| 1 | /*-
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| 2 | * Copyright (c) 1996-1997 John D. Polstra.
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| 3 | * All rights reserved.
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| 4 | *
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| 5 | * Redistribution and use in source and binary forms, with or without
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| 6 | * modification, are permitted provided that the following conditions
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| 7 | * are met:
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| 8 | * 1. Redistributions of source code must retain the above copyright
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| 9 | * notice, this list of conditions and the following disclaimer.
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| 10 | * 2. Redistributions in binary form must reproduce the above copyright
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| 11 | * notice, this list of conditions and the following disclaimer in the
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| 12 | * documentation and/or other materials provided with the distribution.
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| 13 | *
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| 14 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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| 15 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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| 16 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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| 17 | * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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| 18 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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| 19 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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| 20 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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| 21 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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| 22 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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| 23 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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| 24 | * SUCH DAMAGE.
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| 25 | *
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| 26 | * $FreeBSD: src/sys/i386/include/elf.h,v 1.21 2010/08/17 08:55:45 kib Exp $
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| 27 | */
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| 28 |
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| 29 | #ifndef _MACHINE_ELF_H_
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| 30 | #define _MACHINE_ELF_H_ 1
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| 31 |
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| 32 | /*
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| 33 | * ELF definitions for the i386 architecture.
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| 34 | */
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| 35 |
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| 36 | #include <sys/elf32.h> /* Definitions common to all 32 bit architectures. */
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| 37 | #if defined(__ELF_WORD_SIZE) && __ELF_WORD_SIZE == 64
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| 38 | #include <sys/elf64.h> /* Definitions common to all 64 bit architectures. */
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| 39 | #endif
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| 40 |
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| 41 | #ifndef __ELF_WORD_SIZE
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| 42 | #define __ELF_WORD_SIZE 32 /* Used by <sys/elf_generic.h> */
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| 43 | #endif
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| 44 |
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| 45 | #include <sys/elf_generic.h>
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| 46 |
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| 47 | #define ELF_ARCH EM_386
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| 48 |
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| 49 | #define ELF_MACHINE_OK(x) ((x) == EM_386 || (x) == EM_486)
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| 50 |
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| 51 | /*
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| 52 | * Auxiliary vector entries for passing information to the interpreter.
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| 53 | *
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| 54 | * The i386 supplement to the SVR4 ABI specification names this "auxv_t",
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| 55 | * but POSIX lays claim to all symbols ending with "_t".
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| 56 | */
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| 57 |
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| 58 | typedef struct { /* Auxiliary vector entry on initial stack */
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| 59 | int a_type; /* Entry type. */
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| 60 | union {
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| 61 | long a_val; /* Integer value. */
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| 62 | void *a_ptr; /* Address. */
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| 63 | void (*a_fcn)(void); /* Function pointer (not used). */
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| 64 | } a_un;
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| 65 | } Elf32_Auxinfo;
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| 66 |
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| 67 | #if __ELF_WORD_SIZE == 64
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| 68 | /* Fake for amd64 loader support */
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| 69 | typedef struct {
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| 70 | int fake;
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| 71 | } Elf64_Auxinfo;
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| 72 | #endif
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| 73 |
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| 74 | __ElfType(Auxinfo);
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| 75 |
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| 76 | /* Values for a_type. */
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| 77 | #define AT_NULL 0 /* Terminates the vector. */
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| 78 | #define AT_IGNORE 1 /* Ignored entry. */
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| 79 | #define AT_EXECFD 2 /* File descriptor of program to load. */
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| 80 | #define AT_PHDR 3 /* Program header of program already loaded. */
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| 81 | #define AT_PHENT 4 /* Size of each program header entry. */
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| 82 | #define AT_PHNUM 5 /* Number of program header entries. */
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| 83 | #define AT_PAGESZ 6 /* Page size in bytes. */
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| 84 | #define AT_BASE 7 /* Interpreter's base address. */
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| 85 | #define AT_FLAGS 8 /* Flags (unused for i386). */
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| 86 | #define AT_ENTRY 9 /* Where interpreter should transfer control. */
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| 87 | #define AT_NOTELF 10 /* Program is not ELF ?? */
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| 88 | #define AT_UID 11 /* Real uid. */
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| 89 | #define AT_EUID 12 /* Effective uid. */
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| 90 | #define AT_GID 13 /* Real gid. */
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| 91 | #define AT_EGID 14 /* Effective gid. */
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| 92 | #define AT_EXECPATH 15 /* Path to the executable. */
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| 93 | #define AT_CANARY 16 /* Canary for SSP. */
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| 94 | #define AT_CANARYLEN 17 /* Length of the canary. */
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| 95 | #define AT_OSRELDATE 18 /* OSRELDATE. */
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| 96 | #define AT_NCPUS 19 /* Number of CPUs. */
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| 97 | #define AT_PAGESIZES 20 /* Pagesizes. */
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| 98 | #define AT_PAGESIZESLEN 21 /* Number of pagesizes. */
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| 99 |
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| 100 | #define AT_COUNT 22 /* Count of defined aux entry types. */
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| 101 |
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| 102 | /*
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| 103 | * Relocation types.
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| 104 | */
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| 105 |
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| 106 | #define R_386_COUNT 38 /* Count of defined relocation types. */
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| 107 |
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| 108 | /* Define "machine" characteristics */
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| 109 | #define ELF_TARG_CLASS ELFCLASS32
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| 110 | #define ELF_TARG_DATA ELFDATA2LSB
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| 111 | #define ELF_TARG_MACH EM_386
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| 112 | #define ELF_TARG_VER 1
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| 113 |
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| 114 | #define ET_DYN_LOAD_ADDR 0x01001000
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| 115 |
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| 116 | #endif /* !_MACHINE_ELF_H_ */
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