elf.h revision 28942
1233294Sstas/*- 255682Smarkm * Copyright (c) 1996-1997 John D. Polstra. 355682Smarkm * All rights reserved. 455682Smarkm * 572445Sassar * Redistribution and use in source and binary forms, with or without 655682Smarkm * modification, are permitted provided that the following conditions 772445Sassar * are met: 872445Sassar * 1. Redistributions of source code must retain the above copyright 972445Sassar * notice, this list of conditions and the following disclaimer. 1072445Sassar * 2. Redistributions in binary form must reproduce the above copyright 1155682Smarkm * notice, this list of conditions and the following disclaimer in the 1255682Smarkm * documentation and/or other materials provided with the distribution. 1355682Smarkm * 1455682Smarkm * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 1555682Smarkm * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 16178825Sdfr * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 1755682Smarkm * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 1855682Smarkm * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 19178825Sdfr * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 20233294Sstas * 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 * $Id: elf.h,v 1.1 1997/05/21 23:07:28 jdp Exp $ 27 */ 28 29#ifndef _MACHINE_ELF_H_ 30#define _MACHINE_ELF_H_ 1 31 32/* 33 * ELF definitions for the i386 architecture. 34 */ 35 36#include <sys/elf32.h> /* Definitions common to all 32 bit architectures. */ 37 38/* 39 * Auxiliary vector entries for passing information to the interpreter. 40 * 41 * The i386 supplement to the SVR4 ABI specification names this "auxv_t", 42 * but POSIX lays claim to all symbols ending with "_t". 43 */ 44 45typedef struct { /* Auxiliary vector entry on initial stack */ 46 int a_type; /* Entry type. */ 47 union { 48 long a_val; /* Integer value. */ 49 void *a_ptr; /* Address. */ 50 void (*a_fcn)(void); /* Function pointer (not used). */ 51 } a_un; 52} Elf32_Auxinfo; 53 54/* Values for a_type. */ 55#define AT_NULL 0 /* Terminates the vector. */ 56#define AT_IGNORE 1 /* Ignored entry. */ 57#define AT_EXECFD 2 /* File descriptor of program to load. */ 58#define AT_PHDR 3 /* Program header of program already loaded. */ 59#define AT_PHENT 4 /* Size of each program header entry. */ 60#define AT_PHNUM 5 /* Number of program header entries. */ 61#define AT_PAGESZ 6 /* Page size in bytes. */ 62#define AT_BASE 7 /* Interpreter's base address. */ 63#define AT_FLAGS 8 /* Flags (unused for i386). */ 64#define AT_ENTRY 9 /* Where interpreter should transfer control. */ 65 66/* 67 * The following non-standard values are used for passing information 68 * from John Polstra's testbed program to the dynamic linker. These 69 * are expected to go away soon. 70 * 71 * Unfortunately, these overlap the Linux non-standard values, so they 72 * must not be used in the same context. 73 */ 74#define AT_BRK 10 /* Starting point for sbrk and brk. */ 75#define AT_DEBUG 11 /* Debugging level. */ 76 77/* 78 * The following non-standard values are used in Linux ELF binaries. 79 */ 80#define AT_NOTELF 10 /* Program is not ELF ?? */ 81#define AT_UID 11 /* Real uid. */ 82#define AT_EUID 12 /* Effective uid. */ 83#define AT_GID 13 /* Real gid. */ 84#define AT_EGID 14 /* Effective gid. */ 85 86#define AT_COUNT 15 /* Count of defined aux entry types. */ 87 88/* 89 * Relocation types. 90 */ 91 92#define R_386_NONE 0 /* No relocation. */ 93#define R_386_32 1 /* Add symbol value. */ 94#define R_386_PC32 2 /* Add PC-relative symbol value. */ 95#define R_386_GOT32 3 /* Add PC-relative GOT offset. */ 96#define R_386_PLT32 4 /* Add PC-relative PLT offset. */ 97#define R_386_COPY 5 /* Copy data from shared object. */ 98#define R_386_GLOB_DAT 6 /* Set GOT entry to data address. */ 99#define R_386_JMP_SLOT 7 /* Set GOT entry to code address. */ 100#define R_386_RELATIVE 8 /* Add load address of shared object. */ 101#define R_386_GOTOFF 9 /* Add GOT-relative symbol address. */ 102#define R_386_GOTPC 10 /* Add PC-relative GOT table address. */ 103 104#define R_386_COUNT 11 /* Count of defined relocation types. */ 105 106/* Define "machine" characteristics */ 107#define ELF_TARG_CLASS ELFCLASS32 108#define ELF_TARG_DATA ELFDATA2LSB 109#define ELF_TARG_MACH EM_386 110#define ELF_TARG_VER 1 111 112#endif /* !_MACHINE_ELF_H_ */ 113