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More dynamic object support, initial scripting support.

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This commit is contained in:
Ian Lance Taylor
2006-11-14 19:21:05 +00:00
parent 6c73cbb1d9
commit dbe717effb
31 changed files with 3698 additions and 373 deletions
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69
gold/dynobj.h
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@@ -3,6 +3,8 @@
#ifndef GOLD_DYNOBJ_H
#define GOLD_DYNOBJ_H
#include <vector>
#include "object.h"
namespace gold
@@ -28,6 +30,10 @@ class Sized_dynobj : public Dynobj
Sized_dynobj(const std::string& name, Input_file* input_file, off_t offset,
const typename elfcpp::Ehdr<size, big_endian>&);
// Set up the object file based on the ELF header.
void
setup(const typename elfcpp::Ehdr<size, big_endian>&);
// Read the symbols.
void
do_read_symbols(Read_symbols_data*);
@@ -41,14 +47,65 @@ class Sized_dynobj : public Dynobj
void
do_add_symbols(Symbol_table*, Read_symbols_data*);
// Return a view of the contents of a section. Set *PLEN to the
// size.
const unsigned char*
do_section_contents(unsigned int shnum, off_t* plen) = 0;
// Get the name of a section.
std::string
do_section_name(unsigned int shnum);
do_section_name(unsigned int shndx)
{ return this->elf_file_.section_name(shndx); }
// Return a view of the contents of a section. Set *PLEN to the
// size.
Object::Location
do_section_contents(unsigned int shndx)
{ return this->elf_file_.section_contents(shndx); }
private:
// For convenience.
typedef Sized_dynobj<size, big_endian> This;
static const int shdr_size = elfcpp::Elf_sizes<size>::shdr_size;
static const int sym_size = elfcpp::Elf_sizes<size>::sym_size;
static const int dyn_size = elfcpp::Elf_sizes<size>::dyn_size;
typedef elfcpp::Shdr<size, big_endian> Shdr;
typedef elfcpp::Dyn<size, big_endian> Dyn;
// Find the dynamic symbol table and the version sections, given the
// section headers.
void
find_dynsym_sections(const unsigned char* pshdrs,
unsigned int* pdynshm_shndx,
unsigned int* pversym_shndx,
unsigned int* pverdef_shndx,
unsigned int* pverneed_shndx,
unsigned int* pdynamic_shndx);
// Read the dynamic symbol section SHNDX.
void
read_dynsym_section(const unsigned char* pshdrs, unsigned int shndx,
elfcpp::SHT type, unsigned int link,
File_view** view, off_t* view_size,
unsigned int* view_info);
// Set the SONAME from the SHT_DYNAMIC section at DYNAMIC_SHNDX.
// The STRTAB parameters may have the relevant string table.
void
set_soname(const unsigned char* pshdrs, unsigned int dynamic_shndx,
unsigned int strtab_shndx, const unsigned char* strtabu,
off_t strtab_size);
// Mapping from version number to version name.
typedef std::vector<const char*> Version_map;
// Create the version map.
void
make_version_map(Read_symbols_data* sd, Version_map*) const;
// Add an entry to the version map.
void
set_version_map(Version_map*, unsigned int ndx, const char* name) const;
// General access to the ELF file.
elfcpp::Elf_file<size, big_endian, Object> elf_file_;
// The DT_SONAME name, if any.
std::string soname_;
};
} // End namespace gold.