// object.cc -- support for an object file for linking in gold
+// Copyright 2006, 2007 Free Software Foundation, Inc.
+// Written by Ian Lance Taylor <iant@google.com>.
+
+// This file is part of gold.
+
+// This program is free software; you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation; either version 3 of the License, or
+// (at your option) any later version.
+
+// This program is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with this program; if not, write to the Free Software
+// Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
+// MA 02110-1301, USA.
+
#include "gold.h"
#include <cerrno>
// Return a view of the contents of a section.
const unsigned char*
-Object::section_contents(unsigned int shndx, off_t* plen)
+Object::section_contents(unsigned int shndx, off_t* plen, bool cache)
{
Location loc(this->do_section_contents(shndx));
*plen = loc.data_size;
- return this->get_view(loc.file_offset, loc.data_size);
+ return this->get_view(loc.file_offset, loc.data_size, 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);
+ sd->section_headers = this->get_lasting_view(shoff, shnum * shdr_size, true);
// Read the section names.
const unsigned char* pshdrs = sd->section_headers->data();
sd->section_names_size = shdrnames.get_sh_size();
sd->section_names = this->get_lasting_view(shdrnames.get_sh_offset(),
- sd->section_names_size);
+ sd->section_names_size, false);
}
// If NAME is the name of a special .gnu.warning section, arrange for
output_local_symbol_count_(0),
symbols_(NULL),
local_symbol_offset_(0),
- local_values_()
+ local_values_(),
+ local_got_offsets_()
{
}
off_t extsize = symtabshdr.get_sh_size() - locsize;
// Read the symbol table.
- File_view* fvsymtab = this->get_lasting_view(extoff, extsize);
+ File_view* fvsymtab = this->get_lasting_view(extoff, extsize, false);
// Read the section header for the symbol names.
unsigned int strtab_shndx = symtabshdr.get_sh_link();
// Read the symbol names.
File_view* fvstrtab = this->get_lasting_view(strtabshdr.get_sh_offset(),
- strtabshdr.get_sh_size());
+ strtabshdr.get_sh_size(), true);
sd->symbols = fvsymtab;
sd->symbols_size = extsize;
{
// Read the section contents.
const unsigned char* pcon = this->get_view(shdr.get_sh_offset(),
- shdr.get_sh_size());
+ shdr.get_sh_size(), false);
const elfcpp::Elf_Word* pword =
reinterpret_cast<const elfcpp::Elf_Word*>(pcon);
gold_exit(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);
+ const unsigned char* psym = this->get_view(symoff, This::sym_size, true);
elfcpp::Sym<size, big_endian> sym(psym);
// Read the symbol table names.
off_t symnamelen;
const unsigned char* psymnamesu;
- psymnamesu = this->section_contents(symshdr.get_sh_link(), &symnamelen);
+ psymnamesu = this->section_contents(symshdr.get_sh_link(), &symnamelen,
+ true);
const char* psymnames = reinterpret_cast<const char*>(psymnamesu);
// Get the section group signature.
template<int size, bool big_endian>
void
-Sized_relobj<size, big_endian>::do_layout(const General_options& options,
- Symbol_table* symtab,
+Sized_relobj<size, big_endian>::do_layout(Symbol_table* symtab,
Layout* layout,
Read_symbols_data* sd)
{
if (this->handle_gnu_warning_section(name, i, symtab))
{
- if (!options.is_relocatable())
+ if (!parameters->output_is_object())
omit[i] = true;
}
const int sym_size = This::sym_size;
size_t symcount = sd->symbols_size / sym_size;
- if (symcount * sym_size != sd->symbols_size)
+ if (static_cast<off_t>(symcount * sym_size) != sd->symbols_size)
{
fprintf(stderr,
_("%s: %s: size of symbols is not multiple of symbol size\n"),
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);
+ locsize, true);
this->local_values_.resize(loccount);
const unsigned int strtab_shndx = symtabshdr.get_sh_link();
off_t strtab_size;
const unsigned char* pnamesu = this->section_contents(strtab_shndx,
- &strtab_size);
+ &strtab_size,
+ true);
const char* pnames = reinterpret_cast<const char*>(pnamesu);
// Loop over the local symbols.
unsigned int shndx = sym.get_st_shndx();
lv.set_input_shndx(shndx);
+ if (sym.get_st_type() == elfcpp::STT_SECTION)
+ lv.set_is_section_symbol();
+
if (shndx >= elfcpp::SHN_LORESERVE)
{
if (shndx == elfcpp::SHN_ABS)
}
const char* name = pnames + sym.get_st_name();
- pool->add(name, NULL);
+ pool->add(name, true, NULL);
lv.set_output_symtab_index(index);
++index;
++count;
return index;
}
+// Return the value of the local symbol symndx.
+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
+{
+ 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);
+}
+
// Return the value of a local symbol defined in input section SHNDX,
-// with value VALUE, adding addend ADDEND. This handles SHF_MERGE
-// sections.
+// with value VALUE, adding addend ADDEND. IS_SECTION_SYMBOL
+// indicates whether the symbol is a section symbol. This handles
+// SHF_MERGE sections.
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
{
const std::vector<Map_to_output>& mo(this->map_to_output());
if (os == NULL)
return addend;
gold_assert(mo[shndx].offset == -1);
- return os->output_address(this, shndx, value + addend);
+
+ // 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);
}
// Write out the local symbols.
Sized_relobj<size, big_endian>::write_local_symbols(Output_file* of,
const Stringpool* sympool)
{
+ if (parameters->strip_all())
+ return;
+
gold_assert(this->symtab_shndx_ != -1U);
if (this->symtab_shndx_ == 0)
{
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);
+ locsize, false);
// Read the symbol names.
const unsigned int strtab_shndx = symtabshdr.get_sh_link();
off_t strtab_size;
const unsigned char* pnamesu = this->section_contents(strtab_shndx,
- &strtab_size);
+ &strtab_size,
+ true);
const char* pnames = reinterpret_cast<const char*>(pnamesu);
// Get a view into the output file.
this->target_ = target;
else if (this->target_ != target)
{
- fprintf(stderr, "%s: %s: incompatible target\n",
+ fprintf(stderr, _("%s: %s: incompatible target\n"),
program_name, obj->name().c_str());
gold_exit(false);
}
+ set_parameters_size_and_endianness(target->get_size(),
+ target->is_big_endian());
+
return true;
}
projects / deliverable / binutils-gdb.git / blobdiff