output/elf64.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_ELF64_H
  35 #define OUTPUT_ELF64_H
  36
  37 #include "output/elfcommon.h"
  38
  39 /* ELF standard typedefs (yet more proof that <stdint.h> was way overdue) */
  40 typedef uint16_t Elf64_Half;
  41 typedef int16_t Elf64_SHalf;
  42 typedef uint32_t Elf64_Word;
  43 typedef int32_t Elf64_Sword;
  44 typedef uint64_t Elf64_Xword;
  45 typedef int64_t Elf64_Sxword;
  46
  47 typedef uint64_t Elf64_Off;
  48 typedef uint64_t Elf64_Addr;
  49 typedef uint16_t Elf64_Section;
  50
  51 /* Dynamic header */
  52
  53 typedef struct elf64_dyn {
  54     Elf64_Sxword d_tag;
  55     union {
  56         Elf64_Xword d_val;
  57         Elf64_Addr d_ptr;
  58     } d_un;
  59 } Elf64_Dyn;
  60
  61 /* Relocations */
  62
  63 #define ELF64_R_SYM(x)  ((x) >> 32)
  64 #define ELF64_R_TYPE(x) ((x) & 0xffffffff)
  65
  66 typedef struct elf64_rel {
  67     Elf64_Addr r_offset;
  68     Elf64_Xword r_info;
  69 } Elf64_Rel;
  70
  71 typedef struct elf64_rela {
  72     Elf64_Addr r_offset;
  73     Elf64_Xword r_info;
  74     Elf64_Sxword r_addend;
  75 } Elf64_Rela;
  76
  77 enum reloc64_type {
  78     R_X86_64_NONE       =  0,   /* No reloc */
  79     R_X86_64_64         =  1,   /* Direct 64 bit  */
  80     R_X86_64_PC32       =  2,   /* PC relative 32 bit signed */
  81     R_X86_64_GOT32      =  3,   /* 32 bit GOT entry */
  82     R_X86_64_PLT32      =  4,   /* 32 bit PLT address */
  83     R_X86_64_COPY       =  5,   /* Copy symbol at runtime */
  84     R_X86_64_GLOB_DAT   =  6,   /* Create GOT entry */
  85     R_X86_64_JUMP_SLOT  =  7,   /* Create PLT entry */
  86     R_X86_64_RELATIVE   =  8,   /* Adjust by program base */
  87     R_X86_64_GOTPCREL   =  9,   /* 32 bit signed PC relative offset to GOT */
  88     R_X86_64_32         = 10,   /* Direct 32 bit zero extended */
  89     R_X86_64_32S        = 11,   /* Direct 32 bit sign extended */
  90     R_X86_64_16         = 12,   /* Direct 16 bit zero extended */
  91     R_X86_64_PC16       = 13,   /* 16 bit sign extended pc relative */
  92     R_X86_64_8          = 14,   /* Direct 8 bit sign extended  */
  93     R_X86_64_PC8        = 15,   /* 8 bit sign extended pc relative */
  94     R_X86_64_DTPMOD64   = 16,   /* ID of module containing symbol */
  95     R_X86_64_DTPOFF64   = 17,   /* Offset in module's TLS block */
  96     R_X86_64_TPOFF64    = 18,   /* Offset in initial TLS block */
  97     R_X86_64_TLSGD      = 19,   /* 32 bit signed PC relative offset
  98                                    to two GOT entries for GD symbol */
  99     R_X86_64_TLSLD      = 20,   /* 32 bit signed PC relative offset
 100                                    to two GOT entries for LD symbol */
 101     R_X86_64_DTPOFF32   = 21,   /* Offset in TLS block */
 102     R_X86_64_GOTTPOFF   = 22,   /* 32 bit signed PC relative offset
 103                                    to GOT entry for IE symbol */
 104     R_X86_64_TPOFF32    = 23,   /* Offset in initial TLS block */
 105     R_X86_64_PC64       = 24,   /* word64 S + A - P */
 106     R_X86_64_GOTOFF64   = 25,   /* word64 S + A - GOT */
 107     R_X86_64_GOTPC32    = 26,   /* word32 GOT + A - P */
 108     R_X86_64_GOT64      = 27,   /* word64 G + A */
 109     R_X86_64_GOTPCREL64 = 28,   /* word64 G + GOT - P + A */
 110     R_X86_64_GOTPC64    = 29,   /* word64 GOT - P + A */
 111     R_X86_64_GOTPLT64   = 30,   /* word64 G + A */
 112     R_X86_64_PLTOFF64   = 31,   /* word64 L - GOT + A */
 113     R_X86_64_SIZE32     = 32,   /* word32 Z + A */
 114     R_X86_64_SIZE64     = 33,   /* word64 Z + A */
 115     R_X86_64_GOTPC32_TLSDESC = 34,      /* word32 */
 116     R_X86_64_TLSDESC_CALL    = 35,      /* none */
 117     R_X86_64_TLSDESC    = 36    /* word64×2 */
 118 };
 119
 120 /* Symbol */
 121
 122 typedef struct elf64_sym {
 123     Elf64_Word st_name;
 124     unsigned char st_info;
 125     unsigned char st_other;
 126     Elf64_Half st_shndx;
 127     Elf64_Addr st_value;
 128     Elf64_Xword st_size;
 129 } Elf64_Sym;
 130
 131 /* Main file header */
 132
 133 typedef struct elf64_hdr {
 134     unsigned char e_ident[EI_NIDENT];
 135     Elf64_Half e_type;
 136     Elf64_Half e_machine;
 137     Elf64_Word e_version;
 138     Elf64_Addr e_entry;
 139     Elf64_Off e_phoff;
 140     Elf64_Off e_shoff;
 141     Elf64_Word e_flags;
 142     Elf64_Half e_ehsize;
 143     Elf64_Half e_phentsize;
 144     Elf64_Half e_phnum;
 145     Elf64_Half e_shentsize;
 146     Elf64_Half e_shnum;
 147     Elf64_Half e_shstrndx;
 148 } Elf64_Ehdr;
 149
 150 /* Program header */
 151
 152 typedef struct elf64_phdr {
 153     Elf64_Word p_type;
 154     Elf64_Word p_flags;
 155     Elf64_Off p_offset;
 156     Elf64_Addr p_vaddr;
 157     Elf64_Addr p_paddr;
 158     Elf64_Xword p_filesz;
 159     Elf64_Xword p_memsz;
 160     Elf64_Xword p_align;
 161 } Elf64_Phdr;
 162
 163 /* Section header */
 164
 165 typedef struct elf64_shdr {
 166     Elf64_Word sh_name;
 167     Elf64_Word sh_type;
 168     Elf64_Xword sh_flags;
 169     Elf64_Addr sh_addr;
 170     Elf64_Off sh_offset;
 171     Elf64_Xword sh_size;
 172     Elf64_Word sh_link;
 173     Elf64_Word sh_info;
 174     Elf64_Xword sh_addralign;
 175     Elf64_Xword sh_entsize;
 176 } Elf64_Shdr;
 177
 178 /* Note header */
 179 typedef struct elf64_note {
 180     Elf64_Word n_namesz;        /* Name size */
 181     Elf64_Word n_descsz;        /* Content size */
 182     Elf64_Word n_type;  /* Content type */
 183 } Elf64_Nhdr;
 184
 185 /* Both Elf32_Sym and Elf64_Sym use the same one-byte st_info field.  */
 186 #define ELF64_ST_BIND(val)              ELF32_ST_BIND (val)
 187 #define ELF64_ST_TYPE(val)              ELF32_ST_TYPE (val)
 188
 189 #endif /* OUTPUT_ELF64_H */