298 lines
5.6 KiB
C++
298 lines
5.6 KiB
C++
// elfcpp_internal.h -- internals for elfcpp -*- C++ -*-
|
|
|
|
// This is included by elfcpp.h, the external interface, but holds
|
|
// information which we want to keep private.
|
|
|
|
#include "elfcpp_config.h"
|
|
|
|
#include <byteswap.h>
|
|
|
|
#ifndef ELFCPP_INTERNAL_H
|
|
#define ELFCPP_INTERNAL_H
|
|
|
|
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>
|
|
struct Ehdr_data
|
|
{
|
|
unsigned char e_ident[EI_NIDENT];
|
|
Elf_Half e_type;
|
|
Elf_Half e_machine;
|
|
Elf_Word e_version;
|
|
typename Elf_types<size>::Elf_Addr e_entry;
|
|
typename Elf_types<size>::Elf_Off e_phoff;
|
|
typename Elf_types<size>::Elf_Off e_shoff;
|
|
Elf_Word e_flags;
|
|
Elf_Half e_ehsize;
|
|
Elf_Half e_phentsize;
|
|
Elf_Half e_phnum;
|
|
Elf_Half e_shentsize;
|
|
Elf_Half e_shnum;
|
|
Elf_Half e_shstrndx;
|
|
};
|
|
|
|
// An Elf section header.
|
|
|
|
template<int size>
|
|
struct Shdr_data
|
|
{
|
|
Elf_Word sh_name;
|
|
Elf_Word sh_type;
|
|
typename Elf_types<size>::Elf_WXword sh_flags;
|
|
typename Elf_types<size>::Elf_Addr sh_addr;
|
|
typename Elf_types<size>::Elf_Off sh_offset;
|
|
typename Elf_types<size>::Elf_WXword sh_size;
|
|
Elf_Word sh_link;
|
|
Elf_Word sh_info;
|
|
typename Elf_types<size>::Elf_WXword sh_addralign;
|
|
typename Elf_types<size>::Elf_WXword sh_entsize;
|
|
};
|
|
|
|
// An ELF segment header. We use template specialization for the
|
|
// 32-bit and 64-bit versions because the fields are in a different
|
|
// order.
|
|
|
|
template<int size>
|
|
struct Phdr_data;
|
|
|
|
template<>
|
|
struct Phdr_data<32>
|
|
{
|
|
Elf_Word p_type;
|
|
Elf_types<32>::Elf_Off p_offset;
|
|
Elf_types<32>::Elf_Addr p_vaddr;
|
|
Elf_types<32>::Elf_Addr p_paddr;
|
|
Elf_Word p_filesz;
|
|
Elf_Word p_memsz;
|
|
Elf_Word p_flags;
|
|
Elf_Word p_align;
|
|
};
|
|
|
|
template<>
|
|
struct Phdr_data<64>
|
|
{
|
|
Elf_Word p_type;
|
|
Elf_Word p_flags;
|
|
Elf_types<64>::Elf_Off p_offset;
|
|
Elf_types<64>::Elf_Addr p_vaddr;
|
|
Elf_types<64>::Elf_Addr p_paddr;
|
|
Elf_Xword p_filesz;
|
|
Elf_Xword p_memsz;
|
|
Elf_Xword p_align;
|
|
};
|
|
|
|
// An ELF symbol table entry. We use template specialization for the
|
|
// 32-bit and 64-bit versions because the fields are in a different
|
|
// order.
|
|
|
|
template<int size>
|
|
struct Sym_data;
|
|
|
|
template<>
|
|
struct Sym_data<32>
|
|
{
|
|
Elf_Word st_name;
|
|
Elf_types<32>::Elf_Addr st_value;
|
|
Elf_Word st_size;
|
|
unsigned char st_info;
|
|
unsigned char st_other;
|
|
Elf_Half st_shndx;
|
|
};
|
|
|
|
template<>
|
|
struct Sym_data<64>
|
|
{
|
|
Elf_Word st_name;
|
|
unsigned char st_info;
|
|
unsigned char st_other;
|
|
Elf_Half st_shndx;
|
|
Elf_types<64>::Elf_Addr st_value;
|
|
Elf_Xword st_size;
|
|
};
|
|
|
|
// Elf relocation table entries.
|
|
|
|
template<int size>
|
|
struct Rel_data
|
|
{
|
|
typename Elf_types<size>::Elf_Addr r_offset;
|
|
typename Elf_types<size>::Elf_WXword r_info;
|
|
};
|
|
|
|
template<int size>
|
|
struct Rela_data
|
|
{
|
|
typename Elf_types<size>::Elf_Addr r_offset;
|
|
typename Elf_types<size>::Elf_WXword r_info;
|
|
typename Elf_types<size>::Elf_Swxword r_addend;
|
|
};
|
|
|
|
} // End namespace internal.
|
|
|
|
} // End namespace elfcpp.
|
|
|
|
#endif // !defined(ELFCPP_INTERNAL_H)
|