2 * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
4 * Copyright (c) 2002 Jake Burkholder
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
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.
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 PURPOSE
19 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
20 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
21 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
22 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
23 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
24 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
25 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
29 #include <sys/cdefs.h>
30 __FBSDID("$FreeBSD$");
32 #include <sys/types.h>
33 #include <sys/elf64.h>
34 #include <sys/endian.h>
45 #define xe16toh(x) ((data == ELFDATA2MSB) ? be16toh(x) : le16toh(x))
46 #define xe32toh(x) ((data == ELFDATA2MSB) ? be32toh(x) : le32toh(x))
47 #define xe64toh(x) ((data == ELFDATA2MSB) ? be64toh(x) : le64toh(x))
48 #define htoxe32(x) ((data == ELFDATA2MSB) ? htobe32(x) : htole32(x))
60 #define A_MAGIC 0x01030107
62 static void usage(void);
65 * elf to a.out converter for freebsd/sparc64 bootblocks.
68 main(int ac, char **av)
91 while ((c = getopt(ac, av, "o:")) != -1)
94 if ((fd = open(optarg, O_CREAT|O_RDWR, 0644)) < 0)
106 if ((efd = open(*av, O_RDONLY)) < 0 || fstat(efd, &sb) < 0)
108 v = mmap(NULL, sb.st_size, PROT_READ, MAP_SHARED, efd, 0);
109 if ((e = v) == MAP_FAILED)
113 errx(1, "not an elf file");
114 if (e->e_ident[EI_CLASS] != ELFCLASS64)
115 errx(1, "wrong class");
116 data = e->e_ident[EI_DATA];
117 if (data != ELFDATA2MSB && data != ELFDATA2LSB)
118 errx(1, "wrong data format");
119 if (e->e_ident[EI_VERSION] != EV_CURRENT)
120 errx(1, "wrong elf version");
121 machine = xe16toh(e->e_machine);
122 if (machine != EM_SPARCV9 && machine != EM_ALPHA)
123 errx(1, "wrong machine type");
124 phentsize = xe16toh(e->e_phentsize);
125 if (phentsize != sizeof(*p))
126 errx(1, "phdr size mismatch");
128 entry = xe64toh(e->e_entry);
129 phoff = xe64toh(e->e_phoff);
130 phnum = xe16toh(e->e_phnum);
131 p = (Elf64_Phdr *)((char *)e + phoff);
132 bzero(&a, sizeof(a));
133 for (i = 0; i < phnum; i++) {
134 type = xe32toh(p[i].p_type);
138 errx(1, "too many loadable segments");
139 filesz = xe64toh(p[i].p_filesz);
140 memsz = xe64toh(p[i].p_memsz);
141 offset = xe64toh(p[i].p_offset);
142 a.a_magic = htoxe32(A_MAGIC);
143 a.a_text = htoxe32(filesz);
144 a.a_bss = htoxe32(memsz - filesz);
145 a.a_entry = htoxe32(entry);
146 if (write(fd, &a, sizeof(a)) != sizeof(a) ||
147 write(fd, (char *)e + offset, filesz) != (ssize_t)filesz)
162 fprintf(stderr, "usage: elf2aout [-o outfile] infile\n");