projects / deliverable / binutils-gdb.git / blame
| Commit | Line | Data |
|---|---|---|
| 2d996e5d JG |
1 | /* ELF support for BFD. |
| 2 | Copyright (C) 1991 Free Software Foundation, Inc. | |
| 3 | ||
| 4 | Written by Fred Fish @ Cygnus Support, from information published | |
| 5 | in "UNIX System V Release 4, Programmers Guide: ANSI C and | |
| 6 | Programming Support Tools". | |
| 7 | ||
| 8 | This file is part of BFD, the Binary File Descriptor library. | |
| 9 | ||
| 10 | This program is free software; you can redistribute it and/or modify | |
| 11 | it under the terms of the GNU General Public License as published by | |
| 12 | the Free Software Foundation; either version 2 of the License, or | |
| 13 | (at your option) any later version. | |
| 14 | ||
| 15 | This program is distributed in the hope that it will be useful, | |
| 16 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 17 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
| 18 | GNU General Public License for more details. | |
| 19 | ||
| 20 | You should have received a copy of the GNU General Public License | |
| 21 | along with this program; if not, write to the Free Software | |
| 22 | Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */ | |
| 23 | ||
| 24 | ||
| 25 | /* This file is part of ELF support for BFD, and contains the portions | |
| 26 | that are common to both the internal and external representations. | |
| 27 | For example, ELFMAG0 is the byte 0x7F in both the internal (in-memory) | |
| 28 | and external (in-file) representations. */ | |
| 29 | ||
| 30 | ||
| 31 | /* Fields in e_ident[] */ | |
| 32 | ||
| 33 | #define EI_MAG0 0 /* File identification byte 0 index */ | |
| 34 | #define ELFMAG0 0x7F /* Magic number byte 0 */ | |
| 35 | ||
| 36 | #define EI_MAG1 1 /* File identification byte 1 index */ | |
| 37 | #define ELFMAG1 'E' /* Magic number byte 1 */ | |
| 38 | ||
| 39 | #define EI_MAG2 2 /* File identification byte 2 index */ | |
| 40 | #define ELFMAG2 'L' /* Magic number byte 2 */ | |
| 41 | ||
| 42 | #define EI_MAG3 3 /* File identification byte 3 index */ | |
| 43 | #define ELFMAG3 'F' /* Magic number byte 3 */ | |
| 44 | ||
| 45 | #define EI_CLASS 4 /* File class */ | |
| 46 | #define ELFCLASSNONE 0 /* Invalid class */ | |
| 47 | #define ELFCLASS32 1 /* 32-bit objects */ | |
| 48 | #define ELFCLASS64 2 /* 64-bit objects */ | |
| 49 | ||
| 50 | #define EI_DATA 5 /* Data encoding */ | |
| 51 | #define ELFDATANONE 0 /* Invalid data encoding */ | |
| 52 | #define ELFDATA2LSB 1 /* 2's complement, little endian */ | |
| 53 | #define ELFDATA2MSB 2 /* 2's complement, big endian */ | |
| 54 | ||
| 55 | #define EI_VERSION 6 /* File version */ | |
| 56 | ||
| 57 | #define EI_PAD 7 /* Start of padding bytes */ | |
| 58 | ||
| 59 | ||
| 60 | /* Values for e_type, which identifies the object file type */ | |
| 61 | ||
| 62 | #define ET_NONE 0 /* No file type */ | |
| 63 | #define ET_REL 1 /* Relocatable file */ | |
| 64 | #define ET_EXEC 2 /* Executable file */ | |
| 65 | #define ET_DYN 3 /* Shared object file */ | |
| 66 | #define ET_CORE 4 /* Core file */ | |
| 67 | #define ET_LOPROC 0xFF00 /* Processor-specific */ | |
| 68 | #define ET_HIPROC 0xFFFF /* Processor-specific */ | |
| 69 | ||
| 70 | /* Values for e_machine, which identifies the architecture */ | |
| 71 | ||
| 72 | #define EM_NONE 0 /* No machine */ | |
| 73 | #define EM_M32 1 /* AT&T WE 32100 */ | |
| 74 | #define EM_SPARC 2 /* SUN SPARC */ | |
| 75 | #define EM_386 3 /* Intel 80386 */ | |
| 76 | #define EM_68K 4 /* Motorola m68k family */ | |
| 77 | #define EM_88K 5 /* Motorola m88k family */ | |
| 78 | #define EM_860 6 /* Intel 80860 */ | |
| 79 | ||
| 80 | /* Values for e_version */ | |
| 81 | ||
| 82 | #define EV_NONE 0 /* Invalid ELF version */ | |
| 83 | #define EV_CURRENT 1 /* Current version */ | |
| 84 | ||
| 85 | /* Values for program header, p_type field */ | |
| 86 | ||
| 87 | #define PT_NULL 0 /* Program header table entry unused */ | |
| 88 | #define PT_LOAD 1 /* Loadable program segment */ | |
| 89 | #define PT_DYNAMIC 2 /* Dynamic linking information */ | |
| 90 | #define PT_INTERP 3 /* Program interpreter */ | |
| 91 | #define PT_NOTE 4 /* Auxiliary information */ | |
| 92 | #define PT_SHLIB 5 /* Reserved, unspecified semantics */ | |
| 93 | #define PT_PHDR 6 /* Entry for header table itself */ | |
| 94 | #define PT_LOPROC 0x70000000 /* Processor-specific */ | |
| 95 | #define PT_HIPROC 0x7FFFFFFF /* Processor-specific */ | |
| 96 | ||
| 97 | /* Program segment permissions, in program header p_flags field */ | |
| 98 | ||
| 99 | #define PF_X (1 << 0) /* Segment is executable */ | |
| 100 | #define PF_W (1 << 1) /* Segment is writable */ | |
| 101 | #define PF_R (1 << 2) /* Segment is readable */ | |
| 102 | #define PF_MASKPROC 0xF0000000 /* Processor-specific reserved bits */ | |
| 103 | ||
| 104 | /* Values for section header, sh_type field */ | |
| 105 | ||
| 106 | #define SHT_NULL 0 /* Section header table entry unused */ | |
| 107 | #define SHT_PROGBITS 1 /* Program specific (private) data */ | |
| 108 | #define SHT_SYMTAB 2 /* Link editing symbol table */ | |
| 109 | #define SHT_STRTAB 3 /* A string table */ | |
| 110 | #define SHT_RELA 4 /* Relocation entries with addends */ | |
| 111 | #define SHT_HASH 5 /* A symbol hash table */ | |
| 112 | #define SHT_DYNAMIC 6 /* Information for dynamic linking */ | |
| 113 | #define SHT_NOTE 7 /* Information that marks file */ | |
| 114 | #define SHT_NOBITS 8 /* Section occupies no space in file */ | |
| 115 | #define SHT_REL 9 /* Relocation entries, no addends */ | |
| 116 | #define SHT_SHLIB 10 /* Reserved, unspecified semantics */ | |
| 117 | #define SHT_DYNSYM 11 /* Dynamic linking symbol table */ | |
| 118 | #define SHT_LOPROC 0x70000000 /* Processor-specific semantics, lo */ | |
| 119 | #define SHT_HIPROC 0x7FFFFFFF /* Processor-specific semantics, hi */ | |
| 120 | #define SHT_LOUSER 0x80000000 /* Application-specific semantics */ | |
| 121 | #define SHT_HIUSER 0x8FFFFFFF /* Application-specific semantics */ | |
| 122 | ||
| 123 | /* Values for section header, sh_flags field */ | |
| 124 | ||
| 125 | #define SHF_WRITE (1 << 0) /* Writable data during execution */ | |
| 126 | #define SHF_ALLOC (1 << 1) /* Occupies memory during execution */ | |
| 127 | #define SHF_EXECINSTR (1 << 2) /* Executable machine instructions */ | |
| 128 | #define SHF_MASKPROC 0xF0000000 /* Processor-specific semantics */ |