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5bd4f169 | 1 | /* PowerPC64-specific support for 64-bit ELF. |
219d1afa | 2 | Copyright (C) 1999-2018 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 | |
805fc799 | 38 | static bfd_reloc_status_type ppc64_elf_ha_reloc |
4ce794b7 | 39 | (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **); |
2441e016 AM |
40 | static bfd_reloc_status_type ppc64_elf_branch_reloc |
41 | (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **); | |
805fc799 | 42 | static bfd_reloc_status_type ppc64_elf_brtaken_reloc |
4ce794b7 | 43 | (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **); |
805fc799 | 44 | static bfd_reloc_status_type ppc64_elf_sectoff_reloc |
4ce794b7 | 45 | (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **); |
805fc799 | 46 | static bfd_reloc_status_type ppc64_elf_sectoff_ha_reloc |
4ce794b7 | 47 | (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **); |
805fc799 | 48 | static bfd_reloc_status_type ppc64_elf_toc_reloc |
4ce794b7 | 49 | (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **); |
805fc799 | 50 | static bfd_reloc_status_type ppc64_elf_toc_ha_reloc |
4ce794b7 | 51 | (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **); |
805fc799 | 52 | static bfd_reloc_status_type ppc64_elf_toc64_reloc |
4ce794b7 | 53 | (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **); |
805fc799 | 54 | static bfd_reloc_status_type ppc64_elf_unhandled_reloc |
4ce794b7 | 55 | (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **); |
2441e016 | 56 | static bfd_vma opd_entry_value |
aef36ac1 | 57 | (asection *, bfd_vma, asection **, bfd_vma *, bfd_boolean); |
5bd4f169 | 58 | |
6d00b590 | 59 | #define TARGET_LITTLE_SYM powerpc_elf64_le_vec |
ad8e1ba5 | 60 | #define TARGET_LITTLE_NAME "elf64-powerpcle" |
6d00b590 | 61 | #define TARGET_BIG_SYM powerpc_elf64_vec |
ad8e1ba5 AM |
62 | #define TARGET_BIG_NAME "elf64-powerpc" |
63 | #define ELF_ARCH bfd_arch_powerpc | |
ae95ffa6 | 64 | #define ELF_TARGET_ID PPC64_ELF_DATA |
ad8e1ba5 AM |
65 | #define ELF_MACHINE_CODE EM_PPC64 |
66 | #define ELF_MAXPAGESIZE 0x10000 | |
702d1671 AM |
67 | #define ELF_COMMONPAGESIZE 0x1000 |
68 | #define ELF_RELROPAGESIZE ELF_MAXPAGESIZE | |
ad8e1ba5 AM |
69 | #define elf_info_to_howto ppc64_elf_info_to_howto |
70 | ||
71 | #define elf_backend_want_got_sym 0 | |
72 | #define elf_backend_want_plt_sym 0 | |
73 | #define elf_backend_plt_alignment 3 | |
74 | #define elf_backend_plt_not_loaded 1 | |
ad8e1ba5 | 75 | #define elf_backend_got_header_size 8 |
5474d94f | 76 | #define elf_backend_want_dynrelro 1 |
ad8e1ba5 AM |
77 | #define elf_backend_can_gc_sections 1 |
78 | #define elf_backend_can_refcount 1 | |
79 | #define elf_backend_rela_normal 1 | |
64f52338 | 80 | #define elf_backend_dtrel_excludes_plt 1 |
6bfdb61b | 81 | #define elf_backend_default_execstack 0 |
ad8e1ba5 | 82 | |
e717da7e | 83 | #define bfd_elf64_mkobject ppc64_elf_mkobject |
ad8e1ba5 | 84 | #define bfd_elf64_bfd_reloc_type_lookup ppc64_elf_reloc_type_lookup |
aa374f67 | 85 | #define bfd_elf64_bfd_reloc_name_lookup ppc64_elf_reloc_name_lookup |
ee67d69a AM |
86 | #define bfd_elf64_bfd_merge_private_bfd_data ppc64_elf_merge_private_bfd_data |
87 | #define bfd_elf64_bfd_print_private_bfd_data ppc64_elf_print_private_bfd_data | |
ad8e1ba5 AM |
88 | #define bfd_elf64_new_section_hook ppc64_elf_new_section_hook |
89 | #define bfd_elf64_bfd_link_hash_table_create ppc64_elf_link_hash_table_create | |
90e3cdf2 | 90 | #define bfd_elf64_get_synthetic_symtab ppc64_elf_get_synthetic_symtab |
aa374f67 | 91 | #define bfd_elf64_bfd_link_just_syms ppc64_elf_link_just_syms |
8c5b4e52 | 92 | #define bfd_elf64_bfd_gc_sections ppc64_elf_gc_sections |
ad8e1ba5 AM |
93 | |
94 | #define elf_backend_object_p ppc64_elf_object_p | |
d37c89e5 AM |
95 | #define elf_backend_grok_prstatus ppc64_elf_grok_prstatus |
96 | #define elf_backend_grok_psinfo ppc64_elf_grok_psinfo | |
183e98be | 97 | #define elf_backend_write_core_note ppc64_elf_write_core_note |
9d19e4fd | 98 | #define elf_backend_create_dynamic_sections _bfd_elf_create_dynamic_sections |
ad8e1ba5 | 99 | #define elf_backend_copy_indirect_symbol ppc64_elf_copy_indirect_symbol |
555cd476 | 100 | #define elf_backend_add_symbol_hook ppc64_elf_add_symbol_hook |
f6c7c3e8 | 101 | #define elf_backend_check_directives ppc64_elf_before_check_relocs |
e5034e59 | 102 | #define elf_backend_notice_as_needed ppc64_elf_notice_as_needed |
8387904d | 103 | #define elf_backend_archive_symbol_lookup ppc64_elf_archive_symbol_lookup |
ad8e1ba5 | 104 | #define elf_backend_check_relocs ppc64_elf_check_relocs |
c0e331c7 | 105 | #define elf_backend_relocs_compatible _bfd_elf_relocs_compatible |
74f0fb50 | 106 | #define elf_backend_gc_keep ppc64_elf_gc_keep |
64d03ab5 | 107 | #define elf_backend_gc_mark_dynamic_ref ppc64_elf_gc_mark_dynamic_ref |
ad8e1ba5 | 108 | #define elf_backend_gc_mark_hook ppc64_elf_gc_mark_hook |
ad8e1ba5 AM |
109 | #define elf_backend_adjust_dynamic_symbol ppc64_elf_adjust_dynamic_symbol |
110 | #define elf_backend_hide_symbol ppc64_elf_hide_symbol | |
9f296da3 | 111 | #define elf_backend_maybe_function_sym ppc64_elf_maybe_function_sym |
ad8e1ba5 AM |
112 | #define elf_backend_always_size_sections ppc64_elf_func_desc_adjust |
113 | #define elf_backend_size_dynamic_sections ppc64_elf_size_dynamic_sections | |
a345bc8d | 114 | #define elf_backend_hash_symbol ppc64_elf_hash_symbol |
74541ad4 | 115 | #define elf_backend_init_index_section _bfd_elf_init_2_index_sections |
60124e18 | 116 | #define elf_backend_action_discarded ppc64_elf_action_discarded |
ad8e1ba5 AM |
117 | #define elf_backend_relocate_section ppc64_elf_relocate_section |
118 | #define elf_backend_finish_dynamic_symbol ppc64_elf_finish_dynamic_symbol | |
119 | #define elf_backend_reloc_type_class ppc64_elf_reloc_type_class | |
120 | #define elf_backend_finish_dynamic_sections ppc64_elf_finish_dynamic_sections | |
754021d0 | 121 | #define elf_backend_link_output_symbol_hook ppc64_elf_output_symbol_hook |
29ef7005 | 122 | #define elf_backend_special_sections ppc64_elf_special_sections |
6911b7dc | 123 | #define elf_backend_merge_symbol_attribute ppc64_elf_merge_symbol_attribute |
8c5b4e52 | 124 | #define elf_backend_merge_symbol ppc64_elf_merge_symbol |
bce964aa | 125 | #define elf_backend_get_reloc_section bfd_get_section_by_name |
ad8e1ba5 | 126 | |
5bd4f169 AM |
127 | /* The name of the dynamic interpreter. This is put in the .interp |
128 | section. */ | |
129 | #define ELF_DYNAMIC_INTERPRETER "/usr/lib/ld.so.1" | |
130 | ||
131 | /* The size in bytes of an entry in the procedure linkage table. */ | |
b9e5796b | 132 | #define PLT_ENTRY_SIZE(htab) (htab->opd_abi ? 24 : 8) |
2d7ad24e | 133 | #define LOCAL_PLT_ENTRY_SIZE(htab) (htab->opd_abi ? 16 : 8) |
5bd4f169 AM |
134 | |
135 | /* The initial size of the plt reserved for the dynamic linker. */ | |
b9e5796b | 136 | #define PLT_INITIAL_ENTRY_SIZE(htab) (htab->opd_abi ? 24 : 16) |
5bd4f169 | 137 | |
a078d95a AM |
138 | /* Offsets to some stack save slots. */ |
139 | #define STK_LR 16 | |
140 | #define STK_TOC(htab) (htab->opd_abi ? 40 : 24) | |
eb8d7fda | 141 | /* This one is dodgy. ELFv2 does not have a linker word, so use the |
a078d95a AM |
142 | CR save slot. Used only by optimised __tls_get_addr call stub, |
143 | relying on __tls_get_addr_opt not saving CR.. */ | |
144 | #define STK_LINKER(htab) (htab->opd_abi ? 32 : 8) | |
145 | ||
5bd4f169 | 146 | /* TOC base pointers offset from start of TOC. */ |
411e1bfb | 147 | #define TOC_BASE_OFF 0x8000 |
a27e685f AM |
148 | /* TOC base alignment. */ |
149 | #define TOC_BASE_ALIGN 256 | |
411e1bfb AM |
150 | |
151 | /* Offset of tp and dtp pointers from start of TLS block. */ | |
152 | #define TP_OFFSET 0x7000 | |
153 | #define DTP_OFFSET 0x8000 | |
5bd4f169 | 154 | |
ad8e1ba5 AM |
155 | /* .plt call stub instructions. The normal stub is like this, but |
156 | sometimes the .plt entry crosses a 64k boundary and we need to | |
71a39c98 | 157 | insert an addi to adjust r11. */ |
a078d95a | 158 | #define STD_R2_0R1 0xf8410000 /* std %r2,0+40(%r1) */ |
71a39c98 AM |
159 | #define ADDIS_R11_R2 0x3d620000 /* addis %r11,%r2,xxx@ha */ |
160 | #define LD_R12_0R11 0xe98b0000 /* ld %r12,xxx+0@l(%r11) */ | |
161 | #define MTCTR_R12 0x7d8903a6 /* mtctr %r12 */ | |
162 | #define LD_R2_0R11 0xe84b0000 /* ld %r2,xxx+8@l(%r11) */ | |
163 | #define LD_R11_0R11 0xe96b0000 /* ld %r11,xxx+16@l(%r11) */ | |
5d1634d7 AM |
164 | #define BCTR 0x4e800420 /* bctr */ |
165 | ||
07d6d2b8 | 166 | #define ADDI_R11_R11 0x396b0000 /* addi %r11,%r11,off@l */ |
05d0e962 AM |
167 | #define ADDI_R12_R11 0x398b0000 /* addi %r12,%r11,off@l */ |
168 | #define ADDI_R12_R12 0x398c0000 /* addi %r12,%r12,off@l */ | |
07d6d2b8 AM |
169 | #define ADDIS_R2_R2 0x3c420000 /* addis %r2,%r2,off@ha */ |
170 | #define ADDI_R2_R2 0x38420000 /* addi %r2,%r2,off@l */ | |
171 | ||
172 | #define XOR_R2_R12_R12 0x7d826278 /* xor %r2,%r12,%r12 */ | |
173 | #define ADD_R11_R11_R2 0x7d6b1214 /* add %r11,%r11,%r2 */ | |
174 | #define XOR_R11_R12_R12 0x7d8b6278 /* xor %r11,%r12,%r12 */ | |
175 | #define ADD_R2_R2_R11 0x7c425a14 /* add %r2,%r2,%r11 */ | |
176 | #define CMPLDI_R2_0 0x28220000 /* cmpldi %r2,0 */ | |
177 | #define BNECTR 0x4ca20420 /* bnectr+ */ | |
178 | #define BNECTR_P4 0x4ce20420 /* bnectr+ */ | |
794e51c0 | 179 | |
71a39c98 | 180 | #define LD_R12_0R2 0xe9820000 /* ld %r12,xxx+0(%r2) */ |
ac2df442 | 181 | #define LD_R11_0R2 0xe9620000 /* ld %r11,xxx+0(%r2) */ |
07d6d2b8 | 182 | #define LD_R2_0R2 0xe8420000 /* ld %r2,xxx+0(%r2) */ |
ac2df442 | 183 | |
07d6d2b8 AM |
184 | #define LD_R2_0R1 0xe8410000 /* ld %r2,0(%r1) */ |
185 | #define LD_R2_0R12 0xe84c0000 /* ld %r2,0(%r12) */ | |
186 | #define ADD_R2_R2_R12 0x7c426214 /* add %r2,%r2,%r12 */ | |
ad8e1ba5 | 187 | |
07d6d2b8 | 188 | #define LIS_R2 0x3c400000 /* lis %r2,xxx@ha */ |
05d0e962 | 189 | #define LIS_R12 0x3d800000 /* lis %r12,xxx@ha */ |
006589cf AM |
190 | #define ADDIS_R2_R12 0x3c4c0000 /* addis %r2,%r12,xxx@ha */ |
191 | #define ADDIS_R12_R2 0x3d820000 /* addis %r12,%r2,xxx@ha */ | |
05d0e962 | 192 | #define ADDIS_R12_R11 0x3d8b0000 /* addis %r12,%r11,xxx@ha */ |
a345bc8d | 193 | #define ADDIS_R12_R12 0x3d8c0000 /* addis %r12,%r12,xxx@ha */ |
05d0e962 AM |
194 | #define ORIS_R12_R12_0 0x658c0000 /* oris %r12,%r12,xxx@hi */ |
195 | #define ORI_R12_R12_0 0x618c0000 /* ori %r12,%r12,xxx@l */ | |
07d6d2b8 | 196 | #define LD_R12_0R12 0xe98c0000 /* ld %r12,xxx@l(%r12) */ |
05d0e962 AM |
197 | #define SLDI_R12_R12_32 0x799c07c6 /* sldi %r12,%r12,32 */ |
198 | #define LDX_R12_R11_R12 0x7d8b602a /* ldx %r12,%r11,%r12 */ | |
199 | #define ADD_R12_R11_R12 0x7d8b6214 /* add %r12,%r11,%r12 */ | |
a345bc8d | 200 | |
9e390558 AM |
201 | /* __glink_PLTresolve stub instructions. We enter with the index in R0. */ |
202 | #define GLINK_PLTRESOLVE_SIZE(htab) \ | |
407aa07c | 203 | (8u + (htab->opd_abi ? 11 * 4 : 14 * 4)) |
ee4bf8d2 AM |
204 | /* 0: */ |
205 | /* .quad plt0-1f */ | |
206 | /* __glink: */ | |
207 | #define MFLR_R12 0x7d8802a6 /* mflr %12 */ | |
208 | #define BCL_20_31 0x429f0005 /* bcl 20,31,1f */ | |
209 | /* 1: */ | |
210 | #define MFLR_R11 0x7d6802a6 /* mflr %11 */ | |
71a39c98 | 211 | /* ld %2,(0b-1b)(%11) */ |
ee4bf8d2 | 212 | #define MTLR_R12 0x7d8803a6 /* mtlr %12 */ |
71a39c98 AM |
213 | #define ADD_R11_R2_R11 0x7d625a14 /* add %11,%2,%11 */ |
214 | /* ld %12,0(%11) */ | |
215 | /* ld %2,8(%11) */ | |
216 | /* mtctr %12 */ | |
217 | /* ld %11,16(%11) */ | |
ee4bf8d2 | 218 | /* bctr */ |
b9e5796b AM |
219 | #define MFLR_R0 0x7c0802a6 /* mflr %r0 */ |
220 | #define MTLR_R0 0x7c0803a6 /* mtlr %r0 */ | |
221 | #define SUB_R12_R12_R11 0x7d8b6050 /* subf %r12,%r11,%r12 */ | |
222 | #define ADDI_R0_R12 0x380c0000 /* addi %r0,%r12,0 */ | |
223 | #define SRDI_R0_R0_2 0x7800f082 /* rldicl %r0,%r0,62,2 */ | |
5d1634d7 AM |
224 | |
225 | /* Pad with this. */ | |
226 | #define NOP 0x60000000 | |
227 | ||
721956f4 AM |
228 | /* Some other nops. */ |
229 | #define CROR_151515 0x4def7b82 | |
230 | #define CROR_313131 0x4ffffb82 | |
231 | ||
cedb70c5 | 232 | /* .glink entries for the first 32k functions are two instructions. */ |
5d1634d7 AM |
233 | #define LI_R0_0 0x38000000 /* li %r0,0 */ |
234 | #define B_DOT 0x48000000 /* b . */ | |
235 | ||
236 | /* After that, we need two instructions to load the index, followed by | |
237 | a branch. */ | |
238 | #define LIS_R0_0 0x3c000000 /* lis %r0,0 */ | |
10ed1bba | 239 | #define ORI_R0_R0_0 0x60000000 /* ori %r0,%r0,0 */ |
41bd81ab | 240 | |
deb0e272 AM |
241 | /* Instructions used by the save and restore reg functions. */ |
242 | #define STD_R0_0R1 0xf8010000 /* std %r0,0(%r1) */ | |
243 | #define STD_R0_0R12 0xf80c0000 /* std %r0,0(%r12) */ | |
244 | #define LD_R0_0R1 0xe8010000 /* ld %r0,0(%r1) */ | |
245 | #define LD_R0_0R12 0xe80c0000 /* ld %r0,0(%r12) */ | |
82bd7b59 AM |
246 | #define STFD_FR0_0R1 0xd8010000 /* stfd %fr0,0(%r1) */ |
247 | #define LFD_FR0_0R1 0xc8010000 /* lfd %fr0,0(%r1) */ | |
deb0e272 AM |
248 | #define LI_R12_0 0x39800000 /* li %r12,0 */ |
249 | #define STVX_VR0_R12_R0 0x7c0c01ce /* stvx %v0,%r12,%r0 */ | |
250 | #define LVX_VR0_R12_R0 0x7c0c00ce /* lvx %v0,%r12,%r0 */ | |
251 | #define MTLR_R0 0x7c0803a6 /* mtlr %r0 */ | |
82bd7b59 AM |
252 | #define BLR 0x4e800020 /* blr */ |
253 | ||
41bd81ab AM |
254 | /* Since .opd is an array of descriptors and each entry will end up |
255 | with identical R_PPC64_RELATIVE relocs, there is really no need to | |
256 | propagate .opd relocs; The dynamic linker should be taught to | |
1e2f5b6e | 257 | relocate .opd without reloc entries. */ |
41bd81ab AM |
258 | #ifndef NO_OPD_RELOCS |
259 | #define NO_OPD_RELOCS 0 | |
260 | #endif | |
810d4e75 | 261 | |
a4b6fadd AM |
262 | #ifndef ARRAY_SIZE |
263 | #define ARRAY_SIZE(a) (sizeof (a) / sizeof ((a)[0])) | |
264 | #endif | |
265 | ||
810d4e75 AM |
266 | static inline int |
267 | abiversion (bfd *abfd) | |
268 | { | |
269 | return elf_elfheader (abfd)->e_flags & EF_PPC64_ABI; | |
270 | } | |
271 | ||
272 | static inline void | |
273 | set_abiversion (bfd *abfd, int ver) | |
274 | { | |
275 | elf_elfheader (abfd)->e_flags &= ~EF_PPC64_ABI; | |
276 | elf_elfheader (abfd)->e_flags |= ver & EF_PPC64_ABI; | |
277 | } | |
5bd4f169 | 278 | \f |
f5e87a1d | 279 | #define ONES(n) (((bfd_vma) 1 << ((n) - 1) << 1) - 1) |
b34976b6 | 280 | |
5bd4f169 | 281 | /* Relocation HOWTO's. */ |
04c9666a | 282 | static reloc_howto_type *ppc64_elf_howto_table[(int) R_PPC64_max]; |
5bd4f169 | 283 | |
f3185997 NC |
284 | static reloc_howto_type ppc64_elf_howto_raw[] = |
285 | { | |
5bd4f169 AM |
286 | /* This reloc does nothing. */ |
287 | HOWTO (R_PPC64_NONE, /* type */ | |
288 | 0, /* rightshift */ | |
6346d5ca AM |
289 | 3, /* size (0 = byte, 1 = short, 2 = long) */ |
290 | 0, /* bitsize */ | |
b34976b6 | 291 | FALSE, /* pc_relative */ |
5bd4f169 | 292 | 0, /* bitpos */ |
f5e87a1d | 293 | complain_overflow_dont, /* complain_on_overflow */ |
5bd4f169 AM |
294 | bfd_elf_generic_reloc, /* special_function */ |
295 | "R_PPC64_NONE", /* name */ | |
b34976b6 | 296 | FALSE, /* partial_inplace */ |
d006db6c | 297 | 0, /* src_mask */ |
5bd4f169 | 298 | 0, /* dst_mask */ |
b34976b6 | 299 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
300 | |
301 | /* A standard 32 bit relocation. */ | |
302 | HOWTO (R_PPC64_ADDR32, /* type */ | |
303 | 0, /* rightshift */ | |
304 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
305 | 32, /* bitsize */ | |
b34976b6 | 306 | FALSE, /* pc_relative */ |
5bd4f169 AM |
307 | 0, /* bitpos */ |
308 | complain_overflow_bitfield, /* complain_on_overflow */ | |
309 | bfd_elf_generic_reloc, /* special_function */ | |
310 | "R_PPC64_ADDR32", /* name */ | |
b34976b6 | 311 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
312 | 0, /* src_mask */ |
313 | 0xffffffff, /* dst_mask */ | |
b34976b6 | 314 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
315 | |
316 | /* An absolute 26 bit branch; the lower two bits must be zero. | |
317 | FIXME: we don't check that, we just clear them. */ | |
318 | HOWTO (R_PPC64_ADDR24, /* type */ | |
319 | 0, /* rightshift */ | |
320 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
321 | 26, /* bitsize */ | |
b34976b6 | 322 | FALSE, /* pc_relative */ |
5bd4f169 AM |
323 | 0, /* bitpos */ |
324 | complain_overflow_bitfield, /* complain_on_overflow */ | |
325 | bfd_elf_generic_reloc, /* special_function */ | |
326 | "R_PPC64_ADDR24", /* name */ | |
b34976b6 | 327 | FALSE, /* partial_inplace */ |
d006db6c | 328 | 0, /* src_mask */ |
f5e87a1d | 329 | 0x03fffffc, /* dst_mask */ |
b34976b6 | 330 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
331 | |
332 | /* A standard 16 bit relocation. */ | |
333 | HOWTO (R_PPC64_ADDR16, /* type */ | |
334 | 0, /* rightshift */ | |
335 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
336 | 16, /* bitsize */ | |
b34976b6 | 337 | FALSE, /* pc_relative */ |
5bd4f169 AM |
338 | 0, /* bitpos */ |
339 | complain_overflow_bitfield, /* complain_on_overflow */ | |
340 | bfd_elf_generic_reloc, /* special_function */ | |
341 | "R_PPC64_ADDR16", /* name */ | |
b34976b6 | 342 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
343 | 0, /* src_mask */ |
344 | 0xffff, /* dst_mask */ | |
b34976b6 | 345 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
346 | |
347 | /* A 16 bit relocation without overflow. */ | |
348 | HOWTO (R_PPC64_ADDR16_LO, /* type */ | |
349 | 0, /* rightshift */ | |
350 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
351 | 16, /* bitsize */ | |
b34976b6 | 352 | FALSE, /* pc_relative */ |
5bd4f169 AM |
353 | 0, /* bitpos */ |
354 | complain_overflow_dont,/* complain_on_overflow */ | |
355 | bfd_elf_generic_reloc, /* special_function */ | |
356 | "R_PPC64_ADDR16_LO", /* name */ | |
b34976b6 | 357 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
358 | 0, /* src_mask */ |
359 | 0xffff, /* dst_mask */ | |
b34976b6 | 360 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
361 | |
362 | /* Bits 16-31 of an address. */ | |
363 | HOWTO (R_PPC64_ADDR16_HI, /* type */ | |
364 | 16, /* rightshift */ | |
365 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
366 | 16, /* bitsize */ | |
b34976b6 | 367 | FALSE, /* pc_relative */ |
5bd4f169 | 368 | 0, /* bitpos */ |
f9c6b907 | 369 | complain_overflow_signed, /* complain_on_overflow */ |
5bd4f169 AM |
370 | bfd_elf_generic_reloc, /* special_function */ |
371 | "R_PPC64_ADDR16_HI", /* name */ | |
b34976b6 | 372 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
373 | 0, /* src_mask */ |
374 | 0xffff, /* dst_mask */ | |
b34976b6 | 375 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
376 | |
377 | /* Bits 16-31 of an address, plus 1 if the contents of the low 16 | |
378 | bits, treated as a signed number, is negative. */ | |
379 | HOWTO (R_PPC64_ADDR16_HA, /* type */ | |
380 | 16, /* rightshift */ | |
381 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
382 | 16, /* bitsize */ | |
b34976b6 | 383 | FALSE, /* pc_relative */ |
5bd4f169 | 384 | 0, /* bitpos */ |
f9c6b907 | 385 | complain_overflow_signed, /* complain_on_overflow */ |
805fc799 | 386 | ppc64_elf_ha_reloc, /* special_function */ |
5bd4f169 | 387 | "R_PPC64_ADDR16_HA", /* name */ |
b34976b6 | 388 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
389 | 0, /* src_mask */ |
390 | 0xffff, /* dst_mask */ | |
b34976b6 | 391 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
392 | |
393 | /* An absolute 16 bit branch; the lower two bits must be zero. | |
394 | FIXME: we don't check that, we just clear them. */ | |
395 | HOWTO (R_PPC64_ADDR14, /* type */ | |
396 | 0, /* rightshift */ | |
397 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
398 | 16, /* bitsize */ | |
b34976b6 | 399 | FALSE, /* pc_relative */ |
5bd4f169 | 400 | 0, /* bitpos */ |
b80eed39 | 401 | complain_overflow_signed, /* complain_on_overflow */ |
2441e016 | 402 | ppc64_elf_branch_reloc, /* special_function */ |
5bd4f169 | 403 | "R_PPC64_ADDR14", /* name */ |
b34976b6 | 404 | FALSE, /* partial_inplace */ |
d006db6c | 405 | 0, /* src_mask */ |
f5e87a1d | 406 | 0x0000fffc, /* dst_mask */ |
b34976b6 | 407 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
408 | |
409 | /* An absolute 16 bit branch, for which bit 10 should be set to | |
410 | indicate that the branch is expected to be taken. The lower two | |
411 | bits must be zero. */ | |
412 | HOWTO (R_PPC64_ADDR14_BRTAKEN, /* type */ | |
413 | 0, /* rightshift */ | |
414 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
415 | 16, /* bitsize */ | |
b34976b6 | 416 | FALSE, /* pc_relative */ |
5bd4f169 | 417 | 0, /* bitpos */ |
b80eed39 | 418 | complain_overflow_signed, /* complain_on_overflow */ |
805fc799 | 419 | ppc64_elf_brtaken_reloc, /* special_function */ |
5bd4f169 | 420 | "R_PPC64_ADDR14_BRTAKEN",/* name */ |
b34976b6 | 421 | FALSE, /* partial_inplace */ |
d006db6c | 422 | 0, /* src_mask */ |
f5e87a1d | 423 | 0x0000fffc, /* dst_mask */ |
b34976b6 | 424 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
425 | |
426 | /* An absolute 16 bit branch, for which bit 10 should be set to | |
427 | indicate that the branch is not expected to be taken. The lower | |
428 | two bits must be zero. */ | |
429 | HOWTO (R_PPC64_ADDR14_BRNTAKEN, /* type */ | |
430 | 0, /* rightshift */ | |
431 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
432 | 16, /* bitsize */ | |
b34976b6 | 433 | FALSE, /* pc_relative */ |
5bd4f169 | 434 | 0, /* bitpos */ |
b80eed39 | 435 | complain_overflow_signed, /* complain_on_overflow */ |
805fc799 | 436 | ppc64_elf_brtaken_reloc, /* special_function */ |
5bd4f169 | 437 | "R_PPC64_ADDR14_BRNTAKEN",/* name */ |
b34976b6 | 438 | FALSE, /* partial_inplace */ |
d006db6c | 439 | 0, /* src_mask */ |
f5e87a1d | 440 | 0x0000fffc, /* dst_mask */ |
b34976b6 | 441 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
442 | |
443 | /* A relative 26 bit branch; the lower two bits must be zero. */ | |
444 | HOWTO (R_PPC64_REL24, /* type */ | |
445 | 0, /* rightshift */ | |
446 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
447 | 26, /* bitsize */ | |
b34976b6 | 448 | TRUE, /* pc_relative */ |
5bd4f169 AM |
449 | 0, /* bitpos */ |
450 | complain_overflow_signed, /* complain_on_overflow */ | |
2441e016 | 451 | ppc64_elf_branch_reloc, /* special_function */ |
5bd4f169 | 452 | "R_PPC64_REL24", /* name */ |
b34976b6 | 453 | FALSE, /* partial_inplace */ |
d006db6c | 454 | 0, /* src_mask */ |
f5e87a1d | 455 | 0x03fffffc, /* dst_mask */ |
b34976b6 | 456 | TRUE), /* pcrel_offset */ |
5bd4f169 | 457 | |
05d0e962 AM |
458 | /* A variant of R_PPC64_REL24, used when r2 is not the toc pointer. */ |
459 | HOWTO (R_PPC64_REL24_NOTOC, /* type */ | |
460 | 0, /* rightshift */ | |
461 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
462 | 26, /* bitsize */ | |
463 | TRUE, /* pc_relative */ | |
464 | 0, /* bitpos */ | |
465 | complain_overflow_signed, /* complain_on_overflow */ | |
466 | ppc64_elf_branch_reloc, /* special_function */ | |
467 | "R_PPC64_REL24_NOTOC", /* name */ | |
468 | FALSE, /* partial_inplace */ | |
469 | 0, /* src_mask */ | |
470 | 0x03fffffc, /* dst_mask */ | |
471 | TRUE), /* pcrel_offset */ | |
472 | ||
5bd4f169 AM |
473 | /* A relative 16 bit branch; the lower two bits must be zero. */ |
474 | HOWTO (R_PPC64_REL14, /* type */ | |
475 | 0, /* rightshift */ | |
476 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
477 | 16, /* bitsize */ | |
b34976b6 | 478 | TRUE, /* pc_relative */ |
5bd4f169 AM |
479 | 0, /* bitpos */ |
480 | complain_overflow_signed, /* complain_on_overflow */ | |
2441e016 | 481 | ppc64_elf_branch_reloc, /* special_function */ |
5bd4f169 | 482 | "R_PPC64_REL14", /* name */ |
b34976b6 | 483 | FALSE, /* partial_inplace */ |
d006db6c | 484 | 0, /* src_mask */ |
f5e87a1d | 485 | 0x0000fffc, /* dst_mask */ |
b34976b6 | 486 | TRUE), /* pcrel_offset */ |
5bd4f169 AM |
487 | |
488 | /* A relative 16 bit branch. Bit 10 should be set to indicate that | |
489 | the branch is expected to be taken. The lower two bits must be | |
490 | zero. */ | |
491 | HOWTO (R_PPC64_REL14_BRTAKEN, /* type */ | |
492 | 0, /* rightshift */ | |
493 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
494 | 16, /* bitsize */ | |
b34976b6 | 495 | TRUE, /* pc_relative */ |
5bd4f169 AM |
496 | 0, /* bitpos */ |
497 | complain_overflow_signed, /* complain_on_overflow */ | |
805fc799 | 498 | ppc64_elf_brtaken_reloc, /* special_function */ |
5bd4f169 | 499 | "R_PPC64_REL14_BRTAKEN", /* name */ |
b34976b6 | 500 | FALSE, /* partial_inplace */ |
d006db6c | 501 | 0, /* src_mask */ |
f5e87a1d | 502 | 0x0000fffc, /* dst_mask */ |
b34976b6 | 503 | TRUE), /* pcrel_offset */ |
5bd4f169 AM |
504 | |
505 | /* A relative 16 bit branch. Bit 10 should be set to indicate that | |
506 | the branch is not expected to be taken. The lower two bits must | |
507 | be zero. */ | |
508 | HOWTO (R_PPC64_REL14_BRNTAKEN, /* type */ | |
509 | 0, /* rightshift */ | |
510 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
511 | 16, /* bitsize */ | |
b34976b6 | 512 | TRUE, /* pc_relative */ |
5bd4f169 AM |
513 | 0, /* bitpos */ |
514 | complain_overflow_signed, /* complain_on_overflow */ | |
805fc799 | 515 | ppc64_elf_brtaken_reloc, /* special_function */ |
5bd4f169 | 516 | "R_PPC64_REL14_BRNTAKEN",/* name */ |
b34976b6 | 517 | FALSE, /* partial_inplace */ |
d006db6c | 518 | 0, /* src_mask */ |
f5e87a1d | 519 | 0x0000fffc, /* dst_mask */ |
b34976b6 | 520 | TRUE), /* pcrel_offset */ |
5bd4f169 AM |
521 | |
522 | /* Like R_PPC64_ADDR16, but referring to the GOT table entry for the | |
523 | symbol. */ | |
524 | HOWTO (R_PPC64_GOT16, /* type */ | |
525 | 0, /* rightshift */ | |
526 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
527 | 16, /* bitsize */ | |
b34976b6 | 528 | FALSE, /* pc_relative */ |
5bd4f169 AM |
529 | 0, /* bitpos */ |
530 | complain_overflow_signed, /* complain_on_overflow */ | |
805fc799 | 531 | ppc64_elf_unhandled_reloc, /* special_function */ |
5bd4f169 | 532 | "R_PPC64_GOT16", /* name */ |
b34976b6 | 533 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
534 | 0, /* src_mask */ |
535 | 0xffff, /* dst_mask */ | |
b34976b6 | 536 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
537 | |
538 | /* Like R_PPC64_ADDR16_LO, but referring to the GOT table entry for | |
539 | the symbol. */ | |
540 | HOWTO (R_PPC64_GOT16_LO, /* type */ | |
541 | 0, /* rightshift */ | |
542 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
543 | 16, /* bitsize */ | |
b34976b6 | 544 | FALSE, /* pc_relative */ |
5bd4f169 AM |
545 | 0, /* bitpos */ |
546 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 547 | ppc64_elf_unhandled_reloc, /* special_function */ |
5bd4f169 | 548 | "R_PPC64_GOT16_LO", /* name */ |
b34976b6 | 549 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
550 | 0, /* src_mask */ |
551 | 0xffff, /* dst_mask */ | |
b34976b6 | 552 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
553 | |
554 | /* Like R_PPC64_ADDR16_HI, but referring to the GOT table entry for | |
555 | the symbol. */ | |
556 | HOWTO (R_PPC64_GOT16_HI, /* type */ | |
557 | 16, /* rightshift */ | |
558 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
559 | 16, /* bitsize */ | |
b34976b6 | 560 | FALSE, /* pc_relative */ |
5bd4f169 | 561 | 0, /* bitpos */ |
f9c6b907 | 562 | complain_overflow_signed,/* complain_on_overflow */ |
805fc799 | 563 | ppc64_elf_unhandled_reloc, /* special_function */ |
5bd4f169 | 564 | "R_PPC64_GOT16_HI", /* name */ |
b34976b6 | 565 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
566 | 0, /* src_mask */ |
567 | 0xffff, /* dst_mask */ | |
b34976b6 | 568 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
569 | |
570 | /* Like R_PPC64_ADDR16_HA, but referring to the GOT table entry for | |
571 | the symbol. */ | |
572 | HOWTO (R_PPC64_GOT16_HA, /* type */ | |
573 | 16, /* rightshift */ | |
574 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
575 | 16, /* bitsize */ | |
b34976b6 | 576 | FALSE, /* pc_relative */ |
5bd4f169 | 577 | 0, /* bitpos */ |
f9c6b907 | 578 | complain_overflow_signed,/* complain_on_overflow */ |
805fc799 | 579 | ppc64_elf_unhandled_reloc, /* special_function */ |
5bd4f169 | 580 | "R_PPC64_GOT16_HA", /* name */ |
b34976b6 | 581 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
582 | 0, /* src_mask */ |
583 | 0xffff, /* dst_mask */ | |
b34976b6 | 584 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
585 | |
586 | /* This is used only by the dynamic linker. The symbol should exist | |
587 | both in the object being run and in some shared library. The | |
588 | dynamic linker copies the data addressed by the symbol from the | |
589 | shared library into the object, because the object being | |
590 | run has to have the data at some particular address. */ | |
591 | HOWTO (R_PPC64_COPY, /* type */ | |
592 | 0, /* rightshift */ | |
f5e87a1d AM |
593 | 0, /* this one is variable size */ |
594 | 0, /* bitsize */ | |
b34976b6 | 595 | FALSE, /* pc_relative */ |
5bd4f169 | 596 | 0, /* bitpos */ |
f5e87a1d AM |
597 | complain_overflow_dont, /* complain_on_overflow */ |
598 | ppc64_elf_unhandled_reloc, /* special_function */ | |
5bd4f169 | 599 | "R_PPC64_COPY", /* name */ |
b34976b6 | 600 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
601 | 0, /* src_mask */ |
602 | 0, /* dst_mask */ | |
b34976b6 | 603 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
604 | |
605 | /* Like R_PPC64_ADDR64, but used when setting global offset table | |
606 | entries. */ | |
607 | HOWTO (R_PPC64_GLOB_DAT, /* type */ | |
608 | 0, /* rightshift */ | |
609 | 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */ | |
610 | 64, /* bitsize */ | |
b34976b6 | 611 | FALSE, /* pc_relative */ |
5bd4f169 AM |
612 | 0, /* bitpos */ |
613 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 614 | ppc64_elf_unhandled_reloc, /* special_function */ |
5bd4f169 | 615 | "R_PPC64_GLOB_DAT", /* name */ |
b34976b6 | 616 | FALSE, /* partial_inplace */ |
5bd4f169 | 617 | 0, /* src_mask */ |
f5e87a1d | 618 | ONES (64), /* dst_mask */ |
b34976b6 | 619 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
620 | |
621 | /* Created by the link editor. Marks a procedure linkage table | |
622 | entry for a symbol. */ | |
623 | HOWTO (R_PPC64_JMP_SLOT, /* type */ | |
624 | 0, /* rightshift */ | |
625 | 0, /* size (0 = byte, 1 = short, 2 = long) */ | |
626 | 0, /* bitsize */ | |
b34976b6 | 627 | FALSE, /* pc_relative */ |
5bd4f169 AM |
628 | 0, /* bitpos */ |
629 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 630 | ppc64_elf_unhandled_reloc, /* special_function */ |
5bd4f169 | 631 | "R_PPC64_JMP_SLOT", /* name */ |
b34976b6 | 632 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
633 | 0, /* src_mask */ |
634 | 0, /* dst_mask */ | |
b34976b6 | 635 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
636 | |
637 | /* Used only by the dynamic linker. When the object is run, this | |
638 | doubleword64 is set to the load address of the object, plus the | |
639 | addend. */ | |
640 | HOWTO (R_PPC64_RELATIVE, /* type */ | |
641 | 0, /* rightshift */ | |
642 | 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */ | |
643 | 64, /* bitsize */ | |
b34976b6 | 644 | FALSE, /* pc_relative */ |
5bd4f169 AM |
645 | 0, /* bitpos */ |
646 | complain_overflow_dont, /* complain_on_overflow */ | |
647 | bfd_elf_generic_reloc, /* special_function */ | |
648 | "R_PPC64_RELATIVE", /* name */ | |
b34976b6 | 649 | FALSE, /* partial_inplace */ |
5bd4f169 | 650 | 0, /* src_mask */ |
f5e87a1d | 651 | ONES (64), /* dst_mask */ |
b34976b6 | 652 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
653 | |
654 | /* Like R_PPC64_ADDR32, but may be unaligned. */ | |
655 | HOWTO (R_PPC64_UADDR32, /* type */ | |
656 | 0, /* rightshift */ | |
657 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
658 | 32, /* bitsize */ | |
b34976b6 | 659 | FALSE, /* pc_relative */ |
5bd4f169 AM |
660 | 0, /* bitpos */ |
661 | complain_overflow_bitfield, /* complain_on_overflow */ | |
662 | bfd_elf_generic_reloc, /* special_function */ | |
663 | "R_PPC64_UADDR32", /* name */ | |
b34976b6 | 664 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
665 | 0, /* src_mask */ |
666 | 0xffffffff, /* dst_mask */ | |
b34976b6 | 667 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
668 | |
669 | /* Like R_PPC64_ADDR16, but may be unaligned. */ | |
670 | HOWTO (R_PPC64_UADDR16, /* type */ | |
671 | 0, /* rightshift */ | |
672 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
673 | 16, /* bitsize */ | |
b34976b6 | 674 | FALSE, /* pc_relative */ |
5bd4f169 AM |
675 | 0, /* bitpos */ |
676 | complain_overflow_bitfield, /* complain_on_overflow */ | |
677 | bfd_elf_generic_reloc, /* special_function */ | |
678 | "R_PPC64_UADDR16", /* name */ | |
b34976b6 | 679 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
680 | 0, /* src_mask */ |
681 | 0xffff, /* dst_mask */ | |
b34976b6 | 682 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
683 | |
684 | /* 32-bit PC relative. */ | |
685 | HOWTO (R_PPC64_REL32, /* type */ | |
686 | 0, /* rightshift */ | |
687 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
688 | 32, /* bitsize */ | |
b34976b6 | 689 | TRUE, /* pc_relative */ |
5bd4f169 | 690 | 0, /* bitpos */ |
5bd4f169 AM |
691 | complain_overflow_signed, /* complain_on_overflow */ |
692 | bfd_elf_generic_reloc, /* special_function */ | |
693 | "R_PPC64_REL32", /* name */ | |
b34976b6 | 694 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
695 | 0, /* src_mask */ |
696 | 0xffffffff, /* dst_mask */ | |
b34976b6 | 697 | TRUE), /* pcrel_offset */ |
5bd4f169 | 698 | |
10ed1bba | 699 | /* 32-bit relocation to the symbol's procedure linkage table. */ |
5bd4f169 AM |
700 | HOWTO (R_PPC64_PLT32, /* type */ |
701 | 0, /* rightshift */ | |
702 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
703 | 32, /* bitsize */ | |
b34976b6 | 704 | FALSE, /* pc_relative */ |
5bd4f169 AM |
705 | 0, /* bitpos */ |
706 | complain_overflow_bitfield, /* complain_on_overflow */ | |
805fc799 | 707 | ppc64_elf_unhandled_reloc, /* special_function */ |
5bd4f169 | 708 | "R_PPC64_PLT32", /* name */ |
b34976b6 | 709 | FALSE, /* partial_inplace */ |
5bd4f169 | 710 | 0, /* src_mask */ |
f5e87a1d | 711 | 0xffffffff, /* dst_mask */ |
b34976b6 | 712 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
713 | |
714 | /* 32-bit PC relative relocation to the symbol's procedure linkage table. | |
715 | FIXME: R_PPC64_PLTREL32 not supported. */ | |
716 | HOWTO (R_PPC64_PLTREL32, /* type */ | |
717 | 0, /* rightshift */ | |
718 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
719 | 32, /* bitsize */ | |
b34976b6 | 720 | TRUE, /* pc_relative */ |
5bd4f169 AM |
721 | 0, /* bitpos */ |
722 | complain_overflow_signed, /* complain_on_overflow */ | |
3ce51288 | 723 | ppc64_elf_unhandled_reloc, /* special_function */ |
5bd4f169 | 724 | "R_PPC64_PLTREL32", /* name */ |
b34976b6 | 725 | FALSE, /* partial_inplace */ |
5bd4f169 | 726 | 0, /* src_mask */ |
f5e87a1d | 727 | 0xffffffff, /* dst_mask */ |
b34976b6 | 728 | TRUE), /* pcrel_offset */ |
5bd4f169 AM |
729 | |
730 | /* Like R_PPC64_ADDR16_LO, but referring to the PLT table entry for | |
731 | the symbol. */ | |
732 | HOWTO (R_PPC64_PLT16_LO, /* type */ | |
733 | 0, /* rightshift */ | |
734 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
735 | 16, /* bitsize */ | |
b34976b6 | 736 | FALSE, /* pc_relative */ |
5bd4f169 AM |
737 | 0, /* bitpos */ |
738 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 739 | ppc64_elf_unhandled_reloc, /* special_function */ |
5bd4f169 | 740 | "R_PPC64_PLT16_LO", /* name */ |
b34976b6 | 741 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
742 | 0, /* src_mask */ |
743 | 0xffff, /* dst_mask */ | |
b34976b6 | 744 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
745 | |
746 | /* Like R_PPC64_ADDR16_HI, but referring to the PLT table entry for | |
747 | the symbol. */ | |
748 | HOWTO (R_PPC64_PLT16_HI, /* type */ | |
749 | 16, /* rightshift */ | |
750 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
751 | 16, /* bitsize */ | |
b34976b6 | 752 | FALSE, /* pc_relative */ |
5bd4f169 | 753 | 0, /* bitpos */ |
f9c6b907 | 754 | complain_overflow_signed, /* complain_on_overflow */ |
805fc799 | 755 | ppc64_elf_unhandled_reloc, /* special_function */ |
5bd4f169 | 756 | "R_PPC64_PLT16_HI", /* name */ |
b34976b6 | 757 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
758 | 0, /* src_mask */ |
759 | 0xffff, /* dst_mask */ | |
b34976b6 | 760 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
761 | |
762 | /* Like R_PPC64_ADDR16_HA, but referring to the PLT table entry for | |
763 | the symbol. */ | |
764 | HOWTO (R_PPC64_PLT16_HA, /* type */ | |
765 | 16, /* rightshift */ | |
766 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
767 | 16, /* bitsize */ | |
b34976b6 | 768 | FALSE, /* pc_relative */ |
5bd4f169 | 769 | 0, /* bitpos */ |
f9c6b907 | 770 | complain_overflow_signed, /* complain_on_overflow */ |
805fc799 | 771 | ppc64_elf_unhandled_reloc, /* special_function */ |
5bd4f169 | 772 | "R_PPC64_PLT16_HA", /* name */ |
b34976b6 | 773 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
774 | 0, /* src_mask */ |
775 | 0xffff, /* dst_mask */ | |
b34976b6 | 776 | FALSE), /* pcrel_offset */ |
5bd4f169 | 777 | |
c061c2d8 | 778 | /* 16-bit section relative relocation. */ |
5bd4f169 AM |
779 | HOWTO (R_PPC64_SECTOFF, /* type */ |
780 | 0, /* rightshift */ | |
c061c2d8 AM |
781 | 1, /* size (0 = byte, 1 = short, 2 = long) */ |
782 | 16, /* bitsize */ | |
b34976b6 | 783 | FALSE, /* pc_relative */ |
5bd4f169 | 784 | 0, /* bitpos */ |
b80eed39 | 785 | complain_overflow_signed, /* complain_on_overflow */ |
805fc799 | 786 | ppc64_elf_sectoff_reloc, /* special_function */ |
5bd4f169 | 787 | "R_PPC64_SECTOFF", /* name */ |
b34976b6 | 788 | FALSE, /* partial_inplace */ |
5bd4f169 | 789 | 0, /* src_mask */ |
c061c2d8 | 790 | 0xffff, /* dst_mask */ |
b34976b6 | 791 | FALSE), /* pcrel_offset */ |
5bd4f169 | 792 | |
c061c2d8 | 793 | /* Like R_PPC64_SECTOFF, but no overflow warning. */ |
5bd4f169 AM |
794 | HOWTO (R_PPC64_SECTOFF_LO, /* type */ |
795 | 0, /* rightshift */ | |
796 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
797 | 16, /* bitsize */ | |
b34976b6 | 798 | FALSE, /* pc_relative */ |
5bd4f169 AM |
799 | 0, /* bitpos */ |
800 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 801 | ppc64_elf_sectoff_reloc, /* special_function */ |
5bd4f169 | 802 | "R_PPC64_SECTOFF_LO", /* name */ |
b34976b6 | 803 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
804 | 0, /* src_mask */ |
805 | 0xffff, /* dst_mask */ | |
b34976b6 | 806 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
807 | |
808 | /* 16-bit upper half section relative relocation. */ | |
809 | HOWTO (R_PPC64_SECTOFF_HI, /* type */ | |
810 | 16, /* rightshift */ | |
811 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
812 | 16, /* bitsize */ | |
b34976b6 | 813 | FALSE, /* pc_relative */ |
5bd4f169 | 814 | 0, /* bitpos */ |
f9c6b907 | 815 | complain_overflow_signed, /* complain_on_overflow */ |
805fc799 | 816 | ppc64_elf_sectoff_reloc, /* special_function */ |
5bd4f169 | 817 | "R_PPC64_SECTOFF_HI", /* name */ |
b34976b6 | 818 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
819 | 0, /* src_mask */ |
820 | 0xffff, /* dst_mask */ | |
b34976b6 | 821 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
822 | |
823 | /* 16-bit upper half adjusted section relative relocation. */ | |
824 | HOWTO (R_PPC64_SECTOFF_HA, /* type */ | |
825 | 16, /* rightshift */ | |
826 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
827 | 16, /* bitsize */ | |
b34976b6 | 828 | FALSE, /* pc_relative */ |
5bd4f169 | 829 | 0, /* bitpos */ |
f9c6b907 | 830 | complain_overflow_signed, /* complain_on_overflow */ |
805fc799 | 831 | ppc64_elf_sectoff_ha_reloc, /* special_function */ |
5bd4f169 | 832 | "R_PPC64_SECTOFF_HA", /* name */ |
b34976b6 | 833 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
834 | 0, /* src_mask */ |
835 | 0xffff, /* dst_mask */ | |
b34976b6 | 836 | FALSE), /* pcrel_offset */ |
5bd4f169 | 837 | |
04c9666a AM |
838 | /* Like R_PPC64_REL24 without touching the two least significant bits. */ |
839 | HOWTO (R_PPC64_REL30, /* type */ | |
5bd4f169 AM |
840 | 2, /* rightshift */ |
841 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
842 | 30, /* bitsize */ | |
b34976b6 | 843 | TRUE, /* pc_relative */ |
5bd4f169 AM |
844 | 0, /* bitpos */ |
845 | complain_overflow_dont, /* complain_on_overflow */ | |
846 | bfd_elf_generic_reloc, /* special_function */ | |
04c9666a | 847 | "R_PPC64_REL30", /* name */ |
b34976b6 | 848 | FALSE, /* partial_inplace */ |
d006db6c | 849 | 0, /* src_mask */ |
5bd4f169 | 850 | 0xfffffffc, /* dst_mask */ |
b34976b6 | 851 | TRUE), /* pcrel_offset */ |
5bd4f169 AM |
852 | |
853 | /* Relocs in the 64-bit PowerPC ELF ABI, not in the 32-bit ABI. */ | |
854 | ||
855 | /* A standard 64-bit relocation. */ | |
856 | HOWTO (R_PPC64_ADDR64, /* type */ | |
857 | 0, /* rightshift */ | |
858 | 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */ | |
859 | 64, /* bitsize */ | |
b34976b6 | 860 | FALSE, /* pc_relative */ |
5bd4f169 AM |
861 | 0, /* bitpos */ |
862 | complain_overflow_dont, /* complain_on_overflow */ | |
863 | bfd_elf_generic_reloc, /* special_function */ | |
864 | "R_PPC64_ADDR64", /* name */ | |
b34976b6 | 865 | FALSE, /* partial_inplace */ |
5bd4f169 | 866 | 0, /* src_mask */ |
f5e87a1d | 867 | ONES (64), /* dst_mask */ |
b34976b6 | 868 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
869 | |
870 | /* The bits 32-47 of an address. */ | |
871 | HOWTO (R_PPC64_ADDR16_HIGHER, /* type */ | |
872 | 32, /* rightshift */ | |
873 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
874 | 16, /* bitsize */ | |
b34976b6 | 875 | FALSE, /* pc_relative */ |
5bd4f169 AM |
876 | 0, /* bitpos */ |
877 | complain_overflow_dont, /* complain_on_overflow */ | |
878 | bfd_elf_generic_reloc, /* special_function */ | |
879 | "R_PPC64_ADDR16_HIGHER", /* name */ | |
b34976b6 | 880 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
881 | 0, /* src_mask */ |
882 | 0xffff, /* dst_mask */ | |
b34976b6 | 883 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
884 | |
885 | /* The bits 32-47 of an address, plus 1 if the contents of the low | |
886 | 16 bits, treated as a signed number, is negative. */ | |
887 | HOWTO (R_PPC64_ADDR16_HIGHERA, /* type */ | |
888 | 32, /* rightshift */ | |
889 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
890 | 16, /* bitsize */ | |
b34976b6 | 891 | FALSE, /* pc_relative */ |
5bd4f169 AM |
892 | 0, /* bitpos */ |
893 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 894 | ppc64_elf_ha_reloc, /* special_function */ |
5bd4f169 | 895 | "R_PPC64_ADDR16_HIGHERA", /* name */ |
b34976b6 | 896 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
897 | 0, /* src_mask */ |
898 | 0xffff, /* dst_mask */ | |
b34976b6 | 899 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
900 | |
901 | /* The bits 48-63 of an address. */ | |
902 | HOWTO (R_PPC64_ADDR16_HIGHEST,/* type */ | |
903 | 48, /* rightshift */ | |
904 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
905 | 16, /* bitsize */ | |
b34976b6 | 906 | FALSE, /* pc_relative */ |
5bd4f169 AM |
907 | 0, /* bitpos */ |
908 | complain_overflow_dont, /* complain_on_overflow */ | |
909 | bfd_elf_generic_reloc, /* special_function */ | |
910 | "R_PPC64_ADDR16_HIGHEST", /* name */ | |
b34976b6 | 911 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
912 | 0, /* src_mask */ |
913 | 0xffff, /* dst_mask */ | |
b34976b6 | 914 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
915 | |
916 | /* The bits 48-63 of an address, plus 1 if the contents of the low | |
917 | 16 bits, treated as a signed number, is negative. */ | |
918 | HOWTO (R_PPC64_ADDR16_HIGHESTA,/* type */ | |
919 | 48, /* rightshift */ | |
920 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
921 | 16, /* bitsize */ | |
b34976b6 | 922 | FALSE, /* pc_relative */ |
5bd4f169 AM |
923 | 0, /* bitpos */ |
924 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 925 | ppc64_elf_ha_reloc, /* special_function */ |
5bd4f169 | 926 | "R_PPC64_ADDR16_HIGHESTA", /* name */ |
b34976b6 | 927 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
928 | 0, /* src_mask */ |
929 | 0xffff, /* dst_mask */ | |
b34976b6 | 930 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
931 | |
932 | /* Like ADDR64, but may be unaligned. */ | |
933 | HOWTO (R_PPC64_UADDR64, /* type */ | |
934 | 0, /* rightshift */ | |
935 | 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */ | |
936 | 64, /* bitsize */ | |
b34976b6 | 937 | FALSE, /* pc_relative */ |
5bd4f169 AM |
938 | 0, /* bitpos */ |
939 | complain_overflow_dont, /* complain_on_overflow */ | |
940 | bfd_elf_generic_reloc, /* special_function */ | |
941 | "R_PPC64_UADDR64", /* name */ | |
b34976b6 | 942 | FALSE, /* partial_inplace */ |
5bd4f169 | 943 | 0, /* src_mask */ |
f5e87a1d | 944 | ONES (64), /* dst_mask */ |
b34976b6 | 945 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
946 | |
947 | /* 64-bit relative relocation. */ | |
948 | HOWTO (R_PPC64_REL64, /* type */ | |
949 | 0, /* rightshift */ | |
950 | 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */ | |
951 | 64, /* bitsize */ | |
b34976b6 | 952 | TRUE, /* pc_relative */ |
5bd4f169 AM |
953 | 0, /* bitpos */ |
954 | complain_overflow_dont, /* complain_on_overflow */ | |
955 | bfd_elf_generic_reloc, /* special_function */ | |
956 | "R_PPC64_REL64", /* name */ | |
b34976b6 | 957 | FALSE, /* partial_inplace */ |
5bd4f169 | 958 | 0, /* src_mask */ |
f5e87a1d | 959 | ONES (64), /* dst_mask */ |
b34976b6 | 960 | TRUE), /* pcrel_offset */ |
5bd4f169 | 961 | |
cedb70c5 | 962 | /* 64-bit relocation to the symbol's procedure linkage table. */ |
5bd4f169 AM |
963 | HOWTO (R_PPC64_PLT64, /* type */ |
964 | 0, /* rightshift */ | |
965 | 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */ | |
966 | 64, /* bitsize */ | |
b34976b6 | 967 | FALSE, /* pc_relative */ |
5bd4f169 AM |
968 | 0, /* bitpos */ |
969 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 970 | ppc64_elf_unhandled_reloc, /* special_function */ |
5bd4f169 | 971 | "R_PPC64_PLT64", /* name */ |
b34976b6 | 972 | FALSE, /* partial_inplace */ |
5bd4f169 | 973 | 0, /* src_mask */ |
f5e87a1d | 974 | ONES (64), /* dst_mask */ |
b34976b6 | 975 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
976 | |
977 | /* 64-bit PC relative relocation to the symbol's procedure linkage | |
978 | table. */ | |
979 | /* FIXME: R_PPC64_PLTREL64 not supported. */ | |
980 | HOWTO (R_PPC64_PLTREL64, /* type */ | |
981 | 0, /* rightshift */ | |
982 | 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */ | |
983 | 64, /* bitsize */ | |
b34976b6 | 984 | TRUE, /* pc_relative */ |
5bd4f169 AM |
985 | 0, /* bitpos */ |
986 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 987 | ppc64_elf_unhandled_reloc, /* special_function */ |
5bd4f169 | 988 | "R_PPC64_PLTREL64", /* name */ |
b34976b6 | 989 | FALSE, /* partial_inplace */ |
5bd4f169 | 990 | 0, /* src_mask */ |
f5e87a1d | 991 | ONES (64), /* dst_mask */ |
b34976b6 | 992 | TRUE), /* pcrel_offset */ |
5bd4f169 AM |
993 | |
994 | /* 16 bit TOC-relative relocation. */ | |
995 | ||
996 | /* R_PPC64_TOC16 47 half16* S + A - .TOC. */ | |
997 | HOWTO (R_PPC64_TOC16, /* type */ | |
998 | 0, /* rightshift */ | |
999 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1000 | 16, /* bitsize */ | |
b34976b6 | 1001 | FALSE, /* pc_relative */ |
5bd4f169 AM |
1002 | 0, /* bitpos */ |
1003 | complain_overflow_signed, /* complain_on_overflow */ | |
805fc799 | 1004 | ppc64_elf_toc_reloc, /* special_function */ |
5bd4f169 | 1005 | "R_PPC64_TOC16", /* name */ |
b34976b6 | 1006 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
1007 | 0, /* src_mask */ |
1008 | 0xffff, /* dst_mask */ | |
b34976b6 | 1009 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
1010 | |
1011 | /* 16 bit TOC-relative relocation without overflow. */ | |
1012 | ||
1013 | /* R_PPC64_TOC16_LO 48 half16 #lo (S + A - .TOC.) */ | |
1014 | HOWTO (R_PPC64_TOC16_LO, /* type */ | |
1015 | 0, /* rightshift */ | |
1016 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1017 | 16, /* bitsize */ | |
b34976b6 | 1018 | FALSE, /* pc_relative */ |
5bd4f169 AM |
1019 | 0, /* bitpos */ |
1020 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 1021 | ppc64_elf_toc_reloc, /* special_function */ |
5bd4f169 | 1022 | "R_PPC64_TOC16_LO", /* name */ |
b34976b6 | 1023 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
1024 | 0, /* src_mask */ |
1025 | 0xffff, /* dst_mask */ | |
b34976b6 | 1026 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
1027 | |
1028 | /* 16 bit TOC-relative relocation, high 16 bits. */ | |
1029 | ||
1030 | /* R_PPC64_TOC16_HI 49 half16 #hi (S + A - .TOC.) */ | |
1031 | HOWTO (R_PPC64_TOC16_HI, /* type */ | |
1032 | 16, /* rightshift */ | |
1033 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1034 | 16, /* bitsize */ | |
b34976b6 | 1035 | FALSE, /* pc_relative */ |
5bd4f169 | 1036 | 0, /* bitpos */ |
f9c6b907 | 1037 | complain_overflow_signed, /* complain_on_overflow */ |
805fc799 | 1038 | ppc64_elf_toc_reloc, /* special_function */ |
5bd4f169 | 1039 | "R_PPC64_TOC16_HI", /* name */ |
b34976b6 | 1040 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
1041 | 0, /* src_mask */ |
1042 | 0xffff, /* dst_mask */ | |
b34976b6 | 1043 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
1044 | |
1045 | /* 16 bit TOC-relative relocation, high 16 bits, plus 1 if the | |
1046 | contents of the low 16 bits, treated as a signed number, is | |
1047 | negative. */ | |
1048 | ||
1049 | /* R_PPC64_TOC16_HA 50 half16 #ha (S + A - .TOC.) */ | |
1050 | HOWTO (R_PPC64_TOC16_HA, /* type */ | |
1051 | 16, /* rightshift */ | |
1052 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1053 | 16, /* bitsize */ | |
b34976b6 | 1054 | FALSE, /* pc_relative */ |
5bd4f169 | 1055 | 0, /* bitpos */ |
f9c6b907 | 1056 | complain_overflow_signed, /* complain_on_overflow */ |
805fc799 | 1057 | ppc64_elf_toc_ha_reloc, /* special_function */ |
5bd4f169 | 1058 | "R_PPC64_TOC16_HA", /* name */ |
b34976b6 | 1059 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
1060 | 0, /* src_mask */ |
1061 | 0xffff, /* dst_mask */ | |
b34976b6 | 1062 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
1063 | |
1064 | /* 64-bit relocation; insert value of TOC base (.TOC.). */ | |
1065 | ||
1066 | /* R_PPC64_TOC 51 doubleword64 .TOC. */ | |
1067 | HOWTO (R_PPC64_TOC, /* type */ | |
1068 | 0, /* rightshift */ | |
1069 | 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */ | |
1070 | 64, /* bitsize */ | |
b34976b6 | 1071 | FALSE, /* pc_relative */ |
5bd4f169 | 1072 | 0, /* bitpos */ |
b80eed39 | 1073 | complain_overflow_dont, /* complain_on_overflow */ |
805fc799 | 1074 | ppc64_elf_toc64_reloc, /* special_function */ |
5bd4f169 | 1075 | "R_PPC64_TOC", /* name */ |
b34976b6 | 1076 | FALSE, /* partial_inplace */ |
5bd4f169 | 1077 | 0, /* src_mask */ |
f5e87a1d | 1078 | ONES (64), /* dst_mask */ |
b34976b6 | 1079 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
1080 | |
1081 | /* Like R_PPC64_GOT16, but also informs the link editor that the | |
1082 | value to relocate may (!) refer to a PLT entry which the link | |
1083 | editor (a) may replace with the symbol value. If the link editor | |
1084 | is unable to fully resolve the symbol, it may (b) create a PLT | |
1085 | entry and store the address to the new PLT entry in the GOT. | |
1086 | This permits lazy resolution of function symbols at run time. | |
1087 | The link editor may also skip all of this and just (c) emit a | |
1088 | R_PPC64_GLOB_DAT to tie the symbol to the GOT entry. */ | |
1089 | /* FIXME: R_PPC64_PLTGOT16 not implemented. */ | |
1090 | HOWTO (R_PPC64_PLTGOT16, /* type */ | |
1091 | 0, /* rightshift */ | |
1092 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1093 | 16, /* bitsize */ | |
b34976b6 | 1094 | FALSE, /* pc_relative */ |
5bd4f169 AM |
1095 | 0, /* bitpos */ |
1096 | complain_overflow_signed, /* complain_on_overflow */ | |
805fc799 | 1097 | ppc64_elf_unhandled_reloc, /* special_function */ |
411e1bfb AM |
1098 | "R_PPC64_PLTGOT16", /* name */ |
1099 | FALSE, /* partial_inplace */ | |
1100 | 0, /* src_mask */ | |
1101 | 0xffff, /* dst_mask */ | |
1102 | FALSE), /* pcrel_offset */ | |
1103 | ||
1104 | /* Like R_PPC64_PLTGOT16, but without overflow. */ | |
1105 | /* FIXME: R_PPC64_PLTGOT16_LO not implemented. */ | |
1106 | HOWTO (R_PPC64_PLTGOT16_LO, /* type */ | |
1107 | 0, /* rightshift */ | |
1108 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1109 | 16, /* bitsize */ | |
1110 | FALSE, /* pc_relative */ | |
1111 | 0, /* bitpos */ | |
1112 | complain_overflow_dont, /* complain_on_overflow */ | |
1113 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1114 | "R_PPC64_PLTGOT16_LO", /* name */ | |
1115 | FALSE, /* partial_inplace */ | |
1116 | 0, /* src_mask */ | |
1117 | 0xffff, /* dst_mask */ | |
1118 | FALSE), /* pcrel_offset */ | |
1119 | ||
1120 | /* Like R_PPC64_PLT_GOT16, but using bits 16-31 of the address. */ | |
1121 | /* FIXME: R_PPC64_PLTGOT16_HI not implemented. */ | |
1122 | HOWTO (R_PPC64_PLTGOT16_HI, /* type */ | |
1123 | 16, /* rightshift */ | |
1124 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1125 | 16, /* bitsize */ | |
1126 | FALSE, /* pc_relative */ | |
1127 | 0, /* bitpos */ | |
f9c6b907 | 1128 | complain_overflow_signed, /* complain_on_overflow */ |
411e1bfb AM |
1129 | ppc64_elf_unhandled_reloc, /* special_function */ |
1130 | "R_PPC64_PLTGOT16_HI", /* name */ | |
1131 | FALSE, /* partial_inplace */ | |
1132 | 0, /* src_mask */ | |
1133 | 0xffff, /* dst_mask */ | |
1134 | FALSE), /* pcrel_offset */ | |
1135 | ||
1136 | /* Like R_PPC64_PLT_GOT16, but using bits 16-31 of the address, plus | |
1137 | 1 if the contents of the low 16 bits, treated as a signed number, | |
1138 | is negative. */ | |
1139 | /* FIXME: R_PPC64_PLTGOT16_HA not implemented. */ | |
1140 | HOWTO (R_PPC64_PLTGOT16_HA, /* type */ | |
1141 | 16, /* rightshift */ | |
1142 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1143 | 16, /* bitsize */ | |
1144 | FALSE, /* pc_relative */ | |
1145 | 0, /* bitpos */ | |
f9c6b907 | 1146 | complain_overflow_signed, /* complain_on_overflow */ |
411e1bfb AM |
1147 | ppc64_elf_unhandled_reloc, /* special_function */ |
1148 | "R_PPC64_PLTGOT16_HA", /* name */ | |
1149 | FALSE, /* partial_inplace */ | |
1150 | 0, /* src_mask */ | |
1151 | 0xffff, /* dst_mask */ | |
1152 | FALSE), /* pcrel_offset */ | |
1153 | ||
1154 | /* Like R_PPC64_ADDR16, but for instructions with a DS field. */ | |
1155 | HOWTO (R_PPC64_ADDR16_DS, /* type */ | |
1156 | 0, /* rightshift */ | |
1157 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1158 | 16, /* bitsize */ | |
1159 | FALSE, /* pc_relative */ | |
1160 | 0, /* bitpos */ | |
b80eed39 | 1161 | complain_overflow_signed, /* complain_on_overflow */ |
411e1bfb AM |
1162 | bfd_elf_generic_reloc, /* special_function */ |
1163 | "R_PPC64_ADDR16_DS", /* name */ | |
1164 | FALSE, /* partial_inplace */ | |
1165 | 0, /* src_mask */ | |
1166 | 0xfffc, /* dst_mask */ | |
1167 | FALSE), /* pcrel_offset */ | |
1168 | ||
1169 | /* Like R_PPC64_ADDR16_LO, but for instructions with a DS field. */ | |
1170 | HOWTO (R_PPC64_ADDR16_LO_DS, /* type */ | |
1171 | 0, /* rightshift */ | |
1172 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1173 | 16, /* bitsize */ | |
1174 | FALSE, /* pc_relative */ | |
1175 | 0, /* bitpos */ | |
1176 | complain_overflow_dont,/* complain_on_overflow */ | |
1177 | bfd_elf_generic_reloc, /* special_function */ | |
1178 | "R_PPC64_ADDR16_LO_DS",/* name */ | |
1179 | FALSE, /* partial_inplace */ | |
1180 | 0, /* src_mask */ | |
1181 | 0xfffc, /* dst_mask */ | |
1182 | FALSE), /* pcrel_offset */ | |
1183 | ||
1184 | /* Like R_PPC64_GOT16, but for instructions with a DS field. */ | |
1185 | HOWTO (R_PPC64_GOT16_DS, /* type */ | |
1186 | 0, /* rightshift */ | |
1187 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1188 | 16, /* bitsize */ | |
1189 | FALSE, /* pc_relative */ | |
1190 | 0, /* bitpos */ | |
1191 | complain_overflow_signed, /* complain_on_overflow */ | |
1192 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1193 | "R_PPC64_GOT16_DS", /* name */ | |
1194 | FALSE, /* partial_inplace */ | |
1195 | 0, /* src_mask */ | |
1196 | 0xfffc, /* dst_mask */ | |
1197 | FALSE), /* pcrel_offset */ | |
1198 | ||
1199 | /* Like R_PPC64_GOT16_LO, but for instructions with a DS field. */ | |
1200 | HOWTO (R_PPC64_GOT16_LO_DS, /* type */ | |
1201 | 0, /* rightshift */ | |
1202 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1203 | 16, /* bitsize */ | |
1204 | FALSE, /* pc_relative */ | |
1205 | 0, /* bitpos */ | |
1206 | complain_overflow_dont, /* complain_on_overflow */ | |
1207 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1208 | "R_PPC64_GOT16_LO_DS", /* name */ | |
1209 | FALSE, /* partial_inplace */ | |
1210 | 0, /* src_mask */ | |
1211 | 0xfffc, /* dst_mask */ | |
1212 | FALSE), /* pcrel_offset */ | |
1213 | ||
1214 | /* Like R_PPC64_PLT16_LO, but for instructions with a DS field. */ | |
1215 | HOWTO (R_PPC64_PLT16_LO_DS, /* type */ | |
1216 | 0, /* rightshift */ | |
1217 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1218 | 16, /* bitsize */ | |
1219 | FALSE, /* pc_relative */ | |
1220 | 0, /* bitpos */ | |
1221 | complain_overflow_dont, /* complain_on_overflow */ | |
1222 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1223 | "R_PPC64_PLT16_LO_DS", /* name */ | |
1224 | FALSE, /* partial_inplace */ | |
1225 | 0, /* src_mask */ | |
1226 | 0xfffc, /* dst_mask */ | |
1227 | FALSE), /* pcrel_offset */ | |
1228 | ||
1229 | /* Like R_PPC64_SECTOFF, but for instructions with a DS field. */ | |
1230 | HOWTO (R_PPC64_SECTOFF_DS, /* type */ | |
1231 | 0, /* rightshift */ | |
1232 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1233 | 16, /* bitsize */ | |
1234 | FALSE, /* pc_relative */ | |
1235 | 0, /* bitpos */ | |
b80eed39 | 1236 | complain_overflow_signed, /* complain_on_overflow */ |
411e1bfb AM |
1237 | ppc64_elf_sectoff_reloc, /* special_function */ |
1238 | "R_PPC64_SECTOFF_DS", /* name */ | |
1239 | FALSE, /* partial_inplace */ | |
1240 | 0, /* src_mask */ | |
1241 | 0xfffc, /* dst_mask */ | |
1242 | FALSE), /* pcrel_offset */ | |
1243 | ||
1244 | /* Like R_PPC64_SECTOFF_LO, but for instructions with a DS field. */ | |
1245 | HOWTO (R_PPC64_SECTOFF_LO_DS, /* type */ | |
1246 | 0, /* rightshift */ | |
1247 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1248 | 16, /* bitsize */ | |
1249 | FALSE, /* pc_relative */ | |
1250 | 0, /* bitpos */ | |
1251 | complain_overflow_dont, /* complain_on_overflow */ | |
1252 | ppc64_elf_sectoff_reloc, /* special_function */ | |
1253 | "R_PPC64_SECTOFF_LO_DS",/* name */ | |
1254 | FALSE, /* partial_inplace */ | |
1255 | 0, /* src_mask */ | |
1256 | 0xfffc, /* dst_mask */ | |
1257 | FALSE), /* pcrel_offset */ | |
1258 | ||
1259 | /* Like R_PPC64_TOC16, but for instructions with a DS field. */ | |
1260 | HOWTO (R_PPC64_TOC16_DS, /* type */ | |
1261 | 0, /* rightshift */ | |
1262 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1263 | 16, /* bitsize */ | |
1264 | FALSE, /* pc_relative */ | |
1265 | 0, /* bitpos */ | |
1266 | complain_overflow_signed, /* complain_on_overflow */ | |
1267 | ppc64_elf_toc_reloc, /* special_function */ | |
1268 | "R_PPC64_TOC16_DS", /* name */ | |
1269 | FALSE, /* partial_inplace */ | |
1270 | 0, /* src_mask */ | |
1271 | 0xfffc, /* dst_mask */ | |
1272 | FALSE), /* pcrel_offset */ | |
1273 | ||
1274 | /* Like R_PPC64_TOC16_LO, but for instructions with a DS field. */ | |
1275 | HOWTO (R_PPC64_TOC16_LO_DS, /* type */ | |
1276 | 0, /* rightshift */ | |
1277 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1278 | 16, /* bitsize */ | |
1279 | FALSE, /* pc_relative */ | |
1280 | 0, /* bitpos */ | |
1281 | complain_overflow_dont, /* complain_on_overflow */ | |
1282 | ppc64_elf_toc_reloc, /* special_function */ | |
1283 | "R_PPC64_TOC16_LO_DS", /* name */ | |
1284 | FALSE, /* partial_inplace */ | |
1285 | 0, /* src_mask */ | |
1286 | 0xfffc, /* dst_mask */ | |
1287 | FALSE), /* pcrel_offset */ | |
1288 | ||
1289 | /* Like R_PPC64_PLTGOT16, but for instructions with a DS field. */ | |
1290 | /* FIXME: R_PPC64_PLTGOT16_DS not implemented. */ | |
6bfdb61b | 1291 | HOWTO (R_PPC64_PLTGOT16_DS, /* type */ |
411e1bfb AM |
1292 | 0, /* rightshift */ |
1293 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1294 | 16, /* bitsize */ | |
1295 | FALSE, /* pc_relative */ | |
1296 | 0, /* bitpos */ | |
1297 | complain_overflow_signed, /* complain_on_overflow */ | |
1298 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1299 | "R_PPC64_PLTGOT16_DS", /* name */ | |
1300 | FALSE, /* partial_inplace */ | |
1301 | 0, /* src_mask */ | |
1302 | 0xfffc, /* dst_mask */ | |
1303 | FALSE), /* pcrel_offset */ | |
1304 | ||
1305 | /* Like R_PPC64_PLTGOT16_LO, but for instructions with a DS field. */ | |
1306 | /* FIXME: R_PPC64_PLTGOT16_LO not implemented. */ | |
1307 | HOWTO (R_PPC64_PLTGOT16_LO_DS,/* type */ | |
1308 | 0, /* rightshift */ | |
1309 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1310 | 16, /* bitsize */ | |
1311 | FALSE, /* pc_relative */ | |
1312 | 0, /* bitpos */ | |
1313 | complain_overflow_dont, /* complain_on_overflow */ | |
1314 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1315 | "R_PPC64_PLTGOT16_LO_DS",/* name */ | |
1316 | FALSE, /* partial_inplace */ | |
1317 | 0, /* src_mask */ | |
1318 | 0xfffc, /* dst_mask */ | |
1319 | FALSE), /* pcrel_offset */ | |
1320 | ||
727fc41e | 1321 | /* Marker relocs for TLS. */ |
411e1bfb AM |
1322 | HOWTO (R_PPC64_TLS, |
1323 | 0, /* rightshift */ | |
1324 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1325 | 32, /* bitsize */ | |
1326 | FALSE, /* pc_relative */ | |
1327 | 0, /* bitpos */ | |
1328 | complain_overflow_dont, /* complain_on_overflow */ | |
1329 | bfd_elf_generic_reloc, /* special_function */ | |
1330 | "R_PPC64_TLS", /* name */ | |
1331 | FALSE, /* partial_inplace */ | |
1332 | 0, /* src_mask */ | |
1333 | 0, /* dst_mask */ | |
1334 | FALSE), /* pcrel_offset */ | |
1335 | ||
727fc41e AM |
1336 | HOWTO (R_PPC64_TLSGD, |
1337 | 0, /* rightshift */ | |
1338 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1339 | 32, /* bitsize */ | |
1340 | FALSE, /* pc_relative */ | |
1341 | 0, /* bitpos */ | |
1342 | complain_overflow_dont, /* complain_on_overflow */ | |
1343 | bfd_elf_generic_reloc, /* special_function */ | |
1344 | "R_PPC64_TLSGD", /* name */ | |
1345 | FALSE, /* partial_inplace */ | |
1346 | 0, /* src_mask */ | |
1347 | 0, /* dst_mask */ | |
1348 | FALSE), /* pcrel_offset */ | |
1349 | ||
1350 | HOWTO (R_PPC64_TLSLD, | |
1351 | 0, /* rightshift */ | |
1352 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1353 | 32, /* bitsize */ | |
1354 | FALSE, /* pc_relative */ | |
1355 | 0, /* bitpos */ | |
1356 | complain_overflow_dont, /* complain_on_overflow */ | |
1357 | bfd_elf_generic_reloc, /* special_function */ | |
1358 | "R_PPC64_TLSLD", /* name */ | |
1359 | FALSE, /* partial_inplace */ | |
1360 | 0, /* src_mask */ | |
1361 | 0, /* dst_mask */ | |
1362 | FALSE), /* pcrel_offset */ | |
1363 | ||
23cedd1d AM |
1364 | /* Marker reloc for optimizing r2 save in prologue rather than on |
1365 | each plt call stub. */ | |
3b421ab3 AM |
1366 | HOWTO (R_PPC64_TOCSAVE, |
1367 | 0, /* rightshift */ | |
1368 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1369 | 32, /* bitsize */ | |
1370 | FALSE, /* pc_relative */ | |
1371 | 0, /* bitpos */ | |
1372 | complain_overflow_dont, /* complain_on_overflow */ | |
1373 | bfd_elf_generic_reloc, /* special_function */ | |
1374 | "R_PPC64_TOCSAVE", /* name */ | |
1375 | FALSE, /* partial_inplace */ | |
1376 | 0, /* src_mask */ | |
1377 | 0, /* dst_mask */ | |
1378 | FALSE), /* pcrel_offset */ | |
1379 | ||
23cedd1d AM |
1380 | /* Marker relocs on inline plt call instructions. */ |
1381 | HOWTO (R_PPC64_PLTSEQ, | |
1382 | 0, /* rightshift */ | |
1383 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1384 | 32, /* bitsize */ | |
1385 | FALSE, /* pc_relative */ | |
1386 | 0, /* bitpos */ | |
1387 | complain_overflow_dont, /* complain_on_overflow */ | |
1388 | bfd_elf_generic_reloc, /* special_function */ | |
1389 | "R_PPC64_PLTSEQ", /* name */ | |
1390 | FALSE, /* partial_inplace */ | |
1391 | 0, /* src_mask */ | |
1392 | 0, /* dst_mask */ | |
1393 | FALSE), /* pcrel_offset */ | |
1394 | ||
1395 | HOWTO (R_PPC64_PLTCALL, | |
1396 | 0, /* rightshift */ | |
1397 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1398 | 32, /* bitsize */ | |
1399 | FALSE, /* pc_relative */ | |
1400 | 0, /* bitpos */ | |
1401 | complain_overflow_dont, /* complain_on_overflow */ | |
1402 | bfd_elf_generic_reloc, /* special_function */ | |
1403 | "R_PPC64_PLTCALL", /* name */ | |
1404 | FALSE, /* partial_inplace */ | |
1405 | 0, /* src_mask */ | |
1406 | 0, /* dst_mask */ | |
1407 | FALSE), /* pcrel_offset */ | |
1408 | ||
411e1bfb AM |
1409 | /* Computes the load module index of the load module that contains the |
1410 | definition of its TLS sym. */ | |
1411 | HOWTO (R_PPC64_DTPMOD64, | |
1412 | 0, /* rightshift */ | |
1413 | 4, /* size (0 = byte, 1 = short, 2 = long) */ | |
1414 | 64, /* bitsize */ | |
1415 | FALSE, /* pc_relative */ | |
1416 | 0, /* bitpos */ | |
1417 | complain_overflow_dont, /* complain_on_overflow */ | |
1418 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1419 | "R_PPC64_DTPMOD64", /* name */ | |
1420 | FALSE, /* partial_inplace */ | |
1421 | 0, /* src_mask */ | |
1422 | ONES (64), /* dst_mask */ | |
1423 | FALSE), /* pcrel_offset */ | |
1424 | ||
1425 | /* Computes a dtv-relative displacement, the difference between the value | |
1426 | of sym+add and the base address of the thread-local storage block that | |
1427 | contains the definition of sym, minus 0x8000. */ | |
1428 | HOWTO (R_PPC64_DTPREL64, | |
1429 | 0, /* rightshift */ | |
1430 | 4, /* size (0 = byte, 1 = short, 2 = long) */ | |
1431 | 64, /* bitsize */ | |
1432 | FALSE, /* pc_relative */ | |
1433 | 0, /* bitpos */ | |
1434 | complain_overflow_dont, /* complain_on_overflow */ | |
1435 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1436 | "R_PPC64_DTPREL64", /* name */ | |
1437 | FALSE, /* partial_inplace */ | |
1438 | 0, /* src_mask */ | |
1439 | ONES (64), /* dst_mask */ | |
1440 | FALSE), /* pcrel_offset */ | |
1441 | ||
1442 | /* A 16 bit dtprel reloc. */ | |
1443 | HOWTO (R_PPC64_DTPREL16, | |
1444 | 0, /* rightshift */ | |
1445 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1446 | 16, /* bitsize */ | |
1447 | FALSE, /* pc_relative */ | |
1448 | 0, /* bitpos */ | |
1449 | complain_overflow_signed, /* complain_on_overflow */ | |
1450 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1451 | "R_PPC64_DTPREL16", /* name */ | |
1452 | FALSE, /* partial_inplace */ | |
1453 | 0, /* src_mask */ | |
1454 | 0xffff, /* dst_mask */ | |
1455 | FALSE), /* pcrel_offset */ | |
1456 | ||
1457 | /* Like DTPREL16, but no overflow. */ | |
1458 | HOWTO (R_PPC64_DTPREL16_LO, | |
1459 | 0, /* rightshift */ | |
1460 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1461 | 16, /* bitsize */ | |
1462 | FALSE, /* pc_relative */ | |
1463 | 0, /* bitpos */ | |
1464 | complain_overflow_dont, /* complain_on_overflow */ | |
1465 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1466 | "R_PPC64_DTPREL16_LO", /* name */ | |
1467 | FALSE, /* partial_inplace */ | |
1468 | 0, /* src_mask */ | |
1469 | 0xffff, /* dst_mask */ | |
1470 | FALSE), /* pcrel_offset */ | |
1471 | ||
1472 | /* Like DTPREL16_LO, but next higher group of 16 bits. */ | |
1473 | HOWTO (R_PPC64_DTPREL16_HI, | |
1474 | 16, /* rightshift */ | |
1475 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1476 | 16, /* bitsize */ | |
1477 | FALSE, /* pc_relative */ | |
1478 | 0, /* bitpos */ | |
f9c6b907 | 1479 | complain_overflow_signed, /* complain_on_overflow */ |
411e1bfb AM |
1480 | ppc64_elf_unhandled_reloc, /* special_function */ |
1481 | "R_PPC64_DTPREL16_HI", /* name */ | |
1482 | FALSE, /* partial_inplace */ | |
1483 | 0, /* src_mask */ | |
1484 | 0xffff, /* dst_mask */ | |
1485 | FALSE), /* pcrel_offset */ | |
1486 | ||
1487 | /* Like DTPREL16_HI, but adjust for low 16 bits. */ | |
1488 | HOWTO (R_PPC64_DTPREL16_HA, | |
1489 | 16, /* rightshift */ | |
1490 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1491 | 16, /* bitsize */ | |
1492 | FALSE, /* pc_relative */ | |
1493 | 0, /* bitpos */ | |
f9c6b907 | 1494 | complain_overflow_signed, /* complain_on_overflow */ |
411e1bfb AM |
1495 | ppc64_elf_unhandled_reloc, /* special_function */ |
1496 | "R_PPC64_DTPREL16_HA", /* name */ | |
1497 | FALSE, /* partial_inplace */ | |
1498 | 0, /* src_mask */ | |
1499 | 0xffff, /* dst_mask */ | |
1500 | FALSE), /* pcrel_offset */ | |
1501 | ||
1502 | /* Like DTPREL16_HI, but next higher group of 16 bits. */ | |
1503 | HOWTO (R_PPC64_DTPREL16_HIGHER, | |
1504 | 32, /* rightshift */ | |
1505 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1506 | 16, /* bitsize */ | |
1507 | FALSE, /* pc_relative */ | |
1508 | 0, /* bitpos */ | |
1509 | complain_overflow_dont, /* complain_on_overflow */ | |
1510 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1511 | "R_PPC64_DTPREL16_HIGHER", /* name */ | |
1512 | FALSE, /* partial_inplace */ | |
1513 | 0, /* src_mask */ | |
1514 | 0xffff, /* dst_mask */ | |
1515 | FALSE), /* pcrel_offset */ | |
1516 | ||
1517 | /* Like DTPREL16_HIGHER, but adjust for low 16 bits. */ | |
1518 | HOWTO (R_PPC64_DTPREL16_HIGHERA, | |
1519 | 32, /* rightshift */ | |
1520 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1521 | 16, /* bitsize */ | |
1522 | FALSE, /* pc_relative */ | |
1523 | 0, /* bitpos */ | |
1524 | complain_overflow_dont, /* complain_on_overflow */ | |
1525 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1526 | "R_PPC64_DTPREL16_HIGHERA", /* name */ | |
1527 | FALSE, /* partial_inplace */ | |
1528 | 0, /* src_mask */ | |
1529 | 0xffff, /* dst_mask */ | |
1530 | FALSE), /* pcrel_offset */ | |
1531 | ||
1532 | /* Like DTPREL16_HIGHER, but next higher group of 16 bits. */ | |
1533 | HOWTO (R_PPC64_DTPREL16_HIGHEST, | |
1534 | 48, /* rightshift */ | |
1535 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1536 | 16, /* bitsize */ | |
1537 | FALSE, /* pc_relative */ | |
1538 | 0, /* bitpos */ | |
1539 | complain_overflow_dont, /* complain_on_overflow */ | |
1540 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1541 | "R_PPC64_DTPREL16_HIGHEST", /* name */ | |
1542 | FALSE, /* partial_inplace */ | |
1543 | 0, /* src_mask */ | |
1544 | 0xffff, /* dst_mask */ | |
1545 | FALSE), /* pcrel_offset */ | |
1546 | ||
1547 | /* Like DTPREL16_HIGHEST, but adjust for low 16 bits. */ | |
1548 | HOWTO (R_PPC64_DTPREL16_HIGHESTA, | |
1549 | 48, /* rightshift */ | |
1550 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1551 | 16, /* bitsize */ | |
1552 | FALSE, /* pc_relative */ | |
1553 | 0, /* bitpos */ | |
1554 | complain_overflow_dont, /* complain_on_overflow */ | |
1555 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1556 | "R_PPC64_DTPREL16_HIGHESTA", /* name */ | |
1557 | FALSE, /* partial_inplace */ | |
1558 | 0, /* src_mask */ | |
1559 | 0xffff, /* dst_mask */ | |
1560 | FALSE), /* pcrel_offset */ | |
1561 | ||
1562 | /* Like DTPREL16, but for insns with a DS field. */ | |
1563 | HOWTO (R_PPC64_DTPREL16_DS, | |
1564 | 0, /* rightshift */ | |
1565 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1566 | 16, /* bitsize */ | |
1567 | FALSE, /* pc_relative */ | |
1568 | 0, /* bitpos */ | |
1569 | complain_overflow_signed, /* complain_on_overflow */ | |
1570 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1571 | "R_PPC64_DTPREL16_DS", /* name */ | |
1572 | FALSE, /* partial_inplace */ | |
1573 | 0, /* src_mask */ | |
1574 | 0xfffc, /* dst_mask */ | |
1575 | FALSE), /* pcrel_offset */ | |
1576 | ||
1577 | /* Like DTPREL16_DS, but no overflow. */ | |
1578 | HOWTO (R_PPC64_DTPREL16_LO_DS, | |
1579 | 0, /* rightshift */ | |
1580 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1581 | 16, /* bitsize */ | |
1582 | FALSE, /* pc_relative */ | |
1583 | 0, /* bitpos */ | |
1584 | complain_overflow_dont, /* complain_on_overflow */ | |
1585 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1586 | "R_PPC64_DTPREL16_LO_DS", /* name */ | |
1587 | FALSE, /* partial_inplace */ | |
1588 | 0, /* src_mask */ | |
1589 | 0xfffc, /* dst_mask */ | |
1590 | FALSE), /* pcrel_offset */ | |
1591 | ||
1592 | /* Computes a tp-relative displacement, the difference between the value of | |
1593 | sym+add and the value of the thread pointer (r13). */ | |
1594 | HOWTO (R_PPC64_TPREL64, | |
1595 | 0, /* rightshift */ | |
1596 | 4, /* size (0 = byte, 1 = short, 2 = long) */ | |
1597 | 64, /* bitsize */ | |
1598 | FALSE, /* pc_relative */ | |
1599 | 0, /* bitpos */ | |
1600 | complain_overflow_dont, /* complain_on_overflow */ | |
1601 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1602 | "R_PPC64_TPREL64", /* name */ | |
1603 | FALSE, /* partial_inplace */ | |
1604 | 0, /* src_mask */ | |
1605 | ONES (64), /* dst_mask */ | |
1606 | FALSE), /* pcrel_offset */ | |
1607 | ||
1608 | /* A 16 bit tprel reloc. */ | |
1609 | HOWTO (R_PPC64_TPREL16, | |
1610 | 0, /* rightshift */ | |
1611 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1612 | 16, /* bitsize */ | |
1613 | FALSE, /* pc_relative */ | |
1614 | 0, /* bitpos */ | |
1615 | complain_overflow_signed, /* complain_on_overflow */ | |
1616 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1617 | "R_PPC64_TPREL16", /* name */ | |
1618 | FALSE, /* partial_inplace */ | |
1619 | 0, /* src_mask */ | |
1620 | 0xffff, /* dst_mask */ | |
1621 | FALSE), /* pcrel_offset */ | |
1622 | ||
1623 | /* Like TPREL16, but no overflow. */ | |
1624 | HOWTO (R_PPC64_TPREL16_LO, | |
1625 | 0, /* rightshift */ | |
1626 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1627 | 16, /* bitsize */ | |
1628 | FALSE, /* pc_relative */ | |
1629 | 0, /* bitpos */ | |
1630 | complain_overflow_dont, /* complain_on_overflow */ | |
1631 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1632 | "R_PPC64_TPREL16_LO", /* name */ | |
1633 | FALSE, /* partial_inplace */ | |
1634 | 0, /* src_mask */ | |
1635 | 0xffff, /* dst_mask */ | |
1636 | FALSE), /* pcrel_offset */ | |
1637 | ||
1638 | /* Like TPREL16_LO, but next higher group of 16 bits. */ | |
1639 | HOWTO (R_PPC64_TPREL16_HI, | |
1640 | 16, /* rightshift */ | |
1641 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1642 | 16, /* bitsize */ | |
1643 | FALSE, /* pc_relative */ | |
1644 | 0, /* bitpos */ | |
f9c6b907 | 1645 | complain_overflow_signed, /* complain_on_overflow */ |
411e1bfb AM |
1646 | ppc64_elf_unhandled_reloc, /* special_function */ |
1647 | "R_PPC64_TPREL16_HI", /* name */ | |
1648 | FALSE, /* partial_inplace */ | |
1649 | 0, /* src_mask */ | |
1650 | 0xffff, /* dst_mask */ | |
1651 | FALSE), /* pcrel_offset */ | |
1652 | ||
1653 | /* Like TPREL16_HI, but adjust for low 16 bits. */ | |
1654 | HOWTO (R_PPC64_TPREL16_HA, | |
1655 | 16, /* rightshift */ | |
1656 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1657 | 16, /* bitsize */ | |
1658 | FALSE, /* pc_relative */ | |
1659 | 0, /* bitpos */ | |
f9c6b907 | 1660 | complain_overflow_signed, /* complain_on_overflow */ |
411e1bfb AM |
1661 | ppc64_elf_unhandled_reloc, /* special_function */ |
1662 | "R_PPC64_TPREL16_HA", /* name */ | |
1663 | FALSE, /* partial_inplace */ | |
1664 | 0, /* src_mask */ | |
1665 | 0xffff, /* dst_mask */ | |
1666 | FALSE), /* pcrel_offset */ | |
1667 | ||
1668 | /* Like TPREL16_HI, but next higher group of 16 bits. */ | |
1669 | HOWTO (R_PPC64_TPREL16_HIGHER, | |
1670 | 32, /* rightshift */ | |
1671 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1672 | 16, /* bitsize */ | |
1673 | FALSE, /* pc_relative */ | |
1674 | 0, /* bitpos */ | |
1675 | complain_overflow_dont, /* complain_on_overflow */ | |
1676 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1677 | "R_PPC64_TPREL16_HIGHER", /* name */ | |
1678 | FALSE, /* partial_inplace */ | |
1679 | 0, /* src_mask */ | |
1680 | 0xffff, /* dst_mask */ | |
1681 | FALSE), /* pcrel_offset */ | |
1682 | ||
1683 | /* Like TPREL16_HIGHER, but adjust for low 16 bits. */ | |
1684 | HOWTO (R_PPC64_TPREL16_HIGHERA, | |
1685 | 32, /* rightshift */ | |
1686 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1687 | 16, /* bitsize */ | |
1688 | FALSE, /* pc_relative */ | |
1689 | 0, /* bitpos */ | |
1690 | complain_overflow_dont, /* complain_on_overflow */ | |
1691 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1692 | "R_PPC64_TPREL16_HIGHERA", /* name */ | |
1693 | FALSE, /* partial_inplace */ | |
1694 | 0, /* src_mask */ | |
1695 | 0xffff, /* dst_mask */ | |
1696 | FALSE), /* pcrel_offset */ | |
1697 | ||
1698 | /* Like TPREL16_HIGHER, but next higher group of 16 bits. */ | |
1699 | HOWTO (R_PPC64_TPREL16_HIGHEST, | |
1700 | 48, /* rightshift */ | |
1701 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1702 | 16, /* bitsize */ | |
1703 | FALSE, /* pc_relative */ | |
1704 | 0, /* bitpos */ | |
1705 | complain_overflow_dont, /* complain_on_overflow */ | |
1706 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1707 | "R_PPC64_TPREL16_HIGHEST", /* name */ | |
1708 | FALSE, /* partial_inplace */ | |
1709 | 0, /* src_mask */ | |
1710 | 0xffff, /* dst_mask */ | |
1711 | FALSE), /* pcrel_offset */ | |
1712 | ||
1713 | /* Like TPREL16_HIGHEST, but adjust for low 16 bits. */ | |
1714 | HOWTO (R_PPC64_TPREL16_HIGHESTA, | |
1715 | 48, /* rightshift */ | |
1716 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1717 | 16, /* bitsize */ | |
1718 | FALSE, /* pc_relative */ | |
1719 | 0, /* bitpos */ | |
1720 | complain_overflow_dont, /* complain_on_overflow */ | |
1721 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1722 | "R_PPC64_TPREL16_HIGHESTA", /* name */ | |
1723 | FALSE, /* partial_inplace */ | |
1724 | 0, /* src_mask */ | |
1725 | 0xffff, /* dst_mask */ | |
1726 | FALSE), /* pcrel_offset */ | |
1727 | ||
1728 | /* Like TPREL16, but for insns with a DS field. */ | |
1729 | HOWTO (R_PPC64_TPREL16_DS, | |
1730 | 0, /* rightshift */ | |
1731 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1732 | 16, /* bitsize */ | |
1733 | FALSE, /* pc_relative */ | |
1734 | 0, /* bitpos */ | |
1735 | complain_overflow_signed, /* complain_on_overflow */ | |
1736 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1737 | "R_PPC64_TPREL16_DS", /* name */ | |
1738 | FALSE, /* partial_inplace */ | |
1739 | 0, /* src_mask */ | |
1740 | 0xfffc, /* dst_mask */ | |
1741 | FALSE), /* pcrel_offset */ | |
1742 | ||
1743 | /* Like TPREL16_DS, but no overflow. */ | |
1744 | HOWTO (R_PPC64_TPREL16_LO_DS, | |
1745 | 0, /* rightshift */ | |
1746 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1747 | 16, /* bitsize */ | |
1748 | FALSE, /* pc_relative */ | |
1749 | 0, /* bitpos */ | |
1750 | complain_overflow_dont, /* complain_on_overflow */ | |
1751 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1752 | "R_PPC64_TPREL16_LO_DS", /* name */ | |
1753 | FALSE, /* partial_inplace */ | |
1754 | 0, /* src_mask */ | |
1755 | 0xfffc, /* dst_mask */ | |
1756 | FALSE), /* pcrel_offset */ | |
1757 | ||
1758 | /* Allocates two contiguous entries in the GOT to hold a tls_index structure, | |
1759 | with values (sym+add)@dtpmod and (sym+add)@dtprel, and computes the offset | |
1760 | to the first entry relative to the TOC base (r2). */ | |
1761 | HOWTO (R_PPC64_GOT_TLSGD16, | |
1762 | 0, /* rightshift */ | |
1763 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1764 | 16, /* bitsize */ | |
1765 | FALSE, /* pc_relative */ | |
1766 | 0, /* bitpos */ | |
1767 | complain_overflow_signed, /* complain_on_overflow */ | |
1768 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1769 | "R_PPC64_GOT_TLSGD16", /* name */ | |
b34976b6 | 1770 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
1771 | 0, /* src_mask */ |
1772 | 0xffff, /* dst_mask */ | |
b34976b6 | 1773 | FALSE), /* pcrel_offset */ |
5bd4f169 | 1774 | |
411e1bfb AM |
1775 | /* Like GOT_TLSGD16, but no overflow. */ |
1776 | HOWTO (R_PPC64_GOT_TLSGD16_LO, | |
5bd4f169 AM |
1777 | 0, /* rightshift */ |
1778 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1779 | 16, /* bitsize */ | |
b34976b6 | 1780 | FALSE, /* pc_relative */ |
5bd4f169 AM |
1781 | 0, /* bitpos */ |
1782 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 1783 | ppc64_elf_unhandled_reloc, /* special_function */ |
411e1bfb | 1784 | "R_PPC64_GOT_TLSGD16_LO", /* name */ |
b34976b6 | 1785 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
1786 | 0, /* src_mask */ |
1787 | 0xffff, /* dst_mask */ | |
b34976b6 | 1788 | FALSE), /* pcrel_offset */ |
5bd4f169 | 1789 | |
411e1bfb AM |
1790 | /* Like GOT_TLSGD16_LO, but next higher group of 16 bits. */ |
1791 | HOWTO (R_PPC64_GOT_TLSGD16_HI, | |
5bd4f169 AM |
1792 | 16, /* rightshift */ |
1793 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1794 | 16, /* bitsize */ | |
b34976b6 | 1795 | FALSE, /* pc_relative */ |
5bd4f169 | 1796 | 0, /* bitpos */ |
f9c6b907 | 1797 | complain_overflow_signed, /* complain_on_overflow */ |
805fc799 | 1798 | ppc64_elf_unhandled_reloc, /* special_function */ |
411e1bfb | 1799 | "R_PPC64_GOT_TLSGD16_HI", /* name */ |
b34976b6 | 1800 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
1801 | 0, /* src_mask */ |
1802 | 0xffff, /* dst_mask */ | |
b34976b6 | 1803 | FALSE), /* pcrel_offset */ |
5bd4f169 | 1804 | |
411e1bfb AM |
1805 | /* Like GOT_TLSGD16_HI, but adjust for low 16 bits. */ |
1806 | HOWTO (R_PPC64_GOT_TLSGD16_HA, | |
5bd4f169 AM |
1807 | 16, /* rightshift */ |
1808 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1809 | 16, /* bitsize */ | |
b34976b6 | 1810 | FALSE, /* pc_relative */ |
5bd4f169 | 1811 | 0, /* bitpos */ |
f9c6b907 | 1812 | complain_overflow_signed, /* complain_on_overflow */ |
805fc799 | 1813 | ppc64_elf_unhandled_reloc, /* special_function */ |
411e1bfb | 1814 | "R_PPC64_GOT_TLSGD16_HA", /* name */ |
b34976b6 | 1815 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
1816 | 0, /* src_mask */ |
1817 | 0xffff, /* dst_mask */ | |
b34976b6 | 1818 | FALSE), /* pcrel_offset */ |
5bd4f169 | 1819 | |
411e1bfb AM |
1820 | /* Allocates two contiguous entries in the GOT to hold a tls_index structure, |
1821 | with values (sym+add)@dtpmod and zero, and computes the offset to the | |
1822 | first entry relative to the TOC base (r2). */ | |
1823 | HOWTO (R_PPC64_GOT_TLSLD16, | |
5bd4f169 AM |
1824 | 0, /* rightshift */ |
1825 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1826 | 16, /* bitsize */ | |
b34976b6 | 1827 | FALSE, /* pc_relative */ |
5bd4f169 | 1828 | 0, /* bitpos */ |
411e1bfb AM |
1829 | complain_overflow_signed, /* complain_on_overflow */ |
1830 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1831 | "R_PPC64_GOT_TLSLD16", /* name */ | |
b34976b6 | 1832 | FALSE, /* partial_inplace */ |
d006db6c | 1833 | 0, /* src_mask */ |
411e1bfb | 1834 | 0xffff, /* dst_mask */ |
b34976b6 | 1835 | FALSE), /* pcrel_offset */ |
5bd4f169 | 1836 | |
411e1bfb AM |
1837 | /* Like GOT_TLSLD16, but no overflow. */ |
1838 | HOWTO (R_PPC64_GOT_TLSLD16_LO, | |
5bd4f169 AM |
1839 | 0, /* rightshift */ |
1840 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1841 | 16, /* bitsize */ | |
b34976b6 | 1842 | FALSE, /* pc_relative */ |
5bd4f169 | 1843 | 0, /* bitpos */ |
411e1bfb AM |
1844 | complain_overflow_dont, /* complain_on_overflow */ |
1845 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1846 | "R_PPC64_GOT_TLSLD16_LO", /* name */ | |
b34976b6 | 1847 | FALSE, /* partial_inplace */ |
d006db6c | 1848 | 0, /* src_mask */ |
411e1bfb | 1849 | 0xffff, /* dst_mask */ |
b34976b6 | 1850 | FALSE), /* pcrel_offset */ |
5bd4f169 | 1851 | |
411e1bfb AM |
1852 | /* Like GOT_TLSLD16_LO, but next higher group of 16 bits. */ |
1853 | HOWTO (R_PPC64_GOT_TLSLD16_HI, | |
1854 | 16, /* rightshift */ | |
5bd4f169 AM |
1855 | 1, /* size (0 = byte, 1 = short, 2 = long) */ |
1856 | 16, /* bitsize */ | |
b34976b6 | 1857 | FALSE, /* pc_relative */ |
5bd4f169 | 1858 | 0, /* bitpos */ |
f9c6b907 | 1859 | complain_overflow_signed, /* complain_on_overflow */ |
805fc799 | 1860 | ppc64_elf_unhandled_reloc, /* special_function */ |
411e1bfb | 1861 | "R_PPC64_GOT_TLSLD16_HI", /* name */ |
b34976b6 | 1862 | FALSE, /* partial_inplace */ |
d006db6c | 1863 | 0, /* src_mask */ |
411e1bfb | 1864 | 0xffff, /* dst_mask */ |
b34976b6 | 1865 | FALSE), /* pcrel_offset */ |
5bd4f169 | 1866 | |
411e1bfb AM |
1867 | /* Like GOT_TLSLD16_HI, but adjust for low 16 bits. */ |
1868 | HOWTO (R_PPC64_GOT_TLSLD16_HA, | |
1869 | 16, /* rightshift */ | |
5bd4f169 AM |
1870 | 1, /* size (0 = byte, 1 = short, 2 = long) */ |
1871 | 16, /* bitsize */ | |
b34976b6 | 1872 | FALSE, /* pc_relative */ |
5bd4f169 | 1873 | 0, /* bitpos */ |
f9c6b907 | 1874 | complain_overflow_signed, /* complain_on_overflow */ |
805fc799 | 1875 | ppc64_elf_unhandled_reloc, /* special_function */ |
411e1bfb | 1876 | "R_PPC64_GOT_TLSLD16_HA", /* name */ |
b34976b6 | 1877 | FALSE, /* partial_inplace */ |
d006db6c | 1878 | 0, /* src_mask */ |
411e1bfb | 1879 | 0xffff, /* dst_mask */ |
b34976b6 | 1880 | FALSE), /* pcrel_offset */ |
5bd4f169 | 1881 | |
411e1bfb AM |
1882 | /* Allocates an entry in the GOT with value (sym+add)@dtprel, and computes |
1883 | the offset to the entry relative to the TOC base (r2). */ | |
1884 | HOWTO (R_PPC64_GOT_DTPREL16_DS, | |
5bd4f169 AM |
1885 | 0, /* rightshift */ |
1886 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1887 | 16, /* bitsize */ | |
b34976b6 | 1888 | FALSE, /* pc_relative */ |
5bd4f169 | 1889 | 0, /* bitpos */ |
411e1bfb | 1890 | complain_overflow_signed, /* complain_on_overflow */ |
805fc799 | 1891 | ppc64_elf_unhandled_reloc, /* special_function */ |
411e1bfb | 1892 | "R_PPC64_GOT_DTPREL16_DS", /* name */ |
b34976b6 | 1893 | FALSE, /* partial_inplace */ |
d006db6c | 1894 | 0, /* src_mask */ |
5bd4f169 | 1895 | 0xfffc, /* dst_mask */ |
b34976b6 | 1896 | FALSE), /* pcrel_offset */ |
5bd4f169 | 1897 | |
411e1bfb AM |
1898 | /* Like GOT_DTPREL16_DS, but no overflow. */ |
1899 | HOWTO (R_PPC64_GOT_DTPREL16_LO_DS, | |
5bd4f169 | 1900 | 0, /* rightshift */ |
c061c2d8 AM |
1901 | 1, /* size (0 = byte, 1 = short, 2 = long) */ |
1902 | 16, /* bitsize */ | |
b34976b6 | 1903 | FALSE, /* pc_relative */ |
5bd4f169 | 1904 | 0, /* bitpos */ |
411e1bfb AM |
1905 | complain_overflow_dont, /* complain_on_overflow */ |
1906 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1907 | "R_PPC64_GOT_DTPREL16_LO_DS", /* name */ | |
b34976b6 | 1908 | FALSE, /* partial_inplace */ |
d006db6c | 1909 | 0, /* src_mask */ |
c061c2d8 | 1910 | 0xfffc, /* dst_mask */ |
b34976b6 | 1911 | FALSE), /* pcrel_offset */ |
5bd4f169 | 1912 | |
411e1bfb AM |
1913 | /* Like GOT_DTPREL16_LO_DS, but next higher group of 16 bits. */ |
1914 | HOWTO (R_PPC64_GOT_DTPREL16_HI, | |
1915 | 16, /* rightshift */ | |
5bd4f169 AM |
1916 | 1, /* size (0 = byte, 1 = short, 2 = long) */ |
1917 | 16, /* bitsize */ | |
b34976b6 | 1918 | FALSE, /* pc_relative */ |
5bd4f169 | 1919 | 0, /* bitpos */ |
f9c6b907 | 1920 | complain_overflow_signed, /* complain_on_overflow */ |
411e1bfb AM |
1921 | ppc64_elf_unhandled_reloc, /* special_function */ |
1922 | "R_PPC64_GOT_DTPREL16_HI", /* name */ | |
b34976b6 | 1923 | FALSE, /* partial_inplace */ |
d006db6c | 1924 | 0, /* src_mask */ |
411e1bfb | 1925 | 0xffff, /* dst_mask */ |
b34976b6 | 1926 | FALSE), /* pcrel_offset */ |
5bd4f169 | 1927 | |
411e1bfb AM |
1928 | /* Like GOT_DTPREL16_HI, but adjust for low 16 bits. */ |
1929 | HOWTO (R_PPC64_GOT_DTPREL16_HA, | |
1930 | 16, /* rightshift */ | |
1931 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1932 | 16, /* bitsize */ | |
1933 | FALSE, /* pc_relative */ | |
1934 | 0, /* bitpos */ | |
f9c6b907 | 1935 | complain_overflow_signed, /* complain_on_overflow */ |
411e1bfb AM |
1936 | ppc64_elf_unhandled_reloc, /* special_function */ |
1937 | "R_PPC64_GOT_DTPREL16_HA", /* name */ | |
1938 | FALSE, /* partial_inplace */ | |
1939 | 0, /* src_mask */ | |
1940 | 0xffff, /* dst_mask */ | |
1941 | FALSE), /* pcrel_offset */ | |
1942 | ||
1943 | /* Allocates an entry in the GOT with value (sym+add)@tprel, and computes the | |
1944 | offset to the entry relative to the TOC base (r2). */ | |
1945 | HOWTO (R_PPC64_GOT_TPREL16_DS, | |
5bd4f169 AM |
1946 | 0, /* rightshift */ |
1947 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1948 | 16, /* bitsize */ | |
b34976b6 | 1949 | FALSE, /* pc_relative */ |
5bd4f169 AM |
1950 | 0, /* bitpos */ |
1951 | complain_overflow_signed, /* complain_on_overflow */ | |
411e1bfb AM |
1952 | ppc64_elf_unhandled_reloc, /* special_function */ |
1953 | "R_PPC64_GOT_TPREL16_DS", /* name */ | |
b34976b6 | 1954 | FALSE, /* partial_inplace */ |
d006db6c | 1955 | 0, /* src_mask */ |
ad8e1ba5 | 1956 | 0xfffc, /* dst_mask */ |
b34976b6 | 1957 | FALSE), /* pcrel_offset */ |
5bd4f169 | 1958 | |
411e1bfb AM |
1959 | /* Like GOT_TPREL16_DS, but no overflow. */ |
1960 | HOWTO (R_PPC64_GOT_TPREL16_LO_DS, | |
5bd4f169 AM |
1961 | 0, /* rightshift */ |
1962 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1963 | 16, /* bitsize */ | |
b34976b6 | 1964 | FALSE, /* pc_relative */ |
5bd4f169 AM |
1965 | 0, /* bitpos */ |
1966 | complain_overflow_dont, /* complain_on_overflow */ | |
411e1bfb AM |
1967 | ppc64_elf_unhandled_reloc, /* special_function */ |
1968 | "R_PPC64_GOT_TPREL16_LO_DS", /* name */ | |
b34976b6 | 1969 | FALSE, /* partial_inplace */ |
d006db6c | 1970 | 0, /* src_mask */ |
ad8e1ba5 | 1971 | 0xfffc, /* dst_mask */ |
b34976b6 | 1972 | FALSE), /* pcrel_offset */ |
5bd4f169 | 1973 | |
411e1bfb AM |
1974 | /* Like GOT_TPREL16_LO_DS, but next higher group of 16 bits. */ |
1975 | HOWTO (R_PPC64_GOT_TPREL16_HI, | |
1976 | 16, /* rightshift */ | |
5bd4f169 AM |
1977 | 1, /* size (0 = byte, 1 = short, 2 = long) */ |
1978 | 16, /* bitsize */ | |
b34976b6 | 1979 | FALSE, /* pc_relative */ |
5bd4f169 | 1980 | 0, /* bitpos */ |
f9c6b907 | 1981 | complain_overflow_signed, /* complain_on_overflow */ |
805fc799 | 1982 | ppc64_elf_unhandled_reloc, /* special_function */ |
411e1bfb | 1983 | "R_PPC64_GOT_TPREL16_HI", /* name */ |
b34976b6 | 1984 | FALSE, /* partial_inplace */ |
d006db6c | 1985 | 0, /* src_mask */ |
411e1bfb | 1986 | 0xffff, /* dst_mask */ |
b34976b6 | 1987 | FALSE), /* pcrel_offset */ |
5bd4f169 | 1988 | |
411e1bfb AM |
1989 | /* Like GOT_TPREL16_HI, but adjust for low 16 bits. */ |
1990 | HOWTO (R_PPC64_GOT_TPREL16_HA, | |
1991 | 16, /* rightshift */ | |
5bd4f169 AM |
1992 | 1, /* size (0 = byte, 1 = short, 2 = long) */ |
1993 | 16, /* bitsize */ | |
b34976b6 | 1994 | FALSE, /* pc_relative */ |
5bd4f169 | 1995 | 0, /* bitpos */ |
f9c6b907 | 1996 | complain_overflow_signed, /* complain_on_overflow */ |
805fc799 | 1997 | ppc64_elf_unhandled_reloc, /* special_function */ |
411e1bfb | 1998 | "R_PPC64_GOT_TPREL16_HA", /* name */ |
b34976b6 | 1999 | FALSE, /* partial_inplace */ |
d006db6c | 2000 | 0, /* src_mask */ |
411e1bfb | 2001 | 0xffff, /* dst_mask */ |
b34976b6 | 2002 | FALSE), /* pcrel_offset */ |
5bd4f169 | 2003 | |
25f23106 AM |
2004 | HOWTO (R_PPC64_JMP_IREL, /* type */ |
2005 | 0, /* rightshift */ | |
2006 | 0, /* size (0=byte, 1=short, 2=long, 4=64 bits) */ | |
2007 | 0, /* bitsize */ | |
2008 | FALSE, /* pc_relative */ | |
2009 | 0, /* bitpos */ | |
2010 | complain_overflow_dont, /* complain_on_overflow */ | |
2011 | ppc64_elf_unhandled_reloc, /* special_function */ | |
2012 | "R_PPC64_JMP_IREL", /* name */ | |
2013 | FALSE, /* partial_inplace */ | |
2014 | 0, /* src_mask */ | |
2015 | 0, /* dst_mask */ | |
2016 | FALSE), /* pcrel_offset */ | |
2017 | ||
e054468f AM |
2018 | HOWTO (R_PPC64_IRELATIVE, /* type */ |
2019 | 0, /* rightshift */ | |
2020 | 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */ | |
2021 | 64, /* bitsize */ | |
2022 | FALSE, /* pc_relative */ | |
2023 | 0, /* bitpos */ | |
2024 | complain_overflow_dont, /* complain_on_overflow */ | |
2025 | bfd_elf_generic_reloc, /* special_function */ | |
2026 | "R_PPC64_IRELATIVE", /* name */ | |
2027 | FALSE, /* partial_inplace */ | |
2028 | 0, /* src_mask */ | |
2029 | ONES (64), /* dst_mask */ | |
2030 | FALSE), /* pcrel_offset */ | |
2031 | ||
25f23106 AM |
2032 | /* A 16 bit relative relocation. */ |
2033 | HOWTO (R_PPC64_REL16, /* type */ | |
2034 | 0, /* rightshift */ | |
2035 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
2036 | 16, /* bitsize */ | |
2037 | TRUE, /* pc_relative */ | |
2038 | 0, /* bitpos */ | |
b80eed39 | 2039 | complain_overflow_signed, /* complain_on_overflow */ |
25f23106 AM |
2040 | bfd_elf_generic_reloc, /* special_function */ |
2041 | "R_PPC64_REL16", /* name */ | |
2042 | FALSE, /* partial_inplace */ | |
2043 | 0, /* src_mask */ | |
2044 | 0xffff, /* dst_mask */ | |
2045 | TRUE), /* pcrel_offset */ | |
2046 | ||
2047 | /* A 16 bit relative relocation without overflow. */ | |
2048 | HOWTO (R_PPC64_REL16_LO, /* type */ | |
2049 | 0, /* rightshift */ | |
2050 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
2051 | 16, /* bitsize */ | |
2052 | TRUE, /* pc_relative */ | |
2053 | 0, /* bitpos */ | |
2054 | complain_overflow_dont,/* complain_on_overflow */ | |
2055 | bfd_elf_generic_reloc, /* special_function */ | |
2056 | "R_PPC64_REL16_LO", /* name */ | |
2057 | FALSE, /* partial_inplace */ | |
2058 | 0, /* src_mask */ | |
2059 | 0xffff, /* dst_mask */ | |
2060 | TRUE), /* pcrel_offset */ | |
2061 | ||
2062 | /* The high order 16 bits of a relative address. */ | |
2063 | HOWTO (R_PPC64_REL16_HI, /* type */ | |
2064 | 16, /* rightshift */ | |
2065 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
2066 | 16, /* bitsize */ | |
2067 | TRUE, /* pc_relative */ | |
2068 | 0, /* bitpos */ | |
f9c6b907 | 2069 | complain_overflow_signed, /* complain_on_overflow */ |
25f23106 AM |
2070 | bfd_elf_generic_reloc, /* special_function */ |
2071 | "R_PPC64_REL16_HI", /* name */ | |
2072 | FALSE, /* partial_inplace */ | |
2073 | 0, /* src_mask */ | |
2074 | 0xffff, /* dst_mask */ | |
2075 | TRUE), /* pcrel_offset */ | |
2076 | ||
2077 | /* The high order 16 bits of a relative address, plus 1 if the contents of | |
2078 | the low 16 bits, treated as a signed number, is negative. */ | |
2079 | HOWTO (R_PPC64_REL16_HA, /* type */ | |
2080 | 16, /* rightshift */ | |
2081 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
2082 | 16, /* bitsize */ | |
2083 | TRUE, /* pc_relative */ | |
2084 | 0, /* bitpos */ | |
f9c6b907 | 2085 | complain_overflow_signed, /* complain_on_overflow */ |
25f23106 AM |
2086 | ppc64_elf_ha_reloc, /* special_function */ |
2087 | "R_PPC64_REL16_HA", /* name */ | |
2088 | FALSE, /* partial_inplace */ | |
2089 | 0, /* src_mask */ | |
2090 | 0xffff, /* dst_mask */ | |
2091 | TRUE), /* pcrel_offset */ | |
2092 | ||
a680de9a PB |
2093 | /* Like R_PPC64_REL16_HA but for split field in addpcis. */ |
2094 | HOWTO (R_PPC64_REL16DX_HA, /* type */ | |
2095 | 16, /* rightshift */ | |
2096 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
2097 | 16, /* bitsize */ | |
2098 | TRUE, /* pc_relative */ | |
2099 | 0, /* bitpos */ | |
2100 | complain_overflow_signed, /* complain_on_overflow */ | |
2101 | ppc64_elf_ha_reloc, /* special_function */ | |
2102 | "R_PPC64_REL16DX_HA", /* name */ | |
2103 | FALSE, /* partial_inplace */ | |
2104 | 0, /* src_mask */ | |
2105 | 0x1fffc1, /* dst_mask */ | |
2106 | TRUE), /* pcrel_offset */ | |
2107 | ||
7ba71655 AM |
2108 | /* A split-field reloc for addpcis, non-relative (gas internal use only). */ |
2109 | HOWTO (R_PPC64_16DX_HA, /* type */ | |
2110 | 16, /* rightshift */ | |
2111 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
2112 | 16, /* bitsize */ | |
2113 | FALSE, /* pc_relative */ | |
2114 | 0, /* bitpos */ | |
2115 | complain_overflow_signed, /* complain_on_overflow */ | |
2116 | ppc64_elf_ha_reloc, /* special_function */ | |
2117 | "R_PPC64_16DX_HA", /* name */ | |
2118 | FALSE, /* partial_inplace */ | |
2119 | 0, /* src_mask */ | |
2120 | 0x1fffc1, /* dst_mask */ | |
2121 | FALSE), /* pcrel_offset */ | |
2122 | ||
f9c6b907 AM |
2123 | /* Like R_PPC64_ADDR16_HI, but no overflow. */ |
2124 | HOWTO (R_PPC64_ADDR16_HIGH, /* type */ | |
2125 | 16, /* rightshift */ | |
2126 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
2127 | 16, /* bitsize */ | |
2128 | FALSE, /* pc_relative */ | |
2129 | 0, /* bitpos */ | |
2130 | complain_overflow_dont, /* complain_on_overflow */ | |
2131 | bfd_elf_generic_reloc, /* special_function */ | |
2132 | "R_PPC64_ADDR16_HIGH", /* name */ | |
2133 | FALSE, /* partial_inplace */ | |
2134 | 0, /* src_mask */ | |
2135 | 0xffff, /* dst_mask */ | |
2136 | FALSE), /* pcrel_offset */ | |
2137 | ||
2138 | /* Like R_PPC64_ADDR16_HA, but no overflow. */ | |
2139 | HOWTO (R_PPC64_ADDR16_HIGHA, /* type */ | |
2140 | 16, /* rightshift */ | |
2141 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
2142 | 16, /* bitsize */ | |
2143 | FALSE, /* pc_relative */ | |
2144 | 0, /* bitpos */ | |
2145 | complain_overflow_dont, /* complain_on_overflow */ | |
2146 | ppc64_elf_ha_reloc, /* special_function */ | |
2147 | "R_PPC64_ADDR16_HIGHA", /* name */ | |
2148 | FALSE, /* partial_inplace */ | |
2149 | 0, /* src_mask */ | |
2150 | 0xffff, /* dst_mask */ | |
2151 | FALSE), /* pcrel_offset */ | |
2152 | ||
2153 | /* Like R_PPC64_DTPREL16_HI, but no overflow. */ | |
2154 | HOWTO (R_PPC64_DTPREL16_HIGH, | |
2155 | 16, /* rightshift */ | |
2156 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
2157 | 16, /* bitsize */ | |
2158 | FALSE, /* pc_relative */ | |
2159 | 0, /* bitpos */ | |
2160 | complain_overflow_dont, /* complain_on_overflow */ | |
2161 | ppc64_elf_unhandled_reloc, /* special_function */ | |
2162 | "R_PPC64_DTPREL16_HIGH", /* name */ | |
2163 | FALSE, /* partial_inplace */ | |
2164 | 0, /* src_mask */ | |
2165 | 0xffff, /* dst_mask */ | |
2166 | FALSE), /* pcrel_offset */ | |
2167 | ||
2168 | /* Like R_PPC64_DTPREL16_HA, but no overflow. */ | |
2169 | HOWTO (R_PPC64_DTPREL16_HIGHA, | |
2170 | 16, /* rightshift */ | |
2171 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
2172 | 16, /* bitsize */ | |
2173 | FALSE, /* pc_relative */ | |
2174 | 0, /* bitpos */ | |
2175 | complain_overflow_dont, /* complain_on_overflow */ | |
2176 | ppc64_elf_unhandled_reloc, /* special_function */ | |
2177 | "R_PPC64_DTPREL16_HIGHA", /* name */ | |
2178 | FALSE, /* partial_inplace */ | |
2179 | 0, /* src_mask */ | |
2180 | 0xffff, /* dst_mask */ | |
2181 | FALSE), /* pcrel_offset */ | |
2182 | ||
2183 | /* Like R_PPC64_TPREL16_HI, but no overflow. */ | |
2184 | HOWTO (R_PPC64_TPREL16_HIGH, | |
2185 | 16, /* rightshift */ | |
2186 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
2187 | 16, /* bitsize */ | |
2188 | FALSE, /* pc_relative */ | |
2189 | 0, /* bitpos */ | |
2190 | complain_overflow_dont, /* complain_on_overflow */ | |
2191 | ppc64_elf_unhandled_reloc, /* special_function */ | |
2192 | "R_PPC64_TPREL16_HIGH", /* name */ | |
2193 | FALSE, /* partial_inplace */ | |
2194 | 0, /* src_mask */ | |
2195 | 0xffff, /* dst_mask */ | |
2196 | FALSE), /* pcrel_offset */ | |
2197 | ||
2198 | /* Like R_PPC64_TPREL16_HA, but no overflow. */ | |
2199 | HOWTO (R_PPC64_TPREL16_HIGHA, | |
2200 | 16, /* rightshift */ | |
2201 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
2202 | 16, /* bitsize */ | |
2203 | FALSE, /* pc_relative */ | |
2204 | 0, /* bitpos */ | |
2205 | complain_overflow_dont, /* complain_on_overflow */ | |
2206 | ppc64_elf_unhandled_reloc, /* special_function */ | |
2207 | "R_PPC64_TPREL16_HIGHA", /* name */ | |
2208 | FALSE, /* partial_inplace */ | |
2209 | 0, /* src_mask */ | |
2210 | 0xffff, /* dst_mask */ | |
2211 | FALSE), /* pcrel_offset */ | |
2212 | ||
006589cf AM |
2213 | /* Marker reloc on ELFv2 large-model function entry. */ |
2214 | HOWTO (R_PPC64_ENTRY, | |
2215 | 0, /* rightshift */ | |
2216 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
2217 | 32, /* bitsize */ | |
2218 | FALSE, /* pc_relative */ | |
2219 | 0, /* bitpos */ | |
2220 | complain_overflow_dont, /* complain_on_overflow */ | |
2221 | bfd_elf_generic_reloc, /* special_function */ | |
2222 | "R_PPC64_ENTRY", /* name */ | |
2223 | FALSE, /* partial_inplace */ | |
2224 | 0, /* src_mask */ | |
2225 | 0, /* dst_mask */ | |
2226 | FALSE), /* pcrel_offset */ | |
2227 | ||
45965137 AM |
2228 | /* Like ADDR64, but use local entry point of function. */ |
2229 | HOWTO (R_PPC64_ADDR64_LOCAL, /* type */ | |
2230 | 0, /* rightshift */ | |
2231 | 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */ | |
2232 | 64, /* bitsize */ | |
2233 | FALSE, /* pc_relative */ | |
2234 | 0, /* bitpos */ | |
2235 | complain_overflow_dont, /* complain_on_overflow */ | |
2236 | bfd_elf_generic_reloc, /* special_function */ | |
2237 | "R_PPC64_ADDR64_LOCAL", /* name */ | |
2238 | FALSE, /* partial_inplace */ | |
2239 | 0, /* src_mask */ | |
2240 | ONES (64), /* dst_mask */ | |
2241 | FALSE), /* pcrel_offset */ | |
2242 | ||
5bd4f169 AM |
2243 | /* GNU extension to record C++ vtable hierarchy. */ |
2244 | HOWTO (R_PPC64_GNU_VTINHERIT, /* type */ | |
2245 | 0, /* rightshift */ | |
2246 | 0, /* size (0 = byte, 1 = short, 2 = long) */ | |
2247 | 0, /* bitsize */ | |
b34976b6 | 2248 | FALSE, /* pc_relative */ |
5bd4f169 AM |
2249 | 0, /* bitpos */ |
2250 | complain_overflow_dont, /* complain_on_overflow */ | |
2251 | NULL, /* special_function */ | |
2252 | "R_PPC64_GNU_VTINHERIT", /* name */ | |
b34976b6 | 2253 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
2254 | 0, /* src_mask */ |
2255 | 0, /* dst_mask */ | |
b34976b6 | 2256 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
2257 | |
2258 | /* GNU extension to record C++ vtable member usage. */ | |
2259 | HOWTO (R_PPC64_GNU_VTENTRY, /* type */ | |
2260 | 0, /* rightshift */ | |
2261 | 0, /* size (0 = byte, 1 = short, 2 = long) */ | |
2262 | 0, /* bitsize */ | |
b34976b6 | 2263 | FALSE, /* pc_relative */ |
5bd4f169 AM |
2264 | 0, /* bitpos */ |
2265 | complain_overflow_dont, /* complain_on_overflow */ | |
2266 | NULL, /* special_function */ | |
2267 | "R_PPC64_GNU_VTENTRY", /* name */ | |
b34976b6 | 2268 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
2269 | 0, /* src_mask */ |
2270 | 0, /* dst_mask */ | |
b34976b6 | 2271 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
2272 | }; |
2273 | ||
2274 | \f | |
2275 | /* Initialize the ppc64_elf_howto_table, so that linear accesses can | |
2276 | be done. */ | |
2277 | ||
2278 | static void | |
4ce794b7 | 2279 | ppc_howto_init (void) |
5bd4f169 AM |
2280 | { |
2281 | unsigned int i, type; | |
2282 | ||
a4b6fadd | 2283 | for (i = 0; i < ARRAY_SIZE (ppc64_elf_howto_raw); i++) |
5bd4f169 AM |
2284 | { |
2285 | type = ppc64_elf_howto_raw[i].type; | |
a4b6fadd | 2286 | BFD_ASSERT (type < ARRAY_SIZE (ppc64_elf_howto_table)); |
5bd4f169 AM |
2287 | ppc64_elf_howto_table[type] = &ppc64_elf_howto_raw[i]; |
2288 | } | |
2289 | } | |
2290 | ||
2291 | static reloc_howto_type * | |
f3185997 | 2292 | ppc64_elf_reloc_type_lookup (bfd *abfd, |
4ce794b7 | 2293 | bfd_reloc_code_real_type code) |
5bd4f169 | 2294 | { |
411e1bfb | 2295 | enum elf_ppc64_reloc_type r = R_PPC64_NONE; |
5bd4f169 AM |
2296 | |
2297 | if (!ppc64_elf_howto_table[R_PPC64_ADDR32]) | |
2298 | /* Initialize howto table if needed. */ | |
2299 | ppc_howto_init (); | |
2300 | ||
4ce794b7 | 2301 | switch (code) |
5bd4f169 AM |
2302 | { |
2303 | default: | |
f3185997 | 2304 | /* xgettext:c-format */ |
2cdcc330 AM |
2305 | _bfd_error_handler (_("%pB: unsupported relocation type %#x"), abfd, |
2306 | (int) code); | |
f3185997 | 2307 | bfd_set_error (bfd_error_bad_value); |
4ce794b7 | 2308 | return NULL; |
5bd4f169 | 2309 | |
411e1bfb AM |
2310 | case BFD_RELOC_NONE: r = R_PPC64_NONE; |
2311 | break; | |
2312 | case BFD_RELOC_32: r = R_PPC64_ADDR32; | |
2313 | break; | |
2314 | case BFD_RELOC_PPC_BA26: r = R_PPC64_ADDR24; | |
2315 | break; | |
2316 | case BFD_RELOC_16: r = R_PPC64_ADDR16; | |
2317 | break; | |
2318 | case BFD_RELOC_LO16: r = R_PPC64_ADDR16_LO; | |
2319 | break; | |
2320 | case BFD_RELOC_HI16: r = R_PPC64_ADDR16_HI; | |
2321 | break; | |
f9c6b907 AM |
2322 | case BFD_RELOC_PPC64_ADDR16_HIGH: r = R_PPC64_ADDR16_HIGH; |
2323 | break; | |
411e1bfb | 2324 | case BFD_RELOC_HI16_S: r = R_PPC64_ADDR16_HA; |
5bd4f169 | 2325 | break; |
f9c6b907 AM |
2326 | case BFD_RELOC_PPC64_ADDR16_HIGHA: r = R_PPC64_ADDR16_HIGHA; |
2327 | break; | |
411e1bfb | 2328 | case BFD_RELOC_PPC_BA16: r = R_PPC64_ADDR14; |
5bd4f169 | 2329 | break; |
411e1bfb | 2330 | case BFD_RELOC_PPC_BA16_BRTAKEN: r = R_PPC64_ADDR14_BRTAKEN; |
5bd4f169 | 2331 | break; |
411e1bfb | 2332 | case BFD_RELOC_PPC_BA16_BRNTAKEN: r = R_PPC64_ADDR14_BRNTAKEN; |
5bd4f169 | 2333 | break; |
411e1bfb | 2334 | case BFD_RELOC_PPC_B26: r = R_PPC64_REL24; |
5bd4f169 | 2335 | break; |
05d0e962 AM |
2336 | case BFD_RELOC_PPC64_REL24_NOTOC: r = R_PPC64_REL24_NOTOC; |
2337 | break; | |
411e1bfb | 2338 | case BFD_RELOC_PPC_B16: r = R_PPC64_REL14; |
5bd4f169 | 2339 | break; |
411e1bfb | 2340 | case BFD_RELOC_PPC_B16_BRTAKEN: r = R_PPC64_REL14_BRTAKEN; |
5bd4f169 | 2341 | break; |
411e1bfb | 2342 | case BFD_RELOC_PPC_B16_BRNTAKEN: r = R_PPC64_REL14_BRNTAKEN; |
5bd4f169 | 2343 | break; |
411e1bfb | 2344 | case BFD_RELOC_16_GOTOFF: r = R_PPC64_GOT16; |
5bd4f169 | 2345 | break; |
411e1bfb | 2346 | case BFD_RELOC_LO16_GOTOFF: r = R_PPC64_GOT16_LO; |
5bd4f169 | 2347 | break; |
411e1bfb | 2348 | case BFD_RELOC_HI16_GOTOFF: r = R_PPC64_GOT16_HI; |
5bd4f169 | 2349 | break; |
411e1bfb | 2350 | case BFD_RELOC_HI16_S_GOTOFF: r = R_PPC64_GOT16_HA; |
5bd4f169 | 2351 | break; |
411e1bfb | 2352 | case BFD_RELOC_PPC_COPY: r = R_PPC64_COPY; |
5bd4f169 | 2353 | break; |
411e1bfb | 2354 | case BFD_RELOC_PPC_GLOB_DAT: r = R_PPC64_GLOB_DAT; |
5bd4f169 | 2355 | break; |
411e1bfb | 2356 | case BFD_RELOC_32_PCREL: r = R_PPC64_REL32; |
5bd4f169 | 2357 | break; |
411e1bfb | 2358 | case BFD_RELOC_32_PLTOFF: r = R_PPC64_PLT32; |
5bd4f169 | 2359 | break; |
411e1bfb | 2360 | case BFD_RELOC_32_PLT_PCREL: r = R_PPC64_PLTREL32; |
5bd4f169 | 2361 | break; |
411e1bfb | 2362 | case BFD_RELOC_LO16_PLTOFF: r = R_PPC64_PLT16_LO; |
5bd4f169 | 2363 | break; |
411e1bfb | 2364 | case BFD_RELOC_HI16_PLTOFF: r = R_PPC64_PLT16_HI; |
5bd4f169 | 2365 | break; |
411e1bfb | 2366 | case BFD_RELOC_HI16_S_PLTOFF: r = R_PPC64_PLT16_HA; |
5bd4f169 | 2367 | break; |
411e1bfb | 2368 | case BFD_RELOC_16_BASEREL: r = R_PPC64_SECTOFF; |
5bd4f169 | 2369 | break; |
411e1bfb | 2370 | case BFD_RELOC_LO16_BASEREL: r = R_PPC64_SECTOFF_LO; |
5bd4f169 | 2371 | break; |
411e1bfb | 2372 | case BFD_RELOC_HI16_BASEREL: r = R_PPC64_SECTOFF_HI; |
5bd4f169 | 2373 | break; |
411e1bfb | 2374 | case BFD_RELOC_HI16_S_BASEREL: r = R_PPC64_SECTOFF_HA; |
5bd4f169 | 2375 | break; |
411e1bfb | 2376 | case BFD_RELOC_CTOR: r = R_PPC64_ADDR64; |
5bd4f169 | 2377 | break; |
411e1bfb | 2378 | case BFD_RELOC_64: r = R_PPC64_ADDR64; |
5bd4f169 | 2379 | break; |
411e1bfb | 2380 | case BFD_RELOC_PPC64_HIGHER: r = R_PPC64_ADDR16_HIGHER; |
5bd4f169 | 2381 | break; |
411e1bfb | 2382 | case BFD_RELOC_PPC64_HIGHER_S: r = R_PPC64_ADDR16_HIGHERA; |
5bd4f169 | 2383 | break; |
411e1bfb | 2384 | case BFD_RELOC_PPC64_HIGHEST: r = R_PPC64_ADDR16_HIGHEST; |
5bd4f169 | 2385 | break; |
411e1bfb | 2386 | case BFD_RELOC_PPC64_HIGHEST_S: r = R_PPC64_ADDR16_HIGHESTA; |
5bd4f169 | 2387 | break; |
411e1bfb | 2388 | case BFD_RELOC_64_PCREL: r = R_PPC64_REL64; |
5bd4f169 | 2389 | break; |
411e1bfb | 2390 | case BFD_RELOC_64_PLTOFF: r = R_PPC64_PLT64; |
5bd4f169 | 2391 | break; |
411e1bfb | 2392 | case BFD_RELOC_64_PLT_PCREL: r = R_PPC64_PLTREL64; |
5bd4f169 | 2393 | break; |
411e1bfb | 2394 | case BFD_RELOC_PPC_TOC16: r = R_PPC64_TOC16; |
5bd4f169 | 2395 | break; |
411e1bfb | 2396 | case BFD_RELOC_PPC64_TOC16_LO: r = R_PPC64_TOC16_LO; |
5bd4f169 | 2397 | break; |
411e1bfb | 2398 | case BFD_RELOC_PPC64_TOC16_HI: r = R_PPC64_TOC16_HI; |
5bd4f169 | 2399 | break; |
411e1bfb | 2400 | case BFD_RELOC_PPC64_TOC16_HA: r = R_PPC64_TOC16_HA; |
5bd4f169 | 2401 | break; |
411e1bfb | 2402 | case BFD_RELOC_PPC64_TOC: r = R_PPC64_TOC; |
5bd4f169 | 2403 | break; |
411e1bfb | 2404 | case BFD_RELOC_PPC64_PLTGOT16: r = R_PPC64_PLTGOT16; |
5bd4f169 | 2405 | break; |
411e1bfb | 2406 | case BFD_RELOC_PPC64_PLTGOT16_LO: r = R_PPC64_PLTGOT16_LO; |
5bd4f169 | 2407 | break; |
411e1bfb | 2408 | case BFD_RELOC_PPC64_PLTGOT16_HI: r = R_PPC64_PLTGOT16_HI; |
5bd4f169 | 2409 | break; |
411e1bfb | 2410 | case BFD_RELOC_PPC64_PLTGOT16_HA: r = R_PPC64_PLTGOT16_HA; |
5bd4f169 | 2411 | break; |
411e1bfb | 2412 | case BFD_RELOC_PPC64_ADDR16_DS: r = R_PPC64_ADDR16_DS; |
5bd4f169 | 2413 | break; |
411e1bfb | 2414 | case BFD_RELOC_PPC64_ADDR16_LO_DS: r = R_PPC64_ADDR16_LO_DS; |
5bd4f169 | 2415 | break; |
411e1bfb | 2416 | case BFD_RELOC_PPC64_GOT16_DS: r = R_PPC64_GOT16_DS; |
5bd4f169 | 2417 | break; |
411e1bfb | 2418 | case BFD_RELOC_PPC64_GOT16_LO_DS: r = R_PPC64_GOT16_LO_DS; |
5bd4f169 | 2419 | break; |
411e1bfb | 2420 | case BFD_RELOC_PPC64_PLT16_LO_DS: r = R_PPC64_PLT16_LO_DS; |
5bd4f169 | 2421 | break; |
411e1bfb | 2422 | case BFD_RELOC_PPC64_SECTOFF_DS: r = R_PPC64_SECTOFF_DS; |
5bd4f169 | 2423 | break; |
411e1bfb | 2424 | case BFD_RELOC_PPC64_SECTOFF_LO_DS: r = R_PPC64_SECTOFF_LO_DS; |
5bd4f169 | 2425 | break; |
411e1bfb | 2426 | case BFD_RELOC_PPC64_TOC16_DS: r = R_PPC64_TOC16_DS; |
5bd4f169 | 2427 | break; |
411e1bfb | 2428 | case BFD_RELOC_PPC64_TOC16_LO_DS: r = R_PPC64_TOC16_LO_DS; |
5bd4f169 | 2429 | break; |
411e1bfb | 2430 | case BFD_RELOC_PPC64_PLTGOT16_DS: r = R_PPC64_PLTGOT16_DS; |
5bd4f169 | 2431 | break; |
411e1bfb | 2432 | case BFD_RELOC_PPC64_PLTGOT16_LO_DS: r = R_PPC64_PLTGOT16_LO_DS; |
5bd4f169 | 2433 | break; |
411e1bfb | 2434 | case BFD_RELOC_PPC_TLS: r = R_PPC64_TLS; |
5bd4f169 | 2435 | break; |
727fc41e AM |
2436 | case BFD_RELOC_PPC_TLSGD: r = R_PPC64_TLSGD; |
2437 | break; | |
2438 | case BFD_RELOC_PPC_TLSLD: r = R_PPC64_TLSLD; | |
2439 | break; | |
411e1bfb | 2440 | case BFD_RELOC_PPC_DTPMOD: r = R_PPC64_DTPMOD64; |
5bd4f169 | 2441 | break; |
411e1bfb | 2442 | case BFD_RELOC_PPC_TPREL16: r = R_PPC64_TPREL16; |
5bd4f169 | 2443 | break; |
411e1bfb | 2444 | case BFD_RELOC_PPC_TPREL16_LO: r = R_PPC64_TPREL16_LO; |
5bd4f169 | 2445 | break; |
411e1bfb | 2446 | case BFD_RELOC_PPC_TPREL16_HI: r = R_PPC64_TPREL16_HI; |
5bd4f169 | 2447 | break; |
f9c6b907 AM |
2448 | case BFD_RELOC_PPC64_TPREL16_HIGH: r = R_PPC64_TPREL16_HIGH; |
2449 | break; | |
411e1bfb | 2450 | case BFD_RELOC_PPC_TPREL16_HA: r = R_PPC64_TPREL16_HA; |
5bd4f169 | 2451 | break; |
f9c6b907 AM |
2452 | case BFD_RELOC_PPC64_TPREL16_HIGHA: r = R_PPC64_TPREL16_HIGHA; |
2453 | break; | |
411e1bfb | 2454 | case BFD_RELOC_PPC_TPREL: r = R_PPC64_TPREL64; |
5bd4f169 | 2455 | break; |
411e1bfb AM |
2456 | case BFD_RELOC_PPC_DTPREL16: r = R_PPC64_DTPREL16; |
2457 | break; | |
2458 | case BFD_RELOC_PPC_DTPREL16_LO: r = R_PPC64_DTPREL16_LO; | |
2459 | break; | |
2460 | case BFD_RELOC_PPC_DTPREL16_HI: r = R_PPC64_DTPREL16_HI; | |
2461 | break; | |
f9c6b907 AM |
2462 | case BFD_RELOC_PPC64_DTPREL16_HIGH: r = R_PPC64_DTPREL16_HIGH; |
2463 | break; | |
411e1bfb AM |
2464 | case BFD_RELOC_PPC_DTPREL16_HA: r = R_PPC64_DTPREL16_HA; |
2465 | break; | |
f9c6b907 AM |
2466 | case BFD_RELOC_PPC64_DTPREL16_HIGHA: r = R_PPC64_DTPREL16_HIGHA; |
2467 | break; | |
411e1bfb AM |
2468 | case BFD_RELOC_PPC_DTPREL: r = R_PPC64_DTPREL64; |
2469 | break; | |
2470 | case BFD_RELOC_PPC_GOT_TLSGD16: r = R_PPC64_GOT_TLSGD16; | |
2471 | break; | |
2472 | case BFD_RELOC_PPC_GOT_TLSGD16_LO: r = R_PPC64_GOT_TLSGD16_LO; | |
2473 | break; | |
2474 | case BFD_RELOC_PPC_GOT_TLSGD16_HI: r = R_PPC64_GOT_TLSGD16_HI; | |
2475 | break; | |
2476 | case BFD_RELOC_PPC_GOT_TLSGD16_HA: r = R_PPC64_GOT_TLSGD16_HA; | |
2477 | break; | |
2478 | case BFD_RELOC_PPC_GOT_TLSLD16: r = R_PPC64_GOT_TLSLD16; | |
2479 | break; | |
2480 | case BFD_RELOC_PPC_GOT_TLSLD16_LO: r = R_PPC64_GOT_TLSLD16_LO; | |
2481 | break; | |
2482 | case BFD_RELOC_PPC_GOT_TLSLD16_HI: r = R_PPC64_GOT_TLSLD16_HI; | |
2483 | break; | |
2484 | case BFD_RELOC_PPC_GOT_TLSLD16_HA: r = R_PPC64_GOT_TLSLD16_HA; | |
2485 | break; | |
2486 | case BFD_RELOC_PPC_GOT_TPREL16: r = R_PPC64_GOT_TPREL16_DS; | |
2487 | break; | |
2488 | case BFD_RELOC_PPC_GOT_TPREL16_LO: r = R_PPC64_GOT_TPREL16_LO_DS; | |
2489 | break; | |
2490 | case BFD_RELOC_PPC_GOT_TPREL16_HI: r = R_PPC64_GOT_TPREL16_HI; | |
2491 | break; | |
2492 | case BFD_RELOC_PPC_GOT_TPREL16_HA: r = R_PPC64_GOT_TPREL16_HA; | |
2493 | break; | |
2494 | case BFD_RELOC_PPC_GOT_DTPREL16: r = R_PPC64_GOT_DTPREL16_DS; | |
2495 | break; | |
2496 | case BFD_RELOC_PPC_GOT_DTPREL16_LO: r = R_PPC64_GOT_DTPREL16_LO_DS; | |
2497 | break; | |
2498 | case BFD_RELOC_PPC_GOT_DTPREL16_HI: r = R_PPC64_GOT_DTPREL16_HI; | |
2499 | break; | |
2500 | case BFD_RELOC_PPC_GOT_DTPREL16_HA: r = R_PPC64_GOT_DTPREL16_HA; | |
2501 | break; | |
2502 | case BFD_RELOC_PPC64_TPREL16_DS: r = R_PPC64_TPREL16_DS; | |
2503 | break; | |
2504 | case BFD_RELOC_PPC64_TPREL16_LO_DS: r = R_PPC64_TPREL16_LO_DS; | |
2505 | break; | |
2506 | case BFD_RELOC_PPC64_TPREL16_HIGHER: r = R_PPC64_TPREL16_HIGHER; | |
2507 | break; | |
2508 | case BFD_RELOC_PPC64_TPREL16_HIGHERA: r = R_PPC64_TPREL16_HIGHERA; | |
2509 | break; | |
2510 | case BFD_RELOC_PPC64_TPREL16_HIGHEST: r = R_PPC64_TPREL16_HIGHEST; | |
2511 | break; | |
2512 | case BFD_RELOC_PPC64_TPREL16_HIGHESTA: r = R_PPC64_TPREL16_HIGHESTA; | |
2513 | break; | |
2514 | case BFD_RELOC_PPC64_DTPREL16_DS: r = R_PPC64_DTPREL16_DS; | |
2515 | break; | |
2516 | case BFD_RELOC_PPC64_DTPREL16_LO_DS: r = R_PPC64_DTPREL16_LO_DS; | |
2517 | break; | |
2518 | case BFD_RELOC_PPC64_DTPREL16_HIGHER: r = R_PPC64_DTPREL16_HIGHER; | |
2519 | break; | |
2520 | case BFD_RELOC_PPC64_DTPREL16_HIGHERA: r = R_PPC64_DTPREL16_HIGHERA; | |
2521 | break; | |
2522 | case BFD_RELOC_PPC64_DTPREL16_HIGHEST: r = R_PPC64_DTPREL16_HIGHEST; | |
2523 | break; | |
2524 | case BFD_RELOC_PPC64_DTPREL16_HIGHESTA: r = R_PPC64_DTPREL16_HIGHESTA; | |
2525 | break; | |
25f23106 AM |
2526 | case BFD_RELOC_16_PCREL: r = R_PPC64_REL16; |
2527 | break; | |
2528 | case BFD_RELOC_LO16_PCREL: r = R_PPC64_REL16_LO; | |
2529 | break; | |
2530 | case BFD_RELOC_HI16_PCREL: r = R_PPC64_REL16_HI; | |
2531 | break; | |
2532 | case BFD_RELOC_HI16_S_PCREL: r = R_PPC64_REL16_HA; | |
2533 | break; | |
7ba71655 AM |
2534 | case BFD_RELOC_PPC_16DX_HA: r = R_PPC64_16DX_HA; |
2535 | break; | |
a680de9a PB |
2536 | case BFD_RELOC_PPC_REL16DX_HA: r = R_PPC64_REL16DX_HA; |
2537 | break; | |
006589cf AM |
2538 | case BFD_RELOC_PPC64_ENTRY: r = R_PPC64_ENTRY; |
2539 | break; | |
45965137 AM |
2540 | case BFD_RELOC_PPC64_ADDR64_LOCAL: r = R_PPC64_ADDR64_LOCAL; |
2541 | break; | |
411e1bfb AM |
2542 | case BFD_RELOC_VTABLE_INHERIT: r = R_PPC64_GNU_VTINHERIT; |
2543 | break; | |
2544 | case BFD_RELOC_VTABLE_ENTRY: r = R_PPC64_GNU_VTENTRY; | |
5bd4f169 AM |
2545 | break; |
2546 | } | |
2547 | ||
4ce794b7 | 2548 | return ppc64_elf_howto_table[r]; |
5bd4f169 AM |
2549 | }; |
2550 | ||
157090f7 AM |
2551 | static reloc_howto_type * |
2552 | ppc64_elf_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED, | |
2553 | const char *r_name) | |
2554 | { | |
2555 | unsigned int i; | |
2556 | ||
a4b6fadd | 2557 | for (i = 0; i < ARRAY_SIZE (ppc64_elf_howto_raw); i++) |
157090f7 AM |
2558 | if (ppc64_elf_howto_raw[i].name != NULL |
2559 | && strcasecmp (ppc64_elf_howto_raw[i].name, r_name) == 0) | |
2560 | return &ppc64_elf_howto_raw[i]; | |
2561 | ||
2562 | return NULL; | |
2563 | } | |
2564 | ||
5bd4f169 AM |
2565 | /* Set the howto pointer for a PowerPC ELF reloc. */ |
2566 | ||
f3185997 | 2567 | static bfd_boolean |
4aef7643 | 2568 | ppc64_elf_info_to_howto (bfd *abfd, arelent *cache_ptr, |
4ce794b7 | 2569 | Elf_Internal_Rela *dst) |
5bd4f169 | 2570 | { |
65f38f15 AM |
2571 | unsigned int type; |
2572 | ||
ef60b7ff | 2573 | /* Initialize howto table if needed. */ |
5bd4f169 | 2574 | if (!ppc64_elf_howto_table[R_PPC64_ADDR32]) |
5bd4f169 AM |
2575 | ppc_howto_init (); |
2576 | ||
65f38f15 | 2577 | type = ELF64_R_TYPE (dst->r_info); |
a4b6fadd | 2578 | if (type >= ARRAY_SIZE (ppc64_elf_howto_table)) |
d0fb9a8d | 2579 | { |
695344c0 | 2580 | /* xgettext:c-format */ |
0aa13fee | 2581 | _bfd_error_handler (_("%pB: unsupported relocation type %#x"), |
cf97bcb0 | 2582 | abfd, type); |
f3185997 NC |
2583 | bfd_set_error (bfd_error_bad_value); |
2584 | return FALSE; | |
d0fb9a8d | 2585 | } |
65f38f15 | 2586 | cache_ptr->howto = ppc64_elf_howto_table[type]; |
f3185997 NC |
2587 | if (cache_ptr->howto == NULL || cache_ptr->howto->name == NULL) |
2588 | { | |
2589 | /* xgettext:c-format */ | |
2590 | _bfd_error_handler (_("%pB: unsupported relocation type %#x"), | |
2591 | abfd, type); | |
2592 | bfd_set_error (bfd_error_bad_value); | |
2593 | return FALSE; | |
2594 | } | |
2cdcc330 | 2595 | |
f3185997 | 2596 | return TRUE; |
5bd4f169 AM |
2597 | } |
2598 | ||
04c9666a | 2599 | /* Handle the R_PPC64_ADDR16_HA and similar relocs. */ |
5bd4f169 AM |
2600 | |
2601 | static bfd_reloc_status_type | |
4ce794b7 AM |
2602 | ppc64_elf_ha_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, |
2603 | void *data, asection *input_section, | |
2604 | bfd *output_bfd, char **error_message) | |
5bd4f169 | 2605 | { |
a680de9a PB |
2606 | enum elf_ppc64_reloc_type r_type; |
2607 | long insn; | |
2608 | bfd_size_type octets; | |
3de43e7b | 2609 | bfd_vma value; |
a680de9a | 2610 | |
805fc799 AM |
2611 | /* If this is a relocatable link (output_bfd test tells us), just |
2612 | call the generic function. Any adjustment will be done at final | |
2613 | link time. */ | |
2614 | if (output_bfd != NULL) | |
cedb70c5 | 2615 | return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, |
805fc799 AM |
2616 | input_section, output_bfd, error_message); |
2617 | ||
2618 | /* Adjust the addend for sign extension of the low 16 bits. | |
2619 | We won't actually be using the low 16 bits, so trashing them | |
2620 | doesn't matter. */ | |
2621 | reloc_entry->addend += 0x8000; | |
a680de9a PB |
2622 | r_type = reloc_entry->howto->type; |
2623 | if (r_type != R_PPC64_REL16DX_HA) | |
2624 | return bfd_reloc_continue; | |
2625 | ||
2626 | value = 0; | |
2627 | if (!bfd_is_com_section (symbol->section)) | |
2628 | value = symbol->value; | |
2629 | value += (reloc_entry->addend | |
2630 | + symbol->section->output_offset | |
2631 | + symbol->section->output_section->vma); | |
2632 | value -= (reloc_entry->address | |
2633 | + input_section->output_offset | |
2634 | + input_section->output_section->vma); | |
3de43e7b | 2635 | value = (bfd_signed_vma) value >> 16; |
a680de9a PB |
2636 | |
2637 | octets = reloc_entry->address * bfd_octets_per_byte (abfd); | |
2638 | insn = bfd_get_32 (abfd, (bfd_byte *) data + octets); | |
2639 | insn &= ~0x1fffc1; | |
3de43e7b | 2640 | insn |= (value & 0xffc1) | ((value & 0x3e) << 15); |
a680de9a | 2641 | bfd_put_32 (abfd, insn, (bfd_byte *) data + octets); |
3de43e7b | 2642 | if (value + 0x8000 > 0xffff) |
a680de9a PB |
2643 | return bfd_reloc_overflow; |
2644 | return bfd_reloc_ok; | |
805fc799 | 2645 | } |
5bd4f169 | 2646 | |
2441e016 AM |
2647 | static bfd_reloc_status_type |
2648 | ppc64_elf_branch_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, | |
2649 | void *data, asection *input_section, | |
2650 | bfd *output_bfd, char **error_message) | |
2651 | { | |
2652 | if (output_bfd != NULL) | |
2653 | return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, | |
2654 | input_section, output_bfd, error_message); | |
2655 | ||
699733f6 AM |
2656 | if (strcmp (symbol->section->name, ".opd") == 0 |
2657 | && (symbol->section->owner->flags & DYNAMIC) == 0) | |
2441e016 AM |
2658 | { |
2659 | bfd_vma dest = opd_entry_value (symbol->section, | |
2660 | symbol->value + reloc_entry->addend, | |
aef36ac1 | 2661 | NULL, NULL, FALSE); |
2441e016 AM |
2662 | if (dest != (bfd_vma) -1) |
2663 | reloc_entry->addend = dest - (symbol->value | |
2664 | + symbol->section->output_section->vma | |
2665 | + symbol->section->output_offset); | |
2666 | } | |
810d4e75 AM |
2667 | else |
2668 | { | |
2669 | elf_symbol_type *elfsym = (elf_symbol_type *) symbol; | |
2670 | ||
2671 | if (symbol->section->owner != abfd | |
9f284bf9 | 2672 | && symbol->section->owner != NULL |
810d4e75 AM |
2673 | && abiversion (symbol->section->owner) >= 2) |
2674 | { | |
2675 | unsigned int i; | |
2676 | ||
2677 | for (i = 0; i < symbol->section->owner->symcount; ++i) | |
2678 | { | |
2679 | asymbol *symdef = symbol->section->owner->outsymbols[i]; | |
2680 | ||
2681 | if (strcmp (symdef->name, symbol->name) == 0) | |
2682 | { | |
2683 | elfsym = (elf_symbol_type *) symdef; | |
2684 | break; | |
2685 | } | |
2686 | } | |
2687 | } | |
2688 | reloc_entry->addend | |
2689 | += PPC64_LOCAL_ENTRY_OFFSET (elfsym->internal_elf_sym.st_other); | |
2690 | } | |
2441e016 AM |
2691 | return bfd_reloc_continue; |
2692 | } | |
2693 | ||
805fc799 | 2694 | static bfd_reloc_status_type |
4ce794b7 AM |
2695 | ppc64_elf_brtaken_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, |
2696 | void *data, asection *input_section, | |
2697 | bfd *output_bfd, char **error_message) | |
805fc799 AM |
2698 | { |
2699 | long insn; | |
04c9666a | 2700 | enum elf_ppc64_reloc_type r_type; |
805fc799 | 2701 | bfd_size_type octets; |
794e51c0 AM |
2702 | /* Assume 'at' branch hints. */ |
2703 | bfd_boolean is_isa_v2 = TRUE; | |
805fc799 AM |
2704 | |
2705 | /* If this is a relocatable link (output_bfd test tells us), just | |
2706 | call the generic function. Any adjustment will be done at final | |
2707 | link time. */ | |
5bd4f169 | 2708 | if (output_bfd != NULL) |
cedb70c5 | 2709 | return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, |
805fc799 AM |
2710 | input_section, output_bfd, error_message); |
2711 | ||
2712 | octets = reloc_entry->address * bfd_octets_per_byte (abfd); | |
2713 | insn = bfd_get_32 (abfd, (bfd_byte *) data + octets); | |
2714 | insn &= ~(0x01 << 21); | |
4ce794b7 | 2715 | r_type = reloc_entry->howto->type; |
805fc799 AM |
2716 | if (r_type == R_PPC64_ADDR14_BRTAKEN |
2717 | || r_type == R_PPC64_REL14_BRTAKEN) | |
cedb70c5 | 2718 | insn |= 0x01 << 21; /* 'y' or 't' bit, lowest bit of BO field. */ |
805fc799 | 2719 | |
794e51c0 | 2720 | if (is_isa_v2) |
5bd4f169 | 2721 | { |
805fc799 AM |
2722 | /* Set 'a' bit. This is 0b00010 in BO field for branch |
2723 | on CR(BI) insns (BO == 001at or 011at), and 0b01000 | |
2724 | for branch on CTR insns (BO == 1a00t or 1a01t). */ | |
2725 | if ((insn & (0x14 << 21)) == (0x04 << 21)) | |
2726 | insn |= 0x02 << 21; | |
2727 | else if ((insn & (0x14 << 21)) == (0x10 << 21)) | |
2728 | insn |= 0x08 << 21; | |
2729 | else | |
2441e016 | 2730 | goto out; |
5bd4f169 | 2731 | } |
805fc799 AM |
2732 | else |
2733 | { | |
2734 | bfd_vma target = 0; | |
2735 | bfd_vma from; | |
5bd4f169 | 2736 | |
805fc799 AM |
2737 | if (!bfd_is_com_section (symbol->section)) |
2738 | target = symbol->value; | |
2739 | target += symbol->section->output_section->vma; | |
2740 | target += symbol->section->output_offset; | |
2741 | target += reloc_entry->addend; | |
5bd4f169 | 2742 | |
805fc799 AM |
2743 | from = (reloc_entry->address |
2744 | + input_section->output_offset | |
2745 | + input_section->output_section->vma); | |
5bd4f169 | 2746 | |
805fc799 AM |
2747 | /* Invert 'y' bit if not the default. */ |
2748 | if ((bfd_signed_vma) (target - from) < 0) | |
2749 | insn ^= 0x01 << 21; | |
2750 | } | |
4ce794b7 | 2751 | bfd_put_32 (abfd, insn, (bfd_byte *) data + octets); |
2441e016 AM |
2752 | out: |
2753 | return ppc64_elf_branch_reloc (abfd, reloc_entry, symbol, data, | |
2754 | input_section, output_bfd, error_message); | |
805fc799 | 2755 | } |
5bd4f169 | 2756 | |
805fc799 | 2757 | static bfd_reloc_status_type |
4ce794b7 AM |
2758 | ppc64_elf_sectoff_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, |
2759 | void *data, asection *input_section, | |
2760 | bfd *output_bfd, char **error_message) | |
805fc799 AM |
2761 | { |
2762 | /* If this is a relocatable link (output_bfd test tells us), just | |
2763 | call the generic function. Any adjustment will be done at final | |
2764 | link time. */ | |
2765 | if (output_bfd != NULL) | |
cedb70c5 | 2766 | return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, |
805fc799 | 2767 | input_section, output_bfd, error_message); |
5bd4f169 | 2768 | |
805fc799 AM |
2769 | /* Subtract the symbol section base address. */ |
2770 | reloc_entry->addend -= symbol->section->output_section->vma; | |
5bd4f169 AM |
2771 | return bfd_reloc_continue; |
2772 | } | |
2773 | ||
805fc799 | 2774 | static bfd_reloc_status_type |
4ce794b7 AM |
2775 | ppc64_elf_sectoff_ha_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, |
2776 | void *data, asection *input_section, | |
2777 | bfd *output_bfd, char **error_message) | |
805fc799 AM |
2778 | { |
2779 | /* If this is a relocatable link (output_bfd test tells us), just | |
2780 | call the generic function. Any adjustment will be done at final | |
2781 | link time. */ | |
2782 | if (output_bfd != NULL) | |
cedb70c5 | 2783 | return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, |
805fc799 AM |
2784 | input_section, output_bfd, error_message); |
2785 | ||
2786 | /* Subtract the symbol section base address. */ | |
2787 | reloc_entry->addend -= symbol->section->output_section->vma; | |
2788 | ||
2789 | /* Adjust the addend for sign extension of the low 16 bits. */ | |
2790 | reloc_entry->addend += 0x8000; | |
2791 | return bfd_reloc_continue; | |
2792 | } | |
2793 | ||
2794 | static bfd_reloc_status_type | |
4ce794b7 AM |
2795 | ppc64_elf_toc_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, |
2796 | void *data, asection *input_section, | |
2797 | bfd *output_bfd, char **error_message) | |
805fc799 AM |
2798 | { |
2799 | bfd_vma TOCstart; | |
2800 | ||
2801 | /* If this is a relocatable link (output_bfd test tells us), just | |
2802 | call the generic function. Any adjustment will be done at final | |
2803 | link time. */ | |
2804 | if (output_bfd != NULL) | |
cedb70c5 | 2805 | return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, |
805fc799 AM |
2806 | input_section, output_bfd, error_message); |
2807 | ||
2808 | TOCstart = _bfd_get_gp_value (input_section->output_section->owner); | |
2809 | if (TOCstart == 0) | |
1c865ab2 | 2810 | TOCstart = ppc64_elf_set_toc (NULL, input_section->output_section->owner); |
805fc799 AM |
2811 | |
2812 | /* Subtract the TOC base address. */ | |
2813 | reloc_entry->addend -= TOCstart + TOC_BASE_OFF; | |
2814 | return bfd_reloc_continue; | |
2815 | } | |
2816 | ||
2817 | static bfd_reloc_status_type | |
4ce794b7 AM |
2818 | ppc64_elf_toc_ha_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, |
2819 | void *data, asection *input_section, | |
2820 | bfd *output_bfd, char **error_message) | |
805fc799 AM |
2821 | { |
2822 | bfd_vma TOCstart; | |
2823 | ||
2824 | /* If this is a relocatable link (output_bfd test tells us), just | |
2825 | call the generic function. Any adjustment will be done at final | |
2826 | link time. */ | |
2827 | if (output_bfd != NULL) | |
cedb70c5 | 2828 | return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, |
805fc799 AM |
2829 | input_section, output_bfd, error_message); |
2830 | ||
2831 | TOCstart = _bfd_get_gp_value (input_section->output_section->owner); | |
2832 | if (TOCstart == 0) | |
1c865ab2 | 2833 | TOCstart = ppc64_elf_set_toc (NULL, input_section->output_section->owner); |
805fc799 AM |
2834 | |
2835 | /* Subtract the TOC base address. */ | |
2836 | reloc_entry->addend -= TOCstart + TOC_BASE_OFF; | |
2837 | ||
2838 | /* Adjust the addend for sign extension of the low 16 bits. */ | |
2839 | reloc_entry->addend += 0x8000; | |
2840 | return bfd_reloc_continue; | |
2841 | } | |
2842 | ||
2843 | static bfd_reloc_status_type | |
4ce794b7 AM |
2844 | ppc64_elf_toc64_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, |
2845 | void *data, asection *input_section, | |
2846 | bfd *output_bfd, char **error_message) | |
805fc799 AM |
2847 | { |
2848 | bfd_vma TOCstart; | |
2849 | bfd_size_type octets; | |
2850 | ||
2851 | /* If this is a relocatable link (output_bfd test tells us), just | |
2852 | call the generic function. Any adjustment will be done at final | |
2853 | link time. */ | |
2854 | if (output_bfd != NULL) | |
cedb70c5 | 2855 | return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, |
805fc799 AM |
2856 | input_section, output_bfd, error_message); |
2857 | ||
2858 | TOCstart = _bfd_get_gp_value (input_section->output_section->owner); | |
2859 | if (TOCstart == 0) | |
1c865ab2 | 2860 | TOCstart = ppc64_elf_set_toc (NULL, input_section->output_section->owner); |
805fc799 AM |
2861 | |
2862 | octets = reloc_entry->address * bfd_octets_per_byte (abfd); | |
2863 | bfd_put_64 (abfd, TOCstart + TOC_BASE_OFF, (bfd_byte *) data + octets); | |
2864 | return bfd_reloc_ok; | |
2865 | } | |
2866 | ||
2867 | static bfd_reloc_status_type | |
4ce794b7 AM |
2868 | ppc64_elf_unhandled_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, |
2869 | void *data, asection *input_section, | |
2870 | bfd *output_bfd, char **error_message) | |
805fc799 AM |
2871 | { |
2872 | /* If this is a relocatable link (output_bfd test tells us), just | |
2873 | call the generic function. Any adjustment will be done at final | |
2874 | link time. */ | |
2875 | if (output_bfd != NULL) | |
cedb70c5 | 2876 | return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, |
805fc799 AM |
2877 | input_section, output_bfd, error_message); |
2878 | ||
2879 | if (error_message != NULL) | |
2880 | { | |
2881 | static char buf[60]; | |
2882 | sprintf (buf, "generic linker can't handle %s", | |
2883 | reloc_entry->howto->name); | |
2884 | *error_message = buf; | |
2885 | } | |
2886 | return bfd_reloc_dangerous; | |
2887 | } | |
2888 | ||
927be08e AM |
2889 | /* Track GOT entries needed for a given symbol. We might need more |
2890 | than one got entry per symbol. */ | |
2891 | struct got_entry | |
2892 | { | |
2893 | struct got_entry *next; | |
2894 | ||
2895 | /* The symbol addend that we'll be placing in the GOT. */ | |
2896 | bfd_vma addend; | |
2897 | ||
2898 | /* Unlike other ELF targets, we use separate GOT entries for the same | |
2899 | symbol referenced from different input files. This is to support | |
2900 | automatic multiple TOC/GOT sections, where the TOC base can vary | |
2901 | from one input file to another. After partitioning into TOC groups | |
2902 | we merge entries within the group. | |
2903 | ||
2904 | Point to the BFD owning this GOT entry. */ | |
2905 | bfd *owner; | |
2906 | ||
2907 | /* Zero for non-tls entries, or TLS_TLS and one of TLS_GD, TLS_LD, | |
2908 | TLS_TPREL or TLS_DTPREL for tls entries. */ | |
f961d9dd | 2909 | unsigned char tls_type; |
927be08e AM |
2910 | |
2911 | /* Non-zero if got.ent points to real entry. */ | |
f961d9dd | 2912 | unsigned char is_indirect; |
927be08e AM |
2913 | |
2914 | /* Reference count until size_dynamic_sections, GOT offset thereafter. */ | |
2915 | union | |
2cdcc330 AM |
2916 | { |
2917 | bfd_signed_vma refcount; | |
2918 | bfd_vma offset; | |
2919 | struct got_entry *ent; | |
2920 | } got; | |
927be08e AM |
2921 | }; |
2922 | ||
2923 | /* The same for PLT. */ | |
2924 | struct plt_entry | |
2925 | { | |
2926 | struct plt_entry *next; | |
2927 | ||
2928 | bfd_vma addend; | |
2929 | ||
2930 | union | |
2cdcc330 AM |
2931 | { |
2932 | bfd_signed_vma refcount; | |
2933 | bfd_vma offset; | |
2934 | } plt; | |
927be08e AM |
2935 | }; |
2936 | ||
e717da7e AM |
2937 | struct ppc64_elf_obj_tdata |
2938 | { | |
2939 | struct elf_obj_tdata elf; | |
2940 | ||
2941 | /* Shortcuts to dynamic linker sections. */ | |
2942 | asection *got; | |
2943 | asection *relgot; | |
2944 | ||
b3fac117 AM |
2945 | /* Used during garbage collection. We attach global symbols defined |
2946 | on removed .opd entries to this section so that the sym is removed. */ | |
2947 | asection *deleted_section; | |
81688140 | 2948 | |
927be08e | 2949 | /* TLS local dynamic got entry handling. Support for multiple GOT |
e717da7e | 2950 | sections means we potentially need one of these for each input bfd. */ |
927be08e | 2951 | struct got_entry tlsld_got; |
8860955f | 2952 | |
2cdcc330 AM |
2953 | union |
2954 | { | |
729eabd5 AM |
2955 | /* A copy of relocs before they are modified for --emit-relocs. */ |
2956 | Elf_Internal_Rela *relocs; | |
2957 | ||
2958 | /* Section contents. */ | |
2959 | bfd_byte *contents; | |
2960 | } opd; | |
d77c8a4b AM |
2961 | |
2962 | /* Nonzero if this bfd has small toc/got relocs, ie. that expect | |
2963 | the reloc to be in the range -32768 to 32767. */ | |
98528052 AM |
2964 | unsigned int has_small_toc_reloc : 1; |
2965 | ||
560c8763 AM |
2966 | /* Set if toc/got ha relocs detected not using r2, or lo reloc |
2967 | instruction not one we handle. */ | |
2968 | unsigned int unexpected_toc_insn : 1; | |
e717da7e AM |
2969 | }; |
2970 | ||
2971 | #define ppc64_elf_tdata(bfd) \ | |
2972 | ((struct ppc64_elf_obj_tdata *) (bfd)->tdata.any) | |
2973 | ||
2974 | #define ppc64_tlsld_got(bfd) \ | |
2975 | (&ppc64_elf_tdata (bfd)->tlsld_got) | |
2976 | ||
0c8d6e5c AM |
2977 | #define is_ppc64_elf(bfd) \ |
2978 | (bfd_get_flavour (bfd) == bfd_target_elf_flavour \ | |
4dfe6ac6 | 2979 | && elf_object_id (bfd) == PPC64_ELF_DATA) |
0c8d6e5c | 2980 | |
e717da7e AM |
2981 | /* Override the generic function because we store some extras. */ |
2982 | ||
2983 | static bfd_boolean | |
2984 | ppc64_elf_mkobject (bfd *abfd) | |
2985 | { | |
0ffa91dd | 2986 | return bfd_elf_allocate_object (abfd, sizeof (struct ppc64_elf_obj_tdata), |
4dfe6ac6 | 2987 | PPC64_ELF_DATA); |
e717da7e AM |
2988 | } |
2989 | ||
feee612b | 2990 | /* Fix bad default arch selected for a 64 bit input bfd when the |
14b57c7c | 2991 | default is 32 bit. Also select arch based on apuinfo. */ |
feee612b | 2992 | |
b34976b6 | 2993 | static bfd_boolean |
4ce794b7 | 2994 | ppc64_elf_object_p (bfd *abfd) |
feee612b | 2995 | { |
14b57c7c AM |
2996 | if (!abfd->arch_info->the_default) |
2997 | return TRUE; | |
2998 | ||
2999 | if (abfd->arch_info->bits_per_word == 32) | |
feee612b AM |
3000 | { |
3001 | Elf_Internal_Ehdr *i_ehdr = elf_elfheader (abfd); | |
3002 | ||
3003 | if (i_ehdr->e_ident[EI_CLASS] == ELFCLASS64) | |
3004 | { | |
3005 | /* Relies on arch after 32 bit default being 64 bit default. */ | |
3006 | abfd->arch_info = abfd->arch_info->next; | |
3007 | BFD_ASSERT (abfd->arch_info->bits_per_word == 64); | |
3008 | } | |
3009 | } | |
14b57c7c | 3010 | return _bfd_elf_ppc_set_arch (abfd); |
feee612b AM |
3011 | } |
3012 | ||
d37c89e5 AM |
3013 | /* Support for core dump NOTE sections. */ |
3014 | ||
3015 | static bfd_boolean | |
3016 | ppc64_elf_grok_prstatus (bfd *abfd, Elf_Internal_Note *note) | |
3017 | { | |
eea6121a | 3018 | size_t offset, size; |
d37c89e5 AM |
3019 | |
3020 | if (note->descsz != 504) | |
3021 | return FALSE; | |
3022 | ||
3023 | /* pr_cursig */ | |
228e534f | 3024 | elf_tdata (abfd)->core->signal = bfd_get_16 (abfd, note->descdata + 12); |
d37c89e5 AM |
3025 | |
3026 | /* pr_pid */ | |
228e534f | 3027 | elf_tdata (abfd)->core->lwpid = bfd_get_32 (abfd, note->descdata + 32); |
d37c89e5 AM |
3028 | |
3029 | /* pr_reg */ | |
3030 | offset = 112; | |
eea6121a | 3031 | size = 384; |
d37c89e5 AM |
3032 | |
3033 | /* Make a ".reg/999" section. */ | |
3034 | return _bfd_elfcore_make_pseudosection (abfd, ".reg", | |
eea6121a | 3035 | size, note->descpos + offset); |
d37c89e5 AM |
3036 | } |
3037 | ||
3038 | static bfd_boolean | |
3039 | ppc64_elf_grok_psinfo (bfd *abfd, Elf_Internal_Note *note) | |
3040 | { | |
3041 | if (note->descsz != 136) | |
3042 | return FALSE; | |
3043 | ||
228e534f | 3044 | elf_tdata (abfd)->core->pid |
bc989cdc | 3045 | = bfd_get_32 (abfd, note->descdata + 24); |
228e534f | 3046 | elf_tdata (abfd)->core->program |
d37c89e5 | 3047 | = _bfd_elfcore_strndup (abfd, note->descdata + 40, 16); |
228e534f | 3048 | elf_tdata (abfd)->core->command |
d37c89e5 AM |
3049 | = _bfd_elfcore_strndup (abfd, note->descdata + 56, 80); |
3050 | ||
3051 | return TRUE; | |
3052 | } | |
3053 | ||
183e98be AM |
3054 | static char * |
3055 | ppc64_elf_write_core_note (bfd *abfd, char *buf, int *bufsiz, int note_type, | |
3056 | ...) | |
3057 | { | |
3058 | switch (note_type) | |
3059 | { | |
3060 | default: | |
3061 | return NULL; | |
3062 | ||
3063 | case NT_PRPSINFO: | |
3064 | { | |
9ef6d1e3 | 3065 | char data[136] ATTRIBUTE_NONSTRING; |
183e98be AM |
3066 | va_list ap; |
3067 | ||
3068 | va_start (ap, note_type); | |
75cd47ed | 3069 | memset (data, 0, sizeof (data)); |
183e98be | 3070 | strncpy (data + 40, va_arg (ap, const char *), 16); |
be3e27bb | 3071 | #if GCC_VERSION == 8000 || GCC_VERSION == 8001 |
95da9854 | 3072 | DIAGNOSTIC_PUSH; |
be3e27bb | 3073 | /* GCC 8.0 and 8.1 warn about 80 equals destination size with |
95da9854 L |
3074 | -Wstringop-truncation: |
3075 | https://gcc.gnu.org/bugzilla/show_bug.cgi?id=85643 | |
3076 | */ | |
95da9854 L |
3077 | DIAGNOSTIC_IGNORE_STRINGOP_TRUNCATION; |
3078 | #endif | |
183e98be | 3079 | strncpy (data + 56, va_arg (ap, const char *), 80); |
be3e27bb | 3080 | #if GCC_VERSION == 8000 || GCC_VERSION == 8001 |
95da9854 | 3081 | DIAGNOSTIC_POP; |
fe75810f | 3082 | #endif |
183e98be AM |
3083 | va_end (ap); |
3084 | return elfcore_write_note (abfd, buf, bufsiz, | |
3085 | "CORE", note_type, data, sizeof (data)); | |
3086 | } | |
3087 | ||
3088 | case NT_PRSTATUS: | |
3089 | { | |
3090 | char data[504]; | |
3091 | va_list ap; | |
3092 | long pid; | |
3093 | int cursig; | |
3094 | const void *greg; | |
3095 | ||
3096 | va_start (ap, note_type); | |
3097 | memset (data, 0, 112); | |
3098 | pid = va_arg (ap, long); | |
3099 | bfd_put_32 (abfd, pid, data + 32); | |
3100 | cursig = va_arg (ap, int); | |
3101 | bfd_put_16 (abfd, cursig, data + 12); | |
3102 | greg = va_arg (ap, const void *); | |
3103 | memcpy (data + 112, greg, 384); | |
3104 | memset (data + 496, 0, 8); | |
3105 | va_end (ap); | |
3106 | return elfcore_write_note (abfd, buf, bufsiz, | |
3107 | "CORE", note_type, data, sizeof (data)); | |
3108 | } | |
3109 | } | |
3110 | } | |
3111 | ||
5d35169e AM |
3112 | /* Add extra PPC sections. */ |
3113 | ||
2cdcc330 | 3114 | static const struct bfd_elf_special_section ppc64_elf_special_sections[] = |
7f4d3958 | 3115 | { |
07d6d2b8 AM |
3116 | { STRING_COMMA_LEN (".plt"), 0, SHT_NOBITS, 0 }, |
3117 | { STRING_COMMA_LEN (".sbss"), -2, SHT_NOBITS, SHF_ALLOC + SHF_WRITE }, | |
0112cd26 | 3118 | { STRING_COMMA_LEN (".sdata"), -2, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE }, |
07d6d2b8 AM |
3119 | { STRING_COMMA_LEN (".toc"), 0, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE }, |
3120 | { STRING_COMMA_LEN (".toc1"), 0, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE }, | |
0112cd26 | 3121 | { STRING_COMMA_LEN (".tocbss"), 0, SHT_NOBITS, SHF_ALLOC + SHF_WRITE }, |
07d6d2b8 | 3122 | { NULL, 0, 0, 0, 0 } |
5d35169e AM |
3123 | }; |
3124 | ||
7c8fe5c4 AM |
3125 | enum _ppc64_sec_type { |
3126 | sec_normal = 0, | |
3127 | sec_opd = 1, | |
3128 | sec_toc = 2 | |
3129 | }; | |
3130 | ||
f0abc2a1 AM |
3131 | struct _ppc64_elf_section_data |
3132 | { | |
3133 | struct bfd_elf_section_data elf; | |
411e1bfb | 3134 | |
f0abc2a1 AM |
3135 | union |
3136 | { | |
51aecdc5 AM |
3137 | /* An array with one entry for each opd function descriptor, |
3138 | and some spares since opd entries may be either 16 or 24 bytes. */ | |
3139 | #define OPD_NDX(OFF) ((OFF) >> 4) | |
74f0fb50 AM |
3140 | struct _opd_sec_data |
3141 | { | |
3142 | /* Points to the function code section for local opd entries. */ | |
3143 | asection **func_sec; | |
3144 | ||
3145 | /* After editing .opd, adjust references to opd local syms. */ | |
3146 | long *adjust; | |
3147 | } opd; | |
7c8fe5c4 | 3148 | |
3a71aa26 AM |
3149 | /* An array for toc sections, indexed by offset/8. */ |
3150 | struct _toc_sec_data | |
3151 | { | |
3152 | /* Specifies the relocation symbol index used at a given toc offset. */ | |
3153 | unsigned *symndx; | |
3154 | ||
3155 | /* And the relocation addend. */ | |
3156 | bfd_vma *add; | |
3157 | } toc; | |
7c8fe5c4 AM |
3158 | } u; |
3159 | ||
3160 | enum _ppc64_sec_type sec_type:2; | |
411e1bfb | 3161 | |
7c8fe5c4 AM |
3162 | /* Flag set when small branches are detected. Used to |
3163 | select suitable defaults for the stub group size. */ | |
3164 | unsigned int has_14bit_branch:1; | |
3e04d765 AM |
3165 | |
3166 | /* Flag set when PLTCALL relocs are detected. */ | |
3167 | unsigned int has_pltcall:1; | |
f0abc2a1 AM |
3168 | }; |
3169 | ||
3170 | #define ppc64_elf_section_data(sec) \ | |
411e1bfb | 3171 | ((struct _ppc64_elf_section_data *) elf_section_data (sec)) |
f0abc2a1 AM |
3172 | |
3173 | static bfd_boolean | |
4ce794b7 | 3174 | ppc64_elf_new_section_hook (bfd *abfd, asection *sec) |
f0abc2a1 | 3175 | { |
f592407e AM |
3176 | if (!sec->used_by_bfd) |
3177 | { | |
3178 | struct _ppc64_elf_section_data *sdata; | |
3179 | bfd_size_type amt = sizeof (*sdata); | |
f0abc2a1 | 3180 | |
f592407e AM |
3181 | sdata = bfd_zalloc (abfd, amt); |
3182 | if (sdata == NULL) | |
3183 | return FALSE; | |
3184 | sec->used_by_bfd = sdata; | |
3185 | } | |
f0abc2a1 AM |
3186 | |
3187 | return _bfd_elf_new_section_hook (abfd, sec); | |
3188 | } | |
4025353c | 3189 | |
74f0fb50 | 3190 | static struct _opd_sec_data * |
4025353c AM |
3191 | get_opd_info (asection * sec) |
3192 | { | |
3193 | if (sec != NULL | |
3194 | && ppc64_elf_section_data (sec) != NULL | |
7c8fe5c4 | 3195 | && ppc64_elf_section_data (sec)->sec_type == sec_opd) |
74f0fb50 | 3196 | return &ppc64_elf_section_data (sec)->u.opd; |
4025353c AM |
3197 | return NULL; |
3198 | } | |
90e3cdf2 JJ |
3199 | \f |
3200 | /* Parameters for the qsort hook. */ | |
90e3cdf2 | 3201 | static bfd_boolean synthetic_relocatable; |
cd285db5 | 3202 | static asection *synthetic_opd; |
90e3cdf2 | 3203 | |
699733f6 | 3204 | /* qsort comparison function for ppc64_elf_get_synthetic_symtab. */ |
90e3cdf2 JJ |
3205 | |
3206 | static int | |
3207 | compare_symbols (const void *ap, const void *bp) | |
3208 | { | |
2cdcc330 AM |
3209 | const asymbol *a = *(const asymbol **) ap; |
3210 | const asymbol *b = *(const asymbol **) bp; | |
90e3cdf2 | 3211 | |
699733f6 AM |
3212 | /* Section symbols first. */ |
3213 | if ((a->flags & BSF_SECTION_SYM) && !(b->flags & BSF_SECTION_SYM)) | |
90e3cdf2 | 3214 | return -1; |
699733f6 | 3215 | if (!(a->flags & BSF_SECTION_SYM) && (b->flags & BSF_SECTION_SYM)) |
90e3cdf2 JJ |
3216 | return 1; |
3217 | ||
699733f6 | 3218 | /* then .opd symbols. */ |
cd285db5 AM |
3219 | if (synthetic_opd != NULL) |
3220 | { | |
3221 | if (strcmp (a->section->name, ".opd") == 0 | |
3222 | && strcmp (b->section->name, ".opd") != 0) | |
3223 | return -1; | |
3224 | if (strcmp (a->section->name, ".opd") != 0 | |
3225 | && strcmp (b->section->name, ".opd") == 0) | |
3226 | return 1; | |
3227 | } | |
90e3cdf2 | 3228 | |
699733f6 | 3229 | /* then other code symbols. */ |
2cdcc330 AM |
3230 | if (((a->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL)) |
3231 | == (SEC_CODE | SEC_ALLOC)) | |
3232 | && ((b->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL)) | |
3233 | != (SEC_CODE | SEC_ALLOC))) | |
90e3cdf2 JJ |
3234 | return -1; |
3235 | ||
2cdcc330 AM |
3236 | if (((a->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL)) |
3237 | != (SEC_CODE | SEC_ALLOC)) | |
3238 | && ((b->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL)) | |
3239 | == (SEC_CODE | SEC_ALLOC))) | |
90e3cdf2 JJ |
3240 | return 1; |
3241 | ||
3242 | if (synthetic_relocatable) | |
3243 | { | |
3244 | if (a->section->id < b->section->id) | |
3245 | return -1; | |
3246 | ||
3247 | if (a->section->id > b->section->id) | |
3248 | return 1; | |
3249 | } | |
3250 | ||
3251 | if (a->value + a->section->vma < b->value + b->section->vma) | |
3252 | return -1; | |
3253 | ||
3254 | if (a->value + a->section->vma > b->value + b->section->vma) | |
3255 | return 1; | |
3256 | ||
4d35a0aa AM |
3257 | /* For syms with the same value, prefer strong dynamic global function |
3258 | syms over other syms. */ | |
3259 | if ((a->flags & BSF_GLOBAL) != 0 && (b->flags & BSF_GLOBAL) == 0) | |
3260 | return -1; | |
3261 | ||
3262 | if ((a->flags & BSF_GLOBAL) == 0 && (b->flags & BSF_GLOBAL) != 0) | |
3263 | return 1; | |
3264 | ||
3265 | if ((a->flags & BSF_FUNCTION) != 0 && (b->flags & BSF_FUNCTION) == 0) | |
3266 | return -1; | |
3267 | ||
3268 | if ((a->flags & BSF_FUNCTION) == 0 && (b->flags & BSF_FUNCTION) != 0) | |
3269 | return 1; | |
3270 | ||
3271 | if ((a->flags & BSF_WEAK) == 0 && (b->flags & BSF_WEAK) != 0) | |
3272 | return -1; | |
3273 | ||
3274 | if ((a->flags & BSF_WEAK) != 0 && (b->flags & BSF_WEAK) == 0) | |
3275 | return 1; | |
3276 | ||
3277 | if ((a->flags & BSF_DYNAMIC) != 0 && (b->flags & BSF_DYNAMIC) == 0) | |
3278 | return -1; | |
3279 | ||
3280 | if ((a->flags & BSF_DYNAMIC) == 0 && (b->flags & BSF_DYNAMIC) != 0) | |
3281 | return 1; | |
3282 | ||
aaed6f5b | 3283 | return a > b; |
90e3cdf2 JJ |
3284 | } |
3285 | ||
699733f6 | 3286 | /* Search SYMS for a symbol of the given VALUE. */ |
90e3cdf2 | 3287 | |
699733f6 | 3288 | static asymbol * |
7292b3ac | 3289 | sym_exists_at (asymbol **syms, long lo, long hi, unsigned int id, bfd_vma value) |
90e3cdf2 | 3290 | { |
699733f6 | 3291 | long mid; |
90e3cdf2 | 3292 | |
7292b3ac | 3293 | if (id == (unsigned) -1) |
699733f6 AM |
3294 | { |
3295 | while (lo < hi) | |
3296 | { | |
3297 | mid = (lo + hi) >> 1; | |
3298 | if (syms[mid]->value + syms[mid]->section->vma < value) | |
3299 | lo = mid + 1; | |
3300 | else if (syms[mid]->value + syms[mid]->section->vma > value) | |
3301 | hi = mid; | |
3302 | else | |
3303 | return syms[mid]; | |
3304 | } | |
3305 | } | |
3306 | else | |
3307 | { | |
3308 | while (lo < hi) | |
3309 | { | |
3310 | mid = (lo + hi) >> 1; | |
3311 | if (syms[mid]->section->id < id) | |
3312 | lo = mid + 1; | |
3313 | else if (syms[mid]->section->id > id) | |
3314 | hi = mid; | |
3315 | else if (syms[mid]->value < value) | |
3316 | lo = mid + 1; | |
3317 | else if (syms[mid]->value > value) | |
3318 | hi = mid; | |
3319 | else | |
3320 | return syms[mid]; | |
3321 | } | |
3322 | } | |
3323 | return NULL; | |
90e3cdf2 JJ |
3324 | } |
3325 | ||
468392fb AM |
3326 | static bfd_boolean |
3327 | section_covers_vma (bfd *abfd ATTRIBUTE_UNUSED, asection *section, void *ptr) | |
3328 | { | |
3329 | bfd_vma vma = *(bfd_vma *) ptr; | |
3330 | return ((section->flags & SEC_ALLOC) != 0 | |
3331 | && section->vma <= vma | |
3332 | && vma < section->vma + section->size); | |
3333 | } | |
3334 | ||
699733f6 | 3335 | /* Create synthetic symbols, effectively restoring "dot-symbol" function |
c4b0b099 AM |
3336 | entry syms. Also generate @plt symbols for the glink branch table. |
3337 | Returns count of synthetic symbols in RET or -1 on error. */ | |
90e3cdf2 JJ |
3338 | |
3339 | static long | |
a7535cf3 AM |
3340 | ppc64_elf_get_synthetic_symtab (bfd *abfd, |
3341 | long static_count, asymbol **static_syms, | |
3342 | long dyn_count, asymbol **dyn_syms, | |
c9727e01 | 3343 | asymbol **ret) |
90e3cdf2 JJ |
3344 | { |
3345 | asymbol *s; | |
0ccf57bd | 3346 | size_t i, j, count; |
90e3cdf2 | 3347 | char *names; |
0ccf57bd | 3348 | size_t symcount, codesecsym, codesecsymend, secsymend, opdsymend; |
ee67d69a | 3349 | asection *opd = NULL; |
90e3cdf2 | 3350 | bfd_boolean relocatable = (abfd->flags & (EXEC_P | DYNAMIC)) == 0; |
a7535cf3 | 3351 | asymbol **syms; |
ee67d69a | 3352 | int abi = abiversion (abfd); |
90e3cdf2 JJ |
3353 | |
3354 | *ret = NULL; | |
3355 | ||
ee67d69a AM |
3356 | if (abi < 2) |
3357 | { | |
3358 | opd = bfd_get_section_by_name (abfd, ".opd"); | |
3359 | if (opd == NULL && abi == 1) | |
3360 | return 0; | |
3361 | } | |
90e3cdf2 | 3362 | |
a5259595 AM |
3363 | syms = NULL; |
3364 | codesecsym = 0; | |
3365 | codesecsymend = 0; | |
3366 | secsymend = 0; | |
3367 | opdsymend = 0; | |
3368 | symcount = 0; | |
3369 | if (opd != NULL) | |
c9727e01 | 3370 | { |
a5259595 AM |
3371 | symcount = static_count; |
3372 | if (!relocatable) | |
3373 | symcount += dyn_count; | |
3374 | if (symcount == 0) | |
3375 | return 0; | |
c9727e01 | 3376 | |
a5259595 AM |
3377 | syms = bfd_malloc ((symcount + 1) * sizeof (*syms)); |
3378 | if (syms == NULL) | |
3379 | return -1; | |
90e3cdf2 | 3380 | |
a5259595 AM |
3381 | if (!relocatable && static_count != 0 && dyn_count != 0) |
3382 | { | |
3383 | /* Use both symbol tables. */ | |
3384 | memcpy (syms, static_syms, static_count * sizeof (*syms)); | |
3385 | memcpy (syms + static_count, dyn_syms, | |
3386 | (dyn_count + 1) * sizeof (*syms)); | |
3387 | } | |
3388 | else if (!relocatable && static_count == 0) | |
3389 | memcpy (syms, dyn_syms, (symcount + 1) * sizeof (*syms)); | |
3390 | else | |
3391 | memcpy (syms, static_syms, (symcount + 1) * sizeof (*syms)); | |
90e3cdf2 | 3392 | |
0ccf57bd AM |
3393 | /* Trim uninteresting symbols. Interesting symbols are section, |
3394 | function, and notype symbols. */ | |
3395 | for (i = 0, j = 0; i < symcount; ++i) | |
3396 | if ((syms[i]->flags & (BSF_FILE | BSF_OBJECT | BSF_THREAD_LOCAL | |
3397 | | BSF_RELC | BSF_SRELC)) == 0) | |
3398 | syms[j++] = syms[i]; | |
3399 | symcount = j; | |
3400 | ||
a5259595 AM |
3401 | synthetic_relocatable = relocatable; |
3402 | synthetic_opd = opd; | |
3403 | qsort (syms, symcount, sizeof (*syms), compare_symbols); | |
90e3cdf2 | 3404 | |
a5259595 AM |
3405 | if (!relocatable && symcount > 1) |
3406 | { | |
bfa5bd2a PA |
3407 | /* Trim duplicate syms, since we may have merged the normal |
3408 | and dynamic symbols. Actually, we only care about syms | |
3409 | that have different values, so trim any with the same | |
3410 | value. Don't consider ifunc and ifunc resolver symbols | |
3411 | duplicates however, because GDB wants to know whether a | |
3412 | text symbol is an ifunc resolver. */ | |
a5259595 | 3413 | for (i = 1, j = 1; i < symcount; ++i) |
bfa5bd2a PA |
3414 | { |
3415 | const asymbol *s0 = syms[i - 1]; | |
3416 | const asymbol *s1 = syms[i]; | |
3417 | ||
3418 | if ((s0->value + s0->section->vma | |
3419 | != s1->value + s1->section->vma) | |
3420 | || ((s0->flags & BSF_GNU_INDIRECT_FUNCTION) | |
3421 | != (s1->flags & BSF_GNU_INDIRECT_FUNCTION))) | |
3422 | syms[j++] = syms[i]; | |
3423 | } | |
a5259595 AM |
3424 | symcount = j; |
3425 | } | |
699733f6 | 3426 | |
a5259595 AM |
3427 | i = 0; |
3428 | /* Note that here and in compare_symbols we can't compare opd and | |
3429 | sym->section directly. With separate debug info files, the | |
3430 | symbols will be extracted from the debug file while abfd passed | |
3431 | to this function is the real binary. */ | |
0ccf57bd | 3432 | if (strcmp (syms[i]->section->name, ".opd") == 0) |
a5259595 AM |
3433 | ++i; |
3434 | codesecsym = i; | |
3435 | ||
3436 | for (; i < symcount; ++i) | |
3437 | if (((syms[i]->section->flags & (SEC_CODE | SEC_ALLOC | |
3438 | | SEC_THREAD_LOCAL)) | |
3439 | != (SEC_CODE | SEC_ALLOC)) | |
3440 | || (syms[i]->flags & BSF_SECTION_SYM) == 0) | |
3441 | break; | |
3442 | codesecsymend = i; | |
3443 | ||
3444 | for (; i < symcount; ++i) | |
3445 | if ((syms[i]->flags & BSF_SECTION_SYM) == 0) | |
3446 | break; | |
3447 | secsymend = i; | |
3448 | ||
3449 | for (; i < symcount; ++i) | |
3450 | if (strcmp (syms[i]->section->name, ".opd") != 0) | |
3451 | break; | |
3452 | opdsymend = i; | |
3453 | ||
3454 | for (; i < symcount; ++i) | |
2cdcc330 AM |
3455 | if (((syms[i]->section->flags |
3456 | & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL))) | |
a5259595 AM |
3457 | != (SEC_CODE | SEC_ALLOC)) |
3458 | break; | |
3459 | symcount = i; | |
3460 | } | |
c9727e01 | 3461 | count = 0; |
90e3cdf2 | 3462 | |
699733f6 | 3463 | if (relocatable) |
90e3cdf2 | 3464 | { |
699733f6 AM |
3465 | bfd_boolean (*slurp_relocs) (bfd *, asection *, asymbol **, bfd_boolean); |
3466 | arelent *r; | |
3467 | size_t size; | |
0ccf57bd | 3468 | size_t relcount; |
90e3cdf2 | 3469 | |
468392fb AM |
3470 | if (opdsymend == secsymend) |
3471 | goto done; | |
3472 | ||
699733f6 | 3473 | slurp_relocs = get_elf_backend_data (abfd)->s->slurp_reloc_table; |
90e3cdf2 | 3474 | relcount = (opd->flags & SEC_RELOC) ? opd->reloc_count : 0; |
7356fed5 | 3475 | if (relcount == 0) |
c9727e01 | 3476 | goto done; |
90e3cdf2 | 3477 | |
7356fed5 AM |
3478 | if (!(*slurp_relocs) (abfd, opd, static_syms, FALSE)) |
3479 | { | |
3480 | count = -1; | |
3481 | goto done; | |
3482 | } | |
3483 | ||
699733f6 | 3484 | size = 0; |
595da8c5 | 3485 | for (i = secsymend, r = opd->relocation; i < opdsymend; ++i) |
699733f6 AM |
3486 | { |
3487 | asymbol *sym; | |
90e3cdf2 | 3488 | |
595da8c5 | 3489 | while (r < opd->relocation + relcount |
699733f6 AM |
3490 | && r->address < syms[i]->value + opd->vma) |
3491 | ++r; | |
90e3cdf2 | 3492 | |
595da8c5 | 3493 | if (r == opd->relocation + relcount) |
699733f6 | 3494 | break; |
90e3cdf2 | 3495 | |
699733f6 AM |
3496 | if (r->address != syms[i]->value + opd->vma) |
3497 | continue; | |
90e3cdf2 | 3498 | |
699733f6 AM |
3499 | if (r->howto->type != R_PPC64_ADDR64) |
3500 | continue; | |
90e3cdf2 | 3501 | |
699733f6 AM |
3502 | sym = *r->sym_ptr_ptr; |
3503 | if (!sym_exists_at (syms, opdsymend, symcount, | |
3504 | sym->section->id, sym->value + r->addend)) | |
3505 | { | |
3506 | ++count; | |
3507 | size += sizeof (asymbol); | |
3508 | size += strlen (syms[i]->name) + 2; | |
3509 | } | |
3510 | } | |
90e3cdf2 | 3511 | |
c4b0b099 AM |
3512 | if (size == 0) |
3513 | goto done; | |
699733f6 AM |
3514 | s = *ret = bfd_malloc (size); |
3515 | if (s == NULL) | |
3516 | { | |
7356fed5 | 3517 | count = -1; |
c9727e01 | 3518 | goto done; |
699733f6 | 3519 | } |
90e3cdf2 | 3520 | |
699733f6 | 3521 | names = (char *) (s + count); |
90e3cdf2 | 3522 | |
595da8c5 | 3523 | for (i = secsymend, r = opd->relocation; i < opdsymend; ++i) |
90e3cdf2 | 3524 | { |
699733f6 | 3525 | asymbol *sym; |
90e3cdf2 | 3526 | |
595da8c5 | 3527 | while (r < opd->relocation + relcount |
699733f6 AM |
3528 | && r->address < syms[i]->value + opd->vma) |
3529 | ++r; | |
90e3cdf2 | 3530 | |
595da8c5 | 3531 | if (r == opd->relocation + relcount) |
699733f6 AM |
3532 | break; |
3533 | ||
3534 | if (r->address != syms[i]->value + opd->vma) | |
3535 | continue; | |
3536 | ||
3537 | if (r->howto->type != R_PPC64_ADDR64) | |
3538 | continue; | |
90e3cdf2 | 3539 | |
699733f6 AM |
3540 | sym = *r->sym_ptr_ptr; |
3541 | if (!sym_exists_at (syms, opdsymend, symcount, | |
3542 | sym->section->id, sym->value + r->addend)) | |
3543 | { | |
3544 | size_t len; | |
3545 | ||
3546 | *s = *syms[i]; | |
6ba2a415 | 3547 | s->flags |= BSF_SYNTHETIC; |
699733f6 AM |
3548 | s->section = sym->section; |
3549 | s->value = sym->value + r->addend; | |
3550 | s->name = names; | |
3551 | *names++ = '.'; | |
3552 | len = strlen (syms[i]->name); | |
3553 | memcpy (names, syms[i]->name, len + 1); | |
3554 | names += len + 1; | |
6f610d07 UW |
3555 | /* Have udata.p point back to the original symbol this |
3556 | synthetic symbol was derived from. */ | |
3557 | s->udata.p = syms[i]; | |
699733f6 AM |
3558 | s++; |
3559 | } | |
3560 | } | |
3561 | } | |
3562 | else | |
90e3cdf2 | 3563 | { |
468392fb | 3564 | bfd_boolean (*slurp_relocs) (bfd *, asection *, asymbol **, bfd_boolean); |
ee67d69a | 3565 | bfd_byte *contents = NULL; |
699733f6 | 3566 | size_t size; |
0ccf57bd | 3567 | size_t plt_count = 0; |
468392fb AM |
3568 | bfd_vma glink_vma = 0, resolv_vma = 0; |
3569 | asection *dynamic, *glink = NULL, *relplt = NULL; | |
3570 | arelent *p; | |
90e3cdf2 | 3571 | |
ee67d69a | 3572 | if (opd != NULL && !bfd_malloc_and_get_section (abfd, opd, &contents)) |
699733f6 | 3573 | { |
c4b0b099 AM |
3574 | free_contents_and_exit_err: |
3575 | count = -1; | |
ee67d69a | 3576 | free_contents_and_exit: |
699733f6 | 3577 | if (contents) |
ee67d69a | 3578 | free (contents); |
c9727e01 | 3579 | goto done; |
699733f6 | 3580 | } |
90e3cdf2 | 3581 | |
699733f6 AM |
3582 | size = 0; |
3583 | for (i = secsymend; i < opdsymend; ++i) | |
3584 | { | |
3585 | bfd_vma ent; | |
90e3cdf2 | 3586 | |
5ef11c02 AM |
3587 | /* Ignore bogus symbols. */ |
3588 | if (syms[i]->value > opd->size - 8) | |
3589 | continue; | |
3590 | ||
699733f6 AM |
3591 | ent = bfd_get_64 (abfd, contents + syms[i]->value); |
3592 | if (!sym_exists_at (syms, opdsymend, symcount, -1, ent)) | |
3593 | { | |
3594 | ++count; | |
3595 | size += sizeof (asymbol); | |
3596 | size += strlen (syms[i]->name) + 2; | |
3597 | } | |
3598 | } | |
90e3cdf2 | 3599 | |
468392fb | 3600 | /* Get start of .glink stubs from DT_PPC64_GLINK. */ |
066ee829 AM |
3601 | if (dyn_count != 0 |
3602 | && (dynamic = bfd_get_section_by_name (abfd, ".dynamic")) != NULL) | |
468392fb AM |
3603 | { |
3604 | bfd_byte *dynbuf, *extdyn, *extdynend; | |
3605 | size_t extdynsize; | |
3606 | void (*swap_dyn_in) (bfd *, const void *, Elf_Internal_Dyn *); | |
3607 | ||
3608 | if (!bfd_malloc_and_get_section (abfd, dynamic, &dynbuf)) | |
c4b0b099 | 3609 | goto free_contents_and_exit_err; |
468392fb AM |
3610 | |
3611 | extdynsize = get_elf_backend_data (abfd)->s->sizeof_dyn; | |
3612 | swap_dyn_in = get_elf_backend_data (abfd)->s->swap_dyn_in; | |
3613 | ||
3614 | extdyn = dynbuf; | |
3615 | extdynend = extdyn + dynamic->size; | |
3616 | for (; extdyn < extdynend; extdyn += extdynsize) | |
3617 | { | |
3618 | Elf_Internal_Dyn dyn; | |
3619 | (*swap_dyn_in) (abfd, extdyn, &dyn); | |
3620 | ||
3621 | if (dyn.d_tag == DT_NULL) | |
3622 | break; | |
3623 | ||
3624 | if (dyn.d_tag == DT_PPC64_GLINK) | |
3625 | { | |
9e390558 AM |
3626 | /* The first glink stub starts at DT_PPC64_GLINK plus 32. |
3627 | See comment in ppc64_elf_finish_dynamic_sections. */ | |
3628 | glink_vma = dyn.d_un.d_val + 8 * 4; | |
468392fb AM |
3629 | /* The .glink section usually does not survive the final |
3630 | link; search for the section (usually .text) where the | |
3631 | glink stubs now reside. */ | |
3632 | glink = bfd_sections_find_if (abfd, section_covers_vma, | |
3633 | &glink_vma); | |
3634 | break; | |
3635 | } | |
3636 | } | |
3637 | ||
3638 | free (dynbuf); | |
3639 | } | |
3640 | ||
3641 | if (glink != NULL) | |
3642 | { | |
3643 | /* Determine __glink trampoline by reading the relative branch | |
3644 | from the first glink stub. */ | |
3645 | bfd_byte buf[4]; | |
b9e5796b AM |
3646 | unsigned int off = 0; |
3647 | ||
3648 | while (bfd_get_section_contents (abfd, glink, buf, | |
3649 | glink_vma + off - glink->vma, 4)) | |
468392fb AM |
3650 | { |
3651 | unsigned int insn = bfd_get_32 (abfd, buf); | |
3652 | insn ^= B_DOT; | |
3653 | if ((insn & ~0x3fffffc) == 0) | |
b9e5796b | 3654 | { |
2cdcc330 AM |
3655 | resolv_vma |
3656 | = glink_vma + off + (insn ^ 0x2000000) - 0x2000000; | |
b9e5796b AM |
3657 | break; |
3658 | } | |
3659 | off += 4; | |
3660 | if (off > 4) | |
3661 | break; | |
468392fb AM |
3662 | } |
3663 | ||
3664 | if (resolv_vma) | |
3665 | size += sizeof (asymbol) + sizeof ("__glink_PLTresolve"); | |
468392fb | 3666 | |
066ee829 AM |
3667 | relplt = bfd_get_section_by_name (abfd, ".rela.plt"); |
3668 | if (relplt != NULL) | |
3669 | { | |
3670 | slurp_relocs = get_elf_backend_data (abfd)->s->slurp_reloc_table; | |
2cdcc330 | 3671 | if (!(*slurp_relocs) (abfd, relplt, dyn_syms, TRUE)) |
c4b0b099 | 3672 | goto free_contents_and_exit_err; |
68ffbac6 | 3673 | |
066ee829 AM |
3674 | plt_count = relplt->size / sizeof (Elf64_External_Rela); |
3675 | size += plt_count * sizeof (asymbol); | |
468392fb | 3676 | |
066ee829 AM |
3677 | p = relplt->relocation; |
3678 | for (i = 0; i < plt_count; i++, p++) | |
e054468f AM |
3679 | { |
3680 | size += strlen ((*p->sym_ptr_ptr)->name) + sizeof ("@plt"); | |
3681 | if (p->addend != 0) | |
3682 | size += sizeof ("+0x") - 1 + 16; | |
3683 | } | |
066ee829 | 3684 | } |
468392fb AM |
3685 | } |
3686 | ||
c4b0b099 AM |
3687 | if (size == 0) |
3688 | goto free_contents_and_exit; | |
699733f6 AM |
3689 | s = *ret = bfd_malloc (size); |
3690 | if (s == NULL) | |
c4b0b099 | 3691 | goto free_contents_and_exit_err; |
90e3cdf2 | 3692 | |
468392fb | 3693 | names = (char *) (s + count + plt_count + (resolv_vma != 0)); |
90e3cdf2 | 3694 | |
699733f6 | 3695 | for (i = secsymend; i < opdsymend; ++i) |
90e3cdf2 | 3696 | { |
699733f6 | 3697 | bfd_vma ent; |
90e3cdf2 | 3698 | |
5ef11c02 AM |
3699 | if (syms[i]->value > opd->size - 8) |
3700 | continue; | |
3701 | ||
699733f6 AM |
3702 | ent = bfd_get_64 (abfd, contents + syms[i]->value); |
3703 | if (!sym_exists_at (syms, opdsymend, symcount, -1, ent)) | |
90e3cdf2 | 3704 | { |
0ccf57bd | 3705 | size_t lo, hi; |
699733f6 | 3706 | size_t len; |
c9727e01 | 3707 | asection *sec = abfd->sections; |
90e3cdf2 | 3708 | |
699733f6 AM |
3709 | *s = *syms[i]; |
3710 | lo = codesecsym; | |
3711 | hi = codesecsymend; | |
3712 | while (lo < hi) | |
3713 | { | |
0ccf57bd | 3714 | size_t mid = (lo + hi) >> 1; |
699733f6 AM |
3715 | if (syms[mid]->section->vma < ent) |
3716 | lo = mid + 1; | |
3717 | else if (syms[mid]->section->vma > ent) | |
3718 | hi = mid; | |
3719 | else | |
c9727e01 AM |
3720 | { |
3721 | sec = syms[mid]->section; | |
3722 | break; | |
3723 | } | |
699733f6 AM |
3724 | } |
3725 | ||
c9727e01 | 3726 | if (lo >= hi && lo > codesecsym) |
699733f6 | 3727 | sec = syms[lo - 1]->section; |
699733f6 AM |
3728 | |
3729 | for (; sec != NULL; sec = sec->next) | |
3730 | { | |
3731 | if (sec->vma > ent) | |
3732 | break; | |
63524580 JK |
3733 | /* SEC_LOAD may not be set if SEC is from a separate debug |
3734 | info file. */ | |
3735 | if ((sec->flags & SEC_ALLOC) == 0) | |
699733f6 AM |
3736 | break; |
3737 | if ((sec->flags & SEC_CODE) != 0) | |
3738 | s->section = sec; | |
3739 | } | |
6ba2a415 | 3740 | s->flags |= BSF_SYNTHETIC; |
699733f6 AM |
3741 | s->value = ent - s->section->vma; |
3742 | s->name = names; | |
3743 | *names++ = '.'; | |
3744 | len = strlen (syms[i]->name); | |
3745 | memcpy (names, syms[i]->name, len + 1); | |
3746 | names += len + 1; | |
6f610d07 UW |
3747 | /* Have udata.p point back to the original symbol this |
3748 | synthetic symbol was derived from. */ | |
3749 | s->udata.p = syms[i]; | |
699733f6 | 3750 | s++; |
90e3cdf2 | 3751 | } |
90e3cdf2 | 3752 | } |
699733f6 | 3753 | free (contents); |
468392fb AM |
3754 | |
3755 | if (glink != NULL && relplt != NULL) | |
3756 | { | |
3757 | if (resolv_vma) | |
3758 | { | |
3759 | /* Add a symbol for the main glink trampoline. */ | |
86a4952b | 3760 | memset (s, 0, sizeof *s); |
468392fb | 3761 | s->the_bfd = abfd; |
6ba2a415 | 3762 | s->flags = BSF_GLOBAL | BSF_SYNTHETIC; |
468392fb AM |
3763 | s->section = glink; |
3764 | s->value = resolv_vma - glink->vma; | |
3765 | s->name = names; | |
2cdcc330 AM |
3766 | memcpy (names, "__glink_PLTresolve", |
3767 | sizeof ("__glink_PLTresolve")); | |
468392fb AM |
3768 | names += sizeof ("__glink_PLTresolve"); |
3769 | s++; | |
3770 | count++; | |
3771 | } | |
3772 | ||
3773 | /* FIXME: It would be very much nicer to put sym@plt on the | |
3774 | stub rather than on the glink branch table entry. The | |
3775 | objdump disassembler would then use a sensible symbol | |
3776 | name on plt calls. The difficulty in doing so is | |
3777 | a) finding the stubs, and, | |
3778 | b) matching stubs against plt entries, and, | |
3779 | c) there can be multiple stubs for a given plt entry. | |
3780 | ||
3781 | Solving (a) could be done by code scanning, but older | |
3782 | ppc64 binaries used different stubs to current code. | |
3783 | (b) is the tricky one since you need to known the toc | |
3784 | pointer for at least one function that uses a pic stub to | |
3785 | be able to calculate the plt address referenced. | |
3786 | (c) means gdb would need to set multiple breakpoints (or | |
3787 | find the glink branch itself) when setting breakpoints | |
3788 | for pending shared library loads. */ | |
3789 | p = relplt->relocation; | |
3790 | for (i = 0; i < plt_count; i++, p++) | |
3791 | { | |
3792 | size_t len; | |
3793 | ||
3794 | *s = **p->sym_ptr_ptr; | |
3795 | /* Undefined syms won't have BSF_LOCAL or BSF_GLOBAL set. Since | |
3796 | we are defining a symbol, ensure one of them is set. */ | |
3797 | if ((s->flags & BSF_LOCAL) == 0) | |
3798 | s->flags |= BSF_GLOBAL; | |
6ba2a415 | 3799 | s->flags |= BSF_SYNTHETIC; |
468392fb AM |
3800 | s->section = glink; |
3801 | s->value = glink_vma - glink->vma; | |
3802 | s->name = names; | |
3803 | s->udata.p = NULL; | |
3804 | len = strlen ((*p->sym_ptr_ptr)->name); | |
3805 | memcpy (names, (*p->sym_ptr_ptr)->name, len); | |
3806 | names += len; | |
e054468f AM |
3807 | if (p->addend != 0) |
3808 | { | |
3809 | memcpy (names, "+0x", sizeof ("+0x") - 1); | |
3810 | names += sizeof ("+0x") - 1; | |
3811 | bfd_sprintf_vma (abfd, names, p->addend); | |
3812 | names += strlen (names); | |
3813 | } | |
468392fb AM |
3814 | memcpy (names, "@plt", sizeof ("@plt")); |
3815 | names += sizeof ("@plt"); | |
3816 | s++; | |
b9e5796b AM |
3817 | if (abi < 2) |
3818 | { | |
3819 | glink_vma += 8; | |
3820 | if (i >= 0x8000) | |
3821 | glink_vma += 4; | |
3822 | } | |
3823 | else | |
468392fb AM |
3824 | glink_vma += 4; |
3825 | } | |
3826 | count += plt_count; | |
3827 | } | |
90e3cdf2 JJ |
3828 | } |
3829 | ||
c9727e01 | 3830 | done: |
a7535cf3 | 3831 | free (syms); |
90e3cdf2 JJ |
3832 | return count; |
3833 | } | |
5bd4f169 | 3834 | \f |
65f38f15 AM |
3835 | /* The following functions are specific to the ELF linker, while |
3836 | functions above are used generally. Those named ppc64_elf_* are | |
3837 | called by the main ELF linker code. They appear in this file more | |
3838 | or less in the order in which they are called. eg. | |
3839 | ppc64_elf_check_relocs is called early in the link process, | |
3840 | ppc64_elf_finish_dynamic_sections is one of the last functions | |
e86ce104 AM |
3841 | called. |
3842 | ||
3843 | PowerPC64-ELF uses a similar scheme to PowerPC64-XCOFF in that | |
3844 | functions have both a function code symbol and a function descriptor | |
3845 | symbol. A call to foo in a relocatable object file looks like: | |
3846 | ||
3847 | . .text | |
3848 | . x: | |
3849 | . bl .foo | |
3850 | . nop | |
3851 | ||
3852 | The function definition in another object file might be: | |
3853 | ||
3854 | . .section .opd | |
3855 | . foo: .quad .foo | |
3856 | . .quad .TOC.@tocbase | |
3857 | . .quad 0 | |
3858 | . | |
3859 | . .text | |
3860 | . .foo: blr | |
3861 | ||
3862 | When the linker resolves the call during a static link, the branch | |
3863 | unsurprisingly just goes to .foo and the .opd information is unused. | |
3864 | If the function definition is in a shared library, things are a little | |
3865 | different: The call goes via a plt call stub, the opd information gets | |
3866 | copied to the plt, and the linker patches the nop. | |
3867 | ||
3868 | . x: | |
3869 | . bl .foo_stub | |
3870 | . ld 2,40(1) | |
3871 | . | |
3872 | . | |
3873 | . .foo_stub: | |
71a39c98 AM |
3874 | . std 2,40(1) # in practice, the call stub |
3875 | . addis 11,2,Lfoo@toc@ha # is slightly optimized, but | |
3876 | . addi 11,11,Lfoo@toc@l # this is the general idea | |
3877 | . ld 12,0(11) | |
3878 | . ld 2,8(11) | |
3879 | . mtctr 12 | |
3880 | . ld 11,16(11) | |
e86ce104 AM |
3881 | . bctr |
3882 | . | |
3883 | . .section .plt | |
3884 | . Lfoo: reloc (R_PPC64_JMP_SLOT, foo) | |
3885 | ||
3886 | The "reloc ()" notation is supposed to indicate that the linker emits | |
3887 | an R_PPC64_JMP_SLOT reloc against foo. The dynamic linker does the opd | |
3888 | copying. | |
3889 | ||
3890 | What are the difficulties here? Well, firstly, the relocations | |
3891 | examined by the linker in check_relocs are against the function code | |
3892 | sym .foo, while the dynamic relocation in the plt is emitted against | |
3893 | the function descriptor symbol, foo. Somewhere along the line, we need | |
3894 | to carefully copy dynamic link information from one symbol to the other. | |
3895 | Secondly, the generic part of the elf linker will make .foo a dynamic | |
3896 | symbol as is normal for most other backends. We need foo dynamic | |
3897 | instead, at least for an application final link. However, when | |
3898 | creating a shared library containing foo, we need to have both symbols | |
3899 | dynamic so that references to .foo are satisfied during the early | |
3900 | stages of linking. Otherwise the linker might decide to pull in a | |
8387904d AM |
3901 | definition from some other object, eg. a static library. |
3902 | ||
3903 | Update: As of August 2004, we support a new convention. Function | |
3904 | calls may use the function descriptor symbol, ie. "bl foo". This | |
3905 | behaves exactly as "bl .foo". */ | |
65f38f15 | 3906 | |
7c8bbca5 AM |
3907 | /* Of those relocs that might be copied as dynamic relocs, this |
3908 | function selects those that must be copied when linking a shared | |
3909 | library or PIE, even when the symbol is local. */ | |
65f38f15 | 3910 | |
1d483afe AM |
3911 | static int |
3912 | must_be_dyn_reloc (struct bfd_link_info *info, | |
3913 | enum elf_ppc64_reloc_type r_type) | |
3914 | { | |
3915 | switch (r_type) | |
3916 | { | |
3917 | default: | |
7c8bbca5 AM |
3918 | /* Only relative relocs can be resolved when the object load |
3919 | address isn't fixed. DTPREL64 is excluded because the | |
3920 | dynamic linker needs to differentiate global dynamic from | |
3921 | local dynamic __tls_index pairs when PPC64_OPT_TLS is set. */ | |
1d483afe AM |
3922 | return 1; |
3923 | ||
3924 | case R_PPC64_REL32: | |
3925 | case R_PPC64_REL64: | |
3926 | case R_PPC64_REL30: | |
3927 | return 0; | |
3928 | ||
3929 | case R_PPC64_TPREL16: | |
3930 | case R_PPC64_TPREL16_LO: | |
3931 | case R_PPC64_TPREL16_HI: | |
3932 | case R_PPC64_TPREL16_HA: | |
3933 | case R_PPC64_TPREL16_DS: | |
3934 | case R_PPC64_TPREL16_LO_DS: | |
f9c6b907 AM |
3935 | case R_PPC64_TPREL16_HIGH: |
3936 | case R_PPC64_TPREL16_HIGHA: | |
1d483afe AM |
3937 | case R_PPC64_TPREL16_HIGHER: |
3938 | case R_PPC64_TPREL16_HIGHERA: | |
3939 | case R_PPC64_TPREL16_HIGHEST: | |
3940 | case R_PPC64_TPREL16_HIGHESTA: | |
3941 | case R_PPC64_TPREL64: | |
7c8bbca5 AM |
3942 | /* These relocations are relative but in a shared library the |
3943 | linker doesn't know the thread pointer base. */ | |
3944 | return bfd_link_dll (info); | |
1d483afe AM |
3945 | } |
3946 | } | |
65f38f15 | 3947 | |
f4656909 AM |
3948 | /* If ELIMINATE_COPY_RELOCS is non-zero, the linker will try to avoid |
3949 | copying dynamic variables from a shared lib into an app's dynbss | |
3950 | section, and instead use a dynamic relocation to point into the | |
5d35169e AM |
3951 | shared lib. With code that gcc generates, it's vital that this be |
3952 | enabled; In the PowerPC64 ABI, the address of a function is actually | |
3953 | the address of a function descriptor, which resides in the .opd | |
3954 | section. gcc uses the descriptor directly rather than going via the | |
3955 | GOT as some other ABI's do, which means that initialized function | |
3956 | pointers must reference the descriptor. Thus, a function pointer | |
3957 | initialized to the address of a function in a shared library will | |
3958 | either require a copy reloc, or a dynamic reloc. Using a copy reloc | |
4cc11e76 | 3959 | redefines the function descriptor symbol to point to the copy. This |
5d35169e AM |
3960 | presents a problem as a plt entry for that function is also |
3961 | initialized from the function descriptor symbol and the copy reloc | |
3962 | may not be initialized first. */ | |
a23b6845 | 3963 | #define ELIMINATE_COPY_RELOCS 1 |
f4656909 | 3964 | |
721956f4 | 3965 | /* Section name for stubs is the associated section name plus this |
29942be8 NC |
3966 | string. */ |
3967 | #define STUB_SUFFIX ".stub" | |
721956f4 AM |
3968 | |
3969 | /* Linker stubs. | |
3970 | ppc_stub_long_branch: | |
3971 | Used when a 14 bit branch (or even a 24 bit branch) can't reach its | |
3972 | destination, but a 24 bit branch in a stub section will reach. | |
3973 | . b dest | |
3974 | ||
3975 | ppc_stub_plt_branch: | |
3976 | Similar to the above, but a 24 bit branch in the stub section won't | |
3977 | reach its destination. | |
71a39c98 AM |
3978 | . addis %r11,%r2,xxx@toc@ha |
3979 | . ld %r12,xxx@toc@l(%r11) | |
3980 | . mtctr %r12 | |
721956f4 AM |
3981 | . bctr |
3982 | ||
3983 | ppc_stub_plt_call: | |
2c66dc6c AM |
3984 | Used to call a function in a shared library. If it so happens that |
3985 | the plt entry referenced crosses a 64k boundary, then an extra | |
71a39c98 | 3986 | "addi %r11,%r11,xxx@toc@l" will be inserted before the "mtctr". |
05d0e962 | 3987 | ppc_stub_plt_call_r2save starts with "std %r2,40(%r1)". |
71a39c98 AM |
3988 | . addis %r11,%r2,xxx@toc@ha |
3989 | . ld %r12,xxx+0@toc@l(%r11) | |
3990 | . mtctr %r12 | |
3991 | . ld %r2,xxx+8@toc@l(%r11) | |
3992 | . ld %r11,xxx+16@toc@l(%r11) | |
721956f4 | 3993 | . bctr |
ad8e1ba5 AM |
3994 | |
3995 | ppc_stub_long_branch and ppc_stub_plt_branch may also have additional | |
3996 | code to adjust the value and save r2 to support multiple toc sections. | |
3997 | A ppc_stub_long_branch with an r2 offset looks like: | |
3998 | . std %r2,40(%r1) | |
3999 | . addis %r2,%r2,off@ha | |
4000 | . addi %r2,%r2,off@l | |
4001 | . b dest | |
4002 | ||
4003 | A ppc_stub_plt_branch with an r2 offset looks like: | |
4004 | . std %r2,40(%r1) | |
71a39c98 AM |
4005 | . addis %r11,%r2,xxx@toc@ha |
4006 | . ld %r12,xxx@toc@l(%r11) | |
ad8e1ba5 AM |
4007 | . addis %r2,%r2,off@ha |
4008 | . addi %r2,%r2,off@l | |
71a39c98 | 4009 | . mtctr %r12 |
ad8e1ba5 | 4010 | . bctr |
ac2df442 | 4011 | |
05d0e962 AM |
4012 | All of the above stubs are shown as their ELFv1 variants. ELFv2 |
4013 | variants exist too, simpler for plt calls since a new toc pointer | |
4014 | and static chain are not loaded by the stub. In addition, ELFv2 | |
4015 | has some more complex stubs to handle calls marked with NOTOC | |
4016 | relocs from functions where r2 is not a valid toc pointer. These | |
4017 | come in two flavours, the ones shown below, and _both variants that | |
4018 | start with "std %r2,24(%r1)" to save r2 in the unlikely event that | |
4019 | one call is from a function where r2 is used as the toc pointer but | |
4020 | needs a toc adjusting stub for small-model multi-toc, and another | |
4021 | call is from a function where r2 is not valid. | |
4022 | ppc_stub_long_branch_notoc: | |
4023 | . mflr %r12 | |
4024 | . bcl 20,31,1f | |
4025 | . 1: | |
4026 | . mflr %r11 | |
4027 | . mtlr %r12 | |
2cdcc330 AM |
4028 | . addis %r12,%r11,dest-1b@ha |
4029 | . addi %r12,%r12,dest-1b@l | |
05d0e962 AM |
4030 | . b dest |
4031 | ||
4032 | ppc_stub_plt_branch_notoc: | |
4033 | . mflr %r12 | |
4034 | . bcl 20,31,1f | |
4035 | . 1: | |
4036 | . mflr %r11 | |
4037 | . mtlr %r12 | |
4038 | . lis %r12,xxx-1b@highest | |
4039 | . ori %r12,xxx-1b@higher | |
4040 | . sldi %r12,%r12,32 | |
4041 | . oris %r12,%r12,xxx-1b@hi | |
4042 | . ori %r12,%r12,xxx-1b@l | |
4043 | . add %r12,%r11,%r12 | |
4044 | . mtctr %r12 | |
4045 | . bctr | |
4046 | ||
4047 | ppc_stub_plt_call_notoc: | |
4048 | . mflr %r12 | |
4049 | . bcl 20,31,1f | |
4050 | . 1: | |
4051 | . mflr %r11 | |
4052 | . mtlr %r12 | |
4053 | . lis %r12,xxx-1b@highest | |
4054 | . ori %r12,xxx-1b@higher | |
4055 | . sldi %r12,%r12,32 | |
4056 | . oris %r12,%r12,xxx-1b@hi | |
4057 | . ori %r12,%r12,xxx-1b@l | |
4058 | . ldx %r12,%r11,%r12 | |
4059 | . mtctr %r12 | |
4060 | . bctr | |
4061 | ||
4062 | In cases where the high instructions would add zero, they are | |
4063 | omitted and following instructions modified in some cases. | |
4064 | ||
4065 | For a given stub group (a set of sections all using the same toc | |
4066 | pointer value) there will be just one stub type used for any | |
4067 | particular function symbol. For example, if printf is called from | |
4068 | code with the tocsave optimization (ie. r2 saved in function | |
4069 | prologue) and therefore calls use a ppc_stub_plt_call linkage stub, | |
4070 | and from other code without the tocsave optimization requiring a | |
4071 | ppc_stub_plt_call_r2save linkage stub, a single stub of the latter | |
4072 | type will be created. Calls with the tocsave optimization will | |
4073 | enter this stub after the instruction saving r2. A similar | |
4074 | situation exists when calls are marked with R_PPC64_REL24_NOTOC | |
4075 | relocations. These require a ppc_stub_plt_call_notoc linkage stub | |
4076 | to call an external function like printf. If other calls to printf | |
4077 | require a ppc_stub_plt_call linkage stub then a single | |
4078 | ppc_stub_plt_call_notoc linkage stub will be used for both types of | |
4079 | call. If other calls to printf require a ppc_stub_plt_call_r2save | |
4080 | linkage stub then a single ppc_stub_plt_call_both linkage stub will | |
4081 | be created and calls not requiring r2 to be saved will enter the | |
4082 | stub after the r2 save instruction. There is an analogous | |
4083 | hierarchy of long branch and plt branch stubs for local call | |
4084 | linkage. */ | |
721956f4 | 4085 | |
2cdcc330 AM |
4086 | enum ppc_stub_type |
4087 | { | |
721956f4 AM |
4088 | ppc_stub_none, |
4089 | ppc_stub_long_branch, | |
ad8e1ba5 | 4090 | ppc_stub_long_branch_r2off, |
05d0e962 AM |
4091 | ppc_stub_long_branch_notoc, |
4092 | ppc_stub_long_branch_both, /* r2off and notoc variants both needed. */ | |
721956f4 | 4093 | ppc_stub_plt_branch, |
ad8e1ba5 | 4094 | ppc_stub_plt_branch_r2off, |
05d0e962 AM |
4095 | ppc_stub_plt_branch_notoc, |
4096 | ppc_stub_plt_branch_both, | |
794e51c0 | 4097 | ppc_stub_plt_call, |
7341d5e2 | 4098 | ppc_stub_plt_call_r2save, |
05d0e962 AM |
4099 | ppc_stub_plt_call_notoc, |
4100 | ppc_stub_plt_call_both, | |
a4b6fadd AM |
4101 | ppc_stub_global_entry, |
4102 | ppc_stub_save_res | |
721956f4 AM |
4103 | }; |
4104 | ||
6f20ed8a AM |
4105 | /* Information on stub grouping. */ |
4106 | struct map_stub | |
4107 | { | |
4108 | /* The stub section. */ | |
4109 | asection *stub_sec; | |
4110 | /* This is the section to which stubs in the group will be attached. */ | |
4111 | asection *link_sec; | |
a4b6fadd AM |
4112 | /* Next group. */ |
4113 | struct map_stub *next; | |
4114 | /* Whether to emit a copy of register save/restore functions in this | |
4115 | group. */ | |
4116 | int needs_save_res; | |
df136d64 AM |
4117 | /* Current offset within stubs after the insn restoring lr in a |
4118 | _notoc or _both stub using bcl for pc-relative addressing, or | |
4119 | after the insn restoring lr in a __tls_get_addr_opt plt stub. */ | |
4120 | unsigned int lr_restore; | |
4121 | /* Accumulated size of EH info emitted to describe return address | |
4122 | if stubs modify lr. Does not include 17 byte FDE header. */ | |
4123 | unsigned int eh_size; | |
4124 | /* Offset in glink_eh_frame to the start of EH info for this group. */ | |
4125 | unsigned int eh_base; | |
6f20ed8a AM |
4126 | }; |
4127 | ||
2cdcc330 AM |
4128 | struct ppc_stub_hash_entry |
4129 | { | |
721956f4 AM |
4130 | /* Base hash table entry structure. */ |
4131 | struct bfd_hash_entry root; | |
4132 | ||
ad8e1ba5 AM |
4133 | enum ppc_stub_type stub_type; |
4134 | ||
6f20ed8a AM |
4135 | /* Group information. */ |
4136 | struct map_stub *group; | |
721956f4 AM |
4137 | |
4138 | /* Offset within stub_sec of the beginning of this stub. */ | |
4139 | bfd_vma stub_offset; | |
4140 | ||
4141 | /* Given the symbol's value and its section we can determine its final | |
4142 | value when building the stubs (so the stub knows where to jump. */ | |
4143 | bfd_vma target_value; | |
4144 | asection *target_section; | |
4145 | ||
721956f4 AM |
4146 | /* The symbol table entry, if any, that this was derived from. */ |
4147 | struct ppc_link_hash_entry *h; | |
e054468f | 4148 | struct plt_entry *plt_ent; |
721956f4 | 4149 | |
2d7ad24e AM |
4150 | /* Symbol type. */ |
4151 | unsigned char symtype; | |
4152 | ||
6911b7dc AM |
4153 | /* Symbol st_other. */ |
4154 | unsigned char other; | |
721956f4 AM |
4155 | }; |
4156 | ||
2cdcc330 AM |
4157 | struct ppc_branch_hash_entry |
4158 | { | |
721956f4 AM |
4159 | /* Base hash table entry structure. */ |
4160 | struct bfd_hash_entry root; | |
4161 | ||
c456f082 | 4162 | /* Offset within branch lookup table. */ |
721956f4 AM |
4163 | unsigned int offset; |
4164 | ||
4165 | /* Generation marker. */ | |
4166 | unsigned int iter; | |
4167 | }; | |
65f38f15 | 4168 | |
19e08130 AM |
4169 | /* Used to track dynamic relocations for local symbols. */ |
4170 | struct ppc_dyn_relocs | |
4171 | { | |
4172 | struct ppc_dyn_relocs *next; | |
4173 | ||
4174 | /* The input section of the reloc. */ | |
4175 | asection *sec; | |
4176 | ||
4177 | /* Total number of relocs copied for the input section. */ | |
4178 | unsigned int count : 31; | |
4179 | ||
4180 | /* Whether this entry is for STT_GNU_IFUNC symbols. */ | |
4181 | unsigned int ifunc : 1; | |
4182 | }; | |
4183 | ||
65f38f15 AM |
4184 | struct ppc_link_hash_entry |
4185 | { | |
4186 | struct elf_link_hash_entry elf; | |
4187 | ||
2cdcc330 AM |
4188 | union |
4189 | { | |
b3fac117 AM |
4190 | /* A pointer to the most recently used stub hash entry against this |
4191 | symbol. */ | |
4192 | struct ppc_stub_hash_entry *stub_cache; | |
4193 | ||
4194 | /* A pointer to the next symbol starting with a '.' */ | |
4195 | struct ppc_link_hash_entry *next_dot_sym; | |
4196 | } u; | |
721956f4 | 4197 | |
65f38f15 | 4198 | /* Track dynamic relocs copied for this symbol. */ |
6061a67d | 4199 | struct elf_dyn_relocs *dyn_relocs; |
e86ce104 | 4200 | |
721956f4 | 4201 | /* Link between function code and descriptor symbols. */ |
34814b9f | 4202 | struct ppc_link_hash_entry *oh; |
721956f4 | 4203 | |
e86ce104 AM |
4204 | /* Flag function code and descriptor symbols. */ |
4205 | unsigned int is_func:1; | |
4206 | unsigned int is_func_descriptor:1; | |
908b32fc | 4207 | unsigned int fake:1; |
411e1bfb | 4208 | |
c5614fa4 AM |
4209 | /* Whether global opd/toc sym has been adjusted or not. |
4210 | After ppc64_elf_edit_opd/ppc64_elf_edit_toc has run, this flag | |
4211 | should be set for all globals defined in any opd/toc section. */ | |
754021d0 AM |
4212 | unsigned int adjust_done:1; |
4213 | ||
a4b6fadd AM |
4214 | /* Set if this is an out-of-line register save/restore function, |
4215 | with non-standard calling convention. */ | |
4216 | unsigned int save_res:1; | |
4217 | ||
8b5f1ed8 AM |
4218 | /* Set if a duplicate symbol with non-zero localentry is detected, |
4219 | even when the duplicate symbol does not provide a definition. */ | |
4220 | unsigned int non_zero_localentry:1; | |
4221 | ||
411e1bfb | 4222 | /* Contexts in which symbol is used in the GOT (or TOC). |
37da22e5 AM |
4223 | Bits are or'd into the mask as the corresponding relocs are |
4224 | encountered during check_relocs, with TLS_TLS being set when any | |
4225 | of the other TLS bits are set. tls_optimize clears bits when | |
4226 | optimizing to indicate the corresponding GOT entry type is not | |
4227 | needed. If set, TLS_TLS is never cleared. tls_optimize may also | |
4228 | set TLS_TPRELGD when a GD reloc turns into a TPREL one. We use a | |
4229 | separate flag rather than setting TPREL just for convenience in | |
4230 | distinguishing the two cases. | |
4231 | These flags are also kept for local symbols. */ | |
4232 | #define TLS_TLS 1 /* Any TLS reloc. */ | |
4233 | #define TLS_GD 2 /* GD reloc. */ | |
4234 | #define TLS_LD 4 /* LD reloc. */ | |
4235 | #define TLS_TPREL 8 /* TPREL reloc, => IE. */ | |
4236 | #define TLS_DTPREL 16 /* DTPREL reloc, => LD. */ | |
4237 | #define TLS_MARK 32 /* __tls_get_addr call marked. */ | |
e7b938ca | 4238 | #define TLS_TPRELGD 64 /* TPREL reloc resulting from GD->IE. */ |
37da22e5 | 4239 | #define TLS_EXPLICIT 128 /* Marks TOC section TLS relocs. */ |
f961d9dd | 4240 | unsigned char tls_mask; |
37da22e5 AM |
4241 | |
4242 | /* The above field is also used to mark function symbols. In which | |
4243 | case TLS_TLS will be 0. */ | |
4244 | #define PLT_IFUNC 2 /* STT_GNU_IFUNC. */ | |
2d7ad24e | 4245 | #define PLT_KEEP 4 /* inline plt call requires plt entry. */ |
37da22e5 | 4246 | #define NON_GOT 256 /* local symbol plt, not stored. */ |
65f38f15 AM |
4247 | }; |
4248 | ||
4249 | /* ppc64 ELF linker hash table. */ | |
4250 | ||
4251 | struct ppc_link_hash_table | |
4252 | { | |
4253 | struct elf_link_hash_table elf; | |
4254 | ||
721956f4 AM |
4255 | /* The stub hash table. */ |
4256 | struct bfd_hash_table stub_hash_table; | |
4257 | ||
4258 | /* Another hash table for plt_branch stubs. */ | |
4259 | struct bfd_hash_table branch_hash_table; | |
4260 | ||
3b421ab3 AM |
4261 | /* Hash table for function prologue tocsave. */ |
4262 | htab_t tocsave_htab; | |
4263 | ||
e7d1c40c AM |
4264 | /* Various options and other info passed from the linker. */ |
4265 | struct ppc64_elf_params *params; | |
721956f4 | 4266 | |
6f20ed8a AM |
4267 | /* The size of sec_info below. */ |
4268 | unsigned int sec_info_arr_size; | |
4269 | ||
4270 | /* Per-section array of extra section info. Done this way rather | |
4271 | than as part of ppc64_elf_section_data so we have the info for | |
4272 | non-ppc64 sections. */ | |
4273 | struct | |
4274 | { | |
4275 | /* Along with elf_gp, specifies the TOC pointer used by this section. */ | |
ad8e1ba5 | 4276 | bfd_vma toc_off; |
6f20ed8a AM |
4277 | |
4278 | union | |
4279 | { | |
4280 | /* The section group that this section belongs to. */ | |
4281 | struct map_stub *group; | |
4282 | /* A temp section list pointer. */ | |
4283 | asection *list; | |
4284 | } u; | |
4285 | } *sec_info; | |
721956f4 | 4286 | |
a4b6fadd AM |
4287 | /* Linked list of groups. */ |
4288 | struct map_stub *group; | |
4289 | ||
ad8e1ba5 AM |
4290 | /* Temp used when calculating TOC pointers. */ |
4291 | bfd_vma toc_curr; | |
bf102f86 AM |
4292 | bfd *toc_bfd; |
4293 | asection *toc_first_sec; | |
ad8e1ba5 | 4294 | |
b3fac117 AM |
4295 | /* Used when adding symbols. */ |
4296 | struct ppc_link_hash_entry *dot_syms; | |
4297 | ||
33e44f2e | 4298 | /* Shortcuts to get to dynamic linker sections. */ |
4ce794b7 | 4299 | asection *glink; |
9e390558 | 4300 | asection *global_entry; |
82bd7b59 | 4301 | asection *sfpr; |
2d7ad24e AM |
4302 | asection *pltlocal; |
4303 | asection *relpltlocal; | |
4ce794b7 AM |
4304 | asection *brlt; |
4305 | asection *relbrlt; | |
58d180e8 | 4306 | asection *glink_eh_frame; |
ec338859 | 4307 | |
8387904d AM |
4308 | /* Shortcut to .__tls_get_addr and __tls_get_addr. */ |
4309 | struct ppc_link_hash_entry *tls_get_addr; | |
4310 | struct ppc_link_hash_entry *tls_get_addr_fd; | |
411e1bfb | 4311 | |
927be08e AM |
4312 | /* The size of reliplt used by got entry relocs. */ |
4313 | bfd_size_type got_reli_size; | |
4314 | ||
9b5ecbd0 | 4315 | /* Statistics. */ |
7341d5e2 | 4316 | unsigned long stub_count[ppc_stub_global_entry]; |
9b5ecbd0 | 4317 | |
ee75fd95 AM |
4318 | /* Number of stubs against global syms. */ |
4319 | unsigned long stub_globals; | |
4320 | ||
ee67d69a AM |
4321 | /* Set if we're linking code with function descriptors. */ |
4322 | unsigned int opd_abi:1; | |
4323 | ||
4c52953f | 4324 | /* Support for multiple toc sections. */ |
33c0ec9d | 4325 | unsigned int do_multi_toc:1; |
4c52953f | 4326 | unsigned int multi_toc_needed:1; |
927be08e | 4327 | unsigned int second_toc_pass:1; |
67f0cbdb | 4328 | unsigned int do_toc_opt:1; |
4c52953f | 4329 | |
9a23f96e AM |
4330 | /* Set if tls optimization is enabled. */ |
4331 | unsigned int do_tls_opt:1; | |
4332 | ||
3e04d765 AM |
4333 | /* Set if inline plt calls should be converted to direct calls. */ |
4334 | unsigned int can_convert_all_inline_plt:1; | |
4335 | ||
5d1634d7 | 4336 | /* Set on error. */ |
99877b66 | 4337 | unsigned int stub_error:1; |
721956f4 | 4338 | |
8c5b4e52 AM |
4339 | /* Whether func_desc_adjust needs to be run over symbols. */ |
4340 | unsigned int need_func_desc_adj:1; | |
721956f4 | 4341 | |
82e66161 AM |
4342 | /* Whether there exist local gnu indirect function resolvers, |
4343 | referenced by dynamic relocations. */ | |
4344 | unsigned int local_ifunc_resolver:1; | |
4345 | unsigned int maybe_local_ifunc_resolver:1; | |
4346 | ||
f378ab09 AM |
4347 | /* Whether plt calls for ELFv2 localentry:0 funcs have been optimized. */ |
4348 | unsigned int has_plt_localentry0:1; | |
4349 | ||
721956f4 AM |
4350 | /* Incremented every time we size stubs. */ |
4351 | unsigned int stub_iteration; | |
5d1634d7 | 4352 | |
87d72d41 AM |
4353 | /* Small local sym cache. */ |
4354 | struct sym_cache sym_cache; | |
65f38f15 AM |
4355 | }; |
4356 | ||
4c52953f AM |
4357 | /* Rename some of the generic section flags to better document how they |
4358 | are used here. */ | |
b0dddeec AM |
4359 | |
4360 | /* Nonzero if this section has TLS related relocations. */ | |
4361 | #define has_tls_reloc sec_flg0 | |
4362 | ||
23cedd1d | 4363 | /* Nonzero if this section has an old-style call to __tls_get_addr. */ |
b0dddeec AM |
4364 | #define has_tls_get_addr_call sec_flg1 |
4365 | ||
4366 | /* Nonzero if this section has any toc or got relocs. */ | |
4367 | #define has_toc_reloc sec_flg2 | |
4368 | ||
4369 | /* Nonzero if this section has a call to another section that uses | |
4370 | the toc or got. */ | |
d77c8a4b | 4371 | #define makes_toc_func_call sec_flg3 |
b0dddeec AM |
4372 | |
4373 | /* Recursion protection when determining above flag. */ | |
d77c8a4b | 4374 | #define call_check_in_progress sec_flg4 |
70cc837d | 4375 | #define call_check_done sec_flg5 |
4c52953f | 4376 | |
65f38f15 AM |
4377 | /* Get the ppc64 ELF linker hash table from a link_info structure. */ |
4378 | ||
4379 | #define ppc_hash_table(p) \ | |
4dfe6ac6 NC |
4380 | (elf_hash_table_id ((struct elf_link_hash_table *) ((p)->hash)) \ |
4381 | == PPC64_ELF_DATA ? ((struct ppc_link_hash_table *) ((p)->hash)) : NULL) | |
65f38f15 | 4382 | |
721956f4 AM |
4383 | #define ppc_stub_hash_lookup(table, string, create, copy) \ |
4384 | ((struct ppc_stub_hash_entry *) \ | |
4385 | bfd_hash_lookup ((table), (string), (create), (copy))) | |
4386 | ||
4387 | #define ppc_branch_hash_lookup(table, string, create, copy) \ | |
4388 | ((struct ppc_branch_hash_entry *) \ | |
4389 | bfd_hash_lookup ((table), (string), (create), (copy))) | |
4390 | ||
4391 | /* Create an entry in the stub hash table. */ | |
4392 | ||
4393 | static struct bfd_hash_entry * | |
4ce794b7 AM |
4394 | stub_hash_newfunc (struct bfd_hash_entry *entry, |
4395 | struct bfd_hash_table *table, | |
4396 | const char *string) | |
721956f4 AM |
4397 | { |
4398 | /* Allocate the structure if it has not already been allocated by a | |
4399 | subclass. */ | |
4400 | if (entry == NULL) | |
4401 | { | |
4402 | entry = bfd_hash_allocate (table, sizeof (struct ppc_stub_hash_entry)); | |
4403 | if (entry == NULL) | |
4404 | return entry; | |
4405 | } | |
4406 | ||
4407 | /* Call the allocation method of the superclass. */ | |
4408 | entry = bfd_hash_newfunc (entry, table, string); | |
4409 | if (entry != NULL) | |
4410 | { | |
4411 | struct ppc_stub_hash_entry *eh; | |
4412 | ||
4413 | /* Initialize the local fields. */ | |
4414 | eh = (struct ppc_stub_hash_entry *) entry; | |
ad8e1ba5 | 4415 | eh->stub_type = ppc_stub_none; |
6f20ed8a | 4416 | eh->group = NULL; |
721956f4 AM |
4417 | eh->stub_offset = 0; |
4418 | eh->target_value = 0; | |
4419 | eh->target_section = NULL; | |
721956f4 | 4420 | eh->h = NULL; |
6911b7dc | 4421 | eh->plt_ent = NULL; |
6911b7dc | 4422 | eh->other = 0; |
721956f4 AM |
4423 | } |
4424 | ||
4425 | return entry; | |
4426 | } | |
4427 | ||
4428 | /* Create an entry in the branch hash table. */ | |
4429 | ||
4430 | static struct bfd_hash_entry * | |
4ce794b7 AM |
4431 | branch_hash_newfunc (struct bfd_hash_entry *entry, |
4432 | struct bfd_hash_table *table, | |
4433 | const char *string) | |
721956f4 AM |
4434 | { |
4435 | /* Allocate the structure if it has not already been allocated by a | |
4436 | subclass. */ | |
4437 | if (entry == NULL) | |
4438 | { | |
4439 | entry = bfd_hash_allocate (table, sizeof (struct ppc_branch_hash_entry)); | |
4440 | if (entry == NULL) | |
4441 | return entry; | |
4442 | } | |
4443 | ||
4444 | /* Call the allocation method of the superclass. */ | |
4445 | entry = bfd_hash_newfunc (entry, table, string); | |
4446 | if (entry != NULL) | |
4447 | { | |
4448 | struct ppc_branch_hash_entry *eh; | |
4449 | ||
4450 | /* Initialize the local fields. */ | |
4451 | eh = (struct ppc_branch_hash_entry *) entry; | |
4452 | eh->offset = 0; | |
4453 | eh->iter = 0; | |
4454 | } | |
4455 | ||
4456 | return entry; | |
4457 | } | |
4458 | ||
65f38f15 AM |
4459 | /* Create an entry in a ppc64 ELF linker hash table. */ |
4460 | ||
4461 | static struct bfd_hash_entry * | |
4ce794b7 AM |
4462 | link_hash_newfunc (struct bfd_hash_entry *entry, |
4463 | struct bfd_hash_table *table, | |
4464 | const char *string) | |
65f38f15 AM |
4465 | { |
4466 | /* Allocate the structure if it has not already been allocated by a | |
4467 | subclass. */ | |
4468 | if (entry == NULL) | |
4469 | { | |
4470 | entry = bfd_hash_allocate (table, sizeof (struct ppc_link_hash_entry)); | |
4471 | if (entry == NULL) | |
4472 | return entry; | |
4473 | } | |
4474 | ||
4475 | /* Call the allocation method of the superclass. */ | |
4476 | entry = _bfd_elf_link_hash_newfunc (entry, table, string); | |
4477 | if (entry != NULL) | |
4478 | { | |
4479 | struct ppc_link_hash_entry *eh = (struct ppc_link_hash_entry *) entry; | |
4480 | ||
b3fac117 | 4481 | memset (&eh->u.stub_cache, 0, |
908b32fc | 4482 | (sizeof (struct ppc_link_hash_entry) |
b3fac117 AM |
4483 | - offsetof (struct ppc_link_hash_entry, u.stub_cache))); |
4484 | ||
4485 | /* When making function calls, old ABI code references function entry | |
4486 | points (dot symbols), while new ABI code references the function | |
4487 | descriptor symbol. We need to make any combination of reference and | |
4488 | definition work together, without breaking archive linking. | |
4489 | ||
4490 | For a defined function "foo" and an undefined call to "bar": | |
4491 | An old object defines "foo" and ".foo", references ".bar" (possibly | |
4492 | "bar" too). | |
4493 | A new object defines "foo" and references "bar". | |
4494 | ||
4495 | A new object thus has no problem with its undefined symbols being | |
4496 | satisfied by definitions in an old object. On the other hand, the | |
4497 | old object won't have ".bar" satisfied by a new object. | |
4498 | ||
4499 | Keep a list of newly added dot-symbols. */ | |
4500 | ||
4501 | if (string[0] == '.') | |
4502 | { | |
4503 | struct ppc_link_hash_table *htab; | |
4504 | ||
4505 | htab = (struct ppc_link_hash_table *) table; | |
4506 | eh->u.next_dot_sym = htab->dot_syms; | |
4507 | htab->dot_syms = eh; | |
4508 | } | |
65f38f15 AM |
4509 | } |
4510 | ||
4511 | return entry; | |
4512 | } | |
4513 | ||
2cdcc330 AM |
4514 | struct tocsave_entry |
4515 | { | |
3b421ab3 AM |
4516 | asection *sec; |
4517 | bfd_vma offset; | |
4518 | }; | |
4519 | ||
4520 | static hashval_t | |
4521 | tocsave_htab_hash (const void *p) | |
4522 | { | |
4523 | const struct tocsave_entry *e = (const struct tocsave_entry *) p; | |
4aef7643 | 4524 | return ((bfd_vma) (intptr_t) e->sec ^ e->offset) >> 3; |
3b421ab3 AM |
4525 | } |
4526 | ||
4527 | static int | |
4528 | tocsave_htab_eq (const void *p1, const void *p2) | |
4529 | { | |
4530 | const struct tocsave_entry *e1 = (const struct tocsave_entry *) p1; | |
4531 | const struct tocsave_entry *e2 = (const struct tocsave_entry *) p2; | |
4532 | return e1->sec == e2->sec && e1->offset == e2->offset; | |
4533 | } | |
4534 | ||
68faa637 AM |
4535 | /* Destroy a ppc64 ELF linker hash table. */ |
4536 | ||
4537 | static void | |
d495ab0d | 4538 | ppc64_elf_link_hash_table_free (bfd *obfd) |
68faa637 | 4539 | { |
d495ab0d | 4540 | struct ppc_link_hash_table *htab; |
68faa637 | 4541 | |
d495ab0d | 4542 | htab = (struct ppc_link_hash_table *) obfd->link.hash; |
68faa637 AM |
4543 | if (htab->tocsave_htab) |
4544 | htab_delete (htab->tocsave_htab); | |
d495ab0d AM |
4545 | bfd_hash_table_free (&htab->branch_hash_table); |
4546 | bfd_hash_table_free (&htab->stub_hash_table); | |
4547 | _bfd_elf_link_hash_table_free (obfd); | |
68faa637 AM |
4548 | } |
4549 | ||
65f38f15 AM |
4550 | /* Create a ppc64 ELF linker hash table. */ |
4551 | ||
4552 | static struct bfd_link_hash_table * | |
4ce794b7 | 4553 | ppc64_elf_link_hash_table_create (bfd *abfd) |
65f38f15 AM |
4554 | { |
4555 | struct ppc_link_hash_table *htab; | |
4556 | bfd_size_type amt = sizeof (struct ppc_link_hash_table); | |
4557 | ||
4ce794b7 | 4558 | htab = bfd_zmalloc (amt); |
65f38f15 AM |
4559 | if (htab == NULL) |
4560 | return NULL; | |
4561 | ||
66eb6687 | 4562 | if (!_bfd_elf_link_hash_table_init (&htab->elf, abfd, link_hash_newfunc, |
4dfe6ac6 NC |
4563 | sizeof (struct ppc_link_hash_entry), |
4564 | PPC64_ELF_DATA)) | |
65f38f15 | 4565 | { |
e2d34d7d | 4566 | free (htab); |
65f38f15 AM |
4567 | return NULL; |
4568 | } | |
4569 | ||
721956f4 | 4570 | /* Init the stub hash table too. */ |
66eb6687 AM |
4571 | if (!bfd_hash_table_init (&htab->stub_hash_table, stub_hash_newfunc, |
4572 | sizeof (struct ppc_stub_hash_entry))) | |
2915c55b | 4573 | { |
d495ab0d | 4574 | _bfd_elf_link_hash_table_free (abfd); |
2915c55b JK |
4575 | return NULL; |
4576 | } | |
721956f4 AM |
4577 | |
4578 | /* And the branch hash table. */ | |
66eb6687 AM |
4579 | if (!bfd_hash_table_init (&htab->branch_hash_table, branch_hash_newfunc, |
4580 | sizeof (struct ppc_branch_hash_entry))) | |
2915c55b JK |
4581 | { |
4582 | bfd_hash_table_free (&htab->stub_hash_table); | |
d495ab0d | 4583 | _bfd_elf_link_hash_table_free (abfd); |
2915c55b JK |
4584 | return NULL; |
4585 | } | |
721956f4 | 4586 | |
3b421ab3 AM |
4587 | htab->tocsave_htab = htab_try_create (1024, |
4588 | tocsave_htab_hash, | |
4589 | tocsave_htab_eq, | |
4590 | NULL); | |
4591 | if (htab->tocsave_htab == NULL) | |
2915c55b | 4592 | { |
d495ab0d | 4593 | ppc64_elf_link_hash_table_free (abfd); |
2915c55b JK |
4594 | return NULL; |
4595 | } | |
d495ab0d | 4596 | htab->elf.root.hash_table_free = ppc64_elf_link_hash_table_free; |
3b421ab3 | 4597 | |
3254fd24 AM |
4598 | /* Initializing two fields of the union is just cosmetic. We really |
4599 | only care about glist, but when compiled on a 32-bit host the | |
4600 | bfd_vma fields are larger. Setting the bfd_vma to zero makes | |
4601 | debugger inspection of these fields look nicer. */ | |
a6aa5195 AM |
4602 | htab->elf.init_got_refcount.refcount = 0; |
4603 | htab->elf.init_got_refcount.glist = NULL; | |
4604 | htab->elf.init_plt_refcount.refcount = 0; | |
4605 | htab->elf.init_plt_refcount.glist = NULL; | |
4606 | htab->elf.init_got_offset.offset = 0; | |
4607 | htab->elf.init_got_offset.glist = NULL; | |
4608 | htab->elf.init_plt_offset.offset = 0; | |
4609 | htab->elf.init_plt_offset.glist = NULL; | |
3254fd24 | 4610 | |
65f38f15 AM |
4611 | return &htab->elf.root; |
4612 | } | |
4613 | ||
bfeb4a28 AM |
4614 | /* Create sections for linker generated code. */ |
4615 | ||
4616 | static bfd_boolean | |
4617 | create_linkage_sections (bfd *dynobj, struct bfd_link_info *info) | |
4618 | { | |
4619 | struct ppc_link_hash_table *htab; | |
4620 | flagword flags; | |
4621 | ||
4622 | htab = ppc_hash_table (info); | |
4623 | ||
bfeb4a28 AM |
4624 | flags = (SEC_ALLOC | SEC_LOAD | SEC_CODE | SEC_READONLY |
4625 | | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED); | |
b32547cd AM |
4626 | if (htab->params->save_restore_funcs) |
4627 | { | |
4628 | /* Create .sfpr for code to save and restore fp regs. */ | |
4629 | htab->sfpr = bfd_make_section_anyway_with_flags (dynobj, ".sfpr", | |
4630 | flags); | |
4631 | if (htab->sfpr == NULL | |
2cdcc330 | 4632 | || !bfd_set_section_alignment (dynobj, htab->sfpr, 2)) |
b32547cd AM |
4633 | return FALSE; |
4634 | } | |
4635 | ||
4636 | if (bfd_link_relocatable (info)) | |
4637 | return TRUE; | |
bfeb4a28 AM |
4638 | |
4639 | /* Create .glink for lazy dynamic linking support. */ | |
4640 | htab->glink = bfd_make_section_anyway_with_flags (dynobj, ".glink", | |
4641 | flags); | |
4642 | if (htab->glink == NULL | |
2cdcc330 | 4643 | || !bfd_set_section_alignment (dynobj, htab->glink, 3)) |
bfeb4a28 AM |
4644 | return FALSE; |
4645 | ||
9e390558 AM |
4646 | /* The part of .glink used by global entry stubs, separate so that |
4647 | it can be aligned appropriately without affecting htab->glink. */ | |
4648 | htab->global_entry = bfd_make_section_anyway_with_flags (dynobj, ".glink", | |
4649 | flags); | |
4650 | if (htab->global_entry == NULL | |
2cdcc330 | 4651 | || !bfd_set_section_alignment (dynobj, htab->global_entry, 2)) |
9e390558 AM |
4652 | return FALSE; |
4653 | ||
bfeb4a28 AM |
4654 | if (!info->no_ld_generated_unwind_info) |
4655 | { | |
4656 | flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_HAS_CONTENTS | |
4657 | | SEC_IN_MEMORY | SEC_LINKER_CREATED); | |
4658 | htab->glink_eh_frame = bfd_make_section_anyway_with_flags (dynobj, | |
4659 | ".eh_frame", | |
4660 | flags); | |
4661 | if (htab->glink_eh_frame == NULL | |
4662 | || !bfd_set_section_alignment (dynobj, htab->glink_eh_frame, 2)) | |
4663 | return FALSE; | |
4664 | } | |
4665 | ||
4666 | flags = SEC_ALLOC | SEC_LINKER_CREATED; | |
33e44f2e AM |
4667 | htab->elf.iplt = bfd_make_section_anyway_with_flags (dynobj, ".iplt", flags); |
4668 | if (htab->elf.iplt == NULL | |
2cdcc330 | 4669 | || !bfd_set_section_alignment (dynobj, htab->elf.iplt, 3)) |
bfeb4a28 AM |
4670 | return FALSE; |
4671 | ||
4672 | flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY | |
4673 | | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED); | |
33e44f2e AM |
4674 | htab->elf.irelplt |
4675 | = bfd_make_section_anyway_with_flags (dynobj, ".rela.iplt", flags); | |
4676 | if (htab->elf.irelplt == NULL | |
2cdcc330 | 4677 | || !bfd_set_section_alignment (dynobj, htab->elf.irelplt, 3)) |
bfeb4a28 AM |
4678 | return FALSE; |
4679 | ||
4680 | /* Create branch lookup table for plt_branch stubs. */ | |
4681 | flags = (SEC_ALLOC | SEC_LOAD | |
4682 | | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED); | |
4683 | htab->brlt = bfd_make_section_anyway_with_flags (dynobj, ".branch_lt", | |
4684 | flags); | |
4685 | if (htab->brlt == NULL | |
2cdcc330 | 4686 | || !bfd_set_section_alignment (dynobj, htab->brlt, 3)) |
bfeb4a28 AM |
4687 | return FALSE; |
4688 | ||
2d7ad24e AM |
4689 | /* Local plt entries, put in .branch_lt but a separate section for |
4690 | convenience. */ | |
4691 | htab->pltlocal = bfd_make_section_anyway_with_flags (dynobj, ".branch_lt", | |
4692 | flags); | |
4693 | if (htab->pltlocal == NULL | |
2cdcc330 | 4694 | || !bfd_set_section_alignment (dynobj, htab->pltlocal, 3)) |
2d7ad24e AM |
4695 | return FALSE; |
4696 | ||
0e1862bb | 4697 | if (!bfd_link_pic (info)) |
bfeb4a28 AM |
4698 | return TRUE; |
4699 | ||
4700 | flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY | |
4701 | | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED); | |
2d7ad24e AM |
4702 | htab->relbrlt |
4703 | = bfd_make_section_anyway_with_flags (dynobj, ".rela.branch_lt", flags); | |
bfeb4a28 | 4704 | if (htab->relbrlt == NULL |
2cdcc330 | 4705 | || !bfd_set_section_alignment (dynobj, htab->relbrlt, 3)) |
bfeb4a28 AM |
4706 | return FALSE; |
4707 | ||
2d7ad24e AM |
4708 | htab->relpltlocal |
4709 | = bfd_make_section_anyway_with_flags (dynobj, ".rela.branch_lt", flags); | |
4710 | if (htab->relpltlocal == NULL | |
2cdcc330 | 4711 | || !bfd_set_section_alignment (dynobj, htab->relpltlocal, 3)) |
2d7ad24e AM |
4712 | return FALSE; |
4713 | ||
bfeb4a28 AM |
4714 | return TRUE; |
4715 | } | |
4716 | ||
e717da7e AM |
4717 | /* Satisfy the ELF linker by filling in some fields in our fake bfd. */ |
4718 | ||
bfeb4a28 | 4719 | bfd_boolean |
e7d1c40c AM |
4720 | ppc64_elf_init_stub_bfd (struct bfd_link_info *info, |
4721 | struct ppc64_elf_params *params) | |
e717da7e AM |
4722 | { |
4723 | struct ppc_link_hash_table *htab; | |
4724 | ||
e7d1c40c | 4725 | elf_elfheader (params->stub_bfd)->e_ident[EI_CLASS] = ELFCLASS64; |
e717da7e AM |
4726 | |
4727 | /* Always hook our dynamic sections into the first bfd, which is the | |
4728 | linker created stub bfd. This ensures that the GOT header is at | |
4729 | the start of the output TOC section. */ | |
4730 | htab = ppc_hash_table (info); | |
e7d1c40c AM |
4731 | htab->elf.dynobj = params->stub_bfd; |
4732 | htab->params = params; | |
bfeb4a28 | 4733 | |
bfeb4a28 | 4734 | return create_linkage_sections (htab->elf.dynobj, info); |
e717da7e AM |
4735 | } |
4736 | ||
721956f4 AM |
4737 | /* Build a name for an entry in the stub hash table. */ |
4738 | ||
4739 | static char * | |
4ce794b7 AM |
4740 | ppc_stub_name (const asection *input_section, |
4741 | const asection *sym_sec, | |
4742 | const struct ppc_link_hash_entry *h, | |
4743 | const Elf_Internal_Rela *rel) | |
721956f4 AM |
4744 | { |
4745 | char *stub_name; | |
bcaa2f82 | 4746 | ssize_t len; |
721956f4 AM |
4747 | |
4748 | /* rel->r_addend is actually 64 bit, but who uses more than +/- 2^31 | |
4749 | offsets from a sym as a branch target? In fact, we could | |
4750 | probably assume the addend is always zero. */ | |
4751 | BFD_ASSERT (((int) rel->r_addend & 0xffffffff) == rel->r_addend); | |
4752 | ||
4753 | if (h) | |
4754 | { | |
4755 | len = 8 + 1 + strlen (h->elf.root.root.string) + 1 + 8 + 1; | |
4756 | stub_name = bfd_malloc (len); | |
46de2a7c AM |
4757 | if (stub_name == NULL) |
4758 | return stub_name; | |
4759 | ||
bcaa2f82 AM |
4760 | len = sprintf (stub_name, "%08x.%s+%x", |
4761 | input_section->id & 0xffffffff, | |
4762 | h->elf.root.root.string, | |
4763 | (int) rel->r_addend & 0xffffffff); | |
721956f4 AM |
4764 | } |
4765 | else | |
4766 | { | |
ad8e1ba5 | 4767 | len = 8 + 1 + 8 + 1 + 8 + 1 + 8 + 1; |
721956f4 | 4768 | stub_name = bfd_malloc (len); |
46de2a7c AM |
4769 | if (stub_name == NULL) |
4770 | return stub_name; | |
4771 | ||
bcaa2f82 AM |
4772 | len = sprintf (stub_name, "%08x.%x:%x+%x", |
4773 | input_section->id & 0xffffffff, | |
4774 | sym_sec->id & 0xffffffff, | |
4775 | (int) ELF64_R_SYM (rel->r_info) & 0xffffffff, | |
4776 | (int) rel->r_addend & 0xffffffff); | |
721956f4 | 4777 | } |
bcaa2f82 | 4778 | if (len > 2 && stub_name[len - 2] == '+' && stub_name[len - 1] == '0') |
ee75fd95 | 4779 | stub_name[len - 2] = 0; |
721956f4 AM |
4780 | return stub_name; |
4781 | } | |
4782 | ||
4783 | /* Look up an entry in the stub hash. Stub entries are cached because | |
4784 | creating the stub name takes a bit of time. */ | |
4785 | ||
4786 | static struct ppc_stub_hash_entry * | |
4ce794b7 AM |
4787 | ppc_get_stub_entry (const asection *input_section, |
4788 | const asection *sym_sec, | |
039b3fef | 4789 | struct ppc_link_hash_entry *h, |
4ce794b7 AM |
4790 | const Elf_Internal_Rela *rel, |
4791 | struct ppc_link_hash_table *htab) | |
721956f4 AM |
4792 | { |
4793 | struct ppc_stub_hash_entry *stub_entry; | |
6f20ed8a | 4794 | struct map_stub *group; |
721956f4 AM |
4795 | |
4796 | /* If this input section is part of a group of sections sharing one | |
4797 | stub section, then use the id of the first section in the group. | |
4798 | Stub names need to include a section id, as there may well be | |
4799 | more than one stub used to reach say, printf, and we need to | |
4800 | distinguish between them. */ | |
6f20ed8a | 4801 | group = htab->sec_info[input_section->id].u.group; |
89d77b8a AM |
4802 | if (group == NULL) |
4803 | return NULL; | |
721956f4 | 4804 | |
b3fac117 AM |
4805 | if (h != NULL && h->u.stub_cache != NULL |
4806 | && h->u.stub_cache->h == h | |
6f20ed8a | 4807 | && h->u.stub_cache->group == group) |
721956f4 | 4808 | { |
b3fac117 | 4809 | stub_entry = h->u.stub_cache; |
721956f4 AM |
4810 | } |
4811 | else | |
4812 | { | |
4813 | char *stub_name; | |
4814 | ||
6f20ed8a | 4815 | stub_name = ppc_stub_name (group->link_sec, sym_sec, h, rel); |
721956f4 AM |
4816 | if (stub_name == NULL) |
4817 | return NULL; | |
4818 | ||
4819 | stub_entry = ppc_stub_hash_lookup (&htab->stub_hash_table, | |
b34976b6 | 4820 | stub_name, FALSE, FALSE); |
721956f4 | 4821 | if (h != NULL) |
b3fac117 | 4822 | h->u.stub_cache = stub_entry; |
721956f4 AM |
4823 | |
4824 | free (stub_name); | |
4825 | } | |
4826 | ||
4827 | return stub_entry; | |
4828 | } | |
4829 | ||
4830 | /* Add a new stub entry to the stub hash. Not all fields of the new | |
4831 | stub entry are initialised. */ | |
4832 | ||
4833 | static struct ppc_stub_hash_entry * | |
4ce794b7 AM |
4834 | ppc_add_stub (const char *stub_name, |
4835 | asection *section, | |
25f53a85 | 4836 | struct bfd_link_info *info) |
721956f4 | 4837 | { |
25f53a85 | 4838 | struct ppc_link_hash_table *htab = ppc_hash_table (info); |
6f20ed8a | 4839 | struct map_stub *group; |
721956f4 AM |
4840 | asection *link_sec; |
4841 | asection *stub_sec; | |
4842 | struct ppc_stub_hash_entry *stub_entry; | |
4843 | ||
6f20ed8a AM |
4844 | group = htab->sec_info[section->id].u.group; |
4845 | link_sec = group->link_sec; | |
4846 | stub_sec = group->stub_sec; | |
721956f4 AM |
4847 | if (stub_sec == NULL) |
4848 | { | |
6f20ed8a AM |
4849 | size_t namelen; |
4850 | bfd_size_type len; | |
4851 | char *s_name; | |
721956f4 | 4852 | |
6f20ed8a AM |
4853 | namelen = strlen (link_sec->name); |
4854 | len = namelen + sizeof (STUB_SUFFIX); | |
4855 | s_name = bfd_alloc (htab->params->stub_bfd, len); | |
4856 | if (s_name == NULL) | |
4857 | return NULL; | |
721956f4 | 4858 | |
6f20ed8a AM |
4859 | memcpy (s_name, link_sec->name, namelen); |
4860 | memcpy (s_name + namelen, STUB_SUFFIX, sizeof (STUB_SUFFIX)); | |
4861 | stub_sec = (*htab->params->add_stub_section) (s_name, link_sec); | |
4862 | if (stub_sec == NULL) | |
4863 | return NULL; | |
4864 | group->stub_sec = stub_sec; | |
721956f4 AM |
4865 | } |
4866 | ||
4867 | /* Enter this entry into the linker stub hash table. */ | |
4868 | stub_entry = ppc_stub_hash_lookup (&htab->stub_hash_table, stub_name, | |
b34976b6 | 4869 | TRUE, FALSE); |
721956f4 AM |
4870 | if (stub_entry == NULL) |
4871 | { | |
695344c0 | 4872 | /* xgettext:c-format */ |
cf97bcb0 AM |
4873 | _bfd_error_handler (_("%pB: cannot create stub entry %s"), |
4874 | section->owner, stub_name); | |
721956f4 AM |
4875 | return NULL; |
4876 | } | |
4877 | ||
6f20ed8a | 4878 | stub_entry->group = group; |
721956f4 | 4879 | stub_entry->stub_offset = 0; |
721956f4 AM |
4880 | return stub_entry; |
4881 | } | |
4882 | ||
e717da7e AM |
4883 | /* Create .got and .rela.got sections in ABFD, and .got in dynobj if |
4884 | not already done. */ | |
65f38f15 | 4885 | |
b34976b6 | 4886 | static bfd_boolean |
e717da7e | 4887 | create_got_section (bfd *abfd, struct bfd_link_info *info) |
65f38f15 | 4888 | { |
e717da7e AM |
4889 | asection *got, *relgot; |
4890 | flagword flags; | |
4891 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
65f38f15 | 4892 | |
0c8d6e5c | 4893 | if (!is_ppc64_elf (abfd)) |
0ffa91dd | 4894 | return FALSE; |
4dfe6ac6 NC |
4895 | if (htab == NULL) |
4896 | return FALSE; | |
0ffa91dd | 4897 | |
33e44f2e AM |
4898 | if (!htab->elf.sgot |
4899 | && !_bfd_elf_create_got_section (htab->elf.dynobj, info)) | |
4900 | return FALSE; | |
e717da7e AM |
4901 | |
4902 | flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY | |
4903 | | SEC_LINKER_CREATED); | |
4904 | ||
c456f082 | 4905 | got = bfd_make_section_anyway_with_flags (abfd, ".got", flags); |
e717da7e | 4906 | if (!got |
e717da7e AM |
4907 | || !bfd_set_section_alignment (abfd, got, 3)) |
4908 | return FALSE; | |
65f38f15 | 4909 | |
c456f082 AM |
4910 | relgot = bfd_make_section_anyway_with_flags (abfd, ".rela.got", |
4911 | flags | SEC_READONLY); | |
e717da7e | 4912 | if (!relgot |
2cdcc330 | 4913 | || !bfd_set_section_alignment (abfd, relgot, 3)) |
b34976b6 | 4914 | return FALSE; |
e717da7e AM |
4915 | |
4916 | ppc64_elf_tdata (abfd)->got = got; | |
4917 | ppc64_elf_tdata (abfd)->relgot = relgot; | |
b34976b6 | 4918 | return TRUE; |
65f38f15 | 4919 | } |
5bd4f169 | 4920 | |
b31867b6 AM |
4921 | /* Follow indirect and warning symbol links. */ |
4922 | ||
4923 | static inline struct bfd_link_hash_entry * | |
4924 | follow_link (struct bfd_link_hash_entry *h) | |
4925 | { | |
4926 | while (h->type == bfd_link_hash_indirect | |
4927 | || h->type == bfd_link_hash_warning) | |
4928 | h = h->u.i.link; | |
4929 | return h; | |
4930 | } | |
4931 | ||
4932 | static inline struct elf_link_hash_entry * | |
4933 | elf_follow_link (struct elf_link_hash_entry *h) | |
4934 | { | |
4935 | return (struct elf_link_hash_entry *) follow_link (&h->root); | |
4936 | } | |
4937 | ||
4938 | static inline struct ppc_link_hash_entry * | |
4939 | ppc_follow_link (struct ppc_link_hash_entry *h) | |
4940 | { | |
4941 | return (struct ppc_link_hash_entry *) follow_link (&h->elf.root); | |
4942 | } | |
4943 | ||
40d16e0b AM |
4944 | /* Merge PLT info on FROM with that on TO. */ |
4945 | ||
4946 | static void | |
4947 | move_plt_plist (struct ppc_link_hash_entry *from, | |
4948 | struct ppc_link_hash_entry *to) | |
4949 | { | |
4950 | if (from->elf.plt.plist != NULL) | |
4951 | { | |
4952 | if (to->elf.plt.plist != NULL) | |
4953 | { | |
4954 | struct plt_entry **entp; | |
4955 | struct plt_entry *ent; | |
4956 | ||
4957 | for (entp = &from->elf.plt.plist; (ent = *entp) != NULL; ) | |
4958 | { | |
4959 | struct plt_entry *dent; | |
4960 | ||
4961 | for (dent = to->elf.plt.plist; dent != NULL; dent = dent->next) | |
4962 | if (dent->addend == ent->addend) | |
4963 | { | |
4964 | dent->plt.refcount += ent->plt.refcount; | |
4965 | *entp = ent->next; | |
4966 | break; | |
4967 | } | |
4968 | if (dent == NULL) | |
4969 | entp = &ent->next; | |
4970 | } | |
4971 | *entp = to->elf.plt.plist; | |
4972 | } | |
4973 | ||
4974 | to->elf.plt.plist = from->elf.plt.plist; | |
4975 | from->elf.plt.plist = NULL; | |
4976 | } | |
4977 | } | |
4978 | ||
65f38f15 AM |
4979 | /* Copy the extra info we tack onto an elf_link_hash_entry. */ |
4980 | ||
4981 | static void | |
fcfa13d2 AM |
4982 | ppc64_elf_copy_indirect_symbol (struct bfd_link_info *info, |
4983 | struct elf_link_hash_entry *dir, | |
4984 | struct elf_link_hash_entry *ind) | |
65f38f15 AM |
4985 | { |
4986 | struct ppc_link_hash_entry *edir, *eind; | |
4987 | ||
4988 | edir = (struct ppc_link_hash_entry *) dir; | |
4989 | eind = (struct ppc_link_hash_entry *) ind; | |
4990 | ||
c79d6685 AM |
4991 | edir->is_func |= eind->is_func; |
4992 | edir->is_func_descriptor |= eind->is_func_descriptor; | |
4993 | edir->tls_mask |= eind->tls_mask; | |
4994 | if (eind->oh != NULL) | |
4995 | edir->oh = ppc_follow_link (eind->oh); | |
4996 | ||
474436e6 | 4997 | if (edir->elf.versioned != versioned_hidden) |
e81830c5 AM |
4998 | edir->elf.ref_dynamic |= eind->elf.ref_dynamic; |
4999 | edir->elf.ref_regular |= eind->elf.ref_regular; | |
5000 | edir->elf.ref_regular_nonweak |= eind->elf.ref_regular_nonweak; | |
4a7e5234 | 5001 | edir->elf.non_got_ref |= eind->elf.non_got_ref; |
e81830c5 AM |
5002 | edir->elf.needs_plt |= eind->elf.needs_plt; |
5003 | edir->elf.pointer_equality_needed |= eind->elf.pointer_equality_needed; | |
c79d6685 | 5004 | |
d311bc8b AM |
5005 | /* If we were called to copy over info for a weak sym, don't copy |
5006 | dyn_relocs, plt/got info, or dynindx. We used to copy dyn_relocs | |
5007 | in order to simplify readonly_dynrelocs and save a field in the | |
5008 | symbol hash entry, but that means dyn_relocs can't be used in any | |
5009 | tests about a specific symbol, or affect other symbol flags which | |
ab2477e1 | 5010 | are then tested. */ |
d311bc8b | 5011 | if (eind->elf.root.type != bfd_link_hash_indirect) |
ab2477e1 | 5012 | return; |
d311bc8b | 5013 | |
411e1bfb | 5014 | /* Copy over any dynamic relocs we may have on the indirect sym. */ |
bbd7ec4a | 5015 | if (eind->dyn_relocs != NULL) |
65f38f15 | 5016 | { |
bbd7ec4a AM |
5017 | if (edir->dyn_relocs != NULL) |
5018 | { | |
6061a67d AM |
5019 | struct elf_dyn_relocs **pp; |
5020 | struct elf_dyn_relocs *p; | |
bbd7ec4a | 5021 | |
fcfa13d2 | 5022 | /* Add reloc counts against the indirect sym to the direct sym |
bbd7ec4a AM |
5023 | list. Merge any entries against the same section. */ |
5024 | for (pp = &eind->dyn_relocs; (p = *pp) != NULL; ) | |
5025 | { | |
6061a67d | 5026 | struct elf_dyn_relocs *q; |
bbd7ec4a AM |
5027 | |
5028 | for (q = edir->dyn_relocs; q != NULL; q = q->next) | |
5029 | if (q->sec == p->sec) | |
5030 | { | |
5031 | q->pc_count += p->pc_count; | |
5032 | q->count += p->count; | |
5033 | *pp = p->next; | |
5034 | break; | |
5035 | } | |
5036 | if (q == NULL) | |
5037 | pp = &p->next; | |
5038 | } | |
5039 | *pp = edir->dyn_relocs; | |
5040 | } | |
5041 | ||
65f38f15 AM |
5042 | edir->dyn_relocs = eind->dyn_relocs; |
5043 | eind->dyn_relocs = NULL; | |
5044 | } | |
65f38f15 | 5045 | |
81848ca0 AM |
5046 | /* Copy over got entries that we may have already seen to the |
5047 | symbol which just became indirect. */ | |
411e1bfb AM |
5048 | if (eind->elf.got.glist != NULL) |
5049 | { | |
5050 | if (edir->elf.got.glist != NULL) | |
5051 | { | |
5052 | struct got_entry **entp; | |
5053 | struct got_entry *ent; | |
5054 | ||
5055 | for (entp = &eind->elf.got.glist; (ent = *entp) != NULL; ) | |
5056 | { | |
5057 | struct got_entry *dent; | |
5058 | ||
5059 | for (dent = edir->elf.got.glist; dent != NULL; dent = dent->next) | |
5060 | if (dent->addend == ent->addend | |
e717da7e | 5061 | && dent->owner == ent->owner |
411e1bfb AM |
5062 | && dent->tls_type == ent->tls_type) |
5063 | { | |
5064 | dent->got.refcount += ent->got.refcount; | |
5065 | *entp = ent->next; | |
5066 | break; | |
5067 | } | |
5068 | if (dent == NULL) | |
5069 | entp = &ent->next; | |
5070 | } | |
5071 | *entp = edir->elf.got.glist; | |
5072 | } | |
5073 | ||
5074 | edir->elf.got.glist = eind->elf.got.glist; | |
5075 | eind->elf.got.glist = NULL; | |
5076 | } | |
5077 | ||
5078 | /* And plt entries. */ | |
40d16e0b | 5079 | move_plt_plist (eind, edir); |
411e1bfb | 5080 | |
fcfa13d2 | 5081 | if (eind->elf.dynindx != -1) |
411e1bfb | 5082 | { |
fcfa13d2 AM |
5083 | if (edir->elf.dynindx != -1) |
5084 | _bfd_elf_strtab_delref (elf_hash_table (info)->dynstr, | |
5085 | edir->elf.dynstr_index); | |
411e1bfb AM |
5086 | edir->elf.dynindx = eind->elf.dynindx; |
5087 | edir->elf.dynstr_index = eind->elf.dynstr_index; | |
5088 | eind->elf.dynindx = -1; | |
5089 | eind->elf.dynstr_index = 0; | |
5090 | } | |
411e1bfb AM |
5091 | } |
5092 | ||
8387904d AM |
5093 | /* Find the function descriptor hash entry from the given function code |
5094 | hash entry FH. Link the entries via their OH fields. */ | |
5095 | ||
5096 | static struct ppc_link_hash_entry * | |
b31867b6 | 5097 | lookup_fdh (struct ppc_link_hash_entry *fh, struct ppc_link_hash_table *htab) |
8387904d AM |
5098 | { |
5099 | struct ppc_link_hash_entry *fdh = fh->oh; | |
5100 | ||
5101 | if (fdh == NULL) | |
5102 | { | |
5103 | const char *fd_name = fh->elf.root.root.string + 1; | |
5104 | ||
5105 | fdh = (struct ppc_link_hash_entry *) | |
5106 | elf_link_hash_lookup (&htab->elf, fd_name, FALSE, FALSE, FALSE); | |
b31867b6 AM |
5107 | if (fdh == NULL) |
5108 | return fdh; | |
5109 | ||
5110 | fdh->is_func_descriptor = 1; | |
5111 | fdh->oh = fh; | |
5112 | fh->is_func = 1; | |
5113 | fh->oh = fdh; | |
8387904d AM |
5114 | } |
5115 | ||
8c5b4e52 AM |
5116 | fdh = ppc_follow_link (fdh); |
5117 | fdh->is_func_descriptor = 1; | |
5118 | fdh->oh = fh; | |
5119 | return fdh; | |
8387904d AM |
5120 | } |
5121 | ||
8c5b4e52 | 5122 | /* Make a fake function descriptor sym for the undefined code sym FH. */ |
bb700d78 AM |
5123 | |
5124 | static struct ppc_link_hash_entry * | |
5125 | make_fdh (struct bfd_link_info *info, | |
908b32fc | 5126 | struct ppc_link_hash_entry *fh) |
bb700d78 | 5127 | { |
8c5b4e52 AM |
5128 | bfd *abfd = fh->elf.root.u.undef.abfd; |
5129 | struct bfd_link_hash_entry *bh = NULL; | |
bb700d78 | 5130 | struct ppc_link_hash_entry *fdh; |
8c5b4e52 AM |
5131 | flagword flags = (fh->elf.root.type == bfd_link_hash_undefweak |
5132 | ? BSF_WEAK | |
5133 | : BSF_GLOBAL); | |
5134 | ||
5135 | if (!_bfd_generic_link_add_one_symbol (info, abfd, | |
5136 | fh->elf.root.root.string + 1, | |
5137 | flags, bfd_und_section_ptr, 0, | |
5138 | NULL, FALSE, FALSE, &bh)) | |
bb700d78 AM |
5139 | return NULL; |
5140 | ||
5141 | fdh = (struct ppc_link_hash_entry *) bh; | |
5142 | fdh->elf.non_elf = 0; | |
908b32fc AM |
5143 | fdh->fake = 1; |
5144 | fdh->is_func_descriptor = 1; | |
5145 | fdh->oh = fh; | |
5146 | fh->is_func = 1; | |
5147 | fh->oh = fdh; | |
bb700d78 AM |
5148 | return fdh; |
5149 | } | |
5150 | ||
8387904d AM |
5151 | /* Fix function descriptor symbols defined in .opd sections to be |
5152 | function type. */ | |
555cd476 AM |
5153 | |
5154 | static bfd_boolean | |
c16153ae | 5155 | ppc64_elf_add_symbol_hook (bfd *ibfd, |
e054468f | 5156 | struct bfd_link_info *info, |
555cd476 | 5157 | Elf_Internal_Sym *isym, |
6911b7dc | 5158 | const char **name, |
555cd476 AM |
5159 | flagword *flags ATTRIBUTE_UNUSED, |
5160 | asection **sec, | |
b53dfeb2 | 5161 | bfd_vma *value) |
555cd476 | 5162 | { |
b53dfeb2 | 5163 | if (*sec != NULL |
f1885d1e | 5164 | && strcmp ((*sec)->name, ".opd") == 0) |
b53dfeb2 AM |
5165 | { |
5166 | asection *code_sec; | |
5167 | ||
5168 | if (!(ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC | |
5169 | || ELF_ST_TYPE (isym->st_info) == STT_FUNC)) | |
5170 | isym->st_info = ELF_ST_INFO (ELF_ST_BIND (isym->st_info), STT_FUNC); | |
5171 | ||
5172 | /* If the symbol is a function defined in .opd, and the function | |
5173 | code is in a discarded group, let it appear to be undefined. */ | |
0e1862bb | 5174 | if (!bfd_link_relocatable (info) |
b53dfeb2 AM |
5175 | && (*sec)->reloc_count != 0 |
5176 | && opd_entry_value (*sec, *value, &code_sec, NULL, | |
5177 | FALSE) != (bfd_vma) -1 | |
5178 | && discarded_section (code_sec)) | |
5179 | { | |
5180 | *sec = bfd_und_section_ptr; | |
5181 | isym->st_shndx = SHN_UNDEF; | |
5182 | } | |
5183 | } | |
dbd1e97e AM |
5184 | else if (*sec != NULL |
5185 | && strcmp ((*sec)->name, ".toc") == 0 | |
5186 | && ELF_ST_TYPE (isym->st_info) == STT_OBJECT) | |
5187 | { | |
5188 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
5189 | if (htab != NULL) | |
5190 | htab->params->object_in_toc = 1; | |
5191 | } | |
433817dd | 5192 | |
6911b7dc AM |
5193 | if ((STO_PPC64_LOCAL_MASK & isym->st_other) != 0) |
5194 | { | |
5195 | if (abiversion (ibfd) == 0) | |
5196 | set_abiversion (ibfd, 2); | |
5197 | else if (abiversion (ibfd) == 1) | |
5198 | { | |
cf97bcb0 AM |
5199 | _bfd_error_handler (_("symbol '%s' has invalid st_other" |
5200 | " for ABI version 1"), *name); | |
6911b7dc AM |
5201 | bfd_set_error (bfd_error_bad_value); |
5202 | return FALSE; | |
5203 | } | |
5204 | } | |
5205 | ||
555cd476 AM |
5206 | return TRUE; |
5207 | } | |
5208 | ||
6911b7dc AM |
5209 | /* Merge non-visibility st_other attributes: local entry point. */ |
5210 | ||
5211 | static void | |
5212 | ppc64_elf_merge_symbol_attribute (struct elf_link_hash_entry *h, | |
5213 | const Elf_Internal_Sym *isym, | |
5214 | bfd_boolean definition, | |
5215 | bfd_boolean dynamic) | |
5216 | { | |
f378ab09 | 5217 | if (definition && (!dynamic || !h->def_regular)) |
6911b7dc AM |
5218 | h->other = ((isym->st_other & ~ELF_ST_VISIBILITY (-1)) |
5219 | | ELF_ST_VISIBILITY (h->other)); | |
5220 | } | |
5221 | ||
8c5b4e52 AM |
5222 | /* Hook called on merging a symbol. We use this to clear "fake" since |
5223 | we now have a real symbol. */ | |
5224 | ||
5225 | static bfd_boolean | |
5226 | ppc64_elf_merge_symbol (struct elf_link_hash_entry *h, | |
8b5f1ed8 | 5227 | const Elf_Internal_Sym *isym, |
8c5b4e52 AM |
5228 | asection **psec ATTRIBUTE_UNUSED, |
5229 | bfd_boolean newdef ATTRIBUTE_UNUSED, | |
5230 | bfd_boolean olddef ATTRIBUTE_UNUSED, | |
5231 | bfd *oldbfd ATTRIBUTE_UNUSED, | |
5232 | const asection *oldsec ATTRIBUTE_UNUSED) | |
5233 | { | |
5234 | ((struct ppc_link_hash_entry *) h)->fake = 0; | |
8b5f1ed8 AM |
5235 | if ((STO_PPC64_LOCAL_MASK & isym->st_other) != 0) |
5236 | ((struct ppc_link_hash_entry *) h)->non_zero_localentry = 1; | |
8c5b4e52 AM |
5237 | return TRUE; |
5238 | } | |
5239 | ||
8387904d | 5240 | /* This function makes an old ABI object reference to ".bar" cause the |
908b32fc AM |
5241 | inclusion of a new ABI object archive that defines "bar". |
5242 | NAME is a symbol defined in an archive. Return a symbol in the hash | |
5243 | table that might be satisfied by the archive symbols. */ | |
8387904d AM |
5244 | |
5245 | static struct elf_link_hash_entry * | |
5246 | ppc64_elf_archive_symbol_lookup (bfd *abfd, | |
5247 | struct bfd_link_info *info, | |
5248 | const char *name) | |
5249 | { | |
5250 | struct elf_link_hash_entry *h; | |
5251 | char *dot_name; | |
5252 | size_t len; | |
5253 | ||
5254 | h = _bfd_elf_archive_symbol_lookup (abfd, info, name); | |
908b32fc AM |
5255 | if (h != NULL |
5256 | /* Don't return this sym if it is a fake function descriptor | |
5257 | created by add_symbol_adjust. */ | |
8c5b4e52 | 5258 | && !((struct ppc_link_hash_entry *) h)->fake) |
8387904d AM |
5259 | return h; |
5260 | ||
5261 | if (name[0] == '.') | |
5262 | return h; | |
5263 | ||
5264 | len = strlen (name); | |
5265 | dot_name = bfd_alloc (abfd, len + 2); | |
5266 | if (dot_name == NULL) | |
e99955cd | 5267 | return (struct elf_link_hash_entry *) -1; |
8387904d AM |
5268 | dot_name[0] = '.'; |
5269 | memcpy (dot_name + 1, name, len + 1); | |
5270 | h = _bfd_elf_archive_symbol_lookup (abfd, info, dot_name); | |
5271 | bfd_release (abfd, dot_name); | |
5272 | return h; | |
5273 | } | |
5274 | ||
5275 | /* This function satisfies all old ABI object references to ".bar" if a | |
99877b66 AM |
5276 | new ABI object defines "bar". Well, at least, undefined dot symbols |
5277 | are made weak. This stops later archive searches from including an | |
5278 | object if we already have a function descriptor definition. It also | |
35b0ce59 AM |
5279 | prevents the linker complaining about undefined symbols. |
5280 | We also check and correct mismatched symbol visibility here. The | |
5281 | most restrictive visibility of the function descriptor and the | |
5282 | function entry symbol is used. */ | |
8387904d AM |
5283 | |
5284 | static bfd_boolean | |
b3fac117 | 5285 | add_symbol_adjust (struct ppc_link_hash_entry *eh, struct bfd_link_info *info) |
8387904d | 5286 | { |
8387904d AM |
5287 | struct ppc_link_hash_table *htab; |
5288 | struct ppc_link_hash_entry *fdh; | |
5289 | ||
b3fac117 AM |
5290 | if (eh->elf.root.type == bfd_link_hash_warning) |
5291 | eh = (struct ppc_link_hash_entry *) eh->elf.root.u.i.link; | |
8387904d | 5292 | |
8400d40d AM |
5293 | if (eh->elf.root.type == bfd_link_hash_indirect) |
5294 | return TRUE; | |
5295 | ||
b3fac117 AM |
5296 | if (eh->elf.root.root.string[0] != '.') |
5297 | abort (); | |
8387904d | 5298 | |
b3fac117 | 5299 | htab = ppc_hash_table (info); |
4dfe6ac6 NC |
5300 | if (htab == NULL) |
5301 | return FALSE; | |
5302 | ||
b31867b6 | 5303 | fdh = lookup_fdh (eh, htab); |
8c5b4e52 AM |
5304 | if (fdh == NULL |
5305 | && !bfd_link_relocatable (info) | |
5306 | && (eh->elf.root.type == bfd_link_hash_undefined | |
5307 | || eh->elf.root.type == bfd_link_hash_undefweak) | |
5308 | && eh->elf.ref_regular) | |
5309 | { | |
5310 | /* Make an undefined function descriptor sym, in order to | |
5311 | pull in an --as-needed shared lib. Archives are handled | |
5312 | elsewhere. */ | |
5313 | fdh = make_fdh (info, eh); | |
5314 | if (fdh == NULL) | |
5315 | return FALSE; | |
bb700d78 | 5316 | } |
8c5b4e52 AM |
5317 | |
5318 | if (fdh != NULL) | |
8387904d | 5319 | { |
35b0ce59 AM |
5320 | unsigned entry_vis = ELF_ST_VISIBILITY (eh->elf.other) - 1; |
5321 | unsigned descr_vis = ELF_ST_VISIBILITY (fdh->elf.other) - 1; | |
8c5b4e52 AM |
5322 | |
5323 | /* Make both descriptor and entry symbol have the most | |
5324 | constraining visibility of either symbol. */ | |
35b0ce59 AM |
5325 | if (entry_vis < descr_vis) |
5326 | fdh->elf.other += entry_vis - descr_vis; | |
5327 | else if (entry_vis > descr_vis) | |
5328 | eh->elf.other += descr_vis - entry_vis; | |
5329 | ||
8c5b4e52 AM |
5330 | /* Propagate reference flags from entry symbol to function |
5331 | descriptor symbol. */ | |
bc4e12de | 5332 | fdh->elf.root.non_ir_ref_regular |= eh->elf.root.non_ir_ref_regular; |
4070765b | 5333 | fdh->elf.root.non_ir_ref_dynamic |= eh->elf.root.non_ir_ref_dynamic; |
8c5b4e52 AM |
5334 | fdh->elf.ref_regular |= eh->elf.ref_regular; |
5335 | fdh->elf.ref_regular_nonweak |= eh->elf.ref_regular_nonweak; | |
5336 | ||
5337 | if (!fdh->elf.forced_local | |
5338 | && fdh->elf.dynindx == -1 | |
5339 | && fdh->elf.versioned != versioned_hidden | |
5340 | && (bfd_link_dll (info) | |
5341 | || fdh->elf.def_dynamic | |
5342 | || fdh->elf.ref_dynamic) | |
5343 | && (eh->elf.ref_regular | |
5344 | || eh->elf.def_regular)) | |
5345 | { | |
2cdcc330 | 5346 | if (!bfd_elf_link_record_dynamic_symbol (info, &fdh->elf)) |
8c5b4e52 | 5347 | return FALSE; |
35b0ce59 | 5348 | } |
8387904d | 5349 | } |
99877b66 | 5350 | |
8387904d AM |
5351 | return TRUE; |
5352 | } | |
5353 | ||
f6c7c3e8 AM |
5354 | /* Set up opd section info and abiversion for IBFD, and process list |
5355 | of dot-symbols we made in link_hash_newfunc. */ | |
b3fac117 | 5356 | |
8387904d | 5357 | static bfd_boolean |
f6c7c3e8 | 5358 | ppc64_elf_before_check_relocs (bfd *ibfd, struct bfd_link_info *info) |
8387904d | 5359 | { |
99877b66 | 5360 | struct ppc_link_hash_table *htab; |
b3fac117 | 5361 | struct ppc_link_hash_entry **p, *eh; |
459609d6 | 5362 | asection *opd = bfd_get_section_by_name (ibfd, ".opd"); |
433817dd | 5363 | |
459609d6 | 5364 | if (opd != NULL && opd->size != 0) |
b3fac117 | 5365 | { |
b9399fcf AM |
5366 | BFD_ASSERT (ppc64_elf_section_data (opd)->sec_type == sec_normal); |
5367 | ppc64_elf_section_data (opd)->sec_type = sec_opd; | |
5368 | ||
459609d6 AM |
5369 | if (abiversion (ibfd) == 0) |
5370 | set_abiversion (ibfd, 1); | |
8a2058b5 | 5371 | else if (abiversion (ibfd) >= 2) |
f6c7c3e8 | 5372 | { |
695344c0 | 5373 | /* xgettext:c-format */ |
cf97bcb0 AM |
5374 | _bfd_error_handler (_("%pB .opd not allowed in ABI version %d"), |
5375 | ibfd, abiversion (ibfd)); | |
459609d6 AM |
5376 | bfd_set_error (bfd_error_bad_value); |
5377 | return FALSE; | |
f6c7c3e8 | 5378 | } |
b9399fcf | 5379 | } |
f6c7c3e8 | 5380 | |
b9399fcf AM |
5381 | if (is_ppc64_elf (info->output_bfd)) |
5382 | { | |
5383 | /* For input files without an explicit abiversion in e_flags | |
5384 | we should have flagged any with symbol st_other bits set | |
5385 | as ELFv1 and above flagged those with .opd as ELFv2. | |
5386 | Set the output abiversion if not yet set, and for any input | |
5387 | still ambiguous, take its abiversion from the output. | |
5388 | Differences in ABI are reported later. */ | |
5389 | if (abiversion (info->output_bfd) == 0) | |
5390 | set_abiversion (info->output_bfd, abiversion (ibfd)); | |
5391 | else if (abiversion (ibfd) == 0) | |
5392 | set_abiversion (ibfd, abiversion (info->output_bfd)); | |
b3fac117 AM |
5393 | } |
5394 | ||
459609d6 AM |
5395 | htab = ppc_hash_table (info); |
5396 | if (htab == NULL) | |
b9399fcf | 5397 | return TRUE; |
459609d6 | 5398 | |
b9399fcf AM |
5399 | if (opd != NULL && opd->size != 0 |
5400 | && (ibfd->flags & DYNAMIC) == 0 | |
5401 | && (opd->flags & SEC_RELOC) != 0 | |
5402 | && opd->reloc_count != 0 | |
5403 | && !bfd_is_abs_section (opd->output_section) | |
5404 | && info->gc_sections) | |
5405 | { | |
5406 | /* Garbage collection needs some extra help with .opd sections. | |
5407 | We don't want to necessarily keep everything referenced by | |
5408 | relocs in .opd, as that would keep all functions. Instead, | |
5409 | if we reference an .opd symbol (a function descriptor), we | |
5410 | want to keep the function code symbol's section. This is | |
5411 | easy for global symbols, but for local syms we need to keep | |
5412 | information about the associated function section. */ | |
5413 | bfd_size_type amt; | |
5414 | asection **opd_sym_map; | |
5415 | Elf_Internal_Shdr *symtab_hdr; | |
5416 | Elf_Internal_Rela *relocs, *rel_end, *rel; | |
5417 | ||
5418 | amt = OPD_NDX (opd->size) * sizeof (*opd_sym_map); | |
5419 | opd_sym_map = bfd_zalloc (ibfd, amt); | |
5420 | if (opd_sym_map == NULL) | |
5421 | return FALSE; | |
5422 | ppc64_elf_section_data (opd)->u.opd.func_sec = opd_sym_map; | |
5423 | relocs = _bfd_elf_link_read_relocs (ibfd, opd, NULL, NULL, | |
5424 | info->keep_memory); | |
5425 | if (relocs == NULL) | |
5426 | return FALSE; | |
5427 | symtab_hdr = &elf_symtab_hdr (ibfd); | |
5428 | rel_end = relocs + opd->reloc_count - 1; | |
5429 | for (rel = relocs; rel < rel_end; rel++) | |
5430 | { | |
5431 | enum elf_ppc64_reloc_type r_type = ELF64_R_TYPE (rel->r_info); | |
5432 | unsigned long r_symndx = ELF64_R_SYM (rel->r_info); | |
5433 | ||
5434 | if (r_type == R_PPC64_ADDR64 | |
5435 | && ELF64_R_TYPE ((rel + 1)->r_info) == R_PPC64_TOC | |
5436 | && r_symndx < symtab_hdr->sh_info) | |
5437 | { | |
5438 | Elf_Internal_Sym *isym; | |
5439 | asection *s; | |
5440 | ||
5441 | isym = bfd_sym_from_r_symndx (&htab->sym_cache, ibfd, r_symndx); | |
5442 | if (isym == NULL) | |
5443 | { | |
5444 | if (elf_section_data (opd)->relocs != relocs) | |
5445 | free (relocs); | |
5446 | return FALSE; | |
5447 | } | |
5448 | ||
5449 | s = bfd_section_from_elf_index (ibfd, isym->st_shndx); | |
5450 | if (s != NULL && s != opd) | |
5451 | opd_sym_map[OPD_NDX (rel->r_offset)] = s; | |
5452 | } | |
5453 | } | |
5454 | if (elf_section_data (opd)->relocs != relocs) | |
5455 | free (relocs); | |
5456 | } | |
459609d6 AM |
5457 | |
5458 | p = &htab->dot_syms; | |
5459 | while ((eh = *p) != NULL) | |
5460 | { | |
5461 | *p = NULL; | |
5462 | if (&eh->elf == htab->elf.hgot) | |
5463 | ; | |
5464 | else if (htab->elf.hgot == NULL | |
5465 | && strcmp (eh->elf.root.root.string, ".TOC.") == 0) | |
5466 | htab->elf.hgot = &eh->elf; | |
8c5b4e52 AM |
5467 | else if (abiversion (ibfd) <= 1) |
5468 | { | |
5469 | htab->need_func_desc_adj = 1; | |
5470 | if (!add_symbol_adjust (eh, info)) | |
5471 | return FALSE; | |
5472 | } | |
459609d6 AM |
5473 | p = &eh->u.next_dot_sym; |
5474 | } | |
b3fac117 | 5475 | return TRUE; |
8387904d AM |
5476 | } |
5477 | ||
97fed1c9 JJ |
5478 | /* Undo hash table changes when an --as-needed input file is determined |
5479 | not to be needed. */ | |
5480 | ||
5481 | static bfd_boolean | |
e5034e59 AM |
5482 | ppc64_elf_notice_as_needed (bfd *ibfd, |
5483 | struct bfd_link_info *info, | |
5484 | enum notice_asneeded_action act) | |
97fed1c9 | 5485 | { |
e5034e59 AM |
5486 | if (act == notice_not_needed) |
5487 | { | |
5488 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
4dfe6ac6 | 5489 | |
e5034e59 AM |
5490 | if (htab == NULL) |
5491 | return FALSE; | |
4dfe6ac6 | 5492 | |
e5034e59 AM |
5493 | htab->dot_syms = NULL; |
5494 | } | |
5495 | return _bfd_elf_notice_as_needed (ibfd, info, act); | |
97fed1c9 JJ |
5496 | } |
5497 | ||
aa374f67 AM |
5498 | /* If --just-symbols against a final linked binary, then assume we need |
5499 | toc adjusting stubs when calling functions defined there. */ | |
5500 | ||
5501 | static void | |
5502 | ppc64_elf_link_just_syms (asection *sec, struct bfd_link_info *info) | |
5503 | { | |
5504 | if ((sec->flags & SEC_CODE) != 0 | |
5505 | && (sec->owner->flags & (EXEC_P | DYNAMIC)) != 0 | |
5506 | && is_ppc64_elf (sec->owner)) | |
5507 | { | |
2c3f079f AM |
5508 | if (abiversion (sec->owner) >= 2 |
5509 | || bfd_get_section_by_name (sec->owner, ".opd") != NULL) | |
aa374f67 AM |
5510 | sec->has_toc_reloc = 1; |
5511 | } | |
5512 | _bfd_elf_link_just_syms (sec, info); | |
5513 | } | |
5514 | ||
e054468f | 5515 | static struct plt_entry ** |
4ce794b7 AM |
5516 | update_local_sym_info (bfd *abfd, Elf_Internal_Shdr *symtab_hdr, |
5517 | unsigned long r_symndx, bfd_vma r_addend, int tls_type) | |
411e1bfb AM |
5518 | { |
5519 | struct got_entry **local_got_ents = elf_local_got_ents (abfd); | |
e054468f | 5520 | struct plt_entry **local_plt; |
f961d9dd | 5521 | unsigned char *local_got_tls_masks; |
411e1bfb AM |
5522 | |
5523 | if (local_got_ents == NULL) | |
5524 | { | |
5525 | bfd_size_type size = symtab_hdr->sh_info; | |
5526 | ||
e054468f AM |
5527 | size *= (sizeof (*local_got_ents) |
5528 | + sizeof (*local_plt) | |
5529 | + sizeof (*local_got_tls_masks)); | |
4ce794b7 | 5530 | local_got_ents = bfd_zalloc (abfd, size); |
411e1bfb | 5531 | if (local_got_ents == NULL) |
e054468f | 5532 | return NULL; |
411e1bfb AM |
5533 | elf_local_got_ents (abfd) = local_got_ents; |
5534 | } | |
5535 | ||
37da22e5 | 5536 | if ((tls_type & (NON_GOT | TLS_EXPLICIT)) == 0) |
411e1bfb AM |
5537 | { |
5538 | struct got_entry *ent; | |
5539 | ||
5540 | for (ent = local_got_ents[r_symndx]; ent != NULL; ent = ent->next) | |
e717da7e AM |
5541 | if (ent->addend == r_addend |
5542 | && ent->owner == abfd | |
5543 | && ent->tls_type == tls_type) | |
411e1bfb AM |
5544 | break; |
5545 | if (ent == NULL) | |
5546 | { | |
5547 | bfd_size_type amt = sizeof (*ent); | |
4ce794b7 | 5548 | ent = bfd_alloc (abfd, amt); |
411e1bfb AM |
5549 | if (ent == NULL) |
5550 | return FALSE; | |
5551 | ent->next = local_got_ents[r_symndx]; | |
5552 | ent->addend = r_addend; | |
e717da7e | 5553 | ent->owner = abfd; |
411e1bfb | 5554 | ent->tls_type = tls_type; |
927be08e | 5555 | ent->is_indirect = FALSE; |
411e1bfb AM |
5556 | ent->got.refcount = 0; |
5557 | local_got_ents[r_symndx] = ent; | |
5558 | } | |
5559 | ent->got.refcount += 1; | |
5560 | } | |
5561 | ||
e054468f | 5562 | local_plt = (struct plt_entry **) (local_got_ents + symtab_hdr->sh_info); |
f961d9dd | 5563 | local_got_tls_masks = (unsigned char *) (local_plt + symtab_hdr->sh_info); |
37da22e5 | 5564 | local_got_tls_masks[r_symndx] |= tls_type & 0xff; |
e054468f AM |
5565 | |
5566 | return local_plt + r_symndx; | |
65f38f15 AM |
5567 | } |
5568 | ||
411e1bfb | 5569 | static bfd_boolean |
e054468f | 5570 | update_plt_info (bfd *abfd, struct plt_entry **plist, bfd_vma addend) |
1e2f5b6e | 5571 | { |
411e1bfb | 5572 | struct plt_entry *ent; |
1e2f5b6e | 5573 | |
e054468f | 5574 | for (ent = *plist; ent != NULL; ent = ent->next) |
411e1bfb AM |
5575 | if (ent->addend == addend) |
5576 | break; | |
5577 | if (ent == NULL) | |
1e2f5b6e | 5578 | { |
411e1bfb | 5579 | bfd_size_type amt = sizeof (*ent); |
4ce794b7 | 5580 | ent = bfd_alloc (abfd, amt); |
411e1bfb AM |
5581 | if (ent == NULL) |
5582 | return FALSE; | |
e054468f | 5583 | ent->next = *plist; |
411e1bfb AM |
5584 | ent->addend = addend; |
5585 | ent->plt.refcount = 0; | |
e054468f | 5586 | *plist = ent; |
1e2f5b6e | 5587 | } |
411e1bfb | 5588 | ent->plt.refcount += 1; |
b34976b6 | 5589 | return TRUE; |
1e2f5b6e AM |
5590 | } |
5591 | ||
e054468f AM |
5592 | static bfd_boolean |
5593 | is_branch_reloc (enum elf_ppc64_reloc_type r_type) | |
5594 | { | |
5595 | return (r_type == R_PPC64_REL24 | |
05d0e962 | 5596 | || r_type == R_PPC64_REL24_NOTOC |
e054468f AM |
5597 | || r_type == R_PPC64_REL14 |
5598 | || r_type == R_PPC64_REL14_BRTAKEN | |
5599 | || r_type == R_PPC64_REL14_BRNTAKEN | |
5600 | || r_type == R_PPC64_ADDR24 | |
5601 | || r_type == R_PPC64_ADDR14 | |
5602 | || r_type == R_PPC64_ADDR14_BRTAKEN | |
23cedd1d AM |
5603 | || r_type == R_PPC64_ADDR14_BRNTAKEN |
5604 | || r_type == R_PPC64_PLTCALL); | |
5605 | } | |
5606 | ||
5607 | /* Relocs on inline plt call sequence insns prior to the call. */ | |
5608 | ||
5609 | static bfd_boolean | |
5610 | is_plt_seq_reloc (enum elf_ppc64_reloc_type r_type) | |
5611 | { | |
5612 | return (r_type == R_PPC64_PLT16_HA | |
5613 | || r_type == R_PPC64_PLT16_HI | |
5614 | || r_type == R_PPC64_PLT16_LO | |
5615 | || r_type == R_PPC64_PLT16_LO_DS | |
5616 | || r_type == R_PPC64_PLTSEQ); | |
e054468f AM |
5617 | } |
5618 | ||
5bd4f169 | 5619 | /* Look through the relocs for a section during the first phase, and |
65f38f15 | 5620 | calculate needed space in the global offset table, procedure |
5d1634d7 | 5621 | linkage table, and dynamic reloc sections. */ |
5bd4f169 | 5622 | |
b34976b6 | 5623 | static bfd_boolean |
4ce794b7 AM |
5624 | ppc64_elf_check_relocs (bfd *abfd, struct bfd_link_info *info, |
5625 | asection *sec, const Elf_Internal_Rela *relocs) | |
5bd4f169 | 5626 | { |
65f38f15 | 5627 | struct ppc_link_hash_table *htab; |
5bd4f169 | 5628 | Elf_Internal_Shdr *symtab_hdr; |
c7e2358a | 5629 | struct elf_link_hash_entry **sym_hashes; |
5bd4f169 AM |
5630 | const Elf_Internal_Rela *rel; |
5631 | const Elf_Internal_Rela *rel_end; | |
5bd4f169 | 5632 | asection *sreloc; |
3a71aa26 | 5633 | struct elf_link_hash_entry *tga, *dottga; |
b9399fcf | 5634 | bfd_boolean is_opd; |
5bd4f169 | 5635 | |
0e1862bb | 5636 | if (bfd_link_relocatable (info)) |
b34976b6 | 5637 | return TRUE; |
5bd4f169 | 5638 | |
680a3378 AM |
5639 | /* Don't do anything special with non-loaded, non-alloced sections. |
5640 | In particular, any relocs in such sections should not affect GOT | |
5641 | and PLT reference counting (ie. we don't allow them to create GOT | |
5642 | or PLT entries), there's no possibility or desire to optimize TLS | |
5643 | relocs, and there's not much point in propagating relocs to shared | |
5644 | libs that the dynamic linker won't relocate. */ | |
5645 | if ((sec->flags & SEC_ALLOC) == 0) | |
5646 | return TRUE; | |
5647 | ||
0c8d6e5c | 5648 | BFD_ASSERT (is_ppc64_elf (abfd)); |
0ffa91dd | 5649 | |
65f38f15 | 5650 | htab = ppc_hash_table (info); |
4dfe6ac6 NC |
5651 | if (htab == NULL) |
5652 | return FALSE; | |
5653 | ||
3a71aa26 AM |
5654 | tga = elf_link_hash_lookup (&htab->elf, "__tls_get_addr", |
5655 | FALSE, FALSE, TRUE); | |
5656 | dottga = elf_link_hash_lookup (&htab->elf, ".__tls_get_addr", | |
5657 | FALSE, FALSE, TRUE); | |
0ffa91dd | 5658 | symtab_hdr = &elf_symtab_hdr (abfd); |
5bd4f169 | 5659 | sym_hashes = elf_sym_hashes (abfd); |
5bd4f169 | 5660 | sreloc = NULL; |
b9399fcf | 5661 | is_opd = ppc64_elf_section_data (sec)->sec_type == sec_opd; |
5bd4f169 AM |
5662 | rel_end = relocs + sec->reloc_count; |
5663 | for (rel = relocs; rel < rel_end; rel++) | |
5664 | { | |
5665 | unsigned long r_symndx; | |
5666 | struct elf_link_hash_entry *h; | |
04c9666a | 5667 | enum elf_ppc64_reloc_type r_type; |
727fc41e | 5668 | int tls_type; |
7c8fe5c4 | 5669 | struct _ppc64_elf_section_data *ppc64_sec; |
cbf95972 | 5670 | struct plt_entry **ifunc, **plt_list; |
5bd4f169 AM |
5671 | |
5672 | r_symndx = ELF64_R_SYM (rel->r_info); | |
5673 | if (r_symndx < symtab_hdr->sh_info) | |
5674 | h = NULL; | |
5675 | else | |
973a3492 L |
5676 | { |
5677 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; | |
b31867b6 | 5678 | h = elf_follow_link (h); |
1c865ab2 AM |
5679 | |
5680 | if (h == htab->elf.hgot) | |
5681 | sec->has_toc_reloc = 1; | |
973a3492 | 5682 | } |
5bd4f169 | 5683 | |
727fc41e | 5684 | tls_type = 0; |
e054468f | 5685 | ifunc = NULL; |
25f23106 AM |
5686 | if (h != NULL) |
5687 | { | |
5688 | if (h->type == STT_GNU_IFUNC) | |
5689 | { | |
5690 | h->needs_plt = 1; | |
5691 | ifunc = &h->plt.plist; | |
5692 | } | |
5693 | } | |
5694 | else | |
5695 | { | |
5696 | Elf_Internal_Sym *isym = bfd_sym_from_r_symndx (&htab->sym_cache, | |
5697 | abfd, r_symndx); | |
5698 | if (isym == NULL) | |
5699 | return FALSE; | |
5700 | ||
5701 | if (ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC) | |
5702 | { | |
5703 | ifunc = update_local_sym_info (abfd, symtab_hdr, r_symndx, | |
37da22e5 AM |
5704 | rel->r_addend, |
5705 | NON_GOT | PLT_IFUNC); | |
25f23106 AM |
5706 | if (ifunc == NULL) |
5707 | return FALSE; | |
5708 | } | |
5709 | } | |
727fc41e | 5710 | |
cbf95972 | 5711 | r_type = ELF64_R_TYPE (rel->r_info); |
a33d1f77 | 5712 | switch (r_type) |
5bd4f169 | 5713 | { |
727fc41e AM |
5714 | case R_PPC64_TLSGD: |
5715 | case R_PPC64_TLSLD: | |
5716 | /* These special tls relocs tie a call to __tls_get_addr with | |
5717 | its parameter symbol. */ | |
37da22e5 AM |
5718 | if (h != NULL) |
5719 | ((struct ppc_link_hash_entry *) h)->tls_mask |= TLS_TLS | TLS_MARK; | |
5720 | else | |
5721 | if (!update_local_sym_info (abfd, symtab_hdr, r_symndx, | |
5722 | rel->r_addend, | |
5723 | NON_GOT | TLS_TLS | TLS_MARK)) | |
5724 | return FALSE; | |
5725 | sec->has_tls_reloc = 1; | |
727fc41e AM |
5726 | break; |
5727 | ||
411e1bfb AM |
5728 | case R_PPC64_GOT_TLSLD16: |
5729 | case R_PPC64_GOT_TLSLD16_LO: | |
5730 | case R_PPC64_GOT_TLSLD16_HI: | |
5731 | case R_PPC64_GOT_TLSLD16_HA: | |
951fd09b | 5732 | tls_type = TLS_TLS | TLS_LD; |
411e1bfb AM |
5733 | goto dogottls; |
5734 | ||
5735 | case R_PPC64_GOT_TLSGD16: | |
5736 | case R_PPC64_GOT_TLSGD16_LO: | |
5737 | case R_PPC64_GOT_TLSGD16_HI: | |
5738 | case R_PPC64_GOT_TLSGD16_HA: | |
951fd09b | 5739 | tls_type = TLS_TLS | TLS_GD; |
411e1bfb AM |
5740 | goto dogottls; |
5741 | ||
5742 | case R_PPC64_GOT_TPREL16_DS: | |
5743 | case R_PPC64_GOT_TPREL16_LO_DS: | |
5744 | case R_PPC64_GOT_TPREL16_HI: | |
5745 | case R_PPC64_GOT_TPREL16_HA: | |
7c8bbca5 | 5746 | if (bfd_link_dll (info)) |
411e1bfb AM |
5747 | info->flags |= DF_STATIC_TLS; |
5748 | tls_type = TLS_TLS | TLS_TPREL; | |
5749 | goto dogottls; | |
5750 | ||
5751 | case R_PPC64_GOT_DTPREL16_DS: | |
5752 | case R_PPC64_GOT_DTPREL16_LO_DS: | |
5753 | case R_PPC64_GOT_DTPREL16_HI: | |
5754 | case R_PPC64_GOT_DTPREL16_HA: | |
5755 | tls_type = TLS_TLS | TLS_DTPREL; | |
5756 | dogottls: | |
5757 | sec->has_tls_reloc = 1; | |
1a0670f3 | 5758 | /* Fall through */ |
411e1bfb | 5759 | |
5bd4f169 | 5760 | case R_PPC64_GOT16: |
5bd4f169 | 5761 | case R_PPC64_GOT16_DS: |
65f38f15 AM |
5762 | case R_PPC64_GOT16_HA: |
5763 | case R_PPC64_GOT16_HI: | |
5764 | case R_PPC64_GOT16_LO: | |
5bd4f169 | 5765 | case R_PPC64_GOT16_LO_DS: |
65f38f15 | 5766 | /* This symbol requires a global offset table entry. */ |
4c52953f | 5767 | sec->has_toc_reloc = 1; |
33c0ec9d AM |
5768 | if (r_type == R_PPC64_GOT_TLSLD16 |
5769 | || r_type == R_PPC64_GOT_TLSGD16 | |
5770 | || r_type == R_PPC64_GOT_TPREL16_DS | |
5771 | || r_type == R_PPC64_GOT_DTPREL16_DS | |
5772 | || r_type == R_PPC64_GOT16 | |
5773 | || r_type == R_PPC64_GOT16_DS) | |
5774 | { | |
5775 | htab->do_multi_toc = 1; | |
d77c8a4b | 5776 | ppc64_elf_tdata (abfd)->has_small_toc_reloc = 1; |
33c0ec9d AM |
5777 | } |
5778 | ||
e717da7e AM |
5779 | if (ppc64_elf_tdata (abfd)->got == NULL |
5780 | && !create_got_section (abfd, info)) | |
b34976b6 | 5781 | return FALSE; |
5bd4f169 AM |
5782 | |
5783 | if (h != NULL) | |
5784 | { | |
411e1bfb AM |
5785 | struct ppc_link_hash_entry *eh; |
5786 | struct got_entry *ent; | |
65f38f15 | 5787 | |
411e1bfb AM |
5788 | eh = (struct ppc_link_hash_entry *) h; |
5789 | for (ent = eh->elf.got.glist; ent != NULL; ent = ent->next) | |
5790 | if (ent->addend == rel->r_addend | |
e717da7e | 5791 | && ent->owner == abfd |
411e1bfb AM |
5792 | && ent->tls_type == tls_type) |
5793 | break; | |
5794 | if (ent == NULL) | |
5bd4f169 | 5795 | { |
411e1bfb | 5796 | bfd_size_type amt = sizeof (*ent); |
4ce794b7 | 5797 | ent = bfd_alloc (abfd, amt); |
411e1bfb | 5798 | if (ent == NULL) |
b34976b6 | 5799 | return FALSE; |
411e1bfb AM |
5800 | ent->next = eh->elf.got.glist; |
5801 | ent->addend = rel->r_addend; | |
e717da7e | 5802 | ent->owner = abfd; |
411e1bfb | 5803 | ent->tls_type = tls_type; |
927be08e | 5804 | ent->is_indirect = FALSE; |
411e1bfb AM |
5805 | ent->got.refcount = 0; |
5806 | eh->elf.got.glist = ent; | |
5bd4f169 | 5807 | } |
411e1bfb | 5808 | ent->got.refcount += 1; |
e7b938ca | 5809 | eh->tls_mask |= tls_type; |
5bd4f169 | 5810 | } |
411e1bfb AM |
5811 | else |
5812 | /* This is a global offset table entry for a local symbol. */ | |
5813 | if (!update_local_sym_info (abfd, symtab_hdr, r_symndx, | |
5814 | rel->r_addend, tls_type)) | |
5815 | return FALSE; | |
a345bc8d AM |
5816 | |
5817 | /* We may also need a plt entry if the symbol turns out to be | |
5818 | an ifunc. */ | |
0e1862bb | 5819 | if (h != NULL && !bfd_link_pic (info) && abiversion (abfd) != 1) |
a345bc8d AM |
5820 | { |
5821 | if (!update_plt_info (abfd, &h->plt.plist, rel->r_addend)) | |
5822 | return FALSE; | |
5823 | } | |
5bd4f169 AM |
5824 | break; |
5825 | ||
5bd4f169 | 5826 | case R_PPC64_PLT16_HA: |
65f38f15 AM |
5827 | case R_PPC64_PLT16_HI: |
5828 | case R_PPC64_PLT16_LO: | |
08be3224 | 5829 | case R_PPC64_PLT16_LO_DS: |
65f38f15 AM |
5830 | case R_PPC64_PLT32: |
5831 | case R_PPC64_PLT64: | |
cbf95972 AM |
5832 | /* This symbol requires a procedure linkage table entry. */ |
5833 | plt_list = ifunc; | |
5834 | if (h != NULL) | |
e054468f | 5835 | { |
e054468f AM |
5836 | h->needs_plt = 1; |
5837 | if (h->root.root.string[0] == '.' | |
5838 | && h->root.root.string[1] != '\0') | |
5839 | ((struct ppc_link_hash_entry *) h)->is_func = 1; | |
2d7ad24e | 5840 | ((struct ppc_link_hash_entry *) h)->tls_mask |= PLT_KEEP; |
cbf95972 AM |
5841 | plt_list = &h->plt.plist; |
5842 | } | |
5843 | if (plt_list == NULL) | |
2d7ad24e AM |
5844 | plt_list = update_local_sym_info (abfd, symtab_hdr, r_symndx, |
5845 | rel->r_addend, | |
5846 | NON_GOT | PLT_KEEP); | |
cbf95972 AM |
5847 | if (!update_plt_info (abfd, plt_list, rel->r_addend)) |
5848 | return FALSE; | |
5bd4f169 AM |
5849 | break; |
5850 | ||
5851 | /* The following relocations don't need to propagate the | |
5852 | relocation if linking a shared object since they are | |
5853 | section relative. */ | |
5854 | case R_PPC64_SECTOFF: | |
5855 | case R_PPC64_SECTOFF_LO: | |
5856 | case R_PPC64_SECTOFF_HI: | |
5857 | case R_PPC64_SECTOFF_HA: | |
5858 | case R_PPC64_SECTOFF_DS: | |
5859 | case R_PPC64_SECTOFF_LO_DS: | |
411e1bfb AM |
5860 | case R_PPC64_DTPREL16: |
5861 | case R_PPC64_DTPREL16_LO: | |
5862 | case R_PPC64_DTPREL16_HI: | |
5863 | case R_PPC64_DTPREL16_HA: | |
5864 | case R_PPC64_DTPREL16_DS: | |
5865 | case R_PPC64_DTPREL16_LO_DS: | |
f9c6b907 AM |
5866 | case R_PPC64_DTPREL16_HIGH: |
5867 | case R_PPC64_DTPREL16_HIGHA: | |
411e1bfb AM |
5868 | case R_PPC64_DTPREL16_HIGHER: |
5869 | case R_PPC64_DTPREL16_HIGHERA: | |
5870 | case R_PPC64_DTPREL16_HIGHEST: | |
5871 | case R_PPC64_DTPREL16_HIGHESTA: | |
5bd4f169 AM |
5872 | break; |
5873 | ||
ad8e1ba5 | 5874 | /* Nor do these. */ |
25f23106 AM |
5875 | case R_PPC64_REL16: |
5876 | case R_PPC64_REL16_LO: | |
5877 | case R_PPC64_REL16_HI: | |
5878 | case R_PPC64_REL16_HA: | |
a680de9a | 5879 | case R_PPC64_REL16DX_HA: |
25f23106 AM |
5880 | break; |
5881 | ||
45965137 AM |
5882 | /* Not supported as a dynamic relocation. */ |
5883 | case R_PPC64_ADDR64_LOCAL: | |
0e1862bb | 5884 | if (bfd_link_pic (info)) |
45965137 AM |
5885 | { |
5886 | if (!ppc64_elf_howto_table[R_PPC64_ADDR32]) | |
5887 | ppc_howto_init (); | |
695344c0 | 5888 | /* xgettext:c-format */ |
174d0a74 | 5889 | info->callbacks->einfo (_("%H: %s reloc unsupported " |
cf97bcb0 | 5890 | "in shared libraries and PIEs\n"), |
45965137 AM |
5891 | abfd, sec, rel->r_offset, |
5892 | ppc64_elf_howto_table[r_type]->name); | |
5893 | bfd_set_error (bfd_error_bad_value); | |
5894 | return FALSE; | |
5895 | } | |
5896 | break; | |
5897 | ||
ad8e1ba5 | 5898 | case R_PPC64_TOC16: |
33c0ec9d AM |
5899 | case R_PPC64_TOC16_DS: |
5900 | htab->do_multi_toc = 1; | |
d77c8a4b | 5901 | ppc64_elf_tdata (abfd)->has_small_toc_reloc = 1; |
1a0670f3 | 5902 | /* Fall through. */ |
ad8e1ba5 AM |
5903 | case R_PPC64_TOC16_LO: |
5904 | case R_PPC64_TOC16_HI: | |
5905 | case R_PPC64_TOC16_HA: | |
ad8e1ba5 | 5906 | case R_PPC64_TOC16_LO_DS: |
4c52953f | 5907 | sec->has_toc_reloc = 1; |
ad8e1ba5 AM |
5908 | break; |
5909 | ||
006589cf AM |
5910 | /* Marker reloc. */ |
5911 | case R_PPC64_ENTRY: | |
5912 | break; | |
5913 | ||
5bd4f169 AM |
5914 | /* This relocation describes the C++ object vtable hierarchy. |
5915 | Reconstruct it for later use during GC. */ | |
5916 | case R_PPC64_GNU_VTINHERIT: | |
c152c796 | 5917 | if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset)) |
b34976b6 | 5918 | return FALSE; |
5bd4f169 AM |
5919 | break; |
5920 | ||
5921 | /* This relocation describes which C++ vtable entries are actually | |
5922 | used. Record for later use during GC. */ | |
5923 | case R_PPC64_GNU_VTENTRY: | |
d17e0c6e JB |
5924 | BFD_ASSERT (h != NULL); |
5925 | if (h != NULL | |
5926 | && !bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend)) | |
b34976b6 | 5927 | return FALSE; |
5bd4f169 AM |
5928 | break; |
5929 | ||
721956f4 AM |
5930 | case R_PPC64_REL14: |
5931 | case R_PPC64_REL14_BRTAKEN: | |
5932 | case R_PPC64_REL14_BRNTAKEN: | |
220c76dd AM |
5933 | { |
5934 | asection *dest = NULL; | |
5935 | ||
5936 | /* Heuristic: If jumping outside our section, chances are | |
5937 | we are going to need a stub. */ | |
5938 | if (h != NULL) | |
5939 | { | |
5940 | /* If the sym is weak it may be overridden later, so | |
5941 | don't assume we know where a weak sym lives. */ | |
5942 | if (h->root.type == bfd_link_hash_defined) | |
5943 | dest = h->root.u.def.section; | |
5944 | } | |
5945 | else | |
87d72d41 AM |
5946 | { |
5947 | Elf_Internal_Sym *isym; | |
5948 | ||
5949 | isym = bfd_sym_from_r_symndx (&htab->sym_cache, | |
5950 | abfd, r_symndx); | |
5951 | if (isym == NULL) | |
5952 | return FALSE; | |
5953 | ||
5954 | dest = bfd_section_from_elf_index (abfd, isym->st_shndx); | |
5955 | } | |
5956 | ||
220c76dd | 5957 | if (dest != sec) |
7c8fe5c4 | 5958 | ppc64_elf_section_data (sec)->has_14bit_branch = 1; |
220c76dd | 5959 | } |
3e04d765 AM |
5960 | goto rel24; |
5961 | ||
5962 | case R_PPC64_PLTCALL: | |
5963 | ppc64_elf_section_data (sec)->has_pltcall = 1; | |
721956f4 AM |
5964 | /* Fall through. */ |
5965 | ||
5d1634d7 | 5966 | case R_PPC64_REL24: |
05d0e962 | 5967 | case R_PPC64_REL24_NOTOC: |
3e04d765 | 5968 | rel24: |
cbf95972 AM |
5969 | plt_list = ifunc; |
5970 | if (h != NULL) | |
5d1634d7 | 5971 | { |
e054468f AM |
5972 | h->needs_plt = 1; |
5973 | if (h->root.root.string[0] == '.' | |
5974 | && h->root.root.string[1] != '\0') | |
5975 | ((struct ppc_link_hash_entry *) h)->is_func = 1; | |
cbf95972 | 5976 | |
3a71aa26 | 5977 | if (h == tga || h == dottga) |
cbf95972 AM |
5978 | { |
5979 | sec->has_tls_reloc = 1; | |
5980 | if (rel != relocs | |
5981 | && (ELF64_R_TYPE (rel[-1].r_info) == R_PPC64_TLSGD | |
5982 | || ELF64_R_TYPE (rel[-1].r_info) == R_PPC64_TLSLD)) | |
5983 | /* We have a new-style __tls_get_addr call with | |
5984 | a marker reloc. */ | |
5985 | ; | |
5986 | else | |
5987 | /* Mark this section as having an old-style call. */ | |
5988 | sec->has_tls_get_addr_call = 1; | |
5989 | } | |
5990 | plt_list = &h->plt.plist; | |
411e1bfb | 5991 | } |
cbf95972 AM |
5992 | |
5993 | /* We may need a .plt entry if the function this reloc | |
5994 | refers to is in a shared lib. */ | |
5995 | if (plt_list | |
5996 | && !update_plt_info (abfd, plt_list, rel->r_addend)) | |
5997 | return FALSE; | |
411e1bfb AM |
5998 | break; |
5999 | ||
cbf95972 AM |
6000 | case R_PPC64_ADDR14: |
6001 | case R_PPC64_ADDR14_BRNTAKEN: | |
6002 | case R_PPC64_ADDR14_BRTAKEN: | |
6003 | case R_PPC64_ADDR24: | |
6004 | goto dodyn; | |
6005 | ||
411e1bfb AM |
6006 | case R_PPC64_TPREL64: |
6007 | tls_type = TLS_EXPLICIT | TLS_TLS | TLS_TPREL; | |
7c8bbca5 | 6008 | if (bfd_link_dll (info)) |
411e1bfb AM |
6009 | info->flags |= DF_STATIC_TLS; |
6010 | goto dotlstoc; | |
6011 | ||
6012 | case R_PPC64_DTPMOD64: | |
6013 | if (rel + 1 < rel_end | |
6014 | && rel[1].r_info == ELF64_R_INFO (r_symndx, R_PPC64_DTPREL64) | |
6015 | && rel[1].r_offset == rel->r_offset + 8) | |
951fd09b | 6016 | tls_type = TLS_EXPLICIT | TLS_TLS | TLS_GD; |
411e1bfb | 6017 | else |
951fd09b | 6018 | tls_type = TLS_EXPLICIT | TLS_TLS | TLS_LD; |
411e1bfb AM |
6019 | goto dotlstoc; |
6020 | ||
6021 | case R_PPC64_DTPREL64: | |
6022 | tls_type = TLS_EXPLICIT | TLS_TLS | TLS_DTPREL; | |
6023 | if (rel != relocs | |
6024 | && rel[-1].r_info == ELF64_R_INFO (r_symndx, R_PPC64_DTPMOD64) | |
6025 | && rel[-1].r_offset == rel->r_offset - 8) | |
6026 | /* This is the second reloc of a dtpmod, dtprel pair. | |
6027 | Don't mark with TLS_DTPREL. */ | |
6028 | goto dodyn; | |
6029 | ||
6030 | dotlstoc: | |
6031 | sec->has_tls_reloc = 1; | |
6032 | if (h != NULL) | |
6033 | { | |
6034 | struct ppc_link_hash_entry *eh; | |
6035 | eh = (struct ppc_link_hash_entry *) h; | |
e7b938ca | 6036 | eh->tls_mask |= tls_type; |
411e1bfb AM |
6037 | } |
6038 | else | |
6039 | if (!update_local_sym_info (abfd, symtab_hdr, r_symndx, | |
6040 | rel->r_addend, tls_type)) | |
6041 | return FALSE; | |
6042 | ||
7c8fe5c4 AM |
6043 | ppc64_sec = ppc64_elf_section_data (sec); |
6044 | if (ppc64_sec->sec_type != sec_toc) | |
411e1bfb | 6045 | { |
3a71aa26 AM |
6046 | bfd_size_type amt; |
6047 | ||
e7b938ca | 6048 | /* One extra to simplify get_tls_mask. */ |
3a71aa26 AM |
6049 | amt = sec->size * sizeof (unsigned) / 8 + sizeof (unsigned); |
6050 | ppc64_sec->u.toc.symndx = bfd_zalloc (abfd, amt); | |
6051 | if (ppc64_sec->u.toc.symndx == NULL) | |
6052 | return FALSE; | |
6053 | amt = sec->size * sizeof (bfd_vma) / 8; | |
6054 | ppc64_sec->u.toc.add = bfd_zalloc (abfd, amt); | |
6055 | if (ppc64_sec->u.toc.add == NULL) | |
411e1bfb | 6056 | return FALSE; |
7c8fe5c4 AM |
6057 | BFD_ASSERT (ppc64_sec->sec_type == sec_normal); |
6058 | ppc64_sec->sec_type = sec_toc; | |
411e1bfb AM |
6059 | } |
6060 | BFD_ASSERT (rel->r_offset % 8 == 0); | |
3a71aa26 AM |
6061 | ppc64_sec->u.toc.symndx[rel->r_offset / 8] = r_symndx; |
6062 | ppc64_sec->u.toc.add[rel->r_offset / 8] = rel->r_addend; | |
951fd09b AM |
6063 | |
6064 | /* Mark the second slot of a GD or LD entry. | |
6065 | -1 to indicate GD and -2 to indicate LD. */ | |
6066 | if (tls_type == (TLS_EXPLICIT | TLS_TLS | TLS_GD)) | |
3a71aa26 | 6067 | ppc64_sec->u.toc.symndx[rel->r_offset / 8 + 1] = -1; |
951fd09b | 6068 | else if (tls_type == (TLS_EXPLICIT | TLS_TLS | TLS_LD)) |
3a71aa26 | 6069 | ppc64_sec->u.toc.symndx[rel->r_offset / 8 + 1] = -2; |
411e1bfb AM |
6070 | goto dodyn; |
6071 | ||
6072 | case R_PPC64_TPREL16: | |
6073 | case R_PPC64_TPREL16_LO: | |
6074 | case R_PPC64_TPREL16_HI: | |
6075 | case R_PPC64_TPREL16_HA: | |
6076 | case R_PPC64_TPREL16_DS: | |
6077 | case R_PPC64_TPREL16_LO_DS: | |
f9c6b907 AM |
6078 | case R_PPC64_TPREL16_HIGH: |
6079 | case R_PPC64_TPREL16_HIGHA: | |
411e1bfb AM |
6080 | case R_PPC64_TPREL16_HIGHER: |
6081 | case R_PPC64_TPREL16_HIGHERA: | |
6082 | case R_PPC64_TPREL16_HIGHEST: | |
6083 | case R_PPC64_TPREL16_HIGHESTA: | |
7c8bbca5 AM |
6084 | if (bfd_link_dll (info)) |
6085 | info->flags |= DF_STATIC_TLS; | |
6086 | goto dodyn; | |
5d1634d7 | 6087 | |
e86ce104 | 6088 | case R_PPC64_ADDR64: |
b9399fcf | 6089 | if (is_opd |
1e2f5b6e | 6090 | && rel + 1 < rel_end |
4ce794b7 | 6091 | && ELF64_R_TYPE ((rel + 1)->r_info) == R_PPC64_TOC) |
1e2f5b6e | 6092 | { |
8387904d | 6093 | if (h != NULL) |
8c5b4e52 | 6094 | ((struct ppc_link_hash_entry *) h)->is_func = 1; |
1e2f5b6e | 6095 | } |
e86ce104 AM |
6096 | /* Fall through. */ |
6097 | ||
65f38f15 AM |
6098 | case R_PPC64_ADDR16: |
6099 | case R_PPC64_ADDR16_DS: | |
6100 | case R_PPC64_ADDR16_HA: | |
6101 | case R_PPC64_ADDR16_HI: | |
f9c6b907 AM |
6102 | case R_PPC64_ADDR16_HIGH: |
6103 | case R_PPC64_ADDR16_HIGHA: | |
65f38f15 AM |
6104 | case R_PPC64_ADDR16_HIGHER: |
6105 | case R_PPC64_ADDR16_HIGHERA: | |
6106 | case R_PPC64_ADDR16_HIGHEST: | |
6107 | case R_PPC64_ADDR16_HIGHESTA: | |
6108 | case R_PPC64_ADDR16_LO: | |
6109 | case R_PPC64_ADDR16_LO_DS: | |
0e1862bb | 6110 | if (h != NULL && !bfd_link_pic (info) && abiversion (abfd) != 1 |
a345bc8d AM |
6111 | && rel->r_addend == 0) |
6112 | { | |
6113 | /* We may need a .plt entry if this reloc refers to a | |
6114 | function in a shared lib. */ | |
6115 | if (!update_plt_info (abfd, &h->plt.plist, rel->r_addend)) | |
6116 | return FALSE; | |
6117 | h->pointer_equality_needed = 1; | |
6118 | } | |
6119 | /* Fall through. */ | |
6120 | ||
6121 | case R_PPC64_REL30: | |
6122 | case R_PPC64_REL32: | |
6123 | case R_PPC64_REL64: | |
65f38f15 | 6124 | case R_PPC64_ADDR32: |
65f38f15 AM |
6125 | case R_PPC64_UADDR16: |
6126 | case R_PPC64_UADDR32: | |
6127 | case R_PPC64_UADDR64: | |
5bd4f169 | 6128 | case R_PPC64_TOC: |
0e1862bb | 6129 | if (h != NULL && !bfd_link_pic (info)) |
81848ca0 | 6130 | /* We may need a copy reloc. */ |
f5385ebf | 6131 | h->non_got_ref = 1; |
81848ca0 | 6132 | |
41bd81ab | 6133 | /* Don't propagate .opd relocs. */ |
b9399fcf | 6134 | if (NO_OPD_RELOCS && is_opd) |
e86ce104 | 6135 | break; |
e86ce104 | 6136 | |
65f38f15 AM |
6137 | /* If we are creating a shared library, and this is a reloc |
6138 | against a global symbol, or a non PC relative reloc | |
6139 | against a local symbol, then we need to copy the reloc | |
6140 | into the shared library. However, if we are linking with | |
6141 | -Bsymbolic, we do not need to copy a reloc against a | |
6142 | global symbol which is defined in an object we are | |
6143 | including in the link (i.e., DEF_REGULAR is set). At | |
6144 | this point we have not seen all the input files, so it is | |
6145 | possible that DEF_REGULAR is not set now but will be set | |
6146 | later (it is never cleared). In case of a weak definition, | |
6147 | DEF_REGULAR may be cleared later by a strong definition in | |
6148 | a shared library. We account for that possibility below by | |
f4656909 | 6149 | storing information in the dyn_relocs field of the hash |
65f38f15 AM |
6150 | table entry. A similar situation occurs when creating |
6151 | shared libraries and symbol visibility changes render the | |
6152 | symbol local. | |
6153 | ||
6154 | If on the other hand, we are creating an executable, we | |
6155 | may need to keep relocations for symbols satisfied by a | |
6156 | dynamic library if we manage to avoid copy relocs for the | |
6157 | symbol. */ | |
411e1bfb | 6158 | dodyn: |
0e1862bb | 6159 | if ((bfd_link_pic (info) |
1d483afe | 6160 | && (must_be_dyn_reloc (info, r_type) |
65f38f15 | 6161 | || (h != NULL |
198f1157 | 6162 | && (!SYMBOLIC_BIND (info, h) |
65f38f15 | 6163 | || h->root.type == bfd_link_hash_defweak |
f5385ebf | 6164 | || !h->def_regular)))) |
f4656909 | 6165 | || (ELIMINATE_COPY_RELOCS |
0e1862bb | 6166 | && !bfd_link_pic (info) |
65f38f15 AM |
6167 | && h != NULL |
6168 | && (h->root.type == bfd_link_hash_defweak | |
25f23106 | 6169 | || !h->def_regular)) |
0e1862bb | 6170 | || (!bfd_link_pic (info) |
25f23106 | 6171 | && ifunc != NULL)) |
5bd4f169 | 6172 | { |
65f38f15 AM |
6173 | /* We must copy these reloc types into the output file. |
6174 | Create a reloc section in dynobj and make room for | |
6175 | this reloc. */ | |
5bd4f169 AM |
6176 | if (sreloc == NULL) |
6177 | { | |
83bac4b0 NC |
6178 | sreloc = _bfd_elf_make_dynamic_reloc_section |
6179 | (sec, htab->elf.dynobj, 3, abfd, /*rela?*/ TRUE); | |
65f38f15 | 6180 | |
5bd4f169 | 6181 | if (sreloc == NULL) |
83bac4b0 | 6182 | return FALSE; |
5bd4f169 AM |
6183 | } |
6184 | ||
65f38f15 AM |
6185 | /* If this is a global symbol, we count the number of |
6186 | relocations we need for this symbol. */ | |
6187 | if (h != NULL) | |
6188 | { | |
19e08130 AM |
6189 | struct elf_dyn_relocs *p; |
6190 | struct elf_dyn_relocs **head; | |
6191 | ||
ec338859 | 6192 | head = &((struct ppc_link_hash_entry *) h)->dyn_relocs; |
19e08130 AM |
6193 | p = *head; |
6194 | if (p == NULL || p->sec != sec) | |
6195 | { | |
6196 | p = bfd_alloc (htab->elf.dynobj, sizeof *p); | |
6197 | if (p == NULL) | |
6198 | return FALSE; | |
6199 | p->next = *head; | |
6200 | *head = p; | |
6201 | p->sec = sec; | |
6202 | p->count = 0; | |
6203 | p->pc_count = 0; | |
6204 | } | |
6205 | p->count += 1; | |
6206 | if (!must_be_dyn_reloc (info, r_type)) | |
6207 | p->pc_count += 1; | |
65f38f15 AM |
6208 | } |
6209 | else | |
6210 | { | |
ec338859 AM |
6211 | /* Track dynamic relocs needed for local syms too. |
6212 | We really need local syms available to do this | |
6213 | easily. Oh well. */ | |
19e08130 AM |
6214 | struct ppc_dyn_relocs *p; |
6215 | struct ppc_dyn_relocs **head; | |
6216 | bfd_boolean is_ifunc; | |
ec338859 | 6217 | asection *s; |
6edfbbad | 6218 | void *vpp; |
87d72d41 | 6219 | Elf_Internal_Sym *isym; |
6edfbbad | 6220 | |
87d72d41 AM |
6221 | isym = bfd_sym_from_r_symndx (&htab->sym_cache, |
6222 | abfd, r_symndx); | |
6223 | if (isym == NULL) | |
b34976b6 | 6224 | return FALSE; |
ec338859 | 6225 | |
87d72d41 AM |
6226 | s = bfd_section_from_elf_index (abfd, isym->st_shndx); |
6227 | if (s == NULL) | |
6228 | s = sec; | |
6229 | ||
6edfbbad | 6230 | vpp = &elf_section_data (s)->local_dynrel; |
19e08130 AM |
6231 | head = (struct ppc_dyn_relocs **) vpp; |
6232 | is_ifunc = ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC; | |
6233 | p = *head; | |
6234 | if (p != NULL && p->sec == sec && p->ifunc != is_ifunc) | |
6235 | p = p->next; | |
6236 | if (p == NULL || p->sec != sec || p->ifunc != is_ifunc) | |
6237 | { | |
6238 | p = bfd_alloc (htab->elf.dynobj, sizeof *p); | |
6239 | if (p == NULL) | |
6240 | return FALSE; | |
6241 | p->next = *head; | |
6242 | *head = p; | |
6243 | p->sec = sec; | |
6244 | p->ifunc = is_ifunc; | |
6245 | p->count = 0; | |
6246 | } | |
6247 | p->count += 1; | |
ec338859 | 6248 | } |
65f38f15 | 6249 | } |
5bd4f169 | 6250 | break; |
65f38f15 AM |
6251 | |
6252 | default: | |
96e0dda4 | 6253 | break; |
5bd4f169 AM |
6254 | } |
6255 | } | |
6256 | ||
b34976b6 | 6257 | return TRUE; |
5bd4f169 AM |
6258 | } |
6259 | ||
ee67d69a AM |
6260 | /* Merge backend specific data from an object file to the output |
6261 | object file when linking. */ | |
6262 | ||
6263 | static bfd_boolean | |
50e03d47 | 6264 | ppc64_elf_merge_private_bfd_data (bfd *ibfd, struct bfd_link_info *info) |
ee67d69a | 6265 | { |
50e03d47 | 6266 | bfd *obfd = info->output_bfd; |
ee67d69a AM |
6267 | unsigned long iflags, oflags; |
6268 | ||
6269 | if ((ibfd->flags & BFD_LINKER_CREATED) != 0) | |
6270 | return TRUE; | |
6271 | ||
6272 | if (!is_ppc64_elf (ibfd) || !is_ppc64_elf (obfd)) | |
6273 | return TRUE; | |
6274 | ||
50e03d47 | 6275 | if (!_bfd_generic_verify_endian_match (ibfd, info)) |
ee67d69a AM |
6276 | return FALSE; |
6277 | ||
6278 | iflags = elf_elfheader (ibfd)->e_flags; | |
6279 | oflags = elf_elfheader (obfd)->e_flags; | |
6280 | ||
f6c7c3e8 | 6281 | if (iflags & ~EF_PPC64_ABI) |
ee67d69a | 6282 | { |
4eca0228 | 6283 | _bfd_error_handler |
695344c0 | 6284 | /* xgettext:c-format */ |
871b3ab2 | 6285 | (_("%pB uses unknown e_flags 0x%lx"), ibfd, iflags); |
ee67d69a AM |
6286 | bfd_set_error (bfd_error_bad_value); |
6287 | return FALSE; | |
6288 | } | |
f6c7c3e8 | 6289 | else if (iflags != oflags && iflags != 0) |
ee67d69a | 6290 | { |
4eca0228 | 6291 | _bfd_error_handler |
695344c0 | 6292 | /* xgettext:c-format */ |
871b3ab2 | 6293 | (_("%pB: ABI version %ld is not compatible with ABI version %ld output"), |
ee67d69a AM |
6294 | ibfd, iflags, oflags); |
6295 | bfd_set_error (bfd_error_bad_value); | |
6296 | return FALSE; | |
6297 | } | |
6298 | ||
4a91d0ba AM |
6299 | if (!_bfd_elf_ppc_merge_fp_attributes (ibfd, info)) |
6300 | return FALSE; | |
005d79fd | 6301 | |
ee67d69a | 6302 | /* Merge Tag_compatibility attributes and any common GNU ones. */ |
8d2c8c3d | 6303 | return _bfd_elf_merge_object_attributes (ibfd, info); |
ee67d69a AM |
6304 | } |
6305 | ||
6306 | static bfd_boolean | |
6307 | ppc64_elf_print_private_bfd_data (bfd *abfd, void *ptr) | |
6308 | { | |
6309 | /* Print normal ELF private data. */ | |
6310 | _bfd_elf_print_private_bfd_data (abfd, ptr); | |
6311 | ||
6312 | if (elf_elfheader (abfd)->e_flags != 0) | |
6313 | { | |
6314 | FILE *file = ptr; | |
6315 | ||
ee67d69a AM |
6316 | fprintf (file, _("private flags = 0x%lx:"), |
6317 | elf_elfheader (abfd)->e_flags); | |
6318 | ||
6319 | if ((elf_elfheader (abfd)->e_flags & EF_PPC64_ABI) != 0) | |
6320 | fprintf (file, _(" [abiv%ld]"), | |
6321 | elf_elfheader (abfd)->e_flags & EF_PPC64_ABI); | |
6322 | fputc ('\n', file); | |
6323 | } | |
6324 | ||
6325 | return TRUE; | |
6326 | } | |
6327 | ||
8387904d | 6328 | /* OFFSET in OPD_SEC specifies a function descriptor. Return the address |
b53dfeb2 AM |
6329 | of the code entry point, and its section, which must be in the same |
6330 | object as OPD_SEC. Returns (bfd_vma) -1 on error. */ | |
8387904d AM |
6331 | |
6332 | static bfd_vma | |
6333 | opd_entry_value (asection *opd_sec, | |
6334 | bfd_vma offset, | |
6335 | asection **code_sec, | |
aef36ac1 AM |
6336 | bfd_vma *code_off, |
6337 | bfd_boolean in_code_sec) | |
8387904d AM |
6338 | { |
6339 | bfd *opd_bfd = opd_sec->owner; | |
8860955f | 6340 | Elf_Internal_Rela *relocs; |
8387904d | 6341 | Elf_Internal_Rela *lo, *hi, *look; |
645ea6a9 | 6342 | bfd_vma val; |
8387904d | 6343 | |
9f296da3 AM |
6344 | /* No relocs implies we are linking a --just-symbols object, or looking |
6345 | at a final linked executable with addr2line or somesuch. */ | |
4b85d634 AM |
6346 | if (opd_sec->reloc_count == 0) |
6347 | { | |
729eabd5 | 6348 | bfd_byte *contents = ppc64_elf_tdata (opd_bfd)->opd.contents; |
3b36f7e6 | 6349 | |
729eabd5 AM |
6350 | if (contents == NULL) |
6351 | { | |
6352 | if (!bfd_malloc_and_get_section (opd_bfd, opd_sec, &contents)) | |
6353 | return (bfd_vma) -1; | |
6354 | ppc64_elf_tdata (opd_bfd)->opd.contents = contents; | |
6355 | } | |
ee1e4ede | 6356 | |
dbb3fbbb | 6357 | /* PR 17512: file: 64b9dfbb. */ |
451dfd38 | 6358 | if (offset + 7 >= opd_sec->size || offset + 7 < offset) |
dbb3fbbb NC |
6359 | return (bfd_vma) -1; |
6360 | ||
729eabd5 | 6361 | val = bfd_get_64 (opd_bfd, contents + offset); |
aef36ac1 AM |
6362 | if (code_sec != NULL) |
6363 | { | |
6364 | asection *sec, *likely = NULL; | |
ee1e4ede | 6365 | |
aef36ac1 | 6366 | if (in_code_sec) |
4b85d634 | 6367 | { |
aef36ac1 AM |
6368 | sec = *code_sec; |
6369 | if (sec->vma <= val | |
6370 | && val < sec->vma + sec->size) | |
6371 | likely = sec; | |
6372 | else | |
6373 | val = -1; | |
6374 | } | |
6375 | else | |
6376 | for (sec = opd_bfd->sections; sec != NULL; sec = sec->next) | |
6377 | if (sec->vma <= val | |
6378 | && (sec->flags & SEC_LOAD) != 0 | |
6379 | && (sec->flags & SEC_ALLOC) != 0) | |
6380 | likely = sec; | |
6381 | if (likely != NULL) | |
6382 | { | |
6383 | *code_sec = likely; | |
6384 | if (code_off != NULL) | |
6385 | *code_off = val - likely->vma; | |
4b85d634 AM |
6386 | } |
6387 | } | |
aef36ac1 | 6388 | return val; |
4b85d634 AM |
6389 | } |
6390 | ||
0c8d6e5c | 6391 | BFD_ASSERT (is_ppc64_elf (opd_bfd)); |
0ffa91dd | 6392 | |
729eabd5 | 6393 | relocs = ppc64_elf_tdata (opd_bfd)->opd.relocs; |
8860955f AM |
6394 | if (relocs == NULL) |
6395 | relocs = _bfd_elf_link_read_relocs (opd_bfd, opd_sec, NULL, NULL, TRUE); | |
877a8638 NC |
6396 | /* PR 17512: file: df8e1fd6. */ |
6397 | if (relocs == NULL) | |
6398 | return (bfd_vma) -1; | |
645ea6a9 | 6399 | |
8387904d | 6400 | /* Go find the opd reloc at the sym address. */ |
8860955f | 6401 | lo = relocs; |
8387904d | 6402 | hi = lo + opd_sec->reloc_count - 1; /* ignore last reloc */ |
645ea6a9 | 6403 | val = (bfd_vma) -1; |
8387904d AM |
6404 | while (lo < hi) |
6405 | { | |
6406 | look = lo + (hi - lo) / 2; | |
6407 | if (look->r_offset < offset) | |
6408 | lo = look + 1; | |
6409 | else if (look->r_offset > offset) | |
6410 | hi = look; | |
6411 | else | |
6412 | { | |
0ffa91dd NC |
6413 | Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (opd_bfd); |
6414 | ||
8387904d AM |
6415 | if (ELF64_R_TYPE (look->r_info) == R_PPC64_ADDR64 |
6416 | && ELF64_R_TYPE ((look + 1)->r_info) == R_PPC64_TOC) | |
6417 | { | |
6418 | unsigned long symndx = ELF64_R_SYM (look->r_info); | |
b53dfeb2 | 6419 | asection *sec = NULL; |
8387904d | 6420 | |
b53dfeb2 AM |
6421 | if (symndx >= symtab_hdr->sh_info |
6422 | && elf_sym_hashes (opd_bfd) != NULL) | |
8387904d AM |
6423 | { |
6424 | struct elf_link_hash_entry **sym_hashes; | |
6425 | struct elf_link_hash_entry *rh; | |
6426 | ||
6427 | sym_hashes = elf_sym_hashes (opd_bfd); | |
6428 | rh = sym_hashes[symndx - symtab_hdr->sh_info]; | |
128205bb AM |
6429 | if (rh != NULL) |
6430 | { | |
6431 | rh = elf_follow_link (rh); | |
bb854a36 AM |
6432 | if (rh->root.type != bfd_link_hash_defined |
6433 | && rh->root.type != bfd_link_hash_defweak) | |
6434 | break; | |
6435 | if (rh->root.u.def.section->owner == opd_bfd) | |
b53dfeb2 | 6436 | { |
bb854a36 AM |
6437 | val = rh->root.u.def.value; |
6438 | sec = rh->root.u.def.section; | |
b53dfeb2 AM |
6439 | } |
6440 | } | |
6441 | } | |
6442 | ||
6443 | if (sec == NULL) | |
6444 | { | |
6445 | Elf_Internal_Sym *sym; | |
6446 | ||
6447 | if (symndx < symtab_hdr->sh_info) | |
6448 | { | |
6449 | sym = (Elf_Internal_Sym *) symtab_hdr->contents; | |
6450 | if (sym == NULL) | |
6451 | { | |
6452 | size_t symcnt = symtab_hdr->sh_info; | |
6453 | sym = bfd_elf_get_elf_syms (opd_bfd, symtab_hdr, | |
6454 | symcnt, 0, | |
6455 | NULL, NULL, NULL); | |
6456 | if (sym == NULL) | |
6457 | break; | |
6458 | symtab_hdr->contents = (bfd_byte *) sym; | |
6459 | } | |
6460 | sym += symndx; | |
128205bb AM |
6461 | } |
6462 | else | |
6463 | { | |
b53dfeb2 AM |
6464 | sym = bfd_elf_get_elf_syms (opd_bfd, symtab_hdr, |
6465 | 1, symndx, | |
6466 | NULL, NULL, NULL); | |
128205bb AM |
6467 | if (sym == NULL) |
6468 | break; | |
128205bb | 6469 | } |
b53dfeb2 AM |
6470 | sec = bfd_section_from_elf_index (opd_bfd, sym->st_shndx); |
6471 | if (sec == NULL) | |
6472 | break; | |
6473 | BFD_ASSERT ((sec->flags & SEC_MERGE) == 0); | |
6474 | val = sym->st_value; | |
8387904d | 6475 | } |
b53dfeb2 | 6476 | |
8387904d AM |
6477 | val += look->r_addend; |
6478 | if (code_off != NULL) | |
6479 | *code_off = val; | |
6480 | if (code_sec != NULL) | |
aef36ac1 AM |
6481 | { |
6482 | if (in_code_sec && *code_sec != sec) | |
6483 | return -1; | |
6484 | else | |
6485 | *code_sec = sec; | |
6486 | } | |
b53dfeb2 | 6487 | if (sec->output_section != NULL) |
8387904d | 6488 | val += sec->output_section->vma + sec->output_offset; |
8387904d AM |
6489 | } |
6490 | break; | |
6491 | } | |
6492 | } | |
645ea6a9 | 6493 | |
645ea6a9 | 6494 | return val; |
8387904d AM |
6495 | } |
6496 | ||
aef36ac1 AM |
6497 | /* If the ELF symbol SYM might be a function in SEC, return the |
6498 | function size and set *CODE_OFF to the function's entry point, | |
6499 | otherwise return zero. */ | |
9f296da3 | 6500 | |
aef36ac1 AM |
6501 | static bfd_size_type |
6502 | ppc64_elf_maybe_function_sym (const asymbol *sym, asection *sec, | |
6503 | bfd_vma *code_off) | |
9f296da3 | 6504 | { |
aef36ac1 AM |
6505 | bfd_size_type size; |
6506 | ||
6507 | if ((sym->flags & (BSF_SECTION_SYM | BSF_FILE | BSF_OBJECT | |
6508 | | BSF_THREAD_LOCAL | BSF_RELC | BSF_SRELC)) != 0) | |
6509 | return 0; | |
6510 | ||
6511 | size = 0; | |
6512 | if (!(sym->flags & BSF_SYNTHETIC)) | |
6513 | size = ((elf_symbol_type *) sym)->internal_elf_sym.st_size; | |
6514 | ||
6515 | if (strcmp (sym->section->name, ".opd") == 0) | |
9f296da3 | 6516 | { |
b07bca4e AM |
6517 | struct _opd_sec_data *opd = get_opd_info (sym->section); |
6518 | bfd_vma symval = sym->value; | |
6519 | ||
6520 | if (opd != NULL | |
6521 | && opd->adjust != NULL | |
6522 | && elf_section_data (sym->section)->relocs != NULL) | |
6523 | { | |
6524 | /* opd_entry_value will use cached relocs that have been | |
6525 | adjusted, but with raw symbols. That means both local | |
6526 | and global symbols need adjusting. */ | |
6527 | long adjust = opd->adjust[OPD_NDX (symval)]; | |
6528 | if (adjust == -1) | |
6529 | return 0; | |
6530 | symval += adjust; | |
6531 | } | |
6532 | ||
6533 | if (opd_entry_value (sym->section, symval, | |
aef36ac1 AM |
6534 | &sec, code_off, TRUE) == (bfd_vma) -1) |
6535 | return 0; | |
6536 | /* An old ABI binary with dot-syms has a size of 24 on the .opd | |
6537 | symbol. This size has nothing to do with the code size of the | |
6538 | function, which is what we're supposed to return, but the | |
6539 | code size isn't available without looking up the dot-sym. | |
6540 | However, doing that would be a waste of time particularly | |
6541 | since elf_find_function will look at the dot-sym anyway. | |
6542 | Now, elf_find_function will keep the largest size of any | |
6543 | function sym found at the code address of interest, so return | |
6544 | 1 here to avoid it incorrectly caching a larger function size | |
6545 | for a small function. This does mean we return the wrong | |
6546 | size for a new-ABI function of size 24, but all that does is | |
6547 | disable caching for such functions. */ | |
6548 | if (size == 24) | |
6549 | size = 1; | |
9f296da3 | 6550 | } |
aef36ac1 AM |
6551 | else |
6552 | { | |
6553 | if (sym->section != sec) | |
6554 | return 0; | |
6555 | *code_off = sym->value; | |
6556 | } | |
6557 | if (size == 0) | |
6558 | size = 1; | |
6559 | return size; | |
9f296da3 AM |
6560 | } |
6561 | ||
f378ab09 AM |
6562 | /* Return true if symbol is a strong function defined in an ELFv2 |
6563 | object with st_other localentry bits of zero, ie. its local entry | |
6564 | point coincides with its global entry point. */ | |
6565 | ||
6566 | static bfd_boolean | |
6567 | is_elfv2_localentry0 (struct elf_link_hash_entry *h) | |
6568 | { | |
6569 | return (h != NULL | |
6570 | && h->type == STT_FUNC | |
6571 | && h->root.type == bfd_link_hash_defined | |
6572 | && (STO_PPC64_LOCAL_MASK & h->other) == 0 | |
8b5f1ed8 | 6573 | && !((struct ppc_link_hash_entry *) h)->non_zero_localentry |
f378ab09 AM |
6574 | && is_ppc64_elf (h->root.u.def.section->owner) |
6575 | && abiversion (h->root.u.def.section->owner) >= 2); | |
6576 | } | |
6577 | ||
854b41e7 AM |
6578 | /* Return true if symbol is defined in a regular object file. */ |
6579 | ||
6580 | static bfd_boolean | |
6581 | is_static_defined (struct elf_link_hash_entry *h) | |
6582 | { | |
6583 | return ((h->root.type == bfd_link_hash_defined | |
6584 | || h->root.type == bfd_link_hash_defweak) | |
6585 | && h->root.u.def.section != NULL | |
6586 | && h->root.u.def.section->output_section != NULL); | |
6587 | } | |
6588 | ||
b31867b6 AM |
6589 | /* If FDH is a function descriptor symbol, return the associated code |
6590 | entry symbol if it is defined. Return NULL otherwise. */ | |
6591 | ||
6592 | static struct ppc_link_hash_entry * | |
6593 | defined_code_entry (struct ppc_link_hash_entry *fdh) | |
6594 | { | |
6595 | if (fdh->is_func_descriptor) | |
6596 | { | |
6597 | struct ppc_link_hash_entry *fh = ppc_follow_link (fdh->oh); | |
6598 | if (fh->elf.root.type == bfd_link_hash_defined | |
6599 | || fh->elf.root.type == bfd_link_hash_defweak) | |
6600 | return fh; | |
6601 | } | |
6602 | return NULL; | |
6603 | } | |
6604 | ||
6605 | /* If FH is a function code entry symbol, return the associated | |
6606 | function descriptor symbol if it is defined. Return NULL otherwise. */ | |
6607 | ||
6608 | static struct ppc_link_hash_entry * | |
6609 | defined_func_desc (struct ppc_link_hash_entry *fh) | |
6610 | { | |
6611 | if (fh->oh != NULL | |
6612 | && fh->oh->is_func_descriptor) | |
6613 | { | |
6614 | struct ppc_link_hash_entry *fdh = ppc_follow_link (fh->oh); | |
6615 | if (fdh->elf.root.type == bfd_link_hash_defined | |
6616 | || fdh->elf.root.type == bfd_link_hash_defweak) | |
6617 | return fdh; | |
6618 | } | |
6619 | return NULL; | |
6620 | } | |
6621 | ||
8c5b4e52 AM |
6622 | static bfd_boolean func_desc_adjust (struct elf_link_hash_entry *, void *); |
6623 | ||
6624 | /* Garbage collect sections, after first dealing with dot-symbols. */ | |
6625 | ||
6626 | static bfd_boolean | |
6627 | ppc64_elf_gc_sections (bfd *abfd, struct bfd_link_info *info) | |
6628 | { | |
6629 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
6630 | ||
6631 | if (htab != NULL && htab->need_func_desc_adj) | |
6632 | { | |
6633 | elf_link_hash_traverse (&htab->elf, func_desc_adjust, info); | |
6634 | htab->need_func_desc_adj = 0; | |
6635 | } | |
6636 | return bfd_elf_gc_sections (abfd, info); | |
6637 | } | |
6638 | ||
74f0fb50 AM |
6639 | /* Mark all our entry sym sections, both opd and code section. */ |
6640 | ||
6641 | static void | |
6642 | ppc64_elf_gc_keep (struct bfd_link_info *info) | |
6643 | { | |
6644 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
6645 | struct bfd_sym_chain *sym; | |
6646 | ||
4dfe6ac6 NC |
6647 | if (htab == NULL) |
6648 | return; | |
6649 | ||
74f0fb50 AM |
6650 | for (sym = info->gc_sym_list; sym != NULL; sym = sym->next) |
6651 | { | |
b31867b6 | 6652 | struct ppc_link_hash_entry *eh, *fh; |
74f0fb50 AM |
6653 | asection *sec; |
6654 | ||
6655 | eh = (struct ppc_link_hash_entry *) | |
b31867b6 | 6656 | elf_link_hash_lookup (&htab->elf, sym->name, FALSE, FALSE, TRUE); |
74f0fb50 AM |
6657 | if (eh == NULL) |
6658 | continue; | |
6659 | if (eh->elf.root.type != bfd_link_hash_defined | |
6660 | && eh->elf.root.type != bfd_link_hash_defweak) | |
6661 | continue; | |
6662 | ||
b31867b6 AM |
6663 | fh = defined_code_entry (eh); |
6664 | if (fh != NULL) | |
74f0fb50 | 6665 | { |
b31867b6 | 6666 | sec = fh->elf.root.u.def.section; |
74f0fb50 AM |
6667 | sec->flags |= SEC_KEEP; |
6668 | } | |
6669 | else if (get_opd_info (eh->elf.root.u.def.section) != NULL | |
6670 | && opd_entry_value (eh->elf.root.u.def.section, | |
6671 | eh->elf.root.u.def.value, | |
aef36ac1 | 6672 | &sec, NULL, FALSE) != (bfd_vma) -1) |
74f0fb50 AM |
6673 | sec->flags |= SEC_KEEP; |
6674 | ||
6675 | sec = eh->elf.root.u.def.section; | |
6676 | sec->flags |= SEC_KEEP; | |
6677 | } | |
6678 | } | |
6679 | ||
64d03ab5 AM |
6680 | /* Mark sections containing dynamically referenced symbols. When |
6681 | building shared libraries, we must assume that any visible symbol is | |
6682 | referenced. */ | |
6683 | ||
6684 | static bfd_boolean | |
6685 | ppc64_elf_gc_mark_dynamic_ref (struct elf_link_hash_entry *h, void *inf) | |
6686 | { | |
6687 | struct bfd_link_info *info = (struct bfd_link_info *) inf; | |
6688 | struct ppc_link_hash_entry *eh = (struct ppc_link_hash_entry *) h; | |
b31867b6 | 6689 | struct ppc_link_hash_entry *fdh; |
b407645f | 6690 | struct bfd_elf_dynamic_list *d = info->dynamic_list; |
64d03ab5 | 6691 | |
64d03ab5 | 6692 | /* Dynamic linking info is on the func descriptor sym. */ |
b31867b6 AM |
6693 | fdh = defined_func_desc (eh); |
6694 | if (fdh != NULL) | |
6695 | eh = fdh; | |
64d03ab5 AM |
6696 | |
6697 | if ((eh->elf.root.type == bfd_link_hash_defined | |
6698 | || eh->elf.root.type == bfd_link_hash_defweak) | |
87e79a65 | 6699 | && ((eh->elf.ref_dynamic && !eh->elf.forced_local) |
1c9177d9 | 6700 | || ((eh->elf.def_regular || ELF_COMMON_DEF_P (&eh->elf)) |
64d03ab5 | 6701 | && ELF_ST_VISIBILITY (eh->elf.other) != STV_INTERNAL |
4c58e0d8 | 6702 | && ELF_ST_VISIBILITY (eh->elf.other) != STV_HIDDEN |
0e1862bb | 6703 | && (!bfd_link_executable (info) |
e278ae05 | 6704 | || info->gc_keep_exported |
b407645f AM |
6705 | || info->export_dynamic |
6706 | || (eh->elf.dynamic | |
6707 | && d != NULL | |
2cdcc330 AM |
6708 | && (*d->match) (&d->head, NULL, |
6709 | eh->elf.root.root.string))) | |
e278ae05 | 6710 | && (eh->elf.versioned >= versioned |
4c58e0d8 AM |
6711 | || !bfd_hide_sym_by_version (info->version_info, |
6712 | eh->elf.root.root.string))))) | |
64d03ab5 AM |
6713 | { |
6714 | asection *code_sec; | |
b31867b6 | 6715 | struct ppc_link_hash_entry *fh; |
64d03ab5 AM |
6716 | |
6717 | eh->elf.root.u.def.section->flags |= SEC_KEEP; | |
6718 | ||
6719 | /* Function descriptor syms cause the associated | |
6720 | function code sym section to be marked. */ | |
b31867b6 AM |
6721 | fh = defined_code_entry (eh); |
6722 | if (fh != NULL) | |
6723 | { | |
6724 | code_sec = fh->elf.root.u.def.section; | |
6725 | code_sec->flags |= SEC_KEEP; | |
6726 | } | |
64d03ab5 AM |
6727 | else if (get_opd_info (eh->elf.root.u.def.section) != NULL |
6728 | && opd_entry_value (eh->elf.root.u.def.section, | |
6729 | eh->elf.root.u.def.value, | |
aef36ac1 | 6730 | &code_sec, NULL, FALSE) != (bfd_vma) -1) |
64d03ab5 AM |
6731 | code_sec->flags |= SEC_KEEP; |
6732 | } | |
6733 | ||
6734 | return TRUE; | |
6735 | } | |
6736 | ||
5bd4f169 AM |
6737 | /* Return the section that should be marked against GC for a given |
6738 | relocation. */ | |
6739 | ||
6740 | static asection * | |
4ce794b7 | 6741 | ppc64_elf_gc_mark_hook (asection *sec, |
fb34365b | 6742 | struct bfd_link_info *info, |
4ce794b7 AM |
6743 | Elf_Internal_Rela *rel, |
6744 | struct elf_link_hash_entry *h, | |
6745 | Elf_Internal_Sym *sym) | |
5bd4f169 | 6746 | { |
ccfa59ea AM |
6747 | asection *rsec; |
6748 | ||
ccfa59ea AM |
6749 | /* Syms return NULL if we're marking .opd, so we avoid marking all |
6750 | function sections, as all functions are referenced in .opd. */ | |
6751 | rsec = NULL; | |
6752 | if (get_opd_info (sec) != NULL) | |
6753 | return rsec; | |
1e2f5b6e | 6754 | |
5bd4f169 AM |
6755 | if (h != NULL) |
6756 | { | |
04c9666a | 6757 | enum elf_ppc64_reloc_type r_type; |
b31867b6 | 6758 | struct ppc_link_hash_entry *eh, *fh, *fdh; |
a33d1f77 | 6759 | |
4ce794b7 | 6760 | r_type = ELF64_R_TYPE (rel->r_info); |
a33d1f77 | 6761 | switch (r_type) |
5bd4f169 AM |
6762 | { |
6763 | case R_PPC64_GNU_VTINHERIT: | |
6764 | case R_PPC64_GNU_VTENTRY: | |
6765 | break; | |
6766 | ||
6767 | default: | |
6768 | switch (h->root.type) | |
6769 | { | |
6770 | case bfd_link_hash_defined: | |
6771 | case bfd_link_hash_defweak: | |
ccfa59ea | 6772 | eh = (struct ppc_link_hash_entry *) h; |
b31867b6 AM |
6773 | fdh = defined_func_desc (eh); |
6774 | if (fdh != NULL) | |
8c5b4e52 AM |
6775 | { |
6776 | /* -mcall-aixdesc code references the dot-symbol on | |
6777 | a call reloc. Mark the function descriptor too | |
6778 | against garbage collection. */ | |
6779 | fdh->elf.mark = 1; | |
60d67dc8 AM |
6780 | if (fdh->elf.is_weakalias) |
6781 | weakdef (&fdh->elf)->mark = 1; | |
8c5b4e52 AM |
6782 | eh = fdh; |
6783 | } | |
1e2f5b6e AM |
6784 | |
6785 | /* Function descriptor syms cause the associated | |
6786 | function code sym section to be marked. */ | |
b31867b6 AM |
6787 | fh = defined_code_entry (eh); |
6788 | if (fh != NULL) | |
ccfa59ea AM |
6789 | { |
6790 | /* They also mark their opd section. */ | |
74f0fb50 | 6791 | eh->elf.root.u.def.section->gc_mark = 1; |
ccfa59ea | 6792 | |
b31867b6 | 6793 | rsec = fh->elf.root.u.def.section; |
ccfa59ea | 6794 | } |
8387904d AM |
6795 | else if (get_opd_info (eh->elf.root.u.def.section) != NULL |
6796 | && opd_entry_value (eh->elf.root.u.def.section, | |
6797 | eh->elf.root.u.def.value, | |
aef36ac1 | 6798 | &rsec, NULL, FALSE) != (bfd_vma) -1) |
74f0fb50 | 6799 | eh->elf.root.u.def.section->gc_mark = 1; |
ccfa59ea | 6800 | else |
1e2f5b6e AM |
6801 | rsec = h->root.u.def.section; |
6802 | break; | |
5bd4f169 AM |
6803 | |
6804 | case bfd_link_hash_common: | |
1e2f5b6e AM |
6805 | rsec = h->root.u.c.p->section; |
6806 | break; | |
5bd4f169 AM |
6807 | |
6808 | default: | |
fb34365b | 6809 | return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym); |
5bd4f169 AM |
6810 | } |
6811 | } | |
6812 | } | |
6813 | else | |
6814 | { | |
74f0fb50 | 6815 | struct _opd_sec_data *opd; |
1e2f5b6e AM |
6816 | |
6817 | rsec = bfd_section_from_elf_index (sec->owner, sym->st_shndx); | |
74f0fb50 AM |
6818 | opd = get_opd_info (rsec); |
6819 | if (opd != NULL && opd->func_sec != NULL) | |
ccfa59ea | 6820 | { |
74f0fb50 | 6821 | rsec->gc_mark = 1; |
ccfa59ea | 6822 | |
51aecdc5 | 6823 | rsec = opd->func_sec[OPD_NDX (sym->st_value + rel->r_addend)]; |
ccfa59ea | 6824 | } |
5bd4f169 AM |
6825 | } |
6826 | ||
1e2f5b6e | 6827 | return rsec; |
5bd4f169 AM |
6828 | } |
6829 | ||
deb0e272 AM |
6830 | /* The maximum size of .sfpr. */ |
6831 | #define SFPR_MAX (218*4) | |
6832 | ||
6833 | struct sfpr_def_parms | |
6834 | { | |
699733f6 AM |
6835 | const char name[12]; |
6836 | unsigned char lo, hi; | |
2cdcc330 AM |
6837 | bfd_byte *(*write_ent) (bfd *, bfd_byte *, int); |
6838 | bfd_byte *(*write_tail) (bfd *, bfd_byte *, int); | |
deb0e272 AM |
6839 | }; |
6840 | ||
a4b6fadd AM |
6841 | /* Auto-generate _save*, _rest* functions in .sfpr. |
6842 | If STUB_SEC is non-null, define alias symbols in STUB_SEC | |
6843 | instead. */ | |
deb0e272 | 6844 | |
4dfe6ac6 | 6845 | static bfd_boolean |
a4b6fadd AM |
6846 | sfpr_define (struct bfd_link_info *info, |
6847 | const struct sfpr_def_parms *parm, | |
6848 | asection *stub_sec) | |
deb0e272 AM |
6849 | { |
6850 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
6851 | unsigned int i; | |
6852 | size_t len = strlen (parm->name); | |
6853 | bfd_boolean writing = FALSE; | |
699733f6 | 6854 | char sym[16]; |
deb0e272 | 6855 | |
4dfe6ac6 NC |
6856 | if (htab == NULL) |
6857 | return FALSE; | |
6858 | ||
deb0e272 AM |
6859 | memcpy (sym, parm->name, len); |
6860 | sym[len + 2] = 0; | |
6861 | ||
6862 | for (i = parm->lo; i <= parm->hi; i++) | |
6863 | { | |
a4b6fadd | 6864 | struct ppc_link_hash_entry *h; |
deb0e272 AM |
6865 | |
6866 | sym[len + 0] = i / 10 + '0'; | |
6867 | sym[len + 1] = i % 10 + '0'; | |
a4b6fadd | 6868 | h = (struct ppc_link_hash_entry *) |
b32547cd | 6869 | elf_link_hash_lookup (&htab->elf, sym, writing, TRUE, TRUE); |
a4b6fadd | 6870 | if (stub_sec != NULL) |
deb0e272 | 6871 | { |
a4b6fadd AM |
6872 | if (h != NULL |
6873 | && h->elf.root.type == bfd_link_hash_defined | |
6874 | && h->elf.root.u.def.section == htab->sfpr) | |
6875 | { | |
6876 | struct elf_link_hash_entry *s; | |
6877 | char buf[32]; | |
6878 | sprintf (buf, "%08x.%s", stub_sec->id & 0xffffffff, sym); | |
6879 | s = elf_link_hash_lookup (&htab->elf, buf, TRUE, TRUE, FALSE); | |
6880 | if (s == NULL) | |
6881 | return FALSE; | |
6882 | if (s->root.type == bfd_link_hash_new | |
6883 | || (s->root.type = bfd_link_hash_defined | |
6884 | && s->root.u.def.section == stub_sec)) | |
6885 | { | |
6886 | s->root.type = bfd_link_hash_defined; | |
6887 | s->root.u.def.section = stub_sec; | |
7dda8d3c | 6888 | s->root.u.def.value = (stub_sec->size - htab->sfpr->size |
a4b6fadd AM |
6889 | + h->elf.root.u.def.value); |
6890 | s->ref_regular = 1; | |
6891 | s->def_regular = 1; | |
6892 | s->ref_regular_nonweak = 1; | |
6893 | s->forced_local = 1; | |
6894 | s->non_elf = 0; | |
6895 | s->root.linker_def = 1; | |
6896 | } | |
6897 | } | |
6898 | continue; | |
6899 | } | |
6900 | if (h != NULL) | |
6901 | { | |
6902 | h->save_res = 1; | |
6903 | if (!h->elf.def_regular) | |
deb0e272 | 6904 | { |
a4b6fadd AM |
6905 | h->elf.root.type = bfd_link_hash_defined; |
6906 | h->elf.root.u.def.section = htab->sfpr; | |
6907 | h->elf.root.u.def.value = htab->sfpr->size; | |
6908 | h->elf.type = STT_FUNC; | |
6909 | h->elf.def_regular = 1; | |
b32547cd | 6910 | h->elf.non_elf = 0; |
a4b6fadd AM |
6911 | _bfd_elf_link_hash_hide_symbol (info, &h->elf, TRUE); |
6912 | writing = TRUE; | |
deb0e272 | 6913 | if (htab->sfpr->contents == NULL) |
a4b6fadd | 6914 | { |
2cdcc330 AM |
6915 | htab->sfpr->contents |
6916 | = bfd_alloc (htab->elf.dynobj, SFPR_MAX); | |
a4b6fadd AM |
6917 | if (htab->sfpr->contents == NULL) |
6918 | return FALSE; | |
6919 | } | |
deb0e272 AM |
6920 | } |
6921 | } | |
6922 | if (writing) | |
6923 | { | |
6924 | bfd_byte *p = htab->sfpr->contents + htab->sfpr->size; | |
6925 | if (i != parm->hi) | |
6926 | p = (*parm->write_ent) (htab->elf.dynobj, p, i); | |
6927 | else | |
6928 | p = (*parm->write_tail) (htab->elf.dynobj, p, i); | |
6929 | htab->sfpr->size = p - htab->sfpr->contents; | |
6930 | } | |
6931 | } | |
6932 | ||
6933 | return TRUE; | |
6934 | } | |
6935 | ||
6936 | static bfd_byte * | |
6937 | savegpr0 (bfd *abfd, bfd_byte *p, int r) | |
6938 | { | |
6939 | bfd_put_32 (abfd, STD_R0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p); | |
6940 | return p + 4; | |
6941 | } | |
6942 | ||
6943 | static bfd_byte * | |
6944 | savegpr0_tail (bfd *abfd, bfd_byte *p, int r) | |
6945 | { | |
6946 | p = savegpr0 (abfd, p, r); | |
a078d95a | 6947 | bfd_put_32 (abfd, STD_R0_0R1 + STK_LR, p); |
deb0e272 AM |
6948 | p = p + 4; |
6949 | bfd_put_32 (abfd, BLR, p); | |
6950 | return p + 4; | |
6951 | } | |
6952 | ||
6953 | static bfd_byte * | |
6954 | restgpr0 (bfd *abfd, bfd_byte *p, int r) | |
6955 | { | |
6956 | bfd_put_32 (abfd, LD_R0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p); | |
6957 | return p + 4; | |
6958 | } | |
6959 | ||
6960 | static bfd_byte * | |
6961 | restgpr0_tail (bfd *abfd, bfd_byte *p, int r) | |
6962 | { | |
a078d95a | 6963 | bfd_put_32 (abfd, LD_R0_0R1 + STK_LR, p); |
deb0e272 AM |
6964 | p = p + 4; |
6965 | p = restgpr0 (abfd, p, r); | |
6966 | bfd_put_32 (abfd, MTLR_R0, p); | |
6967 | p = p + 4; | |
6968 | if (r == 29) | |
6969 | { | |
6970 | p = restgpr0 (abfd, p, 30); | |
6971 | p = restgpr0 (abfd, p, 31); | |
6972 | } | |
6973 | bfd_put_32 (abfd, BLR, p); | |
6974 | return p + 4; | |
6975 | } | |
6976 | ||
6977 | static bfd_byte * | |
6978 | savegpr1 (bfd *abfd, bfd_byte *p, int r) | |
6979 | { | |
6980 | bfd_put_32 (abfd, STD_R0_0R12 + (r << 21) + (1 << 16) - (32 - r) * 8, p); | |
6981 | return p + 4; | |
6982 | } | |
6983 | ||
6984 | static bfd_byte * | |
6985 | savegpr1_tail (bfd *abfd, bfd_byte *p, int r) | |
6986 | { | |
6987 | p = savegpr1 (abfd, p, r); | |
6988 | bfd_put_32 (abfd, BLR, p); | |
6989 | return p + 4; | |
6990 | } | |
6991 | ||
6992 | static bfd_byte * | |
6993 | restgpr1 (bfd *abfd, bfd_byte *p, int r) | |
6994 | { | |
6995 | bfd_put_32 (abfd, LD_R0_0R12 + (r << 21) + (1 << 16) - (32 - r) * 8, p); | |
6996 | return p + 4; | |
6997 | } | |
6998 | ||
6999 | static bfd_byte * | |
7000 | restgpr1_tail (bfd *abfd, bfd_byte *p, int r) | |
7001 | { | |
7002 | p = restgpr1 (abfd, p, r); | |
7003 | bfd_put_32 (abfd, BLR, p); | |
7004 | return p + 4; | |
7005 | } | |
7006 | ||
7007 | static bfd_byte * | |
7008 | savefpr (bfd *abfd, bfd_byte *p, int r) | |
7009 | { | |
7010 | bfd_put_32 (abfd, STFD_FR0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p); | |
7011 | return p + 4; | |
7012 | } | |
7013 | ||
7014 | static bfd_byte * | |
7015 | savefpr0_tail (bfd *abfd, bfd_byte *p, int r) | |
7016 | { | |
7017 | p = savefpr (abfd, p, r); | |
a078d95a | 7018 | bfd_put_32 (abfd, STD_R0_0R1 + STK_LR, p); |
deb0e272 AM |
7019 | p = p + 4; |
7020 | bfd_put_32 (abfd, BLR, p); | |
7021 | return p + 4; | |
7022 | } | |
7023 | ||
7024 | static bfd_byte * | |
7025 | restfpr (bfd *abfd, bfd_byte *p, int r) | |
7026 | { | |
7027 | bfd_put_32 (abfd, LFD_FR0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p); | |
7028 | return p + 4; | |
7029 | } | |
7030 | ||
7031 | static bfd_byte * | |
7032 | restfpr0_tail (bfd *abfd, bfd_byte *p, int r) | |
7033 | { | |
a078d95a | 7034 | bfd_put_32 (abfd, LD_R0_0R1 + STK_LR, p); |
deb0e272 AM |
7035 | p = p + 4; |
7036 | p = restfpr (abfd, p, r); | |
7037 | bfd_put_32 (abfd, MTLR_R0, p); | |
7038 | p = p + 4; | |
7039 | if (r == 29) | |
7040 | { | |
7041 | p = restfpr (abfd, p, 30); | |
7042 | p = restfpr (abfd, p, 31); | |
7043 | } | |
7044 | bfd_put_32 (abfd, BLR, p); | |
7045 | return p + 4; | |
7046 | } | |
7047 | ||
7048 | static bfd_byte * | |
7049 | savefpr1_tail (bfd *abfd, bfd_byte *p, int r) | |
7050 | { | |
7051 | p = savefpr (abfd, p, r); | |
7052 | bfd_put_32 (abfd, BLR, p); | |
7053 | return p + 4; | |
7054 | } | |
7055 | ||
7056 | static bfd_byte * | |
7057 | restfpr1_tail (bfd *abfd, bfd_byte *p, int r) | |
7058 | { | |
7059 | p = restfpr (abfd, p, r); | |
7060 | bfd_put_32 (abfd, BLR, p); | |
7061 | return p + 4; | |
7062 | } | |
7063 | ||
7064 | static bfd_byte * | |
7065 | savevr (bfd *abfd, bfd_byte *p, int r) | |
7066 | { | |
7067 | bfd_put_32 (abfd, LI_R12_0 + (1 << 16) - (32 - r) * 16, p); | |
7068 | p = p + 4; | |
7069 | bfd_put_32 (abfd, STVX_VR0_R12_R0 + (r << 21), p); | |
7070 | return p + 4; | |
7071 | } | |
7072 | ||
7073 | static bfd_byte * | |
7074 | savevr_tail (bfd *abfd, bfd_byte *p, int r) | |
7075 | { | |
7076 | p = savevr (abfd, p, r); | |
7077 | bfd_put_32 (abfd, BLR, p); | |
7078 | return p + 4; | |
7079 | } | |
7080 | ||
7081 | static bfd_byte * | |
7082 | restvr (bfd *abfd, bfd_byte *p, int r) | |
7083 | { | |
7084 | bfd_put_32 (abfd, LI_R12_0 + (1 << 16) - (32 - r) * 16, p); | |
7085 | p = p + 4; | |
7086 | bfd_put_32 (abfd, LVX_VR0_R12_R0 + (r << 21), p); | |
7087 | return p + 4; | |
7088 | } | |
7089 | ||
7090 | static bfd_byte * | |
7091 | restvr_tail (bfd *abfd, bfd_byte *p, int r) | |
7092 | { | |
7093 | p = restvr (abfd, p, r); | |
7094 | bfd_put_32 (abfd, BLR, p); | |
7095 | return p + 4; | |
7096 | } | |
7097 | ||
e86ce104 AM |
7098 | /* Called via elf_link_hash_traverse to transfer dynamic linking |
7099 | information on function code symbol entries to their corresponding | |
7100 | function descriptor symbol entries. */ | |
deb0e272 | 7101 | |
b34976b6 | 7102 | static bfd_boolean |
4ce794b7 | 7103 | func_desc_adjust (struct elf_link_hash_entry *h, void *inf) |
5bd4f169 | 7104 | { |
e86ce104 | 7105 | struct bfd_link_info *info; |
65f38f15 | 7106 | struct ppc_link_hash_table *htab; |
50bc7936 AM |
7107 | struct ppc_link_hash_entry *fh; |
7108 | struct ppc_link_hash_entry *fdh; | |
7109 | bfd_boolean force_local; | |
5bd4f169 | 7110 | |
50bc7936 AM |
7111 | fh = (struct ppc_link_hash_entry *) h; |
7112 | if (fh->elf.root.type == bfd_link_hash_indirect) | |
b34976b6 | 7113 | return TRUE; |
e86ce104 | 7114 | |
8c5b4e52 AM |
7115 | if (!fh->is_func) |
7116 | return TRUE; | |
7117 | ||
7118 | if (fh->elf.root.root.string[0] != '.' | |
7119 | || fh->elf.root.root.string[1] == '\0') | |
7120 | return TRUE; | |
7121 | ||
4ce794b7 | 7122 | info = inf; |
65f38f15 | 7123 | htab = ppc_hash_table (info); |
4dfe6ac6 NC |
7124 | if (htab == NULL) |
7125 | return FALSE; | |
5bd4f169 | 7126 | |
8c5b4e52 AM |
7127 | /* Find the corresponding function descriptor symbol. */ |
7128 | fdh = lookup_fdh (fh, htab); | |
7129 | ||
c09bdfe5 AM |
7130 | /* Resolve undefined references to dot-symbols as the value |
7131 | in the function descriptor, if we have one in a regular object. | |
7132 | This is to satisfy cases like ".quad .foo". Calls to functions | |
7133 | in dynamic objects are handled elsewhere. */ | |
8c5b4e52 AM |
7134 | if ((fh->elf.root.type == bfd_link_hash_undefined |
7135 | || fh->elf.root.type == bfd_link_hash_undefweak) | |
7136 | && (fdh->elf.root.type == bfd_link_hash_defined | |
7137 | || fdh->elf.root.type == bfd_link_hash_defweak) | |
b31867b6 AM |
7138 | && get_opd_info (fdh->elf.root.u.def.section) != NULL |
7139 | && opd_entry_value (fdh->elf.root.u.def.section, | |
7140 | fdh->elf.root.u.def.value, | |
c09bdfe5 | 7141 | &fh->elf.root.u.def.section, |
aef36ac1 | 7142 | &fh->elf.root.u.def.value, FALSE) != (bfd_vma) -1) |
c09bdfe5 | 7143 | { |
b31867b6 | 7144 | fh->elf.root.type = fdh->elf.root.type; |
f5385ebf | 7145 | fh->elf.forced_local = 1; |
b31867b6 AM |
7146 | fh->elf.def_regular = fdh->elf.def_regular; |
7147 | fh->elf.def_dynamic = fdh->elf.def_dynamic; | |
c09bdfe5 AM |
7148 | } |
7149 | ||
8c5b4e52 AM |
7150 | if (!fh->elf.dynamic) |
7151 | { | |
7152 | struct plt_entry *ent; | |
5bd4f169 | 7153 | |
8c5b4e52 AM |
7154 | for (ent = fh->elf.plt.plist; ent != NULL; ent = ent->next) |
7155 | if (ent->plt.refcount > 0) | |
7156 | break; | |
7157 | if (ent == NULL) | |
7158 | return TRUE; | |
7159 | } | |
5bd4f169 | 7160 | |
8c5b4e52 | 7161 | /* Create a descriptor as undefined if necessary. */ |
50bc7936 | 7162 | if (fdh == NULL |
0e1862bb | 7163 | && !bfd_link_executable (info) |
50bc7936 AM |
7164 | && (fh->elf.root.type == bfd_link_hash_undefined |
7165 | || fh->elf.root.type == bfd_link_hash_undefweak)) | |
7166 | { | |
908b32fc | 7167 | fdh = make_fdh (info, fh); |
bb700d78 AM |
7168 | if (fdh == NULL) |
7169 | return FALSE; | |
50bc7936 | 7170 | } |
648cca2c | 7171 | |
8c5b4e52 | 7172 | /* We can't support overriding of symbols on a fake descriptor. */ |
908b32fc AM |
7173 | if (fdh != NULL |
7174 | && fdh->fake | |
8c5b4e52 AM |
7175 | && (fh->elf.root.type == bfd_link_hash_defined |
7176 | || fh->elf.root.type == bfd_link_hash_defweak)) | |
7177 | _bfd_elf_link_hash_hide_symbol (info, &fdh->elf, TRUE); | |
908b32fc | 7178 | |
8c5b4e52 AM |
7179 | /* Transfer dynamic linking information to the function descriptor. */ |
7180 | if (fdh != NULL) | |
7181 | { | |
f5385ebf AM |
7182 | fdh->elf.ref_regular |= fh->elf.ref_regular; |
7183 | fdh->elf.ref_dynamic |= fh->elf.ref_dynamic; | |
7184 | fdh->elf.ref_regular_nonweak |= fh->elf.ref_regular_nonweak; | |
7185 | fdh->elf.non_got_ref |= fh->elf.non_got_ref; | |
8c5b4e52 AM |
7186 | fdh->elf.dynamic |= fh->elf.dynamic; |
7187 | fdh->elf.needs_plt |= (fh->elf.needs_plt | |
7188 | || fh->elf.type == STT_FUNC | |
7189 | || fh->elf.type == STT_GNU_IFUNC); | |
7190 | move_plt_plist (fh, fdh); | |
7191 | ||
7192 | if (!fdh->elf.forced_local | |
7193 | && fh->elf.dynindx != -1) | |
7194 | if (!bfd_elf_link_record_dynamic_symbol (info, &fdh->elf)) | |
7195 | return FALSE; | |
e86ce104 AM |
7196 | } |
7197 | ||
50bc7936 AM |
7198 | /* Now that the info is on the function descriptor, clear the |
7199 | function code sym info. Any function code syms for which we | |
7200 | don't have a definition in a regular file, we force local. | |
7201 | This prevents a shared library from exporting syms that have | |
7202 | been imported from another library. Function code syms that | |
7203 | are really in the library we must leave global to prevent the | |
7204 | linker dragging in a definition from a static library. */ | |
93f3fa99 AM |
7205 | force_local = (!fh->elf.def_regular |
7206 | || fdh == NULL | |
7207 | || !fdh->elf.def_regular | |
7208 | || fdh->elf.forced_local); | |
50bc7936 AM |
7209 | _bfd_elf_link_hash_hide_symbol (info, &fh->elf, force_local); |
7210 | ||
b34976b6 | 7211 | return TRUE; |
e86ce104 | 7212 | } |
40b8271b | 7213 | |
a4b6fadd AM |
7214 | static const struct sfpr_def_parms save_res_funcs[] = |
7215 | { | |
7216 | { "_savegpr0_", 14, 31, savegpr0, savegpr0_tail }, | |
7217 | { "_restgpr0_", 14, 29, restgpr0, restgpr0_tail }, | |
7218 | { "_restgpr0_", 30, 31, restgpr0, restgpr0_tail }, | |
7219 | { "_savegpr1_", 14, 31, savegpr1, savegpr1_tail }, | |
7220 | { "_restgpr1_", 14, 31, restgpr1, restgpr1_tail }, | |
7221 | { "_savefpr_", 14, 31, savefpr, savefpr0_tail }, | |
7222 | { "_restfpr_", 14, 29, restfpr, restfpr0_tail }, | |
7223 | { "_restfpr_", 30, 31, restfpr, restfpr0_tail }, | |
7224 | { "._savef", 14, 31, savefpr, savefpr1_tail }, | |
7225 | { "._restf", 14, 31, restfpr, restfpr1_tail }, | |
7226 | { "_savevr_", 20, 31, savevr, savevr_tail }, | |
7227 | { "_restvr_", 20, 31, restvr, restvr_tail } | |
7228 | }; | |
7229 | ||
e86ce104 | 7230 | /* Called near the start of bfd_elf_size_dynamic_sections. We use |
82bd7b59 AM |
7231 | this hook to a) provide some gcc support functions, and b) transfer |
7232 | dynamic linking information gathered so far on function code symbol | |
7233 | entries, to their corresponding function descriptor symbol entries. */ | |
deb0e272 | 7234 | |
b34976b6 | 7235 | static bfd_boolean |
4ce794b7 AM |
7236 | ppc64_elf_func_desc_adjust (bfd *obfd ATTRIBUTE_UNUSED, |
7237 | struct bfd_link_info *info) | |
e86ce104 AM |
7238 | { |
7239 | struct ppc_link_hash_table *htab; | |
7240 | ||
7241 | htab = ppc_hash_table (info); | |
4dfe6ac6 NC |
7242 | if (htab == NULL) |
7243 | return FALSE; | |
7244 | ||
b32547cd AM |
7245 | /* Provide any missing _save* and _rest* functions. */ |
7246 | if (htab->sfpr != NULL) | |
7247 | { | |
7248 | unsigned int i; | |
7249 | ||
7250 | htab->sfpr->size = 0; | |
7251 | for (i = 0; i < ARRAY_SIZE (save_res_funcs); i++) | |
7252 | if (!sfpr_define (info, &save_res_funcs[i], NULL)) | |
7253 | return FALSE; | |
7254 | if (htab->sfpr->size == 0) | |
7255 | htab->sfpr->flags |= SEC_EXCLUDE; | |
7256 | } | |
7257 | ||
7258 | if (bfd_link_relocatable (info)) | |
7259 | return TRUE; | |
7260 | ||
7261 | if (htab->elf.hgot != NULL) | |
dba6fa9b AM |
7262 | { |
7263 | _bfd_elf_link_hash_hide_symbol (info, htab->elf.hgot, TRUE); | |
7264 | /* Make .TOC. defined so as to prevent it being made dynamic. | |
7265 | The wrong value here is fixed later in ppc64_elf_set_toc. */ | |
43417696 AM |
7266 | if (!htab->elf.hgot->def_regular |
7267 | || htab->elf.hgot->root.type != bfd_link_hash_defined) | |
7268 | { | |
7269 | htab->elf.hgot->root.type = bfd_link_hash_defined; | |
7270 | htab->elf.hgot->root.u.def.value = 0; | |
7271 | htab->elf.hgot->root.u.def.section = bfd_abs_section_ptr; | |
7272 | htab->elf.hgot->def_regular = 1; | |
7273 | htab->elf.hgot->root.linker_def = 1; | |
7274 | } | |
dba6fa9b | 7275 | htab->elf.hgot->type = STT_OBJECT; |
2cdcc330 AM |
7276 | htab->elf.hgot->other |
7277 | = (htab->elf.hgot->other & ~ELF_ST_VISIBILITY (-1)) | STV_HIDDEN; | |
dba6fa9b | 7278 | } |
c66bb0ee | 7279 | |
8c5b4e52 AM |
7280 | if (htab->need_func_desc_adj) |
7281 | { | |
7282 | elf_link_hash_traverse (&htab->elf, func_desc_adjust, info); | |
7283 | htab->need_func_desc_adj = 0; | |
7284 | } | |
805fc799 | 7285 | |
b34976b6 | 7286 | return TRUE; |
e86ce104 AM |
7287 | } |
7288 | ||
98bbb1b8 | 7289 | /* Find dynamic relocs for H that apply to read-only sections. */ |
a345bc8d | 7290 | |
98bbb1b8 | 7291 | static asection * |
a345bc8d AM |
7292 | readonly_dynrelocs (struct elf_link_hash_entry *h) |
7293 | { | |
7294 | struct ppc_link_hash_entry *eh; | |
7295 | struct elf_dyn_relocs *p; | |
7296 | ||
7297 | eh = (struct ppc_link_hash_entry *) h; | |
7298 | for (p = eh->dyn_relocs; p != NULL; p = p->next) | |
7299 | { | |
7300 | asection *s = p->sec->output_section; | |
7301 | ||
7302 | if (s != NULL && (s->flags & SEC_READONLY) != 0) | |
98bbb1b8 | 7303 | return p->sec; |
a345bc8d | 7304 | } |
98bbb1b8 | 7305 | return NULL; |
a345bc8d AM |
7306 | } |
7307 | ||
d311bc8b | 7308 | /* Return true if we have dynamic relocs against H or any of its weak |
ab2477e1 AM |
7309 | aliases, that apply to read-only sections. Cannot be used after |
7310 | size_dynamic_sections. */ | |
d311bc8b AM |
7311 | |
7312 | static bfd_boolean | |
7313 | alias_readonly_dynrelocs (struct elf_link_hash_entry *h) | |
7314 | { | |
7315 | struct ppc_link_hash_entry *eh; | |
7316 | ||
7317 | eh = (struct ppc_link_hash_entry *) h; | |
7318 | do | |
7319 | { | |
7320 | if (readonly_dynrelocs (&eh->elf)) | |
7321 | return TRUE; | |
ab2477e1 | 7322 | eh = (struct ppc_link_hash_entry *) eh->elf.u.alias; |
2cdcc330 AM |
7323 | } |
7324 | while (eh != NULL && &eh->elf != h); | |
d311bc8b AM |
7325 | |
7326 | return FALSE; | |
7327 | } | |
8a2058b5 | 7328 | |
8a9e8e72 AM |
7329 | /* Return whether EH has pc-relative dynamic relocs. */ |
7330 | ||
7331 | static bfd_boolean | |
7332 | pc_dynrelocs (struct ppc_link_hash_entry *eh) | |
7333 | { | |
7334 | struct elf_dyn_relocs *p; | |
7335 | ||
7336 | for (p = eh->dyn_relocs; p != NULL; p = p->next) | |
7337 | if (p->pc_count != 0) | |
7338 | return TRUE; | |
7339 | return FALSE; | |
7340 | } | |
7341 | ||
8a2058b5 AM |
7342 | /* Return true if a global entry stub will be created for H. Valid |
7343 | for ELFv2 before plt entries have been allocated. */ | |
7344 | ||
7345 | static bfd_boolean | |
7346 | global_entry_stub (struct elf_link_hash_entry *h) | |
7347 | { | |
7348 | struct plt_entry *pent; | |
7349 | ||
7350 | if (!h->pointer_equality_needed | |
7351 | || h->def_regular) | |
7352 | return FALSE; | |
7353 | ||
7354 | for (pent = h->plt.plist; pent != NULL; pent = pent->next) | |
7355 | if (pent->plt.refcount > 0 | |
7356 | && pent->addend == 0) | |
7357 | return TRUE; | |
7358 | ||
7359 | return FALSE; | |
7360 | } | |
7361 | ||
e86ce104 AM |
7362 | /* Adjust a symbol defined by a dynamic object and referenced by a |
7363 | regular object. The current definition is in some section of the | |
7364 | dynamic object, but we're not including those sections. We have to | |
7365 | change the definition to something the rest of the link can | |
7366 | understand. */ | |
7367 | ||
b34976b6 | 7368 | static bfd_boolean |
4ce794b7 AM |
7369 | ppc64_elf_adjust_dynamic_symbol (struct bfd_link_info *info, |
7370 | struct elf_link_hash_entry *h) | |
e86ce104 AM |
7371 | { |
7372 | struct ppc_link_hash_table *htab; | |
5474d94f | 7373 | asection *s, *srel; |
e86ce104 AM |
7374 | |
7375 | htab = ppc_hash_table (info); | |
4dfe6ac6 NC |
7376 | if (htab == NULL) |
7377 | return FALSE; | |
e86ce104 AM |
7378 | |
7379 | /* Deal with function syms. */ | |
7380 | if (h->type == STT_FUNC | |
e054468f | 7381 | || h->type == STT_GNU_IFUNC |
f5385ebf | 7382 | || h->needs_plt) |
e86ce104 | 7383 | { |
529fe20e AM |
7384 | bfd_boolean local = (((struct ppc_link_hash_entry *) h)->save_res |
7385 | || SYMBOL_CALLS_LOCAL (info, h) | |
7386 | || UNDEFWEAK_NO_DYNAMIC_RELOC (info, h)); | |
7387 | /* Discard dyn_relocs when non-pic if we've decided that a | |
7388 | function symbol is local and not an ifunc. We keep dynamic | |
7389 | relocs for ifuncs when local rather than always emitting a | |
7390 | plt call stub for them and defining the symbol on the call | |
7391 | stub. We can't do that for ELFv1 anyway (a function symbol | |
7392 | is defined on a descriptor, not code) and it can be faster at | |
7393 | run-time due to not needing to bounce through a stub. The | |
7394 | dyn_relocs for ifuncs will be applied even in a static | |
7395 | executable. */ | |
7396 | if (!bfd_link_pic (info) | |
7397 | && h->type != STT_GNU_IFUNC | |
7398 | && local) | |
7399 | ((struct ppc_link_hash_entry *) h)->dyn_relocs = NULL; | |
7400 | ||
e86ce104 AM |
7401 | /* Clear procedure linkage table information for any symbol that |
7402 | won't need a .plt entry. */ | |
411e1bfb AM |
7403 | struct plt_entry *ent; |
7404 | for (ent = h->plt.plist; ent != NULL; ent = ent->next) | |
7405 | if (ent->plt.refcount > 0) | |
7406 | break; | |
8387904d | 7407 | if (ent == NULL |
2d7ad24e AM |
7408 | || (h->type != STT_GNU_IFUNC |
7409 | && local | |
3e04d765 AM |
7410 | && (htab->can_convert_all_inline_plt |
7411 | || (((struct ppc_link_hash_entry *) h)->tls_mask | |
7412 | & (TLS_TLS | PLT_KEEP)) != PLT_KEEP))) | |
40b8271b | 7413 | { |
411e1bfb | 7414 | h->plt.plist = NULL; |
f5385ebf | 7415 | h->needs_plt = 0; |
d1eca1e4 | 7416 | h->pointer_equality_needed = 0; |
40b8271b | 7417 | } |
8a2058b5 | 7418 | else if (abiversion (info->output_bfd) >= 2) |
a345bc8d | 7419 | { |
d1eca1e4 AM |
7420 | /* Taking a function's address in a read/write section |
7421 | doesn't require us to define the function symbol in the | |
7422 | executable on a global entry stub. A dynamic reloc can | |
8a2058b5 AM |
7423 | be used instead. The reason we prefer a few more dynamic |
7424 | relocs is that calling via a global entry stub costs a | |
7425 | few more instructions, and pointer_equality_needed causes | |
7426 | extra work in ld.so when resolving these symbols. */ | |
529fe20e | 7427 | if (global_entry_stub (h)) |
d1eca1e4 | 7428 | { |
ab2477e1 | 7429 | if (!readonly_dynrelocs (h)) |
529fe20e AM |
7430 | { |
7431 | h->pointer_equality_needed = 0; | |
04383fd1 AM |
7432 | /* If we haven't seen a branch reloc and the symbol |
7433 | isn't an ifunc then we don't need a plt entry. */ | |
529fe20e AM |
7434 | if (!h->needs_plt) |
7435 | h->plt.plist = NULL; | |
7436 | } | |
7437 | else if (!bfd_link_pic (info)) | |
7438 | /* We are going to be defining the function symbol on the | |
7439 | plt stub, so no dyn_relocs needed when non-pic. */ | |
7440 | ((struct ppc_link_hash_entry *) h)->dyn_relocs = NULL; | |
d1eca1e4 AM |
7441 | } |
7442 | ||
3988aed5 AM |
7443 | /* ELFv2 function symbols can't have copy relocs. */ |
7444 | return TRUE; | |
7445 | } | |
7446 | else if (!h->needs_plt | |
ab2477e1 | 7447 | && !readonly_dynrelocs (h)) |
3988aed5 | 7448 | { |
04383fd1 AM |
7449 | /* If we haven't seen a branch reloc and the symbol isn't an |
7450 | ifunc then we don't need a plt entry. */ | |
3988aed5 AM |
7451 | h->plt.plist = NULL; |
7452 | h->pointer_equality_needed = 0; | |
a345bc8d AM |
7453 | return TRUE; |
7454 | } | |
5bd4f169 | 7455 | } |
bbd7ec4a | 7456 | else |
411e1bfb | 7457 | h->plt.plist = NULL; |
5bd4f169 AM |
7458 | |
7459 | /* If this is a weak symbol, and there is a real definition, the | |
7460 | processor independent code will have arranged for us to see the | |
7461 | real definition first, and we can just use the same value. */ | |
60d67dc8 | 7462 | if (h->is_weakalias) |
5bd4f169 | 7463 | { |
60d67dc8 AM |
7464 | struct elf_link_hash_entry *def = weakdef (h); |
7465 | BFD_ASSERT (def->root.type == bfd_link_hash_defined); | |
7466 | h->root.u.def.section = def->root.u.def.section; | |
7467 | h->root.u.def.value = def->root.u.def.value; | |
4a7e5234 AM |
7468 | if (def->root.u.def.section == htab->elf.sdynbss |
7469 | || def->root.u.def.section == htab->elf.sdynrelro) | |
7470 | ((struct ppc_link_hash_entry *) h)->dyn_relocs = NULL; | |
b34976b6 | 7471 | return TRUE; |
5bd4f169 AM |
7472 | } |
7473 | ||
5bd4f169 AM |
7474 | /* If we are creating a shared library, we must presume that the |
7475 | only references to the symbol are via the global offset table. | |
7476 | For such cases we need not do anything here; the relocations will | |
7477 | be handled correctly by relocate_section. */ | |
0e1862bb | 7478 | if (bfd_link_pic (info)) |
b34976b6 | 7479 | return TRUE; |
5bd4f169 | 7480 | |
65f38f15 AM |
7481 | /* If there are no references to this symbol that do not use the |
7482 | GOT, we don't need to generate a copy reloc. */ | |
f5385ebf | 7483 | if (!h->non_got_ref) |
b34976b6 | 7484 | return TRUE; |
65f38f15 | 7485 | |
b186458a | 7486 | /* Don't generate a copy reloc for symbols defined in the executable. */ |
d93d1c80 | 7487 | if (!h->def_dynamic || !h->ref_regular || h->def_regular |
b186458a | 7488 | |
d93d1c80 AM |
7489 | /* If -z nocopyreloc was given, don't generate them either. */ |
7490 | || info->nocopyreloc | |
a127494f | 7491 | |
dce2246a | 7492 | /* If we don't find any dynamic relocs in read-only sections, then |
d93d1c80 | 7493 | we'll be keeping the dynamic relocs and avoiding the copy reloc. */ |
d311bc8b | 7494 | || (ELIMINATE_COPY_RELOCS && !alias_readonly_dynrelocs (h)) |
65f38f15 | 7495 | |
d93d1c80 AM |
7496 | /* Protected variables do not work with .dynbss. The copy in |
7497 | .dynbss won't be used by the shared library with the protected | |
7498 | definition for the variable. Text relocations are preferable | |
7499 | to an incorrect program. */ | |
7500 | || h->protected_def) | |
529fe20e | 7501 | return TRUE; |
a127494f | 7502 | |
5d35169e | 7503 | if (h->plt.plist != NULL) |
97b639ba AM |
7504 | { |
7505 | /* We should never get here, but unfortunately there are versions | |
7506 | of gcc out there that improperly (for this ABI) put initialized | |
7507 | function pointers, vtable refs and suchlike in read-only | |
7508 | sections. Allow them to proceed, but warn that this might | |
7509 | break at runtime. */ | |
25f53a85 | 7510 | info->callbacks->einfo |
c1c8c1ef | 7511 | (_("%P: copy reloc against `%pT' requires lazy plt linking; " |
25f53a85 | 7512 | "avoid setting LD_BIND_NOW=1 or upgrade gcc\n"), |
97b639ba AM |
7513 | h->root.root.string); |
7514 | } | |
5d35169e AM |
7515 | |
7516 | /* This is a reference to a symbol defined by a dynamic object which | |
7517 | is not a function. */ | |
7518 | ||
5bd4f169 AM |
7519 | /* We must allocate the symbol in our .dynbss section, which will |
7520 | become part of the .bss section of the executable. There will be | |
7521 | an entry for this symbol in the .dynsym section. The dynamic | |
7522 | object will contain position independent code, so all references | |
7523 | from the dynamic object to this symbol will go through the global | |
7524 | offset table. The dynamic linker will use the .dynsym entry to | |
7525 | determine the address it must put in the global offset table, so | |
7526 | both the dynamic object and the regular object will refer to the | |
7527 | same memory location for the variable. */ | |
5474d94f AM |
7528 | if ((h->root.u.def.section->flags & SEC_READONLY) != 0) |
7529 | { | |
7530 | s = htab->elf.sdynrelro; | |
7531 | srel = htab->elf.sreldynrelro; | |
7532 | } | |
7533 | else | |
7534 | { | |
7535 | s = htab->elf.sdynbss; | |
7536 | srel = htab->elf.srelbss; | |
7537 | } | |
1d7e9d18 | 7538 | if ((h->root.u.def.section->flags & SEC_ALLOC) != 0 && h->size != 0) |
5bd4f169 | 7539 | { |
4a7e5234 AM |
7540 | /* We must generate a R_PPC64_COPY reloc to tell the dynamic |
7541 | linker to copy the initial value out of the dynamic object | |
7542 | and into the runtime process image. */ | |
5474d94f | 7543 | srel->size += sizeof (Elf64_External_Rela); |
f5385ebf | 7544 | h->needs_copy = 1; |
5bd4f169 AM |
7545 | } |
7546 | ||
529fe20e AM |
7547 | /* We no longer want dyn_relocs. */ |
7548 | ((struct ppc_link_hash_entry *) h)->dyn_relocs = NULL; | |
6cabe1ea | 7549 | return _bfd_elf_adjust_dynamic_copy (info, h, s); |
5bd4f169 AM |
7550 | } |
7551 | ||
e86ce104 AM |
7552 | /* If given a function descriptor symbol, hide both the function code |
7553 | sym and the descriptor. */ | |
7554 | static void | |
4ce794b7 AM |
7555 | ppc64_elf_hide_symbol (struct bfd_link_info *info, |
7556 | struct elf_link_hash_entry *h, | |
7557 | bfd_boolean force_local) | |
e86ce104 | 7558 | { |
34814b9f | 7559 | struct ppc_link_hash_entry *eh; |
e86ce104 AM |
7560 | _bfd_elf_link_hash_hide_symbol (info, h, force_local); |
7561 | ||
34814b9f AM |
7562 | eh = (struct ppc_link_hash_entry *) h; |
7563 | if (eh->is_func_descriptor) | |
e86ce104 | 7564 | { |
34814b9f | 7565 | struct ppc_link_hash_entry *fh = eh->oh; |
e86ce104 | 7566 | |
721956f4 | 7567 | if (fh == NULL) |
d1329ca3 AM |
7568 | { |
7569 | const char *p, *q; | |
b8ac2841 | 7570 | struct elf_link_hash_table *htab = elf_hash_table (info); |
d1329ca3 AM |
7571 | char save; |
7572 | ||
7573 | /* We aren't supposed to use alloca in BFD because on | |
7574 | systems which do not have alloca the version in libiberty | |
7575 | calls xmalloc, which might cause the program to crash | |
7576 | when it runs out of memory. This function doesn't have a | |
7577 | return status, so there's no way to gracefully return an | |
7578 | error. So cheat. We know that string[-1] can be safely | |
34814b9f AM |
7579 | accessed; It's either a string in an ELF string table, |
7580 | or allocated in an objalloc structure. */ | |
d1329ca3 | 7581 | |
34814b9f | 7582 | p = eh->elf.root.root.string - 1; |
d1329ca3 AM |
7583 | save = *p; |
7584 | *(char *) p = '.'; | |
34814b9f | 7585 | fh = (struct ppc_link_hash_entry *) |
b8ac2841 | 7586 | elf_link_hash_lookup (htab, p, FALSE, FALSE, FALSE); |
d1329ca3 AM |
7587 | *(char *) p = save; |
7588 | ||
7589 | /* Unfortunately, if it so happens that the string we were | |
7590 | looking for was allocated immediately before this string, | |
7591 | then we overwrote the string terminator. That's the only | |
7592 | reason the lookup should fail. */ | |
7593 | if (fh == NULL) | |
7594 | { | |
34814b9f AM |
7595 | q = eh->elf.root.root.string + strlen (eh->elf.root.root.string); |
7596 | while (q >= eh->elf.root.root.string && *q == *p) | |
d1329ca3 | 7597 | --q, --p; |
34814b9f AM |
7598 | if (q < eh->elf.root.root.string && *p == '.') |
7599 | fh = (struct ppc_link_hash_entry *) | |
b8ac2841 | 7600 | elf_link_hash_lookup (htab, p, FALSE, FALSE, FALSE); |
d1329ca3 AM |
7601 | } |
7602 | if (fh != NULL) | |
7603 | { | |
34814b9f AM |
7604 | eh->oh = fh; |
7605 | fh->oh = eh; | |
d1329ca3 AM |
7606 | } |
7607 | } | |
e86ce104 | 7608 | if (fh != NULL) |
34814b9f | 7609 | _bfd_elf_link_hash_hide_symbol (info, &fh->elf, force_local); |
e86ce104 AM |
7610 | } |
7611 | } | |
7612 | ||
411e1bfb | 7613 | static bfd_boolean |
8843416a AM |
7614 | get_sym_h (struct elf_link_hash_entry **hp, |
7615 | Elf_Internal_Sym **symp, | |
7616 | asection **symsecp, | |
f961d9dd | 7617 | unsigned char **tls_maskp, |
8843416a AM |
7618 | Elf_Internal_Sym **locsymsp, |
7619 | unsigned long r_symndx, | |
7620 | bfd *ibfd) | |
411e1bfb | 7621 | { |
0ffa91dd | 7622 | Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (ibfd); |
411e1bfb AM |
7623 | |
7624 | if (r_symndx >= symtab_hdr->sh_info) | |
7625 | { | |
7626 | struct elf_link_hash_entry **sym_hashes = elf_sym_hashes (ibfd); | |
7627 | struct elf_link_hash_entry *h; | |
7628 | ||
7629 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; | |
b31867b6 | 7630 | h = elf_follow_link (h); |
411e1bfb AM |
7631 | |
7632 | if (hp != NULL) | |
7633 | *hp = h; | |
7634 | ||
7635 | if (symp != NULL) | |
7636 | *symp = NULL; | |
7637 | ||
7638 | if (symsecp != NULL) | |
7639 | { | |
7640 | asection *symsec = NULL; | |
7641 | if (h->root.type == bfd_link_hash_defined | |
7642 | || h->root.type == bfd_link_hash_defweak) | |
7643 | symsec = h->root.u.def.section; | |
7644 | *symsecp = symsec; | |
7645 | } | |
7646 | ||
e7b938ca | 7647 | if (tls_maskp != NULL) |
411e1bfb AM |
7648 | { |
7649 | struct ppc_link_hash_entry *eh; | |
7650 | ||
7651 | eh = (struct ppc_link_hash_entry *) h; | |
e7b938ca | 7652 | *tls_maskp = &eh->tls_mask; |
411e1bfb AM |
7653 | } |
7654 | } | |
7655 | else | |
7656 | { | |
7657 | Elf_Internal_Sym *sym; | |
7658 | Elf_Internal_Sym *locsyms = *locsymsp; | |
7659 | ||
7660 | if (locsyms == NULL) | |
7661 | { | |
7662 | locsyms = (Elf_Internal_Sym *) symtab_hdr->contents; | |
7663 | if (locsyms == NULL) | |
7664 | locsyms = bfd_elf_get_elf_syms (ibfd, symtab_hdr, | |
7665 | symtab_hdr->sh_info, | |
7666 | 0, NULL, NULL, NULL); | |
7667 | if (locsyms == NULL) | |
7668 | return FALSE; | |
7669 | *locsymsp = locsyms; | |
7670 | } | |
7671 | sym = locsyms + r_symndx; | |
7672 | ||
7673 | if (hp != NULL) | |
7674 | *hp = NULL; | |
7675 | ||
7676 | if (symp != NULL) | |
7677 | *symp = sym; | |
7678 | ||
7679 | if (symsecp != NULL) | |
cb33740c | 7680 | *symsecp = bfd_section_from_elf_index (ibfd, sym->st_shndx); |
411e1bfb | 7681 | |
e7b938ca | 7682 | if (tls_maskp != NULL) |
411e1bfb AM |
7683 | { |
7684 | struct got_entry **lgot_ents; | |
f961d9dd | 7685 | unsigned char *tls_mask; |
411e1bfb | 7686 | |
e7b938ca | 7687 | tls_mask = NULL; |
411e1bfb AM |
7688 | lgot_ents = elf_local_got_ents (ibfd); |
7689 | if (lgot_ents != NULL) | |
7690 | { | |
e054468f AM |
7691 | struct plt_entry **local_plt = (struct plt_entry **) |
7692 | (lgot_ents + symtab_hdr->sh_info); | |
f961d9dd | 7693 | unsigned char *lgot_masks = (unsigned char *) |
e054468f | 7694 | (local_plt + symtab_hdr->sh_info); |
e7b938ca | 7695 | tls_mask = &lgot_masks[r_symndx]; |
411e1bfb | 7696 | } |
e7b938ca | 7697 | *tls_maskp = tls_mask; |
411e1bfb AM |
7698 | } |
7699 | } | |
7700 | return TRUE; | |
7701 | } | |
7702 | ||
e7b938ca | 7703 | /* Returns TLS_MASKP for the given REL symbol. Function return is 0 on |
951fd09b | 7704 | error, 2 on a toc GD type suitable for optimization, 3 on a toc LD |
ad8e1ba5 | 7705 | type suitable for optimization, and 1 otherwise. */ |
951fd09b AM |
7706 | |
7707 | static int | |
f961d9dd | 7708 | get_tls_mask (unsigned char **tls_maskp, |
3a71aa26 AM |
7709 | unsigned long *toc_symndx, |
7710 | bfd_vma *toc_addend, | |
0d4792f7 | 7711 | Elf_Internal_Sym **locsymsp, |
3a71aa26 AM |
7712 | const Elf_Internal_Rela *rel, |
7713 | bfd *ibfd) | |
411e1bfb AM |
7714 | { |
7715 | unsigned long r_symndx; | |
0d4792f7 | 7716 | int next_r; |
411e1bfb AM |
7717 | struct elf_link_hash_entry *h; |
7718 | Elf_Internal_Sym *sym; | |
7719 | asection *sec; | |
7720 | bfd_vma off; | |
7721 | ||
7722 | r_symndx = ELF64_R_SYM (rel->r_info); | |
e7b938ca | 7723 | if (!get_sym_h (&h, &sym, &sec, tls_maskp, locsymsp, r_symndx, ibfd)) |
951fd09b | 7724 | return 0; |
411e1bfb | 7725 | |
37da22e5 AM |
7726 | if ((*tls_maskp != NULL |
7727 | && (**tls_maskp & TLS_TLS) != 0 | |
7728 | && **tls_maskp != (TLS_TLS | TLS_MARK)) | |
411e1bfb | 7729 | || sec == NULL |
6bee8834 | 7730 | || ppc64_elf_section_data (sec) == NULL |
7c8fe5c4 | 7731 | || ppc64_elf_section_data (sec)->sec_type != sec_toc) |
951fd09b | 7732 | return 1; |
411e1bfb AM |
7733 | |
7734 | /* Look inside a TOC section too. */ | |
7735 | if (h != NULL) | |
7736 | { | |
7737 | BFD_ASSERT (h->root.type == bfd_link_hash_defined); | |
7738 | off = h->root.u.def.value; | |
7739 | } | |
7740 | else | |
7741 | off = sym->st_value; | |
7742 | off += rel->r_addend; | |
7743 | BFD_ASSERT (off % 8 == 0); | |
3a71aa26 AM |
7744 | r_symndx = ppc64_elf_section_data (sec)->u.toc.symndx[off / 8]; |
7745 | next_r = ppc64_elf_section_data (sec)->u.toc.symndx[off / 8 + 1]; | |
0d4792f7 AM |
7746 | if (toc_symndx != NULL) |
7747 | *toc_symndx = r_symndx; | |
3a71aa26 AM |
7748 | if (toc_addend != NULL) |
7749 | *toc_addend = ppc64_elf_section_data (sec)->u.toc.add[off / 8]; | |
7750 | if (!get_sym_h (&h, &sym, &sec, tls_maskp, locsymsp, r_symndx, ibfd)) | |
7751 | return 0; | |
854b41e7 | 7752 | if ((h == NULL || is_static_defined (h)) |
0d4792f7 AM |
7753 | && (next_r == -1 || next_r == -2)) |
7754 | return 1 - next_r; | |
951fd09b | 7755 | return 1; |
411e1bfb AM |
7756 | } |
7757 | ||
3b421ab3 AM |
7758 | /* Find (or create) an entry in the tocsave hash table. */ |
7759 | ||
7760 | static struct tocsave_entry * | |
7761 | tocsave_find (struct ppc_link_hash_table *htab, | |
7762 | enum insert_option insert, | |
7763 | Elf_Internal_Sym **local_syms, | |
7764 | const Elf_Internal_Rela *irela, | |
7765 | bfd *ibfd) | |
7766 | { | |
7767 | unsigned long r_indx; | |
7768 | struct elf_link_hash_entry *h; | |
7769 | Elf_Internal_Sym *sym; | |
7770 | struct tocsave_entry ent, *p; | |
7771 | hashval_t hash; | |
7772 | struct tocsave_entry **slot; | |
7773 | ||
7774 | r_indx = ELF64_R_SYM (irela->r_info); | |
7775 | if (!get_sym_h (&h, &sym, &ent.sec, NULL, local_syms, r_indx, ibfd)) | |
7776 | return NULL; | |
7777 | if (ent.sec == NULL || ent.sec->output_section == NULL) | |
7778 | { | |
4eca0228 | 7779 | _bfd_error_handler |
871b3ab2 | 7780 | (_("%pB: undefined symbol on R_PPC64_TOCSAVE relocation"), ibfd); |
3b421ab3 AM |
7781 | return NULL; |
7782 | } | |
7783 | ||
7784 | if (h != NULL) | |
7785 | ent.offset = h->root.u.def.value; | |
7786 | else | |
7787 | ent.offset = sym->st_value; | |
7788 | ent.offset += irela->r_addend; | |
7789 | ||
7790 | hash = tocsave_htab_hash (&ent); | |
7791 | slot = ((struct tocsave_entry **) | |
7792 | htab_find_slot_with_hash (htab->tocsave_htab, &ent, hash, insert)); | |
7793 | if (slot == NULL) | |
7794 | return NULL; | |
7795 | ||
7796 | if (*slot == NULL) | |
7797 | { | |
7798 | p = (struct tocsave_entry *) bfd_alloc (ibfd, sizeof (*p)); | |
7799 | if (p == NULL) | |
7800 | return NULL; | |
7801 | *p = ent; | |
7802 | *slot = p; | |
7803 | } | |
7804 | return *slot; | |
7805 | } | |
7806 | ||
754021d0 | 7807 | /* Adjust all global syms defined in opd sections. In gcc generated |
8387904d | 7808 | code for the old ABI, these will already have been done. */ |
754021d0 AM |
7809 | |
7810 | static bfd_boolean | |
7811 | adjust_opd_syms (struct elf_link_hash_entry *h, void *inf ATTRIBUTE_UNUSED) | |
7812 | { | |
7813 | struct ppc_link_hash_entry *eh; | |
7814 | asection *sym_sec; | |
74f0fb50 | 7815 | struct _opd_sec_data *opd; |
754021d0 AM |
7816 | |
7817 | if (h->root.type == bfd_link_hash_indirect) | |
7818 | return TRUE; | |
7819 | ||
754021d0 AM |
7820 | if (h->root.type != bfd_link_hash_defined |
7821 | && h->root.type != bfd_link_hash_defweak) | |
7822 | return TRUE; | |
7823 | ||
7824 | eh = (struct ppc_link_hash_entry *) h; | |
7825 | if (eh->adjust_done) | |
7826 | return TRUE; | |
7827 | ||
7828 | sym_sec = eh->elf.root.u.def.section; | |
74f0fb50 AM |
7829 | opd = get_opd_info (sym_sec); |
7830 | if (opd != NULL && opd->adjust != NULL) | |
754021d0 | 7831 | { |
51aecdc5 | 7832 | long adjust = opd->adjust[OPD_NDX (eh->elf.root.u.def.value)]; |
4025353c AM |
7833 | if (adjust == -1) |
7834 | { | |
7835 | /* This entry has been deleted. */ | |
b3fac117 | 7836 | asection *dsec = ppc64_elf_tdata (sym_sec->owner)->deleted_section; |
81688140 AM |
7837 | if (dsec == NULL) |
7838 | { | |
7839 | for (dsec = sym_sec->owner->sections; dsec; dsec = dsec->next) | |
dbaa2011 | 7840 | if (discarded_section (dsec)) |
81688140 | 7841 | { |
b3fac117 | 7842 | ppc64_elf_tdata (sym_sec->owner)->deleted_section = dsec; |
81688140 AM |
7843 | break; |
7844 | } | |
7845 | } | |
4025353c | 7846 | eh->elf.root.u.def.value = 0; |
81688140 | 7847 | eh->elf.root.u.def.section = dsec; |
4025353c AM |
7848 | } |
7849 | else | |
7850 | eh->elf.root.u.def.value += adjust; | |
754021d0 AM |
7851 | eh->adjust_done = 1; |
7852 | } | |
7853 | return TRUE; | |
7854 | } | |
7855 | ||
8c1d1bb8 | 7856 | /* Handles decrementing dynamic reloc counts for the reloc specified by |
19e08130 | 7857 | R_INFO in section SEC. If LOCAL_SYMS is NULL, then H and SYM |
8c1d1bb8 AM |
7858 | have already been determined. */ |
7859 | ||
7860 | static bfd_boolean | |
7861 | dec_dynrel_count (bfd_vma r_info, | |
7862 | asection *sec, | |
7863 | struct bfd_link_info *info, | |
7864 | Elf_Internal_Sym **local_syms, | |
7865 | struct elf_link_hash_entry *h, | |
19e08130 | 7866 | Elf_Internal_Sym *sym) |
8c1d1bb8 AM |
7867 | { |
7868 | enum elf_ppc64_reloc_type r_type; | |
19e08130 | 7869 | asection *sym_sec = NULL; |
8c1d1bb8 AM |
7870 | |
7871 | /* Can this reloc be dynamic? This switch, and later tests here | |
7872 | should be kept in sync with the code in check_relocs. */ | |
7873 | r_type = ELF64_R_TYPE (r_info); | |
7874 | switch (r_type) | |
7875 | { | |
7876 | default: | |
7877 | return TRUE; | |
7878 | ||
7879 | case R_PPC64_TPREL16: | |
7880 | case R_PPC64_TPREL16_LO: | |
7881 | case R_PPC64_TPREL16_HI: | |
7882 | case R_PPC64_TPREL16_HA: | |
7883 | case R_PPC64_TPREL16_DS: | |
7884 | case R_PPC64_TPREL16_LO_DS: | |
f9c6b907 AM |
7885 | case R_PPC64_TPREL16_HIGH: |
7886 | case R_PPC64_TPREL16_HIGHA: | |
8c1d1bb8 AM |
7887 | case R_PPC64_TPREL16_HIGHER: |
7888 | case R_PPC64_TPREL16_HIGHERA: | |
7889 | case R_PPC64_TPREL16_HIGHEST: | |
7890 | case R_PPC64_TPREL16_HIGHESTA: | |
8c1d1bb8 AM |
7891 | case R_PPC64_TPREL64: |
7892 | case R_PPC64_DTPMOD64: | |
7893 | case R_PPC64_DTPREL64: | |
7894 | case R_PPC64_ADDR64: | |
7895 | case R_PPC64_REL30: | |
7896 | case R_PPC64_REL32: | |
7897 | case R_PPC64_REL64: | |
7898 | case R_PPC64_ADDR14: | |
7899 | case R_PPC64_ADDR14_BRNTAKEN: | |
7900 | case R_PPC64_ADDR14_BRTAKEN: | |
7901 | case R_PPC64_ADDR16: | |
7902 | case R_PPC64_ADDR16_DS: | |
7903 | case R_PPC64_ADDR16_HA: | |
7904 | case R_PPC64_ADDR16_HI: | |
f9c6b907 AM |
7905 | case R_PPC64_ADDR16_HIGH: |
7906 | case R_PPC64_ADDR16_HIGHA: | |
8c1d1bb8 AM |
7907 | case R_PPC64_ADDR16_HIGHER: |
7908 | case R_PPC64_ADDR16_HIGHERA: | |
7909 | case R_PPC64_ADDR16_HIGHEST: | |
7910 | case R_PPC64_ADDR16_HIGHESTA: | |
7911 | case R_PPC64_ADDR16_LO: | |
7912 | case R_PPC64_ADDR16_LO_DS: | |
7913 | case R_PPC64_ADDR24: | |
7914 | case R_PPC64_ADDR32: | |
7915 | case R_PPC64_UADDR16: | |
7916 | case R_PPC64_UADDR32: | |
7917 | case R_PPC64_UADDR64: | |
7918 | case R_PPC64_TOC: | |
7919 | break; | |
7920 | } | |
7921 | ||
7922 | if (local_syms != NULL) | |
7923 | { | |
7924 | unsigned long r_symndx; | |
8c1d1bb8 AM |
7925 | bfd *ibfd = sec->owner; |
7926 | ||
7927 | r_symndx = ELF64_R_SYM (r_info); | |
7928 | if (!get_sym_h (&h, &sym, &sym_sec, NULL, local_syms, r_symndx, ibfd)) | |
7929 | return FALSE; | |
7930 | } | |
7931 | ||
0e1862bb | 7932 | if ((bfd_link_pic (info) |
1d483afe | 7933 | && (must_be_dyn_reloc (info, r_type) |
8c1d1bb8 | 7934 | || (h != NULL |
198f1157 | 7935 | && (!SYMBOLIC_BIND (info, h) |
8c1d1bb8 AM |
7936 | || h->root.type == bfd_link_hash_defweak |
7937 | || !h->def_regular)))) | |
7938 | || (ELIMINATE_COPY_RELOCS | |
0e1862bb | 7939 | && !bfd_link_pic (info) |
8c1d1bb8 AM |
7940 | && h != NULL |
7941 | && (h->root.type == bfd_link_hash_defweak | |
7942 | || !h->def_regular))) | |
7943 | ; | |
7944 | else | |
7945 | return TRUE; | |
7946 | ||
7947 | if (h != NULL) | |
6edfbbad | 7948 | { |
19e08130 AM |
7949 | struct elf_dyn_relocs *p; |
7950 | struct elf_dyn_relocs **pp; | |
7951 | pp = &((struct ppc_link_hash_entry *) h)->dyn_relocs; | |
7952 | ||
7953 | /* elf_gc_sweep may have already removed all dyn relocs associated | |
7954 | with local syms for a given section. Also, symbol flags are | |
7955 | changed by elf_gc_sweep_symbol, confusing the test above. Don't | |
7956 | report a dynreloc miscount. */ | |
7957 | if (*pp == NULL && info->gc_sections) | |
7958 | return TRUE; | |
7959 | ||
7960 | while ((p = *pp) != NULL) | |
60124e18 | 7961 | { |
19e08130 AM |
7962 | if (p->sec == sec) |
7963 | { | |
7964 | if (!must_be_dyn_reloc (info, r_type)) | |
7965 | p->pc_count -= 1; | |
7966 | p->count -= 1; | |
7967 | if (p->count == 0) | |
7968 | *pp = p->next; | |
7969 | return TRUE; | |
7970 | } | |
7971 | pp = &p->next; | |
60124e18 | 7972 | } |
6edfbbad | 7973 | } |
19e08130 AM |
7974 | else |
7975 | { | |
7976 | struct ppc_dyn_relocs *p; | |
7977 | struct ppc_dyn_relocs **pp; | |
7978 | void *vpp; | |
7979 | bfd_boolean is_ifunc; | |
8c1d1bb8 | 7980 | |
19e08130 AM |
7981 | if (local_syms == NULL) |
7982 | sym_sec = bfd_section_from_elf_index (sec->owner, sym->st_shndx); | |
7983 | if (sym_sec == NULL) | |
7984 | sym_sec = sec; | |
c57da1a7 | 7985 | |
19e08130 AM |
7986 | vpp = &elf_section_data (sym_sec)->local_dynrel; |
7987 | pp = (struct ppc_dyn_relocs **) vpp; | |
7988 | ||
7989 | if (*pp == NULL && info->gc_sections) | |
7990 | return TRUE; | |
7991 | ||
7992 | is_ifunc = ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC; | |
7993 | while ((p = *pp) != NULL) | |
8c1d1bb8 | 7994 | { |
19e08130 AM |
7995 | if (p->sec == sec && p->ifunc == is_ifunc) |
7996 | { | |
7997 | p->count -= 1; | |
7998 | if (p->count == 0) | |
7999 | *pp = p->next; | |
8000 | return TRUE; | |
8001 | } | |
8002 | pp = &p->next; | |
8c1d1bb8 | 8003 | } |
8c1d1bb8 AM |
8004 | } |
8005 | ||
695344c0 | 8006 | /* xgettext:c-format */ |
cf97bcb0 AM |
8007 | _bfd_error_handler (_("dynreloc miscount for %pB, section %pA"), |
8008 | sec->owner, sec); | |
8c1d1bb8 AM |
8009 | bfd_set_error (bfd_error_bad_value); |
8010 | return FALSE; | |
8011 | } | |
8012 | ||
754021d0 AM |
8013 | /* Remove unused Official Procedure Descriptor entries. Currently we |
8014 | only remove those associated with functions in discarded link-once | |
8015 | sections, or weakly defined functions that have been overridden. It | |
8016 | would be possible to remove many more entries for statically linked | |
8017 | applications. */ | |
8018 | ||
b34976b6 | 8019 | bfd_boolean |
e7d1c40c | 8020 | ppc64_elf_edit_opd (struct bfd_link_info *info) |
1e2f5b6e AM |
8021 | { |
8022 | bfd *ibfd; | |
754021d0 | 8023 | bfd_boolean some_edited = FALSE; |
3f764659 | 8024 | asection *need_pad = NULL; |
e7d1c40c AM |
8025 | struct ppc_link_hash_table *htab; |
8026 | ||
8027 | htab = ppc_hash_table (info); | |
8028 | if (htab == NULL) | |
8029 | return FALSE; | |
1e2f5b6e | 8030 | |
c72f2fb2 | 8031 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next) |
1e2f5b6e AM |
8032 | { |
8033 | asection *sec; | |
8034 | Elf_Internal_Rela *relstart, *rel, *relend; | |
8035 | Elf_Internal_Shdr *symtab_hdr; | |
6cdc0ccc | 8036 | Elf_Internal_Sym *local_syms; |
74f0fb50 | 8037 | struct _opd_sec_data *opd; |
51aecdc5 | 8038 | bfd_boolean need_edit, add_aux_fields, broken; |
3f764659 | 8039 | bfd_size_type cnt_16b = 0; |
1e2f5b6e | 8040 | |
854b41e7 AM |
8041 | if (!is_ppc64_elf (ibfd)) |
8042 | continue; | |
8043 | ||
1e2f5b6e | 8044 | sec = bfd_get_section_by_name (ibfd, ".opd"); |
46de2a7c | 8045 | if (sec == NULL || sec->size == 0) |
1e2f5b6e AM |
8046 | continue; |
8047 | ||
dbaa2011 | 8048 | if (sec->sec_info_type == SEC_INFO_TYPE_JUST_SYMS) |
4b85d634 AM |
8049 | continue; |
8050 | ||
1e2f5b6e AM |
8051 | if (sec->output_section == bfd_abs_section_ptr) |
8052 | continue; | |
8053 | ||
8054 | /* Look through the section relocs. */ | |
8055 | if ((sec->flags & SEC_RELOC) == 0 || sec->reloc_count == 0) | |
8056 | continue; | |
8057 | ||
6cdc0ccc | 8058 | local_syms = NULL; |
0ffa91dd | 8059 | symtab_hdr = &elf_symtab_hdr (ibfd); |
1e2f5b6e AM |
8060 | |
8061 | /* Read the relocations. */ | |
4ce794b7 | 8062 | relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL, |
45d6a902 | 8063 | info->keep_memory); |
1e2f5b6e | 8064 | if (relstart == NULL) |
b34976b6 | 8065 | return FALSE; |
1e2f5b6e AM |
8066 | |
8067 | /* First run through the relocs to check they are sane, and to | |
8068 | determine whether we need to edit this opd section. */ | |
b34976b6 | 8069 | need_edit = FALSE; |
51aecdc5 | 8070 | broken = FALSE; |
3f764659 | 8071 | need_pad = sec; |
1e2f5b6e | 8072 | relend = relstart + sec->reloc_count; |
50bc7936 | 8073 | for (rel = relstart; rel < relend; ) |
1e2f5b6e | 8074 | { |
04c9666a | 8075 | enum elf_ppc64_reloc_type r_type; |
1e2f5b6e AM |
8076 | unsigned long r_symndx; |
8077 | asection *sym_sec; | |
8078 | struct elf_link_hash_entry *h; | |
8079 | Elf_Internal_Sym *sym; | |
51aecdc5 | 8080 | bfd_vma offset; |
1e2f5b6e | 8081 | |
51aecdc5 | 8082 | /* .opd contains an array of 16 or 24 byte entries. We're |
1e2f5b6e AM |
8083 | only interested in the reloc pointing to a function entry |
8084 | point. */ | |
51aecdc5 AM |
8085 | offset = rel->r_offset; |
8086 | if (rel + 1 == relend | |
8087 | || rel[1].r_offset != offset + 8) | |
1e2f5b6e AM |
8088 | { |
8089 | /* If someone messes with .opd alignment then after a | |
8090 | "ld -r" we might have padding in the middle of .opd. | |
8091 | Also, there's nothing to prevent someone putting | |
8092 | something silly in .opd with the assembler. No .opd | |
b34976b6 | 8093 | optimization for them! */ |
3f764659 | 8094 | broken_opd: |
4eca0228 | 8095 | _bfd_error_handler |
871b3ab2 | 8096 | (_("%pB: .opd is not a regular array of opd entries"), ibfd); |
51aecdc5 | 8097 | broken = TRUE; |
1e2f5b6e AM |
8098 | break; |
8099 | } | |
8100 | ||
50bc7936 AM |
8101 | if ((r_type = ELF64_R_TYPE (rel->r_info)) != R_PPC64_ADDR64 |
8102 | || (r_type = ELF64_R_TYPE ((rel + 1)->r_info)) != R_PPC64_TOC) | |
8103 | { | |
4eca0228 | 8104 | _bfd_error_handler |
695344c0 | 8105 | /* xgettext:c-format */ |
871b3ab2 | 8106 | (_("%pB: unexpected reloc type %u in .opd section"), |
d003868e | 8107 | ibfd, r_type); |
51aecdc5 | 8108 | broken = TRUE; |
50bc7936 AM |
8109 | break; |
8110 | } | |
8111 | ||
1e2f5b6e | 8112 | r_symndx = ELF64_R_SYM (rel->r_info); |
411e1bfb AM |
8113 | if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, |
8114 | r_symndx, ibfd)) | |
50bc7936 | 8115 | goto error_ret; |
1e2f5b6e AM |
8116 | |
8117 | if (sym_sec == NULL || sym_sec->owner == NULL) | |
8118 | { | |
411e1bfb AM |
8119 | const char *sym_name; |
8120 | if (h != NULL) | |
8121 | sym_name = h->root.root.string; | |
8122 | else | |
26c61ae5 L |
8123 | sym_name = bfd_elf_sym_name (ibfd, symtab_hdr, sym, |
8124 | sym_sec); | |
411e1bfb | 8125 | |
4eca0228 | 8126 | _bfd_error_handler |
695344c0 | 8127 | /* xgettext:c-format */ |
871b3ab2 | 8128 | (_("%pB: undefined sym `%s' in .opd section"), |
d003868e | 8129 | ibfd, sym_name); |
51aecdc5 | 8130 | broken = TRUE; |
1e2f5b6e AM |
8131 | break; |
8132 | } | |
8133 | ||
51020317 AM |
8134 | /* opd entries are always for functions defined in the |
8135 | current input bfd. If the symbol isn't defined in the | |
8136 | input bfd, then we won't be using the function in this | |
8137 | bfd; It must be defined in a linkonce section in another | |
8138 | bfd, or is weak. It's also possible that we are | |
8139 | discarding the function due to a linker script /DISCARD/, | |
8140 | which we test for via the output_section. */ | |
8141 | if (sym_sec->owner != ibfd | |
8142 | || sym_sec->output_section == bfd_abs_section_ptr) | |
b34976b6 | 8143 | need_edit = TRUE; |
1e2f5b6e | 8144 | |
50bc7936 | 8145 | rel += 2; |
51aecdc5 AM |
8146 | if (rel + 1 == relend |
8147 | || (rel + 2 < relend | |
8148 | && ELF64_R_TYPE (rel[2].r_info) == R_PPC64_TOC)) | |
8149 | ++rel; | |
8150 | ||
8151 | if (rel == relend) | |
3f764659 JJ |
8152 | { |
8153 | if (sec->size == offset + 24) | |
8154 | { | |
8155 | need_pad = NULL; | |
8156 | break; | |
8157 | } | |
51aecdc5 | 8158 | if (sec->size == offset + 16) |
3f764659 JJ |
8159 | { |
8160 | cnt_16b++; | |
8161 | break; | |
8162 | } | |
8163 | goto broken_opd; | |
8164 | } | |
3f764659 JJ |
8165 | else if (rel + 1 < relend |
8166 | && ELF64_R_TYPE (rel[0].r_info) == R_PPC64_ADDR64 | |
8167 | && ELF64_R_TYPE (rel[1].r_info) == R_PPC64_TOC) | |
8168 | { | |
51aecdc5 AM |
8169 | if (rel[0].r_offset == offset + 16) |
8170 | cnt_16b++; | |
8171 | else if (rel[0].r_offset != offset + 24) | |
8172 | goto broken_opd; | |
3f764659 JJ |
8173 | } |
8174 | else | |
8175 | goto broken_opd; | |
1e2f5b6e AM |
8176 | } |
8177 | ||
e7d1c40c | 8178 | add_aux_fields = htab->params->non_overlapping_opd && cnt_16b > 0; |
3f764659 | 8179 | |
51aecdc5 | 8180 | if (!broken && (need_edit || add_aux_fields)) |
1e2f5b6e AM |
8181 | { |
8182 | Elf_Internal_Rela *write_rel; | |
d4730f92 | 8183 | Elf_Internal_Shdr *rel_hdr; |
1e2f5b6e | 8184 | bfd_byte *rptr, *wptr; |
983bddc8 | 8185 | bfd_byte *new_contents; |
74f0fb50 AM |
8186 | bfd_size_type amt; |
8187 | ||
983bddc8 | 8188 | new_contents = NULL; |
51aecdc5 | 8189 | amt = OPD_NDX (sec->size) * sizeof (long); |
74f0fb50 | 8190 | opd = &ppc64_elf_section_data (sec)->u.opd; |
33c0ec9d | 8191 | opd->adjust = bfd_zalloc (sec->owner, amt); |
74f0fb50 AM |
8192 | if (opd->adjust == NULL) |
8193 | return FALSE; | |
1e2f5b6e AM |
8194 | |
8195 | /* This seems a waste of time as input .opd sections are all | |
8196 | zeros as generated by gcc, but I suppose there's no reason | |
8197 | this will always be so. We might start putting something in | |
8198 | the third word of .opd entries. */ | |
8199 | if ((sec->flags & SEC_IN_MEMORY) == 0) | |
8200 | { | |
eea6121a AM |
8201 | bfd_byte *loc; |
8202 | if (!bfd_malloc_and_get_section (ibfd, sec, &loc)) | |
6cdc0ccc | 8203 | { |
eea6121a AM |
8204 | if (loc != NULL) |
8205 | free (loc); | |
50bc7936 | 8206 | error_ret: |
6cdc0ccc AM |
8207 | if (local_syms != NULL |
8208 | && symtab_hdr->contents != (unsigned char *) local_syms) | |
8209 | free (local_syms); | |
6cdc0ccc AM |
8210 | if (elf_section_data (sec)->relocs != relstart) |
8211 | free (relstart); | |
b34976b6 | 8212 | return FALSE; |
6cdc0ccc | 8213 | } |
1e2f5b6e AM |
8214 | sec->contents = loc; |
8215 | sec->flags |= (SEC_IN_MEMORY | SEC_HAS_CONTENTS); | |
8216 | } | |
8217 | ||
8218 | elf_section_data (sec)->relocs = relstart; | |
8219 | ||
3f764659 | 8220 | new_contents = sec->contents; |
3f764659 JJ |
8221 | if (add_aux_fields) |
8222 | { | |
8223 | new_contents = bfd_malloc (sec->size + cnt_16b * 8); | |
8224 | if (new_contents == NULL) | |
8225 | return FALSE; | |
51aecdc5 | 8226 | need_pad = NULL; |
3f764659 | 8227 | } |
b4f4e59f AM |
8228 | wptr = new_contents; |
8229 | rptr = sec->contents; | |
1e2f5b6e | 8230 | write_rel = relstart; |
51aecdc5 | 8231 | for (rel = relstart; rel < relend; ) |
1e2f5b6e | 8232 | { |
50bc7936 AM |
8233 | unsigned long r_symndx; |
8234 | asection *sym_sec; | |
8235 | struct elf_link_hash_entry *h; | |
51aecdc5 | 8236 | struct ppc_link_hash_entry *fdh = NULL; |
50bc7936 | 8237 | Elf_Internal_Sym *sym; |
51aecdc5 AM |
8238 | long opd_ent_size; |
8239 | Elf_Internal_Rela *next_rel; | |
8240 | bfd_boolean skip; | |
50bc7936 AM |
8241 | |
8242 | r_symndx = ELF64_R_SYM (rel->r_info); | |
8243 | if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, | |
d37c89e5 | 8244 | r_symndx, ibfd)) |
50bc7936 AM |
8245 | goto error_ret; |
8246 | ||
51aecdc5 AM |
8247 | next_rel = rel + 2; |
8248 | if (next_rel + 1 == relend | |
8249 | || (next_rel + 2 < relend | |
8250 | && ELF64_R_TYPE (next_rel[2].r_info) == R_PPC64_TOC)) | |
8251 | ++next_rel; | |
8252 | ||
8253 | /* See if the .opd entry is full 24 byte or | |
8254 | 16 byte (with fd_aux entry overlapped with next | |
8255 | fd_func). */ | |
8256 | opd_ent_size = 24; | |
8257 | if (next_rel == relend) | |
1e2f5b6e | 8258 | { |
51aecdc5 | 8259 | if (sec->size == rel->r_offset + 16) |
3f764659 | 8260 | opd_ent_size = 16; |
51aecdc5 AM |
8261 | } |
8262 | else if (next_rel->r_offset == rel->r_offset + 16) | |
8263 | opd_ent_size = 16; | |
3f764659 | 8264 | |
51aecdc5 AM |
8265 | if (h != NULL |
8266 | && h->root.root.string[0] == '.') | |
8267 | { | |
8c5b4e52 AM |
8268 | fdh = ((struct ppc_link_hash_entry *) h)->oh; |
8269 | if (fdh != NULL) | |
8270 | { | |
8271 | fdh = ppc_follow_link (fdh); | |
8272 | if (fdh->elf.root.type != bfd_link_hash_defined | |
8273 | && fdh->elf.root.type != bfd_link_hash_defweak) | |
8274 | fdh = NULL; | |
8275 | } | |
51aecdc5 | 8276 | } |
1e2f5b6e | 8277 | |
51aecdc5 AM |
8278 | skip = (sym_sec->owner != ibfd |
8279 | || sym_sec->output_section == bfd_abs_section_ptr); | |
8280 | if (skip) | |
8281 | { | |
8282 | if (fdh != NULL && sym_sec->owner == ibfd) | |
a4aa0fb7 | 8283 | { |
51aecdc5 AM |
8284 | /* Arrange for the function descriptor sym |
8285 | to be dropped. */ | |
8286 | fdh->elf.root.u.def.value = 0; | |
8287 | fdh->elf.root.u.def.section = sym_sec; | |
a4aa0fb7 | 8288 | } |
51aecdc5 | 8289 | opd->adjust[OPD_NDX (rel->r_offset)] = -1; |
1e2f5b6e | 8290 | |
0e1862bb | 8291 | if (NO_OPD_RELOCS || bfd_link_relocatable (info)) |
51aecdc5 AM |
8292 | rel = next_rel; |
8293 | else | |
8294 | while (1) | |
8295 | { | |
8296 | if (!dec_dynrel_count (rel->r_info, sec, info, | |
8297 | NULL, h, sym)) | |
8298 | goto error_ret; | |
754021d0 | 8299 | |
51aecdc5 AM |
8300 | if (++rel == next_rel) |
8301 | break; | |
1e2f5b6e | 8302 | |
51aecdc5 AM |
8303 | r_symndx = ELF64_R_SYM (rel->r_info); |
8304 | if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, | |
8305 | r_symndx, ibfd)) | |
8306 | goto error_ret; | |
8307 | } | |
50bc7936 AM |
8308 | } |
8309 | else | |
1e2f5b6e | 8310 | { |
51aecdc5 AM |
8311 | /* We'll be keeping this opd entry. */ |
8312 | long adjust; | |
8313 | ||
8314 | if (fdh != NULL) | |
8315 | { | |
8316 | /* Redefine the function descriptor symbol to | |
8317 | this location in the opd section. It is | |
8318 | necessary to update the value here rather | |
8319 | than using an array of adjustments as we do | |
8320 | for local symbols, because various places | |
8321 | in the generic ELF code use the value | |
8322 | stored in u.def.value. */ | |
8323 | fdh->elf.root.u.def.value = wptr - new_contents; | |
8324 | fdh->adjust_done = 1; | |
8325 | } | |
8326 | ||
8327 | /* Local syms are a bit tricky. We could | |
8328 | tweak them as they can be cached, but | |
8329 | we'd need to look through the local syms | |
8330 | for the function descriptor sym which we | |
8331 | don't have at the moment. So keep an | |
8332 | array of adjustments. */ | |
8333 | adjust = (wptr - new_contents) - (rptr - sec->contents); | |
8334 | opd->adjust[OPD_NDX (rel->r_offset)] = adjust; | |
8335 | ||
8336 | if (wptr != rptr) | |
8337 | memcpy (wptr, rptr, opd_ent_size); | |
8338 | wptr += opd_ent_size; | |
8339 | if (add_aux_fields && opd_ent_size == 16) | |
8340 | { | |
8341 | memset (wptr, '\0', 8); | |
8342 | wptr += 8; | |
8343 | } | |
8344 | ||
50bc7936 | 8345 | /* We need to adjust any reloc offsets to point to the |
51aecdc5 AM |
8346 | new opd entries. */ |
8347 | for ( ; rel != next_rel; ++rel) | |
8348 | { | |
8349 | rel->r_offset += adjust; | |
8350 | if (write_rel != rel) | |
8351 | memcpy (write_rel, rel, sizeof (*rel)); | |
8352 | ++write_rel; | |
8353 | } | |
1e2f5b6e | 8354 | } |
51aecdc5 AM |
8355 | |
8356 | rptr += opd_ent_size; | |
1e2f5b6e AM |
8357 | } |
8358 | ||
3f764659 | 8359 | sec->size = wptr - new_contents; |
1e2f5b6e | 8360 | sec->reloc_count = write_rel - relstart; |
3f764659 JJ |
8361 | if (add_aux_fields) |
8362 | { | |
8363 | free (sec->contents); | |
8364 | sec->contents = new_contents; | |
8365 | } | |
8366 | ||
05bf9422 | 8367 | /* Fudge the header size too, as this is used later in |
cdcf6e38 | 8368 | elf_bfd_final_link if we are emitting relocs. */ |
d4730f92 BS |
8369 | rel_hdr = _bfd_elf_single_rel_hdr (sec); |
8370 | rel_hdr->sh_size = sec->reloc_count * rel_hdr->sh_entsize; | |
754021d0 | 8371 | some_edited = TRUE; |
1e2f5b6e | 8372 | } |
6cdc0ccc | 8373 | else if (elf_section_data (sec)->relocs != relstart) |
1e2f5b6e | 8374 | free (relstart); |
6cdc0ccc | 8375 | |
411e1bfb AM |
8376 | if (local_syms != NULL |
8377 | && symtab_hdr->contents != (unsigned char *) local_syms) | |
8378 | { | |
8379 | if (!info->keep_memory) | |
8380 | free (local_syms); | |
8381 | else | |
8382 | symtab_hdr->contents = (unsigned char *) local_syms; | |
8383 | } | |
8384 | } | |
8385 | ||
754021d0 AM |
8386 | if (some_edited) |
8387 | elf_link_hash_traverse (elf_hash_table (info), adjust_opd_syms, NULL); | |
8388 | ||
3f764659 JJ |
8389 | /* If we are doing a final link and the last .opd entry is just 16 byte |
8390 | long, add a 8 byte padding after it. */ | |
0e1862bb | 8391 | if (need_pad != NULL && !bfd_link_relocatable (info)) |
3f764659 JJ |
8392 | { |
8393 | bfd_byte *p; | |
8394 | ||
8395 | if ((need_pad->flags & SEC_IN_MEMORY) == 0) | |
8396 | { | |
8397 | BFD_ASSERT (need_pad->size > 0); | |
8398 | ||
8399 | p = bfd_malloc (need_pad->size + 8); | |
8400 | if (p == NULL) | |
8401 | return FALSE; | |
699733f6 | 8402 | |
2cdcc330 AM |
8403 | if (!bfd_get_section_contents (need_pad->owner, need_pad, |
8404 | p, 0, need_pad->size)) | |
3f764659 JJ |
8405 | return FALSE; |
8406 | ||
8407 | need_pad->contents = p; | |
8408 | need_pad->flags |= (SEC_IN_MEMORY | SEC_HAS_CONTENTS); | |
8409 | } | |
8410 | else | |
8411 | { | |
8412 | p = bfd_realloc (need_pad->contents, need_pad->size + 8); | |
8413 | if (p == NULL) | |
8414 | return FALSE; | |
8415 | ||
8416 | need_pad->contents = p; | |
8417 | } | |
8418 | ||
8419 | memset (need_pad->contents + need_pad->size, 0, 8); | |
8420 | need_pad->size += 8; | |
8421 | } | |
8422 | ||
411e1bfb AM |
8423 | return TRUE; |
8424 | } | |
8425 | ||
3e04d765 AM |
8426 | /* Analyze inline PLT call relocations to see whether calls to locally |
8427 | defined functions can be converted to direct calls. */ | |
8428 | ||
8429 | bfd_boolean | |
8430 | ppc64_elf_inline_plt (struct bfd_link_info *info) | |
8431 | { | |
8432 | struct ppc_link_hash_table *htab; | |
8433 | bfd *ibfd; | |
8434 | asection *sec; | |
8435 | bfd_vma low_vma, high_vma, limit; | |
8436 | ||
8437 | htab = ppc_hash_table (info); | |
8438 | if (htab == NULL) | |
8439 | return FALSE; | |
8440 | ||
8441 | /* A bl insn can reach -0x2000000 to 0x1fffffc. The limit is | |
8442 | reduced somewhat to cater for possible stubs that might be added | |
8443 | between the call and its destination. */ | |
8444 | if (htab->params->group_size < 0) | |
8445 | { | |
8446 | limit = -htab->params->group_size; | |
8447 | if (limit == 1) | |
8448 | limit = 0x1e00000; | |
8449 | } | |
8450 | else | |
8451 | { | |
8452 | limit = htab->params->group_size; | |
8453 | if (limit == 1) | |
8454 | limit = 0x1c00000; | |
8455 | } | |
8456 | ||
8457 | low_vma = -1; | |
8458 | high_vma = 0; | |
8459 | for (sec = info->output_bfd->sections; sec != NULL; sec = sec->next) | |
8460 | if ((sec->flags & (SEC_ALLOC | SEC_CODE)) == (SEC_ALLOC | SEC_CODE)) | |
8461 | { | |
8462 | if (low_vma > sec->vma) | |
8463 | low_vma = sec->vma; | |
8464 | if (high_vma < sec->vma + sec->size) | |
8465 | high_vma = sec->vma + sec->size; | |
8466 | } | |
8467 | ||
8468 | /* If a "bl" can reach anywhere in local code sections, then we can | |
8469 | convert all inline PLT sequences to direct calls when the symbol | |
8470 | is local. */ | |
8471 | if (high_vma - low_vma < limit) | |
8472 | { | |
8473 | htab->can_convert_all_inline_plt = 1; | |
8474 | return TRUE; | |
8475 | } | |
8476 | ||
8477 | /* Otherwise, go looking through relocs for cases where a direct | |
8478 | call won't reach. Mark the symbol on any such reloc to disable | |
8479 | the optimization and keep the PLT entry as it seems likely that | |
8480 | this will be better than creating trampolines. Note that this | |
8481 | will disable the optimization for all inline PLT calls to a | |
8482 | particular symbol, not just those that won't reach. The | |
8483 | difficulty in doing a more precise optimization is that the | |
8484 | linker needs to make a decision depending on whether a | |
8485 | particular R_PPC64_PLTCALL insn can be turned into a direct | |
8486 | call, for each of the R_PPC64_PLTSEQ and R_PPC64_PLT16* insns in | |
8487 | the sequence, and there is nothing that ties those relocs | |
8488 | together except their symbol. */ | |
8489 | ||
8490 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next) | |
8491 | { | |
8492 | Elf_Internal_Shdr *symtab_hdr; | |
8493 | Elf_Internal_Sym *local_syms; | |
8494 | ||
8495 | if (!is_ppc64_elf (ibfd)) | |
8496 | continue; | |
8497 | ||
8498 | local_syms = NULL; | |
8499 | symtab_hdr = &elf_symtab_hdr (ibfd); | |
8500 | ||
8501 | for (sec = ibfd->sections; sec != NULL; sec = sec->next) | |
8502 | if (ppc64_elf_section_data (sec)->has_pltcall | |
8503 | && !bfd_is_abs_section (sec->output_section)) | |
8504 | { | |
8505 | Elf_Internal_Rela *relstart, *rel, *relend; | |
8506 | ||
8507 | /* Read the relocations. */ | |
8508 | relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL, | |
8509 | info->keep_memory); | |
8510 | if (relstart == NULL) | |
8511 | return FALSE; | |
8512 | ||
8513 | relend = relstart + sec->reloc_count; | |
8514 | for (rel = relstart; rel < relend; ) | |
8515 | { | |
8516 | enum elf_ppc64_reloc_type r_type; | |
8517 | unsigned long r_symndx; | |
8518 | asection *sym_sec; | |
8519 | struct elf_link_hash_entry *h; | |
8520 | Elf_Internal_Sym *sym; | |
8521 | unsigned char *tls_maskp; | |
8522 | ||
8523 | r_type = ELF64_R_TYPE (rel->r_info); | |
8524 | if (r_type != R_PPC64_PLTCALL) | |
8525 | continue; | |
8526 | ||
8527 | r_symndx = ELF64_R_SYM (rel->r_info); | |
8528 | if (!get_sym_h (&h, &sym, &sym_sec, &tls_maskp, &local_syms, | |
8529 | r_symndx, ibfd)) | |
8530 | { | |
8531 | if (elf_section_data (sec)->relocs != relstart) | |
8532 | free (relstart); | |
8533 | if (local_syms != NULL | |
2cdcc330 | 8534 | && symtab_hdr->contents != (bfd_byte *) local_syms) |
3e04d765 AM |
8535 | free (local_syms); |
8536 | return FALSE; | |
8537 | } | |
8538 | ||
8539 | if (sym_sec != NULL && sym_sec->output_section != NULL) | |
8540 | { | |
8541 | bfd_vma from, to; | |
8542 | if (h != NULL) | |
8543 | to = h->root.u.def.value; | |
8544 | else | |
8545 | to = sym->st_value; | |
8546 | to += (rel->r_addend | |
8547 | + sym_sec->output_offset | |
8548 | + sym_sec->output_section->vma); | |
8549 | from = (rel->r_offset | |
8550 | + sec->output_offset | |
8551 | + sec->output_section->vma); | |
8552 | if (to - from + limit < 2 * limit) | |
8553 | *tls_maskp &= ~PLT_KEEP; | |
8554 | } | |
8555 | } | |
8556 | if (elf_section_data (sec)->relocs != relstart) | |
8557 | free (relstart); | |
8558 | } | |
8559 | ||
8560 | if (local_syms != NULL | |
8561 | && symtab_hdr->contents != (unsigned char *) local_syms) | |
8562 | { | |
8563 | if (!info->keep_memory) | |
8564 | free (local_syms); | |
8565 | else | |
8566 | symtab_hdr->contents = (unsigned char *) local_syms; | |
8567 | } | |
8568 | } | |
8569 | ||
8570 | return TRUE; | |
8571 | } | |
8572 | ||
e1918d23 | 8573 | /* Set htab->tls_get_addr and call the generic ELF tls_setup function. */ |
411e1bfb | 8574 | |
e1918d23 | 8575 | asection * |
e7d1c40c | 8576 | ppc64_elf_tls_setup (struct bfd_link_info *info) |
411e1bfb | 8577 | { |
411e1bfb AM |
8578 | struct ppc_link_hash_table *htab; |
8579 | ||
411e1bfb | 8580 | htab = ppc_hash_table (info); |
4dfe6ac6 NC |
8581 | if (htab == NULL) |
8582 | return NULL; | |
8583 | ||
ee67d69a AM |
8584 | if (abiversion (info->output_bfd) == 1) |
8585 | htab->opd_abi = 1; | |
8586 | ||
e7d1c40c | 8587 | if (htab->params->no_multi_toc) |
33c0ec9d AM |
8588 | htab->do_multi_toc = 0; |
8589 | else if (!htab->do_multi_toc) | |
e7d1c40c | 8590 | htab->params->no_multi_toc = 1; |
33c0ec9d | 8591 | |
8b5f1ed8 AM |
8592 | /* Default to --no-plt-localentry, as this option can cause problems |
8593 | with symbol interposition. For example, glibc libpthread.so and | |
8594 | libc.so duplicate many pthread symbols, with a fallback | |
8595 | implementation in libc.so. In some cases the fallback does more | |
8596 | work than the pthread implementation. __pthread_condattr_destroy | |
8597 | is one such symbol: the libpthread.so implementation is | |
8598 | localentry:0 while the libc.so implementation is localentry:8. | |
8599 | An app that "cleverly" uses dlopen to only load necessary | |
8600 | libraries at runtime may omit loading libpthread.so when not | |
8601 | running multi-threaded, which then results in the libc.so | |
8602 | fallback symbols being used and ld.so complaining. Now there | |
8603 | are workarounds in ld (see non_zero_localentry) to detect the | |
8604 | pthread situation, but that may not be the only case where | |
8605 | --plt-localentry can cause trouble. */ | |
f378ab09 | 8606 | if (htab->params->plt_localentry0 < 0) |
8b5f1ed8 | 8607 | htab->params->plt_localentry0 = 0; |
d44c746a AM |
8608 | if (htab->params->plt_localentry0 |
8609 | && elf_link_hash_lookup (&htab->elf, "GLIBC_2.26", | |
8610 | FALSE, FALSE, FALSE) == NULL) | |
cf97bcb0 AM |
8611 | _bfd_error_handler |
8612 | (_("warning: --plt-localentry is especially dangerous without " | |
8613 | "ld.so support to detect ABI violations")); | |
f378ab09 | 8614 | |
3a71aa26 AM |
8615 | htab->tls_get_addr = ((struct ppc_link_hash_entry *) |
8616 | elf_link_hash_lookup (&htab->elf, ".__tls_get_addr", | |
8617 | FALSE, FALSE, TRUE)); | |
a7f2871e AM |
8618 | /* Move dynamic linking info to the function descriptor sym. */ |
8619 | if (htab->tls_get_addr != NULL) | |
8620 | func_desc_adjust (&htab->tls_get_addr->elf, info); | |
3a71aa26 AM |
8621 | htab->tls_get_addr_fd = ((struct ppc_link_hash_entry *) |
8622 | elf_link_hash_lookup (&htab->elf, "__tls_get_addr", | |
8623 | FALSE, FALSE, TRUE)); | |
7c9cf415 | 8624 | if (htab->params->tls_get_addr_opt) |
a7f2871e AM |
8625 | { |
8626 | struct elf_link_hash_entry *opt, *opt_fd, *tga, *tga_fd; | |
8627 | ||
8628 | opt = elf_link_hash_lookup (&htab->elf, ".__tls_get_addr_opt", | |
8629 | FALSE, FALSE, TRUE); | |
8630 | if (opt != NULL) | |
8631 | func_desc_adjust (opt, info); | |
8632 | opt_fd = elf_link_hash_lookup (&htab->elf, "__tls_get_addr_opt", | |
8633 | FALSE, FALSE, TRUE); | |
8634 | if (opt_fd != NULL | |
8635 | && (opt_fd->root.type == bfd_link_hash_defined | |
8636 | || opt_fd->root.type == bfd_link_hash_defweak)) | |
8637 | { | |
8638 | /* If glibc supports an optimized __tls_get_addr call stub, | |
8639 | signalled by the presence of __tls_get_addr_opt, and we'll | |
8640 | be calling __tls_get_addr via a plt call stub, then | |
8641 | make __tls_get_addr point to __tls_get_addr_opt. */ | |
8642 | tga_fd = &htab->tls_get_addr_fd->elf; | |
8643 | if (htab->elf.dynamic_sections_created | |
8644 | && tga_fd != NULL | |
8645 | && (tga_fd->type == STT_FUNC | |
8646 | || tga_fd->needs_plt) | |
8647 | && !(SYMBOL_CALLS_LOCAL (info, tga_fd) | |
21d68fcd | 8648 | || UNDEFWEAK_NO_DYNAMIC_RELOC (info, tga_fd))) |
a7f2871e AM |
8649 | { |
8650 | struct plt_entry *ent; | |
8651 | ||
8652 | for (ent = tga_fd->plt.plist; ent != NULL; ent = ent->next) | |
8653 | if (ent->plt.refcount > 0) | |
8654 | break; | |
8655 | if (ent != NULL) | |
8656 | { | |
8657 | tga_fd->root.type = bfd_link_hash_indirect; | |
8658 | tga_fd->root.u.i.link = &opt_fd->root; | |
8659 | ppc64_elf_copy_indirect_symbol (info, opt_fd, tga_fd); | |
b531344c | 8660 | opt_fd->mark = 1; |
a7f2871e AM |
8661 | if (opt_fd->dynindx != -1) |
8662 | { | |
8663 | /* Use __tls_get_addr_opt in dynamic relocations. */ | |
8664 | opt_fd->dynindx = -1; | |
8665 | _bfd_elf_strtab_delref (elf_hash_table (info)->dynstr, | |
8666 | opt_fd->dynstr_index); | |
8667 | if (!bfd_elf_link_record_dynamic_symbol (info, opt_fd)) | |
854b41e7 | 8668 | return NULL; |
a7f2871e | 8669 | } |
2cdcc330 AM |
8670 | htab->tls_get_addr_fd |
8671 | = (struct ppc_link_hash_entry *) opt_fd; | |
a7f2871e AM |
8672 | tga = &htab->tls_get_addr->elf; |
8673 | if (opt != NULL && tga != NULL) | |
8674 | { | |
8675 | tga->root.type = bfd_link_hash_indirect; | |
8676 | tga->root.u.i.link = &opt->root; | |
8677 | ppc64_elf_copy_indirect_symbol (info, opt, tga); | |
b531344c | 8678 | opt->mark = 1; |
a7f2871e AM |
8679 | _bfd_elf_link_hash_hide_symbol (info, opt, |
8680 | tga->forced_local); | |
8681 | htab->tls_get_addr = (struct ppc_link_hash_entry *) opt; | |
8682 | } | |
8683 | htab->tls_get_addr_fd->oh = htab->tls_get_addr; | |
8684 | htab->tls_get_addr_fd->is_func_descriptor = 1; | |
8685 | if (htab->tls_get_addr != NULL) | |
8686 | { | |
8687 | htab->tls_get_addr->oh = htab->tls_get_addr_fd; | |
8688 | htab->tls_get_addr->is_func = 1; | |
8689 | } | |
8690 | } | |
8691 | } | |
8692 | } | |
7c9cf415 AM |
8693 | else if (htab->params->tls_get_addr_opt < 0) |
8694 | htab->params->tls_get_addr_opt = 0; | |
a7f2871e | 8695 | } |
33c0ec9d | 8696 | return _bfd_elf_tls_setup (info->output_bfd, info); |
3a71aa26 | 8697 | } |
8387904d | 8698 | |
3a71aa26 AM |
8699 | /* Return TRUE iff REL is a branch reloc with a global symbol matching |
8700 | HASH1 or HASH2. */ | |
8387904d | 8701 | |
3a71aa26 AM |
8702 | static bfd_boolean |
8703 | branch_reloc_hash_match (const bfd *ibfd, | |
8704 | const Elf_Internal_Rela *rel, | |
8705 | const struct ppc_link_hash_entry *hash1, | |
8706 | const struct ppc_link_hash_entry *hash2) | |
8707 | { | |
8708 | Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (ibfd); | |
8709 | enum elf_ppc64_reloc_type r_type = ELF64_R_TYPE (rel->r_info); | |
8710 | unsigned int r_symndx = ELF64_R_SYM (rel->r_info); | |
8711 | ||
e054468f | 8712 | if (r_symndx >= symtab_hdr->sh_info && is_branch_reloc (r_type)) |
8387904d | 8713 | { |
3a71aa26 AM |
8714 | struct elf_link_hash_entry **sym_hashes = elf_sym_hashes (ibfd); |
8715 | struct elf_link_hash_entry *h; | |
8387904d | 8716 | |
3a71aa26 | 8717 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; |
b31867b6 | 8718 | h = elf_follow_link (h); |
3a71aa26 AM |
8719 | if (h == &hash1->elf || h == &hash2->elf) |
8720 | return TRUE; | |
a48ebf4d | 8721 | } |
3a71aa26 | 8722 | return FALSE; |
951fd09b | 8723 | } |
411e1bfb | 8724 | |
951fd09b AM |
8725 | /* Run through all the TLS relocs looking for optimization |
8726 | opportunities. The linker has been hacked (see ppc64elf.em) to do | |
8727 | a preliminary section layout so that we know the TLS segment | |
8728 | offsets. We can't optimize earlier because some optimizations need | |
8729 | to know the tp offset, and we need to optimize before allocating | |
8730 | dynamic relocations. */ | |
8731 | ||
8732 | bfd_boolean | |
33c0ec9d | 8733 | ppc64_elf_tls_optimize (struct bfd_link_info *info) |
951fd09b AM |
8734 | { |
8735 | bfd *ibfd; | |
8736 | asection *sec; | |
8737 | struct ppc_link_hash_table *htab; | |
663a1470 | 8738 | unsigned char *toc_ref; |
102890f0 | 8739 | int pass; |
951fd09b | 8740 | |
3cbc1e5e | 8741 | if (!bfd_link_executable (info)) |
411e1bfb AM |
8742 | return TRUE; |
8743 | ||
951fd09b | 8744 | htab = ppc_hash_table (info); |
4dfe6ac6 NC |
8745 | if (htab == NULL) |
8746 | return FALSE; | |
8747 | ||
663a1470 AM |
8748 | /* Make two passes over the relocs. On the first pass, mark toc |
8749 | entries involved with tls relocs, and check that tls relocs | |
8750 | involved in setting up a tls_get_addr call are indeed followed by | |
8751 | such a call. If they are not, we can't do any tls optimization. | |
8752 | On the second pass twiddle tls_mask flags to notify | |
8753 | relocate_section that optimization can be done, and adjust got | |
8754 | and plt refcounts. */ | |
8755 | toc_ref = NULL; | |
8756 | for (pass = 0; pass < 2; ++pass) | |
c72f2fb2 | 8757 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next) |
663a1470 AM |
8758 | { |
8759 | Elf_Internal_Sym *locsyms = NULL; | |
8760 | asection *toc = bfd_get_section_by_name (ibfd, ".toc"); | |
8761 | ||
102890f0 AM |
8762 | for (sec = ibfd->sections; sec != NULL; sec = sec->next) |
8763 | if (sec->has_tls_reloc && !bfd_is_abs_section (sec->output_section)) | |
8764 | { | |
8765 | Elf_Internal_Rela *relstart, *rel, *relend; | |
663a1470 | 8766 | bfd_boolean found_tls_get_addr_arg = 0; |
411e1bfb | 8767 | |
102890f0 AM |
8768 | /* Read the relocations. */ |
8769 | relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL, | |
8770 | info->keep_memory); | |
8771 | if (relstart == NULL) | |
2915c55b JK |
8772 | { |
8773 | free (toc_ref); | |
8774 | return FALSE; | |
8775 | } | |
411e1bfb | 8776 | |
102890f0 AM |
8777 | relend = relstart + sec->reloc_count; |
8778 | for (rel = relstart; rel < relend; rel++) | |
8779 | { | |
8780 | enum elf_ppc64_reloc_type r_type; | |
8781 | unsigned long r_symndx; | |
8782 | struct elf_link_hash_entry *h; | |
8783 | Elf_Internal_Sym *sym; | |
8784 | asection *sym_sec; | |
f961d9dd AM |
8785 | unsigned char *tls_mask; |
8786 | unsigned char tls_set, tls_clear, tls_type = 0; | |
102890f0 AM |
8787 | bfd_vma value; |
8788 | bfd_boolean ok_tprel, is_local; | |
8789 | long toc_ref_index = 0; | |
8790 | int expecting_tls_get_addr = 0; | |
663a1470 | 8791 | bfd_boolean ret = FALSE; |
411e1bfb | 8792 | |
102890f0 AM |
8793 | r_symndx = ELF64_R_SYM (rel->r_info); |
8794 | if (!get_sym_h (&h, &sym, &sym_sec, &tls_mask, &locsyms, | |
8795 | r_symndx, ibfd)) | |
8796 | { | |
8797 | err_free_rel: | |
8798 | if (elf_section_data (sec)->relocs != relstart) | |
8799 | free (relstart); | |
8800 | if (toc_ref != NULL) | |
8801 | free (toc_ref); | |
8802 | if (locsyms != NULL | |
0ffa91dd | 8803 | && (elf_symtab_hdr (ibfd).contents |
102890f0 AM |
8804 | != (unsigned char *) locsyms)) |
8805 | free (locsyms); | |
663a1470 | 8806 | return ret; |
102890f0 | 8807 | } |
411e1bfb | 8808 | |
102890f0 AM |
8809 | if (h != NULL) |
8810 | { | |
766bc656 AM |
8811 | if (h->root.type == bfd_link_hash_defined |
8812 | || h->root.type == bfd_link_hash_defweak) | |
8813 | value = h->root.u.def.value; | |
8814 | else if (h->root.type == bfd_link_hash_undefweak) | |
8815 | value = 0; | |
8816 | else | |
663a1470 AM |
8817 | { |
8818 | found_tls_get_addr_arg = 0; | |
8819 | continue; | |
8820 | } | |
102890f0 AM |
8821 | } |
8822 | else | |
8823 | /* Symbols referenced by TLS relocs must be of type | |
8824 | STT_TLS. So no need for .opd local sym adjust. */ | |
8825 | value = sym->st_value; | |
8826 | ||
8827 | ok_tprel = FALSE; | |
8828 | is_local = FALSE; | |
8829 | if (h == NULL | |
8830 | || !h->def_dynamic) | |
8831 | { | |
8832 | is_local = TRUE; | |
766bc656 AM |
8833 | if (h != NULL |
8834 | && h->root.type == bfd_link_hash_undefweak) | |
8835 | ok_tprel = TRUE; | |
c27b8c2a AM |
8836 | else if (sym_sec != NULL |
8837 | && sym_sec->output_section != NULL) | |
766bc656 AM |
8838 | { |
8839 | value += sym_sec->output_offset; | |
8840 | value += sym_sec->output_section->vma; | |
8841 | value -= htab->elf.tls_sec->vma; | |
8842 | ok_tprel = (value + TP_OFFSET + ((bfd_vma) 1 << 31) | |
8843 | < (bfd_vma) 1 << 32); | |
8844 | } | |
102890f0 | 8845 | } |
951fd09b | 8846 | |
102890f0 | 8847 | r_type = ELF64_R_TYPE (rel->r_info); |
663a1470 AM |
8848 | /* If this section has old-style __tls_get_addr calls |
8849 | without marker relocs, then check that each | |
8850 | __tls_get_addr call reloc is preceded by a reloc | |
8851 | that conceivably belongs to the __tls_get_addr arg | |
8852 | setup insn. If we don't find matching arg setup | |
8853 | relocs, don't do any tls optimization. */ | |
8854 | if (pass == 0 | |
8855 | && sec->has_tls_get_addr_call | |
8856 | && h != NULL | |
8857 | && (h == &htab->tls_get_addr->elf | |
8858 | || h == &htab->tls_get_addr_fd->elf) | |
8859 | && !found_tls_get_addr_arg | |
8860 | && is_branch_reloc (r_type)) | |
8861 | { | |
25f53a85 | 8862 | info->callbacks->minfo (_("%H __tls_get_addr lost arg, " |
663a1470 AM |
8863 | "TLS optimization disabled\n"), |
8864 | ibfd, sec, rel->r_offset); | |
8865 | ret = TRUE; | |
8866 | goto err_free_rel; | |
8867 | } | |
8868 | ||
8869 | found_tls_get_addr_arg = 0; | |
102890f0 AM |
8870 | switch (r_type) |
8871 | { | |
8872 | case R_PPC64_GOT_TLSLD16: | |
8873 | case R_PPC64_GOT_TLSLD16_LO: | |
8874 | expecting_tls_get_addr = 1; | |
663a1470 | 8875 | found_tls_get_addr_arg = 1; |
1a0670f3 | 8876 | /* Fall through. */ |
102890f0 AM |
8877 | |
8878 | case R_PPC64_GOT_TLSLD16_HI: | |
8879 | case R_PPC64_GOT_TLSLD16_HA: | |
8880 | /* These relocs should never be against a symbol | |
8881 | defined in a shared lib. Leave them alone if | |
8882 | that turns out to be the case. */ | |
8883 | if (!is_local) | |
8884 | continue; | |
411e1bfb | 8885 | |
102890f0 | 8886 | /* LD -> LE */ |
411e1bfb | 8887 | tls_set = 0; |
102890f0 AM |
8888 | tls_clear = TLS_LD; |
8889 | tls_type = TLS_TLS | TLS_LD; | |
8890 | break; | |
411e1bfb | 8891 | |
102890f0 AM |
8892 | case R_PPC64_GOT_TLSGD16: |
8893 | case R_PPC64_GOT_TLSGD16_LO: | |
8894 | expecting_tls_get_addr = 1; | |
663a1470 | 8895 | found_tls_get_addr_arg = 1; |
1a0670f3 | 8896 | /* Fall through. */ |
102890f0 AM |
8897 | |
8898 | case R_PPC64_GOT_TLSGD16_HI: | |
8899 | case R_PPC64_GOT_TLSGD16_HA: | |
8900 | if (ok_tprel) | |
8901 | /* GD -> LE */ | |
411e1bfb | 8902 | tls_set = 0; |
102890f0 AM |
8903 | else |
8904 | /* GD -> IE */ | |
8905 | tls_set = TLS_TLS | TLS_TPRELGD; | |
8906 | tls_clear = TLS_GD; | |
8907 | tls_type = TLS_TLS | TLS_GD; | |
8908 | break; | |
8909 | ||
8910 | case R_PPC64_GOT_TPREL16_DS: | |
8911 | case R_PPC64_GOT_TPREL16_LO_DS: | |
8912 | case R_PPC64_GOT_TPREL16_HI: | |
8913 | case R_PPC64_GOT_TPREL16_HA: | |
8914 | if (ok_tprel) | |
8915 | { | |
8916 | /* IE -> LE */ | |
8917 | tls_set = 0; | |
8918 | tls_clear = TLS_TPREL; | |
8919 | tls_type = TLS_TLS | TLS_TPREL; | |
8920 | break; | |
8921 | } | |
411e1bfb AM |
8922 | continue; |
8923 | ||
727fc41e AM |
8924 | case R_PPC64_TLSGD: |
8925 | case R_PPC64_TLSLD: | |
23cedd1d AM |
8926 | if (rel + 1 < relend |
8927 | && is_plt_seq_reloc (ELF64_R_TYPE (rel[1].r_info))) | |
8928 | { | |
8929 | if (pass != 0 | |
2cdcc330 AM |
8930 | && (ELF64_R_TYPE (rel[1].r_info) |
8931 | != R_PPC64_PLTSEQ)) | |
23cedd1d AM |
8932 | { |
8933 | r_symndx = ELF64_R_SYM (rel[1].r_info); | |
8934 | if (!get_sym_h (&h, NULL, NULL, NULL, &locsyms, | |
2cdcc330 | 8935 | r_symndx, ibfd)) |
23cedd1d AM |
8936 | goto err_free_rel; |
8937 | if (h != NULL) | |
8938 | { | |
8939 | struct plt_entry *ent = NULL; | |
8940 | ||
8941 | for (ent = h->plt.plist; | |
8942 | ent != NULL; | |
8943 | ent = ent->next) | |
8944 | if (ent->addend == rel[1].r_addend) | |
8945 | break; | |
8946 | ||
8947 | if (ent != NULL | |
8948 | && ent->plt.refcount > 0) | |
8949 | ent->plt.refcount -= 1; | |
8950 | } | |
8951 | } | |
8952 | continue; | |
8953 | } | |
663a1470 | 8954 | found_tls_get_addr_arg = 1; |
1a0670f3 | 8955 | /* Fall through. */ |
663a1470 AM |
8956 | |
8957 | case R_PPC64_TLS: | |
8958 | case R_PPC64_TOC16: | |
8959 | case R_PPC64_TOC16_LO: | |
102890f0 AM |
8960 | if (sym_sec == NULL || sym_sec != toc) |
8961 | continue; | |
8962 | ||
8963 | /* Mark this toc entry as referenced by a TLS | |
8964 | code sequence. We can do that now in the | |
8965 | case of R_PPC64_TLS, and after checking for | |
8966 | tls_get_addr for the TOC16 relocs. */ | |
8967 | if (toc_ref == NULL) | |
2cdcc330 AM |
8968 | toc_ref |
8969 | = bfd_zmalloc (toc->output_section->rawsize / 8); | |
663a1470 AM |
8970 | if (toc_ref == NULL) |
8971 | goto err_free_rel; | |
8972 | ||
102890f0 AM |
8973 | if (h != NULL) |
8974 | value = h->root.u.def.value; | |
8975 | else | |
8976 | value = sym->st_value; | |
8977 | value += rel->r_addend; | |
73242275 AM |
8978 | if (value % 8 != 0) |
8979 | continue; | |
8980 | BFD_ASSERT (value < toc->size | |
8981 | && toc->output_offset % 8 == 0); | |
663a1470 | 8982 | toc_ref_index = (value + toc->output_offset) / 8; |
727fc41e AM |
8983 | if (r_type == R_PPC64_TLS |
8984 | || r_type == R_PPC64_TLSGD | |
8985 | || r_type == R_PPC64_TLSLD) | |
102890f0 AM |
8986 | { |
8987 | toc_ref[toc_ref_index] = 1; | |
8988 | continue; | |
8989 | } | |
8990 | ||
8991 | if (pass != 0 && toc_ref[toc_ref_index] == 0) | |
8992 | continue; | |
8993 | ||
8994 | tls_set = 0; | |
8995 | tls_clear = 0; | |
8996 | expecting_tls_get_addr = 2; | |
8997 | break; | |
8998 | ||
8999 | case R_PPC64_TPREL64: | |
9000 | if (pass == 0 | |
9001 | || sec != toc | |
9002 | || toc_ref == NULL | |
663a1470 | 9003 | || !toc_ref[(rel->r_offset + toc->output_offset) / 8]) |
102890f0 AM |
9004 | continue; |
9005 | if (ok_tprel) | |
9006 | { | |
9007 | /* IE -> LE */ | |
9008 | tls_set = TLS_EXPLICIT; | |
9009 | tls_clear = TLS_TPREL; | |
9010 | break; | |
9011 | } | |
9012 | continue; | |
9013 | ||
9014 | case R_PPC64_DTPMOD64: | |
9015 | if (pass == 0 | |
9016 | || sec != toc | |
9017 | || toc_ref == NULL | |
663a1470 | 9018 | || !toc_ref[(rel->r_offset + toc->output_offset) / 8]) |
102890f0 AM |
9019 | continue; |
9020 | if (rel + 1 < relend | |
9021 | && (rel[1].r_info | |
9022 | == ELF64_R_INFO (r_symndx, R_PPC64_DTPREL64)) | |
9023 | && rel[1].r_offset == rel->r_offset + 8) | |
9024 | { | |
9025 | if (ok_tprel) | |
9026 | /* GD -> LE */ | |
9027 | tls_set = TLS_EXPLICIT | TLS_GD; | |
9028 | else | |
9029 | /* GD -> IE */ | |
9030 | tls_set = TLS_EXPLICIT | TLS_GD | TLS_TPRELGD; | |
9031 | tls_clear = TLS_GD; | |
9032 | } | |
9033 | else | |
9034 | { | |
9035 | if (!is_local) | |
9036 | continue; | |
9037 | ||
9038 | /* LD -> LE */ | |
9039 | tls_set = TLS_EXPLICIT; | |
9040 | tls_clear = TLS_LD; | |
9041 | } | |
9042 | break; | |
9043 | ||
9044 | default: | |
9045 | continue; | |
9046 | } | |
9047 | ||
9048 | if (pass == 0) | |
9049 | { | |
727fc41e AM |
9050 | if (!expecting_tls_get_addr |
9051 | || !sec->has_tls_get_addr_call) | |
102890f0 AM |
9052 | continue; |
9053 | ||
3a71aa26 AM |
9054 | if (rel + 1 < relend |
9055 | && branch_reloc_hash_match (ibfd, rel + 1, | |
9056 | htab->tls_get_addr, | |
9057 | htab->tls_get_addr_fd)) | |
102890f0 | 9058 | { |
3a71aa26 | 9059 | if (expecting_tls_get_addr == 2) |
102890f0 | 9060 | { |
3a71aa26 | 9061 | /* Check for toc tls entries. */ |
f961d9dd | 9062 | unsigned char *toc_tls; |
3a71aa26 AM |
9063 | int retval; |
9064 | ||
9065 | retval = get_tls_mask (&toc_tls, NULL, NULL, | |
9066 | &locsyms, | |
9067 | rel, ibfd); | |
9068 | if (retval == 0) | |
9069 | goto err_free_rel; | |
663a1470 AM |
9070 | if (toc_tls != NULL) |
9071 | { | |
37da22e5 AM |
9072 | if ((*toc_tls & TLS_TLS) != 0 |
9073 | && ((*toc_tls & (TLS_GD | TLS_LD)) != 0)) | |
663a1470 AM |
9074 | found_tls_get_addr_arg = 1; |
9075 | if (retval > 1) | |
9076 | toc_ref[toc_ref_index] = 1; | |
9077 | } | |
102890f0 | 9078 | } |
3a71aa26 | 9079 | continue; |
102890f0 AM |
9080 | } |
9081 | ||
102890f0 AM |
9082 | /* Uh oh, we didn't find the expected call. We |
9083 | could just mark this symbol to exclude it | |
9084 | from tls optimization but it's safer to skip | |
663a1470 | 9085 | the entire optimization. */ |
695344c0 | 9086 | /* xgettext:c-format */ |
25f53a85 | 9087 | info->callbacks->minfo (_("%H arg lost __tls_get_addr, " |
663a1470 AM |
9088 | "TLS optimization disabled\n"), |
9089 | ibfd, sec, rel->r_offset); | |
9090 | ret = TRUE; | |
9091 | goto err_free_rel; | |
102890f0 AM |
9092 | } |
9093 | ||
37da22e5 AM |
9094 | /* If we don't have old-style __tls_get_addr calls |
9095 | without TLSGD/TLSLD marker relocs, and we haven't | |
9096 | found a new-style __tls_get_addr call with a | |
9097 | marker for this symbol, then we either have a | |
9098 | broken object file or an -mlongcall style | |
9099 | indirect call to __tls_get_addr without a marker. | |
9100 | Disable optimization in this case. */ | |
9101 | if ((tls_clear & (TLS_GD | TLS_LD)) != 0 | |
9102 | && (tls_set & TLS_EXPLICIT) == 0 | |
9103 | && !sec->has_tls_get_addr_call | |
9104 | && ((*tls_mask & (TLS_TLS | TLS_MARK)) | |
9105 | != (TLS_TLS | TLS_MARK))) | |
9106 | continue; | |
9107 | ||
23cedd1d | 9108 | if (expecting_tls_get_addr) |
102890f0 | 9109 | { |
23cedd1d AM |
9110 | struct plt_entry *ent = NULL; |
9111 | ||
9112 | if (htab->tls_get_addr != NULL) | |
9113 | for (ent = htab->tls_get_addr->elf.plt.plist; | |
9114 | ent != NULL; | |
9115 | ent = ent->next) | |
9116 | if (ent->addend == 0) | |
102890f0 | 9117 | break; |
411e1bfb | 9118 | |
23cedd1d AM |
9119 | if (ent == NULL && htab->tls_get_addr_fd != NULL) |
9120 | for (ent = htab->tls_get_addr_fd->elf.plt.plist; | |
9121 | ent != NULL; | |
9122 | ent = ent->next) | |
9123 | if (ent->addend == 0) | |
102890f0 | 9124 | break; |
23cedd1d AM |
9125 | |
9126 | if (ent != NULL | |
9127 | && ent->plt.refcount > 0) | |
9128 | ent->plt.refcount -= 1; | |
102890f0 | 9129 | } |
411e1bfb | 9130 | |
102890f0 | 9131 | if (tls_clear == 0) |
30038c59 AM |
9132 | continue; |
9133 | ||
102890f0 AM |
9134 | if ((tls_set & TLS_EXPLICIT) == 0) |
9135 | { | |
9136 | struct got_entry *ent; | |
411e1bfb | 9137 | |
102890f0 AM |
9138 | /* Adjust got entry for this reloc. */ |
9139 | if (h != NULL) | |
9140 | ent = h->got.glist; | |
9141 | else | |
9142 | ent = elf_local_got_ents (ibfd)[r_symndx]; | |
411e1bfb | 9143 | |
102890f0 AM |
9144 | for (; ent != NULL; ent = ent->next) |
9145 | if (ent->addend == rel->r_addend | |
9146 | && ent->owner == ibfd | |
9147 | && ent->tls_type == tls_type) | |
9148 | break; | |
9149 | if (ent == NULL) | |
9150 | abort (); | |
411e1bfb | 9151 | |
102890f0 AM |
9152 | if (tls_set == 0) |
9153 | { | |
9154 | /* We managed to get rid of a got entry. */ | |
9155 | if (ent->got.refcount > 0) | |
9156 | ent->got.refcount -= 1; | |
9157 | } | |
9158 | } | |
9159 | else | |
9160 | { | |
9161 | /* If we got rid of a DTPMOD/DTPREL reloc pair then | |
9162 | we'll lose one or two dyn relocs. */ | |
9163 | if (!dec_dynrel_count (rel->r_info, sec, info, | |
19e08130 | 9164 | NULL, h, sym)) |
102890f0 | 9165 | return FALSE; |
411e1bfb | 9166 | |
102890f0 AM |
9167 | if (tls_set == (TLS_EXPLICIT | TLS_GD)) |
9168 | { | |
9169 | if (!dec_dynrel_count ((rel + 1)->r_info, sec, info, | |
19e08130 | 9170 | NULL, h, sym)) |
102890f0 AM |
9171 | return FALSE; |
9172 | } | |
9173 | } | |
411e1bfb | 9174 | |
102890f0 AM |
9175 | *tls_mask |= tls_set; |
9176 | *tls_mask &= ~tls_clear; | |
9177 | } | |
8c1d1bb8 | 9178 | |
102890f0 AM |
9179 | if (elf_section_data (sec)->relocs != relstart) |
9180 | free (relstart); | |
9181 | } | |
411e1bfb | 9182 | |
663a1470 AM |
9183 | if (locsyms != NULL |
9184 | && (elf_symtab_hdr (ibfd).contents != (unsigned char *) locsyms)) | |
9185 | { | |
9186 | if (!info->keep_memory) | |
9187 | free (locsyms); | |
9188 | else | |
9189 | elf_symtab_hdr (ibfd).contents = (unsigned char *) locsyms; | |
9190 | } | |
9191 | } | |
411e1bfb | 9192 | |
663a1470 AM |
9193 | if (toc_ref != NULL) |
9194 | free (toc_ref); | |
9a23f96e | 9195 | htab->do_tls_opt = 1; |
b34976b6 | 9196 | return TRUE; |
1e2f5b6e | 9197 | } |
b34976b6 | 9198 | |
c5614fa4 AM |
9199 | /* Called via elf_link_hash_traverse from ppc64_elf_edit_toc to adjust |
9200 | the values of any global symbols in a toc section that has been | |
9201 | edited. Globals in toc sections should be a rarity, so this function | |
9202 | sets a flag if any are found in toc sections other than the one just | |
de194d85 | 9203 | edited, so that further hash table traversals can be avoided. */ |
c5614fa4 AM |
9204 | |
9205 | struct adjust_toc_info | |
9206 | { | |
9207 | asection *toc; | |
9208 | unsigned long *skip; | |
9209 | bfd_boolean global_toc_syms; | |
9210 | }; | |
9211 | ||
ba761f19 AM |
9212 | enum toc_skip_enum { ref_from_discarded = 1, can_optimize = 2 }; |
9213 | ||
c5614fa4 AM |
9214 | static bfd_boolean |
9215 | adjust_toc_syms (struct elf_link_hash_entry *h, void *inf) | |
9216 | { | |
9217 | struct ppc_link_hash_entry *eh; | |
9218 | struct adjust_toc_info *toc_inf = (struct adjust_toc_info *) inf; | |
854b41e7 | 9219 | unsigned long i; |
c5614fa4 | 9220 | |
c5614fa4 AM |
9221 | if (h->root.type != bfd_link_hash_defined |
9222 | && h->root.type != bfd_link_hash_defweak) | |
9223 | return TRUE; | |
9224 | ||
9225 | eh = (struct ppc_link_hash_entry *) h; | |
9226 | if (eh->adjust_done) | |
9227 | return TRUE; | |
9228 | ||
9229 | if (eh->elf.root.u.def.section == toc_inf->toc) | |
9230 | { | |
854b41e7 AM |
9231 | if (eh->elf.root.u.def.value > toc_inf->toc->rawsize) |
9232 | i = toc_inf->toc->rawsize >> 3; | |
c5614fa4 | 9233 | else |
854b41e7 AM |
9234 | i = eh->elf.root.u.def.value >> 3; |
9235 | ||
ba761f19 | 9236 | if ((toc_inf->skip[i] & (ref_from_discarded | can_optimize)) != 0) |
c5614fa4 | 9237 | { |
4eca0228 | 9238 | _bfd_error_handler |
854b41e7 AM |
9239 | (_("%s defined on removed toc entry"), eh->elf.root.root.string); |
9240 | do | |
9241 | ++i; | |
ba761f19 | 9242 | while ((toc_inf->skip[i] & (ref_from_discarded | can_optimize)) != 0); |
854b41e7 | 9243 | eh->elf.root.u.def.value = (bfd_vma) i << 3; |
c5614fa4 | 9244 | } |
854b41e7 AM |
9245 | |
9246 | eh->elf.root.u.def.value -= toc_inf->skip[i]; | |
c5614fa4 AM |
9247 | eh->adjust_done = 1; |
9248 | } | |
9249 | else if (strcmp (eh->elf.root.u.def.section->name, ".toc") == 0) | |
9250 | toc_inf->global_toc_syms = TRUE; | |
9251 | ||
9252 | return TRUE; | |
9253 | } | |
9254 | ||
39eeab25 AM |
9255 | /* Return TRUE iff INSN with a relocation of R_TYPE is one we expect |
9256 | on a _LO variety toc/got reloc. */ | |
560c8763 AM |
9257 | |
9258 | static bfd_boolean | |
39eeab25 | 9259 | ok_lo_toc_insn (unsigned int insn, enum elf_ppc64_reloc_type r_type) |
560c8763 | 9260 | { |
39eeab25 AM |
9261 | return ((insn & (0x3f << 26)) == 12u << 26 /* addic */ |
9262 | || (insn & (0x3f << 26)) == 14u << 26 /* addi */ | |
560c8763 AM |
9263 | || (insn & (0x3f << 26)) == 32u << 26 /* lwz */ |
9264 | || (insn & (0x3f << 26)) == 34u << 26 /* lbz */ | |
9265 | || (insn & (0x3f << 26)) == 36u << 26 /* stw */ | |
9266 | || (insn & (0x3f << 26)) == 38u << 26 /* stb */ | |
9267 | || (insn & (0x3f << 26)) == 40u << 26 /* lhz */ | |
9268 | || (insn & (0x3f << 26)) == 42u << 26 /* lha */ | |
9269 | || (insn & (0x3f << 26)) == 44u << 26 /* sth */ | |
9270 | || (insn & (0x3f << 26)) == 46u << 26 /* lmw */ | |
9271 | || (insn & (0x3f << 26)) == 47u << 26 /* stmw */ | |
9272 | || (insn & (0x3f << 26)) == 48u << 26 /* lfs */ | |
9273 | || (insn & (0x3f << 26)) == 50u << 26 /* lfd */ | |
9274 | || (insn & (0x3f << 26)) == 52u << 26 /* stfs */ | |
9275 | || (insn & (0x3f << 26)) == 54u << 26 /* stfd */ | |
39eeab25 AM |
9276 | || (insn & (0x3f << 26)) == 56u << 26 /* lq,lfq */ |
9277 | || ((insn & (0x3f << 26)) == 57u << 26 /* lxsd,lxssp,lfdp */ | |
9278 | /* Exclude lfqu by testing reloc. If relocs are ever | |
9279 | defined for the reduced D field in psq_lu then those | |
9280 | will need testing too. */ | |
9281 | && r_type != R_PPC64_TOC16_LO && r_type != R_PPC64_GOT16_LO) | |
9282 | || ((insn & (0x3f << 26)) == 58u << 26 /* ld,lwa */ | |
9283 | && (insn & 1) == 0) | |
9284 | || (insn & (0x3f << 26)) == 60u << 26 /* stfq */ | |
9285 | || ((insn & (0x3f << 26)) == 61u << 26 /* lxv,stx{v,sd,ssp},stfdp */ | |
9286 | /* Exclude stfqu. psq_stu as above for psq_lu. */ | |
9287 | && r_type != R_PPC64_TOC16_LO && r_type != R_PPC64_GOT16_LO) | |
9288 | || ((insn & (0x3f << 26)) == 62u << 26 /* std,stq */ | |
9289 | && (insn & 1) == 0)); | |
560c8763 AM |
9290 | } |
9291 | ||
c5614fa4 AM |
9292 | /* Examine all relocs referencing .toc sections in order to remove |
9293 | unused .toc entries. */ | |
9294 | ||
9295 | bfd_boolean | |
33c0ec9d | 9296 | ppc64_elf_edit_toc (struct bfd_link_info *info) |
c5614fa4 AM |
9297 | { |
9298 | bfd *ibfd; | |
9299 | struct adjust_toc_info toc_inf; | |
67f0cbdb | 9300 | struct ppc_link_hash_table *htab = ppc_hash_table (info); |
c5614fa4 | 9301 | |
67f0cbdb | 9302 | htab->do_toc_opt = 1; |
c5614fa4 | 9303 | toc_inf.global_toc_syms = TRUE; |
c72f2fb2 | 9304 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next) |
c5614fa4 AM |
9305 | { |
9306 | asection *toc, *sec; | |
9307 | Elf_Internal_Shdr *symtab_hdr; | |
9308 | Elf_Internal_Sym *local_syms; | |
425b145b | 9309 | Elf_Internal_Rela *relstart, *rel, *toc_relocs; |
c5614fa4 AM |
9310 | unsigned long *skip, *drop; |
9311 | unsigned char *used; | |
9312 | unsigned char *keep, last, some_unused; | |
9313 | ||
854b41e7 AM |
9314 | if (!is_ppc64_elf (ibfd)) |
9315 | continue; | |
9316 | ||
c5614fa4 AM |
9317 | toc = bfd_get_section_by_name (ibfd, ".toc"); |
9318 | if (toc == NULL | |
92b7a70f | 9319 | || toc->size == 0 |
dbaa2011 AM |
9320 | || toc->sec_info_type == SEC_INFO_TYPE_JUST_SYMS |
9321 | || discarded_section (toc)) | |
c5614fa4 AM |
9322 | continue; |
9323 | ||
425b145b | 9324 | toc_relocs = NULL; |
c5614fa4 | 9325 | local_syms = NULL; |
0ffa91dd | 9326 | symtab_hdr = &elf_symtab_hdr (ibfd); |
c5614fa4 AM |
9327 | |
9328 | /* Look at sections dropped from the final link. */ | |
9329 | skip = NULL; | |
9330 | relstart = NULL; | |
9331 | for (sec = ibfd->sections; sec != NULL; sec = sec->next) | |
9332 | { | |
9333 | if (sec->reloc_count == 0 | |
dbaa2011 | 9334 | || !discarded_section (sec) |
c5614fa4 AM |
9335 | || get_opd_info (sec) |
9336 | || (sec->flags & SEC_ALLOC) == 0 | |
9337 | || (sec->flags & SEC_DEBUGGING) != 0) | |
9338 | continue; | |
9339 | ||
9340 | relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL, FALSE); | |
9341 | if (relstart == NULL) | |
9342 | goto error_ret; | |
9343 | ||
9344 | /* Run through the relocs to see which toc entries might be | |
9345 | unused. */ | |
9346 | for (rel = relstart; rel < relstart + sec->reloc_count; ++rel) | |
9347 | { | |
9348 | enum elf_ppc64_reloc_type r_type; | |
9349 | unsigned long r_symndx; | |
9350 | asection *sym_sec; | |
9351 | struct elf_link_hash_entry *h; | |
9352 | Elf_Internal_Sym *sym; | |
9353 | bfd_vma val; | |
9354 | ||
9355 | r_type = ELF64_R_TYPE (rel->r_info); | |
9356 | switch (r_type) | |
9357 | { | |
9358 | default: | |
9359 | continue; | |
9360 | ||
9361 | case R_PPC64_TOC16: | |
9362 | case R_PPC64_TOC16_LO: | |
9363 | case R_PPC64_TOC16_HI: | |
9364 | case R_PPC64_TOC16_HA: | |
9365 | case R_PPC64_TOC16_DS: | |
9366 | case R_PPC64_TOC16_LO_DS: | |
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 error_ret; | |
9374 | ||
9375 | if (sym_sec != toc) | |
9376 | continue; | |
9377 | ||
9378 | if (h != NULL) | |
9379 | val = h->root.u.def.value; | |
9380 | else | |
9381 | val = sym->st_value; | |
9382 | val += rel->r_addend; | |
9383 | ||
9384 | if (val >= toc->size) | |
9385 | continue; | |
9386 | ||
9387 | /* Anything in the toc ought to be aligned to 8 bytes. | |
9388 | If not, don't mark as unused. */ | |
9389 | if (val & 7) | |
9390 | continue; | |
9391 | ||
9392 | if (skip == NULL) | |
9393 | { | |
854b41e7 | 9394 | skip = bfd_zmalloc (sizeof (*skip) * (toc->size + 15) / 8); |
c5614fa4 AM |
9395 | if (skip == NULL) |
9396 | goto error_ret; | |
9397 | } | |
9398 | ||
ba761f19 | 9399 | skip[val >> 3] = ref_from_discarded; |
c5614fa4 AM |
9400 | } |
9401 | ||
9402 | if (elf_section_data (sec)->relocs != relstart) | |
9403 | free (relstart); | |
9404 | } | |
9405 | ||
ba761f19 AM |
9406 | /* For largetoc loads of address constants, we can convert |
9407 | . addis rx,2,addr@got@ha | |
9408 | . ld ry,addr@got@l(rx) | |
9409 | to | |
9410 | . addis rx,2,addr@toc@ha | |
9411 | . addi ry,rx,addr@toc@l | |
9412 | when addr is within 2G of the toc pointer. This then means | |
9413 | that the word storing "addr" in the toc is no longer needed. */ | |
68ffbac6 | 9414 | |
ba761f19 AM |
9415 | if (!ppc64_elf_tdata (ibfd)->has_small_toc_reloc |
9416 | && toc->output_section->rawsize < (bfd_vma) 1 << 31 | |
9417 | && toc->reloc_count != 0) | |
9418 | { | |
9419 | /* Read toc relocs. */ | |
425b145b AM |
9420 | toc_relocs = _bfd_elf_link_read_relocs (ibfd, toc, NULL, NULL, |
9421 | info->keep_memory); | |
9422 | if (toc_relocs == NULL) | |
ba761f19 AM |
9423 | goto error_ret; |
9424 | ||
425b145b | 9425 | for (rel = toc_relocs; rel < toc_relocs + toc->reloc_count; ++rel) |
ba761f19 AM |
9426 | { |
9427 | enum elf_ppc64_reloc_type r_type; | |
9428 | unsigned long r_symndx; | |
9429 | asection *sym_sec; | |
9430 | struct elf_link_hash_entry *h; | |
9431 | Elf_Internal_Sym *sym; | |
9432 | bfd_vma val, addr; | |
9433 | ||
9434 | r_type = ELF64_R_TYPE (rel->r_info); | |
9435 | if (r_type != R_PPC64_ADDR64) | |
9436 | continue; | |
9437 | ||
9438 | r_symndx = ELF64_R_SYM (rel->r_info); | |
9439 | if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, | |
9440 | r_symndx, ibfd)) | |
9441 | goto error_ret; | |
9442 | ||
425b145b | 9443 | if (sym_sec == NULL |
c27b8c2a | 9444 | || sym_sec->output_section == NULL |
dbaa2011 | 9445 | || discarded_section (sym_sec)) |
425b145b AM |
9446 | continue; |
9447 | ||
afe397ea | 9448 | if (!SYMBOL_REFERENCES_LOCAL (info, h)) |
ba761f19 AM |
9449 | continue; |
9450 | ||
9451 | if (h != NULL) | |
bddc25c9 AM |
9452 | { |
9453 | if (h->type == STT_GNU_IFUNC) | |
9454 | continue; | |
9455 | val = h->root.u.def.value; | |
9456 | } | |
ba761f19 | 9457 | else |
bddc25c9 AM |
9458 | { |
9459 | if (ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC) | |
9460 | continue; | |
9461 | val = sym->st_value; | |
9462 | } | |
ba761f19 AM |
9463 | val += rel->r_addend; |
9464 | val += sym_sec->output_section->vma + sym_sec->output_offset; | |
9465 | ||
9466 | /* We don't yet know the exact toc pointer value, but we | |
9467 | know it will be somewhere in the toc section. Don't | |
9468 | optimize if the difference from any possible toc | |
9469 | pointer is outside [ff..f80008000, 7fff7fff]. */ | |
9470 | addr = toc->output_section->vma + TOC_BASE_OFF; | |
9471 | if (val - addr + (bfd_vma) 0x80008000 >= (bfd_vma) 1 << 32) | |
9472 | continue; | |
9473 | ||
9474 | addr = toc->output_section->vma + toc->output_section->rawsize; | |
9475 | if (val - addr + (bfd_vma) 0x80008000 >= (bfd_vma) 1 << 32) | |
9476 | continue; | |
9477 | ||
9478 | if (skip == NULL) | |
9479 | { | |
9480 | skip = bfd_zmalloc (sizeof (*skip) * (toc->size + 15) / 8); | |
9481 | if (skip == NULL) | |
9482 | goto error_ret; | |
9483 | } | |
9484 | ||
9485 | skip[rel->r_offset >> 3] | |
425b145b | 9486 | |= can_optimize | ((rel - toc_relocs) << 2); |
ba761f19 | 9487 | } |
ba761f19 AM |
9488 | } |
9489 | ||
c5614fa4 AM |
9490 | if (skip == NULL) |
9491 | continue; | |
9492 | ||
9493 | used = bfd_zmalloc (sizeof (*used) * (toc->size + 7) / 8); | |
9494 | if (used == NULL) | |
9495 | { | |
9496 | error_ret: | |
9497 | if (local_syms != NULL | |
9498 | && symtab_hdr->contents != (unsigned char *) local_syms) | |
9499 | free (local_syms); | |
9500 | if (sec != NULL | |
9501 | && relstart != NULL | |
9502 | && elf_section_data (sec)->relocs != relstart) | |
9503 | free (relstart); | |
425b145b AM |
9504 | if (toc_relocs != NULL |
9505 | && elf_section_data (toc)->relocs != toc_relocs) | |
9506 | free (toc_relocs); | |
c5614fa4 AM |
9507 | if (skip != NULL) |
9508 | free (skip); | |
9509 | return FALSE; | |
9510 | } | |
9511 | ||
30038c59 AM |
9512 | /* Now check all kept sections that might reference the toc. |
9513 | Check the toc itself last. */ | |
9514 | for (sec = (ibfd->sections == toc && toc->next ? toc->next | |
9515 | : ibfd->sections); | |
c5614fa4 | 9516 | sec != NULL; |
c5614fa4 | 9517 | sec = (sec == toc ? NULL |
c5614fa4 | 9518 | : sec->next == NULL ? toc |
30038c59 | 9519 | : sec->next == toc && toc->next ? toc->next |
c5614fa4 AM |
9520 | : sec->next)) |
9521 | { | |
9522 | int repeat; | |
9523 | ||
9524 | if (sec->reloc_count == 0 | |
dbaa2011 | 9525 | || discarded_section (sec) |
c5614fa4 AM |
9526 | || get_opd_info (sec) |
9527 | || (sec->flags & SEC_ALLOC) == 0 | |
9528 | || (sec->flags & SEC_DEBUGGING) != 0) | |
9529 | continue; | |
9530 | ||
854b41e7 AM |
9531 | relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL, |
9532 | info->keep_memory); | |
c5614fa4 | 9533 | if (relstart == NULL) |
2915c55b JK |
9534 | { |
9535 | free (used); | |
9536 | goto error_ret; | |
9537 | } | |
c5614fa4 AM |
9538 | |
9539 | /* Mark toc entries referenced as used. */ | |
c5614fa4 | 9540 | do |
d4f1ee75 AM |
9541 | { |
9542 | repeat = 0; | |
9543 | for (rel = relstart; rel < relstart + sec->reloc_count; ++rel) | |
9544 | { | |
9545 | enum elf_ppc64_reloc_type r_type; | |
9546 | unsigned long r_symndx; | |
9547 | asection *sym_sec; | |
9548 | struct elf_link_hash_entry *h; | |
9549 | Elf_Internal_Sym *sym; | |
9550 | bfd_vma val; | |
9551 | enum {no_check, check_lo, check_ha} insn_check; | |
98528052 | 9552 | |
d4f1ee75 AM |
9553 | r_type = ELF64_R_TYPE (rel->r_info); |
9554 | switch (r_type) | |
9555 | { | |
9556 | default: | |
9557 | insn_check = no_check; | |
9558 | break; | |
98528052 | 9559 | |
d4f1ee75 AM |
9560 | case R_PPC64_GOT_TLSLD16_HA: |
9561 | case R_PPC64_GOT_TLSGD16_HA: | |
9562 | case R_PPC64_GOT_TPREL16_HA: | |
9563 | case R_PPC64_GOT_DTPREL16_HA: | |
9564 | case R_PPC64_GOT16_HA: | |
9565 | case R_PPC64_TOC16_HA: | |
9566 | insn_check = check_ha; | |
9567 | break; | |
98528052 | 9568 | |
d4f1ee75 AM |
9569 | case R_PPC64_GOT_TLSLD16_LO: |
9570 | case R_PPC64_GOT_TLSGD16_LO: | |
9571 | case R_PPC64_GOT_TPREL16_LO_DS: | |
9572 | case R_PPC64_GOT_DTPREL16_LO_DS: | |
9573 | case R_PPC64_GOT16_LO: | |
9574 | case R_PPC64_GOT16_LO_DS: | |
9575 | case R_PPC64_TOC16_LO: | |
9576 | case R_PPC64_TOC16_LO_DS: | |
9577 | insn_check = check_lo; | |
9578 | break; | |
9579 | } | |
560c8763 | 9580 | |
d4f1ee75 AM |
9581 | if (insn_check != no_check) |
9582 | { | |
9583 | bfd_vma off = rel->r_offset & ~3; | |
9584 | unsigned char buf[4]; | |
9585 | unsigned int insn; | |
c5614fa4 | 9586 | |
d4f1ee75 AM |
9587 | if (!bfd_get_section_contents (ibfd, sec, buf, off, 4)) |
9588 | { | |
9589 | free (used); | |
9590 | goto error_ret; | |
9591 | } | |
9592 | insn = bfd_get_32 (ibfd, buf); | |
9593 | if (insn_check == check_lo | |
39eeab25 | 9594 | ? !ok_lo_toc_insn (insn, r_type) |
d4f1ee75 AM |
9595 | : ((insn & ((0x3f << 26) | 0x1f << 16)) |
9596 | != ((15u << 26) | (2 << 16)) /* addis rt,2,imm */)) | |
9597 | { | |
9598 | char str[12]; | |
9599 | ||
9600 | ppc64_elf_tdata (ibfd)->unexpected_toc_insn = 1; | |
9601 | sprintf (str, "%#08x", insn); | |
9602 | info->callbacks->einfo | |
695344c0 | 9603 | /* xgettext:c-format */ |
174d0a74 | 9604 | (_("%H: toc optimization is not supported for" |
cf97bcb0 | 9605 | " %s instruction\n"), |
d4f1ee75 AM |
9606 | ibfd, sec, rel->r_offset & ~3, str); |
9607 | } | |
9608 | } | |
c5614fa4 | 9609 | |
d4f1ee75 AM |
9610 | switch (r_type) |
9611 | { | |
9612 | case R_PPC64_TOC16: | |
9613 | case R_PPC64_TOC16_LO: | |
9614 | case R_PPC64_TOC16_HI: | |
9615 | case R_PPC64_TOC16_HA: | |
9616 | case R_PPC64_TOC16_DS: | |
9617 | case R_PPC64_TOC16_LO_DS: | |
9618 | /* In case we're taking addresses of toc entries. */ | |
9619 | case R_PPC64_ADDR64: | |
9620 | break; | |
c5614fa4 | 9621 | |
d4f1ee75 AM |
9622 | default: |
9623 | continue; | |
9624 | } | |
c5614fa4 | 9625 | |
d4f1ee75 AM |
9626 | r_symndx = ELF64_R_SYM (rel->r_info); |
9627 | if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, | |
9628 | r_symndx, ibfd)) | |
9629 | { | |
9630 | free (used); | |
9631 | goto error_ret; | |
9632 | } | |
c5614fa4 | 9633 | |
d4f1ee75 AM |
9634 | if (sym_sec != toc) |
9635 | continue; | |
c5614fa4 | 9636 | |
d4f1ee75 AM |
9637 | if (h != NULL) |
9638 | val = h->root.u.def.value; | |
9639 | else | |
9640 | val = sym->st_value; | |
9641 | val += rel->r_addend; | |
ba761f19 | 9642 | |
d4f1ee75 AM |
9643 | if (val >= toc->size) |
9644 | continue; | |
ba761f19 | 9645 | |
d4f1ee75 AM |
9646 | if ((skip[val >> 3] & can_optimize) != 0) |
9647 | { | |
9648 | bfd_vma off; | |
9649 | unsigned char opc; | |
9650 | ||
9651 | switch (r_type) | |
9652 | { | |
9653 | case R_PPC64_TOC16_HA: | |
ba761f19 | 9654 | break; |
ba761f19 | 9655 | |
d4f1ee75 AM |
9656 | case R_PPC64_TOC16_LO_DS: |
9657 | off = rel->r_offset; | |
9658 | off += (bfd_big_endian (ibfd) ? -2 : 3); | |
9659 | if (!bfd_get_section_contents (ibfd, sec, &opc, | |
9660 | off, 1)) | |
9661 | { | |
9662 | free (used); | |
9663 | goto error_ret; | |
9664 | } | |
9665 | if ((opc & (0x3f << 2)) == (58u << 2)) | |
9666 | break; | |
1a0670f3 | 9667 | /* Fall through. */ |
ba761f19 | 9668 | |
d4f1ee75 AM |
9669 | default: |
9670 | /* Wrong sort of reloc, or not a ld. We may | |
9671 | as well clear ref_from_discarded too. */ | |
9672 | skip[val >> 3] = 0; | |
9673 | } | |
9674 | } | |
9675 | ||
9676 | if (sec != toc) | |
9677 | used[val >> 3] = 1; | |
9678 | /* For the toc section, we only mark as used if this | |
9679 | entry itself isn't unused. */ | |
9680 | else if ((used[rel->r_offset >> 3] | |
9681 | || !(skip[rel->r_offset >> 3] & ref_from_discarded)) | |
9682 | && !used[val >> 3]) | |
9683 | { | |
9684 | /* Do all the relocs again, to catch reference | |
9685 | chains. */ | |
9686 | repeat = 1; | |
9687 | used[val >> 3] = 1; | |
9688 | } | |
9689 | } | |
9690 | } | |
c5614fa4 | 9691 | while (repeat); |
854b41e7 AM |
9692 | |
9693 | if (elf_section_data (sec)->relocs != relstart) | |
9694 | free (relstart); | |
c5614fa4 AM |
9695 | } |
9696 | ||
9697 | /* Merge the used and skip arrays. Assume that TOC | |
9698 | doublewords not appearing as either used or unused belong | |
de194d85 | 9699 | to an entry more than one doubleword in size. */ |
c5614fa4 AM |
9700 | for (drop = skip, keep = used, last = 0, some_unused = 0; |
9701 | drop < skip + (toc->size + 7) / 8; | |
9702 | ++drop, ++keep) | |
9703 | { | |
9704 | if (*keep) | |
9705 | { | |
ba761f19 AM |
9706 | *drop &= ~ref_from_discarded; |
9707 | if ((*drop & can_optimize) != 0) | |
9708 | some_unused = 1; | |
c5614fa4 AM |
9709 | last = 0; |
9710 | } | |
b140b010 | 9711 | else if ((*drop & ref_from_discarded) != 0) |
c5614fa4 AM |
9712 | { |
9713 | some_unused = 1; | |
ba761f19 | 9714 | last = ref_from_discarded; |
c5614fa4 AM |
9715 | } |
9716 | else | |
9717 | *drop = last; | |
9718 | } | |
9719 | ||
9720 | free (used); | |
9721 | ||
9722 | if (some_unused) | |
9723 | { | |
9724 | bfd_byte *contents, *src; | |
9725 | unsigned long off; | |
d62b3684 | 9726 | Elf_Internal_Sym *sym; |
ba761f19 | 9727 | bfd_boolean local_toc_syms = FALSE; |
c5614fa4 AM |
9728 | |
9729 | /* Shuffle the toc contents, and at the same time convert the | |
9730 | skip array from booleans into offsets. */ | |
9731 | if (!bfd_malloc_and_get_section (ibfd, toc, &contents)) | |
9732 | goto error_ret; | |
9733 | ||
9734 | elf_section_data (toc)->this_hdr.contents = contents; | |
9735 | ||
9736 | for (src = contents, off = 0, drop = skip; | |
9737 | src < contents + toc->size; | |
9738 | src += 8, ++drop) | |
9739 | { | |
ba761f19 AM |
9740 | if ((*drop & (can_optimize | ref_from_discarded)) != 0) |
9741 | off += 8; | |
c5614fa4 AM |
9742 | else if (off != 0) |
9743 | { | |
9744 | *drop = off; | |
9745 | memcpy (src - off, src, 8); | |
9746 | } | |
9747 | } | |
854b41e7 | 9748 | *drop = off; |
c5614fa4 AM |
9749 | toc->rawsize = toc->size; |
9750 | toc->size = src - contents - off; | |
9751 | ||
ba761f19 AM |
9752 | /* Adjust addends for relocs against the toc section sym, |
9753 | and optimize any accesses we can. */ | |
c5614fa4 AM |
9754 | for (sec = ibfd->sections; sec != NULL; sec = sec->next) |
9755 | { | |
9756 | if (sec->reloc_count == 0 | |
dbaa2011 | 9757 | || discarded_section (sec)) |
c5614fa4 AM |
9758 | continue; |
9759 | ||
9760 | relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL, | |
854b41e7 | 9761 | info->keep_memory); |
c5614fa4 AM |
9762 | if (relstart == NULL) |
9763 | goto error_ret; | |
9764 | ||
9765 | for (rel = relstart; rel < relstart + sec->reloc_count; ++rel) | |
9766 | { | |
9767 | enum elf_ppc64_reloc_type r_type; | |
9768 | unsigned long r_symndx; | |
9769 | asection *sym_sec; | |
9770 | struct elf_link_hash_entry *h; | |
854b41e7 | 9771 | bfd_vma val; |
c5614fa4 AM |
9772 | |
9773 | r_type = ELF64_R_TYPE (rel->r_info); | |
9774 | switch (r_type) | |
9775 | { | |
9776 | default: | |
9777 | continue; | |
9778 | ||
9779 | case R_PPC64_TOC16: | |
9780 | case R_PPC64_TOC16_LO: | |
9781 | case R_PPC64_TOC16_HI: | |
9782 | case R_PPC64_TOC16_HA: | |
9783 | case R_PPC64_TOC16_DS: | |
9784 | case R_PPC64_TOC16_LO_DS: | |
9785 | case R_PPC64_ADDR64: | |
9786 | break; | |
9787 | } | |
9788 | ||
9789 | r_symndx = ELF64_R_SYM (rel->r_info); | |
9790 | if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, | |
9791 | r_symndx, ibfd)) | |
9792 | goto error_ret; | |
9793 | ||
ba761f19 | 9794 | if (sym_sec != toc) |
c5614fa4 AM |
9795 | continue; |
9796 | ||
ba761f19 AM |
9797 | if (h != NULL) |
9798 | val = h->root.u.def.value; | |
9799 | else | |
9800 | { | |
9801 | val = sym->st_value; | |
9802 | if (val != 0) | |
9803 | local_toc_syms = TRUE; | |
9804 | } | |
9805 | ||
9806 | val += rel->r_addend; | |
854b41e7 AM |
9807 | |
9808 | if (val > toc->rawsize) | |
9809 | val = toc->rawsize; | |
ba761f19 AM |
9810 | else if ((skip[val >> 3] & ref_from_discarded) != 0) |
9811 | continue; | |
9812 | else if ((skip[val >> 3] & can_optimize) != 0) | |
9813 | { | |
9814 | Elf_Internal_Rela *tocrel | |
425b145b | 9815 | = toc_relocs + (skip[val >> 3] >> 2); |
ba761f19 AM |
9816 | unsigned long tsym = ELF64_R_SYM (tocrel->r_info); |
9817 | ||
9818 | switch (r_type) | |
9819 | { | |
9820 | case R_PPC64_TOC16_HA: | |
9821 | rel->r_info = ELF64_R_INFO (tsym, R_PPC64_TOC16_HA); | |
9822 | break; | |
9823 | ||
9824 | case R_PPC64_TOC16_LO_DS: | |
9825 | rel->r_info = ELF64_R_INFO (tsym, R_PPC64_LO_DS_OPT); | |
9826 | break; | |
9827 | ||
9828 | default: | |
28942f62 AM |
9829 | if (!ppc64_elf_howto_table[R_PPC64_ADDR32]) |
9830 | ppc_howto_init (); | |
b140b010 | 9831 | info->callbacks->einfo |
695344c0 | 9832 | /* xgettext:c-format */ |
174d0a74 | 9833 | (_("%H: %s references " |
b140b010 AM |
9834 | "optimized away TOC entry\n"), |
9835 | ibfd, sec, rel->r_offset, | |
9836 | ppc64_elf_howto_table[r_type]->name); | |
9837 | bfd_set_error (bfd_error_bad_value); | |
9838 | goto error_ret; | |
ba761f19 AM |
9839 | } |
9840 | rel->r_addend = tocrel->r_addend; | |
9841 | elf_section_data (sec)->relocs = relstart; | |
9842 | continue; | |
9843 | } | |
9844 | ||
9845 | if (h != NULL || sym->st_value != 0) | |
9846 | continue; | |
854b41e7 AM |
9847 | |
9848 | rel->r_addend -= skip[val >> 3]; | |
9849 | elf_section_data (sec)->relocs = relstart; | |
c5614fa4 | 9850 | } |
854b41e7 AM |
9851 | |
9852 | if (elf_section_data (sec)->relocs != relstart) | |
9853 | free (relstart); | |
c5614fa4 AM |
9854 | } |
9855 | ||
9856 | /* We shouldn't have local or global symbols defined in the TOC, | |
9857 | but handle them anyway. */ | |
df22d223 AM |
9858 | if (local_syms != NULL) |
9859 | for (sym = local_syms; | |
9860 | sym < local_syms + symtab_hdr->sh_info; | |
9861 | ++sym) | |
9862 | if (sym->st_value != 0 | |
9863 | && bfd_section_from_elf_index (ibfd, sym->st_shndx) == toc) | |
9864 | { | |
9865 | unsigned long i; | |
854b41e7 | 9866 | |
df22d223 AM |
9867 | if (sym->st_value > toc->rawsize) |
9868 | i = toc->rawsize >> 3; | |
9869 | else | |
9870 | i = sym->st_value >> 3; | |
854b41e7 | 9871 | |
df22d223 AM |
9872 | if ((skip[i] & (ref_from_discarded | can_optimize)) != 0) |
9873 | { | |
9874 | if (local_toc_syms) | |
4eca0228 | 9875 | _bfd_error_handler |
df22d223 AM |
9876 | (_("%s defined on removed toc entry"), |
9877 | bfd_elf_sym_name (ibfd, symtab_hdr, sym, NULL)); | |
9878 | do | |
9879 | ++i; | |
9880 | while ((skip[i] & (ref_from_discarded | can_optimize))); | |
9881 | sym->st_value = (bfd_vma) i << 3; | |
9882 | } | |
d62b3684 | 9883 | |
df22d223 AM |
9884 | sym->st_value -= skip[i]; |
9885 | symtab_hdr->contents = (unsigned char *) local_syms; | |
9886 | } | |
c5614fa4 | 9887 | |
854b41e7 | 9888 | /* Adjust any global syms defined in this toc input section. */ |
c5614fa4 AM |
9889 | if (toc_inf.global_toc_syms) |
9890 | { | |
9891 | toc_inf.toc = toc; | |
9892 | toc_inf.skip = skip; | |
9893 | toc_inf.global_toc_syms = FALSE; | |
9894 | elf_link_hash_traverse (elf_hash_table (info), adjust_toc_syms, | |
9895 | &toc_inf); | |
9896 | } | |
854b41e7 AM |
9897 | |
9898 | if (toc->reloc_count != 0) | |
9899 | { | |
d4730f92 | 9900 | Elf_Internal_Shdr *rel_hdr; |
854b41e7 AM |
9901 | Elf_Internal_Rela *wrel; |
9902 | bfd_size_type sz; | |
9903 | ||
854b41e7 | 9904 | /* Remove unused toc relocs, and adjust those we keep. */ |
28be611c AM |
9905 | if (toc_relocs == NULL) |
9906 | toc_relocs = _bfd_elf_link_read_relocs (ibfd, toc, NULL, NULL, | |
9907 | info->keep_memory); | |
9908 | if (toc_relocs == NULL) | |
9909 | goto error_ret; | |
9910 | ||
425b145b AM |
9911 | wrel = toc_relocs; |
9912 | for (rel = toc_relocs; rel < toc_relocs + toc->reloc_count; ++rel) | |
ba761f19 AM |
9913 | if ((skip[rel->r_offset >> 3] |
9914 | & (ref_from_discarded | can_optimize)) == 0) | |
854b41e7 AM |
9915 | { |
9916 | wrel->r_offset = rel->r_offset - skip[rel->r_offset >> 3]; | |
9917 | wrel->r_info = rel->r_info; | |
9918 | wrel->r_addend = rel->r_addend; | |
9919 | ++wrel; | |
9920 | } | |
9921 | else if (!dec_dynrel_count (rel->r_info, toc, info, | |
9922 | &local_syms, NULL, NULL)) | |
9923 | goto error_ret; | |
9924 | ||
425b145b AM |
9925 | elf_section_data (toc)->relocs = toc_relocs; |
9926 | toc->reloc_count = wrel - toc_relocs; | |
d4730f92 BS |
9927 | rel_hdr = _bfd_elf_single_rel_hdr (toc); |
9928 | sz = rel_hdr->sh_entsize; | |
9929 | rel_hdr->sh_size = toc->reloc_count * sz; | |
854b41e7 | 9930 | } |
c5614fa4 | 9931 | } |
28be611c AM |
9932 | else if (toc_relocs != NULL |
9933 | && elf_section_data (toc)->relocs != toc_relocs) | |
425b145b | 9934 | free (toc_relocs); |
c5614fa4 AM |
9935 | |
9936 | if (local_syms != NULL | |
9937 | && symtab_hdr->contents != (unsigned char *) local_syms) | |
9938 | { | |
9939 | if (!info->keep_memory) | |
9940 | free (local_syms); | |
9941 | else | |
9942 | symtab_hdr->contents = (unsigned char *) local_syms; | |
9943 | } | |
9944 | free (skip); | |
9945 | } | |
9946 | ||
9947 | return TRUE; | |
9948 | } | |
9949 | ||
1bbe0902 AM |
9950 | /* Return true iff input section I references the TOC using |
9951 | instructions limited to +/-32k offsets. */ | |
9952 | ||
9953 | bfd_boolean | |
9954 | ppc64_elf_has_small_toc_reloc (asection *i) | |
9955 | { | |
9956 | return (is_ppc64_elf (i->owner) | |
9957 | && ppc64_elf_tdata (i->owner)->has_small_toc_reloc); | |
9958 | } | |
9959 | ||
927be08e AM |
9960 | /* Allocate space for one GOT entry. */ |
9961 | ||
9962 | static void | |
9963 | allocate_got (struct elf_link_hash_entry *h, | |
9964 | struct bfd_link_info *info, | |
9965 | struct got_entry *gent) | |
9966 | { | |
9967 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
927be08e AM |
9968 | struct ppc_link_hash_entry *eh = (struct ppc_link_hash_entry *) h; |
9969 | int entsize = (gent->tls_type & eh->tls_mask & (TLS_GD | TLS_LD) | |
9970 | ? 16 : 8); | |
9971 | int rentsize = (gent->tls_type & eh->tls_mask & TLS_GD | |
9972 | ? 2 : 1) * sizeof (Elf64_External_Rela); | |
9973 | asection *got = ppc64_elf_tdata (gent->owner)->got; | |
9974 | ||
9975 | gent->got.offset = got->size; | |
9976 | got->size += entsize; | |
9977 | ||
19e08130 | 9978 | if (h->type == STT_GNU_IFUNC) |
927be08e | 9979 | { |
33e44f2e | 9980 | htab->elf.irelplt->size += rentsize; |
19e08130 | 9981 | htab->got_reli_size += rentsize; |
927be08e | 9982 | } |
f15d0b54 AM |
9983 | else if (((bfd_link_pic (info) |
9984 | && !((gent->tls_type & TLS_TPREL) != 0 | |
9985 | && bfd_link_executable (info) | |
9986 | && SYMBOL_REFERENCES_LOCAL (info, h))) | |
f0158f44 AM |
9987 | || (htab->elf.dynamic_sections_created |
9988 | && h->dynindx != -1 | |
9989 | && !SYMBOL_REFERENCES_LOCAL (info, h))) | |
21d68fcd | 9990 | && !UNDEFWEAK_NO_DYNAMIC_RELOC (info, h)) |
927be08e | 9991 | { |
19e08130 | 9992 | asection *relgot = ppc64_elf_tdata (gent->owner)->relgot; |
927be08e | 9993 | relgot->size += rentsize; |
927be08e AM |
9994 | } |
9995 | } | |
9996 | ||
7865406b AM |
9997 | /* This function merges got entries in the same toc group. */ |
9998 | ||
9999 | static void | |
10000 | merge_got_entries (struct got_entry **pent) | |
10001 | { | |
10002 | struct got_entry *ent, *ent2; | |
10003 | ||
10004 | for (ent = *pent; ent != NULL; ent = ent->next) | |
10005 | if (!ent->is_indirect) | |
10006 | for (ent2 = ent->next; ent2 != NULL; ent2 = ent2->next) | |
10007 | if (!ent2->is_indirect | |
10008 | && ent2->addend == ent->addend | |
10009 | && ent2->tls_type == ent->tls_type | |
10010 | && elf_gp (ent2->owner) == elf_gp (ent->owner)) | |
10011 | { | |
10012 | ent2->is_indirect = TRUE; | |
10013 | ent2->got.ent = ent; | |
10014 | } | |
10015 | } | |
10016 | ||
46434633 | 10017 | /* If H is undefined, make it dynamic if that makes sense. */ |
f0158f44 AM |
10018 | |
10019 | static bfd_boolean | |
46434633 AM |
10020 | ensure_undef_dynamic (struct bfd_link_info *info, |
10021 | struct elf_link_hash_entry *h) | |
f0158f44 AM |
10022 | { |
10023 | struct elf_link_hash_table *htab = elf_hash_table (info); | |
10024 | ||
10025 | if (htab->dynamic_sections_created | |
46434633 AM |
10026 | && ((info->dynamic_undefined_weak != 0 |
10027 | && h->root.type == bfd_link_hash_undefweak) | |
10028 | || h->root.type == bfd_link_hash_undefined) | |
f0158f44 AM |
10029 | && h->dynindx == -1 |
10030 | && !h->forced_local | |
10031 | && ELF_ST_VISIBILITY (h->other) == STV_DEFAULT) | |
10032 | return bfd_elf_link_record_dynamic_symbol (info, h); | |
10033 | return TRUE; | |
10034 | } | |
10035 | ||
65f38f15 AM |
10036 | /* Allocate space in .plt, .got and associated reloc sections for |
10037 | dynamic relocs. */ | |
5bd4f169 | 10038 | |
b34976b6 | 10039 | static bfd_boolean |
4ce794b7 | 10040 | allocate_dynrelocs (struct elf_link_hash_entry *h, void *inf) |
5bd4f169 | 10041 | { |
65f38f15 AM |
10042 | struct bfd_link_info *info; |
10043 | struct ppc_link_hash_table *htab; | |
5bd4f169 | 10044 | asection *s; |
65f38f15 | 10045 | struct ppc_link_hash_entry *eh; |
0b8bcf0d | 10046 | struct got_entry **pgent, *gent; |
5bd4f169 | 10047 | |
e92d460e | 10048 | if (h->root.type == bfd_link_hash_indirect) |
b34976b6 | 10049 | return TRUE; |
5bd4f169 | 10050 | |
65f38f15 AM |
10051 | info = (struct bfd_link_info *) inf; |
10052 | htab = ppc_hash_table (info); | |
4dfe6ac6 NC |
10053 | if (htab == NULL) |
10054 | return FALSE; | |
5bd4f169 | 10055 | |
951fd09b AM |
10056 | eh = (struct ppc_link_hash_entry *) h; |
10057 | /* Run through the TLS GD got entries first if we're changing them | |
10058 | to TPREL. */ | |
37da22e5 | 10059 | if ((eh->tls_mask & (TLS_TLS | TLS_TPRELGD)) == (TLS_TLS | TLS_TPRELGD)) |
951fd09b AM |
10060 | for (gent = h->got.glist; gent != NULL; gent = gent->next) |
10061 | if (gent->got.refcount > 0 | |
10062 | && (gent->tls_type & TLS_GD) != 0) | |
10063 | { | |
10064 | /* This was a GD entry that has been converted to TPREL. If | |
10065 | there happens to be a TPREL entry we can use that one. */ | |
10066 | struct got_entry *ent; | |
10067 | for (ent = h->got.glist; ent != NULL; ent = ent->next) | |
10068 | if (ent->got.refcount > 0 | |
10069 | && (ent->tls_type & TLS_TPREL) != 0 | |
e717da7e AM |
10070 | && ent->addend == gent->addend |
10071 | && ent->owner == gent->owner) | |
951fd09b AM |
10072 | { |
10073 | gent->got.refcount = 0; | |
10074 | break; | |
10075 | } | |
10076 | ||
10077 | /* If not, then we'll be using our own TPREL entry. */ | |
10078 | if (gent->got.refcount != 0) | |
10079 | gent->tls_type = TLS_TLS | TLS_TPREL; | |
10080 | } | |
10081 | ||
7865406b AM |
10082 | /* Remove any list entry that won't generate a word in the GOT before |
10083 | we call merge_got_entries. Otherwise we risk merging to empty | |
10084 | entries. */ | |
0b8bcf0d AM |
10085 | pgent = &h->got.glist; |
10086 | while ((gent = *pgent) != NULL) | |
411e1bfb | 10087 | if (gent->got.refcount > 0) |
7865406b AM |
10088 | { |
10089 | if ((gent->tls_type & TLS_LD) != 0 | |
10090 | && !h->def_dynamic) | |
10091 | { | |
10092 | ppc64_tlsld_got (gent->owner)->got.refcount += 1; | |
10093 | *pgent = gent->next; | |
10094 | } | |
10095 | else | |
10096 | pgent = &gent->next; | |
10097 | } | |
10098 | else | |
10099 | *pgent = gent->next; | |
10100 | ||
10101 | if (!htab->do_multi_toc) | |
10102 | merge_got_entries (&h->got.glist); | |
10103 | ||
10104 | for (gent = h->got.glist; gent != NULL; gent = gent->next) | |
10105 | if (!gent->is_indirect) | |
411e1bfb | 10106 | { |
46434633 AM |
10107 | /* Make sure this symbol is output as a dynamic symbol. */ |
10108 | if (!ensure_undef_dynamic (info, h)) | |
f0158f44 | 10109 | return FALSE; |
65f38f15 | 10110 | |
0c8d6e5c | 10111 | if (!is_ppc64_elf (gent->owner)) |
927be08e | 10112 | abort (); |
0ffa91dd | 10113 | |
927be08e | 10114 | allocate_got (h, info, gent); |
411e1bfb | 10115 | } |
65f38f15 | 10116 | |
954b63d4 AM |
10117 | /* If no dynamic sections we can't have dynamic relocs, except for |
10118 | IFUNCs which are handled even in static executables. */ | |
8a2058b5 AM |
10119 | if (!htab->elf.dynamic_sections_created |
10120 | && h->type != STT_GNU_IFUNC) | |
10121 | eh->dyn_relocs = NULL; | |
10122 | ||
529fe20e AM |
10123 | /* Discard relocs on undefined symbols that must be local. */ |
10124 | else if (h->root.type == bfd_link_hash_undefined | |
10125 | && ELF_ST_VISIBILITY (h->other) != STV_DEFAULT) | |
10126 | eh->dyn_relocs = NULL; | |
10127 | ||
954b63d4 AM |
10128 | /* Also discard relocs on undefined weak syms with non-default |
10129 | visibility, or when dynamic_undefined_weak says so. */ | |
21d68fcd | 10130 | else if (UNDEFWEAK_NO_DYNAMIC_RELOC (info, h)) |
954b63d4 AM |
10131 | eh->dyn_relocs = NULL; |
10132 | ||
8a2058b5 | 10133 | if (eh->dyn_relocs != NULL) |
65f38f15 | 10134 | { |
8a2058b5 AM |
10135 | struct elf_dyn_relocs *p, **pp; |
10136 | ||
57e7d118 AM |
10137 | /* In the shared -Bsymbolic case, discard space allocated for |
10138 | dynamic pc-relative relocs against symbols which turn out to | |
10139 | be defined in regular objects. For the normal shared case, | |
10140 | discard space for relocs that have become local due to symbol | |
10141 | visibility changes. */ | |
10142 | ||
10143 | if (bfd_link_pic (info)) | |
65f38f15 | 10144 | { |
57e7d118 AM |
10145 | /* Relocs that use pc_count are those that appear on a call |
10146 | insn, or certain REL relocs (see must_be_dyn_reloc) that | |
10147 | can be generated via assembly. We want calls to | |
10148 | protected symbols to resolve directly to the function | |
10149 | rather than going via the plt. If people want function | |
10150 | pointer comparisons to work as expected then they should | |
10151 | avoid writing weird assembly. */ | |
10152 | if (SYMBOL_CALLS_LOCAL (info, h)) | |
10153 | { | |
57e7d118 AM |
10154 | for (pp = &eh->dyn_relocs; (p = *pp) != NULL; ) |
10155 | { | |
10156 | p->count -= p->pc_count; | |
10157 | p->pc_count = 0; | |
10158 | if (p->count == 0) | |
10159 | *pp = p->next; | |
10160 | else | |
10161 | pp = &p->next; | |
10162 | } | |
10163 | } | |
65f38f15 | 10164 | |
954b63d4 | 10165 | if (eh->dyn_relocs != NULL) |
5bd4f169 | 10166 | { |
46434633 AM |
10167 | /* Make sure this symbol is output as a dynamic symbol. */ |
10168 | if (!ensure_undef_dynamic (info, h)) | |
f0158f44 | 10169 | return FALSE; |
5bd4f169 | 10170 | } |
65f38f15 | 10171 | } |
529fe20e | 10172 | else if (ELIMINATE_COPY_RELOCS && h->type != STT_GNU_IFUNC) |
57e7d118 | 10173 | { |
8a2058b5 | 10174 | /* For the non-pic case, discard space for relocs against |
57e7d118 AM |
10175 | symbols which turn out to need copy relocs or are not |
10176 | dynamic. */ | |
529fe20e AM |
10177 | if (h->dynamic_adjusted |
10178 | && !h->def_regular | |
10179 | && !ELF_COMMON_DEF_P (h)) | |
f0158f44 | 10180 | { |
46434633 AM |
10181 | /* Make sure this symbol is output as a dynamic symbol. */ |
10182 | if (!ensure_undef_dynamic (info, h)) | |
f0158f44 | 10183 | return FALSE; |
dfbb6ac9 | 10184 | |
f0158f44 AM |
10185 | if (h->dynindx == -1) |
10186 | eh->dyn_relocs = NULL; | |
10187 | } | |
10188 | else | |
8a2058b5 | 10189 | eh->dyn_relocs = NULL; |
57e7d118 AM |
10190 | } |
10191 | ||
10192 | /* Finally, allocate space. */ | |
10193 | for (p = eh->dyn_relocs; p != NULL; p = p->next) | |
10194 | { | |
10195 | asection *sreloc = elf_section_data (p->sec)->sreloc; | |
10196 | if (eh->elf.type == STT_GNU_IFUNC) | |
10197 | sreloc = htab->elf.irelplt; | |
10198 | sreloc->size += p->count * sizeof (Elf64_External_Rela); | |
dfbb6ac9 | 10199 | } |
65f38f15 | 10200 | } |
57e7d118 | 10201 | |
2d7ad24e AM |
10202 | /* We might need a PLT entry when the symbol |
10203 | a) is dynamic, or | |
10204 | b) is an ifunc, or | |
10205 | c) has plt16 relocs and has been processed by adjust_dynamic_symbol, or | |
10206 | d) has plt16 relocs and we are linking statically. */ | |
10207 | if ((htab->elf.dynamic_sections_created && h->dynindx != -1) | |
10208 | || h->type == STT_GNU_IFUNC | |
10209 | || (h->needs_plt && h->dynamic_adjusted) | |
10210 | || (h->needs_plt | |
10211 | && h->def_regular | |
10212 | && !htab->elf.dynamic_sections_created | |
3e04d765 | 10213 | && !htab->can_convert_all_inline_plt |
2d7ad24e AM |
10214 | && (((struct ppc_link_hash_entry *) h)->tls_mask |
10215 | & (TLS_TLS | PLT_KEEP)) == PLT_KEEP)) | |
65f38f15 | 10216 | { |
57e7d118 AM |
10217 | struct plt_entry *pent; |
10218 | bfd_boolean doneone = FALSE; | |
10219 | for (pent = h->plt.plist; pent != NULL; pent = pent->next) | |
10220 | if (pent->plt.refcount > 0) | |
10221 | { | |
10222 | if (!htab->elf.dynamic_sections_created | |
10223 | || h->dynindx == -1) | |
10224 | { | |
2d7ad24e AM |
10225 | if (h->type == STT_GNU_IFUNC) |
10226 | { | |
10227 | s = htab->elf.iplt; | |
10228 | pent->plt.offset = s->size; | |
10229 | s->size += PLT_ENTRY_SIZE (htab); | |
10230 | s = htab->elf.irelplt; | |
10231 | } | |
10232 | else | |
10233 | { | |
10234 | s = htab->pltlocal; | |
10235 | pent->plt.offset = s->size; | |
10236 | s->size += LOCAL_PLT_ENTRY_SIZE (htab); | |
10237 | s = bfd_link_pic (info) ? htab->relpltlocal : NULL; | |
10238 | } | |
57e7d118 AM |
10239 | } |
10240 | else | |
10241 | { | |
10242 | /* If this is the first .plt entry, make room for the special | |
10243 | first entry. */ | |
10244 | s = htab->elf.splt; | |
10245 | if (s->size == 0) | |
10246 | s->size += PLT_INITIAL_ENTRY_SIZE (htab); | |
65f38f15 | 10247 | |
57e7d118 | 10248 | pent->plt.offset = s->size; |
65f38f15 | 10249 | |
57e7d118 AM |
10250 | /* Make room for this entry. */ |
10251 | s->size += PLT_ENTRY_SIZE (htab); | |
65f38f15 | 10252 | |
57e7d118 AM |
10253 | /* Make room for the .glink code. */ |
10254 | s = htab->glink; | |
10255 | if (s->size == 0) | |
9e390558 | 10256 | s->size += GLINK_PLTRESOLVE_SIZE (htab); |
57e7d118 AM |
10257 | if (htab->opd_abi) |
10258 | { | |
10259 | /* We need bigger stubs past index 32767. */ | |
9e390558 | 10260 | if (s->size >= GLINK_PLTRESOLVE_SIZE (htab) + 32768*2*4) |
57e7d118 AM |
10261 | s->size += 4; |
10262 | s->size += 2*4; | |
10263 | } | |
10264 | else | |
10265 | s->size += 4; | |
65f38f15 | 10266 | |
57e7d118 AM |
10267 | /* We also need to make an entry in the .rela.plt section. */ |
10268 | s = htab->elf.srelplt; | |
10269 | } | |
2d7ad24e AM |
10270 | if (s != NULL) |
10271 | s->size += sizeof (Elf64_External_Rela); | |
57e7d118 AM |
10272 | doneone = TRUE; |
10273 | } | |
10274 | else | |
10275 | pent->plt.offset = (bfd_vma) -1; | |
10276 | if (!doneone) | |
10277 | { | |
10278 | h->plt.plist = NULL; | |
10279 | h->needs_plt = 0; | |
10280 | } | |
65f38f15 | 10281 | } |
57e7d118 | 10282 | else |
65f38f15 | 10283 | { |
57e7d118 AM |
10284 | h->plt.plist = NULL; |
10285 | h->needs_plt = 0; | |
65f38f15 AM |
10286 | } |
10287 | ||
b34976b6 | 10288 | return TRUE; |
65f38f15 AM |
10289 | } |
10290 | ||
9e390558 AM |
10291 | #define PPC_LO(v) ((v) & 0xffff) |
10292 | #define PPC_HI(v) (((v) >> 16) & 0xffff) | |
10293 | #define PPC_HA(v) PPC_HI ((v) + 0x8000) | |
10294 | ||
a345bc8d AM |
10295 | /* Called via elf_link_hash_traverse from ppc64_elf_size_dynamic_sections |
10296 | to set up space for global entry stubs. These are put in glink, | |
10297 | after the branch table. */ | |
65f38f15 | 10298 | |
b34976b6 | 10299 | static bfd_boolean |
a345bc8d | 10300 | size_global_entry_stubs (struct elf_link_hash_entry *h, void *inf) |
65f38f15 | 10301 | { |
a345bc8d AM |
10302 | struct bfd_link_info *info; |
10303 | struct ppc_link_hash_table *htab; | |
10304 | struct plt_entry *pent; | |
9e390558 | 10305 | asection *s, *plt; |
65f38f15 | 10306 | |
a345bc8d AM |
10307 | if (h->root.type == bfd_link_hash_indirect) |
10308 | return TRUE; | |
65f38f15 | 10309 | |
a345bc8d AM |
10310 | if (!h->pointer_equality_needed) |
10311 | return TRUE; | |
65f38f15 | 10312 | |
a345bc8d AM |
10313 | if (h->def_regular) |
10314 | return TRUE; | |
65f38f15 | 10315 | |
a345bc8d AM |
10316 | info = inf; |
10317 | htab = ppc_hash_table (info); | |
10318 | if (htab == NULL) | |
10319 | return FALSE; | |
10320 | ||
9e390558 AM |
10321 | s = htab->global_entry; |
10322 | plt = htab->elf.splt; | |
a345bc8d AM |
10323 | for (pent = h->plt.plist; pent != NULL; pent = pent->next) |
10324 | if (pent->plt.offset != (bfd_vma) -1 | |
10325 | && pent->addend == 0) | |
10326 | { | |
afe397ea AM |
10327 | /* For ELFv2, if this symbol is not defined in a regular file |
10328 | and we are not generating a shared library or pie, then we | |
10329 | need to define the symbol in the executable on a call stub. | |
10330 | This is to avoid text relocations. */ | |
9e390558 AM |
10331 | bfd_vma off, stub_align, stub_off, stub_size; |
10332 | unsigned int align_power; | |
10333 | ||
10334 | stub_size = 16; | |
10335 | stub_off = s->size; | |
10336 | if (htab->params->plt_stub_align >= 0) | |
10337 | align_power = htab->params->plt_stub_align; | |
10338 | else | |
10339 | align_power = -htab->params->plt_stub_align; | |
10340 | /* Setting section alignment is delayed until we know it is | |
10341 | non-empty. Otherwise the .text output section will be | |
10342 | aligned at least to plt_stub_align even when no global | |
10343 | entry stubs are needed. */ | |
10344 | if (s->alignment_power < align_power) | |
10345 | s->alignment_power = align_power; | |
10346 | stub_align = (bfd_vma) 1 << align_power; | |
10347 | if (htab->params->plt_stub_align >= 0 | |
10348 | || ((((stub_off + stub_size - 1) & -stub_align) | |
10349 | - (stub_off & -stub_align)) | |
10350 | > ((stub_size - 1) & -stub_align))) | |
10351 | stub_off = (stub_off + stub_align - 1) & -stub_align; | |
10352 | off = pent->plt.offset + plt->output_offset + plt->output_section->vma; | |
10353 | off -= stub_off + s->output_offset + s->output_section->vma; | |
10354 | /* Note that for --plt-stub-align negative we have a possible | |
10355 | dependency between stub offset and size. Break that | |
10356 | dependency by assuming the max stub size when calculating | |
10357 | the stub offset. */ | |
10358 | if (PPC_HA (off) == 0) | |
10359 | stub_size -= 4; | |
8a2058b5 | 10360 | h->root.type = bfd_link_hash_defined; |
afe397ea | 10361 | h->root.u.def.section = s; |
9e390558 AM |
10362 | h->root.u.def.value = stub_off; |
10363 | s->size = stub_off + stub_size; | |
a345bc8d AM |
10364 | break; |
10365 | } | |
10366 | return TRUE; | |
10367 | } | |
10368 | ||
10369 | /* Set DF_TEXTREL if we find any dynamic relocs that apply to | |
10370 | read-only sections. */ | |
10371 | ||
10372 | static bfd_boolean | |
98bbb1b8 | 10373 | maybe_set_textrel (struct elf_link_hash_entry *h, void *inf) |
a345bc8d | 10374 | { |
98bbb1b8 AM |
10375 | asection *sec; |
10376 | ||
a345bc8d AM |
10377 | if (h->root.type == bfd_link_hash_indirect) |
10378 | return TRUE; | |
10379 | ||
98bbb1b8 AM |
10380 | sec = readonly_dynrelocs (h); |
10381 | if (sec != NULL) | |
a345bc8d | 10382 | { |
98bbb1b8 AM |
10383 | struct bfd_link_info *info = (struct bfd_link_info *) inf; |
10384 | ||
10385 | info->flags |= DF_TEXTREL; | |
2cdcc330 AM |
10386 | info->callbacks->minfo (_("%pB: dynamic relocation against `%pT'" |
10387 | " in read-only section `%pA'\n"), | |
10388 | sec->owner, h->root.root.string, sec); | |
a345bc8d AM |
10389 | |
10390 | /* Not an error, just cut short the traversal. */ | |
10391 | return FALSE; | |
65f38f15 | 10392 | } |
b34976b6 | 10393 | return TRUE; |
65f38f15 AM |
10394 | } |
10395 | ||
10396 | /* Set the sizes of the dynamic sections. */ | |
10397 | ||
b34976b6 | 10398 | static bfd_boolean |
ee67d69a | 10399 | ppc64_elf_size_dynamic_sections (bfd *output_bfd, |
4ce794b7 | 10400 | struct bfd_link_info *info) |
65f38f15 AM |
10401 | { |
10402 | struct ppc_link_hash_table *htab; | |
10403 | bfd *dynobj; | |
10404 | asection *s; | |
b34976b6 | 10405 | bfd_boolean relocs; |
65f38f15 | 10406 | bfd *ibfd; |
7865406b | 10407 | struct got_entry *first_tlsld; |
65f38f15 AM |
10408 | |
10409 | htab = ppc_hash_table (info); | |
4dfe6ac6 NC |
10410 | if (htab == NULL) |
10411 | return FALSE; | |
10412 | ||
65f38f15 AM |
10413 | dynobj = htab->elf.dynobj; |
10414 | if (dynobj == NULL) | |
10415 | abort (); | |
10416 | ||
10417 | if (htab->elf.dynamic_sections_created) | |
10418 | { | |
10419 | /* Set the contents of the .interp section to the interpreter. */ | |
9b8b325a | 10420 | if (bfd_link_executable (info) && !info->nointerp) |
65f38f15 | 10421 | { |
3d4d4302 | 10422 | s = bfd_get_linker_section (dynobj, ".interp"); |
65f38f15 AM |
10423 | if (s == NULL) |
10424 | abort (); | |
eea6121a | 10425 | s->size = sizeof ELF_DYNAMIC_INTERPRETER; |
65f38f15 AM |
10426 | s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER; |
10427 | } | |
10428 | } | |
10429 | ||
10430 | /* Set up .got offsets for local syms, and space for local dynamic | |
10431 | relocs. */ | |
c72f2fb2 | 10432 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next) |
65f38f15 | 10433 | { |
411e1bfb AM |
10434 | struct got_entry **lgot_ents; |
10435 | struct got_entry **end_lgot_ents; | |
e054468f AM |
10436 | struct plt_entry **local_plt; |
10437 | struct plt_entry **end_local_plt; | |
f961d9dd | 10438 | unsigned char *lgot_masks; |
65f38f15 AM |
10439 | bfd_size_type locsymcount; |
10440 | Elf_Internal_Shdr *symtab_hdr; | |
65f38f15 | 10441 | |
0c8d6e5c | 10442 | if (!is_ppc64_elf (ibfd)) |
65f38f15 AM |
10443 | continue; |
10444 | ||
10445 | for (s = ibfd->sections; s != NULL; s = s->next) | |
10446 | { | |
19e08130 | 10447 | struct ppc_dyn_relocs *p; |
65f38f15 | 10448 | |
6edfbbad | 10449 | for (p = elf_section_data (s)->local_dynrel; p != NULL; p = p->next) |
65f38f15 | 10450 | { |
ec338859 AM |
10451 | if (!bfd_is_abs_section (p->sec) |
10452 | && bfd_is_abs_section (p->sec->output_section)) | |
10453 | { | |
10454 | /* Input section has been discarded, either because | |
10455 | it is a copy of a linkonce section or due to | |
10456 | linker script /DISCARD/, so we'll be discarding | |
10457 | the relocs too. */ | |
10458 | } | |
248866a8 | 10459 | else if (p->count != 0) |
ec338859 | 10460 | { |
19e08130 AM |
10461 | asection *srel = elf_section_data (p->sec)->sreloc; |
10462 | if (p->ifunc) | |
33e44f2e | 10463 | srel = htab->elf.irelplt; |
eea6121a | 10464 | srel->size += p->count * sizeof (Elf64_External_Rela); |
248866a8 AM |
10465 | if ((p->sec->output_section->flags & SEC_READONLY) != 0) |
10466 | info->flags |= DF_TEXTREL; | |
ec338859 | 10467 | } |
65f38f15 AM |
10468 | } |
10469 | } | |
10470 | ||
411e1bfb AM |
10471 | lgot_ents = elf_local_got_ents (ibfd); |
10472 | if (!lgot_ents) | |
65f38f15 AM |
10473 | continue; |
10474 | ||
0ffa91dd | 10475 | symtab_hdr = &elf_symtab_hdr (ibfd); |
65f38f15 | 10476 | locsymcount = symtab_hdr->sh_info; |
411e1bfb | 10477 | end_lgot_ents = lgot_ents + locsymcount; |
e054468f AM |
10478 | local_plt = (struct plt_entry **) end_lgot_ents; |
10479 | end_local_plt = local_plt + locsymcount; | |
f961d9dd | 10480 | lgot_masks = (unsigned char *) end_local_plt; |
e717da7e | 10481 | s = ppc64_elf_tdata (ibfd)->got; |
e7b938ca | 10482 | for (; lgot_ents < end_lgot_ents; ++lgot_ents, ++lgot_masks) |
65f38f15 | 10483 | { |
0b8bcf0d | 10484 | struct got_entry **pent, *ent; |
411e1bfb | 10485 | |
0b8bcf0d AM |
10486 | pent = lgot_ents; |
10487 | while ((ent = *pent) != NULL) | |
411e1bfb AM |
10488 | if (ent->got.refcount > 0) |
10489 | { | |
e7b938ca | 10490 | if ((ent->tls_type & *lgot_masks & TLS_LD) != 0) |
411e1bfb | 10491 | { |
927be08e | 10492 | ppc64_tlsld_got (ibfd)->got.refcount += 1; |
0b8bcf0d | 10493 | *pent = ent->next; |
411e1bfb AM |
10494 | } |
10495 | else | |
10496 | { | |
19e08130 AM |
10497 | unsigned int ent_size = 8; |
10498 | unsigned int rel_size = sizeof (Elf64_External_Rela); | |
10499 | ||
eea6121a | 10500 | ent->got.offset = s->size; |
e7b938ca | 10501 | if ((ent->tls_type & *lgot_masks & TLS_GD) != 0) |
927be08e | 10502 | { |
19e08130 AM |
10503 | ent_size *= 2; |
10504 | rel_size *= 2; | |
10505 | } | |
10506 | s->size += ent_size; | |
37da22e5 | 10507 | if ((*lgot_masks & (TLS_TLS | PLT_IFUNC)) == PLT_IFUNC) |
19e08130 | 10508 | { |
33e44f2e | 10509 | htab->elf.irelplt->size += rel_size; |
19e08130 AM |
10510 | htab->got_reli_size += rel_size; |
10511 | } | |
f15d0b54 AM |
10512 | else if (bfd_link_pic (info) |
10513 | && !((ent->tls_type & TLS_TPREL) != 0 | |
10514 | && bfd_link_executable (info))) | |
19e08130 AM |
10515 | { |
10516 | asection *srel = ppc64_elf_tdata (ibfd)->relgot; | |
10517 | srel->size += rel_size; | |
927be08e | 10518 | } |
0b8bcf0d | 10519 | pent = &ent->next; |
411e1bfb AM |
10520 | } |
10521 | } | |
10522 | else | |
0b8bcf0d | 10523 | *pent = ent->next; |
65f38f15 | 10524 | } |
e054468f | 10525 | |
2d7ad24e AM |
10526 | /* Allocate space for plt calls to local syms. */ |
10527 | lgot_masks = (unsigned char *) end_local_plt; | |
10528 | for (; local_plt < end_local_plt; ++local_plt, ++lgot_masks) | |
e054468f AM |
10529 | { |
10530 | struct plt_entry *ent; | |
10531 | ||
10532 | for (ent = *local_plt; ent != NULL; ent = ent->next) | |
10533 | if (ent->plt.refcount > 0) | |
10534 | { | |
2d7ad24e AM |
10535 | if ((*lgot_masks & (TLS_TLS | PLT_IFUNC)) == PLT_IFUNC) |
10536 | { | |
10537 | s = htab->elf.iplt; | |
10538 | ent->plt.offset = s->size; | |
10539 | s->size += PLT_ENTRY_SIZE (htab); | |
10540 | htab->elf.irelplt->size += sizeof (Elf64_External_Rela); | |
10541 | } | |
3e04d765 AM |
10542 | else if (htab->can_convert_all_inline_plt |
10543 | || (*lgot_masks & (TLS_TLS | PLT_KEEP)) != PLT_KEEP) | |
2d7ad24e AM |
10544 | ent->plt.offset = (bfd_vma) -1; |
10545 | else | |
10546 | { | |
10547 | s = htab->pltlocal; | |
10548 | ent->plt.offset = s->size; | |
10549 | s->size += LOCAL_PLT_ENTRY_SIZE (htab); | |
10550 | if (bfd_link_pic (info)) | |
10551 | htab->relpltlocal->size += sizeof (Elf64_External_Rela); | |
10552 | } | |
e054468f AM |
10553 | } |
10554 | else | |
10555 | ent->plt.offset = (bfd_vma) -1; | |
10556 | } | |
65f38f15 AM |
10557 | } |
10558 | ||
10559 | /* Allocate global sym .plt and .got entries, and space for global | |
10560 | sym dynamic relocs. */ | |
4ce794b7 | 10561 | elf_link_hash_traverse (&htab->elf, allocate_dynrelocs, info); |
a345bc8d | 10562 | |
0e1862bb | 10563 | if (!htab->opd_abi && !bfd_link_pic (info)) |
a345bc8d | 10564 | elf_link_hash_traverse (&htab->elf, size_global_entry_stubs, info); |
65f38f15 | 10565 | |
7865406b | 10566 | first_tlsld = NULL; |
c72f2fb2 | 10567 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next) |
102890f0 | 10568 | { |
7865406b AM |
10569 | struct got_entry *ent; |
10570 | ||
0c8d6e5c | 10571 | if (!is_ppc64_elf (ibfd)) |
102890f0 AM |
10572 | continue; |
10573 | ||
7865406b AM |
10574 | ent = ppc64_tlsld_got (ibfd); |
10575 | if (ent->got.refcount > 0) | |
102890f0 | 10576 | { |
7865406b | 10577 | if (!htab->do_multi_toc && first_tlsld != NULL) |
102890f0 | 10578 | { |
7865406b AM |
10579 | ent->is_indirect = TRUE; |
10580 | ent->got.ent = first_tlsld; | |
10581 | } | |
10582 | else | |
10583 | { | |
10584 | if (first_tlsld == NULL) | |
10585 | first_tlsld = ent; | |
10586 | s = ppc64_elf_tdata (ibfd)->got; | |
10587 | ent->got.offset = s->size; | |
10588 | ent->owner = ibfd; | |
10589 | s->size += 16; | |
0e1862bb | 10590 | if (bfd_link_pic (info)) |
7865406b AM |
10591 | { |
10592 | asection *srel = ppc64_elf_tdata (ibfd)->relgot; | |
10593 | srel->size += sizeof (Elf64_External_Rela); | |
10594 | } | |
102890f0 AM |
10595 | } |
10596 | } | |
10597 | else | |
7865406b | 10598 | ent->got.offset = (bfd_vma) -1; |
102890f0 AM |
10599 | } |
10600 | ||
65f38f15 AM |
10601 | /* We now have determined the sizes of the various dynamic sections. |
10602 | Allocate memory for them. */ | |
b34976b6 | 10603 | relocs = FALSE; |
65f38f15 AM |
10604 | for (s = dynobj->sections; s != NULL; s = s->next) |
10605 | { | |
10606 | if ((s->flags & SEC_LINKER_CREATED) == 0) | |
10607 | continue; | |
10608 | ||
4ce794b7 | 10609 | if (s == htab->brlt || s == htab->relbrlt) |
721956f4 AM |
10610 | /* These haven't been allocated yet; don't strip. */ |
10611 | continue; | |
33e44f2e AM |
10612 | else if (s == htab->elf.sgot |
10613 | || s == htab->elf.splt | |
10614 | || s == htab->elf.iplt | |
2d7ad24e | 10615 | || s == htab->pltlocal |
c456f082 | 10616 | || s == htab->glink |
9e390558 | 10617 | || s == htab->global_entry |
5474d94f AM |
10618 | || s == htab->elf.sdynbss |
10619 | || s == htab->elf.sdynrelro) | |
65f38f15 AM |
10620 | { |
10621 | /* Strip this section if we don't need it; see the | |
10622 | comment below. */ | |
5bd4f169 | 10623 | } |
58d180e8 AM |
10624 | else if (s == htab->glink_eh_frame) |
10625 | { | |
10626 | if (!bfd_is_abs_section (s->output_section)) | |
10627 | /* Not sized yet. */ | |
10628 | continue; | |
10629 | } | |
70cc837d | 10630 | else if (CONST_STRNEQ (s->name, ".rela")) |
5bd4f169 | 10631 | { |
c456f082 | 10632 | if (s->size != 0) |
5bd4f169 | 10633 | { |
33e44f2e | 10634 | if (s != htab->elf.srelplt) |
b34976b6 | 10635 | relocs = TRUE; |
5bd4f169 AM |
10636 | |
10637 | /* We use the reloc_count field as a counter if we need | |
10638 | to copy relocs into the output file. */ | |
10639 | s->reloc_count = 0; | |
10640 | } | |
10641 | } | |
65f38f15 | 10642 | else |
5bd4f169 AM |
10643 | { |
10644 | /* It's not one of our sections, so don't allocate space. */ | |
10645 | continue; | |
10646 | } | |
10647 | ||
eea6121a | 10648 | if (s->size == 0) |
5bd4f169 | 10649 | { |
c456f082 AM |
10650 | /* If we don't need this section, strip it from the |
10651 | output file. This is mostly to handle .rela.bss and | |
10652 | .rela.plt. We must create both sections in | |
10653 | create_dynamic_sections, because they must be created | |
10654 | before the linker maps input sections to output | |
10655 | sections. The linker does that before | |
10656 | adjust_dynamic_symbol is called, and it is that | |
10657 | function which decides whether anything needs to go | |
10658 | into these sections. */ | |
8423293d | 10659 | s->flags |= SEC_EXCLUDE; |
5bd4f169 AM |
10660 | continue; |
10661 | } | |
10662 | ||
06bcf541 AM |
10663 | if (bfd_is_abs_section (s->output_section)) |
10664 | _bfd_error_handler (_("warning: discarding dynamic section %s"), | |
10665 | s->name); | |
10666 | ||
c456f082 | 10667 | if ((s->flags & SEC_HAS_CONTENTS) == 0) |
5f333394 AM |
10668 | continue; |
10669 | ||
65f38f15 AM |
10670 | /* Allocate memory for the section contents. We use bfd_zalloc |
10671 | here in case unused entries are not reclaimed before the | |
10672 | section's contents are written out. This should not happen, | |
411e1bfb AM |
10673 | but this way if it does we get a R_PPC64_NONE reloc in .rela |
10674 | sections instead of garbage. | |
10675 | We also rely on the section contents being zero when writing | |
5474d94f | 10676 | the GOT and .dynrelro. */ |
eea6121a | 10677 | s->contents = bfd_zalloc (dynobj, s->size); |
65f38f15 | 10678 | if (s->contents == NULL) |
b34976b6 | 10679 | return FALSE; |
5bd4f169 AM |
10680 | } |
10681 | ||
c72f2fb2 | 10682 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next) |
e717da7e | 10683 | { |
0c8d6e5c | 10684 | if (!is_ppc64_elf (ibfd)) |
7b53ace3 AM |
10685 | continue; |
10686 | ||
e717da7e | 10687 | s = ppc64_elf_tdata (ibfd)->got; |
33e44f2e | 10688 | if (s != NULL && s != htab->elf.sgot) |
e717da7e | 10689 | { |
eea6121a | 10690 | if (s->size == 0) |
8423293d | 10691 | s->flags |= SEC_EXCLUDE; |
e717da7e AM |
10692 | else |
10693 | { | |
eea6121a | 10694 | s->contents = bfd_zalloc (ibfd, s->size); |
e717da7e AM |
10695 | if (s->contents == NULL) |
10696 | return FALSE; | |
10697 | } | |
10698 | } | |
10699 | s = ppc64_elf_tdata (ibfd)->relgot; | |
10700 | if (s != NULL) | |
10701 | { | |
eea6121a | 10702 | if (s->size == 0) |
8423293d | 10703 | s->flags |= SEC_EXCLUDE; |
e717da7e AM |
10704 | else |
10705 | { | |
eea6121a | 10706 | s->contents = bfd_zalloc (ibfd, s->size); |
e717da7e AM |
10707 | if (s->contents == NULL) |
10708 | return FALSE; | |
10709 | relocs = TRUE; | |
10710 | s->reloc_count = 0; | |
10711 | } | |
10712 | } | |
10713 | } | |
10714 | ||
e86ce104 | 10715 | if (htab->elf.dynamic_sections_created) |
5bd4f169 | 10716 | { |
e8910a83 AM |
10717 | bfd_boolean tls_opt; |
10718 | ||
5bd4f169 AM |
10719 | /* Add some entries to the .dynamic section. We fill in the |
10720 | values later, in ppc64_elf_finish_dynamic_sections, but we | |
10721 | must add the entries now so that we get the correct size for | |
10722 | the .dynamic section. The DT_DEBUG entry is filled in by the | |
10723 | dynamic linker and used by the debugger. */ | |
dc810e39 | 10724 | #define add_dynamic_entry(TAG, VAL) \ |
5a580b3a | 10725 | _bfd_elf_add_dynamic_entry (info, TAG, VAL) |
dc810e39 | 10726 | |
0e1862bb | 10727 | if (bfd_link_executable (info)) |
5bd4f169 | 10728 | { |
dc810e39 | 10729 | if (!add_dynamic_entry (DT_DEBUG, 0)) |
b34976b6 | 10730 | return FALSE; |
5bd4f169 AM |
10731 | } |
10732 | ||
33e44f2e | 10733 | if (htab->elf.splt != NULL && htab->elf.splt->size != 0) |
5bd4f169 | 10734 | { |
dc810e39 AM |
10735 | if (!add_dynamic_entry (DT_PLTGOT, 0) |
10736 | || !add_dynamic_entry (DT_PLTRELSZ, 0) | |
10737 | || !add_dynamic_entry (DT_PLTREL, DT_RELA) | |
5d1634d7 AM |
10738 | || !add_dynamic_entry (DT_JMPREL, 0) |
10739 | || !add_dynamic_entry (DT_PPC64_GLINK, 0)) | |
b34976b6 | 10740 | return FALSE; |
5bd4f169 AM |
10741 | } |
10742 | ||
ee67d69a | 10743 | if (NO_OPD_RELOCS && abiversion (output_bfd) <= 1) |
19397422 AM |
10744 | { |
10745 | if (!add_dynamic_entry (DT_PPC64_OPD, 0) | |
10746 | || !add_dynamic_entry (DT_PPC64_OPDSZ, 0)) | |
b34976b6 | 10747 | return FALSE; |
19397422 AM |
10748 | } |
10749 | ||
7c9cf415 | 10750 | tls_opt = (htab->params->tls_get_addr_opt |
e8910a83 AM |
10751 | && htab->tls_get_addr_fd != NULL |
10752 | && htab->tls_get_addr_fd->elf.plt.plist != NULL); | |
10753 | if (tls_opt || !htab->opd_abi) | |
10754 | { | |
10755 | if (!add_dynamic_entry (DT_PPC64_OPT, tls_opt ? PPC64_OPT_TLS : 0)) | |
10756 | return FALSE; | |
10757 | } | |
a7f2871e | 10758 | |
5bd4f169 AM |
10759 | if (relocs) |
10760 | { | |
dc810e39 AM |
10761 | if (!add_dynamic_entry (DT_RELA, 0) |
10762 | || !add_dynamic_entry (DT_RELASZ, 0) | |
10763 | || !add_dynamic_entry (DT_RELAENT, sizeof (Elf64_External_Rela))) | |
b34976b6 | 10764 | return FALSE; |
5bd4f169 | 10765 | |
65f38f15 AM |
10766 | /* If any dynamic relocs apply to a read-only section, |
10767 | then we need a DT_TEXTREL entry. */ | |
248866a8 | 10768 | if ((info->flags & DF_TEXTREL) == 0) |
a345bc8d | 10769 | elf_link_hash_traverse (&htab->elf, maybe_set_textrel, info); |
5bd4f169 | 10770 | |
65f38f15 | 10771 | if ((info->flags & DF_TEXTREL) != 0) |
5bd4f169 | 10772 | { |
65f38f15 | 10773 | if (!add_dynamic_entry (DT_TEXTREL, 0)) |
b34976b6 | 10774 | return FALSE; |
5bd4f169 | 10775 | } |
5bd4f169 | 10776 | } |
5bd4f169 | 10777 | } |
65f38f15 | 10778 | #undef add_dynamic_entry |
5bd4f169 | 10779 | |
b34976b6 | 10780 | return TRUE; |
5bd4f169 AM |
10781 | } |
10782 | ||
a345bc8d AM |
10783 | /* Return TRUE if symbol should be hashed in the `.gnu.hash' section. */ |
10784 | ||
10785 | static bfd_boolean | |
10786 | ppc64_elf_hash_symbol (struct elf_link_hash_entry *h) | |
10787 | { | |
10788 | if (h->plt.plist != NULL | |
10789 | && !h->def_regular | |
10790 | && !h->pointer_equality_needed) | |
10791 | return FALSE; | |
10792 | ||
10793 | return _bfd_elf_hash_symbol (h); | |
10794 | } | |
10795 | ||
721956f4 | 10796 | /* Determine the type of stub needed, if any, for a call. */ |
5bd4f169 | 10797 | |
4ce794b7 AM |
10798 | static inline enum ppc_stub_type |
10799 | ppc_type_of_stub (asection *input_sec, | |
10800 | const Elf_Internal_Rela *rel, | |
10801 | struct ppc_link_hash_entry **hash, | |
e054468f | 10802 | struct plt_entry **plt_ent, |
6911b7dc AM |
10803 | bfd_vma destination, |
10804 | unsigned long local_off) | |
5bd4f169 | 10805 | { |
721956f4 AM |
10806 | struct ppc_link_hash_entry *h = *hash; |
10807 | bfd_vma location; | |
10808 | bfd_vma branch_offset; | |
10809 | bfd_vma max_branch_offset; | |
4ce794b7 | 10810 | enum elf_ppc64_reloc_type r_type; |
5bd4f169 | 10811 | |
721956f4 AM |
10812 | if (h != NULL) |
10813 | { | |
e054468f | 10814 | struct plt_entry *ent; |
7fe2b9a6 | 10815 | struct ppc_link_hash_entry *fdh = h; |
b31867b6 AM |
10816 | if (h->oh != NULL |
10817 | && h->oh->is_func_descriptor) | |
7b8f6675 AM |
10818 | { |
10819 | fdh = ppc_follow_link (h->oh); | |
10820 | *hash = fdh; | |
10821 | } | |
8387904d | 10822 | |
e054468f AM |
10823 | for (ent = fdh->elf.plt.plist; ent != NULL; ent = ent->next) |
10824 | if (ent->addend == rel->r_addend | |
10825 | && ent->plt.offset != (bfd_vma) -1) | |
10826 | { | |
e054468f AM |
10827 | *plt_ent = ent; |
10828 | return ppc_stub_plt_call; | |
10829 | } | |
5bd4f169 | 10830 | |
7fe2b9a6 AM |
10831 | /* Here, we know we don't have a plt entry. If we don't have a |
10832 | either a defined function descriptor or a defined entry symbol | |
10833 | in a regular object file, then it is pointless trying to make | |
10834 | any other type of stub. */ | |
854b41e7 AM |
10835 | if (!is_static_defined (&fdh->elf) |
10836 | && !is_static_defined (&h->elf)) | |
721956f4 | 10837 | return ppc_stub_none; |
5d1634d7 | 10838 | } |
e054468f AM |
10839 | else if (elf_local_got_ents (input_sec->owner) != NULL) |
10840 | { | |
10841 | Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (input_sec->owner); | |
10842 | struct plt_entry **local_plt = (struct plt_entry **) | |
10843 | elf_local_got_ents (input_sec->owner) + symtab_hdr->sh_info; | |
10844 | unsigned long r_symndx = ELF64_R_SYM (rel->r_info); | |
10845 | ||
10846 | if (local_plt[r_symndx] != NULL) | |
10847 | { | |
10848 | struct plt_entry *ent; | |
10849 | ||
10850 | for (ent = local_plt[r_symndx]; ent != NULL; ent = ent->next) | |
10851 | if (ent->addend == rel->r_addend | |
10852 | && ent->plt.offset != (bfd_vma) -1) | |
10853 | { | |
10854 | *plt_ent = ent; | |
10855 | return ppc_stub_plt_call; | |
10856 | } | |
10857 | } | |
10858 | } | |
5d1634d7 | 10859 | |
721956f4 AM |
10860 | /* Determine where the call point is. */ |
10861 | location = (input_sec->output_offset | |
10862 | + input_sec->output_section->vma | |
10863 | + rel->r_offset); | |
5d1634d7 | 10864 | |
721956f4 AM |
10865 | branch_offset = destination - location; |
10866 | r_type = ELF64_R_TYPE (rel->r_info); | |
5d1634d7 | 10867 | |
721956f4 AM |
10868 | /* Determine if a long branch stub is needed. */ |
10869 | max_branch_offset = 1 << 25; | |
23cedd1d AM |
10870 | if (r_type == R_PPC64_REL14 |
10871 | || r_type == R_PPC64_REL14_BRTAKEN | |
10872 | || r_type == R_PPC64_REL14_BRNTAKEN) | |
721956f4 | 10873 | max_branch_offset = 1 << 15; |
5d1634d7 | 10874 | |
6911b7dc | 10875 | if (branch_offset + max_branch_offset >= 2 * max_branch_offset - local_off) |
721956f4 AM |
10876 | /* We need a stub. Figure out whether a long_branch or plt_branch |
10877 | is needed later. */ | |
10878 | return ppc_stub_long_branch; | |
5d1634d7 | 10879 | |
721956f4 | 10880 | return ppc_stub_none; |
5d1634d7 AM |
10881 | } |
10882 | ||
05d0e962 AM |
10883 | /* Builds a 64-bit offset in r12 then adds it to r11 (LOAD false) or |
10884 | loads r12 from r11+r12 (LOAD true). | |
10885 | . lis %r12,xxx-1b@highest | |
10886 | . ori %r12,xxx-1b@higher | |
10887 | . sldi %r12,%r12,32 | |
10888 | . oris %r12,%r12,xxx-1b@hi | |
10889 | . ori %r12,%r12,xxx-1b@l | |
10890 | . add %r12,%r11,%r12 */ | |
10891 | ||
10892 | static bfd_byte * | |
10893 | build_offset (bfd *abfd, bfd_byte *p, bfd_vma off, bfd_boolean load) | |
10894 | { | |
10895 | if (off + 0x8000 < 0x10000) | |
10896 | { | |
10897 | if (load) | |
10898 | bfd_put_32 (abfd, LD_R12_0R11 + PPC_LO (off), p); | |
10899 | else | |
10900 | bfd_put_32 (abfd, ADDI_R12_R11 + PPC_LO (off), p); | |
10901 | p += 4; | |
10902 | } | |
10903 | else if (off + 0x80008000ULL < 0x100000000ULL) | |
10904 | { | |
10905 | bfd_put_32 (abfd, ADDIS_R12_R11 + PPC_HA (off), p); | |
10906 | p += 4; | |
10907 | if (load) | |
10908 | bfd_put_32 (abfd, LD_R12_0R12 + PPC_LO (off), p); | |
10909 | else | |
10910 | bfd_put_32 (abfd, ADDI_R12_R12 + PPC_LO (off), p); | |
10911 | p += 4; | |
10912 | } | |
10913 | else | |
10914 | { | |
10915 | if (off + 0x800000000000ULL < 0x1000000000000ULL) | |
10916 | { | |
10917 | bfd_put_32 (abfd, LI_R12_0 + ((off >> 32) & 0xffff), p); | |
10918 | p += 4; | |
10919 | } | |
10920 | else | |
10921 | { | |
10922 | bfd_put_32 (abfd, LIS_R12 + ((off >> 48) & 0xffff), p); | |
10923 | p += 4; | |
10924 | if (((off >> 32) & 0xffff) != 0) | |
10925 | { | |
10926 | bfd_put_32 (abfd, ORI_R12_R12_0 + ((off >> 32) & 0xffff), p); | |
10927 | p += 4; | |
10928 | } | |
10929 | } | |
10930 | if (((off >> 32) & 0xffffffffULL) != 0) | |
10931 | { | |
10932 | bfd_put_32 (abfd, SLDI_R12_R12_32, p); | |
10933 | p += 4; | |
10934 | } | |
10935 | if (PPC_HI (off) != 0) | |
10936 | { | |
10937 | bfd_put_32 (abfd, ORIS_R12_R12_0 + PPC_HI (off), p); | |
10938 | p += 4; | |
10939 | } | |
10940 | if (PPC_LO (off) != 0) | |
10941 | { | |
10942 | bfd_put_32 (abfd, ORI_R12_R12_0 + PPC_LO (off), p); | |
10943 | p += 4; | |
10944 | } | |
10945 | if (load) | |
10946 | bfd_put_32 (abfd, LDX_R12_R11_R12, p); | |
10947 | else | |
10948 | bfd_put_32 (abfd, ADD_R12_R11_R12, p); | |
10949 | p += 4; | |
10950 | } | |
10951 | return p; | |
10952 | } | |
10953 | ||
10954 | static unsigned int | |
10955 | size_offset (bfd_vma off) | |
10956 | { | |
10957 | unsigned int size; | |
10958 | if (off + 0x8000 < 0x10000) | |
10959 | size = 4; | |
10960 | else if (off + 0x80008000ULL < 0x100000000ULL) | |
10961 | size = 8; | |
10962 | else | |
10963 | { | |
10964 | if (off + 0x800000000000ULL < 0x1000000000000ULL) | |
10965 | size = 4; | |
10966 | else | |
10967 | { | |
10968 | size = 4; | |
10969 | if (((off >> 32) & 0xffff) != 0) | |
10970 | size += 4; | |
10971 | } | |
10972 | if (((off >> 32) & 0xffffffffULL) != 0) | |
10973 | size += 4; | |
10974 | if (PPC_HI (off) != 0) | |
10975 | size += 4; | |
10976 | if (PPC_LO (off) != 0) | |
10977 | size += 4; | |
10978 | size += 4; | |
10979 | } | |
10980 | return size; | |
10981 | } | |
10982 | ||
df136d64 AM |
10983 | /* Emit .eh_frame opcode to advance pc by DELTA. */ |
10984 | ||
10985 | static bfd_byte * | |
10986 | eh_advance (bfd *abfd, bfd_byte *eh, unsigned int delta) | |
10987 | { | |
10988 | delta /= 4; | |
10989 | if (delta < 64) | |
10990 | *eh++ = DW_CFA_advance_loc + delta; | |
10991 | else if (delta < 256) | |
10992 | { | |
10993 | *eh++ = DW_CFA_advance_loc1; | |
10994 | *eh++ = delta; | |
10995 | } | |
10996 | else if (delta < 65536) | |
10997 | { | |
10998 | *eh++ = DW_CFA_advance_loc2; | |
10999 | bfd_put_16 (abfd, delta, eh); | |
11000 | eh += 2; | |
11001 | } | |
11002 | else | |
11003 | { | |
11004 | *eh++ = DW_CFA_advance_loc4; | |
11005 | bfd_put_32 (abfd, delta, eh); | |
11006 | eh += 4; | |
11007 | } | |
11008 | return eh; | |
11009 | } | |
11010 | ||
11011 | /* Size of required .eh_frame opcode to advance pc by DELTA. */ | |
11012 | ||
11013 | static unsigned int | |
11014 | eh_advance_size (unsigned int delta) | |
11015 | { | |
11016 | if (delta < 64 * 4) | |
11017 | /* DW_CFA_advance_loc+[1..63]. */ | |
11018 | return 1; | |
11019 | if (delta < 256 * 4) | |
11020 | /* DW_CFA_advance_loc1, byte. */ | |
11021 | return 2; | |
11022 | if (delta < 65536 * 4) | |
11023 | /* DW_CFA_advance_loc2, 2 bytes. */ | |
11024 | return 3; | |
11025 | /* DW_CFA_advance_loc4, 4 bytes. */ | |
11026 | return 5; | |
11027 | } | |
11028 | ||
794e51c0 AM |
11029 | /* With power7 weakly ordered memory model, it is possible for ld.so |
11030 | to update a plt entry in one thread and have another thread see a | |
11031 | stale zero toc entry. To avoid this we need some sort of acquire | |
11032 | barrier in the call stub. One solution is to make the load of the | |
11033 | toc word seem to appear to depend on the load of the function entry | |
11034 | word. Another solution is to test for r2 being zero, and branch to | |
11035 | the appropriate glink entry if so. | |
11036 | ||
11037 | . fake dep barrier compare | |
71a39c98 AM |
11038 | . ld 12,xxx(2) ld 12,xxx(2) |
11039 | . mtctr 12 mtctr 12 | |
11040 | . xor 11,12,12 ld 2,xxx+8(2) | |
794e51c0 AM |
11041 | . add 2,2,11 cmpldi 2,0 |
11042 | . ld 2,xxx+8(2) bnectr+ | |
11043 | . bctr b <glink_entry> | |
11044 | ||
11045 | The solution involving the compare turns out to be faster, so | |
11046 | that's what we use unless the branch won't reach. */ | |
11047 | ||
11048 | #define ALWAYS_USE_FAKE_DEP 0 | |
11049 | #define ALWAYS_EMIT_R2SAVE 0 | |
5d1634d7 | 11050 | |
794e51c0 AM |
11051 | static inline unsigned int |
11052 | plt_stub_size (struct ppc_link_hash_table *htab, | |
11053 | struct ppc_stub_hash_entry *stub_entry, | |
11054 | bfd_vma off) | |
11055 | { | |
05d0e962 | 11056 | unsigned size; |
b9e5796b | 11057 | |
05d0e962 AM |
11058 | if (stub_entry->stub_type >= ppc_stub_plt_call_notoc) |
11059 | { | |
11060 | size = 24 + size_offset (off); | |
11061 | if (stub_entry->stub_type > ppc_stub_plt_call_notoc) | |
11062 | size += 4; | |
11063 | return size; | |
11064 | } | |
11065 | ||
11066 | size = 12; | |
b9e5796b AM |
11067 | if (ALWAYS_EMIT_R2SAVE |
11068 | || stub_entry->stub_type == ppc_stub_plt_call_r2save) | |
11069 | size += 4; | |
11070 | if (PPC_HA (off) != 0) | |
794e51c0 | 11071 | size += 4; |
b9e5796b AM |
11072 | if (htab->opd_abi) |
11073 | { | |
11074 | size += 4; | |
e7d1c40c | 11075 | if (htab->params->plt_static_chain) |
b9e5796b | 11076 | size += 4; |
bd4d2eaa AM |
11077 | if (htab->params->plt_thread_safe |
11078 | && htab->elf.dynamic_sections_created | |
11079 | && stub_entry->h != NULL | |
11080 | && stub_entry->h->elf.dynindx != -1) | |
b9e5796b | 11081 | size += 8; |
e7d1c40c | 11082 | if (PPC_HA (off + 8 + 8 * htab->params->plt_static_chain) != PPC_HA (off)) |
b9e5796b AM |
11083 | size += 4; |
11084 | } | |
794e51c0 AM |
11085 | if (stub_entry->h != NULL |
11086 | && (stub_entry->h == htab->tls_get_addr_fd | |
11087 | || stub_entry->h == htab->tls_get_addr) | |
7c9cf415 | 11088 | && htab->params->tls_get_addr_opt) |
f378ab09 AM |
11089 | { |
11090 | size += 7 * 4; | |
e81b4c93 | 11091 | if (stub_entry->stub_type == ppc_stub_plt_call_r2save) |
407aa07c | 11092 | size += 6 * 4; |
f378ab09 | 11093 | } |
794e51c0 AM |
11094 | return size; |
11095 | } | |
11096 | ||
2420fff6 AM |
11097 | /* Depending on the sign of plt_stub_align: |
11098 | If positive, return the padding to align to a 2**plt_stub_align | |
11099 | boundary. | |
11100 | If negative, if this stub would cross fewer 2**plt_stub_align | |
11101 | boundaries if we align, then return the padding needed to do so. */ | |
11102 | ||
794e51c0 AM |
11103 | static inline unsigned int |
11104 | plt_stub_pad (struct ppc_link_hash_table *htab, | |
11105 | struct ppc_stub_hash_entry *stub_entry, | |
11106 | bfd_vma plt_off) | |
11107 | { | |
2420fff6 | 11108 | int stub_align; |
1aa42141 | 11109 | unsigned stub_size; |
6f20ed8a | 11110 | bfd_vma stub_off = stub_entry->group->stub_sec->size; |
794e51c0 | 11111 | |
2420fff6 AM |
11112 | if (htab->params->plt_stub_align >= 0) |
11113 | { | |
11114 | stub_align = 1 << htab->params->plt_stub_align; | |
11115 | if ((stub_off & (stub_align - 1)) != 0) | |
11116 | return stub_align - (stub_off & (stub_align - 1)); | |
11117 | return 0; | |
11118 | } | |
11119 | ||
11120 | stub_align = 1 << -htab->params->plt_stub_align; | |
1aa42141 | 11121 | stub_size = plt_stub_size (htab, stub_entry, plt_off); |
794e51c0 | 11122 | if (((stub_off + stub_size - 1) & -stub_align) - (stub_off & -stub_align) |
e05fa0ba | 11123 | > ((stub_size - 1) & -stub_align)) |
794e51c0 AM |
11124 | return stub_align - (stub_off & (stub_align - 1)); |
11125 | return 0; | |
11126 | } | |
11127 | ||
11128 | /* Build a .plt call stub. */ | |
11129 | ||
11130 | static inline bfd_byte * | |
11131 | build_plt_stub (struct ppc_link_hash_table *htab, | |
11132 | struct ppc_stub_hash_entry *stub_entry, | |
11133 | bfd_byte *p, bfd_vma offset, Elf_Internal_Rela *r) | |
11134 | { | |
e7d1c40c | 11135 | bfd *obfd = htab->params->stub_bfd; |
b9e5796b | 11136 | bfd_boolean plt_load_toc = htab->opd_abi; |
e7d1c40c | 11137 | bfd_boolean plt_static_chain = htab->params->plt_static_chain; |
bd4d2eaa AM |
11138 | bfd_boolean plt_thread_safe = (htab->params->plt_thread_safe |
11139 | && htab->elf.dynamic_sections_created | |
11140 | && stub_entry->h != NULL | |
11141 | && stub_entry->h->elf.dynindx != -1); | |
794e51c0 AM |
11142 | bfd_boolean use_fake_dep = plt_thread_safe; |
11143 | bfd_vma cmp_branch_off = 0; | |
11144 | ||
11145 | if (!ALWAYS_USE_FAKE_DEP | |
b9e5796b | 11146 | && plt_load_toc |
794e51c0 | 11147 | && plt_thread_safe |
bd4d2eaa AM |
11148 | && !((stub_entry->h == htab->tls_get_addr_fd |
11149 | || stub_entry->h == htab->tls_get_addr) | |
7c9cf415 | 11150 | && htab->params->tls_get_addr_opt)) |
794e51c0 AM |
11151 | { |
11152 | bfd_vma pltoff = stub_entry->plt_ent->plt.offset & ~1; | |
b9e5796b AM |
11153 | bfd_vma pltindex = ((pltoff - PLT_INITIAL_ENTRY_SIZE (htab)) |
11154 | / PLT_ENTRY_SIZE (htab)); | |
9e390558 | 11155 | bfd_vma glinkoff = GLINK_PLTRESOLVE_SIZE (htab) + pltindex * 8; |
794e51c0 AM |
11156 | bfd_vma to, from; |
11157 | ||
68d62958 AM |
11158 | if (pltindex > 32768) |
11159 | glinkoff += (pltindex - 32768) * 4; | |
794e51c0 AM |
11160 | to = (glinkoff |
11161 | + htab->glink->output_offset | |
11162 | + htab->glink->output_section->vma); | |
6f20ed8a | 11163 | from = (p - stub_entry->group->stub_sec->contents |
794e51c0 AM |
11164 | + 4 * (ALWAYS_EMIT_R2SAVE |
11165 | || stub_entry->stub_type == ppc_stub_plt_call_r2save) | |
11166 | + 4 * (PPC_HA (offset) != 0) | |
11167 | + 4 * (PPC_HA (offset + 8 + 8 * plt_static_chain) | |
11168 | != PPC_HA (offset)) | |
11169 | + 4 * (plt_static_chain != 0) | |
11170 | + 20 | |
6f20ed8a AM |
11171 | + stub_entry->group->stub_sec->output_offset |
11172 | + stub_entry->group->stub_sec->output_section->vma); | |
794e51c0 AM |
11173 | cmp_branch_off = to - from; |
11174 | use_fake_dep = cmp_branch_off + (1 << 25) >= (1 << 26); | |
11175 | } | |
11176 | ||
ac2df442 AM |
11177 | if (PPC_HA (offset) != 0) |
11178 | { | |
176a0d42 AM |
11179 | if (r != NULL) |
11180 | { | |
794e51c0 AM |
11181 | if (ALWAYS_EMIT_R2SAVE |
11182 | || stub_entry->stub_type == ppc_stub_plt_call_r2save) | |
11183 | r[0].r_offset += 4; | |
176a0d42 | 11184 | r[0].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_HA); |
3b421ab3 | 11185 | r[1].r_offset = r[0].r_offset + 4; |
176a0d42 AM |
11186 | r[1].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS); |
11187 | r[1].r_addend = r[0].r_addend; | |
b9e5796b | 11188 | if (plt_load_toc) |
176a0d42 | 11189 | { |
b9e5796b | 11190 | if (PPC_HA (offset + 8 + 8 * plt_static_chain) != PPC_HA (offset)) |
c7131b65 | 11191 | { |
b9e5796b AM |
11192 | r[2].r_offset = r[1].r_offset + 4; |
11193 | r[2].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_LO); | |
11194 | r[2].r_addend = r[0].r_addend; | |
11195 | } | |
11196 | else | |
11197 | { | |
11198 | r[2].r_offset = r[1].r_offset + 8 + 8 * use_fake_dep; | |
11199 | r[2].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS); | |
11200 | r[2].r_addend = r[0].r_addend + 8; | |
11201 | if (plt_static_chain) | |
11202 | { | |
11203 | r[3].r_offset = r[2].r_offset + 4; | |
11204 | r[3].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS); | |
11205 | r[3].r_addend = r[0].r_addend + 16; | |
11206 | } | |
c7131b65 | 11207 | } |
176a0d42 AM |
11208 | } |
11209 | } | |
794e51c0 AM |
11210 | if (ALWAYS_EMIT_R2SAVE |
11211 | || stub_entry->stub_type == ppc_stub_plt_call_r2save) | |
a078d95a | 11212 | bfd_put_32 (obfd, STD_R2_0R1 + STK_TOC (htab), p), p += 4; |
397998fc AM |
11213 | if (plt_load_toc) |
11214 | { | |
11215 | bfd_put_32 (obfd, ADDIS_R11_R2 | PPC_HA (offset), p), p += 4; | |
11216 | bfd_put_32 (obfd, LD_R12_0R11 | PPC_LO (offset), p), p += 4; | |
11217 | } | |
11218 | else | |
11219 | { | |
11220 | bfd_put_32 (obfd, ADDIS_R12_R2 | PPC_HA (offset), p), p += 4; | |
11221 | bfd_put_32 (obfd, LD_R12_0R12 | PPC_LO (offset), p), p += 4; | |
11222 | } | |
b9e5796b AM |
11223 | if (plt_load_toc |
11224 | && PPC_HA (offset + 8 + 8 * plt_static_chain) != PPC_HA (offset)) | |
ac2df442 | 11225 | { |
71a39c98 | 11226 | bfd_put_32 (obfd, ADDI_R11_R11 | PPC_LO (offset), p), p += 4; |
ac2df442 AM |
11227 | offset = 0; |
11228 | } | |
71a39c98 | 11229 | bfd_put_32 (obfd, MTCTR_R12, p), p += 4; |
b9e5796b | 11230 | if (plt_load_toc) |
794e51c0 | 11231 | { |
b9e5796b AM |
11232 | if (use_fake_dep) |
11233 | { | |
11234 | bfd_put_32 (obfd, XOR_R2_R12_R12, p), p += 4; | |
11235 | bfd_put_32 (obfd, ADD_R11_R11_R2, p), p += 4; | |
11236 | } | |
11237 | bfd_put_32 (obfd, LD_R2_0R11 | PPC_LO (offset + 8), p), p += 4; | |
11238 | if (plt_static_chain) | |
11239 | bfd_put_32 (obfd, LD_R11_0R11 | PPC_LO (offset + 16), p), p += 4; | |
794e51c0 | 11240 | } |
ac2df442 AM |
11241 | } |
11242 | else | |
11243 | { | |
176a0d42 AM |
11244 | if (r != NULL) |
11245 | { | |
794e51c0 AM |
11246 | if (ALWAYS_EMIT_R2SAVE |
11247 | || stub_entry->stub_type == ppc_stub_plt_call_r2save) | |
11248 | r[0].r_offset += 4; | |
176a0d42 | 11249 | r[0].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_DS); |
b9e5796b | 11250 | if (plt_load_toc) |
176a0d42 | 11251 | { |
b9e5796b | 11252 | if (PPC_HA (offset + 8 + 8 * plt_static_chain) != PPC_HA (offset)) |
c7131b65 | 11253 | { |
b9e5796b AM |
11254 | r[1].r_offset = r[0].r_offset + 4; |
11255 | r[1].r_info = ELF64_R_INFO (0, R_PPC64_TOC16); | |
11256 | r[1].r_addend = r[0].r_addend; | |
11257 | } | |
11258 | else | |
11259 | { | |
11260 | r[1].r_offset = r[0].r_offset + 8 + 8 * use_fake_dep; | |
11261 | r[1].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_DS); | |
11262 | r[1].r_addend = r[0].r_addend + 8 + 8 * plt_static_chain; | |
11263 | if (plt_static_chain) | |
11264 | { | |
11265 | r[2].r_offset = r[1].r_offset + 4; | |
11266 | r[2].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_DS); | |
11267 | r[2].r_addend = r[0].r_addend + 8; | |
11268 | } | |
c7131b65 | 11269 | } |
176a0d42 AM |
11270 | } |
11271 | } | |
794e51c0 AM |
11272 | if (ALWAYS_EMIT_R2SAVE |
11273 | || stub_entry->stub_type == ppc_stub_plt_call_r2save) | |
a078d95a | 11274 | bfd_put_32 (obfd, STD_R2_0R1 + STK_TOC (htab), p), p += 4; |
71a39c98 | 11275 | bfd_put_32 (obfd, LD_R12_0R2 | PPC_LO (offset), p), p += 4; |
b9e5796b AM |
11276 | if (plt_load_toc |
11277 | && PPC_HA (offset + 8 + 8 * plt_static_chain) != PPC_HA (offset)) | |
ac2df442 AM |
11278 | { |
11279 | bfd_put_32 (obfd, ADDI_R2_R2 | PPC_LO (offset), p), p += 4; | |
11280 | offset = 0; | |
11281 | } | |
71a39c98 | 11282 | bfd_put_32 (obfd, MTCTR_R12, p), p += 4; |
b9e5796b | 11283 | if (plt_load_toc) |
794e51c0 | 11284 | { |
b9e5796b AM |
11285 | if (use_fake_dep) |
11286 | { | |
11287 | bfd_put_32 (obfd, XOR_R11_R12_R12, p), p += 4; | |
11288 | bfd_put_32 (obfd, ADD_R2_R2_R11, p), p += 4; | |
11289 | } | |
11290 | if (plt_static_chain) | |
11291 | bfd_put_32 (obfd, LD_R11_0R2 | PPC_LO (offset + 16), p), p += 4; | |
11292 | bfd_put_32 (obfd, LD_R2_0R2 | PPC_LO (offset + 8), p), p += 4; | |
794e51c0 | 11293 | } |
ac2df442 | 11294 | } |
b9e5796b | 11295 | if (plt_load_toc && plt_thread_safe && !use_fake_dep) |
794e51c0 AM |
11296 | { |
11297 | bfd_put_32 (obfd, CMPLDI_R2_0, p), p += 4; | |
11298 | bfd_put_32 (obfd, BNECTR_P4, p), p += 4; | |
22aa0c7e | 11299 | bfd_put_32 (obfd, B_DOT | (cmp_branch_off & 0x3fffffc), p), p += 4; |
794e51c0 AM |
11300 | } |
11301 | else | |
407aa07c | 11302 | bfd_put_32 (obfd, BCTR, p), p += 4; |
5d1634d7 AM |
11303 | return p; |
11304 | } | |
11305 | ||
a7f2871e AM |
11306 | /* Build a special .plt call stub for __tls_get_addr. */ |
11307 | ||
11308 | #define LD_R11_0R3 0xe9630000 | |
11309 | #define LD_R12_0R3 0xe9830000 | |
11310 | #define MR_R0_R3 0x7c601b78 | |
11311 | #define CMPDI_R11_0 0x2c2b0000 | |
11312 | #define ADD_R3_R12_R13 0x7c6c6a14 | |
11313 | #define BEQLR 0x4d820020 | |
11314 | #define MR_R3_R0 0x7c030378 | |
a7f2871e AM |
11315 | #define STD_R11_0R1 0xf9610000 |
11316 | #define BCTRL 0x4e800421 | |
11317 | #define LD_R11_0R1 0xe9610000 | |
a7f2871e AM |
11318 | #define MTLR_R11 0x7d6803a6 |
11319 | ||
11320 | static inline bfd_byte * | |
794e51c0 AM |
11321 | build_tls_get_addr_stub (struct ppc_link_hash_table *htab, |
11322 | struct ppc_stub_hash_entry *stub_entry, | |
11323 | bfd_byte *p, bfd_vma offset, Elf_Internal_Rela *r) | |
a7f2871e | 11324 | { |
e7d1c40c | 11325 | bfd *obfd = htab->params->stub_bfd; |
df136d64 | 11326 | bfd_byte *loc = p; |
794e51c0 | 11327 | |
a7f2871e AM |
11328 | bfd_put_32 (obfd, LD_R11_0R3 + 0, p), p += 4; |
11329 | bfd_put_32 (obfd, LD_R12_0R3 + 8, p), p += 4; | |
11330 | bfd_put_32 (obfd, MR_R0_R3, p), p += 4; | |
11331 | bfd_put_32 (obfd, CMPDI_R11_0, p), p += 4; | |
11332 | bfd_put_32 (obfd, ADD_R3_R12_R13, p), p += 4; | |
11333 | bfd_put_32 (obfd, BEQLR, p), p += 4; | |
11334 | bfd_put_32 (obfd, MR_R3_R0, p), p += 4; | |
f378ab09 AM |
11335 | if (r != NULL) |
11336 | r[0].r_offset += 7 * 4; | |
e81b4c93 | 11337 | if (stub_entry->stub_type != ppc_stub_plt_call_r2save) |
f378ab09 AM |
11338 | return build_plt_stub (htab, stub_entry, p, offset, r); |
11339 | ||
a7f2871e | 11340 | bfd_put_32 (obfd, MFLR_R11, p), p += 4; |
a078d95a | 11341 | bfd_put_32 (obfd, STD_R11_0R1 + STK_LINKER (htab), p), p += 4; |
a7f2871e AM |
11342 | |
11343 | if (r != NULL) | |
f378ab09 | 11344 | r[0].r_offset += 2 * 4; |
794e51c0 | 11345 | p = build_plt_stub (htab, stub_entry, p, offset, r); |
407aa07c | 11346 | bfd_put_32 (obfd, BCTRL, p - 4); |
a7f2871e | 11347 | |
a078d95a | 11348 | bfd_put_32 (obfd, LD_R2_0R1 + STK_TOC (htab), p), p += 4; |
bd4d2eaa | 11349 | bfd_put_32 (obfd, LD_R11_0R1 + STK_LINKER (htab), p), p += 4; |
a7f2871e AM |
11350 | bfd_put_32 (obfd, MTLR_R11, p), p += 4; |
11351 | bfd_put_32 (obfd, BLR, p), p += 4; | |
11352 | ||
df136d64 AM |
11353 | if (htab->glink_eh_frame != NULL |
11354 | && htab->glink_eh_frame->size != 0) | |
11355 | { | |
11356 | bfd_byte *base, *eh; | |
11357 | unsigned int lr_used, delta; | |
11358 | ||
11359 | base = htab->glink_eh_frame->contents + stub_entry->group->eh_base + 17; | |
11360 | eh = base + stub_entry->group->eh_size; | |
11361 | lr_used = stub_entry->stub_offset + (p - 20 - loc); | |
11362 | delta = lr_used - stub_entry->group->lr_restore; | |
11363 | stub_entry->group->lr_restore = lr_used + 16; | |
11364 | eh = eh_advance (htab->elf.dynobj, eh, delta); | |
11365 | *eh++ = DW_CFA_offset_extended_sf; | |
11366 | *eh++ = 65; | |
11367 | *eh++ = -(STK_LINKER (htab) / 8) & 0x7f; | |
11368 | *eh++ = DW_CFA_advance_loc + 4; | |
11369 | *eh++ = DW_CFA_restore_extended; | |
11370 | *eh++ = 65; | |
11371 | stub_entry->group->eh_size = eh - base; | |
11372 | } | |
a7f2871e AM |
11373 | return p; |
11374 | } | |
11375 | ||
176a0d42 AM |
11376 | static Elf_Internal_Rela * |
11377 | get_relocs (asection *sec, int count) | |
11378 | { | |
11379 | Elf_Internal_Rela *relocs; | |
11380 | struct bfd_elf_section_data *elfsec_data; | |
11381 | ||
11382 | elfsec_data = elf_section_data (sec); | |
11383 | relocs = elfsec_data->relocs; | |
11384 | if (relocs == NULL) | |
11385 | { | |
11386 | bfd_size_type relsize; | |
11387 | relsize = sec->reloc_count * sizeof (*relocs); | |
11388 | relocs = bfd_alloc (sec->owner, relsize); | |
11389 | if (relocs == NULL) | |
11390 | return NULL; | |
11391 | elfsec_data->relocs = relocs; | |
d4730f92 BS |
11392 | elfsec_data->rela.hdr = bfd_zalloc (sec->owner, |
11393 | sizeof (Elf_Internal_Shdr)); | |
11394 | if (elfsec_data->rela.hdr == NULL) | |
11395 | return NULL; | |
11396 | elfsec_data->rela.hdr->sh_size = (sec->reloc_count | |
11397 | * sizeof (Elf64_External_Rela)); | |
11398 | elfsec_data->rela.hdr->sh_entsize = sizeof (Elf64_External_Rela); | |
176a0d42 AM |
11399 | sec->reloc_count = 0; |
11400 | } | |
11401 | relocs += sec->reloc_count; | |
11402 | sec->reloc_count += count; | |
11403 | return relocs; | |
11404 | } | |
11405 | ||
aa374f67 | 11406 | static bfd_vma |
25f53a85 | 11407 | get_r2off (struct bfd_link_info *info, |
aa374f67 AM |
11408 | struct ppc_stub_hash_entry *stub_entry) |
11409 | { | |
25f53a85 | 11410 | struct ppc_link_hash_table *htab = ppc_hash_table (info); |
6f20ed8a | 11411 | bfd_vma r2off = htab->sec_info[stub_entry->target_section->id].toc_off; |
aa374f67 AM |
11412 | |
11413 | if (r2off == 0) | |
11414 | { | |
11415 | /* Support linking -R objects. Get the toc pointer from the | |
11416 | opd entry. */ | |
11417 | char buf[8]; | |
b9e5796b AM |
11418 | if (!htab->opd_abi) |
11419 | return r2off; | |
aa374f67 AM |
11420 | asection *opd = stub_entry->h->elf.root.u.def.section; |
11421 | bfd_vma opd_off = stub_entry->h->elf.root.u.def.value; | |
11422 | ||
11423 | if (strcmp (opd->name, ".opd") != 0 | |
11424 | || opd->reloc_count != 0) | |
11425 | { | |
2cdcc330 AM |
11426 | info->callbacks->einfo |
11427 | (_("%P: cannot find opd entry toc for `%pT'\n"), | |
11428 | stub_entry->h->elf.root.root.string); | |
aa374f67 | 11429 | bfd_set_error (bfd_error_bad_value); |
a7c49797 | 11430 | return (bfd_vma) -1; |
aa374f67 AM |
11431 | } |
11432 | if (!bfd_get_section_contents (opd->owner, opd, buf, opd_off + 8, 8)) | |
a7c49797 | 11433 | return (bfd_vma) -1; |
aa374f67 | 11434 | r2off = bfd_get_64 (opd->owner, buf); |
25f53a85 | 11435 | r2off -= elf_gp (info->output_bfd); |
aa374f67 | 11436 | } |
6f20ed8a | 11437 | r2off -= htab->sec_info[stub_entry->group->link_sec->id].toc_off; |
aa374f67 AM |
11438 | return r2off; |
11439 | } | |
11440 | ||
b34976b6 | 11441 | static bfd_boolean |
4ce794b7 | 11442 | ppc_build_one_stub (struct bfd_hash_entry *gen_entry, void *in_arg) |
5d1634d7 | 11443 | { |
721956f4 AM |
11444 | struct ppc_stub_hash_entry *stub_entry; |
11445 | struct ppc_branch_hash_entry *br_entry; | |
5d1634d7 AM |
11446 | struct bfd_link_info *info; |
11447 | struct ppc_link_hash_table *htab; | |
721956f4 AM |
11448 | bfd_byte *loc; |
11449 | bfd_byte *p; | |
1aa42141 | 11450 | bfd_vma targ, off; |
176a0d42 | 11451 | Elf_Internal_Rela *r; |
e054468f | 11452 | asection *plt; |
5d1634d7 | 11453 | |
721956f4 AM |
11454 | /* Massage our args to the form they really have. */ |
11455 | stub_entry = (struct ppc_stub_hash_entry *) gen_entry; | |
4ce794b7 | 11456 | info = in_arg; |
5d1634d7 | 11457 | |
5d1634d7 | 11458 | htab = ppc_hash_table (info); |
4dfe6ac6 NC |
11459 | if (htab == NULL) |
11460 | return FALSE; | |
5d1634d7 | 11461 | |
1aa42141 | 11462 | BFD_ASSERT (stub_entry->stub_offset >= stub_entry->group->stub_sec->size); |
6f20ed8a | 11463 | loc = stub_entry->group->stub_sec->contents + stub_entry->stub_offset; |
721956f4 | 11464 | |
4ce794b7 | 11465 | htab->stub_count[stub_entry->stub_type - 1] += 1; |
721956f4 | 11466 | switch (stub_entry->stub_type) |
5d1634d7 | 11467 | { |
721956f4 | 11468 | case ppc_stub_long_branch: |
ad8e1ba5 | 11469 | case ppc_stub_long_branch_r2off: |
721956f4 | 11470 | /* Branches are relative. This is where we are going to. */ |
1aa42141 | 11471 | targ = (stub_entry->target_value |
6911b7dc AM |
11472 | + stub_entry->target_section->output_offset |
11473 | + stub_entry->target_section->output_section->vma); | |
1aa42141 | 11474 | targ += PPC64_LOCAL_ENTRY_OFFSET (stub_entry->other); |
5d1634d7 | 11475 | |
721956f4 | 11476 | /* And this is where we are coming from. */ |
1aa42141 AM |
11477 | off = (stub_entry->stub_offset |
11478 | + stub_entry->group->stub_sec->output_offset | |
11479 | + stub_entry->group->stub_sec->output_section->vma); | |
11480 | off = targ - off; | |
e86ce104 | 11481 | |
9e390558 | 11482 | p = loc; |
ac2df442 | 11483 | if (stub_entry->stub_type == ppc_stub_long_branch_r2off) |
ad8e1ba5 | 11484 | { |
25f53a85 | 11485 | bfd_vma r2off = get_r2off (info, stub_entry); |
ad8e1ba5 | 11486 | |
a7c49797 | 11487 | if (r2off == (bfd_vma) -1) |
aa374f67 AM |
11488 | { |
11489 | htab->stub_error = TRUE; | |
11490 | return FALSE; | |
11491 | } | |
9e390558 AM |
11492 | bfd_put_32 (htab->params->stub_bfd, STD_R2_0R1 + STK_TOC (htab), p); |
11493 | p += 4; | |
ac2df442 AM |
11494 | if (PPC_HA (r2off) != 0) |
11495 | { | |
e7d1c40c | 11496 | bfd_put_32 (htab->params->stub_bfd, |
9e390558 AM |
11497 | ADDIS_R2_R2 | PPC_HA (r2off), p); |
11498 | p += 4; | |
a7c49797 AM |
11499 | } |
11500 | if (PPC_LO (r2off) != 0) | |
11501 | { | |
11502 | bfd_put_32 (htab->params->stub_bfd, | |
9e390558 AM |
11503 | ADDI_R2_R2 | PPC_LO (r2off), p); |
11504 | p += 4; | |
ac2df442 | 11505 | } |
9e390558 | 11506 | off -= p - loc; |
ad8e1ba5 | 11507 | } |
9e390558 AM |
11508 | bfd_put_32 (htab->params->stub_bfd, B_DOT | (off & 0x3fffffc), p); |
11509 | p += 4; | |
ad8e1ba5 | 11510 | |
5c3dead3 AM |
11511 | if (off + (1 << 25) >= (bfd_vma) (1 << 26)) |
11512 | { | |
cf97bcb0 AM |
11513 | _bfd_error_handler |
11514 | (_("long branch stub `%s' offset overflow"), | |
bc30df16 | 11515 | stub_entry->root.string); |
5c3dead3 AM |
11516 | htab->stub_error = TRUE; |
11517 | return FALSE; | |
11518 | } | |
ee75fd95 AM |
11519 | |
11520 | if (info->emitrelocations) | |
11521 | { | |
6f20ed8a | 11522 | r = get_relocs (stub_entry->group->stub_sec, 1); |
176a0d42 AM |
11523 | if (r == NULL) |
11524 | return FALSE; | |
9e390558 | 11525 | r->r_offset = p - 4 - stub_entry->group->stub_sec->contents; |
ee75fd95 | 11526 | r->r_info = ELF64_R_INFO (0, R_PPC64_REL24); |
1aa42141 | 11527 | r->r_addend = targ; |
ee75fd95 AM |
11528 | if (stub_entry->h != NULL) |
11529 | { | |
11530 | struct elf_link_hash_entry **hashes; | |
11531 | unsigned long symndx; | |
11532 | struct ppc_link_hash_entry *h; | |
11533 | ||
e7d1c40c | 11534 | hashes = elf_sym_hashes (htab->params->stub_bfd); |
ee75fd95 AM |
11535 | if (hashes == NULL) |
11536 | { | |
11537 | bfd_size_type hsize; | |
11538 | ||
11539 | hsize = (htab->stub_globals + 1) * sizeof (*hashes); | |
e7d1c40c | 11540 | hashes = bfd_zalloc (htab->params->stub_bfd, hsize); |
ee75fd95 AM |
11541 | if (hashes == NULL) |
11542 | return FALSE; | |
e7d1c40c | 11543 | elf_sym_hashes (htab->params->stub_bfd) = hashes; |
ee75fd95 AM |
11544 | htab->stub_globals = 1; |
11545 | } | |
11546 | symndx = htab->stub_globals++; | |
11547 | h = stub_entry->h; | |
11548 | hashes[symndx] = &h->elf; | |
11549 | r->r_info = ELF64_R_INFO (symndx, R_PPC64_REL24); | |
11550 | if (h->oh != NULL && h->oh->is_func) | |
b31867b6 | 11551 | h = ppc_follow_link (h->oh); |
ee75fd95 AM |
11552 | if (h->elf.root.u.def.section != stub_entry->target_section) |
11553 | /* H is an opd symbol. The addend must be zero. */ | |
11554 | r->r_addend = 0; | |
11555 | else | |
11556 | { | |
11557 | off = (h->elf.root.u.def.value | |
11558 | + h->elf.root.u.def.section->output_offset | |
11559 | + h->elf.root.u.def.section->output_section->vma); | |
11560 | r->r_addend -= off; | |
11561 | } | |
11562 | } | |
11563 | } | |
721956f4 | 11564 | break; |
e86ce104 | 11565 | |
721956f4 | 11566 | case ppc_stub_plt_branch: |
ad8e1ba5 | 11567 | case ppc_stub_plt_branch_r2off: |
721956f4 AM |
11568 | br_entry = ppc_branch_hash_lookup (&htab->branch_hash_table, |
11569 | stub_entry->root.string + 9, | |
b34976b6 | 11570 | FALSE, FALSE); |
721956f4 AM |
11571 | if (br_entry == NULL) |
11572 | { | |
cf97bcb0 AM |
11573 | _bfd_error_handler (_("can't find branch stub `%s'"), |
11574 | stub_entry->root.string); | |
b34976b6 AM |
11575 | htab->stub_error = TRUE; |
11576 | return FALSE; | |
721956f4 AM |
11577 | } |
11578 | ||
1aa42141 | 11579 | targ = (stub_entry->target_value |
176a0d42 AM |
11580 | + stub_entry->target_section->output_offset |
11581 | + stub_entry->target_section->output_section->vma); | |
6911b7dc | 11582 | if (stub_entry->stub_type != ppc_stub_plt_branch_r2off) |
1aa42141 | 11583 | targ += PPC64_LOCAL_ENTRY_OFFSET (stub_entry->other); |
721956f4 | 11584 | |
1aa42141 | 11585 | bfd_put_64 (htab->brlt->owner, targ, |
4ce794b7 | 11586 | htab->brlt->contents + br_entry->offset); |
721956f4 | 11587 | |
f94498ff | 11588 | if (br_entry->iter == htab->stub_iteration) |
721956f4 | 11589 | { |
f94498ff | 11590 | br_entry->iter = 0; |
84f5d08e | 11591 | |
f94498ff | 11592 | if (htab->relbrlt != NULL) |
84f5d08e | 11593 | { |
f94498ff AM |
11594 | /* Create a reloc for the branch lookup table entry. */ |
11595 | Elf_Internal_Rela rela; | |
11596 | bfd_byte *rl; | |
11597 | ||
11598 | rela.r_offset = (br_entry->offset | |
11599 | + htab->brlt->output_offset | |
11600 | + htab->brlt->output_section->vma); | |
11601 | rela.r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE); | |
1aa42141 | 11602 | rela.r_addend = targ; |
f94498ff AM |
11603 | |
11604 | rl = htab->relbrlt->contents; | |
11605 | rl += (htab->relbrlt->reloc_count++ | |
11606 | * sizeof (Elf64_External_Rela)); | |
11607 | bfd_elf64_swap_reloca_out (htab->relbrlt->owner, &rela, rl); | |
11608 | } | |
11609 | else if (info->emitrelocations) | |
11610 | { | |
176a0d42 AM |
11611 | r = get_relocs (htab->brlt, 1); |
11612 | if (r == NULL) | |
11613 | return FALSE; | |
11614 | /* brlt, being SEC_LINKER_CREATED does not go through the | |
11615 | normal reloc processing. Symbols and offsets are not | |
11616 | translated from input file to output file form, so | |
11617 | set up the offset per the output file. */ | |
f94498ff AM |
11618 | r->r_offset = (br_entry->offset |
11619 | + htab->brlt->output_offset | |
11620 | + htab->brlt->output_section->vma); | |
11621 | r->r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE); | |
1aa42141 | 11622 | r->r_addend = targ; |
84f5d08e | 11623 | } |
84f5d08e | 11624 | } |
721956f4 | 11625 | |
1aa42141 | 11626 | targ = (br_entry->offset |
176a0d42 AM |
11627 | + htab->brlt->output_offset |
11628 | + htab->brlt->output_section->vma); | |
11629 | ||
1aa42141 AM |
11630 | off = (elf_gp (info->output_bfd) |
11631 | + htab->sec_info[stub_entry->group->link_sec->id].toc_off); | |
11632 | off = targ - off; | |
721956f4 | 11633 | |
ad8e1ba5 | 11634 | if (off + 0x80008000 > 0xffffffff || (off & 7) != 0) |
5d1634d7 | 11635 | { |
25f53a85 | 11636 | info->callbacks->einfo |
c1c8c1ef | 11637 | (_("%P: linkage table error against `%pT'\n"), |
721956f4 | 11638 | stub_entry->root.string); |
5d1634d7 | 11639 | bfd_set_error (bfd_error_bad_value); |
b34976b6 AM |
11640 | htab->stub_error = TRUE; |
11641 | return FALSE; | |
5d1634d7 | 11642 | } |
41bd81ab | 11643 | |
176a0d42 AM |
11644 | if (info->emitrelocations) |
11645 | { | |
6f20ed8a | 11646 | r = get_relocs (stub_entry->group->stub_sec, 1 + (PPC_HA (off) != 0)); |
176a0d42 AM |
11647 | if (r == NULL) |
11648 | return FALSE; | |
6f20ed8a | 11649 | r[0].r_offset = loc - stub_entry->group->stub_sec->contents; |
7cfbafbc AM |
11650 | if (bfd_big_endian (info->output_bfd)) |
11651 | r[0].r_offset += 2; | |
00f412ee | 11652 | if (stub_entry->stub_type == ppc_stub_plt_branch_r2off) |
176a0d42 AM |
11653 | r[0].r_offset += 4; |
11654 | r[0].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_DS); | |
1aa42141 | 11655 | r[0].r_addend = targ; |
176a0d42 AM |
11656 | if (PPC_HA (off) != 0) |
11657 | { | |
11658 | r[0].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_HA); | |
11659 | r[1].r_offset = r[0].r_offset + 4; | |
11660 | r[1].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS); | |
11661 | r[1].r_addend = r[0].r_addend; | |
11662 | } | |
11663 | } | |
11664 | ||
9e390558 | 11665 | p = loc; |
00f412ee | 11666 | if (stub_entry->stub_type != ppc_stub_plt_branch_r2off) |
ad8e1ba5 | 11667 | { |
176a0d42 | 11668 | if (PPC_HA (off) != 0) |
ac2df442 | 11669 | { |
e7d1c40c | 11670 | bfd_put_32 (htab->params->stub_bfd, |
9e390558 AM |
11671 | ADDIS_R12_R2 | PPC_HA (off), p); |
11672 | p += 4; | |
e7d1c40c | 11673 | bfd_put_32 (htab->params->stub_bfd, |
9e390558 | 11674 | LD_R12_0R12 | PPC_LO (off), p); |
ac2df442 AM |
11675 | } |
11676 | else | |
9e390558 AM |
11677 | bfd_put_32 (htab->params->stub_bfd, |
11678 | LD_R12_0R2 | PPC_LO (off), p); | |
ad8e1ba5 AM |
11679 | } |
11680 | else | |
11681 | { | |
25f53a85 | 11682 | bfd_vma r2off = get_r2off (info, stub_entry); |
aa374f67 | 11683 | |
a7c49797 | 11684 | if (r2off == (bfd_vma) -1) |
aa374f67 AM |
11685 | { |
11686 | htab->stub_error = TRUE; | |
11687 | return FALSE; | |
11688 | } | |
ad8e1ba5 | 11689 | |
9e390558 AM |
11690 | bfd_put_32 (htab->params->stub_bfd, STD_R2_0R1 + STK_TOC (htab), p); |
11691 | p += 4; | |
176a0d42 | 11692 | if (PPC_HA (off) != 0) |
ac2df442 | 11693 | { |
e7d1c40c | 11694 | bfd_put_32 (htab->params->stub_bfd, |
9e390558 AM |
11695 | ADDIS_R12_R2 | PPC_HA (off), p); |
11696 | p += 4; | |
e7d1c40c | 11697 | bfd_put_32 (htab->params->stub_bfd, |
9e390558 | 11698 | LD_R12_0R12 | PPC_LO (off), p); |
ac2df442 AM |
11699 | } |
11700 | else | |
9e390558 | 11701 | bfd_put_32 (htab->params->stub_bfd, LD_R12_0R2 | PPC_LO (off), p); |
ac2df442 AM |
11702 | |
11703 | if (PPC_HA (r2off) != 0) | |
11704 | { | |
9e390558 | 11705 | p += 4; |
e7d1c40c | 11706 | bfd_put_32 (htab->params->stub_bfd, |
9e390558 | 11707 | ADDIS_R2_R2 | PPC_HA (r2off), p); |
00f412ee AM |
11708 | } |
11709 | if (PPC_LO (r2off) != 0) | |
11710 | { | |
9e390558 | 11711 | p += 4; |
e7d1c40c | 11712 | bfd_put_32 (htab->params->stub_bfd, |
9e390558 | 11713 | ADDI_R2_R2 | PPC_LO (r2off), p); |
ac2df442 | 11714 | } |
ad8e1ba5 | 11715 | } |
9e390558 AM |
11716 | p += 4; |
11717 | bfd_put_32 (htab->params->stub_bfd, MTCTR_R12, p); | |
11718 | p += 4; | |
407aa07c AM |
11719 | bfd_put_32 (htab->params->stub_bfd, BCTR, p); |
11720 | p += 4; | |
721956f4 | 11721 | break; |
5d1634d7 | 11722 | |
05d0e962 AM |
11723 | case ppc_stub_long_branch_notoc: |
11724 | case ppc_stub_long_branch_both: | |
11725 | case ppc_stub_plt_branch_notoc: | |
11726 | case ppc_stub_plt_branch_both: | |
11727 | case ppc_stub_plt_call_notoc: | |
11728 | case ppc_stub_plt_call_both: | |
11729 | p = loc; | |
11730 | off = (8 + stub_entry->stub_offset | |
11731 | + stub_entry->group->stub_sec->output_offset | |
11732 | + stub_entry->group->stub_sec->output_section->vma); | |
11733 | if (stub_entry->stub_type == ppc_stub_long_branch_both | |
11734 | || stub_entry->stub_type == ppc_stub_plt_branch_both | |
11735 | || stub_entry->stub_type == ppc_stub_plt_call_both) | |
11736 | { | |
11737 | off += 4; | |
11738 | bfd_put_32 (htab->params->stub_bfd, STD_R2_0R1 + STK_TOC (htab), p); | |
11739 | p += 4; | |
11740 | } | |
11741 | if (stub_entry->stub_type >= ppc_stub_plt_call_notoc) | |
11742 | { | |
11743 | targ = stub_entry->plt_ent->plt.offset & ~1; | |
11744 | if (targ >= (bfd_vma) -2) | |
11745 | abort (); | |
11746 | ||
11747 | plt = htab->elf.splt; | |
11748 | if (!htab->elf.dynamic_sections_created | |
11749 | || stub_entry->h == NULL | |
11750 | || stub_entry->h->elf.dynindx == -1) | |
11751 | { | |
11752 | if (stub_entry->symtype == STT_GNU_IFUNC) | |
11753 | plt = htab->elf.iplt; | |
11754 | else | |
11755 | plt = htab->pltlocal; | |
11756 | } | |
11757 | targ += plt->output_offset + plt->output_section->vma; | |
11758 | } | |
11759 | else | |
11760 | targ = (stub_entry->target_value | |
11761 | + stub_entry->target_section->output_offset | |
11762 | + stub_entry->target_section->output_section->vma); | |
11763 | off = targ - off; | |
11764 | bfd_put_32 (htab->params->stub_bfd, MFLR_R12, p); | |
11765 | p += 4; | |
11766 | bfd_put_32 (htab->params->stub_bfd, BCL_20_31, p); | |
11767 | p += 4; | |
11768 | bfd_put_32 (htab->params->stub_bfd, MFLR_R11, p); | |
11769 | p += 4; | |
11770 | bfd_put_32 (htab->params->stub_bfd, MTLR_R12, p); | |
11771 | p += 4; | |
11772 | p = build_offset (htab->params->stub_bfd, p, off, | |
11773 | stub_entry->stub_type >= ppc_stub_plt_call_notoc); | |
11774 | if (stub_entry->stub_type == ppc_stub_long_branch_notoc) | |
11775 | { | |
11776 | off += 8; | |
11777 | bfd_put_32 (htab->params->stub_bfd, | |
11778 | B_DOT | ((off - (p - loc)) & 0x3fffffc), p); | |
11779 | } | |
11780 | else if (stub_entry->stub_type == ppc_stub_long_branch_both) | |
11781 | { | |
11782 | off += 12; | |
11783 | bfd_put_32 (htab->params->stub_bfd, | |
11784 | B_DOT | ((off - (p - loc)) & 0x3fffffc), p); | |
11785 | } | |
11786 | else | |
11787 | { | |
11788 | bfd_put_32 (htab->params->stub_bfd, MTCTR_R12, p); | |
11789 | p += 4; | |
11790 | bfd_put_32 (htab->params->stub_bfd, BCTR, p); | |
11791 | } | |
11792 | p += 4; | |
df136d64 AM |
11793 | |
11794 | if (htab->glink_eh_frame != NULL | |
11795 | && htab->glink_eh_frame->size != 0) | |
11796 | { | |
11797 | bfd_byte *base, *eh; | |
11798 | unsigned int lr_used, delta; | |
11799 | ||
11800 | base = (htab->glink_eh_frame->contents | |
11801 | + stub_entry->group->eh_base + 17); | |
11802 | eh = base + stub_entry->group->eh_size; | |
11803 | lr_used = stub_entry->stub_offset + 8; | |
11804 | if (stub_entry->stub_type == ppc_stub_long_branch_both | |
11805 | || stub_entry->stub_type == ppc_stub_plt_branch_both | |
11806 | || stub_entry->stub_type == ppc_stub_plt_call_both) | |
11807 | lr_used += 4; | |
11808 | delta = lr_used - stub_entry->group->lr_restore; | |
11809 | stub_entry->group->lr_restore = lr_used + 8; | |
11810 | eh = eh_advance (htab->elf.dynobj, eh, delta); | |
11811 | *eh++ = DW_CFA_register; | |
11812 | *eh++ = 65; | |
11813 | *eh++ = 12; | |
11814 | *eh++ = DW_CFA_advance_loc + 2; | |
11815 | *eh++ = DW_CFA_restore_extended; | |
11816 | *eh++ = 65; | |
11817 | stub_entry->group->eh_size = eh - base; | |
11818 | } | |
05d0e962 AM |
11819 | break; |
11820 | ||
721956f4 | 11821 | case ppc_stub_plt_call: |
794e51c0 | 11822 | case ppc_stub_plt_call_r2save: |
e054468f | 11823 | if (stub_entry->h != NULL |
b31867b6 AM |
11824 | && stub_entry->h->is_func_descriptor |
11825 | && stub_entry->h->oh != NULL) | |
c862ae31 | 11826 | { |
b31867b6 AM |
11827 | struct ppc_link_hash_entry *fh = ppc_follow_link (stub_entry->h->oh); |
11828 | ||
11829 | /* If the old-ABI "dot-symbol" is undefined make it weak so | |
6f20ed8a | 11830 | we don't get a link error from RELOC_FOR_GLOBAL_SYMBOL. */ |
8c5b4e52 AM |
11831 | if (fh->elf.root.type == bfd_link_hash_undefined |
11832 | && (stub_entry->h->elf.root.type == bfd_link_hash_defined | |
11833 | || stub_entry->h->elf.root.type == bfd_link_hash_defweak)) | |
b31867b6 | 11834 | fh->elf.root.type = bfd_link_hash_undefweak; |
c862ae31 AM |
11835 | } |
11836 | ||
721956f4 | 11837 | /* Now build the stub. */ |
1aa42141 AM |
11838 | targ = stub_entry->plt_ent->plt.offset & ~1; |
11839 | if (targ >= (bfd_vma) -2) | |
721956f4 AM |
11840 | abort (); |
11841 | ||
33e44f2e | 11842 | plt = htab->elf.splt; |
25f23106 AM |
11843 | if (!htab->elf.dynamic_sections_created |
11844 | || stub_entry->h == NULL | |
11845 | || stub_entry->h->elf.dynindx == -1) | |
2d7ad24e AM |
11846 | { |
11847 | if (stub_entry->symtype == STT_GNU_IFUNC) | |
11848 | plt = htab->elf.iplt; | |
11849 | else | |
11850 | plt = htab->pltlocal; | |
11851 | } | |
1aa42141 | 11852 | targ += plt->output_offset + plt->output_section->vma; |
e054468f | 11853 | |
1aa42141 AM |
11854 | off = (elf_gp (info->output_bfd) |
11855 | + htab->sec_info[stub_entry->group->link_sec->id].toc_off); | |
11856 | off = targ - off; | |
721956f4 | 11857 | |
ad8e1ba5 | 11858 | if (off + 0x80008000 > 0xffffffff || (off & 7) != 0) |
721956f4 | 11859 | { |
25f53a85 | 11860 | info->callbacks->einfo |
695344c0 | 11861 | /* xgettext:c-format */ |
c1c8c1ef | 11862 | (_("%P: linkage table error against `%pT'\n"), |
e054468f AM |
11863 | stub_entry->h != NULL |
11864 | ? stub_entry->h->elf.root.root.string | |
11865 | : "<local sym>"); | |
721956f4 | 11866 | bfd_set_error (bfd_error_bad_value); |
b34976b6 AM |
11867 | htab->stub_error = TRUE; |
11868 | return FALSE; | |
721956f4 AM |
11869 | } |
11870 | ||
176a0d42 AM |
11871 | r = NULL; |
11872 | if (info->emitrelocations) | |
11873 | { | |
6f20ed8a | 11874 | r = get_relocs (stub_entry->group->stub_sec, |
3ba720c7 AM |
11875 | ((PPC_HA (off) != 0) |
11876 | + (htab->opd_abi | |
e7d1c40c | 11877 | ? 2 + (htab->params->plt_static_chain |
3ba720c7 AM |
11878 | && PPC_HA (off + 16) == PPC_HA (off)) |
11879 | : 1))); | |
176a0d42 AM |
11880 | if (r == NULL) |
11881 | return FALSE; | |
6f20ed8a | 11882 | r[0].r_offset = loc - stub_entry->group->stub_sec->contents; |
7cfbafbc AM |
11883 | if (bfd_big_endian (info->output_bfd)) |
11884 | r[0].r_offset += 2; | |
1aa42141 | 11885 | r[0].r_addend = targ; |
176a0d42 | 11886 | } |
a7f2871e AM |
11887 | if (stub_entry->h != NULL |
11888 | && (stub_entry->h == htab->tls_get_addr_fd | |
11889 | || stub_entry->h == htab->tls_get_addr) | |
7c9cf415 | 11890 | && htab->params->tls_get_addr_opt) |
794e51c0 | 11891 | p = build_tls_get_addr_stub (htab, stub_entry, loc, off, r); |
a7f2871e | 11892 | else |
794e51c0 | 11893 | p = build_plt_stub (htab, stub_entry, loc, off, r); |
721956f4 AM |
11894 | break; |
11895 | ||
a4b6fadd AM |
11896 | case ppc_stub_save_res: |
11897 | return TRUE; | |
11898 | ||
721956f4 AM |
11899 | default: |
11900 | BFD_FAIL (); | |
b34976b6 | 11901 | return FALSE; |
721956f4 AM |
11902 | } |
11903 | ||
1aa42141 | 11904 | stub_entry->group->stub_sec->size = stub_entry->stub_offset + (p - loc); |
97b639ba | 11905 | |
e7d1c40c | 11906 | if (htab->params->emit_stub_syms) |
97b639ba AM |
11907 | { |
11908 | struct elf_link_hash_entry *h; | |
ee75fd95 AM |
11909 | size_t len1, len2; |
11910 | char *name; | |
11911 | const char *const stub_str[] = { "long_branch", | |
05d0e962 AM |
11912 | "long_branch", |
11913 | "long_branch", | |
3f6ff479 AM |
11914 | "long_branch", |
11915 | "plt_branch", | |
ee75fd95 | 11916 | "plt_branch", |
05d0e962 AM |
11917 | "plt_branch", |
11918 | "plt_branch", | |
11919 | "plt_call", | |
11920 | "plt_call", | |
794e51c0 | 11921 | "plt_call", |
ee75fd95 AM |
11922 | "plt_call" }; |
11923 | ||
11924 | len1 = strlen (stub_str[stub_entry->stub_type - 1]); | |
11925 | len2 = strlen (stub_entry->root.string); | |
11926 | name = bfd_malloc (len1 + len2 + 2); | |
11927 | if (name == NULL) | |
11928 | return FALSE; | |
11929 | memcpy (name, stub_entry->root.string, 9); | |
11930 | memcpy (name + 9, stub_str[stub_entry->stub_type - 1], len1); | |
11931 | memcpy (name + len1 + 9, stub_entry->root.string + 8, len2 - 8 + 1); | |
11932 | h = elf_link_hash_lookup (&htab->elf, name, TRUE, FALSE, FALSE); | |
97b639ba AM |
11933 | if (h == NULL) |
11934 | return FALSE; | |
11935 | if (h->root.type == bfd_link_hash_new) | |
11936 | { | |
11937 | h->root.type = bfd_link_hash_defined; | |
6f20ed8a | 11938 | h->root.u.def.section = stub_entry->group->stub_sec; |
97b639ba | 11939 | h->root.u.def.value = stub_entry->stub_offset; |
f5385ebf AM |
11940 | h->ref_regular = 1; |
11941 | h->def_regular = 1; | |
11942 | h->ref_regular_nonweak = 1; | |
11943 | h->forced_local = 1; | |
11944 | h->non_elf = 0; | |
2ec55de3 | 11945 | h->root.linker_def = 1; |
97b639ba AM |
11946 | } |
11947 | } | |
11948 | ||
b34976b6 | 11949 | return TRUE; |
721956f4 AM |
11950 | } |
11951 | ||
11952 | /* As above, but don't actually build the stub. Just bump offset so | |
11953 | we know stub section sizes, and select plt_branch stubs where | |
11954 | long_branch stubs won't do. */ | |
11955 | ||
b34976b6 | 11956 | static bfd_boolean |
4ce794b7 | 11957 | ppc_size_one_stub (struct bfd_hash_entry *gen_entry, void *in_arg) |
721956f4 AM |
11958 | { |
11959 | struct ppc_stub_hash_entry *stub_entry; | |
63bc6f6c | 11960 | struct bfd_link_info *info; |
721956f4 | 11961 | struct ppc_link_hash_table *htab; |
1aa42141 | 11962 | bfd_vma targ, off; |
721956f4 AM |
11963 | int size; |
11964 | ||
11965 | /* Massage our args to the form they really have. */ | |
11966 | stub_entry = (struct ppc_stub_hash_entry *) gen_entry; | |
63bc6f6c AM |
11967 | info = in_arg; |
11968 | ||
11969 | htab = ppc_hash_table (info); | |
4dfe6ac6 NC |
11970 | if (htab == NULL) |
11971 | return FALSE; | |
721956f4 | 11972 | |
1aa42141 AM |
11973 | /* Make a note of the offset within the stubs for this entry. */ |
11974 | stub_entry->stub_offset = stub_entry->group->stub_sec->size; | |
11975 | ||
a4b6fadd AM |
11976 | if (stub_entry->h != NULL |
11977 | && stub_entry->h->save_res | |
11978 | && stub_entry->h->elf.root.type == bfd_link_hash_defined | |
11979 | && stub_entry->h->elf.root.u.def.section == htab->sfpr) | |
11980 | { | |
11981 | /* Don't make stubs to out-of-line register save/restore | |
11982 | functions. Instead, emit copies of the functions. */ | |
11983 | stub_entry->group->needs_save_res = 1; | |
11984 | stub_entry->stub_type = ppc_stub_save_res; | |
11985 | return TRUE; | |
11986 | } | |
11987 | ||
05d0e962 AM |
11988 | if (stub_entry->stub_type >= ppc_stub_plt_call |
11989 | && stub_entry->stub_type <= ppc_stub_plt_call_both) | |
721956f4 | 11990 | { |
e054468f | 11991 | asection *plt; |
1aa42141 AM |
11992 | targ = stub_entry->plt_ent->plt.offset & ~(bfd_vma) 1; |
11993 | if (targ >= (bfd_vma) -2) | |
411e1bfb | 11994 | abort (); |
33e44f2e | 11995 | plt = htab->elf.splt; |
25f23106 AM |
11996 | if (!htab->elf.dynamic_sections_created |
11997 | || stub_entry->h == NULL | |
11998 | || stub_entry->h->elf.dynindx == -1) | |
2d7ad24e AM |
11999 | { |
12000 | if (stub_entry->symtype == STT_GNU_IFUNC) | |
12001 | plt = htab->elf.iplt; | |
12002 | else | |
12003 | plt = htab->pltlocal; | |
12004 | } | |
1aa42141 AM |
12005 | targ += plt->output_offset + plt->output_section->vma; |
12006 | ||
05d0e962 AM |
12007 | if (stub_entry->stub_type >= ppc_stub_plt_call_notoc) |
12008 | { | |
12009 | off = (8 + stub_entry->stub_offset | |
12010 | + stub_entry->group->stub_sec->output_offset | |
12011 | + stub_entry->group->stub_sec->output_section->vma); | |
12012 | if (stub_entry->stub_type > ppc_stub_plt_call_notoc) | |
12013 | off += 4; | |
12014 | } | |
12015 | else | |
12016 | off = (elf_gp (info->output_bfd) | |
12017 | + htab->sec_info[stub_entry->group->link_sec->id].toc_off); | |
1aa42141 AM |
12018 | |
12019 | if (htab->params->plt_stub_align != 0) | |
12020 | { | |
05d0e962 | 12021 | unsigned pad = plt_stub_pad (htab, stub_entry, targ - off); |
1aa42141 AM |
12022 | |
12023 | stub_entry->group->stub_sec->size += pad; | |
12024 | stub_entry->stub_offset = stub_entry->group->stub_sec->size; | |
05d0e962 AM |
12025 | if (stub_entry->stub_type >= ppc_stub_plt_call_notoc) |
12026 | off += pad; | |
1aa42141 | 12027 | } |
721956f4 | 12028 | |
05d0e962 | 12029 | off = targ - off; |
794e51c0 | 12030 | size = plt_stub_size (htab, stub_entry, off); |
1aa42141 | 12031 | |
df136d64 AM |
12032 | if (stub_entry->stub_type >= ppc_stub_plt_call_notoc) |
12033 | { | |
12034 | /* After the bcl, lr has been modified so we need to emit | |
12035 | .eh_frame info saying the return address is in r12. */ | |
12036 | unsigned int lr_used = stub_entry->stub_offset + 8; | |
12037 | unsigned int delta; | |
12038 | if (stub_entry->stub_type > ppc_stub_plt_call_notoc) | |
12039 | lr_used += 4; | |
12040 | /* The eh_frame info will consist of a DW_CFA_advance_loc or | |
12041 | variant, DW_CFA_register, 65, 12, DW_CFA_advance_loc+2, | |
12042 | DW_CFA_restore_extended 65. */ | |
12043 | delta = lr_used - stub_entry->group->lr_restore; | |
12044 | stub_entry->group->eh_size += eh_advance_size (delta) + 6; | |
12045 | stub_entry->group->lr_restore = lr_used + 8; | |
12046 | } | |
12047 | else | |
176a0d42 | 12048 | { |
05d0e962 AM |
12049 | if (stub_entry->h != NULL |
12050 | && (stub_entry->h == htab->tls_get_addr_fd | |
12051 | || stub_entry->h == htab->tls_get_addr) | |
12052 | && htab->params->tls_get_addr_opt | |
e81b4c93 | 12053 | && stub_entry->stub_type == ppc_stub_plt_call_r2save) |
df136d64 AM |
12054 | { |
12055 | /* After the bctrl, lr has been modified so we need to | |
12056 | emit .eh_frame info saying the return address is | |
12057 | on the stack. In fact we put the EH info specifying | |
12058 | that the return address is on the stack *at* the | |
12059 | call rather than after it, because the EH info for a | |
12060 | call needs to be specified by that point. | |
12061 | See libgcc/unwind-dw2.c execute_cfa_program. */ | |
12062 | unsigned int lr_used = stub_entry->stub_offset + size - 20; | |
12063 | unsigned int delta; | |
12064 | /* The eh_frame info will consist of a DW_CFA_advance_loc | |
12065 | or variant, DW_CFA_offset_externed_sf, 65, -stackoff, | |
12066 | DW_CFA_advance_loc+4, DW_CFA_restore_extended, 65. */ | |
12067 | delta = lr_used - stub_entry->group->lr_restore; | |
12068 | stub_entry->group->eh_size += eh_advance_size (delta) + 6; | |
12069 | stub_entry->group->lr_restore = size - 4; | |
12070 | } | |
05d0e962 AM |
12071 | |
12072 | if (info->emitrelocations) | |
12073 | { | |
12074 | stub_entry->group->stub_sec->reloc_count | |
12075 | += ((PPC_HA (off) != 0) | |
12076 | + (htab->opd_abi | |
12077 | ? 2 + (htab->params->plt_static_chain | |
12078 | && PPC_HA (off + 16) == PPC_HA (off)) | |
12079 | : 1)); | |
12080 | stub_entry->group->stub_sec->flags |= SEC_RELOC; | |
12081 | } | |
176a0d42 | 12082 | } |
721956f4 AM |
12083 | } |
12084 | else | |
12085 | { | |
ad8e1ba5 AM |
12086 | /* ppc_stub_long_branch or ppc_stub_plt_branch, or their r2off |
12087 | variants. */ | |
ac2df442 | 12088 | bfd_vma r2off = 0; |
6911b7dc | 12089 | bfd_vma local_off = 0; |
ac2df442 | 12090 | |
1aa42141 AM |
12091 | targ = (stub_entry->target_value |
12092 | + stub_entry->target_section->output_offset | |
12093 | + stub_entry->target_section->output_section->vma); | |
12094 | off = (stub_entry->stub_offset | |
12095 | + stub_entry->group->stub_sec->output_offset | |
12096 | + stub_entry->group->stub_sec->output_section->vma); | |
721956f4 | 12097 | |
ad8e1ba5 AM |
12098 | /* Reset the stub type from the plt variant in case we now |
12099 | can reach with a shorter stub. */ | |
12100 | if (stub_entry->stub_type >= ppc_stub_plt_branch) | |
12101 | stub_entry->stub_type += ppc_stub_long_branch - ppc_stub_plt_branch; | |
12102 | ||
12103 | size = 4; | |
12104 | if (stub_entry->stub_type == ppc_stub_long_branch_r2off) | |
12105 | { | |
25f53a85 | 12106 | r2off = get_r2off (info, stub_entry); |
a7c49797 | 12107 | if (r2off == (bfd_vma) -1) |
aa374f67 AM |
12108 | { |
12109 | htab->stub_error = TRUE; | |
12110 | return FALSE; | |
12111 | } | |
a7c49797 | 12112 | size = 8; |
ac2df442 | 12113 | if (PPC_HA (r2off) != 0) |
a7c49797 AM |
12114 | size += 4; |
12115 | if (PPC_LO (r2off) != 0) | |
12116 | size += 4; | |
1aa42141 | 12117 | off += size - 4; |
ad8e1ba5 | 12118 | } |
05d0e962 AM |
12119 | else if (stub_entry->stub_type >= ppc_stub_long_branch_notoc) |
12120 | { | |
12121 | size = 20 + size_offset (targ - (off + 8)); | |
12122 | if (stub_entry->stub_type > ppc_stub_long_branch_notoc) | |
12123 | size += 4; | |
12124 | off += size - 4; | |
12125 | } | |
1aa42141 | 12126 | off = targ - off; |
ad8e1ba5 | 12127 | |
05d0e962 | 12128 | if (stub_entry->stub_type >= ppc_stub_long_branch_notoc) |
721956f4 | 12129 | { |
df136d64 AM |
12130 | /* After the bcl, lr has been modified so we need to emit |
12131 | .eh_frame info saying the return address is in r12. */ | |
12132 | unsigned int lr_used = stub_entry->stub_offset + 8; | |
12133 | unsigned int delta; | |
12134 | if (stub_entry->stub_type > ppc_stub_long_branch_notoc) | |
12135 | lr_used += 4; | |
12136 | /* The eh_frame info will consist of a DW_CFA_advance_loc or | |
12137 | variant, DW_CFA_register, 65, 12, DW_CFA_advance_loc+2, | |
12138 | DW_CFA_restore_extended 65. */ | |
12139 | delta = lr_used - stub_entry->group->lr_restore; | |
12140 | stub_entry->group->eh_size += eh_advance_size (delta) + 6; | |
12141 | stub_entry->group->lr_restore = lr_used + 8; | |
12142 | ||
05d0e962 | 12143 | if (off + (1 << 25) >= (bfd_vma) (1 << 26)) |
721956f4 | 12144 | { |
05d0e962 AM |
12145 | stub_entry->stub_type += (ppc_stub_plt_branch_notoc |
12146 | - ppc_stub_long_branch_notoc); | |
12147 | size += 4; | |
721956f4 | 12148 | } |
05d0e962 AM |
12149 | } |
12150 | else | |
12151 | { | |
12152 | local_off = PPC64_LOCAL_ENTRY_OFFSET (stub_entry->other); | |
721956f4 | 12153 | |
05d0e962 AM |
12154 | /* If the branch offset is too big, use a ppc_stub_plt_branch. |
12155 | Do the same for -R objects without function descriptors. */ | |
12156 | if ((stub_entry->stub_type == ppc_stub_long_branch_r2off | |
12157 | && r2off == 0 | |
12158 | && htab->sec_info[stub_entry->target_section->id].toc_off == 0) | |
12159 | || off + (1 << 25) >= (bfd_vma) (1 << 26) - local_off) | |
721956f4 | 12160 | { |
05d0e962 | 12161 | struct ppc_branch_hash_entry *br_entry; |
63bc6f6c | 12162 | |
05d0e962 AM |
12163 | br_entry = ppc_branch_hash_lookup (&htab->branch_hash_table, |
12164 | stub_entry->root.string + 9, | |
12165 | TRUE, FALSE); | |
12166 | if (br_entry == NULL) | |
84f5d08e | 12167 | { |
05d0e962 AM |
12168 | _bfd_error_handler (_("can't build branch stub `%s'"), |
12169 | stub_entry->root.string); | |
12170 | htab->stub_error = TRUE; | |
12171 | return FALSE; | |
84f5d08e | 12172 | } |
ad8e1ba5 | 12173 | |
05d0e962 AM |
12174 | if (br_entry->iter != htab->stub_iteration) |
12175 | { | |
12176 | br_entry->iter = htab->stub_iteration; | |
12177 | br_entry->offset = htab->brlt->size; | |
12178 | htab->brlt->size += 8; | |
12179 | ||
12180 | if (htab->relbrlt != NULL) | |
12181 | htab->relbrlt->size += sizeof (Elf64_External_Rela); | |
12182 | else if (info->emitrelocations) | |
12183 | { | |
12184 | htab->brlt->reloc_count += 1; | |
12185 | htab->brlt->flags |= SEC_RELOC; | |
12186 | } | |
12187 | } | |
ac2df442 | 12188 | |
05d0e962 AM |
12189 | targ = (br_entry->offset |
12190 | + htab->brlt->output_offset | |
12191 | + htab->brlt->output_section->vma); | |
12192 | off = (elf_gp (info->output_bfd) | |
12193 | + htab->sec_info[stub_entry->group->link_sec->id].toc_off); | |
12194 | off = targ - off; | |
176a0d42 | 12195 | |
05d0e962 AM |
12196 | if (info->emitrelocations) |
12197 | { | |
12198 | stub_entry->group->stub_sec->reloc_count | |
12199 | += 1 + (PPC_HA (off) != 0); | |
12200 | stub_entry->group->stub_sec->flags |= SEC_RELOC; | |
12201 | } | |
12202 | ||
12203 | stub_entry->stub_type | |
12204 | += ppc_stub_plt_branch - ppc_stub_long_branch; | |
12205 | if (stub_entry->stub_type != ppc_stub_plt_branch_r2off) | |
12206 | { | |
12207 | size = 12; | |
12208 | if (PPC_HA (off) != 0) | |
12209 | size = 16; | |
12210 | } | |
12211 | else | |
12212 | { | |
12213 | size = 16; | |
12214 | if (PPC_HA (off) != 0) | |
12215 | size += 4; | |
12216 | ||
12217 | if (PPC_HA (r2off) != 0) | |
12218 | size += 4; | |
12219 | if (PPC_LO (r2off) != 0) | |
12220 | size += 4; | |
12221 | } | |
ac2df442 | 12222 | } |
05d0e962 | 12223 | else if (info->emitrelocations) |
ac2df442 | 12224 | { |
05d0e962 AM |
12225 | stub_entry->group->stub_sec->reloc_count += 1; |
12226 | stub_entry->group->stub_sec->flags |= SEC_RELOC; | |
ac2df442 | 12227 | } |
721956f4 AM |
12228 | } |
12229 | } | |
12230 | ||
6f20ed8a | 12231 | stub_entry->group->stub_sec->size += size; |
b34976b6 | 12232 | return TRUE; |
721956f4 AM |
12233 | } |
12234 | ||
12235 | /* Set up various things so that we can make a list of input sections | |
12236 | for each output section included in the link. Returns -1 on error, | |
cedb70c5 | 12237 | 0 when no stubs will be needed, and 1 on success. */ |
721956f4 AM |
12238 | |
12239 | int | |
e7d1c40c | 12240 | ppc64_elf_setup_section_lists (struct bfd_link_info *info) |
721956f4 | 12241 | { |
6f20ed8a | 12242 | unsigned int id; |
721956f4 AM |
12243 | bfd_size_type amt; |
12244 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
12245 | ||
4dfe6ac6 NC |
12246 | if (htab == NULL) |
12247 | return -1; | |
4c52953f | 12248 | |
7cf7fcc8 | 12249 | htab->sec_info_arr_size = _bfd_section_id; |
6f20ed8a AM |
12250 | amt = sizeof (*htab->sec_info) * (htab->sec_info_arr_size); |
12251 | htab->sec_info = bfd_zmalloc (amt); | |
12252 | if (htab->sec_info == NULL) | |
721956f4 AM |
12253 | return -1; |
12254 | ||
3d6f9012 AM |
12255 | /* Set toc_off for com, und, abs and ind sections. */ |
12256 | for (id = 0; id < 3; id++) | |
6f20ed8a | 12257 | htab->sec_info[id].toc_off = TOC_BASE_OFF; |
734b6cf9 | 12258 | |
721956f4 AM |
12259 | return 1; |
12260 | } | |
12261 | ||
927be08e AM |
12262 | /* Set up for first pass at multitoc partitioning. */ |
12263 | ||
12264 | void | |
12265 | ppc64_elf_start_multitoc_partition (struct bfd_link_info *info) | |
12266 | { | |
12267 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
12268 | ||
1c865ab2 | 12269 | htab->toc_curr = ppc64_elf_set_toc (info, info->output_bfd); |
927be08e AM |
12270 | htab->toc_bfd = NULL; |
12271 | htab->toc_first_sec = NULL; | |
12272 | } | |
12273 | ||
e717da7e AM |
12274 | /* The linker repeatedly calls this function for each TOC input section |
12275 | and linker generated GOT section. Group input bfds such that the toc | |
927be08e | 12276 | within a group is less than 64k in size. */ |
ad8e1ba5 | 12277 | |
927be08e | 12278 | bfd_boolean |
4ce794b7 | 12279 | ppc64_elf_next_toc_section (struct bfd_link_info *info, asection *isec) |
ad8e1ba5 AM |
12280 | { |
12281 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
d77c8a4b | 12282 | bfd_vma addr, off, limit; |
ad8e1ba5 | 12283 | |
4dfe6ac6 NC |
12284 | if (htab == NULL) |
12285 | return FALSE; | |
12286 | ||
927be08e | 12287 | if (!htab->second_toc_pass) |
4c52953f | 12288 | { |
927be08e | 12289 | /* Keep track of the first .toc or .got section for this input bfd. */ |
a4fd3de5 AM |
12290 | bfd_boolean new_bfd = htab->toc_bfd != isec->owner; |
12291 | ||
12292 | if (new_bfd) | |
bf102f86 AM |
12293 | { |
12294 | htab->toc_bfd = isec->owner; | |
12295 | htab->toc_first_sec = isec; | |
12296 | } | |
927be08e | 12297 | |
bf102f86 AM |
12298 | addr = isec->output_offset + isec->output_section->vma; |
12299 | off = addr - htab->toc_curr; | |
d77c8a4b AM |
12300 | limit = 0x80008000; |
12301 | if (ppc64_elf_tdata (isec->owner)->has_small_toc_reloc) | |
12302 | limit = 0x10000; | |
12303 | if (off + isec->size > limit) | |
bf102f86 AM |
12304 | { |
12305 | addr = (htab->toc_first_sec->output_offset | |
12306 | + htab->toc_first_sec->output_section->vma); | |
12307 | htab->toc_curr = addr; | |
a27e685f | 12308 | htab->toc_curr &= -TOC_BASE_ALIGN; |
bf102f86 | 12309 | } |
99877b66 | 12310 | |
927be08e AM |
12311 | /* toc_curr is the base address of this toc group. Set elf_gp |
12312 | for the input section to be the offset relative to the | |
12313 | output toc base plus 0x8000. Making the input elf_gp an | |
12314 | offset allows us to move the toc as a whole without | |
12315 | recalculating input elf_gp. */ | |
06bcf541 | 12316 | off = htab->toc_curr - elf_gp (info->output_bfd); |
927be08e AM |
12317 | off += TOC_BASE_OFF; |
12318 | ||
12319 | /* Die if someone uses a linker script that doesn't keep input | |
12320 | file .toc and .got together. */ | |
a4fd3de5 AM |
12321 | if (new_bfd |
12322 | && elf_gp (isec->owner) != 0 | |
927be08e AM |
12323 | && elf_gp (isec->owner) != off) |
12324 | return FALSE; | |
12325 | ||
12326 | elf_gp (isec->owner) = off; | |
12327 | return TRUE; | |
4c52953f | 12328 | } |
927be08e AM |
12329 | |
12330 | /* During the second pass toc_first_sec points to the start of | |
12331 | a toc group, and toc_curr is used to track the old elf_gp. | |
12332 | We use toc_bfd to ensure we only look at each bfd once. */ | |
12333 | if (htab->toc_bfd == isec->owner) | |
12334 | return TRUE; | |
12335 | htab->toc_bfd = isec->owner; | |
12336 | ||
12337 | if (htab->toc_first_sec == NULL | |
12338 | || htab->toc_curr != elf_gp (isec->owner)) | |
12339 | { | |
12340 | htab->toc_curr = elf_gp (isec->owner); | |
12341 | htab->toc_first_sec = isec; | |
12342 | } | |
12343 | addr = (htab->toc_first_sec->output_offset | |
12344 | + htab->toc_first_sec->output_section->vma); | |
06bcf541 | 12345 | off = addr - elf_gp (info->output_bfd) + TOC_BASE_OFF; |
927be08e AM |
12346 | elf_gp (isec->owner) = off; |
12347 | ||
12348 | return TRUE; | |
ad8e1ba5 AM |
12349 | } |
12350 | ||
927be08e AM |
12351 | /* Called via elf_link_hash_traverse to merge GOT entries for global |
12352 | symbol H. */ | |
12353 | ||
12354 | static bfd_boolean | |
12355 | merge_global_got (struct elf_link_hash_entry *h, void *inf ATTRIBUTE_UNUSED) | |
12356 | { | |
12357 | if (h->root.type == bfd_link_hash_indirect) | |
12358 | return TRUE; | |
12359 | ||
927be08e AM |
12360 | merge_got_entries (&h->got.glist); |
12361 | ||
12362 | return TRUE; | |
12363 | } | |
12364 | ||
12365 | /* Called via elf_link_hash_traverse to allocate GOT entries for global | |
12366 | symbol H. */ | |
12367 | ||
12368 | static bfd_boolean | |
12369 | reallocate_got (struct elf_link_hash_entry *h, void *inf) | |
12370 | { | |
12371 | struct got_entry *gent; | |
12372 | ||
12373 | if (h->root.type == bfd_link_hash_indirect) | |
12374 | return TRUE; | |
12375 | ||
927be08e AM |
12376 | for (gent = h->got.glist; gent != NULL; gent = gent->next) |
12377 | if (!gent->is_indirect) | |
12378 | allocate_got (h, (struct bfd_link_info *) inf, gent); | |
12379 | return TRUE; | |
12380 | } | |
12381 | ||
12382 | /* Called on the first multitoc pass after the last call to | |
12383 | ppc64_elf_next_toc_section. This function removes duplicate GOT | |
12384 | entries. */ | |
12385 | ||
12386 | bfd_boolean | |
12387 | ppc64_elf_layout_multitoc (struct bfd_link_info *info) | |
ad8e1ba5 AM |
12388 | { |
12389 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
927be08e AM |
12390 | struct bfd *ibfd, *ibfd2; |
12391 | bfd_boolean done_something; | |
12392 | ||
12393 | htab->multi_toc_needed = htab->toc_curr != elf_gp (info->output_bfd); | |
ad8e1ba5 | 12394 | |
7865406b AM |
12395 | if (!htab->do_multi_toc) |
12396 | return FALSE; | |
12397 | ||
d0fae19d | 12398 | /* Merge global sym got entries within a toc group. */ |
927be08e AM |
12399 | elf_link_hash_traverse (&htab->elf, merge_global_got, info); |
12400 | ||
12401 | /* And tlsld_got. */ | |
c72f2fb2 | 12402 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next) |
927be08e AM |
12403 | { |
12404 | struct got_entry *ent, *ent2; | |
12405 | ||
12406 | if (!is_ppc64_elf (ibfd)) | |
12407 | continue; | |
12408 | ||
12409 | ent = ppc64_tlsld_got (ibfd); | |
12410 | if (!ent->is_indirect | |
12411 | && ent->got.offset != (bfd_vma) -1) | |
12412 | { | |
c72f2fb2 | 12413 | for (ibfd2 = ibfd->link.next; ibfd2 != NULL; ibfd2 = ibfd2->link.next) |
927be08e AM |
12414 | { |
12415 | if (!is_ppc64_elf (ibfd2)) | |
12416 | continue; | |
12417 | ||
12418 | ent2 = ppc64_tlsld_got (ibfd2); | |
12419 | if (!ent2->is_indirect | |
12420 | && ent2->got.offset != (bfd_vma) -1 | |
12421 | && elf_gp (ibfd2) == elf_gp (ibfd)) | |
12422 | { | |
12423 | ent2->is_indirect = TRUE; | |
12424 | ent2->got.ent = ent; | |
12425 | } | |
12426 | } | |
12427 | } | |
12428 | } | |
12429 | ||
12430 | /* Zap sizes of got sections. */ | |
33e44f2e AM |
12431 | htab->elf.irelplt->rawsize = htab->elf.irelplt->size; |
12432 | htab->elf.irelplt->size -= htab->got_reli_size; | |
927be08e AM |
12433 | htab->got_reli_size = 0; |
12434 | ||
c72f2fb2 | 12435 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next) |
927be08e AM |
12436 | { |
12437 | asection *got, *relgot; | |
12438 | ||
12439 | if (!is_ppc64_elf (ibfd)) | |
12440 | continue; | |
12441 | ||
12442 | got = ppc64_elf_tdata (ibfd)->got; | |
12443 | if (got != NULL) | |
12444 | { | |
12445 | got->rawsize = got->size; | |
12446 | got->size = 0; | |
12447 | relgot = ppc64_elf_tdata (ibfd)->relgot; | |
12448 | relgot->rawsize = relgot->size; | |
12449 | relgot->size = 0; | |
12450 | } | |
12451 | } | |
12452 | ||
12453 | /* Now reallocate the got, local syms first. We don't need to | |
12454 | allocate section contents again since we never increase size. */ | |
c72f2fb2 | 12455 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next) |
927be08e AM |
12456 | { |
12457 | struct got_entry **lgot_ents; | |
12458 | struct got_entry **end_lgot_ents; | |
12459 | struct plt_entry **local_plt; | |
12460 | struct plt_entry **end_local_plt; | |
f961d9dd | 12461 | unsigned char *lgot_masks; |
927be08e AM |
12462 | bfd_size_type locsymcount; |
12463 | Elf_Internal_Shdr *symtab_hdr; | |
19e08130 | 12464 | asection *s; |
927be08e AM |
12465 | |
12466 | if (!is_ppc64_elf (ibfd)) | |
12467 | continue; | |
12468 | ||
12469 | lgot_ents = elf_local_got_ents (ibfd); | |
12470 | if (!lgot_ents) | |
12471 | continue; | |
12472 | ||
12473 | symtab_hdr = &elf_symtab_hdr (ibfd); | |
12474 | locsymcount = symtab_hdr->sh_info; | |
12475 | end_lgot_ents = lgot_ents + locsymcount; | |
12476 | local_plt = (struct plt_entry **) end_lgot_ents; | |
12477 | end_local_plt = local_plt + locsymcount; | |
f961d9dd | 12478 | lgot_masks = (unsigned char *) end_local_plt; |
927be08e | 12479 | s = ppc64_elf_tdata (ibfd)->got; |
927be08e AM |
12480 | for (; lgot_ents < end_lgot_ents; ++lgot_ents, ++lgot_masks) |
12481 | { | |
12482 | struct got_entry *ent; | |
12483 | ||
12484 | for (ent = *lgot_ents; ent != NULL; ent = ent->next) | |
d0fae19d | 12485 | { |
19e08130 AM |
12486 | unsigned int ent_size = 8; |
12487 | unsigned int rel_size = sizeof (Elf64_External_Rela); | |
12488 | ||
d0fae19d AM |
12489 | ent->got.offset = s->size; |
12490 | if ((ent->tls_type & *lgot_masks & TLS_GD) != 0) | |
d0fae19d | 12491 | { |
19e08130 AM |
12492 | ent_size *= 2; |
12493 | rel_size *= 2; | |
12494 | } | |
12495 | s->size += ent_size; | |
37da22e5 | 12496 | if ((*lgot_masks & (TLS_TLS | PLT_IFUNC)) == PLT_IFUNC) |
19e08130 | 12497 | { |
33e44f2e | 12498 | htab->elf.irelplt->size += rel_size; |
19e08130 AM |
12499 | htab->got_reli_size += rel_size; |
12500 | } | |
6a3858a6 AM |
12501 | else if (bfd_link_pic (info) |
12502 | && !((ent->tls_type & TLS_TPREL) != 0 | |
12503 | && bfd_link_executable (info))) | |
19e08130 AM |
12504 | { |
12505 | asection *srel = ppc64_elf_tdata (ibfd)->relgot; | |
12506 | srel->size += rel_size; | |
d0fae19d AM |
12507 | } |
12508 | } | |
927be08e AM |
12509 | } |
12510 | } | |
12511 | ||
12512 | elf_link_hash_traverse (&htab->elf, reallocate_got, info); | |
12513 | ||
c72f2fb2 | 12514 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next) |
927be08e AM |
12515 | { |
12516 | struct got_entry *ent; | |
12517 | ||
12518 | if (!is_ppc64_elf (ibfd)) | |
12519 | continue; | |
12520 | ||
12521 | ent = ppc64_tlsld_got (ibfd); | |
12522 | if (!ent->is_indirect | |
12523 | && ent->got.offset != (bfd_vma) -1) | |
12524 | { | |
12525 | asection *s = ppc64_elf_tdata (ibfd)->got; | |
12526 | ent->got.offset = s->size; | |
12527 | s->size += 16; | |
0e1862bb | 12528 | if (bfd_link_pic (info)) |
927be08e AM |
12529 | { |
12530 | asection *srel = ppc64_elf_tdata (ibfd)->relgot; | |
12531 | srel->size += sizeof (Elf64_External_Rela); | |
12532 | } | |
12533 | } | |
12534 | } | |
12535 | ||
33e44f2e | 12536 | done_something = htab->elf.irelplt->rawsize != htab->elf.irelplt->size; |
927be08e | 12537 | if (!done_something) |
c72f2fb2 | 12538 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next) |
927be08e AM |
12539 | { |
12540 | asection *got; | |
12541 | ||
12542 | if (!is_ppc64_elf (ibfd)) | |
12543 | continue; | |
12544 | ||
12545 | got = ppc64_elf_tdata (ibfd)->got; | |
12546 | if (got != NULL) | |
12547 | { | |
12548 | done_something = got->rawsize != got->size; | |
12549 | if (done_something) | |
12550 | break; | |
12551 | } | |
12552 | } | |
12553 | ||
12554 | if (done_something) | |
e7d1c40c | 12555 | (*htab->params->layout_sections_again) (); |
927be08e AM |
12556 | |
12557 | /* Set up for second pass over toc sections to recalculate elf_gp | |
12558 | on input sections. */ | |
12559 | htab->toc_bfd = NULL; | |
12560 | htab->toc_first_sec = NULL; | |
12561 | htab->second_toc_pass = TRUE; | |
12562 | return done_something; | |
12563 | } | |
12564 | ||
12565 | /* Called after second pass of multitoc partitioning. */ | |
12566 | ||
12567 | void | |
12568 | ppc64_elf_finish_multitoc_partition (struct bfd_link_info *info) | |
12569 | { | |
12570 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
12571 | ||
12572 | /* After the second pass, toc_curr tracks the TOC offset used | |
12573 | for code sections below in ppc64_elf_next_input_section. */ | |
3d6f9012 | 12574 | htab->toc_curr = TOC_BASE_OFF; |
ad8e1ba5 AM |
12575 | } |
12576 | ||
9b5ecbd0 AM |
12577 | /* No toc references were found in ISEC. If the code in ISEC makes no |
12578 | calls, then there's no need to use toc adjusting stubs when branching | |
12579 | into ISEC. Actually, indirect calls from ISEC are OK as they will | |
4c52953f AM |
12580 | load r2. Returns -1 on error, 0 for no stub needed, 1 for stub |
12581 | needed, and 2 if a cyclical call-graph was found but no other reason | |
12582 | for a stub was detected. If called from the top level, a return of | |
12583 | 2 means the same as a return of 0. */ | |
9b5ecbd0 AM |
12584 | |
12585 | static int | |
4ce794b7 | 12586 | toc_adjusting_stub_needed (struct bfd_link_info *info, asection *isec) |
9b5ecbd0 | 12587 | { |
9b5ecbd0 | 12588 | int ret; |
70cc837d AM |
12589 | |
12590 | /* Mark this section as checked. */ | |
12591 | isec->call_check_done = 1; | |
9b5ecbd0 | 12592 | |
772119ce AM |
12593 | /* We know none of our code bearing sections will need toc stubs. */ |
12594 | if ((isec->flags & SEC_LINKER_CREATED) != 0) | |
12595 | return 0; | |
12596 | ||
eea6121a | 12597 | if (isec->size == 0) |
082c50f8 AM |
12598 | return 0; |
12599 | ||
4c52953f AM |
12600 | if (isec->output_section == NULL) |
12601 | return 0; | |
12602 | ||
4c52953f | 12603 | ret = 0; |
70cc837d | 12604 | if (isec->reloc_count != 0) |
9b5ecbd0 | 12605 | { |
70cc837d AM |
12606 | Elf_Internal_Rela *relstart, *rel; |
12607 | Elf_Internal_Sym *local_syms; | |
12608 | struct ppc_link_hash_table *htab; | |
2917689a | 12609 | |
70cc837d AM |
12610 | relstart = _bfd_elf_link_read_relocs (isec->owner, isec, NULL, NULL, |
12611 | info->keep_memory); | |
12612 | if (relstart == NULL) | |
12613 | return -1; | |
90aecf7a | 12614 | |
70cc837d AM |
12615 | /* Look for branches to outside of this section. */ |
12616 | local_syms = NULL; | |
12617 | htab = ppc_hash_table (info); | |
12618 | if (htab == NULL) | |
12619 | return -1; | |
4c52953f | 12620 | |
70cc837d | 12621 | for (rel = relstart; rel < relstart + isec->reloc_count; ++rel) |
4c52953f | 12622 | { |
70cc837d AM |
12623 | enum elf_ppc64_reloc_type r_type; |
12624 | unsigned long r_symndx; | |
12625 | struct elf_link_hash_entry *h; | |
12626 | struct ppc_link_hash_entry *eh; | |
12627 | Elf_Internal_Sym *sym; | |
12628 | asection *sym_sec; | |
12629 | struct _opd_sec_data *opd; | |
12630 | bfd_vma sym_value; | |
12631 | bfd_vma dest; | |
12632 | ||
12633 | r_type = ELF64_R_TYPE (rel->r_info); | |
12634 | if (r_type != R_PPC64_REL24 | |
05d0e962 | 12635 | && r_type != R_PPC64_REL24_NOTOC |
70cc837d AM |
12636 | && r_type != R_PPC64_REL14 |
12637 | && r_type != R_PPC64_REL14_BRTAKEN | |
23cedd1d AM |
12638 | && r_type != R_PPC64_REL14_BRNTAKEN |
12639 | && r_type != R_PPC64_PLTCALL) | |
70cc837d | 12640 | continue; |
4c52953f | 12641 | |
70cc837d AM |
12642 | r_symndx = ELF64_R_SYM (rel->r_info); |
12643 | if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, r_symndx, | |
12644 | isec->owner)) | |
4c52953f | 12645 | { |
70cc837d AM |
12646 | ret = -1; |
12647 | break; | |
12648 | } | |
4c52953f | 12649 | |
70cc837d AM |
12650 | /* Calls to dynamic lib functions go through a plt call stub |
12651 | that uses r2. */ | |
12652 | eh = (struct ppc_link_hash_entry *) h; | |
12653 | if (eh != NULL | |
12654 | && (eh->elf.plt.plist != NULL | |
12655 | || (eh->oh != NULL | |
12656 | && ppc_follow_link (eh->oh)->elf.plt.plist != NULL))) | |
12657 | { | |
12658 | ret = 1; | |
12659 | break; | |
4c52953f AM |
12660 | } |
12661 | ||
70cc837d AM |
12662 | if (sym_sec == NULL) |
12663 | /* Ignore other undefined symbols. */ | |
4c52953f | 12664 | continue; |
4c52953f | 12665 | |
70cc837d AM |
12666 | /* Assume branches to other sections not included in the |
12667 | link need stubs too, to cover -R and absolute syms. */ | |
12668 | if (sym_sec->output_section == NULL) | |
12669 | { | |
12670 | ret = 1; | |
12671 | break; | |
12672 | } | |
4c52953f | 12673 | |
70cc837d AM |
12674 | if (h == NULL) |
12675 | sym_value = sym->st_value; | |
12676 | else | |
12677 | { | |
12678 | if (h->root.type != bfd_link_hash_defined | |
12679 | && h->root.type != bfd_link_hash_defweak) | |
12680 | abort (); | |
12681 | sym_value = h->root.u.def.value; | |
12682 | } | |
12683 | sym_value += rel->r_addend; | |
4c52953f | 12684 | |
70cc837d AM |
12685 | /* If this branch reloc uses an opd sym, find the code section. */ |
12686 | opd = get_opd_info (sym_sec); | |
12687 | if (opd != NULL) | |
12688 | { | |
12689 | if (h == NULL && opd->adjust != NULL) | |
12690 | { | |
12691 | long adjust; | |
4c52953f | 12692 | |
92a9c616 | 12693 | adjust = opd->adjust[OPD_NDX (sym_value)]; |
70cc837d AM |
12694 | if (adjust == -1) |
12695 | /* Assume deleted functions won't ever be called. */ | |
12696 | continue; | |
12697 | sym_value += adjust; | |
12698 | } | |
4c52953f | 12699 | |
aef36ac1 AM |
12700 | dest = opd_entry_value (sym_sec, sym_value, |
12701 | &sym_sec, NULL, FALSE); | |
70cc837d AM |
12702 | if (dest == (bfd_vma) -1) |
12703 | continue; | |
12704 | } | |
12705 | else | |
12706 | dest = (sym_value | |
12707 | + sym_sec->output_offset | |
12708 | + sym_sec->output_section->vma); | |
4c52953f | 12709 | |
70cc837d AM |
12710 | /* Ignore branch to self. */ |
12711 | if (sym_sec == isec) | |
12712 | continue; | |
4c52953f | 12713 | |
70cc837d AM |
12714 | /* If the called function uses the toc, we need a stub. */ |
12715 | if (sym_sec->has_toc_reloc | |
12716 | || sym_sec->makes_toc_func_call) | |
4c52953f | 12717 | { |
70cc837d | 12718 | ret = 1; |
4c52953f AM |
12719 | break; |
12720 | } | |
70cc837d AM |
12721 | |
12722 | /* Assume any branch that needs a long branch stub might in fact | |
12723 | need a plt_branch stub. A plt_branch stub uses r2. */ | |
12724 | else if (dest - (isec->output_offset | |
12725 | + isec->output_section->vma | |
6911b7dc AM |
12726 | + rel->r_offset) + (1 << 25) |
12727 | >= (2u << 25) - PPC64_LOCAL_ENTRY_OFFSET (h | |
12728 | ? h->other | |
12729 | : sym->st_other)) | |
4c52953f | 12730 | { |
70cc837d AM |
12731 | ret = 1; |
12732 | break; | |
12733 | } | |
12734 | ||
12735 | /* If calling back to a section in the process of being | |
12736 | tested, we can't say for sure that no toc adjusting stubs | |
12737 | are needed, so don't return zero. */ | |
12738 | else if (sym_sec->call_check_in_progress) | |
12739 | ret = 2; | |
12740 | ||
12741 | /* Branches to another section that itself doesn't have any TOC | |
12742 | references are OK. Recursively call ourselves to check. */ | |
12743 | else if (!sym_sec->call_check_done) | |
12744 | { | |
12745 | int recur; | |
12746 | ||
12747 | /* Mark current section as indeterminate, so that other | |
12748 | sections that call back to current won't be marked as | |
12749 | known. */ | |
12750 | isec->call_check_in_progress = 1; | |
12751 | recur = toc_adjusting_stub_needed (info, sym_sec); | |
12752 | isec->call_check_in_progress = 0; | |
12753 | ||
4c52953f AM |
12754 | if (recur != 0) |
12755 | { | |
70cc837d AM |
12756 | ret = recur; |
12757 | if (recur != 2) | |
12758 | break; | |
4c52953f AM |
12759 | } |
12760 | } | |
4c52953f | 12761 | } |
70cc837d AM |
12762 | |
12763 | if (local_syms != NULL | |
12764 | && (elf_symtab_hdr (isec->owner).contents | |
12765 | != (unsigned char *) local_syms)) | |
12766 | free (local_syms); | |
12767 | if (elf_section_data (isec)->relocs != relstart) | |
12768 | free (relstart); | |
9b5ecbd0 AM |
12769 | } |
12770 | ||
70cc837d AM |
12771 | if ((ret & 1) == 0 |
12772 | && isec->map_head.s != NULL | |
12773 | && (strcmp (isec->output_section->name, ".init") == 0 | |
12774 | || strcmp (isec->output_section->name, ".fini") == 0)) | |
12775 | { | |
12776 | if (isec->map_head.s->has_toc_reloc | |
12777 | || isec->map_head.s->makes_toc_func_call) | |
12778 | ret = 1; | |
12779 | else if (!isec->map_head.s->call_check_done) | |
12780 | { | |
12781 | int recur; | |
12782 | isec->call_check_in_progress = 1; | |
12783 | recur = toc_adjusting_stub_needed (info, isec->map_head.s); | |
12784 | isec->call_check_in_progress = 0; | |
12785 | if (recur != 0) | |
12786 | ret = recur; | |
12787 | } | |
12788 | } | |
12789 | ||
12790 | if (ret == 1) | |
12791 | isec->makes_toc_func_call = 1; | |
4c52953f | 12792 | |
9b5ecbd0 AM |
12793 | return ret; |
12794 | } | |
12795 | ||
721956f4 AM |
12796 | /* The linker repeatedly calls this function for each input section, |
12797 | in the order that input sections are linked into output sections. | |
12798 | Build lists of input sections to determine groupings between which | |
12799 | we may insert linker stubs. */ | |
12800 | ||
9b5ecbd0 | 12801 | bfd_boolean |
4ce794b7 | 12802 | ppc64_elf_next_input_section (struct bfd_link_info *info, asection *isec) |
721956f4 AM |
12803 | { |
12804 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
12805 | ||
4dfe6ac6 NC |
12806 | if (htab == NULL) |
12807 | return FALSE; | |
12808 | ||
734b6cf9 | 12809 | if ((isec->output_section->flags & SEC_CODE) != 0 |
6f20ed8a | 12810 | && isec->output_section->id < htab->sec_info_arr_size) |
721956f4 | 12811 | { |
3d6f9012 AM |
12812 | /* This happens to make the list in reverse order, |
12813 | which is what we want. */ | |
6f20ed8a AM |
12814 | htab->sec_info[isec->id].u.list |
12815 | = htab->sec_info[isec->output_section->id].u.list; | |
12816 | htab->sec_info[isec->output_section->id].u.list = isec; | |
721956f4 | 12817 | } |
ad8e1ba5 | 12818 | |
4c52953f | 12819 | if (htab->multi_toc_needed) |
9b5ecbd0 | 12820 | { |
8b974ba3 AM |
12821 | /* Analyse sections that aren't already flagged as needing a |
12822 | valid toc pointer. Exclude .fixup for the linux kernel. | |
12823 | .fixup contains branches, but only back to the function that | |
12824 | hit an exception. */ | |
12825 | if (!(isec->has_toc_reloc | |
12826 | || (isec->flags & SEC_CODE) == 0 | |
12827 | || strcmp (isec->name, ".fixup") == 0 | |
12828 | || isec->call_check_done)) | |
12829 | { | |
12830 | if (toc_adjusting_stub_needed (info, isec) < 0) | |
6683a28d | 12831 | return FALSE; |
8b974ba3 AM |
12832 | } |
12833 | /* Make all sections use the TOC assigned for this object file. | |
12834 | This will be wrong for pasted sections; We fix that in | |
12835 | check_pasted_section(). */ | |
12836 | if (elf_gp (isec->owner) != 0) | |
12837 | htab->toc_curr = elf_gp (isec->owner); | |
12838 | } | |
12839 | ||
6f20ed8a | 12840 | htab->sec_info[isec->id].toc_off = htab->toc_curr; |
9b5ecbd0 | 12841 | return TRUE; |
721956f4 AM |
12842 | } |
12843 | ||
70cc837d AM |
12844 | /* Check that all .init and .fini sections use the same toc, if they |
12845 | have toc relocs. */ | |
12846 | ||
12847 | static bfd_boolean | |
12848 | check_pasted_section (struct bfd_link_info *info, const char *name) | |
12849 | { | |
12850 | asection *o = bfd_get_section_by_name (info->output_bfd, name); | |
12851 | ||
12852 | if (o != NULL) | |
12853 | { | |
12854 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
12855 | bfd_vma toc_off = 0; | |
12856 | asection *i; | |
12857 | ||
12858 | for (i = o->map_head.s; i != NULL; i = i->map_head.s) | |
12859 | if (i->has_toc_reloc) | |
12860 | { | |
12861 | if (toc_off == 0) | |
6f20ed8a AM |
12862 | toc_off = htab->sec_info[i->id].toc_off; |
12863 | else if (toc_off != htab->sec_info[i->id].toc_off) | |
70cc837d AM |
12864 | return FALSE; |
12865 | } | |
6683a28d AM |
12866 | |
12867 | if (toc_off == 0) | |
12868 | for (i = o->map_head.s; i != NULL; i = i->map_head.s) | |
12869 | if (i->makes_toc_func_call) | |
12870 | { | |
6f20ed8a | 12871 | toc_off = htab->sec_info[i->id].toc_off; |
6683a28d AM |
12872 | break; |
12873 | } | |
12874 | ||
70cc837d AM |
12875 | /* Make sure the whole pasted function uses the same toc offset. */ |
12876 | if (toc_off != 0) | |
12877 | for (i = o->map_head.s; i != NULL; i = i->map_head.s) | |
6f20ed8a | 12878 | htab->sec_info[i->id].toc_off = toc_off; |
70cc837d AM |
12879 | } |
12880 | return TRUE; | |
12881 | } | |
12882 | ||
12883 | bfd_boolean | |
12884 | ppc64_elf_check_init_fini (struct bfd_link_info *info) | |
12885 | { | |
12886 | return (check_pasted_section (info, ".init") | |
12887 | & check_pasted_section (info, ".fini")); | |
12888 | } | |
12889 | ||
721956f4 AM |
12890 | /* See whether we can group stub sections together. Grouping stub |
12891 | sections may result in fewer stubs. More importantly, we need to | |
12892 | put all .init* and .fini* stubs at the beginning of the .init or | |
12893 | .fini output sections respectively, because glibc splits the | |
12894 | _init and _fini functions into multiple parts. Putting a stub in | |
12895 | the middle of a function is not a good idea. */ | |
12896 | ||
6f20ed8a AM |
12897 | static bfd_boolean |
12898 | group_sections (struct bfd_link_info *info, | |
4ce794b7 AM |
12899 | bfd_size_type stub_group_size, |
12900 | bfd_boolean stubs_always_before_branch) | |
721956f4 | 12901 | { |
6f20ed8a AM |
12902 | struct ppc_link_hash_table *htab; |
12903 | asection *osec; | |
7c8fe5c4 AM |
12904 | bfd_boolean suppress_size_errors; |
12905 | ||
6f20ed8a AM |
12906 | htab = ppc_hash_table (info); |
12907 | if (htab == NULL) | |
12908 | return FALSE; | |
12909 | ||
7c8fe5c4 | 12910 | suppress_size_errors = FALSE; |
7c8fe5c4 AM |
12911 | if (stub_group_size == 1) |
12912 | { | |
12913 | /* Default values. */ | |
12914 | if (stubs_always_before_branch) | |
09f92717 | 12915 | stub_group_size = 0x1e00000; |
7c8fe5c4 | 12916 | else |
09f92717 | 12917 | stub_group_size = 0x1c00000; |
7c8fe5c4 AM |
12918 | suppress_size_errors = TRUE; |
12919 | } | |
12920 | ||
6f20ed8a | 12921 | for (osec = info->output_bfd->sections; osec != NULL; osec = osec->next) |
721956f4 | 12922 | { |
6f20ed8a AM |
12923 | asection *tail; |
12924 | ||
12925 | if (osec->id >= htab->sec_info_arr_size) | |
12926 | continue; | |
12927 | ||
12928 | tail = htab->sec_info[osec->id].u.list; | |
734b6cf9 | 12929 | while (tail != NULL) |
721956f4 | 12930 | { |
734b6cf9 AM |
12931 | asection *curr; |
12932 | asection *prev; | |
12933 | bfd_size_type total; | |
12934 | bfd_boolean big_sec; | |
12935 | bfd_vma curr_toc; | |
6f20ed8a | 12936 | struct map_stub *group; |
09f92717 | 12937 | bfd_size_type group_size; |
734b6cf9 AM |
12938 | |
12939 | curr = tail; | |
eea6121a | 12940 | total = tail->size; |
09f92717 AM |
12941 | group_size = (ppc64_elf_section_data (tail) != NULL |
12942 | && ppc64_elf_section_data (tail)->has_14bit_branch | |
12943 | ? stub_group_size >> 10 : stub_group_size); | |
12944 | ||
12945 | big_sec = total > group_size; | |
7c8fe5c4 | 12946 | if (big_sec && !suppress_size_errors) |
695344c0 | 12947 | /* xgettext:c-format */ |
871b3ab2 | 12948 | _bfd_error_handler (_("%pB section %pA exceeds stub group size"), |
4eca0228 | 12949 | tail->owner, tail); |
6f20ed8a | 12950 | curr_toc = htab->sec_info[tail->id].toc_off; |
734b6cf9 | 12951 | |
6f20ed8a | 12952 | while ((prev = htab->sec_info[curr->id].u.list) != NULL |
734b6cf9 | 12953 | && ((total += curr->output_offset - prev->output_offset) |
6bee8834 AM |
12954 | < (ppc64_elf_section_data (prev) != NULL |
12955 | && ppc64_elf_section_data (prev)->has_14bit_branch | |
09f92717 | 12956 | ? (group_size = stub_group_size >> 10) : group_size)) |
6f20ed8a | 12957 | && htab->sec_info[prev->id].toc_off == curr_toc) |
734b6cf9 AM |
12958 | curr = prev; |
12959 | ||
12960 | /* OK, the size from the start of CURR to the end is less | |
09f92717 | 12961 | than group_size and thus can be handled by one stub |
734b6cf9 | 12962 | section. (or the tail section is itself larger than |
09f92717 AM |
12963 | group_size, in which case we may be toast.) We should |
12964 | really be keeping track of the total size of stubs added | |
12965 | here, as stubs contribute to the final output section | |
12966 | size. That's a little tricky, and this way will only | |
12967 | break if stubs added make the total size more than 2^25, | |
12968 | ie. for the default stub_group_size, if stubs total more | |
12969 | than 2097152 bytes, or nearly 75000 plt call stubs. */ | |
6f20ed8a AM |
12970 | group = bfd_alloc (curr->owner, sizeof (*group)); |
12971 | if (group == NULL) | |
12972 | return FALSE; | |
12973 | group->link_sec = curr; | |
12974 | group->stub_sec = NULL; | |
a4b6fadd | 12975 | group->needs_save_res = 0; |
df136d64 AM |
12976 | group->lr_restore = 0; |
12977 | group->eh_size = 0; | |
12978 | group->eh_base = 0; | |
a4b6fadd AM |
12979 | group->next = htab->group; |
12980 | htab->group = group; | |
734b6cf9 | 12981 | do |
721956f4 | 12982 | { |
6f20ed8a | 12983 | prev = htab->sec_info[tail->id].u.list; |
734b6cf9 | 12984 | /* Set up this stub group. */ |
6f20ed8a | 12985 | htab->sec_info[tail->id].u.group = group; |
721956f4 | 12986 | } |
734b6cf9 AM |
12987 | while (tail != curr && (tail = prev) != NULL); |
12988 | ||
09f92717 | 12989 | /* But wait, there's more! Input sections up to group_size |
734b6cf9 AM |
12990 | bytes before the stub section can be handled by it too. |
12991 | Don't do this if we have a really large section after the | |
12992 | stubs, as adding more stubs increases the chance that | |
12993 | branches may not reach into the stub section. */ | |
12994 | if (!stubs_always_before_branch && !big_sec) | |
12995 | { | |
12996 | total = 0; | |
12997 | while (prev != NULL | |
12998 | && ((total += tail->output_offset - prev->output_offset) | |
6bee8834 AM |
12999 | < (ppc64_elf_section_data (prev) != NULL |
13000 | && ppc64_elf_section_data (prev)->has_14bit_branch | |
2cdcc330 AM |
13001 | ? (group_size = stub_group_size >> 10) |
13002 | : group_size)) | |
6f20ed8a | 13003 | && htab->sec_info[prev->id].toc_off == curr_toc) |
734b6cf9 AM |
13004 | { |
13005 | tail = prev; | |
6f20ed8a AM |
13006 | prev = htab->sec_info[tail->id].u.list; |
13007 | htab->sec_info[tail->id].u.group = group; | |
734b6cf9 AM |
13008 | } |
13009 | } | |
13010 | tail = prev; | |
721956f4 AM |
13011 | } |
13012 | } | |
6f20ed8a | 13013 | return TRUE; |
721956f4 AM |
13014 | } |
13015 | ||
58d180e8 AM |
13016 | static const unsigned char glink_eh_frame_cie[] = |
13017 | { | |
13018 | 0, 0, 0, 16, /* length. */ | |
13019 | 0, 0, 0, 0, /* id. */ | |
13020 | 1, /* CIE version. */ | |
13021 | 'z', 'R', 0, /* Augmentation string. */ | |
13022 | 4, /* Code alignment. */ | |
13023 | 0x78, /* Data alignment. */ | |
13024 | 65, /* RA reg. */ | |
13025 | 1, /* Augmentation size. */ | |
13026 | DW_EH_PE_pcrel | DW_EH_PE_sdata4, /* FDE encoding. */ | |
2e0ce1c8 | 13027 | DW_CFA_def_cfa, 1, 0 /* def_cfa: r1 offset 0. */ |
58d180e8 AM |
13028 | }; |
13029 | ||
d969d15f AM |
13030 | /* Stripping output sections is normally done before dynamic section |
13031 | symbols have been allocated. This function is called later, and | |
13032 | handles cases like htab->brlt which is mapped to its own output | |
13033 | section. */ | |
13034 | ||
13035 | static void | |
13036 | maybe_strip_output (struct bfd_link_info *info, asection *isec) | |
13037 | { | |
13038 | if (isec->size == 0 | |
13039 | && isec->output_section->size == 0 | |
53d8967a | 13040 | && !(isec->output_section->flags & SEC_KEEP) |
d969d15f AM |
13041 | && !bfd_section_removed_from_list (info->output_bfd, |
13042 | isec->output_section) | |
13043 | && elf_section_data (isec->output_section)->dynindx == 0) | |
13044 | { | |
13045 | isec->output_section->flags |= SEC_EXCLUDE; | |
13046 | bfd_section_list_remove (info->output_bfd, isec->output_section); | |
13047 | info->output_bfd->section_count--; | |
13048 | } | |
13049 | } | |
13050 | ||
721956f4 AM |
13051 | /* Determine and set the size of the stub section for a final link. |
13052 | ||
13053 | The basic idea here is to examine all the relocations looking for | |
13054 | PC-relative calls to a target that is unreachable with a "bl" | |
13055 | instruction. */ | |
13056 | ||
b34976b6 | 13057 | bfd_boolean |
e7d1c40c | 13058 | ppc64_elf_size_stubs (struct bfd_link_info *info) |
721956f4 AM |
13059 | { |
13060 | bfd_size_type stub_group_size; | |
b34976b6 | 13061 | bfd_boolean stubs_always_before_branch; |
721956f4 AM |
13062 | struct ppc_link_hash_table *htab = ppc_hash_table (info); |
13063 | ||
4dfe6ac6 NC |
13064 | if (htab == NULL) |
13065 | return FALSE; | |
13066 | ||
0e1862bb | 13067 | if (htab->params->plt_thread_safe == -1 && !bfd_link_executable (info)) |
e7d1c40c | 13068 | htab->params->plt_thread_safe = 1; |
b9e5796b | 13069 | if (!htab->opd_abi) |
e7d1c40c AM |
13070 | htab->params->plt_thread_safe = 0; |
13071 | else if (htab->params->plt_thread_safe == -1) | |
794e51c0 | 13072 | { |
e2458743 | 13073 | static const char *const thread_starter[] = |
794e51c0 AM |
13074 | { |
13075 | "pthread_create", | |
13076 | /* libstdc++ */ | |
13077 | "_ZNSt6thread15_M_start_threadESt10shared_ptrINS_10_Impl_baseEE", | |
13078 | /* librt */ | |
13079 | "aio_init", "aio_read", "aio_write", "aio_fsync", "lio_listio", | |
13080 | "mq_notify", "create_timer", | |
13081 | /* libanl */ | |
13082 | "getaddrinfo_a", | |
13083 | /* libgomp */ | |
2300b5a1 | 13084 | "GOMP_parallel", |
794e51c0 | 13085 | "GOMP_parallel_start", |
2300b5a1 | 13086 | "GOMP_parallel_loop_static", |
794e51c0 | 13087 | "GOMP_parallel_loop_static_start", |
2300b5a1 | 13088 | "GOMP_parallel_loop_dynamic", |
794e51c0 | 13089 | "GOMP_parallel_loop_dynamic_start", |
2300b5a1 | 13090 | "GOMP_parallel_loop_guided", |
794e51c0 | 13091 | "GOMP_parallel_loop_guided_start", |
2300b5a1 | 13092 | "GOMP_parallel_loop_runtime", |
794e51c0 | 13093 | "GOMP_parallel_loop_runtime_start", |
2300b5a1 | 13094 | "GOMP_parallel_sections", |
68ffbac6 | 13095 | "GOMP_parallel_sections_start", |
f9dffbf0 AM |
13096 | /* libgo */ |
13097 | "__go_go", | |
794e51c0 AM |
13098 | }; |
13099 | unsigned i; | |
13100 | ||
a4b6fadd | 13101 | for (i = 0; i < ARRAY_SIZE (thread_starter); i++) |
794e51c0 AM |
13102 | { |
13103 | struct elf_link_hash_entry *h; | |
13104 | h = elf_link_hash_lookup (&htab->elf, thread_starter[i], | |
13105 | FALSE, FALSE, TRUE); | |
e7d1c40c AM |
13106 | htab->params->plt_thread_safe = h != NULL && h->ref_regular; |
13107 | if (htab->params->plt_thread_safe) | |
794e51c0 AM |
13108 | break; |
13109 | } | |
13110 | } | |
e7d1c40c AM |
13111 | stubs_always_before_branch = htab->params->group_size < 0; |
13112 | if (htab->params->group_size < 0) | |
13113 | stub_group_size = -htab->params->group_size; | |
721956f4 | 13114 | else |
e7d1c40c | 13115 | stub_group_size = htab->params->group_size; |
721956f4 | 13116 | |
6f20ed8a AM |
13117 | if (!group_sections (info, stub_group_size, stubs_always_before_branch)) |
13118 | return FALSE; | |
721956f4 | 13119 | |
c9301e31 AM |
13120 | #define STUB_SHRINK_ITER 20 |
13121 | /* Loop until no stubs added. After iteration 20 of this loop we may | |
13122 | exit on a stub section shrinking. This is to break out of a | |
13123 | pathological case where adding stubs on one iteration decreases | |
13124 | section gaps (perhaps due to alignment), which then requires | |
13125 | fewer or smaller stubs on the next iteration. */ | |
13126 | ||
721956f4 AM |
13127 | while (1) |
13128 | { | |
13129 | bfd *input_bfd; | |
13130 | unsigned int bfd_indx; | |
a4b6fadd | 13131 | struct map_stub *group; |
721956f4 AM |
13132 | |
13133 | htab->stub_iteration += 1; | |
721956f4 AM |
13134 | |
13135 | for (input_bfd = info->input_bfds, bfd_indx = 0; | |
13136 | input_bfd != NULL; | |
c72f2fb2 | 13137 | input_bfd = input_bfd->link.next, bfd_indx++) |
721956f4 AM |
13138 | { |
13139 | Elf_Internal_Shdr *symtab_hdr; | |
13140 | asection *section; | |
6cdc0ccc | 13141 | Elf_Internal_Sym *local_syms = NULL; |
721956f4 | 13142 | |
0c8d6e5c | 13143 | if (!is_ppc64_elf (input_bfd)) |
67f93c31 AM |
13144 | continue; |
13145 | ||
721956f4 | 13146 | /* We'll need the symbol table in a second. */ |
0ffa91dd | 13147 | symtab_hdr = &elf_symtab_hdr (input_bfd); |
721956f4 AM |
13148 | if (symtab_hdr->sh_info == 0) |
13149 | continue; | |
13150 | ||
721956f4 AM |
13151 | /* Walk over each section attached to the input bfd. */ |
13152 | for (section = input_bfd->sections; | |
13153 | section != NULL; | |
13154 | section = section->next) | |
13155 | { | |
721956f4 | 13156 | Elf_Internal_Rela *internal_relocs, *irelaend, *irela; |
721956f4 AM |
13157 | |
13158 | /* If there aren't any relocs, then there's nothing more | |
13159 | to do. */ | |
13160 | if ((section->flags & SEC_RELOC) == 0 | |
12c0f757 AM |
13161 | || (section->flags & SEC_ALLOC) == 0 |
13162 | || (section->flags & SEC_LOAD) == 0 | |
13163 | || (section->flags & SEC_CODE) == 0 | |
721956f4 AM |
13164 | || section->reloc_count == 0) |
13165 | continue; | |
13166 | ||
13167 | /* If this section is a link-once section that will be | |
13168 | discarded, then don't create any stubs. */ | |
13169 | if (section->output_section == NULL | |
927be08e | 13170 | || section->output_section->owner != info->output_bfd) |
721956f4 AM |
13171 | continue; |
13172 | ||
1e2f5b6e AM |
13173 | /* Get the relocs. */ |
13174 | internal_relocs | |
4ce794b7 | 13175 | = _bfd_elf_link_read_relocs (input_bfd, section, NULL, NULL, |
45d6a902 | 13176 | info->keep_memory); |
721956f4 | 13177 | if (internal_relocs == NULL) |
1e2f5b6e | 13178 | goto error_ret_free_local; |
721956f4 AM |
13179 | |
13180 | /* Now examine each relocation. */ | |
13181 | irela = internal_relocs; | |
13182 | irelaend = irela + section->reloc_count; | |
13183 | for (; irela < irelaend; irela++) | |
13184 | { | |
4ce794b7 AM |
13185 | enum elf_ppc64_reloc_type r_type; |
13186 | unsigned int r_indx; | |
721956f4 AM |
13187 | enum ppc_stub_type stub_type; |
13188 | struct ppc_stub_hash_entry *stub_entry; | |
8387904d | 13189 | asection *sym_sec, *code_sec; |
e054468f | 13190 | bfd_vma sym_value, code_value; |
721956f4 | 13191 | bfd_vma destination; |
6911b7dc | 13192 | unsigned long local_off; |
8843416a | 13193 | bfd_boolean ok_dest; |
721956f4 | 13194 | struct ppc_link_hash_entry *hash; |
8387904d | 13195 | struct ppc_link_hash_entry *fdh; |
411e1bfb AM |
13196 | struct elf_link_hash_entry *h; |
13197 | Elf_Internal_Sym *sym; | |
721956f4 AM |
13198 | char *stub_name; |
13199 | const asection *id_sec; | |
74f0fb50 | 13200 | struct _opd_sec_data *opd; |
e054468f | 13201 | struct plt_entry *plt_ent; |
721956f4 AM |
13202 | |
13203 | r_type = ELF64_R_TYPE (irela->r_info); | |
13204 | r_indx = ELF64_R_SYM (irela->r_info); | |
13205 | ||
4ce794b7 | 13206 | if (r_type >= R_PPC64_max) |
721956f4 AM |
13207 | { |
13208 | bfd_set_error (bfd_error_bad_value); | |
6cdc0ccc | 13209 | goto error_ret_free_internal; |
721956f4 AM |
13210 | } |
13211 | ||
13212 | /* Only look for stubs on branch instructions. */ | |
4ce794b7 | 13213 | if (r_type != R_PPC64_REL24 |
05d0e962 | 13214 | && r_type != R_PPC64_REL24_NOTOC |
4ce794b7 AM |
13215 | && r_type != R_PPC64_REL14 |
13216 | && r_type != R_PPC64_REL14_BRTAKEN | |
13217 | && r_type != R_PPC64_REL14_BRNTAKEN) | |
721956f4 AM |
13218 | continue; |
13219 | ||
13220 | /* Now determine the call target, its name, value, | |
13221 | section. */ | |
411e1bfb AM |
13222 | if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, |
13223 | r_indx, input_bfd)) | |
13224 | goto error_ret_free_internal; | |
13225 | hash = (struct ppc_link_hash_entry *) h; | |
13226 | ||
8843416a | 13227 | ok_dest = FALSE; |
8387904d | 13228 | fdh = NULL; |
7fe2b9a6 | 13229 | sym_value = 0; |
411e1bfb | 13230 | if (hash == NULL) |
721956f4 | 13231 | { |
411e1bfb | 13232 | sym_value = sym->st_value; |
c27b8c2a AM |
13233 | if (sym_sec != NULL |
13234 | && sym_sec->output_section != NULL) | |
13235 | ok_dest = TRUE; | |
721956f4 | 13236 | } |
7fe2b9a6 AM |
13237 | else if (hash->elf.root.type == bfd_link_hash_defined |
13238 | || hash->elf.root.type == bfd_link_hash_defweak) | |
13239 | { | |
13240 | sym_value = hash->elf.root.u.def.value; | |
13241 | if (sym_sec->output_section != NULL) | |
13242 | ok_dest = TRUE; | |
13243 | } | |
13244 | else if (hash->elf.root.type == bfd_link_hash_undefweak | |
13245 | || hash->elf.root.type == bfd_link_hash_undefined) | |
721956f4 | 13246 | { |
99877b66 | 13247 | /* Recognise an old ABI func code entry sym, and |
7fe2b9a6 AM |
13248 | use the func descriptor sym instead if it is |
13249 | defined. */ | |
ceb1f1ef | 13250 | if (hash->elf.root.root.string[0] == '.' |
8c5b4e52 | 13251 | && hash->oh != NULL) |
8387904d | 13252 | { |
8c5b4e52 | 13253 | fdh = ppc_follow_link (hash->oh); |
8387904d AM |
13254 | if (fdh->elf.root.type == bfd_link_hash_defined |
13255 | || fdh->elf.root.type == bfd_link_hash_defweak) | |
13256 | { | |
13257 | sym_sec = fdh->elf.root.u.def.section; | |
13258 | sym_value = fdh->elf.root.u.def.value; | |
13259 | if (sym_sec->output_section != NULL) | |
13260 | ok_dest = TRUE; | |
13261 | } | |
99877b66 AM |
13262 | else |
13263 | fdh = NULL; | |
8387904d | 13264 | } |
7fe2b9a6 AM |
13265 | } |
13266 | else | |
13267 | { | |
13268 | bfd_set_error (bfd_error_bad_value); | |
13269 | goto error_ret_free_internal; | |
721956f4 AM |
13270 | } |
13271 | ||
8843416a | 13272 | destination = 0; |
6911b7dc | 13273 | local_off = 0; |
8843416a AM |
13274 | if (ok_dest) |
13275 | { | |
13276 | sym_value += irela->r_addend; | |
13277 | destination = (sym_value | |
13278 | + sym_sec->output_offset | |
13279 | + sym_sec->output_section->vma); | |
6911b7dc AM |
13280 | local_off = PPC64_LOCAL_ENTRY_OFFSET (hash |
13281 | ? hash->elf.other | |
13282 | : sym->st_other); | |
8843416a AM |
13283 | } |
13284 | ||
8387904d | 13285 | code_sec = sym_sec; |
e054468f | 13286 | code_value = sym_value; |
74f0fb50 AM |
13287 | opd = get_opd_info (sym_sec); |
13288 | if (opd != NULL) | |
8387904d AM |
13289 | { |
13290 | bfd_vma dest; | |
13291 | ||
74f0fb50 | 13292 | if (hash == NULL && opd->adjust != NULL) |
8387904d | 13293 | { |
51aecdc5 | 13294 | long adjust = opd->adjust[OPD_NDX (sym_value)]; |
8387904d AM |
13295 | if (adjust == -1) |
13296 | continue; | |
e054468f | 13297 | code_value += adjust; |
8387904d AM |
13298 | sym_value += adjust; |
13299 | } | |
13300 | dest = opd_entry_value (sym_sec, sym_value, | |
aef36ac1 | 13301 | &code_sec, &code_value, FALSE); |
8387904d AM |
13302 | if (dest != (bfd_vma) -1) |
13303 | { | |
13304 | destination = dest; | |
13305 | if (fdh != NULL) | |
13306 | { | |
13307 | /* Fixup old ABI sym to point at code | |
13308 | entry. */ | |
99877b66 | 13309 | hash->elf.root.type = bfd_link_hash_defweak; |
8387904d | 13310 | hash->elf.root.u.def.section = code_sec; |
e054468f | 13311 | hash->elf.root.u.def.value = code_value; |
8387904d AM |
13312 | } |
13313 | } | |
13314 | } | |
13315 | ||
721956f4 | 13316 | /* Determine what (if any) linker stub is needed. */ |
e054468f | 13317 | plt_ent = NULL; |
721956f4 | 13318 | stub_type = ppc_type_of_stub (section, irela, &hash, |
6911b7dc AM |
13319 | &plt_ent, destination, |
13320 | local_off); | |
ad8e1ba5 | 13321 | |
05d0e962 AM |
13322 | if (r_type == R_PPC64_REL24_NOTOC) |
13323 | { | |
13324 | if (stub_type == ppc_stub_plt_call) | |
13325 | stub_type = ppc_stub_plt_call_notoc; | |
13326 | else if (stub_type == ppc_stub_long_branch | |
13327 | || (code_sec != NULL | |
13328 | && code_sec->output_section != NULL | |
13329 | && (((hash ? hash->elf.other : sym->st_other) | |
13330 | & STO_PPC64_LOCAL_MASK) | |
13331 | != 1 << STO_PPC64_LOCAL_BIT))) | |
13332 | stub_type = ppc_stub_long_branch_notoc; | |
13333 | } | |
13334 | else if (stub_type != ppc_stub_plt_call) | |
ad8e1ba5 AM |
13335 | { |
13336 | /* Check whether we need a TOC adjusting stub. | |
13337 | Since the linker pastes together pieces from | |
13338 | different object files when creating the | |
13339 | _init and _fini functions, it may be that a | |
13340 | call to what looks like a local sym is in | |
13341 | fact a call needing a TOC adjustment. */ | |
33cb30a1 AM |
13342 | if ((code_sec != NULL |
13343 | && code_sec->output_section != NULL | |
13344 | && (htab->sec_info[code_sec->id].toc_off | |
13345 | != htab->sec_info[section->id].toc_off) | |
13346 | && (code_sec->has_toc_reloc | |
13347 | || code_sec->makes_toc_func_call)) | |
13348 | || (((hash ? hash->elf.other : sym->st_other) | |
13349 | & STO_PPC64_LOCAL_MASK) | |
13350 | == 1 << STO_PPC64_LOCAL_BIT)) | |
ad8e1ba5 AM |
13351 | stub_type = ppc_stub_long_branch_r2off; |
13352 | } | |
13353 | ||
721956f4 AM |
13354 | if (stub_type == ppc_stub_none) |
13355 | continue; | |
13356 | ||
411e1bfb AM |
13357 | /* __tls_get_addr calls might be eliminated. */ |
13358 | if (stub_type != ppc_stub_plt_call | |
05d0e962 | 13359 | && stub_type != ppc_stub_plt_call_notoc |
411e1bfb | 13360 | && hash != NULL |
8387904d AM |
13361 | && (hash == htab->tls_get_addr |
13362 | || hash == htab->tls_get_addr_fd) | |
411e1bfb AM |
13363 | && section->has_tls_reloc |
13364 | && irela != internal_relocs) | |
13365 | { | |
13366 | /* Get tls info. */ | |
f961d9dd | 13367 | unsigned char *tls_mask; |
411e1bfb | 13368 | |
3a71aa26 | 13369 | if (!get_tls_mask (&tls_mask, NULL, NULL, &local_syms, |
411e1bfb AM |
13370 | irela - 1, input_bfd)) |
13371 | goto error_ret_free_internal; | |
37da22e5 | 13372 | if ((*tls_mask & TLS_TLS) != 0) |
411e1bfb AM |
13373 | continue; |
13374 | } | |
13375 | ||
f378ab09 | 13376 | if (stub_type == ppc_stub_plt_call) |
794e51c0 | 13377 | { |
6e1816be AM |
13378 | if (!htab->opd_abi |
13379 | && htab->params->plt_localentry0 != 0 | |
13380 | && is_elfv2_localentry0 (&hash->elf)) | |
13381 | htab->has_plt_localentry0 = 1; | |
13382 | else if (irela + 1 < irelaend | |
13383 | && irela[1].r_offset == irela->r_offset + 4 | |
13384 | && (ELF64_R_TYPE (irela[1].r_info) | |
13385 | == R_PPC64_TOCSAVE)) | |
f378ab09 AM |
13386 | { |
13387 | if (!tocsave_find (htab, INSERT, | |
13388 | &local_syms, irela + 1, input_bfd)) | |
13389 | goto error_ret_free_internal; | |
13390 | } | |
f378ab09 AM |
13391 | else |
13392 | stub_type = ppc_stub_plt_call_r2save; | |
794e51c0 | 13393 | } |
3b421ab3 | 13394 | |
721956f4 | 13395 | /* Support for grouping stub sections. */ |
6f20ed8a | 13396 | id_sec = htab->sec_info[section->id].u.group->link_sec; |
721956f4 AM |
13397 | |
13398 | /* Get the name of this stub. */ | |
13399 | stub_name = ppc_stub_name (id_sec, sym_sec, hash, irela); | |
13400 | if (!stub_name) | |
13401 | goto error_ret_free_internal; | |
13402 | ||
13403 | stub_entry = ppc_stub_hash_lookup (&htab->stub_hash_table, | |
b34976b6 | 13404 | stub_name, FALSE, FALSE); |
721956f4 AM |
13405 | if (stub_entry != NULL) |
13406 | { | |
05d0e962 AM |
13407 | enum ppc_stub_type old_type; |
13408 | /* A stub has already been created, but it may | |
13409 | not be the required type. We shouldn't be | |
13410 | transitioning from plt_call to long_branch | |
13411 | stubs or vice versa, but we might be | |
13412 | upgrading from plt_call to plt_call_r2save or | |
13413 | from long_branch to long_branch_r2off. */ | |
721956f4 | 13414 | free (stub_name); |
05d0e962 AM |
13415 | old_type = stub_entry->stub_type; |
13416 | switch (old_type) | |
13417 | { | |
13418 | default: | |
13419 | abort (); | |
13420 | ||
13421 | case ppc_stub_save_res: | |
13422 | continue; | |
13423 | ||
13424 | case ppc_stub_plt_call: | |
13425 | case ppc_stub_plt_call_r2save: | |
13426 | case ppc_stub_plt_call_notoc: | |
13427 | case ppc_stub_plt_call_both: | |
13428 | if (stub_type == ppc_stub_plt_call) | |
13429 | continue; | |
13430 | else if (stub_type == ppc_stub_plt_call_r2save) | |
13431 | { | |
13432 | if (old_type == ppc_stub_plt_call_notoc) | |
13433 | stub_type = ppc_stub_plt_call_both; | |
13434 | } | |
13435 | else if (stub_type == ppc_stub_plt_call_notoc) | |
13436 | { | |
13437 | if (old_type == ppc_stub_plt_call_r2save) | |
13438 | stub_type = ppc_stub_plt_call_both; | |
13439 | } | |
13440 | else | |
13441 | abort (); | |
13442 | break; | |
13443 | ||
13444 | case ppc_stub_plt_branch: | |
13445 | case ppc_stub_plt_branch_r2off: | |
13446 | case ppc_stub_plt_branch_notoc: | |
13447 | case ppc_stub_plt_branch_both: | |
13448 | old_type += (ppc_stub_long_branch | |
13449 | - ppc_stub_plt_branch); | |
13450 | /* Fall through. */ | |
13451 | case ppc_stub_long_branch: | |
13452 | case ppc_stub_long_branch_r2off: | |
13453 | case ppc_stub_long_branch_notoc: | |
13454 | case ppc_stub_long_branch_both: | |
13455 | if (stub_type == ppc_stub_long_branch) | |
13456 | continue; | |
13457 | else if (stub_type == ppc_stub_long_branch_r2off) | |
13458 | { | |
13459 | if (old_type == ppc_stub_long_branch_notoc) | |
13460 | stub_type = ppc_stub_long_branch_both; | |
13461 | } | |
13462 | else if (stub_type == ppc_stub_long_branch_notoc) | |
13463 | { | |
13464 | if (old_type == ppc_stub_long_branch_r2off) | |
13465 | stub_type = ppc_stub_long_branch_both; | |
13466 | } | |
13467 | else | |
13468 | abort (); | |
13469 | break; | |
13470 | } | |
13471 | if (old_type < stub_type) | |
794e51c0 | 13472 | stub_entry->stub_type = stub_type; |
721956f4 AM |
13473 | continue; |
13474 | } | |
13475 | ||
25f53a85 | 13476 | stub_entry = ppc_add_stub (stub_name, section, info); |
721956f4 AM |
13477 | if (stub_entry == NULL) |
13478 | { | |
13479 | free (stub_name); | |
6cdc0ccc AM |
13480 | error_ret_free_internal: |
13481 | if (elf_section_data (section)->relocs == NULL) | |
13482 | free (internal_relocs); | |
13483 | error_ret_free_local: | |
13484 | if (local_syms != NULL | |
13485 | && (symtab_hdr->contents | |
13486 | != (unsigned char *) local_syms)) | |
13487 | free (local_syms); | |
b34976b6 | 13488 | return FALSE; |
721956f4 AM |
13489 | } |
13490 | ||
ad8e1ba5 | 13491 | stub_entry->stub_type = stub_type; |
05d0e962 AM |
13492 | if (stub_type >= ppc_stub_plt_call |
13493 | && stub_type <= ppc_stub_plt_call_both) | |
e054468f | 13494 | { |
05d0e962 AM |
13495 | stub_entry->target_value = sym_value; |
13496 | stub_entry->target_section = sym_sec; | |
e054468f AM |
13497 | } |
13498 | else | |
13499 | { | |
05d0e962 AM |
13500 | stub_entry->target_value = code_value; |
13501 | stub_entry->target_section = code_sec; | |
e054468f | 13502 | } |
721956f4 | 13503 | stub_entry->h = hash; |
e054468f | 13504 | stub_entry->plt_ent = plt_ent; |
2d7ad24e AM |
13505 | stub_entry->symtype |
13506 | = hash ? hash->elf.type : ELF_ST_TYPE (sym->st_info); | |
6911b7dc | 13507 | stub_entry->other = hash ? hash->elf.other : sym->st_other; |
ee75fd95 AM |
13508 | |
13509 | if (stub_entry->h != NULL) | |
13510 | htab->stub_globals += 1; | |
721956f4 AM |
13511 | } |
13512 | ||
13513 | /* We're done with the internal relocs, free them. */ | |
6cdc0ccc | 13514 | if (elf_section_data (section)->relocs != internal_relocs) |
1e2f5b6e | 13515 | free (internal_relocs); |
721956f4 | 13516 | } |
6cdc0ccc AM |
13517 | |
13518 | if (local_syms != NULL | |
13519 | && symtab_hdr->contents != (unsigned char *) local_syms) | |
13520 | { | |
13521 | if (!info->keep_memory) | |
13522 | free (local_syms); | |
13523 | else | |
13524 | symtab_hdr->contents = (unsigned char *) local_syms; | |
13525 | } | |
721956f4 AM |
13526 | } |
13527 | ||
5c3dead3 | 13528 | /* We may have added some stubs. Find out the new size of the |
721956f4 | 13529 | stub sections. */ |
d4aaa2a0 | 13530 | for (group = htab->group; group != NULL; group = group->next) |
df136d64 AM |
13531 | { |
13532 | group->lr_restore = 0; | |
13533 | group->eh_size = 0; | |
13534 | if (group->stub_sec != NULL) | |
13535 | { | |
13536 | asection *stub_sec = group->stub_sec; | |
13537 | ||
13538 | if (htab->stub_iteration <= STUB_SHRINK_ITER | |
13539 | || stub_sec->rawsize < stub_sec->size) | |
13540 | /* Past STUB_SHRINK_ITER, rawsize is the max size seen. */ | |
13541 | stub_sec->rawsize = stub_sec->size; | |
13542 | stub_sec->size = 0; | |
13543 | stub_sec->reloc_count = 0; | |
13544 | stub_sec->flags &= ~SEC_RELOC; | |
13545 | } | |
13546 | } | |
eea6121a | 13547 | |
ba21f564 AM |
13548 | if (htab->stub_iteration <= STUB_SHRINK_ITER |
13549 | || htab->brlt->rawsize < htab->brlt->size) | |
13550 | htab->brlt->rawsize = htab->brlt->size; | |
eea6121a | 13551 | htab->brlt->size = 0; |
84f5d08e AM |
13552 | htab->brlt->reloc_count = 0; |
13553 | htab->brlt->flags &= ~SEC_RELOC; | |
ee75fd95 | 13554 | if (htab->relbrlt != NULL) |
eea6121a | 13555 | htab->relbrlt->size = 0; |
721956f4 | 13556 | |
63bc6f6c | 13557 | bfd_hash_traverse (&htab->stub_hash_table, ppc_size_one_stub, info); |
721956f4 | 13558 | |
a4b6fadd AM |
13559 | for (group = htab->group; group != NULL; group = group->next) |
13560 | if (group->needs_save_res) | |
13561 | group->stub_sec->size += htab->sfpr->size; | |
13562 | ||
176a0d42 AM |
13563 | if (info->emitrelocations |
13564 | && htab->glink != NULL && htab->glink->size != 0) | |
13565 | { | |
13566 | htab->glink->reloc_count = 1; | |
13567 | htab->glink->flags |= SEC_RELOC; | |
13568 | } | |
13569 | ||
58d180e8 AM |
13570 | if (htab->glink_eh_frame != NULL |
13571 | && !bfd_is_abs_section (htab->glink_eh_frame->output_section) | |
2d0d44d5 | 13572 | && htab->glink_eh_frame->output_section->size > 8) |
58d180e8 | 13573 | { |
2e0ce1c8 | 13574 | size_t size = 0, align = 4; |
58d180e8 | 13575 | |
d4aaa2a0 | 13576 | for (group = htab->group; group != NULL; group = group->next) |
df136d64 AM |
13577 | if (group->eh_size != 0) |
13578 | size += (group->eh_size + 17 + align - 1) & -align; | |
58d180e8 | 13579 | if (htab->glink != NULL && htab->glink->size != 0) |
2e0ce1c8 | 13580 | size += (24 + align - 1) & -align; |
58d180e8 | 13581 | if (size != 0) |
2e0ce1c8 AM |
13582 | size += (sizeof (glink_eh_frame_cie) + align - 1) & -align; |
13583 | align = 1ul << htab->glink_eh_frame->output_section->alignment_power; | |
13584 | size = (size + align - 1) & -align; | |
58d180e8 AM |
13585 | htab->glink_eh_frame->rawsize = htab->glink_eh_frame->size; |
13586 | htab->glink_eh_frame->size = size; | |
13587 | } | |
13588 | ||
e7d1c40c | 13589 | if (htab->params->plt_stub_align != 0) |
d4aaa2a0 AM |
13590 | for (group = htab->group; group != NULL; group = group->next) |
13591 | if (group->stub_sec != NULL) | |
691d2e9a AM |
13592 | { |
13593 | int align = abs (htab->params->plt_stub_align); | |
13594 | group->stub_sec->size | |
13595 | = (group->stub_sec->size + (1 << align) - 1) & -(1 << align); | |
13596 | } | |
d4aaa2a0 AM |
13597 | |
13598 | for (group = htab->group; group != NULL; group = group->next) | |
13599 | if (group->stub_sec != NULL | |
13600 | && group->stub_sec->rawsize != group->stub_sec->size | |
c9301e31 | 13601 | && (htab->stub_iteration <= STUB_SHRINK_ITER |
d4aaa2a0 | 13602 | || group->stub_sec->rawsize < group->stub_sec->size)) |
5c3dead3 AM |
13603 | break; |
13604 | ||
d4aaa2a0 | 13605 | if (group == NULL |
ba21f564 AM |
13606 | && (htab->brlt->rawsize == htab->brlt->size |
13607 | || (htab->stub_iteration > STUB_SHRINK_ITER | |
13608 | && htab->brlt->rawsize > htab->brlt->size)) | |
58d180e8 AM |
13609 | && (htab->glink_eh_frame == NULL |
13610 | || htab->glink_eh_frame->rawsize == htab->glink_eh_frame->size)) | |
5c3dead3 AM |
13611 | break; |
13612 | ||
721956f4 | 13613 | /* Ask the linker to do its stuff. */ |
e7d1c40c | 13614 | (*htab->params->layout_sections_again) (); |
721956f4 AM |
13615 | } |
13616 | ||
da44f4e5 AM |
13617 | if (htab->glink_eh_frame != NULL |
13618 | && htab->glink_eh_frame->size != 0) | |
13619 | { | |
13620 | bfd_vma val; | |
13621 | bfd_byte *p, *last_fde; | |
13622 | size_t last_fde_len, size, align, pad; | |
d4aaa2a0 | 13623 | struct map_stub *group; |
da44f4e5 | 13624 | |
df136d64 AM |
13625 | /* It is necessary to at least have a rough outline of the |
13626 | linker generated CIEs and FDEs written before | |
13627 | bfd_elf_discard_info is run, in order for these FDEs to be | |
13628 | indexed in .eh_frame_hdr. */ | |
da44f4e5 AM |
13629 | p = bfd_zalloc (htab->glink_eh_frame->owner, htab->glink_eh_frame->size); |
13630 | if (p == NULL) | |
13631 | return FALSE; | |
13632 | htab->glink_eh_frame->contents = p; | |
13633 | last_fde = p; | |
2e0ce1c8 | 13634 | align = 4; |
da44f4e5 AM |
13635 | |
13636 | memcpy (p, glink_eh_frame_cie, sizeof (glink_eh_frame_cie)); | |
13637 | /* CIE length (rewrite in case little-endian). */ | |
2e0ce1c8 | 13638 | last_fde_len = ((sizeof (glink_eh_frame_cie) + align - 1) & -align) - 4; |
da44f4e5 | 13639 | bfd_put_32 (htab->elf.dynobj, last_fde_len, p); |
2e0ce1c8 | 13640 | p += last_fde_len + 4; |
da44f4e5 | 13641 | |
d4aaa2a0 | 13642 | for (group = htab->group; group != NULL; group = group->next) |
df136d64 | 13643 | if (group->eh_size != 0) |
da44f4e5 | 13644 | { |
df136d64 | 13645 | group->eh_base = p - htab->glink_eh_frame->contents; |
da44f4e5 | 13646 | last_fde = p; |
df136d64 | 13647 | last_fde_len = ((group->eh_size + 17 + align - 1) & -align) - 4; |
da44f4e5 | 13648 | /* FDE length. */ |
2e0ce1c8 | 13649 | bfd_put_32 (htab->elf.dynobj, last_fde_len, p); |
da44f4e5 AM |
13650 | p += 4; |
13651 | /* CIE pointer. */ | |
13652 | val = p - htab->glink_eh_frame->contents; | |
13653 | bfd_put_32 (htab->elf.dynobj, val, p); | |
13654 | p += 4; | |
13655 | /* Offset to stub section, written later. */ | |
13656 | p += 4; | |
13657 | /* stub section size. */ | |
d4aaa2a0 | 13658 | bfd_put_32 (htab->elf.dynobj, group->stub_sec->size, p); |
da44f4e5 AM |
13659 | p += 4; |
13660 | /* Augmentation. */ | |
13661 | p += 1; | |
df136d64 AM |
13662 | /* Make sure we don't have all nops. This is enough for |
13663 | elf-eh-frame.c to detect the last non-nop opcode. */ | |
13664 | p[group->eh_size - 1] = DW_CFA_advance_loc + 1; | |
d4aaa2a0 | 13665 | p = last_fde + last_fde_len + 4; |
da44f4e5 AM |
13666 | } |
13667 | if (htab->glink != NULL && htab->glink->size != 0) | |
13668 | { | |
13669 | last_fde = p; | |
2e0ce1c8 | 13670 | last_fde_len = ((24 + align - 1) & -align) - 4; |
da44f4e5 | 13671 | /* FDE length. */ |
2e0ce1c8 | 13672 | bfd_put_32 (htab->elf.dynobj, last_fde_len, p); |
da44f4e5 AM |
13673 | p += 4; |
13674 | /* CIE pointer. */ | |
13675 | val = p - htab->glink_eh_frame->contents; | |
13676 | bfd_put_32 (htab->elf.dynobj, val, p); | |
13677 | p += 4; | |
13678 | /* Offset to .glink, written later. */ | |
13679 | p += 4; | |
13680 | /* .glink size. */ | |
13681 | bfd_put_32 (htab->elf.dynobj, htab->glink->size - 8, p); | |
13682 | p += 4; | |
13683 | /* Augmentation. */ | |
13684 | p += 1; | |
13685 | ||
13686 | *p++ = DW_CFA_advance_loc + 1; | |
13687 | *p++ = DW_CFA_register; | |
13688 | *p++ = 65; | |
9f08fa5c | 13689 | *p++ = htab->opd_abi ? 12 : 0; |
15a3a14f | 13690 | *p++ = DW_CFA_advance_loc + (htab->opd_abi ? 5 : 7); |
da44f4e5 AM |
13691 | *p++ = DW_CFA_restore_extended; |
13692 | *p++ = 65; | |
2e0ce1c8 | 13693 | p += ((24 + align - 1) & -align) - 24; |
da44f4e5 AM |
13694 | } |
13695 | /* Subsume any padding into the last FDE if user .eh_frame | |
13696 | sections are aligned more than glink_eh_frame. Otherwise any | |
13697 | zero padding will be seen as a terminator. */ | |
2e0ce1c8 | 13698 | align = 1ul << htab->glink_eh_frame->output_section->alignment_power; |
da44f4e5 | 13699 | size = p - htab->glink_eh_frame->contents; |
2e0ce1c8 | 13700 | pad = ((size + align - 1) & -align) - size; |
da44f4e5 AM |
13701 | htab->glink_eh_frame->size = size + pad; |
13702 | bfd_put_32 (htab->elf.dynobj, last_fde_len + pad, last_fde); | |
13703 | } | |
13704 | ||
d969d15f AM |
13705 | maybe_strip_output (info, htab->brlt); |
13706 | if (htab->glink_eh_frame != NULL) | |
13707 | maybe_strip_output (info, htab->glink_eh_frame); | |
721956f4 | 13708 | |
b34976b6 | 13709 | return TRUE; |
721956f4 AM |
13710 | } |
13711 | ||
13712 | /* Called after we have determined section placement. If sections | |
805fc799 | 13713 | move, we'll be called again. Provide a value for TOCstart. */ |
721956f4 | 13714 | |
805fc799 | 13715 | bfd_vma |
1c865ab2 | 13716 | ppc64_elf_set_toc (struct bfd_link_info *info, bfd *obfd) |
721956f4 | 13717 | { |
805fc799 | 13718 | asection *s; |
a27e685f | 13719 | bfd_vma TOCstart, adjust; |
721956f4 | 13720 | |
43417696 AM |
13721 | if (info != NULL) |
13722 | { | |
13723 | struct elf_link_hash_entry *h; | |
13724 | struct elf_link_hash_table *htab = elf_hash_table (info); | |
13725 | ||
13726 | if (is_elf_hash_table (htab) | |
13727 | && htab->hgot != NULL) | |
13728 | h = htab->hgot; | |
13729 | else | |
13730 | { | |
13731 | h = elf_link_hash_lookup (htab, ".TOC.", FALSE, FALSE, TRUE); | |
13732 | if (is_elf_hash_table (htab)) | |
13733 | htab->hgot = h; | |
13734 | } | |
13735 | if (h != NULL | |
13736 | && h->root.type == bfd_link_hash_defined | |
13737 | && !h->root.linker_def | |
13738 | && (!is_elf_hash_table (htab) | |
13739 | || h->def_regular)) | |
13740 | { | |
13741 | TOCstart = (h->root.u.def.value - TOC_BASE_OFF | |
13742 | + h->root.u.def.section->output_offset | |
13743 | + h->root.u.def.section->output_section->vma); | |
13744 | _bfd_set_gp_value (obfd, TOCstart); | |
13745 | return TOCstart; | |
13746 | } | |
13747 | } | |
13748 | ||
805fc799 AM |
13749 | /* The TOC consists of sections .got, .toc, .tocbss, .plt in that |
13750 | order. The TOC starts where the first of these sections starts. */ | |
13751 | s = bfd_get_section_by_name (obfd, ".got"); | |
e054468f | 13752 | if (s == NULL || (s->flags & SEC_EXCLUDE) != 0) |
805fc799 | 13753 | s = bfd_get_section_by_name (obfd, ".toc"); |
e054468f | 13754 | if (s == NULL || (s->flags & SEC_EXCLUDE) != 0) |
805fc799 | 13755 | s = bfd_get_section_by_name (obfd, ".tocbss"); |
e054468f | 13756 | if (s == NULL || (s->flags & SEC_EXCLUDE) != 0) |
805fc799 | 13757 | s = bfd_get_section_by_name (obfd, ".plt"); |
e054468f | 13758 | if (s == NULL || (s->flags & SEC_EXCLUDE) != 0) |
805fc799 AM |
13759 | { |
13760 | /* This may happen for | |
13761 | o references to TOC base (SYM@toc / TOC[tc0]) without a | |
13762 | .toc directive | |
13763 | o bad linker script | |
13764 | o --gc-sections and empty TOC sections | |
13765 | ||
13766 | FIXME: Warn user? */ | |
13767 | ||
13768 | /* Look for a likely section. We probably won't even be | |
13769 | using TOCstart. */ | |
13770 | for (s = obfd->sections; s != NULL; s = s->next) | |
e054468f AM |
13771 | if ((s->flags & (SEC_ALLOC | SEC_SMALL_DATA | SEC_READONLY |
13772 | | SEC_EXCLUDE)) | |
805fc799 AM |
13773 | == (SEC_ALLOC | SEC_SMALL_DATA)) |
13774 | break; | |
721956f4 | 13775 | if (s == NULL) |
805fc799 | 13776 | for (s = obfd->sections; s != NULL; s = s->next) |
e054468f | 13777 | if ((s->flags & (SEC_ALLOC | SEC_SMALL_DATA | SEC_EXCLUDE)) |
805fc799 AM |
13778 | == (SEC_ALLOC | SEC_SMALL_DATA)) |
13779 | break; | |
721956f4 | 13780 | if (s == NULL) |
805fc799 | 13781 | for (s = obfd->sections; s != NULL; s = s->next) |
e054468f AM |
13782 | if ((s->flags & (SEC_ALLOC | SEC_READONLY | SEC_EXCLUDE)) |
13783 | == SEC_ALLOC) | |
805fc799 | 13784 | break; |
721956f4 | 13785 | if (s == NULL) |
805fc799 | 13786 | for (s = obfd->sections; s != NULL; s = s->next) |
e054468f | 13787 | if ((s->flags & (SEC_ALLOC | SEC_EXCLUDE)) == SEC_ALLOC) |
805fc799 AM |
13788 | break; |
13789 | } | |
721956f4 | 13790 | |
805fc799 AM |
13791 | TOCstart = 0; |
13792 | if (s != NULL) | |
13793 | TOCstart = s->output_section->vma + s->output_offset; | |
721956f4 | 13794 | |
a27e685f AM |
13795 | /* Force alignment. */ |
13796 | adjust = TOCstart & (TOC_BASE_ALIGN - 1); | |
13797 | TOCstart -= adjust; | |
1c865ab2 AM |
13798 | _bfd_set_gp_value (obfd, TOCstart); |
13799 | ||
810d4e75 | 13800 | if (info != NULL && s != NULL) |
1c865ab2 AM |
13801 | { |
13802 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
13803 | ||
810d4e75 AM |
13804 | if (htab != NULL) |
13805 | { | |
13806 | if (htab->elf.hgot != NULL) | |
13807 | { | |
a27e685f | 13808 | htab->elf.hgot->root.u.def.value = TOC_BASE_OFF - adjust; |
810d4e75 AM |
13809 | htab->elf.hgot->root.u.def.section = s; |
13810 | } | |
13811 | } | |
13812 | else | |
1c865ab2 | 13813 | { |
810d4e75 AM |
13814 | struct bfd_link_hash_entry *bh = NULL; |
13815 | _bfd_generic_link_add_one_symbol (info, obfd, ".TOC.", BSF_GLOBAL, | |
a27e685f AM |
13816 | s, TOC_BASE_OFF - adjust, |
13817 | NULL, FALSE, FALSE, &bh); | |
1c865ab2 AM |
13818 | } |
13819 | } | |
805fc799 | 13820 | return TOCstart; |
721956f4 AM |
13821 | } |
13822 | ||
a345bc8d | 13823 | /* Called via elf_link_hash_traverse from ppc64_elf_build_stubs to |
49c09209 | 13824 | write out any global entry stubs, and PLT relocations. */ |
a345bc8d AM |
13825 | |
13826 | static bfd_boolean | |
49c09209 | 13827 | build_global_entry_stubs_and_plt (struct elf_link_hash_entry *h, void *inf) |
a345bc8d AM |
13828 | { |
13829 | struct bfd_link_info *info; | |
13830 | struct ppc_link_hash_table *htab; | |
49c09209 | 13831 | struct plt_entry *ent; |
a345bc8d AM |
13832 | asection *s; |
13833 | ||
13834 | if (h->root.type == bfd_link_hash_indirect) | |
13835 | return TRUE; | |
13836 | ||
49c09209 AM |
13837 | info = inf; |
13838 | htab = ppc_hash_table (info); | |
13839 | if (htab == NULL) | |
13840 | return FALSE; | |
13841 | ||
13842 | for (ent = h->plt.plist; ent != NULL; ent = ent->next) | |
13843 | if (ent->plt.offset != (bfd_vma) -1) | |
13844 | { | |
13845 | /* This symbol has an entry in the procedure linkage | |
13846 | table. Set it up. */ | |
13847 | Elf_Internal_Rela rela; | |
2d7ad24e | 13848 | asection *plt, *relplt; |
49c09209 AM |
13849 | bfd_byte *loc; |
13850 | ||
13851 | if (!htab->elf.dynamic_sections_created | |
13852 | || h->dynindx == -1) | |
13853 | { | |
13854 | if (!(h->def_regular | |
13855 | && (h->root.type == bfd_link_hash_defined | |
13856 | || h->root.type == bfd_link_hash_defweak))) | |
13857 | continue; | |
2d7ad24e AM |
13858 | if (h->type == STT_GNU_IFUNC) |
13859 | { | |
13860 | plt = htab->elf.iplt; | |
13861 | relplt = htab->elf.irelplt; | |
13862 | htab->local_ifunc_resolver = 1; | |
13863 | if (htab->opd_abi) | |
13864 | rela.r_info = ELF64_R_INFO (0, R_PPC64_JMP_IREL); | |
13865 | else | |
13866 | rela.r_info = ELF64_R_INFO (0, R_PPC64_IRELATIVE); | |
13867 | } | |
49c09209 | 13868 | else |
2d7ad24e AM |
13869 | { |
13870 | plt = htab->pltlocal; | |
13871 | if (bfd_link_pic (info)) | |
13872 | { | |
13873 | relplt = htab->relpltlocal; | |
13874 | if (htab->opd_abi) | |
13875 | rela.r_info = ELF64_R_INFO (0, R_PPC64_JMP_SLOT); | |
13876 | else | |
13877 | rela.r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE); | |
13878 | } | |
13879 | else | |
13880 | relplt = NULL; | |
13881 | } | |
49c09209 AM |
13882 | rela.r_addend = (h->root.u.def.value |
13883 | + h->root.u.def.section->output_offset | |
13884 | + h->root.u.def.section->output_section->vma | |
13885 | + ent->addend); | |
2d7ad24e AM |
13886 | |
13887 | if (relplt == NULL) | |
13888 | { | |
13889 | loc = plt->contents + ent->plt.offset; | |
13890 | bfd_put_64 (info->output_bfd, rela.r_addend, loc); | |
13891 | if (htab->opd_abi) | |
13892 | { | |
13893 | bfd_vma toc = elf_gp (info->output_bfd); | |
13894 | toc += htab->sec_info[h->root.u.def.section->id].toc_off; | |
13895 | bfd_put_64 (info->output_bfd, toc, loc + 8); | |
13896 | } | |
13897 | } | |
13898 | else | |
13899 | { | |
13900 | rela.r_offset = (plt->output_section->vma | |
13901 | + plt->output_offset | |
13902 | + ent->plt.offset); | |
13903 | loc = relplt->contents + (relplt->reloc_count++ | |
13904 | * sizeof (Elf64_External_Rela)); | |
13905 | bfd_elf64_swap_reloca_out (info->output_bfd, &rela, loc); | |
13906 | } | |
49c09209 AM |
13907 | } |
13908 | else | |
13909 | { | |
13910 | rela.r_offset = (htab->elf.splt->output_section->vma | |
13911 | + htab->elf.splt->output_offset | |
13912 | + ent->plt.offset); | |
13913 | rela.r_info = ELF64_R_INFO (h->dynindx, R_PPC64_JMP_SLOT); | |
13914 | rela.r_addend = ent->addend; | |
13915 | loc = (htab->elf.srelplt->contents | |
13916 | + ((ent->plt.offset - PLT_INITIAL_ENTRY_SIZE (htab)) | |
13917 | / PLT_ENTRY_SIZE (htab) * sizeof (Elf64_External_Rela))); | |
13918 | if (h->type == STT_GNU_IFUNC && is_static_defined (h)) | |
13919 | htab->maybe_local_ifunc_resolver = 1; | |
2d7ad24e | 13920 | bfd_elf64_swap_reloca_out (info->output_bfd, &rela, loc); |
49c09209 | 13921 | } |
49c09209 AM |
13922 | } |
13923 | ||
a345bc8d AM |
13924 | if (!h->pointer_equality_needed) |
13925 | return TRUE; | |
13926 | ||
13927 | if (h->def_regular) | |
13928 | return TRUE; | |
13929 | ||
9e390558 | 13930 | s = htab->global_entry; |
49c09209 AM |
13931 | if (s == NULL || s->size == 0) |
13932 | return TRUE; | |
13933 | ||
13934 | for (ent = h->plt.plist; ent != NULL; ent = ent->next) | |
13935 | if (ent->plt.offset != (bfd_vma) -1 | |
13936 | && ent->addend == 0) | |
a345bc8d AM |
13937 | { |
13938 | bfd_byte *p; | |
13939 | asection *plt; | |
13940 | bfd_vma off; | |
13941 | ||
a345bc8d | 13942 | p = s->contents + h->root.u.def.value; |
33e44f2e | 13943 | plt = htab->elf.splt; |
a345bc8d AM |
13944 | if (!htab->elf.dynamic_sections_created |
13945 | || h->dynindx == -1) | |
2d7ad24e AM |
13946 | { |
13947 | if (h->type == STT_GNU_IFUNC) | |
13948 | plt = htab->elf.iplt; | |
13949 | else | |
13950 | plt = htab->pltlocal; | |
13951 | } | |
49c09209 | 13952 | off = ent->plt.offset + plt->output_offset + plt->output_section->vma; |
a345bc8d AM |
13953 | off -= h->root.u.def.value + s->output_offset + s->output_section->vma; |
13954 | ||
13955 | if (off + 0x80008000 > 0xffffffff || (off & 3) != 0) | |
13956 | { | |
13957 | info->callbacks->einfo | |
c1c8c1ef | 13958 | (_("%P: linkage table error against `%pT'\n"), |
a345bc8d AM |
13959 | h->root.root.string); |
13960 | bfd_set_error (bfd_error_bad_value); | |
13961 | htab->stub_error = TRUE; | |
13962 | } | |
13963 | ||
7341d5e2 AM |
13964 | htab->stub_count[ppc_stub_global_entry - 1] += 1; |
13965 | if (htab->params->emit_stub_syms) | |
13966 | { | |
13967 | size_t len = strlen (h->root.root.string); | |
13968 | char *name = bfd_malloc (sizeof "12345678.global_entry." + len); | |
13969 | ||
13970 | if (name == NULL) | |
13971 | return FALSE; | |
13972 | ||
13973 | sprintf (name, "%08x.global_entry.%s", s->id, h->root.root.string); | |
13974 | h = elf_link_hash_lookup (&htab->elf, name, TRUE, FALSE, FALSE); | |
13975 | if (h == NULL) | |
13976 | return FALSE; | |
13977 | if (h->root.type == bfd_link_hash_new) | |
13978 | { | |
13979 | h->root.type = bfd_link_hash_defined; | |
13980 | h->root.u.def.section = s; | |
13981 | h->root.u.def.value = p - s->contents; | |
13982 | h->ref_regular = 1; | |
13983 | h->def_regular = 1; | |
13984 | h->ref_regular_nonweak = 1; | |
13985 | h->forced_local = 1; | |
13986 | h->non_elf = 0; | |
2ec55de3 | 13987 | h->root.linker_def = 1; |
7341d5e2 AM |
13988 | } |
13989 | } | |
13990 | ||
a345bc8d AM |
13991 | if (PPC_HA (off) != 0) |
13992 | { | |
13993 | bfd_put_32 (s->owner, ADDIS_R12_R12 | PPC_HA (off), p); | |
13994 | p += 4; | |
13995 | } | |
13996 | bfd_put_32 (s->owner, LD_R12_0R12 | PPC_LO (off), p); | |
13997 | p += 4; | |
13998 | bfd_put_32 (s->owner, MTCTR_R12, p); | |
13999 | p += 4; | |
407aa07c | 14000 | bfd_put_32 (s->owner, BCTR, p); |
a345bc8d AM |
14001 | break; |
14002 | } | |
14003 | return TRUE; | |
14004 | } | |
14005 | ||
49c09209 AM |
14006 | /* Write PLT relocs for locals. */ |
14007 | ||
14008 | static bfd_boolean | |
14009 | write_plt_relocs_for_local_syms (struct bfd_link_info *info) | |
14010 | { | |
14011 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
14012 | bfd *ibfd; | |
14013 | ||
14014 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next) | |
14015 | { | |
14016 | struct got_entry **lgot_ents, **end_lgot_ents; | |
14017 | struct plt_entry **local_plt, **lplt, **end_local_plt; | |
14018 | Elf_Internal_Shdr *symtab_hdr; | |
14019 | bfd_size_type locsymcount; | |
14020 | Elf_Internal_Sym *local_syms = NULL; | |
14021 | struct plt_entry *ent; | |
14022 | ||
14023 | if (!is_ppc64_elf (ibfd)) | |
14024 | continue; | |
14025 | ||
14026 | lgot_ents = elf_local_got_ents (ibfd); | |
14027 | if (!lgot_ents) | |
14028 | continue; | |
14029 | ||
14030 | symtab_hdr = &elf_symtab_hdr (ibfd); | |
14031 | locsymcount = symtab_hdr->sh_info; | |
14032 | end_lgot_ents = lgot_ents + locsymcount; | |
14033 | local_plt = (struct plt_entry **) end_lgot_ents; | |
14034 | end_local_plt = local_plt + locsymcount; | |
14035 | for (lplt = local_plt; lplt < end_local_plt; ++lplt) | |
14036 | for (ent = *lplt; ent != NULL; ent = ent->next) | |
14037 | if (ent->plt.offset != (bfd_vma) -1) | |
14038 | { | |
14039 | Elf_Internal_Sym *sym; | |
14040 | asection *sym_sec; | |
14041 | asection *plt, *relplt; | |
14042 | bfd_byte *loc; | |
14043 | bfd_vma val; | |
49c09209 AM |
14044 | |
14045 | if (!get_sym_h (NULL, &sym, &sym_sec, NULL, &local_syms, | |
14046 | lplt - local_plt, ibfd)) | |
14047 | { | |
14048 | if (local_syms != NULL | |
14049 | && symtab_hdr->contents != (unsigned char *) local_syms) | |
14050 | free (local_syms); | |
14051 | return FALSE; | |
14052 | } | |
14053 | ||
14054 | val = sym->st_value + ent->addend; | |
14055 | val += PPC64_LOCAL_ENTRY_OFFSET (sym->st_other); | |
14056 | if (sym_sec != NULL && sym_sec->output_section != NULL) | |
14057 | val += sym_sec->output_offset + sym_sec->output_section->vma; | |
14058 | ||
2d7ad24e AM |
14059 | if (ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC) |
14060 | { | |
14061 | htab->local_ifunc_resolver = 1; | |
14062 | plt = htab->elf.iplt; | |
14063 | relplt = htab->elf.irelplt; | |
14064 | } | |
14065 | else | |
14066 | { | |
14067 | plt = htab->pltlocal; | |
14068 | relplt = bfd_link_pic (info) ? htab->relpltlocal : NULL; | |
14069 | } | |
49c09209 | 14070 | |
2d7ad24e AM |
14071 | if (relplt == NULL) |
14072 | { | |
14073 | loc = plt->contents + ent->plt.offset; | |
14074 | bfd_put_64 (info->output_bfd, val, loc); | |
14075 | if (htab->opd_abi) | |
14076 | { | |
14077 | bfd_vma toc = elf_gp (ibfd); | |
14078 | bfd_put_64 (info->output_bfd, toc, loc + 8); | |
14079 | } | |
14080 | } | |
49c09209 | 14081 | else |
2d7ad24e AM |
14082 | { |
14083 | Elf_Internal_Rela rela; | |
14084 | rela.r_offset = (ent->plt.offset | |
14085 | + plt->output_offset | |
14086 | + plt->output_section->vma); | |
14087 | if (ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC) | |
14088 | { | |
14089 | if (htab->opd_abi) | |
14090 | rela.r_info = ELF64_R_INFO (0, R_PPC64_JMP_IREL); | |
14091 | else | |
14092 | rela.r_info = ELF64_R_INFO (0, R_PPC64_IRELATIVE); | |
14093 | } | |
14094 | else | |
14095 | { | |
14096 | if (htab->opd_abi) | |
14097 | rela.r_info = ELF64_R_INFO (0, R_PPC64_JMP_SLOT); | |
14098 | else | |
14099 | rela.r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE); | |
14100 | } | |
14101 | rela.r_addend = val; | |
14102 | loc = relplt->contents + (relplt->reloc_count++ | |
14103 | * sizeof (Elf64_External_Rela)); | |
14104 | bfd_elf64_swap_reloca_out (info->output_bfd, &rela, loc); | |
14105 | } | |
49c09209 AM |
14106 | } |
14107 | ||
14108 | if (local_syms != NULL | |
14109 | && symtab_hdr->contents != (unsigned char *) local_syms) | |
14110 | { | |
14111 | if (!info->keep_memory) | |
14112 | free (local_syms); | |
14113 | else | |
14114 | symtab_hdr->contents = (unsigned char *) local_syms; | |
14115 | } | |
14116 | } | |
14117 | return TRUE; | |
14118 | } | |
14119 | ||
721956f4 AM |
14120 | /* Build all the stubs associated with the current output file. |
14121 | The stubs are kept in a hash table attached to the main linker | |
14122 | hash table. This function is called via gldelf64ppc_finish. */ | |
14123 | ||
b34976b6 | 14124 | bfd_boolean |
e7d1c40c | 14125 | ppc64_elf_build_stubs (struct bfd_link_info *info, |
4ce794b7 | 14126 | char **stats) |
5d1634d7 AM |
14127 | { |
14128 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
a4b6fadd | 14129 | struct map_stub *group; |
721956f4 | 14130 | asection *stub_sec; |
5d1634d7 | 14131 | bfd_byte *p; |
e717da7e | 14132 | int stub_sec_count = 0; |
5d1634d7 | 14133 | |
4dfe6ac6 NC |
14134 | if (htab == NULL) |
14135 | return FALSE; | |
14136 | ||
eea6121a | 14137 | /* Allocate memory to hold the linker stubs. */ |
d4aaa2a0 | 14138 | for (group = htab->group; group != NULL; group = group->next) |
df136d64 AM |
14139 | { |
14140 | group->eh_size = 0; | |
14141 | group->lr_restore = 0; | |
14142 | if ((stub_sec = group->stub_sec) != NULL | |
14143 | && stub_sec->size != 0) | |
14144 | { | |
14145 | stub_sec->contents = bfd_zalloc (htab->params->stub_bfd, | |
14146 | stub_sec->size); | |
14147 | if (stub_sec->contents == NULL) | |
14148 | return FALSE; | |
14149 | stub_sec->size = 0; | |
14150 | } | |
14151 | } | |
5d1634d7 | 14152 | |
23eb7e01 | 14153 | if (htab->glink != NULL && htab->glink->size != 0) |
5d1634d7 | 14154 | { |
9f951329 | 14155 | unsigned int indx; |
ad8e1ba5 | 14156 | bfd_vma plt0; |
9f951329 | 14157 | |
721956f4 | 14158 | /* Build the .glink plt call stub. */ |
e7d1c40c | 14159 | if (htab->params->emit_stub_syms) |
97b639ba AM |
14160 | { |
14161 | struct elf_link_hash_entry *h; | |
468392fb AM |
14162 | h = elf_link_hash_lookup (&htab->elf, "__glink_PLTresolve", |
14163 | TRUE, FALSE, FALSE); | |
97b639ba AM |
14164 | if (h == NULL) |
14165 | return FALSE; | |
14166 | if (h->root.type == bfd_link_hash_new) | |
14167 | { | |
14168 | h->root.type = bfd_link_hash_defined; | |
14169 | h->root.u.def.section = htab->glink; | |
ee4bf8d2 | 14170 | h->root.u.def.value = 8; |
f5385ebf AM |
14171 | h->ref_regular = 1; |
14172 | h->def_regular = 1; | |
14173 | h->ref_regular_nonweak = 1; | |
14174 | h->forced_local = 1; | |
14175 | h->non_elf = 0; | |
2ec55de3 | 14176 | h->root.linker_def = 1; |
97b639ba AM |
14177 | } |
14178 | } | |
33e44f2e AM |
14179 | plt0 = (htab->elf.splt->output_section->vma |
14180 | + htab->elf.splt->output_offset | |
14181 | - 16); | |
176a0d42 AM |
14182 | if (info->emitrelocations) |
14183 | { | |
14184 | Elf_Internal_Rela *r = get_relocs (htab->glink, 1); | |
14185 | if (r == NULL) | |
14186 | return FALSE; | |
14187 | r->r_offset = (htab->glink->output_offset | |
14188 | + htab->glink->output_section->vma); | |
14189 | r->r_info = ELF64_R_INFO (0, R_PPC64_REL64); | |
14190 | r->r_addend = plt0; | |
14191 | } | |
4ce794b7 | 14192 | p = htab->glink->contents; |
176a0d42 | 14193 | plt0 -= htab->glink->output_section->vma + htab->glink->output_offset; |
ee4bf8d2 AM |
14194 | bfd_put_64 (htab->glink->owner, plt0, p); |
14195 | p += 8; | |
b9e5796b AM |
14196 | if (htab->opd_abi) |
14197 | { | |
14198 | bfd_put_32 (htab->glink->owner, MFLR_R12, p); | |
14199 | p += 4; | |
14200 | bfd_put_32 (htab->glink->owner, BCL_20_31, p); | |
14201 | p += 4; | |
14202 | bfd_put_32 (htab->glink->owner, MFLR_R11, p); | |
14203 | p += 4; | |
14204 | bfd_put_32 (htab->glink->owner, LD_R2_0R11 | (-16 & 0xfffc), p); | |
14205 | p += 4; | |
14206 | bfd_put_32 (htab->glink->owner, MTLR_R12, p); | |
14207 | p += 4; | |
14208 | bfd_put_32 (htab->glink->owner, ADD_R11_R2_R11, p); | |
14209 | p += 4; | |
14210 | bfd_put_32 (htab->glink->owner, LD_R12_0R11, p); | |
14211 | p += 4; | |
14212 | bfd_put_32 (htab->glink->owner, LD_R2_0R11 | 8, p); | |
14213 | p += 4; | |
14214 | bfd_put_32 (htab->glink->owner, MTCTR_R12, p); | |
14215 | p += 4; | |
14216 | bfd_put_32 (htab->glink->owner, LD_R11_0R11 | 16, p); | |
14217 | p += 4; | |
14218 | } | |
14219 | else | |
14220 | { | |
14221 | bfd_put_32 (htab->glink->owner, MFLR_R0, p); | |
14222 | p += 4; | |
14223 | bfd_put_32 (htab->glink->owner, BCL_20_31, p); | |
14224 | p += 4; | |
14225 | bfd_put_32 (htab->glink->owner, MFLR_R11, p); | |
14226 | p += 4; | |
f378ab09 AM |
14227 | bfd_put_32 (htab->glink->owner, STD_R2_0R1 + 24, p); |
14228 | p += 4; | |
b9e5796b AM |
14229 | bfd_put_32 (htab->glink->owner, LD_R2_0R11 | (-16 & 0xfffc), p); |
14230 | p += 4; | |
14231 | bfd_put_32 (htab->glink->owner, MTLR_R0, p); | |
14232 | p += 4; | |
14233 | bfd_put_32 (htab->glink->owner, SUB_R12_R12_R11, p); | |
14234 | p += 4; | |
14235 | bfd_put_32 (htab->glink->owner, ADD_R11_R2_R11, p); | |
14236 | p += 4; | |
14237 | bfd_put_32 (htab->glink->owner, ADDI_R0_R12 | (-48 & 0xffff), p); | |
14238 | p += 4; | |
14239 | bfd_put_32 (htab->glink->owner, LD_R12_0R11, p); | |
14240 | p += 4; | |
14241 | bfd_put_32 (htab->glink->owner, SRDI_R0_R0_2, p); | |
14242 | p += 4; | |
14243 | bfd_put_32 (htab->glink->owner, MTCTR_R12, p); | |
14244 | p += 4; | |
14245 | bfd_put_32 (htab->glink->owner, LD_R11_0R11 | 8, p); | |
14246 | p += 4; | |
14247 | } | |
407aa07c AM |
14248 | bfd_put_32 (htab->glink->owner, BCTR, p); |
14249 | p += 4; | |
c75bc4f7 | 14250 | BFD_ASSERT (p == htab->glink->contents + GLINK_PLTRESOLVE_SIZE (htab)); |
ad8e1ba5 | 14251 | |
9f951329 AM |
14252 | /* Build the .glink lazy link call stubs. */ |
14253 | indx = 0; | |
9e390558 | 14254 | while (p < htab->glink->contents + htab->glink->size) |
9f951329 | 14255 | { |
b9e5796b | 14256 | if (htab->opd_abi) |
9f951329 | 14257 | { |
b9e5796b AM |
14258 | if (indx < 0x8000) |
14259 | { | |
14260 | bfd_put_32 (htab->glink->owner, LI_R0_0 | indx, p); | |
14261 | p += 4; | |
14262 | } | |
14263 | else | |
14264 | { | |
14265 | bfd_put_32 (htab->glink->owner, LIS_R0_0 | PPC_HI (indx), p); | |
14266 | p += 4; | |
14267 | bfd_put_32 (htab->glink->owner, ORI_R0_R0_0 | PPC_LO (indx), | |
14268 | p); | |
14269 | p += 4; | |
14270 | } | |
9f951329 | 14271 | } |
4ce794b7 | 14272 | bfd_put_32 (htab->glink->owner, |
ee4bf8d2 | 14273 | B_DOT | ((htab->glink->contents - p + 8) & 0x3fffffc), p); |
a16d5acb | 14274 | indx++; |
9f951329 AM |
14275 | p += 4; |
14276 | } | |
5d1634d7 | 14277 | } |
5d1634d7 | 14278 | |
49c09209 AM |
14279 | /* Build .glink global entry stubs, and PLT relocs for globals. */ |
14280 | elf_link_hash_traverse (&htab->elf, build_global_entry_stubs_and_plt, info); | |
14281 | ||
14282 | if (!write_plt_relocs_for_local_syms (info)) | |
14283 | return FALSE; | |
9e390558 | 14284 | |
7341d5e2 | 14285 | if (htab->brlt != NULL && htab->brlt->size != 0) |
721956f4 | 14286 | { |
4ce794b7 | 14287 | htab->brlt->contents = bfd_zalloc (htab->brlt->owner, |
eea6121a | 14288 | htab->brlt->size); |
4ce794b7 | 14289 | if (htab->brlt->contents == NULL) |
b34976b6 | 14290 | return FALSE; |
721956f4 | 14291 | } |
ee75fd95 | 14292 | if (htab->relbrlt != NULL && htab->relbrlt->size != 0) |
63bc6f6c AM |
14293 | { |
14294 | htab->relbrlt->contents = bfd_zalloc (htab->relbrlt->owner, | |
eea6121a | 14295 | htab->relbrlt->size); |
63bc6f6c AM |
14296 | if (htab->relbrlt->contents == NULL) |
14297 | return FALSE; | |
14298 | } | |
5d1634d7 | 14299 | |
721956f4 AM |
14300 | /* Build the stubs as directed by the stub hash table. */ |
14301 | bfd_hash_traverse (&htab->stub_hash_table, ppc_build_one_stub, info); | |
5d1634d7 | 14302 | |
a4b6fadd AM |
14303 | for (group = htab->group; group != NULL; group = group->next) |
14304 | if (group->needs_save_res) | |
7dda8d3c | 14305 | group->stub_sec->size += htab->sfpr->size; |
a4b6fadd | 14306 | |
aa8a7074 AM |
14307 | if (htab->relbrlt != NULL) |
14308 | htab->relbrlt->reloc_count = 0; | |
14309 | ||
e7d1c40c | 14310 | if (htab->params->plt_stub_align != 0) |
d4aaa2a0 AM |
14311 | for (group = htab->group; group != NULL; group = group->next) |
14312 | if ((stub_sec = group->stub_sec) != NULL) | |
691d2e9a AM |
14313 | { |
14314 | int align = abs (htab->params->plt_stub_align); | |
14315 | stub_sec->size = (stub_sec->size + (1 << align) - 1) & -(1 << align); | |
14316 | } | |
794e51c0 | 14317 | |
7dda8d3c AM |
14318 | for (group = htab->group; group != NULL; group = group->next) |
14319 | if (group->needs_save_res) | |
14320 | { | |
14321 | stub_sec = group->stub_sec; | |
14322 | memcpy (stub_sec->contents + stub_sec->size - htab->sfpr->size, | |
14323 | htab->sfpr->contents, htab->sfpr->size); | |
14324 | if (htab->params->emit_stub_syms) | |
14325 | { | |
14326 | unsigned int i; | |
14327 | ||
14328 | for (i = 0; i < ARRAY_SIZE (save_res_funcs); i++) | |
14329 | if (!sfpr_define (info, &save_res_funcs[i], stub_sec)) | |
14330 | return FALSE; | |
14331 | } | |
14332 | } | |
14333 | ||
df136d64 AM |
14334 | if (htab->glink_eh_frame != NULL |
14335 | && htab->glink_eh_frame->size != 0) | |
14336 | { | |
14337 | bfd_vma val; | |
14338 | size_t align = 4; | |
14339 | ||
14340 | p = htab->glink_eh_frame->contents; | |
14341 | p += (sizeof (glink_eh_frame_cie) + align - 1) & -align; | |
14342 | ||
14343 | for (group = htab->group; group != NULL; group = group->next) | |
14344 | if (group->eh_size != 0) | |
14345 | { | |
14346 | /* Offset to stub section. */ | |
14347 | val = (group->stub_sec->output_section->vma | |
14348 | + group->stub_sec->output_offset); | |
14349 | val -= (htab->glink_eh_frame->output_section->vma | |
14350 | + htab->glink_eh_frame->output_offset | |
14351 | + (p + 8 - htab->glink_eh_frame->contents)); | |
14352 | if (val + 0x80000000 > 0xffffffff) | |
14353 | { | |
14354 | _bfd_error_handler | |
14355 | (_("%s offset too large for .eh_frame sdata4 encoding"), | |
14356 | group->stub_sec->name); | |
14357 | return FALSE; | |
14358 | } | |
14359 | bfd_put_32 (htab->elf.dynobj, val, p + 8); | |
14360 | p += (group->eh_size + 17 + 3) & -4; | |
14361 | } | |
14362 | if (htab->glink != NULL && htab->glink->size != 0) | |
14363 | { | |
14364 | /* Offset to .glink. */ | |
14365 | val = (htab->glink->output_section->vma | |
14366 | + htab->glink->output_offset | |
14367 | + 8); | |
14368 | val -= (htab->glink_eh_frame->output_section->vma | |
14369 | + htab->glink_eh_frame->output_offset | |
14370 | + (p + 8 - htab->glink_eh_frame->contents)); | |
14371 | if (val + 0x80000000 > 0xffffffff) | |
14372 | { | |
14373 | _bfd_error_handler | |
14374 | (_("%s offset too large for .eh_frame sdata4 encoding"), | |
14375 | htab->glink->name); | |
14376 | return FALSE; | |
14377 | } | |
14378 | bfd_put_32 (htab->elf.dynobj, val, p + 8); | |
14379 | p += (24 + align - 1) & -align; | |
14380 | } | |
14381 | } | |
14382 | ||
d4aaa2a0 AM |
14383 | for (group = htab->group; group != NULL; group = group->next) |
14384 | if ((stub_sec = group->stub_sec) != NULL) | |
e717da7e AM |
14385 | { |
14386 | stub_sec_count += 1; | |
c9301e31 AM |
14387 | if (stub_sec->rawsize != stub_sec->size |
14388 | && (htab->stub_iteration <= STUB_SHRINK_ITER | |
14389 | || stub_sec->rawsize < stub_sec->size)) | |
e717da7e AM |
14390 | break; |
14391 | } | |
5d1634d7 | 14392 | |
25516cc5 | 14393 | if (group != NULL) |
5d1634d7 | 14394 | { |
b34976b6 | 14395 | htab->stub_error = TRUE; |
cf97bcb0 | 14396 | _bfd_error_handler (_("stubs don't match calculated size")); |
5d1634d7 | 14397 | } |
721956f4 | 14398 | |
d2a300cf AM |
14399 | if (htab->stub_error) |
14400 | return FALSE; | |
14401 | ||
14402 | if (stats != NULL) | |
14403 | { | |
db84fff3 | 14404 | size_t len; |
d2a300cf AM |
14405 | *stats = bfd_malloc (500); |
14406 | if (*stats == NULL) | |
14407 | return FALSE; | |
14408 | ||
db84fff3 AM |
14409 | len = sprintf (*stats, |
14410 | ngettext ("linker stubs in %u group\n", | |
14411 | "linker stubs in %u groups\n", | |
14412 | stub_sec_count), | |
14413 | stub_sec_count); | |
05d0e962 AM |
14414 | sprintf (*stats + len, _(" branch %lu\n" |
14415 | " branch toc adj %lu\n" | |
14416 | " branch notoc %lu\n" | |
14417 | " branch both %lu\n" | |
14418 | " long branch %lu\n" | |
14419 | " long toc adj %lu\n" | |
14420 | " long notoc %lu\n" | |
14421 | " long both %lu\n" | |
14422 | " plt call %lu\n" | |
14423 | " plt call save %lu\n" | |
14424 | " plt call notoc %lu\n" | |
14425 | " plt call both %lu\n" | |
14426 | " global entry %lu"), | |
4ce794b7 AM |
14427 | htab->stub_count[ppc_stub_long_branch - 1], |
14428 | htab->stub_count[ppc_stub_long_branch_r2off - 1], | |
05d0e962 AM |
14429 | htab->stub_count[ppc_stub_long_branch_notoc - 1], |
14430 | htab->stub_count[ppc_stub_long_branch_both - 1], | |
4ce794b7 AM |
14431 | htab->stub_count[ppc_stub_plt_branch - 1], |
14432 | htab->stub_count[ppc_stub_plt_branch_r2off - 1], | |
05d0e962 AM |
14433 | htab->stub_count[ppc_stub_plt_branch_notoc - 1], |
14434 | htab->stub_count[ppc_stub_plt_branch_both - 1], | |
794e51c0 | 14435 | htab->stub_count[ppc_stub_plt_call - 1], |
7341d5e2 | 14436 | htab->stub_count[ppc_stub_plt_call_r2save - 1], |
05d0e962 AM |
14437 | htab->stub_count[ppc_stub_plt_call_notoc - 1], |
14438 | htab->stub_count[ppc_stub_plt_call_both - 1], | |
7341d5e2 | 14439 | htab->stub_count[ppc_stub_global_entry - 1]); |
d2a300cf AM |
14440 | } |
14441 | return TRUE; | |
5bd4f169 AM |
14442 | } |
14443 | ||
60124e18 AM |
14444 | /* What to do when ld finds relocations against symbols defined in |
14445 | discarded sections. */ | |
14446 | ||
14447 | static unsigned int | |
14448 | ppc64_elf_action_discarded (asection *sec) | |
14449 | { | |
14450 | if (strcmp (".opd", sec->name) == 0) | |
14451 | return 0; | |
14452 | ||
14453 | if (strcmp (".toc", sec->name) == 0) | |
14454 | return 0; | |
14455 | ||
bce50a28 JJ |
14456 | if (strcmp (".toc1", sec->name) == 0) |
14457 | return 0; | |
14458 | ||
60124e18 AM |
14459 | return _bfd_elf_default_action_discarded (sec); |
14460 | } | |
14461 | ||
5bd4f169 AM |
14462 | /* The RELOCATE_SECTION function is called by the ELF backend linker |
14463 | to handle the relocations for a section. | |
14464 | ||
14465 | The relocs are always passed as Rela structures; if the section | |
14466 | actually uses Rel structures, the r_addend field will always be | |
14467 | zero. | |
14468 | ||
14469 | This function is responsible for adjust the section contents as | |
14470 | necessary, and (if using Rela relocs and generating a | |
1049f94e | 14471 | relocatable output file) adjusting the reloc addend as |
5bd4f169 AM |
14472 | necessary. |
14473 | ||
14474 | This function does not have to worry about setting the reloc | |
14475 | address or the reloc symbol index. | |
14476 | ||
14477 | LOCAL_SYMS is a pointer to the swapped in local symbols. | |
14478 | ||
14479 | LOCAL_SECTIONS is an array giving the section in the input file | |
14480 | corresponding to the st_shndx field of each local symbol. | |
14481 | ||
14482 | The global hash table entry for the global symbols can be found | |
14483 | via elf_sym_hashes (input_bfd). | |
14484 | ||
1049f94e | 14485 | When generating relocatable output, this function must handle |
5bd4f169 AM |
14486 | STB_LOCAL/STT_SECTION symbols specially. The output symbol is |
14487 | going to be the section symbol corresponding to the output | |
14488 | section, which means that the addend must be adjusted | |
14489 | accordingly. */ | |
14490 | ||
b34976b6 | 14491 | static bfd_boolean |
4ce794b7 AM |
14492 | ppc64_elf_relocate_section (bfd *output_bfd, |
14493 | struct bfd_link_info *info, | |
14494 | bfd *input_bfd, | |
14495 | asection *input_section, | |
14496 | bfd_byte *contents, | |
14497 | Elf_Internal_Rela *relocs, | |
14498 | Elf_Internal_Sym *local_syms, | |
14499 | asection **local_sections) | |
5bd4f169 | 14500 | { |
65f38f15 | 14501 | struct ppc_link_hash_table *htab; |
5bd4f169 AM |
14502 | Elf_Internal_Shdr *symtab_hdr; |
14503 | struct elf_link_hash_entry **sym_hashes; | |
5bd4f169 | 14504 | Elf_Internal_Rela *rel; |
c316a17c | 14505 | Elf_Internal_Rela *wrel; |
5bd4f169 | 14506 | Elf_Internal_Rela *relend; |
411e1bfb AM |
14507 | Elf_Internal_Rela outrel; |
14508 | bfd_byte *loc; | |
411e1bfb | 14509 | struct got_entry **local_got_ents; |
5bd4f169 | 14510 | bfd_vma TOCstart; |
b34976b6 AM |
14511 | bfd_boolean ret = TRUE; |
14512 | bfd_boolean is_opd; | |
794e51c0 AM |
14513 | /* Assume 'at' branch hints. */ |
14514 | bfd_boolean is_isa_v2 = TRUE; | |
95f0d0d2 | 14515 | bfd_vma d_offset = (bfd_big_endian (input_bfd) ? 2 : 0); |
5bd4f169 | 14516 | |
65f38f15 | 14517 | /* Initialize howto table if needed. */ |
5bd4f169 | 14518 | if (!ppc64_elf_howto_table[R_PPC64_ADDR32]) |
5bd4f169 AM |
14519 | ppc_howto_init (); |
14520 | ||
65f38f15 | 14521 | htab = ppc_hash_table (info); |
4dfe6ac6 NC |
14522 | if (htab == NULL) |
14523 | return FALSE; | |
ee75fd95 AM |
14524 | |
14525 | /* Don't relocate stub sections. */ | |
e7d1c40c | 14526 | if (input_section->owner == htab->params->stub_bfd) |
ee75fd95 AM |
14527 | return TRUE; |
14528 | ||
0c8d6e5c | 14529 | BFD_ASSERT (is_ppc64_elf (input_bfd)); |
0ffa91dd | 14530 | |
411e1bfb | 14531 | local_got_ents = elf_local_got_ents (input_bfd); |
5bd4f169 | 14532 | TOCstart = elf_gp (output_bfd); |
0ffa91dd | 14533 | symtab_hdr = &elf_symtab_hdr (input_bfd); |
5bd4f169 | 14534 | sym_hashes = elf_sym_hashes (input_bfd); |
7c8fe5c4 | 14535 | is_opd = ppc64_elf_section_data (input_section)->sec_type == sec_opd; |
65f38f15 | 14536 | |
c316a17c | 14537 | rel = wrel = relocs; |
5bd4f169 | 14538 | relend = relocs + input_section->reloc_count; |
c316a17c | 14539 | for (; rel < relend; wrel++, rel++) |
5bd4f169 | 14540 | { |
04c9666a | 14541 | enum elf_ppc64_reloc_type r_type; |
31c76678 | 14542 | bfd_vma addend; |
5bd4f169 AM |
14543 | bfd_reloc_status_type r; |
14544 | Elf_Internal_Sym *sym; | |
14545 | asection *sec; | |
039b3fef AM |
14546 | struct elf_link_hash_entry *h_elf; |
14547 | struct ppc_link_hash_entry *h; | |
14548 | struct ppc_link_hash_entry *fdh; | |
5bd4f169 | 14549 | const char *sym_name; |
0d4792f7 | 14550 | unsigned long r_symndx, toc_symndx; |
3a71aa26 | 14551 | bfd_vma toc_addend; |
f961d9dd AM |
14552 | unsigned char tls_mask, tls_gd, tls_type; |
14553 | unsigned char sym_type; | |
5bd4f169 | 14554 | bfd_vma relocation; |
23cedd1d | 14555 | bfd_boolean unresolved_reloc, save_unresolved_reloc; |
b34976b6 | 14556 | bfd_boolean warned; |
bc30df16 | 14557 | enum { DEST_NORMAL, DEST_OPD, DEST_STUB } reloc_dest; |
67f0cbdb | 14558 | unsigned int insn; |
e11840f9 | 14559 | unsigned int mask; |
721956f4 AM |
14560 | struct ppc_stub_hash_entry *stub_entry; |
14561 | bfd_vma max_br_offset; | |
14562 | bfd_vma from; | |
c316a17c | 14563 | Elf_Internal_Rela orig_rel; |
b80eed39 AM |
14564 | reloc_howto_type *howto; |
14565 | struct reloc_howto_struct alt_howto; | |
5bd4f169 | 14566 | |
c316a17c AM |
14567 | again: |
14568 | orig_rel = *rel; | |
14569 | ||
4ce794b7 | 14570 | r_type = ELF64_R_TYPE (rel->r_info); |
5bd4f169 | 14571 | r_symndx = ELF64_R_SYM (rel->r_info); |
ee87f2da AM |
14572 | |
14573 | /* For old style R_PPC64_TOC relocs with a zero symbol, use the | |
14574 | symbol of the previous ADDR64 reloc. The symbol gives us the | |
14575 | proper TOC base to use. */ | |
14576 | if (rel->r_info == ELF64_R_INFO (0, R_PPC64_TOC) | |
c316a17c AM |
14577 | && wrel != relocs |
14578 | && ELF64_R_TYPE (wrel[-1].r_info) == R_PPC64_ADDR64 | |
ee87f2da | 14579 | && is_opd) |
c316a17c | 14580 | r_symndx = ELF64_R_SYM (wrel[-1].r_info); |
ee87f2da | 14581 | |
4ce794b7 AM |
14582 | sym = NULL; |
14583 | sec = NULL; | |
039b3fef | 14584 | h_elf = NULL; |
4ce794b7 | 14585 | sym_name = NULL; |
b34976b6 AM |
14586 | unresolved_reloc = FALSE; |
14587 | warned = FALSE; | |
65f38f15 | 14588 | |
0b13192e | 14589 | if (r_symndx < symtab_hdr->sh_info) |
5bd4f169 AM |
14590 | { |
14591 | /* It's a local symbol. */ | |
74f0fb50 | 14592 | struct _opd_sec_data *opd; |
4025353c | 14593 | |
5bd4f169 AM |
14594 | sym = local_syms + r_symndx; |
14595 | sec = local_sections[r_symndx]; | |
26c61ae5 | 14596 | sym_name = bfd_elf_sym_name (input_bfd, symtab_hdr, sym, sec); |
0d4792f7 | 14597 | sym_type = ELF64_ST_TYPE (sym->st_info); |
8517fae7 | 14598 | relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel); |
74f0fb50 AM |
14599 | opd = get_opd_info (sec); |
14600 | if (opd != NULL && opd->adjust != NULL) | |
1e2f5b6e | 14601 | { |
51aecdc5 AM |
14602 | long adjust = opd->adjust[OPD_NDX (sym->st_value |
14603 | + rel->r_addend)]; | |
4025353c AM |
14604 | if (adjust == -1) |
14605 | relocation = 0; | |
14606 | else | |
4cc603a5 AM |
14607 | { |
14608 | /* If this is a relocation against the opd section sym | |
14609 | and we have edited .opd, adjust the reloc addend so | |
14610 | that ld -r and ld --emit-relocs output is correct. | |
14611 | If it is a reloc against some other .opd symbol, | |
14612 | then the symbol value will be adjusted later. */ | |
14613 | if (ELF_ST_TYPE (sym->st_info) == STT_SECTION) | |
14614 | rel->r_addend += adjust; | |
14615 | else | |
14616 | relocation += adjust; | |
14617 | } | |
1e2f5b6e | 14618 | } |
5bd4f169 AM |
14619 | } |
14620 | else | |
14621 | { | |
62d887d4 L |
14622 | bfd_boolean ignored; |
14623 | ||
b2a8e766 AM |
14624 | RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel, |
14625 | r_symndx, symtab_hdr, sym_hashes, | |
039b3fef | 14626 | h_elf, sec, relocation, |
62d887d4 | 14627 | unresolved_reloc, warned, ignored); |
039b3fef AM |
14628 | sym_name = h_elf->root.root.string; |
14629 | sym_type = h_elf->type; | |
b69fdb4e AM |
14630 | if (sec != NULL |
14631 | && sec->owner == output_bfd | |
14632 | && strcmp (sec->name, ".opd") == 0) | |
14633 | { | |
14634 | /* This is a symbol defined in a linker script. All | |
14635 | such are defined in output sections, even those | |
14636 | defined by simple assignment from a symbol defined in | |
14637 | an input section. Transfer the symbol to an | |
14638 | appropriate input .opd section, so that a branch to | |
14639 | this symbol will be mapped to the location specified | |
14640 | by the opd entry. */ | |
14641 | struct bfd_link_order *lo; | |
14642 | for (lo = sec->map_head.link_order; lo != NULL; lo = lo->next) | |
14643 | if (lo->type == bfd_indirect_link_order) | |
14644 | { | |
14645 | asection *isec = lo->u.indirect.section; | |
14646 | if (h_elf->root.u.def.value >= isec->output_offset | |
14647 | && h_elf->root.u.def.value < (isec->output_offset | |
14648 | + isec->size)) | |
14649 | { | |
14650 | h_elf->root.u.def.value -= isec->output_offset; | |
14651 | h_elf->root.u.def.section = isec; | |
14652 | sec = isec; | |
14653 | break; | |
14654 | } | |
14655 | } | |
14656 | } | |
5bd4f169 | 14657 | } |
039b3fef | 14658 | h = (struct ppc_link_hash_entry *) h_elf; |
5bd4f169 | 14659 | |
dbaa2011 | 14660 | if (sec != NULL && discarded_section (sec)) |
c316a17c AM |
14661 | { |
14662 | _bfd_clear_contents (ppc64_elf_howto_table[r_type], | |
14663 | input_bfd, input_section, | |
14664 | contents + rel->r_offset); | |
14665 | wrel->r_offset = rel->r_offset; | |
14666 | wrel->r_info = 0; | |
14667 | wrel->r_addend = 0; | |
14668 | ||
14669 | /* For ld -r, remove relocations in debug sections against | |
dcd2b8a0 | 14670 | symbols defined in discarded sections. Not done for |
c316a17c AM |
14671 | non-debug to preserve relocs in .eh_frame which the |
14672 | eh_frame editing code expects to be present. */ | |
14673 | if (bfd_link_relocatable (info) | |
14674 | && (input_section->flags & SEC_DEBUGGING)) | |
14675 | wrel--; | |
14676 | ||
14677 | continue; | |
14678 | } | |
ab96bf03 | 14679 | |
0e1862bb | 14680 | if (bfd_link_relocatable (info)) |
c316a17c | 14681 | goto copy_reloc; |
ab96bf03 | 14682 | |
f40da81b AM |
14683 | if (h != NULL && &h->elf == htab->elf.hgot) |
14684 | { | |
6f20ed8a | 14685 | relocation = TOCstart + htab->sec_info[input_section->id].toc_off; |
f40da81b AM |
14686 | sec = bfd_abs_section_ptr; |
14687 | unresolved_reloc = FALSE; | |
14688 | } | |
14689 | ||
951fd09b AM |
14690 | /* TLS optimizations. Replace instruction sequences and relocs |
14691 | based on information we collected in tls_optimize. We edit | |
14692 | RELOCS so that --emit-relocs will output something sensible | |
14693 | for the final instruction stream. */ | |
14694 | tls_mask = 0; | |
14695 | tls_gd = 0; | |
0d4792f7 | 14696 | toc_symndx = 0; |
727fc41e AM |
14697 | if (h != NULL) |
14698 | tls_mask = h->tls_mask; | |
14699 | else if (local_got_ents != NULL) | |
411e1bfb | 14700 | { |
e054468f AM |
14701 | struct plt_entry **local_plt = (struct plt_entry **) |
14702 | (local_got_ents + symtab_hdr->sh_info); | |
f961d9dd | 14703 | unsigned char *lgot_masks = (unsigned char *) |
e054468f | 14704 | (local_plt + symtab_hdr->sh_info); |
727fc41e AM |
14705 | tls_mask = lgot_masks[r_symndx]; |
14706 | } | |
37da22e5 | 14707 | if (((tls_mask & TLS_TLS) == 0 || tls_mask == (TLS_TLS | TLS_MARK)) |
727fc41e AM |
14708 | && (r_type == R_PPC64_TLS |
14709 | || r_type == R_PPC64_TLSGD | |
14710 | || r_type == R_PPC64_TLSLD)) | |
14711 | { | |
14712 | /* Check for toc tls entries. */ | |
f961d9dd | 14713 | unsigned char *toc_tls; |
0d4792f7 | 14714 | |
727fc41e AM |
14715 | if (!get_tls_mask (&toc_tls, &toc_symndx, &toc_addend, |
14716 | &local_syms, rel, input_bfd)) | |
14717 | return FALSE; | |
0d4792f7 | 14718 | |
727fc41e AM |
14719 | if (toc_tls) |
14720 | tls_mask = *toc_tls; | |
0d4792f7 AM |
14721 | } |
14722 | ||
14723 | /* Check that tls relocs are used with tls syms, and non-tls | |
14724 | relocs are used with non-tls syms. */ | |
cf35638d | 14725 | if (r_symndx != STN_UNDEF |
0d4792f7 AM |
14726 | && r_type != R_PPC64_NONE |
14727 | && (h == NULL | |
039b3fef AM |
14728 | || h->elf.root.type == bfd_link_hash_defined |
14729 | || h->elf.root.type == bfd_link_hash_defweak) | |
1d483afe AM |
14730 | && (IS_PPC64_TLS_RELOC (r_type) |
14731 | != (sym_type == STT_TLS | |
14732 | || (sym_type == STT_SECTION | |
14733 | && (sec->flags & SEC_THREAD_LOCAL) != 0)))) | |
0d4792f7 | 14734 | { |
37da22e5 | 14735 | if ((tls_mask & TLS_TLS) != 0 |
727fc41e AM |
14736 | && (r_type == R_PPC64_TLS |
14737 | || r_type == R_PPC64_TLSGD | |
14738 | || r_type == R_PPC64_TLSLD)) | |
0d4792f7 AM |
14739 | /* R_PPC64_TLS is OK against a symbol in the TOC. */ |
14740 | ; | |
14741 | else | |
25f53a85 | 14742 | info->callbacks->einfo |
1d483afe | 14743 | (!IS_PPC64_TLS_RELOC (r_type) |
695344c0 | 14744 | /* xgettext:c-format */ |
c1c8c1ef | 14745 | ? _("%H: %s used with TLS symbol `%pT'\n") |
695344c0 | 14746 | /* xgettext:c-format */ |
c1c8c1ef | 14747 | : _("%H: %s used with non-TLS symbol `%pT'\n"), |
25f53a85 | 14748 | input_bfd, input_section, rel->r_offset, |
0d4792f7 AM |
14749 | ppc64_elf_howto_table[r_type]->name, |
14750 | sym_name); | |
411e1bfb AM |
14751 | } |
14752 | ||
14753 | /* Ensure reloc mapping code below stays sane. */ | |
14754 | if (R_PPC64_TOC16_LO_DS != R_PPC64_TOC16_DS + 1 | |
14755 | || R_PPC64_TOC16_LO != R_PPC64_TOC16 + 1 | |
14756 | || (R_PPC64_GOT_TLSLD16 & 3) != (R_PPC64_GOT_TLSGD16 & 3) | |
14757 | || (R_PPC64_GOT_TLSLD16_LO & 3) != (R_PPC64_GOT_TLSGD16_LO & 3) | |
14758 | || (R_PPC64_GOT_TLSLD16_HI & 3) != (R_PPC64_GOT_TLSGD16_HI & 3) | |
14759 | || (R_PPC64_GOT_TLSLD16_HA & 3) != (R_PPC64_GOT_TLSGD16_HA & 3) | |
14760 | || (R_PPC64_GOT_TLSLD16 & 3) != (R_PPC64_GOT_TPREL16_DS & 3) | |
14761 | || (R_PPC64_GOT_TLSLD16_LO & 3) != (R_PPC64_GOT_TPREL16_LO_DS & 3) | |
14762 | || (R_PPC64_GOT_TLSLD16_HI & 3) != (R_PPC64_GOT_TPREL16_HI & 3) | |
14763 | || (R_PPC64_GOT_TLSLD16_HA & 3) != (R_PPC64_GOT_TPREL16_HA & 3)) | |
14764 | abort (); | |
0d4792f7 | 14765 | |
411e1bfb AM |
14766 | switch (r_type) |
14767 | { | |
14768 | default: | |
411e1bfb AM |
14769 | break; |
14770 | ||
ba761f19 | 14771 | case R_PPC64_LO_DS_OPT: |
95f0d0d2 | 14772 | insn = bfd_get_32 (input_bfd, contents + rel->r_offset - d_offset); |
ba761f19 AM |
14773 | if ((insn & (0x3f << 26)) != 58u << 26) |
14774 | abort (); | |
14775 | insn += (14u << 26) - (58u << 26); | |
95f0d0d2 | 14776 | bfd_put_32 (input_bfd, insn, contents + rel->r_offset - d_offset); |
ba761f19 AM |
14777 | r_type = R_PPC64_TOC16_LO; |
14778 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
14779 | break; | |
14780 | ||
411e1bfb AM |
14781 | case R_PPC64_TOC16: |
14782 | case R_PPC64_TOC16_LO: | |
14783 | case R_PPC64_TOC16_DS: | |
14784 | case R_PPC64_TOC16_LO_DS: | |
411e1bfb AM |
14785 | { |
14786 | /* Check for toc tls entries. */ | |
f961d9dd | 14787 | unsigned char *toc_tls; |
951fd09b | 14788 | int retval; |
411e1bfb | 14789 | |
3a71aa26 AM |
14790 | retval = get_tls_mask (&toc_tls, &toc_symndx, &toc_addend, |
14791 | &local_syms, rel, input_bfd); | |
951fd09b | 14792 | if (retval == 0) |
411e1bfb AM |
14793 | return FALSE; |
14794 | ||
14795 | if (toc_tls) | |
14796 | { | |
951fd09b | 14797 | tls_mask = *toc_tls; |
411e1bfb AM |
14798 | if (r_type == R_PPC64_TOC16_DS |
14799 | || r_type == R_PPC64_TOC16_LO_DS) | |
81407a69 | 14800 | { |
37da22e5 | 14801 | if ((tls_mask & TLS_TLS) != 0 |
81407a69 AM |
14802 | && (tls_mask & (TLS_DTPREL | TLS_TPREL)) == 0) |
14803 | goto toctprel; | |
14804 | } | |
411e1bfb | 14805 | else |
951fd09b AM |
14806 | { |
14807 | /* If we found a GD reloc pair, then we might be | |
14808 | doing a GD->IE transition. */ | |
14809 | if (retval == 2) | |
14810 | { | |
14811 | tls_gd = TLS_TPRELGD; | |
37da22e5 AM |
14812 | if ((tls_mask & TLS_TLS) != 0 |
14813 | && (tls_mask & TLS_GD) == 0) | |
102890f0 | 14814 | goto tls_ldgd_opt; |
951fd09b AM |
14815 | } |
14816 | else if (retval == 3) | |
14817 | { | |
37da22e5 AM |
14818 | if ((tls_mask & TLS_TLS) != 0 |
14819 | && (tls_mask & TLS_LD) == 0) | |
102890f0 | 14820 | goto tls_ldgd_opt; |
951fd09b AM |
14821 | } |
14822 | } | |
411e1bfb AM |
14823 | } |
14824 | } | |
14825 | break; | |
14826 | ||
9d6ded02 AM |
14827 | case R_PPC64_GOT_TPREL16_HI: |
14828 | case R_PPC64_GOT_TPREL16_HA: | |
37da22e5 | 14829 | if ((tls_mask & TLS_TLS) != 0 |
9d6ded02 AM |
14830 | && (tls_mask & TLS_TPREL) == 0) |
14831 | { | |
14832 | rel->r_offset -= d_offset; | |
95f0d0d2 | 14833 | bfd_put_32 (input_bfd, NOP, contents + rel->r_offset); |
9d6ded02 AM |
14834 | r_type = R_PPC64_NONE; |
14835 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
14836 | } | |
14837 | break; | |
14838 | ||
411e1bfb AM |
14839 | case R_PPC64_GOT_TPREL16_DS: |
14840 | case R_PPC64_GOT_TPREL16_LO_DS: | |
37da22e5 | 14841 | if ((tls_mask & TLS_TLS) != 0 |
951fd09b | 14842 | && (tls_mask & TLS_TPREL) == 0) |
411e1bfb | 14843 | { |
81407a69 | 14844 | toctprel: |
95f0d0d2 | 14845 | insn = bfd_get_32 (input_bfd, |
c316a17c | 14846 | contents + rel->r_offset - d_offset); |
411e1bfb AM |
14847 | insn &= 31 << 21; |
14848 | insn |= 0x3c0d0000; /* addis 0,13,0 */ | |
95f0d0d2 | 14849 | bfd_put_32 (input_bfd, insn, |
c316a17c | 14850 | contents + rel->r_offset - d_offset); |
411e1bfb | 14851 | r_type = R_PPC64_TPREL16_HA; |
0d4792f7 AM |
14852 | if (toc_symndx != 0) |
14853 | { | |
14854 | rel->r_info = ELF64_R_INFO (toc_symndx, r_type); | |
3a71aa26 | 14855 | rel->r_addend = toc_addend; |
0d4792f7 AM |
14856 | /* We changed the symbol. Start over in order to |
14857 | get h, sym, sec etc. right. */ | |
c316a17c | 14858 | goto again; |
0d4792f7 AM |
14859 | } |
14860 | else | |
14861 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
411e1bfb AM |
14862 | } |
14863 | break; | |
14864 | ||
14865 | case R_PPC64_TLS: | |
37da22e5 | 14866 | if ((tls_mask & TLS_TLS) != 0 |
951fd09b | 14867 | && (tls_mask & TLS_TPREL) == 0) |
411e1bfb | 14868 | { |
95f0d0d2 | 14869 | insn = bfd_get_32 (input_bfd, contents + rel->r_offset); |
2d0f3896 AM |
14870 | insn = _bfd_elf_ppc_at_tls_transform (insn, 13); |
14871 | if (insn == 0) | |
411e1bfb | 14872 | abort (); |
95f0d0d2 | 14873 | bfd_put_32 (input_bfd, insn, contents + rel->r_offset); |
411e1bfb | 14874 | /* Was PPC64_TLS which sits on insn boundary, now |
4fe5ca5b GM |
14875 | PPC64_TPREL16_LO which is at low-order half-word. */ |
14876 | rel->r_offset += d_offset; | |
0d4792f7 AM |
14877 | r_type = R_PPC64_TPREL16_LO; |
14878 | if (toc_symndx != 0) | |
14879 | { | |
14880 | rel->r_info = ELF64_R_INFO (toc_symndx, r_type); | |
3a71aa26 | 14881 | rel->r_addend = toc_addend; |
0d4792f7 AM |
14882 | /* We changed the symbol. Start over in order to |
14883 | get h, sym, sec etc. right. */ | |
c316a17c | 14884 | goto again; |
0d4792f7 AM |
14885 | } |
14886 | else | |
14887 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
411e1bfb AM |
14888 | } |
14889 | break; | |
14890 | ||
411e1bfb AM |
14891 | case R_PPC64_GOT_TLSGD16_HI: |
14892 | case R_PPC64_GOT_TLSGD16_HA: | |
951fd09b | 14893 | tls_gd = TLS_TPRELGD; |
37da22e5 | 14894 | if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_GD) == 0) |
951fd09b AM |
14895 | goto tls_gdld_hi; |
14896 | break; | |
14897 | ||
411e1bfb AM |
14898 | case R_PPC64_GOT_TLSLD16_HI: |
14899 | case R_PPC64_GOT_TLSLD16_HA: | |
37da22e5 | 14900 | if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_LD) == 0) |
411e1bfb | 14901 | { |
951fd09b AM |
14902 | tls_gdld_hi: |
14903 | if ((tls_mask & tls_gd) != 0) | |
14904 | r_type = (((r_type - (R_PPC64_GOT_TLSGD16 & 3)) & 3) | |
14905 | + R_PPC64_GOT_TPREL16_DS); | |
14906 | else | |
411e1bfb | 14907 | { |
4fe5ca5b | 14908 | rel->r_offset -= d_offset; |
95f0d0d2 | 14909 | bfd_put_32 (input_bfd, NOP, contents + rel->r_offset); |
951fd09b | 14910 | r_type = R_PPC64_NONE; |
411e1bfb | 14911 | } |
951fd09b | 14912 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); |
411e1bfb AM |
14913 | } |
14914 | break; | |
14915 | ||
951fd09b AM |
14916 | case R_PPC64_GOT_TLSGD16: |
14917 | case R_PPC64_GOT_TLSGD16_LO: | |
14918 | tls_gd = TLS_TPRELGD; | |
37da22e5 | 14919 | if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_GD) == 0) |
102890f0 | 14920 | goto tls_ldgd_opt; |
951fd09b | 14921 | break; |
411e1bfb | 14922 | |
951fd09b AM |
14923 | case R_PPC64_GOT_TLSLD16: |
14924 | case R_PPC64_GOT_TLSLD16_LO: | |
37da22e5 | 14925 | if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_LD) == 0) |
951fd09b | 14926 | { |
b9f04fe0 | 14927 | unsigned int insn1, insn2; |
102890f0 AM |
14928 | bfd_vma offset; |
14929 | ||
14930 | tls_ldgd_opt: | |
727fc41e AM |
14931 | offset = (bfd_vma) -1; |
14932 | /* If not using the newer R_PPC64_TLSGD/LD to mark | |
14933 | __tls_get_addr calls, we must trust that the call | |
14934 | stays with its arg setup insns, ie. that the next | |
14935 | reloc is the __tls_get_addr call associated with | |
14936 | the current reloc. Edit both insns. */ | |
14937 | if (input_section->has_tls_get_addr_call | |
14938 | && rel + 1 < relend | |
14939 | && branch_reloc_hash_match (input_bfd, rel + 1, | |
14940 | htab->tls_get_addr, | |
14941 | htab->tls_get_addr_fd)) | |
14942 | offset = rel[1].r_offset; | |
b86ac8e3 AM |
14943 | /* We read the low GOT_TLS (or TOC16) insn because we |
14944 | need to keep the destination reg. It may be | |
14945 | something other than the usual r3, and moved to r3 | |
14946 | before the call by intervening code. */ | |
95f0d0d2 | 14947 | insn1 = bfd_get_32 (input_bfd, |
b86ac8e3 | 14948 | contents + rel->r_offset - d_offset); |
102890f0 | 14949 | if ((tls_mask & tls_gd) != 0) |
411e1bfb | 14950 | { |
102890f0 | 14951 | /* IE */ |
b86ac8e3 | 14952 | insn1 &= (0x1f << 21) | (0x1f << 16); |
102890f0 AM |
14953 | insn1 |= 58 << 26; /* ld */ |
14954 | insn2 = 0x7c636a14; /* add 3,3,13 */ | |
727fc41e | 14955 | if (offset != (bfd_vma) -1) |
f58d5a2d | 14956 | rel[1].r_info = ELF64_R_INFO (STN_UNDEF, R_PPC64_NONE); |
102890f0 AM |
14957 | if ((tls_mask & TLS_EXPLICIT) == 0) |
14958 | r_type = (((r_type - (R_PPC64_GOT_TLSGD16 & 3)) & 3) | |
14959 | + R_PPC64_GOT_TPREL16_DS); | |
411e1bfb | 14960 | else |
102890f0 AM |
14961 | r_type += R_PPC64_TOC16_DS - R_PPC64_TOC16; |
14962 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
14963 | } | |
14964 | else | |
14965 | { | |
14966 | /* LE */ | |
b86ac8e3 AM |
14967 | insn1 &= 0x1f << 21; |
14968 | insn1 |= 0x3c0d0000; /* addis r,13,0 */ | |
102890f0 AM |
14969 | insn2 = 0x38630000; /* addi 3,3,0 */ |
14970 | if (tls_gd == 0) | |
951fd09b | 14971 | { |
102890f0 | 14972 | /* Was an LD reloc. */ |
1d483afe AM |
14973 | if (toc_symndx) |
14974 | sec = local_sections[toc_symndx]; | |
14975 | for (r_symndx = 0; | |
14976 | r_symndx < symtab_hdr->sh_info; | |
14977 | r_symndx++) | |
14978 | if (local_sections[r_symndx] == sec) | |
14979 | break; | |
14980 | if (r_symndx >= symtab_hdr->sh_info) | |
cf35638d | 14981 | r_symndx = STN_UNDEF; |
102890f0 | 14982 | rel->r_addend = htab->elf.tls_sec->vma + DTP_OFFSET; |
cf35638d | 14983 | if (r_symndx != STN_UNDEF) |
1d483afe AM |
14984 | rel->r_addend -= (local_syms[r_symndx].st_value |
14985 | + sec->output_offset | |
14986 | + sec->output_section->vma); | |
951fd09b | 14987 | } |
102890f0 | 14988 | else if (toc_symndx != 0) |
3a71aa26 AM |
14989 | { |
14990 | r_symndx = toc_symndx; | |
14991 | rel->r_addend = toc_addend; | |
14992 | } | |
102890f0 AM |
14993 | r_type = R_PPC64_TPREL16_HA; |
14994 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
727fc41e AM |
14995 | if (offset != (bfd_vma) -1) |
14996 | { | |
14997 | rel[1].r_info = ELF64_R_INFO (r_symndx, | |
14998 | R_PPC64_TPREL16_LO); | |
14999 | rel[1].r_offset = offset + d_offset; | |
15000 | rel[1].r_addend = rel->r_addend; | |
15001 | } | |
102890f0 | 15002 | } |
95f0d0d2 | 15003 | bfd_put_32 (input_bfd, insn1, |
3a71aa26 | 15004 | contents + rel->r_offset - d_offset); |
727fc41e | 15005 | if (offset != (bfd_vma) -1) |
b9f04fe0 | 15006 | bfd_put_32 (input_bfd, insn2, contents + offset); |
727fc41e AM |
15007 | if ((tls_mask & tls_gd) == 0 |
15008 | && (tls_gd == 0 || toc_symndx != 0)) | |
15009 | { | |
15010 | /* We changed the symbol. Start over in order | |
15011 | to get h, sym, sec etc. right. */ | |
c316a17c | 15012 | goto again; |
727fc41e AM |
15013 | } |
15014 | } | |
15015 | break; | |
15016 | ||
15017 | case R_PPC64_TLSGD: | |
37da22e5 | 15018 | if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_GD) == 0 |
675e2809 | 15019 | && rel + 1 < relend) |
727fc41e | 15020 | { |
b9f04fe0 | 15021 | unsigned int insn2; |
727fc41e AM |
15022 | bfd_vma offset = rel->r_offset; |
15023 | ||
23cedd1d AM |
15024 | if (is_plt_seq_reloc (ELF64_R_TYPE (rel[1].r_info))) |
15025 | { | |
15026 | bfd_put_32 (output_bfd, NOP, contents + offset); | |
15027 | rel[1].r_info = ELF64_R_INFO (STN_UNDEF, R_PPC64_NONE); | |
15028 | break; | |
15029 | } | |
15030 | ||
15031 | if (ELF64_R_TYPE (rel[1].r_info) == R_PPC64_PLTCALL) | |
15032 | bfd_put_32 (output_bfd, NOP, contents + offset + 4); | |
15033 | ||
727fc41e AM |
15034 | if ((tls_mask & TLS_TPRELGD) != 0) |
15035 | { | |
15036 | /* IE */ | |
15037 | r_type = R_PPC64_NONE; | |
15038 | insn2 = 0x7c636a14; /* add 3,3,13 */ | |
15039 | } | |
15040 | else | |
15041 | { | |
15042 | /* LE */ | |
15043 | if (toc_symndx != 0) | |
15044 | { | |
15045 | r_symndx = toc_symndx; | |
15046 | rel->r_addend = toc_addend; | |
15047 | } | |
15048 | r_type = R_PPC64_TPREL16_LO; | |
15049 | rel->r_offset = offset + d_offset; | |
15050 | insn2 = 0x38630000; /* addi 3,3,0 */ | |
15051 | } | |
15052 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
15053 | /* Zap the reloc on the _tls_get_addr call too. */ | |
15054 | BFD_ASSERT (offset == rel[1].r_offset); | |
f58d5a2d | 15055 | rel[1].r_info = ELF64_R_INFO (STN_UNDEF, R_PPC64_NONE); |
95f0d0d2 | 15056 | bfd_put_32 (input_bfd, insn2, contents + offset); |
727fc41e | 15057 | if ((tls_mask & TLS_TPRELGD) == 0 && toc_symndx != 0) |
c316a17c | 15058 | goto again; |
411e1bfb | 15059 | } |
411e1bfb AM |
15060 | break; |
15061 | ||
727fc41e | 15062 | case R_PPC64_TLSLD: |
37da22e5 | 15063 | if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_LD) == 0 |
675e2809 | 15064 | && rel + 1 < relend) |
727fc41e | 15065 | { |
b9f04fe0 | 15066 | unsigned int insn2; |
727fc41e AM |
15067 | bfd_vma offset = rel->r_offset; |
15068 | ||
23cedd1d AM |
15069 | if (is_plt_seq_reloc (ELF64_R_TYPE (rel[1].r_info))) |
15070 | { | |
15071 | bfd_put_32 (output_bfd, NOP, contents + offset); | |
15072 | rel[1].r_info = ELF64_R_INFO (STN_UNDEF, R_PPC64_NONE); | |
15073 | break; | |
15074 | } | |
15075 | ||
15076 | if (ELF64_R_TYPE (rel[1].r_info) == R_PPC64_PLTCALL) | |
15077 | bfd_put_32 (output_bfd, NOP, contents + offset + 4); | |
15078 | ||
727fc41e AM |
15079 | if (toc_symndx) |
15080 | sec = local_sections[toc_symndx]; | |
15081 | for (r_symndx = 0; | |
15082 | r_symndx < symtab_hdr->sh_info; | |
15083 | r_symndx++) | |
15084 | if (local_sections[r_symndx] == sec) | |
15085 | break; | |
15086 | if (r_symndx >= symtab_hdr->sh_info) | |
cf35638d | 15087 | r_symndx = STN_UNDEF; |
727fc41e | 15088 | rel->r_addend = htab->elf.tls_sec->vma + DTP_OFFSET; |
cf35638d | 15089 | if (r_symndx != STN_UNDEF) |
727fc41e AM |
15090 | rel->r_addend -= (local_syms[r_symndx].st_value |
15091 | + sec->output_offset | |
15092 | + sec->output_section->vma); | |
15093 | ||
15094 | r_type = R_PPC64_TPREL16_LO; | |
15095 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
15096 | rel->r_offset = offset + d_offset; | |
15097 | /* Zap the reloc on the _tls_get_addr call too. */ | |
15098 | BFD_ASSERT (offset == rel[1].r_offset); | |
f58d5a2d | 15099 | rel[1].r_info = ELF64_R_INFO (STN_UNDEF, R_PPC64_NONE); |
727fc41e | 15100 | insn2 = 0x38630000; /* addi 3,3,0 */ |
95f0d0d2 | 15101 | bfd_put_32 (input_bfd, insn2, contents + offset); |
c316a17c | 15102 | goto again; |
727fc41e AM |
15103 | } |
15104 | break; | |
15105 | ||
411e1bfb | 15106 | case R_PPC64_DTPMOD64: |
951fd09b AM |
15107 | if (rel + 1 < relend |
15108 | && rel[1].r_info == ELF64_R_INFO (r_symndx, R_PPC64_DTPREL64) | |
15109 | && rel[1].r_offset == rel->r_offset + 8) | |
411e1bfb | 15110 | { |
951fd09b AM |
15111 | if ((tls_mask & TLS_GD) == 0) |
15112 | { | |
15113 | rel[1].r_info = ELF64_R_INFO (r_symndx, R_PPC64_NONE); | |
15114 | if ((tls_mask & TLS_TPRELGD) != 0) | |
15115 | r_type = R_PPC64_TPREL64; | |
15116 | else | |
15117 | { | |
4ce794b7 | 15118 | bfd_put_64 (output_bfd, 1, contents + rel->r_offset); |
951fd09b AM |
15119 | r_type = R_PPC64_NONE; |
15120 | } | |
15121 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
15122 | } | |
15123 | } | |
15124 | else | |
15125 | { | |
15126 | if ((tls_mask & TLS_LD) == 0) | |
411e1bfb | 15127 | { |
4ce794b7 | 15128 | bfd_put_64 (output_bfd, 1, contents + rel->r_offset); |
411e1bfb | 15129 | r_type = R_PPC64_NONE; |
951fd09b | 15130 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); |
411e1bfb | 15131 | } |
411e1bfb AM |
15132 | } |
15133 | break; | |
15134 | ||
15135 | case R_PPC64_TPREL64: | |
951fd09b | 15136 | if ((tls_mask & TLS_TPREL) == 0) |
411e1bfb AM |
15137 | { |
15138 | r_type = R_PPC64_NONE; | |
15139 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
15140 | } | |
15141 | break; | |
52a82034 | 15142 | |
006589cf AM |
15143 | case R_PPC64_ENTRY: |
15144 | relocation = TOCstart + htab->sec_info[input_section->id].toc_off; | |
15145 | if (!bfd_link_pic (info) | |
15146 | && !info->traditional_format | |
15147 | && relocation + 0x80008000 <= 0xffffffff) | |
15148 | { | |
15149 | unsigned int insn1, insn2; | |
15150 | ||
15151 | insn1 = bfd_get_32 (input_bfd, contents + rel->r_offset); | |
15152 | insn2 = bfd_get_32 (input_bfd, contents + rel->r_offset + 4); | |
15153 | if ((insn1 & ~0xfffc) == LD_R2_0R12 | |
15154 | && insn2 == ADD_R2_R2_R12) | |
15155 | { | |
95f0d0d2 | 15156 | bfd_put_32 (input_bfd, |
006589cf AM |
15157 | LIS_R2 + PPC_HA (relocation), |
15158 | contents + rel->r_offset); | |
95f0d0d2 | 15159 | bfd_put_32 (input_bfd, |
006589cf AM |
15160 | ADDI_R2_R2 + PPC_LO (relocation), |
15161 | contents + rel->r_offset + 4); | |
15162 | } | |
15163 | } | |
15164 | else | |
15165 | { | |
15166 | relocation -= (rel->r_offset | |
15167 | + input_section->output_offset | |
15168 | + input_section->output_section->vma); | |
15169 | if (relocation + 0x80008000 <= 0xffffffff) | |
15170 | { | |
15171 | unsigned int insn1, insn2; | |
15172 | ||
15173 | insn1 = bfd_get_32 (input_bfd, contents + rel->r_offset); | |
15174 | insn2 = bfd_get_32 (input_bfd, contents + rel->r_offset + 4); | |
15175 | if ((insn1 & ~0xfffc) == LD_R2_0R12 | |
15176 | && insn2 == ADD_R2_R2_R12) | |
15177 | { | |
95f0d0d2 | 15178 | bfd_put_32 (input_bfd, |
006589cf AM |
15179 | ADDIS_R2_R12 + PPC_HA (relocation), |
15180 | contents + rel->r_offset); | |
95f0d0d2 | 15181 | bfd_put_32 (input_bfd, |
006589cf AM |
15182 | ADDI_R2_R2 + PPC_LO (relocation), |
15183 | contents + rel->r_offset + 4); | |
15184 | } | |
15185 | } | |
15186 | } | |
15187 | break; | |
15188 | ||
52a82034 AM |
15189 | case R_PPC64_REL16_HA: |
15190 | /* If we are generating a non-PIC executable, edit | |
15191 | . 0: addis 2,12,.TOC.-0b@ha | |
15192 | . addi 2,2,.TOC.-0b@l | |
15193 | used by ELFv2 global entry points to set up r2, to | |
15194 | . lis 2,.TOC.@ha | |
15195 | . addi 2,2,.TOC.@l | |
15196 | if .TOC. is in range. */ | |
0e1862bb | 15197 | if (!bfd_link_pic (info) |
810d4e75 | 15198 | && !info->traditional_format |
006589cf | 15199 | && !htab->opd_abi |
4f038ee5 | 15200 | && rel->r_addend == d_offset |
52a82034 AM |
15201 | && h != NULL && &h->elf == htab->elf.hgot |
15202 | && rel + 1 < relend | |
15203 | && rel[1].r_info == ELF64_R_INFO (r_symndx, R_PPC64_REL16_LO) | |
15204 | && rel[1].r_offset == rel->r_offset + 4 | |
15205 | && rel[1].r_addend == rel->r_addend + 4 | |
15206 | && relocation + 0x80008000 <= 0xffffffff) | |
15207 | { | |
15208 | unsigned int insn1, insn2; | |
15209 | bfd_vma offset = rel->r_offset - d_offset; | |
95f0d0d2 AM |
15210 | insn1 = bfd_get_32 (input_bfd, contents + offset); |
15211 | insn2 = bfd_get_32 (input_bfd, contents + offset + 4); | |
006589cf AM |
15212 | if ((insn1 & 0xffff0000) == ADDIS_R2_R12 |
15213 | && (insn2 & 0xffff0000) == ADDI_R2_R2) | |
52a82034 AM |
15214 | { |
15215 | r_type = R_PPC64_ADDR16_HA; | |
15216 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
15217 | rel->r_addend -= d_offset; | |
15218 | rel[1].r_info = ELF64_R_INFO (r_symndx, R_PPC64_ADDR16_LO); | |
15219 | rel[1].r_addend -= d_offset + 4; | |
95f0d0d2 | 15220 | bfd_put_32 (input_bfd, LIS_R2, contents + offset); |
52a82034 AM |
15221 | } |
15222 | } | |
15223 | break; | |
411e1bfb AM |
15224 | } |
15225 | ||
15226 | /* Handle other relocations that tweak non-addend part of insn. */ | |
86c76c7b | 15227 | insn = 0; |
b25116a9 AM |
15228 | max_br_offset = 1 << 25; |
15229 | addend = rel->r_addend; | |
bc30df16 | 15230 | reloc_dest = DEST_NORMAL; |
65f38f15 | 15231 | switch (r_type) |
5bd4f169 AM |
15232 | { |
15233 | default: | |
65f38f15 | 15234 | break; |
5bd4f169 | 15235 | |
3b421ab3 AM |
15236 | case R_PPC64_TOCSAVE: |
15237 | if (relocation + addend == (rel->r_offset | |
15238 | + input_section->output_offset | |
15239 | + input_section->output_section->vma) | |
15240 | && tocsave_find (htab, NO_INSERT, | |
15241 | &local_syms, rel, input_bfd)) | |
15242 | { | |
15243 | insn = bfd_get_32 (input_bfd, contents + rel->r_offset); | |
15244 | if (insn == NOP | |
15245 | || insn == CROR_151515 || insn == CROR_313131) | |
a078d95a AM |
15246 | bfd_put_32 (input_bfd, |
15247 | STD_R2_0R1 + STK_TOC (htab), | |
3b421ab3 AM |
15248 | contents + rel->r_offset); |
15249 | } | |
15250 | break; | |
15251 | ||
65f38f15 AM |
15252 | /* Branch taken prediction relocations. */ |
15253 | case R_PPC64_ADDR14_BRTAKEN: | |
15254 | case R_PPC64_REL14_BRTAKEN: | |
cedb70c5 | 15255 | insn = 0x01 << 21; /* 'y' or 't' bit, lowest bit of BO field. */ |
1a0670f3 | 15256 | /* Fall through. */ |
65f38f15 | 15257 | |
86c76c7b | 15258 | /* Branch not taken prediction relocations. */ |
65f38f15 AM |
15259 | case R_PPC64_ADDR14_BRNTAKEN: |
15260 | case R_PPC64_REL14_BRNTAKEN: | |
95f0d0d2 | 15261 | insn |= bfd_get_32 (input_bfd, |
411e1bfb | 15262 | contents + rel->r_offset) & ~(0x01 << 21); |
1a0670f3 | 15263 | /* Fall through. */ |
86c76c7b | 15264 | |
b25116a9 AM |
15265 | case R_PPC64_REL14: |
15266 | max_br_offset = 1 << 15; | |
1a0670f3 | 15267 | /* Fall through. */ |
5bd4f169 | 15268 | |
65f38f15 | 15269 | case R_PPC64_REL24: |
05d0e962 | 15270 | case R_PPC64_REL24_NOTOC: |
23cedd1d | 15271 | case R_PPC64_PLTCALL: |
ad8e1ba5 AM |
15272 | /* Calls to functions with a different TOC, such as calls to |
15273 | shared objects, need to alter the TOC pointer. This is | |
15274 | done using a linkage stub. A REL24 branching to these | |
15275 | linkage stubs needs to be followed by a nop, as the nop | |
15276 | will be replaced with an instruction to restore the TOC | |
15277 | base pointer. */ | |
8387904d | 15278 | fdh = h; |
b31867b6 AM |
15279 | if (h != NULL |
15280 | && h->oh != NULL | |
15281 | && h->oh->is_func_descriptor) | |
15282 | fdh = ppc_follow_link (h->oh); | |
31c76678 DK |
15283 | stub_entry = ppc_get_stub_entry (input_section, sec, fdh, &orig_rel, |
15284 | htab); | |
23cedd1d AM |
15285 | if (r_type == R_PPC64_PLTCALL |
15286 | && stub_entry != NULL | |
05d0e962 AM |
15287 | && stub_entry->stub_type >= ppc_stub_plt_call |
15288 | && stub_entry->stub_type <= ppc_stub_plt_call_both) | |
23cedd1d AM |
15289 | stub_entry = NULL; |
15290 | ||
6abec6bc | 15291 | if (stub_entry != NULL |
ad8e1ba5 | 15292 | && (stub_entry->stub_type == ppc_stub_plt_call |
794e51c0 | 15293 | || stub_entry->stub_type == ppc_stub_plt_call_r2save |
05d0e962 | 15294 | || stub_entry->stub_type == ppc_stub_plt_call_both |
ad8e1ba5 | 15295 | || stub_entry->stub_type == ppc_stub_plt_branch_r2off |
05d0e962 AM |
15296 | || stub_entry->stub_type == ppc_stub_plt_branch_both |
15297 | || stub_entry->stub_type == ppc_stub_long_branch_r2off | |
15298 | || stub_entry->stub_type == ppc_stub_long_branch_both)) | |
41bd81ab | 15299 | { |
b25116a9 | 15300 | bfd_boolean can_plt_call = FALSE; |
721956f4 | 15301 | |
6e1816be AM |
15302 | if (stub_entry->stub_type == ppc_stub_plt_call |
15303 | && !htab->opd_abi | |
15304 | && htab->params->plt_localentry0 != 0 | |
15305 | && is_elfv2_localentry0 (&h->elf)) | |
15306 | { | |
15307 | /* The function doesn't use or change r2. */ | |
15308 | can_plt_call = TRUE; | |
15309 | } | |
05d0e962 AM |
15310 | else if (r_type == R_PPC64_REL24_NOTOC) |
15311 | { | |
15312 | /* NOTOC calls don't need to restore r2. */ | |
15313 | can_plt_call = TRUE; | |
15314 | } | |
6e1816be | 15315 | |
f378ab09 | 15316 | /* All of these stubs may modify r2, so there must be a |
ba8ca3e7 AM |
15317 | branch and link followed by a nop. The nop is |
15318 | replaced by an insn to restore r2. */ | |
6e1816be | 15319 | else if (rel->r_offset + 8 <= input_section->size) |
41bd81ab | 15320 | { |
ba8ca3e7 AM |
15321 | unsigned long br; |
15322 | ||
15323 | br = bfd_get_32 (input_bfd, | |
15324 | contents + rel->r_offset); | |
15325 | if ((br & 1) != 0) | |
41bd81ab | 15326 | { |
ba8ca3e7 AM |
15327 | unsigned long nop; |
15328 | ||
15329 | nop = bfd_get_32 (input_bfd, | |
15330 | contents + rel->r_offset + 4); | |
23cedd1d AM |
15331 | if (nop == LD_R2_0R1 + STK_TOC (htab)) |
15332 | can_plt_call = TRUE; | |
15333 | else if (nop == NOP | |
15334 | || nop == CROR_151515 | |
15335 | || nop == CROR_313131) | |
a7f2871e | 15336 | { |
ba8ca3e7 AM |
15337 | if (h != NULL |
15338 | && (h == htab->tls_get_addr_fd | |
15339 | || h == htab->tls_get_addr) | |
7c9cf415 | 15340 | && htab->params->tls_get_addr_opt) |
ba8ca3e7 AM |
15341 | { |
15342 | /* Special stub used, leave nop alone. */ | |
15343 | } | |
15344 | else | |
a078d95a AM |
15345 | bfd_put_32 (input_bfd, |
15346 | LD_R2_0R1 + STK_TOC (htab), | |
ba8ca3e7 AM |
15347 | contents + rel->r_offset + 4); |
15348 | can_plt_call = TRUE; | |
a7f2871e | 15349 | } |
41bd81ab | 15350 | } |
5bd4f169 | 15351 | } |
721956f4 | 15352 | |
ba8ca3e7 | 15353 | if (!can_plt_call && h != NULL) |
721956f4 | 15354 | { |
ba8ca3e7 AM |
15355 | const char *name = h->elf.root.root.string; |
15356 | ||
15357 | if (*name == '.') | |
15358 | ++name; | |
15359 | ||
15360 | if (strncmp (name, "__libc_start_main", 17) == 0 | |
15361 | && (name[17] == 0 || name[17] == '@')) | |
6ab189d5 | 15362 | { |
ba8ca3e7 AM |
15363 | /* Allow crt1 branch to go via a toc adjusting |
15364 | stub. Other calls that never return could do | |
15365 | the same, if we could detect such. */ | |
b25116a9 | 15366 | can_plt_call = TRUE; |
6ab189d5 | 15367 | } |
ba8ca3e7 AM |
15368 | } |
15369 | ||
15370 | if (!can_plt_call) | |
15371 | { | |
15372 | /* g++ as of 20130507 emits self-calls without a | |
15373 | following nop. This is arguably wrong since we | |
15374 | have conflicting information. On the one hand a | |
15375 | global symbol and on the other a local call | |
15376 | sequence, but don't error for this special case. | |
15377 | It isn't possible to cheaply verify we have | |
15378 | exactly such a call. Allow all calls to the same | |
15379 | section. */ | |
15380 | asection *code_sec = sec; | |
15381 | ||
15382 | if (get_opd_info (sec) != NULL) | |
ad8e1ba5 | 15383 | { |
ba8ca3e7 AM |
15384 | bfd_vma off = (relocation + addend |
15385 | - sec->output_section->vma | |
15386 | - sec->output_offset); | |
bc30df16 | 15387 | |
ba8ca3e7 | 15388 | opd_entry_value (sec, off, &code_sec, NULL, FALSE); |
ad8e1ba5 | 15389 | } |
ba8ca3e7 AM |
15390 | if (code_sec == input_section) |
15391 | can_plt_call = TRUE; | |
15392 | } | |
15393 | ||
15394 | if (!can_plt_call) | |
15395 | { | |
05d0e962 AM |
15396 | if (stub_entry->stub_type >= ppc_stub_plt_call |
15397 | && stub_entry->stub_type <= ppc_stub_plt_call_both) | |
4805fc55 | 15398 | info->callbacks->einfo |
695344c0 | 15399 | /* xgettext:c-format */ |
c1c8c1ef | 15400 | (_("%H: call to `%pT' lacks nop, can't restore toc; " |
4805fc55 AM |
15401 | "recompile with -fPIC\n"), |
15402 | input_bfd, input_section, rel->r_offset, sym_name); | |
15403 | else | |
15404 | info->callbacks->einfo | |
695344c0 | 15405 | /* xgettext:c-format */ |
c1c8c1ef | 15406 | (_("%H: call to `%pT' lacks nop, can't restore toc; " |
4805fc55 AM |
15407 | "(-mcmodel=small toc adjust stub)\n"), |
15408 | input_bfd, input_section, rel->r_offset, sym_name); | |
ba8ca3e7 AM |
15409 | |
15410 | bfd_set_error (bfd_error_bad_value); | |
15411 | ret = FALSE; | |
721956f4 AM |
15412 | } |
15413 | ||
b25116a9 | 15414 | if (can_plt_call |
05d0e962 AM |
15415 | && stub_entry->stub_type >= ppc_stub_plt_call |
15416 | && stub_entry->stub_type <= ppc_stub_plt_call_both) | |
b25116a9 AM |
15417 | unresolved_reloc = FALSE; |
15418 | } | |
15419 | ||
6abec6bc AM |
15420 | if ((stub_entry == NULL |
15421 | || stub_entry->stub_type == ppc_stub_long_branch | |
15422 | || stub_entry->stub_type == ppc_stub_plt_branch) | |
8387904d AM |
15423 | && get_opd_info (sec) != NULL) |
15424 | { | |
15425 | /* The branch destination is the value of the opd entry. */ | |
4cc603a5 AM |
15426 | bfd_vma off = (relocation + addend |
15427 | - sec->output_section->vma | |
15428 | - sec->output_offset); | |
aef36ac1 | 15429 | bfd_vma dest = opd_entry_value (sec, off, NULL, NULL, FALSE); |
8387904d AM |
15430 | if (dest != (bfd_vma) -1) |
15431 | { | |
15432 | relocation = dest; | |
15433 | addend = 0; | |
bc30df16 | 15434 | reloc_dest = DEST_OPD; |
8387904d AM |
15435 | } |
15436 | } | |
15437 | ||
b25116a9 AM |
15438 | /* If the branch is out of reach we ought to have a long |
15439 | branch stub. */ | |
15440 | from = (rel->r_offset | |
15441 | + input_section->output_offset | |
15442 | + input_section->output_section->vma); | |
15443 | ||
6911b7dc AM |
15444 | relocation += PPC64_LOCAL_ENTRY_OFFSET (fdh |
15445 | ? fdh->elf.other | |
15446 | : sym->st_other); | |
15447 | ||
6abec6bc AM |
15448 | if (stub_entry != NULL |
15449 | && (stub_entry->stub_type == ppc_stub_long_branch | |
15450 | || stub_entry->stub_type == ppc_stub_plt_branch) | |
15451 | && (r_type == R_PPC64_ADDR14_BRTAKEN | |
15452 | || r_type == R_PPC64_ADDR14_BRNTAKEN | |
15453 | || (relocation + addend - from + max_br_offset | |
15454 | < 2 * max_br_offset))) | |
15455 | /* Don't use the stub if this branch is in range. */ | |
15456 | stub_entry = NULL; | |
b25116a9 | 15457 | |
05d0e962 AM |
15458 | if (stub_entry != NULL |
15459 | && (stub_entry->stub_type == ppc_stub_long_branch_notoc | |
15460 | || stub_entry->stub_type == ppc_stub_long_branch_both | |
15461 | || stub_entry->stub_type == ppc_stub_plt_branch_notoc | |
15462 | || stub_entry->stub_type == ppc_stub_plt_branch_both) | |
15463 | && (r_type != R_PPC64_REL24_NOTOC | |
15464 | || ((fdh ? fdh->elf.other : sym->st_other) | |
15465 | & STO_PPC64_LOCAL_MASK) == 1 << STO_PPC64_LOCAL_BIT) | |
15466 | && (relocation + addend - from + max_br_offset | |
15467 | < 2 * max_br_offset)) | |
15468 | stub_entry = NULL; | |
15469 | ||
15470 | if (stub_entry != NULL | |
15471 | && (stub_entry->stub_type == ppc_stub_long_branch_r2off | |
15472 | || stub_entry->stub_type == ppc_stub_long_branch_both | |
15473 | || stub_entry->stub_type == ppc_stub_plt_branch_r2off | |
15474 | || stub_entry->stub_type == ppc_stub_plt_branch_both) | |
15475 | && r_type == R_PPC64_REL24_NOTOC | |
15476 | && (relocation + addend - from + max_br_offset | |
15477 | < 2 * max_br_offset)) | |
15478 | stub_entry = NULL; | |
15479 | ||
b25116a9 AM |
15480 | if (stub_entry != NULL) |
15481 | { | |
15482 | /* Munge up the value and addend so that we call the stub | |
15483 | rather than the procedure directly. */ | |
a4b6fadd AM |
15484 | asection *stub_sec = stub_entry->group->stub_sec; |
15485 | ||
15486 | if (stub_entry->stub_type == ppc_stub_save_res) | |
15487 | relocation += (stub_sec->output_offset | |
15488 | + stub_sec->output_section->vma | |
15489 | + stub_sec->size - htab->sfpr->size | |
15490 | - htab->sfpr->output_offset | |
15491 | - htab->sfpr->output_section->vma); | |
15492 | else | |
15493 | relocation = (stub_entry->stub_offset | |
15494 | + stub_sec->output_offset | |
15495 | + stub_sec->output_section->vma); | |
b25116a9 | 15496 | addend = 0; |
bc30df16 | 15497 | reloc_dest = DEST_STUB; |
3b421ab3 | 15498 | |
05d0e962 AM |
15499 | if (((stub_entry->stub_type == ppc_stub_plt_call |
15500 | && ALWAYS_EMIT_R2SAVE) | |
15501 | || stub_entry->stub_type == ppc_stub_plt_call_r2save | |
15502 | || stub_entry->stub_type == ppc_stub_plt_call_both) | |
e81b4c93 AM |
15503 | && !(h != NULL |
15504 | && (h == htab->tls_get_addr_fd | |
15505 | || h == htab->tls_get_addr) | |
15506 | && htab->params->tls_get_addr_opt) | |
3b421ab3 AM |
15507 | && rel + 1 < relend |
15508 | && rel[1].r_offset == rel->r_offset + 4 | |
15509 | && ELF64_R_TYPE (rel[1].r_info) == R_PPC64_TOCSAVE) | |
15510 | relocation += 4; | |
05d0e962 AM |
15511 | else if ((stub_entry->stub_type == ppc_stub_long_branch_both |
15512 | || stub_entry->stub_type == ppc_stub_plt_branch_both | |
15513 | || stub_entry->stub_type == ppc_stub_plt_call_both) | |
15514 | && r_type == R_PPC64_REL24_NOTOC) | |
15515 | relocation += 4; | |
b25116a9 AM |
15516 | } |
15517 | ||
15518 | if (insn != 0) | |
15519 | { | |
794e51c0 | 15520 | if (is_isa_v2) |
721956f4 | 15521 | { |
b25116a9 AM |
15522 | /* Set 'a' bit. This is 0b00010 in BO field for branch |
15523 | on CR(BI) insns (BO == 001at or 011at), and 0b01000 | |
15524 | for branch on CTR insns (BO == 1a00t or 1a01t). */ | |
15525 | if ((insn & (0x14 << 21)) == (0x04 << 21)) | |
15526 | insn |= 0x02 << 21; | |
15527 | else if ((insn & (0x14 << 21)) == (0x10 << 21)) | |
15528 | insn |= 0x08 << 21; | |
15529 | else | |
15530 | break; | |
15531 | } | |
15532 | else | |
15533 | { | |
15534 | /* Invert 'y' bit if not the default. */ | |
4cc603a5 | 15535 | if ((bfd_signed_vma) (relocation + addend - from) < 0) |
b25116a9 | 15536 | insn ^= 0x01 << 21; |
721956f4 | 15537 | } |
b25116a9 | 15538 | |
95f0d0d2 | 15539 | bfd_put_32 (input_bfd, insn, contents + rel->r_offset); |
5bd4f169 | 15540 | } |
e86ce104 | 15541 | |
06da1e8e AM |
15542 | /* NOP out calls to undefined weak functions. |
15543 | We can thus call a weak function without first | |
15544 | checking whether the function is defined. */ | |
b25116a9 | 15545 | else if (h != NULL |
039b3fef | 15546 | && h->elf.root.type == bfd_link_hash_undefweak |
766bc656 | 15547 | && h->elf.dynindx == -1 |
05d0e962 AM |
15548 | && (r_type == R_PPC64_REL24 |
15549 | || r_type == R_PPC64_REL24_NOTOC) | |
b25116a9 | 15550 | && relocation == 0 |
4cc603a5 | 15551 | && addend == 0) |
e86ce104 | 15552 | { |
95f0d0d2 | 15553 | bfd_put_32 (input_bfd, NOP, contents + rel->r_offset); |
c316a17c | 15554 | goto copy_reloc; |
e86ce104 | 15555 | } |
65f38f15 AM |
15556 | break; |
15557 | } | |
5bd4f169 | 15558 | |
65f38f15 | 15559 | /* Set `addend'. */ |
411e1bfb | 15560 | tls_type = 0; |
23cedd1d | 15561 | save_unresolved_reloc = unresolved_reloc; |
65f38f15 AM |
15562 | switch (r_type) |
15563 | { | |
15564 | default: | |
cf97bcb0 AM |
15565 | /* xgettext:c-format */ |
15566 | _bfd_error_handler (_("%pB: %s unsupported"), | |
15567 | input_bfd, ppc64_elf_howto_table[r_type]->name); | |
5bd4f169 | 15568 | |
65f38f15 | 15569 | bfd_set_error (bfd_error_bad_value); |
b34976b6 | 15570 | ret = FALSE; |
c316a17c | 15571 | goto copy_reloc; |
5bd4f169 | 15572 | |
65f38f15 | 15573 | case R_PPC64_NONE: |
411e1bfb | 15574 | case R_PPC64_TLS: |
727fc41e AM |
15575 | case R_PPC64_TLSGD: |
15576 | case R_PPC64_TLSLD: | |
3b421ab3 | 15577 | case R_PPC64_TOCSAVE: |
04c9666a AM |
15578 | case R_PPC64_GNU_VTINHERIT: |
15579 | case R_PPC64_GNU_VTENTRY: | |
006589cf | 15580 | case R_PPC64_ENTRY: |
c316a17c | 15581 | goto copy_reloc; |
5bd4f169 AM |
15582 | |
15583 | /* GOT16 relocations. Like an ADDR16 using the symbol's | |
15584 | address in the GOT as relocation value instead of the | |
411e1bfb | 15585 | symbol's value itself. Also, create a GOT entry for the |
5bd4f169 | 15586 | symbol and put the symbol value there. */ |
411e1bfb AM |
15587 | case R_PPC64_GOT_TLSGD16: |
15588 | case R_PPC64_GOT_TLSGD16_LO: | |
15589 | case R_PPC64_GOT_TLSGD16_HI: | |
15590 | case R_PPC64_GOT_TLSGD16_HA: | |
951fd09b | 15591 | tls_type = TLS_TLS | TLS_GD; |
411e1bfb AM |
15592 | goto dogot; |
15593 | ||
15594 | case R_PPC64_GOT_TLSLD16: | |
15595 | case R_PPC64_GOT_TLSLD16_LO: | |
15596 | case R_PPC64_GOT_TLSLD16_HI: | |
15597 | case R_PPC64_GOT_TLSLD16_HA: | |
951fd09b | 15598 | tls_type = TLS_TLS | TLS_LD; |
411e1bfb AM |
15599 | goto dogot; |
15600 | ||
15601 | case R_PPC64_GOT_TPREL16_DS: | |
15602 | case R_PPC64_GOT_TPREL16_LO_DS: | |
15603 | case R_PPC64_GOT_TPREL16_HI: | |
15604 | case R_PPC64_GOT_TPREL16_HA: | |
15605 | tls_type = TLS_TLS | TLS_TPREL; | |
15606 | goto dogot; | |
15607 | ||
15608 | case R_PPC64_GOT_DTPREL16_DS: | |
15609 | case R_PPC64_GOT_DTPREL16_LO_DS: | |
15610 | case R_PPC64_GOT_DTPREL16_HI: | |
15611 | case R_PPC64_GOT_DTPREL16_HA: | |
15612 | tls_type = TLS_TLS | TLS_DTPREL; | |
15613 | goto dogot; | |
15614 | ||
65f38f15 AM |
15615 | case R_PPC64_GOT16: |
15616 | case R_PPC64_GOT16_LO: | |
15617 | case R_PPC64_GOT16_HI: | |
15618 | case R_PPC64_GOT16_HA: | |
15619 | case R_PPC64_GOT16_DS: | |
15620 | case R_PPC64_GOT16_LO_DS: | |
411e1bfb | 15621 | dogot: |
5bd4f169 AM |
15622 | { |
15623 | /* Relocation is to the entry for this symbol in the global | |
15624 | offset table. */ | |
e717da7e | 15625 | asection *got; |
d881513a | 15626 | bfd_vma *offp; |
5bd4f169 | 15627 | bfd_vma off; |
d881513a | 15628 | unsigned long indx = 0; |
927be08e | 15629 | struct got_entry *ent; |
65f38f15 | 15630 | |
d881513a AM |
15631 | if (tls_type == (TLS_TLS | TLS_LD) |
15632 | && (h == NULL | |
f5385ebf | 15633 | || !h->elf.def_dynamic)) |
927be08e | 15634 | ent = ppc64_tlsld_got (input_bfd); |
411e1bfb | 15635 | else |
5bd4f169 | 15636 | { |
d881513a AM |
15637 | if (h != NULL) |
15638 | { | |
f0158f44 AM |
15639 | if (!htab->elf.dynamic_sections_created |
15640 | || h->elf.dynindx == -1 | |
15641 | || SYMBOL_REFERENCES_LOCAL (info, &h->elf) | |
21d68fcd | 15642 | || UNDEFWEAK_NO_DYNAMIC_RELOC (info, &h->elf)) |
d881513a AM |
15643 | /* This is actually a static link, or it is a |
15644 | -Bsymbolic link and the symbol is defined | |
15645 | locally, or the symbol was forced to be local | |
15646 | because of a version file. */ | |
15647 | ; | |
15648 | else | |
15649 | { | |
039b3fef | 15650 | indx = h->elf.dynindx; |
d881513a AM |
15651 | unresolved_reloc = FALSE; |
15652 | } | |
039b3fef | 15653 | ent = h->elf.got.glist; |
d881513a | 15654 | } |
411e1bfb | 15655 | else |
5bd4f169 | 15656 | { |
d881513a AM |
15657 | if (local_got_ents == NULL) |
15658 | abort (); | |
15659 | ent = local_got_ents[r_symndx]; | |
5bd4f169 | 15660 | } |
d881513a AM |
15661 | |
15662 | for (; ent != NULL; ent = ent->next) | |
31c76678 | 15663 | if (ent->addend == orig_rel.r_addend |
e717da7e | 15664 | && ent->owner == input_bfd |
d881513a AM |
15665 | && ent->tls_type == tls_type) |
15666 | break; | |
5bd4f169 | 15667 | } |
411e1bfb | 15668 | |
927be08e AM |
15669 | if (ent == NULL) |
15670 | abort (); | |
15671 | if (ent->is_indirect) | |
15672 | ent = ent->got.ent; | |
15673 | offp = &ent->got.offset; | |
15674 | got = ppc64_elf_tdata (ent->owner)->got; | |
e717da7e AM |
15675 | if (got == NULL) |
15676 | abort (); | |
15677 | ||
411e1bfb AM |
15678 | /* The offset must always be a multiple of 8. We use the |
15679 | least significant bit to record whether we have already | |
15680 | processed this entry. */ | |
d881513a | 15681 | off = *offp; |
411e1bfb AM |
15682 | if ((off & 1) != 0) |
15683 | off &= ~1; | |
5bd4f169 AM |
15684 | else |
15685 | { | |
411e1bfb AM |
15686 | /* Generate relocs for the dynamic linker, except in |
15687 | the case of TLSLD where we'll use one entry per | |
15688 | module. */ | |
25f23106 AM |
15689 | asection *relgot; |
15690 | bfd_boolean ifunc; | |
e717da7e | 15691 | |
d881513a | 15692 | *offp = off | 1; |
25f23106 AM |
15693 | relgot = NULL; |
15694 | ifunc = (h != NULL | |
15695 | ? h->elf.type == STT_GNU_IFUNC | |
15696 | : ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC); | |
19e08130 | 15697 | if (ifunc) |
82e66161 AM |
15698 | { |
15699 | relgot = htab->elf.irelplt; | |
15700 | if (indx == 0) | |
15701 | htab->local_ifunc_resolver = 1; | |
15702 | else if (is_static_defined (&h->elf)) | |
15703 | htab->maybe_local_ifunc_resolver = 1; | |
15704 | } | |
f0158f44 AM |
15705 | else if (indx != 0 |
15706 | || (bfd_link_pic (info) | |
15707 | && (h == NULL | |
21d68fcd | 15708 | || !UNDEFWEAK_NO_DYNAMIC_RELOC (info, &h->elf) |
f0158f44 | 15709 | || (tls_type == (TLS_TLS | TLS_LD) |
f15d0b54 AM |
15710 | && !h->elf.def_dynamic)) |
15711 | && !(tls_type == (TLS_TLS | TLS_TPREL) | |
15712 | && bfd_link_executable (info) | |
15713 | && SYMBOL_REFERENCES_LOCAL (info, &h->elf)))) | |
19e08130 | 15714 | relgot = ppc64_elf_tdata (ent->owner)->relgot; |
25f23106 | 15715 | if (relgot != NULL) |
5bd4f169 | 15716 | { |
e717da7e AM |
15717 | outrel.r_offset = (got->output_section->vma |
15718 | + got->output_offset | |
411e1bfb | 15719 | + off); |
4cc603a5 | 15720 | outrel.r_addend = addend; |
d881513a | 15721 | if (tls_type & (TLS_LD | TLS_GD)) |
5bd4f169 | 15722 | { |
411e1bfb | 15723 | outrel.r_addend = 0; |
e515b051 | 15724 | outrel.r_info = ELF64_R_INFO (indx, R_PPC64_DTPMOD64); |
d881513a AM |
15725 | if (tls_type == (TLS_TLS | TLS_GD)) |
15726 | { | |
e717da7e AM |
15727 | loc = relgot->contents; |
15728 | loc += (relgot->reloc_count++ | |
d881513a AM |
15729 | * sizeof (Elf64_External_Rela)); |
15730 | bfd_elf64_swap_reloca_out (output_bfd, | |
15731 | &outrel, loc); | |
e515b051 | 15732 | outrel.r_offset += 8; |
4cc603a5 | 15733 | outrel.r_addend = addend; |
d881513a AM |
15734 | outrel.r_info |
15735 | = ELF64_R_INFO (indx, R_PPC64_DTPREL64); | |
d881513a | 15736 | } |
411e1bfb | 15737 | } |
951fd09b | 15738 | else if (tls_type == (TLS_TLS | TLS_DTPREL)) |
411e1bfb | 15739 | outrel.r_info = ELF64_R_INFO (indx, R_PPC64_DTPREL64); |
951fd09b | 15740 | else if (tls_type == (TLS_TLS | TLS_TPREL)) |
411e1bfb | 15741 | outrel.r_info = ELF64_R_INFO (indx, R_PPC64_TPREL64); |
25f23106 AM |
15742 | else if (indx != 0) |
15743 | outrel.r_info = ELF64_R_INFO (indx, R_PPC64_GLOB_DAT); | |
15744 | else | |
81407a69 | 15745 | { |
25f23106 AM |
15746 | if (ifunc) |
15747 | outrel.r_info = ELF64_R_INFO (0, R_PPC64_IRELATIVE); | |
15748 | else | |
15749 | outrel.r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE); | |
81407a69 AM |
15750 | |
15751 | /* Write the .got section contents for the sake | |
15752 | of prelink. */ | |
e717da7e | 15753 | loc = got->contents + off; |
23fbd6fa JJ |
15754 | bfd_put_64 (output_bfd, outrel.r_addend + relocation, |
15755 | loc); | |
81407a69 | 15756 | } |
81407a69 AM |
15757 | |
15758 | if (indx == 0 && tls_type != (TLS_TLS | TLS_LD)) | |
e515b051 AM |
15759 | { |
15760 | outrel.r_addend += relocation; | |
15761 | if (tls_type & (TLS_GD | TLS_DTPREL | TLS_TPREL)) | |
989f9879 AM |
15762 | { |
15763 | if (htab->elf.tls_sec == NULL) | |
15764 | outrel.r_addend = 0; | |
15765 | else | |
15766 | outrel.r_addend -= htab->elf.tls_sec->vma; | |
15767 | } | |
e515b051 | 15768 | } |
e717da7e AM |
15769 | loc = relgot->contents; |
15770 | loc += (relgot->reloc_count++ | |
411e1bfb AM |
15771 | * sizeof (Elf64_External_Rela)); |
15772 | bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc); | |
15773 | } | |
15774 | ||
ad8e1ba5 | 15775 | /* Init the .got section contents here if we're not |
81407a69 | 15776 | emitting a reloc. */ |
d881513a | 15777 | else |
411e1bfb | 15778 | { |
4cc603a5 | 15779 | relocation += addend; |
f0158f44 | 15780 | if (tls_type != 0) |
411e1bfb | 15781 | { |
989f9879 AM |
15782 | if (htab->elf.tls_sec == NULL) |
15783 | relocation = 0; | |
15784 | else | |
15785 | { | |
f0158f44 AM |
15786 | if (tls_type & TLS_LD) |
15787 | relocation = 0; | |
15788 | else | |
15789 | relocation -= htab->elf.tls_sec->vma + DTP_OFFSET; | |
676ee2b5 | 15790 | if (tls_type & TLS_TPREL) |
989f9879 AM |
15791 | relocation += DTP_OFFSET - TP_OFFSET; |
15792 | } | |
5bd4f169 | 15793 | |
f0158f44 | 15794 | if (tls_type & (TLS_GD | TLS_LD)) |
7b609f53 AM |
15795 | { |
15796 | bfd_put_64 (output_bfd, relocation, | |
e717da7e | 15797 | got->contents + off + 8); |
676ee2b5 | 15798 | relocation = 1; |
7b609f53 | 15799 | } |
411e1bfb AM |
15800 | } |
15801 | bfd_put_64 (output_bfd, relocation, | |
e717da7e | 15802 | got->contents + off); |
5bd4f169 AM |
15803 | } |
15804 | } | |
15805 | ||
65f38f15 AM |
15806 | if (off >= (bfd_vma) -2) |
15807 | abort (); | |
15808 | ||
bf102f86 | 15809 | relocation = got->output_section->vma + got->output_offset + off; |
6f20ed8a | 15810 | addend = -(TOCstart + htab->sec_info[input_section->id].toc_off); |
5bd4f169 | 15811 | } |
65f38f15 AM |
15812 | break; |
15813 | ||
15814 | case R_PPC64_PLT16_HA: | |
15815 | case R_PPC64_PLT16_HI: | |
15816 | case R_PPC64_PLT16_LO: | |
08be3224 | 15817 | case R_PPC64_PLT16_LO_DS: |
65f38f15 AM |
15818 | case R_PPC64_PLT32: |
15819 | case R_PPC64_PLT64: | |
23cedd1d AM |
15820 | case R_PPC64_PLTSEQ: |
15821 | case R_PPC64_PLTCALL: | |
65f38f15 AM |
15822 | /* Relocation is to the entry for this symbol in the |
15823 | procedure linkage table. */ | |
23cedd1d | 15824 | unresolved_reloc = TRUE; |
cbf95972 AM |
15825 | { |
15826 | struct plt_entry **plt_list = NULL; | |
15827 | if (h != NULL) | |
15828 | plt_list = &h->elf.plt.plist; | |
15829 | else if (local_got_ents != NULL) | |
15830 | { | |
15831 | struct plt_entry **local_plt = (struct plt_entry **) | |
15832 | (local_got_ents + symtab_hdr->sh_info); | |
2d7ad24e | 15833 | plt_list = local_plt + r_symndx; |
cbf95972 AM |
15834 | } |
15835 | if (plt_list) | |
15836 | { | |
15837 | struct plt_entry *ent; | |
65f38f15 | 15838 | |
cbf95972 AM |
15839 | for (ent = *plt_list; ent != NULL; ent = ent->next) |
15840 | if (ent->plt.offset != (bfd_vma) -1 | |
15841 | && ent->addend == orig_rel.r_addend) | |
15842 | { | |
15843 | asection *plt; | |
08be3224 | 15844 | bfd_vma got; |
cbf95972 AM |
15845 | |
15846 | plt = htab->elf.splt; | |
15847 | if (!htab->elf.dynamic_sections_created | |
15848 | || h == NULL | |
15849 | || h->elf.dynindx == -1) | |
2d7ad24e AM |
15850 | { |
15851 | if (h != NULL | |
15852 | ? h->elf.type == STT_GNU_IFUNC | |
15853 | : ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC) | |
15854 | plt = htab->elf.iplt; | |
15855 | else | |
15856 | plt = htab->pltlocal; | |
15857 | } | |
15858 | relocation = (plt->output_section->vma | |
15859 | + plt->output_offset | |
15860 | + ent->plt.offset); | |
08be3224 | 15861 | if (r_type == R_PPC64_PLT16_HA |
2cdcc330 AM |
15862 | || r_type == R_PPC64_PLT16_HI |
15863 | || r_type == R_PPC64_PLT16_LO | |
15864 | || r_type == R_PPC64_PLT16_LO_DS) | |
08be3224 AM |
15865 | { |
15866 | got = (elf_gp (output_bfd) | |
15867 | + htab->sec_info[input_section->id].toc_off); | |
15868 | relocation -= got; | |
15869 | } | |
cbf95972 AM |
15870 | addend = 0; |
15871 | unresolved_reloc = FALSE; | |
15872 | break; | |
15873 | } | |
15874 | } | |
15875 | } | |
65f38f15 | 15876 | break; |
5bd4f169 | 15877 | |
0b13192e AM |
15878 | case R_PPC64_TOC: |
15879 | /* Relocation value is TOC base. */ | |
15880 | relocation = TOCstart; | |
cf35638d | 15881 | if (r_symndx == STN_UNDEF) |
6f20ed8a | 15882 | relocation += htab->sec_info[input_section->id].toc_off; |
8517fae7 AM |
15883 | else if (unresolved_reloc) |
15884 | ; | |
6f20ed8a AM |
15885 | else if (sec != NULL && sec->id < htab->sec_info_arr_size) |
15886 | relocation += htab->sec_info[sec->id].toc_off; | |
0b13192e AM |
15887 | else |
15888 | unresolved_reloc = TRUE; | |
ab96bf03 | 15889 | goto dodyn; |
0b13192e | 15890 | |
5bd4f169 AM |
15891 | /* TOC16 relocs. We want the offset relative to the TOC base, |
15892 | which is the address of the start of the TOC plus 0x8000. | |
15893 | The TOC consists of sections .got, .toc, .tocbss, and .plt, | |
15894 | in this order. */ | |
65f38f15 AM |
15895 | case R_PPC64_TOC16: |
15896 | case R_PPC64_TOC16_LO: | |
15897 | case R_PPC64_TOC16_HI: | |
15898 | case R_PPC64_TOC16_DS: | |
15899 | case R_PPC64_TOC16_LO_DS: | |
15900 | case R_PPC64_TOC16_HA: | |
6f20ed8a | 15901 | addend -= TOCstart + htab->sec_info[input_section->id].toc_off; |
5bd4f169 AM |
15902 | break; |
15903 | ||
15904 | /* Relocate against the beginning of the section. */ | |
65f38f15 AM |
15905 | case R_PPC64_SECTOFF: |
15906 | case R_PPC64_SECTOFF_LO: | |
15907 | case R_PPC64_SECTOFF_HI: | |
15908 | case R_PPC64_SECTOFF_DS: | |
15909 | case R_PPC64_SECTOFF_LO_DS: | |
15910 | case R_PPC64_SECTOFF_HA: | |
4ce794b7 | 15911 | if (sec != NULL) |
65f38f15 | 15912 | addend -= sec->output_section->vma; |
5bd4f169 AM |
15913 | break; |
15914 | ||
25f23106 AM |
15915 | case R_PPC64_REL16: |
15916 | case R_PPC64_REL16_LO: | |
15917 | case R_PPC64_REL16_HI: | |
15918 | case R_PPC64_REL16_HA: | |
a680de9a | 15919 | case R_PPC64_REL16DX_HA: |
25f23106 AM |
15920 | break; |
15921 | ||
721956f4 AM |
15922 | case R_PPC64_REL14: |
15923 | case R_PPC64_REL14_BRNTAKEN: | |
15924 | case R_PPC64_REL14_BRTAKEN: | |
5d1634d7 | 15925 | case R_PPC64_REL24: |
05d0e962 | 15926 | case R_PPC64_REL24_NOTOC: |
5d1634d7 AM |
15927 | break; |
15928 | ||
411e1bfb AM |
15929 | case R_PPC64_TPREL16: |
15930 | case R_PPC64_TPREL16_LO: | |
15931 | case R_PPC64_TPREL16_HI: | |
15932 | case R_PPC64_TPREL16_HA: | |
15933 | case R_PPC64_TPREL16_DS: | |
15934 | case R_PPC64_TPREL16_LO_DS: | |
f9c6b907 AM |
15935 | case R_PPC64_TPREL16_HIGH: |
15936 | case R_PPC64_TPREL16_HIGHA: | |
411e1bfb AM |
15937 | case R_PPC64_TPREL16_HIGHER: |
15938 | case R_PPC64_TPREL16_HIGHERA: | |
15939 | case R_PPC64_TPREL16_HIGHEST: | |
15940 | case R_PPC64_TPREL16_HIGHESTA: | |
766bc656 AM |
15941 | if (h != NULL |
15942 | && h->elf.root.type == bfd_link_hash_undefweak | |
15943 | && h->elf.dynindx == -1) | |
15944 | { | |
15945 | /* Make this relocation against an undefined weak symbol | |
15946 | resolve to zero. This is really just a tweak, since | |
15947 | code using weak externs ought to check that they are | |
15948 | defined before using them. */ | |
15949 | bfd_byte *p = contents + rel->r_offset - d_offset; | |
15950 | ||
95f0d0d2 | 15951 | insn = bfd_get_32 (input_bfd, p); |
766bc656 AM |
15952 | insn = _bfd_elf_ppc_at_tprel_transform (insn, 13); |
15953 | if (insn != 0) | |
95f0d0d2 | 15954 | bfd_put_32 (input_bfd, insn, p); |
766bc656 AM |
15955 | break; |
15956 | } | |
989f9879 AM |
15957 | if (htab->elf.tls_sec != NULL) |
15958 | addend -= htab->elf.tls_sec->vma + TP_OFFSET; | |
7c8bbca5 AM |
15959 | /* The TPREL16 relocs shouldn't really be used in shared |
15960 | libs or with non-local symbols as that will result in | |
15961 | DT_TEXTREL being set, but support them anyway. */ | |
15962 | goto dodyn; | |
411e1bfb AM |
15963 | |
15964 | case R_PPC64_DTPREL16: | |
15965 | case R_PPC64_DTPREL16_LO: | |
15966 | case R_PPC64_DTPREL16_HI: | |
15967 | case R_PPC64_DTPREL16_HA: | |
15968 | case R_PPC64_DTPREL16_DS: | |
15969 | case R_PPC64_DTPREL16_LO_DS: | |
f9c6b907 AM |
15970 | case R_PPC64_DTPREL16_HIGH: |
15971 | case R_PPC64_DTPREL16_HIGHA: | |
411e1bfb AM |
15972 | case R_PPC64_DTPREL16_HIGHER: |
15973 | case R_PPC64_DTPREL16_HIGHERA: | |
15974 | case R_PPC64_DTPREL16_HIGHEST: | |
15975 | case R_PPC64_DTPREL16_HIGHESTA: | |
989f9879 AM |
15976 | if (htab->elf.tls_sec != NULL) |
15977 | addend -= htab->elf.tls_sec->vma + DTP_OFFSET; | |
411e1bfb AM |
15978 | break; |
15979 | ||
45965137 AM |
15980 | case R_PPC64_ADDR64_LOCAL: |
15981 | addend += PPC64_LOCAL_ENTRY_OFFSET (h != NULL | |
15982 | ? h->elf.other | |
15983 | : sym->st_other); | |
15984 | break; | |
15985 | ||
e515b051 AM |
15986 | case R_PPC64_DTPMOD64: |
15987 | relocation = 1; | |
15988 | addend = 0; | |
15989 | goto dodyn; | |
15990 | ||
411e1bfb | 15991 | case R_PPC64_TPREL64: |
989f9879 AM |
15992 | if (htab->elf.tls_sec != NULL) |
15993 | addend -= htab->elf.tls_sec->vma + TP_OFFSET; | |
411e1bfb AM |
15994 | goto dodyn; |
15995 | ||
15996 | case R_PPC64_DTPREL64: | |
989f9879 AM |
15997 | if (htab->elf.tls_sec != NULL) |
15998 | addend -= htab->elf.tls_sec->vma + DTP_OFFSET; | |
1a0670f3 | 15999 | /* Fall through. */ |
411e1bfb | 16000 | |
65f38f15 AM |
16001 | /* Relocations that may need to be propagated if this is a |
16002 | dynamic object. */ | |
04c9666a | 16003 | case R_PPC64_REL30: |
65f38f15 AM |
16004 | case R_PPC64_REL32: |
16005 | case R_PPC64_REL64: | |
16006 | case R_PPC64_ADDR14: | |
16007 | case R_PPC64_ADDR14_BRNTAKEN: | |
16008 | case R_PPC64_ADDR14_BRTAKEN: | |
16009 | case R_PPC64_ADDR16: | |
16010 | case R_PPC64_ADDR16_DS: | |
16011 | case R_PPC64_ADDR16_HA: | |
16012 | case R_PPC64_ADDR16_HI: | |
f9c6b907 AM |
16013 | case R_PPC64_ADDR16_HIGH: |
16014 | case R_PPC64_ADDR16_HIGHA: | |
65f38f15 AM |
16015 | case R_PPC64_ADDR16_HIGHER: |
16016 | case R_PPC64_ADDR16_HIGHERA: | |
16017 | case R_PPC64_ADDR16_HIGHEST: | |
16018 | case R_PPC64_ADDR16_HIGHESTA: | |
16019 | case R_PPC64_ADDR16_LO: | |
16020 | case R_PPC64_ADDR16_LO_DS: | |
16021 | case R_PPC64_ADDR24: | |
65f38f15 AM |
16022 | case R_PPC64_ADDR32: |
16023 | case R_PPC64_ADDR64: | |
16024 | case R_PPC64_UADDR16: | |
16025 | case R_PPC64_UADDR32: | |
16026 | case R_PPC64_UADDR64: | |
411e1bfb | 16027 | dodyn: |
5d1634d7 | 16028 | if ((input_section->flags & SEC_ALLOC) == 0) |
ec338859 AM |
16029 | break; |
16030 | ||
41bd81ab AM |
16031 | if (NO_OPD_RELOCS && is_opd) |
16032 | break; | |
16033 | ||
8a9e8e72 | 16034 | if (bfd_link_pic (info) |
b1b07054 AM |
16035 | ? ((h == NULL |
16036 | || h->dyn_relocs != NULL) | |
16037 | && ((h != NULL && pc_dynrelocs (h)) | |
16038 | || must_be_dyn_reloc (info, r_type))) | |
8a9e8e72 AM |
16039 | : (h != NULL |
16040 | ? h->dyn_relocs != NULL | |
d311bc8b | 16041 | : ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC)) |
65f38f15 | 16042 | { |
b34976b6 | 16043 | bfd_boolean skip, relocate; |
65f38f15 | 16044 | asection *sreloc; |
1cf1f670 | 16045 | bfd_vma out_off; |
82e66161 | 16046 | long indx = 0; |
65f38f15 AM |
16047 | |
16048 | /* When generating a dynamic object, these relocations | |
16049 | are copied into the output file to be resolved at run | |
16050 | time. */ | |
16051 | ||
b34976b6 AM |
16052 | skip = FALSE; |
16053 | relocate = FALSE; | |
65f38f15 | 16054 | |
1cf1f670 AM |
16055 | out_off = _bfd_elf_section_offset (output_bfd, info, |
16056 | input_section, rel->r_offset); | |
16057 | if (out_off == (bfd_vma) -1) | |
b34976b6 | 16058 | skip = TRUE; |
1cf1f670 | 16059 | else if (out_off == (bfd_vma) -2) |
b34976b6 | 16060 | skip = TRUE, relocate = TRUE; |
1cf1f670 AM |
16061 | out_off += (input_section->output_section->vma |
16062 | + input_section->output_offset); | |
16063 | outrel.r_offset = out_off; | |
411e1bfb | 16064 | outrel.r_addend = rel->r_addend; |
65f38f15 | 16065 | |
1cf1f670 AM |
16066 | /* Optimize unaligned reloc use. */ |
16067 | if ((r_type == R_PPC64_ADDR64 && (out_off & 7) != 0) | |
16068 | || (r_type == R_PPC64_UADDR64 && (out_off & 7) == 0)) | |
16069 | r_type ^= R_PPC64_ADDR64 ^ R_PPC64_UADDR64; | |
16070 | else if ((r_type == R_PPC64_ADDR32 && (out_off & 3) != 0) | |
16071 | || (r_type == R_PPC64_UADDR32 && (out_off & 3) == 0)) | |
16072 | r_type ^= R_PPC64_ADDR32 ^ R_PPC64_UADDR32; | |
16073 | else if ((r_type == R_PPC64_ADDR16 && (out_off & 1) != 0) | |
16074 | || (r_type == R_PPC64_UADDR16 && (out_off & 1) == 0)) | |
16075 | r_type ^= R_PPC64_ADDR16 ^ R_PPC64_UADDR16; | |
16076 | ||
65f38f15 | 16077 | if (skip) |
0bb2d96a | 16078 | memset (&outrel, 0, sizeof outrel); |
afe397ea | 16079 | else if (!SYMBOL_REFERENCES_LOCAL (info, &h->elf) |
0b13192e AM |
16080 | && !is_opd |
16081 | && r_type != R_PPC64_TOC) | |
14acf4dc | 16082 | { |
82e66161 AM |
16083 | indx = h->elf.dynindx; |
16084 | BFD_ASSERT (indx != -1); | |
16085 | outrel.r_info = ELF64_R_INFO (indx, r_type); | |
14acf4dc | 16086 | } |
65f38f15 AM |
16087 | else |
16088 | { | |
41bd81ab AM |
16089 | /* This symbol is local, or marked to become local, |
16090 | or this is an opd section reloc which must point | |
16091 | at a local function. */ | |
65f38f15 | 16092 | outrel.r_addend += relocation; |
e86ce104 | 16093 | if (r_type == R_PPC64_ADDR64 || r_type == R_PPC64_TOC) |
65f38f15 | 16094 | { |
3fad3c7c | 16095 | if (is_opd && h != NULL) |
afbe61cf AM |
16096 | { |
16097 | /* Lie about opd entries. This case occurs | |
16098 | when building shared libraries and we | |
16099 | reference a function in another shared | |
3fad3c7c AM |
16100 | lib. The same thing happens for a weak |
16101 | definition in an application that's | |
16102 | overridden by a strong definition in a | |
16103 | shared lib. (I believe this is a generic | |
16104 | bug in binutils handling of weak syms.) | |
16105 | In these cases we won't use the opd | |
1e2f5b6e | 16106 | entry in this lib. */ |
b34976b6 | 16107 | unresolved_reloc = FALSE; |
afbe61cf | 16108 | } |
25f23106 AM |
16109 | if (!is_opd |
16110 | && r_type == R_PPC64_ADDR64 | |
16111 | && (h != NULL | |
16112 | ? h->elf.type == STT_GNU_IFUNC | |
16113 | : ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC)) | |
16114 | outrel.r_info = ELF64_R_INFO (0, R_PPC64_IRELATIVE); | |
16115 | else | |
16116 | { | |
16117 | outrel.r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE); | |
81407a69 | 16118 | |
25f23106 AM |
16119 | /* We need to relocate .opd contents for ld.so. |
16120 | Prelink also wants simple and consistent rules | |
16121 | for relocs. This make all RELATIVE relocs have | |
16122 | *r_offset equal to r_addend. */ | |
16123 | relocate = TRUE; | |
16124 | } | |
65f38f15 AM |
16125 | } |
16126 | else | |
16127 | { | |
25f23106 AM |
16128 | if (h != NULL |
16129 | ? h->elf.type == STT_GNU_IFUNC | |
16130 | : ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC) | |
16131 | { | |
25f53a85 | 16132 | info->callbacks->einfo |
695344c0 | 16133 | /* xgettext:c-format */ |
174d0a74 | 16134 | (_("%H: %s for indirect " |
c1c8c1ef | 16135 | "function `%pT' unsupported\n"), |
25f53a85 | 16136 | input_bfd, input_section, rel->r_offset, |
25f23106 AM |
16137 | ppc64_elf_howto_table[r_type]->name, |
16138 | sym_name); | |
16139 | ret = FALSE; | |
16140 | } | |
cf35638d | 16141 | else if (r_symndx == STN_UNDEF || bfd_is_abs_section (sec)) |
65f38f15 AM |
16142 | ; |
16143 | else if (sec == NULL || sec->owner == NULL) | |
16144 | { | |
16145 | bfd_set_error (bfd_error_bad_value); | |
b34976b6 | 16146 | return FALSE; |
65f38f15 AM |
16147 | } |
16148 | else | |
16149 | { | |
16150 | asection *osec; | |
16151 | ||
16152 | osec = sec->output_section; | |
16153 | indx = elf_section_data (osec)->dynindx; | |
16154 | ||
74541ad4 AM |
16155 | if (indx == 0) |
16156 | { | |
16157 | if ((osec->flags & SEC_READONLY) == 0 | |
16158 | && htab->elf.data_index_section != NULL) | |
16159 | osec = htab->elf.data_index_section; | |
16160 | else | |
16161 | osec = htab->elf.text_index_section; | |
16162 | indx = elf_section_data (osec)->dynindx; | |
16163 | } | |
16164 | BFD_ASSERT (indx != 0); | |
16165 | ||
65f38f15 AM |
16166 | /* We are turning this relocation into one |
16167 | against a section symbol, so subtract out | |
16168 | the output section's address but not the | |
16169 | offset of the input section in the output | |
16170 | section. */ | |
16171 | outrel.r_addend -= osec->vma; | |
16172 | } | |
16173 | ||
16174 | outrel.r_info = ELF64_R_INFO (indx, r_type); | |
16175 | } | |
16176 | } | |
16177 | ||
16178 | sreloc = elf_section_data (input_section)->sreloc; | |
19e08130 AM |
16179 | if (h != NULL |
16180 | ? h->elf.type == STT_GNU_IFUNC | |
16181 | : ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC) | |
82e66161 AM |
16182 | { |
16183 | sreloc = htab->elf.irelplt; | |
16184 | if (indx == 0) | |
16185 | htab->local_ifunc_resolver = 1; | |
16186 | else if (is_static_defined (&h->elf)) | |
16187 | htab->maybe_local_ifunc_resolver = 1; | |
16188 | } | |
65f38f15 AM |
16189 | if (sreloc == NULL) |
16190 | abort (); | |
16191 | ||
dfbb6ac9 AM |
16192 | if (sreloc->reloc_count * sizeof (Elf64_External_Rela) |
16193 | >= sreloc->size) | |
16194 | abort (); | |
947216bf AM |
16195 | loc = sreloc->contents; |
16196 | loc += sreloc->reloc_count++ * sizeof (Elf64_External_Rela); | |
65f38f15 AM |
16197 | bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc); |
16198 | ||
16199 | /* If this reloc is against an external symbol, it will | |
16200 | be computed at runtime, so there's no need to do | |
81407a69 AM |
16201 | anything now. However, for the sake of prelink ensure |
16202 | that the section contents are a known value. */ | |
2cdcc330 | 16203 | if (!relocate) |
81407a69 AM |
16204 | { |
16205 | unresolved_reloc = FALSE; | |
16206 | /* The value chosen here is quite arbitrary as ld.so | |
16207 | ignores section contents except for the special | |
16208 | case of .opd where the contents might be accessed | |
16209 | before relocation. Choose zero, as that won't | |
16210 | cause reloc overflow. */ | |
16211 | relocation = 0; | |
16212 | addend = 0; | |
16213 | /* Use *r_offset == r_addend for R_PPC64_ADDR64 relocs | |
16214 | to improve backward compatibility with older | |
16215 | versions of ld. */ | |
16216 | if (r_type == R_PPC64_ADDR64) | |
16217 | addend = outrel.r_addend; | |
16218 | /* Adjust pc_relative relocs to have zero in *r_offset. */ | |
4ce794b7 | 16219 | else if (ppc64_elf_howto_table[r_type]->pc_relative) |
f0158f44 | 16220 | addend = outrel.r_offset; |
81407a69 | 16221 | } |
65f38f15 | 16222 | } |
5bd4f169 AM |
16223 | break; |
16224 | ||
65f38f15 AM |
16225 | case R_PPC64_COPY: |
16226 | case R_PPC64_GLOB_DAT: | |
16227 | case R_PPC64_JMP_SLOT: | |
25f23106 | 16228 | case R_PPC64_JMP_IREL: |
65f38f15 AM |
16229 | case R_PPC64_RELATIVE: |
16230 | /* We shouldn't ever see these dynamic relocs in relocatable | |
16231 | files. */ | |
ae9a127f | 16232 | /* Fall through. */ |
65f38f15 AM |
16233 | |
16234 | case R_PPC64_PLTGOT16: | |
16235 | case R_PPC64_PLTGOT16_DS: | |
16236 | case R_PPC64_PLTGOT16_HA: | |
16237 | case R_PPC64_PLTGOT16_HI: | |
16238 | case R_PPC64_PLTGOT16_LO: | |
16239 | case R_PPC64_PLTGOT16_LO_DS: | |
16240 | case R_PPC64_PLTREL32: | |
16241 | case R_PPC64_PLTREL64: | |
16242 | /* These ones haven't been implemented yet. */ | |
16243 | ||
25f53a85 | 16244 | info->callbacks->einfo |
695344c0 | 16245 | /* xgettext:c-format */ |
c1c8c1ef | 16246 | (_("%P: %pB: %s is not supported for `%pT'\n"), |
d003868e | 16247 | input_bfd, |
4ce794b7 | 16248 | ppc64_elf_howto_table[r_type]->name, sym_name); |
5bd4f169 AM |
16249 | |
16250 | bfd_set_error (bfd_error_invalid_operation); | |
b34976b6 | 16251 | ret = FALSE; |
c316a17c | 16252 | goto copy_reloc; |
65f38f15 | 16253 | } |
5bd4f169 | 16254 | |
67f0cbdb AM |
16255 | /* Multi-instruction sequences that access the TOC can be |
16256 | optimized, eg. addis ra,r2,0; addi rb,ra,x; | |
07d6d2b8 | 16257 | to nop; addi rb,r2,x; */ |
67f0cbdb AM |
16258 | switch (r_type) |
16259 | { | |
16260 | default: | |
16261 | break; | |
16262 | ||
16263 | case R_PPC64_GOT_TLSLD16_HI: | |
16264 | case R_PPC64_GOT_TLSGD16_HI: | |
16265 | case R_PPC64_GOT_TPREL16_HI: | |
16266 | case R_PPC64_GOT_DTPREL16_HI: | |
16267 | case R_PPC64_GOT16_HI: | |
16268 | case R_PPC64_TOC16_HI: | |
16269 | /* These relocs would only be useful if building up an | |
16270 | offset to later add to r2, perhaps in an indexed | |
16271 | addressing mode instruction. Don't try to optimize. | |
16272 | Unfortunately, the possibility of someone building up an | |
16273 | offset like this or even with the HA relocs, means that | |
16274 | we need to check the high insn when optimizing the low | |
16275 | insn. */ | |
16276 | break; | |
16277 | ||
23cedd1d AM |
16278 | case R_PPC64_PLTCALL: |
16279 | if (unresolved_reloc) | |
16280 | { | |
16281 | /* No plt entry. Make this into a direct call. */ | |
16282 | bfd_byte *p = contents + rel->r_offset; | |
16283 | insn = bfd_get_32 (input_bfd, p); | |
16284 | insn &= 1; | |
16285 | bfd_put_32 (input_bfd, B_DOT | insn, p); | |
16286 | bfd_put_32 (input_bfd, NOP, p + 4); | |
16287 | unresolved_reloc = save_unresolved_reloc; | |
16288 | r_type = R_PPC64_REL24; | |
16289 | } | |
16290 | break; | |
16291 | ||
16292 | case R_PPC64_PLTSEQ: | |
16293 | if (unresolved_reloc) | |
16294 | { | |
16295 | unresolved_reloc = FALSE; | |
16296 | goto nop_it; | |
16297 | } | |
16298 | break; | |
16299 | ||
16300 | case R_PPC64_PLT16_HA: | |
16301 | if (unresolved_reloc) | |
16302 | { | |
16303 | unresolved_reloc = FALSE; | |
16304 | goto nop_it; | |
16305 | } | |
16306 | /* Fall through. */ | |
67f0cbdb AM |
16307 | case R_PPC64_GOT_TLSLD16_HA: |
16308 | case R_PPC64_GOT_TLSGD16_HA: | |
16309 | case R_PPC64_GOT_TPREL16_HA: | |
16310 | case R_PPC64_GOT_DTPREL16_HA: | |
16311 | case R_PPC64_GOT16_HA: | |
16312 | case R_PPC64_TOC16_HA: | |
98528052 | 16313 | if (htab->do_toc_opt && relocation + addend + 0x8000 < 0x10000 |
560c8763 | 16314 | && !ppc64_elf_tdata (input_bfd)->unexpected_toc_insn) |
98528052 | 16315 | { |
23cedd1d AM |
16316 | bfd_byte *p; |
16317 | nop_it: | |
16318 | p = contents + (rel->r_offset & ~3); | |
98528052 | 16319 | bfd_put_32 (input_bfd, NOP, p); |
d830549d | 16320 | goto copy_reloc; |
98528052 | 16321 | } |
67f0cbdb AM |
16322 | break; |
16323 | ||
23cedd1d AM |
16324 | case R_PPC64_PLT16_LO: |
16325 | case R_PPC64_PLT16_LO_DS: | |
16326 | if (unresolved_reloc) | |
16327 | { | |
16328 | unresolved_reloc = FALSE; | |
16329 | goto nop_it; | |
16330 | } | |
16331 | /* Fall through. */ | |
67f0cbdb AM |
16332 | case R_PPC64_GOT_TLSLD16_LO: |
16333 | case R_PPC64_GOT_TLSGD16_LO: | |
16334 | case R_PPC64_GOT_TPREL16_LO_DS: | |
16335 | case R_PPC64_GOT_DTPREL16_LO_DS: | |
16336 | case R_PPC64_GOT16_LO: | |
16337 | case R_PPC64_GOT16_LO_DS: | |
16338 | case R_PPC64_TOC16_LO: | |
16339 | case R_PPC64_TOC16_LO_DS: | |
98528052 | 16340 | if (htab->do_toc_opt && relocation + addend + 0x8000 < 0x10000 |
560c8763 | 16341 | && !ppc64_elf_tdata (input_bfd)->unexpected_toc_insn) |
67f0cbdb AM |
16342 | { |
16343 | bfd_byte *p = contents + (rel->r_offset & ~3); | |
16344 | insn = bfd_get_32 (input_bfd, p); | |
560c8763 AM |
16345 | if ((insn & (0x3f << 26)) == 12u << 26 /* addic */) |
16346 | { | |
16347 | /* Transform addic to addi when we change reg. */ | |
16348 | insn &= ~((0x3f << 26) | (0x1f << 16)); | |
16349 | insn |= (14u << 26) | (2 << 16); | |
16350 | } | |
16351 | else | |
67f0cbdb | 16352 | { |
98528052 AM |
16353 | insn &= ~(0x1f << 16); |
16354 | insn |= 2 << 16; | |
67f0cbdb | 16355 | } |
560c8763 | 16356 | bfd_put_32 (input_bfd, insn, p); |
67f0cbdb AM |
16357 | } |
16358 | break; | |
9a23f96e AM |
16359 | |
16360 | case R_PPC64_TPREL16_HA: | |
16361 | if (htab->do_tls_opt && relocation + addend + 0x8000 < 0x10000) | |
16362 | { | |
16363 | bfd_byte *p = contents + (rel->r_offset & ~3); | |
16364 | insn = bfd_get_32 (input_bfd, p); | |
16365 | if ((insn & ((0x3f << 26) | 0x1f << 16)) | |
16366 | != ((15u << 26) | (13 << 16)) /* addis rt,13,imm */) | |
16367 | /* xgettext:c-format */ | |
16368 | info->callbacks->minfo | |
16369 | (_("%H: warning: %s unexpected insn %#x.\n"), | |
d830549d AM |
16370 | input_bfd, input_section, rel->r_offset, |
16371 | ppc64_elf_howto_table[r_type]->name, insn); | |
9a23f96e | 16372 | else |
d830549d AM |
16373 | { |
16374 | bfd_put_32 (input_bfd, NOP, p); | |
16375 | goto copy_reloc; | |
16376 | } | |
9a23f96e AM |
16377 | } |
16378 | break; | |
16379 | ||
16380 | case R_PPC64_TPREL16_LO: | |
16381 | case R_PPC64_TPREL16_LO_DS: | |
16382 | if (htab->do_tls_opt && relocation + addend + 0x8000 < 0x10000) | |
16383 | { | |
16384 | bfd_byte *p = contents + (rel->r_offset & ~3); | |
16385 | insn = bfd_get_32 (input_bfd, p); | |
16386 | insn &= ~(0x1f << 16); | |
16387 | insn |= 13 << 16; | |
16388 | bfd_put_32 (input_bfd, insn, p); | |
16389 | } | |
16390 | break; | |
67f0cbdb AM |
16391 | } |
16392 | ||
65f38f15 AM |
16393 | /* Do any further special processing. */ |
16394 | switch (r_type) | |
16395 | { | |
16396 | default: | |
16397 | break; | |
16398 | ||
25f23106 | 16399 | case R_PPC64_REL16_HA: |
a680de9a | 16400 | case R_PPC64_REL16DX_HA: |
f9c6b907 AM |
16401 | case R_PPC64_ADDR16_HA: |
16402 | case R_PPC64_ADDR16_HIGHA: | |
65f38f15 AM |
16403 | case R_PPC64_ADDR16_HIGHERA: |
16404 | case R_PPC64_ADDR16_HIGHESTA: | |
65f38f15 AM |
16405 | case R_PPC64_TOC16_HA: |
16406 | case R_PPC64_SECTOFF_HA: | |
411e1bfb | 16407 | case R_PPC64_TPREL16_HA: |
f9c6b907 | 16408 | case R_PPC64_TPREL16_HIGHA: |
411e1bfb | 16409 | case R_PPC64_TPREL16_HIGHERA: |
411e1bfb | 16410 | case R_PPC64_TPREL16_HIGHESTA: |
f9c6b907 AM |
16411 | case R_PPC64_DTPREL16_HA: |
16412 | case R_PPC64_DTPREL16_HIGHA: | |
411e1bfb | 16413 | case R_PPC64_DTPREL16_HIGHERA: |
411e1bfb | 16414 | case R_PPC64_DTPREL16_HIGHESTA: |
65f38f15 AM |
16415 | /* It's just possible that this symbol is a weak symbol |
16416 | that's not actually defined anywhere. In that case, | |
16417 | 'sec' would be NULL, and we should leave the symbol | |
16418 | alone (it will be set to zero elsewhere in the link). */ | |
5c5f6e17 AM |
16419 | if (sec == NULL) |
16420 | break; | |
1a0670f3 | 16421 | /* Fall through. */ |
5c5f6e17 AM |
16422 | |
16423 | case R_PPC64_GOT16_HA: | |
16424 | case R_PPC64_PLTGOT16_HA: | |
16425 | case R_PPC64_PLT16_HA: | |
16426 | case R_PPC64_GOT_TLSGD16_HA: | |
16427 | case R_PPC64_GOT_TLSLD16_HA: | |
16428 | case R_PPC64_GOT_TPREL16_HA: | |
16429 | case R_PPC64_GOT_DTPREL16_HA: | |
16430 | /* Add 0x10000 if sign bit in 0:15 is set. | |
16431 | Bits 0:15 are not used. */ | |
16432 | addend += 0x8000; | |
65f38f15 AM |
16433 | break; |
16434 | ||
16435 | case R_PPC64_ADDR16_DS: | |
16436 | case R_PPC64_ADDR16_LO_DS: | |
16437 | case R_PPC64_GOT16_DS: | |
16438 | case R_PPC64_GOT16_LO_DS: | |
16439 | case R_PPC64_PLT16_LO_DS: | |
16440 | case R_PPC64_SECTOFF_DS: | |
16441 | case R_PPC64_SECTOFF_LO_DS: | |
16442 | case R_PPC64_TOC16_DS: | |
16443 | case R_PPC64_TOC16_LO_DS: | |
16444 | case R_PPC64_PLTGOT16_DS: | |
16445 | case R_PPC64_PLTGOT16_LO_DS: | |
411e1bfb AM |
16446 | case R_PPC64_GOT_TPREL16_DS: |
16447 | case R_PPC64_GOT_TPREL16_LO_DS: | |
16448 | case R_PPC64_GOT_DTPREL16_DS: | |
16449 | case R_PPC64_GOT_DTPREL16_LO_DS: | |
16450 | case R_PPC64_TPREL16_DS: | |
16451 | case R_PPC64_TPREL16_LO_DS: | |
16452 | case R_PPC64_DTPREL16_DS: | |
16453 | case R_PPC64_DTPREL16_LO_DS: | |
adadcc0c AM |
16454 | insn = bfd_get_32 (input_bfd, contents + (rel->r_offset & ~3)); |
16455 | mask = 3; | |
a680de9a PB |
16456 | /* If this reloc is against an lq, lxv, or stxv insn, then |
16457 | the value must be a multiple of 16. This is somewhat of | |
16458 | a hack, but the "correct" way to do this by defining _DQ | |
16459 | forms of all the _DS relocs bloats all reloc switches in | |
16460 | this file. It doesn't make much sense to use these | |
16461 | relocs in data, so testing the insn should be safe. */ | |
16462 | if ((insn & (0x3f << 26)) == (56u << 26) | |
16463 | || ((insn & (0x3f << 26)) == (61u << 26) && (insn & 3) == 1)) | |
adadcc0c | 16464 | mask = 15; |
a680de9a PB |
16465 | relocation += addend; |
16466 | addend = insn & (mask ^ 3); | |
16467 | if ((relocation & mask) != 0) | |
65f38f15 | 16468 | { |
a680de9a | 16469 | relocation ^= relocation & mask; |
25f53a85 | 16470 | info->callbacks->einfo |
695344c0 | 16471 | /* xgettext:c-format */ |
174d0a74 | 16472 | (_("%H: error: %s not a multiple of %u\n"), |
25f53a85 | 16473 | input_bfd, input_section, rel->r_offset, |
d830549d | 16474 | ppc64_elf_howto_table[r_type]->name, |
adadcc0c | 16475 | mask + 1); |
65f38f15 | 16476 | bfd_set_error (bfd_error_bad_value); |
b34976b6 | 16477 | ret = FALSE; |
c316a17c | 16478 | goto copy_reloc; |
65f38f15 AM |
16479 | } |
16480 | break; | |
5bd4f169 AM |
16481 | } |
16482 | ||
239e1f3a AM |
16483 | /* Dynamic relocs are not propagated for SEC_DEBUGGING sections |
16484 | because such sections are not SEC_ALLOC and thus ld.so will | |
16485 | not process them. */ | |
d830549d | 16486 | howto = ppc64_elf_howto_table[(int) r_type]; |
65f38f15 | 16487 | if (unresolved_reloc |
239e1f3a | 16488 | && !((input_section->flags & SEC_DEBUGGING) != 0 |
1d5316ab AM |
16489 | && h->elf.def_dynamic) |
16490 | && _bfd_elf_section_offset (output_bfd, info, input_section, | |
16491 | rel->r_offset) != (bfd_vma) -1) | |
9c07fe7c | 16492 | { |
25f53a85 | 16493 | info->callbacks->einfo |
695344c0 | 16494 | /* xgettext:c-format */ |
c1c8c1ef | 16495 | (_("%H: unresolvable %s against `%pT'\n"), |
25f53a85 | 16496 | input_bfd, input_section, rel->r_offset, |
b80eed39 | 16497 | howto->name, |
039b3fef | 16498 | h->elf.root.root.string); |
b34976b6 | 16499 | ret = FALSE; |
9c07fe7c | 16500 | } |
5bd4f169 | 16501 | |
b80eed39 AM |
16502 | /* 16-bit fields in insns mostly have signed values, but a |
16503 | few insns have 16-bit unsigned values. Really, we should | |
16504 | have different reloc types. */ | |
16505 | if (howto->complain_on_overflow != complain_overflow_dont | |
16506 | && howto->dst_mask == 0xffff | |
16507 | && (input_section->flags & SEC_CODE) != 0) | |
16508 | { | |
16509 | enum complain_overflow complain = complain_overflow_signed; | |
16510 | ||
16511 | insn = bfd_get_32 (input_bfd, contents + (rel->r_offset & ~3)); | |
a47622ac AM |
16512 | if ((insn & (0x3f << 26)) == 10u << 26 /* cmpli */) |
16513 | complain = complain_overflow_bitfield; | |
16514 | else if (howto->rightshift == 0 | |
16515 | ? ((insn & (0x3f << 26)) == 28u << 26 /* andi */ | |
16516 | || (insn & (0x3f << 26)) == 24u << 26 /* ori */ | |
16517 | || (insn & (0x3f << 26)) == 26u << 26 /* xori */) | |
16518 | : ((insn & (0x3f << 26)) == 29u << 26 /* andis */ | |
16519 | || (insn & (0x3f << 26)) == 25u << 26 /* oris */ | |
16520 | || (insn & (0x3f << 26)) == 27u << 26 /* xoris */)) | |
b80eed39 AM |
16521 | complain = complain_overflow_unsigned; |
16522 | if (howto->complain_on_overflow != complain) | |
16523 | { | |
16524 | alt_howto = *howto; | |
16525 | alt_howto.complain_on_overflow = complain; | |
16526 | howto = &alt_howto; | |
16527 | } | |
16528 | } | |
16529 | ||
a680de9a PB |
16530 | if (r_type == R_PPC64_REL16DX_HA) |
16531 | { | |
16532 | /* Split field reloc isn't handled by _bfd_final_link_relocate. */ | |
16533 | if (rel->r_offset + 4 > input_section->size) | |
16534 | r = bfd_reloc_outofrange; | |
16535 | else | |
16536 | { | |
16537 | relocation += addend; | |
16538 | relocation -= (rel->r_offset | |
16539 | + input_section->output_offset | |
16540 | + input_section->output_section->vma); | |
3de43e7b | 16541 | relocation = (bfd_signed_vma) relocation >> 16; |
a680de9a PB |
16542 | insn = bfd_get_32 (input_bfd, contents + rel->r_offset); |
16543 | insn &= ~0x1fffc1; | |
3de43e7b | 16544 | insn |= (relocation & 0xffc1) | ((relocation & 0x3e) << 15); |
a680de9a PB |
16545 | bfd_put_32 (input_bfd, insn, contents + rel->r_offset); |
16546 | r = bfd_reloc_ok; | |
3de43e7b | 16547 | if (relocation + 0x8000 > 0xffff) |
a680de9a PB |
16548 | r = bfd_reloc_overflow; |
16549 | } | |
16550 | } | |
16551 | else | |
16552 | r = _bfd_final_link_relocate (howto, input_bfd, input_section, contents, | |
16553 | rel->r_offset, relocation, addend); | |
5bd4f169 | 16554 | |
ef60b7ff | 16555 | if (r != bfd_reloc_ok) |
5bd4f169 | 16556 | { |
bc30df16 | 16557 | char *more_info = NULL; |
b80eed39 | 16558 | const char *reloc_name = howto->name; |
bc30df16 AM |
16559 | |
16560 | if (reloc_dest != DEST_NORMAL) | |
16561 | { | |
16562 | more_info = bfd_malloc (strlen (reloc_name) + 8); | |
16563 | if (more_info != NULL) | |
16564 | { | |
16565 | strcpy (more_info, reloc_name); | |
16566 | strcat (more_info, (reloc_dest == DEST_OPD | |
16567 | ? " (OPD)" : " (stub)")); | |
16568 | reloc_name = more_info; | |
16569 | } | |
16570 | } | |
16571 | ||
cd27b276 | 16572 | if (r == bfd_reloc_overflow) |
5bd4f169 | 16573 | { |
8131c122 AM |
16574 | /* On code like "if (foo) foo();" don't report overflow |
16575 | on a branch to zero when foo is undefined. */ | |
16576 | if (!warned | |
16577 | && (reloc_dest == DEST_STUB | |
16578 | || !(h != NULL | |
16579 | && (h->elf.root.type == bfd_link_hash_undefweak | |
16580 | || h->elf.root.type == bfd_link_hash_undefined) | |
16581 | && is_branch_reloc (r_type)))) | |
1a72702b AM |
16582 | info->callbacks->reloc_overflow (info, &h->elf.root, |
16583 | sym_name, reloc_name, | |
16584 | orig_rel.r_addend, | |
16585 | input_bfd, input_section, | |
16586 | rel->r_offset); | |
ef60b7ff AM |
16587 | } |
16588 | else | |
16589 | { | |
25f53a85 | 16590 | info->callbacks->einfo |
695344c0 | 16591 | /* xgettext:c-format */ |
c1c8c1ef | 16592 | (_("%H: %s against `%pT': error %d\n"), |
25f53a85 | 16593 | input_bfd, input_section, rel->r_offset, |
bc30df16 | 16594 | reloc_name, sym_name, (int) r); |
b34976b6 | 16595 | ret = FALSE; |
ef60b7ff | 16596 | } |
bc30df16 AM |
16597 | if (more_info != NULL) |
16598 | free (more_info); | |
5bd4f169 | 16599 | } |
c316a17c AM |
16600 | copy_reloc: |
16601 | if (wrel != rel) | |
16602 | *wrel = *rel; | |
16603 | } | |
16604 | ||
16605 | if (wrel != rel) | |
16606 | { | |
16607 | Elf_Internal_Shdr *rel_hdr; | |
16608 | size_t deleted = rel - wrel; | |
16609 | ||
16610 | rel_hdr = _bfd_elf_single_rel_hdr (input_section->output_section); | |
16611 | rel_hdr->sh_size -= rel_hdr->sh_entsize * deleted; | |
16612 | if (rel_hdr->sh_size == 0) | |
16613 | { | |
16614 | /* It is too late to remove an empty reloc section. Leave | |
16615 | one NONE reloc. | |
16616 | ??? What is wrong with an empty section??? */ | |
16617 | rel_hdr->sh_size = rel_hdr->sh_entsize; | |
16618 | deleted -= 1; | |
16619 | } | |
16620 | rel_hdr = _bfd_elf_single_rel_hdr (input_section); | |
16621 | rel_hdr->sh_size -= rel_hdr->sh_entsize * deleted; | |
16622 | input_section->reloc_count -= deleted; | |
5bd4f169 AM |
16623 | } |
16624 | ||
645ea6a9 AM |
16625 | /* If we're emitting relocations, then shortly after this function |
16626 | returns, reloc offsets and addends for this section will be | |
16627 | adjusted. Worse, reloc symbol indices will be for the output | |
8860955f AM |
16628 | file rather than the input. Save a copy of the relocs for |
16629 | opd_entry_value. */ | |
0e1862bb | 16630 | if (is_opd && (info->emitrelocations || bfd_link_relocatable (info))) |
8860955f AM |
16631 | { |
16632 | bfd_size_type amt; | |
16633 | amt = input_section->reloc_count * sizeof (Elf_Internal_Rela); | |
16634 | rel = bfd_alloc (input_bfd, amt); | |
729eabd5 AM |
16635 | BFD_ASSERT (ppc64_elf_tdata (input_bfd)->opd.relocs == NULL); |
16636 | ppc64_elf_tdata (input_bfd)->opd.relocs = rel; | |
8860955f AM |
16637 | if (rel == NULL) |
16638 | return FALSE; | |
16639 | memcpy (rel, relocs, amt); | |
16640 | } | |
5bd4f169 AM |
16641 | return ret; |
16642 | } | |
16643 | ||
754021d0 AM |
16644 | /* Adjust the value of any local symbols in opd sections. */ |
16645 | ||
6e0b88f1 | 16646 | static int |
754021d0 AM |
16647 | ppc64_elf_output_symbol_hook (struct bfd_link_info *info, |
16648 | const char *name ATTRIBUTE_UNUSED, | |
16649 | Elf_Internal_Sym *elfsym, | |
16650 | asection *input_sec, | |
16651 | struct elf_link_hash_entry *h) | |
16652 | { | |
74f0fb50 AM |
16653 | struct _opd_sec_data *opd; |
16654 | long adjust; | |
754021d0 AM |
16655 | bfd_vma value; |
16656 | ||
4025353c | 16657 | if (h != NULL) |
6e0b88f1 | 16658 | return 1; |
4025353c | 16659 | |
74f0fb50 AM |
16660 | opd = get_opd_info (input_sec); |
16661 | if (opd == NULL || opd->adjust == NULL) | |
6e0b88f1 | 16662 | return 1; |
754021d0 AM |
16663 | |
16664 | value = elfsym->st_value - input_sec->output_offset; | |
0e1862bb | 16665 | if (!bfd_link_relocatable (info)) |
754021d0 AM |
16666 | value -= input_sec->output_section->vma; |
16667 | ||
51aecdc5 | 16668 | adjust = opd->adjust[OPD_NDX (value)]; |
4025353c | 16669 | if (adjust == -1) |
6e0b88f1 AM |
16670 | return 2; |
16671 | ||
16672 | elfsym->st_value += adjust; | |
16673 | return 1; | |
754021d0 AM |
16674 | } |
16675 | ||
5bd4f169 AM |
16676 | /* Finish up dynamic symbol handling. We set the contents of various |
16677 | dynamic sections here. */ | |
16678 | ||
b34976b6 | 16679 | static bfd_boolean |
4ce794b7 AM |
16680 | ppc64_elf_finish_dynamic_symbol (bfd *output_bfd, |
16681 | struct bfd_link_info *info, | |
16682 | struct elf_link_hash_entry *h, | |
4aef7643 | 16683 | Elf_Internal_Sym *sym) |
5bd4f169 | 16684 | { |
65f38f15 | 16685 | struct ppc_link_hash_table *htab; |
8387904d | 16686 | struct plt_entry *ent; |
5bd4f169 | 16687 | |
65f38f15 | 16688 | htab = ppc_hash_table (info); |
4dfe6ac6 NC |
16689 | if (htab == NULL) |
16690 | return FALSE; | |
5bd4f169 | 16691 | |
49c09209 AM |
16692 | if (!htab->opd_abi && !h->def_regular) |
16693 | for (ent = h->plt.plist; ent != NULL; ent = ent->next) | |
16694 | if (ent->plt.offset != (bfd_vma) -1) | |
16695 | { | |
16696 | /* Mark the symbol as undefined, rather than as | |
16697 | defined in glink. Leave the value if there were | |
16698 | any relocations where pointer equality matters | |
16699 | (this is a clue for the dynamic linker, to make | |
16700 | function pointer comparisons work between an | |
16701 | application and shared library), otherwise set it | |
16702 | to zero. */ | |
16703 | sym->st_shndx = SHN_UNDEF; | |
16704 | if (!h->pointer_equality_needed) | |
16705 | sym->st_value = 0; | |
16706 | else if (!h->ref_regular_nonweak) | |
16707 | { | |
16708 | /* This breaks function pointer comparisons, but | |
16709 | that is better than breaking tests for a NULL | |
16710 | function pointer. */ | |
16711 | sym->st_value = 0; | |
16712 | } | |
16713 | break; | |
16714 | } | |
5bd4f169 | 16715 | |
f5385ebf | 16716 | if (h->needs_copy) |
5bd4f169 | 16717 | { |
65f38f15 | 16718 | /* This symbol needs a copy reloc. Set it up. */ |
49c09209 | 16719 | Elf_Internal_Rela rela; |
5474d94f | 16720 | asection *srel; |
49c09209 | 16721 | bfd_byte *loc; |
5bd4f169 | 16722 | |
65f38f15 AM |
16723 | if (h->dynindx == -1 |
16724 | || (h->root.type != bfd_link_hash_defined | |
16725 | && h->root.type != bfd_link_hash_defweak) | |
5474d94f AM |
16726 | || htab->elf.srelbss == NULL |
16727 | || htab->elf.sreldynrelro == NULL) | |
65f38f15 | 16728 | abort (); |
5bd4f169 AM |
16729 | |
16730 | rela.r_offset = (h->root.u.def.value | |
16731 | + h->root.u.def.section->output_section->vma | |
16732 | + h->root.u.def.section->output_offset); | |
16733 | rela.r_info = ELF64_R_INFO (h->dynindx, R_PPC64_COPY); | |
16734 | rela.r_addend = 0; | |
afbf7e8e | 16735 | if (h->root.u.def.section == htab->elf.sdynrelro) |
5474d94f AM |
16736 | srel = htab->elf.sreldynrelro; |
16737 | else | |
16738 | srel = htab->elf.srelbss; | |
16739 | loc = srel->contents; | |
16740 | loc += srel->reloc_count++ * sizeof (Elf64_External_Rela); | |
65f38f15 | 16741 | bfd_elf64_swap_reloca_out (output_bfd, &rela, loc); |
5bd4f169 AM |
16742 | } |
16743 | ||
b34976b6 | 16744 | return TRUE; |
5bd4f169 AM |
16745 | } |
16746 | ||
65f38f15 AM |
16747 | /* Used to decide how to sort relocs in an optimal manner for the |
16748 | dynamic linker, before writing them out. */ | |
16749 | ||
16750 | static enum elf_reloc_type_class | |
7e612e98 AM |
16751 | ppc64_elf_reloc_type_class (const struct bfd_link_info *info, |
16752 | const asection *rel_sec, | |
16753 | const Elf_Internal_Rela *rela) | |
65f38f15 | 16754 | { |
04c9666a | 16755 | enum elf_ppc64_reloc_type r_type; |
7e612e98 AM |
16756 | struct ppc_link_hash_table *htab = ppc_hash_table (info); |
16757 | ||
33e44f2e | 16758 | if (rel_sec == htab->elf.irelplt) |
7e612e98 | 16759 | return reloc_class_ifunc; |
a33d1f77 | 16760 | |
4ce794b7 | 16761 | r_type = ELF64_R_TYPE (rela->r_info); |
a33d1f77 | 16762 | switch (r_type) |
65f38f15 AM |
16763 | { |
16764 | case R_PPC64_RELATIVE: | |
16765 | return reloc_class_relative; | |
16766 | case R_PPC64_JMP_SLOT: | |
16767 | return reloc_class_plt; | |
16768 | case R_PPC64_COPY: | |
16769 | return reloc_class_copy; | |
16770 | default: | |
16771 | return reloc_class_normal; | |
16772 | } | |
16773 | } | |
16774 | ||
5bd4f169 AM |
16775 | /* Finish up the dynamic sections. */ |
16776 | ||
b34976b6 | 16777 | static bfd_boolean |
4ce794b7 AM |
16778 | ppc64_elf_finish_dynamic_sections (bfd *output_bfd, |
16779 | struct bfd_link_info *info) | |
5bd4f169 | 16780 | { |
65f38f15 AM |
16781 | struct ppc_link_hash_table *htab; |
16782 | bfd *dynobj; | |
5bd4f169 | 16783 | asection *sdyn; |
5bd4f169 | 16784 | |
65f38f15 | 16785 | htab = ppc_hash_table (info); |
4dfe6ac6 NC |
16786 | if (htab == NULL) |
16787 | return FALSE; | |
16788 | ||
65f38f15 | 16789 | dynobj = htab->elf.dynobj; |
3d4d4302 | 16790 | sdyn = bfd_get_linker_section (dynobj, ".dynamic"); |
5bd4f169 | 16791 | |
65f38f15 | 16792 | if (htab->elf.dynamic_sections_created) |
5bd4f169 | 16793 | { |
5bd4f169 AM |
16794 | Elf64_External_Dyn *dyncon, *dynconend; |
16795 | ||
33e44f2e | 16796 | if (sdyn == NULL || htab->elf.sgot == NULL) |
65f38f15 | 16797 | abort (); |
5bd4f169 AM |
16798 | |
16799 | dyncon = (Elf64_External_Dyn *) sdyn->contents; | |
eea6121a | 16800 | dynconend = (Elf64_External_Dyn *) (sdyn->contents + sdyn->size); |
5bd4f169 AM |
16801 | for (; dyncon < dynconend; dyncon++) |
16802 | { | |
16803 | Elf_Internal_Dyn dyn; | |
19397422 | 16804 | asection *s; |
5bd4f169 AM |
16805 | |
16806 | bfd_elf64_swap_dyn_in (dynobj, dyncon, &dyn); | |
16807 | ||
16808 | switch (dyn.d_tag) | |
16809 | { | |
65f38f15 AM |
16810 | default: |
16811 | continue; | |
5bd4f169 | 16812 | |
5d1634d7 | 16813 | case DT_PPC64_GLINK: |
4ce794b7 | 16814 | s = htab->glink; |
6348e046 | 16815 | dyn.d_un.d_ptr = s->output_section->vma + s->output_offset; |
ad8e1ba5 AM |
16816 | /* We stupidly defined DT_PPC64_GLINK to be the start |
16817 | of glink rather than the first entry point, which is | |
16818 | what ld.so needs, and now have a bigger stub to | |
16819 | support automatic multiple TOCs. */ | |
9e390558 | 16820 | dyn.d_un.d_ptr += GLINK_PLTRESOLVE_SIZE (htab) - 8 * 4; |
5d1634d7 AM |
16821 | break; |
16822 | ||
19397422 AM |
16823 | case DT_PPC64_OPD: |
16824 | s = bfd_get_section_by_name (output_bfd, ".opd"); | |
6348e046 AM |
16825 | if (s == NULL) |
16826 | continue; | |
16827 | dyn.d_un.d_ptr = s->vma; | |
19397422 AM |
16828 | break; |
16829 | ||
e8910a83 AM |
16830 | case DT_PPC64_OPT: |
16831 | if (htab->do_multi_toc && htab->multi_toc_needed) | |
16832 | dyn.d_un.d_val |= PPC64_OPT_MULTI_TOC; | |
f378ab09 AM |
16833 | if (htab->has_plt_localentry0) |
16834 | dyn.d_un.d_val |= PPC64_OPT_LOCALENTRY; | |
e8910a83 AM |
16835 | break; |
16836 | ||
19397422 AM |
16837 | case DT_PPC64_OPDSZ: |
16838 | s = bfd_get_section_by_name (output_bfd, ".opd"); | |
6348e046 AM |
16839 | if (s == NULL) |
16840 | continue; | |
eea6121a | 16841 | dyn.d_un.d_val = s->size; |
19397422 AM |
16842 | break; |
16843 | ||
65f38f15 | 16844 | case DT_PLTGOT: |
33e44f2e | 16845 | s = htab->elf.splt; |
6348e046 | 16846 | dyn.d_un.d_ptr = s->output_section->vma + s->output_offset; |
65f38f15 AM |
16847 | break; |
16848 | ||
16849 | case DT_JMPREL: | |
33e44f2e | 16850 | s = htab->elf.srelplt; |
6348e046 | 16851 | dyn.d_un.d_ptr = s->output_section->vma + s->output_offset; |
65f38f15 | 16852 | break; |
5bd4f169 | 16853 | |
65f38f15 | 16854 | case DT_PLTRELSZ: |
33e44f2e | 16855 | dyn.d_un.d_val = htab->elf.srelplt->size; |
5d1634d7 | 16856 | break; |
82e66161 AM |
16857 | |
16858 | case DT_TEXTREL: | |
16859 | if (htab->local_ifunc_resolver) | |
16860 | info->callbacks->einfo | |
16861 | (_("%X%P: text relocations and GNU indirect " | |
16862 | "functions will result in a segfault at runtime\n")); | |
16863 | else if (htab->maybe_local_ifunc_resolver) | |
16864 | info->callbacks->einfo | |
16865 | (_("%P: warning: text relocations and GNU indirect " | |
16866 | "functions may result in a segfault at runtime\n")); | |
16867 | continue; | |
5bd4f169 | 16868 | } |
5bd4f169 | 16869 | |
65f38f15 | 16870 | bfd_elf64_swap_dyn_out (output_bfd, &dyn, dyncon); |
5bd4f169 | 16871 | } |
5bd4f169 AM |
16872 | } |
16873 | ||
6528b6eb AM |
16874 | if (htab->elf.sgot != NULL && htab->elf.sgot->size != 0 |
16875 | && htab->elf.sgot->output_section != bfd_abs_section_ptr) | |
5d1634d7 AM |
16876 | { |
16877 | /* Fill in the first entry in the global offset table. | |
16878 | We use it to hold the link-time TOCbase. */ | |
16879 | bfd_put_64 (output_bfd, | |
60ee0d4a | 16880 | elf_gp (output_bfd) + TOC_BASE_OFF, |
33e44f2e | 16881 | htab->elf.sgot->contents); |
5d1634d7 AM |
16882 | |
16883 | /* Set .got entry size. */ | |
2cdcc330 AM |
16884 | elf_section_data (htab->elf.sgot->output_section)->this_hdr.sh_entsize |
16885 | = 8; | |
5d1634d7 AM |
16886 | } |
16887 | ||
6528b6eb AM |
16888 | if (htab->elf.splt != NULL && htab->elf.splt->size != 0 |
16889 | && htab->elf.splt->output_section != bfd_abs_section_ptr) | |
5d1634d7 AM |
16890 | { |
16891 | /* Set .plt entry size. */ | |
33e44f2e | 16892 | elf_section_data (htab->elf.splt->output_section)->this_hdr.sh_entsize |
b9e5796b | 16893 | = PLT_ENTRY_SIZE (htab); |
5d1634d7 AM |
16894 | } |
16895 | ||
84f5d08e AM |
16896 | /* brlt is SEC_LINKER_CREATED, so we need to write out relocs for |
16897 | brlt ourselves if emitrelocations. */ | |
16898 | if (htab->brlt != NULL | |
16899 | && htab->brlt->reloc_count != 0 | |
16900 | && !_bfd_elf_link_output_relocs (output_bfd, | |
16901 | htab->brlt, | |
d4730f92 | 16902 | elf_section_data (htab->brlt)->rela.hdr, |
84f5d08e AM |
16903 | elf_section_data (htab->brlt)->relocs, |
16904 | NULL)) | |
16905 | return FALSE; | |
16906 | ||
176a0d42 AM |
16907 | if (htab->glink != NULL |
16908 | && htab->glink->reloc_count != 0 | |
16909 | && !_bfd_elf_link_output_relocs (output_bfd, | |
16910 | htab->glink, | |
d4730f92 | 16911 | elf_section_data (htab->glink)->rela.hdr, |
176a0d42 AM |
16912 | elf_section_data (htab->glink)->relocs, |
16913 | NULL)) | |
16914 | return FALSE; | |
16915 | ||
da44f4e5 | 16916 | |
df136d64 AM |
16917 | if (htab->glink_eh_frame != NULL |
16918 | && htab->glink_eh_frame->size != 0 | |
16919 | && htab->glink_eh_frame->sec_info_type == SEC_INFO_TYPE_EH_FRAME | |
16920 | && !_bfd_elf_write_section_eh_frame (output_bfd, info, | |
16921 | htab->glink_eh_frame, | |
16922 | htab->glink_eh_frame->contents)) | |
16923 | return FALSE; | |
58d180e8 | 16924 | |
e717da7e | 16925 | /* We need to handle writing out multiple GOT sections ourselves, |
7b53ace3 AM |
16926 | since we didn't add them to DYNOBJ. We know dynobj is the first |
16927 | bfd. */ | |
c72f2fb2 | 16928 | while ((dynobj = dynobj->link.next) != NULL) |
e717da7e AM |
16929 | { |
16930 | asection *s; | |
7b53ace3 | 16931 | |
0c8d6e5c | 16932 | if (!is_ppc64_elf (dynobj)) |
7b53ace3 AM |
16933 | continue; |
16934 | ||
e717da7e AM |
16935 | s = ppc64_elf_tdata (dynobj)->got; |
16936 | if (s != NULL | |
eea6121a | 16937 | && s->size != 0 |
e717da7e AM |
16938 | && s->output_section != bfd_abs_section_ptr |
16939 | && !bfd_set_section_contents (output_bfd, s->output_section, | |
16940 | s->contents, s->output_offset, | |
eea6121a | 16941 | s->size)) |
e717da7e AM |
16942 | return FALSE; |
16943 | s = ppc64_elf_tdata (dynobj)->relgot; | |
16944 | if (s != NULL | |
eea6121a | 16945 | && s->size != 0 |
e717da7e AM |
16946 | && s->output_section != bfd_abs_section_ptr |
16947 | && !bfd_set_section_contents (output_bfd, s->output_section, | |
16948 | s->contents, s->output_offset, | |
eea6121a | 16949 | s->size)) |
e717da7e AM |
16950 | return FALSE; |
16951 | } | |
f6c52c13 | 16952 | |
b34976b6 | 16953 | return TRUE; |
5bd4f169 AM |
16954 | } |
16955 | ||
5bd4f169 | 16956 | #include "elf64-target.h" |
7b8e7dad AM |
16957 | |
16958 | /* FreeBSD support */ | |
16959 | ||
16960 | #undef TARGET_LITTLE_SYM | |
16961 | #undef TARGET_LITTLE_NAME | |
16962 | ||
16963 | #undef TARGET_BIG_SYM | |
6d00b590 | 16964 | #define TARGET_BIG_SYM powerpc_elf64_fbsd_vec |
7b8e7dad AM |
16965 | #undef TARGET_BIG_NAME |
16966 | #define TARGET_BIG_NAME "elf64-powerpc-freebsd" | |
16967 | ||
16968 | #undef ELF_OSABI | |
16969 | #define ELF_OSABI ELFOSABI_FREEBSD | |
16970 | ||
16971 | #undef elf64_bed | |
16972 | #define elf64_bed elf64_powerpc_fbsd_bed | |
16973 | ||
16974 | #include "elf64-target.h" |