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61ba1cf9 ILT |
1 | // target-reloc.h -- target specific relocation support -*- C++ -*- |
2 | ||
250d07de | 3 | // Copyright (C) 2006-2021 Free Software Foundation, Inc. |
6cb15b7f ILT |
4 | // Written by Ian Lance Taylor <iant@google.com>. |
5 | ||
6 | // This file is part of gold. | |
7 | ||
8 | // This program is free software; you can redistribute it and/or modify | |
9 | // it under the terms of the GNU General Public License as published by | |
10 | // the Free Software Foundation; either version 3 of the License, or | |
11 | // (at your option) any later version. | |
12 | ||
13 | // This program is distributed in the hope that it will be useful, | |
14 | // but WITHOUT ANY WARRANTY; without even the implied warranty of | |
15 | // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
16 | // GNU General Public License for more details. | |
17 | ||
18 | // You should have received a copy of the GNU General Public License | |
19 | // along with this program; if not, write to the Free Software | |
20 | // Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, | |
21 | // MA 02110-1301, USA. | |
22 | ||
61ba1cf9 ILT |
23 | #ifndef GOLD_TARGET_RELOC_H |
24 | #define GOLD_TARGET_RELOC_H | |
25 | ||
26 | #include "elfcpp.h" | |
27 | #include "symtab.h" | |
364c7fa5 | 28 | #include "object.h" |
6a74a719 | 29 | #include "reloc.h" |
c06b7b0b | 30 | #include "reloc-types.h" |
61ba1cf9 ILT |
31 | |
32 | namespace gold | |
33 | { | |
34 | ||
6a74a719 ILT |
35 | // This function implements the generic part of reloc scanning. The |
36 | // template parameter Scan must be a class type which provides two | |
37 | // functions: local() and global(). Those functions implement the | |
38 | // machine specific part of scanning. We do it this way to | |
9b547ce6 | 39 | // avoid making a function call for each relocation, and to avoid |
6a74a719 | 40 | // repeating the generic code for each target. |
92e059d8 | 41 | |
4d625b70 CC |
42 | template<int size, bool big_endian, typename Target_type, |
43 | typename Scan, typename Classify_reloc> | |
92e059d8 ILT |
44 | inline void |
45 | scan_relocs( | |
92e059d8 | 46 | Symbol_table* symtab, |
ead1e424 ILT |
47 | Layout* layout, |
48 | Target_type* target, | |
6fa2a40b | 49 | Sized_relobj_file<size, big_endian>* object, |
a3ad94ed | 50 | unsigned int data_shndx, |
92e059d8 ILT |
51 | const unsigned char* prelocs, |
52 | size_t reloc_count, | |
730cdc88 ILT |
53 | Output_section* output_section, |
54 | bool needs_special_offset_handling, | |
92e059d8 | 55 | size_t local_count, |
730cdc88 | 56 | const unsigned char* plocal_syms) |
92e059d8 | 57 | { |
4d625b70 CC |
58 | typedef typename Classify_reloc::Reltype Reltype; |
59 | const int reloc_size = Classify_reloc::reloc_size; | |
92e059d8 ILT |
60 | const int sym_size = elfcpp::Elf_sizes<size>::sym_size; |
61 | Scan scan; | |
62 | ||
63 | for (size_t i = 0; i < reloc_count; ++i, prelocs += reloc_size) | |
64 | { | |
65 | Reltype reloc(prelocs); | |
66 | ||
730cdc88 ILT |
67 | if (needs_special_offset_handling |
68 | && !output_section->is_input_address_mapped(object, data_shndx, | |
69 | reloc.get_r_offset())) | |
70 | continue; | |
71 | ||
4d625b70 CC |
72 | unsigned int r_sym = Classify_reloc::get_r_sym(&reloc); |
73 | unsigned int r_type = Classify_reloc::get_r_type(&reloc); | |
92e059d8 ILT |
74 | |
75 | if (r_sym < local_count) | |
76 | { | |
a3ad94ed | 77 | gold_assert(plocal_syms != NULL); |
92e059d8 ILT |
78 | typename elfcpp::Sym<size, big_endian> lsym(plocal_syms |
79 | + r_sym * sym_size); | |
d491d34e ILT |
80 | unsigned int shndx = lsym.get_st_shndx(); |
81 | bool is_ordinary; | |
82 | shndx = object->adjust_sym_shndx(r_sym, shndx, &is_ordinary); | |
bfdfa4cd AM |
83 | // If RELOC is a relocation against a local symbol in a |
84 | // section we are discarding then we can ignore it. It will | |
85 | // eventually become a reloc against the value zero. | |
86 | // | |
87 | // FIXME: We should issue a warning if this is an | |
88 | // allocated section; is this the best place to do it? | |
62fe925a | 89 | // |
bfdfa4cd AM |
90 | // FIXME: The old GNU linker would in some cases look |
91 | // for the linkonce section which caused this section to | |
92 | // be discarded, and, if the other section was the same | |
93 | // size, change the reloc to refer to the other section. | |
94 | // That seems risky and weird to me, and I don't know of | |
95 | // any case where it is actually required. | |
96 | bool is_discarded = (is_ordinary | |
97 | && shndx != elfcpp::SHN_UNDEF | |
98 | && !object->is_section_included(shndx) | |
99 | && !symtab->is_section_folded(object, shndx)); | |
ad0f2072 | 100 | scan.local(symtab, layout, target, object, data_shndx, |
bfdfa4cd | 101 | output_section, reloc, r_type, lsym, is_discarded); |
92e059d8 ILT |
102 | } |
103 | else | |
104 | { | |
730cdc88 | 105 | Symbol* gsym = object->global_symbol(r_sym); |
a3ad94ed | 106 | gold_assert(gsym != NULL); |
92e059d8 ILT |
107 | if (gsym->is_forwarder()) |
108 | gsym = symtab->resolve_forwards(gsym); | |
109 | ||
ad0f2072 | 110 | scan.global(symtab, layout, target, object, data_shndx, |
07f397ab | 111 | output_section, reloc, r_type, gsym); |
92e059d8 ILT |
112 | } |
113 | } | |
114 | } | |
115 | ||
e94cf127 CC |
116 | // Behavior for relocations to discarded comdat sections. |
117 | ||
118 | enum Comdat_behavior | |
119 | { | |
120 | CB_UNDETERMINED, // Not yet determined -- need to look at section name. | |
121 | CB_PRETEND, // Attempt to map to the corresponding kept section. | |
122 | CB_IGNORE, // Ignore the relocation. | |
43193fe9 | 123 | CB_ERROR // Print an error. |
e94cf127 CC |
124 | }; |
125 | ||
168a4726 | 126 | class Default_comdat_behavior |
e94cf127 | 127 | { |
168a4726 AM |
128 | public: |
129 | // Decide what the linker should do for relocations that refer to | |
130 | // discarded comdat sections. This decision is based on the name of | |
131 | // the section being relocated. | |
132 | ||
133 | inline Comdat_behavior | |
134 | get(const char* name) | |
135 | { | |
136 | if (Layout::is_debug_info_section(name)) | |
137 | return CB_PRETEND; | |
138 | if (strcmp(name, ".eh_frame") == 0 | |
4ac3fa49 | 139 | || is_prefix_of (".gnu.build.attributes", name) |
168a4726 AM |
140 | || strcmp(name, ".gcc_except_table") == 0) |
141 | return CB_IGNORE; | |
43193fe9 | 142 | return CB_ERROR; |
168a4726 AM |
143 | } |
144 | }; | |
e94cf127 | 145 | |
837504c4 ILT |
146 | // Give an error for a symbol with non-default visibility which is not |
147 | // defined locally. | |
148 | ||
149 | inline void | |
150 | visibility_error(const Symbol* sym) | |
151 | { | |
152 | const char* v; | |
153 | switch (sym->visibility()) | |
154 | { | |
155 | case elfcpp::STV_INTERNAL: | |
156 | v = _("internal"); | |
157 | break; | |
158 | case elfcpp::STV_HIDDEN: | |
159 | v = _("hidden"); | |
160 | break; | |
161 | case elfcpp::STV_PROTECTED: | |
162 | v = _("protected"); | |
163 | break; | |
164 | default: | |
165 | gold_unreachable(); | |
166 | } | |
167 | gold_error(_("%s symbol '%s' is not defined locally"), | |
168 | v, sym->name()); | |
169 | } | |
170 | ||
191f1a2d ILT |
171 | // Return true if we are should issue an error saying that SYM is an |
172 | // undefined symbol. This is called if there is a relocation against | |
173 | // SYM. | |
174 | ||
175 | inline bool | |
176 | issue_undefined_symbol_error(const Symbol* sym) | |
177 | { | |
beabb2c6 ILT |
178 | // We only report global symbols. |
179 | if (sym == NULL) | |
180 | return false; | |
181 | ||
182 | // We only report undefined symbols. | |
183 | if (!sym->is_undefined() && !sym->is_placeholder()) | |
184 | return false; | |
185 | ||
186 | // We don't report weak symbols. | |
d1bddd3c | 187 | if (sym->is_weak_undefined()) |
beabb2c6 ILT |
188 | return false; |
189 | ||
648c5cbb CC |
190 | // We don't report symbols defined in discarded sections, |
191 | // unless they're placeholder symbols that should have been | |
192 | // provided by a plugin. | |
193 | if (sym->is_defined_in_discarded_section() && !sym->is_placeholder()) | |
beabb2c6 ILT |
194 | return false; |
195 | ||
196 | // If the target defines this symbol, don't report it here. | |
197 | if (parameters->target().is_defined_by_abi(sym)) | |
198 | return false; | |
199 | ||
200 | // See if we've been told to ignore whether this symbol is | |
201 | // undefined. | |
202 | const char* const u = parameters->options().unresolved_symbols(); | |
203 | if (u != NULL) | |
204 | { | |
205 | if (strcmp(u, "ignore-all") == 0) | |
206 | return false; | |
e2153196 ILT |
207 | if (strcmp(u, "report-all") == 0) |
208 | return true; | |
beabb2c6 ILT |
209 | if (strcmp(u, "ignore-in-object-files") == 0 && !sym->in_dyn()) |
210 | return false; | |
211 | if (strcmp(u, "ignore-in-shared-libs") == 0 && !sym->in_reg()) | |
212 | return false; | |
213 | } | |
214 | ||
d1bddd3c CC |
215 | // If the symbol is hidden, report it. |
216 | if (sym->visibility() == elfcpp::STV_HIDDEN) | |
217 | return true; | |
218 | ||
beabb2c6 ILT |
219 | // When creating a shared library, only report unresolved symbols if |
220 | // -z defs was used. | |
221 | if (parameters->options().shared() && !parameters->options().defs()) | |
222 | return false; | |
223 | ||
224 | // Otherwise issue a warning. | |
225 | return true; | |
191f1a2d ILT |
226 | } |
227 | ||
43193fe9 CC |
228 | template<int size, bool big_endian> |
229 | inline void | |
230 | issue_discarded_error( | |
231 | const Relocate_info<size, big_endian>* relinfo, | |
232 | size_t shndx, | |
233 | section_offset_type offset, | |
234 | unsigned int r_sym, | |
235 | const Symbol* gsym) | |
236 | { | |
237 | Sized_relobj_file<size, big_endian>* object = relinfo->object; | |
238 | ||
239 | if (gsym == NULL) | |
240 | { | |
241 | gold_error_at_location( | |
242 | relinfo, shndx, offset, | |
243 | _("relocation refers to local symbol \"%s\" [%u], " | |
244 | "which is defined in a discarded section"), | |
245 | object->get_symbol_name(r_sym), r_sym); | |
246 | } | |
247 | else | |
248 | { | |
249 | gold_error_at_location( | |
250 | relinfo, shndx, offset, | |
251 | _("relocation refers to global symbol \"%s\", " | |
252 | "which is defined in a discarded section"), | |
253 | gsym->demangled_name().c_str()); | |
254 | } | |
255 | ||
256 | bool is_ordinary; | |
257 | typename elfcpp::Elf_types<size>::Elf_Addr value; | |
258 | unsigned int orig_shndx = object->symbol_section_and_value(r_sym, &value, | |
259 | &is_ordinary); | |
260 | if (orig_shndx != elfcpp::SHN_UNDEF) | |
261 | { | |
fb58f5e9 | 262 | unsigned int key_symndx = 0; |
43193fe9 CC |
263 | Relobj* kept_obj = object->find_kept_section_object(orig_shndx, |
264 | &key_symndx); | |
265 | if (key_symndx != 0) | |
266 | gold_info(_(" section group signature: \"%s\""), | |
267 | object->get_symbol_name(key_symndx)); | |
268 | if (kept_obj != NULL) | |
269 | gold_info(_(" prevailing definition is from %s"), | |
270 | kept_obj->name().c_str()); | |
271 | } | |
272 | } | |
273 | ||
92e059d8 | 274 | // This function implements the generic part of relocation processing. |
6a74a719 ILT |
275 | // The template parameter Relocate must be a class type which provides |
276 | // a single function, relocate(), which implements the machine | |
277 | // specific part of a relocation. | |
61ba1cf9 | 278 | |
168a4726 AM |
279 | // The template parameter Relocate_comdat_behavior is a class type |
280 | // which provides a single function, get(), which determines what the | |
281 | // linker should do for relocations that refer to discarded comdat | |
282 | // sections. | |
283 | ||
61ba1cf9 | 284 | // SIZE is the ELF size: 32 or 64. BIG_ENDIAN is the endianness of |
92e059d8 ILT |
285 | // the data. SH_TYPE is the section type: SHT_REL or SHT_RELA. |
286 | // RELOCATE implements operator() to do a relocation. | |
61ba1cf9 | 287 | |
92e059d8 | 288 | // PRELOCS points to the relocation data. RELOC_COUNT is the number |
730cdc88 ILT |
289 | // of relocs. OUTPUT_SECTION is the output section. |
290 | // NEEDS_SPECIAL_OFFSET_HANDLING is true if input offsets need to be | |
291 | // mapped to output offsets. | |
292 | ||
293 | // VIEW is the section data, VIEW_ADDRESS is its memory address, and | |
294 | // VIEW_SIZE is the size. These refer to the input section, unless | |
295 | // NEEDS_SPECIAL_OFFSET_HANDLING is true, in which case they refer to | |
296 | // the output section. | |
61ba1cf9 | 297 | |
364c7fa5 ILT |
298 | // RELOC_SYMBOL_CHANGES is used for -fsplit-stack support. If it is |
299 | // not NULL, it is a vector indexed by relocation index. If that | |
300 | // entry is not NULL, it points to a global symbol which used as the | |
301 | // symbol for the relocation, ignoring the symbol index in the | |
302 | // relocation. | |
303 | ||
4d625b70 | 304 | template<int size, bool big_endian, typename Target_type, |
168a4726 | 305 | typename Relocate, |
4d625b70 CC |
306 | typename Relocate_comdat_behavior, |
307 | typename Classify_reloc> | |
61ba1cf9 ILT |
308 | inline void |
309 | relocate_section( | |
92e059d8 | 310 | const Relocate_info<size, big_endian>* relinfo, |
ead1e424 | 311 | Target_type* target, |
61ba1cf9 ILT |
312 | const unsigned char* prelocs, |
313 | size_t reloc_count, | |
730cdc88 ILT |
314 | Output_section* output_section, |
315 | bool needs_special_offset_handling, | |
61ba1cf9 ILT |
316 | unsigned char* view, |
317 | typename elfcpp::Elf_types<size>::Elf_Addr view_address, | |
364c7fa5 ILT |
318 | section_size_type view_size, |
319 | const Reloc_symbol_changes* reloc_symbol_changes) | |
61ba1cf9 | 320 | { |
4d625b70 CC |
321 | typedef typename Classify_reloc::Reltype Reltype; |
322 | const int reloc_size = Classify_reloc::reloc_size; | |
61ba1cf9 | 323 | Relocate relocate; |
168a4726 | 324 | Relocate_comdat_behavior relocate_comdat_behavior; |
61ba1cf9 | 325 | |
6fa2a40b | 326 | Sized_relobj_file<size, big_endian>* object = relinfo->object; |
730cdc88 | 327 | unsigned int local_count = object->local_symbol_count(); |
92e059d8 | 328 | |
e94cf127 CC |
329 | Comdat_behavior comdat_behavior = CB_UNDETERMINED; |
330 | ||
61ba1cf9 ILT |
331 | for (size_t i = 0; i < reloc_count; ++i, prelocs += reloc_size) |
332 | { | |
333 | Reltype reloc(prelocs); | |
334 | ||
fe8718a4 ILT |
335 | section_offset_type offset = |
336 | convert_to_section_size_type(reloc.get_r_offset()); | |
61ba1cf9 | 337 | |
730cdc88 ILT |
338 | if (needs_special_offset_handling) |
339 | { | |
340 | offset = output_section->output_offset(relinfo->object, | |
341 | relinfo->data_shndx, | |
342 | offset); | |
343 | if (offset == -1) | |
344 | continue; | |
345 | } | |
346 | ||
4d625b70 | 347 | unsigned int r_sym = Classify_reloc::get_r_sym(&reloc); |
61ba1cf9 | 348 | |
c06b7b0b | 349 | const Sized_symbol<size>* sym; |
61ba1cf9 | 350 | |
b8e6aad9 ILT |
351 | Symbol_value<size> symval; |
352 | const Symbol_value<size> *psymval; | |
880cd20d ILT |
353 | bool is_defined_in_discarded_section; |
354 | unsigned int shndx; | |
c54b27d1 | 355 | const Symbol* gsym = NULL; |
364c7fa5 ILT |
356 | if (r_sym < local_count |
357 | && (reloc_symbol_changes == NULL | |
358 | || (*reloc_symbol_changes)[i] == NULL)) | |
61ba1cf9 ILT |
359 | { |
360 | sym = NULL; | |
730cdc88 | 361 | psymval = object->local_symbol(r_sym); |
e94cf127 CC |
362 | |
363 | // If the local symbol belongs to a section we are discarding, | |
364 | // and that section is a debug section, try to find the | |
365 | // corresponding kept section and map this symbol to its | |
62fe925a | 366 | // counterpart in the kept section. The symbol must not |
ef15dade | 367 | // correspond to a section we are folding. |
e94cf127 | 368 | bool is_ordinary; |
880cd20d ILT |
369 | shndx = psymval->input_shndx(&is_ordinary); |
370 | is_defined_in_discarded_section = | |
371 | (is_ordinary | |
372 | && shndx != elfcpp::SHN_UNDEF | |
373 | && !object->is_section_included(shndx) | |
374 | && !relinfo->symtab->is_section_folded(object, shndx)); | |
61ba1cf9 ILT |
375 | } |
376 | else | |
377 | { | |
364c7fa5 ILT |
378 | if (reloc_symbol_changes != NULL |
379 | && (*reloc_symbol_changes)[i] != NULL) | |
380 | gsym = (*reloc_symbol_changes)[i]; | |
381 | else | |
382 | { | |
383 | gsym = object->global_symbol(r_sym); | |
384 | gold_assert(gsym != NULL); | |
385 | if (gsym->is_forwarder()) | |
386 | gsym = relinfo->symtab->resolve_forwards(gsym); | |
387 | } | |
61ba1cf9 | 388 | |
c06b7b0b | 389 | sym = static_cast<const Sized_symbol<size>*>(gsym); |
d3bbad62 | 390 | if (sym->has_symtab_index() && sym->symtab_index() != -1U) |
b8e6aad9 ILT |
391 | symval.set_output_symtab_index(sym->symtab_index()); |
392 | else | |
393 | symval.set_no_output_symtab_entry(); | |
394 | symval.set_output_value(sym->value()); | |
7223e9ca ILT |
395 | if (gsym->type() == elfcpp::STT_TLS) |
396 | symval.set_is_tls_symbol(); | |
397 | else if (gsym->type() == elfcpp::STT_GNU_IFUNC) | |
398 | symval.set_is_ifunc_symbol(); | |
b8e6aad9 | 399 | psymval = &symval; |
880cd20d ILT |
400 | |
401 | is_defined_in_discarded_section = | |
402 | (gsym->is_defined_in_discarded_section() | |
403 | && gsym->is_undefined()); | |
404 | shndx = 0; | |
405 | } | |
406 | ||
407 | Symbol_value<size> symval2; | |
408 | if (is_defined_in_discarded_section) | |
409 | { | |
43193fe9 CC |
410 | std::string name = object->section_name(relinfo->data_shndx); |
411 | ||
880cd20d | 412 | if (comdat_behavior == CB_UNDETERMINED) |
168a4726 | 413 | comdat_behavior = relocate_comdat_behavior.get(name.c_str()); |
43193fe9 | 414 | |
880cd20d ILT |
415 | if (comdat_behavior == CB_PRETEND) |
416 | { | |
417 | // FIXME: This case does not work for global symbols. | |
418 | // We have no place to store the original section index. | |
419 | // Fortunately this does not matter for comdat sections, | |
420 | // only for sections explicitly discarded by a linker | |
421 | // script. | |
422 | bool found; | |
423 | typename elfcpp::Elf_types<size>::Elf_Addr value = | |
43193fe9 | 424 | object->map_to_kept_section(shndx, name, &found); |
880cd20d ILT |
425 | if (found) |
426 | symval2.set_output_value(value + psymval->input_value()); | |
427 | else | |
428 | symval2.set_output_value(0); | |
429 | } | |
430 | else | |
431 | { | |
43193fe9 CC |
432 | if (comdat_behavior == CB_ERROR) |
433 | issue_discarded_error(relinfo, i, offset, r_sym, gsym); | |
880cd20d ILT |
434 | symval2.set_output_value(0); |
435 | } | |
436 | symval2.set_no_output_symtab_entry(); | |
437 | psymval = &symval2; | |
ead1e424 | 438 | } |
61ba1cf9 | 439 | |
0e804863 ILT |
440 | // If OFFSET is out of range, still let the target decide to |
441 | // ignore the relocation. Pass in NULL as the VIEW argument so | |
442 | // that it can return quickly without trashing an invalid memory | |
443 | // address. | |
444 | unsigned char *v = view + offset; | |
445 | if (offset < 0 || static_cast<section_size_type>(offset) >= view_size) | |
446 | v = NULL; | |
447 | ||
4d625b70 CC |
448 | if (!relocate.relocate(relinfo, Classify_reloc::sh_type, target, |
449 | output_section, i, prelocs, sym, psymval, | |
91a65d2f | 450 | v, view_address + offset, view_size)) |
ead1e424 ILT |
451 | continue; |
452 | ||
0e804863 | 453 | if (v == NULL) |
ead1e424 | 454 | { |
75f2446e ILT |
455 | gold_error_at_location(relinfo, i, offset, |
456 | _("reloc has bad offset %zu"), | |
457 | static_cast<size_t>(offset)); | |
458 | continue; | |
61ba1cf9 ILT |
459 | } |
460 | ||
191f1a2d | 461 | if (issue_undefined_symbol_error(sym)) |
1a221d3d | 462 | gold_undefined_symbol_at_location(sym, relinfo, i, offset); |
837504c4 ILT |
463 | else if (sym != NULL |
464 | && sym->visibility() != elfcpp::STV_DEFAULT | |
d1bddd3c | 465 | && (sym->is_strong_undefined() || sym->is_from_dynobj())) |
837504c4 | 466 | visibility_error(sym); |
f6ce93d6 ILT |
467 | |
468 | if (sym != NULL && sym->has_warning()) | |
75f2446e | 469 | relinfo->symtab->issue_warning(sym, relinfo, i, offset); |
61ba1cf9 ILT |
470 | } |
471 | } | |
472 | ||
94a3fc8b CC |
473 | // Apply an incremental relocation. |
474 | ||
475 | template<int size, bool big_endian, typename Target_type, | |
476 | typename Relocate> | |
477 | void | |
478 | apply_relocation(const Relocate_info<size, big_endian>* relinfo, | |
479 | Target_type* target, | |
480 | typename elfcpp::Elf_types<size>::Elf_Addr r_offset, | |
481 | unsigned int r_type, | |
482 | typename elfcpp::Elf_types<size>::Elf_Swxword r_addend, | |
483 | const Symbol* gsym, | |
484 | unsigned char* view, | |
485 | typename elfcpp::Elf_types<size>::Elf_Addr address, | |
486 | section_size_type view_size) | |
487 | { | |
488 | // Construct the ELF relocation in a temporary buffer. | |
d55525b9 | 489 | const int reloc_size = elfcpp::Elf_sizes<size>::rela_size; |
94a3fc8b | 490 | unsigned char relbuf[reloc_size]; |
d55525b9 | 491 | elfcpp::Rela_write<size, big_endian> orel(relbuf); |
94a3fc8b | 492 | orel.put_r_offset(r_offset); |
d55525b9 | 493 | orel.put_r_info(elfcpp::elf_r_info<size>(0, r_type)); |
94a3fc8b CC |
494 | orel.put_r_addend(r_addend); |
495 | ||
496 | // Setup a Symbol_value for the global symbol. | |
d55525b9 L |
497 | const Sized_symbol<size>* sym = static_cast<const Sized_symbol<size>*>(gsym); |
498 | Symbol_value<size> symval; | |
94a3fc8b CC |
499 | gold_assert(sym->has_symtab_index() && sym->symtab_index() != -1U); |
500 | symval.set_output_symtab_index(sym->symtab_index()); | |
501 | symval.set_output_value(sym->value()); | |
502 | if (gsym->type() == elfcpp::STT_TLS) | |
503 | symval.set_is_tls_symbol(); | |
504 | else if (gsym->type() == elfcpp::STT_GNU_IFUNC) | |
505 | symval.set_is_ifunc_symbol(); | |
506 | ||
507 | Relocate relocate; | |
91a65d2f AM |
508 | relocate.relocate(relinfo, elfcpp::SHT_RELA, target, NULL, |
509 | -1U, relbuf, sym, &symval, | |
94a3fc8b CC |
510 | view + r_offset, address + r_offset, view_size); |
511 | } | |
512 | ||
4d625b70 CC |
513 | // A class for inquiring about properties of a relocation, |
514 | // used while scanning relocs during a relocatable link and | |
515 | // garbage collection. This class may be used as the default | |
516 | // for SHT_RELA targets, but SHT_REL targets must implement | |
517 | // a derived class that overrides get_size_for_reloc. | |
518 | // The MIPS-64 target also needs to override the methods | |
519 | // for accessing the r_sym and r_type fields of a relocation, | |
520 | // due to its non-standard use of the r_info field. | |
521 | ||
522 | template<int sh_type_, int size, bool big_endian> | |
523 | class Default_classify_reloc | |
524 | { | |
525 | public: | |
526 | typedef typename Reloc_types<sh_type_, size, big_endian>::Reloc | |
527 | Reltype; | |
528 | typedef typename Reloc_types<sh_type_, size, big_endian>::Reloc_write | |
529 | Reltype_write; | |
530 | static const int reloc_size = | |
531 | Reloc_types<sh_type_, size, big_endian>::reloc_size; | |
532 | static const int sh_type = sh_type_; | |
533 | ||
534 | // Return the symbol referred to by the relocation. | |
535 | static inline unsigned int | |
536 | get_r_sym(const Reltype* reloc) | |
537 | { return elfcpp::elf_r_sym<size>(reloc->get_r_info()); } | |
538 | ||
539 | // Return the type of the relocation. | |
540 | static inline unsigned int | |
541 | get_r_type(const Reltype* reloc) | |
542 | { return elfcpp::elf_r_type<size>(reloc->get_r_info()); } | |
543 | ||
544 | // Return the explicit addend of the relocation (return 0 for SHT_REL). | |
545 | static inline typename elfcpp::Elf_types<size>::Elf_Swxword | |
546 | get_r_addend(const Reltype* reloc) | |
547 | { return Reloc_types<sh_type_, size, big_endian>::get_reloc_addend(reloc); } | |
548 | ||
549 | // Write the r_info field to a new reloc, using the r_info field from | |
550 | // the original reloc, replacing the r_sym field with R_SYM. | |
551 | static inline void | |
552 | put_r_info(Reltype_write* new_reloc, Reltype* reloc, unsigned int r_sym) | |
553 | { | |
554 | unsigned int r_type = elfcpp::elf_r_type<size>(reloc->get_r_info()); | |
555 | new_reloc->put_r_info(elfcpp::elf_r_info<size>(r_sym, r_type)); | |
556 | } | |
557 | ||
558 | // Write the r_addend field to a new reloc. | |
559 | static inline void | |
560 | put_r_addend(Reltype_write* to, | |
561 | typename elfcpp::Elf_types<size>::Elf_Swxword addend) | |
562 | { Reloc_types<sh_type_, size, big_endian>::set_reloc_addend(to, addend); } | |
563 | ||
564 | // Return the size of the addend of the relocation (only used for SHT_REL). | |
565 | static unsigned int | |
566 | get_size_for_reloc(unsigned int, Relobj*) | |
567 | { | |
568 | gold_unreachable(); | |
569 | return 0; | |
570 | } | |
571 | }; | |
572 | ||
6a74a719 | 573 | // This class may be used as a typical class for the |
4d625b70 CC |
574 | // Scan_relocatable_reloc parameter to scan_relocatable_relocs. |
575 | // This class is intended to capture the most typical target behaviour, | |
576 | // while still permitting targets to define their own independent class | |
577 | // for Scan_relocatable_reloc. | |
578 | ||
579 | template<typename Classify_reloc> | |
6a74a719 ILT |
580 | class Default_scan_relocatable_relocs |
581 | { | |
582 | public: | |
4d625b70 CC |
583 | typedef typename Classify_reloc::Reltype Reltype; |
584 | static const int reloc_size = Classify_reloc::reloc_size; | |
585 | static const int sh_type = Classify_reloc::sh_type; | |
586 | ||
587 | // Return the symbol referred to by the relocation. | |
588 | static inline unsigned int | |
589 | get_r_sym(const Reltype* reloc) | |
590 | { return Classify_reloc::get_r_sym(reloc); } | |
591 | ||
592 | // Return the type of the relocation. | |
593 | static inline unsigned int | |
594 | get_r_type(const Reltype* reloc) | |
595 | { return Classify_reloc::get_r_type(reloc); } | |
596 | ||
6a74a719 ILT |
597 | // Return the strategy to use for a local symbol which is not a |
598 | // section symbol, given the relocation type. | |
599 | inline Relocatable_relocs::Reloc_strategy | |
68943102 | 600 | local_non_section_strategy(unsigned int r_type, Relobj*, unsigned int r_sym) |
c2508178 ILT |
601 | { |
602 | // We assume that relocation type 0 is NONE. Targets which are | |
603 | // different must override. | |
68943102 | 604 | if (r_type == 0 && r_sym == 0) |
c2508178 ILT |
605 | return Relocatable_relocs::RELOC_DISCARD; |
606 | return Relocatable_relocs::RELOC_COPY; | |
607 | } | |
6a74a719 ILT |
608 | |
609 | // Return the strategy to use for a local symbol which is a section | |
610 | // symbol, given the relocation type. | |
611 | inline Relocatable_relocs::Reloc_strategy | |
612 | local_section_strategy(unsigned int r_type, Relobj* object) | |
613 | { | |
614 | if (sh_type == elfcpp::SHT_RELA) | |
615 | return Relocatable_relocs::RELOC_ADJUST_FOR_SECTION_RELA; | |
616 | else | |
617 | { | |
4d625b70 | 618 | switch (Classify_reloc::get_size_for_reloc(r_type, object)) |
6a74a719 ILT |
619 | { |
620 | case 0: | |
7019cd25 | 621 | return Relocatable_relocs::RELOC_ADJUST_FOR_SECTION_0; |
6a74a719 ILT |
622 | case 1: |
623 | return Relocatable_relocs::RELOC_ADJUST_FOR_SECTION_1; | |
624 | case 2: | |
625 | return Relocatable_relocs::RELOC_ADJUST_FOR_SECTION_2; | |
626 | case 4: | |
627 | return Relocatable_relocs::RELOC_ADJUST_FOR_SECTION_4; | |
628 | case 8: | |
629 | return Relocatable_relocs::RELOC_ADJUST_FOR_SECTION_8; | |
630 | default: | |
631 | gold_unreachable(); | |
632 | } | |
633 | } | |
634 | } | |
635 | ||
636 | // Return the strategy to use for a global symbol, given the | |
637 | // relocation type, the object, and the symbol index. | |
638 | inline Relocatable_relocs::Reloc_strategy | |
68943102 ILT |
639 | global_strategy(unsigned int, Relobj*, unsigned int) |
640 | { return Relocatable_relocs::RELOC_COPY; } | |
6a74a719 ILT |
641 | }; |
642 | ||
4d625b70 CC |
643 | // This is a strategy class used with scan_relocatable_relocs |
644 | // and --emit-relocs. | |
645 | ||
646 | template<typename Classify_reloc> | |
647 | class Default_emit_relocs_strategy | |
648 | { | |
649 | public: | |
650 | typedef typename Classify_reloc::Reltype Reltype; | |
651 | static const int reloc_size = Classify_reloc::reloc_size; | |
652 | static const int sh_type = Classify_reloc::sh_type; | |
653 | ||
654 | // Return the symbol referred to by the relocation. | |
655 | static inline unsigned int | |
656 | get_r_sym(const Reltype* reloc) | |
657 | { return Classify_reloc::get_r_sym(reloc); } | |
658 | ||
659 | // Return the type of the relocation. | |
660 | static inline unsigned int | |
661 | get_r_type(const Reltype* reloc) | |
662 | { return Classify_reloc::get_r_type(reloc); } | |
663 | ||
664 | // A local non-section symbol. | |
665 | inline Relocatable_relocs::Reloc_strategy | |
666 | local_non_section_strategy(unsigned int, Relobj*, unsigned int) | |
667 | { return Relocatable_relocs::RELOC_COPY; } | |
668 | ||
669 | // A local section symbol. | |
670 | inline Relocatable_relocs::Reloc_strategy | |
671 | local_section_strategy(unsigned int, Relobj*) | |
672 | { | |
673 | if (sh_type == elfcpp::SHT_RELA) | |
674 | return Relocatable_relocs::RELOC_ADJUST_FOR_SECTION_RELA; | |
675 | else | |
676 | { | |
677 | // The addend is stored in the section contents. Since this | |
678 | // is not a relocatable link, we are going to apply the | |
679 | // relocation contents to the section as usual. This means | |
680 | // that we have no way to record the original addend. If the | |
681 | // original addend is not zero, there is basically no way for | |
682 | // the user to handle this correctly. Caveat emptor. | |
683 | return Relocatable_relocs::RELOC_ADJUST_FOR_SECTION_0; | |
684 | } | |
685 | } | |
686 | ||
687 | // A global symbol. | |
688 | inline Relocatable_relocs::Reloc_strategy | |
689 | global_strategy(unsigned int, Relobj*, unsigned int) | |
690 | { return Relocatable_relocs::RELOC_COPY; } | |
691 | }; | |
692 | ||
6a74a719 ILT |
693 | // Scan relocs during a relocatable link. This is a default |
694 | // definition which should work for most targets. | |
695 | // Scan_relocatable_reloc must name a class type which provides three | |
696 | // functions which return a Relocatable_relocs::Reloc_strategy code: | |
697 | // global_strategy, local_non_section_strategy, and | |
698 | // local_section_strategy. Most targets should be able to use | |
699 | // Default_scan_relocatable_relocs as this class. | |
700 | ||
4d625b70 | 701 | template<int size, bool big_endian, typename Scan_relocatable_reloc> |
6a74a719 ILT |
702 | void |
703 | scan_relocatable_relocs( | |
6a74a719 ILT |
704 | Symbol_table*, |
705 | Layout*, | |
6fa2a40b | 706 | Sized_relobj_file<size, big_endian>* object, |
6a74a719 ILT |
707 | unsigned int data_shndx, |
708 | const unsigned char* prelocs, | |
709 | size_t reloc_count, | |
710 | Output_section* output_section, | |
711 | bool needs_special_offset_handling, | |
712 | size_t local_symbol_count, | |
713 | const unsigned char* plocal_syms, | |
714 | Relocatable_relocs* rr) | |
715 | { | |
4d625b70 CC |
716 | typedef typename Scan_relocatable_reloc::Reltype Reltype; |
717 | const int reloc_size = Scan_relocatable_reloc::reloc_size; | |
6a74a719 ILT |
718 | const int sym_size = elfcpp::Elf_sizes<size>::sym_size; |
719 | Scan_relocatable_reloc scan; | |
720 | ||
721 | for (size_t i = 0; i < reloc_count; ++i, prelocs += reloc_size) | |
722 | { | |
723 | Reltype reloc(prelocs); | |
724 | ||
725 | Relocatable_relocs::Reloc_strategy strategy; | |
726 | ||
727 | if (needs_special_offset_handling | |
728 | && !output_section->is_input_address_mapped(object, data_shndx, | |
729 | reloc.get_r_offset())) | |
730 | strategy = Relocatable_relocs::RELOC_DISCARD; | |
731 | else | |
732 | { | |
4d625b70 CC |
733 | const unsigned int r_sym = Scan_relocatable_reloc::get_r_sym(&reloc); |
734 | const unsigned int r_type = | |
735 | Scan_relocatable_reloc::get_r_type(&reloc); | |
6a74a719 ILT |
736 | |
737 | if (r_sym >= local_symbol_count) | |
738 | strategy = scan.global_strategy(r_type, object, r_sym); | |
739 | else | |
740 | { | |
741 | gold_assert(plocal_syms != NULL); | |
742 | typename elfcpp::Sym<size, big_endian> lsym(plocal_syms | |
743 | + r_sym * sym_size); | |
d491d34e ILT |
744 | unsigned int shndx = lsym.get_st_shndx(); |
745 | bool is_ordinary; | |
746 | shndx = object->adjust_sym_shndx(r_sym, shndx, &is_ordinary); | |
747 | if (is_ordinary | |
6a74a719 | 748 | && shndx != elfcpp::SHN_UNDEF |
d491d34e | 749 | && !object->is_section_included(shndx)) |
6a74a719 ILT |
750 | { |
751 | // RELOC is a relocation against a local symbol | |
752 | // defined in a section we are discarding. Discard | |
753 | // the reloc. FIXME: Should we issue a warning? | |
754 | strategy = Relocatable_relocs::RELOC_DISCARD; | |
755 | } | |
756 | else if (lsym.get_st_type() != elfcpp::STT_SECTION) | |
68943102 ILT |
757 | strategy = scan.local_non_section_strategy(r_type, object, |
758 | r_sym); | |
6a74a719 ILT |
759 | else |
760 | { | |
761 | strategy = scan.local_section_strategy(r_type, object); | |
762 | if (strategy != Relocatable_relocs::RELOC_DISCARD) | |
ef9beddf | 763 | object->output_section(shndx)->set_needs_symtab_index(); |
6a74a719 | 764 | } |
d3bbad62 ILT |
765 | |
766 | if (strategy == Relocatable_relocs::RELOC_COPY) | |
767 | object->set_must_have_output_symtab_entry(r_sym); | |
6a74a719 ILT |
768 | } |
769 | } | |
770 | ||
771 | rr->set_next_reloc_strategy(strategy); | |
772 | } | |
773 | } | |
774 | ||
7404fe1b AM |
775 | // Relocate relocs. Called for a relocatable link, and for --emit-relocs. |
776 | // This is a default definition which should work for most targets. | |
6a74a719 | 777 | |
4d625b70 | 778 | template<int size, bool big_endian, typename Classify_reloc> |
6a74a719 | 779 | void |
7404fe1b | 780 | relocate_relocs( |
6a74a719 ILT |
781 | const Relocate_info<size, big_endian>* relinfo, |
782 | const unsigned char* prelocs, | |
783 | size_t reloc_count, | |
784 | Output_section* output_section, | |
62fe925a | 785 | typename elfcpp::Elf_types<size>::Elf_Off offset_in_output_section, |
6a74a719 | 786 | unsigned char* view, |
6be6f3bd | 787 | typename elfcpp::Elf_types<size>::Elf_Addr view_address, |
5c388529 | 788 | section_size_type view_size, |
6a74a719 ILT |
789 | unsigned char* reloc_view, |
790 | section_size_type reloc_view_size) | |
791 | { | |
ef9beddf | 792 | typedef typename elfcpp::Elf_types<size>::Elf_Addr Address; |
4d625b70 CC |
793 | typedef typename Classify_reloc::Reltype Reltype; |
794 | typedef typename Classify_reloc::Reltype_write Reltype_write; | |
795 | const int reloc_size = Classify_reloc::reloc_size; | |
eff45813 | 796 | const Address invalid_address = static_cast<Address>(0) - 1; |
6a74a719 | 797 | |
6fa2a40b | 798 | Sized_relobj_file<size, big_endian>* const object = relinfo->object; |
6a74a719 ILT |
799 | const unsigned int local_count = object->local_symbol_count(); |
800 | ||
801 | unsigned char* pwrite = reloc_view; | |
802 | ||
033bfb73 CC |
803 | const bool relocatable = parameters->options().relocatable(); |
804 | ||
6a74a719 ILT |
805 | for (size_t i = 0; i < reloc_count; ++i, prelocs += reloc_size) |
806 | { | |
91a65d2f | 807 | Relocatable_relocs::Reloc_strategy strategy = relinfo->rr->strategy(i); |
6a74a719 ILT |
808 | if (strategy == Relocatable_relocs::RELOC_DISCARD) |
809 | continue; | |
810 | ||
5c388529 DK |
811 | if (strategy == Relocatable_relocs::RELOC_SPECIAL) |
812 | { | |
813 | // Target wants to handle this relocation. | |
814 | Sized_target<size, big_endian>* target = | |
815 | parameters->sized_target<size, big_endian>(); | |
4d625b70 CC |
816 | target->relocate_special_relocatable(relinfo, Classify_reloc::sh_type, |
817 | prelocs, i, output_section, | |
5c388529 DK |
818 | offset_in_output_section, |
819 | view, view_address, | |
820 | view_size, pwrite); | |
821 | pwrite += reloc_size; | |
822 | continue; | |
823 | } | |
6a74a719 ILT |
824 | Reltype reloc(prelocs); |
825 | Reltype_write reloc_write(pwrite); | |
826 | ||
4d625b70 | 827 | const unsigned int r_sym = Classify_reloc::get_r_sym(&reloc); |
6a74a719 ILT |
828 | |
829 | // Get the new symbol index. | |
830 | ||
9215b98b | 831 | Output_section* os = NULL; |
6a74a719 ILT |
832 | unsigned int new_symndx; |
833 | if (r_sym < local_count) | |
834 | { | |
835 | switch (strategy) | |
836 | { | |
837 | case Relocatable_relocs::RELOC_COPY: | |
818bf354 ILT |
838 | if (r_sym == 0) |
839 | new_symndx = 0; | |
840 | else | |
841 | { | |
842 | new_symndx = object->symtab_index(r_sym); | |
843 | gold_assert(new_symndx != -1U); | |
844 | } | |
6a74a719 ILT |
845 | break; |
846 | ||
847 | case Relocatable_relocs::RELOC_ADJUST_FOR_SECTION_RELA: | |
7019cd25 | 848 | case Relocatable_relocs::RELOC_ADJUST_FOR_SECTION_0: |
6a74a719 ILT |
849 | case Relocatable_relocs::RELOC_ADJUST_FOR_SECTION_1: |
850 | case Relocatable_relocs::RELOC_ADJUST_FOR_SECTION_2: | |
851 | case Relocatable_relocs::RELOC_ADJUST_FOR_SECTION_4: | |
852 | case Relocatable_relocs::RELOC_ADJUST_FOR_SECTION_8: | |
2c339f71 | 853 | case Relocatable_relocs::RELOC_ADJUST_FOR_SECTION_4_UNALIGNED: |
6a74a719 ILT |
854 | { |
855 | // We are adjusting a section symbol. We need to find | |
856 | // the symbol table index of the section symbol for | |
857 | // the output section corresponding to input section | |
858 | // in which this symbol is defined. | |
859 | gold_assert(r_sym < local_count); | |
d491d34e ILT |
860 | bool is_ordinary; |
861 | unsigned int shndx = | |
862 | object->local_symbol_input_shndx(r_sym, &is_ordinary); | |
863 | gold_assert(is_ordinary); | |
9215b98b | 864 | os = object->output_section(shndx); |
6a74a719 ILT |
865 | gold_assert(os != NULL); |
866 | gold_assert(os->needs_symtab_index()); | |
867 | new_symndx = os->symtab_index(); | |
868 | } | |
869 | break; | |
870 | ||
871 | default: | |
872 | gold_unreachable(); | |
873 | } | |
874 | } | |
875 | else | |
876 | { | |
877 | const Symbol* gsym = object->global_symbol(r_sym); | |
878 | gold_assert(gsym != NULL); | |
879 | if (gsym->is_forwarder()) | |
880 | gsym = relinfo->symtab->resolve_forwards(gsym); | |
881 | ||
882 | gold_assert(gsym->has_symtab_index()); | |
883 | new_symndx = gsym->symtab_index(); | |
884 | } | |
885 | ||
886 | // Get the new offset--the location in the output section where | |
887 | // this relocation should be applied. | |
888 | ||
ef9beddf ILT |
889 | Address offset = reloc.get_r_offset(); |
890 | Address new_offset; | |
eff45813 | 891 | if (offset_in_output_section != invalid_address) |
6a74a719 ILT |
892 | new_offset = offset + offset_in_output_section; |
893 | else | |
894 | { | |
ef9beddf ILT |
895 | section_offset_type sot_offset = |
896 | convert_types<section_offset_type, Address>(offset); | |
897 | section_offset_type new_sot_offset = | |
898 | output_section->output_offset(object, relinfo->data_shndx, | |
899 | sot_offset); | |
900 | gold_assert(new_sot_offset != -1); | |
901 | new_offset = new_sot_offset; | |
6a74a719 ILT |
902 | } |
903 | ||
6be6f3bd ILT |
904 | // In an object file, r_offset is an offset within the section. |
905 | // In an executable or dynamic object, generated by | |
906 | // --emit-relocs, r_offset is an absolute address. | |
033bfb73 | 907 | if (!relocatable) |
e09ad04a ILT |
908 | { |
909 | new_offset += view_address; | |
eff45813 | 910 | if (offset_in_output_section != invalid_address) |
e09ad04a ILT |
911 | new_offset -= offset_in_output_section; |
912 | } | |
6be6f3bd | 913 | |
6a74a719 | 914 | reloc_write.put_r_offset(new_offset); |
4d625b70 | 915 | Classify_reloc::put_r_info(&reloc_write, &reloc, new_symndx); |
6a74a719 ILT |
916 | |
917 | // Handle the reloc addend based on the strategy. | |
918 | ||
919 | if (strategy == Relocatable_relocs::RELOC_COPY) | |
920 | { | |
4d625b70 CC |
921 | if (Classify_reloc::sh_type == elfcpp::SHT_RELA) |
922 | Classify_reloc::put_r_addend(&reloc_write, | |
923 | Classify_reloc::get_r_addend(&reloc)); | |
6a74a719 ILT |
924 | } |
925 | else | |
926 | { | |
927 | // The relocation uses a section symbol in the input file. | |
928 | // We are adjusting it to use a section symbol in the output | |
929 | // file. The input section symbol refers to some address in | |
930 | // the input section. We need the relocation in the output | |
931 | // file to refer to that same address. This adjustment to | |
932 | // the addend is the same calculation we use for a simple | |
933 | // absolute relocation for the input section symbol. | |
934 | ||
935 | const Symbol_value<size>* psymval = object->local_symbol(r_sym); | |
936 | ||
937 | unsigned char* padd = view + offset; | |
938 | switch (strategy) | |
939 | { | |
940 | case Relocatable_relocs::RELOC_ADJUST_FOR_SECTION_RELA: | |
941 | { | |
033bfb73 CC |
942 | typename elfcpp::Elf_types<size>::Elf_Swxword addend |
943 | = Classify_reloc::get_r_addend(&reloc); | |
944 | addend = psymval->value(object, addend); | |
945 | // In a relocatable link, the symbol value is relative to | |
946 | // the start of the output section. For a non-relocatable | |
947 | // link, we need to adjust the addend. | |
948 | if (!relocatable) | |
949 | { | |
950 | gold_assert(os != NULL); | |
951 | addend -= os->address(); | |
952 | } | |
4d625b70 | 953 | Classify_reloc::put_r_addend(&reloc_write, addend); |
6a74a719 ILT |
954 | } |
955 | break; | |
956 | ||
7019cd25 ILT |
957 | case Relocatable_relocs::RELOC_ADJUST_FOR_SECTION_0: |
958 | break; | |
959 | ||
6a74a719 ILT |
960 | case Relocatable_relocs::RELOC_ADJUST_FOR_SECTION_1: |
961 | Relocate_functions<size, big_endian>::rel8(padd, object, | |
962 | psymval); | |
963 | break; | |
964 | ||
965 | case Relocatable_relocs::RELOC_ADJUST_FOR_SECTION_2: | |
966 | Relocate_functions<size, big_endian>::rel16(padd, object, | |
967 | psymval); | |
968 | break; | |
969 | ||
970 | case Relocatable_relocs::RELOC_ADJUST_FOR_SECTION_4: | |
971 | Relocate_functions<size, big_endian>::rel32(padd, object, | |
972 | psymval); | |
973 | break; | |
974 | ||
975 | case Relocatable_relocs::RELOC_ADJUST_FOR_SECTION_8: | |
976 | Relocate_functions<size, big_endian>::rel64(padd, object, | |
977 | psymval); | |
978 | break; | |
979 | ||
2c339f71 DK |
980 | case Relocatable_relocs::RELOC_ADJUST_FOR_SECTION_4_UNALIGNED: |
981 | Relocate_functions<size, big_endian>::rel32_unaligned(padd, | |
982 | object, | |
983 | psymval); | |
984 | break; | |
985 | ||
6a74a719 ILT |
986 | default: |
987 | gold_unreachable(); | |
988 | } | |
989 | } | |
990 | ||
991 | pwrite += reloc_size; | |
992 | } | |
993 | ||
994 | gold_assert(static_cast<section_size_type>(pwrite - reloc_view) | |
995 | == reloc_view_size); | |
996 | } | |
997 | ||
61ba1cf9 ILT |
998 | } // End namespace gold. |
999 | ||
1000 | #endif // !defined(GOLD_TARGET_RELOC_H) |