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: src/sys/i386/include/elf.h,v 1.16 2004/08/02 19:12:17 dfr 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 #ifdef _REACTOS_ELF_MACHINE_IS_TARGET 37 38 #ifndef __ELF_WORD_SIZE 39 #define __ELF_WORD_SIZE 32 /* Used by <elf/generic.h> */ 40 #endif 41 42 #include <elf/generic.h> 43 44 #define ELF_ARCH EM_386 45 46 #define ELF_MACHINE_OK(x) ((x) == EM_386 || (x) == EM_486) 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 55 typedef struct { /* Auxiliary vector entry on initial stack */ 56 int a_type; /* Entry type. */ 57 union { 58 long a_val; /* Integer value. */ 59 void *a_ptr; /* Address. */ 60 void (*a_fcn)(void); /* Function pointer (not used). */ 61 } a_un; 62 } Elf32_Auxinfo; 63 64 #if __ELF_WORD_SIZE == 64 65 /* Fake for amd64 loader support */ 66 typedef struct { 67 int fake; 68 } Elf64_Auxinfo; 69 #endif 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 /* Define "machine" characteristics */ 108 #define ELF_TARG_CLASS ELFCLASS32 109 #define ELF_TARG_DATA ELFDATA2LSB 110 #define ELF_TARG_MACH EM_386 111 #define ELF_TARG_VER 1 112 113 #endif /* _REACTOS_ELF_MACHINE_IS_TARGET */ 114 115 /* 116 * Relocation types. 117 */ 118 119 #define R_386_NONE 0 /* No relocation. */ 120 #define R_386_32 1 /* Add symbol value. */ 121 #define R_386_PC32 2 /* Add PC-relative symbol value. */ 122 #define R_386_GOT32 3 /* Add PC-relative GOT offset. */ 123 #define R_386_PLT32 4 /* Add PC-relative PLT offset. */ 124 #define R_386_COPY 5 /* Copy data from shared object. */ 125 #define R_386_GLOB_DAT 6 /* Set GOT entry to data address. */ 126 #define R_386_JMP_SLOT 7 /* Set GOT entry to code address. */ 127 #define R_386_RELATIVE 8 /* Add load address of shared object. */ 128 #define R_386_GOTOFF 9 /* Add GOT-relative symbol address. */ 129 #define R_386_GOTPC 10 /* Add PC-relative GOT table address. */ 130 #define R_386_TLS_TPOFF 14 /* Negative offset in static TLS block */ 131 #define R_386_TLS_IE 15 /* Absolute address of GOT for -ve static TLS */ 132 #define R_386_TLS_GOTIE 16 /* GOT entry for negative static TLS block */ 133 #define R_386_TLS_LE 17 /* Negative offset relative to static TLS */ 134 #define R_386_TLS_GD 18 /* 32 bit offset to GOT (index,off) pair */ 135 #define R_386_TLS_LDM 19 /* 32 bit offset to GOT (index,zero) pair */ 136 #define R_386_TLS_GD_32 24 /* 32 bit offset to GOT (index,off) pair */ 137 #define R_386_TLS_GD_PUSH 25 /* pushl instruction for Sun ABI GD sequence */ 138 #define R_386_TLS_GD_CALL 26 /* call instruction for Sun ABI GD sequence */ 139 #define R_386_TLS_GD_POP 27 /* popl instruction for Sun ABI GD sequence */ 140 #define R_386_TLS_LDM_32 28 /* 32 bit offset to GOT (index,zero) pair */ 141 #define R_386_TLS_LDM_PUSH 29 /* pushl instruction for Sun ABI LD sequence */ 142 #define R_386_TLS_LDM_CALL 30 /* call instruction for Sun ABI LD sequence */ 143 #define R_386_TLS_LDM_POP 31 /* popl instruction for Sun ABI LD sequence */ 144 #define R_386_TLS_LDO_32 32 /* 32 bit offset from start of TLS block */ 145 #define R_386_TLS_IE_32 33 /* 32 bit offset to GOT static TLS offset entry */ 146 #define R_386_TLS_LE_32 34 /* 32 bit offset within static TLS block */ 147 #define R_386_TLS_DTPMOD32 35 /* GOT entry containing TLS index */ 148 #define R_386_TLS_DTPOFF32 36 /* GOT entry containing TLS offset */ 149 #define R_386_TLS_TPOFF32 37 /* GOT entry of -ve static TLS offset */ 150 151 #define R_386_COUNT 38 /* Count of defined relocation types. */ 152 153 #endif /* !_MACHINE_ELF_H_ */ 154