| 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 1.16 2004/08/02 19:12:17 dfr Exp $
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| 27 | */
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| 28 |
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| 29 | #ifndef __kLdrModELFi386_h__
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| 30 | #define __kLdrModELFi386_h__
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| 31 |
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| 32 | #if 0 /** @todo Auxiliary vector entries. */
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| 33 |
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| 34 | /*
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| 35 | * Auxiliary vector entries for passing information to the interpreter.
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| 36 | *
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| 37 | * The i386 supplement to the SVR4 ABI specification names this "auxv_t",
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| 38 | * but POSIX lays claim to all symbols ending with "_t".
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| 39 | */
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| 40 |
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| 41 | typedef struct { /* Auxiliary vector entry on initial stack */
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| 42 | int a_type; /* Entry type. */
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| 43 | union {
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| 44 | long a_val; /* Integer value. */
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| 45 | void *a_ptr; /* Address. */
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| 46 | void (*a_fcn)(void); /* Function pointer (not used). */
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| 47 | } a_un;
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| 48 | } Elf32_Auxinfo;
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| 49 |
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| 50 | #if __ELF_WORD_SIZE == 64
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| 51 | /* Fake for amd64 loader support */
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| 52 | typedef struct {
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| 53 | int fake;
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| 54 | } Elf64_Auxinfo;
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| 55 | #endif
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| 56 |
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| 57 | /* Values for a_type. */
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| 58 | #define AT_NULL 0 /* Terminates the vector. */
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| 59 | #define AT_IGNORE 1 /* Ignored entry. */
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| 60 | #define AT_EXECFD 2 /* File descriptor of program to load. */
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| 61 | #define AT_PHDR 3 /* Program header of program already loaded. */
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| 62 | #define AT_PHENT 4 /* Size of each program header entry. */
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| 63 | #define AT_PHNUM 5 /* Number of program header entries. */
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| 64 | #define AT_PAGESZ 6 /* Page size in bytes. */
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| 65 | #define AT_BASE 7 /* Interpreter's base address. */
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| 66 | #define AT_FLAGS 8 /* Flags (unused for i386). */
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| 67 | #define AT_ENTRY 9 /* Where interpreter should transfer control. */
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| 68 |
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| 69 | /*
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| 70 | * The following non-standard values are used for passing information
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| 71 | * from John Polstra's testbed program to the dynamic linker. These
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| 72 | * are expected to go away soon.
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| 73 | *
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| 74 | * Unfortunately, these overlap the Linux non-standard values, so they
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| 75 | * must not be used in the same context.
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| 76 | */
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| 77 | #define AT_BRK 10 /* Starting point for sbrk and brk. */
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| 78 | #define AT_DEBUG 11 /* Debugging level. */
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| 79 |
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| 80 | /*
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| 81 | * The following non-standard values are used in Linux ELF binaries.
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| 82 | */
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| 83 | #define AT_NOTELF 10 /* Program is not ELF ?? */
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| 84 | #define AT_UID 11 /* Real uid. */
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| 85 | #define AT_EUID 12 /* Effective uid. */
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| 86 | #define AT_GID 13 /* Real gid. */
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| 87 | #define AT_EGID 14 /* Effective gid. */
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| 88 |
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| 89 | #define AT_COUNT 15 /* Count of defined aux entry types. */
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| 90 |
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| 91 | #endif /* [todo] */
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| 92 |
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| 93 |
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| 94 | /*
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| 95 | * Relocation types.
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| 96 | */
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| 97 |
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| 98 | #define R_386_NONE 0 /* No relocation. */
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| 99 | #define R_386_32 1 /* Add symbol value. */
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| 100 | #define R_386_PC32 2 /* Add PC-relative symbol value. */
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| 101 | #define R_386_GOT32 3 /* Add PC-relative GOT offset. */
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| 102 | #define R_386_PLT32 4 /* Add PC-relative PLT offset. */
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| 103 | #define R_386_COPY 5 /* Copy data from shared object. */
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| 104 | #define R_386_GLOB_DAT 6 /* Set GOT entry to data address. */
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| 105 | #define R_386_JMP_SLOT 7 /* Set GOT entry to code address. */
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| 106 | #define R_386_RELATIVE 8 /* Add load address of shared object. */
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| 107 | #define R_386_GOTOFF 9 /* Add GOT-relative symbol address. */
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| 108 | #define R_386_GOTPC 10 /* Add PC-relative GOT table address. */
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| 109 | #define R_386_TLS_TPOFF 14 /* Negative offset in static TLS block */
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| 110 | #define R_386_TLS_IE 15 /* Absolute address of GOT for -ve static TLS */
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| 111 | #define R_386_TLS_GOTIE 16 /* GOT entry for negative static TLS block */
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| 112 | #define R_386_TLS_LE 17 /* Negative offset relative to static TLS */
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| 113 | #define R_386_TLS_GD 18 /* 32 bit offset to GOT (index,off) pair */
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| 114 | #define R_386_TLS_LDM 19 /* 32 bit offset to GOT (index,zero) pair */
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| 115 | #define R_386_TLS_GD_32 24 /* 32 bit offset to GOT (index,off) pair */
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| 116 | #define R_386_TLS_GD_PUSH 25 /* pushl instruction for Sun ABI GD sequence */
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| 117 | #define R_386_TLS_GD_CALL 26 /* call instruction for Sun ABI GD sequence */
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| 118 | #define R_386_TLS_GD_POP 27 /* popl instruction for Sun ABI GD sequence */
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| 119 | #define R_386_TLS_LDM_32 28 /* 32 bit offset to GOT (index,zero) pair */
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| 120 | #define R_386_TLS_LDM_PUSH 29 /* pushl instruction for Sun ABI LD sequence */
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| 121 | #define R_386_TLS_LDM_CALL 30 /* call instruction for Sun ABI LD sequence */
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| 122 | #define R_386_TLS_LDM_POP 31 /* popl instruction for Sun ABI LD sequence */
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| 123 | #define R_386_TLS_LDO_32 32 /* 32 bit offset from start of TLS block */
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| 124 | #define R_386_TLS_IE_32 33 /* 32 bit offset to GOT static TLS offset entry */
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| 125 | #define R_386_TLS_LE_32 34 /* 32 bit offset within static TLS block */
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| 126 | #define R_386_TLS_DTPMOD32 35 /* GOT entry containing TLS index */
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| 127 | #define R_386_TLS_DTPOFF32 36 /* GOT entry containing TLS offset */
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| 128 | #define R_386_TLS_TPOFF32 37 /* GOT entry of -ve static TLS offset */
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| 129 |
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| 130 | #define R_386_COUNT 38 /* Count of defined relocation types. */
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| 131 |
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| 132 | #endif
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| 133 |
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