elf_traits.h revision 03b57e008b61dfcb1fbad3aea950ae0e001748b0
1f8ee788a64d60abd8f2d742a5fdedde054ecd910Torne (Richard Coles)// Copyright 2014 The Chromium Authors. All rights reserved. 2f8ee788a64d60abd8f2d742a5fdedde054ecd910Torne (Richard Coles)// Use of this source code is governed by a BSD-style license that can be 3f8ee788a64d60abd8f2d742a5fdedde054ecd910Torne (Richard Coles)// found in the LICENSE file. 4f8ee788a64d60abd8f2d742a5fdedde054ecd910Torne (Richard Coles) 5f8ee788a64d60abd8f2d742a5fdedde054ecd910Torne (Richard Coles)#ifndef _ELF_TRAITS_H_ 6f8ee788a64d60abd8f2d742a5fdedde054ecd910Torne (Richard Coles)#define _ELF_TRAITS_H_ 7f8ee788a64d60abd8f2d742a5fdedde054ecd910Torne (Richard Coles) 8f8ee788a64d60abd8f2d742a5fdedde054ecd910Torne (Richard Coles)// NOTE: <stdint.h> is required here before <elf.h>. This is a NDK header bug. 9f8ee788a64d60abd8f2d742a5fdedde054ecd910Torne (Richard Coles)#include <stdint.h> 10f8ee788a64d60abd8f2d742a5fdedde054ecd910Torne (Richard Coles)#include <elf.h> 11f8ee788a64d60abd8f2d742a5fdedde054ecd910Torne (Richard Coles) 12f8ee788a64d60abd8f2d742a5fdedde054ecd910Torne (Richard Coles)// ELF is a traits structure used to provide convenient aliases for 13f8ee788a64d60abd8f2d742a5fdedde054ecd910Torne (Richard Coles)// 32/64 bit Elf types, depending on the target CPU bitness. 14f8ee788a64d60abd8f2d742a5fdedde054ecd910Torne (Richard Coles)#if __SIZEOF_POINTER__ == 4 15f8ee788a64d60abd8f2d742a5fdedde054ecd910Torne (Richard Coles)struct ELF { 16f8ee788a64d60abd8f2d742a5fdedde054ecd910Torne (Richard Coles) typedef Elf32_Ehdr Ehdr; 17f8ee788a64d60abd8f2d742a5fdedde054ecd910Torne (Richard Coles) typedef Elf32_Phdr Phdr; 18f8ee788a64d60abd8f2d742a5fdedde054ecd910Torne (Richard Coles) typedef Elf32_Word Word; 19f8ee788a64d60abd8f2d742a5fdedde054ecd910Torne (Richard Coles) typedef Elf32_Sword Sword; 2003b57e008b61dfcb1fbad3aea950ae0e001748b0Torne (Richard Coles) // TODO(simonb): Elf32_Sxword missing from the NDK. 2103b57e008b61dfcb1fbad3aea950ae0e001748b0Torne (Richard Coles) typedef int64_t Sxword; 22f8ee788a64d60abd8f2d742a5fdedde054ecd910Torne (Richard Coles) typedef Elf32_Addr Addr; 23f8ee788a64d60abd8f2d742a5fdedde054ecd910Torne (Richard Coles) typedef Elf32_Dyn Dyn; 24f8ee788a64d60abd8f2d742a5fdedde054ecd910Torne (Richard Coles) typedef Elf32_Sym Sym; 25f8ee788a64d60abd8f2d742a5fdedde054ecd910Torne (Richard Coles) typedef Elf32_Rel Rel; 26f8ee788a64d60abd8f2d742a5fdedde054ecd910Torne (Richard Coles) typedef Elf32_Rela Rela; 27f8ee788a64d60abd8f2d742a5fdedde054ecd910Torne (Richard Coles) typedef Elf32_auxv_t auxv_t; 28f8ee788a64d60abd8f2d742a5fdedde054ecd910Torne (Richard Coles) 29f8ee788a64d60abd8f2d742a5fdedde054ecd910Torne (Richard Coles) enum { kElfClass = ELFCLASS32 }; 30f8ee788a64d60abd8f2d742a5fdedde054ecd910Torne (Richard Coles) enum { kElfBits = 32 }; 31f8ee788a64d60abd8f2d742a5fdedde054ecd910Torne (Richard Coles) 3203b57e008b61dfcb1fbad3aea950ae0e001748b0Torne (Richard Coles)# ifndef ELF_R_TYPE 3303b57e008b61dfcb1fbad3aea950ae0e001748b0Torne (Richard Coles)# define ELF_R_TYPE ELF32_R_TYPE 3403b57e008b61dfcb1fbad3aea950ae0e001748b0Torne (Richard Coles)# endif 35f8ee788a64d60abd8f2d742a5fdedde054ecd910Torne (Richard Coles) 3603b57e008b61dfcb1fbad3aea950ae0e001748b0Torne (Richard Coles)# ifndef ELF_R_SYM 3703b57e008b61dfcb1fbad3aea950ae0e001748b0Torne (Richard Coles)# define ELF_R_SYM ELF32_R_SYM 3803b57e008b61dfcb1fbad3aea950ae0e001748b0Torne (Richard Coles)# endif 3903b57e008b61dfcb1fbad3aea950ae0e001748b0Torne (Richard Coles) 4003b57e008b61dfcb1fbad3aea950ae0e001748b0Torne (Richard Coles)# ifndef ELF_R_INFO 4103b57e008b61dfcb1fbad3aea950ae0e001748b0Torne (Richard Coles)# define ELF_R_INFO ELF32_R_INFO 4203b57e008b61dfcb1fbad3aea950ae0e001748b0Torne (Richard Coles)# endif 43f8ee788a64d60abd8f2d742a5fdedde054ecd910Torne (Richard Coles)}; 44f8ee788a64d60abd8f2d742a5fdedde054ecd910Torne (Richard Coles)#elif __SIZEOF_POINTER__ == 8 45f8ee788a64d60abd8f2d742a5fdedde054ecd910Torne (Richard Coles)struct ELF { 46f8ee788a64d60abd8f2d742a5fdedde054ecd910Torne (Richard Coles) typedef Elf64_Ehdr Ehdr; 47f8ee788a64d60abd8f2d742a5fdedde054ecd910Torne (Richard Coles) typedef Elf64_Phdr Phdr; 48f8ee788a64d60abd8f2d742a5fdedde054ecd910Torne (Richard Coles) typedef Elf64_Word Word; 49f8ee788a64d60abd8f2d742a5fdedde054ecd910Torne (Richard Coles) typedef Elf64_Sword Sword; 5003b57e008b61dfcb1fbad3aea950ae0e001748b0Torne (Richard Coles) typedef Elf64_Sxword Sxword; 51f8ee788a64d60abd8f2d742a5fdedde054ecd910Torne (Richard Coles) typedef Elf64_Addr Addr; 52f8ee788a64d60abd8f2d742a5fdedde054ecd910Torne (Richard Coles) typedef Elf64_Dyn Dyn; 53f8ee788a64d60abd8f2d742a5fdedde054ecd910Torne (Richard Coles) typedef Elf64_Sym Sym; 54f8ee788a64d60abd8f2d742a5fdedde054ecd910Torne (Richard Coles) typedef Elf64_Rel Rel; 55f8ee788a64d60abd8f2d742a5fdedde054ecd910Torne (Richard Coles) typedef Elf64_Rela Rela; 56f8ee788a64d60abd8f2d742a5fdedde054ecd910Torne (Richard Coles) typedef Elf64_auxv_t auxv_t; 57f8ee788a64d60abd8f2d742a5fdedde054ecd910Torne (Richard Coles) 58f8ee788a64d60abd8f2d742a5fdedde054ecd910Torne (Richard Coles) enum { kElfClass = ELFCLASS64 }; 59f8ee788a64d60abd8f2d742a5fdedde054ecd910Torne (Richard Coles) enum { kElfBits = 64 }; 60f8ee788a64d60abd8f2d742a5fdedde054ecd910Torne (Richard Coles) 6103b57e008b61dfcb1fbad3aea950ae0e001748b0Torne (Richard Coles)# ifndef ELF_R_TYPE 6203b57e008b61dfcb1fbad3aea950ae0e001748b0Torne (Richard Coles)# define ELF_R_TYPE ELF64_R_TYPE 6303b57e008b61dfcb1fbad3aea950ae0e001748b0Torne (Richard Coles)# endif 64f8ee788a64d60abd8f2d742a5fdedde054ecd910Torne (Richard Coles) 6503b57e008b61dfcb1fbad3aea950ae0e001748b0Torne (Richard Coles)# ifndef ELF_R_SYM 6603b57e008b61dfcb1fbad3aea950ae0e001748b0Torne (Richard Coles)# define ELF_R_SYM ELF64_R_SYM 6703b57e008b61dfcb1fbad3aea950ae0e001748b0Torne (Richard Coles)# endif 6803b57e008b61dfcb1fbad3aea950ae0e001748b0Torne (Richard Coles) 6903b57e008b61dfcb1fbad3aea950ae0e001748b0Torne (Richard Coles)// TODO(simonb): ELF64_R_INFO missing from the NDK. 7003b57e008b61dfcb1fbad3aea950ae0e001748b0Torne (Richard Coles)# ifndef ELF64_R_INFO 7103b57e008b61dfcb1fbad3aea950ae0e001748b0Torne (Richard Coles)# define ELF64_R_INFO(sym,type) ((((Elf64_Xword) (sym)) << 32) + (type)) 7203b57e008b61dfcb1fbad3aea950ae0e001748b0Torne (Richard Coles)# endif 7303b57e008b61dfcb1fbad3aea950ae0e001748b0Torne (Richard Coles) 7403b57e008b61dfcb1fbad3aea950ae0e001748b0Torne (Richard Coles)# ifndef ELF_R_INFO 7503b57e008b61dfcb1fbad3aea950ae0e001748b0Torne (Richard Coles)# define ELF_R_INFO ELF64_R_INFO 7603b57e008b61dfcb1fbad3aea950ae0e001748b0Torne (Richard Coles)# endif 77f8ee788a64d60abd8f2d742a5fdedde054ecd910Torne (Richard Coles)}; 78f8ee788a64d60abd8f2d742a5fdedde054ecd910Torne (Richard Coles)#else 79f8ee788a64d60abd8f2d742a5fdedde054ecd910Torne (Richard Coles)#error "Unsupported target CPU bitness" 80f8ee788a64d60abd8f2d742a5fdedde054ecd910Torne (Richard Coles)#endif 81f8ee788a64d60abd8f2d742a5fdedde054ecd910Torne (Richard Coles) 82f8ee788a64d60abd8f2d742a5fdedde054ecd910Torne (Richard Coles)#ifdef __arm__ 83f8ee788a64d60abd8f2d742a5fdedde054ecd910Torne (Richard Coles)#define ELF_MACHINE EM_ARM 84f8ee788a64d60abd8f2d742a5fdedde054ecd910Torne (Richard Coles)#elif defined(__i386__) 85f8ee788a64d60abd8f2d742a5fdedde054ecd910Torne (Richard Coles)#define ELF_MACHINE EM_386 865f1c94371a64b3196d4be9466099bb892df9b88eTorne (Richard Coles)#elif defined(__x86_64__) 875f1c94371a64b3196d4be9466099bb892df9b88eTorne (Richard Coles)#define ELF_MACHINE EM_X86_64 88f8ee788a64d60abd8f2d742a5fdedde054ecd910Torne (Richard Coles)#elif defined(__mips__) && !defined(__LP64__) // mips64el defines __mips__ too 89f8ee788a64d60abd8f2d742a5fdedde054ecd910Torne (Richard Coles)#define ELF_MACHINE EM_MIPS 90f8ee788a64d60abd8f2d742a5fdedde054ecd910Torne (Richard Coles)#elif defined(__aarch64__) 91f8ee788a64d60abd8f2d742a5fdedde054ecd910Torne (Richard Coles)#define ELF_MACHINE EM_AARCH64 92f8ee788a64d60abd8f2d742a5fdedde054ecd910Torne (Richard Coles)#else 93f8ee788a64d60abd8f2d742a5fdedde054ecd910Torne (Richard Coles)#error "Unsupported target CPU architecture" 94f8ee788a64d60abd8f2d742a5fdedde054ecd910Torne (Richard Coles)#endif 95f8ee788a64d60abd8f2d742a5fdedde054ecd910Torne (Richard Coles) 96f8ee788a64d60abd8f2d742a5fdedde054ecd910Torne (Richard Coles)#endif // _ELF_TRAITS_H_ 97