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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 AM |
166 | #define ADDI_R11_R11 0x396b0000 /* addi %r11,%r11,off@l */ |
167 | #define ADDIS_R2_R2 0x3c420000 /* addis %r2,%r2,off@ha */ | |
168 | #define ADDI_R2_R2 0x38420000 /* addi %r2,%r2,off@l */ | |
169 | ||
170 | #define XOR_R2_R12_R12 0x7d826278 /* xor %r2,%r12,%r12 */ | |
171 | #define ADD_R11_R11_R2 0x7d6b1214 /* add %r11,%r11,%r2 */ | |
172 | #define XOR_R11_R12_R12 0x7d8b6278 /* xor %r11,%r12,%r12 */ | |
173 | #define ADD_R2_R2_R11 0x7c425a14 /* add %r2,%r2,%r11 */ | |
174 | #define CMPLDI_R2_0 0x28220000 /* cmpldi %r2,0 */ | |
175 | #define BNECTR 0x4ca20420 /* bnectr+ */ | |
176 | #define BNECTR_P4 0x4ce20420 /* bnectr+ */ | |
794e51c0 | 177 | |
71a39c98 | 178 | #define LD_R12_0R2 0xe9820000 /* ld %r12,xxx+0(%r2) */ |
ac2df442 | 179 | #define LD_R11_0R2 0xe9620000 /* ld %r11,xxx+0(%r2) */ |
07d6d2b8 | 180 | #define LD_R2_0R2 0xe8420000 /* ld %r2,xxx+0(%r2) */ |
ac2df442 | 181 | |
07d6d2b8 AM |
182 | #define LD_R2_0R1 0xe8410000 /* ld %r2,0(%r1) */ |
183 | #define LD_R2_0R12 0xe84c0000 /* ld %r2,0(%r12) */ | |
184 | #define ADD_R2_R2_R12 0x7c426214 /* add %r2,%r2,%r12 */ | |
ad8e1ba5 | 185 | |
07d6d2b8 | 186 | #define LIS_R2 0x3c400000 /* lis %r2,xxx@ha */ |
006589cf AM |
187 | #define ADDIS_R2_R12 0x3c4c0000 /* addis %r2,%r12,xxx@ha */ |
188 | #define ADDIS_R12_R2 0x3d820000 /* addis %r12,%r2,xxx@ha */ | |
a345bc8d | 189 | #define ADDIS_R12_R12 0x3d8c0000 /* addis %r12,%r12,xxx@ha */ |
07d6d2b8 | 190 | #define LD_R12_0R12 0xe98c0000 /* ld %r12,xxx@l(%r12) */ |
a345bc8d | 191 | |
9e390558 AM |
192 | /* __glink_PLTresolve stub instructions. We enter with the index in R0. */ |
193 | #define GLINK_PLTRESOLVE_SIZE(htab) \ | |
407aa07c | 194 | (8u + (htab->opd_abi ? 11 * 4 : 14 * 4)) |
ee4bf8d2 AM |
195 | /* 0: */ |
196 | /* .quad plt0-1f */ | |
197 | /* __glink: */ | |
198 | #define MFLR_R12 0x7d8802a6 /* mflr %12 */ | |
199 | #define BCL_20_31 0x429f0005 /* bcl 20,31,1f */ | |
200 | /* 1: */ | |
201 | #define MFLR_R11 0x7d6802a6 /* mflr %11 */ | |
71a39c98 | 202 | /* ld %2,(0b-1b)(%11) */ |
ee4bf8d2 | 203 | #define MTLR_R12 0x7d8803a6 /* mtlr %12 */ |
71a39c98 AM |
204 | #define ADD_R11_R2_R11 0x7d625a14 /* add %11,%2,%11 */ |
205 | /* ld %12,0(%11) */ | |
206 | /* ld %2,8(%11) */ | |
207 | /* mtctr %12 */ | |
208 | /* ld %11,16(%11) */ | |
ee4bf8d2 | 209 | /* bctr */ |
b9e5796b AM |
210 | #define MFLR_R0 0x7c0802a6 /* mflr %r0 */ |
211 | #define MTLR_R0 0x7c0803a6 /* mtlr %r0 */ | |
212 | #define SUB_R12_R12_R11 0x7d8b6050 /* subf %r12,%r11,%r12 */ | |
213 | #define ADDI_R0_R12 0x380c0000 /* addi %r0,%r12,0 */ | |
214 | #define SRDI_R0_R0_2 0x7800f082 /* rldicl %r0,%r0,62,2 */ | |
5d1634d7 AM |
215 | |
216 | /* Pad with this. */ | |
217 | #define NOP 0x60000000 | |
218 | ||
721956f4 AM |
219 | /* Some other nops. */ |
220 | #define CROR_151515 0x4def7b82 | |
221 | #define CROR_313131 0x4ffffb82 | |
222 | ||
cedb70c5 | 223 | /* .glink entries for the first 32k functions are two instructions. */ |
5d1634d7 AM |
224 | #define LI_R0_0 0x38000000 /* li %r0,0 */ |
225 | #define B_DOT 0x48000000 /* b . */ | |
226 | ||
227 | /* After that, we need two instructions to load the index, followed by | |
228 | a branch. */ | |
229 | #define LIS_R0_0 0x3c000000 /* lis %r0,0 */ | |
10ed1bba | 230 | #define ORI_R0_R0_0 0x60000000 /* ori %r0,%r0,0 */ |
41bd81ab | 231 | |
deb0e272 AM |
232 | /* Instructions used by the save and restore reg functions. */ |
233 | #define STD_R0_0R1 0xf8010000 /* std %r0,0(%r1) */ | |
234 | #define STD_R0_0R12 0xf80c0000 /* std %r0,0(%r12) */ | |
235 | #define LD_R0_0R1 0xe8010000 /* ld %r0,0(%r1) */ | |
236 | #define LD_R0_0R12 0xe80c0000 /* ld %r0,0(%r12) */ | |
82bd7b59 AM |
237 | #define STFD_FR0_0R1 0xd8010000 /* stfd %fr0,0(%r1) */ |
238 | #define LFD_FR0_0R1 0xc8010000 /* lfd %fr0,0(%r1) */ | |
deb0e272 AM |
239 | #define LI_R12_0 0x39800000 /* li %r12,0 */ |
240 | #define STVX_VR0_R12_R0 0x7c0c01ce /* stvx %v0,%r12,%r0 */ | |
241 | #define LVX_VR0_R12_R0 0x7c0c00ce /* lvx %v0,%r12,%r0 */ | |
242 | #define MTLR_R0 0x7c0803a6 /* mtlr %r0 */ | |
82bd7b59 AM |
243 | #define BLR 0x4e800020 /* blr */ |
244 | ||
41bd81ab AM |
245 | /* Since .opd is an array of descriptors and each entry will end up |
246 | with identical R_PPC64_RELATIVE relocs, there is really no need to | |
247 | propagate .opd relocs; The dynamic linker should be taught to | |
1e2f5b6e | 248 | relocate .opd without reloc entries. */ |
41bd81ab AM |
249 | #ifndef NO_OPD_RELOCS |
250 | #define NO_OPD_RELOCS 0 | |
251 | #endif | |
810d4e75 | 252 | |
a4b6fadd AM |
253 | #ifndef ARRAY_SIZE |
254 | #define ARRAY_SIZE(a) (sizeof (a) / sizeof ((a)[0])) | |
255 | #endif | |
256 | ||
810d4e75 AM |
257 | static inline int |
258 | abiversion (bfd *abfd) | |
259 | { | |
260 | return elf_elfheader (abfd)->e_flags & EF_PPC64_ABI; | |
261 | } | |
262 | ||
263 | static inline void | |
264 | set_abiversion (bfd *abfd, int ver) | |
265 | { | |
266 | elf_elfheader (abfd)->e_flags &= ~EF_PPC64_ABI; | |
267 | elf_elfheader (abfd)->e_flags |= ver & EF_PPC64_ABI; | |
268 | } | |
5bd4f169 | 269 | \f |
f5e87a1d | 270 | #define ONES(n) (((bfd_vma) 1 << ((n) - 1) << 1) - 1) |
b34976b6 | 271 | |
5bd4f169 | 272 | /* Relocation HOWTO's. */ |
04c9666a | 273 | static reloc_howto_type *ppc64_elf_howto_table[(int) R_PPC64_max]; |
5bd4f169 | 274 | |
f3185997 NC |
275 | static reloc_howto_type ppc64_elf_howto_raw[] = |
276 | { | |
5bd4f169 AM |
277 | /* This reloc does nothing. */ |
278 | HOWTO (R_PPC64_NONE, /* type */ | |
279 | 0, /* rightshift */ | |
6346d5ca AM |
280 | 3, /* size (0 = byte, 1 = short, 2 = long) */ |
281 | 0, /* bitsize */ | |
b34976b6 | 282 | FALSE, /* pc_relative */ |
5bd4f169 | 283 | 0, /* bitpos */ |
f5e87a1d | 284 | complain_overflow_dont, /* complain_on_overflow */ |
5bd4f169 AM |
285 | bfd_elf_generic_reloc, /* special_function */ |
286 | "R_PPC64_NONE", /* name */ | |
b34976b6 | 287 | FALSE, /* partial_inplace */ |
d006db6c | 288 | 0, /* src_mask */ |
5bd4f169 | 289 | 0, /* dst_mask */ |
b34976b6 | 290 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
291 | |
292 | /* A standard 32 bit relocation. */ | |
293 | HOWTO (R_PPC64_ADDR32, /* type */ | |
294 | 0, /* rightshift */ | |
295 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
296 | 32, /* bitsize */ | |
b34976b6 | 297 | FALSE, /* pc_relative */ |
5bd4f169 AM |
298 | 0, /* bitpos */ |
299 | complain_overflow_bitfield, /* complain_on_overflow */ | |
300 | bfd_elf_generic_reloc, /* special_function */ | |
301 | "R_PPC64_ADDR32", /* name */ | |
b34976b6 | 302 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
303 | 0, /* src_mask */ |
304 | 0xffffffff, /* dst_mask */ | |
b34976b6 | 305 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
306 | |
307 | /* An absolute 26 bit branch; the lower two bits must be zero. | |
308 | FIXME: we don't check that, we just clear them. */ | |
309 | HOWTO (R_PPC64_ADDR24, /* type */ | |
310 | 0, /* rightshift */ | |
311 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
312 | 26, /* bitsize */ | |
b34976b6 | 313 | FALSE, /* pc_relative */ |
5bd4f169 AM |
314 | 0, /* bitpos */ |
315 | complain_overflow_bitfield, /* complain_on_overflow */ | |
316 | bfd_elf_generic_reloc, /* special_function */ | |
317 | "R_PPC64_ADDR24", /* name */ | |
b34976b6 | 318 | FALSE, /* partial_inplace */ |
d006db6c | 319 | 0, /* src_mask */ |
f5e87a1d | 320 | 0x03fffffc, /* dst_mask */ |
b34976b6 | 321 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
322 | |
323 | /* A standard 16 bit relocation. */ | |
324 | HOWTO (R_PPC64_ADDR16, /* type */ | |
325 | 0, /* rightshift */ | |
326 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
327 | 16, /* bitsize */ | |
b34976b6 | 328 | FALSE, /* pc_relative */ |
5bd4f169 AM |
329 | 0, /* bitpos */ |
330 | complain_overflow_bitfield, /* complain_on_overflow */ | |
331 | bfd_elf_generic_reloc, /* special_function */ | |
332 | "R_PPC64_ADDR16", /* name */ | |
b34976b6 | 333 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
334 | 0, /* src_mask */ |
335 | 0xffff, /* dst_mask */ | |
b34976b6 | 336 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
337 | |
338 | /* A 16 bit relocation without overflow. */ | |
339 | HOWTO (R_PPC64_ADDR16_LO, /* type */ | |
340 | 0, /* rightshift */ | |
341 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
342 | 16, /* bitsize */ | |
b34976b6 | 343 | FALSE, /* pc_relative */ |
5bd4f169 AM |
344 | 0, /* bitpos */ |
345 | complain_overflow_dont,/* complain_on_overflow */ | |
346 | bfd_elf_generic_reloc, /* special_function */ | |
347 | "R_PPC64_ADDR16_LO", /* name */ | |
b34976b6 | 348 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
349 | 0, /* src_mask */ |
350 | 0xffff, /* dst_mask */ | |
b34976b6 | 351 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
352 | |
353 | /* Bits 16-31 of an address. */ | |
354 | HOWTO (R_PPC64_ADDR16_HI, /* type */ | |
355 | 16, /* rightshift */ | |
356 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
357 | 16, /* bitsize */ | |
b34976b6 | 358 | FALSE, /* pc_relative */ |
5bd4f169 | 359 | 0, /* bitpos */ |
f9c6b907 | 360 | complain_overflow_signed, /* complain_on_overflow */ |
5bd4f169 AM |
361 | bfd_elf_generic_reloc, /* special_function */ |
362 | "R_PPC64_ADDR16_HI", /* name */ | |
b34976b6 | 363 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
364 | 0, /* src_mask */ |
365 | 0xffff, /* dst_mask */ | |
b34976b6 | 366 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
367 | |
368 | /* Bits 16-31 of an address, plus 1 if the contents of the low 16 | |
369 | bits, treated as a signed number, is negative. */ | |
370 | HOWTO (R_PPC64_ADDR16_HA, /* type */ | |
371 | 16, /* rightshift */ | |
372 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
373 | 16, /* bitsize */ | |
b34976b6 | 374 | FALSE, /* pc_relative */ |
5bd4f169 | 375 | 0, /* bitpos */ |
f9c6b907 | 376 | complain_overflow_signed, /* complain_on_overflow */ |
805fc799 | 377 | ppc64_elf_ha_reloc, /* special_function */ |
5bd4f169 | 378 | "R_PPC64_ADDR16_HA", /* name */ |
b34976b6 | 379 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
380 | 0, /* src_mask */ |
381 | 0xffff, /* dst_mask */ | |
b34976b6 | 382 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
383 | |
384 | /* An absolute 16 bit branch; the lower two bits must be zero. | |
385 | FIXME: we don't check that, we just clear them. */ | |
386 | HOWTO (R_PPC64_ADDR14, /* type */ | |
387 | 0, /* rightshift */ | |
388 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
389 | 16, /* bitsize */ | |
b34976b6 | 390 | FALSE, /* pc_relative */ |
5bd4f169 | 391 | 0, /* bitpos */ |
b80eed39 | 392 | complain_overflow_signed, /* complain_on_overflow */ |
2441e016 | 393 | ppc64_elf_branch_reloc, /* special_function */ |
5bd4f169 | 394 | "R_PPC64_ADDR14", /* name */ |
b34976b6 | 395 | FALSE, /* partial_inplace */ |
d006db6c | 396 | 0, /* src_mask */ |
f5e87a1d | 397 | 0x0000fffc, /* dst_mask */ |
b34976b6 | 398 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
399 | |
400 | /* An absolute 16 bit branch, for which bit 10 should be set to | |
401 | indicate that the branch is expected to be taken. The lower two | |
402 | bits must be zero. */ | |
403 | HOWTO (R_PPC64_ADDR14_BRTAKEN, /* type */ | |
404 | 0, /* rightshift */ | |
405 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
406 | 16, /* bitsize */ | |
b34976b6 | 407 | FALSE, /* pc_relative */ |
5bd4f169 | 408 | 0, /* bitpos */ |
b80eed39 | 409 | complain_overflow_signed, /* complain_on_overflow */ |
805fc799 | 410 | ppc64_elf_brtaken_reloc, /* special_function */ |
5bd4f169 | 411 | "R_PPC64_ADDR14_BRTAKEN",/* name */ |
b34976b6 | 412 | FALSE, /* partial_inplace */ |
d006db6c | 413 | 0, /* src_mask */ |
f5e87a1d | 414 | 0x0000fffc, /* dst_mask */ |
b34976b6 | 415 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
416 | |
417 | /* An absolute 16 bit branch, for which bit 10 should be set to | |
418 | indicate that the branch is not expected to be taken. The lower | |
419 | two bits must be zero. */ | |
420 | HOWTO (R_PPC64_ADDR14_BRNTAKEN, /* type */ | |
421 | 0, /* rightshift */ | |
422 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
423 | 16, /* bitsize */ | |
b34976b6 | 424 | FALSE, /* pc_relative */ |
5bd4f169 | 425 | 0, /* bitpos */ |
b80eed39 | 426 | complain_overflow_signed, /* complain_on_overflow */ |
805fc799 | 427 | ppc64_elf_brtaken_reloc, /* special_function */ |
5bd4f169 | 428 | "R_PPC64_ADDR14_BRNTAKEN",/* name */ |
b34976b6 | 429 | FALSE, /* partial_inplace */ |
d006db6c | 430 | 0, /* src_mask */ |
f5e87a1d | 431 | 0x0000fffc, /* dst_mask */ |
b34976b6 | 432 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
433 | |
434 | /* A relative 26 bit branch; the lower two bits must be zero. */ | |
435 | HOWTO (R_PPC64_REL24, /* type */ | |
436 | 0, /* rightshift */ | |
437 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
438 | 26, /* bitsize */ | |
b34976b6 | 439 | TRUE, /* pc_relative */ |
5bd4f169 AM |
440 | 0, /* bitpos */ |
441 | complain_overflow_signed, /* complain_on_overflow */ | |
2441e016 | 442 | ppc64_elf_branch_reloc, /* special_function */ |
5bd4f169 | 443 | "R_PPC64_REL24", /* name */ |
b34976b6 | 444 | FALSE, /* partial_inplace */ |
d006db6c | 445 | 0, /* src_mask */ |
f5e87a1d | 446 | 0x03fffffc, /* dst_mask */ |
b34976b6 | 447 | TRUE), /* pcrel_offset */ |
5bd4f169 AM |
448 | |
449 | /* A relative 16 bit branch; the lower two bits must be zero. */ | |
450 | HOWTO (R_PPC64_REL14, /* type */ | |
451 | 0, /* rightshift */ | |
452 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
453 | 16, /* bitsize */ | |
b34976b6 | 454 | TRUE, /* pc_relative */ |
5bd4f169 AM |
455 | 0, /* bitpos */ |
456 | complain_overflow_signed, /* complain_on_overflow */ | |
2441e016 | 457 | ppc64_elf_branch_reloc, /* special_function */ |
5bd4f169 | 458 | "R_PPC64_REL14", /* name */ |
b34976b6 | 459 | FALSE, /* partial_inplace */ |
d006db6c | 460 | 0, /* src_mask */ |
f5e87a1d | 461 | 0x0000fffc, /* dst_mask */ |
b34976b6 | 462 | TRUE), /* pcrel_offset */ |
5bd4f169 AM |
463 | |
464 | /* A relative 16 bit branch. Bit 10 should be set to indicate that | |
465 | the branch is expected to be taken. The lower two bits must be | |
466 | zero. */ | |
467 | HOWTO (R_PPC64_REL14_BRTAKEN, /* type */ | |
468 | 0, /* rightshift */ | |
469 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
470 | 16, /* bitsize */ | |
b34976b6 | 471 | TRUE, /* pc_relative */ |
5bd4f169 AM |
472 | 0, /* bitpos */ |
473 | complain_overflow_signed, /* complain_on_overflow */ | |
805fc799 | 474 | ppc64_elf_brtaken_reloc, /* special_function */ |
5bd4f169 | 475 | "R_PPC64_REL14_BRTAKEN", /* name */ |
b34976b6 | 476 | FALSE, /* partial_inplace */ |
d006db6c | 477 | 0, /* src_mask */ |
f5e87a1d | 478 | 0x0000fffc, /* dst_mask */ |
b34976b6 | 479 | TRUE), /* pcrel_offset */ |
5bd4f169 AM |
480 | |
481 | /* A relative 16 bit branch. Bit 10 should be set to indicate that | |
482 | the branch is not expected to be taken. The lower two bits must | |
483 | be zero. */ | |
484 | HOWTO (R_PPC64_REL14_BRNTAKEN, /* type */ | |
485 | 0, /* rightshift */ | |
486 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
487 | 16, /* bitsize */ | |
b34976b6 | 488 | TRUE, /* pc_relative */ |
5bd4f169 AM |
489 | 0, /* bitpos */ |
490 | complain_overflow_signed, /* complain_on_overflow */ | |
805fc799 | 491 | ppc64_elf_brtaken_reloc, /* special_function */ |
5bd4f169 | 492 | "R_PPC64_REL14_BRNTAKEN",/* name */ |
b34976b6 | 493 | FALSE, /* partial_inplace */ |
d006db6c | 494 | 0, /* src_mask */ |
f5e87a1d | 495 | 0x0000fffc, /* dst_mask */ |
b34976b6 | 496 | TRUE), /* pcrel_offset */ |
5bd4f169 AM |
497 | |
498 | /* Like R_PPC64_ADDR16, but referring to the GOT table entry for the | |
499 | symbol. */ | |
500 | HOWTO (R_PPC64_GOT16, /* type */ | |
501 | 0, /* rightshift */ | |
502 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
503 | 16, /* bitsize */ | |
b34976b6 | 504 | FALSE, /* pc_relative */ |
5bd4f169 AM |
505 | 0, /* bitpos */ |
506 | complain_overflow_signed, /* complain_on_overflow */ | |
805fc799 | 507 | ppc64_elf_unhandled_reloc, /* special_function */ |
5bd4f169 | 508 | "R_PPC64_GOT16", /* name */ |
b34976b6 | 509 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
510 | 0, /* src_mask */ |
511 | 0xffff, /* dst_mask */ | |
b34976b6 | 512 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
513 | |
514 | /* Like R_PPC64_ADDR16_LO, but referring to the GOT table entry for | |
515 | the symbol. */ | |
516 | HOWTO (R_PPC64_GOT16_LO, /* type */ | |
517 | 0, /* rightshift */ | |
518 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
519 | 16, /* bitsize */ | |
b34976b6 | 520 | FALSE, /* pc_relative */ |
5bd4f169 AM |
521 | 0, /* bitpos */ |
522 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 523 | ppc64_elf_unhandled_reloc, /* special_function */ |
5bd4f169 | 524 | "R_PPC64_GOT16_LO", /* name */ |
b34976b6 | 525 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
526 | 0, /* src_mask */ |
527 | 0xffff, /* dst_mask */ | |
b34976b6 | 528 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
529 | |
530 | /* Like R_PPC64_ADDR16_HI, but referring to the GOT table entry for | |
531 | the symbol. */ | |
532 | HOWTO (R_PPC64_GOT16_HI, /* type */ | |
533 | 16, /* rightshift */ | |
534 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
535 | 16, /* bitsize */ | |
b34976b6 | 536 | FALSE, /* pc_relative */ |
5bd4f169 | 537 | 0, /* bitpos */ |
f9c6b907 | 538 | complain_overflow_signed,/* complain_on_overflow */ |
805fc799 | 539 | ppc64_elf_unhandled_reloc, /* special_function */ |
5bd4f169 | 540 | "R_PPC64_GOT16_HI", /* name */ |
b34976b6 | 541 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
542 | 0, /* src_mask */ |
543 | 0xffff, /* dst_mask */ | |
b34976b6 | 544 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
545 | |
546 | /* Like R_PPC64_ADDR16_HA, but referring to the GOT table entry for | |
547 | the symbol. */ | |
548 | HOWTO (R_PPC64_GOT16_HA, /* type */ | |
549 | 16, /* rightshift */ | |
550 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
551 | 16, /* bitsize */ | |
b34976b6 | 552 | FALSE, /* pc_relative */ |
5bd4f169 | 553 | 0, /* bitpos */ |
f9c6b907 | 554 | complain_overflow_signed,/* complain_on_overflow */ |
805fc799 | 555 | ppc64_elf_unhandled_reloc, /* special_function */ |
5bd4f169 | 556 | "R_PPC64_GOT16_HA", /* name */ |
b34976b6 | 557 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
558 | 0, /* src_mask */ |
559 | 0xffff, /* dst_mask */ | |
b34976b6 | 560 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
561 | |
562 | /* This is used only by the dynamic linker. The symbol should exist | |
563 | both in the object being run and in some shared library. The | |
564 | dynamic linker copies the data addressed by the symbol from the | |
565 | shared library into the object, because the object being | |
566 | run has to have the data at some particular address. */ | |
567 | HOWTO (R_PPC64_COPY, /* type */ | |
568 | 0, /* rightshift */ | |
f5e87a1d AM |
569 | 0, /* this one is variable size */ |
570 | 0, /* bitsize */ | |
b34976b6 | 571 | FALSE, /* pc_relative */ |
5bd4f169 | 572 | 0, /* bitpos */ |
f5e87a1d AM |
573 | complain_overflow_dont, /* complain_on_overflow */ |
574 | ppc64_elf_unhandled_reloc, /* special_function */ | |
5bd4f169 | 575 | "R_PPC64_COPY", /* name */ |
b34976b6 | 576 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
577 | 0, /* src_mask */ |
578 | 0, /* dst_mask */ | |
b34976b6 | 579 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
580 | |
581 | /* Like R_PPC64_ADDR64, but used when setting global offset table | |
582 | entries. */ | |
583 | HOWTO (R_PPC64_GLOB_DAT, /* type */ | |
584 | 0, /* rightshift */ | |
585 | 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */ | |
586 | 64, /* bitsize */ | |
b34976b6 | 587 | FALSE, /* pc_relative */ |
5bd4f169 AM |
588 | 0, /* bitpos */ |
589 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 590 | ppc64_elf_unhandled_reloc, /* special_function */ |
5bd4f169 | 591 | "R_PPC64_GLOB_DAT", /* name */ |
b34976b6 | 592 | FALSE, /* partial_inplace */ |
5bd4f169 | 593 | 0, /* src_mask */ |
f5e87a1d | 594 | ONES (64), /* dst_mask */ |
b34976b6 | 595 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
596 | |
597 | /* Created by the link editor. Marks a procedure linkage table | |
598 | entry for a symbol. */ | |
599 | HOWTO (R_PPC64_JMP_SLOT, /* type */ | |
600 | 0, /* rightshift */ | |
601 | 0, /* size (0 = byte, 1 = short, 2 = long) */ | |
602 | 0, /* bitsize */ | |
b34976b6 | 603 | FALSE, /* pc_relative */ |
5bd4f169 AM |
604 | 0, /* bitpos */ |
605 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 606 | ppc64_elf_unhandled_reloc, /* special_function */ |
5bd4f169 | 607 | "R_PPC64_JMP_SLOT", /* name */ |
b34976b6 | 608 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
609 | 0, /* src_mask */ |
610 | 0, /* dst_mask */ | |
b34976b6 | 611 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
612 | |
613 | /* Used only by the dynamic linker. When the object is run, this | |
614 | doubleword64 is set to the load address of the object, plus the | |
615 | addend. */ | |
616 | HOWTO (R_PPC64_RELATIVE, /* type */ | |
617 | 0, /* rightshift */ | |
618 | 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */ | |
619 | 64, /* bitsize */ | |
b34976b6 | 620 | FALSE, /* pc_relative */ |
5bd4f169 AM |
621 | 0, /* bitpos */ |
622 | complain_overflow_dont, /* complain_on_overflow */ | |
623 | bfd_elf_generic_reloc, /* special_function */ | |
624 | "R_PPC64_RELATIVE", /* name */ | |
b34976b6 | 625 | FALSE, /* partial_inplace */ |
5bd4f169 | 626 | 0, /* src_mask */ |
f5e87a1d | 627 | ONES (64), /* dst_mask */ |
b34976b6 | 628 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
629 | |
630 | /* Like R_PPC64_ADDR32, but may be unaligned. */ | |
631 | HOWTO (R_PPC64_UADDR32, /* type */ | |
632 | 0, /* rightshift */ | |
633 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
634 | 32, /* bitsize */ | |
b34976b6 | 635 | FALSE, /* pc_relative */ |
5bd4f169 AM |
636 | 0, /* bitpos */ |
637 | complain_overflow_bitfield, /* complain_on_overflow */ | |
638 | bfd_elf_generic_reloc, /* special_function */ | |
639 | "R_PPC64_UADDR32", /* name */ | |
b34976b6 | 640 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
641 | 0, /* src_mask */ |
642 | 0xffffffff, /* dst_mask */ | |
b34976b6 | 643 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
644 | |
645 | /* Like R_PPC64_ADDR16, but may be unaligned. */ | |
646 | HOWTO (R_PPC64_UADDR16, /* type */ | |
647 | 0, /* rightshift */ | |
648 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
649 | 16, /* bitsize */ | |
b34976b6 | 650 | FALSE, /* pc_relative */ |
5bd4f169 AM |
651 | 0, /* bitpos */ |
652 | complain_overflow_bitfield, /* complain_on_overflow */ | |
653 | bfd_elf_generic_reloc, /* special_function */ | |
654 | "R_PPC64_UADDR16", /* name */ | |
b34976b6 | 655 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
656 | 0, /* src_mask */ |
657 | 0xffff, /* dst_mask */ | |
b34976b6 | 658 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
659 | |
660 | /* 32-bit PC relative. */ | |
661 | HOWTO (R_PPC64_REL32, /* type */ | |
662 | 0, /* rightshift */ | |
663 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
664 | 32, /* bitsize */ | |
b34976b6 | 665 | TRUE, /* pc_relative */ |
5bd4f169 | 666 | 0, /* bitpos */ |
5bd4f169 AM |
667 | complain_overflow_signed, /* complain_on_overflow */ |
668 | bfd_elf_generic_reloc, /* special_function */ | |
669 | "R_PPC64_REL32", /* name */ | |
b34976b6 | 670 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
671 | 0, /* src_mask */ |
672 | 0xffffffff, /* dst_mask */ | |
b34976b6 | 673 | TRUE), /* pcrel_offset */ |
5bd4f169 | 674 | |
10ed1bba | 675 | /* 32-bit relocation to the symbol's procedure linkage table. */ |
5bd4f169 AM |
676 | HOWTO (R_PPC64_PLT32, /* type */ |
677 | 0, /* rightshift */ | |
678 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
679 | 32, /* bitsize */ | |
b34976b6 | 680 | FALSE, /* pc_relative */ |
5bd4f169 AM |
681 | 0, /* bitpos */ |
682 | complain_overflow_bitfield, /* complain_on_overflow */ | |
805fc799 | 683 | ppc64_elf_unhandled_reloc, /* special_function */ |
5bd4f169 | 684 | "R_PPC64_PLT32", /* name */ |
b34976b6 | 685 | FALSE, /* partial_inplace */ |
5bd4f169 | 686 | 0, /* src_mask */ |
f5e87a1d | 687 | 0xffffffff, /* dst_mask */ |
b34976b6 | 688 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
689 | |
690 | /* 32-bit PC relative relocation to the symbol's procedure linkage table. | |
691 | FIXME: R_PPC64_PLTREL32 not supported. */ | |
692 | HOWTO (R_PPC64_PLTREL32, /* type */ | |
693 | 0, /* rightshift */ | |
694 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
695 | 32, /* bitsize */ | |
b34976b6 | 696 | TRUE, /* pc_relative */ |
5bd4f169 AM |
697 | 0, /* bitpos */ |
698 | complain_overflow_signed, /* complain_on_overflow */ | |
3ce51288 | 699 | ppc64_elf_unhandled_reloc, /* special_function */ |
5bd4f169 | 700 | "R_PPC64_PLTREL32", /* name */ |
b34976b6 | 701 | FALSE, /* partial_inplace */ |
5bd4f169 | 702 | 0, /* src_mask */ |
f5e87a1d | 703 | 0xffffffff, /* dst_mask */ |
b34976b6 | 704 | TRUE), /* pcrel_offset */ |
5bd4f169 AM |
705 | |
706 | /* Like R_PPC64_ADDR16_LO, but referring to the PLT table entry for | |
707 | the symbol. */ | |
708 | HOWTO (R_PPC64_PLT16_LO, /* type */ | |
709 | 0, /* rightshift */ | |
710 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
711 | 16, /* bitsize */ | |
b34976b6 | 712 | FALSE, /* pc_relative */ |
5bd4f169 AM |
713 | 0, /* bitpos */ |
714 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 715 | ppc64_elf_unhandled_reloc, /* special_function */ |
5bd4f169 | 716 | "R_PPC64_PLT16_LO", /* name */ |
b34976b6 | 717 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
718 | 0, /* src_mask */ |
719 | 0xffff, /* dst_mask */ | |
b34976b6 | 720 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
721 | |
722 | /* Like R_PPC64_ADDR16_HI, but referring to the PLT table entry for | |
723 | the symbol. */ | |
724 | HOWTO (R_PPC64_PLT16_HI, /* type */ | |
725 | 16, /* rightshift */ | |
726 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
727 | 16, /* bitsize */ | |
b34976b6 | 728 | FALSE, /* pc_relative */ |
5bd4f169 | 729 | 0, /* bitpos */ |
f9c6b907 | 730 | complain_overflow_signed, /* complain_on_overflow */ |
805fc799 | 731 | ppc64_elf_unhandled_reloc, /* special_function */ |
5bd4f169 | 732 | "R_PPC64_PLT16_HI", /* name */ |
b34976b6 | 733 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
734 | 0, /* src_mask */ |
735 | 0xffff, /* dst_mask */ | |
b34976b6 | 736 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
737 | |
738 | /* Like R_PPC64_ADDR16_HA, but referring to the PLT table entry for | |
739 | the symbol. */ | |
740 | HOWTO (R_PPC64_PLT16_HA, /* type */ | |
741 | 16, /* rightshift */ | |
742 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
743 | 16, /* bitsize */ | |
b34976b6 | 744 | FALSE, /* pc_relative */ |
5bd4f169 | 745 | 0, /* bitpos */ |
f9c6b907 | 746 | complain_overflow_signed, /* complain_on_overflow */ |
805fc799 | 747 | ppc64_elf_unhandled_reloc, /* special_function */ |
5bd4f169 | 748 | "R_PPC64_PLT16_HA", /* name */ |
b34976b6 | 749 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
750 | 0, /* src_mask */ |
751 | 0xffff, /* dst_mask */ | |
b34976b6 | 752 | FALSE), /* pcrel_offset */ |
5bd4f169 | 753 | |
c061c2d8 | 754 | /* 16-bit section relative relocation. */ |
5bd4f169 AM |
755 | HOWTO (R_PPC64_SECTOFF, /* type */ |
756 | 0, /* rightshift */ | |
c061c2d8 AM |
757 | 1, /* size (0 = byte, 1 = short, 2 = long) */ |
758 | 16, /* bitsize */ | |
b34976b6 | 759 | FALSE, /* pc_relative */ |
5bd4f169 | 760 | 0, /* bitpos */ |
b80eed39 | 761 | complain_overflow_signed, /* complain_on_overflow */ |
805fc799 | 762 | ppc64_elf_sectoff_reloc, /* special_function */ |
5bd4f169 | 763 | "R_PPC64_SECTOFF", /* name */ |
b34976b6 | 764 | FALSE, /* partial_inplace */ |
5bd4f169 | 765 | 0, /* src_mask */ |
c061c2d8 | 766 | 0xffff, /* dst_mask */ |
b34976b6 | 767 | FALSE), /* pcrel_offset */ |
5bd4f169 | 768 | |
c061c2d8 | 769 | /* Like R_PPC64_SECTOFF, but no overflow warning. */ |
5bd4f169 AM |
770 | HOWTO (R_PPC64_SECTOFF_LO, /* type */ |
771 | 0, /* rightshift */ | |
772 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
773 | 16, /* bitsize */ | |
b34976b6 | 774 | FALSE, /* pc_relative */ |
5bd4f169 AM |
775 | 0, /* bitpos */ |
776 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 777 | ppc64_elf_sectoff_reloc, /* special_function */ |
5bd4f169 | 778 | "R_PPC64_SECTOFF_LO", /* name */ |
b34976b6 | 779 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
780 | 0, /* src_mask */ |
781 | 0xffff, /* dst_mask */ | |
b34976b6 | 782 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
783 | |
784 | /* 16-bit upper half section relative relocation. */ | |
785 | HOWTO (R_PPC64_SECTOFF_HI, /* type */ | |
786 | 16, /* rightshift */ | |
787 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
788 | 16, /* bitsize */ | |
b34976b6 | 789 | FALSE, /* pc_relative */ |
5bd4f169 | 790 | 0, /* bitpos */ |
f9c6b907 | 791 | complain_overflow_signed, /* complain_on_overflow */ |
805fc799 | 792 | ppc64_elf_sectoff_reloc, /* special_function */ |
5bd4f169 | 793 | "R_PPC64_SECTOFF_HI", /* name */ |
b34976b6 | 794 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
795 | 0, /* src_mask */ |
796 | 0xffff, /* dst_mask */ | |
b34976b6 | 797 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
798 | |
799 | /* 16-bit upper half adjusted section relative relocation. */ | |
800 | HOWTO (R_PPC64_SECTOFF_HA, /* type */ | |
801 | 16, /* rightshift */ | |
802 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
803 | 16, /* bitsize */ | |
b34976b6 | 804 | FALSE, /* pc_relative */ |
5bd4f169 | 805 | 0, /* bitpos */ |
f9c6b907 | 806 | complain_overflow_signed, /* complain_on_overflow */ |
805fc799 | 807 | ppc64_elf_sectoff_ha_reloc, /* special_function */ |
5bd4f169 | 808 | "R_PPC64_SECTOFF_HA", /* name */ |
b34976b6 | 809 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
810 | 0, /* src_mask */ |
811 | 0xffff, /* dst_mask */ | |
b34976b6 | 812 | FALSE), /* pcrel_offset */ |
5bd4f169 | 813 | |
04c9666a AM |
814 | /* Like R_PPC64_REL24 without touching the two least significant bits. */ |
815 | HOWTO (R_PPC64_REL30, /* type */ | |
5bd4f169 AM |
816 | 2, /* rightshift */ |
817 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
818 | 30, /* bitsize */ | |
b34976b6 | 819 | TRUE, /* pc_relative */ |
5bd4f169 AM |
820 | 0, /* bitpos */ |
821 | complain_overflow_dont, /* complain_on_overflow */ | |
822 | bfd_elf_generic_reloc, /* special_function */ | |
04c9666a | 823 | "R_PPC64_REL30", /* name */ |
b34976b6 | 824 | FALSE, /* partial_inplace */ |
d006db6c | 825 | 0, /* src_mask */ |
5bd4f169 | 826 | 0xfffffffc, /* dst_mask */ |
b34976b6 | 827 | TRUE), /* pcrel_offset */ |
5bd4f169 AM |
828 | |
829 | /* Relocs in the 64-bit PowerPC ELF ABI, not in the 32-bit ABI. */ | |
830 | ||
831 | /* A standard 64-bit relocation. */ | |
832 | HOWTO (R_PPC64_ADDR64, /* type */ | |
833 | 0, /* rightshift */ | |
834 | 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */ | |
835 | 64, /* bitsize */ | |
b34976b6 | 836 | FALSE, /* pc_relative */ |
5bd4f169 AM |
837 | 0, /* bitpos */ |
838 | complain_overflow_dont, /* complain_on_overflow */ | |
839 | bfd_elf_generic_reloc, /* special_function */ | |
840 | "R_PPC64_ADDR64", /* name */ | |
b34976b6 | 841 | FALSE, /* partial_inplace */ |
5bd4f169 | 842 | 0, /* src_mask */ |
f5e87a1d | 843 | ONES (64), /* dst_mask */ |
b34976b6 | 844 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
845 | |
846 | /* The bits 32-47 of an address. */ | |
847 | HOWTO (R_PPC64_ADDR16_HIGHER, /* type */ | |
848 | 32, /* rightshift */ | |
849 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
850 | 16, /* bitsize */ | |
b34976b6 | 851 | FALSE, /* pc_relative */ |
5bd4f169 AM |
852 | 0, /* bitpos */ |
853 | complain_overflow_dont, /* complain_on_overflow */ | |
854 | bfd_elf_generic_reloc, /* special_function */ | |
855 | "R_PPC64_ADDR16_HIGHER", /* name */ | |
b34976b6 | 856 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
857 | 0, /* src_mask */ |
858 | 0xffff, /* dst_mask */ | |
b34976b6 | 859 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
860 | |
861 | /* The bits 32-47 of an address, plus 1 if the contents of the low | |
862 | 16 bits, treated as a signed number, is negative. */ | |
863 | HOWTO (R_PPC64_ADDR16_HIGHERA, /* type */ | |
864 | 32, /* rightshift */ | |
865 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
866 | 16, /* bitsize */ | |
b34976b6 | 867 | FALSE, /* pc_relative */ |
5bd4f169 AM |
868 | 0, /* bitpos */ |
869 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 870 | ppc64_elf_ha_reloc, /* special_function */ |
5bd4f169 | 871 | "R_PPC64_ADDR16_HIGHERA", /* name */ |
b34976b6 | 872 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
873 | 0, /* src_mask */ |
874 | 0xffff, /* dst_mask */ | |
b34976b6 | 875 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
876 | |
877 | /* The bits 48-63 of an address. */ | |
878 | HOWTO (R_PPC64_ADDR16_HIGHEST,/* type */ | |
879 | 48, /* rightshift */ | |
880 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
881 | 16, /* bitsize */ | |
b34976b6 | 882 | FALSE, /* pc_relative */ |
5bd4f169 AM |
883 | 0, /* bitpos */ |
884 | complain_overflow_dont, /* complain_on_overflow */ | |
885 | bfd_elf_generic_reloc, /* special_function */ | |
886 | "R_PPC64_ADDR16_HIGHEST", /* name */ | |
b34976b6 | 887 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
888 | 0, /* src_mask */ |
889 | 0xffff, /* dst_mask */ | |
b34976b6 | 890 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
891 | |
892 | /* The bits 48-63 of an address, plus 1 if the contents of the low | |
893 | 16 bits, treated as a signed number, is negative. */ | |
894 | HOWTO (R_PPC64_ADDR16_HIGHESTA,/* type */ | |
895 | 48, /* rightshift */ | |
896 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
897 | 16, /* bitsize */ | |
b34976b6 | 898 | FALSE, /* pc_relative */ |
5bd4f169 AM |
899 | 0, /* bitpos */ |
900 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 901 | ppc64_elf_ha_reloc, /* special_function */ |
5bd4f169 | 902 | "R_PPC64_ADDR16_HIGHESTA", /* name */ |
b34976b6 | 903 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
904 | 0, /* src_mask */ |
905 | 0xffff, /* dst_mask */ | |
b34976b6 | 906 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
907 | |
908 | /* Like ADDR64, but may be unaligned. */ | |
909 | HOWTO (R_PPC64_UADDR64, /* type */ | |
910 | 0, /* rightshift */ | |
911 | 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */ | |
912 | 64, /* bitsize */ | |
b34976b6 | 913 | FALSE, /* pc_relative */ |
5bd4f169 AM |
914 | 0, /* bitpos */ |
915 | complain_overflow_dont, /* complain_on_overflow */ | |
916 | bfd_elf_generic_reloc, /* special_function */ | |
917 | "R_PPC64_UADDR64", /* name */ | |
b34976b6 | 918 | FALSE, /* partial_inplace */ |
5bd4f169 | 919 | 0, /* src_mask */ |
f5e87a1d | 920 | ONES (64), /* dst_mask */ |
b34976b6 | 921 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
922 | |
923 | /* 64-bit relative relocation. */ | |
924 | HOWTO (R_PPC64_REL64, /* type */ | |
925 | 0, /* rightshift */ | |
926 | 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */ | |
927 | 64, /* bitsize */ | |
b34976b6 | 928 | TRUE, /* pc_relative */ |
5bd4f169 AM |
929 | 0, /* bitpos */ |
930 | complain_overflow_dont, /* complain_on_overflow */ | |
931 | bfd_elf_generic_reloc, /* special_function */ | |
932 | "R_PPC64_REL64", /* name */ | |
b34976b6 | 933 | FALSE, /* partial_inplace */ |
5bd4f169 | 934 | 0, /* src_mask */ |
f5e87a1d | 935 | ONES (64), /* dst_mask */ |
b34976b6 | 936 | TRUE), /* pcrel_offset */ |
5bd4f169 | 937 | |
cedb70c5 | 938 | /* 64-bit relocation to the symbol's procedure linkage table. */ |
5bd4f169 AM |
939 | HOWTO (R_PPC64_PLT64, /* type */ |
940 | 0, /* rightshift */ | |
941 | 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */ | |
942 | 64, /* bitsize */ | |
b34976b6 | 943 | FALSE, /* pc_relative */ |
5bd4f169 AM |
944 | 0, /* bitpos */ |
945 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 946 | ppc64_elf_unhandled_reloc, /* special_function */ |
5bd4f169 | 947 | "R_PPC64_PLT64", /* name */ |
b34976b6 | 948 | FALSE, /* partial_inplace */ |
5bd4f169 | 949 | 0, /* src_mask */ |
f5e87a1d | 950 | ONES (64), /* dst_mask */ |
b34976b6 | 951 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
952 | |
953 | /* 64-bit PC relative relocation to the symbol's procedure linkage | |
954 | table. */ | |
955 | /* FIXME: R_PPC64_PLTREL64 not supported. */ | |
956 | HOWTO (R_PPC64_PLTREL64, /* type */ | |
957 | 0, /* rightshift */ | |
958 | 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */ | |
959 | 64, /* bitsize */ | |
b34976b6 | 960 | TRUE, /* pc_relative */ |
5bd4f169 AM |
961 | 0, /* bitpos */ |
962 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 963 | ppc64_elf_unhandled_reloc, /* special_function */ |
5bd4f169 | 964 | "R_PPC64_PLTREL64", /* name */ |
b34976b6 | 965 | FALSE, /* partial_inplace */ |
5bd4f169 | 966 | 0, /* src_mask */ |
f5e87a1d | 967 | ONES (64), /* dst_mask */ |
b34976b6 | 968 | TRUE), /* pcrel_offset */ |
5bd4f169 AM |
969 | |
970 | /* 16 bit TOC-relative relocation. */ | |
971 | ||
972 | /* R_PPC64_TOC16 47 half16* S + A - .TOC. */ | |
973 | HOWTO (R_PPC64_TOC16, /* type */ | |
974 | 0, /* rightshift */ | |
975 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
976 | 16, /* bitsize */ | |
b34976b6 | 977 | FALSE, /* pc_relative */ |
5bd4f169 AM |
978 | 0, /* bitpos */ |
979 | complain_overflow_signed, /* complain_on_overflow */ | |
805fc799 | 980 | ppc64_elf_toc_reloc, /* special_function */ |
5bd4f169 | 981 | "R_PPC64_TOC16", /* name */ |
b34976b6 | 982 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
983 | 0, /* src_mask */ |
984 | 0xffff, /* dst_mask */ | |
b34976b6 | 985 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
986 | |
987 | /* 16 bit TOC-relative relocation without overflow. */ | |
988 | ||
989 | /* R_PPC64_TOC16_LO 48 half16 #lo (S + A - .TOC.) */ | |
990 | HOWTO (R_PPC64_TOC16_LO, /* type */ | |
991 | 0, /* rightshift */ | |
992 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
993 | 16, /* bitsize */ | |
b34976b6 | 994 | FALSE, /* pc_relative */ |
5bd4f169 AM |
995 | 0, /* bitpos */ |
996 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 997 | ppc64_elf_toc_reloc, /* special_function */ |
5bd4f169 | 998 | "R_PPC64_TOC16_LO", /* name */ |
b34976b6 | 999 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
1000 | 0, /* src_mask */ |
1001 | 0xffff, /* dst_mask */ | |
b34976b6 | 1002 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
1003 | |
1004 | /* 16 bit TOC-relative relocation, high 16 bits. */ | |
1005 | ||
1006 | /* R_PPC64_TOC16_HI 49 half16 #hi (S + A - .TOC.) */ | |
1007 | HOWTO (R_PPC64_TOC16_HI, /* type */ | |
1008 | 16, /* rightshift */ | |
1009 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1010 | 16, /* bitsize */ | |
b34976b6 | 1011 | FALSE, /* pc_relative */ |
5bd4f169 | 1012 | 0, /* bitpos */ |
f9c6b907 | 1013 | complain_overflow_signed, /* complain_on_overflow */ |
805fc799 | 1014 | ppc64_elf_toc_reloc, /* special_function */ |
5bd4f169 | 1015 | "R_PPC64_TOC16_HI", /* name */ |
b34976b6 | 1016 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
1017 | 0, /* src_mask */ |
1018 | 0xffff, /* dst_mask */ | |
b34976b6 | 1019 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
1020 | |
1021 | /* 16 bit TOC-relative relocation, high 16 bits, plus 1 if the | |
1022 | contents of the low 16 bits, treated as a signed number, is | |
1023 | negative. */ | |
1024 | ||
1025 | /* R_PPC64_TOC16_HA 50 half16 #ha (S + A - .TOC.) */ | |
1026 | HOWTO (R_PPC64_TOC16_HA, /* type */ | |
1027 | 16, /* rightshift */ | |
1028 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1029 | 16, /* bitsize */ | |
b34976b6 | 1030 | FALSE, /* pc_relative */ |
5bd4f169 | 1031 | 0, /* bitpos */ |
f9c6b907 | 1032 | complain_overflow_signed, /* complain_on_overflow */ |
805fc799 | 1033 | ppc64_elf_toc_ha_reloc, /* special_function */ |
5bd4f169 | 1034 | "R_PPC64_TOC16_HA", /* name */ |
b34976b6 | 1035 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
1036 | 0, /* src_mask */ |
1037 | 0xffff, /* dst_mask */ | |
b34976b6 | 1038 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
1039 | |
1040 | /* 64-bit relocation; insert value of TOC base (.TOC.). */ | |
1041 | ||
1042 | /* R_PPC64_TOC 51 doubleword64 .TOC. */ | |
1043 | HOWTO (R_PPC64_TOC, /* type */ | |
1044 | 0, /* rightshift */ | |
1045 | 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */ | |
1046 | 64, /* bitsize */ | |
b34976b6 | 1047 | FALSE, /* pc_relative */ |
5bd4f169 | 1048 | 0, /* bitpos */ |
b80eed39 | 1049 | complain_overflow_dont, /* complain_on_overflow */ |
805fc799 | 1050 | ppc64_elf_toc64_reloc, /* special_function */ |
5bd4f169 | 1051 | "R_PPC64_TOC", /* name */ |
b34976b6 | 1052 | FALSE, /* partial_inplace */ |
5bd4f169 | 1053 | 0, /* src_mask */ |
f5e87a1d | 1054 | ONES (64), /* dst_mask */ |
b34976b6 | 1055 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
1056 | |
1057 | /* Like R_PPC64_GOT16, but also informs the link editor that the | |
1058 | value to relocate may (!) refer to a PLT entry which the link | |
1059 | editor (a) may replace with the symbol value. If the link editor | |
1060 | is unable to fully resolve the symbol, it may (b) create a PLT | |
1061 | entry and store the address to the new PLT entry in the GOT. | |
1062 | This permits lazy resolution of function symbols at run time. | |
1063 | The link editor may also skip all of this and just (c) emit a | |
1064 | R_PPC64_GLOB_DAT to tie the symbol to the GOT entry. */ | |
1065 | /* FIXME: R_PPC64_PLTGOT16 not implemented. */ | |
1066 | HOWTO (R_PPC64_PLTGOT16, /* type */ | |
1067 | 0, /* rightshift */ | |
1068 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1069 | 16, /* bitsize */ | |
b34976b6 | 1070 | FALSE, /* pc_relative */ |
5bd4f169 AM |
1071 | 0, /* bitpos */ |
1072 | complain_overflow_signed, /* complain_on_overflow */ | |
805fc799 | 1073 | ppc64_elf_unhandled_reloc, /* special_function */ |
411e1bfb AM |
1074 | "R_PPC64_PLTGOT16", /* name */ |
1075 | FALSE, /* partial_inplace */ | |
1076 | 0, /* src_mask */ | |
1077 | 0xffff, /* dst_mask */ | |
1078 | FALSE), /* pcrel_offset */ | |
1079 | ||
1080 | /* Like R_PPC64_PLTGOT16, but without overflow. */ | |
1081 | /* FIXME: R_PPC64_PLTGOT16_LO not implemented. */ | |
1082 | HOWTO (R_PPC64_PLTGOT16_LO, /* type */ | |
1083 | 0, /* rightshift */ | |
1084 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1085 | 16, /* bitsize */ | |
1086 | FALSE, /* pc_relative */ | |
1087 | 0, /* bitpos */ | |
1088 | complain_overflow_dont, /* complain_on_overflow */ | |
1089 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1090 | "R_PPC64_PLTGOT16_LO", /* name */ | |
1091 | FALSE, /* partial_inplace */ | |
1092 | 0, /* src_mask */ | |
1093 | 0xffff, /* dst_mask */ | |
1094 | FALSE), /* pcrel_offset */ | |
1095 | ||
1096 | /* Like R_PPC64_PLT_GOT16, but using bits 16-31 of the address. */ | |
1097 | /* FIXME: R_PPC64_PLTGOT16_HI not implemented. */ | |
1098 | HOWTO (R_PPC64_PLTGOT16_HI, /* type */ | |
1099 | 16, /* rightshift */ | |
1100 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1101 | 16, /* bitsize */ | |
1102 | FALSE, /* pc_relative */ | |
1103 | 0, /* bitpos */ | |
f9c6b907 | 1104 | complain_overflow_signed, /* complain_on_overflow */ |
411e1bfb AM |
1105 | ppc64_elf_unhandled_reloc, /* special_function */ |
1106 | "R_PPC64_PLTGOT16_HI", /* name */ | |
1107 | FALSE, /* partial_inplace */ | |
1108 | 0, /* src_mask */ | |
1109 | 0xffff, /* dst_mask */ | |
1110 | FALSE), /* pcrel_offset */ | |
1111 | ||
1112 | /* Like R_PPC64_PLT_GOT16, but using bits 16-31 of the address, plus | |
1113 | 1 if the contents of the low 16 bits, treated as a signed number, | |
1114 | is negative. */ | |
1115 | /* FIXME: R_PPC64_PLTGOT16_HA not implemented. */ | |
1116 | HOWTO (R_PPC64_PLTGOT16_HA, /* type */ | |
1117 | 16, /* rightshift */ | |
1118 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1119 | 16, /* bitsize */ | |
1120 | FALSE, /* pc_relative */ | |
1121 | 0, /* bitpos */ | |
f9c6b907 | 1122 | complain_overflow_signed, /* complain_on_overflow */ |
411e1bfb AM |
1123 | ppc64_elf_unhandled_reloc, /* special_function */ |
1124 | "R_PPC64_PLTGOT16_HA", /* name */ | |
1125 | FALSE, /* partial_inplace */ | |
1126 | 0, /* src_mask */ | |
1127 | 0xffff, /* dst_mask */ | |
1128 | FALSE), /* pcrel_offset */ | |
1129 | ||
1130 | /* Like R_PPC64_ADDR16, but for instructions with a DS field. */ | |
1131 | HOWTO (R_PPC64_ADDR16_DS, /* type */ | |
1132 | 0, /* rightshift */ | |
1133 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1134 | 16, /* bitsize */ | |
1135 | FALSE, /* pc_relative */ | |
1136 | 0, /* bitpos */ | |
b80eed39 | 1137 | complain_overflow_signed, /* complain_on_overflow */ |
411e1bfb AM |
1138 | bfd_elf_generic_reloc, /* special_function */ |
1139 | "R_PPC64_ADDR16_DS", /* name */ | |
1140 | FALSE, /* partial_inplace */ | |
1141 | 0, /* src_mask */ | |
1142 | 0xfffc, /* dst_mask */ | |
1143 | FALSE), /* pcrel_offset */ | |
1144 | ||
1145 | /* Like R_PPC64_ADDR16_LO, but for instructions with a DS field. */ | |
1146 | HOWTO (R_PPC64_ADDR16_LO_DS, /* type */ | |
1147 | 0, /* rightshift */ | |
1148 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1149 | 16, /* bitsize */ | |
1150 | FALSE, /* pc_relative */ | |
1151 | 0, /* bitpos */ | |
1152 | complain_overflow_dont,/* complain_on_overflow */ | |
1153 | bfd_elf_generic_reloc, /* special_function */ | |
1154 | "R_PPC64_ADDR16_LO_DS",/* name */ | |
1155 | FALSE, /* partial_inplace */ | |
1156 | 0, /* src_mask */ | |
1157 | 0xfffc, /* dst_mask */ | |
1158 | FALSE), /* pcrel_offset */ | |
1159 | ||
1160 | /* Like R_PPC64_GOT16, but for instructions with a DS field. */ | |
1161 | HOWTO (R_PPC64_GOT16_DS, /* type */ | |
1162 | 0, /* rightshift */ | |
1163 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1164 | 16, /* bitsize */ | |
1165 | FALSE, /* pc_relative */ | |
1166 | 0, /* bitpos */ | |
1167 | complain_overflow_signed, /* complain_on_overflow */ | |
1168 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1169 | "R_PPC64_GOT16_DS", /* name */ | |
1170 | FALSE, /* partial_inplace */ | |
1171 | 0, /* src_mask */ | |
1172 | 0xfffc, /* dst_mask */ | |
1173 | FALSE), /* pcrel_offset */ | |
1174 | ||
1175 | /* Like R_PPC64_GOT16_LO, but for instructions with a DS field. */ | |
1176 | HOWTO (R_PPC64_GOT16_LO_DS, /* type */ | |
1177 | 0, /* rightshift */ | |
1178 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1179 | 16, /* bitsize */ | |
1180 | FALSE, /* pc_relative */ | |
1181 | 0, /* bitpos */ | |
1182 | complain_overflow_dont, /* complain_on_overflow */ | |
1183 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1184 | "R_PPC64_GOT16_LO_DS", /* name */ | |
1185 | FALSE, /* partial_inplace */ | |
1186 | 0, /* src_mask */ | |
1187 | 0xfffc, /* dst_mask */ | |
1188 | FALSE), /* pcrel_offset */ | |
1189 | ||
1190 | /* Like R_PPC64_PLT16_LO, but for instructions with a DS field. */ | |
1191 | HOWTO (R_PPC64_PLT16_LO_DS, /* type */ | |
1192 | 0, /* rightshift */ | |
1193 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1194 | 16, /* bitsize */ | |
1195 | FALSE, /* pc_relative */ | |
1196 | 0, /* bitpos */ | |
1197 | complain_overflow_dont, /* complain_on_overflow */ | |
1198 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1199 | "R_PPC64_PLT16_LO_DS", /* name */ | |
1200 | FALSE, /* partial_inplace */ | |
1201 | 0, /* src_mask */ | |
1202 | 0xfffc, /* dst_mask */ | |
1203 | FALSE), /* pcrel_offset */ | |
1204 | ||
1205 | /* Like R_PPC64_SECTOFF, but for instructions with a DS field. */ | |
1206 | HOWTO (R_PPC64_SECTOFF_DS, /* type */ | |
1207 | 0, /* rightshift */ | |
1208 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1209 | 16, /* bitsize */ | |
1210 | FALSE, /* pc_relative */ | |
1211 | 0, /* bitpos */ | |
b80eed39 | 1212 | complain_overflow_signed, /* complain_on_overflow */ |
411e1bfb AM |
1213 | ppc64_elf_sectoff_reloc, /* special_function */ |
1214 | "R_PPC64_SECTOFF_DS", /* name */ | |
1215 | FALSE, /* partial_inplace */ | |
1216 | 0, /* src_mask */ | |
1217 | 0xfffc, /* dst_mask */ | |
1218 | FALSE), /* pcrel_offset */ | |
1219 | ||
1220 | /* Like R_PPC64_SECTOFF_LO, but for instructions with a DS field. */ | |
1221 | HOWTO (R_PPC64_SECTOFF_LO_DS, /* type */ | |
1222 | 0, /* rightshift */ | |
1223 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1224 | 16, /* bitsize */ | |
1225 | FALSE, /* pc_relative */ | |
1226 | 0, /* bitpos */ | |
1227 | complain_overflow_dont, /* complain_on_overflow */ | |
1228 | ppc64_elf_sectoff_reloc, /* special_function */ | |
1229 | "R_PPC64_SECTOFF_LO_DS",/* name */ | |
1230 | FALSE, /* partial_inplace */ | |
1231 | 0, /* src_mask */ | |
1232 | 0xfffc, /* dst_mask */ | |
1233 | FALSE), /* pcrel_offset */ | |
1234 | ||
1235 | /* Like R_PPC64_TOC16, but for instructions with a DS field. */ | |
1236 | HOWTO (R_PPC64_TOC16_DS, /* type */ | |
1237 | 0, /* rightshift */ | |
1238 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1239 | 16, /* bitsize */ | |
1240 | FALSE, /* pc_relative */ | |
1241 | 0, /* bitpos */ | |
1242 | complain_overflow_signed, /* complain_on_overflow */ | |
1243 | ppc64_elf_toc_reloc, /* special_function */ | |
1244 | "R_PPC64_TOC16_DS", /* name */ | |
1245 | FALSE, /* partial_inplace */ | |
1246 | 0, /* src_mask */ | |
1247 | 0xfffc, /* dst_mask */ | |
1248 | FALSE), /* pcrel_offset */ | |
1249 | ||
1250 | /* Like R_PPC64_TOC16_LO, but for instructions with a DS field. */ | |
1251 | HOWTO (R_PPC64_TOC16_LO_DS, /* type */ | |
1252 | 0, /* rightshift */ | |
1253 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1254 | 16, /* bitsize */ | |
1255 | FALSE, /* pc_relative */ | |
1256 | 0, /* bitpos */ | |
1257 | complain_overflow_dont, /* complain_on_overflow */ | |
1258 | ppc64_elf_toc_reloc, /* special_function */ | |
1259 | "R_PPC64_TOC16_LO_DS", /* name */ | |
1260 | FALSE, /* partial_inplace */ | |
1261 | 0, /* src_mask */ | |
1262 | 0xfffc, /* dst_mask */ | |
1263 | FALSE), /* pcrel_offset */ | |
1264 | ||
1265 | /* Like R_PPC64_PLTGOT16, but for instructions with a DS field. */ | |
1266 | /* FIXME: R_PPC64_PLTGOT16_DS not implemented. */ | |
6bfdb61b | 1267 | HOWTO (R_PPC64_PLTGOT16_DS, /* type */ |
411e1bfb AM |
1268 | 0, /* rightshift */ |
1269 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1270 | 16, /* bitsize */ | |
1271 | FALSE, /* pc_relative */ | |
1272 | 0, /* bitpos */ | |
1273 | complain_overflow_signed, /* complain_on_overflow */ | |
1274 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1275 | "R_PPC64_PLTGOT16_DS", /* name */ | |
1276 | FALSE, /* partial_inplace */ | |
1277 | 0, /* src_mask */ | |
1278 | 0xfffc, /* dst_mask */ | |
1279 | FALSE), /* pcrel_offset */ | |
1280 | ||
1281 | /* Like R_PPC64_PLTGOT16_LO, but for instructions with a DS field. */ | |
1282 | /* FIXME: R_PPC64_PLTGOT16_LO not implemented. */ | |
1283 | HOWTO (R_PPC64_PLTGOT16_LO_DS,/* type */ | |
1284 | 0, /* rightshift */ | |
1285 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1286 | 16, /* bitsize */ | |
1287 | FALSE, /* pc_relative */ | |
1288 | 0, /* bitpos */ | |
1289 | complain_overflow_dont, /* complain_on_overflow */ | |
1290 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1291 | "R_PPC64_PLTGOT16_LO_DS",/* name */ | |
1292 | FALSE, /* partial_inplace */ | |
1293 | 0, /* src_mask */ | |
1294 | 0xfffc, /* dst_mask */ | |
1295 | FALSE), /* pcrel_offset */ | |
1296 | ||
727fc41e | 1297 | /* Marker relocs for TLS. */ |
411e1bfb AM |
1298 | HOWTO (R_PPC64_TLS, |
1299 | 0, /* rightshift */ | |
1300 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1301 | 32, /* bitsize */ | |
1302 | FALSE, /* pc_relative */ | |
1303 | 0, /* bitpos */ | |
1304 | complain_overflow_dont, /* complain_on_overflow */ | |
1305 | bfd_elf_generic_reloc, /* special_function */ | |
1306 | "R_PPC64_TLS", /* name */ | |
1307 | FALSE, /* partial_inplace */ | |
1308 | 0, /* src_mask */ | |
1309 | 0, /* dst_mask */ | |
1310 | FALSE), /* pcrel_offset */ | |
1311 | ||
727fc41e AM |
1312 | HOWTO (R_PPC64_TLSGD, |
1313 | 0, /* rightshift */ | |
1314 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1315 | 32, /* bitsize */ | |
1316 | FALSE, /* pc_relative */ | |
1317 | 0, /* bitpos */ | |
1318 | complain_overflow_dont, /* complain_on_overflow */ | |
1319 | bfd_elf_generic_reloc, /* special_function */ | |
1320 | "R_PPC64_TLSGD", /* name */ | |
1321 | FALSE, /* partial_inplace */ | |
1322 | 0, /* src_mask */ | |
1323 | 0, /* dst_mask */ | |
1324 | FALSE), /* pcrel_offset */ | |
1325 | ||
1326 | HOWTO (R_PPC64_TLSLD, | |
1327 | 0, /* rightshift */ | |
1328 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1329 | 32, /* bitsize */ | |
1330 | FALSE, /* pc_relative */ | |
1331 | 0, /* bitpos */ | |
1332 | complain_overflow_dont, /* complain_on_overflow */ | |
1333 | bfd_elf_generic_reloc, /* special_function */ | |
1334 | "R_PPC64_TLSLD", /* name */ | |
1335 | FALSE, /* partial_inplace */ | |
1336 | 0, /* src_mask */ | |
1337 | 0, /* dst_mask */ | |
1338 | FALSE), /* pcrel_offset */ | |
1339 | ||
23cedd1d AM |
1340 | /* Marker reloc for optimizing r2 save in prologue rather than on |
1341 | each plt call stub. */ | |
3b421ab3 AM |
1342 | HOWTO (R_PPC64_TOCSAVE, |
1343 | 0, /* rightshift */ | |
1344 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1345 | 32, /* bitsize */ | |
1346 | FALSE, /* pc_relative */ | |
1347 | 0, /* bitpos */ | |
1348 | complain_overflow_dont, /* complain_on_overflow */ | |
1349 | bfd_elf_generic_reloc, /* special_function */ | |
1350 | "R_PPC64_TOCSAVE", /* name */ | |
1351 | FALSE, /* partial_inplace */ | |
1352 | 0, /* src_mask */ | |
1353 | 0, /* dst_mask */ | |
1354 | FALSE), /* pcrel_offset */ | |
1355 | ||
23cedd1d AM |
1356 | /* Marker relocs on inline plt call instructions. */ |
1357 | HOWTO (R_PPC64_PLTSEQ, | |
1358 | 0, /* rightshift */ | |
1359 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1360 | 32, /* bitsize */ | |
1361 | FALSE, /* pc_relative */ | |
1362 | 0, /* bitpos */ | |
1363 | complain_overflow_dont, /* complain_on_overflow */ | |
1364 | bfd_elf_generic_reloc, /* special_function */ | |
1365 | "R_PPC64_PLTSEQ", /* name */ | |
1366 | FALSE, /* partial_inplace */ | |
1367 | 0, /* src_mask */ | |
1368 | 0, /* dst_mask */ | |
1369 | FALSE), /* pcrel_offset */ | |
1370 | ||
1371 | HOWTO (R_PPC64_PLTCALL, | |
1372 | 0, /* rightshift */ | |
1373 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1374 | 32, /* bitsize */ | |
1375 | FALSE, /* pc_relative */ | |
1376 | 0, /* bitpos */ | |
1377 | complain_overflow_dont, /* complain_on_overflow */ | |
1378 | bfd_elf_generic_reloc, /* special_function */ | |
1379 | "R_PPC64_PLTCALL", /* name */ | |
1380 | FALSE, /* partial_inplace */ | |
1381 | 0, /* src_mask */ | |
1382 | 0, /* dst_mask */ | |
1383 | FALSE), /* pcrel_offset */ | |
1384 | ||
411e1bfb AM |
1385 | /* Computes the load module index of the load module that contains the |
1386 | definition of its TLS sym. */ | |
1387 | HOWTO (R_PPC64_DTPMOD64, | |
1388 | 0, /* rightshift */ | |
1389 | 4, /* size (0 = byte, 1 = short, 2 = long) */ | |
1390 | 64, /* bitsize */ | |
1391 | FALSE, /* pc_relative */ | |
1392 | 0, /* bitpos */ | |
1393 | complain_overflow_dont, /* complain_on_overflow */ | |
1394 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1395 | "R_PPC64_DTPMOD64", /* name */ | |
1396 | FALSE, /* partial_inplace */ | |
1397 | 0, /* src_mask */ | |
1398 | ONES (64), /* dst_mask */ | |
1399 | FALSE), /* pcrel_offset */ | |
1400 | ||
1401 | /* Computes a dtv-relative displacement, the difference between the value | |
1402 | of sym+add and the base address of the thread-local storage block that | |
1403 | contains the definition of sym, minus 0x8000. */ | |
1404 | HOWTO (R_PPC64_DTPREL64, | |
1405 | 0, /* rightshift */ | |
1406 | 4, /* size (0 = byte, 1 = short, 2 = long) */ | |
1407 | 64, /* bitsize */ | |
1408 | FALSE, /* pc_relative */ | |
1409 | 0, /* bitpos */ | |
1410 | complain_overflow_dont, /* complain_on_overflow */ | |
1411 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1412 | "R_PPC64_DTPREL64", /* name */ | |
1413 | FALSE, /* partial_inplace */ | |
1414 | 0, /* src_mask */ | |
1415 | ONES (64), /* dst_mask */ | |
1416 | FALSE), /* pcrel_offset */ | |
1417 | ||
1418 | /* A 16 bit dtprel reloc. */ | |
1419 | HOWTO (R_PPC64_DTPREL16, | |
1420 | 0, /* rightshift */ | |
1421 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1422 | 16, /* bitsize */ | |
1423 | FALSE, /* pc_relative */ | |
1424 | 0, /* bitpos */ | |
1425 | complain_overflow_signed, /* complain_on_overflow */ | |
1426 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1427 | "R_PPC64_DTPREL16", /* name */ | |
1428 | FALSE, /* partial_inplace */ | |
1429 | 0, /* src_mask */ | |
1430 | 0xffff, /* dst_mask */ | |
1431 | FALSE), /* pcrel_offset */ | |
1432 | ||
1433 | /* Like DTPREL16, but no overflow. */ | |
1434 | HOWTO (R_PPC64_DTPREL16_LO, | |
1435 | 0, /* rightshift */ | |
1436 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1437 | 16, /* bitsize */ | |
1438 | FALSE, /* pc_relative */ | |
1439 | 0, /* bitpos */ | |
1440 | complain_overflow_dont, /* complain_on_overflow */ | |
1441 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1442 | "R_PPC64_DTPREL16_LO", /* name */ | |
1443 | FALSE, /* partial_inplace */ | |
1444 | 0, /* src_mask */ | |
1445 | 0xffff, /* dst_mask */ | |
1446 | FALSE), /* pcrel_offset */ | |
1447 | ||
1448 | /* Like DTPREL16_LO, but next higher group of 16 bits. */ | |
1449 | HOWTO (R_PPC64_DTPREL16_HI, | |
1450 | 16, /* rightshift */ | |
1451 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1452 | 16, /* bitsize */ | |
1453 | FALSE, /* pc_relative */ | |
1454 | 0, /* bitpos */ | |
f9c6b907 | 1455 | complain_overflow_signed, /* complain_on_overflow */ |
411e1bfb AM |
1456 | ppc64_elf_unhandled_reloc, /* special_function */ |
1457 | "R_PPC64_DTPREL16_HI", /* name */ | |
1458 | FALSE, /* partial_inplace */ | |
1459 | 0, /* src_mask */ | |
1460 | 0xffff, /* dst_mask */ | |
1461 | FALSE), /* pcrel_offset */ | |
1462 | ||
1463 | /* Like DTPREL16_HI, but adjust for low 16 bits. */ | |
1464 | HOWTO (R_PPC64_DTPREL16_HA, | |
1465 | 16, /* rightshift */ | |
1466 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1467 | 16, /* bitsize */ | |
1468 | FALSE, /* pc_relative */ | |
1469 | 0, /* bitpos */ | |
f9c6b907 | 1470 | complain_overflow_signed, /* complain_on_overflow */ |
411e1bfb AM |
1471 | ppc64_elf_unhandled_reloc, /* special_function */ |
1472 | "R_PPC64_DTPREL16_HA", /* name */ | |
1473 | FALSE, /* partial_inplace */ | |
1474 | 0, /* src_mask */ | |
1475 | 0xffff, /* dst_mask */ | |
1476 | FALSE), /* pcrel_offset */ | |
1477 | ||
1478 | /* Like DTPREL16_HI, but next higher group of 16 bits. */ | |
1479 | HOWTO (R_PPC64_DTPREL16_HIGHER, | |
1480 | 32, /* rightshift */ | |
1481 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1482 | 16, /* bitsize */ | |
1483 | FALSE, /* pc_relative */ | |
1484 | 0, /* bitpos */ | |
1485 | complain_overflow_dont, /* complain_on_overflow */ | |
1486 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1487 | "R_PPC64_DTPREL16_HIGHER", /* name */ | |
1488 | FALSE, /* partial_inplace */ | |
1489 | 0, /* src_mask */ | |
1490 | 0xffff, /* dst_mask */ | |
1491 | FALSE), /* pcrel_offset */ | |
1492 | ||
1493 | /* Like DTPREL16_HIGHER, but adjust for low 16 bits. */ | |
1494 | HOWTO (R_PPC64_DTPREL16_HIGHERA, | |
1495 | 32, /* rightshift */ | |
1496 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1497 | 16, /* bitsize */ | |
1498 | FALSE, /* pc_relative */ | |
1499 | 0, /* bitpos */ | |
1500 | complain_overflow_dont, /* complain_on_overflow */ | |
1501 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1502 | "R_PPC64_DTPREL16_HIGHERA", /* name */ | |
1503 | FALSE, /* partial_inplace */ | |
1504 | 0, /* src_mask */ | |
1505 | 0xffff, /* dst_mask */ | |
1506 | FALSE), /* pcrel_offset */ | |
1507 | ||
1508 | /* Like DTPREL16_HIGHER, but next higher group of 16 bits. */ | |
1509 | HOWTO (R_PPC64_DTPREL16_HIGHEST, | |
1510 | 48, /* rightshift */ | |
1511 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1512 | 16, /* bitsize */ | |
1513 | FALSE, /* pc_relative */ | |
1514 | 0, /* bitpos */ | |
1515 | complain_overflow_dont, /* complain_on_overflow */ | |
1516 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1517 | "R_PPC64_DTPREL16_HIGHEST", /* name */ | |
1518 | FALSE, /* partial_inplace */ | |
1519 | 0, /* src_mask */ | |
1520 | 0xffff, /* dst_mask */ | |
1521 | FALSE), /* pcrel_offset */ | |
1522 | ||
1523 | /* Like DTPREL16_HIGHEST, but adjust for low 16 bits. */ | |
1524 | HOWTO (R_PPC64_DTPREL16_HIGHESTA, | |
1525 | 48, /* rightshift */ | |
1526 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1527 | 16, /* bitsize */ | |
1528 | FALSE, /* pc_relative */ | |
1529 | 0, /* bitpos */ | |
1530 | complain_overflow_dont, /* complain_on_overflow */ | |
1531 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1532 | "R_PPC64_DTPREL16_HIGHESTA", /* name */ | |
1533 | FALSE, /* partial_inplace */ | |
1534 | 0, /* src_mask */ | |
1535 | 0xffff, /* dst_mask */ | |
1536 | FALSE), /* pcrel_offset */ | |
1537 | ||
1538 | /* Like DTPREL16, but for insns with a DS field. */ | |
1539 | HOWTO (R_PPC64_DTPREL16_DS, | |
1540 | 0, /* rightshift */ | |
1541 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1542 | 16, /* bitsize */ | |
1543 | FALSE, /* pc_relative */ | |
1544 | 0, /* bitpos */ | |
1545 | complain_overflow_signed, /* complain_on_overflow */ | |
1546 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1547 | "R_PPC64_DTPREL16_DS", /* name */ | |
1548 | FALSE, /* partial_inplace */ | |
1549 | 0, /* src_mask */ | |
1550 | 0xfffc, /* dst_mask */ | |
1551 | FALSE), /* pcrel_offset */ | |
1552 | ||
1553 | /* Like DTPREL16_DS, but no overflow. */ | |
1554 | HOWTO (R_PPC64_DTPREL16_LO_DS, | |
1555 | 0, /* rightshift */ | |
1556 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1557 | 16, /* bitsize */ | |
1558 | FALSE, /* pc_relative */ | |
1559 | 0, /* bitpos */ | |
1560 | complain_overflow_dont, /* complain_on_overflow */ | |
1561 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1562 | "R_PPC64_DTPREL16_LO_DS", /* name */ | |
1563 | FALSE, /* partial_inplace */ | |
1564 | 0, /* src_mask */ | |
1565 | 0xfffc, /* dst_mask */ | |
1566 | FALSE), /* pcrel_offset */ | |
1567 | ||
1568 | /* Computes a tp-relative displacement, the difference between the value of | |
1569 | sym+add and the value of the thread pointer (r13). */ | |
1570 | HOWTO (R_PPC64_TPREL64, | |
1571 | 0, /* rightshift */ | |
1572 | 4, /* size (0 = byte, 1 = short, 2 = long) */ | |
1573 | 64, /* bitsize */ | |
1574 | FALSE, /* pc_relative */ | |
1575 | 0, /* bitpos */ | |
1576 | complain_overflow_dont, /* complain_on_overflow */ | |
1577 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1578 | "R_PPC64_TPREL64", /* name */ | |
1579 | FALSE, /* partial_inplace */ | |
1580 | 0, /* src_mask */ | |
1581 | ONES (64), /* dst_mask */ | |
1582 | FALSE), /* pcrel_offset */ | |
1583 | ||
1584 | /* A 16 bit tprel reloc. */ | |
1585 | HOWTO (R_PPC64_TPREL16, | |
1586 | 0, /* rightshift */ | |
1587 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1588 | 16, /* bitsize */ | |
1589 | FALSE, /* pc_relative */ | |
1590 | 0, /* bitpos */ | |
1591 | complain_overflow_signed, /* complain_on_overflow */ | |
1592 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1593 | "R_PPC64_TPREL16", /* name */ | |
1594 | FALSE, /* partial_inplace */ | |
1595 | 0, /* src_mask */ | |
1596 | 0xffff, /* dst_mask */ | |
1597 | FALSE), /* pcrel_offset */ | |
1598 | ||
1599 | /* Like TPREL16, but no overflow. */ | |
1600 | HOWTO (R_PPC64_TPREL16_LO, | |
1601 | 0, /* rightshift */ | |
1602 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1603 | 16, /* bitsize */ | |
1604 | FALSE, /* pc_relative */ | |
1605 | 0, /* bitpos */ | |
1606 | complain_overflow_dont, /* complain_on_overflow */ | |
1607 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1608 | "R_PPC64_TPREL16_LO", /* name */ | |
1609 | FALSE, /* partial_inplace */ | |
1610 | 0, /* src_mask */ | |
1611 | 0xffff, /* dst_mask */ | |
1612 | FALSE), /* pcrel_offset */ | |
1613 | ||
1614 | /* Like TPREL16_LO, but next higher group of 16 bits. */ | |
1615 | HOWTO (R_PPC64_TPREL16_HI, | |
1616 | 16, /* rightshift */ | |
1617 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1618 | 16, /* bitsize */ | |
1619 | FALSE, /* pc_relative */ | |
1620 | 0, /* bitpos */ | |
f9c6b907 | 1621 | complain_overflow_signed, /* complain_on_overflow */ |
411e1bfb AM |
1622 | ppc64_elf_unhandled_reloc, /* special_function */ |
1623 | "R_PPC64_TPREL16_HI", /* name */ | |
1624 | FALSE, /* partial_inplace */ | |
1625 | 0, /* src_mask */ | |
1626 | 0xffff, /* dst_mask */ | |
1627 | FALSE), /* pcrel_offset */ | |
1628 | ||
1629 | /* Like TPREL16_HI, but adjust for low 16 bits. */ | |
1630 | HOWTO (R_PPC64_TPREL16_HA, | |
1631 | 16, /* rightshift */ | |
1632 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1633 | 16, /* bitsize */ | |
1634 | FALSE, /* pc_relative */ | |
1635 | 0, /* bitpos */ | |
f9c6b907 | 1636 | complain_overflow_signed, /* complain_on_overflow */ |
411e1bfb AM |
1637 | ppc64_elf_unhandled_reloc, /* special_function */ |
1638 | "R_PPC64_TPREL16_HA", /* name */ | |
1639 | FALSE, /* partial_inplace */ | |
1640 | 0, /* src_mask */ | |
1641 | 0xffff, /* dst_mask */ | |
1642 | FALSE), /* pcrel_offset */ | |
1643 | ||
1644 | /* Like TPREL16_HI, but next higher group of 16 bits. */ | |
1645 | HOWTO (R_PPC64_TPREL16_HIGHER, | |
1646 | 32, /* rightshift */ | |
1647 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1648 | 16, /* bitsize */ | |
1649 | FALSE, /* pc_relative */ | |
1650 | 0, /* bitpos */ | |
1651 | complain_overflow_dont, /* complain_on_overflow */ | |
1652 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1653 | "R_PPC64_TPREL16_HIGHER", /* name */ | |
1654 | FALSE, /* partial_inplace */ | |
1655 | 0, /* src_mask */ | |
1656 | 0xffff, /* dst_mask */ | |
1657 | FALSE), /* pcrel_offset */ | |
1658 | ||
1659 | /* Like TPREL16_HIGHER, but adjust for low 16 bits. */ | |
1660 | HOWTO (R_PPC64_TPREL16_HIGHERA, | |
1661 | 32, /* rightshift */ | |
1662 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1663 | 16, /* bitsize */ | |
1664 | FALSE, /* pc_relative */ | |
1665 | 0, /* bitpos */ | |
1666 | complain_overflow_dont, /* complain_on_overflow */ | |
1667 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1668 | "R_PPC64_TPREL16_HIGHERA", /* name */ | |
1669 | FALSE, /* partial_inplace */ | |
1670 | 0, /* src_mask */ | |
1671 | 0xffff, /* dst_mask */ | |
1672 | FALSE), /* pcrel_offset */ | |
1673 | ||
1674 | /* Like TPREL16_HIGHER, but next higher group of 16 bits. */ | |
1675 | HOWTO (R_PPC64_TPREL16_HIGHEST, | |
1676 | 48, /* rightshift */ | |
1677 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1678 | 16, /* bitsize */ | |
1679 | FALSE, /* pc_relative */ | |
1680 | 0, /* bitpos */ | |
1681 | complain_overflow_dont, /* complain_on_overflow */ | |
1682 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1683 | "R_PPC64_TPREL16_HIGHEST", /* name */ | |
1684 | FALSE, /* partial_inplace */ | |
1685 | 0, /* src_mask */ | |
1686 | 0xffff, /* dst_mask */ | |
1687 | FALSE), /* pcrel_offset */ | |
1688 | ||
1689 | /* Like TPREL16_HIGHEST, but adjust for low 16 bits. */ | |
1690 | HOWTO (R_PPC64_TPREL16_HIGHESTA, | |
1691 | 48, /* rightshift */ | |
1692 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1693 | 16, /* bitsize */ | |
1694 | FALSE, /* pc_relative */ | |
1695 | 0, /* bitpos */ | |
1696 | complain_overflow_dont, /* complain_on_overflow */ | |
1697 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1698 | "R_PPC64_TPREL16_HIGHESTA", /* name */ | |
1699 | FALSE, /* partial_inplace */ | |
1700 | 0, /* src_mask */ | |
1701 | 0xffff, /* dst_mask */ | |
1702 | FALSE), /* pcrel_offset */ | |
1703 | ||
1704 | /* Like TPREL16, but for insns with a DS field. */ | |
1705 | HOWTO (R_PPC64_TPREL16_DS, | |
1706 | 0, /* rightshift */ | |
1707 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1708 | 16, /* bitsize */ | |
1709 | FALSE, /* pc_relative */ | |
1710 | 0, /* bitpos */ | |
1711 | complain_overflow_signed, /* complain_on_overflow */ | |
1712 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1713 | "R_PPC64_TPREL16_DS", /* name */ | |
1714 | FALSE, /* partial_inplace */ | |
1715 | 0, /* src_mask */ | |
1716 | 0xfffc, /* dst_mask */ | |
1717 | FALSE), /* pcrel_offset */ | |
1718 | ||
1719 | /* Like TPREL16_DS, but no overflow. */ | |
1720 | HOWTO (R_PPC64_TPREL16_LO_DS, | |
1721 | 0, /* rightshift */ | |
1722 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1723 | 16, /* bitsize */ | |
1724 | FALSE, /* pc_relative */ | |
1725 | 0, /* bitpos */ | |
1726 | complain_overflow_dont, /* complain_on_overflow */ | |
1727 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1728 | "R_PPC64_TPREL16_LO_DS", /* name */ | |
1729 | FALSE, /* partial_inplace */ | |
1730 | 0, /* src_mask */ | |
1731 | 0xfffc, /* dst_mask */ | |
1732 | FALSE), /* pcrel_offset */ | |
1733 | ||
1734 | /* Allocates two contiguous entries in the GOT to hold a tls_index structure, | |
1735 | with values (sym+add)@dtpmod and (sym+add)@dtprel, and computes the offset | |
1736 | to the first entry relative to the TOC base (r2). */ | |
1737 | HOWTO (R_PPC64_GOT_TLSGD16, | |
1738 | 0, /* rightshift */ | |
1739 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1740 | 16, /* bitsize */ | |
1741 | FALSE, /* pc_relative */ | |
1742 | 0, /* bitpos */ | |
1743 | complain_overflow_signed, /* complain_on_overflow */ | |
1744 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1745 | "R_PPC64_GOT_TLSGD16", /* name */ | |
b34976b6 | 1746 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
1747 | 0, /* src_mask */ |
1748 | 0xffff, /* dst_mask */ | |
b34976b6 | 1749 | FALSE), /* pcrel_offset */ |
5bd4f169 | 1750 | |
411e1bfb AM |
1751 | /* Like GOT_TLSGD16, but no overflow. */ |
1752 | HOWTO (R_PPC64_GOT_TLSGD16_LO, | |
5bd4f169 AM |
1753 | 0, /* rightshift */ |
1754 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1755 | 16, /* bitsize */ | |
b34976b6 | 1756 | FALSE, /* pc_relative */ |
5bd4f169 AM |
1757 | 0, /* bitpos */ |
1758 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 1759 | ppc64_elf_unhandled_reloc, /* special_function */ |
411e1bfb | 1760 | "R_PPC64_GOT_TLSGD16_LO", /* name */ |
b34976b6 | 1761 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
1762 | 0, /* src_mask */ |
1763 | 0xffff, /* dst_mask */ | |
b34976b6 | 1764 | FALSE), /* pcrel_offset */ |
5bd4f169 | 1765 | |
411e1bfb AM |
1766 | /* Like GOT_TLSGD16_LO, but next higher group of 16 bits. */ |
1767 | HOWTO (R_PPC64_GOT_TLSGD16_HI, | |
5bd4f169 AM |
1768 | 16, /* rightshift */ |
1769 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1770 | 16, /* bitsize */ | |
b34976b6 | 1771 | FALSE, /* pc_relative */ |
5bd4f169 | 1772 | 0, /* bitpos */ |
f9c6b907 | 1773 | complain_overflow_signed, /* complain_on_overflow */ |
805fc799 | 1774 | ppc64_elf_unhandled_reloc, /* special_function */ |
411e1bfb | 1775 | "R_PPC64_GOT_TLSGD16_HI", /* name */ |
b34976b6 | 1776 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
1777 | 0, /* src_mask */ |
1778 | 0xffff, /* dst_mask */ | |
b34976b6 | 1779 | FALSE), /* pcrel_offset */ |
5bd4f169 | 1780 | |
411e1bfb AM |
1781 | /* Like GOT_TLSGD16_HI, but adjust for low 16 bits. */ |
1782 | HOWTO (R_PPC64_GOT_TLSGD16_HA, | |
5bd4f169 AM |
1783 | 16, /* rightshift */ |
1784 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1785 | 16, /* bitsize */ | |
b34976b6 | 1786 | FALSE, /* pc_relative */ |
5bd4f169 | 1787 | 0, /* bitpos */ |
f9c6b907 | 1788 | complain_overflow_signed, /* complain_on_overflow */ |
805fc799 | 1789 | ppc64_elf_unhandled_reloc, /* special_function */ |
411e1bfb | 1790 | "R_PPC64_GOT_TLSGD16_HA", /* name */ |
b34976b6 | 1791 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
1792 | 0, /* src_mask */ |
1793 | 0xffff, /* dst_mask */ | |
b34976b6 | 1794 | FALSE), /* pcrel_offset */ |
5bd4f169 | 1795 | |
411e1bfb AM |
1796 | /* Allocates two contiguous entries in the GOT to hold a tls_index structure, |
1797 | with values (sym+add)@dtpmod and zero, and computes the offset to the | |
1798 | first entry relative to the TOC base (r2). */ | |
1799 | HOWTO (R_PPC64_GOT_TLSLD16, | |
5bd4f169 AM |
1800 | 0, /* rightshift */ |
1801 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1802 | 16, /* bitsize */ | |
b34976b6 | 1803 | FALSE, /* pc_relative */ |
5bd4f169 | 1804 | 0, /* bitpos */ |
411e1bfb AM |
1805 | complain_overflow_signed, /* complain_on_overflow */ |
1806 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1807 | "R_PPC64_GOT_TLSLD16", /* name */ | |
b34976b6 | 1808 | FALSE, /* partial_inplace */ |
d006db6c | 1809 | 0, /* src_mask */ |
411e1bfb | 1810 | 0xffff, /* dst_mask */ |
b34976b6 | 1811 | FALSE), /* pcrel_offset */ |
5bd4f169 | 1812 | |
411e1bfb AM |
1813 | /* Like GOT_TLSLD16, but no overflow. */ |
1814 | HOWTO (R_PPC64_GOT_TLSLD16_LO, | |
5bd4f169 AM |
1815 | 0, /* rightshift */ |
1816 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1817 | 16, /* bitsize */ | |
b34976b6 | 1818 | FALSE, /* pc_relative */ |
5bd4f169 | 1819 | 0, /* bitpos */ |
411e1bfb AM |
1820 | complain_overflow_dont, /* complain_on_overflow */ |
1821 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1822 | "R_PPC64_GOT_TLSLD16_LO", /* name */ | |
b34976b6 | 1823 | FALSE, /* partial_inplace */ |
d006db6c | 1824 | 0, /* src_mask */ |
411e1bfb | 1825 | 0xffff, /* dst_mask */ |
b34976b6 | 1826 | FALSE), /* pcrel_offset */ |
5bd4f169 | 1827 | |
411e1bfb AM |
1828 | /* Like GOT_TLSLD16_LO, but next higher group of 16 bits. */ |
1829 | HOWTO (R_PPC64_GOT_TLSLD16_HI, | |
1830 | 16, /* rightshift */ | |
5bd4f169 AM |
1831 | 1, /* size (0 = byte, 1 = short, 2 = long) */ |
1832 | 16, /* bitsize */ | |
b34976b6 | 1833 | FALSE, /* pc_relative */ |
5bd4f169 | 1834 | 0, /* bitpos */ |
f9c6b907 | 1835 | complain_overflow_signed, /* complain_on_overflow */ |
805fc799 | 1836 | ppc64_elf_unhandled_reloc, /* special_function */ |
411e1bfb | 1837 | "R_PPC64_GOT_TLSLD16_HI", /* name */ |
b34976b6 | 1838 | FALSE, /* partial_inplace */ |
d006db6c | 1839 | 0, /* src_mask */ |
411e1bfb | 1840 | 0xffff, /* dst_mask */ |
b34976b6 | 1841 | FALSE), /* pcrel_offset */ |
5bd4f169 | 1842 | |
411e1bfb AM |
1843 | /* Like GOT_TLSLD16_HI, but adjust for low 16 bits. */ |
1844 | HOWTO (R_PPC64_GOT_TLSLD16_HA, | |
1845 | 16, /* rightshift */ | |
5bd4f169 AM |
1846 | 1, /* size (0 = byte, 1 = short, 2 = long) */ |
1847 | 16, /* bitsize */ | |
b34976b6 | 1848 | FALSE, /* pc_relative */ |
5bd4f169 | 1849 | 0, /* bitpos */ |
f9c6b907 | 1850 | complain_overflow_signed, /* complain_on_overflow */ |
805fc799 | 1851 | ppc64_elf_unhandled_reloc, /* special_function */ |
411e1bfb | 1852 | "R_PPC64_GOT_TLSLD16_HA", /* name */ |
b34976b6 | 1853 | FALSE, /* partial_inplace */ |
d006db6c | 1854 | 0, /* src_mask */ |
411e1bfb | 1855 | 0xffff, /* dst_mask */ |
b34976b6 | 1856 | FALSE), /* pcrel_offset */ |
5bd4f169 | 1857 | |
411e1bfb AM |
1858 | /* Allocates an entry in the GOT with value (sym+add)@dtprel, and computes |
1859 | the offset to the entry relative to the TOC base (r2). */ | |
1860 | HOWTO (R_PPC64_GOT_DTPREL16_DS, | |
5bd4f169 AM |
1861 | 0, /* rightshift */ |
1862 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1863 | 16, /* bitsize */ | |
b34976b6 | 1864 | FALSE, /* pc_relative */ |
5bd4f169 | 1865 | 0, /* bitpos */ |
411e1bfb | 1866 | complain_overflow_signed, /* complain_on_overflow */ |
805fc799 | 1867 | ppc64_elf_unhandled_reloc, /* special_function */ |
411e1bfb | 1868 | "R_PPC64_GOT_DTPREL16_DS", /* name */ |
b34976b6 | 1869 | FALSE, /* partial_inplace */ |
d006db6c | 1870 | 0, /* src_mask */ |
5bd4f169 | 1871 | 0xfffc, /* dst_mask */ |
b34976b6 | 1872 | FALSE), /* pcrel_offset */ |
5bd4f169 | 1873 | |
411e1bfb AM |
1874 | /* Like GOT_DTPREL16_DS, but no overflow. */ |
1875 | HOWTO (R_PPC64_GOT_DTPREL16_LO_DS, | |
5bd4f169 | 1876 | 0, /* rightshift */ |
c061c2d8 AM |
1877 | 1, /* size (0 = byte, 1 = short, 2 = long) */ |
1878 | 16, /* bitsize */ | |
b34976b6 | 1879 | FALSE, /* pc_relative */ |
5bd4f169 | 1880 | 0, /* bitpos */ |
411e1bfb AM |
1881 | complain_overflow_dont, /* complain_on_overflow */ |
1882 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1883 | "R_PPC64_GOT_DTPREL16_LO_DS", /* name */ | |
b34976b6 | 1884 | FALSE, /* partial_inplace */ |
d006db6c | 1885 | 0, /* src_mask */ |
c061c2d8 | 1886 | 0xfffc, /* dst_mask */ |
b34976b6 | 1887 | FALSE), /* pcrel_offset */ |
5bd4f169 | 1888 | |
411e1bfb AM |
1889 | /* Like GOT_DTPREL16_LO_DS, but next higher group of 16 bits. */ |
1890 | HOWTO (R_PPC64_GOT_DTPREL16_HI, | |
1891 | 16, /* rightshift */ | |
5bd4f169 AM |
1892 | 1, /* size (0 = byte, 1 = short, 2 = long) */ |
1893 | 16, /* bitsize */ | |
b34976b6 | 1894 | FALSE, /* pc_relative */ |
5bd4f169 | 1895 | 0, /* bitpos */ |
f9c6b907 | 1896 | complain_overflow_signed, /* complain_on_overflow */ |
411e1bfb AM |
1897 | ppc64_elf_unhandled_reloc, /* special_function */ |
1898 | "R_PPC64_GOT_DTPREL16_HI", /* name */ | |
b34976b6 | 1899 | FALSE, /* partial_inplace */ |
d006db6c | 1900 | 0, /* src_mask */ |
411e1bfb | 1901 | 0xffff, /* dst_mask */ |
b34976b6 | 1902 | FALSE), /* pcrel_offset */ |
5bd4f169 | 1903 | |
411e1bfb AM |
1904 | /* Like GOT_DTPREL16_HI, but adjust for low 16 bits. */ |
1905 | HOWTO (R_PPC64_GOT_DTPREL16_HA, | |
1906 | 16, /* rightshift */ | |
1907 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1908 | 16, /* bitsize */ | |
1909 | FALSE, /* pc_relative */ | |
1910 | 0, /* bitpos */ | |
f9c6b907 | 1911 | complain_overflow_signed, /* complain_on_overflow */ |
411e1bfb AM |
1912 | ppc64_elf_unhandled_reloc, /* special_function */ |
1913 | "R_PPC64_GOT_DTPREL16_HA", /* name */ | |
1914 | FALSE, /* partial_inplace */ | |
1915 | 0, /* src_mask */ | |
1916 | 0xffff, /* dst_mask */ | |
1917 | FALSE), /* pcrel_offset */ | |
1918 | ||
1919 | /* Allocates an entry in the GOT with value (sym+add)@tprel, and computes the | |
1920 | offset to the entry relative to the TOC base (r2). */ | |
1921 | HOWTO (R_PPC64_GOT_TPREL16_DS, | |
5bd4f169 AM |
1922 | 0, /* rightshift */ |
1923 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1924 | 16, /* bitsize */ | |
b34976b6 | 1925 | FALSE, /* pc_relative */ |
5bd4f169 AM |
1926 | 0, /* bitpos */ |
1927 | complain_overflow_signed, /* complain_on_overflow */ | |
411e1bfb AM |
1928 | ppc64_elf_unhandled_reloc, /* special_function */ |
1929 | "R_PPC64_GOT_TPREL16_DS", /* name */ | |
b34976b6 | 1930 | FALSE, /* partial_inplace */ |
d006db6c | 1931 | 0, /* src_mask */ |
ad8e1ba5 | 1932 | 0xfffc, /* dst_mask */ |
b34976b6 | 1933 | FALSE), /* pcrel_offset */ |
5bd4f169 | 1934 | |
411e1bfb AM |
1935 | /* Like GOT_TPREL16_DS, but no overflow. */ |
1936 | HOWTO (R_PPC64_GOT_TPREL16_LO_DS, | |
5bd4f169 AM |
1937 | 0, /* rightshift */ |
1938 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1939 | 16, /* bitsize */ | |
b34976b6 | 1940 | FALSE, /* pc_relative */ |
5bd4f169 AM |
1941 | 0, /* bitpos */ |
1942 | complain_overflow_dont, /* complain_on_overflow */ | |
411e1bfb AM |
1943 | ppc64_elf_unhandled_reloc, /* special_function */ |
1944 | "R_PPC64_GOT_TPREL16_LO_DS", /* name */ | |
b34976b6 | 1945 | FALSE, /* partial_inplace */ |
d006db6c | 1946 | 0, /* src_mask */ |
ad8e1ba5 | 1947 | 0xfffc, /* dst_mask */ |
b34976b6 | 1948 | FALSE), /* pcrel_offset */ |
5bd4f169 | 1949 | |
411e1bfb AM |
1950 | /* Like GOT_TPREL16_LO_DS, but next higher group of 16 bits. */ |
1951 | HOWTO (R_PPC64_GOT_TPREL16_HI, | |
1952 | 16, /* rightshift */ | |
5bd4f169 AM |
1953 | 1, /* size (0 = byte, 1 = short, 2 = long) */ |
1954 | 16, /* bitsize */ | |
b34976b6 | 1955 | FALSE, /* pc_relative */ |
5bd4f169 | 1956 | 0, /* bitpos */ |
f9c6b907 | 1957 | complain_overflow_signed, /* complain_on_overflow */ |
805fc799 | 1958 | ppc64_elf_unhandled_reloc, /* special_function */ |
411e1bfb | 1959 | "R_PPC64_GOT_TPREL16_HI", /* name */ |
b34976b6 | 1960 | FALSE, /* partial_inplace */ |
d006db6c | 1961 | 0, /* src_mask */ |
411e1bfb | 1962 | 0xffff, /* dst_mask */ |
b34976b6 | 1963 | FALSE), /* pcrel_offset */ |
5bd4f169 | 1964 | |
411e1bfb AM |
1965 | /* Like GOT_TPREL16_HI, but adjust for low 16 bits. */ |
1966 | HOWTO (R_PPC64_GOT_TPREL16_HA, | |
1967 | 16, /* rightshift */ | |
5bd4f169 AM |
1968 | 1, /* size (0 = byte, 1 = short, 2 = long) */ |
1969 | 16, /* bitsize */ | |
b34976b6 | 1970 | FALSE, /* pc_relative */ |
5bd4f169 | 1971 | 0, /* bitpos */ |
f9c6b907 | 1972 | complain_overflow_signed, /* complain_on_overflow */ |
805fc799 | 1973 | ppc64_elf_unhandled_reloc, /* special_function */ |
411e1bfb | 1974 | "R_PPC64_GOT_TPREL16_HA", /* name */ |
b34976b6 | 1975 | FALSE, /* partial_inplace */ |
d006db6c | 1976 | 0, /* src_mask */ |
411e1bfb | 1977 | 0xffff, /* dst_mask */ |
b34976b6 | 1978 | FALSE), /* pcrel_offset */ |
5bd4f169 | 1979 | |
25f23106 AM |
1980 | HOWTO (R_PPC64_JMP_IREL, /* type */ |
1981 | 0, /* rightshift */ | |
1982 | 0, /* size (0=byte, 1=short, 2=long, 4=64 bits) */ | |
1983 | 0, /* bitsize */ | |
1984 | FALSE, /* pc_relative */ | |
1985 | 0, /* bitpos */ | |
1986 | complain_overflow_dont, /* complain_on_overflow */ | |
1987 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1988 | "R_PPC64_JMP_IREL", /* name */ | |
1989 | FALSE, /* partial_inplace */ | |
1990 | 0, /* src_mask */ | |
1991 | 0, /* dst_mask */ | |
1992 | FALSE), /* pcrel_offset */ | |
1993 | ||
e054468f AM |
1994 | HOWTO (R_PPC64_IRELATIVE, /* type */ |
1995 | 0, /* rightshift */ | |
1996 | 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */ | |
1997 | 64, /* bitsize */ | |
1998 | FALSE, /* pc_relative */ | |
1999 | 0, /* bitpos */ | |
2000 | complain_overflow_dont, /* complain_on_overflow */ | |
2001 | bfd_elf_generic_reloc, /* special_function */ | |
2002 | "R_PPC64_IRELATIVE", /* name */ | |
2003 | FALSE, /* partial_inplace */ | |
2004 | 0, /* src_mask */ | |
2005 | ONES (64), /* dst_mask */ | |
2006 | FALSE), /* pcrel_offset */ | |
2007 | ||
25f23106 AM |
2008 | /* A 16 bit relative relocation. */ |
2009 | HOWTO (R_PPC64_REL16, /* type */ | |
2010 | 0, /* rightshift */ | |
2011 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
2012 | 16, /* bitsize */ | |
2013 | TRUE, /* pc_relative */ | |
2014 | 0, /* bitpos */ | |
b80eed39 | 2015 | complain_overflow_signed, /* complain_on_overflow */ |
25f23106 AM |
2016 | bfd_elf_generic_reloc, /* special_function */ |
2017 | "R_PPC64_REL16", /* name */ | |
2018 | FALSE, /* partial_inplace */ | |
2019 | 0, /* src_mask */ | |
2020 | 0xffff, /* dst_mask */ | |
2021 | TRUE), /* pcrel_offset */ | |
2022 | ||
2023 | /* A 16 bit relative relocation without overflow. */ | |
2024 | HOWTO (R_PPC64_REL16_LO, /* type */ | |
2025 | 0, /* rightshift */ | |
2026 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
2027 | 16, /* bitsize */ | |
2028 | TRUE, /* pc_relative */ | |
2029 | 0, /* bitpos */ | |
2030 | complain_overflow_dont,/* complain_on_overflow */ | |
2031 | bfd_elf_generic_reloc, /* special_function */ | |
2032 | "R_PPC64_REL16_LO", /* name */ | |
2033 | FALSE, /* partial_inplace */ | |
2034 | 0, /* src_mask */ | |
2035 | 0xffff, /* dst_mask */ | |
2036 | TRUE), /* pcrel_offset */ | |
2037 | ||
2038 | /* The high order 16 bits of a relative address. */ | |
2039 | HOWTO (R_PPC64_REL16_HI, /* type */ | |
2040 | 16, /* rightshift */ | |
2041 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
2042 | 16, /* bitsize */ | |
2043 | TRUE, /* pc_relative */ | |
2044 | 0, /* bitpos */ | |
f9c6b907 | 2045 | complain_overflow_signed, /* complain_on_overflow */ |
25f23106 AM |
2046 | bfd_elf_generic_reloc, /* special_function */ |
2047 | "R_PPC64_REL16_HI", /* name */ | |
2048 | FALSE, /* partial_inplace */ | |
2049 | 0, /* src_mask */ | |
2050 | 0xffff, /* dst_mask */ | |
2051 | TRUE), /* pcrel_offset */ | |
2052 | ||
2053 | /* The high order 16 bits of a relative address, plus 1 if the contents of | |
2054 | the low 16 bits, treated as a signed number, is negative. */ | |
2055 | HOWTO (R_PPC64_REL16_HA, /* type */ | |
2056 | 16, /* rightshift */ | |
2057 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
2058 | 16, /* bitsize */ | |
2059 | TRUE, /* pc_relative */ | |
2060 | 0, /* bitpos */ | |
f9c6b907 | 2061 | complain_overflow_signed, /* complain_on_overflow */ |
25f23106 AM |
2062 | ppc64_elf_ha_reloc, /* special_function */ |
2063 | "R_PPC64_REL16_HA", /* name */ | |
2064 | FALSE, /* partial_inplace */ | |
2065 | 0, /* src_mask */ | |
2066 | 0xffff, /* dst_mask */ | |
2067 | TRUE), /* pcrel_offset */ | |
2068 | ||
a680de9a PB |
2069 | /* Like R_PPC64_REL16_HA but for split field in addpcis. */ |
2070 | HOWTO (R_PPC64_REL16DX_HA, /* type */ | |
2071 | 16, /* rightshift */ | |
2072 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
2073 | 16, /* bitsize */ | |
2074 | TRUE, /* pc_relative */ | |
2075 | 0, /* bitpos */ | |
2076 | complain_overflow_signed, /* complain_on_overflow */ | |
2077 | ppc64_elf_ha_reloc, /* special_function */ | |
2078 | "R_PPC64_REL16DX_HA", /* name */ | |
2079 | FALSE, /* partial_inplace */ | |
2080 | 0, /* src_mask */ | |
2081 | 0x1fffc1, /* dst_mask */ | |
2082 | TRUE), /* pcrel_offset */ | |
2083 | ||
7ba71655 AM |
2084 | /* A split-field reloc for addpcis, non-relative (gas internal use only). */ |
2085 | HOWTO (R_PPC64_16DX_HA, /* type */ | |
2086 | 16, /* rightshift */ | |
2087 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
2088 | 16, /* bitsize */ | |
2089 | FALSE, /* pc_relative */ | |
2090 | 0, /* bitpos */ | |
2091 | complain_overflow_signed, /* complain_on_overflow */ | |
2092 | ppc64_elf_ha_reloc, /* special_function */ | |
2093 | "R_PPC64_16DX_HA", /* name */ | |
2094 | FALSE, /* partial_inplace */ | |
2095 | 0, /* src_mask */ | |
2096 | 0x1fffc1, /* dst_mask */ | |
2097 | FALSE), /* pcrel_offset */ | |
2098 | ||
f9c6b907 AM |
2099 | /* Like R_PPC64_ADDR16_HI, but no overflow. */ |
2100 | HOWTO (R_PPC64_ADDR16_HIGH, /* type */ | |
2101 | 16, /* rightshift */ | |
2102 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
2103 | 16, /* bitsize */ | |
2104 | FALSE, /* pc_relative */ | |
2105 | 0, /* bitpos */ | |
2106 | complain_overflow_dont, /* complain_on_overflow */ | |
2107 | bfd_elf_generic_reloc, /* special_function */ | |
2108 | "R_PPC64_ADDR16_HIGH", /* name */ | |
2109 | FALSE, /* partial_inplace */ | |
2110 | 0, /* src_mask */ | |
2111 | 0xffff, /* dst_mask */ | |
2112 | FALSE), /* pcrel_offset */ | |
2113 | ||
2114 | /* Like R_PPC64_ADDR16_HA, but no overflow. */ | |
2115 | HOWTO (R_PPC64_ADDR16_HIGHA, /* type */ | |
2116 | 16, /* rightshift */ | |
2117 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
2118 | 16, /* bitsize */ | |
2119 | FALSE, /* pc_relative */ | |
2120 | 0, /* bitpos */ | |
2121 | complain_overflow_dont, /* complain_on_overflow */ | |
2122 | ppc64_elf_ha_reloc, /* special_function */ | |
2123 | "R_PPC64_ADDR16_HIGHA", /* name */ | |
2124 | FALSE, /* partial_inplace */ | |
2125 | 0, /* src_mask */ | |
2126 | 0xffff, /* dst_mask */ | |
2127 | FALSE), /* pcrel_offset */ | |
2128 | ||
2129 | /* Like R_PPC64_DTPREL16_HI, but no overflow. */ | |
2130 | HOWTO (R_PPC64_DTPREL16_HIGH, | |
2131 | 16, /* rightshift */ | |
2132 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
2133 | 16, /* bitsize */ | |
2134 | FALSE, /* pc_relative */ | |
2135 | 0, /* bitpos */ | |
2136 | complain_overflow_dont, /* complain_on_overflow */ | |
2137 | ppc64_elf_unhandled_reloc, /* special_function */ | |
2138 | "R_PPC64_DTPREL16_HIGH", /* name */ | |
2139 | FALSE, /* partial_inplace */ | |
2140 | 0, /* src_mask */ | |
2141 | 0xffff, /* dst_mask */ | |
2142 | FALSE), /* pcrel_offset */ | |
2143 | ||
2144 | /* Like R_PPC64_DTPREL16_HA, but no overflow. */ | |
2145 | HOWTO (R_PPC64_DTPREL16_HIGHA, | |
2146 | 16, /* rightshift */ | |
2147 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
2148 | 16, /* bitsize */ | |
2149 | FALSE, /* pc_relative */ | |
2150 | 0, /* bitpos */ | |
2151 | complain_overflow_dont, /* complain_on_overflow */ | |
2152 | ppc64_elf_unhandled_reloc, /* special_function */ | |
2153 | "R_PPC64_DTPREL16_HIGHA", /* name */ | |
2154 | FALSE, /* partial_inplace */ | |
2155 | 0, /* src_mask */ | |
2156 | 0xffff, /* dst_mask */ | |
2157 | FALSE), /* pcrel_offset */ | |
2158 | ||
2159 | /* Like R_PPC64_TPREL16_HI, but no overflow. */ | |
2160 | HOWTO (R_PPC64_TPREL16_HIGH, | |
2161 | 16, /* rightshift */ | |
2162 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
2163 | 16, /* bitsize */ | |
2164 | FALSE, /* pc_relative */ | |
2165 | 0, /* bitpos */ | |
2166 | complain_overflow_dont, /* complain_on_overflow */ | |
2167 | ppc64_elf_unhandled_reloc, /* special_function */ | |
2168 | "R_PPC64_TPREL16_HIGH", /* name */ | |
2169 | FALSE, /* partial_inplace */ | |
2170 | 0, /* src_mask */ | |
2171 | 0xffff, /* dst_mask */ | |
2172 | FALSE), /* pcrel_offset */ | |
2173 | ||
2174 | /* Like R_PPC64_TPREL16_HA, but no overflow. */ | |
2175 | HOWTO (R_PPC64_TPREL16_HIGHA, | |
2176 | 16, /* rightshift */ | |
2177 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
2178 | 16, /* bitsize */ | |
2179 | FALSE, /* pc_relative */ | |
2180 | 0, /* bitpos */ | |
2181 | complain_overflow_dont, /* complain_on_overflow */ | |
2182 | ppc64_elf_unhandled_reloc, /* special_function */ | |
2183 | "R_PPC64_TPREL16_HIGHA", /* name */ | |
2184 | FALSE, /* partial_inplace */ | |
2185 | 0, /* src_mask */ | |
2186 | 0xffff, /* dst_mask */ | |
2187 | FALSE), /* pcrel_offset */ | |
2188 | ||
006589cf AM |
2189 | /* Marker reloc on ELFv2 large-model function entry. */ |
2190 | HOWTO (R_PPC64_ENTRY, | |
2191 | 0, /* rightshift */ | |
2192 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
2193 | 32, /* bitsize */ | |
2194 | FALSE, /* pc_relative */ | |
2195 | 0, /* bitpos */ | |
2196 | complain_overflow_dont, /* complain_on_overflow */ | |
2197 | bfd_elf_generic_reloc, /* special_function */ | |
2198 | "R_PPC64_ENTRY", /* name */ | |
2199 | FALSE, /* partial_inplace */ | |
2200 | 0, /* src_mask */ | |
2201 | 0, /* dst_mask */ | |
2202 | FALSE), /* pcrel_offset */ | |
2203 | ||
45965137 AM |
2204 | /* Like ADDR64, but use local entry point of function. */ |
2205 | HOWTO (R_PPC64_ADDR64_LOCAL, /* type */ | |
2206 | 0, /* rightshift */ | |
2207 | 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */ | |
2208 | 64, /* bitsize */ | |
2209 | FALSE, /* pc_relative */ | |
2210 | 0, /* bitpos */ | |
2211 | complain_overflow_dont, /* complain_on_overflow */ | |
2212 | bfd_elf_generic_reloc, /* special_function */ | |
2213 | "R_PPC64_ADDR64_LOCAL", /* name */ | |
2214 | FALSE, /* partial_inplace */ | |
2215 | 0, /* src_mask */ | |
2216 | ONES (64), /* dst_mask */ | |
2217 | FALSE), /* pcrel_offset */ | |
2218 | ||
5bd4f169 AM |
2219 | /* GNU extension to record C++ vtable hierarchy. */ |
2220 | HOWTO (R_PPC64_GNU_VTINHERIT, /* type */ | |
2221 | 0, /* rightshift */ | |
2222 | 0, /* size (0 = byte, 1 = short, 2 = long) */ | |
2223 | 0, /* bitsize */ | |
b34976b6 | 2224 | FALSE, /* pc_relative */ |
5bd4f169 AM |
2225 | 0, /* bitpos */ |
2226 | complain_overflow_dont, /* complain_on_overflow */ | |
2227 | NULL, /* special_function */ | |
2228 | "R_PPC64_GNU_VTINHERIT", /* name */ | |
b34976b6 | 2229 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
2230 | 0, /* src_mask */ |
2231 | 0, /* dst_mask */ | |
b34976b6 | 2232 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
2233 | |
2234 | /* GNU extension to record C++ vtable member usage. */ | |
2235 | HOWTO (R_PPC64_GNU_VTENTRY, /* type */ | |
2236 | 0, /* rightshift */ | |
2237 | 0, /* size (0 = byte, 1 = short, 2 = long) */ | |
2238 | 0, /* bitsize */ | |
b34976b6 | 2239 | FALSE, /* pc_relative */ |
5bd4f169 AM |
2240 | 0, /* bitpos */ |
2241 | complain_overflow_dont, /* complain_on_overflow */ | |
2242 | NULL, /* special_function */ | |
2243 | "R_PPC64_GNU_VTENTRY", /* name */ | |
b34976b6 | 2244 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
2245 | 0, /* src_mask */ |
2246 | 0, /* dst_mask */ | |
b34976b6 | 2247 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
2248 | }; |
2249 | ||
2250 | \f | |
2251 | /* Initialize the ppc64_elf_howto_table, so that linear accesses can | |
2252 | be done. */ | |
2253 | ||
2254 | static void | |
4ce794b7 | 2255 | ppc_howto_init (void) |
5bd4f169 AM |
2256 | { |
2257 | unsigned int i, type; | |
2258 | ||
a4b6fadd | 2259 | for (i = 0; i < ARRAY_SIZE (ppc64_elf_howto_raw); i++) |
5bd4f169 AM |
2260 | { |
2261 | type = ppc64_elf_howto_raw[i].type; | |
a4b6fadd | 2262 | BFD_ASSERT (type < ARRAY_SIZE (ppc64_elf_howto_table)); |
5bd4f169 AM |
2263 | ppc64_elf_howto_table[type] = &ppc64_elf_howto_raw[i]; |
2264 | } | |
2265 | } | |
2266 | ||
2267 | static reloc_howto_type * | |
f3185997 | 2268 | ppc64_elf_reloc_type_lookup (bfd *abfd, |
4ce794b7 | 2269 | bfd_reloc_code_real_type code) |
5bd4f169 | 2270 | { |
411e1bfb | 2271 | enum elf_ppc64_reloc_type r = R_PPC64_NONE; |
5bd4f169 AM |
2272 | |
2273 | if (!ppc64_elf_howto_table[R_PPC64_ADDR32]) | |
2274 | /* Initialize howto table if needed. */ | |
2275 | ppc_howto_init (); | |
2276 | ||
4ce794b7 | 2277 | switch (code) |
5bd4f169 AM |
2278 | { |
2279 | default: | |
f3185997 | 2280 | /* xgettext:c-format */ |
e8f5af78 | 2281 | _bfd_error_handler (_("%pB: unsupported relocation type %#x"), abfd, (int) code); |
f3185997 | 2282 | bfd_set_error (bfd_error_bad_value); |
4ce794b7 | 2283 | return NULL; |
5bd4f169 | 2284 | |
411e1bfb AM |
2285 | case BFD_RELOC_NONE: r = R_PPC64_NONE; |
2286 | break; | |
2287 | case BFD_RELOC_32: r = R_PPC64_ADDR32; | |
2288 | break; | |
2289 | case BFD_RELOC_PPC_BA26: r = R_PPC64_ADDR24; | |
2290 | break; | |
2291 | case BFD_RELOC_16: r = R_PPC64_ADDR16; | |
2292 | break; | |
2293 | case BFD_RELOC_LO16: r = R_PPC64_ADDR16_LO; | |
2294 | break; | |
2295 | case BFD_RELOC_HI16: r = R_PPC64_ADDR16_HI; | |
2296 | break; | |
f9c6b907 AM |
2297 | case BFD_RELOC_PPC64_ADDR16_HIGH: r = R_PPC64_ADDR16_HIGH; |
2298 | break; | |
411e1bfb | 2299 | case BFD_RELOC_HI16_S: r = R_PPC64_ADDR16_HA; |
5bd4f169 | 2300 | break; |
f9c6b907 AM |
2301 | case BFD_RELOC_PPC64_ADDR16_HIGHA: r = R_PPC64_ADDR16_HIGHA; |
2302 | break; | |
411e1bfb | 2303 | case BFD_RELOC_PPC_BA16: r = R_PPC64_ADDR14; |
5bd4f169 | 2304 | break; |
411e1bfb | 2305 | case BFD_RELOC_PPC_BA16_BRTAKEN: r = R_PPC64_ADDR14_BRTAKEN; |
5bd4f169 | 2306 | break; |
411e1bfb | 2307 | case BFD_RELOC_PPC_BA16_BRNTAKEN: r = R_PPC64_ADDR14_BRNTAKEN; |
5bd4f169 | 2308 | break; |
411e1bfb | 2309 | case BFD_RELOC_PPC_B26: r = R_PPC64_REL24; |
5bd4f169 | 2310 | break; |
411e1bfb | 2311 | case BFD_RELOC_PPC_B16: r = R_PPC64_REL14; |
5bd4f169 | 2312 | break; |
411e1bfb | 2313 | case BFD_RELOC_PPC_B16_BRTAKEN: r = R_PPC64_REL14_BRTAKEN; |
5bd4f169 | 2314 | break; |
411e1bfb | 2315 | case BFD_RELOC_PPC_B16_BRNTAKEN: r = R_PPC64_REL14_BRNTAKEN; |
5bd4f169 | 2316 | break; |
411e1bfb | 2317 | case BFD_RELOC_16_GOTOFF: r = R_PPC64_GOT16; |
5bd4f169 | 2318 | break; |
411e1bfb | 2319 | case BFD_RELOC_LO16_GOTOFF: r = R_PPC64_GOT16_LO; |
5bd4f169 | 2320 | break; |
411e1bfb | 2321 | case BFD_RELOC_HI16_GOTOFF: r = R_PPC64_GOT16_HI; |
5bd4f169 | 2322 | break; |
411e1bfb | 2323 | case BFD_RELOC_HI16_S_GOTOFF: r = R_PPC64_GOT16_HA; |
5bd4f169 | 2324 | break; |
411e1bfb | 2325 | case BFD_RELOC_PPC_COPY: r = R_PPC64_COPY; |
5bd4f169 | 2326 | break; |
411e1bfb | 2327 | case BFD_RELOC_PPC_GLOB_DAT: r = R_PPC64_GLOB_DAT; |
5bd4f169 | 2328 | break; |
411e1bfb | 2329 | case BFD_RELOC_32_PCREL: r = R_PPC64_REL32; |
5bd4f169 | 2330 | break; |
411e1bfb | 2331 | case BFD_RELOC_32_PLTOFF: r = R_PPC64_PLT32; |
5bd4f169 | 2332 | break; |
411e1bfb | 2333 | case BFD_RELOC_32_PLT_PCREL: r = R_PPC64_PLTREL32; |
5bd4f169 | 2334 | break; |
411e1bfb | 2335 | case BFD_RELOC_LO16_PLTOFF: r = R_PPC64_PLT16_LO; |
5bd4f169 | 2336 | break; |
411e1bfb | 2337 | case BFD_RELOC_HI16_PLTOFF: r = R_PPC64_PLT16_HI; |
5bd4f169 | 2338 | break; |
411e1bfb | 2339 | case BFD_RELOC_HI16_S_PLTOFF: r = R_PPC64_PLT16_HA; |
5bd4f169 | 2340 | break; |
411e1bfb | 2341 | case BFD_RELOC_16_BASEREL: r = R_PPC64_SECTOFF; |
5bd4f169 | 2342 | break; |
411e1bfb | 2343 | case BFD_RELOC_LO16_BASEREL: r = R_PPC64_SECTOFF_LO; |
5bd4f169 | 2344 | break; |
411e1bfb | 2345 | case BFD_RELOC_HI16_BASEREL: r = R_PPC64_SECTOFF_HI; |
5bd4f169 | 2346 | break; |
411e1bfb | 2347 | case BFD_RELOC_HI16_S_BASEREL: r = R_PPC64_SECTOFF_HA; |
5bd4f169 | 2348 | break; |
411e1bfb | 2349 | case BFD_RELOC_CTOR: r = R_PPC64_ADDR64; |
5bd4f169 | 2350 | break; |
411e1bfb | 2351 | case BFD_RELOC_64: r = R_PPC64_ADDR64; |
5bd4f169 | 2352 | break; |
411e1bfb | 2353 | case BFD_RELOC_PPC64_HIGHER: r = R_PPC64_ADDR16_HIGHER; |
5bd4f169 | 2354 | break; |
411e1bfb | 2355 | case BFD_RELOC_PPC64_HIGHER_S: r = R_PPC64_ADDR16_HIGHERA; |
5bd4f169 | 2356 | break; |
411e1bfb | 2357 | case BFD_RELOC_PPC64_HIGHEST: r = R_PPC64_ADDR16_HIGHEST; |
5bd4f169 | 2358 | break; |
411e1bfb | 2359 | case BFD_RELOC_PPC64_HIGHEST_S: r = R_PPC64_ADDR16_HIGHESTA; |
5bd4f169 | 2360 | break; |
411e1bfb | 2361 | case BFD_RELOC_64_PCREL: r = R_PPC64_REL64; |
5bd4f169 | 2362 | break; |
411e1bfb | 2363 | case BFD_RELOC_64_PLTOFF: r = R_PPC64_PLT64; |
5bd4f169 | 2364 | break; |
411e1bfb | 2365 | case BFD_RELOC_64_PLT_PCREL: r = R_PPC64_PLTREL64; |
5bd4f169 | 2366 | break; |
411e1bfb | 2367 | case BFD_RELOC_PPC_TOC16: r = R_PPC64_TOC16; |
5bd4f169 | 2368 | break; |
411e1bfb | 2369 | case BFD_RELOC_PPC64_TOC16_LO: r = R_PPC64_TOC16_LO; |
5bd4f169 | 2370 | break; |
411e1bfb | 2371 | case BFD_RELOC_PPC64_TOC16_HI: r = R_PPC64_TOC16_HI; |
5bd4f169 | 2372 | break; |
411e1bfb | 2373 | case BFD_RELOC_PPC64_TOC16_HA: r = R_PPC64_TOC16_HA; |
5bd4f169 | 2374 | break; |
411e1bfb | 2375 | case BFD_RELOC_PPC64_TOC: r = R_PPC64_TOC; |
5bd4f169 | 2376 | break; |
411e1bfb | 2377 | case BFD_RELOC_PPC64_PLTGOT16: r = R_PPC64_PLTGOT16; |
5bd4f169 | 2378 | break; |
411e1bfb | 2379 | case BFD_RELOC_PPC64_PLTGOT16_LO: r = R_PPC64_PLTGOT16_LO; |
5bd4f169 | 2380 | break; |
411e1bfb | 2381 | case BFD_RELOC_PPC64_PLTGOT16_HI: r = R_PPC64_PLTGOT16_HI; |
5bd4f169 | 2382 | break; |
411e1bfb | 2383 | case BFD_RELOC_PPC64_PLTGOT16_HA: r = R_PPC64_PLTGOT16_HA; |
5bd4f169 | 2384 | break; |
411e1bfb | 2385 | case BFD_RELOC_PPC64_ADDR16_DS: r = R_PPC64_ADDR16_DS; |
5bd4f169 | 2386 | break; |
411e1bfb | 2387 | case BFD_RELOC_PPC64_ADDR16_LO_DS: r = R_PPC64_ADDR16_LO_DS; |
5bd4f169 | 2388 | break; |
411e1bfb | 2389 | case BFD_RELOC_PPC64_GOT16_DS: r = R_PPC64_GOT16_DS; |
5bd4f169 | 2390 | break; |
411e1bfb | 2391 | case BFD_RELOC_PPC64_GOT16_LO_DS: r = R_PPC64_GOT16_LO_DS; |
5bd4f169 | 2392 | break; |
411e1bfb | 2393 | case BFD_RELOC_PPC64_PLT16_LO_DS: r = R_PPC64_PLT16_LO_DS; |
5bd4f169 | 2394 | break; |
411e1bfb | 2395 | case BFD_RELOC_PPC64_SECTOFF_DS: r = R_PPC64_SECTOFF_DS; |
5bd4f169 | 2396 | break; |
411e1bfb | 2397 | case BFD_RELOC_PPC64_SECTOFF_LO_DS: r = R_PPC64_SECTOFF_LO_DS; |
5bd4f169 | 2398 | break; |
411e1bfb | 2399 | case BFD_RELOC_PPC64_TOC16_DS: r = R_PPC64_TOC16_DS; |
5bd4f169 | 2400 | break; |
411e1bfb | 2401 | case BFD_RELOC_PPC64_TOC16_LO_DS: r = R_PPC64_TOC16_LO_DS; |
5bd4f169 | 2402 | break; |
411e1bfb | 2403 | case BFD_RELOC_PPC64_PLTGOT16_DS: r = R_PPC64_PLTGOT16_DS; |
5bd4f169 | 2404 | break; |
411e1bfb | 2405 | case BFD_RELOC_PPC64_PLTGOT16_LO_DS: r = R_PPC64_PLTGOT16_LO_DS; |
5bd4f169 | 2406 | break; |
411e1bfb | 2407 | case BFD_RELOC_PPC_TLS: r = R_PPC64_TLS; |
5bd4f169 | 2408 | break; |
727fc41e AM |
2409 | case BFD_RELOC_PPC_TLSGD: r = R_PPC64_TLSGD; |
2410 | break; | |
2411 | case BFD_RELOC_PPC_TLSLD: r = R_PPC64_TLSLD; | |
2412 | break; | |
411e1bfb | 2413 | case BFD_RELOC_PPC_DTPMOD: r = R_PPC64_DTPMOD64; |
5bd4f169 | 2414 | break; |
411e1bfb | 2415 | case BFD_RELOC_PPC_TPREL16: r = R_PPC64_TPREL16; |
5bd4f169 | 2416 | break; |
411e1bfb | 2417 | case BFD_RELOC_PPC_TPREL16_LO: r = R_PPC64_TPREL16_LO; |
5bd4f169 | 2418 | break; |
411e1bfb | 2419 | case BFD_RELOC_PPC_TPREL16_HI: r = R_PPC64_TPREL16_HI; |
5bd4f169 | 2420 | break; |
f9c6b907 AM |
2421 | case BFD_RELOC_PPC64_TPREL16_HIGH: r = R_PPC64_TPREL16_HIGH; |
2422 | break; | |
411e1bfb | 2423 | case BFD_RELOC_PPC_TPREL16_HA: r = R_PPC64_TPREL16_HA; |
5bd4f169 | 2424 | break; |
f9c6b907 AM |
2425 | case BFD_RELOC_PPC64_TPREL16_HIGHA: r = R_PPC64_TPREL16_HIGHA; |
2426 | break; | |
411e1bfb | 2427 | case BFD_RELOC_PPC_TPREL: r = R_PPC64_TPREL64; |
5bd4f169 | 2428 | break; |
411e1bfb AM |
2429 | case BFD_RELOC_PPC_DTPREL16: r = R_PPC64_DTPREL16; |
2430 | break; | |
2431 | case BFD_RELOC_PPC_DTPREL16_LO: r = R_PPC64_DTPREL16_LO; | |
2432 | break; | |
2433 | case BFD_RELOC_PPC_DTPREL16_HI: r = R_PPC64_DTPREL16_HI; | |
2434 | break; | |
f9c6b907 AM |
2435 | case BFD_RELOC_PPC64_DTPREL16_HIGH: r = R_PPC64_DTPREL16_HIGH; |
2436 | break; | |
411e1bfb AM |
2437 | case BFD_RELOC_PPC_DTPREL16_HA: r = R_PPC64_DTPREL16_HA; |
2438 | break; | |
f9c6b907 AM |
2439 | case BFD_RELOC_PPC64_DTPREL16_HIGHA: r = R_PPC64_DTPREL16_HIGHA; |
2440 | break; | |
411e1bfb AM |
2441 | case BFD_RELOC_PPC_DTPREL: r = R_PPC64_DTPREL64; |
2442 | break; | |
2443 | case BFD_RELOC_PPC_GOT_TLSGD16: r = R_PPC64_GOT_TLSGD16; | |
2444 | break; | |
2445 | case BFD_RELOC_PPC_GOT_TLSGD16_LO: r = R_PPC64_GOT_TLSGD16_LO; | |
2446 | break; | |
2447 | case BFD_RELOC_PPC_GOT_TLSGD16_HI: r = R_PPC64_GOT_TLSGD16_HI; | |
2448 | break; | |
2449 | case BFD_RELOC_PPC_GOT_TLSGD16_HA: r = R_PPC64_GOT_TLSGD16_HA; | |
2450 | break; | |
2451 | case BFD_RELOC_PPC_GOT_TLSLD16: r = R_PPC64_GOT_TLSLD16; | |
2452 | break; | |
2453 | case BFD_RELOC_PPC_GOT_TLSLD16_LO: r = R_PPC64_GOT_TLSLD16_LO; | |
2454 | break; | |
2455 | case BFD_RELOC_PPC_GOT_TLSLD16_HI: r = R_PPC64_GOT_TLSLD16_HI; | |
2456 | break; | |
2457 | case BFD_RELOC_PPC_GOT_TLSLD16_HA: r = R_PPC64_GOT_TLSLD16_HA; | |
2458 | break; | |
2459 | case BFD_RELOC_PPC_GOT_TPREL16: r = R_PPC64_GOT_TPREL16_DS; | |
2460 | break; | |
2461 | case BFD_RELOC_PPC_GOT_TPREL16_LO: r = R_PPC64_GOT_TPREL16_LO_DS; | |
2462 | break; | |
2463 | case BFD_RELOC_PPC_GOT_TPREL16_HI: r = R_PPC64_GOT_TPREL16_HI; | |
2464 | break; | |
2465 | case BFD_RELOC_PPC_GOT_TPREL16_HA: r = R_PPC64_GOT_TPREL16_HA; | |
2466 | break; | |
2467 | case BFD_RELOC_PPC_GOT_DTPREL16: r = R_PPC64_GOT_DTPREL16_DS; | |
2468 | break; | |
2469 | case BFD_RELOC_PPC_GOT_DTPREL16_LO: r = R_PPC64_GOT_DTPREL16_LO_DS; | |
2470 | break; | |
2471 | case BFD_RELOC_PPC_GOT_DTPREL16_HI: r = R_PPC64_GOT_DTPREL16_HI; | |
2472 | break; | |
2473 | case BFD_RELOC_PPC_GOT_DTPREL16_HA: r = R_PPC64_GOT_DTPREL16_HA; | |
2474 | break; | |
2475 | case BFD_RELOC_PPC64_TPREL16_DS: r = R_PPC64_TPREL16_DS; | |
2476 | break; | |
2477 | case BFD_RELOC_PPC64_TPREL16_LO_DS: r = R_PPC64_TPREL16_LO_DS; | |
2478 | break; | |
2479 | case BFD_RELOC_PPC64_TPREL16_HIGHER: r = R_PPC64_TPREL16_HIGHER; | |
2480 | break; | |
2481 | case BFD_RELOC_PPC64_TPREL16_HIGHERA: r = R_PPC64_TPREL16_HIGHERA; | |
2482 | break; | |
2483 | case BFD_RELOC_PPC64_TPREL16_HIGHEST: r = R_PPC64_TPREL16_HIGHEST; | |
2484 | break; | |
2485 | case BFD_RELOC_PPC64_TPREL16_HIGHESTA: r = R_PPC64_TPREL16_HIGHESTA; | |
2486 | break; | |
2487 | case BFD_RELOC_PPC64_DTPREL16_DS: r = R_PPC64_DTPREL16_DS; | |
2488 | break; | |
2489 | case BFD_RELOC_PPC64_DTPREL16_LO_DS: r = R_PPC64_DTPREL16_LO_DS; | |
2490 | break; | |
2491 | case BFD_RELOC_PPC64_DTPREL16_HIGHER: r = R_PPC64_DTPREL16_HIGHER; | |
2492 | break; | |
2493 | case BFD_RELOC_PPC64_DTPREL16_HIGHERA: r = R_PPC64_DTPREL16_HIGHERA; | |
2494 | break; | |
2495 | case BFD_RELOC_PPC64_DTPREL16_HIGHEST: r = R_PPC64_DTPREL16_HIGHEST; | |
2496 | break; | |
2497 | case BFD_RELOC_PPC64_DTPREL16_HIGHESTA: r = R_PPC64_DTPREL16_HIGHESTA; | |
2498 | break; | |
25f23106 AM |
2499 | case BFD_RELOC_16_PCREL: r = R_PPC64_REL16; |
2500 | break; | |
2501 | case BFD_RELOC_LO16_PCREL: r = R_PPC64_REL16_LO; | |
2502 | break; | |
2503 | case BFD_RELOC_HI16_PCREL: r = R_PPC64_REL16_HI; | |
2504 | break; | |
2505 | case BFD_RELOC_HI16_S_PCREL: r = R_PPC64_REL16_HA; | |
2506 | break; | |
7ba71655 AM |
2507 | case BFD_RELOC_PPC_16DX_HA: r = R_PPC64_16DX_HA; |
2508 | break; | |
a680de9a PB |
2509 | case BFD_RELOC_PPC_REL16DX_HA: r = R_PPC64_REL16DX_HA; |
2510 | break; | |
006589cf AM |
2511 | case BFD_RELOC_PPC64_ENTRY: r = R_PPC64_ENTRY; |
2512 | break; | |
45965137 AM |
2513 | case BFD_RELOC_PPC64_ADDR64_LOCAL: r = R_PPC64_ADDR64_LOCAL; |
2514 | break; | |
411e1bfb AM |
2515 | case BFD_RELOC_VTABLE_INHERIT: r = R_PPC64_GNU_VTINHERIT; |
2516 | break; | |
2517 | case BFD_RELOC_VTABLE_ENTRY: r = R_PPC64_GNU_VTENTRY; | |
5bd4f169 AM |
2518 | break; |
2519 | } | |
2520 | ||
4ce794b7 | 2521 | return ppc64_elf_howto_table[r]; |
5bd4f169 AM |
2522 | }; |
2523 | ||
157090f7 AM |
2524 | static reloc_howto_type * |
2525 | ppc64_elf_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED, | |
2526 | const char *r_name) | |
2527 | { | |
2528 | unsigned int i; | |
2529 | ||
a4b6fadd | 2530 | for (i = 0; i < ARRAY_SIZE (ppc64_elf_howto_raw); i++) |
157090f7 AM |
2531 | if (ppc64_elf_howto_raw[i].name != NULL |
2532 | && strcasecmp (ppc64_elf_howto_raw[i].name, r_name) == 0) | |
2533 | return &ppc64_elf_howto_raw[i]; | |
2534 | ||
f3185997 | 2535 | |
157090f7 AM |
2536 | return NULL; |
2537 | } | |
2538 | ||
5bd4f169 AM |
2539 | /* Set the howto pointer for a PowerPC ELF reloc. */ |
2540 | ||
f3185997 | 2541 | static bfd_boolean |
4aef7643 | 2542 | ppc64_elf_info_to_howto (bfd *abfd, arelent *cache_ptr, |
4ce794b7 | 2543 | Elf_Internal_Rela *dst) |
5bd4f169 | 2544 | { |
65f38f15 AM |
2545 | unsigned int type; |
2546 | ||
ef60b7ff | 2547 | /* Initialize howto table if needed. */ |
5bd4f169 | 2548 | if (!ppc64_elf_howto_table[R_PPC64_ADDR32]) |
5bd4f169 AM |
2549 | ppc_howto_init (); |
2550 | ||
65f38f15 | 2551 | type = ELF64_R_TYPE (dst->r_info); |
a4b6fadd | 2552 | if (type >= ARRAY_SIZE (ppc64_elf_howto_table)) |
d0fb9a8d | 2553 | { |
695344c0 | 2554 | /* xgettext:c-format */ |
0aa13fee | 2555 | _bfd_error_handler (_("%pB: unsupported relocation type %#x"), |
cf97bcb0 | 2556 | abfd, type); |
f3185997 NC |
2557 | bfd_set_error (bfd_error_bad_value); |
2558 | return FALSE; | |
d0fb9a8d | 2559 | } |
65f38f15 | 2560 | cache_ptr->howto = ppc64_elf_howto_table[type]; |
f3185997 NC |
2561 | if (cache_ptr->howto == NULL || cache_ptr->howto->name == NULL) |
2562 | { | |
2563 | /* xgettext:c-format */ | |
2564 | _bfd_error_handler (_("%pB: unsupported relocation type %#x"), | |
2565 | abfd, type); | |
2566 | bfd_set_error (bfd_error_bad_value); | |
2567 | return FALSE; | |
2568 | } | |
2569 | ||
2570 | return TRUE; | |
5bd4f169 AM |
2571 | } |
2572 | ||
04c9666a | 2573 | /* Handle the R_PPC64_ADDR16_HA and similar relocs. */ |
5bd4f169 AM |
2574 | |
2575 | static bfd_reloc_status_type | |
4ce794b7 AM |
2576 | ppc64_elf_ha_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, |
2577 | void *data, asection *input_section, | |
2578 | bfd *output_bfd, char **error_message) | |
5bd4f169 | 2579 | { |
a680de9a PB |
2580 | enum elf_ppc64_reloc_type r_type; |
2581 | long insn; | |
2582 | bfd_size_type octets; | |
3de43e7b | 2583 | bfd_vma value; |
a680de9a | 2584 | |
805fc799 AM |
2585 | /* If this is a relocatable link (output_bfd test tells us), just |
2586 | call the generic function. Any adjustment will be done at final | |
2587 | link time. */ | |
2588 | if (output_bfd != NULL) | |
cedb70c5 | 2589 | return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, |
805fc799 AM |
2590 | input_section, output_bfd, error_message); |
2591 | ||
2592 | /* Adjust the addend for sign extension of the low 16 bits. | |
2593 | We won't actually be using the low 16 bits, so trashing them | |
2594 | doesn't matter. */ | |
2595 | reloc_entry->addend += 0x8000; | |
a680de9a PB |
2596 | r_type = reloc_entry->howto->type; |
2597 | if (r_type != R_PPC64_REL16DX_HA) | |
2598 | return bfd_reloc_continue; | |
2599 | ||
2600 | value = 0; | |
2601 | if (!bfd_is_com_section (symbol->section)) | |
2602 | value = symbol->value; | |
2603 | value += (reloc_entry->addend | |
2604 | + symbol->section->output_offset | |
2605 | + symbol->section->output_section->vma); | |
2606 | value -= (reloc_entry->address | |
2607 | + input_section->output_offset | |
2608 | + input_section->output_section->vma); | |
3de43e7b | 2609 | value = (bfd_signed_vma) value >> 16; |
a680de9a PB |
2610 | |
2611 | octets = reloc_entry->address * bfd_octets_per_byte (abfd); | |
2612 | insn = bfd_get_32 (abfd, (bfd_byte *) data + octets); | |
2613 | insn &= ~0x1fffc1; | |
3de43e7b | 2614 | insn |= (value & 0xffc1) | ((value & 0x3e) << 15); |
a680de9a | 2615 | bfd_put_32 (abfd, insn, (bfd_byte *) data + octets); |
3de43e7b | 2616 | if (value + 0x8000 > 0xffff) |
a680de9a PB |
2617 | return bfd_reloc_overflow; |
2618 | return bfd_reloc_ok; | |
805fc799 | 2619 | } |
5bd4f169 | 2620 | |
2441e016 AM |
2621 | static bfd_reloc_status_type |
2622 | ppc64_elf_branch_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, | |
2623 | void *data, asection *input_section, | |
2624 | bfd *output_bfd, char **error_message) | |
2625 | { | |
2626 | if (output_bfd != NULL) | |
2627 | return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, | |
2628 | input_section, output_bfd, error_message); | |
2629 | ||
699733f6 AM |
2630 | if (strcmp (symbol->section->name, ".opd") == 0 |
2631 | && (symbol->section->owner->flags & DYNAMIC) == 0) | |
2441e016 AM |
2632 | { |
2633 | bfd_vma dest = opd_entry_value (symbol->section, | |
2634 | symbol->value + reloc_entry->addend, | |
aef36ac1 | 2635 | NULL, NULL, FALSE); |
2441e016 AM |
2636 | if (dest != (bfd_vma) -1) |
2637 | reloc_entry->addend = dest - (symbol->value | |
2638 | + symbol->section->output_section->vma | |
2639 | + symbol->section->output_offset); | |
2640 | } | |
810d4e75 AM |
2641 | else |
2642 | { | |
2643 | elf_symbol_type *elfsym = (elf_symbol_type *) symbol; | |
2644 | ||
2645 | if (symbol->section->owner != abfd | |
9f284bf9 | 2646 | && symbol->section->owner != NULL |
810d4e75 AM |
2647 | && abiversion (symbol->section->owner) >= 2) |
2648 | { | |
2649 | unsigned int i; | |
2650 | ||
2651 | for (i = 0; i < symbol->section->owner->symcount; ++i) | |
2652 | { | |
2653 | asymbol *symdef = symbol->section->owner->outsymbols[i]; | |
2654 | ||
2655 | if (strcmp (symdef->name, symbol->name) == 0) | |
2656 | { | |
2657 | elfsym = (elf_symbol_type *) symdef; | |
2658 | break; | |
2659 | } | |
2660 | } | |
2661 | } | |
2662 | reloc_entry->addend | |
2663 | += PPC64_LOCAL_ENTRY_OFFSET (elfsym->internal_elf_sym.st_other); | |
2664 | } | |
2441e016 AM |
2665 | return bfd_reloc_continue; |
2666 | } | |
2667 | ||
805fc799 | 2668 | static bfd_reloc_status_type |
4ce794b7 AM |
2669 | ppc64_elf_brtaken_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, |
2670 | void *data, asection *input_section, | |
2671 | bfd *output_bfd, char **error_message) | |
805fc799 AM |
2672 | { |
2673 | long insn; | |
04c9666a | 2674 | enum elf_ppc64_reloc_type r_type; |
805fc799 | 2675 | bfd_size_type octets; |
794e51c0 AM |
2676 | /* Assume 'at' branch hints. */ |
2677 | bfd_boolean is_isa_v2 = TRUE; | |
805fc799 AM |
2678 | |
2679 | /* If this is a relocatable link (output_bfd test tells us), just | |
2680 | call the generic function. Any adjustment will be done at final | |
2681 | link time. */ | |
5bd4f169 | 2682 | if (output_bfd != NULL) |
cedb70c5 | 2683 | return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, |
805fc799 AM |
2684 | input_section, output_bfd, error_message); |
2685 | ||
2686 | octets = reloc_entry->address * bfd_octets_per_byte (abfd); | |
2687 | insn = bfd_get_32 (abfd, (bfd_byte *) data + octets); | |
2688 | insn &= ~(0x01 << 21); | |
4ce794b7 | 2689 | r_type = reloc_entry->howto->type; |
805fc799 AM |
2690 | if (r_type == R_PPC64_ADDR14_BRTAKEN |
2691 | || r_type == R_PPC64_REL14_BRTAKEN) | |
cedb70c5 | 2692 | insn |= 0x01 << 21; /* 'y' or 't' bit, lowest bit of BO field. */ |
805fc799 | 2693 | |
794e51c0 | 2694 | if (is_isa_v2) |
5bd4f169 | 2695 | { |
805fc799 AM |
2696 | /* Set 'a' bit. This is 0b00010 in BO field for branch |
2697 | on CR(BI) insns (BO == 001at or 011at), and 0b01000 | |
2698 | for branch on CTR insns (BO == 1a00t or 1a01t). */ | |
2699 | if ((insn & (0x14 << 21)) == (0x04 << 21)) | |
2700 | insn |= 0x02 << 21; | |
2701 | else if ((insn & (0x14 << 21)) == (0x10 << 21)) | |
2702 | insn |= 0x08 << 21; | |
2703 | else | |
2441e016 | 2704 | goto out; |
5bd4f169 | 2705 | } |
805fc799 AM |
2706 | else |
2707 | { | |
2708 | bfd_vma target = 0; | |
2709 | bfd_vma from; | |
5bd4f169 | 2710 | |
805fc799 AM |
2711 | if (!bfd_is_com_section (symbol->section)) |
2712 | target = symbol->value; | |
2713 | target += symbol->section->output_section->vma; | |
2714 | target += symbol->section->output_offset; | |
2715 | target += reloc_entry->addend; | |
5bd4f169 | 2716 | |
805fc799 AM |
2717 | from = (reloc_entry->address |
2718 | + input_section->output_offset | |
2719 | + input_section->output_section->vma); | |
5bd4f169 | 2720 | |
805fc799 AM |
2721 | /* Invert 'y' bit if not the default. */ |
2722 | if ((bfd_signed_vma) (target - from) < 0) | |
2723 | insn ^= 0x01 << 21; | |
2724 | } | |
4ce794b7 | 2725 | bfd_put_32 (abfd, insn, (bfd_byte *) data + octets); |
2441e016 AM |
2726 | out: |
2727 | return ppc64_elf_branch_reloc (abfd, reloc_entry, symbol, data, | |
2728 | input_section, output_bfd, error_message); | |
805fc799 | 2729 | } |
5bd4f169 | 2730 | |
805fc799 | 2731 | static bfd_reloc_status_type |
4ce794b7 AM |
2732 | ppc64_elf_sectoff_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, |
2733 | void *data, asection *input_section, | |
2734 | bfd *output_bfd, char **error_message) | |
805fc799 AM |
2735 | { |
2736 | /* If this is a relocatable link (output_bfd test tells us), just | |
2737 | call the generic function. Any adjustment will be done at final | |
2738 | link time. */ | |
2739 | if (output_bfd != NULL) | |
cedb70c5 | 2740 | return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, |
805fc799 | 2741 | input_section, output_bfd, error_message); |
5bd4f169 | 2742 | |
805fc799 AM |
2743 | /* Subtract the symbol section base address. */ |
2744 | reloc_entry->addend -= symbol->section->output_section->vma; | |
5bd4f169 AM |
2745 | return bfd_reloc_continue; |
2746 | } | |
2747 | ||
805fc799 | 2748 | static bfd_reloc_status_type |
4ce794b7 AM |
2749 | ppc64_elf_sectoff_ha_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, |
2750 | void *data, asection *input_section, | |
2751 | bfd *output_bfd, char **error_message) | |
805fc799 AM |
2752 | { |
2753 | /* If this is a relocatable link (output_bfd test tells us), just | |
2754 | call the generic function. Any adjustment will be done at final | |
2755 | link time. */ | |
2756 | if (output_bfd != NULL) | |
cedb70c5 | 2757 | return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, |
805fc799 AM |
2758 | input_section, output_bfd, error_message); |
2759 | ||
2760 | /* Subtract the symbol section base address. */ | |
2761 | reloc_entry->addend -= symbol->section->output_section->vma; | |
2762 | ||
2763 | /* Adjust the addend for sign extension of the low 16 bits. */ | |
2764 | reloc_entry->addend += 0x8000; | |
2765 | return bfd_reloc_continue; | |
2766 | } | |
2767 | ||
2768 | static bfd_reloc_status_type | |
4ce794b7 AM |
2769 | ppc64_elf_toc_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, |
2770 | void *data, asection *input_section, | |
2771 | bfd *output_bfd, char **error_message) | |
805fc799 AM |
2772 | { |
2773 | bfd_vma TOCstart; | |
2774 | ||
2775 | /* If this is a relocatable link (output_bfd test tells us), just | |
2776 | call the generic function. Any adjustment will be done at final | |
2777 | link time. */ | |
2778 | if (output_bfd != NULL) | |
cedb70c5 | 2779 | return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, |
805fc799 AM |
2780 | input_section, output_bfd, error_message); |
2781 | ||
2782 | TOCstart = _bfd_get_gp_value (input_section->output_section->owner); | |
2783 | if (TOCstart == 0) | |
1c865ab2 | 2784 | TOCstart = ppc64_elf_set_toc (NULL, input_section->output_section->owner); |
805fc799 AM |
2785 | |
2786 | /* Subtract the TOC base address. */ | |
2787 | reloc_entry->addend -= TOCstart + TOC_BASE_OFF; | |
2788 | return bfd_reloc_continue; | |
2789 | } | |
2790 | ||
2791 | static bfd_reloc_status_type | |
4ce794b7 AM |
2792 | ppc64_elf_toc_ha_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, |
2793 | void *data, asection *input_section, | |
2794 | bfd *output_bfd, char **error_message) | |
805fc799 AM |
2795 | { |
2796 | bfd_vma TOCstart; | |
2797 | ||
2798 | /* If this is a relocatable link (output_bfd test tells us), just | |
2799 | call the generic function. Any adjustment will be done at final | |
2800 | link time. */ | |
2801 | if (output_bfd != NULL) | |
cedb70c5 | 2802 | return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, |
805fc799 AM |
2803 | input_section, output_bfd, error_message); |
2804 | ||
2805 | TOCstart = _bfd_get_gp_value (input_section->output_section->owner); | |
2806 | if (TOCstart == 0) | |
1c865ab2 | 2807 | TOCstart = ppc64_elf_set_toc (NULL, input_section->output_section->owner); |
805fc799 AM |
2808 | |
2809 | /* Subtract the TOC base address. */ | |
2810 | reloc_entry->addend -= TOCstart + TOC_BASE_OFF; | |
2811 | ||
2812 | /* Adjust the addend for sign extension of the low 16 bits. */ | |
2813 | reloc_entry->addend += 0x8000; | |
2814 | return bfd_reloc_continue; | |
2815 | } | |
2816 | ||
2817 | static bfd_reloc_status_type | |
4ce794b7 AM |
2818 | ppc64_elf_toc64_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 | bfd_size_type octets; | |
2824 | ||
2825 | /* If this is a relocatable link (output_bfd test tells us), just | |
2826 | call the generic function. Any adjustment will be done at final | |
2827 | link time. */ | |
2828 | if (output_bfd != NULL) | |
cedb70c5 | 2829 | return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, |
805fc799 AM |
2830 | input_section, output_bfd, error_message); |
2831 | ||
2832 | TOCstart = _bfd_get_gp_value (input_section->output_section->owner); | |
2833 | if (TOCstart == 0) | |
1c865ab2 | 2834 | TOCstart = ppc64_elf_set_toc (NULL, input_section->output_section->owner); |
805fc799 AM |
2835 | |
2836 | octets = reloc_entry->address * bfd_octets_per_byte (abfd); | |
2837 | bfd_put_64 (abfd, TOCstart + TOC_BASE_OFF, (bfd_byte *) data + octets); | |
2838 | return bfd_reloc_ok; | |
2839 | } | |
2840 | ||
2841 | static bfd_reloc_status_type | |
4ce794b7 AM |
2842 | ppc64_elf_unhandled_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, |
2843 | void *data, asection *input_section, | |
2844 | bfd *output_bfd, char **error_message) | |
805fc799 AM |
2845 | { |
2846 | /* If this is a relocatable link (output_bfd test tells us), just | |
2847 | call the generic function. Any adjustment will be done at final | |
2848 | link time. */ | |
2849 | if (output_bfd != NULL) | |
cedb70c5 | 2850 | return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, |
805fc799 AM |
2851 | input_section, output_bfd, error_message); |
2852 | ||
2853 | if (error_message != NULL) | |
2854 | { | |
2855 | static char buf[60]; | |
2856 | sprintf (buf, "generic linker can't handle %s", | |
2857 | reloc_entry->howto->name); | |
2858 | *error_message = buf; | |
2859 | } | |
2860 | return bfd_reloc_dangerous; | |
2861 | } | |
2862 | ||
927be08e AM |
2863 | /* Track GOT entries needed for a given symbol. We might need more |
2864 | than one got entry per symbol. */ | |
2865 | struct got_entry | |
2866 | { | |
2867 | struct got_entry *next; | |
2868 | ||
2869 | /* The symbol addend that we'll be placing in the GOT. */ | |
2870 | bfd_vma addend; | |
2871 | ||
2872 | /* Unlike other ELF targets, we use separate GOT entries for the same | |
2873 | symbol referenced from different input files. This is to support | |
2874 | automatic multiple TOC/GOT sections, where the TOC base can vary | |
2875 | from one input file to another. After partitioning into TOC groups | |
2876 | we merge entries within the group. | |
2877 | ||
2878 | Point to the BFD owning this GOT entry. */ | |
2879 | bfd *owner; | |
2880 | ||
2881 | /* Zero for non-tls entries, or TLS_TLS and one of TLS_GD, TLS_LD, | |
2882 | TLS_TPREL or TLS_DTPREL for tls entries. */ | |
f961d9dd | 2883 | unsigned char tls_type; |
927be08e AM |
2884 | |
2885 | /* Non-zero if got.ent points to real entry. */ | |
f961d9dd | 2886 | unsigned char is_indirect; |
927be08e AM |
2887 | |
2888 | /* Reference count until size_dynamic_sections, GOT offset thereafter. */ | |
2889 | union | |
2890 | { | |
2891 | bfd_signed_vma refcount; | |
2892 | bfd_vma offset; | |
2893 | struct got_entry *ent; | |
2894 | } got; | |
2895 | }; | |
2896 | ||
2897 | /* The same for PLT. */ | |
2898 | struct plt_entry | |
2899 | { | |
2900 | struct plt_entry *next; | |
2901 | ||
2902 | bfd_vma addend; | |
2903 | ||
2904 | union | |
2905 | { | |
2906 | bfd_signed_vma refcount; | |
2907 | bfd_vma offset; | |
2908 | } plt; | |
2909 | }; | |
2910 | ||
e717da7e AM |
2911 | struct ppc64_elf_obj_tdata |
2912 | { | |
2913 | struct elf_obj_tdata elf; | |
2914 | ||
2915 | /* Shortcuts to dynamic linker sections. */ | |
2916 | asection *got; | |
2917 | asection *relgot; | |
2918 | ||
b3fac117 AM |
2919 | /* Used during garbage collection. We attach global symbols defined |
2920 | on removed .opd entries to this section so that the sym is removed. */ | |
2921 | asection *deleted_section; | |
81688140 | 2922 | |
927be08e | 2923 | /* TLS local dynamic got entry handling. Support for multiple GOT |
e717da7e | 2924 | sections means we potentially need one of these for each input bfd. */ |
927be08e | 2925 | struct got_entry tlsld_got; |
8860955f | 2926 | |
729eabd5 AM |
2927 | union { |
2928 | /* A copy of relocs before they are modified for --emit-relocs. */ | |
2929 | Elf_Internal_Rela *relocs; | |
2930 | ||
2931 | /* Section contents. */ | |
2932 | bfd_byte *contents; | |
2933 | } opd; | |
d77c8a4b AM |
2934 | |
2935 | /* Nonzero if this bfd has small toc/got relocs, ie. that expect | |
2936 | the reloc to be in the range -32768 to 32767. */ | |
98528052 AM |
2937 | unsigned int has_small_toc_reloc : 1; |
2938 | ||
560c8763 AM |
2939 | /* Set if toc/got ha relocs detected not using r2, or lo reloc |
2940 | instruction not one we handle. */ | |
2941 | unsigned int unexpected_toc_insn : 1; | |
e717da7e AM |
2942 | }; |
2943 | ||
2944 | #define ppc64_elf_tdata(bfd) \ | |
2945 | ((struct ppc64_elf_obj_tdata *) (bfd)->tdata.any) | |
2946 | ||
2947 | #define ppc64_tlsld_got(bfd) \ | |
2948 | (&ppc64_elf_tdata (bfd)->tlsld_got) | |
2949 | ||
0c8d6e5c AM |
2950 | #define is_ppc64_elf(bfd) \ |
2951 | (bfd_get_flavour (bfd) == bfd_target_elf_flavour \ | |
4dfe6ac6 | 2952 | && elf_object_id (bfd) == PPC64_ELF_DATA) |
0c8d6e5c | 2953 | |
e717da7e AM |
2954 | /* Override the generic function because we store some extras. */ |
2955 | ||
2956 | static bfd_boolean | |
2957 | ppc64_elf_mkobject (bfd *abfd) | |
2958 | { | |
0ffa91dd | 2959 | return bfd_elf_allocate_object (abfd, sizeof (struct ppc64_elf_obj_tdata), |
4dfe6ac6 | 2960 | PPC64_ELF_DATA); |
e717da7e AM |
2961 | } |
2962 | ||
feee612b | 2963 | /* Fix bad default arch selected for a 64 bit input bfd when the |
14b57c7c | 2964 | default is 32 bit. Also select arch based on apuinfo. */ |
feee612b | 2965 | |
b34976b6 | 2966 | static bfd_boolean |
4ce794b7 | 2967 | ppc64_elf_object_p (bfd *abfd) |
feee612b | 2968 | { |
14b57c7c AM |
2969 | if (!abfd->arch_info->the_default) |
2970 | return TRUE; | |
2971 | ||
2972 | if (abfd->arch_info->bits_per_word == 32) | |
feee612b AM |
2973 | { |
2974 | Elf_Internal_Ehdr *i_ehdr = elf_elfheader (abfd); | |
2975 | ||
2976 | if (i_ehdr->e_ident[EI_CLASS] == ELFCLASS64) | |
2977 | { | |
2978 | /* Relies on arch after 32 bit default being 64 bit default. */ | |
2979 | abfd->arch_info = abfd->arch_info->next; | |
2980 | BFD_ASSERT (abfd->arch_info->bits_per_word == 64); | |
2981 | } | |
2982 | } | |
14b57c7c | 2983 | return _bfd_elf_ppc_set_arch (abfd); |
feee612b AM |
2984 | } |
2985 | ||
d37c89e5 AM |
2986 | /* Support for core dump NOTE sections. */ |
2987 | ||
2988 | static bfd_boolean | |
2989 | ppc64_elf_grok_prstatus (bfd *abfd, Elf_Internal_Note *note) | |
2990 | { | |
eea6121a | 2991 | size_t offset, size; |
d37c89e5 AM |
2992 | |
2993 | if (note->descsz != 504) | |
2994 | return FALSE; | |
2995 | ||
2996 | /* pr_cursig */ | |
228e534f | 2997 | elf_tdata (abfd)->core->signal = bfd_get_16 (abfd, note->descdata + 12); |
d37c89e5 AM |
2998 | |
2999 | /* pr_pid */ | |
228e534f | 3000 | elf_tdata (abfd)->core->lwpid = bfd_get_32 (abfd, note->descdata + 32); |
d37c89e5 AM |
3001 | |
3002 | /* pr_reg */ | |
3003 | offset = 112; | |
eea6121a | 3004 | size = 384; |
d37c89e5 AM |
3005 | |
3006 | /* Make a ".reg/999" section. */ | |
3007 | return _bfd_elfcore_make_pseudosection (abfd, ".reg", | |
eea6121a | 3008 | size, note->descpos + offset); |
d37c89e5 AM |
3009 | } |
3010 | ||
3011 | static bfd_boolean | |
3012 | ppc64_elf_grok_psinfo (bfd *abfd, Elf_Internal_Note *note) | |
3013 | { | |
3014 | if (note->descsz != 136) | |
3015 | return FALSE; | |
3016 | ||
228e534f | 3017 | elf_tdata (abfd)->core->pid |
bc989cdc | 3018 | = bfd_get_32 (abfd, note->descdata + 24); |
228e534f | 3019 | elf_tdata (abfd)->core->program |
d37c89e5 | 3020 | = _bfd_elfcore_strndup (abfd, note->descdata + 40, 16); |
228e534f | 3021 | elf_tdata (abfd)->core->command |
d37c89e5 AM |
3022 | = _bfd_elfcore_strndup (abfd, note->descdata + 56, 80); |
3023 | ||
3024 | return TRUE; | |
3025 | } | |
3026 | ||
183e98be AM |
3027 | static char * |
3028 | ppc64_elf_write_core_note (bfd *abfd, char *buf, int *bufsiz, int note_type, | |
3029 | ...) | |
3030 | { | |
3031 | switch (note_type) | |
3032 | { | |
3033 | default: | |
3034 | return NULL; | |
3035 | ||
3036 | case NT_PRPSINFO: | |
3037 | { | |
3038 | char data[136]; | |
3039 | va_list ap; | |
3040 | ||
3041 | va_start (ap, note_type); | |
75cd47ed | 3042 | memset (data, 0, sizeof (data)); |
183e98be AM |
3043 | strncpy (data + 40, va_arg (ap, const char *), 16); |
3044 | strncpy (data + 56, va_arg (ap, const char *), 80); | |
3045 | va_end (ap); | |
3046 | return elfcore_write_note (abfd, buf, bufsiz, | |
3047 | "CORE", note_type, data, sizeof (data)); | |
3048 | } | |
3049 | ||
3050 | case NT_PRSTATUS: | |
3051 | { | |
3052 | char data[504]; | |
3053 | va_list ap; | |
3054 | long pid; | |
3055 | int cursig; | |
3056 | const void *greg; | |
3057 | ||
3058 | va_start (ap, note_type); | |
3059 | memset (data, 0, 112); | |
3060 | pid = va_arg (ap, long); | |
3061 | bfd_put_32 (abfd, pid, data + 32); | |
3062 | cursig = va_arg (ap, int); | |
3063 | bfd_put_16 (abfd, cursig, data + 12); | |
3064 | greg = va_arg (ap, const void *); | |
3065 | memcpy (data + 112, greg, 384); | |
3066 | memset (data + 496, 0, 8); | |
3067 | va_end (ap); | |
3068 | return elfcore_write_note (abfd, buf, bufsiz, | |
3069 | "CORE", note_type, data, sizeof (data)); | |
3070 | } | |
3071 | } | |
3072 | } | |
3073 | ||
5d35169e AM |
3074 | /* Add extra PPC sections. */ |
3075 | ||
b35d266b | 3076 | static const struct bfd_elf_special_section ppc64_elf_special_sections[]= |
7f4d3958 | 3077 | { |
07d6d2b8 AM |
3078 | { STRING_COMMA_LEN (".plt"), 0, SHT_NOBITS, 0 }, |
3079 | { STRING_COMMA_LEN (".sbss"), -2, SHT_NOBITS, SHF_ALLOC + SHF_WRITE }, | |
0112cd26 | 3080 | { STRING_COMMA_LEN (".sdata"), -2, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE }, |
07d6d2b8 AM |
3081 | { STRING_COMMA_LEN (".toc"), 0, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE }, |
3082 | { STRING_COMMA_LEN (".toc1"), 0, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE }, | |
0112cd26 | 3083 | { STRING_COMMA_LEN (".tocbss"), 0, SHT_NOBITS, SHF_ALLOC + SHF_WRITE }, |
07d6d2b8 | 3084 | { NULL, 0, 0, 0, 0 } |
5d35169e AM |
3085 | }; |
3086 | ||
7c8fe5c4 AM |
3087 | enum _ppc64_sec_type { |
3088 | sec_normal = 0, | |
3089 | sec_opd = 1, | |
3090 | sec_toc = 2 | |
3091 | }; | |
3092 | ||
f0abc2a1 AM |
3093 | struct _ppc64_elf_section_data |
3094 | { | |
3095 | struct bfd_elf_section_data elf; | |
411e1bfb | 3096 | |
f0abc2a1 AM |
3097 | union |
3098 | { | |
51aecdc5 AM |
3099 | /* An array with one entry for each opd function descriptor, |
3100 | and some spares since opd entries may be either 16 or 24 bytes. */ | |
3101 | #define OPD_NDX(OFF) ((OFF) >> 4) | |
74f0fb50 AM |
3102 | struct _opd_sec_data |
3103 | { | |
3104 | /* Points to the function code section for local opd entries. */ | |
3105 | asection **func_sec; | |
3106 | ||
3107 | /* After editing .opd, adjust references to opd local syms. */ | |
3108 | long *adjust; | |
3109 | } opd; | |
7c8fe5c4 | 3110 | |
3a71aa26 AM |
3111 | /* An array for toc sections, indexed by offset/8. */ |
3112 | struct _toc_sec_data | |
3113 | { | |
3114 | /* Specifies the relocation symbol index used at a given toc offset. */ | |
3115 | unsigned *symndx; | |
3116 | ||
3117 | /* And the relocation addend. */ | |
3118 | bfd_vma *add; | |
3119 | } toc; | |
7c8fe5c4 AM |
3120 | } u; |
3121 | ||
3122 | enum _ppc64_sec_type sec_type:2; | |
411e1bfb | 3123 | |
7c8fe5c4 AM |
3124 | /* Flag set when small branches are detected. Used to |
3125 | select suitable defaults for the stub group size. */ | |
3126 | unsigned int has_14bit_branch:1; | |
3e04d765 AM |
3127 | |
3128 | /* Flag set when PLTCALL relocs are detected. */ | |
3129 | unsigned int has_pltcall:1; | |
f0abc2a1 AM |
3130 | }; |
3131 | ||
3132 | #define ppc64_elf_section_data(sec) \ | |
411e1bfb | 3133 | ((struct _ppc64_elf_section_data *) elf_section_data (sec)) |
f0abc2a1 AM |
3134 | |
3135 | static bfd_boolean | |
4ce794b7 | 3136 | ppc64_elf_new_section_hook (bfd *abfd, asection *sec) |
f0abc2a1 | 3137 | { |
f592407e AM |
3138 | if (!sec->used_by_bfd) |
3139 | { | |
3140 | struct _ppc64_elf_section_data *sdata; | |
3141 | bfd_size_type amt = sizeof (*sdata); | |
f0abc2a1 | 3142 | |
f592407e AM |
3143 | sdata = bfd_zalloc (abfd, amt); |
3144 | if (sdata == NULL) | |
3145 | return FALSE; | |
3146 | sec->used_by_bfd = sdata; | |
3147 | } | |
f0abc2a1 AM |
3148 | |
3149 | return _bfd_elf_new_section_hook (abfd, sec); | |
3150 | } | |
4025353c | 3151 | |
74f0fb50 | 3152 | static struct _opd_sec_data * |
4025353c AM |
3153 | get_opd_info (asection * sec) |
3154 | { | |
3155 | if (sec != NULL | |
3156 | && ppc64_elf_section_data (sec) != NULL | |
7c8fe5c4 | 3157 | && ppc64_elf_section_data (sec)->sec_type == sec_opd) |
74f0fb50 | 3158 | return &ppc64_elf_section_data (sec)->u.opd; |
4025353c AM |
3159 | return NULL; |
3160 | } | |
90e3cdf2 JJ |
3161 | \f |
3162 | /* Parameters for the qsort hook. */ | |
90e3cdf2 | 3163 | static bfd_boolean synthetic_relocatable; |
cd285db5 | 3164 | static asection *synthetic_opd; |
90e3cdf2 | 3165 | |
699733f6 | 3166 | /* qsort comparison function for ppc64_elf_get_synthetic_symtab. */ |
90e3cdf2 JJ |
3167 | |
3168 | static int | |
3169 | compare_symbols (const void *ap, const void *bp) | |
3170 | { | |
3171 | const asymbol *a = * (const asymbol **) ap; | |
3172 | const asymbol *b = * (const asymbol **) bp; | |
3173 | ||
699733f6 AM |
3174 | /* Section symbols first. */ |
3175 | if ((a->flags & BSF_SECTION_SYM) && !(b->flags & BSF_SECTION_SYM)) | |
90e3cdf2 | 3176 | return -1; |
699733f6 | 3177 | if (!(a->flags & BSF_SECTION_SYM) && (b->flags & BSF_SECTION_SYM)) |
90e3cdf2 JJ |
3178 | return 1; |
3179 | ||
699733f6 | 3180 | /* then .opd symbols. */ |
cd285db5 AM |
3181 | if (synthetic_opd != NULL) |
3182 | { | |
3183 | if (strcmp (a->section->name, ".opd") == 0 | |
3184 | && strcmp (b->section->name, ".opd") != 0) | |
3185 | return -1; | |
3186 | if (strcmp (a->section->name, ".opd") != 0 | |
3187 | && strcmp (b->section->name, ".opd") == 0) | |
3188 | return 1; | |
3189 | } | |
90e3cdf2 | 3190 | |
699733f6 | 3191 | /* then other code symbols. */ |
90e3cdf2 JJ |
3192 | if ((a->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL)) |
3193 | == (SEC_CODE | SEC_ALLOC) | |
3194 | && (b->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL)) | |
3195 | != (SEC_CODE | SEC_ALLOC)) | |
3196 | return -1; | |
3197 | ||
3198 | if ((a->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL)) | |
3199 | != (SEC_CODE | SEC_ALLOC) | |
3200 | && (b->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL)) | |
3201 | == (SEC_CODE | SEC_ALLOC)) | |
3202 | return 1; | |
3203 | ||
3204 | if (synthetic_relocatable) | |
3205 | { | |
3206 | if (a->section->id < b->section->id) | |
3207 | return -1; | |
3208 | ||
3209 | if (a->section->id > b->section->id) | |
3210 | return 1; | |
3211 | } | |
3212 | ||
3213 | if (a->value + a->section->vma < b->value + b->section->vma) | |
3214 | return -1; | |
3215 | ||
3216 | if (a->value + a->section->vma > b->value + b->section->vma) | |
3217 | return 1; | |
3218 | ||
4d35a0aa AM |
3219 | /* For syms with the same value, prefer strong dynamic global function |
3220 | syms over other syms. */ | |
3221 | if ((a->flags & BSF_GLOBAL) != 0 && (b->flags & BSF_GLOBAL) == 0) | |
3222 | return -1; | |
3223 | ||
3224 | if ((a->flags & BSF_GLOBAL) == 0 && (b->flags & BSF_GLOBAL) != 0) | |
3225 | return 1; | |
3226 | ||
3227 | if ((a->flags & BSF_FUNCTION) != 0 && (b->flags & BSF_FUNCTION) == 0) | |
3228 | return -1; | |
3229 | ||
3230 | if ((a->flags & BSF_FUNCTION) == 0 && (b->flags & BSF_FUNCTION) != 0) | |
3231 | return 1; | |
3232 | ||
3233 | if ((a->flags & BSF_WEAK) == 0 && (b->flags & BSF_WEAK) != 0) | |
3234 | return -1; | |
3235 | ||
3236 | if ((a->flags & BSF_WEAK) != 0 && (b->flags & BSF_WEAK) == 0) | |
3237 | return 1; | |
3238 | ||
3239 | if ((a->flags & BSF_DYNAMIC) != 0 && (b->flags & BSF_DYNAMIC) == 0) | |
3240 | return -1; | |
3241 | ||
3242 | if ((a->flags & BSF_DYNAMIC) == 0 && (b->flags & BSF_DYNAMIC) != 0) | |
3243 | return 1; | |
3244 | ||
aaed6f5b | 3245 | return a > b; |
90e3cdf2 JJ |
3246 | } |
3247 | ||
699733f6 | 3248 | /* Search SYMS for a symbol of the given VALUE. */ |
90e3cdf2 | 3249 | |
699733f6 | 3250 | static asymbol * |
7292b3ac | 3251 | sym_exists_at (asymbol **syms, long lo, long hi, unsigned int id, bfd_vma value) |
90e3cdf2 | 3252 | { |
699733f6 | 3253 | long mid; |
90e3cdf2 | 3254 | |
7292b3ac | 3255 | if (id == (unsigned) -1) |
699733f6 AM |
3256 | { |
3257 | while (lo < hi) | |
3258 | { | |
3259 | mid = (lo + hi) >> 1; | |
3260 | if (syms[mid]->value + syms[mid]->section->vma < value) | |
3261 | lo = mid + 1; | |
3262 | else if (syms[mid]->value + syms[mid]->section->vma > value) | |
3263 | hi = mid; | |
3264 | else | |
3265 | return syms[mid]; | |
3266 | } | |
3267 | } | |
3268 | else | |
3269 | { | |
3270 | while (lo < hi) | |
3271 | { | |
3272 | mid = (lo + hi) >> 1; | |
3273 | if (syms[mid]->section->id < id) | |
3274 | lo = mid + 1; | |
3275 | else if (syms[mid]->section->id > id) | |
3276 | hi = mid; | |
3277 | else if (syms[mid]->value < value) | |
3278 | lo = mid + 1; | |
3279 | else if (syms[mid]->value > value) | |
3280 | hi = mid; | |
3281 | else | |
3282 | return syms[mid]; | |
3283 | } | |
3284 | } | |
3285 | return NULL; | |
90e3cdf2 JJ |
3286 | } |
3287 | ||
468392fb AM |
3288 | static bfd_boolean |
3289 | section_covers_vma (bfd *abfd ATTRIBUTE_UNUSED, asection *section, void *ptr) | |
3290 | { | |
3291 | bfd_vma vma = *(bfd_vma *) ptr; | |
3292 | return ((section->flags & SEC_ALLOC) != 0 | |
3293 | && section->vma <= vma | |
3294 | && vma < section->vma + section->size); | |
3295 | } | |
3296 | ||
699733f6 | 3297 | /* Create synthetic symbols, effectively restoring "dot-symbol" function |
c4b0b099 AM |
3298 | entry syms. Also generate @plt symbols for the glink branch table. |
3299 | Returns count of synthetic symbols in RET or -1 on error. */ | |
90e3cdf2 JJ |
3300 | |
3301 | static long | |
a7535cf3 AM |
3302 | ppc64_elf_get_synthetic_symtab (bfd *abfd, |
3303 | long static_count, asymbol **static_syms, | |
3304 | long dyn_count, asymbol **dyn_syms, | |
c9727e01 | 3305 | asymbol **ret) |
90e3cdf2 JJ |
3306 | { |
3307 | asymbol *s; | |
0ccf57bd | 3308 | size_t i, j, count; |
90e3cdf2 | 3309 | char *names; |
0ccf57bd | 3310 | size_t symcount, codesecsym, codesecsymend, secsymend, opdsymend; |
ee67d69a | 3311 | asection *opd = NULL; |
90e3cdf2 | 3312 | bfd_boolean relocatable = (abfd->flags & (EXEC_P | DYNAMIC)) == 0; |
a7535cf3 | 3313 | asymbol **syms; |
ee67d69a | 3314 | int abi = abiversion (abfd); |
90e3cdf2 JJ |
3315 | |
3316 | *ret = NULL; | |
3317 | ||
ee67d69a AM |
3318 | if (abi < 2) |
3319 | { | |
3320 | opd = bfd_get_section_by_name (abfd, ".opd"); | |
3321 | if (opd == NULL && abi == 1) | |
3322 | return 0; | |
3323 | } | |
90e3cdf2 | 3324 | |
a5259595 AM |
3325 | syms = NULL; |
3326 | codesecsym = 0; | |
3327 | codesecsymend = 0; | |
3328 | secsymend = 0; | |
3329 | opdsymend = 0; | |
3330 | symcount = 0; | |
3331 | if (opd != NULL) | |
c9727e01 | 3332 | { |
a5259595 AM |
3333 | symcount = static_count; |
3334 | if (!relocatable) | |
3335 | symcount += dyn_count; | |
3336 | if (symcount == 0) | |
3337 | return 0; | |
c9727e01 | 3338 | |
a5259595 AM |
3339 | syms = bfd_malloc ((symcount + 1) * sizeof (*syms)); |
3340 | if (syms == NULL) | |
3341 | return -1; | |
90e3cdf2 | 3342 | |
a5259595 AM |
3343 | if (!relocatable && static_count != 0 && dyn_count != 0) |
3344 | { | |
3345 | /* Use both symbol tables. */ | |
3346 | memcpy (syms, static_syms, static_count * sizeof (*syms)); | |
3347 | memcpy (syms + static_count, dyn_syms, | |
3348 | (dyn_count + 1) * sizeof (*syms)); | |
3349 | } | |
3350 | else if (!relocatable && static_count == 0) | |
3351 | memcpy (syms, dyn_syms, (symcount + 1) * sizeof (*syms)); | |
3352 | else | |
3353 | memcpy (syms, static_syms, (symcount + 1) * sizeof (*syms)); | |
90e3cdf2 | 3354 | |
0ccf57bd AM |
3355 | /* Trim uninteresting symbols. Interesting symbols are section, |
3356 | function, and notype symbols. */ | |
3357 | for (i = 0, j = 0; i < symcount; ++i) | |
3358 | if ((syms[i]->flags & (BSF_FILE | BSF_OBJECT | BSF_THREAD_LOCAL | |
3359 | | BSF_RELC | BSF_SRELC)) == 0) | |
3360 | syms[j++] = syms[i]; | |
3361 | symcount = j; | |
3362 | ||
a5259595 AM |
3363 | synthetic_relocatable = relocatable; |
3364 | synthetic_opd = opd; | |
3365 | qsort (syms, symcount, sizeof (*syms), compare_symbols); | |
90e3cdf2 | 3366 | |
a5259595 AM |
3367 | if (!relocatable && symcount > 1) |
3368 | { | |
bfa5bd2a PA |
3369 | /* Trim duplicate syms, since we may have merged the normal |
3370 | and dynamic symbols. Actually, we only care about syms | |
3371 | that have different values, so trim any with the same | |
3372 | value. Don't consider ifunc and ifunc resolver symbols | |
3373 | duplicates however, because GDB wants to know whether a | |
3374 | text symbol is an ifunc resolver. */ | |
a5259595 | 3375 | for (i = 1, j = 1; i < symcount; ++i) |
bfa5bd2a PA |
3376 | { |
3377 | const asymbol *s0 = syms[i - 1]; | |
3378 | const asymbol *s1 = syms[i]; | |
3379 | ||
3380 | if ((s0->value + s0->section->vma | |
3381 | != s1->value + s1->section->vma) | |
3382 | || ((s0->flags & BSF_GNU_INDIRECT_FUNCTION) | |
3383 | != (s1->flags & BSF_GNU_INDIRECT_FUNCTION))) | |
3384 | syms[j++] = syms[i]; | |
3385 | } | |
a5259595 AM |
3386 | symcount = j; |
3387 | } | |
699733f6 | 3388 | |
a5259595 AM |
3389 | i = 0; |
3390 | /* Note that here and in compare_symbols we can't compare opd and | |
3391 | sym->section directly. With separate debug info files, the | |
3392 | symbols will be extracted from the debug file while abfd passed | |
3393 | to this function is the real binary. */ | |
0ccf57bd | 3394 | if (strcmp (syms[i]->section->name, ".opd") == 0) |
a5259595 AM |
3395 | ++i; |
3396 | codesecsym = i; | |
3397 | ||
3398 | for (; i < symcount; ++i) | |
3399 | if (((syms[i]->section->flags & (SEC_CODE | SEC_ALLOC | |
3400 | | SEC_THREAD_LOCAL)) | |
3401 | != (SEC_CODE | SEC_ALLOC)) | |
3402 | || (syms[i]->flags & BSF_SECTION_SYM) == 0) | |
3403 | break; | |
3404 | codesecsymend = i; | |
3405 | ||
3406 | for (; i < symcount; ++i) | |
3407 | if ((syms[i]->flags & BSF_SECTION_SYM) == 0) | |
3408 | break; | |
3409 | secsymend = i; | |
3410 | ||
3411 | for (; i < symcount; ++i) | |
3412 | if (strcmp (syms[i]->section->name, ".opd") != 0) | |
3413 | break; | |
3414 | opdsymend = i; | |
3415 | ||
3416 | for (; i < symcount; ++i) | |
3417 | if ((syms[i]->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL)) | |
3418 | != (SEC_CODE | SEC_ALLOC)) | |
3419 | break; | |
3420 | symcount = i; | |
3421 | } | |
c9727e01 | 3422 | count = 0; |
90e3cdf2 | 3423 | |
699733f6 | 3424 | if (relocatable) |
90e3cdf2 | 3425 | { |
699733f6 AM |
3426 | bfd_boolean (*slurp_relocs) (bfd *, asection *, asymbol **, bfd_boolean); |
3427 | arelent *r; | |
3428 | size_t size; | |
0ccf57bd | 3429 | size_t relcount; |
90e3cdf2 | 3430 | |
468392fb AM |
3431 | if (opdsymend == secsymend) |
3432 | goto done; | |
3433 | ||
699733f6 | 3434 | slurp_relocs = get_elf_backend_data (abfd)->s->slurp_reloc_table; |
90e3cdf2 | 3435 | relcount = (opd->flags & SEC_RELOC) ? opd->reloc_count : 0; |
7356fed5 | 3436 | if (relcount == 0) |
c9727e01 | 3437 | goto done; |
90e3cdf2 | 3438 | |
7356fed5 AM |
3439 | if (!(*slurp_relocs) (abfd, opd, static_syms, FALSE)) |
3440 | { | |
3441 | count = -1; | |
3442 | goto done; | |
3443 | } | |
3444 | ||
699733f6 | 3445 | size = 0; |
595da8c5 | 3446 | for (i = secsymend, r = opd->relocation; i < opdsymend; ++i) |
699733f6 AM |
3447 | { |
3448 | asymbol *sym; | |
90e3cdf2 | 3449 | |
595da8c5 | 3450 | while (r < opd->relocation + relcount |
699733f6 AM |
3451 | && r->address < syms[i]->value + opd->vma) |
3452 | ++r; | |
90e3cdf2 | 3453 | |
595da8c5 | 3454 | if (r == opd->relocation + relcount) |
699733f6 | 3455 | break; |
90e3cdf2 | 3456 | |
699733f6 AM |
3457 | if (r->address != syms[i]->value + opd->vma) |
3458 | continue; | |
90e3cdf2 | 3459 | |
699733f6 AM |
3460 | if (r->howto->type != R_PPC64_ADDR64) |
3461 | continue; | |
90e3cdf2 | 3462 | |
699733f6 AM |
3463 | sym = *r->sym_ptr_ptr; |
3464 | if (!sym_exists_at (syms, opdsymend, symcount, | |
3465 | sym->section->id, sym->value + r->addend)) | |
3466 | { | |
3467 | ++count; | |
3468 | size += sizeof (asymbol); | |
3469 | size += strlen (syms[i]->name) + 2; | |
3470 | } | |
3471 | } | |
90e3cdf2 | 3472 | |
c4b0b099 AM |
3473 | if (size == 0) |
3474 | goto done; | |
699733f6 AM |
3475 | s = *ret = bfd_malloc (size); |
3476 | if (s == NULL) | |
3477 | { | |
7356fed5 | 3478 | count = -1; |
c9727e01 | 3479 | goto done; |
699733f6 | 3480 | } |
90e3cdf2 | 3481 | |
699733f6 | 3482 | names = (char *) (s + count); |
90e3cdf2 | 3483 | |
595da8c5 | 3484 | for (i = secsymend, r = opd->relocation; i < opdsymend; ++i) |
90e3cdf2 | 3485 | { |
699733f6 | 3486 | asymbol *sym; |
90e3cdf2 | 3487 | |
595da8c5 | 3488 | while (r < opd->relocation + relcount |
699733f6 AM |
3489 | && r->address < syms[i]->value + opd->vma) |
3490 | ++r; | |
90e3cdf2 | 3491 | |
595da8c5 | 3492 | if (r == opd->relocation + relcount) |
699733f6 AM |
3493 | break; |
3494 | ||
3495 | if (r->address != syms[i]->value + opd->vma) | |
3496 | continue; | |
3497 | ||
3498 | if (r->howto->type != R_PPC64_ADDR64) | |
3499 | continue; | |
90e3cdf2 | 3500 | |
699733f6 AM |
3501 | sym = *r->sym_ptr_ptr; |
3502 | if (!sym_exists_at (syms, opdsymend, symcount, | |
3503 | sym->section->id, sym->value + r->addend)) | |
3504 | { | |
3505 | size_t len; | |
3506 | ||
3507 | *s = *syms[i]; | |
6ba2a415 | 3508 | s->flags |= BSF_SYNTHETIC; |
699733f6 AM |
3509 | s->section = sym->section; |
3510 | s->value = sym->value + r->addend; | |
3511 | s->name = names; | |
3512 | *names++ = '.'; | |
3513 | len = strlen (syms[i]->name); | |
3514 | memcpy (names, syms[i]->name, len + 1); | |
3515 | names += len + 1; | |
6f610d07 UW |
3516 | /* Have udata.p point back to the original symbol this |
3517 | synthetic symbol was derived from. */ | |
3518 | s->udata.p = syms[i]; | |
699733f6 AM |
3519 | s++; |
3520 | } | |
3521 | } | |
3522 | } | |
3523 | else | |
90e3cdf2 | 3524 | { |
468392fb | 3525 | bfd_boolean (*slurp_relocs) (bfd *, asection *, asymbol **, bfd_boolean); |
ee67d69a | 3526 | bfd_byte *contents = NULL; |
699733f6 | 3527 | size_t size; |
0ccf57bd | 3528 | size_t plt_count = 0; |
468392fb AM |
3529 | bfd_vma glink_vma = 0, resolv_vma = 0; |
3530 | asection *dynamic, *glink = NULL, *relplt = NULL; | |
3531 | arelent *p; | |
90e3cdf2 | 3532 | |
ee67d69a | 3533 | if (opd != NULL && !bfd_malloc_and_get_section (abfd, opd, &contents)) |
699733f6 | 3534 | { |
c4b0b099 AM |
3535 | free_contents_and_exit_err: |
3536 | count = -1; | |
ee67d69a | 3537 | free_contents_and_exit: |
699733f6 | 3538 | if (contents) |
ee67d69a | 3539 | free (contents); |
c9727e01 | 3540 | goto done; |
699733f6 | 3541 | } |
90e3cdf2 | 3542 | |
699733f6 AM |
3543 | size = 0; |
3544 | for (i = secsymend; i < opdsymend; ++i) | |
3545 | { | |
3546 | bfd_vma ent; | |
90e3cdf2 | 3547 | |
5ef11c02 AM |
3548 | /* Ignore bogus symbols. */ |
3549 | if (syms[i]->value > opd->size - 8) | |
3550 | continue; | |
3551 | ||
699733f6 AM |
3552 | ent = bfd_get_64 (abfd, contents + syms[i]->value); |
3553 | if (!sym_exists_at (syms, opdsymend, symcount, -1, ent)) | |
3554 | { | |
3555 | ++count; | |
3556 | size += sizeof (asymbol); | |
3557 | size += strlen (syms[i]->name) + 2; | |
3558 | } | |
3559 | } | |
90e3cdf2 | 3560 | |
468392fb | 3561 | /* Get start of .glink stubs from DT_PPC64_GLINK. */ |
066ee829 AM |
3562 | if (dyn_count != 0 |
3563 | && (dynamic = bfd_get_section_by_name (abfd, ".dynamic")) != NULL) | |
468392fb AM |
3564 | { |
3565 | bfd_byte *dynbuf, *extdyn, *extdynend; | |
3566 | size_t extdynsize; | |
3567 | void (*swap_dyn_in) (bfd *, const void *, Elf_Internal_Dyn *); | |
3568 | ||
3569 | if (!bfd_malloc_and_get_section (abfd, dynamic, &dynbuf)) | |
c4b0b099 | 3570 | goto free_contents_and_exit_err; |
468392fb AM |
3571 | |
3572 | extdynsize = get_elf_backend_data (abfd)->s->sizeof_dyn; | |
3573 | swap_dyn_in = get_elf_backend_data (abfd)->s->swap_dyn_in; | |
3574 | ||
3575 | extdyn = dynbuf; | |
3576 | extdynend = extdyn + dynamic->size; | |
3577 | for (; extdyn < extdynend; extdyn += extdynsize) | |
3578 | { | |
3579 | Elf_Internal_Dyn dyn; | |
3580 | (*swap_dyn_in) (abfd, extdyn, &dyn); | |
3581 | ||
3582 | if (dyn.d_tag == DT_NULL) | |
3583 | break; | |
3584 | ||
3585 | if (dyn.d_tag == DT_PPC64_GLINK) | |
3586 | { | |
9e390558 AM |
3587 | /* The first glink stub starts at DT_PPC64_GLINK plus 32. |
3588 | See comment in ppc64_elf_finish_dynamic_sections. */ | |
3589 | glink_vma = dyn.d_un.d_val + 8 * 4; | |
468392fb AM |
3590 | /* The .glink section usually does not survive the final |
3591 | link; search for the section (usually .text) where the | |
3592 | glink stubs now reside. */ | |
3593 | glink = bfd_sections_find_if (abfd, section_covers_vma, | |
3594 | &glink_vma); | |
3595 | break; | |
3596 | } | |
3597 | } | |
3598 | ||
3599 | free (dynbuf); | |
3600 | } | |
3601 | ||
3602 | if (glink != NULL) | |
3603 | { | |
3604 | /* Determine __glink trampoline by reading the relative branch | |
3605 | from the first glink stub. */ | |
3606 | bfd_byte buf[4]; | |
b9e5796b AM |
3607 | unsigned int off = 0; |
3608 | ||
3609 | while (bfd_get_section_contents (abfd, glink, buf, | |
3610 | glink_vma + off - glink->vma, 4)) | |
468392fb AM |
3611 | { |
3612 | unsigned int insn = bfd_get_32 (abfd, buf); | |
3613 | insn ^= B_DOT; | |
3614 | if ((insn & ~0x3fffffc) == 0) | |
b9e5796b AM |
3615 | { |
3616 | resolv_vma = glink_vma + off + (insn ^ 0x2000000) - 0x2000000; | |
3617 | break; | |
3618 | } | |
3619 | off += 4; | |
3620 | if (off > 4) | |
3621 | break; | |
468392fb AM |
3622 | } |
3623 | ||
3624 | if (resolv_vma) | |
3625 | size += sizeof (asymbol) + sizeof ("__glink_PLTresolve"); | |
468392fb | 3626 | |
066ee829 AM |
3627 | relplt = bfd_get_section_by_name (abfd, ".rela.plt"); |
3628 | if (relplt != NULL) | |
3629 | { | |
3630 | slurp_relocs = get_elf_backend_data (abfd)->s->slurp_reloc_table; | |
3631 | if (! (*slurp_relocs) (abfd, relplt, dyn_syms, TRUE)) | |
c4b0b099 | 3632 | goto free_contents_and_exit_err; |
68ffbac6 | 3633 | |
066ee829 AM |
3634 | plt_count = relplt->size / sizeof (Elf64_External_Rela); |
3635 | size += plt_count * sizeof (asymbol); | |
468392fb | 3636 | |
066ee829 AM |
3637 | p = relplt->relocation; |
3638 | for (i = 0; i < plt_count; i++, p++) | |
e054468f AM |
3639 | { |
3640 | size += strlen ((*p->sym_ptr_ptr)->name) + sizeof ("@plt"); | |
3641 | if (p->addend != 0) | |
3642 | size += sizeof ("+0x") - 1 + 16; | |
3643 | } | |
066ee829 | 3644 | } |
468392fb AM |
3645 | } |
3646 | ||
c4b0b099 AM |
3647 | if (size == 0) |
3648 | goto free_contents_and_exit; | |
699733f6 AM |
3649 | s = *ret = bfd_malloc (size); |
3650 | if (s == NULL) | |
c4b0b099 | 3651 | goto free_contents_and_exit_err; |
90e3cdf2 | 3652 | |
468392fb | 3653 | names = (char *) (s + count + plt_count + (resolv_vma != 0)); |
90e3cdf2 | 3654 | |
699733f6 | 3655 | for (i = secsymend; i < opdsymend; ++i) |
90e3cdf2 | 3656 | { |
699733f6 | 3657 | bfd_vma ent; |
90e3cdf2 | 3658 | |
5ef11c02 AM |
3659 | if (syms[i]->value > opd->size - 8) |
3660 | continue; | |
3661 | ||
699733f6 AM |
3662 | ent = bfd_get_64 (abfd, contents + syms[i]->value); |
3663 | if (!sym_exists_at (syms, opdsymend, symcount, -1, ent)) | |
90e3cdf2 | 3664 | { |
0ccf57bd | 3665 | size_t lo, hi; |
699733f6 | 3666 | size_t len; |
c9727e01 | 3667 | asection *sec = abfd->sections; |
90e3cdf2 | 3668 | |
699733f6 AM |
3669 | *s = *syms[i]; |
3670 | lo = codesecsym; | |
3671 | hi = codesecsymend; | |
3672 | while (lo < hi) | |
3673 | { | |
0ccf57bd | 3674 | size_t mid = (lo + hi) >> 1; |
699733f6 AM |
3675 | if (syms[mid]->section->vma < ent) |
3676 | lo = mid + 1; | |
3677 | else if (syms[mid]->section->vma > ent) | |
3678 | hi = mid; | |
3679 | else | |
c9727e01 AM |
3680 | { |
3681 | sec = syms[mid]->section; | |
3682 | break; | |
3683 | } | |
699733f6 AM |
3684 | } |
3685 | ||
c9727e01 | 3686 | if (lo >= hi && lo > codesecsym) |
699733f6 | 3687 | sec = syms[lo - 1]->section; |
699733f6 AM |
3688 | |
3689 | for (; sec != NULL; sec = sec->next) | |
3690 | { | |
3691 | if (sec->vma > ent) | |
3692 | break; | |
63524580 JK |
3693 | /* SEC_LOAD may not be set if SEC is from a separate debug |
3694 | info file. */ | |
3695 | if ((sec->flags & SEC_ALLOC) == 0) | |
699733f6 AM |
3696 | break; |
3697 | if ((sec->flags & SEC_CODE) != 0) | |
3698 | s->section = sec; | |
3699 | } | |
6ba2a415 | 3700 | s->flags |= BSF_SYNTHETIC; |
699733f6 AM |
3701 | s->value = ent - s->section->vma; |
3702 | s->name = names; | |
3703 | *names++ = '.'; | |
3704 | len = strlen (syms[i]->name); | |
3705 | memcpy (names, syms[i]->name, len + 1); | |
3706 | names += len + 1; | |
6f610d07 UW |
3707 | /* Have udata.p point back to the original symbol this |
3708 | synthetic symbol was derived from. */ | |
3709 | s->udata.p = syms[i]; | |
699733f6 | 3710 | s++; |
90e3cdf2 | 3711 | } |
90e3cdf2 | 3712 | } |
699733f6 | 3713 | free (contents); |
468392fb AM |
3714 | |
3715 | if (glink != NULL && relplt != NULL) | |
3716 | { | |
3717 | if (resolv_vma) | |
3718 | { | |
3719 | /* Add a symbol for the main glink trampoline. */ | |
86a4952b | 3720 | memset (s, 0, sizeof *s); |
468392fb | 3721 | s->the_bfd = abfd; |
6ba2a415 | 3722 | s->flags = BSF_GLOBAL | BSF_SYNTHETIC; |
468392fb AM |
3723 | s->section = glink; |
3724 | s->value = resolv_vma - glink->vma; | |
3725 | s->name = names; | |
3726 | memcpy (names, "__glink_PLTresolve", sizeof ("__glink_PLTresolve")); | |
3727 | names += sizeof ("__glink_PLTresolve"); | |
3728 | s++; | |
3729 | count++; | |
3730 | } | |
3731 | ||
3732 | /* FIXME: It would be very much nicer to put sym@plt on the | |
3733 | stub rather than on the glink branch table entry. The | |
3734 | objdump disassembler would then use a sensible symbol | |
3735 | name on plt calls. The difficulty in doing so is | |
3736 | a) finding the stubs, and, | |
3737 | b) matching stubs against plt entries, and, | |
3738 | c) there can be multiple stubs for a given plt entry. | |
3739 | ||
3740 | Solving (a) could be done by code scanning, but older | |
3741 | ppc64 binaries used different stubs to current code. | |
3742 | (b) is the tricky one since you need to known the toc | |
3743 | pointer for at least one function that uses a pic stub to | |
3744 | be able to calculate the plt address referenced. | |
3745 | (c) means gdb would need to set multiple breakpoints (or | |
3746 | find the glink branch itself) when setting breakpoints | |
3747 | for pending shared library loads. */ | |
3748 | p = relplt->relocation; | |
3749 | for (i = 0; i < plt_count; i++, p++) | |
3750 | { | |
3751 | size_t len; | |
3752 | ||
3753 | *s = **p->sym_ptr_ptr; | |
3754 | /* Undefined syms won't have BSF_LOCAL or BSF_GLOBAL set. Since | |
3755 | we are defining a symbol, ensure one of them is set. */ | |
3756 | if ((s->flags & BSF_LOCAL) == 0) | |
3757 | s->flags |= BSF_GLOBAL; | |
6ba2a415 | 3758 | s->flags |= BSF_SYNTHETIC; |
468392fb AM |
3759 | s->section = glink; |
3760 | s->value = glink_vma - glink->vma; | |
3761 | s->name = names; | |
3762 | s->udata.p = NULL; | |
3763 | len = strlen ((*p->sym_ptr_ptr)->name); | |
3764 | memcpy (names, (*p->sym_ptr_ptr)->name, len); | |
3765 | names += len; | |
e054468f AM |
3766 | if (p->addend != 0) |
3767 | { | |
3768 | memcpy (names, "+0x", sizeof ("+0x") - 1); | |
3769 | names += sizeof ("+0x") - 1; | |
3770 | bfd_sprintf_vma (abfd, names, p->addend); | |
3771 | names += strlen (names); | |
3772 | } | |
468392fb AM |
3773 | memcpy (names, "@plt", sizeof ("@plt")); |
3774 | names += sizeof ("@plt"); | |
3775 | s++; | |
b9e5796b AM |
3776 | if (abi < 2) |
3777 | { | |
3778 | glink_vma += 8; | |
3779 | if (i >= 0x8000) | |
3780 | glink_vma += 4; | |
3781 | } | |
3782 | else | |
468392fb AM |
3783 | glink_vma += 4; |
3784 | } | |
3785 | count += plt_count; | |
3786 | } | |
90e3cdf2 JJ |
3787 | } |
3788 | ||
c9727e01 | 3789 | done: |
a7535cf3 | 3790 | free (syms); |
90e3cdf2 JJ |
3791 | return count; |
3792 | } | |
5bd4f169 | 3793 | \f |
65f38f15 AM |
3794 | /* The following functions are specific to the ELF linker, while |
3795 | functions above are used generally. Those named ppc64_elf_* are | |
3796 | called by the main ELF linker code. They appear in this file more | |
3797 | or less in the order in which they are called. eg. | |
3798 | ppc64_elf_check_relocs is called early in the link process, | |
3799 | ppc64_elf_finish_dynamic_sections is one of the last functions | |
e86ce104 AM |
3800 | called. |
3801 | ||
3802 | PowerPC64-ELF uses a similar scheme to PowerPC64-XCOFF in that | |
3803 | functions have both a function code symbol and a function descriptor | |
3804 | symbol. A call to foo in a relocatable object file looks like: | |
3805 | ||
3806 | . .text | |
3807 | . x: | |
3808 | . bl .foo | |
3809 | . nop | |
3810 | ||
3811 | The function definition in another object file might be: | |
3812 | ||
3813 | . .section .opd | |
3814 | . foo: .quad .foo | |
3815 | . .quad .TOC.@tocbase | |
3816 | . .quad 0 | |
3817 | . | |
3818 | . .text | |
3819 | . .foo: blr | |
3820 | ||
3821 | When the linker resolves the call during a static link, the branch | |
3822 | unsurprisingly just goes to .foo and the .opd information is unused. | |
3823 | If the function definition is in a shared library, things are a little | |
3824 | different: The call goes via a plt call stub, the opd information gets | |
3825 | copied to the plt, and the linker patches the nop. | |
3826 | ||
3827 | . x: | |
3828 | . bl .foo_stub | |
3829 | . ld 2,40(1) | |
3830 | . | |
3831 | . | |
3832 | . .foo_stub: | |
71a39c98 AM |
3833 | . std 2,40(1) # in practice, the call stub |
3834 | . addis 11,2,Lfoo@toc@ha # is slightly optimized, but | |
3835 | . addi 11,11,Lfoo@toc@l # this is the general idea | |
3836 | . ld 12,0(11) | |
3837 | . ld 2,8(11) | |
3838 | . mtctr 12 | |
3839 | . ld 11,16(11) | |
e86ce104 AM |
3840 | . bctr |
3841 | . | |
3842 | . .section .plt | |
3843 | . Lfoo: reloc (R_PPC64_JMP_SLOT, foo) | |
3844 | ||
3845 | The "reloc ()" notation is supposed to indicate that the linker emits | |
3846 | an R_PPC64_JMP_SLOT reloc against foo. The dynamic linker does the opd | |
3847 | copying. | |
3848 | ||
3849 | What are the difficulties here? Well, firstly, the relocations | |
3850 | examined by the linker in check_relocs are against the function code | |
3851 | sym .foo, while the dynamic relocation in the plt is emitted against | |
3852 | the function descriptor symbol, foo. Somewhere along the line, we need | |
3853 | to carefully copy dynamic link information from one symbol to the other. | |
3854 | Secondly, the generic part of the elf linker will make .foo a dynamic | |
3855 | symbol as is normal for most other backends. We need foo dynamic | |
3856 | instead, at least for an application final link. However, when | |
3857 | creating a shared library containing foo, we need to have both symbols | |
3858 | dynamic so that references to .foo are satisfied during the early | |
3859 | stages of linking. Otherwise the linker might decide to pull in a | |
8387904d AM |
3860 | definition from some other object, eg. a static library. |
3861 | ||
3862 | Update: As of August 2004, we support a new convention. Function | |
3863 | calls may use the function descriptor symbol, ie. "bl foo". This | |
3864 | behaves exactly as "bl .foo". */ | |
65f38f15 | 3865 | |
7c8bbca5 AM |
3866 | /* Of those relocs that might be copied as dynamic relocs, this |
3867 | function selects those that must be copied when linking a shared | |
3868 | library or PIE, even when the symbol is local. */ | |
65f38f15 | 3869 | |
1d483afe AM |
3870 | static int |
3871 | must_be_dyn_reloc (struct bfd_link_info *info, | |
3872 | enum elf_ppc64_reloc_type r_type) | |
3873 | { | |
3874 | switch (r_type) | |
3875 | { | |
3876 | default: | |
7c8bbca5 AM |
3877 | /* Only relative relocs can be resolved when the object load |
3878 | address isn't fixed. DTPREL64 is excluded because the | |
3879 | dynamic linker needs to differentiate global dynamic from | |
3880 | local dynamic __tls_index pairs when PPC64_OPT_TLS is set. */ | |
1d483afe AM |
3881 | return 1; |
3882 | ||
3883 | case R_PPC64_REL32: | |
3884 | case R_PPC64_REL64: | |
3885 | case R_PPC64_REL30: | |
3886 | return 0; | |
3887 | ||
3888 | case R_PPC64_TPREL16: | |
3889 | case R_PPC64_TPREL16_LO: | |
3890 | case R_PPC64_TPREL16_HI: | |
3891 | case R_PPC64_TPREL16_HA: | |
3892 | case R_PPC64_TPREL16_DS: | |
3893 | case R_PPC64_TPREL16_LO_DS: | |
f9c6b907 AM |
3894 | case R_PPC64_TPREL16_HIGH: |
3895 | case R_PPC64_TPREL16_HIGHA: | |
1d483afe AM |
3896 | case R_PPC64_TPREL16_HIGHER: |
3897 | case R_PPC64_TPREL16_HIGHERA: | |
3898 | case R_PPC64_TPREL16_HIGHEST: | |
3899 | case R_PPC64_TPREL16_HIGHESTA: | |
3900 | case R_PPC64_TPREL64: | |
7c8bbca5 AM |
3901 | /* These relocations are relative but in a shared library the |
3902 | linker doesn't know the thread pointer base. */ | |
3903 | return bfd_link_dll (info); | |
1d483afe AM |
3904 | } |
3905 | } | |
65f38f15 | 3906 | |
f4656909 AM |
3907 | /* If ELIMINATE_COPY_RELOCS is non-zero, the linker will try to avoid |
3908 | copying dynamic variables from a shared lib into an app's dynbss | |
3909 | section, and instead use a dynamic relocation to point into the | |
5d35169e AM |
3910 | shared lib. With code that gcc generates, it's vital that this be |
3911 | enabled; In the PowerPC64 ABI, the address of a function is actually | |
3912 | the address of a function descriptor, which resides in the .opd | |
3913 | section. gcc uses the descriptor directly rather than going via the | |
3914 | GOT as some other ABI's do, which means that initialized function | |
3915 | pointers must reference the descriptor. Thus, a function pointer | |
3916 | initialized to the address of a function in a shared library will | |
3917 | either require a copy reloc, or a dynamic reloc. Using a copy reloc | |
4cc11e76 | 3918 | redefines the function descriptor symbol to point to the copy. This |
5d35169e AM |
3919 | presents a problem as a plt entry for that function is also |
3920 | initialized from the function descriptor symbol and the copy reloc | |
3921 | may not be initialized first. */ | |
a23b6845 | 3922 | #define ELIMINATE_COPY_RELOCS 1 |
f4656909 | 3923 | |
721956f4 | 3924 | /* Section name for stubs is the associated section name plus this |
29942be8 NC |
3925 | string. */ |
3926 | #define STUB_SUFFIX ".stub" | |
721956f4 AM |
3927 | |
3928 | /* Linker stubs. | |
3929 | ppc_stub_long_branch: | |
3930 | Used when a 14 bit branch (or even a 24 bit branch) can't reach its | |
3931 | destination, but a 24 bit branch in a stub section will reach. | |
3932 | . b dest | |
3933 | ||
3934 | ppc_stub_plt_branch: | |
3935 | Similar to the above, but a 24 bit branch in the stub section won't | |
3936 | reach its destination. | |
71a39c98 AM |
3937 | . addis %r11,%r2,xxx@toc@ha |
3938 | . ld %r12,xxx@toc@l(%r11) | |
3939 | . mtctr %r12 | |
721956f4 AM |
3940 | . bctr |
3941 | ||
3942 | ppc_stub_plt_call: | |
2c66dc6c AM |
3943 | Used to call a function in a shared library. If it so happens that |
3944 | the plt entry referenced crosses a 64k boundary, then an extra | |
71a39c98 | 3945 | "addi %r11,%r11,xxx@toc@l" will be inserted before the "mtctr". |
721956f4 | 3946 | . std %r2,40(%r1) |
71a39c98 AM |
3947 | . addis %r11,%r2,xxx@toc@ha |
3948 | . ld %r12,xxx+0@toc@l(%r11) | |
3949 | . mtctr %r12 | |
3950 | . ld %r2,xxx+8@toc@l(%r11) | |
3951 | . ld %r11,xxx+16@toc@l(%r11) | |
721956f4 | 3952 | . bctr |
ad8e1ba5 AM |
3953 | |
3954 | ppc_stub_long_branch and ppc_stub_plt_branch may also have additional | |
3955 | code to adjust the value and save r2 to support multiple toc sections. | |
3956 | A ppc_stub_long_branch with an r2 offset looks like: | |
3957 | . std %r2,40(%r1) | |
3958 | . addis %r2,%r2,off@ha | |
3959 | . addi %r2,%r2,off@l | |
3960 | . b dest | |
3961 | ||
3962 | A ppc_stub_plt_branch with an r2 offset looks like: | |
3963 | . std %r2,40(%r1) | |
71a39c98 AM |
3964 | . addis %r11,%r2,xxx@toc@ha |
3965 | . ld %r12,xxx@toc@l(%r11) | |
ad8e1ba5 AM |
3966 | . addis %r2,%r2,off@ha |
3967 | . addi %r2,%r2,off@l | |
71a39c98 | 3968 | . mtctr %r12 |
ad8e1ba5 | 3969 | . bctr |
ac2df442 AM |
3970 | |
3971 | In cases where the "addis" instruction would add zero, the "addis" is | |
3972 | omitted and following instructions modified slightly in some cases. | |
721956f4 AM |
3973 | */ |
3974 | ||
3975 | enum ppc_stub_type { | |
3976 | ppc_stub_none, | |
3977 | ppc_stub_long_branch, | |
ad8e1ba5 | 3978 | ppc_stub_long_branch_r2off, |
721956f4 | 3979 | ppc_stub_plt_branch, |
ad8e1ba5 | 3980 | ppc_stub_plt_branch_r2off, |
794e51c0 | 3981 | ppc_stub_plt_call, |
7341d5e2 | 3982 | ppc_stub_plt_call_r2save, |
a4b6fadd AM |
3983 | ppc_stub_global_entry, |
3984 | ppc_stub_save_res | |
721956f4 AM |
3985 | }; |
3986 | ||
6f20ed8a AM |
3987 | /* Information on stub grouping. */ |
3988 | struct map_stub | |
3989 | { | |
3990 | /* The stub section. */ | |
3991 | asection *stub_sec; | |
3992 | /* This is the section to which stubs in the group will be attached. */ | |
3993 | asection *link_sec; | |
a4b6fadd AM |
3994 | /* Next group. */ |
3995 | struct map_stub *next; | |
3996 | /* Whether to emit a copy of register save/restore functions in this | |
3997 | group. */ | |
3998 | int needs_save_res; | |
d4aaa2a0 AM |
3999 | /* The offset of the __tls_get_addr_opt plt stub bctrl in this group, |
4000 | or -1u if no such stub with bctrl exists. */ | |
4001 | unsigned int tls_get_addr_opt_bctrl; | |
6f20ed8a AM |
4002 | }; |
4003 | ||
721956f4 AM |
4004 | struct ppc_stub_hash_entry { |
4005 | ||
4006 | /* Base hash table entry structure. */ | |
4007 | struct bfd_hash_entry root; | |
4008 | ||
ad8e1ba5 AM |
4009 | enum ppc_stub_type stub_type; |
4010 | ||
6f20ed8a AM |
4011 | /* Group information. */ |
4012 | struct map_stub *group; | |
721956f4 AM |
4013 | |
4014 | /* Offset within stub_sec of the beginning of this stub. */ | |
4015 | bfd_vma stub_offset; | |
4016 | ||
4017 | /* Given the symbol's value and its section we can determine its final | |
4018 | value when building the stubs (so the stub knows where to jump. */ | |
4019 | bfd_vma target_value; | |
4020 | asection *target_section; | |
4021 | ||
721956f4 AM |
4022 | /* The symbol table entry, if any, that this was derived from. */ |
4023 | struct ppc_link_hash_entry *h; | |
e054468f | 4024 | struct plt_entry *plt_ent; |
721956f4 | 4025 | |
2d7ad24e AM |
4026 | /* Symbol type. */ |
4027 | unsigned char symtype; | |
4028 | ||
6911b7dc AM |
4029 | /* Symbol st_other. */ |
4030 | unsigned char other; | |
721956f4 AM |
4031 | }; |
4032 | ||
4033 | struct ppc_branch_hash_entry { | |
4034 | ||
4035 | /* Base hash table entry structure. */ | |
4036 | struct bfd_hash_entry root; | |
4037 | ||
c456f082 | 4038 | /* Offset within branch lookup table. */ |
721956f4 AM |
4039 | unsigned int offset; |
4040 | ||
4041 | /* Generation marker. */ | |
4042 | unsigned int iter; | |
4043 | }; | |
65f38f15 | 4044 | |
19e08130 AM |
4045 | /* Used to track dynamic relocations for local symbols. */ |
4046 | struct ppc_dyn_relocs | |
4047 | { | |
4048 | struct ppc_dyn_relocs *next; | |
4049 | ||
4050 | /* The input section of the reloc. */ | |
4051 | asection *sec; | |
4052 | ||
4053 | /* Total number of relocs copied for the input section. */ | |
4054 | unsigned int count : 31; | |
4055 | ||
4056 | /* Whether this entry is for STT_GNU_IFUNC symbols. */ | |
4057 | unsigned int ifunc : 1; | |
4058 | }; | |
4059 | ||
65f38f15 AM |
4060 | struct ppc_link_hash_entry |
4061 | { | |
4062 | struct elf_link_hash_entry elf; | |
4063 | ||
b3fac117 AM |
4064 | union { |
4065 | /* A pointer to the most recently used stub hash entry against this | |
4066 | symbol. */ | |
4067 | struct ppc_stub_hash_entry *stub_cache; | |
4068 | ||
4069 | /* A pointer to the next symbol starting with a '.' */ | |
4070 | struct ppc_link_hash_entry *next_dot_sym; | |
4071 | } u; | |
721956f4 | 4072 | |
65f38f15 | 4073 | /* Track dynamic relocs copied for this symbol. */ |
6061a67d | 4074 | struct elf_dyn_relocs *dyn_relocs; |
e86ce104 | 4075 | |
721956f4 | 4076 | /* Link between function code and descriptor symbols. */ |
34814b9f | 4077 | struct ppc_link_hash_entry *oh; |
721956f4 | 4078 | |
e86ce104 AM |
4079 | /* Flag function code and descriptor symbols. */ |
4080 | unsigned int is_func:1; | |
4081 | unsigned int is_func_descriptor:1; | |
908b32fc | 4082 | unsigned int fake:1; |
411e1bfb | 4083 | |
c5614fa4 AM |
4084 | /* Whether global opd/toc sym has been adjusted or not. |
4085 | After ppc64_elf_edit_opd/ppc64_elf_edit_toc has run, this flag | |
4086 | should be set for all globals defined in any opd/toc section. */ | |
754021d0 AM |
4087 | unsigned int adjust_done:1; |
4088 | ||
a4b6fadd AM |
4089 | /* Set if this is an out-of-line register save/restore function, |
4090 | with non-standard calling convention. */ | |
4091 | unsigned int save_res:1; | |
4092 | ||
8b5f1ed8 AM |
4093 | /* Set if a duplicate symbol with non-zero localentry is detected, |
4094 | even when the duplicate symbol does not provide a definition. */ | |
4095 | unsigned int non_zero_localentry:1; | |
4096 | ||
411e1bfb | 4097 | /* Contexts in which symbol is used in the GOT (or TOC). |
37da22e5 AM |
4098 | Bits are or'd into the mask as the corresponding relocs are |
4099 | encountered during check_relocs, with TLS_TLS being set when any | |
4100 | of the other TLS bits are set. tls_optimize clears bits when | |
4101 | optimizing to indicate the corresponding GOT entry type is not | |
4102 | needed. If set, TLS_TLS is never cleared. tls_optimize may also | |
4103 | set TLS_TPRELGD when a GD reloc turns into a TPREL one. We use a | |
4104 | separate flag rather than setting TPREL just for convenience in | |
4105 | distinguishing the two cases. | |
4106 | These flags are also kept for local symbols. */ | |
4107 | #define TLS_TLS 1 /* Any TLS reloc. */ | |
4108 | #define TLS_GD 2 /* GD reloc. */ | |
4109 | #define TLS_LD 4 /* LD reloc. */ | |
4110 | #define TLS_TPREL 8 /* TPREL reloc, => IE. */ | |
4111 | #define TLS_DTPREL 16 /* DTPREL reloc, => LD. */ | |
4112 | #define TLS_MARK 32 /* __tls_get_addr call marked. */ | |
e7b938ca | 4113 | #define TLS_TPRELGD 64 /* TPREL reloc resulting from GD->IE. */ |
37da22e5 | 4114 | #define TLS_EXPLICIT 128 /* Marks TOC section TLS relocs. */ |
f961d9dd | 4115 | unsigned char tls_mask; |
37da22e5 AM |
4116 | |
4117 | /* The above field is also used to mark function symbols. In which | |
4118 | case TLS_TLS will be 0. */ | |
4119 | #define PLT_IFUNC 2 /* STT_GNU_IFUNC. */ | |
2d7ad24e | 4120 | #define PLT_KEEP 4 /* inline plt call requires plt entry. */ |
37da22e5 | 4121 | #define NON_GOT 256 /* local symbol plt, not stored. */ |
65f38f15 AM |
4122 | }; |
4123 | ||
4124 | /* ppc64 ELF linker hash table. */ | |
4125 | ||
4126 | struct ppc_link_hash_table | |
4127 | { | |
4128 | struct elf_link_hash_table elf; | |
4129 | ||
721956f4 AM |
4130 | /* The stub hash table. */ |
4131 | struct bfd_hash_table stub_hash_table; | |
4132 | ||
4133 | /* Another hash table for plt_branch stubs. */ | |
4134 | struct bfd_hash_table branch_hash_table; | |
4135 | ||
3b421ab3 AM |
4136 | /* Hash table for function prologue tocsave. */ |
4137 | htab_t tocsave_htab; | |
4138 | ||
e7d1c40c AM |
4139 | /* Various options and other info passed from the linker. */ |
4140 | struct ppc64_elf_params *params; | |
721956f4 | 4141 | |
6f20ed8a AM |
4142 | /* The size of sec_info below. */ |
4143 | unsigned int sec_info_arr_size; | |
4144 | ||
4145 | /* Per-section array of extra section info. Done this way rather | |
4146 | than as part of ppc64_elf_section_data so we have the info for | |
4147 | non-ppc64 sections. */ | |
4148 | struct | |
4149 | { | |
4150 | /* Along with elf_gp, specifies the TOC pointer used by this section. */ | |
ad8e1ba5 | 4151 | bfd_vma toc_off; |
6f20ed8a AM |
4152 | |
4153 | union | |
4154 | { | |
4155 | /* The section group that this section belongs to. */ | |
4156 | struct map_stub *group; | |
4157 | /* A temp section list pointer. */ | |
4158 | asection *list; | |
4159 | } u; | |
4160 | } *sec_info; | |
721956f4 | 4161 | |
a4b6fadd AM |
4162 | /* Linked list of groups. */ |
4163 | struct map_stub *group; | |
4164 | ||
ad8e1ba5 AM |
4165 | /* Temp used when calculating TOC pointers. */ |
4166 | bfd_vma toc_curr; | |
bf102f86 AM |
4167 | bfd *toc_bfd; |
4168 | asection *toc_first_sec; | |
ad8e1ba5 | 4169 | |
b3fac117 AM |
4170 | /* Used when adding symbols. */ |
4171 | struct ppc_link_hash_entry *dot_syms; | |
4172 | ||
33e44f2e | 4173 | /* Shortcuts to get to dynamic linker sections. */ |
4ce794b7 | 4174 | asection *glink; |
9e390558 | 4175 | asection *global_entry; |
82bd7b59 | 4176 | asection *sfpr; |
2d7ad24e AM |
4177 | asection *pltlocal; |
4178 | asection *relpltlocal; | |
4ce794b7 AM |
4179 | asection *brlt; |
4180 | asection *relbrlt; | |
58d180e8 | 4181 | asection *glink_eh_frame; |
ec338859 | 4182 | |
8387904d AM |
4183 | /* Shortcut to .__tls_get_addr and __tls_get_addr. */ |
4184 | struct ppc_link_hash_entry *tls_get_addr; | |
4185 | struct ppc_link_hash_entry *tls_get_addr_fd; | |
411e1bfb | 4186 | |
927be08e AM |
4187 | /* The size of reliplt used by got entry relocs. */ |
4188 | bfd_size_type got_reli_size; | |
4189 | ||
9b5ecbd0 | 4190 | /* Statistics. */ |
7341d5e2 | 4191 | unsigned long stub_count[ppc_stub_global_entry]; |
9b5ecbd0 | 4192 | |
ee75fd95 AM |
4193 | /* Number of stubs against global syms. */ |
4194 | unsigned long stub_globals; | |
4195 | ||
ee67d69a AM |
4196 | /* Set if we're linking code with function descriptors. */ |
4197 | unsigned int opd_abi:1; | |
4198 | ||
4c52953f | 4199 | /* Support for multiple toc sections. */ |
33c0ec9d | 4200 | unsigned int do_multi_toc:1; |
4c52953f | 4201 | unsigned int multi_toc_needed:1; |
927be08e | 4202 | unsigned int second_toc_pass:1; |
67f0cbdb | 4203 | unsigned int do_toc_opt:1; |
4c52953f | 4204 | |
9a23f96e AM |
4205 | /* Set if tls optimization is enabled. */ |
4206 | unsigned int do_tls_opt:1; | |
4207 | ||
3e04d765 AM |
4208 | /* Set if inline plt calls should be converted to direct calls. */ |
4209 | unsigned int can_convert_all_inline_plt:1; | |
4210 | ||
5d1634d7 | 4211 | /* Set on error. */ |
99877b66 | 4212 | unsigned int stub_error:1; |
721956f4 | 4213 | |
8c5b4e52 AM |
4214 | /* Whether func_desc_adjust needs to be run over symbols. */ |
4215 | unsigned int need_func_desc_adj:1; | |
721956f4 | 4216 | |
82e66161 AM |
4217 | /* Whether there exist local gnu indirect function resolvers, |
4218 | referenced by dynamic relocations. */ | |
4219 | unsigned int local_ifunc_resolver:1; | |
4220 | unsigned int maybe_local_ifunc_resolver:1; | |
4221 | ||
f378ab09 AM |
4222 | /* Whether plt calls for ELFv2 localentry:0 funcs have been optimized. */ |
4223 | unsigned int has_plt_localentry0:1; | |
4224 | ||
721956f4 AM |
4225 | /* Incremented every time we size stubs. */ |
4226 | unsigned int stub_iteration; | |
5d1634d7 | 4227 | |
87d72d41 AM |
4228 | /* Small local sym cache. */ |
4229 | struct sym_cache sym_cache; | |
65f38f15 AM |
4230 | }; |
4231 | ||
4c52953f AM |
4232 | /* Rename some of the generic section flags to better document how they |
4233 | are used here. */ | |
b0dddeec AM |
4234 | |
4235 | /* Nonzero if this section has TLS related relocations. */ | |
4236 | #define has_tls_reloc sec_flg0 | |
4237 | ||
23cedd1d | 4238 | /* Nonzero if this section has an old-style call to __tls_get_addr. */ |
b0dddeec AM |
4239 | #define has_tls_get_addr_call sec_flg1 |
4240 | ||
4241 | /* Nonzero if this section has any toc or got relocs. */ | |
4242 | #define has_toc_reloc sec_flg2 | |
4243 | ||
4244 | /* Nonzero if this section has a call to another section that uses | |
4245 | the toc or got. */ | |
d77c8a4b | 4246 | #define makes_toc_func_call sec_flg3 |
b0dddeec AM |
4247 | |
4248 | /* Recursion protection when determining above flag. */ | |
d77c8a4b | 4249 | #define call_check_in_progress sec_flg4 |
70cc837d | 4250 | #define call_check_done sec_flg5 |
4c52953f | 4251 | |
65f38f15 AM |
4252 | /* Get the ppc64 ELF linker hash table from a link_info structure. */ |
4253 | ||
4254 | #define ppc_hash_table(p) \ | |
4dfe6ac6 NC |
4255 | (elf_hash_table_id ((struct elf_link_hash_table *) ((p)->hash)) \ |
4256 | == PPC64_ELF_DATA ? ((struct ppc_link_hash_table *) ((p)->hash)) : NULL) | |
65f38f15 | 4257 | |
721956f4 AM |
4258 | #define ppc_stub_hash_lookup(table, string, create, copy) \ |
4259 | ((struct ppc_stub_hash_entry *) \ | |
4260 | bfd_hash_lookup ((table), (string), (create), (copy))) | |
4261 | ||
4262 | #define ppc_branch_hash_lookup(table, string, create, copy) \ | |
4263 | ((struct ppc_branch_hash_entry *) \ | |
4264 | bfd_hash_lookup ((table), (string), (create), (copy))) | |
4265 | ||
4266 | /* Create an entry in the stub hash table. */ | |
4267 | ||
4268 | static struct bfd_hash_entry * | |
4ce794b7 AM |
4269 | stub_hash_newfunc (struct bfd_hash_entry *entry, |
4270 | struct bfd_hash_table *table, | |
4271 | const char *string) | |
721956f4 AM |
4272 | { |
4273 | /* Allocate the structure if it has not already been allocated by a | |
4274 | subclass. */ | |
4275 | if (entry == NULL) | |
4276 | { | |
4277 | entry = bfd_hash_allocate (table, sizeof (struct ppc_stub_hash_entry)); | |
4278 | if (entry == NULL) | |
4279 | return entry; | |
4280 | } | |
4281 | ||
4282 | /* Call the allocation method of the superclass. */ | |
4283 | entry = bfd_hash_newfunc (entry, table, string); | |
4284 | if (entry != NULL) | |
4285 | { | |
4286 | struct ppc_stub_hash_entry *eh; | |
4287 | ||
4288 | /* Initialize the local fields. */ | |
4289 | eh = (struct ppc_stub_hash_entry *) entry; | |
ad8e1ba5 | 4290 | eh->stub_type = ppc_stub_none; |
6f20ed8a | 4291 | eh->group = NULL; |
721956f4 AM |
4292 | eh->stub_offset = 0; |
4293 | eh->target_value = 0; | |
4294 | eh->target_section = NULL; | |
721956f4 | 4295 | eh->h = NULL; |
6911b7dc | 4296 | eh->plt_ent = NULL; |
6911b7dc | 4297 | eh->other = 0; |
721956f4 AM |
4298 | } |
4299 | ||
4300 | return entry; | |
4301 | } | |
4302 | ||
4303 | /* Create an entry in the branch hash table. */ | |
4304 | ||
4305 | static struct bfd_hash_entry * | |
4ce794b7 AM |
4306 | branch_hash_newfunc (struct bfd_hash_entry *entry, |
4307 | struct bfd_hash_table *table, | |
4308 | const char *string) | |
721956f4 AM |
4309 | { |
4310 | /* Allocate the structure if it has not already been allocated by a | |
4311 | subclass. */ | |
4312 | if (entry == NULL) | |
4313 | { | |
4314 | entry = bfd_hash_allocate (table, sizeof (struct ppc_branch_hash_entry)); | |
4315 | if (entry == NULL) | |
4316 | return entry; | |
4317 | } | |
4318 | ||
4319 | /* Call the allocation method of the superclass. */ | |
4320 | entry = bfd_hash_newfunc (entry, table, string); | |
4321 | if (entry != NULL) | |
4322 | { | |
4323 | struct ppc_branch_hash_entry *eh; | |
4324 | ||
4325 | /* Initialize the local fields. */ | |
4326 | eh = (struct ppc_branch_hash_entry *) entry; | |
4327 | eh->offset = 0; | |
4328 | eh->iter = 0; | |
4329 | } | |
4330 | ||
4331 | return entry; | |
4332 | } | |
4333 | ||
65f38f15 AM |
4334 | /* Create an entry in a ppc64 ELF linker hash table. */ |
4335 | ||
4336 | static struct bfd_hash_entry * | |
4ce794b7 AM |
4337 | link_hash_newfunc (struct bfd_hash_entry *entry, |
4338 | struct bfd_hash_table *table, | |
4339 | const char *string) | |
65f38f15 AM |
4340 | { |
4341 | /* Allocate the structure if it has not already been allocated by a | |
4342 | subclass. */ | |
4343 | if (entry == NULL) | |
4344 | { | |
4345 | entry = bfd_hash_allocate (table, sizeof (struct ppc_link_hash_entry)); | |
4346 | if (entry == NULL) | |
4347 | return entry; | |
4348 | } | |
4349 | ||
4350 | /* Call the allocation method of the superclass. */ | |
4351 | entry = _bfd_elf_link_hash_newfunc (entry, table, string); | |
4352 | if (entry != NULL) | |
4353 | { | |
4354 | struct ppc_link_hash_entry *eh = (struct ppc_link_hash_entry *) entry; | |
4355 | ||
b3fac117 | 4356 | memset (&eh->u.stub_cache, 0, |
908b32fc | 4357 | (sizeof (struct ppc_link_hash_entry) |
b3fac117 AM |
4358 | - offsetof (struct ppc_link_hash_entry, u.stub_cache))); |
4359 | ||
4360 | /* When making function calls, old ABI code references function entry | |
4361 | points (dot symbols), while new ABI code references the function | |
4362 | descriptor symbol. We need to make any combination of reference and | |
4363 | definition work together, without breaking archive linking. | |
4364 | ||
4365 | For a defined function "foo" and an undefined call to "bar": | |
4366 | An old object defines "foo" and ".foo", references ".bar" (possibly | |
4367 | "bar" too). | |
4368 | A new object defines "foo" and references "bar". | |
4369 | ||
4370 | A new object thus has no problem with its undefined symbols being | |
4371 | satisfied by definitions in an old object. On the other hand, the | |
4372 | old object won't have ".bar" satisfied by a new object. | |
4373 | ||
4374 | Keep a list of newly added dot-symbols. */ | |
4375 | ||
4376 | if (string[0] == '.') | |
4377 | { | |
4378 | struct ppc_link_hash_table *htab; | |
4379 | ||
4380 | htab = (struct ppc_link_hash_table *) table; | |
4381 | eh->u.next_dot_sym = htab->dot_syms; | |
4382 | htab->dot_syms = eh; | |
4383 | } | |
65f38f15 AM |
4384 | } |
4385 | ||
4386 | return entry; | |
4387 | } | |
4388 | ||
3b421ab3 AM |
4389 | struct tocsave_entry { |
4390 | asection *sec; | |
4391 | bfd_vma offset; | |
4392 | }; | |
4393 | ||
4394 | static hashval_t | |
4395 | tocsave_htab_hash (const void *p) | |
4396 | { | |
4397 | const struct tocsave_entry *e = (const struct tocsave_entry *) p; | |
4aef7643 | 4398 | return ((bfd_vma) (intptr_t) e->sec ^ e->offset) >> 3; |
3b421ab3 AM |
4399 | } |
4400 | ||
4401 | static int | |
4402 | tocsave_htab_eq (const void *p1, const void *p2) | |
4403 | { | |
4404 | const struct tocsave_entry *e1 = (const struct tocsave_entry *) p1; | |
4405 | const struct tocsave_entry *e2 = (const struct tocsave_entry *) p2; | |
4406 | return e1->sec == e2->sec && e1->offset == e2->offset; | |
4407 | } | |
4408 | ||
68faa637 AM |
4409 | /* Destroy a ppc64 ELF linker hash table. */ |
4410 | ||
4411 | static void | |
d495ab0d | 4412 | ppc64_elf_link_hash_table_free (bfd *obfd) |
68faa637 | 4413 | { |
d495ab0d | 4414 | struct ppc_link_hash_table *htab; |
68faa637 | 4415 | |
d495ab0d | 4416 | htab = (struct ppc_link_hash_table *) obfd->link.hash; |
68faa637 AM |
4417 | if (htab->tocsave_htab) |
4418 | htab_delete (htab->tocsave_htab); | |
d495ab0d AM |
4419 | bfd_hash_table_free (&htab->branch_hash_table); |
4420 | bfd_hash_table_free (&htab->stub_hash_table); | |
4421 | _bfd_elf_link_hash_table_free (obfd); | |
68faa637 AM |
4422 | } |
4423 | ||
65f38f15 AM |
4424 | /* Create a ppc64 ELF linker hash table. */ |
4425 | ||
4426 | static struct bfd_link_hash_table * | |
4ce794b7 | 4427 | ppc64_elf_link_hash_table_create (bfd *abfd) |
65f38f15 AM |
4428 | { |
4429 | struct ppc_link_hash_table *htab; | |
4430 | bfd_size_type amt = sizeof (struct ppc_link_hash_table); | |
4431 | ||
4ce794b7 | 4432 | htab = bfd_zmalloc (amt); |
65f38f15 AM |
4433 | if (htab == NULL) |
4434 | return NULL; | |
4435 | ||
66eb6687 | 4436 | if (!_bfd_elf_link_hash_table_init (&htab->elf, abfd, link_hash_newfunc, |
4dfe6ac6 NC |
4437 | sizeof (struct ppc_link_hash_entry), |
4438 | PPC64_ELF_DATA)) | |
65f38f15 | 4439 | { |
e2d34d7d | 4440 | free (htab); |
65f38f15 AM |
4441 | return NULL; |
4442 | } | |
4443 | ||
721956f4 | 4444 | /* Init the stub hash table too. */ |
66eb6687 AM |
4445 | if (!bfd_hash_table_init (&htab->stub_hash_table, stub_hash_newfunc, |
4446 | sizeof (struct ppc_stub_hash_entry))) | |
2915c55b | 4447 | { |
d495ab0d | 4448 | _bfd_elf_link_hash_table_free (abfd); |
2915c55b JK |
4449 | return NULL; |
4450 | } | |
721956f4 AM |
4451 | |
4452 | /* And the branch hash table. */ | |
66eb6687 AM |
4453 | if (!bfd_hash_table_init (&htab->branch_hash_table, branch_hash_newfunc, |
4454 | sizeof (struct ppc_branch_hash_entry))) | |
2915c55b JK |
4455 | { |
4456 | bfd_hash_table_free (&htab->stub_hash_table); | |
d495ab0d | 4457 | _bfd_elf_link_hash_table_free (abfd); |
2915c55b JK |
4458 | return NULL; |
4459 | } | |
721956f4 | 4460 | |
3b421ab3 AM |
4461 | htab->tocsave_htab = htab_try_create (1024, |
4462 | tocsave_htab_hash, | |
4463 | tocsave_htab_eq, | |
4464 | NULL); | |
4465 | if (htab->tocsave_htab == NULL) | |
2915c55b | 4466 | { |
d495ab0d | 4467 | ppc64_elf_link_hash_table_free (abfd); |
2915c55b JK |
4468 | return NULL; |
4469 | } | |
d495ab0d | 4470 | htab->elf.root.hash_table_free = ppc64_elf_link_hash_table_free; |
3b421ab3 | 4471 | |
3254fd24 AM |
4472 | /* Initializing two fields of the union is just cosmetic. We really |
4473 | only care about glist, but when compiled on a 32-bit host the | |
4474 | bfd_vma fields are larger. Setting the bfd_vma to zero makes | |
4475 | debugger inspection of these fields look nicer. */ | |
a6aa5195 AM |
4476 | htab->elf.init_got_refcount.refcount = 0; |
4477 | htab->elf.init_got_refcount.glist = NULL; | |
4478 | htab->elf.init_plt_refcount.refcount = 0; | |
4479 | htab->elf.init_plt_refcount.glist = NULL; | |
4480 | htab->elf.init_got_offset.offset = 0; | |
4481 | htab->elf.init_got_offset.glist = NULL; | |
4482 | htab->elf.init_plt_offset.offset = 0; | |
4483 | htab->elf.init_plt_offset.glist = NULL; | |
3254fd24 | 4484 | |
65f38f15 AM |
4485 | return &htab->elf.root; |
4486 | } | |
4487 | ||
bfeb4a28 AM |
4488 | /* Create sections for linker generated code. */ |
4489 | ||
4490 | static bfd_boolean | |
4491 | create_linkage_sections (bfd *dynobj, struct bfd_link_info *info) | |
4492 | { | |
4493 | struct ppc_link_hash_table *htab; | |
4494 | flagword flags; | |
4495 | ||
4496 | htab = ppc_hash_table (info); | |
4497 | ||
bfeb4a28 AM |
4498 | flags = (SEC_ALLOC | SEC_LOAD | SEC_CODE | SEC_READONLY |
4499 | | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED); | |
b32547cd AM |
4500 | if (htab->params->save_restore_funcs) |
4501 | { | |
4502 | /* Create .sfpr for code to save and restore fp regs. */ | |
4503 | htab->sfpr = bfd_make_section_anyway_with_flags (dynobj, ".sfpr", | |
4504 | flags); | |
4505 | if (htab->sfpr == NULL | |
4506 | || ! bfd_set_section_alignment (dynobj, htab->sfpr, 2)) | |
4507 | return FALSE; | |
4508 | } | |
4509 | ||
4510 | if (bfd_link_relocatable (info)) | |
4511 | return TRUE; | |
bfeb4a28 AM |
4512 | |
4513 | /* Create .glink for lazy dynamic linking support. */ | |
4514 | htab->glink = bfd_make_section_anyway_with_flags (dynobj, ".glink", | |
4515 | flags); | |
4516 | if (htab->glink == NULL | |
4517 | || ! bfd_set_section_alignment (dynobj, htab->glink, 3)) | |
4518 | return FALSE; | |
4519 | ||
9e390558 AM |
4520 | /* The part of .glink used by global entry stubs, separate so that |
4521 | it can be aligned appropriately without affecting htab->glink. */ | |
4522 | htab->global_entry = bfd_make_section_anyway_with_flags (dynobj, ".glink", | |
4523 | flags); | |
4524 | if (htab->global_entry == NULL | |
4525 | || ! bfd_set_section_alignment (dynobj, htab->global_entry, 2)) | |
4526 | return FALSE; | |
4527 | ||
bfeb4a28 AM |
4528 | if (!info->no_ld_generated_unwind_info) |
4529 | { | |
4530 | flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_HAS_CONTENTS | |
4531 | | SEC_IN_MEMORY | SEC_LINKER_CREATED); | |
4532 | htab->glink_eh_frame = bfd_make_section_anyway_with_flags (dynobj, | |
4533 | ".eh_frame", | |
4534 | flags); | |
4535 | if (htab->glink_eh_frame == NULL | |
4536 | || !bfd_set_section_alignment (dynobj, htab->glink_eh_frame, 2)) | |
4537 | return FALSE; | |
4538 | } | |
4539 | ||
4540 | flags = SEC_ALLOC | SEC_LINKER_CREATED; | |
33e44f2e AM |
4541 | htab->elf.iplt = bfd_make_section_anyway_with_flags (dynobj, ".iplt", flags); |
4542 | if (htab->elf.iplt == NULL | |
4543 | || ! bfd_set_section_alignment (dynobj, htab->elf.iplt, 3)) | |
bfeb4a28 AM |
4544 | return FALSE; |
4545 | ||
4546 | flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY | |
4547 | | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED); | |
33e44f2e AM |
4548 | htab->elf.irelplt |
4549 | = bfd_make_section_anyway_with_flags (dynobj, ".rela.iplt", flags); | |
4550 | if (htab->elf.irelplt == NULL | |
4551 | || ! bfd_set_section_alignment (dynobj, htab->elf.irelplt, 3)) | |
bfeb4a28 AM |
4552 | return FALSE; |
4553 | ||
4554 | /* Create branch lookup table for plt_branch stubs. */ | |
4555 | flags = (SEC_ALLOC | SEC_LOAD | |
4556 | | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED); | |
4557 | htab->brlt = bfd_make_section_anyway_with_flags (dynobj, ".branch_lt", | |
4558 | flags); | |
4559 | if (htab->brlt == NULL | |
4560 | || ! bfd_set_section_alignment (dynobj, htab->brlt, 3)) | |
4561 | return FALSE; | |
4562 | ||
2d7ad24e AM |
4563 | /* Local plt entries, put in .branch_lt but a separate section for |
4564 | convenience. */ | |
4565 | htab->pltlocal = bfd_make_section_anyway_with_flags (dynobj, ".branch_lt", | |
4566 | flags); | |
4567 | if (htab->pltlocal == NULL | |
4568 | || ! bfd_set_section_alignment (dynobj, htab->pltlocal, 3)) | |
4569 | return FALSE; | |
4570 | ||
0e1862bb | 4571 | if (!bfd_link_pic (info)) |
bfeb4a28 AM |
4572 | return TRUE; |
4573 | ||
4574 | flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY | |
4575 | | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED); | |
2d7ad24e AM |
4576 | htab->relbrlt |
4577 | = bfd_make_section_anyway_with_flags (dynobj, ".rela.branch_lt", flags); | |
bfeb4a28 AM |
4578 | if (htab->relbrlt == NULL |
4579 | || ! bfd_set_section_alignment (dynobj, htab->relbrlt, 3)) | |
4580 | return FALSE; | |
4581 | ||
2d7ad24e AM |
4582 | htab->relpltlocal |
4583 | = bfd_make_section_anyway_with_flags (dynobj, ".rela.branch_lt", flags); | |
4584 | if (htab->relpltlocal == NULL | |
4585 | || ! bfd_set_section_alignment (dynobj, htab->relpltlocal, 3)) | |
4586 | return FALSE; | |
4587 | ||
bfeb4a28 AM |
4588 | return TRUE; |
4589 | } | |
4590 | ||
e717da7e AM |
4591 | /* Satisfy the ELF linker by filling in some fields in our fake bfd. */ |
4592 | ||
bfeb4a28 | 4593 | bfd_boolean |
e7d1c40c AM |
4594 | ppc64_elf_init_stub_bfd (struct bfd_link_info *info, |
4595 | struct ppc64_elf_params *params) | |
e717da7e AM |
4596 | { |
4597 | struct ppc_link_hash_table *htab; | |
4598 | ||
e7d1c40c | 4599 | elf_elfheader (params->stub_bfd)->e_ident[EI_CLASS] = ELFCLASS64; |
e717da7e AM |
4600 | |
4601 | /* Always hook our dynamic sections into the first bfd, which is the | |
4602 | linker created stub bfd. This ensures that the GOT header is at | |
4603 | the start of the output TOC section. */ | |
4604 | htab = ppc_hash_table (info); | |
e7d1c40c AM |
4605 | htab->elf.dynobj = params->stub_bfd; |
4606 | htab->params = params; | |
bfeb4a28 | 4607 | |
bfeb4a28 | 4608 | return create_linkage_sections (htab->elf.dynobj, info); |
e717da7e AM |
4609 | } |
4610 | ||
721956f4 AM |
4611 | /* Build a name for an entry in the stub hash table. */ |
4612 | ||
4613 | static char * | |
4ce794b7 AM |
4614 | ppc_stub_name (const asection *input_section, |
4615 | const asection *sym_sec, | |
4616 | const struct ppc_link_hash_entry *h, | |
4617 | const Elf_Internal_Rela *rel) | |
721956f4 AM |
4618 | { |
4619 | char *stub_name; | |
bcaa2f82 | 4620 | ssize_t len; |
721956f4 AM |
4621 | |
4622 | /* rel->r_addend is actually 64 bit, but who uses more than +/- 2^31 | |
4623 | offsets from a sym as a branch target? In fact, we could | |
4624 | probably assume the addend is always zero. */ | |
4625 | BFD_ASSERT (((int) rel->r_addend & 0xffffffff) == rel->r_addend); | |
4626 | ||
4627 | if (h) | |
4628 | { | |
4629 | len = 8 + 1 + strlen (h->elf.root.root.string) + 1 + 8 + 1; | |
4630 | stub_name = bfd_malloc (len); | |
46de2a7c AM |
4631 | if (stub_name == NULL) |
4632 | return stub_name; | |
4633 | ||
bcaa2f82 AM |
4634 | len = sprintf (stub_name, "%08x.%s+%x", |
4635 | input_section->id & 0xffffffff, | |
4636 | h->elf.root.root.string, | |
4637 | (int) rel->r_addend & 0xffffffff); | |
721956f4 AM |
4638 | } |
4639 | else | |
4640 | { | |
ad8e1ba5 | 4641 | len = 8 + 1 + 8 + 1 + 8 + 1 + 8 + 1; |
721956f4 | 4642 | stub_name = bfd_malloc (len); |
46de2a7c AM |
4643 | if (stub_name == NULL) |
4644 | return stub_name; | |
4645 | ||
bcaa2f82 AM |
4646 | len = sprintf (stub_name, "%08x.%x:%x+%x", |
4647 | input_section->id & 0xffffffff, | |
4648 | sym_sec->id & 0xffffffff, | |
4649 | (int) ELF64_R_SYM (rel->r_info) & 0xffffffff, | |
4650 | (int) rel->r_addend & 0xffffffff); | |
721956f4 | 4651 | } |
bcaa2f82 | 4652 | if (len > 2 && stub_name[len - 2] == '+' && stub_name[len - 1] == '0') |
ee75fd95 | 4653 | stub_name[len - 2] = 0; |
721956f4 AM |
4654 | return stub_name; |
4655 | } | |
4656 | ||
4657 | /* Look up an entry in the stub hash. Stub entries are cached because | |
4658 | creating the stub name takes a bit of time. */ | |
4659 | ||
4660 | static struct ppc_stub_hash_entry * | |
4ce794b7 AM |
4661 | ppc_get_stub_entry (const asection *input_section, |
4662 | const asection *sym_sec, | |
039b3fef | 4663 | struct ppc_link_hash_entry *h, |
4ce794b7 AM |
4664 | const Elf_Internal_Rela *rel, |
4665 | struct ppc_link_hash_table *htab) | |
721956f4 AM |
4666 | { |
4667 | struct ppc_stub_hash_entry *stub_entry; | |
6f20ed8a | 4668 | struct map_stub *group; |
721956f4 AM |
4669 | |
4670 | /* If this input section is part of a group of sections sharing one | |
4671 | stub section, then use the id of the first section in the group. | |
4672 | Stub names need to include a section id, as there may well be | |
4673 | more than one stub used to reach say, printf, and we need to | |
4674 | distinguish between them. */ | |
6f20ed8a | 4675 | group = htab->sec_info[input_section->id].u.group; |
89d77b8a AM |
4676 | if (group == NULL) |
4677 | return NULL; | |
721956f4 | 4678 | |
b3fac117 AM |
4679 | if (h != NULL && h->u.stub_cache != NULL |
4680 | && h->u.stub_cache->h == h | |
6f20ed8a | 4681 | && h->u.stub_cache->group == group) |
721956f4 | 4682 | { |
b3fac117 | 4683 | stub_entry = h->u.stub_cache; |
721956f4 AM |
4684 | } |
4685 | else | |
4686 | { | |
4687 | char *stub_name; | |
4688 | ||
6f20ed8a | 4689 | stub_name = ppc_stub_name (group->link_sec, sym_sec, h, rel); |
721956f4 AM |
4690 | if (stub_name == NULL) |
4691 | return NULL; | |
4692 | ||
4693 | stub_entry = ppc_stub_hash_lookup (&htab->stub_hash_table, | |
b34976b6 | 4694 | stub_name, FALSE, FALSE); |
721956f4 | 4695 | if (h != NULL) |
b3fac117 | 4696 | h->u.stub_cache = stub_entry; |
721956f4 AM |
4697 | |
4698 | free (stub_name); | |
4699 | } | |
4700 | ||
4701 | return stub_entry; | |
4702 | } | |
4703 | ||
4704 | /* Add a new stub entry to the stub hash. Not all fields of the new | |
4705 | stub entry are initialised. */ | |
4706 | ||
4707 | static struct ppc_stub_hash_entry * | |
4ce794b7 AM |
4708 | ppc_add_stub (const char *stub_name, |
4709 | asection *section, | |
25f53a85 | 4710 | struct bfd_link_info *info) |
721956f4 | 4711 | { |
25f53a85 | 4712 | struct ppc_link_hash_table *htab = ppc_hash_table (info); |
6f20ed8a | 4713 | struct map_stub *group; |
721956f4 AM |
4714 | asection *link_sec; |
4715 | asection *stub_sec; | |
4716 | struct ppc_stub_hash_entry *stub_entry; | |
4717 | ||
6f20ed8a AM |
4718 | group = htab->sec_info[section->id].u.group; |
4719 | link_sec = group->link_sec; | |
4720 | stub_sec = group->stub_sec; | |
721956f4 AM |
4721 | if (stub_sec == NULL) |
4722 | { | |
6f20ed8a AM |
4723 | size_t namelen; |
4724 | bfd_size_type len; | |
4725 | char *s_name; | |
721956f4 | 4726 | |
6f20ed8a AM |
4727 | namelen = strlen (link_sec->name); |
4728 | len = namelen + sizeof (STUB_SUFFIX); | |
4729 | s_name = bfd_alloc (htab->params->stub_bfd, len); | |
4730 | if (s_name == NULL) | |
4731 | return NULL; | |
721956f4 | 4732 | |
6f20ed8a AM |
4733 | memcpy (s_name, link_sec->name, namelen); |
4734 | memcpy (s_name + namelen, STUB_SUFFIX, sizeof (STUB_SUFFIX)); | |
4735 | stub_sec = (*htab->params->add_stub_section) (s_name, link_sec); | |
4736 | if (stub_sec == NULL) | |
4737 | return NULL; | |
4738 | group->stub_sec = stub_sec; | |
721956f4 AM |
4739 | } |
4740 | ||
4741 | /* Enter this entry into the linker stub hash table. */ | |
4742 | stub_entry = ppc_stub_hash_lookup (&htab->stub_hash_table, stub_name, | |
b34976b6 | 4743 | TRUE, FALSE); |
721956f4 AM |
4744 | if (stub_entry == NULL) |
4745 | { | |
695344c0 | 4746 | /* xgettext:c-format */ |
cf97bcb0 AM |
4747 | _bfd_error_handler (_("%pB: cannot create stub entry %s"), |
4748 | section->owner, stub_name); | |
721956f4 AM |
4749 | return NULL; |
4750 | } | |
4751 | ||
6f20ed8a | 4752 | stub_entry->group = group; |
721956f4 | 4753 | stub_entry->stub_offset = 0; |
721956f4 AM |
4754 | return stub_entry; |
4755 | } | |
4756 | ||
e717da7e AM |
4757 | /* Create .got and .rela.got sections in ABFD, and .got in dynobj if |
4758 | not already done. */ | |
65f38f15 | 4759 | |
b34976b6 | 4760 | static bfd_boolean |
e717da7e | 4761 | create_got_section (bfd *abfd, struct bfd_link_info *info) |
65f38f15 | 4762 | { |
e717da7e AM |
4763 | asection *got, *relgot; |
4764 | flagword flags; | |
4765 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
65f38f15 | 4766 | |
0c8d6e5c | 4767 | if (!is_ppc64_elf (abfd)) |
0ffa91dd | 4768 | return FALSE; |
4dfe6ac6 NC |
4769 | if (htab == NULL) |
4770 | return FALSE; | |
0ffa91dd | 4771 | |
33e44f2e AM |
4772 | if (!htab->elf.sgot |
4773 | && !_bfd_elf_create_got_section (htab->elf.dynobj, info)) | |
4774 | return FALSE; | |
e717da7e AM |
4775 | |
4776 | flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY | |
4777 | | SEC_LINKER_CREATED); | |
4778 | ||
c456f082 | 4779 | got = bfd_make_section_anyway_with_flags (abfd, ".got", flags); |
e717da7e | 4780 | if (!got |
e717da7e AM |
4781 | || !bfd_set_section_alignment (abfd, got, 3)) |
4782 | return FALSE; | |
65f38f15 | 4783 | |
c456f082 AM |
4784 | relgot = bfd_make_section_anyway_with_flags (abfd, ".rela.got", |
4785 | flags | SEC_READONLY); | |
e717da7e | 4786 | if (!relgot |
e717da7e | 4787 | || ! bfd_set_section_alignment (abfd, relgot, 3)) |
b34976b6 | 4788 | return FALSE; |
e717da7e AM |
4789 | |
4790 | ppc64_elf_tdata (abfd)->got = got; | |
4791 | ppc64_elf_tdata (abfd)->relgot = relgot; | |
b34976b6 | 4792 | return TRUE; |
65f38f15 | 4793 | } |
5bd4f169 | 4794 | |
b31867b6 AM |
4795 | /* Follow indirect and warning symbol links. */ |
4796 | ||
4797 | static inline struct bfd_link_hash_entry * | |
4798 | follow_link (struct bfd_link_hash_entry *h) | |
4799 | { | |
4800 | while (h->type == bfd_link_hash_indirect | |
4801 | || h->type == bfd_link_hash_warning) | |
4802 | h = h->u.i.link; | |
4803 | return h; | |
4804 | } | |
4805 | ||
4806 | static inline struct elf_link_hash_entry * | |
4807 | elf_follow_link (struct elf_link_hash_entry *h) | |
4808 | { | |
4809 | return (struct elf_link_hash_entry *) follow_link (&h->root); | |
4810 | } | |
4811 | ||
4812 | static inline struct ppc_link_hash_entry * | |
4813 | ppc_follow_link (struct ppc_link_hash_entry *h) | |
4814 | { | |
4815 | return (struct ppc_link_hash_entry *) follow_link (&h->elf.root); | |
4816 | } | |
4817 | ||
40d16e0b AM |
4818 | /* Merge PLT info on FROM with that on TO. */ |
4819 | ||
4820 | static void | |
4821 | move_plt_plist (struct ppc_link_hash_entry *from, | |
4822 | struct ppc_link_hash_entry *to) | |
4823 | { | |
4824 | if (from->elf.plt.plist != NULL) | |
4825 | { | |
4826 | if (to->elf.plt.plist != NULL) | |
4827 | { | |
4828 | struct plt_entry **entp; | |
4829 | struct plt_entry *ent; | |
4830 | ||
4831 | for (entp = &from->elf.plt.plist; (ent = *entp) != NULL; ) | |
4832 | { | |
4833 | struct plt_entry *dent; | |
4834 | ||
4835 | for (dent = to->elf.plt.plist; dent != NULL; dent = dent->next) | |
4836 | if (dent->addend == ent->addend) | |
4837 | { | |
4838 | dent->plt.refcount += ent->plt.refcount; | |
4839 | *entp = ent->next; | |
4840 | break; | |
4841 | } | |
4842 | if (dent == NULL) | |
4843 | entp = &ent->next; | |
4844 | } | |
4845 | *entp = to->elf.plt.plist; | |
4846 | } | |
4847 | ||
4848 | to->elf.plt.plist = from->elf.plt.plist; | |
4849 | from->elf.plt.plist = NULL; | |
4850 | } | |
4851 | } | |
4852 | ||
65f38f15 AM |
4853 | /* Copy the extra info we tack onto an elf_link_hash_entry. */ |
4854 | ||
4855 | static void | |
fcfa13d2 AM |
4856 | ppc64_elf_copy_indirect_symbol (struct bfd_link_info *info, |
4857 | struct elf_link_hash_entry *dir, | |
4858 | struct elf_link_hash_entry *ind) | |
65f38f15 AM |
4859 | { |
4860 | struct ppc_link_hash_entry *edir, *eind; | |
4861 | ||
4862 | edir = (struct ppc_link_hash_entry *) dir; | |
4863 | eind = (struct ppc_link_hash_entry *) ind; | |
4864 | ||
c79d6685 AM |
4865 | edir->is_func |= eind->is_func; |
4866 | edir->is_func_descriptor |= eind->is_func_descriptor; | |
4867 | edir->tls_mask |= eind->tls_mask; | |
4868 | if (eind->oh != NULL) | |
4869 | edir->oh = ppc_follow_link (eind->oh); | |
4870 | ||
474436e6 | 4871 | if (edir->elf.versioned != versioned_hidden) |
e81830c5 AM |
4872 | edir->elf.ref_dynamic |= eind->elf.ref_dynamic; |
4873 | edir->elf.ref_regular |= eind->elf.ref_regular; | |
4874 | edir->elf.ref_regular_nonweak |= eind->elf.ref_regular_nonweak; | |
4a7e5234 | 4875 | edir->elf.non_got_ref |= eind->elf.non_got_ref; |
e81830c5 AM |
4876 | edir->elf.needs_plt |= eind->elf.needs_plt; |
4877 | edir->elf.pointer_equality_needed |= eind->elf.pointer_equality_needed; | |
c79d6685 | 4878 | |
d311bc8b AM |
4879 | /* If we were called to copy over info for a weak sym, don't copy |
4880 | dyn_relocs, plt/got info, or dynindx. We used to copy dyn_relocs | |
4881 | in order to simplify readonly_dynrelocs and save a field in the | |
4882 | symbol hash entry, but that means dyn_relocs can't be used in any | |
4883 | tests about a specific symbol, or affect other symbol flags which | |
ab2477e1 | 4884 | are then tested. */ |
d311bc8b | 4885 | if (eind->elf.root.type != bfd_link_hash_indirect) |
ab2477e1 | 4886 | return; |
d311bc8b | 4887 | |
411e1bfb | 4888 | /* Copy over any dynamic relocs we may have on the indirect sym. */ |
bbd7ec4a | 4889 | if (eind->dyn_relocs != NULL) |
65f38f15 | 4890 | { |
bbd7ec4a AM |
4891 | if (edir->dyn_relocs != NULL) |
4892 | { | |
6061a67d AM |
4893 | struct elf_dyn_relocs **pp; |
4894 | struct elf_dyn_relocs *p; | |
bbd7ec4a | 4895 | |
fcfa13d2 | 4896 | /* Add reloc counts against the indirect sym to the direct sym |
bbd7ec4a AM |
4897 | list. Merge any entries against the same section. */ |
4898 | for (pp = &eind->dyn_relocs; (p = *pp) != NULL; ) | |
4899 | { | |
6061a67d | 4900 | struct elf_dyn_relocs *q; |
bbd7ec4a AM |
4901 | |
4902 | for (q = edir->dyn_relocs; q != NULL; q = q->next) | |
4903 | if (q->sec == p->sec) | |
4904 | { | |
4905 | q->pc_count += p->pc_count; | |
4906 | q->count += p->count; | |
4907 | *pp = p->next; | |
4908 | break; | |
4909 | } | |
4910 | if (q == NULL) | |
4911 | pp = &p->next; | |
4912 | } | |
4913 | *pp = edir->dyn_relocs; | |
4914 | } | |
4915 | ||
65f38f15 AM |
4916 | edir->dyn_relocs = eind->dyn_relocs; |
4917 | eind->dyn_relocs = NULL; | |
4918 | } | |
65f38f15 | 4919 | |
81848ca0 AM |
4920 | /* Copy over got entries that we may have already seen to the |
4921 | symbol which just became indirect. */ | |
411e1bfb AM |
4922 | if (eind->elf.got.glist != NULL) |
4923 | { | |
4924 | if (edir->elf.got.glist != NULL) | |
4925 | { | |
4926 | struct got_entry **entp; | |
4927 | struct got_entry *ent; | |
4928 | ||
4929 | for (entp = &eind->elf.got.glist; (ent = *entp) != NULL; ) | |
4930 | { | |
4931 | struct got_entry *dent; | |
4932 | ||
4933 | for (dent = edir->elf.got.glist; dent != NULL; dent = dent->next) | |
4934 | if (dent->addend == ent->addend | |
e717da7e | 4935 | && dent->owner == ent->owner |
411e1bfb AM |
4936 | && dent->tls_type == ent->tls_type) |
4937 | { | |
4938 | dent->got.refcount += ent->got.refcount; | |
4939 | *entp = ent->next; | |
4940 | break; | |
4941 | } | |
4942 | if (dent == NULL) | |
4943 | entp = &ent->next; | |
4944 | } | |
4945 | *entp = edir->elf.got.glist; | |
4946 | } | |
4947 | ||
4948 | edir->elf.got.glist = eind->elf.got.glist; | |
4949 | eind->elf.got.glist = NULL; | |
4950 | } | |
4951 | ||
4952 | /* And plt entries. */ | |
40d16e0b | 4953 | move_plt_plist (eind, edir); |
411e1bfb | 4954 | |
fcfa13d2 | 4955 | if (eind->elf.dynindx != -1) |
411e1bfb | 4956 | { |
fcfa13d2 AM |
4957 | if (edir->elf.dynindx != -1) |
4958 | _bfd_elf_strtab_delref (elf_hash_table (info)->dynstr, | |
4959 | edir->elf.dynstr_index); | |
411e1bfb AM |
4960 | edir->elf.dynindx = eind->elf.dynindx; |
4961 | edir->elf.dynstr_index = eind->elf.dynstr_index; | |
4962 | eind->elf.dynindx = -1; | |
4963 | eind->elf.dynstr_index = 0; | |
4964 | } | |
411e1bfb AM |
4965 | } |
4966 | ||
8387904d AM |
4967 | /* Find the function descriptor hash entry from the given function code |
4968 | hash entry FH. Link the entries via their OH fields. */ | |
4969 | ||
4970 | static struct ppc_link_hash_entry * | |
b31867b6 | 4971 | lookup_fdh (struct ppc_link_hash_entry *fh, struct ppc_link_hash_table *htab) |
8387904d AM |
4972 | { |
4973 | struct ppc_link_hash_entry *fdh = fh->oh; | |
4974 | ||
4975 | if (fdh == NULL) | |
4976 | { | |
4977 | const char *fd_name = fh->elf.root.root.string + 1; | |
4978 | ||
4979 | fdh = (struct ppc_link_hash_entry *) | |
4980 | elf_link_hash_lookup (&htab->elf, fd_name, FALSE, FALSE, FALSE); | |
b31867b6 AM |
4981 | if (fdh == NULL) |
4982 | return fdh; | |
4983 | ||
4984 | fdh->is_func_descriptor = 1; | |
4985 | fdh->oh = fh; | |
4986 | fh->is_func = 1; | |
4987 | fh->oh = fdh; | |
8387904d AM |
4988 | } |
4989 | ||
8c5b4e52 AM |
4990 | fdh = ppc_follow_link (fdh); |
4991 | fdh->is_func_descriptor = 1; | |
4992 | fdh->oh = fh; | |
4993 | return fdh; | |
8387904d AM |
4994 | } |
4995 | ||
8c5b4e52 | 4996 | /* Make a fake function descriptor sym for the undefined code sym FH. */ |
bb700d78 AM |
4997 | |
4998 | static struct ppc_link_hash_entry * | |
4999 | make_fdh (struct bfd_link_info *info, | |
908b32fc | 5000 | struct ppc_link_hash_entry *fh) |
bb700d78 | 5001 | { |
8c5b4e52 AM |
5002 | bfd *abfd = fh->elf.root.u.undef.abfd; |
5003 | struct bfd_link_hash_entry *bh = NULL; | |
bb700d78 | 5004 | struct ppc_link_hash_entry *fdh; |
8c5b4e52 AM |
5005 | flagword flags = (fh->elf.root.type == bfd_link_hash_undefweak |
5006 | ? BSF_WEAK | |
5007 | : BSF_GLOBAL); | |
5008 | ||
5009 | if (!_bfd_generic_link_add_one_symbol (info, abfd, | |
5010 | fh->elf.root.root.string + 1, | |
5011 | flags, bfd_und_section_ptr, 0, | |
5012 | NULL, FALSE, FALSE, &bh)) | |
bb700d78 AM |
5013 | return NULL; |
5014 | ||
5015 | fdh = (struct ppc_link_hash_entry *) bh; | |
5016 | fdh->elf.non_elf = 0; | |
908b32fc AM |
5017 | fdh->fake = 1; |
5018 | fdh->is_func_descriptor = 1; | |
5019 | fdh->oh = fh; | |
5020 | fh->is_func = 1; | |
5021 | fh->oh = fdh; | |
bb700d78 AM |
5022 | return fdh; |
5023 | } | |
5024 | ||
8387904d AM |
5025 | /* Fix function descriptor symbols defined in .opd sections to be |
5026 | function type. */ | |
555cd476 AM |
5027 | |
5028 | static bfd_boolean | |
c16153ae | 5029 | ppc64_elf_add_symbol_hook (bfd *ibfd, |
e054468f | 5030 | struct bfd_link_info *info, |
555cd476 | 5031 | Elf_Internal_Sym *isym, |
6911b7dc | 5032 | const char **name, |
555cd476 AM |
5033 | flagword *flags ATTRIBUTE_UNUSED, |
5034 | asection **sec, | |
b53dfeb2 | 5035 | bfd_vma *value) |
555cd476 | 5036 | { |
a43942db | 5037 | if (ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC |
f1885d1e AM |
5038 | && (ibfd->flags & DYNAMIC) == 0 |
5039 | && bfd_get_flavour (info->output_bfd) == bfd_target_elf_flavour) | |
a43942db | 5040 | elf_tdata (info->output_bfd)->has_gnu_symbols |= elf_gnu_symbol_ifunc; |
f64b2e8d | 5041 | |
b53dfeb2 | 5042 | if (*sec != NULL |
f1885d1e | 5043 | && strcmp ((*sec)->name, ".opd") == 0) |
b53dfeb2 AM |
5044 | { |
5045 | asection *code_sec; | |
5046 | ||
5047 | if (!(ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC | |
5048 | || ELF_ST_TYPE (isym->st_info) == STT_FUNC)) | |
5049 | isym->st_info = ELF_ST_INFO (ELF_ST_BIND (isym->st_info), STT_FUNC); | |
5050 | ||
5051 | /* If the symbol is a function defined in .opd, and the function | |
5052 | code is in a discarded group, let it appear to be undefined. */ | |
0e1862bb | 5053 | if (!bfd_link_relocatable (info) |
b53dfeb2 AM |
5054 | && (*sec)->reloc_count != 0 |
5055 | && opd_entry_value (*sec, *value, &code_sec, NULL, | |
5056 | FALSE) != (bfd_vma) -1 | |
5057 | && discarded_section (code_sec)) | |
5058 | { | |
5059 | *sec = bfd_und_section_ptr; | |
5060 | isym->st_shndx = SHN_UNDEF; | |
5061 | } | |
5062 | } | |
dbd1e97e AM |
5063 | else if (*sec != NULL |
5064 | && strcmp ((*sec)->name, ".toc") == 0 | |
5065 | && ELF_ST_TYPE (isym->st_info) == STT_OBJECT) | |
5066 | { | |
5067 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
5068 | if (htab != NULL) | |
5069 | htab->params->object_in_toc = 1; | |
5070 | } | |
433817dd | 5071 | |
6911b7dc AM |
5072 | if ((STO_PPC64_LOCAL_MASK & isym->st_other) != 0) |
5073 | { | |
5074 | if (abiversion (ibfd) == 0) | |
5075 | set_abiversion (ibfd, 2); | |
5076 | else if (abiversion (ibfd) == 1) | |
5077 | { | |
cf97bcb0 AM |
5078 | _bfd_error_handler (_("symbol '%s' has invalid st_other" |
5079 | " for ABI version 1"), *name); | |
6911b7dc AM |
5080 | bfd_set_error (bfd_error_bad_value); |
5081 | return FALSE; | |
5082 | } | |
5083 | } | |
5084 | ||
555cd476 AM |
5085 | return TRUE; |
5086 | } | |
5087 | ||
6911b7dc AM |
5088 | /* Merge non-visibility st_other attributes: local entry point. */ |
5089 | ||
5090 | static void | |
5091 | ppc64_elf_merge_symbol_attribute (struct elf_link_hash_entry *h, | |
5092 | const Elf_Internal_Sym *isym, | |
5093 | bfd_boolean definition, | |
5094 | bfd_boolean dynamic) | |
5095 | { | |
f378ab09 | 5096 | if (definition && (!dynamic || !h->def_regular)) |
6911b7dc AM |
5097 | h->other = ((isym->st_other & ~ELF_ST_VISIBILITY (-1)) |
5098 | | ELF_ST_VISIBILITY (h->other)); | |
5099 | } | |
5100 | ||
8c5b4e52 AM |
5101 | /* Hook called on merging a symbol. We use this to clear "fake" since |
5102 | we now have a real symbol. */ | |
5103 | ||
5104 | static bfd_boolean | |
5105 | ppc64_elf_merge_symbol (struct elf_link_hash_entry *h, | |
8b5f1ed8 | 5106 | const Elf_Internal_Sym *isym, |
8c5b4e52 AM |
5107 | asection **psec ATTRIBUTE_UNUSED, |
5108 | bfd_boolean newdef ATTRIBUTE_UNUSED, | |
5109 | bfd_boolean olddef ATTRIBUTE_UNUSED, | |
5110 | bfd *oldbfd ATTRIBUTE_UNUSED, | |
5111 | const asection *oldsec ATTRIBUTE_UNUSED) | |
5112 | { | |
5113 | ((struct ppc_link_hash_entry *) h)->fake = 0; | |
8b5f1ed8 AM |
5114 | if ((STO_PPC64_LOCAL_MASK & isym->st_other) != 0) |
5115 | ((struct ppc_link_hash_entry *) h)->non_zero_localentry = 1; | |
8c5b4e52 AM |
5116 | return TRUE; |
5117 | } | |
5118 | ||
8387904d | 5119 | /* This function makes an old ABI object reference to ".bar" cause the |
908b32fc AM |
5120 | inclusion of a new ABI object archive that defines "bar". |
5121 | NAME is a symbol defined in an archive. Return a symbol in the hash | |
5122 | table that might be satisfied by the archive symbols. */ | |
8387904d AM |
5123 | |
5124 | static struct elf_link_hash_entry * | |
5125 | ppc64_elf_archive_symbol_lookup (bfd *abfd, | |
5126 | struct bfd_link_info *info, | |
5127 | const char *name) | |
5128 | { | |
5129 | struct elf_link_hash_entry *h; | |
5130 | char *dot_name; | |
5131 | size_t len; | |
5132 | ||
5133 | h = _bfd_elf_archive_symbol_lookup (abfd, info, name); | |
908b32fc AM |
5134 | if (h != NULL |
5135 | /* Don't return this sym if it is a fake function descriptor | |
5136 | created by add_symbol_adjust. */ | |
8c5b4e52 | 5137 | && !((struct ppc_link_hash_entry *) h)->fake) |
8387904d AM |
5138 | return h; |
5139 | ||
5140 | if (name[0] == '.') | |
5141 | return h; | |
5142 | ||
5143 | len = strlen (name); | |
5144 | dot_name = bfd_alloc (abfd, len + 2); | |
5145 | if (dot_name == NULL) | |
e99955cd | 5146 | return (struct elf_link_hash_entry *) -1; |
8387904d AM |
5147 | dot_name[0] = '.'; |
5148 | memcpy (dot_name + 1, name, len + 1); | |
5149 | h = _bfd_elf_archive_symbol_lookup (abfd, info, dot_name); | |
5150 | bfd_release (abfd, dot_name); | |
5151 | return h; | |
5152 | } | |
5153 | ||
5154 | /* This function satisfies all old ABI object references to ".bar" if a | |
99877b66 AM |
5155 | new ABI object defines "bar". Well, at least, undefined dot symbols |
5156 | are made weak. This stops later archive searches from including an | |
5157 | object if we already have a function descriptor definition. It also | |
35b0ce59 AM |
5158 | prevents the linker complaining about undefined symbols. |
5159 | We also check and correct mismatched symbol visibility here. The | |
5160 | most restrictive visibility of the function descriptor and the | |
5161 | function entry symbol is used. */ | |
8387904d AM |
5162 | |
5163 | static bfd_boolean | |
b3fac117 | 5164 | add_symbol_adjust (struct ppc_link_hash_entry *eh, struct bfd_link_info *info) |
8387904d | 5165 | { |
8387904d AM |
5166 | struct ppc_link_hash_table *htab; |
5167 | struct ppc_link_hash_entry *fdh; | |
5168 | ||
b3fac117 AM |
5169 | if (eh->elf.root.type == bfd_link_hash_warning) |
5170 | eh = (struct ppc_link_hash_entry *) eh->elf.root.u.i.link; | |
8387904d | 5171 | |
8400d40d AM |
5172 | if (eh->elf.root.type == bfd_link_hash_indirect) |
5173 | return TRUE; | |
5174 | ||
b3fac117 AM |
5175 | if (eh->elf.root.root.string[0] != '.') |
5176 | abort (); | |
8387904d | 5177 | |
b3fac117 | 5178 | htab = ppc_hash_table (info); |
4dfe6ac6 NC |
5179 | if (htab == NULL) |
5180 | return FALSE; | |
5181 | ||
b31867b6 | 5182 | fdh = lookup_fdh (eh, htab); |
8c5b4e52 AM |
5183 | if (fdh == NULL |
5184 | && !bfd_link_relocatable (info) | |
5185 | && (eh->elf.root.type == bfd_link_hash_undefined | |
5186 | || eh->elf.root.type == bfd_link_hash_undefweak) | |
5187 | && eh->elf.ref_regular) | |
5188 | { | |
5189 | /* Make an undefined function descriptor sym, in order to | |
5190 | pull in an --as-needed shared lib. Archives are handled | |
5191 | elsewhere. */ | |
5192 | fdh = make_fdh (info, eh); | |
5193 | if (fdh == NULL) | |
5194 | return FALSE; | |
bb700d78 | 5195 | } |
8c5b4e52 AM |
5196 | |
5197 | if (fdh != NULL) | |
8387904d | 5198 | { |
35b0ce59 AM |
5199 | unsigned entry_vis = ELF_ST_VISIBILITY (eh->elf.other) - 1; |
5200 | unsigned descr_vis = ELF_ST_VISIBILITY (fdh->elf.other) - 1; | |
8c5b4e52 AM |
5201 | |
5202 | /* Make both descriptor and entry symbol have the most | |
5203 | constraining visibility of either symbol. */ | |
35b0ce59 AM |
5204 | if (entry_vis < descr_vis) |
5205 | fdh->elf.other += entry_vis - descr_vis; | |
5206 | else if (entry_vis > descr_vis) | |
5207 | eh->elf.other += descr_vis - entry_vis; | |
5208 | ||
8c5b4e52 AM |
5209 | /* Propagate reference flags from entry symbol to function |
5210 | descriptor symbol. */ | |
bc4e12de | 5211 | fdh->elf.root.non_ir_ref_regular |= eh->elf.root.non_ir_ref_regular; |
4070765b | 5212 | fdh->elf.root.non_ir_ref_dynamic |= eh->elf.root.non_ir_ref_dynamic; |
8c5b4e52 AM |
5213 | fdh->elf.ref_regular |= eh->elf.ref_regular; |
5214 | fdh->elf.ref_regular_nonweak |= eh->elf.ref_regular_nonweak; | |
5215 | ||
5216 | if (!fdh->elf.forced_local | |
5217 | && fdh->elf.dynindx == -1 | |
5218 | && fdh->elf.versioned != versioned_hidden | |
5219 | && (bfd_link_dll (info) | |
5220 | || fdh->elf.def_dynamic | |
5221 | || fdh->elf.ref_dynamic) | |
5222 | && (eh->elf.ref_regular | |
5223 | || eh->elf.def_regular)) | |
5224 | { | |
5225 | if (! bfd_elf_link_record_dynamic_symbol (info, &fdh->elf)) | |
5226 | return FALSE; | |
35b0ce59 | 5227 | } |
8387904d | 5228 | } |
99877b66 | 5229 | |
8387904d AM |
5230 | return TRUE; |
5231 | } | |
5232 | ||
f6c7c3e8 AM |
5233 | /* Set up opd section info and abiversion for IBFD, and process list |
5234 | of dot-symbols we made in link_hash_newfunc. */ | |
b3fac117 | 5235 | |
8387904d | 5236 | static bfd_boolean |
f6c7c3e8 | 5237 | ppc64_elf_before_check_relocs (bfd *ibfd, struct bfd_link_info *info) |
8387904d | 5238 | { |
99877b66 | 5239 | struct ppc_link_hash_table *htab; |
b3fac117 | 5240 | struct ppc_link_hash_entry **p, *eh; |
459609d6 | 5241 | asection *opd = bfd_get_section_by_name (ibfd, ".opd"); |
433817dd | 5242 | |
459609d6 | 5243 | if (opd != NULL && opd->size != 0) |
b3fac117 | 5244 | { |
b9399fcf AM |
5245 | BFD_ASSERT (ppc64_elf_section_data (opd)->sec_type == sec_normal); |
5246 | ppc64_elf_section_data (opd)->sec_type = sec_opd; | |
5247 | ||
459609d6 AM |
5248 | if (abiversion (ibfd) == 0) |
5249 | set_abiversion (ibfd, 1); | |
8a2058b5 | 5250 | else if (abiversion (ibfd) >= 2) |
f6c7c3e8 | 5251 | { |
695344c0 | 5252 | /* xgettext:c-format */ |
cf97bcb0 AM |
5253 | _bfd_error_handler (_("%pB .opd not allowed in ABI version %d"), |
5254 | ibfd, abiversion (ibfd)); | |
459609d6 AM |
5255 | bfd_set_error (bfd_error_bad_value); |
5256 | return FALSE; | |
f6c7c3e8 | 5257 | } |
b9399fcf | 5258 | } |
f6c7c3e8 | 5259 | |
b9399fcf AM |
5260 | if (is_ppc64_elf (info->output_bfd)) |
5261 | { | |
5262 | /* For input files without an explicit abiversion in e_flags | |
5263 | we should have flagged any with symbol st_other bits set | |
5264 | as ELFv1 and above flagged those with .opd as ELFv2. | |
5265 | Set the output abiversion if not yet set, and for any input | |
5266 | still ambiguous, take its abiversion from the output. | |
5267 | Differences in ABI are reported later. */ | |
5268 | if (abiversion (info->output_bfd) == 0) | |
5269 | set_abiversion (info->output_bfd, abiversion (ibfd)); | |
5270 | else if (abiversion (ibfd) == 0) | |
5271 | set_abiversion (ibfd, abiversion (info->output_bfd)); | |
b3fac117 AM |
5272 | } |
5273 | ||
459609d6 AM |
5274 | htab = ppc_hash_table (info); |
5275 | if (htab == NULL) | |
b9399fcf | 5276 | return TRUE; |
459609d6 | 5277 | |
b9399fcf AM |
5278 | if (opd != NULL && opd->size != 0 |
5279 | && (ibfd->flags & DYNAMIC) == 0 | |
5280 | && (opd->flags & SEC_RELOC) != 0 | |
5281 | && opd->reloc_count != 0 | |
5282 | && !bfd_is_abs_section (opd->output_section) | |
5283 | && info->gc_sections) | |
5284 | { | |
5285 | /* Garbage collection needs some extra help with .opd sections. | |
5286 | We don't want to necessarily keep everything referenced by | |
5287 | relocs in .opd, as that would keep all functions. Instead, | |
5288 | if we reference an .opd symbol (a function descriptor), we | |
5289 | want to keep the function code symbol's section. This is | |
5290 | easy for global symbols, but for local syms we need to keep | |
5291 | information about the associated function section. */ | |
5292 | bfd_size_type amt; | |
5293 | asection **opd_sym_map; | |
5294 | Elf_Internal_Shdr *symtab_hdr; | |
5295 | Elf_Internal_Rela *relocs, *rel_end, *rel; | |
5296 | ||
5297 | amt = OPD_NDX (opd->size) * sizeof (*opd_sym_map); | |
5298 | opd_sym_map = bfd_zalloc (ibfd, amt); | |
5299 | if (opd_sym_map == NULL) | |
5300 | return FALSE; | |
5301 | ppc64_elf_section_data (opd)->u.opd.func_sec = opd_sym_map; | |
5302 | relocs = _bfd_elf_link_read_relocs (ibfd, opd, NULL, NULL, | |
5303 | info->keep_memory); | |
5304 | if (relocs == NULL) | |
5305 | return FALSE; | |
5306 | symtab_hdr = &elf_symtab_hdr (ibfd); | |
5307 | rel_end = relocs + opd->reloc_count - 1; | |
5308 | for (rel = relocs; rel < rel_end; rel++) | |
5309 | { | |
5310 | enum elf_ppc64_reloc_type r_type = ELF64_R_TYPE (rel->r_info); | |
5311 | unsigned long r_symndx = ELF64_R_SYM (rel->r_info); | |
5312 | ||
5313 | if (r_type == R_PPC64_ADDR64 | |
5314 | && ELF64_R_TYPE ((rel + 1)->r_info) == R_PPC64_TOC | |
5315 | && r_symndx < symtab_hdr->sh_info) | |
5316 | { | |
5317 | Elf_Internal_Sym *isym; | |
5318 | asection *s; | |
5319 | ||
5320 | isym = bfd_sym_from_r_symndx (&htab->sym_cache, ibfd, r_symndx); | |
5321 | if (isym == NULL) | |
5322 | { | |
5323 | if (elf_section_data (opd)->relocs != relocs) | |
5324 | free (relocs); | |
5325 | return FALSE; | |
5326 | } | |
5327 | ||
5328 | s = bfd_section_from_elf_index (ibfd, isym->st_shndx); | |
5329 | if (s != NULL && s != opd) | |
5330 | opd_sym_map[OPD_NDX (rel->r_offset)] = s; | |
5331 | } | |
5332 | } | |
5333 | if (elf_section_data (opd)->relocs != relocs) | |
5334 | free (relocs); | |
5335 | } | |
459609d6 AM |
5336 | |
5337 | p = &htab->dot_syms; | |
5338 | while ((eh = *p) != NULL) | |
5339 | { | |
5340 | *p = NULL; | |
5341 | if (&eh->elf == htab->elf.hgot) | |
5342 | ; | |
5343 | else if (htab->elf.hgot == NULL | |
5344 | && strcmp (eh->elf.root.root.string, ".TOC.") == 0) | |
5345 | htab->elf.hgot = &eh->elf; | |
8c5b4e52 AM |
5346 | else if (abiversion (ibfd) <= 1) |
5347 | { | |
5348 | htab->need_func_desc_adj = 1; | |
5349 | if (!add_symbol_adjust (eh, info)) | |
5350 | return FALSE; | |
5351 | } | |
459609d6 AM |
5352 | p = &eh->u.next_dot_sym; |
5353 | } | |
b3fac117 | 5354 | return TRUE; |
8387904d AM |
5355 | } |
5356 | ||
97fed1c9 JJ |
5357 | /* Undo hash table changes when an --as-needed input file is determined |
5358 | not to be needed. */ | |
5359 | ||
5360 | static bfd_boolean | |
e5034e59 AM |
5361 | ppc64_elf_notice_as_needed (bfd *ibfd, |
5362 | struct bfd_link_info *info, | |
5363 | enum notice_asneeded_action act) | |
97fed1c9 | 5364 | { |
e5034e59 AM |
5365 | if (act == notice_not_needed) |
5366 | { | |
5367 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
4dfe6ac6 | 5368 | |
e5034e59 AM |
5369 | if (htab == NULL) |
5370 | return FALSE; | |
4dfe6ac6 | 5371 | |
e5034e59 AM |
5372 | htab->dot_syms = NULL; |
5373 | } | |
5374 | return _bfd_elf_notice_as_needed (ibfd, info, act); | |
97fed1c9 JJ |
5375 | } |
5376 | ||
aa374f67 AM |
5377 | /* If --just-symbols against a final linked binary, then assume we need |
5378 | toc adjusting stubs when calling functions defined there. */ | |
5379 | ||
5380 | static void | |
5381 | ppc64_elf_link_just_syms (asection *sec, struct bfd_link_info *info) | |
5382 | { | |
5383 | if ((sec->flags & SEC_CODE) != 0 | |
5384 | && (sec->owner->flags & (EXEC_P | DYNAMIC)) != 0 | |
5385 | && is_ppc64_elf (sec->owner)) | |
5386 | { | |
2c3f079f AM |
5387 | if (abiversion (sec->owner) >= 2 |
5388 | || bfd_get_section_by_name (sec->owner, ".opd") != NULL) | |
aa374f67 AM |
5389 | sec->has_toc_reloc = 1; |
5390 | } | |
5391 | _bfd_elf_link_just_syms (sec, info); | |
5392 | } | |
5393 | ||
e054468f | 5394 | static struct plt_entry ** |
4ce794b7 AM |
5395 | update_local_sym_info (bfd *abfd, Elf_Internal_Shdr *symtab_hdr, |
5396 | unsigned long r_symndx, bfd_vma r_addend, int tls_type) | |
411e1bfb AM |
5397 | { |
5398 | struct got_entry **local_got_ents = elf_local_got_ents (abfd); | |
e054468f | 5399 | struct plt_entry **local_plt; |
f961d9dd | 5400 | unsigned char *local_got_tls_masks; |
411e1bfb AM |
5401 | |
5402 | if (local_got_ents == NULL) | |
5403 | { | |
5404 | bfd_size_type size = symtab_hdr->sh_info; | |
5405 | ||
e054468f AM |
5406 | size *= (sizeof (*local_got_ents) |
5407 | + sizeof (*local_plt) | |
5408 | + sizeof (*local_got_tls_masks)); | |
4ce794b7 | 5409 | local_got_ents = bfd_zalloc (abfd, size); |
411e1bfb | 5410 | if (local_got_ents == NULL) |
e054468f | 5411 | return NULL; |
411e1bfb AM |
5412 | elf_local_got_ents (abfd) = local_got_ents; |
5413 | } | |
5414 | ||
37da22e5 | 5415 | if ((tls_type & (NON_GOT | TLS_EXPLICIT)) == 0) |
411e1bfb AM |
5416 | { |
5417 | struct got_entry *ent; | |
5418 | ||
5419 | for (ent = local_got_ents[r_symndx]; ent != NULL; ent = ent->next) | |
e717da7e AM |
5420 | if (ent->addend == r_addend |
5421 | && ent->owner == abfd | |
5422 | && ent->tls_type == tls_type) | |
411e1bfb AM |
5423 | break; |
5424 | if (ent == NULL) | |
5425 | { | |
5426 | bfd_size_type amt = sizeof (*ent); | |
4ce794b7 | 5427 | ent = bfd_alloc (abfd, amt); |
411e1bfb AM |
5428 | if (ent == NULL) |
5429 | return FALSE; | |
5430 | ent->next = local_got_ents[r_symndx]; | |
5431 | ent->addend = r_addend; | |
e717da7e | 5432 | ent->owner = abfd; |
411e1bfb | 5433 | ent->tls_type = tls_type; |
927be08e | 5434 | ent->is_indirect = FALSE; |
411e1bfb AM |
5435 | ent->got.refcount = 0; |
5436 | local_got_ents[r_symndx] = ent; | |
5437 | } | |
5438 | ent->got.refcount += 1; | |
5439 | } | |
5440 | ||
e054468f | 5441 | local_plt = (struct plt_entry **) (local_got_ents + symtab_hdr->sh_info); |
f961d9dd | 5442 | local_got_tls_masks = (unsigned char *) (local_plt + symtab_hdr->sh_info); |
37da22e5 | 5443 | local_got_tls_masks[r_symndx] |= tls_type & 0xff; |
e054468f AM |
5444 | |
5445 | return local_plt + r_symndx; | |
65f38f15 AM |
5446 | } |
5447 | ||
411e1bfb | 5448 | static bfd_boolean |
e054468f | 5449 | update_plt_info (bfd *abfd, struct plt_entry **plist, bfd_vma addend) |
1e2f5b6e | 5450 | { |
411e1bfb | 5451 | struct plt_entry *ent; |
1e2f5b6e | 5452 | |
e054468f | 5453 | for (ent = *plist; ent != NULL; ent = ent->next) |
411e1bfb AM |
5454 | if (ent->addend == addend) |
5455 | break; | |
5456 | if (ent == NULL) | |
1e2f5b6e | 5457 | { |
411e1bfb | 5458 | bfd_size_type amt = sizeof (*ent); |
4ce794b7 | 5459 | ent = bfd_alloc (abfd, amt); |
411e1bfb AM |
5460 | if (ent == NULL) |
5461 | return FALSE; | |
e054468f | 5462 | ent->next = *plist; |
411e1bfb AM |
5463 | ent->addend = addend; |
5464 | ent->plt.refcount = 0; | |
e054468f | 5465 | *plist = ent; |
1e2f5b6e | 5466 | } |
411e1bfb | 5467 | ent->plt.refcount += 1; |
b34976b6 | 5468 | return TRUE; |
1e2f5b6e AM |
5469 | } |
5470 | ||
e054468f AM |
5471 | static bfd_boolean |
5472 | is_branch_reloc (enum elf_ppc64_reloc_type r_type) | |
5473 | { | |
5474 | return (r_type == R_PPC64_REL24 | |
5475 | || r_type == R_PPC64_REL14 | |
5476 | || r_type == R_PPC64_REL14_BRTAKEN | |
5477 | || r_type == R_PPC64_REL14_BRNTAKEN | |
5478 | || r_type == R_PPC64_ADDR24 | |
5479 | || r_type == R_PPC64_ADDR14 | |
5480 | || r_type == R_PPC64_ADDR14_BRTAKEN | |
23cedd1d AM |
5481 | || r_type == R_PPC64_ADDR14_BRNTAKEN |
5482 | || r_type == R_PPC64_PLTCALL); | |
5483 | } | |
5484 | ||
5485 | /* Relocs on inline plt call sequence insns prior to the call. */ | |
5486 | ||
5487 | static bfd_boolean | |
5488 | is_plt_seq_reloc (enum elf_ppc64_reloc_type r_type) | |
5489 | { | |
5490 | return (r_type == R_PPC64_PLT16_HA | |
5491 | || r_type == R_PPC64_PLT16_HI | |
5492 | || r_type == R_PPC64_PLT16_LO | |
5493 | || r_type == R_PPC64_PLT16_LO_DS | |
5494 | || r_type == R_PPC64_PLTSEQ); | |
e054468f AM |
5495 | } |
5496 | ||
5bd4f169 | 5497 | /* Look through the relocs for a section during the first phase, and |
65f38f15 | 5498 | calculate needed space in the global offset table, procedure |
5d1634d7 | 5499 | linkage table, and dynamic reloc sections. */ |
5bd4f169 | 5500 | |
b34976b6 | 5501 | static bfd_boolean |
4ce794b7 AM |
5502 | ppc64_elf_check_relocs (bfd *abfd, struct bfd_link_info *info, |
5503 | asection *sec, const Elf_Internal_Rela *relocs) | |
5bd4f169 | 5504 | { |
65f38f15 | 5505 | struct ppc_link_hash_table *htab; |
5bd4f169 | 5506 | Elf_Internal_Shdr *symtab_hdr; |
c7e2358a | 5507 | struct elf_link_hash_entry **sym_hashes; |
5bd4f169 AM |
5508 | const Elf_Internal_Rela *rel; |
5509 | const Elf_Internal_Rela *rel_end; | |
5bd4f169 | 5510 | asection *sreloc; |
3a71aa26 | 5511 | struct elf_link_hash_entry *tga, *dottga; |
b9399fcf | 5512 | bfd_boolean is_opd; |
5bd4f169 | 5513 | |
0e1862bb | 5514 | if (bfd_link_relocatable (info)) |
b34976b6 | 5515 | return TRUE; |
5bd4f169 | 5516 | |
680a3378 AM |
5517 | /* Don't do anything special with non-loaded, non-alloced sections. |
5518 | In particular, any relocs in such sections should not affect GOT | |
5519 | and PLT reference counting (ie. we don't allow them to create GOT | |
5520 | or PLT entries), there's no possibility or desire to optimize TLS | |
5521 | relocs, and there's not much point in propagating relocs to shared | |
5522 | libs that the dynamic linker won't relocate. */ | |
5523 | if ((sec->flags & SEC_ALLOC) == 0) | |
5524 | return TRUE; | |
5525 | ||
0c8d6e5c | 5526 | BFD_ASSERT (is_ppc64_elf (abfd)); |
0ffa91dd | 5527 | |
65f38f15 | 5528 | htab = ppc_hash_table (info); |
4dfe6ac6 NC |
5529 | if (htab == NULL) |
5530 | return FALSE; | |
5531 | ||
3a71aa26 AM |
5532 | tga = elf_link_hash_lookup (&htab->elf, "__tls_get_addr", |
5533 | FALSE, FALSE, TRUE); | |
5534 | dottga = elf_link_hash_lookup (&htab->elf, ".__tls_get_addr", | |
5535 | FALSE, FALSE, TRUE); | |
0ffa91dd | 5536 | symtab_hdr = &elf_symtab_hdr (abfd); |
5bd4f169 | 5537 | sym_hashes = elf_sym_hashes (abfd); |
5bd4f169 | 5538 | sreloc = NULL; |
b9399fcf | 5539 | is_opd = ppc64_elf_section_data (sec)->sec_type == sec_opd; |
5bd4f169 AM |
5540 | rel_end = relocs + sec->reloc_count; |
5541 | for (rel = relocs; rel < rel_end; rel++) | |
5542 | { | |
5543 | unsigned long r_symndx; | |
5544 | struct elf_link_hash_entry *h; | |
04c9666a | 5545 | enum elf_ppc64_reloc_type r_type; |
727fc41e | 5546 | int tls_type; |
7c8fe5c4 | 5547 | struct _ppc64_elf_section_data *ppc64_sec; |
cbf95972 | 5548 | struct plt_entry **ifunc, **plt_list; |
5bd4f169 AM |
5549 | |
5550 | r_symndx = ELF64_R_SYM (rel->r_info); | |
5551 | if (r_symndx < symtab_hdr->sh_info) | |
5552 | h = NULL; | |
5553 | else | |
973a3492 L |
5554 | { |
5555 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; | |
b31867b6 | 5556 | h = elf_follow_link (h); |
1c865ab2 AM |
5557 | |
5558 | if (h == htab->elf.hgot) | |
5559 | sec->has_toc_reloc = 1; | |
973a3492 | 5560 | } |
5bd4f169 | 5561 | |
727fc41e | 5562 | tls_type = 0; |
e054468f | 5563 | ifunc = NULL; |
25f23106 AM |
5564 | if (h != NULL) |
5565 | { | |
5566 | if (h->type == STT_GNU_IFUNC) | |
5567 | { | |
5568 | h->needs_plt = 1; | |
5569 | ifunc = &h->plt.plist; | |
5570 | } | |
5571 | } | |
5572 | else | |
5573 | { | |
5574 | Elf_Internal_Sym *isym = bfd_sym_from_r_symndx (&htab->sym_cache, | |
5575 | abfd, r_symndx); | |
5576 | if (isym == NULL) | |
5577 | return FALSE; | |
5578 | ||
5579 | if (ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC) | |
5580 | { | |
5581 | ifunc = update_local_sym_info (abfd, symtab_hdr, r_symndx, | |
37da22e5 AM |
5582 | rel->r_addend, |
5583 | NON_GOT | PLT_IFUNC); | |
25f23106 AM |
5584 | if (ifunc == NULL) |
5585 | return FALSE; | |
5586 | } | |
5587 | } | |
727fc41e | 5588 | |
cbf95972 | 5589 | r_type = ELF64_R_TYPE (rel->r_info); |
a33d1f77 | 5590 | switch (r_type) |
5bd4f169 | 5591 | { |
727fc41e AM |
5592 | case R_PPC64_TLSGD: |
5593 | case R_PPC64_TLSLD: | |
5594 | /* These special tls relocs tie a call to __tls_get_addr with | |
5595 | its parameter symbol. */ | |
37da22e5 AM |
5596 | if (h != NULL) |
5597 | ((struct ppc_link_hash_entry *) h)->tls_mask |= TLS_TLS | TLS_MARK; | |
5598 | else | |
5599 | if (!update_local_sym_info (abfd, symtab_hdr, r_symndx, | |
5600 | rel->r_addend, | |
5601 | NON_GOT | TLS_TLS | TLS_MARK)) | |
5602 | return FALSE; | |
5603 | sec->has_tls_reloc = 1; | |
727fc41e AM |
5604 | break; |
5605 | ||
411e1bfb AM |
5606 | case R_PPC64_GOT_TLSLD16: |
5607 | case R_PPC64_GOT_TLSLD16_LO: | |
5608 | case R_PPC64_GOT_TLSLD16_HI: | |
5609 | case R_PPC64_GOT_TLSLD16_HA: | |
951fd09b | 5610 | tls_type = TLS_TLS | TLS_LD; |
411e1bfb AM |
5611 | goto dogottls; |
5612 | ||
5613 | case R_PPC64_GOT_TLSGD16: | |
5614 | case R_PPC64_GOT_TLSGD16_LO: | |
5615 | case R_PPC64_GOT_TLSGD16_HI: | |
5616 | case R_PPC64_GOT_TLSGD16_HA: | |
951fd09b | 5617 | tls_type = TLS_TLS | TLS_GD; |
411e1bfb AM |
5618 | goto dogottls; |
5619 | ||
5620 | case R_PPC64_GOT_TPREL16_DS: | |
5621 | case R_PPC64_GOT_TPREL16_LO_DS: | |
5622 | case R_PPC64_GOT_TPREL16_HI: | |
5623 | case R_PPC64_GOT_TPREL16_HA: | |
7c8bbca5 | 5624 | if (bfd_link_dll (info)) |
411e1bfb AM |
5625 | info->flags |= DF_STATIC_TLS; |
5626 | tls_type = TLS_TLS | TLS_TPREL; | |
5627 | goto dogottls; | |
5628 | ||
5629 | case R_PPC64_GOT_DTPREL16_DS: | |
5630 | case R_PPC64_GOT_DTPREL16_LO_DS: | |
5631 | case R_PPC64_GOT_DTPREL16_HI: | |
5632 | case R_PPC64_GOT_DTPREL16_HA: | |
5633 | tls_type = TLS_TLS | TLS_DTPREL; | |
5634 | dogottls: | |
5635 | sec->has_tls_reloc = 1; | |
1a0670f3 | 5636 | /* Fall through */ |
411e1bfb | 5637 | |
5bd4f169 | 5638 | case R_PPC64_GOT16: |
5bd4f169 | 5639 | case R_PPC64_GOT16_DS: |
65f38f15 AM |
5640 | case R_PPC64_GOT16_HA: |
5641 | case R_PPC64_GOT16_HI: | |
5642 | case R_PPC64_GOT16_LO: | |
5bd4f169 | 5643 | case R_PPC64_GOT16_LO_DS: |
65f38f15 | 5644 | /* This symbol requires a global offset table entry. */ |
4c52953f | 5645 | sec->has_toc_reloc = 1; |
33c0ec9d AM |
5646 | if (r_type == R_PPC64_GOT_TLSLD16 |
5647 | || r_type == R_PPC64_GOT_TLSGD16 | |
5648 | || r_type == R_PPC64_GOT_TPREL16_DS | |
5649 | || r_type == R_PPC64_GOT_DTPREL16_DS | |
5650 | || r_type == R_PPC64_GOT16 | |
5651 | || r_type == R_PPC64_GOT16_DS) | |
5652 | { | |
5653 | htab->do_multi_toc = 1; | |
d77c8a4b | 5654 | ppc64_elf_tdata (abfd)->has_small_toc_reloc = 1; |
33c0ec9d AM |
5655 | } |
5656 | ||
e717da7e AM |
5657 | if (ppc64_elf_tdata (abfd)->got == NULL |
5658 | && !create_got_section (abfd, info)) | |
b34976b6 | 5659 | return FALSE; |
5bd4f169 AM |
5660 | |
5661 | if (h != NULL) | |
5662 | { | |
411e1bfb AM |
5663 | struct ppc_link_hash_entry *eh; |
5664 | struct got_entry *ent; | |
65f38f15 | 5665 | |
411e1bfb AM |
5666 | eh = (struct ppc_link_hash_entry *) h; |
5667 | for (ent = eh->elf.got.glist; ent != NULL; ent = ent->next) | |
5668 | if (ent->addend == rel->r_addend | |
e717da7e | 5669 | && ent->owner == abfd |
411e1bfb AM |
5670 | && ent->tls_type == tls_type) |
5671 | break; | |
5672 | if (ent == NULL) | |
5bd4f169 | 5673 | { |
411e1bfb | 5674 | bfd_size_type amt = sizeof (*ent); |
4ce794b7 | 5675 | ent = bfd_alloc (abfd, amt); |
411e1bfb | 5676 | if (ent == NULL) |
b34976b6 | 5677 | return FALSE; |
411e1bfb AM |
5678 | ent->next = eh->elf.got.glist; |
5679 | ent->addend = rel->r_addend; | |
e717da7e | 5680 | ent->owner = abfd; |
411e1bfb | 5681 | ent->tls_type = tls_type; |
927be08e | 5682 | ent->is_indirect = FALSE; |
411e1bfb AM |
5683 | ent->got.refcount = 0; |
5684 | eh->elf.got.glist = ent; | |
5bd4f169 | 5685 | } |
411e1bfb | 5686 | ent->got.refcount += 1; |
e7b938ca | 5687 | eh->tls_mask |= tls_type; |
5bd4f169 | 5688 | } |
411e1bfb AM |
5689 | else |
5690 | /* This is a global offset table entry for a local symbol. */ | |
5691 | if (!update_local_sym_info (abfd, symtab_hdr, r_symndx, | |
5692 | rel->r_addend, tls_type)) | |
5693 | return FALSE; | |
a345bc8d AM |
5694 | |
5695 | /* We may also need a plt entry if the symbol turns out to be | |
5696 | an ifunc. */ | |
0e1862bb | 5697 | if (h != NULL && !bfd_link_pic (info) && abiversion (abfd) != 1) |
a345bc8d AM |
5698 | { |
5699 | if (!update_plt_info (abfd, &h->plt.plist, rel->r_addend)) | |
5700 | return FALSE; | |
5701 | } | |
5bd4f169 AM |
5702 | break; |
5703 | ||
5bd4f169 | 5704 | case R_PPC64_PLT16_HA: |
65f38f15 AM |
5705 | case R_PPC64_PLT16_HI: |
5706 | case R_PPC64_PLT16_LO: | |
08be3224 | 5707 | case R_PPC64_PLT16_LO_DS: |
65f38f15 AM |
5708 | case R_PPC64_PLT32: |
5709 | case R_PPC64_PLT64: | |
cbf95972 AM |
5710 | /* This symbol requires a procedure linkage table entry. */ |
5711 | plt_list = ifunc; | |
5712 | if (h != NULL) | |
e054468f | 5713 | { |
e054468f AM |
5714 | h->needs_plt = 1; |
5715 | if (h->root.root.string[0] == '.' | |
5716 | && h->root.root.string[1] != '\0') | |
5717 | ((struct ppc_link_hash_entry *) h)->is_func = 1; | |
2d7ad24e | 5718 | ((struct ppc_link_hash_entry *) h)->tls_mask |= PLT_KEEP; |
cbf95972 AM |
5719 | plt_list = &h->plt.plist; |
5720 | } | |
5721 | if (plt_list == NULL) | |
2d7ad24e AM |
5722 | plt_list = update_local_sym_info (abfd, symtab_hdr, r_symndx, |
5723 | rel->r_addend, | |
5724 | NON_GOT | PLT_KEEP); | |
cbf95972 AM |
5725 | if (!update_plt_info (abfd, plt_list, rel->r_addend)) |
5726 | return FALSE; | |
5bd4f169 AM |
5727 | break; |
5728 | ||
5729 | /* The following relocations don't need to propagate the | |
5730 | relocation if linking a shared object since they are | |
5731 | section relative. */ | |
5732 | case R_PPC64_SECTOFF: | |
5733 | case R_PPC64_SECTOFF_LO: | |
5734 | case R_PPC64_SECTOFF_HI: | |
5735 | case R_PPC64_SECTOFF_HA: | |
5736 | case R_PPC64_SECTOFF_DS: | |
5737 | case R_PPC64_SECTOFF_LO_DS: | |
411e1bfb AM |
5738 | case R_PPC64_DTPREL16: |
5739 | case R_PPC64_DTPREL16_LO: | |
5740 | case R_PPC64_DTPREL16_HI: | |
5741 | case R_PPC64_DTPREL16_HA: | |
5742 | case R_PPC64_DTPREL16_DS: | |
5743 | case R_PPC64_DTPREL16_LO_DS: | |
f9c6b907 AM |
5744 | case R_PPC64_DTPREL16_HIGH: |
5745 | case R_PPC64_DTPREL16_HIGHA: | |
411e1bfb AM |
5746 | case R_PPC64_DTPREL16_HIGHER: |
5747 | case R_PPC64_DTPREL16_HIGHERA: | |
5748 | case R_PPC64_DTPREL16_HIGHEST: | |
5749 | case R_PPC64_DTPREL16_HIGHESTA: | |
5bd4f169 AM |
5750 | break; |
5751 | ||
ad8e1ba5 | 5752 | /* Nor do these. */ |
25f23106 AM |
5753 | case R_PPC64_REL16: |
5754 | case R_PPC64_REL16_LO: | |
5755 | case R_PPC64_REL16_HI: | |
5756 | case R_PPC64_REL16_HA: | |
a680de9a | 5757 | case R_PPC64_REL16DX_HA: |
25f23106 AM |
5758 | break; |
5759 | ||
45965137 AM |
5760 | /* Not supported as a dynamic relocation. */ |
5761 | case R_PPC64_ADDR64_LOCAL: | |
0e1862bb | 5762 | if (bfd_link_pic (info)) |
45965137 AM |
5763 | { |
5764 | if (!ppc64_elf_howto_table[R_PPC64_ADDR32]) | |
5765 | ppc_howto_init (); | |
695344c0 | 5766 | /* xgettext:c-format */ |
174d0a74 | 5767 | info->callbacks->einfo (_("%H: %s reloc unsupported " |
cf97bcb0 | 5768 | "in shared libraries and PIEs\n"), |
45965137 AM |
5769 | abfd, sec, rel->r_offset, |
5770 | ppc64_elf_howto_table[r_type]->name); | |
5771 | bfd_set_error (bfd_error_bad_value); | |
5772 | return FALSE; | |
5773 | } | |
5774 | break; | |
5775 | ||
ad8e1ba5 | 5776 | case R_PPC64_TOC16: |
33c0ec9d AM |
5777 | case R_PPC64_TOC16_DS: |
5778 | htab->do_multi_toc = 1; | |
d77c8a4b | 5779 | ppc64_elf_tdata (abfd)->has_small_toc_reloc = 1; |
1a0670f3 | 5780 | /* Fall through. */ |
ad8e1ba5 AM |
5781 | case R_PPC64_TOC16_LO: |
5782 | case R_PPC64_TOC16_HI: | |
5783 | case R_PPC64_TOC16_HA: | |
ad8e1ba5 | 5784 | case R_PPC64_TOC16_LO_DS: |
4c52953f | 5785 | sec->has_toc_reloc = 1; |
ad8e1ba5 AM |
5786 | break; |
5787 | ||
006589cf AM |
5788 | /* Marker reloc. */ |
5789 | case R_PPC64_ENTRY: | |
5790 | break; | |
5791 | ||
5bd4f169 AM |
5792 | /* This relocation describes the C++ object vtable hierarchy. |
5793 | Reconstruct it for later use during GC. */ | |
5794 | case R_PPC64_GNU_VTINHERIT: | |
c152c796 | 5795 | if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset)) |
b34976b6 | 5796 | return FALSE; |
5bd4f169 AM |
5797 | break; |
5798 | ||
5799 | /* This relocation describes which C++ vtable entries are actually | |
5800 | used. Record for later use during GC. */ | |
5801 | case R_PPC64_GNU_VTENTRY: | |
d17e0c6e JB |
5802 | BFD_ASSERT (h != NULL); |
5803 | if (h != NULL | |
5804 | && !bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend)) | |
b34976b6 | 5805 | return FALSE; |
5bd4f169 AM |
5806 | break; |
5807 | ||
721956f4 AM |
5808 | case R_PPC64_REL14: |
5809 | case R_PPC64_REL14_BRTAKEN: | |
5810 | case R_PPC64_REL14_BRNTAKEN: | |
220c76dd AM |
5811 | { |
5812 | asection *dest = NULL; | |
5813 | ||
5814 | /* Heuristic: If jumping outside our section, chances are | |
5815 | we are going to need a stub. */ | |
5816 | if (h != NULL) | |
5817 | { | |
5818 | /* If the sym is weak it may be overridden later, so | |
5819 | don't assume we know where a weak sym lives. */ | |
5820 | if (h->root.type == bfd_link_hash_defined) | |
5821 | dest = h->root.u.def.section; | |
5822 | } | |
5823 | else | |
87d72d41 AM |
5824 | { |
5825 | Elf_Internal_Sym *isym; | |
5826 | ||
5827 | isym = bfd_sym_from_r_symndx (&htab->sym_cache, | |
5828 | abfd, r_symndx); | |
5829 | if (isym == NULL) | |
5830 | return FALSE; | |
5831 | ||
5832 | dest = bfd_section_from_elf_index (abfd, isym->st_shndx); | |
5833 | } | |
5834 | ||
220c76dd | 5835 | if (dest != sec) |
7c8fe5c4 | 5836 | ppc64_elf_section_data (sec)->has_14bit_branch = 1; |
220c76dd | 5837 | } |
3e04d765 AM |
5838 | goto rel24; |
5839 | ||
5840 | case R_PPC64_PLTCALL: | |
5841 | ppc64_elf_section_data (sec)->has_pltcall = 1; | |
721956f4 AM |
5842 | /* Fall through. */ |
5843 | ||
5d1634d7 | 5844 | case R_PPC64_REL24: |
3e04d765 | 5845 | rel24: |
cbf95972 AM |
5846 | plt_list = ifunc; |
5847 | if (h != NULL) | |
5d1634d7 | 5848 | { |
e054468f AM |
5849 | h->needs_plt = 1; |
5850 | if (h->root.root.string[0] == '.' | |
5851 | && h->root.root.string[1] != '\0') | |
5852 | ((struct ppc_link_hash_entry *) h)->is_func = 1; | |
cbf95972 | 5853 | |
3a71aa26 | 5854 | if (h == tga || h == dottga) |
cbf95972 AM |
5855 | { |
5856 | sec->has_tls_reloc = 1; | |
5857 | if (rel != relocs | |
5858 | && (ELF64_R_TYPE (rel[-1].r_info) == R_PPC64_TLSGD | |
5859 | || ELF64_R_TYPE (rel[-1].r_info) == R_PPC64_TLSLD)) | |
5860 | /* We have a new-style __tls_get_addr call with | |
5861 | a marker reloc. */ | |
5862 | ; | |
5863 | else | |
5864 | /* Mark this section as having an old-style call. */ | |
5865 | sec->has_tls_get_addr_call = 1; | |
5866 | } | |
5867 | plt_list = &h->plt.plist; | |
411e1bfb | 5868 | } |
cbf95972 AM |
5869 | |
5870 | /* We may need a .plt entry if the function this reloc | |
5871 | refers to is in a shared lib. */ | |
5872 | if (plt_list | |
5873 | && !update_plt_info (abfd, plt_list, rel->r_addend)) | |
5874 | return FALSE; | |
411e1bfb AM |
5875 | break; |
5876 | ||
cbf95972 AM |
5877 | case R_PPC64_ADDR14: |
5878 | case R_PPC64_ADDR14_BRNTAKEN: | |
5879 | case R_PPC64_ADDR14_BRTAKEN: | |
5880 | case R_PPC64_ADDR24: | |
5881 | goto dodyn; | |
5882 | ||
411e1bfb AM |
5883 | case R_PPC64_TPREL64: |
5884 | tls_type = TLS_EXPLICIT | TLS_TLS | TLS_TPREL; | |
7c8bbca5 | 5885 | if (bfd_link_dll (info)) |
411e1bfb AM |
5886 | info->flags |= DF_STATIC_TLS; |
5887 | goto dotlstoc; | |
5888 | ||
5889 | case R_PPC64_DTPMOD64: | |
5890 | if (rel + 1 < rel_end | |
5891 | && rel[1].r_info == ELF64_R_INFO (r_symndx, R_PPC64_DTPREL64) | |
5892 | && rel[1].r_offset == rel->r_offset + 8) | |
951fd09b | 5893 | tls_type = TLS_EXPLICIT | TLS_TLS | TLS_GD; |
411e1bfb | 5894 | else |
951fd09b | 5895 | tls_type = TLS_EXPLICIT | TLS_TLS | TLS_LD; |
411e1bfb AM |
5896 | goto dotlstoc; |
5897 | ||
5898 | case R_PPC64_DTPREL64: | |
5899 | tls_type = TLS_EXPLICIT | TLS_TLS | TLS_DTPREL; | |
5900 | if (rel != relocs | |
5901 | && rel[-1].r_info == ELF64_R_INFO (r_symndx, R_PPC64_DTPMOD64) | |
5902 | && rel[-1].r_offset == rel->r_offset - 8) | |
5903 | /* This is the second reloc of a dtpmod, dtprel pair. | |
5904 | Don't mark with TLS_DTPREL. */ | |
5905 | goto dodyn; | |
5906 | ||
5907 | dotlstoc: | |
5908 | sec->has_tls_reloc = 1; | |
5909 | if (h != NULL) | |
5910 | { | |
5911 | struct ppc_link_hash_entry *eh; | |
5912 | eh = (struct ppc_link_hash_entry *) h; | |
e7b938ca | 5913 | eh->tls_mask |= tls_type; |
411e1bfb AM |
5914 | } |
5915 | else | |
5916 | if (!update_local_sym_info (abfd, symtab_hdr, r_symndx, | |
5917 | rel->r_addend, tls_type)) | |
5918 | return FALSE; | |
5919 | ||
7c8fe5c4 AM |
5920 | ppc64_sec = ppc64_elf_section_data (sec); |
5921 | if (ppc64_sec->sec_type != sec_toc) | |
411e1bfb | 5922 | { |
3a71aa26 AM |
5923 | bfd_size_type amt; |
5924 | ||
e7b938ca | 5925 | /* One extra to simplify get_tls_mask. */ |
3a71aa26 AM |
5926 | amt = sec->size * sizeof (unsigned) / 8 + sizeof (unsigned); |
5927 | ppc64_sec->u.toc.symndx = bfd_zalloc (abfd, amt); | |
5928 | if (ppc64_sec->u.toc.symndx == NULL) | |
5929 | return FALSE; | |
5930 | amt = sec->size * sizeof (bfd_vma) / 8; | |
5931 | ppc64_sec->u.toc.add = bfd_zalloc (abfd, amt); | |
5932 | if (ppc64_sec->u.toc.add == NULL) | |
411e1bfb | 5933 | return FALSE; |
7c8fe5c4 AM |
5934 | BFD_ASSERT (ppc64_sec->sec_type == sec_normal); |
5935 | ppc64_sec->sec_type = sec_toc; | |
411e1bfb AM |
5936 | } |
5937 | BFD_ASSERT (rel->r_offset % 8 == 0); | |
3a71aa26 AM |
5938 | ppc64_sec->u.toc.symndx[rel->r_offset / 8] = r_symndx; |
5939 | ppc64_sec->u.toc.add[rel->r_offset / 8] = rel->r_addend; | |
951fd09b AM |
5940 | |
5941 | /* Mark the second slot of a GD or LD entry. | |
5942 | -1 to indicate GD and -2 to indicate LD. */ | |
5943 | if (tls_type == (TLS_EXPLICIT | TLS_TLS | TLS_GD)) | |
3a71aa26 | 5944 | ppc64_sec->u.toc.symndx[rel->r_offset / 8 + 1] = -1; |
951fd09b | 5945 | else if (tls_type == (TLS_EXPLICIT | TLS_TLS | TLS_LD)) |
3a71aa26 | 5946 | ppc64_sec->u.toc.symndx[rel->r_offset / 8 + 1] = -2; |
411e1bfb AM |
5947 | goto dodyn; |
5948 | ||
5949 | case R_PPC64_TPREL16: | |
5950 | case R_PPC64_TPREL16_LO: | |
5951 | case R_PPC64_TPREL16_HI: | |
5952 | case R_PPC64_TPREL16_HA: | |
5953 | case R_PPC64_TPREL16_DS: | |
5954 | case R_PPC64_TPREL16_LO_DS: | |
f9c6b907 AM |
5955 | case R_PPC64_TPREL16_HIGH: |
5956 | case R_PPC64_TPREL16_HIGHA: | |
411e1bfb AM |
5957 | case R_PPC64_TPREL16_HIGHER: |
5958 | case R_PPC64_TPREL16_HIGHERA: | |
5959 | case R_PPC64_TPREL16_HIGHEST: | |
5960 | case R_PPC64_TPREL16_HIGHESTA: | |
7c8bbca5 AM |
5961 | if (bfd_link_dll (info)) |
5962 | info->flags |= DF_STATIC_TLS; | |
5963 | goto dodyn; | |
5d1634d7 | 5964 | |
e86ce104 | 5965 | case R_PPC64_ADDR64: |
b9399fcf | 5966 | if (is_opd |
1e2f5b6e | 5967 | && rel + 1 < rel_end |
4ce794b7 | 5968 | && ELF64_R_TYPE ((rel + 1)->r_info) == R_PPC64_TOC) |
1e2f5b6e | 5969 | { |
8387904d | 5970 | if (h != NULL) |
8c5b4e52 | 5971 | ((struct ppc_link_hash_entry *) h)->is_func = 1; |
1e2f5b6e | 5972 | } |
e86ce104 AM |
5973 | /* Fall through. */ |
5974 | ||
65f38f15 AM |
5975 | case R_PPC64_ADDR16: |
5976 | case R_PPC64_ADDR16_DS: | |
5977 | case R_PPC64_ADDR16_HA: | |
5978 | case R_PPC64_ADDR16_HI: | |
f9c6b907 AM |
5979 | case R_PPC64_ADDR16_HIGH: |
5980 | case R_PPC64_ADDR16_HIGHA: | |
65f38f15 AM |
5981 | case R_PPC64_ADDR16_HIGHER: |
5982 | case R_PPC64_ADDR16_HIGHERA: | |
5983 | case R_PPC64_ADDR16_HIGHEST: | |
5984 | case R_PPC64_ADDR16_HIGHESTA: | |
5985 | case R_PPC64_ADDR16_LO: | |
5986 | case R_PPC64_ADDR16_LO_DS: | |
0e1862bb | 5987 | if (h != NULL && !bfd_link_pic (info) && abiversion (abfd) != 1 |
a345bc8d AM |
5988 | && rel->r_addend == 0) |
5989 | { | |
5990 | /* We may need a .plt entry if this reloc refers to a | |
5991 | function in a shared lib. */ | |
5992 | if (!update_plt_info (abfd, &h->plt.plist, rel->r_addend)) | |
5993 | return FALSE; | |
5994 | h->pointer_equality_needed = 1; | |
5995 | } | |
5996 | /* Fall through. */ | |
5997 | ||
5998 | case R_PPC64_REL30: | |
5999 | case R_PPC64_REL32: | |
6000 | case R_PPC64_REL64: | |
65f38f15 | 6001 | case R_PPC64_ADDR32: |
65f38f15 AM |
6002 | case R_PPC64_UADDR16: |
6003 | case R_PPC64_UADDR32: | |
6004 | case R_PPC64_UADDR64: | |
5bd4f169 | 6005 | case R_PPC64_TOC: |
0e1862bb | 6006 | if (h != NULL && !bfd_link_pic (info)) |
81848ca0 | 6007 | /* We may need a copy reloc. */ |
f5385ebf | 6008 | h->non_got_ref = 1; |
81848ca0 | 6009 | |
41bd81ab | 6010 | /* Don't propagate .opd relocs. */ |
b9399fcf | 6011 | if (NO_OPD_RELOCS && is_opd) |
e86ce104 | 6012 | break; |
e86ce104 | 6013 | |
65f38f15 AM |
6014 | /* If we are creating a shared library, and this is a reloc |
6015 | against a global symbol, or a non PC relative reloc | |
6016 | against a local symbol, then we need to copy the reloc | |
6017 | into the shared library. However, if we are linking with | |
6018 | -Bsymbolic, we do not need to copy a reloc against a | |
6019 | global symbol which is defined in an object we are | |
6020 | including in the link (i.e., DEF_REGULAR is set). At | |
6021 | this point we have not seen all the input files, so it is | |
6022 | possible that DEF_REGULAR is not set now but will be set | |
6023 | later (it is never cleared). In case of a weak definition, | |
6024 | DEF_REGULAR may be cleared later by a strong definition in | |
6025 | a shared library. We account for that possibility below by | |
f4656909 | 6026 | storing information in the dyn_relocs field of the hash |
65f38f15 AM |
6027 | table entry. A similar situation occurs when creating |
6028 | shared libraries and symbol visibility changes render the | |
6029 | symbol local. | |
6030 | ||
6031 | If on the other hand, we are creating an executable, we | |
6032 | may need to keep relocations for symbols satisfied by a | |
6033 | dynamic library if we manage to avoid copy relocs for the | |
6034 | symbol. */ | |
411e1bfb | 6035 | dodyn: |
0e1862bb | 6036 | if ((bfd_link_pic (info) |
1d483afe | 6037 | && (must_be_dyn_reloc (info, r_type) |
65f38f15 | 6038 | || (h != NULL |
198f1157 | 6039 | && (!SYMBOLIC_BIND (info, h) |
65f38f15 | 6040 | || h->root.type == bfd_link_hash_defweak |
f5385ebf | 6041 | || !h->def_regular)))) |
f4656909 | 6042 | || (ELIMINATE_COPY_RELOCS |
0e1862bb | 6043 | && !bfd_link_pic (info) |
65f38f15 AM |
6044 | && h != NULL |
6045 | && (h->root.type == bfd_link_hash_defweak | |
25f23106 | 6046 | || !h->def_regular)) |
0e1862bb | 6047 | || (!bfd_link_pic (info) |
25f23106 | 6048 | && ifunc != NULL)) |
5bd4f169 | 6049 | { |
65f38f15 AM |
6050 | /* We must copy these reloc types into the output file. |
6051 | Create a reloc section in dynobj and make room for | |
6052 | this reloc. */ | |
5bd4f169 AM |
6053 | if (sreloc == NULL) |
6054 | { | |
83bac4b0 NC |
6055 | sreloc = _bfd_elf_make_dynamic_reloc_section |
6056 | (sec, htab->elf.dynobj, 3, abfd, /*rela?*/ TRUE); | |
65f38f15 | 6057 | |
5bd4f169 | 6058 | if (sreloc == NULL) |
83bac4b0 | 6059 | return FALSE; |
5bd4f169 AM |
6060 | } |
6061 | ||
65f38f15 AM |
6062 | /* If this is a global symbol, we count the number of |
6063 | relocations we need for this symbol. */ | |
6064 | if (h != NULL) | |
6065 | { | |
19e08130 AM |
6066 | struct elf_dyn_relocs *p; |
6067 | struct elf_dyn_relocs **head; | |
6068 | ||
ec338859 | 6069 | head = &((struct ppc_link_hash_entry *) h)->dyn_relocs; |
19e08130 AM |
6070 | p = *head; |
6071 | if (p == NULL || p->sec != sec) | |
6072 | { | |
6073 | p = bfd_alloc (htab->elf.dynobj, sizeof *p); | |
6074 | if (p == NULL) | |
6075 | return FALSE; | |
6076 | p->next = *head; | |
6077 | *head = p; | |
6078 | p->sec = sec; | |
6079 | p->count = 0; | |
6080 | p->pc_count = 0; | |
6081 | } | |
6082 | p->count += 1; | |
6083 | if (!must_be_dyn_reloc (info, r_type)) | |
6084 | p->pc_count += 1; | |
65f38f15 AM |
6085 | } |
6086 | else | |
6087 | { | |
ec338859 AM |
6088 | /* Track dynamic relocs needed for local syms too. |
6089 | We really need local syms available to do this | |
6090 | easily. Oh well. */ | |
19e08130 AM |
6091 | struct ppc_dyn_relocs *p; |
6092 | struct ppc_dyn_relocs **head; | |
6093 | bfd_boolean is_ifunc; | |
ec338859 | 6094 | asection *s; |
6edfbbad | 6095 | void *vpp; |
87d72d41 | 6096 | Elf_Internal_Sym *isym; |
6edfbbad | 6097 | |
87d72d41 AM |
6098 | isym = bfd_sym_from_r_symndx (&htab->sym_cache, |
6099 | abfd, r_symndx); | |
6100 | if (isym == NULL) | |
b34976b6 | 6101 | return FALSE; |
ec338859 | 6102 | |
87d72d41 AM |
6103 | s = bfd_section_from_elf_index (abfd, isym->st_shndx); |
6104 | if (s == NULL) | |
6105 | s = sec; | |
6106 | ||
6edfbbad | 6107 | vpp = &elf_section_data (s)->local_dynrel; |
19e08130 AM |
6108 | head = (struct ppc_dyn_relocs **) vpp; |
6109 | is_ifunc = ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC; | |
6110 | p = *head; | |
6111 | if (p != NULL && p->sec == sec && p->ifunc != is_ifunc) | |
6112 | p = p->next; | |
6113 | if (p == NULL || p->sec != sec || p->ifunc != is_ifunc) | |
6114 | { | |
6115 | p = bfd_alloc (htab->elf.dynobj, sizeof *p); | |
6116 | if (p == NULL) | |
6117 | return FALSE; | |
6118 | p->next = *head; | |
6119 | *head = p; | |
6120 | p->sec = sec; | |
6121 | p->ifunc = is_ifunc; | |
6122 | p->count = 0; | |
6123 | } | |
6124 | p->count += 1; | |
ec338859 | 6125 | } |
65f38f15 | 6126 | } |
5bd4f169 | 6127 | break; |
65f38f15 AM |
6128 | |
6129 | default: | |
96e0dda4 | 6130 | break; |
5bd4f169 AM |
6131 | } |
6132 | } | |
6133 | ||
b34976b6 | 6134 | return TRUE; |
5bd4f169 AM |
6135 | } |
6136 | ||
ee67d69a AM |
6137 | /* Merge backend specific data from an object file to the output |
6138 | object file when linking. */ | |
6139 | ||
6140 | static bfd_boolean | |
50e03d47 | 6141 | ppc64_elf_merge_private_bfd_data (bfd *ibfd, struct bfd_link_info *info) |
ee67d69a | 6142 | { |
50e03d47 | 6143 | bfd *obfd = info->output_bfd; |
ee67d69a AM |
6144 | unsigned long iflags, oflags; |
6145 | ||
6146 | if ((ibfd->flags & BFD_LINKER_CREATED) != 0) | |
6147 | return TRUE; | |
6148 | ||
6149 | if (!is_ppc64_elf (ibfd) || !is_ppc64_elf (obfd)) | |
6150 | return TRUE; | |
6151 | ||
50e03d47 | 6152 | if (!_bfd_generic_verify_endian_match (ibfd, info)) |
ee67d69a AM |
6153 | return FALSE; |
6154 | ||
6155 | iflags = elf_elfheader (ibfd)->e_flags; | |
6156 | oflags = elf_elfheader (obfd)->e_flags; | |
6157 | ||
f6c7c3e8 | 6158 | if (iflags & ~EF_PPC64_ABI) |
ee67d69a | 6159 | { |
4eca0228 | 6160 | _bfd_error_handler |
695344c0 | 6161 | /* xgettext:c-format */ |
871b3ab2 | 6162 | (_("%pB uses unknown e_flags 0x%lx"), ibfd, iflags); |
ee67d69a AM |
6163 | bfd_set_error (bfd_error_bad_value); |
6164 | return FALSE; | |
6165 | } | |
f6c7c3e8 | 6166 | else if (iflags != oflags && iflags != 0) |
ee67d69a | 6167 | { |
4eca0228 | 6168 | _bfd_error_handler |
695344c0 | 6169 | /* xgettext:c-format */ |
871b3ab2 | 6170 | (_("%pB: ABI version %ld is not compatible with ABI version %ld output"), |
ee67d69a AM |
6171 | ibfd, iflags, oflags); |
6172 | bfd_set_error (bfd_error_bad_value); | |
6173 | return FALSE; | |
6174 | } | |
6175 | ||
50e03d47 | 6176 | _bfd_elf_ppc_merge_fp_attributes (ibfd, info); |
005d79fd | 6177 | |
ee67d69a | 6178 | /* Merge Tag_compatibility attributes and any common GNU ones. */ |
50e03d47 | 6179 | _bfd_elf_merge_object_attributes (ibfd, info); |
ee67d69a AM |
6180 | |
6181 | return TRUE; | |
6182 | } | |
6183 | ||
6184 | static bfd_boolean | |
6185 | ppc64_elf_print_private_bfd_data (bfd *abfd, void *ptr) | |
6186 | { | |
6187 | /* Print normal ELF private data. */ | |
6188 | _bfd_elf_print_private_bfd_data (abfd, ptr); | |
6189 | ||
6190 | if (elf_elfheader (abfd)->e_flags != 0) | |
6191 | { | |
6192 | FILE *file = ptr; | |
6193 | ||
ee67d69a AM |
6194 | fprintf (file, _("private flags = 0x%lx:"), |
6195 | elf_elfheader (abfd)->e_flags); | |
6196 | ||
6197 | if ((elf_elfheader (abfd)->e_flags & EF_PPC64_ABI) != 0) | |
6198 | fprintf (file, _(" [abiv%ld]"), | |
6199 | elf_elfheader (abfd)->e_flags & EF_PPC64_ABI); | |
6200 | fputc ('\n', file); | |
6201 | } | |
6202 | ||
6203 | return TRUE; | |
6204 | } | |
6205 | ||
8387904d | 6206 | /* OFFSET in OPD_SEC specifies a function descriptor. Return the address |
b53dfeb2 AM |
6207 | of the code entry point, and its section, which must be in the same |
6208 | object as OPD_SEC. Returns (bfd_vma) -1 on error. */ | |
8387904d AM |
6209 | |
6210 | static bfd_vma | |
6211 | opd_entry_value (asection *opd_sec, | |
6212 | bfd_vma offset, | |
6213 | asection **code_sec, | |
aef36ac1 AM |
6214 | bfd_vma *code_off, |
6215 | bfd_boolean in_code_sec) | |
8387904d AM |
6216 | { |
6217 | bfd *opd_bfd = opd_sec->owner; | |
8860955f | 6218 | Elf_Internal_Rela *relocs; |
8387904d | 6219 | Elf_Internal_Rela *lo, *hi, *look; |
645ea6a9 | 6220 | bfd_vma val; |
8387904d | 6221 | |
9f296da3 AM |
6222 | /* No relocs implies we are linking a --just-symbols object, or looking |
6223 | at a final linked executable with addr2line or somesuch. */ | |
4b85d634 AM |
6224 | if (opd_sec->reloc_count == 0) |
6225 | { | |
729eabd5 | 6226 | bfd_byte *contents = ppc64_elf_tdata (opd_bfd)->opd.contents; |
3b36f7e6 | 6227 | |
729eabd5 AM |
6228 | if (contents == NULL) |
6229 | { | |
6230 | if (!bfd_malloc_and_get_section (opd_bfd, opd_sec, &contents)) | |
6231 | return (bfd_vma) -1; | |
6232 | ppc64_elf_tdata (opd_bfd)->opd.contents = contents; | |
6233 | } | |
ee1e4ede | 6234 | |
dbb3fbbb | 6235 | /* PR 17512: file: 64b9dfbb. */ |
451dfd38 | 6236 | if (offset + 7 >= opd_sec->size || offset + 7 < offset) |
dbb3fbbb NC |
6237 | return (bfd_vma) -1; |
6238 | ||
729eabd5 | 6239 | val = bfd_get_64 (opd_bfd, contents + offset); |
aef36ac1 AM |
6240 | if (code_sec != NULL) |
6241 | { | |
6242 | asection *sec, *likely = NULL; | |
ee1e4ede | 6243 | |
aef36ac1 | 6244 | if (in_code_sec) |
4b85d634 | 6245 | { |
aef36ac1 AM |
6246 | sec = *code_sec; |
6247 | if (sec->vma <= val | |
6248 | && val < sec->vma + sec->size) | |
6249 | likely = sec; | |
6250 | else | |
6251 | val = -1; | |
6252 | } | |
6253 | else | |
6254 | for (sec = opd_bfd->sections; sec != NULL; sec = sec->next) | |
6255 | if (sec->vma <= val | |
6256 | && (sec->flags & SEC_LOAD) != 0 | |
6257 | && (sec->flags & SEC_ALLOC) != 0) | |
6258 | likely = sec; | |
6259 | if (likely != NULL) | |
6260 | { | |
6261 | *code_sec = likely; | |
6262 | if (code_off != NULL) | |
6263 | *code_off = val - likely->vma; | |
4b85d634 AM |
6264 | } |
6265 | } | |
aef36ac1 | 6266 | return val; |
4b85d634 AM |
6267 | } |
6268 | ||
0c8d6e5c | 6269 | BFD_ASSERT (is_ppc64_elf (opd_bfd)); |
0ffa91dd | 6270 | |
729eabd5 | 6271 | relocs = ppc64_elf_tdata (opd_bfd)->opd.relocs; |
8860955f AM |
6272 | if (relocs == NULL) |
6273 | relocs = _bfd_elf_link_read_relocs (opd_bfd, opd_sec, NULL, NULL, TRUE); | |
877a8638 NC |
6274 | /* PR 17512: file: df8e1fd6. */ |
6275 | if (relocs == NULL) | |
6276 | return (bfd_vma) -1; | |
645ea6a9 | 6277 | |
8387904d | 6278 | /* Go find the opd reloc at the sym address. */ |
8860955f | 6279 | lo = relocs; |
8387904d | 6280 | hi = lo + opd_sec->reloc_count - 1; /* ignore last reloc */ |
645ea6a9 | 6281 | val = (bfd_vma) -1; |
8387904d AM |
6282 | while (lo < hi) |
6283 | { | |
6284 | look = lo + (hi - lo) / 2; | |
6285 | if (look->r_offset < offset) | |
6286 | lo = look + 1; | |
6287 | else if (look->r_offset > offset) | |
6288 | hi = look; | |
6289 | else | |
6290 | { | |
0ffa91dd NC |
6291 | Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (opd_bfd); |
6292 | ||
8387904d AM |
6293 | if (ELF64_R_TYPE (look->r_info) == R_PPC64_ADDR64 |
6294 | && ELF64_R_TYPE ((look + 1)->r_info) == R_PPC64_TOC) | |
6295 | { | |
6296 | unsigned long symndx = ELF64_R_SYM (look->r_info); | |
b53dfeb2 | 6297 | asection *sec = NULL; |
8387904d | 6298 | |
b53dfeb2 AM |
6299 | if (symndx >= symtab_hdr->sh_info |
6300 | && elf_sym_hashes (opd_bfd) != NULL) | |
8387904d AM |
6301 | { |
6302 | struct elf_link_hash_entry **sym_hashes; | |
6303 | struct elf_link_hash_entry *rh; | |
6304 | ||
6305 | sym_hashes = elf_sym_hashes (opd_bfd); | |
6306 | rh = sym_hashes[symndx - symtab_hdr->sh_info]; | |
128205bb AM |
6307 | if (rh != NULL) |
6308 | { | |
6309 | rh = elf_follow_link (rh); | |
bb854a36 AM |
6310 | if (rh->root.type != bfd_link_hash_defined |
6311 | && rh->root.type != bfd_link_hash_defweak) | |
6312 | break; | |
6313 | if (rh->root.u.def.section->owner == opd_bfd) | |
b53dfeb2 | 6314 | { |
bb854a36 AM |
6315 | val = rh->root.u.def.value; |
6316 | sec = rh->root.u.def.section; | |
b53dfeb2 AM |
6317 | } |
6318 | } | |
6319 | } | |
6320 | ||
6321 | if (sec == NULL) | |
6322 | { | |
6323 | Elf_Internal_Sym *sym; | |
6324 | ||
6325 | if (symndx < symtab_hdr->sh_info) | |
6326 | { | |
6327 | sym = (Elf_Internal_Sym *) symtab_hdr->contents; | |
6328 | if (sym == NULL) | |
6329 | { | |
6330 | size_t symcnt = symtab_hdr->sh_info; | |
6331 | sym = bfd_elf_get_elf_syms (opd_bfd, symtab_hdr, | |
6332 | symcnt, 0, | |
6333 | NULL, NULL, NULL); | |
6334 | if (sym == NULL) | |
6335 | break; | |
6336 | symtab_hdr->contents = (bfd_byte *) sym; | |
6337 | } | |
6338 | sym += symndx; | |
128205bb AM |
6339 | } |
6340 | else | |
6341 | { | |
b53dfeb2 AM |
6342 | sym = bfd_elf_get_elf_syms (opd_bfd, symtab_hdr, |
6343 | 1, symndx, | |
6344 | NULL, NULL, NULL); | |
128205bb AM |
6345 | if (sym == NULL) |
6346 | break; | |
128205bb | 6347 | } |
b53dfeb2 AM |
6348 | sec = bfd_section_from_elf_index (opd_bfd, sym->st_shndx); |
6349 | if (sec == NULL) | |
6350 | break; | |
6351 | BFD_ASSERT ((sec->flags & SEC_MERGE) == 0); | |
6352 | val = sym->st_value; | |
8387904d | 6353 | } |
b53dfeb2 | 6354 | |
8387904d AM |
6355 | val += look->r_addend; |
6356 | if (code_off != NULL) | |
6357 | *code_off = val; | |
6358 | if (code_sec != NULL) | |
aef36ac1 AM |
6359 | { |
6360 | if (in_code_sec && *code_sec != sec) | |
6361 | return -1; | |
6362 | else | |
6363 | *code_sec = sec; | |
6364 | } | |
b53dfeb2 | 6365 | if (sec->output_section != NULL) |
8387904d | 6366 | val += sec->output_section->vma + sec->output_offset; |
8387904d AM |
6367 | } |
6368 | break; | |
6369 | } | |
6370 | } | |
645ea6a9 | 6371 | |
645ea6a9 | 6372 | return val; |
8387904d AM |
6373 | } |
6374 | ||
aef36ac1 AM |
6375 | /* If the ELF symbol SYM might be a function in SEC, return the |
6376 | function size and set *CODE_OFF to the function's entry point, | |
6377 | otherwise return zero. */ | |
9f296da3 | 6378 | |
aef36ac1 AM |
6379 | static bfd_size_type |
6380 | ppc64_elf_maybe_function_sym (const asymbol *sym, asection *sec, | |
6381 | bfd_vma *code_off) | |
9f296da3 | 6382 | { |
aef36ac1 AM |
6383 | bfd_size_type size; |
6384 | ||
6385 | if ((sym->flags & (BSF_SECTION_SYM | BSF_FILE | BSF_OBJECT | |
6386 | | BSF_THREAD_LOCAL | BSF_RELC | BSF_SRELC)) != 0) | |
6387 | return 0; | |
6388 | ||
6389 | size = 0; | |
6390 | if (!(sym->flags & BSF_SYNTHETIC)) | |
6391 | size = ((elf_symbol_type *) sym)->internal_elf_sym.st_size; | |
6392 | ||
6393 | if (strcmp (sym->section->name, ".opd") == 0) | |
9f296da3 | 6394 | { |
b07bca4e AM |
6395 | struct _opd_sec_data *opd = get_opd_info (sym->section); |
6396 | bfd_vma symval = sym->value; | |
6397 | ||
6398 | if (opd != NULL | |
6399 | && opd->adjust != NULL | |
6400 | && elf_section_data (sym->section)->relocs != NULL) | |
6401 | { | |
6402 | /* opd_entry_value will use cached relocs that have been | |
6403 | adjusted, but with raw symbols. That means both local | |
6404 | and global symbols need adjusting. */ | |
6405 | long adjust = opd->adjust[OPD_NDX (symval)]; | |
6406 | if (adjust == -1) | |
6407 | return 0; | |
6408 | symval += adjust; | |
6409 | } | |
6410 | ||
6411 | if (opd_entry_value (sym->section, symval, | |
aef36ac1 AM |
6412 | &sec, code_off, TRUE) == (bfd_vma) -1) |
6413 | return 0; | |
6414 | /* An old ABI binary with dot-syms has a size of 24 on the .opd | |
6415 | symbol. This size has nothing to do with the code size of the | |
6416 | function, which is what we're supposed to return, but the | |
6417 | code size isn't available without looking up the dot-sym. | |
6418 | However, doing that would be a waste of time particularly | |
6419 | since elf_find_function will look at the dot-sym anyway. | |
6420 | Now, elf_find_function will keep the largest size of any | |
6421 | function sym found at the code address of interest, so return | |
6422 | 1 here to avoid it incorrectly caching a larger function size | |
6423 | for a small function. This does mean we return the wrong | |
6424 | size for a new-ABI function of size 24, but all that does is | |
6425 | disable caching for such functions. */ | |
6426 | if (size == 24) | |
6427 | size = 1; | |
9f296da3 | 6428 | } |
aef36ac1 AM |
6429 | else |
6430 | { | |
6431 | if (sym->section != sec) | |
6432 | return 0; | |
6433 | *code_off = sym->value; | |
6434 | } | |
6435 | if (size == 0) | |
6436 | size = 1; | |
6437 | return size; | |
9f296da3 AM |
6438 | } |
6439 | ||
f378ab09 AM |
6440 | /* Return true if symbol is a strong function defined in an ELFv2 |
6441 | object with st_other localentry bits of zero, ie. its local entry | |
6442 | point coincides with its global entry point. */ | |
6443 | ||
6444 | static bfd_boolean | |
6445 | is_elfv2_localentry0 (struct elf_link_hash_entry *h) | |
6446 | { | |
6447 | return (h != NULL | |
6448 | && h->type == STT_FUNC | |
6449 | && h->root.type == bfd_link_hash_defined | |
6450 | && (STO_PPC64_LOCAL_MASK & h->other) == 0 | |
8b5f1ed8 | 6451 | && !((struct ppc_link_hash_entry *) h)->non_zero_localentry |
f378ab09 AM |
6452 | && is_ppc64_elf (h->root.u.def.section->owner) |
6453 | && abiversion (h->root.u.def.section->owner) >= 2); | |
6454 | } | |
6455 | ||
854b41e7 AM |
6456 | /* Return true if symbol is defined in a regular object file. */ |
6457 | ||
6458 | static bfd_boolean | |
6459 | is_static_defined (struct elf_link_hash_entry *h) | |
6460 | { | |
6461 | return ((h->root.type == bfd_link_hash_defined | |
6462 | || h->root.type == bfd_link_hash_defweak) | |
6463 | && h->root.u.def.section != NULL | |
6464 | && h->root.u.def.section->output_section != NULL); | |
6465 | } | |
6466 | ||
b31867b6 AM |
6467 | /* If FDH is a function descriptor symbol, return the associated code |
6468 | entry symbol if it is defined. Return NULL otherwise. */ | |
6469 | ||
6470 | static struct ppc_link_hash_entry * | |
6471 | defined_code_entry (struct ppc_link_hash_entry *fdh) | |
6472 | { | |
6473 | if (fdh->is_func_descriptor) | |
6474 | { | |
6475 | struct ppc_link_hash_entry *fh = ppc_follow_link (fdh->oh); | |
6476 | if (fh->elf.root.type == bfd_link_hash_defined | |
6477 | || fh->elf.root.type == bfd_link_hash_defweak) | |
6478 | return fh; | |
6479 | } | |
6480 | return NULL; | |
6481 | } | |
6482 | ||
6483 | /* If FH is a function code entry symbol, return the associated | |
6484 | function descriptor symbol if it is defined. Return NULL otherwise. */ | |
6485 | ||
6486 | static struct ppc_link_hash_entry * | |
6487 | defined_func_desc (struct ppc_link_hash_entry *fh) | |
6488 | { | |
6489 | if (fh->oh != NULL | |
6490 | && fh->oh->is_func_descriptor) | |
6491 | { | |
6492 | struct ppc_link_hash_entry *fdh = ppc_follow_link (fh->oh); | |
6493 | if (fdh->elf.root.type == bfd_link_hash_defined | |
6494 | || fdh->elf.root.type == bfd_link_hash_defweak) | |
6495 | return fdh; | |
6496 | } | |
6497 | return NULL; | |
6498 | } | |
6499 | ||
8c5b4e52 AM |
6500 | static bfd_boolean func_desc_adjust (struct elf_link_hash_entry *, void *); |
6501 | ||
6502 | /* Garbage collect sections, after first dealing with dot-symbols. */ | |
6503 | ||
6504 | static bfd_boolean | |
6505 | ppc64_elf_gc_sections (bfd *abfd, struct bfd_link_info *info) | |
6506 | { | |
6507 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
6508 | ||
6509 | if (htab != NULL && htab->need_func_desc_adj) | |
6510 | { | |
6511 | elf_link_hash_traverse (&htab->elf, func_desc_adjust, info); | |
6512 | htab->need_func_desc_adj = 0; | |
6513 | } | |
6514 | return bfd_elf_gc_sections (abfd, info); | |
6515 | } | |
6516 | ||
74f0fb50 AM |
6517 | /* Mark all our entry sym sections, both opd and code section. */ |
6518 | ||
6519 | static void | |
6520 | ppc64_elf_gc_keep (struct bfd_link_info *info) | |
6521 | { | |
6522 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
6523 | struct bfd_sym_chain *sym; | |
6524 | ||
4dfe6ac6 NC |
6525 | if (htab == NULL) |
6526 | return; | |
6527 | ||
74f0fb50 AM |
6528 | for (sym = info->gc_sym_list; sym != NULL; sym = sym->next) |
6529 | { | |
b31867b6 | 6530 | struct ppc_link_hash_entry *eh, *fh; |
74f0fb50 AM |
6531 | asection *sec; |
6532 | ||
6533 | eh = (struct ppc_link_hash_entry *) | |
b31867b6 | 6534 | elf_link_hash_lookup (&htab->elf, sym->name, FALSE, FALSE, TRUE); |
74f0fb50 AM |
6535 | if (eh == NULL) |
6536 | continue; | |
6537 | if (eh->elf.root.type != bfd_link_hash_defined | |
6538 | && eh->elf.root.type != bfd_link_hash_defweak) | |
6539 | continue; | |
6540 | ||
b31867b6 AM |
6541 | fh = defined_code_entry (eh); |
6542 | if (fh != NULL) | |
74f0fb50 | 6543 | { |
b31867b6 | 6544 | sec = fh->elf.root.u.def.section; |
74f0fb50 AM |
6545 | sec->flags |= SEC_KEEP; |
6546 | } | |
6547 | else if (get_opd_info (eh->elf.root.u.def.section) != NULL | |
6548 | && opd_entry_value (eh->elf.root.u.def.section, | |
6549 | eh->elf.root.u.def.value, | |
aef36ac1 | 6550 | &sec, NULL, FALSE) != (bfd_vma) -1) |
74f0fb50 AM |
6551 | sec->flags |= SEC_KEEP; |
6552 | ||
6553 | sec = eh->elf.root.u.def.section; | |
6554 | sec->flags |= SEC_KEEP; | |
6555 | } | |
6556 | } | |
6557 | ||
64d03ab5 AM |
6558 | /* Mark sections containing dynamically referenced symbols. When |
6559 | building shared libraries, we must assume that any visible symbol is | |
6560 | referenced. */ | |
6561 | ||
6562 | static bfd_boolean | |
6563 | ppc64_elf_gc_mark_dynamic_ref (struct elf_link_hash_entry *h, void *inf) | |
6564 | { | |
6565 | struct bfd_link_info *info = (struct bfd_link_info *) inf; | |
6566 | struct ppc_link_hash_entry *eh = (struct ppc_link_hash_entry *) h; | |
b31867b6 | 6567 | struct ppc_link_hash_entry *fdh; |
b407645f | 6568 | struct bfd_elf_dynamic_list *d = info->dynamic_list; |
64d03ab5 | 6569 | |
64d03ab5 | 6570 | /* Dynamic linking info is on the func descriptor sym. */ |
b31867b6 AM |
6571 | fdh = defined_func_desc (eh); |
6572 | if (fdh != NULL) | |
6573 | eh = fdh; | |
64d03ab5 AM |
6574 | |
6575 | if ((eh->elf.root.type == bfd_link_hash_defined | |
6576 | || eh->elf.root.type == bfd_link_hash_defweak) | |
87e79a65 | 6577 | && ((eh->elf.ref_dynamic && !eh->elf.forced_local) |
1c9177d9 | 6578 | || ((eh->elf.def_regular || ELF_COMMON_DEF_P (&eh->elf)) |
64d03ab5 | 6579 | && ELF_ST_VISIBILITY (eh->elf.other) != STV_INTERNAL |
4c58e0d8 | 6580 | && ELF_ST_VISIBILITY (eh->elf.other) != STV_HIDDEN |
0e1862bb | 6581 | && (!bfd_link_executable (info) |
e278ae05 | 6582 | || info->gc_keep_exported |
b407645f AM |
6583 | || info->export_dynamic |
6584 | || (eh->elf.dynamic | |
6585 | && d != NULL | |
6586 | && (*d->match) (&d->head, NULL, eh->elf.root.root.string))) | |
e278ae05 | 6587 | && (eh->elf.versioned >= versioned |
4c58e0d8 AM |
6588 | || !bfd_hide_sym_by_version (info->version_info, |
6589 | eh->elf.root.root.string))))) | |
64d03ab5 AM |
6590 | { |
6591 | asection *code_sec; | |
b31867b6 | 6592 | struct ppc_link_hash_entry *fh; |
64d03ab5 AM |
6593 | |
6594 | eh->elf.root.u.def.section->flags |= SEC_KEEP; | |
6595 | ||
6596 | /* Function descriptor syms cause the associated | |
6597 | function code sym section to be marked. */ | |
b31867b6 AM |
6598 | fh = defined_code_entry (eh); |
6599 | if (fh != NULL) | |
6600 | { | |
6601 | code_sec = fh->elf.root.u.def.section; | |
6602 | code_sec->flags |= SEC_KEEP; | |
6603 | } | |
64d03ab5 AM |
6604 | else if (get_opd_info (eh->elf.root.u.def.section) != NULL |
6605 | && opd_entry_value (eh->elf.root.u.def.section, | |
6606 | eh->elf.root.u.def.value, | |
aef36ac1 | 6607 | &code_sec, NULL, FALSE) != (bfd_vma) -1) |
64d03ab5 AM |
6608 | code_sec->flags |= SEC_KEEP; |
6609 | } | |
6610 | ||
6611 | return TRUE; | |
6612 | } | |
6613 | ||
5bd4f169 AM |
6614 | /* Return the section that should be marked against GC for a given |
6615 | relocation. */ | |
6616 | ||
6617 | static asection * | |
4ce794b7 | 6618 | ppc64_elf_gc_mark_hook (asection *sec, |
fb34365b | 6619 | struct bfd_link_info *info, |
4ce794b7 AM |
6620 | Elf_Internal_Rela *rel, |
6621 | struct elf_link_hash_entry *h, | |
6622 | Elf_Internal_Sym *sym) | |
5bd4f169 | 6623 | { |
ccfa59ea AM |
6624 | asection *rsec; |
6625 | ||
ccfa59ea AM |
6626 | /* Syms return NULL if we're marking .opd, so we avoid marking all |
6627 | function sections, as all functions are referenced in .opd. */ | |
6628 | rsec = NULL; | |
6629 | if (get_opd_info (sec) != NULL) | |
6630 | return rsec; | |
1e2f5b6e | 6631 | |
5bd4f169 AM |
6632 | if (h != NULL) |
6633 | { | |
04c9666a | 6634 | enum elf_ppc64_reloc_type r_type; |
b31867b6 | 6635 | struct ppc_link_hash_entry *eh, *fh, *fdh; |
a33d1f77 | 6636 | |
4ce794b7 | 6637 | r_type = ELF64_R_TYPE (rel->r_info); |
a33d1f77 | 6638 | switch (r_type) |
5bd4f169 AM |
6639 | { |
6640 | case R_PPC64_GNU_VTINHERIT: | |
6641 | case R_PPC64_GNU_VTENTRY: | |
6642 | break; | |
6643 | ||
6644 | default: | |
6645 | switch (h->root.type) | |
6646 | { | |
6647 | case bfd_link_hash_defined: | |
6648 | case bfd_link_hash_defweak: | |
ccfa59ea | 6649 | eh = (struct ppc_link_hash_entry *) h; |
b31867b6 AM |
6650 | fdh = defined_func_desc (eh); |
6651 | if (fdh != NULL) | |
8c5b4e52 AM |
6652 | { |
6653 | /* -mcall-aixdesc code references the dot-symbol on | |
6654 | a call reloc. Mark the function descriptor too | |
6655 | against garbage collection. */ | |
6656 | fdh->elf.mark = 1; | |
60d67dc8 AM |
6657 | if (fdh->elf.is_weakalias) |
6658 | weakdef (&fdh->elf)->mark = 1; | |
8c5b4e52 AM |
6659 | eh = fdh; |
6660 | } | |
1e2f5b6e AM |
6661 | |
6662 | /* Function descriptor syms cause the associated | |
6663 | function code sym section to be marked. */ | |
b31867b6 AM |
6664 | fh = defined_code_entry (eh); |
6665 | if (fh != NULL) | |
ccfa59ea AM |
6666 | { |
6667 | /* They also mark their opd section. */ | |
74f0fb50 | 6668 | eh->elf.root.u.def.section->gc_mark = 1; |
ccfa59ea | 6669 | |
b31867b6 | 6670 | rsec = fh->elf.root.u.def.section; |
ccfa59ea | 6671 | } |
8387904d AM |
6672 | else if (get_opd_info (eh->elf.root.u.def.section) != NULL |
6673 | && opd_entry_value (eh->elf.root.u.def.section, | |
6674 | eh->elf.root.u.def.value, | |
aef36ac1 | 6675 | &rsec, NULL, FALSE) != (bfd_vma) -1) |
74f0fb50 | 6676 | eh->elf.root.u.def.section->gc_mark = 1; |
ccfa59ea | 6677 | else |
1e2f5b6e AM |
6678 | rsec = h->root.u.def.section; |
6679 | break; | |
5bd4f169 AM |
6680 | |
6681 | case bfd_link_hash_common: | |
1e2f5b6e AM |
6682 | rsec = h->root.u.c.p->section; |
6683 | break; | |
5bd4f169 AM |
6684 | |
6685 | default: | |
fb34365b | 6686 | return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym); |
5bd4f169 AM |
6687 | } |
6688 | } | |
6689 | } | |
6690 | else | |
6691 | { | |
74f0fb50 | 6692 | struct _opd_sec_data *opd; |
1e2f5b6e AM |
6693 | |
6694 | rsec = bfd_section_from_elf_index (sec->owner, sym->st_shndx); | |
74f0fb50 AM |
6695 | opd = get_opd_info (rsec); |
6696 | if (opd != NULL && opd->func_sec != NULL) | |
ccfa59ea | 6697 | { |
74f0fb50 | 6698 | rsec->gc_mark = 1; |
ccfa59ea | 6699 | |
51aecdc5 | 6700 | rsec = opd->func_sec[OPD_NDX (sym->st_value + rel->r_addend)]; |
ccfa59ea | 6701 | } |
5bd4f169 AM |
6702 | } |
6703 | ||
1e2f5b6e | 6704 | return rsec; |
5bd4f169 AM |
6705 | } |
6706 | ||
deb0e272 AM |
6707 | /* The maximum size of .sfpr. */ |
6708 | #define SFPR_MAX (218*4) | |
6709 | ||
6710 | struct sfpr_def_parms | |
6711 | { | |
699733f6 AM |
6712 | const char name[12]; |
6713 | unsigned char lo, hi; | |
deb0e272 AM |
6714 | bfd_byte * (*write_ent) (bfd *, bfd_byte *, int); |
6715 | bfd_byte * (*write_tail) (bfd *, bfd_byte *, int); | |
6716 | }; | |
6717 | ||
a4b6fadd AM |
6718 | /* Auto-generate _save*, _rest* functions in .sfpr. |
6719 | If STUB_SEC is non-null, define alias symbols in STUB_SEC | |
6720 | instead. */ | |
deb0e272 | 6721 | |
4dfe6ac6 | 6722 | static bfd_boolean |
a4b6fadd AM |
6723 | sfpr_define (struct bfd_link_info *info, |
6724 | const struct sfpr_def_parms *parm, | |
6725 | asection *stub_sec) | |
deb0e272 AM |
6726 | { |
6727 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
6728 | unsigned int i; | |
6729 | size_t len = strlen (parm->name); | |
6730 | bfd_boolean writing = FALSE; | |
699733f6 | 6731 | char sym[16]; |
deb0e272 | 6732 | |
4dfe6ac6 NC |
6733 | if (htab == NULL) |
6734 | return FALSE; | |
6735 | ||
deb0e272 AM |
6736 | memcpy (sym, parm->name, len); |
6737 | sym[len + 2] = 0; | |
6738 | ||
6739 | for (i = parm->lo; i <= parm->hi; i++) | |
6740 | { | |
a4b6fadd | 6741 | struct ppc_link_hash_entry *h; |
deb0e272 AM |
6742 | |
6743 | sym[len + 0] = i / 10 + '0'; | |
6744 | sym[len + 1] = i % 10 + '0'; | |
a4b6fadd | 6745 | h = (struct ppc_link_hash_entry *) |
b32547cd | 6746 | elf_link_hash_lookup (&htab->elf, sym, writing, TRUE, TRUE); |
a4b6fadd | 6747 | if (stub_sec != NULL) |
deb0e272 | 6748 | { |
a4b6fadd AM |
6749 | if (h != NULL |
6750 | && h->elf.root.type == bfd_link_hash_defined | |
6751 | && h->elf.root.u.def.section == htab->sfpr) | |
6752 | { | |
6753 | struct elf_link_hash_entry *s; | |
6754 | char buf[32]; | |
6755 | sprintf (buf, "%08x.%s", stub_sec->id & 0xffffffff, sym); | |
6756 | s = elf_link_hash_lookup (&htab->elf, buf, TRUE, TRUE, FALSE); | |
6757 | if (s == NULL) | |
6758 | return FALSE; | |
6759 | if (s->root.type == bfd_link_hash_new | |
6760 | || (s->root.type = bfd_link_hash_defined | |
6761 | && s->root.u.def.section == stub_sec)) | |
6762 | { | |
6763 | s->root.type = bfd_link_hash_defined; | |
6764 | s->root.u.def.section = stub_sec; | |
7dda8d3c | 6765 | s->root.u.def.value = (stub_sec->size - htab->sfpr->size |
a4b6fadd AM |
6766 | + h->elf.root.u.def.value); |
6767 | s->ref_regular = 1; | |
6768 | s->def_regular = 1; | |
6769 | s->ref_regular_nonweak = 1; | |
6770 | s->forced_local = 1; | |
6771 | s->non_elf = 0; | |
6772 | s->root.linker_def = 1; | |
6773 | } | |
6774 | } | |
6775 | continue; | |
6776 | } | |
6777 | if (h != NULL) | |
6778 | { | |
6779 | h->save_res = 1; | |
6780 | if (!h->elf.def_regular) | |
deb0e272 | 6781 | { |
a4b6fadd AM |
6782 | h->elf.root.type = bfd_link_hash_defined; |
6783 | h->elf.root.u.def.section = htab->sfpr; | |
6784 | h->elf.root.u.def.value = htab->sfpr->size; | |
6785 | h->elf.type = STT_FUNC; | |
6786 | h->elf.def_regular = 1; | |
b32547cd | 6787 | h->elf.non_elf = 0; |
a4b6fadd AM |
6788 | _bfd_elf_link_hash_hide_symbol (info, &h->elf, TRUE); |
6789 | writing = TRUE; | |
deb0e272 | 6790 | if (htab->sfpr->contents == NULL) |
a4b6fadd AM |
6791 | { |
6792 | htab->sfpr->contents = bfd_alloc (htab->elf.dynobj, SFPR_MAX); | |
6793 | if (htab->sfpr->contents == NULL) | |
6794 | return FALSE; | |
6795 | } | |
deb0e272 AM |
6796 | } |
6797 | } | |
6798 | if (writing) | |
6799 | { | |
6800 | bfd_byte *p = htab->sfpr->contents + htab->sfpr->size; | |
6801 | if (i != parm->hi) | |
6802 | p = (*parm->write_ent) (htab->elf.dynobj, p, i); | |
6803 | else | |
6804 | p = (*parm->write_tail) (htab->elf.dynobj, p, i); | |
6805 | htab->sfpr->size = p - htab->sfpr->contents; | |
6806 | } | |
6807 | } | |
6808 | ||
6809 | return TRUE; | |
6810 | } | |
6811 | ||
6812 | static bfd_byte * | |
6813 | savegpr0 (bfd *abfd, bfd_byte *p, int r) | |
6814 | { | |
6815 | bfd_put_32 (abfd, STD_R0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p); | |
6816 | return p + 4; | |
6817 | } | |
6818 | ||
6819 | static bfd_byte * | |
6820 | savegpr0_tail (bfd *abfd, bfd_byte *p, int r) | |
6821 | { | |
6822 | p = savegpr0 (abfd, p, r); | |
a078d95a | 6823 | bfd_put_32 (abfd, STD_R0_0R1 + STK_LR, p); |
deb0e272 AM |
6824 | p = p + 4; |
6825 | bfd_put_32 (abfd, BLR, p); | |
6826 | return p + 4; | |
6827 | } | |
6828 | ||
6829 | static bfd_byte * | |
6830 | restgpr0 (bfd *abfd, bfd_byte *p, int r) | |
6831 | { | |
6832 | bfd_put_32 (abfd, LD_R0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p); | |
6833 | return p + 4; | |
6834 | } | |
6835 | ||
6836 | static bfd_byte * | |
6837 | restgpr0_tail (bfd *abfd, bfd_byte *p, int r) | |
6838 | { | |
a078d95a | 6839 | bfd_put_32 (abfd, LD_R0_0R1 + STK_LR, p); |
deb0e272 AM |
6840 | p = p + 4; |
6841 | p = restgpr0 (abfd, p, r); | |
6842 | bfd_put_32 (abfd, MTLR_R0, p); | |
6843 | p = p + 4; | |
6844 | if (r == 29) | |
6845 | { | |
6846 | p = restgpr0 (abfd, p, 30); | |
6847 | p = restgpr0 (abfd, p, 31); | |
6848 | } | |
6849 | bfd_put_32 (abfd, BLR, p); | |
6850 | return p + 4; | |
6851 | } | |
6852 | ||
6853 | static bfd_byte * | |
6854 | savegpr1 (bfd *abfd, bfd_byte *p, int r) | |
6855 | { | |
6856 | bfd_put_32 (abfd, STD_R0_0R12 + (r << 21) + (1 << 16) - (32 - r) * 8, p); | |
6857 | return p + 4; | |
6858 | } | |
6859 | ||
6860 | static bfd_byte * | |
6861 | savegpr1_tail (bfd *abfd, bfd_byte *p, int r) | |
6862 | { | |
6863 | p = savegpr1 (abfd, p, r); | |
6864 | bfd_put_32 (abfd, BLR, p); | |
6865 | return p + 4; | |
6866 | } | |
6867 | ||
6868 | static bfd_byte * | |
6869 | restgpr1 (bfd *abfd, bfd_byte *p, int r) | |
6870 | { | |
6871 | bfd_put_32 (abfd, LD_R0_0R12 + (r << 21) + (1 << 16) - (32 - r) * 8, p); | |
6872 | return p + 4; | |
6873 | } | |
6874 | ||
6875 | static bfd_byte * | |
6876 | restgpr1_tail (bfd *abfd, bfd_byte *p, int r) | |
6877 | { | |
6878 | p = restgpr1 (abfd, p, r); | |
6879 | bfd_put_32 (abfd, BLR, p); | |
6880 | return p + 4; | |
6881 | } | |
6882 | ||
6883 | static bfd_byte * | |
6884 | savefpr (bfd *abfd, bfd_byte *p, int r) | |
6885 | { | |
6886 | bfd_put_32 (abfd, STFD_FR0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p); | |
6887 | return p + 4; | |
6888 | } | |
6889 | ||
6890 | static bfd_byte * | |
6891 | savefpr0_tail (bfd *abfd, bfd_byte *p, int r) | |
6892 | { | |
6893 | p = savefpr (abfd, p, r); | |
a078d95a | 6894 | bfd_put_32 (abfd, STD_R0_0R1 + STK_LR, p); |
deb0e272 AM |
6895 | p = p + 4; |
6896 | bfd_put_32 (abfd, BLR, p); | |
6897 | return p + 4; | |
6898 | } | |
6899 | ||
6900 | static bfd_byte * | |
6901 | restfpr (bfd *abfd, bfd_byte *p, int r) | |
6902 | { | |
6903 | bfd_put_32 (abfd, LFD_FR0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p); | |
6904 | return p + 4; | |
6905 | } | |
6906 | ||
6907 | static bfd_byte * | |
6908 | restfpr0_tail (bfd *abfd, bfd_byte *p, int r) | |
6909 | { | |
a078d95a | 6910 | bfd_put_32 (abfd, LD_R0_0R1 + STK_LR, p); |
deb0e272 AM |
6911 | p = p + 4; |
6912 | p = restfpr (abfd, p, r); | |
6913 | bfd_put_32 (abfd, MTLR_R0, p); | |
6914 | p = p + 4; | |
6915 | if (r == 29) | |
6916 | { | |
6917 | p = restfpr (abfd, p, 30); | |
6918 | p = restfpr (abfd, p, 31); | |
6919 | } | |
6920 | bfd_put_32 (abfd, BLR, p); | |
6921 | return p + 4; | |
6922 | } | |
6923 | ||
6924 | static bfd_byte * | |
6925 | savefpr1_tail (bfd *abfd, bfd_byte *p, int r) | |
6926 | { | |
6927 | p = savefpr (abfd, p, r); | |
6928 | bfd_put_32 (abfd, BLR, p); | |
6929 | return p + 4; | |
6930 | } | |
6931 | ||
6932 | static bfd_byte * | |
6933 | restfpr1_tail (bfd *abfd, bfd_byte *p, int r) | |
6934 | { | |
6935 | p = restfpr (abfd, p, r); | |
6936 | bfd_put_32 (abfd, BLR, p); | |
6937 | return p + 4; | |
6938 | } | |
6939 | ||
6940 | static bfd_byte * | |
6941 | savevr (bfd *abfd, bfd_byte *p, int r) | |
6942 | { | |
6943 | bfd_put_32 (abfd, LI_R12_0 + (1 << 16) - (32 - r) * 16, p); | |
6944 | p = p + 4; | |
6945 | bfd_put_32 (abfd, STVX_VR0_R12_R0 + (r << 21), p); | |
6946 | return p + 4; | |
6947 | } | |
6948 | ||
6949 | static bfd_byte * | |
6950 | savevr_tail (bfd *abfd, bfd_byte *p, int r) | |
6951 | { | |
6952 | p = savevr (abfd, p, r); | |
6953 | bfd_put_32 (abfd, BLR, p); | |
6954 | return p + 4; | |
6955 | } | |
6956 | ||
6957 | static bfd_byte * | |
6958 | restvr (bfd *abfd, bfd_byte *p, int r) | |
6959 | { | |
6960 | bfd_put_32 (abfd, LI_R12_0 + (1 << 16) - (32 - r) * 16, p); | |
6961 | p = p + 4; | |
6962 | bfd_put_32 (abfd, LVX_VR0_R12_R0 + (r << 21), p); | |
6963 | return p + 4; | |
6964 | } | |
6965 | ||
6966 | static bfd_byte * | |
6967 | restvr_tail (bfd *abfd, bfd_byte *p, int r) | |
6968 | { | |
6969 | p = restvr (abfd, p, r); | |
6970 | bfd_put_32 (abfd, BLR, p); | |
6971 | return p + 4; | |
6972 | } | |
6973 | ||
e86ce104 AM |
6974 | /* Called via elf_link_hash_traverse to transfer dynamic linking |
6975 | information on function code symbol entries to their corresponding | |
6976 | function descriptor symbol entries. */ | |
deb0e272 | 6977 | |
b34976b6 | 6978 | static bfd_boolean |
4ce794b7 | 6979 | func_desc_adjust (struct elf_link_hash_entry *h, void *inf) |
5bd4f169 | 6980 | { |
e86ce104 | 6981 | struct bfd_link_info *info; |
65f38f15 | 6982 | struct ppc_link_hash_table *htab; |
50bc7936 AM |
6983 | struct ppc_link_hash_entry *fh; |
6984 | struct ppc_link_hash_entry *fdh; | |
6985 | bfd_boolean force_local; | |
5bd4f169 | 6986 | |
50bc7936 AM |
6987 | fh = (struct ppc_link_hash_entry *) h; |
6988 | if (fh->elf.root.type == bfd_link_hash_indirect) | |
b34976b6 | 6989 | return TRUE; |
e86ce104 | 6990 | |
8c5b4e52 AM |
6991 | if (!fh->is_func) |
6992 | return TRUE; | |
6993 | ||
6994 | if (fh->elf.root.root.string[0] != '.' | |
6995 | || fh->elf.root.root.string[1] == '\0') | |
6996 | return TRUE; | |
6997 | ||
4ce794b7 | 6998 | info = inf; |
65f38f15 | 6999 | htab = ppc_hash_table (info); |
4dfe6ac6 NC |
7000 | if (htab == NULL) |
7001 | return FALSE; | |
5bd4f169 | 7002 | |
8c5b4e52 AM |
7003 | /* Find the corresponding function descriptor symbol. */ |
7004 | fdh = lookup_fdh (fh, htab); | |
7005 | ||
c09bdfe5 AM |
7006 | /* Resolve undefined references to dot-symbols as the value |
7007 | in the function descriptor, if we have one in a regular object. | |
7008 | This is to satisfy cases like ".quad .foo". Calls to functions | |
7009 | in dynamic objects are handled elsewhere. */ | |
8c5b4e52 AM |
7010 | if ((fh->elf.root.type == bfd_link_hash_undefined |
7011 | || fh->elf.root.type == bfd_link_hash_undefweak) | |
7012 | && (fdh->elf.root.type == bfd_link_hash_defined | |
7013 | || fdh->elf.root.type == bfd_link_hash_defweak) | |
b31867b6 AM |
7014 | && get_opd_info (fdh->elf.root.u.def.section) != NULL |
7015 | && opd_entry_value (fdh->elf.root.u.def.section, | |
7016 | fdh->elf.root.u.def.value, | |
c09bdfe5 | 7017 | &fh->elf.root.u.def.section, |
aef36ac1 | 7018 | &fh->elf.root.u.def.value, FALSE) != (bfd_vma) -1) |
c09bdfe5 | 7019 | { |
b31867b6 | 7020 | fh->elf.root.type = fdh->elf.root.type; |
f5385ebf | 7021 | fh->elf.forced_local = 1; |
b31867b6 AM |
7022 | fh->elf.def_regular = fdh->elf.def_regular; |
7023 | fh->elf.def_dynamic = fdh->elf.def_dynamic; | |
c09bdfe5 AM |
7024 | } |
7025 | ||
8c5b4e52 AM |
7026 | if (!fh->elf.dynamic) |
7027 | { | |
7028 | struct plt_entry *ent; | |
5bd4f169 | 7029 | |
8c5b4e52 AM |
7030 | for (ent = fh->elf.plt.plist; ent != NULL; ent = ent->next) |
7031 | if (ent->plt.refcount > 0) | |
7032 | break; | |
7033 | if (ent == NULL) | |
7034 | return TRUE; | |
7035 | } | |
5bd4f169 | 7036 | |
8c5b4e52 | 7037 | /* Create a descriptor as undefined if necessary. */ |
50bc7936 | 7038 | if (fdh == NULL |
0e1862bb | 7039 | && !bfd_link_executable (info) |
50bc7936 AM |
7040 | && (fh->elf.root.type == bfd_link_hash_undefined |
7041 | || fh->elf.root.type == bfd_link_hash_undefweak)) | |
7042 | { | |
908b32fc | 7043 | fdh = make_fdh (info, fh); |
bb700d78 AM |
7044 | if (fdh == NULL) |
7045 | return FALSE; | |
50bc7936 | 7046 | } |
648cca2c | 7047 | |
8c5b4e52 | 7048 | /* We can't support overriding of symbols on a fake descriptor. */ |
908b32fc AM |
7049 | if (fdh != NULL |
7050 | && fdh->fake | |
8c5b4e52 AM |
7051 | && (fh->elf.root.type == bfd_link_hash_defined |
7052 | || fh->elf.root.type == bfd_link_hash_defweak)) | |
7053 | _bfd_elf_link_hash_hide_symbol (info, &fdh->elf, TRUE); | |
908b32fc | 7054 | |
8c5b4e52 AM |
7055 | /* Transfer dynamic linking information to the function descriptor. */ |
7056 | if (fdh != NULL) | |
7057 | { | |
f5385ebf AM |
7058 | fdh->elf.ref_regular |= fh->elf.ref_regular; |
7059 | fdh->elf.ref_dynamic |= fh->elf.ref_dynamic; | |
7060 | fdh->elf.ref_regular_nonweak |= fh->elf.ref_regular_nonweak; | |
7061 | fdh->elf.non_got_ref |= fh->elf.non_got_ref; | |
8c5b4e52 AM |
7062 | fdh->elf.dynamic |= fh->elf.dynamic; |
7063 | fdh->elf.needs_plt |= (fh->elf.needs_plt | |
7064 | || fh->elf.type == STT_FUNC | |
7065 | || fh->elf.type == STT_GNU_IFUNC); | |
7066 | move_plt_plist (fh, fdh); | |
7067 | ||
7068 | if (!fdh->elf.forced_local | |
7069 | && fh->elf.dynindx != -1) | |
7070 | if (!bfd_elf_link_record_dynamic_symbol (info, &fdh->elf)) | |
7071 | return FALSE; | |
e86ce104 AM |
7072 | } |
7073 | ||
50bc7936 AM |
7074 | /* Now that the info is on the function descriptor, clear the |
7075 | function code sym info. Any function code syms for which we | |
7076 | don't have a definition in a regular file, we force local. | |
7077 | This prevents a shared library from exporting syms that have | |
7078 | been imported from another library. Function code syms that | |
7079 | are really in the library we must leave global to prevent the | |
7080 | linker dragging in a definition from a static library. */ | |
93f3fa99 AM |
7081 | force_local = (!fh->elf.def_regular |
7082 | || fdh == NULL | |
7083 | || !fdh->elf.def_regular | |
7084 | || fdh->elf.forced_local); | |
50bc7936 AM |
7085 | _bfd_elf_link_hash_hide_symbol (info, &fh->elf, force_local); |
7086 | ||
b34976b6 | 7087 | return TRUE; |
e86ce104 | 7088 | } |
40b8271b | 7089 | |
a4b6fadd AM |
7090 | static const struct sfpr_def_parms save_res_funcs[] = |
7091 | { | |
7092 | { "_savegpr0_", 14, 31, savegpr0, savegpr0_tail }, | |
7093 | { "_restgpr0_", 14, 29, restgpr0, restgpr0_tail }, | |
7094 | { "_restgpr0_", 30, 31, restgpr0, restgpr0_tail }, | |
7095 | { "_savegpr1_", 14, 31, savegpr1, savegpr1_tail }, | |
7096 | { "_restgpr1_", 14, 31, restgpr1, restgpr1_tail }, | |
7097 | { "_savefpr_", 14, 31, savefpr, savefpr0_tail }, | |
7098 | { "_restfpr_", 14, 29, restfpr, restfpr0_tail }, | |
7099 | { "_restfpr_", 30, 31, restfpr, restfpr0_tail }, | |
7100 | { "._savef", 14, 31, savefpr, savefpr1_tail }, | |
7101 | { "._restf", 14, 31, restfpr, restfpr1_tail }, | |
7102 | { "_savevr_", 20, 31, savevr, savevr_tail }, | |
7103 | { "_restvr_", 20, 31, restvr, restvr_tail } | |
7104 | }; | |
7105 | ||
e86ce104 | 7106 | /* Called near the start of bfd_elf_size_dynamic_sections. We use |
82bd7b59 AM |
7107 | this hook to a) provide some gcc support functions, and b) transfer |
7108 | dynamic linking information gathered so far on function code symbol | |
7109 | entries, to their corresponding function descriptor symbol entries. */ | |
deb0e272 | 7110 | |
b34976b6 | 7111 | static bfd_boolean |
4ce794b7 AM |
7112 | ppc64_elf_func_desc_adjust (bfd *obfd ATTRIBUTE_UNUSED, |
7113 | struct bfd_link_info *info) | |
e86ce104 AM |
7114 | { |
7115 | struct ppc_link_hash_table *htab; | |
7116 | ||
7117 | htab = ppc_hash_table (info); | |
4dfe6ac6 NC |
7118 | if (htab == NULL) |
7119 | return FALSE; | |
7120 | ||
b32547cd AM |
7121 | /* Provide any missing _save* and _rest* functions. */ |
7122 | if (htab->sfpr != NULL) | |
7123 | { | |
7124 | unsigned int i; | |
7125 | ||
7126 | htab->sfpr->size = 0; | |
7127 | for (i = 0; i < ARRAY_SIZE (save_res_funcs); i++) | |
7128 | if (!sfpr_define (info, &save_res_funcs[i], NULL)) | |
7129 | return FALSE; | |
7130 | if (htab->sfpr->size == 0) | |
7131 | htab->sfpr->flags |= SEC_EXCLUDE; | |
7132 | } | |
7133 | ||
7134 | if (bfd_link_relocatable (info)) | |
7135 | return TRUE; | |
7136 | ||
7137 | if (htab->elf.hgot != NULL) | |
dba6fa9b AM |
7138 | { |
7139 | _bfd_elf_link_hash_hide_symbol (info, htab->elf.hgot, TRUE); | |
7140 | /* Make .TOC. defined so as to prevent it being made dynamic. | |
7141 | The wrong value here is fixed later in ppc64_elf_set_toc. */ | |
43417696 AM |
7142 | if (!htab->elf.hgot->def_regular |
7143 | || htab->elf.hgot->root.type != bfd_link_hash_defined) | |
7144 | { | |
7145 | htab->elf.hgot->root.type = bfd_link_hash_defined; | |
7146 | htab->elf.hgot->root.u.def.value = 0; | |
7147 | htab->elf.hgot->root.u.def.section = bfd_abs_section_ptr; | |
7148 | htab->elf.hgot->def_regular = 1; | |
7149 | htab->elf.hgot->root.linker_def = 1; | |
7150 | } | |
dba6fa9b | 7151 | htab->elf.hgot->type = STT_OBJECT; |
dba6fa9b AM |
7152 | htab->elf.hgot->other = ((htab->elf.hgot->other & ~ELF_ST_VISIBILITY (-1)) |
7153 | | STV_HIDDEN); | |
7154 | } | |
c66bb0ee | 7155 | |
8c5b4e52 AM |
7156 | if (htab->need_func_desc_adj) |
7157 | { | |
7158 | elf_link_hash_traverse (&htab->elf, func_desc_adjust, info); | |
7159 | htab->need_func_desc_adj = 0; | |
7160 | } | |
805fc799 | 7161 | |
b34976b6 | 7162 | return TRUE; |
e86ce104 AM |
7163 | } |
7164 | ||
98bbb1b8 | 7165 | /* Find dynamic relocs for H that apply to read-only sections. */ |
a345bc8d | 7166 | |
98bbb1b8 | 7167 | static asection * |
a345bc8d AM |
7168 | readonly_dynrelocs (struct elf_link_hash_entry *h) |
7169 | { | |
7170 | struct ppc_link_hash_entry *eh; | |
7171 | struct elf_dyn_relocs *p; | |
7172 | ||
7173 | eh = (struct ppc_link_hash_entry *) h; | |
7174 | for (p = eh->dyn_relocs; p != NULL; p = p->next) | |
7175 | { | |
7176 | asection *s = p->sec->output_section; | |
7177 | ||
7178 | if (s != NULL && (s->flags & SEC_READONLY) != 0) | |
98bbb1b8 | 7179 | return p->sec; |
a345bc8d | 7180 | } |
98bbb1b8 | 7181 | return NULL; |
a345bc8d AM |
7182 | } |
7183 | ||
d311bc8b | 7184 | /* Return true if we have dynamic relocs against H or any of its weak |
ab2477e1 AM |
7185 | aliases, that apply to read-only sections. Cannot be used after |
7186 | size_dynamic_sections. */ | |
d311bc8b AM |
7187 | |
7188 | static bfd_boolean | |
7189 | alias_readonly_dynrelocs (struct elf_link_hash_entry *h) | |
7190 | { | |
7191 | struct ppc_link_hash_entry *eh; | |
7192 | ||
7193 | eh = (struct ppc_link_hash_entry *) h; | |
7194 | do | |
7195 | { | |
7196 | if (readonly_dynrelocs (&eh->elf)) | |
7197 | return TRUE; | |
ab2477e1 | 7198 | eh = (struct ppc_link_hash_entry *) eh->elf.u.alias; |
d311bc8b AM |
7199 | } while (eh != NULL && &eh->elf != h); |
7200 | ||
7201 | return FALSE; | |
7202 | } | |
8a2058b5 | 7203 | |
8a9e8e72 AM |
7204 | /* Return whether EH has pc-relative dynamic relocs. */ |
7205 | ||
7206 | static bfd_boolean | |
7207 | pc_dynrelocs (struct ppc_link_hash_entry *eh) | |
7208 | { | |
7209 | struct elf_dyn_relocs *p; | |
7210 | ||
7211 | for (p = eh->dyn_relocs; p != NULL; p = p->next) | |
7212 | if (p->pc_count != 0) | |
7213 | return TRUE; | |
7214 | return FALSE; | |
7215 | } | |
7216 | ||
8a2058b5 AM |
7217 | /* Return true if a global entry stub will be created for H. Valid |
7218 | for ELFv2 before plt entries have been allocated. */ | |
7219 | ||
7220 | static bfd_boolean | |
7221 | global_entry_stub (struct elf_link_hash_entry *h) | |
7222 | { | |
7223 | struct plt_entry *pent; | |
7224 | ||
7225 | if (!h->pointer_equality_needed | |
7226 | || h->def_regular) | |
7227 | return FALSE; | |
7228 | ||
7229 | for (pent = h->plt.plist; pent != NULL; pent = pent->next) | |
7230 | if (pent->plt.refcount > 0 | |
7231 | && pent->addend == 0) | |
7232 | return TRUE; | |
7233 | ||
7234 | return FALSE; | |
7235 | } | |
7236 | ||
e86ce104 AM |
7237 | /* Adjust a symbol defined by a dynamic object and referenced by a |
7238 | regular object. The current definition is in some section of the | |
7239 | dynamic object, but we're not including those sections. We have to | |
7240 | change the definition to something the rest of the link can | |
7241 | understand. */ | |
7242 | ||
b34976b6 | 7243 | static bfd_boolean |
4ce794b7 AM |
7244 | ppc64_elf_adjust_dynamic_symbol (struct bfd_link_info *info, |
7245 | struct elf_link_hash_entry *h) | |
e86ce104 AM |
7246 | { |
7247 | struct ppc_link_hash_table *htab; | |
5474d94f | 7248 | asection *s, *srel; |
e86ce104 AM |
7249 | |
7250 | htab = ppc_hash_table (info); | |
4dfe6ac6 NC |
7251 | if (htab == NULL) |
7252 | return FALSE; | |
e86ce104 AM |
7253 | |
7254 | /* Deal with function syms. */ | |
7255 | if (h->type == STT_FUNC | |
e054468f | 7256 | || h->type == STT_GNU_IFUNC |
f5385ebf | 7257 | || h->needs_plt) |
e86ce104 | 7258 | { |
529fe20e AM |
7259 | bfd_boolean local = (((struct ppc_link_hash_entry *) h)->save_res |
7260 | || SYMBOL_CALLS_LOCAL (info, h) | |
7261 | || UNDEFWEAK_NO_DYNAMIC_RELOC (info, h)); | |
7262 | /* Discard dyn_relocs when non-pic if we've decided that a | |
7263 | function symbol is local and not an ifunc. We keep dynamic | |
7264 | relocs for ifuncs when local rather than always emitting a | |
7265 | plt call stub for them and defining the symbol on the call | |
7266 | stub. We can't do that for ELFv1 anyway (a function symbol | |
7267 | is defined on a descriptor, not code) and it can be faster at | |
7268 | run-time due to not needing to bounce through a stub. The | |
7269 | dyn_relocs for ifuncs will be applied even in a static | |
7270 | executable. */ | |
7271 | if (!bfd_link_pic (info) | |
7272 | && h->type != STT_GNU_IFUNC | |
7273 | && local) | |
7274 | ((struct ppc_link_hash_entry *) h)->dyn_relocs = NULL; | |
7275 | ||
e86ce104 AM |
7276 | /* Clear procedure linkage table information for any symbol that |
7277 | won't need a .plt entry. */ | |
411e1bfb AM |
7278 | struct plt_entry *ent; |
7279 | for (ent = h->plt.plist; ent != NULL; ent = ent->next) | |
7280 | if (ent->plt.refcount > 0) | |
7281 | break; | |
8387904d | 7282 | if (ent == NULL |
2d7ad24e AM |
7283 | || (h->type != STT_GNU_IFUNC |
7284 | && local | |
3e04d765 AM |
7285 | && (htab->can_convert_all_inline_plt |
7286 | || (((struct ppc_link_hash_entry *) h)->tls_mask | |
7287 | & (TLS_TLS | PLT_KEEP)) != PLT_KEEP))) | |
40b8271b | 7288 | { |
411e1bfb | 7289 | h->plt.plist = NULL; |
f5385ebf | 7290 | h->needs_plt = 0; |
d1eca1e4 | 7291 | h->pointer_equality_needed = 0; |
40b8271b | 7292 | } |
8a2058b5 | 7293 | else if (abiversion (info->output_bfd) >= 2) |
a345bc8d | 7294 | { |
d1eca1e4 AM |
7295 | /* Taking a function's address in a read/write section |
7296 | doesn't require us to define the function symbol in the | |
7297 | executable on a global entry stub. A dynamic reloc can | |
8a2058b5 AM |
7298 | be used instead. The reason we prefer a few more dynamic |
7299 | relocs is that calling via a global entry stub costs a | |
7300 | few more instructions, and pointer_equality_needed causes | |
7301 | extra work in ld.so when resolving these symbols. */ | |
529fe20e | 7302 | if (global_entry_stub (h)) |
d1eca1e4 | 7303 | { |
ab2477e1 | 7304 | if (!readonly_dynrelocs (h)) |
529fe20e AM |
7305 | { |
7306 | h->pointer_equality_needed = 0; | |
04383fd1 AM |
7307 | /* If we haven't seen a branch reloc and the symbol |
7308 | isn't an ifunc then we don't need a plt entry. */ | |
529fe20e AM |
7309 | if (!h->needs_plt) |
7310 | h->plt.plist = NULL; | |
7311 | } | |
7312 | else if (!bfd_link_pic (info)) | |
7313 | /* We are going to be defining the function symbol on the | |
7314 | plt stub, so no dyn_relocs needed when non-pic. */ | |
7315 | ((struct ppc_link_hash_entry *) h)->dyn_relocs = NULL; | |
d1eca1e4 AM |
7316 | } |
7317 | ||
3988aed5 AM |
7318 | /* ELFv2 function symbols can't have copy relocs. */ |
7319 | return TRUE; | |
7320 | } | |
7321 | else if (!h->needs_plt | |
ab2477e1 | 7322 | && !readonly_dynrelocs (h)) |
3988aed5 | 7323 | { |
04383fd1 AM |
7324 | /* If we haven't seen a branch reloc and the symbol isn't an |
7325 | ifunc then we don't need a plt entry. */ | |
3988aed5 AM |
7326 | h->plt.plist = NULL; |
7327 | h->pointer_equality_needed = 0; | |
a345bc8d AM |
7328 | return TRUE; |
7329 | } | |
5bd4f169 | 7330 | } |
bbd7ec4a | 7331 | else |
411e1bfb | 7332 | h->plt.plist = NULL; |
5bd4f169 AM |
7333 | |
7334 | /* If this is a weak symbol, and there is a real definition, the | |
7335 | processor independent code will have arranged for us to see the | |
7336 | real definition first, and we can just use the same value. */ | |
60d67dc8 | 7337 | if (h->is_weakalias) |
5bd4f169 | 7338 | { |
60d67dc8 AM |
7339 | struct elf_link_hash_entry *def = weakdef (h); |
7340 | BFD_ASSERT (def->root.type == bfd_link_hash_defined); | |
7341 | h->root.u.def.section = def->root.u.def.section; | |
7342 | h->root.u.def.value = def->root.u.def.value; | |
4a7e5234 AM |
7343 | if (def->root.u.def.section == htab->elf.sdynbss |
7344 | || def->root.u.def.section == htab->elf.sdynrelro) | |
7345 | ((struct ppc_link_hash_entry *) h)->dyn_relocs = NULL; | |
b34976b6 | 7346 | return TRUE; |
5bd4f169 AM |
7347 | } |
7348 | ||
5bd4f169 AM |
7349 | /* If we are creating a shared library, we must presume that the |
7350 | only references to the symbol are via the global offset table. | |
7351 | For such cases we need not do anything here; the relocations will | |
7352 | be handled correctly by relocate_section. */ | |
0e1862bb | 7353 | if (bfd_link_pic (info)) |
b34976b6 | 7354 | return TRUE; |
5bd4f169 | 7355 | |
65f38f15 AM |
7356 | /* If there are no references to this symbol that do not use the |
7357 | GOT, we don't need to generate a copy reloc. */ | |
f5385ebf | 7358 | if (!h->non_got_ref) |
b34976b6 | 7359 | return TRUE; |
65f38f15 | 7360 | |
b186458a | 7361 | /* Don't generate a copy reloc for symbols defined in the executable. */ |
d93d1c80 | 7362 | if (!h->def_dynamic || !h->ref_regular || h->def_regular |
b186458a | 7363 | |
d93d1c80 AM |
7364 | /* If -z nocopyreloc was given, don't generate them either. */ |
7365 | || info->nocopyreloc | |
a127494f | 7366 | |
dce2246a | 7367 | /* If we don't find any dynamic relocs in read-only sections, then |
d93d1c80 | 7368 | we'll be keeping the dynamic relocs and avoiding the copy reloc. */ |
d311bc8b | 7369 | || (ELIMINATE_COPY_RELOCS && !alias_readonly_dynrelocs (h)) |
65f38f15 | 7370 | |
d93d1c80 AM |
7371 | /* Protected variables do not work with .dynbss. The copy in |
7372 | .dynbss won't be used by the shared library with the protected | |
7373 | definition for the variable. Text relocations are preferable | |
7374 | to an incorrect program. */ | |
7375 | || h->protected_def) | |
529fe20e | 7376 | return TRUE; |
a127494f | 7377 | |
5d35169e | 7378 | if (h->plt.plist != NULL) |
97b639ba AM |
7379 | { |
7380 | /* We should never get here, but unfortunately there are versions | |
7381 | of gcc out there that improperly (for this ABI) put initialized | |
7382 | function pointers, vtable refs and suchlike in read-only | |
7383 | sections. Allow them to proceed, but warn that this might | |
7384 | break at runtime. */ | |
25f53a85 | 7385 | info->callbacks->einfo |
c1c8c1ef | 7386 | (_("%P: copy reloc against `%pT' requires lazy plt linking; " |
25f53a85 | 7387 | "avoid setting LD_BIND_NOW=1 or upgrade gcc\n"), |
97b639ba AM |
7388 | h->root.root.string); |
7389 | } | |
5d35169e AM |
7390 | |
7391 | /* This is a reference to a symbol defined by a dynamic object which | |
7392 | is not a function. */ | |
7393 | ||
5bd4f169 AM |
7394 | /* We must allocate the symbol in our .dynbss section, which will |
7395 | become part of the .bss section of the executable. There will be | |
7396 | an entry for this symbol in the .dynsym section. The dynamic | |
7397 | object will contain position independent code, so all references | |
7398 | from the dynamic object to this symbol will go through the global | |
7399 | offset table. The dynamic linker will use the .dynsym entry to | |
7400 | determine the address it must put in the global offset table, so | |
7401 | both the dynamic object and the regular object will refer to the | |
7402 | same memory location for the variable. */ | |
5474d94f AM |
7403 | if ((h->root.u.def.section->flags & SEC_READONLY) != 0) |
7404 | { | |
7405 | s = htab->elf.sdynrelro; | |
7406 | srel = htab->elf.sreldynrelro; | |
7407 | } | |
7408 | else | |
7409 | { | |
7410 | s = htab->elf.sdynbss; | |
7411 | srel = htab->elf.srelbss; | |
7412 | } | |
1d7e9d18 | 7413 | if ((h->root.u.def.section->flags & SEC_ALLOC) != 0 && h->size != 0) |
5bd4f169 | 7414 | { |
4a7e5234 AM |
7415 | /* We must generate a R_PPC64_COPY reloc to tell the dynamic |
7416 | linker to copy the initial value out of the dynamic object | |
7417 | and into the runtime process image. */ | |
5474d94f | 7418 | srel->size += sizeof (Elf64_External_Rela); |
f5385ebf | 7419 | h->needs_copy = 1; |
5bd4f169 AM |
7420 | } |
7421 | ||
529fe20e AM |
7422 | /* We no longer want dyn_relocs. */ |
7423 | ((struct ppc_link_hash_entry *) h)->dyn_relocs = NULL; | |
6cabe1ea | 7424 | return _bfd_elf_adjust_dynamic_copy (info, h, s); |
5bd4f169 AM |
7425 | } |
7426 | ||
e86ce104 AM |
7427 | /* If given a function descriptor symbol, hide both the function code |
7428 | sym and the descriptor. */ | |
7429 | static void | |
4ce794b7 AM |
7430 | ppc64_elf_hide_symbol (struct bfd_link_info *info, |
7431 | struct elf_link_hash_entry *h, | |
7432 | bfd_boolean force_local) | |
e86ce104 | 7433 | { |
34814b9f | 7434 | struct ppc_link_hash_entry *eh; |
e86ce104 AM |
7435 | _bfd_elf_link_hash_hide_symbol (info, h, force_local); |
7436 | ||
34814b9f AM |
7437 | eh = (struct ppc_link_hash_entry *) h; |
7438 | if (eh->is_func_descriptor) | |
e86ce104 | 7439 | { |
34814b9f | 7440 | struct ppc_link_hash_entry *fh = eh->oh; |
e86ce104 | 7441 | |
721956f4 | 7442 | if (fh == NULL) |
d1329ca3 AM |
7443 | { |
7444 | const char *p, *q; | |
b8ac2841 | 7445 | struct elf_link_hash_table *htab = elf_hash_table (info); |
d1329ca3 AM |
7446 | char save; |
7447 | ||
7448 | /* We aren't supposed to use alloca in BFD because on | |
7449 | systems which do not have alloca the version in libiberty | |
7450 | calls xmalloc, which might cause the program to crash | |
7451 | when it runs out of memory. This function doesn't have a | |
7452 | return status, so there's no way to gracefully return an | |
7453 | error. So cheat. We know that string[-1] can be safely | |
34814b9f AM |
7454 | accessed; It's either a string in an ELF string table, |
7455 | or allocated in an objalloc structure. */ | |
d1329ca3 | 7456 | |
34814b9f | 7457 | p = eh->elf.root.root.string - 1; |
d1329ca3 AM |
7458 | save = *p; |
7459 | *(char *) p = '.'; | |
34814b9f | 7460 | fh = (struct ppc_link_hash_entry *) |
b8ac2841 | 7461 | elf_link_hash_lookup (htab, p, FALSE, FALSE, FALSE); |
d1329ca3 AM |
7462 | *(char *) p = save; |
7463 | ||
7464 | /* Unfortunately, if it so happens that the string we were | |
7465 | looking for was allocated immediately before this string, | |
7466 | then we overwrote the string terminator. That's the only | |
7467 | reason the lookup should fail. */ | |
7468 | if (fh == NULL) | |
7469 | { | |
34814b9f AM |
7470 | q = eh->elf.root.root.string + strlen (eh->elf.root.root.string); |
7471 | while (q >= eh->elf.root.root.string && *q == *p) | |
d1329ca3 | 7472 | --q, --p; |
34814b9f AM |
7473 | if (q < eh->elf.root.root.string && *p == '.') |
7474 | fh = (struct ppc_link_hash_entry *) | |
b8ac2841 | 7475 | elf_link_hash_lookup (htab, p, FALSE, FALSE, FALSE); |
d1329ca3 AM |
7476 | } |
7477 | if (fh != NULL) | |
7478 | { | |
34814b9f AM |
7479 | eh->oh = fh; |
7480 | fh->oh = eh; | |
d1329ca3 AM |
7481 | } |
7482 | } | |
e86ce104 | 7483 | if (fh != NULL) |
34814b9f | 7484 | _bfd_elf_link_hash_hide_symbol (info, &fh->elf, force_local); |
e86ce104 AM |
7485 | } |
7486 | } | |
7487 | ||
411e1bfb | 7488 | static bfd_boolean |
8843416a AM |
7489 | get_sym_h (struct elf_link_hash_entry **hp, |
7490 | Elf_Internal_Sym **symp, | |
7491 | asection **symsecp, | |
f961d9dd | 7492 | unsigned char **tls_maskp, |
8843416a AM |
7493 | Elf_Internal_Sym **locsymsp, |
7494 | unsigned long r_symndx, | |
7495 | bfd *ibfd) | |
411e1bfb | 7496 | { |
0ffa91dd | 7497 | Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (ibfd); |
411e1bfb AM |
7498 | |
7499 | if (r_symndx >= symtab_hdr->sh_info) | |
7500 | { | |
7501 | struct elf_link_hash_entry **sym_hashes = elf_sym_hashes (ibfd); | |
7502 | struct elf_link_hash_entry *h; | |
7503 | ||
7504 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; | |
b31867b6 | 7505 | h = elf_follow_link (h); |
411e1bfb AM |
7506 | |
7507 | if (hp != NULL) | |
7508 | *hp = h; | |
7509 | ||
7510 | if (symp != NULL) | |
7511 | *symp = NULL; | |
7512 | ||
7513 | if (symsecp != NULL) | |
7514 | { | |
7515 | asection *symsec = NULL; | |
7516 | if (h->root.type == bfd_link_hash_defined | |
7517 | || h->root.type == bfd_link_hash_defweak) | |
7518 | symsec = h->root.u.def.section; | |
7519 | *symsecp = symsec; | |
7520 | } | |
7521 | ||
e7b938ca | 7522 | if (tls_maskp != NULL) |
411e1bfb AM |
7523 | { |
7524 | struct ppc_link_hash_entry *eh; | |
7525 | ||
7526 | eh = (struct ppc_link_hash_entry *) h; | |
e7b938ca | 7527 | *tls_maskp = &eh->tls_mask; |
411e1bfb AM |
7528 | } |
7529 | } | |
7530 | else | |
7531 | { | |
7532 | Elf_Internal_Sym *sym; | |
7533 | Elf_Internal_Sym *locsyms = *locsymsp; | |
7534 | ||
7535 | if (locsyms == NULL) | |
7536 | { | |
7537 | locsyms = (Elf_Internal_Sym *) symtab_hdr->contents; | |
7538 | if (locsyms == NULL) | |
7539 | locsyms = bfd_elf_get_elf_syms (ibfd, symtab_hdr, | |
7540 | symtab_hdr->sh_info, | |
7541 | 0, NULL, NULL, NULL); | |
7542 | if (locsyms == NULL) | |
7543 | return FALSE; | |
7544 | *locsymsp = locsyms; | |
7545 | } | |
7546 | sym = locsyms + r_symndx; | |
7547 | ||
7548 | if (hp != NULL) | |
7549 | *hp = NULL; | |
7550 | ||
7551 | if (symp != NULL) | |
7552 | *symp = sym; | |
7553 | ||
7554 | if (symsecp != NULL) | |
cb33740c | 7555 | *symsecp = bfd_section_from_elf_index (ibfd, sym->st_shndx); |
411e1bfb | 7556 | |
e7b938ca | 7557 | if (tls_maskp != NULL) |
411e1bfb AM |
7558 | { |
7559 | struct got_entry **lgot_ents; | |
f961d9dd | 7560 | unsigned char *tls_mask; |
411e1bfb | 7561 | |
e7b938ca | 7562 | tls_mask = NULL; |
411e1bfb AM |
7563 | lgot_ents = elf_local_got_ents (ibfd); |
7564 | if (lgot_ents != NULL) | |
7565 | { | |
e054468f AM |
7566 | struct plt_entry **local_plt = (struct plt_entry **) |
7567 | (lgot_ents + symtab_hdr->sh_info); | |
f961d9dd | 7568 | unsigned char *lgot_masks = (unsigned char *) |
e054468f | 7569 | (local_plt + symtab_hdr->sh_info); |
e7b938ca | 7570 | tls_mask = &lgot_masks[r_symndx]; |
411e1bfb | 7571 | } |
e7b938ca | 7572 | *tls_maskp = tls_mask; |
411e1bfb AM |
7573 | } |
7574 | } | |
7575 | return TRUE; | |
7576 | } | |
7577 | ||
e7b938ca | 7578 | /* Returns TLS_MASKP for the given REL symbol. Function return is 0 on |
951fd09b | 7579 | error, 2 on a toc GD type suitable for optimization, 3 on a toc LD |
ad8e1ba5 | 7580 | type suitable for optimization, and 1 otherwise. */ |
951fd09b AM |
7581 | |
7582 | static int | |
f961d9dd | 7583 | get_tls_mask (unsigned char **tls_maskp, |
3a71aa26 AM |
7584 | unsigned long *toc_symndx, |
7585 | bfd_vma *toc_addend, | |
0d4792f7 | 7586 | Elf_Internal_Sym **locsymsp, |
3a71aa26 AM |
7587 | const Elf_Internal_Rela *rel, |
7588 | bfd *ibfd) | |
411e1bfb AM |
7589 | { |
7590 | unsigned long r_symndx; | |
0d4792f7 | 7591 | int next_r; |
411e1bfb AM |
7592 | struct elf_link_hash_entry *h; |
7593 | Elf_Internal_Sym *sym; | |
7594 | asection *sec; | |
7595 | bfd_vma off; | |
7596 | ||
7597 | r_symndx = ELF64_R_SYM (rel->r_info); | |
e7b938ca | 7598 | if (!get_sym_h (&h, &sym, &sec, tls_maskp, locsymsp, r_symndx, ibfd)) |
951fd09b | 7599 | return 0; |
411e1bfb | 7600 | |
37da22e5 AM |
7601 | if ((*tls_maskp != NULL |
7602 | && (**tls_maskp & TLS_TLS) != 0 | |
7603 | && **tls_maskp != (TLS_TLS | TLS_MARK)) | |
411e1bfb | 7604 | || sec == NULL |
6bee8834 | 7605 | || ppc64_elf_section_data (sec) == NULL |
7c8fe5c4 | 7606 | || ppc64_elf_section_data (sec)->sec_type != sec_toc) |
951fd09b | 7607 | return 1; |
411e1bfb AM |
7608 | |
7609 | /* Look inside a TOC section too. */ | |
7610 | if (h != NULL) | |
7611 | { | |
7612 | BFD_ASSERT (h->root.type == bfd_link_hash_defined); | |
7613 | off = h->root.u.def.value; | |
7614 | } | |
7615 | else | |
7616 | off = sym->st_value; | |
7617 | off += rel->r_addend; | |
7618 | BFD_ASSERT (off % 8 == 0); | |
3a71aa26 AM |
7619 | r_symndx = ppc64_elf_section_data (sec)->u.toc.symndx[off / 8]; |
7620 | next_r = ppc64_elf_section_data (sec)->u.toc.symndx[off / 8 + 1]; | |
0d4792f7 AM |
7621 | if (toc_symndx != NULL) |
7622 | *toc_symndx = r_symndx; | |
3a71aa26 AM |
7623 | if (toc_addend != NULL) |
7624 | *toc_addend = ppc64_elf_section_data (sec)->u.toc.add[off / 8]; | |
7625 | if (!get_sym_h (&h, &sym, &sec, tls_maskp, locsymsp, r_symndx, ibfd)) | |
7626 | return 0; | |
854b41e7 | 7627 | if ((h == NULL || is_static_defined (h)) |
0d4792f7 AM |
7628 | && (next_r == -1 || next_r == -2)) |
7629 | return 1 - next_r; | |
951fd09b | 7630 | return 1; |
411e1bfb AM |
7631 | } |
7632 | ||
3b421ab3 AM |
7633 | /* Find (or create) an entry in the tocsave hash table. */ |
7634 | ||
7635 | static struct tocsave_entry * | |
7636 | tocsave_find (struct ppc_link_hash_table *htab, | |
7637 | enum insert_option insert, | |
7638 | Elf_Internal_Sym **local_syms, | |
7639 | const Elf_Internal_Rela *irela, | |
7640 | bfd *ibfd) | |
7641 | { | |
7642 | unsigned long r_indx; | |
7643 | struct elf_link_hash_entry *h; | |
7644 | Elf_Internal_Sym *sym; | |
7645 | struct tocsave_entry ent, *p; | |
7646 | hashval_t hash; | |
7647 | struct tocsave_entry **slot; | |
7648 | ||
7649 | r_indx = ELF64_R_SYM (irela->r_info); | |
7650 | if (!get_sym_h (&h, &sym, &ent.sec, NULL, local_syms, r_indx, ibfd)) | |
7651 | return NULL; | |
7652 | if (ent.sec == NULL || ent.sec->output_section == NULL) | |
7653 | { | |
4eca0228 | 7654 | _bfd_error_handler |
871b3ab2 | 7655 | (_("%pB: undefined symbol on R_PPC64_TOCSAVE relocation"), ibfd); |
3b421ab3 AM |
7656 | return NULL; |
7657 | } | |
7658 | ||
7659 | if (h != NULL) | |
7660 | ent.offset = h->root.u.def.value; | |
7661 | else | |
7662 | ent.offset = sym->st_value; | |
7663 | ent.offset += irela->r_addend; | |
7664 | ||
7665 | hash = tocsave_htab_hash (&ent); | |
7666 | slot = ((struct tocsave_entry **) | |
7667 | htab_find_slot_with_hash (htab->tocsave_htab, &ent, hash, insert)); | |
7668 | if (slot == NULL) | |
7669 | return NULL; | |
7670 | ||
7671 | if (*slot == NULL) | |
7672 | { | |
7673 | p = (struct tocsave_entry *) bfd_alloc (ibfd, sizeof (*p)); | |
7674 | if (p == NULL) | |
7675 | return NULL; | |
7676 | *p = ent; | |
7677 | *slot = p; | |
7678 | } | |
7679 | return *slot; | |
7680 | } | |
7681 | ||
754021d0 | 7682 | /* Adjust all global syms defined in opd sections. In gcc generated |
8387904d | 7683 | code for the old ABI, these will already have been done. */ |
754021d0 AM |
7684 | |
7685 | static bfd_boolean | |
7686 | adjust_opd_syms (struct elf_link_hash_entry *h, void *inf ATTRIBUTE_UNUSED) | |
7687 | { | |
7688 | struct ppc_link_hash_entry *eh; | |
7689 | asection *sym_sec; | |
74f0fb50 | 7690 | struct _opd_sec_data *opd; |
754021d0 AM |
7691 | |
7692 | if (h->root.type == bfd_link_hash_indirect) | |
7693 | return TRUE; | |
7694 | ||
754021d0 AM |
7695 | if (h->root.type != bfd_link_hash_defined |
7696 | && h->root.type != bfd_link_hash_defweak) | |
7697 | return TRUE; | |
7698 | ||
7699 | eh = (struct ppc_link_hash_entry *) h; | |
7700 | if (eh->adjust_done) | |
7701 | return TRUE; | |
7702 | ||
7703 | sym_sec = eh->elf.root.u.def.section; | |
74f0fb50 AM |
7704 | opd = get_opd_info (sym_sec); |
7705 | if (opd != NULL && opd->adjust != NULL) | |
754021d0 | 7706 | { |
51aecdc5 | 7707 | long adjust = opd->adjust[OPD_NDX (eh->elf.root.u.def.value)]; |
4025353c AM |
7708 | if (adjust == -1) |
7709 | { | |
7710 | /* This entry has been deleted. */ | |
b3fac117 | 7711 | asection *dsec = ppc64_elf_tdata (sym_sec->owner)->deleted_section; |
81688140 AM |
7712 | if (dsec == NULL) |
7713 | { | |
7714 | for (dsec = sym_sec->owner->sections; dsec; dsec = dsec->next) | |
dbaa2011 | 7715 | if (discarded_section (dsec)) |
81688140 | 7716 | { |
b3fac117 | 7717 | ppc64_elf_tdata (sym_sec->owner)->deleted_section = dsec; |
81688140 AM |
7718 | break; |
7719 | } | |
7720 | } | |
4025353c | 7721 | eh->elf.root.u.def.value = 0; |
81688140 | 7722 | eh->elf.root.u.def.section = dsec; |
4025353c AM |
7723 | } |
7724 | else | |
7725 | eh->elf.root.u.def.value += adjust; | |
754021d0 AM |
7726 | eh->adjust_done = 1; |
7727 | } | |
7728 | return TRUE; | |
7729 | } | |
7730 | ||
8c1d1bb8 | 7731 | /* Handles decrementing dynamic reloc counts for the reloc specified by |
19e08130 | 7732 | R_INFO in section SEC. If LOCAL_SYMS is NULL, then H and SYM |
8c1d1bb8 AM |
7733 | have already been determined. */ |
7734 | ||
7735 | static bfd_boolean | |
7736 | dec_dynrel_count (bfd_vma r_info, | |
7737 | asection *sec, | |
7738 | struct bfd_link_info *info, | |
7739 | Elf_Internal_Sym **local_syms, | |
7740 | struct elf_link_hash_entry *h, | |
19e08130 | 7741 | Elf_Internal_Sym *sym) |
8c1d1bb8 AM |
7742 | { |
7743 | enum elf_ppc64_reloc_type r_type; | |
19e08130 | 7744 | asection *sym_sec = NULL; |
8c1d1bb8 AM |
7745 | |
7746 | /* Can this reloc be dynamic? This switch, and later tests here | |
7747 | should be kept in sync with the code in check_relocs. */ | |
7748 | r_type = ELF64_R_TYPE (r_info); | |
7749 | switch (r_type) | |
7750 | { | |
7751 | default: | |
7752 | return TRUE; | |
7753 | ||
7754 | case R_PPC64_TPREL16: | |
7755 | case R_PPC64_TPREL16_LO: | |
7756 | case R_PPC64_TPREL16_HI: | |
7757 | case R_PPC64_TPREL16_HA: | |
7758 | case R_PPC64_TPREL16_DS: | |
7759 | case R_PPC64_TPREL16_LO_DS: | |
f9c6b907 AM |
7760 | case R_PPC64_TPREL16_HIGH: |
7761 | case R_PPC64_TPREL16_HIGHA: | |
8c1d1bb8 AM |
7762 | case R_PPC64_TPREL16_HIGHER: |
7763 | case R_PPC64_TPREL16_HIGHERA: | |
7764 | case R_PPC64_TPREL16_HIGHEST: | |
7765 | case R_PPC64_TPREL16_HIGHESTA: | |
8c1d1bb8 AM |
7766 | case R_PPC64_TPREL64: |
7767 | case R_PPC64_DTPMOD64: | |
7768 | case R_PPC64_DTPREL64: | |
7769 | case R_PPC64_ADDR64: | |
7770 | case R_PPC64_REL30: | |
7771 | case R_PPC64_REL32: | |
7772 | case R_PPC64_REL64: | |
7773 | case R_PPC64_ADDR14: | |
7774 | case R_PPC64_ADDR14_BRNTAKEN: | |
7775 | case R_PPC64_ADDR14_BRTAKEN: | |
7776 | case R_PPC64_ADDR16: | |
7777 | case R_PPC64_ADDR16_DS: | |
7778 | case R_PPC64_ADDR16_HA: | |
7779 | case R_PPC64_ADDR16_HI: | |
f9c6b907 AM |
7780 | case R_PPC64_ADDR16_HIGH: |
7781 | case R_PPC64_ADDR16_HIGHA: | |
8c1d1bb8 AM |
7782 | case R_PPC64_ADDR16_HIGHER: |
7783 | case R_PPC64_ADDR16_HIGHERA: | |
7784 | case R_PPC64_ADDR16_HIGHEST: | |
7785 | case R_PPC64_ADDR16_HIGHESTA: | |
7786 | case R_PPC64_ADDR16_LO: | |
7787 | case R_PPC64_ADDR16_LO_DS: | |
7788 | case R_PPC64_ADDR24: | |
7789 | case R_PPC64_ADDR32: | |
7790 | case R_PPC64_UADDR16: | |
7791 | case R_PPC64_UADDR32: | |
7792 | case R_PPC64_UADDR64: | |
7793 | case R_PPC64_TOC: | |
7794 | break; | |
7795 | } | |
7796 | ||
7797 | if (local_syms != NULL) | |
7798 | { | |
7799 | unsigned long r_symndx; | |
8c1d1bb8 AM |
7800 | bfd *ibfd = sec->owner; |
7801 | ||
7802 | r_symndx = ELF64_R_SYM (r_info); | |
7803 | if (!get_sym_h (&h, &sym, &sym_sec, NULL, local_syms, r_symndx, ibfd)) | |
7804 | return FALSE; | |
7805 | } | |
7806 | ||
0e1862bb | 7807 | if ((bfd_link_pic (info) |
1d483afe | 7808 | && (must_be_dyn_reloc (info, r_type) |
8c1d1bb8 | 7809 | || (h != NULL |
198f1157 | 7810 | && (!SYMBOLIC_BIND (info, h) |
8c1d1bb8 AM |
7811 | || h->root.type == bfd_link_hash_defweak |
7812 | || !h->def_regular)))) | |
7813 | || (ELIMINATE_COPY_RELOCS | |
0e1862bb | 7814 | && !bfd_link_pic (info) |
8c1d1bb8 AM |
7815 | && h != NULL |
7816 | && (h->root.type == bfd_link_hash_defweak | |
7817 | || !h->def_regular))) | |
7818 | ; | |
7819 | else | |
7820 | return TRUE; | |
7821 | ||
7822 | if (h != NULL) | |
6edfbbad | 7823 | { |
19e08130 AM |
7824 | struct elf_dyn_relocs *p; |
7825 | struct elf_dyn_relocs **pp; | |
7826 | pp = &((struct ppc_link_hash_entry *) h)->dyn_relocs; | |
7827 | ||
7828 | /* elf_gc_sweep may have already removed all dyn relocs associated | |
7829 | with local syms for a given section. Also, symbol flags are | |
7830 | changed by elf_gc_sweep_symbol, confusing the test above. Don't | |
7831 | report a dynreloc miscount. */ | |
7832 | if (*pp == NULL && info->gc_sections) | |
7833 | return TRUE; | |
7834 | ||
7835 | while ((p = *pp) != NULL) | |
60124e18 | 7836 | { |
19e08130 AM |
7837 | if (p->sec == sec) |
7838 | { | |
7839 | if (!must_be_dyn_reloc (info, r_type)) | |
7840 | p->pc_count -= 1; | |
7841 | p->count -= 1; | |
7842 | if (p->count == 0) | |
7843 | *pp = p->next; | |
7844 | return TRUE; | |
7845 | } | |
7846 | pp = &p->next; | |
60124e18 | 7847 | } |
6edfbbad | 7848 | } |
19e08130 AM |
7849 | else |
7850 | { | |
7851 | struct ppc_dyn_relocs *p; | |
7852 | struct ppc_dyn_relocs **pp; | |
7853 | void *vpp; | |
7854 | bfd_boolean is_ifunc; | |
8c1d1bb8 | 7855 | |
19e08130 AM |
7856 | if (local_syms == NULL) |
7857 | sym_sec = bfd_section_from_elf_index (sec->owner, sym->st_shndx); | |
7858 | if (sym_sec == NULL) | |
7859 | sym_sec = sec; | |
c57da1a7 | 7860 | |
19e08130 AM |
7861 | vpp = &elf_section_data (sym_sec)->local_dynrel; |
7862 | pp = (struct ppc_dyn_relocs **) vpp; | |
7863 | ||
7864 | if (*pp == NULL && info->gc_sections) | |
7865 | return TRUE; | |
7866 | ||
7867 | is_ifunc = ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC; | |
7868 | while ((p = *pp) != NULL) | |
8c1d1bb8 | 7869 | { |
19e08130 AM |
7870 | if (p->sec == sec && p->ifunc == is_ifunc) |
7871 | { | |
7872 | p->count -= 1; | |
7873 | if (p->count == 0) | |
7874 | *pp = p->next; | |
7875 | return TRUE; | |
7876 | } | |
7877 | pp = &p->next; | |
8c1d1bb8 | 7878 | } |
8c1d1bb8 AM |
7879 | } |
7880 | ||
695344c0 | 7881 | /* xgettext:c-format */ |
cf97bcb0 AM |
7882 | _bfd_error_handler (_("dynreloc miscount for %pB, section %pA"), |
7883 | sec->owner, sec); | |
8c1d1bb8 AM |
7884 | bfd_set_error (bfd_error_bad_value); |
7885 | return FALSE; | |
7886 | } | |
7887 | ||
754021d0 AM |
7888 | /* Remove unused Official Procedure Descriptor entries. Currently we |
7889 | only remove those associated with functions in discarded link-once | |
7890 | sections, or weakly defined functions that have been overridden. It | |
7891 | would be possible to remove many more entries for statically linked | |
7892 | applications. */ | |
7893 | ||
b34976b6 | 7894 | bfd_boolean |
e7d1c40c | 7895 | ppc64_elf_edit_opd (struct bfd_link_info *info) |
1e2f5b6e AM |
7896 | { |
7897 | bfd *ibfd; | |
754021d0 | 7898 | bfd_boolean some_edited = FALSE; |
3f764659 | 7899 | asection *need_pad = NULL; |
e7d1c40c AM |
7900 | struct ppc_link_hash_table *htab; |
7901 | ||
7902 | htab = ppc_hash_table (info); | |
7903 | if (htab == NULL) | |
7904 | return FALSE; | |
1e2f5b6e | 7905 | |
c72f2fb2 | 7906 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next) |
1e2f5b6e AM |
7907 | { |
7908 | asection *sec; | |
7909 | Elf_Internal_Rela *relstart, *rel, *relend; | |
7910 | Elf_Internal_Shdr *symtab_hdr; | |
6cdc0ccc | 7911 | Elf_Internal_Sym *local_syms; |
74f0fb50 | 7912 | struct _opd_sec_data *opd; |
51aecdc5 | 7913 | bfd_boolean need_edit, add_aux_fields, broken; |
3f764659 | 7914 | bfd_size_type cnt_16b = 0; |
1e2f5b6e | 7915 | |
854b41e7 AM |
7916 | if (!is_ppc64_elf (ibfd)) |
7917 | continue; | |
7918 | ||
1e2f5b6e | 7919 | sec = bfd_get_section_by_name (ibfd, ".opd"); |
46de2a7c | 7920 | if (sec == NULL || sec->size == 0) |
1e2f5b6e AM |
7921 | continue; |
7922 | ||
dbaa2011 | 7923 | if (sec->sec_info_type == SEC_INFO_TYPE_JUST_SYMS) |
4b85d634 AM |
7924 | continue; |
7925 | ||
1e2f5b6e AM |
7926 | if (sec->output_section == bfd_abs_section_ptr) |
7927 | continue; | |
7928 | ||
7929 | /* Look through the section relocs. */ | |
7930 | if ((sec->flags & SEC_RELOC) == 0 || sec->reloc_count == 0) | |
7931 | continue; | |
7932 | ||
6cdc0ccc | 7933 | local_syms = NULL; |
0ffa91dd | 7934 | symtab_hdr = &elf_symtab_hdr (ibfd); |
1e2f5b6e AM |
7935 | |
7936 | /* Read the relocations. */ | |
4ce794b7 | 7937 | relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL, |
45d6a902 | 7938 | info->keep_memory); |
1e2f5b6e | 7939 | if (relstart == NULL) |
b34976b6 | 7940 | return FALSE; |
1e2f5b6e AM |
7941 | |
7942 | /* First run through the relocs to check they are sane, and to | |
7943 | determine whether we need to edit this opd section. */ | |
b34976b6 | 7944 | need_edit = FALSE; |
51aecdc5 | 7945 | broken = FALSE; |
3f764659 | 7946 | need_pad = sec; |
1e2f5b6e | 7947 | relend = relstart + sec->reloc_count; |
50bc7936 | 7948 | for (rel = relstart; rel < relend; ) |
1e2f5b6e | 7949 | { |
04c9666a | 7950 | enum elf_ppc64_reloc_type r_type; |
1e2f5b6e AM |
7951 | unsigned long r_symndx; |
7952 | asection *sym_sec; | |
7953 | struct elf_link_hash_entry *h; | |
7954 | Elf_Internal_Sym *sym; | |
51aecdc5 | 7955 | bfd_vma offset; |
1e2f5b6e | 7956 | |
51aecdc5 | 7957 | /* .opd contains an array of 16 or 24 byte entries. We're |
1e2f5b6e AM |
7958 | only interested in the reloc pointing to a function entry |
7959 | point. */ | |
51aecdc5 AM |
7960 | offset = rel->r_offset; |
7961 | if (rel + 1 == relend | |
7962 | || rel[1].r_offset != offset + 8) | |
1e2f5b6e AM |
7963 | { |
7964 | /* If someone messes with .opd alignment then after a | |
7965 | "ld -r" we might have padding in the middle of .opd. | |
7966 | Also, there's nothing to prevent someone putting | |
7967 | something silly in .opd with the assembler. No .opd | |
b34976b6 | 7968 | optimization for them! */ |
3f764659 | 7969 | broken_opd: |
4eca0228 | 7970 | _bfd_error_handler |
871b3ab2 | 7971 | (_("%pB: .opd is not a regular array of opd entries"), ibfd); |
51aecdc5 | 7972 | broken = TRUE; |
1e2f5b6e AM |
7973 | break; |
7974 | } | |
7975 | ||
50bc7936 AM |
7976 | if ((r_type = ELF64_R_TYPE (rel->r_info)) != R_PPC64_ADDR64 |
7977 | || (r_type = ELF64_R_TYPE ((rel + 1)->r_info)) != R_PPC64_TOC) | |
7978 | { | |
4eca0228 | 7979 | _bfd_error_handler |
695344c0 | 7980 | /* xgettext:c-format */ |
871b3ab2 | 7981 | (_("%pB: unexpected reloc type %u in .opd section"), |
d003868e | 7982 | ibfd, r_type); |
51aecdc5 | 7983 | broken = TRUE; |
50bc7936 AM |
7984 | break; |
7985 | } | |
7986 | ||
1e2f5b6e | 7987 | r_symndx = ELF64_R_SYM (rel->r_info); |
411e1bfb AM |
7988 | if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, |
7989 | r_symndx, ibfd)) | |
50bc7936 | 7990 | goto error_ret; |
1e2f5b6e AM |
7991 | |
7992 | if (sym_sec == NULL || sym_sec->owner == NULL) | |
7993 | { | |
411e1bfb AM |
7994 | const char *sym_name; |
7995 | if (h != NULL) | |
7996 | sym_name = h->root.root.string; | |
7997 | else | |
26c61ae5 L |
7998 | sym_name = bfd_elf_sym_name (ibfd, symtab_hdr, sym, |
7999 | sym_sec); | |
411e1bfb | 8000 | |
4eca0228 | 8001 | _bfd_error_handler |
695344c0 | 8002 | /* xgettext:c-format */ |
871b3ab2 | 8003 | (_("%pB: undefined sym `%s' in .opd section"), |
d003868e | 8004 | ibfd, sym_name); |
51aecdc5 | 8005 | broken = TRUE; |
1e2f5b6e AM |
8006 | break; |
8007 | } | |
8008 | ||
51020317 AM |
8009 | /* opd entries are always for functions defined in the |
8010 | current input bfd. If the symbol isn't defined in the | |
8011 | input bfd, then we won't be using the function in this | |
8012 | bfd; It must be defined in a linkonce section in another | |
8013 | bfd, or is weak. It's also possible that we are | |
8014 | discarding the function due to a linker script /DISCARD/, | |
8015 | which we test for via the output_section. */ | |
8016 | if (sym_sec->owner != ibfd | |
8017 | || sym_sec->output_section == bfd_abs_section_ptr) | |
b34976b6 | 8018 | need_edit = TRUE; |
1e2f5b6e | 8019 | |
50bc7936 | 8020 | rel += 2; |
51aecdc5 AM |
8021 | if (rel + 1 == relend |
8022 | || (rel + 2 < relend | |
8023 | && ELF64_R_TYPE (rel[2].r_info) == R_PPC64_TOC)) | |
8024 | ++rel; | |
8025 | ||
8026 | if (rel == relend) | |
3f764659 JJ |
8027 | { |
8028 | if (sec->size == offset + 24) | |
8029 | { | |
8030 | need_pad = NULL; | |
8031 | break; | |
8032 | } | |
51aecdc5 | 8033 | if (sec->size == offset + 16) |
3f764659 JJ |
8034 | { |
8035 | cnt_16b++; | |
8036 | break; | |
8037 | } | |
8038 | goto broken_opd; | |
8039 | } | |
3f764659 JJ |
8040 | else if (rel + 1 < relend |
8041 | && ELF64_R_TYPE (rel[0].r_info) == R_PPC64_ADDR64 | |
8042 | && ELF64_R_TYPE (rel[1].r_info) == R_PPC64_TOC) | |
8043 | { | |
51aecdc5 AM |
8044 | if (rel[0].r_offset == offset + 16) |
8045 | cnt_16b++; | |
8046 | else if (rel[0].r_offset != offset + 24) | |
8047 | goto broken_opd; | |
3f764659 JJ |
8048 | } |
8049 | else | |
8050 | goto broken_opd; | |
1e2f5b6e AM |
8051 | } |
8052 | ||
e7d1c40c | 8053 | add_aux_fields = htab->params->non_overlapping_opd && cnt_16b > 0; |
3f764659 | 8054 | |
51aecdc5 | 8055 | if (!broken && (need_edit || add_aux_fields)) |
1e2f5b6e AM |
8056 | { |
8057 | Elf_Internal_Rela *write_rel; | |
d4730f92 | 8058 | Elf_Internal_Shdr *rel_hdr; |
1e2f5b6e | 8059 | bfd_byte *rptr, *wptr; |
983bddc8 | 8060 | bfd_byte *new_contents; |
74f0fb50 AM |
8061 | bfd_size_type amt; |
8062 | ||
983bddc8 | 8063 | new_contents = NULL; |
51aecdc5 | 8064 | amt = OPD_NDX (sec->size) * sizeof (long); |
74f0fb50 | 8065 | opd = &ppc64_elf_section_data (sec)->u.opd; |
33c0ec9d | 8066 | opd->adjust = bfd_zalloc (sec->owner, amt); |
74f0fb50 AM |
8067 | if (opd->adjust == NULL) |
8068 | return FALSE; | |
1e2f5b6e AM |
8069 | |
8070 | /* This seems a waste of time as input .opd sections are all | |
8071 | zeros as generated by gcc, but I suppose there's no reason | |
8072 | this will always be so. We might start putting something in | |
8073 | the third word of .opd entries. */ | |
8074 | if ((sec->flags & SEC_IN_MEMORY) == 0) | |
8075 | { | |
eea6121a AM |
8076 | bfd_byte *loc; |
8077 | if (!bfd_malloc_and_get_section (ibfd, sec, &loc)) | |
6cdc0ccc | 8078 | { |
eea6121a AM |
8079 | if (loc != NULL) |
8080 | free (loc); | |
50bc7936 | 8081 | error_ret: |
6cdc0ccc AM |
8082 | if (local_syms != NULL |
8083 | && symtab_hdr->contents != (unsigned char *) local_syms) | |
8084 | free (local_syms); | |
6cdc0ccc AM |
8085 | if (elf_section_data (sec)->relocs != relstart) |
8086 | free (relstart); | |
b34976b6 | 8087 | return FALSE; |
6cdc0ccc | 8088 | } |
1e2f5b6e AM |
8089 | sec->contents = loc; |
8090 | sec->flags |= (SEC_IN_MEMORY | SEC_HAS_CONTENTS); | |
8091 | } | |
8092 | ||
8093 | elf_section_data (sec)->relocs = relstart; | |
8094 | ||
3f764659 | 8095 | new_contents = sec->contents; |
3f764659 JJ |
8096 | if (add_aux_fields) |
8097 | { | |
8098 | new_contents = bfd_malloc (sec->size + cnt_16b * 8); | |
8099 | if (new_contents == NULL) | |
8100 | return FALSE; | |
51aecdc5 | 8101 | need_pad = NULL; |
3f764659 | 8102 | } |
b4f4e59f AM |
8103 | wptr = new_contents; |
8104 | rptr = sec->contents; | |
1e2f5b6e | 8105 | write_rel = relstart; |
51aecdc5 | 8106 | for (rel = relstart; rel < relend; ) |
1e2f5b6e | 8107 | { |
50bc7936 AM |
8108 | unsigned long r_symndx; |
8109 | asection *sym_sec; | |
8110 | struct elf_link_hash_entry *h; | |
51aecdc5 | 8111 | struct ppc_link_hash_entry *fdh = NULL; |
50bc7936 | 8112 | Elf_Internal_Sym *sym; |
51aecdc5 AM |
8113 | long opd_ent_size; |
8114 | Elf_Internal_Rela *next_rel; | |
8115 | bfd_boolean skip; | |
50bc7936 AM |
8116 | |
8117 | r_symndx = ELF64_R_SYM (rel->r_info); | |
8118 | if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, | |
d37c89e5 | 8119 | r_symndx, ibfd)) |
50bc7936 AM |
8120 | goto error_ret; |
8121 | ||
51aecdc5 AM |
8122 | next_rel = rel + 2; |
8123 | if (next_rel + 1 == relend | |
8124 | || (next_rel + 2 < relend | |
8125 | && ELF64_R_TYPE (next_rel[2].r_info) == R_PPC64_TOC)) | |
8126 | ++next_rel; | |
8127 | ||
8128 | /* See if the .opd entry is full 24 byte or | |
8129 | 16 byte (with fd_aux entry overlapped with next | |
8130 | fd_func). */ | |
8131 | opd_ent_size = 24; | |
8132 | if (next_rel == relend) | |
1e2f5b6e | 8133 | { |
51aecdc5 | 8134 | if (sec->size == rel->r_offset + 16) |
3f764659 | 8135 | opd_ent_size = 16; |
51aecdc5 AM |
8136 | } |
8137 | else if (next_rel->r_offset == rel->r_offset + 16) | |
8138 | opd_ent_size = 16; | |
3f764659 | 8139 | |
51aecdc5 AM |
8140 | if (h != NULL |
8141 | && h->root.root.string[0] == '.') | |
8142 | { | |
8c5b4e52 AM |
8143 | fdh = ((struct ppc_link_hash_entry *) h)->oh; |
8144 | if (fdh != NULL) | |
8145 | { | |
8146 | fdh = ppc_follow_link (fdh); | |
8147 | if (fdh->elf.root.type != bfd_link_hash_defined | |
8148 | && fdh->elf.root.type != bfd_link_hash_defweak) | |
8149 | fdh = NULL; | |
8150 | } | |
51aecdc5 | 8151 | } |
1e2f5b6e | 8152 | |
51aecdc5 AM |
8153 | skip = (sym_sec->owner != ibfd |
8154 | || sym_sec->output_section == bfd_abs_section_ptr); | |
8155 | if (skip) | |
8156 | { | |
8157 | if (fdh != NULL && sym_sec->owner == ibfd) | |
a4aa0fb7 | 8158 | { |
51aecdc5 AM |
8159 | /* Arrange for the function descriptor sym |
8160 | to be dropped. */ | |
8161 | fdh->elf.root.u.def.value = 0; | |
8162 | fdh->elf.root.u.def.section = sym_sec; | |
a4aa0fb7 | 8163 | } |
51aecdc5 | 8164 | opd->adjust[OPD_NDX (rel->r_offset)] = -1; |
1e2f5b6e | 8165 | |
0e1862bb | 8166 | if (NO_OPD_RELOCS || bfd_link_relocatable (info)) |
51aecdc5 AM |
8167 | rel = next_rel; |
8168 | else | |
8169 | while (1) | |
8170 | { | |
8171 | if (!dec_dynrel_count (rel->r_info, sec, info, | |
8172 | NULL, h, sym)) | |
8173 | goto error_ret; | |
754021d0 | 8174 | |
51aecdc5 AM |
8175 | if (++rel == next_rel) |
8176 | break; | |
1e2f5b6e | 8177 | |
51aecdc5 AM |
8178 | r_symndx = ELF64_R_SYM (rel->r_info); |
8179 | if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, | |
8180 | r_symndx, ibfd)) | |
8181 | goto error_ret; | |
8182 | } | |
50bc7936 AM |
8183 | } |
8184 | else | |
1e2f5b6e | 8185 | { |
51aecdc5 AM |
8186 | /* We'll be keeping this opd entry. */ |
8187 | long adjust; | |
8188 | ||
8189 | if (fdh != NULL) | |
8190 | { | |
8191 | /* Redefine the function descriptor symbol to | |
8192 | this location in the opd section. It is | |
8193 | necessary to update the value here rather | |
8194 | than using an array of adjustments as we do | |
8195 | for local symbols, because various places | |
8196 | in the generic ELF code use the value | |
8197 | stored in u.def.value. */ | |
8198 | fdh->elf.root.u.def.value = wptr - new_contents; | |
8199 | fdh->adjust_done = 1; | |
8200 | } | |
8201 | ||
8202 | /* Local syms are a bit tricky. We could | |
8203 | tweak them as they can be cached, but | |
8204 | we'd need to look through the local syms | |
8205 | for the function descriptor sym which we | |
8206 | don't have at the moment. So keep an | |
8207 | array of adjustments. */ | |
8208 | adjust = (wptr - new_contents) - (rptr - sec->contents); | |
8209 | opd->adjust[OPD_NDX (rel->r_offset)] = adjust; | |
8210 | ||
8211 | if (wptr != rptr) | |
8212 | memcpy (wptr, rptr, opd_ent_size); | |
8213 | wptr += opd_ent_size; | |
8214 | if (add_aux_fields && opd_ent_size == 16) | |
8215 | { | |
8216 | memset (wptr, '\0', 8); | |
8217 | wptr += 8; | |
8218 | } | |
8219 | ||
50bc7936 | 8220 | /* We need to adjust any reloc offsets to point to the |
51aecdc5 AM |
8221 | new opd entries. */ |
8222 | for ( ; rel != next_rel; ++rel) | |
8223 | { | |
8224 | rel->r_offset += adjust; | |
8225 | if (write_rel != rel) | |
8226 | memcpy (write_rel, rel, sizeof (*rel)); | |
8227 | ++write_rel; | |
8228 | } | |
1e2f5b6e | 8229 | } |
51aecdc5 AM |
8230 | |
8231 | rptr += opd_ent_size; | |
1e2f5b6e AM |
8232 | } |
8233 | ||
3f764659 | 8234 | sec->size = wptr - new_contents; |
1e2f5b6e | 8235 | sec->reloc_count = write_rel - relstart; |
3f764659 JJ |
8236 | if (add_aux_fields) |
8237 | { | |
8238 | free (sec->contents); | |
8239 | sec->contents = new_contents; | |
8240 | } | |
8241 | ||
05bf9422 | 8242 | /* Fudge the header size too, as this is used later in |
cdcf6e38 | 8243 | elf_bfd_final_link if we are emitting relocs. */ |
d4730f92 BS |
8244 | rel_hdr = _bfd_elf_single_rel_hdr (sec); |
8245 | rel_hdr->sh_size = sec->reloc_count * rel_hdr->sh_entsize; | |
754021d0 | 8246 | some_edited = TRUE; |
1e2f5b6e | 8247 | } |
6cdc0ccc | 8248 | else if (elf_section_data (sec)->relocs != relstart) |
1e2f5b6e | 8249 | free (relstart); |
6cdc0ccc | 8250 | |
411e1bfb AM |
8251 | if (local_syms != NULL |
8252 | && symtab_hdr->contents != (unsigned char *) local_syms) | |
8253 | { | |
8254 | if (!info->keep_memory) | |
8255 | free (local_syms); | |
8256 | else | |
8257 | symtab_hdr->contents = (unsigned char *) local_syms; | |
8258 | } | |
8259 | } | |
8260 | ||
754021d0 AM |
8261 | if (some_edited) |
8262 | elf_link_hash_traverse (elf_hash_table (info), adjust_opd_syms, NULL); | |
8263 | ||
3f764659 JJ |
8264 | /* If we are doing a final link and the last .opd entry is just 16 byte |
8265 | long, add a 8 byte padding after it. */ | |
0e1862bb | 8266 | if (need_pad != NULL && !bfd_link_relocatable (info)) |
3f764659 JJ |
8267 | { |
8268 | bfd_byte *p; | |
8269 | ||
8270 | if ((need_pad->flags & SEC_IN_MEMORY) == 0) | |
8271 | { | |
8272 | BFD_ASSERT (need_pad->size > 0); | |
8273 | ||
8274 | p = bfd_malloc (need_pad->size + 8); | |
8275 | if (p == NULL) | |
8276 | return FALSE; | |
699733f6 | 8277 | |
3f764659 JJ |
8278 | if (! bfd_get_section_contents (need_pad->owner, need_pad, |
8279 | p, 0, need_pad->size)) | |
8280 | return FALSE; | |
8281 | ||
8282 | need_pad->contents = p; | |
8283 | need_pad->flags |= (SEC_IN_MEMORY | SEC_HAS_CONTENTS); | |
8284 | } | |
8285 | else | |
8286 | { | |
8287 | p = bfd_realloc (need_pad->contents, need_pad->size + 8); | |
8288 | if (p == NULL) | |
8289 | return FALSE; | |
8290 | ||
8291 | need_pad->contents = p; | |
8292 | } | |
8293 | ||
8294 | memset (need_pad->contents + need_pad->size, 0, 8); | |
8295 | need_pad->size += 8; | |
8296 | } | |
8297 | ||
411e1bfb AM |
8298 | return TRUE; |
8299 | } | |
8300 | ||
3e04d765 AM |
8301 | /* Analyze inline PLT call relocations to see whether calls to locally |
8302 | defined functions can be converted to direct calls. */ | |
8303 | ||
8304 | bfd_boolean | |
8305 | ppc64_elf_inline_plt (struct bfd_link_info *info) | |
8306 | { | |
8307 | struct ppc_link_hash_table *htab; | |
8308 | bfd *ibfd; | |
8309 | asection *sec; | |
8310 | bfd_vma low_vma, high_vma, limit; | |
8311 | ||
8312 | htab = ppc_hash_table (info); | |
8313 | if (htab == NULL) | |
8314 | return FALSE; | |
8315 | ||
8316 | /* A bl insn can reach -0x2000000 to 0x1fffffc. The limit is | |
8317 | reduced somewhat to cater for possible stubs that might be added | |
8318 | between the call and its destination. */ | |
8319 | if (htab->params->group_size < 0) | |
8320 | { | |
8321 | limit = -htab->params->group_size; | |
8322 | if (limit == 1) | |
8323 | limit = 0x1e00000; | |
8324 | } | |
8325 | else | |
8326 | { | |
8327 | limit = htab->params->group_size; | |
8328 | if (limit == 1) | |
8329 | limit = 0x1c00000; | |
8330 | } | |
8331 | ||
8332 | low_vma = -1; | |
8333 | high_vma = 0; | |
8334 | for (sec = info->output_bfd->sections; sec != NULL; sec = sec->next) | |
8335 | if ((sec->flags & (SEC_ALLOC | SEC_CODE)) == (SEC_ALLOC | SEC_CODE)) | |
8336 | { | |
8337 | if (low_vma > sec->vma) | |
8338 | low_vma = sec->vma; | |
8339 | if (high_vma < sec->vma + sec->size) | |
8340 | high_vma = sec->vma + sec->size; | |
8341 | } | |
8342 | ||
8343 | /* If a "bl" can reach anywhere in local code sections, then we can | |
8344 | convert all inline PLT sequences to direct calls when the symbol | |
8345 | is local. */ | |
8346 | if (high_vma - low_vma < limit) | |
8347 | { | |
8348 | htab->can_convert_all_inline_plt = 1; | |
8349 | return TRUE; | |
8350 | } | |
8351 | ||
8352 | /* Otherwise, go looking through relocs for cases where a direct | |
8353 | call won't reach. Mark the symbol on any such reloc to disable | |
8354 | the optimization and keep the PLT entry as it seems likely that | |
8355 | this will be better than creating trampolines. Note that this | |
8356 | will disable the optimization for all inline PLT calls to a | |
8357 | particular symbol, not just those that won't reach. The | |
8358 | difficulty in doing a more precise optimization is that the | |
8359 | linker needs to make a decision depending on whether a | |
8360 | particular R_PPC64_PLTCALL insn can be turned into a direct | |
8361 | call, for each of the R_PPC64_PLTSEQ and R_PPC64_PLT16* insns in | |
8362 | the sequence, and there is nothing that ties those relocs | |
8363 | together except their symbol. */ | |
8364 | ||
8365 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next) | |
8366 | { | |
8367 | Elf_Internal_Shdr *symtab_hdr; | |
8368 | Elf_Internal_Sym *local_syms; | |
8369 | ||
8370 | if (!is_ppc64_elf (ibfd)) | |
8371 | continue; | |
8372 | ||
8373 | local_syms = NULL; | |
8374 | symtab_hdr = &elf_symtab_hdr (ibfd); | |
8375 | ||
8376 | for (sec = ibfd->sections; sec != NULL; sec = sec->next) | |
8377 | if (ppc64_elf_section_data (sec)->has_pltcall | |
8378 | && !bfd_is_abs_section (sec->output_section)) | |
8379 | { | |
8380 | Elf_Internal_Rela *relstart, *rel, *relend; | |
8381 | ||
8382 | /* Read the relocations. */ | |
8383 | relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL, | |
8384 | info->keep_memory); | |
8385 | if (relstart == NULL) | |
8386 | return FALSE; | |
8387 | ||
8388 | relend = relstart + sec->reloc_count; | |
8389 | for (rel = relstart; rel < relend; ) | |
8390 | { | |
8391 | enum elf_ppc64_reloc_type r_type; | |
8392 | unsigned long r_symndx; | |
8393 | asection *sym_sec; | |
8394 | struct elf_link_hash_entry *h; | |
8395 | Elf_Internal_Sym *sym; | |
8396 | unsigned char *tls_maskp; | |
8397 | ||
8398 | r_type = ELF64_R_TYPE (rel->r_info); | |
8399 | if (r_type != R_PPC64_PLTCALL) | |
8400 | continue; | |
8401 | ||
8402 | r_symndx = ELF64_R_SYM (rel->r_info); | |
8403 | if (!get_sym_h (&h, &sym, &sym_sec, &tls_maskp, &local_syms, | |
8404 | r_symndx, ibfd)) | |
8405 | { | |
8406 | if (elf_section_data (sec)->relocs != relstart) | |
8407 | free (relstart); | |
8408 | if (local_syms != NULL | |
8409 | && symtab_hdr->contents != (unsigned char *) local_syms) | |
8410 | free (local_syms); | |
8411 | return FALSE; | |
8412 | } | |
8413 | ||
8414 | if (sym_sec != NULL && sym_sec->output_section != NULL) | |
8415 | { | |
8416 | bfd_vma from, to; | |
8417 | if (h != NULL) | |
8418 | to = h->root.u.def.value; | |
8419 | else | |
8420 | to = sym->st_value; | |
8421 | to += (rel->r_addend | |
8422 | + sym_sec->output_offset | |
8423 | + sym_sec->output_section->vma); | |
8424 | from = (rel->r_offset | |
8425 | + sec->output_offset | |
8426 | + sec->output_section->vma); | |
8427 | if (to - from + limit < 2 * limit) | |
8428 | *tls_maskp &= ~PLT_KEEP; | |
8429 | } | |
8430 | } | |
8431 | if (elf_section_data (sec)->relocs != relstart) | |
8432 | free (relstart); | |
8433 | } | |
8434 | ||
8435 | if (local_syms != NULL | |
8436 | && symtab_hdr->contents != (unsigned char *) local_syms) | |
8437 | { | |
8438 | if (!info->keep_memory) | |
8439 | free (local_syms); | |
8440 | else | |
8441 | symtab_hdr->contents = (unsigned char *) local_syms; | |
8442 | } | |
8443 | } | |
8444 | ||
8445 | return TRUE; | |
8446 | } | |
8447 | ||
e1918d23 | 8448 | /* Set htab->tls_get_addr and call the generic ELF tls_setup function. */ |
411e1bfb | 8449 | |
e1918d23 | 8450 | asection * |
e7d1c40c | 8451 | ppc64_elf_tls_setup (struct bfd_link_info *info) |
411e1bfb | 8452 | { |
411e1bfb AM |
8453 | struct ppc_link_hash_table *htab; |
8454 | ||
411e1bfb | 8455 | htab = ppc_hash_table (info); |
4dfe6ac6 NC |
8456 | if (htab == NULL) |
8457 | return NULL; | |
8458 | ||
ee67d69a AM |
8459 | if (abiversion (info->output_bfd) == 1) |
8460 | htab->opd_abi = 1; | |
8461 | ||
e7d1c40c | 8462 | if (htab->params->no_multi_toc) |
33c0ec9d AM |
8463 | htab->do_multi_toc = 0; |
8464 | else if (!htab->do_multi_toc) | |
e7d1c40c | 8465 | htab->params->no_multi_toc = 1; |
33c0ec9d | 8466 | |
8b5f1ed8 AM |
8467 | /* Default to --no-plt-localentry, as this option can cause problems |
8468 | with symbol interposition. For example, glibc libpthread.so and | |
8469 | libc.so duplicate many pthread symbols, with a fallback | |
8470 | implementation in libc.so. In some cases the fallback does more | |
8471 | work than the pthread implementation. __pthread_condattr_destroy | |
8472 | is one such symbol: the libpthread.so implementation is | |
8473 | localentry:0 while the libc.so implementation is localentry:8. | |
8474 | An app that "cleverly" uses dlopen to only load necessary | |
8475 | libraries at runtime may omit loading libpthread.so when not | |
8476 | running multi-threaded, which then results in the libc.so | |
8477 | fallback symbols being used and ld.so complaining. Now there | |
8478 | are workarounds in ld (see non_zero_localentry) to detect the | |
8479 | pthread situation, but that may not be the only case where | |
8480 | --plt-localentry can cause trouble. */ | |
f378ab09 | 8481 | if (htab->params->plt_localentry0 < 0) |
8b5f1ed8 | 8482 | htab->params->plt_localentry0 = 0; |
d44c746a AM |
8483 | if (htab->params->plt_localentry0 |
8484 | && elf_link_hash_lookup (&htab->elf, "GLIBC_2.26", | |
8485 | FALSE, FALSE, FALSE) == NULL) | |
cf97bcb0 AM |
8486 | _bfd_error_handler |
8487 | (_("warning: --plt-localentry is especially dangerous without " | |
8488 | "ld.so support to detect ABI violations")); | |
f378ab09 | 8489 | |
3a71aa26 AM |
8490 | htab->tls_get_addr = ((struct ppc_link_hash_entry *) |
8491 | elf_link_hash_lookup (&htab->elf, ".__tls_get_addr", | |
8492 | FALSE, FALSE, TRUE)); | |
a7f2871e AM |
8493 | /* Move dynamic linking info to the function descriptor sym. */ |
8494 | if (htab->tls_get_addr != NULL) | |
8495 | func_desc_adjust (&htab->tls_get_addr->elf, info); | |
3a71aa26 AM |
8496 | htab->tls_get_addr_fd = ((struct ppc_link_hash_entry *) |
8497 | elf_link_hash_lookup (&htab->elf, "__tls_get_addr", | |
8498 | FALSE, FALSE, TRUE)); | |
7c9cf415 | 8499 | if (htab->params->tls_get_addr_opt) |
a7f2871e AM |
8500 | { |
8501 | struct elf_link_hash_entry *opt, *opt_fd, *tga, *tga_fd; | |
8502 | ||
8503 | opt = elf_link_hash_lookup (&htab->elf, ".__tls_get_addr_opt", | |
8504 | FALSE, FALSE, TRUE); | |
8505 | if (opt != NULL) | |
8506 | func_desc_adjust (opt, info); | |
8507 | opt_fd = elf_link_hash_lookup (&htab->elf, "__tls_get_addr_opt", | |
8508 | FALSE, FALSE, TRUE); | |
8509 | if (opt_fd != NULL | |
8510 | && (opt_fd->root.type == bfd_link_hash_defined | |
8511 | || opt_fd->root.type == bfd_link_hash_defweak)) | |
8512 | { | |
8513 | /* If glibc supports an optimized __tls_get_addr call stub, | |
8514 | signalled by the presence of __tls_get_addr_opt, and we'll | |
8515 | be calling __tls_get_addr via a plt call stub, then | |
8516 | make __tls_get_addr point to __tls_get_addr_opt. */ | |
8517 | tga_fd = &htab->tls_get_addr_fd->elf; | |
8518 | if (htab->elf.dynamic_sections_created | |
8519 | && tga_fd != NULL | |
8520 | && (tga_fd->type == STT_FUNC | |
8521 | || tga_fd->needs_plt) | |
8522 | && !(SYMBOL_CALLS_LOCAL (info, tga_fd) | |
21d68fcd | 8523 | || UNDEFWEAK_NO_DYNAMIC_RELOC (info, tga_fd))) |
a7f2871e AM |
8524 | { |
8525 | struct plt_entry *ent; | |
8526 | ||
8527 | for (ent = tga_fd->plt.plist; ent != NULL; ent = ent->next) | |
8528 | if (ent->plt.refcount > 0) | |
8529 | break; | |
8530 | if (ent != NULL) | |
8531 | { | |
8532 | tga_fd->root.type = bfd_link_hash_indirect; | |
8533 | tga_fd->root.u.i.link = &opt_fd->root; | |
8534 | ppc64_elf_copy_indirect_symbol (info, opt_fd, tga_fd); | |
b531344c | 8535 | opt_fd->mark = 1; |
a7f2871e AM |
8536 | if (opt_fd->dynindx != -1) |
8537 | { | |
8538 | /* Use __tls_get_addr_opt in dynamic relocations. */ | |
8539 | opt_fd->dynindx = -1; | |
8540 | _bfd_elf_strtab_delref (elf_hash_table (info)->dynstr, | |
8541 | opt_fd->dynstr_index); | |
8542 | if (!bfd_elf_link_record_dynamic_symbol (info, opt_fd)) | |
854b41e7 | 8543 | return NULL; |
a7f2871e AM |
8544 | } |
8545 | htab->tls_get_addr_fd = (struct ppc_link_hash_entry *) opt_fd; | |
8546 | tga = &htab->tls_get_addr->elf; | |
8547 | if (opt != NULL && tga != NULL) | |
8548 | { | |
8549 | tga->root.type = bfd_link_hash_indirect; | |
8550 | tga->root.u.i.link = &opt->root; | |
8551 | ppc64_elf_copy_indirect_symbol (info, opt, tga); | |
b531344c | 8552 | opt->mark = 1; |
a7f2871e AM |
8553 | _bfd_elf_link_hash_hide_symbol (info, opt, |
8554 | tga->forced_local); | |
8555 | htab->tls_get_addr = (struct ppc_link_hash_entry *) opt; | |
8556 | } | |
8557 | htab->tls_get_addr_fd->oh = htab->tls_get_addr; | |
8558 | htab->tls_get_addr_fd->is_func_descriptor = 1; | |
8559 | if (htab->tls_get_addr != NULL) | |
8560 | { | |
8561 | htab->tls_get_addr->oh = htab->tls_get_addr_fd; | |
8562 | htab->tls_get_addr->is_func = 1; | |
8563 | } | |
8564 | } | |
8565 | } | |
8566 | } | |
7c9cf415 AM |
8567 | else if (htab->params->tls_get_addr_opt < 0) |
8568 | htab->params->tls_get_addr_opt = 0; | |
a7f2871e | 8569 | } |
33c0ec9d | 8570 | return _bfd_elf_tls_setup (info->output_bfd, info); |
3a71aa26 | 8571 | } |
8387904d | 8572 | |
3a71aa26 AM |
8573 | /* Return TRUE iff REL is a branch reloc with a global symbol matching |
8574 | HASH1 or HASH2. */ | |
8387904d | 8575 | |
3a71aa26 AM |
8576 | static bfd_boolean |
8577 | branch_reloc_hash_match (const bfd *ibfd, | |
8578 | const Elf_Internal_Rela *rel, | |
8579 | const struct ppc_link_hash_entry *hash1, | |
8580 | const struct ppc_link_hash_entry *hash2) | |
8581 | { | |
8582 | Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (ibfd); | |
8583 | enum elf_ppc64_reloc_type r_type = ELF64_R_TYPE (rel->r_info); | |
8584 | unsigned int r_symndx = ELF64_R_SYM (rel->r_info); | |
8585 | ||
e054468f | 8586 | if (r_symndx >= symtab_hdr->sh_info && is_branch_reloc (r_type)) |
8387904d | 8587 | { |
3a71aa26 AM |
8588 | struct elf_link_hash_entry **sym_hashes = elf_sym_hashes (ibfd); |
8589 | struct elf_link_hash_entry *h; | |
8387904d | 8590 | |
3a71aa26 | 8591 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; |
b31867b6 | 8592 | h = elf_follow_link (h); |
3a71aa26 AM |
8593 | if (h == &hash1->elf || h == &hash2->elf) |
8594 | return TRUE; | |
a48ebf4d | 8595 | } |
3a71aa26 | 8596 | return FALSE; |
951fd09b | 8597 | } |
411e1bfb | 8598 | |
951fd09b AM |
8599 | /* Run through all the TLS relocs looking for optimization |
8600 | opportunities. The linker has been hacked (see ppc64elf.em) to do | |
8601 | a preliminary section layout so that we know the TLS segment | |
8602 | offsets. We can't optimize earlier because some optimizations need | |
8603 | to know the tp offset, and we need to optimize before allocating | |
8604 | dynamic relocations. */ | |
8605 | ||
8606 | bfd_boolean | |
33c0ec9d | 8607 | ppc64_elf_tls_optimize (struct bfd_link_info *info) |
951fd09b AM |
8608 | { |
8609 | bfd *ibfd; | |
8610 | asection *sec; | |
8611 | struct ppc_link_hash_table *htab; | |
663a1470 | 8612 | unsigned char *toc_ref; |
102890f0 | 8613 | int pass; |
951fd09b | 8614 | |
3cbc1e5e | 8615 | if (!bfd_link_executable (info)) |
411e1bfb AM |
8616 | return TRUE; |
8617 | ||
951fd09b | 8618 | htab = ppc_hash_table (info); |
4dfe6ac6 NC |
8619 | if (htab == NULL) |
8620 | return FALSE; | |
8621 | ||
663a1470 AM |
8622 | /* Make two passes over the relocs. On the first pass, mark toc |
8623 | entries involved with tls relocs, and check that tls relocs | |
8624 | involved in setting up a tls_get_addr call are indeed followed by | |
8625 | such a call. If they are not, we can't do any tls optimization. | |
8626 | On the second pass twiddle tls_mask flags to notify | |
8627 | relocate_section that optimization can be done, and adjust got | |
8628 | and plt refcounts. */ | |
8629 | toc_ref = NULL; | |
8630 | for (pass = 0; pass < 2; ++pass) | |
c72f2fb2 | 8631 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next) |
663a1470 AM |
8632 | { |
8633 | Elf_Internal_Sym *locsyms = NULL; | |
8634 | asection *toc = bfd_get_section_by_name (ibfd, ".toc"); | |
8635 | ||
102890f0 AM |
8636 | for (sec = ibfd->sections; sec != NULL; sec = sec->next) |
8637 | if (sec->has_tls_reloc && !bfd_is_abs_section (sec->output_section)) | |
8638 | { | |
8639 | Elf_Internal_Rela *relstart, *rel, *relend; | |
663a1470 | 8640 | bfd_boolean found_tls_get_addr_arg = 0; |
411e1bfb | 8641 | |
102890f0 AM |
8642 | /* Read the relocations. */ |
8643 | relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL, | |
8644 | info->keep_memory); | |
8645 | if (relstart == NULL) | |
2915c55b JK |
8646 | { |
8647 | free (toc_ref); | |
8648 | return FALSE; | |
8649 | } | |
411e1bfb | 8650 | |
102890f0 AM |
8651 | relend = relstart + sec->reloc_count; |
8652 | for (rel = relstart; rel < relend; rel++) | |
8653 | { | |
8654 | enum elf_ppc64_reloc_type r_type; | |
8655 | unsigned long r_symndx; | |
8656 | struct elf_link_hash_entry *h; | |
8657 | Elf_Internal_Sym *sym; | |
8658 | asection *sym_sec; | |
f961d9dd AM |
8659 | unsigned char *tls_mask; |
8660 | unsigned char tls_set, tls_clear, tls_type = 0; | |
102890f0 AM |
8661 | bfd_vma value; |
8662 | bfd_boolean ok_tprel, is_local; | |
8663 | long toc_ref_index = 0; | |
8664 | int expecting_tls_get_addr = 0; | |
663a1470 | 8665 | bfd_boolean ret = FALSE; |
411e1bfb | 8666 | |
102890f0 AM |
8667 | r_symndx = ELF64_R_SYM (rel->r_info); |
8668 | if (!get_sym_h (&h, &sym, &sym_sec, &tls_mask, &locsyms, | |
8669 | r_symndx, ibfd)) | |
8670 | { | |
8671 | err_free_rel: | |
8672 | if (elf_section_data (sec)->relocs != relstart) | |
8673 | free (relstart); | |
8674 | if (toc_ref != NULL) | |
8675 | free (toc_ref); | |
8676 | if (locsyms != NULL | |
0ffa91dd | 8677 | && (elf_symtab_hdr (ibfd).contents |
102890f0 AM |
8678 | != (unsigned char *) locsyms)) |
8679 | free (locsyms); | |
663a1470 | 8680 | return ret; |
102890f0 | 8681 | } |
411e1bfb | 8682 | |
102890f0 AM |
8683 | if (h != NULL) |
8684 | { | |
766bc656 AM |
8685 | if (h->root.type == bfd_link_hash_defined |
8686 | || h->root.type == bfd_link_hash_defweak) | |
8687 | value = h->root.u.def.value; | |
8688 | else if (h->root.type == bfd_link_hash_undefweak) | |
8689 | value = 0; | |
8690 | else | |
663a1470 AM |
8691 | { |
8692 | found_tls_get_addr_arg = 0; | |
8693 | continue; | |
8694 | } | |
102890f0 AM |
8695 | } |
8696 | else | |
8697 | /* Symbols referenced by TLS relocs must be of type | |
8698 | STT_TLS. So no need for .opd local sym adjust. */ | |
8699 | value = sym->st_value; | |
8700 | ||
8701 | ok_tprel = FALSE; | |
8702 | is_local = FALSE; | |
8703 | if (h == NULL | |
8704 | || !h->def_dynamic) | |
8705 | { | |
8706 | is_local = TRUE; | |
766bc656 AM |
8707 | if (h != NULL |
8708 | && h->root.type == bfd_link_hash_undefweak) | |
8709 | ok_tprel = TRUE; | |
c27b8c2a AM |
8710 | else if (sym_sec != NULL |
8711 | && sym_sec->output_section != NULL) | |
766bc656 AM |
8712 | { |
8713 | value += sym_sec->output_offset; | |
8714 | value += sym_sec->output_section->vma; | |
8715 | value -= htab->elf.tls_sec->vma; | |
8716 | ok_tprel = (value + TP_OFFSET + ((bfd_vma) 1 << 31) | |
8717 | < (bfd_vma) 1 << 32); | |
8718 | } | |
102890f0 | 8719 | } |
951fd09b | 8720 | |
102890f0 | 8721 | r_type = ELF64_R_TYPE (rel->r_info); |
663a1470 AM |
8722 | /* If this section has old-style __tls_get_addr calls |
8723 | without marker relocs, then check that each | |
8724 | __tls_get_addr call reloc is preceded by a reloc | |
8725 | that conceivably belongs to the __tls_get_addr arg | |
8726 | setup insn. If we don't find matching arg setup | |
8727 | relocs, don't do any tls optimization. */ | |
8728 | if (pass == 0 | |
8729 | && sec->has_tls_get_addr_call | |
8730 | && h != NULL | |
8731 | && (h == &htab->tls_get_addr->elf | |
8732 | || h == &htab->tls_get_addr_fd->elf) | |
8733 | && !found_tls_get_addr_arg | |
8734 | && is_branch_reloc (r_type)) | |
8735 | { | |
25f53a85 | 8736 | info->callbacks->minfo (_("%H __tls_get_addr lost arg, " |
663a1470 AM |
8737 | "TLS optimization disabled\n"), |
8738 | ibfd, sec, rel->r_offset); | |
8739 | ret = TRUE; | |
8740 | goto err_free_rel; | |
8741 | } | |
8742 | ||
8743 | found_tls_get_addr_arg = 0; | |
102890f0 AM |
8744 | switch (r_type) |
8745 | { | |
8746 | case R_PPC64_GOT_TLSLD16: | |
8747 | case R_PPC64_GOT_TLSLD16_LO: | |
8748 | expecting_tls_get_addr = 1; | |
663a1470 | 8749 | found_tls_get_addr_arg = 1; |
1a0670f3 | 8750 | /* Fall through. */ |
102890f0 AM |
8751 | |
8752 | case R_PPC64_GOT_TLSLD16_HI: | |
8753 | case R_PPC64_GOT_TLSLD16_HA: | |
8754 | /* These relocs should never be against a symbol | |
8755 | defined in a shared lib. Leave them alone if | |
8756 | that turns out to be the case. */ | |
8757 | if (!is_local) | |
8758 | continue; | |
411e1bfb | 8759 | |
102890f0 | 8760 | /* LD -> LE */ |
411e1bfb | 8761 | tls_set = 0; |
102890f0 AM |
8762 | tls_clear = TLS_LD; |
8763 | tls_type = TLS_TLS | TLS_LD; | |
8764 | break; | |
411e1bfb | 8765 | |
102890f0 AM |
8766 | case R_PPC64_GOT_TLSGD16: |
8767 | case R_PPC64_GOT_TLSGD16_LO: | |
8768 | expecting_tls_get_addr = 1; | |
663a1470 | 8769 | found_tls_get_addr_arg = 1; |
1a0670f3 | 8770 | /* Fall through. */ |
102890f0 AM |
8771 | |
8772 | case R_PPC64_GOT_TLSGD16_HI: | |
8773 | case R_PPC64_GOT_TLSGD16_HA: | |
8774 | if (ok_tprel) | |
8775 | /* GD -> LE */ | |
411e1bfb | 8776 | tls_set = 0; |
102890f0 AM |
8777 | else |
8778 | /* GD -> IE */ | |
8779 | tls_set = TLS_TLS | TLS_TPRELGD; | |
8780 | tls_clear = TLS_GD; | |
8781 | tls_type = TLS_TLS | TLS_GD; | |
8782 | break; | |
8783 | ||
8784 | case R_PPC64_GOT_TPREL16_DS: | |
8785 | case R_PPC64_GOT_TPREL16_LO_DS: | |
8786 | case R_PPC64_GOT_TPREL16_HI: | |
8787 | case R_PPC64_GOT_TPREL16_HA: | |
8788 | if (ok_tprel) | |
8789 | { | |
8790 | /* IE -> LE */ | |
8791 | tls_set = 0; | |
8792 | tls_clear = TLS_TPREL; | |
8793 | tls_type = TLS_TLS | TLS_TPREL; | |
8794 | break; | |
8795 | } | |
411e1bfb AM |
8796 | continue; |
8797 | ||
727fc41e AM |
8798 | case R_PPC64_TLSGD: |
8799 | case R_PPC64_TLSLD: | |
23cedd1d AM |
8800 | if (rel + 1 < relend |
8801 | && is_plt_seq_reloc (ELF64_R_TYPE (rel[1].r_info))) | |
8802 | { | |
8803 | if (pass != 0 | |
8804 | && ELF64_R_TYPE (rel[1].r_info) != R_PPC64_PLTSEQ) | |
8805 | { | |
8806 | r_symndx = ELF64_R_SYM (rel[1].r_info); | |
8807 | if (!get_sym_h (&h, NULL, NULL, NULL, &locsyms, | |
8808 | r_symndx, ibfd)) | |
8809 | goto err_free_rel; | |
8810 | if (h != NULL) | |
8811 | { | |
8812 | struct plt_entry *ent = NULL; | |
8813 | ||
8814 | for (ent = h->plt.plist; | |
8815 | ent != NULL; | |
8816 | ent = ent->next) | |
8817 | if (ent->addend == rel[1].r_addend) | |
8818 | break; | |
8819 | ||
8820 | if (ent != NULL | |
8821 | && ent->plt.refcount > 0) | |
8822 | ent->plt.refcount -= 1; | |
8823 | } | |
8824 | } | |
8825 | continue; | |
8826 | } | |
663a1470 | 8827 | found_tls_get_addr_arg = 1; |
1a0670f3 | 8828 | /* Fall through. */ |
663a1470 AM |
8829 | |
8830 | case R_PPC64_TLS: | |
8831 | case R_PPC64_TOC16: | |
8832 | case R_PPC64_TOC16_LO: | |
102890f0 AM |
8833 | if (sym_sec == NULL || sym_sec != toc) |
8834 | continue; | |
8835 | ||
8836 | /* Mark this toc entry as referenced by a TLS | |
8837 | code sequence. We can do that now in the | |
8838 | case of R_PPC64_TLS, and after checking for | |
8839 | tls_get_addr for the TOC16 relocs. */ | |
8840 | if (toc_ref == NULL) | |
663a1470 AM |
8841 | toc_ref = bfd_zmalloc (toc->output_section->rawsize / 8); |
8842 | if (toc_ref == NULL) | |
8843 | goto err_free_rel; | |
8844 | ||
102890f0 AM |
8845 | if (h != NULL) |
8846 | value = h->root.u.def.value; | |
8847 | else | |
8848 | value = sym->st_value; | |
8849 | value += rel->r_addend; | |
73242275 AM |
8850 | if (value % 8 != 0) |
8851 | continue; | |
8852 | BFD_ASSERT (value < toc->size | |
8853 | && toc->output_offset % 8 == 0); | |
663a1470 | 8854 | toc_ref_index = (value + toc->output_offset) / 8; |
727fc41e AM |
8855 | if (r_type == R_PPC64_TLS |
8856 | || r_type == R_PPC64_TLSGD | |
8857 | || r_type == R_PPC64_TLSLD) | |
102890f0 AM |
8858 | { |
8859 | toc_ref[toc_ref_index] = 1; | |
8860 | continue; | |
8861 | } | |
8862 | ||
8863 | if (pass != 0 && toc_ref[toc_ref_index] == 0) | |
8864 | continue; | |
8865 | ||
8866 | tls_set = 0; | |
8867 | tls_clear = 0; | |
8868 | expecting_tls_get_addr = 2; | |
8869 | break; | |
8870 | ||
8871 | case R_PPC64_TPREL64: | |
8872 | if (pass == 0 | |
8873 | || sec != toc | |
8874 | || toc_ref == NULL | |
663a1470 | 8875 | || !toc_ref[(rel->r_offset + toc->output_offset) / 8]) |
102890f0 AM |
8876 | continue; |
8877 | if (ok_tprel) | |
8878 | { | |
8879 | /* IE -> LE */ | |
8880 | tls_set = TLS_EXPLICIT; | |
8881 | tls_clear = TLS_TPREL; | |
8882 | break; | |
8883 | } | |
8884 | continue; | |
8885 | ||
8886 | case R_PPC64_DTPMOD64: | |
8887 | if (pass == 0 | |
8888 | || sec != toc | |
8889 | || toc_ref == NULL | |
663a1470 | 8890 | || !toc_ref[(rel->r_offset + toc->output_offset) / 8]) |
102890f0 AM |
8891 | continue; |
8892 | if (rel + 1 < relend | |
8893 | && (rel[1].r_info | |
8894 | == ELF64_R_INFO (r_symndx, R_PPC64_DTPREL64)) | |
8895 | && rel[1].r_offset == rel->r_offset + 8) | |
8896 | { | |
8897 | if (ok_tprel) | |
8898 | /* GD -> LE */ | |
8899 | tls_set = TLS_EXPLICIT | TLS_GD; | |
8900 | else | |
8901 | /* GD -> IE */ | |
8902 | tls_set = TLS_EXPLICIT | TLS_GD | TLS_TPRELGD; | |
8903 | tls_clear = TLS_GD; | |
8904 | } | |
8905 | else | |
8906 | { | |
8907 | if (!is_local) | |
8908 | continue; | |
8909 | ||
8910 | /* LD -> LE */ | |
8911 | tls_set = TLS_EXPLICIT; | |
8912 | tls_clear = TLS_LD; | |
8913 | } | |
8914 | break; | |
8915 | ||
8916 | default: | |
8917 | continue; | |
8918 | } | |
8919 | ||
8920 | if (pass == 0) | |
8921 | { | |
727fc41e AM |
8922 | if (!expecting_tls_get_addr |
8923 | || !sec->has_tls_get_addr_call) | |
102890f0 AM |
8924 | continue; |
8925 | ||
3a71aa26 AM |
8926 | if (rel + 1 < relend |
8927 | && branch_reloc_hash_match (ibfd, rel + 1, | |
8928 | htab->tls_get_addr, | |
8929 | htab->tls_get_addr_fd)) | |
102890f0 | 8930 | { |
3a71aa26 | 8931 | if (expecting_tls_get_addr == 2) |
102890f0 | 8932 | { |
3a71aa26 | 8933 | /* Check for toc tls entries. */ |
f961d9dd | 8934 | unsigned char *toc_tls; |
3a71aa26 AM |
8935 | int retval; |
8936 | ||
8937 | retval = get_tls_mask (&toc_tls, NULL, NULL, | |
8938 | &locsyms, | |
8939 | rel, ibfd); | |
8940 | if (retval == 0) | |
8941 | goto err_free_rel; | |
663a1470 AM |
8942 | if (toc_tls != NULL) |
8943 | { | |
37da22e5 AM |
8944 | if ((*toc_tls & TLS_TLS) != 0 |
8945 | && ((*toc_tls & (TLS_GD | TLS_LD)) != 0)) | |
663a1470 AM |
8946 | found_tls_get_addr_arg = 1; |
8947 | if (retval > 1) | |
8948 | toc_ref[toc_ref_index] = 1; | |
8949 | } | |
102890f0 | 8950 | } |
3a71aa26 | 8951 | continue; |
102890f0 AM |
8952 | } |
8953 | ||
102890f0 AM |
8954 | /* Uh oh, we didn't find the expected call. We |
8955 | could just mark this symbol to exclude it | |
8956 | from tls optimization but it's safer to skip | |
663a1470 | 8957 | the entire optimization. */ |
695344c0 | 8958 | /* xgettext:c-format */ |
25f53a85 | 8959 | info->callbacks->minfo (_("%H arg lost __tls_get_addr, " |
663a1470 AM |
8960 | "TLS optimization disabled\n"), |
8961 | ibfd, sec, rel->r_offset); | |
8962 | ret = TRUE; | |
8963 | goto err_free_rel; | |
102890f0 AM |
8964 | } |
8965 | ||
37da22e5 AM |
8966 | /* If we don't have old-style __tls_get_addr calls |
8967 | without TLSGD/TLSLD marker relocs, and we haven't | |
8968 | found a new-style __tls_get_addr call with a | |
8969 | marker for this symbol, then we either have a | |
8970 | broken object file or an -mlongcall style | |
8971 | indirect call to __tls_get_addr without a marker. | |
8972 | Disable optimization in this case. */ | |
8973 | if ((tls_clear & (TLS_GD | TLS_LD)) != 0 | |
8974 | && (tls_set & TLS_EXPLICIT) == 0 | |
8975 | && !sec->has_tls_get_addr_call | |
8976 | && ((*tls_mask & (TLS_TLS | TLS_MARK)) | |
8977 | != (TLS_TLS | TLS_MARK))) | |
8978 | continue; | |
8979 | ||
23cedd1d | 8980 | if (expecting_tls_get_addr) |
102890f0 | 8981 | { |
23cedd1d AM |
8982 | struct plt_entry *ent = NULL; |
8983 | ||
8984 | if (htab->tls_get_addr != NULL) | |
8985 | for (ent = htab->tls_get_addr->elf.plt.plist; | |
8986 | ent != NULL; | |
8987 | ent = ent->next) | |
8988 | if (ent->addend == 0) | |
102890f0 | 8989 | break; |
411e1bfb | 8990 | |
23cedd1d AM |
8991 | if (ent == NULL && htab->tls_get_addr_fd != NULL) |
8992 | for (ent = htab->tls_get_addr_fd->elf.plt.plist; | |
8993 | ent != NULL; | |
8994 | ent = ent->next) | |
8995 | if (ent->addend == 0) | |
102890f0 | 8996 | break; |
23cedd1d AM |
8997 | |
8998 | if (ent != NULL | |
8999 | && ent->plt.refcount > 0) | |
9000 | ent->plt.refcount -= 1; | |
102890f0 | 9001 | } |
411e1bfb | 9002 | |
102890f0 | 9003 | if (tls_clear == 0) |
30038c59 AM |
9004 | continue; |
9005 | ||
102890f0 AM |
9006 | if ((tls_set & TLS_EXPLICIT) == 0) |
9007 | { | |
9008 | struct got_entry *ent; | |
411e1bfb | 9009 | |
102890f0 AM |
9010 | /* Adjust got entry for this reloc. */ |
9011 | if (h != NULL) | |
9012 | ent = h->got.glist; | |
9013 | else | |
9014 | ent = elf_local_got_ents (ibfd)[r_symndx]; | |
411e1bfb | 9015 | |
102890f0 AM |
9016 | for (; ent != NULL; ent = ent->next) |
9017 | if (ent->addend == rel->r_addend | |
9018 | && ent->owner == ibfd | |
9019 | && ent->tls_type == tls_type) | |
9020 | break; | |
9021 | if (ent == NULL) | |
9022 | abort (); | |
411e1bfb | 9023 | |
102890f0 AM |
9024 | if (tls_set == 0) |
9025 | { | |
9026 | /* We managed to get rid of a got entry. */ | |
9027 | if (ent->got.refcount > 0) | |
9028 | ent->got.refcount -= 1; | |
9029 | } | |
9030 | } | |
9031 | else | |
9032 | { | |
9033 | /* If we got rid of a DTPMOD/DTPREL reloc pair then | |
9034 | we'll lose one or two dyn relocs. */ | |
9035 | if (!dec_dynrel_count (rel->r_info, sec, info, | |
19e08130 | 9036 | NULL, h, sym)) |
102890f0 | 9037 | return FALSE; |
411e1bfb | 9038 | |
102890f0 AM |
9039 | if (tls_set == (TLS_EXPLICIT | TLS_GD)) |
9040 | { | |
9041 | if (!dec_dynrel_count ((rel + 1)->r_info, sec, info, | |
19e08130 | 9042 | NULL, h, sym)) |
102890f0 AM |
9043 | return FALSE; |
9044 | } | |
9045 | } | |
411e1bfb | 9046 | |
102890f0 AM |
9047 | *tls_mask |= tls_set; |
9048 | *tls_mask &= ~tls_clear; | |
9049 | } | |
8c1d1bb8 | 9050 | |
102890f0 AM |
9051 | if (elf_section_data (sec)->relocs != relstart) |
9052 | free (relstart); | |
9053 | } | |
411e1bfb | 9054 | |
663a1470 AM |
9055 | if (locsyms != NULL |
9056 | && (elf_symtab_hdr (ibfd).contents != (unsigned char *) locsyms)) | |
9057 | { | |
9058 | if (!info->keep_memory) | |
9059 | free (locsyms); | |
9060 | else | |
9061 | elf_symtab_hdr (ibfd).contents = (unsigned char *) locsyms; | |
9062 | } | |
9063 | } | |
411e1bfb | 9064 | |
663a1470 AM |
9065 | if (toc_ref != NULL) |
9066 | free (toc_ref); | |
9a23f96e | 9067 | htab->do_tls_opt = 1; |
b34976b6 | 9068 | return TRUE; |
1e2f5b6e | 9069 | } |
b34976b6 | 9070 | |
c5614fa4 AM |
9071 | /* Called via elf_link_hash_traverse from ppc64_elf_edit_toc to adjust |
9072 | the values of any global symbols in a toc section that has been | |
9073 | edited. Globals in toc sections should be a rarity, so this function | |
9074 | sets a flag if any are found in toc sections other than the one just | |
de194d85 | 9075 | edited, so that further hash table traversals can be avoided. */ |
c5614fa4 AM |
9076 | |
9077 | struct adjust_toc_info | |
9078 | { | |
9079 | asection *toc; | |
9080 | unsigned long *skip; | |
9081 | bfd_boolean global_toc_syms; | |
9082 | }; | |
9083 | ||
ba761f19 AM |
9084 | enum toc_skip_enum { ref_from_discarded = 1, can_optimize = 2 }; |
9085 | ||
c5614fa4 AM |
9086 | static bfd_boolean |
9087 | adjust_toc_syms (struct elf_link_hash_entry *h, void *inf) | |
9088 | { | |
9089 | struct ppc_link_hash_entry *eh; | |
9090 | struct adjust_toc_info *toc_inf = (struct adjust_toc_info *) inf; | |
854b41e7 | 9091 | unsigned long i; |
c5614fa4 | 9092 | |
c5614fa4 AM |
9093 | if (h->root.type != bfd_link_hash_defined |
9094 | && h->root.type != bfd_link_hash_defweak) | |
9095 | return TRUE; | |
9096 | ||
9097 | eh = (struct ppc_link_hash_entry *) h; | |
9098 | if (eh->adjust_done) | |
9099 | return TRUE; | |
9100 | ||
9101 | if (eh->elf.root.u.def.section == toc_inf->toc) | |
9102 | { | |
854b41e7 AM |
9103 | if (eh->elf.root.u.def.value > toc_inf->toc->rawsize) |
9104 | i = toc_inf->toc->rawsize >> 3; | |
c5614fa4 | 9105 | else |
854b41e7 AM |
9106 | i = eh->elf.root.u.def.value >> 3; |
9107 | ||
ba761f19 | 9108 | if ((toc_inf->skip[i] & (ref_from_discarded | can_optimize)) != 0) |
c5614fa4 | 9109 | { |
4eca0228 | 9110 | _bfd_error_handler |
854b41e7 AM |
9111 | (_("%s defined on removed toc entry"), eh->elf.root.root.string); |
9112 | do | |
9113 | ++i; | |
ba761f19 | 9114 | while ((toc_inf->skip[i] & (ref_from_discarded | can_optimize)) != 0); |
854b41e7 | 9115 | eh->elf.root.u.def.value = (bfd_vma) i << 3; |
c5614fa4 | 9116 | } |
854b41e7 AM |
9117 | |
9118 | eh->elf.root.u.def.value -= toc_inf->skip[i]; | |
c5614fa4 AM |
9119 | eh->adjust_done = 1; |
9120 | } | |
9121 | else if (strcmp (eh->elf.root.u.def.section->name, ".toc") == 0) | |
9122 | toc_inf->global_toc_syms = TRUE; | |
9123 | ||
9124 | return TRUE; | |
9125 | } | |
9126 | ||
39eeab25 AM |
9127 | /* Return TRUE iff INSN with a relocation of R_TYPE is one we expect |
9128 | on a _LO variety toc/got reloc. */ | |
560c8763 AM |
9129 | |
9130 | static bfd_boolean | |
39eeab25 | 9131 | ok_lo_toc_insn (unsigned int insn, enum elf_ppc64_reloc_type r_type) |
560c8763 | 9132 | { |
39eeab25 AM |
9133 | return ((insn & (0x3f << 26)) == 12u << 26 /* addic */ |
9134 | || (insn & (0x3f << 26)) == 14u << 26 /* addi */ | |
560c8763 AM |
9135 | || (insn & (0x3f << 26)) == 32u << 26 /* lwz */ |
9136 | || (insn & (0x3f << 26)) == 34u << 26 /* lbz */ | |
9137 | || (insn & (0x3f << 26)) == 36u << 26 /* stw */ | |
9138 | || (insn & (0x3f << 26)) == 38u << 26 /* stb */ | |
9139 | || (insn & (0x3f << 26)) == 40u << 26 /* lhz */ | |
9140 | || (insn & (0x3f << 26)) == 42u << 26 /* lha */ | |
9141 | || (insn & (0x3f << 26)) == 44u << 26 /* sth */ | |
9142 | || (insn & (0x3f << 26)) == 46u << 26 /* lmw */ | |
9143 | || (insn & (0x3f << 26)) == 47u << 26 /* stmw */ | |
9144 | || (insn & (0x3f << 26)) == 48u << 26 /* lfs */ | |
9145 | || (insn & (0x3f << 26)) == 50u << 26 /* lfd */ | |
9146 | || (insn & (0x3f << 26)) == 52u << 26 /* stfs */ | |
9147 | || (insn & (0x3f << 26)) == 54u << 26 /* stfd */ | |
39eeab25 AM |
9148 | || (insn & (0x3f << 26)) == 56u << 26 /* lq,lfq */ |
9149 | || ((insn & (0x3f << 26)) == 57u << 26 /* lxsd,lxssp,lfdp */ | |
9150 | /* Exclude lfqu by testing reloc. If relocs are ever | |
9151 | defined for the reduced D field in psq_lu then those | |
9152 | will need testing too. */ | |
9153 | && r_type != R_PPC64_TOC16_LO && r_type != R_PPC64_GOT16_LO) | |
9154 | || ((insn & (0x3f << 26)) == 58u << 26 /* ld,lwa */ | |
9155 | && (insn & 1) == 0) | |
9156 | || (insn & (0x3f << 26)) == 60u << 26 /* stfq */ | |
9157 | || ((insn & (0x3f << 26)) == 61u << 26 /* lxv,stx{v,sd,ssp},stfdp */ | |
9158 | /* Exclude stfqu. psq_stu as above for psq_lu. */ | |
9159 | && r_type != R_PPC64_TOC16_LO && r_type != R_PPC64_GOT16_LO) | |
9160 | || ((insn & (0x3f << 26)) == 62u << 26 /* std,stq */ | |
9161 | && (insn & 1) == 0)); | |
560c8763 AM |
9162 | } |
9163 | ||
c5614fa4 AM |
9164 | /* Examine all relocs referencing .toc sections in order to remove |
9165 | unused .toc entries. */ | |
9166 | ||
9167 | bfd_boolean | |
33c0ec9d | 9168 | ppc64_elf_edit_toc (struct bfd_link_info *info) |
c5614fa4 AM |
9169 | { |
9170 | bfd *ibfd; | |
9171 | struct adjust_toc_info toc_inf; | |
67f0cbdb | 9172 | struct ppc_link_hash_table *htab = ppc_hash_table (info); |
c5614fa4 | 9173 | |
67f0cbdb | 9174 | htab->do_toc_opt = 1; |
c5614fa4 | 9175 | toc_inf.global_toc_syms = TRUE; |
c72f2fb2 | 9176 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next) |
c5614fa4 AM |
9177 | { |
9178 | asection *toc, *sec; | |
9179 | Elf_Internal_Shdr *symtab_hdr; | |
9180 | Elf_Internal_Sym *local_syms; | |
425b145b | 9181 | Elf_Internal_Rela *relstart, *rel, *toc_relocs; |
c5614fa4 AM |
9182 | unsigned long *skip, *drop; |
9183 | unsigned char *used; | |
9184 | unsigned char *keep, last, some_unused; | |
9185 | ||
854b41e7 AM |
9186 | if (!is_ppc64_elf (ibfd)) |
9187 | continue; | |
9188 | ||
c5614fa4 AM |
9189 | toc = bfd_get_section_by_name (ibfd, ".toc"); |
9190 | if (toc == NULL | |
92b7a70f | 9191 | || toc->size == 0 |
dbaa2011 AM |
9192 | || toc->sec_info_type == SEC_INFO_TYPE_JUST_SYMS |
9193 | || discarded_section (toc)) | |
c5614fa4 AM |
9194 | continue; |
9195 | ||
425b145b | 9196 | toc_relocs = NULL; |
c5614fa4 | 9197 | local_syms = NULL; |
0ffa91dd | 9198 | symtab_hdr = &elf_symtab_hdr (ibfd); |
c5614fa4 AM |
9199 | |
9200 | /* Look at sections dropped from the final link. */ | |
9201 | skip = NULL; | |
9202 | relstart = NULL; | |
9203 | for (sec = ibfd->sections; sec != NULL; sec = sec->next) | |
9204 | { | |
9205 | if (sec->reloc_count == 0 | |
dbaa2011 | 9206 | || !discarded_section (sec) |
c5614fa4 AM |
9207 | || get_opd_info (sec) |
9208 | || (sec->flags & SEC_ALLOC) == 0 | |
9209 | || (sec->flags & SEC_DEBUGGING) != 0) | |
9210 | continue; | |
9211 | ||
9212 | relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL, FALSE); | |
9213 | if (relstart == NULL) | |
9214 | goto error_ret; | |
9215 | ||
9216 | /* Run through the relocs to see which toc entries might be | |
9217 | unused. */ | |
9218 | for (rel = relstart; rel < relstart + sec->reloc_count; ++rel) | |
9219 | { | |
9220 | enum elf_ppc64_reloc_type r_type; | |
9221 | unsigned long r_symndx; | |
9222 | asection *sym_sec; | |
9223 | struct elf_link_hash_entry *h; | |
9224 | Elf_Internal_Sym *sym; | |
9225 | bfd_vma val; | |
9226 | ||
9227 | r_type = ELF64_R_TYPE (rel->r_info); | |
9228 | switch (r_type) | |
9229 | { | |
9230 | default: | |
9231 | continue; | |
9232 | ||
9233 | case R_PPC64_TOC16: | |
9234 | case R_PPC64_TOC16_LO: | |
9235 | case R_PPC64_TOC16_HI: | |
9236 | case R_PPC64_TOC16_HA: | |
9237 | case R_PPC64_TOC16_DS: | |
9238 | case R_PPC64_TOC16_LO_DS: | |
9239 | break; | |
9240 | } | |
9241 | ||
9242 | r_symndx = ELF64_R_SYM (rel->r_info); | |
9243 | if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, | |
9244 | r_symndx, ibfd)) | |
9245 | goto error_ret; | |
9246 | ||
9247 | if (sym_sec != toc) | |
9248 | continue; | |
9249 | ||
9250 | if (h != NULL) | |
9251 | val = h->root.u.def.value; | |
9252 | else | |
9253 | val = sym->st_value; | |
9254 | val += rel->r_addend; | |
9255 | ||
9256 | if (val >= toc->size) | |
9257 | continue; | |
9258 | ||
9259 | /* Anything in the toc ought to be aligned to 8 bytes. | |
9260 | If not, don't mark as unused. */ | |
9261 | if (val & 7) | |
9262 | continue; | |
9263 | ||
9264 | if (skip == NULL) | |
9265 | { | |
854b41e7 | 9266 | skip = bfd_zmalloc (sizeof (*skip) * (toc->size + 15) / 8); |
c5614fa4 AM |
9267 | if (skip == NULL) |
9268 | goto error_ret; | |
9269 | } | |
9270 | ||
ba761f19 | 9271 | skip[val >> 3] = ref_from_discarded; |
c5614fa4 AM |
9272 | } |
9273 | ||
9274 | if (elf_section_data (sec)->relocs != relstart) | |
9275 | free (relstart); | |
9276 | } | |
9277 | ||
ba761f19 AM |
9278 | /* For largetoc loads of address constants, we can convert |
9279 | . addis rx,2,addr@got@ha | |
9280 | . ld ry,addr@got@l(rx) | |
9281 | to | |
9282 | . addis rx,2,addr@toc@ha | |
9283 | . addi ry,rx,addr@toc@l | |
9284 | when addr is within 2G of the toc pointer. This then means | |
9285 | that the word storing "addr" in the toc is no longer needed. */ | |
68ffbac6 | 9286 | |
ba761f19 AM |
9287 | if (!ppc64_elf_tdata (ibfd)->has_small_toc_reloc |
9288 | && toc->output_section->rawsize < (bfd_vma) 1 << 31 | |
9289 | && toc->reloc_count != 0) | |
9290 | { | |
9291 | /* Read toc relocs. */ | |
425b145b AM |
9292 | toc_relocs = _bfd_elf_link_read_relocs (ibfd, toc, NULL, NULL, |
9293 | info->keep_memory); | |
9294 | if (toc_relocs == NULL) | |
ba761f19 AM |
9295 | goto error_ret; |
9296 | ||
425b145b | 9297 | for (rel = toc_relocs; rel < toc_relocs + toc->reloc_count; ++rel) |
ba761f19 AM |
9298 | { |
9299 | enum elf_ppc64_reloc_type r_type; | |
9300 | unsigned long r_symndx; | |
9301 | asection *sym_sec; | |
9302 | struct elf_link_hash_entry *h; | |
9303 | Elf_Internal_Sym *sym; | |
9304 | bfd_vma val, addr; | |
9305 | ||
9306 | r_type = ELF64_R_TYPE (rel->r_info); | |
9307 | if (r_type != R_PPC64_ADDR64) | |
9308 | continue; | |
9309 | ||
9310 | r_symndx = ELF64_R_SYM (rel->r_info); | |
9311 | if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, | |
9312 | r_symndx, ibfd)) | |
9313 | goto error_ret; | |
9314 | ||
425b145b | 9315 | if (sym_sec == NULL |
c27b8c2a | 9316 | || sym_sec->output_section == NULL |
dbaa2011 | 9317 | || discarded_section (sym_sec)) |
425b145b AM |
9318 | continue; |
9319 | ||
afe397ea | 9320 | if (!SYMBOL_REFERENCES_LOCAL (info, h)) |
ba761f19 AM |
9321 | continue; |
9322 | ||
9323 | if (h != NULL) | |
bddc25c9 AM |
9324 | { |
9325 | if (h->type == STT_GNU_IFUNC) | |
9326 | continue; | |
9327 | val = h->root.u.def.value; | |
9328 | } | |
ba761f19 | 9329 | else |
bddc25c9 AM |
9330 | { |
9331 | if (ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC) | |
9332 | continue; | |
9333 | val = sym->st_value; | |
9334 | } | |
ba761f19 AM |
9335 | val += rel->r_addend; |
9336 | val += sym_sec->output_section->vma + sym_sec->output_offset; | |
9337 | ||
9338 | /* We don't yet know the exact toc pointer value, but we | |
9339 | know it will be somewhere in the toc section. Don't | |
9340 | optimize if the difference from any possible toc | |
9341 | pointer is outside [ff..f80008000, 7fff7fff]. */ | |
9342 | addr = toc->output_section->vma + TOC_BASE_OFF; | |
9343 | if (val - addr + (bfd_vma) 0x80008000 >= (bfd_vma) 1 << 32) | |
9344 | continue; | |
9345 | ||
9346 | addr = toc->output_section->vma + toc->output_section->rawsize; | |
9347 | if (val - addr + (bfd_vma) 0x80008000 >= (bfd_vma) 1 << 32) | |
9348 | continue; | |
9349 | ||
9350 | if (skip == NULL) | |
9351 | { | |
9352 | skip = bfd_zmalloc (sizeof (*skip) * (toc->size + 15) / 8); | |
9353 | if (skip == NULL) | |
9354 | goto error_ret; | |
9355 | } | |
9356 | ||
9357 | skip[rel->r_offset >> 3] | |
425b145b | 9358 | |= can_optimize | ((rel - toc_relocs) << 2); |
ba761f19 | 9359 | } |
ba761f19 AM |
9360 | } |
9361 | ||
c5614fa4 AM |
9362 | if (skip == NULL) |
9363 | continue; | |
9364 | ||
9365 | used = bfd_zmalloc (sizeof (*used) * (toc->size + 7) / 8); | |
9366 | if (used == NULL) | |
9367 | { | |
9368 | error_ret: | |
9369 | if (local_syms != NULL | |
9370 | && symtab_hdr->contents != (unsigned char *) local_syms) | |
9371 | free (local_syms); | |
9372 | if (sec != NULL | |
9373 | && relstart != NULL | |
9374 | && elf_section_data (sec)->relocs != relstart) | |
9375 | free (relstart); | |
425b145b AM |
9376 | if (toc_relocs != NULL |
9377 | && elf_section_data (toc)->relocs != toc_relocs) | |
9378 | free (toc_relocs); | |
c5614fa4 AM |
9379 | if (skip != NULL) |
9380 | free (skip); | |
9381 | return FALSE; | |
9382 | } | |
9383 | ||
30038c59 AM |
9384 | /* Now check all kept sections that might reference the toc. |
9385 | Check the toc itself last. */ | |
9386 | for (sec = (ibfd->sections == toc && toc->next ? toc->next | |
9387 | : ibfd->sections); | |
c5614fa4 | 9388 | sec != NULL; |
c5614fa4 | 9389 | sec = (sec == toc ? NULL |
c5614fa4 | 9390 | : sec->next == NULL ? toc |
30038c59 | 9391 | : sec->next == toc && toc->next ? toc->next |
c5614fa4 AM |
9392 | : sec->next)) |
9393 | { | |
9394 | int repeat; | |
9395 | ||
9396 | if (sec->reloc_count == 0 | |
dbaa2011 | 9397 | || discarded_section (sec) |
c5614fa4 AM |
9398 | || get_opd_info (sec) |
9399 | || (sec->flags & SEC_ALLOC) == 0 | |
9400 | || (sec->flags & SEC_DEBUGGING) != 0) | |
9401 | continue; | |
9402 | ||
854b41e7 AM |
9403 | relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL, |
9404 | info->keep_memory); | |
c5614fa4 | 9405 | if (relstart == NULL) |
2915c55b JK |
9406 | { |
9407 | free (used); | |
9408 | goto error_ret; | |
9409 | } | |
c5614fa4 AM |
9410 | |
9411 | /* Mark toc entries referenced as used. */ | |
c5614fa4 | 9412 | do |
d4f1ee75 AM |
9413 | { |
9414 | repeat = 0; | |
9415 | for (rel = relstart; rel < relstart + sec->reloc_count; ++rel) | |
9416 | { | |
9417 | enum elf_ppc64_reloc_type r_type; | |
9418 | unsigned long r_symndx; | |
9419 | asection *sym_sec; | |
9420 | struct elf_link_hash_entry *h; | |
9421 | Elf_Internal_Sym *sym; | |
9422 | bfd_vma val; | |
9423 | enum {no_check, check_lo, check_ha} insn_check; | |
98528052 | 9424 | |
d4f1ee75 AM |
9425 | r_type = ELF64_R_TYPE (rel->r_info); |
9426 | switch (r_type) | |
9427 | { | |
9428 | default: | |
9429 | insn_check = no_check; | |
9430 | break; | |
98528052 | 9431 | |
d4f1ee75 AM |
9432 | case R_PPC64_GOT_TLSLD16_HA: |
9433 | case R_PPC64_GOT_TLSGD16_HA: | |
9434 | case R_PPC64_GOT_TPREL16_HA: | |
9435 | case R_PPC64_GOT_DTPREL16_HA: | |
9436 | case R_PPC64_GOT16_HA: | |
9437 | case R_PPC64_TOC16_HA: | |
9438 | insn_check = check_ha; | |
9439 | break; | |
98528052 | 9440 | |
d4f1ee75 AM |
9441 | case R_PPC64_GOT_TLSLD16_LO: |
9442 | case R_PPC64_GOT_TLSGD16_LO: | |
9443 | case R_PPC64_GOT_TPREL16_LO_DS: | |
9444 | case R_PPC64_GOT_DTPREL16_LO_DS: | |
9445 | case R_PPC64_GOT16_LO: | |
9446 | case R_PPC64_GOT16_LO_DS: | |
9447 | case R_PPC64_TOC16_LO: | |
9448 | case R_PPC64_TOC16_LO_DS: | |
9449 | insn_check = check_lo; | |
9450 | break; | |
9451 | } | |
560c8763 | 9452 | |
d4f1ee75 AM |
9453 | if (insn_check != no_check) |
9454 | { | |
9455 | bfd_vma off = rel->r_offset & ~3; | |
9456 | unsigned char buf[4]; | |
9457 | unsigned int insn; | |
c5614fa4 | 9458 | |
d4f1ee75 AM |
9459 | if (!bfd_get_section_contents (ibfd, sec, buf, off, 4)) |
9460 | { | |
9461 | free (used); | |
9462 | goto error_ret; | |
9463 | } | |
9464 | insn = bfd_get_32 (ibfd, buf); | |
9465 | if (insn_check == check_lo | |
39eeab25 | 9466 | ? !ok_lo_toc_insn (insn, r_type) |
d4f1ee75 AM |
9467 | : ((insn & ((0x3f << 26) | 0x1f << 16)) |
9468 | != ((15u << 26) | (2 << 16)) /* addis rt,2,imm */)) | |
9469 | { | |
9470 | char str[12]; | |
9471 | ||
9472 | ppc64_elf_tdata (ibfd)->unexpected_toc_insn = 1; | |
9473 | sprintf (str, "%#08x", insn); | |
9474 | info->callbacks->einfo | |
695344c0 | 9475 | /* xgettext:c-format */ |
174d0a74 | 9476 | (_("%H: toc optimization is not supported for" |
cf97bcb0 | 9477 | " %s instruction\n"), |
d4f1ee75 AM |
9478 | ibfd, sec, rel->r_offset & ~3, str); |
9479 | } | |
9480 | } | |
c5614fa4 | 9481 | |
d4f1ee75 AM |
9482 | switch (r_type) |
9483 | { | |
9484 | case R_PPC64_TOC16: | |
9485 | case R_PPC64_TOC16_LO: | |
9486 | case R_PPC64_TOC16_HI: | |
9487 | case R_PPC64_TOC16_HA: | |
9488 | case R_PPC64_TOC16_DS: | |
9489 | case R_PPC64_TOC16_LO_DS: | |
9490 | /* In case we're taking addresses of toc entries. */ | |
9491 | case R_PPC64_ADDR64: | |
9492 | break; | |
c5614fa4 | 9493 | |
d4f1ee75 AM |
9494 | default: |
9495 | continue; | |
9496 | } | |
c5614fa4 | 9497 | |
d4f1ee75 AM |
9498 | r_symndx = ELF64_R_SYM (rel->r_info); |
9499 | if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, | |
9500 | r_symndx, ibfd)) | |
9501 | { | |
9502 | free (used); | |
9503 | goto error_ret; | |
9504 | } | |
c5614fa4 | 9505 | |
d4f1ee75 AM |
9506 | if (sym_sec != toc) |
9507 | continue; | |
c5614fa4 | 9508 | |
d4f1ee75 AM |
9509 | if (h != NULL) |
9510 | val = h->root.u.def.value; | |
9511 | else | |
9512 | val = sym->st_value; | |
9513 | val += rel->r_addend; | |
ba761f19 | 9514 | |
d4f1ee75 AM |
9515 | if (val >= toc->size) |
9516 | continue; | |
ba761f19 | 9517 | |
d4f1ee75 AM |
9518 | if ((skip[val >> 3] & can_optimize) != 0) |
9519 | { | |
9520 | bfd_vma off; | |
9521 | unsigned char opc; | |
9522 | ||
9523 | switch (r_type) | |
9524 | { | |
9525 | case R_PPC64_TOC16_HA: | |
ba761f19 | 9526 | break; |
ba761f19 | 9527 | |
d4f1ee75 AM |
9528 | case R_PPC64_TOC16_LO_DS: |
9529 | off = rel->r_offset; | |
9530 | off += (bfd_big_endian (ibfd) ? -2 : 3); | |
9531 | if (!bfd_get_section_contents (ibfd, sec, &opc, | |
9532 | off, 1)) | |
9533 | { | |
9534 | free (used); | |
9535 | goto error_ret; | |
9536 | } | |
9537 | if ((opc & (0x3f << 2)) == (58u << 2)) | |
9538 | break; | |
1a0670f3 | 9539 | /* Fall through. */ |
ba761f19 | 9540 | |
d4f1ee75 AM |
9541 | default: |
9542 | /* Wrong sort of reloc, or not a ld. We may | |
9543 | as well clear ref_from_discarded too. */ | |
9544 | skip[val >> 3] = 0; | |
9545 | } | |
9546 | } | |
9547 | ||
9548 | if (sec != toc) | |
9549 | used[val >> 3] = 1; | |
9550 | /* For the toc section, we only mark as used if this | |
9551 | entry itself isn't unused. */ | |
9552 | else if ((used[rel->r_offset >> 3] | |
9553 | || !(skip[rel->r_offset >> 3] & ref_from_discarded)) | |
9554 | && !used[val >> 3]) | |
9555 | { | |
9556 | /* Do all the relocs again, to catch reference | |
9557 | chains. */ | |
9558 | repeat = 1; | |
9559 | used[val >> 3] = 1; | |
9560 | } | |
9561 | } | |
9562 | } | |
c5614fa4 | 9563 | while (repeat); |
854b41e7 AM |
9564 | |
9565 | if (elf_section_data (sec)->relocs != relstart) | |
9566 | free (relstart); | |
c5614fa4 AM |
9567 | } |
9568 | ||
9569 | /* Merge the used and skip arrays. Assume that TOC | |
9570 | doublewords not appearing as either used or unused belong | |
de194d85 | 9571 | to an entry more than one doubleword in size. */ |
c5614fa4 AM |
9572 | for (drop = skip, keep = used, last = 0, some_unused = 0; |
9573 | drop < skip + (toc->size + 7) / 8; | |
9574 | ++drop, ++keep) | |
9575 | { | |
9576 | if (*keep) | |
9577 | { | |
ba761f19 AM |
9578 | *drop &= ~ref_from_discarded; |
9579 | if ((*drop & can_optimize) != 0) | |
9580 | some_unused = 1; | |
c5614fa4 AM |
9581 | last = 0; |
9582 | } | |
b140b010 | 9583 | else if ((*drop & ref_from_discarded) != 0) |
c5614fa4 AM |
9584 | { |
9585 | some_unused = 1; | |
ba761f19 | 9586 | last = ref_from_discarded; |
c5614fa4 AM |
9587 | } |
9588 | else | |
9589 | *drop = last; | |
9590 | } | |
9591 | ||
9592 | free (used); | |
9593 | ||
9594 | if (some_unused) | |
9595 | { | |
9596 | bfd_byte *contents, *src; | |
9597 | unsigned long off; | |
d62b3684 | 9598 | Elf_Internal_Sym *sym; |
ba761f19 | 9599 | bfd_boolean local_toc_syms = FALSE; |
c5614fa4 AM |
9600 | |
9601 | /* Shuffle the toc contents, and at the same time convert the | |
9602 | skip array from booleans into offsets. */ | |
9603 | if (!bfd_malloc_and_get_section (ibfd, toc, &contents)) | |
9604 | goto error_ret; | |
9605 | ||
9606 | elf_section_data (toc)->this_hdr.contents = contents; | |
9607 | ||
9608 | for (src = contents, off = 0, drop = skip; | |
9609 | src < contents + toc->size; | |
9610 | src += 8, ++drop) | |
9611 | { | |
ba761f19 AM |
9612 | if ((*drop & (can_optimize | ref_from_discarded)) != 0) |
9613 | off += 8; | |
c5614fa4 AM |
9614 | else if (off != 0) |
9615 | { | |
9616 | *drop = off; | |
9617 | memcpy (src - off, src, 8); | |
9618 | } | |
9619 | } | |
854b41e7 | 9620 | *drop = off; |
c5614fa4 AM |
9621 | toc->rawsize = toc->size; |
9622 | toc->size = src - contents - off; | |
9623 | ||
ba761f19 AM |
9624 | /* Adjust addends for relocs against the toc section sym, |
9625 | and optimize any accesses we can. */ | |
c5614fa4 AM |
9626 | for (sec = ibfd->sections; sec != NULL; sec = sec->next) |
9627 | { | |
9628 | if (sec->reloc_count == 0 | |
dbaa2011 | 9629 | || discarded_section (sec)) |
c5614fa4 AM |
9630 | continue; |
9631 | ||
9632 | relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL, | |
854b41e7 | 9633 | info->keep_memory); |
c5614fa4 AM |
9634 | if (relstart == NULL) |
9635 | goto error_ret; | |
9636 | ||
9637 | for (rel = relstart; rel < relstart + sec->reloc_count; ++rel) | |
9638 | { | |
9639 | enum elf_ppc64_reloc_type r_type; | |
9640 | unsigned long r_symndx; | |
9641 | asection *sym_sec; | |
9642 | struct elf_link_hash_entry *h; | |
854b41e7 | 9643 | bfd_vma val; |
c5614fa4 AM |
9644 | |
9645 | r_type = ELF64_R_TYPE (rel->r_info); | |
9646 | switch (r_type) | |
9647 | { | |
9648 | default: | |
9649 | continue; | |
9650 | ||
9651 | case R_PPC64_TOC16: | |
9652 | case R_PPC64_TOC16_LO: | |
9653 | case R_PPC64_TOC16_HI: | |
9654 | case R_PPC64_TOC16_HA: | |
9655 | case R_PPC64_TOC16_DS: | |
9656 | case R_PPC64_TOC16_LO_DS: | |
9657 | case R_PPC64_ADDR64: | |
9658 | break; | |
9659 | } | |
9660 | ||
9661 | r_symndx = ELF64_R_SYM (rel->r_info); | |
9662 | if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, | |
9663 | r_symndx, ibfd)) | |
9664 | goto error_ret; | |
9665 | ||
ba761f19 | 9666 | if (sym_sec != toc) |
c5614fa4 AM |
9667 | continue; |
9668 | ||
ba761f19 AM |
9669 | if (h != NULL) |
9670 | val = h->root.u.def.value; | |
9671 | else | |
9672 | { | |
9673 | val = sym->st_value; | |
9674 | if (val != 0) | |
9675 | local_toc_syms = TRUE; | |
9676 | } | |
9677 | ||
9678 | val += rel->r_addend; | |
854b41e7 AM |
9679 | |
9680 | if (val > toc->rawsize) | |
9681 | val = toc->rawsize; | |
ba761f19 AM |
9682 | else if ((skip[val >> 3] & ref_from_discarded) != 0) |
9683 | continue; | |
9684 | else if ((skip[val >> 3] & can_optimize) != 0) | |
9685 | { | |
9686 | Elf_Internal_Rela *tocrel | |
425b145b | 9687 | = toc_relocs + (skip[val >> 3] >> 2); |
ba761f19 AM |
9688 | unsigned long tsym = ELF64_R_SYM (tocrel->r_info); |
9689 | ||
9690 | switch (r_type) | |
9691 | { | |
9692 | case R_PPC64_TOC16_HA: | |
9693 | rel->r_info = ELF64_R_INFO (tsym, R_PPC64_TOC16_HA); | |
9694 | break; | |
9695 | ||
9696 | case R_PPC64_TOC16_LO_DS: | |
9697 | rel->r_info = ELF64_R_INFO (tsym, R_PPC64_LO_DS_OPT); | |
9698 | break; | |
9699 | ||
9700 | default: | |
28942f62 AM |
9701 | if (!ppc64_elf_howto_table[R_PPC64_ADDR32]) |
9702 | ppc_howto_init (); | |
b140b010 | 9703 | info->callbacks->einfo |
695344c0 | 9704 | /* xgettext:c-format */ |
174d0a74 | 9705 | (_("%H: %s references " |
b140b010 AM |
9706 | "optimized away TOC entry\n"), |
9707 | ibfd, sec, rel->r_offset, | |
9708 | ppc64_elf_howto_table[r_type]->name); | |
9709 | bfd_set_error (bfd_error_bad_value); | |
9710 | goto error_ret; | |
ba761f19 AM |
9711 | } |
9712 | rel->r_addend = tocrel->r_addend; | |
9713 | elf_section_data (sec)->relocs = relstart; | |
9714 | continue; | |
9715 | } | |
9716 | ||
9717 | if (h != NULL || sym->st_value != 0) | |
9718 | continue; | |
854b41e7 AM |
9719 | |
9720 | rel->r_addend -= skip[val >> 3]; | |
9721 | elf_section_data (sec)->relocs = relstart; | |
c5614fa4 | 9722 | } |
854b41e7 AM |
9723 | |
9724 | if (elf_section_data (sec)->relocs != relstart) | |
9725 | free (relstart); | |
c5614fa4 AM |
9726 | } |
9727 | ||
9728 | /* We shouldn't have local or global symbols defined in the TOC, | |
9729 | but handle them anyway. */ | |
df22d223 AM |
9730 | if (local_syms != NULL) |
9731 | for (sym = local_syms; | |
9732 | sym < local_syms + symtab_hdr->sh_info; | |
9733 | ++sym) | |
9734 | if (sym->st_value != 0 | |
9735 | && bfd_section_from_elf_index (ibfd, sym->st_shndx) == toc) | |
9736 | { | |
9737 | unsigned long i; | |
854b41e7 | 9738 | |
df22d223 AM |
9739 | if (sym->st_value > toc->rawsize) |
9740 | i = toc->rawsize >> 3; | |
9741 | else | |
9742 | i = sym->st_value >> 3; | |
854b41e7 | 9743 | |
df22d223 AM |
9744 | if ((skip[i] & (ref_from_discarded | can_optimize)) != 0) |
9745 | { | |
9746 | if (local_toc_syms) | |
4eca0228 | 9747 | _bfd_error_handler |
df22d223 AM |
9748 | (_("%s defined on removed toc entry"), |
9749 | bfd_elf_sym_name (ibfd, symtab_hdr, sym, NULL)); | |
9750 | do | |
9751 | ++i; | |
9752 | while ((skip[i] & (ref_from_discarded | can_optimize))); | |
9753 | sym->st_value = (bfd_vma) i << 3; | |
9754 | } | |
d62b3684 | 9755 | |
df22d223 AM |
9756 | sym->st_value -= skip[i]; |
9757 | symtab_hdr->contents = (unsigned char *) local_syms; | |
9758 | } | |
c5614fa4 | 9759 | |
854b41e7 | 9760 | /* Adjust any global syms defined in this toc input section. */ |
c5614fa4 AM |
9761 | if (toc_inf.global_toc_syms) |
9762 | { | |
9763 | toc_inf.toc = toc; | |
9764 | toc_inf.skip = skip; | |
9765 | toc_inf.global_toc_syms = FALSE; | |
9766 | elf_link_hash_traverse (elf_hash_table (info), adjust_toc_syms, | |
9767 | &toc_inf); | |
9768 | } | |
854b41e7 AM |
9769 | |
9770 | if (toc->reloc_count != 0) | |
9771 | { | |
d4730f92 | 9772 | Elf_Internal_Shdr *rel_hdr; |
854b41e7 AM |
9773 | Elf_Internal_Rela *wrel; |
9774 | bfd_size_type sz; | |
9775 | ||
854b41e7 | 9776 | /* Remove unused toc relocs, and adjust those we keep. */ |
28be611c AM |
9777 | if (toc_relocs == NULL) |
9778 | toc_relocs = _bfd_elf_link_read_relocs (ibfd, toc, NULL, NULL, | |
9779 | info->keep_memory); | |
9780 | if (toc_relocs == NULL) | |
9781 | goto error_ret; | |
9782 | ||
425b145b AM |
9783 | wrel = toc_relocs; |
9784 | for (rel = toc_relocs; rel < toc_relocs + toc->reloc_count; ++rel) | |
ba761f19 AM |
9785 | if ((skip[rel->r_offset >> 3] |
9786 | & (ref_from_discarded | can_optimize)) == 0) | |
854b41e7 AM |
9787 | { |
9788 | wrel->r_offset = rel->r_offset - skip[rel->r_offset >> 3]; | |
9789 | wrel->r_info = rel->r_info; | |
9790 | wrel->r_addend = rel->r_addend; | |
9791 | ++wrel; | |
9792 | } | |
9793 | else if (!dec_dynrel_count (rel->r_info, toc, info, | |
9794 | &local_syms, NULL, NULL)) | |
9795 | goto error_ret; | |
9796 | ||
425b145b AM |
9797 | elf_section_data (toc)->relocs = toc_relocs; |
9798 | toc->reloc_count = wrel - toc_relocs; | |
d4730f92 BS |
9799 | rel_hdr = _bfd_elf_single_rel_hdr (toc); |
9800 | sz = rel_hdr->sh_entsize; | |
9801 | rel_hdr->sh_size = toc->reloc_count * sz; | |
854b41e7 | 9802 | } |
c5614fa4 | 9803 | } |
28be611c AM |
9804 | else if (toc_relocs != NULL |
9805 | && elf_section_data (toc)->relocs != toc_relocs) | |
425b145b | 9806 | free (toc_relocs); |
c5614fa4 AM |
9807 | |
9808 | if (local_syms != NULL | |
9809 | && symtab_hdr->contents != (unsigned char *) local_syms) | |
9810 | { | |
9811 | if (!info->keep_memory) | |
9812 | free (local_syms); | |
9813 | else | |
9814 | symtab_hdr->contents = (unsigned char *) local_syms; | |
9815 | } | |
9816 | free (skip); | |
9817 | } | |
9818 | ||
9819 | return TRUE; | |
9820 | } | |
9821 | ||
1bbe0902 AM |
9822 | /* Return true iff input section I references the TOC using |
9823 | instructions limited to +/-32k offsets. */ | |
9824 | ||
9825 | bfd_boolean | |
9826 | ppc64_elf_has_small_toc_reloc (asection *i) | |
9827 | { | |
9828 | return (is_ppc64_elf (i->owner) | |
9829 | && ppc64_elf_tdata (i->owner)->has_small_toc_reloc); | |
9830 | } | |
9831 | ||
927be08e AM |
9832 | /* Allocate space for one GOT entry. */ |
9833 | ||
9834 | static void | |
9835 | allocate_got (struct elf_link_hash_entry *h, | |
9836 | struct bfd_link_info *info, | |
9837 | struct got_entry *gent) | |
9838 | { | |
9839 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
927be08e AM |
9840 | struct ppc_link_hash_entry *eh = (struct ppc_link_hash_entry *) h; |
9841 | int entsize = (gent->tls_type & eh->tls_mask & (TLS_GD | TLS_LD) | |
9842 | ? 16 : 8); | |
9843 | int rentsize = (gent->tls_type & eh->tls_mask & TLS_GD | |
9844 | ? 2 : 1) * sizeof (Elf64_External_Rela); | |
9845 | asection *got = ppc64_elf_tdata (gent->owner)->got; | |
9846 | ||
9847 | gent->got.offset = got->size; | |
9848 | got->size += entsize; | |
9849 | ||
19e08130 | 9850 | if (h->type == STT_GNU_IFUNC) |
927be08e | 9851 | { |
33e44f2e | 9852 | htab->elf.irelplt->size += rentsize; |
19e08130 | 9853 | htab->got_reli_size += rentsize; |
927be08e | 9854 | } |
f15d0b54 AM |
9855 | else if (((bfd_link_pic (info) |
9856 | && !((gent->tls_type & TLS_TPREL) != 0 | |
9857 | && bfd_link_executable (info) | |
9858 | && SYMBOL_REFERENCES_LOCAL (info, h))) | |
f0158f44 AM |
9859 | || (htab->elf.dynamic_sections_created |
9860 | && h->dynindx != -1 | |
9861 | && !SYMBOL_REFERENCES_LOCAL (info, h))) | |
21d68fcd | 9862 | && !UNDEFWEAK_NO_DYNAMIC_RELOC (info, h)) |
927be08e | 9863 | { |
19e08130 | 9864 | asection *relgot = ppc64_elf_tdata (gent->owner)->relgot; |
927be08e | 9865 | relgot->size += rentsize; |
927be08e AM |
9866 | } |
9867 | } | |
9868 | ||
7865406b AM |
9869 | /* This function merges got entries in the same toc group. */ |
9870 | ||
9871 | static void | |
9872 | merge_got_entries (struct got_entry **pent) | |
9873 | { | |
9874 | struct got_entry *ent, *ent2; | |
9875 | ||
9876 | for (ent = *pent; ent != NULL; ent = ent->next) | |
9877 | if (!ent->is_indirect) | |
9878 | for (ent2 = ent->next; ent2 != NULL; ent2 = ent2->next) | |
9879 | if (!ent2->is_indirect | |
9880 | && ent2->addend == ent->addend | |
9881 | && ent2->tls_type == ent->tls_type | |
9882 | && elf_gp (ent2->owner) == elf_gp (ent->owner)) | |
9883 | { | |
9884 | ent2->is_indirect = TRUE; | |
9885 | ent2->got.ent = ent; | |
9886 | } | |
9887 | } | |
9888 | ||
46434633 | 9889 | /* If H is undefined, make it dynamic if that makes sense. */ |
f0158f44 AM |
9890 | |
9891 | static bfd_boolean | |
46434633 AM |
9892 | ensure_undef_dynamic (struct bfd_link_info *info, |
9893 | struct elf_link_hash_entry *h) | |
f0158f44 AM |
9894 | { |
9895 | struct elf_link_hash_table *htab = elf_hash_table (info); | |
9896 | ||
9897 | if (htab->dynamic_sections_created | |
46434633 AM |
9898 | && ((info->dynamic_undefined_weak != 0 |
9899 | && h->root.type == bfd_link_hash_undefweak) | |
9900 | || h->root.type == bfd_link_hash_undefined) | |
f0158f44 AM |
9901 | && h->dynindx == -1 |
9902 | && !h->forced_local | |
9903 | && ELF_ST_VISIBILITY (h->other) == STV_DEFAULT) | |
9904 | return bfd_elf_link_record_dynamic_symbol (info, h); | |
9905 | return TRUE; | |
9906 | } | |
9907 | ||
65f38f15 AM |
9908 | /* Allocate space in .plt, .got and associated reloc sections for |
9909 | dynamic relocs. */ | |
5bd4f169 | 9910 | |
b34976b6 | 9911 | static bfd_boolean |
4ce794b7 | 9912 | allocate_dynrelocs (struct elf_link_hash_entry *h, void *inf) |
5bd4f169 | 9913 | { |
65f38f15 AM |
9914 | struct bfd_link_info *info; |
9915 | struct ppc_link_hash_table *htab; | |
5bd4f169 | 9916 | asection *s; |
65f38f15 | 9917 | struct ppc_link_hash_entry *eh; |
0b8bcf0d | 9918 | struct got_entry **pgent, *gent; |
5bd4f169 | 9919 | |
e92d460e | 9920 | if (h->root.type == bfd_link_hash_indirect) |
b34976b6 | 9921 | return TRUE; |
5bd4f169 | 9922 | |
65f38f15 AM |
9923 | info = (struct bfd_link_info *) inf; |
9924 | htab = ppc_hash_table (info); | |
4dfe6ac6 NC |
9925 | if (htab == NULL) |
9926 | return FALSE; | |
5bd4f169 | 9927 | |
951fd09b AM |
9928 | eh = (struct ppc_link_hash_entry *) h; |
9929 | /* Run through the TLS GD got entries first if we're changing them | |
9930 | to TPREL. */ | |
37da22e5 | 9931 | if ((eh->tls_mask & (TLS_TLS | TLS_TPRELGD)) == (TLS_TLS | TLS_TPRELGD)) |
951fd09b AM |
9932 | for (gent = h->got.glist; gent != NULL; gent = gent->next) |
9933 | if (gent->got.refcount > 0 | |
9934 | && (gent->tls_type & TLS_GD) != 0) | |
9935 | { | |
9936 | /* This was a GD entry that has been converted to TPREL. If | |
9937 | there happens to be a TPREL entry we can use that one. */ | |
9938 | struct got_entry *ent; | |
9939 | for (ent = h->got.glist; ent != NULL; ent = ent->next) | |
9940 | if (ent->got.refcount > 0 | |
9941 | && (ent->tls_type & TLS_TPREL) != 0 | |
e717da7e AM |
9942 | && ent->addend == gent->addend |
9943 | && ent->owner == gent->owner) | |
951fd09b AM |
9944 | { |
9945 | gent->got.refcount = 0; | |
9946 | break; | |
9947 | } | |
9948 | ||
9949 | /* If not, then we'll be using our own TPREL entry. */ | |
9950 | if (gent->got.refcount != 0) | |
9951 | gent->tls_type = TLS_TLS | TLS_TPREL; | |
9952 | } | |
9953 | ||
7865406b AM |
9954 | /* Remove any list entry that won't generate a word in the GOT before |
9955 | we call merge_got_entries. Otherwise we risk merging to empty | |
9956 | entries. */ | |
0b8bcf0d AM |
9957 | pgent = &h->got.glist; |
9958 | while ((gent = *pgent) != NULL) | |
411e1bfb | 9959 | if (gent->got.refcount > 0) |
7865406b AM |
9960 | { |
9961 | if ((gent->tls_type & TLS_LD) != 0 | |
9962 | && !h->def_dynamic) | |
9963 | { | |
9964 | ppc64_tlsld_got (gent->owner)->got.refcount += 1; | |
9965 | *pgent = gent->next; | |
9966 | } | |
9967 | else | |
9968 | pgent = &gent->next; | |
9969 | } | |
9970 | else | |
9971 | *pgent = gent->next; | |
9972 | ||
9973 | if (!htab->do_multi_toc) | |
9974 | merge_got_entries (&h->got.glist); | |
9975 | ||
9976 | for (gent = h->got.glist; gent != NULL; gent = gent->next) | |
9977 | if (!gent->is_indirect) | |
411e1bfb | 9978 | { |
46434633 AM |
9979 | /* Make sure this symbol is output as a dynamic symbol. */ |
9980 | if (!ensure_undef_dynamic (info, h)) | |
f0158f44 | 9981 | return FALSE; |
65f38f15 | 9982 | |
0c8d6e5c | 9983 | if (!is_ppc64_elf (gent->owner)) |
927be08e | 9984 | abort (); |
0ffa91dd | 9985 | |
927be08e | 9986 | allocate_got (h, info, gent); |
411e1bfb | 9987 | } |
65f38f15 | 9988 | |
954b63d4 AM |
9989 | /* If no dynamic sections we can't have dynamic relocs, except for |
9990 | IFUNCs which are handled even in static executables. */ | |
8a2058b5 AM |
9991 | if (!htab->elf.dynamic_sections_created |
9992 | && h->type != STT_GNU_IFUNC) | |
9993 | eh->dyn_relocs = NULL; | |
9994 | ||
529fe20e AM |
9995 | /* Discard relocs on undefined symbols that must be local. */ |
9996 | else if (h->root.type == bfd_link_hash_undefined | |
9997 | && ELF_ST_VISIBILITY (h->other) != STV_DEFAULT) | |
9998 | eh->dyn_relocs = NULL; | |
9999 | ||
954b63d4 AM |
10000 | /* Also discard relocs on undefined weak syms with non-default |
10001 | visibility, or when dynamic_undefined_weak says so. */ | |
21d68fcd | 10002 | else if (UNDEFWEAK_NO_DYNAMIC_RELOC (info, h)) |
954b63d4 AM |
10003 | eh->dyn_relocs = NULL; |
10004 | ||
8a2058b5 | 10005 | if (eh->dyn_relocs != NULL) |
65f38f15 | 10006 | { |
8a2058b5 AM |
10007 | struct elf_dyn_relocs *p, **pp; |
10008 | ||
57e7d118 AM |
10009 | /* In the shared -Bsymbolic case, discard space allocated for |
10010 | dynamic pc-relative relocs against symbols which turn out to | |
10011 | be defined in regular objects. For the normal shared case, | |
10012 | discard space for relocs that have become local due to symbol | |
10013 | visibility changes. */ | |
10014 | ||
10015 | if (bfd_link_pic (info)) | |
65f38f15 | 10016 | { |
57e7d118 AM |
10017 | /* Relocs that use pc_count are those that appear on a call |
10018 | insn, or certain REL relocs (see must_be_dyn_reloc) that | |
10019 | can be generated via assembly. We want calls to | |
10020 | protected symbols to resolve directly to the function | |
10021 | rather than going via the plt. If people want function | |
10022 | pointer comparisons to work as expected then they should | |
10023 | avoid writing weird assembly. */ | |
10024 | if (SYMBOL_CALLS_LOCAL (info, h)) | |
10025 | { | |
57e7d118 AM |
10026 | for (pp = &eh->dyn_relocs; (p = *pp) != NULL; ) |
10027 | { | |
10028 | p->count -= p->pc_count; | |
10029 | p->pc_count = 0; | |
10030 | if (p->count == 0) | |
10031 | *pp = p->next; | |
10032 | else | |
10033 | pp = &p->next; | |
10034 | } | |
10035 | } | |
65f38f15 | 10036 | |
954b63d4 | 10037 | if (eh->dyn_relocs != NULL) |
5bd4f169 | 10038 | { |
46434633 AM |
10039 | /* Make sure this symbol is output as a dynamic symbol. */ |
10040 | if (!ensure_undef_dynamic (info, h)) | |
f0158f44 | 10041 | return FALSE; |
5bd4f169 | 10042 | } |
65f38f15 | 10043 | } |
529fe20e | 10044 | else if (ELIMINATE_COPY_RELOCS && h->type != STT_GNU_IFUNC) |
57e7d118 | 10045 | { |
8a2058b5 | 10046 | /* For the non-pic case, discard space for relocs against |
57e7d118 AM |
10047 | symbols which turn out to need copy relocs or are not |
10048 | dynamic. */ | |
529fe20e AM |
10049 | if (h->dynamic_adjusted |
10050 | && !h->def_regular | |
10051 | && !ELF_COMMON_DEF_P (h)) | |
f0158f44 | 10052 | { |
46434633 AM |
10053 | /* Make sure this symbol is output as a dynamic symbol. */ |
10054 | if (!ensure_undef_dynamic (info, h)) | |
f0158f44 | 10055 | return FALSE; |
dfbb6ac9 | 10056 | |
f0158f44 AM |
10057 | if (h->dynindx == -1) |
10058 | eh->dyn_relocs = NULL; | |
10059 | } | |
10060 | else | |
8a2058b5 | 10061 | eh->dyn_relocs = NULL; |
57e7d118 AM |
10062 | } |
10063 | ||
10064 | /* Finally, allocate space. */ | |
10065 | for (p = eh->dyn_relocs; p != NULL; p = p->next) | |
10066 | { | |
10067 | asection *sreloc = elf_section_data (p->sec)->sreloc; | |
10068 | if (eh->elf.type == STT_GNU_IFUNC) | |
10069 | sreloc = htab->elf.irelplt; | |
10070 | sreloc->size += p->count * sizeof (Elf64_External_Rela); | |
dfbb6ac9 | 10071 | } |
65f38f15 | 10072 | } |
57e7d118 | 10073 | |
2d7ad24e AM |
10074 | /* We might need a PLT entry when the symbol |
10075 | a) is dynamic, or | |
10076 | b) is an ifunc, or | |
10077 | c) has plt16 relocs and has been processed by adjust_dynamic_symbol, or | |
10078 | d) has plt16 relocs and we are linking statically. */ | |
10079 | if ((htab->elf.dynamic_sections_created && h->dynindx != -1) | |
10080 | || h->type == STT_GNU_IFUNC | |
10081 | || (h->needs_plt && h->dynamic_adjusted) | |
10082 | || (h->needs_plt | |
10083 | && h->def_regular | |
10084 | && !htab->elf.dynamic_sections_created | |
3e04d765 | 10085 | && !htab->can_convert_all_inline_plt |
2d7ad24e AM |
10086 | && (((struct ppc_link_hash_entry *) h)->tls_mask |
10087 | & (TLS_TLS | PLT_KEEP)) == PLT_KEEP)) | |
65f38f15 | 10088 | { |
57e7d118 AM |
10089 | struct plt_entry *pent; |
10090 | bfd_boolean doneone = FALSE; | |
10091 | for (pent = h->plt.plist; pent != NULL; pent = pent->next) | |
10092 | if (pent->plt.refcount > 0) | |
10093 | { | |
10094 | if (!htab->elf.dynamic_sections_created | |
10095 | || h->dynindx == -1) | |
10096 | { | |
2d7ad24e AM |
10097 | if (h->type == STT_GNU_IFUNC) |
10098 | { | |
10099 | s = htab->elf.iplt; | |
10100 | pent->plt.offset = s->size; | |
10101 | s->size += PLT_ENTRY_SIZE (htab); | |
10102 | s = htab->elf.irelplt; | |
10103 | } | |
10104 | else | |
10105 | { | |
10106 | s = htab->pltlocal; | |
10107 | pent->plt.offset = s->size; | |
10108 | s->size += LOCAL_PLT_ENTRY_SIZE (htab); | |
10109 | s = bfd_link_pic (info) ? htab->relpltlocal : NULL; | |
10110 | } | |
57e7d118 AM |
10111 | } |
10112 | else | |
10113 | { | |
10114 | /* If this is the first .plt entry, make room for the special | |
10115 | first entry. */ | |
10116 | s = htab->elf.splt; | |
10117 | if (s->size == 0) | |
10118 | s->size += PLT_INITIAL_ENTRY_SIZE (htab); | |
65f38f15 | 10119 | |
57e7d118 | 10120 | pent->plt.offset = s->size; |
65f38f15 | 10121 | |
57e7d118 AM |
10122 | /* Make room for this entry. */ |
10123 | s->size += PLT_ENTRY_SIZE (htab); | |
65f38f15 | 10124 | |
57e7d118 AM |
10125 | /* Make room for the .glink code. */ |
10126 | s = htab->glink; | |
10127 | if (s->size == 0) | |
9e390558 | 10128 | s->size += GLINK_PLTRESOLVE_SIZE (htab); |
57e7d118 AM |
10129 | if (htab->opd_abi) |
10130 | { | |
10131 | /* We need bigger stubs past index 32767. */ | |
9e390558 | 10132 | if (s->size >= GLINK_PLTRESOLVE_SIZE (htab) + 32768*2*4) |
57e7d118 AM |
10133 | s->size += 4; |
10134 | s->size += 2*4; | |
10135 | } | |
10136 | else | |
10137 | s->size += 4; | |
65f38f15 | 10138 | |
57e7d118 AM |
10139 | /* We also need to make an entry in the .rela.plt section. */ |
10140 | s = htab->elf.srelplt; | |
10141 | } | |
2d7ad24e AM |
10142 | if (s != NULL) |
10143 | s->size += sizeof (Elf64_External_Rela); | |
57e7d118 AM |
10144 | doneone = TRUE; |
10145 | } | |
10146 | else | |
10147 | pent->plt.offset = (bfd_vma) -1; | |
10148 | if (!doneone) | |
10149 | { | |
10150 | h->plt.plist = NULL; | |
10151 | h->needs_plt = 0; | |
10152 | } | |
65f38f15 | 10153 | } |
57e7d118 | 10154 | else |
65f38f15 | 10155 | { |
57e7d118 AM |
10156 | h->plt.plist = NULL; |
10157 | h->needs_plt = 0; | |
65f38f15 AM |
10158 | } |
10159 | ||
b34976b6 | 10160 | return TRUE; |
65f38f15 AM |
10161 | } |
10162 | ||
9e390558 AM |
10163 | #define PPC_LO(v) ((v) & 0xffff) |
10164 | #define PPC_HI(v) (((v) >> 16) & 0xffff) | |
10165 | #define PPC_HA(v) PPC_HI ((v) + 0x8000) | |
10166 | ||
a345bc8d AM |
10167 | /* Called via elf_link_hash_traverse from ppc64_elf_size_dynamic_sections |
10168 | to set up space for global entry stubs. These are put in glink, | |
10169 | after the branch table. */ | |
65f38f15 | 10170 | |
b34976b6 | 10171 | static bfd_boolean |
a345bc8d | 10172 | size_global_entry_stubs (struct elf_link_hash_entry *h, void *inf) |
65f38f15 | 10173 | { |
a345bc8d AM |
10174 | struct bfd_link_info *info; |
10175 | struct ppc_link_hash_table *htab; | |
10176 | struct plt_entry *pent; | |
9e390558 | 10177 | asection *s, *plt; |
65f38f15 | 10178 | |
a345bc8d AM |
10179 | if (h->root.type == bfd_link_hash_indirect) |
10180 | return TRUE; | |
65f38f15 | 10181 | |
a345bc8d AM |
10182 | if (!h->pointer_equality_needed) |
10183 | return TRUE; | |
65f38f15 | 10184 | |
a345bc8d AM |
10185 | if (h->def_regular) |
10186 | return TRUE; | |
65f38f15 | 10187 | |
a345bc8d AM |
10188 | info = inf; |
10189 | htab = ppc_hash_table (info); | |
10190 | if (htab == NULL) | |
10191 | return FALSE; | |
10192 | ||
9e390558 AM |
10193 | s = htab->global_entry; |
10194 | plt = htab->elf.splt; | |
a345bc8d AM |
10195 | for (pent = h->plt.plist; pent != NULL; pent = pent->next) |
10196 | if (pent->plt.offset != (bfd_vma) -1 | |
10197 | && pent->addend == 0) | |
10198 | { | |
afe397ea AM |
10199 | /* For ELFv2, if this symbol is not defined in a regular file |
10200 | and we are not generating a shared library or pie, then we | |
10201 | need to define the symbol in the executable on a call stub. | |
10202 | This is to avoid text relocations. */ | |
9e390558 AM |
10203 | bfd_vma off, stub_align, stub_off, stub_size; |
10204 | unsigned int align_power; | |
10205 | ||
10206 | stub_size = 16; | |
10207 | stub_off = s->size; | |
10208 | if (htab->params->plt_stub_align >= 0) | |
10209 | align_power = htab->params->plt_stub_align; | |
10210 | else | |
10211 | align_power = -htab->params->plt_stub_align; | |
10212 | /* Setting section alignment is delayed until we know it is | |
10213 | non-empty. Otherwise the .text output section will be | |
10214 | aligned at least to plt_stub_align even when no global | |
10215 | entry stubs are needed. */ | |
10216 | if (s->alignment_power < align_power) | |
10217 | s->alignment_power = align_power; | |
10218 | stub_align = (bfd_vma) 1 << align_power; | |
10219 | if (htab->params->plt_stub_align >= 0 | |
10220 | || ((((stub_off + stub_size - 1) & -stub_align) | |
10221 | - (stub_off & -stub_align)) | |
10222 | > ((stub_size - 1) & -stub_align))) | |
10223 | stub_off = (stub_off + stub_align - 1) & -stub_align; | |
10224 | off = pent->plt.offset + plt->output_offset + plt->output_section->vma; | |
10225 | off -= stub_off + s->output_offset + s->output_section->vma; | |
10226 | /* Note that for --plt-stub-align negative we have a possible | |
10227 | dependency between stub offset and size. Break that | |
10228 | dependency by assuming the max stub size when calculating | |
10229 | the stub offset. */ | |
10230 | if (PPC_HA (off) == 0) | |
10231 | stub_size -= 4; | |
8a2058b5 | 10232 | h->root.type = bfd_link_hash_defined; |
afe397ea | 10233 | h->root.u.def.section = s; |
9e390558 AM |
10234 | h->root.u.def.value = stub_off; |
10235 | s->size = stub_off + stub_size; | |
a345bc8d AM |
10236 | break; |
10237 | } | |
10238 | return TRUE; | |
10239 | } | |
10240 | ||
10241 | /* Set DF_TEXTREL if we find any dynamic relocs that apply to | |
10242 | read-only sections. */ | |
10243 | ||
10244 | static bfd_boolean | |
98bbb1b8 | 10245 | maybe_set_textrel (struct elf_link_hash_entry *h, void *inf) |
a345bc8d | 10246 | { |
98bbb1b8 AM |
10247 | asection *sec; |
10248 | ||
a345bc8d AM |
10249 | if (h->root.type == bfd_link_hash_indirect) |
10250 | return TRUE; | |
10251 | ||
98bbb1b8 AM |
10252 | sec = readonly_dynrelocs (h); |
10253 | if (sec != NULL) | |
a345bc8d | 10254 | { |
98bbb1b8 AM |
10255 | struct bfd_link_info *info = (struct bfd_link_info *) inf; |
10256 | ||
10257 | info->flags |= DF_TEXTREL; | |
10258 | info->callbacks->minfo | |
c1c8c1ef | 10259 | (_("%pB: dynamic relocation against `%pT' in read-only section `%pA'\n"), |
63c1f59d | 10260 | sec->owner, h->root.root.string, sec); |
a345bc8d AM |
10261 | |
10262 | /* Not an error, just cut short the traversal. */ | |
10263 | return FALSE; | |
65f38f15 | 10264 | } |
b34976b6 | 10265 | return TRUE; |
65f38f15 AM |
10266 | } |
10267 | ||
10268 | /* Set the sizes of the dynamic sections. */ | |
10269 | ||
b34976b6 | 10270 | static bfd_boolean |
ee67d69a | 10271 | ppc64_elf_size_dynamic_sections (bfd *output_bfd, |
4ce794b7 | 10272 | struct bfd_link_info *info) |
65f38f15 AM |
10273 | { |
10274 | struct ppc_link_hash_table *htab; | |
10275 | bfd *dynobj; | |
10276 | asection *s; | |
b34976b6 | 10277 | bfd_boolean relocs; |
65f38f15 | 10278 | bfd *ibfd; |
7865406b | 10279 | struct got_entry *first_tlsld; |
65f38f15 AM |
10280 | |
10281 | htab = ppc_hash_table (info); | |
4dfe6ac6 NC |
10282 | if (htab == NULL) |
10283 | return FALSE; | |
10284 | ||
65f38f15 AM |
10285 | dynobj = htab->elf.dynobj; |
10286 | if (dynobj == NULL) | |
10287 | abort (); | |
10288 | ||
10289 | if (htab->elf.dynamic_sections_created) | |
10290 | { | |
10291 | /* Set the contents of the .interp section to the interpreter. */ | |
9b8b325a | 10292 | if (bfd_link_executable (info) && !info->nointerp) |
65f38f15 | 10293 | { |
3d4d4302 | 10294 | s = bfd_get_linker_section (dynobj, ".interp"); |
65f38f15 AM |
10295 | if (s == NULL) |
10296 | abort (); | |
eea6121a | 10297 | s->size = sizeof ELF_DYNAMIC_INTERPRETER; |
65f38f15 AM |
10298 | s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER; |
10299 | } | |
10300 | } | |
10301 | ||
10302 | /* Set up .got offsets for local syms, and space for local dynamic | |
10303 | relocs. */ | |
c72f2fb2 | 10304 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next) |
65f38f15 | 10305 | { |
411e1bfb AM |
10306 | struct got_entry **lgot_ents; |
10307 | struct got_entry **end_lgot_ents; | |
e054468f AM |
10308 | struct plt_entry **local_plt; |
10309 | struct plt_entry **end_local_plt; | |
f961d9dd | 10310 | unsigned char *lgot_masks; |
65f38f15 AM |
10311 | bfd_size_type locsymcount; |
10312 | Elf_Internal_Shdr *symtab_hdr; | |
65f38f15 | 10313 | |
0c8d6e5c | 10314 | if (!is_ppc64_elf (ibfd)) |
65f38f15 AM |
10315 | continue; |
10316 | ||
10317 | for (s = ibfd->sections; s != NULL; s = s->next) | |
10318 | { | |
19e08130 | 10319 | struct ppc_dyn_relocs *p; |
65f38f15 | 10320 | |
6edfbbad | 10321 | for (p = elf_section_data (s)->local_dynrel; p != NULL; p = p->next) |
65f38f15 | 10322 | { |
ec338859 AM |
10323 | if (!bfd_is_abs_section (p->sec) |
10324 | && bfd_is_abs_section (p->sec->output_section)) | |
10325 | { | |
10326 | /* Input section has been discarded, either because | |
10327 | it is a copy of a linkonce section or due to | |
10328 | linker script /DISCARD/, so we'll be discarding | |
10329 | the relocs too. */ | |
10330 | } | |
248866a8 | 10331 | else if (p->count != 0) |
ec338859 | 10332 | { |
19e08130 AM |
10333 | asection *srel = elf_section_data (p->sec)->sreloc; |
10334 | if (p->ifunc) | |
33e44f2e | 10335 | srel = htab->elf.irelplt; |
eea6121a | 10336 | srel->size += p->count * sizeof (Elf64_External_Rela); |
248866a8 AM |
10337 | if ((p->sec->output_section->flags & SEC_READONLY) != 0) |
10338 | info->flags |= DF_TEXTREL; | |
ec338859 | 10339 | } |
65f38f15 AM |
10340 | } |
10341 | } | |
10342 | ||
411e1bfb AM |
10343 | lgot_ents = elf_local_got_ents (ibfd); |
10344 | if (!lgot_ents) | |
65f38f15 AM |
10345 | continue; |
10346 | ||
0ffa91dd | 10347 | symtab_hdr = &elf_symtab_hdr (ibfd); |
65f38f15 | 10348 | locsymcount = symtab_hdr->sh_info; |
411e1bfb | 10349 | end_lgot_ents = lgot_ents + locsymcount; |
e054468f AM |
10350 | local_plt = (struct plt_entry **) end_lgot_ents; |
10351 | end_local_plt = local_plt + locsymcount; | |
f961d9dd | 10352 | lgot_masks = (unsigned char *) end_local_plt; |
e717da7e | 10353 | s = ppc64_elf_tdata (ibfd)->got; |
e7b938ca | 10354 | for (; lgot_ents < end_lgot_ents; ++lgot_ents, ++lgot_masks) |
65f38f15 | 10355 | { |
0b8bcf0d | 10356 | struct got_entry **pent, *ent; |
411e1bfb | 10357 | |
0b8bcf0d AM |
10358 | pent = lgot_ents; |
10359 | while ((ent = *pent) != NULL) | |
411e1bfb AM |
10360 | if (ent->got.refcount > 0) |
10361 | { | |
e7b938ca | 10362 | if ((ent->tls_type & *lgot_masks & TLS_LD) != 0) |
411e1bfb | 10363 | { |
927be08e | 10364 | ppc64_tlsld_got (ibfd)->got.refcount += 1; |
0b8bcf0d | 10365 | *pent = ent->next; |
411e1bfb AM |
10366 | } |
10367 | else | |
10368 | { | |
19e08130 AM |
10369 | unsigned int ent_size = 8; |
10370 | unsigned int rel_size = sizeof (Elf64_External_Rela); | |
10371 | ||
eea6121a | 10372 | ent->got.offset = s->size; |
e7b938ca | 10373 | if ((ent->tls_type & *lgot_masks & TLS_GD) != 0) |
927be08e | 10374 | { |
19e08130 AM |
10375 | ent_size *= 2; |
10376 | rel_size *= 2; | |
10377 | } | |
10378 | s->size += ent_size; | |
37da22e5 | 10379 | if ((*lgot_masks & (TLS_TLS | PLT_IFUNC)) == PLT_IFUNC) |
19e08130 | 10380 | { |
33e44f2e | 10381 | htab->elf.irelplt->size += rel_size; |
19e08130 AM |
10382 | htab->got_reli_size += rel_size; |
10383 | } | |
f15d0b54 AM |
10384 | else if (bfd_link_pic (info) |
10385 | && !((ent->tls_type & TLS_TPREL) != 0 | |
10386 | && bfd_link_executable (info))) | |
19e08130 AM |
10387 | { |
10388 | asection *srel = ppc64_elf_tdata (ibfd)->relgot; | |
10389 | srel->size += rel_size; | |
927be08e | 10390 | } |
0b8bcf0d | 10391 | pent = &ent->next; |
411e1bfb AM |
10392 | } |
10393 | } | |
10394 | else | |
0b8bcf0d | 10395 | *pent = ent->next; |
65f38f15 | 10396 | } |
e054468f | 10397 | |
2d7ad24e AM |
10398 | /* Allocate space for plt calls to local syms. */ |
10399 | lgot_masks = (unsigned char *) end_local_plt; | |
10400 | for (; local_plt < end_local_plt; ++local_plt, ++lgot_masks) | |
e054468f AM |
10401 | { |
10402 | struct plt_entry *ent; | |
10403 | ||
10404 | for (ent = *local_plt; ent != NULL; ent = ent->next) | |
10405 | if (ent->plt.refcount > 0) | |
10406 | { | |
2d7ad24e AM |
10407 | if ((*lgot_masks & (TLS_TLS | PLT_IFUNC)) == PLT_IFUNC) |
10408 | { | |
10409 | s = htab->elf.iplt; | |
10410 | ent->plt.offset = s->size; | |
10411 | s->size += PLT_ENTRY_SIZE (htab); | |
10412 | htab->elf.irelplt->size += sizeof (Elf64_External_Rela); | |
10413 | } | |
3e04d765 AM |
10414 | else if (htab->can_convert_all_inline_plt |
10415 | || (*lgot_masks & (TLS_TLS | PLT_KEEP)) != PLT_KEEP) | |
2d7ad24e AM |
10416 | ent->plt.offset = (bfd_vma) -1; |
10417 | else | |
10418 | { | |
10419 | s = htab->pltlocal; | |
10420 | ent->plt.offset = s->size; | |
10421 | s->size += LOCAL_PLT_ENTRY_SIZE (htab); | |
10422 | if (bfd_link_pic (info)) | |
10423 | htab->relpltlocal->size += sizeof (Elf64_External_Rela); | |
10424 | } | |
e054468f AM |
10425 | } |
10426 | else | |
10427 | ent->plt.offset = (bfd_vma) -1; | |
10428 | } | |
65f38f15 AM |
10429 | } |
10430 | ||
10431 | /* Allocate global sym .plt and .got entries, and space for global | |
10432 | sym dynamic relocs. */ | |
4ce794b7 | 10433 | elf_link_hash_traverse (&htab->elf, allocate_dynrelocs, info); |
a345bc8d | 10434 | |
0e1862bb | 10435 | if (!htab->opd_abi && !bfd_link_pic (info)) |
a345bc8d | 10436 | elf_link_hash_traverse (&htab->elf, size_global_entry_stubs, info); |
65f38f15 | 10437 | |
7865406b | 10438 | first_tlsld = NULL; |
c72f2fb2 | 10439 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next) |
102890f0 | 10440 | { |
7865406b AM |
10441 | struct got_entry *ent; |
10442 | ||
0c8d6e5c | 10443 | if (!is_ppc64_elf (ibfd)) |
102890f0 AM |
10444 | continue; |
10445 | ||
7865406b AM |
10446 | ent = ppc64_tlsld_got (ibfd); |
10447 | if (ent->got.refcount > 0) | |
102890f0 | 10448 | { |
7865406b | 10449 | if (!htab->do_multi_toc && first_tlsld != NULL) |
102890f0 | 10450 | { |
7865406b AM |
10451 | ent->is_indirect = TRUE; |
10452 | ent->got.ent = first_tlsld; | |
10453 | } | |
10454 | else | |
10455 | { | |
10456 | if (first_tlsld == NULL) | |
10457 | first_tlsld = ent; | |
10458 | s = ppc64_elf_tdata (ibfd)->got; | |
10459 | ent->got.offset = s->size; | |
10460 | ent->owner = ibfd; | |
10461 | s->size += 16; | |
0e1862bb | 10462 | if (bfd_link_pic (info)) |
7865406b AM |
10463 | { |
10464 | asection *srel = ppc64_elf_tdata (ibfd)->relgot; | |
10465 | srel->size += sizeof (Elf64_External_Rela); | |
10466 | } | |
102890f0 AM |
10467 | } |
10468 | } | |
10469 | else | |
7865406b | 10470 | ent->got.offset = (bfd_vma) -1; |
102890f0 AM |
10471 | } |
10472 | ||
65f38f15 AM |
10473 | /* We now have determined the sizes of the various dynamic sections. |
10474 | Allocate memory for them. */ | |
b34976b6 | 10475 | relocs = FALSE; |
65f38f15 AM |
10476 | for (s = dynobj->sections; s != NULL; s = s->next) |
10477 | { | |
10478 | if ((s->flags & SEC_LINKER_CREATED) == 0) | |
10479 | continue; | |
10480 | ||
4ce794b7 | 10481 | if (s == htab->brlt || s == htab->relbrlt) |
721956f4 AM |
10482 | /* These haven't been allocated yet; don't strip. */ |
10483 | continue; | |
33e44f2e AM |
10484 | else if (s == htab->elf.sgot |
10485 | || s == htab->elf.splt | |
10486 | || s == htab->elf.iplt | |
2d7ad24e | 10487 | || s == htab->pltlocal |
c456f082 | 10488 | || s == htab->glink |
9e390558 | 10489 | || s == htab->global_entry |
5474d94f AM |
10490 | || s == htab->elf.sdynbss |
10491 | || s == htab->elf.sdynrelro) | |
65f38f15 AM |
10492 | { |
10493 | /* Strip this section if we don't need it; see the | |
10494 | comment below. */ | |
5bd4f169 | 10495 | } |
58d180e8 AM |
10496 | else if (s == htab->glink_eh_frame) |
10497 | { | |
10498 | if (!bfd_is_abs_section (s->output_section)) | |
10499 | /* Not sized yet. */ | |
10500 | continue; | |
10501 | } | |
70cc837d | 10502 | else if (CONST_STRNEQ (s->name, ".rela")) |
5bd4f169 | 10503 | { |
c456f082 | 10504 | if (s->size != 0) |
5bd4f169 | 10505 | { |
33e44f2e | 10506 | if (s != htab->elf.srelplt) |
b34976b6 | 10507 | relocs = TRUE; |
5bd4f169 AM |
10508 | |
10509 | /* We use the reloc_count field as a counter if we need | |
10510 | to copy relocs into the output file. */ | |
10511 | s->reloc_count = 0; | |
10512 | } | |
10513 | } | |
65f38f15 | 10514 | else |
5bd4f169 AM |
10515 | { |
10516 | /* It's not one of our sections, so don't allocate space. */ | |
10517 | continue; | |
10518 | } | |
10519 | ||
eea6121a | 10520 | if (s->size == 0) |
5bd4f169 | 10521 | { |
c456f082 AM |
10522 | /* If we don't need this section, strip it from the |
10523 | output file. This is mostly to handle .rela.bss and | |
10524 | .rela.plt. We must create both sections in | |
10525 | create_dynamic_sections, because they must be created | |
10526 | before the linker maps input sections to output | |
10527 | sections. The linker does that before | |
10528 | adjust_dynamic_symbol is called, and it is that | |
10529 | function which decides whether anything needs to go | |
10530 | into these sections. */ | |
8423293d | 10531 | s->flags |= SEC_EXCLUDE; |
5bd4f169 AM |
10532 | continue; |
10533 | } | |
10534 | ||
06bcf541 AM |
10535 | if (bfd_is_abs_section (s->output_section)) |
10536 | _bfd_error_handler (_("warning: discarding dynamic section %s"), | |
10537 | s->name); | |
10538 | ||
c456f082 | 10539 | if ((s->flags & SEC_HAS_CONTENTS) == 0) |
5f333394 AM |
10540 | continue; |
10541 | ||
65f38f15 AM |
10542 | /* Allocate memory for the section contents. We use bfd_zalloc |
10543 | here in case unused entries are not reclaimed before the | |
10544 | section's contents are written out. This should not happen, | |
411e1bfb AM |
10545 | but this way if it does we get a R_PPC64_NONE reloc in .rela |
10546 | sections instead of garbage. | |
10547 | We also rely on the section contents being zero when writing | |
5474d94f | 10548 | the GOT and .dynrelro. */ |
eea6121a | 10549 | s->contents = bfd_zalloc (dynobj, s->size); |
65f38f15 | 10550 | if (s->contents == NULL) |
b34976b6 | 10551 | return FALSE; |
5bd4f169 AM |
10552 | } |
10553 | ||
c72f2fb2 | 10554 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next) |
e717da7e | 10555 | { |
0c8d6e5c | 10556 | if (!is_ppc64_elf (ibfd)) |
7b53ace3 AM |
10557 | continue; |
10558 | ||
e717da7e | 10559 | s = ppc64_elf_tdata (ibfd)->got; |
33e44f2e | 10560 | if (s != NULL && s != htab->elf.sgot) |
e717da7e | 10561 | { |
eea6121a | 10562 | if (s->size == 0) |
8423293d | 10563 | s->flags |= SEC_EXCLUDE; |
e717da7e AM |
10564 | else |
10565 | { | |
eea6121a | 10566 | s->contents = bfd_zalloc (ibfd, s->size); |
e717da7e AM |
10567 | if (s->contents == NULL) |
10568 | return FALSE; | |
10569 | } | |
10570 | } | |
10571 | s = ppc64_elf_tdata (ibfd)->relgot; | |
10572 | if (s != NULL) | |
10573 | { | |
eea6121a | 10574 | if (s->size == 0) |
8423293d | 10575 | s->flags |= SEC_EXCLUDE; |
e717da7e AM |
10576 | else |
10577 | { | |
eea6121a | 10578 | s->contents = bfd_zalloc (ibfd, s->size); |
e717da7e AM |
10579 | if (s->contents == NULL) |
10580 | return FALSE; | |
10581 | relocs = TRUE; | |
10582 | s->reloc_count = 0; | |
10583 | } | |
10584 | } | |
10585 | } | |
10586 | ||
e86ce104 | 10587 | if (htab->elf.dynamic_sections_created) |
5bd4f169 | 10588 | { |
e8910a83 AM |
10589 | bfd_boolean tls_opt; |
10590 | ||
5bd4f169 AM |
10591 | /* Add some entries to the .dynamic section. We fill in the |
10592 | values later, in ppc64_elf_finish_dynamic_sections, but we | |
10593 | must add the entries now so that we get the correct size for | |
10594 | the .dynamic section. The DT_DEBUG entry is filled in by the | |
10595 | dynamic linker and used by the debugger. */ | |
dc810e39 | 10596 | #define add_dynamic_entry(TAG, VAL) \ |
5a580b3a | 10597 | _bfd_elf_add_dynamic_entry (info, TAG, VAL) |
dc810e39 | 10598 | |
0e1862bb | 10599 | if (bfd_link_executable (info)) |
5bd4f169 | 10600 | { |
dc810e39 | 10601 | if (!add_dynamic_entry (DT_DEBUG, 0)) |
b34976b6 | 10602 | return FALSE; |
5bd4f169 AM |
10603 | } |
10604 | ||
33e44f2e | 10605 | if (htab->elf.splt != NULL && htab->elf.splt->size != 0) |
5bd4f169 | 10606 | { |
dc810e39 AM |
10607 | if (!add_dynamic_entry (DT_PLTGOT, 0) |
10608 | || !add_dynamic_entry (DT_PLTRELSZ, 0) | |
10609 | || !add_dynamic_entry (DT_PLTREL, DT_RELA) | |
5d1634d7 AM |
10610 | || !add_dynamic_entry (DT_JMPREL, 0) |
10611 | || !add_dynamic_entry (DT_PPC64_GLINK, 0)) | |
b34976b6 | 10612 | return FALSE; |
5bd4f169 AM |
10613 | } |
10614 | ||
ee67d69a | 10615 | if (NO_OPD_RELOCS && abiversion (output_bfd) <= 1) |
19397422 AM |
10616 | { |
10617 | if (!add_dynamic_entry (DT_PPC64_OPD, 0) | |
10618 | || !add_dynamic_entry (DT_PPC64_OPDSZ, 0)) | |
b34976b6 | 10619 | return FALSE; |
19397422 AM |
10620 | } |
10621 | ||
7c9cf415 | 10622 | tls_opt = (htab->params->tls_get_addr_opt |
e8910a83 AM |
10623 | && htab->tls_get_addr_fd != NULL |
10624 | && htab->tls_get_addr_fd->elf.plt.plist != NULL); | |
10625 | if (tls_opt || !htab->opd_abi) | |
10626 | { | |
10627 | if (!add_dynamic_entry (DT_PPC64_OPT, tls_opt ? PPC64_OPT_TLS : 0)) | |
10628 | return FALSE; | |
10629 | } | |
a7f2871e | 10630 | |
5bd4f169 AM |
10631 | if (relocs) |
10632 | { | |
dc810e39 AM |
10633 | if (!add_dynamic_entry (DT_RELA, 0) |
10634 | || !add_dynamic_entry (DT_RELASZ, 0) | |
10635 | || !add_dynamic_entry (DT_RELAENT, sizeof (Elf64_External_Rela))) | |
b34976b6 | 10636 | return FALSE; |
5bd4f169 | 10637 | |
65f38f15 AM |
10638 | /* If any dynamic relocs apply to a read-only section, |
10639 | then we need a DT_TEXTREL entry. */ | |
248866a8 | 10640 | if ((info->flags & DF_TEXTREL) == 0) |
a345bc8d | 10641 | elf_link_hash_traverse (&htab->elf, maybe_set_textrel, info); |
5bd4f169 | 10642 | |
65f38f15 | 10643 | if ((info->flags & DF_TEXTREL) != 0) |
5bd4f169 | 10644 | { |
65f38f15 | 10645 | if (!add_dynamic_entry (DT_TEXTREL, 0)) |
b34976b6 | 10646 | return FALSE; |
5bd4f169 | 10647 | } |
5bd4f169 | 10648 | } |
5bd4f169 | 10649 | } |
65f38f15 | 10650 | #undef add_dynamic_entry |
5bd4f169 | 10651 | |
b34976b6 | 10652 | return TRUE; |
5bd4f169 AM |
10653 | } |
10654 | ||
a345bc8d AM |
10655 | /* Return TRUE if symbol should be hashed in the `.gnu.hash' section. */ |
10656 | ||
10657 | static bfd_boolean | |
10658 | ppc64_elf_hash_symbol (struct elf_link_hash_entry *h) | |
10659 | { | |
10660 | if (h->plt.plist != NULL | |
10661 | && !h->def_regular | |
10662 | && !h->pointer_equality_needed) | |
10663 | return FALSE; | |
10664 | ||
10665 | return _bfd_elf_hash_symbol (h); | |
10666 | } | |
10667 | ||
721956f4 | 10668 | /* Determine the type of stub needed, if any, for a call. */ |
5bd4f169 | 10669 | |
4ce794b7 AM |
10670 | static inline enum ppc_stub_type |
10671 | ppc_type_of_stub (asection *input_sec, | |
10672 | const Elf_Internal_Rela *rel, | |
10673 | struct ppc_link_hash_entry **hash, | |
e054468f | 10674 | struct plt_entry **plt_ent, |
6911b7dc AM |
10675 | bfd_vma destination, |
10676 | unsigned long local_off) | |
5bd4f169 | 10677 | { |
721956f4 AM |
10678 | struct ppc_link_hash_entry *h = *hash; |
10679 | bfd_vma location; | |
10680 | bfd_vma branch_offset; | |
10681 | bfd_vma max_branch_offset; | |
4ce794b7 | 10682 | enum elf_ppc64_reloc_type r_type; |
5bd4f169 | 10683 | |
721956f4 AM |
10684 | if (h != NULL) |
10685 | { | |
e054468f | 10686 | struct plt_entry *ent; |
7fe2b9a6 | 10687 | struct ppc_link_hash_entry *fdh = h; |
b31867b6 AM |
10688 | if (h->oh != NULL |
10689 | && h->oh->is_func_descriptor) | |
7b8f6675 AM |
10690 | { |
10691 | fdh = ppc_follow_link (h->oh); | |
10692 | *hash = fdh; | |
10693 | } | |
8387904d | 10694 | |
e054468f AM |
10695 | for (ent = fdh->elf.plt.plist; ent != NULL; ent = ent->next) |
10696 | if (ent->addend == rel->r_addend | |
10697 | && ent->plt.offset != (bfd_vma) -1) | |
10698 | { | |
e054468f AM |
10699 | *plt_ent = ent; |
10700 | return ppc_stub_plt_call; | |
10701 | } | |
5bd4f169 | 10702 | |
7fe2b9a6 AM |
10703 | /* Here, we know we don't have a plt entry. If we don't have a |
10704 | either a defined function descriptor or a defined entry symbol | |
10705 | in a regular object file, then it is pointless trying to make | |
10706 | any other type of stub. */ | |
854b41e7 AM |
10707 | if (!is_static_defined (&fdh->elf) |
10708 | && !is_static_defined (&h->elf)) | |
721956f4 | 10709 | return ppc_stub_none; |
5d1634d7 | 10710 | } |
e054468f AM |
10711 | else if (elf_local_got_ents (input_sec->owner) != NULL) |
10712 | { | |
10713 | Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (input_sec->owner); | |
10714 | struct plt_entry **local_plt = (struct plt_entry **) | |
10715 | elf_local_got_ents (input_sec->owner) + symtab_hdr->sh_info; | |
10716 | unsigned long r_symndx = ELF64_R_SYM (rel->r_info); | |
10717 | ||
10718 | if (local_plt[r_symndx] != NULL) | |
10719 | { | |
10720 | struct plt_entry *ent; | |
10721 | ||
10722 | for (ent = local_plt[r_symndx]; ent != NULL; ent = ent->next) | |
10723 | if (ent->addend == rel->r_addend | |
10724 | && ent->plt.offset != (bfd_vma) -1) | |
10725 | { | |
10726 | *plt_ent = ent; | |
10727 | return ppc_stub_plt_call; | |
10728 | } | |
10729 | } | |
10730 | } | |
5d1634d7 | 10731 | |
721956f4 AM |
10732 | /* Determine where the call point is. */ |
10733 | location = (input_sec->output_offset | |
10734 | + input_sec->output_section->vma | |
10735 | + rel->r_offset); | |
5d1634d7 | 10736 | |
721956f4 AM |
10737 | branch_offset = destination - location; |
10738 | r_type = ELF64_R_TYPE (rel->r_info); | |
5d1634d7 | 10739 | |
721956f4 AM |
10740 | /* Determine if a long branch stub is needed. */ |
10741 | max_branch_offset = 1 << 25; | |
23cedd1d AM |
10742 | if (r_type == R_PPC64_REL14 |
10743 | || r_type == R_PPC64_REL14_BRTAKEN | |
10744 | || r_type == R_PPC64_REL14_BRNTAKEN) | |
721956f4 | 10745 | max_branch_offset = 1 << 15; |
5d1634d7 | 10746 | |
6911b7dc | 10747 | if (branch_offset + max_branch_offset >= 2 * max_branch_offset - local_off) |
721956f4 AM |
10748 | /* We need a stub. Figure out whether a long_branch or plt_branch |
10749 | is needed later. */ | |
10750 | return ppc_stub_long_branch; | |
5d1634d7 | 10751 | |
721956f4 | 10752 | return ppc_stub_none; |
5d1634d7 AM |
10753 | } |
10754 | ||
794e51c0 AM |
10755 | /* With power7 weakly ordered memory model, it is possible for ld.so |
10756 | to update a plt entry in one thread and have another thread see a | |
10757 | stale zero toc entry. To avoid this we need some sort of acquire | |
10758 | barrier in the call stub. One solution is to make the load of the | |
10759 | toc word seem to appear to depend on the load of the function entry | |
10760 | word. Another solution is to test for r2 being zero, and branch to | |
10761 | the appropriate glink entry if so. | |
10762 | ||
10763 | . fake dep barrier compare | |
71a39c98 AM |
10764 | . ld 12,xxx(2) ld 12,xxx(2) |
10765 | . mtctr 12 mtctr 12 | |
10766 | . xor 11,12,12 ld 2,xxx+8(2) | |
794e51c0 AM |
10767 | . add 2,2,11 cmpldi 2,0 |
10768 | . ld 2,xxx+8(2) bnectr+ | |
10769 | . bctr b <glink_entry> | |
10770 | ||
10771 | The solution involving the compare turns out to be faster, so | |
10772 | that's what we use unless the branch won't reach. */ | |
10773 | ||
10774 | #define ALWAYS_USE_FAKE_DEP 0 | |
10775 | #define ALWAYS_EMIT_R2SAVE 0 | |
5d1634d7 | 10776 | |
794e51c0 AM |
10777 | static inline unsigned int |
10778 | plt_stub_size (struct ppc_link_hash_table *htab, | |
10779 | struct ppc_stub_hash_entry *stub_entry, | |
10780 | bfd_vma off) | |
10781 | { | |
b9e5796b AM |
10782 | unsigned size = 12; |
10783 | ||
10784 | if (ALWAYS_EMIT_R2SAVE | |
10785 | || stub_entry->stub_type == ppc_stub_plt_call_r2save) | |
10786 | size += 4; | |
10787 | if (PPC_HA (off) != 0) | |
794e51c0 | 10788 | size += 4; |
b9e5796b AM |
10789 | if (htab->opd_abi) |
10790 | { | |
10791 | size += 4; | |
e7d1c40c | 10792 | if (htab->params->plt_static_chain) |
b9e5796b | 10793 | size += 4; |
bd4d2eaa AM |
10794 | if (htab->params->plt_thread_safe |
10795 | && htab->elf.dynamic_sections_created | |
10796 | && stub_entry->h != NULL | |
10797 | && stub_entry->h->elf.dynindx != -1) | |
b9e5796b | 10798 | size += 8; |
e7d1c40c | 10799 | if (PPC_HA (off + 8 + 8 * htab->params->plt_static_chain) != PPC_HA (off)) |
b9e5796b AM |
10800 | size += 4; |
10801 | } | |
794e51c0 AM |
10802 | if (stub_entry->h != NULL |
10803 | && (stub_entry->h == htab->tls_get_addr_fd | |
10804 | || stub_entry->h == htab->tls_get_addr) | |
7c9cf415 | 10805 | && htab->params->tls_get_addr_opt) |
f378ab09 AM |
10806 | { |
10807 | size += 7 * 4; | |
10808 | if (ALWAYS_EMIT_R2SAVE | |
10809 | || stub_entry->stub_type == ppc_stub_plt_call_r2save) | |
407aa07c | 10810 | size += 6 * 4; |
f378ab09 | 10811 | } |
794e51c0 AM |
10812 | return size; |
10813 | } | |
10814 | ||
2420fff6 AM |
10815 | /* Depending on the sign of plt_stub_align: |
10816 | If positive, return the padding to align to a 2**plt_stub_align | |
10817 | boundary. | |
10818 | If negative, if this stub would cross fewer 2**plt_stub_align | |
10819 | boundaries if we align, then return the padding needed to do so. */ | |
10820 | ||
794e51c0 AM |
10821 | static inline unsigned int |
10822 | plt_stub_pad (struct ppc_link_hash_table *htab, | |
10823 | struct ppc_stub_hash_entry *stub_entry, | |
10824 | bfd_vma plt_off) | |
10825 | { | |
2420fff6 | 10826 | int stub_align; |
794e51c0 | 10827 | unsigned stub_size = plt_stub_size (htab, stub_entry, plt_off); |
6f20ed8a | 10828 | bfd_vma stub_off = stub_entry->group->stub_sec->size; |
794e51c0 | 10829 | |
2420fff6 AM |
10830 | if (htab->params->plt_stub_align >= 0) |
10831 | { | |
10832 | stub_align = 1 << htab->params->plt_stub_align; | |
10833 | if ((stub_off & (stub_align - 1)) != 0) | |
10834 | return stub_align - (stub_off & (stub_align - 1)); | |
10835 | return 0; | |
10836 | } | |
10837 | ||
10838 | stub_align = 1 << -htab->params->plt_stub_align; | |
794e51c0 | 10839 | if (((stub_off + stub_size - 1) & -stub_align) - (stub_off & -stub_align) |
e05fa0ba | 10840 | > ((stub_size - 1) & -stub_align)) |
794e51c0 AM |
10841 | return stub_align - (stub_off & (stub_align - 1)); |
10842 | return 0; | |
10843 | } | |
10844 | ||
10845 | /* Build a .plt call stub. */ | |
10846 | ||
10847 | static inline bfd_byte * | |
10848 | build_plt_stub (struct ppc_link_hash_table *htab, | |
10849 | struct ppc_stub_hash_entry *stub_entry, | |
10850 | bfd_byte *p, bfd_vma offset, Elf_Internal_Rela *r) | |
10851 | { | |
e7d1c40c | 10852 | bfd *obfd = htab->params->stub_bfd; |
b9e5796b | 10853 | bfd_boolean plt_load_toc = htab->opd_abi; |
e7d1c40c | 10854 | bfd_boolean plt_static_chain = htab->params->plt_static_chain; |
bd4d2eaa AM |
10855 | bfd_boolean plt_thread_safe = (htab->params->plt_thread_safe |
10856 | && htab->elf.dynamic_sections_created | |
10857 | && stub_entry->h != NULL | |
10858 | && stub_entry->h->elf.dynindx != -1); | |
794e51c0 AM |
10859 | bfd_boolean use_fake_dep = plt_thread_safe; |
10860 | bfd_vma cmp_branch_off = 0; | |
10861 | ||
10862 | if (!ALWAYS_USE_FAKE_DEP | |
b9e5796b | 10863 | && plt_load_toc |
794e51c0 | 10864 | && plt_thread_safe |
bd4d2eaa AM |
10865 | && !((stub_entry->h == htab->tls_get_addr_fd |
10866 | || stub_entry->h == htab->tls_get_addr) | |
7c9cf415 | 10867 | && htab->params->tls_get_addr_opt)) |
794e51c0 AM |
10868 | { |
10869 | bfd_vma pltoff = stub_entry->plt_ent->plt.offset & ~1; | |
b9e5796b AM |
10870 | bfd_vma pltindex = ((pltoff - PLT_INITIAL_ENTRY_SIZE (htab)) |
10871 | / PLT_ENTRY_SIZE (htab)); | |
9e390558 | 10872 | bfd_vma glinkoff = GLINK_PLTRESOLVE_SIZE (htab) + pltindex * 8; |
794e51c0 AM |
10873 | bfd_vma to, from; |
10874 | ||
68d62958 AM |
10875 | if (pltindex > 32768) |
10876 | glinkoff += (pltindex - 32768) * 4; | |
794e51c0 AM |
10877 | to = (glinkoff |
10878 | + htab->glink->output_offset | |
10879 | + htab->glink->output_section->vma); | |
6f20ed8a | 10880 | from = (p - stub_entry->group->stub_sec->contents |
794e51c0 AM |
10881 | + 4 * (ALWAYS_EMIT_R2SAVE |
10882 | || stub_entry->stub_type == ppc_stub_plt_call_r2save) | |
10883 | + 4 * (PPC_HA (offset) != 0) | |
10884 | + 4 * (PPC_HA (offset + 8 + 8 * plt_static_chain) | |
10885 | != PPC_HA (offset)) | |
10886 | + 4 * (plt_static_chain != 0) | |
10887 | + 20 | |
6f20ed8a AM |
10888 | + stub_entry->group->stub_sec->output_offset |
10889 | + stub_entry->group->stub_sec->output_section->vma); | |
794e51c0 AM |
10890 | cmp_branch_off = to - from; |
10891 | use_fake_dep = cmp_branch_off + (1 << 25) >= (1 << 26); | |
10892 | } | |
10893 | ||
ac2df442 AM |
10894 | if (PPC_HA (offset) != 0) |
10895 | { | |
176a0d42 AM |
10896 | if (r != NULL) |
10897 | { | |
794e51c0 AM |
10898 | if (ALWAYS_EMIT_R2SAVE |
10899 | || stub_entry->stub_type == ppc_stub_plt_call_r2save) | |
10900 | r[0].r_offset += 4; | |
176a0d42 | 10901 | r[0].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_HA); |
3b421ab3 | 10902 | r[1].r_offset = r[0].r_offset + 4; |
176a0d42 AM |
10903 | r[1].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS); |
10904 | r[1].r_addend = r[0].r_addend; | |
b9e5796b | 10905 | if (plt_load_toc) |
176a0d42 | 10906 | { |
b9e5796b | 10907 | if (PPC_HA (offset + 8 + 8 * plt_static_chain) != PPC_HA (offset)) |
c7131b65 | 10908 | { |
b9e5796b AM |
10909 | r[2].r_offset = r[1].r_offset + 4; |
10910 | r[2].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_LO); | |
10911 | r[2].r_addend = r[0].r_addend; | |
10912 | } | |
10913 | else | |
10914 | { | |
10915 | r[2].r_offset = r[1].r_offset + 8 + 8 * use_fake_dep; | |
10916 | r[2].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS); | |
10917 | r[2].r_addend = r[0].r_addend + 8; | |
10918 | if (plt_static_chain) | |
10919 | { | |
10920 | r[3].r_offset = r[2].r_offset + 4; | |
10921 | r[3].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS); | |
10922 | r[3].r_addend = r[0].r_addend + 16; | |
10923 | } | |
c7131b65 | 10924 | } |
176a0d42 AM |
10925 | } |
10926 | } | |
794e51c0 AM |
10927 | if (ALWAYS_EMIT_R2SAVE |
10928 | || stub_entry->stub_type == ppc_stub_plt_call_r2save) | |
a078d95a | 10929 | bfd_put_32 (obfd, STD_R2_0R1 + STK_TOC (htab), p), p += 4; |
397998fc AM |
10930 | if (plt_load_toc) |
10931 | { | |
10932 | bfd_put_32 (obfd, ADDIS_R11_R2 | PPC_HA (offset), p), p += 4; | |
10933 | bfd_put_32 (obfd, LD_R12_0R11 | PPC_LO (offset), p), p += 4; | |
10934 | } | |
10935 | else | |
10936 | { | |
10937 | bfd_put_32 (obfd, ADDIS_R12_R2 | PPC_HA (offset), p), p += 4; | |
10938 | bfd_put_32 (obfd, LD_R12_0R12 | PPC_LO (offset), p), p += 4; | |
10939 | } | |
b9e5796b AM |
10940 | if (plt_load_toc |
10941 | && PPC_HA (offset + 8 + 8 * plt_static_chain) != PPC_HA (offset)) | |
ac2df442 | 10942 | { |
71a39c98 | 10943 | bfd_put_32 (obfd, ADDI_R11_R11 | PPC_LO (offset), p), p += 4; |
ac2df442 AM |
10944 | offset = 0; |
10945 | } | |
71a39c98 | 10946 | bfd_put_32 (obfd, MTCTR_R12, p), p += 4; |
b9e5796b | 10947 | if (plt_load_toc) |
794e51c0 | 10948 | { |
b9e5796b AM |
10949 | if (use_fake_dep) |
10950 | { | |
10951 | bfd_put_32 (obfd, XOR_R2_R12_R12, p), p += 4; | |
10952 | bfd_put_32 (obfd, ADD_R11_R11_R2, p), p += 4; | |
10953 | } | |
10954 | bfd_put_32 (obfd, LD_R2_0R11 | PPC_LO (offset + 8), p), p += 4; | |
10955 | if (plt_static_chain) | |
10956 | bfd_put_32 (obfd, LD_R11_0R11 | PPC_LO (offset + 16), p), p += 4; | |
794e51c0 | 10957 | } |
ac2df442 AM |
10958 | } |
10959 | else | |
10960 | { | |
176a0d42 AM |
10961 | if (r != NULL) |
10962 | { | |
794e51c0 AM |
10963 | if (ALWAYS_EMIT_R2SAVE |
10964 | || stub_entry->stub_type == ppc_stub_plt_call_r2save) | |
10965 | r[0].r_offset += 4; | |
176a0d42 | 10966 | r[0].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_DS); |
b9e5796b | 10967 | if (plt_load_toc) |
176a0d42 | 10968 | { |
b9e5796b | 10969 | if (PPC_HA (offset + 8 + 8 * plt_static_chain) != PPC_HA (offset)) |
c7131b65 | 10970 | { |
b9e5796b AM |
10971 | r[1].r_offset = r[0].r_offset + 4; |
10972 | r[1].r_info = ELF64_R_INFO (0, R_PPC64_TOC16); | |
10973 | r[1].r_addend = r[0].r_addend; | |
10974 | } | |
10975 | else | |
10976 | { | |
10977 | r[1].r_offset = r[0].r_offset + 8 + 8 * use_fake_dep; | |
10978 | r[1].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_DS); | |
10979 | r[1].r_addend = r[0].r_addend + 8 + 8 * plt_static_chain; | |
10980 | if (plt_static_chain) | |
10981 | { | |
10982 | r[2].r_offset = r[1].r_offset + 4; | |
10983 | r[2].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_DS); | |
10984 | r[2].r_addend = r[0].r_addend + 8; | |
10985 | } | |
c7131b65 | 10986 | } |
176a0d42 AM |
10987 | } |
10988 | } | |
794e51c0 AM |
10989 | if (ALWAYS_EMIT_R2SAVE |
10990 | || stub_entry->stub_type == ppc_stub_plt_call_r2save) | |
a078d95a | 10991 | bfd_put_32 (obfd, STD_R2_0R1 + STK_TOC (htab), p), p += 4; |
71a39c98 | 10992 | bfd_put_32 (obfd, LD_R12_0R2 | PPC_LO (offset), p), p += 4; |
b9e5796b AM |
10993 | if (plt_load_toc |
10994 | && PPC_HA (offset + 8 + 8 * plt_static_chain) != PPC_HA (offset)) | |
ac2df442 AM |
10995 | { |
10996 | bfd_put_32 (obfd, ADDI_R2_R2 | PPC_LO (offset), p), p += 4; | |
10997 | offset = 0; | |
10998 | } | |
71a39c98 | 10999 | bfd_put_32 (obfd, MTCTR_R12, p), p += 4; |
b9e5796b | 11000 | if (plt_load_toc) |
794e51c0 | 11001 | { |
b9e5796b AM |
11002 | if (use_fake_dep) |
11003 | { | |
11004 | bfd_put_32 (obfd, XOR_R11_R12_R12, p), p += 4; | |
11005 | bfd_put_32 (obfd, ADD_R2_R2_R11, p), p += 4; | |
11006 | } | |
11007 | if (plt_static_chain) | |
11008 | bfd_put_32 (obfd, LD_R11_0R2 | PPC_LO (offset + 16), p), p += 4; | |
11009 | bfd_put_32 (obfd, LD_R2_0R2 | PPC_LO (offset + 8), p), p += 4; | |
794e51c0 | 11010 | } |
ac2df442 | 11011 | } |
b9e5796b | 11012 | if (plt_load_toc && plt_thread_safe && !use_fake_dep) |
794e51c0 AM |
11013 | { |
11014 | bfd_put_32 (obfd, CMPLDI_R2_0, p), p += 4; | |
11015 | bfd_put_32 (obfd, BNECTR_P4, p), p += 4; | |
22aa0c7e | 11016 | bfd_put_32 (obfd, B_DOT | (cmp_branch_off & 0x3fffffc), p), p += 4; |
794e51c0 AM |
11017 | } |
11018 | else | |
407aa07c | 11019 | bfd_put_32 (obfd, BCTR, p), p += 4; |
5d1634d7 AM |
11020 | return p; |
11021 | } | |
11022 | ||
a7f2871e AM |
11023 | /* Build a special .plt call stub for __tls_get_addr. */ |
11024 | ||
11025 | #define LD_R11_0R3 0xe9630000 | |
11026 | #define LD_R12_0R3 0xe9830000 | |
11027 | #define MR_R0_R3 0x7c601b78 | |
11028 | #define CMPDI_R11_0 0x2c2b0000 | |
11029 | #define ADD_R3_R12_R13 0x7c6c6a14 | |
11030 | #define BEQLR 0x4d820020 | |
11031 | #define MR_R3_R0 0x7c030378 | |
a7f2871e AM |
11032 | #define STD_R11_0R1 0xf9610000 |
11033 | #define BCTRL 0x4e800421 | |
11034 | #define LD_R11_0R1 0xe9610000 | |
a7f2871e AM |
11035 | #define MTLR_R11 0x7d6803a6 |
11036 | ||
11037 | static inline bfd_byte * | |
794e51c0 AM |
11038 | build_tls_get_addr_stub (struct ppc_link_hash_table *htab, |
11039 | struct ppc_stub_hash_entry *stub_entry, | |
11040 | bfd_byte *p, bfd_vma offset, Elf_Internal_Rela *r) | |
a7f2871e | 11041 | { |
e7d1c40c | 11042 | bfd *obfd = htab->params->stub_bfd; |
794e51c0 | 11043 | |
a7f2871e AM |
11044 | bfd_put_32 (obfd, LD_R11_0R3 + 0, p), p += 4; |
11045 | bfd_put_32 (obfd, LD_R12_0R3 + 8, p), p += 4; | |
11046 | bfd_put_32 (obfd, MR_R0_R3, p), p += 4; | |
11047 | bfd_put_32 (obfd, CMPDI_R11_0, p), p += 4; | |
11048 | bfd_put_32 (obfd, ADD_R3_R12_R13, p), p += 4; | |
11049 | bfd_put_32 (obfd, BEQLR, p), p += 4; | |
11050 | bfd_put_32 (obfd, MR_R3_R0, p), p += 4; | |
f378ab09 AM |
11051 | if (r != NULL) |
11052 | r[0].r_offset += 7 * 4; | |
11053 | if (!ALWAYS_EMIT_R2SAVE | |
11054 | && stub_entry->stub_type != ppc_stub_plt_call_r2save) | |
11055 | return build_plt_stub (htab, stub_entry, p, offset, r); | |
11056 | ||
a7f2871e | 11057 | bfd_put_32 (obfd, MFLR_R11, p), p += 4; |
a078d95a | 11058 | bfd_put_32 (obfd, STD_R11_0R1 + STK_LINKER (htab), p), p += 4; |
a7f2871e AM |
11059 | |
11060 | if (r != NULL) | |
f378ab09 | 11061 | r[0].r_offset += 2 * 4; |
794e51c0 | 11062 | p = build_plt_stub (htab, stub_entry, p, offset, r); |
407aa07c | 11063 | bfd_put_32 (obfd, BCTRL, p - 4); |
a7f2871e | 11064 | |
a078d95a | 11065 | bfd_put_32 (obfd, LD_R2_0R1 + STK_TOC (htab), p), p += 4; |
bd4d2eaa | 11066 | bfd_put_32 (obfd, LD_R11_0R1 + STK_LINKER (htab), p), p += 4; |
a7f2871e AM |
11067 | bfd_put_32 (obfd, MTLR_R11, p), p += 4; |
11068 | bfd_put_32 (obfd, BLR, p), p += 4; | |
11069 | ||
11070 | return p; | |
11071 | } | |
11072 | ||
176a0d42 AM |
11073 | static Elf_Internal_Rela * |
11074 | get_relocs (asection *sec, int count) | |
11075 | { | |
11076 | Elf_Internal_Rela *relocs; | |
11077 | struct bfd_elf_section_data *elfsec_data; | |
11078 | ||
11079 | elfsec_data = elf_section_data (sec); | |
11080 | relocs = elfsec_data->relocs; | |
11081 | if (relocs == NULL) | |
11082 | { | |
11083 | bfd_size_type relsize; | |
11084 | relsize = sec->reloc_count * sizeof (*relocs); | |
11085 | relocs = bfd_alloc (sec->owner, relsize); | |
11086 | if (relocs == NULL) | |
11087 | return NULL; | |
11088 | elfsec_data->relocs = relocs; | |
d4730f92 BS |
11089 | elfsec_data->rela.hdr = bfd_zalloc (sec->owner, |
11090 | sizeof (Elf_Internal_Shdr)); | |
11091 | if (elfsec_data->rela.hdr == NULL) | |
11092 | return NULL; | |
11093 | elfsec_data->rela.hdr->sh_size = (sec->reloc_count | |
11094 | * sizeof (Elf64_External_Rela)); | |
11095 | elfsec_data->rela.hdr->sh_entsize = sizeof (Elf64_External_Rela); | |
176a0d42 AM |
11096 | sec->reloc_count = 0; |
11097 | } | |
11098 | relocs += sec->reloc_count; | |
11099 | sec->reloc_count += count; | |
11100 | return relocs; | |
11101 | } | |
11102 | ||
aa374f67 | 11103 | static bfd_vma |
25f53a85 | 11104 | get_r2off (struct bfd_link_info *info, |
aa374f67 AM |
11105 | struct ppc_stub_hash_entry *stub_entry) |
11106 | { | |
25f53a85 | 11107 | struct ppc_link_hash_table *htab = ppc_hash_table (info); |
6f20ed8a | 11108 | bfd_vma r2off = htab->sec_info[stub_entry->target_section->id].toc_off; |
aa374f67 AM |
11109 | |
11110 | if (r2off == 0) | |
11111 | { | |
11112 | /* Support linking -R objects. Get the toc pointer from the | |
11113 | opd entry. */ | |
11114 | char buf[8]; | |
b9e5796b AM |
11115 | if (!htab->opd_abi) |
11116 | return r2off; | |
aa374f67 AM |
11117 | asection *opd = stub_entry->h->elf.root.u.def.section; |
11118 | bfd_vma opd_off = stub_entry->h->elf.root.u.def.value; | |
11119 | ||
11120 | if (strcmp (opd->name, ".opd") != 0 | |
11121 | || opd->reloc_count != 0) | |
11122 | { | |
c1c8c1ef | 11123 | info->callbacks->einfo (_("%P: cannot find opd entry toc for `%pT'\n"), |
25f53a85 | 11124 | stub_entry->h->elf.root.root.string); |
aa374f67 | 11125 | bfd_set_error (bfd_error_bad_value); |
a7c49797 | 11126 | return (bfd_vma) -1; |
aa374f67 AM |
11127 | } |
11128 | if (!bfd_get_section_contents (opd->owner, opd, buf, opd_off + 8, 8)) | |
a7c49797 | 11129 | return (bfd_vma) -1; |
aa374f67 | 11130 | r2off = bfd_get_64 (opd->owner, buf); |
25f53a85 | 11131 | r2off -= elf_gp (info->output_bfd); |
aa374f67 | 11132 | } |
6f20ed8a | 11133 | r2off -= htab->sec_info[stub_entry->group->link_sec->id].toc_off; |
aa374f67 AM |
11134 | return r2off; |
11135 | } | |
11136 | ||
b34976b6 | 11137 | static bfd_boolean |
4ce794b7 | 11138 | ppc_build_one_stub (struct bfd_hash_entry *gen_entry, void *in_arg) |
5d1634d7 | 11139 | { |
721956f4 AM |
11140 | struct ppc_stub_hash_entry *stub_entry; |
11141 | struct ppc_branch_hash_entry *br_entry; | |
5d1634d7 AM |
11142 | struct bfd_link_info *info; |
11143 | struct ppc_link_hash_table *htab; | |
721956f4 AM |
11144 | bfd_byte *loc; |
11145 | bfd_byte *p; | |
ee75fd95 | 11146 | bfd_vma dest, off; |
176a0d42 | 11147 | Elf_Internal_Rela *r; |
e054468f | 11148 | asection *plt; |
5d1634d7 | 11149 | |
721956f4 AM |
11150 | /* Massage our args to the form they really have. */ |
11151 | stub_entry = (struct ppc_stub_hash_entry *) gen_entry; | |
4ce794b7 | 11152 | info = in_arg; |
5d1634d7 | 11153 | |
5d1634d7 | 11154 | htab = ppc_hash_table (info); |
4dfe6ac6 NC |
11155 | if (htab == NULL) |
11156 | return FALSE; | |
5d1634d7 | 11157 | |
721956f4 | 11158 | /* Make a note of the offset within the stubs for this entry. */ |
6f20ed8a AM |
11159 | stub_entry->stub_offset = stub_entry->group->stub_sec->size; |
11160 | loc = stub_entry->group->stub_sec->contents + stub_entry->stub_offset; | |
721956f4 | 11161 | |
4ce794b7 | 11162 | htab->stub_count[stub_entry->stub_type - 1] += 1; |
721956f4 | 11163 | switch (stub_entry->stub_type) |
5d1634d7 | 11164 | { |
721956f4 | 11165 | case ppc_stub_long_branch: |
ad8e1ba5 | 11166 | case ppc_stub_long_branch_r2off: |
721956f4 | 11167 | /* Branches are relative. This is where we are going to. */ |
6911b7dc AM |
11168 | dest = (stub_entry->target_value |
11169 | + stub_entry->target_section->output_offset | |
11170 | + stub_entry->target_section->output_section->vma); | |
11171 | dest += PPC64_LOCAL_ENTRY_OFFSET (stub_entry->other); | |
11172 | off = dest; | |
5d1634d7 | 11173 | |
721956f4 AM |
11174 | /* And this is where we are coming from. */ |
11175 | off -= (stub_entry->stub_offset | |
6f20ed8a AM |
11176 | + stub_entry->group->stub_sec->output_offset |
11177 | + stub_entry->group->stub_sec->output_section->vma); | |
e86ce104 | 11178 | |
9e390558 | 11179 | p = loc; |
ac2df442 | 11180 | if (stub_entry->stub_type == ppc_stub_long_branch_r2off) |
ad8e1ba5 | 11181 | { |
25f53a85 | 11182 | bfd_vma r2off = get_r2off (info, stub_entry); |
ad8e1ba5 | 11183 | |
a7c49797 | 11184 | if (r2off == (bfd_vma) -1) |
aa374f67 AM |
11185 | { |
11186 | htab->stub_error = TRUE; | |
11187 | return FALSE; | |
11188 | } | |
9e390558 AM |
11189 | bfd_put_32 (htab->params->stub_bfd, STD_R2_0R1 + STK_TOC (htab), p); |
11190 | p += 4; | |
ac2df442 AM |
11191 | if (PPC_HA (r2off) != 0) |
11192 | { | |
e7d1c40c | 11193 | bfd_put_32 (htab->params->stub_bfd, |
9e390558 AM |
11194 | ADDIS_R2_R2 | PPC_HA (r2off), p); |
11195 | p += 4; | |
a7c49797 AM |
11196 | } |
11197 | if (PPC_LO (r2off) != 0) | |
11198 | { | |
11199 | bfd_put_32 (htab->params->stub_bfd, | |
9e390558 AM |
11200 | ADDI_R2_R2 | PPC_LO (r2off), p); |
11201 | p += 4; | |
ac2df442 | 11202 | } |
9e390558 | 11203 | off -= p - loc; |
ad8e1ba5 | 11204 | } |
9e390558 AM |
11205 | bfd_put_32 (htab->params->stub_bfd, B_DOT | (off & 0x3fffffc), p); |
11206 | p += 4; | |
ad8e1ba5 | 11207 | |
5c3dead3 AM |
11208 | if (off + (1 << 25) >= (bfd_vma) (1 << 26)) |
11209 | { | |
cf97bcb0 AM |
11210 | _bfd_error_handler |
11211 | (_("long branch stub `%s' offset overflow"), | |
bc30df16 | 11212 | stub_entry->root.string); |
5c3dead3 AM |
11213 | htab->stub_error = TRUE; |
11214 | return FALSE; | |
11215 | } | |
ee75fd95 AM |
11216 | |
11217 | if (info->emitrelocations) | |
11218 | { | |
6f20ed8a | 11219 | r = get_relocs (stub_entry->group->stub_sec, 1); |
176a0d42 AM |
11220 | if (r == NULL) |
11221 | return FALSE; | |
9e390558 | 11222 | r->r_offset = p - 4 - stub_entry->group->stub_sec->contents; |
ee75fd95 AM |
11223 | r->r_info = ELF64_R_INFO (0, R_PPC64_REL24); |
11224 | r->r_addend = dest; | |
11225 | if (stub_entry->h != NULL) | |
11226 | { | |
11227 | struct elf_link_hash_entry **hashes; | |
11228 | unsigned long symndx; | |
11229 | struct ppc_link_hash_entry *h; | |
11230 | ||
e7d1c40c | 11231 | hashes = elf_sym_hashes (htab->params->stub_bfd); |
ee75fd95 AM |
11232 | if (hashes == NULL) |
11233 | { | |
11234 | bfd_size_type hsize; | |
11235 | ||
11236 | hsize = (htab->stub_globals + 1) * sizeof (*hashes); | |
e7d1c40c | 11237 | hashes = bfd_zalloc (htab->params->stub_bfd, hsize); |
ee75fd95 AM |
11238 | if (hashes == NULL) |
11239 | return FALSE; | |
e7d1c40c | 11240 | elf_sym_hashes (htab->params->stub_bfd) = hashes; |
ee75fd95 AM |
11241 | htab->stub_globals = 1; |
11242 | } | |
11243 | symndx = htab->stub_globals++; | |
11244 | h = stub_entry->h; | |
11245 | hashes[symndx] = &h->elf; | |
11246 | r->r_info = ELF64_R_INFO (symndx, R_PPC64_REL24); | |
11247 | if (h->oh != NULL && h->oh->is_func) | |
b31867b6 | 11248 | h = ppc_follow_link (h->oh); |
ee75fd95 AM |
11249 | if (h->elf.root.u.def.section != stub_entry->target_section) |
11250 | /* H is an opd symbol. The addend must be zero. */ | |
11251 | r->r_addend = 0; | |
11252 | else | |
11253 | { | |
11254 | off = (h->elf.root.u.def.value | |
11255 | + h->elf.root.u.def.section->output_offset | |
11256 | + h->elf.root.u.def.section->output_section->vma); | |
11257 | r->r_addend -= off; | |
11258 | } | |
11259 | } | |
11260 | } | |
721956f4 | 11261 | break; |
e86ce104 | 11262 | |
721956f4 | 11263 | case ppc_stub_plt_branch: |
ad8e1ba5 | 11264 | case ppc_stub_plt_branch_r2off: |
721956f4 AM |
11265 | br_entry = ppc_branch_hash_lookup (&htab->branch_hash_table, |
11266 | stub_entry->root.string + 9, | |
b34976b6 | 11267 | FALSE, FALSE); |
721956f4 AM |
11268 | if (br_entry == NULL) |
11269 | { | |
cf97bcb0 AM |
11270 | _bfd_error_handler (_("can't find branch stub `%s'"), |
11271 | stub_entry->root.string); | |
b34976b6 AM |
11272 | htab->stub_error = TRUE; |
11273 | return FALSE; | |
721956f4 AM |
11274 | } |
11275 | ||
176a0d42 AM |
11276 | dest = (stub_entry->target_value |
11277 | + stub_entry->target_section->output_offset | |
11278 | + stub_entry->target_section->output_section->vma); | |
6911b7dc AM |
11279 | if (stub_entry->stub_type != ppc_stub_plt_branch_r2off) |
11280 | dest += PPC64_LOCAL_ENTRY_OFFSET (stub_entry->other); | |
721956f4 | 11281 | |
176a0d42 | 11282 | bfd_put_64 (htab->brlt->owner, dest, |
4ce794b7 | 11283 | htab->brlt->contents + br_entry->offset); |
721956f4 | 11284 | |
f94498ff | 11285 | if (br_entry->iter == htab->stub_iteration) |
721956f4 | 11286 | { |
f94498ff | 11287 | br_entry->iter = 0; |
84f5d08e | 11288 | |
f94498ff | 11289 | if (htab->relbrlt != NULL) |
84f5d08e | 11290 | { |
f94498ff AM |
11291 | /* Create a reloc for the branch lookup table entry. */ |
11292 | Elf_Internal_Rela rela; | |
11293 | bfd_byte *rl; | |
11294 | ||
11295 | rela.r_offset = (br_entry->offset | |
11296 | + htab->brlt->output_offset | |
11297 | + htab->brlt->output_section->vma); | |
11298 | rela.r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE); | |
176a0d42 | 11299 | rela.r_addend = dest; |
f94498ff AM |
11300 | |
11301 | rl = htab->relbrlt->contents; | |
11302 | rl += (htab->relbrlt->reloc_count++ | |
11303 | * sizeof (Elf64_External_Rela)); | |
11304 | bfd_elf64_swap_reloca_out (htab->relbrlt->owner, &rela, rl); | |
11305 | } | |
11306 | else if (info->emitrelocations) | |
11307 | { | |
176a0d42 AM |
11308 | r = get_relocs (htab->brlt, 1); |
11309 | if (r == NULL) | |
11310 | return FALSE; | |
11311 | /* brlt, being SEC_LINKER_CREATED does not go through the | |
11312 | normal reloc processing. Symbols and offsets are not | |
11313 | translated from input file to output file form, so | |
11314 | set up the offset per the output file. */ | |
f94498ff AM |
11315 | r->r_offset = (br_entry->offset |
11316 | + htab->brlt->output_offset | |
11317 | + htab->brlt->output_section->vma); | |
11318 | r->r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE); | |
176a0d42 | 11319 | r->r_addend = dest; |
84f5d08e | 11320 | } |
84f5d08e | 11321 | } |
721956f4 | 11322 | |
176a0d42 AM |
11323 | dest = (br_entry->offset |
11324 | + htab->brlt->output_offset | |
11325 | + htab->brlt->output_section->vma); | |
11326 | ||
11327 | off = (dest | |
06bcf541 | 11328 | - elf_gp (info->output_bfd) |
6f20ed8a | 11329 | - htab->sec_info[stub_entry->group->link_sec->id].toc_off); |
721956f4 | 11330 | |
ad8e1ba5 | 11331 | if (off + 0x80008000 > 0xffffffff || (off & 7) != 0) |
5d1634d7 | 11332 | { |
25f53a85 | 11333 | info->callbacks->einfo |
c1c8c1ef | 11334 | (_("%P: linkage table error against `%pT'\n"), |
721956f4 | 11335 | stub_entry->root.string); |
5d1634d7 | 11336 | bfd_set_error (bfd_error_bad_value); |
b34976b6 AM |
11337 | htab->stub_error = TRUE; |
11338 | return FALSE; | |
5d1634d7 | 11339 | } |
41bd81ab | 11340 | |
176a0d42 AM |
11341 | if (info->emitrelocations) |
11342 | { | |
6f20ed8a | 11343 | r = get_relocs (stub_entry->group->stub_sec, 1 + (PPC_HA (off) != 0)); |
176a0d42 AM |
11344 | if (r == NULL) |
11345 | return FALSE; | |
6f20ed8a | 11346 | r[0].r_offset = loc - stub_entry->group->stub_sec->contents; |
7cfbafbc AM |
11347 | if (bfd_big_endian (info->output_bfd)) |
11348 | r[0].r_offset += 2; | |
00f412ee | 11349 | if (stub_entry->stub_type == ppc_stub_plt_branch_r2off) |
176a0d42 AM |
11350 | r[0].r_offset += 4; |
11351 | r[0].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_DS); | |
11352 | r[0].r_addend = dest; | |
11353 | if (PPC_HA (off) != 0) | |
11354 | { | |
11355 | r[0].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_HA); | |
11356 | r[1].r_offset = r[0].r_offset + 4; | |
11357 | r[1].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS); | |
11358 | r[1].r_addend = r[0].r_addend; | |
11359 | } | |
11360 | } | |
11361 | ||
9e390558 | 11362 | p = loc; |
00f412ee | 11363 | if (stub_entry->stub_type != ppc_stub_plt_branch_r2off) |
ad8e1ba5 | 11364 | { |
176a0d42 | 11365 | if (PPC_HA (off) != 0) |
ac2df442 | 11366 | { |
e7d1c40c | 11367 | bfd_put_32 (htab->params->stub_bfd, |
9e390558 AM |
11368 | ADDIS_R12_R2 | PPC_HA (off), p); |
11369 | p += 4; | |
e7d1c40c | 11370 | bfd_put_32 (htab->params->stub_bfd, |
9e390558 | 11371 | LD_R12_0R12 | PPC_LO (off), p); |
ac2df442 AM |
11372 | } |
11373 | else | |
9e390558 AM |
11374 | bfd_put_32 (htab->params->stub_bfd, |
11375 | LD_R12_0R2 | PPC_LO (off), p); | |
ad8e1ba5 AM |
11376 | } |
11377 | else | |
11378 | { | |
25f53a85 | 11379 | bfd_vma r2off = get_r2off (info, stub_entry); |
aa374f67 | 11380 | |
a7c49797 | 11381 | if (r2off == (bfd_vma) -1) |
aa374f67 AM |
11382 | { |
11383 | htab->stub_error = TRUE; | |
11384 | return FALSE; | |
11385 | } | |
ad8e1ba5 | 11386 | |
9e390558 AM |
11387 | bfd_put_32 (htab->params->stub_bfd, STD_R2_0R1 + STK_TOC (htab), p); |
11388 | p += 4; | |
176a0d42 | 11389 | if (PPC_HA (off) != 0) |
ac2df442 | 11390 | { |
e7d1c40c | 11391 | bfd_put_32 (htab->params->stub_bfd, |
9e390558 AM |
11392 | ADDIS_R12_R2 | PPC_HA (off), p); |
11393 | p += 4; | |
e7d1c40c | 11394 | bfd_put_32 (htab->params->stub_bfd, |
9e390558 | 11395 | LD_R12_0R12 | PPC_LO (off), p); |
ac2df442 AM |
11396 | } |
11397 | else | |
9e390558 | 11398 | bfd_put_32 (htab->params->stub_bfd, LD_R12_0R2 | PPC_LO (off), p); |
ac2df442 AM |
11399 | |
11400 | if (PPC_HA (r2off) != 0) | |
11401 | { | |
9e390558 | 11402 | p += 4; |
e7d1c40c | 11403 | bfd_put_32 (htab->params->stub_bfd, |
9e390558 | 11404 | ADDIS_R2_R2 | PPC_HA (r2off), p); |
00f412ee AM |
11405 | } |
11406 | if (PPC_LO (r2off) != 0) | |
11407 | { | |
9e390558 | 11408 | p += 4; |
e7d1c40c | 11409 | bfd_put_32 (htab->params->stub_bfd, |
9e390558 | 11410 | ADDI_R2_R2 | PPC_LO (r2off), p); |
ac2df442 | 11411 | } |
ad8e1ba5 | 11412 | } |
9e390558 AM |
11413 | p += 4; |
11414 | bfd_put_32 (htab->params->stub_bfd, MTCTR_R12, p); | |
11415 | p += 4; | |
407aa07c AM |
11416 | bfd_put_32 (htab->params->stub_bfd, BCTR, p); |
11417 | p += 4; | |
721956f4 | 11418 | break; |
5d1634d7 | 11419 | |
721956f4 | 11420 | case ppc_stub_plt_call: |
794e51c0 | 11421 | case ppc_stub_plt_call_r2save: |
e054468f | 11422 | if (stub_entry->h != NULL |
b31867b6 AM |
11423 | && stub_entry->h->is_func_descriptor |
11424 | && stub_entry->h->oh != NULL) | |
c862ae31 | 11425 | { |
b31867b6 AM |
11426 | struct ppc_link_hash_entry *fh = ppc_follow_link (stub_entry->h->oh); |
11427 | ||
11428 | /* If the old-ABI "dot-symbol" is undefined make it weak so | |
6f20ed8a | 11429 | we don't get a link error from RELOC_FOR_GLOBAL_SYMBOL. */ |
8c5b4e52 AM |
11430 | if (fh->elf.root.type == bfd_link_hash_undefined |
11431 | && (stub_entry->h->elf.root.type == bfd_link_hash_defined | |
11432 | || stub_entry->h->elf.root.type == bfd_link_hash_defweak)) | |
b31867b6 | 11433 | fh->elf.root.type = bfd_link_hash_undefweak; |
c862ae31 AM |
11434 | } |
11435 | ||
721956f4 | 11436 | /* Now build the stub. */ |
e054468f | 11437 | dest = stub_entry->plt_ent->plt.offset & ~1; |
176a0d42 | 11438 | if (dest >= (bfd_vma) -2) |
721956f4 AM |
11439 | abort (); |
11440 | ||
33e44f2e | 11441 | plt = htab->elf.splt; |
25f23106 AM |
11442 | if (!htab->elf.dynamic_sections_created |
11443 | || stub_entry->h == NULL | |
11444 | || stub_entry->h->elf.dynindx == -1) | |
2d7ad24e AM |
11445 | { |
11446 | if (stub_entry->symtype == STT_GNU_IFUNC) | |
11447 | plt = htab->elf.iplt; | |
11448 | else | |
11449 | plt = htab->pltlocal; | |
11450 | } | |
e054468f AM |
11451 | |
11452 | dest += plt->output_offset + plt->output_section->vma; | |
11453 | ||
176a0d42 | 11454 | off = (dest |
06bcf541 | 11455 | - elf_gp (info->output_bfd) |
6f20ed8a | 11456 | - htab->sec_info[stub_entry->group->link_sec->id].toc_off); |
721956f4 | 11457 | |
ad8e1ba5 | 11458 | if (off + 0x80008000 > 0xffffffff || (off & 7) != 0) |
721956f4 | 11459 | { |
25f53a85 | 11460 | info->callbacks->einfo |
695344c0 | 11461 | /* xgettext:c-format */ |
c1c8c1ef | 11462 | (_("%P: linkage table error against `%pT'\n"), |
e054468f AM |
11463 | stub_entry->h != NULL |
11464 | ? stub_entry->h->elf.root.root.string | |
11465 | : "<local sym>"); | |
721956f4 | 11466 | bfd_set_error (bfd_error_bad_value); |
b34976b6 AM |
11467 | htab->stub_error = TRUE; |
11468 | return FALSE; | |
721956f4 AM |
11469 | } |
11470 | ||
e7d1c40c | 11471 | if (htab->params->plt_stub_align != 0) |
794e51c0 AM |
11472 | { |
11473 | unsigned pad = plt_stub_pad (htab, stub_entry, off); | |
11474 | ||
6f20ed8a AM |
11475 | stub_entry->group->stub_sec->size += pad; |
11476 | stub_entry->stub_offset = stub_entry->group->stub_sec->size; | |
794e51c0 AM |
11477 | loc += pad; |
11478 | } | |
11479 | ||
176a0d42 AM |
11480 | r = NULL; |
11481 | if (info->emitrelocations) | |
11482 | { | |
6f20ed8a | 11483 | r = get_relocs (stub_entry->group->stub_sec, |
3ba720c7 AM |
11484 | ((PPC_HA (off) != 0) |
11485 | + (htab->opd_abi | |
e7d1c40c | 11486 | ? 2 + (htab->params->plt_static_chain |
3ba720c7 AM |
11487 | && PPC_HA (off + 16) == PPC_HA (off)) |
11488 | : 1))); | |
176a0d42 AM |
11489 | if (r == NULL) |
11490 | return FALSE; | |
6f20ed8a | 11491 | r[0].r_offset = loc - stub_entry->group->stub_sec->contents; |
7cfbafbc AM |
11492 | if (bfd_big_endian (info->output_bfd)) |
11493 | r[0].r_offset += 2; | |
176a0d42 AM |
11494 | r[0].r_addend = dest; |
11495 | } | |
a7f2871e AM |
11496 | if (stub_entry->h != NULL |
11497 | && (stub_entry->h == htab->tls_get_addr_fd | |
11498 | || stub_entry->h == htab->tls_get_addr) | |
7c9cf415 | 11499 | && htab->params->tls_get_addr_opt) |
794e51c0 | 11500 | p = build_tls_get_addr_stub (htab, stub_entry, loc, off, r); |
a7f2871e | 11501 | else |
794e51c0 | 11502 | p = build_plt_stub (htab, stub_entry, loc, off, r); |
721956f4 AM |
11503 | break; |
11504 | ||
a4b6fadd AM |
11505 | case ppc_stub_save_res: |
11506 | return TRUE; | |
11507 | ||
721956f4 AM |
11508 | default: |
11509 | BFD_FAIL (); | |
b34976b6 | 11510 | return FALSE; |
721956f4 AM |
11511 | } |
11512 | ||
9e390558 | 11513 | stub_entry->group->stub_sec->size += p - loc; |
97b639ba | 11514 | |
e7d1c40c | 11515 | if (htab->params->emit_stub_syms) |
97b639ba AM |
11516 | { |
11517 | struct elf_link_hash_entry *h; | |
ee75fd95 AM |
11518 | size_t len1, len2; |
11519 | char *name; | |
11520 | const char *const stub_str[] = { "long_branch", | |
11521 | "long_branch_r2off", | |
11522 | "plt_branch", | |
11523 | "plt_branch_r2off", | |
794e51c0 | 11524 | "plt_call", |
ee75fd95 AM |
11525 | "plt_call" }; |
11526 | ||
11527 | len1 = strlen (stub_str[stub_entry->stub_type - 1]); | |
11528 | len2 = strlen (stub_entry->root.string); | |
11529 | name = bfd_malloc (len1 + len2 + 2); | |
11530 | if (name == NULL) | |
11531 | return FALSE; | |
11532 | memcpy (name, stub_entry->root.string, 9); | |
11533 | memcpy (name + 9, stub_str[stub_entry->stub_type - 1], len1); | |
11534 | memcpy (name + len1 + 9, stub_entry->root.string + 8, len2 - 8 + 1); | |
11535 | h = elf_link_hash_lookup (&htab->elf, name, TRUE, FALSE, FALSE); | |
97b639ba AM |
11536 | if (h == NULL) |
11537 | return FALSE; | |
11538 | if (h->root.type == bfd_link_hash_new) | |
11539 | { | |
11540 | h->root.type = bfd_link_hash_defined; | |
6f20ed8a | 11541 | h->root.u.def.section = stub_entry->group->stub_sec; |
97b639ba | 11542 | h->root.u.def.value = stub_entry->stub_offset; |
f5385ebf AM |
11543 | h->ref_regular = 1; |
11544 | h->def_regular = 1; | |
11545 | h->ref_regular_nonweak = 1; | |
11546 | h->forced_local = 1; | |
11547 | h->non_elf = 0; | |
2ec55de3 | 11548 | h->root.linker_def = 1; |
97b639ba AM |
11549 | } |
11550 | } | |
11551 | ||
b34976b6 | 11552 | return TRUE; |
721956f4 AM |
11553 | } |
11554 | ||
11555 | /* As above, but don't actually build the stub. Just bump offset so | |
11556 | we know stub section sizes, and select plt_branch stubs where | |
11557 | long_branch stubs won't do. */ | |
11558 | ||
b34976b6 | 11559 | static bfd_boolean |
4ce794b7 | 11560 | ppc_size_one_stub (struct bfd_hash_entry *gen_entry, void *in_arg) |
721956f4 AM |
11561 | { |
11562 | struct ppc_stub_hash_entry *stub_entry; | |
63bc6f6c | 11563 | struct bfd_link_info *info; |
721956f4 AM |
11564 | struct ppc_link_hash_table *htab; |
11565 | bfd_vma off; | |
11566 | int size; | |
11567 | ||
11568 | /* Massage our args to the form they really have. */ | |
11569 | stub_entry = (struct ppc_stub_hash_entry *) gen_entry; | |
63bc6f6c AM |
11570 | info = in_arg; |
11571 | ||
11572 | htab = ppc_hash_table (info); | |
4dfe6ac6 NC |
11573 | if (htab == NULL) |
11574 | return FALSE; | |
721956f4 | 11575 | |
a4b6fadd AM |
11576 | if (stub_entry->h != NULL |
11577 | && stub_entry->h->save_res | |
11578 | && stub_entry->h->elf.root.type == bfd_link_hash_defined | |
11579 | && stub_entry->h->elf.root.u.def.section == htab->sfpr) | |
11580 | { | |
11581 | /* Don't make stubs to out-of-line register save/restore | |
11582 | functions. Instead, emit copies of the functions. */ | |
11583 | stub_entry->group->needs_save_res = 1; | |
11584 | stub_entry->stub_type = ppc_stub_save_res; | |
11585 | return TRUE; | |
11586 | } | |
11587 | ||
794e51c0 AM |
11588 | if (stub_entry->stub_type == ppc_stub_plt_call |
11589 | || stub_entry->stub_type == ppc_stub_plt_call_r2save) | |
721956f4 | 11590 | { |
e054468f AM |
11591 | asection *plt; |
11592 | off = stub_entry->plt_ent->plt.offset & ~(bfd_vma) 1; | |
58ac9f71 | 11593 | if (off >= (bfd_vma) -2) |
411e1bfb | 11594 | abort (); |
33e44f2e | 11595 | plt = htab->elf.splt; |
25f23106 AM |
11596 | if (!htab->elf.dynamic_sections_created |
11597 | || stub_entry->h == NULL | |
11598 | || stub_entry->h->elf.dynindx == -1) | |
2d7ad24e AM |
11599 | { |
11600 | if (stub_entry->symtype == STT_GNU_IFUNC) | |
11601 | plt = htab->elf.iplt; | |
11602 | else | |
11603 | plt = htab->pltlocal; | |
11604 | } | |
e054468f AM |
11605 | off += (plt->output_offset |
11606 | + plt->output_section->vma | |
06bcf541 | 11607 | - elf_gp (info->output_bfd) |
6f20ed8a | 11608 | - htab->sec_info[stub_entry->group->link_sec->id].toc_off); |
721956f4 | 11609 | |
794e51c0 | 11610 | size = plt_stub_size (htab, stub_entry, off); |
d4aaa2a0 AM |
11611 | if (stub_entry->h != NULL |
11612 | && (stub_entry->h == htab->tls_get_addr_fd | |
11613 | || stub_entry->h == htab->tls_get_addr) | |
11614 | && htab->params->tls_get_addr_opt | |
11615 | && (ALWAYS_EMIT_R2SAVE | |
11616 | || stub_entry->stub_type == ppc_stub_plt_call_r2save)) | |
11617 | stub_entry->group->tls_get_addr_opt_bctrl | |
11618 | = stub_entry->group->stub_sec->size + size - 5 * 4; | |
11619 | ||
e7d1c40c | 11620 | if (htab->params->plt_stub_align) |
794e51c0 | 11621 | size += plt_stub_pad (htab, stub_entry, off); |
176a0d42 AM |
11622 | if (info->emitrelocations) |
11623 | { | |
6f20ed8a | 11624 | stub_entry->group->stub_sec->reloc_count |
b9e5796b AM |
11625 | += ((PPC_HA (off) != 0) |
11626 | + (htab->opd_abi | |
e7d1c40c | 11627 | ? 2 + (htab->params->plt_static_chain |
b9e5796b AM |
11628 | && PPC_HA (off + 16) == PPC_HA (off)) |
11629 | : 1)); | |
6f20ed8a | 11630 | stub_entry->group->stub_sec->flags |= SEC_RELOC; |
176a0d42 | 11631 | } |
721956f4 AM |
11632 | } |
11633 | else | |
11634 | { | |
ad8e1ba5 AM |
11635 | /* ppc_stub_long_branch or ppc_stub_plt_branch, or their r2off |
11636 | variants. */ | |
ac2df442 | 11637 | bfd_vma r2off = 0; |
6911b7dc | 11638 | bfd_vma local_off = 0; |
ac2df442 | 11639 | |
721956f4 AM |
11640 | off = (stub_entry->target_value |
11641 | + stub_entry->target_section->output_offset | |
11642 | + stub_entry->target_section->output_section->vma); | |
6f20ed8a AM |
11643 | off -= (stub_entry->group->stub_sec->size |
11644 | + stub_entry->group->stub_sec->output_offset | |
11645 | + stub_entry->group->stub_sec->output_section->vma); | |
721956f4 | 11646 | |
ad8e1ba5 AM |
11647 | /* Reset the stub type from the plt variant in case we now |
11648 | can reach with a shorter stub. */ | |
11649 | if (stub_entry->stub_type >= ppc_stub_plt_branch) | |
11650 | stub_entry->stub_type += ppc_stub_long_branch - ppc_stub_plt_branch; | |
11651 | ||
11652 | size = 4; | |
11653 | if (stub_entry->stub_type == ppc_stub_long_branch_r2off) | |
11654 | { | |
25f53a85 | 11655 | r2off = get_r2off (info, stub_entry); |
a7c49797 | 11656 | if (r2off == (bfd_vma) -1) |
aa374f67 AM |
11657 | { |
11658 | htab->stub_error = TRUE; | |
11659 | return FALSE; | |
11660 | } | |
a7c49797 | 11661 | size = 8; |
ac2df442 | 11662 | if (PPC_HA (r2off) != 0) |
a7c49797 AM |
11663 | size += 4; |
11664 | if (PPC_LO (r2off) != 0) | |
11665 | size += 4; | |
ac2df442 | 11666 | off -= size - 4; |
ad8e1ba5 AM |
11667 | } |
11668 | ||
6911b7dc AM |
11669 | local_off = PPC64_LOCAL_ENTRY_OFFSET (stub_entry->other); |
11670 | ||
6a3858a6 | 11671 | /* If the branch offset is too big, use a ppc_stub_plt_branch. |
b9e5796b AM |
11672 | Do the same for -R objects without function descriptors. */ |
11673 | if (off + (1 << 25) >= (bfd_vma) (1 << 26) - local_off | |
11674 | || (stub_entry->stub_type == ppc_stub_long_branch_r2off | |
a7c49797 AM |
11675 | && r2off == 0 |
11676 | && htab->sec_info[stub_entry->target_section->id].toc_off == 0)) | |
721956f4 AM |
11677 | { |
11678 | struct ppc_branch_hash_entry *br_entry; | |
11679 | ||
11680 | br_entry = ppc_branch_hash_lookup (&htab->branch_hash_table, | |
11681 | stub_entry->root.string + 9, | |
b34976b6 | 11682 | TRUE, FALSE); |
721956f4 AM |
11683 | if (br_entry == NULL) |
11684 | { | |
cf97bcb0 AM |
11685 | _bfd_error_handler (_("can't build branch stub `%s'"), |
11686 | stub_entry->root.string); | |
b34976b6 AM |
11687 | htab->stub_error = TRUE; |
11688 | return FALSE; | |
721956f4 AM |
11689 | } |
11690 | ||
11691 | if (br_entry->iter != htab->stub_iteration) | |
11692 | { | |
11693 | br_entry->iter = htab->stub_iteration; | |
eea6121a AM |
11694 | br_entry->offset = htab->brlt->size; |
11695 | htab->brlt->size += 8; | |
63bc6f6c | 11696 | |
ee75fd95 | 11697 | if (htab->relbrlt != NULL) |
eea6121a | 11698 | htab->relbrlt->size += sizeof (Elf64_External_Rela); |
84f5d08e AM |
11699 | else if (info->emitrelocations) |
11700 | { | |
11701 | htab->brlt->reloc_count += 1; | |
11702 | htab->brlt->flags |= SEC_RELOC; | |
11703 | } | |
721956f4 | 11704 | } |
ad8e1ba5 AM |
11705 | |
11706 | stub_entry->stub_type += ppc_stub_plt_branch - ppc_stub_long_branch; | |
ac2df442 AM |
11707 | off = (br_entry->offset |
11708 | + htab->brlt->output_offset | |
11709 | + htab->brlt->output_section->vma | |
06bcf541 | 11710 | - elf_gp (info->output_bfd) |
6f20ed8a | 11711 | - htab->sec_info[stub_entry->group->link_sec->id].toc_off); |
ac2df442 | 11712 | |
176a0d42 AM |
11713 | if (info->emitrelocations) |
11714 | { | |
6f20ed8a AM |
11715 | stub_entry->group->stub_sec->reloc_count |
11716 | += 1 + (PPC_HA (off) != 0); | |
11717 | stub_entry->group->stub_sec->flags |= SEC_RELOC; | |
176a0d42 AM |
11718 | } |
11719 | ||
00f412ee | 11720 | if (stub_entry->stub_type != ppc_stub_plt_branch_r2off) |
ac2df442 AM |
11721 | { |
11722 | size = 12; | |
176a0d42 | 11723 | if (PPC_HA (off) != 0) |
ac2df442 AM |
11724 | size = 16; |
11725 | } | |
11726 | else | |
11727 | { | |
00f412ee | 11728 | size = 16; |
176a0d42 | 11729 | if (PPC_HA (off) != 0) |
ac2df442 AM |
11730 | size += 4; |
11731 | ||
11732 | if (PPC_HA (r2off) != 0) | |
11733 | size += 4; | |
00f412ee AM |
11734 | if (PPC_LO (r2off) != 0) |
11735 | size += 4; | |
ac2df442 | 11736 | } |
721956f4 | 11737 | } |
84f5d08e AM |
11738 | else if (info->emitrelocations) |
11739 | { | |
6f20ed8a AM |
11740 | stub_entry->group->stub_sec->reloc_count += 1; |
11741 | stub_entry->group->stub_sec->flags |= SEC_RELOC; | |
84f5d08e | 11742 | } |
721956f4 AM |
11743 | } |
11744 | ||
6f20ed8a | 11745 | stub_entry->group->stub_sec->size += size; |
b34976b6 | 11746 | return TRUE; |
721956f4 AM |
11747 | } |
11748 | ||
11749 | /* Set up various things so that we can make a list of input sections | |
11750 | for each output section included in the link. Returns -1 on error, | |
cedb70c5 | 11751 | 0 when no stubs will be needed, and 1 on success. */ |
721956f4 AM |
11752 | |
11753 | int | |
e7d1c40c | 11754 | ppc64_elf_setup_section_lists (struct bfd_link_info *info) |
721956f4 | 11755 | { |
6f20ed8a | 11756 | unsigned int id; |
721956f4 AM |
11757 | bfd_size_type amt; |
11758 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
11759 | ||
4dfe6ac6 NC |
11760 | if (htab == NULL) |
11761 | return -1; | |
4c52953f | 11762 | |
7cf7fcc8 | 11763 | htab->sec_info_arr_size = _bfd_section_id; |
6f20ed8a AM |
11764 | amt = sizeof (*htab->sec_info) * (htab->sec_info_arr_size); |
11765 | htab->sec_info = bfd_zmalloc (amt); | |
11766 | if (htab->sec_info == NULL) | |
721956f4 AM |
11767 | return -1; |
11768 | ||
3d6f9012 AM |
11769 | /* Set toc_off for com, und, abs and ind sections. */ |
11770 | for (id = 0; id < 3; id++) | |
6f20ed8a | 11771 | htab->sec_info[id].toc_off = TOC_BASE_OFF; |
734b6cf9 | 11772 | |
721956f4 AM |
11773 | return 1; |
11774 | } | |
11775 | ||
927be08e AM |
11776 | /* Set up for first pass at multitoc partitioning. */ |
11777 | ||
11778 | void | |
11779 | ppc64_elf_start_multitoc_partition (struct bfd_link_info *info) | |
11780 | { | |
11781 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
11782 | ||
1c865ab2 | 11783 | htab->toc_curr = ppc64_elf_set_toc (info, info->output_bfd); |
927be08e AM |
11784 | htab->toc_bfd = NULL; |
11785 | htab->toc_first_sec = NULL; | |
11786 | } | |
11787 | ||
e717da7e AM |
11788 | /* The linker repeatedly calls this function for each TOC input section |
11789 | and linker generated GOT section. Group input bfds such that the toc | |
927be08e | 11790 | within a group is less than 64k in size. */ |
ad8e1ba5 | 11791 | |
927be08e | 11792 | bfd_boolean |
4ce794b7 | 11793 | ppc64_elf_next_toc_section (struct bfd_link_info *info, asection *isec) |
ad8e1ba5 AM |
11794 | { |
11795 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
d77c8a4b | 11796 | bfd_vma addr, off, limit; |
ad8e1ba5 | 11797 | |
4dfe6ac6 NC |
11798 | if (htab == NULL) |
11799 | return FALSE; | |
11800 | ||
927be08e | 11801 | if (!htab->second_toc_pass) |
4c52953f | 11802 | { |
927be08e | 11803 | /* Keep track of the first .toc or .got section for this input bfd. */ |
a4fd3de5 AM |
11804 | bfd_boolean new_bfd = htab->toc_bfd != isec->owner; |
11805 | ||
11806 | if (new_bfd) | |
bf102f86 AM |
11807 | { |
11808 | htab->toc_bfd = isec->owner; | |
11809 | htab->toc_first_sec = isec; | |
11810 | } | |
927be08e | 11811 | |
bf102f86 AM |
11812 | addr = isec->output_offset + isec->output_section->vma; |
11813 | off = addr - htab->toc_curr; | |
d77c8a4b AM |
11814 | limit = 0x80008000; |
11815 | if (ppc64_elf_tdata (isec->owner)->has_small_toc_reloc) | |
11816 | limit = 0x10000; | |
11817 | if (off + isec->size > limit) | |
bf102f86 AM |
11818 | { |
11819 | addr = (htab->toc_first_sec->output_offset | |
11820 | + htab->toc_first_sec->output_section->vma); | |
11821 | htab->toc_curr = addr; | |
a27e685f | 11822 | htab->toc_curr &= -TOC_BASE_ALIGN; |
bf102f86 | 11823 | } |
99877b66 | 11824 | |
927be08e AM |
11825 | /* toc_curr is the base address of this toc group. Set elf_gp |
11826 | for the input section to be the offset relative to the | |
11827 | output toc base plus 0x8000. Making the input elf_gp an | |
11828 | offset allows us to move the toc as a whole without | |
11829 | recalculating input elf_gp. */ | |
06bcf541 | 11830 | off = htab->toc_curr - elf_gp (info->output_bfd); |
927be08e AM |
11831 | off += TOC_BASE_OFF; |
11832 | ||
11833 | /* Die if someone uses a linker script that doesn't keep input | |
11834 | file .toc and .got together. */ | |
a4fd3de5 AM |
11835 | if (new_bfd |
11836 | && elf_gp (isec->owner) != 0 | |
927be08e AM |
11837 | && elf_gp (isec->owner) != off) |
11838 | return FALSE; | |
11839 | ||
11840 | elf_gp (isec->owner) = off; | |
11841 | return TRUE; | |
4c52953f | 11842 | } |
927be08e AM |
11843 | |
11844 | /* During the second pass toc_first_sec points to the start of | |
11845 | a toc group, and toc_curr is used to track the old elf_gp. | |
11846 | We use toc_bfd to ensure we only look at each bfd once. */ | |
11847 | if (htab->toc_bfd == isec->owner) | |
11848 | return TRUE; | |
11849 | htab->toc_bfd = isec->owner; | |
11850 | ||
11851 | if (htab->toc_first_sec == NULL | |
11852 | || htab->toc_curr != elf_gp (isec->owner)) | |
11853 | { | |
11854 | htab->toc_curr = elf_gp (isec->owner); | |
11855 | htab->toc_first_sec = isec; | |
11856 | } | |
11857 | addr = (htab->toc_first_sec->output_offset | |
11858 | + htab->toc_first_sec->output_section->vma); | |
06bcf541 | 11859 | off = addr - elf_gp (info->output_bfd) + TOC_BASE_OFF; |
927be08e AM |
11860 | elf_gp (isec->owner) = off; |
11861 | ||
11862 | return TRUE; | |
ad8e1ba5 AM |
11863 | } |
11864 | ||
927be08e AM |
11865 | /* Called via elf_link_hash_traverse to merge GOT entries for global |
11866 | symbol H. */ | |
11867 | ||
11868 | static bfd_boolean | |
11869 | merge_global_got (struct elf_link_hash_entry *h, void *inf ATTRIBUTE_UNUSED) | |
11870 | { | |
11871 | if (h->root.type == bfd_link_hash_indirect) | |
11872 | return TRUE; | |
11873 | ||
927be08e AM |
11874 | merge_got_entries (&h->got.glist); |
11875 | ||
11876 | return TRUE; | |
11877 | } | |
11878 | ||
11879 | /* Called via elf_link_hash_traverse to allocate GOT entries for global | |
11880 | symbol H. */ | |
11881 | ||
11882 | static bfd_boolean | |
11883 | reallocate_got (struct elf_link_hash_entry *h, void *inf) | |
11884 | { | |
11885 | struct got_entry *gent; | |
11886 | ||
11887 | if (h->root.type == bfd_link_hash_indirect) | |
11888 | return TRUE; | |
11889 | ||
927be08e AM |
11890 | for (gent = h->got.glist; gent != NULL; gent = gent->next) |
11891 | if (!gent->is_indirect) | |
11892 | allocate_got (h, (struct bfd_link_info *) inf, gent); | |
11893 | return TRUE; | |
11894 | } | |
11895 | ||
11896 | /* Called on the first multitoc pass after the last call to | |
11897 | ppc64_elf_next_toc_section. This function removes duplicate GOT | |
11898 | entries. */ | |
11899 | ||
11900 | bfd_boolean | |
11901 | ppc64_elf_layout_multitoc (struct bfd_link_info *info) | |
ad8e1ba5 AM |
11902 | { |
11903 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
927be08e AM |
11904 | struct bfd *ibfd, *ibfd2; |
11905 | bfd_boolean done_something; | |
11906 | ||
11907 | htab->multi_toc_needed = htab->toc_curr != elf_gp (info->output_bfd); | |
ad8e1ba5 | 11908 | |
7865406b AM |
11909 | if (!htab->do_multi_toc) |
11910 | return FALSE; | |
11911 | ||
d0fae19d | 11912 | /* Merge global sym got entries within a toc group. */ |
927be08e AM |
11913 | elf_link_hash_traverse (&htab->elf, merge_global_got, info); |
11914 | ||
11915 | /* And tlsld_got. */ | |
c72f2fb2 | 11916 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next) |
927be08e AM |
11917 | { |
11918 | struct got_entry *ent, *ent2; | |
11919 | ||
11920 | if (!is_ppc64_elf (ibfd)) | |
11921 | continue; | |
11922 | ||
11923 | ent = ppc64_tlsld_got (ibfd); | |
11924 | if (!ent->is_indirect | |
11925 | && ent->got.offset != (bfd_vma) -1) | |
11926 | { | |
c72f2fb2 | 11927 | for (ibfd2 = ibfd->link.next; ibfd2 != NULL; ibfd2 = ibfd2->link.next) |
927be08e AM |
11928 | { |
11929 | if (!is_ppc64_elf (ibfd2)) | |
11930 | continue; | |
11931 | ||
11932 | ent2 = ppc64_tlsld_got (ibfd2); | |
11933 | if (!ent2->is_indirect | |
11934 | && ent2->got.offset != (bfd_vma) -1 | |
11935 | && elf_gp (ibfd2) == elf_gp (ibfd)) | |
11936 | { | |
11937 | ent2->is_indirect = TRUE; | |
11938 | ent2->got.ent = ent; | |
11939 | } | |
11940 | } | |
11941 | } | |
11942 | } | |
11943 | ||
11944 | /* Zap sizes of got sections. */ | |
33e44f2e AM |
11945 | htab->elf.irelplt->rawsize = htab->elf.irelplt->size; |
11946 | htab->elf.irelplt->size -= htab->got_reli_size; | |
927be08e AM |
11947 | htab->got_reli_size = 0; |
11948 | ||
c72f2fb2 | 11949 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next) |
927be08e AM |
11950 | { |
11951 | asection *got, *relgot; | |
11952 | ||
11953 | if (!is_ppc64_elf (ibfd)) | |
11954 | continue; | |
11955 | ||
11956 | got = ppc64_elf_tdata (ibfd)->got; | |
11957 | if (got != NULL) | |
11958 | { | |
11959 | got->rawsize = got->size; | |
11960 | got->size = 0; | |
11961 | relgot = ppc64_elf_tdata (ibfd)->relgot; | |
11962 | relgot->rawsize = relgot->size; | |
11963 | relgot->size = 0; | |
11964 | } | |
11965 | } | |
11966 | ||
11967 | /* Now reallocate the got, local syms first. We don't need to | |
11968 | allocate section contents again since we never increase size. */ | |
c72f2fb2 | 11969 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next) |
927be08e AM |
11970 | { |
11971 | struct got_entry **lgot_ents; | |
11972 | struct got_entry **end_lgot_ents; | |
11973 | struct plt_entry **local_plt; | |
11974 | struct plt_entry **end_local_plt; | |
f961d9dd | 11975 | unsigned char *lgot_masks; |
927be08e AM |
11976 | bfd_size_type locsymcount; |
11977 | Elf_Internal_Shdr *symtab_hdr; | |
19e08130 | 11978 | asection *s; |
927be08e AM |
11979 | |
11980 | if (!is_ppc64_elf (ibfd)) | |
11981 | continue; | |
11982 | ||
11983 | lgot_ents = elf_local_got_ents (ibfd); | |
11984 | if (!lgot_ents) | |
11985 | continue; | |
11986 | ||
11987 | symtab_hdr = &elf_symtab_hdr (ibfd); | |
11988 | locsymcount = symtab_hdr->sh_info; | |
11989 | end_lgot_ents = lgot_ents + locsymcount; | |
11990 | local_plt = (struct plt_entry **) end_lgot_ents; | |
11991 | end_local_plt = local_plt + locsymcount; | |
f961d9dd | 11992 | lgot_masks = (unsigned char *) end_local_plt; |
927be08e | 11993 | s = ppc64_elf_tdata (ibfd)->got; |
927be08e AM |
11994 | for (; lgot_ents < end_lgot_ents; ++lgot_ents, ++lgot_masks) |
11995 | { | |
11996 | struct got_entry *ent; | |
11997 | ||
11998 | for (ent = *lgot_ents; ent != NULL; ent = ent->next) | |
d0fae19d | 11999 | { |
19e08130 AM |
12000 | unsigned int ent_size = 8; |
12001 | unsigned int rel_size = sizeof (Elf64_External_Rela); | |
12002 | ||
d0fae19d AM |
12003 | ent->got.offset = s->size; |
12004 | if ((ent->tls_type & *lgot_masks & TLS_GD) != 0) | |
d0fae19d | 12005 | { |
19e08130 AM |
12006 | ent_size *= 2; |
12007 | rel_size *= 2; | |
12008 | } | |
12009 | s->size += ent_size; | |
37da22e5 | 12010 | if ((*lgot_masks & (TLS_TLS | PLT_IFUNC)) == PLT_IFUNC) |
19e08130 | 12011 | { |
33e44f2e | 12012 | htab->elf.irelplt->size += rel_size; |
19e08130 AM |
12013 | htab->got_reli_size += rel_size; |
12014 | } | |
6a3858a6 AM |
12015 | else if (bfd_link_pic (info) |
12016 | && !((ent->tls_type & TLS_TPREL) != 0 | |
12017 | && bfd_link_executable (info))) | |
19e08130 AM |
12018 | { |
12019 | asection *srel = ppc64_elf_tdata (ibfd)->relgot; | |
12020 | srel->size += rel_size; | |
d0fae19d AM |
12021 | } |
12022 | } | |
927be08e AM |
12023 | } |
12024 | } | |
12025 | ||
12026 | elf_link_hash_traverse (&htab->elf, reallocate_got, info); | |
12027 | ||
c72f2fb2 | 12028 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next) |
927be08e AM |
12029 | { |
12030 | struct got_entry *ent; | |
12031 | ||
12032 | if (!is_ppc64_elf (ibfd)) | |
12033 | continue; | |
12034 | ||
12035 | ent = ppc64_tlsld_got (ibfd); | |
12036 | if (!ent->is_indirect | |
12037 | && ent->got.offset != (bfd_vma) -1) | |
12038 | { | |
12039 | asection *s = ppc64_elf_tdata (ibfd)->got; | |
12040 | ent->got.offset = s->size; | |
12041 | s->size += 16; | |
0e1862bb | 12042 | if (bfd_link_pic (info)) |
927be08e AM |
12043 | { |
12044 | asection *srel = ppc64_elf_tdata (ibfd)->relgot; | |
12045 | srel->size += sizeof (Elf64_External_Rela); | |
12046 | } | |
12047 | } | |
12048 | } | |
12049 | ||
33e44f2e | 12050 | done_something = htab->elf.irelplt->rawsize != htab->elf.irelplt->size; |
927be08e | 12051 | if (!done_something) |
c72f2fb2 | 12052 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next) |
927be08e AM |
12053 | { |
12054 | asection *got; | |
12055 | ||
12056 | if (!is_ppc64_elf (ibfd)) | |
12057 | continue; | |
12058 | ||
12059 | got = ppc64_elf_tdata (ibfd)->got; | |
12060 | if (got != NULL) | |
12061 | { | |
12062 | done_something = got->rawsize != got->size; | |
12063 | if (done_something) | |
12064 | break; | |
12065 | } | |
12066 | } | |
12067 | ||
12068 | if (done_something) | |
e7d1c40c | 12069 | (*htab->params->layout_sections_again) (); |
927be08e AM |
12070 | |
12071 | /* Set up for second pass over toc sections to recalculate elf_gp | |
12072 | on input sections. */ | |
12073 | htab->toc_bfd = NULL; | |
12074 | htab->toc_first_sec = NULL; | |
12075 | htab->second_toc_pass = TRUE; | |
12076 | return done_something; | |
12077 | } | |
12078 | ||
12079 | /* Called after second pass of multitoc partitioning. */ | |
12080 | ||
12081 | void | |
12082 | ppc64_elf_finish_multitoc_partition (struct bfd_link_info *info) | |
12083 | { | |
12084 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
12085 | ||
12086 | /* After the second pass, toc_curr tracks the TOC offset used | |
12087 | for code sections below in ppc64_elf_next_input_section. */ | |
3d6f9012 | 12088 | htab->toc_curr = TOC_BASE_OFF; |
ad8e1ba5 AM |
12089 | } |
12090 | ||
9b5ecbd0 AM |
12091 | /* No toc references were found in ISEC. If the code in ISEC makes no |
12092 | calls, then there's no need to use toc adjusting stubs when branching | |
12093 | into ISEC. Actually, indirect calls from ISEC are OK as they will | |
4c52953f AM |
12094 | load r2. Returns -1 on error, 0 for no stub needed, 1 for stub |
12095 | needed, and 2 if a cyclical call-graph was found but no other reason | |
12096 | for a stub was detected. If called from the top level, a return of | |
12097 | 2 means the same as a return of 0. */ | |
9b5ecbd0 AM |
12098 | |
12099 | static int | |
4ce794b7 | 12100 | toc_adjusting_stub_needed (struct bfd_link_info *info, asection *isec) |
9b5ecbd0 | 12101 | { |
9b5ecbd0 | 12102 | int ret; |
70cc837d AM |
12103 | |
12104 | /* Mark this section as checked. */ | |
12105 | isec->call_check_done = 1; | |
9b5ecbd0 | 12106 | |
772119ce AM |
12107 | /* We know none of our code bearing sections will need toc stubs. */ |
12108 | if ((isec->flags & SEC_LINKER_CREATED) != 0) | |
12109 | return 0; | |
12110 | ||
eea6121a | 12111 | if (isec->size == 0) |
082c50f8 AM |
12112 | return 0; |
12113 | ||
4c52953f AM |
12114 | if (isec->output_section == NULL) |
12115 | return 0; | |
12116 | ||
4c52953f | 12117 | ret = 0; |
70cc837d | 12118 | if (isec->reloc_count != 0) |
9b5ecbd0 | 12119 | { |
70cc837d AM |
12120 | Elf_Internal_Rela *relstart, *rel; |
12121 | Elf_Internal_Sym *local_syms; | |
12122 | struct ppc_link_hash_table *htab; | |
2917689a | 12123 | |
70cc837d AM |
12124 | relstart = _bfd_elf_link_read_relocs (isec->owner, isec, NULL, NULL, |
12125 | info->keep_memory); | |
12126 | if (relstart == NULL) | |
12127 | return -1; | |
90aecf7a | 12128 | |
70cc837d AM |
12129 | /* Look for branches to outside of this section. */ |
12130 | local_syms = NULL; | |
12131 | htab = ppc_hash_table (info); | |
12132 | if (htab == NULL) | |
12133 | return -1; | |
4c52953f | 12134 | |
70cc837d | 12135 | for (rel = relstart; rel < relstart + isec->reloc_count; ++rel) |
4c52953f | 12136 | { |
70cc837d AM |
12137 | enum elf_ppc64_reloc_type r_type; |
12138 | unsigned long r_symndx; | |
12139 | struct elf_link_hash_entry *h; | |
12140 | struct ppc_link_hash_entry *eh; | |
12141 | Elf_Internal_Sym *sym; | |
12142 | asection *sym_sec; | |
12143 | struct _opd_sec_data *opd; | |
12144 | bfd_vma sym_value; | |
12145 | bfd_vma dest; | |
12146 | ||
12147 | r_type = ELF64_R_TYPE (rel->r_info); | |
12148 | if (r_type != R_PPC64_REL24 | |
12149 | && r_type != R_PPC64_REL14 | |
12150 | && r_type != R_PPC64_REL14_BRTAKEN | |
23cedd1d AM |
12151 | && r_type != R_PPC64_REL14_BRNTAKEN |
12152 | && r_type != R_PPC64_PLTCALL) | |
70cc837d | 12153 | continue; |
4c52953f | 12154 | |
70cc837d AM |
12155 | r_symndx = ELF64_R_SYM (rel->r_info); |
12156 | if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, r_symndx, | |
12157 | isec->owner)) | |
4c52953f | 12158 | { |
70cc837d AM |
12159 | ret = -1; |
12160 | break; | |
12161 | } | |
4c52953f | 12162 | |
70cc837d AM |
12163 | /* Calls to dynamic lib functions go through a plt call stub |
12164 | that uses r2. */ | |
12165 | eh = (struct ppc_link_hash_entry *) h; | |
12166 | if (eh != NULL | |
12167 | && (eh->elf.plt.plist != NULL | |
12168 | || (eh->oh != NULL | |
12169 | && ppc_follow_link (eh->oh)->elf.plt.plist != NULL))) | |
12170 | { | |
12171 | ret = 1; | |
12172 | break; | |
4c52953f AM |
12173 | } |
12174 | ||
70cc837d AM |
12175 | if (sym_sec == NULL) |
12176 | /* Ignore other undefined symbols. */ | |
4c52953f | 12177 | continue; |
4c52953f | 12178 | |
70cc837d AM |
12179 | /* Assume branches to other sections not included in the |
12180 | link need stubs too, to cover -R and absolute syms. */ | |
12181 | if (sym_sec->output_section == NULL) | |
12182 | { | |
12183 | ret = 1; | |
12184 | break; | |
12185 | } | |
4c52953f | 12186 | |
70cc837d AM |
12187 | if (h == NULL) |
12188 | sym_value = sym->st_value; | |
12189 | else | |
12190 | { | |
12191 | if (h->root.type != bfd_link_hash_defined | |
12192 | && h->root.type != bfd_link_hash_defweak) | |
12193 | abort (); | |
12194 | sym_value = h->root.u.def.value; | |
12195 | } | |
12196 | sym_value += rel->r_addend; | |
4c52953f | 12197 | |
70cc837d AM |
12198 | /* If this branch reloc uses an opd sym, find the code section. */ |
12199 | opd = get_opd_info (sym_sec); | |
12200 | if (opd != NULL) | |
12201 | { | |
12202 | if (h == NULL && opd->adjust != NULL) | |
12203 | { | |
12204 | long adjust; | |
4c52953f | 12205 | |
92a9c616 | 12206 | adjust = opd->adjust[OPD_NDX (sym_value)]; |
70cc837d AM |
12207 | if (adjust == -1) |
12208 | /* Assume deleted functions won't ever be called. */ | |
12209 | continue; | |
12210 | sym_value += adjust; | |
12211 | } | |
4c52953f | 12212 | |
aef36ac1 AM |
12213 | dest = opd_entry_value (sym_sec, sym_value, |
12214 | &sym_sec, NULL, FALSE); | |
70cc837d AM |
12215 | if (dest == (bfd_vma) -1) |
12216 | continue; | |
12217 | } | |
12218 | else | |
12219 | dest = (sym_value | |
12220 | + sym_sec->output_offset | |
12221 | + sym_sec->output_section->vma); | |
4c52953f | 12222 | |
70cc837d AM |
12223 | /* Ignore branch to self. */ |
12224 | if (sym_sec == isec) | |
12225 | continue; | |
4c52953f | 12226 | |
70cc837d AM |
12227 | /* If the called function uses the toc, we need a stub. */ |
12228 | if (sym_sec->has_toc_reloc | |
12229 | || sym_sec->makes_toc_func_call) | |
4c52953f | 12230 | { |
70cc837d | 12231 | ret = 1; |
4c52953f AM |
12232 | break; |
12233 | } | |
70cc837d AM |
12234 | |
12235 | /* Assume any branch that needs a long branch stub might in fact | |
12236 | need a plt_branch stub. A plt_branch stub uses r2. */ | |
12237 | else if (dest - (isec->output_offset | |
12238 | + isec->output_section->vma | |
6911b7dc AM |
12239 | + rel->r_offset) + (1 << 25) |
12240 | >= (2u << 25) - PPC64_LOCAL_ENTRY_OFFSET (h | |
12241 | ? h->other | |
12242 | : sym->st_other)) | |
4c52953f | 12243 | { |
70cc837d AM |
12244 | ret = 1; |
12245 | break; | |
12246 | } | |
12247 | ||
12248 | /* If calling back to a section in the process of being | |
12249 | tested, we can't say for sure that no toc adjusting stubs | |
12250 | are needed, so don't return zero. */ | |
12251 | else if (sym_sec->call_check_in_progress) | |
12252 | ret = 2; | |
12253 | ||
12254 | /* Branches to another section that itself doesn't have any TOC | |
12255 | references are OK. Recursively call ourselves to check. */ | |
12256 | else if (!sym_sec->call_check_done) | |
12257 | { | |
12258 | int recur; | |
12259 | ||
12260 | /* Mark current section as indeterminate, so that other | |
12261 | sections that call back to current won't be marked as | |
12262 | known. */ | |
12263 | isec->call_check_in_progress = 1; | |
12264 | recur = toc_adjusting_stub_needed (info, sym_sec); | |
12265 | isec->call_check_in_progress = 0; | |
12266 | ||
4c52953f AM |
12267 | if (recur != 0) |
12268 | { | |
70cc837d AM |
12269 | ret = recur; |
12270 | if (recur != 2) | |
12271 | break; | |
4c52953f AM |
12272 | } |
12273 | } | |
4c52953f | 12274 | } |
70cc837d AM |
12275 | |
12276 | if (local_syms != NULL | |
12277 | && (elf_symtab_hdr (isec->owner).contents | |
12278 | != (unsigned char *) local_syms)) | |
12279 | free (local_syms); | |
12280 | if (elf_section_data (isec)->relocs != relstart) | |
12281 | free (relstart); | |
9b5ecbd0 AM |
12282 | } |
12283 | ||
70cc837d AM |
12284 | if ((ret & 1) == 0 |
12285 | && isec->map_head.s != NULL | |
12286 | && (strcmp (isec->output_section->name, ".init") == 0 | |
12287 | || strcmp (isec->output_section->name, ".fini") == 0)) | |
12288 | { | |
12289 | if (isec->map_head.s->has_toc_reloc | |
12290 | || isec->map_head.s->makes_toc_func_call) | |
12291 | ret = 1; | |
12292 | else if (!isec->map_head.s->call_check_done) | |
12293 | { | |
12294 | int recur; | |
12295 | isec->call_check_in_progress = 1; | |
12296 | recur = toc_adjusting_stub_needed (info, isec->map_head.s); | |
12297 | isec->call_check_in_progress = 0; | |
12298 | if (recur != 0) | |
12299 | ret = recur; | |
12300 | } | |
12301 | } | |
12302 | ||
12303 | if (ret == 1) | |
12304 | isec->makes_toc_func_call = 1; | |
4c52953f | 12305 | |
9b5ecbd0 AM |
12306 | return ret; |
12307 | } | |
12308 | ||
721956f4 AM |
12309 | /* The linker repeatedly calls this function for each input section, |
12310 | in the order that input sections are linked into output sections. | |
12311 | Build lists of input sections to determine groupings between which | |
12312 | we may insert linker stubs. */ | |
12313 | ||
9b5ecbd0 | 12314 | bfd_boolean |
4ce794b7 | 12315 | ppc64_elf_next_input_section (struct bfd_link_info *info, asection *isec) |
721956f4 AM |
12316 | { |
12317 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
12318 | ||
4dfe6ac6 NC |
12319 | if (htab == NULL) |
12320 | return FALSE; | |
12321 | ||
734b6cf9 | 12322 | if ((isec->output_section->flags & SEC_CODE) != 0 |
6f20ed8a | 12323 | && isec->output_section->id < htab->sec_info_arr_size) |
721956f4 | 12324 | { |
3d6f9012 AM |
12325 | /* This happens to make the list in reverse order, |
12326 | which is what we want. */ | |
6f20ed8a AM |
12327 | htab->sec_info[isec->id].u.list |
12328 | = htab->sec_info[isec->output_section->id].u.list; | |
12329 | htab->sec_info[isec->output_section->id].u.list = isec; | |
721956f4 | 12330 | } |
ad8e1ba5 | 12331 | |
4c52953f | 12332 | if (htab->multi_toc_needed) |
9b5ecbd0 | 12333 | { |
8b974ba3 AM |
12334 | /* Analyse sections that aren't already flagged as needing a |
12335 | valid toc pointer. Exclude .fixup for the linux kernel. | |
12336 | .fixup contains branches, but only back to the function that | |
12337 | hit an exception. */ | |
12338 | if (!(isec->has_toc_reloc | |
12339 | || (isec->flags & SEC_CODE) == 0 | |
12340 | || strcmp (isec->name, ".fixup") == 0 | |
12341 | || isec->call_check_done)) | |
12342 | { | |
12343 | if (toc_adjusting_stub_needed (info, isec) < 0) | |
6683a28d | 12344 | return FALSE; |
8b974ba3 AM |
12345 | } |
12346 | /* Make all sections use the TOC assigned for this object file. | |
12347 | This will be wrong for pasted sections; We fix that in | |
12348 | check_pasted_section(). */ | |
12349 | if (elf_gp (isec->owner) != 0) | |
12350 | htab->toc_curr = elf_gp (isec->owner); | |
12351 | } | |
12352 | ||
6f20ed8a | 12353 | htab->sec_info[isec->id].toc_off = htab->toc_curr; |
9b5ecbd0 | 12354 | return TRUE; |
721956f4 AM |
12355 | } |
12356 | ||
70cc837d AM |
12357 | /* Check that all .init and .fini sections use the same toc, if they |
12358 | have toc relocs. */ | |
12359 | ||
12360 | static bfd_boolean | |
12361 | check_pasted_section (struct bfd_link_info *info, const char *name) | |
12362 | { | |
12363 | asection *o = bfd_get_section_by_name (info->output_bfd, name); | |
12364 | ||
12365 | if (o != NULL) | |
12366 | { | |
12367 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
12368 | bfd_vma toc_off = 0; | |
12369 | asection *i; | |
12370 | ||
12371 | for (i = o->map_head.s; i != NULL; i = i->map_head.s) | |
12372 | if (i->has_toc_reloc) | |
12373 | { | |
12374 | if (toc_off == 0) | |
6f20ed8a AM |
12375 | toc_off = htab->sec_info[i->id].toc_off; |
12376 | else if (toc_off != htab->sec_info[i->id].toc_off) | |
70cc837d AM |
12377 | return FALSE; |
12378 | } | |
6683a28d AM |
12379 | |
12380 | if (toc_off == 0) | |
12381 | for (i = o->map_head.s; i != NULL; i = i->map_head.s) | |
12382 | if (i->makes_toc_func_call) | |
12383 | { | |
6f20ed8a | 12384 | toc_off = htab->sec_info[i->id].toc_off; |
6683a28d AM |
12385 | break; |
12386 | } | |
12387 | ||
70cc837d AM |
12388 | /* Make sure the whole pasted function uses the same toc offset. */ |
12389 | if (toc_off != 0) | |
12390 | for (i = o->map_head.s; i != NULL; i = i->map_head.s) | |
6f20ed8a | 12391 | htab->sec_info[i->id].toc_off = toc_off; |
70cc837d AM |
12392 | } |
12393 | return TRUE; | |
12394 | } | |
12395 | ||
12396 | bfd_boolean | |
12397 | ppc64_elf_check_init_fini (struct bfd_link_info *info) | |
12398 | { | |
12399 | return (check_pasted_section (info, ".init") | |
12400 | & check_pasted_section (info, ".fini")); | |
12401 | } | |
12402 | ||
721956f4 AM |
12403 | /* See whether we can group stub sections together. Grouping stub |
12404 | sections may result in fewer stubs. More importantly, we need to | |
12405 | put all .init* and .fini* stubs at the beginning of the .init or | |
12406 | .fini output sections respectively, because glibc splits the | |
12407 | _init and _fini functions into multiple parts. Putting a stub in | |
12408 | the middle of a function is not a good idea. */ | |
12409 | ||
6f20ed8a AM |
12410 | static bfd_boolean |
12411 | group_sections (struct bfd_link_info *info, | |
4ce794b7 AM |
12412 | bfd_size_type stub_group_size, |
12413 | bfd_boolean stubs_always_before_branch) | |
721956f4 | 12414 | { |
6f20ed8a AM |
12415 | struct ppc_link_hash_table *htab; |
12416 | asection *osec; | |
7c8fe5c4 AM |
12417 | bfd_boolean suppress_size_errors; |
12418 | ||
6f20ed8a AM |
12419 | htab = ppc_hash_table (info); |
12420 | if (htab == NULL) | |
12421 | return FALSE; | |
12422 | ||
7c8fe5c4 | 12423 | suppress_size_errors = FALSE; |
7c8fe5c4 AM |
12424 | if (stub_group_size == 1) |
12425 | { | |
12426 | /* Default values. */ | |
12427 | if (stubs_always_before_branch) | |
09f92717 | 12428 | stub_group_size = 0x1e00000; |
7c8fe5c4 | 12429 | else |
09f92717 | 12430 | stub_group_size = 0x1c00000; |
7c8fe5c4 AM |
12431 | suppress_size_errors = TRUE; |
12432 | } | |
12433 | ||
6f20ed8a | 12434 | for (osec = info->output_bfd->sections; osec != NULL; osec = osec->next) |
721956f4 | 12435 | { |
6f20ed8a AM |
12436 | asection *tail; |
12437 | ||
12438 | if (osec->id >= htab->sec_info_arr_size) | |
12439 | continue; | |
12440 | ||
12441 | tail = htab->sec_info[osec->id].u.list; | |
734b6cf9 | 12442 | while (tail != NULL) |
721956f4 | 12443 | { |
734b6cf9 AM |
12444 | asection *curr; |
12445 | asection *prev; | |
12446 | bfd_size_type total; | |
12447 | bfd_boolean big_sec; | |
12448 | bfd_vma curr_toc; | |
6f20ed8a | 12449 | struct map_stub *group; |
09f92717 | 12450 | bfd_size_type group_size; |
734b6cf9 AM |
12451 | |
12452 | curr = tail; | |
eea6121a | 12453 | total = tail->size; |
09f92717 AM |
12454 | group_size = (ppc64_elf_section_data (tail) != NULL |
12455 | && ppc64_elf_section_data (tail)->has_14bit_branch | |
12456 | ? stub_group_size >> 10 : stub_group_size); | |
12457 | ||
12458 | big_sec = total > group_size; | |
7c8fe5c4 | 12459 | if (big_sec && !suppress_size_errors) |
695344c0 | 12460 | /* xgettext:c-format */ |
871b3ab2 | 12461 | _bfd_error_handler (_("%pB section %pA exceeds stub group size"), |
4eca0228 | 12462 | tail->owner, tail); |
6f20ed8a | 12463 | curr_toc = htab->sec_info[tail->id].toc_off; |
734b6cf9 | 12464 | |
6f20ed8a | 12465 | while ((prev = htab->sec_info[curr->id].u.list) != NULL |
734b6cf9 | 12466 | && ((total += curr->output_offset - prev->output_offset) |
6bee8834 AM |
12467 | < (ppc64_elf_section_data (prev) != NULL |
12468 | && ppc64_elf_section_data (prev)->has_14bit_branch | |
09f92717 | 12469 | ? (group_size = stub_group_size >> 10) : group_size)) |
6f20ed8a | 12470 | && htab->sec_info[prev->id].toc_off == curr_toc) |
734b6cf9 AM |
12471 | curr = prev; |
12472 | ||
12473 | /* OK, the size from the start of CURR to the end is less | |
09f92717 | 12474 | than group_size and thus can be handled by one stub |
734b6cf9 | 12475 | section. (or the tail section is itself larger than |
09f92717 AM |
12476 | group_size, in which case we may be toast.) We should |
12477 | really be keeping track of the total size of stubs added | |
12478 | here, as stubs contribute to the final output section | |
12479 | size. That's a little tricky, and this way will only | |
12480 | break if stubs added make the total size more than 2^25, | |
12481 | ie. for the default stub_group_size, if stubs total more | |
12482 | than 2097152 bytes, or nearly 75000 plt call stubs. */ | |
6f20ed8a AM |
12483 | group = bfd_alloc (curr->owner, sizeof (*group)); |
12484 | if (group == NULL) | |
12485 | return FALSE; | |
12486 | group->link_sec = curr; | |
12487 | group->stub_sec = NULL; | |
a4b6fadd | 12488 | group->needs_save_res = 0; |
d4aaa2a0 | 12489 | group->tls_get_addr_opt_bctrl = -1u; |
a4b6fadd AM |
12490 | group->next = htab->group; |
12491 | htab->group = group; | |
734b6cf9 | 12492 | do |
721956f4 | 12493 | { |
6f20ed8a | 12494 | prev = htab->sec_info[tail->id].u.list; |
734b6cf9 | 12495 | /* Set up this stub group. */ |
6f20ed8a | 12496 | htab->sec_info[tail->id].u.group = group; |
721956f4 | 12497 | } |
734b6cf9 AM |
12498 | while (tail != curr && (tail = prev) != NULL); |
12499 | ||
09f92717 | 12500 | /* But wait, there's more! Input sections up to group_size |
734b6cf9 AM |
12501 | bytes before the stub section can be handled by it too. |
12502 | Don't do this if we have a really large section after the | |
12503 | stubs, as adding more stubs increases the chance that | |
12504 | branches may not reach into the stub section. */ | |
12505 | if (!stubs_always_before_branch && !big_sec) | |
12506 | { | |
12507 | total = 0; | |
12508 | while (prev != NULL | |
12509 | && ((total += tail->output_offset - prev->output_offset) | |
6bee8834 AM |
12510 | < (ppc64_elf_section_data (prev) != NULL |
12511 | && ppc64_elf_section_data (prev)->has_14bit_branch | |
09f92717 | 12512 | ? (group_size = stub_group_size >> 10) : group_size)) |
6f20ed8a | 12513 | && htab->sec_info[prev->id].toc_off == curr_toc) |
734b6cf9 AM |
12514 | { |
12515 | tail = prev; | |
6f20ed8a AM |
12516 | prev = htab->sec_info[tail->id].u.list; |
12517 | htab->sec_info[tail->id].u.group = group; | |
734b6cf9 AM |
12518 | } |
12519 | } | |
12520 | tail = prev; | |
721956f4 AM |
12521 | } |
12522 | } | |
6f20ed8a | 12523 | return TRUE; |
721956f4 AM |
12524 | } |
12525 | ||
58d180e8 AM |
12526 | static const unsigned char glink_eh_frame_cie[] = |
12527 | { | |
12528 | 0, 0, 0, 16, /* length. */ | |
12529 | 0, 0, 0, 0, /* id. */ | |
12530 | 1, /* CIE version. */ | |
12531 | 'z', 'R', 0, /* Augmentation string. */ | |
12532 | 4, /* Code alignment. */ | |
12533 | 0x78, /* Data alignment. */ | |
12534 | 65, /* RA reg. */ | |
12535 | 1, /* Augmentation size. */ | |
12536 | DW_EH_PE_pcrel | DW_EH_PE_sdata4, /* FDE encoding. */ | |
2e0ce1c8 | 12537 | DW_CFA_def_cfa, 1, 0 /* def_cfa: r1 offset 0. */ |
58d180e8 AM |
12538 | }; |
12539 | ||
d4aaa2a0 AM |
12540 | static size_t |
12541 | stub_eh_frame_size (struct map_stub *group, size_t align) | |
12542 | { | |
12543 | size_t this_size = 17; | |
12544 | if (group->tls_get_addr_opt_bctrl != -1u) | |
12545 | { | |
12546 | unsigned int to_bctrl = group->tls_get_addr_opt_bctrl / 4; | |
12547 | if (to_bctrl < 64) | |
12548 | this_size += 1; | |
12549 | else if (to_bctrl < 256) | |
12550 | this_size += 2; | |
12551 | else if (to_bctrl < 65536) | |
12552 | this_size += 3; | |
12553 | else | |
12554 | this_size += 5; | |
12555 | this_size += 6; | |
12556 | } | |
12557 | this_size = (this_size + align - 1) & -align; | |
12558 | return this_size; | |
12559 | } | |
12560 | ||
d969d15f AM |
12561 | /* Stripping output sections is normally done before dynamic section |
12562 | symbols have been allocated. This function is called later, and | |
12563 | handles cases like htab->brlt which is mapped to its own output | |
12564 | section. */ | |
12565 | ||
12566 | static void | |
12567 | maybe_strip_output (struct bfd_link_info *info, asection *isec) | |
12568 | { | |
12569 | if (isec->size == 0 | |
12570 | && isec->output_section->size == 0 | |
53d8967a | 12571 | && !(isec->output_section->flags & SEC_KEEP) |
d969d15f AM |
12572 | && !bfd_section_removed_from_list (info->output_bfd, |
12573 | isec->output_section) | |
12574 | && elf_section_data (isec->output_section)->dynindx == 0) | |
12575 | { | |
12576 | isec->output_section->flags |= SEC_EXCLUDE; | |
12577 | bfd_section_list_remove (info->output_bfd, isec->output_section); | |
12578 | info->output_bfd->section_count--; | |
12579 | } | |
12580 | } | |
12581 | ||
721956f4 AM |
12582 | /* Determine and set the size of the stub section for a final link. |
12583 | ||
12584 | The basic idea here is to examine all the relocations looking for | |
12585 | PC-relative calls to a target that is unreachable with a "bl" | |
12586 | instruction. */ | |
12587 | ||
b34976b6 | 12588 | bfd_boolean |
e7d1c40c | 12589 | ppc64_elf_size_stubs (struct bfd_link_info *info) |
721956f4 AM |
12590 | { |
12591 | bfd_size_type stub_group_size; | |
b34976b6 | 12592 | bfd_boolean stubs_always_before_branch; |
721956f4 AM |
12593 | struct ppc_link_hash_table *htab = ppc_hash_table (info); |
12594 | ||
4dfe6ac6 NC |
12595 | if (htab == NULL) |
12596 | return FALSE; | |
12597 | ||
0e1862bb | 12598 | if (htab->params->plt_thread_safe == -1 && !bfd_link_executable (info)) |
e7d1c40c | 12599 | htab->params->plt_thread_safe = 1; |
b9e5796b | 12600 | if (!htab->opd_abi) |
e7d1c40c AM |
12601 | htab->params->plt_thread_safe = 0; |
12602 | else if (htab->params->plt_thread_safe == -1) | |
794e51c0 | 12603 | { |
e2458743 | 12604 | static const char *const thread_starter[] = |
794e51c0 AM |
12605 | { |
12606 | "pthread_create", | |
12607 | /* libstdc++ */ | |
12608 | "_ZNSt6thread15_M_start_threadESt10shared_ptrINS_10_Impl_baseEE", | |
12609 | /* librt */ | |
12610 | "aio_init", "aio_read", "aio_write", "aio_fsync", "lio_listio", | |
12611 | "mq_notify", "create_timer", | |
12612 | /* libanl */ | |
12613 | "getaddrinfo_a", | |
12614 | /* libgomp */ | |
2300b5a1 | 12615 | "GOMP_parallel", |
794e51c0 | 12616 | "GOMP_parallel_start", |
2300b5a1 | 12617 | "GOMP_parallel_loop_static", |
794e51c0 | 12618 | "GOMP_parallel_loop_static_start", |
2300b5a1 | 12619 | "GOMP_parallel_loop_dynamic", |
794e51c0 | 12620 | "GOMP_parallel_loop_dynamic_start", |
2300b5a1 | 12621 | "GOMP_parallel_loop_guided", |
794e51c0 | 12622 | "GOMP_parallel_loop_guided_start", |
2300b5a1 | 12623 | "GOMP_parallel_loop_runtime", |
794e51c0 | 12624 | "GOMP_parallel_loop_runtime_start", |
2300b5a1 | 12625 | "GOMP_parallel_sections", |
68ffbac6 | 12626 | "GOMP_parallel_sections_start", |
f9dffbf0 AM |
12627 | /* libgo */ |
12628 | "__go_go", | |
794e51c0 AM |
12629 | }; |
12630 | unsigned i; | |
12631 | ||
a4b6fadd | 12632 | for (i = 0; i < ARRAY_SIZE (thread_starter); i++) |
794e51c0 AM |
12633 | { |
12634 | struct elf_link_hash_entry *h; | |
12635 | h = elf_link_hash_lookup (&htab->elf, thread_starter[i], | |
12636 | FALSE, FALSE, TRUE); | |
e7d1c40c AM |
12637 | htab->params->plt_thread_safe = h != NULL && h->ref_regular; |
12638 | if (htab->params->plt_thread_safe) | |
794e51c0 AM |
12639 | break; |
12640 | } | |
12641 | } | |
e7d1c40c AM |
12642 | stubs_always_before_branch = htab->params->group_size < 0; |
12643 | if (htab->params->group_size < 0) | |
12644 | stub_group_size = -htab->params->group_size; | |
721956f4 | 12645 | else |
e7d1c40c | 12646 | stub_group_size = htab->params->group_size; |
721956f4 | 12647 | |
6f20ed8a AM |
12648 | if (!group_sections (info, stub_group_size, stubs_always_before_branch)) |
12649 | return FALSE; | |
721956f4 | 12650 | |
c9301e31 AM |
12651 | #define STUB_SHRINK_ITER 20 |
12652 | /* Loop until no stubs added. After iteration 20 of this loop we may | |
12653 | exit on a stub section shrinking. This is to break out of a | |
12654 | pathological case where adding stubs on one iteration decreases | |
12655 | section gaps (perhaps due to alignment), which then requires | |
12656 | fewer or smaller stubs on the next iteration. */ | |
12657 | ||
721956f4 AM |
12658 | while (1) |
12659 | { | |
12660 | bfd *input_bfd; | |
12661 | unsigned int bfd_indx; | |
a4b6fadd | 12662 | struct map_stub *group; |
721956f4 AM |
12663 | |
12664 | htab->stub_iteration += 1; | |
721956f4 AM |
12665 | |
12666 | for (input_bfd = info->input_bfds, bfd_indx = 0; | |
12667 | input_bfd != NULL; | |
c72f2fb2 | 12668 | input_bfd = input_bfd->link.next, bfd_indx++) |
721956f4 AM |
12669 | { |
12670 | Elf_Internal_Shdr *symtab_hdr; | |
12671 | asection *section; | |
6cdc0ccc | 12672 | Elf_Internal_Sym *local_syms = NULL; |
721956f4 | 12673 | |
0c8d6e5c | 12674 | if (!is_ppc64_elf (input_bfd)) |
67f93c31 AM |
12675 | continue; |
12676 | ||
721956f4 | 12677 | /* We'll need the symbol table in a second. */ |
0ffa91dd | 12678 | symtab_hdr = &elf_symtab_hdr (input_bfd); |
721956f4 AM |
12679 | if (symtab_hdr->sh_info == 0) |
12680 | continue; | |
12681 | ||
721956f4 AM |
12682 | /* Walk over each section attached to the input bfd. */ |
12683 | for (section = input_bfd->sections; | |
12684 | section != NULL; | |
12685 | section = section->next) | |
12686 | { | |
721956f4 | 12687 | Elf_Internal_Rela *internal_relocs, *irelaend, *irela; |
721956f4 AM |
12688 | |
12689 | /* If there aren't any relocs, then there's nothing more | |
12690 | to do. */ | |
12691 | if ((section->flags & SEC_RELOC) == 0 | |
12c0f757 AM |
12692 | || (section->flags & SEC_ALLOC) == 0 |
12693 | || (section->flags & SEC_LOAD) == 0 | |
12694 | || (section->flags & SEC_CODE) == 0 | |
721956f4 AM |
12695 | || section->reloc_count == 0) |
12696 | continue; | |
12697 | ||
12698 | /* If this section is a link-once section that will be | |
12699 | discarded, then don't create any stubs. */ | |
12700 | if (section->output_section == NULL | |
927be08e | 12701 | || section->output_section->owner != info->output_bfd) |
721956f4 AM |
12702 | continue; |
12703 | ||
1e2f5b6e AM |
12704 | /* Get the relocs. */ |
12705 | internal_relocs | |
4ce794b7 | 12706 | = _bfd_elf_link_read_relocs (input_bfd, section, NULL, NULL, |
45d6a902 | 12707 | info->keep_memory); |
721956f4 | 12708 | if (internal_relocs == NULL) |
1e2f5b6e | 12709 | goto error_ret_free_local; |
721956f4 AM |
12710 | |
12711 | /* Now examine each relocation. */ | |
12712 | irela = internal_relocs; | |
12713 | irelaend = irela + section->reloc_count; | |
12714 | for (; irela < irelaend; irela++) | |
12715 | { | |
4ce794b7 AM |
12716 | enum elf_ppc64_reloc_type r_type; |
12717 | unsigned int r_indx; | |
721956f4 AM |
12718 | enum ppc_stub_type stub_type; |
12719 | struct ppc_stub_hash_entry *stub_entry; | |
8387904d | 12720 | asection *sym_sec, *code_sec; |
e054468f | 12721 | bfd_vma sym_value, code_value; |
721956f4 | 12722 | bfd_vma destination; |
6911b7dc | 12723 | unsigned long local_off; |
8843416a | 12724 | bfd_boolean ok_dest; |
721956f4 | 12725 | struct ppc_link_hash_entry *hash; |
8387904d | 12726 | struct ppc_link_hash_entry *fdh; |
411e1bfb AM |
12727 | struct elf_link_hash_entry *h; |
12728 | Elf_Internal_Sym *sym; | |
721956f4 AM |
12729 | char *stub_name; |
12730 | const asection *id_sec; | |
74f0fb50 | 12731 | struct _opd_sec_data *opd; |
e054468f | 12732 | struct plt_entry *plt_ent; |
721956f4 AM |
12733 | |
12734 | r_type = ELF64_R_TYPE (irela->r_info); | |
12735 | r_indx = ELF64_R_SYM (irela->r_info); | |
12736 | ||
4ce794b7 | 12737 | if (r_type >= R_PPC64_max) |
721956f4 AM |
12738 | { |
12739 | bfd_set_error (bfd_error_bad_value); | |
6cdc0ccc | 12740 | goto error_ret_free_internal; |
721956f4 AM |
12741 | } |
12742 | ||
12743 | /* Only look for stubs on branch instructions. */ | |
4ce794b7 AM |
12744 | if (r_type != R_PPC64_REL24 |
12745 | && r_type != R_PPC64_REL14 | |
12746 | && r_type != R_PPC64_REL14_BRTAKEN | |
12747 | && r_type != R_PPC64_REL14_BRNTAKEN) | |
721956f4 AM |
12748 | continue; |
12749 | ||
12750 | /* Now determine the call target, its name, value, | |
12751 | section. */ | |
411e1bfb AM |
12752 | if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, |
12753 | r_indx, input_bfd)) | |
12754 | goto error_ret_free_internal; | |
12755 | hash = (struct ppc_link_hash_entry *) h; | |
12756 | ||
8843416a | 12757 | ok_dest = FALSE; |
8387904d | 12758 | fdh = NULL; |
7fe2b9a6 | 12759 | sym_value = 0; |
411e1bfb | 12760 | if (hash == NULL) |
721956f4 | 12761 | { |
411e1bfb | 12762 | sym_value = sym->st_value; |
c27b8c2a AM |
12763 | if (sym_sec != NULL |
12764 | && sym_sec->output_section != NULL) | |
12765 | ok_dest = TRUE; | |
721956f4 | 12766 | } |
7fe2b9a6 AM |
12767 | else if (hash->elf.root.type == bfd_link_hash_defined |
12768 | || hash->elf.root.type == bfd_link_hash_defweak) | |
12769 | { | |
12770 | sym_value = hash->elf.root.u.def.value; | |
12771 | if (sym_sec->output_section != NULL) | |
12772 | ok_dest = TRUE; | |
12773 | } | |
12774 | else if (hash->elf.root.type == bfd_link_hash_undefweak | |
12775 | || hash->elf.root.type == bfd_link_hash_undefined) | |
721956f4 | 12776 | { |
99877b66 | 12777 | /* Recognise an old ABI func code entry sym, and |
7fe2b9a6 AM |
12778 | use the func descriptor sym instead if it is |
12779 | defined. */ | |
ceb1f1ef | 12780 | if (hash->elf.root.root.string[0] == '.' |
8c5b4e52 | 12781 | && hash->oh != NULL) |
8387904d | 12782 | { |
8c5b4e52 | 12783 | fdh = ppc_follow_link (hash->oh); |
8387904d AM |
12784 | if (fdh->elf.root.type == bfd_link_hash_defined |
12785 | || fdh->elf.root.type == bfd_link_hash_defweak) | |
12786 | { | |
12787 | sym_sec = fdh->elf.root.u.def.section; | |
12788 | sym_value = fdh->elf.root.u.def.value; | |
12789 | if (sym_sec->output_section != NULL) | |
12790 | ok_dest = TRUE; | |
12791 | } | |
99877b66 AM |
12792 | else |
12793 | fdh = NULL; | |
8387904d | 12794 | } |
7fe2b9a6 AM |
12795 | } |
12796 | else | |
12797 | { | |
12798 | bfd_set_error (bfd_error_bad_value); | |
12799 | goto error_ret_free_internal; | |
721956f4 AM |
12800 | } |
12801 | ||
8843416a | 12802 | destination = 0; |
6911b7dc | 12803 | local_off = 0; |
8843416a AM |
12804 | if (ok_dest) |
12805 | { | |
12806 | sym_value += irela->r_addend; | |
12807 | destination = (sym_value | |
12808 | + sym_sec->output_offset | |
12809 | + sym_sec->output_section->vma); | |
6911b7dc AM |
12810 | local_off = PPC64_LOCAL_ENTRY_OFFSET (hash |
12811 | ? hash->elf.other | |
12812 | : sym->st_other); | |
8843416a AM |
12813 | } |
12814 | ||
8387904d | 12815 | code_sec = sym_sec; |
e054468f | 12816 | code_value = sym_value; |
74f0fb50 AM |
12817 | opd = get_opd_info (sym_sec); |
12818 | if (opd != NULL) | |
8387904d AM |
12819 | { |
12820 | bfd_vma dest; | |
12821 | ||
74f0fb50 | 12822 | if (hash == NULL && opd->adjust != NULL) |
8387904d | 12823 | { |
51aecdc5 | 12824 | long adjust = opd->adjust[OPD_NDX (sym_value)]; |
8387904d AM |
12825 | if (adjust == -1) |
12826 | continue; | |
e054468f | 12827 | code_value += adjust; |
8387904d AM |
12828 | sym_value += adjust; |
12829 | } | |
12830 | dest = opd_entry_value (sym_sec, sym_value, | |
aef36ac1 | 12831 | &code_sec, &code_value, FALSE); |
8387904d AM |
12832 | if (dest != (bfd_vma) -1) |
12833 | { | |
12834 | destination = dest; | |
12835 | if (fdh != NULL) | |
12836 | { | |
12837 | /* Fixup old ABI sym to point at code | |
12838 | entry. */ | |
99877b66 | 12839 | hash->elf.root.type = bfd_link_hash_defweak; |
8387904d | 12840 | hash->elf.root.u.def.section = code_sec; |
e054468f | 12841 | hash->elf.root.u.def.value = code_value; |
8387904d AM |
12842 | } |
12843 | } | |
12844 | } | |
12845 | ||
721956f4 | 12846 | /* Determine what (if any) linker stub is needed. */ |
e054468f | 12847 | plt_ent = NULL; |
721956f4 | 12848 | stub_type = ppc_type_of_stub (section, irela, &hash, |
6911b7dc AM |
12849 | &plt_ent, destination, |
12850 | local_off); | |
ad8e1ba5 AM |
12851 | |
12852 | if (stub_type != ppc_stub_plt_call) | |
12853 | { | |
12854 | /* Check whether we need a TOC adjusting stub. | |
12855 | Since the linker pastes together pieces from | |
12856 | different object files when creating the | |
12857 | _init and _fini functions, it may be that a | |
12858 | call to what looks like a local sym is in | |
12859 | fact a call needing a TOC adjustment. */ | |
8387904d AM |
12860 | if (code_sec != NULL |
12861 | && code_sec->output_section != NULL | |
6f20ed8a AM |
12862 | && (htab->sec_info[code_sec->id].toc_off |
12863 | != htab->sec_info[section->id].toc_off) | |
4c52953f AM |
12864 | && (code_sec->has_toc_reloc |
12865 | || code_sec->makes_toc_func_call)) | |
ad8e1ba5 AM |
12866 | stub_type = ppc_stub_long_branch_r2off; |
12867 | } | |
12868 | ||
721956f4 AM |
12869 | if (stub_type == ppc_stub_none) |
12870 | continue; | |
12871 | ||
411e1bfb AM |
12872 | /* __tls_get_addr calls might be eliminated. */ |
12873 | if (stub_type != ppc_stub_plt_call | |
12874 | && hash != NULL | |
8387904d AM |
12875 | && (hash == htab->tls_get_addr |
12876 | || hash == htab->tls_get_addr_fd) | |
411e1bfb AM |
12877 | && section->has_tls_reloc |
12878 | && irela != internal_relocs) | |
12879 | { | |
12880 | /* Get tls info. */ | |
f961d9dd | 12881 | unsigned char *tls_mask; |
411e1bfb | 12882 | |
3a71aa26 | 12883 | if (!get_tls_mask (&tls_mask, NULL, NULL, &local_syms, |
411e1bfb AM |
12884 | irela - 1, input_bfd)) |
12885 | goto error_ret_free_internal; | |
37da22e5 | 12886 | if ((*tls_mask & TLS_TLS) != 0) |
411e1bfb AM |
12887 | continue; |
12888 | } | |
12889 | ||
f378ab09 | 12890 | if (stub_type == ppc_stub_plt_call) |
794e51c0 | 12891 | { |
6e1816be AM |
12892 | if (!htab->opd_abi |
12893 | && htab->params->plt_localentry0 != 0 | |
12894 | && is_elfv2_localentry0 (&hash->elf)) | |
12895 | htab->has_plt_localentry0 = 1; | |
12896 | else if (irela + 1 < irelaend | |
12897 | && irela[1].r_offset == irela->r_offset + 4 | |
12898 | && (ELF64_R_TYPE (irela[1].r_info) | |
12899 | == R_PPC64_TOCSAVE)) | |
f378ab09 AM |
12900 | { |
12901 | if (!tocsave_find (htab, INSERT, | |
12902 | &local_syms, irela + 1, input_bfd)) | |
12903 | goto error_ret_free_internal; | |
12904 | } | |
f378ab09 AM |
12905 | else |
12906 | stub_type = ppc_stub_plt_call_r2save; | |
794e51c0 | 12907 | } |
3b421ab3 | 12908 | |
721956f4 | 12909 | /* Support for grouping stub sections. */ |
6f20ed8a | 12910 | id_sec = htab->sec_info[section->id].u.group->link_sec; |
721956f4 AM |
12911 | |
12912 | /* Get the name of this stub. */ | |
12913 | stub_name = ppc_stub_name (id_sec, sym_sec, hash, irela); | |
12914 | if (!stub_name) | |
12915 | goto error_ret_free_internal; | |
12916 | ||
12917 | stub_entry = ppc_stub_hash_lookup (&htab->stub_hash_table, | |
b34976b6 | 12918 | stub_name, FALSE, FALSE); |
721956f4 AM |
12919 | if (stub_entry != NULL) |
12920 | { | |
12921 | /* The proper stub has already been created. */ | |
12922 | free (stub_name); | |
794e51c0 AM |
12923 | if (stub_type == ppc_stub_plt_call_r2save) |
12924 | stub_entry->stub_type = stub_type; | |
721956f4 AM |
12925 | continue; |
12926 | } | |
12927 | ||
25f53a85 | 12928 | stub_entry = ppc_add_stub (stub_name, section, info); |
721956f4 AM |
12929 | if (stub_entry == NULL) |
12930 | { | |
12931 | free (stub_name); | |
6cdc0ccc AM |
12932 | error_ret_free_internal: |
12933 | if (elf_section_data (section)->relocs == NULL) | |
12934 | free (internal_relocs); | |
12935 | error_ret_free_local: | |
12936 | if (local_syms != NULL | |
12937 | && (symtab_hdr->contents | |
12938 | != (unsigned char *) local_syms)) | |
12939 | free (local_syms); | |
b34976b6 | 12940 | return FALSE; |
721956f4 AM |
12941 | } |
12942 | ||
ad8e1ba5 | 12943 | stub_entry->stub_type = stub_type; |
794e51c0 AM |
12944 | if (stub_type != ppc_stub_plt_call |
12945 | && stub_type != ppc_stub_plt_call_r2save) | |
e054468f AM |
12946 | { |
12947 | stub_entry->target_value = code_value; | |
12948 | stub_entry->target_section = code_sec; | |
12949 | } | |
12950 | else | |
12951 | { | |
12952 | stub_entry->target_value = sym_value; | |
12953 | stub_entry->target_section = sym_sec; | |
12954 | } | |
721956f4 | 12955 | stub_entry->h = hash; |
e054468f | 12956 | stub_entry->plt_ent = plt_ent; |
2d7ad24e AM |
12957 | stub_entry->symtype |
12958 | = hash ? hash->elf.type : ELF_ST_TYPE (sym->st_info); | |
6911b7dc | 12959 | stub_entry->other = hash ? hash->elf.other : sym->st_other; |
ee75fd95 AM |
12960 | |
12961 | if (stub_entry->h != NULL) | |
12962 | htab->stub_globals += 1; | |
721956f4 AM |
12963 | } |
12964 | ||
12965 | /* We're done with the internal relocs, free them. */ | |
6cdc0ccc | 12966 | if (elf_section_data (section)->relocs != internal_relocs) |
1e2f5b6e | 12967 | free (internal_relocs); |
721956f4 | 12968 | } |
6cdc0ccc AM |
12969 | |
12970 | if (local_syms != NULL | |
12971 | && symtab_hdr->contents != (unsigned char *) local_syms) | |
12972 | { | |
12973 | if (!info->keep_memory) | |
12974 | free (local_syms); | |
12975 | else | |
12976 | symtab_hdr->contents = (unsigned char *) local_syms; | |
12977 | } | |
721956f4 AM |
12978 | } |
12979 | ||
5c3dead3 | 12980 | /* We may have added some stubs. Find out the new size of the |
721956f4 | 12981 | stub sections. */ |
d4aaa2a0 AM |
12982 | for (group = htab->group; group != NULL; group = group->next) |
12983 | if (group->stub_sec != NULL) | |
ee75fd95 | 12984 | { |
d4aaa2a0 AM |
12985 | asection *stub_sec = group->stub_sec; |
12986 | ||
ea3d7d1c AM |
12987 | if (htab->stub_iteration <= STUB_SHRINK_ITER |
12988 | || stub_sec->rawsize < stub_sec->size) | |
12989 | /* Past STUB_SHRINK_ITER, rawsize is the max size seen. */ | |
12990 | stub_sec->rawsize = stub_sec->size; | |
ee75fd95 AM |
12991 | stub_sec->size = 0; |
12992 | stub_sec->reloc_count = 0; | |
84f5d08e | 12993 | stub_sec->flags &= ~SEC_RELOC; |
ee75fd95 | 12994 | } |
eea6121a | 12995 | |
ba21f564 AM |
12996 | if (htab->stub_iteration <= STUB_SHRINK_ITER |
12997 | || htab->brlt->rawsize < htab->brlt->size) | |
12998 | htab->brlt->rawsize = htab->brlt->size; | |
eea6121a | 12999 | htab->brlt->size = 0; |
84f5d08e AM |
13000 | htab->brlt->reloc_count = 0; |
13001 | htab->brlt->flags &= ~SEC_RELOC; | |
ee75fd95 | 13002 | if (htab->relbrlt != NULL) |
eea6121a | 13003 | htab->relbrlt->size = 0; |
721956f4 | 13004 | |
63bc6f6c | 13005 | bfd_hash_traverse (&htab->stub_hash_table, ppc_size_one_stub, info); |
721956f4 | 13006 | |
a4b6fadd AM |
13007 | for (group = htab->group; group != NULL; group = group->next) |
13008 | if (group->needs_save_res) | |
13009 | group->stub_sec->size += htab->sfpr->size; | |
13010 | ||
176a0d42 AM |
13011 | if (info->emitrelocations |
13012 | && htab->glink != NULL && htab->glink->size != 0) | |
13013 | { | |
13014 | htab->glink->reloc_count = 1; | |
13015 | htab->glink->flags |= SEC_RELOC; | |
13016 | } | |
13017 | ||
58d180e8 AM |
13018 | if (htab->glink_eh_frame != NULL |
13019 | && !bfd_is_abs_section (htab->glink_eh_frame->output_section) | |
2d0d44d5 | 13020 | && htab->glink_eh_frame->output_section->size > 8) |
58d180e8 | 13021 | { |
2e0ce1c8 | 13022 | size_t size = 0, align = 4; |
58d180e8 | 13023 | |
d4aaa2a0 AM |
13024 | for (group = htab->group; group != NULL; group = group->next) |
13025 | if (group->stub_sec != NULL) | |
13026 | size += stub_eh_frame_size (group, align); | |
58d180e8 | 13027 | if (htab->glink != NULL && htab->glink->size != 0) |
2e0ce1c8 | 13028 | size += (24 + align - 1) & -align; |
58d180e8 | 13029 | if (size != 0) |
2e0ce1c8 AM |
13030 | size += (sizeof (glink_eh_frame_cie) + align - 1) & -align; |
13031 | align = 1ul << htab->glink_eh_frame->output_section->alignment_power; | |
13032 | size = (size + align - 1) & -align; | |
58d180e8 AM |
13033 | htab->glink_eh_frame->rawsize = htab->glink_eh_frame->size; |
13034 | htab->glink_eh_frame->size = size; | |
13035 | } | |
13036 | ||
e7d1c40c | 13037 | if (htab->params->plt_stub_align != 0) |
d4aaa2a0 AM |
13038 | for (group = htab->group; group != NULL; group = group->next) |
13039 | if (group->stub_sec != NULL) | |
691d2e9a AM |
13040 | { |
13041 | int align = abs (htab->params->plt_stub_align); | |
13042 | group->stub_sec->size | |
13043 | = (group->stub_sec->size + (1 << align) - 1) & -(1 << align); | |
13044 | } | |
d4aaa2a0 AM |
13045 | |
13046 | for (group = htab->group; group != NULL; group = group->next) | |
13047 | if (group->stub_sec != NULL | |
13048 | && group->stub_sec->rawsize != group->stub_sec->size | |
c9301e31 | 13049 | && (htab->stub_iteration <= STUB_SHRINK_ITER |
d4aaa2a0 | 13050 | || group->stub_sec->rawsize < group->stub_sec->size)) |
5c3dead3 AM |
13051 | break; |
13052 | ||
d4aaa2a0 | 13053 | if (group == NULL |
ba21f564 AM |
13054 | && (htab->brlt->rawsize == htab->brlt->size |
13055 | || (htab->stub_iteration > STUB_SHRINK_ITER | |
13056 | && htab->brlt->rawsize > htab->brlt->size)) | |
58d180e8 AM |
13057 | && (htab->glink_eh_frame == NULL |
13058 | || htab->glink_eh_frame->rawsize == htab->glink_eh_frame->size)) | |
5c3dead3 AM |
13059 | break; |
13060 | ||
721956f4 | 13061 | /* Ask the linker to do its stuff. */ |
e7d1c40c | 13062 | (*htab->params->layout_sections_again) (); |
721956f4 AM |
13063 | } |
13064 | ||
da44f4e5 AM |
13065 | if (htab->glink_eh_frame != NULL |
13066 | && htab->glink_eh_frame->size != 0) | |
13067 | { | |
13068 | bfd_vma val; | |
13069 | bfd_byte *p, *last_fde; | |
13070 | size_t last_fde_len, size, align, pad; | |
d4aaa2a0 | 13071 | struct map_stub *group; |
da44f4e5 AM |
13072 | |
13073 | p = bfd_zalloc (htab->glink_eh_frame->owner, htab->glink_eh_frame->size); | |
13074 | if (p == NULL) | |
13075 | return FALSE; | |
13076 | htab->glink_eh_frame->contents = p; | |
13077 | last_fde = p; | |
2e0ce1c8 | 13078 | align = 4; |
da44f4e5 AM |
13079 | |
13080 | memcpy (p, glink_eh_frame_cie, sizeof (glink_eh_frame_cie)); | |
13081 | /* CIE length (rewrite in case little-endian). */ | |
2e0ce1c8 | 13082 | last_fde_len = ((sizeof (glink_eh_frame_cie) + align - 1) & -align) - 4; |
da44f4e5 | 13083 | bfd_put_32 (htab->elf.dynobj, last_fde_len, p); |
2e0ce1c8 | 13084 | p += last_fde_len + 4; |
da44f4e5 | 13085 | |
d4aaa2a0 AM |
13086 | for (group = htab->group; group != NULL; group = group->next) |
13087 | if (group->stub_sec != NULL) | |
da44f4e5 AM |
13088 | { |
13089 | last_fde = p; | |
d4aaa2a0 | 13090 | last_fde_len = stub_eh_frame_size (group, align) - 4; |
da44f4e5 | 13091 | /* FDE length. */ |
2e0ce1c8 | 13092 | bfd_put_32 (htab->elf.dynobj, last_fde_len, p); |
da44f4e5 AM |
13093 | p += 4; |
13094 | /* CIE pointer. */ | |
13095 | val = p - htab->glink_eh_frame->contents; | |
13096 | bfd_put_32 (htab->elf.dynobj, val, p); | |
13097 | p += 4; | |
13098 | /* Offset to stub section, written later. */ | |
13099 | p += 4; | |
13100 | /* stub section size. */ | |
d4aaa2a0 | 13101 | bfd_put_32 (htab->elf.dynobj, group->stub_sec->size, p); |
da44f4e5 AM |
13102 | p += 4; |
13103 | /* Augmentation. */ | |
13104 | p += 1; | |
d4aaa2a0 AM |
13105 | if (group->tls_get_addr_opt_bctrl != -1u) |
13106 | { | |
13107 | unsigned int to_bctrl = group->tls_get_addr_opt_bctrl / 4; | |
13108 | ||
13109 | /* This FDE needs more than just the default. | |
13110 | Describe __tls_get_addr_opt stub LR. */ | |
13111 | if (to_bctrl < 64) | |
13112 | *p++ = DW_CFA_advance_loc + to_bctrl; | |
13113 | else if (to_bctrl < 256) | |
13114 | { | |
13115 | *p++ = DW_CFA_advance_loc1; | |
13116 | *p++ = to_bctrl; | |
13117 | } | |
13118 | else if (to_bctrl < 65536) | |
13119 | { | |
13120 | *p++ = DW_CFA_advance_loc2; | |
13121 | bfd_put_16 (htab->elf.dynobj, to_bctrl, p); | |
13122 | p += 2; | |
13123 | } | |
13124 | else | |
13125 | { | |
13126 | *p++ = DW_CFA_advance_loc4; | |
13127 | bfd_put_32 (htab->elf.dynobj, to_bctrl, p); | |
13128 | p += 4; | |
13129 | } | |
13130 | *p++ = DW_CFA_offset_extended_sf; | |
13131 | *p++ = 65; | |
13132 | *p++ = -(STK_LINKER (htab) / 8) & 0x7f; | |
13133 | *p++ = DW_CFA_advance_loc + 4; | |
13134 | *p++ = DW_CFA_restore_extended; | |
13135 | *p++ = 65; | |
13136 | } | |
da44f4e5 | 13137 | /* Pad. */ |
d4aaa2a0 | 13138 | p = last_fde + last_fde_len + 4; |
da44f4e5 AM |
13139 | } |
13140 | if (htab->glink != NULL && htab->glink->size != 0) | |
13141 | { | |
13142 | last_fde = p; | |
2e0ce1c8 | 13143 | last_fde_len = ((24 + align - 1) & -align) - 4; |
da44f4e5 | 13144 | /* FDE length. */ |
2e0ce1c8 | 13145 | bfd_put_32 (htab->elf.dynobj, last_fde_len, p); |
da44f4e5 AM |
13146 | p += 4; |
13147 | /* CIE pointer. */ | |
13148 | val = p - htab->glink_eh_frame->contents; | |
13149 | bfd_put_32 (htab->elf.dynobj, val, p); | |
13150 | p += 4; | |
13151 | /* Offset to .glink, written later. */ | |
13152 | p += 4; | |
13153 | /* .glink size. */ | |
13154 | bfd_put_32 (htab->elf.dynobj, htab->glink->size - 8, p); | |
13155 | p += 4; | |
13156 | /* Augmentation. */ | |
13157 | p += 1; | |
13158 | ||
13159 | *p++ = DW_CFA_advance_loc + 1; | |
13160 | *p++ = DW_CFA_register; | |
13161 | *p++ = 65; | |
9f08fa5c | 13162 | *p++ = htab->opd_abi ? 12 : 0; |
15a3a14f | 13163 | *p++ = DW_CFA_advance_loc + (htab->opd_abi ? 5 : 7); |
da44f4e5 AM |
13164 | *p++ = DW_CFA_restore_extended; |
13165 | *p++ = 65; | |
2e0ce1c8 | 13166 | p += ((24 + align - 1) & -align) - 24; |
da44f4e5 AM |
13167 | } |
13168 | /* Subsume any padding into the last FDE if user .eh_frame | |
13169 | sections are aligned more than glink_eh_frame. Otherwise any | |
13170 | zero padding will be seen as a terminator. */ | |
2e0ce1c8 | 13171 | align = 1ul << htab->glink_eh_frame->output_section->alignment_power; |
da44f4e5 | 13172 | size = p - htab->glink_eh_frame->contents; |
2e0ce1c8 | 13173 | pad = ((size + align - 1) & -align) - size; |
da44f4e5 AM |
13174 | htab->glink_eh_frame->size = size + pad; |
13175 | bfd_put_32 (htab->elf.dynobj, last_fde_len + pad, last_fde); | |
13176 | } | |
13177 | ||
d969d15f AM |
13178 | maybe_strip_output (info, htab->brlt); |
13179 | if (htab->glink_eh_frame != NULL) | |
13180 | maybe_strip_output (info, htab->glink_eh_frame); | |
721956f4 | 13181 | |
b34976b6 | 13182 | return TRUE; |
721956f4 AM |
13183 | } |
13184 | ||
13185 | /* Called after we have determined section placement. If sections | |
805fc799 | 13186 | move, we'll be called again. Provide a value for TOCstart. */ |
721956f4 | 13187 | |
805fc799 | 13188 | bfd_vma |
1c865ab2 | 13189 | ppc64_elf_set_toc (struct bfd_link_info *info, bfd *obfd) |
721956f4 | 13190 | { |
805fc799 | 13191 | asection *s; |
a27e685f | 13192 | bfd_vma TOCstart, adjust; |
721956f4 | 13193 | |
43417696 AM |
13194 | if (info != NULL) |
13195 | { | |
13196 | struct elf_link_hash_entry *h; | |
13197 | struct elf_link_hash_table *htab = elf_hash_table (info); | |
13198 | ||
13199 | if (is_elf_hash_table (htab) | |
13200 | && htab->hgot != NULL) | |
13201 | h = htab->hgot; | |
13202 | else | |
13203 | { | |
13204 | h = elf_link_hash_lookup (htab, ".TOC.", FALSE, FALSE, TRUE); | |
13205 | if (is_elf_hash_table (htab)) | |
13206 | htab->hgot = h; | |
13207 | } | |
13208 | if (h != NULL | |
13209 | && h->root.type == bfd_link_hash_defined | |
13210 | && !h->root.linker_def | |
13211 | && (!is_elf_hash_table (htab) | |
13212 | || h->def_regular)) | |
13213 | { | |
13214 | TOCstart = (h->root.u.def.value - TOC_BASE_OFF | |
13215 | + h->root.u.def.section->output_offset | |
13216 | + h->root.u.def.section->output_section->vma); | |
13217 | _bfd_set_gp_value (obfd, TOCstart); | |
13218 | return TOCstart; | |
13219 | } | |
13220 | } | |
13221 | ||
805fc799 AM |
13222 | /* The TOC consists of sections .got, .toc, .tocbss, .plt in that |
13223 | order. The TOC starts where the first of these sections starts. */ | |
13224 | s = bfd_get_section_by_name (obfd, ".got"); | |
e054468f | 13225 | if (s == NULL || (s->flags & SEC_EXCLUDE) != 0) |
805fc799 | 13226 | s = bfd_get_section_by_name (obfd, ".toc"); |
e054468f | 13227 | if (s == NULL || (s->flags & SEC_EXCLUDE) != 0) |
805fc799 | 13228 | s = bfd_get_section_by_name (obfd, ".tocbss"); |
e054468f | 13229 | if (s == NULL || (s->flags & SEC_EXCLUDE) != 0) |
805fc799 | 13230 | s = bfd_get_section_by_name (obfd, ".plt"); |
e054468f | 13231 | if (s == NULL || (s->flags & SEC_EXCLUDE) != 0) |
805fc799 AM |
13232 | { |
13233 | /* This may happen for | |
13234 | o references to TOC base (SYM@toc / TOC[tc0]) without a | |
13235 | .toc directive | |
13236 | o bad linker script | |
13237 | o --gc-sections and empty TOC sections | |
13238 | ||
13239 | FIXME: Warn user? */ | |
13240 | ||
13241 | /* Look for a likely section. We probably won't even be | |
13242 | using TOCstart. */ | |
13243 | for (s = obfd->sections; s != NULL; s = s->next) | |
e054468f AM |
13244 | if ((s->flags & (SEC_ALLOC | SEC_SMALL_DATA | SEC_READONLY |
13245 | | SEC_EXCLUDE)) | |
805fc799 AM |
13246 | == (SEC_ALLOC | SEC_SMALL_DATA)) |
13247 | break; | |
721956f4 | 13248 | if (s == NULL) |
805fc799 | 13249 | for (s = obfd->sections; s != NULL; s = s->next) |
e054468f | 13250 | if ((s->flags & (SEC_ALLOC | SEC_SMALL_DATA | SEC_EXCLUDE)) |
805fc799 AM |
13251 | == (SEC_ALLOC | SEC_SMALL_DATA)) |
13252 | break; | |
721956f4 | 13253 | if (s == NULL) |
805fc799 | 13254 | for (s = obfd->sections; s != NULL; s = s->next) |
e054468f AM |
13255 | if ((s->flags & (SEC_ALLOC | SEC_READONLY | SEC_EXCLUDE)) |
13256 | == SEC_ALLOC) | |
805fc799 | 13257 | break; |
721956f4 | 13258 | if (s == NULL) |
805fc799 | 13259 | for (s = obfd->sections; s != NULL; s = s->next) |
e054468f | 13260 | if ((s->flags & (SEC_ALLOC | SEC_EXCLUDE)) == SEC_ALLOC) |
805fc799 AM |
13261 | break; |
13262 | } | |
721956f4 | 13263 | |
805fc799 AM |
13264 | TOCstart = 0; |
13265 | if (s != NULL) | |
13266 | TOCstart = s->output_section->vma + s->output_offset; | |
721956f4 | 13267 | |
a27e685f AM |
13268 | /* Force alignment. */ |
13269 | adjust = TOCstart & (TOC_BASE_ALIGN - 1); | |
13270 | TOCstart -= adjust; | |
1c865ab2 AM |
13271 | _bfd_set_gp_value (obfd, TOCstart); |
13272 | ||
810d4e75 | 13273 | if (info != NULL && s != NULL) |
1c865ab2 AM |
13274 | { |
13275 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
13276 | ||
810d4e75 AM |
13277 | if (htab != NULL) |
13278 | { | |
13279 | if (htab->elf.hgot != NULL) | |
13280 | { | |
a27e685f | 13281 | htab->elf.hgot->root.u.def.value = TOC_BASE_OFF - adjust; |
810d4e75 AM |
13282 | htab->elf.hgot->root.u.def.section = s; |
13283 | } | |
13284 | } | |
13285 | else | |
1c865ab2 | 13286 | { |
810d4e75 AM |
13287 | struct bfd_link_hash_entry *bh = NULL; |
13288 | _bfd_generic_link_add_one_symbol (info, obfd, ".TOC.", BSF_GLOBAL, | |
a27e685f AM |
13289 | s, TOC_BASE_OFF - adjust, |
13290 | NULL, FALSE, FALSE, &bh); | |
1c865ab2 AM |
13291 | } |
13292 | } | |
805fc799 | 13293 | return TOCstart; |
721956f4 AM |
13294 | } |
13295 | ||
a345bc8d | 13296 | /* Called via elf_link_hash_traverse from ppc64_elf_build_stubs to |
49c09209 | 13297 | write out any global entry stubs, and PLT relocations. */ |
a345bc8d AM |
13298 | |
13299 | static bfd_boolean | |
49c09209 | 13300 | build_global_entry_stubs_and_plt (struct elf_link_hash_entry *h, void *inf) |
a345bc8d AM |
13301 | { |
13302 | struct bfd_link_info *info; | |
13303 | struct ppc_link_hash_table *htab; | |
49c09209 | 13304 | struct plt_entry *ent; |
a345bc8d AM |
13305 | asection *s; |
13306 | ||
13307 | if (h->root.type == bfd_link_hash_indirect) | |
13308 | return TRUE; | |
13309 | ||
49c09209 AM |
13310 | info = inf; |
13311 | htab = ppc_hash_table (info); | |
13312 | if (htab == NULL) | |
13313 | return FALSE; | |
13314 | ||
13315 | for (ent = h->plt.plist; ent != NULL; ent = ent->next) | |
13316 | if (ent->plt.offset != (bfd_vma) -1) | |
13317 | { | |
13318 | /* This symbol has an entry in the procedure linkage | |
13319 | table. Set it up. */ | |
13320 | Elf_Internal_Rela rela; | |
2d7ad24e | 13321 | asection *plt, *relplt; |
49c09209 AM |
13322 | bfd_byte *loc; |
13323 | ||
13324 | if (!htab->elf.dynamic_sections_created | |
13325 | || h->dynindx == -1) | |
13326 | { | |
13327 | if (!(h->def_regular | |
13328 | && (h->root.type == bfd_link_hash_defined | |
13329 | || h->root.type == bfd_link_hash_defweak))) | |
13330 | continue; | |
2d7ad24e AM |
13331 | if (h->type == STT_GNU_IFUNC) |
13332 | { | |
13333 | plt = htab->elf.iplt; | |
13334 | relplt = htab->elf.irelplt; | |
13335 | htab->local_ifunc_resolver = 1; | |
13336 | if (htab->opd_abi) | |
13337 | rela.r_info = ELF64_R_INFO (0, R_PPC64_JMP_IREL); | |
13338 | else | |
13339 | rela.r_info = ELF64_R_INFO (0, R_PPC64_IRELATIVE); | |
13340 | } | |
49c09209 | 13341 | else |
2d7ad24e AM |
13342 | { |
13343 | plt = htab->pltlocal; | |
13344 | if (bfd_link_pic (info)) | |
13345 | { | |
13346 | relplt = htab->relpltlocal; | |
13347 | if (htab->opd_abi) | |
13348 | rela.r_info = ELF64_R_INFO (0, R_PPC64_JMP_SLOT); | |
13349 | else | |
13350 | rela.r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE); | |
13351 | } | |
13352 | else | |
13353 | relplt = NULL; | |
13354 | } | |
49c09209 AM |
13355 | rela.r_addend = (h->root.u.def.value |
13356 | + h->root.u.def.section->output_offset | |
13357 | + h->root.u.def.section->output_section->vma | |
13358 | + ent->addend); | |
2d7ad24e AM |
13359 | |
13360 | if (relplt == NULL) | |
13361 | { | |
13362 | loc = plt->contents + ent->plt.offset; | |
13363 | bfd_put_64 (info->output_bfd, rela.r_addend, loc); | |
13364 | if (htab->opd_abi) | |
13365 | { | |
13366 | bfd_vma toc = elf_gp (info->output_bfd); | |
13367 | toc += htab->sec_info[h->root.u.def.section->id].toc_off; | |
13368 | bfd_put_64 (info->output_bfd, toc, loc + 8); | |
13369 | } | |
13370 | } | |
13371 | else | |
13372 | { | |
13373 | rela.r_offset = (plt->output_section->vma | |
13374 | + plt->output_offset | |
13375 | + ent->plt.offset); | |
13376 | loc = relplt->contents + (relplt->reloc_count++ | |
13377 | * sizeof (Elf64_External_Rela)); | |
13378 | bfd_elf64_swap_reloca_out (info->output_bfd, &rela, loc); | |
13379 | } | |
49c09209 AM |
13380 | } |
13381 | else | |
13382 | { | |
13383 | rela.r_offset = (htab->elf.splt->output_section->vma | |
13384 | + htab->elf.splt->output_offset | |
13385 | + ent->plt.offset); | |
13386 | rela.r_info = ELF64_R_INFO (h->dynindx, R_PPC64_JMP_SLOT); | |
13387 | rela.r_addend = ent->addend; | |
13388 | loc = (htab->elf.srelplt->contents | |
13389 | + ((ent->plt.offset - PLT_INITIAL_ENTRY_SIZE (htab)) | |
13390 | / PLT_ENTRY_SIZE (htab) * sizeof (Elf64_External_Rela))); | |
13391 | if (h->type == STT_GNU_IFUNC && is_static_defined (h)) | |
13392 | htab->maybe_local_ifunc_resolver = 1; | |
2d7ad24e | 13393 | bfd_elf64_swap_reloca_out (info->output_bfd, &rela, loc); |
49c09209 | 13394 | } |
49c09209 AM |
13395 | } |
13396 | ||
a345bc8d AM |
13397 | if (!h->pointer_equality_needed) |
13398 | return TRUE; | |
13399 | ||
13400 | if (h->def_regular) | |
13401 | return TRUE; | |
13402 | ||
9e390558 | 13403 | s = htab->global_entry; |
49c09209 AM |
13404 | if (s == NULL || s->size == 0) |
13405 | return TRUE; | |
13406 | ||
13407 | for (ent = h->plt.plist; ent != NULL; ent = ent->next) | |
13408 | if (ent->plt.offset != (bfd_vma) -1 | |
13409 | && ent->addend == 0) | |
a345bc8d AM |
13410 | { |
13411 | bfd_byte *p; | |
13412 | asection *plt; | |
13413 | bfd_vma off; | |
13414 | ||
a345bc8d | 13415 | p = s->contents + h->root.u.def.value; |
33e44f2e | 13416 | plt = htab->elf.splt; |
a345bc8d AM |
13417 | if (!htab->elf.dynamic_sections_created |
13418 | || h->dynindx == -1) | |
2d7ad24e AM |
13419 | { |
13420 | if (h->type == STT_GNU_IFUNC) | |
13421 | plt = htab->elf.iplt; | |
13422 | else | |
13423 | plt = htab->pltlocal; | |
13424 | } | |
49c09209 | 13425 | off = ent->plt.offset + plt->output_offset + plt->output_section->vma; |
a345bc8d AM |
13426 | off -= h->root.u.def.value + s->output_offset + s->output_section->vma; |
13427 | ||
13428 | if (off + 0x80008000 > 0xffffffff || (off & 3) != 0) | |
13429 | { | |
13430 | info->callbacks->einfo | |
c1c8c1ef | 13431 | (_("%P: linkage table error against `%pT'\n"), |
a345bc8d AM |
13432 | h->root.root.string); |
13433 | bfd_set_error (bfd_error_bad_value); | |
13434 | htab->stub_error = TRUE; | |
13435 | } | |
13436 | ||
7341d5e2 AM |
13437 | htab->stub_count[ppc_stub_global_entry - 1] += 1; |
13438 | if (htab->params->emit_stub_syms) | |
13439 | { | |
13440 | size_t len = strlen (h->root.root.string); | |
13441 | char *name = bfd_malloc (sizeof "12345678.global_entry." + len); | |
13442 | ||
13443 | if (name == NULL) | |
13444 | return FALSE; | |
13445 | ||
13446 | sprintf (name, "%08x.global_entry.%s", s->id, h->root.root.string); | |
13447 | h = elf_link_hash_lookup (&htab->elf, name, TRUE, FALSE, FALSE); | |
13448 | if (h == NULL) | |
13449 | return FALSE; | |
13450 | if (h->root.type == bfd_link_hash_new) | |
13451 | { | |
13452 | h->root.type = bfd_link_hash_defined; | |
13453 | h->root.u.def.section = s; | |
13454 | h->root.u.def.value = p - s->contents; | |
13455 | h->ref_regular = 1; | |
13456 | h->def_regular = 1; | |
13457 | h->ref_regular_nonweak = 1; | |
13458 | h->forced_local = 1; | |
13459 | h->non_elf = 0; | |
2ec55de3 | 13460 | h->root.linker_def = 1; |
7341d5e2 AM |
13461 | } |
13462 | } | |
13463 | ||
a345bc8d AM |
13464 | if (PPC_HA (off) != 0) |
13465 | { | |
13466 | bfd_put_32 (s->owner, ADDIS_R12_R12 | PPC_HA (off), p); | |
13467 | p += 4; | |
13468 | } | |
13469 | bfd_put_32 (s->owner, LD_R12_0R12 | PPC_LO (off), p); | |
13470 | p += 4; | |
13471 | bfd_put_32 (s->owner, MTCTR_R12, p); | |
13472 | p += 4; | |
407aa07c | 13473 | bfd_put_32 (s->owner, BCTR, p); |
a345bc8d AM |
13474 | break; |
13475 | } | |
13476 | return TRUE; | |
13477 | } | |
13478 | ||
49c09209 AM |
13479 | /* Write PLT relocs for locals. */ |
13480 | ||
13481 | static bfd_boolean | |
13482 | write_plt_relocs_for_local_syms (struct bfd_link_info *info) | |
13483 | { | |
13484 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
13485 | bfd *ibfd; | |
13486 | ||
13487 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next) | |
13488 | { | |
13489 | struct got_entry **lgot_ents, **end_lgot_ents; | |
13490 | struct plt_entry **local_plt, **lplt, **end_local_plt; | |
13491 | Elf_Internal_Shdr *symtab_hdr; | |
13492 | bfd_size_type locsymcount; | |
13493 | Elf_Internal_Sym *local_syms = NULL; | |
13494 | struct plt_entry *ent; | |
13495 | ||
13496 | if (!is_ppc64_elf (ibfd)) | |
13497 | continue; | |
13498 | ||
13499 | lgot_ents = elf_local_got_ents (ibfd); | |
13500 | if (!lgot_ents) | |
13501 | continue; | |
13502 | ||
13503 | symtab_hdr = &elf_symtab_hdr (ibfd); | |
13504 | locsymcount = symtab_hdr->sh_info; | |
13505 | end_lgot_ents = lgot_ents + locsymcount; | |
13506 | local_plt = (struct plt_entry **) end_lgot_ents; | |
13507 | end_local_plt = local_plt + locsymcount; | |
13508 | for (lplt = local_plt; lplt < end_local_plt; ++lplt) | |
13509 | for (ent = *lplt; ent != NULL; ent = ent->next) | |
13510 | if (ent->plt.offset != (bfd_vma) -1) | |
13511 | { | |
13512 | Elf_Internal_Sym *sym; | |
13513 | asection *sym_sec; | |
13514 | asection *plt, *relplt; | |
13515 | bfd_byte *loc; | |
13516 | bfd_vma val; | |
49c09209 AM |
13517 | |
13518 | if (!get_sym_h (NULL, &sym, &sym_sec, NULL, &local_syms, | |
13519 | lplt - local_plt, ibfd)) | |
13520 | { | |
13521 | if (local_syms != NULL | |
13522 | && symtab_hdr->contents != (unsigned char *) local_syms) | |
13523 | free (local_syms); | |
13524 | return FALSE; | |
13525 | } | |
13526 | ||
13527 | val = sym->st_value + ent->addend; | |
13528 | val += PPC64_LOCAL_ENTRY_OFFSET (sym->st_other); | |
13529 | if (sym_sec != NULL && sym_sec->output_section != NULL) | |
13530 | val += sym_sec->output_offset + sym_sec->output_section->vma; | |
13531 | ||
2d7ad24e AM |
13532 | if (ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC) |
13533 | { | |
13534 | htab->local_ifunc_resolver = 1; | |
13535 | plt = htab->elf.iplt; | |
13536 | relplt = htab->elf.irelplt; | |
13537 | } | |
13538 | else | |
13539 | { | |
13540 | plt = htab->pltlocal; | |
13541 | relplt = bfd_link_pic (info) ? htab->relpltlocal : NULL; | |
13542 | } | |
49c09209 | 13543 | |
2d7ad24e AM |
13544 | if (relplt == NULL) |
13545 | { | |
13546 | loc = plt->contents + ent->plt.offset; | |
13547 | bfd_put_64 (info->output_bfd, val, loc); | |
13548 | if (htab->opd_abi) | |
13549 | { | |
13550 | bfd_vma toc = elf_gp (ibfd); | |
13551 | bfd_put_64 (info->output_bfd, toc, loc + 8); | |
13552 | } | |
13553 | } | |
49c09209 | 13554 | else |
2d7ad24e AM |
13555 | { |
13556 | Elf_Internal_Rela rela; | |
13557 | rela.r_offset = (ent->plt.offset | |
13558 | + plt->output_offset | |
13559 | + plt->output_section->vma); | |
13560 | if (ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC) | |
13561 | { | |
13562 | if (htab->opd_abi) | |
13563 | rela.r_info = ELF64_R_INFO (0, R_PPC64_JMP_IREL); | |
13564 | else | |
13565 | rela.r_info = ELF64_R_INFO (0, R_PPC64_IRELATIVE); | |
13566 | } | |
13567 | else | |
13568 | { | |
13569 | if (htab->opd_abi) | |
13570 | rela.r_info = ELF64_R_INFO (0, R_PPC64_JMP_SLOT); | |
13571 | else | |
13572 | rela.r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE); | |
13573 | } | |
13574 | rela.r_addend = val; | |
13575 | loc = relplt->contents + (relplt->reloc_count++ | |
13576 | * sizeof (Elf64_External_Rela)); | |
13577 | bfd_elf64_swap_reloca_out (info->output_bfd, &rela, loc); | |
13578 | } | |
49c09209 AM |
13579 | } |
13580 | ||
13581 | if (local_syms != NULL | |
13582 | && symtab_hdr->contents != (unsigned char *) local_syms) | |
13583 | { | |
13584 | if (!info->keep_memory) | |
13585 | free (local_syms); | |
13586 | else | |
13587 | symtab_hdr->contents = (unsigned char *) local_syms; | |
13588 | } | |
13589 | } | |
13590 | return TRUE; | |
13591 | } | |
13592 | ||
721956f4 AM |
13593 | /* Build all the stubs associated with the current output file. |
13594 | The stubs are kept in a hash table attached to the main linker | |
13595 | hash table. This function is called via gldelf64ppc_finish. */ | |
13596 | ||
b34976b6 | 13597 | bfd_boolean |
e7d1c40c | 13598 | ppc64_elf_build_stubs (struct bfd_link_info *info, |
4ce794b7 | 13599 | char **stats) |
5d1634d7 AM |
13600 | { |
13601 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
a4b6fadd | 13602 | struct map_stub *group; |
721956f4 | 13603 | asection *stub_sec; |
5d1634d7 | 13604 | bfd_byte *p; |
e717da7e | 13605 | int stub_sec_count = 0; |
5d1634d7 | 13606 | |
4dfe6ac6 NC |
13607 | if (htab == NULL) |
13608 | return FALSE; | |
13609 | ||
eea6121a | 13610 | /* Allocate memory to hold the linker stubs. */ |
d4aaa2a0 AM |
13611 | for (group = htab->group; group != NULL; group = group->next) |
13612 | if ((stub_sec = group->stub_sec) != NULL | |
eea6121a | 13613 | && stub_sec->size != 0) |
e717da7e | 13614 | { |
e7d1c40c | 13615 | stub_sec->contents = bfd_zalloc (htab->params->stub_bfd, stub_sec->size); |
eea6121a AM |
13616 | if (stub_sec->contents == NULL) |
13617 | return FALSE; | |
eea6121a | 13618 | stub_sec->size = 0; |
e717da7e | 13619 | } |
5d1634d7 | 13620 | |
23eb7e01 | 13621 | if (htab->glink != NULL && htab->glink->size != 0) |
5d1634d7 | 13622 | { |
9f951329 | 13623 | unsigned int indx; |
ad8e1ba5 | 13624 | bfd_vma plt0; |
9f951329 | 13625 | |
721956f4 | 13626 | /* Build the .glink plt call stub. */ |
e7d1c40c | 13627 | if (htab->params->emit_stub_syms) |
97b639ba AM |
13628 | { |
13629 | struct elf_link_hash_entry *h; | |
468392fb AM |
13630 | h = elf_link_hash_lookup (&htab->elf, "__glink_PLTresolve", |
13631 | TRUE, FALSE, FALSE); | |
97b639ba AM |
13632 | if (h == NULL) |
13633 | return FALSE; | |
13634 | if (h->root.type == bfd_link_hash_new) | |
13635 | { | |
13636 | h->root.type = bfd_link_hash_defined; | |
13637 | h->root.u.def.section = htab->glink; | |
ee4bf8d2 | 13638 | h->root.u.def.value = 8; |
f5385ebf AM |
13639 | h->ref_regular = 1; |
13640 | h->def_regular = 1; | |
13641 | h->ref_regular_nonweak = 1; | |
13642 | h->forced_local = 1; | |
13643 | h->non_elf = 0; | |
2ec55de3 | 13644 | h->root.linker_def = 1; |
97b639ba AM |
13645 | } |
13646 | } | |
33e44f2e AM |
13647 | plt0 = (htab->elf.splt->output_section->vma |
13648 | + htab->elf.splt->output_offset | |
13649 | - 16); | |
176a0d42 AM |
13650 | if (info->emitrelocations) |
13651 | { | |
13652 | Elf_Internal_Rela *r = get_relocs (htab->glink, 1); | |
13653 | if (r == NULL) | |
13654 | return FALSE; | |
13655 | r->r_offset = (htab->glink->output_offset | |
13656 | + htab->glink->output_section->vma); | |
13657 | r->r_info = ELF64_R_INFO (0, R_PPC64_REL64); | |
13658 | r->r_addend = plt0; | |
13659 | } | |
4ce794b7 | 13660 | p = htab->glink->contents; |
176a0d42 | 13661 | plt0 -= htab->glink->output_section->vma + htab->glink->output_offset; |
ee4bf8d2 AM |
13662 | bfd_put_64 (htab->glink->owner, plt0, p); |
13663 | p += 8; | |
b9e5796b AM |
13664 | if (htab->opd_abi) |
13665 | { | |
13666 | bfd_put_32 (htab->glink->owner, MFLR_R12, p); | |
13667 | p += 4; | |
13668 | bfd_put_32 (htab->glink->owner, BCL_20_31, p); | |
13669 | p += 4; | |
13670 | bfd_put_32 (htab->glink->owner, MFLR_R11, p); | |
13671 | p += 4; | |
13672 | bfd_put_32 (htab->glink->owner, LD_R2_0R11 | (-16 & 0xfffc), p); | |
13673 | p += 4; | |
13674 | bfd_put_32 (htab->glink->owner, MTLR_R12, p); | |
13675 | p += 4; | |
13676 | bfd_put_32 (htab->glink->owner, ADD_R11_R2_R11, p); | |
13677 | p += 4; | |
13678 | bfd_put_32 (htab->glink->owner, LD_R12_0R11, p); | |
13679 | p += 4; | |
13680 | bfd_put_32 (htab->glink->owner, LD_R2_0R11 | 8, p); | |
13681 | p += 4; | |
13682 | bfd_put_32 (htab->glink->owner, MTCTR_R12, p); | |
13683 | p += 4; | |
13684 | bfd_put_32 (htab->glink->owner, LD_R11_0R11 | 16, p); | |
13685 | p += 4; | |
13686 | } | |
13687 | else | |
13688 | { | |
13689 | bfd_put_32 (htab->glink->owner, MFLR_R0, p); | |
13690 | p += 4; | |
13691 | bfd_put_32 (htab->glink->owner, BCL_20_31, p); | |
13692 | p += 4; | |
13693 | bfd_put_32 (htab->glink->owner, MFLR_R11, p); | |
13694 | p += 4; | |
f378ab09 AM |
13695 | bfd_put_32 (htab->glink->owner, STD_R2_0R1 + 24, p); |
13696 | p += 4; | |
b9e5796b AM |
13697 | bfd_put_32 (htab->glink->owner, LD_R2_0R11 | (-16 & 0xfffc), p); |
13698 | p += 4; | |
13699 | bfd_put_32 (htab->glink->owner, MTLR_R0, p); | |
13700 | p += 4; | |
13701 | bfd_put_32 (htab->glink->owner, SUB_R12_R12_R11, p); | |
13702 | p += 4; | |
13703 | bfd_put_32 (htab->glink->owner, ADD_R11_R2_R11, p); | |
13704 | p += 4; | |
13705 | bfd_put_32 (htab->glink->owner, ADDI_R0_R12 | (-48 & 0xffff), p); | |
13706 | p += 4; | |
13707 | bfd_put_32 (htab->glink->owner, LD_R12_0R11, p); | |
13708 | p += 4; | |
13709 | bfd_put_32 (htab->glink->owner, SRDI_R0_R0_2, p); | |
13710 | p += 4; | |
13711 | bfd_put_32 (htab->glink->owner, MTCTR_R12, p); | |
13712 | p += 4; | |
13713 | bfd_put_32 (htab->glink->owner, LD_R11_0R11 | 8, p); | |
13714 | p += 4; | |
13715 | } | |
407aa07c AM |
13716 | bfd_put_32 (htab->glink->owner, BCTR, p); |
13717 | p += 4; | |
c75bc4f7 | 13718 | BFD_ASSERT (p == htab->glink->contents + GLINK_PLTRESOLVE_SIZE (htab)); |
ad8e1ba5 | 13719 | |
9f951329 AM |
13720 | /* Build the .glink lazy link call stubs. */ |
13721 | indx = 0; | |
9e390558 | 13722 | while (p < htab->glink->contents + htab->glink->size) |
9f951329 | 13723 | { |
b9e5796b | 13724 | if (htab->opd_abi) |
9f951329 | 13725 | { |
b9e5796b AM |
13726 | if (indx < 0x8000) |
13727 | { | |
13728 | bfd_put_32 (htab->glink->owner, LI_R0_0 | indx, p); | |
13729 | p += 4; | |
13730 | } | |
13731 | else | |
13732 | { | |
13733 | bfd_put_32 (htab->glink->owner, LIS_R0_0 | PPC_HI (indx), p); | |
13734 | p += 4; | |
13735 | bfd_put_32 (htab->glink->owner, ORI_R0_R0_0 | PPC_LO (indx), | |
13736 | p); | |
13737 | p += 4; | |
13738 | } | |
9f951329 | 13739 | } |
4ce794b7 | 13740 | bfd_put_32 (htab->glink->owner, |
ee4bf8d2 | 13741 | B_DOT | ((htab->glink->contents - p + 8) & 0x3fffffc), p); |
a16d5acb | 13742 | indx++; |
9f951329 AM |
13743 | p += 4; |
13744 | } | |
5d1634d7 | 13745 | } |
5d1634d7 | 13746 | |
49c09209 AM |
13747 | /* Build .glink global entry stubs, and PLT relocs for globals. */ |
13748 | elf_link_hash_traverse (&htab->elf, build_global_entry_stubs_and_plt, info); | |
13749 | ||
13750 | if (!write_plt_relocs_for_local_syms (info)) | |
13751 | return FALSE; | |
9e390558 | 13752 | |
7341d5e2 | 13753 | if (htab->brlt != NULL && htab->brlt->size != 0) |
721956f4 | 13754 | { |
4ce794b7 | 13755 | htab->brlt->contents = bfd_zalloc (htab->brlt->owner, |
eea6121a | 13756 | htab->brlt->size); |
4ce794b7 | 13757 | if (htab->brlt->contents == NULL) |
b34976b6 | 13758 | return FALSE; |
721956f4 | 13759 | } |
ee75fd95 | 13760 | if (htab->relbrlt != NULL && htab->relbrlt->size != 0) |
63bc6f6c AM |
13761 | { |
13762 | htab->relbrlt->contents = bfd_zalloc (htab->relbrlt->owner, | |
eea6121a | 13763 | htab->relbrlt->size); |
63bc6f6c AM |
13764 | if (htab->relbrlt->contents == NULL) |
13765 | return FALSE; | |
13766 | } | |
5d1634d7 | 13767 | |
721956f4 AM |
13768 | /* Build the stubs as directed by the stub hash table. */ |
13769 | bfd_hash_traverse (&htab->stub_hash_table, ppc_build_one_stub, info); | |
5d1634d7 | 13770 | |
a4b6fadd AM |
13771 | for (group = htab->group; group != NULL; group = group->next) |
13772 | if (group->needs_save_res) | |
7dda8d3c | 13773 | group->stub_sec->size += htab->sfpr->size; |
a4b6fadd | 13774 | |
aa8a7074 AM |
13775 | if (htab->relbrlt != NULL) |
13776 | htab->relbrlt->reloc_count = 0; | |
13777 | ||
e7d1c40c | 13778 | if (htab->params->plt_stub_align != 0) |
d4aaa2a0 AM |
13779 | for (group = htab->group; group != NULL; group = group->next) |
13780 | if ((stub_sec = group->stub_sec) != NULL) | |
691d2e9a AM |
13781 | { |
13782 | int align = abs (htab->params->plt_stub_align); | |
13783 | stub_sec->size = (stub_sec->size + (1 << align) - 1) & -(1 << align); | |
13784 | } | |
794e51c0 | 13785 | |
7dda8d3c AM |
13786 | for (group = htab->group; group != NULL; group = group->next) |
13787 | if (group->needs_save_res) | |
13788 | { | |
13789 | stub_sec = group->stub_sec; | |
13790 | memcpy (stub_sec->contents + stub_sec->size - htab->sfpr->size, | |
13791 | htab->sfpr->contents, htab->sfpr->size); | |
13792 | if (htab->params->emit_stub_syms) | |
13793 | { | |
13794 | unsigned int i; | |
13795 | ||
13796 | for (i = 0; i < ARRAY_SIZE (save_res_funcs); i++) | |
13797 | if (!sfpr_define (info, &save_res_funcs[i], stub_sec)) | |
13798 | return FALSE; | |
13799 | } | |
13800 | } | |
13801 | ||
d4aaa2a0 AM |
13802 | for (group = htab->group; group != NULL; group = group->next) |
13803 | if ((stub_sec = group->stub_sec) != NULL) | |
e717da7e AM |
13804 | { |
13805 | stub_sec_count += 1; | |
c9301e31 AM |
13806 | if (stub_sec->rawsize != stub_sec->size |
13807 | && (htab->stub_iteration <= STUB_SHRINK_ITER | |
13808 | || stub_sec->rawsize < stub_sec->size)) | |
e717da7e AM |
13809 | break; |
13810 | } | |
5d1634d7 | 13811 | |
25516cc5 | 13812 | if (group != NULL) |
5d1634d7 | 13813 | { |
b34976b6 | 13814 | htab->stub_error = TRUE; |
cf97bcb0 | 13815 | _bfd_error_handler (_("stubs don't match calculated size")); |
5d1634d7 | 13816 | } |
721956f4 | 13817 | |
d2a300cf AM |
13818 | if (htab->stub_error) |
13819 | return FALSE; | |
13820 | ||
13821 | if (stats != NULL) | |
13822 | { | |
db84fff3 | 13823 | size_t len; |
d2a300cf AM |
13824 | *stats = bfd_malloc (500); |
13825 | if (*stats == NULL) | |
13826 | return FALSE; | |
13827 | ||
db84fff3 AM |
13828 | len = sprintf (*stats, |
13829 | ngettext ("linker stubs in %u group\n", | |
13830 | "linker stubs in %u groups\n", | |
13831 | stub_sec_count), | |
13832 | stub_sec_count); | |
13833 | sprintf (*stats + len, _(" branch %lu\n" | |
13834 | " toc adjust %lu\n" | |
13835 | " long branch %lu\n" | |
13836 | " long toc adj %lu\n" | |
13837 | " plt call %lu\n" | |
13838 | " plt call toc %lu\n" | |
13839 | " global entry %lu"), | |
4ce794b7 AM |
13840 | htab->stub_count[ppc_stub_long_branch - 1], |
13841 | htab->stub_count[ppc_stub_long_branch_r2off - 1], | |
13842 | htab->stub_count[ppc_stub_plt_branch - 1], | |
13843 | htab->stub_count[ppc_stub_plt_branch_r2off - 1], | |
794e51c0 | 13844 | htab->stub_count[ppc_stub_plt_call - 1], |
7341d5e2 AM |
13845 | htab->stub_count[ppc_stub_plt_call_r2save - 1], |
13846 | htab->stub_count[ppc_stub_global_entry - 1]); | |
d2a300cf AM |
13847 | } |
13848 | return TRUE; | |
5bd4f169 AM |
13849 | } |
13850 | ||
60124e18 AM |
13851 | /* What to do when ld finds relocations against symbols defined in |
13852 | discarded sections. */ | |
13853 | ||
13854 | static unsigned int | |
13855 | ppc64_elf_action_discarded (asection *sec) | |
13856 | { | |
13857 | if (strcmp (".opd", sec->name) == 0) | |
13858 | return 0; | |
13859 | ||
13860 | if (strcmp (".toc", sec->name) == 0) | |
13861 | return 0; | |
13862 | ||
bce50a28 JJ |
13863 | if (strcmp (".toc1", sec->name) == 0) |
13864 | return 0; | |
13865 | ||
60124e18 AM |
13866 | return _bfd_elf_default_action_discarded (sec); |
13867 | } | |
13868 | ||
5bd4f169 AM |
13869 | /* The RELOCATE_SECTION function is called by the ELF backend linker |
13870 | to handle the relocations for a section. | |
13871 | ||
13872 | The relocs are always passed as Rela structures; if the section | |
13873 | actually uses Rel structures, the r_addend field will always be | |
13874 | zero. | |
13875 | ||
13876 | This function is responsible for adjust the section contents as | |
13877 | necessary, and (if using Rela relocs and generating a | |
1049f94e | 13878 | relocatable output file) adjusting the reloc addend as |
5bd4f169 AM |
13879 | necessary. |
13880 | ||
13881 | This function does not have to worry about setting the reloc | |
13882 | address or the reloc symbol index. | |
13883 | ||
13884 | LOCAL_SYMS is a pointer to the swapped in local symbols. | |
13885 | ||
13886 | LOCAL_SECTIONS is an array giving the section in the input file | |
13887 | corresponding to the st_shndx field of each local symbol. | |
13888 | ||
13889 | The global hash table entry for the global symbols can be found | |
13890 | via elf_sym_hashes (input_bfd). | |
13891 | ||
1049f94e | 13892 | When generating relocatable output, this function must handle |
5bd4f169 AM |
13893 | STB_LOCAL/STT_SECTION symbols specially. The output symbol is |
13894 | going to be the section symbol corresponding to the output | |
13895 | section, which means that the addend must be adjusted | |
13896 | accordingly. */ | |
13897 | ||
b34976b6 | 13898 | static bfd_boolean |
4ce794b7 AM |
13899 | ppc64_elf_relocate_section (bfd *output_bfd, |
13900 | struct bfd_link_info *info, | |
13901 | bfd *input_bfd, | |
13902 | asection *input_section, | |
13903 | bfd_byte *contents, | |
13904 | Elf_Internal_Rela *relocs, | |
13905 | Elf_Internal_Sym *local_syms, | |
13906 | asection **local_sections) | |
5bd4f169 | 13907 | { |
65f38f15 | 13908 | struct ppc_link_hash_table *htab; |
5bd4f169 AM |
13909 | Elf_Internal_Shdr *symtab_hdr; |
13910 | struct elf_link_hash_entry **sym_hashes; | |
5bd4f169 | 13911 | Elf_Internal_Rela *rel; |
c316a17c | 13912 | Elf_Internal_Rela *wrel; |
5bd4f169 | 13913 | Elf_Internal_Rela *relend; |
411e1bfb AM |
13914 | Elf_Internal_Rela outrel; |
13915 | bfd_byte *loc; | |
411e1bfb | 13916 | struct got_entry **local_got_ents; |
5bd4f169 | 13917 | bfd_vma TOCstart; |
b34976b6 AM |
13918 | bfd_boolean ret = TRUE; |
13919 | bfd_boolean is_opd; | |
794e51c0 AM |
13920 | /* Assume 'at' branch hints. */ |
13921 | bfd_boolean is_isa_v2 = TRUE; | |
95f0d0d2 | 13922 | bfd_vma d_offset = (bfd_big_endian (input_bfd) ? 2 : 0); |
5bd4f169 | 13923 | |
65f38f15 | 13924 | /* Initialize howto table if needed. */ |
5bd4f169 | 13925 | if (!ppc64_elf_howto_table[R_PPC64_ADDR32]) |
5bd4f169 AM |
13926 | ppc_howto_init (); |
13927 | ||
65f38f15 | 13928 | htab = ppc_hash_table (info); |
4dfe6ac6 NC |
13929 | if (htab == NULL) |
13930 | return FALSE; | |
ee75fd95 AM |
13931 | |
13932 | /* Don't relocate stub sections. */ | |
e7d1c40c | 13933 | if (input_section->owner == htab->params->stub_bfd) |
ee75fd95 AM |
13934 | return TRUE; |
13935 | ||
0c8d6e5c | 13936 | BFD_ASSERT (is_ppc64_elf (input_bfd)); |
0ffa91dd | 13937 | |
411e1bfb | 13938 | local_got_ents = elf_local_got_ents (input_bfd); |
5bd4f169 | 13939 | TOCstart = elf_gp (output_bfd); |
0ffa91dd | 13940 | symtab_hdr = &elf_symtab_hdr (input_bfd); |
5bd4f169 | 13941 | sym_hashes = elf_sym_hashes (input_bfd); |
7c8fe5c4 | 13942 | is_opd = ppc64_elf_section_data (input_section)->sec_type == sec_opd; |
65f38f15 | 13943 | |
c316a17c | 13944 | rel = wrel = relocs; |
5bd4f169 | 13945 | relend = relocs + input_section->reloc_count; |
c316a17c | 13946 | for (; rel < relend; wrel++, rel++) |
5bd4f169 | 13947 | { |
04c9666a | 13948 | enum elf_ppc64_reloc_type r_type; |
31c76678 | 13949 | bfd_vma addend; |
5bd4f169 AM |
13950 | bfd_reloc_status_type r; |
13951 | Elf_Internal_Sym *sym; | |
13952 | asection *sec; | |
039b3fef AM |
13953 | struct elf_link_hash_entry *h_elf; |
13954 | struct ppc_link_hash_entry *h; | |
13955 | struct ppc_link_hash_entry *fdh; | |
5bd4f169 | 13956 | const char *sym_name; |
0d4792f7 | 13957 | unsigned long r_symndx, toc_symndx; |
3a71aa26 | 13958 | bfd_vma toc_addend; |
f961d9dd AM |
13959 | unsigned char tls_mask, tls_gd, tls_type; |
13960 | unsigned char sym_type; | |
5bd4f169 | 13961 | bfd_vma relocation; |
23cedd1d | 13962 | bfd_boolean unresolved_reloc, save_unresolved_reloc; |
b34976b6 | 13963 | bfd_boolean warned; |
bc30df16 | 13964 | enum { DEST_NORMAL, DEST_OPD, DEST_STUB } reloc_dest; |
67f0cbdb | 13965 | unsigned int insn; |
e11840f9 | 13966 | unsigned int mask; |
721956f4 AM |
13967 | struct ppc_stub_hash_entry *stub_entry; |
13968 | bfd_vma max_br_offset; | |
13969 | bfd_vma from; | |
c316a17c | 13970 | Elf_Internal_Rela orig_rel; |
b80eed39 AM |
13971 | reloc_howto_type *howto; |
13972 | struct reloc_howto_struct alt_howto; | |
5bd4f169 | 13973 | |
c316a17c AM |
13974 | again: |
13975 | orig_rel = *rel; | |
13976 | ||
4ce794b7 | 13977 | r_type = ELF64_R_TYPE (rel->r_info); |
5bd4f169 | 13978 | r_symndx = ELF64_R_SYM (rel->r_info); |
ee87f2da AM |
13979 | |
13980 | /* For old style R_PPC64_TOC relocs with a zero symbol, use the | |
13981 | symbol of the previous ADDR64 reloc. The symbol gives us the | |
13982 | proper TOC base to use. */ | |
13983 | if (rel->r_info == ELF64_R_INFO (0, R_PPC64_TOC) | |
c316a17c AM |
13984 | && wrel != relocs |
13985 | && ELF64_R_TYPE (wrel[-1].r_info) == R_PPC64_ADDR64 | |
ee87f2da | 13986 | && is_opd) |
c316a17c | 13987 | r_symndx = ELF64_R_SYM (wrel[-1].r_info); |
ee87f2da | 13988 | |
4ce794b7 AM |
13989 | sym = NULL; |
13990 | sec = NULL; | |
039b3fef | 13991 | h_elf = NULL; |
4ce794b7 | 13992 | sym_name = NULL; |
b34976b6 AM |
13993 | unresolved_reloc = FALSE; |
13994 | warned = FALSE; | |
65f38f15 | 13995 | |
0b13192e | 13996 | if (r_symndx < symtab_hdr->sh_info) |
5bd4f169 AM |
13997 | { |
13998 | /* It's a local symbol. */ | |
74f0fb50 | 13999 | struct _opd_sec_data *opd; |
4025353c | 14000 | |
5bd4f169 AM |
14001 | sym = local_syms + r_symndx; |
14002 | sec = local_sections[r_symndx]; | |
26c61ae5 | 14003 | sym_name = bfd_elf_sym_name (input_bfd, symtab_hdr, sym, sec); |
0d4792f7 | 14004 | sym_type = ELF64_ST_TYPE (sym->st_info); |
8517fae7 | 14005 | relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel); |
74f0fb50 AM |
14006 | opd = get_opd_info (sec); |
14007 | if (opd != NULL && opd->adjust != NULL) | |
1e2f5b6e | 14008 | { |
51aecdc5 AM |
14009 | long adjust = opd->adjust[OPD_NDX (sym->st_value |
14010 | + rel->r_addend)]; | |
4025353c AM |
14011 | if (adjust == -1) |
14012 | relocation = 0; | |
14013 | else | |
4cc603a5 AM |
14014 | { |
14015 | /* If this is a relocation against the opd section sym | |
14016 | and we have edited .opd, adjust the reloc addend so | |
14017 | that ld -r and ld --emit-relocs output is correct. | |
14018 | If it is a reloc against some other .opd symbol, | |
14019 | then the symbol value will be adjusted later. */ | |
14020 | if (ELF_ST_TYPE (sym->st_info) == STT_SECTION) | |
14021 | rel->r_addend += adjust; | |
14022 | else | |
14023 | relocation += adjust; | |
14024 | } | |
1e2f5b6e | 14025 | } |
5bd4f169 AM |
14026 | } |
14027 | else | |
14028 | { | |
62d887d4 L |
14029 | bfd_boolean ignored; |
14030 | ||
b2a8e766 AM |
14031 | RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel, |
14032 | r_symndx, symtab_hdr, sym_hashes, | |
039b3fef | 14033 | h_elf, sec, relocation, |
62d887d4 | 14034 | unresolved_reloc, warned, ignored); |
039b3fef AM |
14035 | sym_name = h_elf->root.root.string; |
14036 | sym_type = h_elf->type; | |
b69fdb4e AM |
14037 | if (sec != NULL |
14038 | && sec->owner == output_bfd | |
14039 | && strcmp (sec->name, ".opd") == 0) | |
14040 | { | |
14041 | /* This is a symbol defined in a linker script. All | |
14042 | such are defined in output sections, even those | |
14043 | defined by simple assignment from a symbol defined in | |
14044 | an input section. Transfer the symbol to an | |
14045 | appropriate input .opd section, so that a branch to | |
14046 | this symbol will be mapped to the location specified | |
14047 | by the opd entry. */ | |
14048 | struct bfd_link_order *lo; | |
14049 | for (lo = sec->map_head.link_order; lo != NULL; lo = lo->next) | |
14050 | if (lo->type == bfd_indirect_link_order) | |
14051 | { | |
14052 | asection *isec = lo->u.indirect.section; | |
14053 | if (h_elf->root.u.def.value >= isec->output_offset | |
14054 | && h_elf->root.u.def.value < (isec->output_offset | |
14055 | + isec->size)) | |
14056 | { | |
14057 | h_elf->root.u.def.value -= isec->output_offset; | |
14058 | h_elf->root.u.def.section = isec; | |
14059 | sec = isec; | |
14060 | break; | |
14061 | } | |
14062 | } | |
14063 | } | |
5bd4f169 | 14064 | } |
039b3fef | 14065 | h = (struct ppc_link_hash_entry *) h_elf; |
5bd4f169 | 14066 | |
dbaa2011 | 14067 | if (sec != NULL && discarded_section (sec)) |
c316a17c AM |
14068 | { |
14069 | _bfd_clear_contents (ppc64_elf_howto_table[r_type], | |
14070 | input_bfd, input_section, | |
14071 | contents + rel->r_offset); | |
14072 | wrel->r_offset = rel->r_offset; | |
14073 | wrel->r_info = 0; | |
14074 | wrel->r_addend = 0; | |
14075 | ||
14076 | /* For ld -r, remove relocations in debug sections against | |
dcd2b8a0 | 14077 | symbols defined in discarded sections. Not done for |
c316a17c AM |
14078 | non-debug to preserve relocs in .eh_frame which the |
14079 | eh_frame editing code expects to be present. */ | |
14080 | if (bfd_link_relocatable (info) | |
14081 | && (input_section->flags & SEC_DEBUGGING)) | |
14082 | wrel--; | |
14083 | ||
14084 | continue; | |
14085 | } | |
ab96bf03 | 14086 | |
0e1862bb | 14087 | if (bfd_link_relocatable (info)) |
c316a17c | 14088 | goto copy_reloc; |
ab96bf03 | 14089 | |
f40da81b AM |
14090 | if (h != NULL && &h->elf == htab->elf.hgot) |
14091 | { | |
6f20ed8a | 14092 | relocation = TOCstart + htab->sec_info[input_section->id].toc_off; |
f40da81b AM |
14093 | sec = bfd_abs_section_ptr; |
14094 | unresolved_reloc = FALSE; | |
14095 | } | |
14096 | ||
951fd09b AM |
14097 | /* TLS optimizations. Replace instruction sequences and relocs |
14098 | based on information we collected in tls_optimize. We edit | |
14099 | RELOCS so that --emit-relocs will output something sensible | |
14100 | for the final instruction stream. */ | |
14101 | tls_mask = 0; | |
14102 | tls_gd = 0; | |
0d4792f7 | 14103 | toc_symndx = 0; |
727fc41e AM |
14104 | if (h != NULL) |
14105 | tls_mask = h->tls_mask; | |
14106 | else if (local_got_ents != NULL) | |
411e1bfb | 14107 | { |
e054468f AM |
14108 | struct plt_entry **local_plt = (struct plt_entry **) |
14109 | (local_got_ents + symtab_hdr->sh_info); | |
f961d9dd | 14110 | unsigned char *lgot_masks = (unsigned char *) |
e054468f | 14111 | (local_plt + symtab_hdr->sh_info); |
727fc41e AM |
14112 | tls_mask = lgot_masks[r_symndx]; |
14113 | } | |
37da22e5 | 14114 | if (((tls_mask & TLS_TLS) == 0 || tls_mask == (TLS_TLS | TLS_MARK)) |
727fc41e AM |
14115 | && (r_type == R_PPC64_TLS |
14116 | || r_type == R_PPC64_TLSGD | |
14117 | || r_type == R_PPC64_TLSLD)) | |
14118 | { | |
14119 | /* Check for toc tls entries. */ | |
f961d9dd | 14120 | unsigned char *toc_tls; |
0d4792f7 | 14121 | |
727fc41e AM |
14122 | if (!get_tls_mask (&toc_tls, &toc_symndx, &toc_addend, |
14123 | &local_syms, rel, input_bfd)) | |
14124 | return FALSE; | |
0d4792f7 | 14125 | |
727fc41e AM |
14126 | if (toc_tls) |
14127 | tls_mask = *toc_tls; | |
0d4792f7 AM |
14128 | } |
14129 | ||
14130 | /* Check that tls relocs are used with tls syms, and non-tls | |
14131 | relocs are used with non-tls syms. */ | |
cf35638d | 14132 | if (r_symndx != STN_UNDEF |
0d4792f7 AM |
14133 | && r_type != R_PPC64_NONE |
14134 | && (h == NULL | |
039b3fef AM |
14135 | || h->elf.root.type == bfd_link_hash_defined |
14136 | || h->elf.root.type == bfd_link_hash_defweak) | |
1d483afe AM |
14137 | && (IS_PPC64_TLS_RELOC (r_type) |
14138 | != (sym_type == STT_TLS | |
14139 | || (sym_type == STT_SECTION | |
14140 | && (sec->flags & SEC_THREAD_LOCAL) != 0)))) | |
0d4792f7 | 14141 | { |
37da22e5 | 14142 | if ((tls_mask & TLS_TLS) != 0 |
727fc41e AM |
14143 | && (r_type == R_PPC64_TLS |
14144 | || r_type == R_PPC64_TLSGD | |
14145 | || r_type == R_PPC64_TLSLD)) | |
0d4792f7 AM |
14146 | /* R_PPC64_TLS is OK against a symbol in the TOC. */ |
14147 | ; | |
14148 | else | |
25f53a85 | 14149 | info->callbacks->einfo |
1d483afe | 14150 | (!IS_PPC64_TLS_RELOC (r_type) |
695344c0 | 14151 | /* xgettext:c-format */ |
c1c8c1ef | 14152 | ? _("%H: %s used with TLS symbol `%pT'\n") |
695344c0 | 14153 | /* xgettext:c-format */ |
c1c8c1ef | 14154 | : _("%H: %s used with non-TLS symbol `%pT'\n"), |
25f53a85 | 14155 | input_bfd, input_section, rel->r_offset, |
0d4792f7 AM |
14156 | ppc64_elf_howto_table[r_type]->name, |
14157 | sym_name); | |
411e1bfb AM |
14158 | } |
14159 | ||
14160 | /* Ensure reloc mapping code below stays sane. */ | |
14161 | if (R_PPC64_TOC16_LO_DS != R_PPC64_TOC16_DS + 1 | |
14162 | || R_PPC64_TOC16_LO != R_PPC64_TOC16 + 1 | |
14163 | || (R_PPC64_GOT_TLSLD16 & 3) != (R_PPC64_GOT_TLSGD16 & 3) | |
14164 | || (R_PPC64_GOT_TLSLD16_LO & 3) != (R_PPC64_GOT_TLSGD16_LO & 3) | |
14165 | || (R_PPC64_GOT_TLSLD16_HI & 3) != (R_PPC64_GOT_TLSGD16_HI & 3) | |
14166 | || (R_PPC64_GOT_TLSLD16_HA & 3) != (R_PPC64_GOT_TLSGD16_HA & 3) | |
14167 | || (R_PPC64_GOT_TLSLD16 & 3) != (R_PPC64_GOT_TPREL16_DS & 3) | |
14168 | || (R_PPC64_GOT_TLSLD16_LO & 3) != (R_PPC64_GOT_TPREL16_LO_DS & 3) | |
14169 | || (R_PPC64_GOT_TLSLD16_HI & 3) != (R_PPC64_GOT_TPREL16_HI & 3) | |
14170 | || (R_PPC64_GOT_TLSLD16_HA & 3) != (R_PPC64_GOT_TPREL16_HA & 3)) | |
14171 | abort (); | |
0d4792f7 | 14172 | |
411e1bfb AM |
14173 | switch (r_type) |
14174 | { | |
14175 | default: | |
411e1bfb AM |
14176 | break; |
14177 | ||
ba761f19 | 14178 | case R_PPC64_LO_DS_OPT: |
95f0d0d2 | 14179 | insn = bfd_get_32 (input_bfd, contents + rel->r_offset - d_offset); |
ba761f19 AM |
14180 | if ((insn & (0x3f << 26)) != 58u << 26) |
14181 | abort (); | |
14182 | insn += (14u << 26) - (58u << 26); | |
95f0d0d2 | 14183 | bfd_put_32 (input_bfd, insn, contents + rel->r_offset - d_offset); |
ba761f19 AM |
14184 | r_type = R_PPC64_TOC16_LO; |
14185 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
14186 | break; | |
14187 | ||
411e1bfb AM |
14188 | case R_PPC64_TOC16: |
14189 | case R_PPC64_TOC16_LO: | |
14190 | case R_PPC64_TOC16_DS: | |
14191 | case R_PPC64_TOC16_LO_DS: | |
411e1bfb AM |
14192 | { |
14193 | /* Check for toc tls entries. */ | |
f961d9dd | 14194 | unsigned char *toc_tls; |
951fd09b | 14195 | int retval; |
411e1bfb | 14196 | |
3a71aa26 AM |
14197 | retval = get_tls_mask (&toc_tls, &toc_symndx, &toc_addend, |
14198 | &local_syms, rel, input_bfd); | |
951fd09b | 14199 | if (retval == 0) |
411e1bfb AM |
14200 | return FALSE; |
14201 | ||
14202 | if (toc_tls) | |
14203 | { | |
951fd09b | 14204 | tls_mask = *toc_tls; |
411e1bfb AM |
14205 | if (r_type == R_PPC64_TOC16_DS |
14206 | || r_type == R_PPC64_TOC16_LO_DS) | |
81407a69 | 14207 | { |
37da22e5 | 14208 | if ((tls_mask & TLS_TLS) != 0 |
81407a69 AM |
14209 | && (tls_mask & (TLS_DTPREL | TLS_TPREL)) == 0) |
14210 | goto toctprel; | |
14211 | } | |
411e1bfb | 14212 | else |
951fd09b AM |
14213 | { |
14214 | /* If we found a GD reloc pair, then we might be | |
14215 | doing a GD->IE transition. */ | |
14216 | if (retval == 2) | |
14217 | { | |
14218 | tls_gd = TLS_TPRELGD; | |
37da22e5 AM |
14219 | if ((tls_mask & TLS_TLS) != 0 |
14220 | && (tls_mask & TLS_GD) == 0) | |
102890f0 | 14221 | goto tls_ldgd_opt; |
951fd09b AM |
14222 | } |
14223 | else if (retval == 3) | |
14224 | { | |
37da22e5 AM |
14225 | if ((tls_mask & TLS_TLS) != 0 |
14226 | && (tls_mask & TLS_LD) == 0) | |
102890f0 | 14227 | goto tls_ldgd_opt; |
951fd09b AM |
14228 | } |
14229 | } | |
411e1bfb AM |
14230 | } |
14231 | } | |
14232 | break; | |
14233 | ||
9d6ded02 AM |
14234 | case R_PPC64_GOT_TPREL16_HI: |
14235 | case R_PPC64_GOT_TPREL16_HA: | |
37da22e5 | 14236 | if ((tls_mask & TLS_TLS) != 0 |
9d6ded02 AM |
14237 | && (tls_mask & TLS_TPREL) == 0) |
14238 | { | |
14239 | rel->r_offset -= d_offset; | |
95f0d0d2 | 14240 | bfd_put_32 (input_bfd, NOP, contents + rel->r_offset); |
9d6ded02 AM |
14241 | r_type = R_PPC64_NONE; |
14242 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
14243 | } | |
14244 | break; | |
14245 | ||
411e1bfb AM |
14246 | case R_PPC64_GOT_TPREL16_DS: |
14247 | case R_PPC64_GOT_TPREL16_LO_DS: | |
37da22e5 | 14248 | if ((tls_mask & TLS_TLS) != 0 |
951fd09b | 14249 | && (tls_mask & TLS_TPREL) == 0) |
411e1bfb | 14250 | { |
81407a69 | 14251 | toctprel: |
95f0d0d2 | 14252 | insn = bfd_get_32 (input_bfd, |
c316a17c | 14253 | contents + rel->r_offset - d_offset); |
411e1bfb AM |
14254 | insn &= 31 << 21; |
14255 | insn |= 0x3c0d0000; /* addis 0,13,0 */ | |
95f0d0d2 | 14256 | bfd_put_32 (input_bfd, insn, |
c316a17c | 14257 | contents + rel->r_offset - d_offset); |
411e1bfb | 14258 | r_type = R_PPC64_TPREL16_HA; |
0d4792f7 AM |
14259 | if (toc_symndx != 0) |
14260 | { | |
14261 | rel->r_info = ELF64_R_INFO (toc_symndx, r_type); | |
3a71aa26 | 14262 | rel->r_addend = toc_addend; |
0d4792f7 AM |
14263 | /* We changed the symbol. Start over in order to |
14264 | get h, sym, sec etc. right. */ | |
c316a17c | 14265 | goto again; |
0d4792f7 AM |
14266 | } |
14267 | else | |
14268 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
411e1bfb AM |
14269 | } |
14270 | break; | |
14271 | ||
14272 | case R_PPC64_TLS: | |
37da22e5 | 14273 | if ((tls_mask & TLS_TLS) != 0 |
951fd09b | 14274 | && (tls_mask & TLS_TPREL) == 0) |
411e1bfb | 14275 | { |
95f0d0d2 | 14276 | insn = bfd_get_32 (input_bfd, contents + rel->r_offset); |
2d0f3896 AM |
14277 | insn = _bfd_elf_ppc_at_tls_transform (insn, 13); |
14278 | if (insn == 0) | |
411e1bfb | 14279 | abort (); |
95f0d0d2 | 14280 | bfd_put_32 (input_bfd, insn, contents + rel->r_offset); |
411e1bfb | 14281 | /* Was PPC64_TLS which sits on insn boundary, now |
4fe5ca5b GM |
14282 | PPC64_TPREL16_LO which is at low-order half-word. */ |
14283 | rel->r_offset += d_offset; | |
0d4792f7 AM |
14284 | r_type = R_PPC64_TPREL16_LO; |
14285 | if (toc_symndx != 0) | |
14286 | { | |
14287 | rel->r_info = ELF64_R_INFO (toc_symndx, r_type); | |
3a71aa26 | 14288 | rel->r_addend = toc_addend; |
0d4792f7 AM |
14289 | /* We changed the symbol. Start over in order to |
14290 | get h, sym, sec etc. right. */ | |
c316a17c | 14291 | goto again; |
0d4792f7 AM |
14292 | } |
14293 | else | |
14294 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
411e1bfb AM |
14295 | } |
14296 | break; | |
14297 | ||
411e1bfb AM |
14298 | case R_PPC64_GOT_TLSGD16_HI: |
14299 | case R_PPC64_GOT_TLSGD16_HA: | |
951fd09b | 14300 | tls_gd = TLS_TPRELGD; |
37da22e5 | 14301 | if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_GD) == 0) |
951fd09b AM |
14302 | goto tls_gdld_hi; |
14303 | break; | |
14304 | ||
411e1bfb AM |
14305 | case R_PPC64_GOT_TLSLD16_HI: |
14306 | case R_PPC64_GOT_TLSLD16_HA: | |
37da22e5 | 14307 | if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_LD) == 0) |
411e1bfb | 14308 | { |
951fd09b AM |
14309 | tls_gdld_hi: |
14310 | if ((tls_mask & tls_gd) != 0) | |
14311 | r_type = (((r_type - (R_PPC64_GOT_TLSGD16 & 3)) & 3) | |
14312 | + R_PPC64_GOT_TPREL16_DS); | |
14313 | else | |
411e1bfb | 14314 | { |
4fe5ca5b | 14315 | rel->r_offset -= d_offset; |
95f0d0d2 | 14316 | bfd_put_32 (input_bfd, NOP, contents + rel->r_offset); |
951fd09b | 14317 | r_type = R_PPC64_NONE; |
411e1bfb | 14318 | } |
951fd09b | 14319 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); |
411e1bfb AM |
14320 | } |
14321 | break; | |
14322 | ||
951fd09b AM |
14323 | case R_PPC64_GOT_TLSGD16: |
14324 | case R_PPC64_GOT_TLSGD16_LO: | |
14325 | tls_gd = TLS_TPRELGD; | |
37da22e5 | 14326 | if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_GD) == 0) |
102890f0 | 14327 | goto tls_ldgd_opt; |
951fd09b | 14328 | break; |
411e1bfb | 14329 | |
951fd09b AM |
14330 | case R_PPC64_GOT_TLSLD16: |
14331 | case R_PPC64_GOT_TLSLD16_LO: | |
37da22e5 | 14332 | if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_LD) == 0) |
951fd09b | 14333 | { |
b9f04fe0 | 14334 | unsigned int insn1, insn2; |
102890f0 AM |
14335 | bfd_vma offset; |
14336 | ||
14337 | tls_ldgd_opt: | |
727fc41e AM |
14338 | offset = (bfd_vma) -1; |
14339 | /* If not using the newer R_PPC64_TLSGD/LD to mark | |
14340 | __tls_get_addr calls, we must trust that the call | |
14341 | stays with its arg setup insns, ie. that the next | |
14342 | reloc is the __tls_get_addr call associated with | |
14343 | the current reloc. Edit both insns. */ | |
14344 | if (input_section->has_tls_get_addr_call | |
14345 | && rel + 1 < relend | |
14346 | && branch_reloc_hash_match (input_bfd, rel + 1, | |
14347 | htab->tls_get_addr, | |
14348 | htab->tls_get_addr_fd)) | |
14349 | offset = rel[1].r_offset; | |
b86ac8e3 AM |
14350 | /* We read the low GOT_TLS (or TOC16) insn because we |
14351 | need to keep the destination reg. It may be | |
14352 | something other than the usual r3, and moved to r3 | |
14353 | before the call by intervening code. */ | |
95f0d0d2 | 14354 | insn1 = bfd_get_32 (input_bfd, |
b86ac8e3 | 14355 | contents + rel->r_offset - d_offset); |
102890f0 | 14356 | if ((tls_mask & tls_gd) != 0) |
411e1bfb | 14357 | { |
102890f0 | 14358 | /* IE */ |
b86ac8e3 | 14359 | insn1 &= (0x1f << 21) | (0x1f << 16); |
102890f0 AM |
14360 | insn1 |= 58 << 26; /* ld */ |
14361 | insn2 = 0x7c636a14; /* add 3,3,13 */ | |
727fc41e | 14362 | if (offset != (bfd_vma) -1) |
f58d5a2d | 14363 | rel[1].r_info = ELF64_R_INFO (STN_UNDEF, R_PPC64_NONE); |
102890f0 AM |
14364 | if ((tls_mask & TLS_EXPLICIT) == 0) |
14365 | r_type = (((r_type - (R_PPC64_GOT_TLSGD16 & 3)) & 3) | |
14366 | + R_PPC64_GOT_TPREL16_DS); | |
411e1bfb | 14367 | else |
102890f0 AM |
14368 | r_type += R_PPC64_TOC16_DS - R_PPC64_TOC16; |
14369 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
14370 | } | |
14371 | else | |
14372 | { | |
14373 | /* LE */ | |
b86ac8e3 AM |
14374 | insn1 &= 0x1f << 21; |
14375 | insn1 |= 0x3c0d0000; /* addis r,13,0 */ | |
102890f0 AM |
14376 | insn2 = 0x38630000; /* addi 3,3,0 */ |
14377 | if (tls_gd == 0) | |
951fd09b | 14378 | { |
102890f0 | 14379 | /* Was an LD reloc. */ |
1d483afe AM |
14380 | if (toc_symndx) |
14381 | sec = local_sections[toc_symndx]; | |
14382 | for (r_symndx = 0; | |
14383 | r_symndx < symtab_hdr->sh_info; | |
14384 | r_symndx++) | |
14385 | if (local_sections[r_symndx] == sec) | |
14386 | break; | |
14387 | if (r_symndx >= symtab_hdr->sh_info) | |
cf35638d | 14388 | r_symndx = STN_UNDEF; |
102890f0 | 14389 | rel->r_addend = htab->elf.tls_sec->vma + DTP_OFFSET; |
cf35638d | 14390 | if (r_symndx != STN_UNDEF) |
1d483afe AM |
14391 | rel->r_addend -= (local_syms[r_symndx].st_value |
14392 | + sec->output_offset | |
14393 | + sec->output_section->vma); | |
951fd09b | 14394 | } |
102890f0 | 14395 | else if (toc_symndx != 0) |
3a71aa26 AM |
14396 | { |
14397 | r_symndx = toc_symndx; | |
14398 | rel->r_addend = toc_addend; | |
14399 | } | |
102890f0 AM |
14400 | r_type = R_PPC64_TPREL16_HA; |
14401 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
727fc41e AM |
14402 | if (offset != (bfd_vma) -1) |
14403 | { | |
14404 | rel[1].r_info = ELF64_R_INFO (r_symndx, | |
14405 | R_PPC64_TPREL16_LO); | |
14406 | rel[1].r_offset = offset + d_offset; | |
14407 | rel[1].r_addend = rel->r_addend; | |
14408 | } | |
102890f0 | 14409 | } |
95f0d0d2 | 14410 | bfd_put_32 (input_bfd, insn1, |
3a71aa26 | 14411 | contents + rel->r_offset - d_offset); |
727fc41e | 14412 | if (offset != (bfd_vma) -1) |
b9f04fe0 | 14413 | bfd_put_32 (input_bfd, insn2, contents + offset); |
727fc41e AM |
14414 | if ((tls_mask & tls_gd) == 0 |
14415 | && (tls_gd == 0 || toc_symndx != 0)) | |
14416 | { | |
14417 | /* We changed the symbol. Start over in order | |
14418 | to get h, sym, sec etc. right. */ | |
c316a17c | 14419 | goto again; |
727fc41e AM |
14420 | } |
14421 | } | |
14422 | break; | |
14423 | ||
14424 | case R_PPC64_TLSGD: | |
37da22e5 | 14425 | if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_GD) == 0 |
675e2809 | 14426 | && rel + 1 < relend) |
727fc41e | 14427 | { |
b9f04fe0 | 14428 | unsigned int insn2; |
727fc41e AM |
14429 | bfd_vma offset = rel->r_offset; |
14430 | ||
23cedd1d AM |
14431 | if (is_plt_seq_reloc (ELF64_R_TYPE (rel[1].r_info))) |
14432 | { | |
14433 | bfd_put_32 (output_bfd, NOP, contents + offset); | |
14434 | rel[1].r_info = ELF64_R_INFO (STN_UNDEF, R_PPC64_NONE); | |
14435 | break; | |
14436 | } | |
14437 | ||
14438 | if (ELF64_R_TYPE (rel[1].r_info) == R_PPC64_PLTCALL) | |
14439 | bfd_put_32 (output_bfd, NOP, contents + offset + 4); | |
14440 | ||
727fc41e AM |
14441 | if ((tls_mask & TLS_TPRELGD) != 0) |
14442 | { | |
14443 | /* IE */ | |
14444 | r_type = R_PPC64_NONE; | |
14445 | insn2 = 0x7c636a14; /* add 3,3,13 */ | |
14446 | } | |
14447 | else | |
14448 | { | |
14449 | /* LE */ | |
14450 | if (toc_symndx != 0) | |
14451 | { | |
14452 | r_symndx = toc_symndx; | |
14453 | rel->r_addend = toc_addend; | |
14454 | } | |
14455 | r_type = R_PPC64_TPREL16_LO; | |
14456 | rel->r_offset = offset + d_offset; | |
14457 | insn2 = 0x38630000; /* addi 3,3,0 */ | |
14458 | } | |
14459 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
14460 | /* Zap the reloc on the _tls_get_addr call too. */ | |
14461 | BFD_ASSERT (offset == rel[1].r_offset); | |
f58d5a2d | 14462 | rel[1].r_info = ELF64_R_INFO (STN_UNDEF, R_PPC64_NONE); |
95f0d0d2 | 14463 | bfd_put_32 (input_bfd, insn2, contents + offset); |
727fc41e | 14464 | if ((tls_mask & TLS_TPRELGD) == 0 && toc_symndx != 0) |
c316a17c | 14465 | goto again; |
411e1bfb | 14466 | } |
411e1bfb AM |
14467 | break; |
14468 | ||
727fc41e | 14469 | case R_PPC64_TLSLD: |
37da22e5 | 14470 | if ((tls_mask & TLS_TLS) != 0 && (tls_mask & TLS_LD) == 0 |
675e2809 | 14471 | && rel + 1 < relend) |
727fc41e | 14472 | { |
b9f04fe0 | 14473 | unsigned int insn2; |
727fc41e AM |
14474 | bfd_vma offset = rel->r_offset; |
14475 | ||
23cedd1d AM |
14476 | if (is_plt_seq_reloc (ELF64_R_TYPE (rel[1].r_info))) |
14477 | { | |
14478 | bfd_put_32 (output_bfd, NOP, contents + offset); | |
14479 | rel[1].r_info = ELF64_R_INFO (STN_UNDEF, R_PPC64_NONE); | |
14480 | break; | |
14481 | } | |
14482 | ||
14483 | if (ELF64_R_TYPE (rel[1].r_info) == R_PPC64_PLTCALL) | |
14484 | bfd_put_32 (output_bfd, NOP, contents + offset + 4); | |
14485 | ||
727fc41e AM |
14486 | if (toc_symndx) |
14487 | sec = local_sections[toc_symndx]; | |
14488 | for (r_symndx = 0; | |
14489 | r_symndx < symtab_hdr->sh_info; | |
14490 | r_symndx++) | |
14491 | if (local_sections[r_symndx] == sec) | |
14492 | break; | |
14493 | if (r_symndx >= symtab_hdr->sh_info) | |
cf35638d | 14494 | r_symndx = STN_UNDEF; |
727fc41e | 14495 | rel->r_addend = htab->elf.tls_sec->vma + DTP_OFFSET; |
cf35638d | 14496 | if (r_symndx != STN_UNDEF) |
727fc41e AM |
14497 | rel->r_addend -= (local_syms[r_symndx].st_value |
14498 | + sec->output_offset | |
14499 | + sec->output_section->vma); | |
14500 | ||
14501 | r_type = R_PPC64_TPREL16_LO; | |
14502 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
14503 | rel->r_offset = offset + d_offset; | |
14504 | /* Zap the reloc on the _tls_get_addr call too. */ | |
14505 | BFD_ASSERT (offset == rel[1].r_offset); | |
f58d5a2d | 14506 | rel[1].r_info = ELF64_R_INFO (STN_UNDEF, R_PPC64_NONE); |
727fc41e | 14507 | insn2 = 0x38630000; /* addi 3,3,0 */ |
95f0d0d2 | 14508 | bfd_put_32 (input_bfd, insn2, contents + offset); |
c316a17c | 14509 | goto again; |
727fc41e AM |
14510 | } |
14511 | break; | |
14512 | ||
411e1bfb | 14513 | case R_PPC64_DTPMOD64: |
951fd09b AM |
14514 | if (rel + 1 < relend |
14515 | && rel[1].r_info == ELF64_R_INFO (r_symndx, R_PPC64_DTPREL64) | |
14516 | && rel[1].r_offset == rel->r_offset + 8) | |
411e1bfb | 14517 | { |
951fd09b AM |
14518 | if ((tls_mask & TLS_GD) == 0) |
14519 | { | |
14520 | rel[1].r_info = ELF64_R_INFO (r_symndx, R_PPC64_NONE); | |
14521 | if ((tls_mask & TLS_TPRELGD) != 0) | |
14522 | r_type = R_PPC64_TPREL64; | |
14523 | else | |
14524 | { | |
4ce794b7 | 14525 | bfd_put_64 (output_bfd, 1, contents + rel->r_offset); |
951fd09b AM |
14526 | r_type = R_PPC64_NONE; |
14527 | } | |
14528 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
14529 | } | |
14530 | } | |
14531 | else | |
14532 | { | |
14533 | if ((tls_mask & TLS_LD) == 0) | |
411e1bfb | 14534 | { |
4ce794b7 | 14535 | bfd_put_64 (output_bfd, 1, contents + rel->r_offset); |
411e1bfb | 14536 | r_type = R_PPC64_NONE; |
951fd09b | 14537 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); |
411e1bfb | 14538 | } |
411e1bfb AM |
14539 | } |
14540 | break; | |
14541 | ||
14542 | case R_PPC64_TPREL64: | |
951fd09b | 14543 | if ((tls_mask & TLS_TPREL) == 0) |
411e1bfb AM |
14544 | { |
14545 | r_type = R_PPC64_NONE; | |
14546 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
14547 | } | |
14548 | break; | |
52a82034 | 14549 | |
006589cf AM |
14550 | case R_PPC64_ENTRY: |
14551 | relocation = TOCstart + htab->sec_info[input_section->id].toc_off; | |
14552 | if (!bfd_link_pic (info) | |
14553 | && !info->traditional_format | |
14554 | && relocation + 0x80008000 <= 0xffffffff) | |
14555 | { | |
14556 | unsigned int insn1, insn2; | |
14557 | ||
14558 | insn1 = bfd_get_32 (input_bfd, contents + rel->r_offset); | |
14559 | insn2 = bfd_get_32 (input_bfd, contents + rel->r_offset + 4); | |
14560 | if ((insn1 & ~0xfffc) == LD_R2_0R12 | |
14561 | && insn2 == ADD_R2_R2_R12) | |
14562 | { | |
95f0d0d2 | 14563 | bfd_put_32 (input_bfd, |
006589cf AM |
14564 | LIS_R2 + PPC_HA (relocation), |
14565 | contents + rel->r_offset); | |
95f0d0d2 | 14566 | bfd_put_32 (input_bfd, |
006589cf AM |
14567 | ADDI_R2_R2 + PPC_LO (relocation), |
14568 | contents + rel->r_offset + 4); | |
14569 | } | |
14570 | } | |
14571 | else | |
14572 | { | |
14573 | relocation -= (rel->r_offset | |
14574 | + input_section->output_offset | |
14575 | + input_section->output_section->vma); | |
14576 | if (relocation + 0x80008000 <= 0xffffffff) | |
14577 | { | |
14578 | unsigned int insn1, insn2; | |
14579 | ||
14580 | insn1 = bfd_get_32 (input_bfd, contents + rel->r_offset); | |
14581 | insn2 = bfd_get_32 (input_bfd, contents + rel->r_offset + 4); | |
14582 | if ((insn1 & ~0xfffc) == LD_R2_0R12 | |
14583 | && insn2 == ADD_R2_R2_R12) | |
14584 | { | |
95f0d0d2 | 14585 | bfd_put_32 (input_bfd, |
006589cf AM |
14586 | ADDIS_R2_R12 + PPC_HA (relocation), |
14587 | contents + rel->r_offset); | |
95f0d0d2 | 14588 | bfd_put_32 (input_bfd, |
006589cf AM |
14589 | ADDI_R2_R2 + PPC_LO (relocation), |
14590 | contents + rel->r_offset + 4); | |
14591 | } | |
14592 | } | |
14593 | } | |
14594 | break; | |
14595 | ||
52a82034 AM |
14596 | case R_PPC64_REL16_HA: |
14597 | /* If we are generating a non-PIC executable, edit | |
14598 | . 0: addis 2,12,.TOC.-0b@ha | |
14599 | . addi 2,2,.TOC.-0b@l | |
14600 | used by ELFv2 global entry points to set up r2, to | |
14601 | . lis 2,.TOC.@ha | |
14602 | . addi 2,2,.TOC.@l | |
14603 | if .TOC. is in range. */ | |
0e1862bb | 14604 | if (!bfd_link_pic (info) |
810d4e75 | 14605 | && !info->traditional_format |
006589cf | 14606 | && !htab->opd_abi |
4f038ee5 | 14607 | && rel->r_addend == d_offset |
52a82034 AM |
14608 | && h != NULL && &h->elf == htab->elf.hgot |
14609 | && rel + 1 < relend | |
14610 | && rel[1].r_info == ELF64_R_INFO (r_symndx, R_PPC64_REL16_LO) | |
14611 | && rel[1].r_offset == rel->r_offset + 4 | |
14612 | && rel[1].r_addend == rel->r_addend + 4 | |
14613 | && relocation + 0x80008000 <= 0xffffffff) | |
14614 | { | |
14615 | unsigned int insn1, insn2; | |
14616 | bfd_vma offset = rel->r_offset - d_offset; | |
95f0d0d2 AM |
14617 | insn1 = bfd_get_32 (input_bfd, contents + offset); |
14618 | insn2 = bfd_get_32 (input_bfd, contents + offset + 4); | |
006589cf AM |
14619 | if ((insn1 & 0xffff0000) == ADDIS_R2_R12 |
14620 | && (insn2 & 0xffff0000) == ADDI_R2_R2) | |
52a82034 AM |
14621 | { |
14622 | r_type = R_PPC64_ADDR16_HA; | |
14623 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
14624 | rel->r_addend -= d_offset; | |
14625 | rel[1].r_info = ELF64_R_INFO (r_symndx, R_PPC64_ADDR16_LO); | |
14626 | rel[1].r_addend -= d_offset + 4; | |
95f0d0d2 | 14627 | bfd_put_32 (input_bfd, LIS_R2, contents + offset); |
52a82034 AM |
14628 | } |
14629 | } | |
14630 | break; | |
411e1bfb AM |
14631 | } |
14632 | ||
14633 | /* Handle other relocations that tweak non-addend part of insn. */ | |
86c76c7b | 14634 | insn = 0; |
b25116a9 AM |
14635 | max_br_offset = 1 << 25; |
14636 | addend = rel->r_addend; | |
bc30df16 | 14637 | reloc_dest = DEST_NORMAL; |
65f38f15 | 14638 | switch (r_type) |
5bd4f169 AM |
14639 | { |
14640 | default: | |
65f38f15 | 14641 | break; |
5bd4f169 | 14642 | |
3b421ab3 AM |
14643 | case R_PPC64_TOCSAVE: |
14644 | if (relocation + addend == (rel->r_offset | |
14645 | + input_section->output_offset | |
14646 | + input_section->output_section->vma) | |
14647 | && tocsave_find (htab, NO_INSERT, | |
14648 | &local_syms, rel, input_bfd)) | |
14649 | { | |
14650 | insn = bfd_get_32 (input_bfd, contents + rel->r_offset); | |
14651 | if (insn == NOP | |
14652 | || insn == CROR_151515 || insn == CROR_313131) | |
a078d95a AM |
14653 | bfd_put_32 (input_bfd, |
14654 | STD_R2_0R1 + STK_TOC (htab), | |
3b421ab3 AM |
14655 | contents + rel->r_offset); |
14656 | } | |
14657 | break; | |
14658 | ||
65f38f15 AM |
14659 | /* Branch taken prediction relocations. */ |
14660 | case R_PPC64_ADDR14_BRTAKEN: | |
14661 | case R_PPC64_REL14_BRTAKEN: | |
cedb70c5 | 14662 | insn = 0x01 << 21; /* 'y' or 't' bit, lowest bit of BO field. */ |
1a0670f3 | 14663 | /* Fall through. */ |
65f38f15 | 14664 | |
86c76c7b | 14665 | /* Branch not taken prediction relocations. */ |
65f38f15 AM |
14666 | case R_PPC64_ADDR14_BRNTAKEN: |
14667 | case R_PPC64_REL14_BRNTAKEN: | |
95f0d0d2 | 14668 | insn |= bfd_get_32 (input_bfd, |
411e1bfb | 14669 | contents + rel->r_offset) & ~(0x01 << 21); |
1a0670f3 | 14670 | /* Fall through. */ |
86c76c7b | 14671 | |
b25116a9 AM |
14672 | case R_PPC64_REL14: |
14673 | max_br_offset = 1 << 15; | |
1a0670f3 | 14674 | /* Fall through. */ |
5bd4f169 | 14675 | |
65f38f15 | 14676 | case R_PPC64_REL24: |
23cedd1d | 14677 | case R_PPC64_PLTCALL: |
ad8e1ba5 AM |
14678 | /* Calls to functions with a different TOC, such as calls to |
14679 | shared objects, need to alter the TOC pointer. This is | |
14680 | done using a linkage stub. A REL24 branching to these | |
14681 | linkage stubs needs to be followed by a nop, as the nop | |
14682 | will be replaced with an instruction to restore the TOC | |
14683 | base pointer. */ | |
8387904d | 14684 | fdh = h; |
b31867b6 AM |
14685 | if (h != NULL |
14686 | && h->oh != NULL | |
14687 | && h->oh->is_func_descriptor) | |
14688 | fdh = ppc_follow_link (h->oh); | |
31c76678 DK |
14689 | stub_entry = ppc_get_stub_entry (input_section, sec, fdh, &orig_rel, |
14690 | htab); | |
23cedd1d AM |
14691 | if (r_type == R_PPC64_PLTCALL |
14692 | && stub_entry != NULL | |
14693 | && (stub_entry->stub_type == ppc_stub_plt_call | |
14694 | || stub_entry->stub_type == ppc_stub_plt_call_r2save)) | |
14695 | stub_entry = NULL; | |
14696 | ||
6abec6bc | 14697 | if (stub_entry != NULL |
ad8e1ba5 | 14698 | && (stub_entry->stub_type == ppc_stub_plt_call |
794e51c0 | 14699 | || stub_entry->stub_type == ppc_stub_plt_call_r2save |
ad8e1ba5 AM |
14700 | || stub_entry->stub_type == ppc_stub_plt_branch_r2off |
14701 | || stub_entry->stub_type == ppc_stub_long_branch_r2off)) | |
41bd81ab | 14702 | { |
b25116a9 | 14703 | bfd_boolean can_plt_call = FALSE; |
721956f4 | 14704 | |
6e1816be AM |
14705 | if (stub_entry->stub_type == ppc_stub_plt_call |
14706 | && !htab->opd_abi | |
14707 | && htab->params->plt_localentry0 != 0 | |
14708 | && is_elfv2_localentry0 (&h->elf)) | |
14709 | { | |
14710 | /* The function doesn't use or change r2. */ | |
14711 | can_plt_call = TRUE; | |
14712 | } | |
14713 | ||
f378ab09 | 14714 | /* All of these stubs may modify r2, so there must be a |
ba8ca3e7 AM |
14715 | branch and link followed by a nop. The nop is |
14716 | replaced by an insn to restore r2. */ | |
6e1816be | 14717 | else if (rel->r_offset + 8 <= input_section->size) |
41bd81ab | 14718 | { |
ba8ca3e7 AM |
14719 | unsigned long br; |
14720 | ||
14721 | br = bfd_get_32 (input_bfd, | |
14722 | contents + rel->r_offset); | |
14723 | if ((br & 1) != 0) | |
41bd81ab | 14724 | { |
ba8ca3e7 AM |
14725 | unsigned long nop; |
14726 | ||
14727 | nop = bfd_get_32 (input_bfd, | |
14728 | contents + rel->r_offset + 4); | |
23cedd1d AM |
14729 | if (nop == LD_R2_0R1 + STK_TOC (htab)) |
14730 | can_plt_call = TRUE; | |
14731 | else if (nop == NOP | |
14732 | || nop == CROR_151515 | |
14733 | || nop == CROR_313131) | |
a7f2871e | 14734 | { |
ba8ca3e7 AM |
14735 | if (h != NULL |
14736 | && (h == htab->tls_get_addr_fd | |
14737 | || h == htab->tls_get_addr) | |
7c9cf415 | 14738 | && htab->params->tls_get_addr_opt) |
ba8ca3e7 AM |
14739 | { |
14740 | /* Special stub used, leave nop alone. */ | |
14741 | } | |
14742 | else | |
a078d95a AM |
14743 | bfd_put_32 (input_bfd, |
14744 | LD_R2_0R1 + STK_TOC (htab), | |
ba8ca3e7 AM |
14745 | contents + rel->r_offset + 4); |
14746 | can_plt_call = TRUE; | |
a7f2871e | 14747 | } |
41bd81ab | 14748 | } |
5bd4f169 | 14749 | } |
721956f4 | 14750 | |
ba8ca3e7 | 14751 | if (!can_plt_call && h != NULL) |
721956f4 | 14752 | { |
ba8ca3e7 AM |
14753 | const char *name = h->elf.root.root.string; |
14754 | ||
14755 | if (*name == '.') | |
14756 | ++name; | |
14757 | ||
14758 | if (strncmp (name, "__libc_start_main", 17) == 0 | |
14759 | && (name[17] == 0 || name[17] == '@')) | |
6ab189d5 | 14760 | { |
ba8ca3e7 AM |
14761 | /* Allow crt1 branch to go via a toc adjusting |
14762 | stub. Other calls that never return could do | |
14763 | the same, if we could detect such. */ | |
b25116a9 | 14764 | can_plt_call = TRUE; |
6ab189d5 | 14765 | } |
ba8ca3e7 AM |
14766 | } |
14767 | ||
14768 | if (!can_plt_call) | |
14769 | { | |
14770 | /* g++ as of 20130507 emits self-calls without a | |
14771 | following nop. This is arguably wrong since we | |
14772 | have conflicting information. On the one hand a | |
14773 | global symbol and on the other a local call | |
14774 | sequence, but don't error for this special case. | |
14775 | It isn't possible to cheaply verify we have | |
14776 | exactly such a call. Allow all calls to the same | |
14777 | section. */ | |
14778 | asection *code_sec = sec; | |
14779 | ||
14780 | if (get_opd_info (sec) != NULL) | |
ad8e1ba5 | 14781 | { |
ba8ca3e7 AM |
14782 | bfd_vma off = (relocation + addend |
14783 | - sec->output_section->vma | |
14784 | - sec->output_offset); | |
bc30df16 | 14785 | |
ba8ca3e7 | 14786 | opd_entry_value (sec, off, &code_sec, NULL, FALSE); |
ad8e1ba5 | 14787 | } |
ba8ca3e7 AM |
14788 | if (code_sec == input_section) |
14789 | can_plt_call = TRUE; | |
14790 | } | |
14791 | ||
14792 | if (!can_plt_call) | |
14793 | { | |
4805fc55 AM |
14794 | if (stub_entry->stub_type == ppc_stub_plt_call |
14795 | || stub_entry->stub_type == ppc_stub_plt_call_r2save) | |
14796 | info->callbacks->einfo | |
695344c0 | 14797 | /* xgettext:c-format */ |
c1c8c1ef | 14798 | (_("%H: call to `%pT' lacks nop, can't restore toc; " |
4805fc55 AM |
14799 | "recompile with -fPIC\n"), |
14800 | input_bfd, input_section, rel->r_offset, sym_name); | |
14801 | else | |
14802 | info->callbacks->einfo | |
695344c0 | 14803 | /* xgettext:c-format */ |
c1c8c1ef | 14804 | (_("%H: call to `%pT' lacks nop, can't restore toc; " |
4805fc55 AM |
14805 | "(-mcmodel=small toc adjust stub)\n"), |
14806 | input_bfd, input_section, rel->r_offset, sym_name); | |
ba8ca3e7 AM |
14807 | |
14808 | bfd_set_error (bfd_error_bad_value); | |
14809 | ret = FALSE; | |
721956f4 AM |
14810 | } |
14811 | ||
b25116a9 | 14812 | if (can_plt_call |
794e51c0 AM |
14813 | && (stub_entry->stub_type == ppc_stub_plt_call |
14814 | || stub_entry->stub_type == ppc_stub_plt_call_r2save)) | |
b25116a9 AM |
14815 | unresolved_reloc = FALSE; |
14816 | } | |
14817 | ||
6abec6bc AM |
14818 | if ((stub_entry == NULL |
14819 | || stub_entry->stub_type == ppc_stub_long_branch | |
14820 | || stub_entry->stub_type == ppc_stub_plt_branch) | |
8387904d AM |
14821 | && get_opd_info (sec) != NULL) |
14822 | { | |
14823 | /* The branch destination is the value of the opd entry. */ | |
4cc603a5 AM |
14824 | bfd_vma off = (relocation + addend |
14825 | - sec->output_section->vma | |
14826 | - sec->output_offset); | |
aef36ac1 | 14827 | bfd_vma dest = opd_entry_value (sec, off, NULL, NULL, FALSE); |
8387904d AM |
14828 | if (dest != (bfd_vma) -1) |
14829 | { | |
14830 | relocation = dest; | |
14831 | addend = 0; | |
bc30df16 | 14832 | reloc_dest = DEST_OPD; |
8387904d AM |
14833 | } |
14834 | } | |
14835 | ||
b25116a9 AM |
14836 | /* If the branch is out of reach we ought to have a long |
14837 | branch stub. */ | |
14838 | from = (rel->r_offset | |
14839 | + input_section->output_offset | |
14840 | + input_section->output_section->vma); | |
14841 | ||
6911b7dc AM |
14842 | relocation += PPC64_LOCAL_ENTRY_OFFSET (fdh |
14843 | ? fdh->elf.other | |
14844 | : sym->st_other); | |
14845 | ||
6abec6bc AM |
14846 | if (stub_entry != NULL |
14847 | && (stub_entry->stub_type == ppc_stub_long_branch | |
14848 | || stub_entry->stub_type == ppc_stub_plt_branch) | |
14849 | && (r_type == R_PPC64_ADDR14_BRTAKEN | |
14850 | || r_type == R_PPC64_ADDR14_BRNTAKEN | |
14851 | || (relocation + addend - from + max_br_offset | |
14852 | < 2 * max_br_offset))) | |
14853 | /* Don't use the stub if this branch is in range. */ | |
14854 | stub_entry = NULL; | |
b25116a9 AM |
14855 | |
14856 | if (stub_entry != NULL) | |
14857 | { | |
14858 | /* Munge up the value and addend so that we call the stub | |
14859 | rather than the procedure directly. */ | |
a4b6fadd AM |
14860 | asection *stub_sec = stub_entry->group->stub_sec; |
14861 | ||
14862 | if (stub_entry->stub_type == ppc_stub_save_res) | |
14863 | relocation += (stub_sec->output_offset | |
14864 | + stub_sec->output_section->vma | |
14865 | + stub_sec->size - htab->sfpr->size | |
14866 | - htab->sfpr->output_offset | |
14867 | - htab->sfpr->output_section->vma); | |
14868 | else | |
14869 | relocation = (stub_entry->stub_offset | |
14870 | + stub_sec->output_offset | |
14871 | + stub_sec->output_section->vma); | |
b25116a9 | 14872 | addend = 0; |
bc30df16 | 14873 | reloc_dest = DEST_STUB; |
3b421ab3 | 14874 | |
954b63d4 | 14875 | if ((stub_entry->stub_type == ppc_stub_plt_call |
794e51c0 AM |
14876 | || stub_entry->stub_type == ppc_stub_plt_call_r2save) |
14877 | && (ALWAYS_EMIT_R2SAVE | |
14878 | || stub_entry->stub_type == ppc_stub_plt_call_r2save) | |
3b421ab3 AM |
14879 | && rel + 1 < relend |
14880 | && rel[1].r_offset == rel->r_offset + 4 | |
14881 | && ELF64_R_TYPE (rel[1].r_info) == R_PPC64_TOCSAVE) | |
14882 | relocation += 4; | |
b25116a9 AM |
14883 | } |
14884 | ||
14885 | if (insn != 0) | |
14886 | { | |
794e51c0 | 14887 | if (is_isa_v2) |
721956f4 | 14888 | { |
b25116a9 AM |
14889 | /* Set 'a' bit. This is 0b00010 in BO field for branch |
14890 | on CR(BI) insns (BO == 001at or 011at), and 0b01000 | |
14891 | for branch on CTR insns (BO == 1a00t or 1a01t). */ | |
14892 | if ((insn & (0x14 << 21)) == (0x04 << 21)) | |
14893 | insn |= 0x02 << 21; | |
14894 | else if ((insn & (0x14 << 21)) == (0x10 << 21)) | |
14895 | insn |= 0x08 << 21; | |
14896 | else | |
14897 | break; | |
14898 | } | |
14899 | else | |
14900 | { | |
14901 | /* Invert 'y' bit if not the default. */ | |
4cc603a5 | 14902 | if ((bfd_signed_vma) (relocation + addend - from) < 0) |
b25116a9 | 14903 | insn ^= 0x01 << 21; |
721956f4 | 14904 | } |
b25116a9 | 14905 | |
95f0d0d2 | 14906 | bfd_put_32 (input_bfd, insn, contents + rel->r_offset); |
5bd4f169 | 14907 | } |
e86ce104 | 14908 | |
06da1e8e AM |
14909 | /* NOP out calls to undefined weak functions. |
14910 | We can thus call a weak function without first | |
14911 | checking whether the function is defined. */ | |
b25116a9 | 14912 | else if (h != NULL |
039b3fef | 14913 | && h->elf.root.type == bfd_link_hash_undefweak |
766bc656 | 14914 | && h->elf.dynindx == -1 |
b25116a9 AM |
14915 | && r_type == R_PPC64_REL24 |
14916 | && relocation == 0 | |
4cc603a5 | 14917 | && addend == 0) |
e86ce104 | 14918 | { |
95f0d0d2 | 14919 | bfd_put_32 (input_bfd, NOP, contents + rel->r_offset); |
c316a17c | 14920 | goto copy_reloc; |
e86ce104 | 14921 | } |
65f38f15 AM |
14922 | break; |
14923 | } | |
5bd4f169 | 14924 | |
65f38f15 | 14925 | /* Set `addend'. */ |
411e1bfb | 14926 | tls_type = 0; |
23cedd1d | 14927 | save_unresolved_reloc = unresolved_reloc; |
65f38f15 AM |
14928 | switch (r_type) |
14929 | { | |
14930 | default: | |
cf97bcb0 AM |
14931 | /* xgettext:c-format */ |
14932 | _bfd_error_handler (_("%pB: %s unsupported"), | |
14933 | input_bfd, ppc64_elf_howto_table[r_type]->name); | |
5bd4f169 | 14934 | |
65f38f15 | 14935 | bfd_set_error (bfd_error_bad_value); |
b34976b6 | 14936 | ret = FALSE; |
c316a17c | 14937 | goto copy_reloc; |
5bd4f169 | 14938 | |
65f38f15 | 14939 | case R_PPC64_NONE: |
411e1bfb | 14940 | case R_PPC64_TLS: |
727fc41e AM |
14941 | case R_PPC64_TLSGD: |
14942 | case R_PPC64_TLSLD: | |
3b421ab3 | 14943 | case R_PPC64_TOCSAVE: |
04c9666a AM |
14944 | case R_PPC64_GNU_VTINHERIT: |
14945 | case R_PPC64_GNU_VTENTRY: | |
006589cf | 14946 | case R_PPC64_ENTRY: |
c316a17c | 14947 | goto copy_reloc; |
5bd4f169 AM |
14948 | |
14949 | /* GOT16 relocations. Like an ADDR16 using the symbol's | |
14950 | address in the GOT as relocation value instead of the | |
411e1bfb | 14951 | symbol's value itself. Also, create a GOT entry for the |
5bd4f169 | 14952 | symbol and put the symbol value there. */ |
411e1bfb AM |
14953 | case R_PPC64_GOT_TLSGD16: |
14954 | case R_PPC64_GOT_TLSGD16_LO: | |
14955 | case R_PPC64_GOT_TLSGD16_HI: | |
14956 | case R_PPC64_GOT_TLSGD16_HA: | |
951fd09b | 14957 | tls_type = TLS_TLS | TLS_GD; |
411e1bfb AM |
14958 | goto dogot; |
14959 | ||
14960 | case R_PPC64_GOT_TLSLD16: | |
14961 | case R_PPC64_GOT_TLSLD16_LO: | |
14962 | case R_PPC64_GOT_TLSLD16_HI: | |
14963 | case R_PPC64_GOT_TLSLD16_HA: | |
951fd09b | 14964 | tls_type = TLS_TLS | TLS_LD; |
411e1bfb AM |
14965 | goto dogot; |
14966 | ||
14967 | case R_PPC64_GOT_TPREL16_DS: | |
14968 | case R_PPC64_GOT_TPREL16_LO_DS: | |
14969 | case R_PPC64_GOT_TPREL16_HI: | |
14970 | case R_PPC64_GOT_TPREL16_HA: | |
14971 | tls_type = TLS_TLS | TLS_TPREL; | |
14972 | goto dogot; | |
14973 | ||
14974 | case R_PPC64_GOT_DTPREL16_DS: | |
14975 | case R_PPC64_GOT_DTPREL16_LO_DS: | |
14976 | case R_PPC64_GOT_DTPREL16_HI: | |
14977 | case R_PPC64_GOT_DTPREL16_HA: | |
14978 | tls_type = TLS_TLS | TLS_DTPREL; | |
14979 | goto dogot; | |
14980 | ||
65f38f15 AM |
14981 | case R_PPC64_GOT16: |
14982 | case R_PPC64_GOT16_LO: | |
14983 | case R_PPC64_GOT16_HI: | |
14984 | case R_PPC64_GOT16_HA: | |
14985 | case R_PPC64_GOT16_DS: | |
14986 | case R_PPC64_GOT16_LO_DS: | |
411e1bfb | 14987 | dogot: |
5bd4f169 AM |
14988 | { |
14989 | /* Relocation is to the entry for this symbol in the global | |
14990 | offset table. */ | |
e717da7e | 14991 | asection *got; |
d881513a | 14992 | bfd_vma *offp; |
5bd4f169 | 14993 | bfd_vma off; |
d881513a | 14994 | unsigned long indx = 0; |
927be08e | 14995 | struct got_entry *ent; |
65f38f15 | 14996 | |
d881513a AM |
14997 | if (tls_type == (TLS_TLS | TLS_LD) |
14998 | && (h == NULL | |
f5385ebf | 14999 | || !h->elf.def_dynamic)) |
927be08e | 15000 | ent = ppc64_tlsld_got (input_bfd); |
411e1bfb | 15001 | else |
5bd4f169 | 15002 | { |
d881513a AM |
15003 | if (h != NULL) |
15004 | { | |
f0158f44 AM |
15005 | if (!htab->elf.dynamic_sections_created |
15006 | || h->elf.dynindx == -1 | |
15007 | || SYMBOL_REFERENCES_LOCAL (info, &h->elf) | |
21d68fcd | 15008 | || UNDEFWEAK_NO_DYNAMIC_RELOC (info, &h->elf)) |
d881513a AM |
15009 | /* This is actually a static link, or it is a |
15010 | -Bsymbolic link and the symbol is defined | |
15011 | locally, or the symbol was forced to be local | |
15012 | because of a version file. */ | |
15013 | ; | |
15014 | else | |
15015 | { | |
039b3fef | 15016 | indx = h->elf.dynindx; |
d881513a AM |
15017 | unresolved_reloc = FALSE; |
15018 | } | |
039b3fef | 15019 | ent = h->elf.got.glist; |
d881513a | 15020 | } |
411e1bfb | 15021 | else |
5bd4f169 | 15022 | { |
d881513a AM |
15023 | if (local_got_ents == NULL) |
15024 | abort (); | |
15025 | ent = local_got_ents[r_symndx]; | |
5bd4f169 | 15026 | } |
d881513a AM |
15027 | |
15028 | for (; ent != NULL; ent = ent->next) | |
31c76678 | 15029 | if (ent->addend == orig_rel.r_addend |
e717da7e | 15030 | && ent->owner == input_bfd |
d881513a AM |
15031 | && ent->tls_type == tls_type) |
15032 | break; | |
5bd4f169 | 15033 | } |
411e1bfb | 15034 | |
927be08e AM |
15035 | if (ent == NULL) |
15036 | abort (); | |
15037 | if (ent->is_indirect) | |
15038 | ent = ent->got.ent; | |
15039 | offp = &ent->got.offset; | |
15040 | got = ppc64_elf_tdata (ent->owner)->got; | |
e717da7e AM |
15041 | if (got == NULL) |
15042 | abort (); | |
15043 | ||
411e1bfb AM |
15044 | /* The offset must always be a multiple of 8. We use the |
15045 | least significant bit to record whether we have already | |
15046 | processed this entry. */ | |
d881513a | 15047 | off = *offp; |
411e1bfb AM |
15048 | if ((off & 1) != 0) |
15049 | off &= ~1; | |
5bd4f169 AM |
15050 | else |
15051 | { | |
411e1bfb AM |
15052 | /* Generate relocs for the dynamic linker, except in |
15053 | the case of TLSLD where we'll use one entry per | |
15054 | module. */ | |
25f23106 AM |
15055 | asection *relgot; |
15056 | bfd_boolean ifunc; | |
e717da7e | 15057 | |
d881513a | 15058 | *offp = off | 1; |
25f23106 AM |
15059 | relgot = NULL; |
15060 | ifunc = (h != NULL | |
15061 | ? h->elf.type == STT_GNU_IFUNC | |
15062 | : ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC); | |
19e08130 | 15063 | if (ifunc) |
82e66161 AM |
15064 | { |
15065 | relgot = htab->elf.irelplt; | |
15066 | if (indx == 0) | |
15067 | htab->local_ifunc_resolver = 1; | |
15068 | else if (is_static_defined (&h->elf)) | |
15069 | htab->maybe_local_ifunc_resolver = 1; | |
15070 | } | |
f0158f44 AM |
15071 | else if (indx != 0 |
15072 | || (bfd_link_pic (info) | |
15073 | && (h == NULL | |
21d68fcd | 15074 | || !UNDEFWEAK_NO_DYNAMIC_RELOC (info, &h->elf) |
f0158f44 | 15075 | || (tls_type == (TLS_TLS | TLS_LD) |
f15d0b54 AM |
15076 | && !h->elf.def_dynamic)) |
15077 | && !(tls_type == (TLS_TLS | TLS_TPREL) | |
15078 | && bfd_link_executable (info) | |
15079 | && SYMBOL_REFERENCES_LOCAL (info, &h->elf)))) | |
19e08130 | 15080 | relgot = ppc64_elf_tdata (ent->owner)->relgot; |
25f23106 | 15081 | if (relgot != NULL) |
5bd4f169 | 15082 | { |
e717da7e AM |
15083 | outrel.r_offset = (got->output_section->vma |
15084 | + got->output_offset | |
411e1bfb | 15085 | + off); |
4cc603a5 | 15086 | outrel.r_addend = addend; |
d881513a | 15087 | if (tls_type & (TLS_LD | TLS_GD)) |
5bd4f169 | 15088 | { |
411e1bfb | 15089 | outrel.r_addend = 0; |
e515b051 | 15090 | outrel.r_info = ELF64_R_INFO (indx, R_PPC64_DTPMOD64); |
d881513a AM |
15091 | if (tls_type == (TLS_TLS | TLS_GD)) |
15092 | { | |
e717da7e AM |
15093 | loc = relgot->contents; |
15094 | loc += (relgot->reloc_count++ | |
d881513a AM |
15095 | * sizeof (Elf64_External_Rela)); |
15096 | bfd_elf64_swap_reloca_out (output_bfd, | |
15097 | &outrel, loc); | |
e515b051 | 15098 | outrel.r_offset += 8; |
4cc603a5 | 15099 | outrel.r_addend = addend; |
d881513a AM |
15100 | outrel.r_info |
15101 | = ELF64_R_INFO (indx, R_PPC64_DTPREL64); | |
d881513a | 15102 | } |
411e1bfb | 15103 | } |
951fd09b | 15104 | else if (tls_type == (TLS_TLS | TLS_DTPREL)) |
411e1bfb | 15105 | outrel.r_info = ELF64_R_INFO (indx, R_PPC64_DTPREL64); |
951fd09b | 15106 | else if (tls_type == (TLS_TLS | TLS_TPREL)) |
411e1bfb | 15107 | outrel.r_info = ELF64_R_INFO (indx, R_PPC64_TPREL64); |
25f23106 AM |
15108 | else if (indx != 0) |
15109 | outrel.r_info = ELF64_R_INFO (indx, R_PPC64_GLOB_DAT); | |
15110 | else | |
81407a69 | 15111 | { |
25f23106 AM |
15112 | if (ifunc) |
15113 | outrel.r_info = ELF64_R_INFO (0, R_PPC64_IRELATIVE); | |
15114 | else | |
15115 | outrel.r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE); | |
81407a69 AM |
15116 | |
15117 | /* Write the .got section contents for the sake | |
15118 | of prelink. */ | |
e717da7e | 15119 | loc = got->contents + off; |
23fbd6fa JJ |
15120 | bfd_put_64 (output_bfd, outrel.r_addend + relocation, |
15121 | loc); | |
81407a69 | 15122 | } |
81407a69 AM |
15123 | |
15124 | if (indx == 0 && tls_type != (TLS_TLS | TLS_LD)) | |
e515b051 AM |
15125 | { |
15126 | outrel.r_addend += relocation; | |
15127 | if (tls_type & (TLS_GD | TLS_DTPREL | TLS_TPREL)) | |
989f9879 AM |
15128 | { |
15129 | if (htab->elf.tls_sec == NULL) | |
15130 | outrel.r_addend = 0; | |
15131 | else | |
15132 | outrel.r_addend -= htab->elf.tls_sec->vma; | |
15133 | } | |
e515b051 | 15134 | } |
e717da7e AM |
15135 | loc = relgot->contents; |
15136 | loc += (relgot->reloc_count++ | |
411e1bfb AM |
15137 | * sizeof (Elf64_External_Rela)); |
15138 | bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc); | |
15139 | } | |
15140 | ||
ad8e1ba5 | 15141 | /* Init the .got section contents here if we're not |
81407a69 | 15142 | emitting a reloc. */ |
d881513a | 15143 | else |
411e1bfb | 15144 | { |
4cc603a5 | 15145 | relocation += addend; |
f0158f44 | 15146 | if (tls_type != 0) |
411e1bfb | 15147 | { |
989f9879 AM |
15148 | if (htab->elf.tls_sec == NULL) |
15149 | relocation = 0; | |
15150 | else | |
15151 | { | |
f0158f44 AM |
15152 | if (tls_type & TLS_LD) |
15153 | relocation = 0; | |
15154 | else | |
15155 | relocation -= htab->elf.tls_sec->vma + DTP_OFFSET; | |
676ee2b5 | 15156 | if (tls_type & TLS_TPREL) |
989f9879 AM |
15157 | relocation += DTP_OFFSET - TP_OFFSET; |
15158 | } | |
5bd4f169 | 15159 | |
f0158f44 | 15160 | if (tls_type & (TLS_GD | TLS_LD)) |
7b609f53 AM |
15161 | { |
15162 | bfd_put_64 (output_bfd, relocation, | |
e717da7e | 15163 | got->contents + off + 8); |
676ee2b5 | 15164 | relocation = 1; |
7b609f53 | 15165 | } |
411e1bfb AM |
15166 | } |
15167 | bfd_put_64 (output_bfd, relocation, | |
e717da7e | 15168 | got->contents + off); |
5bd4f169 AM |
15169 | } |
15170 | } | |
15171 | ||
65f38f15 AM |
15172 | if (off >= (bfd_vma) -2) |
15173 | abort (); | |
15174 | ||
bf102f86 | 15175 | relocation = got->output_section->vma + got->output_offset + off; |
6f20ed8a | 15176 | addend = -(TOCstart + htab->sec_info[input_section->id].toc_off); |
5bd4f169 | 15177 | } |
65f38f15 AM |
15178 | break; |
15179 | ||
15180 | case R_PPC64_PLT16_HA: | |
15181 | case R_PPC64_PLT16_HI: | |
15182 | case R_PPC64_PLT16_LO: | |
08be3224 | 15183 | case R_PPC64_PLT16_LO_DS: |
65f38f15 AM |
15184 | case R_PPC64_PLT32: |
15185 | case R_PPC64_PLT64: | |
23cedd1d AM |
15186 | case R_PPC64_PLTSEQ: |
15187 | case R_PPC64_PLTCALL: | |
65f38f15 AM |
15188 | /* Relocation is to the entry for this symbol in the |
15189 | procedure linkage table. */ | |
23cedd1d | 15190 | unresolved_reloc = TRUE; |
cbf95972 AM |
15191 | { |
15192 | struct plt_entry **plt_list = NULL; | |
15193 | if (h != NULL) | |
15194 | plt_list = &h->elf.plt.plist; | |
15195 | else if (local_got_ents != NULL) | |
15196 | { | |
15197 | struct plt_entry **local_plt = (struct plt_entry **) | |
15198 | (local_got_ents + symtab_hdr->sh_info); | |
2d7ad24e | 15199 | plt_list = local_plt + r_symndx; |
cbf95972 AM |
15200 | } |
15201 | if (plt_list) | |
15202 | { | |
15203 | struct plt_entry *ent; | |
65f38f15 | 15204 | |
cbf95972 AM |
15205 | for (ent = *plt_list; ent != NULL; ent = ent->next) |
15206 | if (ent->plt.offset != (bfd_vma) -1 | |
15207 | && ent->addend == orig_rel.r_addend) | |
15208 | { | |
15209 | asection *plt; | |
08be3224 | 15210 | bfd_vma got; |
cbf95972 AM |
15211 | |
15212 | plt = htab->elf.splt; | |
15213 | if (!htab->elf.dynamic_sections_created | |
15214 | || h == NULL | |
15215 | || h->elf.dynindx == -1) | |
2d7ad24e AM |
15216 | { |
15217 | if (h != NULL | |
15218 | ? h->elf.type == STT_GNU_IFUNC | |
15219 | : ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC) | |
15220 | plt = htab->elf.iplt; | |
15221 | else | |
15222 | plt = htab->pltlocal; | |
15223 | } | |
15224 | relocation = (plt->output_section->vma | |
15225 | + plt->output_offset | |
15226 | + ent->plt.offset); | |
08be3224 AM |
15227 | if (r_type == R_PPC64_PLT16_HA |
15228 | || r_type ==R_PPC64_PLT16_HI | |
15229 | || r_type ==R_PPC64_PLT16_LO | |
15230 | || r_type ==R_PPC64_PLT16_LO_DS) | |
15231 | { | |
15232 | got = (elf_gp (output_bfd) | |
15233 | + htab->sec_info[input_section->id].toc_off); | |
15234 | relocation -= got; | |
15235 | } | |
cbf95972 AM |
15236 | addend = 0; |
15237 | unresolved_reloc = FALSE; | |
15238 | break; | |
15239 | } | |
15240 | } | |
15241 | } | |
65f38f15 | 15242 | break; |
5bd4f169 | 15243 | |
0b13192e AM |
15244 | case R_PPC64_TOC: |
15245 | /* Relocation value is TOC base. */ | |
15246 | relocation = TOCstart; | |
cf35638d | 15247 | if (r_symndx == STN_UNDEF) |
6f20ed8a | 15248 | relocation += htab->sec_info[input_section->id].toc_off; |
8517fae7 AM |
15249 | else if (unresolved_reloc) |
15250 | ; | |
6f20ed8a AM |
15251 | else if (sec != NULL && sec->id < htab->sec_info_arr_size) |
15252 | relocation += htab->sec_info[sec->id].toc_off; | |
0b13192e AM |
15253 | else |
15254 | unresolved_reloc = TRUE; | |
ab96bf03 | 15255 | goto dodyn; |
0b13192e | 15256 | |
5bd4f169 AM |
15257 | /* TOC16 relocs. We want the offset relative to the TOC base, |
15258 | which is the address of the start of the TOC plus 0x8000. | |
15259 | The TOC consists of sections .got, .toc, .tocbss, and .plt, | |
15260 | in this order. */ | |
65f38f15 AM |
15261 | case R_PPC64_TOC16: |
15262 | case R_PPC64_TOC16_LO: | |
15263 | case R_PPC64_TOC16_HI: | |
15264 | case R_PPC64_TOC16_DS: | |
15265 | case R_PPC64_TOC16_LO_DS: | |
15266 | case R_PPC64_TOC16_HA: | |
6f20ed8a | 15267 | addend -= TOCstart + htab->sec_info[input_section->id].toc_off; |
5bd4f169 AM |
15268 | break; |
15269 | ||
15270 | /* Relocate against the beginning of the section. */ | |
65f38f15 AM |
15271 | case R_PPC64_SECTOFF: |
15272 | case R_PPC64_SECTOFF_LO: | |
15273 | case R_PPC64_SECTOFF_HI: | |
15274 | case R_PPC64_SECTOFF_DS: | |
15275 | case R_PPC64_SECTOFF_LO_DS: | |
15276 | case R_PPC64_SECTOFF_HA: | |
4ce794b7 | 15277 | if (sec != NULL) |
65f38f15 | 15278 | addend -= sec->output_section->vma; |
5bd4f169 AM |
15279 | break; |
15280 | ||
25f23106 AM |
15281 | case R_PPC64_REL16: |
15282 | case R_PPC64_REL16_LO: | |
15283 | case R_PPC64_REL16_HI: | |
15284 | case R_PPC64_REL16_HA: | |
a680de9a | 15285 | case R_PPC64_REL16DX_HA: |
25f23106 AM |
15286 | break; |
15287 | ||
721956f4 AM |
15288 | case R_PPC64_REL14: |
15289 | case R_PPC64_REL14_BRNTAKEN: | |
15290 | case R_PPC64_REL14_BRTAKEN: | |
5d1634d7 AM |
15291 | case R_PPC64_REL24: |
15292 | break; | |
15293 | ||
411e1bfb AM |
15294 | case R_PPC64_TPREL16: |
15295 | case R_PPC64_TPREL16_LO: | |
15296 | case R_PPC64_TPREL16_HI: | |
15297 | case R_PPC64_TPREL16_HA: | |
15298 | case R_PPC64_TPREL16_DS: | |
15299 | case R_PPC64_TPREL16_LO_DS: | |
f9c6b907 AM |
15300 | case R_PPC64_TPREL16_HIGH: |
15301 | case R_PPC64_TPREL16_HIGHA: | |
411e1bfb AM |
15302 | case R_PPC64_TPREL16_HIGHER: |
15303 | case R_PPC64_TPREL16_HIGHERA: | |
15304 | case R_PPC64_TPREL16_HIGHEST: | |
15305 | case R_PPC64_TPREL16_HIGHESTA: | |
766bc656 AM |
15306 | if (h != NULL |
15307 | && h->elf.root.type == bfd_link_hash_undefweak | |
15308 | && h->elf.dynindx == -1) | |
15309 | { | |
15310 | /* Make this relocation against an undefined weak symbol | |
15311 | resolve to zero. This is really just a tweak, since | |
15312 | code using weak externs ought to check that they are | |
15313 | defined before using them. */ | |
15314 | bfd_byte *p = contents + rel->r_offset - d_offset; | |
15315 | ||
95f0d0d2 | 15316 | insn = bfd_get_32 (input_bfd, p); |
766bc656 AM |
15317 | insn = _bfd_elf_ppc_at_tprel_transform (insn, 13); |
15318 | if (insn != 0) | |
95f0d0d2 | 15319 | bfd_put_32 (input_bfd, insn, p); |
766bc656 AM |
15320 | break; |
15321 | } | |
989f9879 AM |
15322 | if (htab->elf.tls_sec != NULL) |
15323 | addend -= htab->elf.tls_sec->vma + TP_OFFSET; | |
7c8bbca5 AM |
15324 | /* The TPREL16 relocs shouldn't really be used in shared |
15325 | libs or with non-local symbols as that will result in | |
15326 | DT_TEXTREL being set, but support them anyway. */ | |
15327 | goto dodyn; | |
411e1bfb AM |
15328 | |
15329 | case R_PPC64_DTPREL16: | |
15330 | case R_PPC64_DTPREL16_LO: | |
15331 | case R_PPC64_DTPREL16_HI: | |
15332 | case R_PPC64_DTPREL16_HA: | |
15333 | case R_PPC64_DTPREL16_DS: | |
15334 | case R_PPC64_DTPREL16_LO_DS: | |
f9c6b907 AM |
15335 | case R_PPC64_DTPREL16_HIGH: |
15336 | case R_PPC64_DTPREL16_HIGHA: | |
411e1bfb AM |
15337 | case R_PPC64_DTPREL16_HIGHER: |
15338 | case R_PPC64_DTPREL16_HIGHERA: | |
15339 | case R_PPC64_DTPREL16_HIGHEST: | |
15340 | case R_PPC64_DTPREL16_HIGHESTA: | |
989f9879 AM |
15341 | if (htab->elf.tls_sec != NULL) |
15342 | addend -= htab->elf.tls_sec->vma + DTP_OFFSET; | |
411e1bfb AM |
15343 | break; |
15344 | ||
45965137 AM |
15345 | case R_PPC64_ADDR64_LOCAL: |
15346 | addend += PPC64_LOCAL_ENTRY_OFFSET (h != NULL | |
15347 | ? h->elf.other | |
15348 | : sym->st_other); | |
15349 | break; | |
15350 | ||
e515b051 AM |
15351 | case R_PPC64_DTPMOD64: |
15352 | relocation = 1; | |
15353 | addend = 0; | |
15354 | goto dodyn; | |
15355 | ||
411e1bfb | 15356 | case R_PPC64_TPREL64: |
989f9879 AM |
15357 | if (htab->elf.tls_sec != NULL) |
15358 | addend -= htab->elf.tls_sec->vma + TP_OFFSET; | |
411e1bfb AM |
15359 | goto dodyn; |
15360 | ||
15361 | case R_PPC64_DTPREL64: | |
989f9879 AM |
15362 | if (htab->elf.tls_sec != NULL) |
15363 | addend -= htab->elf.tls_sec->vma + DTP_OFFSET; | |
1a0670f3 | 15364 | /* Fall through. */ |
411e1bfb | 15365 | |
65f38f15 AM |
15366 | /* Relocations that may need to be propagated if this is a |
15367 | dynamic object. */ | |
04c9666a | 15368 | case R_PPC64_REL30: |
65f38f15 AM |
15369 | case R_PPC64_REL32: |
15370 | case R_PPC64_REL64: | |
15371 | case R_PPC64_ADDR14: | |
15372 | case R_PPC64_ADDR14_BRNTAKEN: | |
15373 | case R_PPC64_ADDR14_BRTAKEN: | |
15374 | case R_PPC64_ADDR16: | |
15375 | case R_PPC64_ADDR16_DS: | |
15376 | case R_PPC64_ADDR16_HA: | |
15377 | case R_PPC64_ADDR16_HI: | |
f9c6b907 AM |
15378 | case R_PPC64_ADDR16_HIGH: |
15379 | case R_PPC64_ADDR16_HIGHA: | |
65f38f15 AM |
15380 | case R_PPC64_ADDR16_HIGHER: |
15381 | case R_PPC64_ADDR16_HIGHERA: | |
15382 | case R_PPC64_ADDR16_HIGHEST: | |
15383 | case R_PPC64_ADDR16_HIGHESTA: | |
15384 | case R_PPC64_ADDR16_LO: | |
15385 | case R_PPC64_ADDR16_LO_DS: | |
15386 | case R_PPC64_ADDR24: | |
65f38f15 AM |
15387 | case R_PPC64_ADDR32: |
15388 | case R_PPC64_ADDR64: | |
15389 | case R_PPC64_UADDR16: | |
15390 | case R_PPC64_UADDR32: | |
15391 | case R_PPC64_UADDR64: | |
411e1bfb | 15392 | dodyn: |
5d1634d7 | 15393 | if ((input_section->flags & SEC_ALLOC) == 0) |
ec338859 AM |
15394 | break; |
15395 | ||
41bd81ab AM |
15396 | if (NO_OPD_RELOCS && is_opd) |
15397 | break; | |
15398 | ||
8a9e8e72 | 15399 | if (bfd_link_pic (info) |
b1b07054 AM |
15400 | ? ((h == NULL |
15401 | || h->dyn_relocs != NULL) | |
15402 | && ((h != NULL && pc_dynrelocs (h)) | |
15403 | || must_be_dyn_reloc (info, r_type))) | |
8a9e8e72 AM |
15404 | : (h != NULL |
15405 | ? h->dyn_relocs != NULL | |
d311bc8b | 15406 | : ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC)) |
65f38f15 | 15407 | { |
b34976b6 | 15408 | bfd_boolean skip, relocate; |
65f38f15 | 15409 | asection *sreloc; |
1cf1f670 | 15410 | bfd_vma out_off; |
82e66161 | 15411 | long indx = 0; |
65f38f15 AM |
15412 | |
15413 | /* When generating a dynamic object, these relocations | |
15414 | are copied into the output file to be resolved at run | |
15415 | time. */ | |
15416 | ||
b34976b6 AM |
15417 | skip = FALSE; |
15418 | relocate = FALSE; | |
65f38f15 | 15419 | |
1cf1f670 AM |
15420 | out_off = _bfd_elf_section_offset (output_bfd, info, |
15421 | input_section, rel->r_offset); | |
15422 | if (out_off == (bfd_vma) -1) | |
b34976b6 | 15423 | skip = TRUE; |
1cf1f670 | 15424 | else if (out_off == (bfd_vma) -2) |
b34976b6 | 15425 | skip = TRUE, relocate = TRUE; |
1cf1f670 AM |
15426 | out_off += (input_section->output_section->vma |
15427 | + input_section->output_offset); | |
15428 | outrel.r_offset = out_off; | |
411e1bfb | 15429 | outrel.r_addend = rel->r_addend; |
65f38f15 | 15430 | |
1cf1f670 AM |
15431 | /* Optimize unaligned reloc use. */ |
15432 | if ((r_type == R_PPC64_ADDR64 && (out_off & 7) != 0) | |
15433 | || (r_type == R_PPC64_UADDR64 && (out_off & 7) == 0)) | |
15434 | r_type ^= R_PPC64_ADDR64 ^ R_PPC64_UADDR64; | |
15435 | else if ((r_type == R_PPC64_ADDR32 && (out_off & 3) != 0) | |
15436 | || (r_type == R_PPC64_UADDR32 && (out_off & 3) == 0)) | |
15437 | r_type ^= R_PPC64_ADDR32 ^ R_PPC64_UADDR32; | |
15438 | else if ((r_type == R_PPC64_ADDR16 && (out_off & 1) != 0) | |
15439 | || (r_type == R_PPC64_UADDR16 && (out_off & 1) == 0)) | |
15440 | r_type ^= R_PPC64_ADDR16 ^ R_PPC64_UADDR16; | |
15441 | ||
65f38f15 | 15442 | if (skip) |
0bb2d96a | 15443 | memset (&outrel, 0, sizeof outrel); |
afe397ea | 15444 | else if (!SYMBOL_REFERENCES_LOCAL (info, &h->elf) |
0b13192e AM |
15445 | && !is_opd |
15446 | && r_type != R_PPC64_TOC) | |
14acf4dc | 15447 | { |
82e66161 AM |
15448 | indx = h->elf.dynindx; |
15449 | BFD_ASSERT (indx != -1); | |
15450 | outrel.r_info = ELF64_R_INFO (indx, r_type); | |
14acf4dc | 15451 | } |
65f38f15 AM |
15452 | else |
15453 | { | |
41bd81ab AM |
15454 | /* This symbol is local, or marked to become local, |
15455 | or this is an opd section reloc which must point | |
15456 | at a local function. */ | |
65f38f15 | 15457 | outrel.r_addend += relocation; |
e86ce104 | 15458 | if (r_type == R_PPC64_ADDR64 || r_type == R_PPC64_TOC) |
65f38f15 | 15459 | { |
3fad3c7c | 15460 | if (is_opd && h != NULL) |
afbe61cf AM |
15461 | { |
15462 | /* Lie about opd entries. This case occurs | |
15463 | when building shared libraries and we | |
15464 | reference a function in another shared | |
3fad3c7c AM |
15465 | lib. The same thing happens for a weak |
15466 | definition in an application that's | |
15467 | overridden by a strong definition in a | |
15468 | shared lib. (I believe this is a generic | |
15469 | bug in binutils handling of weak syms.) | |
15470 | In these cases we won't use the opd | |
1e2f5b6e | 15471 | entry in this lib. */ |
b34976b6 | 15472 | unresolved_reloc = FALSE; |
afbe61cf | 15473 | } |
25f23106 AM |
15474 | if (!is_opd |
15475 | && r_type == R_PPC64_ADDR64 | |
15476 | && (h != NULL | |
15477 | ? h->elf.type == STT_GNU_IFUNC | |
15478 | : ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC)) | |
15479 | outrel.r_info = ELF64_R_INFO (0, R_PPC64_IRELATIVE); | |
15480 | else | |
15481 | { | |
15482 | outrel.r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE); | |
81407a69 | 15483 | |
25f23106 AM |
15484 | /* We need to relocate .opd contents for ld.so. |
15485 | Prelink also wants simple and consistent rules | |
15486 | for relocs. This make all RELATIVE relocs have | |
15487 | *r_offset equal to r_addend. */ | |
15488 | relocate = TRUE; | |
15489 | } | |
65f38f15 AM |
15490 | } |
15491 | else | |
15492 | { | |
25f23106 AM |
15493 | if (h != NULL |
15494 | ? h->elf.type == STT_GNU_IFUNC | |
15495 | : ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC) | |
15496 | { | |
25f53a85 | 15497 | info->callbacks->einfo |
695344c0 | 15498 | /* xgettext:c-format */ |
174d0a74 | 15499 | (_("%H: %s for indirect " |
c1c8c1ef | 15500 | "function `%pT' unsupported\n"), |
25f53a85 | 15501 | input_bfd, input_section, rel->r_offset, |
25f23106 AM |
15502 | ppc64_elf_howto_table[r_type]->name, |
15503 | sym_name); | |
15504 | ret = FALSE; | |
15505 | } | |
cf35638d | 15506 | else if (r_symndx == STN_UNDEF || bfd_is_abs_section (sec)) |
65f38f15 AM |
15507 | ; |
15508 | else if (sec == NULL || sec->owner == NULL) | |
15509 | { | |
15510 | bfd_set_error (bfd_error_bad_value); | |
b34976b6 | 15511 | return FALSE; |
65f38f15 AM |
15512 | } |
15513 | else | |
15514 | { | |
15515 | asection *osec; | |
15516 | ||
15517 | osec = sec->output_section; | |
15518 | indx = elf_section_data (osec)->dynindx; | |
15519 | ||
74541ad4 AM |
15520 | if (indx == 0) |
15521 | { | |
15522 | if ((osec->flags & SEC_READONLY) == 0 | |
15523 | && htab->elf.data_index_section != NULL) | |
15524 | osec = htab->elf.data_index_section; | |
15525 | else | |
15526 | osec = htab->elf.text_index_section; | |
15527 | indx = elf_section_data (osec)->dynindx; | |
15528 | } | |
15529 | BFD_ASSERT (indx != 0); | |
15530 | ||
65f38f15 AM |
15531 | /* We are turning this relocation into one |
15532 | against a section symbol, so subtract out | |
15533 | the output section's address but not the | |
15534 | offset of the input section in the output | |
15535 | section. */ | |
15536 | outrel.r_addend -= osec->vma; | |
15537 | } | |
15538 | ||
15539 | outrel.r_info = ELF64_R_INFO (indx, r_type); | |
15540 | } | |
15541 | } | |
15542 | ||
15543 | sreloc = elf_section_data (input_section)->sreloc; | |
19e08130 AM |
15544 | if (h != NULL |
15545 | ? h->elf.type == STT_GNU_IFUNC | |
15546 | : ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC) | |
82e66161 AM |
15547 | { |
15548 | sreloc = htab->elf.irelplt; | |
15549 | if (indx == 0) | |
15550 | htab->local_ifunc_resolver = 1; | |
15551 | else if (is_static_defined (&h->elf)) | |
15552 | htab->maybe_local_ifunc_resolver = 1; | |
15553 | } | |
65f38f15 AM |
15554 | if (sreloc == NULL) |
15555 | abort (); | |
15556 | ||
dfbb6ac9 AM |
15557 | if (sreloc->reloc_count * sizeof (Elf64_External_Rela) |
15558 | >= sreloc->size) | |
15559 | abort (); | |
947216bf AM |
15560 | loc = sreloc->contents; |
15561 | loc += sreloc->reloc_count++ * sizeof (Elf64_External_Rela); | |
65f38f15 AM |
15562 | bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc); |
15563 | ||
15564 | /* If this reloc is against an external symbol, it will | |
15565 | be computed at runtime, so there's no need to do | |
81407a69 AM |
15566 | anything now. However, for the sake of prelink ensure |
15567 | that the section contents are a known value. */ | |
65f38f15 | 15568 | if (! relocate) |
81407a69 AM |
15569 | { |
15570 | unresolved_reloc = FALSE; | |
15571 | /* The value chosen here is quite arbitrary as ld.so | |
15572 | ignores section contents except for the special | |
15573 | case of .opd where the contents might be accessed | |
15574 | before relocation. Choose zero, as that won't | |
15575 | cause reloc overflow. */ | |
15576 | relocation = 0; | |
15577 | addend = 0; | |
15578 | /* Use *r_offset == r_addend for R_PPC64_ADDR64 relocs | |
15579 | to improve backward compatibility with older | |
15580 | versions of ld. */ | |
15581 | if (r_type == R_PPC64_ADDR64) | |
15582 | addend = outrel.r_addend; | |
15583 | /* Adjust pc_relative relocs to have zero in *r_offset. */ | |
4ce794b7 | 15584 | else if (ppc64_elf_howto_table[r_type]->pc_relative) |
f0158f44 | 15585 | addend = outrel.r_offset; |
81407a69 | 15586 | } |
65f38f15 | 15587 | } |
5bd4f169 AM |
15588 | break; |
15589 | ||
65f38f15 AM |
15590 | case R_PPC64_COPY: |
15591 | case R_PPC64_GLOB_DAT: | |
15592 | case R_PPC64_JMP_SLOT: | |
25f23106 | 15593 | case R_PPC64_JMP_IREL: |
65f38f15 AM |
15594 | case R_PPC64_RELATIVE: |
15595 | /* We shouldn't ever see these dynamic relocs in relocatable | |
15596 | files. */ | |
ae9a127f | 15597 | /* Fall through. */ |
65f38f15 AM |
15598 | |
15599 | case R_PPC64_PLTGOT16: | |
15600 | case R_PPC64_PLTGOT16_DS: | |
15601 | case R_PPC64_PLTGOT16_HA: | |
15602 | case R_PPC64_PLTGOT16_HI: | |
15603 | case R_PPC64_PLTGOT16_LO: | |
15604 | case R_PPC64_PLTGOT16_LO_DS: | |
15605 | case R_PPC64_PLTREL32: | |
15606 | case R_PPC64_PLTREL64: | |
15607 | /* These ones haven't been implemented yet. */ | |
15608 | ||
25f53a85 | 15609 | info->callbacks->einfo |
695344c0 | 15610 | /* xgettext:c-format */ |
c1c8c1ef | 15611 | (_("%P: %pB: %s is not supported for `%pT'\n"), |
d003868e | 15612 | input_bfd, |
4ce794b7 | 15613 | ppc64_elf_howto_table[r_type]->name, sym_name); |
5bd4f169 AM |
15614 | |
15615 | bfd_set_error (bfd_error_invalid_operation); | |
b34976b6 | 15616 | ret = FALSE; |
c316a17c | 15617 | goto copy_reloc; |
65f38f15 | 15618 | } |
5bd4f169 | 15619 | |
67f0cbdb AM |
15620 | /* Multi-instruction sequences that access the TOC can be |
15621 | optimized, eg. addis ra,r2,0; addi rb,ra,x; | |
07d6d2b8 | 15622 | to nop; addi rb,r2,x; */ |
67f0cbdb AM |
15623 | switch (r_type) |
15624 | { | |
15625 | default: | |
15626 | break; | |
15627 | ||
15628 | case R_PPC64_GOT_TLSLD16_HI: | |
15629 | case R_PPC64_GOT_TLSGD16_HI: | |
15630 | case R_PPC64_GOT_TPREL16_HI: | |
15631 | case R_PPC64_GOT_DTPREL16_HI: | |
15632 | case R_PPC64_GOT16_HI: | |
15633 | case R_PPC64_TOC16_HI: | |
15634 | /* These relocs would only be useful if building up an | |
15635 | offset to later add to r2, perhaps in an indexed | |
15636 | addressing mode instruction. Don't try to optimize. | |
15637 | Unfortunately, the possibility of someone building up an | |
15638 | offset like this or even with the HA relocs, means that | |
15639 | we need to check the high insn when optimizing the low | |
15640 | insn. */ | |
15641 | break; | |
15642 | ||
23cedd1d AM |
15643 | case R_PPC64_PLTCALL: |
15644 | if (unresolved_reloc) | |
15645 | { | |
15646 | /* No plt entry. Make this into a direct call. */ | |
15647 | bfd_byte *p = contents + rel->r_offset; | |
15648 | insn = bfd_get_32 (input_bfd, p); | |
15649 | insn &= 1; | |
15650 | bfd_put_32 (input_bfd, B_DOT | insn, p); | |
15651 | bfd_put_32 (input_bfd, NOP, p + 4); | |
15652 | unresolved_reloc = save_unresolved_reloc; | |
15653 | r_type = R_PPC64_REL24; | |
15654 | } | |
15655 | break; | |
15656 | ||
15657 | case R_PPC64_PLTSEQ: | |
15658 | if (unresolved_reloc) | |
15659 | { | |
15660 | unresolved_reloc = FALSE; | |
15661 | goto nop_it; | |
15662 | } | |
15663 | break; | |
15664 | ||
15665 | case R_PPC64_PLT16_HA: | |
15666 | if (unresolved_reloc) | |
15667 | { | |
15668 | unresolved_reloc = FALSE; | |
15669 | goto nop_it; | |
15670 | } | |
15671 | /* Fall through. */ | |
67f0cbdb AM |
15672 | case R_PPC64_GOT_TLSLD16_HA: |
15673 | case R_PPC64_GOT_TLSGD16_HA: | |
15674 | case R_PPC64_GOT_TPREL16_HA: | |
15675 | case R_PPC64_GOT_DTPREL16_HA: | |
15676 | case R_PPC64_GOT16_HA: | |
15677 | case R_PPC64_TOC16_HA: | |
98528052 | 15678 | if (htab->do_toc_opt && relocation + addend + 0x8000 < 0x10000 |
560c8763 | 15679 | && !ppc64_elf_tdata (input_bfd)->unexpected_toc_insn) |
98528052 | 15680 | { |
23cedd1d AM |
15681 | bfd_byte *p; |
15682 | nop_it: | |
15683 | p = contents + (rel->r_offset & ~3); | |
98528052 | 15684 | bfd_put_32 (input_bfd, NOP, p); |
d830549d | 15685 | goto copy_reloc; |
98528052 | 15686 | } |
67f0cbdb AM |
15687 | break; |
15688 | ||
23cedd1d AM |
15689 | case R_PPC64_PLT16_LO: |
15690 | case R_PPC64_PLT16_LO_DS: | |
15691 | if (unresolved_reloc) | |
15692 | { | |
15693 | unresolved_reloc = FALSE; | |
15694 | goto nop_it; | |
15695 | } | |
15696 | /* Fall through. */ | |
67f0cbdb AM |
15697 | case R_PPC64_GOT_TLSLD16_LO: |
15698 | case R_PPC64_GOT_TLSGD16_LO: | |
15699 | case R_PPC64_GOT_TPREL16_LO_DS: | |
15700 | case R_PPC64_GOT_DTPREL16_LO_DS: | |
15701 | case R_PPC64_GOT16_LO: | |
15702 | case R_PPC64_GOT16_LO_DS: | |
15703 | case R_PPC64_TOC16_LO: | |
15704 | case R_PPC64_TOC16_LO_DS: | |
98528052 | 15705 | if (htab->do_toc_opt && relocation + addend + 0x8000 < 0x10000 |
560c8763 | 15706 | && !ppc64_elf_tdata (input_bfd)->unexpected_toc_insn) |
67f0cbdb AM |
15707 | { |
15708 | bfd_byte *p = contents + (rel->r_offset & ~3); | |
15709 | insn = bfd_get_32 (input_bfd, p); | |
560c8763 AM |
15710 | if ((insn & (0x3f << 26)) == 12u << 26 /* addic */) |
15711 | { | |
15712 | /* Transform addic to addi when we change reg. */ | |
15713 | insn &= ~((0x3f << 26) | (0x1f << 16)); | |
15714 | insn |= (14u << 26) | (2 << 16); | |
15715 | } | |
15716 | else | |
67f0cbdb | 15717 | { |
98528052 AM |
15718 | insn &= ~(0x1f << 16); |
15719 | insn |= 2 << 16; | |
67f0cbdb | 15720 | } |
560c8763 | 15721 | bfd_put_32 (input_bfd, insn, p); |
67f0cbdb AM |
15722 | } |
15723 | break; | |
9a23f96e AM |
15724 | |
15725 | case R_PPC64_TPREL16_HA: | |
15726 | if (htab->do_tls_opt && relocation + addend + 0x8000 < 0x10000) | |
15727 | { | |
15728 | bfd_byte *p = contents + (rel->r_offset & ~3); | |
15729 | insn = bfd_get_32 (input_bfd, p); | |
15730 | if ((insn & ((0x3f << 26) | 0x1f << 16)) | |
15731 | != ((15u << 26) | (13 << 16)) /* addis rt,13,imm */) | |
15732 | /* xgettext:c-format */ | |
15733 | info->callbacks->minfo | |
15734 | (_("%H: warning: %s unexpected insn %#x.\n"), | |
d830549d AM |
15735 | input_bfd, input_section, rel->r_offset, |
15736 | ppc64_elf_howto_table[r_type]->name, insn); | |
9a23f96e | 15737 | else |
d830549d AM |
15738 | { |
15739 | bfd_put_32 (input_bfd, NOP, p); | |
15740 | goto copy_reloc; | |
15741 | } | |
9a23f96e AM |
15742 | } |
15743 | break; | |
15744 | ||
15745 | case R_PPC64_TPREL16_LO: | |
15746 | case R_PPC64_TPREL16_LO_DS: | |
15747 | if (htab->do_tls_opt && relocation + addend + 0x8000 < 0x10000) | |
15748 | { | |
15749 | bfd_byte *p = contents + (rel->r_offset & ~3); | |
15750 | insn = bfd_get_32 (input_bfd, p); | |
15751 | insn &= ~(0x1f << 16); | |
15752 | insn |= 13 << 16; | |
15753 | bfd_put_32 (input_bfd, insn, p); | |
15754 | } | |
15755 | break; | |
67f0cbdb AM |
15756 | } |
15757 | ||
65f38f15 AM |
15758 | /* Do any further special processing. */ |
15759 | switch (r_type) | |
15760 | { | |
15761 | default: | |
15762 | break; | |
15763 | ||
25f23106 | 15764 | case R_PPC64_REL16_HA: |
a680de9a | 15765 | case R_PPC64_REL16DX_HA: |
f9c6b907 AM |
15766 | case R_PPC64_ADDR16_HA: |
15767 | case R_PPC64_ADDR16_HIGHA: | |
65f38f15 AM |
15768 | case R_PPC64_ADDR16_HIGHERA: |
15769 | case R_PPC64_ADDR16_HIGHESTA: | |
65f38f15 AM |
15770 | case R_PPC64_TOC16_HA: |
15771 | case R_PPC64_SECTOFF_HA: | |
411e1bfb | 15772 | case R_PPC64_TPREL16_HA: |
f9c6b907 | 15773 | case R_PPC64_TPREL16_HIGHA: |
411e1bfb | 15774 | case R_PPC64_TPREL16_HIGHERA: |
411e1bfb | 15775 | case R_PPC64_TPREL16_HIGHESTA: |
f9c6b907 AM |
15776 | case R_PPC64_DTPREL16_HA: |
15777 | case R_PPC64_DTPREL16_HIGHA: | |
411e1bfb | 15778 | case R_PPC64_DTPREL16_HIGHERA: |
411e1bfb | 15779 | case R_PPC64_DTPREL16_HIGHESTA: |
65f38f15 AM |
15780 | /* It's just possible that this symbol is a weak symbol |
15781 | that's not actually defined anywhere. In that case, | |
15782 | 'sec' would be NULL, and we should leave the symbol | |
15783 | alone (it will be set to zero elsewhere in the link). */ | |
5c5f6e17 AM |
15784 | if (sec == NULL) |
15785 | break; | |
1a0670f3 | 15786 | /* Fall through. */ |
5c5f6e17 AM |
15787 | |
15788 | case R_PPC64_GOT16_HA: | |
15789 | case R_PPC64_PLTGOT16_HA: | |
15790 | case R_PPC64_PLT16_HA: | |
15791 | case R_PPC64_GOT_TLSGD16_HA: | |
15792 | case R_PPC64_GOT_TLSLD16_HA: | |
15793 | case R_PPC64_GOT_TPREL16_HA: | |
15794 | case R_PPC64_GOT_DTPREL16_HA: | |
15795 | /* Add 0x10000 if sign bit in 0:15 is set. | |
15796 | Bits 0:15 are not used. */ | |
15797 | addend += 0x8000; | |
65f38f15 AM |
15798 | break; |
15799 | ||
15800 | case R_PPC64_ADDR16_DS: | |
15801 | case R_PPC64_ADDR16_LO_DS: | |
15802 | case R_PPC64_GOT16_DS: | |
15803 | case R_PPC64_GOT16_LO_DS: | |
15804 | case R_PPC64_PLT16_LO_DS: | |
15805 | case R_PPC64_SECTOFF_DS: | |
15806 | case R_PPC64_SECTOFF_LO_DS: | |
15807 | case R_PPC64_TOC16_DS: | |
15808 | case R_PPC64_TOC16_LO_DS: | |
15809 | case R_PPC64_PLTGOT16_DS: | |
15810 | case R_PPC64_PLTGOT16_LO_DS: | |
411e1bfb AM |
15811 | case R_PPC64_GOT_TPREL16_DS: |
15812 | case R_PPC64_GOT_TPREL16_LO_DS: | |
15813 | case R_PPC64_GOT_DTPREL16_DS: | |
15814 | case R_PPC64_GOT_DTPREL16_LO_DS: | |
15815 | case R_PPC64_TPREL16_DS: | |
15816 | case R_PPC64_TPREL16_LO_DS: | |
15817 | case R_PPC64_DTPREL16_DS: | |
15818 | case R_PPC64_DTPREL16_LO_DS: | |
adadcc0c AM |
15819 | insn = bfd_get_32 (input_bfd, contents + (rel->r_offset & ~3)); |
15820 | mask = 3; | |
a680de9a PB |
15821 | /* If this reloc is against an lq, lxv, or stxv insn, then |
15822 | the value must be a multiple of 16. This is somewhat of | |
15823 | a hack, but the "correct" way to do this by defining _DQ | |
15824 | forms of all the _DS relocs bloats all reloc switches in | |
15825 | this file. It doesn't make much sense to use these | |
15826 | relocs in data, so testing the insn should be safe. */ | |
15827 | if ((insn & (0x3f << 26)) == (56u << 26) | |
15828 | || ((insn & (0x3f << 26)) == (61u << 26) && (insn & 3) == 1)) | |
adadcc0c | 15829 | mask = 15; |
a680de9a PB |
15830 | relocation += addend; |
15831 | addend = insn & (mask ^ 3); | |
15832 | if ((relocation & mask) != 0) | |
65f38f15 | 15833 | { |
a680de9a | 15834 | relocation ^= relocation & mask; |
25f53a85 | 15835 | info->callbacks->einfo |
695344c0 | 15836 | /* xgettext:c-format */ |
174d0a74 | 15837 | (_("%H: error: %s not a multiple of %u\n"), |
25f53a85 | 15838 | input_bfd, input_section, rel->r_offset, |
d830549d | 15839 | ppc64_elf_howto_table[r_type]->name, |
adadcc0c | 15840 | mask + 1); |
65f38f15 | 15841 | bfd_set_error (bfd_error_bad_value); |
b34976b6 | 15842 | ret = FALSE; |
c316a17c | 15843 | goto copy_reloc; |
65f38f15 AM |
15844 | } |
15845 | break; | |
5bd4f169 AM |
15846 | } |
15847 | ||
239e1f3a AM |
15848 | /* Dynamic relocs are not propagated for SEC_DEBUGGING sections |
15849 | because such sections are not SEC_ALLOC and thus ld.so will | |
15850 | not process them. */ | |
d830549d | 15851 | howto = ppc64_elf_howto_table[(int) r_type]; |
65f38f15 | 15852 | if (unresolved_reloc |
239e1f3a | 15853 | && !((input_section->flags & SEC_DEBUGGING) != 0 |
1d5316ab AM |
15854 | && h->elf.def_dynamic) |
15855 | && _bfd_elf_section_offset (output_bfd, info, input_section, | |
15856 | rel->r_offset) != (bfd_vma) -1) | |
9c07fe7c | 15857 | { |
25f53a85 | 15858 | info->callbacks->einfo |
695344c0 | 15859 | /* xgettext:c-format */ |
c1c8c1ef | 15860 | (_("%H: unresolvable %s against `%pT'\n"), |
25f53a85 | 15861 | input_bfd, input_section, rel->r_offset, |
b80eed39 | 15862 | howto->name, |
039b3fef | 15863 | h->elf.root.root.string); |
b34976b6 | 15864 | ret = FALSE; |
9c07fe7c | 15865 | } |
5bd4f169 | 15866 | |
b80eed39 AM |
15867 | /* 16-bit fields in insns mostly have signed values, but a |
15868 | few insns have 16-bit unsigned values. Really, we should | |
15869 | have different reloc types. */ | |
15870 | if (howto->complain_on_overflow != complain_overflow_dont | |
15871 | && howto->dst_mask == 0xffff | |
15872 | && (input_section->flags & SEC_CODE) != 0) | |
15873 | { | |
15874 | enum complain_overflow complain = complain_overflow_signed; | |
15875 | ||
15876 | insn = bfd_get_32 (input_bfd, contents + (rel->r_offset & ~3)); | |
a47622ac AM |
15877 | if ((insn & (0x3f << 26)) == 10u << 26 /* cmpli */) |
15878 | complain = complain_overflow_bitfield; | |
15879 | else if (howto->rightshift == 0 | |
15880 | ? ((insn & (0x3f << 26)) == 28u << 26 /* andi */ | |
15881 | || (insn & (0x3f << 26)) == 24u << 26 /* ori */ | |
15882 | || (insn & (0x3f << 26)) == 26u << 26 /* xori */) | |
15883 | : ((insn & (0x3f << 26)) == 29u << 26 /* andis */ | |
15884 | || (insn & (0x3f << 26)) == 25u << 26 /* oris */ | |
15885 | || (insn & (0x3f << 26)) == 27u << 26 /* xoris */)) | |
b80eed39 AM |
15886 | complain = complain_overflow_unsigned; |
15887 | if (howto->complain_on_overflow != complain) | |
15888 | { | |
15889 | alt_howto = *howto; | |
15890 | alt_howto.complain_on_overflow = complain; | |
15891 | howto = &alt_howto; | |
15892 | } | |
15893 | } | |
15894 | ||
a680de9a PB |
15895 | if (r_type == R_PPC64_REL16DX_HA) |
15896 | { | |
15897 | /* Split field reloc isn't handled by _bfd_final_link_relocate. */ | |
15898 | if (rel->r_offset + 4 > input_section->size) | |
15899 | r = bfd_reloc_outofrange; | |
15900 | else | |
15901 | { | |
15902 | relocation += addend; | |
15903 | relocation -= (rel->r_offset | |
15904 | + input_section->output_offset | |
15905 | + input_section->output_section->vma); | |
3de43e7b | 15906 | relocation = (bfd_signed_vma) relocation >> 16; |
a680de9a PB |
15907 | insn = bfd_get_32 (input_bfd, contents + rel->r_offset); |
15908 | insn &= ~0x1fffc1; | |
3de43e7b | 15909 | insn |= (relocation & 0xffc1) | ((relocation & 0x3e) << 15); |
a680de9a PB |
15910 | bfd_put_32 (input_bfd, insn, contents + rel->r_offset); |
15911 | r = bfd_reloc_ok; | |
3de43e7b | 15912 | if (relocation + 0x8000 > 0xffff) |
a680de9a PB |
15913 | r = bfd_reloc_overflow; |
15914 | } | |
15915 | } | |
15916 | else | |
15917 | r = _bfd_final_link_relocate (howto, input_bfd, input_section, contents, | |
15918 | rel->r_offset, relocation, addend); | |
5bd4f169 | 15919 | |
ef60b7ff | 15920 | if (r != bfd_reloc_ok) |
5bd4f169 | 15921 | { |
bc30df16 | 15922 | char *more_info = NULL; |
b80eed39 | 15923 | const char *reloc_name = howto->name; |
bc30df16 AM |
15924 | |
15925 | if (reloc_dest != DEST_NORMAL) | |
15926 | { | |
15927 | more_info = bfd_malloc (strlen (reloc_name) + 8); | |
15928 | if (more_info != NULL) | |
15929 | { | |
15930 | strcpy (more_info, reloc_name); | |
15931 | strcat (more_info, (reloc_dest == DEST_OPD | |
15932 | ? " (OPD)" : " (stub)")); | |
15933 | reloc_name = more_info; | |
15934 | } | |
15935 | } | |
15936 | ||
cd27b276 | 15937 | if (r == bfd_reloc_overflow) |
5bd4f169 | 15938 | { |
8131c122 AM |
15939 | /* On code like "if (foo) foo();" don't report overflow |
15940 | on a branch to zero when foo is undefined. */ | |
15941 | if (!warned | |
15942 | && (reloc_dest == DEST_STUB | |
15943 | || !(h != NULL | |
15944 | && (h->elf.root.type == bfd_link_hash_undefweak | |
15945 | || h->elf.root.type == bfd_link_hash_undefined) | |
15946 | && is_branch_reloc (r_type)))) | |
1a72702b AM |
15947 | info->callbacks->reloc_overflow (info, &h->elf.root, |
15948 | sym_name, reloc_name, | |
15949 | orig_rel.r_addend, | |
15950 | input_bfd, input_section, | |
15951 | rel->r_offset); | |
ef60b7ff AM |
15952 | } |
15953 | else | |
15954 | { | |
25f53a85 | 15955 | info->callbacks->einfo |
695344c0 | 15956 | /* xgettext:c-format */ |
c1c8c1ef | 15957 | (_("%H: %s against `%pT': error %d\n"), |
25f53a85 | 15958 | input_bfd, input_section, rel->r_offset, |
bc30df16 | 15959 | reloc_name, sym_name, (int) r); |
b34976b6 | 15960 | ret = FALSE; |
ef60b7ff | 15961 | } |
bc30df16 AM |
15962 | if (more_info != NULL) |
15963 | free (more_info); | |
5bd4f169 | 15964 | } |
c316a17c AM |
15965 | copy_reloc: |
15966 | if (wrel != rel) | |
15967 | *wrel = *rel; | |
15968 | } | |
15969 | ||
15970 | if (wrel != rel) | |
15971 | { | |
15972 | Elf_Internal_Shdr *rel_hdr; | |
15973 | size_t deleted = rel - wrel; | |
15974 | ||
15975 | rel_hdr = _bfd_elf_single_rel_hdr (input_section->output_section); | |
15976 | rel_hdr->sh_size -= rel_hdr->sh_entsize * deleted; | |
15977 | if (rel_hdr->sh_size == 0) | |
15978 | { | |
15979 | /* It is too late to remove an empty reloc section. Leave | |
15980 | one NONE reloc. | |
15981 | ??? What is wrong with an empty section??? */ | |
15982 | rel_hdr->sh_size = rel_hdr->sh_entsize; | |
15983 | deleted -= 1; | |
15984 | } | |
15985 | rel_hdr = _bfd_elf_single_rel_hdr (input_section); | |
15986 | rel_hdr->sh_size -= rel_hdr->sh_entsize * deleted; | |
15987 | input_section->reloc_count -= deleted; | |
5bd4f169 AM |
15988 | } |
15989 | ||
645ea6a9 AM |
15990 | /* If we're emitting relocations, then shortly after this function |
15991 | returns, reloc offsets and addends for this section will be | |
15992 | adjusted. Worse, reloc symbol indices will be for the output | |
8860955f AM |
15993 | file rather than the input. Save a copy of the relocs for |
15994 | opd_entry_value. */ | |
0e1862bb | 15995 | if (is_opd && (info->emitrelocations || bfd_link_relocatable (info))) |
8860955f AM |
15996 | { |
15997 | bfd_size_type amt; | |
15998 | amt = input_section->reloc_count * sizeof (Elf_Internal_Rela); | |
15999 | rel = bfd_alloc (input_bfd, amt); | |
729eabd5 AM |
16000 | BFD_ASSERT (ppc64_elf_tdata (input_bfd)->opd.relocs == NULL); |
16001 | ppc64_elf_tdata (input_bfd)->opd.relocs = rel; | |
8860955f AM |
16002 | if (rel == NULL) |
16003 | return FALSE; | |
16004 | memcpy (rel, relocs, amt); | |
16005 | } | |
5bd4f169 AM |
16006 | return ret; |
16007 | } | |
16008 | ||
754021d0 AM |
16009 | /* Adjust the value of any local symbols in opd sections. */ |
16010 | ||
6e0b88f1 | 16011 | static int |
754021d0 AM |
16012 | ppc64_elf_output_symbol_hook (struct bfd_link_info *info, |
16013 | const char *name ATTRIBUTE_UNUSED, | |
16014 | Elf_Internal_Sym *elfsym, | |
16015 | asection *input_sec, | |
16016 | struct elf_link_hash_entry *h) | |
16017 | { | |
74f0fb50 AM |
16018 | struct _opd_sec_data *opd; |
16019 | long adjust; | |
754021d0 AM |
16020 | bfd_vma value; |
16021 | ||
4025353c | 16022 | if (h != NULL) |
6e0b88f1 | 16023 | return 1; |
4025353c | 16024 | |
74f0fb50 AM |
16025 | opd = get_opd_info (input_sec); |
16026 | if (opd == NULL || opd->adjust == NULL) | |
6e0b88f1 | 16027 | return 1; |
754021d0 AM |
16028 | |
16029 | value = elfsym->st_value - input_sec->output_offset; | |
0e1862bb | 16030 | if (!bfd_link_relocatable (info)) |
754021d0 AM |
16031 | value -= input_sec->output_section->vma; |
16032 | ||
51aecdc5 | 16033 | adjust = opd->adjust[OPD_NDX (value)]; |
4025353c | 16034 | if (adjust == -1) |
6e0b88f1 AM |
16035 | return 2; |
16036 | ||
16037 | elfsym->st_value += adjust; | |
16038 | return 1; | |
754021d0 AM |
16039 | } |
16040 | ||
5bd4f169 AM |
16041 | /* Finish up dynamic symbol handling. We set the contents of various |
16042 | dynamic sections here. */ | |
16043 | ||
b34976b6 | 16044 | static bfd_boolean |
4ce794b7 AM |
16045 | ppc64_elf_finish_dynamic_symbol (bfd *output_bfd, |
16046 | struct bfd_link_info *info, | |
16047 | struct elf_link_hash_entry *h, | |
4aef7643 | 16048 | Elf_Internal_Sym *sym) |
5bd4f169 | 16049 | { |
65f38f15 | 16050 | struct ppc_link_hash_table *htab; |
8387904d | 16051 | struct plt_entry *ent; |
5bd4f169 | 16052 | |
65f38f15 | 16053 | htab = ppc_hash_table (info); |
4dfe6ac6 NC |
16054 | if (htab == NULL) |
16055 | return FALSE; | |
5bd4f169 | 16056 | |
49c09209 AM |
16057 | if (!htab->opd_abi && !h->def_regular) |
16058 | for (ent = h->plt.plist; ent != NULL; ent = ent->next) | |
16059 | if (ent->plt.offset != (bfd_vma) -1) | |
16060 | { | |
16061 | /* Mark the symbol as undefined, rather than as | |
16062 | defined in glink. Leave the value if there were | |
16063 | any relocations where pointer equality matters | |
16064 | (this is a clue for the dynamic linker, to make | |
16065 | function pointer comparisons work between an | |
16066 | application and shared library), otherwise set it | |
16067 | to zero. */ | |
16068 | sym->st_shndx = SHN_UNDEF; | |
16069 | if (!h->pointer_equality_needed) | |
16070 | sym->st_value = 0; | |
16071 | else if (!h->ref_regular_nonweak) | |
16072 | { | |
16073 | /* This breaks function pointer comparisons, but | |
16074 | that is better than breaking tests for a NULL | |
16075 | function pointer. */ | |
16076 | sym->st_value = 0; | |
16077 | } | |
16078 | break; | |
16079 | } | |
5bd4f169 | 16080 | |
f5385ebf | 16081 | if (h->needs_copy) |
5bd4f169 | 16082 | { |
65f38f15 | 16083 | /* This symbol needs a copy reloc. Set it up. */ |
49c09209 | 16084 | Elf_Internal_Rela rela; |
5474d94f | 16085 | asection *srel; |
49c09209 | 16086 | bfd_byte *loc; |
5bd4f169 | 16087 | |
65f38f15 AM |
16088 | if (h->dynindx == -1 |
16089 | || (h->root.type != bfd_link_hash_defined | |
16090 | && h->root.type != bfd_link_hash_defweak) | |
5474d94f AM |
16091 | || htab->elf.srelbss == NULL |
16092 | || htab->elf.sreldynrelro == NULL) | |
65f38f15 | 16093 | abort (); |
5bd4f169 AM |
16094 | |
16095 | rela.r_offset = (h->root.u.def.value | |
16096 | + h->root.u.def.section->output_section->vma | |
16097 | + h->root.u.def.section->output_offset); | |
16098 | rela.r_info = ELF64_R_INFO (h->dynindx, R_PPC64_COPY); | |
16099 | rela.r_addend = 0; | |
afbf7e8e | 16100 | if (h->root.u.def.section == htab->elf.sdynrelro) |
5474d94f AM |
16101 | srel = htab->elf.sreldynrelro; |
16102 | else | |
16103 | srel = htab->elf.srelbss; | |
16104 | loc = srel->contents; | |
16105 | loc += srel->reloc_count++ * sizeof (Elf64_External_Rela); | |
65f38f15 | 16106 | bfd_elf64_swap_reloca_out (output_bfd, &rela, loc); |
5bd4f169 AM |
16107 | } |
16108 | ||
b34976b6 | 16109 | return TRUE; |
5bd4f169 AM |
16110 | } |
16111 | ||
65f38f15 AM |
16112 | /* Used to decide how to sort relocs in an optimal manner for the |
16113 | dynamic linker, before writing them out. */ | |
16114 | ||
16115 | static enum elf_reloc_type_class | |
7e612e98 AM |
16116 | ppc64_elf_reloc_type_class (const struct bfd_link_info *info, |
16117 | const asection *rel_sec, | |
16118 | const Elf_Internal_Rela *rela) | |
65f38f15 | 16119 | { |
04c9666a | 16120 | enum elf_ppc64_reloc_type r_type; |
7e612e98 AM |
16121 | struct ppc_link_hash_table *htab = ppc_hash_table (info); |
16122 | ||
33e44f2e | 16123 | if (rel_sec == htab->elf.irelplt) |
7e612e98 | 16124 | return reloc_class_ifunc; |
a33d1f77 | 16125 | |
4ce794b7 | 16126 | r_type = ELF64_R_TYPE (rela->r_info); |
a33d1f77 | 16127 | switch (r_type) |
65f38f15 AM |
16128 | { |
16129 | case R_PPC64_RELATIVE: | |
16130 | return reloc_class_relative; | |
16131 | case R_PPC64_JMP_SLOT: | |
16132 | return reloc_class_plt; | |
16133 | case R_PPC64_COPY: | |
16134 | return reloc_class_copy; | |
16135 | default: | |
16136 | return reloc_class_normal; | |
16137 | } | |
16138 | } | |
16139 | ||
5bd4f169 AM |
16140 | /* Finish up the dynamic sections. */ |
16141 | ||
b34976b6 | 16142 | static bfd_boolean |
4ce794b7 AM |
16143 | ppc64_elf_finish_dynamic_sections (bfd *output_bfd, |
16144 | struct bfd_link_info *info) | |
5bd4f169 | 16145 | { |
65f38f15 AM |
16146 | struct ppc_link_hash_table *htab; |
16147 | bfd *dynobj; | |
5bd4f169 | 16148 | asection *sdyn; |
5bd4f169 | 16149 | |
65f38f15 | 16150 | htab = ppc_hash_table (info); |
4dfe6ac6 NC |
16151 | if (htab == NULL) |
16152 | return FALSE; | |
16153 | ||
65f38f15 | 16154 | dynobj = htab->elf.dynobj; |
3d4d4302 | 16155 | sdyn = bfd_get_linker_section (dynobj, ".dynamic"); |
5bd4f169 | 16156 | |
65f38f15 | 16157 | if (htab->elf.dynamic_sections_created) |
5bd4f169 | 16158 | { |
5bd4f169 AM |
16159 | Elf64_External_Dyn *dyncon, *dynconend; |
16160 | ||
33e44f2e | 16161 | if (sdyn == NULL || htab->elf.sgot == NULL) |
65f38f15 | 16162 | abort (); |
5bd4f169 AM |
16163 | |
16164 | dyncon = (Elf64_External_Dyn *) sdyn->contents; | |
eea6121a | 16165 | dynconend = (Elf64_External_Dyn *) (sdyn->contents + sdyn->size); |
5bd4f169 AM |
16166 | for (; dyncon < dynconend; dyncon++) |
16167 | { | |
16168 | Elf_Internal_Dyn dyn; | |
19397422 | 16169 | asection *s; |
5bd4f169 AM |
16170 | |
16171 | bfd_elf64_swap_dyn_in (dynobj, dyncon, &dyn); | |
16172 | ||
16173 | switch (dyn.d_tag) | |
16174 | { | |
65f38f15 AM |
16175 | default: |
16176 | continue; | |
5bd4f169 | 16177 | |
5d1634d7 | 16178 | case DT_PPC64_GLINK: |
4ce794b7 | 16179 | s = htab->glink; |
6348e046 | 16180 | dyn.d_un.d_ptr = s->output_section->vma + s->output_offset; |
ad8e1ba5 AM |
16181 | /* We stupidly defined DT_PPC64_GLINK to be the start |
16182 | of glink rather than the first entry point, which is | |
16183 | what ld.so needs, and now have a bigger stub to | |
16184 | support automatic multiple TOCs. */ | |
9e390558 | 16185 | dyn.d_un.d_ptr += GLINK_PLTRESOLVE_SIZE (htab) - 8 * 4; |
5d1634d7 AM |
16186 | break; |
16187 | ||
19397422 AM |
16188 | case DT_PPC64_OPD: |
16189 | s = bfd_get_section_by_name (output_bfd, ".opd"); | |
6348e046 AM |
16190 | if (s == NULL) |
16191 | continue; | |
16192 | dyn.d_un.d_ptr = s->vma; | |
19397422 AM |
16193 | break; |
16194 | ||
e8910a83 AM |
16195 | case DT_PPC64_OPT: |
16196 | if (htab->do_multi_toc && htab->multi_toc_needed) | |
16197 | dyn.d_un.d_val |= PPC64_OPT_MULTI_TOC; | |
f378ab09 AM |
16198 | if (htab->has_plt_localentry0) |
16199 | dyn.d_un.d_val |= PPC64_OPT_LOCALENTRY; | |
e8910a83 AM |
16200 | break; |
16201 | ||
19397422 AM |
16202 | case DT_PPC64_OPDSZ: |
16203 | s = bfd_get_section_by_name (output_bfd, ".opd"); | |
6348e046 AM |
16204 | if (s == NULL) |
16205 | continue; | |
eea6121a | 16206 | dyn.d_un.d_val = s->size; |
19397422 AM |
16207 | break; |
16208 | ||
65f38f15 | 16209 | case DT_PLTGOT: |
33e44f2e | 16210 | s = htab->elf.splt; |
6348e046 | 16211 | dyn.d_un.d_ptr = s->output_section->vma + s->output_offset; |
65f38f15 AM |
16212 | break; |
16213 | ||
16214 | case DT_JMPREL: | |
33e44f2e | 16215 | s = htab->elf.srelplt; |
6348e046 | 16216 | dyn.d_un.d_ptr = s->output_section->vma + s->output_offset; |
65f38f15 | 16217 | break; |
5bd4f169 | 16218 | |
65f38f15 | 16219 | case DT_PLTRELSZ: |
33e44f2e | 16220 | dyn.d_un.d_val = htab->elf.srelplt->size; |
5d1634d7 | 16221 | break; |
82e66161 AM |
16222 | |
16223 | case DT_TEXTREL: | |
16224 | if (htab->local_ifunc_resolver) | |
16225 | info->callbacks->einfo | |
16226 | (_("%X%P: text relocations and GNU indirect " | |
16227 | "functions will result in a segfault at runtime\n")); | |
16228 | else if (htab->maybe_local_ifunc_resolver) | |
16229 | info->callbacks->einfo | |
16230 | (_("%P: warning: text relocations and GNU indirect " | |
16231 | "functions may result in a segfault at runtime\n")); | |
16232 | continue; | |
5bd4f169 | 16233 | } |
5bd4f169 | 16234 | |
65f38f15 | 16235 | bfd_elf64_swap_dyn_out (output_bfd, &dyn, dyncon); |
5bd4f169 | 16236 | } |
5bd4f169 AM |
16237 | } |
16238 | ||
6528b6eb AM |
16239 | if (htab->elf.sgot != NULL && htab->elf.sgot->size != 0 |
16240 | && htab->elf.sgot->output_section != bfd_abs_section_ptr) | |
5d1634d7 AM |
16241 | { |
16242 | /* Fill in the first entry in the global offset table. | |
16243 | We use it to hold the link-time TOCbase. */ | |
16244 | bfd_put_64 (output_bfd, | |
60ee0d4a | 16245 | elf_gp (output_bfd) + TOC_BASE_OFF, |
33e44f2e | 16246 | htab->elf.sgot->contents); |
5d1634d7 AM |
16247 | |
16248 | /* Set .got entry size. */ | |
33e44f2e | 16249 | elf_section_data (htab->elf.sgot->output_section)->this_hdr.sh_entsize = 8; |
5d1634d7 AM |
16250 | } |
16251 | ||
6528b6eb AM |
16252 | if (htab->elf.splt != NULL && htab->elf.splt->size != 0 |
16253 | && htab->elf.splt->output_section != bfd_abs_section_ptr) | |
5d1634d7 AM |
16254 | { |
16255 | /* Set .plt entry size. */ | |
33e44f2e | 16256 | elf_section_data (htab->elf.splt->output_section)->this_hdr.sh_entsize |
b9e5796b | 16257 | = PLT_ENTRY_SIZE (htab); |
5d1634d7 AM |
16258 | } |
16259 | ||
84f5d08e AM |
16260 | /* brlt is SEC_LINKER_CREATED, so we need to write out relocs for |
16261 | brlt ourselves if emitrelocations. */ | |
16262 | if (htab->brlt != NULL | |
16263 | && htab->brlt->reloc_count != 0 | |
16264 | && !_bfd_elf_link_output_relocs (output_bfd, | |
16265 | htab->brlt, | |
d4730f92 | 16266 | elf_section_data (htab->brlt)->rela.hdr, |
84f5d08e AM |
16267 | elf_section_data (htab->brlt)->relocs, |
16268 | NULL)) | |
16269 | return FALSE; | |
16270 | ||
176a0d42 AM |
16271 | if (htab->glink != NULL |
16272 | && htab->glink->reloc_count != 0 | |
16273 | && !_bfd_elf_link_output_relocs (output_bfd, | |
16274 | htab->glink, | |
d4730f92 | 16275 | elf_section_data (htab->glink)->rela.hdr, |
176a0d42 AM |
16276 | elf_section_data (htab->glink)->relocs, |
16277 | NULL)) | |
16278 | return FALSE; | |
16279 | ||
58d180e8 | 16280 | if (htab->glink_eh_frame != NULL |
da44f4e5 AM |
16281 | && htab->glink_eh_frame->size != 0) |
16282 | { | |
16283 | bfd_vma val; | |
16284 | bfd_byte *p; | |
d4aaa2a0 | 16285 | struct map_stub *group; |
2e0ce1c8 | 16286 | size_t align = 4; |
da44f4e5 | 16287 | |
2e0ce1c8 AM |
16288 | p = htab->glink_eh_frame->contents; |
16289 | p += (sizeof (glink_eh_frame_cie) + align - 1) & -align; | |
d4aaa2a0 AM |
16290 | |
16291 | for (group = htab->group; group != NULL; group = group->next) | |
16292 | if (group->stub_sec != NULL) | |
da44f4e5 | 16293 | { |
da44f4e5 | 16294 | /* Offset to stub section. */ |
d4aaa2a0 AM |
16295 | val = (group->stub_sec->output_section->vma |
16296 | + group->stub_sec->output_offset); | |
da44f4e5 AM |
16297 | val -= (htab->glink_eh_frame->output_section->vma |
16298 | + htab->glink_eh_frame->output_offset | |
d4aaa2a0 | 16299 | + (p + 8 - htab->glink_eh_frame->contents)); |
da44f4e5 AM |
16300 | if (val + 0x80000000 > 0xffffffff) |
16301 | { | |
cf97bcb0 AM |
16302 | _bfd_error_handler |
16303 | (_("%s offset too large for .eh_frame sdata4 encoding"), | |
d4aaa2a0 | 16304 | group->stub_sec->name); |
da44f4e5 AM |
16305 | return FALSE; |
16306 | } | |
d4aaa2a0 AM |
16307 | bfd_put_32 (dynobj, val, p + 8); |
16308 | p += stub_eh_frame_size (group, align); | |
da44f4e5 AM |
16309 | } |
16310 | if (htab->glink != NULL && htab->glink->size != 0) | |
16311 | { | |
da44f4e5 AM |
16312 | /* Offset to .glink. */ |
16313 | val = (htab->glink->output_section->vma | |
16314 | + htab->glink->output_offset | |
16315 | + 8); | |
16316 | val -= (htab->glink_eh_frame->output_section->vma | |
16317 | + htab->glink_eh_frame->output_offset | |
d4aaa2a0 | 16318 | + (p + 8 - htab->glink_eh_frame->contents)); |
da44f4e5 AM |
16319 | if (val + 0x80000000 > 0xffffffff) |
16320 | { | |
cf97bcb0 AM |
16321 | _bfd_error_handler |
16322 | (_("%s offset too large for .eh_frame sdata4 encoding"), | |
da44f4e5 AM |
16323 | htab->glink->name); |
16324 | return FALSE; | |
16325 | } | |
d4aaa2a0 AM |
16326 | bfd_put_32 (dynobj, val, p + 8); |
16327 | p += (24 + align - 1) & -align; | |
da44f4e5 AM |
16328 | } |
16329 | ||
16330 | if (htab->glink_eh_frame->sec_info_type == SEC_INFO_TYPE_EH_FRAME | |
16331 | && !_bfd_elf_write_section_eh_frame (output_bfd, info, | |
16332 | htab->glink_eh_frame, | |
16333 | htab->glink_eh_frame->contents)) | |
16334 | return FALSE; | |
16335 | } | |
58d180e8 | 16336 | |
e717da7e | 16337 | /* We need to handle writing out multiple GOT sections ourselves, |
7b53ace3 AM |
16338 | since we didn't add them to DYNOBJ. We know dynobj is the first |
16339 | bfd. */ | |
c72f2fb2 | 16340 | while ((dynobj = dynobj->link.next) != NULL) |
e717da7e AM |
16341 | { |
16342 | asection *s; | |
7b53ace3 | 16343 | |
0c8d6e5c | 16344 | if (!is_ppc64_elf (dynobj)) |
7b53ace3 AM |
16345 | continue; |
16346 | ||
e717da7e AM |
16347 | s = ppc64_elf_tdata (dynobj)->got; |
16348 | if (s != NULL | |
eea6121a | 16349 | && s->size != 0 |
e717da7e AM |
16350 | && s->output_section != bfd_abs_section_ptr |
16351 | && !bfd_set_section_contents (output_bfd, s->output_section, | |
16352 | s->contents, s->output_offset, | |
eea6121a | 16353 | s->size)) |
e717da7e AM |
16354 | return FALSE; |
16355 | s = ppc64_elf_tdata (dynobj)->relgot; | |
16356 | if (s != NULL | |
eea6121a | 16357 | && s->size != 0 |
e717da7e AM |
16358 | && s->output_section != bfd_abs_section_ptr |
16359 | && !bfd_set_section_contents (output_bfd, s->output_section, | |
16360 | s->contents, s->output_offset, | |
eea6121a | 16361 | s->size)) |
e717da7e AM |
16362 | return FALSE; |
16363 | } | |
f6c52c13 | 16364 | |
b34976b6 | 16365 | return TRUE; |
5bd4f169 AM |
16366 | } |
16367 | ||
5bd4f169 | 16368 | #include "elf64-target.h" |
7b8e7dad AM |
16369 | |
16370 | /* FreeBSD support */ | |
16371 | ||
16372 | #undef TARGET_LITTLE_SYM | |
16373 | #undef TARGET_LITTLE_NAME | |
16374 | ||
16375 | #undef TARGET_BIG_SYM | |
6d00b590 | 16376 | #define TARGET_BIG_SYM powerpc_elf64_fbsd_vec |
7b8e7dad AM |
16377 | #undef TARGET_BIG_NAME |
16378 | #define TARGET_BIG_NAME "elf64-powerpc-freebsd" | |
16379 | ||
16380 | #undef ELF_OSABI | |
16381 | #define ELF_OSABI ELFOSABI_FREEBSD | |
16382 | ||
16383 | #undef elf64_bed | |
16384 | #define elf64_bed elf64_powerpc_fbsd_bed | |
16385 | ||
16386 | #include "elf64-target.h" |