1/*- 2 * SPDX-License-Identifier: BSD-2-Clause-FreeBSD 3 * 4 * Copyright (c) 1999 Global Technology Associates, Inc. 5 * All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS``AS IS'' AND 17 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 19 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS 20 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, 21 * OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT 22 * OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR 23 * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, 24 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE 25 * OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, 26 * EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 27 * 28 * $FreeBSD: stable/11/usr.sbin/kgzip/elfhdr.c 330449 2018-03-05 07:26:05Z eadler $ 29 */ 30 31#include <sys/endian.h> 32#include <stddef.h> 33#include "elfhdr.h" 34 35#define KGZ_FIX_NSIZE 0 /* Run-time fixup */ 36 37/* 38 * Relocatable header template. 39 */ 40const struct kgz_elfhdr elfhdr = { 41 /* ELF header */ 42 { 43 { 44 ELFMAG0, ELFMAG1, ELFMAG2, ELFMAG3, /* e_ident */ 45 ELFCLASS32, ELFDATA2LSB, EV_CURRENT, 0, 46 'F', 'r', 'e', 'e', 'B', 'S', 'D', 0 47 }, 48 htole16(ET_EXEC), /* e_type */ 49 htole16(EM_386), /* e_machine */ 50 htole32(EV_CURRENT), /* e_version */ 51 0, /* e_entry */ 52 0, /* e_phoff */ 53 htole32(offsetof(struct kgz_elfhdr, sh)), /* e_shoff */ 54 0, /* e_flags */ 55 htole16(sizeof(Elf32_Ehdr)), /* e_ehsize */ 56 0, /* e_phentsize */ 57 0, /* e_phnum */ 58 htole16(sizeof(Elf32_Shdr)), /* e_shentsize */ 59 htole16(KGZ_SHNUM), /* e_shnum */ 60 htole16(KGZ_SH_SHSTRTAB) /* e_shstrndx */ 61 }, 62 /* Section header */ 63 { 64 { 65 0, /* sh_name */ 66 htole32(SHT_NULL), /* sh_type */ 67 0, /* sh_flags */ 68 0, /* sh_addr */ 69 0, /* sh_offset */ 70 0, /* sh_size */ 71 htole32(SHN_UNDEF), /* sh_link */ 72 0, /* sh_info */ 73 0, /* sh_addralign */ 74 0 /* sh_entsize */ 75 }, 76 { 77 htole32(offsetof(struct kgz_shstrtab, symtab)), /* sh_name */ 78 htole32(SHT_SYMTAB), /* sh_type */ 79 0, /* sh_flags */ 80 0, /* sh_addr */ 81 htole32(offsetof(struct kgz_elfhdr, st)), /* sh_offset */ 82 htole32(sizeof(Elf32_Sym) * KGZ_STNUM), /* sh_size */ 83 htole32(KGZ_SH_STRTAB), /* sh_link */ 84 htole32(1), /* sh_info */ 85 htole32(4), /* sh_addralign */ 86 htole32(sizeof(Elf32_Sym)) /* sh_entsize */ 87 }, 88 { 89 htole32(offsetof(struct kgz_shstrtab, shstrtab)), /* sh_name */ 90 htole32(SHT_STRTAB), /* sh_type */ 91 0, /* sh_flags */ 92 0, /* sh_addr */ 93 htole32(offsetof(struct kgz_elfhdr, shstrtab)), /* sh_offset */ 94 htole32(sizeof(struct kgz_shstrtab)), /* sh_size */ 95 htole32(SHN_UNDEF), /* sh_link */ 96 0, /* sh_info */ 97 htole32(1), /* sh_addralign */ 98 0 /* sh_entsize */ 99 }, 100 { 101 htole32(offsetof(struct kgz_shstrtab, strtab)), /* sh_name */ 102 htole32(SHT_STRTAB), /* sh_type */ 103 0, /* sh_flags */ 104 0, /* sh_addr */ 105 htole32(offsetof(struct kgz_elfhdr, strtab)), /* sh_offset */ 106 htole32(sizeof(struct kgz_strtab)), /* sh_size */ 107 htole32(SHN_UNDEF), /* sh_link */ 108 0, /* sh_info */ 109 htole32(1), /* sh_addralign */ 110 0 /* sh_entsize */ 111 }, 112 { 113 htole32(offsetof(struct kgz_shstrtab, data)), /* sh_name */ 114 htole32(SHT_PROGBITS), /* sh_type */ 115 htole32(SHF_ALLOC | SHF_WRITE), /* sh_flags */ 116 0, /* sh_addr */ 117 htole32(sizeof(struct kgz_elfhdr)), /* sh_offset */ 118 htole32(sizeof(struct kgz_hdr) + KGZ_FIX_NSIZE), /* sh_size */ 119 htole32(SHN_UNDEF), /* sh_link */ 120 0, /* sh_info */ 121 htole32(4), /* sh_addralign */ 122 0 /* sh_entsize */ 123 } 124 }, 125 /* Symbol table */ 126 { 127 { 128 0, /* st_name */ 129 0, /* st_value */ 130 0, /* st_size */ 131 0, /* st_info */ 132 0, /* st_other */ 133 htole16(SHN_UNDEF) /* st_shndx */ 134 }, 135 { 136 htole32(offsetof(struct kgz_strtab, kgz)), /* st_name */ 137 0, /* st_value */ 138 htole32(sizeof(struct kgz_hdr)), /* st_size */ 139 ELF32_ST_INFO(STB_GLOBAL, STT_OBJECT), /* st_info */ 140 0, /* st_other */ 141 htole16(KGZ_SH_DATA) /* st_shndx */ 142 }, 143 { 144 htole32(offsetof(struct kgz_strtab, kgz_ndata)), /* st_name */ 145 htole32(sizeof(struct kgz_hdr)), /* st_value */ 146 htole32(KGZ_FIX_NSIZE), /* st_size */ 147 ELF32_ST_INFO(STB_GLOBAL, STT_OBJECT), /* st_info */ 148 0, /* st_other */ 149 htole16(KGZ_SH_DATA) /* st_shndx */ 150 } 151 }, 152 /* Section header string table */ 153 { 154 KGZ_SHSTR_ZERO, /* zero */ 155 KGZ_SHSTR_SYMTAB, /* symtab */ 156 KGZ_SHSTR_SHSTRTAB, /* shstrtab */ 157 KGZ_SHSTR_STRTAB, /* strtab */ 158 KGZ_SHSTR_DATA /* data */ 159 }, 160 /* String table */ 161 { 162 KGZ_STR_ZERO, /* zero */ 163 KGZ_STR_KGZ, /* kgz */ 164 KGZ_STR_KGZ_NDATA /* kgz_ndata */ 165 } 166}; 167