Commit | Line | Data |
---|---|---|
5bd4f169 | 1 | /* PowerPC64-specific support for 64-bit ELF. |
84f5d08e | 2 | Copyright 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007 |
b2a8e766 | 3 | Free Software Foundation, Inc. |
5bd4f169 AM |
4 | Written by Linus Nordberg, Swox AB <info@swox.com>, |
5 | based on elf32-ppc.c by Ian Lance Taylor. | |
d37c89e5 | 6 | Largely rewritten by Alan Modra <amodra@bigpond.net.au> |
5bd4f169 | 7 | |
ae9a127f | 8 | This file is part of BFD, the Binary File Descriptor library. |
5bd4f169 | 9 | |
ae9a127f NC |
10 | This program is free software; you can redistribute it and/or modify |
11 | it under the terms of the GNU General Public License as published by | |
12 | the Free Software Foundation; either version 2 of the License, or | |
13 | (at your option) any later version. | |
5bd4f169 | 14 | |
ae9a127f NC |
15 | This program is distributed in the hope that it will be useful, |
16 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
17 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
18 | GNU General Public License for more details. | |
5bd4f169 | 19 | |
4ce794b7 AM |
20 | You should have received a copy of the GNU General Public License along |
21 | with this program; if not, write to the Free Software Foundation, Inc., | |
3e110533 | 22 | 51 Franklin Street - Fifth Floor, Boston, MA 02110-1301, USA. */ |
5bd4f169 | 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 | |
183e98be | 28 | #include <stdarg.h> |
5bd4f169 AM |
29 | #include "bfd.h" |
30 | #include "sysdep.h" | |
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" |
5bd4f169 | 36 | |
805fc799 | 37 | static bfd_reloc_status_type ppc64_elf_ha_reloc |
4ce794b7 | 38 | (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **); |
2441e016 AM |
39 | static bfd_reloc_status_type ppc64_elf_branch_reloc |
40 | (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **); | |
805fc799 | 41 | static bfd_reloc_status_type ppc64_elf_brtaken_reloc |
4ce794b7 | 42 | (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **); |
805fc799 | 43 | static bfd_reloc_status_type ppc64_elf_sectoff_reloc |
4ce794b7 | 44 | (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **); |
805fc799 | 45 | static bfd_reloc_status_type ppc64_elf_sectoff_ha_reloc |
4ce794b7 | 46 | (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **); |
805fc799 | 47 | static bfd_reloc_status_type ppc64_elf_toc_reloc |
4ce794b7 | 48 | (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **); |
805fc799 | 49 | static bfd_reloc_status_type ppc64_elf_toc_ha_reloc |
4ce794b7 | 50 | (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **); |
805fc799 | 51 | static bfd_reloc_status_type ppc64_elf_toc64_reloc |
4ce794b7 | 52 | (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **); |
805fc799 | 53 | static bfd_reloc_status_type ppc64_elf_unhandled_reloc |
4ce794b7 | 54 | (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **); |
2441e016 AM |
55 | static bfd_vma opd_entry_value |
56 | (asection *, bfd_vma, asection **, bfd_vma *); | |
5bd4f169 | 57 | |
ad8e1ba5 AM |
58 | #define TARGET_LITTLE_SYM bfd_elf64_powerpcle_vec |
59 | #define TARGET_LITTLE_NAME "elf64-powerpcle" | |
60 | #define TARGET_BIG_SYM bfd_elf64_powerpc_vec | |
61 | #define TARGET_BIG_NAME "elf64-powerpc" | |
62 | #define ELF_ARCH bfd_arch_powerpc | |
63 | #define ELF_MACHINE_CODE EM_PPC64 | |
64 | #define ELF_MAXPAGESIZE 0x10000 | |
24718e3b | 65 | #define ELF_COMMONPAGESIZE 0x1000 |
ad8e1ba5 AM |
66 | #define elf_info_to_howto ppc64_elf_info_to_howto |
67 | ||
68 | #define elf_backend_want_got_sym 0 | |
69 | #define elf_backend_want_plt_sym 0 | |
70 | #define elf_backend_plt_alignment 3 | |
71 | #define elf_backend_plt_not_loaded 1 | |
ad8e1ba5 | 72 | #define elf_backend_got_header_size 8 |
ad8e1ba5 AM |
73 | #define elf_backend_can_gc_sections 1 |
74 | #define elf_backend_can_refcount 1 | |
75 | #define elf_backend_rela_normal 1 | |
6bfdb61b | 76 | #define elf_backend_default_execstack 0 |
ad8e1ba5 | 77 | |
e717da7e | 78 | #define bfd_elf64_mkobject ppc64_elf_mkobject |
ad8e1ba5 AM |
79 | #define bfd_elf64_bfd_reloc_type_lookup ppc64_elf_reloc_type_lookup |
80 | #define bfd_elf64_bfd_merge_private_bfd_data ppc64_elf_merge_private_bfd_data | |
81 | #define bfd_elf64_new_section_hook ppc64_elf_new_section_hook | |
82 | #define bfd_elf64_bfd_link_hash_table_create ppc64_elf_link_hash_table_create | |
83 | #define bfd_elf64_bfd_link_hash_table_free ppc64_elf_link_hash_table_free | |
90e3cdf2 | 84 | #define bfd_elf64_get_synthetic_symtab ppc64_elf_get_synthetic_symtab |
ad8e1ba5 AM |
85 | |
86 | #define elf_backend_object_p ppc64_elf_object_p | |
d37c89e5 AM |
87 | #define elf_backend_grok_prstatus ppc64_elf_grok_prstatus |
88 | #define elf_backend_grok_psinfo ppc64_elf_grok_psinfo | |
183e98be | 89 | #define elf_backend_write_core_note ppc64_elf_write_core_note |
ad8e1ba5 AM |
90 | #define elf_backend_create_dynamic_sections ppc64_elf_create_dynamic_sections |
91 | #define elf_backend_copy_indirect_symbol ppc64_elf_copy_indirect_symbol | |
555cd476 | 92 | #define elf_backend_add_symbol_hook ppc64_elf_add_symbol_hook |
8387904d | 93 | #define elf_backend_check_directives ppc64_elf_check_directives |
97fed1c9 | 94 | #define elf_backend_as_needed_cleanup ppc64_elf_as_needed_cleanup |
8387904d | 95 | #define elf_backend_archive_symbol_lookup ppc64_elf_archive_symbol_lookup |
ad8e1ba5 | 96 | #define elf_backend_check_relocs ppc64_elf_check_relocs |
64d03ab5 | 97 | #define elf_backend_gc_mark_dynamic_ref ppc64_elf_gc_mark_dynamic_ref |
ad8e1ba5 AM |
98 | #define elf_backend_gc_mark_hook ppc64_elf_gc_mark_hook |
99 | #define elf_backend_gc_sweep_hook ppc64_elf_gc_sweep_hook | |
100 | #define elf_backend_adjust_dynamic_symbol ppc64_elf_adjust_dynamic_symbol | |
101 | #define elf_backend_hide_symbol ppc64_elf_hide_symbol | |
102 | #define elf_backend_always_size_sections ppc64_elf_func_desc_adjust | |
103 | #define elf_backend_size_dynamic_sections ppc64_elf_size_dynamic_sections | |
74541ad4 | 104 | #define elf_backend_init_index_section _bfd_elf_init_2_index_sections |
60124e18 | 105 | #define elf_backend_action_discarded ppc64_elf_action_discarded |
ad8e1ba5 AM |
106 | #define elf_backend_relocate_section ppc64_elf_relocate_section |
107 | #define elf_backend_finish_dynamic_symbol ppc64_elf_finish_dynamic_symbol | |
108 | #define elf_backend_reloc_type_class ppc64_elf_reloc_type_class | |
109 | #define elf_backend_finish_dynamic_sections ppc64_elf_finish_dynamic_sections | |
754021d0 | 110 | #define elf_backend_link_output_symbol_hook ppc64_elf_output_symbol_hook |
29ef7005 | 111 | #define elf_backend_special_sections ppc64_elf_special_sections |
ad8e1ba5 | 112 | |
5bd4f169 AM |
113 | /* The name of the dynamic interpreter. This is put in the .interp |
114 | section. */ | |
115 | #define ELF_DYNAMIC_INTERPRETER "/usr/lib/ld.so.1" | |
116 | ||
117 | /* The size in bytes of an entry in the procedure linkage table. */ | |
118 | #define PLT_ENTRY_SIZE 24 | |
119 | ||
120 | /* The initial size of the plt reserved for the dynamic linker. */ | |
5d1634d7 | 121 | #define PLT_INITIAL_ENTRY_SIZE PLT_ENTRY_SIZE |
5bd4f169 AM |
122 | |
123 | /* TOC base pointers offset from start of TOC. */ | |
411e1bfb AM |
124 | #define TOC_BASE_OFF 0x8000 |
125 | ||
126 | /* Offset of tp and dtp pointers from start of TLS block. */ | |
127 | #define TP_OFFSET 0x7000 | |
128 | #define DTP_OFFSET 0x8000 | |
5bd4f169 | 129 | |
ad8e1ba5 AM |
130 | /* .plt call stub instructions. The normal stub is like this, but |
131 | sometimes the .plt entry crosses a 64k boundary and we need to | |
132 | insert an addis to adjust r12. */ | |
133 | #define PLT_CALL_STUB_SIZE (7*4) | |
5d1634d7 AM |
134 | #define ADDIS_R12_R2 0x3d820000 /* addis %r12,%r2,xxx@ha */ |
135 | #define STD_R2_40R1 0xf8410028 /* std %r2,40(%r1) */ | |
136 | #define LD_R11_0R12 0xe96c0000 /* ld %r11,xxx+0@l(%r12) */ | |
137 | #define LD_R2_0R12 0xe84c0000 /* ld %r2,xxx+8@l(%r12) */ | |
138 | #define MTCTR_R11 0x7d6903a6 /* mtctr %r11 */ | |
139 | /* ld %r11,xxx+16@l(%r12) */ | |
140 | #define BCTR 0x4e800420 /* bctr */ | |
141 | ||
5d1634d7 | 142 | |
ee4bf8d2 | 143 | #define ADDIS_R12_R12 0x3d8c0000 /* addis %r12,%r12,off@ha */ |
ad8e1ba5 AM |
144 | #define ADDIS_R2_R2 0x3c420000 /* addis %r2,%r2,off@ha */ |
145 | #define ADDI_R2_R2 0x38420000 /* addi %r2,%r2,off@l */ | |
146 | ||
147 | #define LD_R2_40R1 0xe8410028 /* ld %r2,40(%r1) */ | |
148 | ||
ee4bf8d2 | 149 | /* glink call stub instructions. We enter with the index in R0. */ |
ad8e1ba5 | 150 | #define GLINK_CALL_STUB_SIZE (16*4) |
ee4bf8d2 AM |
151 | /* 0: */ |
152 | /* .quad plt0-1f */ | |
153 | /* __glink: */ | |
154 | #define MFLR_R12 0x7d8802a6 /* mflr %12 */ | |
155 | #define BCL_20_31 0x429f0005 /* bcl 20,31,1f */ | |
156 | /* 1: */ | |
157 | #define MFLR_R11 0x7d6802a6 /* mflr %11 */ | |
158 | #define LD_R2_M16R11 0xe84bfff0 /* ld %2,(0b-1b)(%11) */ | |
159 | #define MTLR_R12 0x7d8803a6 /* mtlr %12 */ | |
160 | #define ADD_R12_R2_R11 0x7d825a14 /* add %12,%2,%11 */ | |
161 | /* ld %11,0(%12) */ | |
162 | /* ld %2,8(%12) */ | |
163 | /* mtctr %11 */ | |
164 | /* ld %11,16(%12) */ | |
165 | /* bctr */ | |
5d1634d7 AM |
166 | |
167 | /* Pad with this. */ | |
168 | #define NOP 0x60000000 | |
169 | ||
721956f4 AM |
170 | /* Some other nops. */ |
171 | #define CROR_151515 0x4def7b82 | |
172 | #define CROR_313131 0x4ffffb82 | |
173 | ||
cedb70c5 | 174 | /* .glink entries for the first 32k functions are two instructions. */ |
5d1634d7 AM |
175 | #define LI_R0_0 0x38000000 /* li %r0,0 */ |
176 | #define B_DOT 0x48000000 /* b . */ | |
177 | ||
178 | /* After that, we need two instructions to load the index, followed by | |
179 | a branch. */ | |
180 | #define LIS_R0_0 0x3c000000 /* lis %r0,0 */ | |
10ed1bba | 181 | #define ORI_R0_R0_0 0x60000000 /* ori %r0,%r0,0 */ |
41bd81ab | 182 | |
deb0e272 AM |
183 | /* Instructions used by the save and restore reg functions. */ |
184 | #define STD_R0_0R1 0xf8010000 /* std %r0,0(%r1) */ | |
185 | #define STD_R0_0R12 0xf80c0000 /* std %r0,0(%r12) */ | |
186 | #define LD_R0_0R1 0xe8010000 /* ld %r0,0(%r1) */ | |
187 | #define LD_R0_0R12 0xe80c0000 /* ld %r0,0(%r12) */ | |
82bd7b59 AM |
188 | #define STFD_FR0_0R1 0xd8010000 /* stfd %fr0,0(%r1) */ |
189 | #define LFD_FR0_0R1 0xc8010000 /* lfd %fr0,0(%r1) */ | |
deb0e272 AM |
190 | #define LI_R12_0 0x39800000 /* li %r12,0 */ |
191 | #define STVX_VR0_R12_R0 0x7c0c01ce /* stvx %v0,%r12,%r0 */ | |
192 | #define LVX_VR0_R12_R0 0x7c0c00ce /* lvx %v0,%r12,%r0 */ | |
193 | #define MTLR_R0 0x7c0803a6 /* mtlr %r0 */ | |
82bd7b59 AM |
194 | #define BLR 0x4e800020 /* blr */ |
195 | ||
41bd81ab AM |
196 | /* Since .opd is an array of descriptors and each entry will end up |
197 | with identical R_PPC64_RELATIVE relocs, there is really no need to | |
198 | propagate .opd relocs; The dynamic linker should be taught to | |
1e2f5b6e | 199 | relocate .opd without reloc entries. */ |
41bd81ab AM |
200 | #ifndef NO_OPD_RELOCS |
201 | #define NO_OPD_RELOCS 0 | |
202 | #endif | |
5bd4f169 | 203 | \f |
f5e87a1d | 204 | #define ONES(n) (((bfd_vma) 1 << ((n) - 1) << 1) - 1) |
b34976b6 | 205 | |
5bd4f169 | 206 | /* Relocation HOWTO's. */ |
04c9666a | 207 | static reloc_howto_type *ppc64_elf_howto_table[(int) R_PPC64_max]; |
5bd4f169 AM |
208 | |
209 | static reloc_howto_type ppc64_elf_howto_raw[] = { | |
210 | /* This reloc does nothing. */ | |
211 | HOWTO (R_PPC64_NONE, /* type */ | |
212 | 0, /* rightshift */ | |
411e1bfb AM |
213 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
214 | 32, /* bitsize */ | |
b34976b6 | 215 | FALSE, /* pc_relative */ |
5bd4f169 | 216 | 0, /* bitpos */ |
f5e87a1d | 217 | complain_overflow_dont, /* complain_on_overflow */ |
5bd4f169 AM |
218 | bfd_elf_generic_reloc, /* special_function */ |
219 | "R_PPC64_NONE", /* name */ | |
b34976b6 | 220 | FALSE, /* partial_inplace */ |
d006db6c | 221 | 0, /* src_mask */ |
5bd4f169 | 222 | 0, /* dst_mask */ |
b34976b6 | 223 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
224 | |
225 | /* A standard 32 bit relocation. */ | |
226 | HOWTO (R_PPC64_ADDR32, /* type */ | |
227 | 0, /* rightshift */ | |
228 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
229 | 32, /* bitsize */ | |
b34976b6 | 230 | FALSE, /* pc_relative */ |
5bd4f169 AM |
231 | 0, /* bitpos */ |
232 | complain_overflow_bitfield, /* complain_on_overflow */ | |
233 | bfd_elf_generic_reloc, /* special_function */ | |
234 | "R_PPC64_ADDR32", /* name */ | |
b34976b6 | 235 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
236 | 0, /* src_mask */ |
237 | 0xffffffff, /* dst_mask */ | |
b34976b6 | 238 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
239 | |
240 | /* An absolute 26 bit branch; the lower two bits must be zero. | |
241 | FIXME: we don't check that, we just clear them. */ | |
242 | HOWTO (R_PPC64_ADDR24, /* type */ | |
243 | 0, /* rightshift */ | |
244 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
245 | 26, /* bitsize */ | |
b34976b6 | 246 | FALSE, /* pc_relative */ |
5bd4f169 AM |
247 | 0, /* bitpos */ |
248 | complain_overflow_bitfield, /* complain_on_overflow */ | |
249 | bfd_elf_generic_reloc, /* special_function */ | |
250 | "R_PPC64_ADDR24", /* name */ | |
b34976b6 | 251 | FALSE, /* partial_inplace */ |
d006db6c | 252 | 0, /* src_mask */ |
f5e87a1d | 253 | 0x03fffffc, /* dst_mask */ |
b34976b6 | 254 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
255 | |
256 | /* A standard 16 bit relocation. */ | |
257 | HOWTO (R_PPC64_ADDR16, /* type */ | |
258 | 0, /* rightshift */ | |
259 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
260 | 16, /* bitsize */ | |
b34976b6 | 261 | FALSE, /* pc_relative */ |
5bd4f169 AM |
262 | 0, /* bitpos */ |
263 | complain_overflow_bitfield, /* complain_on_overflow */ | |
264 | bfd_elf_generic_reloc, /* special_function */ | |
265 | "R_PPC64_ADDR16", /* name */ | |
b34976b6 | 266 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
267 | 0, /* src_mask */ |
268 | 0xffff, /* dst_mask */ | |
b34976b6 | 269 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
270 | |
271 | /* A 16 bit relocation without overflow. */ | |
272 | HOWTO (R_PPC64_ADDR16_LO, /* type */ | |
273 | 0, /* rightshift */ | |
274 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
275 | 16, /* bitsize */ | |
b34976b6 | 276 | FALSE, /* pc_relative */ |
5bd4f169 AM |
277 | 0, /* bitpos */ |
278 | complain_overflow_dont,/* complain_on_overflow */ | |
279 | bfd_elf_generic_reloc, /* special_function */ | |
280 | "R_PPC64_ADDR16_LO", /* name */ | |
b34976b6 | 281 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
282 | 0, /* src_mask */ |
283 | 0xffff, /* dst_mask */ | |
b34976b6 | 284 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
285 | |
286 | /* Bits 16-31 of an address. */ | |
287 | HOWTO (R_PPC64_ADDR16_HI, /* type */ | |
288 | 16, /* rightshift */ | |
289 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
290 | 16, /* bitsize */ | |
b34976b6 | 291 | FALSE, /* pc_relative */ |
5bd4f169 AM |
292 | 0, /* bitpos */ |
293 | complain_overflow_dont, /* complain_on_overflow */ | |
294 | bfd_elf_generic_reloc, /* special_function */ | |
295 | "R_PPC64_ADDR16_HI", /* name */ | |
b34976b6 | 296 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
297 | 0, /* src_mask */ |
298 | 0xffff, /* dst_mask */ | |
b34976b6 | 299 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
300 | |
301 | /* Bits 16-31 of an address, plus 1 if the contents of the low 16 | |
302 | bits, treated as a signed number, is negative. */ | |
303 | HOWTO (R_PPC64_ADDR16_HA, /* type */ | |
304 | 16, /* rightshift */ | |
305 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
306 | 16, /* bitsize */ | |
b34976b6 | 307 | FALSE, /* pc_relative */ |
5bd4f169 AM |
308 | 0, /* bitpos */ |
309 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 310 | ppc64_elf_ha_reloc, /* special_function */ |
5bd4f169 | 311 | "R_PPC64_ADDR16_HA", /* name */ |
b34976b6 | 312 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
313 | 0, /* src_mask */ |
314 | 0xffff, /* dst_mask */ | |
b34976b6 | 315 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
316 | |
317 | /* An absolute 16 bit branch; the lower two bits must be zero. | |
318 | FIXME: we don't check that, we just clear them. */ | |
319 | HOWTO (R_PPC64_ADDR14, /* type */ | |
320 | 0, /* rightshift */ | |
321 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
322 | 16, /* bitsize */ | |
b34976b6 | 323 | FALSE, /* pc_relative */ |
5bd4f169 AM |
324 | 0, /* bitpos */ |
325 | complain_overflow_bitfield, /* complain_on_overflow */ | |
2441e016 | 326 | ppc64_elf_branch_reloc, /* special_function */ |
5bd4f169 | 327 | "R_PPC64_ADDR14", /* name */ |
b34976b6 | 328 | FALSE, /* partial_inplace */ |
d006db6c | 329 | 0, /* src_mask */ |
f5e87a1d | 330 | 0x0000fffc, /* dst_mask */ |
b34976b6 | 331 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
332 | |
333 | /* An absolute 16 bit branch, for which bit 10 should be set to | |
334 | indicate that the branch is expected to be taken. The lower two | |
335 | bits must be zero. */ | |
336 | HOWTO (R_PPC64_ADDR14_BRTAKEN, /* type */ | |
337 | 0, /* rightshift */ | |
338 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
339 | 16, /* bitsize */ | |
b34976b6 | 340 | FALSE, /* pc_relative */ |
5bd4f169 AM |
341 | 0, /* bitpos */ |
342 | complain_overflow_bitfield, /* complain_on_overflow */ | |
805fc799 | 343 | ppc64_elf_brtaken_reloc, /* special_function */ |
5bd4f169 | 344 | "R_PPC64_ADDR14_BRTAKEN",/* name */ |
b34976b6 | 345 | FALSE, /* partial_inplace */ |
d006db6c | 346 | 0, /* src_mask */ |
f5e87a1d | 347 | 0x0000fffc, /* dst_mask */ |
b34976b6 | 348 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
349 | |
350 | /* An absolute 16 bit branch, for which bit 10 should be set to | |
351 | indicate that the branch is not expected to be taken. The lower | |
352 | two bits must be zero. */ | |
353 | HOWTO (R_PPC64_ADDR14_BRNTAKEN, /* type */ | |
354 | 0, /* rightshift */ | |
355 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
356 | 16, /* bitsize */ | |
b34976b6 | 357 | FALSE, /* pc_relative */ |
5bd4f169 AM |
358 | 0, /* bitpos */ |
359 | complain_overflow_bitfield, /* complain_on_overflow */ | |
805fc799 | 360 | ppc64_elf_brtaken_reloc, /* special_function */ |
5bd4f169 | 361 | "R_PPC64_ADDR14_BRNTAKEN",/* name */ |
b34976b6 | 362 | FALSE, /* partial_inplace */ |
d006db6c | 363 | 0, /* src_mask */ |
f5e87a1d | 364 | 0x0000fffc, /* dst_mask */ |
b34976b6 | 365 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
366 | |
367 | /* A relative 26 bit branch; the lower two bits must be zero. */ | |
368 | HOWTO (R_PPC64_REL24, /* type */ | |
369 | 0, /* rightshift */ | |
370 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
371 | 26, /* bitsize */ | |
b34976b6 | 372 | TRUE, /* pc_relative */ |
5bd4f169 AM |
373 | 0, /* bitpos */ |
374 | complain_overflow_signed, /* complain_on_overflow */ | |
2441e016 | 375 | ppc64_elf_branch_reloc, /* special_function */ |
5bd4f169 | 376 | "R_PPC64_REL24", /* name */ |
b34976b6 | 377 | FALSE, /* partial_inplace */ |
d006db6c | 378 | 0, /* src_mask */ |
f5e87a1d | 379 | 0x03fffffc, /* dst_mask */ |
b34976b6 | 380 | TRUE), /* pcrel_offset */ |
5bd4f169 AM |
381 | |
382 | /* A relative 16 bit branch; the lower two bits must be zero. */ | |
383 | HOWTO (R_PPC64_REL14, /* type */ | |
384 | 0, /* rightshift */ | |
385 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
386 | 16, /* bitsize */ | |
b34976b6 | 387 | TRUE, /* pc_relative */ |
5bd4f169 AM |
388 | 0, /* bitpos */ |
389 | complain_overflow_signed, /* complain_on_overflow */ | |
2441e016 | 390 | ppc64_elf_branch_reloc, /* special_function */ |
5bd4f169 | 391 | "R_PPC64_REL14", /* name */ |
b34976b6 | 392 | FALSE, /* partial_inplace */ |
d006db6c | 393 | 0, /* src_mask */ |
f5e87a1d | 394 | 0x0000fffc, /* dst_mask */ |
b34976b6 | 395 | TRUE), /* pcrel_offset */ |
5bd4f169 AM |
396 | |
397 | /* A relative 16 bit branch. Bit 10 should be set to indicate that | |
398 | the branch is expected to be taken. The lower two bits must be | |
399 | zero. */ | |
400 | HOWTO (R_PPC64_REL14_BRTAKEN, /* type */ | |
401 | 0, /* rightshift */ | |
402 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
403 | 16, /* bitsize */ | |
b34976b6 | 404 | TRUE, /* pc_relative */ |
5bd4f169 AM |
405 | 0, /* bitpos */ |
406 | complain_overflow_signed, /* complain_on_overflow */ | |
805fc799 | 407 | ppc64_elf_brtaken_reloc, /* special_function */ |
5bd4f169 | 408 | "R_PPC64_REL14_BRTAKEN", /* name */ |
b34976b6 | 409 | FALSE, /* partial_inplace */ |
d006db6c | 410 | 0, /* src_mask */ |
f5e87a1d | 411 | 0x0000fffc, /* dst_mask */ |
b34976b6 | 412 | TRUE), /* pcrel_offset */ |
5bd4f169 AM |
413 | |
414 | /* A relative 16 bit branch. Bit 10 should be set to indicate that | |
415 | the branch is not expected to be taken. The lower two bits must | |
416 | be zero. */ | |
417 | HOWTO (R_PPC64_REL14_BRNTAKEN, /* type */ | |
418 | 0, /* rightshift */ | |
419 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
420 | 16, /* bitsize */ | |
b34976b6 | 421 | TRUE, /* pc_relative */ |
5bd4f169 AM |
422 | 0, /* bitpos */ |
423 | complain_overflow_signed, /* complain_on_overflow */ | |
805fc799 | 424 | ppc64_elf_brtaken_reloc, /* special_function */ |
5bd4f169 | 425 | "R_PPC64_REL14_BRNTAKEN",/* name */ |
b34976b6 | 426 | FALSE, /* partial_inplace */ |
d006db6c | 427 | 0, /* src_mask */ |
f5e87a1d | 428 | 0x0000fffc, /* dst_mask */ |
b34976b6 | 429 | TRUE), /* pcrel_offset */ |
5bd4f169 AM |
430 | |
431 | /* Like R_PPC64_ADDR16, but referring to the GOT table entry for the | |
432 | symbol. */ | |
433 | HOWTO (R_PPC64_GOT16, /* type */ | |
434 | 0, /* rightshift */ | |
435 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
436 | 16, /* bitsize */ | |
b34976b6 | 437 | FALSE, /* pc_relative */ |
5bd4f169 AM |
438 | 0, /* bitpos */ |
439 | complain_overflow_signed, /* complain_on_overflow */ | |
805fc799 | 440 | ppc64_elf_unhandled_reloc, /* special_function */ |
5bd4f169 | 441 | "R_PPC64_GOT16", /* name */ |
b34976b6 | 442 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
443 | 0, /* src_mask */ |
444 | 0xffff, /* dst_mask */ | |
b34976b6 | 445 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
446 | |
447 | /* Like R_PPC64_ADDR16_LO, but referring to the GOT table entry for | |
448 | the symbol. */ | |
449 | HOWTO (R_PPC64_GOT16_LO, /* type */ | |
450 | 0, /* rightshift */ | |
451 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
452 | 16, /* bitsize */ | |
b34976b6 | 453 | FALSE, /* pc_relative */ |
5bd4f169 AM |
454 | 0, /* bitpos */ |
455 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 456 | ppc64_elf_unhandled_reloc, /* special_function */ |
5bd4f169 | 457 | "R_PPC64_GOT16_LO", /* name */ |
b34976b6 | 458 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
459 | 0, /* src_mask */ |
460 | 0xffff, /* dst_mask */ | |
b34976b6 | 461 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
462 | |
463 | /* Like R_PPC64_ADDR16_HI, but referring to the GOT table entry for | |
464 | the symbol. */ | |
465 | HOWTO (R_PPC64_GOT16_HI, /* type */ | |
466 | 16, /* rightshift */ | |
467 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
468 | 16, /* bitsize */ | |
b34976b6 | 469 | FALSE, /* pc_relative */ |
5bd4f169 AM |
470 | 0, /* bitpos */ |
471 | complain_overflow_dont,/* complain_on_overflow */ | |
805fc799 | 472 | ppc64_elf_unhandled_reloc, /* special_function */ |
5bd4f169 | 473 | "R_PPC64_GOT16_HI", /* name */ |
b34976b6 | 474 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
475 | 0, /* src_mask */ |
476 | 0xffff, /* dst_mask */ | |
b34976b6 | 477 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
478 | |
479 | /* Like R_PPC64_ADDR16_HA, but referring to the GOT table entry for | |
480 | the symbol. */ | |
481 | HOWTO (R_PPC64_GOT16_HA, /* type */ | |
482 | 16, /* rightshift */ | |
483 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
484 | 16, /* bitsize */ | |
b34976b6 | 485 | FALSE, /* pc_relative */ |
5bd4f169 AM |
486 | 0, /* bitpos */ |
487 | complain_overflow_dont,/* complain_on_overflow */ | |
805fc799 | 488 | ppc64_elf_unhandled_reloc, /* special_function */ |
5bd4f169 | 489 | "R_PPC64_GOT16_HA", /* name */ |
b34976b6 | 490 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
491 | 0, /* src_mask */ |
492 | 0xffff, /* dst_mask */ | |
b34976b6 | 493 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
494 | |
495 | /* This is used only by the dynamic linker. The symbol should exist | |
496 | both in the object being run and in some shared library. The | |
497 | dynamic linker copies the data addressed by the symbol from the | |
498 | shared library into the object, because the object being | |
499 | run has to have the data at some particular address. */ | |
500 | HOWTO (R_PPC64_COPY, /* type */ | |
501 | 0, /* rightshift */ | |
f5e87a1d AM |
502 | 0, /* this one is variable size */ |
503 | 0, /* bitsize */ | |
b34976b6 | 504 | FALSE, /* pc_relative */ |
5bd4f169 | 505 | 0, /* bitpos */ |
f5e87a1d AM |
506 | complain_overflow_dont, /* complain_on_overflow */ |
507 | ppc64_elf_unhandled_reloc, /* special_function */ | |
5bd4f169 | 508 | "R_PPC64_COPY", /* name */ |
b34976b6 | 509 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
510 | 0, /* src_mask */ |
511 | 0, /* dst_mask */ | |
b34976b6 | 512 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
513 | |
514 | /* Like R_PPC64_ADDR64, but used when setting global offset table | |
515 | entries. */ | |
516 | HOWTO (R_PPC64_GLOB_DAT, /* type */ | |
517 | 0, /* rightshift */ | |
518 | 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */ | |
519 | 64, /* 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_GLOB_DAT", /* name */ |
b34976b6 | 525 | FALSE, /* partial_inplace */ |
5bd4f169 | 526 | 0, /* src_mask */ |
f5e87a1d | 527 | ONES (64), /* dst_mask */ |
b34976b6 | 528 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
529 | |
530 | /* Created by the link editor. Marks a procedure linkage table | |
531 | entry for a symbol. */ | |
532 | HOWTO (R_PPC64_JMP_SLOT, /* type */ | |
533 | 0, /* rightshift */ | |
534 | 0, /* size (0 = byte, 1 = short, 2 = long) */ | |
535 | 0, /* bitsize */ | |
b34976b6 | 536 | FALSE, /* pc_relative */ |
5bd4f169 AM |
537 | 0, /* bitpos */ |
538 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 539 | ppc64_elf_unhandled_reloc, /* special_function */ |
5bd4f169 | 540 | "R_PPC64_JMP_SLOT", /* name */ |
b34976b6 | 541 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
542 | 0, /* src_mask */ |
543 | 0, /* dst_mask */ | |
b34976b6 | 544 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
545 | |
546 | /* Used only by the dynamic linker. When the object is run, this | |
547 | doubleword64 is set to the load address of the object, plus the | |
548 | addend. */ | |
549 | HOWTO (R_PPC64_RELATIVE, /* type */ | |
550 | 0, /* rightshift */ | |
551 | 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */ | |
552 | 64, /* bitsize */ | |
b34976b6 | 553 | FALSE, /* pc_relative */ |
5bd4f169 AM |
554 | 0, /* bitpos */ |
555 | complain_overflow_dont, /* complain_on_overflow */ | |
556 | bfd_elf_generic_reloc, /* special_function */ | |
557 | "R_PPC64_RELATIVE", /* name */ | |
b34976b6 | 558 | FALSE, /* partial_inplace */ |
5bd4f169 | 559 | 0, /* src_mask */ |
f5e87a1d | 560 | ONES (64), /* dst_mask */ |
b34976b6 | 561 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
562 | |
563 | /* Like R_PPC64_ADDR32, but may be unaligned. */ | |
564 | HOWTO (R_PPC64_UADDR32, /* type */ | |
565 | 0, /* rightshift */ | |
566 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
567 | 32, /* bitsize */ | |
b34976b6 | 568 | FALSE, /* pc_relative */ |
5bd4f169 AM |
569 | 0, /* bitpos */ |
570 | complain_overflow_bitfield, /* complain_on_overflow */ | |
571 | bfd_elf_generic_reloc, /* special_function */ | |
572 | "R_PPC64_UADDR32", /* name */ | |
b34976b6 | 573 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
574 | 0, /* src_mask */ |
575 | 0xffffffff, /* dst_mask */ | |
b34976b6 | 576 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
577 | |
578 | /* Like R_PPC64_ADDR16, but may be unaligned. */ | |
579 | HOWTO (R_PPC64_UADDR16, /* type */ | |
580 | 0, /* rightshift */ | |
581 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
582 | 16, /* bitsize */ | |
b34976b6 | 583 | FALSE, /* pc_relative */ |
5bd4f169 AM |
584 | 0, /* bitpos */ |
585 | complain_overflow_bitfield, /* complain_on_overflow */ | |
586 | bfd_elf_generic_reloc, /* special_function */ | |
587 | "R_PPC64_UADDR16", /* name */ | |
b34976b6 | 588 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
589 | 0, /* src_mask */ |
590 | 0xffff, /* dst_mask */ | |
b34976b6 | 591 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
592 | |
593 | /* 32-bit PC relative. */ | |
594 | HOWTO (R_PPC64_REL32, /* type */ | |
595 | 0, /* rightshift */ | |
596 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
597 | 32, /* bitsize */ | |
b34976b6 | 598 | TRUE, /* pc_relative */ |
5bd4f169 | 599 | 0, /* bitpos */ |
cedb70c5 | 600 | /* FIXME: Verify. Was complain_overflow_bitfield. */ |
5bd4f169 AM |
601 | complain_overflow_signed, /* complain_on_overflow */ |
602 | bfd_elf_generic_reloc, /* special_function */ | |
603 | "R_PPC64_REL32", /* name */ | |
b34976b6 | 604 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
605 | 0, /* src_mask */ |
606 | 0xffffffff, /* dst_mask */ | |
b34976b6 | 607 | TRUE), /* pcrel_offset */ |
5bd4f169 | 608 | |
10ed1bba | 609 | /* 32-bit relocation to the symbol's procedure linkage table. */ |
5bd4f169 AM |
610 | HOWTO (R_PPC64_PLT32, /* type */ |
611 | 0, /* rightshift */ | |
612 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
613 | 32, /* bitsize */ | |
b34976b6 | 614 | FALSE, /* pc_relative */ |
5bd4f169 AM |
615 | 0, /* bitpos */ |
616 | complain_overflow_bitfield, /* complain_on_overflow */ | |
805fc799 | 617 | ppc64_elf_unhandled_reloc, /* special_function */ |
5bd4f169 | 618 | "R_PPC64_PLT32", /* name */ |
b34976b6 | 619 | FALSE, /* partial_inplace */ |
5bd4f169 | 620 | 0, /* src_mask */ |
f5e87a1d | 621 | 0xffffffff, /* dst_mask */ |
b34976b6 | 622 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
623 | |
624 | /* 32-bit PC relative relocation to the symbol's procedure linkage table. | |
625 | FIXME: R_PPC64_PLTREL32 not supported. */ | |
626 | HOWTO (R_PPC64_PLTREL32, /* type */ | |
627 | 0, /* rightshift */ | |
628 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
629 | 32, /* bitsize */ | |
b34976b6 | 630 | TRUE, /* pc_relative */ |
5bd4f169 AM |
631 | 0, /* bitpos */ |
632 | complain_overflow_signed, /* complain_on_overflow */ | |
633 | bfd_elf_generic_reloc, /* special_function */ | |
634 | "R_PPC64_PLTREL32", /* name */ | |
b34976b6 | 635 | FALSE, /* partial_inplace */ |
5bd4f169 | 636 | 0, /* src_mask */ |
f5e87a1d | 637 | 0xffffffff, /* dst_mask */ |
b34976b6 | 638 | TRUE), /* pcrel_offset */ |
5bd4f169 AM |
639 | |
640 | /* Like R_PPC64_ADDR16_LO, but referring to the PLT table entry for | |
641 | the symbol. */ | |
642 | HOWTO (R_PPC64_PLT16_LO, /* type */ | |
643 | 0, /* rightshift */ | |
644 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
645 | 16, /* bitsize */ | |
b34976b6 | 646 | FALSE, /* pc_relative */ |
5bd4f169 AM |
647 | 0, /* bitpos */ |
648 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 649 | ppc64_elf_unhandled_reloc, /* special_function */ |
5bd4f169 | 650 | "R_PPC64_PLT16_LO", /* name */ |
b34976b6 | 651 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
652 | 0, /* src_mask */ |
653 | 0xffff, /* dst_mask */ | |
b34976b6 | 654 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
655 | |
656 | /* Like R_PPC64_ADDR16_HI, but referring to the PLT table entry for | |
657 | the symbol. */ | |
658 | HOWTO (R_PPC64_PLT16_HI, /* type */ | |
659 | 16, /* rightshift */ | |
660 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
661 | 16, /* bitsize */ | |
b34976b6 | 662 | FALSE, /* pc_relative */ |
5bd4f169 AM |
663 | 0, /* bitpos */ |
664 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 665 | ppc64_elf_unhandled_reloc, /* special_function */ |
5bd4f169 | 666 | "R_PPC64_PLT16_HI", /* name */ |
b34976b6 | 667 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
668 | 0, /* src_mask */ |
669 | 0xffff, /* dst_mask */ | |
b34976b6 | 670 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
671 | |
672 | /* Like R_PPC64_ADDR16_HA, but referring to the PLT table entry for | |
673 | the symbol. */ | |
674 | HOWTO (R_PPC64_PLT16_HA, /* type */ | |
675 | 16, /* rightshift */ | |
676 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
677 | 16, /* bitsize */ | |
b34976b6 | 678 | FALSE, /* pc_relative */ |
5bd4f169 AM |
679 | 0, /* bitpos */ |
680 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 681 | ppc64_elf_unhandled_reloc, /* special_function */ |
5bd4f169 | 682 | "R_PPC64_PLT16_HA", /* name */ |
b34976b6 | 683 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
684 | 0, /* src_mask */ |
685 | 0xffff, /* dst_mask */ | |
b34976b6 | 686 | FALSE), /* pcrel_offset */ |
5bd4f169 | 687 | |
c061c2d8 | 688 | /* 16-bit section relative relocation. */ |
5bd4f169 AM |
689 | HOWTO (R_PPC64_SECTOFF, /* type */ |
690 | 0, /* rightshift */ | |
c061c2d8 AM |
691 | 1, /* size (0 = byte, 1 = short, 2 = long) */ |
692 | 16, /* bitsize */ | |
b34976b6 | 693 | FALSE, /* pc_relative */ |
5bd4f169 AM |
694 | 0, /* bitpos */ |
695 | complain_overflow_bitfield, /* complain_on_overflow */ | |
805fc799 | 696 | ppc64_elf_sectoff_reloc, /* special_function */ |
5bd4f169 | 697 | "R_PPC64_SECTOFF", /* name */ |
b34976b6 | 698 | FALSE, /* partial_inplace */ |
5bd4f169 | 699 | 0, /* src_mask */ |
c061c2d8 | 700 | 0xffff, /* dst_mask */ |
b34976b6 | 701 | FALSE), /* pcrel_offset */ |
5bd4f169 | 702 | |
c061c2d8 | 703 | /* Like R_PPC64_SECTOFF, but no overflow warning. */ |
5bd4f169 AM |
704 | HOWTO (R_PPC64_SECTOFF_LO, /* type */ |
705 | 0, /* rightshift */ | |
706 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
707 | 16, /* bitsize */ | |
b34976b6 | 708 | FALSE, /* pc_relative */ |
5bd4f169 AM |
709 | 0, /* bitpos */ |
710 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 711 | ppc64_elf_sectoff_reloc, /* special_function */ |
5bd4f169 | 712 | "R_PPC64_SECTOFF_LO", /* name */ |
b34976b6 | 713 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
714 | 0, /* src_mask */ |
715 | 0xffff, /* dst_mask */ | |
b34976b6 | 716 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
717 | |
718 | /* 16-bit upper half section relative relocation. */ | |
719 | HOWTO (R_PPC64_SECTOFF_HI, /* type */ | |
720 | 16, /* rightshift */ | |
721 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
722 | 16, /* bitsize */ | |
b34976b6 | 723 | FALSE, /* pc_relative */ |
5bd4f169 AM |
724 | 0, /* bitpos */ |
725 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 726 | ppc64_elf_sectoff_reloc, /* special_function */ |
5bd4f169 | 727 | "R_PPC64_SECTOFF_HI", /* name */ |
b34976b6 | 728 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
729 | 0, /* src_mask */ |
730 | 0xffff, /* dst_mask */ | |
b34976b6 | 731 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
732 | |
733 | /* 16-bit upper half adjusted section relative relocation. */ | |
734 | HOWTO (R_PPC64_SECTOFF_HA, /* type */ | |
735 | 16, /* rightshift */ | |
736 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
737 | 16, /* bitsize */ | |
b34976b6 | 738 | FALSE, /* pc_relative */ |
5bd4f169 AM |
739 | 0, /* bitpos */ |
740 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 741 | ppc64_elf_sectoff_ha_reloc, /* special_function */ |
5bd4f169 | 742 | "R_PPC64_SECTOFF_HA", /* name */ |
b34976b6 | 743 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
744 | 0, /* src_mask */ |
745 | 0xffff, /* dst_mask */ | |
b34976b6 | 746 | FALSE), /* pcrel_offset */ |
5bd4f169 | 747 | |
04c9666a AM |
748 | /* Like R_PPC64_REL24 without touching the two least significant bits. */ |
749 | HOWTO (R_PPC64_REL30, /* type */ | |
5bd4f169 AM |
750 | 2, /* rightshift */ |
751 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
752 | 30, /* bitsize */ | |
b34976b6 | 753 | TRUE, /* pc_relative */ |
5bd4f169 AM |
754 | 0, /* bitpos */ |
755 | complain_overflow_dont, /* complain_on_overflow */ | |
756 | bfd_elf_generic_reloc, /* special_function */ | |
04c9666a | 757 | "R_PPC64_REL30", /* name */ |
b34976b6 | 758 | FALSE, /* partial_inplace */ |
d006db6c | 759 | 0, /* src_mask */ |
5bd4f169 | 760 | 0xfffffffc, /* dst_mask */ |
b34976b6 | 761 | TRUE), /* pcrel_offset */ |
5bd4f169 AM |
762 | |
763 | /* Relocs in the 64-bit PowerPC ELF ABI, not in the 32-bit ABI. */ | |
764 | ||
765 | /* A standard 64-bit relocation. */ | |
766 | HOWTO (R_PPC64_ADDR64, /* type */ | |
767 | 0, /* rightshift */ | |
768 | 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */ | |
769 | 64, /* bitsize */ | |
b34976b6 | 770 | FALSE, /* pc_relative */ |
5bd4f169 AM |
771 | 0, /* bitpos */ |
772 | complain_overflow_dont, /* complain_on_overflow */ | |
773 | bfd_elf_generic_reloc, /* special_function */ | |
774 | "R_PPC64_ADDR64", /* name */ | |
b34976b6 | 775 | FALSE, /* partial_inplace */ |
5bd4f169 | 776 | 0, /* src_mask */ |
f5e87a1d | 777 | ONES (64), /* dst_mask */ |
b34976b6 | 778 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
779 | |
780 | /* The bits 32-47 of an address. */ | |
781 | HOWTO (R_PPC64_ADDR16_HIGHER, /* type */ | |
782 | 32, /* rightshift */ | |
783 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
784 | 16, /* bitsize */ | |
b34976b6 | 785 | FALSE, /* pc_relative */ |
5bd4f169 AM |
786 | 0, /* bitpos */ |
787 | complain_overflow_dont, /* complain_on_overflow */ | |
788 | bfd_elf_generic_reloc, /* special_function */ | |
789 | "R_PPC64_ADDR16_HIGHER", /* name */ | |
b34976b6 | 790 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
791 | 0, /* src_mask */ |
792 | 0xffff, /* dst_mask */ | |
b34976b6 | 793 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
794 | |
795 | /* The bits 32-47 of an address, plus 1 if the contents of the low | |
796 | 16 bits, treated as a signed number, is negative. */ | |
797 | HOWTO (R_PPC64_ADDR16_HIGHERA, /* type */ | |
798 | 32, /* rightshift */ | |
799 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
800 | 16, /* bitsize */ | |
b34976b6 | 801 | FALSE, /* pc_relative */ |
5bd4f169 AM |
802 | 0, /* bitpos */ |
803 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 804 | ppc64_elf_ha_reloc, /* special_function */ |
5bd4f169 | 805 | "R_PPC64_ADDR16_HIGHERA", /* name */ |
b34976b6 | 806 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
807 | 0, /* src_mask */ |
808 | 0xffff, /* dst_mask */ | |
b34976b6 | 809 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
810 | |
811 | /* The bits 48-63 of an address. */ | |
812 | HOWTO (R_PPC64_ADDR16_HIGHEST,/* type */ | |
813 | 48, /* rightshift */ | |
814 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
815 | 16, /* bitsize */ | |
b34976b6 | 816 | FALSE, /* pc_relative */ |
5bd4f169 AM |
817 | 0, /* bitpos */ |
818 | complain_overflow_dont, /* complain_on_overflow */ | |
819 | bfd_elf_generic_reloc, /* special_function */ | |
820 | "R_PPC64_ADDR16_HIGHEST", /* name */ | |
b34976b6 | 821 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
822 | 0, /* src_mask */ |
823 | 0xffff, /* dst_mask */ | |
b34976b6 | 824 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
825 | |
826 | /* The bits 48-63 of an address, plus 1 if the contents of the low | |
827 | 16 bits, treated as a signed number, is negative. */ | |
828 | HOWTO (R_PPC64_ADDR16_HIGHESTA,/* type */ | |
829 | 48, /* rightshift */ | |
830 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
831 | 16, /* bitsize */ | |
b34976b6 | 832 | FALSE, /* pc_relative */ |
5bd4f169 AM |
833 | 0, /* bitpos */ |
834 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 835 | ppc64_elf_ha_reloc, /* special_function */ |
5bd4f169 | 836 | "R_PPC64_ADDR16_HIGHESTA", /* name */ |
b34976b6 | 837 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
838 | 0, /* src_mask */ |
839 | 0xffff, /* dst_mask */ | |
b34976b6 | 840 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
841 | |
842 | /* Like ADDR64, but may be unaligned. */ | |
843 | HOWTO (R_PPC64_UADDR64, /* type */ | |
844 | 0, /* rightshift */ | |
845 | 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */ | |
846 | 64, /* bitsize */ | |
b34976b6 | 847 | FALSE, /* pc_relative */ |
5bd4f169 AM |
848 | 0, /* bitpos */ |
849 | complain_overflow_dont, /* complain_on_overflow */ | |
850 | bfd_elf_generic_reloc, /* special_function */ | |
851 | "R_PPC64_UADDR64", /* name */ | |
b34976b6 | 852 | FALSE, /* partial_inplace */ |
5bd4f169 | 853 | 0, /* src_mask */ |
f5e87a1d | 854 | ONES (64), /* dst_mask */ |
b34976b6 | 855 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
856 | |
857 | /* 64-bit relative relocation. */ | |
858 | HOWTO (R_PPC64_REL64, /* type */ | |
859 | 0, /* rightshift */ | |
860 | 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */ | |
861 | 64, /* bitsize */ | |
b34976b6 | 862 | TRUE, /* pc_relative */ |
5bd4f169 AM |
863 | 0, /* bitpos */ |
864 | complain_overflow_dont, /* complain_on_overflow */ | |
865 | bfd_elf_generic_reloc, /* special_function */ | |
866 | "R_PPC64_REL64", /* name */ | |
b34976b6 | 867 | FALSE, /* partial_inplace */ |
5bd4f169 | 868 | 0, /* src_mask */ |
f5e87a1d | 869 | ONES (64), /* dst_mask */ |
b34976b6 | 870 | TRUE), /* pcrel_offset */ |
5bd4f169 | 871 | |
cedb70c5 | 872 | /* 64-bit relocation to the symbol's procedure linkage table. */ |
5bd4f169 AM |
873 | HOWTO (R_PPC64_PLT64, /* type */ |
874 | 0, /* rightshift */ | |
875 | 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */ | |
876 | 64, /* bitsize */ | |
b34976b6 | 877 | FALSE, /* pc_relative */ |
5bd4f169 AM |
878 | 0, /* bitpos */ |
879 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 880 | ppc64_elf_unhandled_reloc, /* special_function */ |
5bd4f169 | 881 | "R_PPC64_PLT64", /* name */ |
b34976b6 | 882 | FALSE, /* partial_inplace */ |
5bd4f169 | 883 | 0, /* src_mask */ |
f5e87a1d | 884 | ONES (64), /* dst_mask */ |
b34976b6 | 885 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
886 | |
887 | /* 64-bit PC relative relocation to the symbol's procedure linkage | |
888 | table. */ | |
889 | /* FIXME: R_PPC64_PLTREL64 not supported. */ | |
890 | HOWTO (R_PPC64_PLTREL64, /* type */ | |
891 | 0, /* rightshift */ | |
892 | 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */ | |
893 | 64, /* bitsize */ | |
b34976b6 | 894 | TRUE, /* pc_relative */ |
5bd4f169 AM |
895 | 0, /* bitpos */ |
896 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 897 | ppc64_elf_unhandled_reloc, /* special_function */ |
5bd4f169 | 898 | "R_PPC64_PLTREL64", /* name */ |
b34976b6 | 899 | FALSE, /* partial_inplace */ |
5bd4f169 | 900 | 0, /* src_mask */ |
f5e87a1d | 901 | ONES (64), /* dst_mask */ |
b34976b6 | 902 | TRUE), /* pcrel_offset */ |
5bd4f169 AM |
903 | |
904 | /* 16 bit TOC-relative relocation. */ | |
905 | ||
906 | /* R_PPC64_TOC16 47 half16* S + A - .TOC. */ | |
907 | HOWTO (R_PPC64_TOC16, /* type */ | |
908 | 0, /* rightshift */ | |
909 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
910 | 16, /* bitsize */ | |
b34976b6 | 911 | FALSE, /* pc_relative */ |
5bd4f169 AM |
912 | 0, /* bitpos */ |
913 | complain_overflow_signed, /* complain_on_overflow */ | |
805fc799 | 914 | ppc64_elf_toc_reloc, /* special_function */ |
5bd4f169 | 915 | "R_PPC64_TOC16", /* name */ |
b34976b6 | 916 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
917 | 0, /* src_mask */ |
918 | 0xffff, /* dst_mask */ | |
b34976b6 | 919 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
920 | |
921 | /* 16 bit TOC-relative relocation without overflow. */ | |
922 | ||
923 | /* R_PPC64_TOC16_LO 48 half16 #lo (S + A - .TOC.) */ | |
924 | HOWTO (R_PPC64_TOC16_LO, /* type */ | |
925 | 0, /* rightshift */ | |
926 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
927 | 16, /* bitsize */ | |
b34976b6 | 928 | FALSE, /* pc_relative */ |
5bd4f169 AM |
929 | 0, /* bitpos */ |
930 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 931 | ppc64_elf_toc_reloc, /* special_function */ |
5bd4f169 | 932 | "R_PPC64_TOC16_LO", /* name */ |
b34976b6 | 933 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
934 | 0, /* src_mask */ |
935 | 0xffff, /* dst_mask */ | |
b34976b6 | 936 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
937 | |
938 | /* 16 bit TOC-relative relocation, high 16 bits. */ | |
939 | ||
940 | /* R_PPC64_TOC16_HI 49 half16 #hi (S + A - .TOC.) */ | |
941 | HOWTO (R_PPC64_TOC16_HI, /* type */ | |
942 | 16, /* rightshift */ | |
943 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
944 | 16, /* bitsize */ | |
b34976b6 | 945 | FALSE, /* pc_relative */ |
5bd4f169 AM |
946 | 0, /* bitpos */ |
947 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 948 | ppc64_elf_toc_reloc, /* special_function */ |
5bd4f169 | 949 | "R_PPC64_TOC16_HI", /* name */ |
b34976b6 | 950 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
951 | 0, /* src_mask */ |
952 | 0xffff, /* dst_mask */ | |
b34976b6 | 953 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
954 | |
955 | /* 16 bit TOC-relative relocation, high 16 bits, plus 1 if the | |
956 | contents of the low 16 bits, treated as a signed number, is | |
957 | negative. */ | |
958 | ||
959 | /* R_PPC64_TOC16_HA 50 half16 #ha (S + A - .TOC.) */ | |
960 | HOWTO (R_PPC64_TOC16_HA, /* type */ | |
961 | 16, /* rightshift */ | |
962 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
963 | 16, /* bitsize */ | |
b34976b6 | 964 | FALSE, /* pc_relative */ |
5bd4f169 AM |
965 | 0, /* bitpos */ |
966 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 967 | ppc64_elf_toc_ha_reloc, /* special_function */ |
5bd4f169 | 968 | "R_PPC64_TOC16_HA", /* name */ |
b34976b6 | 969 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
970 | 0, /* src_mask */ |
971 | 0xffff, /* dst_mask */ | |
b34976b6 | 972 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
973 | |
974 | /* 64-bit relocation; insert value of TOC base (.TOC.). */ | |
975 | ||
976 | /* R_PPC64_TOC 51 doubleword64 .TOC. */ | |
977 | HOWTO (R_PPC64_TOC, /* type */ | |
978 | 0, /* rightshift */ | |
979 | 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */ | |
980 | 64, /* bitsize */ | |
b34976b6 | 981 | FALSE, /* pc_relative */ |
5bd4f169 AM |
982 | 0, /* bitpos */ |
983 | complain_overflow_bitfield, /* complain_on_overflow */ | |
805fc799 | 984 | ppc64_elf_toc64_reloc, /* special_function */ |
5bd4f169 | 985 | "R_PPC64_TOC", /* name */ |
b34976b6 | 986 | FALSE, /* partial_inplace */ |
5bd4f169 | 987 | 0, /* src_mask */ |
f5e87a1d | 988 | ONES (64), /* dst_mask */ |
b34976b6 | 989 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
990 | |
991 | /* Like R_PPC64_GOT16, but also informs the link editor that the | |
992 | value to relocate may (!) refer to a PLT entry which the link | |
993 | editor (a) may replace with the symbol value. If the link editor | |
994 | is unable to fully resolve the symbol, it may (b) create a PLT | |
995 | entry and store the address to the new PLT entry in the GOT. | |
996 | This permits lazy resolution of function symbols at run time. | |
997 | The link editor may also skip all of this and just (c) emit a | |
998 | R_PPC64_GLOB_DAT to tie the symbol to the GOT entry. */ | |
999 | /* FIXME: R_PPC64_PLTGOT16 not implemented. */ | |
1000 | HOWTO (R_PPC64_PLTGOT16, /* type */ | |
1001 | 0, /* rightshift */ | |
1002 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1003 | 16, /* bitsize */ | |
b34976b6 | 1004 | FALSE, /* pc_relative */ |
5bd4f169 AM |
1005 | 0, /* bitpos */ |
1006 | complain_overflow_signed, /* complain_on_overflow */ | |
805fc799 | 1007 | ppc64_elf_unhandled_reloc, /* special_function */ |
411e1bfb AM |
1008 | "R_PPC64_PLTGOT16", /* name */ |
1009 | FALSE, /* partial_inplace */ | |
1010 | 0, /* src_mask */ | |
1011 | 0xffff, /* dst_mask */ | |
1012 | FALSE), /* pcrel_offset */ | |
1013 | ||
1014 | /* Like R_PPC64_PLTGOT16, but without overflow. */ | |
1015 | /* FIXME: R_PPC64_PLTGOT16_LO not implemented. */ | |
1016 | HOWTO (R_PPC64_PLTGOT16_LO, /* type */ | |
1017 | 0, /* rightshift */ | |
1018 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1019 | 16, /* bitsize */ | |
1020 | FALSE, /* pc_relative */ | |
1021 | 0, /* bitpos */ | |
1022 | complain_overflow_dont, /* complain_on_overflow */ | |
1023 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1024 | "R_PPC64_PLTGOT16_LO", /* name */ | |
1025 | FALSE, /* partial_inplace */ | |
1026 | 0, /* src_mask */ | |
1027 | 0xffff, /* dst_mask */ | |
1028 | FALSE), /* pcrel_offset */ | |
1029 | ||
1030 | /* Like R_PPC64_PLT_GOT16, but using bits 16-31 of the address. */ | |
1031 | /* FIXME: R_PPC64_PLTGOT16_HI not implemented. */ | |
1032 | HOWTO (R_PPC64_PLTGOT16_HI, /* type */ | |
1033 | 16, /* rightshift */ | |
1034 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1035 | 16, /* bitsize */ | |
1036 | FALSE, /* pc_relative */ | |
1037 | 0, /* bitpos */ | |
1038 | complain_overflow_dont, /* complain_on_overflow */ | |
1039 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1040 | "R_PPC64_PLTGOT16_HI", /* name */ | |
1041 | FALSE, /* partial_inplace */ | |
1042 | 0, /* src_mask */ | |
1043 | 0xffff, /* dst_mask */ | |
1044 | FALSE), /* pcrel_offset */ | |
1045 | ||
1046 | /* Like R_PPC64_PLT_GOT16, but using bits 16-31 of the address, plus | |
1047 | 1 if the contents of the low 16 bits, treated as a signed number, | |
1048 | is negative. */ | |
1049 | /* FIXME: R_PPC64_PLTGOT16_HA not implemented. */ | |
1050 | HOWTO (R_PPC64_PLTGOT16_HA, /* type */ | |
1051 | 16, /* rightshift */ | |
1052 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1053 | 16, /* bitsize */ | |
1054 | FALSE, /* pc_relative */ | |
1055 | 0, /* bitpos */ | |
1056 | complain_overflow_dont,/* complain_on_overflow */ | |
1057 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1058 | "R_PPC64_PLTGOT16_HA", /* name */ | |
1059 | FALSE, /* partial_inplace */ | |
1060 | 0, /* src_mask */ | |
1061 | 0xffff, /* dst_mask */ | |
1062 | FALSE), /* pcrel_offset */ | |
1063 | ||
1064 | /* Like R_PPC64_ADDR16, but for instructions with a DS field. */ | |
1065 | HOWTO (R_PPC64_ADDR16_DS, /* type */ | |
1066 | 0, /* rightshift */ | |
1067 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1068 | 16, /* bitsize */ | |
1069 | FALSE, /* pc_relative */ | |
1070 | 0, /* bitpos */ | |
1071 | complain_overflow_bitfield, /* complain_on_overflow */ | |
1072 | bfd_elf_generic_reloc, /* special_function */ | |
1073 | "R_PPC64_ADDR16_DS", /* name */ | |
1074 | FALSE, /* partial_inplace */ | |
1075 | 0, /* src_mask */ | |
1076 | 0xfffc, /* dst_mask */ | |
1077 | FALSE), /* pcrel_offset */ | |
1078 | ||
1079 | /* Like R_PPC64_ADDR16_LO, but for instructions with a DS field. */ | |
1080 | HOWTO (R_PPC64_ADDR16_LO_DS, /* type */ | |
1081 | 0, /* rightshift */ | |
1082 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1083 | 16, /* bitsize */ | |
1084 | FALSE, /* pc_relative */ | |
1085 | 0, /* bitpos */ | |
1086 | complain_overflow_dont,/* complain_on_overflow */ | |
1087 | bfd_elf_generic_reloc, /* special_function */ | |
1088 | "R_PPC64_ADDR16_LO_DS",/* name */ | |
1089 | FALSE, /* partial_inplace */ | |
1090 | 0, /* src_mask */ | |
1091 | 0xfffc, /* dst_mask */ | |
1092 | FALSE), /* pcrel_offset */ | |
1093 | ||
1094 | /* Like R_PPC64_GOT16, but for instructions with a DS field. */ | |
1095 | HOWTO (R_PPC64_GOT16_DS, /* type */ | |
1096 | 0, /* rightshift */ | |
1097 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1098 | 16, /* bitsize */ | |
1099 | FALSE, /* pc_relative */ | |
1100 | 0, /* bitpos */ | |
1101 | complain_overflow_signed, /* complain_on_overflow */ | |
1102 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1103 | "R_PPC64_GOT16_DS", /* name */ | |
1104 | FALSE, /* partial_inplace */ | |
1105 | 0, /* src_mask */ | |
1106 | 0xfffc, /* dst_mask */ | |
1107 | FALSE), /* pcrel_offset */ | |
1108 | ||
1109 | /* Like R_PPC64_GOT16_LO, but for instructions with a DS field. */ | |
1110 | HOWTO (R_PPC64_GOT16_LO_DS, /* type */ | |
1111 | 0, /* rightshift */ | |
1112 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1113 | 16, /* bitsize */ | |
1114 | FALSE, /* pc_relative */ | |
1115 | 0, /* bitpos */ | |
1116 | complain_overflow_dont, /* complain_on_overflow */ | |
1117 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1118 | "R_PPC64_GOT16_LO_DS", /* name */ | |
1119 | FALSE, /* partial_inplace */ | |
1120 | 0, /* src_mask */ | |
1121 | 0xfffc, /* dst_mask */ | |
1122 | FALSE), /* pcrel_offset */ | |
1123 | ||
1124 | /* Like R_PPC64_PLT16_LO, but for instructions with a DS field. */ | |
1125 | HOWTO (R_PPC64_PLT16_LO_DS, /* type */ | |
1126 | 0, /* rightshift */ | |
1127 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1128 | 16, /* bitsize */ | |
1129 | FALSE, /* pc_relative */ | |
1130 | 0, /* bitpos */ | |
1131 | complain_overflow_dont, /* complain_on_overflow */ | |
1132 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1133 | "R_PPC64_PLT16_LO_DS", /* name */ | |
1134 | FALSE, /* partial_inplace */ | |
1135 | 0, /* src_mask */ | |
1136 | 0xfffc, /* dst_mask */ | |
1137 | FALSE), /* pcrel_offset */ | |
1138 | ||
1139 | /* Like R_PPC64_SECTOFF, but for instructions with a DS field. */ | |
1140 | HOWTO (R_PPC64_SECTOFF_DS, /* type */ | |
1141 | 0, /* rightshift */ | |
1142 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1143 | 16, /* bitsize */ | |
1144 | FALSE, /* pc_relative */ | |
1145 | 0, /* bitpos */ | |
1146 | complain_overflow_bitfield, /* complain_on_overflow */ | |
1147 | ppc64_elf_sectoff_reloc, /* special_function */ | |
1148 | "R_PPC64_SECTOFF_DS", /* name */ | |
1149 | FALSE, /* partial_inplace */ | |
1150 | 0, /* src_mask */ | |
1151 | 0xfffc, /* dst_mask */ | |
1152 | FALSE), /* pcrel_offset */ | |
1153 | ||
1154 | /* Like R_PPC64_SECTOFF_LO, but for instructions with a DS field. */ | |
1155 | HOWTO (R_PPC64_SECTOFF_LO_DS, /* type */ | |
1156 | 0, /* rightshift */ | |
1157 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1158 | 16, /* bitsize */ | |
1159 | FALSE, /* pc_relative */ | |
1160 | 0, /* bitpos */ | |
1161 | complain_overflow_dont, /* complain_on_overflow */ | |
1162 | ppc64_elf_sectoff_reloc, /* special_function */ | |
1163 | "R_PPC64_SECTOFF_LO_DS",/* name */ | |
1164 | FALSE, /* partial_inplace */ | |
1165 | 0, /* src_mask */ | |
1166 | 0xfffc, /* dst_mask */ | |
1167 | FALSE), /* pcrel_offset */ | |
1168 | ||
1169 | /* Like R_PPC64_TOC16, but for instructions with a DS field. */ | |
1170 | HOWTO (R_PPC64_TOC16_DS, /* type */ | |
1171 | 0, /* rightshift */ | |
1172 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1173 | 16, /* bitsize */ | |
1174 | FALSE, /* pc_relative */ | |
1175 | 0, /* bitpos */ | |
1176 | complain_overflow_signed, /* complain_on_overflow */ | |
1177 | ppc64_elf_toc_reloc, /* special_function */ | |
1178 | "R_PPC64_TOC16_DS", /* name */ | |
1179 | FALSE, /* partial_inplace */ | |
1180 | 0, /* src_mask */ | |
1181 | 0xfffc, /* dst_mask */ | |
1182 | FALSE), /* pcrel_offset */ | |
1183 | ||
1184 | /* Like R_PPC64_TOC16_LO, but for instructions with a DS field. */ | |
1185 | HOWTO (R_PPC64_TOC16_LO_DS, /* type */ | |
1186 | 0, /* rightshift */ | |
1187 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1188 | 16, /* bitsize */ | |
1189 | FALSE, /* pc_relative */ | |
1190 | 0, /* bitpos */ | |
1191 | complain_overflow_dont, /* complain_on_overflow */ | |
1192 | ppc64_elf_toc_reloc, /* special_function */ | |
1193 | "R_PPC64_TOC16_LO_DS", /* name */ | |
1194 | FALSE, /* partial_inplace */ | |
1195 | 0, /* src_mask */ | |
1196 | 0xfffc, /* dst_mask */ | |
1197 | FALSE), /* pcrel_offset */ | |
1198 | ||
1199 | /* Like R_PPC64_PLTGOT16, but for instructions with a DS field. */ | |
1200 | /* FIXME: R_PPC64_PLTGOT16_DS not implemented. */ | |
6bfdb61b | 1201 | HOWTO (R_PPC64_PLTGOT16_DS, /* type */ |
411e1bfb AM |
1202 | 0, /* rightshift */ |
1203 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1204 | 16, /* bitsize */ | |
1205 | FALSE, /* pc_relative */ | |
1206 | 0, /* bitpos */ | |
1207 | complain_overflow_signed, /* complain_on_overflow */ | |
1208 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1209 | "R_PPC64_PLTGOT16_DS", /* name */ | |
1210 | FALSE, /* partial_inplace */ | |
1211 | 0, /* src_mask */ | |
1212 | 0xfffc, /* dst_mask */ | |
1213 | FALSE), /* pcrel_offset */ | |
1214 | ||
1215 | /* Like R_PPC64_PLTGOT16_LO, but for instructions with a DS field. */ | |
1216 | /* FIXME: R_PPC64_PLTGOT16_LO not implemented. */ | |
1217 | HOWTO (R_PPC64_PLTGOT16_LO_DS,/* type */ | |
1218 | 0, /* rightshift */ | |
1219 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1220 | 16, /* bitsize */ | |
1221 | FALSE, /* pc_relative */ | |
1222 | 0, /* bitpos */ | |
1223 | complain_overflow_dont, /* complain_on_overflow */ | |
1224 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1225 | "R_PPC64_PLTGOT16_LO_DS",/* name */ | |
1226 | FALSE, /* partial_inplace */ | |
1227 | 0, /* src_mask */ | |
1228 | 0xfffc, /* dst_mask */ | |
1229 | FALSE), /* pcrel_offset */ | |
1230 | ||
1231 | /* Marker reloc for TLS. */ | |
1232 | HOWTO (R_PPC64_TLS, | |
1233 | 0, /* rightshift */ | |
1234 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1235 | 32, /* bitsize */ | |
1236 | FALSE, /* pc_relative */ | |
1237 | 0, /* bitpos */ | |
1238 | complain_overflow_dont, /* complain_on_overflow */ | |
1239 | bfd_elf_generic_reloc, /* special_function */ | |
1240 | "R_PPC64_TLS", /* name */ | |
1241 | FALSE, /* partial_inplace */ | |
1242 | 0, /* src_mask */ | |
1243 | 0, /* dst_mask */ | |
1244 | FALSE), /* pcrel_offset */ | |
1245 | ||
1246 | /* Computes the load module index of the load module that contains the | |
1247 | definition of its TLS sym. */ | |
1248 | HOWTO (R_PPC64_DTPMOD64, | |
1249 | 0, /* rightshift */ | |
1250 | 4, /* size (0 = byte, 1 = short, 2 = long) */ | |
1251 | 64, /* bitsize */ | |
1252 | FALSE, /* pc_relative */ | |
1253 | 0, /* bitpos */ | |
1254 | complain_overflow_dont, /* complain_on_overflow */ | |
1255 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1256 | "R_PPC64_DTPMOD64", /* name */ | |
1257 | FALSE, /* partial_inplace */ | |
1258 | 0, /* src_mask */ | |
1259 | ONES (64), /* dst_mask */ | |
1260 | FALSE), /* pcrel_offset */ | |
1261 | ||
1262 | /* Computes a dtv-relative displacement, the difference between the value | |
1263 | of sym+add and the base address of the thread-local storage block that | |
1264 | contains the definition of sym, minus 0x8000. */ | |
1265 | HOWTO (R_PPC64_DTPREL64, | |
1266 | 0, /* rightshift */ | |
1267 | 4, /* size (0 = byte, 1 = short, 2 = long) */ | |
1268 | 64, /* bitsize */ | |
1269 | FALSE, /* pc_relative */ | |
1270 | 0, /* bitpos */ | |
1271 | complain_overflow_dont, /* complain_on_overflow */ | |
1272 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1273 | "R_PPC64_DTPREL64", /* name */ | |
1274 | FALSE, /* partial_inplace */ | |
1275 | 0, /* src_mask */ | |
1276 | ONES (64), /* dst_mask */ | |
1277 | FALSE), /* pcrel_offset */ | |
1278 | ||
1279 | /* A 16 bit dtprel reloc. */ | |
1280 | HOWTO (R_PPC64_DTPREL16, | |
1281 | 0, /* rightshift */ | |
1282 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1283 | 16, /* bitsize */ | |
1284 | FALSE, /* pc_relative */ | |
1285 | 0, /* bitpos */ | |
1286 | complain_overflow_signed, /* complain_on_overflow */ | |
1287 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1288 | "R_PPC64_DTPREL16", /* name */ | |
1289 | FALSE, /* partial_inplace */ | |
1290 | 0, /* src_mask */ | |
1291 | 0xffff, /* dst_mask */ | |
1292 | FALSE), /* pcrel_offset */ | |
1293 | ||
1294 | /* Like DTPREL16, but no overflow. */ | |
1295 | HOWTO (R_PPC64_DTPREL16_LO, | |
1296 | 0, /* rightshift */ | |
1297 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1298 | 16, /* bitsize */ | |
1299 | FALSE, /* pc_relative */ | |
1300 | 0, /* bitpos */ | |
1301 | complain_overflow_dont, /* complain_on_overflow */ | |
1302 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1303 | "R_PPC64_DTPREL16_LO", /* name */ | |
1304 | FALSE, /* partial_inplace */ | |
1305 | 0, /* src_mask */ | |
1306 | 0xffff, /* dst_mask */ | |
1307 | FALSE), /* pcrel_offset */ | |
1308 | ||
1309 | /* Like DTPREL16_LO, but next higher group of 16 bits. */ | |
1310 | HOWTO (R_PPC64_DTPREL16_HI, | |
1311 | 16, /* rightshift */ | |
1312 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1313 | 16, /* bitsize */ | |
1314 | FALSE, /* pc_relative */ | |
1315 | 0, /* bitpos */ | |
1316 | complain_overflow_dont, /* complain_on_overflow */ | |
1317 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1318 | "R_PPC64_DTPREL16_HI", /* name */ | |
1319 | FALSE, /* partial_inplace */ | |
1320 | 0, /* src_mask */ | |
1321 | 0xffff, /* dst_mask */ | |
1322 | FALSE), /* pcrel_offset */ | |
1323 | ||
1324 | /* Like DTPREL16_HI, but adjust for low 16 bits. */ | |
1325 | HOWTO (R_PPC64_DTPREL16_HA, | |
1326 | 16, /* rightshift */ | |
1327 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1328 | 16, /* bitsize */ | |
1329 | FALSE, /* pc_relative */ | |
1330 | 0, /* bitpos */ | |
1331 | complain_overflow_dont, /* complain_on_overflow */ | |
1332 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1333 | "R_PPC64_DTPREL16_HA", /* name */ | |
1334 | FALSE, /* partial_inplace */ | |
1335 | 0, /* src_mask */ | |
1336 | 0xffff, /* dst_mask */ | |
1337 | FALSE), /* pcrel_offset */ | |
1338 | ||
1339 | /* Like DTPREL16_HI, but next higher group of 16 bits. */ | |
1340 | HOWTO (R_PPC64_DTPREL16_HIGHER, | |
1341 | 32, /* rightshift */ | |
1342 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1343 | 16, /* bitsize */ | |
1344 | FALSE, /* pc_relative */ | |
1345 | 0, /* bitpos */ | |
1346 | complain_overflow_dont, /* complain_on_overflow */ | |
1347 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1348 | "R_PPC64_DTPREL16_HIGHER", /* name */ | |
1349 | FALSE, /* partial_inplace */ | |
1350 | 0, /* src_mask */ | |
1351 | 0xffff, /* dst_mask */ | |
1352 | FALSE), /* pcrel_offset */ | |
1353 | ||
1354 | /* Like DTPREL16_HIGHER, but adjust for low 16 bits. */ | |
1355 | HOWTO (R_PPC64_DTPREL16_HIGHERA, | |
1356 | 32, /* rightshift */ | |
1357 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1358 | 16, /* bitsize */ | |
1359 | FALSE, /* pc_relative */ | |
1360 | 0, /* bitpos */ | |
1361 | complain_overflow_dont, /* complain_on_overflow */ | |
1362 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1363 | "R_PPC64_DTPREL16_HIGHERA", /* name */ | |
1364 | FALSE, /* partial_inplace */ | |
1365 | 0, /* src_mask */ | |
1366 | 0xffff, /* dst_mask */ | |
1367 | FALSE), /* pcrel_offset */ | |
1368 | ||
1369 | /* Like DTPREL16_HIGHER, but next higher group of 16 bits. */ | |
1370 | HOWTO (R_PPC64_DTPREL16_HIGHEST, | |
1371 | 48, /* rightshift */ | |
1372 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1373 | 16, /* bitsize */ | |
1374 | FALSE, /* pc_relative */ | |
1375 | 0, /* bitpos */ | |
1376 | complain_overflow_dont, /* complain_on_overflow */ | |
1377 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1378 | "R_PPC64_DTPREL16_HIGHEST", /* name */ | |
1379 | FALSE, /* partial_inplace */ | |
1380 | 0, /* src_mask */ | |
1381 | 0xffff, /* dst_mask */ | |
1382 | FALSE), /* pcrel_offset */ | |
1383 | ||
1384 | /* Like DTPREL16_HIGHEST, but adjust for low 16 bits. */ | |
1385 | HOWTO (R_PPC64_DTPREL16_HIGHESTA, | |
1386 | 48, /* rightshift */ | |
1387 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1388 | 16, /* bitsize */ | |
1389 | FALSE, /* pc_relative */ | |
1390 | 0, /* bitpos */ | |
1391 | complain_overflow_dont, /* complain_on_overflow */ | |
1392 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1393 | "R_PPC64_DTPREL16_HIGHESTA", /* name */ | |
1394 | FALSE, /* partial_inplace */ | |
1395 | 0, /* src_mask */ | |
1396 | 0xffff, /* dst_mask */ | |
1397 | FALSE), /* pcrel_offset */ | |
1398 | ||
1399 | /* Like DTPREL16, but for insns with a DS field. */ | |
1400 | HOWTO (R_PPC64_DTPREL16_DS, | |
1401 | 0, /* rightshift */ | |
1402 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1403 | 16, /* bitsize */ | |
1404 | FALSE, /* pc_relative */ | |
1405 | 0, /* bitpos */ | |
1406 | complain_overflow_signed, /* complain_on_overflow */ | |
1407 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1408 | "R_PPC64_DTPREL16_DS", /* name */ | |
1409 | FALSE, /* partial_inplace */ | |
1410 | 0, /* src_mask */ | |
1411 | 0xfffc, /* dst_mask */ | |
1412 | FALSE), /* pcrel_offset */ | |
1413 | ||
1414 | /* Like DTPREL16_DS, but no overflow. */ | |
1415 | HOWTO (R_PPC64_DTPREL16_LO_DS, | |
1416 | 0, /* rightshift */ | |
1417 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1418 | 16, /* bitsize */ | |
1419 | FALSE, /* pc_relative */ | |
1420 | 0, /* bitpos */ | |
1421 | complain_overflow_dont, /* complain_on_overflow */ | |
1422 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1423 | "R_PPC64_DTPREL16_LO_DS", /* name */ | |
1424 | FALSE, /* partial_inplace */ | |
1425 | 0, /* src_mask */ | |
1426 | 0xfffc, /* dst_mask */ | |
1427 | FALSE), /* pcrel_offset */ | |
1428 | ||
1429 | /* Computes a tp-relative displacement, the difference between the value of | |
1430 | sym+add and the value of the thread pointer (r13). */ | |
1431 | HOWTO (R_PPC64_TPREL64, | |
1432 | 0, /* rightshift */ | |
1433 | 4, /* size (0 = byte, 1 = short, 2 = long) */ | |
1434 | 64, /* bitsize */ | |
1435 | FALSE, /* pc_relative */ | |
1436 | 0, /* bitpos */ | |
1437 | complain_overflow_dont, /* complain_on_overflow */ | |
1438 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1439 | "R_PPC64_TPREL64", /* name */ | |
1440 | FALSE, /* partial_inplace */ | |
1441 | 0, /* src_mask */ | |
1442 | ONES (64), /* dst_mask */ | |
1443 | FALSE), /* pcrel_offset */ | |
1444 | ||
1445 | /* A 16 bit tprel reloc. */ | |
1446 | HOWTO (R_PPC64_TPREL16, | |
1447 | 0, /* rightshift */ | |
1448 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1449 | 16, /* bitsize */ | |
1450 | FALSE, /* pc_relative */ | |
1451 | 0, /* bitpos */ | |
1452 | complain_overflow_signed, /* complain_on_overflow */ | |
1453 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1454 | "R_PPC64_TPREL16", /* name */ | |
1455 | FALSE, /* partial_inplace */ | |
1456 | 0, /* src_mask */ | |
1457 | 0xffff, /* dst_mask */ | |
1458 | FALSE), /* pcrel_offset */ | |
1459 | ||
1460 | /* Like TPREL16, but no overflow. */ | |
1461 | HOWTO (R_PPC64_TPREL16_LO, | |
1462 | 0, /* rightshift */ | |
1463 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1464 | 16, /* bitsize */ | |
1465 | FALSE, /* pc_relative */ | |
1466 | 0, /* bitpos */ | |
1467 | complain_overflow_dont, /* complain_on_overflow */ | |
1468 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1469 | "R_PPC64_TPREL16_LO", /* name */ | |
1470 | FALSE, /* partial_inplace */ | |
1471 | 0, /* src_mask */ | |
1472 | 0xffff, /* dst_mask */ | |
1473 | FALSE), /* pcrel_offset */ | |
1474 | ||
1475 | /* Like TPREL16_LO, but next higher group of 16 bits. */ | |
1476 | HOWTO (R_PPC64_TPREL16_HI, | |
1477 | 16, /* rightshift */ | |
1478 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1479 | 16, /* bitsize */ | |
1480 | FALSE, /* pc_relative */ | |
1481 | 0, /* bitpos */ | |
1482 | complain_overflow_dont, /* complain_on_overflow */ | |
1483 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1484 | "R_PPC64_TPREL16_HI", /* name */ | |
1485 | FALSE, /* partial_inplace */ | |
1486 | 0, /* src_mask */ | |
1487 | 0xffff, /* dst_mask */ | |
1488 | FALSE), /* pcrel_offset */ | |
1489 | ||
1490 | /* Like TPREL16_HI, but adjust for low 16 bits. */ | |
1491 | HOWTO (R_PPC64_TPREL16_HA, | |
1492 | 16, /* rightshift */ | |
1493 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1494 | 16, /* bitsize */ | |
1495 | FALSE, /* pc_relative */ | |
1496 | 0, /* bitpos */ | |
1497 | complain_overflow_dont, /* complain_on_overflow */ | |
1498 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1499 | "R_PPC64_TPREL16_HA", /* name */ | |
1500 | FALSE, /* partial_inplace */ | |
1501 | 0, /* src_mask */ | |
1502 | 0xffff, /* dst_mask */ | |
1503 | FALSE), /* pcrel_offset */ | |
1504 | ||
1505 | /* Like TPREL16_HI, but next higher group of 16 bits. */ | |
1506 | HOWTO (R_PPC64_TPREL16_HIGHER, | |
1507 | 32, /* rightshift */ | |
1508 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1509 | 16, /* bitsize */ | |
1510 | FALSE, /* pc_relative */ | |
1511 | 0, /* bitpos */ | |
1512 | complain_overflow_dont, /* complain_on_overflow */ | |
1513 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1514 | "R_PPC64_TPREL16_HIGHER", /* name */ | |
1515 | FALSE, /* partial_inplace */ | |
1516 | 0, /* src_mask */ | |
1517 | 0xffff, /* dst_mask */ | |
1518 | FALSE), /* pcrel_offset */ | |
1519 | ||
1520 | /* Like TPREL16_HIGHER, but adjust for low 16 bits. */ | |
1521 | HOWTO (R_PPC64_TPREL16_HIGHERA, | |
1522 | 32, /* rightshift */ | |
1523 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1524 | 16, /* bitsize */ | |
1525 | FALSE, /* pc_relative */ | |
1526 | 0, /* bitpos */ | |
1527 | complain_overflow_dont, /* complain_on_overflow */ | |
1528 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1529 | "R_PPC64_TPREL16_HIGHERA", /* name */ | |
1530 | FALSE, /* partial_inplace */ | |
1531 | 0, /* src_mask */ | |
1532 | 0xffff, /* dst_mask */ | |
1533 | FALSE), /* pcrel_offset */ | |
1534 | ||
1535 | /* Like TPREL16_HIGHER, but next higher group of 16 bits. */ | |
1536 | HOWTO (R_PPC64_TPREL16_HIGHEST, | |
1537 | 48, /* rightshift */ | |
1538 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1539 | 16, /* bitsize */ | |
1540 | FALSE, /* pc_relative */ | |
1541 | 0, /* bitpos */ | |
1542 | complain_overflow_dont, /* complain_on_overflow */ | |
1543 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1544 | "R_PPC64_TPREL16_HIGHEST", /* name */ | |
1545 | FALSE, /* partial_inplace */ | |
1546 | 0, /* src_mask */ | |
1547 | 0xffff, /* dst_mask */ | |
1548 | FALSE), /* pcrel_offset */ | |
1549 | ||
1550 | /* Like TPREL16_HIGHEST, but adjust for low 16 bits. */ | |
1551 | HOWTO (R_PPC64_TPREL16_HIGHESTA, | |
1552 | 48, /* rightshift */ | |
1553 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1554 | 16, /* bitsize */ | |
1555 | FALSE, /* pc_relative */ | |
1556 | 0, /* bitpos */ | |
1557 | complain_overflow_dont, /* complain_on_overflow */ | |
1558 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1559 | "R_PPC64_TPREL16_HIGHESTA", /* name */ | |
1560 | FALSE, /* partial_inplace */ | |
1561 | 0, /* src_mask */ | |
1562 | 0xffff, /* dst_mask */ | |
1563 | FALSE), /* pcrel_offset */ | |
1564 | ||
1565 | /* Like TPREL16, but for insns with a DS field. */ | |
1566 | HOWTO (R_PPC64_TPREL16_DS, | |
1567 | 0, /* rightshift */ | |
1568 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1569 | 16, /* bitsize */ | |
1570 | FALSE, /* pc_relative */ | |
1571 | 0, /* bitpos */ | |
1572 | complain_overflow_signed, /* complain_on_overflow */ | |
1573 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1574 | "R_PPC64_TPREL16_DS", /* name */ | |
1575 | FALSE, /* partial_inplace */ | |
1576 | 0, /* src_mask */ | |
1577 | 0xfffc, /* dst_mask */ | |
1578 | FALSE), /* pcrel_offset */ | |
1579 | ||
1580 | /* Like TPREL16_DS, but no overflow. */ | |
1581 | HOWTO (R_PPC64_TPREL16_LO_DS, | |
1582 | 0, /* rightshift */ | |
1583 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1584 | 16, /* bitsize */ | |
1585 | FALSE, /* pc_relative */ | |
1586 | 0, /* bitpos */ | |
1587 | complain_overflow_dont, /* complain_on_overflow */ | |
1588 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1589 | "R_PPC64_TPREL16_LO_DS", /* name */ | |
1590 | FALSE, /* partial_inplace */ | |
1591 | 0, /* src_mask */ | |
1592 | 0xfffc, /* dst_mask */ | |
1593 | FALSE), /* pcrel_offset */ | |
1594 | ||
1595 | /* Allocates two contiguous entries in the GOT to hold a tls_index structure, | |
1596 | with values (sym+add)@dtpmod and (sym+add)@dtprel, and computes the offset | |
1597 | to the first entry relative to the TOC base (r2). */ | |
1598 | HOWTO (R_PPC64_GOT_TLSGD16, | |
1599 | 0, /* rightshift */ | |
1600 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1601 | 16, /* bitsize */ | |
1602 | FALSE, /* pc_relative */ | |
1603 | 0, /* bitpos */ | |
1604 | complain_overflow_signed, /* complain_on_overflow */ | |
1605 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1606 | "R_PPC64_GOT_TLSGD16", /* name */ | |
b34976b6 | 1607 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
1608 | 0, /* src_mask */ |
1609 | 0xffff, /* dst_mask */ | |
b34976b6 | 1610 | FALSE), /* pcrel_offset */ |
5bd4f169 | 1611 | |
411e1bfb AM |
1612 | /* Like GOT_TLSGD16, but no overflow. */ |
1613 | HOWTO (R_PPC64_GOT_TLSGD16_LO, | |
5bd4f169 AM |
1614 | 0, /* rightshift */ |
1615 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1616 | 16, /* bitsize */ | |
b34976b6 | 1617 | FALSE, /* pc_relative */ |
5bd4f169 AM |
1618 | 0, /* bitpos */ |
1619 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 1620 | ppc64_elf_unhandled_reloc, /* special_function */ |
411e1bfb | 1621 | "R_PPC64_GOT_TLSGD16_LO", /* name */ |
b34976b6 | 1622 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
1623 | 0, /* src_mask */ |
1624 | 0xffff, /* dst_mask */ | |
b34976b6 | 1625 | FALSE), /* pcrel_offset */ |
5bd4f169 | 1626 | |
411e1bfb AM |
1627 | /* Like GOT_TLSGD16_LO, but next higher group of 16 bits. */ |
1628 | HOWTO (R_PPC64_GOT_TLSGD16_HI, | |
5bd4f169 AM |
1629 | 16, /* rightshift */ |
1630 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1631 | 16, /* bitsize */ | |
b34976b6 | 1632 | FALSE, /* pc_relative */ |
5bd4f169 AM |
1633 | 0, /* bitpos */ |
1634 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 1635 | ppc64_elf_unhandled_reloc, /* special_function */ |
411e1bfb | 1636 | "R_PPC64_GOT_TLSGD16_HI", /* name */ |
b34976b6 | 1637 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
1638 | 0, /* src_mask */ |
1639 | 0xffff, /* dst_mask */ | |
b34976b6 | 1640 | FALSE), /* pcrel_offset */ |
5bd4f169 | 1641 | |
411e1bfb AM |
1642 | /* Like GOT_TLSGD16_HI, but adjust for low 16 bits. */ |
1643 | HOWTO (R_PPC64_GOT_TLSGD16_HA, | |
5bd4f169 AM |
1644 | 16, /* rightshift */ |
1645 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1646 | 16, /* bitsize */ | |
b34976b6 | 1647 | FALSE, /* pc_relative */ |
5bd4f169 | 1648 | 0, /* bitpos */ |
411e1bfb | 1649 | complain_overflow_dont, /* complain_on_overflow */ |
805fc799 | 1650 | ppc64_elf_unhandled_reloc, /* special_function */ |
411e1bfb | 1651 | "R_PPC64_GOT_TLSGD16_HA", /* name */ |
b34976b6 | 1652 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
1653 | 0, /* src_mask */ |
1654 | 0xffff, /* dst_mask */ | |
b34976b6 | 1655 | FALSE), /* pcrel_offset */ |
5bd4f169 | 1656 | |
411e1bfb AM |
1657 | /* Allocates two contiguous entries in the GOT to hold a tls_index structure, |
1658 | with values (sym+add)@dtpmod and zero, and computes the offset to the | |
1659 | first entry relative to the TOC base (r2). */ | |
1660 | HOWTO (R_PPC64_GOT_TLSLD16, | |
5bd4f169 AM |
1661 | 0, /* rightshift */ |
1662 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1663 | 16, /* bitsize */ | |
b34976b6 | 1664 | FALSE, /* pc_relative */ |
5bd4f169 | 1665 | 0, /* bitpos */ |
411e1bfb AM |
1666 | complain_overflow_signed, /* complain_on_overflow */ |
1667 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1668 | "R_PPC64_GOT_TLSLD16", /* name */ | |
b34976b6 | 1669 | FALSE, /* partial_inplace */ |
d006db6c | 1670 | 0, /* src_mask */ |
411e1bfb | 1671 | 0xffff, /* dst_mask */ |
b34976b6 | 1672 | FALSE), /* pcrel_offset */ |
5bd4f169 | 1673 | |
411e1bfb AM |
1674 | /* Like GOT_TLSLD16, but no overflow. */ |
1675 | HOWTO (R_PPC64_GOT_TLSLD16_LO, | |
5bd4f169 AM |
1676 | 0, /* rightshift */ |
1677 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1678 | 16, /* bitsize */ | |
b34976b6 | 1679 | FALSE, /* pc_relative */ |
5bd4f169 | 1680 | 0, /* bitpos */ |
411e1bfb AM |
1681 | complain_overflow_dont, /* complain_on_overflow */ |
1682 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1683 | "R_PPC64_GOT_TLSLD16_LO", /* name */ | |
b34976b6 | 1684 | FALSE, /* partial_inplace */ |
d006db6c | 1685 | 0, /* src_mask */ |
411e1bfb | 1686 | 0xffff, /* dst_mask */ |
b34976b6 | 1687 | FALSE), /* pcrel_offset */ |
5bd4f169 | 1688 | |
411e1bfb AM |
1689 | /* Like GOT_TLSLD16_LO, but next higher group of 16 bits. */ |
1690 | HOWTO (R_PPC64_GOT_TLSLD16_HI, | |
1691 | 16, /* rightshift */ | |
5bd4f169 AM |
1692 | 1, /* size (0 = byte, 1 = short, 2 = long) */ |
1693 | 16, /* bitsize */ | |
b34976b6 | 1694 | FALSE, /* pc_relative */ |
5bd4f169 | 1695 | 0, /* bitpos */ |
411e1bfb | 1696 | complain_overflow_dont, /* complain_on_overflow */ |
805fc799 | 1697 | ppc64_elf_unhandled_reloc, /* special_function */ |
411e1bfb | 1698 | "R_PPC64_GOT_TLSLD16_HI", /* name */ |
b34976b6 | 1699 | FALSE, /* partial_inplace */ |
d006db6c | 1700 | 0, /* src_mask */ |
411e1bfb | 1701 | 0xffff, /* dst_mask */ |
b34976b6 | 1702 | FALSE), /* pcrel_offset */ |
5bd4f169 | 1703 | |
411e1bfb AM |
1704 | /* Like GOT_TLSLD16_HI, but adjust for low 16 bits. */ |
1705 | HOWTO (R_PPC64_GOT_TLSLD16_HA, | |
1706 | 16, /* rightshift */ | |
5bd4f169 AM |
1707 | 1, /* size (0 = byte, 1 = short, 2 = long) */ |
1708 | 16, /* bitsize */ | |
b34976b6 | 1709 | FALSE, /* pc_relative */ |
5bd4f169 AM |
1710 | 0, /* bitpos */ |
1711 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 1712 | ppc64_elf_unhandled_reloc, /* special_function */ |
411e1bfb | 1713 | "R_PPC64_GOT_TLSLD16_HA", /* name */ |
b34976b6 | 1714 | FALSE, /* partial_inplace */ |
d006db6c | 1715 | 0, /* src_mask */ |
411e1bfb | 1716 | 0xffff, /* dst_mask */ |
b34976b6 | 1717 | FALSE), /* pcrel_offset */ |
5bd4f169 | 1718 | |
411e1bfb AM |
1719 | /* Allocates an entry in the GOT with value (sym+add)@dtprel, and computes |
1720 | the offset to the entry relative to the TOC base (r2). */ | |
1721 | HOWTO (R_PPC64_GOT_DTPREL16_DS, | |
5bd4f169 AM |
1722 | 0, /* rightshift */ |
1723 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1724 | 16, /* bitsize */ | |
b34976b6 | 1725 | FALSE, /* pc_relative */ |
5bd4f169 | 1726 | 0, /* bitpos */ |
411e1bfb | 1727 | complain_overflow_signed, /* complain_on_overflow */ |
805fc799 | 1728 | ppc64_elf_unhandled_reloc, /* special_function */ |
411e1bfb | 1729 | "R_PPC64_GOT_DTPREL16_DS", /* name */ |
b34976b6 | 1730 | FALSE, /* partial_inplace */ |
d006db6c | 1731 | 0, /* src_mask */ |
5bd4f169 | 1732 | 0xfffc, /* dst_mask */ |
b34976b6 | 1733 | FALSE), /* pcrel_offset */ |
5bd4f169 | 1734 | |
411e1bfb AM |
1735 | /* Like GOT_DTPREL16_DS, but no overflow. */ |
1736 | HOWTO (R_PPC64_GOT_DTPREL16_LO_DS, | |
5bd4f169 | 1737 | 0, /* rightshift */ |
c061c2d8 AM |
1738 | 1, /* size (0 = byte, 1 = short, 2 = long) */ |
1739 | 16, /* bitsize */ | |
b34976b6 | 1740 | FALSE, /* pc_relative */ |
5bd4f169 | 1741 | 0, /* bitpos */ |
411e1bfb AM |
1742 | complain_overflow_dont, /* complain_on_overflow */ |
1743 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1744 | "R_PPC64_GOT_DTPREL16_LO_DS", /* name */ | |
b34976b6 | 1745 | FALSE, /* partial_inplace */ |
d006db6c | 1746 | 0, /* src_mask */ |
c061c2d8 | 1747 | 0xfffc, /* dst_mask */ |
b34976b6 | 1748 | FALSE), /* pcrel_offset */ |
5bd4f169 | 1749 | |
411e1bfb AM |
1750 | /* Like GOT_DTPREL16_LO_DS, but next higher group of 16 bits. */ |
1751 | HOWTO (R_PPC64_GOT_DTPREL16_HI, | |
1752 | 16, /* rightshift */ | |
5bd4f169 AM |
1753 | 1, /* size (0 = byte, 1 = short, 2 = long) */ |
1754 | 16, /* bitsize */ | |
b34976b6 | 1755 | FALSE, /* pc_relative */ |
5bd4f169 AM |
1756 | 0, /* bitpos */ |
1757 | complain_overflow_dont, /* complain_on_overflow */ | |
411e1bfb AM |
1758 | ppc64_elf_unhandled_reloc, /* special_function */ |
1759 | "R_PPC64_GOT_DTPREL16_HI", /* name */ | |
b34976b6 | 1760 | FALSE, /* partial_inplace */ |
d006db6c | 1761 | 0, /* src_mask */ |
411e1bfb | 1762 | 0xffff, /* dst_mask */ |
b34976b6 | 1763 | FALSE), /* pcrel_offset */ |
5bd4f169 | 1764 | |
411e1bfb AM |
1765 | /* Like GOT_DTPREL16_HI, but adjust for low 16 bits. */ |
1766 | HOWTO (R_PPC64_GOT_DTPREL16_HA, | |
1767 | 16, /* rightshift */ | |
1768 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1769 | 16, /* bitsize */ | |
1770 | FALSE, /* pc_relative */ | |
1771 | 0, /* bitpos */ | |
1772 | complain_overflow_dont, /* complain_on_overflow */ | |
1773 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1774 | "R_PPC64_GOT_DTPREL16_HA", /* name */ | |
1775 | FALSE, /* partial_inplace */ | |
1776 | 0, /* src_mask */ | |
1777 | 0xffff, /* dst_mask */ | |
1778 | FALSE), /* pcrel_offset */ | |
1779 | ||
1780 | /* Allocates an entry in the GOT with value (sym+add)@tprel, and computes the | |
1781 | offset to the entry relative to the TOC base (r2). */ | |
1782 | HOWTO (R_PPC64_GOT_TPREL16_DS, | |
5bd4f169 AM |
1783 | 0, /* rightshift */ |
1784 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1785 | 16, /* bitsize */ | |
b34976b6 | 1786 | FALSE, /* pc_relative */ |
5bd4f169 AM |
1787 | 0, /* bitpos */ |
1788 | complain_overflow_signed, /* complain_on_overflow */ | |
411e1bfb AM |
1789 | ppc64_elf_unhandled_reloc, /* special_function */ |
1790 | "R_PPC64_GOT_TPREL16_DS", /* name */ | |
b34976b6 | 1791 | FALSE, /* partial_inplace */ |
d006db6c | 1792 | 0, /* src_mask */ |
ad8e1ba5 | 1793 | 0xfffc, /* dst_mask */ |
b34976b6 | 1794 | FALSE), /* pcrel_offset */ |
5bd4f169 | 1795 | |
411e1bfb AM |
1796 | /* Like GOT_TPREL16_DS, but no overflow. */ |
1797 | HOWTO (R_PPC64_GOT_TPREL16_LO_DS, | |
5bd4f169 AM |
1798 | 0, /* rightshift */ |
1799 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1800 | 16, /* bitsize */ | |
b34976b6 | 1801 | FALSE, /* pc_relative */ |
5bd4f169 AM |
1802 | 0, /* bitpos */ |
1803 | complain_overflow_dont, /* complain_on_overflow */ | |
411e1bfb AM |
1804 | ppc64_elf_unhandled_reloc, /* special_function */ |
1805 | "R_PPC64_GOT_TPREL16_LO_DS", /* name */ | |
b34976b6 | 1806 | FALSE, /* partial_inplace */ |
d006db6c | 1807 | 0, /* src_mask */ |
ad8e1ba5 | 1808 | 0xfffc, /* dst_mask */ |
b34976b6 | 1809 | FALSE), /* pcrel_offset */ |
5bd4f169 | 1810 | |
411e1bfb AM |
1811 | /* Like GOT_TPREL16_LO_DS, but next higher group of 16 bits. */ |
1812 | HOWTO (R_PPC64_GOT_TPREL16_HI, | |
1813 | 16, /* rightshift */ | |
5bd4f169 AM |
1814 | 1, /* size (0 = byte, 1 = short, 2 = long) */ |
1815 | 16, /* bitsize */ | |
b34976b6 | 1816 | FALSE, /* pc_relative */ |
5bd4f169 | 1817 | 0, /* bitpos */ |
411e1bfb | 1818 | complain_overflow_dont, /* complain_on_overflow */ |
805fc799 | 1819 | ppc64_elf_unhandled_reloc, /* special_function */ |
411e1bfb | 1820 | "R_PPC64_GOT_TPREL16_HI", /* name */ |
b34976b6 | 1821 | FALSE, /* partial_inplace */ |
d006db6c | 1822 | 0, /* src_mask */ |
411e1bfb | 1823 | 0xffff, /* dst_mask */ |
b34976b6 | 1824 | FALSE), /* pcrel_offset */ |
5bd4f169 | 1825 | |
411e1bfb AM |
1826 | /* Like GOT_TPREL16_HI, but adjust for low 16 bits. */ |
1827 | HOWTO (R_PPC64_GOT_TPREL16_HA, | |
1828 | 16, /* rightshift */ | |
5bd4f169 AM |
1829 | 1, /* size (0 = byte, 1 = short, 2 = long) */ |
1830 | 16, /* bitsize */ | |
b34976b6 | 1831 | FALSE, /* pc_relative */ |
5bd4f169 AM |
1832 | 0, /* bitpos */ |
1833 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 1834 | ppc64_elf_unhandled_reloc, /* special_function */ |
411e1bfb | 1835 | "R_PPC64_GOT_TPREL16_HA", /* name */ |
b34976b6 | 1836 | FALSE, /* partial_inplace */ |
d006db6c | 1837 | 0, /* src_mask */ |
411e1bfb | 1838 | 0xffff, /* dst_mask */ |
b34976b6 | 1839 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
1840 | |
1841 | /* GNU extension to record C++ vtable hierarchy. */ | |
1842 | HOWTO (R_PPC64_GNU_VTINHERIT, /* type */ | |
1843 | 0, /* rightshift */ | |
1844 | 0, /* size (0 = byte, 1 = short, 2 = long) */ | |
1845 | 0, /* bitsize */ | |
b34976b6 | 1846 | FALSE, /* pc_relative */ |
5bd4f169 AM |
1847 | 0, /* bitpos */ |
1848 | complain_overflow_dont, /* complain_on_overflow */ | |
1849 | NULL, /* special_function */ | |
1850 | "R_PPC64_GNU_VTINHERIT", /* name */ | |
b34976b6 | 1851 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
1852 | 0, /* src_mask */ |
1853 | 0, /* dst_mask */ | |
b34976b6 | 1854 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
1855 | |
1856 | /* GNU extension to record C++ vtable member usage. */ | |
1857 | HOWTO (R_PPC64_GNU_VTENTRY, /* type */ | |
1858 | 0, /* rightshift */ | |
1859 | 0, /* size (0 = byte, 1 = short, 2 = long) */ | |
1860 | 0, /* bitsize */ | |
b34976b6 | 1861 | FALSE, /* pc_relative */ |
5bd4f169 AM |
1862 | 0, /* bitpos */ |
1863 | complain_overflow_dont, /* complain_on_overflow */ | |
1864 | NULL, /* special_function */ | |
1865 | "R_PPC64_GNU_VTENTRY", /* name */ | |
b34976b6 | 1866 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
1867 | 0, /* src_mask */ |
1868 | 0, /* dst_mask */ | |
b34976b6 | 1869 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
1870 | }; |
1871 | ||
1872 | \f | |
1873 | /* Initialize the ppc64_elf_howto_table, so that linear accesses can | |
1874 | be done. */ | |
1875 | ||
1876 | static void | |
4ce794b7 | 1877 | ppc_howto_init (void) |
5bd4f169 AM |
1878 | { |
1879 | unsigned int i, type; | |
1880 | ||
1881 | for (i = 0; | |
1882 | i < sizeof (ppc64_elf_howto_raw) / sizeof (ppc64_elf_howto_raw[0]); | |
1883 | i++) | |
1884 | { | |
1885 | type = ppc64_elf_howto_raw[i].type; | |
1886 | BFD_ASSERT (type < (sizeof (ppc64_elf_howto_table) | |
1887 | / sizeof (ppc64_elf_howto_table[0]))); | |
1888 | ppc64_elf_howto_table[type] = &ppc64_elf_howto_raw[i]; | |
1889 | } | |
1890 | } | |
1891 | ||
1892 | static reloc_howto_type * | |
4ce794b7 AM |
1893 | ppc64_elf_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED, |
1894 | bfd_reloc_code_real_type code) | |
5bd4f169 | 1895 | { |
411e1bfb | 1896 | enum elf_ppc64_reloc_type r = R_PPC64_NONE; |
5bd4f169 AM |
1897 | |
1898 | if (!ppc64_elf_howto_table[R_PPC64_ADDR32]) | |
1899 | /* Initialize howto table if needed. */ | |
1900 | ppc_howto_init (); | |
1901 | ||
4ce794b7 | 1902 | switch (code) |
5bd4f169 AM |
1903 | { |
1904 | default: | |
4ce794b7 | 1905 | return NULL; |
5bd4f169 | 1906 | |
411e1bfb AM |
1907 | case BFD_RELOC_NONE: r = R_PPC64_NONE; |
1908 | break; | |
1909 | case BFD_RELOC_32: r = R_PPC64_ADDR32; | |
1910 | break; | |
1911 | case BFD_RELOC_PPC_BA26: r = R_PPC64_ADDR24; | |
1912 | break; | |
1913 | case BFD_RELOC_16: r = R_PPC64_ADDR16; | |
1914 | break; | |
1915 | case BFD_RELOC_LO16: r = R_PPC64_ADDR16_LO; | |
1916 | break; | |
1917 | case BFD_RELOC_HI16: r = R_PPC64_ADDR16_HI; | |
1918 | break; | |
1919 | case BFD_RELOC_HI16_S: r = R_PPC64_ADDR16_HA; | |
5bd4f169 | 1920 | break; |
411e1bfb | 1921 | case BFD_RELOC_PPC_BA16: r = R_PPC64_ADDR14; |
5bd4f169 | 1922 | break; |
411e1bfb | 1923 | case BFD_RELOC_PPC_BA16_BRTAKEN: r = R_PPC64_ADDR14_BRTAKEN; |
5bd4f169 | 1924 | break; |
411e1bfb | 1925 | case BFD_RELOC_PPC_BA16_BRNTAKEN: r = R_PPC64_ADDR14_BRNTAKEN; |
5bd4f169 | 1926 | break; |
411e1bfb | 1927 | case BFD_RELOC_PPC_B26: r = R_PPC64_REL24; |
5bd4f169 | 1928 | break; |
411e1bfb | 1929 | case BFD_RELOC_PPC_B16: r = R_PPC64_REL14; |
5bd4f169 | 1930 | break; |
411e1bfb | 1931 | case BFD_RELOC_PPC_B16_BRTAKEN: r = R_PPC64_REL14_BRTAKEN; |
5bd4f169 | 1932 | break; |
411e1bfb | 1933 | case BFD_RELOC_PPC_B16_BRNTAKEN: r = R_PPC64_REL14_BRNTAKEN; |
5bd4f169 | 1934 | break; |
411e1bfb | 1935 | case BFD_RELOC_16_GOTOFF: r = R_PPC64_GOT16; |
5bd4f169 | 1936 | break; |
411e1bfb | 1937 | case BFD_RELOC_LO16_GOTOFF: r = R_PPC64_GOT16_LO; |
5bd4f169 | 1938 | break; |
411e1bfb | 1939 | case BFD_RELOC_HI16_GOTOFF: r = R_PPC64_GOT16_HI; |
5bd4f169 | 1940 | break; |
411e1bfb | 1941 | case BFD_RELOC_HI16_S_GOTOFF: r = R_PPC64_GOT16_HA; |
5bd4f169 | 1942 | break; |
411e1bfb | 1943 | case BFD_RELOC_PPC_COPY: r = R_PPC64_COPY; |
5bd4f169 | 1944 | break; |
411e1bfb | 1945 | case BFD_RELOC_PPC_GLOB_DAT: r = R_PPC64_GLOB_DAT; |
5bd4f169 | 1946 | break; |
411e1bfb | 1947 | case BFD_RELOC_32_PCREL: r = R_PPC64_REL32; |
5bd4f169 | 1948 | break; |
411e1bfb | 1949 | case BFD_RELOC_32_PLTOFF: r = R_PPC64_PLT32; |
5bd4f169 | 1950 | break; |
411e1bfb | 1951 | case BFD_RELOC_32_PLT_PCREL: r = R_PPC64_PLTREL32; |
5bd4f169 | 1952 | break; |
411e1bfb | 1953 | case BFD_RELOC_LO16_PLTOFF: r = R_PPC64_PLT16_LO; |
5bd4f169 | 1954 | break; |
411e1bfb | 1955 | case BFD_RELOC_HI16_PLTOFF: r = R_PPC64_PLT16_HI; |
5bd4f169 | 1956 | break; |
411e1bfb | 1957 | case BFD_RELOC_HI16_S_PLTOFF: r = R_PPC64_PLT16_HA; |
5bd4f169 | 1958 | break; |
411e1bfb | 1959 | case BFD_RELOC_16_BASEREL: r = R_PPC64_SECTOFF; |
5bd4f169 | 1960 | break; |
411e1bfb | 1961 | case BFD_RELOC_LO16_BASEREL: r = R_PPC64_SECTOFF_LO; |
5bd4f169 | 1962 | break; |
411e1bfb | 1963 | case BFD_RELOC_HI16_BASEREL: r = R_PPC64_SECTOFF_HI; |
5bd4f169 | 1964 | break; |
411e1bfb | 1965 | case BFD_RELOC_HI16_S_BASEREL: r = R_PPC64_SECTOFF_HA; |
5bd4f169 | 1966 | break; |
411e1bfb | 1967 | case BFD_RELOC_CTOR: r = R_PPC64_ADDR64; |
5bd4f169 | 1968 | break; |
411e1bfb | 1969 | case BFD_RELOC_64: r = R_PPC64_ADDR64; |
5bd4f169 | 1970 | break; |
411e1bfb | 1971 | case BFD_RELOC_PPC64_HIGHER: r = R_PPC64_ADDR16_HIGHER; |
5bd4f169 | 1972 | break; |
411e1bfb | 1973 | case BFD_RELOC_PPC64_HIGHER_S: r = R_PPC64_ADDR16_HIGHERA; |
5bd4f169 | 1974 | break; |
411e1bfb | 1975 | case BFD_RELOC_PPC64_HIGHEST: r = R_PPC64_ADDR16_HIGHEST; |
5bd4f169 | 1976 | break; |
411e1bfb | 1977 | case BFD_RELOC_PPC64_HIGHEST_S: r = R_PPC64_ADDR16_HIGHESTA; |
5bd4f169 | 1978 | break; |
411e1bfb | 1979 | case BFD_RELOC_64_PCREL: r = R_PPC64_REL64; |
5bd4f169 | 1980 | break; |
411e1bfb | 1981 | case BFD_RELOC_64_PLTOFF: r = R_PPC64_PLT64; |
5bd4f169 | 1982 | break; |
411e1bfb | 1983 | case BFD_RELOC_64_PLT_PCREL: r = R_PPC64_PLTREL64; |
5bd4f169 | 1984 | break; |
411e1bfb | 1985 | case BFD_RELOC_PPC_TOC16: r = R_PPC64_TOC16; |
5bd4f169 | 1986 | break; |
411e1bfb | 1987 | case BFD_RELOC_PPC64_TOC16_LO: r = R_PPC64_TOC16_LO; |
5bd4f169 | 1988 | break; |
411e1bfb | 1989 | case BFD_RELOC_PPC64_TOC16_HI: r = R_PPC64_TOC16_HI; |
5bd4f169 | 1990 | break; |
411e1bfb | 1991 | case BFD_RELOC_PPC64_TOC16_HA: r = R_PPC64_TOC16_HA; |
5bd4f169 | 1992 | break; |
411e1bfb | 1993 | case BFD_RELOC_PPC64_TOC: r = R_PPC64_TOC; |
5bd4f169 | 1994 | break; |
411e1bfb | 1995 | case BFD_RELOC_PPC64_PLTGOT16: r = R_PPC64_PLTGOT16; |
5bd4f169 | 1996 | break; |
411e1bfb | 1997 | case BFD_RELOC_PPC64_PLTGOT16_LO: r = R_PPC64_PLTGOT16_LO; |
5bd4f169 | 1998 | break; |
411e1bfb | 1999 | case BFD_RELOC_PPC64_PLTGOT16_HI: r = R_PPC64_PLTGOT16_HI; |
5bd4f169 | 2000 | break; |
411e1bfb | 2001 | case BFD_RELOC_PPC64_PLTGOT16_HA: r = R_PPC64_PLTGOT16_HA; |
5bd4f169 | 2002 | break; |
411e1bfb | 2003 | case BFD_RELOC_PPC64_ADDR16_DS: r = R_PPC64_ADDR16_DS; |
5bd4f169 | 2004 | break; |
411e1bfb | 2005 | case BFD_RELOC_PPC64_ADDR16_LO_DS: r = R_PPC64_ADDR16_LO_DS; |
5bd4f169 | 2006 | break; |
411e1bfb | 2007 | case BFD_RELOC_PPC64_GOT16_DS: r = R_PPC64_GOT16_DS; |
5bd4f169 | 2008 | break; |
411e1bfb | 2009 | case BFD_RELOC_PPC64_GOT16_LO_DS: r = R_PPC64_GOT16_LO_DS; |
5bd4f169 | 2010 | break; |
411e1bfb | 2011 | case BFD_RELOC_PPC64_PLT16_LO_DS: r = R_PPC64_PLT16_LO_DS; |
5bd4f169 | 2012 | break; |
411e1bfb | 2013 | case BFD_RELOC_PPC64_SECTOFF_DS: r = R_PPC64_SECTOFF_DS; |
5bd4f169 | 2014 | break; |
411e1bfb | 2015 | case BFD_RELOC_PPC64_SECTOFF_LO_DS: r = R_PPC64_SECTOFF_LO_DS; |
5bd4f169 | 2016 | break; |
411e1bfb | 2017 | case BFD_RELOC_PPC64_TOC16_DS: r = R_PPC64_TOC16_DS; |
5bd4f169 | 2018 | break; |
411e1bfb | 2019 | case BFD_RELOC_PPC64_TOC16_LO_DS: r = R_PPC64_TOC16_LO_DS; |
5bd4f169 | 2020 | break; |
411e1bfb | 2021 | case BFD_RELOC_PPC64_PLTGOT16_DS: r = R_PPC64_PLTGOT16_DS; |
5bd4f169 | 2022 | break; |
411e1bfb | 2023 | case BFD_RELOC_PPC64_PLTGOT16_LO_DS: r = R_PPC64_PLTGOT16_LO_DS; |
5bd4f169 | 2024 | break; |
411e1bfb | 2025 | case BFD_RELOC_PPC_TLS: r = R_PPC64_TLS; |
5bd4f169 | 2026 | break; |
411e1bfb | 2027 | case BFD_RELOC_PPC_DTPMOD: r = R_PPC64_DTPMOD64; |
5bd4f169 | 2028 | break; |
411e1bfb | 2029 | case BFD_RELOC_PPC_TPREL16: r = R_PPC64_TPREL16; |
5bd4f169 | 2030 | break; |
411e1bfb | 2031 | case BFD_RELOC_PPC_TPREL16_LO: r = R_PPC64_TPREL16_LO; |
5bd4f169 | 2032 | break; |
411e1bfb | 2033 | case BFD_RELOC_PPC_TPREL16_HI: r = R_PPC64_TPREL16_HI; |
5bd4f169 | 2034 | break; |
411e1bfb | 2035 | case BFD_RELOC_PPC_TPREL16_HA: r = R_PPC64_TPREL16_HA; |
5bd4f169 | 2036 | break; |
411e1bfb | 2037 | case BFD_RELOC_PPC_TPREL: r = R_PPC64_TPREL64; |
5bd4f169 | 2038 | break; |
411e1bfb AM |
2039 | case BFD_RELOC_PPC_DTPREL16: r = R_PPC64_DTPREL16; |
2040 | break; | |
2041 | case BFD_RELOC_PPC_DTPREL16_LO: r = R_PPC64_DTPREL16_LO; | |
2042 | break; | |
2043 | case BFD_RELOC_PPC_DTPREL16_HI: r = R_PPC64_DTPREL16_HI; | |
2044 | break; | |
2045 | case BFD_RELOC_PPC_DTPREL16_HA: r = R_PPC64_DTPREL16_HA; | |
2046 | break; | |
2047 | case BFD_RELOC_PPC_DTPREL: r = R_PPC64_DTPREL64; | |
2048 | break; | |
2049 | case BFD_RELOC_PPC_GOT_TLSGD16: r = R_PPC64_GOT_TLSGD16; | |
2050 | break; | |
2051 | case BFD_RELOC_PPC_GOT_TLSGD16_LO: r = R_PPC64_GOT_TLSGD16_LO; | |
2052 | break; | |
2053 | case BFD_RELOC_PPC_GOT_TLSGD16_HI: r = R_PPC64_GOT_TLSGD16_HI; | |
2054 | break; | |
2055 | case BFD_RELOC_PPC_GOT_TLSGD16_HA: r = R_PPC64_GOT_TLSGD16_HA; | |
2056 | break; | |
2057 | case BFD_RELOC_PPC_GOT_TLSLD16: r = R_PPC64_GOT_TLSLD16; | |
2058 | break; | |
2059 | case BFD_RELOC_PPC_GOT_TLSLD16_LO: r = R_PPC64_GOT_TLSLD16_LO; | |
2060 | break; | |
2061 | case BFD_RELOC_PPC_GOT_TLSLD16_HI: r = R_PPC64_GOT_TLSLD16_HI; | |
2062 | break; | |
2063 | case BFD_RELOC_PPC_GOT_TLSLD16_HA: r = R_PPC64_GOT_TLSLD16_HA; | |
2064 | break; | |
2065 | case BFD_RELOC_PPC_GOT_TPREL16: r = R_PPC64_GOT_TPREL16_DS; | |
2066 | break; | |
2067 | case BFD_RELOC_PPC_GOT_TPREL16_LO: r = R_PPC64_GOT_TPREL16_LO_DS; | |
2068 | break; | |
2069 | case BFD_RELOC_PPC_GOT_TPREL16_HI: r = R_PPC64_GOT_TPREL16_HI; | |
2070 | break; | |
2071 | case BFD_RELOC_PPC_GOT_TPREL16_HA: r = R_PPC64_GOT_TPREL16_HA; | |
2072 | break; | |
2073 | case BFD_RELOC_PPC_GOT_DTPREL16: r = R_PPC64_GOT_DTPREL16_DS; | |
2074 | break; | |
2075 | case BFD_RELOC_PPC_GOT_DTPREL16_LO: r = R_PPC64_GOT_DTPREL16_LO_DS; | |
2076 | break; | |
2077 | case BFD_RELOC_PPC_GOT_DTPREL16_HI: r = R_PPC64_GOT_DTPREL16_HI; | |
2078 | break; | |
2079 | case BFD_RELOC_PPC_GOT_DTPREL16_HA: r = R_PPC64_GOT_DTPREL16_HA; | |
2080 | break; | |
2081 | case BFD_RELOC_PPC64_TPREL16_DS: r = R_PPC64_TPREL16_DS; | |
2082 | break; | |
2083 | case BFD_RELOC_PPC64_TPREL16_LO_DS: r = R_PPC64_TPREL16_LO_DS; | |
2084 | break; | |
2085 | case BFD_RELOC_PPC64_TPREL16_HIGHER: r = R_PPC64_TPREL16_HIGHER; | |
2086 | break; | |
2087 | case BFD_RELOC_PPC64_TPREL16_HIGHERA: r = R_PPC64_TPREL16_HIGHERA; | |
2088 | break; | |
2089 | case BFD_RELOC_PPC64_TPREL16_HIGHEST: r = R_PPC64_TPREL16_HIGHEST; | |
2090 | break; | |
2091 | case BFD_RELOC_PPC64_TPREL16_HIGHESTA: r = R_PPC64_TPREL16_HIGHESTA; | |
2092 | break; | |
2093 | case BFD_RELOC_PPC64_DTPREL16_DS: r = R_PPC64_DTPREL16_DS; | |
2094 | break; | |
2095 | case BFD_RELOC_PPC64_DTPREL16_LO_DS: r = R_PPC64_DTPREL16_LO_DS; | |
2096 | break; | |
2097 | case BFD_RELOC_PPC64_DTPREL16_HIGHER: r = R_PPC64_DTPREL16_HIGHER; | |
2098 | break; | |
2099 | case BFD_RELOC_PPC64_DTPREL16_HIGHERA: r = R_PPC64_DTPREL16_HIGHERA; | |
2100 | break; | |
2101 | case BFD_RELOC_PPC64_DTPREL16_HIGHEST: r = R_PPC64_DTPREL16_HIGHEST; | |
2102 | break; | |
2103 | case BFD_RELOC_PPC64_DTPREL16_HIGHESTA: r = R_PPC64_DTPREL16_HIGHESTA; | |
2104 | break; | |
2105 | case BFD_RELOC_VTABLE_INHERIT: r = R_PPC64_GNU_VTINHERIT; | |
2106 | break; | |
2107 | case BFD_RELOC_VTABLE_ENTRY: r = R_PPC64_GNU_VTENTRY; | |
5bd4f169 AM |
2108 | break; |
2109 | } | |
2110 | ||
4ce794b7 | 2111 | return ppc64_elf_howto_table[r]; |
5bd4f169 AM |
2112 | }; |
2113 | ||
2114 | /* Set the howto pointer for a PowerPC ELF reloc. */ | |
2115 | ||
2116 | static void | |
4ce794b7 AM |
2117 | ppc64_elf_info_to_howto (bfd *abfd ATTRIBUTE_UNUSED, arelent *cache_ptr, |
2118 | Elf_Internal_Rela *dst) | |
5bd4f169 | 2119 | { |
65f38f15 AM |
2120 | unsigned int type; |
2121 | ||
ef60b7ff | 2122 | /* Initialize howto table if needed. */ |
5bd4f169 | 2123 | if (!ppc64_elf_howto_table[R_PPC64_ADDR32]) |
5bd4f169 AM |
2124 | ppc_howto_init (); |
2125 | ||
65f38f15 | 2126 | type = ELF64_R_TYPE (dst->r_info); |
d0fb9a8d JJ |
2127 | if (type >= (sizeof (ppc64_elf_howto_table) |
2128 | / sizeof (ppc64_elf_howto_table[0]))) | |
2129 | { | |
2130 | (*_bfd_error_handler) (_("%B: invalid relocation type %d"), | |
3ec2b351 NC |
2131 | abfd, (int) type); |
2132 | type = R_PPC64_NONE; | |
d0fb9a8d | 2133 | } |
65f38f15 | 2134 | cache_ptr->howto = ppc64_elf_howto_table[type]; |
5bd4f169 AM |
2135 | } |
2136 | ||
04c9666a | 2137 | /* Handle the R_PPC64_ADDR16_HA and similar relocs. */ |
5bd4f169 AM |
2138 | |
2139 | static bfd_reloc_status_type | |
4ce794b7 AM |
2140 | ppc64_elf_ha_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, |
2141 | void *data, asection *input_section, | |
2142 | bfd *output_bfd, char **error_message) | |
5bd4f169 | 2143 | { |
805fc799 AM |
2144 | /* If this is a relocatable link (output_bfd test tells us), just |
2145 | call the generic function. Any adjustment will be done at final | |
2146 | link time. */ | |
2147 | if (output_bfd != NULL) | |
cedb70c5 | 2148 | return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, |
805fc799 AM |
2149 | input_section, output_bfd, error_message); |
2150 | ||
2151 | /* Adjust the addend for sign extension of the low 16 bits. | |
2152 | We won't actually be using the low 16 bits, so trashing them | |
2153 | doesn't matter. */ | |
2154 | reloc_entry->addend += 0x8000; | |
2155 | return bfd_reloc_continue; | |
2156 | } | |
5bd4f169 | 2157 | |
2441e016 AM |
2158 | static bfd_reloc_status_type |
2159 | ppc64_elf_branch_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, | |
2160 | void *data, asection *input_section, | |
2161 | bfd *output_bfd, char **error_message) | |
2162 | { | |
2163 | if (output_bfd != NULL) | |
2164 | return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, | |
2165 | input_section, output_bfd, error_message); | |
2166 | ||
699733f6 AM |
2167 | if (strcmp (symbol->section->name, ".opd") == 0 |
2168 | && (symbol->section->owner->flags & DYNAMIC) == 0) | |
2441e016 AM |
2169 | { |
2170 | bfd_vma dest = opd_entry_value (symbol->section, | |
2171 | symbol->value + reloc_entry->addend, | |
2172 | NULL, NULL); | |
2173 | if (dest != (bfd_vma) -1) | |
2174 | reloc_entry->addend = dest - (symbol->value | |
2175 | + symbol->section->output_section->vma | |
2176 | + symbol->section->output_offset); | |
2177 | } | |
2178 | return bfd_reloc_continue; | |
2179 | } | |
2180 | ||
805fc799 | 2181 | static bfd_reloc_status_type |
4ce794b7 AM |
2182 | ppc64_elf_brtaken_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, |
2183 | void *data, asection *input_section, | |
2184 | bfd *output_bfd, char **error_message) | |
805fc799 AM |
2185 | { |
2186 | long insn; | |
04c9666a | 2187 | enum elf_ppc64_reloc_type r_type; |
805fc799 AM |
2188 | bfd_size_type octets; |
2189 | /* Disabled until we sort out how ld should choose 'y' vs 'at'. */ | |
b34976b6 | 2190 | bfd_boolean is_power4 = FALSE; |
805fc799 AM |
2191 | |
2192 | /* If this is a relocatable link (output_bfd test tells us), just | |
2193 | call the generic function. Any adjustment will be done at final | |
2194 | link time. */ | |
5bd4f169 | 2195 | if (output_bfd != NULL) |
cedb70c5 | 2196 | return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, |
805fc799 AM |
2197 | input_section, output_bfd, error_message); |
2198 | ||
2199 | octets = reloc_entry->address * bfd_octets_per_byte (abfd); | |
2200 | insn = bfd_get_32 (abfd, (bfd_byte *) data + octets); | |
2201 | insn &= ~(0x01 << 21); | |
4ce794b7 | 2202 | r_type = reloc_entry->howto->type; |
805fc799 AM |
2203 | if (r_type == R_PPC64_ADDR14_BRTAKEN |
2204 | || r_type == R_PPC64_REL14_BRTAKEN) | |
cedb70c5 | 2205 | insn |= 0x01 << 21; /* 'y' or 't' bit, lowest bit of BO field. */ |
805fc799 AM |
2206 | |
2207 | if (is_power4) | |
5bd4f169 | 2208 | { |
805fc799 AM |
2209 | /* Set 'a' bit. This is 0b00010 in BO field for branch |
2210 | on CR(BI) insns (BO == 001at or 011at), and 0b01000 | |
2211 | for branch on CTR insns (BO == 1a00t or 1a01t). */ | |
2212 | if ((insn & (0x14 << 21)) == (0x04 << 21)) | |
2213 | insn |= 0x02 << 21; | |
2214 | else if ((insn & (0x14 << 21)) == (0x10 << 21)) | |
2215 | insn |= 0x08 << 21; | |
2216 | else | |
2441e016 | 2217 | goto out; |
5bd4f169 | 2218 | } |
805fc799 AM |
2219 | else |
2220 | { | |
2221 | bfd_vma target = 0; | |
2222 | bfd_vma from; | |
5bd4f169 | 2223 | |
805fc799 AM |
2224 | if (!bfd_is_com_section (symbol->section)) |
2225 | target = symbol->value; | |
2226 | target += symbol->section->output_section->vma; | |
2227 | target += symbol->section->output_offset; | |
2228 | target += reloc_entry->addend; | |
5bd4f169 | 2229 | |
805fc799 AM |
2230 | from = (reloc_entry->address |
2231 | + input_section->output_offset | |
2232 | + input_section->output_section->vma); | |
5bd4f169 | 2233 | |
805fc799 AM |
2234 | /* Invert 'y' bit if not the default. */ |
2235 | if ((bfd_signed_vma) (target - from) < 0) | |
2236 | insn ^= 0x01 << 21; | |
2237 | } | |
4ce794b7 | 2238 | bfd_put_32 (abfd, insn, (bfd_byte *) data + octets); |
2441e016 AM |
2239 | out: |
2240 | return ppc64_elf_branch_reloc (abfd, reloc_entry, symbol, data, | |
2241 | input_section, output_bfd, error_message); | |
805fc799 | 2242 | } |
5bd4f169 | 2243 | |
805fc799 | 2244 | static bfd_reloc_status_type |
4ce794b7 AM |
2245 | ppc64_elf_sectoff_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, |
2246 | void *data, asection *input_section, | |
2247 | bfd *output_bfd, char **error_message) | |
805fc799 AM |
2248 | { |
2249 | /* If this is a relocatable link (output_bfd test tells us), just | |
2250 | call the generic function. Any adjustment will be done at final | |
2251 | link time. */ | |
2252 | if (output_bfd != NULL) | |
cedb70c5 | 2253 | return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, |
805fc799 | 2254 | input_section, output_bfd, error_message); |
5bd4f169 | 2255 | |
805fc799 AM |
2256 | /* Subtract the symbol section base address. */ |
2257 | reloc_entry->addend -= symbol->section->output_section->vma; | |
5bd4f169 AM |
2258 | return bfd_reloc_continue; |
2259 | } | |
2260 | ||
805fc799 | 2261 | static bfd_reloc_status_type |
4ce794b7 AM |
2262 | ppc64_elf_sectoff_ha_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, |
2263 | void *data, asection *input_section, | |
2264 | bfd *output_bfd, char **error_message) | |
805fc799 AM |
2265 | { |
2266 | /* If this is a relocatable link (output_bfd test tells us), just | |
2267 | call the generic function. Any adjustment will be done at final | |
2268 | link time. */ | |
2269 | if (output_bfd != NULL) | |
cedb70c5 | 2270 | return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, |
805fc799 AM |
2271 | input_section, output_bfd, error_message); |
2272 | ||
2273 | /* Subtract the symbol section base address. */ | |
2274 | reloc_entry->addend -= symbol->section->output_section->vma; | |
2275 | ||
2276 | /* Adjust the addend for sign extension of the low 16 bits. */ | |
2277 | reloc_entry->addend += 0x8000; | |
2278 | return bfd_reloc_continue; | |
2279 | } | |
2280 | ||
2281 | static bfd_reloc_status_type | |
4ce794b7 AM |
2282 | ppc64_elf_toc_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, |
2283 | void *data, asection *input_section, | |
2284 | bfd *output_bfd, char **error_message) | |
805fc799 AM |
2285 | { |
2286 | bfd_vma TOCstart; | |
2287 | ||
2288 | /* If this is a relocatable link (output_bfd test tells us), just | |
2289 | call the generic function. Any adjustment will be done at final | |
2290 | link time. */ | |
2291 | if (output_bfd != NULL) | |
cedb70c5 | 2292 | return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, |
805fc799 AM |
2293 | input_section, output_bfd, error_message); |
2294 | ||
2295 | TOCstart = _bfd_get_gp_value (input_section->output_section->owner); | |
2296 | if (TOCstart == 0) | |
2297 | TOCstart = ppc64_elf_toc (input_section->output_section->owner); | |
2298 | ||
2299 | /* Subtract the TOC base address. */ | |
2300 | reloc_entry->addend -= TOCstart + TOC_BASE_OFF; | |
2301 | return bfd_reloc_continue; | |
2302 | } | |
2303 | ||
2304 | static bfd_reloc_status_type | |
4ce794b7 AM |
2305 | ppc64_elf_toc_ha_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, |
2306 | void *data, asection *input_section, | |
2307 | bfd *output_bfd, char **error_message) | |
805fc799 AM |
2308 | { |
2309 | bfd_vma TOCstart; | |
2310 | ||
2311 | /* If this is a relocatable link (output_bfd test tells us), just | |
2312 | call the generic function. Any adjustment will be done at final | |
2313 | link time. */ | |
2314 | if (output_bfd != NULL) | |
cedb70c5 | 2315 | return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, |
805fc799 AM |
2316 | input_section, output_bfd, error_message); |
2317 | ||
2318 | TOCstart = _bfd_get_gp_value (input_section->output_section->owner); | |
2319 | if (TOCstart == 0) | |
2320 | TOCstart = ppc64_elf_toc (input_section->output_section->owner); | |
2321 | ||
2322 | /* Subtract the TOC base address. */ | |
2323 | reloc_entry->addend -= TOCstart + TOC_BASE_OFF; | |
2324 | ||
2325 | /* Adjust the addend for sign extension of the low 16 bits. */ | |
2326 | reloc_entry->addend += 0x8000; | |
2327 | return bfd_reloc_continue; | |
2328 | } | |
2329 | ||
2330 | static bfd_reloc_status_type | |
4ce794b7 AM |
2331 | ppc64_elf_toc64_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, |
2332 | void *data, asection *input_section, | |
2333 | bfd *output_bfd, char **error_message) | |
805fc799 AM |
2334 | { |
2335 | bfd_vma TOCstart; | |
2336 | bfd_size_type octets; | |
2337 | ||
2338 | /* If this is a relocatable link (output_bfd test tells us), just | |
2339 | call the generic function. Any adjustment will be done at final | |
2340 | link time. */ | |
2341 | if (output_bfd != NULL) | |
cedb70c5 | 2342 | return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, |
805fc799 AM |
2343 | input_section, output_bfd, error_message); |
2344 | ||
2345 | TOCstart = _bfd_get_gp_value (input_section->output_section->owner); | |
2346 | if (TOCstart == 0) | |
2347 | TOCstart = ppc64_elf_toc (input_section->output_section->owner); | |
2348 | ||
2349 | octets = reloc_entry->address * bfd_octets_per_byte (abfd); | |
2350 | bfd_put_64 (abfd, TOCstart + TOC_BASE_OFF, (bfd_byte *) data + octets); | |
2351 | return bfd_reloc_ok; | |
2352 | } | |
2353 | ||
2354 | static bfd_reloc_status_type | |
4ce794b7 AM |
2355 | ppc64_elf_unhandled_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, |
2356 | void *data, asection *input_section, | |
2357 | bfd *output_bfd, char **error_message) | |
805fc799 AM |
2358 | { |
2359 | /* If this is a relocatable link (output_bfd test tells us), just | |
2360 | call the generic function. Any adjustment will be done at final | |
2361 | link time. */ | |
2362 | if (output_bfd != NULL) | |
cedb70c5 | 2363 | return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, |
805fc799 AM |
2364 | input_section, output_bfd, error_message); |
2365 | ||
2366 | if (error_message != NULL) | |
2367 | { | |
2368 | static char buf[60]; | |
2369 | sprintf (buf, "generic linker can't handle %s", | |
2370 | reloc_entry->howto->name); | |
2371 | *error_message = buf; | |
2372 | } | |
2373 | return bfd_reloc_dangerous; | |
2374 | } | |
2375 | ||
e717da7e AM |
2376 | struct ppc64_elf_obj_tdata |
2377 | { | |
2378 | struct elf_obj_tdata elf; | |
2379 | ||
2380 | /* Shortcuts to dynamic linker sections. */ | |
2381 | asection *got; | |
2382 | asection *relgot; | |
2383 | ||
b3fac117 AM |
2384 | /* Used during garbage collection. We attach global symbols defined |
2385 | on removed .opd entries to this section so that the sym is removed. */ | |
2386 | asection *deleted_section; | |
81688140 | 2387 | |
e717da7e AM |
2388 | /* TLS local dynamic got entry handling. Suppose for multiple GOT |
2389 | sections means we potentially need one of these for each input bfd. */ | |
2390 | union { | |
2391 | bfd_signed_vma refcount; | |
2392 | bfd_vma offset; | |
2393 | } tlsld_got; | |
8860955f AM |
2394 | |
2395 | /* A copy of relocs before they are modified for --emit-relocs. */ | |
2396 | Elf_Internal_Rela *opd_relocs; | |
e717da7e AM |
2397 | }; |
2398 | ||
2399 | #define ppc64_elf_tdata(bfd) \ | |
2400 | ((struct ppc64_elf_obj_tdata *) (bfd)->tdata.any) | |
2401 | ||
2402 | #define ppc64_tlsld_got(bfd) \ | |
2403 | (&ppc64_elf_tdata (bfd)->tlsld_got) | |
2404 | ||
2405 | /* Override the generic function because we store some extras. */ | |
2406 | ||
2407 | static bfd_boolean | |
2408 | ppc64_elf_mkobject (bfd *abfd) | |
2409 | { | |
e717da7e | 2410 | if (abfd->tdata.any == NULL) |
62d7a5f6 AM |
2411 | { |
2412 | bfd_size_type amt = sizeof (struct ppc64_elf_obj_tdata); | |
2413 | abfd->tdata.any = bfd_zalloc (abfd, amt); | |
2414 | if (abfd->tdata.any == NULL) | |
2415 | return FALSE; | |
2416 | } | |
2417 | return bfd_elf_mkobject (abfd); | |
e717da7e AM |
2418 | } |
2419 | ||
ee75fd95 AM |
2420 | /* Return 1 if target is one of ours. */ |
2421 | ||
7b53ace3 | 2422 | static bfd_boolean |
ee75fd95 | 2423 | is_ppc64_elf_target (const struct bfd_target *targ) |
7b53ace3 AM |
2424 | { |
2425 | extern const bfd_target bfd_elf64_powerpc_vec; | |
2426 | extern const bfd_target bfd_elf64_powerpcle_vec; | |
2427 | ||
2428 | return targ == &bfd_elf64_powerpc_vec || targ == &bfd_elf64_powerpcle_vec; | |
2429 | } | |
2430 | ||
feee612b AM |
2431 | /* Fix bad default arch selected for a 64 bit input bfd when the |
2432 | default is 32 bit. */ | |
2433 | ||
b34976b6 | 2434 | static bfd_boolean |
4ce794b7 | 2435 | ppc64_elf_object_p (bfd *abfd) |
feee612b AM |
2436 | { |
2437 | if (abfd->arch_info->the_default && abfd->arch_info->bits_per_word == 32) | |
2438 | { | |
2439 | Elf_Internal_Ehdr *i_ehdr = elf_elfheader (abfd); | |
2440 | ||
2441 | if (i_ehdr->e_ident[EI_CLASS] == ELFCLASS64) | |
2442 | { | |
2443 | /* Relies on arch after 32 bit default being 64 bit default. */ | |
2444 | abfd->arch_info = abfd->arch_info->next; | |
2445 | BFD_ASSERT (abfd->arch_info->bits_per_word == 64); | |
2446 | } | |
2447 | } | |
b34976b6 | 2448 | return TRUE; |
feee612b AM |
2449 | } |
2450 | ||
d37c89e5 AM |
2451 | /* Support for core dump NOTE sections. */ |
2452 | ||
2453 | static bfd_boolean | |
2454 | ppc64_elf_grok_prstatus (bfd *abfd, Elf_Internal_Note *note) | |
2455 | { | |
eea6121a | 2456 | size_t offset, size; |
d37c89e5 AM |
2457 | |
2458 | if (note->descsz != 504) | |
2459 | return FALSE; | |
2460 | ||
2461 | /* pr_cursig */ | |
2462 | elf_tdata (abfd)->core_signal = bfd_get_16 (abfd, note->descdata + 12); | |
2463 | ||
2464 | /* pr_pid */ | |
2465 | elf_tdata (abfd)->core_pid = bfd_get_32 (abfd, note->descdata + 32); | |
2466 | ||
2467 | /* pr_reg */ | |
2468 | offset = 112; | |
eea6121a | 2469 | size = 384; |
d37c89e5 AM |
2470 | |
2471 | /* Make a ".reg/999" section. */ | |
2472 | return _bfd_elfcore_make_pseudosection (abfd, ".reg", | |
eea6121a | 2473 | size, note->descpos + offset); |
d37c89e5 AM |
2474 | } |
2475 | ||
2476 | static bfd_boolean | |
2477 | ppc64_elf_grok_psinfo (bfd *abfd, Elf_Internal_Note *note) | |
2478 | { | |
2479 | if (note->descsz != 136) | |
2480 | return FALSE; | |
2481 | ||
2482 | elf_tdata (abfd)->core_program | |
2483 | = _bfd_elfcore_strndup (abfd, note->descdata + 40, 16); | |
2484 | elf_tdata (abfd)->core_command | |
2485 | = _bfd_elfcore_strndup (abfd, note->descdata + 56, 80); | |
2486 | ||
2487 | return TRUE; | |
2488 | } | |
2489 | ||
183e98be AM |
2490 | static char * |
2491 | ppc64_elf_write_core_note (bfd *abfd, char *buf, int *bufsiz, int note_type, | |
2492 | ...) | |
2493 | { | |
2494 | switch (note_type) | |
2495 | { | |
2496 | default: | |
2497 | return NULL; | |
2498 | ||
2499 | case NT_PRPSINFO: | |
2500 | { | |
2501 | char data[136]; | |
2502 | va_list ap; | |
2503 | ||
2504 | va_start (ap, note_type); | |
2505 | memset (data, 0, 40); | |
2506 | strncpy (data + 40, va_arg (ap, const char *), 16); | |
2507 | strncpy (data + 56, va_arg (ap, const char *), 80); | |
2508 | va_end (ap); | |
2509 | return elfcore_write_note (abfd, buf, bufsiz, | |
2510 | "CORE", note_type, data, sizeof (data)); | |
2511 | } | |
2512 | ||
2513 | case NT_PRSTATUS: | |
2514 | { | |
2515 | char data[504]; | |
2516 | va_list ap; | |
2517 | long pid; | |
2518 | int cursig; | |
2519 | const void *greg; | |
2520 | ||
2521 | va_start (ap, note_type); | |
2522 | memset (data, 0, 112); | |
2523 | pid = va_arg (ap, long); | |
2524 | bfd_put_32 (abfd, pid, data + 32); | |
2525 | cursig = va_arg (ap, int); | |
2526 | bfd_put_16 (abfd, cursig, data + 12); | |
2527 | greg = va_arg (ap, const void *); | |
2528 | memcpy (data + 112, greg, 384); | |
2529 | memset (data + 496, 0, 8); | |
2530 | va_end (ap); | |
2531 | return elfcore_write_note (abfd, buf, bufsiz, | |
2532 | "CORE", note_type, data, sizeof (data)); | |
2533 | } | |
2534 | } | |
2535 | } | |
2536 | ||
5bd4f169 AM |
2537 | /* Merge backend specific data from an object file to the output |
2538 | object file when linking. */ | |
2f6d9989 | 2539 | |
b34976b6 | 2540 | static bfd_boolean |
4ce794b7 | 2541 | ppc64_elf_merge_private_bfd_data (bfd *ibfd, bfd *obfd) |
5bd4f169 | 2542 | { |
5bd4f169 AM |
2543 | /* Check if we have the same endianess. */ |
2544 | if (ibfd->xvec->byteorder != obfd->xvec->byteorder | |
87e226ce | 2545 | && ibfd->xvec->byteorder != BFD_ENDIAN_UNKNOWN |
5bd4f169 AM |
2546 | && obfd->xvec->byteorder != BFD_ENDIAN_UNKNOWN) |
2547 | { | |
2548 | const char *msg; | |
2549 | ||
2550 | if (bfd_big_endian (ibfd)) | |
d003868e | 2551 | msg = _("%B: compiled for a big endian system " |
4ce794b7 | 2552 | "and target is little endian"); |
5bd4f169 | 2553 | else |
d003868e | 2554 | msg = _("%B: compiled for a little endian system " |
4ce794b7 | 2555 | "and target is big endian"); |
5bd4f169 | 2556 | |
d003868e | 2557 | (*_bfd_error_handler) (msg, ibfd); |
5bd4f169 AM |
2558 | |
2559 | bfd_set_error (bfd_error_wrong_format); | |
b34976b6 | 2560 | return FALSE; |
5bd4f169 AM |
2561 | } |
2562 | ||
b34976b6 | 2563 | return TRUE; |
5bd4f169 | 2564 | } |
f0abc2a1 | 2565 | |
5d35169e AM |
2566 | /* Add extra PPC sections. */ |
2567 | ||
b35d266b | 2568 | static const struct bfd_elf_special_section ppc64_elf_special_sections[]= |
7f4d3958 | 2569 | { |
0112cd26 NC |
2570 | { STRING_COMMA_LEN (".plt"), 0, SHT_NOBITS, 0 }, |
2571 | { STRING_COMMA_LEN (".sbss"), -2, SHT_NOBITS, SHF_ALLOC + SHF_WRITE }, | |
2572 | { STRING_COMMA_LEN (".sdata"), -2, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE }, | |
2573 | { STRING_COMMA_LEN (".toc"), 0, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE }, | |
2574 | { STRING_COMMA_LEN (".toc1"), 0, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE }, | |
2575 | { STRING_COMMA_LEN (".tocbss"), 0, SHT_NOBITS, SHF_ALLOC + SHF_WRITE }, | |
2576 | { NULL, 0, 0, 0, 0 } | |
5d35169e AM |
2577 | }; |
2578 | ||
7c8fe5c4 AM |
2579 | enum _ppc64_sec_type { |
2580 | sec_normal = 0, | |
2581 | sec_opd = 1, | |
2582 | sec_toc = 2 | |
2583 | }; | |
2584 | ||
f0abc2a1 AM |
2585 | struct _ppc64_elf_section_data |
2586 | { | |
2587 | struct bfd_elf_section_data elf; | |
411e1bfb AM |
2588 | |
2589 | /* An array with one entry for each opd function descriptor. */ | |
f0abc2a1 AM |
2590 | union |
2591 | { | |
411e1bfb | 2592 | /* Points to the function code section for local opd entries. */ |
7c8fe5c4 | 2593 | asection **opd_func_sec; |
411e1bfb | 2594 | /* After editing .opd, adjust references to opd local syms. */ |
7c8fe5c4 AM |
2595 | long *opd_adjust; |
2596 | ||
2597 | /* An array for toc sections, indexed by offset/8. | |
2598 | Specifies the relocation symbol index used at a given toc offset. */ | |
2599 | unsigned *t_symndx; | |
2600 | } u; | |
2601 | ||
2602 | enum _ppc64_sec_type sec_type:2; | |
411e1bfb | 2603 | |
7c8fe5c4 AM |
2604 | /* Flag set when small branches are detected. Used to |
2605 | select suitable defaults for the stub group size. */ | |
2606 | unsigned int has_14bit_branch:1; | |
f0abc2a1 AM |
2607 | }; |
2608 | ||
2609 | #define ppc64_elf_section_data(sec) \ | |
411e1bfb | 2610 | ((struct _ppc64_elf_section_data *) elf_section_data (sec)) |
f0abc2a1 AM |
2611 | |
2612 | static bfd_boolean | |
4ce794b7 | 2613 | ppc64_elf_new_section_hook (bfd *abfd, asection *sec) |
f0abc2a1 | 2614 | { |
f592407e AM |
2615 | if (!sec->used_by_bfd) |
2616 | { | |
2617 | struct _ppc64_elf_section_data *sdata; | |
2618 | bfd_size_type amt = sizeof (*sdata); | |
f0abc2a1 | 2619 | |
f592407e AM |
2620 | sdata = bfd_zalloc (abfd, amt); |
2621 | if (sdata == NULL) | |
2622 | return FALSE; | |
2623 | sec->used_by_bfd = sdata; | |
2624 | } | |
f0abc2a1 AM |
2625 | |
2626 | return _bfd_elf_new_section_hook (abfd, sec); | |
2627 | } | |
4025353c AM |
2628 | |
2629 | static void * | |
2630 | get_opd_info (asection * sec) | |
2631 | { | |
2632 | if (sec != NULL | |
2633 | && ppc64_elf_section_data (sec) != NULL | |
7c8fe5c4 AM |
2634 | && ppc64_elf_section_data (sec)->sec_type == sec_opd) |
2635 | return ppc64_elf_section_data (sec)->u.opd_adjust; | |
4025353c AM |
2636 | return NULL; |
2637 | } | |
90e3cdf2 JJ |
2638 | \f |
2639 | /* Parameters for the qsort hook. */ | |
2640 | static asection *synthetic_opd; | |
2641 | static bfd_boolean synthetic_relocatable; | |
2642 | ||
699733f6 | 2643 | /* qsort comparison function for ppc64_elf_get_synthetic_symtab. */ |
90e3cdf2 JJ |
2644 | |
2645 | static int | |
2646 | compare_symbols (const void *ap, const void *bp) | |
2647 | { | |
2648 | const asymbol *a = * (const asymbol **) ap; | |
2649 | const asymbol *b = * (const asymbol **) bp; | |
2650 | ||
699733f6 AM |
2651 | /* Section symbols first. */ |
2652 | if ((a->flags & BSF_SECTION_SYM) && !(b->flags & BSF_SECTION_SYM)) | |
90e3cdf2 | 2653 | return -1; |
699733f6 | 2654 | if (!(a->flags & BSF_SECTION_SYM) && (b->flags & BSF_SECTION_SYM)) |
90e3cdf2 JJ |
2655 | return 1; |
2656 | ||
699733f6 | 2657 | /* then .opd symbols. */ |
90e3cdf2 JJ |
2658 | if (a->section == synthetic_opd && b->section != synthetic_opd) |
2659 | return -1; | |
2660 | if (a->section != synthetic_opd && b->section == synthetic_opd) | |
2661 | return 1; | |
2662 | ||
699733f6 | 2663 | /* then other code symbols. */ |
90e3cdf2 JJ |
2664 | if ((a->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL)) |
2665 | == (SEC_CODE | SEC_ALLOC) | |
2666 | && (b->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL)) | |
2667 | != (SEC_CODE | SEC_ALLOC)) | |
2668 | return -1; | |
2669 | ||
2670 | if ((a->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL)) | |
2671 | != (SEC_CODE | SEC_ALLOC) | |
2672 | && (b->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL)) | |
2673 | == (SEC_CODE | SEC_ALLOC)) | |
2674 | return 1; | |
2675 | ||
2676 | if (synthetic_relocatable) | |
2677 | { | |
2678 | if (a->section->id < b->section->id) | |
2679 | return -1; | |
2680 | ||
2681 | if (a->section->id > b->section->id) | |
2682 | return 1; | |
2683 | } | |
2684 | ||
2685 | if (a->value + a->section->vma < b->value + b->section->vma) | |
2686 | return -1; | |
2687 | ||
2688 | if (a->value + a->section->vma > b->value + b->section->vma) | |
2689 | return 1; | |
2690 | ||
4d35a0aa AM |
2691 | /* For syms with the same value, prefer strong dynamic global function |
2692 | syms over other syms. */ | |
2693 | if ((a->flags & BSF_GLOBAL) != 0 && (b->flags & BSF_GLOBAL) == 0) | |
2694 | return -1; | |
2695 | ||
2696 | if ((a->flags & BSF_GLOBAL) == 0 && (b->flags & BSF_GLOBAL) != 0) | |
2697 | return 1; | |
2698 | ||
2699 | if ((a->flags & BSF_FUNCTION) != 0 && (b->flags & BSF_FUNCTION) == 0) | |
2700 | return -1; | |
2701 | ||
2702 | if ((a->flags & BSF_FUNCTION) == 0 && (b->flags & BSF_FUNCTION) != 0) | |
2703 | return 1; | |
2704 | ||
2705 | if ((a->flags & BSF_WEAK) == 0 && (b->flags & BSF_WEAK) != 0) | |
2706 | return -1; | |
2707 | ||
2708 | if ((a->flags & BSF_WEAK) != 0 && (b->flags & BSF_WEAK) == 0) | |
2709 | return 1; | |
2710 | ||
2711 | if ((a->flags & BSF_DYNAMIC) != 0 && (b->flags & BSF_DYNAMIC) == 0) | |
2712 | return -1; | |
2713 | ||
2714 | if ((a->flags & BSF_DYNAMIC) == 0 && (b->flags & BSF_DYNAMIC) != 0) | |
2715 | return 1; | |
2716 | ||
90e3cdf2 JJ |
2717 | return 0; |
2718 | } | |
2719 | ||
699733f6 | 2720 | /* Search SYMS for a symbol of the given VALUE. */ |
90e3cdf2 | 2721 | |
699733f6 AM |
2722 | static asymbol * |
2723 | sym_exists_at (asymbol **syms, long lo, long hi, int id, bfd_vma value) | |
90e3cdf2 | 2724 | { |
699733f6 | 2725 | long mid; |
90e3cdf2 | 2726 | |
699733f6 AM |
2727 | if (id == -1) |
2728 | { | |
2729 | while (lo < hi) | |
2730 | { | |
2731 | mid = (lo + hi) >> 1; | |
2732 | if (syms[mid]->value + syms[mid]->section->vma < value) | |
2733 | lo = mid + 1; | |
2734 | else if (syms[mid]->value + syms[mid]->section->vma > value) | |
2735 | hi = mid; | |
2736 | else | |
2737 | return syms[mid]; | |
2738 | } | |
2739 | } | |
2740 | else | |
2741 | { | |
2742 | while (lo < hi) | |
2743 | { | |
2744 | mid = (lo + hi) >> 1; | |
2745 | if (syms[mid]->section->id < id) | |
2746 | lo = mid + 1; | |
2747 | else if (syms[mid]->section->id > id) | |
2748 | hi = mid; | |
2749 | else if (syms[mid]->value < value) | |
2750 | lo = mid + 1; | |
2751 | else if (syms[mid]->value > value) | |
2752 | hi = mid; | |
2753 | else | |
2754 | return syms[mid]; | |
2755 | } | |
2756 | } | |
2757 | return NULL; | |
90e3cdf2 JJ |
2758 | } |
2759 | ||
699733f6 AM |
2760 | /* Create synthetic symbols, effectively restoring "dot-symbol" function |
2761 | entry syms. */ | |
90e3cdf2 JJ |
2762 | |
2763 | static long | |
a7535cf3 AM |
2764 | ppc64_elf_get_synthetic_symtab (bfd *abfd, |
2765 | long static_count, asymbol **static_syms, | |
2766 | long dyn_count, asymbol **dyn_syms, | |
c9727e01 | 2767 | asymbol **ret) |
90e3cdf2 JJ |
2768 | { |
2769 | asymbol *s; | |
699733f6 AM |
2770 | long i; |
2771 | long count; | |
90e3cdf2 | 2772 | char *names; |
a7535cf3 | 2773 | long symcount, codesecsym, codesecsymend, secsymend, opdsymend; |
699733f6 | 2774 | asection *opd; |
90e3cdf2 | 2775 | bfd_boolean relocatable = (abfd->flags & (EXEC_P | DYNAMIC)) == 0; |
a7535cf3 | 2776 | asymbol **syms; |
90e3cdf2 JJ |
2777 | |
2778 | *ret = NULL; | |
2779 | ||
2780 | opd = bfd_get_section_by_name (abfd, ".opd"); | |
2781 | if (opd == NULL) | |
2782 | return 0; | |
2783 | ||
a7535cf3 | 2784 | symcount = static_count; |
c9727e01 | 2785 | if (!relocatable) |
a7535cf3 | 2786 | symcount += dyn_count; |
90e3cdf2 | 2787 | if (symcount == 0) |
c9727e01 | 2788 | return 0; |
90e3cdf2 | 2789 | |
a7535cf3 AM |
2790 | syms = bfd_malloc ((symcount + 1) * sizeof (*syms)); |
2791 | if (syms == NULL) | |
7356fed5 | 2792 | return -1; |
a7535cf3 AM |
2793 | |
2794 | if (!relocatable && static_count != 0 && dyn_count != 0) | |
2795 | { | |
2796 | /* Use both symbol tables. */ | |
2797 | memcpy (syms, static_syms, static_count * sizeof (*syms)); | |
2798 | memcpy (syms + static_count, dyn_syms, (dyn_count + 1) * sizeof (*syms)); | |
2799 | } | |
2800 | else if (!relocatable && static_count == 0) | |
2801 | memcpy (syms, dyn_syms, (symcount + 1) * sizeof (*syms)); | |
2802 | else | |
2803 | memcpy (syms, static_syms, (symcount + 1) * sizeof (*syms)); | |
2804 | ||
90e3cdf2 JJ |
2805 | synthetic_opd = opd; |
2806 | synthetic_relocatable = relocatable; | |
595da8c5 | 2807 | qsort (syms, symcount, sizeof (*syms), compare_symbols); |
90e3cdf2 | 2808 | |
c9727e01 AM |
2809 | if (!relocatable && symcount > 1) |
2810 | { | |
2811 | long j; | |
2812 | /* Trim duplicate syms, since we may have merged the normal and | |
2813 | dynamic symbols. Actually, we only care about syms that have | |
3b36f7e6 | 2814 | different values, so trim any with the same value. */ |
c9727e01 AM |
2815 | for (i = 1, j = 1; i < symcount; ++i) |
2816 | if (syms[i - 1]->value + syms[i - 1]->section->vma | |
2817 | != syms[i]->value + syms[i]->section->vma) | |
2818 | syms[j++] = syms[i]; | |
2819 | symcount = j; | |
2820 | } | |
2821 | ||
699733f6 AM |
2822 | i = 0; |
2823 | if (syms[i]->section == opd) | |
2824 | ++i; | |
2825 | codesecsym = i; | |
90e3cdf2 | 2826 | |
699733f6 AM |
2827 | for (; i < symcount; ++i) |
2828 | if (((syms[i]->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL)) | |
2829 | != (SEC_CODE | SEC_ALLOC)) | |
2830 | || (syms[i]->flags & BSF_SECTION_SYM) == 0) | |
2831 | break; | |
2832 | codesecsymend = i; | |
90e3cdf2 | 2833 | |
699733f6 AM |
2834 | for (; i < symcount; ++i) |
2835 | if ((syms[i]->flags & BSF_SECTION_SYM) == 0) | |
2836 | break; | |
2837 | secsymend = i; | |
90e3cdf2 | 2838 | |
699733f6 AM |
2839 | for (; i < symcount; ++i) |
2840 | if (syms[i]->section != opd) | |
2841 | break; | |
2842 | opdsymend = i; | |
90e3cdf2 | 2843 | |
699733f6 AM |
2844 | for (; i < symcount; ++i) |
2845 | if ((syms[i]->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL)) | |
2846 | != (SEC_CODE | SEC_ALLOC)) | |
2847 | break; | |
2848 | symcount = i; | |
2849 | ||
c9727e01 | 2850 | count = 0; |
699733f6 | 2851 | if (opdsymend == secsymend) |
c9727e01 | 2852 | goto done; |
90e3cdf2 | 2853 | |
699733f6 | 2854 | if (relocatable) |
90e3cdf2 | 2855 | { |
699733f6 AM |
2856 | bfd_boolean (*slurp_relocs) (bfd *, asection *, asymbol **, bfd_boolean); |
2857 | arelent *r; | |
2858 | size_t size; | |
2859 | long relcount; | |
90e3cdf2 | 2860 | |
699733f6 | 2861 | slurp_relocs = get_elf_backend_data (abfd)->s->slurp_reloc_table; |
90e3cdf2 | 2862 | relcount = (opd->flags & SEC_RELOC) ? opd->reloc_count : 0; |
7356fed5 | 2863 | if (relcount == 0) |
c9727e01 | 2864 | goto done; |
90e3cdf2 | 2865 | |
7356fed5 AM |
2866 | if (!(*slurp_relocs) (abfd, opd, static_syms, FALSE)) |
2867 | { | |
2868 | count = -1; | |
2869 | goto done; | |
2870 | } | |
2871 | ||
699733f6 | 2872 | size = 0; |
595da8c5 | 2873 | for (i = secsymend, r = opd->relocation; i < opdsymend; ++i) |
699733f6 AM |
2874 | { |
2875 | asymbol *sym; | |
90e3cdf2 | 2876 | |
595da8c5 | 2877 | while (r < opd->relocation + relcount |
699733f6 AM |
2878 | && r->address < syms[i]->value + opd->vma) |
2879 | ++r; | |
90e3cdf2 | 2880 | |
595da8c5 | 2881 | if (r == opd->relocation + relcount) |
699733f6 | 2882 | break; |
90e3cdf2 | 2883 | |
699733f6 AM |
2884 | if (r->address != syms[i]->value + opd->vma) |
2885 | continue; | |
90e3cdf2 | 2886 | |
699733f6 AM |
2887 | if (r->howto->type != R_PPC64_ADDR64) |
2888 | continue; | |
90e3cdf2 | 2889 | |
699733f6 AM |
2890 | sym = *r->sym_ptr_ptr; |
2891 | if (!sym_exists_at (syms, opdsymend, symcount, | |
2892 | sym->section->id, sym->value + r->addend)) | |
2893 | { | |
2894 | ++count; | |
2895 | size += sizeof (asymbol); | |
2896 | size += strlen (syms[i]->name) + 2; | |
2897 | } | |
2898 | } | |
90e3cdf2 | 2899 | |
699733f6 AM |
2900 | s = *ret = bfd_malloc (size); |
2901 | if (s == NULL) | |
2902 | { | |
7356fed5 | 2903 | count = -1; |
c9727e01 | 2904 | goto done; |
699733f6 | 2905 | } |
90e3cdf2 | 2906 | |
699733f6 | 2907 | names = (char *) (s + count); |
90e3cdf2 | 2908 | |
595da8c5 | 2909 | for (i = secsymend, r = opd->relocation; i < opdsymend; ++i) |
90e3cdf2 | 2910 | { |
699733f6 | 2911 | asymbol *sym; |
90e3cdf2 | 2912 | |
595da8c5 | 2913 | while (r < opd->relocation + relcount |
699733f6 AM |
2914 | && r->address < syms[i]->value + opd->vma) |
2915 | ++r; | |
90e3cdf2 | 2916 | |
595da8c5 | 2917 | if (r == opd->relocation + relcount) |
699733f6 AM |
2918 | break; |
2919 | ||
2920 | if (r->address != syms[i]->value + opd->vma) | |
2921 | continue; | |
2922 | ||
2923 | if (r->howto->type != R_PPC64_ADDR64) | |
2924 | continue; | |
90e3cdf2 | 2925 | |
699733f6 AM |
2926 | sym = *r->sym_ptr_ptr; |
2927 | if (!sym_exists_at (syms, opdsymend, symcount, | |
2928 | sym->section->id, sym->value + r->addend)) | |
2929 | { | |
2930 | size_t len; | |
2931 | ||
2932 | *s = *syms[i]; | |
2933 | s->section = sym->section; | |
2934 | s->value = sym->value + r->addend; | |
2935 | s->name = names; | |
2936 | *names++ = '.'; | |
2937 | len = strlen (syms[i]->name); | |
2938 | memcpy (names, syms[i]->name, len + 1); | |
2939 | names += len + 1; | |
2940 | s++; | |
2941 | } | |
2942 | } | |
2943 | } | |
2944 | else | |
90e3cdf2 | 2945 | { |
699733f6 AM |
2946 | bfd_byte *contents; |
2947 | size_t size; | |
90e3cdf2 | 2948 | |
699733f6 AM |
2949 | if (!bfd_malloc_and_get_section (abfd, opd, &contents)) |
2950 | { | |
2951 | if (contents) | |
c9727e01 AM |
2952 | { |
2953 | free_contents_and_exit: | |
2954 | free (contents); | |
2955 | } | |
7356fed5 | 2956 | count = -1; |
c9727e01 | 2957 | goto done; |
699733f6 | 2958 | } |
90e3cdf2 | 2959 | |
699733f6 AM |
2960 | size = 0; |
2961 | for (i = secsymend; i < opdsymend; ++i) | |
2962 | { | |
2963 | bfd_vma ent; | |
90e3cdf2 | 2964 | |
699733f6 AM |
2965 | ent = bfd_get_64 (abfd, contents + syms[i]->value); |
2966 | if (!sym_exists_at (syms, opdsymend, symcount, -1, ent)) | |
2967 | { | |
2968 | ++count; | |
2969 | size += sizeof (asymbol); | |
2970 | size += strlen (syms[i]->name) + 2; | |
2971 | } | |
2972 | } | |
90e3cdf2 | 2973 | |
699733f6 AM |
2974 | s = *ret = bfd_malloc (size); |
2975 | if (s == NULL) | |
7356fed5 | 2976 | goto free_contents_and_exit; |
90e3cdf2 | 2977 | |
699733f6 | 2978 | names = (char *) (s + count); |
90e3cdf2 | 2979 | |
699733f6 | 2980 | for (i = secsymend; i < opdsymend; ++i) |
90e3cdf2 | 2981 | { |
699733f6 | 2982 | bfd_vma ent; |
90e3cdf2 | 2983 | |
699733f6 AM |
2984 | ent = bfd_get_64 (abfd, contents + syms[i]->value); |
2985 | if (!sym_exists_at (syms, opdsymend, symcount, -1, ent)) | |
90e3cdf2 | 2986 | { |
c9727e01 | 2987 | long lo, hi; |
699733f6 | 2988 | size_t len; |
c9727e01 | 2989 | asection *sec = abfd->sections; |
90e3cdf2 | 2990 | |
699733f6 AM |
2991 | *s = *syms[i]; |
2992 | lo = codesecsym; | |
2993 | hi = codesecsymend; | |
2994 | while (lo < hi) | |
2995 | { | |
c9727e01 | 2996 | long mid = (lo + hi) >> 1; |
699733f6 AM |
2997 | if (syms[mid]->section->vma < ent) |
2998 | lo = mid + 1; | |
2999 | else if (syms[mid]->section->vma > ent) | |
3000 | hi = mid; | |
3001 | else | |
c9727e01 AM |
3002 | { |
3003 | sec = syms[mid]->section; | |
3004 | break; | |
3005 | } | |
699733f6 AM |
3006 | } |
3007 | ||
c9727e01 | 3008 | if (lo >= hi && lo > codesecsym) |
699733f6 | 3009 | sec = syms[lo - 1]->section; |
699733f6 AM |
3010 | |
3011 | for (; sec != NULL; sec = sec->next) | |
3012 | { | |
3013 | if (sec->vma > ent) | |
3014 | break; | |
3015 | if ((sec->flags & SEC_ALLOC) == 0 | |
3016 | || (sec->flags & SEC_LOAD) == 0) | |
3017 | break; | |
3018 | if ((sec->flags & SEC_CODE) != 0) | |
3019 | s->section = sec; | |
3020 | } | |
3021 | s->value = ent - s->section->vma; | |
3022 | s->name = names; | |
3023 | *names++ = '.'; | |
3024 | len = strlen (syms[i]->name); | |
3025 | memcpy (names, syms[i]->name, len + 1); | |
3026 | names += len + 1; | |
3027 | s++; | |
90e3cdf2 | 3028 | } |
90e3cdf2 | 3029 | } |
699733f6 | 3030 | free (contents); |
90e3cdf2 JJ |
3031 | } |
3032 | ||
c9727e01 | 3033 | done: |
a7535cf3 | 3034 | free (syms); |
90e3cdf2 JJ |
3035 | return count; |
3036 | } | |
5bd4f169 | 3037 | \f |
65f38f15 AM |
3038 | /* The following functions are specific to the ELF linker, while |
3039 | functions above are used generally. Those named ppc64_elf_* are | |
3040 | called by the main ELF linker code. They appear in this file more | |
3041 | or less in the order in which they are called. eg. | |
3042 | ppc64_elf_check_relocs is called early in the link process, | |
3043 | ppc64_elf_finish_dynamic_sections is one of the last functions | |
e86ce104 AM |
3044 | called. |
3045 | ||
3046 | PowerPC64-ELF uses a similar scheme to PowerPC64-XCOFF in that | |
3047 | functions have both a function code symbol and a function descriptor | |
3048 | symbol. A call to foo in a relocatable object file looks like: | |
3049 | ||
3050 | . .text | |
3051 | . x: | |
3052 | . bl .foo | |
3053 | . nop | |
3054 | ||
3055 | The function definition in another object file might be: | |
3056 | ||
3057 | . .section .opd | |
3058 | . foo: .quad .foo | |
3059 | . .quad .TOC.@tocbase | |
3060 | . .quad 0 | |
3061 | . | |
3062 | . .text | |
3063 | . .foo: blr | |
3064 | ||
3065 | When the linker resolves the call during a static link, the branch | |
3066 | unsurprisingly just goes to .foo and the .opd information is unused. | |
3067 | If the function definition is in a shared library, things are a little | |
3068 | different: The call goes via a plt call stub, the opd information gets | |
3069 | copied to the plt, and the linker patches the nop. | |
3070 | ||
3071 | . x: | |
3072 | . bl .foo_stub | |
3073 | . ld 2,40(1) | |
3074 | . | |
3075 | . | |
3076 | . .foo_stub: | |
3077 | . addis 12,2,Lfoo@toc@ha # in practice, the call stub | |
411e1bfb | 3078 | . addi 12,12,Lfoo@toc@l # is slightly optimized, but |
e86ce104 AM |
3079 | . std 2,40(1) # this is the general idea |
3080 | . ld 11,0(12) | |
3081 | . ld 2,8(12) | |
3082 | . mtctr 11 | |
3083 | . ld 11,16(12) | |
3084 | . bctr | |
3085 | . | |
3086 | . .section .plt | |
3087 | . Lfoo: reloc (R_PPC64_JMP_SLOT, foo) | |
3088 | ||
3089 | The "reloc ()" notation is supposed to indicate that the linker emits | |
3090 | an R_PPC64_JMP_SLOT reloc against foo. The dynamic linker does the opd | |
3091 | copying. | |
3092 | ||
3093 | What are the difficulties here? Well, firstly, the relocations | |
3094 | examined by the linker in check_relocs are against the function code | |
3095 | sym .foo, while the dynamic relocation in the plt is emitted against | |
3096 | the function descriptor symbol, foo. Somewhere along the line, we need | |
3097 | to carefully copy dynamic link information from one symbol to the other. | |
3098 | Secondly, the generic part of the elf linker will make .foo a dynamic | |
3099 | symbol as is normal for most other backends. We need foo dynamic | |
3100 | instead, at least for an application final link. However, when | |
3101 | creating a shared library containing foo, we need to have both symbols | |
3102 | dynamic so that references to .foo are satisfied during the early | |
3103 | stages of linking. Otherwise the linker might decide to pull in a | |
8387904d AM |
3104 | definition from some other object, eg. a static library. |
3105 | ||
3106 | Update: As of August 2004, we support a new convention. Function | |
3107 | calls may use the function descriptor symbol, ie. "bl foo". This | |
3108 | behaves exactly as "bl .foo". */ | |
65f38f15 AM |
3109 | |
3110 | /* The linker needs to keep track of the number of relocs that it | |
3111 | decides to copy as dynamic relocs in check_relocs for each symbol. | |
3112 | This is so that it can later discard them if they are found to be | |
3113 | unnecessary. We store the information in a field extending the | |
3114 | regular ELF linker hash table. */ | |
3115 | ||
3116 | struct ppc_dyn_relocs | |
3117 | { | |
3118 | struct ppc_dyn_relocs *next; | |
3119 | ||
3120 | /* The input section of the reloc. */ | |
3121 | asection *sec; | |
3122 | ||
3123 | /* Total number of relocs copied for the input section. */ | |
3124 | bfd_size_type count; | |
3125 | ||
3126 | /* Number of pc-relative relocs copied for the input section. */ | |
3127 | bfd_size_type pc_count; | |
3128 | }; | |
3129 | ||
411e1bfb AM |
3130 | /* Track GOT entries needed for a given symbol. We might need more |
3131 | than one got entry per symbol. */ | |
3132 | struct got_entry | |
3133 | { | |
3134 | struct got_entry *next; | |
3135 | ||
e7b938ca | 3136 | /* The symbol addend that we'll be placing in the GOT. */ |
411e1bfb AM |
3137 | bfd_vma addend; |
3138 | ||
e717da7e AM |
3139 | /* Unlike other ELF targets, we use separate GOT entries for the same |
3140 | symbol referenced from different input files. This is to support | |
3141 | automatic multiple TOC/GOT sections, where the TOC base can vary | |
3142 | from one input file to another. | |
3143 | ||
3144 | Point to the BFD owning this GOT entry. */ | |
3145 | bfd *owner; | |
3146 | ||
3147 | /* Zero for non-tls entries, or TLS_TLS and one of TLS_GD, TLS_LD, | |
3148 | TLS_TPREL or TLS_DTPREL for tls entries. */ | |
3149 | char tls_type; | |
3150 | ||
e7b938ca | 3151 | /* Reference count until size_dynamic_sections, GOT offset thereafter. */ |
411e1bfb AM |
3152 | union |
3153 | { | |
3154 | bfd_signed_vma refcount; | |
3155 | bfd_vma offset; | |
3156 | } got; | |
411e1bfb AM |
3157 | }; |
3158 | ||
3159 | /* The same for PLT. */ | |
3160 | struct plt_entry | |
3161 | { | |
3162 | struct plt_entry *next; | |
3163 | ||
3164 | bfd_vma addend; | |
3165 | ||
3166 | union | |
3167 | { | |
3168 | bfd_signed_vma refcount; | |
3169 | bfd_vma offset; | |
3170 | } plt; | |
3171 | }; | |
3172 | ||
65f38f15 | 3173 | /* Of those relocs that might be copied as dynamic relocs, this macro |
58ac9f71 AM |
3174 | selects those that must be copied when linking a shared library, |
3175 | even when the symbol is local. */ | |
65f38f15 | 3176 | |
411e1bfb | 3177 | #define MUST_BE_DYN_RELOC(RTYPE) \ |
805fc799 AM |
3178 | ((RTYPE) != R_PPC64_REL32 \ |
3179 | && (RTYPE) != R_PPC64_REL64 \ | |
04c9666a | 3180 | && (RTYPE) != R_PPC64_REL30) |
65f38f15 | 3181 | |
f4656909 AM |
3182 | /* If ELIMINATE_COPY_RELOCS is non-zero, the linker will try to avoid |
3183 | copying dynamic variables from a shared lib into an app's dynbss | |
3184 | section, and instead use a dynamic relocation to point into the | |
5d35169e AM |
3185 | shared lib. With code that gcc generates, it's vital that this be |
3186 | enabled; In the PowerPC64 ABI, the address of a function is actually | |
3187 | the address of a function descriptor, which resides in the .opd | |
3188 | section. gcc uses the descriptor directly rather than going via the | |
3189 | GOT as some other ABI's do, which means that initialized function | |
3190 | pointers must reference the descriptor. Thus, a function pointer | |
3191 | initialized to the address of a function in a shared library will | |
3192 | either require a copy reloc, or a dynamic reloc. Using a copy reloc | |
4cc11e76 | 3193 | redefines the function descriptor symbol to point to the copy. This |
5d35169e AM |
3194 | presents a problem as a plt entry for that function is also |
3195 | initialized from the function descriptor symbol and the copy reloc | |
3196 | may not be initialized first. */ | |
a23b6845 | 3197 | #define ELIMINATE_COPY_RELOCS 1 |
f4656909 | 3198 | |
721956f4 AM |
3199 | /* Section name for stubs is the associated section name plus this |
3200 | string. */ | |
3201 | #define STUB_SUFFIX ".stub" | |
3202 | ||
3203 | /* Linker stubs. | |
3204 | ppc_stub_long_branch: | |
3205 | Used when a 14 bit branch (or even a 24 bit branch) can't reach its | |
3206 | destination, but a 24 bit branch in a stub section will reach. | |
3207 | . b dest | |
3208 | ||
3209 | ppc_stub_plt_branch: | |
3210 | Similar to the above, but a 24 bit branch in the stub section won't | |
3211 | reach its destination. | |
87e226ce AM |
3212 | . addis %r12,%r2,xxx@toc@ha |
3213 | . ld %r11,xxx@toc@l(%r12) | |
721956f4 AM |
3214 | . mtctr %r11 |
3215 | . bctr | |
3216 | ||
3217 | ppc_stub_plt_call: | |
2c66dc6c AM |
3218 | Used to call a function in a shared library. If it so happens that |
3219 | the plt entry referenced crosses a 64k boundary, then an extra | |
3220 | "addis %r12,%r12,1" will be inserted before the load at xxx+8 or | |
3221 | xxx+16 as appropriate. | |
87e226ce | 3222 | . addis %r12,%r2,xxx@toc@ha |
721956f4 | 3223 | . std %r2,40(%r1) |
87e226ce AM |
3224 | . ld %r11,xxx+0@toc@l(%r12) |
3225 | . ld %r2,xxx+8@toc@l(%r12) | |
721956f4 | 3226 | . mtctr %r11 |
87e226ce | 3227 | . ld %r11,xxx+16@toc@l(%r12) |
721956f4 | 3228 | . bctr |
ad8e1ba5 AM |
3229 | |
3230 | ppc_stub_long_branch and ppc_stub_plt_branch may also have additional | |
3231 | code to adjust the value and save r2 to support multiple toc sections. | |
3232 | A ppc_stub_long_branch with an r2 offset looks like: | |
3233 | . std %r2,40(%r1) | |
3234 | . addis %r2,%r2,off@ha | |
3235 | . addi %r2,%r2,off@l | |
3236 | . b dest | |
3237 | ||
3238 | A ppc_stub_plt_branch with an r2 offset looks like: | |
3239 | . std %r2,40(%r1) | |
3240 | . addis %r12,%r2,xxx@toc@ha | |
3241 | . ld %r11,xxx@toc@l(%r12) | |
3242 | . addis %r2,%r2,off@ha | |
3243 | . addi %r2,%r2,off@l | |
3244 | . mtctr %r11 | |
3245 | . bctr | |
721956f4 AM |
3246 | */ |
3247 | ||
3248 | enum ppc_stub_type { | |
3249 | ppc_stub_none, | |
3250 | ppc_stub_long_branch, | |
ad8e1ba5 | 3251 | ppc_stub_long_branch_r2off, |
721956f4 | 3252 | ppc_stub_plt_branch, |
ad8e1ba5 | 3253 | ppc_stub_plt_branch_r2off, |
721956f4 AM |
3254 | ppc_stub_plt_call |
3255 | }; | |
3256 | ||
3257 | struct ppc_stub_hash_entry { | |
3258 | ||
3259 | /* Base hash table entry structure. */ | |
3260 | struct bfd_hash_entry root; | |
3261 | ||
ad8e1ba5 AM |
3262 | enum ppc_stub_type stub_type; |
3263 | ||
721956f4 AM |
3264 | /* The stub section. */ |
3265 | asection *stub_sec; | |
3266 | ||
3267 | /* Offset within stub_sec of the beginning of this stub. */ | |
3268 | bfd_vma stub_offset; | |
3269 | ||
3270 | /* Given the symbol's value and its section we can determine its final | |
3271 | value when building the stubs (so the stub knows where to jump. */ | |
3272 | bfd_vma target_value; | |
3273 | asection *target_section; | |
3274 | ||
721956f4 AM |
3275 | /* The symbol table entry, if any, that this was derived from. */ |
3276 | struct ppc_link_hash_entry *h; | |
3277 | ||
411e1bfb AM |
3278 | /* And the reloc addend that this was derived from. */ |
3279 | bfd_vma addend; | |
3280 | ||
721956f4 AM |
3281 | /* Where this stub is being called from, or, in the case of combined |
3282 | stub sections, the first input section in the group. */ | |
3283 | asection *id_sec; | |
3284 | }; | |
3285 | ||
3286 | struct ppc_branch_hash_entry { | |
3287 | ||
3288 | /* Base hash table entry structure. */ | |
3289 | struct bfd_hash_entry root; | |
3290 | ||
c456f082 | 3291 | /* Offset within branch lookup table. */ |
721956f4 AM |
3292 | unsigned int offset; |
3293 | ||
3294 | /* Generation marker. */ | |
3295 | unsigned int iter; | |
3296 | }; | |
65f38f15 AM |
3297 | |
3298 | struct ppc_link_hash_entry | |
3299 | { | |
3300 | struct elf_link_hash_entry elf; | |
3301 | ||
b3fac117 AM |
3302 | union { |
3303 | /* A pointer to the most recently used stub hash entry against this | |
3304 | symbol. */ | |
3305 | struct ppc_stub_hash_entry *stub_cache; | |
3306 | ||
3307 | /* A pointer to the next symbol starting with a '.' */ | |
3308 | struct ppc_link_hash_entry *next_dot_sym; | |
3309 | } u; | |
721956f4 | 3310 | |
65f38f15 AM |
3311 | /* Track dynamic relocs copied for this symbol. */ |
3312 | struct ppc_dyn_relocs *dyn_relocs; | |
e86ce104 | 3313 | |
721956f4 | 3314 | /* Link between function code and descriptor symbols. */ |
34814b9f | 3315 | struct ppc_link_hash_entry *oh; |
721956f4 | 3316 | |
e86ce104 AM |
3317 | /* Flag function code and descriptor symbols. */ |
3318 | unsigned int is_func:1; | |
3319 | unsigned int is_func_descriptor:1; | |
908b32fc | 3320 | unsigned int fake:1; |
411e1bfb | 3321 | |
c5614fa4 AM |
3322 | /* Whether global opd/toc sym has been adjusted or not. |
3323 | After ppc64_elf_edit_opd/ppc64_elf_edit_toc has run, this flag | |
3324 | should be set for all globals defined in any opd/toc section. */ | |
754021d0 AM |
3325 | unsigned int adjust_done:1; |
3326 | ||
99877b66 AM |
3327 | /* Set if we twiddled this symbol to weak at some stage. */ |
3328 | unsigned int was_undefined:1; | |
3329 | ||
411e1bfb | 3330 | /* Contexts in which symbol is used in the GOT (or TOC). |
e7b938ca AM |
3331 | TLS_GD .. TLS_EXPLICIT bits are or'd into the mask as the |
3332 | corresponding relocs are encountered during check_relocs. | |
3333 | tls_optimize clears TLS_GD .. TLS_TPREL when optimizing to | |
3334 | indicate the corresponding GOT entry type is not needed. | |
3335 | tls_optimize may also set TLS_TPRELGD when a GD reloc turns into | |
3336 | a TPREL one. We use a separate flag rather than setting TPREL | |
3337 | just for convenience in distinguishing the two cases. */ | |
3338 | #define TLS_GD 1 /* GD reloc. */ | |
3339 | #define TLS_LD 2 /* LD reloc. */ | |
3340 | #define TLS_TPREL 4 /* TPREL reloc, => IE. */ | |
3341 | #define TLS_DTPREL 8 /* DTPREL reloc, => LD. */ | |
3342 | #define TLS_TLS 16 /* Any TLS reloc. */ | |
3343 | #define TLS_EXPLICIT 32 /* Marks TOC section TLS relocs. */ | |
3344 | #define TLS_TPRELGD 64 /* TPREL reloc resulting from GD->IE. */ | |
3345 | char tls_mask; | |
65f38f15 AM |
3346 | }; |
3347 | ||
3348 | /* ppc64 ELF linker hash table. */ | |
3349 | ||
3350 | struct ppc_link_hash_table | |
3351 | { | |
3352 | struct elf_link_hash_table elf; | |
3353 | ||
721956f4 AM |
3354 | /* The stub hash table. */ |
3355 | struct bfd_hash_table stub_hash_table; | |
3356 | ||
3357 | /* Another hash table for plt_branch stubs. */ | |
3358 | struct bfd_hash_table branch_hash_table; | |
3359 | ||
3360 | /* Linker stub bfd. */ | |
3361 | bfd *stub_bfd; | |
3362 | ||
3363 | /* Linker call-backs. */ | |
4ce794b7 AM |
3364 | asection * (*add_stub_section) (const char *, asection *); |
3365 | void (*layout_sections_again) (void); | |
721956f4 AM |
3366 | |
3367 | /* Array to keep track of which stub sections have been created, and | |
3368 | information on stub grouping. */ | |
3369 | struct map_stub { | |
3370 | /* This is the section to which stubs in the group will be attached. */ | |
3371 | asection *link_sec; | |
3372 | /* The stub section. */ | |
3373 | asection *stub_sec; | |
ad8e1ba5 AM |
3374 | /* Along with elf_gp, specifies the TOC pointer used in this group. */ |
3375 | bfd_vma toc_off; | |
721956f4 AM |
3376 | } *stub_group; |
3377 | ||
ad8e1ba5 AM |
3378 | /* Temp used when calculating TOC pointers. */ |
3379 | bfd_vma toc_curr; | |
3380 | ||
8f3bab57 AM |
3381 | /* Highest input section id. */ |
3382 | int top_id; | |
3383 | ||
734b6cf9 AM |
3384 | /* Highest output section index. */ |
3385 | int top_index; | |
3386 | ||
b3fac117 AM |
3387 | /* Used when adding symbols. */ |
3388 | struct ppc_link_hash_entry *dot_syms; | |
3389 | ||
734b6cf9 AM |
3390 | /* List of input sections for each output section. */ |
3391 | asection **input_list; | |
721956f4 | 3392 | |
65f38f15 | 3393 | /* Short-cuts to get to dynamic linker sections. */ |
4ce794b7 | 3394 | asection *got; |
4ce794b7 AM |
3395 | asection *plt; |
3396 | asection *relplt; | |
3397 | asection *dynbss; | |
3398 | asection *relbss; | |
3399 | asection *glink; | |
82bd7b59 | 3400 | asection *sfpr; |
4ce794b7 AM |
3401 | asection *brlt; |
3402 | asection *relbrlt; | |
ec338859 | 3403 | |
8387904d AM |
3404 | /* Shortcut to .__tls_get_addr and __tls_get_addr. */ |
3405 | struct ppc_link_hash_entry *tls_get_addr; | |
3406 | struct ppc_link_hash_entry *tls_get_addr_fd; | |
411e1bfb | 3407 | |
9b5ecbd0 AM |
3408 | /* Statistics. */ |
3409 | unsigned long stub_count[ppc_stub_plt_call]; | |
3410 | ||
ee75fd95 AM |
3411 | /* Number of stubs against global syms. */ |
3412 | unsigned long stub_globals; | |
3413 | ||
ad8e1ba5 | 3414 | /* Set if we should emit symbols for stubs. */ |
99877b66 | 3415 | unsigned int emit_stub_syms:1; |
ad8e1ba5 | 3416 | |
4c52953f AM |
3417 | /* Support for multiple toc sections. */ |
3418 | unsigned int no_multi_toc:1; | |
3419 | unsigned int multi_toc_needed:1; | |
3420 | ||
5d1634d7 | 3421 | /* Set on error. */ |
99877b66 | 3422 | unsigned int stub_error:1; |
721956f4 | 3423 | |
99877b66 AM |
3424 | /* Temp used by ppc64_elf_check_directives. */ |
3425 | unsigned int twiddled_syms:1; | |
721956f4 AM |
3426 | |
3427 | /* Incremented every time we size stubs. */ | |
3428 | unsigned int stub_iteration; | |
5d1634d7 | 3429 | |
ec338859 AM |
3430 | /* Small local sym to section mapping cache. */ |
3431 | struct sym_sec_cache sym_sec; | |
65f38f15 AM |
3432 | }; |
3433 | ||
4c52953f AM |
3434 | /* Rename some of the generic section flags to better document how they |
3435 | are used here. */ | |
3436 | #define has_toc_reloc has_gp_reloc | |
3437 | #define makes_toc_func_call need_finalize_relax | |
3438 | #define call_check_in_progress reloc_done | |
3439 | ||
65f38f15 AM |
3440 | /* Get the ppc64 ELF linker hash table from a link_info structure. */ |
3441 | ||
3442 | #define ppc_hash_table(p) \ | |
3443 | ((struct ppc_link_hash_table *) ((p)->hash)) | |
3444 | ||
721956f4 AM |
3445 | #define ppc_stub_hash_lookup(table, string, create, copy) \ |
3446 | ((struct ppc_stub_hash_entry *) \ | |
3447 | bfd_hash_lookup ((table), (string), (create), (copy))) | |
3448 | ||
3449 | #define ppc_branch_hash_lookup(table, string, create, copy) \ | |
3450 | ((struct ppc_branch_hash_entry *) \ | |
3451 | bfd_hash_lookup ((table), (string), (create), (copy))) | |
3452 | ||
3453 | /* Create an entry in the stub hash table. */ | |
3454 | ||
3455 | static struct bfd_hash_entry * | |
4ce794b7 AM |
3456 | stub_hash_newfunc (struct bfd_hash_entry *entry, |
3457 | struct bfd_hash_table *table, | |
3458 | const char *string) | |
721956f4 AM |
3459 | { |
3460 | /* Allocate the structure if it has not already been allocated by a | |
3461 | subclass. */ | |
3462 | if (entry == NULL) | |
3463 | { | |
3464 | entry = bfd_hash_allocate (table, sizeof (struct ppc_stub_hash_entry)); | |
3465 | if (entry == NULL) | |
3466 | return entry; | |
3467 | } | |
3468 | ||
3469 | /* Call the allocation method of the superclass. */ | |
3470 | entry = bfd_hash_newfunc (entry, table, string); | |
3471 | if (entry != NULL) | |
3472 | { | |
3473 | struct ppc_stub_hash_entry *eh; | |
3474 | ||
3475 | /* Initialize the local fields. */ | |
3476 | eh = (struct ppc_stub_hash_entry *) entry; | |
ad8e1ba5 | 3477 | eh->stub_type = ppc_stub_none; |
721956f4 AM |
3478 | eh->stub_sec = NULL; |
3479 | eh->stub_offset = 0; | |
3480 | eh->target_value = 0; | |
3481 | eh->target_section = NULL; | |
721956f4 AM |
3482 | eh->h = NULL; |
3483 | eh->id_sec = NULL; | |
3484 | } | |
3485 | ||
3486 | return entry; | |
3487 | } | |
3488 | ||
3489 | /* Create an entry in the branch hash table. */ | |
3490 | ||
3491 | static struct bfd_hash_entry * | |
4ce794b7 AM |
3492 | branch_hash_newfunc (struct bfd_hash_entry *entry, |
3493 | struct bfd_hash_table *table, | |
3494 | const char *string) | |
721956f4 AM |
3495 | { |
3496 | /* Allocate the structure if it has not already been allocated by a | |
3497 | subclass. */ | |
3498 | if (entry == NULL) | |
3499 | { | |
3500 | entry = bfd_hash_allocate (table, sizeof (struct ppc_branch_hash_entry)); | |
3501 | if (entry == NULL) | |
3502 | return entry; | |
3503 | } | |
3504 | ||
3505 | /* Call the allocation method of the superclass. */ | |
3506 | entry = bfd_hash_newfunc (entry, table, string); | |
3507 | if (entry != NULL) | |
3508 | { | |
3509 | struct ppc_branch_hash_entry *eh; | |
3510 | ||
3511 | /* Initialize the local fields. */ | |
3512 | eh = (struct ppc_branch_hash_entry *) entry; | |
3513 | eh->offset = 0; | |
3514 | eh->iter = 0; | |
3515 | } | |
3516 | ||
3517 | return entry; | |
3518 | } | |
3519 | ||
65f38f15 AM |
3520 | /* Create an entry in a ppc64 ELF linker hash table. */ |
3521 | ||
3522 | static struct bfd_hash_entry * | |
4ce794b7 AM |
3523 | link_hash_newfunc (struct bfd_hash_entry *entry, |
3524 | struct bfd_hash_table *table, | |
3525 | const char *string) | |
65f38f15 AM |
3526 | { |
3527 | /* Allocate the structure if it has not already been allocated by a | |
3528 | subclass. */ | |
3529 | if (entry == NULL) | |
3530 | { | |
3531 | entry = bfd_hash_allocate (table, sizeof (struct ppc_link_hash_entry)); | |
3532 | if (entry == NULL) | |
3533 | return entry; | |
3534 | } | |
3535 | ||
3536 | /* Call the allocation method of the superclass. */ | |
3537 | entry = _bfd_elf_link_hash_newfunc (entry, table, string); | |
3538 | if (entry != NULL) | |
3539 | { | |
3540 | struct ppc_link_hash_entry *eh = (struct ppc_link_hash_entry *) entry; | |
3541 | ||
b3fac117 | 3542 | memset (&eh->u.stub_cache, 0, |
908b32fc | 3543 | (sizeof (struct ppc_link_hash_entry) |
b3fac117 AM |
3544 | - offsetof (struct ppc_link_hash_entry, u.stub_cache))); |
3545 | ||
3546 | /* When making function calls, old ABI code references function entry | |
3547 | points (dot symbols), while new ABI code references the function | |
3548 | descriptor symbol. We need to make any combination of reference and | |
3549 | definition work together, without breaking archive linking. | |
3550 | ||
3551 | For a defined function "foo" and an undefined call to "bar": | |
3552 | An old object defines "foo" and ".foo", references ".bar" (possibly | |
3553 | "bar" too). | |
3554 | A new object defines "foo" and references "bar". | |
3555 | ||
3556 | A new object thus has no problem with its undefined symbols being | |
3557 | satisfied by definitions in an old object. On the other hand, the | |
3558 | old object won't have ".bar" satisfied by a new object. | |
3559 | ||
3560 | Keep a list of newly added dot-symbols. */ | |
3561 | ||
3562 | if (string[0] == '.') | |
3563 | { | |
3564 | struct ppc_link_hash_table *htab; | |
3565 | ||
3566 | htab = (struct ppc_link_hash_table *) table; | |
3567 | eh->u.next_dot_sym = htab->dot_syms; | |
3568 | htab->dot_syms = eh; | |
3569 | } | |
65f38f15 AM |
3570 | } |
3571 | ||
3572 | return entry; | |
3573 | } | |
3574 | ||
3575 | /* Create a ppc64 ELF linker hash table. */ | |
3576 | ||
3577 | static struct bfd_link_hash_table * | |
4ce794b7 | 3578 | ppc64_elf_link_hash_table_create (bfd *abfd) |
65f38f15 AM |
3579 | { |
3580 | struct ppc_link_hash_table *htab; | |
3581 | bfd_size_type amt = sizeof (struct ppc_link_hash_table); | |
3582 | ||
4ce794b7 | 3583 | htab = bfd_zmalloc (amt); |
65f38f15 AM |
3584 | if (htab == NULL) |
3585 | return NULL; | |
3586 | ||
66eb6687 AM |
3587 | if (!_bfd_elf_link_hash_table_init (&htab->elf, abfd, link_hash_newfunc, |
3588 | sizeof (struct ppc_link_hash_entry))) | |
65f38f15 | 3589 | { |
e2d34d7d | 3590 | free (htab); |
65f38f15 AM |
3591 | return NULL; |
3592 | } | |
3593 | ||
721956f4 | 3594 | /* Init the stub hash table too. */ |
66eb6687 AM |
3595 | if (!bfd_hash_table_init (&htab->stub_hash_table, stub_hash_newfunc, |
3596 | sizeof (struct ppc_stub_hash_entry))) | |
721956f4 AM |
3597 | return NULL; |
3598 | ||
3599 | /* And the branch hash table. */ | |
66eb6687 AM |
3600 | if (!bfd_hash_table_init (&htab->branch_hash_table, branch_hash_newfunc, |
3601 | sizeof (struct ppc_branch_hash_entry))) | |
721956f4 AM |
3602 | return NULL; |
3603 | ||
3254fd24 AM |
3604 | /* Initializing two fields of the union is just cosmetic. We really |
3605 | only care about glist, but when compiled on a 32-bit host the | |
3606 | bfd_vma fields are larger. Setting the bfd_vma to zero makes | |
3607 | debugger inspection of these fields look nicer. */ | |
a6aa5195 AM |
3608 | htab->elf.init_got_refcount.refcount = 0; |
3609 | htab->elf.init_got_refcount.glist = NULL; | |
3610 | htab->elf.init_plt_refcount.refcount = 0; | |
3611 | htab->elf.init_plt_refcount.glist = NULL; | |
3612 | htab->elf.init_got_offset.offset = 0; | |
3613 | htab->elf.init_got_offset.glist = NULL; | |
3614 | htab->elf.init_plt_offset.offset = 0; | |
3615 | htab->elf.init_plt_offset.glist = NULL; | |
3254fd24 | 3616 | |
65f38f15 AM |
3617 | return &htab->elf.root; |
3618 | } | |
3619 | ||
721956f4 AM |
3620 | /* Free the derived linker hash table. */ |
3621 | ||
3622 | static void | |
4ce794b7 | 3623 | ppc64_elf_link_hash_table_free (struct bfd_link_hash_table *hash) |
721956f4 AM |
3624 | { |
3625 | struct ppc_link_hash_table *ret = (struct ppc_link_hash_table *) hash; | |
3626 | ||
3627 | bfd_hash_table_free (&ret->stub_hash_table); | |
3628 | bfd_hash_table_free (&ret->branch_hash_table); | |
3629 | _bfd_generic_link_hash_table_free (hash); | |
3630 | } | |
3631 | ||
e717da7e AM |
3632 | /* Satisfy the ELF linker by filling in some fields in our fake bfd. */ |
3633 | ||
3634 | void | |
3635 | ppc64_elf_init_stub_bfd (bfd *abfd, struct bfd_link_info *info) | |
3636 | { | |
3637 | struct ppc_link_hash_table *htab; | |
3638 | ||
3639 | elf_elfheader (abfd)->e_ident[EI_CLASS] = ELFCLASS64; | |
3640 | ||
3641 | /* Always hook our dynamic sections into the first bfd, which is the | |
3642 | linker created stub bfd. This ensures that the GOT header is at | |
3643 | the start of the output TOC section. */ | |
3644 | htab = ppc_hash_table (info); | |
3645 | htab->stub_bfd = abfd; | |
3646 | htab->elf.dynobj = abfd; | |
3647 | } | |
3648 | ||
721956f4 AM |
3649 | /* Build a name for an entry in the stub hash table. */ |
3650 | ||
3651 | static char * | |
4ce794b7 AM |
3652 | ppc_stub_name (const asection *input_section, |
3653 | const asection *sym_sec, | |
3654 | const struct ppc_link_hash_entry *h, | |
3655 | const Elf_Internal_Rela *rel) | |
721956f4 AM |
3656 | { |
3657 | char *stub_name; | |
3658 | bfd_size_type len; | |
3659 | ||
3660 | /* rel->r_addend is actually 64 bit, but who uses more than +/- 2^31 | |
3661 | offsets from a sym as a branch target? In fact, we could | |
3662 | probably assume the addend is always zero. */ | |
3663 | BFD_ASSERT (((int) rel->r_addend & 0xffffffff) == rel->r_addend); | |
3664 | ||
3665 | if (h) | |
3666 | { | |
3667 | len = 8 + 1 + strlen (h->elf.root.root.string) + 1 + 8 + 1; | |
3668 | stub_name = bfd_malloc (len); | |
46de2a7c AM |
3669 | if (stub_name == NULL) |
3670 | return stub_name; | |
3671 | ||
3672 | sprintf (stub_name, "%08x.%s+%x", | |
3673 | input_section->id & 0xffffffff, | |
3674 | h->elf.root.root.string, | |
3675 | (int) rel->r_addend & 0xffffffff); | |
721956f4 AM |
3676 | } |
3677 | else | |
3678 | { | |
ad8e1ba5 | 3679 | len = 8 + 1 + 8 + 1 + 8 + 1 + 8 + 1; |
721956f4 | 3680 | stub_name = bfd_malloc (len); |
46de2a7c AM |
3681 | if (stub_name == NULL) |
3682 | return stub_name; | |
3683 | ||
3684 | sprintf (stub_name, "%08x.%x:%x+%x", | |
3685 | input_section->id & 0xffffffff, | |
3686 | sym_sec->id & 0xffffffff, | |
3687 | (int) ELF64_R_SYM (rel->r_info) & 0xffffffff, | |
3688 | (int) rel->r_addend & 0xffffffff); | |
721956f4 | 3689 | } |
ee75fd95 AM |
3690 | if (stub_name[len - 2] == '+' && stub_name[len - 1] == '0') |
3691 | stub_name[len - 2] = 0; | |
721956f4 AM |
3692 | return stub_name; |
3693 | } | |
3694 | ||
3695 | /* Look up an entry in the stub hash. Stub entries are cached because | |
3696 | creating the stub name takes a bit of time. */ | |
3697 | ||
3698 | static struct ppc_stub_hash_entry * | |
4ce794b7 AM |
3699 | ppc_get_stub_entry (const asection *input_section, |
3700 | const asection *sym_sec, | |
039b3fef | 3701 | struct ppc_link_hash_entry *h, |
4ce794b7 AM |
3702 | const Elf_Internal_Rela *rel, |
3703 | struct ppc_link_hash_table *htab) | |
721956f4 AM |
3704 | { |
3705 | struct ppc_stub_hash_entry *stub_entry; | |
721956f4 AM |
3706 | const asection *id_sec; |
3707 | ||
3708 | /* If this input section is part of a group of sections sharing one | |
3709 | stub section, then use the id of the first section in the group. | |
3710 | Stub names need to include a section id, as there may well be | |
3711 | more than one stub used to reach say, printf, and we need to | |
3712 | distinguish between them. */ | |
3713 | id_sec = htab->stub_group[input_section->id].link_sec; | |
3714 | ||
b3fac117 AM |
3715 | if (h != NULL && h->u.stub_cache != NULL |
3716 | && h->u.stub_cache->h == h | |
3717 | && h->u.stub_cache->id_sec == id_sec) | |
721956f4 | 3718 | { |
b3fac117 | 3719 | stub_entry = h->u.stub_cache; |
721956f4 AM |
3720 | } |
3721 | else | |
3722 | { | |
3723 | char *stub_name; | |
3724 | ||
3725 | stub_name = ppc_stub_name (id_sec, sym_sec, h, rel); | |
3726 | if (stub_name == NULL) | |
3727 | return NULL; | |
3728 | ||
3729 | stub_entry = ppc_stub_hash_lookup (&htab->stub_hash_table, | |
b34976b6 | 3730 | stub_name, FALSE, FALSE); |
721956f4 | 3731 | if (h != NULL) |
b3fac117 | 3732 | h->u.stub_cache = stub_entry; |
721956f4 AM |
3733 | |
3734 | free (stub_name); | |
3735 | } | |
3736 | ||
3737 | return stub_entry; | |
3738 | } | |
3739 | ||
3740 | /* Add a new stub entry to the stub hash. Not all fields of the new | |
3741 | stub entry are initialised. */ | |
3742 | ||
3743 | static struct ppc_stub_hash_entry * | |
4ce794b7 AM |
3744 | ppc_add_stub (const char *stub_name, |
3745 | asection *section, | |
3746 | struct ppc_link_hash_table *htab) | |
721956f4 AM |
3747 | { |
3748 | asection *link_sec; | |
3749 | asection *stub_sec; | |
3750 | struct ppc_stub_hash_entry *stub_entry; | |
3751 | ||
3752 | link_sec = htab->stub_group[section->id].link_sec; | |
3753 | stub_sec = htab->stub_group[section->id].stub_sec; | |
3754 | if (stub_sec == NULL) | |
3755 | { | |
3756 | stub_sec = htab->stub_group[link_sec->id].stub_sec; | |
3757 | if (stub_sec == NULL) | |
3758 | { | |
d4c88bbb | 3759 | size_t namelen; |
721956f4 AM |
3760 | bfd_size_type len; |
3761 | char *s_name; | |
3762 | ||
d4c88bbb AM |
3763 | namelen = strlen (link_sec->name); |
3764 | len = namelen + sizeof (STUB_SUFFIX); | |
721956f4 AM |
3765 | s_name = bfd_alloc (htab->stub_bfd, len); |
3766 | if (s_name == NULL) | |
3767 | return NULL; | |
3768 | ||
d4c88bbb AM |
3769 | memcpy (s_name, link_sec->name, namelen); |
3770 | memcpy (s_name + namelen, STUB_SUFFIX, sizeof (STUB_SUFFIX)); | |
721956f4 AM |
3771 | stub_sec = (*htab->add_stub_section) (s_name, link_sec); |
3772 | if (stub_sec == NULL) | |
3773 | return NULL; | |
3774 | htab->stub_group[link_sec->id].stub_sec = stub_sec; | |
3775 | } | |
3776 | htab->stub_group[section->id].stub_sec = stub_sec; | |
3777 | } | |
3778 | ||
3779 | /* Enter this entry into the linker stub hash table. */ | |
3780 | stub_entry = ppc_stub_hash_lookup (&htab->stub_hash_table, stub_name, | |
b34976b6 | 3781 | TRUE, FALSE); |
721956f4 AM |
3782 | if (stub_entry == NULL) |
3783 | { | |
d003868e AM |
3784 | (*_bfd_error_handler) (_("%B: cannot create stub entry %s"), |
3785 | section->owner, stub_name); | |
721956f4 AM |
3786 | return NULL; |
3787 | } | |
3788 | ||
3789 | stub_entry->stub_sec = stub_sec; | |
3790 | stub_entry->stub_offset = 0; | |
3791 | stub_entry->id_sec = link_sec; | |
3792 | return stub_entry; | |
3793 | } | |
3794 | ||
82bd7b59 AM |
3795 | /* Create sections for linker generated code. */ |
3796 | ||
b34976b6 | 3797 | static bfd_boolean |
4ce794b7 | 3798 | create_linkage_sections (bfd *dynobj, struct bfd_link_info *info) |
82bd7b59 AM |
3799 | { |
3800 | struct ppc_link_hash_table *htab; | |
3801 | flagword flags; | |
3802 | ||
3803 | htab = ppc_hash_table (info); | |
3804 | ||
3805 | /* Create .sfpr for code to save and restore fp regs. */ | |
3806 | flags = (SEC_ALLOC | SEC_LOAD | SEC_CODE | SEC_READONLY | |
3807 | | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED); | |
3496cb2a L |
3808 | htab->sfpr = bfd_make_section_anyway_with_flags (dynobj, ".sfpr", |
3809 | flags); | |
82bd7b59 | 3810 | if (htab->sfpr == NULL |
82bd7b59 | 3811 | || ! bfd_set_section_alignment (dynobj, htab->sfpr, 2)) |
b34976b6 | 3812 | return FALSE; |
82bd7b59 | 3813 | |
721956f4 | 3814 | /* Create .glink for lazy dynamic linking support. */ |
3496cb2a L |
3815 | htab->glink = bfd_make_section_anyway_with_flags (dynobj, ".glink", |
3816 | flags); | |
4ce794b7 | 3817 | if (htab->glink == NULL |
ee4bf8d2 | 3818 | || ! bfd_set_section_alignment (dynobj, htab->glink, 3)) |
b34976b6 | 3819 | return FALSE; |
82bd7b59 | 3820 | |
c456f082 | 3821 | /* Create branch lookup table for plt_branch stubs. */ |
e4e0193e AM |
3822 | flags = (SEC_ALLOC | SEC_LOAD |
3823 | | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED); | |
3824 | htab->brlt = bfd_make_section_anyway_with_flags (dynobj, ".branch_lt", | |
3825 | flags); | |
4ce794b7 | 3826 | if (htab->brlt == NULL |
4ce794b7 | 3827 | || ! bfd_set_section_alignment (dynobj, htab->brlt, 3)) |
b34976b6 | 3828 | return FALSE; |
721956f4 | 3829 | |
e4e0193e | 3830 | if (!info->shared) |
c456f082 AM |
3831 | return TRUE; |
3832 | ||
e4e0193e AM |
3833 | flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY |
3834 | | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED); | |
3835 | htab->relbrlt = bfd_make_section_anyway_with_flags (dynobj, | |
3836 | ".rela.branch_lt", | |
3837 | flags); | |
c456f082 AM |
3838 | if (!htab->relbrlt |
3839 | || ! bfd_set_section_alignment (dynobj, htab->relbrlt, 3)) | |
3840 | return FALSE; | |
3841 | ||
b34976b6 | 3842 | return TRUE; |
82bd7b59 AM |
3843 | } |
3844 | ||
e717da7e AM |
3845 | /* Create .got and .rela.got sections in ABFD, and .got in dynobj if |
3846 | not already done. */ | |
65f38f15 | 3847 | |
b34976b6 | 3848 | static bfd_boolean |
e717da7e | 3849 | create_got_section (bfd *abfd, struct bfd_link_info *info) |
65f38f15 | 3850 | { |
e717da7e AM |
3851 | asection *got, *relgot; |
3852 | flagword flags; | |
3853 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
65f38f15 | 3854 | |
4ce794b7 | 3855 | if (!htab->got) |
e717da7e AM |
3856 | { |
3857 | if (! _bfd_elf_create_got_section (htab->elf.dynobj, info)) | |
3858 | return FALSE; | |
3859 | ||
3860 | htab->got = bfd_get_section_by_name (htab->elf.dynobj, ".got"); | |
3861 | if (!htab->got) | |
3862 | abort (); | |
3863 | } | |
3864 | ||
3865 | flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY | |
3866 | | SEC_LINKER_CREATED); | |
3867 | ||
c456f082 | 3868 | got = bfd_make_section_anyway_with_flags (abfd, ".got", flags); |
e717da7e | 3869 | if (!got |
e717da7e AM |
3870 | || !bfd_set_section_alignment (abfd, got, 3)) |
3871 | return FALSE; | |
65f38f15 | 3872 | |
c456f082 AM |
3873 | relgot = bfd_make_section_anyway_with_flags (abfd, ".rela.got", |
3874 | flags | SEC_READONLY); | |
e717da7e | 3875 | if (!relgot |
e717da7e | 3876 | || ! bfd_set_section_alignment (abfd, relgot, 3)) |
b34976b6 | 3877 | return FALSE; |
e717da7e AM |
3878 | |
3879 | ppc64_elf_tdata (abfd)->got = got; | |
3880 | ppc64_elf_tdata (abfd)->relgot = relgot; | |
b34976b6 | 3881 | return TRUE; |
65f38f15 | 3882 | } |
5bd4f169 | 3883 | |
82bd7b59 | 3884 | /* Create the dynamic sections, and set up shortcuts. */ |
5bd4f169 | 3885 | |
b34976b6 | 3886 | static bfd_boolean |
4ce794b7 | 3887 | ppc64_elf_create_dynamic_sections (bfd *dynobj, struct bfd_link_info *info) |
5bd4f169 | 3888 | { |
65f38f15 | 3889 | struct ppc_link_hash_table *htab; |
5bd4f169 | 3890 | |
65f38f15 | 3891 | if (!_bfd_elf_create_dynamic_sections (dynobj, info)) |
b34976b6 | 3892 | return FALSE; |
65f38f15 | 3893 | |
e717da7e AM |
3894 | htab = ppc_hash_table (info); |
3895 | if (!htab->got) | |
3896 | htab->got = bfd_get_section_by_name (dynobj, ".got"); | |
4ce794b7 AM |
3897 | htab->plt = bfd_get_section_by_name (dynobj, ".plt"); |
3898 | htab->relplt = bfd_get_section_by_name (dynobj, ".rela.plt"); | |
3899 | htab->dynbss = bfd_get_section_by_name (dynobj, ".dynbss"); | |
65f38f15 | 3900 | if (!info->shared) |
4ce794b7 | 3901 | htab->relbss = bfd_get_section_by_name (dynobj, ".rela.bss"); |
65f38f15 | 3902 | |
e717da7e | 3903 | if (!htab->got || !htab->plt || !htab->relplt || !htab->dynbss |
4ce794b7 | 3904 | || (!info->shared && !htab->relbss)) |
65f38f15 AM |
3905 | abort (); |
3906 | ||
b34976b6 | 3907 | return TRUE; |
5bd4f169 AM |
3908 | } |
3909 | ||
40d16e0b AM |
3910 | /* Merge PLT info on FROM with that on TO. */ |
3911 | ||
3912 | static void | |
3913 | move_plt_plist (struct ppc_link_hash_entry *from, | |
3914 | struct ppc_link_hash_entry *to) | |
3915 | { | |
3916 | if (from->elf.plt.plist != NULL) | |
3917 | { | |
3918 | if (to->elf.plt.plist != NULL) | |
3919 | { | |
3920 | struct plt_entry **entp; | |
3921 | struct plt_entry *ent; | |
3922 | ||
3923 | for (entp = &from->elf.plt.plist; (ent = *entp) != NULL; ) | |
3924 | { | |
3925 | struct plt_entry *dent; | |
3926 | ||
3927 | for (dent = to->elf.plt.plist; dent != NULL; dent = dent->next) | |
3928 | if (dent->addend == ent->addend) | |
3929 | { | |
3930 | dent->plt.refcount += ent->plt.refcount; | |
3931 | *entp = ent->next; | |
3932 | break; | |
3933 | } | |
3934 | if (dent == NULL) | |
3935 | entp = &ent->next; | |
3936 | } | |
3937 | *entp = to->elf.plt.plist; | |
3938 | } | |
3939 | ||
3940 | to->elf.plt.plist = from->elf.plt.plist; | |
3941 | from->elf.plt.plist = NULL; | |
3942 | } | |
3943 | } | |
3944 | ||
65f38f15 AM |
3945 | /* Copy the extra info we tack onto an elf_link_hash_entry. */ |
3946 | ||
3947 | static void | |
fcfa13d2 AM |
3948 | ppc64_elf_copy_indirect_symbol (struct bfd_link_info *info, |
3949 | struct elf_link_hash_entry *dir, | |
3950 | struct elf_link_hash_entry *ind) | |
65f38f15 AM |
3951 | { |
3952 | struct ppc_link_hash_entry *edir, *eind; | |
3953 | ||
3954 | edir = (struct ppc_link_hash_entry *) dir; | |
3955 | eind = (struct ppc_link_hash_entry *) ind; | |
3956 | ||
411e1bfb | 3957 | /* Copy over any dynamic relocs we may have on the indirect sym. */ |
bbd7ec4a | 3958 | if (eind->dyn_relocs != NULL) |
65f38f15 | 3959 | { |
bbd7ec4a AM |
3960 | if (edir->dyn_relocs != NULL) |
3961 | { | |
3962 | struct ppc_dyn_relocs **pp; | |
3963 | struct ppc_dyn_relocs *p; | |
3964 | ||
fcfa13d2 | 3965 | /* Add reloc counts against the indirect sym to the direct sym |
bbd7ec4a AM |
3966 | list. Merge any entries against the same section. */ |
3967 | for (pp = &eind->dyn_relocs; (p = *pp) != NULL; ) | |
3968 | { | |
3969 | struct ppc_dyn_relocs *q; | |
3970 | ||
3971 | for (q = edir->dyn_relocs; q != NULL; q = q->next) | |
3972 | if (q->sec == p->sec) | |
3973 | { | |
3974 | q->pc_count += p->pc_count; | |
3975 | q->count += p->count; | |
3976 | *pp = p->next; | |
3977 | break; | |
3978 | } | |
3979 | if (q == NULL) | |
3980 | pp = &p->next; | |
3981 | } | |
3982 | *pp = edir->dyn_relocs; | |
3983 | } | |
3984 | ||
65f38f15 AM |
3985 | edir->dyn_relocs = eind->dyn_relocs; |
3986 | eind->dyn_relocs = NULL; | |
3987 | } | |
65f38f15 | 3988 | |
6349e628 AM |
3989 | edir->is_func |= eind->is_func; |
3990 | edir->is_func_descriptor |= eind->is_func_descriptor; | |
58ac9f71 | 3991 | edir->tls_mask |= eind->tls_mask; |
6349e628 | 3992 | |
81848ca0 | 3993 | /* If called to transfer flags for a weakdef during processing |
f5385ebf | 3994 | of elf_adjust_dynamic_symbol, don't copy NON_GOT_REF. |
81848ca0 | 3995 | We clear it ourselves for ELIMINATE_COPY_RELOCS. */ |
f5385ebf AM |
3996 | if (!(ELIMINATE_COPY_RELOCS |
3997 | && eind->elf.root.type != bfd_link_hash_indirect | |
3998 | && edir->elf.dynamic_adjusted)) | |
3999 | edir->elf.non_got_ref |= eind->elf.non_got_ref; | |
81848ca0 | 4000 | |
f5385ebf AM |
4001 | edir->elf.ref_dynamic |= eind->elf.ref_dynamic; |
4002 | edir->elf.ref_regular |= eind->elf.ref_regular; | |
4003 | edir->elf.ref_regular_nonweak |= eind->elf.ref_regular_nonweak; | |
4004 | edir->elf.needs_plt |= eind->elf.needs_plt; | |
6349e628 AM |
4005 | |
4006 | /* If we were called to copy over info for a weak sym, that's all. */ | |
4007 | if (eind->elf.root.type != bfd_link_hash_indirect) | |
4008 | return; | |
4009 | ||
81848ca0 AM |
4010 | /* Copy over got entries that we may have already seen to the |
4011 | symbol which just became indirect. */ | |
411e1bfb AM |
4012 | if (eind->elf.got.glist != NULL) |
4013 | { | |
4014 | if (edir->elf.got.glist != NULL) | |
4015 | { | |
4016 | struct got_entry **entp; | |
4017 | struct got_entry *ent; | |
4018 | ||
4019 | for (entp = &eind->elf.got.glist; (ent = *entp) != NULL; ) | |
4020 | { | |
4021 | struct got_entry *dent; | |
4022 | ||
4023 | for (dent = edir->elf.got.glist; dent != NULL; dent = dent->next) | |
4024 | if (dent->addend == ent->addend | |
e717da7e | 4025 | && dent->owner == ent->owner |
411e1bfb AM |
4026 | && dent->tls_type == ent->tls_type) |
4027 | { | |
4028 | dent->got.refcount += ent->got.refcount; | |
4029 | *entp = ent->next; | |
4030 | break; | |
4031 | } | |
4032 | if (dent == NULL) | |
4033 | entp = &ent->next; | |
4034 | } | |
4035 | *entp = edir->elf.got.glist; | |
4036 | } | |
4037 | ||
4038 | edir->elf.got.glist = eind->elf.got.glist; | |
4039 | eind->elf.got.glist = NULL; | |
4040 | } | |
4041 | ||
4042 | /* And plt entries. */ | |
40d16e0b | 4043 | move_plt_plist (eind, edir); |
411e1bfb | 4044 | |
fcfa13d2 | 4045 | if (eind->elf.dynindx != -1) |
411e1bfb | 4046 | { |
fcfa13d2 AM |
4047 | if (edir->elf.dynindx != -1) |
4048 | _bfd_elf_strtab_delref (elf_hash_table (info)->dynstr, | |
4049 | edir->elf.dynstr_index); | |
411e1bfb AM |
4050 | edir->elf.dynindx = eind->elf.dynindx; |
4051 | edir->elf.dynstr_index = eind->elf.dynstr_index; | |
4052 | eind->elf.dynindx = -1; | |
4053 | eind->elf.dynstr_index = 0; | |
4054 | } | |
411e1bfb AM |
4055 | } |
4056 | ||
8387904d AM |
4057 | /* Find the function descriptor hash entry from the given function code |
4058 | hash entry FH. Link the entries via their OH fields. */ | |
4059 | ||
4060 | static struct ppc_link_hash_entry * | |
4061 | get_fdh (struct ppc_link_hash_entry *fh, struct ppc_link_hash_table *htab) | |
4062 | { | |
4063 | struct ppc_link_hash_entry *fdh = fh->oh; | |
4064 | ||
4065 | if (fdh == NULL) | |
4066 | { | |
4067 | const char *fd_name = fh->elf.root.root.string + 1; | |
4068 | ||
4069 | fdh = (struct ppc_link_hash_entry *) | |
4070 | elf_link_hash_lookup (&htab->elf, fd_name, FALSE, FALSE, FALSE); | |
4071 | if (fdh != NULL) | |
4072 | { | |
4073 | fdh->is_func_descriptor = 1; | |
4074 | fdh->oh = fh; | |
4075 | fh->is_func = 1; | |
4076 | fh->oh = fdh; | |
4077 | } | |
4078 | } | |
4079 | ||
4080 | return fdh; | |
4081 | } | |
4082 | ||
bb700d78 AM |
4083 | /* Make a fake function descriptor sym for the code sym FH. */ |
4084 | ||
4085 | static struct ppc_link_hash_entry * | |
4086 | make_fdh (struct bfd_link_info *info, | |
908b32fc | 4087 | struct ppc_link_hash_entry *fh) |
bb700d78 AM |
4088 | { |
4089 | bfd *abfd; | |
4090 | asymbol *newsym; | |
4091 | struct bfd_link_hash_entry *bh; | |
4092 | struct ppc_link_hash_entry *fdh; | |
4093 | ||
4094 | abfd = fh->elf.root.u.undef.abfd; | |
4095 | newsym = bfd_make_empty_symbol (abfd); | |
4096 | newsym->name = fh->elf.root.root.string + 1; | |
4097 | newsym->section = bfd_und_section_ptr; | |
4098 | newsym->value = 0; | |
908b32fc | 4099 | newsym->flags = BSF_WEAK; |
bb700d78 AM |
4100 | |
4101 | bh = NULL; | |
4102 | if (!_bfd_generic_link_add_one_symbol (info, abfd, newsym->name, | |
4103 | newsym->flags, newsym->section, | |
4104 | newsym->value, NULL, FALSE, FALSE, | |
4105 | &bh)) | |
4106 | return NULL; | |
4107 | ||
4108 | fdh = (struct ppc_link_hash_entry *) bh; | |
4109 | fdh->elf.non_elf = 0; | |
908b32fc AM |
4110 | fdh->fake = 1; |
4111 | fdh->is_func_descriptor = 1; | |
4112 | fdh->oh = fh; | |
4113 | fh->is_func = 1; | |
4114 | fh->oh = fdh; | |
bb700d78 AM |
4115 | return fdh; |
4116 | } | |
4117 | ||
8387904d AM |
4118 | /* Fix function descriptor symbols defined in .opd sections to be |
4119 | function type. */ | |
555cd476 AM |
4120 | |
4121 | static bfd_boolean | |
b3fac117 | 4122 | ppc64_elf_add_symbol_hook (bfd *ibfd ATTRIBUTE_UNUSED, |
555cd476 AM |
4123 | struct bfd_link_info *info ATTRIBUTE_UNUSED, |
4124 | Elf_Internal_Sym *isym, | |
b3fac117 | 4125 | const char **name ATTRIBUTE_UNUSED, |
555cd476 AM |
4126 | flagword *flags ATTRIBUTE_UNUSED, |
4127 | asection **sec, | |
4128 | bfd_vma *value ATTRIBUTE_UNUSED) | |
4129 | { | |
8843416a AM |
4130 | if (*sec != NULL |
4131 | && strcmp (bfd_get_section_name (ibfd, *sec), ".opd") == 0) | |
555cd476 | 4132 | isym->st_info = ELF_ST_INFO (ELF_ST_BIND (isym->st_info), STT_FUNC); |
433817dd | 4133 | |
555cd476 AM |
4134 | return TRUE; |
4135 | } | |
4136 | ||
8387904d | 4137 | /* This function makes an old ABI object reference to ".bar" cause the |
908b32fc AM |
4138 | inclusion of a new ABI object archive that defines "bar". |
4139 | NAME is a symbol defined in an archive. Return a symbol in the hash | |
4140 | table that might be satisfied by the archive symbols. */ | |
8387904d AM |
4141 | |
4142 | static struct elf_link_hash_entry * | |
4143 | ppc64_elf_archive_symbol_lookup (bfd *abfd, | |
4144 | struct bfd_link_info *info, | |
4145 | const char *name) | |
4146 | { | |
4147 | struct elf_link_hash_entry *h; | |
4148 | char *dot_name; | |
4149 | size_t len; | |
4150 | ||
4151 | h = _bfd_elf_archive_symbol_lookup (abfd, info, name); | |
908b32fc AM |
4152 | if (h != NULL |
4153 | /* Don't return this sym if it is a fake function descriptor | |
4154 | created by add_symbol_adjust. */ | |
4155 | && !(h->root.type == bfd_link_hash_undefweak | |
4156 | && ((struct ppc_link_hash_entry *) h)->fake)) | |
8387904d AM |
4157 | return h; |
4158 | ||
4159 | if (name[0] == '.') | |
4160 | return h; | |
4161 | ||
4162 | len = strlen (name); | |
4163 | dot_name = bfd_alloc (abfd, len + 2); | |
4164 | if (dot_name == NULL) | |
4165 | return (struct elf_link_hash_entry *) 0 - 1; | |
4166 | dot_name[0] = '.'; | |
4167 | memcpy (dot_name + 1, name, len + 1); | |
4168 | h = _bfd_elf_archive_symbol_lookup (abfd, info, dot_name); | |
4169 | bfd_release (abfd, dot_name); | |
4170 | return h; | |
4171 | } | |
4172 | ||
4173 | /* This function satisfies all old ABI object references to ".bar" if a | |
99877b66 AM |
4174 | new ABI object defines "bar". Well, at least, undefined dot symbols |
4175 | are made weak. This stops later archive searches from including an | |
4176 | object if we already have a function descriptor definition. It also | |
35b0ce59 AM |
4177 | prevents the linker complaining about undefined symbols. |
4178 | We also check and correct mismatched symbol visibility here. The | |
4179 | most restrictive visibility of the function descriptor and the | |
4180 | function entry symbol is used. */ | |
8387904d AM |
4181 | |
4182 | static bfd_boolean | |
b3fac117 | 4183 | add_symbol_adjust (struct ppc_link_hash_entry *eh, struct bfd_link_info *info) |
8387904d | 4184 | { |
8387904d AM |
4185 | struct ppc_link_hash_table *htab; |
4186 | struct ppc_link_hash_entry *fdh; | |
4187 | ||
b3fac117 | 4188 | if (eh->elf.root.type == bfd_link_hash_indirect) |
8387904d AM |
4189 | return TRUE; |
4190 | ||
b3fac117 AM |
4191 | if (eh->elf.root.type == bfd_link_hash_warning) |
4192 | eh = (struct ppc_link_hash_entry *) eh->elf.root.u.i.link; | |
8387904d | 4193 | |
b3fac117 AM |
4194 | if (eh->elf.root.root.string[0] != '.') |
4195 | abort (); | |
8387904d | 4196 | |
b3fac117 | 4197 | htab = ppc_hash_table (info); |
99877b66 | 4198 | fdh = get_fdh (eh, htab); |
bb700d78 | 4199 | if (fdh == NULL |
b3fac117 | 4200 | && !info->relocatable |
bb700d78 AM |
4201 | && (eh->elf.root.type == bfd_link_hash_undefined |
4202 | || eh->elf.root.type == bfd_link_hash_undefweak) | |
4203 | && eh->elf.ref_regular) | |
4204 | { | |
4205 | /* Make an undefweak function descriptor sym, which is enough to | |
4206 | pull in an --as-needed shared lib, but won't cause link | |
4207 | errors. Archives are handled elsewhere. */ | |
b3fac117 | 4208 | fdh = make_fdh (info, eh); |
bb700d78 | 4209 | if (fdh == NULL) |
b3fac117 | 4210 | return FALSE; |
bb700d78 AM |
4211 | else |
4212 | fdh->elf.ref_regular = 1; | |
4213 | } | |
e87d886e | 4214 | else if (fdh != NULL) |
8387904d | 4215 | { |
35b0ce59 AM |
4216 | unsigned entry_vis = ELF_ST_VISIBILITY (eh->elf.other) - 1; |
4217 | unsigned descr_vis = ELF_ST_VISIBILITY (fdh->elf.other) - 1; | |
4218 | if (entry_vis < descr_vis) | |
4219 | fdh->elf.other += entry_vis - descr_vis; | |
4220 | else if (entry_vis > descr_vis) | |
4221 | eh->elf.other += descr_vis - entry_vis; | |
4222 | ||
e87d886e AM |
4223 | if ((fdh->elf.root.type == bfd_link_hash_defined |
4224 | || fdh->elf.root.type == bfd_link_hash_defweak) | |
4225 | && eh->elf.root.type == bfd_link_hash_undefined) | |
35b0ce59 AM |
4226 | { |
4227 | eh->elf.root.type = bfd_link_hash_undefweak; | |
4228 | eh->was_undefined = 1; | |
4229 | htab->twiddled_syms = 1; | |
4230 | } | |
8387904d | 4231 | } |
99877b66 | 4232 | |
8387904d AM |
4233 | return TRUE; |
4234 | } | |
4235 | ||
b3fac117 AM |
4236 | /* Process list of dot-symbols we made in link_hash_newfunc. */ |
4237 | ||
8387904d | 4238 | static bfd_boolean |
b3fac117 | 4239 | ppc64_elf_check_directives (bfd *ibfd, struct bfd_link_info *info) |
8387904d | 4240 | { |
99877b66 | 4241 | struct ppc_link_hash_table *htab; |
b3fac117 | 4242 | struct ppc_link_hash_entry **p, *eh; |
433817dd | 4243 | |
99877b66 | 4244 | htab = ppc_hash_table (info); |
ee75fd95 | 4245 | if (!is_ppc64_elf_target (htab->elf.root.creator)) |
35b0ce59 AM |
4246 | return TRUE; |
4247 | ||
b3fac117 AM |
4248 | if (is_ppc64_elf_target (ibfd->xvec)) |
4249 | { | |
4250 | p = &htab->dot_syms; | |
4251 | while ((eh = *p) != NULL) | |
4252 | { | |
4253 | *p = NULL; | |
4254 | if (!add_symbol_adjust (eh, info)) | |
4255 | return FALSE; | |
4256 | p = &eh->u.next_dot_sym; | |
4257 | } | |
4258 | } | |
4259 | ||
4260 | /* Clear the list for non-ppc64 input files. */ | |
4261 | p = &htab->dot_syms; | |
4262 | while ((eh = *p) != NULL) | |
4263 | { | |
4264 | *p = NULL; | |
4265 | p = &eh->u.next_dot_sym; | |
4266 | } | |
99877b66 AM |
4267 | |
4268 | /* We need to fix the undefs list for any syms we have twiddled to | |
4269 | undef_weak. */ | |
4270 | if (htab->twiddled_syms) | |
4271 | { | |
77cfaee6 | 4272 | bfd_link_repair_undef_list (&htab->elf.root); |
99877b66 AM |
4273 | htab->twiddled_syms = 0; |
4274 | } | |
b3fac117 | 4275 | return TRUE; |
8387904d AM |
4276 | } |
4277 | ||
97fed1c9 JJ |
4278 | /* Undo hash table changes when an --as-needed input file is determined |
4279 | not to be needed. */ | |
4280 | ||
4281 | static bfd_boolean | |
4282 | ppc64_elf_as_needed_cleanup (bfd *ibfd ATTRIBUTE_UNUSED, | |
4283 | struct bfd_link_info *info) | |
4284 | { | |
4285 | ppc_hash_table (info)->dot_syms = NULL; | |
4286 | return TRUE; | |
4287 | } | |
4288 | ||
411e1bfb | 4289 | static bfd_boolean |
4ce794b7 AM |
4290 | update_local_sym_info (bfd *abfd, Elf_Internal_Shdr *symtab_hdr, |
4291 | unsigned long r_symndx, bfd_vma r_addend, int tls_type) | |
411e1bfb AM |
4292 | { |
4293 | struct got_entry **local_got_ents = elf_local_got_ents (abfd); | |
e7b938ca | 4294 | char *local_got_tls_masks; |
411e1bfb AM |
4295 | |
4296 | if (local_got_ents == NULL) | |
4297 | { | |
4298 | bfd_size_type size = symtab_hdr->sh_info; | |
4299 | ||
e7b938ca | 4300 | size *= sizeof (*local_got_ents) + sizeof (*local_got_tls_masks); |
4ce794b7 | 4301 | local_got_ents = bfd_zalloc (abfd, size); |
411e1bfb AM |
4302 | if (local_got_ents == NULL) |
4303 | return FALSE; | |
4304 | elf_local_got_ents (abfd) = local_got_ents; | |
4305 | } | |
4306 | ||
4307 | if ((tls_type & TLS_EXPLICIT) == 0) | |
4308 | { | |
4309 | struct got_entry *ent; | |
4310 | ||
4311 | for (ent = local_got_ents[r_symndx]; ent != NULL; ent = ent->next) | |
e717da7e AM |
4312 | if (ent->addend == r_addend |
4313 | && ent->owner == abfd | |
4314 | && ent->tls_type == tls_type) | |
411e1bfb AM |
4315 | break; |
4316 | if (ent == NULL) | |
4317 | { | |
4318 | bfd_size_type amt = sizeof (*ent); | |
4ce794b7 | 4319 | ent = bfd_alloc (abfd, amt); |
411e1bfb AM |
4320 | if (ent == NULL) |
4321 | return FALSE; | |
4322 | ent->next = local_got_ents[r_symndx]; | |
4323 | ent->addend = r_addend; | |
e717da7e | 4324 | ent->owner = abfd; |
411e1bfb AM |
4325 | ent->tls_type = tls_type; |
4326 | ent->got.refcount = 0; | |
4327 | local_got_ents[r_symndx] = ent; | |
4328 | } | |
4329 | ent->got.refcount += 1; | |
4330 | } | |
4331 | ||
e7b938ca AM |
4332 | local_got_tls_masks = (char *) (local_got_ents + symtab_hdr->sh_info); |
4333 | local_got_tls_masks[r_symndx] |= tls_type; | |
411e1bfb | 4334 | return TRUE; |
65f38f15 AM |
4335 | } |
4336 | ||
411e1bfb | 4337 | static bfd_boolean |
4ce794b7 | 4338 | update_plt_info (bfd *abfd, struct ppc_link_hash_entry *eh, bfd_vma addend) |
1e2f5b6e | 4339 | { |
411e1bfb | 4340 | struct plt_entry *ent; |
1e2f5b6e | 4341 | |
411e1bfb AM |
4342 | for (ent = eh->elf.plt.plist; ent != NULL; ent = ent->next) |
4343 | if (ent->addend == addend) | |
4344 | break; | |
4345 | if (ent == NULL) | |
1e2f5b6e | 4346 | { |
411e1bfb | 4347 | bfd_size_type amt = sizeof (*ent); |
4ce794b7 | 4348 | ent = bfd_alloc (abfd, amt); |
411e1bfb AM |
4349 | if (ent == NULL) |
4350 | return FALSE; | |
4351 | ent->next = eh->elf.plt.plist; | |
4352 | ent->addend = addend; | |
4353 | ent->plt.refcount = 0; | |
4354 | eh->elf.plt.plist = ent; | |
1e2f5b6e | 4355 | } |
411e1bfb | 4356 | ent->plt.refcount += 1; |
f5385ebf | 4357 | eh->elf.needs_plt = 1; |
93f3fa99 AM |
4358 | if (eh->elf.root.root.string[0] == '.' |
4359 | && eh->elf.root.root.string[1] != '\0') | |
4360 | eh->is_func = 1; | |
b34976b6 | 4361 | return TRUE; |
1e2f5b6e AM |
4362 | } |
4363 | ||
5bd4f169 | 4364 | /* Look through the relocs for a section during the first phase, and |
65f38f15 | 4365 | calculate needed space in the global offset table, procedure |
5d1634d7 | 4366 | linkage table, and dynamic reloc sections. */ |
5bd4f169 | 4367 | |
b34976b6 | 4368 | static bfd_boolean |
4ce794b7 AM |
4369 | ppc64_elf_check_relocs (bfd *abfd, struct bfd_link_info *info, |
4370 | asection *sec, const Elf_Internal_Rela *relocs) | |
5bd4f169 | 4371 | { |
65f38f15 | 4372 | struct ppc_link_hash_table *htab; |
5bd4f169 AM |
4373 | Elf_Internal_Shdr *symtab_hdr; |
4374 | struct elf_link_hash_entry **sym_hashes, **sym_hashes_end; | |
4375 | const Elf_Internal_Rela *rel; | |
4376 | const Elf_Internal_Rela *rel_end; | |
5bd4f169 | 4377 | asection *sreloc; |
1e2f5b6e | 4378 | asection **opd_sym_map; |
5bd4f169 | 4379 | |
1049f94e | 4380 | if (info->relocatable) |
b34976b6 | 4381 | return TRUE; |
5bd4f169 | 4382 | |
680a3378 AM |
4383 | /* Don't do anything special with non-loaded, non-alloced sections. |
4384 | In particular, any relocs in such sections should not affect GOT | |
4385 | and PLT reference counting (ie. we don't allow them to create GOT | |
4386 | or PLT entries), there's no possibility or desire to optimize TLS | |
4387 | relocs, and there's not much point in propagating relocs to shared | |
4388 | libs that the dynamic linker won't relocate. */ | |
4389 | if ((sec->flags & SEC_ALLOC) == 0) | |
4390 | return TRUE; | |
4391 | ||
65f38f15 | 4392 | htab = ppc_hash_table (info); |
5bd4f169 | 4393 | symtab_hdr = &elf_tdata (abfd)->symtab_hdr; |
5bd4f169 AM |
4394 | |
4395 | sym_hashes = elf_sym_hashes (abfd); | |
4396 | sym_hashes_end = (sym_hashes | |
1e2f5b6e AM |
4397 | + symtab_hdr->sh_size / sizeof (Elf64_External_Sym) |
4398 | - symtab_hdr->sh_info); | |
5bd4f169 AM |
4399 | |
4400 | sreloc = NULL; | |
1e2f5b6e AM |
4401 | opd_sym_map = NULL; |
4402 | if (strcmp (bfd_get_section_name (abfd, sec), ".opd") == 0) | |
4403 | { | |
4404 | /* Garbage collection needs some extra help with .opd sections. | |
4405 | We don't want to necessarily keep everything referenced by | |
4406 | relocs in .opd, as that would keep all functions. Instead, | |
4407 | if we reference an .opd symbol (a function descriptor), we | |
4408 | want to keep the function code symbol's section. This is | |
4409 | easy for global symbols, but for local syms we need to keep | |
4410 | information about the associated function section. Later, if | |
4411 | edit_opd deletes entries, we'll use this array to adjust | |
4412 | local syms in .opd. */ | |
4413 | union opd_info { | |
4414 | asection *func_section; | |
4415 | long entry_adjust; | |
4416 | }; | |
4417 | bfd_size_type amt; | |
4418 | ||
3f764659 | 4419 | amt = sec->size * sizeof (union opd_info) / 8; |
4ce794b7 | 4420 | opd_sym_map = bfd_zalloc (abfd, amt); |
1e2f5b6e | 4421 | if (opd_sym_map == NULL) |
b34976b6 | 4422 | return FALSE; |
7c8fe5c4 AM |
4423 | ppc64_elf_section_data (sec)->u.opd_func_sec = opd_sym_map; |
4424 | BFD_ASSERT (ppc64_elf_section_data (sec)->sec_type == sec_normal); | |
4425 | ppc64_elf_section_data (sec)->sec_type = sec_opd; | |
1e2f5b6e | 4426 | } |
5bd4f169 | 4427 | |
82bd7b59 AM |
4428 | if (htab->sfpr == NULL |
4429 | && !create_linkage_sections (htab->elf.dynobj, info)) | |
b34976b6 | 4430 | return FALSE; |
82bd7b59 | 4431 | |
5bd4f169 AM |
4432 | rel_end = relocs + sec->reloc_count; |
4433 | for (rel = relocs; rel < rel_end; rel++) | |
4434 | { | |
4435 | unsigned long r_symndx; | |
4436 | struct elf_link_hash_entry *h; | |
04c9666a | 4437 | enum elf_ppc64_reloc_type r_type; |
411e1bfb | 4438 | int tls_type = 0; |
7c8fe5c4 | 4439 | struct _ppc64_elf_section_data *ppc64_sec; |
5bd4f169 AM |
4440 | |
4441 | r_symndx = ELF64_R_SYM (rel->r_info); | |
4442 | if (r_symndx < symtab_hdr->sh_info) | |
4443 | h = NULL; | |
4444 | else | |
973a3492 L |
4445 | { |
4446 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; | |
4447 | while (h->root.type == bfd_link_hash_indirect | |
4448 | || h->root.type == bfd_link_hash_warning) | |
4449 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
4450 | } | |
5bd4f169 | 4451 | |
4ce794b7 | 4452 | r_type = ELF64_R_TYPE (rel->r_info); |
a33d1f77 | 4453 | switch (r_type) |
5bd4f169 | 4454 | { |
411e1bfb AM |
4455 | case R_PPC64_GOT_TLSLD16: |
4456 | case R_PPC64_GOT_TLSLD16_LO: | |
4457 | case R_PPC64_GOT_TLSLD16_HI: | |
4458 | case R_PPC64_GOT_TLSLD16_HA: | |
e717da7e | 4459 | ppc64_tlsld_got (abfd)->refcount += 1; |
951fd09b | 4460 | tls_type = TLS_TLS | TLS_LD; |
411e1bfb AM |
4461 | goto dogottls; |
4462 | ||
4463 | case R_PPC64_GOT_TLSGD16: | |
4464 | case R_PPC64_GOT_TLSGD16_LO: | |
4465 | case R_PPC64_GOT_TLSGD16_HI: | |
4466 | case R_PPC64_GOT_TLSGD16_HA: | |
951fd09b | 4467 | tls_type = TLS_TLS | TLS_GD; |
411e1bfb AM |
4468 | goto dogottls; |
4469 | ||
4470 | case R_PPC64_GOT_TPREL16_DS: | |
4471 | case R_PPC64_GOT_TPREL16_LO_DS: | |
4472 | case R_PPC64_GOT_TPREL16_HI: | |
4473 | case R_PPC64_GOT_TPREL16_HA: | |
4474 | if (info->shared) | |
4475 | info->flags |= DF_STATIC_TLS; | |
4476 | tls_type = TLS_TLS | TLS_TPREL; | |
4477 | goto dogottls; | |
4478 | ||
4479 | case R_PPC64_GOT_DTPREL16_DS: | |
4480 | case R_PPC64_GOT_DTPREL16_LO_DS: | |
4481 | case R_PPC64_GOT_DTPREL16_HI: | |
4482 | case R_PPC64_GOT_DTPREL16_HA: | |
4483 | tls_type = TLS_TLS | TLS_DTPREL; | |
4484 | dogottls: | |
4485 | sec->has_tls_reloc = 1; | |
4486 | /* Fall thru */ | |
4487 | ||
5bd4f169 | 4488 | case R_PPC64_GOT16: |
5bd4f169 | 4489 | case R_PPC64_GOT16_DS: |
65f38f15 AM |
4490 | case R_PPC64_GOT16_HA: |
4491 | case R_PPC64_GOT16_HI: | |
4492 | case R_PPC64_GOT16_LO: | |
5bd4f169 | 4493 | case R_PPC64_GOT16_LO_DS: |
65f38f15 | 4494 | /* This symbol requires a global offset table entry. */ |
4c52953f | 4495 | sec->has_toc_reloc = 1; |
e717da7e AM |
4496 | if (ppc64_elf_tdata (abfd)->got == NULL |
4497 | && !create_got_section (abfd, info)) | |
b34976b6 | 4498 | return FALSE; |
5bd4f169 AM |
4499 | |
4500 | if (h != NULL) | |
4501 | { | |
411e1bfb AM |
4502 | struct ppc_link_hash_entry *eh; |
4503 | struct got_entry *ent; | |
65f38f15 | 4504 | |
411e1bfb AM |
4505 | eh = (struct ppc_link_hash_entry *) h; |
4506 | for (ent = eh->elf.got.glist; ent != NULL; ent = ent->next) | |
4507 | if (ent->addend == rel->r_addend | |
e717da7e | 4508 | && ent->owner == abfd |
411e1bfb AM |
4509 | && ent->tls_type == tls_type) |
4510 | break; | |
4511 | if (ent == NULL) | |
5bd4f169 | 4512 | { |
411e1bfb | 4513 | bfd_size_type amt = sizeof (*ent); |
4ce794b7 | 4514 | ent = bfd_alloc (abfd, amt); |
411e1bfb | 4515 | if (ent == NULL) |
b34976b6 | 4516 | return FALSE; |
411e1bfb AM |
4517 | ent->next = eh->elf.got.glist; |
4518 | ent->addend = rel->r_addend; | |
e717da7e | 4519 | ent->owner = abfd; |
411e1bfb AM |
4520 | ent->tls_type = tls_type; |
4521 | ent->got.refcount = 0; | |
4522 | eh->elf.got.glist = ent; | |
5bd4f169 | 4523 | } |
411e1bfb | 4524 | ent->got.refcount += 1; |
e7b938ca | 4525 | eh->tls_mask |= tls_type; |
5bd4f169 | 4526 | } |
411e1bfb AM |
4527 | else |
4528 | /* This is a global offset table entry for a local symbol. */ | |
4529 | if (!update_local_sym_info (abfd, symtab_hdr, r_symndx, | |
4530 | rel->r_addend, tls_type)) | |
4531 | return FALSE; | |
5bd4f169 AM |
4532 | break; |
4533 | ||
5bd4f169 | 4534 | case R_PPC64_PLT16_HA: |
65f38f15 AM |
4535 | case R_PPC64_PLT16_HI: |
4536 | case R_PPC64_PLT16_LO: | |
4537 | case R_PPC64_PLT32: | |
4538 | case R_PPC64_PLT64: | |
5bd4f169 | 4539 | /* This symbol requires a procedure linkage table entry. We |
3fad3c7c AM |
4540 | actually build the entry in adjust_dynamic_symbol, |
4541 | because this might be a case of linking PIC code without | |
4542 | linking in any dynamic objects, in which case we don't | |
4543 | need to generate a procedure linkage table after all. */ | |
5bd4f169 AM |
4544 | if (h == NULL) |
4545 | { | |
4546 | /* It does not make sense to have a procedure linkage | |
3fad3c7c | 4547 | table entry for a local symbol. */ |
5bd4f169 | 4548 | bfd_set_error (bfd_error_bad_value); |
b34976b6 | 4549 | return FALSE; |
5bd4f169 | 4550 | } |
411e1bfb AM |
4551 | else |
4552 | if (!update_plt_info (abfd, (struct ppc_link_hash_entry *) h, | |
4553 | rel->r_addend)) | |
4554 | return FALSE; | |
5bd4f169 AM |
4555 | break; |
4556 | ||
4557 | /* The following relocations don't need to propagate the | |
4558 | relocation if linking a shared object since they are | |
4559 | section relative. */ | |
4560 | case R_PPC64_SECTOFF: | |
4561 | case R_PPC64_SECTOFF_LO: | |
4562 | case R_PPC64_SECTOFF_HI: | |
4563 | case R_PPC64_SECTOFF_HA: | |
4564 | case R_PPC64_SECTOFF_DS: | |
4565 | case R_PPC64_SECTOFF_LO_DS: | |
411e1bfb AM |
4566 | case R_PPC64_DTPREL16: |
4567 | case R_PPC64_DTPREL16_LO: | |
4568 | case R_PPC64_DTPREL16_HI: | |
4569 | case R_PPC64_DTPREL16_HA: | |
4570 | case R_PPC64_DTPREL16_DS: | |
4571 | case R_PPC64_DTPREL16_LO_DS: | |
4572 | case R_PPC64_DTPREL16_HIGHER: | |
4573 | case R_PPC64_DTPREL16_HIGHERA: | |
4574 | case R_PPC64_DTPREL16_HIGHEST: | |
4575 | case R_PPC64_DTPREL16_HIGHESTA: | |
5bd4f169 AM |
4576 | break; |
4577 | ||
ad8e1ba5 AM |
4578 | /* Nor do these. */ |
4579 | case R_PPC64_TOC16: | |
4580 | case R_PPC64_TOC16_LO: | |
4581 | case R_PPC64_TOC16_HI: | |
4582 | case R_PPC64_TOC16_HA: | |
4583 | case R_PPC64_TOC16_DS: | |
4584 | case R_PPC64_TOC16_LO_DS: | |
4c52953f | 4585 | sec->has_toc_reloc = 1; |
ad8e1ba5 AM |
4586 | break; |
4587 | ||
5bd4f169 AM |
4588 | /* This relocation describes the C++ object vtable hierarchy. |
4589 | Reconstruct it for later use during GC. */ | |
4590 | case R_PPC64_GNU_VTINHERIT: | |
c152c796 | 4591 | if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset)) |
b34976b6 | 4592 | return FALSE; |
5bd4f169 AM |
4593 | break; |
4594 | ||
4595 | /* This relocation describes which C++ vtable entries are actually | |
4596 | used. Record for later use during GC. */ | |
4597 | case R_PPC64_GNU_VTENTRY: | |
c152c796 | 4598 | if (!bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend)) |
b34976b6 | 4599 | return FALSE; |
5bd4f169 AM |
4600 | break; |
4601 | ||
721956f4 AM |
4602 | case R_PPC64_REL14: |
4603 | case R_PPC64_REL14_BRTAKEN: | |
4604 | case R_PPC64_REL14_BRNTAKEN: | |
220c76dd AM |
4605 | { |
4606 | asection *dest = NULL; | |
4607 | ||
4608 | /* Heuristic: If jumping outside our section, chances are | |
4609 | we are going to need a stub. */ | |
4610 | if (h != NULL) | |
4611 | { | |
4612 | /* If the sym is weak it may be overridden later, so | |
4613 | don't assume we know where a weak sym lives. */ | |
4614 | if (h->root.type == bfd_link_hash_defined) | |
4615 | dest = h->root.u.def.section; | |
4616 | } | |
4617 | else | |
4618 | dest = bfd_section_from_r_symndx (abfd, &htab->sym_sec, | |
4619 | sec, r_symndx); | |
4620 | if (dest != sec) | |
7c8fe5c4 | 4621 | ppc64_elf_section_data (sec)->has_14bit_branch = 1; |
220c76dd | 4622 | } |
721956f4 AM |
4623 | /* Fall through. */ |
4624 | ||
5d1634d7 | 4625 | case R_PPC64_REL24: |
8387904d | 4626 | if (h != NULL) |
5d1634d7 AM |
4627 | { |
4628 | /* We may need a .plt entry if the function this reloc | |
4629 | refers to is in a shared lib. */ | |
411e1bfb AM |
4630 | if (!update_plt_info (abfd, (struct ppc_link_hash_entry *) h, |
4631 | rel->r_addend)) | |
4632 | return FALSE; | |
8387904d AM |
4633 | if (h == &htab->tls_get_addr->elf |
4634 | || h == &htab->tls_get_addr_fd->elf) | |
411e1bfb | 4635 | sec->has_tls_reloc = 1; |
8387904d | 4636 | else if (htab->tls_get_addr == NULL |
0112cd26 | 4637 | && CONST_STRNEQ (h->root.root.string, ".__tls_get_addr") |
a48ebf4d AM |
4638 | && (h->root.root.string[15] == 0 |
4639 | || h->root.root.string[15] == '@')) | |
411e1bfb | 4640 | { |
8387904d AM |
4641 | htab->tls_get_addr = (struct ppc_link_hash_entry *) h; |
4642 | sec->has_tls_reloc = 1; | |
4643 | } | |
4644 | else if (htab->tls_get_addr_fd == NULL | |
0112cd26 | 4645 | && CONST_STRNEQ (h->root.root.string, "__tls_get_addr") |
8387904d AM |
4646 | && (h->root.root.string[14] == 0 |
4647 | || h->root.root.string[14] == '@')) | |
4648 | { | |
4649 | htab->tls_get_addr_fd = (struct ppc_link_hash_entry *) h; | |
411e1bfb AM |
4650 | sec->has_tls_reloc = 1; |
4651 | } | |
4652 | } | |
4653 | break; | |
4654 | ||
4655 | case R_PPC64_TPREL64: | |
4656 | tls_type = TLS_EXPLICIT | TLS_TLS | TLS_TPREL; | |
4657 | if (info->shared) | |
4658 | info->flags |= DF_STATIC_TLS; | |
4659 | goto dotlstoc; | |
4660 | ||
4661 | case R_PPC64_DTPMOD64: | |
4662 | if (rel + 1 < rel_end | |
4663 | && rel[1].r_info == ELF64_R_INFO (r_symndx, R_PPC64_DTPREL64) | |
4664 | && rel[1].r_offset == rel->r_offset + 8) | |
951fd09b | 4665 | tls_type = TLS_EXPLICIT | TLS_TLS | TLS_GD; |
411e1bfb | 4666 | else |
951fd09b | 4667 | tls_type = TLS_EXPLICIT | TLS_TLS | TLS_LD; |
411e1bfb AM |
4668 | goto dotlstoc; |
4669 | ||
4670 | case R_PPC64_DTPREL64: | |
4671 | tls_type = TLS_EXPLICIT | TLS_TLS | TLS_DTPREL; | |
4672 | if (rel != relocs | |
4673 | && rel[-1].r_info == ELF64_R_INFO (r_symndx, R_PPC64_DTPMOD64) | |
4674 | && rel[-1].r_offset == rel->r_offset - 8) | |
4675 | /* This is the second reloc of a dtpmod, dtprel pair. | |
4676 | Don't mark with TLS_DTPREL. */ | |
4677 | goto dodyn; | |
4678 | ||
4679 | dotlstoc: | |
4680 | sec->has_tls_reloc = 1; | |
4681 | if (h != NULL) | |
4682 | { | |
4683 | struct ppc_link_hash_entry *eh; | |
4684 | eh = (struct ppc_link_hash_entry *) h; | |
e7b938ca | 4685 | eh->tls_mask |= tls_type; |
411e1bfb AM |
4686 | } |
4687 | else | |
4688 | if (!update_local_sym_info (abfd, symtab_hdr, r_symndx, | |
4689 | rel->r_addend, tls_type)) | |
4690 | return FALSE; | |
4691 | ||
7c8fe5c4 AM |
4692 | ppc64_sec = ppc64_elf_section_data (sec); |
4693 | if (ppc64_sec->sec_type != sec_toc) | |
411e1bfb | 4694 | { |
e7b938ca | 4695 | /* One extra to simplify get_tls_mask. */ |
eea6121a | 4696 | bfd_size_type amt = sec->size * sizeof (unsigned) / 8 + 1; |
7c8fe5c4 AM |
4697 | ppc64_sec->u.t_symndx = bfd_zalloc (abfd, amt); |
4698 | if (ppc64_sec->u.t_symndx == NULL) | |
411e1bfb | 4699 | return FALSE; |
7c8fe5c4 AM |
4700 | BFD_ASSERT (ppc64_sec->sec_type == sec_normal); |
4701 | ppc64_sec->sec_type = sec_toc; | |
411e1bfb AM |
4702 | } |
4703 | BFD_ASSERT (rel->r_offset % 8 == 0); | |
7c8fe5c4 | 4704 | ppc64_sec->u.t_symndx[rel->r_offset / 8] = r_symndx; |
951fd09b AM |
4705 | |
4706 | /* Mark the second slot of a GD or LD entry. | |
4707 | -1 to indicate GD and -2 to indicate LD. */ | |
4708 | if (tls_type == (TLS_EXPLICIT | TLS_TLS | TLS_GD)) | |
7c8fe5c4 | 4709 | ppc64_sec->u.t_symndx[rel->r_offset / 8 + 1] = -1; |
951fd09b | 4710 | else if (tls_type == (TLS_EXPLICIT | TLS_TLS | TLS_LD)) |
7c8fe5c4 | 4711 | ppc64_sec->u.t_symndx[rel->r_offset / 8 + 1] = -2; |
411e1bfb AM |
4712 | goto dodyn; |
4713 | ||
4714 | case R_PPC64_TPREL16: | |
4715 | case R_PPC64_TPREL16_LO: | |
4716 | case R_PPC64_TPREL16_HI: | |
4717 | case R_PPC64_TPREL16_HA: | |
4718 | case R_PPC64_TPREL16_DS: | |
4719 | case R_PPC64_TPREL16_LO_DS: | |
4720 | case R_PPC64_TPREL16_HIGHER: | |
4721 | case R_PPC64_TPREL16_HIGHERA: | |
4722 | case R_PPC64_TPREL16_HIGHEST: | |
4723 | case R_PPC64_TPREL16_HIGHESTA: | |
4724 | if (info->shared) | |
4725 | { | |
4726 | info->flags |= DF_STATIC_TLS; | |
4727 | goto dodyn; | |
5d1634d7 AM |
4728 | } |
4729 | break; | |
4730 | ||
e86ce104 | 4731 | case R_PPC64_ADDR64: |
1e2f5b6e | 4732 | if (opd_sym_map != NULL |
1e2f5b6e | 4733 | && rel + 1 < rel_end |
4ce794b7 | 4734 | && ELF64_R_TYPE ((rel + 1)->r_info) == R_PPC64_TOC) |
1e2f5b6e | 4735 | { |
8387904d AM |
4736 | if (h != NULL) |
4737 | { | |
4738 | if (h->root.root.string[0] == '.' | |
4739 | && h->root.root.string[1] != 0 | |
4740 | && get_fdh ((struct ppc_link_hash_entry *) h, htab)) | |
4741 | ; | |
4742 | else | |
4743 | ((struct ppc_link_hash_entry *) h)->is_func = 1; | |
4744 | } | |
4745 | else | |
4746 | { | |
4747 | asection *s; | |
1e2f5b6e | 4748 | |
8387904d AM |
4749 | s = bfd_section_from_r_symndx (abfd, &htab->sym_sec, sec, |
4750 | r_symndx); | |
4751 | if (s == NULL) | |
4752 | return FALSE; | |
4753 | else if (s != sec) | |
3f764659 | 4754 | opd_sym_map[rel->r_offset / 8] = s; |
8387904d | 4755 | } |
1e2f5b6e | 4756 | } |
e86ce104 AM |
4757 | /* Fall through. */ |
4758 | ||
04c9666a | 4759 | case R_PPC64_REL30: |
5bd4f169 | 4760 | case R_PPC64_REL32: |
04c9666a | 4761 | case R_PPC64_REL64: |
65f38f15 AM |
4762 | case R_PPC64_ADDR14: |
4763 | case R_PPC64_ADDR14_BRNTAKEN: | |
4764 | case R_PPC64_ADDR14_BRTAKEN: | |
4765 | case R_PPC64_ADDR16: | |
4766 | case R_PPC64_ADDR16_DS: | |
4767 | case R_PPC64_ADDR16_HA: | |
4768 | case R_PPC64_ADDR16_HI: | |
4769 | case R_PPC64_ADDR16_HIGHER: | |
4770 | case R_PPC64_ADDR16_HIGHERA: | |
4771 | case R_PPC64_ADDR16_HIGHEST: | |
4772 | case R_PPC64_ADDR16_HIGHESTA: | |
4773 | case R_PPC64_ADDR16_LO: | |
4774 | case R_PPC64_ADDR16_LO_DS: | |
4775 | case R_PPC64_ADDR24: | |
65f38f15 | 4776 | case R_PPC64_ADDR32: |
65f38f15 AM |
4777 | case R_PPC64_UADDR16: |
4778 | case R_PPC64_UADDR32: | |
4779 | case R_PPC64_UADDR64: | |
5bd4f169 | 4780 | case R_PPC64_TOC: |
81848ca0 AM |
4781 | if (h != NULL && !info->shared) |
4782 | /* We may need a copy reloc. */ | |
f5385ebf | 4783 | h->non_got_ref = 1; |
81848ca0 | 4784 | |
41bd81ab | 4785 | /* Don't propagate .opd relocs. */ |
1e2f5b6e | 4786 | if (NO_OPD_RELOCS && opd_sym_map != NULL) |
e86ce104 | 4787 | break; |
e86ce104 | 4788 | |
65f38f15 AM |
4789 | /* If we are creating a shared library, and this is a reloc |
4790 | against a global symbol, or a non PC relative reloc | |
4791 | against a local symbol, then we need to copy the reloc | |
4792 | into the shared library. However, if we are linking with | |
4793 | -Bsymbolic, we do not need to copy a reloc against a | |
4794 | global symbol which is defined in an object we are | |
4795 | including in the link (i.e., DEF_REGULAR is set). At | |
4796 | this point we have not seen all the input files, so it is | |
4797 | possible that DEF_REGULAR is not set now but will be set | |
4798 | later (it is never cleared). In case of a weak definition, | |
4799 | DEF_REGULAR may be cleared later by a strong definition in | |
4800 | a shared library. We account for that possibility below by | |
f4656909 | 4801 | storing information in the dyn_relocs field of the hash |
65f38f15 AM |
4802 | table entry. A similar situation occurs when creating |
4803 | shared libraries and symbol visibility changes render the | |
4804 | symbol local. | |
4805 | ||
4806 | If on the other hand, we are creating an executable, we | |
4807 | may need to keep relocations for symbols satisfied by a | |
4808 | dynamic library if we manage to avoid copy relocs for the | |
4809 | symbol. */ | |
411e1bfb | 4810 | dodyn: |
65f38f15 | 4811 | if ((info->shared |
411e1bfb | 4812 | && (MUST_BE_DYN_RELOC (r_type) |
65f38f15 AM |
4813 | || (h != NULL |
4814 | && (! info->symbolic | |
4815 | || h->root.type == bfd_link_hash_defweak | |
f5385ebf | 4816 | || !h->def_regular)))) |
f4656909 AM |
4817 | || (ELIMINATE_COPY_RELOCS |
4818 | && !info->shared | |
65f38f15 AM |
4819 | && h != NULL |
4820 | && (h->root.type == bfd_link_hash_defweak | |
f5385ebf | 4821 | || !h->def_regular))) |
5bd4f169 | 4822 | { |
ec338859 AM |
4823 | struct ppc_dyn_relocs *p; |
4824 | struct ppc_dyn_relocs **head; | |
4825 | ||
65f38f15 AM |
4826 | /* We must copy these reloc types into the output file. |
4827 | Create a reloc section in dynobj and make room for | |
4828 | this reloc. */ | |
5bd4f169 AM |
4829 | if (sreloc == NULL) |
4830 | { | |
4831 | const char *name; | |
65f38f15 | 4832 | bfd *dynobj; |
5bd4f169 AM |
4833 | |
4834 | name = (bfd_elf_string_from_elf_section | |
4835 | (abfd, | |
4836 | elf_elfheader (abfd)->e_shstrndx, | |
4837 | elf_section_data (sec)->rel_hdr.sh_name)); | |
4838 | if (name == NULL) | |
b34976b6 | 4839 | return FALSE; |
5bd4f169 | 4840 | |
0112cd26 | 4841 | if (! CONST_STRNEQ (name, ".rela") |
65f38f15 AM |
4842 | || strcmp (bfd_get_section_name (abfd, sec), |
4843 | name + 5) != 0) | |
4844 | { | |
4845 | (*_bfd_error_handler) | |
d003868e AM |
4846 | (_("%B: bad relocation section name `%s\'"), |
4847 | abfd, name); | |
5d1634d7 | 4848 | bfd_set_error (bfd_error_bad_value); |
65f38f15 AM |
4849 | } |
4850 | ||
65f38f15 | 4851 | dynobj = htab->elf.dynobj; |
5bd4f169 AM |
4852 | sreloc = bfd_get_section_by_name (dynobj, name); |
4853 | if (sreloc == NULL) | |
4854 | { | |
4855 | flagword flags; | |
4856 | ||
5bd4f169 | 4857 | flags = (SEC_HAS_CONTENTS | SEC_READONLY |
77623a34 AM |
4858 | | SEC_IN_MEMORY | SEC_LINKER_CREATED |
4859 | | SEC_ALLOC | SEC_LOAD); | |
3496cb2a L |
4860 | sreloc = bfd_make_section_with_flags (dynobj, |
4861 | name, | |
4862 | flags); | |
5bd4f169 | 4863 | if (sreloc == NULL |
65f38f15 | 4864 | || ! bfd_set_section_alignment (dynobj, sreloc, 3)) |
b34976b6 | 4865 | return FALSE; |
5bd4f169 | 4866 | } |
65f38f15 | 4867 | elf_section_data (sec)->sreloc = sreloc; |
5bd4f169 AM |
4868 | } |
4869 | ||
65f38f15 AM |
4870 | /* If this is a global symbol, we count the number of |
4871 | relocations we need for this symbol. */ | |
4872 | if (h != NULL) | |
4873 | { | |
ec338859 | 4874 | head = &((struct ppc_link_hash_entry *) h)->dyn_relocs; |
65f38f15 AM |
4875 | } |
4876 | else | |
4877 | { | |
ec338859 AM |
4878 | /* Track dynamic relocs needed for local syms too. |
4879 | We really need local syms available to do this | |
4880 | easily. Oh well. */ | |
4881 | ||
4882 | asection *s; | |
6edfbbad DJ |
4883 | void *vpp; |
4884 | ||
ec338859 AM |
4885 | s = bfd_section_from_r_symndx (abfd, &htab->sym_sec, |
4886 | sec, r_symndx); | |
4887 | if (s == NULL) | |
b34976b6 | 4888 | return FALSE; |
ec338859 | 4889 | |
6edfbbad DJ |
4890 | vpp = &elf_section_data (s)->local_dynrel; |
4891 | head = (struct ppc_dyn_relocs **) vpp; | |
65f38f15 | 4892 | } |
ec338859 AM |
4893 | |
4894 | p = *head; | |
4895 | if (p == NULL || p->sec != sec) | |
4896 | { | |
4ce794b7 | 4897 | p = bfd_alloc (htab->elf.dynobj, sizeof *p); |
ec338859 | 4898 | if (p == NULL) |
b34976b6 | 4899 | return FALSE; |
ec338859 AM |
4900 | p->next = *head; |
4901 | *head = p; | |
4902 | p->sec = sec; | |
4903 | p->count = 0; | |
4904 | p->pc_count = 0; | |
4905 | } | |
4906 | ||
4907 | p->count += 1; | |
411e1bfb | 4908 | if (!MUST_BE_DYN_RELOC (r_type)) |
ec338859 | 4909 | p->pc_count += 1; |
65f38f15 | 4910 | } |
5bd4f169 | 4911 | break; |
65f38f15 AM |
4912 | |
4913 | default: | |
96e0dda4 | 4914 | break; |
5bd4f169 AM |
4915 | } |
4916 | } | |
4917 | ||
b34976b6 | 4918 | return TRUE; |
5bd4f169 AM |
4919 | } |
4920 | ||
8387904d AM |
4921 | /* OFFSET in OPD_SEC specifies a function descriptor. Return the address |
4922 | of the code entry point, and its section. */ | |
4923 | ||
4924 | static bfd_vma | |
4925 | opd_entry_value (asection *opd_sec, | |
4926 | bfd_vma offset, | |
4927 | asection **code_sec, | |
4928 | bfd_vma *code_off) | |
4929 | { | |
4930 | bfd *opd_bfd = opd_sec->owner; | |
8860955f | 4931 | Elf_Internal_Rela *relocs; |
8387904d | 4932 | Elf_Internal_Rela *lo, *hi, *look; |
645ea6a9 | 4933 | bfd_vma val; |
8387904d | 4934 | |
4b85d634 AM |
4935 | /* No relocs implies we are linking a --just-symbols object. */ |
4936 | if (opd_sec->reloc_count == 0) | |
4937 | { | |
4938 | bfd_vma val; | |
4939 | ||
4940 | if (!bfd_get_section_contents (opd_bfd, opd_sec, &val, offset, 8)) | |
4941 | return (bfd_vma) -1; | |
3b36f7e6 | 4942 | |
4b85d634 AM |
4943 | if (code_sec != NULL) |
4944 | { | |
4945 | asection *sec, *likely = NULL; | |
4946 | for (sec = opd_bfd->sections; sec != NULL; sec = sec->next) | |
4947 | if (sec->vma <= val | |
4948 | && (sec->flags & SEC_LOAD) != 0 | |
4949 | && (sec->flags & SEC_ALLOC) != 0) | |
4950 | likely = sec; | |
4951 | if (likely != NULL) | |
4952 | { | |
4953 | *code_sec = likely; | |
4954 | if (code_off != NULL) | |
4955 | *code_off = val - likely->vma; | |
4956 | } | |
4957 | } | |
4958 | return val; | |
4959 | } | |
4960 | ||
8860955f AM |
4961 | relocs = ppc64_elf_tdata (opd_bfd)->opd_relocs; |
4962 | if (relocs == NULL) | |
4963 | relocs = _bfd_elf_link_read_relocs (opd_bfd, opd_sec, NULL, NULL, TRUE); | |
645ea6a9 | 4964 | |
8387904d | 4965 | /* Go find the opd reloc at the sym address. */ |
8860955f | 4966 | lo = relocs; |
8387904d AM |
4967 | BFD_ASSERT (lo != NULL); |
4968 | hi = lo + opd_sec->reloc_count - 1; /* ignore last reloc */ | |
645ea6a9 | 4969 | val = (bfd_vma) -1; |
8387904d AM |
4970 | while (lo < hi) |
4971 | { | |
4972 | look = lo + (hi - lo) / 2; | |
4973 | if (look->r_offset < offset) | |
4974 | lo = look + 1; | |
4975 | else if (look->r_offset > offset) | |
4976 | hi = look; | |
4977 | else | |
4978 | { | |
4979 | Elf_Internal_Shdr *symtab_hdr = &elf_tdata (opd_bfd)->symtab_hdr; | |
4980 | if (ELF64_R_TYPE (look->r_info) == R_PPC64_ADDR64 | |
4981 | && ELF64_R_TYPE ((look + 1)->r_info) == R_PPC64_TOC) | |
4982 | { | |
4983 | unsigned long symndx = ELF64_R_SYM (look->r_info); | |
8387904d AM |
4984 | asection *sec; |
4985 | ||
4986 | if (symndx < symtab_hdr->sh_info) | |
4987 | { | |
4988 | Elf_Internal_Sym *sym; | |
4989 | ||
4990 | sym = (Elf_Internal_Sym *) symtab_hdr->contents; | |
4991 | if (sym == NULL) | |
4992 | { | |
4993 | sym = bfd_elf_get_elf_syms (opd_bfd, symtab_hdr, | |
4994 | symtab_hdr->sh_info, | |
4995 | 0, NULL, NULL, NULL); | |
4996 | if (sym == NULL) | |
645ea6a9 | 4997 | break; |
8387904d AM |
4998 | symtab_hdr->contents = (bfd_byte *) sym; |
4999 | } | |
5000 | ||
5001 | sym += symndx; | |
5002 | val = sym->st_value; | |
5003 | sec = NULL; | |
5004 | if ((sym->st_shndx != SHN_UNDEF | |
5005 | && sym->st_shndx < SHN_LORESERVE) | |
5006 | || sym->st_shndx > SHN_HIRESERVE) | |
5007 | sec = bfd_section_from_elf_index (opd_bfd, sym->st_shndx); | |
5008 | BFD_ASSERT ((sec->flags & SEC_MERGE) == 0); | |
5009 | } | |
5010 | else | |
5011 | { | |
5012 | struct elf_link_hash_entry **sym_hashes; | |
5013 | struct elf_link_hash_entry *rh; | |
5014 | ||
5015 | sym_hashes = elf_sym_hashes (opd_bfd); | |
5016 | rh = sym_hashes[symndx - symtab_hdr->sh_info]; | |
5017 | while (rh->root.type == bfd_link_hash_indirect | |
5018 | || rh->root.type == bfd_link_hash_warning) | |
5019 | rh = ((struct elf_link_hash_entry *) rh->root.u.i.link); | |
5020 | BFD_ASSERT (rh->root.type == bfd_link_hash_defined | |
5021 | || rh->root.type == bfd_link_hash_defweak); | |
5022 | val = rh->root.u.def.value; | |
5023 | sec = rh->root.u.def.section; | |
5024 | } | |
5025 | val += look->r_addend; | |
5026 | if (code_off != NULL) | |
5027 | *code_off = val; | |
5028 | if (code_sec != NULL) | |
5029 | *code_sec = sec; | |
5030 | if (sec != NULL && sec->output_section != NULL) | |
5031 | val += sec->output_section->vma + sec->output_offset; | |
8387904d AM |
5032 | } |
5033 | break; | |
5034 | } | |
5035 | } | |
645ea6a9 | 5036 | |
645ea6a9 | 5037 | return val; |
8387904d AM |
5038 | } |
5039 | ||
64d03ab5 AM |
5040 | /* Mark sections containing dynamically referenced symbols. When |
5041 | building shared libraries, we must assume that any visible symbol is | |
5042 | referenced. */ | |
5043 | ||
5044 | static bfd_boolean | |
5045 | ppc64_elf_gc_mark_dynamic_ref (struct elf_link_hash_entry *h, void *inf) | |
5046 | { | |
5047 | struct bfd_link_info *info = (struct bfd_link_info *) inf; | |
5048 | struct ppc_link_hash_entry *eh = (struct ppc_link_hash_entry *) h; | |
5049 | ||
5050 | if (eh->elf.root.type == bfd_link_hash_warning) | |
5051 | eh = (struct ppc_link_hash_entry *) eh->elf.root.u.i.link; | |
5052 | ||
5053 | /* Dynamic linking info is on the func descriptor sym. */ | |
5054 | if (eh->oh != NULL | |
5055 | && eh->oh->is_func_descriptor | |
5056 | && (eh->oh->elf.root.type == bfd_link_hash_defined | |
5057 | || eh->oh->elf.root.type == bfd_link_hash_defweak)) | |
5058 | eh = eh->oh; | |
5059 | ||
5060 | if ((eh->elf.root.type == bfd_link_hash_defined | |
5061 | || eh->elf.root.type == bfd_link_hash_defweak) | |
5062 | && (eh->elf.ref_dynamic | |
5063 | || (!info->executable | |
5064 | && eh->elf.def_regular | |
5065 | && ELF_ST_VISIBILITY (eh->elf.other) != STV_INTERNAL | |
5066 | && ELF_ST_VISIBILITY (eh->elf.other) != STV_HIDDEN))) | |
5067 | { | |
5068 | asection *code_sec; | |
5069 | ||
5070 | eh->elf.root.u.def.section->flags |= SEC_KEEP; | |
5071 | ||
5072 | /* Function descriptor syms cause the associated | |
5073 | function code sym section to be marked. */ | |
5074 | if (eh->is_func_descriptor | |
5075 | && (eh->oh->elf.root.type == bfd_link_hash_defined | |
5076 | || eh->oh->elf.root.type == bfd_link_hash_defweak)) | |
5077 | eh->oh->elf.root.u.def.section->flags |= SEC_KEEP; | |
5078 | else if (get_opd_info (eh->elf.root.u.def.section) != NULL | |
5079 | && opd_entry_value (eh->elf.root.u.def.section, | |
5080 | eh->elf.root.u.def.value, | |
5081 | &code_sec, NULL) != (bfd_vma) -1) | |
5082 | code_sec->flags |= SEC_KEEP; | |
5083 | } | |
5084 | ||
5085 | return TRUE; | |
5086 | } | |
5087 | ||
5bd4f169 AM |
5088 | /* Return the section that should be marked against GC for a given |
5089 | relocation. */ | |
5090 | ||
5091 | static asection * | |
4ce794b7 | 5092 | ppc64_elf_gc_mark_hook (asection *sec, |
ccfa59ea | 5093 | struct bfd_link_info *info, |
4ce794b7 AM |
5094 | Elf_Internal_Rela *rel, |
5095 | struct elf_link_hash_entry *h, | |
5096 | Elf_Internal_Sym *sym) | |
5bd4f169 | 5097 | { |
ccfa59ea AM |
5098 | asection *rsec; |
5099 | ||
5100 | /* First mark all our entry sym sections. */ | |
5101 | if (info->gc_sym_list != NULL) | |
5102 | { | |
5103 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
5104 | struct bfd_sym_chain *sym = info->gc_sym_list; | |
5105 | ||
5106 | info->gc_sym_list = NULL; | |
b56cbdb9 | 5107 | for (; sym != NULL; sym = sym->next) |
ccfa59ea AM |
5108 | { |
5109 | struct ppc_link_hash_entry *eh; | |
5110 | ||
5111 | eh = (struct ppc_link_hash_entry *) | |
5112 | elf_link_hash_lookup (&htab->elf, sym->name, FALSE, FALSE, FALSE); | |
5113 | if (eh == NULL) | |
5114 | continue; | |
5115 | if (eh->elf.root.type != bfd_link_hash_defined | |
5116 | && eh->elf.root.type != bfd_link_hash_defweak) | |
5117 | continue; | |
5118 | ||
c4f68ce3 AM |
5119 | if (eh->is_func_descriptor |
5120 | && (eh->oh->elf.root.type == bfd_link_hash_defined | |
5121 | || eh->oh->elf.root.type == bfd_link_hash_defweak)) | |
ccfa59ea | 5122 | rsec = eh->oh->elf.root.u.def.section; |
8387904d AM |
5123 | else if (get_opd_info (eh->elf.root.u.def.section) != NULL |
5124 | && opd_entry_value (eh->elf.root.u.def.section, | |
5125 | eh->elf.root.u.def.value, | |
5126 | &rsec, NULL) != (bfd_vma) -1) | |
5127 | ; | |
ccfa59ea AM |
5128 | else |
5129 | continue; | |
5130 | ||
5131 | if (!rsec->gc_mark) | |
5132 | _bfd_elf_gc_mark (info, rsec, ppc64_elf_gc_mark_hook); | |
5133 | ||
5134 | rsec = eh->elf.root.u.def.section; | |
5135 | if (!rsec->gc_mark) | |
5136 | _bfd_elf_gc_mark (info, rsec, ppc64_elf_gc_mark_hook); | |
ccfa59ea | 5137 | } |
ccfa59ea AM |
5138 | } |
5139 | ||
5140 | /* Syms return NULL if we're marking .opd, so we avoid marking all | |
5141 | function sections, as all functions are referenced in .opd. */ | |
5142 | rsec = NULL; | |
5143 | if (get_opd_info (sec) != NULL) | |
5144 | return rsec; | |
1e2f5b6e | 5145 | |
5bd4f169 AM |
5146 | if (h != NULL) |
5147 | { | |
04c9666a | 5148 | enum elf_ppc64_reloc_type r_type; |
ccfa59ea | 5149 | struct ppc_link_hash_entry *eh; |
a33d1f77 | 5150 | |
4ce794b7 | 5151 | r_type = ELF64_R_TYPE (rel->r_info); |
a33d1f77 | 5152 | switch (r_type) |
5bd4f169 AM |
5153 | { |
5154 | case R_PPC64_GNU_VTINHERIT: | |
5155 | case R_PPC64_GNU_VTENTRY: | |
5156 | break; | |
5157 | ||
5158 | default: | |
5159 | switch (h->root.type) | |
5160 | { | |
5161 | case bfd_link_hash_defined: | |
5162 | case bfd_link_hash_defweak: | |
ccfa59ea | 5163 | eh = (struct ppc_link_hash_entry *) h; |
c4f68ce3 AM |
5164 | if (eh->oh != NULL |
5165 | && eh->oh->is_func_descriptor | |
5166 | && (eh->oh->elf.root.type == bfd_link_hash_defined | |
5167 | || eh->oh->elf.root.type == bfd_link_hash_defweak)) | |
ccfa59ea | 5168 | eh = eh->oh; |
1e2f5b6e AM |
5169 | |
5170 | /* Function descriptor syms cause the associated | |
5171 | function code sym section to be marked. */ | |
c4f68ce3 AM |
5172 | if (eh->is_func_descriptor |
5173 | && (eh->oh->elf.root.type == bfd_link_hash_defined | |
5174 | || eh->oh->elf.root.type == bfd_link_hash_defweak)) | |
ccfa59ea AM |
5175 | { |
5176 | /* They also mark their opd section. */ | |
5177 | if (!eh->elf.root.u.def.section->gc_mark) | |
5178 | _bfd_elf_gc_mark (info, eh->elf.root.u.def.section, | |
5179 | ppc64_elf_gc_mark_hook); | |
5180 | ||
5181 | rsec = eh->oh->elf.root.u.def.section; | |
5182 | } | |
8387904d AM |
5183 | else if (get_opd_info (eh->elf.root.u.def.section) != NULL |
5184 | && opd_entry_value (eh->elf.root.u.def.section, | |
5185 | eh->elf.root.u.def.value, | |
5186 | &rsec, NULL) != (bfd_vma) -1) | |
5187 | { | |
5188 | if (!eh->elf.root.u.def.section->gc_mark) | |
5189 | _bfd_elf_gc_mark (info, eh->elf.root.u.def.section, | |
5190 | ppc64_elf_gc_mark_hook); | |
5191 | } | |
ccfa59ea | 5192 | else |
1e2f5b6e AM |
5193 | rsec = h->root.u.def.section; |
5194 | break; | |
5bd4f169 AM |
5195 | |
5196 | case bfd_link_hash_common: | |
1e2f5b6e AM |
5197 | rsec = h->root.u.c.p->section; |
5198 | break; | |
5bd4f169 AM |
5199 | |
5200 | default: | |
5201 | break; | |
5202 | } | |
5203 | } | |
5204 | } | |
5205 | else | |
5206 | { | |
1e2f5b6e AM |
5207 | asection **opd_sym_section; |
5208 | ||
5209 | rsec = bfd_section_from_elf_index (sec->owner, sym->st_shndx); | |
ccfa59ea | 5210 | opd_sym_section = get_opd_info (rsec); |
1e2f5b6e | 5211 | if (opd_sym_section != NULL) |
ccfa59ea AM |
5212 | { |
5213 | if (!rsec->gc_mark) | |
5214 | _bfd_elf_gc_mark (info, rsec, ppc64_elf_gc_mark_hook); | |
5215 | ||
b4f4e59f | 5216 | rsec = opd_sym_section[(sym->st_value + rel->r_addend) / 8]; |
ccfa59ea | 5217 | } |
5bd4f169 AM |
5218 | } |
5219 | ||
1e2f5b6e | 5220 | return rsec; |
5bd4f169 AM |
5221 | } |
5222 | ||
65f38f15 AM |
5223 | /* Update the .got, .plt. and dynamic reloc reference counts for the |
5224 | section being removed. */ | |
5bd4f169 | 5225 | |
b34976b6 | 5226 | static bfd_boolean |
4ce794b7 AM |
5227 | ppc64_elf_gc_sweep_hook (bfd *abfd, struct bfd_link_info *info, |
5228 | asection *sec, const Elf_Internal_Rela *relocs) | |
5bd4f169 | 5229 | { |
411e1bfb | 5230 | struct ppc_link_hash_table *htab; |
5bd4f169 AM |
5231 | Elf_Internal_Shdr *symtab_hdr; |
5232 | struct elf_link_hash_entry **sym_hashes; | |
411e1bfb | 5233 | struct got_entry **local_got_ents; |
5bd4f169 | 5234 | const Elf_Internal_Rela *rel, *relend; |
5bd4f169 | 5235 | |
680a3378 AM |
5236 | if ((sec->flags & SEC_ALLOC) == 0) |
5237 | return TRUE; | |
5238 | ||
ec338859 AM |
5239 | elf_section_data (sec)->local_dynrel = NULL; |
5240 | ||
411e1bfb | 5241 | htab = ppc_hash_table (info); |
5bd4f169 AM |
5242 | symtab_hdr = &elf_tdata (abfd)->symtab_hdr; |
5243 | sym_hashes = elf_sym_hashes (abfd); | |
411e1bfb | 5244 | local_got_ents = elf_local_got_ents (abfd); |
5bd4f169 AM |
5245 | |
5246 | relend = relocs + sec->reloc_count; | |
5247 | for (rel = relocs; rel < relend; rel++) | |
a33d1f77 AM |
5248 | { |
5249 | unsigned long r_symndx; | |
04c9666a | 5250 | enum elf_ppc64_reloc_type r_type; |
58ac9f71 | 5251 | struct elf_link_hash_entry *h = NULL; |
411e1bfb | 5252 | char tls_type = 0; |
5bd4f169 | 5253 | |
a33d1f77 | 5254 | r_symndx = ELF64_R_SYM (rel->r_info); |
4ce794b7 | 5255 | r_type = ELF64_R_TYPE (rel->r_info); |
58ac9f71 AM |
5256 | if (r_symndx >= symtab_hdr->sh_info) |
5257 | { | |
5258 | struct ppc_link_hash_entry *eh; | |
5259 | struct ppc_dyn_relocs **pp; | |
5260 | struct ppc_dyn_relocs *p; | |
5261 | ||
5262 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; | |
3eb128b2 AM |
5263 | while (h->root.type == bfd_link_hash_indirect |
5264 | || h->root.type == bfd_link_hash_warning) | |
5265 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
58ac9f71 AM |
5266 | eh = (struct ppc_link_hash_entry *) h; |
5267 | ||
5268 | for (pp = &eh->dyn_relocs; (p = *pp) != NULL; pp = &p->next) | |
5269 | if (p->sec == sec) | |
5270 | { | |
5271 | /* Everything must go for SEC. */ | |
5272 | *pp = p->next; | |
5273 | break; | |
5274 | } | |
5275 | } | |
5276 | ||
a33d1f77 AM |
5277 | switch (r_type) |
5278 | { | |
411e1bfb AM |
5279 | case R_PPC64_GOT_TLSLD16: |
5280 | case R_PPC64_GOT_TLSLD16_LO: | |
5281 | case R_PPC64_GOT_TLSLD16_HI: | |
5282 | case R_PPC64_GOT_TLSLD16_HA: | |
e717da7e | 5283 | ppc64_tlsld_got (abfd)->refcount -= 1; |
951fd09b | 5284 | tls_type = TLS_TLS | TLS_LD; |
411e1bfb AM |
5285 | goto dogot; |
5286 | ||
5287 | case R_PPC64_GOT_TLSGD16: | |
5288 | case R_PPC64_GOT_TLSGD16_LO: | |
5289 | case R_PPC64_GOT_TLSGD16_HI: | |
5290 | case R_PPC64_GOT_TLSGD16_HA: | |
951fd09b | 5291 | tls_type = TLS_TLS | TLS_GD; |
411e1bfb AM |
5292 | goto dogot; |
5293 | ||
5294 | case R_PPC64_GOT_TPREL16_DS: | |
5295 | case R_PPC64_GOT_TPREL16_LO_DS: | |
5296 | case R_PPC64_GOT_TPREL16_HI: | |
5297 | case R_PPC64_GOT_TPREL16_HA: | |
5298 | tls_type = TLS_TLS | TLS_TPREL; | |
5299 | goto dogot; | |
5300 | ||
5301 | case R_PPC64_GOT_DTPREL16_DS: | |
5302 | case R_PPC64_GOT_DTPREL16_LO_DS: | |
5303 | case R_PPC64_GOT_DTPREL16_HI: | |
5304 | case R_PPC64_GOT_DTPREL16_HA: | |
5305 | tls_type = TLS_TLS | TLS_DTPREL; | |
5306 | goto dogot; | |
5307 | ||
a33d1f77 AM |
5308 | case R_PPC64_GOT16: |
5309 | case R_PPC64_GOT16_DS: | |
5310 | case R_PPC64_GOT16_HA: | |
5311 | case R_PPC64_GOT16_HI: | |
5312 | case R_PPC64_GOT16_LO: | |
5313 | case R_PPC64_GOT16_LO_DS: | |
411e1bfb AM |
5314 | dogot: |
5315 | { | |
5316 | struct got_entry *ent; | |
5317 | ||
58ac9f71 AM |
5318 | if (h != NULL) |
5319 | ent = h->got.glist; | |
411e1bfb AM |
5320 | else |
5321 | ent = local_got_ents[r_symndx]; | |
5322 | ||
5323 | for (; ent != NULL; ent = ent->next) | |
5324 | if (ent->addend == rel->r_addend | |
e717da7e | 5325 | && ent->owner == abfd |
411e1bfb AM |
5326 | && ent->tls_type == tls_type) |
5327 | break; | |
5328 | if (ent == NULL) | |
5329 | abort (); | |
5330 | if (ent->got.refcount > 0) | |
5331 | ent->got.refcount -= 1; | |
5332 | } | |
a33d1f77 | 5333 | break; |
65f38f15 | 5334 | |
a33d1f77 AM |
5335 | case R_PPC64_PLT16_HA: |
5336 | case R_PPC64_PLT16_HI: | |
5337 | case R_PPC64_PLT16_LO: | |
5338 | case R_PPC64_PLT32: | |
5339 | case R_PPC64_PLT64: | |
721956f4 AM |
5340 | case R_PPC64_REL14: |
5341 | case R_PPC64_REL14_BRNTAKEN: | |
5342 | case R_PPC64_REL14_BRTAKEN: | |
5d1634d7 | 5343 | case R_PPC64_REL24: |
58ac9f71 | 5344 | if (h != NULL) |
5d1634d7 | 5345 | { |
411e1bfb AM |
5346 | struct plt_entry *ent; |
5347 | ||
411e1bfb AM |
5348 | for (ent = h->plt.plist; ent != NULL; ent = ent->next) |
5349 | if (ent->addend == rel->r_addend) | |
5350 | break; | |
5351 | if (ent == NULL) | |
5352 | abort (); | |
5353 | if (ent->plt.refcount > 0) | |
5354 | ent->plt.refcount -= 1; | |
5d1634d7 | 5355 | } |
e86ce104 | 5356 | break; |
5d1634d7 | 5357 | |
a33d1f77 AM |
5358 | default: |
5359 | break; | |
5360 | } | |
5361 | } | |
b34976b6 | 5362 | return TRUE; |
5bd4f169 AM |
5363 | } |
5364 | ||
deb0e272 AM |
5365 | /* The maximum size of .sfpr. */ |
5366 | #define SFPR_MAX (218*4) | |
5367 | ||
5368 | struct sfpr_def_parms | |
5369 | { | |
699733f6 AM |
5370 | const char name[12]; |
5371 | unsigned char lo, hi; | |
deb0e272 AM |
5372 | bfd_byte * (*write_ent) (bfd *, bfd_byte *, int); |
5373 | bfd_byte * (*write_tail) (bfd *, bfd_byte *, int); | |
5374 | }; | |
5375 | ||
5376 | /* Auto-generate _save*, _rest* functions in .sfpr. */ | |
5377 | ||
5378 | static unsigned int | |
5379 | sfpr_define (struct bfd_link_info *info, const struct sfpr_def_parms *parm) | |
5380 | { | |
5381 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
5382 | unsigned int i; | |
5383 | size_t len = strlen (parm->name); | |
5384 | bfd_boolean writing = FALSE; | |
699733f6 | 5385 | char sym[16]; |
deb0e272 AM |
5386 | |
5387 | memcpy (sym, parm->name, len); | |
5388 | sym[len + 2] = 0; | |
5389 | ||
5390 | for (i = parm->lo; i <= parm->hi; i++) | |
5391 | { | |
5392 | struct elf_link_hash_entry *h; | |
5393 | ||
5394 | sym[len + 0] = i / 10 + '0'; | |
5395 | sym[len + 1] = i % 10 + '0'; | |
5396 | h = elf_link_hash_lookup (&htab->elf, sym, FALSE, FALSE, TRUE); | |
5397 | if (h != NULL | |
f5385ebf | 5398 | && !h->def_regular) |
deb0e272 AM |
5399 | { |
5400 | h->root.type = bfd_link_hash_defined; | |
5401 | h->root.u.def.section = htab->sfpr; | |
5402 | h->root.u.def.value = htab->sfpr->size; | |
5403 | h->type = STT_FUNC; | |
f5385ebf | 5404 | h->def_regular = 1; |
deb0e272 AM |
5405 | _bfd_elf_link_hash_hide_symbol (info, h, TRUE); |
5406 | writing = TRUE; | |
5407 | if (htab->sfpr->contents == NULL) | |
5408 | { | |
5409 | htab->sfpr->contents = bfd_alloc (htab->elf.dynobj, SFPR_MAX); | |
5410 | if (htab->sfpr->contents == NULL) | |
5411 | return FALSE; | |
5412 | } | |
5413 | } | |
5414 | if (writing) | |
5415 | { | |
5416 | bfd_byte *p = htab->sfpr->contents + htab->sfpr->size; | |
5417 | if (i != parm->hi) | |
5418 | p = (*parm->write_ent) (htab->elf.dynobj, p, i); | |
5419 | else | |
5420 | p = (*parm->write_tail) (htab->elf.dynobj, p, i); | |
5421 | htab->sfpr->size = p - htab->sfpr->contents; | |
5422 | } | |
5423 | } | |
5424 | ||
5425 | return TRUE; | |
5426 | } | |
5427 | ||
5428 | static bfd_byte * | |
5429 | savegpr0 (bfd *abfd, bfd_byte *p, int r) | |
5430 | { | |
5431 | bfd_put_32 (abfd, STD_R0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p); | |
5432 | return p + 4; | |
5433 | } | |
5434 | ||
5435 | static bfd_byte * | |
5436 | savegpr0_tail (bfd *abfd, bfd_byte *p, int r) | |
5437 | { | |
5438 | p = savegpr0 (abfd, p, r); | |
5439 | bfd_put_32 (abfd, STD_R0_0R1 + 16, p); | |
5440 | p = p + 4; | |
5441 | bfd_put_32 (abfd, BLR, p); | |
5442 | return p + 4; | |
5443 | } | |
5444 | ||
5445 | static bfd_byte * | |
5446 | restgpr0 (bfd *abfd, bfd_byte *p, int r) | |
5447 | { | |
5448 | bfd_put_32 (abfd, LD_R0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p); | |
5449 | return p + 4; | |
5450 | } | |
5451 | ||
5452 | static bfd_byte * | |
5453 | restgpr0_tail (bfd *abfd, bfd_byte *p, int r) | |
5454 | { | |
5455 | bfd_put_32 (abfd, LD_R0_0R1 + 16, p); | |
5456 | p = p + 4; | |
5457 | p = restgpr0 (abfd, p, r); | |
5458 | bfd_put_32 (abfd, MTLR_R0, p); | |
5459 | p = p + 4; | |
5460 | if (r == 29) | |
5461 | { | |
5462 | p = restgpr0 (abfd, p, 30); | |
5463 | p = restgpr0 (abfd, p, 31); | |
5464 | } | |
5465 | bfd_put_32 (abfd, BLR, p); | |
5466 | return p + 4; | |
5467 | } | |
5468 | ||
5469 | static bfd_byte * | |
5470 | savegpr1 (bfd *abfd, bfd_byte *p, int r) | |
5471 | { | |
5472 | bfd_put_32 (abfd, STD_R0_0R12 + (r << 21) + (1 << 16) - (32 - r) * 8, p); | |
5473 | return p + 4; | |
5474 | } | |
5475 | ||
5476 | static bfd_byte * | |
5477 | savegpr1_tail (bfd *abfd, bfd_byte *p, int r) | |
5478 | { | |
5479 | p = savegpr1 (abfd, p, r); | |
5480 | bfd_put_32 (abfd, BLR, p); | |
5481 | return p + 4; | |
5482 | } | |
5483 | ||
5484 | static bfd_byte * | |
5485 | restgpr1 (bfd *abfd, bfd_byte *p, int r) | |
5486 | { | |
5487 | bfd_put_32 (abfd, LD_R0_0R12 + (r << 21) + (1 << 16) - (32 - r) * 8, p); | |
5488 | return p + 4; | |
5489 | } | |
5490 | ||
5491 | static bfd_byte * | |
5492 | restgpr1_tail (bfd *abfd, bfd_byte *p, int r) | |
5493 | { | |
5494 | p = restgpr1 (abfd, p, r); | |
5495 | bfd_put_32 (abfd, BLR, p); | |
5496 | return p + 4; | |
5497 | } | |
5498 | ||
5499 | static bfd_byte * | |
5500 | savefpr (bfd *abfd, bfd_byte *p, int r) | |
5501 | { | |
5502 | bfd_put_32 (abfd, STFD_FR0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p); | |
5503 | return p + 4; | |
5504 | } | |
5505 | ||
5506 | static bfd_byte * | |
5507 | savefpr0_tail (bfd *abfd, bfd_byte *p, int r) | |
5508 | { | |
5509 | p = savefpr (abfd, p, r); | |
5510 | bfd_put_32 (abfd, STD_R0_0R1 + 16, p); | |
5511 | p = p + 4; | |
5512 | bfd_put_32 (abfd, BLR, p); | |
5513 | return p + 4; | |
5514 | } | |
5515 | ||
5516 | static bfd_byte * | |
5517 | restfpr (bfd *abfd, bfd_byte *p, int r) | |
5518 | { | |
5519 | bfd_put_32 (abfd, LFD_FR0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p); | |
5520 | return p + 4; | |
5521 | } | |
5522 | ||
5523 | static bfd_byte * | |
5524 | restfpr0_tail (bfd *abfd, bfd_byte *p, int r) | |
5525 | { | |
5526 | bfd_put_32 (abfd, LD_R0_0R1 + 16, p); | |
5527 | p = p + 4; | |
5528 | p = restfpr (abfd, p, r); | |
5529 | bfd_put_32 (abfd, MTLR_R0, p); | |
5530 | p = p + 4; | |
5531 | if (r == 29) | |
5532 | { | |
5533 | p = restfpr (abfd, p, 30); | |
5534 | p = restfpr (abfd, p, 31); | |
5535 | } | |
5536 | bfd_put_32 (abfd, BLR, p); | |
5537 | return p + 4; | |
5538 | } | |
5539 | ||
5540 | static bfd_byte * | |
5541 | savefpr1_tail (bfd *abfd, bfd_byte *p, int r) | |
5542 | { | |
5543 | p = savefpr (abfd, p, r); | |
5544 | bfd_put_32 (abfd, BLR, p); | |
5545 | return p + 4; | |
5546 | } | |
5547 | ||
5548 | static bfd_byte * | |
5549 | restfpr1_tail (bfd *abfd, bfd_byte *p, int r) | |
5550 | { | |
5551 | p = restfpr (abfd, p, r); | |
5552 | bfd_put_32 (abfd, BLR, p); | |
5553 | return p + 4; | |
5554 | } | |
5555 | ||
5556 | static bfd_byte * | |
5557 | savevr (bfd *abfd, bfd_byte *p, int r) | |
5558 | { | |
5559 | bfd_put_32 (abfd, LI_R12_0 + (1 << 16) - (32 - r) * 16, p); | |
5560 | p = p + 4; | |
5561 | bfd_put_32 (abfd, STVX_VR0_R12_R0 + (r << 21), p); | |
5562 | return p + 4; | |
5563 | } | |
5564 | ||
5565 | static bfd_byte * | |
5566 | savevr_tail (bfd *abfd, bfd_byte *p, int r) | |
5567 | { | |
5568 | p = savevr (abfd, p, r); | |
5569 | bfd_put_32 (abfd, BLR, p); | |
5570 | return p + 4; | |
5571 | } | |
5572 | ||
5573 | static bfd_byte * | |
5574 | restvr (bfd *abfd, bfd_byte *p, int r) | |
5575 | { | |
5576 | bfd_put_32 (abfd, LI_R12_0 + (1 << 16) - (32 - r) * 16, p); | |
5577 | p = p + 4; | |
5578 | bfd_put_32 (abfd, LVX_VR0_R12_R0 + (r << 21), p); | |
5579 | return p + 4; | |
5580 | } | |
5581 | ||
5582 | static bfd_byte * | |
5583 | restvr_tail (bfd *abfd, bfd_byte *p, int r) | |
5584 | { | |
5585 | p = restvr (abfd, p, r); | |
5586 | bfd_put_32 (abfd, BLR, p); | |
5587 | return p + 4; | |
5588 | } | |
5589 | ||
e86ce104 AM |
5590 | /* Called via elf_link_hash_traverse to transfer dynamic linking |
5591 | information on function code symbol entries to their corresponding | |
5592 | function descriptor symbol entries. */ | |
deb0e272 | 5593 | |
b34976b6 | 5594 | static bfd_boolean |
4ce794b7 | 5595 | func_desc_adjust (struct elf_link_hash_entry *h, void *inf) |
5bd4f169 | 5596 | { |
e86ce104 | 5597 | struct bfd_link_info *info; |
65f38f15 | 5598 | struct ppc_link_hash_table *htab; |
411e1bfb | 5599 | struct plt_entry *ent; |
50bc7936 AM |
5600 | struct ppc_link_hash_entry *fh; |
5601 | struct ppc_link_hash_entry *fdh; | |
5602 | bfd_boolean force_local; | |
5bd4f169 | 5603 | |
50bc7936 AM |
5604 | fh = (struct ppc_link_hash_entry *) h; |
5605 | if (fh->elf.root.type == bfd_link_hash_indirect) | |
b34976b6 | 5606 | return TRUE; |
e86ce104 | 5607 | |
50bc7936 AM |
5608 | if (fh->elf.root.type == bfd_link_hash_warning) |
5609 | fh = (struct ppc_link_hash_entry *) fh->elf.root.u.i.link; | |
e92d460e | 5610 | |
4ce794b7 | 5611 | info = inf; |
65f38f15 | 5612 | htab = ppc_hash_table (info); |
5bd4f169 | 5613 | |
c09bdfe5 AM |
5614 | /* Resolve undefined references to dot-symbols as the value |
5615 | in the function descriptor, if we have one in a regular object. | |
5616 | This is to satisfy cases like ".quad .foo". Calls to functions | |
5617 | in dynamic objects are handled elsewhere. */ | |
5618 | if (fh->elf.root.type == bfd_link_hash_undefweak | |
5619 | && fh->was_undefined | |
5620 | && (fh->oh->elf.root.type == bfd_link_hash_defined | |
5621 | || fh->oh->elf.root.type == bfd_link_hash_defweak) | |
5622 | && get_opd_info (fh->oh->elf.root.u.def.section) != NULL | |
5623 | && opd_entry_value (fh->oh->elf.root.u.def.section, | |
5624 | fh->oh->elf.root.u.def.value, | |
5625 | &fh->elf.root.u.def.section, | |
5626 | &fh->elf.root.u.def.value) != (bfd_vma) -1) | |
5627 | { | |
5628 | fh->elf.root.type = fh->oh->elf.root.type; | |
f5385ebf | 5629 | fh->elf.forced_local = 1; |
c09bdfe5 AM |
5630 | } |
5631 | ||
e86ce104 AM |
5632 | /* If this is a function code symbol, transfer dynamic linking |
5633 | information to the function descriptor symbol. */ | |
50bc7936 | 5634 | if (!fh->is_func) |
b34976b6 | 5635 | return TRUE; |
e86ce104 | 5636 | |
50bc7936 | 5637 | for (ent = fh->elf.plt.plist; ent != NULL; ent = ent->next) |
411e1bfb AM |
5638 | if (ent->plt.refcount > 0) |
5639 | break; | |
50bc7936 AM |
5640 | if (ent == NULL |
5641 | || fh->elf.root.root.string[0] != '.' | |
5642 | || fh->elf.root.root.string[1] == '\0') | |
5643 | return TRUE; | |
5bd4f169 | 5644 | |
50bc7936 AM |
5645 | /* Find the corresponding function descriptor symbol. Create it |
5646 | as undefined if necessary. */ | |
5bd4f169 | 5647 | |
50bc7936 AM |
5648 | fdh = get_fdh (fh, htab); |
5649 | if (fdh != NULL) | |
5650 | while (fdh->elf.root.type == bfd_link_hash_indirect | |
5651 | || fdh->elf.root.type == bfd_link_hash_warning) | |
5652 | fdh = (struct ppc_link_hash_entry *) fdh->elf.root.u.i.link; | |
5bd4f169 | 5653 | |
50bc7936 AM |
5654 | if (fdh == NULL |
5655 | && info->shared | |
5656 | && (fh->elf.root.type == bfd_link_hash_undefined | |
5657 | || fh->elf.root.type == bfd_link_hash_undefweak)) | |
5658 | { | |
908b32fc | 5659 | fdh = make_fdh (info, fh); |
bb700d78 AM |
5660 | if (fdh == NULL) |
5661 | return FALSE; | |
50bc7936 | 5662 | } |
648cca2c | 5663 | |
908b32fc | 5664 | /* Fake function descriptors are made undefweak. If the function |
433817dd AM |
5665 | code symbol is strong undefined, make the fake sym the same. |
5666 | If the function code symbol is defined, then force the fake | |
5667 | descriptor local; We can't support overriding of symbols in a | |
5668 | shared library on a fake descriptor. */ | |
908b32fc AM |
5669 | |
5670 | if (fdh != NULL | |
5671 | && fdh->fake | |
433817dd | 5672 | && fdh->elf.root.type == bfd_link_hash_undefweak) |
908b32fc | 5673 | { |
433817dd AM |
5674 | if (fh->elf.root.type == bfd_link_hash_undefined) |
5675 | { | |
5676 | fdh->elf.root.type = bfd_link_hash_undefined; | |
5677 | bfd_link_add_undef (&htab->elf.root, &fdh->elf.root); | |
5678 | } | |
5679 | else if (fh->elf.root.type == bfd_link_hash_defined | |
5680 | || fh->elf.root.type == bfd_link_hash_defweak) | |
5681 | { | |
5682 | _bfd_elf_link_hash_hide_symbol (info, &fdh->elf, TRUE); | |
5683 | } | |
908b32fc AM |
5684 | } |
5685 | ||
50bc7936 | 5686 | if (fdh != NULL |
f5385ebf | 5687 | && !fdh->elf.forced_local |
50bc7936 | 5688 | && (info->shared |
f5385ebf AM |
5689 | || fdh->elf.def_dynamic |
5690 | || fdh->elf.ref_dynamic | |
50bc7936 AM |
5691 | || (fdh->elf.root.type == bfd_link_hash_undefweak |
5692 | && ELF_ST_VISIBILITY (fdh->elf.other) == STV_DEFAULT))) | |
5693 | { | |
5694 | if (fdh->elf.dynindx == -1) | |
c152c796 | 5695 | if (! bfd_elf_link_record_dynamic_symbol (info, &fdh->elf)) |
50bc7936 | 5696 | return FALSE; |
f5385ebf AM |
5697 | fdh->elf.ref_regular |= fh->elf.ref_regular; |
5698 | fdh->elf.ref_dynamic |= fh->elf.ref_dynamic; | |
5699 | fdh->elf.ref_regular_nonweak |= fh->elf.ref_regular_nonweak; | |
5700 | fdh->elf.non_got_ref |= fh->elf.non_got_ref; | |
50bc7936 | 5701 | if (ELF_ST_VISIBILITY (fh->elf.other) == STV_DEFAULT) |
e86ce104 | 5702 | { |
40d16e0b | 5703 | move_plt_plist (fh, fdh); |
f5385ebf | 5704 | fdh->elf.needs_plt = 1; |
e86ce104 | 5705 | } |
50bc7936 | 5706 | fdh->is_func_descriptor = 1; |
34814b9f AM |
5707 | fdh->oh = fh; |
5708 | fh->oh = fdh; | |
e86ce104 AM |
5709 | } |
5710 | ||
50bc7936 AM |
5711 | /* Now that the info is on the function descriptor, clear the |
5712 | function code sym info. Any function code syms for which we | |
5713 | don't have a definition in a regular file, we force local. | |
5714 | This prevents a shared library from exporting syms that have | |
5715 | been imported from another library. Function code syms that | |
5716 | are really in the library we must leave global to prevent the | |
5717 | linker dragging in a definition from a static library. */ | |
93f3fa99 AM |
5718 | force_local = (!fh->elf.def_regular |
5719 | || fdh == NULL | |
5720 | || !fdh->elf.def_regular | |
5721 | || fdh->elf.forced_local); | |
50bc7936 AM |
5722 | _bfd_elf_link_hash_hide_symbol (info, &fh->elf, force_local); |
5723 | ||
b34976b6 | 5724 | return TRUE; |
e86ce104 | 5725 | } |
40b8271b | 5726 | |
e86ce104 | 5727 | /* Called near the start of bfd_elf_size_dynamic_sections. We use |
82bd7b59 AM |
5728 | this hook to a) provide some gcc support functions, and b) transfer |
5729 | dynamic linking information gathered so far on function code symbol | |
5730 | entries, to their corresponding function descriptor symbol entries. */ | |
deb0e272 | 5731 | |
b34976b6 | 5732 | static bfd_boolean |
4ce794b7 AM |
5733 | ppc64_elf_func_desc_adjust (bfd *obfd ATTRIBUTE_UNUSED, |
5734 | struct bfd_link_info *info) | |
e86ce104 AM |
5735 | { |
5736 | struct ppc_link_hash_table *htab; | |
82bd7b59 | 5737 | unsigned int i; |
deb0e272 AM |
5738 | const struct sfpr_def_parms funcs[] = |
5739 | { | |
5740 | { "_savegpr0_", 14, 31, savegpr0, savegpr0_tail }, | |
5741 | { "_restgpr0_", 14, 29, restgpr0, restgpr0_tail }, | |
5742 | { "_restgpr0_", 30, 31, restgpr0, restgpr0_tail }, | |
5743 | { "_savegpr1_", 14, 31, savegpr1, savegpr1_tail }, | |
5744 | { "_restgpr1_", 14, 31, restgpr1, restgpr1_tail }, | |
5745 | { "_savefpr_", 14, 31, savefpr, savefpr0_tail }, | |
5746 | { "_restfpr_", 14, 29, restfpr, restfpr0_tail }, | |
5747 | { "_restfpr_", 30, 31, restfpr, restfpr0_tail }, | |
5748 | { "._savef", 14, 31, savefpr, savefpr1_tail }, | |
5749 | { "._restf", 14, 31, restfpr, restfpr1_tail }, | |
5750 | { "_savevr_", 20, 31, savevr, savevr_tail }, | |
5751 | { "_restvr_", 20, 31, restvr, restvr_tail } | |
5752 | }; | |
e86ce104 AM |
5753 | |
5754 | htab = ppc_hash_table (info); | |
82bd7b59 AM |
5755 | if (htab->sfpr == NULL) |
5756 | /* We don't have any relocs. */ | |
b34976b6 | 5757 | return TRUE; |
82bd7b59 | 5758 | |
deb0e272 AM |
5759 | /* Provide any missing _save* and _rest* functions. */ |
5760 | htab->sfpr->size = 0; | |
5761 | for (i = 0; i < sizeof (funcs) / sizeof (funcs[0]); i++) | |
5762 | if (!sfpr_define (info, &funcs[i])) | |
5763 | return FALSE; | |
82bd7b59 | 5764 | |
4ce794b7 | 5765 | elf_link_hash_traverse (&htab->elf, func_desc_adjust, info); |
805fc799 | 5766 | |
eea6121a | 5767 | if (htab->sfpr->size == 0) |
8423293d | 5768 | htab->sfpr->flags |= SEC_EXCLUDE; |
82bd7b59 | 5769 | |
b34976b6 | 5770 | return TRUE; |
e86ce104 AM |
5771 | } |
5772 | ||
5773 | /* Adjust a symbol defined by a dynamic object and referenced by a | |
5774 | regular object. The current definition is in some section of the | |
5775 | dynamic object, but we're not including those sections. We have to | |
5776 | change the definition to something the rest of the link can | |
5777 | understand. */ | |
5778 | ||
b34976b6 | 5779 | static bfd_boolean |
4ce794b7 AM |
5780 | ppc64_elf_adjust_dynamic_symbol (struct bfd_link_info *info, |
5781 | struct elf_link_hash_entry *h) | |
e86ce104 AM |
5782 | { |
5783 | struct ppc_link_hash_table *htab; | |
e86ce104 AM |
5784 | asection *s; |
5785 | unsigned int power_of_two; | |
5786 | ||
5787 | htab = ppc_hash_table (info); | |
5788 | ||
5789 | /* Deal with function syms. */ | |
5790 | if (h->type == STT_FUNC | |
f5385ebf | 5791 | || h->needs_plt) |
e86ce104 AM |
5792 | { |
5793 | /* Clear procedure linkage table information for any symbol that | |
5794 | won't need a .plt entry. */ | |
411e1bfb AM |
5795 | struct plt_entry *ent; |
5796 | for (ent = h->plt.plist; ent != NULL; ent = ent->next) | |
5797 | if (ent->plt.refcount > 0) | |
5798 | break; | |
8387904d | 5799 | if (ent == NULL |
9c7a29a3 AM |
5800 | || SYMBOL_CALLS_LOCAL (info, h) |
5801 | || (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT | |
5802 | && h->root.type == bfd_link_hash_undefweak)) | |
40b8271b | 5803 | { |
411e1bfb | 5804 | h->plt.plist = NULL; |
f5385ebf | 5805 | h->needs_plt = 0; |
40b8271b | 5806 | } |
5bd4f169 | 5807 | } |
bbd7ec4a | 5808 | else |
411e1bfb | 5809 | h->plt.plist = NULL; |
5bd4f169 AM |
5810 | |
5811 | /* If this is a weak symbol, and there is a real definition, the | |
5812 | processor independent code will have arranged for us to see the | |
5813 | real definition first, and we can just use the same value. */ | |
f6e332e6 | 5814 | if (h->u.weakdef != NULL) |
5bd4f169 | 5815 | { |
f6e332e6 AM |
5816 | BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined |
5817 | || h->u.weakdef->root.type == bfd_link_hash_defweak); | |
5818 | h->root.u.def.section = h->u.weakdef->root.u.def.section; | |
5819 | h->root.u.def.value = h->u.weakdef->root.u.def.value; | |
a23b6845 | 5820 | if (ELIMINATE_COPY_RELOCS) |
f6e332e6 | 5821 | h->non_got_ref = h->u.weakdef->non_got_ref; |
b34976b6 | 5822 | return TRUE; |
5bd4f169 AM |
5823 | } |
5824 | ||
5bd4f169 AM |
5825 | /* If we are creating a shared library, we must presume that the |
5826 | only references to the symbol are via the global offset table. | |
5827 | For such cases we need not do anything here; the relocations will | |
5828 | be handled correctly by relocate_section. */ | |
5829 | if (info->shared) | |
b34976b6 | 5830 | return TRUE; |
5bd4f169 | 5831 | |
65f38f15 AM |
5832 | /* If there are no references to this symbol that do not use the |
5833 | GOT, we don't need to generate a copy reloc. */ | |
f5385ebf | 5834 | if (!h->non_got_ref) |
b34976b6 | 5835 | return TRUE; |
65f38f15 | 5836 | |
f4656909 | 5837 | if (ELIMINATE_COPY_RELOCS) |
65f38f15 | 5838 | { |
f4656909 AM |
5839 | struct ppc_link_hash_entry * eh; |
5840 | struct ppc_dyn_relocs *p; | |
65f38f15 | 5841 | |
f4656909 AM |
5842 | eh = (struct ppc_link_hash_entry *) h; |
5843 | for (p = eh->dyn_relocs; p != NULL; p = p->next) | |
5844 | { | |
5845 | s = p->sec->output_section; | |
5846 | if (s != NULL && (s->flags & SEC_READONLY) != 0) | |
5847 | break; | |
5848 | } | |
5849 | ||
5850 | /* If we didn't find any dynamic relocs in read-only sections, then | |
5851 | we'll be keeping the dynamic relocs and avoiding the copy reloc. */ | |
5852 | if (p == NULL) | |
5853 | { | |
f5385ebf | 5854 | h->non_got_ref = 0; |
f4656909 AM |
5855 | return TRUE; |
5856 | } | |
65f38f15 AM |
5857 | } |
5858 | ||
5d35169e | 5859 | if (h->plt.plist != NULL) |
97b639ba AM |
5860 | { |
5861 | /* We should never get here, but unfortunately there are versions | |
5862 | of gcc out there that improperly (for this ABI) put initialized | |
5863 | function pointers, vtable refs and suchlike in read-only | |
5864 | sections. Allow them to proceed, but warn that this might | |
5865 | break at runtime. */ | |
5866 | (*_bfd_error_handler) | |
5867 | (_("copy reloc against `%s' requires lazy plt linking; " | |
5868 | "avoid setting LD_BIND_NOW=1 or upgrade gcc"), | |
5869 | h->root.root.string); | |
5870 | } | |
5d35169e AM |
5871 | |
5872 | /* This is a reference to a symbol defined by a dynamic object which | |
5873 | is not a function. */ | |
5874 | ||
909272ee AM |
5875 | if (h->size == 0) |
5876 | { | |
5877 | (*_bfd_error_handler) (_("dynamic variable `%s' is zero size"), | |
5878 | h->root.root.string); | |
5879 | return TRUE; | |
5880 | } | |
5881 | ||
5bd4f169 AM |
5882 | /* We must allocate the symbol in our .dynbss section, which will |
5883 | become part of the .bss section of the executable. There will be | |
5884 | an entry for this symbol in the .dynsym section. The dynamic | |
5885 | object will contain position independent code, so all references | |
5886 | from the dynamic object to this symbol will go through the global | |
5887 | offset table. The dynamic linker will use the .dynsym entry to | |
5888 | determine the address it must put in the global offset table, so | |
5889 | both the dynamic object and the regular object will refer to the | |
5890 | same memory location for the variable. */ | |
5bd4f169 | 5891 | |
04c9666a AM |
5892 | /* We must generate a R_PPC64_COPY reloc to tell the dynamic linker |
5893 | to copy the initial value out of the dynamic object and into the | |
5bd4f169 AM |
5894 | runtime process image. We need to remember the offset into the |
5895 | .rela.bss section we are going to use. */ | |
5896 | if ((h->root.u.def.section->flags & SEC_ALLOC) != 0) | |
5897 | { | |
eea6121a | 5898 | htab->relbss->size += sizeof (Elf64_External_Rela); |
f5385ebf | 5899 | h->needs_copy = 1; |
5bd4f169 AM |
5900 | } |
5901 | ||
5902 | /* We need to figure out the alignment required for this symbol. I | |
5903 | have no idea how ELF linkers handle this. */ | |
5904 | power_of_two = bfd_log2 (h->size); | |
5905 | if (power_of_two > 4) | |
5906 | power_of_two = 4; | |
5907 | ||
5908 | /* Apply the required alignment. */ | |
4ce794b7 | 5909 | s = htab->dynbss; |
eea6121a | 5910 | s->size = BFD_ALIGN (s->size, (bfd_size_type) (1 << power_of_two)); |
65f38f15 | 5911 | if (power_of_two > bfd_get_section_alignment (htab->elf.dynobj, s)) |
5bd4f169 | 5912 | { |
65f38f15 | 5913 | if (! bfd_set_section_alignment (htab->elf.dynobj, s, power_of_two)) |
b34976b6 | 5914 | return FALSE; |
5bd4f169 AM |
5915 | } |
5916 | ||
5917 | /* Define the symbol as being at this point in the section. */ | |
5918 | h->root.u.def.section = s; | |
eea6121a | 5919 | h->root.u.def.value = s->size; |
5bd4f169 AM |
5920 | |
5921 | /* Increment the section size to make room for the symbol. */ | |
eea6121a | 5922 | s->size += h->size; |
5bd4f169 | 5923 | |
b34976b6 | 5924 | return TRUE; |
5bd4f169 AM |
5925 | } |
5926 | ||
e86ce104 AM |
5927 | /* If given a function descriptor symbol, hide both the function code |
5928 | sym and the descriptor. */ | |
5929 | static void | |
4ce794b7 AM |
5930 | ppc64_elf_hide_symbol (struct bfd_link_info *info, |
5931 | struct elf_link_hash_entry *h, | |
5932 | bfd_boolean force_local) | |
e86ce104 | 5933 | { |
34814b9f | 5934 | struct ppc_link_hash_entry *eh; |
e86ce104 AM |
5935 | _bfd_elf_link_hash_hide_symbol (info, h, force_local); |
5936 | ||
34814b9f AM |
5937 | eh = (struct ppc_link_hash_entry *) h; |
5938 | if (eh->is_func_descriptor) | |
e86ce104 | 5939 | { |
34814b9f | 5940 | struct ppc_link_hash_entry *fh = eh->oh; |
e86ce104 | 5941 | |
721956f4 | 5942 | if (fh == NULL) |
d1329ca3 AM |
5943 | { |
5944 | const char *p, *q; | |
5945 | struct ppc_link_hash_table *htab; | |
5946 | char save; | |
5947 | ||
5948 | /* We aren't supposed to use alloca in BFD because on | |
5949 | systems which do not have alloca the version in libiberty | |
5950 | calls xmalloc, which might cause the program to crash | |
5951 | when it runs out of memory. This function doesn't have a | |
5952 | return status, so there's no way to gracefully return an | |
5953 | error. So cheat. We know that string[-1] can be safely | |
34814b9f AM |
5954 | accessed; It's either a string in an ELF string table, |
5955 | or allocated in an objalloc structure. */ | |
d1329ca3 | 5956 | |
34814b9f | 5957 | p = eh->elf.root.root.string - 1; |
d1329ca3 AM |
5958 | save = *p; |
5959 | *(char *) p = '.'; | |
5960 | htab = ppc_hash_table (info); | |
34814b9f AM |
5961 | fh = (struct ppc_link_hash_entry *) |
5962 | elf_link_hash_lookup (&htab->elf, p, FALSE, FALSE, FALSE); | |
d1329ca3 AM |
5963 | *(char *) p = save; |
5964 | ||
5965 | /* Unfortunately, if it so happens that the string we were | |
5966 | looking for was allocated immediately before this string, | |
5967 | then we overwrote the string terminator. That's the only | |
5968 | reason the lookup should fail. */ | |
5969 | if (fh == NULL) | |
5970 | { | |
34814b9f AM |
5971 | q = eh->elf.root.root.string + strlen (eh->elf.root.root.string); |
5972 | while (q >= eh->elf.root.root.string && *q == *p) | |
d1329ca3 | 5973 | --q, --p; |
34814b9f AM |
5974 | if (q < eh->elf.root.root.string && *p == '.') |
5975 | fh = (struct ppc_link_hash_entry *) | |
5976 | elf_link_hash_lookup (&htab->elf, p, FALSE, FALSE, FALSE); | |
d1329ca3 AM |
5977 | } |
5978 | if (fh != NULL) | |
5979 | { | |
34814b9f AM |
5980 | eh->oh = fh; |
5981 | fh->oh = eh; | |
d1329ca3 AM |
5982 | } |
5983 | } | |
e86ce104 | 5984 | if (fh != NULL) |
34814b9f | 5985 | _bfd_elf_link_hash_hide_symbol (info, &fh->elf, force_local); |
e86ce104 AM |
5986 | } |
5987 | } | |
5988 | ||
411e1bfb | 5989 | static bfd_boolean |
8843416a AM |
5990 | get_sym_h (struct elf_link_hash_entry **hp, |
5991 | Elf_Internal_Sym **symp, | |
5992 | asection **symsecp, | |
5993 | char **tls_maskp, | |
5994 | Elf_Internal_Sym **locsymsp, | |
5995 | unsigned long r_symndx, | |
5996 | bfd *ibfd) | |
411e1bfb AM |
5997 | { |
5998 | Elf_Internal_Shdr *symtab_hdr = &elf_tdata (ibfd)->symtab_hdr; | |
5999 | ||
6000 | if (r_symndx >= symtab_hdr->sh_info) | |
6001 | { | |
6002 | struct elf_link_hash_entry **sym_hashes = elf_sym_hashes (ibfd); | |
6003 | struct elf_link_hash_entry *h; | |
6004 | ||
6005 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; | |
6006 | while (h->root.type == bfd_link_hash_indirect | |
6007 | || h->root.type == bfd_link_hash_warning) | |
6008 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
6009 | ||
6010 | if (hp != NULL) | |
6011 | *hp = h; | |
6012 | ||
6013 | if (symp != NULL) | |
6014 | *symp = NULL; | |
6015 | ||
6016 | if (symsecp != NULL) | |
6017 | { | |
6018 | asection *symsec = NULL; | |
6019 | if (h->root.type == bfd_link_hash_defined | |
6020 | || h->root.type == bfd_link_hash_defweak) | |
6021 | symsec = h->root.u.def.section; | |
6022 | *symsecp = symsec; | |
6023 | } | |
6024 | ||
e7b938ca | 6025 | if (tls_maskp != NULL) |
411e1bfb AM |
6026 | { |
6027 | struct ppc_link_hash_entry *eh; | |
6028 | ||
6029 | eh = (struct ppc_link_hash_entry *) h; | |
e7b938ca | 6030 | *tls_maskp = &eh->tls_mask; |
411e1bfb AM |
6031 | } |
6032 | } | |
6033 | else | |
6034 | { | |
6035 | Elf_Internal_Sym *sym; | |
6036 | Elf_Internal_Sym *locsyms = *locsymsp; | |
6037 | ||
6038 | if (locsyms == NULL) | |
6039 | { | |
6040 | locsyms = (Elf_Internal_Sym *) symtab_hdr->contents; | |
6041 | if (locsyms == NULL) | |
6042 | locsyms = bfd_elf_get_elf_syms (ibfd, symtab_hdr, | |
6043 | symtab_hdr->sh_info, | |
6044 | 0, NULL, NULL, NULL); | |
6045 | if (locsyms == NULL) | |
6046 | return FALSE; | |
6047 | *locsymsp = locsyms; | |
6048 | } | |
6049 | sym = locsyms + r_symndx; | |
6050 | ||
6051 | if (hp != NULL) | |
6052 | *hp = NULL; | |
6053 | ||
6054 | if (symp != NULL) | |
6055 | *symp = sym; | |
6056 | ||
6057 | if (symsecp != NULL) | |
6058 | { | |
6059 | asection *symsec = NULL; | |
6060 | if ((sym->st_shndx != SHN_UNDEF | |
6061 | && sym->st_shndx < SHN_LORESERVE) | |
6062 | || sym->st_shndx > SHN_HIRESERVE) | |
6063 | symsec = bfd_section_from_elf_index (ibfd, sym->st_shndx); | |
6064 | *symsecp = symsec; | |
6065 | } | |
6066 | ||
e7b938ca | 6067 | if (tls_maskp != NULL) |
411e1bfb AM |
6068 | { |
6069 | struct got_entry **lgot_ents; | |
e7b938ca | 6070 | char *tls_mask; |
411e1bfb | 6071 | |
e7b938ca | 6072 | tls_mask = NULL; |
411e1bfb AM |
6073 | lgot_ents = elf_local_got_ents (ibfd); |
6074 | if (lgot_ents != NULL) | |
6075 | { | |
e7b938ca AM |
6076 | char *lgot_masks = (char *) (lgot_ents + symtab_hdr->sh_info); |
6077 | tls_mask = &lgot_masks[r_symndx]; | |
411e1bfb | 6078 | } |
e7b938ca | 6079 | *tls_maskp = tls_mask; |
411e1bfb AM |
6080 | } |
6081 | } | |
6082 | return TRUE; | |
6083 | } | |
6084 | ||
e7b938ca | 6085 | /* Returns TLS_MASKP for the given REL symbol. Function return is 0 on |
951fd09b | 6086 | error, 2 on a toc GD type suitable for optimization, 3 on a toc LD |
ad8e1ba5 | 6087 | type suitable for optimization, and 1 otherwise. */ |
951fd09b AM |
6088 | |
6089 | static int | |
0d4792f7 AM |
6090 | get_tls_mask (char **tls_maskp, unsigned long *toc_symndx, |
6091 | Elf_Internal_Sym **locsymsp, | |
4ce794b7 | 6092 | const Elf_Internal_Rela *rel, bfd *ibfd) |
411e1bfb AM |
6093 | { |
6094 | unsigned long r_symndx; | |
0d4792f7 | 6095 | int next_r; |
411e1bfb AM |
6096 | struct elf_link_hash_entry *h; |
6097 | Elf_Internal_Sym *sym; | |
6098 | asection *sec; | |
6099 | bfd_vma off; | |
6100 | ||
6101 | r_symndx = ELF64_R_SYM (rel->r_info); | |
e7b938ca | 6102 | if (!get_sym_h (&h, &sym, &sec, tls_maskp, locsymsp, r_symndx, ibfd)) |
951fd09b | 6103 | return 0; |
411e1bfb | 6104 | |
e7b938ca | 6105 | if ((*tls_maskp != NULL && **tls_maskp != 0) |
411e1bfb | 6106 | || sec == NULL |
7c8fe5c4 | 6107 | || ppc64_elf_section_data (sec)->sec_type != sec_toc) |
951fd09b | 6108 | return 1; |
411e1bfb AM |
6109 | |
6110 | /* Look inside a TOC section too. */ | |
6111 | if (h != NULL) | |
6112 | { | |
6113 | BFD_ASSERT (h->root.type == bfd_link_hash_defined); | |
6114 | off = h->root.u.def.value; | |
6115 | } | |
6116 | else | |
6117 | off = sym->st_value; | |
6118 | off += rel->r_addend; | |
6119 | BFD_ASSERT (off % 8 == 0); | |
7c8fe5c4 AM |
6120 | r_symndx = ppc64_elf_section_data (sec)->u.t_symndx[off / 8]; |
6121 | next_r = ppc64_elf_section_data (sec)->u.t_symndx[off / 8 + 1]; | |
e7b938ca | 6122 | if (!get_sym_h (&h, &sym, &sec, tls_maskp, locsymsp, r_symndx, ibfd)) |
951fd09b | 6123 | return 0; |
0d4792f7 AM |
6124 | if (toc_symndx != NULL) |
6125 | *toc_symndx = r_symndx; | |
6126 | if ((h == NULL | |
6127 | || ((h->root.type == bfd_link_hash_defined | |
6128 | || h->root.type == bfd_link_hash_defweak) | |
f5385ebf | 6129 | && !h->def_dynamic)) |
0d4792f7 AM |
6130 | && (next_r == -1 || next_r == -2)) |
6131 | return 1 - next_r; | |
951fd09b | 6132 | return 1; |
411e1bfb AM |
6133 | } |
6134 | ||
754021d0 | 6135 | /* Adjust all global syms defined in opd sections. In gcc generated |
8387904d | 6136 | code for the old ABI, these will already have been done. */ |
754021d0 AM |
6137 | |
6138 | static bfd_boolean | |
6139 | adjust_opd_syms (struct elf_link_hash_entry *h, void *inf ATTRIBUTE_UNUSED) | |
6140 | { | |
6141 | struct ppc_link_hash_entry *eh; | |
6142 | asection *sym_sec; | |
6143 | long *opd_adjust; | |
6144 | ||
6145 | if (h->root.type == bfd_link_hash_indirect) | |
6146 | return TRUE; | |
6147 | ||
6148 | if (h->root.type == bfd_link_hash_warning) | |
6149 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
6150 | ||
6151 | if (h->root.type != bfd_link_hash_defined | |
6152 | && h->root.type != bfd_link_hash_defweak) | |
6153 | return TRUE; | |
6154 | ||
6155 | eh = (struct ppc_link_hash_entry *) h; | |
6156 | if (eh->adjust_done) | |
6157 | return TRUE; | |
6158 | ||
6159 | sym_sec = eh->elf.root.u.def.section; | |
4025353c AM |
6160 | opd_adjust = get_opd_info (sym_sec); |
6161 | if (opd_adjust != NULL) | |
754021d0 | 6162 | { |
3f764659 | 6163 | long adjust = opd_adjust[eh->elf.root.u.def.value / 8]; |
4025353c AM |
6164 | if (adjust == -1) |
6165 | { | |
6166 | /* This entry has been deleted. */ | |
b3fac117 | 6167 | asection *dsec = ppc64_elf_tdata (sym_sec->owner)->deleted_section; |
81688140 AM |
6168 | if (dsec == NULL) |
6169 | { | |
6170 | for (dsec = sym_sec->owner->sections; dsec; dsec = dsec->next) | |
6171 | if (elf_discarded_section (dsec)) | |
6172 | { | |
b3fac117 | 6173 | ppc64_elf_tdata (sym_sec->owner)->deleted_section = dsec; |
81688140 AM |
6174 | break; |
6175 | } | |
6176 | } | |
4025353c | 6177 | eh->elf.root.u.def.value = 0; |
81688140 | 6178 | eh->elf.root.u.def.section = dsec; |
4025353c AM |
6179 | } |
6180 | else | |
6181 | eh->elf.root.u.def.value += adjust; | |
754021d0 AM |
6182 | eh->adjust_done = 1; |
6183 | } | |
6184 | return TRUE; | |
6185 | } | |
6186 | ||
8c1d1bb8 AM |
6187 | /* Handles decrementing dynamic reloc counts for the reloc specified by |
6188 | R_INFO in section SEC. If LOCAL_SYMS is NULL, then H and SYM_SEC | |
6189 | have already been determined. */ | |
6190 | ||
6191 | static bfd_boolean | |
6192 | dec_dynrel_count (bfd_vma r_info, | |
6193 | asection *sec, | |
6194 | struct bfd_link_info *info, | |
6195 | Elf_Internal_Sym **local_syms, | |
6196 | struct elf_link_hash_entry *h, | |
6197 | asection *sym_sec) | |
6198 | { | |
6199 | enum elf_ppc64_reloc_type r_type; | |
6200 | struct ppc_dyn_relocs *p; | |
6201 | struct ppc_dyn_relocs **pp; | |
6202 | ||
6203 | /* Can this reloc be dynamic? This switch, and later tests here | |
6204 | should be kept in sync with the code in check_relocs. */ | |
6205 | r_type = ELF64_R_TYPE (r_info); | |
6206 | switch (r_type) | |
6207 | { | |
6208 | default: | |
6209 | return TRUE; | |
6210 | ||
6211 | case R_PPC64_TPREL16: | |
6212 | case R_PPC64_TPREL16_LO: | |
6213 | case R_PPC64_TPREL16_HI: | |
6214 | case R_PPC64_TPREL16_HA: | |
6215 | case R_PPC64_TPREL16_DS: | |
6216 | case R_PPC64_TPREL16_LO_DS: | |
6217 | case R_PPC64_TPREL16_HIGHER: | |
6218 | case R_PPC64_TPREL16_HIGHERA: | |
6219 | case R_PPC64_TPREL16_HIGHEST: | |
6220 | case R_PPC64_TPREL16_HIGHESTA: | |
6221 | if (!info->shared) | |
6222 | return TRUE; | |
6223 | ||
6224 | case R_PPC64_TPREL64: | |
6225 | case R_PPC64_DTPMOD64: | |
6226 | case R_PPC64_DTPREL64: | |
6227 | case R_PPC64_ADDR64: | |
6228 | case R_PPC64_REL30: | |
6229 | case R_PPC64_REL32: | |
6230 | case R_PPC64_REL64: | |
6231 | case R_PPC64_ADDR14: | |
6232 | case R_PPC64_ADDR14_BRNTAKEN: | |
6233 | case R_PPC64_ADDR14_BRTAKEN: | |
6234 | case R_PPC64_ADDR16: | |
6235 | case R_PPC64_ADDR16_DS: | |
6236 | case R_PPC64_ADDR16_HA: | |
6237 | case R_PPC64_ADDR16_HI: | |
6238 | case R_PPC64_ADDR16_HIGHER: | |
6239 | case R_PPC64_ADDR16_HIGHERA: | |
6240 | case R_PPC64_ADDR16_HIGHEST: | |
6241 | case R_PPC64_ADDR16_HIGHESTA: | |
6242 | case R_PPC64_ADDR16_LO: | |
6243 | case R_PPC64_ADDR16_LO_DS: | |
6244 | case R_PPC64_ADDR24: | |
6245 | case R_PPC64_ADDR32: | |
6246 | case R_PPC64_UADDR16: | |
6247 | case R_PPC64_UADDR32: | |
6248 | case R_PPC64_UADDR64: | |
6249 | case R_PPC64_TOC: | |
6250 | break; | |
6251 | } | |
6252 | ||
6253 | if (local_syms != NULL) | |
6254 | { | |
6255 | unsigned long r_symndx; | |
6256 | Elf_Internal_Sym *sym; | |
6257 | bfd *ibfd = sec->owner; | |
6258 | ||
6259 | r_symndx = ELF64_R_SYM (r_info); | |
6260 | if (!get_sym_h (&h, &sym, &sym_sec, NULL, local_syms, r_symndx, ibfd)) | |
6261 | return FALSE; | |
6262 | } | |
6263 | ||
6264 | if ((info->shared | |
6265 | && (MUST_BE_DYN_RELOC (r_type) | |
6266 | || (h != NULL | |
6267 | && (!info->symbolic | |
6268 | || h->root.type == bfd_link_hash_defweak | |
6269 | || !h->def_regular)))) | |
6270 | || (ELIMINATE_COPY_RELOCS | |
6271 | && !info->shared | |
6272 | && h != NULL | |
6273 | && (h->root.type == bfd_link_hash_defweak | |
6274 | || !h->def_regular))) | |
6275 | ; | |
6276 | else | |
6277 | return TRUE; | |
6278 | ||
6279 | if (h != NULL) | |
6280 | pp = &((struct ppc_link_hash_entry *) h)->dyn_relocs; | |
8c1d1bb8 | 6281 | else |
6edfbbad | 6282 | { |
60124e18 AM |
6283 | if (sym_sec != NULL) |
6284 | { | |
6285 | void *vpp = &elf_section_data (sym_sec)->local_dynrel; | |
6286 | pp = (struct ppc_dyn_relocs **) vpp; | |
6287 | } | |
6288 | else | |
6289 | { | |
6290 | void *vpp = &elf_section_data (sec)->local_dynrel; | |
6291 | pp = (struct ppc_dyn_relocs **) vpp; | |
6292 | } | |
6293 | ||
6294 | /* elf_gc_sweep may have already removed all dyn relocs associated | |
6295 | with local syms for a given section. Don't report a dynreloc | |
6296 | miscount. */ | |
6297 | if (*pp == NULL) | |
6298 | return TRUE; | |
6edfbbad | 6299 | } |
8c1d1bb8 AM |
6300 | |
6301 | while ((p = *pp) != NULL) | |
6302 | { | |
6303 | if (p->sec == sec) | |
6304 | { | |
6305 | if (!MUST_BE_DYN_RELOC (r_type)) | |
6306 | p->pc_count -= 1; | |
6307 | p->count -= 1; | |
6308 | if (p->count == 0) | |
6309 | *pp = p->next; | |
6310 | return TRUE; | |
6311 | } | |
6312 | pp = &p->next; | |
6313 | } | |
6314 | ||
6315 | (*_bfd_error_handler) (_("dynreloc miscount for %B, section %A"), | |
6316 | sec->owner, sec); | |
6317 | bfd_set_error (bfd_error_bad_value); | |
6318 | return FALSE; | |
6319 | } | |
6320 | ||
754021d0 AM |
6321 | /* Remove unused Official Procedure Descriptor entries. Currently we |
6322 | only remove those associated with functions in discarded link-once | |
6323 | sections, or weakly defined functions that have been overridden. It | |
6324 | would be possible to remove many more entries for statically linked | |
6325 | applications. */ | |
6326 | ||
b34976b6 | 6327 | bfd_boolean |
3f764659 | 6328 | ppc64_elf_edit_opd (bfd *obfd, struct bfd_link_info *info, |
b4f4e59f | 6329 | bfd_boolean no_opd_opt, |
3f764659 | 6330 | bfd_boolean non_overlapping) |
1e2f5b6e AM |
6331 | { |
6332 | bfd *ibfd; | |
754021d0 | 6333 | bfd_boolean some_edited = FALSE; |
3f764659 | 6334 | asection *need_pad = NULL; |
1e2f5b6e | 6335 | |
411e1bfb | 6336 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next) |
1e2f5b6e AM |
6337 | { |
6338 | asection *sec; | |
6339 | Elf_Internal_Rela *relstart, *rel, *relend; | |
6340 | Elf_Internal_Shdr *symtab_hdr; | |
6cdc0ccc | 6341 | Elf_Internal_Sym *local_syms; |
1e2f5b6e AM |
6342 | struct elf_link_hash_entry **sym_hashes; |
6343 | bfd_vma offset; | |
d6fe2dc1 | 6344 | bfd_size_type amt; |
4025353c | 6345 | long *opd_adjust; |
3f764659 JJ |
6346 | bfd_boolean need_edit, add_aux_fields; |
6347 | bfd_size_type cnt_16b = 0; | |
1e2f5b6e AM |
6348 | |
6349 | sec = bfd_get_section_by_name (ibfd, ".opd"); | |
46de2a7c | 6350 | if (sec == NULL || sec->size == 0) |
1e2f5b6e AM |
6351 | continue; |
6352 | ||
3f764659 | 6353 | amt = sec->size * sizeof (long) / 8; |
4025353c AM |
6354 | opd_adjust = get_opd_info (sec); |
6355 | if (opd_adjust == NULL) | |
d6fe2dc1 | 6356 | { |
4b85d634 AM |
6357 | /* check_relocs hasn't been called. Must be a ld -r link |
6358 | or --just-symbols object. */ | |
b4f4e59f | 6359 | opd_adjust = bfd_alloc (obfd, amt); |
46de2a7c AM |
6360 | if (opd_adjust == NULL) |
6361 | return FALSE; | |
7c8fe5c4 AM |
6362 | ppc64_elf_section_data (sec)->u.opd_adjust = opd_adjust; |
6363 | BFD_ASSERT (ppc64_elf_section_data (sec)->sec_type == sec_normal); | |
6364 | ppc64_elf_section_data (sec)->sec_type = sec_opd; | |
d6fe2dc1 | 6365 | } |
4025353c | 6366 | memset (opd_adjust, 0, amt); |
1e2f5b6e | 6367 | |
b4f4e59f AM |
6368 | if (no_opd_opt) |
6369 | continue; | |
6370 | ||
4b85d634 AM |
6371 | if (sec->sec_info_type == ELF_INFO_TYPE_JUST_SYMS) |
6372 | continue; | |
6373 | ||
1e2f5b6e AM |
6374 | if (sec->output_section == bfd_abs_section_ptr) |
6375 | continue; | |
6376 | ||
6377 | /* Look through the section relocs. */ | |
6378 | if ((sec->flags & SEC_RELOC) == 0 || sec->reloc_count == 0) | |
6379 | continue; | |
6380 | ||
6cdc0ccc | 6381 | local_syms = NULL; |
1e2f5b6e AM |
6382 | symtab_hdr = &elf_tdata (ibfd)->symtab_hdr; |
6383 | sym_hashes = elf_sym_hashes (ibfd); | |
6384 | ||
6385 | /* Read the relocations. */ | |
4ce794b7 | 6386 | relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL, |
45d6a902 | 6387 | info->keep_memory); |
1e2f5b6e | 6388 | if (relstart == NULL) |
b34976b6 | 6389 | return FALSE; |
1e2f5b6e AM |
6390 | |
6391 | /* First run through the relocs to check they are sane, and to | |
6392 | determine whether we need to edit this opd section. */ | |
b34976b6 | 6393 | need_edit = FALSE; |
3f764659 | 6394 | need_pad = sec; |
1e2f5b6e AM |
6395 | offset = 0; |
6396 | relend = relstart + sec->reloc_count; | |
50bc7936 | 6397 | for (rel = relstart; rel < relend; ) |
1e2f5b6e | 6398 | { |
04c9666a | 6399 | enum elf_ppc64_reloc_type r_type; |
1e2f5b6e AM |
6400 | unsigned long r_symndx; |
6401 | asection *sym_sec; | |
6402 | struct elf_link_hash_entry *h; | |
6403 | Elf_Internal_Sym *sym; | |
6404 | ||
3f764659 | 6405 | /* .opd contains a regular array of 16 or 24 byte entries. We're |
1e2f5b6e AM |
6406 | only interested in the reloc pointing to a function entry |
6407 | point. */ | |
50bc7936 AM |
6408 | if (rel->r_offset != offset |
6409 | || rel + 1 >= relend | |
6410 | || (rel + 1)->r_offset != offset + 8) | |
1e2f5b6e AM |
6411 | { |
6412 | /* If someone messes with .opd alignment then after a | |
6413 | "ld -r" we might have padding in the middle of .opd. | |
6414 | Also, there's nothing to prevent someone putting | |
6415 | something silly in .opd with the assembler. No .opd | |
b34976b6 | 6416 | optimization for them! */ |
3f764659 | 6417 | broken_opd: |
1e2f5b6e | 6418 | (*_bfd_error_handler) |
d003868e | 6419 | (_("%B: .opd is not a regular array of opd entries"), ibfd); |
b34976b6 | 6420 | need_edit = FALSE; |
1e2f5b6e AM |
6421 | break; |
6422 | } | |
6423 | ||
50bc7936 AM |
6424 | if ((r_type = ELF64_R_TYPE (rel->r_info)) != R_PPC64_ADDR64 |
6425 | || (r_type = ELF64_R_TYPE ((rel + 1)->r_info)) != R_PPC64_TOC) | |
6426 | { | |
6427 | (*_bfd_error_handler) | |
d003868e AM |
6428 | (_("%B: unexpected reloc type %u in .opd section"), |
6429 | ibfd, r_type); | |
50bc7936 AM |
6430 | need_edit = FALSE; |
6431 | break; | |
6432 | } | |
6433 | ||
1e2f5b6e | 6434 | r_symndx = ELF64_R_SYM (rel->r_info); |
411e1bfb AM |
6435 | if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, |
6436 | r_symndx, ibfd)) | |
50bc7936 | 6437 | goto error_ret; |
1e2f5b6e AM |
6438 | |
6439 | if (sym_sec == NULL || sym_sec->owner == NULL) | |
6440 | { | |
411e1bfb AM |
6441 | const char *sym_name; |
6442 | if (h != NULL) | |
6443 | sym_name = h->root.root.string; | |
6444 | else | |
26c61ae5 L |
6445 | sym_name = bfd_elf_sym_name (ibfd, symtab_hdr, sym, |
6446 | sym_sec); | |
411e1bfb | 6447 | |
1e2f5b6e | 6448 | (*_bfd_error_handler) |
d003868e AM |
6449 | (_("%B: undefined sym `%s' in .opd section"), |
6450 | ibfd, sym_name); | |
b34976b6 | 6451 | need_edit = FALSE; |
1e2f5b6e AM |
6452 | break; |
6453 | } | |
6454 | ||
51020317 AM |
6455 | /* opd entries are always for functions defined in the |
6456 | current input bfd. If the symbol isn't defined in the | |
6457 | input bfd, then we won't be using the function in this | |
6458 | bfd; It must be defined in a linkonce section in another | |
6459 | bfd, or is weak. It's also possible that we are | |
6460 | discarding the function due to a linker script /DISCARD/, | |
6461 | which we test for via the output_section. */ | |
6462 | if (sym_sec->owner != ibfd | |
6463 | || sym_sec->output_section == bfd_abs_section_ptr) | |
b34976b6 | 6464 | need_edit = TRUE; |
1e2f5b6e | 6465 | |
50bc7936 | 6466 | rel += 2; |
3f764659 JJ |
6467 | if (rel == relend |
6468 | || (rel + 1 == relend && rel->r_offset == offset + 16)) | |
6469 | { | |
6470 | if (sec->size == offset + 24) | |
6471 | { | |
6472 | need_pad = NULL; | |
6473 | break; | |
6474 | } | |
6475 | if (rel == relend && sec->size == offset + 16) | |
6476 | { | |
6477 | cnt_16b++; | |
6478 | break; | |
6479 | } | |
6480 | goto broken_opd; | |
6481 | } | |
6482 | ||
6483 | if (rel->r_offset == offset + 24) | |
6484 | offset += 24; | |
6485 | else if (rel->r_offset != offset + 16) | |
6486 | goto broken_opd; | |
6487 | else if (rel + 1 < relend | |
6488 | && ELF64_R_TYPE (rel[0].r_info) == R_PPC64_ADDR64 | |
6489 | && ELF64_R_TYPE (rel[1].r_info) == R_PPC64_TOC) | |
6490 | { | |
6491 | offset += 16; | |
6492 | cnt_16b++; | |
6493 | } | |
6494 | else if (rel + 2 < relend | |
6495 | && ELF64_R_TYPE (rel[1].r_info) == R_PPC64_ADDR64 | |
6496 | && ELF64_R_TYPE (rel[2].r_info) == R_PPC64_TOC) | |
6497 | { | |
6498 | offset += 24; | |
6499 | rel += 1; | |
6500 | } | |
6501 | else | |
6502 | goto broken_opd; | |
1e2f5b6e AM |
6503 | } |
6504 | ||
3f764659 JJ |
6505 | add_aux_fields = non_overlapping && cnt_16b > 0; |
6506 | ||
6507 | if (need_edit || add_aux_fields) | |
1e2f5b6e AM |
6508 | { |
6509 | Elf_Internal_Rela *write_rel; | |
6510 | bfd_byte *rptr, *wptr; | |
3f764659 | 6511 | bfd_byte *new_contents = NULL; |
b34976b6 | 6512 | bfd_boolean skip; |
3f764659 | 6513 | long opd_ent_size; |
1e2f5b6e AM |
6514 | |
6515 | /* This seems a waste of time as input .opd sections are all | |
6516 | zeros as generated by gcc, but I suppose there's no reason | |
6517 | this will always be so. We might start putting something in | |
6518 | the third word of .opd entries. */ | |
6519 | if ((sec->flags & SEC_IN_MEMORY) == 0) | |
6520 | { | |
eea6121a AM |
6521 | bfd_byte *loc; |
6522 | if (!bfd_malloc_and_get_section (ibfd, sec, &loc)) | |
6cdc0ccc | 6523 | { |
eea6121a AM |
6524 | if (loc != NULL) |
6525 | free (loc); | |
50bc7936 | 6526 | error_ret: |
6cdc0ccc AM |
6527 | if (local_syms != NULL |
6528 | && symtab_hdr->contents != (unsigned char *) local_syms) | |
6529 | free (local_syms); | |
6cdc0ccc AM |
6530 | if (elf_section_data (sec)->relocs != relstart) |
6531 | free (relstart); | |
b34976b6 | 6532 | return FALSE; |
6cdc0ccc | 6533 | } |
1e2f5b6e AM |
6534 | sec->contents = loc; |
6535 | sec->flags |= (SEC_IN_MEMORY | SEC_HAS_CONTENTS); | |
6536 | } | |
6537 | ||
6538 | elf_section_data (sec)->relocs = relstart; | |
6539 | ||
3f764659 | 6540 | new_contents = sec->contents; |
3f764659 JJ |
6541 | if (add_aux_fields) |
6542 | { | |
6543 | new_contents = bfd_malloc (sec->size + cnt_16b * 8); | |
6544 | if (new_contents == NULL) | |
6545 | return FALSE; | |
6546 | need_pad = FALSE; | |
3f764659 | 6547 | } |
b4f4e59f AM |
6548 | wptr = new_contents; |
6549 | rptr = sec->contents; | |
3f764659 | 6550 | |
1e2f5b6e | 6551 | write_rel = relstart; |
b34976b6 | 6552 | skip = FALSE; |
1e2f5b6e | 6553 | offset = 0; |
3f764659 | 6554 | opd_ent_size = 0; |
1e2f5b6e AM |
6555 | for (rel = relstart; rel < relend; rel++) |
6556 | { | |
50bc7936 AM |
6557 | unsigned long r_symndx; |
6558 | asection *sym_sec; | |
6559 | struct elf_link_hash_entry *h; | |
6560 | Elf_Internal_Sym *sym; | |
6561 | ||
6562 | r_symndx = ELF64_R_SYM (rel->r_info); | |
6563 | if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, | |
d37c89e5 | 6564 | r_symndx, ibfd)) |
50bc7936 AM |
6565 | goto error_ret; |
6566 | ||
1e2f5b6e AM |
6567 | if (rel->r_offset == offset) |
6568 | { | |
50bc7936 | 6569 | struct ppc_link_hash_entry *fdh = NULL; |
3f764659 JJ |
6570 | |
6571 | /* See if the .opd entry is full 24 byte or | |
6572 | 16 byte (with fd_aux entry overlapped with next | |
6573 | fd_func). */ | |
6574 | opd_ent_size = 24; | |
6575 | if ((rel + 2 == relend && sec->size == offset + 16) | |
6576 | || (rel + 3 < relend | |
6577 | && rel[2].r_offset == offset + 16 | |
6578 | && rel[3].r_offset == offset + 24 | |
6579 | && ELF64_R_TYPE (rel[2].r_info) == R_PPC64_ADDR64 | |
6580 | && ELF64_R_TYPE (rel[3].r_info) == R_PPC64_TOC)) | |
6581 | opd_ent_size = 16; | |
6582 | ||
4025353c AM |
6583 | if (h != NULL |
6584 | && h->root.root.string[0] == '.') | |
c4f68ce3 AM |
6585 | { |
6586 | fdh = get_fdh ((struct ppc_link_hash_entry *) h, | |
6587 | ppc_hash_table (info)); | |
6588 | if (fdh != NULL | |
6589 | && fdh->elf.root.type != bfd_link_hash_defined | |
6590 | && fdh->elf.root.type != bfd_link_hash_defweak) | |
6591 | fdh = NULL; | |
6592 | } | |
1e2f5b6e | 6593 | |
51020317 AM |
6594 | skip = (sym_sec->owner != ibfd |
6595 | || sym_sec->output_section == bfd_abs_section_ptr); | |
a4aa0fb7 AM |
6596 | if (skip) |
6597 | { | |
4025353c | 6598 | if (fdh != NULL && sym_sec->owner == ibfd) |
a4aa0fb7 AM |
6599 | { |
6600 | /* Arrange for the function descriptor sym | |
6601 | to be dropped. */ | |
d6fe2dc1 AM |
6602 | fdh->elf.root.u.def.value = 0; |
6603 | fdh->elf.root.u.def.section = sym_sec; | |
a4aa0fb7 | 6604 | } |
3f764659 | 6605 | opd_adjust[rel->r_offset / 8] = -1; |
a4aa0fb7 AM |
6606 | } |
6607 | else | |
1e2f5b6e AM |
6608 | { |
6609 | /* We'll be keeping this opd entry. */ | |
6610 | ||
4025353c | 6611 | if (fdh != NULL) |
1e2f5b6e | 6612 | { |
754021d0 AM |
6613 | /* Redefine the function descriptor symbol to |
6614 | this location in the opd section. It is | |
6615 | necessary to update the value here rather | |
6616 | than using an array of adjustments as we do | |
6617 | for local symbols, because various places | |
6618 | in the generic ELF code use the value | |
6619 | stored in u.def.value. */ | |
3f764659 | 6620 | fdh->elf.root.u.def.value = wptr - new_contents; |
754021d0 | 6621 | fdh->adjust_done = 1; |
1e2f5b6e | 6622 | } |
754021d0 AM |
6623 | |
6624 | /* Local syms are a bit tricky. We could | |
6625 | tweak them as they can be cached, but | |
6626 | we'd need to look through the local syms | |
6627 | for the function descriptor sym which we | |
6628 | don't have at the moment. So keep an | |
6629 | array of adjustments. */ | |
3f764659 JJ |
6630 | opd_adjust[rel->r_offset / 8] |
6631 | = (wptr - new_contents) - (rptr - sec->contents); | |
1e2f5b6e AM |
6632 | |
6633 | if (wptr != rptr) | |
3f764659 JJ |
6634 | memcpy (wptr, rptr, opd_ent_size); |
6635 | wptr += opd_ent_size; | |
6636 | if (add_aux_fields && opd_ent_size == 16) | |
6637 | { | |
6638 | memset (wptr, '\0', 8); | |
6639 | wptr += 8; | |
6640 | } | |
1e2f5b6e | 6641 | } |
3f764659 JJ |
6642 | rptr += opd_ent_size; |
6643 | offset += opd_ent_size; | |
1e2f5b6e AM |
6644 | } |
6645 | ||
50bc7936 AM |
6646 | if (skip) |
6647 | { | |
60124e18 AM |
6648 | if (!NO_OPD_RELOCS |
6649 | && !info->relocatable | |
18d944df AM |
6650 | && !dec_dynrel_count (rel->r_info, sec, info, |
6651 | NULL, h, sym_sec)) | |
8c1d1bb8 | 6652 | goto error_ret; |
50bc7936 AM |
6653 | } |
6654 | else | |
1e2f5b6e | 6655 | { |
50bc7936 AM |
6656 | /* We need to adjust any reloc offsets to point to the |
6657 | new opd entries. While we're at it, we may as well | |
6658 | remove redundant relocs. */ | |
3f764659 | 6659 | rel->r_offset += opd_adjust[(offset - opd_ent_size) / 8]; |
1e2f5b6e AM |
6660 | if (write_rel != rel) |
6661 | memcpy (write_rel, rel, sizeof (*rel)); | |
6662 | ++write_rel; | |
6663 | } | |
6664 | } | |
6665 | ||
3f764659 | 6666 | sec->size = wptr - new_contents; |
1e2f5b6e | 6667 | sec->reloc_count = write_rel - relstart; |
3f764659 JJ |
6668 | if (add_aux_fields) |
6669 | { | |
6670 | free (sec->contents); | |
6671 | sec->contents = new_contents; | |
6672 | } | |
6673 | ||
05bf9422 | 6674 | /* Fudge the header size too, as this is used later in |
cdcf6e38 AM |
6675 | elf_bfd_final_link if we are emitting relocs. */ |
6676 | elf_section_data (sec)->rel_hdr.sh_size | |
6677 | = sec->reloc_count * elf_section_data (sec)->rel_hdr.sh_entsize; | |
6678 | BFD_ASSERT (elf_section_data (sec)->rel_hdr2 == NULL); | |
754021d0 | 6679 | some_edited = TRUE; |
1e2f5b6e | 6680 | } |
6cdc0ccc | 6681 | else if (elf_section_data (sec)->relocs != relstart) |
1e2f5b6e | 6682 | free (relstart); |
6cdc0ccc | 6683 | |
411e1bfb AM |
6684 | if (local_syms != NULL |
6685 | && symtab_hdr->contents != (unsigned char *) local_syms) | |
6686 | { | |
6687 | if (!info->keep_memory) | |
6688 | free (local_syms); | |
6689 | else | |
6690 | symtab_hdr->contents = (unsigned char *) local_syms; | |
6691 | } | |
6692 | } | |
6693 | ||
754021d0 AM |
6694 | if (some_edited) |
6695 | elf_link_hash_traverse (elf_hash_table (info), adjust_opd_syms, NULL); | |
6696 | ||
3f764659 JJ |
6697 | /* If we are doing a final link and the last .opd entry is just 16 byte |
6698 | long, add a 8 byte padding after it. */ | |
6699 | if (need_pad != NULL && !info->relocatable) | |
6700 | { | |
6701 | bfd_byte *p; | |
6702 | ||
6703 | if ((need_pad->flags & SEC_IN_MEMORY) == 0) | |
6704 | { | |
6705 | BFD_ASSERT (need_pad->size > 0); | |
6706 | ||
6707 | p = bfd_malloc (need_pad->size + 8); | |
6708 | if (p == NULL) | |
6709 | return FALSE; | |
699733f6 | 6710 | |
3f764659 JJ |
6711 | if (! bfd_get_section_contents (need_pad->owner, need_pad, |
6712 | p, 0, need_pad->size)) | |
6713 | return FALSE; | |
6714 | ||
6715 | need_pad->contents = p; | |
6716 | need_pad->flags |= (SEC_IN_MEMORY | SEC_HAS_CONTENTS); | |
6717 | } | |
6718 | else | |
6719 | { | |
6720 | p = bfd_realloc (need_pad->contents, need_pad->size + 8); | |
6721 | if (p == NULL) | |
6722 | return FALSE; | |
6723 | ||
6724 | need_pad->contents = p; | |
6725 | } | |
6726 | ||
6727 | memset (need_pad->contents + need_pad->size, 0, 8); | |
6728 | need_pad->size += 8; | |
6729 | } | |
6730 | ||
411e1bfb AM |
6731 | return TRUE; |
6732 | } | |
6733 | ||
e1918d23 | 6734 | /* Set htab->tls_get_addr and call the generic ELF tls_setup function. */ |
411e1bfb | 6735 | |
e1918d23 | 6736 | asection * |
4ce794b7 | 6737 | ppc64_elf_tls_setup (bfd *obfd, struct bfd_link_info *info) |
411e1bfb | 6738 | { |
411e1bfb AM |
6739 | struct ppc_link_hash_table *htab; |
6740 | ||
411e1bfb | 6741 | htab = ppc_hash_table (info); |
a48ebf4d AM |
6742 | if (htab->tls_get_addr != NULL) |
6743 | { | |
8387904d | 6744 | struct ppc_link_hash_entry *h = htab->tls_get_addr; |
a48ebf4d | 6745 | |
8387904d AM |
6746 | while (h->elf.root.type == bfd_link_hash_indirect |
6747 | || h->elf.root.type == bfd_link_hash_warning) | |
6748 | h = (struct ppc_link_hash_entry *) h->elf.root.u.i.link; | |
a48ebf4d AM |
6749 | |
6750 | htab->tls_get_addr = h; | |
8387904d AM |
6751 | |
6752 | if (htab->tls_get_addr_fd == NULL | |
6753 | && h->oh != NULL | |
c4f68ce3 AM |
6754 | && h->oh->is_func_descriptor |
6755 | && (h->oh->elf.root.type == bfd_link_hash_defined | |
6756 | || h->oh->elf.root.type == bfd_link_hash_defweak)) | |
8387904d AM |
6757 | htab->tls_get_addr_fd = h->oh; |
6758 | } | |
6759 | ||
6760 | if (htab->tls_get_addr_fd != NULL) | |
6761 | { | |
6762 | struct ppc_link_hash_entry *h = htab->tls_get_addr_fd; | |
6763 | ||
6764 | while (h->elf.root.type == bfd_link_hash_indirect | |
6765 | || h->elf.root.type == bfd_link_hash_warning) | |
6766 | h = (struct ppc_link_hash_entry *) h->elf.root.u.i.link; | |
6767 | ||
6768 | htab->tls_get_addr_fd = h; | |
a48ebf4d AM |
6769 | } |
6770 | ||
e1918d23 | 6771 | return _bfd_elf_tls_setup (obfd, info); |
951fd09b | 6772 | } |
411e1bfb | 6773 | |
951fd09b AM |
6774 | /* Run through all the TLS relocs looking for optimization |
6775 | opportunities. The linker has been hacked (see ppc64elf.em) to do | |
6776 | a preliminary section layout so that we know the TLS segment | |
6777 | offsets. We can't optimize earlier because some optimizations need | |
6778 | to know the tp offset, and we need to optimize before allocating | |
6779 | dynamic relocations. */ | |
6780 | ||
6781 | bfd_boolean | |
4ce794b7 | 6782 | ppc64_elf_tls_optimize (bfd *obfd ATTRIBUTE_UNUSED, struct bfd_link_info *info) |
951fd09b AM |
6783 | { |
6784 | bfd *ibfd; | |
6785 | asection *sec; | |
6786 | struct ppc_link_hash_table *htab; | |
6787 | ||
1049f94e | 6788 | if (info->relocatable || info->shared) |
411e1bfb AM |
6789 | return TRUE; |
6790 | ||
951fd09b | 6791 | htab = ppc_hash_table (info); |
411e1bfb AM |
6792 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next) |
6793 | { | |
6794 | Elf_Internal_Sym *locsyms = NULL; | |
30038c59 AM |
6795 | asection *toc = bfd_get_section_by_name (ibfd, ".toc"); |
6796 | unsigned char *toc_ref = NULL; | |
411e1bfb | 6797 | |
30038c59 AM |
6798 | /* Look at all the sections for this file, with TOC last. */ |
6799 | for (sec = (ibfd->sections == toc && toc && toc->next ? toc->next | |
6800 | : ibfd->sections); | |
6801 | sec != NULL; | |
6802 | sec = (sec == toc ? NULL | |
6803 | : sec->next == NULL ? toc | |
6804 | : sec->next == toc && toc->next ? toc->next | |
6805 | : sec->next)) | |
411e1bfb AM |
6806 | if (sec->has_tls_reloc && !bfd_is_abs_section (sec->output_section)) |
6807 | { | |
6808 | Elf_Internal_Rela *relstart, *rel, *relend; | |
6809 | int expecting_tls_get_addr; | |
30038c59 | 6810 | long toc_ref_index = 0; |
411e1bfb AM |
6811 | |
6812 | /* Read the relocations. */ | |
4ce794b7 | 6813 | relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL, |
45d6a902 | 6814 | info->keep_memory); |
411e1bfb AM |
6815 | if (relstart == NULL) |
6816 | return FALSE; | |
6817 | ||
6818 | expecting_tls_get_addr = 0; | |
6819 | relend = relstart + sec->reloc_count; | |
6820 | for (rel = relstart; rel < relend; rel++) | |
6821 | { | |
6822 | enum elf_ppc64_reloc_type r_type; | |
6823 | unsigned long r_symndx; | |
6824 | struct elf_link_hash_entry *h; | |
6825 | Elf_Internal_Sym *sym; | |
6826 | asection *sym_sec; | |
e7b938ca AM |
6827 | char *tls_mask; |
6828 | char tls_set, tls_clear, tls_type = 0; | |
411e1bfb | 6829 | bfd_vma value; |
951fd09b | 6830 | bfd_boolean ok_tprel, is_local; |
411e1bfb AM |
6831 | |
6832 | r_symndx = ELF64_R_SYM (rel->r_info); | |
e7b938ca | 6833 | if (!get_sym_h (&h, &sym, &sym_sec, &tls_mask, &locsyms, |
411e1bfb AM |
6834 | r_symndx, ibfd)) |
6835 | { | |
6836 | err_free_rel: | |
6837 | if (elf_section_data (sec)->relocs != relstart) | |
6838 | free (relstart); | |
30038c59 AM |
6839 | if (toc_ref != NULL) |
6840 | free (toc_ref); | |
411e1bfb AM |
6841 | if (locsyms != NULL |
6842 | && (elf_tdata (ibfd)->symtab_hdr.contents | |
6843 | != (unsigned char *) locsyms)) | |
6844 | free (locsyms); | |
6845 | return FALSE; | |
6846 | } | |
6847 | ||
6848 | if (h != NULL) | |
6849 | { | |
6850 | if (h->root.type != bfd_link_hash_defined | |
6851 | && h->root.type != bfd_link_hash_defweak) | |
6852 | continue; | |
6853 | value = h->root.u.def.value; | |
6854 | } | |
6855 | else | |
4025353c AM |
6856 | /* Symbols referenced by TLS relocs must be of type |
6857 | STT_TLS. So no need for .opd local sym adjust. */ | |
6858 | value = sym->st_value; | |
951fd09b | 6859 | |
411e1bfb | 6860 | ok_tprel = FALSE; |
951fd09b AM |
6861 | is_local = FALSE; |
6862 | if (h == NULL | |
f5385ebf | 6863 | || !h->def_dynamic) |
411e1bfb | 6864 | { |
951fd09b | 6865 | is_local = TRUE; |
411e1bfb AM |
6866 | value += sym_sec->output_offset; |
6867 | value += sym_sec->output_section->vma; | |
e1918d23 | 6868 | value -= htab->elf.tls_sec->vma; |
411e1bfb AM |
6869 | ok_tprel = (value + TP_OFFSET + ((bfd_vma) 1 << 31) |
6870 | < (bfd_vma) 1 << 32); | |
6871 | } | |
6872 | ||
4ce794b7 | 6873 | r_type = ELF64_R_TYPE (rel->r_info); |
411e1bfb AM |
6874 | switch (r_type) |
6875 | { | |
6876 | case R_PPC64_GOT_TLSLD16: | |
6877 | case R_PPC64_GOT_TLSLD16_LO: | |
6878 | case R_PPC64_GOT_TLSLD16_HI: | |
6879 | case R_PPC64_GOT_TLSLD16_HA: | |
951fd09b AM |
6880 | /* These relocs should never be against a symbol |
6881 | defined in a shared lib. Leave them alone if | |
6882 | that turns out to be the case. */ | |
e717da7e | 6883 | ppc64_tlsld_got (ibfd)->refcount -= 1; |
951fd09b AM |
6884 | if (!is_local) |
6885 | continue; | |
6886 | ||
951fd09b AM |
6887 | /* LD -> LE */ |
6888 | tls_set = 0; | |
6889 | tls_clear = TLS_LD; | |
e7b938ca | 6890 | tls_type = TLS_TLS | TLS_LD; |
411e1bfb AM |
6891 | expecting_tls_get_addr = 1; |
6892 | break; | |
6893 | ||
6894 | case R_PPC64_GOT_TLSGD16: | |
6895 | case R_PPC64_GOT_TLSGD16_LO: | |
6896 | case R_PPC64_GOT_TLSGD16_HI: | |
6897 | case R_PPC64_GOT_TLSGD16_HA: | |
951fd09b | 6898 | if (ok_tprel) |
411e1bfb AM |
6899 | /* GD -> LE */ |
6900 | tls_set = 0; | |
6901 | else | |
6902 | /* GD -> IE */ | |
951fd09b AM |
6903 | tls_set = TLS_TLS | TLS_TPRELGD; |
6904 | tls_clear = TLS_GD; | |
e7b938ca | 6905 | tls_type = TLS_TLS | TLS_GD; |
411e1bfb AM |
6906 | expecting_tls_get_addr = 1; |
6907 | break; | |
6908 | ||
6909 | case R_PPC64_GOT_TPREL16_DS: | |
6910 | case R_PPC64_GOT_TPREL16_LO_DS: | |
6911 | case R_PPC64_GOT_TPREL16_HI: | |
6912 | case R_PPC64_GOT_TPREL16_HA: | |
6913 | expecting_tls_get_addr = 0; | |
6914 | if (ok_tprel) | |
6915 | { | |
6916 | /* IE -> LE */ | |
6917 | tls_set = 0; | |
6918 | tls_clear = TLS_TPREL; | |
e7b938ca | 6919 | tls_type = TLS_TLS | TLS_TPREL; |
411e1bfb AM |
6920 | break; |
6921 | } | |
6922 | else | |
6923 | continue; | |
6924 | ||
6925 | case R_PPC64_REL14: | |
6926 | case R_PPC64_REL14_BRTAKEN: | |
6927 | case R_PPC64_REL14_BRNTAKEN: | |
6928 | case R_PPC64_REL24: | |
6929 | if (h != NULL | |
8387904d AM |
6930 | && (h == &htab->tls_get_addr->elf |
6931 | || h == &htab->tls_get_addr_fd->elf)) | |
411e1bfb AM |
6932 | { |
6933 | if (!expecting_tls_get_addr | |
6934 | && rel != relstart | |
6935 | && ((ELF64_R_TYPE (rel[-1].r_info) | |
6936 | == R_PPC64_TOC16) | |
6937 | || (ELF64_R_TYPE (rel[-1].r_info) | |
6938 | == R_PPC64_TOC16_LO))) | |
6939 | { | |
6940 | /* Check for toc tls entries. */ | |
6941 | char *toc_tls; | |
951fd09b | 6942 | int retval; |
411e1bfb | 6943 | |
0d4792f7 | 6944 | retval = get_tls_mask (&toc_tls, NULL, &locsyms, |
951fd09b AM |
6945 | rel - 1, ibfd); |
6946 | if (retval == 0) | |
411e1bfb | 6947 | goto err_free_rel; |
30038c59 AM |
6948 | if (retval > 1 && toc_tls != NULL) |
6949 | { | |
6950 | expecting_tls_get_addr = 1; | |
6951 | if (toc_ref != NULL) | |
6952 | toc_ref[toc_ref_index] = 1; | |
6953 | } | |
411e1bfb AM |
6954 | } |
6955 | ||
6956 | if (expecting_tls_get_addr) | |
6957 | { | |
6958 | struct plt_entry *ent; | |
6959 | for (ent = h->plt.plist; ent; ent = ent->next) | |
6960 | if (ent->addend == 0) | |
6961 | { | |
6962 | if (ent->plt.refcount > 0) | |
6963 | ent->plt.refcount -= 1; | |
6964 | break; | |
6965 | } | |
6966 | } | |
6967 | } | |
6968 | expecting_tls_get_addr = 0; | |
6969 | continue; | |
6970 | ||
30038c59 AM |
6971 | case R_PPC64_TOC16: |
6972 | case R_PPC64_TOC16_LO: | |
6973 | case R_PPC64_TLS: | |
6974 | expecting_tls_get_addr = 0; | |
6975 | if (sym_sec == toc && toc != NULL) | |
6976 | { | |
6977 | /* Mark this toc entry as referenced by a TLS | |
6978 | code sequence. We can do that now in the | |
6979 | case of R_PPC64_TLS, and after checking for | |
6980 | tls_get_addr for the TOC16 relocs. */ | |
6981 | if (toc_ref == NULL) | |
6982 | { | |
6983 | toc_ref = bfd_zmalloc (toc->size / 8); | |
6984 | if (toc_ref == NULL) | |
6985 | goto err_free_rel; | |
6986 | } | |
6987 | if (h != NULL) | |
6988 | value = h->root.u.def.value; | |
6989 | else | |
6990 | value = sym->st_value; | |
6991 | value += rel->r_addend; | |
6992 | BFD_ASSERT (value < toc->size && value % 8 == 0); | |
6993 | toc_ref_index = value / 8; | |
6994 | if (r_type == R_PPC64_TLS) | |
6995 | toc_ref[toc_ref_index] = 1; | |
6996 | } | |
6997 | continue; | |
6998 | ||
411e1bfb AM |
6999 | case R_PPC64_TPREL64: |
7000 | expecting_tls_get_addr = 0; | |
30038c59 AM |
7001 | if (sec != toc |
7002 | || toc_ref == NULL | |
7003 | || !toc_ref[rel->r_offset / 8]) | |
7004 | continue; | |
411e1bfb AM |
7005 | if (ok_tprel) |
7006 | { | |
7007 | /* IE -> LE */ | |
7008 | tls_set = TLS_EXPLICIT; | |
7009 | tls_clear = TLS_TPREL; | |
7010 | break; | |
7011 | } | |
7012 | else | |
7013 | continue; | |
7014 | ||
7015 | case R_PPC64_DTPMOD64: | |
7016 | expecting_tls_get_addr = 0; | |
30038c59 AM |
7017 | if (sec != toc |
7018 | || toc_ref == NULL | |
7019 | || !toc_ref[rel->r_offset / 8]) | |
7020 | continue; | |
951fd09b AM |
7021 | if (rel + 1 < relend |
7022 | && (rel[1].r_info | |
7023 | == ELF64_R_INFO (r_symndx, R_PPC64_DTPREL64)) | |
7024 | && rel[1].r_offset == rel->r_offset + 8) | |
411e1bfb | 7025 | { |
951fd09b | 7026 | if (ok_tprel) |
411e1bfb | 7027 | /* GD -> LE */ |
951fd09b | 7028 | tls_set = TLS_EXPLICIT | TLS_GD; |
411e1bfb AM |
7029 | else |
7030 | /* GD -> IE */ | |
951fd09b AM |
7031 | tls_set = TLS_EXPLICIT | TLS_GD | TLS_TPRELGD; |
7032 | tls_clear = TLS_GD; | |
411e1bfb AM |
7033 | } |
7034 | else | |
7035 | { | |
951fd09b AM |
7036 | if (!is_local) |
7037 | continue; | |
7038 | ||
7039 | /* LD -> LE */ | |
7040 | tls_set = TLS_EXPLICIT; | |
7041 | tls_clear = TLS_LD; | |
411e1bfb AM |
7042 | } |
7043 | break; | |
7044 | ||
7045 | default: | |
7046 | expecting_tls_get_addr = 0; | |
7047 | continue; | |
7048 | } | |
7049 | ||
7050 | if ((tls_set & TLS_EXPLICIT) == 0) | |
7051 | { | |
7052 | struct got_entry *ent; | |
7053 | ||
7054 | /* Adjust got entry for this reloc. */ | |
7055 | if (h != NULL) | |
7056 | ent = h->got.glist; | |
7057 | else | |
7058 | ent = elf_local_got_ents (ibfd)[r_symndx]; | |
7059 | ||
7060 | for (; ent != NULL; ent = ent->next) | |
7061 | if (ent->addend == rel->r_addend | |
e717da7e | 7062 | && ent->owner == ibfd |
e7b938ca | 7063 | && ent->tls_type == tls_type) |
411e1bfb AM |
7064 | break; |
7065 | if (ent == NULL) | |
7066 | abort (); | |
7067 | ||
7068 | if (tls_set == 0) | |
7069 | { | |
7070 | /* We managed to get rid of a got entry. */ | |
7071 | if (ent->got.refcount > 0) | |
7072 | ent->got.refcount -= 1; | |
7073 | } | |
411e1bfb | 7074 | } |
8c1d1bb8 | 7075 | else |
411e1bfb | 7076 | { |
8c1d1bb8 AM |
7077 | /* If we got rid of a DTPMOD/DTPREL reloc pair then |
7078 | we'll lose one or two dyn relocs. */ | |
7079 | if (!dec_dynrel_count (rel->r_info, sec, info, | |
7080 | NULL, h, sym_sec)) | |
7081 | return FALSE; | |
7082 | ||
7083 | if (tls_set == (TLS_EXPLICIT | TLS_GD)) | |
7084 | { | |
7085 | if (!dec_dynrel_count ((rel + 1)->r_info, sec, info, | |
7086 | NULL, h, sym_sec)) | |
7087 | return FALSE; | |
7088 | } | |
411e1bfb AM |
7089 | } |
7090 | ||
e7b938ca AM |
7091 | *tls_mask |= tls_set; |
7092 | *tls_mask &= ~tls_clear; | |
411e1bfb AM |
7093 | } |
7094 | ||
7095 | if (elf_section_data (sec)->relocs != relstart) | |
7096 | free (relstart); | |
7097 | } | |
7098 | ||
30038c59 AM |
7099 | if (toc_ref != NULL) |
7100 | free (toc_ref); | |
7101 | ||
411e1bfb AM |
7102 | if (locsyms != NULL |
7103 | && (elf_tdata (ibfd)->symtab_hdr.contents | |
7104 | != (unsigned char *) locsyms)) | |
6cdc0ccc AM |
7105 | { |
7106 | if (!info->keep_memory) | |
411e1bfb | 7107 | free (locsyms); |
6cdc0ccc | 7108 | else |
411e1bfb | 7109 | elf_tdata (ibfd)->symtab_hdr.contents = (unsigned char *) locsyms; |
6cdc0ccc | 7110 | } |
1e2f5b6e | 7111 | } |
b34976b6 | 7112 | return TRUE; |
1e2f5b6e | 7113 | } |
b34976b6 | 7114 | |
c5614fa4 AM |
7115 | /* Called via elf_link_hash_traverse from ppc64_elf_edit_toc to adjust |
7116 | the values of any global symbols in a toc section that has been | |
7117 | edited. Globals in toc sections should be a rarity, so this function | |
7118 | sets a flag if any are found in toc sections other than the one just | |
7119 | edited, so that futher hash table traversals can be avoided. */ | |
7120 | ||
7121 | struct adjust_toc_info | |
7122 | { | |
7123 | asection *toc; | |
7124 | unsigned long *skip; | |
7125 | bfd_boolean global_toc_syms; | |
7126 | }; | |
7127 | ||
7128 | static bfd_boolean | |
7129 | adjust_toc_syms (struct elf_link_hash_entry *h, void *inf) | |
7130 | { | |
7131 | struct ppc_link_hash_entry *eh; | |
7132 | struct adjust_toc_info *toc_inf = (struct adjust_toc_info *) inf; | |
7133 | ||
7134 | if (h->root.type == bfd_link_hash_indirect) | |
7135 | return TRUE; | |
7136 | ||
7137 | if (h->root.type == bfd_link_hash_warning) | |
7138 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
7139 | ||
7140 | if (h->root.type != bfd_link_hash_defined | |
7141 | && h->root.type != bfd_link_hash_defweak) | |
7142 | return TRUE; | |
7143 | ||
7144 | eh = (struct ppc_link_hash_entry *) h; | |
7145 | if (eh->adjust_done) | |
7146 | return TRUE; | |
7147 | ||
7148 | if (eh->elf.root.u.def.section == toc_inf->toc) | |
7149 | { | |
7150 | unsigned long skip = toc_inf->skip[eh->elf.root.u.def.value >> 3]; | |
7151 | if (skip != (unsigned long) -1) | |
7152 | eh->elf.root.u.def.value -= skip; | |
7153 | else | |
7154 | { | |
7155 | (*_bfd_error_handler) | |
7156 | (_("%s defined in removed toc entry"), eh->elf.root.root.string); | |
7157 | eh->elf.root.u.def.section = &bfd_abs_section; | |
7158 | eh->elf.root.u.def.value = 0; | |
7159 | } | |
7160 | eh->adjust_done = 1; | |
7161 | } | |
7162 | else if (strcmp (eh->elf.root.u.def.section->name, ".toc") == 0) | |
7163 | toc_inf->global_toc_syms = TRUE; | |
7164 | ||
7165 | return TRUE; | |
7166 | } | |
7167 | ||
7168 | /* Examine all relocs referencing .toc sections in order to remove | |
7169 | unused .toc entries. */ | |
7170 | ||
7171 | bfd_boolean | |
7172 | ppc64_elf_edit_toc (bfd *obfd ATTRIBUTE_UNUSED, struct bfd_link_info *info) | |
7173 | { | |
7174 | bfd *ibfd; | |
7175 | struct adjust_toc_info toc_inf; | |
7176 | ||
7177 | toc_inf.global_toc_syms = TRUE; | |
7178 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next) | |
7179 | { | |
7180 | asection *toc, *sec; | |
7181 | Elf_Internal_Shdr *symtab_hdr; | |
7182 | Elf_Internal_Sym *local_syms; | |
7183 | struct elf_link_hash_entry **sym_hashes; | |
92b7a70f | 7184 | Elf_Internal_Rela *relstart, *rel; |
c5614fa4 AM |
7185 | unsigned long *skip, *drop; |
7186 | unsigned char *used; | |
7187 | unsigned char *keep, last, some_unused; | |
7188 | ||
7189 | toc = bfd_get_section_by_name (ibfd, ".toc"); | |
7190 | if (toc == NULL | |
92b7a70f | 7191 | || toc->size == 0 |
c5614fa4 AM |
7192 | || toc->sec_info_type == ELF_INFO_TYPE_JUST_SYMS |
7193 | || elf_discarded_section (toc)) | |
7194 | continue; | |
7195 | ||
7196 | local_syms = NULL; | |
7197 | symtab_hdr = &elf_tdata (ibfd)->symtab_hdr; | |
7198 | sym_hashes = elf_sym_hashes (ibfd); | |
7199 | ||
7200 | /* Look at sections dropped from the final link. */ | |
7201 | skip = NULL; | |
7202 | relstart = NULL; | |
7203 | for (sec = ibfd->sections; sec != NULL; sec = sec->next) | |
7204 | { | |
7205 | if (sec->reloc_count == 0 | |
7206 | || !elf_discarded_section (sec) | |
7207 | || get_opd_info (sec) | |
7208 | || (sec->flags & SEC_ALLOC) == 0 | |
7209 | || (sec->flags & SEC_DEBUGGING) != 0) | |
7210 | continue; | |
7211 | ||
7212 | relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL, FALSE); | |
7213 | if (relstart == NULL) | |
7214 | goto error_ret; | |
7215 | ||
7216 | /* Run through the relocs to see which toc entries might be | |
7217 | unused. */ | |
7218 | for (rel = relstart; rel < relstart + sec->reloc_count; ++rel) | |
7219 | { | |
7220 | enum elf_ppc64_reloc_type r_type; | |
7221 | unsigned long r_symndx; | |
7222 | asection *sym_sec; | |
7223 | struct elf_link_hash_entry *h; | |
7224 | Elf_Internal_Sym *sym; | |
7225 | bfd_vma val; | |
7226 | ||
7227 | r_type = ELF64_R_TYPE (rel->r_info); | |
7228 | switch (r_type) | |
7229 | { | |
7230 | default: | |
7231 | continue; | |
7232 | ||
7233 | case R_PPC64_TOC16: | |
7234 | case R_PPC64_TOC16_LO: | |
7235 | case R_PPC64_TOC16_HI: | |
7236 | case R_PPC64_TOC16_HA: | |
7237 | case R_PPC64_TOC16_DS: | |
7238 | case R_PPC64_TOC16_LO_DS: | |
7239 | break; | |
7240 | } | |
7241 | ||
7242 | r_symndx = ELF64_R_SYM (rel->r_info); | |
7243 | if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, | |
7244 | r_symndx, ibfd)) | |
7245 | goto error_ret; | |
7246 | ||
7247 | if (sym_sec != toc) | |
7248 | continue; | |
7249 | ||
7250 | if (h != NULL) | |
7251 | val = h->root.u.def.value; | |
7252 | else | |
7253 | val = sym->st_value; | |
7254 | val += rel->r_addend; | |
7255 | ||
7256 | if (val >= toc->size) | |
7257 | continue; | |
7258 | ||
7259 | /* Anything in the toc ought to be aligned to 8 bytes. | |
7260 | If not, don't mark as unused. */ | |
7261 | if (val & 7) | |
7262 | continue; | |
7263 | ||
7264 | if (skip == NULL) | |
7265 | { | |
7266 | skip = bfd_zmalloc (sizeof (*skip) * (toc->size + 7) / 8); | |
7267 | if (skip == NULL) | |
7268 | goto error_ret; | |
7269 | } | |
7270 | ||
7271 | skip[val >> 3] = 1; | |
7272 | } | |
7273 | ||
7274 | if (elf_section_data (sec)->relocs != relstart) | |
7275 | free (relstart); | |
7276 | } | |
7277 | ||
7278 | if (skip == NULL) | |
7279 | continue; | |
7280 | ||
7281 | used = bfd_zmalloc (sizeof (*used) * (toc->size + 7) / 8); | |
7282 | if (used == NULL) | |
7283 | { | |
7284 | error_ret: | |
7285 | if (local_syms != NULL | |
7286 | && symtab_hdr->contents != (unsigned char *) local_syms) | |
7287 | free (local_syms); | |
7288 | if (sec != NULL | |
7289 | && relstart != NULL | |
7290 | && elf_section_data (sec)->relocs != relstart) | |
7291 | free (relstart); | |
7292 | if (skip != NULL) | |
7293 | free (skip); | |
7294 | return FALSE; | |
7295 | } | |
7296 | ||
30038c59 AM |
7297 | /* Now check all kept sections that might reference the toc. |
7298 | Check the toc itself last. */ | |
7299 | for (sec = (ibfd->sections == toc && toc->next ? toc->next | |
7300 | : ibfd->sections); | |
c5614fa4 | 7301 | sec != NULL; |
c5614fa4 | 7302 | sec = (sec == toc ? NULL |
c5614fa4 | 7303 | : sec->next == NULL ? toc |
30038c59 | 7304 | : sec->next == toc && toc->next ? toc->next |
c5614fa4 AM |
7305 | : sec->next)) |
7306 | { | |
7307 | int repeat; | |
7308 | ||
7309 | if (sec->reloc_count == 0 | |
7310 | || elf_discarded_section (sec) | |
7311 | || get_opd_info (sec) | |
7312 | || (sec->flags & SEC_ALLOC) == 0 | |
7313 | || (sec->flags & SEC_DEBUGGING) != 0) | |
7314 | continue; | |
7315 | ||
7316 | relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL, TRUE); | |
7317 | if (relstart == NULL) | |
7318 | goto error_ret; | |
7319 | ||
7320 | /* Mark toc entries referenced as used. */ | |
7321 | repeat = 0; | |
7322 | do | |
7323 | for (rel = relstart; rel < relstart + sec->reloc_count; ++rel) | |
7324 | { | |
7325 | enum elf_ppc64_reloc_type r_type; | |
7326 | unsigned long r_symndx; | |
7327 | asection *sym_sec; | |
7328 | struct elf_link_hash_entry *h; | |
7329 | Elf_Internal_Sym *sym; | |
7330 | bfd_vma val; | |
7331 | ||
7332 | r_type = ELF64_R_TYPE (rel->r_info); | |
7333 | switch (r_type) | |
7334 | { | |
7335 | case R_PPC64_TOC16: | |
7336 | case R_PPC64_TOC16_LO: | |
7337 | case R_PPC64_TOC16_HI: | |
7338 | case R_PPC64_TOC16_HA: | |
7339 | case R_PPC64_TOC16_DS: | |
7340 | case R_PPC64_TOC16_LO_DS: | |
7341 | /* In case we're taking addresses of toc entries. */ | |
7342 | case R_PPC64_ADDR64: | |
7343 | break; | |
7344 | ||
7345 | default: | |
7346 | continue; | |
7347 | } | |
7348 | ||
7349 | r_symndx = ELF64_R_SYM (rel->r_info); | |
7350 | if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, | |
7351 | r_symndx, ibfd)) | |
7352 | { | |
7353 | free (used); | |
7354 | goto error_ret; | |
7355 | } | |
7356 | ||
7357 | if (sym_sec != toc) | |
7358 | continue; | |
7359 | ||
7360 | if (h != NULL) | |
7361 | val = h->root.u.def.value; | |
7362 | else | |
7363 | val = sym->st_value; | |
7364 | val += rel->r_addend; | |
7365 | ||
7366 | if (val >= toc->size) | |
7367 | continue; | |
7368 | ||
7369 | /* For the toc section, we only mark as used if | |
7370 | this entry itself isn't unused. */ | |
7371 | if (sec == toc | |
7372 | && !used[val >> 3] | |
7373 | && (used[rel->r_offset >> 3] | |
7374 | || !skip[rel->r_offset >> 3])) | |
7375 | /* Do all the relocs again, to catch reference | |
7376 | chains. */ | |
7377 | repeat = 1; | |
7378 | ||
7379 | used[val >> 3] = 1; | |
7380 | } | |
7381 | while (repeat); | |
7382 | } | |
7383 | ||
7384 | /* Merge the used and skip arrays. Assume that TOC | |
7385 | doublewords not appearing as either used or unused belong | |
7386 | to to an entry more than one doubleword in size. */ | |
7387 | for (drop = skip, keep = used, last = 0, some_unused = 0; | |
7388 | drop < skip + (toc->size + 7) / 8; | |
7389 | ++drop, ++keep) | |
7390 | { | |
7391 | if (*keep) | |
7392 | { | |
7393 | *drop = 0; | |
7394 | last = 0; | |
7395 | } | |
7396 | else if (*drop) | |
7397 | { | |
7398 | some_unused = 1; | |
7399 | last = 1; | |
7400 | } | |
7401 | else | |
7402 | *drop = last; | |
7403 | } | |
7404 | ||
7405 | free (used); | |
7406 | ||
7407 | if (some_unused) | |
7408 | { | |
7409 | bfd_byte *contents, *src; | |
7410 | unsigned long off; | |
7411 | ||
7412 | /* Shuffle the toc contents, and at the same time convert the | |
7413 | skip array from booleans into offsets. */ | |
7414 | if (!bfd_malloc_and_get_section (ibfd, toc, &contents)) | |
7415 | goto error_ret; | |
7416 | ||
7417 | elf_section_data (toc)->this_hdr.contents = contents; | |
7418 | ||
7419 | for (src = contents, off = 0, drop = skip; | |
7420 | src < contents + toc->size; | |
7421 | src += 8, ++drop) | |
7422 | { | |
7423 | if (*drop) | |
7424 | { | |
7425 | *drop = (unsigned long) -1; | |
7426 | off += 8; | |
7427 | } | |
7428 | else if (off != 0) | |
7429 | { | |
7430 | *drop = off; | |
7431 | memcpy (src - off, src, 8); | |
7432 | } | |
7433 | } | |
7434 | toc->rawsize = toc->size; | |
7435 | toc->size = src - contents - off; | |
7436 | ||
92b7a70f AM |
7437 | if (toc->reloc_count != 0) |
7438 | { | |
7439 | Elf_Internal_Rela *wrel; | |
7440 | bfd_size_type sz; | |
c5614fa4 | 7441 | |
92b7a70f AM |
7442 | /* Read toc relocs. */ |
7443 | relstart = _bfd_elf_link_read_relocs (ibfd, toc, NULL, NULL, | |
7444 | TRUE); | |
7445 | if (relstart == NULL) | |
7446 | goto error_ret; | |
7447 | ||
7448 | /* Remove unused toc relocs, and adjust those we keep. */ | |
7449 | wrel = relstart; | |
7450 | for (rel = relstart; rel < relstart + toc->reloc_count; ++rel) | |
7451 | if (skip[rel->r_offset >> 3] != (unsigned long) -1) | |
7452 | { | |
7453 | wrel->r_offset = rel->r_offset - skip[rel->r_offset >> 3]; | |
7454 | wrel->r_info = rel->r_info; | |
7455 | wrel->r_addend = rel->r_addend; | |
7456 | ++wrel; | |
7457 | } | |
8c1d1bb8 AM |
7458 | else if (!dec_dynrel_count (rel->r_info, toc, info, |
7459 | &local_syms, NULL, NULL)) | |
7460 | goto error_ret; | |
35090471 | 7461 | |
92b7a70f AM |
7462 | toc->reloc_count = wrel - relstart; |
7463 | sz = elf_section_data (toc)->rel_hdr.sh_entsize; | |
7464 | elf_section_data (toc)->rel_hdr.sh_size = toc->reloc_count * sz; | |
7465 | BFD_ASSERT (elf_section_data (toc)->rel_hdr2 == NULL); | |
7466 | } | |
c5614fa4 AM |
7467 | |
7468 | /* Adjust addends for relocs against the toc section sym. */ | |
7469 | for (sec = ibfd->sections; sec != NULL; sec = sec->next) | |
7470 | { | |
7471 | if (sec->reloc_count == 0 | |
7472 | || elf_discarded_section (sec)) | |
7473 | continue; | |
7474 | ||
7475 | relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL, | |
7476 | TRUE); | |
7477 | if (relstart == NULL) | |
7478 | goto error_ret; | |
7479 | ||
7480 | for (rel = relstart; rel < relstart + sec->reloc_count; ++rel) | |
7481 | { | |
7482 | enum elf_ppc64_reloc_type r_type; | |
7483 | unsigned long r_symndx; | |
7484 | asection *sym_sec; | |
7485 | struct elf_link_hash_entry *h; | |
7486 | Elf_Internal_Sym *sym; | |
7487 | ||
7488 | r_type = ELF64_R_TYPE (rel->r_info); | |
7489 | switch (r_type) | |
7490 | { | |
7491 | default: | |
7492 | continue; | |
7493 | ||
7494 | case R_PPC64_TOC16: | |
7495 | case R_PPC64_TOC16_LO: | |
7496 | case R_PPC64_TOC16_HI: | |
7497 | case R_PPC64_TOC16_HA: | |
7498 | case R_PPC64_TOC16_DS: | |
7499 | case R_PPC64_TOC16_LO_DS: | |
7500 | case R_PPC64_ADDR64: | |
7501 | break; | |
7502 | } | |
7503 | ||
7504 | r_symndx = ELF64_R_SYM (rel->r_info); | |
7505 | if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, | |
7506 | r_symndx, ibfd)) | |
7507 | goto error_ret; | |
7508 | ||
7509 | if (sym_sec != toc || h != NULL || sym->st_value != 0) | |
7510 | continue; | |
7511 | ||
7512 | rel->r_addend -= skip[rel->r_addend >> 3]; | |
7513 | } | |
7514 | } | |
7515 | ||
7516 | /* We shouldn't have local or global symbols defined in the TOC, | |
7517 | but handle them anyway. */ | |
7518 | if (local_syms != NULL) | |
7519 | { | |
7520 | Elf_Internal_Sym *sym; | |
7521 | ||
7522 | for (sym = local_syms; | |
7523 | sym < local_syms + symtab_hdr->sh_info; | |
7524 | ++sym) | |
7525 | if (sym->st_shndx != SHN_UNDEF | |
7526 | && (sym->st_shndx < SHN_LORESERVE | |
7527 | || sym->st_shndx > SHN_HIRESERVE) | |
7528 | && sym->st_value != 0 | |
7529 | && bfd_section_from_elf_index (ibfd, sym->st_shndx) == toc) | |
7530 | { | |
7531 | if (skip[sym->st_value >> 3] != (unsigned long) -1) | |
7532 | sym->st_value -= skip[sym->st_value >> 3]; | |
7533 | else | |
7534 | { | |
7535 | (*_bfd_error_handler) | |
7536 | (_("%s defined in removed toc entry"), | |
26c61ae5 L |
7537 | bfd_elf_sym_name (ibfd, symtab_hdr, sym, |
7538 | NULL)); | |
c5614fa4 AM |
7539 | sym->st_value = 0; |
7540 | sym->st_shndx = SHN_ABS; | |
7541 | } | |
7542 | symtab_hdr->contents = (unsigned char *) local_syms; | |
7543 | } | |
7544 | } | |
7545 | ||
7546 | /* Finally, adjust any global syms defined in the toc. */ | |
7547 | if (toc_inf.global_toc_syms) | |
7548 | { | |
7549 | toc_inf.toc = toc; | |
7550 | toc_inf.skip = skip; | |
7551 | toc_inf.global_toc_syms = FALSE; | |
7552 | elf_link_hash_traverse (elf_hash_table (info), adjust_toc_syms, | |
7553 | &toc_inf); | |
7554 | } | |
7555 | } | |
7556 | ||
7557 | if (local_syms != NULL | |
7558 | && symtab_hdr->contents != (unsigned char *) local_syms) | |
7559 | { | |
7560 | if (!info->keep_memory) | |
7561 | free (local_syms); | |
7562 | else | |
7563 | symtab_hdr->contents = (unsigned char *) local_syms; | |
7564 | } | |
7565 | free (skip); | |
7566 | } | |
7567 | ||
7568 | return TRUE; | |
7569 | } | |
7570 | ||
65f38f15 AM |
7571 | /* Allocate space in .plt, .got and associated reloc sections for |
7572 | dynamic relocs. */ | |
5bd4f169 | 7573 | |
b34976b6 | 7574 | static bfd_boolean |
4ce794b7 | 7575 | allocate_dynrelocs (struct elf_link_hash_entry *h, void *inf) |
5bd4f169 | 7576 | { |
65f38f15 AM |
7577 | struct bfd_link_info *info; |
7578 | struct ppc_link_hash_table *htab; | |
5bd4f169 | 7579 | asection *s; |
65f38f15 AM |
7580 | struct ppc_link_hash_entry *eh; |
7581 | struct ppc_dyn_relocs *p; | |
411e1bfb | 7582 | struct got_entry *gent; |
5bd4f169 | 7583 | |
e92d460e | 7584 | if (h->root.type == bfd_link_hash_indirect) |
b34976b6 | 7585 | return TRUE; |
5bd4f169 | 7586 | |
e92d460e AM |
7587 | if (h->root.type == bfd_link_hash_warning) |
7588 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
7589 | ||
65f38f15 AM |
7590 | info = (struct bfd_link_info *) inf; |
7591 | htab = ppc_hash_table (info); | |
5bd4f169 | 7592 | |
65f38f15 | 7593 | if (htab->elf.dynamic_sections_created |
411e1bfb | 7594 | && h->dynindx != -1 |
9c7a29a3 | 7595 | && WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, info->shared, h)) |
5bd4f169 | 7596 | { |
411e1bfb AM |
7597 | struct plt_entry *pent; |
7598 | bfd_boolean doneone = FALSE; | |
7599 | for (pent = h->plt.plist; pent != NULL; pent = pent->next) | |
7600 | if (pent->plt.refcount > 0) | |
7601 | { | |
411e1bfb AM |
7602 | /* If this is the first .plt entry, make room for the special |
7603 | first entry. */ | |
4ce794b7 | 7604 | s = htab->plt; |
eea6121a AM |
7605 | if (s->size == 0) |
7606 | s->size += PLT_INITIAL_ENTRY_SIZE; | |
411e1bfb | 7607 | |
eea6121a | 7608 | pent->plt.offset = s->size; |
411e1bfb AM |
7609 | |
7610 | /* Make room for this entry. */ | |
eea6121a | 7611 | s->size += PLT_ENTRY_SIZE; |
411e1bfb AM |
7612 | |
7613 | /* Make room for the .glink code. */ | |
4ce794b7 | 7614 | s = htab->glink; |
eea6121a AM |
7615 | if (s->size == 0) |
7616 | s->size += GLINK_CALL_STUB_SIZE; | |
411e1bfb | 7617 | /* We need bigger stubs past index 32767. */ |
eea6121a AM |
7618 | if (s->size >= GLINK_CALL_STUB_SIZE + 32768*2*4) |
7619 | s->size += 4; | |
7620 | s->size += 2*4; | |
411e1bfb AM |
7621 | |
7622 | /* We also need to make an entry in the .rela.plt section. */ | |
4ce794b7 | 7623 | s = htab->relplt; |
eea6121a | 7624 | s->size += sizeof (Elf64_External_Rela); |
411e1bfb AM |
7625 | doneone = TRUE; |
7626 | } | |
7627 | else | |
7628 | pent->plt.offset = (bfd_vma) -1; | |
7629 | if (!doneone) | |
65f38f15 | 7630 | { |
411e1bfb | 7631 | h->plt.plist = NULL; |
f5385ebf | 7632 | h->needs_plt = 0; |
65f38f15 AM |
7633 | } |
7634 | } | |
7635 | else | |
7636 | { | |
411e1bfb | 7637 | h->plt.plist = NULL; |
f5385ebf | 7638 | h->needs_plt = 0; |
65f38f15 AM |
7639 | } |
7640 | ||
951fd09b AM |
7641 | eh = (struct ppc_link_hash_entry *) h; |
7642 | /* Run through the TLS GD got entries first if we're changing them | |
7643 | to TPREL. */ | |
e7b938ca | 7644 | if ((eh->tls_mask & TLS_TPRELGD) != 0) |
951fd09b AM |
7645 | for (gent = h->got.glist; gent != NULL; gent = gent->next) |
7646 | if (gent->got.refcount > 0 | |
7647 | && (gent->tls_type & TLS_GD) != 0) | |
7648 | { | |
7649 | /* This was a GD entry that has been converted to TPREL. If | |
7650 | there happens to be a TPREL entry we can use that one. */ | |
7651 | struct got_entry *ent; | |
7652 | for (ent = h->got.glist; ent != NULL; ent = ent->next) | |
7653 | if (ent->got.refcount > 0 | |
7654 | && (ent->tls_type & TLS_TPREL) != 0 | |
e717da7e AM |
7655 | && ent->addend == gent->addend |
7656 | && ent->owner == gent->owner) | |
951fd09b AM |
7657 | { |
7658 | gent->got.refcount = 0; | |
7659 | break; | |
7660 | } | |
7661 | ||
7662 | /* If not, then we'll be using our own TPREL entry. */ | |
7663 | if (gent->got.refcount != 0) | |
7664 | gent->tls_type = TLS_TLS | TLS_TPREL; | |
7665 | } | |
7666 | ||
411e1bfb AM |
7667 | for (gent = h->got.glist; gent != NULL; gent = gent->next) |
7668 | if (gent->got.refcount > 0) | |
7669 | { | |
951fd09b AM |
7670 | bfd_boolean dyn; |
7671 | ||
411e1bfb | 7672 | /* Make sure this symbol is output as a dynamic symbol. |
951fd09b AM |
7673 | Undefined weak syms won't yet be marked as dynamic, |
7674 | nor will all TLS symbols. */ | |
411e1bfb | 7675 | if (h->dynindx == -1 |
f5385ebf | 7676 | && !h->forced_local) |
411e1bfb | 7677 | { |
c152c796 | 7678 | if (! bfd_elf_link_record_dynamic_symbol (info, h)) |
411e1bfb AM |
7679 | return FALSE; |
7680 | } | |
65f38f15 | 7681 | |
d881513a | 7682 | if ((gent->tls_type & TLS_LD) != 0 |
f5385ebf | 7683 | && !h->def_dynamic) |
411e1bfb | 7684 | { |
e717da7e | 7685 | gent->got.offset = ppc64_tlsld_got (gent->owner)->offset; |
951fd09b | 7686 | continue; |
411e1bfb | 7687 | } |
951fd09b | 7688 | |
e717da7e | 7689 | s = ppc64_elf_tdata (gent->owner)->got; |
eea6121a AM |
7690 | gent->got.offset = s->size; |
7691 | s->size | |
d881513a | 7692 | += (gent->tls_type & eh->tls_mask & (TLS_GD | TLS_LD)) ? 16 : 8; |
951fd09b | 7693 | dyn = htab->elf.dynamic_sections_created; |
4e795f50 AM |
7694 | if ((info->shared |
7695 | || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 0, h)) | |
7696 | && (ELF_ST_VISIBILITY (h->other) == STV_DEFAULT | |
7697 | || h->root.type != bfd_link_hash_undefweak)) | |
eea6121a | 7698 | ppc64_elf_tdata (gent->owner)->relgot->size |
e7b938ca | 7699 | += (gent->tls_type & eh->tls_mask & TLS_GD |
951fd09b AM |
7700 | ? 2 * sizeof (Elf64_External_Rela) |
7701 | : sizeof (Elf64_External_Rela)); | |
411e1bfb AM |
7702 | } |
7703 | else | |
7704 | gent->got.offset = (bfd_vma) -1; | |
65f38f15 | 7705 | |
65f38f15 | 7706 | if (eh->dyn_relocs == NULL) |
b34976b6 | 7707 | return TRUE; |
65f38f15 AM |
7708 | |
7709 | /* In the shared -Bsymbolic case, discard space allocated for | |
7710 | dynamic pc-relative relocs against symbols which turn out to be | |
7711 | defined in regular objects. For the normal shared case, discard | |
7712 | space for relocs that have become local due to symbol visibility | |
7713 | changes. */ | |
7714 | ||
7715 | if (info->shared) | |
7716 | { | |
9c7a29a3 AM |
7717 | /* Relocs that use pc_count are those that appear on a call insn, |
7718 | or certain REL relocs (see MUST_BE_DYN_RELOC) that can be | |
7719 | generated via assembly. We want calls to protected symbols to | |
7720 | resolve directly to the function rather than going via the plt. | |
7721 | If people want function pointer comparisons to work as expected | |
7722 | then they should avoid writing weird assembly. */ | |
09695f56 | 7723 | if (SYMBOL_CALLS_LOCAL (info, h)) |
65f38f15 AM |
7724 | { |
7725 | struct ppc_dyn_relocs **pp; | |
7726 | ||
7727 | for (pp = &eh->dyn_relocs; (p = *pp) != NULL; ) | |
5bd4f169 | 7728 | { |
65f38f15 AM |
7729 | p->count -= p->pc_count; |
7730 | p->pc_count = 0; | |
7731 | if (p->count == 0) | |
7732 | *pp = p->next; | |
7733 | else | |
7734 | pp = &p->next; | |
5bd4f169 | 7735 | } |
65f38f15 | 7736 | } |
4e795f50 AM |
7737 | |
7738 | /* Also discard relocs on undefined weak syms with non-default | |
7739 | visibility. */ | |
cab87ef9 AM |
7740 | if (eh->dyn_relocs != NULL |
7741 | && h->root.type == bfd_link_hash_undefweak) | |
dfbb6ac9 AM |
7742 | { |
7743 | if (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT) | |
7744 | eh->dyn_relocs = NULL; | |
7745 | ||
7746 | /* Make sure this symbol is output as a dynamic symbol. | |
7747 | Undefined weak syms won't yet be marked as dynamic. */ | |
7748 | else if (h->dynindx == -1 | |
7749 | && !h->forced_local) | |
7750 | { | |
7751 | if (! bfd_elf_link_record_dynamic_symbol (info, h)) | |
7752 | return FALSE; | |
7753 | } | |
7754 | } | |
65f38f15 | 7755 | } |
f4656909 | 7756 | else if (ELIMINATE_COPY_RELOCS) |
65f38f15 AM |
7757 | { |
7758 | /* For the non-shared case, discard space for relocs against | |
7759 | symbols which turn out to need copy relocs or are not | |
7760 | dynamic. */ | |
7761 | ||
f5385ebf AM |
7762 | if (!h->non_got_ref |
7763 | && h->def_dynamic | |
7764 | && !h->def_regular) | |
65f38f15 AM |
7765 | { |
7766 | /* Make sure this symbol is output as a dynamic symbol. | |
7767 | Undefined weak syms won't yet be marked as dynamic. */ | |
7768 | if (h->dynindx == -1 | |
f5385ebf | 7769 | && !h->forced_local) |
65f38f15 | 7770 | { |
c152c796 | 7771 | if (! bfd_elf_link_record_dynamic_symbol (info, h)) |
b34976b6 | 7772 | return FALSE; |
65f38f15 AM |
7773 | } |
7774 | ||
7775 | /* If that succeeded, we know we'll be keeping all the | |
7776 | relocs. */ | |
7777 | if (h->dynindx != -1) | |
7778 | goto keep; | |
7779 | } | |
7780 | ||
7781 | eh->dyn_relocs = NULL; | |
7782 | ||
ec338859 | 7783 | keep: ; |
65f38f15 AM |
7784 | } |
7785 | ||
7786 | /* Finally, allocate space. */ | |
7787 | for (p = eh->dyn_relocs; p != NULL; p = p->next) | |
7788 | { | |
7789 | asection *sreloc = elf_section_data (p->sec)->sreloc; | |
eea6121a | 7790 | sreloc->size += p->count * sizeof (Elf64_External_Rela); |
65f38f15 AM |
7791 | } |
7792 | ||
b34976b6 | 7793 | return TRUE; |
65f38f15 AM |
7794 | } |
7795 | ||
7796 | /* Find any dynamic relocs that apply to read-only sections. */ | |
7797 | ||
b34976b6 | 7798 | static bfd_boolean |
4ce794b7 | 7799 | readonly_dynrelocs (struct elf_link_hash_entry *h, void *inf) |
65f38f15 AM |
7800 | { |
7801 | struct ppc_link_hash_entry *eh; | |
7802 | struct ppc_dyn_relocs *p; | |
7803 | ||
e92d460e AM |
7804 | if (h->root.type == bfd_link_hash_warning) |
7805 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
7806 | ||
65f38f15 AM |
7807 | eh = (struct ppc_link_hash_entry *) h; |
7808 | for (p = eh->dyn_relocs; p != NULL; p = p->next) | |
7809 | { | |
7810 | asection *s = p->sec->output_section; | |
7811 | ||
7812 | if (s != NULL && (s->flags & SEC_READONLY) != 0) | |
7813 | { | |
4ce794b7 | 7814 | struct bfd_link_info *info = inf; |
65f38f15 AM |
7815 | |
7816 | info->flags |= DF_TEXTREL; | |
7817 | ||
7818 | /* Not an error, just cut short the traversal. */ | |
b34976b6 | 7819 | return FALSE; |
65f38f15 AM |
7820 | } |
7821 | } | |
b34976b6 | 7822 | return TRUE; |
65f38f15 AM |
7823 | } |
7824 | ||
7825 | /* Set the sizes of the dynamic sections. */ | |
7826 | ||
b34976b6 | 7827 | static bfd_boolean |
4ce794b7 AM |
7828 | ppc64_elf_size_dynamic_sections (bfd *output_bfd ATTRIBUTE_UNUSED, |
7829 | struct bfd_link_info *info) | |
65f38f15 AM |
7830 | { |
7831 | struct ppc_link_hash_table *htab; | |
7832 | bfd *dynobj; | |
7833 | asection *s; | |
b34976b6 | 7834 | bfd_boolean relocs; |
65f38f15 AM |
7835 | bfd *ibfd; |
7836 | ||
7837 | htab = ppc_hash_table (info); | |
7838 | dynobj = htab->elf.dynobj; | |
7839 | if (dynobj == NULL) | |
7840 | abort (); | |
7841 | ||
7842 | if (htab->elf.dynamic_sections_created) | |
7843 | { | |
7844 | /* Set the contents of the .interp section to the interpreter. */ | |
36af4a4e | 7845 | if (info->executable) |
65f38f15 AM |
7846 | { |
7847 | s = bfd_get_section_by_name (dynobj, ".interp"); | |
7848 | if (s == NULL) | |
7849 | abort (); | |
eea6121a | 7850 | s->size = sizeof ELF_DYNAMIC_INTERPRETER; |
65f38f15 AM |
7851 | s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER; |
7852 | } | |
7853 | } | |
7854 | ||
7855 | /* Set up .got offsets for local syms, and space for local dynamic | |
7856 | relocs. */ | |
7857 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next) | |
7858 | { | |
411e1bfb AM |
7859 | struct got_entry **lgot_ents; |
7860 | struct got_entry **end_lgot_ents; | |
e7b938ca | 7861 | char *lgot_masks; |
65f38f15 AM |
7862 | bfd_size_type locsymcount; |
7863 | Elf_Internal_Shdr *symtab_hdr; | |
7864 | asection *srel; | |
7865 | ||
ee75fd95 | 7866 | if (!is_ppc64_elf_target (ibfd->xvec)) |
65f38f15 AM |
7867 | continue; |
7868 | ||
e717da7e AM |
7869 | if (ppc64_tlsld_got (ibfd)->refcount > 0) |
7870 | { | |
7871 | s = ppc64_elf_tdata (ibfd)->got; | |
eea6121a AM |
7872 | ppc64_tlsld_got (ibfd)->offset = s->size; |
7873 | s->size += 16; | |
e717da7e AM |
7874 | if (info->shared) |
7875 | { | |
7876 | srel = ppc64_elf_tdata (ibfd)->relgot; | |
eea6121a | 7877 | srel->size += sizeof (Elf64_External_Rela); |
e717da7e AM |
7878 | } |
7879 | } | |
7880 | else | |
7881 | ppc64_tlsld_got (ibfd)->offset = (bfd_vma) -1; | |
7882 | ||
65f38f15 AM |
7883 | for (s = ibfd->sections; s != NULL; s = s->next) |
7884 | { | |
ec338859 | 7885 | struct ppc_dyn_relocs *p; |
65f38f15 | 7886 | |
6edfbbad | 7887 | for (p = elf_section_data (s)->local_dynrel; p != NULL; p = p->next) |
65f38f15 | 7888 | { |
ec338859 AM |
7889 | if (!bfd_is_abs_section (p->sec) |
7890 | && bfd_is_abs_section (p->sec->output_section)) | |
7891 | { | |
7892 | /* Input section has been discarded, either because | |
7893 | it is a copy of a linkonce section or due to | |
7894 | linker script /DISCARD/, so we'll be discarding | |
7895 | the relocs too. */ | |
7896 | } | |
248866a8 | 7897 | else if (p->count != 0) |
ec338859 AM |
7898 | { |
7899 | srel = elf_section_data (p->sec)->sreloc; | |
eea6121a | 7900 | srel->size += p->count * sizeof (Elf64_External_Rela); |
248866a8 AM |
7901 | if ((p->sec->output_section->flags & SEC_READONLY) != 0) |
7902 | info->flags |= DF_TEXTREL; | |
ec338859 | 7903 | } |
65f38f15 AM |
7904 | } |
7905 | } | |
7906 | ||
411e1bfb AM |
7907 | lgot_ents = elf_local_got_ents (ibfd); |
7908 | if (!lgot_ents) | |
65f38f15 AM |
7909 | continue; |
7910 | ||
7911 | symtab_hdr = &elf_tdata (ibfd)->symtab_hdr; | |
7912 | locsymcount = symtab_hdr->sh_info; | |
411e1bfb | 7913 | end_lgot_ents = lgot_ents + locsymcount; |
e7b938ca | 7914 | lgot_masks = (char *) end_lgot_ents; |
e717da7e AM |
7915 | s = ppc64_elf_tdata (ibfd)->got; |
7916 | srel = ppc64_elf_tdata (ibfd)->relgot; | |
e7b938ca | 7917 | for (; lgot_ents < end_lgot_ents; ++lgot_ents, ++lgot_masks) |
65f38f15 | 7918 | { |
411e1bfb AM |
7919 | struct got_entry *ent; |
7920 | ||
7921 | for (ent = *lgot_ents; ent != NULL; ent = ent->next) | |
7922 | if (ent->got.refcount > 0) | |
7923 | { | |
e7b938ca | 7924 | if ((ent->tls_type & *lgot_masks & TLS_LD) != 0) |
411e1bfb | 7925 | { |
e717da7e | 7926 | if (ppc64_tlsld_got (ibfd)->offset == (bfd_vma) -1) |
411e1bfb | 7927 | { |
eea6121a AM |
7928 | ppc64_tlsld_got (ibfd)->offset = s->size; |
7929 | s->size += 16; | |
411e1bfb | 7930 | if (info->shared) |
eea6121a | 7931 | srel->size += sizeof (Elf64_External_Rela); |
411e1bfb | 7932 | } |
e717da7e | 7933 | ent->got.offset = ppc64_tlsld_got (ibfd)->offset; |
411e1bfb AM |
7934 | } |
7935 | else | |
7936 | { | |
eea6121a | 7937 | ent->got.offset = s->size; |
e7b938ca | 7938 | if ((ent->tls_type & *lgot_masks & TLS_GD) != 0) |
411e1bfb | 7939 | { |
eea6121a | 7940 | s->size += 16; |
411e1bfb | 7941 | if (info->shared) |
eea6121a | 7942 | srel->size += 2 * sizeof (Elf64_External_Rela); |
411e1bfb AM |
7943 | } |
7944 | else | |
7945 | { | |
eea6121a | 7946 | s->size += 8; |
411e1bfb | 7947 | if (info->shared) |
eea6121a | 7948 | srel->size += sizeof (Elf64_External_Rela); |
411e1bfb AM |
7949 | } |
7950 | } | |
7951 | } | |
7952 | else | |
7953 | ent->got.offset = (bfd_vma) -1; | |
65f38f15 AM |
7954 | } |
7955 | } | |
7956 | ||
7957 | /* Allocate global sym .plt and .got entries, and space for global | |
7958 | sym dynamic relocs. */ | |
4ce794b7 | 7959 | elf_link_hash_traverse (&htab->elf, allocate_dynrelocs, info); |
65f38f15 AM |
7960 | |
7961 | /* We now have determined the sizes of the various dynamic sections. | |
7962 | Allocate memory for them. */ | |
b34976b6 | 7963 | relocs = FALSE; |
65f38f15 AM |
7964 | for (s = dynobj->sections; s != NULL; s = s->next) |
7965 | { | |
7966 | if ((s->flags & SEC_LINKER_CREATED) == 0) | |
7967 | continue; | |
7968 | ||
4ce794b7 | 7969 | if (s == htab->brlt || s == htab->relbrlt) |
721956f4 AM |
7970 | /* These haven't been allocated yet; don't strip. */ |
7971 | continue; | |
e717da7e AM |
7972 | else if (s == htab->got |
7973 | || s == htab->plt | |
c456f082 AM |
7974 | || s == htab->glink |
7975 | || s == htab->dynbss) | |
65f38f15 AM |
7976 | { |
7977 | /* Strip this section if we don't need it; see the | |
7978 | comment below. */ | |
5bd4f169 | 7979 | } |
0112cd26 | 7980 | else if (CONST_STRNEQ (bfd_get_section_name (dynobj, s), ".rela")) |
5bd4f169 | 7981 | { |
c456f082 | 7982 | if (s->size != 0) |
5bd4f169 | 7983 | { |
4ce794b7 | 7984 | if (s != htab->relplt) |
b34976b6 | 7985 | relocs = TRUE; |
5bd4f169 AM |
7986 | |
7987 | /* We use the reloc_count field as a counter if we need | |
7988 | to copy relocs into the output file. */ | |
7989 | s->reloc_count = 0; | |
7990 | } | |
7991 | } | |
65f38f15 | 7992 | else |
5bd4f169 AM |
7993 | { |
7994 | /* It's not one of our sections, so don't allocate space. */ | |
7995 | continue; | |
7996 | } | |
7997 | ||
eea6121a | 7998 | if (s->size == 0) |
5bd4f169 | 7999 | { |
c456f082 AM |
8000 | /* If we don't need this section, strip it from the |
8001 | output file. This is mostly to handle .rela.bss and | |
8002 | .rela.plt. We must create both sections in | |
8003 | create_dynamic_sections, because they must be created | |
8004 | before the linker maps input sections to output | |
8005 | sections. The linker does that before | |
8006 | adjust_dynamic_symbol is called, and it is that | |
8007 | function which decides whether anything needs to go | |
8008 | into these sections. */ | |
8423293d | 8009 | s->flags |= SEC_EXCLUDE; |
5bd4f169 AM |
8010 | continue; |
8011 | } | |
8012 | ||
c456f082 | 8013 | if ((s->flags & SEC_HAS_CONTENTS) == 0) |
5f333394 AM |
8014 | continue; |
8015 | ||
65f38f15 AM |
8016 | /* Allocate memory for the section contents. We use bfd_zalloc |
8017 | here in case unused entries are not reclaimed before the | |
8018 | section's contents are written out. This should not happen, | |
411e1bfb AM |
8019 | but this way if it does we get a R_PPC64_NONE reloc in .rela |
8020 | sections instead of garbage. | |
8021 | We also rely on the section contents being zero when writing | |
8022 | the GOT. */ | |
eea6121a | 8023 | s->contents = bfd_zalloc (dynobj, s->size); |
65f38f15 | 8024 | if (s->contents == NULL) |
b34976b6 | 8025 | return FALSE; |
5bd4f169 AM |
8026 | } |
8027 | ||
e717da7e AM |
8028 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next) |
8029 | { | |
ee75fd95 | 8030 | if (!is_ppc64_elf_target (ibfd->xvec)) |
7b53ace3 AM |
8031 | continue; |
8032 | ||
e717da7e AM |
8033 | s = ppc64_elf_tdata (ibfd)->got; |
8034 | if (s != NULL && s != htab->got) | |
8035 | { | |
eea6121a | 8036 | if (s->size == 0) |
8423293d | 8037 | s->flags |= SEC_EXCLUDE; |
e717da7e AM |
8038 | else |
8039 | { | |
eea6121a | 8040 | s->contents = bfd_zalloc (ibfd, s->size); |
e717da7e AM |
8041 | if (s->contents == NULL) |
8042 | return FALSE; | |
8043 | } | |
8044 | } | |
8045 | s = ppc64_elf_tdata (ibfd)->relgot; | |
8046 | if (s != NULL) | |
8047 | { | |
eea6121a | 8048 | if (s->size == 0) |
8423293d | 8049 | s->flags |= SEC_EXCLUDE; |
e717da7e AM |
8050 | else |
8051 | { | |
eea6121a | 8052 | s->contents = bfd_zalloc (ibfd, s->size); |
e717da7e AM |
8053 | if (s->contents == NULL) |
8054 | return FALSE; | |
8055 | relocs = TRUE; | |
8056 | s->reloc_count = 0; | |
8057 | } | |
8058 | } | |
8059 | } | |
8060 | ||
e86ce104 | 8061 | if (htab->elf.dynamic_sections_created) |
5bd4f169 AM |
8062 | { |
8063 | /* Add some entries to the .dynamic section. We fill in the | |
8064 | values later, in ppc64_elf_finish_dynamic_sections, but we | |
8065 | must add the entries now so that we get the correct size for | |
8066 | the .dynamic section. The DT_DEBUG entry is filled in by the | |
8067 | dynamic linker and used by the debugger. */ | |
dc810e39 | 8068 | #define add_dynamic_entry(TAG, VAL) \ |
5a580b3a | 8069 | _bfd_elf_add_dynamic_entry (info, TAG, VAL) |
dc810e39 | 8070 | |
36af4a4e | 8071 | if (info->executable) |
5bd4f169 | 8072 | { |
dc810e39 | 8073 | if (!add_dynamic_entry (DT_DEBUG, 0)) |
b34976b6 | 8074 | return FALSE; |
5bd4f169 AM |
8075 | } |
8076 | ||
eea6121a | 8077 | if (htab->plt != NULL && htab->plt->size != 0) |
5bd4f169 | 8078 | { |
dc810e39 AM |
8079 | if (!add_dynamic_entry (DT_PLTGOT, 0) |
8080 | || !add_dynamic_entry (DT_PLTRELSZ, 0) | |
8081 | || !add_dynamic_entry (DT_PLTREL, DT_RELA) | |
5d1634d7 AM |
8082 | || !add_dynamic_entry (DT_JMPREL, 0) |
8083 | || !add_dynamic_entry (DT_PPC64_GLINK, 0)) | |
b34976b6 | 8084 | return FALSE; |
5bd4f169 AM |
8085 | } |
8086 | ||
19397422 AM |
8087 | if (NO_OPD_RELOCS) |
8088 | { | |
8089 | if (!add_dynamic_entry (DT_PPC64_OPD, 0) | |
8090 | || !add_dynamic_entry (DT_PPC64_OPDSZ, 0)) | |
b34976b6 | 8091 | return FALSE; |
19397422 AM |
8092 | } |
8093 | ||
5bd4f169 AM |
8094 | if (relocs) |
8095 | { | |
dc810e39 AM |
8096 | if (!add_dynamic_entry (DT_RELA, 0) |
8097 | || !add_dynamic_entry (DT_RELASZ, 0) | |
8098 | || !add_dynamic_entry (DT_RELAENT, sizeof (Elf64_External_Rela))) | |
b34976b6 | 8099 | return FALSE; |
5bd4f169 | 8100 | |
65f38f15 AM |
8101 | /* If any dynamic relocs apply to a read-only section, |
8102 | then we need a DT_TEXTREL entry. */ | |
248866a8 | 8103 | if ((info->flags & DF_TEXTREL) == 0) |
4ce794b7 | 8104 | elf_link_hash_traverse (&htab->elf, readonly_dynrelocs, info); |
5bd4f169 | 8105 | |
65f38f15 | 8106 | if ((info->flags & DF_TEXTREL) != 0) |
5bd4f169 | 8107 | { |
65f38f15 | 8108 | if (!add_dynamic_entry (DT_TEXTREL, 0)) |
b34976b6 | 8109 | return FALSE; |
5bd4f169 | 8110 | } |
5bd4f169 | 8111 | } |
5bd4f169 | 8112 | } |
65f38f15 | 8113 | #undef add_dynamic_entry |
5bd4f169 | 8114 | |
b34976b6 | 8115 | return TRUE; |
5bd4f169 AM |
8116 | } |
8117 | ||
721956f4 | 8118 | /* Determine the type of stub needed, if any, for a call. */ |
5bd4f169 | 8119 | |
4ce794b7 AM |
8120 | static inline enum ppc_stub_type |
8121 | ppc_type_of_stub (asection *input_sec, | |
8122 | const Elf_Internal_Rela *rel, | |
8123 | struct ppc_link_hash_entry **hash, | |
8124 | bfd_vma destination) | |
5bd4f169 | 8125 | { |
721956f4 AM |
8126 | struct ppc_link_hash_entry *h = *hash; |
8127 | bfd_vma location; | |
8128 | bfd_vma branch_offset; | |
8129 | bfd_vma max_branch_offset; | |
4ce794b7 | 8130 | enum elf_ppc64_reloc_type r_type; |
5bd4f169 | 8131 | |
721956f4 AM |
8132 | if (h != NULL) |
8133 | { | |
7fe2b9a6 AM |
8134 | struct ppc_link_hash_entry *fdh = h; |
8135 | if (fdh->oh != NULL | |
8136 | && fdh->oh->is_func_descriptor) | |
8137 | fdh = fdh->oh; | |
8387904d | 8138 | |
7fe2b9a6 | 8139 | if (fdh->elf.dynindx != -1) |
5bd4f169 | 8140 | { |
411e1bfb | 8141 | struct plt_entry *ent; |
8387904d | 8142 | |
7fe2b9a6 | 8143 | for (ent = fdh->elf.plt.plist; ent != NULL; ent = ent->next) |
411e1bfb AM |
8144 | if (ent->addend == rel->r_addend |
8145 | && ent->plt.offset != (bfd_vma) -1) | |
8146 | { | |
7fe2b9a6 | 8147 | *hash = fdh; |
411e1bfb AM |
8148 | return ppc_stub_plt_call; |
8149 | } | |
5bd4f169 AM |
8150 | } |
8151 | ||
7fe2b9a6 AM |
8152 | /* Here, we know we don't have a plt entry. If we don't have a |
8153 | either a defined function descriptor or a defined entry symbol | |
8154 | in a regular object file, then it is pointless trying to make | |
8155 | any other type of stub. */ | |
8156 | if (!((fdh->elf.root.type == bfd_link_hash_defined | |
8157 | || fdh->elf.root.type == bfd_link_hash_defweak) | |
8158 | && fdh->elf.root.u.def.section->output_section != NULL) | |
8159 | && !((h->elf.root.type == bfd_link_hash_defined | |
8160 | || h->elf.root.type == bfd_link_hash_defweak) | |
8161 | && h->elf.root.u.def.section->output_section != NULL)) | |
721956f4 | 8162 | return ppc_stub_none; |
5d1634d7 | 8163 | } |
5d1634d7 | 8164 | |
721956f4 AM |
8165 | /* Determine where the call point is. */ |
8166 | location = (input_sec->output_offset | |
8167 | + input_sec->output_section->vma | |
8168 | + rel->r_offset); | |
5d1634d7 | 8169 | |
721956f4 AM |
8170 | branch_offset = destination - location; |
8171 | r_type = ELF64_R_TYPE (rel->r_info); | |
5d1634d7 | 8172 | |
721956f4 AM |
8173 | /* Determine if a long branch stub is needed. */ |
8174 | max_branch_offset = 1 << 25; | |
4ce794b7 | 8175 | if (r_type != R_PPC64_REL24) |
721956f4 | 8176 | max_branch_offset = 1 << 15; |
5d1634d7 | 8177 | |
721956f4 AM |
8178 | if (branch_offset + max_branch_offset >= 2 * max_branch_offset) |
8179 | /* We need a stub. Figure out whether a long_branch or plt_branch | |
8180 | is needed later. */ | |
8181 | return ppc_stub_long_branch; | |
5d1634d7 | 8182 | |
721956f4 | 8183 | return ppc_stub_none; |
5d1634d7 AM |
8184 | } |
8185 | ||
8186 | /* Build a .plt call stub. */ | |
8187 | ||
4ce794b7 AM |
8188 | static inline bfd_byte * |
8189 | build_plt_stub (bfd *obfd, bfd_byte *p, int offset) | |
5d1634d7 AM |
8190 | { |
8191 | #define PPC_LO(v) ((v) & 0xffff) | |
8192 | #define PPC_HI(v) (((v) >> 16) & 0xffff) | |
8193 | #define PPC_HA(v) PPC_HI ((v) + 0x8000) | |
8194 | ||
5d1634d7 | 8195 | bfd_put_32 (obfd, ADDIS_R12_R2 | PPC_HA (offset), p), p += 4; |
ad8e1ba5 | 8196 | bfd_put_32 (obfd, STD_R2_40R1, p), p += 4; |
5d1634d7 AM |
8197 | bfd_put_32 (obfd, LD_R11_0R12 | PPC_LO (offset), p), p += 4; |
8198 | if (PPC_HA (offset + 8) != PPC_HA (offset)) | |
ad8e1ba5 | 8199 | bfd_put_32 (obfd, ADDIS_R12_R12 | 1, p), p += 4; |
5d1634d7 AM |
8200 | offset += 8; |
8201 | bfd_put_32 (obfd, LD_R2_0R12 | PPC_LO (offset), p), p += 4; | |
8202 | if (PPC_HA (offset + 8) != PPC_HA (offset)) | |
ad8e1ba5 | 8203 | bfd_put_32 (obfd, ADDIS_R12_R12 | 1, p), p += 4; |
5d1634d7 AM |
8204 | offset += 8; |
8205 | bfd_put_32 (obfd, MTCTR_R11, p), p += 4; | |
8206 | bfd_put_32 (obfd, LD_R11_0R12 | PPC_LO (offset), p), p += 4; | |
8207 | bfd_put_32 (obfd, BCTR, p), p += 4; | |
8208 | return p; | |
8209 | } | |
8210 | ||
b34976b6 | 8211 | static bfd_boolean |
4ce794b7 | 8212 | ppc_build_one_stub (struct bfd_hash_entry *gen_entry, void *in_arg) |
5d1634d7 | 8213 | { |
721956f4 AM |
8214 | struct ppc_stub_hash_entry *stub_entry; |
8215 | struct ppc_branch_hash_entry *br_entry; | |
5d1634d7 AM |
8216 | struct bfd_link_info *info; |
8217 | struct ppc_link_hash_table *htab; | |
721956f4 AM |
8218 | bfd_byte *loc; |
8219 | bfd_byte *p; | |
8220 | unsigned int indx; | |
411e1bfb | 8221 | struct plt_entry *ent; |
ee75fd95 | 8222 | bfd_vma dest, off; |
721956f4 | 8223 | int size; |
5d1634d7 | 8224 | |
721956f4 AM |
8225 | /* Massage our args to the form they really have. */ |
8226 | stub_entry = (struct ppc_stub_hash_entry *) gen_entry; | |
4ce794b7 | 8227 | info = in_arg; |
5d1634d7 | 8228 | |
5d1634d7 AM |
8229 | htab = ppc_hash_table (info); |
8230 | ||
721956f4 | 8231 | /* Make a note of the offset within the stubs for this entry. */ |
eea6121a | 8232 | stub_entry->stub_offset = stub_entry->stub_sec->size; |
97b639ba | 8233 | loc = stub_entry->stub_sec->contents + stub_entry->stub_offset; |
721956f4 | 8234 | |
4ce794b7 | 8235 | htab->stub_count[stub_entry->stub_type - 1] += 1; |
721956f4 | 8236 | switch (stub_entry->stub_type) |
5d1634d7 | 8237 | { |
721956f4 | 8238 | case ppc_stub_long_branch: |
ad8e1ba5 | 8239 | case ppc_stub_long_branch_r2off: |
721956f4 | 8240 | /* Branches are relative. This is where we are going to. */ |
ee75fd95 AM |
8241 | off = dest = (stub_entry->target_value |
8242 | + stub_entry->target_section->output_offset | |
8243 | + stub_entry->target_section->output_section->vma); | |
5d1634d7 | 8244 | |
721956f4 AM |
8245 | /* And this is where we are coming from. */ |
8246 | off -= (stub_entry->stub_offset | |
97b639ba AM |
8247 | + stub_entry->stub_sec->output_offset |
8248 | + stub_entry->stub_sec->output_section->vma); | |
e86ce104 | 8249 | |
ad8e1ba5 AM |
8250 | if (stub_entry->stub_type != ppc_stub_long_branch_r2off) |
8251 | size = 4; | |
8252 | else | |
8253 | { | |
8254 | bfd_vma r2off; | |
8255 | ||
8256 | r2off = (htab->stub_group[stub_entry->target_section->id].toc_off | |
8257 | - htab->stub_group[stub_entry->id_sec->id].toc_off); | |
97b639ba | 8258 | bfd_put_32 (htab->stub_bfd, STD_R2_40R1, loc); |
ad8e1ba5 | 8259 | loc += 4; |
97b639ba | 8260 | bfd_put_32 (htab->stub_bfd, ADDIS_R2_R2 | PPC_HA (r2off), loc); |
ad8e1ba5 | 8261 | loc += 4; |
97b639ba | 8262 | bfd_put_32 (htab->stub_bfd, ADDI_R2_R2 | PPC_LO (r2off), loc); |
ad8e1ba5 AM |
8263 | loc += 4; |
8264 | off -= 12; | |
8265 | size = 16; | |
8266 | } | |
97b639ba | 8267 | bfd_put_32 (htab->stub_bfd, B_DOT | (off & 0x3fffffc), loc); |
ad8e1ba5 | 8268 | |
5c3dead3 AM |
8269 | if (off + (1 << 25) >= (bfd_vma) (1 << 26)) |
8270 | { | |
8271 | (*_bfd_error_handler) (_("long branch stub `%s' offset overflow"), | |
8272 | stub_entry->root.string); | |
8273 | htab->stub_error = TRUE; | |
8274 | return FALSE; | |
8275 | } | |
ee75fd95 AM |
8276 | |
8277 | if (info->emitrelocations) | |
8278 | { | |
8279 | Elf_Internal_Rela *relocs, *r; | |
8280 | struct bfd_elf_section_data *elfsec_data; | |
8281 | ||
8282 | elfsec_data = elf_section_data (stub_entry->stub_sec); | |
8283 | relocs = elfsec_data->relocs; | |
8284 | if (relocs == NULL) | |
8285 | { | |
8286 | bfd_size_type relsize; | |
8287 | relsize = stub_entry->stub_sec->reloc_count * sizeof (*relocs); | |
8288 | relocs = bfd_alloc (htab->stub_bfd, relsize); | |
8289 | if (relocs == NULL) | |
8290 | return FALSE; | |
8291 | elfsec_data->relocs = relocs; | |
8292 | elfsec_data->rel_hdr.sh_size = relsize; | |
8293 | elfsec_data->rel_hdr.sh_entsize = 24; | |
8294 | stub_entry->stub_sec->reloc_count = 0; | |
8295 | } | |
8296 | r = relocs + stub_entry->stub_sec->reloc_count; | |
8297 | stub_entry->stub_sec->reloc_count += 1; | |
8298 | r->r_offset = loc - stub_entry->stub_sec->contents; | |
8299 | r->r_info = ELF64_R_INFO (0, R_PPC64_REL24); | |
8300 | r->r_addend = dest; | |
8301 | if (stub_entry->h != NULL) | |
8302 | { | |
8303 | struct elf_link_hash_entry **hashes; | |
8304 | unsigned long symndx; | |
8305 | struct ppc_link_hash_entry *h; | |
8306 | ||
8307 | hashes = elf_sym_hashes (htab->stub_bfd); | |
8308 | if (hashes == NULL) | |
8309 | { | |
8310 | bfd_size_type hsize; | |
8311 | ||
8312 | hsize = (htab->stub_globals + 1) * sizeof (*hashes); | |
8313 | hashes = bfd_zalloc (htab->stub_bfd, hsize); | |
8314 | if (hashes == NULL) | |
8315 | return FALSE; | |
8316 | elf_sym_hashes (htab->stub_bfd) = hashes; | |
8317 | htab->stub_globals = 1; | |
8318 | } | |
8319 | symndx = htab->stub_globals++; | |
8320 | h = stub_entry->h; | |
8321 | hashes[symndx] = &h->elf; | |
8322 | r->r_info = ELF64_R_INFO (symndx, R_PPC64_REL24); | |
8323 | if (h->oh != NULL && h->oh->is_func) | |
8324 | h = h->oh; | |
8325 | if (h->elf.root.u.def.section != stub_entry->target_section) | |
8326 | /* H is an opd symbol. The addend must be zero. */ | |
8327 | r->r_addend = 0; | |
8328 | else | |
8329 | { | |
8330 | off = (h->elf.root.u.def.value | |
8331 | + h->elf.root.u.def.section->output_offset | |
8332 | + h->elf.root.u.def.section->output_section->vma); | |
8333 | r->r_addend -= off; | |
8334 | } | |
8335 | } | |
8336 | } | |
721956f4 | 8337 | break; |
e86ce104 | 8338 | |
721956f4 | 8339 | case ppc_stub_plt_branch: |
ad8e1ba5 | 8340 | case ppc_stub_plt_branch_r2off: |
721956f4 AM |
8341 | br_entry = ppc_branch_hash_lookup (&htab->branch_hash_table, |
8342 | stub_entry->root.string + 9, | |
b34976b6 | 8343 | FALSE, FALSE); |
721956f4 AM |
8344 | if (br_entry == NULL) |
8345 | { | |
8346 | (*_bfd_error_handler) (_("can't find branch stub `%s'"), | |
5c3dead3 | 8347 | stub_entry->root.string); |
b34976b6 AM |
8348 | htab->stub_error = TRUE; |
8349 | return FALSE; | |
721956f4 AM |
8350 | } |
8351 | ||
8352 | off = (stub_entry->target_value | |
8353 | + stub_entry->target_section->output_offset | |
8354 | + stub_entry->target_section->output_section->vma); | |
8355 | ||
4ce794b7 AM |
8356 | bfd_put_64 (htab->brlt->owner, off, |
8357 | htab->brlt->contents + br_entry->offset); | |
721956f4 | 8358 | |
ee75fd95 | 8359 | if (htab->relbrlt != NULL) |
721956f4 AM |
8360 | { |
8361 | /* Create a reloc for the branch lookup table entry. */ | |
8362 | Elf_Internal_Rela rela; | |
ad8e1ba5 | 8363 | bfd_byte *rl; |
5d1634d7 | 8364 | |
721956f4 | 8365 | rela.r_offset = (br_entry->offset |
4ce794b7 AM |
8366 | + htab->brlt->output_offset |
8367 | + htab->brlt->output_section->vma); | |
721956f4 AM |
8368 | rela.r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE); |
8369 | rela.r_addend = off; | |
8370 | ||
4ce794b7 AM |
8371 | rl = htab->relbrlt->contents; |
8372 | rl += htab->relbrlt->reloc_count++ * sizeof (Elf64_External_Rela); | |
8373 | bfd_elf64_swap_reloca_out (htab->relbrlt->owner, &rela, rl); | |
721956f4 | 8374 | } |
84f5d08e AM |
8375 | else if (info->emitrelocations) |
8376 | { | |
8377 | Elf_Internal_Rela *relocs, *r; | |
8378 | struct bfd_elf_section_data *elfsec_data; | |
8379 | ||
8380 | elfsec_data = elf_section_data (htab->brlt); | |
8381 | relocs = elfsec_data->relocs; | |
8382 | if (relocs == NULL) | |
8383 | { | |
8384 | bfd_size_type relsize; | |
8385 | relsize = htab->brlt->reloc_count * sizeof (*relocs); | |
8386 | relocs = bfd_alloc (htab->brlt->owner, relsize); | |
8387 | if (relocs == NULL) | |
8388 | return FALSE; | |
8389 | elfsec_data->relocs = relocs; | |
8390 | elfsec_data->rel_hdr.sh_size = relsize; | |
8391 | elfsec_data->rel_hdr.sh_entsize = 24; | |
8392 | htab->brlt->reloc_count = 0; | |
8393 | } | |
8394 | r = relocs + htab->brlt->reloc_count; | |
8395 | htab->brlt->reloc_count += 1; | |
8396 | r->r_offset = (br_entry->offset | |
8397 | + htab->brlt->output_offset | |
8398 | + htab->brlt->output_section->vma); | |
8399 | r->r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE); | |
8400 | r->r_addend = off; | |
8401 | } | |
721956f4 AM |
8402 | |
8403 | off = (br_entry->offset | |
4ce794b7 AM |
8404 | + htab->brlt->output_offset |
8405 | + htab->brlt->output_section->vma | |
8406 | - elf_gp (htab->brlt->output_section->owner) | |
ad8e1ba5 | 8407 | - htab->stub_group[stub_entry->id_sec->id].toc_off); |
721956f4 | 8408 | |
ad8e1ba5 | 8409 | if (off + 0x80008000 > 0xffffffff || (off & 7) != 0) |
5d1634d7 AM |
8410 | { |
8411 | (*_bfd_error_handler) | |
e86ce104 | 8412 | (_("linkage table error against `%s'"), |
721956f4 | 8413 | stub_entry->root.string); |
5d1634d7 | 8414 | bfd_set_error (bfd_error_bad_value); |
b34976b6 AM |
8415 | htab->stub_error = TRUE; |
8416 | return FALSE; | |
5d1634d7 | 8417 | } |
41bd81ab | 8418 | |
721956f4 | 8419 | indx = off; |
ad8e1ba5 AM |
8420 | if (stub_entry->stub_type != ppc_stub_plt_branch_r2off) |
8421 | { | |
97b639ba | 8422 | bfd_put_32 (htab->stub_bfd, ADDIS_R12_R2 | PPC_HA (indx), loc); |
ad8e1ba5 | 8423 | loc += 4; |
97b639ba | 8424 | bfd_put_32 (htab->stub_bfd, LD_R11_0R12 | PPC_LO (indx), loc); |
ad8e1ba5 AM |
8425 | size = 16; |
8426 | } | |
8427 | else | |
8428 | { | |
8429 | bfd_vma r2off; | |
8430 | ||
8431 | r2off = (htab->stub_group[stub_entry->target_section->id].toc_off | |
8432 | - htab->stub_group[stub_entry->id_sec->id].toc_off); | |
97b639ba | 8433 | bfd_put_32 (htab->stub_bfd, STD_R2_40R1, loc); |
ad8e1ba5 | 8434 | loc += 4; |
97b639ba | 8435 | bfd_put_32 (htab->stub_bfd, ADDIS_R12_R2 | PPC_HA (indx), loc); |
ad8e1ba5 | 8436 | loc += 4; |
97b639ba | 8437 | bfd_put_32 (htab->stub_bfd, LD_R11_0R12 | PPC_LO (indx), loc); |
ad8e1ba5 | 8438 | loc += 4; |
97b639ba | 8439 | bfd_put_32 (htab->stub_bfd, ADDIS_R2_R2 | PPC_HA (r2off), loc); |
ad8e1ba5 | 8440 | loc += 4; |
97b639ba | 8441 | bfd_put_32 (htab->stub_bfd, ADDI_R2_R2 | PPC_LO (r2off), loc); |
ad8e1ba5 AM |
8442 | size = 28; |
8443 | } | |
8444 | loc += 4; | |
97b639ba | 8445 | bfd_put_32 (htab->stub_bfd, MTCTR_R11, loc); |
ad8e1ba5 | 8446 | loc += 4; |
97b639ba | 8447 | bfd_put_32 (htab->stub_bfd, BCTR, loc); |
721956f4 | 8448 | break; |
5d1634d7 | 8449 | |
721956f4 | 8450 | case ppc_stub_plt_call: |
c862ae31 AM |
8451 | /* Do the best we can for shared libraries built without |
8452 | exporting ".foo" for each "foo". This can happen when symbol | |
8453 | versioning scripts strip all bar a subset of symbols. */ | |
8387904d AM |
8454 | if (stub_entry->h->oh != NULL |
8455 | && stub_entry->h->oh->elf.root.type != bfd_link_hash_defined | |
34814b9f | 8456 | && stub_entry->h->oh->elf.root.type != bfd_link_hash_defweak) |
c862ae31 AM |
8457 | { |
8458 | /* Point the symbol at the stub. There may be multiple stubs, | |
8459 | we don't really care; The main thing is to make this sym | |
8f3bab57 AM |
8460 | defined somewhere. Maybe defining the symbol in the stub |
8461 | section is a silly idea. If we didn't do this, htab->top_id | |
8462 | could disappear. */ | |
34814b9f AM |
8463 | stub_entry->h->oh->elf.root.type = bfd_link_hash_defined; |
8464 | stub_entry->h->oh->elf.root.u.def.section = stub_entry->stub_sec; | |
8465 | stub_entry->h->oh->elf.root.u.def.value = stub_entry->stub_offset; | |
c862ae31 AM |
8466 | } |
8467 | ||
721956f4 | 8468 | /* Now build the stub. */ |
411e1bfb AM |
8469 | off = (bfd_vma) -1; |
8470 | for (ent = stub_entry->h->elf.plt.plist; ent != NULL; ent = ent->next) | |
8471 | if (ent->addend == stub_entry->addend) | |
8472 | { | |
8473 | off = ent->plt.offset; | |
8474 | break; | |
8475 | } | |
721956f4 AM |
8476 | if (off >= (bfd_vma) -2) |
8477 | abort (); | |
8478 | ||
8479 | off &= ~ (bfd_vma) 1; | |
4ce794b7 AM |
8480 | off += (htab->plt->output_offset |
8481 | + htab->plt->output_section->vma | |
8482 | - elf_gp (htab->plt->output_section->owner) | |
ad8e1ba5 | 8483 | - htab->stub_group[stub_entry->id_sec->id].toc_off); |
721956f4 | 8484 | |
ad8e1ba5 | 8485 | if (off + 0x80008000 > 0xffffffff || (off & 7) != 0) |
721956f4 AM |
8486 | { |
8487 | (*_bfd_error_handler) | |
8488 | (_("linkage table error against `%s'"), | |
8489 | stub_entry->h->elf.root.root.string); | |
8490 | bfd_set_error (bfd_error_bad_value); | |
b34976b6 AM |
8491 | htab->stub_error = TRUE; |
8492 | return FALSE; | |
721956f4 AM |
8493 | } |
8494 | ||
97b639ba | 8495 | p = build_plt_stub (htab->stub_bfd, loc, off); |
721956f4 AM |
8496 | size = p - loc; |
8497 | break; | |
8498 | ||
8499 | default: | |
8500 | BFD_FAIL (); | |
b34976b6 | 8501 | return FALSE; |
721956f4 AM |
8502 | } |
8503 | ||
eea6121a | 8504 | stub_entry->stub_sec->size += size; |
97b639ba | 8505 | |
ee75fd95 | 8506 | if (htab->emit_stub_syms) |
97b639ba AM |
8507 | { |
8508 | struct elf_link_hash_entry *h; | |
ee75fd95 AM |
8509 | size_t len1, len2; |
8510 | char *name; | |
8511 | const char *const stub_str[] = { "long_branch", | |
8512 | "long_branch_r2off", | |
8513 | "plt_branch", | |
8514 | "plt_branch_r2off", | |
8515 | "plt_call" }; | |
8516 | ||
8517 | len1 = strlen (stub_str[stub_entry->stub_type - 1]); | |
8518 | len2 = strlen (stub_entry->root.string); | |
8519 | name = bfd_malloc (len1 + len2 + 2); | |
8520 | if (name == NULL) | |
8521 | return FALSE; | |
8522 | memcpy (name, stub_entry->root.string, 9); | |
8523 | memcpy (name + 9, stub_str[stub_entry->stub_type - 1], len1); | |
8524 | memcpy (name + len1 + 9, stub_entry->root.string + 8, len2 - 8 + 1); | |
8525 | h = elf_link_hash_lookup (&htab->elf, name, TRUE, FALSE, FALSE); | |
97b639ba AM |
8526 | if (h == NULL) |
8527 | return FALSE; | |
8528 | if (h->root.type == bfd_link_hash_new) | |
8529 | { | |
8530 | h->root.type = bfd_link_hash_defined; | |
8531 | h->root.u.def.section = stub_entry->stub_sec; | |
8532 | h->root.u.def.value = stub_entry->stub_offset; | |
f5385ebf AM |
8533 | h->ref_regular = 1; |
8534 | h->def_regular = 1; | |
8535 | h->ref_regular_nonweak = 1; | |
8536 | h->forced_local = 1; | |
8537 | h->non_elf = 0; | |
97b639ba AM |
8538 | } |
8539 | } | |
8540 | ||
b34976b6 | 8541 | return TRUE; |
721956f4 AM |
8542 | } |
8543 | ||
8544 | /* As above, but don't actually build the stub. Just bump offset so | |
8545 | we know stub section sizes, and select plt_branch stubs where | |
8546 | long_branch stubs won't do. */ | |
8547 | ||
b34976b6 | 8548 | static bfd_boolean |
4ce794b7 | 8549 | ppc_size_one_stub (struct bfd_hash_entry *gen_entry, void *in_arg) |
721956f4 AM |
8550 | { |
8551 | struct ppc_stub_hash_entry *stub_entry; | |
63bc6f6c | 8552 | struct bfd_link_info *info; |
721956f4 AM |
8553 | struct ppc_link_hash_table *htab; |
8554 | bfd_vma off; | |
8555 | int size; | |
8556 | ||
8557 | /* Massage our args to the form they really have. */ | |
8558 | stub_entry = (struct ppc_stub_hash_entry *) gen_entry; | |
63bc6f6c AM |
8559 | info = in_arg; |
8560 | ||
8561 | htab = ppc_hash_table (info); | |
721956f4 AM |
8562 | |
8563 | if (stub_entry->stub_type == ppc_stub_plt_call) | |
8564 | { | |
411e1bfb | 8565 | struct plt_entry *ent; |
58ac9f71 | 8566 | off = (bfd_vma) -1; |
411e1bfb AM |
8567 | for (ent = stub_entry->h->elf.plt.plist; ent != NULL; ent = ent->next) |
8568 | if (ent->addend == stub_entry->addend) | |
8569 | { | |
8570 | off = ent->plt.offset & ~(bfd_vma) 1; | |
8571 | break; | |
8572 | } | |
58ac9f71 | 8573 | if (off >= (bfd_vma) -2) |
411e1bfb | 8574 | abort (); |
4ce794b7 AM |
8575 | off += (htab->plt->output_offset |
8576 | + htab->plt->output_section->vma | |
8577 | - elf_gp (htab->plt->output_section->owner) | |
ad8e1ba5 | 8578 | - htab->stub_group[stub_entry->id_sec->id].toc_off); |
721956f4 | 8579 | |
ad8e1ba5 | 8580 | size = PLT_CALL_STUB_SIZE; |
4ce794b7 | 8581 | if (PPC_HA (off + 16) != PPC_HA (off)) |
721956f4 AM |
8582 | size += 4; |
8583 | } | |
8584 | else | |
8585 | { | |
ad8e1ba5 AM |
8586 | /* ppc_stub_long_branch or ppc_stub_plt_branch, or their r2off |
8587 | variants. */ | |
721956f4 AM |
8588 | off = (stub_entry->target_value |
8589 | + stub_entry->target_section->output_offset | |
8590 | + stub_entry->target_section->output_section->vma); | |
eea6121a | 8591 | off -= (stub_entry->stub_sec->size |
721956f4 AM |
8592 | + stub_entry->stub_sec->output_offset |
8593 | + stub_entry->stub_sec->output_section->vma); | |
8594 | ||
ad8e1ba5 AM |
8595 | /* Reset the stub type from the plt variant in case we now |
8596 | can reach with a shorter stub. */ | |
8597 | if (stub_entry->stub_type >= ppc_stub_plt_branch) | |
8598 | stub_entry->stub_type += ppc_stub_long_branch - ppc_stub_plt_branch; | |
8599 | ||
8600 | size = 4; | |
8601 | if (stub_entry->stub_type == ppc_stub_long_branch_r2off) | |
8602 | { | |
8603 | off -= 12; | |
8604 | size = 16; | |
8605 | } | |
8606 | ||
8607 | /* If the branch offset if too big, use a ppc_stub_plt_branch. */ | |
721956f4 AM |
8608 | if (off + (1 << 25) >= (bfd_vma) (1 << 26)) |
8609 | { | |
8610 | struct ppc_branch_hash_entry *br_entry; | |
8611 | ||
8612 | br_entry = ppc_branch_hash_lookup (&htab->branch_hash_table, | |
8613 | stub_entry->root.string + 9, | |
b34976b6 | 8614 | TRUE, FALSE); |
721956f4 AM |
8615 | if (br_entry == NULL) |
8616 | { | |
8617 | (*_bfd_error_handler) (_("can't build branch stub `%s'"), | |
5c3dead3 | 8618 | stub_entry->root.string); |
b34976b6 AM |
8619 | htab->stub_error = TRUE; |
8620 | return FALSE; | |
721956f4 AM |
8621 | } |
8622 | ||
8623 | if (br_entry->iter != htab->stub_iteration) | |
8624 | { | |
8625 | br_entry->iter = htab->stub_iteration; | |
eea6121a AM |
8626 | br_entry->offset = htab->brlt->size; |
8627 | htab->brlt->size += 8; | |
63bc6f6c | 8628 | |
ee75fd95 | 8629 | if (htab->relbrlt != NULL) |
eea6121a | 8630 | htab->relbrlt->size += sizeof (Elf64_External_Rela); |
84f5d08e AM |
8631 | else if (info->emitrelocations) |
8632 | { | |
8633 | htab->brlt->reloc_count += 1; | |
8634 | htab->brlt->flags |= SEC_RELOC; | |
8635 | } | |
721956f4 | 8636 | } |
ad8e1ba5 AM |
8637 | |
8638 | stub_entry->stub_type += ppc_stub_plt_branch - ppc_stub_long_branch; | |
721956f4 | 8639 | size = 16; |
ad8e1ba5 AM |
8640 | if (stub_entry->stub_type != ppc_stub_plt_branch) |
8641 | size = 28; | |
721956f4 | 8642 | } |
84f5d08e AM |
8643 | else if (info->emitrelocations) |
8644 | { | |
8645 | stub_entry->stub_sec->reloc_count += 1; | |
8646 | stub_entry->stub_sec->flags |= SEC_RELOC; | |
8647 | } | |
721956f4 AM |
8648 | } |
8649 | ||
eea6121a | 8650 | stub_entry->stub_sec->size += size; |
b34976b6 | 8651 | return TRUE; |
721956f4 AM |
8652 | } |
8653 | ||
8654 | /* Set up various things so that we can make a list of input sections | |
8655 | for each output section included in the link. Returns -1 on error, | |
cedb70c5 | 8656 | 0 when no stubs will be needed, and 1 on success. */ |
721956f4 AM |
8657 | |
8658 | int | |
4c52953f AM |
8659 | ppc64_elf_setup_section_lists (bfd *output_bfd, |
8660 | struct bfd_link_info *info, | |
8661 | int no_multi_toc) | |
721956f4 AM |
8662 | { |
8663 | bfd *input_bfd; | |
734b6cf9 | 8664 | int top_id, top_index, id; |
721956f4 | 8665 | asection *section; |
734b6cf9 | 8666 | asection **input_list; |
721956f4 AM |
8667 | bfd_size_type amt; |
8668 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
8669 | ||
4c52953f AM |
8670 | htab->no_multi_toc = no_multi_toc; |
8671 | ||
4ce794b7 | 8672 | if (htab->brlt == NULL) |
721956f4 AM |
8673 | return 0; |
8674 | ||
1e2f5b6e | 8675 | /* Find the top input section id. */ |
3d6f9012 | 8676 | for (input_bfd = info->input_bfds, top_id = 3; |
721956f4 AM |
8677 | input_bfd != NULL; |
8678 | input_bfd = input_bfd->link_next) | |
8679 | { | |
721956f4 AM |
8680 | for (section = input_bfd->sections; |
8681 | section != NULL; | |
8682 | section = section->next) | |
8683 | { | |
8684 | if (top_id < section->id) | |
8685 | top_id = section->id; | |
8686 | } | |
8687 | } | |
721956f4 | 8688 | |
8f3bab57 | 8689 | htab->top_id = top_id; |
721956f4 | 8690 | amt = sizeof (struct map_stub) * (top_id + 1); |
4ce794b7 | 8691 | htab->stub_group = bfd_zmalloc (amt); |
721956f4 AM |
8692 | if (htab->stub_group == NULL) |
8693 | return -1; | |
8694 | ||
3d6f9012 AM |
8695 | /* Set toc_off for com, und, abs and ind sections. */ |
8696 | for (id = 0; id < 3; id++) | |
8697 | htab->stub_group[id].toc_off = TOC_BASE_OFF; | |
721956f4 | 8698 | |
3d6f9012 | 8699 | elf_gp (output_bfd) = htab->toc_curr = ppc64_elf_toc (output_bfd); |
734b6cf9 AM |
8700 | |
8701 | /* We can't use output_bfd->section_count here to find the top output | |
8702 | section index as some sections may have been removed, and | |
8423293d | 8703 | strip_excluded_output_sections doesn't renumber the indices. */ |
734b6cf9 AM |
8704 | for (section = output_bfd->sections, top_index = 0; |
8705 | section != NULL; | |
8706 | section = section->next) | |
8707 | { | |
8708 | if (top_index < section->index) | |
8709 | top_index = section->index; | |
8710 | } | |
8711 | ||
8712 | htab->top_index = top_index; | |
8713 | amt = sizeof (asection *) * (top_index + 1); | |
4ce794b7 | 8714 | input_list = bfd_zmalloc (amt); |
734b6cf9 AM |
8715 | htab->input_list = input_list; |
8716 | if (input_list == NULL) | |
8717 | return -1; | |
8718 | ||
721956f4 AM |
8719 | return 1; |
8720 | } | |
8721 | ||
e717da7e AM |
8722 | /* The linker repeatedly calls this function for each TOC input section |
8723 | and linker generated GOT section. Group input bfds such that the toc | |
8724 | within a group is less than 64k in size. Will break with cute linker | |
8725 | scripts that play games with dot in the output toc section. */ | |
ad8e1ba5 AM |
8726 | |
8727 | void | |
4ce794b7 | 8728 | ppc64_elf_next_toc_section (struct bfd_link_info *info, asection *isec) |
ad8e1ba5 AM |
8729 | { |
8730 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
8731 | ||
4c52953f AM |
8732 | if (!htab->no_multi_toc) |
8733 | { | |
8734 | bfd_vma addr = isec->output_offset + isec->output_section->vma; | |
8735 | bfd_vma off = addr - htab->toc_curr; | |
8736 | ||
8737 | if (off + isec->size > 0x10000) | |
8738 | htab->toc_curr = addr; | |
99877b66 | 8739 | |
4c52953f AM |
8740 | elf_gp (isec->owner) = (htab->toc_curr |
8741 | - elf_gp (isec->output_section->owner) | |
8742 | + TOC_BASE_OFF); | |
8743 | } | |
ad8e1ba5 AM |
8744 | } |
8745 | ||
8746 | /* Called after the last call to the above function. */ | |
8747 | ||
8748 | void | |
4c52953f | 8749 | ppc64_elf_reinit_toc (bfd *output_bfd, struct bfd_link_info *info) |
ad8e1ba5 AM |
8750 | { |
8751 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
ad8e1ba5 | 8752 | |
4c52953f AM |
8753 | htab->multi_toc_needed = htab->toc_curr != elf_gp (output_bfd); |
8754 | ||
ad8e1ba5 AM |
8755 | /* toc_curr tracks the TOC offset used for code sections below in |
8756 | ppc64_elf_next_input_section. Start off at 0x8000. */ | |
3d6f9012 | 8757 | htab->toc_curr = TOC_BASE_OFF; |
ad8e1ba5 AM |
8758 | } |
8759 | ||
9b5ecbd0 AM |
8760 | /* No toc references were found in ISEC. If the code in ISEC makes no |
8761 | calls, then there's no need to use toc adjusting stubs when branching | |
8762 | into ISEC. Actually, indirect calls from ISEC are OK as they will | |
4c52953f AM |
8763 | load r2. Returns -1 on error, 0 for no stub needed, 1 for stub |
8764 | needed, and 2 if a cyclical call-graph was found but no other reason | |
8765 | for a stub was detected. If called from the top level, a return of | |
8766 | 2 means the same as a return of 0. */ | |
9b5ecbd0 AM |
8767 | |
8768 | static int | |
4ce794b7 | 8769 | toc_adjusting_stub_needed (struct bfd_link_info *info, asection *isec) |
9b5ecbd0 | 8770 | { |
4c52953f AM |
8771 | Elf_Internal_Rela *relstart, *rel; |
8772 | Elf_Internal_Sym *local_syms; | |
9b5ecbd0 | 8773 | int ret; |
4c52953f | 8774 | struct ppc_link_hash_table *htab; |
9b5ecbd0 | 8775 | |
772119ce AM |
8776 | /* We know none of our code bearing sections will need toc stubs. */ |
8777 | if ((isec->flags & SEC_LINKER_CREATED) != 0) | |
8778 | return 0; | |
8779 | ||
eea6121a | 8780 | if (isec->size == 0) |
082c50f8 AM |
8781 | return 0; |
8782 | ||
4c52953f AM |
8783 | if (isec->output_section == NULL) |
8784 | return 0; | |
8785 | ||
9b5ecbd0 AM |
8786 | /* Hack for linux kernel. .fixup contains branches, but only back to |
8787 | the function that hit an exception. */ | |
4c52953f AM |
8788 | if (strcmp (isec->name, ".fixup") == 0) |
8789 | return 0; | |
9b5ecbd0 | 8790 | |
4c52953f AM |
8791 | if (isec->reloc_count == 0) |
8792 | return 0; | |
8793 | ||
8794 | relstart = _bfd_elf_link_read_relocs (isec->owner, isec, NULL, NULL, | |
8795 | info->keep_memory); | |
8796 | if (relstart == NULL) | |
8797 | return -1; | |
8798 | ||
8799 | /* Look for branches to outside of this section. */ | |
8800 | local_syms = NULL; | |
8801 | ret = 0; | |
8802 | htab = ppc_hash_table (info); | |
8803 | for (rel = relstart; rel < relstart + isec->reloc_count; ++rel) | |
9b5ecbd0 | 8804 | { |
4c52953f AM |
8805 | enum elf_ppc64_reloc_type r_type; |
8806 | unsigned long r_symndx; | |
8807 | struct elf_link_hash_entry *h; | |
8808 | Elf_Internal_Sym *sym; | |
8809 | asection *sym_sec; | |
8810 | long *opd_adjust; | |
8811 | bfd_vma sym_value; | |
8812 | bfd_vma dest; | |
8813 | ||
8814 | r_type = ELF64_R_TYPE (rel->r_info); | |
8815 | if (r_type != R_PPC64_REL24 | |
8816 | && r_type != R_PPC64_REL14 | |
8817 | && r_type != R_PPC64_REL14_BRTAKEN | |
8818 | && r_type != R_PPC64_REL14_BRNTAKEN) | |
8819 | continue; | |
8820 | ||
8821 | r_symndx = ELF64_R_SYM (rel->r_info); | |
8822 | if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, r_symndx, | |
8823 | isec->owner)) | |
9b5ecbd0 | 8824 | { |
4c52953f AM |
8825 | ret = -1; |
8826 | break; | |
9b5ecbd0 | 8827 | } |
9b5ecbd0 | 8828 | |
2917689a AM |
8829 | /* Calls to dynamic lib functions go through a plt call stub |
8830 | that uses r2. Branches to undefined symbols might be a call | |
8831 | using old-style dot symbols that can be satisfied by a plt | |
8832 | call into a new-style dynamic library. */ | |
4c52953f | 8833 | if (sym_sec == NULL) |
2917689a AM |
8834 | { |
8835 | struct ppc_link_hash_entry *eh = (struct ppc_link_hash_entry *) h; | |
8836 | if (eh != NULL | |
8837 | && eh->oh != NULL | |
8838 | && eh->oh->elf.plt.plist != NULL) | |
8839 | { | |
8840 | ret = 1; | |
8841 | break; | |
8842 | } | |
4c52953f | 8843 | |
2917689a AM |
8844 | /* Ignore other undefined symbols. */ |
8845 | continue; | |
8846 | } | |
8847 | ||
8848 | /* Assume branches to other sections not included in the link need | |
8849 | stubs too, to cover -R and absolute syms. */ | |
4c52953f AM |
8850 | if (sym_sec->output_section == NULL) |
8851 | { | |
8852 | ret = 1; | |
8853 | break; | |
8854 | } | |
8855 | ||
8856 | if (h == NULL) | |
8857 | sym_value = sym->st_value; | |
8858 | else | |
8859 | { | |
8860 | if (h->root.type != bfd_link_hash_defined | |
8861 | && h->root.type != bfd_link_hash_defweak) | |
8862 | abort (); | |
8863 | sym_value = h->root.u.def.value; | |
8864 | } | |
8865 | sym_value += rel->r_addend; | |
8866 | ||
8867 | /* If this branch reloc uses an opd sym, find the code section. */ | |
8868 | opd_adjust = get_opd_info (sym_sec); | |
8869 | if (opd_adjust != NULL) | |
8870 | { | |
4c52953f AM |
8871 | if (h == NULL) |
8872 | { | |
8873 | long adjust; | |
8874 | ||
8875 | adjust = opd_adjust[sym->st_value / 8]; | |
8876 | if (adjust == -1) | |
8877 | /* Assume deleted functions won't ever be called. */ | |
8878 | continue; | |
8879 | sym_value += adjust; | |
8880 | } | |
8881 | ||
8882 | dest = opd_entry_value (sym_sec, sym_value, &sym_sec, NULL); | |
8883 | if (dest == (bfd_vma) -1) | |
8884 | continue; | |
8885 | } | |
8886 | else | |
8887 | dest = (sym_value | |
8888 | + sym_sec->output_offset | |
8889 | + sym_sec->output_section->vma); | |
8890 | ||
8891 | /* Ignore branch to self. */ | |
8892 | if (sym_sec == isec) | |
8893 | continue; | |
8894 | ||
8895 | /* If the called function uses the toc, we need a stub. */ | |
8896 | if (sym_sec->has_toc_reloc | |
8897 | || sym_sec->makes_toc_func_call) | |
8898 | { | |
8899 | ret = 1; | |
8900 | break; | |
8901 | } | |
8902 | ||
8903 | /* Assume any branch that needs a long branch stub might in fact | |
8904 | need a plt_branch stub. A plt_branch stub uses r2. */ | |
8905 | else if (dest - (isec->output_offset | |
8906 | + isec->output_section->vma | |
8907 | + rel->r_offset) + (1 << 25) >= (2 << 25)) | |
9b5ecbd0 AM |
8908 | { |
8909 | ret = 1; | |
8910 | break; | |
8911 | } | |
4c52953f AM |
8912 | |
8913 | /* If calling back to a section in the process of being tested, we | |
8914 | can't say for sure that no toc adjusting stubs are needed, so | |
8915 | don't return zero. */ | |
8916 | else if (sym_sec->call_check_in_progress) | |
8917 | ret = 2; | |
8918 | ||
8919 | /* Branches to another section that itself doesn't have any TOC | |
8920 | references are OK. Recursively call ourselves to check. */ | |
8921 | else if (sym_sec->id <= htab->top_id | |
8922 | && htab->stub_group[sym_sec->id].toc_off == 0) | |
8923 | { | |
8924 | int recur; | |
8925 | ||
8926 | /* Mark current section as indeterminate, so that other | |
8927 | sections that call back to current won't be marked as | |
8928 | known. */ | |
8929 | isec->call_check_in_progress = 1; | |
8930 | recur = toc_adjusting_stub_needed (info, sym_sec); | |
8931 | isec->call_check_in_progress = 0; | |
8932 | ||
8933 | if (recur < 0) | |
8934 | { | |
8935 | /* An error. Exit. */ | |
8936 | ret = -1; | |
8937 | break; | |
8938 | } | |
8939 | else if (recur <= 1) | |
8940 | { | |
8941 | /* Known result. Mark as checked and set section flag. */ | |
8942 | htab->stub_group[sym_sec->id].toc_off = 1; | |
8943 | if (recur != 0) | |
8944 | { | |
8945 | sym_sec->makes_toc_func_call = 1; | |
8946 | ret = 1; | |
8947 | break; | |
8948 | } | |
8949 | } | |
8950 | else | |
8951 | { | |
8952 | /* Unknown result. Continue checking. */ | |
8953 | ret = 2; | |
8954 | } | |
8955 | } | |
9b5ecbd0 AM |
8956 | } |
8957 | ||
4c52953f AM |
8958 | if (local_syms != NULL |
8959 | && (elf_tdata (isec->owner)->symtab_hdr.contents | |
8960 | != (unsigned char *) local_syms)) | |
8961 | free (local_syms); | |
8962 | if (elf_section_data (isec)->relocs != relstart) | |
8963 | free (relstart); | |
8964 | ||
9b5ecbd0 AM |
8965 | return ret; |
8966 | } | |
8967 | ||
721956f4 AM |
8968 | /* The linker repeatedly calls this function for each input section, |
8969 | in the order that input sections are linked into output sections. | |
8970 | Build lists of input sections to determine groupings between which | |
8971 | we may insert linker stubs. */ | |
8972 | ||
9b5ecbd0 | 8973 | bfd_boolean |
4ce794b7 | 8974 | ppc64_elf_next_input_section (struct bfd_link_info *info, asection *isec) |
721956f4 AM |
8975 | { |
8976 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
8977 | ||
734b6cf9 AM |
8978 | if ((isec->output_section->flags & SEC_CODE) != 0 |
8979 | && isec->output_section->index <= htab->top_index) | |
721956f4 | 8980 | { |
734b6cf9 | 8981 | asection **list = htab->input_list + isec->output_section->index; |
3d6f9012 | 8982 | /* Steal the link_sec pointer for our list. */ |
721956f4 | 8983 | #define PREV_SEC(sec) (htab->stub_group[(sec)->id].link_sec) |
3d6f9012 AM |
8984 | /* This happens to make the list in reverse order, |
8985 | which is what we want. */ | |
734b6cf9 AM |
8986 | PREV_SEC (isec) = *list; |
8987 | *list = isec; | |
721956f4 | 8988 | } |
ad8e1ba5 | 8989 | |
4c52953f | 8990 | if (htab->multi_toc_needed) |
9b5ecbd0 | 8991 | { |
4c52953f AM |
8992 | /* If a code section has a function that uses the TOC then we need |
8993 | to use the right TOC (obviously). Also, make sure that .opd gets | |
8994 | the correct TOC value for R_PPC64_TOC relocs that don't have or | |
8995 | can't find their function symbol (shouldn't ever happen now). */ | |
8996 | if (isec->has_toc_reloc || (isec->flags & SEC_CODE) == 0) | |
8997 | { | |
8998 | if (elf_gp (isec->owner) != 0) | |
8999 | htab->toc_curr = elf_gp (isec->owner); | |
9000 | } | |
9001 | else if (htab->stub_group[isec->id].toc_off == 0) | |
9002 | { | |
9003 | int ret = toc_adjusting_stub_needed (info, isec); | |
9004 | if (ret < 0) | |
9005 | return FALSE; | |
9006 | else | |
9007 | isec->makes_toc_func_call = ret & 1; | |
9008 | } | |
9b5ecbd0 | 9009 | } |
ad8e1ba5 AM |
9010 | |
9011 | /* Functions that don't use the TOC can belong in any TOC group. | |
9012 | Use the last TOC base. This happens to make _init and _fini | |
9013 | pasting work. */ | |
9014 | htab->stub_group[isec->id].toc_off = htab->toc_curr; | |
9b5ecbd0 | 9015 | return TRUE; |
721956f4 AM |
9016 | } |
9017 | ||
9018 | /* See whether we can group stub sections together. Grouping stub | |
9019 | sections may result in fewer stubs. More importantly, we need to | |
9020 | put all .init* and .fini* stubs at the beginning of the .init or | |
9021 | .fini output sections respectively, because glibc splits the | |
9022 | _init and _fini functions into multiple parts. Putting a stub in | |
9023 | the middle of a function is not a good idea. */ | |
9024 | ||
9025 | static void | |
4ce794b7 AM |
9026 | group_sections (struct ppc_link_hash_table *htab, |
9027 | bfd_size_type stub_group_size, | |
9028 | bfd_boolean stubs_always_before_branch) | |
721956f4 | 9029 | { |
7c8fe5c4 AM |
9030 | asection **list; |
9031 | bfd_size_type stub14_group_size; | |
9032 | bfd_boolean suppress_size_errors; | |
9033 | ||
9034 | suppress_size_errors = FALSE; | |
9035 | stub14_group_size = stub_group_size; | |
9036 | if (stub_group_size == 1) | |
9037 | { | |
9038 | /* Default values. */ | |
9039 | if (stubs_always_before_branch) | |
9040 | { | |
9041 | stub_group_size = 0x1e00000; | |
9042 | stub14_group_size = 0x7800; | |
9043 | } | |
9044 | else | |
9045 | { | |
9046 | stub_group_size = 0x1c00000; | |
9047 | stub14_group_size = 0x7000; | |
9048 | } | |
9049 | suppress_size_errors = TRUE; | |
9050 | } | |
9051 | ||
9052 | list = htab->input_list + htab->top_index; | |
734b6cf9 | 9053 | do |
721956f4 | 9054 | { |
734b6cf9 AM |
9055 | asection *tail = *list; |
9056 | while (tail != NULL) | |
721956f4 | 9057 | { |
734b6cf9 AM |
9058 | asection *curr; |
9059 | asection *prev; | |
9060 | bfd_size_type total; | |
9061 | bfd_boolean big_sec; | |
9062 | bfd_vma curr_toc; | |
9063 | ||
9064 | curr = tail; | |
eea6121a | 9065 | total = tail->size; |
7c8fe5c4 AM |
9066 | big_sec = total > (ppc64_elf_section_data (tail)->has_14bit_branch |
9067 | ? stub14_group_size : stub_group_size); | |
9068 | if (big_sec && !suppress_size_errors) | |
5c3dead3 AM |
9069 | (*_bfd_error_handler) (_("%B section %A exceeds stub group size"), |
9070 | tail->owner, tail); | |
734b6cf9 AM |
9071 | curr_toc = htab->stub_group[tail->id].toc_off; |
9072 | ||
9073 | while ((prev = PREV_SEC (curr)) != NULL | |
9074 | && ((total += curr->output_offset - prev->output_offset) | |
7c8fe5c4 AM |
9075 | < (ppc64_elf_section_data (prev)->has_14bit_branch |
9076 | ? stub14_group_size : stub_group_size)) | |
ad8e1ba5 | 9077 | && htab->stub_group[prev->id].toc_off == curr_toc) |
734b6cf9 AM |
9078 | curr = prev; |
9079 | ||
9080 | /* OK, the size from the start of CURR to the end is less | |
9081 | than stub_group_size and thus can be handled by one stub | |
9082 | section. (or the tail section is itself larger than | |
9083 | stub_group_size, in which case we may be toast.) We | |
9084 | should really be keeping track of the total size of stubs | |
9085 | added here, as stubs contribute to the final output | |
9086 | section size. That's a little tricky, and this way will | |
9087 | only break if stubs added make the total size more than | |
9088 | 2^25, ie. for the default stub_group_size, if stubs total | |
9089 | more than 2097152 bytes, or nearly 75000 plt call stubs. */ | |
9090 | do | |
721956f4 AM |
9091 | { |
9092 | prev = PREV_SEC (tail); | |
734b6cf9 | 9093 | /* Set up this stub group. */ |
721956f4 AM |
9094 | htab->stub_group[tail->id].link_sec = curr; |
9095 | } | |
734b6cf9 AM |
9096 | while (tail != curr && (tail = prev) != NULL); |
9097 | ||
9098 | /* But wait, there's more! Input sections up to stub_group_size | |
9099 | bytes before the stub section can be handled by it too. | |
9100 | Don't do this if we have a really large section after the | |
9101 | stubs, as adding more stubs increases the chance that | |
9102 | branches may not reach into the stub section. */ | |
9103 | if (!stubs_always_before_branch && !big_sec) | |
9104 | { | |
9105 | total = 0; | |
9106 | while (prev != NULL | |
9107 | && ((total += tail->output_offset - prev->output_offset) | |
7c8fe5c4 AM |
9108 | < (ppc64_elf_section_data (prev)->has_14bit_branch |
9109 | ? stub14_group_size : stub_group_size)) | |
734b6cf9 AM |
9110 | && htab->stub_group[prev->id].toc_off == curr_toc) |
9111 | { | |
9112 | tail = prev; | |
9113 | prev = PREV_SEC (tail); | |
9114 | htab->stub_group[tail->id].link_sec = curr; | |
9115 | } | |
9116 | } | |
9117 | tail = prev; | |
721956f4 AM |
9118 | } |
9119 | } | |
734b6cf9 AM |
9120 | while (list-- != htab->input_list); |
9121 | free (htab->input_list); | |
721956f4 AM |
9122 | #undef PREV_SEC |
9123 | } | |
9124 | ||
721956f4 AM |
9125 | /* Determine and set the size of the stub section for a final link. |
9126 | ||
9127 | The basic idea here is to examine all the relocations looking for | |
9128 | PC-relative calls to a target that is unreachable with a "bl" | |
9129 | instruction. */ | |
9130 | ||
b34976b6 | 9131 | bfd_boolean |
4ce794b7 | 9132 | ppc64_elf_size_stubs (bfd *output_bfd, |
4ce794b7 AM |
9133 | struct bfd_link_info *info, |
9134 | bfd_signed_vma group_size, | |
9135 | asection *(*add_stub_section) (const char *, asection *), | |
9136 | void (*layout_sections_again) (void)) | |
721956f4 AM |
9137 | { |
9138 | bfd_size_type stub_group_size; | |
b34976b6 | 9139 | bfd_boolean stubs_always_before_branch; |
721956f4 AM |
9140 | struct ppc_link_hash_table *htab = ppc_hash_table (info); |
9141 | ||
9142 | /* Stash our params away. */ | |
721956f4 AM |
9143 | htab->add_stub_section = add_stub_section; |
9144 | htab->layout_sections_again = layout_sections_again; | |
9145 | stubs_always_before_branch = group_size < 0; | |
9146 | if (group_size < 0) | |
9147 | stub_group_size = -group_size; | |
9148 | else | |
9149 | stub_group_size = group_size; | |
721956f4 AM |
9150 | |
9151 | group_sections (htab, stub_group_size, stubs_always_before_branch); | |
9152 | ||
721956f4 AM |
9153 | while (1) |
9154 | { | |
9155 | bfd *input_bfd; | |
9156 | unsigned int bfd_indx; | |
9157 | asection *stub_sec; | |
721956f4 AM |
9158 | |
9159 | htab->stub_iteration += 1; | |
721956f4 AM |
9160 | |
9161 | for (input_bfd = info->input_bfds, bfd_indx = 0; | |
9162 | input_bfd != NULL; | |
9163 | input_bfd = input_bfd->link_next, bfd_indx++) | |
9164 | { | |
9165 | Elf_Internal_Shdr *symtab_hdr; | |
9166 | asection *section; | |
6cdc0ccc | 9167 | Elf_Internal_Sym *local_syms = NULL; |
721956f4 | 9168 | |
67f93c31 AM |
9169 | if (!is_ppc64_elf_target (input_bfd->xvec)) |
9170 | continue; | |
9171 | ||
721956f4 AM |
9172 | /* We'll need the symbol table in a second. */ |
9173 | symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr; | |
9174 | if (symtab_hdr->sh_info == 0) | |
9175 | continue; | |
9176 | ||
721956f4 AM |
9177 | /* Walk over each section attached to the input bfd. */ |
9178 | for (section = input_bfd->sections; | |
9179 | section != NULL; | |
9180 | section = section->next) | |
9181 | { | |
721956f4 | 9182 | Elf_Internal_Rela *internal_relocs, *irelaend, *irela; |
721956f4 AM |
9183 | |
9184 | /* If there aren't any relocs, then there's nothing more | |
9185 | to do. */ | |
9186 | if ((section->flags & SEC_RELOC) == 0 | |
12c0f757 AM |
9187 | || (section->flags & SEC_ALLOC) == 0 |
9188 | || (section->flags & SEC_LOAD) == 0 | |
9189 | || (section->flags & SEC_CODE) == 0 | |
721956f4 AM |
9190 | || section->reloc_count == 0) |
9191 | continue; | |
9192 | ||
9193 | /* If this section is a link-once section that will be | |
9194 | discarded, then don't create any stubs. */ | |
9195 | if (section->output_section == NULL | |
9196 | || section->output_section->owner != output_bfd) | |
9197 | continue; | |
9198 | ||
1e2f5b6e AM |
9199 | /* Get the relocs. */ |
9200 | internal_relocs | |
4ce794b7 | 9201 | = _bfd_elf_link_read_relocs (input_bfd, section, NULL, NULL, |
45d6a902 | 9202 | info->keep_memory); |
721956f4 | 9203 | if (internal_relocs == NULL) |
1e2f5b6e | 9204 | goto error_ret_free_local; |
721956f4 AM |
9205 | |
9206 | /* Now examine each relocation. */ | |
9207 | irela = internal_relocs; | |
9208 | irelaend = irela + section->reloc_count; | |
9209 | for (; irela < irelaend; irela++) | |
9210 | { | |
4ce794b7 AM |
9211 | enum elf_ppc64_reloc_type r_type; |
9212 | unsigned int r_indx; | |
721956f4 AM |
9213 | enum ppc_stub_type stub_type; |
9214 | struct ppc_stub_hash_entry *stub_entry; | |
8387904d | 9215 | asection *sym_sec, *code_sec; |
721956f4 AM |
9216 | bfd_vma sym_value; |
9217 | bfd_vma destination; | |
8843416a | 9218 | bfd_boolean ok_dest; |
721956f4 | 9219 | struct ppc_link_hash_entry *hash; |
8387904d | 9220 | struct ppc_link_hash_entry *fdh; |
411e1bfb AM |
9221 | struct elf_link_hash_entry *h; |
9222 | Elf_Internal_Sym *sym; | |
721956f4 AM |
9223 | char *stub_name; |
9224 | const asection *id_sec; | |
8387904d | 9225 | long *opd_adjust; |
721956f4 AM |
9226 | |
9227 | r_type = ELF64_R_TYPE (irela->r_info); | |
9228 | r_indx = ELF64_R_SYM (irela->r_info); | |
9229 | ||
4ce794b7 | 9230 | if (r_type >= R_PPC64_max) |
721956f4 AM |
9231 | { |
9232 | bfd_set_error (bfd_error_bad_value); | |
6cdc0ccc | 9233 | goto error_ret_free_internal; |
721956f4 AM |
9234 | } |
9235 | ||
9236 | /* Only look for stubs on branch instructions. */ | |
4ce794b7 AM |
9237 | if (r_type != R_PPC64_REL24 |
9238 | && r_type != R_PPC64_REL14 | |
9239 | && r_type != R_PPC64_REL14_BRTAKEN | |
9240 | && r_type != R_PPC64_REL14_BRNTAKEN) | |
721956f4 AM |
9241 | continue; |
9242 | ||
9243 | /* Now determine the call target, its name, value, | |
9244 | section. */ | |
411e1bfb AM |
9245 | if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, |
9246 | r_indx, input_bfd)) | |
9247 | goto error_ret_free_internal; | |
9248 | hash = (struct ppc_link_hash_entry *) h; | |
9249 | ||
8843416a | 9250 | ok_dest = FALSE; |
8387904d | 9251 | fdh = NULL; |
7fe2b9a6 | 9252 | sym_value = 0; |
411e1bfb | 9253 | if (hash == NULL) |
721956f4 | 9254 | { |
411e1bfb | 9255 | sym_value = sym->st_value; |
8843416a | 9256 | ok_dest = TRUE; |
721956f4 | 9257 | } |
7fe2b9a6 AM |
9258 | else if (hash->elf.root.type == bfd_link_hash_defined |
9259 | || hash->elf.root.type == bfd_link_hash_defweak) | |
9260 | { | |
9261 | sym_value = hash->elf.root.u.def.value; | |
9262 | if (sym_sec->output_section != NULL) | |
9263 | ok_dest = TRUE; | |
9264 | } | |
9265 | else if (hash->elf.root.type == bfd_link_hash_undefweak | |
9266 | || hash->elf.root.type == bfd_link_hash_undefined) | |
721956f4 | 9267 | { |
99877b66 | 9268 | /* Recognise an old ABI func code entry sym, and |
7fe2b9a6 AM |
9269 | use the func descriptor sym instead if it is |
9270 | defined. */ | |
ceb1f1ef | 9271 | if (hash->elf.root.root.string[0] == '.' |
8387904d AM |
9272 | && (fdh = get_fdh (hash, htab)) != NULL) |
9273 | { | |
8387904d AM |
9274 | if (fdh->elf.root.type == bfd_link_hash_defined |
9275 | || fdh->elf.root.type == bfd_link_hash_defweak) | |
9276 | { | |
9277 | sym_sec = fdh->elf.root.u.def.section; | |
9278 | sym_value = fdh->elf.root.u.def.value; | |
9279 | if (sym_sec->output_section != NULL) | |
9280 | ok_dest = TRUE; | |
9281 | } | |
99877b66 AM |
9282 | else |
9283 | fdh = NULL; | |
8387904d | 9284 | } |
7fe2b9a6 AM |
9285 | } |
9286 | else | |
9287 | { | |
9288 | bfd_set_error (bfd_error_bad_value); | |
9289 | goto error_ret_free_internal; | |
721956f4 AM |
9290 | } |
9291 | ||
8843416a AM |
9292 | destination = 0; |
9293 | if (ok_dest) | |
9294 | { | |
9295 | sym_value += irela->r_addend; | |
9296 | destination = (sym_value | |
9297 | + sym_sec->output_offset | |
9298 | + sym_sec->output_section->vma); | |
9299 | } | |
9300 | ||
8387904d AM |
9301 | code_sec = sym_sec; |
9302 | opd_adjust = get_opd_info (sym_sec); | |
9303 | if (opd_adjust != NULL) | |
9304 | { | |
9305 | bfd_vma dest; | |
9306 | ||
9307 | if (hash == NULL) | |
9308 | { | |
3f764659 | 9309 | long adjust = opd_adjust[sym_value / 8]; |
8387904d AM |
9310 | if (adjust == -1) |
9311 | continue; | |
9312 | sym_value += adjust; | |
9313 | } | |
9314 | dest = opd_entry_value (sym_sec, sym_value, | |
9315 | &code_sec, &sym_value); | |
9316 | if (dest != (bfd_vma) -1) | |
9317 | { | |
9318 | destination = dest; | |
9319 | if (fdh != NULL) | |
9320 | { | |
9321 | /* Fixup old ABI sym to point at code | |
9322 | entry. */ | |
99877b66 | 9323 | hash->elf.root.type = bfd_link_hash_defweak; |
8387904d AM |
9324 | hash->elf.root.u.def.section = code_sec; |
9325 | hash->elf.root.u.def.value = sym_value; | |
9326 | } | |
9327 | } | |
9328 | } | |
9329 | ||
721956f4 AM |
9330 | /* Determine what (if any) linker stub is needed. */ |
9331 | stub_type = ppc_type_of_stub (section, irela, &hash, | |
9332 | destination); | |
ad8e1ba5 AM |
9333 | |
9334 | if (stub_type != ppc_stub_plt_call) | |
9335 | { | |
9336 | /* Check whether we need a TOC adjusting stub. | |
9337 | Since the linker pastes together pieces from | |
9338 | different object files when creating the | |
9339 | _init and _fini functions, it may be that a | |
9340 | call to what looks like a local sym is in | |
9341 | fact a call needing a TOC adjustment. */ | |
8387904d AM |
9342 | if (code_sec != NULL |
9343 | && code_sec->output_section != NULL | |
9344 | && (htab->stub_group[code_sec->id].toc_off | |
9b5ecbd0 | 9345 | != htab->stub_group[section->id].toc_off) |
4c52953f AM |
9346 | && (code_sec->has_toc_reloc |
9347 | || code_sec->makes_toc_func_call)) | |
ad8e1ba5 AM |
9348 | stub_type = ppc_stub_long_branch_r2off; |
9349 | } | |
9350 | ||
721956f4 AM |
9351 | if (stub_type == ppc_stub_none) |
9352 | continue; | |
9353 | ||
411e1bfb AM |
9354 | /* __tls_get_addr calls might be eliminated. */ |
9355 | if (stub_type != ppc_stub_plt_call | |
9356 | && hash != NULL | |
8387904d AM |
9357 | && (hash == htab->tls_get_addr |
9358 | || hash == htab->tls_get_addr_fd) | |
411e1bfb AM |
9359 | && section->has_tls_reloc |
9360 | && irela != internal_relocs) | |
9361 | { | |
9362 | /* Get tls info. */ | |
e7b938ca | 9363 | char *tls_mask; |
411e1bfb | 9364 | |
0d4792f7 | 9365 | if (!get_tls_mask (&tls_mask, NULL, &local_syms, |
411e1bfb AM |
9366 | irela - 1, input_bfd)) |
9367 | goto error_ret_free_internal; | |
e7b938ca | 9368 | if (*tls_mask != 0) |
411e1bfb AM |
9369 | continue; |
9370 | } | |
9371 | ||
721956f4 AM |
9372 | /* Support for grouping stub sections. */ |
9373 | id_sec = htab->stub_group[section->id].link_sec; | |
9374 | ||
9375 | /* Get the name of this stub. */ | |
9376 | stub_name = ppc_stub_name (id_sec, sym_sec, hash, irela); | |
9377 | if (!stub_name) | |
9378 | goto error_ret_free_internal; | |
9379 | ||
9380 | stub_entry = ppc_stub_hash_lookup (&htab->stub_hash_table, | |
b34976b6 | 9381 | stub_name, FALSE, FALSE); |
721956f4 AM |
9382 | if (stub_entry != NULL) |
9383 | { | |
9384 | /* The proper stub has already been created. */ | |
9385 | free (stub_name); | |
9386 | continue; | |
9387 | } | |
9388 | ||
9389 | stub_entry = ppc_add_stub (stub_name, section, htab); | |
9390 | if (stub_entry == NULL) | |
9391 | { | |
9392 | free (stub_name); | |
6cdc0ccc AM |
9393 | error_ret_free_internal: |
9394 | if (elf_section_data (section)->relocs == NULL) | |
9395 | free (internal_relocs); | |
9396 | error_ret_free_local: | |
9397 | if (local_syms != NULL | |
9398 | && (symtab_hdr->contents | |
9399 | != (unsigned char *) local_syms)) | |
9400 | free (local_syms); | |
b34976b6 | 9401 | return FALSE; |
721956f4 AM |
9402 | } |
9403 | ||
ad8e1ba5 | 9404 | stub_entry->stub_type = stub_type; |
721956f4 | 9405 | stub_entry->target_value = sym_value; |
8387904d | 9406 | stub_entry->target_section = code_sec; |
721956f4 | 9407 | stub_entry->h = hash; |
411e1bfb | 9408 | stub_entry->addend = irela->r_addend; |
ee75fd95 AM |
9409 | |
9410 | if (stub_entry->h != NULL) | |
9411 | htab->stub_globals += 1; | |
721956f4 AM |
9412 | } |
9413 | ||
9414 | /* We're done with the internal relocs, free them. */ | |
6cdc0ccc | 9415 | if (elf_section_data (section)->relocs != internal_relocs) |
1e2f5b6e | 9416 | free (internal_relocs); |
721956f4 | 9417 | } |
6cdc0ccc AM |
9418 | |
9419 | if (local_syms != NULL | |
9420 | && symtab_hdr->contents != (unsigned char *) local_syms) | |
9421 | { | |
9422 | if (!info->keep_memory) | |
9423 | free (local_syms); | |
9424 | else | |
9425 | symtab_hdr->contents = (unsigned char *) local_syms; | |
9426 | } | |
721956f4 AM |
9427 | } |
9428 | ||
5c3dead3 | 9429 | /* We may have added some stubs. Find out the new size of the |
721956f4 AM |
9430 | stub sections. */ |
9431 | for (stub_sec = htab->stub_bfd->sections; | |
9432 | stub_sec != NULL; | |
9433 | stub_sec = stub_sec->next) | |
e717da7e | 9434 | if ((stub_sec->flags & SEC_LINKER_CREATED) == 0) |
ee75fd95 | 9435 | { |
5c3dead3 | 9436 | stub_sec->rawsize = stub_sec->size; |
ee75fd95 AM |
9437 | stub_sec->size = 0; |
9438 | stub_sec->reloc_count = 0; | |
84f5d08e | 9439 | stub_sec->flags &= ~SEC_RELOC; |
ee75fd95 | 9440 | } |
eea6121a AM |
9441 | |
9442 | htab->brlt->size = 0; | |
84f5d08e AM |
9443 | htab->brlt->reloc_count = 0; |
9444 | htab->brlt->flags &= ~SEC_RELOC; | |
ee75fd95 | 9445 | if (htab->relbrlt != NULL) |
eea6121a | 9446 | htab->relbrlt->size = 0; |
721956f4 | 9447 | |
63bc6f6c | 9448 | bfd_hash_traverse (&htab->stub_hash_table, ppc_size_one_stub, info); |
721956f4 | 9449 | |
5c3dead3 AM |
9450 | for (stub_sec = htab->stub_bfd->sections; |
9451 | stub_sec != NULL; | |
9452 | stub_sec = stub_sec->next) | |
9453 | if ((stub_sec->flags & SEC_LINKER_CREATED) == 0 | |
9454 | && stub_sec->rawsize != stub_sec->size) | |
9455 | break; | |
9456 | ||
9457 | /* Exit from this loop when no stubs have been added, and no stubs | |
9458 | have changed size. */ | |
9459 | if (stub_sec == NULL) | |
9460 | break; | |
9461 | ||
721956f4 AM |
9462 | /* Ask the linker to do its stuff. */ |
9463 | (*htab->layout_sections_again) (); | |
9464 | } | |
9465 | ||
c456f082 | 9466 | /* It would be nice to strip htab->brlt from the output if the |
afbe61cf AM |
9467 | section is empty, but it's too late. If we strip sections here, |
9468 | the dynamic symbol table is corrupted since the section symbol | |
9469 | for the stripped section isn't written. */ | |
721956f4 | 9470 | |
b34976b6 | 9471 | return TRUE; |
721956f4 AM |
9472 | } |
9473 | ||
9474 | /* Called after we have determined section placement. If sections | |
805fc799 | 9475 | move, we'll be called again. Provide a value for TOCstart. */ |
721956f4 | 9476 | |
805fc799 | 9477 | bfd_vma |
4ce794b7 | 9478 | ppc64_elf_toc (bfd *obfd) |
721956f4 | 9479 | { |
805fc799 AM |
9480 | asection *s; |
9481 | bfd_vma TOCstart; | |
721956f4 | 9482 | |
805fc799 AM |
9483 | /* The TOC consists of sections .got, .toc, .tocbss, .plt in that |
9484 | order. The TOC starts where the first of these sections starts. */ | |
9485 | s = bfd_get_section_by_name (obfd, ".got"); | |
9486 | if (s == NULL) | |
9487 | s = bfd_get_section_by_name (obfd, ".toc"); | |
9488 | if (s == NULL) | |
9489 | s = bfd_get_section_by_name (obfd, ".tocbss"); | |
9490 | if (s == NULL) | |
9491 | s = bfd_get_section_by_name (obfd, ".plt"); | |
9492 | if (s == NULL) | |
9493 | { | |
9494 | /* This may happen for | |
9495 | o references to TOC base (SYM@toc / TOC[tc0]) without a | |
9496 | .toc directive | |
9497 | o bad linker script | |
9498 | o --gc-sections and empty TOC sections | |
9499 | ||
9500 | FIXME: Warn user? */ | |
9501 | ||
9502 | /* Look for a likely section. We probably won't even be | |
9503 | using TOCstart. */ | |
9504 | for (s = obfd->sections; s != NULL; s = s->next) | |
9505 | if ((s->flags & (SEC_ALLOC | SEC_SMALL_DATA | SEC_READONLY)) | |
9506 | == (SEC_ALLOC | SEC_SMALL_DATA)) | |
9507 | break; | |
721956f4 | 9508 | if (s == NULL) |
805fc799 AM |
9509 | for (s = obfd->sections; s != NULL; s = s->next) |
9510 | if ((s->flags & (SEC_ALLOC | SEC_SMALL_DATA)) | |
9511 | == (SEC_ALLOC | SEC_SMALL_DATA)) | |
9512 | break; | |
721956f4 | 9513 | if (s == NULL) |
805fc799 AM |
9514 | for (s = obfd->sections; s != NULL; s = s->next) |
9515 | if ((s->flags & (SEC_ALLOC | SEC_READONLY)) == SEC_ALLOC) | |
9516 | break; | |
721956f4 | 9517 | if (s == NULL) |
805fc799 AM |
9518 | for (s = obfd->sections; s != NULL; s = s->next) |
9519 | if ((s->flags & SEC_ALLOC) == SEC_ALLOC) | |
9520 | break; | |
9521 | } | |
721956f4 | 9522 | |
805fc799 AM |
9523 | TOCstart = 0; |
9524 | if (s != NULL) | |
9525 | TOCstart = s->output_section->vma + s->output_offset; | |
721956f4 | 9526 | |
805fc799 | 9527 | return TOCstart; |
721956f4 AM |
9528 | } |
9529 | ||
9530 | /* Build all the stubs associated with the current output file. | |
9531 | The stubs are kept in a hash table attached to the main linker | |
9532 | hash table. This function is called via gldelf64ppc_finish. */ | |
9533 | ||
b34976b6 | 9534 | bfd_boolean |
4ce794b7 AM |
9535 | ppc64_elf_build_stubs (bfd_boolean emit_stub_syms, |
9536 | struct bfd_link_info *info, | |
9537 | char **stats) | |
5d1634d7 AM |
9538 | { |
9539 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
721956f4 | 9540 | asection *stub_sec; |
5d1634d7 | 9541 | bfd_byte *p; |
e717da7e | 9542 | int stub_sec_count = 0; |
5d1634d7 | 9543 | |
ad8e1ba5 | 9544 | htab->emit_stub_syms = emit_stub_syms; |
eea6121a AM |
9545 | |
9546 | /* Allocate memory to hold the linker stubs. */ | |
721956f4 AM |
9547 | for (stub_sec = htab->stub_bfd->sections; |
9548 | stub_sec != NULL; | |
9549 | stub_sec = stub_sec->next) | |
eea6121a AM |
9550 | if ((stub_sec->flags & SEC_LINKER_CREATED) == 0 |
9551 | && stub_sec->size != 0) | |
e717da7e | 9552 | { |
eea6121a AM |
9553 | stub_sec->contents = bfd_zalloc (htab->stub_bfd, stub_sec->size); |
9554 | if (stub_sec->contents == NULL) | |
9555 | return FALSE; | |
9556 | /* We want to check that built size is the same as calculated | |
9557 | size. rawsize is a convenient location to use. */ | |
9558 | stub_sec->rawsize = stub_sec->size; | |
9559 | stub_sec->size = 0; | |
e717da7e | 9560 | } |
5d1634d7 | 9561 | |
23eb7e01 | 9562 | if (htab->glink != NULL && htab->glink->size != 0) |
5d1634d7 | 9563 | { |
9f951329 | 9564 | unsigned int indx; |
ad8e1ba5 | 9565 | bfd_vma plt0; |
9f951329 | 9566 | |
721956f4 | 9567 | /* Build the .glink plt call stub. */ |
97b639ba AM |
9568 | if (htab->emit_stub_syms) |
9569 | { | |
9570 | struct elf_link_hash_entry *h; | |
9571 | h = elf_link_hash_lookup (&htab->elf, "__glink", TRUE, FALSE, FALSE); | |
9572 | if (h == NULL) | |
9573 | return FALSE; | |
9574 | if (h->root.type == bfd_link_hash_new) | |
9575 | { | |
9576 | h->root.type = bfd_link_hash_defined; | |
9577 | h->root.u.def.section = htab->glink; | |
ee4bf8d2 | 9578 | h->root.u.def.value = 8; |
f5385ebf AM |
9579 | h->ref_regular = 1; |
9580 | h->def_regular = 1; | |
9581 | h->ref_regular_nonweak = 1; | |
9582 | h->forced_local = 1; | |
9583 | h->non_elf = 0; | |
97b639ba AM |
9584 | } |
9585 | } | |
4ce794b7 | 9586 | p = htab->glink->contents; |
ee4bf8d2 AM |
9587 | plt0 = (htab->plt->output_section->vma |
9588 | + htab->plt->output_offset | |
9589 | - (htab->glink->output_section->vma | |
9590 | + htab->glink->output_offset | |
9591 | + 16)); | |
9592 | bfd_put_64 (htab->glink->owner, plt0, p); | |
9593 | p += 8; | |
9594 | bfd_put_32 (htab->glink->owner, MFLR_R12, p); | |
ad8e1ba5 | 9595 | p += 4; |
ee4bf8d2 | 9596 | bfd_put_32 (htab->glink->owner, BCL_20_31, p); |
ad8e1ba5 | 9597 | p += 4; |
ee4bf8d2 | 9598 | bfd_put_32 (htab->glink->owner, MFLR_R11, p); |
ad8e1ba5 | 9599 | p += 4; |
ee4bf8d2 | 9600 | bfd_put_32 (htab->glink->owner, LD_R2_M16R11, p); |
ad8e1ba5 | 9601 | p += 4; |
ee4bf8d2 | 9602 | bfd_put_32 (htab->glink->owner, MTLR_R12, p); |
ad8e1ba5 | 9603 | p += 4; |
ee4bf8d2 | 9604 | bfd_put_32 (htab->glink->owner, ADD_R12_R2_R11, p); |
ad8e1ba5 | 9605 | p += 4; |
ee4bf8d2 | 9606 | bfd_put_32 (htab->glink->owner, LD_R11_0R12, p); |
ad8e1ba5 | 9607 | p += 4; |
4ce794b7 | 9608 | bfd_put_32 (htab->glink->owner, LD_R2_0R12 | 8, p); |
ad8e1ba5 | 9609 | p += 4; |
4ce794b7 | 9610 | bfd_put_32 (htab->glink->owner, MTCTR_R11, p); |
ad8e1ba5 | 9611 | p += 4; |
4ce794b7 | 9612 | bfd_put_32 (htab->glink->owner, LD_R11_0R12 | 16, p); |
ad8e1ba5 | 9613 | p += 4; |
4ce794b7 | 9614 | bfd_put_32 (htab->glink->owner, BCTR, p); |
ad8e1ba5 | 9615 | p += 4; |
ee4bf8d2 AM |
9616 | while (p - htab->glink->contents < GLINK_CALL_STUB_SIZE) |
9617 | { | |
9618 | bfd_put_32 (htab->glink->owner, NOP, p); | |
9619 | p += 4; | |
9620 | } | |
ad8e1ba5 | 9621 | |
9f951329 AM |
9622 | /* Build the .glink lazy link call stubs. */ |
9623 | indx = 0; | |
eea6121a | 9624 | while (p < htab->glink->contents + htab->glink->size) |
9f951329 AM |
9625 | { |
9626 | if (indx < 0x8000) | |
9627 | { | |
4ce794b7 | 9628 | bfd_put_32 (htab->glink->owner, LI_R0_0 | indx, p); |
9f951329 AM |
9629 | p += 4; |
9630 | } | |
9631 | else | |
9632 | { | |
4ce794b7 | 9633 | bfd_put_32 (htab->glink->owner, LIS_R0_0 | PPC_HI (indx), p); |
9f951329 | 9634 | p += 4; |
4ce794b7 | 9635 | bfd_put_32 (htab->glink->owner, ORI_R0_R0_0 | PPC_LO (indx), p); |
9f951329 AM |
9636 | p += 4; |
9637 | } | |
4ce794b7 | 9638 | bfd_put_32 (htab->glink->owner, |
ee4bf8d2 | 9639 | B_DOT | ((htab->glink->contents - p + 8) & 0x3fffffc), p); |
a16d5acb | 9640 | indx++; |
9f951329 AM |
9641 | p += 4; |
9642 | } | |
eea6121a | 9643 | htab->glink->rawsize = p - htab->glink->contents; |
5d1634d7 | 9644 | } |
5d1634d7 | 9645 | |
eea6121a | 9646 | if (htab->brlt->size != 0) |
721956f4 | 9647 | { |
4ce794b7 | 9648 | htab->brlt->contents = bfd_zalloc (htab->brlt->owner, |
eea6121a | 9649 | htab->brlt->size); |
4ce794b7 | 9650 | if (htab->brlt->contents == NULL) |
b34976b6 | 9651 | return FALSE; |
721956f4 | 9652 | } |
ee75fd95 | 9653 | if (htab->relbrlt != NULL && htab->relbrlt->size != 0) |
63bc6f6c AM |
9654 | { |
9655 | htab->relbrlt->contents = bfd_zalloc (htab->relbrlt->owner, | |
eea6121a | 9656 | htab->relbrlt->size); |
63bc6f6c AM |
9657 | if (htab->relbrlt->contents == NULL) |
9658 | return FALSE; | |
9659 | } | |
5d1634d7 | 9660 | |
721956f4 AM |
9661 | /* Build the stubs as directed by the stub hash table. */ |
9662 | bfd_hash_traverse (&htab->stub_hash_table, ppc_build_one_stub, info); | |
5d1634d7 | 9663 | |
aa8a7074 AM |
9664 | if (htab->relbrlt != NULL) |
9665 | htab->relbrlt->reloc_count = 0; | |
9666 | ||
721956f4 AM |
9667 | for (stub_sec = htab->stub_bfd->sections; |
9668 | stub_sec != NULL; | |
9669 | stub_sec = stub_sec->next) | |
e717da7e AM |
9670 | if ((stub_sec->flags & SEC_LINKER_CREATED) == 0) |
9671 | { | |
9672 | stub_sec_count += 1; | |
eea6121a | 9673 | if (stub_sec->rawsize != stub_sec->size) |
e717da7e AM |
9674 | break; |
9675 | } | |
5d1634d7 | 9676 | |
721956f4 | 9677 | if (stub_sec != NULL |
eea6121a | 9678 | || htab->glink->rawsize != htab->glink->size) |
5d1634d7 | 9679 | { |
b34976b6 | 9680 | htab->stub_error = TRUE; |
721956f4 | 9681 | (*_bfd_error_handler) (_("stubs don't match calculated size")); |
5d1634d7 | 9682 | } |
721956f4 | 9683 | |
d2a300cf AM |
9684 | if (htab->stub_error) |
9685 | return FALSE; | |
9686 | ||
9687 | if (stats != NULL) | |
9688 | { | |
9689 | *stats = bfd_malloc (500); | |
9690 | if (*stats == NULL) | |
9691 | return FALSE; | |
9692 | ||
ee75fd95 | 9693 | sprintf (*stats, _("linker stubs in %u group%s\n" |
d2a300cf AM |
9694 | " branch %lu\n" |
9695 | " toc adjust %lu\n" | |
9696 | " long branch %lu\n" | |
9697 | " long toc adj %lu\n" | |
9698 | " plt call %lu"), | |
e717da7e | 9699 | stub_sec_count, |
ee75fd95 | 9700 | stub_sec_count == 1 ? "" : "s", |
4ce794b7 AM |
9701 | htab->stub_count[ppc_stub_long_branch - 1], |
9702 | htab->stub_count[ppc_stub_long_branch_r2off - 1], | |
9703 | htab->stub_count[ppc_stub_plt_branch - 1], | |
9704 | htab->stub_count[ppc_stub_plt_branch_r2off - 1], | |
9705 | htab->stub_count[ppc_stub_plt_call - 1]); | |
d2a300cf AM |
9706 | } |
9707 | return TRUE; | |
5bd4f169 AM |
9708 | } |
9709 | ||
99877b66 AM |
9710 | /* This function undoes the changes made by add_symbol_adjust. */ |
9711 | ||
9712 | static bfd_boolean | |
9713 | undo_symbol_twiddle (struct elf_link_hash_entry *h, void *inf ATTRIBUTE_UNUSED) | |
9714 | { | |
9715 | struct ppc_link_hash_entry *eh; | |
9716 | ||
9717 | if (h->root.type == bfd_link_hash_indirect) | |
9718 | return TRUE; | |
9719 | ||
9720 | if (h->root.type == bfd_link_hash_warning) | |
9721 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
9722 | ||
9723 | eh = (struct ppc_link_hash_entry *) h; | |
9724 | if (eh->elf.root.type != bfd_link_hash_undefweak || !eh->was_undefined) | |
9725 | return TRUE; | |
9726 | ||
9727 | eh->elf.root.type = bfd_link_hash_undefined; | |
9728 | return TRUE; | |
9729 | } | |
9730 | ||
9731 | void | |
9732 | ppc64_elf_restore_symbols (struct bfd_link_info *info) | |
9733 | { | |
9734 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
9735 | elf_link_hash_traverse (&htab->elf, undo_symbol_twiddle, info); | |
9736 | } | |
9737 | ||
60124e18 AM |
9738 | /* What to do when ld finds relocations against symbols defined in |
9739 | discarded sections. */ | |
9740 | ||
9741 | static unsigned int | |
9742 | ppc64_elf_action_discarded (asection *sec) | |
9743 | { | |
9744 | if (strcmp (".opd", sec->name) == 0) | |
9745 | return 0; | |
9746 | ||
9747 | if (strcmp (".toc", sec->name) == 0) | |
9748 | return 0; | |
9749 | ||
bce50a28 JJ |
9750 | if (strcmp (".toc1", sec->name) == 0) |
9751 | return 0; | |
9752 | ||
60124e18 AM |
9753 | return _bfd_elf_default_action_discarded (sec); |
9754 | } | |
9755 | ||
5bd4f169 AM |
9756 | /* The RELOCATE_SECTION function is called by the ELF backend linker |
9757 | to handle the relocations for a section. | |
9758 | ||
9759 | The relocs are always passed as Rela structures; if the section | |
9760 | actually uses Rel structures, the r_addend field will always be | |
9761 | zero. | |
9762 | ||
9763 | This function is responsible for adjust the section contents as | |
9764 | necessary, and (if using Rela relocs and generating a | |
1049f94e | 9765 | relocatable output file) adjusting the reloc addend as |
5bd4f169 AM |
9766 | necessary. |
9767 | ||
9768 | This function does not have to worry about setting the reloc | |
9769 | address or the reloc symbol index. | |
9770 | ||
9771 | LOCAL_SYMS is a pointer to the swapped in local symbols. | |
9772 | ||
9773 | LOCAL_SECTIONS is an array giving the section in the input file | |
9774 | corresponding to the st_shndx field of each local symbol. | |
9775 | ||
9776 | The global hash table entry for the global symbols can be found | |
9777 | via elf_sym_hashes (input_bfd). | |
9778 | ||
1049f94e | 9779 | When generating relocatable output, this function must handle |
5bd4f169 AM |
9780 | STB_LOCAL/STT_SECTION symbols specially. The output symbol is |
9781 | going to be the section symbol corresponding to the output | |
9782 | section, which means that the addend must be adjusted | |
9783 | accordingly. */ | |
9784 | ||
b34976b6 | 9785 | static bfd_boolean |
4ce794b7 AM |
9786 | ppc64_elf_relocate_section (bfd *output_bfd, |
9787 | struct bfd_link_info *info, | |
9788 | bfd *input_bfd, | |
9789 | asection *input_section, | |
9790 | bfd_byte *contents, | |
9791 | Elf_Internal_Rela *relocs, | |
9792 | Elf_Internal_Sym *local_syms, | |
9793 | asection **local_sections) | |
5bd4f169 | 9794 | { |
65f38f15 | 9795 | struct ppc_link_hash_table *htab; |
5bd4f169 AM |
9796 | Elf_Internal_Shdr *symtab_hdr; |
9797 | struct elf_link_hash_entry **sym_hashes; | |
5bd4f169 AM |
9798 | Elf_Internal_Rela *rel; |
9799 | Elf_Internal_Rela *relend; | |
411e1bfb AM |
9800 | Elf_Internal_Rela outrel; |
9801 | bfd_byte *loc; | |
411e1bfb | 9802 | struct got_entry **local_got_ents; |
5bd4f169 | 9803 | bfd_vma TOCstart; |
b34976b6 AM |
9804 | bfd_boolean ret = TRUE; |
9805 | bfd_boolean is_opd; | |
96e0dda4 | 9806 | /* Disabled until we sort out how ld should choose 'y' vs 'at'. */ |
b34976b6 | 9807 | bfd_boolean is_power4 = FALSE; |
4fe5ca5b | 9808 | bfd_vma d_offset = (bfd_big_endian (output_bfd) ? 2 : 0); |
5bd4f169 | 9809 | |
65f38f15 | 9810 | /* Initialize howto table if needed. */ |
5bd4f169 | 9811 | if (!ppc64_elf_howto_table[R_PPC64_ADDR32]) |
5bd4f169 AM |
9812 | ppc_howto_init (); |
9813 | ||
65f38f15 | 9814 | htab = ppc_hash_table (info); |
ee75fd95 AM |
9815 | |
9816 | /* Don't relocate stub sections. */ | |
9817 | if (input_section->owner == htab->stub_bfd) | |
9818 | return TRUE; | |
9819 | ||
411e1bfb | 9820 | local_got_ents = elf_local_got_ents (input_bfd); |
5bd4f169 | 9821 | TOCstart = elf_gp (output_bfd); |
5bd4f169 AM |
9822 | symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr; |
9823 | sym_hashes = elf_sym_hashes (input_bfd); | |
7c8fe5c4 | 9824 | is_opd = ppc64_elf_section_data (input_section)->sec_type == sec_opd; |
65f38f15 | 9825 | |
5bd4f169 AM |
9826 | rel = relocs; |
9827 | relend = relocs + input_section->reloc_count; | |
9828 | for (; rel < relend; rel++) | |
9829 | { | |
04c9666a | 9830 | enum elf_ppc64_reloc_type r_type; |
4cc603a5 | 9831 | bfd_vma addend, orig_addend; |
5bd4f169 AM |
9832 | bfd_reloc_status_type r; |
9833 | Elf_Internal_Sym *sym; | |
9834 | asection *sec; | |
039b3fef AM |
9835 | struct elf_link_hash_entry *h_elf; |
9836 | struct ppc_link_hash_entry *h; | |
9837 | struct ppc_link_hash_entry *fdh; | |
5bd4f169 | 9838 | const char *sym_name; |
0d4792f7 | 9839 | unsigned long r_symndx, toc_symndx; |
951fd09b | 9840 | char tls_mask, tls_gd, tls_type; |
0d4792f7 | 9841 | char sym_type; |
5bd4f169 | 9842 | bfd_vma relocation; |
b34976b6 AM |
9843 | bfd_boolean unresolved_reloc; |
9844 | bfd_boolean warned; | |
50bc7936 | 9845 | unsigned long insn, mask; |
721956f4 AM |
9846 | struct ppc_stub_hash_entry *stub_entry; |
9847 | bfd_vma max_br_offset; | |
9848 | bfd_vma from; | |
5bd4f169 | 9849 | |
4ce794b7 | 9850 | r_type = ELF64_R_TYPE (rel->r_info); |
5bd4f169 | 9851 | r_symndx = ELF64_R_SYM (rel->r_info); |
ee87f2da AM |
9852 | |
9853 | /* For old style R_PPC64_TOC relocs with a zero symbol, use the | |
9854 | symbol of the previous ADDR64 reloc. The symbol gives us the | |
9855 | proper TOC base to use. */ | |
9856 | if (rel->r_info == ELF64_R_INFO (0, R_PPC64_TOC) | |
9857 | && rel != relocs | |
9858 | && ELF64_R_TYPE (rel[-1].r_info) == R_PPC64_ADDR64 | |
9859 | && is_opd) | |
9860 | r_symndx = ELF64_R_SYM (rel[-1].r_info); | |
9861 | ||
4ce794b7 AM |
9862 | sym = NULL; |
9863 | sec = NULL; | |
039b3fef | 9864 | h_elf = NULL; |
4ce794b7 | 9865 | sym_name = NULL; |
b34976b6 AM |
9866 | unresolved_reloc = FALSE; |
9867 | warned = FALSE; | |
4cc603a5 | 9868 | orig_addend = rel->r_addend; |
65f38f15 | 9869 | |
0b13192e | 9870 | if (r_symndx < symtab_hdr->sh_info) |
5bd4f169 AM |
9871 | { |
9872 | /* It's a local symbol. */ | |
4025353c AM |
9873 | long *opd_adjust; |
9874 | ||
5bd4f169 AM |
9875 | sym = local_syms + r_symndx; |
9876 | sec = local_sections[r_symndx]; | |
26c61ae5 | 9877 | sym_name = bfd_elf_sym_name (input_bfd, symtab_hdr, sym, sec); |
0d4792f7 | 9878 | sym_type = ELF64_ST_TYPE (sym->st_info); |
8517fae7 | 9879 | relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel); |
4025353c AM |
9880 | opd_adjust = get_opd_info (sec); |
9881 | if (opd_adjust != NULL) | |
1e2f5b6e | 9882 | { |
3f764659 | 9883 | long adjust = opd_adjust[(sym->st_value + rel->r_addend) / 8]; |
4025353c AM |
9884 | if (adjust == -1) |
9885 | relocation = 0; | |
9886 | else | |
4cc603a5 AM |
9887 | { |
9888 | /* If this is a relocation against the opd section sym | |
9889 | and we have edited .opd, adjust the reloc addend so | |
9890 | that ld -r and ld --emit-relocs output is correct. | |
9891 | If it is a reloc against some other .opd symbol, | |
9892 | then the symbol value will be adjusted later. */ | |
9893 | if (ELF_ST_TYPE (sym->st_info) == STT_SECTION) | |
9894 | rel->r_addend += adjust; | |
9895 | else | |
9896 | relocation += adjust; | |
9897 | } | |
1e2f5b6e | 9898 | } |
4cc603a5 AM |
9899 | if (info->relocatable) |
9900 | continue; | |
5bd4f169 AM |
9901 | } |
9902 | else | |
9903 | { | |
4cc603a5 AM |
9904 | if (info->relocatable) |
9905 | continue; | |
b2a8e766 AM |
9906 | RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel, |
9907 | r_symndx, symtab_hdr, sym_hashes, | |
039b3fef | 9908 | h_elf, sec, relocation, |
b2a8e766 | 9909 | unresolved_reloc, warned); |
039b3fef AM |
9910 | sym_name = h_elf->root.root.string; |
9911 | sym_type = h_elf->type; | |
5bd4f169 | 9912 | } |
039b3fef | 9913 | h = (struct ppc_link_hash_entry *) h_elf; |
5bd4f169 | 9914 | |
951fd09b AM |
9915 | /* TLS optimizations. Replace instruction sequences and relocs |
9916 | based on information we collected in tls_optimize. We edit | |
9917 | RELOCS so that --emit-relocs will output something sensible | |
9918 | for the final instruction stream. */ | |
9919 | tls_mask = 0; | |
9920 | tls_gd = 0; | |
0d4792f7 | 9921 | toc_symndx = 0; |
d881513a | 9922 | if (IS_PPC64_TLS_RELOC (r_type)) |
411e1bfb AM |
9923 | { |
9924 | if (h != NULL) | |
039b3fef | 9925 | tls_mask = h->tls_mask; |
411e1bfb AM |
9926 | else if (local_got_ents != NULL) |
9927 | { | |
e7b938ca AM |
9928 | char *lgot_masks; |
9929 | lgot_masks = (char *) (local_got_ents + symtab_hdr->sh_info); | |
9930 | tls_mask = lgot_masks[r_symndx]; | |
411e1bfb | 9931 | } |
0d4792f7 AM |
9932 | if (tls_mask == 0 && r_type == R_PPC64_TLS) |
9933 | { | |
9934 | /* Check for toc tls entries. */ | |
9935 | char *toc_tls; | |
9936 | ||
9937 | if (!get_tls_mask (&toc_tls, &toc_symndx, &local_syms, | |
9938 | rel, input_bfd)) | |
9939 | return FALSE; | |
9940 | ||
9941 | if (toc_tls) | |
9942 | tls_mask = *toc_tls; | |
9943 | } | |
9944 | } | |
9945 | ||
9946 | /* Check that tls relocs are used with tls syms, and non-tls | |
9947 | relocs are used with non-tls syms. */ | |
9948 | if (r_symndx != 0 | |
9949 | && r_type != R_PPC64_NONE | |
9950 | && (h == NULL | |
039b3fef AM |
9951 | || h->elf.root.type == bfd_link_hash_defined |
9952 | || h->elf.root.type == bfd_link_hash_defweak) | |
0d4792f7 AM |
9953 | && IS_PPC64_TLS_RELOC (r_type) != (sym_type == STT_TLS)) |
9954 | { | |
9955 | if (r_type == R_PPC64_TLS && tls_mask != 0) | |
9956 | /* R_PPC64_TLS is OK against a symbol in the TOC. */ | |
9957 | ; | |
9958 | else | |
9959 | (*_bfd_error_handler) | |
9960 | (sym_type == STT_TLS | |
d003868e AM |
9961 | ? _("%B(%A+0x%lx): %s used with TLS symbol %s") |
9962 | : _("%B(%A+0x%lx): %s used with non-TLS symbol %s"), | |
9963 | input_bfd, | |
9964 | input_section, | |
0d4792f7 AM |
9965 | (long) rel->r_offset, |
9966 | ppc64_elf_howto_table[r_type]->name, | |
9967 | sym_name); | |
411e1bfb AM |
9968 | } |
9969 | ||
9970 | /* Ensure reloc mapping code below stays sane. */ | |
9971 | if (R_PPC64_TOC16_LO_DS != R_PPC64_TOC16_DS + 1 | |
9972 | || R_PPC64_TOC16_LO != R_PPC64_TOC16 + 1 | |
9973 | || (R_PPC64_GOT_TLSLD16 & 3) != (R_PPC64_GOT_TLSGD16 & 3) | |
9974 | || (R_PPC64_GOT_TLSLD16_LO & 3) != (R_PPC64_GOT_TLSGD16_LO & 3) | |
9975 | || (R_PPC64_GOT_TLSLD16_HI & 3) != (R_PPC64_GOT_TLSGD16_HI & 3) | |
9976 | || (R_PPC64_GOT_TLSLD16_HA & 3) != (R_PPC64_GOT_TLSGD16_HA & 3) | |
9977 | || (R_PPC64_GOT_TLSLD16 & 3) != (R_PPC64_GOT_TPREL16_DS & 3) | |
9978 | || (R_PPC64_GOT_TLSLD16_LO & 3) != (R_PPC64_GOT_TPREL16_LO_DS & 3) | |
9979 | || (R_PPC64_GOT_TLSLD16_HI & 3) != (R_PPC64_GOT_TPREL16_HI & 3) | |
9980 | || (R_PPC64_GOT_TLSLD16_HA & 3) != (R_PPC64_GOT_TPREL16_HA & 3)) | |
9981 | abort (); | |
0d4792f7 | 9982 | |
411e1bfb AM |
9983 | switch (r_type) |
9984 | { | |
9985 | default: | |
411e1bfb AM |
9986 | break; |
9987 | ||
9988 | case R_PPC64_TOC16: | |
9989 | case R_PPC64_TOC16_LO: | |
9990 | case R_PPC64_TOC16_DS: | |
9991 | case R_PPC64_TOC16_LO_DS: | |
411e1bfb AM |
9992 | { |
9993 | /* Check for toc tls entries. */ | |
9994 | char *toc_tls; | |
951fd09b | 9995 | int retval; |
411e1bfb | 9996 | |
0d4792f7 AM |
9997 | retval = get_tls_mask (&toc_tls, &toc_symndx, &local_syms, |
9998 | rel, input_bfd); | |
951fd09b | 9999 | if (retval == 0) |
411e1bfb AM |
10000 | return FALSE; |
10001 | ||
10002 | if (toc_tls) | |
10003 | { | |
951fd09b | 10004 | tls_mask = *toc_tls; |
411e1bfb AM |
10005 | if (r_type == R_PPC64_TOC16_DS |
10006 | || r_type == R_PPC64_TOC16_LO_DS) | |
81407a69 AM |
10007 | { |
10008 | if (tls_mask != 0 | |
10009 | && (tls_mask & (TLS_DTPREL | TLS_TPREL)) == 0) | |
10010 | goto toctprel; | |
10011 | } | |
411e1bfb | 10012 | else |
951fd09b AM |
10013 | { |
10014 | /* If we found a GD reloc pair, then we might be | |
10015 | doing a GD->IE transition. */ | |
10016 | if (retval == 2) | |
10017 | { | |
10018 | tls_gd = TLS_TPRELGD; | |
10019 | if (tls_mask != 0 && (tls_mask & TLS_GD) == 0) | |
10020 | goto tls_get_addr_check; | |
10021 | } | |
10022 | else if (retval == 3) | |
10023 | { | |
10024 | if (tls_mask != 0 && (tls_mask & TLS_LD) == 0) | |
10025 | goto tls_get_addr_check; | |
10026 | } | |
10027 | } | |
411e1bfb AM |
10028 | } |
10029 | } | |
10030 | break; | |
10031 | ||
10032 | case R_PPC64_GOT_TPREL16_DS: | |
10033 | case R_PPC64_GOT_TPREL16_LO_DS: | |
951fd09b AM |
10034 | if (tls_mask != 0 |
10035 | && (tls_mask & TLS_TPREL) == 0) | |
411e1bfb | 10036 | { |
81407a69 | 10037 | toctprel: |
4fe5ca5b | 10038 | insn = bfd_get_32 (output_bfd, contents + rel->r_offset - d_offset); |
411e1bfb AM |
10039 | insn &= 31 << 21; |
10040 | insn |= 0x3c0d0000; /* addis 0,13,0 */ | |
4fe5ca5b | 10041 | bfd_put_32 (output_bfd, insn, contents + rel->r_offset - d_offset); |
411e1bfb | 10042 | r_type = R_PPC64_TPREL16_HA; |
0d4792f7 AM |
10043 | if (toc_symndx != 0) |
10044 | { | |
10045 | rel->r_info = ELF64_R_INFO (toc_symndx, r_type); | |
10046 | /* We changed the symbol. Start over in order to | |
10047 | get h, sym, sec etc. right. */ | |
10048 | rel--; | |
10049 | continue; | |
10050 | } | |
10051 | else | |
10052 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
411e1bfb AM |
10053 | } |
10054 | break; | |
10055 | ||
10056 | case R_PPC64_TLS: | |
951fd09b AM |
10057 | if (tls_mask != 0 |
10058 | && (tls_mask & TLS_TPREL) == 0) | |
411e1bfb | 10059 | { |
50bc7936 | 10060 | bfd_vma rtra; |
411e1bfb | 10061 | insn = bfd_get_32 (output_bfd, contents + rel->r_offset); |
772119ce | 10062 | if ((insn & ((0x3f << 26) | (31 << 11))) |
411e1bfb AM |
10063 | == ((31 << 26) | (13 << 11))) |
10064 | rtra = insn & ((1 << 26) - (1 << 16)); | |
772119ce | 10065 | else if ((insn & ((0x3f << 26) | (31 << 16))) |
411e1bfb AM |
10066 | == ((31 << 26) | (13 << 16))) |
10067 | rtra = (insn & (31 << 21)) | ((insn & (31 << 11)) << 5); | |
10068 | else | |
10069 | abort (); | |
10070 | if ((insn & ((1 << 11) - (1 << 1))) == 266 << 1) | |
10071 | /* add -> addi. */ | |
10072 | insn = 14 << 26; | |
10073 | else if ((insn & (31 << 1)) == 23 << 1 | |
10074 | && ((insn & (31 << 6)) < 14 << 6 | |
10075 | || ((insn & (31 << 6)) >= 16 << 6 | |
10076 | && (insn & (31 << 6)) < 24 << 6))) | |
10077 | /* load and store indexed -> dform. */ | |
10078 | insn = (32 | ((insn >> 6) & 31)) << 26; | |
10079 | else if ((insn & (31 << 1)) == 21 << 1 | |
10080 | && (insn & (0x1a << 6)) == 0) | |
10081 | /* ldx, ldux, stdx, stdux -> ld, ldu, std, stdu. */ | |
10082 | insn = (((58 | ((insn >> 6) & 4)) << 26) | |
10083 | | ((insn >> 6) & 1)); | |
10084 | else if ((insn & (31 << 1)) == 21 << 1 | |
10085 | && (insn & ((1 << 11) - (1 << 1))) == 341 << 1) | |
10086 | /* lwax -> lwa. */ | |
10087 | insn = (58 << 26) | 2; | |
10088 | else | |
10089 | abort (); | |
10090 | insn |= rtra; | |
10091 | bfd_put_32 (output_bfd, insn, contents + rel->r_offset); | |
411e1bfb | 10092 | /* Was PPC64_TLS which sits on insn boundary, now |
4fe5ca5b GM |
10093 | PPC64_TPREL16_LO which is at low-order half-word. */ |
10094 | rel->r_offset += d_offset; | |
0d4792f7 AM |
10095 | r_type = R_PPC64_TPREL16_LO; |
10096 | if (toc_symndx != 0) | |
10097 | { | |
10098 | rel->r_info = ELF64_R_INFO (toc_symndx, r_type); | |
10099 | /* We changed the symbol. Start over in order to | |
10100 | get h, sym, sec etc. right. */ | |
10101 | rel--; | |
10102 | continue; | |
10103 | } | |
10104 | else | |
10105 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
411e1bfb AM |
10106 | } |
10107 | break; | |
10108 | ||
411e1bfb AM |
10109 | case R_PPC64_GOT_TLSGD16_HI: |
10110 | case R_PPC64_GOT_TLSGD16_HA: | |
951fd09b AM |
10111 | tls_gd = TLS_TPRELGD; |
10112 | if (tls_mask != 0 && (tls_mask & TLS_GD) == 0) | |
10113 | goto tls_gdld_hi; | |
10114 | break; | |
10115 | ||
411e1bfb AM |
10116 | case R_PPC64_GOT_TLSLD16_HI: |
10117 | case R_PPC64_GOT_TLSLD16_HA: | |
951fd09b | 10118 | if (tls_mask != 0 && (tls_mask & TLS_LD) == 0) |
411e1bfb | 10119 | { |
951fd09b AM |
10120 | tls_gdld_hi: |
10121 | if ((tls_mask & tls_gd) != 0) | |
10122 | r_type = (((r_type - (R_PPC64_GOT_TLSGD16 & 3)) & 3) | |
10123 | + R_PPC64_GOT_TPREL16_DS); | |
10124 | else | |
411e1bfb | 10125 | { |
951fd09b | 10126 | bfd_put_32 (output_bfd, NOP, contents + rel->r_offset); |
4fe5ca5b | 10127 | rel->r_offset -= d_offset; |
951fd09b | 10128 | r_type = R_PPC64_NONE; |
411e1bfb | 10129 | } |
951fd09b | 10130 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); |
411e1bfb AM |
10131 | } |
10132 | break; | |
10133 | ||
951fd09b AM |
10134 | case R_PPC64_GOT_TLSGD16: |
10135 | case R_PPC64_GOT_TLSGD16_LO: | |
10136 | tls_gd = TLS_TPRELGD; | |
10137 | if (tls_mask != 0 && (tls_mask & TLS_GD) == 0) | |
10138 | goto tls_get_addr_check; | |
10139 | break; | |
411e1bfb | 10140 | |
951fd09b AM |
10141 | case R_PPC64_GOT_TLSLD16: |
10142 | case R_PPC64_GOT_TLSLD16_LO: | |
10143 | if (tls_mask != 0 && (tls_mask & TLS_LD) == 0) | |
10144 | { | |
10145 | tls_get_addr_check: | |
10146 | if (rel + 1 < relend) | |
411e1bfb | 10147 | { |
951fd09b AM |
10148 | enum elf_ppc64_reloc_type r_type2; |
10149 | unsigned long r_symndx2; | |
10150 | struct elf_link_hash_entry *h2; | |
10151 | bfd_vma insn1, insn2, insn3; | |
10152 | bfd_vma offset; | |
10153 | ||
10154 | /* The next instruction should be a call to | |
10155 | __tls_get_addr. Peek at the reloc to be sure. */ | |
4ce794b7 | 10156 | r_type2 = ELF64_R_TYPE (rel[1].r_info); |
951fd09b AM |
10157 | r_symndx2 = ELF64_R_SYM (rel[1].r_info); |
10158 | if (r_symndx2 < symtab_hdr->sh_info | |
10159 | || (r_type2 != R_PPC64_REL14 | |
10160 | && r_type2 != R_PPC64_REL14_BRTAKEN | |
10161 | && r_type2 != R_PPC64_REL14_BRNTAKEN | |
10162 | && r_type2 != R_PPC64_REL24)) | |
10163 | break; | |
10164 | ||
10165 | h2 = sym_hashes[r_symndx2 - symtab_hdr->sh_info]; | |
10166 | while (h2->root.type == bfd_link_hash_indirect | |
10167 | || h2->root.type == bfd_link_hash_warning) | |
10168 | h2 = (struct elf_link_hash_entry *) h2->root.u.i.link; | |
8387904d AM |
10169 | if (h2 == NULL || (h2 != &htab->tls_get_addr->elf |
10170 | && h2 != &htab->tls_get_addr_fd->elf)) | |
951fd09b AM |
10171 | break; |
10172 | ||
10173 | /* OK, it checks out. Replace the call. */ | |
10174 | offset = rel[1].r_offset; | |
10175 | insn1 = bfd_get_32 (output_bfd, | |
4fe5ca5b | 10176 | contents + rel->r_offset - d_offset); |
951fd09b AM |
10177 | insn3 = bfd_get_32 (output_bfd, |
10178 | contents + offset + 4); | |
10179 | if ((tls_mask & tls_gd) != 0) | |
411e1bfb | 10180 | { |
951fd09b AM |
10181 | /* IE */ |
10182 | insn1 &= (1 << 26) - (1 << 2); | |
10183 | insn1 |= 58 << 26; /* ld */ | |
10184 | insn2 = 0x7c636a14; /* add 3,3,13 */ | |
10185 | rel[1].r_info = ELF64_R_INFO (r_symndx2, R_PPC64_NONE); | |
10186 | if ((tls_mask & TLS_EXPLICIT) == 0) | |
10187 | r_type = (((r_type - (R_PPC64_GOT_TLSGD16 & 3)) & 3) | |
10188 | + R_PPC64_GOT_TPREL16_DS); | |
10189 | else | |
10190 | r_type += R_PPC64_TOC16_DS - R_PPC64_TOC16; | |
10191 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
411e1bfb AM |
10192 | } |
10193 | else | |
951fd09b AM |
10194 | { |
10195 | /* LE */ | |
10196 | insn1 = 0x3c6d0000; /* addis 3,13,0 */ | |
10197 | insn2 = 0x38630000; /* addi 3,3,0 */ | |
10198 | if (tls_gd == 0) | |
10199 | { | |
10200 | /* Was an LD reloc. */ | |
10201 | r_symndx = 0; | |
e1918d23 AM |
10202 | rel->r_addend = htab->elf.tls_sec->vma + DTP_OFFSET; |
10203 | rel[1].r_addend = htab->elf.tls_sec->vma + DTP_OFFSET; | |
951fd09b | 10204 | } |
0d4792f7 AM |
10205 | else if (toc_symndx != 0) |
10206 | r_symndx = toc_symndx; | |
951fd09b AM |
10207 | r_type = R_PPC64_TPREL16_HA; |
10208 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
10209 | rel[1].r_info = ELF64_R_INFO (r_symndx, | |
10210 | R_PPC64_TPREL16_LO); | |
4fe5ca5b | 10211 | rel[1].r_offset += d_offset; |
951fd09b AM |
10212 | } |
10213 | if (insn3 == NOP | |
10214 | || insn3 == CROR_151515 || insn3 == CROR_313131) | |
10215 | { | |
10216 | insn3 = insn2; | |
10217 | insn2 = NOP; | |
10218 | rel[1].r_offset += 4; | |
10219 | } | |
4fe5ca5b | 10220 | bfd_put_32 (output_bfd, insn1, contents + rel->r_offset - d_offset); |
951fd09b AM |
10221 | bfd_put_32 (output_bfd, insn2, contents + offset); |
10222 | bfd_put_32 (output_bfd, insn3, contents + offset + 4); | |
0d4792f7 | 10223 | if (tls_gd == 0 || toc_symndx != 0) |
951fd09b | 10224 | { |
0d4792f7 AM |
10225 | /* We changed the symbol. Start over in order |
10226 | to get h, sym, sec etc. right. */ | |
951fd09b AM |
10227 | rel--; |
10228 | continue; | |
10229 | } | |
411e1bfb | 10230 | } |
411e1bfb | 10231 | } |
411e1bfb AM |
10232 | break; |
10233 | ||
10234 | case R_PPC64_DTPMOD64: | |
951fd09b AM |
10235 | if (rel + 1 < relend |
10236 | && rel[1].r_info == ELF64_R_INFO (r_symndx, R_PPC64_DTPREL64) | |
10237 | && rel[1].r_offset == rel->r_offset + 8) | |
411e1bfb | 10238 | { |
951fd09b AM |
10239 | if ((tls_mask & TLS_GD) == 0) |
10240 | { | |
10241 | rel[1].r_info = ELF64_R_INFO (r_symndx, R_PPC64_NONE); | |
10242 | if ((tls_mask & TLS_TPRELGD) != 0) | |
10243 | r_type = R_PPC64_TPREL64; | |
10244 | else | |
10245 | { | |
4ce794b7 | 10246 | bfd_put_64 (output_bfd, 1, contents + rel->r_offset); |
951fd09b AM |
10247 | r_type = R_PPC64_NONE; |
10248 | } | |
10249 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
10250 | } | |
10251 | } | |
10252 | else | |
10253 | { | |
10254 | if ((tls_mask & TLS_LD) == 0) | |
411e1bfb | 10255 | { |
4ce794b7 | 10256 | bfd_put_64 (output_bfd, 1, contents + rel->r_offset); |
411e1bfb | 10257 | r_type = R_PPC64_NONE; |
951fd09b | 10258 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); |
411e1bfb | 10259 | } |
411e1bfb AM |
10260 | } |
10261 | break; | |
10262 | ||
10263 | case R_PPC64_TPREL64: | |
951fd09b | 10264 | if ((tls_mask & TLS_TPREL) == 0) |
411e1bfb AM |
10265 | { |
10266 | r_type = R_PPC64_NONE; | |
10267 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
10268 | } | |
10269 | break; | |
10270 | } | |
10271 | ||
10272 | /* Handle other relocations that tweak non-addend part of insn. */ | |
86c76c7b | 10273 | insn = 0; |
b25116a9 AM |
10274 | max_br_offset = 1 << 25; |
10275 | addend = rel->r_addend; | |
65f38f15 | 10276 | switch (r_type) |
5bd4f169 AM |
10277 | { |
10278 | default: | |
65f38f15 | 10279 | break; |
5bd4f169 | 10280 | |
65f38f15 AM |
10281 | /* Branch taken prediction relocations. */ |
10282 | case R_PPC64_ADDR14_BRTAKEN: | |
10283 | case R_PPC64_REL14_BRTAKEN: | |
cedb70c5 KH |
10284 | insn = 0x01 << 21; /* 'y' or 't' bit, lowest bit of BO field. */ |
10285 | /* Fall thru. */ | |
65f38f15 | 10286 | |
86c76c7b | 10287 | /* Branch not taken prediction relocations. */ |
65f38f15 AM |
10288 | case R_PPC64_ADDR14_BRNTAKEN: |
10289 | case R_PPC64_REL14_BRNTAKEN: | |
411e1bfb AM |
10290 | insn |= bfd_get_32 (output_bfd, |
10291 | contents + rel->r_offset) & ~(0x01 << 21); | |
b25116a9 | 10292 | /* Fall thru. */ |
86c76c7b | 10293 | |
b25116a9 AM |
10294 | case R_PPC64_REL14: |
10295 | max_br_offset = 1 << 15; | |
10296 | /* Fall thru. */ | |
5bd4f169 | 10297 | |
65f38f15 | 10298 | case R_PPC64_REL24: |
ad8e1ba5 AM |
10299 | /* Calls to functions with a different TOC, such as calls to |
10300 | shared objects, need to alter the TOC pointer. This is | |
10301 | done using a linkage stub. A REL24 branching to these | |
10302 | linkage stubs needs to be followed by a nop, as the nop | |
10303 | will be replaced with an instruction to restore the TOC | |
10304 | base pointer. */ | |
b25116a9 | 10305 | stub_entry = NULL; |
8387904d | 10306 | fdh = h; |
ad8e1ba5 | 10307 | if (((h != NULL |
039b3fef AM |
10308 | && (((fdh = h->oh) != NULL |
10309 | && fdh->elf.plt.plist != NULL) | |
10310 | || (fdh = h)->elf.plt.plist != NULL)) | |
8387904d | 10311 | || (sec != NULL |
ad8e1ba5 | 10312 | && sec->output_section != NULL |
b25116a9 | 10313 | && sec->id <= htab->top_id |
ad8e1ba5 AM |
10314 | && (htab->stub_group[sec->id].toc_off |
10315 | != htab->stub_group[input_section->id].toc_off))) | |
721956f4 | 10316 | && (stub_entry = ppc_get_stub_entry (input_section, sec, fdh, |
ad8e1ba5 AM |
10317 | rel, htab)) != NULL |
10318 | && (stub_entry->stub_type == ppc_stub_plt_call | |
10319 | || stub_entry->stub_type == ppc_stub_plt_branch_r2off | |
10320 | || stub_entry->stub_type == ppc_stub_long_branch_r2off)) | |
41bd81ab | 10321 | { |
b25116a9 | 10322 | bfd_boolean can_plt_call = FALSE; |
721956f4 | 10323 | |
eea6121a | 10324 | if (rel->r_offset + 8 <= input_section->size) |
41bd81ab | 10325 | { |
b25116a9 AM |
10326 | unsigned long nop; |
10327 | nop = bfd_get_32 (input_bfd, contents + rel->r_offset + 4); | |
10328 | if (nop == NOP | |
10329 | || nop == CROR_151515 || nop == CROR_313131) | |
41bd81ab | 10330 | { |
4ce794b7 | 10331 | bfd_put_32 (input_bfd, LD_R2_40R1, |
411e1bfb | 10332 | contents + rel->r_offset + 4); |
b25116a9 | 10333 | can_plt_call = TRUE; |
41bd81ab | 10334 | } |
5bd4f169 | 10335 | } |
721956f4 AM |
10336 | |
10337 | if (!can_plt_call) | |
10338 | { | |
ad8e1ba5 AM |
10339 | if (stub_entry->stub_type == ppc_stub_plt_call) |
10340 | { | |
10341 | /* If this is a plain branch rather than a branch | |
4fa1c237 AM |
10342 | and link, don't require a nop. However, don't |
10343 | allow tail calls in a shared library as they | |
10344 | will result in r2 being corrupted. */ | |
b25116a9 AM |
10345 | unsigned long br; |
10346 | br = bfd_get_32 (input_bfd, contents + rel->r_offset); | |
4fa1c237 | 10347 | if (info->executable && (br & 1) == 0) |
b25116a9 | 10348 | can_plt_call = TRUE; |
15b552e9 AM |
10349 | else |
10350 | stub_entry = NULL; | |
ad8e1ba5 | 10351 | } |
6ab189d5 | 10352 | else if (h != NULL |
039b3fef | 10353 | && strcmp (h->elf.root.root.string, |
6ab189d5 AM |
10354 | ".__libc_start_main") == 0) |
10355 | { | |
10356 | /* Allow crt1 branch to go via a toc adjusting stub. */ | |
b25116a9 | 10357 | can_plt_call = TRUE; |
6ab189d5 | 10358 | } |
ad8e1ba5 AM |
10359 | else |
10360 | { | |
10361 | if (strcmp (input_section->output_section->name, | |
10362 | ".init") == 0 | |
10363 | || strcmp (input_section->output_section->name, | |
10364 | ".fini") == 0) | |
10365 | (*_bfd_error_handler) | |
d003868e | 10366 | (_("%B(%A+0x%lx): automatic multiple TOCs " |
ad8e1ba5 AM |
10367 | "not supported using your crt files; " |
10368 | "recompile with -mminimal-toc or upgrade gcc"), | |
d003868e AM |
10369 | input_bfd, |
10370 | input_section, | |
ad8e1ba5 AM |
10371 | (long) rel->r_offset); |
10372 | else | |
10373 | (*_bfd_error_handler) | |
d003868e | 10374 | (_("%B(%A+0x%lx): sibling call optimization to `%s' " |
ad8e1ba5 AM |
10375 | "does not allow automatic multiple TOCs; " |
10376 | "recompile with -mminimal-toc or " | |
10377 | "-fno-optimize-sibling-calls, " | |
10378 | "or make `%s' extern"), | |
d003868e AM |
10379 | input_bfd, |
10380 | input_section, | |
ad8e1ba5 AM |
10381 | (long) rel->r_offset, |
10382 | sym_name, | |
10383 | sym_name); | |
10384 | bfd_set_error (bfd_error_bad_value); | |
10385 | ret = FALSE; | |
10386 | } | |
721956f4 AM |
10387 | } |
10388 | ||
b25116a9 AM |
10389 | if (can_plt_call |
10390 | && stub_entry->stub_type == ppc_stub_plt_call) | |
10391 | unresolved_reloc = FALSE; | |
10392 | } | |
10393 | ||
8387904d AM |
10394 | if (stub_entry == NULL |
10395 | && get_opd_info (sec) != NULL) | |
10396 | { | |
10397 | /* The branch destination is the value of the opd entry. */ | |
4cc603a5 AM |
10398 | bfd_vma off = (relocation + addend |
10399 | - sec->output_section->vma | |
10400 | - sec->output_offset); | |
8387904d AM |
10401 | bfd_vma dest = opd_entry_value (sec, off, NULL, NULL); |
10402 | if (dest != (bfd_vma) -1) | |
10403 | { | |
10404 | relocation = dest; | |
10405 | addend = 0; | |
10406 | } | |
10407 | } | |
10408 | ||
b25116a9 AM |
10409 | /* If the branch is out of reach we ought to have a long |
10410 | branch stub. */ | |
10411 | from = (rel->r_offset | |
10412 | + input_section->output_offset | |
10413 | + input_section->output_section->vma); | |
10414 | ||
10415 | if (stub_entry == NULL | |
4cc603a5 | 10416 | && (relocation + addend - from + max_br_offset |
b25116a9 AM |
10417 | >= 2 * max_br_offset) |
10418 | && r_type != R_PPC64_ADDR14_BRTAKEN | |
10419 | && r_type != R_PPC64_ADDR14_BRNTAKEN) | |
039b3fef AM |
10420 | stub_entry = ppc_get_stub_entry (input_section, sec, h, rel, |
10421 | htab); | |
b25116a9 AM |
10422 | |
10423 | if (stub_entry != NULL) | |
10424 | { | |
10425 | /* Munge up the value and addend so that we call the stub | |
10426 | rather than the procedure directly. */ | |
10427 | relocation = (stub_entry->stub_offset | |
10428 | + stub_entry->stub_sec->output_offset | |
10429 | + stub_entry->stub_sec->output_section->vma); | |
10430 | addend = 0; | |
10431 | } | |
10432 | ||
10433 | if (insn != 0) | |
10434 | { | |
10435 | if (is_power4) | |
721956f4 | 10436 | { |
b25116a9 AM |
10437 | /* Set 'a' bit. This is 0b00010 in BO field for branch |
10438 | on CR(BI) insns (BO == 001at or 011at), and 0b01000 | |
10439 | for branch on CTR insns (BO == 1a00t or 1a01t). */ | |
10440 | if ((insn & (0x14 << 21)) == (0x04 << 21)) | |
10441 | insn |= 0x02 << 21; | |
10442 | else if ((insn & (0x14 << 21)) == (0x10 << 21)) | |
10443 | insn |= 0x08 << 21; | |
10444 | else | |
10445 | break; | |
10446 | } | |
10447 | else | |
10448 | { | |
10449 | /* Invert 'y' bit if not the default. */ | |
4cc603a5 | 10450 | if ((bfd_signed_vma) (relocation + addend - from) < 0) |
b25116a9 | 10451 | insn ^= 0x01 << 21; |
721956f4 | 10452 | } |
b25116a9 AM |
10453 | |
10454 | bfd_put_32 (output_bfd, insn, contents + rel->r_offset); | |
5bd4f169 | 10455 | } |
e86ce104 | 10456 | |
06da1e8e AM |
10457 | /* NOP out calls to undefined weak functions. |
10458 | We can thus call a weak function without first | |
10459 | checking whether the function is defined. */ | |
b25116a9 | 10460 | else if (h != NULL |
039b3fef | 10461 | && h->elf.root.type == bfd_link_hash_undefweak |
b25116a9 AM |
10462 | && r_type == R_PPC64_REL24 |
10463 | && relocation == 0 | |
4cc603a5 | 10464 | && addend == 0) |
e86ce104 | 10465 | { |
06da1e8e AM |
10466 | bfd_put_32 (output_bfd, NOP, contents + rel->r_offset); |
10467 | continue; | |
e86ce104 | 10468 | } |
65f38f15 AM |
10469 | break; |
10470 | } | |
5bd4f169 | 10471 | |
65f38f15 | 10472 | /* Set `addend'. */ |
411e1bfb | 10473 | tls_type = 0; |
65f38f15 AM |
10474 | switch (r_type) |
10475 | { | |
10476 | default: | |
10477 | (*_bfd_error_handler) | |
d003868e AM |
10478 | (_("%B: unknown relocation type %d for symbol %s"), |
10479 | input_bfd, (int) r_type, sym_name); | |
5bd4f169 | 10480 | |
65f38f15 | 10481 | bfd_set_error (bfd_error_bad_value); |
b34976b6 | 10482 | ret = FALSE; |
65f38f15 | 10483 | continue; |
5bd4f169 | 10484 | |
65f38f15 | 10485 | case R_PPC64_NONE: |
411e1bfb | 10486 | case R_PPC64_TLS: |
04c9666a AM |
10487 | case R_PPC64_GNU_VTINHERIT: |
10488 | case R_PPC64_GNU_VTENTRY: | |
65f38f15 | 10489 | continue; |
5bd4f169 AM |
10490 | |
10491 | /* GOT16 relocations. Like an ADDR16 using the symbol's | |
10492 | address in the GOT as relocation value instead of the | |
411e1bfb | 10493 | symbol's value itself. Also, create a GOT entry for the |
5bd4f169 | 10494 | symbol and put the symbol value there. */ |
411e1bfb AM |
10495 | case R_PPC64_GOT_TLSGD16: |
10496 | case R_PPC64_GOT_TLSGD16_LO: | |
10497 | case R_PPC64_GOT_TLSGD16_HI: | |
10498 | case R_PPC64_GOT_TLSGD16_HA: | |
951fd09b | 10499 | tls_type = TLS_TLS | TLS_GD; |
411e1bfb AM |
10500 | goto dogot; |
10501 | ||
10502 | case R_PPC64_GOT_TLSLD16: | |
10503 | case R_PPC64_GOT_TLSLD16_LO: | |
10504 | case R_PPC64_GOT_TLSLD16_HI: | |
10505 | case R_PPC64_GOT_TLSLD16_HA: | |
951fd09b | 10506 | tls_type = TLS_TLS | TLS_LD; |
411e1bfb AM |
10507 | goto dogot; |
10508 | ||
10509 | case R_PPC64_GOT_TPREL16_DS: | |
10510 | case R_PPC64_GOT_TPREL16_LO_DS: | |
10511 | case R_PPC64_GOT_TPREL16_HI: | |
10512 | case R_PPC64_GOT_TPREL16_HA: | |
10513 | tls_type = TLS_TLS | TLS_TPREL; | |
10514 | goto dogot; | |
10515 | ||
10516 | case R_PPC64_GOT_DTPREL16_DS: | |
10517 | case R_PPC64_GOT_DTPREL16_LO_DS: | |
10518 | case R_PPC64_GOT_DTPREL16_HI: | |
10519 | case R_PPC64_GOT_DTPREL16_HA: | |
10520 | tls_type = TLS_TLS | TLS_DTPREL; | |
10521 | goto dogot; | |
10522 | ||
65f38f15 AM |
10523 | case R_PPC64_GOT16: |
10524 | case R_PPC64_GOT16_LO: | |
10525 | case R_PPC64_GOT16_HI: | |
10526 | case R_PPC64_GOT16_HA: | |
10527 | case R_PPC64_GOT16_DS: | |
10528 | case R_PPC64_GOT16_LO_DS: | |
411e1bfb | 10529 | dogot: |
5bd4f169 AM |
10530 | { |
10531 | /* Relocation is to the entry for this symbol in the global | |
10532 | offset table. */ | |
e717da7e | 10533 | asection *got; |
d881513a | 10534 | bfd_vma *offp; |
5bd4f169 | 10535 | bfd_vma off; |
d881513a | 10536 | unsigned long indx = 0; |
65f38f15 | 10537 | |
d881513a AM |
10538 | if (tls_type == (TLS_TLS | TLS_LD) |
10539 | && (h == NULL | |
f5385ebf | 10540 | || !h->elf.def_dynamic)) |
e717da7e | 10541 | offp = &ppc64_tlsld_got (input_bfd)->offset; |
411e1bfb | 10542 | else |
5bd4f169 | 10543 | { |
d881513a | 10544 | struct got_entry *ent; |
5bd4f169 | 10545 | |
d881513a AM |
10546 | if (h != NULL) |
10547 | { | |
10548 | bfd_boolean dyn = htab->elf.dynamic_sections_created; | |
039b3fef AM |
10549 | if (!WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared, |
10550 | &h->elf) | |
d881513a | 10551 | || (info->shared |
039b3fef | 10552 | && SYMBOL_REFERENCES_LOCAL (info, &h->elf))) |
d881513a AM |
10553 | /* This is actually a static link, or it is a |
10554 | -Bsymbolic link and the symbol is defined | |
10555 | locally, or the symbol was forced to be local | |
10556 | because of a version file. */ | |
10557 | ; | |
10558 | else | |
10559 | { | |
039b3fef | 10560 | indx = h->elf.dynindx; |
d881513a AM |
10561 | unresolved_reloc = FALSE; |
10562 | } | |
039b3fef | 10563 | ent = h->elf.got.glist; |
d881513a | 10564 | } |
411e1bfb | 10565 | else |
5bd4f169 | 10566 | { |
d881513a AM |
10567 | if (local_got_ents == NULL) |
10568 | abort (); | |
10569 | ent = local_got_ents[r_symndx]; | |
5bd4f169 | 10570 | } |
d881513a AM |
10571 | |
10572 | for (; ent != NULL; ent = ent->next) | |
4cc603a5 | 10573 | if (ent->addend == orig_addend |
e717da7e | 10574 | && ent->owner == input_bfd |
d881513a AM |
10575 | && ent->tls_type == tls_type) |
10576 | break; | |
10577 | if (ent == NULL) | |
10578 | abort (); | |
10579 | offp = &ent->got.offset; | |
5bd4f169 | 10580 | } |
411e1bfb | 10581 | |
e717da7e AM |
10582 | got = ppc64_elf_tdata (input_bfd)->got; |
10583 | if (got == NULL) | |
10584 | abort (); | |
10585 | ||
411e1bfb AM |
10586 | /* The offset must always be a multiple of 8. We use the |
10587 | least significant bit to record whether we have already | |
10588 | processed this entry. */ | |
d881513a | 10589 | off = *offp; |
411e1bfb AM |
10590 | if ((off & 1) != 0) |
10591 | off &= ~1; | |
5bd4f169 AM |
10592 | else |
10593 | { | |
411e1bfb AM |
10594 | /* Generate relocs for the dynamic linker, except in |
10595 | the case of TLSLD where we'll use one entry per | |
10596 | module. */ | |
e717da7e AM |
10597 | asection *relgot = ppc64_elf_tdata (input_bfd)->relgot; |
10598 | ||
d881513a | 10599 | *offp = off | 1; |
4e795f50 AM |
10600 | if ((info->shared || indx != 0) |
10601 | && (h == NULL | |
039b3fef AM |
10602 | || ELF_ST_VISIBILITY (h->elf.other) == STV_DEFAULT |
10603 | || h->elf.root.type != bfd_link_hash_undefweak)) | |
5bd4f169 | 10604 | { |
e717da7e AM |
10605 | outrel.r_offset = (got->output_section->vma |
10606 | + got->output_offset | |
411e1bfb | 10607 | + off); |
4cc603a5 | 10608 | outrel.r_addend = addend; |
d881513a | 10609 | if (tls_type & (TLS_LD | TLS_GD)) |
5bd4f169 | 10610 | { |
411e1bfb | 10611 | outrel.r_addend = 0; |
e515b051 | 10612 | outrel.r_info = ELF64_R_INFO (indx, R_PPC64_DTPMOD64); |
d881513a AM |
10613 | if (tls_type == (TLS_TLS | TLS_GD)) |
10614 | { | |
e717da7e AM |
10615 | loc = relgot->contents; |
10616 | loc += (relgot->reloc_count++ | |
d881513a AM |
10617 | * sizeof (Elf64_External_Rela)); |
10618 | bfd_elf64_swap_reloca_out (output_bfd, | |
10619 | &outrel, loc); | |
e515b051 | 10620 | outrel.r_offset += 8; |
4cc603a5 | 10621 | outrel.r_addend = addend; |
d881513a AM |
10622 | outrel.r_info |
10623 | = ELF64_R_INFO (indx, R_PPC64_DTPREL64); | |
d881513a | 10624 | } |
411e1bfb | 10625 | } |
951fd09b | 10626 | else if (tls_type == (TLS_TLS | TLS_DTPREL)) |
411e1bfb | 10627 | outrel.r_info = ELF64_R_INFO (indx, R_PPC64_DTPREL64); |
951fd09b | 10628 | else if (tls_type == (TLS_TLS | TLS_TPREL)) |
411e1bfb AM |
10629 | outrel.r_info = ELF64_R_INFO (indx, R_PPC64_TPREL64); |
10630 | else if (indx == 0) | |
81407a69 AM |
10631 | { |
10632 | outrel.r_info = ELF64_R_INFO (indx, R_PPC64_RELATIVE); | |
10633 | ||
10634 | /* Write the .got section contents for the sake | |
10635 | of prelink. */ | |
e717da7e | 10636 | loc = got->contents + off; |
23fbd6fa JJ |
10637 | bfd_put_64 (output_bfd, outrel.r_addend + relocation, |
10638 | loc); | |
81407a69 | 10639 | } |
411e1bfb AM |
10640 | else |
10641 | outrel.r_info = ELF64_R_INFO (indx, R_PPC64_GLOB_DAT); | |
81407a69 AM |
10642 | |
10643 | if (indx == 0 && tls_type != (TLS_TLS | TLS_LD)) | |
e515b051 AM |
10644 | { |
10645 | outrel.r_addend += relocation; | |
10646 | if (tls_type & (TLS_GD | TLS_DTPREL | TLS_TPREL)) | |
e1918d23 | 10647 | outrel.r_addend -= htab->elf.tls_sec->vma; |
e515b051 | 10648 | } |
e717da7e AM |
10649 | loc = relgot->contents; |
10650 | loc += (relgot->reloc_count++ | |
411e1bfb AM |
10651 | * sizeof (Elf64_External_Rela)); |
10652 | bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc); | |
10653 | } | |
10654 | ||
ad8e1ba5 | 10655 | /* Init the .got section contents here if we're not |
81407a69 | 10656 | emitting a reloc. */ |
d881513a | 10657 | else |
411e1bfb | 10658 | { |
4cc603a5 | 10659 | relocation += addend; |
7b609f53 AM |
10660 | if (tls_type == (TLS_TLS | TLS_LD)) |
10661 | relocation = 1; | |
10662 | else if (tls_type != 0) | |
411e1bfb | 10663 | { |
e1918d23 | 10664 | relocation -= htab->elf.tls_sec->vma + DTP_OFFSET; |
7b609f53 | 10665 | if (tls_type == (TLS_TLS | TLS_TPREL)) |
411e1bfb | 10666 | relocation += DTP_OFFSET - TP_OFFSET; |
5bd4f169 | 10667 | |
7b609f53 AM |
10668 | if (tls_type == (TLS_TLS | TLS_GD)) |
10669 | { | |
10670 | bfd_put_64 (output_bfd, relocation, | |
e717da7e | 10671 | got->contents + off + 8); |
7b609f53 AM |
10672 | relocation = 1; |
10673 | } | |
411e1bfb | 10674 | } |
7b609f53 | 10675 | |
411e1bfb | 10676 | bfd_put_64 (output_bfd, relocation, |
e717da7e | 10677 | got->contents + off); |
5bd4f169 AM |
10678 | } |
10679 | } | |
10680 | ||
65f38f15 AM |
10681 | if (off >= (bfd_vma) -2) |
10682 | abort (); | |
10683 | ||
e717da7e | 10684 | relocation = got->output_offset + off; |
65f38f15 | 10685 | |
5bd4f169 | 10686 | /* TOC base (r2) is TOC start plus 0x8000. */ |
e717da7e | 10687 | addend = -TOC_BASE_OFF; |
5bd4f169 | 10688 | } |
65f38f15 AM |
10689 | break; |
10690 | ||
10691 | case R_PPC64_PLT16_HA: | |
10692 | case R_PPC64_PLT16_HI: | |
10693 | case R_PPC64_PLT16_LO: | |
10694 | case R_PPC64_PLT32: | |
10695 | case R_PPC64_PLT64: | |
10696 | /* Relocation is to the entry for this symbol in the | |
10697 | procedure linkage table. */ | |
10698 | ||
10699 | /* Resolve a PLT reloc against a local symbol directly, | |
10700 | without using the procedure linkage table. */ | |
10701 | if (h == NULL) | |
10702 | break; | |
10703 | ||
411e1bfb AM |
10704 | /* It's possible that we didn't make a PLT entry for this |
10705 | symbol. This happens when statically linking PIC code, | |
10706 | or when using -Bsymbolic. Go find a match if there is a | |
10707 | PLT entry. */ | |
4ce794b7 | 10708 | if (htab->plt != NULL) |
65f38f15 | 10709 | { |
411e1bfb | 10710 | struct plt_entry *ent; |
039b3fef | 10711 | for (ent = h->elf.plt.plist; ent != NULL; ent = ent->next) |
4cc603a5 | 10712 | if (ent->addend == orig_addend |
411e1bfb AM |
10713 | && ent->plt.offset != (bfd_vma) -1) |
10714 | { | |
4ce794b7 AM |
10715 | relocation = (htab->plt->output_section->vma |
10716 | + htab->plt->output_offset | |
411e1bfb AM |
10717 | + ent->plt.offset); |
10718 | unresolved_reloc = FALSE; | |
10719 | } | |
65f38f15 | 10720 | } |
65f38f15 | 10721 | break; |
5bd4f169 | 10722 | |
0b13192e AM |
10723 | case R_PPC64_TOC: |
10724 | /* Relocation value is TOC base. */ | |
10725 | relocation = TOCstart; | |
10726 | if (r_symndx == 0) | |
10727 | relocation += htab->stub_group[input_section->id].toc_off; | |
8517fae7 AM |
10728 | else if (unresolved_reloc) |
10729 | ; | |
10730 | else if (sec != NULL && sec->id <= htab->top_id) | |
0b13192e AM |
10731 | relocation += htab->stub_group[sec->id].toc_off; |
10732 | else | |
10733 | unresolved_reloc = TRUE; | |
10734 | goto dodyn2; | |
10735 | ||
5bd4f169 AM |
10736 | /* TOC16 relocs. We want the offset relative to the TOC base, |
10737 | which is the address of the start of the TOC plus 0x8000. | |
10738 | The TOC consists of sections .got, .toc, .tocbss, and .plt, | |
10739 | in this order. */ | |
65f38f15 AM |
10740 | case R_PPC64_TOC16: |
10741 | case R_PPC64_TOC16_LO: | |
10742 | case R_PPC64_TOC16_HI: | |
10743 | case R_PPC64_TOC16_DS: | |
10744 | case R_PPC64_TOC16_LO_DS: | |
10745 | case R_PPC64_TOC16_HA: | |
ad8e1ba5 | 10746 | addend -= TOCstart + htab->stub_group[input_section->id].toc_off; |
5bd4f169 AM |
10747 | break; |
10748 | ||
10749 | /* Relocate against the beginning of the section. */ | |
65f38f15 AM |
10750 | case R_PPC64_SECTOFF: |
10751 | case R_PPC64_SECTOFF_LO: | |
10752 | case R_PPC64_SECTOFF_HI: | |
10753 | case R_PPC64_SECTOFF_DS: | |
10754 | case R_PPC64_SECTOFF_LO_DS: | |
10755 | case R_PPC64_SECTOFF_HA: | |
4ce794b7 | 10756 | if (sec != NULL) |
65f38f15 | 10757 | addend -= sec->output_section->vma; |
5bd4f169 AM |
10758 | break; |
10759 | ||
721956f4 AM |
10760 | case R_PPC64_REL14: |
10761 | case R_PPC64_REL14_BRNTAKEN: | |
10762 | case R_PPC64_REL14_BRTAKEN: | |
5d1634d7 AM |
10763 | case R_PPC64_REL24: |
10764 | break; | |
10765 | ||
411e1bfb AM |
10766 | case R_PPC64_TPREL16: |
10767 | case R_PPC64_TPREL16_LO: | |
10768 | case R_PPC64_TPREL16_HI: | |
10769 | case R_PPC64_TPREL16_HA: | |
10770 | case R_PPC64_TPREL16_DS: | |
10771 | case R_PPC64_TPREL16_LO_DS: | |
10772 | case R_PPC64_TPREL16_HIGHER: | |
10773 | case R_PPC64_TPREL16_HIGHERA: | |
10774 | case R_PPC64_TPREL16_HIGHEST: | |
10775 | case R_PPC64_TPREL16_HIGHESTA: | |
e1918d23 | 10776 | addend -= htab->elf.tls_sec->vma + TP_OFFSET; |
411e1bfb AM |
10777 | if (info->shared) |
10778 | /* The TPREL16 relocs shouldn't really be used in shared | |
10779 | libs as they will result in DT_TEXTREL being set, but | |
10780 | support them anyway. */ | |
10781 | goto dodyn; | |
10782 | break; | |
10783 | ||
10784 | case R_PPC64_DTPREL16: | |
10785 | case R_PPC64_DTPREL16_LO: | |
10786 | case R_PPC64_DTPREL16_HI: | |
10787 | case R_PPC64_DTPREL16_HA: | |
10788 | case R_PPC64_DTPREL16_DS: | |
10789 | case R_PPC64_DTPREL16_LO_DS: | |
10790 | case R_PPC64_DTPREL16_HIGHER: | |
10791 | case R_PPC64_DTPREL16_HIGHERA: | |
10792 | case R_PPC64_DTPREL16_HIGHEST: | |
10793 | case R_PPC64_DTPREL16_HIGHESTA: | |
e1918d23 | 10794 | addend -= htab->elf.tls_sec->vma + DTP_OFFSET; |
411e1bfb AM |
10795 | break; |
10796 | ||
e515b051 AM |
10797 | case R_PPC64_DTPMOD64: |
10798 | relocation = 1; | |
10799 | addend = 0; | |
10800 | goto dodyn; | |
10801 | ||
411e1bfb | 10802 | case R_PPC64_TPREL64: |
e1918d23 | 10803 | addend -= htab->elf.tls_sec->vma + TP_OFFSET; |
411e1bfb AM |
10804 | goto dodyn; |
10805 | ||
10806 | case R_PPC64_DTPREL64: | |
e1918d23 | 10807 | addend -= htab->elf.tls_sec->vma + DTP_OFFSET; |
411e1bfb AM |
10808 | /* Fall thru */ |
10809 | ||
65f38f15 AM |
10810 | /* Relocations that may need to be propagated if this is a |
10811 | dynamic object. */ | |
04c9666a | 10812 | case R_PPC64_REL30: |
65f38f15 AM |
10813 | case R_PPC64_REL32: |
10814 | case R_PPC64_REL64: | |
10815 | case R_PPC64_ADDR14: | |
10816 | case R_PPC64_ADDR14_BRNTAKEN: | |
10817 | case R_PPC64_ADDR14_BRTAKEN: | |
10818 | case R_PPC64_ADDR16: | |
10819 | case R_PPC64_ADDR16_DS: | |
10820 | case R_PPC64_ADDR16_HA: | |
10821 | case R_PPC64_ADDR16_HI: | |
10822 | case R_PPC64_ADDR16_HIGHER: | |
10823 | case R_PPC64_ADDR16_HIGHERA: | |
10824 | case R_PPC64_ADDR16_HIGHEST: | |
10825 | case R_PPC64_ADDR16_HIGHESTA: | |
10826 | case R_PPC64_ADDR16_LO: | |
10827 | case R_PPC64_ADDR16_LO_DS: | |
10828 | case R_PPC64_ADDR24: | |
65f38f15 AM |
10829 | case R_PPC64_ADDR32: |
10830 | case R_PPC64_ADDR64: | |
10831 | case R_PPC64_UADDR16: | |
10832 | case R_PPC64_UADDR32: | |
10833 | case R_PPC64_UADDR64: | |
ec338859 AM |
10834 | /* r_symndx will be zero only for relocs against symbols |
10835 | from removed linkonce sections, or sections discarded by | |
10836 | a linker script. */ | |
411e1bfb | 10837 | dodyn: |
5d1634d7 | 10838 | if (r_symndx == 0) |
b1e24c02 DJ |
10839 | { |
10840 | _bfd_clear_contents (ppc64_elf_howto_table[r_type], input_bfd, | |
10841 | contents + rel->r_offset); | |
10842 | break; | |
10843 | } | |
5d1634d7 AM |
10844 | /* Fall thru. */ |
10845 | ||
0b13192e | 10846 | dodyn2: |
5d1634d7 | 10847 | if ((input_section->flags & SEC_ALLOC) == 0) |
ec338859 AM |
10848 | break; |
10849 | ||
41bd81ab AM |
10850 | if (NO_OPD_RELOCS && is_opd) |
10851 | break; | |
10852 | ||
65f38f15 | 10853 | if ((info->shared |
4e795f50 | 10854 | && (h == NULL |
039b3fef AM |
10855 | || ELF_ST_VISIBILITY (h->elf.other) == STV_DEFAULT |
10856 | || h->elf.root.type != bfd_link_hash_undefweak) | |
411e1bfb | 10857 | && (MUST_BE_DYN_RELOC (r_type) |
039b3fef | 10858 | || !SYMBOL_CALLS_LOCAL (info, &h->elf))) |
f4656909 AM |
10859 | || (ELIMINATE_COPY_RELOCS |
10860 | && !info->shared | |
65f38f15 | 10861 | && h != NULL |
039b3fef | 10862 | && h->elf.dynindx != -1 |
f5385ebf AM |
10863 | && !h->elf.non_got_ref |
10864 | && h->elf.def_dynamic | |
10865 | && !h->elf.def_regular)) | |
65f38f15 AM |
10866 | { |
10867 | Elf_Internal_Rela outrel; | |
b34976b6 | 10868 | bfd_boolean skip, relocate; |
65f38f15 | 10869 | asection *sreloc; |
947216bf | 10870 | bfd_byte *loc; |
1cf1f670 | 10871 | bfd_vma out_off; |
65f38f15 AM |
10872 | |
10873 | /* When generating a dynamic object, these relocations | |
10874 | are copied into the output file to be resolved at run | |
10875 | time. */ | |
10876 | ||
b34976b6 AM |
10877 | skip = FALSE; |
10878 | relocate = FALSE; | |
65f38f15 | 10879 | |
1cf1f670 AM |
10880 | out_off = _bfd_elf_section_offset (output_bfd, info, |
10881 | input_section, rel->r_offset); | |
10882 | if (out_off == (bfd_vma) -1) | |
b34976b6 | 10883 | skip = TRUE; |
1cf1f670 | 10884 | else if (out_off == (bfd_vma) -2) |
b34976b6 | 10885 | skip = TRUE, relocate = TRUE; |
1cf1f670 AM |
10886 | out_off += (input_section->output_section->vma |
10887 | + input_section->output_offset); | |
10888 | outrel.r_offset = out_off; | |
411e1bfb | 10889 | outrel.r_addend = rel->r_addend; |
65f38f15 | 10890 | |
1cf1f670 AM |
10891 | /* Optimize unaligned reloc use. */ |
10892 | if ((r_type == R_PPC64_ADDR64 && (out_off & 7) != 0) | |
10893 | || (r_type == R_PPC64_UADDR64 && (out_off & 7) == 0)) | |
10894 | r_type ^= R_PPC64_ADDR64 ^ R_PPC64_UADDR64; | |
10895 | else if ((r_type == R_PPC64_ADDR32 && (out_off & 3) != 0) | |
10896 | || (r_type == R_PPC64_UADDR32 && (out_off & 3) == 0)) | |
10897 | r_type ^= R_PPC64_ADDR32 ^ R_PPC64_UADDR32; | |
10898 | else if ((r_type == R_PPC64_ADDR16 && (out_off & 1) != 0) | |
10899 | || (r_type == R_PPC64_UADDR16 && (out_off & 1) == 0)) | |
10900 | r_type ^= R_PPC64_ADDR16 ^ R_PPC64_UADDR16; | |
10901 | ||
65f38f15 | 10902 | if (skip) |
0bb2d96a | 10903 | memset (&outrel, 0, sizeof outrel); |
039b3fef | 10904 | else if (!SYMBOL_REFERENCES_LOCAL (info, &h->elf) |
0b13192e AM |
10905 | && !is_opd |
10906 | && r_type != R_PPC64_TOC) | |
039b3fef | 10907 | outrel.r_info = ELF64_R_INFO (h->elf.dynindx, r_type); |
65f38f15 AM |
10908 | else |
10909 | { | |
41bd81ab AM |
10910 | /* This symbol is local, or marked to become local, |
10911 | or this is an opd section reloc which must point | |
10912 | at a local function. */ | |
65f38f15 | 10913 | outrel.r_addend += relocation; |
e86ce104 | 10914 | if (r_type == R_PPC64_ADDR64 || r_type == R_PPC64_TOC) |
65f38f15 | 10915 | { |
3fad3c7c | 10916 | if (is_opd && h != NULL) |
afbe61cf AM |
10917 | { |
10918 | /* Lie about opd entries. This case occurs | |
10919 | when building shared libraries and we | |
10920 | reference a function in another shared | |
3fad3c7c AM |
10921 | lib. The same thing happens for a weak |
10922 | definition in an application that's | |
10923 | overridden by a strong definition in a | |
10924 | shared lib. (I believe this is a generic | |
10925 | bug in binutils handling of weak syms.) | |
10926 | In these cases we won't use the opd | |
1e2f5b6e | 10927 | entry in this lib. */ |
b34976b6 | 10928 | unresolved_reloc = FALSE; |
afbe61cf | 10929 | } |
65f38f15 | 10930 | outrel.r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE); |
81407a69 AM |
10931 | |
10932 | /* We need to relocate .opd contents for ld.so. | |
10933 | Prelink also wants simple and consistent rules | |
10934 | for relocs. This make all RELATIVE relocs have | |
10935 | *r_offset equal to r_addend. */ | |
10936 | relocate = TRUE; | |
65f38f15 AM |
10937 | } |
10938 | else | |
10939 | { | |
10940 | long indx = 0; | |
10941 | ||
41bd81ab | 10942 | if (bfd_is_abs_section (sec)) |
65f38f15 AM |
10943 | ; |
10944 | else if (sec == NULL || sec->owner == NULL) | |
10945 | { | |
10946 | bfd_set_error (bfd_error_bad_value); | |
b34976b6 | 10947 | return FALSE; |
65f38f15 AM |
10948 | } |
10949 | else | |
10950 | { | |
10951 | asection *osec; | |
10952 | ||
10953 | osec = sec->output_section; | |
10954 | indx = elf_section_data (osec)->dynindx; | |
10955 | ||
74541ad4 AM |
10956 | if (indx == 0) |
10957 | { | |
10958 | if ((osec->flags & SEC_READONLY) == 0 | |
10959 | && htab->elf.data_index_section != NULL) | |
10960 | osec = htab->elf.data_index_section; | |
10961 | else | |
10962 | osec = htab->elf.text_index_section; | |
10963 | indx = elf_section_data (osec)->dynindx; | |
10964 | } | |
10965 | BFD_ASSERT (indx != 0); | |
10966 | ||
65f38f15 AM |
10967 | /* We are turning this relocation into one |
10968 | against a section symbol, so subtract out | |
10969 | the output section's address but not the | |
10970 | offset of the input section in the output | |
10971 | section. */ | |
10972 | outrel.r_addend -= osec->vma; | |
10973 | } | |
10974 | ||
10975 | outrel.r_info = ELF64_R_INFO (indx, r_type); | |
10976 | } | |
10977 | } | |
10978 | ||
10979 | sreloc = elf_section_data (input_section)->sreloc; | |
10980 | if (sreloc == NULL) | |
10981 | abort (); | |
10982 | ||
dfbb6ac9 AM |
10983 | if (sreloc->reloc_count * sizeof (Elf64_External_Rela) |
10984 | >= sreloc->size) | |
10985 | abort (); | |
947216bf AM |
10986 | loc = sreloc->contents; |
10987 | loc += sreloc->reloc_count++ * sizeof (Elf64_External_Rela); | |
65f38f15 AM |
10988 | bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc); |
10989 | ||
10990 | /* If this reloc is against an external symbol, it will | |
10991 | be computed at runtime, so there's no need to do | |
81407a69 AM |
10992 | anything now. However, for the sake of prelink ensure |
10993 | that the section contents are a known value. */ | |
65f38f15 | 10994 | if (! relocate) |
81407a69 AM |
10995 | { |
10996 | unresolved_reloc = FALSE; | |
10997 | /* The value chosen here is quite arbitrary as ld.so | |
10998 | ignores section contents except for the special | |
10999 | case of .opd where the contents might be accessed | |
11000 | before relocation. Choose zero, as that won't | |
11001 | cause reloc overflow. */ | |
11002 | relocation = 0; | |
11003 | addend = 0; | |
11004 | /* Use *r_offset == r_addend for R_PPC64_ADDR64 relocs | |
11005 | to improve backward compatibility with older | |
11006 | versions of ld. */ | |
11007 | if (r_type == R_PPC64_ADDR64) | |
11008 | addend = outrel.r_addend; | |
11009 | /* Adjust pc_relative relocs to have zero in *r_offset. */ | |
4ce794b7 | 11010 | else if (ppc64_elf_howto_table[r_type]->pc_relative) |
000732f7 AM |
11011 | addend = (input_section->output_section->vma |
11012 | + input_section->output_offset | |
11013 | + rel->r_offset); | |
81407a69 | 11014 | } |
65f38f15 | 11015 | } |
5bd4f169 AM |
11016 | break; |
11017 | ||
65f38f15 AM |
11018 | case R_PPC64_COPY: |
11019 | case R_PPC64_GLOB_DAT: | |
11020 | case R_PPC64_JMP_SLOT: | |
11021 | case R_PPC64_RELATIVE: | |
11022 | /* We shouldn't ever see these dynamic relocs in relocatable | |
11023 | files. */ | |
ae9a127f | 11024 | /* Fall through. */ |
65f38f15 AM |
11025 | |
11026 | case R_PPC64_PLTGOT16: | |
11027 | case R_PPC64_PLTGOT16_DS: | |
11028 | case R_PPC64_PLTGOT16_HA: | |
11029 | case R_PPC64_PLTGOT16_HI: | |
11030 | case R_PPC64_PLTGOT16_LO: | |
11031 | case R_PPC64_PLTGOT16_LO_DS: | |
11032 | case R_PPC64_PLTREL32: | |
11033 | case R_PPC64_PLTREL64: | |
11034 | /* These ones haven't been implemented yet. */ | |
11035 | ||
11036 | (*_bfd_error_handler) | |
d003868e AM |
11037 | (_("%B: relocation %s is not supported for symbol %s."), |
11038 | input_bfd, | |
4ce794b7 | 11039 | ppc64_elf_howto_table[r_type]->name, sym_name); |
5bd4f169 AM |
11040 | |
11041 | bfd_set_error (bfd_error_invalid_operation); | |
b34976b6 | 11042 | ret = FALSE; |
5bd4f169 | 11043 | continue; |
65f38f15 | 11044 | } |
5bd4f169 | 11045 | |
65f38f15 AM |
11046 | /* Do any further special processing. */ |
11047 | switch (r_type) | |
11048 | { | |
11049 | default: | |
11050 | break; | |
11051 | ||
11052 | case R_PPC64_ADDR16_HA: | |
11053 | case R_PPC64_ADDR16_HIGHERA: | |
11054 | case R_PPC64_ADDR16_HIGHESTA: | |
65f38f15 AM |
11055 | case R_PPC64_TOC16_HA: |
11056 | case R_PPC64_SECTOFF_HA: | |
411e1bfb AM |
11057 | case R_PPC64_TPREL16_HA: |
11058 | case R_PPC64_DTPREL16_HA: | |
411e1bfb AM |
11059 | case R_PPC64_TPREL16_HIGHER: |
11060 | case R_PPC64_TPREL16_HIGHERA: | |
11061 | case R_PPC64_TPREL16_HIGHEST: | |
11062 | case R_PPC64_TPREL16_HIGHESTA: | |
11063 | case R_PPC64_DTPREL16_HIGHER: | |
11064 | case R_PPC64_DTPREL16_HIGHERA: | |
11065 | case R_PPC64_DTPREL16_HIGHEST: | |
11066 | case R_PPC64_DTPREL16_HIGHESTA: | |
65f38f15 AM |
11067 | /* It's just possible that this symbol is a weak symbol |
11068 | that's not actually defined anywhere. In that case, | |
11069 | 'sec' would be NULL, and we should leave the symbol | |
11070 | alone (it will be set to zero elsewhere in the link). */ | |
5c5f6e17 AM |
11071 | if (sec == NULL) |
11072 | break; | |
11073 | /* Fall thru */ | |
11074 | ||
11075 | case R_PPC64_GOT16_HA: | |
11076 | case R_PPC64_PLTGOT16_HA: | |
11077 | case R_PPC64_PLT16_HA: | |
11078 | case R_PPC64_GOT_TLSGD16_HA: | |
11079 | case R_PPC64_GOT_TLSLD16_HA: | |
11080 | case R_PPC64_GOT_TPREL16_HA: | |
11081 | case R_PPC64_GOT_DTPREL16_HA: | |
11082 | /* Add 0x10000 if sign bit in 0:15 is set. | |
11083 | Bits 0:15 are not used. */ | |
11084 | addend += 0x8000; | |
65f38f15 AM |
11085 | break; |
11086 | ||
11087 | case R_PPC64_ADDR16_DS: | |
11088 | case R_PPC64_ADDR16_LO_DS: | |
11089 | case R_PPC64_GOT16_DS: | |
11090 | case R_PPC64_GOT16_LO_DS: | |
11091 | case R_PPC64_PLT16_LO_DS: | |
11092 | case R_PPC64_SECTOFF_DS: | |
11093 | case R_PPC64_SECTOFF_LO_DS: | |
11094 | case R_PPC64_TOC16_DS: | |
11095 | case R_PPC64_TOC16_LO_DS: | |
11096 | case R_PPC64_PLTGOT16_DS: | |
11097 | case R_PPC64_PLTGOT16_LO_DS: | |
411e1bfb AM |
11098 | case R_PPC64_GOT_TPREL16_DS: |
11099 | case R_PPC64_GOT_TPREL16_LO_DS: | |
11100 | case R_PPC64_GOT_DTPREL16_DS: | |
11101 | case R_PPC64_GOT_DTPREL16_LO_DS: | |
11102 | case R_PPC64_TPREL16_DS: | |
11103 | case R_PPC64_TPREL16_LO_DS: | |
11104 | case R_PPC64_DTPREL16_DS: | |
11105 | case R_PPC64_DTPREL16_LO_DS: | |
adadcc0c AM |
11106 | insn = bfd_get_32 (input_bfd, contents + (rel->r_offset & ~3)); |
11107 | mask = 3; | |
11108 | /* If this reloc is against an lq insn, then the value must be | |
11109 | a multiple of 16. This is somewhat of a hack, but the | |
11110 | "correct" way to do this by defining _DQ forms of all the | |
11111 | _DS relocs bloats all reloc switches in this file. It | |
11112 | doesn't seem to make much sense to use any of these relocs | |
11113 | in data, so testing the insn should be safe. */ | |
494dac0c | 11114 | if ((insn & (0x3f << 26)) == (56u << 26)) |
adadcc0c AM |
11115 | mask = 15; |
11116 | if (((relocation + addend) & mask) != 0) | |
65f38f15 AM |
11117 | { |
11118 | (*_bfd_error_handler) | |
d003868e AM |
11119 | (_("%B: error: relocation %s not a multiple of %d"), |
11120 | input_bfd, | |
4ce794b7 | 11121 | ppc64_elf_howto_table[r_type]->name, |
adadcc0c | 11122 | mask + 1); |
65f38f15 | 11123 | bfd_set_error (bfd_error_bad_value); |
b34976b6 | 11124 | ret = FALSE; |
65f38f15 AM |
11125 | continue; |
11126 | } | |
11127 | break; | |
5bd4f169 AM |
11128 | } |
11129 | ||
239e1f3a AM |
11130 | /* Dynamic relocs are not propagated for SEC_DEBUGGING sections |
11131 | because such sections are not SEC_ALLOC and thus ld.so will | |
11132 | not process them. */ | |
65f38f15 | 11133 | if (unresolved_reloc |
239e1f3a | 11134 | && !((input_section->flags & SEC_DEBUGGING) != 0 |
f5385ebf | 11135 | && h->elf.def_dynamic)) |
9c07fe7c AM |
11136 | { |
11137 | (*_bfd_error_handler) | |
d003868e AM |
11138 | (_("%B(%A+0x%lx): unresolvable %s relocation against symbol `%s'"), |
11139 | input_bfd, | |
11140 | input_section, | |
9c07fe7c | 11141 | (long) rel->r_offset, |
7b609f53 | 11142 | ppc64_elf_howto_table[(int) r_type]->name, |
039b3fef | 11143 | h->elf.root.root.string); |
b34976b6 | 11144 | ret = FALSE; |
9c07fe7c | 11145 | } |
5bd4f169 | 11146 | |
65f38f15 | 11147 | r = _bfd_final_link_relocate (ppc64_elf_howto_table[(int) r_type], |
5bd4f169 AM |
11148 | input_bfd, |
11149 | input_section, | |
11150 | contents, | |
411e1bfb | 11151 | rel->r_offset, |
5bd4f169 AM |
11152 | relocation, |
11153 | addend); | |
11154 | ||
ef60b7ff | 11155 | if (r != bfd_reloc_ok) |
5bd4f169 | 11156 | { |
cd27b276 AM |
11157 | if (sym_name == NULL) |
11158 | sym_name = "(null)"; | |
11159 | if (r == bfd_reloc_overflow) | |
5bd4f169 | 11160 | { |
cd27b276 AM |
11161 | if (warned) |
11162 | continue; | |
11163 | if (h != NULL | |
039b3fef | 11164 | && h->elf.root.type == bfd_link_hash_undefweak |
4ce794b7 | 11165 | && ppc64_elf_howto_table[r_type]->pc_relative) |
5bd4f169 AM |
11166 | { |
11167 | /* Assume this is a call protected by other code that | |
11168 | detects the symbol is undefined. If this is the case, | |
11169 | we can safely ignore the overflow. If not, the | |
11170 | program is hosed anyway, and a little warning isn't | |
11171 | going to help. */ | |
11172 | ||
11173 | continue; | |
11174 | } | |
11175 | ||
ef60b7ff | 11176 | if (!((*info->callbacks->reloc_overflow) |
dfeffb9f L |
11177 | (info, (h ? &h->elf.root : NULL), sym_name, |
11178 | ppc64_elf_howto_table[r_type]->name, | |
4cc603a5 | 11179 | orig_addend, input_bfd, input_section, rel->r_offset))) |
b34976b6 | 11180 | return FALSE; |
ef60b7ff AM |
11181 | } |
11182 | else | |
11183 | { | |
11184 | (*_bfd_error_handler) | |
d003868e AM |
11185 | (_("%B(%A+0x%lx): %s reloc against `%s': error %d"), |
11186 | input_bfd, | |
11187 | input_section, | |
7b609f53 | 11188 | (long) rel->r_offset, |
4ce794b7 | 11189 | ppc64_elf_howto_table[r_type]->name, |
7b609f53 AM |
11190 | sym_name, |
11191 | (int) r); | |
b34976b6 | 11192 | ret = FALSE; |
ef60b7ff | 11193 | } |
5bd4f169 | 11194 | } |
5bd4f169 AM |
11195 | } |
11196 | ||
645ea6a9 AM |
11197 | /* If we're emitting relocations, then shortly after this function |
11198 | returns, reloc offsets and addends for this section will be | |
11199 | adjusted. Worse, reloc symbol indices will be for the output | |
8860955f AM |
11200 | file rather than the input. Save a copy of the relocs for |
11201 | opd_entry_value. */ | |
4cc603a5 | 11202 | if (is_opd && (info->emitrelocations || info->relocatable)) |
8860955f AM |
11203 | { |
11204 | bfd_size_type amt; | |
11205 | amt = input_section->reloc_count * sizeof (Elf_Internal_Rela); | |
11206 | rel = bfd_alloc (input_bfd, amt); | |
11207 | BFD_ASSERT (ppc64_elf_tdata (input_bfd)->opd_relocs == NULL); | |
11208 | ppc64_elf_tdata (input_bfd)->opd_relocs = rel; | |
11209 | if (rel == NULL) | |
11210 | return FALSE; | |
11211 | memcpy (rel, relocs, amt); | |
11212 | } | |
5bd4f169 AM |
11213 | return ret; |
11214 | } | |
11215 | ||
754021d0 AM |
11216 | /* Adjust the value of any local symbols in opd sections. */ |
11217 | ||
11218 | static bfd_boolean | |
11219 | ppc64_elf_output_symbol_hook (struct bfd_link_info *info, | |
11220 | const char *name ATTRIBUTE_UNUSED, | |
11221 | Elf_Internal_Sym *elfsym, | |
11222 | asection *input_sec, | |
11223 | struct elf_link_hash_entry *h) | |
11224 | { | |
4025353c | 11225 | long *opd_adjust, adjust; |
754021d0 AM |
11226 | bfd_vma value; |
11227 | ||
4025353c AM |
11228 | if (h != NULL) |
11229 | return TRUE; | |
11230 | ||
11231 | opd_adjust = get_opd_info (input_sec); | |
11232 | if (opd_adjust == NULL) | |
754021d0 AM |
11233 | return TRUE; |
11234 | ||
11235 | value = elfsym->st_value - input_sec->output_offset; | |
11236 | if (!info->relocatable) | |
11237 | value -= input_sec->output_section->vma; | |
11238 | ||
3f764659 | 11239 | adjust = opd_adjust[value / 8]; |
4025353c AM |
11240 | if (adjust == -1) |
11241 | elfsym->st_value = 0; | |
11242 | else | |
11243 | elfsym->st_value += adjust; | |
754021d0 AM |
11244 | return TRUE; |
11245 | } | |
11246 | ||
5bd4f169 AM |
11247 | /* Finish up dynamic symbol handling. We set the contents of various |
11248 | dynamic sections here. */ | |
11249 | ||
b34976b6 | 11250 | static bfd_boolean |
4ce794b7 AM |
11251 | ppc64_elf_finish_dynamic_symbol (bfd *output_bfd, |
11252 | struct bfd_link_info *info, | |
11253 | struct elf_link_hash_entry *h, | |
11254 | Elf_Internal_Sym *sym) | |
5bd4f169 | 11255 | { |
65f38f15 | 11256 | struct ppc_link_hash_table *htab; |
8387904d AM |
11257 | struct plt_entry *ent; |
11258 | Elf_Internal_Rela rela; | |
11259 | bfd_byte *loc; | |
5bd4f169 | 11260 | |
65f38f15 | 11261 | htab = ppc_hash_table (info); |
5bd4f169 | 11262 | |
8387904d AM |
11263 | for (ent = h->plt.plist; ent != NULL; ent = ent->next) |
11264 | if (ent->plt.offset != (bfd_vma) -1) | |
11265 | { | |
11266 | /* This symbol has an entry in the procedure linkage | |
11267 | table. Set it up. */ | |
11268 | ||
11269 | if (htab->plt == NULL | |
11270 | || htab->relplt == NULL | |
11271 | || htab->glink == NULL) | |
11272 | abort (); | |
11273 | ||
11274 | /* Create a JMP_SLOT reloc to inform the dynamic linker to | |
11275 | fill in the PLT entry. */ | |
11276 | rela.r_offset = (htab->plt->output_section->vma | |
11277 | + htab->plt->output_offset | |
11278 | + ent->plt.offset); | |
11279 | rela.r_info = ELF64_R_INFO (h->dynindx, R_PPC64_JMP_SLOT); | |
11280 | rela.r_addend = ent->addend; | |
11281 | ||
11282 | loc = htab->relplt->contents; | |
11283 | loc += ((ent->plt.offset - PLT_INITIAL_ENTRY_SIZE) / PLT_ENTRY_SIZE | |
11284 | * sizeof (Elf64_External_Rela)); | |
11285 | bfd_elf64_swap_reloca_out (output_bfd, &rela, loc); | |
11286 | } | |
5bd4f169 | 11287 | |
f5385ebf | 11288 | if (h->needs_copy) |
5bd4f169 | 11289 | { |
5bd4f169 | 11290 | Elf_Internal_Rela rela; |
947216bf | 11291 | bfd_byte *loc; |
5bd4f169 | 11292 | |
65f38f15 | 11293 | /* This symbol needs a copy reloc. Set it up. */ |
5bd4f169 | 11294 | |
65f38f15 AM |
11295 | if (h->dynindx == -1 |
11296 | || (h->root.type != bfd_link_hash_defined | |
11297 | && h->root.type != bfd_link_hash_defweak) | |
4ce794b7 | 11298 | || htab->relbss == NULL) |
65f38f15 | 11299 | abort (); |
5bd4f169 AM |
11300 | |
11301 | rela.r_offset = (h->root.u.def.value | |
11302 | + h->root.u.def.section->output_section->vma | |
11303 | + h->root.u.def.section->output_offset); | |
11304 | rela.r_info = ELF64_R_INFO (h->dynindx, R_PPC64_COPY); | |
11305 | rela.r_addend = 0; | |
4ce794b7 AM |
11306 | loc = htab->relbss->contents; |
11307 | loc += htab->relbss->reloc_count++ * sizeof (Elf64_External_Rela); | |
65f38f15 | 11308 | bfd_elf64_swap_reloca_out (output_bfd, &rela, loc); |
5bd4f169 AM |
11309 | } |
11310 | ||
5bd4f169 AM |
11311 | /* Mark some specially defined symbols as absolute. */ |
11312 | if (strcmp (h->root.root.string, "_DYNAMIC") == 0) | |
11313 | sym->st_shndx = SHN_ABS; | |
11314 | ||
b34976b6 | 11315 | return TRUE; |
5bd4f169 AM |
11316 | } |
11317 | ||
65f38f15 AM |
11318 | /* Used to decide how to sort relocs in an optimal manner for the |
11319 | dynamic linker, before writing them out. */ | |
11320 | ||
11321 | static enum elf_reloc_type_class | |
4ce794b7 | 11322 | ppc64_elf_reloc_type_class (const Elf_Internal_Rela *rela) |
65f38f15 | 11323 | { |
04c9666a | 11324 | enum elf_ppc64_reloc_type r_type; |
a33d1f77 | 11325 | |
4ce794b7 | 11326 | r_type = ELF64_R_TYPE (rela->r_info); |
a33d1f77 | 11327 | switch (r_type) |
65f38f15 AM |
11328 | { |
11329 | case R_PPC64_RELATIVE: | |
11330 | return reloc_class_relative; | |
11331 | case R_PPC64_JMP_SLOT: | |
11332 | return reloc_class_plt; | |
11333 | case R_PPC64_COPY: | |
11334 | return reloc_class_copy; | |
11335 | default: | |
11336 | return reloc_class_normal; | |
11337 | } | |
11338 | } | |
11339 | ||
5bd4f169 AM |
11340 | /* Finish up the dynamic sections. */ |
11341 | ||
b34976b6 | 11342 | static bfd_boolean |
4ce794b7 AM |
11343 | ppc64_elf_finish_dynamic_sections (bfd *output_bfd, |
11344 | struct bfd_link_info *info) | |
5bd4f169 | 11345 | { |
65f38f15 AM |
11346 | struct ppc_link_hash_table *htab; |
11347 | bfd *dynobj; | |
5bd4f169 | 11348 | asection *sdyn; |
5bd4f169 | 11349 | |
65f38f15 AM |
11350 | htab = ppc_hash_table (info); |
11351 | dynobj = htab->elf.dynobj; | |
5bd4f169 AM |
11352 | sdyn = bfd_get_section_by_name (dynobj, ".dynamic"); |
11353 | ||
65f38f15 | 11354 | if (htab->elf.dynamic_sections_created) |
5bd4f169 | 11355 | { |
5bd4f169 AM |
11356 | Elf64_External_Dyn *dyncon, *dynconend; |
11357 | ||
4ce794b7 | 11358 | if (sdyn == NULL || htab->got == NULL) |
65f38f15 | 11359 | abort (); |
5bd4f169 AM |
11360 | |
11361 | dyncon = (Elf64_External_Dyn *) sdyn->contents; | |
eea6121a | 11362 | dynconend = (Elf64_External_Dyn *) (sdyn->contents + sdyn->size); |
5bd4f169 AM |
11363 | for (; dyncon < dynconend; dyncon++) |
11364 | { | |
11365 | Elf_Internal_Dyn dyn; | |
19397422 | 11366 | asection *s; |
5bd4f169 AM |
11367 | |
11368 | bfd_elf64_swap_dyn_in (dynobj, dyncon, &dyn); | |
11369 | ||
11370 | switch (dyn.d_tag) | |
11371 | { | |
65f38f15 AM |
11372 | default: |
11373 | continue; | |
5bd4f169 | 11374 | |
5d1634d7 | 11375 | case DT_PPC64_GLINK: |
4ce794b7 | 11376 | s = htab->glink; |
6348e046 | 11377 | dyn.d_un.d_ptr = s->output_section->vma + s->output_offset; |
ad8e1ba5 AM |
11378 | /* We stupidly defined DT_PPC64_GLINK to be the start |
11379 | of glink rather than the first entry point, which is | |
11380 | what ld.so needs, and now have a bigger stub to | |
11381 | support automatic multiple TOCs. */ | |
11382 | dyn.d_un.d_ptr += GLINK_CALL_STUB_SIZE - 32; | |
5d1634d7 AM |
11383 | break; |
11384 | ||
19397422 AM |
11385 | case DT_PPC64_OPD: |
11386 | s = bfd_get_section_by_name (output_bfd, ".opd"); | |
6348e046 AM |
11387 | if (s == NULL) |
11388 | continue; | |
11389 | dyn.d_un.d_ptr = s->vma; | |
19397422 AM |
11390 | break; |
11391 | ||
11392 | case DT_PPC64_OPDSZ: | |
11393 | s = bfd_get_section_by_name (output_bfd, ".opd"); | |
6348e046 AM |
11394 | if (s == NULL) |
11395 | continue; | |
eea6121a | 11396 | dyn.d_un.d_val = s->size; |
19397422 AM |
11397 | break; |
11398 | ||
65f38f15 | 11399 | case DT_PLTGOT: |
4ce794b7 | 11400 | s = htab->plt; |
6348e046 | 11401 | dyn.d_un.d_ptr = s->output_section->vma + s->output_offset; |
65f38f15 AM |
11402 | break; |
11403 | ||
11404 | case DT_JMPREL: | |
4ce794b7 | 11405 | s = htab->relplt; |
6348e046 | 11406 | dyn.d_un.d_ptr = s->output_section->vma + s->output_offset; |
65f38f15 | 11407 | break; |
5bd4f169 | 11408 | |
65f38f15 | 11409 | case DT_PLTRELSZ: |
eea6121a | 11410 | dyn.d_un.d_val = htab->relplt->size; |
5d1634d7 AM |
11411 | break; |
11412 | ||
11413 | case DT_RELASZ: | |
11414 | /* Don't count procedure linkage table relocs in the | |
11415 | overall reloc count. */ | |
4ce794b7 | 11416 | s = htab->relplt; |
6348e046 AM |
11417 | if (s == NULL) |
11418 | continue; | |
eea6121a | 11419 | dyn.d_un.d_val -= s->size; |
6348e046 AM |
11420 | break; |
11421 | ||
11422 | case DT_RELA: | |
11423 | /* We may not be using the standard ELF linker script. | |
11424 | If .rela.plt is the first .rela section, we adjust | |
11425 | DT_RELA to not include it. */ | |
4ce794b7 | 11426 | s = htab->relplt; |
6348e046 AM |
11427 | if (s == NULL) |
11428 | continue; | |
11429 | if (dyn.d_un.d_ptr != s->output_section->vma + s->output_offset) | |
11430 | continue; | |
eea6121a | 11431 | dyn.d_un.d_ptr += s->size; |
65f38f15 | 11432 | break; |
5bd4f169 | 11433 | } |
5bd4f169 | 11434 | |
65f38f15 | 11435 | bfd_elf64_swap_dyn_out (output_bfd, &dyn, dyncon); |
5bd4f169 | 11436 | } |
5bd4f169 AM |
11437 | } |
11438 | ||
eea6121a | 11439 | if (htab->got != NULL && htab->got->size != 0) |
5d1634d7 AM |
11440 | { |
11441 | /* Fill in the first entry in the global offset table. | |
11442 | We use it to hold the link-time TOCbase. */ | |
11443 | bfd_put_64 (output_bfd, | |
60ee0d4a | 11444 | elf_gp (output_bfd) + TOC_BASE_OFF, |
4ce794b7 | 11445 | htab->got->contents); |
5d1634d7 AM |
11446 | |
11447 | /* Set .got entry size. */ | |
4ce794b7 | 11448 | elf_section_data (htab->got->output_section)->this_hdr.sh_entsize = 8; |
5d1634d7 AM |
11449 | } |
11450 | ||
eea6121a | 11451 | if (htab->plt != NULL && htab->plt->size != 0) |
5d1634d7 AM |
11452 | { |
11453 | /* Set .plt entry size. */ | |
4ce794b7 | 11454 | elf_section_data (htab->plt->output_section)->this_hdr.sh_entsize |
5d1634d7 AM |
11455 | = PLT_ENTRY_SIZE; |
11456 | } | |
11457 | ||
84f5d08e AM |
11458 | /* brlt is SEC_LINKER_CREATED, so we need to write out relocs for |
11459 | brlt ourselves if emitrelocations. */ | |
11460 | if (htab->brlt != NULL | |
11461 | && htab->brlt->reloc_count != 0 | |
11462 | && !_bfd_elf_link_output_relocs (output_bfd, | |
11463 | htab->brlt, | |
11464 | &elf_section_data (htab->brlt)->rel_hdr, | |
11465 | elf_section_data (htab->brlt)->relocs, | |
11466 | NULL)) | |
11467 | return FALSE; | |
11468 | ||
e717da7e | 11469 | /* We need to handle writing out multiple GOT sections ourselves, |
7b53ace3 AM |
11470 | since we didn't add them to DYNOBJ. We know dynobj is the first |
11471 | bfd. */ | |
e717da7e AM |
11472 | while ((dynobj = dynobj->link_next) != NULL) |
11473 | { | |
11474 | asection *s; | |
7b53ace3 | 11475 | |
ee75fd95 | 11476 | if (!is_ppc64_elf_target (dynobj->xvec)) |
7b53ace3 AM |
11477 | continue; |
11478 | ||
e717da7e AM |
11479 | s = ppc64_elf_tdata (dynobj)->got; |
11480 | if (s != NULL | |
eea6121a | 11481 | && s->size != 0 |
e717da7e AM |
11482 | && s->output_section != bfd_abs_section_ptr |
11483 | && !bfd_set_section_contents (output_bfd, s->output_section, | |
11484 | s->contents, s->output_offset, | |
eea6121a | 11485 | s->size)) |
e717da7e AM |
11486 | return FALSE; |
11487 | s = ppc64_elf_tdata (dynobj)->relgot; | |
11488 | if (s != NULL | |
eea6121a | 11489 | && s->size != 0 |
e717da7e AM |
11490 | && s->output_section != bfd_abs_section_ptr |
11491 | && !bfd_set_section_contents (output_bfd, s->output_section, | |
11492 | s->contents, s->output_offset, | |
eea6121a | 11493 | s->size)) |
e717da7e AM |
11494 | return FALSE; |
11495 | } | |
f6c52c13 | 11496 | |
b34976b6 | 11497 | return TRUE; |
5bd4f169 AM |
11498 | } |
11499 | ||
5bd4f169 | 11500 | #include "elf64-target.h" |