10shared_ptrINS_10_Impl_baseEE", | |
13091 | /* librt */ | |
13092 | "aio_init", "aio_read", "aio_write", "aio_fsync", "lio_listio", | |
13093 | "mq_notify", "create_timer", | |
13094 | /* libanl */ | |
13095 | "getaddrinfo_a", | |
13096 | /* libgomp */ | |
2300b5a1 | 13097 | "GOMP_parallel", |
794e51c0 | 13098 | "GOMP_parallel_start", |
2300b5a1 | 13099 | "GOMP_parallel_loop_static", |
794e51c0 | 13100 | "GOMP_parallel_loop_static_start", |
2300b5a1 | 13101 | "GOMP_parallel_loop_dynamic", |
794e51c0 | 13102 | "GOMP_parallel_loop_dynamic_start", |
2300b5a1 | 13103 | "GOMP_parallel_loop_guided", |
794e51c0 | 13104 | "GOMP_parallel_loop_guided_start", |
2300b5a1 | 13105 | "GOMP_parallel_loop_runtime", |
794e51c0 | 13106 | "GOMP_parallel_loop_runtime_start", |
2300b5a1 | 13107 | "GOMP_parallel_sections", |
68ffbac6 | 13108 | "GOMP_parallel_sections_start", |
f9dffbf0 AM |
13109 | /* libgo */ |
13110 | "__go_go", | |
794e51c0 AM |
13111 | }; |
13112 | unsigned i; | |
13113 | ||
a4b6fadd | 13114 | for (i = 0; i < ARRAY_SIZE (thread_starter); i++) |
794e51c0 AM |
13115 | { |
13116 | struct elf_link_hash_entry *h; | |
13117 | h = elf_link_hash_lookup (&htab->elf, thread_starter[i], | |
13118 | FALSE, FALSE, TRUE); | |
e7d1c40c AM |
13119 | htab->params->plt_thread_safe = h != NULL && h->ref_regular; |
13120 | if (htab->params->plt_thread_safe) | |
794e51c0 AM |
13121 | break; |
13122 | } | |
13123 | } | |
e7d1c40c AM |
13124 | stubs_always_before_branch = htab->params->group_size < 0; |
13125 | if (htab->params->group_size < 0) | |
13126 | stub_group_size = -htab->params->group_size; | |
721956f4 | 13127 | else |
e7d1c40c | 13128 | stub_group_size = htab->params->group_size; |
721956f4 | 13129 | |
6f20ed8a AM |
13130 | if (!group_sections (info, stub_group_size, stubs_always_before_branch)) |
13131 | return FALSE; | |
721956f4 | 13132 | |
a804e476 AM |
13133 | htab->tga_group = NULL; |
13134 | if (!htab->params->no_tls_get_addr_regsave | |
13135 | && htab->tga_desc_fd != NULL | |
13136 | && (htab->tga_desc_fd->elf.root.type == bfd_link_hash_undefined | |
13137 | || htab->tga_desc_fd->elf.root.type == bfd_link_hash_undefweak) | |
13138 | && htab->tls_get_addr_fd != NULL | |
13139 | && is_static_defined (&htab->tls_get_addr_fd->elf)) | |
13140 | { | |
13141 | asection *sym_sec, *code_sec, *stub_sec; | |
13142 | bfd_vma sym_value; | |
13143 | struct _opd_sec_data *opd; | |
13144 | ||
13145 | sym_sec = htab->tls_get_addr_fd->elf.root.u.def.section; | |
13146 | sym_value = defined_sym_val (&htab->tls_get_addr_fd->elf); | |
13147 | code_sec = sym_sec; | |
13148 | opd = get_opd_info (sym_sec); | |
13149 | if (opd != NULL) | |
13150 | opd_entry_value (sym_sec, sym_value, &code_sec, NULL, FALSE); | |
13151 | htab->tga_group = htab->sec_info[code_sec->id].u.group; | |
13152 | stub_sec = (*htab->params->add_stub_section) (".tga_desc.stub", | |
13153 | htab->tga_group->link_sec); | |
13154 | if (stub_sec == NULL) | |
13155 | return FALSE; | |
13156 | htab->tga_group->stub_sec = stub_sec; | |
13157 | ||
13158 | htab->tga_desc_fd->elf.root.type = bfd_link_hash_defined; | |
13159 | htab->tga_desc_fd->elf.root.u.def.section = stub_sec; | |
13160 | htab->tga_desc_fd->elf.root.u.def.value = 0; | |
13161 | htab->tga_desc_fd->elf.type = STT_FUNC; | |
13162 | htab->tga_desc_fd->elf.def_regular = 1; | |
13163 | htab->tga_desc_fd->elf.non_elf = 0; | |
13164 | _bfd_elf_link_hash_hide_symbol (info, &htab->tga_desc_fd->elf, TRUE); | |
13165 | } | |
13166 | ||
c9301e31 AM |
13167 | #define STUB_SHRINK_ITER 20 |
13168 | /* Loop until no stubs added. After iteration 20 of this loop we may | |
13169 | exit on a stub section shrinking. This is to break out of a | |
13170 | pathological case where adding stubs on one iteration decreases | |
13171 | section gaps (perhaps due to alignment), which then requires | |
13172 | fewer or smaller stubs on the next iteration. */ | |
13173 | ||
721956f4 AM |
13174 | while (1) |
13175 | { | |
13176 | bfd *input_bfd; | |
13177 | unsigned int bfd_indx; | |
a4b6fadd | 13178 | struct map_stub *group; |
721956f4 AM |
13179 | |
13180 | htab->stub_iteration += 1; | |
721956f4 AM |
13181 | |
13182 | for (input_bfd = info->input_bfds, bfd_indx = 0; | |
13183 | input_bfd != NULL; | |
c72f2fb2 | 13184 | input_bfd = input_bfd->link.next, bfd_indx++) |
721956f4 AM |
13185 | { |
13186 | Elf_Internal_Shdr *symtab_hdr; | |
13187 | asection *section; | |
6cdc0ccc | 13188 | Elf_Internal_Sym *local_syms = NULL; |
721956f4 | 13189 | |
0c8d6e5c | 13190 | if (!is_ppc64_elf (input_bfd)) |
67f93c31 AM |
13191 | continue; |
13192 | ||
721956f4 | 13193 | /* We'll need the symbol table in a second. */ |
0ffa91dd | 13194 | symtab_hdr = &elf_symtab_hdr (input_bfd); |
721956f4 AM |
13195 | if (symtab_hdr->sh_info == 0) |
13196 | continue; | |
13197 | ||
721956f4 AM |
13198 | /* Walk over each section attached to the input bfd. */ |
13199 | for (section = input_bfd->sections; | |
13200 | section != NULL; | |
13201 | section = section->next) | |
13202 | { | |
721956f4 | 13203 | Elf_Internal_Rela *internal_relocs, *irelaend, *irela; |
721956f4 AM |
13204 | |
13205 | /* If there aren't any relocs, then there's nothing more | |
13206 | to do. */ | |
13207 | if ((section->flags & SEC_RELOC) == 0 | |
12c0f757 AM |
13208 | || (section->flags & SEC_ALLOC) == 0 |
13209 | || (section->flags & SEC_LOAD) == 0 | |
13210 | || (section->flags & SEC_CODE) == 0 | |
721956f4 AM |
13211 | || section->reloc_count == 0) |
13212 | continue; | |
13213 | ||
13214 | /* If this section is a link-once section that will be | |
13215 | discarded, then don't create any stubs. */ | |
13216 | if (section->output_section == NULL | |
927be08e | 13217 | || section->output_section->owner != info->output_bfd) |
721956f4 AM |
13218 | continue; |
13219 | ||
1e2f5b6e AM |
13220 | /* Get the relocs. */ |
13221 | internal_relocs | |
4ce794b7 | 13222 | = _bfd_elf_link_read_relocs (input_bfd, section, NULL, NULL, |
45d6a902 | 13223 | info->keep_memory); |
721956f4 | 13224 | if (internal_relocs == NULL) |
1e2f5b6e | 13225 | goto error_ret_free_local; |
721956f4 AM |
13226 | |
13227 | /* Now examine each relocation. */ | |
13228 | irela = internal_relocs; | |
13229 | irelaend = irela + section->reloc_count; | |
13230 | for (; irela < irelaend; irela++) | |
13231 | { | |
4ce794b7 AM |
13232 | enum elf_ppc64_reloc_type r_type; |
13233 | unsigned int r_indx; | |
721956f4 AM |
13234 | enum ppc_stub_type stub_type; |
13235 | struct ppc_stub_hash_entry *stub_entry; | |
8387904d | 13236 | asection *sym_sec, *code_sec; |
e054468f | 13237 | bfd_vma sym_value, code_value; |
721956f4 | 13238 | bfd_vma destination; |
6911b7dc | 13239 | unsigned long local_off; |
8843416a | 13240 | bfd_boolean ok_dest; |
721956f4 | 13241 | struct ppc_link_hash_entry *hash; |
8387904d | 13242 | struct ppc_link_hash_entry *fdh; |
411e1bfb AM |
13243 | struct elf_link_hash_entry *h; |
13244 | Elf_Internal_Sym *sym; | |
721956f4 AM |
13245 | char *stub_name; |
13246 | const asection *id_sec; | |
74f0fb50 | 13247 | struct _opd_sec_data *opd; |
e054468f | 13248 | struct plt_entry *plt_ent; |
721956f4 AM |
13249 | |
13250 | r_type = ELF64_R_TYPE (irela->r_info); | |
13251 | r_indx = ELF64_R_SYM (irela->r_info); | |
13252 | ||
4ce794b7 | 13253 | if (r_type >= R_PPC64_max) |
721956f4 AM |
13254 | { |
13255 | bfd_set_error (bfd_error_bad_value); | |
6cdc0ccc | 13256 | goto error_ret_free_internal; |
721956f4 AM |
13257 | } |
13258 | ||
13259 | /* Only look for stubs on branch instructions. */ | |
4ce794b7 | 13260 | if (r_type != R_PPC64_REL24 |
05d0e962 | 13261 | && r_type != R_PPC64_REL24_NOTOC |
4ce794b7 AM |
13262 | && r_type != R_PPC64_REL14 |
13263 | && r_type != R_PPC64_REL14_BRTAKEN | |
13264 | && r_type != R_PPC64_REL14_BRNTAKEN) | |
721956f4 AM |
13265 | continue; |
13266 | ||
13267 | /* Now determine the call target, its name, value, | |
13268 | section. */ | |
411e1bfb AM |
13269 | if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, |
13270 | r_indx, input_bfd)) | |
13271 | goto error_ret_free_internal; | |
ed7007c1 | 13272 | hash = ppc_elf_hash_entry (h); |
411e1bfb | 13273 | |
8843416a | 13274 | ok_dest = FALSE; |
8387904d | 13275 | fdh = NULL; |
7fe2b9a6 | 13276 | sym_value = 0; |
411e1bfb | 13277 | if (hash == NULL) |
721956f4 | 13278 | { |
411e1bfb | 13279 | sym_value = sym->st_value; |
c27b8c2a AM |
13280 | if (sym_sec != NULL |
13281 | && sym_sec->output_section != NULL) | |
13282 | ok_dest = TRUE; | |
721956f4 | 13283 | } |
7fe2b9a6 AM |
13284 | else if (hash->elf.root.type == bfd_link_hash_defined |
13285 | || hash->elf.root.type == bfd_link_hash_defweak) | |
13286 | { | |
13287 | sym_value = hash->elf.root.u.def.value; | |
13288 | if (sym_sec->output_section != NULL) | |
13289 | ok_dest = TRUE; | |
13290 | } | |
13291 | else if (hash->elf.root.type == bfd_link_hash_undefweak | |
13292 | || hash->elf.root.type == bfd_link_hash_undefined) | |
721956f4 | 13293 | { |
99877b66 | 13294 | /* Recognise an old ABI func code entry sym, and |
7fe2b9a6 AM |
13295 | use the func descriptor sym instead if it is |
13296 | defined. */ | |
ceb1f1ef | 13297 | if (hash->elf.root.root.string[0] == '.' |
8c5b4e52 | 13298 | && hash->oh != NULL) |
8387904d | 13299 | { |
8c5b4e52 | 13300 | fdh = ppc_follow_link (hash->oh); |
8387904d AM |
13301 | if (fdh->elf.root.type == bfd_link_hash_defined |
13302 | || fdh->elf.root.type == bfd_link_hash_defweak) | |
13303 | { | |
13304 | sym_sec = fdh->elf.root.u.def.section; | |
13305 | sym_value = fdh->elf.root.u.def.value; | |
13306 | if (sym_sec->output_section != NULL) | |
13307 | ok_dest = TRUE; | |
13308 | } | |
99877b66 AM |
13309 | else |
13310 | fdh = NULL; | |
8387904d | 13311 | } |
7fe2b9a6 AM |
13312 | } |
13313 | else | |
13314 | { | |
13315 | bfd_set_error (bfd_error_bad_value); | |
13316 | goto error_ret_free_internal; | |
721956f4 AM |
13317 | } |
13318 | ||
8843416a | 13319 | destination = 0; |
6911b7dc | 13320 | local_off = 0; |
8843416a AM |
13321 | if (ok_dest) |
13322 | { | |
13323 | sym_value += irela->r_addend; | |
13324 | destination = (sym_value | |
13325 | + sym_sec->output_offset | |
13326 | + sym_sec->output_section->vma); | |
6911b7dc AM |
13327 | local_off = PPC64_LOCAL_ENTRY_OFFSET (hash |
13328 | ? hash->elf.other | |
13329 | : sym->st_other); | |
8843416a AM |
13330 | } |
13331 | ||
8387904d | 13332 | code_sec = sym_sec; |
e054468f | 13333 | code_value = sym_value; |
74f0fb50 AM |
13334 | opd = get_opd_info (sym_sec); |
13335 | if (opd != NULL) | |
8387904d AM |
13336 | { |
13337 | bfd_vma dest; | |
13338 | ||
74f0fb50 | 13339 | if (hash == NULL && opd->adjust != NULL) |
8387904d | 13340 | { |
51aecdc5 | 13341 | long adjust = opd->adjust[OPD_NDX (sym_value)]; |
8387904d AM |
13342 | if (adjust == -1) |
13343 | continue; | |
e054468f | 13344 | code_value += adjust; |
8387904d AM |
13345 | sym_value += adjust; |
13346 | } | |
13347 | dest = opd_entry_value (sym_sec, sym_value, | |
aef36ac1 | 13348 | &code_sec, &code_value, FALSE); |
8387904d AM |
13349 | if (dest != (bfd_vma) -1) |
13350 | { | |
13351 | destination = dest; | |
13352 | if (fdh != NULL) | |
13353 | { | |
13354 | /* Fixup old ABI sym to point at code | |
13355 | entry. */ | |
99877b66 | 13356 | hash->elf.root.type = bfd_link_hash_defweak; |
8387904d | 13357 | hash->elf.root.u.def.section = code_sec; |
e054468f | 13358 | hash->elf.root.u.def.value = code_value; |
8387904d AM |
13359 | } |
13360 | } | |
13361 | } | |
13362 | ||
721956f4 | 13363 | /* Determine what (if any) linker stub is needed. */ |
e054468f | 13364 | plt_ent = NULL; |
721956f4 | 13365 | stub_type = ppc_type_of_stub (section, irela, &hash, |
6911b7dc AM |
13366 | &plt_ent, destination, |
13367 | local_off); | |
ad8e1ba5 | 13368 | |
05d0e962 AM |
13369 | if (r_type == R_PPC64_REL24_NOTOC) |
13370 | { | |
13371 | if (stub_type == ppc_stub_plt_call) | |
13372 | stub_type = ppc_stub_plt_call_notoc; | |
13373 | else if (stub_type == ppc_stub_long_branch | |
13374 | || (code_sec != NULL | |
13375 | && code_sec->output_section != NULL | |
13376 | && (((hash ? hash->elf.other : sym->st_other) | |
13377 | & STO_PPC64_LOCAL_MASK) | |
4a4e7361 | 13378 | > 1 << STO_PPC64_LOCAL_BIT))) |
05d0e962 AM |
13379 | stub_type = ppc_stub_long_branch_notoc; |
13380 | } | |
13381 | else if (stub_type != ppc_stub_plt_call) | |
ad8e1ba5 AM |
13382 | { |
13383 | /* Check whether we need a TOC adjusting stub. | |
13384 | Since the linker pastes together pieces from | |
13385 | different object files when creating the | |
13386 | _init and _fini functions, it may be that a | |
13387 | call to what looks like a local sym is in | |
13388 | fact a call needing a TOC adjustment. */ | |
33cb30a1 AM |
13389 | if ((code_sec != NULL |
13390 | && code_sec->output_section != NULL | |
13391 | && (htab->sec_info[code_sec->id].toc_off | |
13392 | != htab->sec_info[section->id].toc_off) | |
13393 | && (code_sec->has_toc_reloc | |
13394 | || code_sec->makes_toc_func_call)) | |
13395 | || (((hash ? hash->elf.other : sym->st_other) | |
13396 | & STO_PPC64_LOCAL_MASK) | |
13397 | == 1 << STO_PPC64_LOCAL_BIT)) | |
ad8e1ba5 AM |
13398 | stub_type = ppc_stub_long_branch_r2off; |
13399 | } | |
13400 | ||
721956f4 AM |
13401 | if (stub_type == ppc_stub_none) |
13402 | continue; | |
13403 | ||
411e1bfb AM |
13404 | /* __tls_get_addr calls might be eliminated. */ |
13405 | if (stub_type != ppc_stub_plt_call | |
05d0e962 | 13406 | && stub_type != ppc_stub_plt_call_notoc |
411e1bfb | 13407 | && hash != NULL |
ed7007c1 | 13408 | && is_tls_get_addr (&hash->elf, htab) |
411e1bfb AM |
13409 | && section->has_tls_reloc |
13410 | && irela != internal_relocs) | |
13411 | { | |
13412 | /* Get tls info. */ | |
f961d9dd | 13413 | unsigned char *tls_mask; |
411e1bfb | 13414 | |
3a71aa26 | 13415 | if (!get_tls_mask (&tls_mask, NULL, NULL, &local_syms, |
411e1bfb AM |
13416 | irela - 1, input_bfd)) |
13417 | goto error_ret_free_internal; | |
abc489c6 AM |
13418 | if ((*tls_mask & TLS_TLS) != 0 |
13419 | && (*tls_mask & (TLS_GD | TLS_LD)) == 0) | |
411e1bfb AM |
13420 | continue; |
13421 | } | |
13422 | ||
f378ab09 | 13423 | if (stub_type == ppc_stub_plt_call) |
794e51c0 | 13424 | { |
6e1816be AM |
13425 | if (!htab->opd_abi |
13426 | && htab->params->plt_localentry0 != 0 | |
13427 | && is_elfv2_localentry0 (&hash->elf)) | |
13428 | htab->has_plt_localentry0 = 1; | |
13429 | else if (irela + 1 < irelaend | |
13430 | && irela[1].r_offset == irela->r_offset + 4 | |
13431 | && (ELF64_R_TYPE (irela[1].r_info) | |
13432 | == R_PPC64_TOCSAVE)) | |
f378ab09 AM |
13433 | { |
13434 | if (!tocsave_find (htab, INSERT, | |
13435 | &local_syms, irela + 1, input_bfd)) | |
13436 | goto error_ret_free_internal; | |
13437 | } | |
f378ab09 AM |
13438 | else |
13439 | stub_type = ppc_stub_plt_call_r2save; | |
794e51c0 | 13440 | } |
3b421ab3 | 13441 | |
721956f4 | 13442 | /* Support for grouping stub sections. */ |
6f20ed8a | 13443 | id_sec = htab->sec_info[section->id].u.group->link_sec; |
721956f4 AM |
13444 | |
13445 | /* Get the name of this stub. */ | |
13446 | stub_name = ppc_stub_name (id_sec, sym_sec, hash, irela); | |
13447 | if (!stub_name) | |
13448 | goto error_ret_free_internal; | |
13449 | ||
13450 | stub_entry = ppc_stub_hash_lookup (&htab->stub_hash_table, | |
b34976b6 | 13451 | stub_name, FALSE, FALSE); |
721956f4 AM |
13452 | if (stub_entry != NULL) |
13453 | { | |
05d0e962 | 13454 | enum ppc_stub_type old_type; |
d349c8e2 | 13455 | |
05d0e962 AM |
13456 | /* A stub has already been created, but it may |
13457 | not be the required type. We shouldn't be | |
13458 | transitioning from plt_call to long_branch | |
13459 | stubs or vice versa, but we might be | |
13460 | upgrading from plt_call to plt_call_r2save or | |
13461 | from long_branch to long_branch_r2off. */ | |
721956f4 | 13462 | free (stub_name); |
d349c8e2 AM |
13463 | if (htab->params->power10_stubs == -1) |
13464 | { | |
13465 | /* For --power10-stubs=auto, don't merge _notoc | |
13466 | and other varieties of stubs. (The _both | |
13467 | variety won't be created.) */ | |
13468 | bfd_boolean notoc = r_type == R_PPC64_REL24_NOTOC; | |
13469 | struct ppc_stub_hash_entry *alt_stub | |
13470 | = select_alt_stub (stub_entry, notoc); | |
13471 | ||
13472 | if (alt_stub == NULL) | |
13473 | { | |
13474 | alt_stub = (struct ppc_stub_hash_entry *) | |
13475 | stub_hash_newfunc (NULL, | |
13476 | &htab->stub_hash_table, | |
13477 | stub_entry->root.string); | |
13478 | if (alt_stub == NULL) | |
13479 | { | |
13480 | /* xgettext:c-format */ | |
13481 | _bfd_error_handler | |
13482 | (_("%pB: cannot create stub entry %s"), | |
13483 | section->owner, stub_entry->root.string); | |
13484 | goto error_ret_free_internal; | |
13485 | } | |
13486 | *alt_stub = *stub_entry; | |
13487 | stub_entry->root.next = &alt_stub->root; | |
13488 | if (notoc) | |
13489 | /* Sort notoc stubs first, for no good | |
13490 | reason. */ | |
13491 | alt_stub = stub_entry; | |
13492 | alt_stub->stub_type = stub_type; | |
13493 | } | |
13494 | stub_entry = alt_stub; | |
13495 | } | |
05d0e962 AM |
13496 | old_type = stub_entry->stub_type; |
13497 | switch (old_type) | |
13498 | { | |
13499 | default: | |
13500 | abort (); | |
13501 | ||
13502 | case ppc_stub_save_res: | |
13503 | continue; | |
13504 | ||
13505 | case ppc_stub_plt_call: | |
13506 | case ppc_stub_plt_call_r2save: | |
13507 | case ppc_stub_plt_call_notoc: | |
13508 | case ppc_stub_plt_call_both: | |
13509 | if (stub_type == ppc_stub_plt_call) | |
13510 | continue; | |
13511 | else if (stub_type == ppc_stub_plt_call_r2save) | |
13512 | { | |
13513 | if (old_type == ppc_stub_plt_call_notoc) | |
13514 | stub_type = ppc_stub_plt_call_both; | |
13515 | } | |
13516 | else if (stub_type == ppc_stub_plt_call_notoc) | |
13517 | { | |
13518 | if (old_type == ppc_stub_plt_call_r2save) | |
13519 | stub_type = ppc_stub_plt_call_both; | |
13520 | } | |
13521 | else | |
13522 | abort (); | |
13523 | break; | |
13524 | ||
13525 | case ppc_stub_plt_branch: | |
13526 | case ppc_stub_plt_branch_r2off: | |
13527 | case ppc_stub_plt_branch_notoc: | |
13528 | case ppc_stub_plt_branch_both: | |
13529 | old_type += (ppc_stub_long_branch | |
13530 | - ppc_stub_plt_branch); | |
13531 | /* Fall through. */ | |
13532 | case ppc_stub_long_branch: | |
13533 | case ppc_stub_long_branch_r2off: | |
13534 | case ppc_stub_long_branch_notoc: | |
13535 | case ppc_stub_long_branch_both: | |
13536 | if (stub_type == ppc_stub_long_branch) | |
13537 | continue; | |
13538 | else if (stub_type == ppc_stub_long_branch_r2off) | |
13539 | { | |
13540 | if (old_type == ppc_stub_long_branch_notoc) | |
13541 | stub_type = ppc_stub_long_branch_both; | |
13542 | } | |
13543 | else if (stub_type == ppc_stub_long_branch_notoc) | |
13544 | { | |
13545 | if (old_type == ppc_stub_long_branch_r2off) | |
13546 | stub_type = ppc_stub_long_branch_both; | |
13547 | } | |
13548 | else | |
13549 | abort (); | |
13550 | break; | |
13551 | } | |
13552 | if (old_type < stub_type) | |
794e51c0 | 13553 | stub_entry->stub_type = stub_type; |
721956f4 AM |
13554 | continue; |
13555 | } | |
13556 | ||
25f53a85 | 13557 | stub_entry = ppc_add_stub (stub_name, section, info); |
721956f4 AM |
13558 | if (stub_entry == NULL) |
13559 | { | |
13560 | free (stub_name); | |
6cdc0ccc AM |
13561 | error_ret_free_internal: |
13562 | if (elf_section_data (section)->relocs == NULL) | |
13563 | free (internal_relocs); | |
13564 | error_ret_free_local: | |
c9594989 AM |
13565 | if (symtab_hdr->contents |
13566 | != (unsigned char *) local_syms) | |
6cdc0ccc | 13567 | free (local_syms); |
b34976b6 | 13568 | return FALSE; |
721956f4 AM |
13569 | } |
13570 | ||
ad8e1ba5 | 13571 | stub_entry->stub_type = stub_type; |
05d0e962 AM |
13572 | if (stub_type >= ppc_stub_plt_call |
13573 | && stub_type <= ppc_stub_plt_call_both) | |
e054468f | 13574 | { |
05d0e962 AM |
13575 | stub_entry->target_value = sym_value; |
13576 | stub_entry->target_section = sym_sec; | |
e054468f AM |
13577 | } |
13578 | else | |
13579 | { | |
05d0e962 AM |
13580 | stub_entry->target_value = code_value; |
13581 | stub_entry->target_section = code_sec; | |
e054468f | 13582 | } |
721956f4 | 13583 | stub_entry->h = hash; |
e054468f | 13584 | stub_entry->plt_ent = plt_ent; |
2d7ad24e AM |
13585 | stub_entry->symtype |
13586 | = hash ? hash->elf.type : ELF_ST_TYPE (sym->st_info); | |
6911b7dc | 13587 | stub_entry->other = hash ? hash->elf.other : sym->st_other; |
ee75fd95 | 13588 | |
3d58e1fc AM |
13589 | if (hash != NULL |
13590 | && (hash->elf.root.type == bfd_link_hash_defined | |
13591 | || hash->elf.root.type == bfd_link_hash_defweak)) | |
ee75fd95 | 13592 | htab->stub_globals += 1; |
721956f4 AM |
13593 | } |
13594 | ||
13595 | /* We're done with the internal relocs, free them. */ | |
6cdc0ccc | 13596 | if (elf_section_data (section)->relocs != internal_relocs) |
1e2f5b6e | 13597 | free (internal_relocs); |
721956f4 | 13598 | } |
6cdc0ccc AM |
13599 | |
13600 | if (local_syms != NULL | |
13601 | && symtab_hdr->contents != (unsigned char *) local_syms) | |
13602 | { | |
13603 | if (!info->keep_memory) | |
13604 | free (local_syms); | |
13605 | else | |
13606 | symtab_hdr->contents = (unsigned char *) local_syms; | |
13607 | } | |
721956f4 AM |
13608 | } |
13609 | ||
5c3dead3 | 13610 | /* We may have added some stubs. Find out the new size of the |
721956f4 | 13611 | stub sections. */ |
d4aaa2a0 | 13612 | for (group = htab->group; group != NULL; group = group->next) |
df136d64 AM |
13613 | { |
13614 | group->lr_restore = 0; | |
13615 | group->eh_size = 0; | |
13616 | if (group->stub_sec != NULL) | |
13617 | { | |
13618 | asection *stub_sec = group->stub_sec; | |
13619 | ||
13620 | if (htab->stub_iteration <= STUB_SHRINK_ITER | |
13621 | || stub_sec->rawsize < stub_sec->size) | |
13622 | /* Past STUB_SHRINK_ITER, rawsize is the max size seen. */ | |
13623 | stub_sec->rawsize = stub_sec->size; | |
13624 | stub_sec->size = 0; | |
13625 | stub_sec->reloc_count = 0; | |
13626 | stub_sec->flags &= ~SEC_RELOC; | |
13627 | } | |
13628 | } | |
a804e476 AM |
13629 | if (htab->tga_group != NULL) |
13630 | { | |
13631 | /* See emit_tga_desc and emit_tga_desc_eh_frame. */ | |
13632 | htab->tga_group->eh_size | |
13633 | = 1 + 2 + (htab->opd_abi != 0) + 3 + 8 * 2 + 3 + 8 + 3; | |
13634 | htab->tga_group->lr_restore = 23 * 4; | |
13635 | htab->tga_group->stub_sec->size = 24 * 4; | |
13636 | } | |
eea6121a | 13637 | |
ba21f564 AM |
13638 | if (htab->stub_iteration <= STUB_SHRINK_ITER |
13639 | || htab->brlt->rawsize < htab->brlt->size) | |
13640 | htab->brlt->rawsize = htab->brlt->size; | |
eea6121a | 13641 | htab->brlt->size = 0; |
84f5d08e AM |
13642 | htab->brlt->reloc_count = 0; |
13643 | htab->brlt->flags &= ~SEC_RELOC; | |
ee75fd95 | 13644 | if (htab->relbrlt != NULL) |
eea6121a | 13645 | htab->relbrlt->size = 0; |
721956f4 | 13646 | |
63bc6f6c | 13647 | bfd_hash_traverse (&htab->stub_hash_table, ppc_size_one_stub, info); |
721956f4 | 13648 | |
a4b6fadd AM |
13649 | for (group = htab->group; group != NULL; group = group->next) |
13650 | if (group->needs_save_res) | |
13651 | group->stub_sec->size += htab->sfpr->size; | |
13652 | ||
176a0d42 AM |
13653 | if (info->emitrelocations |
13654 | && htab->glink != NULL && htab->glink->size != 0) | |
13655 | { | |
13656 | htab->glink->reloc_count = 1; | |
13657 | htab->glink->flags |= SEC_RELOC; | |
13658 | } | |
13659 | ||
58d180e8 AM |
13660 | if (htab->glink_eh_frame != NULL |
13661 | && !bfd_is_abs_section (htab->glink_eh_frame->output_section) | |
2d0d44d5 | 13662 | && htab->glink_eh_frame->output_section->size > 8) |
58d180e8 | 13663 | { |
2e0ce1c8 | 13664 | size_t size = 0, align = 4; |
58d180e8 | 13665 | |
d4aaa2a0 | 13666 | for (group = htab->group; group != NULL; group = group->next) |
df136d64 AM |
13667 | if (group->eh_size != 0) |
13668 | size += (group->eh_size + 17 + align - 1) & -align; | |
58d180e8 | 13669 | if (htab->glink != NULL && htab->glink->size != 0) |
2e0ce1c8 | 13670 | size += (24 + align - 1) & -align; |
58d180e8 | 13671 | if (size != 0) |
2e0ce1c8 AM |
13672 | size += (sizeof (glink_eh_frame_cie) + align - 1) & -align; |
13673 | align = 1ul << htab->glink_eh_frame->output_section->alignment_power; | |
13674 | size = (size + align - 1) & -align; | |
58d180e8 AM |
13675 | htab->glink_eh_frame->rawsize = htab->glink_eh_frame->size; |
13676 | htab->glink_eh_frame->size = size; | |
13677 | } | |
13678 | ||
e7d1c40c | 13679 | if (htab->params->plt_stub_align != 0) |
d4aaa2a0 AM |
13680 | for (group = htab->group; group != NULL; group = group->next) |
13681 | if (group->stub_sec != NULL) | |
691d2e9a AM |
13682 | { |
13683 | int align = abs (htab->params->plt_stub_align); | |
13684 | group->stub_sec->size | |
13685 | = (group->stub_sec->size + (1 << align) - 1) & -(1 << align); | |
13686 | } | |
d4aaa2a0 AM |
13687 | |
13688 | for (group = htab->group; group != NULL; group = group->next) | |
13689 | if (group->stub_sec != NULL | |
13690 | && group->stub_sec->rawsize != group->stub_sec->size | |
c9301e31 | 13691 | && (htab->stub_iteration <= STUB_SHRINK_ITER |
d4aaa2a0 | 13692 | || group->stub_sec->rawsize < group->stub_sec->size)) |
5c3dead3 AM |
13693 | break; |
13694 | ||
d4aaa2a0 | 13695 | if (group == NULL |
ba21f564 AM |
13696 | && (htab->brlt->rawsize == htab->brlt->size |
13697 | || (htab->stub_iteration > STUB_SHRINK_ITER | |
13698 | && htab->brlt->rawsize > htab->brlt->size)) | |
58d180e8 | 13699 | && (htab->glink_eh_frame == NULL |
a804e476 AM |
13700 | || htab->glink_eh_frame->rawsize == htab->glink_eh_frame->size) |
13701 | && (htab->tga_group == NULL | |
13702 | || htab->stub_iteration > 1)) | |
5c3dead3 AM |
13703 | break; |
13704 | ||
721956f4 | 13705 | /* Ask the linker to do its stuff. */ |
e7d1c40c | 13706 | (*htab->params->layout_sections_again) (); |
721956f4 AM |
13707 | } |
13708 | ||
da44f4e5 AM |
13709 | if (htab->glink_eh_frame != NULL |
13710 | && htab->glink_eh_frame->size != 0) | |
13711 | { | |
13712 | bfd_vma val; | |
13713 | bfd_byte *p, *last_fde; | |
13714 | size_t last_fde_len, size, align, pad; | |
d4aaa2a0 | 13715 | struct map_stub *group; |
da44f4e5 | 13716 | |
df136d64 AM |
13717 | /* It is necessary to at least have a rough outline of the |
13718 | linker generated CIEs and FDEs written before | |
13719 | bfd_elf_discard_info is run, in order for these FDEs to be | |
13720 | indexed in .eh_frame_hdr. */ | |
da44f4e5 AM |
13721 | p = bfd_zalloc (htab->glink_eh_frame->owner, htab->glink_eh_frame->size); |
13722 | if (p == NULL) | |
13723 | return FALSE; | |
13724 | htab->glink_eh_frame->contents = p; | |
13725 | last_fde = p; | |
2e0ce1c8 | 13726 | align = 4; |
da44f4e5 AM |
13727 | |
13728 | memcpy (p, glink_eh_frame_cie, sizeof (glink_eh_frame_cie)); | |
13729 | /* CIE length (rewrite in case little-endian). */ | |
2e0ce1c8 | 13730 | last_fde_len = ((sizeof (glink_eh_frame_cie) + align - 1) & -align) - 4; |
da44f4e5 | 13731 | bfd_put_32 (htab->elf.dynobj, last_fde_len, p); |
2e0ce1c8 | 13732 | p += last_fde_len + 4; |
da44f4e5 | 13733 | |
d4aaa2a0 | 13734 | for (group = htab->group; group != NULL; group = group->next) |
df136d64 | 13735 | if (group->eh_size != 0) |
da44f4e5 | 13736 | { |
df136d64 | 13737 | group->eh_base = p - htab->glink_eh_frame->contents; |
da44f4e5 | 13738 | last_fde = p; |
df136d64 | 13739 | last_fde_len = ((group->eh_size + 17 + align - 1) & -align) - 4; |
da44f4e5 | 13740 | /* FDE length. */ |
2e0ce1c8 | 13741 | bfd_put_32 (htab->elf.dynobj, last_fde_len, p); |
da44f4e5 AM |
13742 | p += 4; |
13743 | /* CIE pointer. */ | |
13744 | val = p - htab->glink_eh_frame->contents; | |
13745 | bfd_put_32 (htab->elf.dynobj, val, p); | |
13746 | p += 4; | |
13747 | /* Offset to stub section, written later. */ | |
13748 | p += 4; | |
13749 | /* stub section size. */ | |
d4aaa2a0 | 13750 | bfd_put_32 (htab->elf.dynobj, group->stub_sec->size, p); |
da44f4e5 AM |
13751 | p += 4; |
13752 | /* Augmentation. */ | |
13753 | p += 1; | |
df136d64 AM |
13754 | /* Make sure we don't have all nops. This is enough for |
13755 | elf-eh-frame.c to detect the last non-nop opcode. */ | |
13756 | p[group->eh_size - 1] = DW_CFA_advance_loc + 1; | |
d4aaa2a0 | 13757 | p = last_fde + last_fde_len + 4; |
da44f4e5 AM |
13758 | } |
13759 | if (htab->glink != NULL && htab->glink->size != 0) | |
13760 | { | |
13761 | last_fde = p; | |
2e0ce1c8 | 13762 | last_fde_len = ((24 + align - 1) & -align) - 4; |
da44f4e5 | 13763 | /* FDE length. */ |
2e0ce1c8 | 13764 | bfd_put_32 (htab->elf.dynobj, last_fde_len, p); |
da44f4e5 AM |
13765 | p += 4; |
13766 | /* CIE pointer. */ | |
13767 | val = p - htab->glink_eh_frame->contents; | |
13768 | bfd_put_32 (htab->elf.dynobj, val, p); | |
13769 | p += 4; | |
13770 | /* Offset to .glink, written later. */ | |
13771 | p += 4; | |
13772 | /* .glink size. */ | |
13773 | bfd_put_32 (htab->elf.dynobj, htab->glink->size - 8, p); | |
13774 | p += 4; | |
13775 | /* Augmentation. */ | |
13776 | p += 1; | |
13777 | ||
13778 | *p++ = DW_CFA_advance_loc + 1; | |
13779 | *p++ = DW_CFA_register; | |
13780 | *p++ = 65; | |
9f08fa5c | 13781 | *p++ = htab->opd_abi ? 12 : 0; |
15a3a14f | 13782 | *p++ = DW_CFA_advance_loc + (htab->opd_abi ? 5 : 7); |
da44f4e5 AM |
13783 | *p++ = DW_CFA_restore_extended; |
13784 | *p++ = 65; | |
2e0ce1c8 | 13785 | p += ((24 + align - 1) & -align) - 24; |
da44f4e5 AM |
13786 | } |
13787 | /* Subsume any padding into the last FDE if user .eh_frame | |
13788 | sections are aligned more than glink_eh_frame. Otherwise any | |
13789 | zero padding will be seen as a terminator. */ | |
2e0ce1c8 | 13790 | align = 1ul << htab->glink_eh_frame->output_section->alignment_power; |
da44f4e5 | 13791 | size = p - htab->glink_eh_frame->contents; |
2e0ce1c8 | 13792 | pad = ((size + align - 1) & -align) - size; |
da44f4e5 AM |
13793 | htab->glink_eh_frame->size = size + pad; |
13794 | bfd_put_32 (htab->elf.dynobj, last_fde_len + pad, last_fde); | |
13795 | } | |
13796 | ||
d969d15f | 13797 | maybe_strip_output (info, htab->brlt); |
2efec98b AM |
13798 | if (htab->relbrlt != NULL) |
13799 | maybe_strip_output (info, htab->relbrlt); | |
d969d15f AM |
13800 | if (htab->glink_eh_frame != NULL) |
13801 | maybe_strip_output (info, htab->glink_eh_frame); | |
721956f4 | 13802 | |
b34976b6 | 13803 | return TRUE; |
721956f4 AM |
13804 | } |
13805 | ||
13806 | /* Called after we have determined section placement. If sections | |
805fc799 | 13807 | move, we'll be called again. Provide a value for TOCstart. */ |
721956f4 | 13808 | |
805fc799 | 13809 | bfd_vma |
1c865ab2 | 13810 | ppc64_elf_set_toc (struct bfd_link_info *info, bfd *obfd) |
721956f4 | 13811 | { |
805fc799 | 13812 | asection *s; |
a27e685f | 13813 | bfd_vma TOCstart, adjust; |
721956f4 | 13814 | |
43417696 AM |
13815 | if (info != NULL) |
13816 | { | |
13817 | struct elf_link_hash_entry *h; | |
13818 | struct elf_link_hash_table *htab = elf_hash_table (info); | |
13819 | ||
13820 | if (is_elf_hash_table (htab) | |
13821 | && htab->hgot != NULL) | |
13822 | h = htab->hgot; | |
13823 | else | |
13824 | { | |
13825 | h = elf_link_hash_lookup (htab, ".TOC.", FALSE, FALSE, TRUE); | |
13826 | if (is_elf_hash_table (htab)) | |
13827 | htab->hgot = h; | |
13828 | } | |
13829 | if (h != NULL | |
13830 | && h->root.type == bfd_link_hash_defined | |
13831 | && !h->root.linker_def | |
13832 | && (!is_elf_hash_table (htab) | |
13833 | || h->def_regular)) | |
13834 | { | |
ed7007c1 | 13835 | TOCstart = defined_sym_val (h) - TOC_BASE_OFF; |
43417696 AM |
13836 | _bfd_set_gp_value (obfd, TOCstart); |
13837 | return TOCstart; | |
13838 | } | |
13839 | } | |
13840 | ||
805fc799 AM |
13841 | /* The TOC consists of sections .got, .toc, .tocbss, .plt in that |
13842 | order. The TOC starts where the first of these sections starts. */ | |
13843 | s = bfd_get_section_by_name (obfd, ".got"); | |
e054468f | 13844 | if (s == NULL || (s->flags & SEC_EXCLUDE) != 0) |
805fc799 | 13845 | s = bfd_get_section_by_name (obfd, ".toc"); |
e054468f | 13846 | if (s == NULL || (s->flags & SEC_EXCLUDE) != 0) |
805fc799 | 13847 | s = bfd_get_section_by_name (obfd, ".tocbss"); |
e054468f | 13848 | if (s == NULL || (s->flags & SEC_EXCLUDE) != 0) |
805fc799 | 13849 | s = bfd_get_section_by_name (obfd, ".plt"); |
e054468f | 13850 | if (s == NULL || (s->flags & SEC_EXCLUDE) != 0) |
805fc799 AM |
13851 | { |
13852 | /* This may happen for | |
13853 | o references to TOC base (SYM@toc / TOC[tc0]) without a | |
13854 | .toc directive | |
13855 | o bad linker script | |
13856 | o --gc-sections and empty TOC sections | |
13857 | ||
13858 | FIXME: Warn user? */ | |
13859 | ||
13860 | /* Look for a likely section. We probably won't even be | |
13861 | using TOCstart. */ | |
13862 | for (s = obfd->sections; s != NULL; s = s->next) | |
e054468f AM |
13863 | if ((s->flags & (SEC_ALLOC | SEC_SMALL_DATA | SEC_READONLY |
13864 | | SEC_EXCLUDE)) | |
805fc799 AM |
13865 | == (SEC_ALLOC | SEC_SMALL_DATA)) |
13866 | break; | |
721956f4 | 13867 | if (s == NULL) |
805fc799 | 13868 | for (s = obfd->sections; s != NULL; s = s->next) |
e054468f | 13869 | if ((s->flags & (SEC_ALLOC | SEC_SMALL_DATA | SEC_EXCLUDE)) |
805fc799 AM |
13870 | == (SEC_ALLOC | SEC_SMALL_DATA)) |
13871 | break; | |
721956f4 | 13872 | if (s == NULL) |
805fc799 | 13873 | for (s = obfd->sections; s != NULL; s = s->next) |
e054468f AM |
13874 | if ((s->flags & (SEC_ALLOC | SEC_READONLY | SEC_EXCLUDE)) |
13875 | == SEC_ALLOC) | |
805fc799 | 13876 | break; |
721956f4 | 13877 | if (s == NULL) |
805fc799 | 13878 | for (s = obfd->sections; s != NULL; s = s->next) |
e054468f | 13879 | if ((s->flags & (SEC_ALLOC | SEC_EXCLUDE)) == SEC_ALLOC) |
805fc799 AM |
13880 | break; |
13881 | } | |
721956f4 | 13882 | |
805fc799 AM |
13883 | TOCstart = 0; |
13884 | if (s != NULL) | |
13885 | TOCstart = s->output_section->vma + s->output_offset; | |
721956f4 | 13886 | |
a27e685f AM |
13887 | /* Force alignment. */ |
13888 | adjust = TOCstart & (TOC_BASE_ALIGN - 1); | |
13889 | TOCstart -= adjust; | |
1c865ab2 AM |
13890 | _bfd_set_gp_value (obfd, TOCstart); |
13891 | ||
810d4e75 | 13892 | if (info != NULL && s != NULL) |
1c865ab2 AM |
13893 | { |
13894 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
13895 | ||
810d4e75 AM |
13896 | if (htab != NULL) |
13897 | { | |
13898 | if (htab->elf.hgot != NULL) | |
13899 | { | |
a27e685f | 13900 | htab->elf.hgot->root.u.def.value = TOC_BASE_OFF - adjust; |
810d4e75 AM |
13901 | htab->elf.hgot->root.u.def.section = s; |
13902 | } | |
13903 | } | |
13904 | else | |
1c865ab2 | 13905 | { |
810d4e75 AM |
13906 | struct bfd_link_hash_entry *bh = NULL; |
13907 | _bfd_generic_link_add_one_symbol (info, obfd, ".TOC.", BSF_GLOBAL, | |
a27e685f AM |
13908 | s, TOC_BASE_OFF - adjust, |
13909 | NULL, FALSE, FALSE, &bh); | |
1c865ab2 AM |
13910 | } |
13911 | } | |
805fc799 | 13912 | return TOCstart; |
721956f4 AM |
13913 | } |
13914 | ||
a345bc8d | 13915 | /* Called via elf_link_hash_traverse from ppc64_elf_build_stubs to |
49c09209 | 13916 | write out any global entry stubs, and PLT relocations. */ |
a345bc8d AM |
13917 | |
13918 | static bfd_boolean | |
49c09209 | 13919 | build_global_entry_stubs_and_plt (struct elf_link_hash_entry *h, void *inf) |
a345bc8d AM |
13920 | { |
13921 | struct bfd_link_info *info; | |
13922 | struct ppc_link_hash_table *htab; | |
49c09209 | 13923 | struct plt_entry *ent; |
a345bc8d AM |
13924 | asection *s; |
13925 | ||
13926 | if (h->root.type == bfd_link_hash_indirect) | |
13927 | return TRUE; | |
13928 | ||
49c09209 AM |
13929 | info = inf; |
13930 | htab = ppc_hash_table (info); | |
13931 | if (htab == NULL) | |
13932 | return FALSE; | |
13933 | ||
13934 | for (ent = h->plt.plist; ent != NULL; ent = ent->next) | |
13935 | if (ent->plt.offset != (bfd_vma) -1) | |
13936 | { | |
13937 | /* This symbol has an entry in the procedure linkage | |
13938 | table. Set it up. */ | |
13939 | Elf_Internal_Rela rela; | |
2d7ad24e | 13940 | asection *plt, *relplt; |
49c09209 AM |
13941 | bfd_byte *loc; |
13942 | ||
13943 | if (!htab->elf.dynamic_sections_created | |
13944 | || h->dynindx == -1) | |
13945 | { | |
13946 | if (!(h->def_regular | |
13947 | && (h->root.type == bfd_link_hash_defined | |
13948 | || h->root.type == bfd_link_hash_defweak))) | |
13949 | continue; | |
2d7ad24e AM |
13950 | if (h->type == STT_GNU_IFUNC) |
13951 | { | |
13952 | plt = htab->elf.iplt; | |
13953 | relplt = htab->elf.irelplt; | |
cebd6b8a | 13954 | htab->elf.ifunc_resolvers = TRUE; |
2d7ad24e AM |
13955 | if (htab->opd_abi) |
13956 | rela.r_info = ELF64_R_INFO (0, R_PPC64_JMP_IREL); | |
13957 | else | |
13958 | rela.r_info = ELF64_R_INFO (0, R_PPC64_IRELATIVE); | |
13959 | } | |
49c09209 | 13960 | else |
2d7ad24e AM |
13961 | { |
13962 | plt = htab->pltlocal; | |
13963 | if (bfd_link_pic (info)) | |
13964 | { | |
13965 | relplt = htab->relpltlocal; | |
13966 | if (htab->opd_abi) | |
13967 | rela.r_info = ELF64_R_INFO (0, R_PPC64_JMP_SLOT); | |
13968 | else | |
13969 | rela.r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE); | |
13970 | } | |
13971 | else | |
13972 | relplt = NULL; | |
13973 | } | |
ed7007c1 | 13974 | rela.r_addend = defined_sym_val (h) + ent->addend; |
2d7ad24e AM |
13975 | |
13976 | if (relplt == NULL) | |
13977 | { | |
13978 | loc = plt->contents + ent->plt.offset; | |
13979 | bfd_put_64 (info->output_bfd, rela.r_addend, loc); | |
13980 | if (htab->opd_abi) | |
13981 | { | |
13982 | bfd_vma toc = elf_gp (info->output_bfd); | |
13983 | toc += htab->sec_info[h->root.u.def.section->id].toc_off; | |
13984 | bfd_put_64 (info->output_bfd, toc, loc + 8); | |
13985 | } | |
13986 | } | |
13987 | else | |
13988 | { | |
13989 | rela.r_offset = (plt->output_section->vma | |
13990 | + plt->output_offset | |
13991 | + ent->plt.offset); | |
13992 | loc = relplt->contents + (relplt->reloc_count++ | |
13993 | * sizeof (Elf64_External_Rela)); | |
13994 | bfd_elf64_swap_reloca_out (info->output_bfd, &rela, loc); | |
13995 | } | |
49c09209 AM |
13996 | } |
13997 | else | |
13998 | { | |
13999 | rela.r_offset = (htab->elf.splt->output_section->vma | |
14000 | + htab->elf.splt->output_offset | |
14001 | + ent->plt.offset); | |
14002 | rela.r_info = ELF64_R_INFO (h->dynindx, R_PPC64_JMP_SLOT); | |
14003 | rela.r_addend = ent->addend; | |
14004 | loc = (htab->elf.srelplt->contents | |
14005 | + ((ent->plt.offset - PLT_INITIAL_ENTRY_SIZE (htab)) | |
14006 | / PLT_ENTRY_SIZE (htab) * sizeof (Elf64_External_Rela))); | |
14007 | if (h->type == STT_GNU_IFUNC && is_static_defined (h)) | |
cebd6b8a | 14008 | htab->elf.ifunc_resolvers = TRUE; |
2d7ad24e | 14009 | bfd_elf64_swap_reloca_out (info->output_bfd, &rela, loc); |
49c09209 | 14010 | } |
49c09209 AM |
14011 | } |
14012 | ||
a345bc8d AM |
14013 | if (!h->pointer_equality_needed) |
14014 | return TRUE; | |
14015 | ||
14016 | if (h->def_regular) | |
14017 | return TRUE; | |
14018 | ||
9e390558 | 14019 | s = htab->global_entry; |
49c09209 AM |
14020 | if (s == NULL || s->size == 0) |
14021 | return TRUE; | |
14022 | ||
14023 | for (ent = h->plt.plist; ent != NULL; ent = ent->next) | |
14024 | if (ent->plt.offset != (bfd_vma) -1 | |
14025 | && ent->addend == 0) | |
a345bc8d AM |
14026 | { |
14027 | bfd_byte *p; | |
14028 | asection *plt; | |
14029 | bfd_vma off; | |
14030 | ||
a345bc8d | 14031 | p = s->contents + h->root.u.def.value; |
33e44f2e | 14032 | plt = htab->elf.splt; |
a345bc8d AM |
14033 | if (!htab->elf.dynamic_sections_created |
14034 | || h->dynindx == -1) | |
2d7ad24e AM |
14035 | { |
14036 | if (h->type == STT_GNU_IFUNC) | |
14037 | plt = htab->elf.iplt; | |
14038 | else | |
14039 | plt = htab->pltlocal; | |
14040 | } | |
49c09209 | 14041 | off = ent->plt.offset + plt->output_offset + plt->output_section->vma; |
a345bc8d AM |
14042 | off -= h->root.u.def.value + s->output_offset + s->output_section->vma; |
14043 | ||
14044 | if (off + 0x80008000 > 0xffffffff || (off & 3) != 0) | |
14045 | { | |
14046 | info->callbacks->einfo | |
c1c8c1ef | 14047 | (_("%P: linkage table error against `%pT'\n"), |
a345bc8d AM |
14048 | h->root.root.string); |
14049 | bfd_set_error (bfd_error_bad_value); | |
14050 | htab->stub_error = TRUE; | |
14051 | } | |
14052 | ||
7341d5e2 AM |
14053 | htab->stub_count[ppc_stub_global_entry - 1] += 1; |
14054 | if (htab->params->emit_stub_syms) | |
14055 | { | |
14056 | size_t len = strlen (h->root.root.string); | |
14057 | char *name = bfd_malloc (sizeof "12345678.global_entry." + len); | |
14058 | ||
14059 | if (name == NULL) | |
14060 | return FALSE; | |
14061 | ||
14062 | sprintf (name, "%08x.global_entry.%s", s->id, h->root.root.string); | |
14063 | h = elf_link_hash_lookup (&htab->elf, name, TRUE, FALSE, FALSE); | |
14064 | if (h == NULL) | |
14065 | return FALSE; | |
14066 | if (h->root.type == bfd_link_hash_new) | |
14067 | { | |
14068 | h->root.type = bfd_link_hash_defined; | |
14069 | h->root.u.def.section = s; | |
14070 | h->root.u.def.value = p - s->contents; | |
14071 | h->ref_regular = 1; | |
14072 | h->def_regular = 1; | |
14073 | h->ref_regular_nonweak = 1; | |
14074 | h->forced_local = 1; | |
14075 | h->non_elf = 0; | |
2ec55de3 | 14076 | h->root.linker_def = 1; |
7341d5e2 AM |
14077 | } |
14078 | } | |
14079 | ||
a345bc8d AM |
14080 | if (PPC_HA (off) != 0) |
14081 | { | |
14082 | bfd_put_32 (s->owner, ADDIS_R12_R12 | PPC_HA (off), p); | |
14083 | p += 4; | |
14084 | } | |
14085 | bfd_put_32 (s->owner, LD_R12_0R12 | PPC_LO (off), p); | |
14086 | p += 4; | |
14087 | bfd_put_32 (s->owner, MTCTR_R12, p); | |
14088 | p += 4; | |
407aa07c | 14089 | bfd_put_32 (s->owner, BCTR, p); |
a345bc8d AM |
14090 | break; |
14091 | } | |
14092 | return TRUE; | |
14093 | } | |
14094 | ||
49c09209 AM |
14095 | /* Write PLT relocs for locals. */ |
14096 | ||
14097 | static bfd_boolean | |
14098 | write_plt_relocs_for_local_syms (struct bfd_link_info *info) | |
14099 | { | |
14100 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
14101 | bfd *ibfd; | |
14102 | ||
14103 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next) | |
14104 | { | |
14105 | struct got_entry **lgot_ents, **end_lgot_ents; | |
14106 | struct plt_entry **local_plt, **lplt, **end_local_plt; | |
14107 | Elf_Internal_Shdr *symtab_hdr; | |
14108 | bfd_size_type locsymcount; | |
14109 | Elf_Internal_Sym *local_syms = NULL; | |
14110 | struct plt_entry *ent; | |
14111 | ||
14112 | if (!is_ppc64_elf (ibfd)) | |
14113 | continue; | |
14114 | ||
14115 | lgot_ents = elf_local_got_ents (ibfd); | |
14116 | if (!lgot_ents) | |
14117 | continue; | |
14118 | ||
14119 | symtab_hdr = &elf_symtab_hdr (ibfd); | |
14120 | locsymcount = symtab_hdr->sh_info; | |
14121 | end_lgot_ents = lgot_ents + locsymcount; | |
14122 | local_plt = (struct plt_entry **) end_lgot_ents; | |
14123 | end_local_plt = local_plt + locsymcount; | |
14124 | for (lplt = local_plt; lplt < end_local_plt; ++lplt) | |
14125 | for (ent = *lplt; ent != NULL; ent = ent->next) | |
14126 | if (ent->plt.offset != (bfd_vma) -1) | |
14127 | { | |
14128 | Elf_Internal_Sym *sym; | |
14129 | asection *sym_sec; | |
14130 | asection *plt, *relplt; | |
14131 | bfd_byte *loc; | |
14132 | bfd_vma val; | |
49c09209 AM |
14133 | |
14134 | if (!get_sym_h (NULL, &sym, &sym_sec, NULL, &local_syms, | |
14135 | lplt - local_plt, ibfd)) | |
14136 | { | |
c9594989 | 14137 | if (symtab_hdr->contents != (unsigned char *) local_syms) |
49c09209 AM |
14138 | free (local_syms); |
14139 | return FALSE; | |
14140 | } | |
14141 | ||
14142 | val = sym->st_value + ent->addend; | |
ba85c15d AM |
14143 | if (ELF_ST_TYPE (sym->st_info) != STT_GNU_IFUNC) |
14144 | val += PPC64_LOCAL_ENTRY_OFFSET (sym->st_other); | |
49c09209 AM |
14145 | if (sym_sec != NULL && sym_sec->output_section != NULL) |
14146 | val += sym_sec->output_offset + sym_sec->output_section->vma; | |
14147 | ||
2d7ad24e AM |
14148 | if (ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC) |
14149 | { | |
cebd6b8a | 14150 | htab->elf.ifunc_resolvers = TRUE; |
2d7ad24e AM |
14151 | plt = htab->elf.iplt; |
14152 | relplt = htab->elf.irelplt; | |
14153 | } | |
14154 | else | |
14155 | { | |
14156 | plt = htab->pltlocal; | |
14157 | relplt = bfd_link_pic (info) ? htab->relpltlocal : NULL; | |
14158 | } | |
49c09209 | 14159 | |
2d7ad24e AM |
14160 | if (relplt == NULL) |
14161 | { | |
14162 | loc = plt->contents + ent->plt.offset; | |
14163 | bfd_put_64 (info->output_bfd, val, loc); | |
14164 | if (htab->opd_abi) | |
14165 | { | |
14166 | bfd_vma toc = elf_gp (ibfd); | |
14167 | bfd_put_64 (info->output_bfd, toc, loc + 8); | |
14168 | } | |
14169 | } | |
49c09209 | 14170 | else |
2d7ad24e AM |
14171 | { |
14172 | Elf_Internal_Rela rela; | |
14173 | rela.r_offset = (ent->plt.offset | |
14174 | + plt->output_offset | |
14175 | + plt->output_section->vma); | |
14176 | if (ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC) | |
14177 | { | |
14178 | if (htab->opd_abi) | |
14179 | rela.r_info = ELF64_R_INFO (0, R_PPC64_JMP_IREL); | |
14180 | else | |
14181 | rela.r_info = ELF64_R_INFO (0, R_PPC64_IRELATIVE); | |
14182 | } | |
14183 | else | |
14184 | { | |
14185 | if (htab->opd_abi) | |
14186 | rela.r_info = ELF64_R_INFO (0, R_PPC64_JMP_SLOT); | |
14187 | else | |
14188 | rela.r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE); | |
14189 | } | |
14190 | rela.r_addend = val; | |
14191 | loc = relplt->contents + (relplt->reloc_count++ | |
14192 | * sizeof (Elf64_External_Rela)); | |
14193 | bfd_elf64_swap_reloca_out (info->output_bfd, &rela, loc); | |
14194 | } | |
49c09209 AM |
14195 | } |
14196 | ||
14197 | if (local_syms != NULL | |
14198 | && symtab_hdr->contents != (unsigned char *) local_syms) | |
14199 | { | |
14200 | if (!info->keep_memory) | |
14201 | free (local_syms); | |
14202 | else | |
14203 | symtab_hdr->contents = (unsigned char *) local_syms; | |
14204 | } | |
14205 | } | |
14206 | return TRUE; | |
14207 | } | |
14208 | ||
a804e476 AM |
14209 | /* Emit the static wrapper function preserving registers around a |
14210 | __tls_get_addr_opt call. */ | |
14211 | ||
14212 | static bfd_boolean | |
14213 | emit_tga_desc (struct ppc_link_hash_table *htab) | |
14214 | { | |
14215 | asection *stub_sec = htab->tga_group->stub_sec; | |
14216 | unsigned int cfa_updt = 11 * 4; | |
14217 | bfd_byte *p; | |
14218 | bfd_vma to, from, delta; | |
14219 | ||
14220 | BFD_ASSERT (htab->tga_desc_fd->elf.root.type == bfd_link_hash_defined | |
14221 | && htab->tga_desc_fd->elf.root.u.def.section == stub_sec | |
14222 | && htab->tga_desc_fd->elf.root.u.def.value == 0); | |
14223 | to = defined_sym_val (&htab->tls_get_addr_fd->elf); | |
14224 | from = defined_sym_val (&htab->tga_desc_fd->elf) + cfa_updt; | |
14225 | delta = to - from; | |
14226 | if (delta + (1 << 25) >= 1 << 26) | |
14227 | { | |
14228 | _bfd_error_handler (_("__tls_get_addr call offset overflow")); | |
14229 | htab->stub_error = TRUE; | |
14230 | return FALSE; | |
14231 | } | |
14232 | ||
14233 | p = stub_sec->contents; | |
14234 | p = tls_get_addr_prologue (htab->elf.dynobj, p, htab); | |
14235 | bfd_put_32 (stub_sec->owner, B_DOT | 1 | (delta & 0x3fffffc), p); | |
14236 | p += 4; | |
14237 | p = tls_get_addr_epilogue (htab->elf.dynobj, p, htab); | |
14238 | return stub_sec->size == (bfd_size_type) (p - stub_sec->contents); | |
14239 | } | |
14240 | ||
14241 | /* Emit eh_frame describing the static wrapper function. */ | |
14242 | ||
14243 | static bfd_byte * | |
14244 | emit_tga_desc_eh_frame (struct ppc_link_hash_table *htab, bfd_byte *p) | |
14245 | { | |
14246 | unsigned int cfa_updt = 11 * 4; | |
14247 | unsigned int i; | |
14248 | ||
14249 | *p++ = DW_CFA_advance_loc + cfa_updt / 4; | |
14250 | *p++ = DW_CFA_def_cfa_offset; | |
14251 | if (htab->opd_abi) | |
14252 | { | |
14253 | *p++ = 128; | |
14254 | *p++ = 1; | |
14255 | } | |
14256 | else | |
14257 | *p++ = 96; | |
14258 | *p++ = DW_CFA_offset_extended_sf; | |
14259 | *p++ = 65; | |
14260 | *p++ = (-16 / 8) & 0x7f; | |
14261 | for (i = 4; i < 12; i++) | |
14262 | { | |
14263 | *p++ = DW_CFA_offset + i; | |
14264 | *p++ = (htab->opd_abi ? 13 : 12) - i; | |
14265 | } | |
14266 | *p++ = DW_CFA_advance_loc + 10; | |
14267 | *p++ = DW_CFA_def_cfa_offset; | |
14268 | *p++ = 0; | |
14269 | for (i = 4; i < 12; i++) | |
14270 | *p++ = DW_CFA_restore + i; | |
14271 | *p++ = DW_CFA_advance_loc + 2; | |
14272 | *p++ = DW_CFA_restore_extended; | |
14273 | *p++ = 65; | |
14274 | return p; | |
14275 | } | |
14276 | ||
721956f4 AM |
14277 | /* Build all the stubs associated with the current output file. |
14278 | The stubs are kept in a hash table attached to the main linker | |
14279 | hash table. This function is called via gldelf64ppc_finish. */ | |
14280 | ||
b34976b6 | 14281 | bfd_boolean |
e7d1c40c | 14282 | ppc64_elf_build_stubs (struct bfd_link_info *info, |
4ce794b7 | 14283 | char **stats) |
5d1634d7 AM |
14284 | { |
14285 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
a4b6fadd | 14286 | struct map_stub *group; |
721956f4 | 14287 | asection *stub_sec; |
5d1634d7 | 14288 | bfd_byte *p; |
e717da7e | 14289 | int stub_sec_count = 0; |
5d1634d7 | 14290 | |
4dfe6ac6 NC |
14291 | if (htab == NULL) |
14292 | return FALSE; | |
14293 | ||
eea6121a | 14294 | /* Allocate memory to hold the linker stubs. */ |
d4aaa2a0 | 14295 | for (group = htab->group; group != NULL; group = group->next) |
df136d64 AM |
14296 | { |
14297 | group->eh_size = 0; | |
14298 | group->lr_restore = 0; | |
14299 | if ((stub_sec = group->stub_sec) != NULL | |
14300 | && stub_sec->size != 0) | |
14301 | { | |
14302 | stub_sec->contents = bfd_zalloc (htab->params->stub_bfd, | |
14303 | stub_sec->size); | |
14304 | if (stub_sec->contents == NULL) | |
14305 | return FALSE; | |
14306 | stub_sec->size = 0; | |
14307 | } | |
14308 | } | |
5d1634d7 | 14309 | |
23eb7e01 | 14310 | if (htab->glink != NULL && htab->glink->size != 0) |
5d1634d7 | 14311 | { |
9f951329 | 14312 | unsigned int indx; |
ad8e1ba5 | 14313 | bfd_vma plt0; |
9f951329 | 14314 | |
721956f4 | 14315 | /* Build the .glink plt call stub. */ |
e7d1c40c | 14316 | if (htab->params->emit_stub_syms) |
97b639ba AM |
14317 | { |
14318 | struct elf_link_hash_entry *h; | |
468392fb AM |
14319 | h = elf_link_hash_lookup (&htab->elf, "__glink_PLTresolve", |
14320 | TRUE, FALSE, FALSE); | |
97b639ba AM |
14321 | if (h == NULL) |
14322 | return FALSE; | |
14323 | if (h->root.type == bfd_link_hash_new) | |
14324 | { | |
14325 | h->root.type = bfd_link_hash_defined; | |
14326 | h->root.u.def.section = htab->glink; | |
ee4bf8d2 | 14327 | h->root.u.def.value = 8; |
f5385ebf AM |
14328 | h->ref_regular = 1; |
14329 | h->def_regular = 1; | |
14330 | h->ref_regular_nonweak = 1; | |
14331 | h->forced_local = 1; | |
14332 | h->non_elf = 0; | |
2ec55de3 | 14333 | h->root.linker_def = 1; |
97b639ba AM |
14334 | } |
14335 | } | |
33e44f2e AM |
14336 | plt0 = (htab->elf.splt->output_section->vma |
14337 | + htab->elf.splt->output_offset | |
14338 | - 16); | |
176a0d42 AM |
14339 | if (info->emitrelocations) |
14340 | { | |
14341 | Elf_Internal_Rela *r = get_relocs (htab->glink, 1); | |
14342 | if (r == NULL) | |
14343 | return FALSE; | |
14344 | r->r_offset = (htab->glink->output_offset | |
14345 | + htab->glink->output_section->vma); | |
14346 | r->r_info = ELF64_R_INFO (0, R_PPC64_REL64); | |
14347 | r->r_addend = plt0; | |
14348 | } | |
4ce794b7 | 14349 | p = htab->glink->contents; |
176a0d42 | 14350 | plt0 -= htab->glink->output_section->vma + htab->glink->output_offset; |
ee4bf8d2 AM |
14351 | bfd_put_64 (htab->glink->owner, plt0, p); |
14352 | p += 8; | |
b9e5796b AM |
14353 | if (htab->opd_abi) |
14354 | { | |
14355 | bfd_put_32 (htab->glink->owner, MFLR_R12, p); | |
14356 | p += 4; | |
14357 | bfd_put_32 (htab->glink->owner, BCL_20_31, p); | |
14358 | p += 4; | |
14359 | bfd_put_32 (htab->glink->owner, MFLR_R11, p); | |
14360 | p += 4; | |
14361 | bfd_put_32 (htab->glink->owner, LD_R2_0R11 | (-16 & 0xfffc), p); | |
14362 | p += 4; | |
14363 | bfd_put_32 (htab->glink->owner, MTLR_R12, p); | |
14364 | p += 4; | |
14365 | bfd_put_32 (htab->glink->owner, ADD_R11_R2_R11, p); | |
14366 | p += 4; | |
14367 | bfd_put_32 (htab->glink->owner, LD_R12_0R11, p); | |
14368 | p += 4; | |
14369 | bfd_put_32 (htab->glink->owner, LD_R2_0R11 | 8, p); | |
14370 | p += 4; | |
14371 | bfd_put_32 (htab->glink->owner, MTCTR_R12, p); | |
14372 | p += 4; | |
14373 | bfd_put_32 (htab->glink->owner, LD_R11_0R11 | 16, p); | |
14374 | p += 4; | |
14375 | } | |
14376 | else | |
14377 | { | |
14378 | bfd_put_32 (htab->glink->owner, MFLR_R0, p); | |
14379 | p += 4; | |
14380 | bfd_put_32 (htab->glink->owner, BCL_20_31, p); | |
14381 | p += 4; | |
14382 | bfd_put_32 (htab->glink->owner, MFLR_R11, p); | |
14383 | p += 4; | |
f378ab09 AM |
14384 | bfd_put_32 (htab->glink->owner, STD_R2_0R1 + 24, p); |
14385 | p += 4; | |
b9e5796b AM |
14386 | bfd_put_32 (htab->glink->owner, LD_R2_0R11 | (-16 & 0xfffc), p); |
14387 | p += 4; | |
14388 | bfd_put_32 (htab->glink->owner, MTLR_R0, p); | |
14389 | p += 4; | |
14390 | bfd_put_32 (htab->glink->owner, SUB_R12_R12_R11, p); | |
14391 | p += 4; | |
14392 | bfd_put_32 (htab->glink->owner, ADD_R11_R2_R11, p); | |
14393 | p += 4; | |
14394 | bfd_put_32 (htab->glink->owner, ADDI_R0_R12 | (-48 & 0xffff), p); | |
14395 | p += 4; | |
14396 | bfd_put_32 (htab->glink->owner, LD_R12_0R11, p); | |
14397 | p += 4; | |
14398 | bfd_put_32 (htab->glink->owner, SRDI_R0_R0_2, p); | |
14399 | p += 4; | |
14400 | bfd_put_32 (htab->glink->owner, MTCTR_R12, p); | |
14401 | p += 4; | |
14402 | bfd_put_32 (htab->glink->owner, LD_R11_0R11 | 8, p); | |
14403 | p += 4; | |
14404 | } | |
407aa07c AM |
14405 | bfd_put_32 (htab->glink->owner, BCTR, p); |
14406 | p += 4; | |
c75bc4f7 | 14407 | BFD_ASSERT (p == htab->glink->contents + GLINK_PLTRESOLVE_SIZE (htab)); |
ad8e1ba5 | 14408 | |
9f951329 AM |
14409 | /* Build the .glink lazy link call stubs. */ |
14410 | indx = 0; | |
9e390558 | 14411 | while (p < htab->glink->contents + htab->glink->size) |
9f951329 | 14412 | { |
b9e5796b | 14413 | if (htab->opd_abi) |
9f951329 | 14414 | { |
b9e5796b AM |
14415 | if (indx < 0x8000) |
14416 | { | |
14417 | bfd_put_32 (htab->glink->owner, LI_R0_0 | indx, p); | |
14418 | p += 4; | |
14419 | } | |
14420 | else | |
14421 | { | |
14422 | bfd_put_32 (htab->glink->owner, LIS_R0_0 | PPC_HI (indx), p); | |
14423 | p += 4; | |
14424 | bfd_put_32 (htab->glink->owner, ORI_R0_R0_0 | PPC_LO (indx), | |
14425 | p); | |
14426 | p += 4; | |
14427 | } | |
9f951329 | 14428 | } |
4ce794b7 | 14429 | bfd_put_32 (htab->glink->owner, |
ee4bf8d2 | 14430 | B_DOT | ((htab->glink->contents - p + 8) & 0x3fffffc), p); |
a16d5acb | 14431 | indx++; |
9f951329 AM |
14432 | p += 4; |
14433 | } | |
5d1634d7 | 14434 | } |
5d1634d7 | 14435 | |
a804e476 AM |
14436 | if (htab->tga_group != NULL) |
14437 | { | |
14438 | htab->tga_group->lr_restore = 23 * 4; | |
14439 | htab->tga_group->stub_sec->size = 24 * 4; | |
14440 | if (!emit_tga_desc (htab)) | |
14441 | return FALSE; | |
14442 | if (htab->glink_eh_frame != NULL | |
14443 | && htab->glink_eh_frame->size != 0) | |
14444 | { | |
14445 | size_t align = 4; | |
14446 | ||
14447 | p = htab->glink_eh_frame->contents; | |
14448 | p += (sizeof (glink_eh_frame_cie) + align - 1) & -align; | |
14449 | p += 17; | |
14450 | htab->tga_group->eh_size = emit_tga_desc_eh_frame (htab, p) - p; | |
14451 | } | |
14452 | } | |
14453 | ||
49c09209 AM |
14454 | /* Build .glink global entry stubs, and PLT relocs for globals. */ |
14455 | elf_link_hash_traverse (&htab->elf, build_global_entry_stubs_and_plt, info); | |
14456 | ||
14457 | if (!write_plt_relocs_for_local_syms (info)) | |
14458 | return FALSE; | |
9e390558 | 14459 | |
7341d5e2 | 14460 | if (htab->brlt != NULL && htab->brlt->size != 0) |
721956f4 | 14461 | { |
4ce794b7 | 14462 | htab->brlt->contents = bfd_zalloc (htab->brlt->owner, |
eea6121a | 14463 | htab->brlt->size); |
4ce794b7 | 14464 | if (htab->brlt->contents == NULL) |
b34976b6 | 14465 | return FALSE; |
721956f4 | 14466 | } |
ee75fd95 | 14467 | if (htab->relbrlt != NULL && htab->relbrlt->size != 0) |
63bc6f6c AM |
14468 | { |
14469 | htab->relbrlt->contents = bfd_zalloc (htab->relbrlt->owner, | |
eea6121a | 14470 | htab->relbrlt->size); |
63bc6f6c AM |
14471 | if (htab->relbrlt->contents == NULL) |
14472 | return FALSE; | |
14473 | } | |
5d1634d7 | 14474 | |
721956f4 AM |
14475 | /* Build the stubs as directed by the stub hash table. */ |
14476 | bfd_hash_traverse (&htab->stub_hash_table, ppc_build_one_stub, info); | |
5d1634d7 | 14477 | |
a4b6fadd AM |
14478 | for (group = htab->group; group != NULL; group = group->next) |
14479 | if (group->needs_save_res) | |
7dda8d3c | 14480 | group->stub_sec->size += htab->sfpr->size; |
a4b6fadd | 14481 | |
aa8a7074 AM |
14482 | if (htab->relbrlt != NULL) |
14483 | htab->relbrlt->reloc_count = 0; | |
14484 | ||
e7d1c40c | 14485 | if (htab->params->plt_stub_align != 0) |
d4aaa2a0 AM |
14486 | for (group = htab->group; group != NULL; group = group->next) |
14487 | if ((stub_sec = group->stub_sec) != NULL) | |
691d2e9a AM |
14488 | { |
14489 | int align = abs (htab->params->plt_stub_align); | |
14490 | stub_sec->size = (stub_sec->size + (1 << align) - 1) & -(1 << align); | |
14491 | } | |
794e51c0 | 14492 | |
7dda8d3c AM |
14493 | for (group = htab->group; group != NULL; group = group->next) |
14494 | if (group->needs_save_res) | |
14495 | { | |
14496 | stub_sec = group->stub_sec; | |
14497 | memcpy (stub_sec->contents + stub_sec->size - htab->sfpr->size, | |
14498 | htab->sfpr->contents, htab->sfpr->size); | |
14499 | if (htab->params->emit_stub_syms) | |
14500 | { | |
14501 | unsigned int i; | |
14502 | ||
14503 | for (i = 0; i < ARRAY_SIZE (save_res_funcs); i++) | |
14504 | if (!sfpr_define (info, &save_res_funcs[i], stub_sec)) | |
14505 | return FALSE; | |
14506 | } | |
14507 | } | |
14508 | ||
df136d64 AM |
14509 | if (htab->glink_eh_frame != NULL |
14510 | && htab->glink_eh_frame->size != 0) | |
14511 | { | |
14512 | bfd_vma val; | |
14513 | size_t align = 4; | |
14514 | ||
14515 | p = htab->glink_eh_frame->contents; | |
14516 | p += (sizeof (glink_eh_frame_cie) + align - 1) & -align; | |
14517 | ||
14518 | for (group = htab->group; group != NULL; group = group->next) | |
14519 | if (group->eh_size != 0) | |
14520 | { | |
14521 | /* Offset to stub section. */ | |
14522 | val = (group->stub_sec->output_section->vma | |
14523 | + group->stub_sec->output_offset); | |
14524 | val -= (htab->glink_eh_frame->output_section->vma | |
14525 | + htab->glink_eh_frame->output_offset | |
14526 | + (p + 8 - htab->glink_eh_frame->contents)); | |
14527 | if (val + 0x80000000 > 0xffffffff) | |
14528 | { | |
14529 | _bfd_error_handler | |
14530 | (_("%s offset too large for .eh_frame sdata4 encoding"), | |
14531 | group->stub_sec->name); | |
14532 | return FALSE; | |
14533 | } | |
14534 | bfd_put_32 (htab->elf.dynobj, val, p + 8); | |
14535 | p += (group->eh_size + 17 + 3) & -4; | |
14536 | } | |
14537 | if (htab->glink != NULL && htab->glink->size != 0) | |
14538 | { | |
14539 | /* Offset to .glink. */ | |
14540 | val = (htab->glink->output_section->vma | |
14541 | + htab->glink->output_offset | |
14542 | + 8); | |
14543 | val -= (htab->glink_eh_frame->output_section->vma | |
14544 | + htab->glink_eh_frame->output_offset | |
14545 | + (p + 8 - htab->glink_eh_frame->contents)); | |
14546 | if (val + 0x80000000 > 0xffffffff) | |
14547 | { | |
14548 | _bfd_error_handler | |
14549 | (_("%s offset too large for .eh_frame sdata4 encoding"), | |
14550 | htab->glink->name); | |
14551 | return FALSE; | |
14552 | } | |
14553 | bfd_put_32 (htab->elf.dynobj, val, p + 8); | |
14554 | p += (24 + align - 1) & -align; | |
14555 | } | |
14556 | } | |
14557 | ||
d4aaa2a0 AM |
14558 | for (group = htab->group; group != NULL; group = group->next) |
14559 | if ((stub_sec = group->stub_sec) != NULL) | |
e717da7e AM |
14560 | { |
14561 | stub_sec_count += 1; | |
c9301e31 AM |
14562 | if (stub_sec->rawsize != stub_sec->size |
14563 | && (htab->stub_iteration <= STUB_SHRINK_ITER | |
14564 | || stub_sec->rawsize < stub_sec->size)) | |
e717da7e AM |
14565 | break; |
14566 | } | |
5d1634d7 | 14567 | |
25516cc5 | 14568 | if (group != NULL) |
5d1634d7 | 14569 | { |
b34976b6 | 14570 | htab->stub_error = TRUE; |
cf97bcb0 | 14571 | _bfd_error_handler (_("stubs don't match calculated size")); |
5d1634d7 | 14572 | } |
721956f4 | 14573 | |
d2a300cf AM |
14574 | if (htab->stub_error) |
14575 | return FALSE; | |
14576 | ||
14577 | if (stats != NULL) | |
14578 | { | |
988b7300 AM |
14579 | char *groupmsg; |
14580 | if (asprintf (&groupmsg, | |
14581 | ngettext ("linker stubs in %u group\n", | |
14582 | "linker stubs in %u groups\n", | |
14583 | stub_sec_count), | |
14584 | stub_sec_count) < 0) | |
14585 | *stats = NULL; | |
14586 | else | |
14587 | { | |
14588 | if (asprintf (stats, _("%s" | |
14589 | " branch %lu\n" | |
14590 | " branch toc adj %lu\n" | |
14591 | " branch notoc %lu\n" | |
14592 | " branch both %lu\n" | |
14593 | " long branch %lu\n" | |
14594 | " long toc adj %lu\n" | |
14595 | " long notoc %lu\n" | |
14596 | " long both %lu\n" | |
14597 | " plt call %lu\n" | |
14598 | " plt call save %lu\n" | |
14599 | " plt call notoc %lu\n" | |
14600 | " plt call both %lu\n" | |
14601 | " global entry %lu"), | |
14602 | groupmsg, | |
14603 | htab->stub_count[ppc_stub_long_branch - 1], | |
14604 | htab->stub_count[ppc_stub_long_branch_r2off - 1], | |
14605 | htab->stub_count[ppc_stub_long_branch_notoc - 1], | |
14606 | htab->stub_count[ppc_stub_long_branch_both - 1], | |
14607 | htab->stub_count[ppc_stub_plt_branch - 1], | |
14608 | htab->stub_count[ppc_stub_plt_branch_r2off - 1], | |
14609 | htab->stub_count[ppc_stub_plt_branch_notoc - 1], | |
14610 | htab->stub_count[ppc_stub_plt_branch_both - 1], | |
14611 | htab->stub_count[ppc_stub_plt_call - 1], | |
14612 | htab->stub_count[ppc_stub_plt_call_r2save - 1], | |
14613 | htab->stub_count[ppc_stub_plt_call_notoc - 1], | |
14614 | htab->stub_count[ppc_stub_plt_call_both - 1], | |
14615 | htab->stub_count[ppc_stub_global_entry - 1]) < 0) | |
14616 | *stats = NULL; | |
14617 | free (groupmsg); | |
14618 | } | |
d2a300cf AM |
14619 | } |
14620 | return TRUE; | |
5bd4f169 AM |
14621 | } |
14622 | ||
60124e18 AM |
14623 | /* What to do when ld finds relocations against symbols defined in |
14624 | discarded sections. */ | |
14625 | ||
14626 | static unsigned int | |
14627 | ppc64_elf_action_discarded (asection *sec) | |
14628 | { | |
14629 | if (strcmp (".opd", sec->name) == 0) | |
14630 | return 0; | |
14631 | ||
14632 | if (strcmp (".toc", sec->name) == 0) | |
14633 | return 0; | |
14634 | ||
bce50a28 JJ |
14635 | if (strcmp (".toc1", sec->name) == 0) |
14636 | return 0; | |
14637 | ||
60124e18 AM |
14638 | return _bfd_elf_default_action_discarded (sec); |
14639 | } | |
14640 | ||
e59a1001 AM |
14641 | /* These are the dynamic relocations supported by glibc. */ |
14642 | ||
14643 | static bfd_boolean | |
14644 | ppc64_glibc_dynamic_reloc (enum elf_ppc64_reloc_type r_type) | |
14645 | { | |
14646 | switch (r_type) | |
14647 | { | |
14648 | case R_PPC64_RELATIVE: | |
14649 | case R_PPC64_NONE: | |
14650 | case R_PPC64_ADDR64: | |
14651 | case R_PPC64_GLOB_DAT: | |
14652 | case R_PPC64_IRELATIVE: | |
14653 | case R_PPC64_JMP_IREL: | |
14654 | case R_PPC64_JMP_SLOT: | |
14655 | case R_PPC64_DTPMOD64: | |
14656 | case R_PPC64_DTPREL64: | |
14657 | case R_PPC64_TPREL64: | |
14658 | case R_PPC64_TPREL16_LO_DS: | |
14659 | case R_PPC64_TPREL16_DS: | |
14660 | case R_PPC64_TPREL16: | |
14661 | case R_PPC64_TPREL16_LO: | |
14662 | case R_PPC64_TPREL16_HI: | |
14663 | case R_PPC64_TPREL16_HIGH: | |
14664 | case R_PPC64_TPREL16_HA: | |
14665 | case R_PPC64_TPREL16_HIGHA: | |
14666 | case R_PPC64_TPREL16_HIGHER: | |
14667 | case R_PPC64_TPREL16_HIGHEST: | |
14668 | case R_PPC64_TPREL16_HIGHERA: | |
14669 | case R_PPC64_TPREL16_HIGHESTA: | |
14670 | case R_PPC64_ADDR16_LO_DS: | |
14671 | case R_PPC64_ADDR16_LO: | |
14672 | case R_PPC64_ADDR16_HI: | |
14673 | case R_PPC64_ADDR16_HIGH: | |
14674 | case R_PPC64_ADDR16_HA: | |
14675 | case R_PPC64_ADDR16_HIGHA: | |
14676 | case R_PPC64_REL30: | |
14677 | case R_PPC64_COPY: | |
14678 | case R_PPC64_UADDR64: | |
14679 | case R_PPC64_UADDR32: | |
14680 | case R_PPC64_ADDR32: | |
14681 | case R_PPC64_ADDR24: | |
14682 | case R_PPC64_ADDR16: | |
14683 | case R_PPC64_UADDR16: | |
14684 | case R_PPC64_ADDR16_DS: | |
14685 | case R_PPC64_ADDR16_HIGHER: | |
14686 | case R_PPC64_ADDR16_HIGHEST: | |
14687 | case R_PPC64_ADDR16_HIGHERA: | |
14688 | case R_PPC64_ADDR16_HIGHESTA: | |
14689 | case R_PPC64_ADDR14: | |
14690 | case R_PPC64_ADDR14_BRTAKEN: | |
14691 | case R_PPC64_ADDR14_BRNTAKEN: | |
14692 | case R_PPC64_REL32: | |
14693 | case R_PPC64_REL64: | |
14694 | return TRUE; | |
14695 | ||
14696 | default: | |
14697 | return FALSE; | |
14698 | } | |
14699 | } | |
14700 | ||
5bd4f169 AM |
14701 | /* The RELOCATE_SECTION function is called by the ELF backend linker |
14702 | to handle the relocations for a section. | |
14703 | ||
14704 | The relocs are always passed as Rela structures; if the section | |
14705 | actually uses Rel structures, the r_addend field will always be | |
14706 | zero. | |
14707 | ||
14708 | This function is responsible for adjust the section contents as | |
14709 | necessary, and (if using Rela relocs and generating a | |
1049f94e | 14710 | relocatable output file) adjusting the reloc addend as |
5bd4f169 AM |
14711 | necessary. |
14712 | ||
14713 | This function does not have to worry about setting the reloc | |
14714 | address or the reloc symbol index. | |
14715 | ||
14716 | LOCAL_SYMS is a pointer to the swapped in local symbols. | |
14717 | ||
14718 | LOCAL_SECTIONS is an array giving the section in the input file | |
14719 | corresponding to the st_shndx field of each local symbol. | |
14720 | ||
14721 | The global hash table entry for the global symbols can be found | |
14722 | via elf_sym_hashes (input_bfd). | |
14723 | ||
1049f94e | 14724 | When generating relocatable output, this function must handle |
5bd4f169 AM |
14725 | STB_LOCAL/STT_SECTION symbols specially. The output symbol is |
14726 | going to be the section symbol corresponding to the output | |
14727 | section, which means that the addend must be adjusted | |
14728 | accordingly. */ | |
14729 | ||
b34976b6 | 14730 | static bfd_boolean |
4ce794b7 AM |
14731 | ppc64_elf_relocate_section (bfd *output_bfd, |
14732 | struct bfd_link_info *info, | |
14733 | bfd *input_bfd, | |
14734 | asection *input_section, | |
14735 | bfd_byte *contents, | |
14736 | Elf_Internal_Rela *relocs, | |
14737 | Elf_Internal_Sym *local_syms, | |
14738 | asection **local_sections) | |
5bd4f169 | 14739 | { |
65f38f15 | 14740 | struct ppc_link_hash_table *htab; |
5bd4f169 AM |
14741 | Elf_Internal_Shdr *symtab_hdr; |
14742 | struct elf_link_hash_entry **sym_hashes; | |
5bd4f169 | 14743 | Elf_Internal_Rela *rel; |
c316a17c | 14744 | Elf_Internal_Rela *wrel; |
5bd4f169 | 14745 | Elf_Internal_Rela *relend; |
411e1bfb AM |
14746 | Elf_Internal_Rela outrel; |
14747 | bfd_byte *loc; | |
411e1bfb | 14748 | struct got_entry **local_got_ents; |
5bd4f169 | 14749 | bfd_vma TOCstart; |
b34976b6 AM |
14750 | bfd_boolean ret = TRUE; |
14751 | bfd_boolean is_opd; | |
794e51c0 AM |
14752 | /* Assume 'at' branch hints. */ |
14753 | bfd_boolean is_isa_v2 = TRUE; | |
e59a1001 | 14754 | bfd_boolean warned_dynamic = FALSE; |
95f0d0d2 | 14755 | bfd_vma d_offset = (bfd_big_endian (input_bfd) ? 2 : 0); |
5bd4f169 | 14756 | |
65f38f15 | 14757 | /* Initialize howto table if needed. */ |
5bd4f169 | 14758 | if (!ppc64_elf_howto_table[R_PPC64_ADDR32]) |
5bd4f169 AM |
14759 | ppc_howto_init (); |
14760 | ||
65f38f15 | 14761 | htab = ppc_hash_table (info); |
4dfe6ac6 NC |
14762 | if (htab == NULL) |
14763 | return FALSE; | |
ee75fd95 AM |
14764 | |
14765 | /* Don't relocate stub sections. */ | |
e7d1c40c | 14766 | if (input_section->owner == htab->params->stub_bfd) |
ee75fd95 AM |
14767 | return TRUE; |
14768 | ||
7af5d5c4 AM |
14769 | if (!is_ppc64_elf (input_bfd)) |
14770 | { | |
14771 | bfd_set_error (bfd_error_wrong_format); | |
14772 | return FALSE; | |
14773 | } | |
0ffa91dd | 14774 | |
411e1bfb | 14775 | local_got_ents = elf_local_got_ents (input_bfd); |
5bd4f169 | 14776 | TOCstart = elf_gp (output_bfd); |
0ffa91dd | 14777 | symtab_hdr = &elf_symtab_hdr (input_bfd); |
5bd4f169 | 14778 | sym_hashes = elf_sym_hashes (input_bfd); |
7c8fe5c4 | 14779 | is_opd = ppc64_elf_section_data (input_section)->sec_type == sec_opd; |
65f38f15 | 14780 | |
c316a17c | 14781 | rel = wrel = relocs; |
5bd4f169 | 14782 | relend = relocs + input_section->reloc_count; |
c316a17c | 14783 | for (; rel < relend; wrel++, rel++) |
5bd4f169 | 14784 | { |
04c9666a | 14785 | enum elf_ppc64_reloc_type r_type; |
31c76678 | 14786 | bfd_vma addend; |
5bd4f169 AM |
14787 | bfd_reloc_status_type r; |
14788 | Elf_Internal_Sym *sym; | |
14789 | asection *sec; | |
039b3fef AM |
14790 | struct elf_link_hash_entry *h_elf; |
14791 | struct ppc_link_hash_entry *h; | |
14792 | struct ppc_link_hash_entry *fdh; | |
5bd4f169 | 14793 | const char *sym_name; |
0d4792f7 | 14794 | unsigned long r_symndx, toc_symndx; |
3a71aa26 | 14795 | bfd_vma toc_addend; |
f961d9dd AM |
14796 | unsigned char tls_mask, tls_gd, tls_type; |
14797 | unsigned char sym_type; | |
5bd4f169 | 14798 | bfd_vma relocation; |
23cedd1d | 14799 | bfd_boolean unresolved_reloc, save_unresolved_reloc; |
b34976b6 | 14800 | bfd_boolean warned; |
bc30df16 | 14801 | enum { DEST_NORMAL, DEST_OPD, DEST_STUB } reloc_dest; |
67f0cbdb | 14802 | unsigned int insn; |
e11840f9 | 14803 | unsigned int mask; |
721956f4 AM |
14804 | struct ppc_stub_hash_entry *stub_entry; |
14805 | bfd_vma max_br_offset; | |
14806 | bfd_vma from; | |
c316a17c | 14807 | Elf_Internal_Rela orig_rel; |
b80eed39 AM |
14808 | reloc_howto_type *howto; |
14809 | struct reloc_howto_struct alt_howto; | |
4a421c53 AM |
14810 | uint64_t pinsn; |
14811 | bfd_vma offset; | |
5bd4f169 | 14812 | |
c316a17c AM |
14813 | again: |
14814 | orig_rel = *rel; | |
14815 | ||
4ce794b7 | 14816 | r_type = ELF64_R_TYPE (rel->r_info); |
5bd4f169 | 14817 | r_symndx = ELF64_R_SYM (rel->r_info); |
ee87f2da AM |
14818 | |
14819 | /* For old style R_PPC64_TOC relocs with a zero symbol, use the | |
14820 | symbol of the previous ADDR64 reloc. The symbol gives us the | |
14821 | proper TOC base to use. */ | |
14822 | if (rel->r_info == ELF64_R_INFO (0, R_PPC64_TOC) | |
c316a17c AM |
14823 | && wrel != relocs |
14824 | && ELF64_R_TYPE (wrel[-1].r_info) == R_PPC64_ADDR64 | |
ee87f2da | 14825 | && is_opd) |
c316a17c | 14826 | r_symndx = ELF64_R_SYM (wrel[-1].r_info); |
ee87f2da | 14827 | |
4ce794b7 AM |
14828 | sym = NULL; |
14829 | sec = NULL; | |
039b3fef | 14830 | h_elf = NULL; |
4ce794b7 | 14831 | sym_name = NULL; |
b34976b6 AM |
14832 | unresolved_reloc = FALSE; |
14833 | warned = FALSE; | |
65f38f15 | 14834 | |
0b13192e | 14835 | if (r_symndx < symtab_hdr->sh_info) |
5bd4f169 AM |
14836 | { |
14837 | /* It's a local symbol. */ | |
74f0fb50 | 14838 | struct _opd_sec_data *opd; |
4025353c | 14839 | |
5bd4f169 AM |
14840 | sym = local_syms + r_symndx; |
14841 | sec = local_sections[r_symndx]; | |
26c61ae5 | 14842 | sym_name = bfd_elf_sym_name (input_bfd, symtab_hdr, sym, sec); |
0d4792f7 | 14843 | sym_type = ELF64_ST_TYPE (sym->st_info); |
8517fae7 | 14844 | relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel); |
74f0fb50 AM |
14845 | opd = get_opd_info (sec); |
14846 | if (opd != NULL && opd->adjust != NULL) | |
1e2f5b6e | 14847 | { |
51aecdc5 AM |
14848 | long adjust = opd->adjust[OPD_NDX (sym->st_value |
14849 | + rel->r_addend)]; | |
4025353c AM |
14850 | if (adjust == -1) |
14851 | relocation = 0; | |
14852 | else | |
4cc603a5 AM |
14853 | { |
14854 | /* If this is a relocation against the opd section sym | |
14855 | and we have edited .opd, adjust the reloc addend so | |
14856 | that ld -r and ld --emit-relocs output is correct. | |
14857 | If it is a reloc against some other .opd symbol, | |
14858 | then the symbol value will be adjusted later. */ | |
14859 | if (ELF_ST_TYPE (sym->st_info) == STT_SECTION) | |
14860 | rel->r_addend += adjust; | |
14861 | else | |
14862 | relocation += adjust; | |
14863 | } | |
1e2f5b6e | 14864 | } |
5bd4f169 AM |
14865 | } |
14866 | else | |
14867 | { | |
62d887d4 L |
14868 | bfd_boolean ignored; |
14869 | ||
b2a8e766 AM |
14870 | RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel, |
14871 | r_symndx, symtab_hdr, sym_hashes, | |
039b3fef | 14872 | h_elf, sec, relocation, |
62d887d4 | 14873 | unresolved_reloc, warned, ignored); |
039b3fef AM |
14874 | sym_name = h_elf->root.root.string; |
14875 | sym_type = h_elf->type; | |
b69fdb4e AM |
14876 | if (sec != NULL |
14877 | && sec->owner == output_bfd | |
14878 | && strcmp (sec->name, ".opd") == 0) | |
14879 | { | |
14880 | /* This is a symbol defined in a linker script. All | |
14881 | such are defined in output sections, even those | |
14882 | defined by simple assignment from a symbol defined in | |
14883 | an input section. Transfer the symbol to an | |
14884 | appropriate input .opd section, so that a branch to | |
14885 | this symbol will be mapped to the location specified | |
14886 | by the opd entry. */ | |
14887 | struct bfd_link_order *lo; | |
14888 | for (lo = sec->map_head.link_order; lo != NULL; lo = lo->next) | |
14889 | if (lo->type == bfd_indirect_link_order) | |
14890 | { | |
14891 | asection *isec = lo->u.indirect.section; | |
14892 | if (h_elf->root.u.def.value >= isec->output_offset | |
14893 | && h_elf->root.u.def.value < (isec->output_offset | |
14894 | + isec->size)) | |
14895 | { | |
14896 | h_elf->root.u.def.value -= isec->output_offset; | |
14897 | h_elf->root.u.def.section = isec; | |
14898 | sec = isec; | |
14899 | break; | |
14900 | } | |
14901 | } | |
14902 | } | |
5bd4f169 | 14903 | } |
ed7007c1 | 14904 | h = ppc_elf_hash_entry (h_elf); |
5bd4f169 | 14905 | |
dbaa2011 | 14906 | if (sec != NULL && discarded_section (sec)) |
c316a17c AM |
14907 | { |
14908 | _bfd_clear_contents (ppc64_elf_howto_table[r_type], | |
14909 | input_bfd, input_section, | |
0930cb30 | 14910 | contents, rel->r_offset); |
c316a17c AM |
14911 | wrel->r_offset = rel->r_offset; |
14912 | wrel->r_info = 0; | |
14913 | wrel->r_addend = 0; | |
14914 | ||
14915 | /* For ld -r, remove relocations in debug sections against | |
dcd2b8a0 | 14916 | symbols defined in discarded sections. Not done for |
c316a17c AM |
14917 | non-debug to preserve relocs in .eh_frame which the |
14918 | eh_frame editing code expects to be present. */ | |
14919 | if (bfd_link_relocatable (info) | |
14920 | && (input_section->flags & SEC_DEBUGGING)) | |
14921 | wrel--; | |
14922 | ||
14923 | continue; | |
14924 | } | |
ab96bf03 | 14925 | |
0e1862bb | 14926 | if (bfd_link_relocatable (info)) |
c316a17c | 14927 | goto copy_reloc; |
ab96bf03 | 14928 | |
f40da81b AM |
14929 | if (h != NULL && &h->elf == htab->elf.hgot) |
14930 | { | |
6f20ed8a | 14931 | relocation = TOCstart + htab->sec_info[input_section->id].toc_off; |
f40da81b AM |
14932 | sec = bfd_abs_section_ptr; |
14933 | unresolved_reloc = FALSE; | |
14934 | } | |
14935 | ||
951fd09b AM |
14936 | /* TLS optimizations. Replace instruction sequences and relocs |
14937 | based on information we collected in tls_optimize. We edit | |
14938 | RELOCS so that --emit-relocs will output something sensible | |
14939 | for the final instruction stream. */ | |
14940 | tls_mask = 0; | |
14941 | tls_gd = 0; | |
0d4792f7 | 14942 | toc_symndx = 0; |
727fc41e AM |
14943 | if (h != NULL) |
14944 | tls_mask = h->tls_mask; | |
14945 | else if (local_got_ents != NULL) | |
411e1bfb | 14946 | { |
e054468f AM |
14947 | struct plt_entry **local_plt = (struct plt_entry **) |
14948 | (local_got_ents + symtab_hdr->sh_info); | |
f961d9dd | 14949 | unsigned char *lgot_masks = (unsigned char *) |
e054468f | 14950 | (local_plt + symtab_hdr->sh_info); |
727fc41e AM |
14951 | tls_mask = lgot_masks[r_symndx]; |
14952 | } | |
37da22e5 | 14953 | if (((tls_mask & TLS_TLS) == 0 || tls_mask == (TLS_TLS | TLS_MARK)) |
727fc41e AM |
14954 | && (r_type == R_PPC64_TLS |
14955 | || r_type == R_PPC64_TLSGD | |
14956 | || r_type == R_PPC64_TLSLD)) | |
14957 | { | |
14958 | /* Check for toc tls entries. */ | |
f961d9dd | 14959 | unsigned char *toc_tls; |
0d4792f7 | 14960 | |
727fc41e AM |
14961 | if (!get_tls_mask (&toc_tls, &toc_symndx, &toc_addend, |
14962 | &local_syms, rel, input_bfd)) | |
14963 | return FALSE; | |
0d4792f7 | 14964 | |
727fc41e AM |
14965 | if (toc_tls) |
14966 | tls_mask = *toc_tls; | |
0d4792f7 AM |
14967 | } |
14968 | ||
14969 | /* Check that tls relocs are used with tls syms, and non-tls | |
14970 | relocs are used with non-tls syms. */ | |
cf35638d | 14971 | if (r_symndx != STN_UNDEF |
0d4792f7 AM |
14972 | && r_type != R_PPC64_NONE |
14973 | && (h == NULL | |
039b3fef AM |
14974 | || h->elf.root.type == bfd_link_hash_defined |
14975 | || h->elf.root.type == bfd_link_hash_defweak) | |
71c4e95a | 14976 | && IS_PPC64_TLS_RELOC (r_type) != (sym_type == STT_TLS)) |
0d4792f7 | 14977 | { |
37da22e5 | 14978 | if ((tls_mask & TLS_TLS) != 0 |
727fc41e AM |
14979 | && (r_type == R_PPC64_TLS |
14980 | || r_type == R_PPC64_TLSGD | |
14981 | || r_type == R_PPC64_TLSLD)) | |
0d4792f7 AM |
14982 | /* R_PPC64_TLS is OK against a symbol in the TOC. */ |
14983 | ; | |
14984 | else | |
25f53a85 | 14985 | info->callbacks->einfo |
1d483afe | 14986 | (!IS_PPC64_TLS_RELOC (r_type) |
695344c0 | 14987 | /* xgettext:c-format */ |
c1c8c1ef | 14988 | ? _("%H: %s used with TLS symbol `%pT'\n") |
695344c0 | 14989 | /* xgettext:c-format */ |
c1c8c1ef | 14990 | : _("%H: %s used with non-TLS symbol `%pT'\n"), |
25f53a85 | 14991 | input_bfd, input_section, rel->r_offset, |
0d4792f7 AM |
14992 | ppc64_elf_howto_table[r_type]->name, |
14993 | sym_name); | |
411e1bfb AM |
14994 | } |
14995 | ||
14996 | /* Ensure reloc mapping code below stays sane. */ | |
14997 | if (R_PPC64_TOC16_LO_DS != R_PPC64_TOC16_DS + 1 | |
14998 | || R_PPC64_TOC16_LO != R_PPC64_TOC16 + 1 | |
14999 | || (R_PPC64_GOT_TLSLD16 & 3) != (R_PPC64_GOT_TLSGD16 & 3) | |
15000 | || (R_PPC64_GOT_TLSLD16_LO & 3) != (R_PPC64_GOT_TLSGD16_LO & 3) | |
15001 | || (R_PPC64_GOT_TLSLD16_HI & 3) != (R_PPC64_GOT_TLSGD16_HI & 3) | |
15002 | || (R_PPC64_GOT_TLSLD16_HA & 3) != (R_PPC64_GOT_TLSGD16_HA & 3) | |
15003 | || (R_PPC64_GOT_TLSLD16 & 3) != (R_PPC64_GOT_TPREL16_DS & 3) | |
15004 | || (R_PPC64_GOT_TLSLD16_LO & 3) != (R_PPC64_GOT_TPREL16_LO_DS & 3) | |
15005 | || (R_PPC64_GOT_TLSLD16_HI & 3) != (R_PPC64_GOT_TPREL16_HI & 3) | |
15006 | || (R_PPC64_GOT_TLSLD16_HA & 3) != (R_PPC64_GOT_TPREL16_HA & 3)) | |
15007 | abort (); | |
0d4792f7 | 15008 | |
411e1bfb AM |
15009 | switch (r_type) |
15010 | { | |
15011 | default: | |
411e1bfb AM |
15012 | break; |
15013 | ||
ba761f19 | 15014 | case R_PPC64_LO_DS_OPT: |
95f0d0d2 | 15015 | insn = bfd_get_32 (input_bfd, contents + rel->r_offset - d_offset); |
2365f8d7 | 15016 | if ((insn & (0x3fu << 26)) != 58u << 26) |
ba761f19 AM |
15017 | abort (); |
15018 | insn += (14u << 26) - (58u << 26); | |
95f0d0d2 | 15019 | bfd_put_32 (input_bfd, insn, contents + rel->r_offset - d_offset); |
ba761f19 AM |
15020 | r_type = R_PPC64_TOC16_LO; |
15021 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
15022 | break; | |
15023 | ||
411e1bfb AM |
15024 | case R_PPC64_TOC16: |
15025 | case R_PPC64_TOC16_LO: | |
15026 | case R_PPC64_TOC16_DS: | |
15027 | case R_PPC64_TOC16_LO_DS: | |
411e1bfb AM |
15028 | { |
15029 | /* Check for toc tls entries. */ | |
f961d9dd | 15030 | unsigned char *toc_tls; |
951fd09b | 15031 | int retval; |
411e1bfb | 15032 | |
3a71aa26 AM |
15033 | retval = get_tls_mask (&toc_tls, &toc_symndx, &toc_addend, |
15034 | &local_syms, rel, input_bfd); | |
951fd09b | 15035 | if (retval == 0) |
411e1bfb AM |
15036 | return FALSE; |
15037 | ||
15038 | if (toc_tls) | |
15039 | { | |
951fd09b | 15040 | tls_mask = *toc_tls; |
411e1bfb AM |
15041 | if (r_type == R_PPC64_TOC16_DS |
15042 | || r_type == R_PPC64_TOC16_LO_DS) | |
81407a69 | 15043 | { |
37da22e5 | 15044 | if ((tls_mask & TLS_TLS) != 0 |
81407a69 AM |
15045 | && (tls_mask & (TLS_DTPREL | TLS_TPREL)) == 0) |
15046 | goto toctprel; | |
15047 | } | |
411e1bfb | 15048 | else |
951fd09b AM |
15049 | { |
15050 | /* If we found a GD reloc pair, then we might be | |
15051 | doing a GD->IE transition. */ | |
15052 | if (retval == 2) | |
15053 | { | |
b00a0a86 | 15054 | tls_gd = TLS_GDIE; |
37da22e5 AM |
15055 | if ((tls_mask & TLS_TLS) != 0 |
15056 | && (tls_mask & TLS_GD) == 0) | |
102890f0 | 15057 | goto tls_ldgd_opt; |
951fd09b AM |
15058 | } |
15059 | else if (retval == 3) | |
15060 | { | |
37da22e5 AM |
15061 | if ((tls_mask & TLS_TLS) != 0 |
15062 | && (tls_mask & TLS_LD) == 0) | |
102890f0 | 15063 | goto tls_ldgd_opt; |
951fd09b AM |
15064 | } |
15065 | } | |
411e1bfb AM |
15066 | } |
15067 | } | |
15068 | break; | |
15069 | ||
9d6ded02 AM |
15070 | case R_PPC64_GOT_TPREL16_HI: |
15071 | case R_PPC64_GOT_TPREL16_HA: | |
37da22e5 | 15072 | if ((tls_mask & TLS_TLS) != 0 |
9d6ded02 AM |
15073 | && (tls_mask & TLS_TPREL) == 0) |
15074 | { | |
15075 | rel->r_offset -= d_offset; | |
95f0d0d2 | 15076 | bfd_put_32 (input_bfd, NOP, contents + rel->r_offset); |
9d6ded02 AM |
15077 | r_type = R_PPC64_NONE; |
15078 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
15079 | } | |
15080 | break; | |
15081 | ||
411e1bfb AM |
15082 | case R_PPC64_GOT_TPREL16_DS: |
15083 | case R_PPC64_GOT_TPREL16_LO_DS: | |
37da22e5 | 15084 | if ((tls_mask & TLS_TLS) != 0 |
951fd09b | 15085 | && (tls_mask & TLS_TPREL) == 0) |
411e1bfb | 15086 | { |
81407a69 | 15087 | toctprel: |
95f0d0d2 | 15088 | insn = bfd_get_32 (input_bfd, |
c316a17c | 15089 | contents + rel->r_offset - d_offset); |
411e1bfb AM |
15090 | insn &= 31 << 21; |
15091 | insn |= 0x3c0d0000; /* addis 0,13,0 */ | |
95f0d0d2 | 15092 | bfd_put_32 (input_bfd, insn, |
c316a17c | 15093 | contents + rel->r_offset - d_offset); |
411e1bfb | 15094 | r_type = R_PPC64_TPREL16_HA; |
0d4792f7 AM |
15095 | if (toc_symndx != 0) |
15096 | { | |
15097 | rel->r_info = ELF64_R_INFO (toc_symndx, r_type); | |
3a71aa26 | 15098 | rel->r_addend = toc_addend; |
0d4792f7 AM |
15099 | /* We changed the symbol. Start over in order to |
15100 | get h, sym, sec etc. right. */ | |
c316a17c | 15101 | goto again; |
0d4792f7 AM |
15102 | } |
15103 | else | |
15104 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
411e1bfb AM |
15105 | } |
15106 | break; | |
15107 | ||
87c69f97 | 15108 | case R_PPC64_GOT_TPREL_PCREL34: |
c213164a AM |
15109 | if ((tls_mask & TLS_TLS) != 0 |
15110 | && (tls_mask & TLS_TPREL) == 0) | |
15111 | { | |
15112 | /* pld ra,sym@got@tprel@pcrel -> paddi ra,r13,sym@tprel */ | |
15113 | pinsn = bfd_get_32 (input_bfd, contents + rel->r_offset); | |
15114 | pinsn <<= 32; | |
15115 | pinsn |= bfd_get_32 (input_bfd, contents + rel->r_offset + 4); | |
15116 | pinsn += ((2ULL << 56) + (-1ULL << 52) | |
15117 | + (14ULL << 26) - (57ULL << 26) + (13ULL << 16)); | |
15118 | bfd_put_32 (input_bfd, pinsn >> 32, | |
15119 | contents + rel->r_offset); | |
15120 | bfd_put_32 (input_bfd, pinsn & 0xffffffff, | |
15121 | contents + rel->r_offset + 4); | |
15122 | r_type = R_PPC64_TPREL34; | |
15123 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
15124 | } | |
15125 | break; | |
15126 | ||
411e1bfb | 15127 | case R_PPC64_TLS: |
37da22e5 | 15128 | if ((tls_mask & TLS_TLS) != 0 |
951fd09b | 15129 | && (tls_mask & TLS_TPREL) == 0) |
411e1bfb | 15130 | { |
c213164a | 15131 | insn = bfd_get_32 (input_bfd, contents + (rel->r_offset & ~3)); |
2d0f3896 AM |
15132 | insn = _bfd_elf_ppc_at_tls_transform (insn, 13); |
15133 | if (insn == 0) | |
c213164a AM |
15134 | break; |
15135 | if ((rel->r_offset & 3) == 0) | |
0d4792f7 | 15136 | { |
c213164a AM |
15137 | bfd_put_32 (input_bfd, insn, contents + rel->r_offset); |
15138 | /* Was PPC64_TLS which sits on insn boundary, now | |
15139 | PPC64_TPREL16_LO which is at low-order half-word. */ | |
15140 | rel->r_offset += d_offset; | |
15141 | r_type = R_PPC64_TPREL16_LO; | |
15142 | if (toc_symndx != 0) | |
15143 | { | |
15144 | rel->r_info = ELF64_R_INFO (toc_symndx, r_type); | |
15145 | rel->r_addend = toc_addend; | |
15146 | /* We changed the symbol. Start over in order to | |
15147 | get h, sym, sec etc. right. */ | |
15148 | goto again; | |
15149 | } | |
15150 | else | |
15151 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
15152 | } | |
15153 | else if ((rel->r_offset & 3) == 1) | |
15154 | { | |
15155 | /* For pcrel IE to LE we already have the full | |
15156 | offset and thus don't need an addi here. A nop | |
15157 | or mr will do. */ | |
2365f8d7 | 15158 | if ((insn & (0x3fu << 26)) == 14 << 26) |
c213164a AM |
15159 | { |
15160 | /* Extract regs from addi rt,ra,si. */ | |
15161 | unsigned int rt = (insn >> 21) & 0x1f; | |
15162 | unsigned int ra = (insn >> 16) & 0x1f; | |
15163 | if (rt == ra) | |
15164 | insn = NOP; | |
15165 | else | |
15166 | { | |
15167 | /* Build or ra,rs,rb with rb==rs, ie. mr ra,rs. */ | |
15168 | insn = (rt << 16) | (ra << 21) | (ra << 11); | |
15169 | insn |= (31u << 26) | (444u << 1); | |
15170 | } | |
15171 | } | |
15172 | bfd_put_32 (input_bfd, insn, contents + rel->r_offset - 1); | |
0d4792f7 | 15173 | } |
411e1bfb AM |
15174 | } |
15175 | break; | |
15176 | ||
411e1bfb AM |
15177 | case R_PPC64_GOT_TLSGD16_HI: |
15178 | case R_PPC64_GOT_TLSGD16_HA: | |
b00a0a86 | 15179 | tls_gd = TLS_GDIE; |
37da22e5 | 15180 | if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_GD) == 0) |
951fd09b AM |
15181 | goto tls_gdld_hi; |
15182 | break; | |
15183 | ||
411e1bfb AM |
15184 | case R_PPC64_GOT_TLSLD16_HI: |
15185 | case R_PPC64_GOT_TLSLD16_HA: | |
37da22e5 | 15186 | if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_LD) == 0) |
411e1bfb | 15187 | { |
951fd09b AM |
15188 | tls_gdld_hi: |
15189 | if ((tls_mask & tls_gd) != 0) | |
15190 | r_type = (((r_type - (R_PPC64_GOT_TLSGD16 & 3)) & 3) | |
15191 | + R_PPC64_GOT_TPREL16_DS); | |
15192 | else | |
411e1bfb | 15193 | { |
4fe5ca5b | 15194 | rel->r_offset -= d_offset; |
95f0d0d2 | 15195 | bfd_put_32 (input_bfd, NOP, contents + rel->r_offset); |
951fd09b | 15196 | r_type = R_PPC64_NONE; |
411e1bfb | 15197 | } |
951fd09b | 15198 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); |
411e1bfb AM |
15199 | } |
15200 | break; | |
15201 | ||
951fd09b AM |
15202 | case R_PPC64_GOT_TLSGD16: |
15203 | case R_PPC64_GOT_TLSGD16_LO: | |
b00a0a86 | 15204 | tls_gd = TLS_GDIE; |
37da22e5 | 15205 | if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_GD) == 0) |
102890f0 | 15206 | goto tls_ldgd_opt; |
951fd09b | 15207 | break; |
411e1bfb | 15208 | |
951fd09b AM |
15209 | case R_PPC64_GOT_TLSLD16: |
15210 | case R_PPC64_GOT_TLSLD16_LO: | |
37da22e5 | 15211 | if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_LD) == 0) |
951fd09b | 15212 | { |
b9f04fe0 | 15213 | unsigned int insn1, insn2; |
102890f0 AM |
15214 | |
15215 | tls_ldgd_opt: | |
727fc41e AM |
15216 | offset = (bfd_vma) -1; |
15217 | /* If not using the newer R_PPC64_TLSGD/LD to mark | |
15218 | __tls_get_addr calls, we must trust that the call | |
15219 | stays with its arg setup insns, ie. that the next | |
15220 | reloc is the __tls_get_addr call associated with | |
15221 | the current reloc. Edit both insns. */ | |
9737e8af | 15222 | if (input_section->nomark_tls_get_addr |
727fc41e AM |
15223 | && rel + 1 < relend |
15224 | && branch_reloc_hash_match (input_bfd, rel + 1, | |
9e7028aa AM |
15225 | htab->tls_get_addr_fd, |
15226 | htab->tga_desc_fd, | |
727fc41e | 15227 | htab->tls_get_addr, |
9e7028aa | 15228 | htab->tga_desc)) |
727fc41e | 15229 | offset = rel[1].r_offset; |
b86ac8e3 AM |
15230 | /* We read the low GOT_TLS (or TOC16) insn because we |
15231 | need to keep the destination reg. It may be | |
15232 | something other than the usual r3, and moved to r3 | |
15233 | before the call by intervening code. */ | |
95f0d0d2 | 15234 | insn1 = bfd_get_32 (input_bfd, |
b86ac8e3 | 15235 | contents + rel->r_offset - d_offset); |
102890f0 | 15236 | if ((tls_mask & tls_gd) != 0) |
411e1bfb | 15237 | { |
102890f0 | 15238 | /* IE */ |
b86ac8e3 | 15239 | insn1 &= (0x1f << 21) | (0x1f << 16); |
2365f8d7 | 15240 | insn1 |= 58u << 26; /* ld */ |
102890f0 | 15241 | insn2 = 0x7c636a14; /* add 3,3,13 */ |
727fc41e | 15242 | if (offset != (bfd_vma) -1) |
f58d5a2d | 15243 | rel[1].r_info = ELF64_R_INFO (STN_UNDEF, R_PPC64_NONE); |
46e9995a AM |
15244 | if (r_type == R_PPC64_TOC16 |
15245 | || r_type == R_PPC64_TOC16_LO) | |
102890f0 | 15246 | r_type += R_PPC64_TOC16_DS - R_PPC64_TOC16; |
46e9995a AM |
15247 | else |
15248 | r_type = (((r_type - (R_PPC64_GOT_TLSGD16 & 1)) & 1) | |
15249 | + R_PPC64_GOT_TPREL16_DS); | |
102890f0 AM |
15250 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); |
15251 | } | |
15252 | else | |
15253 | { | |
15254 | /* LE */ | |
b86ac8e3 AM |
15255 | insn1 &= 0x1f << 21; |
15256 | insn1 |= 0x3c0d0000; /* addis r,13,0 */ | |
102890f0 AM |
15257 | insn2 = 0x38630000; /* addi 3,3,0 */ |
15258 | if (tls_gd == 0) | |
951fd09b | 15259 | { |
102890f0 | 15260 | /* Was an LD reloc. */ |
71c4e95a | 15261 | r_symndx = STN_UNDEF; |
102890f0 | 15262 | rel->r_addend = htab->elf.tls_sec->vma + DTP_OFFSET; |
951fd09b | 15263 | } |
102890f0 | 15264 | else if (toc_symndx != 0) |
3a71aa26 AM |
15265 | { |
15266 | r_symndx = toc_symndx; | |
15267 | rel->r_addend = toc_addend; | |
15268 | } | |
102890f0 AM |
15269 | r_type = R_PPC64_TPREL16_HA; |
15270 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
727fc41e AM |
15271 | if (offset != (bfd_vma) -1) |
15272 | { | |
15273 | rel[1].r_info = ELF64_R_INFO (r_symndx, | |
15274 | R_PPC64_TPREL16_LO); | |
15275 | rel[1].r_offset = offset + d_offset; | |
15276 | rel[1].r_addend = rel->r_addend; | |
15277 | } | |
102890f0 | 15278 | } |
95f0d0d2 | 15279 | bfd_put_32 (input_bfd, insn1, |
3a71aa26 | 15280 | contents + rel->r_offset - d_offset); |
727fc41e | 15281 | if (offset != (bfd_vma) -1) |
c96e0573 AM |
15282 | { |
15283 | bfd_put_32 (input_bfd, insn2, contents + offset); | |
15284 | if (offset + 8 <= input_section->size) | |
15285 | { | |
15286 | insn2 = bfd_get_32 (input_bfd, contents + offset + 4); | |
15287 | if (insn2 == LD_R2_0R1 + STK_TOC (htab)) | |
15288 | bfd_put_32 (input_bfd, NOP, contents + offset + 4); | |
15289 | } | |
15290 | } | |
727fc41e AM |
15291 | if ((tls_mask & tls_gd) == 0 |
15292 | && (tls_gd == 0 || toc_symndx != 0)) | |
15293 | { | |
15294 | /* We changed the symbol. Start over in order | |
15295 | to get h, sym, sec etc. right. */ | |
c316a17c | 15296 | goto again; |
727fc41e AM |
15297 | } |
15298 | } | |
15299 | break; | |
15300 | ||
87c69f97 | 15301 | case R_PPC64_GOT_TLSGD_PCREL34: |
c213164a AM |
15302 | if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_GD) == 0) |
15303 | { | |
15304 | pinsn = bfd_get_32 (input_bfd, contents + rel->r_offset); | |
15305 | pinsn <<= 32; | |
15306 | pinsn |= bfd_get_32 (input_bfd, contents + rel->r_offset + 4); | |
15307 | if ((tls_mask & TLS_GDIE) != 0) | |
15308 | { | |
15309 | /* IE, pla -> pld */ | |
15310 | pinsn += (-2ULL << 56) + (57ULL << 26) - (14ULL << 26); | |
87c69f97 | 15311 | r_type = R_PPC64_GOT_TPREL_PCREL34; |
c213164a AM |
15312 | } |
15313 | else | |
15314 | { | |
15315 | /* LE, pla pcrel -> paddi r13 */ | |
15316 | pinsn += (-1ULL << 52) + (13ULL << 16); | |
15317 | r_type = R_PPC64_TPREL34; | |
15318 | } | |
15319 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
15320 | bfd_put_32 (input_bfd, pinsn >> 32, | |
15321 | contents + rel->r_offset); | |
15322 | bfd_put_32 (input_bfd, pinsn & 0xffffffff, | |
15323 | contents + rel->r_offset + 4); | |
15324 | } | |
15325 | break; | |
15326 | ||
87c69f97 | 15327 | case R_PPC64_GOT_TLSLD_PCREL34: |
c213164a AM |
15328 | if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_LD) == 0) |
15329 | { | |
15330 | pinsn = bfd_get_32 (input_bfd, contents + rel->r_offset); | |
15331 | pinsn <<= 32; | |
15332 | pinsn |= bfd_get_32 (input_bfd, contents + rel->r_offset + 4); | |
15333 | pinsn += (-1ULL << 52) + (13ULL << 16); | |
15334 | bfd_put_32 (input_bfd, pinsn >> 32, | |
15335 | contents + rel->r_offset); | |
15336 | bfd_put_32 (input_bfd, pinsn & 0xffffffff, | |
15337 | contents + rel->r_offset + 4); | |
15338 | rel->r_addend = htab->elf.tls_sec->vma + DTP_OFFSET; | |
15339 | r_symndx = STN_UNDEF; | |
15340 | r_type = R_PPC64_TPREL34; | |
15341 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
15342 | goto again; | |
15343 | } | |
15344 | break; | |
15345 | ||
727fc41e | 15346 | case R_PPC64_TLSGD: |
37da22e5 | 15347 | if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_GD) == 0 |
675e2809 | 15348 | && rel + 1 < relend) |
727fc41e | 15349 | { |
b9f04fe0 | 15350 | unsigned int insn2; |
5663e321 | 15351 | enum elf_ppc64_reloc_type r_type1 = ELF64_R_TYPE (rel[1].r_info); |
727fc41e | 15352 | |
4a421c53 | 15353 | offset = rel->r_offset; |
5663e321 | 15354 | if (is_plt_seq_reloc (r_type1)) |
23cedd1d AM |
15355 | { |
15356 | bfd_put_32 (output_bfd, NOP, contents + offset); | |
5663e321 AM |
15357 | if (r_type1 == R_PPC64_PLT_PCREL34 |
15358 | || r_type1 == R_PPC64_PLT_PCREL34_NOTOC) | |
15359 | bfd_put_32 (output_bfd, NOP, contents + offset + 4); | |
23cedd1d AM |
15360 | rel[1].r_info = ELF64_R_INFO (STN_UNDEF, R_PPC64_NONE); |
15361 | break; | |
15362 | } | |
15363 | ||
15364 | if (ELF64_R_TYPE (rel[1].r_info) == R_PPC64_PLTCALL) | |
15365 | bfd_put_32 (output_bfd, NOP, contents + offset + 4); | |
15366 | ||
b00a0a86 | 15367 | if ((tls_mask & TLS_GDIE) != 0) |
727fc41e AM |
15368 | { |
15369 | /* IE */ | |
15370 | r_type = R_PPC64_NONE; | |
15371 | insn2 = 0x7c636a14; /* add 3,3,13 */ | |
15372 | } | |
15373 | else | |
15374 | { | |
15375 | /* LE */ | |
15376 | if (toc_symndx != 0) | |
15377 | { | |
15378 | r_symndx = toc_symndx; | |
15379 | rel->r_addend = toc_addend; | |
15380 | } | |
c213164a AM |
15381 | if (r_type1 == R_PPC64_REL24_NOTOC |
15382 | || r_type1 == R_PPC64_PLTCALL_NOTOC) | |
15383 | { | |
15384 | r_type = R_PPC64_NONE; | |
15385 | insn2 = NOP; | |
15386 | } | |
15387 | else | |
15388 | { | |
15389 | rel->r_offset = offset + d_offset; | |
15390 | r_type = R_PPC64_TPREL16_LO; | |
15391 | insn2 = 0x38630000; /* addi 3,3,0 */ | |
15392 | } | |
727fc41e AM |
15393 | } |
15394 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
15395 | /* Zap the reloc on the _tls_get_addr call too. */ | |
15396 | BFD_ASSERT (offset == rel[1].r_offset); | |
f58d5a2d | 15397 | rel[1].r_info = ELF64_R_INFO (STN_UNDEF, R_PPC64_NONE); |
95f0d0d2 | 15398 | bfd_put_32 (input_bfd, insn2, contents + offset); |
c213164a AM |
15399 | if ((tls_mask & TLS_GDIE) == 0 |
15400 | && toc_symndx != 0 | |
15401 | && r_type != R_PPC64_NONE) | |
c316a17c | 15402 | goto again; |
411e1bfb | 15403 | } |
411e1bfb AM |
15404 | break; |
15405 | ||
727fc41e | 15406 | case R_PPC64_TLSLD: |
37da22e5 | 15407 | if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_LD) == 0 |
675e2809 | 15408 | && rel + 1 < relend) |
727fc41e | 15409 | { |
b9f04fe0 | 15410 | unsigned int insn2; |
5663e321 | 15411 | enum elf_ppc64_reloc_type r_type1 = ELF64_R_TYPE (rel[1].r_info); |
727fc41e | 15412 | |
4a421c53 | 15413 | offset = rel->r_offset; |
5663e321 | 15414 | if (is_plt_seq_reloc (r_type1)) |
23cedd1d AM |
15415 | { |
15416 | bfd_put_32 (output_bfd, NOP, contents + offset); | |
5663e321 AM |
15417 | if (r_type1 == R_PPC64_PLT_PCREL34 |
15418 | || r_type1 == R_PPC64_PLT_PCREL34_NOTOC) | |
15419 | bfd_put_32 (output_bfd, NOP, contents + offset + 4); | |
23cedd1d AM |
15420 | rel[1].r_info = ELF64_R_INFO (STN_UNDEF, R_PPC64_NONE); |
15421 | break; | |
15422 | } | |
15423 | ||
15424 | if (ELF64_R_TYPE (rel[1].r_info) == R_PPC64_PLTCALL) | |
15425 | bfd_put_32 (output_bfd, NOP, contents + offset + 4); | |
15426 | ||
c213164a AM |
15427 | if (r_type1 == R_PPC64_REL24_NOTOC |
15428 | || r_type1 == R_PPC64_PLTCALL_NOTOC) | |
15429 | { | |
15430 | r_type = R_PPC64_NONE; | |
15431 | insn2 = NOP; | |
15432 | } | |
15433 | else | |
15434 | { | |
15435 | rel->r_offset = offset + d_offset; | |
15436 | r_symndx = STN_UNDEF; | |
15437 | r_type = R_PPC64_TPREL16_LO; | |
15438 | rel->r_addend = htab->elf.tls_sec->vma + DTP_OFFSET; | |
15439 | insn2 = 0x38630000; /* addi 3,3,0 */ | |
15440 | } | |
727fc41e | 15441 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); |
727fc41e AM |
15442 | /* Zap the reloc on the _tls_get_addr call too. */ |
15443 | BFD_ASSERT (offset == rel[1].r_offset); | |
f58d5a2d | 15444 | rel[1].r_info = ELF64_R_INFO (STN_UNDEF, R_PPC64_NONE); |
95f0d0d2 | 15445 | bfd_put_32 (input_bfd, insn2, contents + offset); |
c213164a AM |
15446 | if (r_type != R_PPC64_NONE) |
15447 | goto again; | |
727fc41e AM |
15448 | } |
15449 | break; | |
15450 | ||
411e1bfb | 15451 | case R_PPC64_DTPMOD64: |
951fd09b AM |
15452 | if (rel + 1 < relend |
15453 | && rel[1].r_info == ELF64_R_INFO (r_symndx, R_PPC64_DTPREL64) | |
15454 | && rel[1].r_offset == rel->r_offset + 8) | |
411e1bfb | 15455 | { |
951fd09b AM |
15456 | if ((tls_mask & TLS_GD) == 0) |
15457 | { | |
15458 | rel[1].r_info = ELF64_R_INFO (r_symndx, R_PPC64_NONE); | |
b00a0a86 | 15459 | if ((tls_mask & TLS_GDIE) != 0) |
951fd09b AM |
15460 | r_type = R_PPC64_TPREL64; |
15461 | else | |
15462 | { | |
4ce794b7 | 15463 | bfd_put_64 (output_bfd, 1, contents + rel->r_offset); |
951fd09b AM |
15464 | r_type = R_PPC64_NONE; |
15465 | } | |
15466 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
15467 | } | |
15468 | } | |
15469 | else | |
15470 | { | |
15471 | if ((tls_mask & TLS_LD) == 0) | |
411e1bfb | 15472 | { |
4ce794b7 | 15473 | bfd_put_64 (output_bfd, 1, contents + rel->r_offset); |
411e1bfb | 15474 | r_type = R_PPC64_NONE; |
951fd09b | 15475 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); |
411e1bfb | 15476 | } |
411e1bfb AM |
15477 | } |
15478 | break; | |
15479 | ||
15480 | case R_PPC64_TPREL64: | |
951fd09b | 15481 | if ((tls_mask & TLS_TPREL) == 0) |
411e1bfb AM |
15482 | { |
15483 | r_type = R_PPC64_NONE; | |
15484 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
15485 | } | |
15486 | break; | |
52a82034 | 15487 | |
006589cf AM |
15488 | case R_PPC64_ENTRY: |
15489 | relocation = TOCstart + htab->sec_info[input_section->id].toc_off; | |
15490 | if (!bfd_link_pic (info) | |
15491 | && !info->traditional_format | |
15492 | && relocation + 0x80008000 <= 0xffffffff) | |
15493 | { | |
15494 | unsigned int insn1, insn2; | |
15495 | ||
15496 | insn1 = bfd_get_32 (input_bfd, contents + rel->r_offset); | |
15497 | insn2 = bfd_get_32 (input_bfd, contents + rel->r_offset + 4); | |
15498 | if ((insn1 & ~0xfffc) == LD_R2_0R12 | |
15499 | && insn2 == ADD_R2_R2_R12) | |
15500 | { | |
95f0d0d2 | 15501 | bfd_put_32 (input_bfd, |
006589cf AM |
15502 | LIS_R2 + PPC_HA (relocation), |
15503 | contents + rel->r_offset); | |
95f0d0d2 | 15504 | bfd_put_32 (input_bfd, |
006589cf AM |
15505 | ADDI_R2_R2 + PPC_LO (relocation), |
15506 | contents + rel->r_offset + 4); | |
15507 | } | |
15508 | } | |
15509 | else | |
15510 | { | |
15511 | relocation -= (rel->r_offset | |
15512 | + input_section->output_offset | |
15513 | + input_section->output_section->vma); | |
15514 | if (relocation + 0x80008000 <= 0xffffffff) | |
15515 | { | |
15516 | unsigned int insn1, insn2; | |
15517 | ||
15518 | insn1 = bfd_get_32 (input_bfd, contents + rel->r_offset); | |
15519 | insn2 = bfd_get_32 (input_bfd, contents + rel->r_offset + 4); | |
15520 | if ((insn1 & ~0xfffc) == LD_R2_0R12 | |
15521 | && insn2 == ADD_R2_R2_R12) | |
15522 | { | |
95f0d0d2 | 15523 | bfd_put_32 (input_bfd, |
006589cf AM |
15524 | ADDIS_R2_R12 + PPC_HA (relocation), |
15525 | contents + rel->r_offset); | |
95f0d0d2 | 15526 | bfd_put_32 (input_bfd, |
006589cf AM |
15527 | ADDI_R2_R2 + PPC_LO (relocation), |
15528 | contents + rel->r_offset + 4); | |
15529 | } | |
15530 | } | |
15531 | } | |
15532 | break; | |
15533 | ||
52a82034 AM |
15534 | case R_PPC64_REL16_HA: |
15535 | /* If we are generating a non-PIC executable, edit | |
15536 | . 0: addis 2,12,.TOC.-0b@ha | |
15537 | . addi 2,2,.TOC.-0b@l | |
15538 | used by ELFv2 global entry points to set up r2, to | |
15539 | . lis 2,.TOC.@ha | |
15540 | . addi 2,2,.TOC.@l | |
15541 | if .TOC. is in range. */ | |
0e1862bb | 15542 | if (!bfd_link_pic (info) |
810d4e75 | 15543 | && !info->traditional_format |
006589cf | 15544 | && !htab->opd_abi |
4f038ee5 | 15545 | && rel->r_addend == d_offset |
52a82034 AM |
15546 | && h != NULL && &h->elf == htab->elf.hgot |
15547 | && rel + 1 < relend | |
15548 | && rel[1].r_info == ELF64_R_INFO (r_symndx, R_PPC64_REL16_LO) | |
15549 | && rel[1].r_offset == rel->r_offset + 4 | |
15550 | && rel[1].r_addend == rel->r_addend + 4 | |
15551 | && relocation + 0x80008000 <= 0xffffffff) | |
15552 | { | |
15553 | unsigned int insn1, insn2; | |
4a421c53 | 15554 | offset = rel->r_offset - d_offset; |
95f0d0d2 AM |
15555 | insn1 = bfd_get_32 (input_bfd, contents + offset); |
15556 | insn2 = bfd_get_32 (input_bfd, contents + offset + 4); | |
006589cf AM |
15557 | if ((insn1 & 0xffff0000) == ADDIS_R2_R12 |
15558 | && (insn2 & 0xffff0000) == ADDI_R2_R2) | |
52a82034 AM |
15559 | { |
15560 | r_type = R_PPC64_ADDR16_HA; | |
15561 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
15562 | rel->r_addend -= d_offset; | |
15563 | rel[1].r_info = ELF64_R_INFO (r_symndx, R_PPC64_ADDR16_LO); | |
15564 | rel[1].r_addend -= d_offset + 4; | |
95f0d0d2 | 15565 | bfd_put_32 (input_bfd, LIS_R2, contents + offset); |
52a82034 AM |
15566 | } |
15567 | } | |
15568 | break; | |
411e1bfb AM |
15569 | } |
15570 | ||
15571 | /* Handle other relocations that tweak non-addend part of insn. */ | |
86c76c7b | 15572 | insn = 0; |
b25116a9 AM |
15573 | max_br_offset = 1 << 25; |
15574 | addend = rel->r_addend; | |
bc30df16 | 15575 | reloc_dest = DEST_NORMAL; |
65f38f15 | 15576 | switch (r_type) |
5bd4f169 AM |
15577 | { |
15578 | default: | |
65f38f15 | 15579 | break; |
5bd4f169 | 15580 | |
3b421ab3 AM |
15581 | case R_PPC64_TOCSAVE: |
15582 | if (relocation + addend == (rel->r_offset | |
15583 | + input_section->output_offset | |
15584 | + input_section->output_section->vma) | |
15585 | && tocsave_find (htab, NO_INSERT, | |
15586 | &local_syms, rel, input_bfd)) | |
15587 | { | |
15588 | insn = bfd_get_32 (input_bfd, contents + rel->r_offset); | |
15589 | if (insn == NOP | |
15590 | || insn == CROR_151515 || insn == CROR_313131) | |
a078d95a AM |
15591 | bfd_put_32 (input_bfd, |
15592 | STD_R2_0R1 + STK_TOC (htab), | |
3b421ab3 AM |
15593 | contents + rel->r_offset); |
15594 | } | |
15595 | break; | |
15596 | ||
65f38f15 AM |
15597 | /* Branch taken prediction relocations. */ |
15598 | case R_PPC64_ADDR14_BRTAKEN: | |
15599 | case R_PPC64_REL14_BRTAKEN: | |
cedb70c5 | 15600 | insn = 0x01 << 21; /* 'y' or 't' bit, lowest bit of BO field. */ |
1a0670f3 | 15601 | /* Fall through. */ |
65f38f15 | 15602 | |
86c76c7b | 15603 | /* Branch not taken prediction relocations. */ |
65f38f15 AM |
15604 | case R_PPC64_ADDR14_BRNTAKEN: |
15605 | case R_PPC64_REL14_BRNTAKEN: | |
95f0d0d2 | 15606 | insn |= bfd_get_32 (input_bfd, |
411e1bfb | 15607 | contents + rel->r_offset) & ~(0x01 << 21); |
1a0670f3 | 15608 | /* Fall through. */ |
86c76c7b | 15609 | |
b25116a9 AM |
15610 | case R_PPC64_REL14: |
15611 | max_br_offset = 1 << 15; | |
1a0670f3 | 15612 | /* Fall through. */ |
5bd4f169 | 15613 | |
65f38f15 | 15614 | case R_PPC64_REL24: |
05d0e962 | 15615 | case R_PPC64_REL24_NOTOC: |
23cedd1d | 15616 | case R_PPC64_PLTCALL: |
5663e321 | 15617 | case R_PPC64_PLTCALL_NOTOC: |
ad8e1ba5 AM |
15618 | /* Calls to functions with a different TOC, such as calls to |
15619 | shared objects, need to alter the TOC pointer. This is | |
15620 | done using a linkage stub. A REL24 branching to these | |
15621 | linkage stubs needs to be followed by a nop, as the nop | |
15622 | will be replaced with an instruction to restore the TOC | |
15623 | base pointer. */ | |
8387904d | 15624 | fdh = h; |
b31867b6 AM |
15625 | if (h != NULL |
15626 | && h->oh != NULL | |
15627 | && h->oh->is_func_descriptor) | |
15628 | fdh = ppc_follow_link (h->oh); | |
31c76678 DK |
15629 | stub_entry = ppc_get_stub_entry (input_section, sec, fdh, &orig_rel, |
15630 | htab); | |
5663e321 AM |
15631 | if ((r_type == R_PPC64_PLTCALL |
15632 | || r_type == R_PPC64_PLTCALL_NOTOC) | |
23cedd1d | 15633 | && stub_entry != NULL |
05d0e962 AM |
15634 | && stub_entry->stub_type >= ppc_stub_plt_call |
15635 | && stub_entry->stub_type <= ppc_stub_plt_call_both) | |
23cedd1d AM |
15636 | stub_entry = NULL; |
15637 | ||
6abec6bc | 15638 | if (stub_entry != NULL |
d0abeec8 AM |
15639 | && ((stub_entry->stub_type >= ppc_stub_plt_call |
15640 | && stub_entry->stub_type <= ppc_stub_plt_call_both) | |
ad8e1ba5 | 15641 | || stub_entry->stub_type == ppc_stub_plt_branch_r2off |
05d0e962 AM |
15642 | || stub_entry->stub_type == ppc_stub_plt_branch_both |
15643 | || stub_entry->stub_type == ppc_stub_long_branch_r2off | |
15644 | || stub_entry->stub_type == ppc_stub_long_branch_both)) | |
41bd81ab | 15645 | { |
b25116a9 | 15646 | bfd_boolean can_plt_call = FALSE; |
721956f4 | 15647 | |
6e1816be AM |
15648 | if (stub_entry->stub_type == ppc_stub_plt_call |
15649 | && !htab->opd_abi | |
15650 | && htab->params->plt_localentry0 != 0 | |
15651 | && is_elfv2_localentry0 (&h->elf)) | |
15652 | { | |
15653 | /* The function doesn't use or change r2. */ | |
15654 | can_plt_call = TRUE; | |
15655 | } | |
05d0e962 AM |
15656 | else if (r_type == R_PPC64_REL24_NOTOC) |
15657 | { | |
15658 | /* NOTOC calls don't need to restore r2. */ | |
15659 | can_plt_call = TRUE; | |
15660 | } | |
6e1816be | 15661 | |
f378ab09 | 15662 | /* All of these stubs may modify r2, so there must be a |
ba8ca3e7 AM |
15663 | branch and link followed by a nop. The nop is |
15664 | replaced by an insn to restore r2. */ | |
6e1816be | 15665 | else if (rel->r_offset + 8 <= input_section->size) |
41bd81ab | 15666 | { |
ba8ca3e7 AM |
15667 | unsigned long br; |
15668 | ||
15669 | br = bfd_get_32 (input_bfd, | |
15670 | contents + rel->r_offset); | |
15671 | if ((br & 1) != 0) | |
41bd81ab | 15672 | { |
ba8ca3e7 AM |
15673 | unsigned long nop; |
15674 | ||
15675 | nop = bfd_get_32 (input_bfd, | |
15676 | contents + rel->r_offset + 4); | |
23cedd1d AM |
15677 | if (nop == LD_R2_0R1 + STK_TOC (htab)) |
15678 | can_plt_call = TRUE; | |
15679 | else if (nop == NOP | |
15680 | || nop == CROR_151515 | |
15681 | || nop == CROR_313131) | |
a7f2871e | 15682 | { |
ba8ca3e7 | 15683 | if (h != NULL |
ed7007c1 | 15684 | && is_tls_get_addr (&h->elf, htab) |
7c9cf415 | 15685 | && htab->params->tls_get_addr_opt) |
ba8ca3e7 AM |
15686 | { |
15687 | /* Special stub used, leave nop alone. */ | |
15688 | } | |
15689 | else | |
a078d95a AM |
15690 | bfd_put_32 (input_bfd, |
15691 | LD_R2_0R1 + STK_TOC (htab), | |
ba8ca3e7 AM |
15692 | contents + rel->r_offset + 4); |
15693 | can_plt_call = TRUE; | |
a7f2871e | 15694 | } |
41bd81ab | 15695 | } |
5bd4f169 | 15696 | } |
721956f4 | 15697 | |
ba8ca3e7 | 15698 | if (!can_plt_call && h != NULL) |
721956f4 | 15699 | { |
ba8ca3e7 AM |
15700 | const char *name = h->elf.root.root.string; |
15701 | ||
15702 | if (*name == '.') | |
15703 | ++name; | |
15704 | ||
15705 | if (strncmp (name, "__libc_start_main", 17) == 0 | |
15706 | && (name[17] == 0 || name[17] == '@')) | |
6ab189d5 | 15707 | { |
ba8ca3e7 AM |
15708 | /* Allow crt1 branch to go via a toc adjusting |
15709 | stub. Other calls that never return could do | |
15710 | the same, if we could detect such. */ | |
b25116a9 | 15711 | can_plt_call = TRUE; |
6ab189d5 | 15712 | } |
ba8ca3e7 AM |
15713 | } |
15714 | ||
15715 | if (!can_plt_call) | |
15716 | { | |
15717 | /* g++ as of 20130507 emits self-calls without a | |
15718 | following nop. This is arguably wrong since we | |
15719 | have conflicting information. On the one hand a | |
15720 | global symbol and on the other a local call | |
15721 | sequence, but don't error for this special case. | |
15722 | It isn't possible to cheaply verify we have | |
15723 | exactly such a call. Allow all calls to the same | |
15724 | section. */ | |
15725 | asection *code_sec = sec; | |
15726 | ||
15727 | if (get_opd_info (sec) != NULL) | |
ad8e1ba5 | 15728 | { |
ba8ca3e7 AM |
15729 | bfd_vma off = (relocation + addend |
15730 | - sec->output_section->vma | |
15731 | - sec->output_offset); | |
bc30df16 | 15732 | |
ba8ca3e7 | 15733 | opd_entry_value (sec, off, &code_sec, NULL, FALSE); |
ad8e1ba5 | 15734 | } |
ba8ca3e7 AM |
15735 | if (code_sec == input_section) |
15736 | can_plt_call = TRUE; | |
15737 | } | |
15738 | ||
15739 | if (!can_plt_call) | |
15740 | { | |
05d0e962 AM |
15741 | if (stub_entry->stub_type >= ppc_stub_plt_call |
15742 | && stub_entry->stub_type <= ppc_stub_plt_call_both) | |
4805fc55 | 15743 | info->callbacks->einfo |
695344c0 | 15744 | /* xgettext:c-format */ |
c1c8c1ef | 15745 | (_("%H: call to `%pT' lacks nop, can't restore toc; " |
f53ad3cf | 15746 | "(plt call stub)\n"), |
4805fc55 AM |
15747 | input_bfd, input_section, rel->r_offset, sym_name); |
15748 | else | |
15749 | info->callbacks->einfo | |
695344c0 | 15750 | /* xgettext:c-format */ |
c1c8c1ef | 15751 | (_("%H: call to `%pT' lacks nop, can't restore toc; " |
f53ad3cf | 15752 | "(toc save/adjust stub)\n"), |
4805fc55 | 15753 | input_bfd, input_section, rel->r_offset, sym_name); |
ba8ca3e7 AM |
15754 | |
15755 | bfd_set_error (bfd_error_bad_value); | |
15756 | ret = FALSE; | |
721956f4 AM |
15757 | } |
15758 | ||
b25116a9 | 15759 | if (can_plt_call |
05d0e962 AM |
15760 | && stub_entry->stub_type >= ppc_stub_plt_call |
15761 | && stub_entry->stub_type <= ppc_stub_plt_call_both) | |
b25116a9 AM |
15762 | unresolved_reloc = FALSE; |
15763 | } | |
15764 | ||
6abec6bc AM |
15765 | if ((stub_entry == NULL |
15766 | || stub_entry->stub_type == ppc_stub_long_branch | |
15767 | || stub_entry->stub_type == ppc_stub_plt_branch) | |
8387904d AM |
15768 | && get_opd_info (sec) != NULL) |
15769 | { | |
15770 | /* The branch destination is the value of the opd entry. */ | |
4cc603a5 AM |
15771 | bfd_vma off = (relocation + addend |
15772 | - sec->output_section->vma | |
15773 | - sec->output_offset); | |
aef36ac1 | 15774 | bfd_vma dest = opd_entry_value (sec, off, NULL, NULL, FALSE); |
8387904d AM |
15775 | if (dest != (bfd_vma) -1) |
15776 | { | |
15777 | relocation = dest; | |
15778 | addend = 0; | |
bc30df16 | 15779 | reloc_dest = DEST_OPD; |
8387904d AM |
15780 | } |
15781 | } | |
15782 | ||
b25116a9 AM |
15783 | /* If the branch is out of reach we ought to have a long |
15784 | branch stub. */ | |
15785 | from = (rel->r_offset | |
15786 | + input_section->output_offset | |
15787 | + input_section->output_section->vma); | |
15788 | ||
6911b7dc AM |
15789 | relocation += PPC64_LOCAL_ENTRY_OFFSET (fdh |
15790 | ? fdh->elf.other | |
15791 | : sym->st_other); | |
15792 | ||
6abec6bc AM |
15793 | if (stub_entry != NULL |
15794 | && (stub_entry->stub_type == ppc_stub_long_branch | |
15795 | || stub_entry->stub_type == ppc_stub_plt_branch) | |
15796 | && (r_type == R_PPC64_ADDR14_BRTAKEN | |
15797 | || r_type == R_PPC64_ADDR14_BRNTAKEN | |
15798 | || (relocation + addend - from + max_br_offset | |
15799 | < 2 * max_br_offset))) | |
15800 | /* Don't use the stub if this branch is in range. */ | |
15801 | stub_entry = NULL; | |
b25116a9 | 15802 | |
05d0e962 AM |
15803 | if (stub_entry != NULL |
15804 | && (stub_entry->stub_type == ppc_stub_long_branch_notoc | |
15805 | || stub_entry->stub_type == ppc_stub_long_branch_both | |
15806 | || stub_entry->stub_type == ppc_stub_plt_branch_notoc | |
15807 | || stub_entry->stub_type == ppc_stub_plt_branch_both) | |
15808 | && (r_type != R_PPC64_REL24_NOTOC | |
15809 | || ((fdh ? fdh->elf.other : sym->st_other) | |
4a4e7361 | 15810 | & STO_PPC64_LOCAL_MASK) <= 1 << STO_PPC64_LOCAL_BIT) |
05d0e962 AM |
15811 | && (relocation + addend - from + max_br_offset |
15812 | < 2 * max_br_offset)) | |
15813 | stub_entry = NULL; | |
15814 | ||
15815 | if (stub_entry != NULL | |
15816 | && (stub_entry->stub_type == ppc_stub_long_branch_r2off | |
15817 | || stub_entry->stub_type == ppc_stub_long_branch_both | |
15818 | || stub_entry->stub_type == ppc_stub_plt_branch_r2off | |
15819 | || stub_entry->stub_type == ppc_stub_plt_branch_both) | |
15820 | && r_type == R_PPC64_REL24_NOTOC | |
15821 | && (relocation + addend - from + max_br_offset | |
15822 | < 2 * max_br_offset)) | |
15823 | stub_entry = NULL; | |
15824 | ||
b25116a9 AM |
15825 | if (stub_entry != NULL) |
15826 | { | |
15827 | /* Munge up the value and addend so that we call the stub | |
15828 | rather than the procedure directly. */ | |
a4b6fadd AM |
15829 | asection *stub_sec = stub_entry->group->stub_sec; |
15830 | ||
15831 | if (stub_entry->stub_type == ppc_stub_save_res) | |
15832 | relocation += (stub_sec->output_offset | |
15833 | + stub_sec->output_section->vma | |
15834 | + stub_sec->size - htab->sfpr->size | |
15835 | - htab->sfpr->output_offset | |
15836 | - htab->sfpr->output_section->vma); | |
15837 | else | |
15838 | relocation = (stub_entry->stub_offset | |
15839 | + stub_sec->output_offset | |
15840 | + stub_sec->output_section->vma); | |
b25116a9 | 15841 | addend = 0; |
bc30df16 | 15842 | reloc_dest = DEST_STUB; |
3b421ab3 | 15843 | |
05d0e962 AM |
15844 | if (((stub_entry->stub_type == ppc_stub_plt_call |
15845 | && ALWAYS_EMIT_R2SAVE) | |
15846 | || stub_entry->stub_type == ppc_stub_plt_call_r2save | |
15847 | || stub_entry->stub_type == ppc_stub_plt_call_both) | |
e81b4c93 | 15848 | && !(h != NULL |
ed7007c1 | 15849 | && is_tls_get_addr (&h->elf, htab) |
e81b4c93 | 15850 | && htab->params->tls_get_addr_opt) |
3b421ab3 AM |
15851 | && rel + 1 < relend |
15852 | && rel[1].r_offset == rel->r_offset + 4 | |
15853 | && ELF64_R_TYPE (rel[1].r_info) == R_PPC64_TOCSAVE) | |
15854 | relocation += 4; | |
05d0e962 AM |
15855 | else if ((stub_entry->stub_type == ppc_stub_long_branch_both |
15856 | || stub_entry->stub_type == ppc_stub_plt_branch_both | |
15857 | || stub_entry->stub_type == ppc_stub_plt_call_both) | |
15858 | && r_type == R_PPC64_REL24_NOTOC) | |
15859 | relocation += 4; | |
5663e321 AM |
15860 | |
15861 | if (r_type == R_PPC64_REL24_NOTOC | |
15862 | && (stub_entry->stub_type == ppc_stub_plt_call_notoc | |
15863 | || stub_entry->stub_type == ppc_stub_plt_call_both)) | |
15864 | htab->notoc_plt = 1; | |
b25116a9 AM |
15865 | } |
15866 | ||
15867 | if (insn != 0) | |
15868 | { | |
794e51c0 | 15869 | if (is_isa_v2) |
721956f4 | 15870 | { |
b25116a9 AM |
15871 | /* Set 'a' bit. This is 0b00010 in BO field for branch |
15872 | on CR(BI) insns (BO == 001at or 011at), and 0b01000 | |
15873 | for branch on CTR insns (BO == 1a00t or 1a01t). */ | |
15874 | if ((insn & (0x14 << 21)) == (0x04 << 21)) | |
15875 | insn |= 0x02 << 21; | |
15876 | else if ((insn & (0x14 << 21)) == (0x10 << 21)) | |
15877 | insn |= 0x08 << 21; | |
15878 | else | |
15879 | break; | |
15880 | } | |
15881 | else | |
15882 | { | |
15883 | /* Invert 'y' bit if not the default. */ | |
4cc603a5 | 15884 | if ((bfd_signed_vma) (relocation + addend - from) < 0) |
b25116a9 | 15885 | insn ^= 0x01 << 21; |
721956f4 | 15886 | } |
b25116a9 | 15887 | |
95f0d0d2 | 15888 | bfd_put_32 (input_bfd, insn, contents + rel->r_offset); |
5bd4f169 | 15889 | } |
e86ce104 | 15890 | |
06da1e8e AM |
15891 | /* NOP out calls to undefined weak functions. |
15892 | We can thus call a weak function without first | |
15893 | checking whether the function is defined. */ | |
b25116a9 | 15894 | else if (h != NULL |
039b3fef | 15895 | && h->elf.root.type == bfd_link_hash_undefweak |
766bc656 | 15896 | && h->elf.dynindx == -1 |
05d0e962 AM |
15897 | && (r_type == R_PPC64_REL24 |
15898 | || r_type == R_PPC64_REL24_NOTOC) | |
b25116a9 | 15899 | && relocation == 0 |
4cc603a5 | 15900 | && addend == 0) |
e86ce104 | 15901 | { |
95f0d0d2 | 15902 | bfd_put_32 (input_bfd, NOP, contents + rel->r_offset); |
c316a17c | 15903 | goto copy_reloc; |
e86ce104 | 15904 | } |
65f38f15 | 15905 | break; |
066f4018 AM |
15906 | |
15907 | case R_PPC64_GOT16_DS: | |
06507dab AM |
15908 | if ((h ? h->elf.type : ELF_ST_TYPE (sym->st_info)) == STT_GNU_IFUNC) |
15909 | break; | |
066f4018 AM |
15910 | from = TOCstart + htab->sec_info[input_section->id].toc_off; |
15911 | if (relocation + addend - from + 0x8000 < 0x10000 | |
15912 | && SYMBOL_REFERENCES_LOCAL (info, &h->elf)) | |
15913 | { | |
15914 | insn = bfd_get_32 (input_bfd, contents + (rel->r_offset & ~3)); | |
2365f8d7 | 15915 | if ((insn & (0x3fu << 26 | 0x3)) == 58u << 26 /* ld */) |
066f4018 AM |
15916 | { |
15917 | insn += (14u << 26) - (58u << 26); | |
15918 | bfd_put_32 (input_bfd, insn, contents + (rel->r_offset & ~3)); | |
15919 | r_type = R_PPC64_TOC16; | |
15920 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
15921 | } | |
15922 | } | |
15923 | break; | |
15924 | ||
15925 | case R_PPC64_GOT16_LO_DS: | |
15926 | case R_PPC64_GOT16_HA: | |
06507dab AM |
15927 | if ((h ? h->elf.type : ELF_ST_TYPE (sym->st_info)) == STT_GNU_IFUNC) |
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: | |
06507dab AM |
15950 | if ((h ? h->elf.type : ELF_ST_TYPE (sym->st_info)) == STT_GNU_IFUNC) |
15951 | break; | |
4a421c53 AM |
15952 | from = (rel->r_offset |
15953 | + input_section->output_section->vma | |
15954 | + input_section->output_offset); | |
15955 | if (relocation - from + (1ULL << 33) < 1ULL << 34 | |
15956 | && SYMBOL_REFERENCES_LOCAL (info, &h->elf)) | |
15957 | { | |
15958 | offset = rel->r_offset; | |
15959 | pinsn = bfd_get_32 (input_bfd, contents + offset); | |
15960 | pinsn <<= 32; | |
15961 | pinsn |= bfd_get_32 (input_bfd, contents + offset + 4); | |
15962 | if ((pinsn & ((-1ULL << 50) | (63ULL << 26))) | |
15963 | == ((1ULL << 58) | (1ULL << 52) | (57ULL << 26) /* pld */)) | |
15964 | { | |
15965 | /* Replace with paddi. */ | |
15966 | pinsn += (2ULL << 56) + (14ULL << 26) - (57ULL << 26); | |
15967 | r_type = R_PPC64_PCREL34; | |
15968 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
15969 | bfd_put_32 (input_bfd, pinsn >> 32, contents + offset); | |
15970 | bfd_put_32 (input_bfd, pinsn, contents + offset + 4); | |
15971 | goto pcrelopt; | |
15972 | } | |
15973 | } | |
15974 | break; | |
15975 | ||
15976 | case R_PPC64_PCREL34: | |
15977 | if (SYMBOL_REFERENCES_LOCAL (info, &h->elf)) | |
15978 | { | |
15979 | offset = rel->r_offset; | |
15980 | pinsn = bfd_get_32 (input_bfd, contents + offset); | |
15981 | pinsn <<= 32; | |
15982 | pinsn |= bfd_get_32 (input_bfd, contents + offset + 4); | |
15983 | if ((pinsn & ((-1ULL << 50) | (63ULL << 26))) | |
15984 | == ((1ULL << 58) | (2ULL << 56) | (1ULL << 52) | |
15985 | | (14ULL << 26) /* paddi */)) | |
15986 | { | |
15987 | pcrelopt: | |
15988 | if (rel + 1 < relend | |
15989 | && rel[1].r_offset == offset | |
15990 | && rel[1].r_info == ELF64_R_INFO (0, R_PPC64_PCREL_OPT)) | |
15991 | { | |
15992 | bfd_vma off2 = rel[1].r_addend; | |
15993 | if (off2 == 0) | |
15994 | /* zero means next insn. */ | |
15995 | off2 = 8; | |
15996 | off2 += offset; | |
15997 | if (off2 + 4 <= input_section->size) | |
15998 | { | |
15999 | uint64_t pinsn2; | |
dd9b12c2 | 16000 | bfd_signed_vma addend_off; |
4a421c53 AM |
16001 | pinsn2 = bfd_get_32 (input_bfd, contents + off2); |
16002 | pinsn2 <<= 32; | |
16003 | if ((pinsn2 & (63ULL << 58)) == 1ULL << 58) | |
77486630 AM |
16004 | { |
16005 | if (off2 + 8 > input_section->size) | |
16006 | break; | |
16007 | pinsn2 |= bfd_get_32 (input_bfd, | |
16008 | contents + off2 + 4); | |
16009 | } | |
dd9b12c2 | 16010 | if (xlate_pcrel_opt (&pinsn, &pinsn2, &addend_off)) |
4a421c53 | 16011 | { |
dd9b12c2 AM |
16012 | addend += addend_off; |
16013 | rel->r_addend = addend; | |
4a421c53 AM |
16014 | bfd_put_32 (input_bfd, pinsn >> 32, |
16015 | contents + offset); | |
16016 | bfd_put_32 (input_bfd, pinsn, | |
16017 | contents + offset + 4); | |
16018 | bfd_put_32 (input_bfd, pinsn2 >> 32, | |
16019 | contents + off2); | |
77486630 AM |
16020 | if ((pinsn2 & (63ULL << 58)) == 1ULL << 58) |
16021 | bfd_put_32 (input_bfd, pinsn2, | |
16022 | contents + off2 + 4); | |
4a421c53 AM |
16023 | } |
16024 | } | |
16025 | } | |
16026 | } | |
16027 | } | |
16028 | break; | |
65f38f15 | 16029 | } |
5bd4f169 | 16030 | |
411e1bfb | 16031 | tls_type = 0; |
23cedd1d | 16032 | save_unresolved_reloc = unresolved_reloc; |
65f38f15 AM |
16033 | switch (r_type) |
16034 | { | |
16035 | default: | |
cf97bcb0 AM |
16036 | /* xgettext:c-format */ |
16037 | _bfd_error_handler (_("%pB: %s unsupported"), | |
16038 | input_bfd, ppc64_elf_howto_table[r_type]->name); | |
5bd4f169 | 16039 | |
65f38f15 | 16040 | bfd_set_error (bfd_error_bad_value); |
b34976b6 | 16041 | ret = FALSE; |
c316a17c | 16042 | goto copy_reloc; |
5bd4f169 | 16043 | |
65f38f15 | 16044 | case R_PPC64_NONE: |
411e1bfb | 16045 | case R_PPC64_TLS: |
727fc41e AM |
16046 | case R_PPC64_TLSGD: |
16047 | case R_PPC64_TLSLD: | |
3b421ab3 | 16048 | case R_PPC64_TOCSAVE: |
04c9666a AM |
16049 | case R_PPC64_GNU_VTINHERIT: |
16050 | case R_PPC64_GNU_VTENTRY: | |
006589cf | 16051 | case R_PPC64_ENTRY: |
4a421c53 | 16052 | case R_PPC64_PCREL_OPT: |
c316a17c | 16053 | goto copy_reloc; |
5bd4f169 AM |
16054 | |
16055 | /* GOT16 relocations. Like an ADDR16 using the symbol's | |
16056 | address in the GOT as relocation value instead of the | |
411e1bfb | 16057 | symbol's value itself. Also, create a GOT entry for the |
5bd4f169 | 16058 | symbol and put the symbol value there. */ |
411e1bfb AM |
16059 | case R_PPC64_GOT_TLSGD16: |
16060 | case R_PPC64_GOT_TLSGD16_LO: | |
16061 | case R_PPC64_GOT_TLSGD16_HI: | |
16062 | case R_PPC64_GOT_TLSGD16_HA: | |
87c69f97 | 16063 | case R_PPC64_GOT_TLSGD_PCREL34: |
951fd09b | 16064 | tls_type = TLS_TLS | TLS_GD; |
411e1bfb AM |
16065 | goto dogot; |
16066 | ||
16067 | case R_PPC64_GOT_TLSLD16: | |
16068 | case R_PPC64_GOT_TLSLD16_LO: | |
16069 | case R_PPC64_GOT_TLSLD16_HI: | |
16070 | case R_PPC64_GOT_TLSLD16_HA: | |
87c69f97 | 16071 | case R_PPC64_GOT_TLSLD_PCREL34: |
951fd09b | 16072 | tls_type = TLS_TLS | TLS_LD; |
411e1bfb AM |
16073 | goto dogot; |
16074 | ||
16075 | case R_PPC64_GOT_TPREL16_DS: | |
16076 | case R_PPC64_GOT_TPREL16_LO_DS: | |
16077 | case R_PPC64_GOT_TPREL16_HI: | |
16078 | case R_PPC64_GOT_TPREL16_HA: | |
87c69f97 | 16079 | case R_PPC64_GOT_TPREL_PCREL34: |
411e1bfb AM |
16080 | tls_type = TLS_TLS | TLS_TPREL; |
16081 | goto dogot; | |
16082 | ||
16083 | case R_PPC64_GOT_DTPREL16_DS: | |
16084 | case R_PPC64_GOT_DTPREL16_LO_DS: | |
16085 | case R_PPC64_GOT_DTPREL16_HI: | |
16086 | case R_PPC64_GOT_DTPREL16_HA: | |
87c69f97 | 16087 | case R_PPC64_GOT_DTPREL_PCREL34: |
411e1bfb AM |
16088 | tls_type = TLS_TLS | TLS_DTPREL; |
16089 | goto dogot; | |
16090 | ||
65f38f15 AM |
16091 | case R_PPC64_GOT16: |
16092 | case R_PPC64_GOT16_LO: | |
16093 | case R_PPC64_GOT16_HI: | |
16094 | case R_PPC64_GOT16_HA: | |
16095 | case R_PPC64_GOT16_DS: | |
16096 | case R_PPC64_GOT16_LO_DS: | |
5663e321 | 16097 | case R_PPC64_GOT_PCREL34: |
411e1bfb | 16098 | dogot: |
5bd4f169 AM |
16099 | { |
16100 | /* Relocation is to the entry for this symbol in the global | |
16101 | offset table. */ | |
e717da7e | 16102 | asection *got; |
d881513a | 16103 | bfd_vma *offp; |
5bd4f169 | 16104 | bfd_vma off; |
d881513a | 16105 | unsigned long indx = 0; |
927be08e | 16106 | struct got_entry *ent; |
65f38f15 | 16107 | |
d881513a | 16108 | if (tls_type == (TLS_TLS | TLS_LD) |
f749f26e | 16109 | && SYMBOL_REFERENCES_LOCAL (info, &h->elf)) |
927be08e | 16110 | ent = ppc64_tlsld_got (input_bfd); |
411e1bfb | 16111 | else |
5bd4f169 | 16112 | { |
d881513a AM |
16113 | if (h != NULL) |
16114 | { | |
f0158f44 AM |
16115 | if (!htab->elf.dynamic_sections_created |
16116 | || h->elf.dynindx == -1 | |
16117 | || SYMBOL_REFERENCES_LOCAL (info, &h->elf) | |
21d68fcd | 16118 | || UNDEFWEAK_NO_DYNAMIC_RELOC (info, &h->elf)) |
d881513a AM |
16119 | /* This is actually a static link, or it is a |
16120 | -Bsymbolic link and the symbol is defined | |
16121 | locally, or the symbol was forced to be local | |
16122 | because of a version file. */ | |
16123 | ; | |
16124 | else | |
16125 | { | |
039b3fef | 16126 | indx = h->elf.dynindx; |
d881513a AM |
16127 | unresolved_reloc = FALSE; |
16128 | } | |
039b3fef | 16129 | ent = h->elf.got.glist; |
d881513a | 16130 | } |
411e1bfb | 16131 | else |
5bd4f169 | 16132 | { |
d881513a AM |
16133 | if (local_got_ents == NULL) |
16134 | abort (); | |
16135 | ent = local_got_ents[r_symndx]; | |
5bd4f169 | 16136 | } |
d881513a AM |
16137 | |
16138 | for (; ent != NULL; ent = ent->next) | |
133a1f60 | 16139 | if (ent->addend == orig_rel.r_addend |
e717da7e | 16140 | && ent->owner == input_bfd |
d881513a AM |
16141 | && ent->tls_type == tls_type) |
16142 | break; | |
5bd4f169 | 16143 | } |
411e1bfb | 16144 | |
927be08e AM |
16145 | if (ent == NULL) |
16146 | abort (); | |
16147 | if (ent->is_indirect) | |
16148 | ent = ent->got.ent; | |
16149 | offp = &ent->got.offset; | |
16150 | got = ppc64_elf_tdata (ent->owner)->got; | |
e717da7e AM |
16151 | if (got == NULL) |
16152 | abort (); | |
16153 | ||
411e1bfb AM |
16154 | /* The offset must always be a multiple of 8. We use the |
16155 | least significant bit to record whether we have already | |
16156 | processed this entry. */ | |
d881513a | 16157 | off = *offp; |
411e1bfb AM |
16158 | if ((off & 1) != 0) |
16159 | off &= ~1; | |
5bd4f169 AM |
16160 | else |
16161 | { | |
411e1bfb AM |
16162 | /* Generate relocs for the dynamic linker, except in |
16163 | the case of TLSLD where we'll use one entry per | |
16164 | module. */ | |
25f23106 AM |
16165 | asection *relgot; |
16166 | bfd_boolean ifunc; | |
e717da7e | 16167 | |
d881513a | 16168 | *offp = off | 1; |
25f23106 AM |
16169 | relgot = NULL; |
16170 | ifunc = (h != NULL | |
16171 | ? h->elf.type == STT_GNU_IFUNC | |
16172 | : ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC); | |
19e08130 | 16173 | if (ifunc) |
82e66161 AM |
16174 | { |
16175 | relgot = htab->elf.irelplt; | |
efb2a7b4 | 16176 | if (indx == 0 || is_static_defined (&h->elf)) |
cebd6b8a | 16177 | htab->elf.ifunc_resolvers = TRUE; |
82e66161 | 16178 | } |
f0158f44 AM |
16179 | else if (indx != 0 |
16180 | || (bfd_link_pic (info) | |
16181 | && (h == NULL | |
f749f26e AM |
16182 | || !UNDEFWEAK_NO_DYNAMIC_RELOC (info, &h->elf)) |
16183 | && !(tls_type != 0 | |
f15d0b54 AM |
16184 | && bfd_link_executable (info) |
16185 | && SYMBOL_REFERENCES_LOCAL (info, &h->elf)))) | |
19e08130 | 16186 | relgot = ppc64_elf_tdata (ent->owner)->relgot; |
25f23106 | 16187 | if (relgot != NULL) |
5bd4f169 | 16188 | { |
e717da7e AM |
16189 | outrel.r_offset = (got->output_section->vma |
16190 | + got->output_offset | |
411e1bfb | 16191 | + off); |
133a1f60 | 16192 | outrel.r_addend = orig_rel.r_addend; |
d881513a | 16193 | if (tls_type & (TLS_LD | TLS_GD)) |
5bd4f169 | 16194 | { |
411e1bfb | 16195 | outrel.r_addend = 0; |
e515b051 | 16196 | outrel.r_info = ELF64_R_INFO (indx, R_PPC64_DTPMOD64); |
d881513a AM |
16197 | if (tls_type == (TLS_TLS | TLS_GD)) |
16198 | { | |
e717da7e AM |
16199 | loc = relgot->contents; |
16200 | loc += (relgot->reloc_count++ | |
d881513a AM |
16201 | * sizeof (Elf64_External_Rela)); |
16202 | bfd_elf64_swap_reloca_out (output_bfd, | |
16203 | &outrel, loc); | |
e515b051 | 16204 | outrel.r_offset += 8; |
133a1f60 | 16205 | outrel.r_addend = orig_rel.r_addend; |
d881513a AM |
16206 | outrel.r_info |
16207 | = ELF64_R_INFO (indx, R_PPC64_DTPREL64); | |
d881513a | 16208 | } |
411e1bfb | 16209 | } |
951fd09b | 16210 | else if (tls_type == (TLS_TLS | TLS_DTPREL)) |
411e1bfb | 16211 | outrel.r_info = ELF64_R_INFO (indx, R_PPC64_DTPREL64); |
951fd09b | 16212 | else if (tls_type == (TLS_TLS | TLS_TPREL)) |
411e1bfb | 16213 | outrel.r_info = ELF64_R_INFO (indx, R_PPC64_TPREL64); |
25f23106 AM |
16214 | else if (indx != 0) |
16215 | outrel.r_info = ELF64_R_INFO (indx, R_PPC64_GLOB_DAT); | |
16216 | else | |
81407a69 | 16217 | { |
25f23106 AM |
16218 | if (ifunc) |
16219 | outrel.r_info = ELF64_R_INFO (0, R_PPC64_IRELATIVE); | |
16220 | else | |
16221 | outrel.r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE); | |
81407a69 AM |
16222 | |
16223 | /* Write the .got section contents for the sake | |
16224 | of prelink. */ | |
e717da7e | 16225 | loc = got->contents + off; |
23fbd6fa JJ |
16226 | bfd_put_64 (output_bfd, outrel.r_addend + relocation, |
16227 | loc); | |
81407a69 | 16228 | } |
81407a69 AM |
16229 | |
16230 | if (indx == 0 && tls_type != (TLS_TLS | TLS_LD)) | |
e515b051 AM |
16231 | { |
16232 | outrel.r_addend += relocation; | |
16233 | if (tls_type & (TLS_GD | TLS_DTPREL | TLS_TPREL)) | |
989f9879 AM |
16234 | { |
16235 | if (htab->elf.tls_sec == NULL) | |
16236 | outrel.r_addend = 0; | |
16237 | else | |
16238 | outrel.r_addend -= htab->elf.tls_sec->vma; | |
16239 | } | |
e515b051 | 16240 | } |
e717da7e AM |
16241 | loc = relgot->contents; |
16242 | loc += (relgot->reloc_count++ | |
411e1bfb AM |
16243 | * sizeof (Elf64_External_Rela)); |
16244 | bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc); | |
16245 | } | |
16246 | ||
ad8e1ba5 | 16247 | /* Init the .got section contents here if we're not |
81407a69 | 16248 | emitting a reloc. */ |
d881513a | 16249 | else |
411e1bfb | 16250 | { |
133a1f60 | 16251 | relocation += orig_rel.r_addend; |
f0158f44 | 16252 | if (tls_type != 0) |
411e1bfb | 16253 | { |
989f9879 AM |
16254 | if (htab->elf.tls_sec == NULL) |
16255 | relocation = 0; | |
16256 | else | |
16257 | { | |
f0158f44 AM |
16258 | if (tls_type & TLS_LD) |
16259 | relocation = 0; | |
16260 | else | |
16261 | relocation -= htab->elf.tls_sec->vma + DTP_OFFSET; | |
676ee2b5 | 16262 | if (tls_type & TLS_TPREL) |
989f9879 AM |
16263 | relocation += DTP_OFFSET - TP_OFFSET; |
16264 | } | |
5bd4f169 | 16265 | |
f0158f44 | 16266 | if (tls_type & (TLS_GD | TLS_LD)) |
7b609f53 AM |
16267 | { |
16268 | bfd_put_64 (output_bfd, relocation, | |
e717da7e | 16269 | got->contents + off + 8); |
676ee2b5 | 16270 | relocation = 1; |
7b609f53 | 16271 | } |
411e1bfb AM |
16272 | } |
16273 | bfd_put_64 (output_bfd, relocation, | |
e717da7e | 16274 | got->contents + off); |
5bd4f169 AM |
16275 | } |
16276 | } | |
16277 | ||
65f38f15 AM |
16278 | if (off >= (bfd_vma) -2) |
16279 | abort (); | |
16280 | ||
bf102f86 | 16281 | relocation = got->output_section->vma + got->output_offset + off; |
133a1f60 | 16282 | addend = 0; |
c213164a | 16283 | if (!(r_type == R_PPC64_GOT_PCREL34 |
87c69f97 AM |
16284 | || r_type == R_PPC64_GOT_TLSGD_PCREL34 |
16285 | || r_type == R_PPC64_GOT_TLSLD_PCREL34 | |
16286 | || r_type == R_PPC64_GOT_TPREL_PCREL34 | |
16287 | || r_type == R_PPC64_GOT_DTPREL_PCREL34)) | |
5663e321 | 16288 | addend = -(TOCstart + htab->sec_info[input_section->id].toc_off); |
5bd4f169 | 16289 | } |
65f38f15 AM |
16290 | break; |
16291 | ||
16292 | case R_PPC64_PLT16_HA: | |
16293 | case R_PPC64_PLT16_HI: | |
16294 | case R_PPC64_PLT16_LO: | |
08be3224 | 16295 | case R_PPC64_PLT16_LO_DS: |
5663e321 AM |
16296 | case R_PPC64_PLT_PCREL34: |
16297 | case R_PPC64_PLT_PCREL34_NOTOC: | |
65f38f15 AM |
16298 | case R_PPC64_PLT32: |
16299 | case R_PPC64_PLT64: | |
23cedd1d | 16300 | case R_PPC64_PLTSEQ: |
5663e321 | 16301 | case R_PPC64_PLTSEQ_NOTOC: |
23cedd1d | 16302 | case R_PPC64_PLTCALL: |
5663e321 | 16303 | case R_PPC64_PLTCALL_NOTOC: |
65f38f15 AM |
16304 | /* Relocation is to the entry for this symbol in the |
16305 | procedure linkage table. */ | |
23cedd1d | 16306 | unresolved_reloc = TRUE; |
cbf95972 AM |
16307 | { |
16308 | struct plt_entry **plt_list = NULL; | |
16309 | if (h != NULL) | |
16310 | plt_list = &h->elf.plt.plist; | |
16311 | else if (local_got_ents != NULL) | |
16312 | { | |
16313 | struct plt_entry **local_plt = (struct plt_entry **) | |
16314 | (local_got_ents + symtab_hdr->sh_info); | |
2d7ad24e | 16315 | plt_list = local_plt + r_symndx; |
cbf95972 AM |
16316 | } |
16317 | if (plt_list) | |
16318 | { | |
16319 | struct plt_entry *ent; | |
65f38f15 | 16320 | |
cbf95972 AM |
16321 | for (ent = *plt_list; ent != NULL; ent = ent->next) |
16322 | if (ent->plt.offset != (bfd_vma) -1 | |
133a1f60 | 16323 | && ent->addend == orig_rel.r_addend) |
cbf95972 AM |
16324 | { |
16325 | asection *plt; | |
08be3224 | 16326 | bfd_vma got; |
cbf95972 AM |
16327 | |
16328 | plt = htab->elf.splt; | |
16329 | if (!htab->elf.dynamic_sections_created | |
16330 | || h == NULL | |
16331 | || h->elf.dynindx == -1) | |
2d7ad24e AM |
16332 | { |
16333 | if (h != NULL | |
16334 | ? h->elf.type == STT_GNU_IFUNC | |
16335 | : ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC) | |
16336 | plt = htab->elf.iplt; | |
16337 | else | |
16338 | plt = htab->pltlocal; | |
16339 | } | |
16340 | relocation = (plt->output_section->vma | |
16341 | + plt->output_offset | |
16342 | + ent->plt.offset); | |
08be3224 | 16343 | if (r_type == R_PPC64_PLT16_HA |
2cdcc330 AM |
16344 | || r_type == R_PPC64_PLT16_HI |
16345 | || r_type == R_PPC64_PLT16_LO | |
16346 | || r_type == R_PPC64_PLT16_LO_DS) | |
08be3224 AM |
16347 | { |
16348 | got = (elf_gp (output_bfd) | |
16349 | + htab->sec_info[input_section->id].toc_off); | |
16350 | relocation -= got; | |
16351 | } | |
133a1f60 | 16352 | addend = 0; |
cbf95972 AM |
16353 | unresolved_reloc = FALSE; |
16354 | break; | |
16355 | } | |
16356 | } | |
16357 | } | |
65f38f15 | 16358 | break; |
5bd4f169 | 16359 | |
0b13192e AM |
16360 | case R_PPC64_TOC: |
16361 | /* Relocation value is TOC base. */ | |
16362 | relocation = TOCstart; | |
cf35638d | 16363 | if (r_symndx == STN_UNDEF) |
6f20ed8a | 16364 | relocation += htab->sec_info[input_section->id].toc_off; |
8517fae7 AM |
16365 | else if (unresolved_reloc) |
16366 | ; | |
6f20ed8a AM |
16367 | else if (sec != NULL && sec->id < htab->sec_info_arr_size) |
16368 | relocation += htab->sec_info[sec->id].toc_off; | |
0b13192e AM |
16369 | else |
16370 | unresolved_reloc = TRUE; | |
ab96bf03 | 16371 | goto dodyn; |
0b13192e | 16372 | |
5bd4f169 AM |
16373 | /* TOC16 relocs. We want the offset relative to the TOC base, |
16374 | which is the address of the start of the TOC plus 0x8000. | |
16375 | The TOC consists of sections .got, .toc, .tocbss, and .plt, | |
16376 | in this order. */ | |
65f38f15 AM |
16377 | case R_PPC64_TOC16: |
16378 | case R_PPC64_TOC16_LO: | |
16379 | case R_PPC64_TOC16_HI: | |
16380 | case R_PPC64_TOC16_DS: | |
16381 | case R_PPC64_TOC16_LO_DS: | |
16382 | case R_PPC64_TOC16_HA: | |
6f20ed8a | 16383 | addend -= TOCstart + htab->sec_info[input_section->id].toc_off; |
1bdd8fac AM |
16384 | if (h != NULL) |
16385 | goto dodyn; | |
5bd4f169 AM |
16386 | break; |
16387 | ||
16388 | /* Relocate against the beginning of the section. */ | |
65f38f15 AM |
16389 | case R_PPC64_SECTOFF: |
16390 | case R_PPC64_SECTOFF_LO: | |
16391 | case R_PPC64_SECTOFF_HI: | |
16392 | case R_PPC64_SECTOFF_DS: | |
16393 | case R_PPC64_SECTOFF_LO_DS: | |
16394 | case R_PPC64_SECTOFF_HA: | |
4ce794b7 | 16395 | if (sec != NULL) |
65f38f15 | 16396 | addend -= sec->output_section->vma; |
5bd4f169 AM |
16397 | break; |
16398 | ||
25f23106 AM |
16399 | case R_PPC64_REL16: |
16400 | case R_PPC64_REL16_LO: | |
16401 | case R_PPC64_REL16_HI: | |
16402 | case R_PPC64_REL16_HA: | |
4a969973 AM |
16403 | case R_PPC64_REL16_HIGH: |
16404 | case R_PPC64_REL16_HIGHA: | |
16405 | case R_PPC64_REL16_HIGHER: | |
16406 | case R_PPC64_REL16_HIGHERA: | |
16407 | case R_PPC64_REL16_HIGHEST: | |
16408 | case R_PPC64_REL16_HIGHESTA: | |
5663e321 AM |
16409 | case R_PPC64_REL16_HIGHER34: |
16410 | case R_PPC64_REL16_HIGHERA34: | |
16411 | case R_PPC64_REL16_HIGHEST34: | |
16412 | case R_PPC64_REL16_HIGHESTA34: | |
a680de9a | 16413 | case R_PPC64_REL16DX_HA: |
721956f4 AM |
16414 | case R_PPC64_REL14: |
16415 | case R_PPC64_REL14_BRNTAKEN: | |
16416 | case R_PPC64_REL14_BRTAKEN: | |
5d1634d7 | 16417 | case R_PPC64_REL24: |
05d0e962 | 16418 | case R_PPC64_REL24_NOTOC: |
5663e321 AM |
16419 | case R_PPC64_PCREL34: |
16420 | case R_PPC64_PCREL28: | |
5d1634d7 AM |
16421 | break; |
16422 | ||
411e1bfb AM |
16423 | case R_PPC64_TPREL16: |
16424 | case R_PPC64_TPREL16_LO: | |
16425 | case R_PPC64_TPREL16_HI: | |
16426 | case R_PPC64_TPREL16_HA: | |
16427 | case R_PPC64_TPREL16_DS: | |
16428 | case R_PPC64_TPREL16_LO_DS: | |
f9c6b907 AM |
16429 | case R_PPC64_TPREL16_HIGH: |
16430 | case R_PPC64_TPREL16_HIGHA: | |
411e1bfb AM |
16431 | case R_PPC64_TPREL16_HIGHER: |
16432 | case R_PPC64_TPREL16_HIGHERA: | |
16433 | case R_PPC64_TPREL16_HIGHEST: | |
16434 | case R_PPC64_TPREL16_HIGHESTA: | |
c213164a | 16435 | case R_PPC64_TPREL34: |
766bc656 AM |
16436 | if (h != NULL |
16437 | && h->elf.root.type == bfd_link_hash_undefweak | |
16438 | && h->elf.dynindx == -1) | |
16439 | { | |
16440 | /* Make this relocation against an undefined weak symbol | |
16441 | resolve to zero. This is really just a tweak, since | |
16442 | code using weak externs ought to check that they are | |
16443 | defined before using them. */ | |
16444 | bfd_byte *p = contents + rel->r_offset - d_offset; | |
16445 | ||
95f0d0d2 | 16446 | insn = bfd_get_32 (input_bfd, p); |
766bc656 AM |
16447 | insn = _bfd_elf_ppc_at_tprel_transform (insn, 13); |
16448 | if (insn != 0) | |
95f0d0d2 | 16449 | bfd_put_32 (input_bfd, insn, p); |
766bc656 AM |
16450 | break; |
16451 | } | |
989f9879 AM |
16452 | if (htab->elf.tls_sec != NULL) |
16453 | addend -= htab->elf.tls_sec->vma + TP_OFFSET; | |
7c8bbca5 AM |
16454 | /* The TPREL16 relocs shouldn't really be used in shared |
16455 | libs or with non-local symbols as that will result in | |
16456 | DT_TEXTREL being set, but support them anyway. */ | |
16457 | goto dodyn; | |
411e1bfb AM |
16458 | |
16459 | case R_PPC64_DTPREL16: | |
16460 | case R_PPC64_DTPREL16_LO: | |
16461 | case R_PPC64_DTPREL16_HI: | |
16462 | case R_PPC64_DTPREL16_HA: | |
16463 | case R_PPC64_DTPREL16_DS: | |
16464 | case R_PPC64_DTPREL16_LO_DS: | |
f9c6b907 AM |
16465 | case R_PPC64_DTPREL16_HIGH: |
16466 | case R_PPC64_DTPREL16_HIGHA: | |
411e1bfb AM |
16467 | case R_PPC64_DTPREL16_HIGHER: |
16468 | case R_PPC64_DTPREL16_HIGHERA: | |
16469 | case R_PPC64_DTPREL16_HIGHEST: | |
16470 | case R_PPC64_DTPREL16_HIGHESTA: | |
c213164a | 16471 | case R_PPC64_DTPREL34: |
989f9879 AM |
16472 | if (htab->elf.tls_sec != NULL) |
16473 | addend -= htab->elf.tls_sec->vma + DTP_OFFSET; | |
411e1bfb AM |
16474 | break; |
16475 | ||
45965137 AM |
16476 | case R_PPC64_ADDR64_LOCAL: |
16477 | addend += PPC64_LOCAL_ENTRY_OFFSET (h != NULL | |
16478 | ? h->elf.other | |
16479 | : sym->st_other); | |
16480 | break; | |
16481 | ||
e515b051 AM |
16482 | case R_PPC64_DTPMOD64: |
16483 | relocation = 1; | |
16484 | addend = 0; | |
16485 | goto dodyn; | |
16486 | ||
411e1bfb | 16487 | case R_PPC64_TPREL64: |
989f9879 AM |
16488 | if (htab->elf.tls_sec != NULL) |
16489 | addend -= htab->elf.tls_sec->vma + TP_OFFSET; | |
411e1bfb AM |
16490 | goto dodyn; |
16491 | ||
16492 | case R_PPC64_DTPREL64: | |
989f9879 AM |
16493 | if (htab->elf.tls_sec != NULL) |
16494 | addend -= htab->elf.tls_sec->vma + DTP_OFFSET; | |
1a0670f3 | 16495 | /* Fall through. */ |
411e1bfb | 16496 | |
65f38f15 AM |
16497 | /* Relocations that may need to be propagated if this is a |
16498 | dynamic object. */ | |
04c9666a | 16499 | case R_PPC64_REL30: |
65f38f15 AM |
16500 | case R_PPC64_REL32: |
16501 | case R_PPC64_REL64: | |
16502 | case R_PPC64_ADDR14: | |
16503 | case R_PPC64_ADDR14_BRNTAKEN: | |
16504 | case R_PPC64_ADDR14_BRTAKEN: | |
16505 | case R_PPC64_ADDR16: | |
16506 | case R_PPC64_ADDR16_DS: | |
16507 | case R_PPC64_ADDR16_HA: | |
16508 | case R_PPC64_ADDR16_HI: | |
f9c6b907 AM |
16509 | case R_PPC64_ADDR16_HIGH: |
16510 | case R_PPC64_ADDR16_HIGHA: | |
65f38f15 AM |
16511 | case R_PPC64_ADDR16_HIGHER: |
16512 | case R_PPC64_ADDR16_HIGHERA: | |
16513 | case R_PPC64_ADDR16_HIGHEST: | |
16514 | case R_PPC64_ADDR16_HIGHESTA: | |
16515 | case R_PPC64_ADDR16_LO: | |
16516 | case R_PPC64_ADDR16_LO_DS: | |
5663e321 AM |
16517 | case R_PPC64_ADDR16_HIGHER34: |
16518 | case R_PPC64_ADDR16_HIGHERA34: | |
16519 | case R_PPC64_ADDR16_HIGHEST34: | |
16520 | case R_PPC64_ADDR16_HIGHESTA34: | |
65f38f15 | 16521 | case R_PPC64_ADDR24: |
65f38f15 AM |
16522 | case R_PPC64_ADDR32: |
16523 | case R_PPC64_ADDR64: | |
16524 | case R_PPC64_UADDR16: | |
16525 | case R_PPC64_UADDR32: | |
16526 | case R_PPC64_UADDR64: | |
5663e321 AM |
16527 | case R_PPC64_D34: |
16528 | case R_PPC64_D34_LO: | |
16529 | case R_PPC64_D34_HI30: | |
16530 | case R_PPC64_D34_HA30: | |
16531 | case R_PPC64_D28: | |
411e1bfb | 16532 | dodyn: |
5d1634d7 | 16533 | if ((input_section->flags & SEC_ALLOC) == 0) |
ec338859 AM |
16534 | break; |
16535 | ||
41bd81ab AM |
16536 | if (NO_OPD_RELOCS && is_opd) |
16537 | break; | |
16538 | ||
8a9e8e72 | 16539 | if (bfd_link_pic (info) |
b1b07054 | 16540 | ? ((h == NULL |
190eb1dd | 16541 | || h->elf.dyn_relocs != NULL) |
b1b07054 AM |
16542 | && ((h != NULL && pc_dynrelocs (h)) |
16543 | || must_be_dyn_reloc (info, r_type))) | |
8a9e8e72 | 16544 | : (h != NULL |
190eb1dd | 16545 | ? h->elf.dyn_relocs != NULL |
d311bc8b | 16546 | : ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC)) |
65f38f15 | 16547 | { |
b34976b6 | 16548 | bfd_boolean skip, relocate; |
65f38f15 | 16549 | asection *sreloc; |
1cf1f670 | 16550 | bfd_vma out_off; |
82e66161 | 16551 | long indx = 0; |
65f38f15 AM |
16552 | |
16553 | /* When generating a dynamic object, these relocations | |
16554 | are copied into the output file to be resolved at run | |
16555 | time. */ | |
16556 | ||
b34976b6 AM |
16557 | skip = FALSE; |
16558 | relocate = FALSE; | |
65f38f15 | 16559 | |
1cf1f670 AM |
16560 | out_off = _bfd_elf_section_offset (output_bfd, info, |
16561 | input_section, rel->r_offset); | |
16562 | if (out_off == (bfd_vma) -1) | |
b34976b6 | 16563 | skip = TRUE; |
1cf1f670 | 16564 | else if (out_off == (bfd_vma) -2) |
b34976b6 | 16565 | skip = TRUE, relocate = TRUE; |
1cf1f670 AM |
16566 | out_off += (input_section->output_section->vma |
16567 | + input_section->output_offset); | |
16568 | outrel.r_offset = out_off; | |
411e1bfb | 16569 | outrel.r_addend = rel->r_addend; |
65f38f15 | 16570 | |
1cf1f670 AM |
16571 | /* Optimize unaligned reloc use. */ |
16572 | if ((r_type == R_PPC64_ADDR64 && (out_off & 7) != 0) | |
16573 | || (r_type == R_PPC64_UADDR64 && (out_off & 7) == 0)) | |
16574 | r_type ^= R_PPC64_ADDR64 ^ R_PPC64_UADDR64; | |
16575 | else if ((r_type == R_PPC64_ADDR32 && (out_off & 3) != 0) | |
16576 | || (r_type == R_PPC64_UADDR32 && (out_off & 3) == 0)) | |
16577 | r_type ^= R_PPC64_ADDR32 ^ R_PPC64_UADDR32; | |
16578 | else if ((r_type == R_PPC64_ADDR16 && (out_off & 1) != 0) | |
16579 | || (r_type == R_PPC64_UADDR16 && (out_off & 1) == 0)) | |
16580 | r_type ^= R_PPC64_ADDR16 ^ R_PPC64_UADDR16; | |
16581 | ||
65f38f15 | 16582 | if (skip) |
0bb2d96a | 16583 | memset (&outrel, 0, sizeof outrel); |
afe397ea | 16584 | else if (!SYMBOL_REFERENCES_LOCAL (info, &h->elf) |
0b13192e AM |
16585 | && !is_opd |
16586 | && r_type != R_PPC64_TOC) | |
14acf4dc | 16587 | { |
82e66161 AM |
16588 | indx = h->elf.dynindx; |
16589 | BFD_ASSERT (indx != -1); | |
16590 | outrel.r_info = ELF64_R_INFO (indx, r_type); | |
14acf4dc | 16591 | } |
65f38f15 AM |
16592 | else |
16593 | { | |
41bd81ab AM |
16594 | /* This symbol is local, or marked to become local, |
16595 | or this is an opd section reloc which must point | |
16596 | at a local function. */ | |
65f38f15 | 16597 | outrel.r_addend += relocation; |
e86ce104 | 16598 | if (r_type == R_PPC64_ADDR64 || r_type == R_PPC64_TOC) |
65f38f15 | 16599 | { |
3fad3c7c | 16600 | if (is_opd && h != NULL) |
afbe61cf AM |
16601 | { |
16602 | /* Lie about opd entries. This case occurs | |
16603 | when building shared libraries and we | |
16604 | reference a function in another shared | |
3fad3c7c AM |
16605 | lib. The same thing happens for a weak |
16606 | definition in an application that's | |
16607 | overridden by a strong definition in a | |
16608 | shared lib. (I believe this is a generic | |
16609 | bug in binutils handling of weak syms.) | |
16610 | In these cases we won't use the opd | |
1e2f5b6e | 16611 | entry in this lib. */ |
b34976b6 | 16612 | unresolved_reloc = FALSE; |
afbe61cf | 16613 | } |
25f23106 AM |
16614 | if (!is_opd |
16615 | && r_type == R_PPC64_ADDR64 | |
16616 | && (h != NULL | |
16617 | ? h->elf.type == STT_GNU_IFUNC | |
16618 | : ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC)) | |
16619 | outrel.r_info = ELF64_R_INFO (0, R_PPC64_IRELATIVE); | |
16620 | else | |
16621 | { | |
16622 | outrel.r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE); | |
81407a69 | 16623 | |
25f23106 AM |
16624 | /* We need to relocate .opd contents for ld.so. |
16625 | Prelink also wants simple and consistent rules | |
16626 | for relocs. This make all RELATIVE relocs have | |
16627 | *r_offset equal to r_addend. */ | |
16628 | relocate = TRUE; | |
16629 | } | |
65f38f15 AM |
16630 | } |
16631 | else | |
16632 | { | |
25f23106 AM |
16633 | if (h != NULL |
16634 | ? h->elf.type == STT_GNU_IFUNC | |
16635 | : ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC) | |
16636 | { | |
25f53a85 | 16637 | info->callbacks->einfo |
695344c0 | 16638 | /* xgettext:c-format */ |
174d0a74 | 16639 | (_("%H: %s for indirect " |
c1c8c1ef | 16640 | "function `%pT' unsupported\n"), |
25f53a85 | 16641 | input_bfd, input_section, rel->r_offset, |
25f23106 AM |
16642 | ppc64_elf_howto_table[r_type]->name, |
16643 | sym_name); | |
16644 | ret = FALSE; | |
16645 | } | |
cf35638d | 16646 | else if (r_symndx == STN_UNDEF || bfd_is_abs_section (sec)) |
65f38f15 AM |
16647 | ; |
16648 | else if (sec == NULL || sec->owner == NULL) | |
16649 | { | |
16650 | bfd_set_error (bfd_error_bad_value); | |
b34976b6 | 16651 | return FALSE; |
65f38f15 AM |
16652 | } |
16653 | else | |
16654 | { | |
f26a3287 | 16655 | asection *osec = sec->output_section; |
65f38f15 | 16656 | |
f26a3287 AM |
16657 | if ((osec->flags & SEC_THREAD_LOCAL) != 0) |
16658 | { | |
16659 | /* TLS symbol values are relative to the | |
16660 | TLS segment. Dynamic relocations for | |
16661 | local TLS symbols therefore can't be | |
16662 | reduced to a relocation against their | |
16663 | section symbol because it holds the | |
16664 | address of the section, not a value | |
16665 | relative to the TLS segment. We could | |
16666 | change the .tdata dynamic section symbol | |
16667 | to be zero value but STN_UNDEF works | |
16668 | and is used elsewhere, eg. for TPREL64 | |
16669 | GOT relocs against local TLS symbols. */ | |
16670 | osec = htab->elf.tls_sec; | |
16671 | indx = 0; | |
16672 | } | |
16673 | else | |
74541ad4 | 16674 | { |
74541ad4 | 16675 | indx = elf_section_data (osec)->dynindx; |
f26a3287 AM |
16676 | if (indx == 0) |
16677 | { | |
16678 | if ((osec->flags & SEC_READONLY) == 0 | |
16679 | && htab->elf.data_index_section != NULL) | |
16680 | osec = htab->elf.data_index_section; | |
16681 | else | |
16682 | osec = htab->elf.text_index_section; | |
16683 | indx = elf_section_data (osec)->dynindx; | |
16684 | } | |
16685 | BFD_ASSERT (indx != 0); | |
74541ad4 | 16686 | } |
74541ad4 | 16687 | |
65f38f15 AM |
16688 | /* We are turning this relocation into one |
16689 | against a section symbol, so subtract out | |
16690 | the output section's address but not the | |
16691 | offset of the input section in the output | |
16692 | section. */ | |
16693 | outrel.r_addend -= osec->vma; | |
16694 | } | |
16695 | ||
16696 | outrel.r_info = ELF64_R_INFO (indx, r_type); | |
16697 | } | |
16698 | } | |
16699 | ||
16700 | sreloc = elf_section_data (input_section)->sreloc; | |
19e08130 AM |
16701 | if (h != NULL |
16702 | ? h->elf.type == STT_GNU_IFUNC | |
16703 | : ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC) | |
82e66161 AM |
16704 | { |
16705 | sreloc = htab->elf.irelplt; | |
efb2a7b4 | 16706 | if (indx == 0 || is_static_defined (&h->elf)) |
cebd6b8a | 16707 | htab->elf.ifunc_resolvers = TRUE; |
82e66161 | 16708 | } |
65f38f15 AM |
16709 | if (sreloc == NULL) |
16710 | abort (); | |
16711 | ||
dfbb6ac9 AM |
16712 | if (sreloc->reloc_count * sizeof (Elf64_External_Rela) |
16713 | >= sreloc->size) | |
16714 | abort (); | |
947216bf AM |
16715 | loc = sreloc->contents; |
16716 | loc += sreloc->reloc_count++ * sizeof (Elf64_External_Rela); | |
65f38f15 AM |
16717 | bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc); |
16718 | ||
e59a1001 AM |
16719 | if (!warned_dynamic |
16720 | && !ppc64_glibc_dynamic_reloc (ELF64_R_TYPE (outrel.r_info))) | |
16721 | { | |
16722 | info->callbacks->einfo | |
16723 | /* xgettext:c-format */ | |
16724 | (_("%X%P: %pB: %s against %pT " | |
16725 | "is not supported by glibc as a dynamic relocation\n"), | |
16726 | input_bfd, | |
16727 | ppc64_elf_howto_table[ELF64_R_TYPE (outrel.r_info)]->name, | |
16728 | sym_name); | |
16729 | warned_dynamic = TRUE; | |
16730 | } | |
16731 | ||
65f38f15 AM |
16732 | /* If this reloc is against an external symbol, it will |
16733 | be computed at runtime, so there's no need to do | |
81407a69 AM |
16734 | anything now. However, for the sake of prelink ensure |
16735 | that the section contents are a known value. */ | |
2cdcc330 | 16736 | if (!relocate) |
81407a69 AM |
16737 | { |
16738 | unresolved_reloc = FALSE; | |
16739 | /* The value chosen here is quite arbitrary as ld.so | |
16740 | ignores section contents except for the special | |
16741 | case of .opd where the contents might be accessed | |
16742 | before relocation. Choose zero, as that won't | |
16743 | cause reloc overflow. */ | |
16744 | relocation = 0; | |
16745 | addend = 0; | |
16746 | /* Use *r_offset == r_addend for R_PPC64_ADDR64 relocs | |
16747 | to improve backward compatibility with older | |
16748 | versions of ld. */ | |
16749 | if (r_type == R_PPC64_ADDR64) | |
16750 | addend = outrel.r_addend; | |
16751 | /* Adjust pc_relative relocs to have zero in *r_offset. */ | |
4ce794b7 | 16752 | else if (ppc64_elf_howto_table[r_type]->pc_relative) |
f0158f44 | 16753 | addend = outrel.r_offset; |
81407a69 | 16754 | } |
65f38f15 | 16755 | } |
5bd4f169 AM |
16756 | break; |
16757 | ||
65f38f15 AM |
16758 | case R_PPC64_COPY: |
16759 | case R_PPC64_GLOB_DAT: | |
16760 | case R_PPC64_JMP_SLOT: | |
25f23106 | 16761 | case R_PPC64_JMP_IREL: |
65f38f15 AM |
16762 | case R_PPC64_RELATIVE: |
16763 | /* We shouldn't ever see these dynamic relocs in relocatable | |
16764 | files. */ | |
ae9a127f | 16765 | /* Fall through. */ |
65f38f15 AM |
16766 | |
16767 | case R_PPC64_PLTGOT16: | |
16768 | case R_PPC64_PLTGOT16_DS: | |
16769 | case R_PPC64_PLTGOT16_HA: | |
16770 | case R_PPC64_PLTGOT16_HI: | |
16771 | case R_PPC64_PLTGOT16_LO: | |
16772 | case R_PPC64_PLTGOT16_LO_DS: | |
16773 | case R_PPC64_PLTREL32: | |
16774 | case R_PPC64_PLTREL64: | |
16775 | /* These ones haven't been implemented yet. */ | |
16776 | ||
25f53a85 | 16777 | info->callbacks->einfo |
695344c0 | 16778 | /* xgettext:c-format */ |
c1c8c1ef | 16779 | (_("%P: %pB: %s is not supported for `%pT'\n"), |
d003868e | 16780 | input_bfd, |
4ce794b7 | 16781 | ppc64_elf_howto_table[r_type]->name, sym_name); |
5bd4f169 AM |
16782 | |
16783 | bfd_set_error (bfd_error_invalid_operation); | |
b34976b6 | 16784 | ret = FALSE; |
c316a17c | 16785 | goto copy_reloc; |
65f38f15 | 16786 | } |
5bd4f169 | 16787 | |
67f0cbdb AM |
16788 | /* Multi-instruction sequences that access the TOC can be |
16789 | optimized, eg. addis ra,r2,0; addi rb,ra,x; | |
07d6d2b8 | 16790 | to nop; addi rb,r2,x; */ |
67f0cbdb AM |
16791 | switch (r_type) |
16792 | { | |
16793 | default: | |
16794 | break; | |
16795 | ||
16796 | case R_PPC64_GOT_TLSLD16_HI: | |
16797 | case R_PPC64_GOT_TLSGD16_HI: | |
16798 | case R_PPC64_GOT_TPREL16_HI: | |
16799 | case R_PPC64_GOT_DTPREL16_HI: | |
16800 | case R_PPC64_GOT16_HI: | |
16801 | case R_PPC64_TOC16_HI: | |
16802 | /* These relocs would only be useful if building up an | |
16803 | offset to later add to r2, perhaps in an indexed | |
16804 | addressing mode instruction. Don't try to optimize. | |
16805 | Unfortunately, the possibility of someone building up an | |
16806 | offset like this or even with the HA relocs, means that | |
16807 | we need to check the high insn when optimizing the low | |
16808 | insn. */ | |
16809 | break; | |
16810 | ||
5663e321 AM |
16811 | case R_PPC64_PLTCALL_NOTOC: |
16812 | if (!unresolved_reloc) | |
16813 | htab->notoc_plt = 1; | |
16814 | /* Fall through. */ | |
23cedd1d AM |
16815 | case R_PPC64_PLTCALL: |
16816 | if (unresolved_reloc) | |
16817 | { | |
16818 | /* No plt entry. Make this into a direct call. */ | |
16819 | bfd_byte *p = contents + rel->r_offset; | |
16820 | insn = bfd_get_32 (input_bfd, p); | |
16821 | insn &= 1; | |
16822 | bfd_put_32 (input_bfd, B_DOT | insn, p); | |
5663e321 AM |
16823 | if (r_type == R_PPC64_PLTCALL) |
16824 | bfd_put_32 (input_bfd, NOP, p + 4); | |
23cedd1d AM |
16825 | unresolved_reloc = save_unresolved_reloc; |
16826 | r_type = R_PPC64_REL24; | |
16827 | } | |
16828 | break; | |
16829 | ||
5663e321 | 16830 | case R_PPC64_PLTSEQ_NOTOC: |
23cedd1d AM |
16831 | case R_PPC64_PLTSEQ: |
16832 | if (unresolved_reloc) | |
16833 | { | |
16834 | unresolved_reloc = FALSE; | |
16835 | goto nop_it; | |
16836 | } | |
16837 | break; | |
16838 | ||
5663e321 AM |
16839 | case R_PPC64_PLT_PCREL34_NOTOC: |
16840 | if (!unresolved_reloc) | |
16841 | htab->notoc_plt = 1; | |
16842 | /* Fall through. */ | |
16843 | case R_PPC64_PLT_PCREL34: | |
16844 | if (unresolved_reloc) | |
16845 | { | |
16846 | bfd_byte *p = contents + rel->r_offset; | |
16847 | bfd_put_32 (input_bfd, PNOP >> 32, p); | |
16848 | bfd_put_32 (input_bfd, PNOP, p + 4); | |
16849 | unresolved_reloc = FALSE; | |
16850 | goto copy_reloc; | |
16851 | } | |
16852 | break; | |
16853 | ||
23cedd1d AM |
16854 | case R_PPC64_PLT16_HA: |
16855 | if (unresolved_reloc) | |
16856 | { | |
16857 | unresolved_reloc = FALSE; | |
16858 | goto nop_it; | |
16859 | } | |
16860 | /* Fall through. */ | |
67f0cbdb AM |
16861 | case R_PPC64_GOT_TLSLD16_HA: |
16862 | case R_PPC64_GOT_TLSGD16_HA: | |
16863 | case R_PPC64_GOT_TPREL16_HA: | |
16864 | case R_PPC64_GOT_DTPREL16_HA: | |
16865 | case R_PPC64_GOT16_HA: | |
16866 | case R_PPC64_TOC16_HA: | |
98528052 | 16867 | if (htab->do_toc_opt && relocation + addend + 0x8000 < 0x10000 |
560c8763 | 16868 | && !ppc64_elf_tdata (input_bfd)->unexpected_toc_insn) |
98528052 | 16869 | { |
23cedd1d AM |
16870 | bfd_byte *p; |
16871 | nop_it: | |
16872 | p = contents + (rel->r_offset & ~3); | |
98528052 | 16873 | bfd_put_32 (input_bfd, NOP, p); |
d830549d | 16874 | goto copy_reloc; |
98528052 | 16875 | } |
67f0cbdb AM |
16876 | break; |
16877 | ||
23cedd1d AM |
16878 | case R_PPC64_PLT16_LO: |
16879 | case R_PPC64_PLT16_LO_DS: | |
16880 | if (unresolved_reloc) | |
16881 | { | |
16882 | unresolved_reloc = FALSE; | |
16883 | goto nop_it; | |
16884 | } | |
16885 | /* Fall through. */ | |
67f0cbdb AM |
16886 | case R_PPC64_GOT_TLSLD16_LO: |
16887 | case R_PPC64_GOT_TLSGD16_LO: | |
16888 | case R_PPC64_GOT_TPREL16_LO_DS: | |
16889 | case R_PPC64_GOT_DTPREL16_LO_DS: | |
16890 | case R_PPC64_GOT16_LO: | |
16891 | case R_PPC64_GOT16_LO_DS: | |
16892 | case R_PPC64_TOC16_LO: | |
16893 | case R_PPC64_TOC16_LO_DS: | |
98528052 | 16894 | if (htab->do_toc_opt && relocation + addend + 0x8000 < 0x10000 |
560c8763 | 16895 | && !ppc64_elf_tdata (input_bfd)->unexpected_toc_insn) |
67f0cbdb AM |
16896 | { |
16897 | bfd_byte *p = contents + (rel->r_offset & ~3); | |
16898 | insn = bfd_get_32 (input_bfd, p); | |
2365f8d7 | 16899 | if ((insn & (0x3fu << 26)) == 12u << 26 /* addic */) |
560c8763 AM |
16900 | { |
16901 | /* Transform addic to addi when we change reg. */ | |
2365f8d7 | 16902 | insn &= ~((0x3fu << 26) | (0x1f << 16)); |
560c8763 AM |
16903 | insn |= (14u << 26) | (2 << 16); |
16904 | } | |
16905 | else | |
67f0cbdb | 16906 | { |
98528052 AM |
16907 | insn &= ~(0x1f << 16); |
16908 | insn |= 2 << 16; | |
67f0cbdb | 16909 | } |
560c8763 | 16910 | bfd_put_32 (input_bfd, insn, p); |
67f0cbdb AM |
16911 | } |
16912 | break; | |
9a23f96e AM |
16913 | |
16914 | case R_PPC64_TPREL16_HA: | |
16915 | if (htab->do_tls_opt && relocation + addend + 0x8000 < 0x10000) | |
16916 | { | |
16917 | bfd_byte *p = contents + (rel->r_offset & ~3); | |
16918 | insn = bfd_get_32 (input_bfd, p); | |
2365f8d7 | 16919 | if ((insn & ((0x3fu << 26) | 0x1f << 16)) |
9a23f96e AM |
16920 | != ((15u << 26) | (13 << 16)) /* addis rt,13,imm */) |
16921 | /* xgettext:c-format */ | |
16922 | info->callbacks->minfo | |
16923 | (_("%H: warning: %s unexpected insn %#x.\n"), | |
d830549d AM |
16924 | input_bfd, input_section, rel->r_offset, |
16925 | ppc64_elf_howto_table[r_type]->name, insn); | |
9a23f96e | 16926 | else |
d830549d AM |
16927 | { |
16928 | bfd_put_32 (input_bfd, NOP, p); | |
16929 | goto copy_reloc; | |
16930 | } | |
9a23f96e AM |
16931 | } |
16932 | break; | |
16933 | ||
16934 | case R_PPC64_TPREL16_LO: | |
16935 | case R_PPC64_TPREL16_LO_DS: | |
16936 | if (htab->do_tls_opt && relocation + addend + 0x8000 < 0x10000) | |
16937 | { | |
16938 | bfd_byte *p = contents + (rel->r_offset & ~3); | |
16939 | insn = bfd_get_32 (input_bfd, p); | |
16940 | insn &= ~(0x1f << 16); | |
16941 | insn |= 13 << 16; | |
16942 | bfd_put_32 (input_bfd, insn, p); | |
16943 | } | |
16944 | break; | |
67f0cbdb AM |
16945 | } |
16946 | ||
65f38f15 AM |
16947 | /* Do any further special processing. */ |
16948 | switch (r_type) | |
16949 | { | |
16950 | default: | |
16951 | break; | |
16952 | ||
25f23106 | 16953 | case R_PPC64_REL16_HA: |
4a969973 AM |
16954 | case R_PPC64_REL16_HIGHA: |
16955 | case R_PPC64_REL16_HIGHERA: | |
16956 | case R_PPC64_REL16_HIGHESTA: | |
a680de9a | 16957 | case R_PPC64_REL16DX_HA: |
f9c6b907 AM |
16958 | case R_PPC64_ADDR16_HA: |
16959 | case R_PPC64_ADDR16_HIGHA: | |
65f38f15 AM |
16960 | case R_PPC64_ADDR16_HIGHERA: |
16961 | case R_PPC64_ADDR16_HIGHESTA: | |
65f38f15 AM |
16962 | case R_PPC64_TOC16_HA: |
16963 | case R_PPC64_SECTOFF_HA: | |
411e1bfb | 16964 | case R_PPC64_TPREL16_HA: |
f9c6b907 | 16965 | case R_PPC64_TPREL16_HIGHA: |
411e1bfb | 16966 | case R_PPC64_TPREL16_HIGHERA: |
411e1bfb | 16967 | case R_PPC64_TPREL16_HIGHESTA: |
f9c6b907 AM |
16968 | case R_PPC64_DTPREL16_HA: |
16969 | case R_PPC64_DTPREL16_HIGHA: | |
411e1bfb | 16970 | case R_PPC64_DTPREL16_HIGHERA: |
411e1bfb | 16971 | case R_PPC64_DTPREL16_HIGHESTA: |
65f38f15 AM |
16972 | /* It's just possible that this symbol is a weak symbol |
16973 | that's not actually defined anywhere. In that case, | |
16974 | 'sec' would be NULL, and we should leave the symbol | |
16975 | alone (it will be set to zero elsewhere in the link). */ | |
5c5f6e17 AM |
16976 | if (sec == NULL) |
16977 | break; | |
1a0670f3 | 16978 | /* Fall through. */ |
5c5f6e17 AM |
16979 | |
16980 | case R_PPC64_GOT16_HA: | |
16981 | case R_PPC64_PLTGOT16_HA: | |
16982 | case R_PPC64_PLT16_HA: | |
16983 | case R_PPC64_GOT_TLSGD16_HA: | |
16984 | case R_PPC64_GOT_TLSLD16_HA: | |
16985 | case R_PPC64_GOT_TPREL16_HA: | |
16986 | case R_PPC64_GOT_DTPREL16_HA: | |
16987 | /* Add 0x10000 if sign bit in 0:15 is set. | |
16988 | Bits 0:15 are not used. */ | |
16989 | addend += 0x8000; | |
65f38f15 AM |
16990 | break; |
16991 | ||
5663e321 AM |
16992 | case R_PPC64_D34_HA30: |
16993 | case R_PPC64_ADDR16_HIGHERA34: | |
16994 | case R_PPC64_ADDR16_HIGHESTA34: | |
16995 | case R_PPC64_REL16_HIGHERA34: | |
16996 | case R_PPC64_REL16_HIGHESTA34: | |
16997 | if (sec != NULL) | |
16998 | addend += 1ULL << 33; | |
16999 | break; | |
17000 | ||
65f38f15 AM |
17001 | case R_PPC64_ADDR16_DS: |
17002 | case R_PPC64_ADDR16_LO_DS: | |
17003 | case R_PPC64_GOT16_DS: | |
17004 | case R_PPC64_GOT16_LO_DS: | |
17005 | case R_PPC64_PLT16_LO_DS: | |
17006 | case R_PPC64_SECTOFF_DS: | |
17007 | case R_PPC64_SECTOFF_LO_DS: | |
17008 | case R_PPC64_TOC16_DS: | |
17009 | case R_PPC64_TOC16_LO_DS: | |
17010 | case R_PPC64_PLTGOT16_DS: | |
17011 | case R_PPC64_PLTGOT16_LO_DS: | |
411e1bfb AM |
17012 | case R_PPC64_GOT_TPREL16_DS: |
17013 | case R_PPC64_GOT_TPREL16_LO_DS: | |
17014 | case R_PPC64_GOT_DTPREL16_DS: | |
17015 | case R_PPC64_GOT_DTPREL16_LO_DS: | |
17016 | case R_PPC64_TPREL16_DS: | |
17017 | case R_PPC64_TPREL16_LO_DS: | |
17018 | case R_PPC64_DTPREL16_DS: | |
17019 | case R_PPC64_DTPREL16_LO_DS: | |
adadcc0c AM |
17020 | insn = bfd_get_32 (input_bfd, contents + (rel->r_offset & ~3)); |
17021 | mask = 3; | |
a680de9a PB |
17022 | /* If this reloc is against an lq, lxv, or stxv insn, then |
17023 | the value must be a multiple of 16. This is somewhat of | |
17024 | a hack, but the "correct" way to do this by defining _DQ | |
17025 | forms of all the _DS relocs bloats all reloc switches in | |
17026 | this file. It doesn't make much sense to use these | |
17027 | relocs in data, so testing the insn should be safe. */ | |
2365f8d7 AM |
17028 | if ((insn & (0x3fu << 26)) == (56u << 26) |
17029 | || ((insn & (0x3fu << 26)) == (61u << 26) && (insn & 3) == 1)) | |
adadcc0c | 17030 | mask = 15; |
a680de9a PB |
17031 | relocation += addend; |
17032 | addend = insn & (mask ^ 3); | |
17033 | if ((relocation & mask) != 0) | |
65f38f15 | 17034 | { |
a680de9a | 17035 | relocation ^= relocation & mask; |
25f53a85 | 17036 | info->callbacks->einfo |
695344c0 | 17037 | /* xgettext:c-format */ |
174d0a74 | 17038 | (_("%H: error: %s not a multiple of %u\n"), |
25f53a85 | 17039 | input_bfd, input_section, rel->r_offset, |
d830549d | 17040 | ppc64_elf_howto_table[r_type]->name, |
adadcc0c | 17041 | mask + 1); |
65f38f15 | 17042 | bfd_set_error (bfd_error_bad_value); |
b34976b6 | 17043 | ret = FALSE; |
c316a17c | 17044 | goto copy_reloc; |
65f38f15 AM |
17045 | } |
17046 | break; | |
5bd4f169 AM |
17047 | } |
17048 | ||
239e1f3a AM |
17049 | /* Dynamic relocs are not propagated for SEC_DEBUGGING sections |
17050 | because such sections are not SEC_ALLOC and thus ld.so will | |
17051 | not process them. */ | |
d830549d | 17052 | howto = ppc64_elf_howto_table[(int) r_type]; |
65f38f15 | 17053 | if (unresolved_reloc |
239e1f3a | 17054 | && !((input_section->flags & SEC_DEBUGGING) != 0 |
1d5316ab AM |
17055 | && h->elf.def_dynamic) |
17056 | && _bfd_elf_section_offset (output_bfd, info, input_section, | |
17057 | rel->r_offset) != (bfd_vma) -1) | |
9c07fe7c | 17058 | { |
25f53a85 | 17059 | info->callbacks->einfo |
695344c0 | 17060 | /* xgettext:c-format */ |
c1c8c1ef | 17061 | (_("%H: unresolvable %s against `%pT'\n"), |
25f53a85 | 17062 | input_bfd, input_section, rel->r_offset, |
b80eed39 | 17063 | howto->name, |
039b3fef | 17064 | h->elf.root.root.string); |
b34976b6 | 17065 | ret = FALSE; |
9c07fe7c | 17066 | } |
5bd4f169 | 17067 | |
b80eed39 AM |
17068 | /* 16-bit fields in insns mostly have signed values, but a |
17069 | few insns have 16-bit unsigned values. Really, we should | |
17070 | have different reloc types. */ | |
17071 | if (howto->complain_on_overflow != complain_overflow_dont | |
17072 | && howto->dst_mask == 0xffff | |
17073 | && (input_section->flags & SEC_CODE) != 0) | |
17074 | { | |
17075 | enum complain_overflow complain = complain_overflow_signed; | |
17076 | ||
17077 | insn = bfd_get_32 (input_bfd, contents + (rel->r_offset & ~3)); | |
2365f8d7 | 17078 | if ((insn & (0x3fu << 26)) == 10u << 26 /* cmpli */) |
a47622ac AM |
17079 | complain = complain_overflow_bitfield; |
17080 | else if (howto->rightshift == 0 | |
2365f8d7 AM |
17081 | ? ((insn & (0x3fu << 26)) == 28u << 26 /* andi */ |
17082 | || (insn & (0x3fu << 26)) == 24u << 26 /* ori */ | |
17083 | || (insn & (0x3fu << 26)) == 26u << 26 /* xori */) | |
17084 | : ((insn & (0x3fu << 26)) == 29u << 26 /* andis */ | |
17085 | || (insn & (0x3fu << 26)) == 25u << 26 /* oris */ | |
17086 | || (insn & (0x3fu << 26)) == 27u << 26 /* xoris */)) | |
b80eed39 AM |
17087 | complain = complain_overflow_unsigned; |
17088 | if (howto->complain_on_overflow != complain) | |
17089 | { | |
17090 | alt_howto = *howto; | |
17091 | alt_howto.complain_on_overflow = complain; | |
17092 | howto = &alt_howto; | |
17093 | } | |
17094 | } | |
17095 | ||
5663e321 | 17096 | switch (r_type) |
a680de9a | 17097 | { |
5663e321 AM |
17098 | /* Split field relocs aren't handled by _bfd_final_link_relocate. */ |
17099 | case R_PPC64_D34: | |
17100 | case R_PPC64_D34_LO: | |
17101 | case R_PPC64_D34_HI30: | |
17102 | case R_PPC64_D34_HA30: | |
17103 | case R_PPC64_PCREL34: | |
17104 | case R_PPC64_GOT_PCREL34: | |
c213164a AM |
17105 | case R_PPC64_TPREL34: |
17106 | case R_PPC64_DTPREL34: | |
87c69f97 AM |
17107 | case R_PPC64_GOT_TLSGD_PCREL34: |
17108 | case R_PPC64_GOT_TLSLD_PCREL34: | |
17109 | case R_PPC64_GOT_TPREL_PCREL34: | |
17110 | case R_PPC64_GOT_DTPREL_PCREL34: | |
5663e321 AM |
17111 | case R_PPC64_PLT_PCREL34: |
17112 | case R_PPC64_PLT_PCREL34_NOTOC: | |
17113 | case R_PPC64_D28: | |
17114 | case R_PPC64_PCREL28: | |
17115 | if (rel->r_offset + 8 > input_section->size) | |
17116 | r = bfd_reloc_outofrange; | |
17117 | else | |
17118 | { | |
5663e321 AM |
17119 | relocation += addend; |
17120 | if (howto->pc_relative) | |
17121 | relocation -= (rel->r_offset | |
17122 | + input_section->output_offset | |
17123 | + input_section->output_section->vma); | |
17124 | relocation >>= howto->rightshift; | |
17125 | ||
17126 | pinsn = bfd_get_32 (input_bfd, contents + rel->r_offset); | |
17127 | pinsn <<= 32; | |
17128 | pinsn |= bfd_get_32 (input_bfd, contents + rel->r_offset + 4); | |
17129 | ||
17130 | pinsn &= ~howto->dst_mask; | |
17131 | pinsn |= (((relocation << 16) | (relocation & 0xffff)) | |
17132 | & howto->dst_mask); | |
17133 | bfd_put_32 (input_bfd, pinsn >> 32, contents + rel->r_offset); | |
17134 | bfd_put_32 (input_bfd, pinsn, contents + rel->r_offset + 4); | |
17135 | r = bfd_reloc_ok; | |
17136 | if (howto->complain_on_overflow == complain_overflow_signed | |
17137 | && (relocation + (1ULL << (howto->bitsize - 1)) | |
17138 | >= 1ULL << howto->bitsize)) | |
17139 | r = bfd_reloc_overflow; | |
17140 | } | |
17141 | break; | |
17142 | ||
17143 | case R_PPC64_REL16DX_HA: | |
a680de9a PB |
17144 | if (rel->r_offset + 4 > input_section->size) |
17145 | r = bfd_reloc_outofrange; | |
17146 | else | |
17147 | { | |
17148 | relocation += addend; | |
17149 | relocation -= (rel->r_offset | |
17150 | + input_section->output_offset | |
17151 | + input_section->output_section->vma); | |
3de43e7b | 17152 | relocation = (bfd_signed_vma) relocation >> 16; |
a680de9a PB |
17153 | insn = bfd_get_32 (input_bfd, contents + rel->r_offset); |
17154 | insn &= ~0x1fffc1; | |
3de43e7b | 17155 | insn |= (relocation & 0xffc1) | ((relocation & 0x3e) << 15); |
a680de9a PB |
17156 | bfd_put_32 (input_bfd, insn, contents + rel->r_offset); |
17157 | r = bfd_reloc_ok; | |
3de43e7b | 17158 | if (relocation + 0x8000 > 0xffff) |
a680de9a PB |
17159 | r = bfd_reloc_overflow; |
17160 | } | |
5663e321 AM |
17161 | break; |
17162 | ||
17163 | default: | |
17164 | r = _bfd_final_link_relocate (howto, input_bfd, input_section, | |
17165 | contents, rel->r_offset, | |
17166 | relocation, addend); | |
a680de9a | 17167 | } |
5bd4f169 | 17168 | |
ef60b7ff | 17169 | if (r != bfd_reloc_ok) |
5bd4f169 | 17170 | { |
bc30df16 | 17171 | char *more_info = NULL; |
b80eed39 | 17172 | const char *reloc_name = howto->name; |
bc30df16 AM |
17173 | |
17174 | if (reloc_dest != DEST_NORMAL) | |
17175 | { | |
17176 | more_info = bfd_malloc (strlen (reloc_name) + 8); | |
17177 | if (more_info != NULL) | |
17178 | { | |
17179 | strcpy (more_info, reloc_name); | |
17180 | strcat (more_info, (reloc_dest == DEST_OPD | |
17181 | ? " (OPD)" : " (stub)")); | |
17182 | reloc_name = more_info; | |
17183 | } | |
17184 | } | |
17185 | ||
cd27b276 | 17186 | if (r == bfd_reloc_overflow) |
5bd4f169 | 17187 | { |
8131c122 AM |
17188 | /* On code like "if (foo) foo();" don't report overflow |
17189 | on a branch to zero when foo is undefined. */ | |
17190 | if (!warned | |
17191 | && (reloc_dest == DEST_STUB | |
17192 | || !(h != NULL | |
17193 | && (h->elf.root.type == bfd_link_hash_undefweak | |
17194 | || h->elf.root.type == bfd_link_hash_undefined) | |
17195 | && is_branch_reloc (r_type)))) | |
1a72702b AM |
17196 | info->callbacks->reloc_overflow (info, &h->elf.root, |
17197 | sym_name, reloc_name, | |
17198 | orig_rel.r_addend, | |
17199 | input_bfd, input_section, | |
17200 | rel->r_offset); | |
ef60b7ff AM |
17201 | } |
17202 | else | |
17203 | { | |
25f53a85 | 17204 | info->callbacks->einfo |
695344c0 | 17205 | /* xgettext:c-format */ |
c1c8c1ef | 17206 | (_("%H: %s against `%pT': error %d\n"), |
25f53a85 | 17207 | input_bfd, input_section, rel->r_offset, |
bc30df16 | 17208 | reloc_name, sym_name, (int) r); |
b34976b6 | 17209 | ret = FALSE; |
ef60b7ff | 17210 | } |
c9594989 | 17211 | free (more_info); |
5bd4f169 | 17212 | } |
c316a17c AM |
17213 | copy_reloc: |
17214 | if (wrel != rel) | |
17215 | *wrel = *rel; | |
17216 | } | |
17217 | ||
17218 | if (wrel != rel) | |
17219 | { | |
17220 | Elf_Internal_Shdr *rel_hdr; | |
17221 | size_t deleted = rel - wrel; | |
17222 | ||
17223 | rel_hdr = _bfd_elf_single_rel_hdr (input_section->output_section); | |
17224 | rel_hdr->sh_size -= rel_hdr->sh_entsize * deleted; | |
17225 | if (rel_hdr->sh_size == 0) | |
17226 | { | |
17227 | /* It is too late to remove an empty reloc section. Leave | |
17228 | one NONE reloc. | |
17229 | ??? What is wrong with an empty section??? */ | |
17230 | rel_hdr->sh_size = rel_hdr->sh_entsize; | |
17231 | deleted -= 1; | |
17232 | } | |
17233 | rel_hdr = _bfd_elf_single_rel_hdr (input_section); | |
17234 | rel_hdr->sh_size -= rel_hdr->sh_entsize * deleted; | |
17235 | input_section->reloc_count -= deleted; | |
5bd4f169 AM |
17236 | } |
17237 | ||
645ea6a9 AM |
17238 | /* If we're emitting relocations, then shortly after this function |
17239 | returns, reloc offsets and addends for this section will be | |
17240 | adjusted. Worse, reloc symbol indices will be for the output | |
8860955f AM |
17241 | file rather than the input. Save a copy of the relocs for |
17242 | opd_entry_value. */ | |
0e1862bb | 17243 | if (is_opd && (info->emitrelocations || bfd_link_relocatable (info))) |
8860955f AM |
17244 | { |
17245 | bfd_size_type amt; | |
17246 | amt = input_section->reloc_count * sizeof (Elf_Internal_Rela); | |
17247 | rel = bfd_alloc (input_bfd, amt); | |
729eabd5 AM |
17248 | BFD_ASSERT (ppc64_elf_tdata (input_bfd)->opd.relocs == NULL); |
17249 | ppc64_elf_tdata (input_bfd)->opd.relocs = rel; | |
8860955f AM |
17250 | if (rel == NULL) |
17251 | return FALSE; | |
17252 | memcpy (rel, relocs, amt); | |
17253 | } | |
5bd4f169 AM |
17254 | return ret; |
17255 | } | |
17256 | ||
754021d0 AM |
17257 | /* Adjust the value of any local symbols in opd sections. */ |
17258 | ||
6e0b88f1 | 17259 | static int |
754021d0 AM |
17260 | ppc64_elf_output_symbol_hook (struct bfd_link_info *info, |
17261 | const char *name ATTRIBUTE_UNUSED, | |
17262 | Elf_Internal_Sym *elfsym, | |
17263 | asection *input_sec, | |
17264 | struct elf_link_hash_entry *h) | |
17265 | { | |
74f0fb50 AM |
17266 | struct _opd_sec_data *opd; |
17267 | long adjust; | |
754021d0 AM |
17268 | bfd_vma value; |
17269 | ||
4025353c | 17270 | if (h != NULL) |
6e0b88f1 | 17271 | return 1; |
4025353c | 17272 | |
74f0fb50 AM |
17273 | opd = get_opd_info (input_sec); |
17274 | if (opd == NULL || opd->adjust == NULL) | |
6e0b88f1 | 17275 | return 1; |
754021d0 AM |
17276 | |
17277 | value = elfsym->st_value - input_sec->output_offset; | |
0e1862bb | 17278 | if (!bfd_link_relocatable (info)) |
754021d0 AM |
17279 | value -= input_sec->output_section->vma; |
17280 | ||
51aecdc5 | 17281 | adjust = opd->adjust[OPD_NDX (value)]; |
4025353c | 17282 | if (adjust == -1) |
6e0b88f1 AM |
17283 | return 2; |
17284 | ||
17285 | elfsym->st_value += adjust; | |
17286 | return 1; | |
754021d0 AM |
17287 | } |
17288 | ||
5bd4f169 AM |
17289 | /* Finish up dynamic symbol handling. We set the contents of various |
17290 | dynamic sections here. */ | |
17291 | ||
b34976b6 | 17292 | static bfd_boolean |
4ce794b7 AM |
17293 | ppc64_elf_finish_dynamic_symbol (bfd *output_bfd, |
17294 | struct bfd_link_info *info, | |
17295 | struct elf_link_hash_entry *h, | |
4aef7643 | 17296 | Elf_Internal_Sym *sym) |
5bd4f169 | 17297 | { |
65f38f15 | 17298 | struct ppc_link_hash_table *htab; |
8387904d | 17299 | struct plt_entry *ent; |
5bd4f169 | 17300 | |
65f38f15 | 17301 | htab = ppc_hash_table (info); |
4dfe6ac6 NC |
17302 | if (htab == NULL) |
17303 | return FALSE; | |
5bd4f169 | 17304 | |
49c09209 AM |
17305 | if (!htab->opd_abi && !h->def_regular) |
17306 | for (ent = h->plt.plist; ent != NULL; ent = ent->next) | |
17307 | if (ent->plt.offset != (bfd_vma) -1) | |
17308 | { | |
17309 | /* Mark the symbol as undefined, rather than as | |
17310 | defined in glink. Leave the value if there were | |
17311 | any relocations where pointer equality matters | |
17312 | (this is a clue for the dynamic linker, to make | |
17313 | function pointer comparisons work between an | |
17314 | application and shared library), otherwise set it | |
17315 | to zero. */ | |
17316 | sym->st_shndx = SHN_UNDEF; | |
17317 | if (!h->pointer_equality_needed) | |
17318 | sym->st_value = 0; | |
17319 | else if (!h->ref_regular_nonweak) | |
17320 | { | |
17321 | /* This breaks function pointer comparisons, but | |
17322 | that is better than breaking tests for a NULL | |
17323 | function pointer. */ | |
17324 | sym->st_value = 0; | |
17325 | } | |
17326 | break; | |
17327 | } | |
5bd4f169 | 17328 | |
1bdd8fac AM |
17329 | if (h->needs_copy |
17330 | && (h->root.type == bfd_link_hash_defined | |
17331 | || h->root.type == bfd_link_hash_defweak) | |
17332 | && (h->root.u.def.section == htab->elf.sdynbss | |
17333 | || h->root.u.def.section == htab->elf.sdynrelro)) | |
5bd4f169 | 17334 | { |
65f38f15 | 17335 | /* This symbol needs a copy reloc. Set it up. */ |
49c09209 | 17336 | Elf_Internal_Rela rela; |
5474d94f | 17337 | asection *srel; |
49c09209 | 17338 | bfd_byte *loc; |
5bd4f169 | 17339 | |
1bdd8fac | 17340 | if (h->dynindx == -1) |
65f38f15 | 17341 | abort (); |
5bd4f169 | 17342 | |
ed7007c1 | 17343 | rela.r_offset = defined_sym_val (h); |
5bd4f169 AM |
17344 | rela.r_info = ELF64_R_INFO (h->dynindx, R_PPC64_COPY); |
17345 | rela.r_addend = 0; | |
afbf7e8e | 17346 | if (h->root.u.def.section == htab->elf.sdynrelro) |
5474d94f AM |
17347 | srel = htab->elf.sreldynrelro; |
17348 | else | |
17349 | srel = htab->elf.srelbss; | |
17350 | loc = srel->contents; | |
17351 | loc += srel->reloc_count++ * sizeof (Elf64_External_Rela); | |
65f38f15 | 17352 | bfd_elf64_swap_reloca_out (output_bfd, &rela, loc); |
5bd4f169 AM |
17353 | } |
17354 | ||
b34976b6 | 17355 | return TRUE; |
5bd4f169 AM |
17356 | } |
17357 | ||
65f38f15 AM |
17358 | /* Used to decide how to sort relocs in an optimal manner for the |
17359 | dynamic linker, before writing them out. */ | |
17360 | ||
17361 | static enum elf_reloc_type_class | |
7e612e98 AM |
17362 | ppc64_elf_reloc_type_class (const struct bfd_link_info *info, |
17363 | const asection *rel_sec, | |
17364 | const Elf_Internal_Rela *rela) | |
65f38f15 | 17365 | { |
04c9666a | 17366 | enum elf_ppc64_reloc_type r_type; |
7e612e98 AM |
17367 | struct ppc_link_hash_table *htab = ppc_hash_table (info); |
17368 | ||
33e44f2e | 17369 | if (rel_sec == htab->elf.irelplt) |
7e612e98 | 17370 | return reloc_class_ifunc; |
a33d1f77 | 17371 | |
4ce794b7 | 17372 | r_type = ELF64_R_TYPE (rela->r_info); |
a33d1f77 | 17373 | switch (r_type) |
65f38f15 AM |
17374 | { |
17375 | case R_PPC64_RELATIVE: | |
17376 | return reloc_class_relative; | |
17377 | case R_PPC64_JMP_SLOT: | |
17378 | return reloc_class_plt; | |
17379 | case R_PPC64_COPY: | |
17380 | return reloc_class_copy; | |
17381 | default: | |
17382 | return reloc_class_normal; | |
17383 | } | |
17384 | } | |
17385 | ||
5bd4f169 AM |
17386 | /* Finish up the dynamic sections. */ |
17387 | ||
b34976b6 | 17388 | static bfd_boolean |
4ce794b7 AM |
17389 | ppc64_elf_finish_dynamic_sections (bfd *output_bfd, |
17390 | struct bfd_link_info *info) | |
5bd4f169 | 17391 | { |
65f38f15 AM |
17392 | struct ppc_link_hash_table *htab; |
17393 | bfd *dynobj; | |
5bd4f169 | 17394 | asection *sdyn; |
5bd4f169 | 17395 | |
65f38f15 | 17396 | htab = ppc_hash_table (info); |
4dfe6ac6 NC |
17397 | if (htab == NULL) |
17398 | return FALSE; | |
17399 | ||
65f38f15 | 17400 | dynobj = htab->elf.dynobj; |
3d4d4302 | 17401 | sdyn = bfd_get_linker_section (dynobj, ".dynamic"); |
5bd4f169 | 17402 | |
65f38f15 | 17403 | if (htab->elf.dynamic_sections_created) |
5bd4f169 | 17404 | { |
5bd4f169 AM |
17405 | Elf64_External_Dyn *dyncon, *dynconend; |
17406 | ||
33e44f2e | 17407 | if (sdyn == NULL || htab->elf.sgot == NULL) |
65f38f15 | 17408 | abort (); |
5bd4f169 AM |
17409 | |
17410 | dyncon = (Elf64_External_Dyn *) sdyn->contents; | |
eea6121a | 17411 | dynconend = (Elf64_External_Dyn *) (sdyn->contents + sdyn->size); |
5bd4f169 AM |
17412 | for (; dyncon < dynconend; dyncon++) |
17413 | { | |
17414 | Elf_Internal_Dyn dyn; | |
19397422 | 17415 | asection *s; |
5bd4f169 AM |
17416 | |
17417 | bfd_elf64_swap_dyn_in (dynobj, dyncon, &dyn); | |
17418 | ||
17419 | switch (dyn.d_tag) | |
17420 | { | |
65f38f15 AM |
17421 | default: |
17422 | continue; | |
5bd4f169 | 17423 | |
5d1634d7 | 17424 | case DT_PPC64_GLINK: |
4ce794b7 | 17425 | s = htab->glink; |
6348e046 | 17426 | dyn.d_un.d_ptr = s->output_section->vma + s->output_offset; |
ad8e1ba5 AM |
17427 | /* We stupidly defined DT_PPC64_GLINK to be the start |
17428 | of glink rather than the first entry point, which is | |
17429 | what ld.so needs, and now have a bigger stub to | |
17430 | support automatic multiple TOCs. */ | |
9e390558 | 17431 | dyn.d_un.d_ptr += GLINK_PLTRESOLVE_SIZE (htab) - 8 * 4; |
5d1634d7 AM |
17432 | break; |
17433 | ||
19397422 AM |
17434 | case DT_PPC64_OPD: |
17435 | s = bfd_get_section_by_name (output_bfd, ".opd"); | |
6348e046 AM |
17436 | if (s == NULL) |
17437 | continue; | |
17438 | dyn.d_un.d_ptr = s->vma; | |
19397422 AM |
17439 | break; |
17440 | ||
e8910a83 | 17441 | case DT_PPC64_OPT: |
5663e321 AM |
17442 | if ((htab->do_multi_toc && htab->multi_toc_needed) |
17443 | || htab->notoc_plt) | |
e8910a83 | 17444 | dyn.d_un.d_val |= PPC64_OPT_MULTI_TOC; |
f378ab09 AM |
17445 | if (htab->has_plt_localentry0) |
17446 | dyn.d_un.d_val |= PPC64_OPT_LOCALENTRY; | |
e8910a83 AM |
17447 | break; |
17448 | ||
19397422 AM |
17449 | case DT_PPC64_OPDSZ: |
17450 | s = bfd_get_section_by_name (output_bfd, ".opd"); | |
6348e046 AM |
17451 | if (s == NULL) |
17452 | continue; | |
eea6121a | 17453 | dyn.d_un.d_val = s->size; |
19397422 AM |
17454 | break; |
17455 | ||
65f38f15 | 17456 | case DT_PLTGOT: |
33e44f2e | 17457 | s = htab->elf.splt; |
6348e046 | 17458 | dyn.d_un.d_ptr = s->output_section->vma + s->output_offset; |
65f38f15 AM |
17459 | break; |
17460 | ||
17461 | case DT_JMPREL: | |
33e44f2e | 17462 | s = htab->elf.srelplt; |
6348e046 | 17463 | dyn.d_un.d_ptr = s->output_section->vma + s->output_offset; |
65f38f15 | 17464 | break; |
5bd4f169 | 17465 | |
65f38f15 | 17466 | case DT_PLTRELSZ: |
33e44f2e | 17467 | dyn.d_un.d_val = htab->elf.srelplt->size; |
5d1634d7 | 17468 | break; |
82e66161 AM |
17469 | |
17470 | case DT_TEXTREL: | |
cebd6b8a | 17471 | if (htab->elf.ifunc_resolvers) |
82e66161 AM |
17472 | info->callbacks->einfo |
17473 | (_("%P: warning: text relocations and GNU indirect " | |
17474 | "functions may result in a segfault at runtime\n")); | |
17475 | continue; | |
5bd4f169 | 17476 | } |
5bd4f169 | 17477 | |
65f38f15 | 17478 | bfd_elf64_swap_dyn_out (output_bfd, &dyn, dyncon); |
5bd4f169 | 17479 | } |
5bd4f169 AM |
17480 | } |
17481 | ||
6528b6eb AM |
17482 | if (htab->elf.sgot != NULL && htab->elf.sgot->size != 0 |
17483 | && htab->elf.sgot->output_section != bfd_abs_section_ptr) | |
5d1634d7 AM |
17484 | { |
17485 | /* Fill in the first entry in the global offset table. | |
17486 | We use it to hold the link-time TOCbase. */ | |
17487 | bfd_put_64 (output_bfd, | |
60ee0d4a | 17488 | elf_gp (output_bfd) + TOC_BASE_OFF, |
33e44f2e | 17489 | htab->elf.sgot->contents); |
5d1634d7 AM |
17490 | |
17491 | /* Set .got entry size. */ | |
2cdcc330 AM |
17492 | elf_section_data (htab->elf.sgot->output_section)->this_hdr.sh_entsize |
17493 | = 8; | |
5d1634d7 AM |
17494 | } |
17495 | ||
6528b6eb AM |
17496 | if (htab->elf.splt != NULL && htab->elf.splt->size != 0 |
17497 | && htab->elf.splt->output_section != bfd_abs_section_ptr) | |
5d1634d7 AM |
17498 | { |
17499 | /* Set .plt entry size. */ | |
33e44f2e | 17500 | elf_section_data (htab->elf.splt->output_section)->this_hdr.sh_entsize |
b9e5796b | 17501 | = PLT_ENTRY_SIZE (htab); |
5d1634d7 AM |
17502 | } |
17503 | ||
84f5d08e AM |
17504 | /* brlt is SEC_LINKER_CREATED, so we need to write out relocs for |
17505 | brlt ourselves if emitrelocations. */ | |
17506 | if (htab->brlt != NULL | |
17507 | && htab->brlt->reloc_count != 0 | |
17508 | && !_bfd_elf_link_output_relocs (output_bfd, | |
17509 | htab->brlt, | |
d4730f92 | 17510 | elf_section_data (htab->brlt)->rela.hdr, |
84f5d08e AM |
17511 | elf_section_data (htab->brlt)->relocs, |
17512 | NULL)) | |
17513 | return FALSE; | |
17514 | ||
176a0d42 AM |
17515 | if (htab->glink != NULL |
17516 | && htab->glink->reloc_count != 0 | |
17517 | && !_bfd_elf_link_output_relocs (output_bfd, | |
17518 | htab->glink, | |
d4730f92 | 17519 | elf_section_data (htab->glink)->rela.hdr, |
176a0d42 AM |
17520 | elf_section_data (htab->glink)->relocs, |
17521 | NULL)) | |
17522 | return FALSE; | |
17523 | ||
da44f4e5 | 17524 | |
df136d64 AM |
17525 | if (htab->glink_eh_frame != NULL |
17526 | && htab->glink_eh_frame->size != 0 | |
17527 | && htab->glink_eh_frame->sec_info_type == SEC_INFO_TYPE_EH_FRAME | |
17528 | && !_bfd_elf_write_section_eh_frame (output_bfd, info, | |
17529 | htab->glink_eh_frame, | |
17530 | htab->glink_eh_frame->contents)) | |
17531 | return FALSE; | |
58d180e8 | 17532 | |
e717da7e | 17533 | /* We need to handle writing out multiple GOT sections ourselves, |
7b53ace3 AM |
17534 | since we didn't add them to DYNOBJ. We know dynobj is the first |
17535 | bfd. */ | |
c72f2fb2 | 17536 | while ((dynobj = dynobj->link.next) != NULL) |
e717da7e AM |
17537 | { |
17538 | asection *s; | |
7b53ace3 | 17539 | |
0c8d6e5c | 17540 | if (!is_ppc64_elf (dynobj)) |
7b53ace3 AM |
17541 | continue; |
17542 | ||
e717da7e AM |
17543 | s = ppc64_elf_tdata (dynobj)->got; |
17544 | if (s != NULL | |
eea6121a | 17545 | && s->size != 0 |
e717da7e AM |
17546 | && s->output_section != bfd_abs_section_ptr |
17547 | && !bfd_set_section_contents (output_bfd, s->output_section, | |
17548 | s->contents, s->output_offset, | |
eea6121a | 17549 | s->size)) |
e717da7e AM |
17550 | return FALSE; |
17551 | s = ppc64_elf_tdata (dynobj)->relgot; | |
17552 | if (s != NULL | |
eea6121a | 17553 | && s->size != 0 |
e717da7e AM |
17554 | && s->output_section != bfd_abs_section_ptr |
17555 | && !bfd_set_section_contents (output_bfd, s->output_section, | |
17556 | s->contents, s->output_offset, | |
eea6121a | 17557 | s->size)) |
e717da7e AM |
17558 | return FALSE; |
17559 | } | |
f6c52c13 | 17560 | |
b34976b6 | 17561 | return TRUE; |
5bd4f169 AM |
17562 | } |
17563 | ||
5bd4f169 | 17564 | #include "elf64-target.h" |
7b8e7dad AM |
17565 | |
17566 | /* FreeBSD support */ | |
17567 | ||
17568 | #undef TARGET_LITTLE_SYM | |
17569 | #undef TARGET_LITTLE_NAME | |
17570 | ||
17571 | #undef TARGET_BIG_SYM | |
6d00b590 | 17572 | #define TARGET_BIG_SYM powerpc_elf64_fbsd_vec |
7b8e7dad AM |
17573 | #undef TARGET_BIG_NAME |
17574 | #define TARGET_BIG_NAME "elf64-powerpc-freebsd" | |
17575 | ||
17576 | #undef ELF_OSABI | |
17577 | #define ELF_OSABI ELFOSABI_FREEBSD | |
17578 | ||
17579 | #undef elf64_bed | |
17580 | #define elf64_bed elf64_powerpc_fbsd_bed | |
17581 | ||
17582 | #include "elf64-target.h" |