1 // dynobj.cc -- dynamic object support for gold
3 // Copyright 2006, 2007, 2008 Free Software Foundation, Inc.
4 // Written by Ian Lance Taylor <iant@google.com>.
6 // This file is part of gold.
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.
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.
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.
29 #include "parameters.h"
39 // Sets up the default soname_ to use, in the (rare) cases we never
40 // see a DT_SONAME entry.
42 Dynobj::Dynobj(const std::string& name, Input_file* input_file, off_t offset)
43 : Object(name, input_file, true, offset),
45 unknown_needed_(UNKNOWN_NEEDED_UNSET)
47 // This will be overridden by a DT_SONAME entry, hopefully. But if
48 // we never see a DT_SONAME entry, our rule is to use the dynamic
49 // object's filename. The only exception is when the dynamic object
50 // is part of an archive (so the filename is the archive's
51 // filename). In that case, we use just the dynobj's name-in-archive.
52 this->soname_ = this->input_file()->found_name();
53 if (this->offset() != 0)
55 std::string::size_type open_paren = this->name().find('(');
56 std::string::size_type close_paren = this->name().find(')');
57 if (open_paren != std::string::npos && close_paren != std::string::npos)
59 // It's an archive, and name() is of the form 'foo.a(bar.so)'.
60 this->soname_ = this->name().substr(open_paren + 1,
61 close_paren - (open_paren + 1));
66 // Class Sized_dynobj.
68 template<int size, bool big_endian>
69 Sized_dynobj<size, big_endian>::Sized_dynobj(
70 const std::string& name,
71 Input_file* input_file,
73 const elfcpp::Ehdr<size, big_endian>& ehdr)
74 : Dynobj(name, input_file, offset),
75 elf_file_(this, ehdr),
84 template<int size, bool big_endian>
86 Sized_dynobj<size, big_endian>::setup()
88 const unsigned int shnum = this->elf_file_.shnum();
89 this->set_shnum(shnum);
92 // Find the SHT_DYNSYM section and the various version sections, and
93 // the dynamic section, given the section headers.
95 template<int size, bool big_endian>
97 Sized_dynobj<size, big_endian>::find_dynsym_sections(
98 const unsigned char* pshdrs,
99 unsigned int* pversym_shndx,
100 unsigned int* pverdef_shndx,
101 unsigned int* pverneed_shndx,
102 unsigned int* pdynamic_shndx)
104 *pversym_shndx = -1U;
105 *pverdef_shndx = -1U;
106 *pverneed_shndx = -1U;
107 *pdynamic_shndx = -1U;
109 unsigned int xindex_shndx = 0;
110 unsigned int xindex_link = 0;
111 const unsigned int shnum = this->shnum();
112 const unsigned char* p = pshdrs;
113 for (unsigned int i = 0; i < shnum; ++i, p += This::shdr_size)
115 typename This::Shdr shdr(p);
118 switch (shdr.get_sh_type())
120 case elfcpp::SHT_DYNSYM:
121 this->dynsym_shndx_ = i;
122 if (xindex_shndx > 0 && xindex_link == i)
124 Xindex* xindex = new Xindex(this->elf_file_.large_shndx_offset());
125 xindex->read_symtab_xindex<size, big_endian>(this, xindex_shndx,
127 this->set_xindex(xindex);
131 case elfcpp::SHT_GNU_versym:
134 case elfcpp::SHT_GNU_verdef:
137 case elfcpp::SHT_GNU_verneed:
140 case elfcpp::SHT_DYNAMIC:
143 case elfcpp::SHT_SYMTAB_SHNDX:
145 xindex_link = this->adjust_shndx(shdr.get_sh_link());
146 if (xindex_link == this->dynsym_shndx_)
148 Xindex* xindex = new Xindex(this->elf_file_.large_shndx_offset());
149 xindex->read_symtab_xindex<size, big_endian>(this, xindex_shndx,
151 this->set_xindex(xindex);
164 this->error(_("unexpected duplicate type %u section: %u, %u"),
165 shdr.get_sh_type(), *pi, i);
171 // Read the contents of section SHNDX. PSHDRS points to the section
172 // headers. TYPE is the expected section type. LINK is the expected
173 // section link. Store the data in *VIEW and *VIEW_SIZE. The
174 // section's sh_info field is stored in *VIEW_INFO.
176 template<int size, bool big_endian>
178 Sized_dynobj<size, big_endian>::read_dynsym_section(
179 const unsigned char* pshdrs,
184 section_size_type* view_size,
185 unsigned int* view_info)
195 typename This::Shdr shdr(pshdrs + shndx * This::shdr_size);
197 gold_assert(shdr.get_sh_type() == type);
199 if (this->adjust_shndx(shdr.get_sh_link()) != link)
200 this->error(_("unexpected link in section %u header: %u != %u"),
201 shndx, this->adjust_shndx(shdr.get_sh_link()), link);
203 *view = this->get_lasting_view(shdr.get_sh_offset(), shdr.get_sh_size(),
205 *view_size = convert_to_section_size_type(shdr.get_sh_size());
206 *view_info = shdr.get_sh_info();
209 // Read the dynamic tags. Set the soname field if this shared object
210 // has a DT_SONAME tag. Record the DT_NEEDED tags. PSHDRS points to
211 // the section headers. DYNAMIC_SHNDX is the section index of the
212 // SHT_DYNAMIC section. STRTAB_SHNDX, STRTAB, and STRTAB_SIZE are the
213 // section index and contents of a string table which may be the one
214 // associated with the SHT_DYNAMIC section.
216 template<int size, bool big_endian>
218 Sized_dynobj<size, big_endian>::read_dynamic(const unsigned char* pshdrs,
219 unsigned int dynamic_shndx,
220 unsigned int strtab_shndx,
221 const unsigned char* strtabu,
224 typename This::Shdr dynamicshdr(pshdrs + dynamic_shndx * This::shdr_size);
225 gold_assert(dynamicshdr.get_sh_type() == elfcpp::SHT_DYNAMIC);
227 const off_t dynamic_size = dynamicshdr.get_sh_size();
228 const unsigned char* pdynamic = this->get_view(dynamicshdr.get_sh_offset(),
229 dynamic_size, true, false);
231 const unsigned int link = this->adjust_shndx(dynamicshdr.get_sh_link());
232 if (link != strtab_shndx)
234 if (link >= this->shnum())
236 this->error(_("DYNAMIC section %u link out of range: %u"),
237 dynamic_shndx, link);
241 typename This::Shdr strtabshdr(pshdrs + link * This::shdr_size);
242 if (strtabshdr.get_sh_type() != elfcpp::SHT_STRTAB)
244 this->error(_("DYNAMIC section %u link %u is not a strtab"),
245 dynamic_shndx, link);
249 strtab_size = strtabshdr.get_sh_size();
250 strtabu = this->get_view(strtabshdr.get_sh_offset(), strtab_size, false,
254 const char* const strtab = reinterpret_cast<const char*>(strtabu);
256 for (const unsigned char* p = pdynamic;
257 p < pdynamic + dynamic_size;
260 typename This::Dyn dyn(p);
262 switch (dyn.get_d_tag())
264 case elfcpp::DT_NULL:
265 // We should always see DT_NULL at the end of the dynamic
269 case elfcpp::DT_SONAME:
271 off_t val = dyn.get_d_val();
272 if (val >= strtab_size)
273 this->error(_("DT_SONAME value out of range: %lld >= %lld"),
274 static_cast<long long>(val),
275 static_cast<long long>(strtab_size));
277 this->set_soname_string(strtab + val);
281 case elfcpp::DT_NEEDED:
283 off_t val = dyn.get_d_val();
284 if (val >= strtab_size)
285 this->error(_("DT_NEEDED value out of range: %lld >= %lld"),
286 static_cast<long long>(val),
287 static_cast<long long>(strtab_size));
289 this->add_needed(strtab + val);
298 this->error(_("missing DT_NULL in dynamic segment"));
301 // Read the symbols and sections from a dynamic object. We read the
302 // dynamic symbols, not the normal symbols.
304 template<int size, bool big_endian>
306 Sized_dynobj<size, big_endian>::do_read_symbols(Read_symbols_data* sd)
308 this->read_section_data(&this->elf_file_, sd);
310 const unsigned char* const pshdrs = sd->section_headers->data();
312 unsigned int versym_shndx;
313 unsigned int verdef_shndx;
314 unsigned int verneed_shndx;
315 unsigned int dynamic_shndx;
316 this->find_dynsym_sections(pshdrs, &versym_shndx, &verdef_shndx,
317 &verneed_shndx, &dynamic_shndx);
319 unsigned int strtab_shndx = -1U;
322 sd->symbols_size = 0;
323 sd->external_symbols_offset = 0;
324 sd->symbol_names = NULL;
325 sd->symbol_names_size = 0;
327 if (this->dynsym_shndx_ != -1U)
329 // Get the dynamic symbols.
330 typename This::Shdr dynsymshdr(pshdrs
331 + this->dynsym_shndx_ * This::shdr_size);
332 gold_assert(dynsymshdr.get_sh_type() == elfcpp::SHT_DYNSYM);
334 sd->symbols = this->get_lasting_view(dynsymshdr.get_sh_offset(),
335 dynsymshdr.get_sh_size(), true,
338 convert_to_section_size_type(dynsymshdr.get_sh_size());
340 // Get the symbol names.
341 strtab_shndx = this->adjust_shndx(dynsymshdr.get_sh_link());
342 if (strtab_shndx >= this->shnum())
344 this->error(_("invalid dynamic symbol table name index: %u"),
348 typename This::Shdr strtabshdr(pshdrs + strtab_shndx * This::shdr_size);
349 if (strtabshdr.get_sh_type() != elfcpp::SHT_STRTAB)
351 this->error(_("dynamic symbol table name section "
352 "has wrong type: %u"),
353 static_cast<unsigned int>(strtabshdr.get_sh_type()));
357 sd->symbol_names = this->get_lasting_view(strtabshdr.get_sh_offset(),
358 strtabshdr.get_sh_size(),
360 sd->symbol_names_size =
361 convert_to_section_size_type(strtabshdr.get_sh_size());
363 // Get the version information.
366 this->read_dynsym_section(pshdrs, versym_shndx, elfcpp::SHT_GNU_versym,
368 &sd->versym, &sd->versym_size, &dummy);
370 // We require that the version definition and need section link
371 // to the same string table as the dynamic symbol table. This
372 // is not a technical requirement, but it always happens in
373 // practice. We could change this if necessary.
375 this->read_dynsym_section(pshdrs, verdef_shndx, elfcpp::SHT_GNU_verdef,
376 strtab_shndx, &sd->verdef, &sd->verdef_size,
379 this->read_dynsym_section(pshdrs, verneed_shndx, elfcpp::SHT_GNU_verneed,
380 strtab_shndx, &sd->verneed, &sd->verneed_size,
384 // Read the SHT_DYNAMIC section to find whether this shared object
385 // has a DT_SONAME tag and to record any DT_NEEDED tags. This
386 // doesn't really have anything to do with reading the symbols, but
387 // this is a convenient place to do it.
388 if (dynamic_shndx != -1U)
389 this->read_dynamic(pshdrs, dynamic_shndx, strtab_shndx,
390 (sd->symbol_names == NULL
392 : sd->symbol_names->data()),
393 sd->symbol_names_size);
396 // Return the Xindex structure to use for object with lots of
399 template<int size, bool big_endian>
401 Sized_dynobj<size, big_endian>::do_initialize_xindex()
403 gold_assert(this->dynsym_shndx_ != -1U);
404 Xindex* xindex = new Xindex(this->elf_file_.large_shndx_offset());
405 xindex->initialize_symtab_xindex<size, big_endian>(this, this->dynsym_shndx_);
409 // Lay out the input sections for a dynamic object. We don't want to
410 // include sections from a dynamic object, so all that we actually do
411 // here is check for .gnu.warning and .note.GNU-split-stack sections.
413 template<int size, bool big_endian>
415 Sized_dynobj<size, big_endian>::do_layout(Symbol_table* symtab,
417 Read_symbols_data* sd)
419 const unsigned int shnum = this->shnum();
423 // Get the section headers.
424 const unsigned char* pshdrs = sd->section_headers->data();
426 // Get the section names.
427 const unsigned char* pnamesu = sd->section_names->data();
428 const char* pnames = reinterpret_cast<const char*>(pnamesu);
430 // Skip the first, dummy, section.
431 pshdrs += This::shdr_size;
432 for (unsigned int i = 1; i < shnum; ++i, pshdrs += This::shdr_size)
434 typename This::Shdr shdr(pshdrs);
436 if (shdr.get_sh_name() >= sd->section_names_size)
438 this->error(_("bad section name offset for section %u: %lu"),
439 i, static_cast<unsigned long>(shdr.get_sh_name()));
443 const char* name = pnames + shdr.get_sh_name();
445 this->handle_gnu_warning_section(name, i, symtab);
446 this->handle_split_stack_section(name);
449 delete sd->section_headers;
450 sd->section_headers = NULL;
451 delete sd->section_names;
452 sd->section_names = NULL;
455 // Add an entry to the vector mapping version numbers to version
458 template<int size, bool big_endian>
460 Sized_dynobj<size, big_endian>::set_version_map(
461 Version_map* version_map,
463 const char* name) const
465 if (ndx >= version_map->size())
466 version_map->resize(ndx + 1);
467 if ((*version_map)[ndx] != NULL)
468 this->error(_("duplicate definition for version %u"), ndx);
469 (*version_map)[ndx] = name;
472 // Add mappings for the version definitions to VERSION_MAP.
474 template<int size, bool big_endian>
476 Sized_dynobj<size, big_endian>::make_verdef_map(
477 Read_symbols_data* sd,
478 Version_map* version_map) const
480 if (sd->verdef == NULL)
483 const char* names = reinterpret_cast<const char*>(sd->symbol_names->data());
484 section_size_type names_size = sd->symbol_names_size;
486 const unsigned char* pverdef = sd->verdef->data();
487 section_size_type verdef_size = sd->verdef_size;
488 const unsigned int count = sd->verdef_info;
490 const unsigned char* p = pverdef;
491 for (unsigned int i = 0; i < count; ++i)
493 elfcpp::Verdef<size, big_endian> verdef(p);
495 if (verdef.get_vd_version() != elfcpp::VER_DEF_CURRENT)
497 this->error(_("unexpected verdef version %u"),
498 verdef.get_vd_version());
502 const section_size_type vd_ndx = verdef.get_vd_ndx();
504 // The GNU linker clears the VERSYM_HIDDEN bit. I'm not
507 // The first Verdaux holds the name of this version. Subsequent
508 // ones are versions that this one depends upon, which we don't
510 const section_size_type vd_cnt = verdef.get_vd_cnt();
513 this->error(_("verdef vd_cnt field too small: %u"),
514 static_cast<unsigned int>(vd_cnt));
518 const section_size_type vd_aux = verdef.get_vd_aux();
519 if ((p - pverdef) + vd_aux >= verdef_size)
521 this->error(_("verdef vd_aux field out of range: %u"),
522 static_cast<unsigned int>(vd_aux));
526 const unsigned char* pvda = p + vd_aux;
527 elfcpp::Verdaux<size, big_endian> verdaux(pvda);
529 const section_size_type vda_name = verdaux.get_vda_name();
530 if (vda_name >= names_size)
532 this->error(_("verdaux vda_name field out of range: %u"),
533 static_cast<unsigned int>(vda_name));
537 this->set_version_map(version_map, vd_ndx, names + vda_name);
539 const section_size_type vd_next = verdef.get_vd_next();
540 if ((p - pverdef) + vd_next >= verdef_size)
542 this->error(_("verdef vd_next field out of range: %u"),
543 static_cast<unsigned int>(vd_next));
551 // Add mappings for the required versions to VERSION_MAP.
553 template<int size, bool big_endian>
555 Sized_dynobj<size, big_endian>::make_verneed_map(
556 Read_symbols_data* sd,
557 Version_map* version_map) const
559 if (sd->verneed == NULL)
562 const char* names = reinterpret_cast<const char*>(sd->symbol_names->data());
563 section_size_type names_size = sd->symbol_names_size;
565 const unsigned char* pverneed = sd->verneed->data();
566 const section_size_type verneed_size = sd->verneed_size;
567 const unsigned int count = sd->verneed_info;
569 const unsigned char* p = pverneed;
570 for (unsigned int i = 0; i < count; ++i)
572 elfcpp::Verneed<size, big_endian> verneed(p);
574 if (verneed.get_vn_version() != elfcpp::VER_NEED_CURRENT)
576 this->error(_("unexpected verneed version %u"),
577 verneed.get_vn_version());
581 const section_size_type vn_aux = verneed.get_vn_aux();
583 if ((p - pverneed) + vn_aux >= verneed_size)
585 this->error(_("verneed vn_aux field out of range: %u"),
586 static_cast<unsigned int>(vn_aux));
590 const unsigned int vn_cnt = verneed.get_vn_cnt();
591 const unsigned char* pvna = p + vn_aux;
592 for (unsigned int j = 0; j < vn_cnt; ++j)
594 elfcpp::Vernaux<size, big_endian> vernaux(pvna);
596 const unsigned int vna_name = vernaux.get_vna_name();
597 if (vna_name >= names_size)
599 this->error(_("vernaux vna_name field out of range: %u"),
600 static_cast<unsigned int>(vna_name));
604 this->set_version_map(version_map, vernaux.get_vna_other(),
607 const section_size_type vna_next = vernaux.get_vna_next();
608 if ((pvna - pverneed) + vna_next >= verneed_size)
610 this->error(_("verneed vna_next field out of range: %u"),
611 static_cast<unsigned int>(vna_next));
618 const section_size_type vn_next = verneed.get_vn_next();
619 if ((p - pverneed) + vn_next >= verneed_size)
621 this->error(_("verneed vn_next field out of range: %u"),
622 static_cast<unsigned int>(vn_next));
630 // Create a vector mapping version numbers to version strings.
632 template<int size, bool big_endian>
634 Sized_dynobj<size, big_endian>::make_version_map(
635 Read_symbols_data* sd,
636 Version_map* version_map) const
638 if (sd->verdef == NULL && sd->verneed == NULL)
641 // A guess at the maximum version number we will see. If this is
642 // wrong we will be less efficient but still correct.
643 version_map->reserve(sd->verdef_info + sd->verneed_info * 10);
645 this->make_verdef_map(sd, version_map);
646 this->make_verneed_map(sd, version_map);
649 // Add the dynamic symbols to the symbol table.
651 template<int size, bool big_endian>
653 Sized_dynobj<size, big_endian>::do_add_symbols(Symbol_table* symtab,
654 Read_symbols_data* sd,
657 if (sd->symbols == NULL)
659 gold_assert(sd->symbol_names == NULL);
660 gold_assert(sd->versym == NULL && sd->verdef == NULL
661 && sd->verneed == NULL);
665 const int sym_size = This::sym_size;
666 const size_t symcount = sd->symbols_size / sym_size;
667 gold_assert(sd->external_symbols_offset == 0);
668 if (symcount * sym_size != sd->symbols_size)
670 this->error(_("size of dynamic symbols is not multiple of symbol size"));
674 Version_map version_map;
675 this->make_version_map(sd, &version_map);
677 // If printing symbol counts, we want to track symbols.
679 if (parameters->options().user_set_print_symbol_counts())
681 this->symbols_ = new Symbols();
682 this->symbols_->resize(symcount);
685 const char* sym_names =
686 reinterpret_cast<const char*>(sd->symbol_names->data());
687 symtab->add_from_dynobj(this, sd->symbols->data(), symcount,
688 sym_names, sd->symbol_names_size,
691 : sd->versym->data()),
695 &this->defined_count_);
699 delete sd->symbol_names;
700 sd->symbol_names = NULL;
701 if (sd->versym != NULL)
706 if (sd->verdef != NULL)
711 if (sd->verneed != NULL)
717 // This is normally the last time we will read any data from this
719 this->clear_view_cache_marks();
722 // Get symbol counts.
724 template<int size, bool big_endian>
726 Sized_dynobj<size, big_endian>::do_get_global_symbol_counts(
731 *defined = this->defined_count_;
733 for (typename Symbols::const_iterator p = this->symbols_->begin();
734 p != this->symbols_->end();
737 && (*p)->source() == Symbol::FROM_OBJECT
738 && (*p)->object() == this
739 && (*p)->is_defined()
740 && (*p)->dynsym_index() != -1U)
745 // Given a vector of hash codes, compute the number of hash buckets to
749 Dynobj::compute_bucket_count(const std::vector<uint32_t>& hashcodes,
750 bool for_gnu_hash_table)
752 // FIXME: Implement optional hash table optimization.
754 // Array used to determine the number of hash table buckets to use
755 // based on the number of symbols there are. If there are fewer
756 // than 3 symbols we use 1 bucket, fewer than 17 symbols we use 3
757 // buckets, fewer than 37 we use 17 buckets, and so forth. We never
758 // use more than 262147 buckets. This is straight from the old GNU
760 static const unsigned int buckets[] =
762 1, 3, 17, 37, 67, 97, 131, 197, 263, 521, 1031, 2053, 4099, 8209,
763 16411, 32771, 65537, 131101, 262147
765 const int buckets_count = sizeof buckets / sizeof buckets[0];
767 unsigned int symcount = hashcodes.size();
768 unsigned int ret = 1;
769 const double full_fraction
770 = 1.0 - parameters->options().hash_bucket_empty_fraction();
771 for (int i = 0; i < buckets_count; ++i)
773 if (symcount < buckets[i] * full_fraction)
778 if (for_gnu_hash_table && ret < 2)
784 // The standard ELF hash function. This hash function must not
785 // change, as the dynamic linker uses it also.
788 Dynobj::elf_hash(const char* name)
790 const unsigned char* nameu = reinterpret_cast<const unsigned char*>(name);
793 while ((c = *nameu++) != '\0')
796 uint32_t g = h & 0xf0000000;
800 // The ELF ABI says h &= ~g, but using xor is equivalent in
801 // this case (since g was set from h) and may save one
809 // Create a standard ELF hash table, setting *PPHASH and *PHASHLEN.
810 // DYNSYMS is a vector with all the global dynamic symbols.
811 // LOCAL_DYNSYM_COUNT is the number of local symbols in the dynamic
815 Dynobj::create_elf_hash_table(const std::vector<Symbol*>& dynsyms,
816 unsigned int local_dynsym_count,
817 unsigned char** pphash,
818 unsigned int* phashlen)
820 unsigned int dynsym_count = dynsyms.size();
822 // Get the hash values for all the symbols.
823 std::vector<uint32_t> dynsym_hashvals(dynsym_count);
824 for (unsigned int i = 0; i < dynsym_count; ++i)
825 dynsym_hashvals[i] = Dynobj::elf_hash(dynsyms[i]->name());
827 const unsigned int bucketcount =
828 Dynobj::compute_bucket_count(dynsym_hashvals, false);
830 std::vector<uint32_t> bucket(bucketcount);
831 std::vector<uint32_t> chain(local_dynsym_count + dynsym_count);
833 for (unsigned int i = 0; i < dynsym_count; ++i)
835 unsigned int dynsym_index = dynsyms[i]->dynsym_index();
836 unsigned int bucketpos = dynsym_hashvals[i] % bucketcount;
837 chain[dynsym_index] = bucket[bucketpos];
838 bucket[bucketpos] = dynsym_index;
841 unsigned int hashlen = ((2
846 unsigned char* phash = new unsigned char[hashlen];
848 if (parameters->target().is_big_endian())
850 #if defined(HAVE_TARGET_32_BIG) || defined(HAVE_TARGET_64_BIG)
851 Dynobj::sized_create_elf_hash_table<true>(bucket, chain, phash,
859 #if defined(HAVE_TARGET_32_LITTLE) || defined(HAVE_TARGET_64_LITTLE)
860 Dynobj::sized_create_elf_hash_table<false>(bucket, chain, phash,
871 // Fill in an ELF hash table.
873 template<bool big_endian>
875 Dynobj::sized_create_elf_hash_table(const std::vector<uint32_t>& bucket,
876 const std::vector<uint32_t>& chain,
877 unsigned char* phash,
878 unsigned int hashlen)
880 unsigned char* p = phash;
882 const unsigned int bucketcount = bucket.size();
883 const unsigned int chaincount = chain.size();
885 elfcpp::Swap<32, big_endian>::writeval(p, bucketcount);
887 elfcpp::Swap<32, big_endian>::writeval(p, chaincount);
890 for (unsigned int i = 0; i < bucketcount; ++i)
892 elfcpp::Swap<32, big_endian>::writeval(p, bucket[i]);
896 for (unsigned int i = 0; i < chaincount; ++i)
898 elfcpp::Swap<32, big_endian>::writeval(p, chain[i]);
902 gold_assert(static_cast<unsigned int>(p - phash) == hashlen);
905 // The hash function used for the GNU hash table. This hash function
906 // must not change, as the dynamic linker uses it also.
909 Dynobj::gnu_hash(const char* name)
911 const unsigned char* nameu = reinterpret_cast<const unsigned char*>(name);
914 while ((c = *nameu++) != '\0')
915 h = (h << 5) + h + c;
919 // Create a GNU hash table, setting *PPHASH and *PHASHLEN. GNU hash
920 // tables are an extension to ELF which are recognized by the GNU
921 // dynamic linker. They are referenced using dynamic tag DT_GNU_HASH.
922 // TARGET is the target. DYNSYMS is a vector with all the global
923 // symbols which will be going into the dynamic symbol table.
924 // LOCAL_DYNSYM_COUNT is the number of local symbols in the dynamic
928 Dynobj::create_gnu_hash_table(const std::vector<Symbol*>& dynsyms,
929 unsigned int local_dynsym_count,
930 unsigned char** pphash,
931 unsigned int* phashlen)
933 const unsigned int count = dynsyms.size();
935 // Sort the dynamic symbols into two vectors. Symbols which we do
936 // not want to put into the hash table we store into
937 // UNHASHED_DYNSYMS. Symbols which we do want to store we put into
938 // HASHED_DYNSYMS. DYNSYM_HASHVALS is parallel to HASHED_DYNSYMS,
939 // and records the hash codes.
941 std::vector<Symbol*> unhashed_dynsyms;
942 unhashed_dynsyms.reserve(count);
944 std::vector<Symbol*> hashed_dynsyms;
945 hashed_dynsyms.reserve(count);
947 std::vector<uint32_t> dynsym_hashvals;
948 dynsym_hashvals.reserve(count);
950 for (unsigned int i = 0; i < count; ++i)
952 Symbol* sym = dynsyms[i];
954 // FIXME: Should put on unhashed_dynsyms if the symbol is
956 if (sym->is_undefined())
957 unhashed_dynsyms.push_back(sym);
960 hashed_dynsyms.push_back(sym);
961 dynsym_hashvals.push_back(Dynobj::gnu_hash(sym->name()));
965 // Put the unhashed symbols at the start of the global portion of
966 // the dynamic symbol table.
967 const unsigned int unhashed_count = unhashed_dynsyms.size();
968 unsigned int unhashed_dynsym_index = local_dynsym_count;
969 for (unsigned int i = 0; i < unhashed_count; ++i)
971 unhashed_dynsyms[i]->set_dynsym_index(unhashed_dynsym_index);
972 ++unhashed_dynsym_index;
975 // For the actual data generation we call out to a templatized
977 int size = parameters->target().get_size();
978 bool big_endian = parameters->target().is_big_endian();
983 #ifdef HAVE_TARGET_32_BIG
984 Dynobj::sized_create_gnu_hash_table<32, true>(hashed_dynsyms,
986 unhashed_dynsym_index,
995 #ifdef HAVE_TARGET_32_LITTLE
996 Dynobj::sized_create_gnu_hash_table<32, false>(hashed_dynsyms,
998 unhashed_dynsym_index,
1006 else if (size == 64)
1010 #ifdef HAVE_TARGET_64_BIG
1011 Dynobj::sized_create_gnu_hash_table<64, true>(hashed_dynsyms,
1013 unhashed_dynsym_index,
1022 #ifdef HAVE_TARGET_64_LITTLE
1023 Dynobj::sized_create_gnu_hash_table<64, false>(hashed_dynsyms,
1025 unhashed_dynsym_index,
1037 // Create the actual data for a GNU hash table. This is just a copy
1038 // of the code from the old GNU linker.
1040 template<int size, bool big_endian>
1042 Dynobj::sized_create_gnu_hash_table(
1043 const std::vector<Symbol*>& hashed_dynsyms,
1044 const std::vector<uint32_t>& dynsym_hashvals,
1045 unsigned int unhashed_dynsym_count,
1046 unsigned char** pphash,
1047 unsigned int* phashlen)
1049 if (hashed_dynsyms.empty())
1051 // Special case for the empty hash table.
1052 unsigned int hashlen = 5 * 4 + size / 8;
1053 unsigned char* phash = new unsigned char[hashlen];
1054 // One empty bucket.
1055 elfcpp::Swap<32, big_endian>::writeval(phash, 1);
1056 // Symbol index above unhashed symbols.
1057 elfcpp::Swap<32, big_endian>::writeval(phash + 4, unhashed_dynsym_count);
1058 // One word for bitmask.
1059 elfcpp::Swap<32, big_endian>::writeval(phash + 8, 1);
1060 // Only bloom filter.
1061 elfcpp::Swap<32, big_endian>::writeval(phash + 12, 0);
1063 elfcpp::Swap<size, big_endian>::writeval(phash + 16, 0);
1064 // No hashes in only bucket.
1065 elfcpp::Swap<32, big_endian>::writeval(phash + 16 + size / 8, 0);
1067 *phashlen = hashlen;
1073 const unsigned int bucketcount =
1074 Dynobj::compute_bucket_count(dynsym_hashvals, true);
1076 const unsigned int nsyms = hashed_dynsyms.size();
1078 uint32_t maskbitslog2 = 1;
1079 uint32_t x = nsyms >> 1;
1085 if (maskbitslog2 < 3)
1087 else if (((1U << (maskbitslog2 - 2)) & nsyms) != 0)
1097 if (maskbitslog2 == 5)
1101 uint32_t mask = (1U << shift1) - 1U;
1102 uint32_t shift2 = maskbitslog2;
1103 uint32_t maskbits = 1U << maskbitslog2;
1104 uint32_t maskwords = 1U << (maskbitslog2 - shift1);
1106 typedef typename elfcpp::Elf_types<size>::Elf_WXword Word;
1107 std::vector<Word> bitmask(maskwords);
1108 std::vector<uint32_t> counts(bucketcount);
1109 std::vector<uint32_t> indx(bucketcount);
1110 uint32_t symindx = unhashed_dynsym_count;
1112 // Count the number of times each hash bucket is used.
1113 for (unsigned int i = 0; i < nsyms; ++i)
1114 ++counts[dynsym_hashvals[i] % bucketcount];
1116 unsigned int cnt = symindx;
1117 for (unsigned int i = 0; i < bucketcount; ++i)
1123 unsigned int hashlen = (4 + bucketcount + nsyms) * 4;
1124 hashlen += maskbits / 8;
1125 unsigned char* phash = new unsigned char[hashlen];
1127 elfcpp::Swap<32, big_endian>::writeval(phash, bucketcount);
1128 elfcpp::Swap<32, big_endian>::writeval(phash + 4, symindx);
1129 elfcpp::Swap<32, big_endian>::writeval(phash + 8, maskwords);
1130 elfcpp::Swap<32, big_endian>::writeval(phash + 12, shift2);
1132 unsigned char* p = phash + 16 + maskbits / 8;
1133 for (unsigned int i = 0; i < bucketcount; ++i)
1136 elfcpp::Swap<32, big_endian>::writeval(p, 0);
1138 elfcpp::Swap<32, big_endian>::writeval(p, indx[i]);
1142 for (unsigned int i = 0; i < nsyms; ++i)
1144 Symbol* sym = hashed_dynsyms[i];
1145 uint32_t hashval = dynsym_hashvals[i];
1147 unsigned int bucket = hashval % bucketcount;
1148 unsigned int val = ((hashval >> shift1)
1149 & ((maskbits >> shift1) - 1));
1150 bitmask[val] |= (static_cast<Word>(1U)) << (hashval & mask);
1151 bitmask[val] |= (static_cast<Word>(1U)) << ((hashval >> shift2) & mask);
1152 val = hashval & ~ 1U;
1153 if (counts[bucket] == 1)
1155 // Last element terminates the chain.
1158 elfcpp::Swap<32, big_endian>::writeval(p + (indx[bucket] - symindx) * 4,
1162 sym->set_dynsym_index(indx[bucket]);
1167 for (unsigned int i = 0; i < maskwords; ++i)
1169 elfcpp::Swap<size, big_endian>::writeval(p, bitmask[i]);
1173 *phashlen = hashlen;
1179 // Write this definition to a buffer for the output section.
1181 template<int size, bool big_endian>
1183 Verdef::write(const Stringpool* dynpool, bool is_last, unsigned char* pb) const
1185 const int verdef_size = elfcpp::Elf_sizes<size>::verdef_size;
1186 const int verdaux_size = elfcpp::Elf_sizes<size>::verdaux_size;
1188 elfcpp::Verdef_write<size, big_endian> vd(pb);
1189 vd.set_vd_version(elfcpp::VER_DEF_CURRENT);
1190 vd.set_vd_flags((this->is_base_ ? elfcpp::VER_FLG_BASE : 0)
1191 | (this->is_weak_ ? elfcpp::VER_FLG_WEAK : 0));
1192 vd.set_vd_ndx(this->index());
1193 vd.set_vd_cnt(1 + this->deps_.size());
1194 vd.set_vd_hash(Dynobj::elf_hash(this->name()));
1195 vd.set_vd_aux(verdef_size);
1196 vd.set_vd_next(is_last
1198 : verdef_size + (1 + this->deps_.size()) * verdaux_size);
1201 elfcpp::Verdaux_write<size, big_endian> vda(pb);
1202 vda.set_vda_name(dynpool->get_offset(this->name()));
1203 vda.set_vda_next(this->deps_.empty() ? 0 : verdaux_size);
1206 Deps::const_iterator p;
1208 for (p = this->deps_.begin(), i = 0;
1209 p != this->deps_.end();
1212 elfcpp::Verdaux_write<size, big_endian> vda(pb);
1213 vda.set_vda_name(dynpool->get_offset(*p));
1214 vda.set_vda_next(i + 1 >= this->deps_.size() ? 0 : verdaux_size);
1225 for (Need_versions::iterator p = this->need_versions_.begin();
1226 p != this->need_versions_.end();
1231 // Add a new version to this file reference.
1234 Verneed::add_name(const char* name)
1236 Verneed_version* vv = new Verneed_version(name);
1237 this->need_versions_.push_back(vv);
1241 // Set the version indexes starting at INDEX.
1244 Verneed::finalize(unsigned int index)
1246 for (Need_versions::iterator p = this->need_versions_.begin();
1247 p != this->need_versions_.end();
1250 (*p)->set_index(index);
1256 // Write this list of referenced versions to a buffer for the output
1259 template<int size, bool big_endian>
1261 Verneed::write(const Stringpool* dynpool, bool is_last,
1262 unsigned char* pb) const
1264 const int verneed_size = elfcpp::Elf_sizes<size>::verneed_size;
1265 const int vernaux_size = elfcpp::Elf_sizes<size>::vernaux_size;
1267 elfcpp::Verneed_write<size, big_endian> vn(pb);
1268 vn.set_vn_version(elfcpp::VER_NEED_CURRENT);
1269 vn.set_vn_cnt(this->need_versions_.size());
1270 vn.set_vn_file(dynpool->get_offset(this->filename()));
1271 vn.set_vn_aux(verneed_size);
1272 vn.set_vn_next(is_last
1274 : verneed_size + this->need_versions_.size() * vernaux_size);
1277 Need_versions::const_iterator p;
1279 for (p = this->need_versions_.begin(), i = 0;
1280 p != this->need_versions_.end();
1283 elfcpp::Vernaux_write<size, big_endian> vna(pb);
1284 vna.set_vna_hash(Dynobj::elf_hash((*p)->version()));
1285 // FIXME: We need to sometimes set VER_FLG_WEAK here.
1286 vna.set_vna_flags(0);
1287 vna.set_vna_other((*p)->index());
1288 vna.set_vna_name(dynpool->get_offset((*p)->version()));
1289 vna.set_vna_next(i + 1 >= this->need_versions_.size()
1298 // Versions methods.
1300 Versions::Versions(const Version_script_info& version_script,
1301 Stringpool* dynpool)
1302 : defs_(), needs_(), version_table_(),
1303 is_finalized_(false), version_script_(version_script)
1305 // We always need a base version, so define that first. Nothing
1306 // explicitly declares itself as part of base, so it doesn't need to
1307 // be in version_table_.
1308 if (parameters->options().shared())
1310 const char* name = parameters->options().soname();
1312 name = parameters->options().output_file_name();
1313 name = dynpool->add(name, false, NULL);
1314 Verdef* vdbase = new Verdef(name, std::vector<std::string>(),
1316 this->defs_.push_back(vdbase);
1319 if (!this->version_script_.empty())
1321 // Parse the version script, and insert each declared version into
1322 // defs_ and version_table_.
1323 std::vector<std::string> versions = this->version_script_.get_versions();
1324 for (size_t k = 0; k < versions.size(); ++k)
1326 Stringpool::Key version_key;
1327 const char* version = dynpool->add(versions[k].c_str(),
1328 true, &version_key);
1329 Verdef* const vd = new Verdef(
1331 this->version_script_.get_dependencies(version),
1332 false, false, false);
1333 this->defs_.push_back(vd);
1334 Key key(version_key, 0);
1335 this->version_table_.insert(std::make_pair(key, vd));
1340 Versions::~Versions()
1342 for (Defs::iterator p = this->defs_.begin();
1343 p != this->defs_.end();
1347 for (Needs::iterator p = this->needs_.begin();
1348 p != this->needs_.end();
1353 // Return the dynamic object which a symbol refers to.
1356 Versions::get_dynobj_for_sym(const Symbol_table* symtab,
1357 const Symbol* sym) const
1359 if (sym->is_copied_from_dynobj())
1360 return symtab->get_copy_source(sym);
1363 Object* object = sym->object();
1364 gold_assert(object->is_dynamic());
1365 return static_cast<Dynobj*>(object);
1369 // Record version information for a symbol going into the dynamic
1373 Versions::record_version(const Symbol_table* symtab,
1374 Stringpool* dynpool, const Symbol* sym)
1376 gold_assert(!this->is_finalized_);
1377 gold_assert(sym->version() != NULL);
1379 Stringpool::Key version_key;
1380 const char* version = dynpool->add(sym->version(), false, &version_key);
1382 if (!sym->is_from_dynobj() && !sym->is_copied_from_dynobj())
1384 if (parameters->options().shared())
1385 this->add_def(sym, version, version_key);
1389 // This is a version reference.
1390 Dynobj* dynobj = this->get_dynobj_for_sym(symtab, sym);
1391 this->add_need(dynpool, dynobj->soname(), version, version_key);
1395 // We've found a symbol SYM defined in version VERSION.
1398 Versions::add_def(const Symbol* sym, const char* version,
1399 Stringpool::Key version_key)
1401 Key k(version_key, 0);
1402 Version_base* const vbnull = NULL;
1403 std::pair<Version_table::iterator, bool> ins =
1404 this->version_table_.insert(std::make_pair(k, vbnull));
1408 // We already have an entry for this version.
1409 Version_base* vb = ins.first->second;
1411 // We have now seen a symbol in this version, so it is not
1413 gold_assert(vb != NULL);
1418 // If we are creating a shared object, it is an error to
1419 // find a definition of a symbol with a version which is not
1420 // in the version script.
1421 if (parameters->options().shared())
1422 gold_error(_("symbol %s has undefined version %s"),
1423 sym->demangled_name().c_str(), version);
1425 // When creating a regular executable, automatically define
1427 Verdef* vd = new Verdef(version, std::vector<std::string>(),
1428 false, false, false);
1429 this->defs_.push_back(vd);
1430 ins.first->second = vd;
1434 // Add a reference to version NAME in file FILENAME.
1437 Versions::add_need(Stringpool* dynpool, const char* filename, const char* name,
1438 Stringpool::Key name_key)
1440 Stringpool::Key filename_key;
1441 filename = dynpool->add(filename, true, &filename_key);
1443 Key k(name_key, filename_key);
1444 Version_base* const vbnull = NULL;
1445 std::pair<Version_table::iterator, bool> ins =
1446 this->version_table_.insert(std::make_pair(k, vbnull));
1450 // We already have an entry for this filename/version.
1454 // See whether we already have this filename. We don't expect many
1455 // version references, so we just do a linear search. This could be
1456 // replaced by a hash table.
1458 for (Needs::iterator p = this->needs_.begin();
1459 p != this->needs_.end();
1462 if ((*p)->filename() == filename)
1471 // We have a new filename.
1472 vn = new Verneed(filename);
1473 this->needs_.push_back(vn);
1476 ins.first->second = vn->add_name(name);
1479 // Set the version indexes. Create a new dynamic version symbol for
1480 // each new version definition.
1483 Versions::finalize(Symbol_table* symtab, unsigned int dynsym_index,
1484 std::vector<Symbol*>* syms)
1486 gold_assert(!this->is_finalized_);
1488 unsigned int vi = 1;
1490 for (Defs::iterator p = this->defs_.begin();
1491 p != this->defs_.end();
1494 (*p)->set_index(vi);
1497 // Create a version symbol if necessary.
1498 if (!(*p)->is_symbol_created())
1500 Symbol* vsym = symtab->define_as_constant((*p)->name(),
1504 elfcpp::STV_DEFAULT, 0,
1506 vsym->set_needs_dynsym_entry();
1507 vsym->set_dynsym_index(dynsym_index);
1509 syms->push_back(vsym);
1510 // The name is already in the dynamic pool.
1514 // Index 1 is used for global symbols.
1517 gold_assert(this->defs_.empty());
1521 for (Needs::iterator p = this->needs_.begin();
1522 p != this->needs_.end();
1524 vi = (*p)->finalize(vi);
1526 this->is_finalized_ = true;
1528 return dynsym_index;
1531 // Return the version index to use for a symbol. This does two hash
1532 // table lookups: one in DYNPOOL and one in this->version_table_.
1533 // Another approach alternative would be store a pointer in SYM, which
1534 // would increase the size of the symbol table. Or perhaps we could
1535 // use a hash table from dynamic symbol pointer values to Version_base
1539 Versions::version_index(const Symbol_table* symtab, const Stringpool* dynpool,
1540 const Symbol* sym) const
1542 Stringpool::Key version_key;
1543 const char* version = dynpool->find(sym->version(), &version_key);
1544 gold_assert(version != NULL);
1547 if (!sym->is_from_dynobj() && !sym->is_copied_from_dynobj())
1549 if (!parameters->options().shared())
1550 return elfcpp::VER_NDX_GLOBAL;
1551 k = Key(version_key, 0);
1555 Dynobj* dynobj = this->get_dynobj_for_sym(symtab, sym);
1557 Stringpool::Key filename_key;
1558 const char* filename = dynpool->find(dynobj->soname(), &filename_key);
1559 gold_assert(filename != NULL);
1561 k = Key(version_key, filename_key);
1564 Version_table::const_iterator p = this->version_table_.find(k);
1565 gold_assert(p != this->version_table_.end());
1567 return p->second->index();
1570 // Return an allocated buffer holding the contents of the symbol
1573 template<int size, bool big_endian>
1575 Versions::symbol_section_contents(const Symbol_table* symtab,
1576 const Stringpool* dynpool,
1577 unsigned int local_symcount,
1578 const std::vector<Symbol*>& syms,
1580 unsigned int* psize) const
1582 gold_assert(this->is_finalized_);
1584 unsigned int sz = (local_symcount + syms.size()) * 2;
1585 unsigned char* pbuf = new unsigned char[sz];
1587 for (unsigned int i = 0; i < local_symcount; ++i)
1588 elfcpp::Swap<16, big_endian>::writeval(pbuf + i * 2,
1589 elfcpp::VER_NDX_LOCAL);
1591 for (std::vector<Symbol*>::const_iterator p = syms.begin();
1595 unsigned int version_index;
1596 const char* version = (*p)->version();
1597 if (version == NULL)
1598 version_index = elfcpp::VER_NDX_GLOBAL;
1600 version_index = this->version_index(symtab, dynpool, *p);
1601 // If the symbol was defined as foo@V1 instead of foo@@V1, add
1603 if ((*p)->version() != NULL && !(*p)->is_default())
1604 version_index |= elfcpp::VERSYM_HIDDEN;
1605 elfcpp::Swap<16, big_endian>::writeval(pbuf + (*p)->dynsym_index() * 2,
1613 // Return an allocated buffer holding the contents of the version
1614 // definition section.
1616 template<int size, bool big_endian>
1618 Versions::def_section_contents(const Stringpool* dynpool,
1619 unsigned char** pp, unsigned int* psize,
1620 unsigned int* pentries) const
1622 gold_assert(this->is_finalized_);
1623 gold_assert(!this->defs_.empty());
1625 const int verdef_size = elfcpp::Elf_sizes<size>::verdef_size;
1626 const int verdaux_size = elfcpp::Elf_sizes<size>::verdaux_size;
1628 unsigned int sz = 0;
1629 for (Defs::const_iterator p = this->defs_.begin();
1630 p != this->defs_.end();
1633 sz += verdef_size + verdaux_size;
1634 sz += (*p)->count_dependencies() * verdaux_size;
1637 unsigned char* pbuf = new unsigned char[sz];
1639 unsigned char* pb = pbuf;
1640 Defs::const_iterator p;
1642 for (p = this->defs_.begin(), i = 0;
1643 p != this->defs_.end();
1645 pb = (*p)->write<size, big_endian>(dynpool,
1646 i + 1 >= this->defs_.size(),
1649 gold_assert(static_cast<unsigned int>(pb - pbuf) == sz);
1653 *pentries = this->defs_.size();
1656 // Return an allocated buffer holding the contents of the version
1657 // reference section.
1659 template<int size, bool big_endian>
1661 Versions::need_section_contents(const Stringpool* dynpool,
1662 unsigned char** pp, unsigned int *psize,
1663 unsigned int *pentries) const
1665 gold_assert(this->is_finalized_);
1666 gold_assert(!this->needs_.empty());
1668 const int verneed_size = elfcpp::Elf_sizes<size>::verneed_size;
1669 const int vernaux_size = elfcpp::Elf_sizes<size>::vernaux_size;
1671 unsigned int sz = 0;
1672 for (Needs::const_iterator p = this->needs_.begin();
1673 p != this->needs_.end();
1677 sz += (*p)->count_versions() * vernaux_size;
1680 unsigned char* pbuf = new unsigned char[sz];
1682 unsigned char* pb = pbuf;
1683 Needs::const_iterator p;
1685 for (p = this->needs_.begin(), i = 0;
1686 p != this->needs_.end();
1688 pb = (*p)->write<size, big_endian>(dynpool,
1689 i + 1 >= this->needs_.size(),
1692 gold_assert(static_cast<unsigned int>(pb - pbuf) == sz);
1696 *pentries = this->needs_.size();
1699 // Instantiate the templates we need. We could use the configure
1700 // script to restrict this to only the ones for implemented targets.
1702 #ifdef HAVE_TARGET_32_LITTLE
1704 class Sized_dynobj<32, false>;
1707 #ifdef HAVE_TARGET_32_BIG
1709 class Sized_dynobj<32, true>;
1712 #ifdef HAVE_TARGET_64_LITTLE
1714 class Sized_dynobj<64, false>;
1717 #ifdef HAVE_TARGET_64_BIG
1719 class Sized_dynobj<64, true>;
1722 #ifdef HAVE_TARGET_32_LITTLE
1725 Versions::symbol_section_contents<32, false>(
1726 const Symbol_table*,
1729 const std::vector<Symbol*>&,
1731 unsigned int*) const;
1734 #ifdef HAVE_TARGET_32_BIG
1737 Versions::symbol_section_contents<32, true>(
1738 const Symbol_table*,
1741 const std::vector<Symbol*>&,
1743 unsigned int*) const;
1746 #ifdef HAVE_TARGET_64_LITTLE
1749 Versions::symbol_section_contents<64, false>(
1750 const Symbol_table*,
1753 const std::vector<Symbol*>&,
1755 unsigned int*) const;
1758 #ifdef HAVE_TARGET_64_BIG
1761 Versions::symbol_section_contents<64, true>(
1762 const Symbol_table*,
1765 const std::vector<Symbol*>&,
1767 unsigned int*) const;
1770 #ifdef HAVE_TARGET_32_LITTLE
1773 Versions::def_section_contents<32, false>(
1777 unsigned int*) const;
1780 #ifdef HAVE_TARGET_32_BIG
1783 Versions::def_section_contents<32, true>(
1787 unsigned int*) const;
1790 #ifdef HAVE_TARGET_64_LITTLE
1793 Versions::def_section_contents<64, false>(
1797 unsigned int*) const;
1800 #ifdef HAVE_TARGET_64_BIG
1803 Versions::def_section_contents<64, true>(
1807 unsigned int*) const;
1810 #ifdef HAVE_TARGET_32_LITTLE
1813 Versions::need_section_contents<32, false>(
1817 unsigned int*) const;
1820 #ifdef HAVE_TARGET_32_BIG
1823 Versions::need_section_contents<32, true>(
1827 unsigned int*) const;
1830 #ifdef HAVE_TARGET_64_LITTLE
1833 Versions::need_section_contents<64, false>(
1837 unsigned int*) const;
1840 #ifdef HAVE_TARGET_64_BIG
1843 Versions::need_section_contents<64, true>(
1847 unsigned int*) const;
1850 } // End namespace gold.