155 lines
6.0 KiB
C
155 lines
6.0 KiB
C
/*-
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* Copyright (c) 1996-1997 John D. Polstra.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* $FreeBSD$
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*/
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#ifndef _MACHINE_ELF_H_
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#define _MACHINE_ELF_H_ 1
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/*
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* ELF definitions for the i386 architecture.
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*/
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#include <sys/elf32.h> /* Definitions common to all 32 bit architectures. */
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#if defined(__ELF_WORD_SIZE) && __ELF_WORD_SIZE == 64
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#include <sys/elf64.h> /* Definitions common to all 64 bit architectures. */
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#endif
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#ifndef __ELF_WORD_SIZE
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#define __ELF_WORD_SIZE 32 /* Used by <sys/elf_generic.h> */
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#endif
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#include <sys/elf_generic.h>
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#define ELF_ARCH EM_386
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#define ELF_MACHINE_OK(x) ((x) == EM_386 || (x) == EM_486)
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/*
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* Auxiliary vector entries for passing information to the interpreter.
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*
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* The i386 supplement to the SVR4 ABI specification names this "auxv_t",
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* but POSIX lays claim to all symbols ending with "_t".
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*/
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typedef struct { /* Auxiliary vector entry on initial stack */
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int a_type; /* Entry type. */
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union {
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long a_val; /* Integer value. */
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void *a_ptr; /* Address. */
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void (*a_fcn)(void); /* Function pointer (not used). */
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} a_un;
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} Elf32_Auxinfo;
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#if __ELF_WORD_SIZE == 64
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/* Fake for amd64 loader support */
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typedef struct {
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int fake;
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} Elf64_Auxinfo;
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#endif
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__ElfType(Auxinfo);
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/* Values for a_type. */
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#define AT_NULL 0 /* Terminates the vector. */
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#define AT_IGNORE 1 /* Ignored entry. */
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#define AT_EXECFD 2 /* File descriptor of program to load. */
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#define AT_PHDR 3 /* Program header of program already loaded. */
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#define AT_PHENT 4 /* Size of each program header entry. */
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#define AT_PHNUM 5 /* Number of program header entries. */
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#define AT_PAGESZ 6 /* Page size in bytes. */
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#define AT_BASE 7 /* Interpreter's base address. */
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#define AT_FLAGS 8 /* Flags (unused for i386). */
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#define AT_ENTRY 9 /* Where interpreter should transfer control. */
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/*
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* The following non-standard values are used for passing information
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* from John Polstra's testbed program to the dynamic linker. These
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* are expected to go away soon.
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*
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* Unfortunately, these overlap the Linux non-standard values, so they
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* must not be used in the same context.
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*/
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#define AT_BRK 10 /* Starting point for sbrk and brk. */
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#define AT_DEBUG 11 /* Debugging level. */
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/*
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* The following non-standard values are used in Linux ELF binaries.
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*/
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#define AT_NOTELF 10 /* Program is not ELF ?? */
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#define AT_UID 11 /* Real uid. */
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#define AT_EUID 12 /* Effective uid. */
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#define AT_GID 13 /* Real gid. */
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#define AT_EGID 14 /* Effective gid. */
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#define AT_COUNT 15 /* Count of defined aux entry types. */
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/*
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* Relocation types.
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*/
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#define R_386_NONE 0 /* No relocation. */
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#define R_386_32 1 /* Add symbol value. */
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#define R_386_PC32 2 /* Add PC-relative symbol value. */
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#define R_386_GOT32 3 /* Add PC-relative GOT offset. */
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#define R_386_PLT32 4 /* Add PC-relative PLT offset. */
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#define R_386_COPY 5 /* Copy data from shared object. */
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#define R_386_GLOB_DAT 6 /* Set GOT entry to data address. */
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#define R_386_JMP_SLOT 7 /* Set GOT entry to code address. */
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#define R_386_RELATIVE 8 /* Add load address of shared object. */
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#define R_386_GOTOFF 9 /* Add GOT-relative symbol address. */
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#define R_386_GOTPC 10 /* Add PC-relative GOT table address. */
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#define R_386_TLS_TPOFF 14 /* Negative offset in static TLS block */
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#define R_386_TLS_IE 15 /* Absolute address of GOT for -ve static TLS */
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#define R_386_TLS_GOTIE 16 /* GOT entry for negative static TLS block */
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#define R_386_TLS_LE 17 /* Negative offset relative to static TLS */
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#define R_386_TLS_GD 18 /* 32 bit offset to GOT (index,off) pair */
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#define R_386_TLS_LDM 19 /* 32 bit offset to GOT (index,zero) pair */
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#define R_386_TLS_GD_32 24 /* 32 bit offset to GOT (index,off) pair */
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#define R_386_TLS_GD_PUSH 25 /* pushl instruction for Sun ABI GD sequence */
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#define R_386_TLS_GD_CALL 26 /* call instruction for Sun ABI GD sequence */
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#define R_386_TLS_GD_POP 27 /* popl instruction for Sun ABI GD sequence */
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#define R_386_TLS_LDM_32 28 /* 32 bit offset to GOT (index,zero) pair */
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#define R_386_TLS_LDM_PUSH 29 /* pushl instruction for Sun ABI LD sequence */
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#define R_386_TLS_LDM_CALL 30 /* call instruction for Sun ABI LD sequence */
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#define R_386_TLS_LDM_POP 31 /* popl instruction for Sun ABI LD sequence */
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#define R_386_TLS_LDO_32 32 /* 32 bit offset from start of TLS block */
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#define R_386_TLS_IE_32 33 /* 32 bit offset to GOT static TLS offset entry */
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#define R_386_TLS_LE_32 34 /* 32 bit offset within static TLS block */
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#define R_386_TLS_DTPMOD32 35 /* GOT entry containing TLS index */
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#define R_386_TLS_DTPOFF32 36 /* GOT entry containing TLS offset */
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#define R_386_TLS_TPOFF32 37 /* GOT entry of -ve static TLS offset */
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#define R_386_COUNT 38 /* Count of defined relocation types. */
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/* Define "machine" characteristics */
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#define ELF_TARG_CLASS ELFCLASS32
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#define ELF_TARG_DATA ELFDATA2LSB
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#define ELF_TARG_MACH EM_386
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#define ELF_TARG_VER 1
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#endif /* !_MACHINE_ELF_H_ */
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