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 */ 143 typedef 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 */ 157 typedef 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