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bae7f79e ILT |
1 | // object.cc -- support for an object file for linking in gold |
2 | ||
6cb15b7f ILT |
3 | // Copyright 2006, 2007 Free Software Foundation, Inc. |
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 | ||
bae7f79e ILT |
23 | #include "gold.h" |
24 | ||
25 | #include <cerrno> | |
26 | #include <cstring> | |
645f8123 | 27 | #include <cstdarg> |
a2b1aa12 | 28 | #include "demangle.h" |
9a2d6984 | 29 | #include "libiberty.h" |
bae7f79e | 30 | |
14bfc3f5 | 31 | #include "target-select.h" |
5c2c6c95 | 32 | #include "dwarf_reader.h" |
a2fb1b05 | 33 | #include "layout.h" |
61ba1cf9 | 34 | #include "output.h" |
f6ce93d6 | 35 | #include "symtab.h" |
4c50553d | 36 | #include "reloc.h" |
f6ce93d6 ILT |
37 | #include "object.h" |
38 | #include "dynobj.h" | |
bae7f79e ILT |
39 | |
40 | namespace gold | |
41 | { | |
42 | ||
645f8123 ILT |
43 | // Class Object. |
44 | ||
dbe717ef ILT |
45 | // Set the target based on fields in the ELF file header. |
46 | ||
47 | void | |
48 | Object::set_target(int machine, int size, bool big_endian, int osabi, | |
49 | int abiversion) | |
50 | { | |
51 | Target* target = select_target(machine, size, big_endian, osabi, abiversion); | |
52 | if (target == NULL) | |
75f2446e ILT |
53 | gold_fatal(_("%s: unsupported ELF machine number %d"), |
54 | this->name().c_str(), machine); | |
dbe717ef ILT |
55 | this->target_ = target; |
56 | } | |
57 | ||
75f2446e ILT |
58 | // Report an error for this object file. This is used by the |
59 | // elfcpp::Elf_file interface, and also called by the Object code | |
60 | // itself. | |
645f8123 ILT |
61 | |
62 | void | |
75f2446e | 63 | Object::error(const char* format, ...) const |
645f8123 ILT |
64 | { |
65 | va_list args; | |
645f8123 | 66 | va_start(args, format); |
75f2446e ILT |
67 | char* buf = NULL; |
68 | if (vasprintf(&buf, format, args) < 0) | |
69 | gold_nomem(); | |
645f8123 | 70 | va_end(args); |
75f2446e ILT |
71 | gold_error(_("%s: %s"), this->name().c_str(), buf); |
72 | free(buf); | |
645f8123 ILT |
73 | } |
74 | ||
75 | // Return a view of the contents of a section. | |
76 | ||
77 | const unsigned char* | |
8383303e ILT |
78 | Object::section_contents(unsigned int shndx, section_size_type* plen, |
79 | bool cache) | |
645f8123 ILT |
80 | { |
81 | Location loc(this->do_section_contents(shndx)); | |
8383303e ILT |
82 | *plen = convert_to_section_size_type(loc.data_size); |
83 | return this->get_view(loc.file_offset, *plen, cache); | |
645f8123 ILT |
84 | } |
85 | ||
dbe717ef ILT |
86 | // Read the section data into SD. This is code common to Sized_relobj |
87 | // and Sized_dynobj, so we put it into Object. | |
88 | ||
89 | template<int size, bool big_endian> | |
90 | void | |
91 | Object::read_section_data(elfcpp::Elf_file<size, big_endian, Object>* elf_file, | |
92 | Read_symbols_data* sd) | |
93 | { | |
94 | const int shdr_size = elfcpp::Elf_sizes<size>::shdr_size; | |
95 | ||
96 | // Read the section headers. | |
97 | const off_t shoff = elf_file->shoff(); | |
98 | const unsigned int shnum = this->shnum(); | |
9eb9fa57 | 99 | sd->section_headers = this->get_lasting_view(shoff, shnum * shdr_size, true); |
dbe717ef ILT |
100 | |
101 | // Read the section names. | |
102 | const unsigned char* pshdrs = sd->section_headers->data(); | |
103 | const unsigned char* pshdrnames = pshdrs + elf_file->shstrndx() * shdr_size; | |
104 | typename elfcpp::Shdr<size, big_endian> shdrnames(pshdrnames); | |
105 | ||
106 | if (shdrnames.get_sh_type() != elfcpp::SHT_STRTAB) | |
75f2446e ILT |
107 | this->error(_("section name section has wrong type: %u"), |
108 | static_cast<unsigned int>(shdrnames.get_sh_type())); | |
dbe717ef | 109 | |
8383303e ILT |
110 | sd->section_names_size = |
111 | convert_to_section_size_type(shdrnames.get_sh_size()); | |
dbe717ef | 112 | sd->section_names = this->get_lasting_view(shdrnames.get_sh_offset(), |
9eb9fa57 | 113 | sd->section_names_size, false); |
dbe717ef ILT |
114 | } |
115 | ||
116 | // If NAME is the name of a special .gnu.warning section, arrange for | |
117 | // the warning to be issued. SHNDX is the section index. Return | |
118 | // whether it is a warning section. | |
119 | ||
120 | bool | |
121 | Object::handle_gnu_warning_section(const char* name, unsigned int shndx, | |
122 | Symbol_table* symtab) | |
123 | { | |
124 | const char warn_prefix[] = ".gnu.warning."; | |
125 | const int warn_prefix_len = sizeof warn_prefix - 1; | |
126 | if (strncmp(name, warn_prefix, warn_prefix_len) == 0) | |
127 | { | |
128 | symtab->add_warning(name + warn_prefix_len, this, shndx); | |
129 | return true; | |
130 | } | |
131 | return false; | |
132 | } | |
133 | ||
f6ce93d6 | 134 | // Class Sized_relobj. |
bae7f79e ILT |
135 | |
136 | template<int size, bool big_endian> | |
f6ce93d6 | 137 | Sized_relobj<size, big_endian>::Sized_relobj( |
bae7f79e ILT |
138 | const std::string& name, |
139 | Input_file* input_file, | |
140 | off_t offset, | |
141 | const elfcpp::Ehdr<size, big_endian>& ehdr) | |
f6ce93d6 | 142 | : Relobj(name, input_file, offset), |
645f8123 | 143 | elf_file_(this, ehdr), |
dbe717ef | 144 | symtab_shndx_(-1U), |
61ba1cf9 ILT |
145 | local_symbol_count_(0), |
146 | output_local_symbol_count_(0), | |
7bf1f802 | 147 | output_local_dynsym_count_(0), |
730cdc88 | 148 | symbols_(), |
61ba1cf9 | 149 | local_symbol_offset_(0), |
7bf1f802 | 150 | local_dynsym_offset_(0), |
e727fa71 | 151 | local_values_(), |
730cdc88 ILT |
152 | local_got_offsets_(), |
153 | has_eh_frame_(false) | |
bae7f79e | 154 | { |
bae7f79e ILT |
155 | } |
156 | ||
157 | template<int size, bool big_endian> | |
f6ce93d6 | 158 | Sized_relobj<size, big_endian>::~Sized_relobj() |
bae7f79e ILT |
159 | { |
160 | } | |
161 | ||
645f8123 | 162 | // Set up an object file based on the file header. This sets up the |
bae7f79e ILT |
163 | // target and reads the section information. |
164 | ||
165 | template<int size, bool big_endian> | |
166 | void | |
f6ce93d6 | 167 | Sized_relobj<size, big_endian>::setup( |
bae7f79e ILT |
168 | const elfcpp::Ehdr<size, big_endian>& ehdr) |
169 | { | |
dbe717ef ILT |
170 | this->set_target(ehdr.get_e_machine(), size, big_endian, |
171 | ehdr.get_e_ident()[elfcpp::EI_OSABI], | |
172 | ehdr.get_e_ident()[elfcpp::EI_ABIVERSION]); | |
12e14209 | 173 | |
dbe717ef | 174 | const unsigned int shnum = this->elf_file_.shnum(); |
a2fb1b05 | 175 | this->set_shnum(shnum); |
dbe717ef | 176 | } |
12e14209 | 177 | |
dbe717ef ILT |
178 | // Find the SHT_SYMTAB section, given the section headers. The ELF |
179 | // standard says that maybe in the future there can be more than one | |
180 | // SHT_SYMTAB section. Until somebody figures out how that could | |
181 | // work, we assume there is only one. | |
12e14209 | 182 | |
dbe717ef ILT |
183 | template<int size, bool big_endian> |
184 | void | |
185 | Sized_relobj<size, big_endian>::find_symtab(const unsigned char* pshdrs) | |
186 | { | |
187 | const unsigned int shnum = this->shnum(); | |
188 | this->symtab_shndx_ = 0; | |
189 | if (shnum > 0) | |
bae7f79e | 190 | { |
dbe717ef ILT |
191 | // Look through the sections in reverse order, since gas tends |
192 | // to put the symbol table at the end. | |
193 | const unsigned char* p = pshdrs + shnum * This::shdr_size; | |
194 | unsigned int i = shnum; | |
195 | while (i > 0) | |
bae7f79e | 196 | { |
dbe717ef ILT |
197 | --i; |
198 | p -= This::shdr_size; | |
199 | typename This::Shdr shdr(p); | |
200 | if (shdr.get_sh_type() == elfcpp::SHT_SYMTAB) | |
201 | { | |
202 | this->symtab_shndx_ = i; | |
203 | break; | |
204 | } | |
bae7f79e | 205 | } |
bae7f79e ILT |
206 | } |
207 | } | |
208 | ||
730cdc88 ILT |
209 | // Return whether SHDR has the right type and flags to be a GNU |
210 | // .eh_frame section. | |
211 | ||
212 | template<int size, bool big_endian> | |
213 | bool | |
214 | Sized_relobj<size, big_endian>::check_eh_frame_flags( | |
215 | const elfcpp::Shdr<size, big_endian>* shdr) const | |
216 | { | |
217 | return (shdr->get_sh_size() > 0 | |
218 | && shdr->get_sh_type() == elfcpp::SHT_PROGBITS | |
219 | && shdr->get_sh_flags() == elfcpp::SHF_ALLOC); | |
220 | } | |
221 | ||
222 | // Return whether there is a GNU .eh_frame section, given the section | |
223 | // headers and the section names. | |
224 | ||
225 | template<int size, bool big_endian> | |
226 | bool | |
8383303e ILT |
227 | Sized_relobj<size, big_endian>::find_eh_frame( |
228 | const unsigned char* pshdrs, | |
229 | const char* names, | |
230 | section_size_type names_size) const | |
730cdc88 ILT |
231 | { |
232 | const unsigned int shnum = this->shnum(); | |
233 | const unsigned char* p = pshdrs + This::shdr_size; | |
234 | for (unsigned int i = 1; i < shnum; ++i, p += This::shdr_size) | |
235 | { | |
236 | typename This::Shdr shdr(p); | |
237 | if (this->check_eh_frame_flags(&shdr)) | |
238 | { | |
239 | if (shdr.get_sh_name() >= names_size) | |
240 | { | |
241 | this->error(_("bad section name offset for section %u: %lu"), | |
242 | i, static_cast<unsigned long>(shdr.get_sh_name())); | |
243 | continue; | |
244 | } | |
245 | ||
246 | const char* name = names + shdr.get_sh_name(); | |
247 | if (strcmp(name, ".eh_frame") == 0) | |
248 | return true; | |
249 | } | |
250 | } | |
251 | return false; | |
252 | } | |
253 | ||
12e14209 | 254 | // Read the sections and symbols from an object file. |
bae7f79e ILT |
255 | |
256 | template<int size, bool big_endian> | |
12e14209 | 257 | void |
f6ce93d6 | 258 | Sized_relobj<size, big_endian>::do_read_symbols(Read_symbols_data* sd) |
bae7f79e | 259 | { |
dbe717ef | 260 | this->read_section_data(&this->elf_file_, sd); |
12e14209 | 261 | |
dbe717ef ILT |
262 | const unsigned char* const pshdrs = sd->section_headers->data(); |
263 | ||
264 | this->find_symtab(pshdrs); | |
12e14209 | 265 | |
730cdc88 ILT |
266 | const unsigned char* namesu = sd->section_names->data(); |
267 | const char* names = reinterpret_cast<const char*>(namesu); | |
268 | if (this->find_eh_frame(pshdrs, names, sd->section_names_size)) | |
269 | this->has_eh_frame_ = true; | |
270 | ||
75f2446e ILT |
271 | sd->symbols = NULL; |
272 | sd->symbols_size = 0; | |
730cdc88 | 273 | sd->external_symbols_offset = 0; |
75f2446e ILT |
274 | sd->symbol_names = NULL; |
275 | sd->symbol_names_size = 0; | |
276 | ||
645f8123 | 277 | if (this->symtab_shndx_ == 0) |
bae7f79e ILT |
278 | { |
279 | // No symbol table. Weird but legal. | |
12e14209 | 280 | return; |
bae7f79e ILT |
281 | } |
282 | ||
12e14209 ILT |
283 | // Get the symbol table section header. |
284 | typename This::Shdr symtabshdr(pshdrs | |
645f8123 | 285 | + this->symtab_shndx_ * This::shdr_size); |
a3ad94ed | 286 | gold_assert(symtabshdr.get_sh_type() == elfcpp::SHT_SYMTAB); |
bae7f79e | 287 | |
730cdc88 ILT |
288 | // If this object has a .eh_frame section, we need all the symbols. |
289 | // Otherwise we only need the external symbols. While it would be | |
290 | // simpler to just always read all the symbols, I've seen object | |
291 | // files with well over 2000 local symbols, which for a 64-bit | |
292 | // object file format is over 5 pages that we don't need to read | |
293 | // now. | |
294 | ||
75f65a3e | 295 | const int sym_size = This::sym_size; |
92e059d8 ILT |
296 | const unsigned int loccount = symtabshdr.get_sh_info(); |
297 | this->local_symbol_count_ = loccount; | |
7bf1f802 | 298 | this->local_values_.resize(loccount); |
8383303e | 299 | section_offset_type locsize = loccount * sym_size; |
730cdc88 | 300 | off_t dataoff = symtabshdr.get_sh_offset(); |
8383303e ILT |
301 | section_size_type datasize = |
302 | convert_to_section_size_type(symtabshdr.get_sh_size()); | |
730cdc88 | 303 | off_t extoff = dataoff + locsize; |
8383303e | 304 | section_size_type extsize = datasize - locsize; |
75f65a3e | 305 | |
730cdc88 | 306 | off_t readoff = this->has_eh_frame_ ? dataoff : extoff; |
8383303e | 307 | section_size_type readsize = this->has_eh_frame_ ? datasize : extsize; |
730cdc88 ILT |
308 | |
309 | File_view* fvsymtab = this->get_lasting_view(readoff, readsize, false); | |
bae7f79e ILT |
310 | |
311 | // Read the section header for the symbol names. | |
dbe717ef ILT |
312 | unsigned int strtab_shndx = symtabshdr.get_sh_link(); |
313 | if (strtab_shndx >= this->shnum()) | |
bae7f79e | 314 | { |
75f2446e ILT |
315 | this->error(_("invalid symbol table name index: %u"), strtab_shndx); |
316 | return; | |
bae7f79e | 317 | } |
dbe717ef | 318 | typename This::Shdr strtabshdr(pshdrs + strtab_shndx * This::shdr_size); |
bae7f79e ILT |
319 | if (strtabshdr.get_sh_type() != elfcpp::SHT_STRTAB) |
320 | { | |
75f2446e ILT |
321 | this->error(_("symbol table name section has wrong type: %u"), |
322 | static_cast<unsigned int>(strtabshdr.get_sh_type())); | |
323 | return; | |
bae7f79e ILT |
324 | } |
325 | ||
326 | // Read the symbol names. | |
327 | File_view* fvstrtab = this->get_lasting_view(strtabshdr.get_sh_offset(), | |
9eb9fa57 | 328 | strtabshdr.get_sh_size(), true); |
bae7f79e | 329 | |
12e14209 | 330 | sd->symbols = fvsymtab; |
730cdc88 ILT |
331 | sd->symbols_size = readsize; |
332 | sd->external_symbols_offset = this->has_eh_frame_ ? locsize : 0; | |
12e14209 | 333 | sd->symbol_names = fvstrtab; |
8383303e ILT |
334 | sd->symbol_names_size = |
335 | convert_to_section_size_type(strtabshdr.get_sh_size()); | |
a2fb1b05 ILT |
336 | } |
337 | ||
730cdc88 ILT |
338 | // Return the section index of symbol SYM. Set *VALUE to its value in |
339 | // the object file. Note that for a symbol which is not defined in | |
340 | // this object file, this will set *VALUE to 0 and return SHN_UNDEF; | |
341 | // it will not return the final value of the symbol in the link. | |
342 | ||
343 | template<int size, bool big_endian> | |
344 | unsigned int | |
345 | Sized_relobj<size, big_endian>::symbol_section_and_value(unsigned int sym, | |
346 | Address* value) | |
347 | { | |
8383303e | 348 | section_size_type symbols_size; |
730cdc88 ILT |
349 | const unsigned char* symbols = this->section_contents(this->symtab_shndx_, |
350 | &symbols_size, | |
351 | false); | |
352 | ||
353 | const size_t count = symbols_size / This::sym_size; | |
354 | gold_assert(sym < count); | |
355 | ||
356 | elfcpp::Sym<size, big_endian> elfsym(symbols + sym * This::sym_size); | |
357 | *value = elfsym.get_st_value(); | |
358 | // FIXME: Handle SHN_XINDEX. | |
359 | return elfsym.get_st_shndx(); | |
360 | } | |
361 | ||
a2fb1b05 ILT |
362 | // Return whether to include a section group in the link. LAYOUT is |
363 | // used to keep track of which section groups we have already seen. | |
364 | // INDEX is the index of the section group and SHDR is the section | |
365 | // header. If we do not want to include this group, we set bits in | |
366 | // OMIT for each section which should be discarded. | |
367 | ||
368 | template<int size, bool big_endian> | |
369 | bool | |
f6ce93d6 | 370 | Sized_relobj<size, big_endian>::include_section_group( |
a2fb1b05 ILT |
371 | Layout* layout, |
372 | unsigned int index, | |
373 | const elfcpp::Shdr<size, big_endian>& shdr, | |
374 | std::vector<bool>* omit) | |
375 | { | |
376 | // Read the section contents. | |
377 | const unsigned char* pcon = this->get_view(shdr.get_sh_offset(), | |
9eb9fa57 | 378 | shdr.get_sh_size(), false); |
a2fb1b05 ILT |
379 | const elfcpp::Elf_Word* pword = |
380 | reinterpret_cast<const elfcpp::Elf_Word*>(pcon); | |
381 | ||
382 | // The first word contains flags. We only care about COMDAT section | |
383 | // groups. Other section groups are always included in the link | |
384 | // just like ordinary sections. | |
f6ce93d6 | 385 | elfcpp::Elf_Word flags = elfcpp::Swap<32, big_endian>::readval(pword); |
a2fb1b05 ILT |
386 | if ((flags & elfcpp::GRP_COMDAT) == 0) |
387 | return true; | |
388 | ||
389 | // Look up the group signature, which is the name of a symbol. This | |
390 | // is a lot of effort to go to to read a string. Why didn't they | |
391 | // just use the name of the SHT_GROUP section as the group | |
392 | // signature? | |
393 | ||
394 | // Get the appropriate symbol table header (this will normally be | |
395 | // the single SHT_SYMTAB section, but in principle it need not be). | |
645f8123 ILT |
396 | const unsigned int link = shdr.get_sh_link(); |
397 | typename This::Shdr symshdr(this, this->elf_file_.section_header(link)); | |
a2fb1b05 ILT |
398 | |
399 | // Read the symbol table entry. | |
400 | if (shdr.get_sh_info() >= symshdr.get_sh_size() / This::sym_size) | |
401 | { | |
75f2446e ILT |
402 | this->error(_("section group %u info %u out of range"), |
403 | index, shdr.get_sh_info()); | |
404 | return false; | |
a2fb1b05 ILT |
405 | } |
406 | off_t symoff = symshdr.get_sh_offset() + shdr.get_sh_info() * This::sym_size; | |
9eb9fa57 | 407 | const unsigned char* psym = this->get_view(symoff, This::sym_size, true); |
a2fb1b05 ILT |
408 | elfcpp::Sym<size, big_endian> sym(psym); |
409 | ||
a2fb1b05 | 410 | // Read the symbol table names. |
8383303e | 411 | section_size_type symnamelen; |
645f8123 | 412 | const unsigned char* psymnamesu; |
9eb9fa57 ILT |
413 | psymnamesu = this->section_contents(symshdr.get_sh_link(), &symnamelen, |
414 | true); | |
a2fb1b05 ILT |
415 | const char* psymnames = reinterpret_cast<const char*>(psymnamesu); |
416 | ||
417 | // Get the section group signature. | |
645f8123 | 418 | if (sym.get_st_name() >= symnamelen) |
a2fb1b05 | 419 | { |
75f2446e ILT |
420 | this->error(_("symbol %u name offset %u out of range"), |
421 | shdr.get_sh_info(), sym.get_st_name()); | |
422 | return false; | |
a2fb1b05 ILT |
423 | } |
424 | ||
425 | const char* signature = psymnames + sym.get_st_name(); | |
426 | ||
ead1e424 ILT |
427 | // It seems that some versions of gas will create a section group |
428 | // associated with a section symbol, and then fail to give a name to | |
429 | // the section symbol. In such a case, use the name of the section. | |
430 | // FIXME. | |
645f8123 ILT |
431 | std::string secname; |
432 | if (signature[0] == '\0' && sym.get_st_type() == elfcpp::STT_SECTION) | |
ead1e424 | 433 | { |
645f8123 ILT |
434 | secname = this->section_name(sym.get_st_shndx()); |
435 | signature = secname.c_str(); | |
ead1e424 ILT |
436 | } |
437 | ||
a2fb1b05 ILT |
438 | // Record this section group, and see whether we've already seen one |
439 | // with the same signature. | |
440 | if (layout->add_comdat(signature, true)) | |
441 | return true; | |
442 | ||
443 | // This is a duplicate. We want to discard the sections in this | |
444 | // group. | |
445 | size_t count = shdr.get_sh_size() / sizeof(elfcpp::Elf_Word); | |
446 | for (size_t i = 1; i < count; ++i) | |
447 | { | |
f6ce93d6 ILT |
448 | elfcpp::Elf_Word secnum = |
449 | elfcpp::Swap<32, big_endian>::readval(pword + i); | |
a2fb1b05 ILT |
450 | if (secnum >= this->shnum()) |
451 | { | |
75f2446e ILT |
452 | this->error(_("section %u in section group %u out of range"), |
453 | secnum, index); | |
454 | continue; | |
a2fb1b05 ILT |
455 | } |
456 | (*omit)[secnum] = true; | |
457 | } | |
458 | ||
459 | return false; | |
460 | } | |
461 | ||
462 | // Whether to include a linkonce section in the link. NAME is the | |
463 | // name of the section and SHDR is the section header. | |
464 | ||
465 | // Linkonce sections are a GNU extension implemented in the original | |
466 | // GNU linker before section groups were defined. The semantics are | |
467 | // that we only include one linkonce section with a given name. The | |
468 | // name of a linkonce section is normally .gnu.linkonce.T.SYMNAME, | |
469 | // where T is the type of section and SYMNAME is the name of a symbol. | |
470 | // In an attempt to make linkonce sections interact well with section | |
471 | // groups, we try to identify SYMNAME and use it like a section group | |
472 | // signature. We want to block section groups with that signature, | |
473 | // but not other linkonce sections with that signature. We also use | |
474 | // the full name of the linkonce section as a normal section group | |
475 | // signature. | |
476 | ||
477 | template<int size, bool big_endian> | |
478 | bool | |
f6ce93d6 | 479 | Sized_relobj<size, big_endian>::include_linkonce_section( |
a2fb1b05 ILT |
480 | Layout* layout, |
481 | const char* name, | |
482 | const elfcpp::Shdr<size, big_endian>&) | |
483 | { | |
ad435a24 ILT |
484 | // In general the symbol name we want will be the string following |
485 | // the last '.'. However, we have to handle the case of | |
486 | // .gnu.linkonce.t.__i686.get_pc_thunk.bx, which was generated by | |
487 | // some versions of gcc. So we use a heuristic: if the name starts | |
488 | // with ".gnu.linkonce.t.", we use everything after that. Otherwise | |
489 | // we look for the last '.'. We can't always simply skip | |
490 | // ".gnu.linkonce.X", because we have to deal with cases like | |
491 | // ".gnu.linkonce.d.rel.ro.local". | |
492 | const char* const linkonce_t = ".gnu.linkonce.t."; | |
493 | const char* symname; | |
494 | if (strncmp(name, linkonce_t, strlen(linkonce_t)) == 0) | |
495 | symname = name + strlen(linkonce_t); | |
496 | else | |
497 | symname = strrchr(name, '.') + 1; | |
a783673b ILT |
498 | bool include1 = layout->add_comdat(symname, false); |
499 | bool include2 = layout->add_comdat(name, true); | |
500 | return include1 && include2; | |
a2fb1b05 ILT |
501 | } |
502 | ||
503 | // Lay out the input sections. We walk through the sections and check | |
504 | // whether they should be included in the link. If they should, we | |
505 | // pass them to the Layout object, which will return an output section | |
506 | // and an offset. | |
507 | ||
508 | template<int size, bool big_endian> | |
509 | void | |
7e1edb90 | 510 | Sized_relobj<size, big_endian>::do_layout(Symbol_table* symtab, |
f6ce93d6 | 511 | Layout* layout, |
12e14209 | 512 | Read_symbols_data* sd) |
a2fb1b05 | 513 | { |
dbe717ef | 514 | const unsigned int shnum = this->shnum(); |
12e14209 ILT |
515 | if (shnum == 0) |
516 | return; | |
a2fb1b05 ILT |
517 | |
518 | // Get the section headers. | |
12e14209 | 519 | const unsigned char* pshdrs = sd->section_headers->data(); |
a2fb1b05 ILT |
520 | |
521 | // Get the section names. | |
12e14209 | 522 | const unsigned char* pnamesu = sd->section_names->data(); |
a2fb1b05 ILT |
523 | const char* pnames = reinterpret_cast<const char*>(pnamesu); |
524 | ||
730cdc88 ILT |
525 | // For each section, record the index of the reloc section if any. |
526 | // Use 0 to mean that there is no reloc section, -1U to mean that | |
527 | // there is more than one. | |
528 | std::vector<unsigned int> reloc_shndx(shnum, 0); | |
529 | std::vector<unsigned int> reloc_type(shnum, elfcpp::SHT_NULL); | |
530 | // Skip the first, dummy, section. | |
531 | pshdrs += This::shdr_size; | |
532 | for (unsigned int i = 1; i < shnum; ++i, pshdrs += This::shdr_size) | |
533 | { | |
534 | typename This::Shdr shdr(pshdrs); | |
535 | ||
536 | unsigned int sh_type = shdr.get_sh_type(); | |
537 | if (sh_type == elfcpp::SHT_REL || sh_type == elfcpp::SHT_RELA) | |
538 | { | |
539 | unsigned int target_shndx = shdr.get_sh_info(); | |
540 | if (target_shndx == 0 || target_shndx >= shnum) | |
541 | { | |
542 | this->error(_("relocation section %u has bad info %u"), | |
543 | i, target_shndx); | |
544 | continue; | |
545 | } | |
546 | ||
547 | if (reloc_shndx[target_shndx] != 0) | |
548 | reloc_shndx[target_shndx] = -1U; | |
549 | else | |
550 | { | |
551 | reloc_shndx[target_shndx] = i; | |
552 | reloc_type[target_shndx] = sh_type; | |
553 | } | |
554 | } | |
555 | } | |
556 | ||
a2fb1b05 | 557 | std::vector<Map_to_output>& map_sections(this->map_to_output()); |
61ba1cf9 | 558 | map_sections.resize(shnum); |
a2fb1b05 | 559 | |
35cdfc9a ILT |
560 | // Whether we've seen a .note.GNU-stack section. |
561 | bool seen_gnu_stack = false; | |
562 | // The flags of a .note.GNU-stack section. | |
563 | uint64_t gnu_stack_flags = 0; | |
564 | ||
a2fb1b05 ILT |
565 | // Keep track of which sections to omit. |
566 | std::vector<bool> omit(shnum, false); | |
567 | ||
730cdc88 ILT |
568 | // Keep track of .eh_frame sections. |
569 | std::vector<unsigned int> eh_frame_sections; | |
570 | ||
f6ce93d6 | 571 | // Skip the first, dummy, section. |
730cdc88 | 572 | pshdrs = sd->section_headers->data() + This::shdr_size; |
f6ce93d6 | 573 | for (unsigned int i = 1; i < shnum; ++i, pshdrs += This::shdr_size) |
a2fb1b05 | 574 | { |
75f65a3e | 575 | typename This::Shdr shdr(pshdrs); |
a2fb1b05 | 576 | |
12e14209 | 577 | if (shdr.get_sh_name() >= sd->section_names_size) |
a2fb1b05 | 578 | { |
75f2446e ILT |
579 | this->error(_("bad section name offset for section %u: %lu"), |
580 | i, static_cast<unsigned long>(shdr.get_sh_name())); | |
581 | return; | |
a2fb1b05 ILT |
582 | } |
583 | ||
584 | const char* name = pnames + shdr.get_sh_name(); | |
585 | ||
dbe717ef | 586 | if (this->handle_gnu_warning_section(name, i, symtab)) |
f6ce93d6 | 587 | { |
7e1edb90 | 588 | if (!parameters->output_is_object()) |
f6ce93d6 ILT |
589 | omit[i] = true; |
590 | } | |
591 | ||
35cdfc9a ILT |
592 | // The .note.GNU-stack section is special. It gives the |
593 | // protection flags that this object file requires for the stack | |
594 | // in memory. | |
595 | if (strcmp(name, ".note.GNU-stack") == 0) | |
596 | { | |
597 | seen_gnu_stack = true; | |
598 | gnu_stack_flags |= shdr.get_sh_flags(); | |
599 | omit[i] = true; | |
600 | } | |
601 | ||
a2fb1b05 ILT |
602 | bool discard = omit[i]; |
603 | if (!discard) | |
604 | { | |
605 | if (shdr.get_sh_type() == elfcpp::SHT_GROUP) | |
606 | { | |
607 | if (!this->include_section_group(layout, i, shdr, &omit)) | |
608 | discard = true; | |
609 | } | |
cba134d6 ILT |
610 | else if ((shdr.get_sh_flags() & elfcpp::SHF_GROUP) == 0 |
611 | && Layout::is_linkonce(name)) | |
a2fb1b05 ILT |
612 | { |
613 | if (!this->include_linkonce_section(layout, name, shdr)) | |
614 | discard = true; | |
615 | } | |
616 | } | |
617 | ||
618 | if (discard) | |
619 | { | |
620 | // Do not include this section in the link. | |
621 | map_sections[i].output_section = NULL; | |
622 | continue; | |
623 | } | |
624 | ||
730cdc88 ILT |
625 | // The .eh_frame section is special. It holds exception frame |
626 | // information that we need to read in order to generate the | |
627 | // exception frame header. We process these after all the other | |
628 | // sections so that the exception frame reader can reliably | |
629 | // determine which sections are being discarded, and discard the | |
630 | // corresponding information. | |
631 | if (!parameters->output_is_object() | |
632 | && strcmp(name, ".eh_frame") == 0 | |
633 | && this->check_eh_frame_flags(&shdr)) | |
634 | { | |
635 | eh_frame_sections.push_back(i); | |
636 | continue; | |
637 | } | |
638 | ||
a2fb1b05 | 639 | off_t offset; |
730cdc88 ILT |
640 | Output_section* os = layout->layout(this, i, name, shdr, |
641 | reloc_shndx[i], reloc_type[i], | |
642 | &offset); | |
a2fb1b05 ILT |
643 | |
644 | map_sections[i].output_section = os; | |
645 | map_sections[i].offset = offset; | |
730cdc88 ILT |
646 | |
647 | // If this section requires special handling, and if there are | |
648 | // relocs that apply to it, then we must do the special handling | |
649 | // before we apply the relocs. | |
650 | if (offset == -1 && reloc_shndx[i] != 0) | |
651 | this->set_relocs_must_follow_section_writes(); | |
12e14209 ILT |
652 | } |
653 | ||
35cdfc9a ILT |
654 | layout->layout_gnu_stack(seen_gnu_stack, gnu_stack_flags); |
655 | ||
730cdc88 ILT |
656 | // Handle the .eh_frame sections at the end. |
657 | for (std::vector<unsigned int>::const_iterator p = eh_frame_sections.begin(); | |
658 | p != eh_frame_sections.end(); | |
659 | ++p) | |
660 | { | |
661 | gold_assert(this->has_eh_frame_); | |
662 | gold_assert(sd->external_symbols_offset != 0); | |
663 | ||
664 | unsigned int i = *p; | |
665 | const unsigned char *pshdr; | |
666 | pshdr = sd->section_headers->data() + i * This::shdr_size; | |
667 | typename This::Shdr shdr(pshdr); | |
668 | ||
669 | off_t offset; | |
670 | Output_section* os = layout->layout_eh_frame(this, | |
671 | sd->symbols->data(), | |
672 | sd->symbols_size, | |
673 | sd->symbol_names->data(), | |
674 | sd->symbol_names_size, | |
675 | i, shdr, | |
676 | reloc_shndx[i], | |
677 | reloc_type[i], | |
678 | &offset); | |
679 | map_sections[i].output_section = os; | |
680 | map_sections[i].offset = offset; | |
681 | ||
682 | // If this section requires special handling, and if there are | |
683 | // relocs that apply to it, then we must do the special handling | |
684 | // before we apply the relocs. | |
685 | if (offset == -1 && reloc_shndx[i] != 0) | |
686 | this->set_relocs_must_follow_section_writes(); | |
687 | } | |
688 | ||
12e14209 ILT |
689 | delete sd->section_headers; |
690 | sd->section_headers = NULL; | |
691 | delete sd->section_names; | |
692 | sd->section_names = NULL; | |
693 | } | |
694 | ||
695 | // Add the symbols to the symbol table. | |
696 | ||
697 | template<int size, bool big_endian> | |
698 | void | |
f6ce93d6 | 699 | Sized_relobj<size, big_endian>::do_add_symbols(Symbol_table* symtab, |
12e14209 ILT |
700 | Read_symbols_data* sd) |
701 | { | |
702 | if (sd->symbols == NULL) | |
703 | { | |
a3ad94ed | 704 | gold_assert(sd->symbol_names == NULL); |
12e14209 ILT |
705 | return; |
706 | } | |
a2fb1b05 | 707 | |
12e14209 | 708 | const int sym_size = This::sym_size; |
730cdc88 ILT |
709 | size_t symcount = ((sd->symbols_size - sd->external_symbols_offset) |
710 | / sym_size); | |
8383303e | 711 | if (symcount * sym_size != sd->symbols_size - sd->external_symbols_offset) |
12e14209 | 712 | { |
75f2446e ILT |
713 | this->error(_("size of symbols is not multiple of symbol size")); |
714 | return; | |
a2fb1b05 | 715 | } |
12e14209 | 716 | |
730cdc88 | 717 | this->symbols_.resize(symcount); |
12e14209 | 718 | |
12e14209 ILT |
719 | const char* sym_names = |
720 | reinterpret_cast<const char*>(sd->symbol_names->data()); | |
730cdc88 ILT |
721 | symtab->add_from_relobj(this, |
722 | sd->symbols->data() + sd->external_symbols_offset, | |
723 | symcount, sym_names, sd->symbol_names_size, | |
724 | &this->symbols_); | |
12e14209 ILT |
725 | |
726 | delete sd->symbols; | |
727 | sd->symbols = NULL; | |
728 | delete sd->symbol_names; | |
729 | sd->symbol_names = NULL; | |
bae7f79e ILT |
730 | } |
731 | ||
7bf1f802 | 732 | // Finalize the local symbols. Here we add their names to *POOL and |
17a1d0a9 ILT |
733 | // *DYNPOOL, and we add their values to THIS->LOCAL_VALUES_. This |
734 | // function is always called from a singleton thread. The actual | |
b8e6aad9 | 735 | // output of the local symbols will occur in a separate task. |
75f65a3e ILT |
736 | |
737 | template<int size, bool big_endian> | |
7bf1f802 ILT |
738 | void |
739 | Sized_relobj<size, big_endian>::do_count_local_symbols(Stringpool* pool, | |
740 | Stringpool* dynpool) | |
75f65a3e | 741 | { |
a3ad94ed | 742 | gold_assert(this->symtab_shndx_ != -1U); |
645f8123 | 743 | if (this->symtab_shndx_ == 0) |
61ba1cf9 ILT |
744 | { |
745 | // This object has no symbols. Weird but legal. | |
7bf1f802 | 746 | return; |
61ba1cf9 ILT |
747 | } |
748 | ||
75f65a3e | 749 | // Read the symbol table section header. |
645f8123 ILT |
750 | const unsigned int symtab_shndx = this->symtab_shndx_; |
751 | typename This::Shdr symtabshdr(this, | |
752 | this->elf_file_.section_header(symtab_shndx)); | |
a3ad94ed | 753 | gold_assert(symtabshdr.get_sh_type() == elfcpp::SHT_SYMTAB); |
75f65a3e ILT |
754 | |
755 | // Read the local symbols. | |
75f65a3e | 756 | const int sym_size = This::sym_size; |
92e059d8 | 757 | const unsigned int loccount = this->local_symbol_count_; |
a3ad94ed | 758 | gold_assert(loccount == symtabshdr.get_sh_info()); |
75f65a3e ILT |
759 | off_t locsize = loccount * sym_size; |
760 | const unsigned char* psyms = this->get_view(symtabshdr.get_sh_offset(), | |
9eb9fa57 | 761 | locsize, true); |
75f65a3e | 762 | |
75f65a3e | 763 | // Read the symbol names. |
645f8123 | 764 | const unsigned int strtab_shndx = symtabshdr.get_sh_link(); |
8383303e | 765 | section_size_type strtab_size; |
645f8123 | 766 | const unsigned char* pnamesu = this->section_contents(strtab_shndx, |
9eb9fa57 ILT |
767 | &strtab_size, |
768 | true); | |
75f65a3e ILT |
769 | const char* pnames = reinterpret_cast<const char*>(pnamesu); |
770 | ||
771 | // Loop over the local symbols. | |
772 | ||
c06b7b0b | 773 | const std::vector<Map_to_output>& mo(this->map_to_output()); |
75f65a3e | 774 | unsigned int shnum = this->shnum(); |
61ba1cf9 | 775 | unsigned int count = 0; |
7bf1f802 | 776 | unsigned int dyncount = 0; |
75f65a3e ILT |
777 | // Skip the first, dummy, symbol. |
778 | psyms += sym_size; | |
61ba1cf9 | 779 | for (unsigned int i = 1; i < loccount; ++i, psyms += sym_size) |
75f65a3e ILT |
780 | { |
781 | elfcpp::Sym<size, big_endian> sym(psyms); | |
782 | ||
b8e6aad9 ILT |
783 | Symbol_value<size>& lv(this->local_values_[i]); |
784 | ||
75f65a3e | 785 | unsigned int shndx = sym.get_st_shndx(); |
b8e6aad9 | 786 | lv.set_input_shndx(shndx); |
75f65a3e | 787 | |
063f12a8 ILT |
788 | if (sym.get_st_type() == elfcpp::STT_SECTION) |
789 | lv.set_is_section_symbol(); | |
7bf1f802 ILT |
790 | else if (sym.get_st_type() == elfcpp::STT_TLS) |
791 | lv.set_is_tls_symbol(); | |
792 | ||
793 | // Save the input symbol value for use in do_finalize_local_symbols(). | |
794 | lv.set_input_value(sym.get_st_value()); | |
795 | ||
796 | // Decide whether this symbol should go into the output file. | |
063f12a8 | 797 | |
7bf1f802 ILT |
798 | if (shndx < shnum && mo[shndx].output_section == NULL) |
799 | { | |
800 | lv.set_no_output_symtab_entry(); | |
801 | continue; | |
802 | } | |
803 | ||
804 | if (sym.get_st_type() == elfcpp::STT_SECTION) | |
805 | { | |
806 | lv.set_no_output_symtab_entry(); | |
807 | continue; | |
808 | } | |
809 | ||
810 | if (sym.get_st_name() >= strtab_size) | |
811 | { | |
812 | this->error(_("local symbol %u section name out of range: %u >= %u"), | |
813 | i, sym.get_st_name(), | |
814 | static_cast<unsigned int>(strtab_size)); | |
815 | lv.set_no_output_symtab_entry(); | |
816 | continue; | |
817 | } | |
818 | ||
819 | // Add the symbol to the symbol table string pool. | |
820 | const char* name = pnames + sym.get_st_name(); | |
821 | pool->add(name, true, NULL); | |
822 | ++count; | |
823 | ||
824 | // If needed, add the symbol to the dynamic symbol table string pool. | |
825 | if (lv.needs_output_dynsym_entry()) | |
826 | { | |
827 | dynpool->add(name, true, NULL); | |
828 | ++dyncount; | |
829 | } | |
830 | } | |
831 | ||
832 | this->output_local_symbol_count_ = count; | |
833 | this->output_local_dynsym_count_ = dyncount; | |
834 | } | |
835 | ||
836 | // Finalize the local symbols. Here we add their values to | |
837 | // THIS->LOCAL_VALUES_ and set their output symbol table indexes. | |
17a1d0a9 | 838 | // This function is always called from a singleton thread. The actual |
7bf1f802 ILT |
839 | // output of the local symbols will occur in a separate task. |
840 | ||
841 | template<int size, bool big_endian> | |
842 | unsigned int | |
843 | Sized_relobj<size, big_endian>::do_finalize_local_symbols(unsigned int index, | |
844 | off_t off) | |
845 | { | |
846 | gold_assert(off == static_cast<off_t>(align_address(off, size >> 3))); | |
847 | ||
848 | const unsigned int loccount = this->local_symbol_count_; | |
849 | this->local_symbol_offset_ = off; | |
850 | ||
851 | const std::vector<Map_to_output>& mo(this->map_to_output()); | |
852 | unsigned int shnum = this->shnum(); | |
853 | ||
854 | for (unsigned int i = 1; i < loccount; ++i) | |
855 | { | |
856 | Symbol_value<size>& lv(this->local_values_[i]); | |
857 | ||
858 | unsigned int shndx = lv.input_shndx(); | |
859 | ||
860 | // Set the output symbol value. | |
861 | ||
75f65a3e ILT |
862 | if (shndx >= elfcpp::SHN_LORESERVE) |
863 | { | |
61ba1cf9 | 864 | if (shndx == elfcpp::SHN_ABS) |
7bf1f802 | 865 | lv.set_output_value(lv.input_value()); |
61ba1cf9 | 866 | else |
75f65a3e | 867 | { |
61ba1cf9 | 868 | // FIXME: Handle SHN_XINDEX. |
75f2446e ILT |
869 | this->error(_("unknown section index %u for local symbol %u"), |
870 | shndx, i); | |
871 | lv.set_output_value(0); | |
75f65a3e | 872 | } |
75f65a3e ILT |
873 | } |
874 | else | |
875 | { | |
876 | if (shndx >= shnum) | |
877 | { | |
75f2446e ILT |
878 | this->error(_("local symbol %u section index %u out of range"), |
879 | i, shndx); | |
880 | shndx = 0; | |
75f65a3e ILT |
881 | } |
882 | ||
b8e6aad9 ILT |
883 | Output_section* os = mo[shndx].output_section; |
884 | ||
885 | if (os == NULL) | |
61ba1cf9 | 886 | { |
b8e6aad9 | 887 | lv.set_output_value(0); |
61ba1cf9 ILT |
888 | continue; |
889 | } | |
7bf1f802 ILT |
890 | else if (mo[shndx].offset == -1) |
891 | { | |
a9a60db6 ILT |
892 | // This is a SHF_MERGE section or one which otherwise |
893 | // requires special handling. We get the output address | |
894 | // of the start of the merged section. If this is not a | |
895 | // section symbol, we can then determine the final | |
896 | // value. If it is a section symbol, we can not, as in | |
897 | // that case we have to consider the addend to determine | |
898 | // the value to use in a relocation. | |
a9a60db6 | 899 | if (!lv.is_section_symbol()) |
8d32f935 ILT |
900 | lv.set_output_value(os->output_address(this, shndx, |
901 | lv.input_value())); | |
a9a60db6 ILT |
902 | else |
903 | { | |
8d32f935 ILT |
904 | section_offset_type start = |
905 | os->starting_output_address(this, shndx); | |
a9a60db6 ILT |
906 | Merged_symbol_value<size>* msv = |
907 | new Merged_symbol_value<size>(lv.input_value(), start); | |
908 | lv.set_merged_symbol_value(msv); | |
909 | } | |
7bf1f802 ILT |
910 | } |
911 | else if (lv.is_tls_symbol()) | |
a9a60db6 | 912 | lv.set_output_value(os->tls_offset() |
7bf1f802 ILT |
913 | + mo[shndx].offset |
914 | + lv.input_value()); | |
b8e6aad9 | 915 | else |
a9a60db6 | 916 | lv.set_output_value(os->address() |
b8e6aad9 | 917 | + mo[shndx].offset |
7bf1f802 | 918 | + lv.input_value()); |
75f65a3e ILT |
919 | } |
920 | ||
7bf1f802 ILT |
921 | if (lv.needs_output_symtab_entry()) |
922 | { | |
923 | lv.set_output_symtab_index(index); | |
924 | ++index; | |
925 | } | |
926 | } | |
927 | return index; | |
928 | } | |
645f8123 | 929 | |
7bf1f802 | 930 | // Set the output dynamic symbol table indexes for the local variables. |
c06b7b0b | 931 | |
7bf1f802 ILT |
932 | template<int size, bool big_endian> |
933 | unsigned int | |
934 | Sized_relobj<size, big_endian>::do_set_local_dynsym_indexes(unsigned int index) | |
935 | { | |
936 | const unsigned int loccount = this->local_symbol_count_; | |
937 | for (unsigned int i = 1; i < loccount; ++i) | |
938 | { | |
939 | Symbol_value<size>& lv(this->local_values_[i]); | |
940 | if (lv.needs_output_dynsym_entry()) | |
941 | { | |
942 | lv.set_output_dynsym_index(index); | |
943 | ++index; | |
944 | } | |
75f65a3e | 945 | } |
7bf1f802 ILT |
946 | return index; |
947 | } | |
75f65a3e | 948 | |
7bf1f802 ILT |
949 | // Set the offset where local dynamic symbol information will be stored. |
950 | // Returns the count of local symbols contributed to the symbol table by | |
951 | // this object. | |
61ba1cf9 | 952 | |
7bf1f802 ILT |
953 | template<int size, bool big_endian> |
954 | unsigned int | |
955 | Sized_relobj<size, big_endian>::do_set_local_dynsym_offset(off_t off) | |
956 | { | |
957 | gold_assert(off == static_cast<off_t>(align_address(off, size >> 3))); | |
958 | this->local_dynsym_offset_ = off; | |
959 | return this->output_local_dynsym_count_; | |
75f65a3e ILT |
960 | } |
961 | ||
e727fa71 ILT |
962 | // Return the value of the local symbol symndx. |
963 | template<int size, bool big_endian> | |
964 | typename elfcpp::Elf_types<size>::Elf_Addr | |
965 | Sized_relobj<size, big_endian>::local_symbol_value(unsigned int symndx) const | |
966 | { | |
967 | gold_assert(symndx < this->local_symbol_count_); | |
968 | gold_assert(symndx < this->local_values_.size()); | |
969 | const Symbol_value<size>& lv(this->local_values_[symndx]); | |
970 | return lv.value(this, 0); | |
971 | } | |
972 | ||
61ba1cf9 ILT |
973 | // Write out the local symbols. |
974 | ||
975 | template<int size, bool big_endian> | |
976 | void | |
17a1d0a9 ILT |
977 | Sized_relobj<size, big_endian>::write_local_symbols( |
978 | Output_file* of, | |
979 | const Stringpool* sympool, | |
980 | const Stringpool* dynpool) | |
61ba1cf9 | 981 | { |
7bf1f802 | 982 | if (parameters->strip_all() && this->output_local_dynsym_count_ == 0) |
9e2dcb77 ILT |
983 | return; |
984 | ||
a3ad94ed | 985 | gold_assert(this->symtab_shndx_ != -1U); |
645f8123 | 986 | if (this->symtab_shndx_ == 0) |
61ba1cf9 ILT |
987 | { |
988 | // This object has no symbols. Weird but legal. | |
989 | return; | |
990 | } | |
991 | ||
992 | // Read the symbol table section header. | |
645f8123 ILT |
993 | const unsigned int symtab_shndx = this->symtab_shndx_; |
994 | typename This::Shdr symtabshdr(this, | |
995 | this->elf_file_.section_header(symtab_shndx)); | |
a3ad94ed | 996 | gold_assert(symtabshdr.get_sh_type() == elfcpp::SHT_SYMTAB); |
92e059d8 | 997 | const unsigned int loccount = this->local_symbol_count_; |
a3ad94ed | 998 | gold_assert(loccount == symtabshdr.get_sh_info()); |
61ba1cf9 ILT |
999 | |
1000 | // Read the local symbols. | |
1001 | const int sym_size = This::sym_size; | |
92e059d8 | 1002 | off_t locsize = loccount * sym_size; |
61ba1cf9 | 1003 | const unsigned char* psyms = this->get_view(symtabshdr.get_sh_offset(), |
9eb9fa57 | 1004 | locsize, false); |
61ba1cf9 | 1005 | |
61ba1cf9 | 1006 | // Read the symbol names. |
645f8123 | 1007 | const unsigned int strtab_shndx = symtabshdr.get_sh_link(); |
8383303e | 1008 | section_size_type strtab_size; |
645f8123 | 1009 | const unsigned char* pnamesu = this->section_contents(strtab_shndx, |
9eb9fa57 ILT |
1010 | &strtab_size, |
1011 | true); | |
61ba1cf9 ILT |
1012 | const char* pnames = reinterpret_cast<const char*>(pnamesu); |
1013 | ||
7bf1f802 ILT |
1014 | // Get views into the output file for the portions of the symbol table |
1015 | // and the dynamic symbol table that we will be writing. | |
61ba1cf9 | 1016 | off_t output_size = this->output_local_symbol_count_ * sym_size; |
f2619d6c | 1017 | unsigned char* oview = NULL; |
7bf1f802 ILT |
1018 | if (output_size > 0) |
1019 | oview = of->get_output_view(this->local_symbol_offset_, output_size); | |
1020 | ||
1021 | off_t dyn_output_size = this->output_local_dynsym_count_ * sym_size; | |
1022 | unsigned char* dyn_oview = NULL; | |
1023 | if (dyn_output_size > 0) | |
1024 | dyn_oview = of->get_output_view(this->local_dynsym_offset_, | |
1025 | dyn_output_size); | |
61ba1cf9 | 1026 | |
c06b7b0b ILT |
1027 | const std::vector<Map_to_output>& mo(this->map_to_output()); |
1028 | ||
a3ad94ed | 1029 | gold_assert(this->local_values_.size() == loccount); |
61ba1cf9 | 1030 | |
61ba1cf9 | 1031 | unsigned char* ov = oview; |
7bf1f802 | 1032 | unsigned char* dyn_ov = dyn_oview; |
c06b7b0b | 1033 | psyms += sym_size; |
92e059d8 | 1034 | for (unsigned int i = 1; i < loccount; ++i, psyms += sym_size) |
61ba1cf9 ILT |
1035 | { |
1036 | elfcpp::Sym<size, big_endian> isym(psyms); | |
f6ce93d6 | 1037 | |
61ba1cf9 ILT |
1038 | unsigned int st_shndx = isym.get_st_shndx(); |
1039 | if (st_shndx < elfcpp::SHN_LORESERVE) | |
1040 | { | |
a3ad94ed | 1041 | gold_assert(st_shndx < mo.size()); |
61ba1cf9 ILT |
1042 | if (mo[st_shndx].output_section == NULL) |
1043 | continue; | |
ead1e424 | 1044 | st_shndx = mo[st_shndx].output_section->out_shndx(); |
61ba1cf9 ILT |
1045 | } |
1046 | ||
7bf1f802 ILT |
1047 | // Write the symbol to the output symbol table. |
1048 | if (!parameters->strip_all() | |
1049 | && this->local_values_[i].needs_output_symtab_entry()) | |
1050 | { | |
1051 | elfcpp::Sym_write<size, big_endian> osym(ov); | |
1052 | ||
1053 | gold_assert(isym.get_st_name() < strtab_size); | |
1054 | const char* name = pnames + isym.get_st_name(); | |
1055 | osym.put_st_name(sympool->get_offset(name)); | |
1056 | osym.put_st_value(this->local_values_[i].value(this, 0)); | |
1057 | osym.put_st_size(isym.get_st_size()); | |
1058 | osym.put_st_info(isym.get_st_info()); | |
1059 | osym.put_st_other(isym.get_st_other()); | |
1060 | osym.put_st_shndx(st_shndx); | |
1061 | ||
1062 | ov += sym_size; | |
1063 | } | |
1064 | ||
1065 | // Write the symbol to the output dynamic symbol table. | |
1066 | if (this->local_values_[i].needs_output_dynsym_entry()) | |
1067 | { | |
1068 | gold_assert(dyn_ov < dyn_oview + dyn_output_size); | |
1069 | elfcpp::Sym_write<size, big_endian> osym(dyn_ov); | |
1070 | ||
1071 | gold_assert(isym.get_st_name() < strtab_size); | |
1072 | const char* name = pnames + isym.get_st_name(); | |
1073 | osym.put_st_name(dynpool->get_offset(name)); | |
1074 | osym.put_st_value(this->local_values_[i].value(this, 0)); | |
1075 | osym.put_st_size(isym.get_st_size()); | |
1076 | osym.put_st_info(isym.get_st_info()); | |
1077 | osym.put_st_other(isym.get_st_other()); | |
1078 | osym.put_st_shndx(st_shndx); | |
1079 | ||
1080 | dyn_ov += sym_size; | |
1081 | } | |
1082 | } | |
f6ce93d6 | 1083 | |
61ba1cf9 | 1084 | |
7bf1f802 ILT |
1085 | if (output_size > 0) |
1086 | { | |
1087 | gold_assert(ov - oview == output_size); | |
1088 | of->write_output_view(this->local_symbol_offset_, output_size, oview); | |
61ba1cf9 ILT |
1089 | } |
1090 | ||
7bf1f802 ILT |
1091 | if (dyn_output_size > 0) |
1092 | { | |
1093 | gold_assert(dyn_ov - dyn_oview == dyn_output_size); | |
1094 | of->write_output_view(this->local_dynsym_offset_, dyn_output_size, | |
1095 | dyn_oview); | |
1096 | } | |
61ba1cf9 ILT |
1097 | } |
1098 | ||
f7e2ee48 ILT |
1099 | // Set *INFO to symbolic information about the offset OFFSET in the |
1100 | // section SHNDX. Return true if we found something, false if we | |
1101 | // found nothing. | |
1102 | ||
1103 | template<int size, bool big_endian> | |
1104 | bool | |
1105 | Sized_relobj<size, big_endian>::get_symbol_location_info( | |
1106 | unsigned int shndx, | |
1107 | off_t offset, | |
1108 | Symbol_location_info* info) | |
1109 | { | |
1110 | if (this->symtab_shndx_ == 0) | |
1111 | return false; | |
1112 | ||
8383303e | 1113 | section_size_type symbols_size; |
f7e2ee48 ILT |
1114 | const unsigned char* symbols = this->section_contents(this->symtab_shndx_, |
1115 | &symbols_size, | |
1116 | false); | |
1117 | ||
1118 | unsigned int symbol_names_shndx = this->section_link(this->symtab_shndx_); | |
8383303e | 1119 | section_size_type names_size; |
f7e2ee48 ILT |
1120 | const unsigned char* symbol_names_u = |
1121 | this->section_contents(symbol_names_shndx, &names_size, false); | |
1122 | const char* symbol_names = reinterpret_cast<const char*>(symbol_names_u); | |
1123 | ||
1124 | const int sym_size = This::sym_size; | |
1125 | const size_t count = symbols_size / sym_size; | |
1126 | ||
1127 | const unsigned char* p = symbols; | |
1128 | for (size_t i = 0; i < count; ++i, p += sym_size) | |
1129 | { | |
1130 | elfcpp::Sym<size, big_endian> sym(p); | |
1131 | ||
1132 | if (sym.get_st_type() == elfcpp::STT_FILE) | |
1133 | { | |
1134 | if (sym.get_st_name() >= names_size) | |
1135 | info->source_file = "(invalid)"; | |
1136 | else | |
1137 | info->source_file = symbol_names + sym.get_st_name(); | |
1138 | } | |
1139 | else if (sym.get_st_shndx() == shndx | |
1140 | && static_cast<off_t>(sym.get_st_value()) <= offset | |
1141 | && (static_cast<off_t>(sym.get_st_value() + sym.get_st_size()) | |
5c2c6c95 | 1142 | > offset)) |
f7e2ee48 ILT |
1143 | { |
1144 | if (sym.get_st_name() > names_size) | |
1145 | info->enclosing_symbol_name = "(invalid)"; | |
1146 | else | |
a2b1aa12 ILT |
1147 | { |
1148 | info->enclosing_symbol_name = symbol_names + sym.get_st_name(); | |
1149 | if (parameters->demangle()) | |
1150 | { | |
1151 | char* demangled_name = cplus_demangle( | |
1152 | info->enclosing_symbol_name.c_str(), | |
1153 | DMGL_ANSI | DMGL_PARAMS); | |
1154 | if (demangled_name != NULL) | |
1155 | { | |
1156 | info->enclosing_symbol_name.assign(demangled_name); | |
1157 | free(demangled_name); | |
1158 | } | |
1159 | } | |
1160 | } | |
f7e2ee48 ILT |
1161 | return true; |
1162 | } | |
1163 | } | |
1164 | ||
1165 | return false; | |
1166 | } | |
1167 | ||
54dc6425 ILT |
1168 | // Input_objects methods. |
1169 | ||
008db82e ILT |
1170 | // Add a regular relocatable object to the list. Return false if this |
1171 | // object should be ignored. | |
f6ce93d6 | 1172 | |
008db82e | 1173 | bool |
54dc6425 ILT |
1174 | Input_objects::add_object(Object* obj) |
1175 | { | |
019cdb1a ILT |
1176 | Target* target = obj->target(); |
1177 | if (this->target_ == NULL) | |
1178 | this->target_ = target; | |
1179 | else if (this->target_ != target) | |
1180 | { | |
1181 | gold_error(_("%s: incompatible target"), obj->name().c_str()); | |
1182 | return false; | |
1183 | } | |
1184 | ||
008db82e | 1185 | if (!obj->is_dynamic()) |
f6ce93d6 | 1186 | this->relobj_list_.push_back(static_cast<Relobj*>(obj)); |
008db82e ILT |
1187 | else |
1188 | { | |
1189 | // See if this is a duplicate SONAME. | |
1190 | Dynobj* dynobj = static_cast<Dynobj*>(obj); | |
9a2d6984 | 1191 | const char* soname = dynobj->soname(); |
008db82e ILT |
1192 | |
1193 | std::pair<Unordered_set<std::string>::iterator, bool> ins = | |
9a2d6984 | 1194 | this->sonames_.insert(soname); |
008db82e ILT |
1195 | if (!ins.second) |
1196 | { | |
1197 | // We have already seen a dynamic object with this soname. | |
1198 | return false; | |
1199 | } | |
1200 | ||
1201 | this->dynobj_list_.push_back(dynobj); | |
9a2d6984 ILT |
1202 | |
1203 | // If this is -lc, remember the directory in which we found it. | |
1204 | // We use this when issuing warnings about undefined symbols: as | |
1205 | // a heuristic, we don't warn about system libraries found in | |
1206 | // the same directory as -lc. | |
1207 | if (strncmp(soname, "libc.so", 7) == 0) | |
1208 | { | |
1209 | const char* object_name = dynobj->name().c_str(); | |
1210 | const char* base = lbasename(object_name); | |
1211 | if (base != object_name) | |
1212 | this->system_library_directory_.assign(object_name, | |
1213 | base - 1 - object_name); | |
1214 | } | |
008db82e | 1215 | } |
75f65a3e | 1216 | |
96803768 | 1217 | set_parameters_target(target); |
9025d29d | 1218 | |
008db82e | 1219 | return true; |
54dc6425 ILT |
1220 | } |
1221 | ||
9a2d6984 ILT |
1222 | // Return whether an object was found in the system library directory. |
1223 | ||
1224 | bool | |
1225 | Input_objects::found_in_system_library_directory(const Object* object) const | |
1226 | { | |
1227 | return (!this->system_library_directory_.empty() | |
1228 | && object->name().compare(0, | |
1229 | this->system_library_directory_.size(), | |
1230 | this->system_library_directory_) == 0); | |
1231 | } | |
1232 | ||
e2827e5f ILT |
1233 | // For each dynamic object, record whether we've seen all of its |
1234 | // explicit dependencies. | |
1235 | ||
1236 | void | |
1237 | Input_objects::check_dynamic_dependencies() const | |
1238 | { | |
1239 | for (Dynobj_list::const_iterator p = this->dynobj_list_.begin(); | |
1240 | p != this->dynobj_list_.end(); | |
1241 | ++p) | |
1242 | { | |
1243 | const Dynobj::Needed& needed((*p)->needed()); | |
1244 | bool found_all = true; | |
1245 | for (Dynobj::Needed::const_iterator pneeded = needed.begin(); | |
1246 | pneeded != needed.end(); | |
1247 | ++pneeded) | |
1248 | { | |
1249 | if (this->sonames_.find(*pneeded) == this->sonames_.end()) | |
1250 | { | |
1251 | found_all = false; | |
1252 | break; | |
1253 | } | |
1254 | } | |
1255 | (*p)->set_has_unknown_needed_entries(!found_all); | |
1256 | } | |
1257 | } | |
1258 | ||
92e059d8 ILT |
1259 | // Relocate_info methods. |
1260 | ||
1261 | // Return a string describing the location of a relocation. This is | |
1262 | // only used in error messages. | |
1263 | ||
1264 | template<int size, bool big_endian> | |
1265 | std::string | |
f7e2ee48 | 1266 | Relocate_info<size, big_endian>::location(size_t, off_t offset) const |
92e059d8 | 1267 | { |
5c2c6c95 ILT |
1268 | // See if we can get line-number information from debugging sections. |
1269 | std::string filename; | |
1270 | std::string file_and_lineno; // Better than filename-only, if available. | |
4c50553d | 1271 | |
a55ce7fe | 1272 | Sized_dwarf_line_info<size, big_endian> line_info(this->object); |
24badc65 ILT |
1273 | // This will be "" if we failed to parse the debug info for any reason. |
1274 | file_and_lineno = line_info.addr2line(this->data_shndx, offset); | |
4c50553d | 1275 | |
92e059d8 | 1276 | std::string ret(this->object->name()); |
f7e2ee48 ILT |
1277 | ret += ':'; |
1278 | Symbol_location_info info; | |
1279 | if (this->object->get_symbol_location_info(this->data_shndx, offset, &info)) | |
1280 | { | |
1281 | ret += " in function "; | |
1282 | ret += info.enclosing_symbol_name; | |
1283 | ret += ":"; | |
5c2c6c95 ILT |
1284 | filename = info.source_file; |
1285 | } | |
1286 | ||
1287 | if (!file_and_lineno.empty()) | |
1288 | ret += file_and_lineno; | |
1289 | else | |
1290 | { | |
1291 | if (!filename.empty()) | |
1292 | ret += filename; | |
1293 | ret += "("; | |
1294 | ret += this->object->section_name(this->data_shndx); | |
1295 | char buf[100]; | |
1296 | // Offsets into sections have to be positive. | |
1297 | snprintf(buf, sizeof(buf), "+0x%lx", static_cast<long>(offset)); | |
1298 | ret += buf; | |
1299 | ret += ")"; | |
f7e2ee48 | 1300 | } |
92e059d8 ILT |
1301 | return ret; |
1302 | } | |
1303 | ||
bae7f79e ILT |
1304 | } // End namespace gold. |
1305 | ||
1306 | namespace | |
1307 | { | |
1308 | ||
1309 | using namespace gold; | |
1310 | ||
1311 | // Read an ELF file with the header and return the appropriate | |
1312 | // instance of Object. | |
1313 | ||
1314 | template<int size, bool big_endian> | |
1315 | Object* | |
1316 | make_elf_sized_object(const std::string& name, Input_file* input_file, | |
1317 | off_t offset, const elfcpp::Ehdr<size, big_endian>& ehdr) | |
1318 | { | |
1319 | int et = ehdr.get_e_type(); | |
bae7f79e ILT |
1320 | if (et == elfcpp::ET_REL) |
1321 | { | |
f6ce93d6 ILT |
1322 | Sized_relobj<size, big_endian>* obj = |
1323 | new Sized_relobj<size, big_endian>(name, input_file, offset, ehdr); | |
bae7f79e ILT |
1324 | obj->setup(ehdr); |
1325 | return obj; | |
1326 | } | |
dbe717ef ILT |
1327 | else if (et == elfcpp::ET_DYN) |
1328 | { | |
1329 | Sized_dynobj<size, big_endian>* obj = | |
1330 | new Sized_dynobj<size, big_endian>(name, input_file, offset, ehdr); | |
1331 | obj->setup(ehdr); | |
1332 | return obj; | |
1333 | } | |
bae7f79e ILT |
1334 | else |
1335 | { | |
75f2446e ILT |
1336 | gold_error(_("%s: unsupported ELF file type %d"), |
1337 | name.c_str(), et); | |
1338 | return NULL; | |
bae7f79e ILT |
1339 | } |
1340 | } | |
1341 | ||
1342 | } // End anonymous namespace. | |
1343 | ||
1344 | namespace gold | |
1345 | { | |
1346 | ||
1347 | // Read an ELF file and return the appropriate instance of Object. | |
1348 | ||
1349 | Object* | |
1350 | make_elf_object(const std::string& name, Input_file* input_file, off_t offset, | |
8383303e | 1351 | const unsigned char* p, section_offset_type bytes) |
bae7f79e ILT |
1352 | { |
1353 | if (bytes < elfcpp::EI_NIDENT) | |
1354 | { | |
75f2446e ILT |
1355 | gold_error(_("%s: ELF file too short"), name.c_str()); |
1356 | return NULL; | |
bae7f79e ILT |
1357 | } |
1358 | ||
1359 | int v = p[elfcpp::EI_VERSION]; | |
1360 | if (v != elfcpp::EV_CURRENT) | |
1361 | { | |
1362 | if (v == elfcpp::EV_NONE) | |
75f2446e | 1363 | gold_error(_("%s: invalid ELF version 0"), name.c_str()); |
bae7f79e | 1364 | else |
75f2446e ILT |
1365 | gold_error(_("%s: unsupported ELF version %d"), name.c_str(), v); |
1366 | return NULL; | |
bae7f79e ILT |
1367 | } |
1368 | ||
1369 | int c = p[elfcpp::EI_CLASS]; | |
1370 | if (c == elfcpp::ELFCLASSNONE) | |
1371 | { | |
75f2446e ILT |
1372 | gold_error(_("%s: invalid ELF class 0"), name.c_str()); |
1373 | return NULL; | |
bae7f79e ILT |
1374 | } |
1375 | else if (c != elfcpp::ELFCLASS32 | |
1376 | && c != elfcpp::ELFCLASS64) | |
1377 | { | |
75f2446e ILT |
1378 | gold_error(_("%s: unsupported ELF class %d"), name.c_str(), c); |
1379 | return NULL; | |
bae7f79e ILT |
1380 | } |
1381 | ||
1382 | int d = p[elfcpp::EI_DATA]; | |
1383 | if (d == elfcpp::ELFDATANONE) | |
1384 | { | |
75f2446e ILT |
1385 | gold_error(_("%s: invalid ELF data encoding"), name.c_str()); |
1386 | return NULL; | |
bae7f79e ILT |
1387 | } |
1388 | else if (d != elfcpp::ELFDATA2LSB | |
1389 | && d != elfcpp::ELFDATA2MSB) | |
1390 | { | |
75f2446e ILT |
1391 | gold_error(_("%s: unsupported ELF data encoding %d"), name.c_str(), d); |
1392 | return NULL; | |
bae7f79e ILT |
1393 | } |
1394 | ||
1395 | bool big_endian = d == elfcpp::ELFDATA2MSB; | |
1396 | ||
1397 | if (c == elfcpp::ELFCLASS32) | |
1398 | { | |
1399 | if (bytes < elfcpp::Elf_sizes<32>::ehdr_size) | |
1400 | { | |
75f2446e ILT |
1401 | gold_error(_("%s: ELF file too short"), name.c_str()); |
1402 | return NULL; | |
bae7f79e ILT |
1403 | } |
1404 | if (big_endian) | |
1405 | { | |
193a53d9 | 1406 | #ifdef HAVE_TARGET_32_BIG |
bae7f79e ILT |
1407 | elfcpp::Ehdr<32, true> ehdr(p); |
1408 | return make_elf_sized_object<32, true>(name, input_file, | |
1409 | offset, ehdr); | |
193a53d9 | 1410 | #else |
75f2446e ILT |
1411 | gold_error(_("%s: not configured to support " |
1412 | "32-bit big-endian object"), | |
1413 | name.c_str()); | |
1414 | return NULL; | |
193a53d9 | 1415 | #endif |
bae7f79e ILT |
1416 | } |
1417 | else | |
1418 | { | |
193a53d9 | 1419 | #ifdef HAVE_TARGET_32_LITTLE |
bae7f79e ILT |
1420 | elfcpp::Ehdr<32, false> ehdr(p); |
1421 | return make_elf_sized_object<32, false>(name, input_file, | |
1422 | offset, ehdr); | |
193a53d9 | 1423 | #else |
75f2446e ILT |
1424 | gold_error(_("%s: not configured to support " |
1425 | "32-bit little-endian object"), | |
1426 | name.c_str()); | |
1427 | return NULL; | |
193a53d9 | 1428 | #endif |
bae7f79e ILT |
1429 | } |
1430 | } | |
1431 | else | |
1432 | { | |
1433 | if (bytes < elfcpp::Elf_sizes<32>::ehdr_size) | |
1434 | { | |
75f2446e ILT |
1435 | gold_error(_("%s: ELF file too short"), name.c_str()); |
1436 | return NULL; | |
bae7f79e ILT |
1437 | } |
1438 | if (big_endian) | |
1439 | { | |
193a53d9 | 1440 | #ifdef HAVE_TARGET_64_BIG |
bae7f79e ILT |
1441 | elfcpp::Ehdr<64, true> ehdr(p); |
1442 | return make_elf_sized_object<64, true>(name, input_file, | |
1443 | offset, ehdr); | |
193a53d9 | 1444 | #else |
75f2446e ILT |
1445 | gold_error(_("%s: not configured to support " |
1446 | "64-bit big-endian object"), | |
1447 | name.c_str()); | |
1448 | return NULL; | |
193a53d9 | 1449 | #endif |
bae7f79e ILT |
1450 | } |
1451 | else | |
1452 | { | |
193a53d9 | 1453 | #ifdef HAVE_TARGET_64_LITTLE |
bae7f79e ILT |
1454 | elfcpp::Ehdr<64, false> ehdr(p); |
1455 | return make_elf_sized_object<64, false>(name, input_file, | |
1456 | offset, ehdr); | |
193a53d9 | 1457 | #else |
75f2446e ILT |
1458 | gold_error(_("%s: not configured to support " |
1459 | "64-bit little-endian object"), | |
1460 | name.c_str()); | |
1461 | return NULL; | |
193a53d9 | 1462 | #endif |
bae7f79e ILT |
1463 | } |
1464 | } | |
1465 | } | |
1466 | ||
1467 | // Instantiate the templates we need. We could use the configure | |
1468 | // script to restrict this to only the ones for implemented targets. | |
1469 | ||
193a53d9 | 1470 | #ifdef HAVE_TARGET_32_LITTLE |
bae7f79e | 1471 | template |
f6ce93d6 | 1472 | class Sized_relobj<32, false>; |
193a53d9 | 1473 | #endif |
bae7f79e | 1474 | |
193a53d9 | 1475 | #ifdef HAVE_TARGET_32_BIG |
bae7f79e | 1476 | template |
f6ce93d6 | 1477 | class Sized_relobj<32, true>; |
193a53d9 | 1478 | #endif |
bae7f79e | 1479 | |
193a53d9 | 1480 | #ifdef HAVE_TARGET_64_LITTLE |
bae7f79e | 1481 | template |
f6ce93d6 | 1482 | class Sized_relobj<64, false>; |
193a53d9 | 1483 | #endif |
bae7f79e | 1484 | |
193a53d9 | 1485 | #ifdef HAVE_TARGET_64_BIG |
bae7f79e | 1486 | template |
f6ce93d6 | 1487 | class Sized_relobj<64, true>; |
193a53d9 | 1488 | #endif |
bae7f79e | 1489 | |
193a53d9 | 1490 | #ifdef HAVE_TARGET_32_LITTLE |
92e059d8 ILT |
1491 | template |
1492 | struct Relocate_info<32, false>; | |
193a53d9 | 1493 | #endif |
92e059d8 | 1494 | |
193a53d9 | 1495 | #ifdef HAVE_TARGET_32_BIG |
92e059d8 ILT |
1496 | template |
1497 | struct Relocate_info<32, true>; | |
193a53d9 | 1498 | #endif |
92e059d8 | 1499 | |
193a53d9 | 1500 | #ifdef HAVE_TARGET_64_LITTLE |
92e059d8 ILT |
1501 | template |
1502 | struct Relocate_info<64, false>; | |
193a53d9 | 1503 | #endif |
92e059d8 | 1504 | |
193a53d9 | 1505 | #ifdef HAVE_TARGET_64_BIG |
92e059d8 ILT |
1506 | template |
1507 | struct Relocate_info<64, true>; | |
193a53d9 | 1508 | #endif |
92e059d8 | 1509 | |
bae7f79e | 1510 | } // End namespace gold. |