1/* $OpenBSD: exec.h,v 1.1 2004/10/18 19:05:36 grange Exp $ */ 2 3/* 4 * Copyright (c) 1996-2004 Per Fogelstrom, Opsycon AB 5 * 6 * Redistribution and use in source and binary forms, with or without 7 * modification, are permitted provided that the following conditions 8 * are met: 9 * 1. Redistributions of source code must retain the above copyright 10 * notice, this list of conditions and the following disclaimer. 11 * 2. Redistributions in binary form must reproduce the above copyright 12 * notice, this list of conditions and the following disclaimer in the 13 * documentation and/or other materials provided with the distribution. 14 * 15 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS 16 * OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED 17 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 18 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY 19 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 20 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 21 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 22 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 23 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 24 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 25 * SUCH DAMAGE. 26 * 27 */ 28 29#ifndef _MIPS64_EXEC_H_ 30#define _MIPS64_EXEC_H_ 31 32#define __LDPGSZ 4096 33 34/* 35 * Define what exec "formats" we should handle. 36 */ 37#define NATIVE_EXEC_ELF 38#define NATIVE_ELFSIZE 64 39#define EXEC_SCRIPT 40 41/* 42 * If included from sys/exec.h define kernels ELF format. 43 */ 44#ifdef __LP64__ 45#define ARCH_ELFSIZE 64 46#define DB_ELFSIZE 64 47#define ELF_TARG_CLASS ELFCLASS64 48#else 49#define ARCH_ELFSIZE 32 50#define DB_ELFSIZE 32 51#define ELF_TARG_CLASS ELFCLASS32 52#endif 53 54#if defined(__MIPSEB__) 55#define ELF_TARG_DATA ELFDATA2MSB 56#else 57#define ELF_TARG_DATA ELFDATA2LSB 58#endif 59#define ELF_TARG_MACH EM_MIPS 60 61#define _NLIST_DO_ELF 62 63#if defined(_LP64) 64#define _KERN_DO_ELF64 65#if defined(COMPAT_O32) 66#define _KERN_DO_ELF 67#endif 68#else 69#define _KERN_DO_ELF 70#endif 71 72/* Information taken from MIPS ABI supplemental */ 73 74/* Architecture dependent Segment types - p_type */ 75#define PT_MIPS_REGINFO 0x70000000 /* Register usage information */ 76 77/* Architecture dependent d_tag field for Elf32_Dyn. */ 78#define DT_MIPS_RLD_VERSION 0x70000001 /* Runtime Linker Interface ID */ 79#define DT_MIPS_TIME_STAMP 0x70000002 /* Timestamp */ 80#define DT_MIPS_ICHECKSUM 0x70000003 /* Cksum of ext. str. and com. sizes */ 81#define DT_MIPS_IVERSION 0x70000004 /* Version string (string tbl index) */ 82#define DT_MIPS_FLAGS 0x70000005 /* Flags */ 83#define DT_MIPS_BASE_ADDRESS 0x70000006 /* Segment base address */ 84#define DT_MIPS_CONFLICT 0x70000008 /* Adr of .conflict section */ 85#define DT_MIPS_LIBLIST 0x70000009 /* Address of .liblist section */ 86#define DT_MIPS_LOCAL_GOTNO 0x7000000a /* Number of local .GOT entries */ 87#define DT_MIPS_CONFLICTNO 0x7000000b /* Number of .conflict entries */ 88#define DT_MIPS_LIBLISTNO 0x70000010 /* Number of .liblist entries */ 89#define DT_MIPS_SYMTABNO 0x70000011 /* Number of .dynsym entries */ 90#define DT_MIPS_UNREFEXTNO 0x70000012 /* First external DYNSYM */ 91#define DT_MIPS_GOTSYM 0x70000013 /* First GOT entry in .dynsym */ 92#define DT_MIPS_HIPAGENO 0x70000014 /* Number of GOT page table entries */ 93#define DT_MIPS_RLD_MAP 0x70000016 /* Address of debug map pointer */ 94 95#define DT_PROCNUM (DT_MIPS_RLD_MAP - DT_LOPROC + 1) 96 97/* 98 * Legal values for e_flags field of Elf32_Ehdr. 99 */ 100#define EF_MIPS_NOREORDER 0x00000001 /* .noreorder was used */ 101#define EF_MIPS_PIC 0x00000002 /* Contains PIC code */ 102#define EF_MIPS_CPIC 0x00000004 /* Uses PIC calling sequence */ 103#define EF_MIPS_ABI2 0x00000020 /* -n32 on Irix 6 */ 104#define EF_MIPS_32BITMODE 0x00000100 /* 64 bit in 32 bit mode... */ 105#define EF_MIPS_ARCH 0xf0000000 /* MIPS architecture level */ 106#define E_MIPS_ARCH_1 0x00000000 107#define E_MIPS_ARCH_2 0x10000000 108#define E_MIPS_ARCH_3 0x20000000 109#define E_MIPS_ARCH_4 0x30000000 110#define EF_MIPS_ABI 0x0000f000 /* ABI level */ 111#define E_MIPS_ABI_NONE 0x00000000 /* ABI level not set */ 112#define E_MIPS_ABI_O32 0x00001000 113#define E_MIPS_ABI_O64 0x00002000 114#define E_MIPS_ABI_EABI32 0x00004000 115#define E_MIPS_ABI_EABI64 0x00004000 116 117/* 118 * Mips special sections. 119 */ 120#define SHN_MIPS_ACOMMON 0xff00 /* Allocated common symbols */ 121#define SHN_MIPS_SCOMMON 0xff03 /* Small common symbols */ 122#define SHN_MIPS_SUNDEFINED 0xff04 /* Small undefined symbols */ 123 124/* 125 * Legal values for sh_type field of Elf32_Shdr. 126 */ 127#define SHT_MIPS_LIBLIST 0x70000000 /* Shared objects used in link */ 128#define SHT_MIPS_CONFLICT 0x70000002 /* Conflicting symbols */ 129#define SHT_MIPS_GPTAB 0x70000003 /* Global data area sizes */ 130#define SHT_MIPS_UCODE 0x70000004 /* Reserved for SGI/MIPS compilers */ 131#define SHT_MIPS_DEBUG 0x70000005 /* MIPS ECOFF debugging information */ 132#define SHT_MIPS_REGINFO 0x70000006 /* Register usage information */ 133 134/* 135 * Legal values for sh_flags field of Elf32_Shdr. 136 */ 137#define SHF_MIPS_GPREL 0x10000000 /* Must be part of global data area */ 138 139#if 0 140/* 141 * Entries found in sections of type SHT_MIPS_GPTAB. 142 */ 143typedef union { 144 struct { 145 Elf32_Word gt_current_g_value; /* -G val used in compilation */ 146 Elf32_Word gt_unused; /* Not used */ 147 } gt_header; /* First entry in section */ 148 struct { 149 Elf32_Word gt_g_value; /* If this val were used for -G */ 150 Elf32_Word gt_bytes; /* This many bytes would be used */ 151 } gt_entry; /* Subsequent entries in section */ 152} Elf32_gptab; 153 154/* 155 * Entry found in sections of type SHT_MIPS_REGINFO. 156 */ 157typedef struct { 158 Elf32_Word ri_gprmask; /* General registers used */ 159 Elf32_Word ri_cprmask[4]; /* Coprocessor registers used */ 160 Elf32_Sword ri_gp_value; /* $gp register value */ 161} Elf32_RegInfo; 162#endif 163 164 165/* 166 * Mips relocations. 167 */ 168 169#define R_MIPS_NONE 0 /* No reloc */ 170#define R_MIPS_16 1 /* Direct 16 bit */ 171#define R_MIPS_32 2 /* Direct 32 bit */ 172#define R_MIPS_REL32 3 /* PC relative 32 bit */ 173#define R_MIPS_26 4 /* Direct 26 bit shifted */ 174#define R_MIPS_HI16 5 /* High 16 bit */ 175#define R_MIPS_LO16 6 /* Low 16 bit */ 176#define R_MIPS_GPREL16 7 /* GP relative 16 bit */ 177#define R_MIPS_LITERAL 8 /* 16 bit literal entry */ 178#define R_MIPS_GOT16 9 /* 16 bit GOT entry */ 179#define R_MIPS_PC16 10 /* PC relative 16 bit */ 180#define R_MIPS_CALL16 11 /* 16 bit GOT entry for function */ 181#define R_MIPS_GPREL32 12 /* GP relative 32 bit */ 182 183#define R_MIPS_64 18 184 185#define R_MIPS_REL32_64 ((R_MIPS_64 << 8) | R_MIPS_REL32) 186 187 188#endif /* !_MIPS64_EXEC_H_ */ 189