1/*- 2 * Copyright (c) 1996-1997 John D. Polstra. 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 17 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 24 * SUCH DAMAGE. 25 * 26 * $FreeBSD$ 27 */ 28 29#ifndef _MACHINE_ELF_H_ 30#define _MACHINE_ELF_H_ 1 31 32#if defined(__i386__) || defined(_MACHINE_ELF_WANT_32BIT) 33 34/* 35 * ELF definitions for the i386 architecture. 36 */ 37 38#include <sys/elf32.h> /* Definitions common to all 32 bit architectures. */ 39#if defined(__ELF_WORD_SIZE) && __ELF_WORD_SIZE == 64 40#include <sys/elf64.h> /* Definitions common to all 64 bit architectures. */ 41#endif 42 43#ifndef __ELF_WORD_SIZE 44#define __ELF_WORD_SIZE 32 /* Used by <sys/elf_generic.h> */ 45#endif 46 47#include <sys/elf_generic.h> 48 49#define ELF_ARCH EM_386 50 51#define ELF_MACHINE_OK(x) ((x) == EM_386 || (x) == EM_486) 52 53/* 54 * Auxiliary vector entries for passing information to the interpreter. 55 * 56 * The i386 supplement to the SVR4 ABI specification names this "auxv_t", 57 * but POSIX lays claim to all symbols ending with "_t". 58 */ 59 60typedef struct { /* Auxiliary vector entry on initial stack */ 61 int a_type; /* Entry type. */ 62 union { 63 long a_val; /* Integer value. */ 64 void *a_ptr; /* Address. */ 65 void (*a_fcn)(void); /* Function pointer (not used). */ 66 } a_un; 67} Elf32_Auxinfo; 68 69#if __ELF_WORD_SIZE == 64 70/* Fake for amd64 loader support */ 71typedef struct { 72 int fake; 73} Elf64_Auxinfo; 74#endif 75 76__ElfType(Auxinfo); 77 78/* Values for a_type. */ 79#define AT_NULL 0 /* Terminates the vector. */ 80#define AT_IGNORE 1 /* Ignored entry. */ 81#define AT_EXECFD 2 /* File descriptor of program to load. */ 82#define AT_PHDR 3 /* Program header of program already loaded. */ 83#define AT_PHENT 4 /* Size of each program header entry. */ 84#define AT_PHNUM 5 /* Number of program header entries. */ 85#define AT_PAGESZ 6 /* Page size in bytes. */ 86#define AT_BASE 7 /* Interpreter's base address. */ 87#define AT_FLAGS 8 /* Flags (unused for i386). */ 88#define AT_ENTRY 9 /* Where interpreter should transfer control. */ 89#define AT_NOTELF 10 /* Program is not ELF ?? */ 90#define AT_UID 11 /* Real uid. */ 91#define AT_EUID 12 /* Effective uid. */ 92#define AT_GID 13 /* Real gid. */ 93#define AT_EGID 14 /* Effective gid. */ 94#define AT_EXECPATH 15 /* Path to the executable. */ 95#define AT_CANARY 16 /* Canary for SSP. */ 96#define AT_CANARYLEN 17 /* Length of the canary. */ 97#define AT_OSRELDATE 18 /* OSRELDATE. */ 98#define AT_NCPUS 19 /* Number of CPUs. */ 99#define AT_PAGESIZES 20 /* Pagesizes. */ 100#define AT_PAGESIZESLEN 21 /* Number of pagesizes. */ 101#define AT_TIMEKEEP 22 /* Pointer to timehands. */ 102#define AT_STACKPROT 23 /* Initial stack protection. */ 103 104#define AT_COUNT 24 /* Count of defined aux entry types. */ 105 106/* 107 * Relocation types. 108 */ 109 110#define R_386_COUNT 38 /* Count of defined relocation types. */ 111 112/* Define "machine" characteristics */ 113#define ELF_TARG_CLASS ELFCLASS32 114#define ELF_TARG_DATA ELFDATA2LSB 115#define ELF_TARG_MACH EM_386 116#define ELF_TARG_VER 1 117 118#define ET_DYN_LOAD_ADDR 0x01001000 119 120#elif defined(__amd64__) 121 122/* 123 * ELF definitions for the AMD64 architecture. 124 */ 125 126#ifndef __ELF_WORD_SIZE 127#define __ELF_WORD_SIZE 64 /* Used by <sys/elf_generic.h> */ 128#endif 129#include <sys/elf32.h> /* Definitions common to all 32 bit architectures. */ 130#include <sys/elf64.h> /* Definitions common to all 64 bit architectures. */ 131#include <sys/elf_generic.h> 132 133#define ELF_ARCH EM_X86_64 134#define ELF_ARCH32 EM_386 135 136#define ELF_MACHINE_OK(x) ((x) == EM_X86_64) 137 138/* 139 * Auxiliary vector entries for passing information to the interpreter. 140 * 141 * The i386 supplement to the SVR4 ABI specification names this "auxv_t", 142 * but POSIX lays claim to all symbols ending with "_t". 143 */ 144typedef struct { /* Auxiliary vector entry on initial stack */ 145 int a_type; /* Entry type. */ 146 union { 147 int a_val; /* Integer value. */ 148 } a_un; 149} Elf32_Auxinfo; 150 151 152typedef struct { /* Auxiliary vector entry on initial stack */ 153 long a_type; /* Entry type. */ 154 union { 155 long a_val; /* Integer value. */ 156 void *a_ptr; /* Address. */ 157 void (*a_fcn)(void); /* Function pointer (not used). */ 158 } a_un; 159} Elf64_Auxinfo; 160 161__ElfType(Auxinfo); 162 163/* Values for a_type. */ 164#define AT_NULL 0 /* Terminates the vector. */ 165#define AT_IGNORE 1 /* Ignored entry. */ 166#define AT_EXECFD 2 /* File descriptor of program to load. */ 167#define AT_PHDR 3 /* Program header of program already loaded. */ 168#define AT_PHENT 4 /* Size of each program header entry. */ 169#define AT_PHNUM 5 /* Number of program header entries. */ 170#define AT_PAGESZ 6 /* Page size in bytes. */ 171#define AT_BASE 7 /* Interpreter's base address. */ 172#define AT_FLAGS 8 /* Flags (unused for i386). */ 173#define AT_ENTRY 9 /* Where interpreter should transfer control. */ 174#define AT_NOTELF 10 /* Program is not ELF ?? */ 175#define AT_UID 11 /* Real uid. */ 176#define AT_EUID 12 /* Effective uid. */ 177#define AT_GID 13 /* Real gid. */ 178#define AT_EGID 14 /* Effective gid. */ 179#define AT_EXECPATH 15 /* Path to the executable. */ 180#define AT_CANARY 16 /* Canary for SSP */ 181#define AT_CANARYLEN 17 /* Length of the canary. */ 182#define AT_OSRELDATE 18 /* OSRELDATE. */ 183#define AT_NCPUS 19 /* Number of CPUs. */ 184#define AT_PAGESIZES 20 /* Pagesizes. */ 185#define AT_PAGESIZESLEN 21 /* Number of pagesizes. */ 186#define AT_TIMEKEEP 22 /* Pointer to timehands. */ 187#define AT_STACKPROT 23 /* Initial stack protection. */ 188 189#define AT_COUNT 24 /* Count of defined aux entry types. */ 190 191/* 192 * Relocation types. 193 */ 194 195#define R_X86_64_COUNT 24 /* Count of defined relocation types. */ 196 197/* Define "machine" characteristics */ 198#if __ELF_WORD_SIZE == 32 199#define ELF_TARG_CLASS ELFCLASS32 200#else 201#define ELF_TARG_CLASS ELFCLASS64 202#endif 203#define ELF_TARG_DATA ELFDATA2LSB 204#define ELF_TARG_MACH EM_X86_64 205#define ELF_TARG_VER 1 206 207#if __ELF_WORD_SIZE == 32 208#define ET_DYN_LOAD_ADDR 0x01001000 209#else 210#define ET_DYN_LOAD_ADDR 0x01021000 211#endif 212 213#endif /* __i386__, __amd64__ */ 214 215#endif /* !_MACHINE_ELF_H_ */ 216