1 /* $OpenBSD: exec.h,v 1.4 2009/12/12 20:03:16 miod 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 16384 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 #define ARCH_ELFSIZE 64 45 #define DB_ELFSIZE 64 46 #define ELF_TARG_CLASS ELFCLASS64 47 48 #if defined(__MIPSEB__) 49 #define ELF_TARG_DATA ELFDATA2MSB 50 #else 51 #define ELF_TARG_DATA ELFDATA2LSB 52 #endif 53 #define ELF_TARG_MACH EM_MIPS 54 55 #define _NLIST_DO_ELF 56 57 #define _KERN_DO_ELF64 58 59 /* Information taken from MIPS ABI supplemental */ 60 61 /* Architecture dependent Segment types - p_type */ 62 #define PT_MIPS_REGINFO 0x70000000 /* Register usage information */ 63 64 /* Architecture dependent d_tag field for Elf32_Dyn. */ 65 #define DT_MIPS_RLD_VERSION 0x70000001 /* Runtime Linker Interface ID */ 66 #define DT_MIPS_TIME_STAMP 0x70000002 /* Timestamp */ 67 #define DT_MIPS_ICHECKSUM 0x70000003 /* Cksum of ext. str. and com. sizes */ 68 #define DT_MIPS_IVERSION 0x70000004 /* Version string (string tbl index) */ 69 #define DT_MIPS_FLAGS 0x70000005 /* Flags */ 70 #define DT_MIPS_BASE_ADDRESS 0x70000006 /* Segment base address */ 71 #define DT_MIPS_CONFLICT 0x70000008 /* Adr of .conflict section */ 72 #define DT_MIPS_LIBLIST 0x70000009 /* Address of .liblist section */ 73 #define DT_MIPS_LOCAL_GOTNO 0x7000000a /* Number of local .GOT entries */ 74 #define DT_MIPS_CONFLICTNO 0x7000000b /* Number of .conflict entries */ 75 #define DT_MIPS_LIBLISTNO 0x70000010 /* Number of .liblist entries */ 76 #define DT_MIPS_SYMTABNO 0x70000011 /* Number of .dynsym entries */ 77 #define DT_MIPS_UNREFEXTNO 0x70000012 /* First external DYNSYM */ 78 #define DT_MIPS_GOTSYM 0x70000013 /* First GOT entry in .dynsym */ 79 #define DT_MIPS_HIPAGENO 0x70000014 /* Number of GOT page table entries */ 80 #define DT_MIPS_RLD_MAP 0x70000016 /* Address of debug map pointer */ 81 82 #define DT_PROCNUM (DT_MIPS_RLD_MAP - DT_LOPROC + 1) 83 84 /* 85 * Legal values for e_flags field of Elf32_Ehdr. 86 */ 87 #define EF_MIPS_NOREORDER 0x00000001 /* .noreorder was used */ 88 #define EF_MIPS_PIC 0x00000002 /* Contains PIC code */ 89 #define EF_MIPS_CPIC 0x00000004 /* Uses PIC calling sequence */ 90 #define EF_MIPS_ABI2 0x00000020 /* -n32 on Irix 6 */ 91 #define EF_MIPS_32BITMODE 0x00000100 /* 64 bit in 32 bit mode... */ 92 #define EF_MIPS_ARCH 0xf0000000 /* MIPS architecture level */ 93 #define E_MIPS_ARCH_1 0x00000000 94 #define E_MIPS_ARCH_2 0x10000000 95 #define E_MIPS_ARCH_3 0x20000000 96 #define E_MIPS_ARCH_4 0x30000000 97 #define EF_MIPS_ABI 0x0000f000 /* ABI level */ 98 #define E_MIPS_ABI_NONE 0x00000000 /* ABI level not set */ 99 #define E_MIPS_ABI_O32 0x00001000 100 #define E_MIPS_ABI_O64 0x00002000 101 #define E_MIPS_ABI_EABI32 0x00004000 102 #define E_MIPS_ABI_EABI64 0x00004000 103 104 /* 105 * Mips special sections. 106 */ 107 #define SHN_MIPS_ACOMMON 0xff00 /* Allocated common symbols */ 108 #define SHN_MIPS_SCOMMON 0xff03 /* Small common symbols */ 109 #define SHN_MIPS_SUNDEFINED 0xff04 /* Small undefined symbols */ 110 111 /* 112 * Legal values for sh_type field of Elf32_Shdr. 113 */ 114 #define SHT_MIPS_LIBLIST 0x70000000 /* Shared objects used in link */ 115 #define SHT_MIPS_CONFLICT 0x70000002 /* Conflicting symbols */ 116 #define SHT_MIPS_GPTAB 0x70000003 /* Global data area sizes */ 117 #define SHT_MIPS_UCODE 0x70000004 /* Reserved for SGI/MIPS compilers */ 118 #define SHT_MIPS_DEBUG 0x70000005 /* MIPS ECOFF debugging information */ 119 #define SHT_MIPS_REGINFO 0x70000006 /* Register usage information */ 120 121 /* 122 * Legal values for sh_flags field of Elf32_Shdr. 123 */ 124 #define SHF_MIPS_GPREL 0x10000000 /* Must be part of global data area */ 125 126 #if 0 127 /* 128 * Entries found in sections of type SHT_MIPS_GPTAB. 129 */ 130 typedef union { 131 struct { 132 Elf32_Word gt_current_g_value; /* -G val used in compilation */ 133 Elf32_Word gt_unused; /* Not used */ 134 } gt_header; /* First entry in section */ 135 struct { 136 Elf32_Word gt_g_value; /* If this val were used for -G */ 137 Elf32_Word gt_bytes; /* This many bytes would be used */ 138 } gt_entry; /* Subsequent entries in section */ 139 } Elf32_gptab; 140 141 /* 142 * Entry found in sections of type SHT_MIPS_REGINFO. 143 */ 144 typedef struct { 145 Elf32_Word ri_gprmask; /* General registers used */ 146 Elf32_Word ri_cprmask[4]; /* Coprocessor registers used */ 147 Elf32_Sword ri_gp_value; /* $gp register value */ 148 } Elf32_RegInfo; 149 #endif 150 151 152 /* 153 * Mips relocations. 154 */ 155 156 #define R_MIPS_NONE 0 /* No reloc */ 157 #define R_MIPS_16 1 /* Direct 16 bit */ 158 #define R_MIPS_32 2 /* Direct 32 bit */ 159 #define R_MIPS_REL32 3 /* PC relative 32 bit */ 160 #define R_MIPS_26 4 /* Direct 26 bit shifted */ 161 #define R_MIPS_HI16 5 /* High 16 bit */ 162 #define R_MIPS_LO16 6 /* Low 16 bit */ 163 #define R_MIPS_GPREL16 7 /* GP relative 16 bit */ 164 #define R_MIPS_LITERAL 8 /* 16 bit literal entry */ 165 #define R_MIPS_GOT16 9 /* 16 bit GOT entry */ 166 #define R_MIPS_PC16 10 /* PC relative 16 bit */ 167 #define R_MIPS_CALL16 11 /* 16 bit GOT entry for function */ 168 #define R_MIPS_GPREL32 12 /* GP relative 32 bit */ 169 170 #define R_MIPS_64 18 171 172 #define R_MIPS_REL32_64 ((R_MIPS_64 << 8) | R_MIPS_REL32) 173 174 175 #endif /* !_MIPS64_EXEC_H_ */ 176