1/* 2 * Copyright (c) Christos Zoulas 2003. 3 * All Rights Reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice immediately at the beginning of the file, without modification, 10 * 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 * 15 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 16 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 17 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 18 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR 19 * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 20 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 21 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 22 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 23 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 24 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 25 * SUCH DAMAGE. 26 */ 27/* 28 * @(#)Id: readelf.h,v 1.9 2002/05/16 18:45:56 christos Exp 29 * 30 * Provide elf data structures for non-elf machines, allowing file 31 * non-elf hosts to determine if an elf binary is stripped. 32 * Note: cobbled from the linux header file, with modifications 33 */ 34#ifndef __fake_elf_h__ 35#define __fake_elf_h__ 36 37#if HAVE_STDINT_H 38#include <stdint.h> 39#endif 40 41typedef uint32_t Elf32_Addr; 42typedef uint32_t Elf32_Off; 43typedef uint16_t Elf32_Half; 44typedef uint32_t Elf32_Word; 45typedef uint8_t Elf32_Char; 46 47typedef uint64_t Elf64_Addr; 48typedef uint64_t Elf64_Off; 49typedef uint64_t Elf64_Xword; 50typedef uint16_t Elf64_Half; 51typedef uint32_t Elf64_Word; 52typedef uint8_t Elf64_Char; 53 54#define EI_NIDENT 16 55 56typedef struct { 57 Elf32_Word a_type; /* 32-bit id */ 58 Elf32_Word a_v; /* 32-bit id */ 59} Aux32Info; 60 61typedef struct { 62 Elf64_Xword a_type; /* 64-bit id */ 63 Elf64_Xword a_v; /* 64-bit id */ 64} Aux64Info; 65 66#define AT_NULL 0 /* end of vector */ 67#define AT_IGNORE 1 /* entry should be ignored */ 68#define AT_EXECFD 2 /* file descriptor of program */ 69#define AT_PHDR 3 /* program headers for program */ 70#define AT_PHENT 4 /* size of program header entry */ 71#define AT_PHNUM 5 /* number of program headers */ 72#define AT_PAGESZ 6 /* system page size */ 73#define AT_BASE 7 /* base address of interpreter */ 74#define AT_FLAGS 8 /* flags */ 75#define AT_ENTRY 9 /* entry point of program */ 76#define AT_LINUX_NOTELF 10 /* program is not ELF */ 77#define AT_LINUX_UID 11 /* real uid */ 78#define AT_LINUX_EUID 12 /* effective uid */ 79#define AT_LINUX_GID 13 /* real gid */ 80#define AT_LINUX_EGID 14 /* effective gid */ 81#define AT_LINUX_PLATFORM 15 /* string identifying CPU for optimizations */ 82#define AT_LINUX_HWCAP 16 /* arch dependent hints at CPU capabilities */ 83#define AT_LINUX_CLKTCK 17 /* frequency at which times() increments */ 84/* AT_* values 18 through 22 are reserved */ 85#define AT_LINUX_SECURE 23 /* secure mode boolean */ 86#define AT_LINUX_BASE_PLATFORM 24 /* string identifying real platform, may 87 * differ from AT_PLATFORM. */ 88#define AT_LINUX_RANDOM 25 /* address of 16 random bytes */ 89#define AT_LINUX_HWCAP2 26 /* extension of AT_HWCAP */ 90#define AT_LINUX_EXECFN 31 /* filename of program */ 91 92typedef struct { 93 Elf32_Char e_ident[EI_NIDENT]; 94 Elf32_Half e_type; 95 Elf32_Half e_machine; 96 Elf32_Word e_version; 97 Elf32_Addr e_entry; /* Entry point */ 98 Elf32_Off e_phoff; 99 Elf32_Off e_shoff; 100 Elf32_Word e_flags; 101 Elf32_Half e_ehsize; 102 Elf32_Half e_phentsize; 103 Elf32_Half e_phnum; 104 Elf32_Half e_shentsize; 105 Elf32_Half e_shnum; 106 Elf32_Half e_shstrndx; 107} Elf32_Ehdr; 108 109typedef struct { 110 Elf64_Char e_ident[EI_NIDENT]; 111 Elf64_Half e_type; 112 Elf64_Half e_machine; 113 Elf64_Word e_version; 114 Elf64_Addr e_entry; /* Entry point */ 115 Elf64_Off e_phoff; 116 Elf64_Off e_shoff; 117 Elf64_Word e_flags; 118 Elf64_Half e_ehsize; 119 Elf64_Half e_phentsize; 120 Elf64_Half e_phnum; 121 Elf64_Half e_shentsize; 122 Elf64_Half e_shnum; 123 Elf64_Half e_shstrndx; 124} Elf64_Ehdr; 125 126/* e_type */ 127#define ET_REL 1 128#define ET_EXEC 2 129#define ET_DYN 3 130#define ET_CORE 4 131 132/* e_machine (used only for SunOS 5.x hardware capabilities) */ 133#define EM_SPARC 2 134#define EM_386 3 135#define EM_SPARC32PLUS 18 136#define EM_SPARCV9 43 137#define EM_IA_64 50 138#define EM_AMD64 62 139 140/* sh_type */ 141#define SHT_SYMTAB 2 142#define SHT_NOTE 7 143#define SHT_DYNSYM 11 144#define SHT_SUNW_cap 0x6ffffff5 /* SunOS 5.x hw/sw capabilities */ 145 146/* elf type */ 147#define ELFDATANONE 0 /* e_ident[EI_DATA] */ 148#define ELFDATA2LSB 1 149#define ELFDATA2MSB 2 150 151/* elf class */ 152#define ELFCLASSNONE 0 153#define ELFCLASS32 1 154#define ELFCLASS64 2 155 156/* magic number */ 157#define EI_MAG0 0 /* e_ident[] indexes */ 158#define EI_MAG1 1 159#define EI_MAG2 2 160#define EI_MAG3 3 161#define EI_CLASS 4 162#define EI_DATA 5 163#define EI_VERSION 6 164#define EI_PAD 7 165 166#define ELFMAG0 0x7f /* EI_MAG */ 167#define ELFMAG1 'E' 168#define ELFMAG2 'L' 169#define ELFMAG3 'F' 170#define ELFMAG "\177ELF" 171 172#define OLFMAG1 'O' 173#define OLFMAG "\177OLF" 174 175typedef struct { 176 Elf32_Word p_type; 177 Elf32_Off p_offset; 178 Elf32_Addr p_vaddr; 179 Elf32_Addr p_paddr; 180 Elf32_Word p_filesz; 181 Elf32_Word p_memsz; 182 Elf32_Word p_flags; 183 Elf32_Word p_align; 184} Elf32_Phdr; 185 186typedef struct { 187 Elf64_Word p_type; 188 Elf64_Word p_flags; 189 Elf64_Off p_offset; 190 Elf64_Addr p_vaddr; 191 Elf64_Addr p_paddr; 192 Elf64_Xword p_filesz; 193 Elf64_Xword p_memsz; 194 Elf64_Xword p_align; 195} Elf64_Phdr; 196 197#define PT_NULL 0 /* p_type */ 198#define PT_LOAD 1 199#define PT_DYNAMIC 2 200#define PT_INTERP 3 201#define PT_NOTE 4 202#define PT_SHLIB 5 203#define PT_PHDR 6 204#define PT_NUM 7 205 206typedef struct { 207 Elf32_Word sh_name; 208 Elf32_Word sh_type; 209 Elf32_Word sh_flags; 210 Elf32_Addr sh_addr; 211 Elf32_Off sh_offset; 212 Elf32_Word sh_size; 213 Elf32_Word sh_link; 214 Elf32_Word sh_info; 215 Elf32_Word sh_addralign; 216 Elf32_Word sh_entsize; 217} Elf32_Shdr; 218 219typedef struct { 220 Elf64_Word sh_name; 221 Elf64_Word sh_type; 222 Elf64_Off sh_flags; 223 Elf64_Addr sh_addr; 224 Elf64_Off sh_offset; 225 Elf64_Off sh_size; 226 Elf64_Word sh_link; 227 Elf64_Word sh_info; 228 Elf64_Off sh_addralign; 229 Elf64_Off sh_entsize; 230} Elf64_Shdr; 231 232#define NT_NETBSD_CORE_PROCINFO 1 233#define NT_NETBSD_CORE_AUXV 2 234 235struct NetBSD_elfcore_procinfo { 236 /* Version 1 fields start here. */ 237 uint32_t cpi_version; /* our version */ 238 uint32_t cpi_cpisize; /* sizeof(this struct) */ 239 uint32_t cpi_signo; /* killing signal */ 240 uint32_t cpi_sigcode; /* signal code */ 241 uint32_t cpi_sigpend[4]; /* pending signals */ 242 uint32_t cpi_sigmask[4]; /* blocked signals */ 243 uint32_t cpi_sigignore[4]; /* ignored signals */ 244 uint32_t cpi_sigcatch[4]; /* caught signals */ 245 int32_t cpi_pid; /* process ID */ 246 int32_t cpi_ppid; /* parent process ID */ 247 int32_t cpi_pgrp; /* process group ID */ 248 int32_t cpi_sid; /* session ID */ 249 uint32_t cpi_ruid; /* real user ID */ 250 uint32_t cpi_euid; /* effective user ID */ 251 uint32_t cpi_svuid; /* saved user ID */ 252 uint32_t cpi_rgid; /* real group ID */ 253 uint32_t cpi_egid; /* effective group ID */ 254 uint32_t cpi_svgid; /* saved group ID */ 255 uint32_t cpi_nlwps; /* number of LWPs */ 256 int8_t cpi_name[32]; /* copy of p->p_comm */ 257 /* Add version 2 fields below here. */ 258 int32_t cpi_siglwp; /* LWP target of killing signal */ 259}; 260 261/* Note header in a PT_NOTE section */ 262typedef struct elf_note { 263 Elf32_Word n_namesz; /* Name size */ 264 Elf32_Word n_descsz; /* Content size */ 265 Elf32_Word n_type; /* Content type */ 266} Elf32_Nhdr; 267 268typedef struct { 269 Elf64_Word n_namesz; 270 Elf64_Word n_descsz; 271 Elf64_Word n_type; 272} Elf64_Nhdr; 273 274/* Notes used in ET_CORE */ 275#define NT_PRSTATUS 1 276#define NT_PRFPREG 2 277#define NT_PRPSINFO 3 278#define NT_PRXREG 4 279#define NT_TASKSTRUCT 4 280#define NT_PLATFORM 5 281#define NT_AUXV 6 282 283/* Note types used in executables */ 284/* NetBSD executables (name = "NetBSD") */ 285#define NT_NETBSD_VERSION 1 286#define NT_NETBSD_EMULATION 2 287#define NT_FREEBSD_VERSION 1 288#define NT_OPENBSD_VERSION 1 289#define NT_DRAGONFLY_VERSION 1 290/* 291 * GNU executables (name = "GNU") 292 * word[0]: GNU OS tags 293 * word[1]: major version 294 * word[2]: minor version 295 * word[3]: tiny version 296 */ 297#define NT_GNU_VERSION 1 298 299/* GNU OS tags */ 300#define GNU_OS_LINUX 0 301#define GNU_OS_HURD 1 302#define GNU_OS_SOLARIS 2 303#define GNU_OS_KFREEBSD 3 304#define GNU_OS_KNETBSD 4 305 306/* 307 * GNU Hardware capability information 308 * word[0]: Number of entries 309 * word[1]: Bitmask of enabled entries 310 * Followed by a byte id, and a NUL terminated string per entry 311 */ 312#define NT_GNU_HWCAP 2 313 314/* 315 * GNU Build ID generated by ld 316 * 160 bit SHA1 [default] 317 * 128 bit md5 or uuid 318 */ 319#define NT_GNU_BUILD_ID 3 320 321/* 322 * NetBSD-specific note type: PaX. 323 * There should be 1 NOTE per executable. 324 * name: PaX\0 325 * namesz: 4 326 * desc: 327 * word[0]: capability bitmask 328 * descsz: 4 329 */ 330#define NT_NETBSD_PAX 3 331#define NT_NETBSD_PAX_MPROTECT 0x01 /* Force enable Mprotect */ 332#define NT_NETBSD_PAX_NOMPROTECT 0x02 /* Force disable Mprotect */ 333#define NT_NETBSD_PAX_GUARD 0x04 /* Force enable Segvguard */ 334#define NT_NETBSD_PAX_NOGUARD 0x08 /* Force disable Servguard */ 335#define NT_NETBSD_PAX_ASLR 0x10 /* Force enable ASLR */ 336#define NT_NETBSD_PAX_NOASLR 0x20 /* Force disable ASLR */ 337 338/* 339 * NetBSD-specific note type: MACHINE_ARCH. 340 * There should be 1 NOTE per executable. 341 * name: NetBSD\0 342 * namesz: 7 343 * desc: string 344 * descsz: variable 345 */ 346#define NT_NETBSD_MARCH 5 347 348/* 349 * NetBSD-specific note type: COMPILER MODEL. 350 * There should be 1 NOTE per executable. 351 * name: NetBSD\0 352 * namesz: 7 353 * desc: string 354 * descsz: variable 355 */ 356#define NT_NETBSD_CMODEL 6 357 358/* 359 * Golang-specific note type 360 * name: Go\0\0 361 * namesz: 4 362 * desc: base-64 build id. 363 * descsz: < 128 364 */ 365#define NT_GO_BUILD_ID 4 366 367/* 368 * FreeBSD specific notes 369 */ 370#define NT_FREEBSD_PROCSTAT_AUXV 16 371 372#if !defined(ELFSIZE) && defined(ARCH_ELFSIZE) 373#define ELFSIZE ARCH_ELFSIZE 374#endif 375/* SunOS 5.x hardware/software capabilities */ 376typedef struct { 377 Elf32_Word c_tag; 378 union { 379 Elf32_Word c_val; 380 Elf32_Addr c_ptr; 381 } c_un; 382} Elf32_Cap; 383 384typedef struct { 385 Elf64_Xword c_tag; 386 union { 387 Elf64_Xword c_val; 388 Elf64_Addr c_ptr; 389 } c_un; 390} Elf64_Cap; 391 392/* SunOS 5.x hardware/software capability tags */ 393#define CA_SUNW_NULL 0 394#define CA_SUNW_HW_1 1 395#define CA_SUNW_SF_1 2 396 397/* SunOS 5.x software capabilities */ 398#define SF1_SUNW_FPKNWN 0x01 399#define SF1_SUNW_FPUSED 0x02 400#define SF1_SUNW_MASK 0x03 401 402/* SunOS 5.x hardware capabilities: sparc */ 403#define AV_SPARC_MUL32 0x0001 404#define AV_SPARC_DIV32 0x0002 405#define AV_SPARC_FSMULD 0x0004 406#define AV_SPARC_V8PLUS 0x0008 407#define AV_SPARC_POPC 0x0010 408#define AV_SPARC_VIS 0x0020 409#define AV_SPARC_VIS2 0x0040 410#define AV_SPARC_ASI_BLK_INIT 0x0080 411#define AV_SPARC_FMAF 0x0100 412#define AV_SPARC_FJFMAU 0x4000 413#define AV_SPARC_IMA 0x8000 414 415/* SunOS 5.x hardware capabilities: 386 */ 416#define AV_386_FPU 0x00000001 417#define AV_386_TSC 0x00000002 418#define AV_386_CX8 0x00000004 419#define AV_386_SEP 0x00000008 420#define AV_386_AMD_SYSC 0x00000010 421#define AV_386_CMOV 0x00000020 422#define AV_386_MMX 0x00000040 423#define AV_386_AMD_MMX 0x00000080 424#define AV_386_AMD_3DNow 0x00000100 425#define AV_386_AMD_3DNowx 0x00000200 426#define AV_386_FXSR 0x00000400 427#define AV_386_SSE 0x00000800 428#define AV_386_SSE2 0x00001000 429#define AV_386_PAUSE 0x00002000 430#define AV_386_SSE3 0x00004000 431#define AV_386_MON 0x00008000 432#define AV_386_CX16 0x00010000 433#define AV_386_AHF 0x00020000 434#define AV_386_TSCP 0x00040000 435#define AV_386_AMD_SSE4A 0x00080000 436#define AV_386_POPCNT 0x00100000 437#define AV_386_AMD_LZCNT 0x00200000 438#define AV_386_SSSE3 0x00400000 439#define AV_386_SSE4_1 0x00800000 440#define AV_386_SSE4_2 0x01000000 441 442/* 443 * Dynamic Section structure array 444 */ 445typedef struct { 446 Elf32_Word d_tag; /* entry tag value */ 447 union { 448 Elf32_Addr d_ptr; 449 Elf32_Word d_val; 450 } d_un; 451} Elf32_Dyn; 452 453typedef struct { 454 Elf64_Xword d_tag; /* entry tag value */ 455 union { 456 Elf64_Addr d_ptr; 457 Elf64_Xword d_val; 458 } d_un; 459} Elf64_Dyn; 460 461/* d_tag */ 462#define DT_NULL 0 /* Marks end of dynamic array */ 463#define DT_NEEDED 1 /* Name of needed library (DT_STRTAB offset) */ 464#define DT_PLTRELSZ 2 /* Size, in bytes, of relocations in PLT */ 465#define DT_PLTGOT 3 /* Address of PLT and/or GOT */ 466#define DT_HASH 4 /* Address of symbol hash table */ 467#define DT_STRTAB 5 /* Address of string table */ 468#define DT_SYMTAB 6 /* Address of symbol table */ 469#define DT_RELA 7 /* Address of Rela relocation table */ 470#define DT_RELASZ 8 /* Size, in bytes, of DT_RELA table */ 471#define DT_RELAENT 9 /* Size, in bytes, of one DT_RELA entry */ 472#define DT_STRSZ 10 /* Size, in bytes, of DT_STRTAB table */ 473#define DT_SYMENT 11 /* Size, in bytes, of one DT_SYMTAB entry */ 474#define DT_INIT 12 /* Address of initialization function */ 475#define DT_FINI 13 /* Address of termination function */ 476#define DT_SONAME 14 /* Shared object name (DT_STRTAB offset) */ 477#define DT_RPATH 15 /* Library search path (DT_STRTAB offset) */ 478#define DT_SYMBOLIC 16 /* Start symbol search within local object */ 479#define DT_REL 17 /* Address of Rel relocation table */ 480#define DT_RELSZ 18 /* Size, in bytes, of DT_REL table */ 481#define DT_RELENT 19 /* Size, in bytes, of one DT_REL entry */ 482#define DT_PLTREL 20 /* Type of PLT relocation entries */ 483#define DT_DEBUG 21 /* Used for debugging; unspecified */ 484#define DT_TEXTREL 22 /* Relocations might modify non-writable seg */ 485#define DT_JMPREL 23 /* Address of relocations associated with PLT */ 486#define DT_BIND_NOW 24 /* Process all relocations at load-time */ 487#define DT_INIT_ARRAY 25 /* Address of initialization function array */ 488#define DT_FINI_ARRAY 26 /* Size, in bytes, of DT_INIT_ARRAY array */ 489#define DT_INIT_ARRAYSZ 27 /* Address of termination function array */ 490#define DT_FINI_ARRAYSZ 28 /* Size, in bytes, of DT_FINI_ARRAY array*/ 491#define DT_RUNPATH 29 /* overrides DT_RPATH */ 492#define DT_FLAGS 30 /* Encodes ORIGIN, SYMBOLIC, TEXTREL, BIND_NOW, STATIC_TLS */ 493#define DT_ENCODING 31 /* ??? */ 494#define DT_PREINIT_ARRAY 32 /* Address of pre-init function array */ 495#define DT_PREINIT_ARRAYSZ 33 /* Size, in bytes, of DT_PREINIT_ARRAY array */ 496#define DT_NUM 34 497 498#define DT_LOOS 0x60000000 /* Operating system specific range */ 499#define DT_VERSYM 0x6ffffff0 /* Symbol versions */ 500#define DT_FLAGS_1 0x6ffffffb /* ELF dynamic flags */ 501#define DT_VERDEF 0x6ffffffc /* Versions defined by file */ 502#define DT_VERDEFNUM 0x6ffffffd /* Number of versions defined by file */ 503#define DT_VERNEED 0x6ffffffe /* Versions needed by file */ 504#define DT_VERNEEDNUM 0x6fffffff /* Number of versions needed by file */ 505#define DT_HIOS 0x6fffffff 506#define DT_LOPROC 0x70000000 /* Processor-specific range */ 507#define DT_HIPROC 0x7fffffff 508 509/* Flag values for DT_FLAGS */ 510#define DF_ORIGIN 0x00000001 /* uses $ORIGIN */ 511#define DF_SYMBOLIC 0x00000002 /* */ 512#define DF_TEXTREL 0x00000004 /* */ 513#define DF_BIND_NOW 0x00000008 /* */ 514#define DF_STATIC_TLS 0x00000010 /* */ 515 516/* Flag values for DT_FLAGS_1 */ 517#define DF_1_NOW 0x00000001 /* Same as DF_BIND_NOW */ 518#define DF_1_GLOBAL 0x00000002 /* Unused */ 519#define DF_1_GROUP 0x00000004 /* Is member of group */ 520#define DF_1_NODELETE 0x00000008 /* Cannot be deleted from process */ 521#define DF_1_LOADFLTR 0x00000010 /* Immediate loading of filters */ 522#define DF_1_INITFIRST 0x00000020 /* init/fini takes priority */ 523#define DF_1_NOOPEN 0x00000040 /* Do not allow loading on dlopen() */ 524#define DF_1_ORIGIN 0x00000080 /* Require $ORIGIN processing */ 525#define DF_1_DIRECT 0x00000100 /* Enable direct bindings */ 526#define DF_1_INTERPOSE 0x00000400 /* Is an interposer */ 527#define DF_1_NODEFLIB 0x00000800 /* Ignore default library search path */ 528#define DF_1_NODUMP 0x00001000 /* Cannot be dumped with dldump(3C) */ 529#define DF_1_CONFALT 0x00002000 /* Configuration alternative */ 530#define DF_1_ENDFILTEE 0x00004000 /* Filtee ends filter's search */ 531#define DF_1_DISPRELDNE 0x00008000 /* Did displacement relocation */ 532#define DF_1_DISPRELPND 0x00010000 /* Pending displacement relocation */ 533#define DF_1_NODIRECT 0x00020000 /* Has non-direct bindings */ 534#define DF_1_IGNMULDEF 0x00040000 /* Used internally */ 535#define DF_1_NOKSYMS 0x00080000 /* Used internally */ 536#define DF_1_NOHDR 0x00100000 /* Used internally */ 537#define DF_1_EDITED 0x00200000 /* Has been modified since build */ 538#define DF_1_NORELOC 0x00400000 /* Used internally */ 539#define DF_1_SYMINTPOSE 0x00800000 /* Has individual symbol interposers */ 540#define DF_1_GLOBAUDIT 0x01000000 /* Require global auditing */ 541#define DF_1_SINGLETON 0x02000000 /* Has singleton symbols */ 542#define DF_1_STUB 0x04000000 /* Stub */ 543#define DF_1_PIE 0x08000000 /* Position Independent Executable */ 544 545#endif 546