compiler/include/dos/elf.h

   1 #ifndef DOS_ELF_H
   2 #define DOS_ELF_H
   3
   4 /*
   5     Copyright © 1995-2011, The AROS Development Team. All rights reserved.
   6     $Id$
   7
   8     Desc: Definition of ELF file structures.
   9     Lang: english
  10 */
  11
  12 #include <exec/types.h>
  13
  14 /*
  15  * Define one of ELF_64BIT or ELF_32BIT in your code if you want to enforce specific
  16  * version of ELF structures. Otherwize it fails back to your native machine's size.
  17  */
  18 #ifdef ELF_64BIT
  19 #define elf_ptr_t       UQUAD
  20 #define elf_uintptr_t   UQUAD
  21 #define elf_intptr_t    QUAD
  22 #endif
  23
  24 #ifdef ELF_32BIT
  25 #define elf_ptr_t       ULONG
  26 #define elf_uintptr_t   ULONG
  27 #define elf_intptr_t    LONG
  28 #endif
  29
  30 #ifndef elf_ptr_t
  31 #define elf_ptr_t       APTR
  32 #define elf_uintptr_t   IPTR
  33 #define elf_intptr_t    SIPTR
  34
  35 #if (__WORDSIZE == 64)
  36 #define ELF_64BIT
  37 #endif
  38
  39 #endif
  40
  41 #define SHT_PROGBITS       1
  42 #define SHT_SYMTAB         2
  43 #define SHT_STRTAB         3
  44 #define SHT_RELA           4
  45 #define SHT_NOBITS         8
  46 #define SHT_REL            9
  47 #define SHT_SYMTAB_SHNDX   18
  48 #define SHT_ARM_ATTRIBUTES 0x70000003
  49
  50 #define ET_REL          1
  51 #define ET_EXEC         2
  52
  53 #define EM_386          3
  54 #define EM_68K          4
  55 #define EM_PPC          20
  56 #define EM_ARM          40
  57 #define EM_X86_64       62      /* AMD x86-64 */
  58
  59 #define R_386_NONE      0
  60 #define R_386_32        1
  61 #define R_386_PC32      2
  62
  63 /* AMD x86-64 relocations.  */
  64 #define R_X86_64_NONE   0       /* No reloc */
  65 #define R_X86_64_64     1       /* Direct 64 bit  */
  66 #define R_X86_64_PC32   2       /* PC relative 32 bit signed */
  67 #define R_X86_64_32     10
  68 #define R_X86_64_32S    11
  69
  70 #define R_68K_NONE      0
  71 #define R_68K_32        1
  72 #define R_68K_16        2
  73 #define R_68K_8         3
  74 #define R_68K_PC32      4
  75 #define R_68K_PC16      5
  76 #define R_68K_PC8       6
  77
  78 #define R_PPC_NONE      0
  79 #define R_PPC_ADDR32    1
  80 #define R_PPC_ADDR16_LO 4
  81 #define R_PPC_ADDR16_HA 6
  82 #define R_PPC_REL24     10
  83 #define R_PPC_REL32     26
  84 #define R_PPC_REL16_LO  250
  85 #define R_PPC_REL16_HA  252
  86
  87 #define R_ARM_NONE            0
  88 #define R_ARM_PC24            1
  89 #define R_ARM_ABS32           2
  90 #define R_ARM_CALL            28
  91 #define R_ARM_JUMP24          29
  92 #define R_ARM_TARGET1         38
  93 #define R_ARM_V4BX            40
  94 #define R_ARM_TARGET2         41
  95 #define R_ARM_PREL31          42
  96 #define R_ARM_MOVW_ABS_NC     43
  97 #define R_ARM_MOVT_ABS        44
  98 #define R_ARM_THM_CALL        10
  99 #define R_ARM_THM_JUMP24      30
 100 #define R_ARM_THM_MOVW_ABS_NC 47
 101 #define R_ARM_THM_MOVT_ABS    48
 102
 103 #define STT_NOTYPE      0
 104 #define STT_OBJECT      1
 105 #define STT_FUNC        2
 106 #define STT_SECTION     3
 107 #define STT_FILE        4
 108 #define STT_LOPROC      13
 109 #define STT_HIPROC      15
 110
 111 #define STB_LOCAL       0
 112 #define STB_GLOBAL      1
 113 #define STB_WEAK        2
 114 #define STB_LOOS        10
 115 #define STB_GNU_UNIQUE  10
 116 #define STB_HIOS        12
 117 #define STB_LOPROC      13
 118 #define STB_HIPROC      15
 119
 120 #define SHN_UNDEF       0
 121 #define SHN_LORESERVE   0xff00
 122 #define SHN_ABS         0xfff1
 123 #define SHN_COMMON      0xfff2
 124 #define SHN_XINDEX      0xffff
 125 #define SHN_HIRESERVE   0xffff
 126
 127 #define SHF_WRITE       (1 << 0)
 128 #define SHF_ALLOC       (1 << 1)
 129 #define SHF_EXECINSTR   (1 << 2)
 130
 131 #define ELF_ST_TYPE(i)    ((i) & 0x0F)
 132
 133 #define EI_VERSION      6
 134 #define EV_CURRENT      1
 135
 136 #define EI_DATA         5
 137 #define ELFDATA2LSB     1
 138 #define ELFDATA2MSB     2
 139
 140 #define EI_CLASS        4
 141 #define ELFCLASS32      1
 142 #define ELFCLASS64      2               /* 64-bit objects */
 143
 144 #define EI_OSABI        7
 145 #define EI_ABIVERSION   8
 146
 147 #define ELFOSABI_AROS   15
 148
 149 #define PF_X            (1 << 0)
 150
 151 struct elfheader
 152 {
 153     UBYTE         ident[16];
 154     UWORD         type;
 155     UWORD         machine;
 156     ULONG         version;
 157     elf_ptr_t     entry;
 158     elf_uintptr_t phoff;
 159     elf_uintptr_t shoff;
 160     ULONG         flags;
 161     UWORD         ehsize;
 162     UWORD         phentsize;
 163     UWORD         phnum;
 164     UWORD         shentsize;
 165     UWORD         shnum;
 166     UWORD         shstrndx;
 167 };
 168
 169 struct sheader
 170 {
 171     ULONG         name;
 172     ULONG         type;
 173     elf_uintptr_t flags;
 174     elf_ptr_t     addr;
 175     elf_uintptr_t offset;
 176     elf_uintptr_t size;
 177     ULONG         link;
 178     ULONG         info;
 179     elf_uintptr_t addralign;
 180     elf_uintptr_t entsize;
 181 };
 182
 183 #define PT_LOAD 1
 184
 185 #ifdef ELF_64BIT
 186
 187 struct pheader
 188 {
 189     ULONG         type;
 190     ULONG         flags;
 191     elf_uintptr_t offset;
 192     elf_ptr_t     vaddr;
 193     elf_ptr_t     paddr;
 194     elf_uintptr_t filesz;
 195     elf_uintptr_t memsz;
 196     elf_uintptr_t align;
 197 };
 198
 199 struct symbol
 200 {
 201     ULONG         name;     /* Offset of the name string in the string table            */
 202     UBYTE         info;     /* What kind of symbol is this ? (global, variable, etc)    */
 203     UBYTE         other;    /* undefined                                                */
 204     UWORD         shindex;  /* In which section is the symbol defined ?                 */
 205     elf_uintptr_t value;    /* Varies; eg. the offset of the symbol in its hunk         */
 206     elf_uintptr_t size;     /* How much memory does the symbol occupy                   */
 207 };
 208
 209 #define ELF_R_SYM(i)          (ULONG)((i) >> 32)
 210 #define ELF_R_TYPE(i)         (ULONG)((i) & 0xffffffffULL)
 211 #define ELF_R_INFO(sym, type) (((UQUAD)(sym) << 32) + (type))
 212
 213 #else
 214
 215 struct pheader
 216 {
 217     ULONG     type;
 218     ULONG     offset;
 219     elf_ptr_t vaddr;
 220     elf_ptr_t paddr;
 221     ULONG     filesz;
 222     ULONG     memsz;
 223     ULONG     flags;
 224     ULONG     align;
 225 };
 226
 227 struct symbol
 228 {
 229     ULONG         name;     /* Offset of the name string in the string table            */
 230     elf_uintptr_t value;    /* Varies; eg. the offset of the symbol in its hunk         */
 231     elf_uintptr_t size;     /* How much memory does the symbol occupy                   */
 232     UBYTE         info;     /* What kind of symbol is this ? (global, variable, etc)    */
 233     UBYTE         other;    /* undefined                                                */
 234     UWORD         shindex;  /* In which section is the symbol defined ?                 */
 235 };
 236
 237 #define ELF_R_SYM(val)        ((val) >> 8)
 238 #define ELF_R_TYPE(val)       ((val) & 0xff)
 239 #define ELF_R_INFO(sym, type) (((sym) << 8) + ((type) & 0xff))
 240
 241 #endif
 242
 243 #define ELF_S_BIND(val)         ((val) >> 4)
 244 #define ELF_S_TYPE(val)         ((val) & 0xF)
 245 #define ELF_S_INFO(bind, type)  (((bind) << 4) + ((type) & 0xF))
 246
 247 struct rel
 248 {
 249     elf_uintptr_t offset;   /* Address of the relocation relative to the section it refers to */
 250     elf_uintptr_t info;     /* Type of the relocation */
 251 };
 252
 253 struct rela
 254 {
 255     elf_uintptr_t offset;   /* Address of the relocation relative to the section it refers to */
 256     elf_uintptr_t info;     /* Type of the relocation */
 257     elf_intptr_t  addend;   /* Constant addend used to compute value */
 258 };
 259
 260 /* Note: the conversion below is not in line with ELF specification and is fixed in GNU binutils since 2008
 261  * See: https://sourceware.org/bugzilla/show_bug.cgi?id=5900
 262  */
 263 /* convert section header number to array index */
 264 /*#define SHINDEX(n) \
 265     ((n) < SHN_LORESERVE ? (n) : ((n) <= SHN_HIRESERVE ? 0 : (n) - (SHN_HIRESERVE + 1 - SHN_LORESERVE)))*/
 266
 267 /* convert section header array index to section number */
 268 /*#define SHNUM(i) \
 269     ((i) < SHN_LORESERVE ? (i) : (i) + (SHN_HIRESERVE + 1 - SHN_LORESERVE))*/
 270
 271 /* ARM-specific attributes section definitions follow */
 272
 273 #define ATTR_VERSION_CURRENT 0x41
 274
 275 struct attrs_section
 276 {
 277     ULONG size;
 278     char  vendor[1];        /* NULL-terminated name */
 279                             /* Vendor-specific subsections follow */
 280 };
 281
 282 struct attrs_subsection
 283 {
 284     UBYTE tag;
 285     ULONG size;
 286 } __attribute__((packed));
 287
 288 #define Tag_File                 1
 289 #define Tag_Section              2
 290 #define Tag_Symbol               3
 291 #define Tag_CPU_raw_name         4
 292 #define Tag_CPU_name             5
 293 #define Tag_CPU_arch             6
 294 #define Tag_FP_arch              10
 295 #define Tag_compatibility        32
 296 #define Tag_also_compatible_with 65
 297 #define Tag_conformance          67
 298
 299 /* Tag_CPU_arch values */
 300 #define ELF_CPU_PREv4    0
 301 #define ELF_CPU_ARMv4    1
 302 #define ELF_CPU_ARMv4T   2
 303 #define ELF_CPU_ARMv5T   3
 304 #define ELF_CPU_ARMv5TE  4
 305 #define ELF_CPU_ARMv5TEJ 5
 306 #define ELF_CPU_ARMv6    6
 307 #define ELF_CPU_ARMv6KZ  7
 308 #define ELF_CPU_ARMv6T2  8
 309 #define ELF_CPU_ARMv6K   9
 310 #define ELF_CPU_ARMv7    10
 311 #define ELF_CPU_ARM_v6M  11
 312 #define ELF_CPU_ARMv6SM  12
 313 #define ELF_CPU_ARMv7EM  13
 314
 315 /* Tag_FP_arch values */
 316 #define ELF_FP_None     0
 317 #define ELF_FP_v1       1
 318 #define ELF_FP_v2       2
 319 #define ELF_FP_v3       3
 320 #define ELF_FP_v3_Short 4
 321 #define ELF_FP_v4       5
 322 #define ELF_FP_v4_Short 6
 323
 324 /* Machine's native values */
 325 #ifdef ELF_64BIT
 326 #define AROS_ELF_CLASS ELFCLASS64
 327 #else
 328 #define AROS_ELF_CLASS ELFCLASS32
 329 #endif
 330
 331 #if AROS_BIG_ENDIAN
 332 #define AROS_ELF_DATA ELFDATA2MSB
 333 #else
 334 #define AROS_ELF_DATA ELFDATA2LSB
 335 #endif
 336
 337 #if defined(__i386__) || defined(__x86_64__)
 338 #ifdef ELF_64BIT
 339 #define AROS_ELF_MACHINE EM_X86_64
 340 #define AROS_ELF_REL     SHT_RELA
 341 #define relo             rela
 342 #else
 343 #define AROS_ELF_MACHINE EM_386
 344 #define AROS_ELF_REL     SHT_REL
 345 #define relo             rel
 346 #endif
 347 #endif
 348 #ifdef __mc68000__
 349 #define AROS_ELF_MACHINE EM_68K
 350 #define AROS_ELF_REL     SHT_RELA
 351 #define relo             rela
 352 #endif
 353 #ifdef __powerpc__
 354 #define AROS_ELF_MACHINE EM_PPC
 355 #define AROS_ELF_REL     SHT_RELA
 356 #define relo             rela
 357 #endif
 358 #ifdef __arm__
 359 #define AROS_ELF_MACHINE EM_ARM
 360 #define AROS_ELF_REL     SHT_REL
 361 #define relo             rel
 362 #endif
 363
 364 #endif