1 #ifndef __XEN_ELFSTRUCTS_H__ 2 #define __XEN_ELFSTRUCTS_H__ 3 /* 4 * Copyright (c) 1995, 1996 Erik Theisen. All rights reserved. 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 * 3. The name of the author may not be used to endorse or promote products 15 * derived from this software without specific prior written permission 16 * 17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 18 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 19 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 20 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 21 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 22 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 23 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 24 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 25 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 26 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 27 */ 28 29 typedef uint32_t Elf32_Addr; /* Unsigned program address */ 30 typedef uint32_t Elf32_Off; /* Unsigned file offset */ 31 typedef uint16_t Elf32_Half; /* Unsigned medium integer */ 32 typedef int32_t Elf32_Sword; /* Signed large integer */ 33 typedef uint32_t Elf32_Word; /* Unsigned large integer */ 34 35 typedef uint64_t Elf64_Addr; 36 typedef uint64_t Elf64_Off; 37 typedef uint16_t Elf64_Half; 38 typedef int32_t Elf64_Sword; 39 typedef uint32_t Elf64_Word; 40 typedef int64_t Elf64_Sxword; 41 typedef uint64_t Elf64_Xword; 42 43 /* Unique build id string format when using --build-id. */ 44 #define NT_GNU_BUILD_ID 3 45 46 /* 47 * e_ident[] identification indexes 48 * See http://www.caldera.com/developers/gabi/2000-07-17/ch4.eheader.html 49 */ 50 #define EI_MAG0 0 /* file ID */ 51 #define EI_MAG1 1 /* file ID */ 52 #define EI_MAG2 2 /* file ID */ 53 #define EI_MAG3 3 /* file ID */ 54 #define EI_CLASS 4 /* file class */ 55 #define EI_DATA 5 /* data encoding */ 56 #define EI_VERSION 6 /* ELF header version */ 57 #define EI_OSABI 7 /* OS/ABI ID */ 58 #define EI_ABIVERSION 8 /* ABI version */ 59 #define EI_PAD 9 /* start of pad bytes */ 60 #define EI_NIDENT 16 /* Size of e_ident[] */ 61 62 /* e_ident[] magic number */ 63 #define ELFMAG0 0x7f /* e_ident[EI_MAG0] */ 64 #define ELFMAG1 'E' /* e_ident[EI_MAG1] */ 65 #define ELFMAG2 'L' /* e_ident[EI_MAG2] */ 66 #define ELFMAG3 'F' /* e_ident[EI_MAG3] */ 67 #define ELFMAG "\177ELF" /* magic */ 68 #define SELFMAG 4 /* size of magic */ 69 70 /* e_ident[] file class */ 71 #define ELFCLASSNONE 0 /* invalid */ 72 #define ELFCLASS32 1 /* 32-bit objs */ 73 #define ELFCLASS64 2 /* 64-bit objs */ 74 #define ELFCLASSNUM 3 /* number of classes */ 75 76 /* e_ident[] data encoding */ 77 #define ELFDATANONE 0 /* invalid */ 78 #define ELFDATA2LSB 1 /* Little-Endian */ 79 #define ELFDATA2MSB 2 /* Big-Endian */ 80 #define ELFDATANUM 3 /* number of data encode defines */ 81 82 /* e_ident[] Operating System/ABI */ 83 #define ELFOSABI_SYSV 0 /* UNIX System V ABI */ 84 #define ELFOSABI_NONE 0 /* Same as ELFOSABI_SYSV */ 85 #define ELFOSABI_HPUX 1 /* HP-UX operating system */ 86 #define ELFOSABI_NETBSD 2 /* NetBSD */ 87 #define ELFOSABI_LINUX 3 /* GNU/Linux */ 88 #define ELFOSABI_HURD 4 /* GNU/Hurd */ 89 #define ELFOSABI_86OPEN 5 /* 86Open common IA32 ABI */ 90 #define ELFOSABI_SOLARIS 6 /* Solaris */ 91 #define ELFOSABI_MONTEREY 7 /* Monterey */ 92 #define ELFOSABI_IRIX 8 /* IRIX */ 93 #define ELFOSABI_FREEBSD 9 /* FreeBSD */ 94 #define ELFOSABI_TRU64 10 /* TRU64 UNIX */ 95 #define ELFOSABI_MODESTO 11 /* Novell Modesto */ 96 #define ELFOSABI_OPENBSD 12 /* OpenBSD */ 97 #define ELFOSABI_ARM 97 /* ARM */ 98 #define ELFOSABI_STANDALONE 255 /* Standalone (embedded) application */ 99 100 /* e_ident */ 101 #define IS_ELF(ehdr) ((ehdr).e_ident[EI_MAG0] == ELFMAG0 && \ 102 (ehdr).e_ident[EI_MAG1] == ELFMAG1 && \ 103 (ehdr).e_ident[EI_MAG2] == ELFMAG2 && \ 104 (ehdr).e_ident[EI_MAG3] == ELFMAG3) 105 106 /* e_flags */ 107 #define EF_ARM_EABI_MASK 0xff000000 108 #define EF_ARM_EABI_UNKNOWN 0x00000000 109 #define EF_ARM_EABI_VER1 0x01000000 110 #define EF_ARM_EABI_VER2 0x02000000 111 #define EF_ARM_EABI_VER3 0x03000000 112 #define EF_ARM_EABI_VER4 0x04000000 113 #define EF_ARM_EABI_VER5 0x05000000 114 115 /* ELF Header */ 116 typedef struct elfhdr { 117 unsigned char e_ident[EI_NIDENT]; /* ELF Identification */ 118 Elf32_Half e_type; /* object file type */ 119 Elf32_Half e_machine; /* machine */ 120 Elf32_Word e_version; /* object file version */ 121 Elf32_Addr e_entry; /* virtual entry point */ 122 Elf32_Off e_phoff; /* program header table offset */ 123 Elf32_Off e_shoff; /* section header table offset */ 124 Elf32_Word e_flags; /* processor-specific flags */ 125 Elf32_Half e_ehsize; /* ELF header size */ 126 Elf32_Half e_phentsize; /* program header entry size */ 127 Elf32_Half e_phnum; /* number of program header entries */ 128 Elf32_Half e_shentsize; /* section header entry size */ 129 Elf32_Half e_shnum; /* number of section header entries */ 130 Elf32_Half e_shstrndx; /* section header table's "section 131 header string table" entry offset */ 132 } Elf32_Ehdr; 133 134 typedef struct { 135 unsigned char e_ident[EI_NIDENT]; /* Id bytes */ 136 Elf64_Half e_type; /* file type */ 137 Elf64_Half e_machine; /* machine type */ 138 Elf64_Word e_version; /* version number */ 139 Elf64_Addr e_entry; /* entry point */ 140 Elf64_Off e_phoff; /* Program hdr offset */ 141 Elf64_Off e_shoff; /* Section hdr offset */ 142 Elf64_Word e_flags; /* Processor flags */ 143 Elf64_Half e_ehsize; /* sizeof ehdr */ 144 Elf64_Half e_phentsize; /* Program header entry size */ 145 Elf64_Half e_phnum; /* Number of program headers */ 146 Elf64_Half e_shentsize; /* Section header entry size */ 147 Elf64_Half e_shnum; /* Number of section headers */ 148 Elf64_Half e_shstrndx; /* String table index */ 149 } Elf64_Ehdr; 150 151 /* e_type */ 152 #define ET_NONE 0 /* No file type */ 153 #define ET_REL 1 /* relocatable file */ 154 #define ET_EXEC 2 /* executable file */ 155 #define ET_DYN 3 /* shared object file */ 156 #define ET_CORE 4 /* core file */ 157 #define ET_NUM 5 /* number of types */ 158 #define ET_LOPROC 0xff00 /* reserved range for processor */ 159 #define ET_HIPROC 0xffff /* specific e_type */ 160 161 /* e_machine */ 162 #define EM_NONE 0 /* No Machine */ 163 #define EM_M32 1 /* AT&T WE 32100 */ 164 #define EM_SPARC 2 /* SPARC */ 165 #define EM_386 3 /* Intel 80386 */ 166 #define EM_68K 4 /* Motorola 68000 */ 167 #define EM_88K 5 /* Motorola 88000 */ 168 #define EM_486 6 /* Intel 80486 - unused? */ 169 #define EM_860 7 /* Intel 80860 */ 170 #define EM_MIPS 8 /* MIPS R3000 Big-Endian only */ 171 /* 172 * Don't know if EM_MIPS_RS4_BE, 173 * EM_SPARC64, EM_PARISC, 174 * or EM_PPC are ABI compliant 175 */ 176 #define EM_MIPS_RS4_BE 10 /* MIPS R4000 Big-Endian */ 177 #define EM_SPARC64 11 /* SPARC v9 64-bit unoffical */ 178 #define EM_PARISC 15 /* HPPA */ 179 #define EM_SPARC32PLUS 18 /* Enhanced instruction set SPARC */ 180 #define EM_PPC 20 /* PowerPC */ 181 #define EM_PPC64 21 /* PowerPC 64-bit */ 182 #define EM_ARM 40 /* Advanced RISC Machines ARM */ 183 #define EM_ALPHA 41 /* DEC ALPHA */ 184 #define EM_SPARCV9 43 /* SPARC version 9 */ 185 #define EM_ALPHA_EXP 0x9026 /* DEC ALPHA */ 186 #define EM_IA_64 50 /* Intel Merced */ 187 #define EM_X86_64 62 /* AMD x86-64 architecture */ 188 #define EM_VAX 75 /* DEC VAX */ 189 #define EM_AARCH64 183 /* ARM 64-bit */ 190 191 /* Version */ 192 #define EV_NONE 0 /* Invalid */ 193 #define EV_CURRENT 1 /* Current */ 194 #define EV_NUM 2 /* number of versions */ 195 196 /* Section Header */ 197 typedef struct { 198 Elf32_Word sh_name; /* name - index into section header 199 string table section */ 200 Elf32_Word sh_type; /* type */ 201 Elf32_Word sh_flags; /* flags */ 202 Elf32_Addr sh_addr; /* address */ 203 Elf32_Off sh_offset; /* file offset */ 204 Elf32_Word sh_size; /* section size */ 205 Elf32_Word sh_link; /* section header table index link */ 206 Elf32_Word sh_info; /* extra information */ 207 Elf32_Word sh_addralign; /* address alignment */ 208 Elf32_Word sh_entsize; /* section entry size */ 209 } Elf32_Shdr; 210 211 typedef struct { 212 Elf64_Word sh_name; /* section name */ 213 Elf64_Word sh_type; /* section type */ 214 Elf64_Xword sh_flags; /* section flags */ 215 Elf64_Addr sh_addr; /* virtual address */ 216 Elf64_Off sh_offset; /* file offset */ 217 Elf64_Xword sh_size; /* section size */ 218 Elf64_Word sh_link; /* link to another */ 219 Elf64_Word sh_info; /* misc info */ 220 Elf64_Xword sh_addralign; /* memory alignment */ 221 Elf64_Xword sh_entsize; /* table entry size */ 222 } Elf64_Shdr; 223 224 /* Special Section Indexes */ 225 #define SHN_UNDEF 0 /* undefined */ 226 #define SHN_LORESERVE 0xff00 /* lower bounds of reserved indexes */ 227 #define SHN_LOPROC 0xff00 /* reserved range for processor */ 228 #define SHN_HIPROC 0xff1f /* specific section indexes */ 229 #define SHN_ABS 0xfff1 /* absolute value */ 230 #define SHN_COMMON 0xfff2 /* common symbol */ 231 #define SHN_HIRESERVE 0xffff /* upper bounds of reserved indexes */ 232 233 /* sh_type */ 234 #define SHT_NULL 0 /* inactive */ 235 #define SHT_PROGBITS 1 /* program defined information */ 236 #define SHT_SYMTAB 2 /* symbol table section */ 237 #define SHT_STRTAB 3 /* string table section */ 238 #define SHT_RELA 4 /* relocation section with addends*/ 239 #define SHT_HASH 5 /* symbol hash table section */ 240 #define SHT_DYNAMIC 6 /* dynamic section */ 241 #define SHT_NOTE 7 /* note section */ 242 #define SHT_NOBITS 8 /* no space section */ 243 #define SHT_REL 9 /* relation section without addends */ 244 #define SHT_SHLIB 10 /* reserved - purpose unknown */ 245 #define SHT_DYNSYM 11 /* dynamic symbol table section */ 246 #define SHT_NUM 12 /* number of section types */ 247 #define SHT_LOPROC 0x70000000 /* reserved range for processor */ 248 #define SHT_HIPROC 0x7fffffff /* specific section header types */ 249 #define SHT_LOUSER 0x80000000 /* reserved range for application */ 250 #define SHT_HIUSER 0xffffffff /* specific indexes */ 251 252 /* Section names */ 253 #define ELF_BSS ".bss" /* uninitialized data */ 254 #define ELF_DATA ".data" /* initialized data */ 255 #define ELF_DEBUG ".debug" /* debug */ 256 #define ELF_DYNAMIC ".dynamic" /* dynamic linking information */ 257 #define ELF_DYNSTR ".dynstr" /* dynamic string table */ 258 #define ELF_DYNSYM ".dynsym" /* dynamic symbol table */ 259 #define ELF_FINI ".fini" /* termination code */ 260 #define ELF_GOT ".got" /* global offset table */ 261 #define ELF_HASH ".hash" /* symbol hash table */ 262 #define ELF_INIT ".init" /* initialization code */ 263 #define ELF_REL_DATA ".rel.data" /* relocation data */ 264 #define ELF_REL_FINI ".rel.fini" /* relocation termination code */ 265 #define ELF_REL_INIT ".rel.init" /* relocation initialization code */ 266 #define ELF_REL_DYN ".rel.dyn" /* relocaltion dynamic link info */ 267 #define ELF_REL_RODATA ".rel.rodata" /* relocation read-only data */ 268 #define ELF_REL_TEXT ".rel.text" /* relocation code */ 269 #define ELF_RODATA ".rodata" /* read-only data */ 270 #define ELF_SHSTRTAB ".shstrtab" /* section header string table */ 271 #define ELF_STRTAB ".strtab" /* string table */ 272 #define ELF_SYMTAB ".symtab" /* symbol table */ 273 #define ELF_TEXT ".text" /* code */ 274 275 276 /* Section Attribute Flags - sh_flags */ 277 #define SHF_WRITE 0x1 /* Writable */ 278 #define SHF_ALLOC 0x2 /* occupies memory */ 279 #define SHF_EXECINSTR 0x4 /* executable */ 280 #define SHF_MERGE 0x10 /* mergeable */ 281 #define SHF_MASKPROC 0xf0000000 /* reserved bits for processor */ 282 /* specific section attributes */ 283 284 /* Symbol Table Entry */ 285 typedef struct elf32_sym { 286 Elf32_Word st_name; /* name - index into string table */ 287 Elf32_Addr st_value; /* symbol value */ 288 Elf32_Word st_size; /* symbol size */ 289 unsigned char st_info; /* type and binding */ 290 unsigned char st_other; /* 0 - no defined meaning */ 291 Elf32_Half st_shndx; /* section header index */ 292 } Elf32_Sym; 293 294 typedef struct { 295 Elf64_Word st_name; /* Symbol name index in str table */ 296 unsigned char st_info; /* type / binding attrs */ 297 unsigned char st_other; /* unused */ 298 Elf64_Half st_shndx; /* section index of symbol */ 299 Elf64_Addr st_value; /* value of symbol */ 300 Elf64_Xword st_size; /* size of symbol */ 301 } Elf64_Sym; 302 303 /* Symbol table index */ 304 #define STN_UNDEF 0 /* undefined */ 305 306 /* Extract symbol info - st_info */ 307 #define ELF32_ST_BIND(x) ((x) >> 4) 308 #define ELF32_ST_TYPE(x) (((unsigned int) x) & 0xf) 309 #define ELF32_ST_INFO(b,t) (((b) << 4) + ((t) & 0xf)) 310 311 #define ELF64_ST_BIND(x) ((x) >> 4) 312 #define ELF64_ST_TYPE(x) (((unsigned int) x) & 0xf) 313 #define ELF64_ST_INFO(b,t) (((b) << 4) + ((t) & 0xf)) 314 315 /* Symbol Binding - ELF32_ST_BIND - st_info */ 316 #define STB_LOCAL 0 /* Local symbol */ 317 #define STB_GLOBAL 1 /* Global symbol */ 318 #define STB_WEAK 2 /* like global - lower precedence */ 319 #define STB_NUM 3 /* number of symbol bindings */ 320 #define STB_LOPROC 13 /* reserved range for processor */ 321 #define STB_HIPROC 15 /* specific symbol bindings */ 322 323 /* Symbol type - ELF32_ST_TYPE - st_info */ 324 #define STT_NOTYPE 0 /* not specified */ 325 #define STT_OBJECT 1 /* data object */ 326 #define STT_FUNC 2 /* function */ 327 #define STT_SECTION 3 /* section */ 328 #define STT_FILE 4 /* file */ 329 #define STT_NUM 5 /* number of symbol types */ 330 #define STT_LOPROC 13 /* reserved range for processor */ 331 #define STT_HIPROC 15 /* specific symbol types */ 332 333 /* Relocation entry with implicit addend */ 334 typedef struct { 335 Elf32_Addr r_offset; /* offset of relocation */ 336 Elf32_Word r_info; /* symbol table index and type */ 337 } Elf32_Rel; 338 339 /* Relocation entry with explicit addend */ 340 typedef struct { 341 Elf32_Addr r_offset; /* offset of relocation */ 342 Elf32_Word r_info; /* symbol table index and type */ 343 Elf32_Sword r_addend; 344 } Elf32_Rela; 345 346 /* Extract relocation info - r_info */ 347 #define ELF32_R_SYM(i) ((i) >> 8) 348 #define ELF32_R_TYPE(i) ((unsigned char) (i)) 349 #define ELF32_R_INFO(s,t) (((s) << 8) + (unsigned char)(t)) 350 351 typedef struct { 352 Elf64_Addr r_offset; /* where to do it */ 353 Elf64_Xword r_info; /* index & type of relocation */ 354 } Elf64_Rel; 355 356 typedef struct { 357 Elf64_Addr r_offset; /* where to do it */ 358 Elf64_Xword r_info; /* index & type of relocation */ 359 Elf64_Sxword r_addend; /* adjustment value */ 360 } Elf64_Rela; 361 362 #define ELF64_R_SYM(info) ((info) >> 32) 363 #define ELF64_R_TYPE(info) ((info) & 0xFFFFFFFF) 364 #define ELF64_R_INFO(s,t) (((s) << 32) + (uint32_t)(t)) 365 366 /* 367 * Relocation types for x86_64 and ARM 64. We list only the ones Live Patch 368 * implements. 369 */ 370 #define R_X86_64_NONE 0 /* No reloc */ 371 #define R_X86_64_64 1 /* Direct 64 bit */ 372 #define R_X86_64_PC32 2 /* PC relative 32 bit signed */ 373 #define R_X86_64_PLT32 4 /* 32 bit PLT address */ 374 375 /* 376 * ARM32 relocation types. See 377 * http://infocenter.arm.com/help/topic/com.arm.doc.ihi0044f/IHI0044F_aaelf.pdf 378 * S - address of symbol. 379 * A - addend for relocation (r_addend or need to extract from insn) 380 * P - address of the dest being relocated (derieved from r_offset) 381 */ 382 #define R_ARM_NONE 0 383 #define R_ARM_ABS32 2 /* Direct 32-bit. S+A */ 384 #define R_ARM_REL32 3 /* PC relative. S+A */ 385 #define R_ARM_CALL 28 /* SignExtend([23:0]) << 2. S+A-P */ 386 #define R_ARM_JUMP24 29 /* Same as R_ARM_CALL */ 387 #define R_ARM_MOVW_ABS_NC 43 /* SignExtend([19:16],[11:0])&0xFFFF, S+A */ 388 #define R_ARM_MOVT_ABS 44 /* SignExtend([19:16],[11:0))&0xFFFF0000 */ 389 /* >> 16, S+A. */ 390 391 /* 392 * NC - No check for overflow. 393 * 394 * The defines also use _PREL for PC-relative address, and _NC is No Check. 395 */ 396 #define R_AARCH64_ABS64 257 /* Direct 64 bit. S+A, NC*/ 397 #define R_AARCH64_ABS32 258 /* Direct 32 bit. S+A */ 398 #define R_AARCH64_ABS16 259 /* Direct 16 bit, S+A */ 399 #define R_AARCH64_PREL64 260 /* S+A-P, NC */ 400 #define R_AARCH64_PREL32 261 /* S+A-P */ 401 #define R_AARCH64_PREL16 262 /* S+A-P */ 402 403 /* Instructions. */ 404 #define R_AARCH64_MOVW_UABS_G0 263 405 #define R_AARCH64_MOVW_UABS_G0_NC 264 406 #define R_AARCH64_MOVW_UABS_G1 265 407 #define R_AARCH64_MOVW_UABS_G1_NC 266 408 #define R_AARCH64_MOVW_UABS_G2 267 409 #define R_AARCH64_MOVW_UABS_G2_NC 268 410 #define R_AARCH64_MOVW_UABS_G3 269 411 412 #define R_AARCH64_MOVW_SABS_G0 270 413 #define R_AARCH64_MOVW_SABS_G1 271 414 #define R_AARCH64_MOVW_SABS_G2 272 415 416 #define R_AARCH64_ADR_PREL_LO21 274 /* ADR imm, [20:0]. S+A-P */ 417 #define R_AARCH64_ADR_PREL_PG_HI21 275 /* ADRP imm, [32:12]. Page(S+A) - Page(P).*/ 418 #define R_AARCH64_ADR_PREL_PG_HI21_NC 276 419 #define R_AARCH64_ADD_ABS_LO12_NC 277 /* ADD imm. [11:0]. S+A, NC */ 420 421 #define R_AARCH64_TSTBR14 279 422 #define R_AARCH64_CONDBR19 280 /* Bits 20:2, S+A-P */ 423 #define R_AARCH64_JUMP26 282 /* Bits 27:2, S+A-P */ 424 #define R_AARCH64_CALL26 283 /* Bits 27:2, S+A-P */ 425 #define R_AARCH64_LDST16_ABS_LO12_NC 284 /* LD/ST to bits 11:1, S+A, NC */ 426 #define R_AARCH64_LDST32_ABS_LO12_NC 285 /* LD/ST to bits 11:2, S+A, NC */ 427 #define R_AARCH64_LDST64_ABS_LO12_NC 286 /* LD/ST to bits 11:3, S+A, NC */ 428 #define R_AARCH64_LDST8_ABS_LO12_NC 278 /* LD/ST to bits 11:0, S+A, NC */ 429 #define R_AARCH64_LDST128_ABS_LO12_NC 299 430 431 #define R_AARCH64_MOVW_PREL_G0 287 432 #define R_AARCH64_MOVW_PREL_G0_NC 288 433 #define R_AARCH64_MOVW_PREL_G1 289 434 #define R_AARCH64_MOVW_PREL_G1_NC 290 435 #define R_AARCH64_MOVW_PREL_G2 291 436 #define R_AARCH64_MOVW_PREL_G2_NC 292 437 #define R_AARCH64_MOVW_PREL_G3 293 438 439 /* Program Header */ 440 typedef struct { 441 Elf32_Word p_type; /* segment type */ 442 Elf32_Off p_offset; /* segment offset */ 443 Elf32_Addr p_vaddr; /* virtual address of segment */ 444 Elf32_Addr p_paddr; /* physical address - ignored? */ 445 Elf32_Word p_filesz; /* number of bytes in file for seg. */ 446 Elf32_Word p_memsz; /* number of bytes in mem. for seg. */ 447 Elf32_Word p_flags; /* flags */ 448 Elf32_Word p_align; /* memory alignment */ 449 } Elf32_Phdr; 450 451 typedef struct { 452 Elf64_Word p_type; /* entry type */ 453 Elf64_Word p_flags; /* flags */ 454 Elf64_Off p_offset; /* offset */ 455 Elf64_Addr p_vaddr; /* virtual address */ 456 Elf64_Addr p_paddr; /* physical address */ 457 Elf64_Xword p_filesz; /* file size */ 458 Elf64_Xword p_memsz; /* memory size */ 459 Elf64_Xword p_align; /* memory & file alignment */ 460 } Elf64_Phdr; 461 462 /* Segment types - p_type */ 463 #define PT_NULL 0 /* unused */ 464 #define PT_LOAD 1 /* loadable segment */ 465 #define PT_DYNAMIC 2 /* dynamic linking section */ 466 #define PT_INTERP 3 /* the RTLD */ 467 #define PT_NOTE 4 /* auxiliary information */ 468 #define PT_SHLIB 5 /* reserved - purpose undefined */ 469 #define PT_PHDR 6 /* program header */ 470 #define PT_NUM 7 /* Number of segment types */ 471 #define PT_LOPROC 0x70000000 /* reserved range for processor */ 472 #define PT_HIPROC 0x7fffffff /* specific segment types */ 473 474 /* Segment flags - p_flags */ 475 #define PF_X 0x1 /* Executable */ 476 #define PF_W 0x2 /* Writable */ 477 #define PF_R 0x4 /* Readable */ 478 #define PF_MASKPROC 0xf0000000 /* reserved bits for processor */ 479 /* specific segment flags */ 480 481 /* Dynamic structure */ 482 typedef struct { 483 Elf32_Sword d_tag; /* controls meaning of d_val */ 484 union { 485 Elf32_Word d_val; /* Multiple meanings - see d_tag */ 486 Elf32_Addr d_ptr; /* program virtual address */ 487 } d_un; 488 } Elf32_Dyn; 489 490 typedef struct { 491 Elf64_Sxword d_tag; /* controls meaning of d_val */ 492 union { 493 Elf64_Xword d_val; 494 Elf64_Addr d_ptr; 495 } d_un; 496 } Elf64_Dyn; 497 498 /* Dynamic Array Tags - d_tag */ 499 #define DT_NULL 0 /* marks end of _DYNAMIC array */ 500 #define DT_NEEDED 1 /* string table offset of needed lib */ 501 #define DT_PLTRELSZ 2 /* size of relocation entries in PLT */ 502 #define DT_PLTGOT 3 /* address PLT/GOT */ 503 #define DT_HASH 4 /* address of symbol hash table */ 504 #define DT_STRTAB 5 /* address of string table */ 505 #define DT_SYMTAB 6 /* address of symbol table */ 506 #define DT_RELA 7 /* address of relocation table */ 507 #define DT_RELASZ 8 /* size of relocation table */ 508 #define DT_RELAENT 9 /* size of relocation entry */ 509 #define DT_STRSZ 10 /* size of string table */ 510 #define DT_SYMENT 11 /* size of symbol table entry */ 511 #define DT_INIT 12 /* address of initialization func. */ 512 #define DT_FINI 13 /* address of termination function */ 513 #define DT_SONAME 14 /* string table offset of shared obj */ 514 #define DT_RPATH 15 /* string table offset of library 515 search path */ 516 #define DT_SYMBOLIC 16 /* start sym search in shared obj. */ 517 #define DT_REL 17 /* address of rel. tbl. w addends */ 518 #define DT_RELSZ 18 /* size of DT_REL relocation table */ 519 #define DT_RELENT 19 /* size of DT_REL relocation entry */ 520 #define DT_PLTREL 20 /* PLT referenced relocation entry */ 521 #define DT_DEBUG 21 /* bugger */ 522 #define DT_TEXTREL 22 /* Allow rel. mod. to unwritable seg */ 523 #define DT_JMPREL 23 /* add. of PLT's relocation entries */ 524 #define DT_BIND_NOW 24 /* Bind now regardless of env setting */ 525 #define DT_NUM 25 /* Number used. */ 526 #define DT_LOPROC 0x70000000 /* reserved range for processor */ 527 #define DT_HIPROC 0x7fffffff /* specific dynamic array tags */ 528 529 /* Standard ELF hashing function */ 530 unsigned int elf_hash(const unsigned char *name); 531 532 /* 533 * Note Definitions 534 */ 535 typedef struct { 536 Elf32_Word namesz; 537 Elf32_Word descsz; 538 Elf32_Word type; 539 } Elf32_Note; 540 541 typedef struct { 542 Elf64_Word namesz; 543 Elf64_Word descsz; 544 Elf64_Word type; 545 } Elf64_Note; 546 547 548 #if defined(ELFSIZE) 549 #define CONCAT(x,y) __CONCAT(x,y) 550 #define ELFNAME(x) CONCAT(elf,CONCAT(ELFSIZE,CONCAT(_,x))) 551 #define ELFNAME2(x,y) CONCAT(x,CONCAT(_elf,CONCAT(ELFSIZE,CONCAT(_,y)))) 552 #define ELFNAMEEND(x) CONCAT(x,CONCAT(_elf,ELFSIZE)) 553 #define ELFDEFNNAME(x) CONCAT(ELF,CONCAT(ELFSIZE,CONCAT(_,x))) 554 #endif 555 556 #if defined(ELFSIZE) && (ELFSIZE == 32) 557 #define PRIxElfAddr "08x" 558 #define PRIuElfWord "8u" 559 560 #define Elf_Ehdr Elf32_Ehdr 561 #define Elf_Phdr Elf32_Phdr 562 #define Elf_Shdr Elf32_Shdr 563 #define Elf_Sym Elf32_Sym 564 #define Elf_Rel Elf32_Rel 565 #define Elf_RelA Elf32_Rela 566 #define Elf_Dyn Elf32_Dyn 567 #define Elf_Word Elf32_Word 568 #define Elf_Sword Elf32_Sword 569 #define Elf_Addr Elf32_Addr 570 #define Elf_Off Elf32_Off 571 #define Elf_Nhdr Elf32_Nhdr 572 #define Elf_Note Elf32_Note 573 574 #define ELF_R_SYM ELF32_R_SYM 575 #define ELF_R_TYPE ELF32_R_TYPE 576 #define ELF_R_INFO ELF32_R_INFO 577 #define ELFCLASS ELFCLASS32 578 579 #define ELF_ST_BIND ELF32_ST_BIND 580 #define ELF_ST_TYPE ELF32_ST_TYPE 581 #define ELF_ST_INFO ELF32_ST_INFO 582 583 #define AuxInfo Aux32Info 584 #elif defined(ELFSIZE) && (ELFSIZE == 64) 585 #define PRIxElfAddr PRIx64 586 #define PRIuElfWord PRIu64 587 588 #define Elf_Ehdr Elf64_Ehdr 589 #define Elf_Phdr Elf64_Phdr 590 #define Elf_Shdr Elf64_Shdr 591 #define Elf_Sym Elf64_Sym 592 #define Elf_Rel Elf64_Rel 593 #define Elf_RelA Elf64_Rela 594 #define Elf_Dyn Elf64_Dyn 595 #define Elf_Word Elf64_Word 596 #define Elf_Sword Elf64_Sword 597 #define Elf_Addr Elf64_Addr 598 #define Elf_Off Elf64_Off 599 #define Elf_Nhdr Elf64_Nhdr 600 #define Elf_Note Elf64_Note 601 602 #define ELF_R_SYM ELF64_R_SYM 603 #define ELF_R_TYPE ELF64_R_TYPE 604 #define ELF_R_INFO ELF64_R_INFO 605 #define ELFCLASS ELFCLASS64 606 607 #define ELF_ST_BIND ELF64_ST_BIND 608 #define ELF_ST_TYPE ELF64_ST_TYPE 609 #define ELF_ST_INFO ELF64_ST_INFO 610 611 #define AuxInfo Aux64Info 612 #endif 613 614 #endif /* __XEN_ELFSTRUCTS_H__ */ 615