Rework swapping code.

This commit is contained in:
Ian Lance Taylor 2006-11-06 22:45:08 +00:00
parent 000ef4f0ec
commit 8d9455b422
3 changed files with 426 additions and 252 deletions

View file

@ -5,8 +5,6 @@
#include "elfcpp_config.h"
#include <byteswap.h>
#ifndef ELFCPP_INTERNAL_H
#define ELFCPP_INTERNAL_H
@ -16,163 +14,6 @@ namespace elfcpp
namespace internal
{
#ifdef WORDS_BIGENDIAN
const bool host_big_endian = true;
#else
const bool host_big_endian = false;
#endif
// Conversion routines between target and host.
// Convert Elf_Half.
template<bool same_endian>
Elf_Half
convert_half_host(Elf_Half v);
template<>
inline Elf_Half
convert_half_host<true>(Elf_Half v)
{
return v;
}
template<>
inline Elf_Half
convert_half_host<false>(Elf_Half v)
{
return bswap_16(v);
}
template<bool big_endian>
inline Elf_Half
convert_half(Elf_Half v)
{
return convert_half_host<big_endian == host_big_endian>(v);
}
// Convert Elf_Word.
template<bool same_endian>
Elf_Word
convert_word_host(Elf_Word v);
template<>
inline Elf_Word
convert_word_host<true>(Elf_Word v)
{
return v;
}
template<>
inline Elf_Word
convert_word_host<false>(Elf_Word v)
{
return bswap_32(v);
}
template<bool big_endian>
inline Elf_Word
convert_word(Elf_Word v)
{
return convert_word_host<big_endian == host_big_endian>(v);
}
// Convert Elf_Xword.
template<bool same_endian>
Elf_Xword
convert_xword_host(Elf_Xword v);
template<>
inline Elf_Xword
convert_xword_host<true>(Elf_Xword v)
{
return v;
}
template<>
inline Elf_Xword
convert_xword_host<false>(Elf_Xword v)
{
return bswap_64(v);
}
template<bool big_endian>
inline Elf_Xword
convert_xword(Elf_Xword v)
{
return convert_xword_host<big_endian == host_big_endian>(v);
}
// Convert Elf_addr.
template<int size, bool same_endian>
typename Elf_types<size>::Elf_Addr
convert_addr_size(typename Elf_types<size>::Elf_Addr);
template<>
inline Elf_types<32>::Elf_Addr
convert_addr_size<32, true>(Elf_types<32>::Elf_Addr v)
{
return v;
}
template<>
inline Elf_types<64>::Elf_Addr
convert_addr_size<64, true>(Elf_types<64>::Elf_Addr v)
{
return v;
}
template<>
inline Elf_types<32>::Elf_Addr
convert_addr_size<32, false>(Elf_types<32>::Elf_Addr v)
{
return bswap_32(v);
}
template<>
inline Elf_types<64>::Elf_Addr
convert_addr_size<64, false>(Elf_types<64>::Elf_Addr v)
{
return bswap_64(v);
}
template<int size, bool big_endian>
inline typename Elf_types<size>::Elf_Addr
convert_addr(typename Elf_types<size>::Elf_Addr v)
{
return convert_addr_size<size, big_endian == host_big_endian>(v);
}
// Convert Elf_Off.
template<int size, bool big_endian>
inline typename Elf_types<size>::Elf_Off
convert_off(typename Elf_types<size>::Elf_Off v)
{
return convert_addr_size<size, big_endian == host_big_endian>(v);
}
// Convert Elf_WXword.
template<int size, bool big_endian>
inline typename Elf_types<size>::Elf_WXword
convert_wxword(typename Elf_types<size>::Elf_WXword v)
{
return convert_addr_size<size, big_endian == host_big_endian>(v);
}
// Convert ELF_Swxword.
template<int size, bool big_endian>
inline typename Elf_types<size>::Elf_Swxword
convert_swxword(typename Elf_types<size>::Elf_Swxword v)
{
return convert_addr_size<size, big_endian == host_big_endian>(v);
}
// The ELF file header.
template<int size>