/*- * Copyright (c) 1996-1997 John D. Polstra. * All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. * * $FreeBSD: src/sys/i386/include/elf.h,v 1.9.2.1 2001/11/03 01:41:08 ps Exp $ * $DragonFly: src/sys/i386/include/Attic/elf.h,v 1.6 2005/07/13 18:33:50 asmodai Exp $ */ #ifndef _MACHINE_ELF_H_ #define _MACHINE_ELF_H_ 1 /* * ELF definitions for the i386 architecture. */ #include /* Definitions common to all 32 bit architectures. */ #include /* Definitions common to all 64 bit architectures. */ #ifndef __ELF_WORD_SIZE #define __ELF_WORD_SIZE 32 /* Used by */ #endif #include #define ELF_ARCH EM_386 #define ELF_MACHINE_OK(x) ((x) == EM_386) /* * Auxiliary vector entries for passing information to the interpreter. * * The i386 supplement to the SVR4 ABI specification names this "auxv_t", * but POSIX lays claim to all symbols ending with "_t". */ typedef struct { /* Auxiliary vector entry on initial stack */ int a_type; /* Entry type. */ union { long a_val; /* Integer value. */ void *a_ptr; /* Address. */ void (*a_fcn)(void); /* Function pointer (not used). */ } a_un; } Elf32_Auxinfo; #if __ELF_WORD_SIZE == 64 /* Fake for amd64 loader support */ typedef struct { int fake; } Elf64_Auxinfo; #endif __ElfType(Auxinfo); /* Values for a_type. */ #define AT_NULL 0 /* Terminates the vector. */ #define AT_IGNORE 1 /* Ignored entry. */ #define AT_EXECFD 2 /* File descriptor of program to load. */ #define AT_PHDR 3 /* Program header of program already loaded. */ #define AT_PHENT 4 /* Size of each program header entry. */ #define AT_PHNUM 5 /* Number of program header entries. */ #define AT_PAGESZ 6 /* Page size in bytes. */ #define AT_BASE 7 /* Interpreter's base address. */ #define AT_FLAGS 8 /* Flags (unused for i386). */ #define AT_ENTRY 9 /* Where interpreter should transfer control. */ /* * The following non-standard values are used for passing information * from John Polstra's testbed program to the dynamic linker. These * are expected to go away soon. * * Unfortunately, these overlap the Linux non-standard values, so they * must not be used in the same context. */ #define AT_BRK 10 /* Starting point for sbrk and brk. */ #define AT_DEBUG 11 /* Debugging level. */ /* * The following non-standard values are used in Linux ELF binaries. */ #define AT_NOTELF 10 /* Program is not ELF ?? */ #define AT_UID 11 /* Real uid. */ #define AT_EUID 12 /* Effective uid. */ #define AT_GID 13 /* Real gid. */ #define AT_EGID 14 /* Effective gid. */ #define AT_COUNT 15 /* Count of defined aux entry types. */ /* * Relocation types. */ #define R_386_NONE 0 /* No relocation. */ #define R_386_32 1 /* Add symbol value. */ #define R_386_PC32 2 /* Add PC-relative symbol value. */ #define R_386_GOT32 3 /* Add PC-relative GOT offset. */ #define R_386_PLT32 4 /* Add PC-relative PLT offset. */ #define R_386_COPY 5 /* Copy data from shared object. */ #define R_386_GLOB_DAT 6 /* Set GOT entry to data address. */ #define R_386_JMP_SLOT 7 /* Set GOT entry to code address. */ #define R_386_RELATIVE 8 /* Add load address of shared object. */ #define R_386_GOTOFF 9 /* Add GOT-relative symbol address. */ #define R_386_GOTPC 10 /* Add PC-relative GOT table address. */ #define R_386_TLS_TPOFF 14 /* Negative offset in static TLS block */ #define R_386_TLS_IE 15 /* Absolute address of GOT for -ve static TLS */ #define R_386_TLS_GOTIE 16 /* GOT entry for negative static TLS block */ #define R_386_TLS_LE 17 /* Negative offset relative to static TLS */ #define R_386_TLS_GD 18 /* 32 bit offset to GOT (index,off) pair */ #define R_386_TLS_LDM 19 /* 32 bit offset to GOT (index,zero) pair */ #define R_386_TLS_GD_32 24 /* 32 bit offset to GOT (index,off) pair */ #define R_386_TLS_GD_PUSH 25 /* pushl instruction for Sun ABI GD sequence */ #define R_386_TLS_GD_CALL 26 /* call instruction for Sun ABI GD sequence */ #define R_386_TLS_GD_POP 27 /* popl instruction for Sun ABI GD sequence */ #define R_386_TLS_LDM_32 28 /* 32 bit offset to GOT (index,zero) pair */ #define R_386_TLS_LDM_PUSH 29 /* pushl instruction for Sun ABI LD sequence */ #define R_386_TLS_LDM_CALL 30 /* call instruction for Sun ABI LD sequence */ #define R_386_TLS_LDM_POP 31 /* popl instruction for Sun ABI LD sequence */ #define R_386_TLS_LDO_32 32 /* 32 bit offset from start of TLS block */ #define R_386_TLS_IE_32 33 /* 32 bit offset to GOT static TLS offset entry */ #define R_386_TLS_LE_32 34 /* 32 bit offset within static TLS block */ #define R_386_TLS_DTPMOD32 35 /* GOT entry containing TLS index */ #define R_386_TLS_DTPOFF32 36 /* GOT entry containing TLS offset */ #define R_386_TLS_TPOFF32 37 /* GOT entry of -ve static TLS offset */ #define R_386_COUNT 38 /* Count of defined relocation types. */ /* Define "machine" characteristics */ #define ELF_TARG_CLASS ELFCLASS32 #define ELF_TARG_DATA ELFDATA2LSB #define ELF_TARG_MACH EM_386 #define ELF_TARG_VER 1 #ifdef _KERNEL /* * On the i386 we load the dynamic linker where a userland call * to mmap(0, ...) would put it. The rationale behind this * calculation is that it leaves room for the heap to grow to * its maximum allowed size. */ #define ELF_RTLD_ADDR(vmspace) \ (round_page((vm_offset_t)(vmspace)->vm_daddr + maxdsiz)) #endif /* _KERNEL */ #endif /* !_MACHINE_ELF_H_ */