output/elfcommon.h

   1 /* ----------------------------------------------------------------------- *
   2  *
   3  *   Copyright 1996-2009 The NASM Authors - All Rights Reserved
   4  *   See the file AUTHORS included with the NASM distribution for
   5  *   the specific copyright holders.
   6  *
   7  *   Redistribution and use in source and binary forms, with or without
   8  *   modification, are permitted provided that the following
   9  *   conditions are met:
  10  *
  11  *   * Redistributions of source code must retain the above copyright
  12  *     notice, this list of conditions and the following disclaimer.
  13  *   * Redistributions in binary form must reproduce the above
  14  *     copyright notice, this list of conditions and the following
  15  *     disclaimer in the documentation and/or other materials provided
  16  *     with the distribution.
  17  *
  18  *     THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
  19  *     CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES,
  20  *     INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
  21  *     MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
  22  *     DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
  23  *     CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  24  *     SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
  25  *     NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
  26  *     LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  27  *     HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
  28  *     CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
  29  *     OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
  30  *     EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  31  *
  32  * ----------------------------------------------------------------------- */
  33
  34 #ifndef OUTPUT_ELFCOMMON_H
  35 #define OUTPUT_ELFCOMMON_H
  36
  37 #include "compiler.h"
  38 #include <inttypes.h>
  39
  40 /* Segment types */
  41 #define PT_NULL         0
  42 #define PT_LOAD         1
  43 #define PT_DYNAMIC      2
  44 #define PT_INTERP       3
  45 #define PT_NOTE         4
  46 #define PT_SHLIB        5
  47 #define PT_PHDR         6
  48 #define PT_LOOS         0x60000000
  49 #define PT_HIOS         0x6fffffff
  50 #define PT_LOPROC       0x70000000
  51 #define PT_HIPROC       0x7fffffff
  52 #define PT_GNU_EH_FRAME 0x6474e550      /* Extension, eh? */
  53
  54 /* ELF file types */
  55 #define ET_NONE         0
  56 #define ET_REL          1
  57 #define ET_EXEC         2
  58 #define ET_DYN          3
  59 #define ET_CORE         4
  60 #define ET_LOPROC       0xff00
  61 #define ET_HIPROC       0xffff
  62
  63 /* ELF machine types */
  64 #define EM_NONE         0
  65 #define EM_M32          1
  66 #define EM_SPARC        2
  67 #define EM_386          3
  68 #define EM_68K          4
  69 #define EM_88K          5
  70 #define EM_486          6       /* Not used in Linux at least */
  71 #define EM_860          7
  72 #define EM_MIPS         8       /* R3k, bigendian(?) */
  73 #define EM_MIPS_RS4_BE  10      /* R4k BE */
  74 #define EM_PARISC       15
  75 #define EM_SPARC32PLUS  18
  76 #define EM_PPC          20
  77 #define EM_PPC64        21
  78 #define EM_S390         22
  79 #define EM_SH           42
  80 #define EM_SPARCV9      43      /* v9 = SPARC64 */
  81 #define EM_H8_300H      47
  82 #define EM_H8S          48
  83 #define EM_IA_64        50
  84 #define EM_X86_64       62
  85 #define EM_CRIS         76
  86 #define EM_V850         87
  87 #define EM_ALPHA        0x9026  /* Interrim Alpha that stuck around */
  88 #define EM_CYGNUS_V850  0x9080  /* Old v850 ID used by Cygnus */
  89 #define EM_S390_OLD     0xA390  /* Obsolete interrim value for S/390 */
  90
  91 /* Dynamic type values */
  92 #define DT_NULL         0
  93 #define DT_NEEDED       1
  94 #define DT_PLTRELSZ     2
  95 #define DT_PLTGOT       3
  96 #define DT_HASH         4
  97 #define DT_STRTAB       5
  98 #define DT_SYMTAB       6
  99 #define DT_RELA         7
 100 #define DT_RELASZ       8
 101 #define DT_RELAENT      9
 102 #define DT_STRSZ        10
 103 #define DT_SYMENT       11
 104 #define DT_INIT         12
 105 #define DT_FINI         13
 106 #define DT_SONAME       14
 107 #define DT_RPATH        15
 108 #define DT_SYMBOLIC     16
 109 #define DT_REL          17
 110 #define DT_RELSZ        18
 111 #define DT_RELENT       19
 112 #define DT_PLTREL       20
 113 #define DT_DEBUG        21
 114 #define DT_TEXTREL      22
 115 #define DT_JMPREL       23
 116 #define DT_LOPROC       0x70000000
 117 #define DT_HIPROC       0x7fffffff
 118
 119 /* Auxilliary table entries */
 120 #define AT_NULL         0       /* end of vector */
 121 #define AT_IGNORE       1       /* entry should be ignored */
 122 #define AT_EXECFD       2       /* file descriptor of program */
 123 #define AT_PHDR         3       /* program headers for program */
 124 #define AT_PHENT        4       /* size of program header entry */
 125 #define AT_PHNUM        5       /* number of program headers */
 126 #define AT_PAGESZ       6       /* system page size */
 127 #define AT_BASE         7       /* base address of interpreter */
 128 #define AT_FLAGS        8       /* flags */
 129 #define AT_ENTRY        9       /* entry point of program */
 130 #define AT_NOTELF       10      /* program is not ELF */
 131 #define AT_UID          11      /* real uid */
 132 #define AT_EUID         12      /* effective uid */
 133 #define AT_GID          13      /* real gid */
 134 #define AT_EGID         14      /* effective gid */
 135 #define AT_PLATFORM     15      /* string identifying CPU for optimizations */
 136 #define AT_HWCAP        16      /* arch dependent hints at CPU capabilities */
 137 #define AT_CLKTCK       17      /* frequency at which times() increments */
 138 /* 18..22 = ? */
 139 #define AT_SECURE       23      /* secure mode boolean */
 140
 141 /* Program header permission flags */
 142 #define PF_X            0x1
 143 #define PF_W            0x2
 144 #define PF_R            0x4
 145
 146 /* Section header types */
 147 #define SHT_NULL        0
 148 #define SHT_PROGBITS    1
 149 #define SHT_SYMTAB      2
 150 #define SHT_STRTAB      3
 151 #define SHT_RELA        4
 152 #define SHT_HASH        5
 153 #define SHT_DYNAMIC     6
 154 #define SHT_NOTE        7
 155 #define SHT_NOBITS      8
 156 #define SHT_REL         9
 157 #define SHT_SHLIB       10
 158 #define SHT_DYNSYM      11
 159 #define SHT_NUM         12
 160 #define SHT_LOPROC      0x70000000
 161 #define SHT_HIPROC      0x7fffffff
 162 #define SHT_LOUSER      0x80000000
 163 #define SHT_HIUSER      0xffffffff
 164
 165 /* Section header flags */
 166 #define SHF_WRITE            (1 << 0)   /* Writable */
 167 #define SHF_ALLOC            (1 << 1)   /* Occupies memory during execution */
 168 #define SHF_EXECINSTR        (1 << 2)   /* Executable */
 169 #define SHF_MERGE            (1 << 4)   /* Might be merged */
 170 #define SHF_STRINGS          (1 << 5)   /* Contains nul-terminated strings */
 171 #define SHF_INFO_LINK        (1 << 6)   /* `sh_info' contains SHT index */
 172 #define SHF_LINK_ORDER       (1 << 7)   /* Preserve order after combining */
 173 #define SHF_OS_NONCONFORMING (1 << 8)   /* Non-standard OS specific handling
 174                                            required */
 175 #define SHF_GROUP            (1 << 9)   /* Section is member of a group.  */
 176 #define SHF_TLS              (1 << 10)  /* Section hold thread-local data.  */
 177
 178 /* Special section numbers */
 179 #define SHN_UNDEF       0
 180 #define SHN_LORESERVE   0xff00
 181 #define SHN_LOPROC      0xff00
 182 #define SHN_HIPROC      0xff1f
 183 #define SHN_ABS         0xfff1
 184 #define SHN_COMMON      0xfff2
 185 #define SHN_HIRESERVE   0xffff
 186
 187 /* Lenght of magic at the start of a file */
 188 #define EI_NIDENT       16
 189
 190 /* Magic number constants... */
 191 #define EI_MAG0         0       /* e_ident[] indexes */
 192 #define EI_MAG1         1
 193 #define EI_MAG2         2
 194 #define EI_MAG3         3
 195 #define EI_CLASS        4
 196 #define EI_DATA         5
 197 #define EI_VERSION      6
 198 #define EI_OSABI        7
 199 #define EI_PAD          8
 200
 201 #define ELFMAG0         0x7f    /* EI_MAG */
 202 #define ELFMAG1         'E'
 203 #define ELFMAG2         'L'
 204 #define ELFMAG3         'F'
 205 #define ELFMAG          "\177ELF"
 206 #define SELFMAG         4
 207
 208 #define ELFCLASSNONE    0       /* EI_CLASS */
 209 #define ELFCLASS32      1
 210 #define ELFCLASS64      2
 211 #define ELFCLASSNUM     3
 212
 213 #define ELFDATANONE     0       /* e_ident[EI_DATA] */
 214 #define ELFDATA2LSB     1
 215 #define ELFDATA2MSB     2
 216
 217 #define EV_NONE         0       /* e_version, EI_VERSION */
 218 #define EV_CURRENT      1
 219 #define EV_NUM          2
 220
 221 #define ELFOSABI_NONE   0
 222 #define ELFOSABI_LINUX  3
 223
 224 /* Legal values for ST_BIND subfield of st_info (symbol binding).  */
 225 #define STB_LOCAL       0               /* Local symbol */
 226 #define STB_GLOBAL      1               /* Global symbol */
 227 #define STB_WEAK        2               /* Weak symbol */
 228 #define STB_NUM         3               /* Number of defined types.  */
 229 #define STB_LOOS        10              /* Start of OS-specific */
 230 #define STB_HIOS        12              /* End of OS-specific */
 231 #define STB_LOPROC      13              /* Start of processor-specific */
 232 #define STB_HIPROC      15              /* End of processor-specific */
 233
 234 /* Symbol types */
 235 #define STT_NOTYPE      0               /* Symbol type is unspecified */
 236 #define STT_OBJECT      1               /* Symbol is a data object */
 237 #define STT_FUNC        2               /* Symbol is a code object */
 238 #define STT_SECTION     3               /* Symbol associated with a section */
 239 #define STT_FILE        4               /* Symbol's name is file name */
 240 #define STT_COMMON      5               /* Symbol is a common data object */
 241 #define STT_TLS         6               /* Symbol is thread-local data object*/
 242 #define STT_NUM         7               /* Number of defined types.  */
 243
 244 /* Symbol visibilities */
 245 #define STV_DEFAULT     0               /* Default symbol visibility rules */
 246 #define STV_INTERNAL    1               /* Processor specific hidden class */
 247 #define STV_HIDDEN      2               /* Sym unavailable in other modules */
 248 #define STV_PROTECTED   3               /* Not preemptible, not exported */
 249
 250 #endif /* OUTPUT_ELFCOMMON_H */