1 /* $OpenBSD: exec.h,v 1.7 2015/08/29 01:58:39 guenther 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 #define ARCH_ELFSIZE 64 35 #define ELF_TARG_CLASS ELFCLASS64 36 37 #if defined(__MIPSEB__) 38 #define ELF_TARG_DATA ELFDATA2MSB 39 #else 40 #define ELF_TARG_DATA ELFDATA2LSB 41 #endif 42 #define ELF_TARG_MACH EM_MIPS 43 44 #define _KERN_DO_ELF64 45 46 /* Information taken from MIPS ABI supplement */ 47 48 /* Architecture dependent Segment types - p_type */ 49 #define PT_MIPS_REGINFO 0x70000000 /* Register usage information */ 50 51 /* Architecture dependent d_tag field for Elf32_Dyn. */ 52 #define DT_MIPS_RLD_VERSION 0x70000001 /* Runtime Linker Interface ID */ 53 #define DT_MIPS_TIME_STAMP 0x70000002 /* Timestamp */ 54 #define DT_MIPS_ICHECKSUM 0x70000003 /* Cksum of ext. str. and com. sizes */ 55 #define DT_MIPS_IVERSION 0x70000004 /* Version string (string tbl index) */ 56 #define DT_MIPS_FLAGS 0x70000005 /* Flags */ 57 #define DT_MIPS_BASE_ADDRESS 0x70000006 /* Segment base address */ 58 #define DT_MIPS_CONFLICT 0x70000008 /* Adr of .conflict section */ 59 #define DT_MIPS_LIBLIST 0x70000009 /* Address of .liblist section */ 60 #define DT_MIPS_LOCAL_GOTNO 0x7000000a /* Number of local .GOT entries */ 61 #define DT_MIPS_CONFLICTNO 0x7000000b /* Number of .conflict entries */ 62 #define DT_MIPS_LIBLISTNO 0x70000010 /* Number of .liblist entries */ 63 #define DT_MIPS_SYMTABNO 0x70000011 /* Number of .dynsym entries */ 64 #define DT_MIPS_UNREFEXTNO 0x70000012 /* First external DYNSYM */ 65 #define DT_MIPS_GOTSYM 0x70000013 /* First GOT entry in .dynsym */ 66 #define DT_MIPS_HIPAGENO 0x70000014 /* Number of GOT page table entries */ 67 #define DT_MIPS_RLD_MAP 0x70000016 /* Address of debug map pointer */ 68 69 #define DT_PROCNUM (DT_MIPS_RLD_MAP - DT_LOPROC + 1) 70 71 /* 72 * Legal values for e_flags field of Elf32_Ehdr. 73 */ 74 #define EF_MIPS_NOREORDER 0x00000001 /* .noreorder was used */ 75 #define EF_MIPS_PIC 0x00000002 /* Contains PIC code */ 76 #define EF_MIPS_CPIC 0x00000004 /* Uses PIC calling sequence */ 77 #define EF_MIPS_ABI2 0x00000020 /* -n32 on Irix 6 */ 78 #define EF_MIPS_32BITMODE 0x00000100 /* 64 bit in 32 bit mode... */ 79 #define EF_MIPS_ARCH 0xf0000000 /* MIPS architecture level */ 80 #define E_MIPS_ARCH_1 0x00000000 81 #define E_MIPS_ARCH_2 0x10000000 82 #define E_MIPS_ARCH_3 0x20000000 83 #define E_MIPS_ARCH_4 0x30000000 84 #define EF_MIPS_ABI 0x0000f000 /* ABI level */ 85 #define E_MIPS_ABI_NONE 0x00000000 /* ABI level not set */ 86 #define E_MIPS_ABI_O32 0x00001000 87 #define E_MIPS_ABI_O64 0x00002000 88 #define E_MIPS_ABI_EABI32 0x00004000 89 #define E_MIPS_ABI_EABI64 0x00004000 90 91 /* 92 * Mips special sections. 93 */ 94 #define SHN_MIPS_ACOMMON 0xff00 /* Allocated common symbols */ 95 #define SHN_MIPS_SCOMMON 0xff03 /* Small common symbols */ 96 #define SHN_MIPS_SUNDEFINED 0xff04 /* Small undefined symbols */ 97 98 /* 99 * Legal values for sh_type field of Elf32_Shdr. 100 */ 101 #define SHT_MIPS_LIBLIST 0x70000000 /* Shared objects used in link */ 102 #define SHT_MIPS_CONFLICT 0x70000002 /* Conflicting symbols */ 103 #define SHT_MIPS_GPTAB 0x70000003 /* Global data area sizes */ 104 #define SHT_MIPS_UCODE 0x70000004 /* Reserved for SGI/MIPS compilers */ 105 #define SHT_MIPS_DEBUG 0x70000005 /* MIPS ECOFF debugging information */ 106 #define SHT_MIPS_REGINFO 0x70000006 /* Register usage information */ 107 108 /* 109 * Legal values for sh_flags field of Elf32_Shdr. 110 */ 111 #define SHF_MIPS_GPREL 0x10000000 /* Must be part of global data area */ 112 113 #if 0 114 /* 115 * Entries found in sections of type SHT_MIPS_GPTAB. 116 */ 117 typedef union { 118 struct { 119 Elf32_Word gt_current_g_value; /* -G val used in compilation */ 120 Elf32_Word gt_unused; /* Not used */ 121 } gt_header; /* First entry in section */ 122 struct { 123 Elf32_Word gt_g_value; /* If this val were used for -G */ 124 Elf32_Word gt_bytes; /* This many bytes would be used */ 125 } gt_entry; /* Subsequent entries in section */ 126 } Elf32_gptab; 127 128 /* 129 * Entry found in sections of type SHT_MIPS_REGINFO. 130 */ 131 typedef struct { 132 Elf32_Word ri_gprmask; /* General registers used */ 133 Elf32_Word ri_cprmask[4]; /* Coprocessor registers used */ 134 Elf32_Sword ri_gp_value; /* $gp register value */ 135 } Elf32_RegInfo; 136 #endif 137 138 139 /* 140 * Mips relocations. 141 */ 142 143 #define R_MIPS_NONE 0 /* No reloc */ 144 #define R_MIPS_16 1 /* Direct 16 bit */ 145 #define R_MIPS_32 2 /* Direct 32 bit */ 146 #define R_MIPS_REL32 3 /* PC relative 32 bit */ 147 #define R_MIPS_26 4 /* Direct 26 bit shifted */ 148 #define R_MIPS_HI16 5 /* High 16 bit */ 149 #define R_MIPS_LO16 6 /* Low 16 bit */ 150 #define R_MIPS_GPREL16 7 /* GP relative 16 bit */ 151 #define R_MIPS_LITERAL 8 /* 16 bit literal entry */ 152 #define R_MIPS_GOT16 9 /* 16 bit GOT entry */ 153 #define R_MIPS_PC16 10 /* PC relative 16 bit */ 154 #define R_MIPS_CALL16 11 /* 16 bit GOT entry for function */ 155 #define R_MIPS_GPREL32 12 /* GP relative 32 bit */ 156 157 #define R_MIPS_64 18 158 159 #define R_MIPS_REL32_64 ((R_MIPS_64 << 8) | R_MIPS_REL32) 160 161 162 #endif /* !_MIPS64_EXEC_H_ */ 163