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bae7f79e ILT |
1 | // object.cc -- support for an object file for linking in gold |
2 | ||
ebdbb458 | 3 | // Copyright 2006, 2007, 2008 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 | ||
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" |
92de84a6 | 36 | #include "cref.h" |
4c50553d | 37 | #include "reloc.h" |
f6ce93d6 ILT |
38 | #include "object.h" |
39 | #include "dynobj.h" | |
bae7f79e ILT |
40 | |
41 | namespace gold | |
42 | { | |
43 | ||
d491d34e ILT |
44 | // Class Xindex. |
45 | ||
46 | // Initialize the symtab_xindex_ array. Find the SHT_SYMTAB_SHNDX | |
47 | // section and read it in. SYMTAB_SHNDX is the index of the symbol | |
48 | // table we care about. | |
49 | ||
50 | template<int size, bool big_endian> | |
51 | void | |
52 | Xindex::initialize_symtab_xindex(Object* object, unsigned int symtab_shndx) | |
53 | { | |
54 | if (!this->symtab_xindex_.empty()) | |
55 | return; | |
56 | ||
57 | gold_assert(symtab_shndx != 0); | |
58 | ||
59 | // Look through the sections in reverse order, on the theory that it | |
60 | // is more likely to be near the end than the beginning. | |
61 | unsigned int i = object->shnum(); | |
62 | while (i > 0) | |
63 | { | |
64 | --i; | |
65 | if (object->section_type(i) == elfcpp::SHT_SYMTAB_SHNDX | |
66 | && this->adjust_shndx(object->section_link(i)) == symtab_shndx) | |
67 | { | |
68 | this->read_symtab_xindex<size, big_endian>(object, i, NULL); | |
69 | return; | |
70 | } | |
71 | } | |
72 | ||
73 | object->error(_("missing SHT_SYMTAB_SHNDX section")); | |
74 | } | |
75 | ||
76 | // Read in the symtab_xindex_ array, given the section index of the | |
77 | // SHT_SYMTAB_SHNDX section. If PSHDRS is not NULL, it points at the | |
78 | // section headers. | |
79 | ||
80 | template<int size, bool big_endian> | |
81 | void | |
82 | Xindex::read_symtab_xindex(Object* object, unsigned int xindex_shndx, | |
83 | const unsigned char* pshdrs) | |
84 | { | |
85 | section_size_type bytecount; | |
86 | const unsigned char* contents; | |
87 | if (pshdrs == NULL) | |
88 | contents = object->section_contents(xindex_shndx, &bytecount, false); | |
89 | else | |
90 | { | |
91 | const unsigned char* p = (pshdrs | |
92 | + (xindex_shndx | |
93 | * elfcpp::Elf_sizes<size>::shdr_size)); | |
94 | typename elfcpp::Shdr<size, big_endian> shdr(p); | |
95 | bytecount = convert_to_section_size_type(shdr.get_sh_size()); | |
96 | contents = object->get_view(shdr.get_sh_offset(), bytecount, true, false); | |
97 | } | |
98 | ||
99 | gold_assert(this->symtab_xindex_.empty()); | |
100 | this->symtab_xindex_.reserve(bytecount / 4); | |
101 | for (section_size_type i = 0; i < bytecount; i += 4) | |
102 | { | |
103 | unsigned int shndx = elfcpp::Swap<32, big_endian>::readval(contents + i); | |
104 | // We preadjust the section indexes we save. | |
105 | this->symtab_xindex_.push_back(this->adjust_shndx(shndx)); | |
106 | } | |
107 | } | |
108 | ||
109 | // Symbol symndx has a section of SHN_XINDEX; return the real section | |
110 | // index. | |
111 | ||
112 | unsigned int | |
113 | Xindex::sym_xindex_to_shndx(Object* object, unsigned int symndx) | |
114 | { | |
115 | if (symndx >= this->symtab_xindex_.size()) | |
116 | { | |
117 | object->error(_("symbol %u out of range for SHT_SYMTAB_SHNDX section"), | |
118 | symndx); | |
119 | return elfcpp::SHN_UNDEF; | |
120 | } | |
121 | unsigned int shndx = this->symtab_xindex_[symndx]; | |
122 | if (shndx < elfcpp::SHN_LORESERVE || shndx >= object->shnum()) | |
123 | { | |
124 | object->error(_("extended index for symbol %u out of range: %u"), | |
125 | symndx, shndx); | |
126 | return elfcpp::SHN_UNDEF; | |
127 | } | |
128 | return shndx; | |
129 | } | |
130 | ||
645f8123 ILT |
131 | // Class Object. |
132 | ||
dbe717ef ILT |
133 | // Set the target based on fields in the ELF file header. |
134 | ||
135 | void | |
136 | Object::set_target(int machine, int size, bool big_endian, int osabi, | |
137 | int abiversion) | |
138 | { | |
139 | Target* target = select_target(machine, size, big_endian, osabi, abiversion); | |
140 | if (target == NULL) | |
75f2446e ILT |
141 | gold_fatal(_("%s: unsupported ELF machine number %d"), |
142 | this->name().c_str(), machine); | |
dbe717ef ILT |
143 | this->target_ = target; |
144 | } | |
145 | ||
75f2446e ILT |
146 | // Report an error for this object file. This is used by the |
147 | // elfcpp::Elf_file interface, and also called by the Object code | |
148 | // itself. | |
645f8123 ILT |
149 | |
150 | void | |
75f2446e | 151 | Object::error(const char* format, ...) const |
645f8123 ILT |
152 | { |
153 | va_list args; | |
645f8123 | 154 | va_start(args, format); |
75f2446e ILT |
155 | char* buf = NULL; |
156 | if (vasprintf(&buf, format, args) < 0) | |
157 | gold_nomem(); | |
645f8123 | 158 | va_end(args); |
75f2446e ILT |
159 | gold_error(_("%s: %s"), this->name().c_str(), buf); |
160 | free(buf); | |
645f8123 ILT |
161 | } |
162 | ||
163 | // Return a view of the contents of a section. | |
164 | ||
165 | const unsigned char* | |
8383303e ILT |
166 | Object::section_contents(unsigned int shndx, section_size_type* plen, |
167 | bool cache) | |
645f8123 ILT |
168 | { |
169 | Location loc(this->do_section_contents(shndx)); | |
8383303e | 170 | *plen = convert_to_section_size_type(loc.data_size); |
39d0cb0e | 171 | return this->get_view(loc.file_offset, *plen, true, cache); |
645f8123 ILT |
172 | } |
173 | ||
dbe717ef ILT |
174 | // Read the section data into SD. This is code common to Sized_relobj |
175 | // and Sized_dynobj, so we put it into Object. | |
176 | ||
177 | template<int size, bool big_endian> | |
178 | void | |
179 | Object::read_section_data(elfcpp::Elf_file<size, big_endian, Object>* elf_file, | |
180 | Read_symbols_data* sd) | |
181 | { | |
182 | const int shdr_size = elfcpp::Elf_sizes<size>::shdr_size; | |
183 | ||
184 | // Read the section headers. | |
185 | const off_t shoff = elf_file->shoff(); | |
186 | const unsigned int shnum = this->shnum(); | |
39d0cb0e ILT |
187 | sd->section_headers = this->get_lasting_view(shoff, shnum * shdr_size, |
188 | true, true); | |
dbe717ef ILT |
189 | |
190 | // Read the section names. | |
191 | const unsigned char* pshdrs = sd->section_headers->data(); | |
192 | const unsigned char* pshdrnames = pshdrs + elf_file->shstrndx() * shdr_size; | |
193 | typename elfcpp::Shdr<size, big_endian> shdrnames(pshdrnames); | |
194 | ||
195 | if (shdrnames.get_sh_type() != elfcpp::SHT_STRTAB) | |
75f2446e ILT |
196 | this->error(_("section name section has wrong type: %u"), |
197 | static_cast<unsigned int>(shdrnames.get_sh_type())); | |
dbe717ef | 198 | |
8383303e ILT |
199 | sd->section_names_size = |
200 | convert_to_section_size_type(shdrnames.get_sh_size()); | |
dbe717ef | 201 | sd->section_names = this->get_lasting_view(shdrnames.get_sh_offset(), |
39d0cb0e ILT |
202 | sd->section_names_size, false, |
203 | false); | |
dbe717ef ILT |
204 | } |
205 | ||
206 | // If NAME is the name of a special .gnu.warning section, arrange for | |
207 | // the warning to be issued. SHNDX is the section index. Return | |
208 | // whether it is a warning section. | |
209 | ||
210 | bool | |
211 | Object::handle_gnu_warning_section(const char* name, unsigned int shndx, | |
212 | Symbol_table* symtab) | |
213 | { | |
214 | const char warn_prefix[] = ".gnu.warning."; | |
215 | const int warn_prefix_len = sizeof warn_prefix - 1; | |
216 | if (strncmp(name, warn_prefix, warn_prefix_len) == 0) | |
217 | { | |
cb295612 ILT |
218 | // Read the section contents to get the warning text. It would |
219 | // be nicer if we only did this if we have to actually issue a | |
220 | // warning. Unfortunately, warnings are issued as we relocate | |
221 | // sections. That means that we can not lock the object then, | |
222 | // as we might try to issue the same warning multiple times | |
223 | // simultaneously. | |
224 | section_size_type len; | |
225 | const unsigned char* contents = this->section_contents(shndx, &len, | |
226 | false); | |
227 | std::string warning(reinterpret_cast<const char*>(contents), len); | |
228 | symtab->add_warning(name + warn_prefix_len, this, warning); | |
dbe717ef ILT |
229 | return true; |
230 | } | |
231 | return false; | |
232 | } | |
233 | ||
f6ce93d6 | 234 | // Class Sized_relobj. |
bae7f79e ILT |
235 | |
236 | template<int size, bool big_endian> | |
f6ce93d6 | 237 | Sized_relobj<size, big_endian>::Sized_relobj( |
bae7f79e ILT |
238 | const std::string& name, |
239 | Input_file* input_file, | |
240 | off_t offset, | |
241 | const elfcpp::Ehdr<size, big_endian>& ehdr) | |
f6ce93d6 | 242 | : Relobj(name, input_file, offset), |
645f8123 | 243 | elf_file_(this, ehdr), |
dbe717ef | 244 | symtab_shndx_(-1U), |
61ba1cf9 ILT |
245 | local_symbol_count_(0), |
246 | output_local_symbol_count_(0), | |
7bf1f802 | 247 | output_local_dynsym_count_(0), |
730cdc88 | 248 | symbols_(), |
92de84a6 | 249 | defined_count_(0), |
61ba1cf9 | 250 | local_symbol_offset_(0), |
7bf1f802 | 251 | local_dynsym_offset_(0), |
e727fa71 | 252 | local_values_(), |
730cdc88 | 253 | local_got_offsets_(), |
ef9beddf ILT |
254 | kept_comdat_sections_(), |
255 | comdat_groups_(), | |
730cdc88 | 256 | has_eh_frame_(false) |
bae7f79e | 257 | { |
bae7f79e ILT |
258 | } |
259 | ||
260 | template<int size, bool big_endian> | |
f6ce93d6 | 261 | Sized_relobj<size, big_endian>::~Sized_relobj() |
bae7f79e ILT |
262 | { |
263 | } | |
264 | ||
645f8123 | 265 | // Set up an object file based on the file header. This sets up the |
bae7f79e ILT |
266 | // target and reads the section information. |
267 | ||
268 | template<int size, bool big_endian> | |
269 | void | |
f6ce93d6 | 270 | Sized_relobj<size, big_endian>::setup( |
bae7f79e ILT |
271 | const elfcpp::Ehdr<size, big_endian>& ehdr) |
272 | { | |
dbe717ef ILT |
273 | this->set_target(ehdr.get_e_machine(), size, big_endian, |
274 | ehdr.get_e_ident()[elfcpp::EI_OSABI], | |
275 | ehdr.get_e_ident()[elfcpp::EI_ABIVERSION]); | |
12e14209 | 276 | |
dbe717ef | 277 | const unsigned int shnum = this->elf_file_.shnum(); |
a2fb1b05 | 278 | this->set_shnum(shnum); |
dbe717ef | 279 | } |
12e14209 | 280 | |
dbe717ef ILT |
281 | // Find the SHT_SYMTAB section, given the section headers. The ELF |
282 | // standard says that maybe in the future there can be more than one | |
283 | // SHT_SYMTAB section. Until somebody figures out how that could | |
284 | // work, we assume there is only one. | |
12e14209 | 285 | |
dbe717ef ILT |
286 | template<int size, bool big_endian> |
287 | void | |
288 | Sized_relobj<size, big_endian>::find_symtab(const unsigned char* pshdrs) | |
289 | { | |
290 | const unsigned int shnum = this->shnum(); | |
291 | this->symtab_shndx_ = 0; | |
292 | if (shnum > 0) | |
bae7f79e | 293 | { |
dbe717ef ILT |
294 | // Look through the sections in reverse order, since gas tends |
295 | // to put the symbol table at the end. | |
296 | const unsigned char* p = pshdrs + shnum * This::shdr_size; | |
297 | unsigned int i = shnum; | |
d491d34e ILT |
298 | unsigned int xindex_shndx = 0; |
299 | unsigned int xindex_link = 0; | |
dbe717ef | 300 | while (i > 0) |
bae7f79e | 301 | { |
dbe717ef ILT |
302 | --i; |
303 | p -= This::shdr_size; | |
304 | typename This::Shdr shdr(p); | |
305 | if (shdr.get_sh_type() == elfcpp::SHT_SYMTAB) | |
306 | { | |
307 | this->symtab_shndx_ = i; | |
d491d34e ILT |
308 | if (xindex_shndx > 0 && xindex_link == i) |
309 | { | |
310 | Xindex* xindex = | |
311 | new Xindex(this->elf_file_.large_shndx_offset()); | |
312 | xindex->read_symtab_xindex<size, big_endian>(this, | |
313 | xindex_shndx, | |
314 | pshdrs); | |
315 | this->set_xindex(xindex); | |
316 | } | |
dbe717ef ILT |
317 | break; |
318 | } | |
d491d34e ILT |
319 | |
320 | // Try to pick up the SHT_SYMTAB_SHNDX section, if there is | |
321 | // one. This will work if it follows the SHT_SYMTAB | |
322 | // section. | |
323 | if (shdr.get_sh_type() == elfcpp::SHT_SYMTAB_SHNDX) | |
324 | { | |
325 | xindex_shndx = i; | |
326 | xindex_link = this->adjust_shndx(shdr.get_sh_link()); | |
327 | } | |
bae7f79e | 328 | } |
bae7f79e ILT |
329 | } |
330 | } | |
331 | ||
d491d34e ILT |
332 | // Return the Xindex structure to use for object with lots of |
333 | // sections. | |
334 | ||
335 | template<int size, bool big_endian> | |
336 | Xindex* | |
337 | Sized_relobj<size, big_endian>::do_initialize_xindex() | |
338 | { | |
339 | gold_assert(this->symtab_shndx_ != -1U); | |
340 | Xindex* xindex = new Xindex(this->elf_file_.large_shndx_offset()); | |
341 | xindex->initialize_symtab_xindex<size, big_endian>(this, this->symtab_shndx_); | |
342 | return xindex; | |
343 | } | |
344 | ||
730cdc88 ILT |
345 | // Return whether SHDR has the right type and flags to be a GNU |
346 | // .eh_frame section. | |
347 | ||
348 | template<int size, bool big_endian> | |
349 | bool | |
350 | Sized_relobj<size, big_endian>::check_eh_frame_flags( | |
351 | const elfcpp::Shdr<size, big_endian>* shdr) const | |
352 | { | |
2c38906f | 353 | return (shdr->get_sh_type() == elfcpp::SHT_PROGBITS |
1650c4ff | 354 | && (shdr->get_sh_flags() & elfcpp::SHF_ALLOC) != 0); |
730cdc88 ILT |
355 | } |
356 | ||
357 | // Return whether there is a GNU .eh_frame section, given the section | |
358 | // headers and the section names. | |
359 | ||
360 | template<int size, bool big_endian> | |
361 | bool | |
8383303e ILT |
362 | Sized_relobj<size, big_endian>::find_eh_frame( |
363 | const unsigned char* pshdrs, | |
364 | const char* names, | |
365 | section_size_type names_size) const | |
730cdc88 ILT |
366 | { |
367 | const unsigned int shnum = this->shnum(); | |
368 | const unsigned char* p = pshdrs + This::shdr_size; | |
369 | for (unsigned int i = 1; i < shnum; ++i, p += This::shdr_size) | |
370 | { | |
371 | typename This::Shdr shdr(p); | |
372 | if (this->check_eh_frame_flags(&shdr)) | |
373 | { | |
374 | if (shdr.get_sh_name() >= names_size) | |
375 | { | |
376 | this->error(_("bad section name offset for section %u: %lu"), | |
377 | i, static_cast<unsigned long>(shdr.get_sh_name())); | |
378 | continue; | |
379 | } | |
380 | ||
381 | const char* name = names + shdr.get_sh_name(); | |
382 | if (strcmp(name, ".eh_frame") == 0) | |
383 | return true; | |
384 | } | |
385 | } | |
386 | return false; | |
387 | } | |
388 | ||
12e14209 | 389 | // Read the sections and symbols from an object file. |
bae7f79e ILT |
390 | |
391 | template<int size, bool big_endian> | |
12e14209 | 392 | void |
f6ce93d6 | 393 | Sized_relobj<size, big_endian>::do_read_symbols(Read_symbols_data* sd) |
bae7f79e | 394 | { |
dbe717ef | 395 | this->read_section_data(&this->elf_file_, sd); |
12e14209 | 396 | |
dbe717ef ILT |
397 | const unsigned char* const pshdrs = sd->section_headers->data(); |
398 | ||
399 | this->find_symtab(pshdrs); | |
12e14209 | 400 | |
730cdc88 ILT |
401 | const unsigned char* namesu = sd->section_names->data(); |
402 | const char* names = reinterpret_cast<const char*>(namesu); | |
1650c4ff ILT |
403 | if (memmem(names, sd->section_names_size, ".eh_frame", 10) != NULL) |
404 | { | |
405 | if (this->find_eh_frame(pshdrs, names, sd->section_names_size)) | |
406 | this->has_eh_frame_ = true; | |
407 | } | |
730cdc88 | 408 | |
75f2446e ILT |
409 | sd->symbols = NULL; |
410 | sd->symbols_size = 0; | |
730cdc88 | 411 | sd->external_symbols_offset = 0; |
75f2446e ILT |
412 | sd->symbol_names = NULL; |
413 | sd->symbol_names_size = 0; | |
414 | ||
645f8123 | 415 | if (this->symtab_shndx_ == 0) |
bae7f79e ILT |
416 | { |
417 | // No symbol table. Weird but legal. | |
12e14209 | 418 | return; |
bae7f79e ILT |
419 | } |
420 | ||
12e14209 ILT |
421 | // Get the symbol table section header. |
422 | typename This::Shdr symtabshdr(pshdrs | |
645f8123 | 423 | + this->symtab_shndx_ * This::shdr_size); |
a3ad94ed | 424 | gold_assert(symtabshdr.get_sh_type() == elfcpp::SHT_SYMTAB); |
bae7f79e | 425 | |
730cdc88 ILT |
426 | // If this object has a .eh_frame section, we need all the symbols. |
427 | // Otherwise we only need the external symbols. While it would be | |
428 | // simpler to just always read all the symbols, I've seen object | |
429 | // files with well over 2000 local symbols, which for a 64-bit | |
430 | // object file format is over 5 pages that we don't need to read | |
431 | // now. | |
432 | ||
75f65a3e | 433 | const int sym_size = This::sym_size; |
92e059d8 ILT |
434 | const unsigned int loccount = symtabshdr.get_sh_info(); |
435 | this->local_symbol_count_ = loccount; | |
7bf1f802 | 436 | this->local_values_.resize(loccount); |
8383303e | 437 | section_offset_type locsize = loccount * sym_size; |
730cdc88 | 438 | off_t dataoff = symtabshdr.get_sh_offset(); |
8383303e ILT |
439 | section_size_type datasize = |
440 | convert_to_section_size_type(symtabshdr.get_sh_size()); | |
730cdc88 | 441 | off_t extoff = dataoff + locsize; |
8383303e | 442 | section_size_type extsize = datasize - locsize; |
75f65a3e | 443 | |
730cdc88 | 444 | off_t readoff = this->has_eh_frame_ ? dataoff : extoff; |
8383303e | 445 | section_size_type readsize = this->has_eh_frame_ ? datasize : extsize; |
730cdc88 | 446 | |
3f2e6a2d CC |
447 | if (readsize == 0) |
448 | { | |
449 | // No external symbols. Also weird but also legal. | |
450 | return; | |
451 | } | |
452 | ||
39d0cb0e | 453 | File_view* fvsymtab = this->get_lasting_view(readoff, readsize, true, false); |
bae7f79e ILT |
454 | |
455 | // Read the section header for the symbol names. | |
d491d34e | 456 | unsigned int strtab_shndx = this->adjust_shndx(symtabshdr.get_sh_link()); |
dbe717ef | 457 | if (strtab_shndx >= this->shnum()) |
bae7f79e | 458 | { |
75f2446e ILT |
459 | this->error(_("invalid symbol table name index: %u"), strtab_shndx); |
460 | return; | |
bae7f79e | 461 | } |
dbe717ef | 462 | typename This::Shdr strtabshdr(pshdrs + strtab_shndx * This::shdr_size); |
bae7f79e ILT |
463 | if (strtabshdr.get_sh_type() != elfcpp::SHT_STRTAB) |
464 | { | |
75f2446e ILT |
465 | this->error(_("symbol table name section has wrong type: %u"), |
466 | static_cast<unsigned int>(strtabshdr.get_sh_type())); | |
467 | return; | |
bae7f79e ILT |
468 | } |
469 | ||
470 | // Read the symbol names. | |
471 | File_view* fvstrtab = this->get_lasting_view(strtabshdr.get_sh_offset(), | |
39d0cb0e ILT |
472 | strtabshdr.get_sh_size(), |
473 | false, true); | |
bae7f79e | 474 | |
12e14209 | 475 | sd->symbols = fvsymtab; |
730cdc88 ILT |
476 | sd->symbols_size = readsize; |
477 | sd->external_symbols_offset = this->has_eh_frame_ ? locsize : 0; | |
12e14209 | 478 | sd->symbol_names = fvstrtab; |
8383303e ILT |
479 | sd->symbol_names_size = |
480 | convert_to_section_size_type(strtabshdr.get_sh_size()); | |
a2fb1b05 ILT |
481 | } |
482 | ||
730cdc88 | 483 | // Return the section index of symbol SYM. Set *VALUE to its value in |
d491d34e ILT |
484 | // the object file. Set *IS_ORDINARY if this is an ordinary section |
485 | // index. not a special cod between SHN_LORESERVE and SHN_HIRESERVE. | |
486 | // Note that for a symbol which is not defined in this object file, | |
487 | // this will set *VALUE to 0 and return SHN_UNDEF; it will not return | |
488 | // the final value of the symbol in the link. | |
730cdc88 ILT |
489 | |
490 | template<int size, bool big_endian> | |
491 | unsigned int | |
492 | Sized_relobj<size, big_endian>::symbol_section_and_value(unsigned int sym, | |
d491d34e ILT |
493 | Address* value, |
494 | bool* is_ordinary) | |
730cdc88 | 495 | { |
8383303e | 496 | section_size_type symbols_size; |
730cdc88 ILT |
497 | const unsigned char* symbols = this->section_contents(this->symtab_shndx_, |
498 | &symbols_size, | |
499 | false); | |
500 | ||
501 | const size_t count = symbols_size / This::sym_size; | |
502 | gold_assert(sym < count); | |
503 | ||
504 | elfcpp::Sym<size, big_endian> elfsym(symbols + sym * This::sym_size); | |
505 | *value = elfsym.get_st_value(); | |
d491d34e ILT |
506 | |
507 | return this->adjust_sym_shndx(sym, elfsym.get_st_shndx(), is_ordinary); | |
730cdc88 ILT |
508 | } |
509 | ||
a2fb1b05 ILT |
510 | // Return whether to include a section group in the link. LAYOUT is |
511 | // used to keep track of which section groups we have already seen. | |
512 | // INDEX is the index of the section group and SHDR is the section | |
513 | // header. If we do not want to include this group, we set bits in | |
514 | // OMIT for each section which should be discarded. | |
515 | ||
516 | template<int size, bool big_endian> | |
517 | bool | |
f6ce93d6 | 518 | Sized_relobj<size, big_endian>::include_section_group( |
6a74a719 | 519 | Symbol_table* symtab, |
a2fb1b05 ILT |
520 | Layout* layout, |
521 | unsigned int index, | |
6a74a719 | 522 | const char* name, |
e94cf127 CC |
523 | const unsigned char* shdrs, |
524 | const char* section_names, | |
525 | section_size_type section_names_size, | |
a2fb1b05 ILT |
526 | std::vector<bool>* omit) |
527 | { | |
528 | // Read the section contents. | |
e94cf127 | 529 | typename This::Shdr shdr(shdrs + index * This::shdr_size); |
a2fb1b05 | 530 | const unsigned char* pcon = this->get_view(shdr.get_sh_offset(), |
39d0cb0e | 531 | shdr.get_sh_size(), true, false); |
a2fb1b05 ILT |
532 | const elfcpp::Elf_Word* pword = |
533 | reinterpret_cast<const elfcpp::Elf_Word*>(pcon); | |
534 | ||
535 | // The first word contains flags. We only care about COMDAT section | |
536 | // groups. Other section groups are always included in the link | |
537 | // just like ordinary sections. | |
f6ce93d6 | 538 | elfcpp::Elf_Word flags = elfcpp::Swap<32, big_endian>::readval(pword); |
a2fb1b05 ILT |
539 | |
540 | // Look up the group signature, which is the name of a symbol. This | |
541 | // is a lot of effort to go to to read a string. Why didn't they | |
6a74a719 ILT |
542 | // just have the group signature point into the string table, rather |
543 | // than indirect through a symbol? | |
a2fb1b05 ILT |
544 | |
545 | // Get the appropriate symbol table header (this will normally be | |
546 | // the single SHT_SYMTAB section, but in principle it need not be). | |
d491d34e | 547 | const unsigned int link = this->adjust_shndx(shdr.get_sh_link()); |
645f8123 | 548 | typename This::Shdr symshdr(this, this->elf_file_.section_header(link)); |
a2fb1b05 ILT |
549 | |
550 | // Read the symbol table entry. | |
d491d34e ILT |
551 | unsigned int symndx = shdr.get_sh_info(); |
552 | if (symndx >= symshdr.get_sh_size() / This::sym_size) | |
a2fb1b05 | 553 | { |
75f2446e | 554 | this->error(_("section group %u info %u out of range"), |
d491d34e | 555 | index, symndx); |
75f2446e | 556 | return false; |
a2fb1b05 | 557 | } |
d491d34e | 558 | off_t symoff = symshdr.get_sh_offset() + symndx * This::sym_size; |
39d0cb0e ILT |
559 | const unsigned char* psym = this->get_view(symoff, This::sym_size, true, |
560 | false); | |
a2fb1b05 ILT |
561 | elfcpp::Sym<size, big_endian> sym(psym); |
562 | ||
a2fb1b05 | 563 | // Read the symbol table names. |
8383303e | 564 | section_size_type symnamelen; |
645f8123 | 565 | const unsigned char* psymnamesu; |
d491d34e ILT |
566 | psymnamesu = this->section_contents(this->adjust_shndx(symshdr.get_sh_link()), |
567 | &symnamelen, true); | |
a2fb1b05 ILT |
568 | const char* psymnames = reinterpret_cast<const char*>(psymnamesu); |
569 | ||
570 | // Get the section group signature. | |
645f8123 | 571 | if (sym.get_st_name() >= symnamelen) |
a2fb1b05 | 572 | { |
75f2446e | 573 | this->error(_("symbol %u name offset %u out of range"), |
d491d34e | 574 | symndx, sym.get_st_name()); |
75f2446e | 575 | return false; |
a2fb1b05 ILT |
576 | } |
577 | ||
e94cf127 | 578 | std::string signature(psymnames + sym.get_st_name()); |
a2fb1b05 | 579 | |
ead1e424 ILT |
580 | // It seems that some versions of gas will create a section group |
581 | // associated with a section symbol, and then fail to give a name to | |
582 | // the section symbol. In such a case, use the name of the section. | |
645f8123 | 583 | if (signature[0] == '\0' && sym.get_st_type() == elfcpp::STT_SECTION) |
ead1e424 | 584 | { |
d491d34e ILT |
585 | bool is_ordinary; |
586 | unsigned int sym_shndx = this->adjust_sym_shndx(symndx, | |
587 | sym.get_st_shndx(), | |
588 | &is_ordinary); | |
589 | if (!is_ordinary || sym_shndx >= this->shnum()) | |
590 | { | |
591 | this->error(_("symbol %u invalid section index %u"), | |
592 | symndx, sym_shndx); | |
593 | return false; | |
594 | } | |
e94cf127 CC |
595 | typename This::Shdr member_shdr(shdrs + sym_shndx * This::shdr_size); |
596 | if (member_shdr.get_sh_name() < section_names_size) | |
597 | signature = section_names + member_shdr.get_sh_name(); | |
ead1e424 ILT |
598 | } |
599 | ||
e94cf127 CC |
600 | // Record this section group in the layout, and see whether we've already |
601 | // seen one with the same signature. | |
602 | bool include_group = ((flags & elfcpp::GRP_COMDAT) == 0 | |
603 | || layout->add_comdat(this, index, signature, true)); | |
604 | ||
ef9beddf | 605 | Sized_relobj<size, big_endian>* kept_object = NULL; |
e94cf127 | 606 | Comdat_group* kept_group = NULL; |
6a74a719 | 607 | |
e94cf127 | 608 | if (!include_group) |
6a74a719 | 609 | { |
e94cf127 CC |
610 | // This group is being discarded. Find the object and group |
611 | // that was kept in its place. | |
612 | unsigned int kept_group_index = 0; | |
ef9beddf ILT |
613 | Relobj* kept_relobj = layout->find_kept_object(signature, |
614 | &kept_group_index); | |
615 | kept_object = static_cast<Sized_relobj<size, big_endian>*>(kept_relobj); | |
e94cf127 CC |
616 | if (kept_object != NULL) |
617 | kept_group = kept_object->find_comdat_group(kept_group_index); | |
618 | } | |
619 | else if (flags & elfcpp::GRP_COMDAT) | |
620 | { | |
621 | // This group is being kept. Create the table to map section names | |
622 | // to section indexes and add it to the table of groups. | |
623 | kept_group = new Comdat_group(); | |
624 | this->add_comdat_group(index, kept_group); | |
6a74a719 | 625 | } |
a2fb1b05 | 626 | |
a2fb1b05 | 627 | size_t count = shdr.get_sh_size() / sizeof(elfcpp::Elf_Word); |
8825ac63 ILT |
628 | |
629 | std::vector<unsigned int> shndxes; | |
630 | bool relocate_group = include_group && parameters->options().relocatable(); | |
631 | if (relocate_group) | |
632 | shndxes.reserve(count - 1); | |
633 | ||
a2fb1b05 ILT |
634 | for (size_t i = 1; i < count; ++i) |
635 | { | |
f6ce93d6 | 636 | elfcpp::Elf_Word secnum = |
8825ac63 ILT |
637 | this->adjust_shndx(elfcpp::Swap<32, big_endian>::readval(pword + i)); |
638 | ||
639 | if (relocate_group) | |
640 | shndxes.push_back(secnum); | |
641 | ||
a2fb1b05 ILT |
642 | if (secnum >= this->shnum()) |
643 | { | |
75f2446e ILT |
644 | this->error(_("section %u in section group %u out of range"), |
645 | secnum, index); | |
646 | continue; | |
a2fb1b05 | 647 | } |
55438702 ILT |
648 | |
649 | // Check for an earlier section number, since we're going to get | |
650 | // it wrong--we may have already decided to include the section. | |
651 | if (secnum < index) | |
652 | this->error(_("invalid section group %u refers to earlier section %u"), | |
653 | index, secnum); | |
654 | ||
e94cf127 CC |
655 | // Get the name of the member section. |
656 | typename This::Shdr member_shdr(shdrs + secnum * This::shdr_size); | |
657 | if (member_shdr.get_sh_name() >= section_names_size) | |
658 | { | |
659 | // This is an error, but it will be diagnosed eventually | |
660 | // in do_layout, so we don't need to do anything here but | |
661 | // ignore it. | |
662 | continue; | |
663 | } | |
664 | std::string mname(section_names + member_shdr.get_sh_name()); | |
665 | ||
666 | if (!include_group) | |
667 | { | |
668 | (*omit)[secnum] = true; | |
669 | if (kept_group != NULL) | |
670 | { | |
671 | // Find the corresponding kept section, and store that info | |
672 | // in the discarded section table. | |
673 | Comdat_group::const_iterator p = kept_group->find(mname); | |
674 | if (p != kept_group->end()) | |
675 | { | |
676 | Kept_comdat_section* kept = | |
677 | new Kept_comdat_section(kept_object, p->second); | |
678 | this->set_kept_comdat_section(secnum, kept); | |
679 | } | |
680 | } | |
681 | } | |
682 | else if (flags & elfcpp::GRP_COMDAT) | |
683 | { | |
684 | // Add the section to the kept group table. | |
685 | gold_assert(kept_group != NULL); | |
686 | kept_group->insert(std::make_pair(mname, secnum)); | |
687 | } | |
a2fb1b05 ILT |
688 | } |
689 | ||
8825ac63 ILT |
690 | if (relocate_group) |
691 | layout->layout_group(symtab, this, index, name, signature.c_str(), | |
692 | shdr, flags, &shndxes); | |
693 | ||
e94cf127 | 694 | return include_group; |
a2fb1b05 ILT |
695 | } |
696 | ||
697 | // Whether to include a linkonce section in the link. NAME is the | |
698 | // name of the section and SHDR is the section header. | |
699 | ||
700 | // Linkonce sections are a GNU extension implemented in the original | |
701 | // GNU linker before section groups were defined. The semantics are | |
702 | // that we only include one linkonce section with a given name. The | |
703 | // name of a linkonce section is normally .gnu.linkonce.T.SYMNAME, | |
704 | // where T is the type of section and SYMNAME is the name of a symbol. | |
705 | // In an attempt to make linkonce sections interact well with section | |
706 | // groups, we try to identify SYMNAME and use it like a section group | |
707 | // signature. We want to block section groups with that signature, | |
708 | // but not other linkonce sections with that signature. We also use | |
709 | // the full name of the linkonce section as a normal section group | |
710 | // signature. | |
711 | ||
712 | template<int size, bool big_endian> | |
713 | bool | |
f6ce93d6 | 714 | Sized_relobj<size, big_endian>::include_linkonce_section( |
a2fb1b05 | 715 | Layout* layout, |
e94cf127 | 716 | unsigned int index, |
a2fb1b05 ILT |
717 | const char* name, |
718 | const elfcpp::Shdr<size, big_endian>&) | |
719 | { | |
ad435a24 ILT |
720 | // In general the symbol name we want will be the string following |
721 | // the last '.'. However, we have to handle the case of | |
722 | // .gnu.linkonce.t.__i686.get_pc_thunk.bx, which was generated by | |
723 | // some versions of gcc. So we use a heuristic: if the name starts | |
724 | // with ".gnu.linkonce.t.", we use everything after that. Otherwise | |
725 | // we look for the last '.'. We can't always simply skip | |
726 | // ".gnu.linkonce.X", because we have to deal with cases like | |
727 | // ".gnu.linkonce.d.rel.ro.local". | |
728 | const char* const linkonce_t = ".gnu.linkonce.t."; | |
729 | const char* symname; | |
730 | if (strncmp(name, linkonce_t, strlen(linkonce_t)) == 0) | |
731 | symname = name + strlen(linkonce_t); | |
732 | else | |
733 | symname = strrchr(name, '.') + 1; | |
e94cf127 CC |
734 | std::string sig1(symname); |
735 | std::string sig2(name); | |
736 | bool include1 = layout->add_comdat(this, index, sig1, false); | |
737 | bool include2 = layout->add_comdat(this, index, sig2, true); | |
738 | ||
739 | if (!include2) | |
740 | { | |
741 | // The section is being discarded on the basis of its section | |
742 | // name (i.e., the kept section was also a linkonce section). | |
743 | // In this case, the section index stored with the layout object | |
744 | // is the linkonce section that was kept. | |
745 | unsigned int kept_group_index = 0; | |
ef9beddf ILT |
746 | Relobj* kept_relobj = layout->find_kept_object(sig2, &kept_group_index); |
747 | if (kept_relobj != NULL) | |
e94cf127 | 748 | { |
ef9beddf ILT |
749 | Sized_relobj<size, big_endian>* kept_object |
750 | = static_cast<Sized_relobj<size, big_endian>*>(kept_relobj); | |
e94cf127 CC |
751 | Kept_comdat_section* kept = |
752 | new Kept_comdat_section(kept_object, kept_group_index); | |
753 | this->set_kept_comdat_section(index, kept); | |
754 | } | |
755 | } | |
756 | else if (!include1) | |
757 | { | |
758 | // The section is being discarded on the basis of its symbol | |
759 | // name. This means that the corresponding kept section was | |
760 | // part of a comdat group, and it will be difficult to identify | |
761 | // the specific section within that group that corresponds to | |
762 | // this linkonce section. We'll handle the simple case where | |
763 | // the group has only one member section. Otherwise, it's not | |
764 | // worth the effort. | |
765 | unsigned int kept_group_index = 0; | |
ef9beddf ILT |
766 | Relobj* kept_relobj = layout->find_kept_object(sig1, &kept_group_index); |
767 | if (kept_relobj != NULL) | |
e94cf127 | 768 | { |
ef9beddf ILT |
769 | Sized_relobj<size, big_endian>* kept_object = |
770 | static_cast<Sized_relobj<size, big_endian>*>(kept_relobj); | |
e94cf127 CC |
771 | Comdat_group* kept_group = |
772 | kept_object->find_comdat_group(kept_group_index); | |
773 | if (kept_group != NULL && kept_group->size() == 1) | |
774 | { | |
775 | Comdat_group::const_iterator p = kept_group->begin(); | |
776 | gold_assert(p != kept_group->end()); | |
777 | Kept_comdat_section* kept = | |
778 | new Kept_comdat_section(kept_object, p->second); | |
779 | this->set_kept_comdat_section(index, kept); | |
780 | } | |
781 | } | |
782 | } | |
783 | ||
a783673b | 784 | return include1 && include2; |
a2fb1b05 ILT |
785 | } |
786 | ||
787 | // Lay out the input sections. We walk through the sections and check | |
788 | // whether they should be included in the link. If they should, we | |
789 | // pass them to the Layout object, which will return an output section | |
790 | // and an offset. | |
791 | ||
792 | template<int size, bool big_endian> | |
793 | void | |
7e1edb90 | 794 | Sized_relobj<size, big_endian>::do_layout(Symbol_table* symtab, |
f6ce93d6 | 795 | Layout* layout, |
12e14209 | 796 | Read_symbols_data* sd) |
a2fb1b05 | 797 | { |
dbe717ef | 798 | const unsigned int shnum = this->shnum(); |
12e14209 ILT |
799 | if (shnum == 0) |
800 | return; | |
a2fb1b05 ILT |
801 | |
802 | // Get the section headers. | |
e94cf127 CC |
803 | const unsigned char* shdrs = sd->section_headers->data(); |
804 | const unsigned char* pshdrs; | |
a2fb1b05 ILT |
805 | |
806 | // Get the section names. | |
12e14209 | 807 | const unsigned char* pnamesu = sd->section_names->data(); |
a2fb1b05 ILT |
808 | const char* pnames = reinterpret_cast<const char*>(pnamesu); |
809 | ||
730cdc88 ILT |
810 | // For each section, record the index of the reloc section if any. |
811 | // Use 0 to mean that there is no reloc section, -1U to mean that | |
812 | // there is more than one. | |
813 | std::vector<unsigned int> reloc_shndx(shnum, 0); | |
814 | std::vector<unsigned int> reloc_type(shnum, elfcpp::SHT_NULL); | |
815 | // Skip the first, dummy, section. | |
e94cf127 | 816 | pshdrs = shdrs + This::shdr_size; |
730cdc88 ILT |
817 | for (unsigned int i = 1; i < shnum; ++i, pshdrs += This::shdr_size) |
818 | { | |
819 | typename This::Shdr shdr(pshdrs); | |
820 | ||
821 | unsigned int sh_type = shdr.get_sh_type(); | |
822 | if (sh_type == elfcpp::SHT_REL || sh_type == elfcpp::SHT_RELA) | |
823 | { | |
d491d34e | 824 | unsigned int target_shndx = this->adjust_shndx(shdr.get_sh_info()); |
730cdc88 ILT |
825 | if (target_shndx == 0 || target_shndx >= shnum) |
826 | { | |
827 | this->error(_("relocation section %u has bad info %u"), | |
828 | i, target_shndx); | |
829 | continue; | |
830 | } | |
831 | ||
832 | if (reloc_shndx[target_shndx] != 0) | |
833 | reloc_shndx[target_shndx] = -1U; | |
834 | else | |
835 | { | |
836 | reloc_shndx[target_shndx] = i; | |
837 | reloc_type[target_shndx] = sh_type; | |
838 | } | |
839 | } | |
840 | } | |
841 | ||
ef9beddf ILT |
842 | Output_sections& out_sections(this->output_sections()); |
843 | std::vector<Address>& out_section_offsets(this->section_offsets_); | |
844 | ||
845 | out_sections.resize(shnum); | |
846 | out_section_offsets.resize(shnum); | |
a2fb1b05 | 847 | |
88dd47ac ILT |
848 | // If we are only linking for symbols, then there is nothing else to |
849 | // do here. | |
850 | if (this->input_file()->just_symbols()) | |
851 | { | |
852 | delete sd->section_headers; | |
853 | sd->section_headers = NULL; | |
854 | delete sd->section_names; | |
855 | sd->section_names = NULL; | |
856 | return; | |
857 | } | |
858 | ||
35cdfc9a ILT |
859 | // Whether we've seen a .note.GNU-stack section. |
860 | bool seen_gnu_stack = false; | |
861 | // The flags of a .note.GNU-stack section. | |
862 | uint64_t gnu_stack_flags = 0; | |
863 | ||
a2fb1b05 ILT |
864 | // Keep track of which sections to omit. |
865 | std::vector<bool> omit(shnum, false); | |
866 | ||
7019cd25 | 867 | // Keep track of reloc sections when emitting relocations. |
8851ecca ILT |
868 | const bool relocatable = parameters->options().relocatable(); |
869 | const bool emit_relocs = (relocatable | |
870 | || parameters->options().emit_relocs()); | |
6a74a719 ILT |
871 | std::vector<unsigned int> reloc_sections; |
872 | ||
730cdc88 ILT |
873 | // Keep track of .eh_frame sections. |
874 | std::vector<unsigned int> eh_frame_sections; | |
875 | ||
f6ce93d6 | 876 | // Skip the first, dummy, section. |
e94cf127 | 877 | pshdrs = shdrs + This::shdr_size; |
f6ce93d6 | 878 | for (unsigned int i = 1; i < shnum; ++i, pshdrs += This::shdr_size) |
a2fb1b05 | 879 | { |
75f65a3e | 880 | typename This::Shdr shdr(pshdrs); |
a2fb1b05 | 881 | |
12e14209 | 882 | if (shdr.get_sh_name() >= sd->section_names_size) |
a2fb1b05 | 883 | { |
75f2446e ILT |
884 | this->error(_("bad section name offset for section %u: %lu"), |
885 | i, static_cast<unsigned long>(shdr.get_sh_name())); | |
886 | return; | |
a2fb1b05 ILT |
887 | } |
888 | ||
889 | const char* name = pnames + shdr.get_sh_name(); | |
890 | ||
dbe717ef | 891 | if (this->handle_gnu_warning_section(name, i, symtab)) |
f6ce93d6 | 892 | { |
8851ecca | 893 | if (!relocatable) |
f6ce93d6 ILT |
894 | omit[i] = true; |
895 | } | |
896 | ||
35cdfc9a ILT |
897 | // The .note.GNU-stack section is special. It gives the |
898 | // protection flags that this object file requires for the stack | |
899 | // in memory. | |
900 | if (strcmp(name, ".note.GNU-stack") == 0) | |
901 | { | |
902 | seen_gnu_stack = true; | |
903 | gnu_stack_flags |= shdr.get_sh_flags(); | |
904 | omit[i] = true; | |
905 | } | |
906 | ||
a2fb1b05 ILT |
907 | bool discard = omit[i]; |
908 | if (!discard) | |
909 | { | |
910 | if (shdr.get_sh_type() == elfcpp::SHT_GROUP) | |
911 | { | |
e94cf127 CC |
912 | if (!this->include_section_group(symtab, layout, i, name, shdrs, |
913 | pnames, sd->section_names_size, | |
6a74a719 | 914 | &omit)) |
a2fb1b05 ILT |
915 | discard = true; |
916 | } | |
cba134d6 ILT |
917 | else if ((shdr.get_sh_flags() & elfcpp::SHF_GROUP) == 0 |
918 | && Layout::is_linkonce(name)) | |
a2fb1b05 | 919 | { |
e94cf127 | 920 | if (!this->include_linkonce_section(layout, i, name, shdr)) |
a2fb1b05 ILT |
921 | discard = true; |
922 | } | |
923 | } | |
924 | ||
925 | if (discard) | |
926 | { | |
927 | // Do not include this section in the link. | |
ef9beddf | 928 | out_sections[i] = NULL; |
eff45813 | 929 | out_section_offsets[i] = invalid_address; |
a2fb1b05 ILT |
930 | continue; |
931 | } | |
932 | ||
6a74a719 ILT |
933 | // When doing a relocatable link we are going to copy input |
934 | // reloc sections into the output. We only want to copy the | |
935 | // ones associated with sections which are not being discarded. | |
936 | // However, we don't know that yet for all sections. So save | |
937 | // reloc sections and process them later. | |
7019cd25 | 938 | if (emit_relocs |
6a74a719 ILT |
939 | && (shdr.get_sh_type() == elfcpp::SHT_REL |
940 | || shdr.get_sh_type() == elfcpp::SHT_RELA)) | |
941 | { | |
942 | reloc_sections.push_back(i); | |
943 | continue; | |
944 | } | |
945 | ||
8851ecca | 946 | if (relocatable && shdr.get_sh_type() == elfcpp::SHT_GROUP) |
6a74a719 ILT |
947 | continue; |
948 | ||
730cdc88 ILT |
949 | // The .eh_frame section is special. It holds exception frame |
950 | // information that we need to read in order to generate the | |
951 | // exception frame header. We process these after all the other | |
952 | // sections so that the exception frame reader can reliably | |
953 | // determine which sections are being discarded, and discard the | |
954 | // corresponding information. | |
8851ecca | 955 | if (!relocatable |
730cdc88 ILT |
956 | && strcmp(name, ".eh_frame") == 0 |
957 | && this->check_eh_frame_flags(&shdr)) | |
958 | { | |
959 | eh_frame_sections.push_back(i); | |
960 | continue; | |
961 | } | |
962 | ||
a2fb1b05 | 963 | off_t offset; |
730cdc88 ILT |
964 | Output_section* os = layout->layout(this, i, name, shdr, |
965 | reloc_shndx[i], reloc_type[i], | |
966 | &offset); | |
a2fb1b05 | 967 | |
ef9beddf ILT |
968 | out_sections[i] = os; |
969 | if (offset == -1) | |
eff45813 | 970 | out_section_offsets[i] = invalid_address; |
ef9beddf ILT |
971 | else |
972 | out_section_offsets[i] = convert_types<Address, off_t>(offset); | |
730cdc88 ILT |
973 | |
974 | // If this section requires special handling, and if there are | |
975 | // relocs that apply to it, then we must do the special handling | |
976 | // before we apply the relocs. | |
977 | if (offset == -1 && reloc_shndx[i] != 0) | |
978 | this->set_relocs_must_follow_section_writes(); | |
12e14209 ILT |
979 | } |
980 | ||
35cdfc9a ILT |
981 | layout->layout_gnu_stack(seen_gnu_stack, gnu_stack_flags); |
982 | ||
6a74a719 ILT |
983 | // When doing a relocatable link handle the reloc sections at the |
984 | // end. | |
7019cd25 | 985 | if (emit_relocs) |
6a74a719 ILT |
986 | this->size_relocatable_relocs(); |
987 | for (std::vector<unsigned int>::const_iterator p = reloc_sections.begin(); | |
988 | p != reloc_sections.end(); | |
989 | ++p) | |
990 | { | |
991 | unsigned int i = *p; | |
992 | const unsigned char* pshdr; | |
993 | pshdr = sd->section_headers->data() + i * This::shdr_size; | |
994 | typename This::Shdr shdr(pshdr); | |
995 | ||
d491d34e | 996 | unsigned int data_shndx = this->adjust_shndx(shdr.get_sh_info()); |
6a74a719 ILT |
997 | if (data_shndx >= shnum) |
998 | { | |
999 | // We already warned about this above. | |
1000 | continue; | |
1001 | } | |
1002 | ||
ef9beddf | 1003 | Output_section* data_section = out_sections[data_shndx]; |
6a74a719 ILT |
1004 | if (data_section == NULL) |
1005 | { | |
ef9beddf | 1006 | out_sections[i] = NULL; |
eff45813 | 1007 | out_section_offsets[i] = invalid_address; |
6a74a719 ILT |
1008 | continue; |
1009 | } | |
1010 | ||
1011 | Relocatable_relocs* rr = new Relocatable_relocs(); | |
1012 | this->set_relocatable_relocs(i, rr); | |
1013 | ||
1014 | Output_section* os = layout->layout_reloc(this, i, shdr, data_section, | |
1015 | rr); | |
ef9beddf | 1016 | out_sections[i] = os; |
eff45813 | 1017 | out_section_offsets[i] = invalid_address; |
6a74a719 ILT |
1018 | } |
1019 | ||
730cdc88 ILT |
1020 | // Handle the .eh_frame sections at the end. |
1021 | for (std::vector<unsigned int>::const_iterator p = eh_frame_sections.begin(); | |
1022 | p != eh_frame_sections.end(); | |
1023 | ++p) | |
1024 | { | |
1025 | gold_assert(this->has_eh_frame_); | |
1026 | gold_assert(sd->external_symbols_offset != 0); | |
1027 | ||
1028 | unsigned int i = *p; | |
1029 | const unsigned char *pshdr; | |
1030 | pshdr = sd->section_headers->data() + i * This::shdr_size; | |
1031 | typename This::Shdr shdr(pshdr); | |
1032 | ||
1033 | off_t offset; | |
1034 | Output_section* os = layout->layout_eh_frame(this, | |
1035 | sd->symbols->data(), | |
1036 | sd->symbols_size, | |
1037 | sd->symbol_names->data(), | |
1038 | sd->symbol_names_size, | |
1039 | i, shdr, | |
1040 | reloc_shndx[i], | |
1041 | reloc_type[i], | |
1042 | &offset); | |
ef9beddf ILT |
1043 | out_sections[i] = os; |
1044 | if (offset == -1) | |
eff45813 | 1045 | out_section_offsets[i] = invalid_address; |
ef9beddf ILT |
1046 | else |
1047 | out_section_offsets[i] = convert_types<Address, off_t>(offset); | |
730cdc88 ILT |
1048 | |
1049 | // If this section requires special handling, and if there are | |
1050 | // relocs that apply to it, then we must do the special handling | |
1051 | // before we apply the relocs. | |
1052 | if (offset == -1 && reloc_shndx[i] != 0) | |
1053 | this->set_relocs_must_follow_section_writes(); | |
1054 | } | |
1055 | ||
12e14209 ILT |
1056 | delete sd->section_headers; |
1057 | sd->section_headers = NULL; | |
1058 | delete sd->section_names; | |
1059 | sd->section_names = NULL; | |
1060 | } | |
1061 | ||
1062 | // Add the symbols to the symbol table. | |
1063 | ||
1064 | template<int size, bool big_endian> | |
1065 | void | |
f6ce93d6 | 1066 | Sized_relobj<size, big_endian>::do_add_symbols(Symbol_table* symtab, |
12e14209 ILT |
1067 | Read_symbols_data* sd) |
1068 | { | |
1069 | if (sd->symbols == NULL) | |
1070 | { | |
a3ad94ed | 1071 | gold_assert(sd->symbol_names == NULL); |
12e14209 ILT |
1072 | return; |
1073 | } | |
a2fb1b05 | 1074 | |
12e14209 | 1075 | const int sym_size = This::sym_size; |
730cdc88 ILT |
1076 | size_t symcount = ((sd->symbols_size - sd->external_symbols_offset) |
1077 | / sym_size); | |
8383303e | 1078 | if (symcount * sym_size != sd->symbols_size - sd->external_symbols_offset) |
12e14209 | 1079 | { |
75f2446e ILT |
1080 | this->error(_("size of symbols is not multiple of symbol size")); |
1081 | return; | |
a2fb1b05 | 1082 | } |
12e14209 | 1083 | |
730cdc88 | 1084 | this->symbols_.resize(symcount); |
12e14209 | 1085 | |
12e14209 ILT |
1086 | const char* sym_names = |
1087 | reinterpret_cast<const char*>(sd->symbol_names->data()); | |
730cdc88 ILT |
1088 | symtab->add_from_relobj(this, |
1089 | sd->symbols->data() + sd->external_symbols_offset, | |
7fcd3aa9 | 1090 | symcount, this->local_symbol_count_, |
d491d34e | 1091 | sym_names, sd->symbol_names_size, |
92de84a6 ILT |
1092 | &this->symbols_, |
1093 | &this->defined_count_); | |
12e14209 ILT |
1094 | |
1095 | delete sd->symbols; | |
1096 | sd->symbols = NULL; | |
1097 | delete sd->symbol_names; | |
1098 | sd->symbol_names = NULL; | |
bae7f79e ILT |
1099 | } |
1100 | ||
cb295612 ILT |
1101 | // First pass over the local symbols. Here we add their names to |
1102 | // *POOL and *DYNPOOL, and we store the symbol value in | |
1103 | // THIS->LOCAL_VALUES_. This function is always called from a | |
1104 | // singleton thread. This is followed by a call to | |
1105 | // finalize_local_symbols. | |
75f65a3e ILT |
1106 | |
1107 | template<int size, bool big_endian> | |
7bf1f802 ILT |
1108 | void |
1109 | Sized_relobj<size, big_endian>::do_count_local_symbols(Stringpool* pool, | |
1110 | Stringpool* dynpool) | |
75f65a3e | 1111 | { |
a3ad94ed | 1112 | gold_assert(this->symtab_shndx_ != -1U); |
645f8123 | 1113 | if (this->symtab_shndx_ == 0) |
61ba1cf9 ILT |
1114 | { |
1115 | // This object has no symbols. Weird but legal. | |
7bf1f802 | 1116 | return; |
61ba1cf9 ILT |
1117 | } |
1118 | ||
75f65a3e | 1119 | // Read the symbol table section header. |
645f8123 ILT |
1120 | const unsigned int symtab_shndx = this->symtab_shndx_; |
1121 | typename This::Shdr symtabshdr(this, | |
1122 | this->elf_file_.section_header(symtab_shndx)); | |
a3ad94ed | 1123 | gold_assert(symtabshdr.get_sh_type() == elfcpp::SHT_SYMTAB); |
75f65a3e ILT |
1124 | |
1125 | // Read the local symbols. | |
75f65a3e | 1126 | const int sym_size = This::sym_size; |
92e059d8 | 1127 | const unsigned int loccount = this->local_symbol_count_; |
a3ad94ed | 1128 | gold_assert(loccount == symtabshdr.get_sh_info()); |
75f65a3e ILT |
1129 | off_t locsize = loccount * sym_size; |
1130 | const unsigned char* psyms = this->get_view(symtabshdr.get_sh_offset(), | |
39d0cb0e | 1131 | locsize, true, true); |
75f65a3e | 1132 | |
75f65a3e | 1133 | // Read the symbol names. |
d491d34e ILT |
1134 | const unsigned int strtab_shndx = |
1135 | this->adjust_shndx(symtabshdr.get_sh_link()); | |
8383303e | 1136 | section_size_type strtab_size; |
645f8123 | 1137 | const unsigned char* pnamesu = this->section_contents(strtab_shndx, |
9eb9fa57 ILT |
1138 | &strtab_size, |
1139 | true); | |
75f65a3e ILT |
1140 | const char* pnames = reinterpret_cast<const char*>(pnamesu); |
1141 | ||
1142 | // Loop over the local symbols. | |
1143 | ||
ef9beddf | 1144 | const Output_sections& out_sections(this->output_sections()); |
75f65a3e | 1145 | unsigned int shnum = this->shnum(); |
61ba1cf9 | 1146 | unsigned int count = 0; |
7bf1f802 | 1147 | unsigned int dyncount = 0; |
75f65a3e ILT |
1148 | // Skip the first, dummy, symbol. |
1149 | psyms += sym_size; | |
61ba1cf9 | 1150 | for (unsigned int i = 1; i < loccount; ++i, psyms += sym_size) |
75f65a3e ILT |
1151 | { |
1152 | elfcpp::Sym<size, big_endian> sym(psyms); | |
1153 | ||
b8e6aad9 ILT |
1154 | Symbol_value<size>& lv(this->local_values_[i]); |
1155 | ||
d491d34e ILT |
1156 | bool is_ordinary; |
1157 | unsigned int shndx = this->adjust_sym_shndx(i, sym.get_st_shndx(), | |
1158 | &is_ordinary); | |
1159 | lv.set_input_shndx(shndx, is_ordinary); | |
75f65a3e | 1160 | |
063f12a8 ILT |
1161 | if (sym.get_st_type() == elfcpp::STT_SECTION) |
1162 | lv.set_is_section_symbol(); | |
7bf1f802 ILT |
1163 | else if (sym.get_st_type() == elfcpp::STT_TLS) |
1164 | lv.set_is_tls_symbol(); | |
1165 | ||
1166 | // Save the input symbol value for use in do_finalize_local_symbols(). | |
1167 | lv.set_input_value(sym.get_st_value()); | |
1168 | ||
1169 | // Decide whether this symbol should go into the output file. | |
063f12a8 | 1170 | |
ef9beddf | 1171 | if (shndx < shnum && out_sections[shndx] == NULL) |
7bf1f802 ILT |
1172 | { |
1173 | lv.set_no_output_symtab_entry(); | |
dceae3c1 | 1174 | gold_assert(!lv.needs_output_dynsym_entry()); |
7bf1f802 ILT |
1175 | continue; |
1176 | } | |
1177 | ||
1178 | if (sym.get_st_type() == elfcpp::STT_SECTION) | |
1179 | { | |
1180 | lv.set_no_output_symtab_entry(); | |
dceae3c1 | 1181 | gold_assert(!lv.needs_output_dynsym_entry()); |
7bf1f802 ILT |
1182 | continue; |
1183 | } | |
1184 | ||
1185 | if (sym.get_st_name() >= strtab_size) | |
1186 | { | |
1187 | this->error(_("local symbol %u section name out of range: %u >= %u"), | |
1188 | i, sym.get_st_name(), | |
1189 | static_cast<unsigned int>(strtab_size)); | |
1190 | lv.set_no_output_symtab_entry(); | |
1191 | continue; | |
1192 | } | |
1193 | ||
1194 | // Add the symbol to the symbol table string pool. | |
1195 | const char* name = pnames + sym.get_st_name(); | |
1196 | pool->add(name, true, NULL); | |
1197 | ++count; | |
1198 | ||
1199 | // If needed, add the symbol to the dynamic symbol table string pool. | |
1200 | if (lv.needs_output_dynsym_entry()) | |
1201 | { | |
1202 | dynpool->add(name, true, NULL); | |
1203 | ++dyncount; | |
1204 | } | |
1205 | } | |
1206 | ||
1207 | this->output_local_symbol_count_ = count; | |
1208 | this->output_local_dynsym_count_ = dyncount; | |
1209 | } | |
1210 | ||
cb295612 | 1211 | // Finalize the local symbols. Here we set the final value in |
7bf1f802 | 1212 | // THIS->LOCAL_VALUES_ and set their output symbol table indexes. |
17a1d0a9 | 1213 | // This function is always called from a singleton thread. The actual |
7bf1f802 ILT |
1214 | // output of the local symbols will occur in a separate task. |
1215 | ||
1216 | template<int size, bool big_endian> | |
1217 | unsigned int | |
1218 | Sized_relobj<size, big_endian>::do_finalize_local_symbols(unsigned int index, | |
d491d34e | 1219 | off_t off) |
7bf1f802 ILT |
1220 | { |
1221 | gold_assert(off == static_cast<off_t>(align_address(off, size >> 3))); | |
1222 | ||
1223 | const unsigned int loccount = this->local_symbol_count_; | |
1224 | this->local_symbol_offset_ = off; | |
1225 | ||
ef9beddf ILT |
1226 | const Output_sections& out_sections(this->output_sections()); |
1227 | const std::vector<Address>& out_offsets(this->section_offsets_); | |
7bf1f802 ILT |
1228 | unsigned int shnum = this->shnum(); |
1229 | ||
1230 | for (unsigned int i = 1; i < loccount; ++i) | |
1231 | { | |
1232 | Symbol_value<size>& lv(this->local_values_[i]); | |
1233 | ||
d491d34e ILT |
1234 | bool is_ordinary; |
1235 | unsigned int shndx = lv.input_shndx(&is_ordinary); | |
7bf1f802 ILT |
1236 | |
1237 | // Set the output symbol value. | |
ef9beddf | 1238 | |
d491d34e | 1239 | if (!is_ordinary) |
75f65a3e | 1240 | { |
0dfbdef4 | 1241 | if (shndx == elfcpp::SHN_ABS || shndx == elfcpp::SHN_COMMON) |
7bf1f802 | 1242 | lv.set_output_value(lv.input_value()); |
61ba1cf9 | 1243 | else |
75f65a3e | 1244 | { |
75f2446e ILT |
1245 | this->error(_("unknown section index %u for local symbol %u"), |
1246 | shndx, i); | |
1247 | lv.set_output_value(0); | |
75f65a3e | 1248 | } |
75f65a3e ILT |
1249 | } |
1250 | else | |
1251 | { | |
1252 | if (shndx >= shnum) | |
1253 | { | |
75f2446e ILT |
1254 | this->error(_("local symbol %u section index %u out of range"), |
1255 | i, shndx); | |
1256 | shndx = 0; | |
75f65a3e ILT |
1257 | } |
1258 | ||
ef9beddf | 1259 | Output_section* os = out_sections[shndx]; |
b8e6aad9 ILT |
1260 | |
1261 | if (os == NULL) | |
61ba1cf9 | 1262 | { |
e94cf127 CC |
1263 | // This local symbol belongs to a section we are discarding. |
1264 | // In some cases when applying relocations later, we will | |
1265 | // attempt to match it to the corresponding kept section, | |
1266 | // so we leave the input value unchanged here. | |
61ba1cf9 ILT |
1267 | continue; |
1268 | } | |
eff45813 | 1269 | else if (out_offsets[shndx] == invalid_address) |
7bf1f802 | 1270 | { |
a9a60db6 ILT |
1271 | // This is a SHF_MERGE section or one which otherwise |
1272 | // requires special handling. We get the output address | |
1273 | // of the start of the merged section. If this is not a | |
1274 | // section symbol, we can then determine the final | |
1275 | // value. If it is a section symbol, we can not, as in | |
1276 | // that case we have to consider the addend to determine | |
1277 | // the value to use in a relocation. | |
a9a60db6 | 1278 | if (!lv.is_section_symbol()) |
8d32f935 ILT |
1279 | lv.set_output_value(os->output_address(this, shndx, |
1280 | lv.input_value())); | |
a9a60db6 ILT |
1281 | else |
1282 | { | |
8d32f935 ILT |
1283 | section_offset_type start = |
1284 | os->starting_output_address(this, shndx); | |
a9a60db6 ILT |
1285 | Merged_symbol_value<size>* msv = |
1286 | new Merged_symbol_value<size>(lv.input_value(), start); | |
1287 | lv.set_merged_symbol_value(msv); | |
1288 | } | |
7bf1f802 ILT |
1289 | } |
1290 | else if (lv.is_tls_symbol()) | |
a9a60db6 | 1291 | lv.set_output_value(os->tls_offset() |
ef9beddf | 1292 | + out_offsets[shndx] |
7bf1f802 | 1293 | + lv.input_value()); |
b8e6aad9 | 1294 | else |
a9a60db6 | 1295 | lv.set_output_value(os->address() |
ef9beddf | 1296 | + out_offsets[shndx] |
7bf1f802 | 1297 | + lv.input_value()); |
75f65a3e ILT |
1298 | } |
1299 | ||
7bf1f802 ILT |
1300 | if (lv.needs_output_symtab_entry()) |
1301 | { | |
1302 | lv.set_output_symtab_index(index); | |
1303 | ++index; | |
1304 | } | |
1305 | } | |
1306 | return index; | |
1307 | } | |
645f8123 | 1308 | |
7bf1f802 | 1309 | // Set the output dynamic symbol table indexes for the local variables. |
c06b7b0b | 1310 | |
7bf1f802 ILT |
1311 | template<int size, bool big_endian> |
1312 | unsigned int | |
1313 | Sized_relobj<size, big_endian>::do_set_local_dynsym_indexes(unsigned int index) | |
1314 | { | |
1315 | const unsigned int loccount = this->local_symbol_count_; | |
1316 | for (unsigned int i = 1; i < loccount; ++i) | |
1317 | { | |
1318 | Symbol_value<size>& lv(this->local_values_[i]); | |
1319 | if (lv.needs_output_dynsym_entry()) | |
1320 | { | |
1321 | lv.set_output_dynsym_index(index); | |
1322 | ++index; | |
1323 | } | |
75f65a3e | 1324 | } |
7bf1f802 ILT |
1325 | return index; |
1326 | } | |
75f65a3e | 1327 | |
7bf1f802 ILT |
1328 | // Set the offset where local dynamic symbol information will be stored. |
1329 | // Returns the count of local symbols contributed to the symbol table by | |
1330 | // this object. | |
61ba1cf9 | 1331 | |
7bf1f802 ILT |
1332 | template<int size, bool big_endian> |
1333 | unsigned int | |
1334 | Sized_relobj<size, big_endian>::do_set_local_dynsym_offset(off_t off) | |
1335 | { | |
1336 | gold_assert(off == static_cast<off_t>(align_address(off, size >> 3))); | |
1337 | this->local_dynsym_offset_ = off; | |
1338 | return this->output_local_dynsym_count_; | |
75f65a3e ILT |
1339 | } |
1340 | ||
61ba1cf9 ILT |
1341 | // Write out the local symbols. |
1342 | ||
1343 | template<int size, bool big_endian> | |
1344 | void | |
17a1d0a9 ILT |
1345 | Sized_relobj<size, big_endian>::write_local_symbols( |
1346 | Output_file* of, | |
1347 | const Stringpool* sympool, | |
d491d34e ILT |
1348 | const Stringpool* dynpool, |
1349 | Output_symtab_xindex* symtab_xindex, | |
1350 | Output_symtab_xindex* dynsym_xindex) | |
61ba1cf9 | 1351 | { |
8851ecca ILT |
1352 | if (parameters->options().strip_all() |
1353 | && this->output_local_dynsym_count_ == 0) | |
9e2dcb77 ILT |
1354 | return; |
1355 | ||
a3ad94ed | 1356 | gold_assert(this->symtab_shndx_ != -1U); |
645f8123 | 1357 | if (this->symtab_shndx_ == 0) |
61ba1cf9 ILT |
1358 | { |
1359 | // This object has no symbols. Weird but legal. | |
1360 | return; | |
1361 | } | |
1362 | ||
1363 | // Read the symbol table section header. | |
645f8123 ILT |
1364 | const unsigned int symtab_shndx = this->symtab_shndx_; |
1365 | typename This::Shdr symtabshdr(this, | |
1366 | this->elf_file_.section_header(symtab_shndx)); | |
a3ad94ed | 1367 | gold_assert(symtabshdr.get_sh_type() == elfcpp::SHT_SYMTAB); |
92e059d8 | 1368 | const unsigned int loccount = this->local_symbol_count_; |
a3ad94ed | 1369 | gold_assert(loccount == symtabshdr.get_sh_info()); |
61ba1cf9 ILT |
1370 | |
1371 | // Read the local symbols. | |
1372 | const int sym_size = This::sym_size; | |
92e059d8 | 1373 | off_t locsize = loccount * sym_size; |
61ba1cf9 | 1374 | const unsigned char* psyms = this->get_view(symtabshdr.get_sh_offset(), |
39d0cb0e | 1375 | locsize, true, false); |
61ba1cf9 | 1376 | |
61ba1cf9 | 1377 | // Read the symbol names. |
d491d34e ILT |
1378 | const unsigned int strtab_shndx = |
1379 | this->adjust_shndx(symtabshdr.get_sh_link()); | |
8383303e | 1380 | section_size_type strtab_size; |
645f8123 | 1381 | const unsigned char* pnamesu = this->section_contents(strtab_shndx, |
9eb9fa57 | 1382 | &strtab_size, |
cb295612 | 1383 | false); |
61ba1cf9 ILT |
1384 | const char* pnames = reinterpret_cast<const char*>(pnamesu); |
1385 | ||
7bf1f802 ILT |
1386 | // Get views into the output file for the portions of the symbol table |
1387 | // and the dynamic symbol table that we will be writing. | |
61ba1cf9 | 1388 | off_t output_size = this->output_local_symbol_count_ * sym_size; |
f2619d6c | 1389 | unsigned char* oview = NULL; |
7bf1f802 ILT |
1390 | if (output_size > 0) |
1391 | oview = of->get_output_view(this->local_symbol_offset_, output_size); | |
1392 | ||
1393 | off_t dyn_output_size = this->output_local_dynsym_count_ * sym_size; | |
1394 | unsigned char* dyn_oview = NULL; | |
1395 | if (dyn_output_size > 0) | |
1396 | dyn_oview = of->get_output_view(this->local_dynsym_offset_, | |
1397 | dyn_output_size); | |
61ba1cf9 | 1398 | |
ef9beddf | 1399 | const Output_sections out_sections(this->output_sections()); |
c06b7b0b | 1400 | |
a3ad94ed | 1401 | gold_assert(this->local_values_.size() == loccount); |
61ba1cf9 | 1402 | |
61ba1cf9 | 1403 | unsigned char* ov = oview; |
7bf1f802 | 1404 | unsigned char* dyn_ov = dyn_oview; |
c06b7b0b | 1405 | psyms += sym_size; |
92e059d8 | 1406 | for (unsigned int i = 1; i < loccount; ++i, psyms += sym_size) |
61ba1cf9 ILT |
1407 | { |
1408 | elfcpp::Sym<size, big_endian> isym(psyms); | |
f6ce93d6 | 1409 | |
d491d34e ILT |
1410 | Symbol_value<size>& lv(this->local_values_[i]); |
1411 | ||
1412 | bool is_ordinary; | |
1413 | unsigned int st_shndx = this->adjust_sym_shndx(i, isym.get_st_shndx(), | |
1414 | &is_ordinary); | |
1415 | if (is_ordinary) | |
61ba1cf9 | 1416 | { |
ef9beddf ILT |
1417 | gold_assert(st_shndx < out_sections.size()); |
1418 | if (out_sections[st_shndx] == NULL) | |
61ba1cf9 | 1419 | continue; |
ef9beddf | 1420 | st_shndx = out_sections[st_shndx]->out_shndx(); |
d491d34e ILT |
1421 | if (st_shndx >= elfcpp::SHN_LORESERVE) |
1422 | { | |
1423 | if (lv.needs_output_symtab_entry()) | |
1424 | symtab_xindex->add(lv.output_symtab_index(), st_shndx); | |
1425 | if (lv.needs_output_dynsym_entry()) | |
1426 | dynsym_xindex->add(lv.output_dynsym_index(), st_shndx); | |
1427 | st_shndx = elfcpp::SHN_XINDEX; | |
1428 | } | |
61ba1cf9 ILT |
1429 | } |
1430 | ||
7bf1f802 | 1431 | // Write the symbol to the output symbol table. |
8851ecca | 1432 | if (!parameters->options().strip_all() |
d491d34e | 1433 | && lv.needs_output_symtab_entry()) |
7bf1f802 ILT |
1434 | { |
1435 | elfcpp::Sym_write<size, big_endian> osym(ov); | |
1436 | ||
1437 | gold_assert(isym.get_st_name() < strtab_size); | |
1438 | const char* name = pnames + isym.get_st_name(); | |
1439 | osym.put_st_name(sympool->get_offset(name)); | |
1440 | osym.put_st_value(this->local_values_[i].value(this, 0)); | |
1441 | osym.put_st_size(isym.get_st_size()); | |
1442 | osym.put_st_info(isym.get_st_info()); | |
1443 | osym.put_st_other(isym.get_st_other()); | |
1444 | osym.put_st_shndx(st_shndx); | |
1445 | ||
1446 | ov += sym_size; | |
1447 | } | |
1448 | ||
1449 | // Write the symbol to the output dynamic symbol table. | |
d491d34e | 1450 | if (lv.needs_output_dynsym_entry()) |
7bf1f802 ILT |
1451 | { |
1452 | gold_assert(dyn_ov < dyn_oview + dyn_output_size); | |
1453 | elfcpp::Sym_write<size, big_endian> osym(dyn_ov); | |
1454 | ||
1455 | gold_assert(isym.get_st_name() < strtab_size); | |
1456 | const char* name = pnames + isym.get_st_name(); | |
1457 | osym.put_st_name(dynpool->get_offset(name)); | |
1458 | osym.put_st_value(this->local_values_[i].value(this, 0)); | |
1459 | osym.put_st_size(isym.get_st_size()); | |
1460 | osym.put_st_info(isym.get_st_info()); | |
1461 | osym.put_st_other(isym.get_st_other()); | |
1462 | osym.put_st_shndx(st_shndx); | |
1463 | ||
1464 | dyn_ov += sym_size; | |
1465 | } | |
1466 | } | |
f6ce93d6 | 1467 | |
61ba1cf9 | 1468 | |
7bf1f802 ILT |
1469 | if (output_size > 0) |
1470 | { | |
1471 | gold_assert(ov - oview == output_size); | |
1472 | of->write_output_view(this->local_symbol_offset_, output_size, oview); | |
61ba1cf9 ILT |
1473 | } |
1474 | ||
7bf1f802 ILT |
1475 | if (dyn_output_size > 0) |
1476 | { | |
1477 | gold_assert(dyn_ov - dyn_oview == dyn_output_size); | |
1478 | of->write_output_view(this->local_dynsym_offset_, dyn_output_size, | |
1479 | dyn_oview); | |
1480 | } | |
61ba1cf9 ILT |
1481 | } |
1482 | ||
f7e2ee48 ILT |
1483 | // Set *INFO to symbolic information about the offset OFFSET in the |
1484 | // section SHNDX. Return true if we found something, false if we | |
1485 | // found nothing. | |
1486 | ||
1487 | template<int size, bool big_endian> | |
1488 | bool | |
1489 | Sized_relobj<size, big_endian>::get_symbol_location_info( | |
1490 | unsigned int shndx, | |
1491 | off_t offset, | |
1492 | Symbol_location_info* info) | |
1493 | { | |
1494 | if (this->symtab_shndx_ == 0) | |
1495 | return false; | |
1496 | ||
8383303e | 1497 | section_size_type symbols_size; |
f7e2ee48 ILT |
1498 | const unsigned char* symbols = this->section_contents(this->symtab_shndx_, |
1499 | &symbols_size, | |
1500 | false); | |
1501 | ||
d491d34e ILT |
1502 | unsigned int symbol_names_shndx = |
1503 | this->adjust_shndx(this->section_link(this->symtab_shndx_)); | |
8383303e | 1504 | section_size_type names_size; |
f7e2ee48 ILT |
1505 | const unsigned char* symbol_names_u = |
1506 | this->section_contents(symbol_names_shndx, &names_size, false); | |
1507 | const char* symbol_names = reinterpret_cast<const char*>(symbol_names_u); | |
1508 | ||
1509 | const int sym_size = This::sym_size; | |
1510 | const size_t count = symbols_size / sym_size; | |
1511 | ||
1512 | const unsigned char* p = symbols; | |
1513 | for (size_t i = 0; i < count; ++i, p += sym_size) | |
1514 | { | |
1515 | elfcpp::Sym<size, big_endian> sym(p); | |
1516 | ||
1517 | if (sym.get_st_type() == elfcpp::STT_FILE) | |
1518 | { | |
1519 | if (sym.get_st_name() >= names_size) | |
1520 | info->source_file = "(invalid)"; | |
1521 | else | |
1522 | info->source_file = symbol_names + sym.get_st_name(); | |
d491d34e | 1523 | continue; |
f7e2ee48 | 1524 | } |
d491d34e ILT |
1525 | |
1526 | bool is_ordinary; | |
1527 | unsigned int st_shndx = this->adjust_sym_shndx(i, sym.get_st_shndx(), | |
1528 | &is_ordinary); | |
1529 | if (is_ordinary | |
1530 | && st_shndx == shndx | |
1531 | && static_cast<off_t>(sym.get_st_value()) <= offset | |
1532 | && (static_cast<off_t>(sym.get_st_value() + sym.get_st_size()) | |
1533 | > offset)) | |
f7e2ee48 ILT |
1534 | { |
1535 | if (sym.get_st_name() > names_size) | |
1536 | info->enclosing_symbol_name = "(invalid)"; | |
1537 | else | |
a2b1aa12 ILT |
1538 | { |
1539 | info->enclosing_symbol_name = symbol_names + sym.get_st_name(); | |
086a1841 | 1540 | if (parameters->options().do_demangle()) |
a2b1aa12 ILT |
1541 | { |
1542 | char* demangled_name = cplus_demangle( | |
1543 | info->enclosing_symbol_name.c_str(), | |
1544 | DMGL_ANSI | DMGL_PARAMS); | |
1545 | if (demangled_name != NULL) | |
1546 | { | |
1547 | info->enclosing_symbol_name.assign(demangled_name); | |
1548 | free(demangled_name); | |
1549 | } | |
1550 | } | |
1551 | } | |
f7e2ee48 ILT |
1552 | return true; |
1553 | } | |
1554 | } | |
1555 | ||
1556 | return false; | |
1557 | } | |
1558 | ||
e94cf127 CC |
1559 | // Look for a kept section corresponding to the given discarded section, |
1560 | // and return its output address. This is used only for relocations in | |
1561 | // debugging sections. If we can't find the kept section, return 0. | |
1562 | ||
1563 | template<int size, bool big_endian> | |
1564 | typename Sized_relobj<size, big_endian>::Address | |
1565 | Sized_relobj<size, big_endian>::map_to_kept_section( | |
1566 | unsigned int shndx, | |
1567 | bool* found) const | |
1568 | { | |
1569 | Kept_comdat_section *kept = this->get_kept_comdat_section(shndx); | |
1570 | if (kept != NULL) | |
1571 | { | |
1572 | gold_assert(kept->object_ != NULL); | |
1573 | *found = true; | |
ef9beddf ILT |
1574 | Output_section* os = kept->object_->output_section(kept->shndx_); |
1575 | Address offset = kept->object_->get_output_section_offset(kept->shndx_); | |
eff45813 | 1576 | gold_assert(os != NULL && offset != invalid_address); |
ef9beddf | 1577 | return os->address() + offset; |
e94cf127 CC |
1578 | } |
1579 | *found = false; | |
1580 | return 0; | |
1581 | } | |
1582 | ||
92de84a6 ILT |
1583 | // Get symbol counts. |
1584 | ||
1585 | template<int size, bool big_endian> | |
1586 | void | |
1587 | Sized_relobj<size, big_endian>::do_get_global_symbol_counts( | |
1588 | const Symbol_table*, | |
1589 | size_t* defined, | |
1590 | size_t* used) const | |
1591 | { | |
1592 | *defined = this->defined_count_; | |
1593 | size_t count = 0; | |
1594 | for (Symbols::const_iterator p = this->symbols_.begin(); | |
1595 | p != this->symbols_.end(); | |
1596 | ++p) | |
1597 | if (*p != NULL | |
1598 | && (*p)->source() == Symbol::FROM_OBJECT | |
1599 | && (*p)->object() == this | |
1600 | && (*p)->is_defined()) | |
1601 | ++count; | |
1602 | *used = count; | |
1603 | } | |
1604 | ||
54dc6425 ILT |
1605 | // Input_objects methods. |
1606 | ||
008db82e ILT |
1607 | // Add a regular relocatable object to the list. Return false if this |
1608 | // object should be ignored. | |
f6ce93d6 | 1609 | |
008db82e | 1610 | bool |
54dc6425 ILT |
1611 | Input_objects::add_object(Object* obj) |
1612 | { | |
fbfba508 | 1613 | // Set the global target from the first object file we recognize. |
019cdb1a | 1614 | Target* target = obj->target(); |
8851ecca | 1615 | if (!parameters->target_valid()) |
fbfba508 | 1616 | set_parameters_target(target); |
8851ecca | 1617 | else if (target != ¶meters->target()) |
019cdb1a | 1618 | { |
fbfba508 | 1619 | obj->error(_("incompatible target")); |
019cdb1a ILT |
1620 | return false; |
1621 | } | |
1622 | ||
c5818ff1 CC |
1623 | // Print the filename if the -t/--trace option is selected. |
1624 | if (parameters->options().trace()) | |
1625 | gold_info("%s", obj->name().c_str()); | |
1626 | ||
008db82e | 1627 | if (!obj->is_dynamic()) |
f6ce93d6 | 1628 | this->relobj_list_.push_back(static_cast<Relobj*>(obj)); |
008db82e ILT |
1629 | else |
1630 | { | |
1631 | // See if this is a duplicate SONAME. | |
1632 | Dynobj* dynobj = static_cast<Dynobj*>(obj); | |
9a2d6984 | 1633 | const char* soname = dynobj->soname(); |
008db82e ILT |
1634 | |
1635 | std::pair<Unordered_set<std::string>::iterator, bool> ins = | |
9a2d6984 | 1636 | this->sonames_.insert(soname); |
008db82e ILT |
1637 | if (!ins.second) |
1638 | { | |
1639 | // We have already seen a dynamic object with this soname. | |
1640 | return false; | |
1641 | } | |
1642 | ||
1643 | this->dynobj_list_.push_back(dynobj); | |
9a2d6984 ILT |
1644 | |
1645 | // If this is -lc, remember the directory in which we found it. | |
1646 | // We use this when issuing warnings about undefined symbols: as | |
1647 | // a heuristic, we don't warn about system libraries found in | |
1648 | // the same directory as -lc. | |
1649 | if (strncmp(soname, "libc.so", 7) == 0) | |
1650 | { | |
1651 | const char* object_name = dynobj->name().c_str(); | |
1652 | const char* base = lbasename(object_name); | |
1653 | if (base != object_name) | |
1654 | this->system_library_directory_.assign(object_name, | |
1655 | base - 1 - object_name); | |
1656 | } | |
008db82e | 1657 | } |
75f65a3e | 1658 | |
92de84a6 ILT |
1659 | // Add this object to the cross-referencer if requested. |
1660 | if (parameters->options().user_set_print_symbol_counts()) | |
1661 | { | |
1662 | if (this->cref_ == NULL) | |
1663 | this->cref_ = new Cref(); | |
1664 | this->cref_->add_object(obj); | |
1665 | } | |
1666 | ||
008db82e | 1667 | return true; |
54dc6425 ILT |
1668 | } |
1669 | ||
9a2d6984 ILT |
1670 | // Return whether an object was found in the system library directory. |
1671 | ||
1672 | bool | |
1673 | Input_objects::found_in_system_library_directory(const Object* object) const | |
1674 | { | |
1675 | return (!this->system_library_directory_.empty() | |
1676 | && object->name().compare(0, | |
1677 | this->system_library_directory_.size(), | |
1678 | this->system_library_directory_) == 0); | |
1679 | } | |
1680 | ||
e2827e5f ILT |
1681 | // For each dynamic object, record whether we've seen all of its |
1682 | // explicit dependencies. | |
1683 | ||
1684 | void | |
1685 | Input_objects::check_dynamic_dependencies() const | |
1686 | { | |
1687 | for (Dynobj_list::const_iterator p = this->dynobj_list_.begin(); | |
1688 | p != this->dynobj_list_.end(); | |
1689 | ++p) | |
1690 | { | |
1691 | const Dynobj::Needed& needed((*p)->needed()); | |
1692 | bool found_all = true; | |
1693 | for (Dynobj::Needed::const_iterator pneeded = needed.begin(); | |
1694 | pneeded != needed.end(); | |
1695 | ++pneeded) | |
1696 | { | |
1697 | if (this->sonames_.find(*pneeded) == this->sonames_.end()) | |
1698 | { | |
1699 | found_all = false; | |
1700 | break; | |
1701 | } | |
1702 | } | |
1703 | (*p)->set_has_unknown_needed_entries(!found_all); | |
1704 | } | |
1705 | } | |
1706 | ||
92de84a6 ILT |
1707 | // Start processing an archive. |
1708 | ||
1709 | void | |
1710 | Input_objects::archive_start(Archive* archive) | |
1711 | { | |
1712 | if (parameters->options().user_set_print_symbol_counts()) | |
1713 | { | |
1714 | if (this->cref_ == NULL) | |
1715 | this->cref_ = new Cref(); | |
1716 | this->cref_->add_archive_start(archive); | |
1717 | } | |
1718 | } | |
1719 | ||
1720 | // Stop processing an archive. | |
1721 | ||
1722 | void | |
1723 | Input_objects::archive_stop(Archive* archive) | |
1724 | { | |
1725 | if (parameters->options().user_set_print_symbol_counts()) | |
1726 | this->cref_->add_archive_stop(archive); | |
1727 | } | |
1728 | ||
1729 | // Print symbol counts | |
1730 | ||
1731 | void | |
1732 | Input_objects::print_symbol_counts(const Symbol_table* symtab) const | |
1733 | { | |
1734 | if (parameters->options().user_set_print_symbol_counts() | |
1735 | && this->cref_ != NULL) | |
1736 | this->cref_->print_symbol_counts(symtab); | |
1737 | } | |
1738 | ||
92e059d8 ILT |
1739 | // Relocate_info methods. |
1740 | ||
1741 | // Return a string describing the location of a relocation. This is | |
1742 | // only used in error messages. | |
1743 | ||
1744 | template<int size, bool big_endian> | |
1745 | std::string | |
f7e2ee48 | 1746 | Relocate_info<size, big_endian>::location(size_t, off_t offset) const |
92e059d8 | 1747 | { |
5c2c6c95 ILT |
1748 | // See if we can get line-number information from debugging sections. |
1749 | std::string filename; | |
1750 | std::string file_and_lineno; // Better than filename-only, if available. | |
4c50553d | 1751 | |
a55ce7fe | 1752 | Sized_dwarf_line_info<size, big_endian> line_info(this->object); |
24badc65 ILT |
1753 | // This will be "" if we failed to parse the debug info for any reason. |
1754 | file_and_lineno = line_info.addr2line(this->data_shndx, offset); | |
4c50553d | 1755 | |
92e059d8 | 1756 | std::string ret(this->object->name()); |
f7e2ee48 ILT |
1757 | ret += ':'; |
1758 | Symbol_location_info info; | |
1759 | if (this->object->get_symbol_location_info(this->data_shndx, offset, &info)) | |
1760 | { | |
1761 | ret += " in function "; | |
1762 | ret += info.enclosing_symbol_name; | |
1763 | ret += ":"; | |
5c2c6c95 ILT |
1764 | filename = info.source_file; |
1765 | } | |
1766 | ||
1767 | if (!file_and_lineno.empty()) | |
1768 | ret += file_and_lineno; | |
1769 | else | |
1770 | { | |
1771 | if (!filename.empty()) | |
1772 | ret += filename; | |
1773 | ret += "("; | |
1774 | ret += this->object->section_name(this->data_shndx); | |
1775 | char buf[100]; | |
1776 | // Offsets into sections have to be positive. | |
1777 | snprintf(buf, sizeof(buf), "+0x%lx", static_cast<long>(offset)); | |
1778 | ret += buf; | |
1779 | ret += ")"; | |
f7e2ee48 | 1780 | } |
92e059d8 ILT |
1781 | return ret; |
1782 | } | |
1783 | ||
bae7f79e ILT |
1784 | } // End namespace gold. |
1785 | ||
1786 | namespace | |
1787 | { | |
1788 | ||
1789 | using namespace gold; | |
1790 | ||
1791 | // Read an ELF file with the header and return the appropriate | |
1792 | // instance of Object. | |
1793 | ||
1794 | template<int size, bool big_endian> | |
1795 | Object* | |
1796 | make_elf_sized_object(const std::string& name, Input_file* input_file, | |
1797 | off_t offset, const elfcpp::Ehdr<size, big_endian>& ehdr) | |
1798 | { | |
1799 | int et = ehdr.get_e_type(); | |
bae7f79e ILT |
1800 | if (et == elfcpp::ET_REL) |
1801 | { | |
f6ce93d6 ILT |
1802 | Sized_relobj<size, big_endian>* obj = |
1803 | new Sized_relobj<size, big_endian>(name, input_file, offset, ehdr); | |
bae7f79e ILT |
1804 | obj->setup(ehdr); |
1805 | return obj; | |
1806 | } | |
dbe717ef ILT |
1807 | else if (et == elfcpp::ET_DYN) |
1808 | { | |
1809 | Sized_dynobj<size, big_endian>* obj = | |
1810 | new Sized_dynobj<size, big_endian>(name, input_file, offset, ehdr); | |
1811 | obj->setup(ehdr); | |
1812 | return obj; | |
1813 | } | |
bae7f79e ILT |
1814 | else |
1815 | { | |
75f2446e ILT |
1816 | gold_error(_("%s: unsupported ELF file type %d"), |
1817 | name.c_str(), et); | |
1818 | return NULL; | |
bae7f79e ILT |
1819 | } |
1820 | } | |
1821 | ||
1822 | } // End anonymous namespace. | |
1823 | ||
1824 | namespace gold | |
1825 | { | |
1826 | ||
1827 | // Read an ELF file and return the appropriate instance of Object. | |
1828 | ||
1829 | Object* | |
1830 | make_elf_object(const std::string& name, Input_file* input_file, off_t offset, | |
8383303e | 1831 | const unsigned char* p, section_offset_type bytes) |
bae7f79e ILT |
1832 | { |
1833 | if (bytes < elfcpp::EI_NIDENT) | |
1834 | { | |
75f2446e ILT |
1835 | gold_error(_("%s: ELF file too short"), name.c_str()); |
1836 | return NULL; | |
bae7f79e ILT |
1837 | } |
1838 | ||
1839 | int v = p[elfcpp::EI_VERSION]; | |
1840 | if (v != elfcpp::EV_CURRENT) | |
1841 | { | |
1842 | if (v == elfcpp::EV_NONE) | |
75f2446e | 1843 | gold_error(_("%s: invalid ELF version 0"), name.c_str()); |
bae7f79e | 1844 | else |
75f2446e ILT |
1845 | gold_error(_("%s: unsupported ELF version %d"), name.c_str(), v); |
1846 | return NULL; | |
bae7f79e ILT |
1847 | } |
1848 | ||
1849 | int c = p[elfcpp::EI_CLASS]; | |
1850 | if (c == elfcpp::ELFCLASSNONE) | |
1851 | { | |
75f2446e ILT |
1852 | gold_error(_("%s: invalid ELF class 0"), name.c_str()); |
1853 | return NULL; | |
bae7f79e ILT |
1854 | } |
1855 | else if (c != elfcpp::ELFCLASS32 | |
1856 | && c != elfcpp::ELFCLASS64) | |
1857 | { | |
75f2446e ILT |
1858 | gold_error(_("%s: unsupported ELF class %d"), name.c_str(), c); |
1859 | return NULL; | |
bae7f79e ILT |
1860 | } |
1861 | ||
1862 | int d = p[elfcpp::EI_DATA]; | |
1863 | if (d == elfcpp::ELFDATANONE) | |
1864 | { | |
75f2446e ILT |
1865 | gold_error(_("%s: invalid ELF data encoding"), name.c_str()); |
1866 | return NULL; | |
bae7f79e ILT |
1867 | } |
1868 | else if (d != elfcpp::ELFDATA2LSB | |
1869 | && d != elfcpp::ELFDATA2MSB) | |
1870 | { | |
75f2446e ILT |
1871 | gold_error(_("%s: unsupported ELF data encoding %d"), name.c_str(), d); |
1872 | return NULL; | |
bae7f79e ILT |
1873 | } |
1874 | ||
1875 | bool big_endian = d == elfcpp::ELFDATA2MSB; | |
1876 | ||
1877 | if (c == elfcpp::ELFCLASS32) | |
1878 | { | |
1879 | if (bytes < elfcpp::Elf_sizes<32>::ehdr_size) | |
1880 | { | |
75f2446e ILT |
1881 | gold_error(_("%s: ELF file too short"), name.c_str()); |
1882 | return NULL; | |
bae7f79e ILT |
1883 | } |
1884 | if (big_endian) | |
1885 | { | |
193a53d9 | 1886 | #ifdef HAVE_TARGET_32_BIG |
bae7f79e ILT |
1887 | elfcpp::Ehdr<32, true> ehdr(p); |
1888 | return make_elf_sized_object<32, true>(name, input_file, | |
1889 | offset, ehdr); | |
193a53d9 | 1890 | #else |
75f2446e ILT |
1891 | gold_error(_("%s: not configured to support " |
1892 | "32-bit big-endian object"), | |
1893 | name.c_str()); | |
1894 | return NULL; | |
193a53d9 | 1895 | #endif |
bae7f79e ILT |
1896 | } |
1897 | else | |
1898 | { | |
193a53d9 | 1899 | #ifdef HAVE_TARGET_32_LITTLE |
bae7f79e ILT |
1900 | elfcpp::Ehdr<32, false> ehdr(p); |
1901 | return make_elf_sized_object<32, false>(name, input_file, | |
1902 | offset, ehdr); | |
193a53d9 | 1903 | #else |
75f2446e ILT |
1904 | gold_error(_("%s: not configured to support " |
1905 | "32-bit little-endian object"), | |
1906 | name.c_str()); | |
1907 | return NULL; | |
193a53d9 | 1908 | #endif |
bae7f79e ILT |
1909 | } |
1910 | } | |
1911 | else | |
1912 | { | |
c165fb93 | 1913 | if (bytes < elfcpp::Elf_sizes<64>::ehdr_size) |
bae7f79e | 1914 | { |
75f2446e ILT |
1915 | gold_error(_("%s: ELF file too short"), name.c_str()); |
1916 | return NULL; | |
bae7f79e ILT |
1917 | } |
1918 | if (big_endian) | |
1919 | { | |
193a53d9 | 1920 | #ifdef HAVE_TARGET_64_BIG |
bae7f79e ILT |
1921 | elfcpp::Ehdr<64, true> ehdr(p); |
1922 | return make_elf_sized_object<64, true>(name, input_file, | |
1923 | offset, ehdr); | |
193a53d9 | 1924 | #else |
75f2446e ILT |
1925 | gold_error(_("%s: not configured to support " |
1926 | "64-bit big-endian object"), | |
1927 | name.c_str()); | |
1928 | return NULL; | |
193a53d9 | 1929 | #endif |
bae7f79e ILT |
1930 | } |
1931 | else | |
1932 | { | |
193a53d9 | 1933 | #ifdef HAVE_TARGET_64_LITTLE |
bae7f79e ILT |
1934 | elfcpp::Ehdr<64, false> ehdr(p); |
1935 | return make_elf_sized_object<64, false>(name, input_file, | |
1936 | offset, ehdr); | |
193a53d9 | 1937 | #else |
75f2446e ILT |
1938 | gold_error(_("%s: not configured to support " |
1939 | "64-bit little-endian object"), | |
1940 | name.c_str()); | |
1941 | return NULL; | |
193a53d9 | 1942 | #endif |
bae7f79e ILT |
1943 | } |
1944 | } | |
1945 | } | |
1946 | ||
04bf7072 ILT |
1947 | // Instantiate the templates we need. |
1948 | ||
1949 | #ifdef HAVE_TARGET_32_LITTLE | |
1950 | template | |
1951 | void | |
1952 | Object::read_section_data<32, false>(elfcpp::Elf_file<32, false, Object>*, | |
1953 | Read_symbols_data*); | |
1954 | #endif | |
1955 | ||
1956 | #ifdef HAVE_TARGET_32_BIG | |
1957 | template | |
1958 | void | |
1959 | Object::read_section_data<32, true>(elfcpp::Elf_file<32, true, Object>*, | |
1960 | Read_symbols_data*); | |
1961 | #endif | |
1962 | ||
1963 | #ifdef HAVE_TARGET_64_LITTLE | |
1964 | template | |
1965 | void | |
1966 | Object::read_section_data<64, false>(elfcpp::Elf_file<64, false, Object>*, | |
1967 | Read_symbols_data*); | |
1968 | #endif | |
1969 | ||
1970 | #ifdef HAVE_TARGET_64_BIG | |
1971 | template | |
1972 | void | |
1973 | Object::read_section_data<64, true>(elfcpp::Elf_file<64, true, Object>*, | |
1974 | Read_symbols_data*); | |
1975 | #endif | |
bae7f79e | 1976 | |
193a53d9 | 1977 | #ifdef HAVE_TARGET_32_LITTLE |
bae7f79e | 1978 | template |
f6ce93d6 | 1979 | class Sized_relobj<32, false>; |
193a53d9 | 1980 | #endif |
bae7f79e | 1981 | |
193a53d9 | 1982 | #ifdef HAVE_TARGET_32_BIG |
bae7f79e | 1983 | template |
f6ce93d6 | 1984 | class Sized_relobj<32, true>; |
193a53d9 | 1985 | #endif |
bae7f79e | 1986 | |
193a53d9 | 1987 | #ifdef HAVE_TARGET_64_LITTLE |
bae7f79e | 1988 | template |
f6ce93d6 | 1989 | class Sized_relobj<64, false>; |
193a53d9 | 1990 | #endif |
bae7f79e | 1991 | |
193a53d9 | 1992 | #ifdef HAVE_TARGET_64_BIG |
bae7f79e | 1993 | template |
f6ce93d6 | 1994 | class Sized_relobj<64, true>; |
193a53d9 | 1995 | #endif |
bae7f79e | 1996 | |
193a53d9 | 1997 | #ifdef HAVE_TARGET_32_LITTLE |
92e059d8 ILT |
1998 | template |
1999 | struct Relocate_info<32, false>; | |
193a53d9 | 2000 | #endif |
92e059d8 | 2001 | |
193a53d9 | 2002 | #ifdef HAVE_TARGET_32_BIG |
92e059d8 ILT |
2003 | template |
2004 | struct Relocate_info<32, true>; | |
193a53d9 | 2005 | #endif |
92e059d8 | 2006 | |
193a53d9 | 2007 | #ifdef HAVE_TARGET_64_LITTLE |
92e059d8 ILT |
2008 | template |
2009 | struct Relocate_info<64, false>; | |
193a53d9 | 2010 | #endif |
92e059d8 | 2011 | |
193a53d9 | 2012 | #ifdef HAVE_TARGET_64_BIG |
92e059d8 ILT |
2013 | template |
2014 | struct Relocate_info<64, true>; | |
193a53d9 | 2015 | #endif |
92e059d8 | 2016 | |
bae7f79e | 2017 | } // End namespace gold. |