ELF.h revision 9a9ad77847c1be4ffc5ba6304e33ccecbf72e43f
124943d2ee8bfaa7cf5893e4709143924157a5c1eChris Lattner//===-- llvm/Support/ELF.h - ELF constants and data structures --*- C++ -*-===// 224943d2ee8bfaa7cf5893e4709143924157a5c1eChris Lattner// 324943d2ee8bfaa7cf5893e4709143924157a5c1eChris Lattner// The LLVM Compiler Infrastructure 424943d2ee8bfaa7cf5893e4709143924157a5c1eChris Lattner// 524943d2ee8bfaa7cf5893e4709143924157a5c1eChris Lattner// This file is distributed under the University of Illinois Open Source 624943d2ee8bfaa7cf5893e4709143924157a5c1eChris Lattner// License. See LICENSE.TXT for details. 724943d2ee8bfaa7cf5893e4709143924157a5c1eChris Lattner// 824943d2ee8bfaa7cf5893e4709143924157a5c1eChris Lattner//===----------------------------------------------------------------------===// 924943d2ee8bfaa7cf5893e4709143924157a5c1eChris Lattner// 1024943d2ee8bfaa7cf5893e4709143924157a5c1eChris Lattner// This header contains common, non-processor-specific data structures and 1198f930f429160f9777f626c3ac6aa609f4e965d2Caroline Tice// constants for the ELF file format. 1224943d2ee8bfaa7cf5893e4709143924157a5c1eChris Lattner// 137826c8894803dc729f29789ebc038956a94d3e7aCaroline Tice// The details of the ELF32 bits in this file are largely based on the Tool 1498f930f429160f9777f626c3ac6aa609f4e965d2Caroline Tice// Interface Standard (TIS) Executable and Linking Format (ELF) Specification 151501a967735469f0e21950905cc64ca24d305fa0Eli Friedman// Version 1.2, May 1995. The ELF64 stuff is based on ELF-64 Object File Format 1624943d2ee8bfaa7cf5893e4709143924157a5c1eChris Lattner// Version 1.5, Draft 2, May 1998 as well as OpenBSD header files. 1724943d2ee8bfaa7cf5893e4709143924157a5c1eChris Lattner// 1824943d2ee8bfaa7cf5893e4709143924157a5c1eChris Lattner//===----------------------------------------------------------------------===// 1924943d2ee8bfaa7cf5893e4709143924157a5c1eChris Lattner 2024943d2ee8bfaa7cf5893e4709143924157a5c1eChris Lattner#ifndef LLVM_SUPPORT_ELF_H 2124943d2ee8bfaa7cf5893e4709143924157a5c1eChris Lattner#define LLVM_SUPPORT_ELF_H 2263094e0bb161580564954dee512955c1c79d3476Greg Clayton 2324943d2ee8bfaa7cf5893e4709143924157a5c1eChris Lattner#include "llvm/System/DataTypes.h" 2424943d2ee8bfaa7cf5893e4709143924157a5c1eChris Lattner#include <cstring> 2524943d2ee8bfaa7cf5893e4709143924157a5c1eChris Lattner 2624943d2ee8bfaa7cf5893e4709143924157a5c1eChris Lattnernamespace llvm { 2763094e0bb161580564954dee512955c1c79d3476Greg Clayton 2824943d2ee8bfaa7cf5893e4709143924157a5c1eChris Lattnernamespace ELF { 2924943d2ee8bfaa7cf5893e4709143924157a5c1eChris Lattner 3063094e0bb161580564954dee512955c1c79d3476Greg Claytontypedef uint32_t Elf32_Addr; // Program address 3124943d2ee8bfaa7cf5893e4709143924157a5c1eChris Lattnertypedef uint16_t Elf32_Half; 3224943d2ee8bfaa7cf5893e4709143924157a5c1eChris Lattnertypedef uint32_t Elf32_Off; // File offset 3324943d2ee8bfaa7cf5893e4709143924157a5c1eChris Lattnertypedef int32_t Elf32_Sword; 3424943d2ee8bfaa7cf5893e4709143924157a5c1eChris Lattnertypedef uint32_t Elf32_Word; 3524943d2ee8bfaa7cf5893e4709143924157a5c1eChris Lattner 3624943d2ee8bfaa7cf5893e4709143924157a5c1eChris Lattnertypedef uint64_t Elf64_Addr; 3724943d2ee8bfaa7cf5893e4709143924157a5c1eChris Lattnertypedef uint64_t Elf64_Off; 3824943d2ee8bfaa7cf5893e4709143924157a5c1eChris Lattnertypedef int32_t Elf64_Shalf; 3924943d2ee8bfaa7cf5893e4709143924157a5c1eChris Lattnertypedef int32_t Elf64_Sword; 4024943d2ee8bfaa7cf5893e4709143924157a5c1eChris Lattnertypedef uint32_t Elf64_Word; 4124943d2ee8bfaa7cf5893e4709143924157a5c1eChris Lattnertypedef int64_t Elf64_Sxword; 4224943d2ee8bfaa7cf5893e4709143924157a5c1eChris Lattnertypedef uint64_t Elf64_Xword; 4363094e0bb161580564954dee512955c1c79d3476Greg Claytontypedef uint32_t Elf64_Half; 4463094e0bb161580564954dee512955c1c79d3476Greg Claytontypedef uint16_t Elf64_Quarter; 4524943d2ee8bfaa7cf5893e4709143924157a5c1eChris Lattner 4663094e0bb161580564954dee512955c1c79d3476Greg Clayton// Object file magic string. 4724943d2ee8bfaa7cf5893e4709143924157a5c1eChris Lattnerstatic const char ElfMagic[] = { 0x7f, 'E', 'L', 'F', '\0' }; 4824943d2ee8bfaa7cf5893e4709143924157a5c1eChris Lattner 4963094e0bb161580564954dee512955c1c79d3476Greg Clayton// e_ident size and indices. 507826c8894803dc729f29789ebc038956a94d3e7aCaroline Ticeenum { 5124943d2ee8bfaa7cf5893e4709143924157a5c1eChris Lattner EI_MAG0 = 0, // File identification index. 5224943d2ee8bfaa7cf5893e4709143924157a5c1eChris Lattner EI_MAG1 = 1, // File identification index. 5324943d2ee8bfaa7cf5893e4709143924157a5c1eChris Lattner EI_MAG2 = 2, // File identification index. 5424943d2ee8bfaa7cf5893e4709143924157a5c1eChris Lattner EI_MAG3 = 3, // File identification index. 5524943d2ee8bfaa7cf5893e4709143924157a5c1eChris Lattner EI_CLASS = 4, // File class. 5624943d2ee8bfaa7cf5893e4709143924157a5c1eChris Lattner EI_DATA = 5, // Data encoding. 5724943d2ee8bfaa7cf5893e4709143924157a5c1eChris Lattner EI_VERSION = 6, // File version. 5863094e0bb161580564954dee512955c1c79d3476Greg Clayton EI_OSABI = 7, // OS/ABI identification. 5963094e0bb161580564954dee512955c1c79d3476Greg Clayton EI_ABIVERSION = 8, // ABI version. 6024943d2ee8bfaa7cf5893e4709143924157a5c1eChris Lattner EI_PAD = 9, // Start of padding bytes. 6124943d2ee8bfaa7cf5893e4709143924157a5c1eChris Lattner EI_NIDENT = 16 // Number of bytes in e_ident. 6224943d2ee8bfaa7cf5893e4709143924157a5c1eChris Lattner}; 6324943d2ee8bfaa7cf5893e4709143924157a5c1eChris Lattner 6424943d2ee8bfaa7cf5893e4709143924157a5c1eChris Lattnerstruct Elf32_Ehdr { 6524943d2ee8bfaa7cf5893e4709143924157a5c1eChris Lattner unsigned char e_ident[EI_NIDENT]; // ELF Identification bytes 6663094e0bb161580564954dee512955c1c79d3476Greg Clayton Elf32_Half e_type; // Type of file (see ET_* below) 6763094e0bb161580564954dee512955c1c79d3476Greg Clayton Elf32_Half e_machine; // Required architecture for this file (see EM_*) 6824943d2ee8bfaa7cf5893e4709143924157a5c1eChris Lattner Elf32_Word e_version; // Must be equal to 1 6924943d2ee8bfaa7cf5893e4709143924157a5c1eChris Lattner Elf32_Addr e_entry; // Address to jump to in order to start program 7024943d2ee8bfaa7cf5893e4709143924157a5c1eChris Lattner Elf32_Off e_phoff; // Program header table's file offset, in bytes 7124943d2ee8bfaa7cf5893e4709143924157a5c1eChris Lattner Elf32_Off e_shoff; // Section header table's file offset, in bytes 7224943d2ee8bfaa7cf5893e4709143924157a5c1eChris Lattner Elf32_Word e_flags; // Processor-specific flags 73952e9dc874944fcdbbb224f3ec4fc2c859376f64Greg Clayton Elf32_Half e_ehsize; // Size of ELF header, in bytes 747826c8894803dc729f29789ebc038956a94d3e7aCaroline Tice Elf32_Half e_phentsize; // Size of an entry in the program header table 757826c8894803dc729f29789ebc038956a94d3e7aCaroline Tice Elf32_Half e_phnum; // Number of entries in the program header table 7663094e0bb161580564954dee512955c1c79d3476Greg Clayton Elf32_Half e_shentsize; // Size of an entry in the section header table 777826c8894803dc729f29789ebc038956a94d3e7aCaroline Tice Elf32_Half e_shnum; // Number of entries in the section header table 787826c8894803dc729f29789ebc038956a94d3e7aCaroline Tice Elf32_Half e_shstrndx; // Sect hdr table index of sect name string table 797826c8894803dc729f29789ebc038956a94d3e7aCaroline Tice bool checkMagic() const { 80a66ba46379fe41036d870975c56ccc2319cb6618Greg Clayton return (memcmp(e_ident, ElfMagic, strlen(ElfMagic))) == 0; 817826c8894803dc729f29789ebc038956a94d3e7aCaroline Tice } 827826c8894803dc729f29789ebc038956a94d3e7aCaroline Tice unsigned char getFileClass() const { return e_ident[EI_CLASS]; } 8324943d2ee8bfaa7cf5893e4709143924157a5c1eChris Lattner unsigned char getDataEncoding() const { return e_ident[EI_DATA]; } 8424943d2ee8bfaa7cf5893e4709143924157a5c1eChris Lattner}; 8524943d2ee8bfaa7cf5893e4709143924157a5c1eChris Lattner 8624943d2ee8bfaa7cf5893e4709143924157a5c1eChris Lattner// 64-bit ELF header. Fields are the same as for ELF32, but with different 8724943d2ee8bfaa7cf5893e4709143924157a5c1eChris Lattner// types (see above). 88952e9dc874944fcdbbb224f3ec4fc2c859376f64Greg Claytonstruct Elf64_Ehdr { 89574c3d63822cc7fd52bf6f6a94b6882fec4c8ce9Jim Ingham unsigned char e_ident[EI_NIDENT]; 9063094e0bb161580564954dee512955c1c79d3476Greg Clayton Elf64_Quarter e_type; 91a66ba46379fe41036d870975c56ccc2319cb6618Greg Clayton Elf64_Quarter e_machine; 92a66ba46379fe41036d870975c56ccc2319cb6618Greg Clayton Elf64_Half e_version; 93a66ba46379fe41036d870975c56ccc2319cb6618Greg Clayton Elf64_Addr e_entry; 94a66ba46379fe41036d870975c56ccc2319cb6618Greg Clayton Elf64_Off e_phoff; 95a66ba46379fe41036d870975c56ccc2319cb6618Greg Clayton Elf64_Off e_shoff; 96a66ba46379fe41036d870975c56ccc2319cb6618Greg Clayton Elf64_Half e_flags; 9724943d2ee8bfaa7cf5893e4709143924157a5c1eChris Lattner Elf64_Quarter e_ehsize; 9824943d2ee8bfaa7cf5893e4709143924157a5c1eChris Lattner Elf64_Quarter e_phentsize; 9924943d2ee8bfaa7cf5893e4709143924157a5c1eChris Lattner Elf64_Quarter e_phnum; 10024943d2ee8bfaa7cf5893e4709143924157a5c1eChris Lattner Elf64_Quarter e_shentsize; 10124943d2ee8bfaa7cf5893e4709143924157a5c1eChris Lattner Elf64_Quarter e_shnum; 102952e9dc874944fcdbbb224f3ec4fc2c859376f64Greg Clayton Elf64_Quarter e_shstrndx; 103a66ba46379fe41036d870975c56ccc2319cb6618Greg Clayton bool checkMagic() const { 104a66ba46379fe41036d870975c56ccc2319cb6618Greg Clayton return (memcmp(e_ident, ElfMagic, strlen(ElfMagic))) == 0; 10563094e0bb161580564954dee512955c1c79d3476Greg Clayton } 106a66ba46379fe41036d870975c56ccc2319cb6618Greg Clayton unsigned char getFileClass() const { return e_ident[EI_CLASS]; } 107a66ba46379fe41036d870975c56ccc2319cb6618Greg Clayton unsigned char getDataEncoding() const { return e_ident[EI_DATA]; } 108a66ba46379fe41036d870975c56ccc2319cb6618Greg Clayton}; 109a66ba46379fe41036d870975c56ccc2319cb6618Greg Clayton 110a66ba46379fe41036d870975c56ccc2319cb6618Greg Clayton// File types 111a66ba46379fe41036d870975c56ccc2319cb6618Greg Claytonenum { 112a66ba46379fe41036d870975c56ccc2319cb6618Greg Clayton ET_NONE = 0, // No file type 11324943d2ee8bfaa7cf5893e4709143924157a5c1eChris Lattner ET_REL = 1, // Relocatable file 11424943d2ee8bfaa7cf5893e4709143924157a5c1eChris Lattner ET_EXEC = 2, // Executable file 11524943d2ee8bfaa7cf5893e4709143924157a5c1eChris Lattner ET_DYN = 3, // Shared object file 11624943d2ee8bfaa7cf5893e4709143924157a5c1eChris Lattner ET_CORE = 4, // Core file 11724943d2ee8bfaa7cf5893e4709143924157a5c1eChris Lattner ET_LOPROC = 0xff00, // Beginning of processor-specific codes 118952e9dc874944fcdbbb224f3ec4fc2c859376f64Greg Clayton ET_HIPROC = 0xffff // Processor-specific 119a66ba46379fe41036d870975c56ccc2319cb6618Greg Clayton}; 12063094e0bb161580564954dee512955c1c79d3476Greg Clayton 121a66ba46379fe41036d870975c56ccc2319cb6618Greg Clayton// Versioning 122a66ba46379fe41036d870975c56ccc2319cb6618Greg Claytonenum { 123a66ba46379fe41036d870975c56ccc2319cb6618Greg Clayton EV_NONE = 0, 124a66ba46379fe41036d870975c56ccc2319cb6618Greg Clayton EV_CURRENT = 1 125a66ba46379fe41036d870975c56ccc2319cb6618Greg Clayton}; 126a66ba46379fe41036d870975c56ccc2319cb6618Greg Clayton 12724943d2ee8bfaa7cf5893e4709143924157a5c1eChris Lattner// Machine architectures 12824943d2ee8bfaa7cf5893e4709143924157a5c1eChris Lattnerenum { 12924943d2ee8bfaa7cf5893e4709143924157a5c1eChris Lattner EM_NONE = 0, // No machine 13024943d2ee8bfaa7cf5893e4709143924157a5c1eChris Lattner EM_M32 = 1, // AT&T WE 32100 13124943d2ee8bfaa7cf5893e4709143924157a5c1eChris Lattner EM_SPARC = 2, // SPARC 13224943d2ee8bfaa7cf5893e4709143924157a5c1eChris Lattner EM_386 = 3, // Intel 386 13363094e0bb161580564954dee512955c1c79d3476Greg Clayton EM_68K = 4, // Motorola 68000 13424943d2ee8bfaa7cf5893e4709143924157a5c1eChris Lattner EM_88K = 5, // Motorola 88000 13524943d2ee8bfaa7cf5893e4709143924157a5c1eChris Lattner EM_486 = 6, // Intel 486 (deprecated) 13624943d2ee8bfaa7cf5893e4709143924157a5c1eChris Lattner EM_860 = 7, // Intel 80860 13724943d2ee8bfaa7cf5893e4709143924157a5c1eChris Lattner EM_MIPS = 8, // MIPS R3000 13824943d2ee8bfaa7cf5893e4709143924157a5c1eChris Lattner EM_PPC = 20, // PowerPC 13924943d2ee8bfaa7cf5893e4709143924157a5c1eChris Lattner EM_PPC64 = 21, // PowerPC64 14063094e0bb161580564954dee512955c1c79d3476Greg Clayton EM_ARM = 40, // ARM 14124943d2ee8bfaa7cf5893e4709143924157a5c1eChris Lattner EM_ALPHA = 41, // DEC Alpha 14224943d2ee8bfaa7cf5893e4709143924157a5c1eChris Lattner EM_SPARCV9 = 43, // SPARC V9 14324943d2ee8bfaa7cf5893e4709143924157a5c1eChris Lattner EM_X86_64 = 62 // AMD64 14424943d2ee8bfaa7cf5893e4709143924157a5c1eChris Lattner}; 14524943d2ee8bfaa7cf5893e4709143924157a5c1eChris Lattner 14624943d2ee8bfaa7cf5893e4709143924157a5c1eChris Lattner// Object file classes. 14724943d2ee8bfaa7cf5893e4709143924157a5c1eChris Lattnerenum { 14863094e0bb161580564954dee512955c1c79d3476Greg Clayton ELFCLASS32 = 1, // 32-bit object file 14924943d2ee8bfaa7cf5893e4709143924157a5c1eChris Lattner ELFCLASS64 = 2 // 64-bit object file 15024943d2ee8bfaa7cf5893e4709143924157a5c1eChris Lattner}; 15124943d2ee8bfaa7cf5893e4709143924157a5c1eChris Lattner 15224943d2ee8bfaa7cf5893e4709143924157a5c1eChris Lattner// Object file byte orderings. 15324943d2ee8bfaa7cf5893e4709143924157a5c1eChris Lattnerenum { 15424943d2ee8bfaa7cf5893e4709143924157a5c1eChris Lattner ELFDATANONE = 0, // Invalid data encoding. 15563094e0bb161580564954dee512955c1c79d3476Greg Clayton ELFDATA2LSB = 1, // Little-endian object file 15624943d2ee8bfaa7cf5893e4709143924157a5c1eChris Lattner ELFDATA2MSB = 2 // Big-endian object file 15724943d2ee8bfaa7cf5893e4709143924157a5c1eChris Lattner}; 15824943d2ee8bfaa7cf5893e4709143924157a5c1eChris Lattner 15924943d2ee8bfaa7cf5893e4709143924157a5c1eChris Lattner// OS ABI identification. 16024943d2ee8bfaa7cf5893e4709143924157a5c1eChris Lattnerenum { 16124943d2ee8bfaa7cf5893e4709143924157a5c1eChris Lattner ELFOSABI_NONE = 0, // UNIX System V ABI 16263094e0bb161580564954dee512955c1c79d3476Greg Clayton ELFOSABI_HPUX = 1, // HP-UX operating system 16324943d2ee8bfaa7cf5893e4709143924157a5c1eChris Lattner ELFOSABI_NETBSD = 2, // NetBSD 16424943d2ee8bfaa7cf5893e4709143924157a5c1eChris Lattner ELFOSABI_LINUX = 3, // GNU/Linux 16524943d2ee8bfaa7cf5893e4709143924157a5c1eChris Lattner ELFOSABI_HURD = 4, // GNU/Hurd 16624943d2ee8bfaa7cf5893e4709143924157a5c1eChris Lattner ELFOSABI_SOLARIS = 6, // Solaris 16724943d2ee8bfaa7cf5893e4709143924157a5c1eChris Lattner ELFOSABI_AIX = 7, // AIX 16824943d2ee8bfaa7cf5893e4709143924157a5c1eChris Lattner ELFOSABI_IRIX = 8, // IRIX 16924943d2ee8bfaa7cf5893e4709143924157a5c1eChris Lattner ELFOSABI_FREEBSD = 9, // FreeBSD 17024943d2ee8bfaa7cf5893e4709143924157a5c1eChris Lattner ELFOSABI_TRU64 = 10, // TRU64 UNIX 17163094e0bb161580564954dee512955c1c79d3476Greg Clayton ELFOSABI_MODESTO = 11, // Novell Modesto 17224943d2ee8bfaa7cf5893e4709143924157a5c1eChris Lattner ELFOSABI_OPENBSD = 12, // OpenBSD 17324943d2ee8bfaa7cf5893e4709143924157a5c1eChris Lattner ELFOSABI_OPENVMS = 13, // OpenVMS 17424943d2ee8bfaa7cf5893e4709143924157a5c1eChris Lattner ELFOSABI_NSK = 14, // Hewlett-Packard Non-Stop Kernel 17524943d2ee8bfaa7cf5893e4709143924157a5c1eChris Lattner ELFOSABI_AROS = 15, // AROS 17624943d2ee8bfaa7cf5893e4709143924157a5c1eChris Lattner ELFOSABI_FENIXOS = 16, // FenixOS 17724943d2ee8bfaa7cf5893e4709143924157a5c1eChris Lattner ELFOSABI_C6000_ELFABI = 64, // Bare-metal TMS320C6000 17824943d2ee8bfaa7cf5893e4709143924157a5c1eChris Lattner ELFOSABI_C6000_LINUX = 65, // Linux TMS320C6000 17963094e0bb161580564954dee512955c1c79d3476Greg Clayton ELFOSABI_ARM = 97, // ARM 18024943d2ee8bfaa7cf5893e4709143924157a5c1eChris Lattner ELFOSABI_STANDALONE = 255 // Standalone (embedded) application 18124943d2ee8bfaa7cf5893e4709143924157a5c1eChris Lattner}; 18224943d2ee8bfaa7cf5893e4709143924157a5c1eChris Lattner 18324943d2ee8bfaa7cf5893e4709143924157a5c1eChris Lattner// X86_64 relocations. 18424943d2ee8bfaa7cf5893e4709143924157a5c1eChris Lattnerenum { 18563094e0bb161580564954dee512955c1c79d3476Greg Clayton R_X86_64_NONE = 0, 18663094e0bb161580564954dee512955c1c79d3476Greg Clayton R_X86_64_64 = 1, 18724943d2ee8bfaa7cf5893e4709143924157a5c1eChris Lattner R_X86_64_PC32 = 2, 18824943d2ee8bfaa7cf5893e4709143924157a5c1eChris Lattner R_X86_64_GOT32 = 3, 18924943d2ee8bfaa7cf5893e4709143924157a5c1eChris Lattner R_X86_64_PLT32 = 4, 19024943d2ee8bfaa7cf5893e4709143924157a5c1eChris Lattner R_X86_64_COPY = 5, 19124943d2ee8bfaa7cf5893e4709143924157a5c1eChris Lattner R_X86_64_GLOB_DAT = 6, 19224943d2ee8bfaa7cf5893e4709143924157a5c1eChris Lattner R_X86_64_JUMP_SLOT = 7, 19363094e0bb161580564954dee512955c1c79d3476Greg Clayton R_X86_64_RELATIVE = 8, 19424943d2ee8bfaa7cf5893e4709143924157a5c1eChris Lattner R_X86_64_GOTPCREL = 9, 19524943d2ee8bfaa7cf5893e4709143924157a5c1eChris Lattner R_X86_64_32 = 10, 19624943d2ee8bfaa7cf5893e4709143924157a5c1eChris Lattner R_X86_64_32S = 11, 19724943d2ee8bfaa7cf5893e4709143924157a5c1eChris Lattner R_X86_64_16 = 12, 19824943d2ee8bfaa7cf5893e4709143924157a5c1eChris Lattner R_X86_64_PC16 = 13, 19963094e0bb161580564954dee512955c1c79d3476Greg Clayton R_X86_64_8 = 14, 20024943d2ee8bfaa7cf5893e4709143924157a5c1eChris Lattner R_X86_64_PC8 = 15, 20124943d2ee8bfaa7cf5893e4709143924157a5c1eChris Lattner R_X86_64_DTPMOD64 = 16, 2020baa394cd55c6dfb7a6259d215d0dea2b708067bGreg Clayton R_X86_64_DTPOFF64 = 17, 2030baa394cd55c6dfb7a6259d215d0dea2b708067bGreg Clayton R_X86_64_TPOFF64 = 18, 2040baa394cd55c6dfb7a6259d215d0dea2b708067bGreg Clayton R_X86_64_TLSGD = 19, 2050baa394cd55c6dfb7a6259d215d0dea2b708067bGreg Clayton R_X86_64_TLSLD = 20, 2060baa394cd55c6dfb7a6259d215d0dea2b708067bGreg Clayton R_X86_64_DTPOFF32 = 21, 2070baa394cd55c6dfb7a6259d215d0dea2b708067bGreg Clayton R_X86_64_GOTTPOFF = 22, 20824943d2ee8bfaa7cf5893e4709143924157a5c1eChris Lattner R_X86_64_TPOFF32 = 23, 20924943d2ee8bfaa7cf5893e4709143924157a5c1eChris Lattner R_X86_64_PC64 = 24, 21024943d2ee8bfaa7cf5893e4709143924157a5c1eChris Lattner R_X86_64_GOTOFF64 = 25, 21124943d2ee8bfaa7cf5893e4709143924157a5c1eChris Lattner R_X86_64_GOTPC32 = 26, 21224943d2ee8bfaa7cf5893e4709143924157a5c1eChris Lattner R_X86_64_SIZE32 = 32, 21363094e0bb161580564954dee512955c1c79d3476Greg Clayton R_X86_64_SIZE64 = 33, 21424943d2ee8bfaa7cf5893e4709143924157a5c1eChris Lattner R_X86_64_GOTPC32_TLSDESC = 34, 21524943d2ee8bfaa7cf5893e4709143924157a5c1eChris Lattner R_X86_64_TLSDESC_CALL = 35, 21698f930f429160f9777f626c3ac6aa609f4e965d2Caroline Tice R_X86_64_TLSDESC = 36 21798f930f429160f9777f626c3ac6aa609f4e965d2Caroline Tice}; 21898f930f429160f9777f626c3ac6aa609f4e965d2Caroline Tice 21998f930f429160f9777f626c3ac6aa609f4e965d2Caroline Tice// Section header. 22098f930f429160f9777f626c3ac6aa609f4e965d2Caroline Ticestruct Elf32_Shdr { 221bafc86e11a23ad23112f67a99e42aac7b0f207d7Greg Clayton Elf32_Word sh_name; // Section name (index into string table) 222bafc86e11a23ad23112f67a99e42aac7b0f207d7Greg Clayton Elf32_Word sh_type; // Section type (SHT_*) 22398f930f429160f9777f626c3ac6aa609f4e965d2Caroline Tice Elf32_Word sh_flags; // Section flags (SHF_*) 22498f930f429160f9777f626c3ac6aa609f4e965d2Caroline Tice Elf32_Addr sh_addr; // Address where section is to be loaded 22598f930f429160f9777f626c3ac6aa609f4e965d2Caroline Tice Elf32_Off sh_offset; // File offset of section data, in bytes 226bafc86e11a23ad23112f67a99e42aac7b0f207d7Greg Clayton Elf32_Word sh_size; // Size of section, in bytes 22798f930f429160f9777f626c3ac6aa609f4e965d2Caroline Tice Elf32_Word sh_link; // Section type-specific header table index link 22898f930f429160f9777f626c3ac6aa609f4e965d2Caroline Tice Elf32_Word sh_info; // Section type-specific extra information 22998f930f429160f9777f626c3ac6aa609f4e965d2Caroline Tice Elf32_Word sh_addralign; // Section address alignment 230bafc86e11a23ad23112f67a99e42aac7b0f207d7Greg Clayton Elf32_Word sh_entsize; // Size of records contained within the section 2317826c8894803dc729f29789ebc038956a94d3e7aCaroline Tice}; 2327826c8894803dc729f29789ebc038956a94d3e7aCaroline Tice 2337826c8894803dc729f29789ebc038956a94d3e7aCaroline Tice// Section header for ELF64 - same fields as ELF32, different types. 234struct Elf64_Shdr { 235 Elf64_Half sh_name; 236 Elf64_Half sh_type; 237 Elf64_Xword sh_flags; 238 Elf64_Addr sh_addr; 239 Elf64_Off sh_offset; 240 Elf64_Xword sh_size; 241 Elf64_Half sh_link; 242 Elf64_Half sh_info; 243 Elf64_Xword sh_addralign; 244 Elf64_Xword sh_entsize; 245}; 246 247// Special section indices. 248enum { 249 SHN_UNDEF = 0, // Undefined, missing, irrelevant, or meaningless 250 SHN_LORESERVE = 0xff00, // Lowest reserved index 251 SHN_LOPROC = 0xff00, // Lowest processor-specific index 252 SHN_HIPROC = 0xff1f, // Highest processor-specific index 253 SHN_ABS = 0xfff1, // Symbol has absolute value; does not need relocation 254 SHN_COMMON = 0xfff2, // FORTRAN COMMON or C external global variables 255 SHN_HIRESERVE = 0xffff // Highest reserved index 256}; 257 258// Section types. 259enum { 260 SHT_NULL = 0, // No associated section (inactive entry). 261 SHT_PROGBITS = 1, // Program-defined contents. 262 SHT_SYMTAB = 2, // Symbol table. 263 SHT_STRTAB = 3, // String table. 264 SHT_RELA = 4, // Relocation entries; explicit addends. 265 SHT_HASH = 5, // Symbol hash table. 266 SHT_DYNAMIC = 6, // Information for dynamic linking. 267 SHT_NOTE = 7, // Information about the file. 268 SHT_NOBITS = 8, // Data occupies no space in the file. 269 SHT_REL = 9, // Relocation entries; no explicit addends. 270 SHT_SHLIB = 10, // Reserved. 271 SHT_DYNSYM = 11, // Symbol table. 272 SHT_LOPROC = 0x70000000, // Lowest processor architecture-specific type. 273 SHT_HIPROC = 0x7fffffff, // Highest processor architecture-specific type. 274 SHT_LOUSER = 0x80000000, // Lowest type reserved for applications. 275 SHT_HIUSER = 0xffffffff // Highest type reserved for applications. 276}; 277 278// Section flags. 279enum { 280 SHF_WRITE = 0x1, // Section data should be writable during execution. 281 SHF_ALLOC = 0x2, // Section occupies memory during program execution. 282 SHF_EXECINSTR = 0x4, // Section contains executable machine instructions. 283 SHF_MASKPROC = 0xf0000000 // Bits indicating processor-specific flags. 284}; 285 286// Symbol table entries for ELF32. 287struct Elf32_Sym { 288 Elf32_Word st_name; // Symbol name (index into string table) 289 Elf32_Addr st_value; // Value or address associated with the symbol 290 Elf32_Word st_size; // Size of the symbol 291 unsigned char st_info; // Symbol's type and binding attributes 292 unsigned char st_other; // Must be zero; reserved 293 Elf32_Half st_shndx; // Which section (header table index) it's defined in 294 295 // These accessors and mutators correspond to the ELF32_ST_BIND, 296 // ELF32_ST_TYPE, and ELF32_ST_INFO macros defined in the ELF specification: 297 unsigned char getBinding() const { return st_info >> 4; } 298 unsigned char getType() const { return st_info & 0x0f; } 299 void setBinding(unsigned char b) { setBindingAndType(b, getType()); } 300 void setType(unsigned char t) { setBindingAndType(getBinding(), t); } 301 void setBindingAndType(unsigned char b, unsigned char t) { 302 st_info = (b << 4) + (t & 0x0f); 303 } 304}; 305 306// Symbol table entries for ELF64. 307struct Elf64_Sym { 308 Elf64_Word st_name; // Symbol name (index into string table) 309 unsigned char st_info; // Symbol's type and binding attributes 310 unsigned char st_other; // Must be zero; reserved 311 Elf64_Half st_shndx; // Which section (header table index) it's defined in 312 Elf64_Addr st_value; // Value or address associated with the symbol 313 Elf64_Xword st_size; // Size of the symbol 314 315 // These accessors and mutators are identical to those defined for ELF32 316 // symbol table entries. 317 unsigned char getBinding() const { return st_info >> 4; } 318 unsigned char getType() const { return st_info & 0x0f; } 319 void setBinding(unsigned char b) { setBindingAndType(b, getType()); } 320 void setType(unsigned char t) { setBindingAndType(getBinding(), t); } 321 void setBindingAndType(unsigned char b, unsigned char t) { 322 st_info = (b << 4) + (t & 0x0f); 323 } 324}; 325 326// Symbol bindings. 327enum { 328 STB_LOCAL = 0, // Local symbol, not visible outside obj file containing def 329 STB_GLOBAL = 1, // Global symbol, visible to all object files being combined 330 STB_WEAK = 2, // Weak symbol, like global but lower-precedence 331 STB_LOPROC = 13, // Lowest processor-specific binding type 332 STB_HIPROC = 15 // Highest processor-specific binding type 333}; 334 335// Symbol types. 336enum { 337 STT_NOTYPE = 0, // Symbol's type is not specified 338 STT_OBJECT = 1, // Symbol is a data object (variable, array, etc.) 339 STT_FUNC = 2, // Symbol is executable code (function, etc.) 340 STT_SECTION = 3, // Symbol refers to a section 341 STT_FILE = 4, // Local, absolute symbol that refers to a file 342 STT_LOPROC = 13, // Lowest processor-specific symbol type 343 STT_HIPROC = 15 // Highest processor-specific symbol type 344}; 345 346// Relocation entry, without explicit addend. 347struct Elf32_Rel { 348 Elf32_Addr r_offset; // Location (file byte offset, or program virtual addr) 349 Elf32_Word r_info; // Symbol table index and type of relocation to apply 350 351 // These accessors and mutators correspond to the ELF32_R_SYM, ELF32_R_TYPE, 352 // and ELF32_R_INFO macros defined in the ELF specification: 353 Elf32_Word getSymbol() const { return (r_info >> 8); } 354 unsigned char getType() const { return (unsigned char) (r_info & 0x0ff); } 355 void setSymbol(Elf32_Word s) { setSymbolAndType(s, getType()); } 356 void setType(unsigned char t) { setSymbolAndType(getSymbol(), t); } 357 void setSymbolAndType(Elf32_Word s, unsigned char t) { 358 r_info = (s << 8) + t; 359 }; 360}; 361 362// Relocation entry with explicit addend. 363struct Elf32_Rela { 364 Elf32_Addr r_offset; // Location (file byte offset, or program virtual addr) 365 Elf32_Word r_info; // Symbol table index and type of relocation to apply 366 Elf32_Sword r_addend; // Compute value for relocatable field by adding this 367 368 // These accessors and mutators correspond to the ELF32_R_SYM, ELF32_R_TYPE, 369 // and ELF32_R_INFO macros defined in the ELF specification: 370 Elf32_Word getSymbol() const { return (r_info >> 8); } 371 unsigned char getType() const { return (unsigned char) (r_info & 0x0ff); } 372 void setSymbol(Elf32_Word s) { setSymbolAndType(s, getType()); } 373 void setType(unsigned char t) { setSymbolAndType(getSymbol(), t); } 374 void setSymbolAndType(Elf32_Word s, unsigned char t) { 375 r_info = (s << 8) + t; 376 }; 377}; 378 379// Relocation entry, without explicit addend. 380struct Elf64_Rel { 381 Elf64_Addr r_offset; // Location (file byte offset, or program virtual addr). 382 Elf64_Xword r_info; // Symbol table index and type of relocation to apply. 383 384 // These accessors and mutators correspond to the ELF64_R_SYM, ELF64_R_TYPE, 385 // and ELF64_R_INFO macros defined in the ELF specification: 386 Elf64_Xword getSymbol() const { return (r_info >> 32); } 387 unsigned char getType() const { 388 return (unsigned char) (r_info & 0xffffffffL); 389 } 390 void setSymbol(Elf32_Word s) { setSymbolAndType(s, getType()); } 391 void setType(unsigned char t) { setSymbolAndType(getSymbol(), t); } 392 void setSymbolAndType(Elf64_Xword s, unsigned char t) { 393 r_info = (s << 32) + (t&0xffffffffL); 394 }; 395}; 396 397// Relocation entry with explicit addend. 398struct Elf64_Rela { 399 Elf64_Addr r_offset; // Location (file byte offset, or program virtual addr). 400 Elf64_Xword r_info; // Symbol table index and type of relocation to apply. 401 Elf64_Sxword r_addend; // Compute value for relocatable field by adding this. 402 403 // These accessors and mutators correspond to the ELF64_R_SYM, ELF64_R_TYPE, 404 // and ELF64_R_INFO macros defined in the ELF specification: 405 Elf64_Xword getSymbol() const { return (r_info >> 32); } 406 unsigned char getType() const { 407 return (unsigned char) (r_info & 0xffffffffL); 408 } 409 void setSymbol(Elf64_Xword s) { setSymbolAndType(s, getType()); } 410 void setType(unsigned char t) { setSymbolAndType(getSymbol(), t); } 411 void setSymbolAndType(Elf64_Xword s, unsigned char t) { 412 r_info = (s << 32) + (t&0xffffffffL); 413 }; 414}; 415 416// Program header for ELF32. 417struct Elf32_Phdr { 418 Elf32_Word p_type; // Type of segment 419 Elf32_Off p_offset; // File offset where segment is located, in bytes 420 Elf32_Addr p_vaddr; // Virtual address of beginning of segment 421 Elf32_Addr p_paddr; // Physical address of beginning of segment (OS-specific) 422 Elf32_Word p_filesz; // Num. of bytes in file image of segment (may be zero) 423 Elf32_Word p_memsz; // Num. of bytes in mem image of segment (may be zero) 424 Elf32_Word p_flags; // Segment flags 425 Elf32_Word p_align; // Segment alignment constraint 426}; 427 428// Program header for ELF64. 429struct Elf64_Phdr { 430 Elf64_Word p_type; // Type of segment 431 Elf64_Word p_flags; // Segment flags 432 Elf64_Off p_offset; // File offset where segment is located, in bytes 433 Elf64_Addr p_vaddr; // Virtual address of beginning of segment 434 Elf64_Addr p_paddr; // Physical address of beginning of segment (OS-specific) 435 Elf64_Xword p_filesz; // Num. of bytes in file image of segment (may be zero) 436 Elf64_Xword p_memsz; // Num. of bytes in mem image of segment (may be zero) 437 Elf64_Xword p_align; // Segment alignment constraint 438}; 439 440// Segment types. 441enum { 442 PT_NULL = 0, // Unused segment. 443 PT_LOAD = 1, // Loadable segment. 444 PT_DYNAMIC = 2, // Dynamic linking information. 445 PT_INTERP = 3, // Interpreter pathname. 446 PT_NOTE = 4, // Auxiliary information. 447 PT_SHLIB = 5, // Reserved. 448 PT_PHDR = 6, // The program header table itself. 449 PT_LOPROC = 0x70000000, // Lowest processor-specific program hdr entry type. 450 PT_HIPROC = 0x7fffffff // Highest processor-specific program hdr entry type. 451}; 452 453// Segment flag bits. 454enum { 455 PF_X = 1, // Execute 456 PF_W = 2, // Write 457 PF_R = 4, // Read 458 PF_MASKPROC = 0xf0000000 // Unspecified 459}; 460 461// Dynamic table entry for ELF32. 462struct Elf32_Dyn 463{ 464 Elf32_Sword d_tag; // Type of dynamic table entry. 465 union 466 { 467 Elf32_Word d_val; // Integer value of entry. 468 Elf32_Addr d_ptr; // Pointer value of entry. 469 } d_un; 470}; 471 472// Dynamic table entry for ELF64. 473struct Elf64_Dyn 474{ 475 Elf64_Sxword d_tag; // Type of dynamic table entry. 476 union 477 { 478 Elf64_Xword d_val; // Integer value of entry. 479 Elf64_Addr d_ptr; // Pointer value of entry. 480 } d_un; 481}; 482 483// Dynamic table entry tags. 484enum { 485 DT_NULL = 0, // Marks end of dynamic array. 486 DT_NEEDED = 1, // String table offset of needed library. 487 DT_PLTRELSZ = 2, // Size of relocation entries in PLT. 488 DT_PLTGOT = 3, // Address associated with linkage table. 489 DT_HASH = 4, // Address of symbolic hash table. 490 DT_STRTAB = 5, // Address of dynamic string table. 491 DT_SYMTAB = 6, // Address of dynamic symbol table. 492 DT_RELA = 7, // Address of relocation table (Rela entries). 493 DT_RELASZ = 8, // Size of Rela relocation table. 494 DT_RELAENT = 9, // Size of a Rela relocation entry. 495 DT_STRSZ = 10, // Total size of the string table. 496 DT_SYMENT = 11, // Size of a symbol table entry. 497 DT_INIT = 12, // Address of initialization function. 498 DT_FINI = 13, // Address of termination function. 499 DT_SONAME = 14, // String table offset of a shared objects name. 500 DT_RPATH = 15, // String table offset of library search path. 501 DT_SYMBOLIC = 16, // Changes symbol resolution algorithm. 502 DT_REL = 17, // Address of relocation table (Rel entries). 503 DT_RELSZ = 18, // Size of Rel relocation table. 504 DT_RELENT = 19, // Size of a Rel relocation entry. 505 DT_PLTREL = 20, // Type of relocation entry used for linking. 506 DT_DEBUG = 21, // Reserved for debugger. 507 DT_TEXTREL = 22, // Relocations exist for non-writable segements. 508 DT_JMPREL = 23, // Address of relocations associated with PLT. 509 DT_BIND_NOW = 24, // Process all relocations before execution. 510 DT_INIT_ARRAY = 25, // Pointer to array of initialization functions. 511 DT_FINI_ARRAY = 26, // Pointer to array of termination functions. 512 DT_INIT_ARRAYSZ = 27, // Size of DT_INIT_ARRAY. 513 DT_FINI_ARRAYSZ = 28, // Size of DT_FINI_ARRAY. 514 DT_LOOS = 0x60000000, // Start of environment specific tags. 515 DT_HIOS = 0x6FFFFFFF, // End of environment specific tags. 516 DT_LOPROC = 0x70000000, // Start of processor specific tags. 517 DT_HIPROC = 0x7FFFFFFF // End of processor specific tags. 518}; 519 520} // end namespace ELF 521 522} // end namespace llvm 523 524#endif 525