elf.h revision 84751
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: head/sys/ia64/include/elf.h 84751 2001-10-10 09:00:27Z dfr $ 27 */ 28 29#ifndef _MACHINE_ELF_H_ 30#define _MACHINE_ELF_H_ 1 31 32/* 33 * ELF definitions for the IA-64 architecture. 34 */ 35 36#include <sys/elf64.h> /* Definitions common to all 64 bit architectures. */ 37 38#define __ELF_WORD_SIZE 64 /* Used by <sys/elf_generic.h> */ 39#include <sys/elf_generic.h> 40 41#define ELF_ARCH EM_IA_64 42 43#define ELF_MACHINE_OK(x) ((x) == EM_IA_64) 44 45/* 46 * Auxiliary vector entries for passing information to the interpreter. 47 * 48 * The i386 supplement to the SVR4 ABI specification names this "auxv_t", 49 * but POSIX lays claim to all symbols ending with "_t". 50 */ 51 52typedef struct { /* Auxiliary vector entry on initial stack */ 53 int a_type; /* Entry type. */ 54 union { 55 long a_val; /* Integer value. */ 56 void *a_ptr; /* Address. */ 57 void (*a_fcn)(void); /* Function pointer (not used). */ 58 } a_un; 59} Elf64_Auxinfo; 60 61__ElfType(Auxinfo); 62 63/* 64 * Types of dynamic symbol hash table bucket and chain elements. 65 * 66 * This is inconsistent among 64 bit architectures, so a machine dependent 67 * typedef is required. 68 */ 69 70typedef Elf64_Off Elf64_Hashelt; 71 72__ElfType(Hashelt); 73 74/* Values for a_type. */ 75#define AT_NULL 0 /* Terminates the vector. */ 76#define AT_IGNORE 1 /* Ignored entry. */ 77#define AT_EXECFD 2 /* File descriptor of program to load. */ 78#define AT_PHDR 3 /* Program header of program already loaded. */ 79#define AT_PHENT 4 /* Size of each program header entry. */ 80#define AT_PHNUM 5 /* Number of program header entries. */ 81#define AT_PAGESZ 6 /* Page size in bytes. */ 82#define AT_BASE 7 /* Interpreter's base address. */ 83#define AT_FLAGS 8 /* Flags (unused for i386). */ 84#define AT_ENTRY 9 /* Where interpreter should transfer control. */ 85 86/* 87 * The following non-standard values are used for passing information 88 * from John Polstra's testbed program to the dynamic linker. These 89 * are expected to go away soon. 90 * 91 * Unfortunately, these overlap the Linux non-standard values, so they 92 * must not be used in the same context. 93 */ 94#define AT_BRK 10 /* Starting point for sbrk and brk. */ 95#define AT_DEBUG 11 /* Debugging level. */ 96 97/* 98 * The following non-standard values are used in Linux ELF binaries. 99 */ 100#define AT_NOTELF 10 /* Program is not ELF ?? */ 101#define AT_UID 11 /* Real uid. */ 102#define AT_EUID 12 /* Effective uid. */ 103#define AT_GID 13 /* Real gid. */ 104#define AT_EGID 14 /* Effective gid. */ 105 106#define AT_COUNT 15 /* Count of defined aux entry types. */ 107 108/* 109 * Values for e_flags. 110 */ 111#define EF_IA_64_MASKOS 0x00ff000f 112#define EF_IA_64_ABI64 0x00000010 113#define EF_IA_64_REDUCEDFP 0x00000020 114#define EF_IA_64_CONS_GP 0x00000040 115#define EF_IA_64_NOFUNCDESC_CONS_GP 0x00000080 116#define EF_IA_64_ABSOLUTE 0x00000100 117#define EF_IA_64_ARCH 0xff000000 118 119/* 120 * Section types. 121 */ 122#define SHT_IA_64_EXT 0x70000000 123#define SHT_IA_64_UNWIND 0x70000001 124#define SHT_IA_64_LOPSREG 0x78000000 125#define SHT_IA_64_HIPSREG 0x7fffffff 126 127/* 128 * Section attribute flags. 129 */ 130#define SHF_IA_64_SHORT 0x10000000 131#define SHF_IA_64_NORECOV 0x20000000 132 133/* 134 * Relocation types. 135 */ 136 137/* Name Value Field Calculation */ 138#define R_IA64_NONE 0 /* None */ 139#define R_IA64_IMM14 0x21 /* immediate14 S + A */ 140#define R_IA64_IMM22 0x22 /* immediate22 S + A */ 141#define R_IA64_IMM64 0x23 /* immediate64 S + A */ 142#define R_IA64_DIR32MSB 0x24 /* word32 MSB S + A */ 143#define R_IA64_DIR32LSB 0x25 /* word32 LSB S + A */ 144#define R_IA64_DIR64MSB 0x26 /* word64 MSB S + A */ 145#define R_IA64_DIR64LSB 0x27 /* word64 LSB S + A */ 146#define R_IA64_GPREL22 0x2a /* immediate22 @gprel(S + A) */ 147#define R_IA64_GPREL64I 0x2b /* immediate64 @gprel(S + A) */ 148#define R_IA64_GPREL64MSB 0x2e /* word64 MSB @gprel(S + A) */ 149#define R_IA64_GPREL64LSB 0x2f /* word64 LSB @gprel(S + A) */ 150#define R_IA64_LTOFF22 0x32 /* immediate22 @ltoff(S + A) */ 151#define R_IA64_LTOFF64I 0x33 /* immediate64 @ltoff(S + A) */ 152#define R_IA64_PLTOFF22 0x3a /* immediate22 @pltoff(S + A) */ 153#define R_IA64_PLTOFF64I 0x3b /* immediate64 @pltoff(S + A) */ 154#define R_IA64_PLTOFF64MSB 0x3e /* word64 MSB @pltoff(S + A) */ 155#define R_IA64_PLTOFF64LSB 0x3f /* word64 LSB @pltoff(S + A) */ 156#define R_IA64_FPTR64I 0x43 /* immediate64 @fptr(S + A) */ 157#define R_IA64_FPTR32MSB 0x44 /* word32 MSB @fptr(S + A) */ 158#define R_IA64_FPTR32LSB 0x45 /* word32 LSB @fptr(S + A) */ 159#define R_IA64_FPTR64MSB 0x46 /* word64 MSB @fptr(S + A) */ 160#define R_IA64_FPTR64LSB 0x47 /* word64 LSB @fptr(S + A) */ 161#define R_IA64_PCREL21B 0x49 /* immediate21 form1 S + A - P */ 162#define R_IA64_PCREL21M 0x4a /* immediate21 form2 S + A - P */ 163#define R_IA64_PCREL21F 0x4b /* immediate21 form3 S + A - P */ 164#define R_IA64_PCREL32MSB 0x4c /* word32 MSB S + A - P */ 165#define R_IA64_PCREL32LSB 0x4d /* word32 LSB S + A - P */ 166#define R_IA64_PCREL64MSB 0x4e /* word64 MSB S + A - P */ 167#define R_IA64_PCREL64LSB 0x4f /* word64 LSB S + A - P */ 168#define R_IA64_LTOFF_FPTR22 0x52 /* immediate22 @ltoff(@fptr(S + A)) */ 169#define R_IA64_LTOFF_FPTR64I 0x53 /* immediate64 @ltoff(@fptr(S + A)) */ 170#define R_IA64_LTOFF_FPTR32MSB 0x54 /* word32 MSB @ltoff(@fptr(S + A)) */ 171#define R_IA64_LTOFF_FPTR32LSB 0x55 /* word32 LSB @ltoff(@fptr(S + A)) */ 172#define R_IA64_LTOFF_FPTR64MSB 0x56 /* word64 MSB @ltoff(@fptr(S + A)) */ 173#define R_IA64_LTOFF_FPTR64LSB 0x57 /* word64 LSB @ltoff(@fptr(S + A)) */ 174#define R_IA64_SEGREL32MSB 0x5c /* word32 MSB @segrel(S + A) */ 175#define R_IA64_SEGREL32LSB 0x5d /* word32 LSB @segrel(S + A) */ 176#define R_IA64_SEGREL64MSB 0x5e /* word64 MSB @segrel(S + A) */ 177#define R_IA64_SEGREL64LSB 0x5f /* word64 LSB @segrel(S + A) */ 178#define R_IA64_SECREL32MSB 0x64 /* word32 MSB @secrel(S + A) */ 179#define R_IA64_SECREL32LSB 0x65 /* word32 LSB @secrel(S + A) */ 180#define R_IA64_SECREL64MSB 0x66 /* word64 MSB @secrel(S + A) */ 181#define R_IA64_SECREL64LSB 0x67 /* word64 LSB @secrel(S + A) */ 182#define R_IA64_REL32MSB 0x6c /* word32 MSB BD + A */ 183#define R_IA64_REL32LSB 0x6d /* word32 LSB BD + A */ 184#define R_IA64_REL64MSB 0x6e /* word64 MSB BD + A */ 185#define R_IA64_REL64LSB 0x6f /* word64 LSB BD + A */ 186#define R_IA64_LTV32MSB 0x74 /* word32 MSB S + A */ 187#define R_IA64_LTV32LSB 0x75 /* word32 LSB S + A */ 188#define R_IA64_LTV64MSB 0x76 /* word64 MSB S + A */ 189#define R_IA64_LTV64LSB 0x77 /* word64 LSB S + A */ 190#define R_IA64_IPLTMSB 0x80 /* function descriptor MSB special */ 191#define R_IA64_IPLTLSB 0x81 /* function descriptor LSB speciaal */ 192#define R_IA64_SUB 0x85 /* immediate64 A - S */ 193#define R_IA64_LTOFF22X 0x86 /* immediate22 special */ 194#define R_IA64_LDXMOV 0x87 /* immediate22 special */ 195 196/* Define "machine" characteristics */ 197#define ELF_TARG_CLASS ELFCLASS64 198#define ELF_TARG_DATA ELFDATA2LSB 199#define ELF_TARG_MACH EM_IA_64 200#define ELF_TARG_VER 1 201 202/* Processor specific dynmamic section tags. */ 203 204#define DT_IA64_PLT_RESERVE 0x70000000 205 206#ifdef _KERNEL 207 208/* 209 * On the ia64 we load the dynamic linker where a userland call 210 * to mmap(0, ...) would put it. The rationale behind this 211 * calculation is that it leaves room for the heap to grow to 212 * its maximum allowed size. 213 */ 214#define ELF_RTLD_ADDR(vmspace) \ 215 (round_page((vm_offset_t)(vmspace)->vm_daddr + MAXDSIZ)) 216 217#endif /* _KERNEL */ 218#endif /* !_MACHINE_ELF_H_ */ 219