Commit | Line | Data |
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8d88c4ca | 1 | /* X86-64 specific support for 64-bit ELF |
c434dee6 | 2 | Copyright 2000, 2001, 2002 Free Software Foundation, Inc. |
8d88c4ca NC |
3 | Contributed by Jan Hubicka <jh@suse.cz>. |
4 | ||
5 | This file is part of BFD, the Binary File Descriptor library. | |
6 | ||
7 | This program is free software; you can redistribute it and/or modify | |
8 | it under the terms of the GNU General Public License as published by | |
9 | the Free Software Foundation; either version 2 of the License, or | |
10 | (at your option) any later version. | |
11 | ||
12 | This program is distributed in the hope that it will be useful, | |
13 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | GNU General Public License for more details. | |
16 | ||
17 | You should have received a copy of the GNU General Public License | |
18 | along with this program; if not, write to the Free Software | |
19 | Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ | |
20 | ||
21 | #include "bfd.h" | |
22 | #include "sysdep.h" | |
c434dee6 | 23 | #include "bfdlink.h" |
8d88c4ca NC |
24 | #include "libbfd.h" |
25 | #include "elf-bfd.h" | |
26 | ||
27 | #include "elf/x86-64.h" | |
28 | ||
29 | /* We use only the RELA entries. */ | |
c434dee6 | 30 | #define USE_RELA 1 |
8d88c4ca NC |
31 | |
32 | /* In case we're on a 32-bit machine, construct a 64-bit "-1" value. */ | |
33 | #define MINUS_ONE (~ (bfd_vma) 0) | |
34 | ||
35 | /* The relocation "howto" table. Order of fields: | |
407443a3 AJ |
36 | type, size, bitsize, pc_relative, complain_on_overflow, |
37 | special_function, name, partial_inplace, src_mask, dst_pack, pcrel_offset. */ | |
70256ad8 AJ |
38 | static reloc_howto_type x86_64_elf_howto_table[] = |
39 | { | |
407443a3 | 40 | HOWTO(R_X86_64_NONE, 0, 0, 0, false, 0, complain_overflow_dont, |
fe4770f4 AJ |
41 | bfd_elf_generic_reloc, "R_X86_64_NONE", false, 0x00000000, 0x00000000, |
42 | false), | |
407443a3 | 43 | HOWTO(R_X86_64_64, 0, 4, 64, false, 0, complain_overflow_bitfield, |
fe4770f4 AJ |
44 | bfd_elf_generic_reloc, "R_X86_64_64", false, MINUS_ONE, MINUS_ONE, |
45 | false), | |
407443a3 | 46 | HOWTO(R_X86_64_PC32, 0, 4, 32, true, 0, complain_overflow_signed, |
fe4770f4 AJ |
47 | bfd_elf_generic_reloc, "R_X86_64_PC32", false, 0xffffffff, 0xffffffff, |
48 | true), | |
407443a3 | 49 | HOWTO(R_X86_64_GOT32, 0, 4, 32, false, 0, complain_overflow_signed, |
fe4770f4 AJ |
50 | bfd_elf_generic_reloc, "R_X86_64_GOT32", false, 0xffffffff, 0xffffffff, |
51 | false), | |
407443a3 | 52 | HOWTO(R_X86_64_PLT32, 0, 4, 32, true, 0, complain_overflow_signed, |
fe4770f4 AJ |
53 | bfd_elf_generic_reloc, "R_X86_64_PLT32", false, 0xffffffff, 0xffffffff, |
54 | true), | |
407443a3 | 55 | HOWTO(R_X86_64_COPY, 0, 4, 32, false, 0, complain_overflow_bitfield, |
fe4770f4 AJ |
56 | bfd_elf_generic_reloc, "R_X86_64_COPY", false, 0xffffffff, 0xffffffff, |
57 | false), | |
407443a3 | 58 | HOWTO(R_X86_64_GLOB_DAT, 0, 4, 64, false, 0, complain_overflow_bitfield, |
fe4770f4 AJ |
59 | bfd_elf_generic_reloc, "R_X86_64_GLOB_DAT", false, MINUS_ONE, |
60 | MINUS_ONE, false), | |
407443a3 | 61 | HOWTO(R_X86_64_JUMP_SLOT, 0, 4, 64, false, 0, complain_overflow_bitfield, |
fe4770f4 AJ |
62 | bfd_elf_generic_reloc, "R_X86_64_JUMP_SLOT", false, MINUS_ONE, |
63 | MINUS_ONE, false), | |
4a73f21b | 64 | HOWTO(R_X86_64_RELATIVE, 0, 4, 64, false, 0, complain_overflow_bitfield, |
fe4770f4 AJ |
65 | bfd_elf_generic_reloc, "R_X86_64_RELATIVE", false, MINUS_ONE, |
66 | MINUS_ONE, false), | |
407443a3 | 67 | HOWTO(R_X86_64_GOTPCREL, 0, 4, 32, true,0 , complain_overflow_signed, |
fe4770f4 AJ |
68 | bfd_elf_generic_reloc, "R_X86_64_GOTPCREL", false, 0xffffffff, |
69 | 0xffffffff, true), | |
407443a3 | 70 | HOWTO(R_X86_64_32, 0, 4, 32, false, 0, complain_overflow_unsigned, |
fe4770f4 AJ |
71 | bfd_elf_generic_reloc, "R_X86_64_32", false, 0xffffffff, 0xffffffff, |
72 | false), | |
407443a3 | 73 | HOWTO(R_X86_64_32S, 0, 4, 32, false, 0, complain_overflow_signed, |
fe4770f4 AJ |
74 | bfd_elf_generic_reloc, "R_X86_64_32S", false, 0xffffffff, 0xffffffff, |
75 | false), | |
407443a3 AJ |
76 | HOWTO(R_X86_64_16, 0, 1, 16, false, 0, complain_overflow_bitfield, |
77 | bfd_elf_generic_reloc, "R_X86_64_16", false, 0xffff, 0xffff, false), | |
78 | HOWTO(R_X86_64_PC16,0, 1, 16, true, 0, complain_overflow_bitfield, | |
79 | bfd_elf_generic_reloc, "R_X86_64_PC16", false, 0xffff, 0xffff, true), | |
80 | HOWTO(R_X86_64_8, 0, 0, 8, false, 0, complain_overflow_signed, | |
81 | bfd_elf_generic_reloc, "R_X86_64_8", false, 0xff, 0xff, false), | |
82 | HOWTO(R_X86_64_PC8, 0, 0, 8, true, 0, complain_overflow_signed, | |
fe4770f4 AJ |
83 | bfd_elf_generic_reloc, "R_X86_64_PC8", false, 0xff, 0xff, true), |
84 | ||
85 | /* GNU extension to record C++ vtable hierarchy. */ | |
86 | HOWTO (R_X86_64_GNU_VTINHERIT, 0, 4, 0, false, 0, complain_overflow_dont, | |
87 | NULL, "R_X86_64_GNU_VTINHERIT", false, 0, 0, false), | |
88 | ||
89 | /* GNU extension to record C++ vtable member usage. */ | |
90 | HOWTO (R_X86_64_GNU_VTENTRY, 0, 4, 0, false, 0, complain_overflow_dont, | |
91 | _bfd_elf_rel_vtable_reloc_fn, "R_X86_64_GNU_VTENTRY", false, 0, 0, | |
92 | false) | |
8d88c4ca NC |
93 | }; |
94 | ||
95 | /* Map BFD relocs to the x86_64 elf relocs. */ | |
70256ad8 AJ |
96 | struct elf_reloc_map |
97 | { | |
8d88c4ca NC |
98 | bfd_reloc_code_real_type bfd_reloc_val; |
99 | unsigned char elf_reloc_val; | |
100 | }; | |
101 | ||
dc810e39 | 102 | static const struct elf_reloc_map x86_64_reloc_map[] = |
8d88c4ca | 103 | { |
70256ad8 AJ |
104 | { BFD_RELOC_NONE, R_X86_64_NONE, }, |
105 | { BFD_RELOC_64, R_X86_64_64, }, | |
106 | { BFD_RELOC_32_PCREL, R_X86_64_PC32, }, | |
107 | { BFD_RELOC_X86_64_GOT32, R_X86_64_GOT32,}, | |
108 | { BFD_RELOC_X86_64_PLT32, R_X86_64_PLT32,}, | |
109 | { BFD_RELOC_X86_64_COPY, R_X86_64_COPY, }, | |
110 | { BFD_RELOC_X86_64_GLOB_DAT, R_X86_64_GLOB_DAT, }, | |
111 | { BFD_RELOC_X86_64_JUMP_SLOT, R_X86_64_JUMP_SLOT, }, | |
112 | { BFD_RELOC_X86_64_RELATIVE, R_X86_64_RELATIVE, }, | |
113 | { BFD_RELOC_X86_64_GOTPCREL, R_X86_64_GOTPCREL, }, | |
114 | { BFD_RELOC_32, R_X86_64_32, }, | |
115 | { BFD_RELOC_X86_64_32S, R_X86_64_32S, }, | |
116 | { BFD_RELOC_16, R_X86_64_16, }, | |
117 | { BFD_RELOC_16_PCREL, R_X86_64_PC16, }, | |
118 | { BFD_RELOC_8, R_X86_64_8, }, | |
119 | { BFD_RELOC_8_PCREL, R_X86_64_PC8, }, | |
fe4770f4 AJ |
120 | { BFD_RELOC_VTABLE_INHERIT, R_X86_64_GNU_VTINHERIT, }, |
121 | { BFD_RELOC_VTABLE_ENTRY, R_X86_64_GNU_VTENTRY, }, | |
8d88c4ca NC |
122 | }; |
123 | ||
8d88c4ca NC |
124 | static reloc_howto_type *elf64_x86_64_reloc_type_lookup |
125 | PARAMS ((bfd *, bfd_reloc_code_real_type)); | |
126 | static void elf64_x86_64_info_to_howto | |
127 | PARAMS ((bfd *, arelent *, Elf64_Internal_Rela *)); | |
cedb70c5 | 128 | static boolean elf64_x86_64_grok_prstatus |
3bab7989 | 129 | PARAMS ((bfd *, Elf_Internal_Note *)); |
cedb70c5 | 130 | static boolean elf64_x86_64_grok_psinfo |
3bab7989 | 131 | PARAMS ((bfd *, Elf_Internal_Note *)); |
8d88c4ca NC |
132 | static struct bfd_link_hash_table *elf64_x86_64_link_hash_table_create |
133 | PARAMS ((bfd *)); | |
1e1b3bc2 | 134 | static boolean elf64_x86_64_elf_object_p PARAMS ((bfd *abfd)); |
c434dee6 AJ |
135 | static boolean create_got_section |
136 | PARAMS((bfd *, struct bfd_link_info *)); | |
137 | static boolean elf64_x86_64_create_dynamic_sections | |
138 | PARAMS((bfd *, struct bfd_link_info *)); | |
139 | static void elf64_x86_64_copy_indirect_symbol | |
140 | PARAMS ((struct elf_link_hash_entry *, struct elf_link_hash_entry *)); | |
1e1b3bc2 AJ |
141 | static boolean elf64_x86_64_check_relocs |
142 | PARAMS ((bfd *, struct bfd_link_info *, asection *sec, | |
143 | const Elf_Internal_Rela *)); | |
144 | static asection *elf64_x86_64_gc_mark_hook | |
1e2f5b6e | 145 | PARAMS ((asection *, struct bfd_link_info *, Elf_Internal_Rela *, |
1e1b3bc2 AJ |
146 | struct elf_link_hash_entry *, Elf_Internal_Sym *)); |
147 | ||
148 | static boolean elf64_x86_64_gc_sweep_hook | |
149 | PARAMS ((bfd *, struct bfd_link_info *, asection *, | |
150 | const Elf_Internal_Rela *)); | |
70256ad8 | 151 | |
c434dee6 | 152 | static struct bfd_hash_entry *link_hash_newfunc |
70256ad8 AJ |
153 | PARAMS ((struct bfd_hash_entry *, struct bfd_hash_table *, const char *)); |
154 | static boolean elf64_x86_64_adjust_dynamic_symbol | |
155 | PARAMS ((struct bfd_link_info *, struct elf_link_hash_entry *)); | |
156 | ||
c434dee6 AJ |
157 | static boolean allocate_dynrelocs |
158 | PARAMS ((struct elf_link_hash_entry *, PTR)); | |
159 | static boolean readonly_dynrelocs | |
160 | PARAMS ((struct elf_link_hash_entry *, PTR)); | |
70256ad8 AJ |
161 | static boolean elf64_x86_64_size_dynamic_sections |
162 | PARAMS ((bfd *, struct bfd_link_info *)); | |
8d88c4ca NC |
163 | static boolean elf64_x86_64_relocate_section |
164 | PARAMS ((bfd *, struct bfd_link_info *, bfd *, asection *, bfd_byte *, | |
407443a3 | 165 | Elf_Internal_Rela *, Elf_Internal_Sym *, asection **)); |
70256ad8 AJ |
166 | static boolean elf64_x86_64_finish_dynamic_symbol |
167 | PARAMS ((bfd *, struct bfd_link_info *, struct elf_link_hash_entry *, | |
168 | Elf_Internal_Sym *sym)); | |
169 | static boolean elf64_x86_64_finish_dynamic_sections | |
170 | PARAMS ((bfd *, struct bfd_link_info *)); | |
f51e552e AM |
171 | static enum elf_reloc_type_class elf64_x86_64_reloc_type_class |
172 | PARAMS ((const Elf_Internal_Rela *)); | |
8d88c4ca NC |
173 | |
174 | /* Given a BFD reloc type, return a HOWTO structure. */ | |
175 | static reloc_howto_type * | |
176 | elf64_x86_64_reloc_type_lookup (abfd, code) | |
177 | bfd *abfd ATTRIBUTE_UNUSED; | |
178 | bfd_reloc_code_real_type code; | |
179 | { | |
180 | unsigned int i; | |
181 | for (i = 0; i < sizeof (x86_64_reloc_map) / sizeof (struct elf_reloc_map); | |
182 | i++) | |
183 | { | |
184 | if (x86_64_reloc_map[i].bfd_reloc_val == code) | |
ffaef159 | 185 | return &x86_64_elf_howto_table[i]; |
8d88c4ca NC |
186 | } |
187 | return 0; | |
188 | } | |
189 | ||
8d88c4ca | 190 | /* Given an x86_64 ELF reloc type, fill in an arelent structure. */ |
8da6118f | 191 | |
8d88c4ca NC |
192 | static void |
193 | elf64_x86_64_info_to_howto (abfd, cache_ptr, dst) | |
194 | bfd *abfd ATTRIBUTE_UNUSED; | |
195 | arelent *cache_ptr; | |
196 | Elf64_Internal_Rela *dst; | |
197 | { | |
fe4770f4 | 198 | unsigned r_type, i; |
8d88c4ca NC |
199 | |
200 | r_type = ELF64_R_TYPE (dst->r_info); | |
fe4770f4 AJ |
201 | if (r_type < (unsigned int) R_X86_64_GNU_VTINHERIT) |
202 | { | |
203 | BFD_ASSERT (r_type <= (unsigned int) R_X86_64_PC8); | |
204 | i = r_type; | |
205 | } | |
206 | else | |
207 | { | |
208 | BFD_ASSERT (r_type < (unsigned int) R_X86_64_max); | |
209 | i = r_type - ((unsigned int) R_X86_64_GNU_VTINHERIT - R_X86_64_PC8 - 1); | |
210 | } | |
211 | cache_ptr->howto = &x86_64_elf_howto_table[i]; | |
8d88c4ca NC |
212 | BFD_ASSERT (r_type == cache_ptr->howto->type); |
213 | } | |
70256ad8 | 214 | \f |
3bab7989 ML |
215 | /* Support for core dump NOTE sections. */ |
216 | static boolean | |
217 | elf64_x86_64_grok_prstatus (abfd, note) | |
218 | bfd *abfd; | |
219 | Elf_Internal_Note *note; | |
220 | { | |
221 | int offset; | |
222 | size_t raw_size; | |
223 | ||
224 | switch (note->descsz) | |
225 | { | |
226 | default: | |
227 | return false; | |
228 | ||
229 | case 336: /* sizeof(istruct elf_prstatus) on Linux/x86_64 */ | |
230 | /* pr_cursig */ | |
cedb70c5 | 231 | elf_tdata (abfd)->core_signal |
3bab7989 ML |
232 | = bfd_get_16 (abfd, note->descdata + 12); |
233 | ||
234 | /* pr_pid */ | |
cedb70c5 | 235 | elf_tdata (abfd)->core_pid |
3bab7989 ML |
236 | = bfd_get_32 (abfd, note->descdata + 32); |
237 | ||
238 | /* pr_reg */ | |
239 | offset = 112; | |
240 | raw_size = 216; | |
241 | ||
242 | break; | |
243 | } | |
244 | ||
245 | /* Make a ".reg/999" section. */ | |
246 | return _bfd_elfcore_make_pseudosection (abfd, ".reg", | |
247 | raw_size, note->descpos + offset); | |
248 | } | |
249 | ||
250 | static boolean | |
251 | elf64_x86_64_grok_psinfo (abfd, note) | |
252 | bfd *abfd; | |
253 | Elf_Internal_Note *note; | |
254 | { | |
255 | switch (note->descsz) | |
256 | { | |
257 | default: | |
258 | return false; | |
259 | ||
260 | case 136: /* sizeof(struct elf_prpsinfo) on Linux/x86_64 */ | |
261 | elf_tdata (abfd)->core_program | |
262 | = _bfd_elfcore_strndup (abfd, note->descdata + 40, 16); | |
263 | elf_tdata (abfd)->core_command | |
264 | = _bfd_elfcore_strndup (abfd, note->descdata + 56, 80); | |
265 | } | |
266 | ||
267 | /* Note that for some reason, a spurious space is tacked | |
268 | onto the end of the args in some (at least one anyway) | |
269 | implementations, so strip it off if it exists. */ | |
270 | ||
271 | { | |
272 | char *command = elf_tdata (abfd)->core_command; | |
273 | int n = strlen (command); | |
274 | ||
275 | if (0 < n && command[n - 1] == ' ') | |
276 | command[n - 1] = '\0'; | |
277 | } | |
278 | ||
279 | return true; | |
280 | } | |
281 | \f | |
407443a3 | 282 | /* Functions for the x86-64 ELF linker. */ |
70256ad8 | 283 | |
407443a3 | 284 | /* The name of the dynamic interpreter. This is put in the .interp |
70256ad8 AJ |
285 | section. */ |
286 | ||
407443a3 | 287 | #define ELF_DYNAMIC_INTERPRETER "/lib/ld64.so.1" |
70256ad8 AJ |
288 | |
289 | /* The size in bytes of an entry in the global offset table. */ | |
290 | ||
291 | #define GOT_ENTRY_SIZE 8 | |
8d88c4ca | 292 | |
70256ad8 | 293 | /* The size in bytes of an entry in the procedure linkage table. */ |
8d88c4ca | 294 | |
70256ad8 AJ |
295 | #define PLT_ENTRY_SIZE 16 |
296 | ||
297 | /* The first entry in a procedure linkage table looks like this. See the | |
298 | SVR4 ABI i386 supplement and the x86-64 ABI to see how this works. */ | |
299 | ||
300 | static const bfd_byte elf64_x86_64_plt0_entry[PLT_ENTRY_SIZE] = | |
301 | { | |
653165cc AJ |
302 | 0xff, 0x35, 8, 0, 0, 0, /* pushq GOT+8(%rip) */ |
303 | 0xff, 0x25, 16, 0, 0, 0, /* jmpq *GOT+16(%rip) */ | |
304 | 0x90, 0x90, 0x90, 0x90 /* pad out to 16 bytes with nops. */ | |
70256ad8 AJ |
305 | }; |
306 | ||
307 | /* Subsequent entries in a procedure linkage table look like this. */ | |
308 | ||
309 | static const bfd_byte elf64_x86_64_plt_entry[PLT_ENTRY_SIZE] = | |
310 | { | |
653165cc | 311 | 0xff, 0x25, /* jmpq *name@GOTPC(%rip) */ |
407443a3 | 312 | 0, 0, 0, 0, /* replaced with offset to this symbol in .got. */ |
653165cc | 313 | 0x68, /* pushq immediate */ |
70256ad8 AJ |
314 | 0, 0, 0, 0, /* replaced with index into relocation table. */ |
315 | 0xe9, /* jmp relative */ | |
316 | 0, 0, 0, 0 /* replaced with offset to start of .plt0. */ | |
317 | }; | |
318 | ||
319 | /* The x86-64 linker needs to keep track of the number of relocs that | |
985142a4 | 320 | it decides to copy as dynamic relocs in check_relocs for each symbol. |
c434dee6 AJ |
321 | This is so that it can later discard them if they are found to be |
322 | unnecessary. We store the information in a field extending the | |
323 | regular ELF linker hash table. */ | |
70256ad8 | 324 | |
c434dee6 | 325 | struct elf64_x86_64_dyn_relocs |
70256ad8 AJ |
326 | { |
327 | /* Next section. */ | |
c434dee6 AJ |
328 | struct elf64_x86_64_dyn_relocs *next; |
329 | ||
330 | /* The input section of the reloc. */ | |
331 | asection *sec; | |
332 | ||
333 | /* Total number of relocs copied for the input section. */ | |
70256ad8 | 334 | bfd_size_type count; |
c434dee6 AJ |
335 | |
336 | /* Number of pc-relative relocs copied for the input section. */ | |
337 | bfd_size_type pc_count; | |
70256ad8 AJ |
338 | }; |
339 | ||
340 | /* x86-64 ELF linker hash entry. */ | |
341 | ||
342 | struct elf64_x86_64_link_hash_entry | |
343 | { | |
c434dee6 | 344 | struct elf_link_hash_entry elf; |
70256ad8 | 345 | |
c434dee6 AJ |
346 | /* Track dynamic relocs copied for this symbol. */ |
347 | struct elf64_x86_64_dyn_relocs *dyn_relocs; | |
70256ad8 AJ |
348 | }; |
349 | ||
c434dee6 | 350 | /* x86-64 ELF linker hash table. */ |
8d88c4ca | 351 | |
407443a3 AJ |
352 | struct elf64_x86_64_link_hash_table |
353 | { | |
c434dee6 | 354 | struct elf_link_hash_table elf; |
70256ad8 | 355 | |
c434dee6 AJ |
356 | /* Short-cuts to get to dynamic linker sections. */ |
357 | asection *sgot; | |
358 | asection *sgotplt; | |
359 | asection *srelgot; | |
360 | asection *splt; | |
361 | asection *srelplt; | |
362 | asection *sdynbss; | |
363 | asection *srelbss; | |
70256ad8 | 364 | |
c434dee6 AJ |
365 | /* Small local sym to section mapping cache. */ |
366 | struct sym_sec_cache sym_sec; | |
367 | }; | |
70256ad8 AJ |
368 | |
369 | /* Get the x86-64 ELF linker hash table from a link_info structure. */ | |
8d88c4ca NC |
370 | |
371 | #define elf64_x86_64_hash_table(p) \ | |
372 | ((struct elf64_x86_64_link_hash_table *) ((p)->hash)) | |
373 | ||
407443a3 | 374 | /* Create an entry in an x86-64 ELF linker hash table. */ |
70256ad8 AJ |
375 | |
376 | static struct bfd_hash_entry * | |
c434dee6 | 377 | link_hash_newfunc (entry, table, string) |
70256ad8 AJ |
378 | struct bfd_hash_entry *entry; |
379 | struct bfd_hash_table *table; | |
380 | const char *string; | |
381 | { | |
70256ad8 | 382 | /* Allocate the structure if it has not already been allocated by a |
c434dee6 AJ |
383 | subclass. */ |
384 | if (entry == NULL) | |
385 | { | |
386 | entry = bfd_hash_allocate (table, | |
387 | sizeof (struct elf64_x86_64_link_hash_entry)); | |
388 | if (entry == NULL) | |
389 | return entry; | |
390 | } | |
70256ad8 AJ |
391 | |
392 | /* Call the allocation method of the superclass. */ | |
c434dee6 AJ |
393 | entry = _bfd_elf_link_hash_newfunc (entry, table, string); |
394 | if (entry != NULL) | |
70256ad8 | 395 | { |
c434dee6 AJ |
396 | struct elf64_x86_64_link_hash_entry *eh; |
397 | ||
398 | eh = (struct elf64_x86_64_link_hash_entry *) entry; | |
399 | eh->dyn_relocs = NULL; | |
70256ad8 AJ |
400 | } |
401 | ||
c434dee6 | 402 | return entry; |
70256ad8 AJ |
403 | } |
404 | ||
8d88c4ca NC |
405 | /* Create an X86-64 ELF linker hash table. */ |
406 | ||
407 | static struct bfd_link_hash_table * | |
408 | elf64_x86_64_link_hash_table_create (abfd) | |
409 | bfd *abfd; | |
410 | { | |
411 | struct elf64_x86_64_link_hash_table *ret; | |
dc810e39 | 412 | bfd_size_type amt = sizeof (struct elf64_x86_64_link_hash_table); |
8d88c4ca | 413 | |
e2d34d7d | 414 | ret = (struct elf64_x86_64_link_hash_table *) bfd_malloc (amt); |
c434dee6 | 415 | if (ret == NULL) |
8d88c4ca NC |
416 | return NULL; |
417 | ||
c434dee6 | 418 | if (! _bfd_elf_link_hash_table_init (&ret->elf, abfd, link_hash_newfunc)) |
8d88c4ca | 419 | { |
e2d34d7d | 420 | free (ret); |
8d88c4ca NC |
421 | return NULL; |
422 | } | |
423 | ||
c434dee6 AJ |
424 | ret->sgot = NULL; |
425 | ret->sgotplt = NULL; | |
426 | ret->srelgot = NULL; | |
427 | ret->splt = NULL; | |
428 | ret->srelplt = NULL; | |
429 | ret->sdynbss = NULL; | |
430 | ret->srelbss = NULL; | |
431 | ret->sym_sec.abfd = NULL; | |
432 | ||
433 | return &ret->elf.root; | |
434 | } | |
435 | ||
436 | /* Create .got, .gotplt, and .rela.got sections in DYNOBJ, and set up | |
437 | shortcuts to them in our hash table. */ | |
438 | ||
439 | static boolean | |
440 | create_got_section (dynobj, info) | |
441 | bfd *dynobj; | |
442 | struct bfd_link_info *info; | |
443 | { | |
444 | struct elf64_x86_64_link_hash_table *htab; | |
445 | ||
446 | if (! _bfd_elf_create_got_section (dynobj, info)) | |
447 | return false; | |
448 | ||
449 | htab = elf64_x86_64_hash_table (info); | |
450 | htab->sgot = bfd_get_section_by_name (dynobj, ".got"); | |
451 | htab->sgotplt = bfd_get_section_by_name (dynobj, ".got.plt"); | |
452 | if (!htab->sgot || !htab->sgotplt) | |
453 | abort (); | |
454 | ||
455 | htab->srelgot = bfd_make_section (dynobj, ".rela.got"); | |
456 | if (htab->srelgot == NULL | |
457 | || ! bfd_set_section_flags (dynobj, htab->srelgot, | |
458 | (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | |
459 | | SEC_IN_MEMORY | SEC_LINKER_CREATED | |
460 | | SEC_READONLY)) | |
461 | || ! bfd_set_section_alignment (dynobj, htab->srelgot, 3)) | |
462 | return false; | |
463 | return true; | |
464 | } | |
465 | ||
466 | /* Create .plt, .rela.plt, .got, .got.plt, .rela.got, .dynbss, and | |
467 | .rela.bss sections in DYNOBJ, and set up shortcuts to them in our | |
468 | hash table. */ | |
469 | ||
470 | static boolean | |
471 | elf64_x86_64_create_dynamic_sections (dynobj, info) | |
472 | bfd *dynobj; | |
473 | struct bfd_link_info *info; | |
474 | { | |
475 | struct elf64_x86_64_link_hash_table *htab; | |
476 | ||
477 | htab = elf64_x86_64_hash_table (info); | |
478 | if (!htab->sgot && !create_got_section (dynobj, info)) | |
479 | return false; | |
480 | ||
481 | if (!_bfd_elf_create_dynamic_sections (dynobj, info)) | |
482 | return false; | |
483 | ||
484 | htab->splt = bfd_get_section_by_name (dynobj, ".plt"); | |
485 | htab->srelplt = bfd_get_section_by_name (dynobj, ".rela.plt"); | |
486 | htab->sdynbss = bfd_get_section_by_name (dynobj, ".dynbss"); | |
487 | if (!info->shared) | |
488 | htab->srelbss = bfd_get_section_by_name (dynobj, ".rela.bss"); | |
489 | ||
490 | if (!htab->splt || !htab->srelplt || !htab->sdynbss | |
491 | || (!info->shared && !htab->srelbss)) | |
492 | abort (); | |
493 | ||
494 | return true; | |
495 | } | |
496 | ||
497 | /* Copy the extra info we tack onto an elf_link_hash_entry. */ | |
498 | ||
499 | static void | |
500 | elf64_x86_64_copy_indirect_symbol (dir, ind) | |
501 | struct elf_link_hash_entry *dir, *ind; | |
502 | { | |
503 | struct elf64_x86_64_link_hash_entry *edir, *eind; | |
504 | ||
505 | edir = (struct elf64_x86_64_link_hash_entry *) dir; | |
506 | eind = (struct elf64_x86_64_link_hash_entry *) ind; | |
507 | ||
508 | if (eind->dyn_relocs != NULL) | |
509 | { | |
510 | if (edir->dyn_relocs != NULL) | |
511 | { | |
512 | struct elf64_x86_64_dyn_relocs **pp; | |
513 | struct elf64_x86_64_dyn_relocs *p; | |
514 | ||
515 | if (ind->root.type == bfd_link_hash_indirect) | |
516 | abort (); | |
517 | ||
518 | /* Add reloc counts against the weak sym to the strong sym | |
519 | list. Merge any entries against the same section. */ | |
520 | for (pp = &eind->dyn_relocs; (p = *pp) != NULL; ) | |
521 | { | |
522 | struct elf64_x86_64_dyn_relocs *q; | |
523 | ||
524 | for (q = edir->dyn_relocs; q != NULL; q = q->next) | |
525 | if (q->sec == p->sec) | |
526 | { | |
527 | q->pc_count += p->pc_count; | |
528 | q->count += p->count; | |
529 | *pp = p->next; | |
530 | break; | |
531 | } | |
532 | if (q == NULL) | |
533 | pp = &p->next; | |
534 | } | |
535 | *pp = edir->dyn_relocs; | |
536 | } | |
537 | ||
538 | edir->dyn_relocs = eind->dyn_relocs; | |
539 | eind->dyn_relocs = NULL; | |
540 | } | |
541 | ||
542 | _bfd_elf_link_hash_copy_indirect (dir, ind); | |
8d88c4ca NC |
543 | } |
544 | ||
1e1b3bc2 | 545 | static boolean |
8d88c4ca NC |
546 | elf64_x86_64_elf_object_p (abfd) |
547 | bfd *abfd; | |
548 | { | |
549 | /* Set the right machine number for an x86-64 elf64 file. */ | |
550 | bfd_default_set_arch_mach (abfd, bfd_arch_i386, bfd_mach_x86_64); | |
551 | return true; | |
552 | } | |
553 | ||
70256ad8 | 554 | /* Look through the relocs for a section during the first phase, and |
c434dee6 AJ |
555 | calculate needed space in the global offset table, procedure |
556 | linkage table, and dynamic reloc sections. */ | |
70256ad8 AJ |
557 | |
558 | static boolean | |
559 | elf64_x86_64_check_relocs (abfd, info, sec, relocs) | |
560 | bfd *abfd; | |
561 | struct bfd_link_info *info; | |
562 | asection *sec; | |
563 | const Elf_Internal_Rela *relocs; | |
564 | { | |
c434dee6 | 565 | struct elf64_x86_64_link_hash_table *htab; |
70256ad8 AJ |
566 | Elf_Internal_Shdr *symtab_hdr; |
567 | struct elf_link_hash_entry **sym_hashes; | |
70256ad8 AJ |
568 | const Elf_Internal_Rela *rel; |
569 | const Elf_Internal_Rela *rel_end; | |
70256ad8 AJ |
570 | asection *sreloc; |
571 | ||
572 | if (info->relocateable) | |
573 | return true; | |
574 | ||
c434dee6 | 575 | htab = elf64_x86_64_hash_table (info); |
70256ad8 AJ |
576 | symtab_hdr = &elf_tdata (abfd)->symtab_hdr; |
577 | sym_hashes = elf_sym_hashes (abfd); | |
70256ad8 | 578 | |
c434dee6 AJ |
579 | sreloc = NULL; |
580 | ||
70256ad8 AJ |
581 | rel_end = relocs + sec->reloc_count; |
582 | for (rel = relocs; rel < rel_end; rel++) | |
583 | { | |
584 | unsigned long r_symndx; | |
585 | struct elf_link_hash_entry *h; | |
586 | ||
587 | r_symndx = ELF64_R_SYM (rel->r_info); | |
c434dee6 AJ |
588 | |
589 | if (r_symndx >= NUM_SHDR_ENTRIES (symtab_hdr)) | |
590 | { | |
591 | (*_bfd_error_handler) (_("%s: bad symbol index: %d"), | |
592 | bfd_archive_filename (abfd), | |
593 | r_symndx); | |
594 | return false; | |
595 | } | |
596 | ||
70256ad8 AJ |
597 | if (r_symndx < symtab_hdr->sh_info) |
598 | h = NULL; | |
599 | else | |
600 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; | |
601 | ||
70256ad8 AJ |
602 | switch (ELF64_R_TYPE (rel->r_info)) |
603 | { | |
604 | case R_X86_64_GOT32: | |
c434dee6 | 605 | case R_X86_64_GOTPCREL: |
407443a3 | 606 | /* This symbol requires a global offset table entry. */ |
70256ad8 AJ |
607 | if (h != NULL) |
608 | { | |
51b64d56 | 609 | h->got.refcount += 1; |
70256ad8 AJ |
610 | } |
611 | else | |
612 | { | |
c434dee6 AJ |
613 | bfd_signed_vma *local_got_refcounts; |
614 | ||
70256ad8 | 615 | /* This is a global offset table entry for a local symbol. */ |
c434dee6 | 616 | local_got_refcounts = elf_local_got_refcounts (abfd); |
70256ad8 AJ |
617 | if (local_got_refcounts == NULL) |
618 | { | |
dc810e39 | 619 | bfd_size_type size; |
70256ad8 | 620 | |
dc810e39 AM |
621 | size = symtab_hdr->sh_info; |
622 | size *= sizeof (bfd_signed_vma); | |
70256ad8 | 623 | local_got_refcounts = ((bfd_signed_vma *) |
51b64d56 | 624 | bfd_zalloc (abfd, size)); |
70256ad8 AJ |
625 | if (local_got_refcounts == NULL) |
626 | return false; | |
627 | elf_local_got_refcounts (abfd) = local_got_refcounts; | |
70256ad8 | 628 | } |
51b64d56 | 629 | local_got_refcounts[r_symndx] += 1; |
70256ad8 | 630 | } |
c434dee6 AJ |
631 | /* Fall through */ |
632 | ||
633 | //case R_X86_64_GOTPCREL: | |
634 | if (htab->sgot == NULL) | |
635 | { | |
636 | if (htab->elf.dynobj == NULL) | |
637 | htab->elf.dynobj = abfd; | |
638 | if (!create_got_section (htab->elf.dynobj, info)) | |
639 | return false; | |
640 | } | |
70256ad8 AJ |
641 | break; |
642 | ||
643 | case R_X86_64_PLT32: | |
644 | /* This symbol requires a procedure linkage table entry. We | |
407443a3 AJ |
645 | actually build the entry in adjust_dynamic_symbol, |
646 | because this might be a case of linking PIC code which is | |
647 | never referenced by a dynamic object, in which case we | |
648 | don't need to generate a procedure linkage table entry | |
649 | after all. */ | |
70256ad8 AJ |
650 | |
651 | /* If this is a local symbol, we resolve it directly without | |
407443a3 | 652 | creating a procedure linkage table entry. */ |
70256ad8 AJ |
653 | if (h == NULL) |
654 | continue; | |
655 | ||
cc78d0af | 656 | h->elf_link_hash_flags |= ELF_LINK_HASH_NEEDS_PLT; |
51b64d56 | 657 | h->plt.refcount += 1; |
70256ad8 AJ |
658 | break; |
659 | ||
cc78d0af AJ |
660 | case R_X86_64_8: |
661 | case R_X86_64_16: | |
70256ad8 AJ |
662 | case R_X86_64_32: |
663 | case R_X86_64_32S: | |
1b71fb54 AJ |
664 | /* Let's help debug shared library creation. These relocs |
665 | cannot be used in shared libs. Don't error out for | |
666 | sections we don't care about, such as debug sections or | |
667 | non-constant sections. */ | |
668 | if (info->shared | |
669 | && (sec->flags & SEC_ALLOC) != 0 | |
670 | && (sec->flags & SEC_READONLY) != 0) | |
671 | { | |
672 | (*_bfd_error_handler) | |
673 | (_("%s: relocation %s can not be used when making a shared object; recompile with -fPIC"), | |
674 | bfd_archive_filename (abfd), | |
675 | x86_64_elf_howto_table[ELF64_R_TYPE (rel->r_info)].name); | |
676 | bfd_set_error (bfd_error_bad_value); | |
677 | return false; | |
678 | } | |
679 | /* Fall through. */ | |
680 | ||
c434dee6 AJ |
681 | case R_X86_64_PC8: |
682 | case R_X86_64_PC16: | |
70256ad8 | 683 | case R_X86_64_PC32: |
1b71fb54 | 684 | case R_X86_64_64: |
c434dee6 AJ |
685 | if (h != NULL && !info->shared) |
686 | { | |
687 | /* If this reloc is in a read-only section, we might | |
688 | need a copy reloc. We can't check reliably at this | |
689 | stage whether the section is read-only, as input | |
690 | sections have not yet been mapped to output sections. | |
691 | Tentatively set the flag for now, and correct in | |
692 | adjust_dynamic_symbol. */ | |
693 | h->elf_link_hash_flags |= ELF_LINK_NON_GOT_REF; | |
694 | ||
695 | /* We may need a .plt entry if the function this reloc | |
696 | refers to is in a shared lib. */ | |
697 | h->plt.refcount += 1; | |
698 | } | |
70256ad8 AJ |
699 | |
700 | /* If we are creating a shared library, and this is a reloc | |
701 | against a global symbol, or a non PC relative reloc | |
702 | against a local symbol, then we need to copy the reloc | |
703 | into the shared library. However, if we are linking with | |
704 | -Bsymbolic, we do not need to copy a reloc against a | |
705 | global symbol which is defined in an object we are | |
407443a3 | 706 | including in the link (i.e., DEF_REGULAR is set). At |
70256ad8 AJ |
707 | this point we have not seen all the input files, so it is |
708 | possible that DEF_REGULAR is not set now but will be set | |
c434dee6 AJ |
709 | later (it is never cleared). In case of a weak definition, |
710 | DEF_REGULAR may be cleared later by a strong definition in | |
711 | a shared library. We account for that possibility below by | |
712 | storing information in the relocs_copied field of the hash | |
713 | table entry. A similar situation occurs when creating | |
714 | shared libraries and symbol visibility changes render the | |
715 | symbol local. | |
716 | ||
717 | If on the other hand, we are creating an executable, we | |
718 | may need to keep relocations for symbols satisfied by a | |
719 | dynamic library if we manage to avoid copy relocs for the | |
720 | symbol. */ | |
721 | if ((info->shared | |
722 | && (sec->flags & SEC_ALLOC) != 0 | |
723 | && (((ELF64_R_TYPE (rel->r_info) != R_X86_64_PC8) | |
724 | && (ELF64_R_TYPE (rel->r_info) != R_X86_64_PC16) | |
725 | && (ELF64_R_TYPE (rel->r_info) != R_X86_64_PC32)) | |
726 | || (h != NULL | |
727 | && (! info->symbolic | |
728 | || h->root.type == bfd_link_hash_defweak | |
729 | || (h->elf_link_hash_flags | |
730 | & ELF_LINK_HASH_DEF_REGULAR) == 0)))) | |
731 | || (!info->shared | |
732 | && (sec->flags & SEC_ALLOC) != 0 | |
733 | && h != NULL | |
734 | && (h->root.type == bfd_link_hash_defweak | |
735 | || (h->elf_link_hash_flags | |
736 | & ELF_LINK_HASH_DEF_REGULAR) == 0))) | |
70256ad8 | 737 | { |
c434dee6 AJ |
738 | struct elf64_x86_64_dyn_relocs *p; |
739 | struct elf64_x86_64_dyn_relocs **head; | |
740 | ||
741 | /* We must copy these reloc types into the output file. | |
742 | Create a reloc section in dynobj and make room for | |
743 | this reloc. */ | |
70256ad8 AJ |
744 | if (sreloc == NULL) |
745 | { | |
746 | const char *name; | |
c434dee6 | 747 | bfd *dynobj; |
70256ad8 AJ |
748 | |
749 | name = (bfd_elf_string_from_elf_section | |
750 | (abfd, | |
751 | elf_elfheader (abfd)->e_shstrndx, | |
752 | elf_section_data (sec)->rel_hdr.sh_name)); | |
753 | if (name == NULL) | |
754 | return false; | |
755 | ||
c434dee6 AJ |
756 | if (strncmp (name, ".rela", 5) != 0 |
757 | || strcmp (bfd_get_section_name (abfd, sec), | |
758 | name + 5) != 0) | |
759 | { | |
760 | (*_bfd_error_handler) | |
761 | (_("%s: bad relocation section name `%s\'"), | |
762 | bfd_archive_filename (abfd), name); | |
763 | } | |
764 | ||
765 | if (htab->elf.dynobj == NULL) | |
766 | htab->elf.dynobj = abfd; | |
767 | ||
768 | dynobj = htab->elf.dynobj; | |
70256ad8 AJ |
769 | |
770 | sreloc = bfd_get_section_by_name (dynobj, name); | |
771 | if (sreloc == NULL) | |
772 | { | |
773 | flagword flags; | |
774 | ||
775 | sreloc = bfd_make_section (dynobj, name); | |
776 | flags = (SEC_HAS_CONTENTS | SEC_READONLY | |
777 | | SEC_IN_MEMORY | SEC_LINKER_CREATED); | |
778 | if ((sec->flags & SEC_ALLOC) != 0) | |
779 | flags |= SEC_ALLOC | SEC_LOAD; | |
780 | if (sreloc == NULL | |
781 | || ! bfd_set_section_flags (dynobj, sreloc, flags) | |
cc78d0af | 782 | || ! bfd_set_section_alignment (dynobj, sreloc, 3)) |
70256ad8 AJ |
783 | return false; |
784 | } | |
c434dee6 | 785 | elf_section_data (sec)->sreloc = sreloc; |
70256ad8 AJ |
786 | } |
787 | ||
c434dee6 AJ |
788 | /* If this is a global symbol, we count the number of |
789 | relocations we need for this symbol. */ | |
790 | if (h != NULL) | |
70256ad8 | 791 | { |
c434dee6 AJ |
792 | head = &((struct elf64_x86_64_link_hash_entry *) h)->dyn_relocs; |
793 | } | |
794 | else | |
795 | { | |
796 | /* Track dynamic relocs needed for local syms too. | |
797 | We really need local syms available to do this | |
798 | easily. Oh well. */ | |
799 | ||
800 | asection *s; | |
801 | s = bfd_section_from_r_symndx (abfd, &htab->sym_sec, | |
802 | sec, r_symndx); | |
803 | if (s == NULL) | |
804 | return false; | |
70256ad8 | 805 | |
c434dee6 AJ |
806 | head = ((struct elf64_x86_64_dyn_relocs **) |
807 | &elf_section_data (s)->local_dynrel); | |
808 | } | |
70256ad8 | 809 | |
c434dee6 AJ |
810 | p = *head; |
811 | if (p == NULL || p->sec != sec) | |
812 | { | |
813 | bfd_size_type amt = sizeof *p; | |
814 | p = ((struct elf64_x86_64_dyn_relocs *) | |
815 | bfd_alloc (htab->elf.dynobj, amt)); | |
70256ad8 | 816 | if (p == NULL) |
c434dee6 AJ |
817 | return false; |
818 | p->next = *head; | |
819 | *head = p; | |
820 | p->sec = sec; | |
821 | p->count = 0; | |
822 | p->pc_count = 0; | |
70256ad8 | 823 | } |
c434dee6 AJ |
824 | |
825 | p->count += 1; | |
826 | if (ELF64_R_TYPE (rel->r_info) == R_X86_64_PC8 | |
827 | || ELF64_R_TYPE (rel->r_info) == R_X86_64_PC16 | |
828 | || ELF64_R_TYPE (rel->r_info) == R_X86_64_PC32) | |
829 | p->pc_count += 1; | |
70256ad8 AJ |
830 | } |
831 | break; | |
fe4770f4 AJ |
832 | |
833 | /* This relocation describes the C++ object vtable hierarchy. | |
834 | Reconstruct it for later use during GC. */ | |
835 | case R_X86_64_GNU_VTINHERIT: | |
836 | if (!_bfd_elf64_gc_record_vtinherit (abfd, sec, h, rel->r_offset)) | |
837 | return false; | |
838 | break; | |
839 | ||
840 | /* This relocation describes which C++ vtable entries are actually | |
841 | used. Record for later use during GC. */ | |
842 | case R_X86_64_GNU_VTENTRY: | |
cc78d0af | 843 | if (!_bfd_elf64_gc_record_vtentry (abfd, sec, h, rel->r_addend)) |
fe4770f4 AJ |
844 | return false; |
845 | break; | |
c434dee6 AJ |
846 | |
847 | default: | |
848 | break; | |
70256ad8 AJ |
849 | } |
850 | } | |
851 | ||
852 | return true; | |
853 | } | |
854 | ||
855 | /* Return the section that should be marked against GC for a given | |
407443a3 | 856 | relocation. */ |
70256ad8 AJ |
857 | |
858 | static asection * | |
1e2f5b6e AM |
859 | elf64_x86_64_gc_mark_hook (sec, info, rel, h, sym) |
860 | asection *sec; | |
70256ad8 | 861 | struct bfd_link_info *info ATTRIBUTE_UNUSED; |
c434dee6 | 862 | Elf_Internal_Rela *rel; |
70256ad8 AJ |
863 | struct elf_link_hash_entry *h; |
864 | Elf_Internal_Sym *sym; | |
865 | { | |
866 | if (h != NULL) | |
867 | { | |
fe4770f4 | 868 | switch (ELF64_R_TYPE (rel->r_info)) |
70256ad8 | 869 | { |
fe4770f4 AJ |
870 | case R_X86_64_GNU_VTINHERIT: |
871 | case R_X86_64_GNU_VTENTRY: | |
872 | break; | |
70256ad8 AJ |
873 | |
874 | default: | |
fe4770f4 AJ |
875 | switch (h->root.type) |
876 | { | |
877 | case bfd_link_hash_defined: | |
878 | case bfd_link_hash_defweak: | |
879 | return h->root.u.def.section; | |
880 | ||
881 | case bfd_link_hash_common: | |
882 | return h->root.u.c.p->section; | |
883 | ||
884 | default: | |
885 | break; | |
886 | } | |
70256ad8 AJ |
887 | } |
888 | } | |
889 | else | |
1e2f5b6e | 890 | return bfd_section_from_elf_index (sec->owner, sym->st_shndx); |
70256ad8 AJ |
891 | |
892 | return NULL; | |
893 | } | |
894 | ||
407443a3 | 895 | /* Update the got entry reference counts for the section being removed. */ |
70256ad8 AJ |
896 | |
897 | static boolean | |
898 | elf64_x86_64_gc_sweep_hook (abfd, info, sec, relocs) | |
899 | bfd *abfd; | |
c434dee6 | 900 | struct bfd_link_info *info; |
70256ad8 AJ |
901 | asection *sec; |
902 | const Elf_Internal_Rela *relocs; | |
903 | { | |
904 | Elf_Internal_Shdr *symtab_hdr; | |
905 | struct elf_link_hash_entry **sym_hashes; | |
906 | bfd_signed_vma *local_got_refcounts; | |
907 | const Elf_Internal_Rela *rel, *relend; | |
908 | unsigned long r_symndx; | |
909 | struct elf_link_hash_entry *h; | |
c434dee6 AJ |
910 | |
911 | elf_section_data (sec)->local_dynrel = NULL; | |
70256ad8 AJ |
912 | |
913 | symtab_hdr = &elf_tdata (abfd)->symtab_hdr; | |
914 | sym_hashes = elf_sym_hashes (abfd); | |
915 | local_got_refcounts = elf_local_got_refcounts (abfd); | |
916 | ||
70256ad8 AJ |
917 | relend = relocs + sec->reloc_count; |
918 | for (rel = relocs; rel < relend; rel++) | |
919 | switch (ELF64_R_TYPE (rel->r_info)) | |
920 | { | |
921 | case R_X86_64_GOT32: | |
922 | case R_X86_64_GOTPCREL: | |
923 | r_symndx = ELF64_R_SYM (rel->r_info); | |
924 | if (r_symndx >= symtab_hdr->sh_info) | |
925 | { | |
926 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; | |
927 | if (h->got.refcount > 0) | |
c434dee6 | 928 | h->got.refcount -= 1; |
70256ad8 AJ |
929 | } |
930 | else if (local_got_refcounts != NULL) | |
931 | { | |
932 | if (local_got_refcounts[r_symndx] > 0) | |
c434dee6 | 933 | local_got_refcounts[r_symndx] -= 1; |
70256ad8 AJ |
934 | } |
935 | break; | |
936 | ||
c434dee6 AJ |
937 | case R_X86_64_8: |
938 | case R_X86_64_16: | |
939 | case R_X86_64_32: | |
940 | case R_X86_64_64: | |
941 | case R_X86_64_32S: | |
942 | case R_X86_64_PC8: | |
943 | case R_X86_64_PC16: | |
944 | case R_X86_64_PC32: | |
945 | r_symndx = ELF64_R_SYM (rel->r_info); | |
946 | if (r_symndx >= symtab_hdr->sh_info) | |
947 | { | |
948 | struct elf64_x86_64_link_hash_entry *eh; | |
949 | struct elf64_x86_64_dyn_relocs **pp; | |
950 | struct elf64_x86_64_dyn_relocs *p; | |
951 | ||
952 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; | |
953 | ||
954 | if (!info->shared && h->plt.refcount > 0) | |
955 | h->plt.refcount -= 1; | |
956 | ||
957 | eh = (struct elf64_x86_64_link_hash_entry *) h; | |
958 | ||
959 | for (pp = &eh->dyn_relocs; (p = *pp) != NULL; pp = &p->next) | |
960 | if (p->sec == sec) | |
961 | { | |
962 | if (ELF64_R_TYPE (rel->r_info) == R_X86_64_PC8 | |
963 | || ELF64_R_TYPE (rel->r_info) == R_X86_64_PC16 | |
964 | || ELF64_R_TYPE (rel->r_info) == R_X86_64_PC32) | |
965 | p->pc_count -= 1; | |
966 | p->count -= 1; | |
967 | if (p->count == 0) | |
968 | *pp = p->next; | |
969 | break; | |
970 | } | |
971 | } | |
972 | break; | |
973 | ||
974 | ||
70256ad8 AJ |
975 | case R_X86_64_PLT32: |
976 | r_symndx = ELF64_R_SYM (rel->r_info); | |
977 | if (r_symndx >= symtab_hdr->sh_info) | |
978 | { | |
979 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; | |
980 | if (h->plt.refcount > 0) | |
981 | h->plt.refcount -= 1; | |
982 | } | |
983 | break; | |
984 | ||
985 | default: | |
986 | break; | |
987 | } | |
988 | ||
989 | return true; | |
990 | } | |
991 | ||
992 | /* Adjust a symbol defined by a dynamic object and referenced by a | |
993 | regular object. The current definition is in some section of the | |
994 | dynamic object, but we're not including those sections. We have to | |
995 | change the definition to something the rest of the link can | |
407443a3 | 996 | understand. */ |
70256ad8 AJ |
997 | |
998 | static boolean | |
999 | elf64_x86_64_adjust_dynamic_symbol (info, h) | |
1000 | struct bfd_link_info *info; | |
1001 | struct elf_link_hash_entry *h; | |
1002 | { | |
c434dee6 AJ |
1003 | struct elf64_x86_64_link_hash_table *htab; |
1004 | struct elf64_x86_64_link_hash_entry * eh; | |
1005 | struct elf64_x86_64_dyn_relocs *p; | |
70256ad8 AJ |
1006 | asection *s; |
1007 | unsigned int power_of_two; | |
1008 | ||
70256ad8 AJ |
1009 | /* If this is a function, put it in the procedure linkage table. We |
1010 | will fill in the contents of the procedure linkage table later, | |
1011 | when we know the address of the .got section. */ | |
1012 | if (h->type == STT_FUNC | |
1013 | || (h->elf_link_hash_flags & ELF_LINK_HASH_NEEDS_PLT) != 0) | |
1014 | { | |
c434dee6 AJ |
1015 | if (h->plt.refcount <= 0 |
1016 | || (! info->shared | |
1017 | && (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_DYNAMIC) == 0 | |
1018 | && (h->elf_link_hash_flags & ELF_LINK_HASH_REF_DYNAMIC) == 0 | |
1019 | && h->root.type != bfd_link_hash_undefweak | |
1020 | && h->root.type != bfd_link_hash_undefined)) | |
70256ad8 | 1021 | { |
70256ad8 AJ |
1022 | /* This case can occur if we saw a PLT32 reloc in an input |
1023 | file, but the symbol was never referred to by a dynamic | |
1024 | object, or if all references were garbage collected. In | |
1025 | such a case, we don't actually need to build a procedure | |
1026 | linkage table, and we can just do a PC32 reloc instead. */ | |
70256ad8 AJ |
1027 | h->plt.offset = (bfd_vma) -1; |
1028 | h->elf_link_hash_flags &= ~ELF_LINK_HASH_NEEDS_PLT; | |
70256ad8 AJ |
1029 | } |
1030 | ||
70256ad8 AJ |
1031 | return true; |
1032 | } | |
bbd7ec4a | 1033 | else |
c434dee6 AJ |
1034 | /* It's possible that we incorrectly decided a .plt reloc was |
1035 | needed for an R_X86_64_PC32 reloc to a non-function sym in | |
1036 | check_relocs. We can't decide accurately between function and | |
1037 | non-function syms in check-relocs; Objects loaded later in | |
1038 | the link may change h->type. So fix it now. */ | |
bbd7ec4a | 1039 | h->plt.offset = (bfd_vma) -1; |
70256ad8 AJ |
1040 | |
1041 | /* If this is a weak symbol, and there is a real definition, the | |
1042 | processor independent code will have arranged for us to see the | |
407443a3 | 1043 | real definition first, and we can just use the same value. */ |
70256ad8 AJ |
1044 | if (h->weakdef != NULL) |
1045 | { | |
1046 | BFD_ASSERT (h->weakdef->root.type == bfd_link_hash_defined | |
1047 | || h->weakdef->root.type == bfd_link_hash_defweak); | |
1048 | h->root.u.def.section = h->weakdef->root.u.def.section; | |
1049 | h->root.u.def.value = h->weakdef->root.u.def.value; | |
1050 | return true; | |
1051 | } | |
1052 | ||
1053 | /* This is a reference to a symbol defined by a dynamic object which | |
407443a3 | 1054 | is not a function. */ |
70256ad8 AJ |
1055 | |
1056 | /* If we are creating a shared library, we must presume that the | |
1057 | only references to the symbol are via the global offset table. | |
1058 | For such cases we need not do anything here; the relocations will | |
407443a3 | 1059 | be handled correctly by relocate_section. */ |
70256ad8 AJ |
1060 | if (info->shared) |
1061 | return true; | |
1062 | ||
1063 | /* If there are no references to this symbol that do not use the | |
1064 | GOT, we don't need to generate a copy reloc. */ | |
1065 | if ((h->elf_link_hash_flags & ELF_LINK_NON_GOT_REF) == 0) | |
1066 | return true; | |
1067 | ||
c434dee6 AJ |
1068 | /* If -z nocopyreloc was given, we won't generate them either. */ |
1069 | if (info->nocopyreloc) | |
1070 | { | |
1071 | h->elf_link_hash_flags &= ~ELF_LINK_NON_GOT_REF; | |
1072 | return true; | |
1073 | } | |
1074 | ||
1075 | eh = (struct elf64_x86_64_link_hash_entry *) h; | |
1076 | for (p = eh->dyn_relocs; p != NULL; p = p->next) | |
1077 | { | |
1078 | s = p->sec->output_section; | |
1079 | if (s != NULL && (s->flags & SEC_READONLY) != 0) | |
1080 | break; | |
1081 | } | |
1082 | ||
1083 | /* If we didn't find any dynamic relocs in read-only sections, then | |
1084 | we'll be keeping the dynamic relocs and avoiding the copy reloc. */ | |
1085 | if (p == NULL) | |
1086 | { | |
1087 | h->elf_link_hash_flags &= ~ELF_LINK_NON_GOT_REF; | |
1088 | return true; | |
1089 | } | |
1090 | ||
70256ad8 | 1091 | /* We must allocate the symbol in our .dynbss section, which will |
407443a3 | 1092 | become part of the .bss section of the executable. There will be |
70256ad8 AJ |
1093 | an entry for this symbol in the .dynsym section. The dynamic |
1094 | object will contain position independent code, so all references | |
1095 | from the dynamic object to this symbol will go through the global | |
1096 | offset table. The dynamic linker will use the .dynsym entry to | |
1097 | determine the address it must put in the global offset table, so | |
1098 | both the dynamic object and the regular object will refer to the | |
1099 | same memory location for the variable. */ | |
1100 | ||
c434dee6 | 1101 | htab = elf64_x86_64_hash_table (info); |
70256ad8 AJ |
1102 | |
1103 | /* We must generate a R_X86_64_COPY reloc to tell the dynamic linker | |
1104 | to copy the initial value out of the dynamic object and into the | |
cedb70c5 | 1105 | runtime process image. */ |
70256ad8 AJ |
1106 | if ((h->root.u.def.section->flags & SEC_ALLOC) != 0) |
1107 | { | |
c434dee6 | 1108 | htab->srelbss->_raw_size += sizeof (Elf64_External_Rela); |
70256ad8 AJ |
1109 | h->elf_link_hash_flags |= ELF_LINK_HASH_NEEDS_COPY; |
1110 | } | |
1111 | ||
1112 | /* We need to figure out the alignment required for this symbol. I | |
407443a3 | 1113 | have no idea how ELF linkers handle this. 16-bytes is the size |
70256ad8 AJ |
1114 | of the largest type that requires hard alignment -- long double. */ |
1115 | /* FIXME: This is VERY ugly. Should be fixed for all architectures using | |
1116 | this construct. */ | |
1117 | power_of_two = bfd_log2 (h->size); | |
1118 | if (power_of_two > 4) | |
1119 | power_of_two = 4; | |
1120 | ||
1121 | /* Apply the required alignment. */ | |
c434dee6 | 1122 | s = htab->sdynbss; |
70256ad8 | 1123 | s->_raw_size = BFD_ALIGN (s->_raw_size, (bfd_size_type) (1 << power_of_two)); |
c434dee6 | 1124 | if (power_of_two > bfd_get_section_alignment (htab->elf.dynobj, s)) |
70256ad8 | 1125 | { |
c434dee6 | 1126 | if (! bfd_set_section_alignment (htab->elf.dynobj, s, power_of_two)) |
70256ad8 AJ |
1127 | return false; |
1128 | } | |
1129 | ||
1130 | /* Define the symbol as being at this point in the section. */ | |
1131 | h->root.u.def.section = s; | |
1132 | h->root.u.def.value = s->_raw_size; | |
1133 | ||
1134 | /* Increment the section size to make room for the symbol. */ | |
1135 | s->_raw_size += h->size; | |
1136 | ||
1137 | return true; | |
1138 | } | |
1139 | ||
c434dee6 AJ |
1140 | /* This is the condition under which elf64_x86_64_finish_dynamic_symbol |
1141 | will be called from elflink.h. If elflink.h doesn't call our | |
1142 | finish_dynamic_symbol routine, we'll need to do something about | |
1143 | initializing any .plt and .got entries in elf64_x86_64_relocate_section. */ | |
1144 | #define WILL_CALL_FINISH_DYNAMIC_SYMBOL(DYN, INFO, H) \ | |
1145 | ((DYN) \ | |
1146 | && ((INFO)->shared \ | |
1147 | || ((H)->elf_link_hash_flags & ELF_LINK_FORCED_LOCAL) == 0) \ | |
1148 | && ((H)->dynindx != -1 \ | |
1149 | || ((H)->elf_link_hash_flags & ELF_LINK_FORCED_LOCAL) != 0)) | |
1150 | ||
1151 | /* Allocate space in .plt, .got and associated reloc sections for | |
1152 | dynamic relocs. */ | |
1153 | ||
1154 | static boolean | |
1155 | allocate_dynrelocs (h, inf) | |
1156 | struct elf_link_hash_entry *h; | |
1157 | PTR inf; | |
1158 | { | |
1159 | struct bfd_link_info *info; | |
1160 | struct elf64_x86_64_link_hash_table *htab; | |
1161 | struct elf64_x86_64_link_hash_entry *eh; | |
1162 | struct elf64_x86_64_dyn_relocs *p; | |
1163 | ||
e92d460e | 1164 | if (h->root.type == bfd_link_hash_indirect) |
c434dee6 AJ |
1165 | return true; |
1166 | ||
e92d460e AM |
1167 | if (h->root.type == bfd_link_hash_warning) |
1168 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
1169 | ||
c434dee6 AJ |
1170 | info = (struct bfd_link_info *) inf; |
1171 | htab = elf64_x86_64_hash_table (info); | |
1172 | ||
1173 | if (htab->elf.dynamic_sections_created | |
1174 | && h->plt.refcount > 0) | |
1175 | { | |
1176 | /* Make sure this symbol is output as a dynamic symbol. | |
1177 | Undefined weak syms won't yet be marked as dynamic. */ | |
1178 | if (h->dynindx == -1 | |
1179 | && (h->elf_link_hash_flags & ELF_LINK_FORCED_LOCAL) == 0) | |
1180 | { | |
1181 | if (! bfd_elf64_link_record_dynamic_symbol (info, h)) | |
1182 | return false; | |
1183 | } | |
1184 | ||
1185 | if (WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, info, h)) | |
1186 | { | |
1187 | asection *s = htab->splt; | |
1188 | ||
1189 | /* If this is the first .plt entry, make room for the special | |
1190 | first entry. */ | |
1191 | if (s->_raw_size == 0) | |
1192 | s->_raw_size += PLT_ENTRY_SIZE; | |
1193 | ||
1194 | h->plt.offset = s->_raw_size; | |
1195 | ||
1196 | /* If this symbol is not defined in a regular file, and we are | |
1197 | not generating a shared library, then set the symbol to this | |
1198 | location in the .plt. This is required to make function | |
1199 | pointers compare as equal between the normal executable and | |
1200 | the shared library. */ | |
1201 | if (! info->shared | |
1202 | && (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) == 0) | |
1203 | { | |
1204 | h->root.u.def.section = s; | |
1205 | h->root.u.def.value = h->plt.offset; | |
1206 | } | |
1207 | ||
1208 | /* Make room for this entry. */ | |
1209 | s->_raw_size += PLT_ENTRY_SIZE; | |
1210 | ||
1211 | /* We also need to make an entry in the .got.plt section, which | |
1212 | will be placed in the .got section by the linker script. */ | |
1213 | htab->sgotplt->_raw_size += GOT_ENTRY_SIZE; | |
1214 | ||
1215 | /* We also need to make an entry in the .rela.plt section. */ | |
1216 | htab->srelplt->_raw_size += sizeof (Elf64_External_Rela); | |
1217 | } | |
1218 | else | |
1219 | { | |
1220 | h->plt.offset = (bfd_vma) -1; | |
1221 | h->elf_link_hash_flags &= ~ELF_LINK_HASH_NEEDS_PLT; | |
1222 | } | |
1223 | } | |
1224 | else | |
1225 | { | |
1226 | h->plt.offset = (bfd_vma) -1; | |
1227 | h->elf_link_hash_flags &= ~ELF_LINK_HASH_NEEDS_PLT; | |
1228 | } | |
1229 | ||
1230 | if (h->got.refcount > 0) | |
1231 | { | |
1232 | asection *s; | |
1233 | boolean dyn; | |
1234 | ||
1235 | /* Make sure this symbol is output as a dynamic symbol. | |
1236 | Undefined weak syms won't yet be marked as dynamic. */ | |
1237 | if (h->dynindx == -1 | |
1238 | && (h->elf_link_hash_flags & ELF_LINK_FORCED_LOCAL) == 0) | |
1239 | { | |
1240 | if (! bfd_elf64_link_record_dynamic_symbol (info, h)) | |
1241 | return false; | |
1242 | } | |
1243 | ||
1244 | s = htab->sgot; | |
1245 | h->got.offset = s->_raw_size; | |
1246 | s->_raw_size += GOT_ENTRY_SIZE; | |
1247 | dyn = htab->elf.dynamic_sections_created; | |
1248 | if (WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info, h)) | |
1249 | htab->srelgot->_raw_size += sizeof (Elf64_External_Rela); | |
1250 | } | |
1251 | else | |
1252 | h->got.offset = (bfd_vma) -1; | |
1253 | ||
1254 | eh = (struct elf64_x86_64_link_hash_entry *) h; | |
1255 | if (eh->dyn_relocs == NULL) | |
1256 | return true; | |
1257 | ||
1258 | /* In the shared -Bsymbolic case, discard space allocated for | |
1259 | dynamic pc-relative relocs against symbols which turn out to be | |
1260 | defined in regular objects. For the normal shared case, discard | |
1261 | space for pc-relative relocs that have become local due to symbol | |
1262 | visibility changes. */ | |
1263 | ||
1264 | if (info->shared) | |
1265 | { | |
1266 | if ((h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) != 0 | |
1267 | && ((h->elf_link_hash_flags & ELF_LINK_FORCED_LOCAL) != 0 | |
1268 | || info->symbolic)) | |
1269 | { | |
1270 | struct elf64_x86_64_dyn_relocs **pp; | |
1271 | ||
1272 | for (pp = &eh->dyn_relocs; (p = *pp) != NULL; ) | |
1273 | { | |
1274 | p->count -= p->pc_count; | |
1275 | p->pc_count = 0; | |
1276 | if (p->count == 0) | |
1277 | *pp = p->next; | |
1278 | else | |
1279 | pp = &p->next; | |
1280 | } | |
1281 | } | |
1282 | } | |
1283 | else | |
1284 | { | |
1285 | /* For the non-shared case, discard space for relocs against | |
1286 | symbols which turn out to need copy relocs or are not | |
1287 | dynamic. */ | |
1288 | ||
1289 | if ((h->elf_link_hash_flags & ELF_LINK_NON_GOT_REF) == 0 | |
1290 | && (((h->elf_link_hash_flags & ELF_LINK_HASH_DEF_DYNAMIC) != 0 | |
1291 | && (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) == 0) | |
1292 | || (htab->elf.dynamic_sections_created | |
1293 | && (h->root.type == bfd_link_hash_undefweak | |
1294 | || h->root.type == bfd_link_hash_undefined)))) | |
1295 | { | |
1296 | /* Make sure this symbol is output as a dynamic symbol. | |
1297 | Undefined weak syms won't yet be marked as dynamic. */ | |
1298 | if (h->dynindx == -1 | |
1299 | && (h->elf_link_hash_flags & ELF_LINK_FORCED_LOCAL) == 0) | |
1300 | { | |
1301 | if (! bfd_elf64_link_record_dynamic_symbol (info, h)) | |
1302 | return false; | |
1303 | } | |
1304 | ||
1305 | /* If that succeeded, we know we'll be keeping all the | |
1306 | relocs. */ | |
1307 | if (h->dynindx != -1) | |
1308 | goto keep; | |
1309 | } | |
1310 | ||
1311 | eh->dyn_relocs = NULL; | |
1312 | ||
1313 | keep: ; | |
1314 | } | |
1315 | ||
1316 | /* Finally, allocate space. */ | |
1317 | for (p = eh->dyn_relocs; p != NULL; p = p->next) | |
1318 | { | |
1319 | asection *sreloc = elf_section_data (p->sec)->sreloc; | |
1320 | sreloc->_raw_size += p->count * sizeof (Elf64_External_Rela); | |
1321 | } | |
1322 | ||
1323 | return true; | |
1324 | } | |
1325 | ||
1326 | /* Find any dynamic relocs that apply to read-only sections. */ | |
1327 | ||
1328 | static boolean | |
1329 | readonly_dynrelocs (h, inf) | |
1330 | struct elf_link_hash_entry *h; | |
1331 | PTR inf; | |
1332 | { | |
1333 | struct elf64_x86_64_link_hash_entry *eh; | |
1334 | struct elf64_x86_64_dyn_relocs *p; | |
1335 | ||
e92d460e AM |
1336 | if (h->root.type == bfd_link_hash_warning) |
1337 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
1338 | ||
c434dee6 AJ |
1339 | eh = (struct elf64_x86_64_link_hash_entry *) h; |
1340 | for (p = eh->dyn_relocs; p != NULL; p = p->next) | |
1341 | { | |
1342 | asection *s = p->sec->output_section; | |
1343 | ||
1344 | if (s != NULL && (s->flags & SEC_READONLY) != 0) | |
1345 | { | |
1346 | struct bfd_link_info *info = (struct bfd_link_info *) inf; | |
1347 | ||
1348 | info->flags |= DF_TEXTREL; | |
1349 | ||
1350 | /* Not an error, just cut short the traversal. */ | |
1351 | return false; | |
1352 | } | |
1353 | } | |
1354 | return true; | |
1355 | } | |
1356 | ||
70256ad8 AJ |
1357 | /* Set the sizes of the dynamic sections. */ |
1358 | ||
1359 | static boolean | |
1360 | elf64_x86_64_size_dynamic_sections (output_bfd, info) | |
8df9fc9d | 1361 | bfd *output_bfd ATTRIBUTE_UNUSED; |
70256ad8 AJ |
1362 | struct bfd_link_info *info; |
1363 | { | |
c434dee6 | 1364 | struct elf64_x86_64_link_hash_table *htab; |
70256ad8 AJ |
1365 | bfd *dynobj; |
1366 | asection *s; | |
70256ad8 | 1367 | boolean relocs; |
c434dee6 | 1368 | bfd *ibfd; |
70256ad8 | 1369 | |
c434dee6 AJ |
1370 | htab = elf64_x86_64_hash_table (info); |
1371 | dynobj = htab->elf.dynobj; | |
1372 | if (dynobj == NULL) | |
1373 | abort (); | |
70256ad8 | 1374 | |
c434dee6 | 1375 | if (htab->elf.dynamic_sections_created) |
70256ad8 AJ |
1376 | { |
1377 | /* Set the contents of the .interp section to the interpreter. */ | |
1378 | if (! info->shared) | |
1379 | { | |
1380 | s = bfd_get_section_by_name (dynobj, ".interp"); | |
c434dee6 AJ |
1381 | if (s == NULL) |
1382 | abort (); | |
70256ad8 AJ |
1383 | s->_raw_size = sizeof ELF_DYNAMIC_INTERPRETER; |
1384 | s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER; | |
1385 | } | |
1386 | } | |
70256ad8 | 1387 | |
c434dee6 AJ |
1388 | /* Set up .got offsets for local syms, and space for local dynamic |
1389 | relocs. */ | |
1390 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next) | |
70256ad8 | 1391 | { |
c434dee6 AJ |
1392 | bfd_signed_vma *local_got; |
1393 | bfd_signed_vma *end_local_got; | |
1394 | bfd_size_type locsymcount; | |
1395 | Elf_Internal_Shdr *symtab_hdr; | |
1396 | asection *srel; | |
70256ad8 | 1397 | |
c434dee6 | 1398 | if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour) |
70256ad8 AJ |
1399 | continue; |
1400 | ||
c434dee6 | 1401 | for (s = ibfd->sections; s != NULL; s = s->next) |
70256ad8 | 1402 | { |
c434dee6 AJ |
1403 | struct elf64_x86_64_dyn_relocs *p; |
1404 | ||
1405 | for (p = *((struct elf64_x86_64_dyn_relocs **) | |
1406 | &elf_section_data (s)->local_dynrel); | |
1407 | p != NULL; | |
1408 | p = p->next) | |
70256ad8 | 1409 | { |
c434dee6 AJ |
1410 | if (!bfd_is_abs_section (p->sec) |
1411 | && bfd_is_abs_section (p->sec->output_section)) | |
1412 | { | |
1413 | /* Input section has been discarded, either because | |
1414 | it is a copy of a linkonce section or due to | |
1415 | linker script /DISCARD/, so we'll be discarding | |
1416 | the relocs too. */ | |
1417 | } | |
1418 | else if (p->count != 0) | |
1419 | { | |
1420 | srel = elf_section_data (p->sec)->sreloc; | |
1421 | srel->_raw_size += p->count * sizeof (Elf64_External_Rela); | |
1422 | if ((p->sec->output_section->flags & SEC_READONLY) != 0) | |
1423 | info->flags |= DF_TEXTREL; | |
1424 | ||
1425 | } | |
70256ad8 AJ |
1426 | } |
1427 | } | |
c434dee6 AJ |
1428 | |
1429 | local_got = elf_local_got_refcounts (ibfd); | |
1430 | if (!local_got) | |
1431 | continue; | |
1432 | ||
1433 | symtab_hdr = &elf_tdata (ibfd)->symtab_hdr; | |
1434 | locsymcount = symtab_hdr->sh_info; | |
1435 | end_local_got = local_got + locsymcount; | |
1436 | s = htab->sgot; | |
1437 | srel = htab->srelgot; | |
1438 | for (; local_got < end_local_got; ++local_got) | |
70256ad8 | 1439 | { |
c434dee6 | 1440 | if (*local_got > 0) |
70256ad8 | 1441 | { |
c434dee6 AJ |
1442 | *local_got = s->_raw_size; |
1443 | s->_raw_size += GOT_ENTRY_SIZE; | |
1444 | if (info->shared) | |
1445 | srel->_raw_size += sizeof (Elf64_External_Rela); | |
70256ad8 AJ |
1446 | } |
1447 | else | |
c434dee6 AJ |
1448 | *local_got = (bfd_vma) -1; |
1449 | } | |
1450 | } | |
70256ad8 | 1451 | |
c434dee6 AJ |
1452 | /* Allocate global sym .plt and .got entries, and space for global |
1453 | sym dynamic relocs. */ | |
1454 | elf_link_hash_traverse (&htab->elf, allocate_dynrelocs, (PTR) info); | |
1455 | ||
1456 | /* We now have determined the sizes of the various dynamic sections. | |
1457 | Allocate memory for them. */ | |
1458 | relocs = false; | |
1459 | for (s = dynobj->sections; s != NULL; s = s->next) | |
1460 | { | |
1461 | if ((s->flags & SEC_LINKER_CREATED) == 0) | |
1462 | continue; | |
1463 | ||
1464 | if (s == htab->splt | |
1465 | || s == htab->sgot | |
1466 | || s == htab->sgotplt) | |
1467 | { | |
1468 | /* Strip this section if we don't need it; see the | |
1469 | comment below. */ | |
1470 | } | |
1471 | else if (strncmp (bfd_get_section_name (dynobj, s), ".rela", 5) == 0) | |
1472 | { | |
1473 | if (s->_raw_size != 0 && s != htab->srelplt) | |
1474 | relocs = true; | |
1475 | ||
1476 | /* We use the reloc_count field as a counter if we need | |
1477 | to copy relocs into the output file. */ | |
1478 | s->reloc_count = 0; | |
70256ad8 | 1479 | } |
c434dee6 | 1480 | else |
70256ad8 AJ |
1481 | { |
1482 | /* It's not one of our sections, so don't allocate space. */ | |
1483 | continue; | |
1484 | } | |
1485 | ||
c434dee6 | 1486 | if (s->_raw_size == 0) |
70256ad8 | 1487 | { |
c434dee6 AJ |
1488 | /* If we don't need this section, strip it from the |
1489 | output file. This is mostly to handle .rela.bss and | |
1490 | .rela.plt. We must create both sections in | |
1491 | create_dynamic_sections, because they must be created | |
1492 | before the linker maps input sections to output | |
1493 | sections. The linker does that before | |
1494 | adjust_dynamic_symbol is called, and it is that | |
1495 | function which decides whether anything needs to go | |
1496 | into these sections. */ | |
1497 | ||
70256ad8 AJ |
1498 | _bfd_strip_section_from_output (info, s); |
1499 | continue; | |
1500 | } | |
1501 | ||
1502 | /* Allocate memory for the section contents. We use bfd_zalloc | |
1503 | here in case unused entries are not reclaimed before the | |
1504 | section's contents are written out. This should not happen, | |
1505 | but this way if it does, we get a R_X86_64_NONE reloc instead | |
1506 | of garbage. */ | |
1507 | s->contents = (bfd_byte *) bfd_zalloc (dynobj, s->_raw_size); | |
c434dee6 | 1508 | if (s->contents == NULL) |
70256ad8 AJ |
1509 | return false; |
1510 | } | |
1511 | ||
c434dee6 | 1512 | if (htab->elf.dynamic_sections_created) |
70256ad8 AJ |
1513 | { |
1514 | /* Add some entries to the .dynamic section. We fill in the | |
1515 | values later, in elf64_x86_64_finish_dynamic_sections, but we | |
1516 | must add the entries now so that we get the correct size for | |
407443a3 | 1517 | the .dynamic section. The DT_DEBUG entry is filled in by the |
70256ad8 | 1518 | dynamic linker and used by the debugger. */ |
dc810e39 AM |
1519 | #define add_dynamic_entry(TAG, VAL) \ |
1520 | bfd_elf64_add_dynamic_entry (info, (bfd_vma) (TAG), (bfd_vma) (VAL)) | |
1521 | ||
70256ad8 AJ |
1522 | if (! info->shared) |
1523 | { | |
dc810e39 | 1524 | if (!add_dynamic_entry (DT_DEBUG, 0)) |
70256ad8 AJ |
1525 | return false; |
1526 | } | |
1527 | ||
c434dee6 | 1528 | if (htab->splt->_raw_size != 0) |
70256ad8 | 1529 | { |
dc810e39 AM |
1530 | if (!add_dynamic_entry (DT_PLTGOT, 0) |
1531 | || !add_dynamic_entry (DT_PLTRELSZ, 0) | |
1532 | || !add_dynamic_entry (DT_PLTREL, DT_RELA) | |
1533 | || !add_dynamic_entry (DT_JMPREL, 0)) | |
70256ad8 AJ |
1534 | return false; |
1535 | } | |
1536 | ||
1537 | if (relocs) | |
1538 | { | |
dc810e39 AM |
1539 | if (!add_dynamic_entry (DT_RELA, 0) |
1540 | || !add_dynamic_entry (DT_RELASZ, 0) | |
1541 | || !add_dynamic_entry (DT_RELAENT, sizeof (Elf64_External_Rela))) | |
70256ad8 | 1542 | return false; |
70256ad8 | 1543 | |
c434dee6 AJ |
1544 | /* If any dynamic relocs apply to a read-only section, |
1545 | then we need a DT_TEXTREL entry. */ | |
1546 | if ((info->flags & DF_TEXTREL) == 0) | |
1547 | elf_link_hash_traverse (&htab->elf, readonly_dynrelocs, | |
1548 | (PTR) info); | |
1549 | ||
1550 | if ((info->flags & DF_TEXTREL) != 0) | |
1551 | { | |
1552 | if (!add_dynamic_entry (DT_TEXTREL, 0)) | |
1553 | return false; | |
1554 | } | |
70256ad8 AJ |
1555 | } |
1556 | } | |
dc810e39 | 1557 | #undef add_dynamic_entry |
70256ad8 AJ |
1558 | |
1559 | return true; | |
1560 | } | |
1561 | ||
8d88c4ca NC |
1562 | /* Relocate an x86_64 ELF section. */ |
1563 | ||
1564 | static boolean | |
1565 | elf64_x86_64_relocate_section (output_bfd, info, input_bfd, input_section, | |
fe4770f4 | 1566 | contents, relocs, local_syms, local_sections) |
8d88c4ca NC |
1567 | bfd *output_bfd; |
1568 | struct bfd_link_info *info; | |
1569 | bfd *input_bfd; | |
1570 | asection *input_section; | |
1571 | bfd_byte *contents; | |
1572 | Elf_Internal_Rela *relocs; | |
1573 | Elf_Internal_Sym *local_syms; | |
1574 | asection **local_sections; | |
1575 | { | |
c434dee6 | 1576 | struct elf64_x86_64_link_hash_table *htab; |
8d88c4ca NC |
1577 | Elf_Internal_Shdr *symtab_hdr; |
1578 | struct elf_link_hash_entry **sym_hashes; | |
1579 | bfd_vma *local_got_offsets; | |
c434dee6 | 1580 | Elf_Internal_Rela *rel; |
8d88c4ca NC |
1581 | Elf_Internal_Rela *relend; |
1582 | ||
b491616a AM |
1583 | if (info->relocateable) |
1584 | return true; | |
1585 | ||
c434dee6 | 1586 | htab = elf64_x86_64_hash_table (info); |
8d88c4ca NC |
1587 | symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr; |
1588 | sym_hashes = elf_sym_hashes (input_bfd); | |
1589 | local_got_offsets = elf_local_got_offsets (input_bfd); | |
1590 | ||
c434dee6 | 1591 | rel = relocs; |
8d88c4ca | 1592 | relend = relocs + input_section->reloc_count; |
c434dee6 | 1593 | for (; rel < relend; rel++) |
8d88c4ca NC |
1594 | { |
1595 | int r_type; | |
1596 | reloc_howto_type *howto; | |
1597 | unsigned long r_symndx; | |
1598 | struct elf_link_hash_entry *h; | |
1599 | Elf_Internal_Sym *sym; | |
1600 | asection *sec; | |
c434dee6 | 1601 | bfd_vma off; |
8d88c4ca | 1602 | bfd_vma relocation; |
c434dee6 | 1603 | boolean unresolved_reloc; |
8d88c4ca | 1604 | bfd_reloc_status_type r; |
8d88c4ca | 1605 | |
c434dee6 | 1606 | r_type = ELF64_R_TYPE (rel->r_info); |
fe4770f4 AJ |
1607 | if (r_type == (int) R_X86_64_GNU_VTINHERIT |
1608 | || r_type == (int) R_X86_64_GNU_VTENTRY) | |
1609 | continue; | |
8d88c4ca | 1610 | |
c434dee6 | 1611 | if (r_type < 0 || r_type >= R_X86_64_max) |
8da6118f KH |
1612 | { |
1613 | bfd_set_error (bfd_error_bad_value); | |
1614 | return false; | |
1615 | } | |
8d88c4ca | 1616 | |
b491616a | 1617 | howto = x86_64_elf_howto_table + r_type; |
c434dee6 | 1618 | r_symndx = ELF64_R_SYM (rel->r_info); |
8d88c4ca NC |
1619 | h = NULL; |
1620 | sym = NULL; | |
1621 | sec = NULL; | |
c434dee6 | 1622 | unresolved_reloc = false; |
8d88c4ca | 1623 | if (r_symndx < symtab_hdr->sh_info) |
8da6118f KH |
1624 | { |
1625 | sym = local_syms + r_symndx; | |
1626 | sec = local_sections[r_symndx]; | |
c434dee6 AJ |
1627 | |
1628 | relocation = _bfd_elf_rela_local_sym (output_bfd, sym, sec, rel); | |
8da6118f | 1629 | } |
8d88c4ca | 1630 | else |
8da6118f KH |
1631 | { |
1632 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; | |
1633 | while (h->root.type == bfd_link_hash_indirect | |
1634 | || h->root.type == bfd_link_hash_warning) | |
1635 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
c434dee6 | 1636 | |
8da6118f KH |
1637 | if (h->root.type == bfd_link_hash_defined |
1638 | || h->root.type == bfd_link_hash_defweak) | |
1639 | { | |
1640 | sec = h->root.u.def.section; | |
c434dee6 | 1641 | if (sec->output_section == NULL) |
8da6118f | 1642 | { |
c434dee6 AJ |
1643 | /* Set a flag that will be cleared later if we find a |
1644 | relocation value for this symbol. output_section | |
1645 | is typically NULL for symbols satisfied by a shared | |
1646 | library. */ | |
1647 | unresolved_reloc = true; | |
8da6118f KH |
1648 | relocation = 0; |
1649 | } | |
1650 | else | |
1651 | relocation = (h->root.u.def.value | |
1652 | + sec->output_section->vma | |
1653 | + sec->output_offset); | |
1654 | } | |
1655 | else if (h->root.type == bfd_link_hash_undefweak) | |
1656 | relocation = 0; | |
671bae9c NC |
1657 | else if (info->shared |
1658 | && (!info->symbolic || info->allow_shlib_undefined) | |
1659 | && !info->no_undefined | |
70256ad8 AJ |
1660 | && ELF_ST_VISIBILITY (h->other) == STV_DEFAULT) |
1661 | relocation = 0; | |
8da6118f KH |
1662 | else |
1663 | { | |
1664 | if (! ((*info->callbacks->undefined_symbol) | |
1665 | (info, h->root.root.string, input_bfd, | |
c434dee6 | 1666 | input_section, rel->r_offset, |
8da6118f KH |
1667 | (!info->shared || info->no_undefined |
1668 | || ELF_ST_VISIBILITY (h->other))))) | |
1669 | return false; | |
1670 | relocation = 0; | |
1671 | } | |
1672 | } | |
70256ad8 AJ |
1673 | /* When generating a shared object, the relocations handled here are |
1674 | copied into the output file to be resolved at run time. */ | |
1675 | switch (r_type) | |
1676 | { | |
1677 | case R_X86_64_GOT32: | |
1678 | /* Relocation is to the entry for this symbol in the global | |
1679 | offset table. */ | |
70256ad8 AJ |
1680 | case R_X86_64_GOTPCREL: |
1681 | /* Use global offset table as symbol value. */ | |
c434dee6 AJ |
1682 | if (htab->sgot == NULL) |
1683 | abort (); | |
053579d7 | 1684 | |
51e0a107 | 1685 | if (h != NULL) |
70256ad8 | 1686 | { |
c434dee6 AJ |
1687 | boolean dyn; |
1688 | ||
1689 | off = h->got.offset; | |
1690 | dyn = htab->elf.dynamic_sections_created; | |
51e0a107 | 1691 | |
c434dee6 | 1692 | if (! WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info, h) |
51e0a107 | 1693 | || (info->shared |
c434dee6 AJ |
1694 | && (info->symbolic |
1695 | || h->dynindx == -1 | |
1696 | || (h->elf_link_hash_flags & ELF_LINK_FORCED_LOCAL)) | |
51e0a107 JH |
1697 | && (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR))) |
1698 | { | |
1699 | /* This is actually a static link, or it is a -Bsymbolic | |
1700 | link and the symbol is defined locally, or the symbol | |
407443a3 | 1701 | was forced to be local because of a version file. We |
51e0a107 JH |
1702 | must initialize this entry in the global offset table. |
1703 | Since the offset must always be a multiple of 8, we | |
1704 | use the least significant bit to record whether we | |
1705 | have initialized it already. | |
1706 | ||
1707 | When doing a dynamic link, we create a .rela.got | |
407443a3 AJ |
1708 | relocation entry to initialize the value. This is |
1709 | done in the finish_dynamic_symbol routine. */ | |
51e0a107 JH |
1710 | if ((off & 1) != 0) |
1711 | off &= ~1; | |
1712 | else | |
1713 | { | |
1714 | bfd_put_64 (output_bfd, relocation, | |
c434dee6 | 1715 | htab->sgot->contents + off); |
51e0a107 JH |
1716 | h->got.offset |= 1; |
1717 | } | |
1718 | } | |
053579d7 | 1719 | else |
c434dee6 | 1720 | unresolved_reloc = false; |
70256ad8 | 1721 | } |
51e0a107 JH |
1722 | else |
1723 | { | |
c434dee6 AJ |
1724 | if (local_got_offsets == NULL) |
1725 | abort (); | |
51e0a107 JH |
1726 | |
1727 | off = local_got_offsets[r_symndx]; | |
1728 | ||
1729 | /* The offset must always be a multiple of 8. We use | |
407443a3 AJ |
1730 | the least significant bit to record whether we have |
1731 | already generated the necessary reloc. */ | |
51e0a107 JH |
1732 | if ((off & 1) != 0) |
1733 | off &= ~1; | |
1734 | else | |
1735 | { | |
c434dee6 AJ |
1736 | bfd_put_64 (output_bfd, relocation, |
1737 | htab->sgot->contents + off); | |
51e0a107 JH |
1738 | |
1739 | if (info->shared) | |
1740 | { | |
1741 | asection *srelgot; | |
1742 | Elf_Internal_Rela outrel; | |
c434dee6 | 1743 | Elf64_External_Rela *loc; |
70256ad8 | 1744 | |
51e0a107 JH |
1745 | /* We need to generate a R_X86_64_RELATIVE reloc |
1746 | for the dynamic linker. */ | |
c434dee6 AJ |
1747 | srelgot = htab->srelgot; |
1748 | if (srelgot == NULL) | |
1749 | abort (); | |
51e0a107 | 1750 | |
c434dee6 AJ |
1751 | outrel.r_offset = (htab->sgot->output_section->vma |
1752 | + htab->sgot->output_offset | |
51e0a107 JH |
1753 | + off); |
1754 | outrel.r_info = ELF64_R_INFO (0, R_X86_64_RELATIVE); | |
1755 | outrel.r_addend = relocation; | |
c434dee6 AJ |
1756 | loc = (Elf64_External_Rela *) srelgot->contents; |
1757 | loc += srelgot->reloc_count++; | |
1758 | bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc); | |
51e0a107 JH |
1759 | } |
1760 | ||
1761 | local_got_offsets[r_symndx] |= 1; | |
1762 | } | |
51e0a107 | 1763 | } |
6a2bda3f | 1764 | |
c434dee6 AJ |
1765 | if (off >= (bfd_vma) -2) |
1766 | abort (); | |
1767 | ||
1768 | relocation = htab->sgot->output_offset + off; | |
1769 | if (r_type == R_X86_64_GOTPCREL) | |
1770 | relocation += htab->sgot->output_section->vma; | |
1771 | ||
70256ad8 AJ |
1772 | break; |
1773 | ||
1774 | case R_X86_64_PLT32: | |
1775 | /* Relocation is to the entry for this symbol in the | |
1776 | procedure linkage table. */ | |
1777 | ||
1778 | /* Resolve a PLT32 reloc against a local symbol directly, | |
407443a3 | 1779 | without using the procedure linkage table. */ |
70256ad8 AJ |
1780 | if (h == NULL) |
1781 | break; | |
1782 | ||
c434dee6 AJ |
1783 | if (h->plt.offset == (bfd_vma) -1 |
1784 | || htab->splt == NULL) | |
70256ad8 AJ |
1785 | { |
1786 | /* We didn't make a PLT entry for this symbol. This | |
407443a3 AJ |
1787 | happens when statically linking PIC code, or when |
1788 | using -Bsymbolic. */ | |
70256ad8 AJ |
1789 | break; |
1790 | } | |
1791 | ||
c434dee6 AJ |
1792 | relocation = (htab->splt->output_section->vma |
1793 | + htab->splt->output_offset | |
70256ad8 | 1794 | + h->plt.offset); |
c434dee6 | 1795 | unresolved_reloc = false; |
70256ad8 AJ |
1796 | break; |
1797 | ||
fd8ab9e5 AJ |
1798 | case R_X86_64_PC8: |
1799 | case R_X86_64_PC16: | |
1800 | case R_X86_64_PC32: | |
70256ad8 AJ |
1801 | case R_X86_64_8: |
1802 | case R_X86_64_16: | |
1803 | case R_X86_64_32: | |
6b3db546 | 1804 | case R_X86_64_64: |
80643fbc | 1805 | /* FIXME: The ABI says the linker should make sure the value is |
407443a3 | 1806 | the same when it's zeroextended to 64 bit. */ |
c434dee6 AJ |
1807 | |
1808 | /* r_symndx will be zero only for relocs against symbols | |
1809 | from removed linkonce sections, or sections discarded by | |
1810 | a linker script. */ | |
1811 | if (r_symndx == 0 | |
1812 | || (input_section->flags & SEC_ALLOC) == 0) | |
1813 | break; | |
1814 | ||
1815 | if ((info->shared | |
1816 | && ((r_type != R_X86_64_PC8 | |
1817 | && r_type != R_X86_64_PC16 | |
1818 | && r_type != R_X86_64_PC32) | |
1819 | || (h != NULL | |
1820 | && h->dynindx != -1 | |
1821 | && (! info->symbolic | |
1822 | || (h->elf_link_hash_flags | |
1823 | & ELF_LINK_HASH_DEF_REGULAR) == 0)))) | |
1824 | || (!info->shared | |
1825 | && h != NULL | |
1826 | && h->dynindx != -1 | |
1827 | && (h->elf_link_hash_flags & ELF_LINK_NON_GOT_REF) == 0 | |
1828 | && (((h->elf_link_hash_flags | |
1829 | & ELF_LINK_HASH_DEF_DYNAMIC) != 0 | |
1830 | && (h->elf_link_hash_flags | |
1831 | & ELF_LINK_HASH_DEF_REGULAR) == 0) | |
1832 | || h->root.type == bfd_link_hash_undefweak | |
1833 | || h->root.type == bfd_link_hash_undefined))) | |
70256ad8 AJ |
1834 | { |
1835 | Elf_Internal_Rela outrel; | |
1836 | boolean skip, relocate; | |
c434dee6 AJ |
1837 | asection *sreloc; |
1838 | Elf64_External_Rela *loc; | |
70256ad8 AJ |
1839 | |
1840 | /* When generating a shared object, these relocations | |
1841 | are copied into the output file to be resolved at run | |
407443a3 | 1842 | time. */ |
70256ad8 | 1843 | |
70256ad8 | 1844 | skip = false; |
0bb2d96a | 1845 | relocate = false; |
70256ad8 | 1846 | |
c629eae0 JJ |
1847 | outrel.r_offset = |
1848 | _bfd_elf_section_offset (output_bfd, info, input_section, | |
c434dee6 | 1849 | rel->r_offset); |
c629eae0 JJ |
1850 | if (outrel.r_offset == (bfd_vma) -1) |
1851 | skip = true; | |
0fb19cbc | 1852 | else if (outrel.r_offset == (bfd_vma) -2) |
0bb2d96a | 1853 | skip = true, relocate = true; |
70256ad8 AJ |
1854 | |
1855 | outrel.r_offset += (input_section->output_section->vma | |
1856 | + input_section->output_offset); | |
1857 | ||
1858 | if (skip) | |
0bb2d96a | 1859 | memset (&outrel, 0, sizeof outrel); |
c434dee6 | 1860 | |
fd8ab9e5 AJ |
1861 | /* h->dynindx may be -1 if this symbol was marked to |
1862 | become local. */ | |
1863 | else if (h != NULL | |
c434dee6 AJ |
1864 | && h->dynindx != -1 |
1865 | && (r_type == R_X86_64_PC8 | |
1866 | || r_type == R_X86_64_PC16 | |
1867 | || r_type == R_X86_64_PC32 | |
1868 | || !info->shared | |
1869 | || !info->symbolic | |
fd8ab9e5 AJ |
1870 | || (h->elf_link_hash_flags |
1871 | & ELF_LINK_HASH_DEF_REGULAR) == 0)) | |
70256ad8 | 1872 | { |
70256ad8 | 1873 | outrel.r_info = ELF64_R_INFO (h->dynindx, r_type); |
c434dee6 | 1874 | outrel.r_addend = rel->r_addend; |
70256ad8 AJ |
1875 | } |
1876 | else | |
1877 | { | |
c434dee6 | 1878 | /* This symbol is local, or marked to become local. */ |
607c0e09 AS |
1879 | if (r_type == R_X86_64_64) |
1880 | { | |
1881 | relocate = true; | |
1882 | outrel.r_info = ELF64_R_INFO (0, R_X86_64_RELATIVE); | |
1883 | outrel.r_addend = relocation + rel->r_addend; | |
1884 | } | |
1885 | else | |
1886 | { | |
1887 | long sindx; | |
1888 | ||
1889 | if (h == NULL) | |
1890 | sec = local_sections[r_symndx]; | |
1891 | else | |
1892 | { | |
1893 | BFD_ASSERT (h->root.type == bfd_link_hash_defined | |
1894 | || (h->root.type | |
1895 | == bfd_link_hash_defweak)); | |
1896 | sec = h->root.u.def.section; | |
1897 | } | |
1898 | if (sec != NULL && bfd_is_abs_section (sec)) | |
1899 | sindx = 0; | |
1900 | else if (sec == NULL || sec->owner == NULL) | |
1901 | { | |
1902 | bfd_set_error (bfd_error_bad_value); | |
1903 | return false; | |
1904 | } | |
1905 | else | |
1906 | { | |
1907 | asection *osec; | |
1908 | ||
1909 | osec = sec->output_section; | |
1910 | sindx = elf_section_data (osec)->dynindx; | |
1911 | BFD_ASSERT (sindx > 0); | |
1912 | } | |
1913 | ||
1914 | outrel.r_info = ELF64_R_INFO (sindx, r_type); | |
1915 | outrel.r_addend = relocation + rel->r_addend; | |
1916 | } | |
70256ad8 AJ |
1917 | } |
1918 | ||
c434dee6 AJ |
1919 | sreloc = elf_section_data (input_section)->sreloc; |
1920 | if (sreloc == NULL) | |
1921 | abort (); | |
1922 | ||
1923 | loc = (Elf64_External_Rela *) sreloc->contents; | |
1924 | loc += sreloc->reloc_count++; | |
1925 | bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc); | |
70256ad8 AJ |
1926 | |
1927 | /* If this reloc is against an external symbol, we do | |
1928 | not want to fiddle with the addend. Otherwise, we | |
1929 | need to include the symbol value so that it becomes | |
1930 | an addend for the dynamic reloc. */ | |
1931 | if (! relocate) | |
1932 | continue; | |
1933 | } | |
1934 | ||
1935 | break; | |
1936 | ||
1937 | default: | |
1938 | break; | |
1939 | } | |
8d88c4ca | 1940 | |
c434dee6 AJ |
1941 | /* FIXME: Why do we allow debugging sections to escape this error? |
1942 | More importantly, why do we not emit dynamic relocs for | |
1943 | R_386_32 above in debugging sections (which are ! SEC_ALLOC)? | |
1944 | If we had emitted the dynamic reloc, we could remove the | |
1945 | fudge here. */ | |
1946 | if (unresolved_reloc | |
1947 | && !(info->shared | |
1948 | && (input_section->flags & SEC_DEBUGGING) != 0 | |
1949 | && (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_DYNAMIC) != 0)) | |
1950 | (*_bfd_error_handler) | |
1951 | (_("%s(%s+0x%lx): unresolvable relocation against symbol `%s'"), | |
1952 | bfd_archive_filename (input_bfd), | |
1953 | bfd_get_section_name (input_bfd, input_section), | |
1954 | (long) rel->r_offset, | |
1955 | h->root.root.string); | |
1956 | ||
8d88c4ca | 1957 | r = _bfd_final_link_relocate (howto, input_bfd, input_section, |
c434dee6 AJ |
1958 | contents, rel->r_offset, |
1959 | relocation, rel->r_addend); | |
8d88c4ca NC |
1960 | |
1961 | if (r != bfd_reloc_ok) | |
8da6118f | 1962 | { |
c434dee6 AJ |
1963 | const char *name; |
1964 | ||
1965 | if (h != NULL) | |
1966 | name = h->root.root.string; | |
1967 | else | |
8da6118f | 1968 | { |
c434dee6 AJ |
1969 | name = bfd_elf_string_from_elf_section (input_bfd, |
1970 | symtab_hdr->sh_link, | |
1971 | sym->st_name); | |
1972 | if (name == NULL) | |
1973 | return false; | |
1974 | if (*name == '\0') | |
1975 | name = bfd_section_name (input_bfd, sec); | |
1976 | } | |
1977 | ||
1978 | if (r == bfd_reloc_overflow) | |
1979 | { | |
1980 | ||
1981 | if (! ((*info->callbacks->reloc_overflow) | |
1982 | (info, name, howto->name, (bfd_vma) 0, | |
1983 | input_bfd, input_section, rel->r_offset))) | |
1984 | return false; | |
1985 | } | |
1986 | else | |
1987 | { | |
1988 | (*_bfd_error_handler) | |
1989 | (_("%s(%s+0x%lx): reloc against `%s': error %d"), | |
1990 | bfd_archive_filename (input_bfd), | |
1991 | bfd_get_section_name (input_bfd, input_section), | |
1992 | (long) rel->r_offset, name, (int) r); | |
1993 | return false; | |
8da6118f KH |
1994 | } |
1995 | } | |
8d88c4ca | 1996 | } |
70256ad8 AJ |
1997 | |
1998 | return true; | |
1999 | } | |
2000 | ||
2001 | /* Finish up dynamic symbol handling. We set the contents of various | |
2002 | dynamic sections here. */ | |
2003 | ||
2004 | static boolean | |
2005 | elf64_x86_64_finish_dynamic_symbol (output_bfd, info, h, sym) | |
2006 | bfd *output_bfd; | |
2007 | struct bfd_link_info *info; | |
2008 | struct elf_link_hash_entry *h; | |
2009 | Elf_Internal_Sym *sym; | |
2010 | { | |
c434dee6 | 2011 | struct elf64_x86_64_link_hash_table *htab; |
70256ad8 | 2012 | |
c434dee6 | 2013 | htab = elf64_x86_64_hash_table (info); |
70256ad8 AJ |
2014 | |
2015 | if (h->plt.offset != (bfd_vma) -1) | |
2016 | { | |
70256ad8 AJ |
2017 | bfd_vma plt_index; |
2018 | bfd_vma got_offset; | |
2019 | Elf_Internal_Rela rela; | |
c434dee6 | 2020 | Elf64_External_Rela *loc; |
70256ad8 AJ |
2021 | |
2022 | /* This symbol has an entry in the procedure linkage table. Set | |
407443a3 | 2023 | it up. */ |
70256ad8 | 2024 | |
c434dee6 AJ |
2025 | if (h->dynindx == -1 |
2026 | || htab->splt == NULL | |
2027 | || htab->sgotplt == NULL | |
2028 | || htab->srelplt == NULL) | |
2029 | abort (); | |
70256ad8 AJ |
2030 | |
2031 | /* Get the index in the procedure linkage table which | |
2032 | corresponds to this symbol. This is the index of this symbol | |
2033 | in all the symbols for which we are making plt entries. The | |
2034 | first entry in the procedure linkage table is reserved. */ | |
2035 | plt_index = h->plt.offset / PLT_ENTRY_SIZE - 1; | |
2036 | ||
2037 | /* Get the offset into the .got table of the entry that | |
407443a3 | 2038 | corresponds to this function. Each .got entry is GOT_ENTRY_SIZE |
fe4770f4 | 2039 | bytes. The first three are reserved for the dynamic linker. */ |
70256ad8 AJ |
2040 | got_offset = (plt_index + 3) * GOT_ENTRY_SIZE; |
2041 | ||
2042 | /* Fill in the entry in the procedure linkage table. */ | |
c434dee6 | 2043 | memcpy (htab->splt->contents + h->plt.offset, elf64_x86_64_plt_entry, |
70256ad8 AJ |
2044 | PLT_ENTRY_SIZE); |
2045 | ||
2046 | /* Insert the relocation positions of the plt section. The magic | |
2047 | numbers at the end of the statements are the positions of the | |
2048 | relocations in the plt section. */ | |
653165cc AJ |
2049 | /* Put offset for jmp *name@GOTPCREL(%rip), since the |
2050 | instruction uses 6 bytes, subtract this value. */ | |
2051 | bfd_put_32 (output_bfd, | |
c434dee6 AJ |
2052 | (htab->sgotplt->output_section->vma |
2053 | + htab->sgotplt->output_offset | |
653165cc | 2054 | + got_offset |
c434dee6 AJ |
2055 | - htab->splt->output_section->vma |
2056 | - htab->splt->output_offset | |
653165cc AJ |
2057 | - h->plt.offset |
2058 | - 6), | |
c434dee6 | 2059 | htab->splt->contents + h->plt.offset + 2); |
653165cc AJ |
2060 | /* Put relocation index. */ |
2061 | bfd_put_32 (output_bfd, plt_index, | |
c434dee6 | 2062 | htab->splt->contents + h->plt.offset + 7); |
653165cc AJ |
2063 | /* Put offset for jmp .PLT0. */ |
2064 | bfd_put_32 (output_bfd, - (h->plt.offset + PLT_ENTRY_SIZE), | |
c434dee6 | 2065 | htab->splt->contents + h->plt.offset + 12); |
70256ad8 | 2066 | |
653165cc AJ |
2067 | /* Fill in the entry in the global offset table, initially this |
2068 | points to the pushq instruction in the PLT which is at offset 6. */ | |
c434dee6 AJ |
2069 | bfd_put_64 (output_bfd, (htab->splt->output_section->vma |
2070 | + htab->splt->output_offset | |
70256ad8 | 2071 | + h->plt.offset + 6), |
c434dee6 | 2072 | htab->sgotplt->contents + got_offset); |
70256ad8 AJ |
2073 | |
2074 | /* Fill in the entry in the .rela.plt section. */ | |
c434dee6 AJ |
2075 | rela.r_offset = (htab->sgotplt->output_section->vma |
2076 | + htab->sgotplt->output_offset | |
70256ad8 AJ |
2077 | + got_offset); |
2078 | rela.r_info = ELF64_R_INFO (h->dynindx, R_X86_64_JUMP_SLOT); | |
2079 | rela.r_addend = 0; | |
c434dee6 AJ |
2080 | loc = (Elf64_External_Rela *) htab->srelplt->contents + plt_index; |
2081 | bfd_elf64_swap_reloca_out (output_bfd, &rela, loc); | |
70256ad8 AJ |
2082 | |
2083 | if ((h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) == 0) | |
2084 | { | |
2085 | /* Mark the symbol as undefined, rather than as defined in | |
c434dee6 AJ |
2086 | the .plt section. Leave the value alone. This is a clue |
2087 | for the dynamic linker, to make function pointer | |
2088 | comparisons work between an application and shared | |
2089 | library. */ | |
70256ad8 AJ |
2090 | sym->st_shndx = SHN_UNDEF; |
2091 | } | |
2092 | } | |
2093 | ||
053579d7 AJ |
2094 | if (h->got.offset != (bfd_vma) -1) |
2095 | { | |
053579d7 | 2096 | Elf_Internal_Rela rela; |
c434dee6 | 2097 | Elf64_External_Rela *loc; |
053579d7 AJ |
2098 | |
2099 | /* This symbol has an entry in the global offset table. Set it | |
2100 | up. */ | |
2101 | ||
c434dee6 AJ |
2102 | if (htab->sgot == NULL || htab->srelgot == NULL) |
2103 | abort (); | |
053579d7 | 2104 | |
c434dee6 AJ |
2105 | rela.r_offset = (htab->sgot->output_section->vma |
2106 | + htab->sgot->output_offset | |
dc810e39 | 2107 | + (h->got.offset &~ (bfd_vma) 1)); |
053579d7 AJ |
2108 | |
2109 | /* If this is a static link, or it is a -Bsymbolic link and the | |
2110 | symbol is defined locally or was forced to be local because | |
2111 | of a version file, we just want to emit a RELATIVE reloc. | |
2112 | The entry in the global offset table will already have been | |
2113 | initialized in the relocate_section function. */ | |
c434dee6 AJ |
2114 | if (info->shared |
2115 | && (info->symbolic | |
2116 | || h->dynindx == -1 | |
2117 | || (h->elf_link_hash_flags & ELF_LINK_FORCED_LOCAL)) | |
2118 | && (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR)) | |
053579d7 | 2119 | { |
cc78d0af | 2120 | BFD_ASSERT((h->got.offset & 1) != 0); |
053579d7 AJ |
2121 | rela.r_info = ELF64_R_INFO (0, R_X86_64_RELATIVE); |
2122 | rela.r_addend = (h->root.u.def.value | |
2123 | + h->root.u.def.section->output_section->vma | |
2124 | + h->root.u.def.section->output_offset); | |
2125 | } | |
2126 | else | |
2127 | { | |
2128 | BFD_ASSERT((h->got.offset & 1) == 0); | |
c434dee6 AJ |
2129 | bfd_put_64 (output_bfd, (bfd_vma) 0, |
2130 | htab->sgot->contents + h->got.offset); | |
053579d7 AJ |
2131 | rela.r_info = ELF64_R_INFO (h->dynindx, R_X86_64_GLOB_DAT); |
2132 | rela.r_addend = 0; | |
2133 | } | |
2134 | ||
c434dee6 AJ |
2135 | loc = (Elf64_External_Rela *) htab->srelgot->contents; |
2136 | loc += htab->srelgot->reloc_count++; | |
2137 | bfd_elf64_swap_reloca_out (output_bfd, &rela, loc); | |
053579d7 AJ |
2138 | } |
2139 | ||
70256ad8 AJ |
2140 | if ((h->elf_link_hash_flags & ELF_LINK_HASH_NEEDS_COPY) != 0) |
2141 | { | |
70256ad8 | 2142 | Elf_Internal_Rela rela; |
c434dee6 | 2143 | Elf64_External_Rela *loc; |
70256ad8 AJ |
2144 | |
2145 | /* This symbol needs a copy reloc. Set it up. */ | |
2146 | ||
c434dee6 AJ |
2147 | if (h->dynindx == -1 |
2148 | || (h->root.type != bfd_link_hash_defined | |
2149 | && h->root.type != bfd_link_hash_defweak) | |
2150 | || htab->srelbss == NULL) | |
2151 | abort (); | |
70256ad8 AJ |
2152 | |
2153 | rela.r_offset = (h->root.u.def.value | |
2154 | + h->root.u.def.section->output_section->vma | |
2155 | + h->root.u.def.section->output_offset); | |
2156 | rela.r_info = ELF64_R_INFO (h->dynindx, R_X86_64_COPY); | |
2157 | rela.r_addend = 0; | |
c434dee6 AJ |
2158 | loc = (Elf64_External_Rela *) htab->srelbss->contents; |
2159 | loc += htab->srelbss->reloc_count++; | |
2160 | bfd_elf64_swap_reloca_out (output_bfd, &rela, loc); | |
70256ad8 AJ |
2161 | } |
2162 | ||
2163 | /* Mark _DYNAMIC and _GLOBAL_OFFSET_TABLE_ as absolute. */ | |
2164 | if (strcmp (h->root.root.string, "_DYNAMIC") == 0 | |
2165 | || strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0) | |
2166 | sym->st_shndx = SHN_ABS; | |
2167 | ||
2168 | return true; | |
2169 | } | |
2170 | ||
c434dee6 AJ |
2171 | /* Used to decide how to sort relocs in an optimal manner for the |
2172 | dynamic linker, before writing them out. */ | |
2173 | ||
2174 | static enum elf_reloc_type_class | |
2175 | elf64_x86_64_reloc_type_class (rela) | |
2176 | const Elf_Internal_Rela *rela; | |
2177 | { | |
2178 | switch ((int) ELF64_R_TYPE (rela->r_info)) | |
2179 | { | |
2180 | case R_X86_64_RELATIVE: | |
2181 | return reloc_class_relative; | |
2182 | case R_X86_64_JUMP_SLOT: | |
2183 | return reloc_class_plt; | |
2184 | case R_X86_64_COPY: | |
2185 | return reloc_class_copy; | |
2186 | default: | |
2187 | return reloc_class_normal; | |
2188 | } | |
2189 | } | |
2190 | ||
70256ad8 AJ |
2191 | /* Finish up the dynamic sections. */ |
2192 | ||
2193 | static boolean | |
2194 | elf64_x86_64_finish_dynamic_sections (output_bfd, info) | |
2195 | bfd *output_bfd; | |
2196 | struct bfd_link_info *info; | |
2197 | { | |
c434dee6 | 2198 | struct elf64_x86_64_link_hash_table *htab; |
70256ad8 AJ |
2199 | bfd *dynobj; |
2200 | asection *sdyn; | |
70256ad8 | 2201 | |
c434dee6 AJ |
2202 | htab = elf64_x86_64_hash_table (info); |
2203 | dynobj = htab->elf.dynobj; | |
70256ad8 AJ |
2204 | sdyn = bfd_get_section_by_name (dynobj, ".dynamic"); |
2205 | ||
c434dee6 | 2206 | if (htab->elf.dynamic_sections_created) |
70256ad8 | 2207 | { |
70256ad8 AJ |
2208 | Elf64_External_Dyn *dyncon, *dynconend; |
2209 | ||
c434dee6 AJ |
2210 | if (sdyn == NULL || htab->sgot == NULL) |
2211 | abort (); | |
70256ad8 AJ |
2212 | |
2213 | dyncon = (Elf64_External_Dyn *) sdyn->contents; | |
2214 | dynconend = (Elf64_External_Dyn *) (sdyn->contents + sdyn->_raw_size); | |
2215 | for (; dyncon < dynconend; dyncon++) | |
2216 | { | |
2217 | Elf_Internal_Dyn dyn; | |
70256ad8 AJ |
2218 | asection *s; |
2219 | ||
2220 | bfd_elf64_swap_dyn_in (dynobj, dyncon, &dyn); | |
2221 | ||
2222 | switch (dyn.d_tag) | |
2223 | { | |
2224 | default: | |
053579d7 | 2225 | continue; |
70256ad8 AJ |
2226 | |
2227 | case DT_PLTGOT: | |
c434dee6 AJ |
2228 | dyn.d_un.d_ptr = htab->sgot->output_section->vma; |
2229 | break; | |
70256ad8 AJ |
2230 | |
2231 | case DT_JMPREL: | |
c434dee6 AJ |
2232 | dyn.d_un.d_ptr = htab->srelplt->output_section->vma; |
2233 | break; | |
70256ad8 | 2234 | |
c434dee6 AJ |
2235 | case DT_PLTRELSZ: |
2236 | s = htab->srelplt->output_section; | |
2237 | if (s->_cooked_size != 0) | |
2238 | dyn.d_un.d_val = s->_cooked_size; | |
2239 | else | |
2240 | dyn.d_un.d_val = s->_raw_size; | |
70256ad8 AJ |
2241 | break; |
2242 | ||
2243 | case DT_RELASZ: | |
c434dee6 AJ |
2244 | /* The procedure linkage table relocs (DT_JMPREL) should |
2245 | not be included in the overall relocs (DT_RELA). | |
2246 | Therefore, we override the DT_RELASZ entry here to | |
2247 | make it not include the JMPREL relocs. Since the | |
2248 | linker script arranges for .rela.plt to follow all | |
2249 | other relocation sections, we don't have to worry | |
2250 | about changing the DT_RELA entry. */ | |
2251 | if (htab->srelplt != NULL) | |
70256ad8 | 2252 | { |
c434dee6 AJ |
2253 | s = htab->srelplt->output_section; |
2254 | if (s->_cooked_size != 0) | |
2255 | dyn.d_un.d_val -= s->_cooked_size; | |
2256 | else | |
2257 | dyn.d_un.d_val -= s->_raw_size; | |
70256ad8 AJ |
2258 | } |
2259 | break; | |
70256ad8 | 2260 | } |
c434dee6 | 2261 | |
70256ad8 AJ |
2262 | bfd_elf64_swap_dyn_out (output_bfd, &dyn, dyncon); |
2263 | } | |
2264 | ||
c434dee6 AJ |
2265 | /* Fill in the special first entry in the procedure linkage table. */ |
2266 | if (htab->splt && htab->splt->_raw_size > 0) | |
70256ad8 | 2267 | { |
653165cc | 2268 | /* Fill in the first entry in the procedure linkage table. */ |
c434dee6 AJ |
2269 | memcpy (htab->splt->contents, elf64_x86_64_plt0_entry, |
2270 | PLT_ENTRY_SIZE); | |
653165cc AJ |
2271 | /* Add offset for pushq GOT+8(%rip), since the instruction |
2272 | uses 6 bytes subtract this value. */ | |
2273 | bfd_put_32 (output_bfd, | |
c434dee6 AJ |
2274 | (htab->sgotplt->output_section->vma |
2275 | + htab->sgotplt->output_offset | |
653165cc | 2276 | + 8 |
c434dee6 AJ |
2277 | - htab->splt->output_section->vma |
2278 | - htab->splt->output_offset | |
653165cc | 2279 | - 6), |
c434dee6 | 2280 | htab->splt->contents + 2); |
653165cc AJ |
2281 | /* Add offset for jmp *GOT+16(%rip). The 12 is the offset to |
2282 | the end of the instruction. */ | |
2283 | bfd_put_32 (output_bfd, | |
c434dee6 AJ |
2284 | (htab->sgotplt->output_section->vma |
2285 | + htab->sgotplt->output_offset | |
653165cc | 2286 | + 16 |
c434dee6 AJ |
2287 | - htab->splt->output_section->vma |
2288 | - htab->splt->output_offset | |
653165cc | 2289 | - 12), |
c434dee6 | 2290 | htab->splt->contents + 8); |
653165cc | 2291 | |
c434dee6 AJ |
2292 | elf_section_data (htab->splt->output_section)->this_hdr.sh_entsize = |
2293 | PLT_ENTRY_SIZE; | |
70256ad8 | 2294 | } |
70256ad8 AJ |
2295 | } |
2296 | ||
c434dee6 | 2297 | if (htab->sgotplt) |
70256ad8 | 2298 | { |
c434dee6 AJ |
2299 | /* Fill in the first three entries in the global offset table. */ |
2300 | if (htab->sgotplt->_raw_size > 0) | |
2301 | { | |
2302 | /* Set the first entry in the global offset table to the address of | |
2303 | the dynamic section. */ | |
2304 | if (sdyn == NULL) | |
2305 | bfd_put_64 (output_bfd, (bfd_vma) 0, htab->sgotplt->contents); | |
2306 | else | |
2307 | bfd_put_64 (output_bfd, | |
2308 | sdyn->output_section->vma + sdyn->output_offset, | |
2309 | htab->sgotplt->contents); | |
2310 | /* Write GOT[1] and GOT[2], needed for the dynamic linker. */ | |
2311 | bfd_put_64 (output_bfd, (bfd_vma) 0, htab->sgotplt->contents + GOT_ENTRY_SIZE); | |
2312 | bfd_put_64 (output_bfd, (bfd_vma) 0, htab->sgotplt->contents + GOT_ENTRY_SIZE*2); | |
2313 | } | |
70256ad8 | 2314 | |
c434dee6 AJ |
2315 | elf_section_data (htab->sgotplt->output_section)->this_hdr.sh_entsize = |
2316 | GOT_ENTRY_SIZE; | |
2317 | } | |
70256ad8 | 2318 | |
8d88c4ca NC |
2319 | return true; |
2320 | } | |
2321 | ||
8df9fc9d | 2322 | |
70256ad8 AJ |
2323 | #define TARGET_LITTLE_SYM bfd_elf64_x86_64_vec |
2324 | #define TARGET_LITTLE_NAME "elf64-x86-64" | |
2325 | #define ELF_ARCH bfd_arch_i386 | |
2326 | #define ELF_MACHINE_CODE EM_X86_64 | |
2327 | #define ELF_MAXPAGESIZE 0x100000 | |
2328 | ||
2329 | #define elf_backend_can_gc_sections 1 | |
51b64d56 | 2330 | #define elf_backend_can_refcount 1 |
70256ad8 AJ |
2331 | #define elf_backend_want_got_plt 1 |
2332 | #define elf_backend_plt_readonly 1 | |
2333 | #define elf_backend_want_plt_sym 0 | |
2334 | #define elf_backend_got_header_size (GOT_ENTRY_SIZE*3) | |
2335 | #define elf_backend_plt_header_size PLT_ENTRY_SIZE | |
b491616a | 2336 | #define elf_backend_rela_normal 1 |
70256ad8 AJ |
2337 | |
2338 | #define elf_info_to_howto elf64_x86_64_info_to_howto | |
70256ad8 | 2339 | |
70256ad8 AJ |
2340 | #define bfd_elf64_bfd_link_hash_table_create \ |
2341 | elf64_x86_64_link_hash_table_create | |
407443a3 | 2342 | #define bfd_elf64_bfd_reloc_type_lookup elf64_x86_64_reloc_type_lookup |
70256ad8 AJ |
2343 | |
2344 | #define elf_backend_adjust_dynamic_symbol elf64_x86_64_adjust_dynamic_symbol | |
2345 | #define elf_backend_check_relocs elf64_x86_64_check_relocs | |
c434dee6 AJ |
2346 | #define elf_backend_copy_indirect_symbol elf64_x86_64_copy_indirect_symbol |
2347 | #define elf_backend_create_dynamic_sections elf64_x86_64_create_dynamic_sections | |
2348 | #define elf_backend_finish_dynamic_sections elf64_x86_64_finish_dynamic_sections | |
70256ad8 AJ |
2349 | #define elf_backend_finish_dynamic_symbol elf64_x86_64_finish_dynamic_symbol |
2350 | #define elf_backend_gc_mark_hook elf64_x86_64_gc_mark_hook | |
2351 | #define elf_backend_gc_sweep_hook elf64_x86_64_gc_sweep_hook | |
3bab7989 ML |
2352 | #define elf_backend_grok_prstatus elf64_x86_64_grok_prstatus |
2353 | #define elf_backend_grok_psinfo elf64_x86_64_grok_psinfo | |
c434dee6 | 2354 | #define elf_backend_reloc_type_class elf64_x86_64_reloc_type_class |
70256ad8 AJ |
2355 | #define elf_backend_relocate_section elf64_x86_64_relocate_section |
2356 | #define elf_backend_size_dynamic_sections elf64_x86_64_size_dynamic_sections | |
407443a3 | 2357 | #define elf_backend_object_p elf64_x86_64_elf_object_p |
8d88c4ca NC |
2358 | |
2359 | #include "elf64-target.h" |