1 // symtab.cc -- the gold symbol table
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.
34 #include "dwarf_reader.h"
38 #include "workqueue.h"
46 // Initialize fields in Symbol. This initializes everything except u_
50 Symbol::init_fields(const char* name
, const char* version
,
51 elfcpp::STT type
, elfcpp::STB binding
,
52 elfcpp::STV visibility
, unsigned char nonvis
)
55 this->version_
= version
;
56 this->symtab_index_
= 0;
57 this->dynsym_index_
= 0;
58 this->got_offsets_
.init();
59 this->plt_offset_
= 0;
61 this->binding_
= binding
;
62 this->visibility_
= visibility
;
63 this->nonvis_
= nonvis
;
64 this->is_target_special_
= false;
65 this->is_def_
= false;
66 this->is_forwarder_
= false;
67 this->has_alias_
= false;
68 this->needs_dynsym_entry_
= false;
69 this->in_reg_
= false;
70 this->in_dyn_
= false;
71 this->has_plt_offset_
= false;
72 this->has_warning_
= false;
73 this->is_copied_from_dynobj_
= false;
74 this->is_forced_local_
= false;
75 this->is_ordinary_shndx_
= false;
78 // Return the demangled version of the symbol's name, but only
79 // if the --demangle flag was set.
82 demangle(const char* name
)
84 if (!parameters
->options().do_demangle())
87 // cplus_demangle allocates memory for the result it returns,
88 // and returns NULL if the name is already demangled.
89 char* demangled_name
= cplus_demangle(name
, DMGL_ANSI
| DMGL_PARAMS
);
90 if (demangled_name
== NULL
)
93 std::string
retval(demangled_name
);
99 Symbol::demangled_name() const
101 return demangle(this->name());
104 // Initialize the fields in the base class Symbol for SYM in OBJECT.
106 template<int size
, bool big_endian
>
108 Symbol::init_base(const char* name
, const char* version
, Object
* object
,
109 const elfcpp::Sym
<size
, big_endian
>& sym
,
110 unsigned int st_shndx
, bool is_ordinary
)
112 this->init_fields(name
, version
, sym
.get_st_type(), sym
.get_st_bind(),
113 sym
.get_st_visibility(), sym
.get_st_nonvis());
114 this->u_
.from_object
.object
= object
;
115 this->u_
.from_object
.shndx
= st_shndx
;
116 this->is_ordinary_shndx_
= is_ordinary
;
117 this->source_
= FROM_OBJECT
;
118 this->in_reg_
= !object
->is_dynamic();
119 this->in_dyn_
= object
->is_dynamic();
122 // Initialize the fields in the base class Symbol for a symbol defined
123 // in an Output_data.
126 Symbol::init_base(const char* name
, Output_data
* od
, elfcpp::STT type
,
127 elfcpp::STB binding
, elfcpp::STV visibility
,
128 unsigned char nonvis
, bool offset_is_from_end
)
130 this->init_fields(name
, NULL
, type
, binding
, visibility
, nonvis
);
131 this->u_
.in_output_data
.output_data
= od
;
132 this->u_
.in_output_data
.offset_is_from_end
= offset_is_from_end
;
133 this->source_
= IN_OUTPUT_DATA
;
134 this->in_reg_
= true;
137 // Initialize the fields in the base class Symbol for a symbol defined
138 // in an Output_segment.
141 Symbol::init_base(const char* name
, Output_segment
* os
, elfcpp::STT type
,
142 elfcpp::STB binding
, elfcpp::STV visibility
,
143 unsigned char nonvis
, Segment_offset_base offset_base
)
145 this->init_fields(name
, NULL
, type
, binding
, visibility
, nonvis
);
146 this->u_
.in_output_segment
.output_segment
= os
;
147 this->u_
.in_output_segment
.offset_base
= offset_base
;
148 this->source_
= IN_OUTPUT_SEGMENT
;
149 this->in_reg_
= true;
152 // Initialize the fields in the base class Symbol for a symbol defined
156 Symbol::init_base(const char* name
, elfcpp::STT type
,
157 elfcpp::STB binding
, elfcpp::STV visibility
,
158 unsigned char nonvis
)
160 this->init_fields(name
, NULL
, type
, binding
, visibility
, nonvis
);
161 this->source_
= CONSTANT
;
162 this->in_reg_
= true;
165 // Allocate a common symbol in the base.
168 Symbol::allocate_base_common(Output_data
* od
)
170 gold_assert(this->is_common());
171 this->source_
= IN_OUTPUT_DATA
;
172 this->u_
.in_output_data
.output_data
= od
;
173 this->u_
.in_output_data
.offset_is_from_end
= false;
176 // Initialize the fields in Sized_symbol for SYM in OBJECT.
179 template<bool big_endian
>
181 Sized_symbol
<size
>::init(const char* name
, const char* version
, Object
* object
,
182 const elfcpp::Sym
<size
, big_endian
>& sym
,
183 unsigned int st_shndx
, bool is_ordinary
)
185 this->init_base(name
, version
, object
, sym
, st_shndx
, is_ordinary
);
186 this->value_
= sym
.get_st_value();
187 this->symsize_
= sym
.get_st_size();
190 // Initialize the fields in Sized_symbol for a symbol defined in an
195 Sized_symbol
<size
>::init(const char* name
, Output_data
* od
,
196 Value_type value
, Size_type symsize
,
197 elfcpp::STT type
, elfcpp::STB binding
,
198 elfcpp::STV visibility
, unsigned char nonvis
,
199 bool offset_is_from_end
)
201 this->init_base(name
, od
, type
, binding
, visibility
, nonvis
,
203 this->value_
= value
;
204 this->symsize_
= symsize
;
207 // Initialize the fields in Sized_symbol for a symbol defined in an
212 Sized_symbol
<size
>::init(const char* name
, Output_segment
* os
,
213 Value_type value
, Size_type symsize
,
214 elfcpp::STT type
, elfcpp::STB binding
,
215 elfcpp::STV visibility
, unsigned char nonvis
,
216 Segment_offset_base offset_base
)
218 this->init_base(name
, os
, type
, binding
, visibility
, nonvis
, offset_base
);
219 this->value_
= value
;
220 this->symsize_
= symsize
;
223 // Initialize the fields in Sized_symbol for a symbol defined as a
228 Sized_symbol
<size
>::init(const char* name
, Value_type value
, Size_type symsize
,
229 elfcpp::STT type
, elfcpp::STB binding
,
230 elfcpp::STV visibility
, unsigned char nonvis
)
232 this->init_base(name
, type
, binding
, visibility
, nonvis
);
233 this->value_
= value
;
234 this->symsize_
= symsize
;
237 // Allocate a common symbol.
241 Sized_symbol
<size
>::allocate_common(Output_data
* od
, Value_type value
)
243 this->allocate_base_common(od
);
244 this->value_
= value
;
247 // Return true if this symbol should be added to the dynamic symbol
251 Symbol::should_add_dynsym_entry() const
253 // If the symbol is used by a dynamic relocation, we need to add it.
254 if (this->needs_dynsym_entry())
257 // If the symbol was forced local in a version script, do not add it.
258 if (this->is_forced_local())
261 // If exporting all symbols or building a shared library,
262 // and the symbol is defined in a regular object and is
263 // externally visible, we need to add it.
264 if ((parameters
->options().export_dynamic() || parameters
->options().shared())
265 && !this->is_from_dynobj()
266 && this->is_externally_visible())
272 // Return true if the final value of this symbol is known at link
276 Symbol::final_value_is_known() const
278 // If we are not generating an executable, then no final values are
279 // known, since they will change at runtime.
280 if (parameters
->options().shared() || parameters
->options().relocatable())
283 // If the symbol is not from an object file, then it is defined, and
285 if (this->source_
!= FROM_OBJECT
)
288 // If the symbol is from a dynamic object, then the final value is
290 if (this->object()->is_dynamic())
293 // If the symbol is not undefined (it is defined or common), then
294 // the final value is known.
295 if (!this->is_undefined())
298 // If the symbol is undefined, then whether the final value is known
299 // depends on whether we are doing a static link. If we are doing a
300 // dynamic link, then the final value could be filled in at runtime.
301 // This could reasonably be the case for a weak undefined symbol.
302 return parameters
->doing_static_link();
305 // Return the output section where this symbol is defined.
308 Symbol::output_section() const
310 switch (this->source_
)
314 unsigned int shndx
= this->u_
.from_object
.shndx
;
315 if (shndx
!= elfcpp::SHN_UNDEF
&& this->is_ordinary_shndx_
)
317 gold_assert(!this->u_
.from_object
.object
->is_dynamic());
318 Relobj
* relobj
= static_cast<Relobj
*>(this->u_
.from_object
.object
);
319 section_offset_type dummy
;
320 return relobj
->output_section(shndx
, &dummy
);
326 return this->u_
.in_output_data
.output_data
->output_section();
328 case IN_OUTPUT_SEGMENT
:
337 // Set the symbol's output section. This is used for symbols defined
338 // in scripts. This should only be called after the symbol table has
342 Symbol::set_output_section(Output_section
* os
)
344 switch (this->source_
)
348 gold_assert(this->output_section() == os
);
351 this->source_
= IN_OUTPUT_DATA
;
352 this->u_
.in_output_data
.output_data
= os
;
353 this->u_
.in_output_data
.offset_is_from_end
= false;
355 case IN_OUTPUT_SEGMENT
:
361 // Class Symbol_table.
363 Symbol_table::Symbol_table(unsigned int count
,
364 const Version_script_info
& version_script
)
365 : saw_undefined_(0), offset_(0), table_(count
), namepool_(),
366 forwarders_(), commons_(), tls_commons_(), forced_locals_(), warnings_(),
367 version_script_(version_script
)
369 namepool_
.reserve(count
);
372 Symbol_table::~Symbol_table()
376 // The hash function. The key values are Stringpool keys.
379 Symbol_table::Symbol_table_hash::operator()(const Symbol_table_key
& key
) const
381 return key
.first
^ key
.second
;
384 // The symbol table key equality function. This is called with
388 Symbol_table::Symbol_table_eq::operator()(const Symbol_table_key
& k1
,
389 const Symbol_table_key
& k2
) const
391 return k1
.first
== k2
.first
&& k1
.second
== k2
.second
;
394 // Make TO a symbol which forwards to FROM.
397 Symbol_table::make_forwarder(Symbol
* from
, Symbol
* to
)
399 gold_assert(from
!= to
);
400 gold_assert(!from
->is_forwarder() && !to
->is_forwarder());
401 this->forwarders_
[from
] = to
;
402 from
->set_forwarder();
405 // Resolve the forwards from FROM, returning the real symbol.
408 Symbol_table::resolve_forwards(const Symbol
* from
) const
410 gold_assert(from
->is_forwarder());
411 Unordered_map
<const Symbol
*, Symbol
*>::const_iterator p
=
412 this->forwarders_
.find(from
);
413 gold_assert(p
!= this->forwarders_
.end());
417 // Look up a symbol by name.
420 Symbol_table::lookup(const char* name
, const char* version
) const
422 Stringpool::Key name_key
;
423 name
= this->namepool_
.find(name
, &name_key
);
427 Stringpool::Key version_key
= 0;
430 version
= this->namepool_
.find(version
, &version_key
);
435 Symbol_table_key
key(name_key
, version_key
);
436 Symbol_table::Symbol_table_type::const_iterator p
= this->table_
.find(key
);
437 if (p
== this->table_
.end())
442 // Resolve a Symbol with another Symbol. This is only used in the
443 // unusual case where there are references to both an unversioned
444 // symbol and a symbol with a version, and we then discover that that
445 // version is the default version. Because this is unusual, we do
446 // this the slow way, by converting back to an ELF symbol.
448 template<int size
, bool big_endian
>
450 Symbol_table::resolve(Sized_symbol
<size
>* to
, const Sized_symbol
<size
>* from
,
453 unsigned char buf
[elfcpp::Elf_sizes
<size
>::sym_size
];
454 elfcpp::Sym_write
<size
, big_endian
> esym(buf
);
455 // We don't bother to set the st_name or the st_shndx field.
456 esym
.put_st_value(from
->value());
457 esym
.put_st_size(from
->symsize());
458 esym
.put_st_info(from
->binding(), from
->type());
459 esym
.put_st_other(from
->visibility(), from
->nonvis());
461 unsigned int shndx
= from
->shndx(&is_ordinary
);
462 this->resolve(to
, esym
.sym(), shndx
, is_ordinary
, shndx
, from
->object(),
470 // Record that a symbol is forced to be local by a version script.
473 Symbol_table::force_local(Symbol
* sym
)
475 if (!sym
->is_defined() && !sym
->is_common())
477 if (sym
->is_forced_local())
479 // We already got this one.
482 sym
->set_is_forced_local();
483 this->forced_locals_
.push_back(sym
);
486 // Adjust NAME for wrapping, and update *NAME_KEY if necessary. This
487 // is only called for undefined symbols, when at least one --wrap
491 Symbol_table::wrap_symbol(Object
* object
, const char* name
,
492 Stringpool::Key
* name_key
)
494 // For some targets, we need to ignore a specific character when
495 // wrapping, and add it back later.
497 if (name
[0] == object
->target()->wrap_char())
503 if (parameters
->options().is_wrap(name
))
505 // Turn NAME into __wrap_NAME.
512 // This will give us both the old and new name in NAMEPOOL_, but
513 // that is OK. Only the versions we need will wind up in the
514 // real string table in the output file.
515 return this->namepool_
.add(s
.c_str(), true, name_key
);
518 const char* const real_prefix
= "__real_";
519 const size_t real_prefix_length
= strlen(real_prefix
);
520 if (strncmp(name
, real_prefix
, real_prefix_length
) == 0
521 && parameters
->options().is_wrap(name
+ real_prefix_length
))
523 // Turn __real_NAME into NAME.
527 s
+= name
+ real_prefix_length
;
528 return this->namepool_
.add(s
.c_str(), true, name_key
);
534 // Add one symbol from OBJECT to the symbol table. NAME is symbol
535 // name and VERSION is the version; both are canonicalized. DEF is
536 // whether this is the default version. ST_SHNDX is the symbol's
537 // section index; IS_ORDINARY is whether this is a normal section
538 // rather than a special code.
540 // If DEF is true, then this is the definition of a default version of
541 // a symbol. That means that any lookup of NAME/NULL and any lookup
542 // of NAME/VERSION should always return the same symbol. This is
543 // obvious for references, but in particular we want to do this for
544 // definitions: overriding NAME/NULL should also override
545 // NAME/VERSION. If we don't do that, it would be very hard to
546 // override functions in a shared library which uses versioning.
548 // We implement this by simply making both entries in the hash table
549 // point to the same Symbol structure. That is easy enough if this is
550 // the first time we see NAME/NULL or NAME/VERSION, but it is possible
551 // that we have seen both already, in which case they will both have
552 // independent entries in the symbol table. We can't simply change
553 // the symbol table entry, because we have pointers to the entries
554 // attached to the object files. So we mark the entry attached to the
555 // object file as a forwarder, and record it in the forwarders_ map.
556 // Note that entries in the hash table will never be marked as
559 // ORIG_ST_SHNDX and ST_SHNDX are almost always the same.
560 // ORIG_ST_SHNDX is the section index in the input file, or SHN_UNDEF
561 // for a special section code. ST_SHNDX may be modified if the symbol
562 // is defined in a section being discarded.
564 template<int size
, bool big_endian
>
566 Symbol_table::add_from_object(Object
* object
,
568 Stringpool::Key name_key
,
570 Stringpool::Key version_key
,
572 const elfcpp::Sym
<size
, big_endian
>& sym
,
573 unsigned int st_shndx
,
575 unsigned int orig_st_shndx
)
577 // Print a message if this symbol is being traced.
578 if (parameters
->options().is_trace_symbol(name
))
580 if (orig_st_shndx
== elfcpp::SHN_UNDEF
)
581 gold_info(_("%s: reference to %s"), object
->name().c_str(), name
);
583 gold_info(_("%s: definition of %s"), object
->name().c_str(), name
);
586 // For an undefined symbol, we may need to adjust the name using
588 if (orig_st_shndx
== elfcpp::SHN_UNDEF
589 && parameters
->options().any_wrap())
591 const char* wrap_name
= this->wrap_symbol(object
, name
, &name_key
);
592 if (wrap_name
!= name
)
594 // If we see a reference to malloc with version GLIBC_2.0,
595 // and we turn it into a reference to __wrap_malloc, then we
596 // discard the version number. Otherwise the user would be
597 // required to specify the correct version for
605 Symbol
* const snull
= NULL
;
606 std::pair
<typename
Symbol_table_type::iterator
, bool> ins
=
607 this->table_
.insert(std::make_pair(std::make_pair(name_key
, version_key
),
610 std::pair
<typename
Symbol_table_type::iterator
, bool> insdef
=
611 std::make_pair(this->table_
.end(), false);
614 const Stringpool::Key vnull_key
= 0;
615 insdef
= this->table_
.insert(std::make_pair(std::make_pair(name_key
,
620 // ins.first: an iterator, which is a pointer to a pair.
621 // ins.first->first: the key (a pair of name and version).
622 // ins.first->second: the value (Symbol*).
623 // ins.second: true if new entry was inserted, false if not.
625 Sized_symbol
<size
>* ret
;
630 // We already have an entry for NAME/VERSION.
631 ret
= this->get_sized_symbol
<size
>(ins
.first
->second
);
632 gold_assert(ret
!= NULL
);
634 was_undefined
= ret
->is_undefined();
635 was_common
= ret
->is_common();
637 this->resolve(ret
, sym
, st_shndx
, is_ordinary
, orig_st_shndx
, object
,
644 // This is the first time we have seen NAME/NULL. Make
645 // NAME/NULL point to NAME/VERSION.
646 insdef
.first
->second
= ret
;
648 else if (insdef
.first
->second
!= ret
649 && insdef
.first
->second
->is_undefined())
651 // This is the unfortunate case where we already have
652 // entries for both NAME/VERSION and NAME/NULL. Note
653 // that we don't want to combine them if the existing
654 // symbol is going to override the new one. FIXME: We
655 // currently just test is_undefined, but this may not do
656 // the right thing if the existing symbol is from a
657 // shared library and the new one is from a regular
660 const Sized_symbol
<size
>* sym2
;
661 sym2
= this->get_sized_symbol
<size
>(insdef
.first
->second
);
662 Symbol_table::resolve
<size
, big_endian
>(ret
, sym2
, version
);
663 this->make_forwarder(insdef
.first
->second
, ret
);
664 insdef
.first
->second
= ret
;
672 // This is the first time we have seen NAME/VERSION.
673 gold_assert(ins
.first
->second
== NULL
);
675 if (def
&& !insdef
.second
)
677 // We already have an entry for NAME/NULL. If we override
678 // it, then change it to NAME/VERSION.
679 ret
= this->get_sized_symbol
<size
>(insdef
.first
->second
);
681 was_undefined
= ret
->is_undefined();
682 was_common
= ret
->is_common();
684 this->resolve(ret
, sym
, st_shndx
, is_ordinary
, orig_st_shndx
, object
,
686 ins
.first
->second
= ret
;
690 was_undefined
= false;
693 Sized_target
<size
, big_endian
>* target
=
694 object
->sized_target
<size
, big_endian
>();
695 if (!target
->has_make_symbol())
696 ret
= new Sized_symbol
<size
>();
699 ret
= target
->make_symbol();
702 // This means that we don't want a symbol table
705 this->table_
.erase(ins
.first
);
708 this->table_
.erase(insdef
.first
);
709 // Inserting insdef invalidated ins.
710 this->table_
.erase(std::make_pair(name_key
,
717 ret
->init(name
, version
, object
, sym
, st_shndx
, is_ordinary
);
719 ins
.first
->second
= ret
;
722 // This is the first time we have seen NAME/NULL. Point
723 // it at the new entry for NAME/VERSION.
724 gold_assert(insdef
.second
);
725 insdef
.first
->second
= ret
;
730 // Record every time we see a new undefined symbol, to speed up
732 if (!was_undefined
&& ret
->is_undefined())
733 ++this->saw_undefined_
;
735 // Keep track of common symbols, to speed up common symbol
737 if (!was_common
&& ret
->is_common())
739 if (ret
->type() != elfcpp::STT_TLS
)
740 this->commons_
.push_back(ret
);
742 this->tls_commons_
.push_back(ret
);
746 ret
->set_is_default();
750 // Add all the symbols in a relocatable object to the hash table.
752 template<int size
, bool big_endian
>
754 Symbol_table::add_from_relobj(
755 Sized_relobj
<size
, big_endian
>* relobj
,
756 const unsigned char* syms
,
758 size_t symndx_offset
,
759 const char* sym_names
,
760 size_t sym_name_size
,
761 typename Sized_relobj
<size
, big_endian
>::Symbols
* sympointers
)
763 gold_assert(size
== relobj
->target()->get_size());
764 gold_assert(size
== parameters
->target().get_size());
766 const int sym_size
= elfcpp::Elf_sizes
<size
>::sym_size
;
768 const bool just_symbols
= relobj
->just_symbols();
770 const unsigned char* p
= syms
;
771 for (size_t i
= 0; i
< count
; ++i
, p
+= sym_size
)
773 elfcpp::Sym
<size
, big_endian
> sym(p
);
775 unsigned int st_name
= sym
.get_st_name();
776 if (st_name
>= sym_name_size
)
778 relobj
->error(_("bad global symbol name offset %u at %zu"),
783 const char* name
= sym_names
+ st_name
;
786 unsigned int st_shndx
= relobj
->adjust_sym_shndx(i
+ symndx_offset
,
789 unsigned int orig_st_shndx
= st_shndx
;
791 orig_st_shndx
= elfcpp::SHN_UNDEF
;
793 // A symbol defined in a section which we are not including must
794 // be treated as an undefined symbol.
795 if (st_shndx
!= elfcpp::SHN_UNDEF
797 && !relobj
->is_section_included(st_shndx
))
798 st_shndx
= elfcpp::SHN_UNDEF
;
800 // In an object file, an '@' in the name separates the symbol
801 // name from the version name. If there are two '@' characters,
802 // this is the default version.
803 const char* ver
= strchr(name
, '@');
805 // DEF: is the version default? LOCAL: is the symbol forced local?
811 // The symbol name is of the form foo@VERSION or foo@@VERSION
812 namelen
= ver
- name
;
820 // We don't want to assign a version to an undefined symbol,
821 // even if it is listed in the version script. FIXME: What
822 // about a common symbol?
823 else if (!version_script_
.empty()
824 && st_shndx
!= elfcpp::SHN_UNDEF
)
826 // The symbol name did not have a version, but
827 // the version script may assign a version anyway.
828 namelen
= strlen(name
);
830 // Check the global: entries from the version script.
831 const std::string
& version
=
832 version_script_
.get_symbol_version(name
);
833 if (!version
.empty())
834 ver
= version
.c_str();
835 // Check the local: entries from the version script
836 if (version_script_
.symbol_is_local(name
))
840 elfcpp::Sym
<size
, big_endian
>* psym
= &sym
;
841 unsigned char symbuf
[sym_size
];
842 elfcpp::Sym
<size
, big_endian
> sym2(symbuf
);
845 memcpy(symbuf
, p
, sym_size
);
846 elfcpp::Sym_write
<size
, big_endian
> sw(symbuf
);
847 if (orig_st_shndx
!= elfcpp::SHN_UNDEF
&& is_ordinary
)
849 // Symbol values in object files are section relative.
850 // This is normally what we want, but since here we are
851 // converting the symbol to absolute we need to add the
852 // section address. The section address in an object
853 // file is normally zero, but people can use a linker
854 // script to change it.
855 sw
.put_st_value(sym
.get_st_value()
856 + relobj
->section_address(orig_st_shndx
));
858 st_shndx
= elfcpp::SHN_ABS
;
863 Sized_symbol
<size
>* res
;
866 Stringpool::Key name_key
;
867 name
= this->namepool_
.add(name
, true, &name_key
);
868 res
= this->add_from_object(relobj
, name
, name_key
, NULL
, 0,
869 false, *psym
, st_shndx
, is_ordinary
,
872 this->force_local(res
);
876 Stringpool::Key name_key
;
877 name
= this->namepool_
.add_with_length(name
, namelen
, true,
879 Stringpool::Key ver_key
;
880 ver
= this->namepool_
.add(ver
, true, &ver_key
);
882 res
= this->add_from_object(relobj
, name
, name_key
, ver
, ver_key
,
883 def
, *psym
, st_shndx
, is_ordinary
,
887 (*sympointers
)[i
] = res
;
891 // Add all the symbols in a dynamic object to the hash table.
893 template<int size
, bool big_endian
>
895 Symbol_table::add_from_dynobj(
896 Sized_dynobj
<size
, big_endian
>* dynobj
,
897 const unsigned char* syms
,
899 const char* sym_names
,
900 size_t sym_name_size
,
901 const unsigned char* versym
,
903 const std::vector
<const char*>* version_map
)
905 gold_assert(size
== dynobj
->target()->get_size());
906 gold_assert(size
== parameters
->target().get_size());
908 if (dynobj
->just_symbols())
910 gold_error(_("--just-symbols does not make sense with a shared object"));
914 if (versym
!= NULL
&& versym_size
/ 2 < count
)
916 dynobj
->error(_("too few symbol versions"));
920 const int sym_size
= elfcpp::Elf_sizes
<size
>::sym_size
;
922 // We keep a list of all STT_OBJECT symbols, so that we can resolve
923 // weak aliases. This is necessary because if the dynamic object
924 // provides the same variable under two names, one of which is a
925 // weak definition, and the regular object refers to the weak
926 // definition, we have to put both the weak definition and the
927 // strong definition into the dynamic symbol table. Given a weak
928 // definition, the only way that we can find the corresponding
929 // strong definition, if any, is to search the symbol table.
930 std::vector
<Sized_symbol
<size
>*> object_symbols
;
932 const unsigned char* p
= syms
;
933 const unsigned char* vs
= versym
;
934 for (size_t i
= 0; i
< count
; ++i
, p
+= sym_size
, vs
+= 2)
936 elfcpp::Sym
<size
, big_endian
> sym(p
);
938 // Ignore symbols with local binding or that have
939 // internal or hidden visibility.
940 if (sym
.get_st_bind() == elfcpp::STB_LOCAL
941 || sym
.get_st_visibility() == elfcpp::STV_INTERNAL
942 || sym
.get_st_visibility() == elfcpp::STV_HIDDEN
)
945 unsigned int st_name
= sym
.get_st_name();
946 if (st_name
>= sym_name_size
)
948 dynobj
->error(_("bad symbol name offset %u at %zu"),
953 const char* name
= sym_names
+ st_name
;
956 unsigned int st_shndx
= dynobj
->adjust_sym_shndx(i
, sym
.get_st_shndx(),
959 Sized_symbol
<size
>* res
;
963 Stringpool::Key name_key
;
964 name
= this->namepool_
.add(name
, true, &name_key
);
965 res
= this->add_from_object(dynobj
, name
, name_key
, NULL
, 0,
966 false, sym
, st_shndx
, is_ordinary
,
971 // Read the version information.
973 unsigned int v
= elfcpp::Swap
<16, big_endian
>::readval(vs
);
975 bool hidden
= (v
& elfcpp::VERSYM_HIDDEN
) != 0;
976 v
&= elfcpp::VERSYM_VERSION
;
978 // The Sun documentation says that V can be VER_NDX_LOCAL,
979 // or VER_NDX_GLOBAL, or a version index. The meaning of
980 // VER_NDX_LOCAL is defined as "Symbol has local scope."
981 // The old GNU linker will happily generate VER_NDX_LOCAL
982 // for an undefined symbol. I don't know what the Sun
983 // linker will generate.
985 if (v
== static_cast<unsigned int>(elfcpp::VER_NDX_LOCAL
)
986 && st_shndx
!= elfcpp::SHN_UNDEF
)
988 // This symbol should not be visible outside the object.
992 // At this point we are definitely going to add this symbol.
993 Stringpool::Key name_key
;
994 name
= this->namepool_
.add(name
, true, &name_key
);
996 if (v
== static_cast<unsigned int>(elfcpp::VER_NDX_LOCAL
)
997 || v
== static_cast<unsigned int>(elfcpp::VER_NDX_GLOBAL
))
999 // This symbol does not have a version.
1000 res
= this->add_from_object(dynobj
, name
, name_key
, NULL
, 0,
1001 false, sym
, st_shndx
, is_ordinary
,
1006 if (v
>= version_map
->size())
1008 dynobj
->error(_("versym for symbol %zu out of range: %u"),
1013 const char* version
= (*version_map
)[v
];
1014 if (version
== NULL
)
1016 dynobj
->error(_("versym for symbol %zu has no name: %u"),
1021 Stringpool::Key version_key
;
1022 version
= this->namepool_
.add(version
, true, &version_key
);
1024 // If this is an absolute symbol, and the version name
1025 // and symbol name are the same, then this is the
1026 // version definition symbol. These symbols exist to
1027 // support using -u to pull in particular versions. We
1028 // do not want to record a version for them.
1029 if (st_shndx
== elfcpp::SHN_ABS
1031 && name_key
== version_key
)
1032 res
= this->add_from_object(dynobj
, name
, name_key
, NULL
, 0,
1033 false, sym
, st_shndx
, is_ordinary
,
1037 const bool def
= (!hidden
1038 && st_shndx
!= elfcpp::SHN_UNDEF
);
1039 res
= this->add_from_object(dynobj
, name
, name_key
, version
,
1040 version_key
, def
, sym
, st_shndx
,
1041 is_ordinary
, st_shndx
);
1046 // Note that it is possible that RES was overridden by an
1047 // earlier object, in which case it can't be aliased here.
1048 if (st_shndx
!= elfcpp::SHN_UNDEF
1050 && sym
.get_st_type() == elfcpp::STT_OBJECT
1051 && res
->source() == Symbol::FROM_OBJECT
1052 && res
->object() == dynobj
)
1053 object_symbols
.push_back(res
);
1056 this->record_weak_aliases(&object_symbols
);
1059 // This is used to sort weak aliases. We sort them first by section
1060 // index, then by offset, then by weak ahead of strong.
1063 class Weak_alias_sorter
1066 bool operator()(const Sized_symbol
<size
>*, const Sized_symbol
<size
>*) const;
1071 Weak_alias_sorter
<size
>::operator()(const Sized_symbol
<size
>* s1
,
1072 const Sized_symbol
<size
>* s2
) const
1075 unsigned int s1_shndx
= s1
->shndx(&is_ordinary
);
1076 gold_assert(is_ordinary
);
1077 unsigned int s2_shndx
= s2
->shndx(&is_ordinary
);
1078 gold_assert(is_ordinary
);
1079 if (s1_shndx
!= s2_shndx
)
1080 return s1_shndx
< s2_shndx
;
1082 if (s1
->value() != s2
->value())
1083 return s1
->value() < s2
->value();
1084 if (s1
->binding() != s2
->binding())
1086 if (s1
->binding() == elfcpp::STB_WEAK
)
1088 if (s2
->binding() == elfcpp::STB_WEAK
)
1091 return std::string(s1
->name()) < std::string(s2
->name());
1094 // SYMBOLS is a list of object symbols from a dynamic object. Look
1095 // for any weak aliases, and record them so that if we add the weak
1096 // alias to the dynamic symbol table, we also add the corresponding
1101 Symbol_table::record_weak_aliases(std::vector
<Sized_symbol
<size
>*>* symbols
)
1103 // Sort the vector by section index, then by offset, then by weak
1105 std::sort(symbols
->begin(), symbols
->end(), Weak_alias_sorter
<size
>());
1107 // Walk through the vector. For each weak definition, record
1109 for (typename
std::vector
<Sized_symbol
<size
>*>::const_iterator p
=
1111 p
!= symbols
->end();
1114 if ((*p
)->binding() != elfcpp::STB_WEAK
)
1117 // Build a circular list of weak aliases. Each symbol points to
1118 // the next one in the circular list.
1120 Sized_symbol
<size
>* from_sym
= *p
;
1121 typename
std::vector
<Sized_symbol
<size
>*>::const_iterator q
;
1122 for (q
= p
+ 1; q
!= symbols
->end(); ++q
)
1125 if ((*q
)->shndx(&dummy
) != from_sym
->shndx(&dummy
)
1126 || (*q
)->value() != from_sym
->value())
1129 this->weak_aliases_
[from_sym
] = *q
;
1130 from_sym
->set_has_alias();
1136 this->weak_aliases_
[from_sym
] = *p
;
1137 from_sym
->set_has_alias();
1144 // Create and return a specially defined symbol. If ONLY_IF_REF is
1145 // true, then only create the symbol if there is a reference to it.
1146 // If this does not return NULL, it sets *POLDSYM to the existing
1147 // symbol if there is one. This canonicalizes *PNAME and *PVERSION.
1149 template<int size
, bool big_endian
>
1151 Symbol_table::define_special_symbol(const char** pname
, const char** pversion
,
1153 Sized_symbol
<size
>** poldsym
)
1156 Sized_symbol
<size
>* sym
;
1157 bool add_to_table
= false;
1158 typename
Symbol_table_type::iterator add_loc
= this->table_
.end();
1160 // If the caller didn't give us a version, see if we get one from
1161 // the version script.
1162 if (*pversion
== NULL
)
1164 const std::string
& v(this->version_script_
.get_symbol_version(*pname
));
1166 *pversion
= v
.c_str();
1171 oldsym
= this->lookup(*pname
, *pversion
);
1172 if (oldsym
== NULL
|| !oldsym
->is_undefined())
1175 *pname
= oldsym
->name();
1176 *pversion
= oldsym
->version();
1180 // Canonicalize NAME and VERSION.
1181 Stringpool::Key name_key
;
1182 *pname
= this->namepool_
.add(*pname
, true, &name_key
);
1184 Stringpool::Key version_key
= 0;
1185 if (*pversion
!= NULL
)
1186 *pversion
= this->namepool_
.add(*pversion
, true, &version_key
);
1188 Symbol
* const snull
= NULL
;
1189 std::pair
<typename
Symbol_table_type::iterator
, bool> ins
=
1190 this->table_
.insert(std::make_pair(std::make_pair(name_key
,
1196 // We already have a symbol table entry for NAME/VERSION.
1197 oldsym
= ins
.first
->second
;
1198 gold_assert(oldsym
!= NULL
);
1202 // We haven't seen this symbol before.
1203 gold_assert(ins
.first
->second
== NULL
);
1204 add_to_table
= true;
1205 add_loc
= ins
.first
;
1210 const Target
& target
= parameters
->target();
1211 if (!target
.has_make_symbol())
1212 sym
= new Sized_symbol
<size
>();
1215 gold_assert(target
.get_size() == size
);
1216 gold_assert(target
.is_big_endian() ? big_endian
: !big_endian
);
1217 typedef Sized_target
<size
, big_endian
> My_target
;
1218 const My_target
* sized_target
=
1219 static_cast<const My_target
*>(&target
);
1220 sym
= sized_target
->make_symbol();
1226 add_loc
->second
= sym
;
1228 gold_assert(oldsym
!= NULL
);
1230 *poldsym
= this->get_sized_symbol
<size
>(oldsym
);
1235 // Define a symbol based on an Output_data.
1238 Symbol_table::define_in_output_data(const char* name
,
1239 const char* version
,
1244 elfcpp::STB binding
,
1245 elfcpp::STV visibility
,
1246 unsigned char nonvis
,
1247 bool offset_is_from_end
,
1250 if (parameters
->target().get_size() == 32)
1252 #if defined(HAVE_TARGET_32_LITTLE) || defined(HAVE_TARGET_32_BIG)
1253 return this->do_define_in_output_data
<32>(name
, version
, od
,
1254 value
, symsize
, type
, binding
,
1262 else if (parameters
->target().get_size() == 64)
1264 #if defined(HAVE_TARGET_64_LITTLE) || defined(HAVE_TARGET_64_BIG)
1265 return this->do_define_in_output_data
<64>(name
, version
, od
,
1266 value
, symsize
, type
, binding
,
1278 // Define a symbol in an Output_data, sized version.
1282 Symbol_table::do_define_in_output_data(
1284 const char* version
,
1286 typename
elfcpp::Elf_types
<size
>::Elf_Addr value
,
1287 typename
elfcpp::Elf_types
<size
>::Elf_WXword symsize
,
1289 elfcpp::STB binding
,
1290 elfcpp::STV visibility
,
1291 unsigned char nonvis
,
1292 bool offset_is_from_end
,
1295 Sized_symbol
<size
>* sym
;
1296 Sized_symbol
<size
>* oldsym
;
1298 if (parameters
->target().is_big_endian())
1300 #if defined(HAVE_TARGET_32_BIG) || defined(HAVE_TARGET_64_BIG)
1301 sym
= this->define_special_symbol
<size
, true>(&name
, &version
,
1302 only_if_ref
, &oldsym
);
1309 #if defined(HAVE_TARGET_32_LITTLE) || defined(HAVE_TARGET_64_LITTLE)
1310 sym
= this->define_special_symbol
<size
, false>(&name
, &version
,
1311 only_if_ref
, &oldsym
);
1320 gold_assert(version
== NULL
|| oldsym
!= NULL
);
1321 sym
->init(name
, od
, value
, symsize
, type
, binding
, visibility
, nonvis
,
1322 offset_is_from_end
);
1326 if (binding
== elfcpp::STB_LOCAL
1327 || this->version_script_
.symbol_is_local(name
))
1328 this->force_local(sym
);
1332 if (Symbol_table::should_override_with_special(oldsym
))
1333 this->override_with_special(oldsym
, sym
);
1338 // Define a symbol based on an Output_segment.
1341 Symbol_table::define_in_output_segment(const char* name
,
1342 const char* version
, Output_segment
* os
,
1346 elfcpp::STB binding
,
1347 elfcpp::STV visibility
,
1348 unsigned char nonvis
,
1349 Symbol::Segment_offset_base offset_base
,
1352 if (parameters
->target().get_size() == 32)
1354 #if defined(HAVE_TARGET_32_LITTLE) || defined(HAVE_TARGET_32_BIG)
1355 return this->do_define_in_output_segment
<32>(name
, version
, os
,
1356 value
, symsize
, type
,
1357 binding
, visibility
, nonvis
,
1358 offset_base
, only_if_ref
);
1363 else if (parameters
->target().get_size() == 64)
1365 #if defined(HAVE_TARGET_64_LITTLE) || defined(HAVE_TARGET_64_BIG)
1366 return this->do_define_in_output_segment
<64>(name
, version
, os
,
1367 value
, symsize
, type
,
1368 binding
, visibility
, nonvis
,
1369 offset_base
, only_if_ref
);
1378 // Define a symbol in an Output_segment, sized version.
1382 Symbol_table::do_define_in_output_segment(
1384 const char* version
,
1386 typename
elfcpp::Elf_types
<size
>::Elf_Addr value
,
1387 typename
elfcpp::Elf_types
<size
>::Elf_WXword symsize
,
1389 elfcpp::STB binding
,
1390 elfcpp::STV visibility
,
1391 unsigned char nonvis
,
1392 Symbol::Segment_offset_base offset_base
,
1395 Sized_symbol
<size
>* sym
;
1396 Sized_symbol
<size
>* oldsym
;
1398 if (parameters
->target().is_big_endian())
1400 #if defined(HAVE_TARGET_32_BIG) || defined(HAVE_TARGET_64_BIG)
1401 sym
= this->define_special_symbol
<size
, true>(&name
, &version
,
1402 only_if_ref
, &oldsym
);
1409 #if defined(HAVE_TARGET_32_LITTLE) || defined(HAVE_TARGET_64_LITTLE)
1410 sym
= this->define_special_symbol
<size
, false>(&name
, &version
,
1411 only_if_ref
, &oldsym
);
1420 gold_assert(version
== NULL
|| oldsym
!= NULL
);
1421 sym
->init(name
, os
, value
, symsize
, type
, binding
, visibility
, nonvis
,
1426 if (binding
== elfcpp::STB_LOCAL
1427 || this->version_script_
.symbol_is_local(name
))
1428 this->force_local(sym
);
1432 if (Symbol_table::should_override_with_special(oldsym
))
1433 this->override_with_special(oldsym
, sym
);
1438 // Define a special symbol with a constant value. It is a multiple
1439 // definition error if this symbol is already defined.
1442 Symbol_table::define_as_constant(const char* name
,
1443 const char* version
,
1447 elfcpp::STB binding
,
1448 elfcpp::STV visibility
,
1449 unsigned char nonvis
,
1451 bool force_override
)
1453 if (parameters
->target().get_size() == 32)
1455 #if defined(HAVE_TARGET_32_LITTLE) || defined(HAVE_TARGET_32_BIG)
1456 return this->do_define_as_constant
<32>(name
, version
, value
,
1457 symsize
, type
, binding
,
1458 visibility
, nonvis
, only_if_ref
,
1464 else if (parameters
->target().get_size() == 64)
1466 #if defined(HAVE_TARGET_64_LITTLE) || defined(HAVE_TARGET_64_BIG)
1467 return this->do_define_as_constant
<64>(name
, version
, value
,
1468 symsize
, type
, binding
,
1469 visibility
, nonvis
, only_if_ref
,
1479 // Define a symbol as a constant, sized version.
1483 Symbol_table::do_define_as_constant(
1485 const char* version
,
1486 typename
elfcpp::Elf_types
<size
>::Elf_Addr value
,
1487 typename
elfcpp::Elf_types
<size
>::Elf_WXword symsize
,
1489 elfcpp::STB binding
,
1490 elfcpp::STV visibility
,
1491 unsigned char nonvis
,
1493 bool force_override
)
1495 Sized_symbol
<size
>* sym
;
1496 Sized_symbol
<size
>* oldsym
;
1498 if (parameters
->target().is_big_endian())
1500 #if defined(HAVE_TARGET_32_BIG) || defined(HAVE_TARGET_64_BIG)
1501 sym
= this->define_special_symbol
<size
, true>(&name
, &version
,
1502 only_if_ref
, &oldsym
);
1509 #if defined(HAVE_TARGET_32_LITTLE) || defined(HAVE_TARGET_64_LITTLE)
1510 sym
= this->define_special_symbol
<size
, false>(&name
, &version
,
1511 only_if_ref
, &oldsym
);
1520 gold_assert(version
== NULL
|| version
== name
|| oldsym
!= NULL
);
1521 sym
->init(name
, value
, symsize
, type
, binding
, visibility
, nonvis
);
1525 // Version symbols are absolute symbols with name == version.
1526 // We don't want to force them to be local.
1527 if ((version
== NULL
1530 && (binding
== elfcpp::STB_LOCAL
1531 || this->version_script_
.symbol_is_local(name
)))
1532 this->force_local(sym
);
1536 if (force_override
|| Symbol_table::should_override_with_special(oldsym
))
1537 this->override_with_special(oldsym
, sym
);
1542 // Define a set of symbols in output sections.
1545 Symbol_table::define_symbols(const Layout
* layout
, int count
,
1546 const Define_symbol_in_section
* p
,
1549 for (int i
= 0; i
< count
; ++i
, ++p
)
1551 Output_section
* os
= layout
->find_output_section(p
->output_section
);
1553 this->define_in_output_data(p
->name
, NULL
, os
, p
->value
,
1554 p
->size
, p
->type
, p
->binding
,
1555 p
->visibility
, p
->nonvis
,
1556 p
->offset_is_from_end
,
1557 only_if_ref
|| p
->only_if_ref
);
1559 this->define_as_constant(p
->name
, NULL
, 0, p
->size
, p
->type
,
1560 p
->binding
, p
->visibility
, p
->nonvis
,
1561 only_if_ref
|| p
->only_if_ref
,
1566 // Define a set of symbols in output segments.
1569 Symbol_table::define_symbols(const Layout
* layout
, int count
,
1570 const Define_symbol_in_segment
* p
,
1573 for (int i
= 0; i
< count
; ++i
, ++p
)
1575 Output_segment
* os
= layout
->find_output_segment(p
->segment_type
,
1576 p
->segment_flags_set
,
1577 p
->segment_flags_clear
);
1579 this->define_in_output_segment(p
->name
, NULL
, os
, p
->value
,
1580 p
->size
, p
->type
, p
->binding
,
1581 p
->visibility
, p
->nonvis
,
1583 only_if_ref
|| p
->only_if_ref
);
1585 this->define_as_constant(p
->name
, NULL
, 0, p
->size
, p
->type
,
1586 p
->binding
, p
->visibility
, p
->nonvis
,
1587 only_if_ref
|| p
->only_if_ref
,
1592 // Define CSYM using a COPY reloc. POSD is the Output_data where the
1593 // symbol should be defined--typically a .dyn.bss section. VALUE is
1594 // the offset within POSD.
1598 Symbol_table::define_with_copy_reloc(
1599 Sized_symbol
<size
>* csym
,
1601 typename
elfcpp::Elf_types
<size
>::Elf_Addr value
)
1603 gold_assert(csym
->is_from_dynobj());
1604 gold_assert(!csym
->is_copied_from_dynobj());
1605 Object
* object
= csym
->object();
1606 gold_assert(object
->is_dynamic());
1607 Dynobj
* dynobj
= static_cast<Dynobj
*>(object
);
1609 // Our copied variable has to override any variable in a shared
1611 elfcpp::STB binding
= csym
->binding();
1612 if (binding
== elfcpp::STB_WEAK
)
1613 binding
= elfcpp::STB_GLOBAL
;
1615 this->define_in_output_data(csym
->name(), csym
->version(),
1616 posd
, value
, csym
->symsize(),
1617 csym
->type(), binding
,
1618 csym
->visibility(), csym
->nonvis(),
1621 csym
->set_is_copied_from_dynobj();
1622 csym
->set_needs_dynsym_entry();
1624 this->copied_symbol_dynobjs_
[csym
] = dynobj
;
1626 // We have now defined all aliases, but we have not entered them all
1627 // in the copied_symbol_dynobjs_ map.
1628 if (csym
->has_alias())
1633 sym
= this->weak_aliases_
[sym
];
1636 gold_assert(sym
->output_data() == posd
);
1638 sym
->set_is_copied_from_dynobj();
1639 this->copied_symbol_dynobjs_
[sym
] = dynobj
;
1644 // SYM is defined using a COPY reloc. Return the dynamic object where
1645 // the original definition was found.
1648 Symbol_table::get_copy_source(const Symbol
* sym
) const
1650 gold_assert(sym
->is_copied_from_dynobj());
1651 Copied_symbol_dynobjs::const_iterator p
=
1652 this->copied_symbol_dynobjs_
.find(sym
);
1653 gold_assert(p
!= this->copied_symbol_dynobjs_
.end());
1657 // Set the dynamic symbol indexes. INDEX is the index of the first
1658 // global dynamic symbol. Pointers to the symbols are stored into the
1659 // vector SYMS. The names are added to DYNPOOL. This returns an
1660 // updated dynamic symbol index.
1663 Symbol_table::set_dynsym_indexes(unsigned int index
,
1664 std::vector
<Symbol
*>* syms
,
1665 Stringpool
* dynpool
,
1668 for (Symbol_table_type::iterator p
= this->table_
.begin();
1669 p
!= this->table_
.end();
1672 Symbol
* sym
= p
->second
;
1674 // Note that SYM may already have a dynamic symbol index, since
1675 // some symbols appear more than once in the symbol table, with
1676 // and without a version.
1678 if (!sym
->should_add_dynsym_entry())
1679 sym
->set_dynsym_index(-1U);
1680 else if (!sym
->has_dynsym_index())
1682 sym
->set_dynsym_index(index
);
1684 syms
->push_back(sym
);
1685 dynpool
->add(sym
->name(), false, NULL
);
1687 // Record any version information.
1688 if (sym
->version() != NULL
)
1689 versions
->record_version(this, dynpool
, sym
);
1693 // Finish up the versions. In some cases this may add new dynamic
1695 index
= versions
->finalize(this, index
, syms
);
1700 // Set the final values for all the symbols. The index of the first
1701 // global symbol in the output file is *PLOCAL_SYMCOUNT. Record the
1702 // file offset OFF. Add their names to POOL. Return the new file
1703 // offset. Update *PLOCAL_SYMCOUNT if necessary.
1706 Symbol_table::finalize(off_t off
, off_t dynoff
, size_t dyn_global_index
,
1707 size_t dyncount
, Stringpool
* pool
,
1708 unsigned int *plocal_symcount
)
1712 gold_assert(*plocal_symcount
!= 0);
1713 this->first_global_index_
= *plocal_symcount
;
1715 this->dynamic_offset_
= dynoff
;
1716 this->first_dynamic_global_index_
= dyn_global_index
;
1717 this->dynamic_count_
= dyncount
;
1719 if (parameters
->target().get_size() == 32)
1721 #if defined(HAVE_TARGET_32_BIG) || defined(HAVE_TARGET_32_LITTLE)
1722 ret
= this->sized_finalize
<32>(off
, pool
, plocal_symcount
);
1727 else if (parameters
->target().get_size() == 64)
1729 #if defined(HAVE_TARGET_64_BIG) || defined(HAVE_TARGET_64_LITTLE)
1730 ret
= this->sized_finalize
<64>(off
, pool
, plocal_symcount
);
1738 // Now that we have the final symbol table, we can reliably note
1739 // which symbols should get warnings.
1740 this->warnings_
.note_warnings(this);
1745 // SYM is going into the symbol table at *PINDEX. Add the name to
1746 // POOL, update *PINDEX and *POFF.
1750 Symbol_table::add_to_final_symtab(Symbol
* sym
, Stringpool
* pool
,
1751 unsigned int* pindex
, off_t
* poff
)
1753 sym
->set_symtab_index(*pindex
);
1754 pool
->add(sym
->name(), false, NULL
);
1756 *poff
+= elfcpp::Elf_sizes
<size
>::sym_size
;
1759 // Set the final value for all the symbols. This is called after
1760 // Layout::finalize, so all the output sections have their final
1765 Symbol_table::sized_finalize(off_t off
, Stringpool
* pool
,
1766 unsigned int* plocal_symcount
)
1768 off
= align_address(off
, size
>> 3);
1769 this->offset_
= off
;
1771 unsigned int index
= *plocal_symcount
;
1772 const unsigned int orig_index
= index
;
1774 // First do all the symbols which have been forced to be local, as
1775 // they must appear before all global symbols.
1776 for (Forced_locals::iterator p
= this->forced_locals_
.begin();
1777 p
!= this->forced_locals_
.end();
1781 gold_assert(sym
->is_forced_local());
1782 if (this->sized_finalize_symbol
<size
>(sym
))
1784 this->add_to_final_symtab
<size
>(sym
, pool
, &index
, &off
);
1789 // Now do all the remaining symbols.
1790 for (Symbol_table_type::iterator p
= this->table_
.begin();
1791 p
!= this->table_
.end();
1794 Symbol
* sym
= p
->second
;
1795 if (this->sized_finalize_symbol
<size
>(sym
))
1796 this->add_to_final_symtab
<size
>(sym
, pool
, &index
, &off
);
1799 this->output_count_
= index
- orig_index
;
1804 // Finalize the symbol SYM. This returns true if the symbol should be
1805 // added to the symbol table, false otherwise.
1809 Symbol_table::sized_finalize_symbol(Symbol
* unsized_sym
)
1811 Sized_symbol
<size
>* sym
= static_cast<Sized_symbol
<size
>*>(unsized_sym
);
1813 // The default version of a symbol may appear twice in the symbol
1814 // table. We only need to finalize it once.
1815 if (sym
->has_symtab_index())
1820 gold_assert(!sym
->has_symtab_index());
1821 sym
->set_symtab_index(-1U);
1822 gold_assert(sym
->dynsym_index() == -1U);
1826 typename Sized_symbol
<size
>::Value_type value
;
1828 switch (sym
->source())
1830 case Symbol::FROM_OBJECT
:
1833 unsigned int shndx
= sym
->shndx(&is_ordinary
);
1835 // FIXME: We need some target specific support here.
1837 && shndx
!= elfcpp::SHN_ABS
1838 && shndx
!= elfcpp::SHN_COMMON
)
1840 gold_error(_("%s: unsupported symbol section 0x%x"),
1841 sym
->demangled_name().c_str(), shndx
);
1842 shndx
= elfcpp::SHN_UNDEF
;
1845 Object
* symobj
= sym
->object();
1846 if (symobj
->is_dynamic())
1849 shndx
= elfcpp::SHN_UNDEF
;
1851 else if (shndx
== elfcpp::SHN_UNDEF
)
1853 else if (!is_ordinary
1854 && (shndx
== elfcpp::SHN_ABS
|| shndx
== elfcpp::SHN_COMMON
))
1855 value
= sym
->value();
1858 Relobj
* relobj
= static_cast<Relobj
*>(symobj
);
1859 section_offset_type secoff
;
1860 Output_section
* os
= relobj
->output_section(shndx
, &secoff
);
1864 sym
->set_symtab_index(-1U);
1865 gold_assert(sym
->dynsym_index() == -1U);
1869 if (sym
->type() == elfcpp::STT_TLS
)
1870 value
= sym
->value() + os
->tls_offset() + secoff
;
1872 value
= sym
->value() + os
->address() + secoff
;
1877 case Symbol::IN_OUTPUT_DATA
:
1879 Output_data
* od
= sym
->output_data();
1880 value
= sym
->value();
1881 if (sym
->type() != elfcpp::STT_TLS
)
1882 value
+= od
->address();
1885 Output_section
* os
= od
->output_section();
1886 gold_assert(os
!= NULL
);
1887 value
+= os
->tls_offset() + (od
->address() - os
->address());
1889 if (sym
->offset_is_from_end())
1890 value
+= od
->data_size();
1894 case Symbol::IN_OUTPUT_SEGMENT
:
1896 Output_segment
* os
= sym
->output_segment();
1897 value
= sym
->value();
1898 if (sym
->type() != elfcpp::STT_TLS
)
1899 value
+= os
->vaddr();
1900 switch (sym
->offset_base())
1902 case Symbol::SEGMENT_START
:
1904 case Symbol::SEGMENT_END
:
1905 value
+= os
->memsz();
1907 case Symbol::SEGMENT_BSS
:
1908 value
+= os
->filesz();
1916 case Symbol::CONSTANT
:
1917 value
= sym
->value();
1924 sym
->set_value(value
);
1926 if (parameters
->options().strip_all())
1928 sym
->set_symtab_index(-1U);
1935 // Write out the global symbols.
1938 Symbol_table::write_globals(const Input_objects
* input_objects
,
1939 const Stringpool
* sympool
,
1940 const Stringpool
* dynpool
,
1941 Output_symtab_xindex
* symtab_xindex
,
1942 Output_symtab_xindex
* dynsym_xindex
,
1943 Output_file
* of
) const
1945 switch (parameters
->size_and_endianness())
1947 #ifdef HAVE_TARGET_32_LITTLE
1948 case Parameters::TARGET_32_LITTLE
:
1949 this->sized_write_globals
<32, false>(input_objects
, sympool
,
1950 dynpool
, symtab_xindex
,
1954 #ifdef HAVE_TARGET_32_BIG
1955 case Parameters::TARGET_32_BIG
:
1956 this->sized_write_globals
<32, true>(input_objects
, sympool
,
1957 dynpool
, symtab_xindex
,
1961 #ifdef HAVE_TARGET_64_LITTLE
1962 case Parameters::TARGET_64_LITTLE
:
1963 this->sized_write_globals
<64, false>(input_objects
, sympool
,
1964 dynpool
, symtab_xindex
,
1968 #ifdef HAVE_TARGET_64_BIG
1969 case Parameters::TARGET_64_BIG
:
1970 this->sized_write_globals
<64, true>(input_objects
, sympool
,
1971 dynpool
, symtab_xindex
,
1980 // Write out the global symbols.
1982 template<int size
, bool big_endian
>
1984 Symbol_table::sized_write_globals(const Input_objects
* input_objects
,
1985 const Stringpool
* sympool
,
1986 const Stringpool
* dynpool
,
1987 Output_symtab_xindex
* symtab_xindex
,
1988 Output_symtab_xindex
* dynsym_xindex
,
1989 Output_file
* of
) const
1991 const Target
& target
= parameters
->target();
1993 const int sym_size
= elfcpp::Elf_sizes
<size
>::sym_size
;
1995 const unsigned int output_count
= this->output_count_
;
1996 const section_size_type oview_size
= output_count
* sym_size
;
1997 const unsigned int first_global_index
= this->first_global_index_
;
1998 unsigned char* psyms
;
1999 if (this->offset_
== 0 || output_count
== 0)
2002 psyms
= of
->get_output_view(this->offset_
, oview_size
);
2004 const unsigned int dynamic_count
= this->dynamic_count_
;
2005 const section_size_type dynamic_size
= dynamic_count
* sym_size
;
2006 const unsigned int first_dynamic_global_index
=
2007 this->first_dynamic_global_index_
;
2008 unsigned char* dynamic_view
;
2009 if (this->dynamic_offset_
== 0 || dynamic_count
== 0)
2010 dynamic_view
= NULL
;
2012 dynamic_view
= of
->get_output_view(this->dynamic_offset_
, dynamic_size
);
2014 for (Symbol_table_type::const_iterator p
= this->table_
.begin();
2015 p
!= this->table_
.end();
2018 Sized_symbol
<size
>* sym
= static_cast<Sized_symbol
<size
>*>(p
->second
);
2020 // Possibly warn about unresolved symbols in shared libraries.
2021 this->warn_about_undefined_dynobj_symbol(input_objects
, sym
);
2023 unsigned int sym_index
= sym
->symtab_index();
2024 unsigned int dynsym_index
;
2025 if (dynamic_view
== NULL
)
2028 dynsym_index
= sym
->dynsym_index();
2030 if (sym_index
== -1U && dynsym_index
== -1U)
2032 // This symbol is not included in the output file.
2037 typename
elfcpp::Elf_types
<size
>::Elf_Addr sym_value
= sym
->value();
2038 typename
elfcpp::Elf_types
<size
>::Elf_Addr dynsym_value
= sym_value
;
2039 switch (sym
->source())
2041 case Symbol::FROM_OBJECT
:
2044 unsigned int in_shndx
= sym
->shndx(&is_ordinary
);
2046 // FIXME: We need some target specific support here.
2048 && in_shndx
!= elfcpp::SHN_ABS
2049 && in_shndx
!= elfcpp::SHN_COMMON
)
2051 gold_error(_("%s: unsupported symbol section 0x%x"),
2052 sym
->demangled_name().c_str(), in_shndx
);
2057 Object
* symobj
= sym
->object();
2058 if (symobj
->is_dynamic())
2060 if (sym
->needs_dynsym_value())
2061 dynsym_value
= target
.dynsym_value(sym
);
2062 shndx
= elfcpp::SHN_UNDEF
;
2064 else if (in_shndx
== elfcpp::SHN_UNDEF
2066 && (in_shndx
== elfcpp::SHN_ABS
2067 || in_shndx
== elfcpp::SHN_COMMON
)))
2071 Relobj
* relobj
= static_cast<Relobj
*>(symobj
);
2072 section_offset_type secoff
;
2073 Output_section
* os
= relobj
->output_section(in_shndx
,
2075 gold_assert(os
!= NULL
);
2076 shndx
= os
->out_shndx();
2078 if (shndx
>= elfcpp::SHN_LORESERVE
)
2080 if (sym_index
!= -1U)
2081 symtab_xindex
->add(sym_index
, shndx
);
2082 if (dynsym_index
!= -1U)
2083 dynsym_xindex
->add(dynsym_index
, shndx
);
2084 shndx
= elfcpp::SHN_XINDEX
;
2087 // In object files symbol values are section
2089 if (parameters
->options().relocatable())
2090 sym_value
-= os
->address();
2096 case Symbol::IN_OUTPUT_DATA
:
2097 shndx
= sym
->output_data()->out_shndx();
2098 if (shndx
>= elfcpp::SHN_LORESERVE
)
2100 if (sym_index
!= -1U)
2101 symtab_xindex
->add(sym_index
, shndx
);
2102 if (dynsym_index
!= -1U)
2103 dynsym_xindex
->add(dynsym_index
, shndx
);
2104 shndx
= elfcpp::SHN_XINDEX
;
2108 case Symbol::IN_OUTPUT_SEGMENT
:
2109 shndx
= elfcpp::SHN_ABS
;
2112 case Symbol::CONSTANT
:
2113 shndx
= elfcpp::SHN_ABS
;
2120 if (sym_index
!= -1U)
2122 sym_index
-= first_global_index
;
2123 gold_assert(sym_index
< output_count
);
2124 unsigned char* ps
= psyms
+ (sym_index
* sym_size
);
2125 this->sized_write_symbol
<size
, big_endian
>(sym
, sym_value
, shndx
,
2129 if (dynsym_index
!= -1U)
2131 dynsym_index
-= first_dynamic_global_index
;
2132 gold_assert(dynsym_index
< dynamic_count
);
2133 unsigned char* pd
= dynamic_view
+ (dynsym_index
* sym_size
);
2134 this->sized_write_symbol
<size
, big_endian
>(sym
, dynsym_value
, shndx
,
2139 of
->write_output_view(this->offset_
, oview_size
, psyms
);
2140 if (dynamic_view
!= NULL
)
2141 of
->write_output_view(this->dynamic_offset_
, dynamic_size
, dynamic_view
);
2144 // Write out the symbol SYM, in section SHNDX, to P. POOL is the
2145 // strtab holding the name.
2147 template<int size
, bool big_endian
>
2149 Symbol_table::sized_write_symbol(
2150 Sized_symbol
<size
>* sym
,
2151 typename
elfcpp::Elf_types
<size
>::Elf_Addr value
,
2153 const Stringpool
* pool
,
2154 unsigned char* p
) const
2156 elfcpp::Sym_write
<size
, big_endian
> osym(p
);
2157 osym
.put_st_name(pool
->get_offset(sym
->name()));
2158 osym
.put_st_value(value
);
2159 osym
.put_st_size(sym
->symsize());
2160 // A version script may have overridden the default binding.
2161 if (sym
->is_forced_local())
2162 osym
.put_st_info(elfcpp::elf_st_info(elfcpp::STB_LOCAL
, sym
->type()));
2164 osym
.put_st_info(elfcpp::elf_st_info(sym
->binding(), sym
->type()));
2165 osym
.put_st_other(elfcpp::elf_st_other(sym
->visibility(), sym
->nonvis()));
2166 osym
.put_st_shndx(shndx
);
2169 // Check for unresolved symbols in shared libraries. This is
2170 // controlled by the --allow-shlib-undefined option.
2172 // We only warn about libraries for which we have seen all the
2173 // DT_NEEDED entries. We don't try to track down DT_NEEDED entries
2174 // which were not seen in this link. If we didn't see a DT_NEEDED
2175 // entry, we aren't going to be able to reliably report whether the
2176 // symbol is undefined.
2178 // We also don't warn about libraries found in the system library
2179 // directory (the directory were we find libc.so); we assume that
2180 // those libraries are OK. This heuristic avoids problems in
2181 // GNU/Linux, in which -ldl can have undefined references satisfied by
2185 Symbol_table::warn_about_undefined_dynobj_symbol(
2186 const Input_objects
* input_objects
,
2190 if (sym
->source() == Symbol::FROM_OBJECT
2191 && sym
->object()->is_dynamic()
2192 && sym
->shndx(&dummy
) == elfcpp::SHN_UNDEF
2193 && sym
->binding() != elfcpp::STB_WEAK
2194 && !parameters
->options().allow_shlib_undefined()
2195 && !parameters
->target().is_defined_by_abi(sym
)
2196 && !input_objects
->found_in_system_library_directory(sym
->object()))
2198 // A very ugly cast.
2199 Dynobj
* dynobj
= static_cast<Dynobj
*>(sym
->object());
2200 if (!dynobj
->has_unknown_needed_entries())
2201 gold_error(_("%s: undefined reference to '%s'"),
2202 sym
->object()->name().c_str(),
2203 sym
->demangled_name().c_str());
2207 // Write out a section symbol. Return the update offset.
2210 Symbol_table::write_section_symbol(const Output_section
*os
,
2211 Output_symtab_xindex
* symtab_xindex
,
2215 switch (parameters
->size_and_endianness())
2217 #ifdef HAVE_TARGET_32_LITTLE
2218 case Parameters::TARGET_32_LITTLE
:
2219 this->sized_write_section_symbol
<32, false>(os
, symtab_xindex
, of
,
2223 #ifdef HAVE_TARGET_32_BIG
2224 case Parameters::TARGET_32_BIG
:
2225 this->sized_write_section_symbol
<32, true>(os
, symtab_xindex
, of
,
2229 #ifdef HAVE_TARGET_64_LITTLE
2230 case Parameters::TARGET_64_LITTLE
:
2231 this->sized_write_section_symbol
<64, false>(os
, symtab_xindex
, of
,
2235 #ifdef HAVE_TARGET_64_BIG
2236 case Parameters::TARGET_64_BIG
:
2237 this->sized_write_section_symbol
<64, true>(os
, symtab_xindex
, of
,
2246 // Write out a section symbol, specialized for size and endianness.
2248 template<int size
, bool big_endian
>
2250 Symbol_table::sized_write_section_symbol(const Output_section
* os
,
2251 Output_symtab_xindex
* symtab_xindex
,
2255 const int sym_size
= elfcpp::Elf_sizes
<size
>::sym_size
;
2257 unsigned char* pov
= of
->get_output_view(offset
, sym_size
);
2259 elfcpp::Sym_write
<size
, big_endian
> osym(pov
);
2260 osym
.put_st_name(0);
2261 osym
.put_st_value(os
->address());
2262 osym
.put_st_size(0);
2263 osym
.put_st_info(elfcpp::elf_st_info(elfcpp::STB_LOCAL
,
2264 elfcpp::STT_SECTION
));
2265 osym
.put_st_other(elfcpp::elf_st_other(elfcpp::STV_DEFAULT
, 0));
2267 unsigned int shndx
= os
->out_shndx();
2268 if (shndx
>= elfcpp::SHN_LORESERVE
)
2270 symtab_xindex
->add(os
->symtab_index(), shndx
);
2271 shndx
= elfcpp::SHN_XINDEX
;
2273 osym
.put_st_shndx(shndx
);
2275 of
->write_output_view(offset
, sym_size
, pov
);
2278 // Print statistical information to stderr. This is used for --stats.
2281 Symbol_table::print_stats() const
2283 #if defined(HAVE_TR1_UNORDERED_MAP) || defined(HAVE_EXT_HASH_MAP)
2284 fprintf(stderr
, _("%s: symbol table entries: %zu; buckets: %zu\n"),
2285 program_name
, this->table_
.size(), this->table_
.bucket_count());
2287 fprintf(stderr
, _("%s: symbol table entries: %zu\n"),
2288 program_name
, this->table_
.size());
2290 this->namepool_
.print_stats("symbol table stringpool");
2293 // We check for ODR violations by looking for symbols with the same
2294 // name for which the debugging information reports that they were
2295 // defined in different source locations. When comparing the source
2296 // location, we consider instances with the same base filename and
2297 // line number to be the same. This is because different object
2298 // files/shared libraries can include the same header file using
2299 // different paths, and we don't want to report an ODR violation in
2302 // This struct is used to compare line information, as returned by
2303 // Dwarf_line_info::one_addr2line. It implements a < comparison
2304 // operator used with std::set.
2306 struct Odr_violation_compare
2309 operator()(const std::string
& s1
, const std::string
& s2
) const
2311 std::string::size_type pos1
= s1
.rfind('/');
2312 std::string::size_type pos2
= s2
.rfind('/');
2313 if (pos1
== std::string::npos
2314 || pos2
== std::string::npos
)
2316 return s1
.compare(pos1
, std::string::npos
,
2317 s2
, pos2
, std::string::npos
) < 0;
2321 // Check candidate_odr_violations_ to find symbols with the same name
2322 // but apparently different definitions (different source-file/line-no).
2325 Symbol_table::detect_odr_violations(const Task
* task
,
2326 const char* output_file_name
) const
2328 for (Odr_map::const_iterator it
= candidate_odr_violations_
.begin();
2329 it
!= candidate_odr_violations_
.end();
2332 const char* symbol_name
= it
->first
;
2333 // We use a sorted set so the output is deterministic.
2334 std::set
<std::string
, Odr_violation_compare
> line_nums
;
2336 for (Unordered_set
<Symbol_location
, Symbol_location_hash
>::const_iterator
2337 locs
= it
->second
.begin();
2338 locs
!= it
->second
.end();
2341 // We need to lock the object in order to read it. This
2342 // means that we have to run in a singleton Task. If we
2343 // want to run this in a general Task for better
2344 // performance, we will need one Task for object, plus
2345 // appropriate locking to ensure that we don't conflict with
2346 // other uses of the object. Also note, one_addr2line is not
2347 // currently thread-safe.
2348 Task_lock_obj
<Object
> tl(task
, locs
->object
);
2349 // 16 is the size of the object-cache that one_addr2line should use.
2350 std::string lineno
= Dwarf_line_info::one_addr2line(
2351 locs
->object
, locs
->shndx
, locs
->offset
, 16);
2352 if (!lineno
.empty())
2353 line_nums
.insert(lineno
);
2356 if (line_nums
.size() > 1)
2358 gold_warning(_("while linking %s: symbol '%s' defined in multiple "
2359 "places (possible ODR violation):"),
2360 output_file_name
, demangle(symbol_name
).c_str());
2361 for (std::set
<std::string
>::const_iterator it2
= line_nums
.begin();
2362 it2
!= line_nums
.end();
2364 fprintf(stderr
, " %s\n", it2
->c_str());
2367 // We only call one_addr2line() in this function, so we can clear its cache.
2368 Dwarf_line_info::clear_addr2line_cache();
2371 // Warnings functions.
2373 // Add a new warning.
2376 Warnings::add_warning(Symbol_table
* symtab
, const char* name
, Object
* obj
,
2377 const std::string
& warning
)
2379 name
= symtab
->canonicalize_name(name
);
2380 this->warnings_
[name
].set(obj
, warning
);
2383 // Look through the warnings and mark the symbols for which we should
2384 // warn. This is called during Layout::finalize when we know the
2385 // sources for all the symbols.
2388 Warnings::note_warnings(Symbol_table
* symtab
)
2390 for (Warning_table::iterator p
= this->warnings_
.begin();
2391 p
!= this->warnings_
.end();
2394 Symbol
* sym
= symtab
->lookup(p
->first
, NULL
);
2396 && sym
->source() == Symbol::FROM_OBJECT
2397 && sym
->object() == p
->second
.object
)
2398 sym
->set_has_warning();
2402 // Issue a warning. This is called when we see a relocation against a
2403 // symbol for which has a warning.
2405 template<int size
, bool big_endian
>
2407 Warnings::issue_warning(const Symbol
* sym
,
2408 const Relocate_info
<size
, big_endian
>* relinfo
,
2409 size_t relnum
, off_t reloffset
) const
2411 gold_assert(sym
->has_warning());
2412 Warning_table::const_iterator p
= this->warnings_
.find(sym
->name());
2413 gold_assert(p
!= this->warnings_
.end());
2414 gold_warning_at_location(relinfo
, relnum
, reloffset
,
2415 "%s", p
->second
.text
.c_str());
2418 // Instantiate the templates we need. We could use the configure
2419 // script to restrict this to only the ones needed for implemented
2422 #if defined(HAVE_TARGET_32_LITTLE) || defined(HAVE_TARGET_32_BIG)
2425 Sized_symbol
<32>::allocate_common(Output_data
*, Value_type
);
2428 #if defined(HAVE_TARGET_64_LITTLE) || defined(HAVE_TARGET_64_BIG)
2431 Sized_symbol
<64>::allocate_common(Output_data
*, Value_type
);
2434 #ifdef HAVE_TARGET_32_LITTLE
2437 Symbol_table::add_from_relobj
<32, false>(
2438 Sized_relobj
<32, false>* relobj
,
2439 const unsigned char* syms
,
2441 size_t symndx_offset
,
2442 const char* sym_names
,
2443 size_t sym_name_size
,
2444 Sized_relobj
<32, true>::Symbols
* sympointers
);
2447 #ifdef HAVE_TARGET_32_BIG
2450 Symbol_table::add_from_relobj
<32, true>(
2451 Sized_relobj
<32, true>* relobj
,
2452 const unsigned char* syms
,
2454 size_t symndx_offset
,
2455 const char* sym_names
,
2456 size_t sym_name_size
,
2457 Sized_relobj
<32, false>::Symbols
* sympointers
);
2460 #ifdef HAVE_TARGET_64_LITTLE
2463 Symbol_table::add_from_relobj
<64, false>(
2464 Sized_relobj
<64, false>* relobj
,
2465 const unsigned char* syms
,
2467 size_t symndx_offset
,
2468 const char* sym_names
,
2469 size_t sym_name_size
,
2470 Sized_relobj
<64, true>::Symbols
* sympointers
);
2473 #ifdef HAVE_TARGET_64_BIG
2476 Symbol_table::add_from_relobj
<64, true>(
2477 Sized_relobj
<64, true>* relobj
,
2478 const unsigned char* syms
,
2480 size_t symndx_offset
,
2481 const char* sym_names
,
2482 size_t sym_name_size
,
2483 Sized_relobj
<64, false>::Symbols
* sympointers
);
2486 #ifdef HAVE_TARGET_32_LITTLE
2489 Symbol_table::add_from_dynobj
<32, false>(
2490 Sized_dynobj
<32, false>* dynobj
,
2491 const unsigned char* syms
,
2493 const char* sym_names
,
2494 size_t sym_name_size
,
2495 const unsigned char* versym
,
2497 const std::vector
<const char*>* version_map
);
2500 #ifdef HAVE_TARGET_32_BIG
2503 Symbol_table::add_from_dynobj
<32, true>(
2504 Sized_dynobj
<32, true>* dynobj
,
2505 const unsigned char* syms
,
2507 const char* sym_names
,
2508 size_t sym_name_size
,
2509 const unsigned char* versym
,
2511 const std::vector
<const char*>* version_map
);
2514 #ifdef HAVE_TARGET_64_LITTLE
2517 Symbol_table::add_from_dynobj
<64, false>(
2518 Sized_dynobj
<64, false>* dynobj
,
2519 const unsigned char* syms
,
2521 const char* sym_names
,
2522 size_t sym_name_size
,
2523 const unsigned char* versym
,
2525 const std::vector
<const char*>* version_map
);
2528 #ifdef HAVE_TARGET_64_BIG
2531 Symbol_table::add_from_dynobj
<64, true>(
2532 Sized_dynobj
<64, true>* dynobj
,
2533 const unsigned char* syms
,
2535 const char* sym_names
,
2536 size_t sym_name_size
,
2537 const unsigned char* versym
,
2539 const std::vector
<const char*>* version_map
);
2542 #if defined(HAVE_TARGET_32_LITTLE) || defined(HAVE_TARGET_32_BIG)
2545 Symbol_table::define_with_copy_reloc
<32>(
2546 Sized_symbol
<32>* sym
,
2548 elfcpp::Elf_types
<32>::Elf_Addr value
);
2551 #if defined(HAVE_TARGET_64_LITTLE) || defined(HAVE_TARGET_64_BIG)
2554 Symbol_table::define_with_copy_reloc
<64>(
2555 Sized_symbol
<64>* sym
,
2557 elfcpp::Elf_types
<64>::Elf_Addr value
);
2560 #ifdef HAVE_TARGET_32_LITTLE
2563 Warnings::issue_warning
<32, false>(const Symbol
* sym
,
2564 const Relocate_info
<32, false>* relinfo
,
2565 size_t relnum
, off_t reloffset
) const;
2568 #ifdef HAVE_TARGET_32_BIG
2571 Warnings::issue_warning
<32, true>(const Symbol
* sym
,
2572 const Relocate_info
<32, true>* relinfo
,
2573 size_t relnum
, off_t reloffset
) const;
2576 #ifdef HAVE_TARGET_64_LITTLE
2579 Warnings::issue_warning
<64, false>(const Symbol
* sym
,
2580 const Relocate_info
<64, false>* relinfo
,
2581 size_t relnum
, off_t reloffset
) const;
2584 #ifdef HAVE_TARGET_64_BIG
2587 Warnings::issue_warning
<64, true>(const Symbol
* sym
,
2588 const Relocate_info
<64, true>* relinfo
,
2589 size_t relnum
, off_t reloffset
) const;
2592 } // End namespace gold.