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 /* 33 * ELF definitions for the AMD64 architecture. 34 */ 35 36 37 #ifndef __ELF_WORD_SIZE 38 #define __ELF_WORD_SIZE 64 /* Used by <sys/elf_generic.h> */ 39 #endif 40 #include <sys/elf32.h> /* Definitions common to all 32 bit architectures. */ 41 #include <sys/elf64.h> /* Definitions common to all 64 bit architectures. */ 42 #include <sys/elf_generic.h> 43 44 #define ELF_ARCH EM_X86_64 45 46 #define ELF_MACHINE_OK(x) ((x) == EM_X86_64) 47 48 /* 49 * Auxiliary vector entries for passing information to the interpreter. 50 * 51 * The i386 supplement to the SVR4 ABI specification names this "auxv_t", 52 * but POSIX lays claim to all symbols ending with "_t". 53 */ 54 typedef struct { /* Auxiliary vector entry on initial stack */ 55 int a_type; /* Entry type. */ 56 union { 57 int a_val; /* Integer value. */ 58 } a_un; 59 } Elf32_Auxinfo; 60 61 62 typedef struct { /* Auxiliary vector entry on initial stack */ 63 long a_type; /* Entry type. */ 64 union { 65 long a_val; /* Integer value. */ 66 void *a_ptr; /* Address. */ 67 void (*a_fcn)(void); /* Function pointer (not used). */ 68 } a_un; 69 } Elf64_Auxinfo; 70 71 __ElfType(Auxinfo); 72 73 /* Values for a_type. */ 74 #define AT_NULL 0 /* Terminates the vector. */ 75 #define AT_IGNORE 1 /* Ignored entry. */ 76 #define AT_EXECFD 2 /* File descriptor of program to load. */ 77 #define AT_PHDR 3 /* Program header of program already loaded. */ 78 #define AT_PHENT 4 /* Size of each program header entry. */ 79 #define AT_PHNUM 5 /* Number of program header entries. */ 80 #define AT_PAGESZ 6 /* Page size in bytes. */ 81 #define AT_BASE 7 /* Interpreter's base address. */ 82 #define AT_FLAGS 8 /* Flags (unused for i386). */ 83 #define AT_ENTRY 9 /* Where interpreter should transfer control. */ 84 85 /* 86 * The following non-standard values are used for passing information 87 * from John Polstra's testbed program to the dynamic linker. These 88 * are expected to go away soon. 89 * 90 * Unfortunately, these overlap the Linux non-standard values, so they 91 * must not be used in the same context. 92 */ 93 #define AT_BRK 10 /* Starting point for sbrk and brk. */ 94 #define AT_DEBUG 11 /* Debugging level. */ 95 96 /* 97 * The following non-standard values are used in Linux ELF binaries. 98 */ 99 #define AT_NOTELF 10 /* Program is not ELF ?? */ 100 #define AT_UID 11 /* Real uid. */ 101 #define AT_EUID 12 /* Effective uid. */ 102 #define AT_GID 13 /* Real gid. */ 103 #define AT_EGID 14 /* Effective gid. */ 104 105 #define AT_COUNT 15 /* Count of defined aux entry types. */ 106 107 /* 108 * Relocation types. 109 */ 110 111 #define R_X86_64_COUNT 24 /* Count of defined relocation types. */ 112 113 /* Define "machine" characteristics */ 114 #if __ELF_WORD_SIZE == 32 115 #define ELF_TARG_CLASS ELFCLASS32 116 #else 117 #define ELF_TARG_CLASS ELFCLASS64 118 #endif 119 #define ELF_TARG_DATA ELFDATA2LSB 120 #define ELF_TARG_MACH EM_X86_64 121 #define ELF_TARG_VER 1 122 123 #endif /* !_MACHINE_ELF_H_ */ 124