include/sys/elf32.h

   1 /*
   2 ** Copyright 2001, Travis Geiselbrecht. All rights reserved.
   3 ** Distributed under the terms of the NewOS License.
   4 */
   5 #ifndef _ELF32_H
   6 #define _ELF32_H
   7
   8 #include <types.h>
   9
  10 typedef uint32 Elf32_Addr;
  11 typedef uint16 Elf32_Half;
  12 typedef uint32 Elf32_Off;
  13 typedef int32 Elf32_Sword;
  14 typedef uint32 Elf32_Word;
  15
  16 #define ELF_MAGIC "\x7f""ELF"
  17 #define EI_MAG0 0
  18 #define EI_MAG1 1
  19 #define EI_MAG2 2
  20 #define EI_MAG3 3
  21 #define EI_CLASS 4
  22 #define EI_DATA 5
  23 #define EI_VERSION 6
  24 #define EI_PAD 7
  25 #define EI_NIDENT 16
  26
  27 #define ELFCLASS32 1
  28 #define ELFCLASS64 2
  29 #define ELFDATA2LSB 1
  30 #define ELFDATA2MSB 2
  31
  32 struct Elf32_Ehdr {
  33         unsigned char   e_ident[EI_NIDENT];
  34         Elf32_Half              e_type;
  35         Elf32_Half              e_machine;
  36         Elf32_Word              e_version;
  37         Elf32_Addr              e_entry;
  38         Elf32_Off               e_phoff;
  39         Elf32_Off               e_shoff;
  40         Elf32_Word              e_flags;
  41         Elf32_Half              e_ehsize;
  42         Elf32_Half              e_phentsize;
  43         Elf32_Half              e_phnum;
  44         Elf32_Half              e_shentsize;
  45         Elf32_Half              e_shnum;
  46         Elf32_Half              e_shstrndx;
  47 } ;
  48
  49 struct Elf32_Shdr {
  50         Elf32_Word              sh_name;
  51         Elf32_Word              sh_type;
  52         Elf32_Word              sh_flags;
  53         Elf32_Addr              sh_addr;
  54         Elf32_Off               sh_offset;
  55         Elf32_Word              sh_size;
  56         Elf32_Word              sh_link;
  57         Elf32_Word              sh_info;
  58         Elf32_Word              sh_addralign;
  59         Elf32_Word              sh_entsize;
  60 } ;
  61
  62 #define SHT_NULL 0
  63 #define SHT_PROGBITS 1
  64 #define SHT_SYMTAB 2
  65 #define SHT_STRTAB 3
  66 #define SHT_RELA 4
  67 #define SHT_HASH 5
  68 #define SHT_DYNAMIC 6
  69 #define SHT_NOTE 7
  70 #define SHT_NOBITS 8
  71 #define SHT_REL 9
  72 #define SHT_SHLIB 10
  73 #define SHT_DYNSYM 11
  74 #define SHT_LOPROC 0x70000000
  75 #define SHT_HIPROC 0x7fffffff
  76 #define SHT_LOUSER 0x80000000
  77 #define SHT_HIUSER 0xffffffff
  78
  79 #define SHF_WRITE 1
  80
  81 struct Elf32_Phdr {
  82         Elf32_Word              p_type;
  83         Elf32_Off               p_offset;
  84         Elf32_Addr              p_vaddr;
  85         Elf32_Addr              p_paddr;
  86         Elf32_Word              p_filesz;
  87         Elf32_Word              p_memsz;
  88         Elf32_Word              p_flags;
  89         Elf32_Word              p_align;
  90 } ;
  91
  92 #define PF_X            0x1
  93 #define PF_W            0x2
  94 #define PF_R            0x4
  95 #define PF_MASKPROC     0xf0000000
  96
  97
  98 #define PT_NULL 0
  99 #define PT_LOAD 1
 100 #define PT_DYNAMIC 2
 101 #define PT_INTERP 3
 102 #define PT_NOTE 4
 103 #define PT_SHLIB 5
 104 #define PT_PHDR 6
 105 #define PT_LOPROC 0x70000000
 106 #define PT_HIPROC 0x7fffffff
 107
 108 struct Elf32_Sym {
 109         Elf32_Word              st_name;
 110         Elf32_Addr              st_value;
 111         Elf32_Word              st_size;
 112         unsigned char   st_info;
 113         unsigned char   st_other;
 114         Elf32_Half              st_shndx;
 115 };
 116
 117 #define ELF32_ST_BIND(i) ((i) >> 4)
 118 #define ELF32_ST_TYPE(i) ((i) & 0xf)
 119 #define ELF32_ST_INFO(b, t) (((b) << 4) + ((t) & 0xf))
 120
 121 #define STT_NOTYPE 0
 122 #define STT_OBJECT 1
 123 #define STT_FUNC 2
 124 #define STT_SECTION 3
 125 #define STT_FILE 4
 126 #define STT_LOPROC 13
 127 #define STT_HIPROC 15
 128
 129 #define STN_UNDEF 0
 130
 131 struct Elf32_Rel {
 132         Elf32_Addr r_offset;
 133         Elf32_Word r_info;
 134 };
 135
 136 struct Elf32_Rela {
 137         Elf32_Addr r_offset;
 138         Elf32_Word r_info;
 139         Elf32_Sword r_addend;
 140 };
 141
 142 #define ELF32_R_SYM(i) ((i) >> 8)
 143 #define ELF32_R_TYPE(i) ((unsigned char)(i))
 144 #define ELF32_R_INFO(s, t) (((s) << 8) + (unsigned char)(t))
 145
 146 struct Elf32_Dyn {
 147         Elf32_Sword d_tag;
 148         union {
 149                 Elf32_Word d_val;
 150                 Elf32_Addr d_ptr;
 151         } d_un;
 152 };
 153
 154 #define DT_NULL 0
 155 #define DT_NEEDED 1
 156 #define DT_PLTRELSZ 2
 157 #define DT_PLTGOT 3
 158 #define DT_HASH 4
 159 #define DT_STRTAB 5
 160 #define DT_SYMTAB 6
 161 #define DT_RELA 7
 162 #define DT_RELASZ 8
 163 #define DT_RELAENT 9
 164 #define DT_STRSZ 10
 165 #define DT_SYMENT 11
 166 #define DT_INIT 12
 167 #define DT_FINI 13
 168 #define DT_SONAME 14
 169 #define DT_RPATH 15
 170 #define DT_SYMBOLIC 16
 171 #define DT_REL 17
 172 #define DT_RELSZ 18
 173 #define DT_RELENT 19
 174 #define DT_PLTREL 20
 175 #define DT_DEBUG 21
 176 #define DT_TEXTREL 22
 177 #define DT_JMPREL 23
 178 #define DT_LOPROC 0x70000000
 179 #define DT_HIPROC 0x7fffffff
 180
 181 #endif