| 1 | /* |
| 2 | * ========== Copyright Header Begin ========================================== |
| 3 | * |
| 4 | * Hypervisor Software File: elf2bin.c |
| 5 | * |
| 6 | * Copyright (c) 2006 Sun Microsystems, Inc. All Rights Reserved. |
| 7 | * |
| 8 | * - Do no alter or remove copyright notices |
| 9 | * |
| 10 | * - Redistribution and use of this software in source and binary forms, with |
| 11 | * or without modification, are permitted provided that the following |
| 12 | * conditions are met: |
| 13 | * |
| 14 | * - Redistribution of source code must retain the above copyright notice, |
| 15 | * this list of conditions and the following disclaimer. |
| 16 | * |
| 17 | * - Redistribution in binary form must reproduce the above copyright notice, |
| 18 | * this list of conditions and the following disclaimer in the |
| 19 | * documentation and/or other materials provided with the distribution. |
| 20 | * |
| 21 | * Neither the name of Sun Microsystems, Inc. or the names of contributors |
| 22 | * may be used to endorse or promote products derived from this software |
| 23 | * without specific prior written permission. |
| 24 | * |
| 25 | * This software is provided "AS IS," without a warranty of any kind. |
| 26 | * ALL EXPRESS OR IMPLIED CONDITIONS, REPRESENTATIONS AND WARRANTIES, |
| 27 | * INCLUDING ANY IMPLIED WARRANTY OF MERCHANTABILITY, FITNESS FOR A |
| 28 | * PARTICULAR PURPOSE OR NON-INFRINGEMENT, ARE HEREBY EXCLUDED. SUN |
| 29 | * MICROSYSTEMS, INC. ("SUN") AND ITS LICENSORS SHALL NOT BE LIABLE FOR |
| 30 | * ANY DAMAGES SUFFERED BY LICENSEE AS A RESULT OF USING, MODIFYING OR |
| 31 | * DISTRIBUTING THIS SOFTWARE OR ITS DERIVATIVES. IN NO EVENT WILL SUN |
| 32 | * OR ITS LICENSORS BE LIABLE FOR ANY LOST REVENUE, PROFIT OR DATA, OR |
| 33 | * FOR DIRECT, INDIRECT, SPECIAL, CONSEQUENTIAL, INCIDENTAL OR PUNITIVE |
| 34 | * DAMAGES, HOWEVER CAUSED AND REGARDLESS OF THE THEORY OF LIABILITY, |
| 35 | * ARISING OUT OF THE USE OF OR INABILITY TO USE THIS SOFTWARE, EVEN IF |
| 36 | * SUN HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES. |
| 37 | * |
| 38 | * You acknowledge that this software is not designed, licensed or |
| 39 | * intended for use in the design, construction, operation or maintenance of |
| 40 | * any nuclear facility. |
| 41 | * |
| 42 | * ========== Copyright Header End ============================================ |
| 43 | */ |
| 44 | /* |
| 45 | * id: @(#)elf2bin.c 1.1 96/06/18 |
| 46 | * purpose: |
| 47 | * copyright: Copyright 1996 Sun Microsystems, Inc. All Rights Reserved |
| 48 | */ |
| 49 | |
| 50 | #include <sys/types.h> |
| 51 | #include <sys/stat.h> |
| 52 | #include <fcntl.h> |
| 53 | #include <string.h> |
| 54 | #include <stdio.h> |
| 55 | #include <libelf.h> |
| 56 | |
| 57 | int debug = 0; |
| 58 | |
| 59 | char *sh_types[SHT_NUM] = { |
| 60 | "SHT_NULL", |
| 61 | "SHT_PROGBITS", |
| 62 | "SHT_SYMTAB", |
| 63 | "SHT_STRTAB", |
| 64 | "SHT_RELA", |
| 65 | "SHT_HASH", |
| 66 | "SHT_DYNAMIC", |
| 67 | "SHT_NOTE", |
| 68 | "SHT_NOBITS", |
| 69 | "SHT_REL", |
| 70 | "SHT_SHLIB", |
| 71 | "SHT_DYNSYM" |
| 72 | }; |
| 73 | |
| 74 | |
| 75 | char *sh_flags[] = { |
| 76 | "", /* 0 */ |
| 77 | "SHF_WRITE", /* 1 */ |
| 78 | "SHF_ALLOC", /* 2 */ |
| 79 | 0, /* 3 */ |
| 80 | "SHF_EXECINSTR" /* 4 */ |
| 81 | }; |
| 82 | |
| 83 | |
| 84 | int |
| 85 | main(int argc, char **argv) |
| 86 | { |
| 87 | int ifd, ofd; |
| 88 | |
| 89 | if (argc != 3 ) usage(); |
| 90 | |
| 91 | if ((ifd = open(argv[1], O_RDWR)) == -1) { |
| 92 | perror("elf2bin: Can't open input file "); |
| 93 | fprintf(stderr, "%s\n", argv[1]); |
| 94 | exit(-1); |
| 95 | } |
| 96 | |
| 97 | if ((ofd = open(argv[2], O_CREAT|O_TRUNC|O_WRONLY, 0666)) == -1) { |
| 98 | perror("elf2bin: Can't open output file "); |
| 99 | fprintf(stderr, "%s\n", argv[2]); |
| 100 | close(ifd); |
| 101 | exit(-2); |
| 102 | |
| 103 | } |
| 104 | |
| 105 | return elf2bin(ifd, ofd); |
| 106 | |
| 107 | } |
| 108 | |
| 109 | int |
| 110 | elf2bin(int ifd, int ofd) |
| 111 | { |
| 112 | Elf *elf, *arf; |
| 113 | Elf_Cmd cmd; |
| 114 | |
| 115 | if (elf_version(EV_CURRENT) == EV_NONE) { |
| 116 | /* library out of date */ |
| 117 | /* recover from error */ |
| 118 | } |
| 119 | cmd = ELF_C_READ; |
| 120 | arf = elf_begin(ifd, cmd, (Elf *)0); |
| 121 | elf_fill(0); |
| 122 | while ((elf = elf_begin(ifd, cmd, arf)) != 0) { |
| 123 | Elf32_Ehdr *ehdr; |
| 124 | if ((ehdr = elf32_getehdr(elf)) != 0) { |
| 125 | /* process the file ... */ |
| 126 | unsigned int size = 0; |
| 127 | unsigned int base = 0; |
| 128 | Elf_Scn *scn = 0; |
| 129 | |
| 130 | while ((scn = elf_nextscn(elf, scn)) != 0) { |
| 131 | /* process section */ |
| 132 | Elf32_Shdr *shdr; |
| 133 | Elf_Data *data = 0; |
| 134 | |
| 135 | shdr = elf32_getshdr(scn); |
| 136 | |
| 137 | if (debug) dump_shdr(shdr); |
| 138 | |
| 139 | if ((data = elf_getdata(scn, data)) == 0 || |
| 140 | data->d_size == 0) { |
| 141 | /* error or no data */ |
| 142 | } else { |
| 143 | if (debug) dump_data(data); |
| 144 | |
| 145 | if (base == 0) base = shdr->sh_addr; |
| 146 | |
| 147 | if ((shdr->sh_type == SHT_PROGBITS) && |
| 148 | ((shdr->sh_flags & SHF_ALLOC) == SHF_ALLOC)) { |
| 149 | /* interesting section ... */ |
| 150 | if (base + size != shdr->sh_addr) { |
| 151 | unsigned int pad = shdr->sh_addr - base - size; |
| 152 | if (pad > 0x1000) { |
| 153 | base = shdr->sh_addr; |
| 154 | size = 0; |
| 155 | } else { |
| 156 | while (pad) { |
| 157 | long b = 0; |
| 158 | write(ofd, &b, sizeof(long)); |
| 159 | pad -= sizeof(long); |
| 160 | } |
| 161 | } |
| 162 | } |
| 163 | if (write(ofd, data->d_buf, data->d_size) != |
| 164 | data->d_size) { |
| 165 | close(ifd); |
| 166 | close(ofd); |
| 167 | return(1); |
| 168 | } else { |
| 169 | size += data->d_size; |
| 170 | } |
| 171 | } |
| 172 | } |
| 173 | } |
| 174 | |
| 175 | } |
| 176 | cmd = elf_next(elf); |
| 177 | elf_end(elf); |
| 178 | } |
| 179 | elf_end(arf); |
| 180 | close(ofd); |
| 181 | close(ifd); |
| 182 | return(0); |
| 183 | } |
| 184 | |
| 185 | dump_shdr(Elf32_Shdr *shdr) |
| 186 | { |
| 187 | printf("sh_name = 0x%x\n", shdr->sh_name); |
| 188 | printf("sh_type = 0x%x %s\n", |
| 189 | shdr->sh_type, |
| 190 | sh_types[shdr->sh_type] |
| 191 | ); |
| 192 | printf("sh_flags = 0x%x %s %s %s\n", |
| 193 | shdr->sh_flags, |
| 194 | sh_flags[shdr->sh_flags & SHF_WRITE], |
| 195 | sh_flags[shdr->sh_flags & SHF_ALLOC], |
| 196 | sh_flags[shdr->sh_flags & SHF_EXECINSTR] |
| 197 | ); |
| 198 | printf("sh_addr 0x%x\n", shdr->sh_addr); |
| 199 | printf("sh_offset 0x%x\n", shdr->sh_offset); |
| 200 | printf("sh_size 0x%x\n", shdr->sh_size); |
| 201 | printf("sh_link 0x%x\n", shdr->sh_link); |
| 202 | printf("sh_info 0x%x\n", shdr->sh_info); |
| 203 | printf("sh_addralign 0x%x\n", shdr->sh_addralign); |
| 204 | printf("sh_entsize 0x%x\n", shdr->sh_entsize); |
| 205 | |
| 206 | } |
| 207 | |
| 208 | dump_data(Elf_Data *data) |
| 209 | { |
| 210 | printf("\td_buf 0x%x\n", data->d_buf); |
| 211 | printf("\td_type 0x%x\n", data->d_type); |
| 212 | printf("\td_size 0x%x\n", data->d_size); |
| 213 | printf("\td_off 0x%x\n", data->d_off); |
| 214 | printf("\td_align 0x%x\n", data->d_align); |
| 215 | printf("\td_version 0x%x\n", data->d_version); |
| 216 | printf("\n"); |
| 217 | } |
| 218 | |
| 219 | int |
| 220 | usage() |
| 221 | { |
| 222 | fprintf(stderr, "Usage: elf2bin forth.prom forth.bin\n"); |
| 223 | exit(-3); |
| 224 | } |