1 3446 mrj /* 2 3446 mrj * CDDL HEADER START 3 3446 mrj * 4 3446 mrj * The contents of this file are subject to the terms of the 5 3446 mrj * Common Development and Distribution License (the "License"). 6 3446 mrj * You may not use this file except in compliance with the License. 7 3446 mrj * 8 3446 mrj * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 9 3446 mrj * or http://www.opensolaris.org/os/licensing. 10 3446 mrj * See the License for the specific language governing permissions 11 3446 mrj * and limitations under the License. 12 3446 mrj * 13 3446 mrj * When distributing Covered Code, include this CDDL HEADER in each 14 3446 mrj * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 15 3446 mrj * If applicable, add the following below this CDDL HEADER, with the 16 3446 mrj * fields enclosed by brackets "[]" replaced with your own identifying 17 3446 mrj * information: Portions Copyright [yyyy] [name of copyright owner] 18 3446 mrj * 19 3446 mrj * CDDL HEADER END 20 3446 mrj */ 21 3446 mrj 22 3446 mrj /* 23 3446 mrj * Copyright 2007 Sun Microsystems, Inc. All rights reserved. 24 3446 mrj * Use is subject to license terms. 25 3446 mrj */ 26 3446 mrj 27 3446 mrj #pragma ident "%Z%%M% %I% %E% SMI" 28 3446 mrj 29 3446 mrj #include <stdlib.h> 30 3446 mrj #include <fcntl.h> 31 3446 mrj #include <strings.h> 32 3446 mrj #include <stdio.h> 33 3446 mrj #include <errno.h> 34 3446 mrj #include <sys/types.h> 35 3446 mrj #include <sys/inttypes.h> 36 3446 mrj #include <sys/elf.h> 37 3446 mrj #include <sys/elf_notes.h> 38 3446 mrj #include <sys/mman.h> 39 3446 mrj #include <sys/stat.h> 40 3446 mrj #include <sys/statvfs.h> 41 3446 mrj 42 3446 mrj static char *pname; 43 3446 mrj static char *fname; 44 3446 mrj static char *image; /* pointer to the ELF file in memory */ 45 3446 mrj 46 3446 mrj #define ELFSEEK(offset) ((void *)(image + offset)) 47 3446 mrj 48 3446 mrj /* 49 3446 mrj * Extract the PT_LOAD bits and format them into a .s 50 3446 mrj */ 51 3446 mrj static void 52 3446 mrj extract32(Elf32_Ehdr *eh) 53 3446 mrj { 54 3446 mrj Elf32_Phdr *phdr; 55 3446 mrj caddr_t allphdrs; 56 3446 mrj int i; 57 3446 mrj int c; 58 3446 mrj unsigned char *bytes; 59 3446 mrj uint_t cnt = 10; 60 3446 mrj 61 3446 mrj allphdrs = NULL; 62 3446 mrj 63 3446 mrj if (eh->e_type != ET_EXEC) { 64 3446 mrj (void) fprintf(stderr, "%s: not ET_EXEC, e_type = 0x%x\n", 65 3446 mrj pname, eh->e_type); 66 3446 mrj exit(1); 67 3446 mrj } 68 3446 mrj if (eh->e_phnum == 0 || eh->e_phoff == 0) { 69 3446 mrj (void) fprintf(stderr, "%s: no program headers\n", pname); 70 3446 mrj exit(1); 71 3446 mrj } 72 3446 mrj 73 3446 mrj /* 74 3446 mrj * Get the program headers. 75 3446 mrj */ 76 3446 mrj allphdrs = ELFSEEK(eh->e_phoff); 77 3446 mrj if (allphdrs == NULL) { 78 3446 mrj (void) fprintf(stderr, "%s: Failed to get %d program hdrs\n", 79 3446 mrj pname, eh->e_phnum); 80 3446 mrj exit(1); 81 3446 mrj } 82 3446 mrj 83 3446 mrj /* 84 3446 mrj * Find the PT_LOAD section 85 3446 mrj */ 86 3446 mrj for (i = 0; i < eh->e_phnum; i++) { 87 3446 mrj /*LINTED [ELF program header alignment]*/ 88 3446 mrj phdr = (Elf32_Phdr *)(allphdrs + eh->e_phentsize * i); 89 3446 mrj 90 3446 mrj if (phdr->p_type != PT_LOAD) 91 3446 mrj continue; 92 3446 mrj 93 3446 mrj if (phdr->p_memsz == 0) 94 3446 mrj continue; 95 3446 mrj 96 3446 mrj bytes = ELFSEEK(phdr->p_offset); 97 3446 mrj for (c = 0; c < phdr->p_filesz; ++c) { 98 3446 mrj if (c % cnt == 0) 99 3446 mrj (void) printf("\n .byte "); 100 3446 mrj else 101 3446 mrj (void) printf(","); 102 3446 mrj (void) printf("0x%x", bytes[c]); 103 3446 mrj } 104 3446 mrj for (; c < phdr->p_memsz; ++c) { 105 3446 mrj if (c % cnt == 0) { 106 3446 mrj (void) printf("\n .byte "); 107 3446 mrj cnt = 20; 108 3446 mrj } else { 109 3446 mrj (void) printf(", "); 110 3446 mrj } 111 3446 mrj (void) printf("0"); 112 3446 mrj } 113 3446 mrj (void) printf("\n"); 114 3446 mrj return; 115 3446 mrj } 116 3446 mrj 117 3446 mrj (void) fprintf(stderr, "%s: Failed finding PT_LOAD section\n", pname); 118 3446 mrj exit(1); 119 3446 mrj } 120 3446 mrj 121 3446 mrj static void 122 3446 mrj extract64(Elf64_Ehdr *eh) 123 3446 mrj { 124 3446 mrj Elf64_Phdr *phdr; 125 3446 mrj caddr_t allphdrs; 126 3446 mrj int i; 127 3446 mrj int c; 128 3446 mrj unsigned char *bytes; 129 3446 mrj uint_t cnt = 10; 130 3446 mrj 131 3446 mrj allphdrs = NULL; 132 3446 mrj 133 3446 mrj if (eh->e_type != ET_EXEC) { 134 3446 mrj (void) fprintf(stderr, "%s: not ET_EXEC, e_type = 0x%x\n", 135 3446 mrj pname, eh->e_type); 136 3446 mrj exit(1); 137 3446 mrj } 138 3446 mrj if (eh->e_phnum == 0 || eh->e_phoff == 0) { 139 3446 mrj (void) fprintf(stderr, "%s: no program headers\n", pname); 140 3446 mrj exit(1); 141 3446 mrj } 142 3446 mrj 143 3446 mrj /* 144 3446 mrj * Get the program headers. 145 3446 mrj */ 146 3446 mrj allphdrs = ELFSEEK(eh->e_phoff); 147 3446 mrj if (allphdrs == NULL) { 148 3446 mrj (void) fprintf(stderr, "%s: Failed to get %d program hdrs\n", 149 3446 mrj pname, eh->e_phnum); 150 3446 mrj exit(1); 151 3446 mrj } 152 3446 mrj 153 3446 mrj /* 154 3446 mrj * Find the PT_LOAD section 155 3446 mrj */ 156 3446 mrj for (i = 0; i < eh->e_phnum; i++) { 157 3446 mrj /*LINTED [ELF program header alignment]*/ 158 3446 mrj phdr = (Elf64_Phdr *)(allphdrs + eh->e_phentsize * i); 159 3446 mrj 160 3446 mrj if (phdr->p_type != PT_LOAD) 161 3446 mrj continue; 162 3446 mrj 163 3446 mrj if (phdr->p_memsz == 0) 164 3446 mrj continue; 165 3446 mrj 166 3446 mrj bytes = ELFSEEK(phdr->p_offset); 167 3446 mrj for (c = 0; c < phdr->p_filesz; ++c) { 168 3446 mrj if (c % cnt == 0) 169 3446 mrj (void) printf("\n .byte "); 170 3446 mrj else 171 3446 mrj (void) printf(","); 172 3446 mrj (void) printf("0x%x", bytes[c]); 173 3446 mrj } 174 3446 mrj for (; c < phdr->p_memsz; ++c) { 175 3446 mrj if (c % cnt == 0) { 176 3446 mrj (void) printf("\n .byte "); 177 3446 mrj cnt = 20; 178 3446 mrj } else { 179 3446 mrj (void) printf(", "); 180 3446 mrj } 181 3446 mrj (void) printf("0"); 182 3446 mrj } 183 3446 mrj (void) printf("\n"); 184 3446 mrj return; 185 3446 mrj } 186 3446 mrj 187 3446 mrj (void) fprintf(stderr, "%s: Failed finding PT_LOAD section\n", pname); 188 3446 mrj exit(1); 189 3446 mrj } 190 3446 mrj 191 3446 mrj int 192 3446 mrj main(int argc, char **argv) 193 3446 mrj { 194 3446 mrj int fd; 195 3446 mrj uchar_t *ident; 196 3446 mrj void *hdr = NULL; 197 3446 mrj struct stat stats; 198 3446 mrj ssize_t r; 199 5084 johnlev size_t pgsz; 200 3446 mrj uint_t len; 201 3446 mrj 202 3446 mrj /* 203 3446 mrj * we expect one argument -- the elf file 204 3446 mrj */ 205 3446 mrj if (argc != 2) { 206 3446 mrj (void) fprintf(stderr, "usage: %s <unix-elf-file>\n", argv[0]); 207 3446 mrj exit(1); 208 3446 mrj } 209 3446 mrj 210 3446 mrj pname = strrchr(argv[0], '/'); 211 3446 mrj if (pname == NULL) 212 3446 mrj pname = argv[0]; 213 3446 mrj else 214 3446 mrj ++pname; 215 3446 mrj 216 3446 mrj fname = argv[1]; 217 3446 mrj fd = open(fname, O_RDONLY); 218 3446 mrj if (fd < 0) { 219 3446 mrj (void) fprintf(stderr, "%s: open(%s, O_RDONLY) failed, %s\n", 220 3446 mrj pname, fname, strerror(errno)); 221 3446 mrj exit(1); 222 3446 mrj } 223 3446 mrj 224 3446 mrj if (stat(fname, &stats) < 0) { 225 3446 mrj (void) fprintf(stderr, "%s: stat(%s, ...) failed, %s\n", 226 3446 mrj pname, fname, strerror(errno)); 227 3446 mrj exit(1); 228 3446 mrj } 229 3446 mrj 230 5084 johnlev pgsz = getpagesize(); 231 5084 johnlev len = (stats.st_size + (pgsz - 1)) & (~(pgsz - 1)); 232 3446 mrj 233 3446 mrj /* 234 3446 mrj * mmap the file 235 3446 mrj */ 236 3446 mrj image = mmap(NULL, len, PROT_READ, MAP_SHARED, fd, 0); 237 3446 mrj if (image == MAP_FAILED) { 238 3446 mrj (void) fprintf(stderr, "%s: mmap() of %s failed, %s\n", 239 3446 mrj pname, fname, strerror(errno)); 240 3446 mrj exit(1); 241 3446 mrj } 242 3446 mrj 243 3446 mrj ident = ELFSEEK(0); 244 3446 mrj if (ident[EI_MAG0] != ELFMAG0 || ident[EI_MAG1] != ELFMAG1 || 245 3446 mrj ident[EI_MAG2] != ELFMAG2 || ident[EI_MAG3] != ELFMAG3) { 246 3446 mrj (void) fprintf(stderr, "%s: not an ELF file!\n", pname); 247 3446 mrj exit(1); 248 3446 mrj } 249 3446 mrj 250 3446 mrj if (ident[EI_CLASS] == ELFCLASS32) { 251 3446 mrj hdr = ELFSEEK(0); 252 3446 mrj extract32(hdr); 253 3446 mrj } else if (ident[EI_CLASS] == ELFCLASS64) { 254 3446 mrj hdr = ELFSEEK(0); 255 3446 mrj extract64(hdr); 256 3446 mrj } else { 257 3446 mrj (void) fprintf(stderr, "%s: Wrong ELF class 0x%x\n", pname, 258 3446 mrj ident[EI_CLASS]); 259 3446 mrj exit(1); 260 3446 mrj } 261 3446 mrj return (0); 262 3446 mrj } 263
Indexes created Sat Nov 28 01:19:25 UTC 2009
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