// object.cc -- support for an object file for linking in gold
-// Copyright 2006, 2007 Free Software Foundation, Inc.
+// Copyright 2006, 2007, 2008 Free Software Foundation, Inc.
// Written by Ian Lance Taylor <iant@google.com>.
// This file is part of gold.
#include <cerrno>
#include <cstring>
#include <cstdarg>
+#include "demangle.h"
#include "libiberty.h"
#include "target-select.h"
#include "layout.h"
#include "output.h"
#include "symtab.h"
+#include "cref.h"
#include "reloc.h"
#include "object.h"
#include "dynobj.h"
namespace gold
{
+// Class Xindex.
+
+// Initialize the symtab_xindex_ array. Find the SHT_SYMTAB_SHNDX
+// section and read it in. SYMTAB_SHNDX is the index of the symbol
+// table we care about.
+
+template<int size, bool big_endian>
+void
+Xindex::initialize_symtab_xindex(Object* object, unsigned int symtab_shndx)
+{
+ if (!this->symtab_xindex_.empty())
+ return;
+
+ gold_assert(symtab_shndx != 0);
+
+ // Look through the sections in reverse order, on the theory that it
+ // is more likely to be near the end than the beginning.
+ unsigned int i = object->shnum();
+ while (i > 0)
+ {
+ --i;
+ if (object->section_type(i) == elfcpp::SHT_SYMTAB_SHNDX
+ && this->adjust_shndx(object->section_link(i)) == symtab_shndx)
+ {
+ this->read_symtab_xindex<size, big_endian>(object, i, NULL);
+ return;
+ }
+ }
+
+ object->error(_("missing SHT_SYMTAB_SHNDX section"));
+}
+
+// Read in the symtab_xindex_ array, given the section index of the
+// SHT_SYMTAB_SHNDX section. If PSHDRS is not NULL, it points at the
+// section headers.
+
+template<int size, bool big_endian>
+void
+Xindex::read_symtab_xindex(Object* object, unsigned int xindex_shndx,
+ const unsigned char* pshdrs)
+{
+ section_size_type bytecount;
+ const unsigned char* contents;
+ if (pshdrs == NULL)
+ contents = object->section_contents(xindex_shndx, &bytecount, false);
+ else
+ {
+ const unsigned char* p = (pshdrs
+ + (xindex_shndx
+ * elfcpp::Elf_sizes<size>::shdr_size));
+ typename elfcpp::Shdr<size, big_endian> shdr(p);
+ bytecount = convert_to_section_size_type(shdr.get_sh_size());
+ contents = object->get_view(shdr.get_sh_offset(), bytecount, true, false);
+ }
+
+ gold_assert(this->symtab_xindex_.empty());
+ this->symtab_xindex_.reserve(bytecount / 4);
+ for (section_size_type i = 0; i < bytecount; i += 4)
+ {
+ unsigned int shndx = elfcpp::Swap<32, big_endian>::readval(contents + i);
+ // We preadjust the section indexes we save.
+ this->symtab_xindex_.push_back(this->adjust_shndx(shndx));
+ }
+}
+
+// Symbol symndx has a section of SHN_XINDEX; return the real section
+// index.
+
+unsigned int
+Xindex::sym_xindex_to_shndx(Object* object, unsigned int symndx)
+{
+ if (symndx >= this->symtab_xindex_.size())
+ {
+ object->error(_("symbol %u out of range for SHT_SYMTAB_SHNDX section"),
+ symndx);
+ return elfcpp::SHN_UNDEF;
+ }
+ unsigned int shndx = this->symtab_xindex_[symndx];
+ if (shndx < elfcpp::SHN_LORESERVE || shndx >= object->shnum())
+ {
+ object->error(_("extended index for symbol %u out of range: %u"),
+ symndx, shndx);
+ return elfcpp::SHN_UNDEF;
+ }
+ return shndx;
+}
+
// Class Object.
// Set the target based on fields in the ELF file header.
// Return a view of the contents of a section.
const unsigned char*
-Object::section_contents(unsigned int shndx, off_t* plen, bool cache)
+Object::section_contents(unsigned int shndx, section_size_type* plen,
+ bool cache)
{
Location loc(this->do_section_contents(shndx));
- *plen = loc.data_size;
- return this->get_view(loc.file_offset, loc.data_size, cache);
+ *plen = convert_to_section_size_type(loc.data_size);
+ return this->get_view(loc.file_offset, *plen, true, cache);
}
// Read the section data into SD. This is code common to Sized_relobj
// Read the section headers.
const off_t shoff = elf_file->shoff();
const unsigned int shnum = this->shnum();
- sd->section_headers = this->get_lasting_view(shoff, shnum * shdr_size, true);
+ sd->section_headers = this->get_lasting_view(shoff, shnum * shdr_size,
+ true, true);
// Read the section names.
const unsigned char* pshdrs = sd->section_headers->data();
this->error(_("section name section has wrong type: %u"),
static_cast<unsigned int>(shdrnames.get_sh_type()));
- sd->section_names_size = shdrnames.get_sh_size();
+ sd->section_names_size =
+ convert_to_section_size_type(shdrnames.get_sh_size());
sd->section_names = this->get_lasting_view(shdrnames.get_sh_offset(),
- sd->section_names_size, false);
+ sd->section_names_size, false,
+ false);
}
// If NAME is the name of a special .gnu.warning section, arrange for
const int warn_prefix_len = sizeof warn_prefix - 1;
if (strncmp(name, warn_prefix, warn_prefix_len) == 0)
{
- symtab->add_warning(name + warn_prefix_len, this, shndx);
+ // Read the section contents to get the warning text. It would
+ // be nicer if we only did this if we have to actually issue a
+ // warning. Unfortunately, warnings are issued as we relocate
+ // sections. That means that we can not lock the object then,
+ // as we might try to issue the same warning multiple times
+ // simultaneously.
+ section_size_type len;
+ const unsigned char* contents = this->section_contents(shndx, &len,
+ false);
+ std::string warning(reinterpret_cast<const char*>(contents), len);
+ symtab->add_warning(name + warn_prefix_len, this, warning);
return true;
}
return false;
symtab_shndx_(-1U),
local_symbol_count_(0),
output_local_symbol_count_(0),
+ output_local_dynsym_count_(0),
symbols_(),
+ defined_count_(0),
local_symbol_offset_(0),
+ local_dynsym_offset_(0),
local_values_(),
local_got_offsets_(),
+ kept_comdat_sections_(),
+ comdat_groups_(),
has_eh_frame_(false)
{
}
// to put the symbol table at the end.
const unsigned char* p = pshdrs + shnum * This::shdr_size;
unsigned int i = shnum;
+ unsigned int xindex_shndx = 0;
+ unsigned int xindex_link = 0;
while (i > 0)
{
--i;
if (shdr.get_sh_type() == elfcpp::SHT_SYMTAB)
{
this->symtab_shndx_ = i;
+ if (xindex_shndx > 0 && xindex_link == i)
+ {
+ Xindex* xindex =
+ new Xindex(this->elf_file_.large_shndx_offset());
+ xindex->read_symtab_xindex<size, big_endian>(this,
+ xindex_shndx,
+ pshdrs);
+ this->set_xindex(xindex);
+ }
break;
}
+
+ // Try to pick up the SHT_SYMTAB_SHNDX section, if there is
+ // one. This will work if it follows the SHT_SYMTAB
+ // section.
+ if (shdr.get_sh_type() == elfcpp::SHT_SYMTAB_SHNDX)
+ {
+ xindex_shndx = i;
+ xindex_link = this->adjust_shndx(shdr.get_sh_link());
+ }
}
}
}
+// Return the Xindex structure to use for object with lots of
+// sections.
+
+template<int size, bool big_endian>
+Xindex*
+Sized_relobj<size, big_endian>::do_initialize_xindex()
+{
+ gold_assert(this->symtab_shndx_ != -1U);
+ Xindex* xindex = new Xindex(this->elf_file_.large_shndx_offset());
+ xindex->initialize_symtab_xindex<size, big_endian>(this, this->symtab_shndx_);
+ return xindex;
+}
+
// Return whether SHDR has the right type and flags to be a GNU
// .eh_frame section.
Sized_relobj<size, big_endian>::check_eh_frame_flags(
const elfcpp::Shdr<size, big_endian>* shdr) const
{
- return (shdr->get_sh_size() > 0
- && shdr->get_sh_type() == elfcpp::SHT_PROGBITS
- && shdr->get_sh_flags() == elfcpp::SHF_ALLOC);
+ return (shdr->get_sh_type() == elfcpp::SHT_PROGBITS
+ && (shdr->get_sh_flags() & elfcpp::SHF_ALLOC) != 0);
}
// Return whether there is a GNU .eh_frame section, given the section
template<int size, bool big_endian>
bool
-Sized_relobj<size, big_endian>::find_eh_frame(const unsigned char* pshdrs,
- const char* names,
- off_t names_size) const
+Sized_relobj<size, big_endian>::find_eh_frame(
+ const unsigned char* pshdrs,
+ const char* names,
+ section_size_type names_size) const
{
const unsigned int shnum = this->shnum();
const unsigned char* p = pshdrs + This::shdr_size;
const unsigned char* namesu = sd->section_names->data();
const char* names = reinterpret_cast<const char*>(namesu);
- if (this->find_eh_frame(pshdrs, names, sd->section_names_size))
- this->has_eh_frame_ = true;
+ if (memmem(names, sd->section_names_size, ".eh_frame", 10) != NULL)
+ {
+ if (this->find_eh_frame(pshdrs, names, sd->section_names_size))
+ this->has_eh_frame_ = true;
+ }
sd->symbols = NULL;
sd->symbols_size = 0;
const int sym_size = This::sym_size;
const unsigned int loccount = symtabshdr.get_sh_info();
this->local_symbol_count_ = loccount;
- off_t locsize = loccount * sym_size;
+ this->local_values_.resize(loccount);
+ section_offset_type locsize = loccount * sym_size;
off_t dataoff = symtabshdr.get_sh_offset();
- off_t datasize = symtabshdr.get_sh_size();
+ section_size_type datasize =
+ convert_to_section_size_type(symtabshdr.get_sh_size());
off_t extoff = dataoff + locsize;
- off_t extsize = datasize - locsize;
+ section_size_type extsize = datasize - locsize;
off_t readoff = this->has_eh_frame_ ? dataoff : extoff;
- off_t readsize = this->has_eh_frame_ ? datasize : extsize;
+ section_size_type readsize = this->has_eh_frame_ ? datasize : extsize;
- File_view* fvsymtab = this->get_lasting_view(readoff, readsize, false);
+ if (readsize == 0)
+ {
+ // No external symbols. Also weird but also legal.
+ return;
+ }
+
+ File_view* fvsymtab = this->get_lasting_view(readoff, readsize, true, false);
// Read the section header for the symbol names.
- unsigned int strtab_shndx = symtabshdr.get_sh_link();
+ unsigned int strtab_shndx = this->adjust_shndx(symtabshdr.get_sh_link());
if (strtab_shndx >= this->shnum())
{
this->error(_("invalid symbol table name index: %u"), strtab_shndx);
// Read the symbol names.
File_view* fvstrtab = this->get_lasting_view(strtabshdr.get_sh_offset(),
- strtabshdr.get_sh_size(), true);
+ strtabshdr.get_sh_size(),
+ false, true);
sd->symbols = fvsymtab;
sd->symbols_size = readsize;
sd->external_symbols_offset = this->has_eh_frame_ ? locsize : 0;
sd->symbol_names = fvstrtab;
- sd->symbol_names_size = strtabshdr.get_sh_size();
+ sd->symbol_names_size =
+ convert_to_section_size_type(strtabshdr.get_sh_size());
}
// Return the section index of symbol SYM. Set *VALUE to its value in
-// the object file. Note that for a symbol which is not defined in
-// this object file, this will set *VALUE to 0 and return SHN_UNDEF;
-// it will not return the final value of the symbol in the link.
+// the object file. Set *IS_ORDINARY if this is an ordinary section
+// index. not a special cod between SHN_LORESERVE and SHN_HIRESERVE.
+// Note that for a symbol which is not defined in this object file,
+// this will set *VALUE to 0 and return SHN_UNDEF; it will not return
+// the final value of the symbol in the link.
template<int size, bool big_endian>
unsigned int
Sized_relobj<size, big_endian>::symbol_section_and_value(unsigned int sym,
- Address* value)
+ Address* value,
+ bool* is_ordinary)
{
- off_t symbols_size;
+ section_size_type symbols_size;
const unsigned char* symbols = this->section_contents(this->symtab_shndx_,
&symbols_size,
false);
elfcpp::Sym<size, big_endian> elfsym(symbols + sym * This::sym_size);
*value = elfsym.get_st_value();
- // FIXME: Handle SHN_XINDEX.
- return elfsym.get_st_shndx();
+
+ return this->adjust_sym_shndx(sym, elfsym.get_st_shndx(), is_ordinary);
}
// Return whether to include a section group in the link. LAYOUT is
template<int size, bool big_endian>
bool
Sized_relobj<size, big_endian>::include_section_group(
+ Symbol_table* symtab,
Layout* layout,
unsigned int index,
- const elfcpp::Shdr<size, big_endian>& shdr,
+ const char* name,
+ const unsigned char* shdrs,
+ const char* section_names,
+ section_size_type section_names_size,
std::vector<bool>* omit)
{
// Read the section contents.
+ typename This::Shdr shdr(shdrs + index * This::shdr_size);
const unsigned char* pcon = this->get_view(shdr.get_sh_offset(),
- shdr.get_sh_size(), false);
+ shdr.get_sh_size(), true, false);
const elfcpp::Elf_Word* pword =
reinterpret_cast<const elfcpp::Elf_Word*>(pcon);
// groups. Other section groups are always included in the link
// just like ordinary sections.
elfcpp::Elf_Word flags = elfcpp::Swap<32, big_endian>::readval(pword);
- if ((flags & elfcpp::GRP_COMDAT) == 0)
- return true;
// Look up the group signature, which is the name of a symbol. This
// is a lot of effort to go to to read a string. Why didn't they
- // just use the name of the SHT_GROUP section as the group
- // signature?
+ // just have the group signature point into the string table, rather
+ // than indirect through a symbol?
// Get the appropriate symbol table header (this will normally be
// the single SHT_SYMTAB section, but in principle it need not be).
- const unsigned int link = shdr.get_sh_link();
+ const unsigned int link = this->adjust_shndx(shdr.get_sh_link());
typename This::Shdr symshdr(this, this->elf_file_.section_header(link));
// Read the symbol table entry.
- if (shdr.get_sh_info() >= symshdr.get_sh_size() / This::sym_size)
+ unsigned int symndx = shdr.get_sh_info();
+ if (symndx >= symshdr.get_sh_size() / This::sym_size)
{
this->error(_("section group %u info %u out of range"),
- index, shdr.get_sh_info());
+ index, symndx);
return false;
}
- off_t symoff = symshdr.get_sh_offset() + shdr.get_sh_info() * This::sym_size;
- const unsigned char* psym = this->get_view(symoff, This::sym_size, true);
+ off_t symoff = symshdr.get_sh_offset() + symndx * This::sym_size;
+ const unsigned char* psym = this->get_view(symoff, This::sym_size, true,
+ false);
elfcpp::Sym<size, big_endian> sym(psym);
// Read the symbol table names.
- off_t symnamelen;
+ section_size_type symnamelen;
const unsigned char* psymnamesu;
- psymnamesu = this->section_contents(symshdr.get_sh_link(), &symnamelen,
- true);
+ psymnamesu = this->section_contents(this->adjust_shndx(symshdr.get_sh_link()),
+ &symnamelen, true);
const char* psymnames = reinterpret_cast<const char*>(psymnamesu);
// Get the section group signature.
if (sym.get_st_name() >= symnamelen)
{
this->error(_("symbol %u name offset %u out of range"),
- shdr.get_sh_info(), sym.get_st_name());
+ symndx, sym.get_st_name());
return false;
}
- const char* signature = psymnames + sym.get_st_name();
+ std::string signature(psymnames + sym.get_st_name());
// It seems that some versions of gas will create a section group
// associated with a section symbol, and then fail to give a name to
// the section symbol. In such a case, use the name of the section.
- // FIXME.
- std::string secname;
if (signature[0] == '\0' && sym.get_st_type() == elfcpp::STT_SECTION)
{
- secname = this->section_name(sym.get_st_shndx());
- signature = secname.c_str();
+ bool is_ordinary;
+ unsigned int sym_shndx = this->adjust_sym_shndx(symndx,
+ sym.get_st_shndx(),
+ &is_ordinary);
+ if (!is_ordinary || sym_shndx >= this->shnum())
+ {
+ this->error(_("symbol %u invalid section index %u"),
+ symndx, sym_shndx);
+ return false;
+ }
+ typename This::Shdr member_shdr(shdrs + sym_shndx * This::shdr_size);
+ if (member_shdr.get_sh_name() < section_names_size)
+ signature = section_names + member_shdr.get_sh_name();
}
- // Record this section group, and see whether we've already seen one
- // with the same signature.
- if (layout->add_comdat(signature, true))
- return true;
+ // Record this section group in the layout, and see whether we've already
+ // seen one with the same signature.
+ bool include_group = ((flags & elfcpp::GRP_COMDAT) == 0
+ || layout->add_comdat(this, index, signature, true));
+
+ Sized_relobj<size, big_endian>* kept_object = NULL;
+ Comdat_group* kept_group = NULL;
+
+ if (!include_group)
+ {
+ // This group is being discarded. Find the object and group
+ // that was kept in its place.
+ unsigned int kept_group_index = 0;
+ Relobj* kept_relobj = layout->find_kept_object(signature,
+ &kept_group_index);
+ kept_object = static_cast<Sized_relobj<size, big_endian>*>(kept_relobj);
+ if (kept_object != NULL)
+ kept_group = kept_object->find_comdat_group(kept_group_index);
+ }
+ else if (flags & elfcpp::GRP_COMDAT)
+ {
+ // This group is being kept. Create the table to map section names
+ // to section indexes and add it to the table of groups.
+ kept_group = new Comdat_group();
+ this->add_comdat_group(index, kept_group);
+ }
- // This is a duplicate. We want to discard the sections in this
- // group.
size_t count = shdr.get_sh_size() / sizeof(elfcpp::Elf_Word);
+
+ std::vector<unsigned int> shndxes;
+ bool relocate_group = include_group && parameters->options().relocatable();
+ if (relocate_group)
+ shndxes.reserve(count - 1);
+
for (size_t i = 1; i < count; ++i)
{
elfcpp::Elf_Word secnum =
- elfcpp::Swap<32, big_endian>::readval(pword + i);
+ this->adjust_shndx(elfcpp::Swap<32, big_endian>::readval(pword + i));
+
+ if (relocate_group)
+ shndxes.push_back(secnum);
+
if (secnum >= this->shnum())
{
this->error(_("section %u in section group %u out of range"),
secnum, index);
continue;
}
- (*omit)[secnum] = true;
+
+ // Check for an earlier section number, since we're going to get
+ // it wrong--we may have already decided to include the section.
+ if (secnum < index)
+ this->error(_("invalid section group %u refers to earlier section %u"),
+ index, secnum);
+
+ // Get the name of the member section.
+ typename This::Shdr member_shdr(shdrs + secnum * This::shdr_size);
+ if (member_shdr.get_sh_name() >= section_names_size)
+ {
+ // This is an error, but it will be diagnosed eventually
+ // in do_layout, so we don't need to do anything here but
+ // ignore it.
+ continue;
+ }
+ std::string mname(section_names + member_shdr.get_sh_name());
+
+ if (!include_group)
+ {
+ (*omit)[secnum] = true;
+ if (kept_group != NULL)
+ {
+ // Find the corresponding kept section, and store that info
+ // in the discarded section table.
+ Comdat_group::const_iterator p = kept_group->find(mname);
+ if (p != kept_group->end())
+ {
+ Kept_comdat_section* kept =
+ new Kept_comdat_section(kept_object, p->second);
+ this->set_kept_comdat_section(secnum, kept);
+ }
+ }
+ }
+ else if (flags & elfcpp::GRP_COMDAT)
+ {
+ // Add the section to the kept group table.
+ gold_assert(kept_group != NULL);
+ kept_group->insert(std::make_pair(mname, secnum));
+ }
}
- return false;
+ if (relocate_group)
+ layout->layout_group(symtab, this, index, name, signature.c_str(),
+ shdr, flags, &shndxes);
+
+ return include_group;
}
// Whether to include a linkonce section in the link. NAME is the
bool
Sized_relobj<size, big_endian>::include_linkonce_section(
Layout* layout,
+ unsigned int index,
const char* name,
const elfcpp::Shdr<size, big_endian>&)
{
symname = name + strlen(linkonce_t);
else
symname = strrchr(name, '.') + 1;
- bool include1 = layout->add_comdat(symname, false);
- bool include2 = layout->add_comdat(name, true);
+ std::string sig1(symname);
+ std::string sig2(name);
+ bool include1 = layout->add_comdat(this, index, sig1, false);
+ bool include2 = layout->add_comdat(this, index, sig2, true);
+
+ if (!include2)
+ {
+ // The section is being discarded on the basis of its section
+ // name (i.e., the kept section was also a linkonce section).
+ // In this case, the section index stored with the layout object
+ // is the linkonce section that was kept.
+ unsigned int kept_group_index = 0;
+ Relobj* kept_relobj = layout->find_kept_object(sig2, &kept_group_index);
+ if (kept_relobj != NULL)
+ {
+ Sized_relobj<size, big_endian>* kept_object
+ = static_cast<Sized_relobj<size, big_endian>*>(kept_relobj);
+ Kept_comdat_section* kept =
+ new Kept_comdat_section(kept_object, kept_group_index);
+ this->set_kept_comdat_section(index, kept);
+ }
+ }
+ else if (!include1)
+ {
+ // The section is being discarded on the basis of its symbol
+ // name. This means that the corresponding kept section was
+ // part of a comdat group, and it will be difficult to identify
+ // the specific section within that group that corresponds to
+ // this linkonce section. We'll handle the simple case where
+ // the group has only one member section. Otherwise, it's not
+ // worth the effort.
+ unsigned int kept_group_index = 0;
+ Relobj* kept_relobj = layout->find_kept_object(sig1, &kept_group_index);
+ if (kept_relobj != NULL)
+ {
+ Sized_relobj<size, big_endian>* kept_object =
+ static_cast<Sized_relobj<size, big_endian>*>(kept_relobj);
+ Comdat_group* kept_group =
+ kept_object->find_comdat_group(kept_group_index);
+ if (kept_group != NULL && kept_group->size() == 1)
+ {
+ Comdat_group::const_iterator p = kept_group->begin();
+ gold_assert(p != kept_group->end());
+ Kept_comdat_section* kept =
+ new Kept_comdat_section(kept_object, p->second);
+ this->set_kept_comdat_section(index, kept);
+ }
+ }
+ }
+
return include1 && include2;
}
return;
// Get the section headers.
- const unsigned char* pshdrs = sd->section_headers->data();
+ const unsigned char* shdrs = sd->section_headers->data();
+ const unsigned char* pshdrs;
// Get the section names.
const unsigned char* pnamesu = sd->section_names->data();
std::vector<unsigned int> reloc_shndx(shnum, 0);
std::vector<unsigned int> reloc_type(shnum, elfcpp::SHT_NULL);
// Skip the first, dummy, section.
- pshdrs += This::shdr_size;
+ pshdrs = shdrs + This::shdr_size;
for (unsigned int i = 1; i < shnum; ++i, pshdrs += This::shdr_size)
{
typename This::Shdr shdr(pshdrs);
unsigned int sh_type = shdr.get_sh_type();
if (sh_type == elfcpp::SHT_REL || sh_type == elfcpp::SHT_RELA)
{
- unsigned int target_shndx = shdr.get_sh_info();
+ unsigned int target_shndx = this->adjust_shndx(shdr.get_sh_info());
if (target_shndx == 0 || target_shndx >= shnum)
{
this->error(_("relocation section %u has bad info %u"),
}
}
- std::vector<Map_to_output>& map_sections(this->map_to_output());
- map_sections.resize(shnum);
+ Output_sections& out_sections(this->output_sections());
+ std::vector<Address>& out_section_offsets(this->section_offsets_);
+
+ out_sections.resize(shnum);
+ out_section_offsets.resize(shnum);
+
+ // If we are only linking for symbols, then there is nothing else to
+ // do here.
+ if (this->input_file()->just_symbols())
+ {
+ delete sd->section_headers;
+ sd->section_headers = NULL;
+ delete sd->section_names;
+ sd->section_names = NULL;
+ return;
+ }
// Whether we've seen a .note.GNU-stack section.
bool seen_gnu_stack = false;
// Keep track of which sections to omit.
std::vector<bool> omit(shnum, false);
+ // Keep track of reloc sections when emitting relocations.
+ const bool relocatable = parameters->options().relocatable();
+ const bool emit_relocs = (relocatable
+ || parameters->options().emit_relocs());
+ std::vector<unsigned int> reloc_sections;
+
// Keep track of .eh_frame sections.
std::vector<unsigned int> eh_frame_sections;
// Skip the first, dummy, section.
- pshdrs = sd->section_headers->data() + This::shdr_size;
+ pshdrs = shdrs + This::shdr_size;
for (unsigned int i = 1; i < shnum; ++i, pshdrs += This::shdr_size)
{
typename This::Shdr shdr(pshdrs);
if (this->handle_gnu_warning_section(name, i, symtab))
{
- if (!parameters->output_is_object())
+ if (!relocatable)
omit[i] = true;
}
{
if (shdr.get_sh_type() == elfcpp::SHT_GROUP)
{
- if (!this->include_section_group(layout, i, shdr, &omit))
+ if (!this->include_section_group(symtab, layout, i, name, shdrs,
+ pnames, sd->section_names_size,
+ &omit))
discard = true;
}
else if ((shdr.get_sh_flags() & elfcpp::SHF_GROUP) == 0
&& Layout::is_linkonce(name))
{
- if (!this->include_linkonce_section(layout, name, shdr))
+ if (!this->include_linkonce_section(layout, i, name, shdr))
discard = true;
}
}
if (discard)
{
// Do not include this section in the link.
- map_sections[i].output_section = NULL;
+ out_sections[i] = NULL;
+ out_section_offsets[i] = -1U;
+ continue;
+ }
+
+ // When doing a relocatable link we are going to copy input
+ // reloc sections into the output. We only want to copy the
+ // ones associated with sections which are not being discarded.
+ // However, we don't know that yet for all sections. So save
+ // reloc sections and process them later.
+ if (emit_relocs
+ && (shdr.get_sh_type() == elfcpp::SHT_REL
+ || shdr.get_sh_type() == elfcpp::SHT_RELA))
+ {
+ reloc_sections.push_back(i);
continue;
}
+ if (relocatable && shdr.get_sh_type() == elfcpp::SHT_GROUP)
+ continue;
+
// The .eh_frame section is special. It holds exception frame
// information that we need to read in order to generate the
// exception frame header. We process these after all the other
// sections so that the exception frame reader can reliably
// determine which sections are being discarded, and discard the
// corresponding information.
- if (!parameters->output_is_object()
+ if (!relocatable
&& strcmp(name, ".eh_frame") == 0
&& this->check_eh_frame_flags(&shdr))
{
reloc_shndx[i], reloc_type[i],
&offset);
- map_sections[i].output_section = os;
- map_sections[i].offset = offset;
+ out_sections[i] = os;
+ if (offset == -1)
+ out_section_offsets[i] = -1U;
+ else
+ out_section_offsets[i] = convert_types<Address, off_t>(offset);
// If this section requires special handling, and if there are
// relocs that apply to it, then we must do the special handling
layout->layout_gnu_stack(seen_gnu_stack, gnu_stack_flags);
+ // When doing a relocatable link handle the reloc sections at the
+ // end.
+ if (emit_relocs)
+ this->size_relocatable_relocs();
+ for (std::vector<unsigned int>::const_iterator p = reloc_sections.begin();
+ p != reloc_sections.end();
+ ++p)
+ {
+ unsigned int i = *p;
+ const unsigned char* pshdr;
+ pshdr = sd->section_headers->data() + i * This::shdr_size;
+ typename This::Shdr shdr(pshdr);
+
+ unsigned int data_shndx = this->adjust_shndx(shdr.get_sh_info());
+ if (data_shndx >= shnum)
+ {
+ // We already warned about this above.
+ continue;
+ }
+
+ Output_section* data_section = out_sections[data_shndx];
+ if (data_section == NULL)
+ {
+ out_sections[i] = NULL;
+ out_section_offsets[i] = -1U;
+ continue;
+ }
+
+ Relocatable_relocs* rr = new Relocatable_relocs();
+ this->set_relocatable_relocs(i, rr);
+
+ Output_section* os = layout->layout_reloc(this, i, shdr, data_section,
+ rr);
+ out_sections[i] = os;
+ out_section_offsets[i] = -1U;
+ }
+
// Handle the .eh_frame sections at the end.
for (std::vector<unsigned int>::const_iterator p = eh_frame_sections.begin();
p != eh_frame_sections.end();
reloc_shndx[i],
reloc_type[i],
&offset);
- map_sections[i].output_section = os;
- map_sections[i].offset = offset;
+ out_sections[i] = os;
+ if (offset == -1)
+ out_section_offsets[i] = -1U;
+ else
+ out_section_offsets[i] = convert_types<Address, off_t>(offset);
// If this section requires special handling, and if there are
// relocs that apply to it, then we must do the special handling
const int sym_size = This::sym_size;
size_t symcount = ((sd->symbols_size - sd->external_symbols_offset)
/ sym_size);
- if (static_cast<off_t>(symcount * sym_size)
- != sd->symbols_size - sd->external_symbols_offset)
+ if (symcount * sym_size != sd->symbols_size - sd->external_symbols_offset)
{
this->error(_("size of symbols is not multiple of symbol size"));
return;
reinterpret_cast<const char*>(sd->symbol_names->data());
symtab->add_from_relobj(this,
sd->symbols->data() + sd->external_symbols_offset,
- symcount, sym_names, sd->symbol_names_size,
- &this->symbols_);
+ symcount, this->local_symbol_count_,
+ sym_names, sd->symbol_names_size,
+ &this->symbols_,
+ &this->defined_count_);
delete sd->symbols;
sd->symbols = NULL;
sd->symbol_names = NULL;
}
-// Finalize the local symbols. Here we record the file offset at
-// which they should be output, we add their names to *POOL, and we
-// add their values to THIS->LOCAL_VALUES_. Return the symbol index.
-// This function is always called from the main thread. The actual
-// output of the local symbols will occur in a separate task.
+// First pass over the local symbols. Here we add their names to
+// *POOL and *DYNPOOL, and we store the symbol value in
+// THIS->LOCAL_VALUES_. This function is always called from a
+// singleton thread. This is followed by a call to
+// finalize_local_symbols.
template<int size, bool big_endian>
-unsigned int
-Sized_relobj<size, big_endian>::do_finalize_local_symbols(unsigned int index,
- off_t off,
- Stringpool* pool)
+void
+Sized_relobj<size, big_endian>::do_count_local_symbols(Stringpool* pool,
+ Stringpool* dynpool)
{
gold_assert(this->symtab_shndx_ != -1U);
if (this->symtab_shndx_ == 0)
{
// This object has no symbols. Weird but legal.
- return index;
+ return;
}
- gold_assert(off == static_cast<off_t>(align_address(off, size >> 3)));
-
- this->local_symbol_offset_ = off;
-
// Read the symbol table section header.
const unsigned int symtab_shndx = this->symtab_shndx_;
typename This::Shdr symtabshdr(this,
gold_assert(loccount == symtabshdr.get_sh_info());
off_t locsize = loccount * sym_size;
const unsigned char* psyms = this->get_view(symtabshdr.get_sh_offset(),
- locsize, true);
-
- this->local_values_.resize(loccount);
+ locsize, true, true);
// Read the symbol names.
- const unsigned int strtab_shndx = symtabshdr.get_sh_link();
- off_t strtab_size;
+ const unsigned int strtab_shndx =
+ this->adjust_shndx(symtabshdr.get_sh_link());
+ section_size_type strtab_size;
const unsigned char* pnamesu = this->section_contents(strtab_shndx,
&strtab_size,
true);
// Loop over the local symbols.
- const std::vector<Map_to_output>& mo(this->map_to_output());
+ const Output_sections& out_sections(this->output_sections());
unsigned int shnum = this->shnum();
unsigned int count = 0;
+ unsigned int dyncount = 0;
// Skip the first, dummy, symbol.
psyms += sym_size;
for (unsigned int i = 1; i < loccount; ++i, psyms += sym_size)
Symbol_value<size>& lv(this->local_values_[i]);
- unsigned int shndx = sym.get_st_shndx();
- lv.set_input_shndx(shndx);
+ bool is_ordinary;
+ unsigned int shndx = this->adjust_sym_shndx(i, sym.get_st_shndx(),
+ &is_ordinary);
+ lv.set_input_shndx(shndx, is_ordinary);
if (sym.get_st_type() == elfcpp::STT_SECTION)
lv.set_is_section_symbol();
+ else if (sym.get_st_type() == elfcpp::STT_TLS)
+ lv.set_is_tls_symbol();
+
+ // Save the input symbol value for use in do_finalize_local_symbols().
+ lv.set_input_value(sym.get_st_value());
+
+ // Decide whether this symbol should go into the output file.
+
+ if (shndx < shnum && out_sections[shndx] == NULL)
+ {
+ lv.set_no_output_symtab_entry();
+ gold_assert(!lv.needs_output_dynsym_entry());
+ continue;
+ }
- if (shndx >= elfcpp::SHN_LORESERVE)
+ if (sym.get_st_type() == elfcpp::STT_SECTION)
{
- if (shndx == elfcpp::SHN_ABS)
- lv.set_output_value(sym.get_st_value());
+ lv.set_no_output_symtab_entry();
+ gold_assert(!lv.needs_output_dynsym_entry());
+ continue;
+ }
+
+ if (sym.get_st_name() >= strtab_size)
+ {
+ this->error(_("local symbol %u section name out of range: %u >= %u"),
+ i, sym.get_st_name(),
+ static_cast<unsigned int>(strtab_size));
+ lv.set_no_output_symtab_entry();
+ continue;
+ }
+
+ // Add the symbol to the symbol table string pool.
+ const char* name = pnames + sym.get_st_name();
+ pool->add(name, true, NULL);
+ ++count;
+
+ // If needed, add the symbol to the dynamic symbol table string pool.
+ if (lv.needs_output_dynsym_entry())
+ {
+ dynpool->add(name, true, NULL);
+ ++dyncount;
+ }
+ }
+
+ this->output_local_symbol_count_ = count;
+ this->output_local_dynsym_count_ = dyncount;
+}
+
+// Finalize the local symbols. Here we set the final value in
+// THIS->LOCAL_VALUES_ and set their output symbol table indexes.
+// This function is always called from a singleton thread. The actual
+// output of the local symbols will occur in a separate task.
+
+template<int size, bool big_endian>
+unsigned int
+Sized_relobj<size, big_endian>::do_finalize_local_symbols(unsigned int index,
+ off_t off)
+{
+ gold_assert(off == static_cast<off_t>(align_address(off, size >> 3)));
+
+ const unsigned int loccount = this->local_symbol_count_;
+ this->local_symbol_offset_ = off;
+
+ const Output_sections& out_sections(this->output_sections());
+ const std::vector<Address>& out_offsets(this->section_offsets_);
+ unsigned int shnum = this->shnum();
+
+ for (unsigned int i = 1; i < loccount; ++i)
+ {
+ Symbol_value<size>& lv(this->local_values_[i]);
+
+ bool is_ordinary;
+ unsigned int shndx = lv.input_shndx(&is_ordinary);
+
+ // Set the output symbol value.
+
+ if (!is_ordinary)
+ {
+ if (shndx == elfcpp::SHN_ABS || shndx == elfcpp::SHN_COMMON)
+ lv.set_output_value(lv.input_value());
else
{
- // FIXME: Handle SHN_XINDEX.
this->error(_("unknown section index %u for local symbol %u"),
shndx, i);
lv.set_output_value(0);
shndx = 0;
}
- Output_section* os = mo[shndx].output_section;
+ Output_section* os = out_sections[shndx];
if (os == NULL)
{
- lv.set_output_value(0);
- lv.set_no_output_symtab_entry();
+ // This local symbol belongs to a section we are discarding.
+ // In some cases when applying relocations later, we will
+ // attempt to match it to the corresponding kept section,
+ // so we leave the input value unchanged here.
continue;
}
-
- if (mo[shndx].offset == -1)
- lv.set_input_value(sym.get_st_value());
+ else if (out_offsets[shndx] == -1U)
+ {
+ // This is a SHF_MERGE section or one which otherwise
+ // requires special handling. We get the output address
+ // of the start of the merged section. If this is not a
+ // section symbol, we can then determine the final
+ // value. If it is a section symbol, we can not, as in
+ // that case we have to consider the addend to determine
+ // the value to use in a relocation.
+ if (!lv.is_section_symbol())
+ lv.set_output_value(os->output_address(this, shndx,
+ lv.input_value()));
+ else
+ {
+ section_offset_type start =
+ os->starting_output_address(this, shndx);
+ Merged_symbol_value<size>* msv =
+ new Merged_symbol_value<size>(lv.input_value(), start);
+ lv.set_merged_symbol_value(msv);
+ }
+ }
+ else if (lv.is_tls_symbol())
+ lv.set_output_value(os->tls_offset()
+ + out_offsets[shndx]
+ + lv.input_value());
else
- lv.set_output_value(mo[shndx].output_section->address()
- + mo[shndx].offset
- + sym.get_st_value());
- }
-
- // Decide whether this symbol should go into the output file.
-
- if (sym.get_st_type() == elfcpp::STT_SECTION)
- {
- lv.set_no_output_symtab_entry();
- continue;
+ lv.set_output_value(os->address()
+ + out_offsets[shndx]
+ + lv.input_value());
}
- if (sym.get_st_name() >= strtab_size)
- {
- this->error(_("local symbol %u section name out of range: %u >= %u"),
- i, sym.get_st_name(),
- static_cast<unsigned int>(strtab_size));
- lv.set_no_output_symtab_entry();
- continue;
- }
-
- const char* name = pnames + sym.get_st_name();
- pool->add(name, true, NULL);
- lv.set_output_symtab_index(index);
- ++index;
- ++count;
+ if (lv.needs_output_symtab_entry())
+ {
+ lv.set_output_symtab_index(index);
+ ++index;
+ }
}
-
- this->output_local_symbol_count_ = count;
-
return index;
}
-// Return the value of the local symbol symndx.
+// Set the output dynamic symbol table indexes for the local variables.
+
template<int size, bool big_endian>
-typename elfcpp::Elf_types<size>::Elf_Addr
-Sized_relobj<size, big_endian>::local_symbol_value(unsigned int symndx) const
+unsigned int
+Sized_relobj<size, big_endian>::do_set_local_dynsym_indexes(unsigned int index)
{
- gold_assert(symndx < this->local_symbol_count_);
- gold_assert(symndx < this->local_values_.size());
- const Symbol_value<size>& lv(this->local_values_[symndx]);
- return lv.value(this, 0);
+ const unsigned int loccount = this->local_symbol_count_;
+ for (unsigned int i = 1; i < loccount; ++i)
+ {
+ Symbol_value<size>& lv(this->local_values_[i]);
+ if (lv.needs_output_dynsym_entry())
+ {
+ lv.set_output_dynsym_index(index);
+ ++index;
+ }
+ }
+ return index;
}
-// Return the value of a local symbol defined in input section SHNDX,
-// with value VALUE, adding addend ADDEND. IS_SECTION_SYMBOL
-// indicates whether the symbol is a section symbol. This handles
-// SHF_MERGE sections.
+// Set the offset where local dynamic symbol information will be stored.
+// Returns the count of local symbols contributed to the symbol table by
+// this object.
+
template<int size, bool big_endian>
-typename elfcpp::Elf_types<size>::Elf_Addr
-Sized_relobj<size, big_endian>::local_value(unsigned int shndx,
- Address value,
- bool is_section_symbol,
- Address addend) const
+unsigned int
+Sized_relobj<size, big_endian>::do_set_local_dynsym_offset(off_t off)
{
- const std::vector<Map_to_output>& mo(this->map_to_output());
- Output_section* os = mo[shndx].output_section;
- if (os == NULL)
- return addend;
- gold_assert(mo[shndx].offset == -1);
-
- // Do the mapping required by the output section. If this is not a
- // section symbol, then we want to map the symbol value, and then
- // include the addend. If this is a section symbol, then we need to
- // include the addend to figure out where in the section we are,
- // before we do the mapping. This will do the right thing provided
- // the assembler is careful to only convert a relocation in a merged
- // section to a section symbol if there is a zero addend. If the
- // assembler does not do this, then in general we can't know what to
- // do, because we can't distinguish the addend for the instruction
- // format from the addend for the section offset.
-
- if (is_section_symbol)
- return os->output_address(this, shndx, value + addend);
- else
- return addend + os->output_address(this, shndx, value);
+ gold_assert(off == static_cast<off_t>(align_address(off, size >> 3)));
+ this->local_dynsym_offset_ = off;
+ return this->output_local_dynsym_count_;
}
// Write out the local symbols.
template<int size, bool big_endian>
void
-Sized_relobj<size, big_endian>::write_local_symbols(Output_file* of,
- const Stringpool* sympool)
+Sized_relobj<size, big_endian>::write_local_symbols(
+ Output_file* of,
+ const Stringpool* sympool,
+ const Stringpool* dynpool,
+ Output_symtab_xindex* symtab_xindex,
+ Output_symtab_xindex* dynsym_xindex)
{
- if (parameters->strip_all())
+ if (parameters->options().strip_all()
+ && this->output_local_dynsym_count_ == 0)
return;
gold_assert(this->symtab_shndx_ != -1U);
const int sym_size = This::sym_size;
off_t locsize = loccount * sym_size;
const unsigned char* psyms = this->get_view(symtabshdr.get_sh_offset(),
- locsize, false);
+ locsize, true, false);
// Read the symbol names.
- const unsigned int strtab_shndx = symtabshdr.get_sh_link();
- off_t strtab_size;
+ const unsigned int strtab_shndx =
+ this->adjust_shndx(symtabshdr.get_sh_link());
+ section_size_type strtab_size;
const unsigned char* pnamesu = this->section_contents(strtab_shndx,
&strtab_size,
- true);
+ false);
const char* pnames = reinterpret_cast<const char*>(pnamesu);
- // Get a view into the output file.
+ // Get views into the output file for the portions of the symbol table
+ // and the dynamic symbol table that we will be writing.
off_t output_size = this->output_local_symbol_count_ * sym_size;
- unsigned char* oview = of->get_output_view(this->local_symbol_offset_,
- output_size);
+ unsigned char* oview = NULL;
+ if (output_size > 0)
+ oview = of->get_output_view(this->local_symbol_offset_, output_size);
+
+ off_t dyn_output_size = this->output_local_dynsym_count_ * sym_size;
+ unsigned char* dyn_oview = NULL;
+ if (dyn_output_size > 0)
+ dyn_oview = of->get_output_view(this->local_dynsym_offset_,
+ dyn_output_size);
- const std::vector<Map_to_output>& mo(this->map_to_output());
+ const Output_sections out_sections(this->output_sections());
gold_assert(this->local_values_.size() == loccount);
unsigned char* ov = oview;
+ unsigned char* dyn_ov = dyn_oview;
psyms += sym_size;
for (unsigned int i = 1; i < loccount; ++i, psyms += sym_size)
{
elfcpp::Sym<size, big_endian> isym(psyms);
- if (!this->local_values_[i].needs_output_symtab_entry())
- continue;
+ Symbol_value<size>& lv(this->local_values_[i]);
- unsigned int st_shndx = isym.get_st_shndx();
- if (st_shndx < elfcpp::SHN_LORESERVE)
+ bool is_ordinary;
+ unsigned int st_shndx = this->adjust_sym_shndx(i, isym.get_st_shndx(),
+ &is_ordinary);
+ if (is_ordinary)
{
- gold_assert(st_shndx < mo.size());
- if (mo[st_shndx].output_section == NULL)
+ gold_assert(st_shndx < out_sections.size());
+ if (out_sections[st_shndx] == NULL)
continue;
- st_shndx = mo[st_shndx].output_section->out_shndx();
+ st_shndx = out_sections[st_shndx]->out_shndx();
+ if (st_shndx >= elfcpp::SHN_LORESERVE)
+ {
+ if (lv.needs_output_symtab_entry())
+ symtab_xindex->add(lv.output_symtab_index(), st_shndx);
+ if (lv.needs_output_dynsym_entry())
+ dynsym_xindex->add(lv.output_dynsym_index(), st_shndx);
+ st_shndx = elfcpp::SHN_XINDEX;
+ }
}
- elfcpp::Sym_write<size, big_endian> osym(ov);
-
- gold_assert(isym.get_st_name() < strtab_size);
- const char* name = pnames + isym.get_st_name();
- osym.put_st_name(sympool->get_offset(name));
- osym.put_st_value(this->local_values_[i].value(this, 0));
- osym.put_st_size(isym.get_st_size());
- osym.put_st_info(isym.get_st_info());
- osym.put_st_other(isym.get_st_other());
- osym.put_st_shndx(st_shndx);
+ // Write the symbol to the output symbol table.
+ if (!parameters->options().strip_all()
+ && lv.needs_output_symtab_entry())
+ {
+ elfcpp::Sym_write<size, big_endian> osym(ov);
+
+ gold_assert(isym.get_st_name() < strtab_size);
+ const char* name = pnames + isym.get_st_name();
+ osym.put_st_name(sympool->get_offset(name));
+ osym.put_st_value(this->local_values_[i].value(this, 0));
+ osym.put_st_size(isym.get_st_size());
+ osym.put_st_info(isym.get_st_info());
+ osym.put_st_other(isym.get_st_other());
+ osym.put_st_shndx(st_shndx);
+
+ ov += sym_size;
+ }
- ov += sym_size;
+ // Write the symbol to the output dynamic symbol table.
+ if (lv.needs_output_dynsym_entry())
+ {
+ gold_assert(dyn_ov < dyn_oview + dyn_output_size);
+ elfcpp::Sym_write<size, big_endian> osym(dyn_ov);
+
+ gold_assert(isym.get_st_name() < strtab_size);
+ const char* name = pnames + isym.get_st_name();
+ osym.put_st_name(dynpool->get_offset(name));
+ osym.put_st_value(this->local_values_[i].value(this, 0));
+ osym.put_st_size(isym.get_st_size());
+ osym.put_st_info(isym.get_st_info());
+ osym.put_st_other(isym.get_st_other());
+ osym.put_st_shndx(st_shndx);
+
+ dyn_ov += sym_size;
+ }
}
- gold_assert(ov - oview == output_size);
- of->write_output_view(this->local_symbol_offset_, output_size, oview);
+ if (output_size > 0)
+ {
+ gold_assert(ov - oview == output_size);
+ of->write_output_view(this->local_symbol_offset_, output_size, oview);
+ }
+
+ if (dyn_output_size > 0)
+ {
+ gold_assert(dyn_ov - dyn_oview == dyn_output_size);
+ of->write_output_view(this->local_dynsym_offset_, dyn_output_size,
+ dyn_oview);
+ }
}
// Set *INFO to symbolic information about the offset OFFSET in the
if (this->symtab_shndx_ == 0)
return false;
- off_t symbols_size;
+ section_size_type symbols_size;
const unsigned char* symbols = this->section_contents(this->symtab_shndx_,
&symbols_size,
false);
- unsigned int symbol_names_shndx = this->section_link(this->symtab_shndx_);
- off_t names_size;
+ unsigned int symbol_names_shndx =
+ this->adjust_shndx(this->section_link(this->symtab_shndx_));
+ section_size_type names_size;
const unsigned char* symbol_names_u =
this->section_contents(symbol_names_shndx, &names_size, false);
const char* symbol_names = reinterpret_cast<const char*>(symbol_names_u);
info->source_file = "(invalid)";
else
info->source_file = symbol_names + sym.get_st_name();
+ continue;
}
- else if (sym.get_st_shndx() == shndx
- && static_cast<off_t>(sym.get_st_value()) <= offset
- && (static_cast<off_t>(sym.get_st_value() + sym.get_st_size())
- > offset))
+
+ bool is_ordinary;
+ unsigned int st_shndx = this->adjust_sym_shndx(i, sym.get_st_shndx(),
+ &is_ordinary);
+ if (is_ordinary
+ && st_shndx == shndx
+ && static_cast<off_t>(sym.get_st_value()) <= offset
+ && (static_cast<off_t>(sym.get_st_value() + sym.get_st_size())
+ > offset))
{
if (sym.get_st_name() > names_size)
info->enclosing_symbol_name = "(invalid)";
else
- info->enclosing_symbol_name = symbol_names + sym.get_st_name();
+ {
+ info->enclosing_symbol_name = symbol_names + sym.get_st_name();
+ if (parameters->options().do_demangle())
+ {
+ char* demangled_name = cplus_demangle(
+ info->enclosing_symbol_name.c_str(),
+ DMGL_ANSI | DMGL_PARAMS);
+ if (demangled_name != NULL)
+ {
+ info->enclosing_symbol_name.assign(demangled_name);
+ free(demangled_name);
+ }
+ }
+ }
return true;
}
}
return false;
}
+// Look for a kept section corresponding to the given discarded section,
+// and return its output address. This is used only for relocations in
+// debugging sections. If we can't find the kept section, return 0.
+
+template<int size, bool big_endian>
+typename Sized_relobj<size, big_endian>::Address
+Sized_relobj<size, big_endian>::map_to_kept_section(
+ unsigned int shndx,
+ bool* found) const
+{
+ Kept_comdat_section *kept = this->get_kept_comdat_section(shndx);
+ if (kept != NULL)
+ {
+ gold_assert(kept->object_ != NULL);
+ *found = true;
+ Output_section* os = kept->object_->output_section(kept->shndx_);
+ Address offset = kept->object_->get_output_section_offset(kept->shndx_);
+ gold_assert(os != NULL && offset != -1U);
+ return os->address() + offset;
+ }
+ *found = false;
+ return 0;
+}
+
+// Get symbol counts.
+
+template<int size, bool big_endian>
+void
+Sized_relobj<size, big_endian>::do_get_global_symbol_counts(
+ const Symbol_table*,
+ size_t* defined,
+ size_t* used) const
+{
+ *defined = this->defined_count_;
+ size_t count = 0;
+ for (Symbols::const_iterator p = this->symbols_.begin();
+ p != this->symbols_.end();
+ ++p)
+ if (*p != NULL
+ && (*p)->source() == Symbol::FROM_OBJECT
+ && (*p)->object() == this
+ && (*p)->is_defined())
+ ++count;
+ *used = count;
+}
+
// Input_objects methods.
// Add a regular relocatable object to the list. Return false if this
bool
Input_objects::add_object(Object* obj)
{
+ // Set the global target from the first object file we recognize.
Target* target = obj->target();
- if (this->target_ == NULL)
- this->target_ = target;
- else if (this->target_ != target)
+ if (!parameters->target_valid())
+ set_parameters_target(target);
+ else if (target != ¶meters->target())
{
- gold_error(_("%s: incompatible target"), obj->name().c_str());
+ obj->error(_("incompatible target"));
return false;
}
+ // Print the filename if the -t/--trace option is selected.
+ if (parameters->options().trace())
+ gold_info("%s", obj->name().c_str());
+
if (!obj->is_dynamic())
this->relobj_list_.push_back(static_cast<Relobj*>(obj));
else
}
}
- set_parameters_size_and_endianness(target->get_size(),
- target->is_big_endian());
+ // Add this object to the cross-referencer if requested.
+ if (parameters->options().user_set_print_symbol_counts())
+ {
+ if (this->cref_ == NULL)
+ this->cref_ = new Cref();
+ this->cref_->add_object(obj);
+ }
return true;
}
}
}
+// Start processing an archive.
+
+void
+Input_objects::archive_start(Archive* archive)
+{
+ if (parameters->options().user_set_print_symbol_counts())
+ {
+ if (this->cref_ == NULL)
+ this->cref_ = new Cref();
+ this->cref_->add_archive_start(archive);
+ }
+}
+
+// Stop processing an archive.
+
+void
+Input_objects::archive_stop(Archive* archive)
+{
+ if (parameters->options().user_set_print_symbol_counts())
+ this->cref_->add_archive_stop(archive);
+}
+
+// Print symbol counts
+
+void
+Input_objects::print_symbol_counts(const Symbol_table* symtab) const
+{
+ if (parameters->options().user_set_print_symbol_counts()
+ && this->cref_ != NULL)
+ this->cref_->print_symbol_counts(symtab);
+}
+
// Relocate_info methods.
// Return a string describing the location of a relocation. This is
if (this->object->get_symbol_location_info(this->data_shndx, offset, &info))
{
ret += " in function ";
- // We could demangle this name before printing, but we don't
- // bother because gcc runs linker output through a demangle
- // filter itself. The only advantage to demangling here is if
- // someone might call ld directly, rather than via gcc. If we
- // did want to demangle, cplus_demangle() is in libiberty.
ret += info.enclosing_symbol_name;
ret += ":";
filename = info.source_file;
Object*
make_elf_object(const std::string& name, Input_file* input_file, off_t offset,
- const unsigned char* p, off_t bytes)
+ const unsigned char* p, section_offset_type bytes)
{
if (bytes < elfcpp::EI_NIDENT)
{
}
else
{
- if (bytes < elfcpp::Elf_sizes<32>::ehdr_size)
+ if (bytes < elfcpp::Elf_sizes<64>::ehdr_size)
{
gold_error(_("%s: ELF file too short"), name.c_str());
return NULL;
}
}
-// Instantiate the templates we need. We could use the configure
-// script to restrict this to only the ones for implemented targets.
+// Instantiate the templates we need.
+
+#ifdef HAVE_TARGET_32_LITTLE
+template
+void
+Object::read_section_data<32, false>(elfcpp::Elf_file<32, false, Object>*,
+ Read_symbols_data*);
+#endif
+
+#ifdef HAVE_TARGET_32_BIG
+template
+void
+Object::read_section_data<32, true>(elfcpp::Elf_file<32, true, Object>*,
+ Read_symbols_data*);
+#endif
+
+#ifdef HAVE_TARGET_64_LITTLE
+template
+void
+Object::read_section_data<64, false>(elfcpp::Elf_file<64, false, Object>*,
+ Read_symbols_data*);
+#endif
+
+#ifdef HAVE_TARGET_64_BIG
+template
+void
+Object::read_section_data<64, true>(elfcpp::Elf_file<64, true, Object>*,
+ Read_symbols_data*);
+#endif
#ifdef HAVE_TARGET_32_LITTLE
template
projects / binutils-gdb.git / blobdiff