1/* $NetBSD: exec_elf.h,v 1.3 2022/05/28 22:00:56 andvar Exp $ */ 2 3/*- 4 * Copyright (c) 1994 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * This code is derived from software contributed to The NetBSD Foundation 8 * by Christos Zoulas. 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 19 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 20 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 21 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 22 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 23 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 24 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 25 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 26 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 27 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 28 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 29 * POSSIBILITY OF SUCH DAMAGE. 30 */ 31 32#ifndef _SYS_EXEC_ELF_H_ 33#define _SYS_EXEC_ELF_H_ 34 35/* 36 * The current ELF ABI specification is available at: 37 * http://www.sco.com/developers/gabi/ 38 * 39 * Current header definitions are in: 40 * http://www.sco.com/developers/gabi/latest/ch4.eheader.html 41 */ 42 43#if defined(_KERNEL) || defined(_STANDALONE) 44#include <sys/types.h> 45#else 46#include <inttypes.h> 47#include <stddef.h> 48#endif /* _KERNEL || _STANDALONE */ 49 50#if 0 51#if HAVE_NBTOOL_CONFIG_H 52#include <nbinclude/machine/elf_machdep.h> 53#else 54#include <machine/elf_machdep.h> 55#endif 56#endif 57 58typedef uint8_t Elf_Byte; 59 60typedef uint32_t Elf32_Addr; 61#define ELF32_FSZ_ADDR 4 62typedef uint32_t Elf32_Off; 63typedef int32_t Elf32_SOff; 64#define ELF32_FSZ_OFF 4 65typedef int32_t Elf32_Sword; 66#define ELF32_FSZ_SWORD 4 67typedef uint32_t Elf32_Word; 68#define ELF32_FSZ_WORD 4 69typedef uint16_t Elf32_Half; 70#define ELF32_FSZ_HALF 2 71typedef uint64_t Elf32_Lword; 72#define ELF32_FSZ_LWORD 8 73 74typedef uint64_t Elf64_Addr; 75#define ELF64_FSZ_ADDR 8 76typedef uint64_t Elf64_Off; 77typedef int64_t Elf64_SOff; 78#define ELF64_FSZ_OFF 8 79 80typedef int32_t Elf64_Sword; 81#define ELF64_FSZ_SWORD 4 82typedef uint32_t Elf64_Word; 83#define ELF64_FSZ_WORD 4 84 85typedef int64_t Elf64_Sxword; 86#define ELF64_FSZ_SXWORD 8 87typedef uint64_t Elf64_Xword; 88#define ELF64_FSZ_XWORD 8 89typedef uint64_t Elf64_Lword; 90#define ELF64_FSZ_LWORD 8 91typedef uint16_t Elf64_Half; 92#define ELF64_FSZ_HALF 2 93 94/* 95 * ELF Header 96 */ 97#define ELF_NIDENT 16 98 99typedef struct { 100 unsigned char e_ident[ELF_NIDENT]; /* Id bytes */ 101 Elf32_Half e_type; /* file type */ 102 Elf32_Half e_machine; /* machine type */ 103 Elf32_Word e_version; /* version number */ 104 Elf32_Addr e_entry; /* entry point */ 105 Elf32_Off e_phoff; /* Program hdr offset */ 106 Elf32_Off e_shoff; /* Section hdr offset */ 107 Elf32_Word e_flags; /* Processor flags */ 108 Elf32_Half e_ehsize; /* sizeof ehdr */ 109 Elf32_Half e_phentsize; /* Program header entry size */ 110 Elf32_Half e_phnum; /* Number of program headers */ 111 Elf32_Half e_shentsize; /* Section header entry size */ 112 Elf32_Half e_shnum; /* Number of section headers */ 113 Elf32_Half e_shstrndx; /* String table index */ 114} Elf32_Ehdr; 115 116typedef struct { 117 unsigned char e_ident[ELF_NIDENT]; /* Id bytes */ 118 Elf64_Half e_type; /* file type */ 119 Elf64_Half e_machine; /* machine type */ 120 Elf64_Word e_version; /* version number */ 121 Elf64_Addr e_entry; /* entry point */ 122 Elf64_Off e_phoff; /* Program hdr offset */ 123 Elf64_Off e_shoff; /* Section hdr offset */ 124 Elf64_Word e_flags; /* Processor flags */ 125 Elf64_Half e_ehsize; /* sizeof ehdr */ 126 Elf64_Half e_phentsize; /* Program header entry size */ 127 Elf64_Half e_phnum; /* Number of program headers */ 128 Elf64_Half e_shentsize; /* Section header entry size */ 129 Elf64_Half e_shnum; /* Number of section headers */ 130 Elf64_Half e_shstrndx; /* String table index */ 131} Elf64_Ehdr; 132 133/* e_ident offsets */ 134#define EI_MAG0 0 /* '\177' */ 135#define EI_MAG1 1 /* 'E' */ 136#define EI_MAG2 2 /* 'L' */ 137#define EI_MAG3 3 /* 'F' */ 138#define EI_CLASS 4 /* File class */ 139#define EI_DATA 5 /* Data encoding */ 140#define EI_VERSION 6 /* File version */ 141#define EI_OSABI 7 /* Operating system/ABI identification */ 142#define EI_ABIVERSION 8 /* ABI version */ 143#define EI_PAD 9 /* Start of padding bytes up to EI_NIDENT*/ 144#define EI_NIDENT 16 /* First non-ident header byte */ 145 146/* e_ident[EI_MAG0,EI_MAG3] */ 147#define ELFMAG0 0x7f 148#define ELFMAG1 'E' 149#define ELFMAG2 'L' 150#define ELFMAG3 'F' 151#define ELFMAG "\177ELF" 152#define SELFMAG 4 153 154/* e_ident[EI_CLASS] */ 155#define ELFCLASSNONE 0 /* Invalid class */ 156#define ELFCLASS32 1 /* 32-bit objects */ 157#define ELFCLASS64 2 /* 64-bit objects */ 158#define ELFCLASSNUM 3 159 160/* e_ident[EI_DATA] */ 161#define ELFDATANONE 0 /* Invalid data encoding */ 162#define ELFDATA2LSB 1 /* 2's complement values, LSB first */ 163#define ELFDATA2MSB 2 /* 2's complement values, MSB first */ 164 165/* e_ident[EI_VERSION] */ 166#define EV_NONE 0 /* Invalid version */ 167#define EV_CURRENT 1 /* Current version */ 168#define EV_NUM 2 169 170/* e_ident[EI_OSABI] */ 171#define ELFOSABI_SYSV 0 /* UNIX System V ABI */ 172#define ELFOSABI_HPUX 1 /* HP-UX operating system */ 173#define ELFOSABI_NETBSD 2 /* NetBSD */ 174#define ELFOSABI_LINUX 3 /* GNU/Linux */ 175#define ELFOSABI_HURD 4 /* GNU/Hurd */ 176#define ELFOSABI_86OPEN 5 /* 86Open */ 177#define ELFOSABI_SOLARIS 6 /* Solaris */ 178#define ELFOSABI_MONTEREY 7 /* Monterey */ 179#define ELFOSABI_IRIX 8 /* IRIX */ 180#define ELFOSABI_FREEBSD 9 /* FreeBSD */ 181#define ELFOSABI_TRU64 10 /* TRU64 UNIX */ 182#define ELFOSABI_MODESTO 11 /* Novell Modesto */ 183#define ELFOSABI_OPENBSD 12 /* OpenBSD */ 184#define ELFOSABI_OPENVMS 13 /* OpenVMS */ 185#define ELFOSABI_NSK 14 /* HP Non-Stop Kernel */ 186#define ELFOSABI_AROS 15 /* Amiga Research OS */ 187/* Unofficial OSABIs follow */ 188#define ELFOSABI_ARM 97 /* ARM */ 189#define ELFOSABI_STANDALONE 255 /* Standalone (embedded) application */ 190 191#define ELFOSABI_NONE ELFOSABI_SYSV 192#define ELFOSABI_AIX ELFOSABI_MONTEREY 193 194/* e_type */ 195#define ET_NONE 0 /* No file type */ 196#define ET_REL 1 /* Relocatable file */ 197#define ET_EXEC 2 /* Executable file */ 198#define ET_DYN 3 /* Shared object file */ 199#define ET_CORE 4 /* Core file */ 200#define ET_NUM 5 201 202#define ET_LOOS 0xfe00 /* Operating system specific range */ 203#define ET_HIOS 0xfeff 204#define ET_LOPROC 0xff00 /* Processor-specific range */ 205#define ET_HIPROC 0xffff 206 207/* e_machine */ 208#define EM_NONE 0 /* No machine */ 209#define EM_M32 1 /* AT&T WE 32100 */ 210#define EM_SPARC 2 /* SPARC */ 211#define EM_386 3 /* Intel 80386 */ 212#define EM_68K 4 /* Motorola 68000 */ 213#define EM_88K 5 /* Motorola 88000 */ 214#define EM_486 6 /* Intel 80486 [old] */ 215#define EM_IAMCU 6 /* Intel MCU. */ 216#define EM_860 7 /* Intel 80860 */ 217#define EM_MIPS 8 /* MIPS I Architecture */ 218#define EM_S370 9 /* Amdahl UTS on System/370 */ 219#define EM_MIPS_RS3_LE 10 /* MIPS RS3000 Little-endian */ 220 /* 11-14 - Reserved */ 221#define EM_RS6000 11 /* IBM RS/6000 XXX reserved */ 222#define EM_PARISC 15 /* Hewlett-Packard PA-RISC */ 223#define EM_NCUBE 16 /* NCube XXX reserved */ 224#define EM_VPP500 17 /* Fujitsu VPP500 */ 225#define EM_SPARC32PLUS 18 /* Enhanced instruction set SPARC */ 226#define EM_960 19 /* Intel 80960 */ 227#define EM_PPC 20 /* PowerPC */ 228#define EM_PPC64 21 /* 64-bit PowerPC */ 229 /* 22-35 - Reserved */ 230#define EM_S390 22 /* System/390 XXX reserved */ 231#define EM_V800 36 /* NEC V800 */ 232#define EM_FR20 37 /* Fujitsu FR20 */ 233#define EM_RH32 38 /* TRW RH-32 */ 234#define EM_RCE 39 /* Motorola RCE */ 235#define EM_ARM 40 /* Advanced RISC Machines ARM */ 236#define EM_ALPHA 41 /* DIGITAL Alpha */ 237#define EM_SH 42 /* Hitachi Super-H */ 238#define EM_SPARCV9 43 /* SPARC Version 9 */ 239#define EM_TRICORE 44 /* Siemens Tricore */ 240#define EM_ARC 45 /* Argonaut RISC Core */ 241#define EM_H8_300 46 /* Hitachi H8/300 */ 242#define EM_H8_300H 47 /* Hitachi H8/300H */ 243#define EM_H8S 48 /* Hitachi H8S */ 244#define EM_H8_500 49 /* Hitachi H8/500 */ 245#define EM_IA_64 50 /* Intel Merced Processor */ 246#define EM_MIPS_X 51 /* Stanford MIPS-X */ 247#define EM_COLDFIRE 52 /* Motorola Coldfire */ 248#define EM_68HC12 53 /* Motorola MC68HC12 */ 249#define EM_MMA 54 /* Fujitsu MMA Multimedia Accelerator */ 250#define EM_PCP 55 /* Siemens PCP */ 251#define EM_NCPU 56 /* Sony nCPU embedded RISC processor */ 252#define EM_NDR1 57 /* Denso NDR1 microprocessor */ 253#define EM_STARCORE 58 /* Motorola Star*Core processor */ 254#define EM_ME16 59 /* Toyota ME16 processor */ 255#define EM_ST100 60 /* STMicroelectronics ST100 processor */ 256#define EM_TINYJ 61 /* Advanced Logic Corp. TinyJ embedded family processor */ 257#define EM_X86_64 62 /* AMD x86-64 architecture */ 258#define EM_PDSP 63 /* Sony DSP Processor */ 259#define EM_PDP10 64 /* Digital Equipment Corp. PDP-10 */ 260#define EM_PDP11 65 /* Digital Equipment Corp. PDP-11 */ 261#define EM_FX66 66 /* Siemens FX66 microcontroller */ 262#define EM_ST9PLUS 67 /* STMicroelectronics ST9+ 8/16 bit microcontroller */ 263#define EM_ST7 68 /* STMicroelectronics ST7 8-bit microcontroller */ 264#define EM_68HC16 69 /* Motorola MC68HC16 Microcontroller */ 265#define EM_68HC11 70 /* Motorola MC68HC11 Microcontroller */ 266#define EM_68HC08 71 /* Motorola MC68HC08 Microcontroller */ 267#define EM_68HC05 72 /* Motorola MC68HC05 Microcontroller */ 268#define EM_SVX 73 /* Silicon Graphics SVx */ 269#define EM_ST19 74 /* STMicroelectronics ST19 8-bit CPU */ 270#define EM_VAX 75 /* Digital VAX */ 271#define EM_CRIS 76 /* Axis Communications 32-bit embedded processor */ 272#define EM_JAVELIN 77 /* Infineon Technologies 32-bit embedded CPU */ 273#define EM_FIREPATH 78 /* Element 14 64-bit DSP processor */ 274#define EM_ZSP 79 /* LSI Logic's 16-bit DSP processor */ 275#define EM_MMIX 80 /* Donald Knuth's educational 64-bit processor */ 276#define EM_HUANY 81 /* Harvard's machine-independent format */ 277#define EM_PRISM 82 /* SiTera Prism */ 278#define EM_AVR 83 /* Atmel AVR 8-bit microcontroller */ 279#define EM_FR30 84 /* Fujitsu FR30 */ 280#define EM_D10V 85 /* Mitsubishi D10V */ 281#define EM_D30V 86 /* Mitsubishi D30V */ 282#define EM_V850 87 /* NEC v850 */ 283#define EM_M32R 88 /* Mitsubishi M32R */ 284#define EM_MN10300 89 /* Matsushita MN10300 */ 285#define EM_MN10200 90 /* Matsushita MN10200 */ 286#define EM_PJ 91 /* picoJava */ 287#define EM_OR1K 92 /* OpenRISC 32-bit embedded processor */ 288#define EM_OPENRISC EM_OR1K 289#define EM_ARC_A5 93 /* ARC Cores Tangent-A5 */ 290#define EM_XTENSA 94 /* Tensilica Xtensa Architecture */ 291#define EM_VIDEOCORE 95 /* Alphamosaic VideoCore processor */ 292#define EM_TMM_GPP 96 /* Thompson Multimedia General Purpose Processor */ 293#define EM_NS32K 97 /* National Semiconductor 32000 series */ 294#define EM_TPC 98 /* Tenor Network TPC processor */ 295#define EM_SNP1K 99 /* Trebia SNP 1000 processor */ 296#define EM_ST200 100 /* STMicroelectronics ST200 microcontroller */ 297#define EM_IP2K 101 /* Ubicom IP2xxx microcontroller family */ 298#define EM_MAX 102 /* MAX processor */ 299#define EM_CR 103 /* National Semiconductor CompactRISC micorprocessor */ 300#define EM_F2MC16 104 /* Fujitsu F2MC16 */ 301#define EM_MSP430 105 /* Texas Instruments MSP430 */ 302#define EM_BLACKFIN 106 /* Analog Devices Blackfin DSP */ 303#define EM_SE_C33 107 /* Seiko Epson S1C33 family */ 304#define EM_SEP 108 /* Sharp embedded microprocessor */ 305#define EM_ARCA 109 /* Arca RISC microprocessor */ 306#define EM_UNICORE 110 /* UNICORE from PKU-Unity Ltd. and MPRC Peking University */ 307#define EM_ALTERA_NIOS2 113 /* Altera Nios II soft-core processor */ 308#define EM_AARCH64 183 /* AArch64 64-bit ARM microprocessor */ 309#define EM_AVR32 185 /* Atmel Corporation 32-bit microprocessor family*/ 310#define EM_TILE64 187 /* Tilera TILE64 multicore architecture family */ 311#define EM_TILEPRO 188 /* Tilera TILEPro multicore architecture family */ 312#define EM_MICROBLAZE 189 /* Xilinx MicroBlaze 32-bit RISC soft processor core */ 313#define EM_TILEGX 192 /* Tilera TILE-GX multicore architecture family */ 314#define EM_Z80 220 /* Zilog Z80 */ 315#define EM_RISCV 243 /* RISC-V */ 316 317/* Unofficial machine types follow */ 318#define EM_ALPHA_EXP 36902 /* used by NetBSD/alpha; obsolete */ 319#define EM_NUM 36903 320 321/* 322 * Program Header 323 */ 324typedef struct { 325 Elf32_Word p_type; /* entry type */ 326 Elf32_Off p_offset; /* offset */ 327 Elf32_Addr p_vaddr; /* virtual address */ 328 Elf32_Addr p_paddr; /* physical address */ 329 Elf32_Word p_filesz; /* file size */ 330 Elf32_Word p_memsz; /* memory size */ 331 Elf32_Word p_flags; /* flags */ 332 Elf32_Word p_align; /* memory & file alignment */ 333} Elf32_Phdr; 334 335typedef struct { 336 Elf64_Word p_type; /* entry type */ 337 Elf64_Word p_flags; /* flags */ 338 Elf64_Off p_offset; /* offset */ 339 Elf64_Addr p_vaddr; /* virtual address */ 340 Elf64_Addr p_paddr; /* physical address */ 341 Elf64_Xword p_filesz; /* file size */ 342 Elf64_Xword p_memsz; /* memory size */ 343 Elf64_Xword p_align; /* memory & file alignment */ 344} Elf64_Phdr; 345 346/* p_type */ 347#define PT_NULL 0 /* Program header table entry unused */ 348#define PT_LOAD 1 /* Loadable program segment */ 349#define PT_DYNAMIC 2 /* Dynamic linking information */ 350#define PT_INTERP 3 /* Program interpreter */ 351#define PT_NOTE 4 /* Auxiliary information */ 352#define PT_SHLIB 5 /* Reserved, unspecified semantics */ 353#define PT_PHDR 6 /* Entry for header table itself */ 354#define PT_TLS 7 /* TLS initialisation image */ 355#define PT_NUM 8 356 357#define PT_LOOS 0x60000000 /* OS-specific range */ 358 359/* GNU-specific */ 360#define PT_GNU_EH_FRAME 0x6474e550 /* EH frame segment */ 361#define PT_GNU_STACK 0x6474e551 /* Indicate executable stack */ 362#define PT_GNU_RELRO 0x6474e552 /* Make read-only after relocation */ 363 364#define PT_HIOS 0x6fffffff 365#define PT_LOPROC 0x70000000 /* Processor-specific range */ 366#define PT_HIPROC 0x7fffffff 367 368#define PT_MIPS_REGINFO 0x70000000 369#define PT_MIPS_ABIFLAGS 0x70000003 370 371/* p_flags */ 372#define PF_R 0x4 /* Segment is readable */ 373#define PF_W 0x2 /* Segment is writable */ 374#define PF_X 0x1 /* Segment is executable */ 375 376#define PF_MASKOS 0x0ff00000 /* Operating system specific values */ 377#define PF_MASKPROC 0xf0000000 /* Processor-specific values */ 378 379/* Extended program header index. */ 380#define PN_XNUM 0xffff 381 382/* 383 * Section Headers 384 */ 385typedef struct { 386 Elf32_Word sh_name; /* section name (.shstrtab index) */ 387 Elf32_Word sh_type; /* section type */ 388 Elf32_Word sh_flags; /* section flags */ 389 Elf32_Addr sh_addr; /* virtual address */ 390 Elf32_Off sh_offset; /* file offset */ 391 Elf32_Word sh_size; /* section size */ 392 Elf32_Word sh_link; /* link to another */ 393 Elf32_Word sh_info; /* misc info */ 394 Elf32_Word sh_addralign; /* memory alignment */ 395 Elf32_Word sh_entsize; /* table entry size */ 396} Elf32_Shdr; 397 398typedef struct { 399 Elf64_Word sh_name; /* section name (.shstrtab index) */ 400 Elf64_Word sh_type; /* section type */ 401 Elf64_Xword sh_flags; /* section flags */ 402 Elf64_Addr sh_addr; /* virtual address */ 403 Elf64_Off sh_offset; /* file offset */ 404 Elf64_Xword sh_size; /* section size */ 405 Elf64_Word sh_link; /* link to another */ 406 Elf64_Word sh_info; /* misc info */ 407 Elf64_Xword sh_addralign; /* memory alignment */ 408 Elf64_Xword sh_entsize; /* table entry size */ 409} Elf64_Shdr; 410 411/* sh_type */ 412#define SHT_NULL 0 /* Section header table entry unused */ 413#define SHT_PROGBITS 1 /* Program information */ 414#define SHT_SYMTAB 2 /* Symbol table */ 415#define SHT_STRTAB 3 /* String table */ 416#define SHT_RELA 4 /* Relocation information w/ addend */ 417#define SHT_HASH 5 /* Symbol hash table */ 418#define SHT_DYNAMIC 6 /* Dynamic linking information */ 419#define SHT_NOTE 7 /* Auxiliary information */ 420#define SHT_NOBITS 8 /* No space allocated in file image */ 421#define SHT_REL 9 /* Relocation information w/o addend */ 422#define SHT_SHLIB 10 /* Reserved, unspecified semantics */ 423#define SHT_DYNSYM 11 /* Symbol table for dynamic linker */ 424#define SHT_INIT_ARRAY 14 /* Initialization function pointers */ 425#define SHT_FINI_ARRAY 15 /* Termination function pointers */ 426#define SHT_PREINIT_ARRAY 16 /* Pre-initialization function ptrs */ 427#define SHT_GROUP 17 /* Section group */ 428#define SHT_SYMTAB_SHNDX 18 /* Section indexes (see SHN_XINDEX) */ 429#define SHT_NUM 19 430 431#define SHT_LOOS 0x60000000 /* Operating system specific range */ 432#define SHT_GNU_INCREMENTAL_INPUTS 0x6fff4700 /* GNU incremental build data */ 433#define SHT_LOSUNW 0x6ffffff4 434#define SHT_SUNW_dof 0x6ffffff4 435#define SHT_GNU_ATTRIBUTES 0x6ffffff5 /* GNU object attributes */ 436#define SHT_SUNW_cap 0x6ffffff5 437#define SHT_SUNW_SIGNATURE 0x6ffffff6 438#define SHT_GNU_HASH 0x6ffffff6 /* GNU style symbol hash table */ 439#define SHT_GNU_LIBLIST 0x6ffffff7 /* GNU list of prelink dependencies */ 440#define SHT_SUNW_move 0x6ffffffa 441#define SHT_SUNW_COMDAT 0x6ffffffb 442#define SHT_SUNW_syminfo 0x6ffffffc 443#define SHT_SUNW_verdef 0x6ffffffd /* Versions defined by file */ 444#define SHT_GNU_verdef SHT_SUNW_verdef 445#define SHT_SUNW_verneed 0x6ffffffe /* Versions needed by file */ 446#define SHT_GNU_verneed SHT_SUNW_verneed 447#define SHT_SUNW_versym 0x6fffffff /* Symbol versions */ 448#define SHT_GNU_versym SHT_SUNW_versym 449#define SHT_HISUNW 0x6fffffff 450#define SHT_HIOS 0x6fffffff 451#define SHT_LOPROC 0x70000000 /* Processor-specific range */ 452#define SHT_AMD64_UNWIND 0x70000001 /* unwind information */ 453#define SHT_ARM_EXIDX 0x70000001 /* exception index table */ 454#define SHT_ARM_PREEMPTMAP 0x70000002 /* BPABI DLL dynamic linking 455 * pre-emption map */ 456#define SHT_ARM_ATTRIBUTES 0x70000003 /* Object file compatibility 457 * attributes */ 458#define SHT_ARM_DEBUGOVERLAY 0x70000004 /* See DBGOVL for details */ 459#define SHT_ARM_OVERLAYSECTION 0x70000005 460#define SHT_MIPS_REGINFO 0x70000006 461#define SHT_MIPS_OPTIONS 0x7000000d 462#define SHT_MIPS_DWARF 0x7000001e /* MIPS gcc uses MIPS_DWARF */ 463#define SHT_HIPROC 0x7fffffff 464#define SHT_LOUSER 0x80000000 /* Application-specific range */ 465#define SHT_HIUSER 0xffffffff 466 467/* sh_flags */ 468#define SHF_WRITE 0x00000001 /* Contains writable data */ 469#define SHF_ALLOC 0x00000002 /* Occupies memory */ 470#define SHF_EXECINSTR 0x00000004 /* Contains executable insns */ 471#define SHF_MERGE 0x00000010 /* Might be merged */ 472#define SHF_STRINGS 0x00000020 /* Contains nul terminated strings */ 473#define SHF_INFO_LINK 0x00000040 /* "sh_info" contains SHT index */ 474#define SHF_LINK_ORDER 0x00000080 /* Preserve order after combining */ 475#define SHF_OS_NONCONFORMING 0x00000100 /* OS specific handling required */ 476#define SHF_GROUP 0x00000200 /* Is member of a group */ 477#define SHF_TLS 0x00000400 /* Holds thread-local data */ 478#define SHF_MASKOS 0x0ff00000 /* Operating system specific values */ 479#define SHF_MASKPROC 0xf0000000 /* Processor-specific values */ 480#define SHF_ORDERED 0x40000000 /* Ordering requirement (Solaris) */ 481#define SHF_EXCLUDE 0x80000000 /* Excluded unless unles ref/alloc 482 (Solaris).*/ 483/* 484 * Symbol Table 485 */ 486typedef struct { 487 Elf32_Word st_name; /* Symbol name (.strtab index) */ 488 Elf32_Word st_value; /* value of symbol */ 489 Elf32_Word st_size; /* size of symbol */ 490 Elf_Byte st_info; /* type / binding attrs */ 491 Elf_Byte st_other; /* unused */ 492 Elf32_Half st_shndx; /* section index of symbol */ 493} Elf32_Sym; 494 495typedef struct { 496 Elf64_Word st_name; /* Symbol name (.strtab index) */ 497 Elf_Byte st_info; /* type / binding attrs */ 498 Elf_Byte st_other; /* unused */ 499 Elf64_Half st_shndx; /* section index of symbol */ 500 Elf64_Addr st_value; /* value of symbol */ 501 Elf64_Xword st_size; /* size of symbol */ 502} Elf64_Sym; 503 504/* Symbol Table index of the undefined symbol */ 505#define ELF_SYM_UNDEFINED 0 506 507#define STN_UNDEF 0 /* undefined index */ 508 509/* st_info: Symbol Bindings */ 510#define STB_LOCAL 0 /* local symbol */ 511#define STB_GLOBAL 1 /* global symbol */ 512#define STB_WEAK 2 /* weakly defined global symbol */ 513#define STB_NUM 3 514 515#define STB_LOOS 10 /* Operating system specific range */ 516#define STB_HIOS 12 517#define STB_LOPROC 13 /* Processor-specific range */ 518#define STB_HIPROC 15 519 520/* st_info: Symbol Types */ 521#define STT_NOTYPE 0 /* Type not specified */ 522#define STT_OBJECT 1 /* Associated with a data object */ 523#define STT_FUNC 2 /* Associated with a function */ 524#define STT_SECTION 3 /* Associated with a section */ 525#define STT_FILE 4 /* Associated with a file name */ 526#define STT_COMMON 5 /* Uninitialised common block */ 527#define STT_TLS 6 /* Thread local data object */ 528#define STT_NUM 7 529 530#define STT_LOOS 10 /* Operating system specific range */ 531#define STT_GNU_IFUNC 10 /* GNU extension: indirect function */ 532#define STT_HIOS 12 533#define STT_LOPROC 13 /* Processor-specific range */ 534#define STT_HIPROC 15 535 536/* st_other: Visibility Types */ 537#define STV_DEFAULT 0 /* use binding type */ 538#define STV_INTERNAL 1 /* not referenced from outside */ 539#define STV_HIDDEN 2 /* not visible, may be used via ptr */ 540#define STV_PROTECTED 3 /* visible, not preemptible */ 541#define STV_EXPORTED 4 542#define STV_SINGLETON 5 543#define STV_ELIMINATE 6 544 545/* st_info/st_other utility macros */ 546#define ELF_ST_BIND(info) ((uint32_t)(info) >> 4) 547#define ELF_ST_TYPE(info) ((uint32_t)(info) & 0xf) 548#define ELF_ST_INFO(bind,type) ((Elf_Byte)(((bind) << 4) | \ 549 ((type) & 0xf))) 550#define ELF_ST_VISIBILITY(other) ((uint32_t)(other) & 3) 551 552/* 553 * Special section indexes 554 */ 555#define SHN_UNDEF 0 /* Undefined section */ 556 557#define SHN_LORESERVE 0xff00 /* Reserved range */ 558#define SHN_ABS 0xfff1 /* Absolute symbols */ 559#define SHN_COMMON 0xfff2 /* Common symbols */ 560#define SHN_XINDEX 0xffff /* Escape -- index stored elsewhere */ 561#define SHN_HIRESERVE 0xffff 562 563#define SHN_LOPROC 0xff00 /* Processor-specific range */ 564#define SHN_HIPROC 0xff1f 565#define SHN_LOOS 0xff20 /* Operating system specific range */ 566#define SHN_HIOS 0xff3f 567 568#define SHN_MIPS_ACOMMON 0xff00 569#define SHN_MIPS_TEXT 0xff01 570#define SHN_MIPS_DATA 0xff02 571#define SHN_MIPS_SCOMMON 0xff03 572 573/* 574 * Relocation Entries 575 */ 576typedef struct { 577 Elf32_Word r_offset; /* where to do it */ 578 Elf32_Word r_info; /* index & type of relocation */ 579} Elf32_Rel; 580 581typedef struct { 582 Elf32_Word r_offset; /* where to do it */ 583 Elf32_Word r_info; /* index & type of relocation */ 584 Elf32_Sword r_addend; /* adjustment value */ 585} Elf32_Rela; 586 587/* r_info utility macros */ 588#define ELF32_R_SYM(info) ((info) >> 8) 589#define ELF32_R_TYPE(info) ((info) & 0xff) 590#define ELF32_R_INFO(sym, type) (((sym) << 8) + (unsigned char)(type)) 591 592typedef struct { 593 Elf64_Addr r_offset; /* where to do it */ 594 Elf64_Xword r_info; /* index & type of relocation */ 595} Elf64_Rel; 596 597typedef struct { 598 Elf64_Addr r_offset; /* where to do it */ 599 Elf64_Xword r_info; /* index & type of relocation */ 600 Elf64_Sxword r_addend; /* adjustment value */ 601} Elf64_Rela; 602 603/* r_info utility macros */ 604#define ELF64_R_SYM(info) ((info) >> 32) 605#define ELF64_R_TYPE(info) ((info) & 0xffffffff) 606#define ELF64_R_INFO(sym,type) (((sym) << 32) + (type)) 607 608/* 609 * Move entries 610 */ 611typedef struct { 612 Elf32_Lword m_value; /* symbol value */ 613 Elf32_Word m_info; /* size + index */ 614 Elf32_Word m_poffset; /* symbol offset */ 615 Elf32_Half m_repeat; /* repeat count */ 616 Elf32_Half m_stride; /* stride info */ 617} Elf32_Move; 618 619#define ELF32_M_SYM(info) ((info) >> 8) 620#define ELF32_M_SIZE(info) ((info) & 0xff) 621#define ELF32_M_INFO(sym, size) (((sym) << 8) + (unsigned char)(size)) 622 623typedef struct { 624 Elf64_Lword m_value; /* symbol value */ 625 Elf64_Xword m_info; /* size + index */ 626 Elf64_Xword m_poffset; /* symbol offset */ 627 Elf64_Word m_repeat; /* repeat count */ 628 Elf64_Word m_stride; /* stride info */ 629} Elf64_Move; 630 631#define ELF64_M_SYM(info) ((info) >> 8) 632#define ELF64_M_SIZE(info) ((info) & 0xff) 633#define ELF64_M_INFO(sym, size) (((sym) << 8) + (unsigned char)(size)) 634 635/* 636 * Hardware/software capabilities entry 637 */ 638typedef struct { 639 Elf32_Word c_tag; /* entry tag value */ 640 union { 641 Elf32_Addr c_ptr; 642 Elf32_Word c_val; 643 } c_un; 644} Elf32_Cap; 645 646typedef struct { 647 Elf64_Xword c_tag; /* entry tag value */ 648 union { 649 Elf64_Addr c_ptr; 650 Elf64_Xword c_val; 651 } c_un; 652} Elf64_Cap; 653 654/* 655 * Dynamic Section structure array 656 */ 657typedef struct { 658 Elf32_Word d_tag; /* entry tag value */ 659 union { 660 Elf32_Addr d_ptr; 661 Elf32_Word d_val; 662 } d_un; 663} Elf32_Dyn; 664 665typedef struct { 666 Elf64_Xword d_tag; /* entry tag value */ 667 union { 668 Elf64_Addr d_ptr; 669 Elf64_Xword d_val; 670 } d_un; 671} Elf64_Dyn; 672 673/* d_tag */ 674#define DT_NULL 0 /* Marks end of dynamic array */ 675#define DT_NEEDED 1 /* Name of needed library (DT_STRTAB offset) */ 676#define DT_PLTRELSZ 2 /* Size, in bytes, of relocations in PLT */ 677#define DT_PLTGOT 3 /* Address of PLT and/or GOT */ 678#define DT_HASH 4 /* Address of symbol hash table */ 679#define DT_STRTAB 5 /* Address of string table */ 680#define DT_SYMTAB 6 /* Address of symbol table */ 681#define DT_RELA 7 /* Address of Rela relocation table */ 682#define DT_RELASZ 8 /* Size, in bytes, of DT_RELA table */ 683#define DT_RELAENT 9 /* Size, in bytes, of one DT_RELA entry */ 684#define DT_STRSZ 10 /* Size, in bytes, of DT_STRTAB table */ 685#define DT_SYMENT 11 /* Size, in bytes, of one DT_SYMTAB entry */ 686#define DT_INIT 12 /* Address of initialization function */ 687#define DT_FINI 13 /* Address of termination function */ 688#define DT_SONAME 14 /* Shared object name (DT_STRTAB offset) */ 689#define DT_RPATH 15 /* Library search path (DT_STRTAB offset) */ 690#define DT_SYMBOLIC 16 /* Start symbol search within local object */ 691#define DT_REL 17 /* Address of Rel relocation table */ 692#define DT_RELSZ 18 /* Size, in bytes, of DT_REL table */ 693#define DT_RELENT 19 /* Size, in bytes, of one DT_REL entry */ 694#define DT_PLTREL 20 /* Type of PLT relocation entries */ 695#define DT_DEBUG 21 /* Used for debugging; unspecified */ 696#define DT_TEXTREL 22 /* Relocations might modify non-writable seg */ 697#define DT_JMPREL 23 /* Address of relocations associated with PLT */ 698#define DT_BIND_NOW 24 /* Process all relocations at load-time */ 699#define DT_INIT_ARRAY 25 /* Address of initialization function array */ 700#define DT_FINI_ARRAY 26 /* Size, in bytes, of DT_INIT_ARRAY array */ 701#define DT_INIT_ARRAYSZ 27 /* Address of termination function array */ 702#define DT_FINI_ARRAYSZ 28 /* Size, in bytes, of DT_FINI_ARRAY array*/ 703#define DT_RUNPATH 29 /* overrides DT_RPATH */ 704#define DT_FLAGS 30 /* Encodes ORIGIN, SYMBOLIC, TEXTREL, BIND_NOW, STATIC_TLS */ 705#define DT_ENCODING 31 /* ??? */ 706#define DT_PREINIT_ARRAY 32 /* Address of pre-init function array */ 707#define DT_PREINIT_ARRAYSZ 33 /* Size, in bytes, of DT_PREINIT_ARRAY array */ 708#define DT_NUM 34 709 710#define DT_LOOS 0x60000000 /* Operating system specific range */ 711#define DT_VERSYM 0x6ffffff0 /* Symbol versions */ 712#define DT_FLAGS_1 0x6ffffffb /* ELF dynamic flags */ 713#define DT_VERDEF 0x6ffffffc /* Versions defined by file */ 714#define DT_VERDEFNUM 0x6ffffffd /* Number of versions defined by file */ 715#define DT_VERNEED 0x6ffffffe /* Versions needed by file */ 716#define DT_VERNEEDNUM 0x6fffffff /* Number of versions needed by file */ 717#define DT_HIOS 0x6fffffff 718#define DT_LOPROC 0x70000000 /* Processor-specific range */ 719#define DT_HIPROC 0x7fffffff 720 721/* Flag values for DT_FLAGS */ 722#define DF_ORIGIN 0x00000001 /* uses $ORIGIN */ 723#define DF_SYMBOLIC 0x00000002 /* */ 724#define DF_TEXTREL 0x00000004 /* */ 725#define DF_BIND_NOW 0x00000008 /* */ 726#define DF_STATIC_TLS 0x00000010 /* */ 727 728/* Flag values for DT_FLAGS_1 */ 729#define DF_1_NOW 0x00000001 /* Same as DF_BIND_NOW */ 730#define DF_1_GLOBAL 0x00000002 /* Unused */ 731#define DF_1_GROUP 0x00000004 /* Is member of group */ 732#define DF_1_NODELETE 0x00000008 /* Cannot be deleted from process */ 733#define DF_1_LOADFLTR 0x00000010 /* Immediate loading of filters */ 734#define DF_1_INITFIRST 0x00000020 /* init/fini takes priority */ 735#define DF_1_NOOPEN 0x00000040 /* Do not allow loading on dlopen() */ 736#define DF_1_ORIGIN 0x00000080 /* Require $ORIGIN processing */ 737#define DF_1_DIRECT 0x00000100 /* Enable direct bindings */ 738#define DF_1_INTERPOSE 0x00000400 /* Is an interposer */ 739#define DF_1_NODEFLIB 0x00000800 /* Ignore default library search path */ 740#define DF_1_NODUMP 0x00001000 /* Cannot be dumped with dldump(3C) */ 741#define DF_1_CONFALT 0x00002000 /* Configuration alternative */ 742#define DF_1_ENDFILTEE 0x00004000 /* Filtee ends filter's search */ 743#define DF_1_DISPRELDNE 0x00008000 /* Did displacement relocation */ 744#define DF_1_DISPRELPND 0x00010000 /* Pending displacement relocation */ 745#define DF_1_NODIRECT 0x00020000 /* Has non-direct bindings */ 746#define DF_1_IGNMULDEF 0x00040000 /* Used internally */ 747#define DF_1_NOKSYMS 0x00080000 /* Used internally */ 748#define DF_1_NOHDR 0x00100000 /* Used internally */ 749#define DF_1_EDITED 0x00200000 /* Has been modified since build */ 750#define DF_1_NORELOC 0x00400000 /* Used internally */ 751#define DF_1_SYMINTPOSE 0x00800000 /* Has individual symbol interposers */ 752#define DF_1_GLOBAUDIT 0x01000000 /* Require global auditing */ 753#define DF_1_SINGLETON 0x02000000 /* Has singleton symbols */ 754#define DF_1_STUB 0x04000000 /* Stub */ 755#define DF_1_PIE 0x08000000 /* Position Independent Executable */ 756 757/* 758 * Auxiliary Vectors 759 */ 760typedef struct { 761 Elf32_Word a_type; /* 32-bit id */ 762 Elf32_Word a_v; /* 32-bit id */ 763} Aux32Info; 764 765typedef struct { 766 Elf64_Word a_type; /* 32-bit id */ 767 Elf64_Xword a_v; /* 64-bit id */ 768} Aux64Info; 769 770/* a_type */ 771#define AT_NULL 0 /* Marks end of array */ 772#define AT_IGNORE 1 /* No meaning, a_un is undefined */ 773#define AT_EXECFD 2 /* Open file descriptor of object file */ 774#define AT_PHDR 3 /* &phdr[0] */ 775#define AT_PHENT 4 /* sizeof(phdr[0]) */ 776#define AT_PHNUM 5 /* # phdr entries */ 777#define AT_PAGESZ 6 /* PAGESIZE */ 778#define AT_BASE 7 /* Interpreter base addr */ 779#define AT_FLAGS 8 /* Processor flags */ 780#define AT_ENTRY 9 /* Entry address of executable */ 781#define AT_DCACHEBSIZE 10 /* Data cache block size */ 782#define AT_ICACHEBSIZE 11 /* Instruction cache block size */ 783#define AT_UCACHEBSIZE 12 /* Unified cache block size */ 784#define AT_STACKBASE 13 /* Base address of the main thread */ 785 786 /* Vendor specific */ 787#define AT_MIPS_NOTELF 10 /* XXX a_val != 0 -> MIPS XCOFF executable */ 788 789#define AT_EUID 2000 /* euid (solaris compatible numbers) */ 790#define AT_RUID 2001 /* ruid (solaris compatible numbers) */ 791#define AT_EGID 2002 /* egid (solaris compatible numbers) */ 792#define AT_RGID 2003 /* rgid (solaris compatible numbers) */ 793 794 /* Solaris kernel specific */ 795#define AT_SUN_LDELF 2004 /* dynamic linker's ELF header */ 796#define AT_SUN_LDSHDR 2005 /* dynamic linker's section header */ 797#define AT_SUN_LDNAME 2006 /* dynamic linker's name */ 798#define AT_SUN_LPGSIZE 2007 /* large pagesize */ 799 800 /* Other information */ 801#define AT_SUN_PLATFORM 2008 /* sysinfo(SI_PLATFORM) */ 802#define AT_SUN_HWCAP 2009 /* process hardware capabilities */ 803#define AT_SUN_IFLUSH 2010 /* do we need to flush the instruction cache? */ 804#define AT_SUN_CPU 2011 /* CPU name */ 805 /* ibcs2 emulation band aid */ 806#define AT_SUN_EMUL_ENTRY 2012 /* coff entry point */ 807#define AT_SUN_EMUL_EXECFD 2013 /* coff file descriptor */ 808 /* Executable's fully resolved name */ 809#define AT_SUN_EXECNAME 2014 810 811/* 812 * The header for GNU-style hash sections. 813 */ 814typedef struct { 815 uint32_t gh_nbuckets; /* Number of hash buckets. */ 816 uint32_t gh_symndx; /* First visible symbol in .dynsym. */ 817 uint32_t gh_maskwords; /* #maskwords used in bloom filter. */ 818 uint32_t gh_shift2; /* Bloom filter shift count. */ 819} Elf_GNU_Hash_Header; 820 821/* 822 * Note Headers 823 */ 824typedef struct { 825 Elf32_Word n_namesz; 826 Elf32_Word n_descsz; 827 Elf32_Word n_type; 828} Elf32_Nhdr; 829 830typedef struct { 831 Elf64_Word n_namesz; 832 Elf64_Word n_descsz; 833 Elf64_Word n_type; 834} Elf64_Nhdr; 835 836#define ELF_NOTE_GNU_NAMESZ 4 837#define ELF_NOTE_GNU_NAME "GNU\0" 838 839/* 840 * GNU-specific note type: ABI tag 841 * name: GNU\0 842 * namesz: 4 843 * desc: 844 * word[0]: OS tag 845 * word[1]: major version 846 * word[2]: minor version 847 * word[3]: teeny version 848 * descsz: 16 849 */ 850/* GNU-specific note name and description sizes */ 851#define ELF_NOTE_TYPE_ABI_TAG 1 852#define ELF_NOTE_ABI_NAME ELF_NOTE_GNU_NAME 853#define ELF_NOTE_ABI_NAMESZ ELF_NOTE_GNU_NAMESZ 854#define ELF_NOTE_ABI_DESCSZ 16 855/* GNU-specific OS/version value stuff */ 856#define ELF_NOTE_ABI_OS_LINUX 0 857#define ELF_NOTE_ABI_OS_HURD 1 858#define ELF_NOTE_ABI_OS_SOLARIS 2 859#define ELF_NOTE_ABI_OS_KFREEBSD 3 860#define ELF_NOTE_ABI_OS_KNETBSD 4 861 862/* Old gcc style, under the ABI tag */ 863#define ELF_NOTE_OGCC_NAMESZ 8 864#define ELF_NOTE_OGCC_NAME "01.01\0\0\0\0" 865#define ELF_NOTE_OGCC_DESCSZ 0 866 867/* 868 * GNU-specific note type: Hardware capabilities 869 * name: GNU\0 870 * namesz: 4 871 * desc: 872 * word[0]: Number of entries 873 * word[1]: Bitmask of enabled entries 874 * Followed by a byte id, and a NUL terminated string per entry 875 * descsz: variable 876 */ 877#define ELF_NOTE_TYPE_GNU_HWCAP 2 878 879/* 880 * GNU-specific note type: Build ID generated by ld 881 * name: GNU\0 882 * desc: 883 * word[0..4] SHA1 [default] 884 * or 885 * word[0..3] md5 or uuid 886 * descsz: 16 or 20 887 */ 888#define ELF_NOTE_TYPE_GNU_BUILD_ID 3 889 890/* SuSE-specific note type: ABI 891 * name: SuSE\0 892 * namesz: 5 893 * desc: 894 * half[0] = MMmm 895 * 896 * M = product major version 897 * m = product minor version 898 * descsz: 2 899 */ 900#define ELF_NOTE_TYPE_SUSE_TAG 1 901/* SuSE-specific note name and description sizes */ 902#define ELF_NOTE_SUSE_NAMESZ 5 903#define ELF_NOTE_SUSE_DESCSZ 2 904/* SuSE-specific note name */ 905#define ELF_NOTE_SUSE_NAME "SuSE\0" 906 907/* SuSE-specific note type: version 908 * name: SuSE\0\0\0\0 909 * namesz: 8 910 * desc: 911 * word[0] = VVTTMMmm 912 * 913 * V = version of following data 914 * T = product type: [box, sles, nld, whatever] 915 * M = product major version 916 * m = product minor version 917 * descsz: 8 918 */ 919#define ELF_NOTE_TYPE_SUSE_VERSION_TAG 0x45537553 /* SuSE in LE */ 920/* SuSE-specific note name and description sizes */ 921#define ELF_NOTE_SUSE_VERSION_NAMESZ 8 922#define ELF_NOTE_SUSE_VERSION_DESCSZ 8 923/* SuSE-specific note name */ 924#define ELF_NOTE_SUSE_VERSION_NAME "SuSE\0\0\0\0" 925 926/* Go-specific note type: buildid 927 * name: Go\0\0 928 * namesz: 4 929 * desc: 930 * words[10] 931 * descsz: 40 932 */ 933#define ELF_NOTE_TYPE_GO_BUILDID_TAG 4 934#define ELF_NOTE_GO_BUILDID_NAMESZ 4 935#define ELF_NOTE_GO_BUILDID_DESCSZ 40 936#define ELF_NOTE_GO_BUILDID_NAME "Go\0\0" 937 938/* NetBSD-specific note type: NetBSD ABI version. 939 * name: NetBSD\0\0 940 * namesz: 8 941 * desc: 942 * word[0]: MMmmrrpp00 943 * 944 * M = major version 945 * m = minor version 946 * r = release ["",A-Z,Z[A-Z] but numeric] 947 * p = patchlevel 948 * descsz: 4 949 */ 950#define ELF_NOTE_TYPE_NETBSD_TAG 1 951/* NetBSD-specific note name and description sizes */ 952#define ELF_NOTE_NETBSD_NAMESZ 7 953#define ELF_NOTE_NETBSD_DESCSZ 4 954/* NetBSD-specific note name */ 955#define ELF_NOTE_NETBSD_NAME "NetBSD\0\0" 956 957/* NetBSD-specific note type: Emulation (obsolete; last used early 2000) 958 * name: NetBSD\0\0 959 * namesz: 8 960 * desc: 961 * "netbsd\0" 962 * 963 * descsz: 8 964 */ 965#define ELF_NOTE_TYPE_NETBSD_EMUL_TAG 2 966#define ELF_NOTE_NETBSD_EMUL_NAMESZ 7 967#define ELF_NOTE_NETBSD_EMUL_DESCSZ 7 968/* NetBSD-specific note name */ 969#define ELF_NOTE_NETBSD_EMUL_NAME "NetBSD\0\0" 970 971/* 972 * NetBSD-specific note type: PaX. 973 * There should be 1 NOTE per executable. 974 * name: PaX\0 975 * namesz: 4 976 * desc: 977 * word[0]: capability bitmask 978 * descsz: 4 979 */ 980#define ELF_NOTE_TYPE_PAX_TAG 3 981#define ELF_NOTE_PAX_MPROTECT 0x01 /* Force enable Mprotect */ 982#define ELF_NOTE_PAX_NOMPROTECT 0x02 /* Force disable Mprotect */ 983#define ELF_NOTE_PAX_GUARD 0x04 /* Force enable Segvguard */ 984#define ELF_NOTE_PAX_NOGUARD 0x08 /* Force disable Segvguard */ 985#define ELF_NOTE_PAX_ASLR 0x10 /* Force enable ASLR */ 986#define ELF_NOTE_PAX_NOASLR 0x20 /* Force disable ASLR */ 987#define ELF_NOTE_PAX_NAMESZ 4 988#define ELF_NOTE_PAX_NAME "PaX\0" 989#define ELF_NOTE_PAX_DESCSZ 4 990 991/* 992 * NetBSD-specific core file information. 993 * 994 * NetBSD ELF core files use notes to provide information about 995 * the process's state. The note name is "NetBSD-CORE" for 996 * information that is global to the process, and "NetBSD-CORE@nn", 997 * where "nn" is the lwpid of the LWP that the information belongs 998 * to (such as register state). 999 * 1000 * We use the following note identifiers: 1001 * 1002 * ELF_NOTE_NETBSD_CORE_PROCINFO 1003 * Note is a "netbsd_elfcore_procinfo" structure. 1004 * ELF_NOTE_NETBSD_CORE_AUXV 1005 * Note is an array of AuxInfo structures. 1006 * 1007 * We also use ptrace(2) request numbers (the ones that exist in 1008 * machine-dependent space) to identify register info notes. The 1009 * info in such notes is in the same format that ptrace(2) would 1010 * export that information. 1011 * 1012 * Please try to keep the members of this structure nicely aligned, 1013 * and if you add elements, add them to the end and bump the version. 1014 */ 1015 1016#define ELF_NOTE_NETBSD_CORE_NAME "NetBSD-CORE" 1017 1018#define ELF_NOTE_NETBSD_CORE_PROCINFO 1 1019#define ELF_NOTE_NETBSD_CORE_AUXV 2 1020 1021#define NETBSD_ELFCORE_PROCINFO_VERSION 1 1022 1023struct netbsd_elfcore_procinfo { 1024 /* Version 1 fields start here. */ 1025 uint32_t cpi_version; /* our version */ 1026 uint32_t cpi_cpisize; /* sizeof(this struct) */ 1027 uint32_t cpi_signo; /* killing signal */ 1028 uint32_t cpi_sigcode; /* signal code */ 1029 uint32_t cpi_sigpend[4]; /* pending signals */ 1030 uint32_t cpi_sigmask[4]; /* blocked signals */ 1031 uint32_t cpi_sigignore[4]; /* ignored signals */ 1032 uint32_t cpi_sigcatch[4]; /* caught signals */ 1033 int32_t cpi_pid; /* process ID */ 1034 int32_t cpi_ppid; /* parent process ID */ 1035 int32_t cpi_pgrp; /* process group ID */ 1036 int32_t cpi_sid; /* session ID */ 1037 uint32_t cpi_ruid; /* real user ID */ 1038 uint32_t cpi_euid; /* effective user ID */ 1039 uint32_t cpi_svuid; /* saved user ID */ 1040 uint32_t cpi_rgid; /* real group ID */ 1041 uint32_t cpi_egid; /* effective group ID */ 1042 uint32_t cpi_svgid; /* saved group ID */ 1043 uint32_t cpi_nlwps; /* number of LWPs */ 1044 int8_t cpi_name[32]; /* copy of p->p_comm */ 1045 /* Add version 2 fields below here. */ 1046 int32_t cpi_siglwp; /* LWP target of killing signal */ 1047}; 1048 1049/* 1050 * NetBSD-specific note type: MACHINE_ARCH. 1051 * There should be 1 NOTE per executable. 1052 * name: NetBSD\0 1053 * namesz: 7 1054 * desc: string 1055 * descsz: variable 1056 */ 1057#define ELF_NOTE_TYPE_MARCH_TAG 5 1058/* NetBSD-specific note name and description sizes */ 1059#define ELF_NOTE_MARCH_NAMESZ ELF_NOTE_NETBSD_NAMESZ 1060/* NetBSD-specific note name */ 1061#define ELF_NOTE_MARCH_NAME ELF_NOTE_NETBSD_NAME 1062 1063/* 1064 * NetBSD-specific note type: MCMODEL 1065 * There should be 1 NOTE per executable. 1066 * name: NetBSD\0 1067 * namesz: 7 1068 * code model: string 1069 */ 1070 1071#define ELF_NOTE_TYPE_MCMODEL_TAG 6 1072/* NetBSD-specific note name and description sizes */ 1073#define ELF_NOTE_MCMODEL_NAMESZ ELF_NOTE_NETBSD_NAMESZ 1074/* NetBSD-specific note name */ 1075#define ELF_NOTE_MCMODEL_NAME ELF_NOTE_NETBSD_NAME 1076 1077 1078#if !defined(ELFSIZE) 1079# if defined(_RUMPKERNEL) || !defined(_KERNEL) 1080# define ELFSIZE ARCH_ELFSIZE 1081# else 1082# define ELFSIZE KERN_ELFSIZE 1083# endif 1084#endif 1085 1086#if defined(ELFSIZE) 1087#define CONCAT(x,y) __CONCAT(x,y) 1088#define ELFNAME(x) CONCAT(elf,CONCAT(ELFSIZE,CONCAT(_,x))) 1089#define ELFNAME2(x,y) CONCAT(x,CONCAT(_elf,CONCAT(ELFSIZE,CONCAT(_,y)))) 1090#define ELFNAMEEND(x) CONCAT(x,CONCAT(_elf,ELFSIZE)) 1091#define ELFDEFNNAME(x) CONCAT(ELF,CONCAT(ELFSIZE,CONCAT(_,x))) 1092#define ElfW(x) CONCAT(Elf,CONCAT(ELFSIZE,CONCAT(_,x))) 1093#endif 1094 1095#if defined(ELFSIZE) && (ELFSIZE == 32) 1096#define Elf_Ehdr Elf32_Ehdr 1097#define Elf_Phdr Elf32_Phdr 1098#define Elf_Shdr Elf32_Shdr 1099#define Elf_Sym Elf32_Sym 1100#define Elf_Rel Elf32_Rel 1101#define Elf_Rela Elf32_Rela 1102#define Elf_Dyn Elf32_Dyn 1103#define Elf_Word Elf32_Word 1104#define Elf_Sword Elf32_Sword 1105#define Elf_Half Elf32_Half 1106#define Elf_Addr Elf32_Addr 1107#define Elf_Off Elf32_Off 1108#define Elf_SOff Elf32_SOff 1109#define Elf_Nhdr Elf32_Nhdr 1110#define Elf_Verdef Elf32_Verdef 1111#define Elf_Verdaux Elf32_Verdaux 1112#define Elf_Verneed Elf32_Verneed 1113#define Elf_Vernaux Elf32_Vernaux 1114#define Elf_Versym Elf32_Versym 1115 1116#define ELF_R_SYM ELF32_R_SYM 1117#define ELF_R_TYPE ELF32_R_TYPE 1118#define ELFCLASS ELFCLASS32 1119 1120#define AuxInfo Aux32Info 1121#elif defined(ELFSIZE) && (ELFSIZE == 64) 1122#define Elf_Ehdr Elf64_Ehdr 1123#define Elf_Phdr Elf64_Phdr 1124#define Elf_Shdr Elf64_Shdr 1125#define Elf_Sym Elf64_Sym 1126#define Elf_Rel Elf64_Rel 1127#define Elf_Rela Elf64_Rela 1128#define Elf_Dyn Elf64_Dyn 1129#define Elf_Word Elf64_Word 1130#define Elf_Sword Elf64_Sword 1131#define Elf_Half Elf64_Half 1132#define Elf_Addr Elf64_Addr 1133#define Elf_Off Elf64_Off 1134#define Elf_SOff Elf64_SOff 1135#define Elf_Nhdr Elf64_Nhdr 1136#define Elf_Verdef Elf64_Verdef 1137#define Elf_Verdaux Elf64_Verdaux 1138#define Elf_Verneed Elf64_Verneed 1139#define Elf_Vernaux Elf64_Vernaux 1140#define Elf_Versym Elf64_Versym 1141 1142#define ELF_R_SYM ELF64_R_SYM 1143#define ELF_R_TYPE ELF64_R_TYPE 1144#define ELFCLASS ELFCLASS64 1145 1146#define AuxInfo Aux64Info 1147#endif 1148 1149#ifndef Elf_Symindx 1150#define Elf_Symindx uint32_t 1151#endif 1152 1153#define ELF32_ST_BIND(info) ELF_ST_BIND(info) 1154#define ELF32_ST_TYPE(info) ELF_ST_TYPE(info) 1155#define ELF32_ST_INFO(bind,type) ELF_ST_INFO(bind,type) 1156#define ELF32_ST_VISIBILITY(other) ELF_ST_VISIBILITY(other) 1157 1158#define ELF64_ST_BIND(info) ELF_ST_BIND(info) 1159#define ELF64_ST_TYPE(info) ELF_ST_TYPE(info) 1160#define ELF64_ST_INFO(bind,type) ELF_ST_INFO(bind,type) 1161#define ELF64_ST_VISIBILITY(other) ELF_ST_VISIBILITY(other) 1162 1163typedef struct { 1164 Elf32_Half si_boundto; /* direct bindings - symbol bound to */ 1165 Elf32_Half si_flags; /* per symbol flags */ 1166} Elf32_Syminfo; 1167 1168typedef struct { 1169 Elf64_Word si_boundto; /* direct bindings - symbol bound to */ 1170 Elf64_Word si_flags; /* per symbol flags */ 1171} Elf64_Syminfo; 1172 1173#define SYMINFO_FLG_DIRECT 0x0001 /* symbol ref has direct association 1174 to object containing definition */ 1175#define SYMINFO_FLG_PASSTHRU 0x0002 /* ignored - see SYMINFO_FLG_FILTER */ 1176#define SYMINFO_FLG_COPY 0x0004 /* symbol is a copy-reloc */ 1177#define SYMINFO_FLG_LAZYLOAD 0x0008 /* object containing defn should be 1178 lazily-loaded */ 1179#define SYMINFO_FLG_DIRECTBIND 0x0010 /* ref should be bound directly to 1180 object containing definition */ 1181#define SYMINFO_FLG_NOEXTDIRECT 0x0020 /* don't let an external reference 1182 directly bind to this symbol */ 1183#define SYMINFO_FLG_FILTER 0x0002 /* symbol ref is associated to a */ 1184#define SYMINFO_FLG_AUXILIARY 0x0040 /* standard or auxiliary filter */ 1185 1186#define SYMINFO_BT_SELF 0xffff /* symbol bound to self */ 1187#define SYMINFO_BT_PARENT 0xfffe /* symbol bound to parent */ 1188#define SYMINFO_BT_NONE 0xfffd /* no special symbol binding */ 1189#define SYMINFO_BT_EXTERN 0xfffc /* symbol defined as external */ 1190#define SYMINFO_BT_LOWRESERVE 0xff00 /* beginning of reserved entries */ 1191 1192#define SYMINFO_NONE 0 /* Syminfo version */ 1193#define SYMINFO_CURRENT 1 1194#define SYMINFO_NUM 2 1195 1196/* 1197 * These constants are used for Elf32_Verdef struct's version number. 1198 */ 1199#define VER_DEF_NONE 0 1200#define VER_DEF_CURRENT 1 1201 1202/* 1203 * These constants are used for Elf32_Verdef struct's vd_ndx. 1204 */ 1205#define VER_DEF_IDX(x) VER_NDX(x) 1206 1207/* 1208 * These constants are used for Elf32_Verdef struct's vd_flags. 1209 */ 1210#define VER_FLG_BASE 0x1 1211#define VER_FLG_WEAK 0x2 1212 1213/* 1214 * These are used in an Elf32_Versym field. 1215 */ 1216#define VER_NDX_LOCAL 0 1217#define VER_NDX_GLOBAL 1 1218#define VER_NDX_GIVEN 2 1219 1220/* 1221 * These constants are used for Elf32_Verneed struct's version number. 1222 */ 1223#define VER_NEED_NONE 0 1224#define VER_NEED_CURRENT 1 1225 1226/* 1227 * These constants are used for Elf32_Vernaux struct's vna_other. 1228 */ 1229#define VER_NEED_HIDDEN VER_NDX_HIDDEN 1230#define VER_NEED_IDX(x) VER_NDX(x) 1231 1232/* index */ 1233#define VER_NDX_HIDDEN 0x8000 1234#define VER_NDX(x) ((x) & ~VER_NDX_HIDDEN) 1235 1236/* 1237 * GNU Extension hiding symbol 1238 */ 1239#define VERSYM_HIDDEN 0x8000 1240#define VERSYM_VERSION 0x7fff 1241 1242#define ELF_VER_CHR '@' 1243 1244/* 1245 * These are current size independent. 1246 */ 1247 1248typedef struct { 1249 Elf32_Half vd_version; /* version number of structure */ 1250 Elf32_Half vd_flags; /* flags (VER_FLG_*) */ 1251 Elf32_Half vd_ndx; /* version index */ 1252 Elf32_Half vd_cnt; /* number of verdaux entries */ 1253 Elf32_Word vd_hash; /* hash of name */ 1254 Elf32_Word vd_aux; /* offset to verdaux entries */ 1255 Elf32_Word vd_next; /* offset to next verdef */ 1256} Elf32_Verdef; 1257typedef Elf32_Verdef Elf64_Verdef; 1258 1259typedef struct { 1260 Elf32_Word vda_name; /* string table offset of name */ 1261 Elf32_Word vda_next; /* offset to verdaux */ 1262} Elf32_Verdaux; 1263typedef Elf32_Verdaux Elf64_Verdaux; 1264 1265typedef struct { 1266 Elf32_Half vn_version; /* version number of structure */ 1267 Elf32_Half vn_cnt; /* number of vernaux entries */ 1268 Elf32_Word vn_file; /* string table offset of library name*/ 1269 Elf32_Word vn_aux; /* offset to vernaux entries */ 1270 Elf32_Word vn_next; /* offset to next verneed */ 1271} Elf32_Verneed; 1272typedef Elf32_Verneed Elf64_Verneed; 1273 1274typedef struct { 1275 Elf32_Word vna_hash; /* Hash of dependency name */ 1276 Elf32_Half vna_flags; /* flags (VER_FLG_*) */ 1277 Elf32_Half vna_other; /* unused */ 1278 Elf32_Word vna_name; /* string table offset to version name*/ 1279 Elf32_Word vna_next; /* offset to next vernaux */ 1280} Elf32_Vernaux; 1281typedef Elf32_Vernaux Elf64_Vernaux; 1282 1283typedef struct { 1284 Elf32_Half vs_vers; 1285} Elf32_Versym; 1286typedef Elf32_Versym Elf64_Versym; 1287 1288#ifdef _KERNEL 1289 1290/* 1291 * Arbitrary limits to avoid DoS for excessive memory allocation. 1292 */ 1293#define ELF_MAXPHNUM 128 1294#define ELF_MAXSHNUM 32768 1295#define ELF_MAXNOTESIZE 1024 1296 1297#define ELF_AUX_ENTRIES 15 /* Max size of aux array passed to loader */ 1298#define ELF32_NO_ADDR (~(Elf32_Addr)0) /* Indicates addr. not yet filled in */ 1299#define ELF32_LINK_ADDR ((Elf32_Addr)-2) /* advises to use link address */ 1300#define ELF64_NO_ADDR (~(Elf64_Addr)0) /* Indicates addr. not yet filled in */ 1301#define ELF64_LINK_ADDR ((Elf64_Addr)-2) /* advises to use link address */ 1302 1303#if defined(ELFSIZE) && (ELFSIZE == 64) 1304#define ELF_NO_ADDR ELF64_NO_ADDR 1305#define ELF_LINK_ADDR ELF64_LINK_ADDR 1306#elif defined(ELFSIZE) && (ELFSIZE == 32) 1307#define ELF_NO_ADDR ELF32_NO_ADDR 1308#define ELF_LINK_ADDR ELF32_LINK_ADDR 1309#endif 1310 1311#ifndef ELF32_EHDR_FLAGS_OK 1312#define ELF32_EHDR_FLAGS_OK(eh) 1 1313#endif 1314 1315#ifndef ELF64_EHDR_FLAGS_OK 1316#define ELF64_EHDR_FLAGS_OK(eh) 1 1317#endif 1318 1319#if defined(ELFSIZE) && (ELFSIZE == 64) 1320#define ELF_EHDR_FLAGS_OK(eh) ELF64_EHDR_FLAGS_OK(eh) 1321#else 1322#define ELF_EHDR_FLAGS_OK(eh) ELF32_EHDR_FLAGS_OK(eh) 1323#endif 1324 1325#if defined(ELFSIZE) 1326struct elf_args { 1327 Elf_Addr arg_entry; /* program entry point */ 1328 Elf_Addr arg_interp; /* Interpreter load address */ 1329 Elf_Addr arg_phaddr; /* program header address */ 1330 Elf_Addr arg_phentsize; /* Size of program header */ 1331 Elf_Addr arg_phnum; /* Number of program headers */ 1332}; 1333#endif 1334 1335#ifdef _KERNEL_OPT 1336#include "opt_execfmt.h" 1337#endif 1338 1339struct ps_strings; 1340struct coredump_iostate; 1341struct note_state; 1342struct exec_package; 1343 1344#ifdef EXEC_ELF32 1345int exec_elf32_makecmds(struct lwp *, struct exec_package *); 1346int elf32_copyargs(struct lwp *, struct exec_package *, 1347 struct ps_strings *, char **, void *); 1348 1349int coredump_elf32(struct lwp *, struct coredump_iostate *); 1350void coredump_savenote_elf32(struct note_state *, unsigned int, 1351 const char *, void *, size_t); 1352 1353int elf32_check_header(Elf32_Ehdr *); 1354#endif 1355 1356#ifdef EXEC_ELF64 1357int exec_elf64_makecmds(struct lwp *, struct exec_package *); 1358int elf64_copyargs(struct lwp *, struct exec_package *, 1359 struct ps_strings *, char **, void *); 1360 1361int coredump_elf64(struct lwp *, struct coredump_iostate *); 1362void coredump_savenote_elf64(struct note_state *, unsigned int, 1363 const char *, void *, size_t); 1364 1365int elf64_check_header(Elf64_Ehdr *); 1366#endif 1367 1368#endif /* _KERNEL */ 1369 1370#endif /* !_SYS_EXEC_ELF_H_ */ 1371