163 lines
4.2 KiB
C
163 lines
4.2 KiB
C
/*-
|
|
* Copyright (c) 2002 Jake Burkholder
|
|
* All rights reserved.
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions
|
|
* are met:
|
|
* 1. Redistributions of source code must retain the above copyright
|
|
* notice, this list of conditions and the following disclaimer.
|
|
* 2. Redistributions in binary form must reproduce the above copyright
|
|
* notice, this list of conditions and the following disclaimer in the
|
|
* documentation and/or other materials provided with the distribution.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
|
|
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
|
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
|
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
|
|
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
|
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
|
|
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
|
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
|
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
|
|
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
|
* SUCH DAMAGE.
|
|
*/
|
|
|
|
#include <sys/cdefs.h>
|
|
__FBSDID("$FreeBSD$");
|
|
|
|
#include <sys/types.h>
|
|
#include <sys/elf64.h>
|
|
#include <sys/mman.h>
|
|
#include <sys/stat.h>
|
|
|
|
#include <err.h>
|
|
#include <fcntl.h>
|
|
#include <string.h>
|
|
#include <unistd.h>
|
|
|
|
#include "endian.h"
|
|
#define xe16toh(x) ((data == ELFDATA2MSB) ? be16toh(x) : le16toh(x))
|
|
#define xe32toh(x) ((data == ELFDATA2MSB) ? be32toh(x) : le32toh(x))
|
|
#define xe64toh(x) ((data == ELFDATA2MSB) ? be64toh(x) : le64toh(x))
|
|
#define htoxe32(x) ((data == ELFDATA2MSB) ? htobe32(x) : htole32(x))
|
|
|
|
struct exec {
|
|
u_int32_t a_magic;
|
|
u_int32_t a_text;
|
|
u_int32_t a_data;
|
|
u_int32_t a_bss;
|
|
u_int32_t a_syms;
|
|
u_int32_t a_entry;
|
|
u_int32_t a_trsize;
|
|
u_int32_t a_drsize;
|
|
};
|
|
#define A_MAGIC 0x01030107
|
|
|
|
extern char *optarg;
|
|
extern int optind;
|
|
|
|
static void usage(void);
|
|
|
|
/*
|
|
* elf to a.out converter for freebsd/sparc64 bootblocks.
|
|
*/
|
|
int
|
|
main(int ac, char **av)
|
|
{
|
|
Elf64_Quarter phentsize;
|
|
Elf64_Quarter machine;
|
|
Elf64_Quarter phnum;
|
|
Elf64_Size filesz;
|
|
Elf64_Size memsz;
|
|
Elf64_Addr entry;
|
|
Elf64_Off offset;
|
|
Elf64_Off phoff;
|
|
Elf64_Half type;
|
|
unsigned char data;
|
|
struct stat sb;
|
|
struct exec a;
|
|
Elf64_Phdr *p;
|
|
Elf64_Ehdr *e;
|
|
void *v;
|
|
int efd;
|
|
int fd;
|
|
int c;
|
|
int i;
|
|
|
|
fd = STDIN_FILENO;
|
|
while ((c = getopt(ac, av, "o:")) != -1)
|
|
switch (c) {
|
|
case 'o':
|
|
if ((fd = open(optarg, O_CREAT|O_RDWR, 0644)) < 0)
|
|
err(1, "%s", optarg);
|
|
break;
|
|
case '?':
|
|
default:
|
|
usage();
|
|
}
|
|
ac -= optind;
|
|
av += optind;
|
|
if (ac == 0)
|
|
usage();
|
|
|
|
if ((efd = open(*av, O_RDONLY)) < 0 || fstat(efd, &sb) < 0)
|
|
err(1, NULL);
|
|
v = mmap(NULL, sb.st_size, PROT_READ, MAP_SHARED, efd, 0);
|
|
if ((e = v) == MAP_FAILED)
|
|
err(1, NULL);
|
|
|
|
if (!IS_ELF(*e))
|
|
errx(1, "not an elf file");
|
|
if (e->e_ident[EI_CLASS] != ELFCLASS64)
|
|
errx(1, "wrong class");
|
|
data = e->e_ident[EI_DATA];
|
|
if (data != ELFDATA2MSB && data != ELFDATA2LSB)
|
|
errx(1, "wrong data format");
|
|
if (e->e_ident[EI_VERSION] != EV_CURRENT)
|
|
errx(1, "wrong elf version");
|
|
machine = xe16toh(e->e_machine);
|
|
if (machine != EM_SPARCV9 && machine != EM_ALPHA)
|
|
errx(1, "wrong machine type");
|
|
phentsize = xe16toh(e->e_phentsize);
|
|
if (phentsize != sizeof(*p))
|
|
errx(1, "phdr size mismatch");
|
|
|
|
entry = xe64toh(e->e_entry);
|
|
phoff = xe64toh(e->e_phoff);
|
|
phnum = xe16toh(e->e_phnum);
|
|
p = (Elf64_Phdr *)((char *)e + phoff);
|
|
bzero(&a, sizeof(a));
|
|
for (i = 0; i < phnum; i++) {
|
|
type = xe32toh(p[i].p_type);
|
|
switch (type) {
|
|
case PT_LOAD:
|
|
if (a.a_magic != 0)
|
|
errx(1, "too many loadable segments");
|
|
filesz = xe64toh(p[i].p_filesz);
|
|
memsz = xe64toh(p[i].p_memsz);
|
|
offset = xe64toh(p[i].p_offset);
|
|
a.a_magic = htoxe32(A_MAGIC);
|
|
a.a_text = htoxe32(filesz);
|
|
a.a_bss = htoxe32(memsz - filesz);
|
|
a.a_entry = htoxe32(entry);
|
|
if (write(fd, &a, sizeof(a)) != sizeof(a) ||
|
|
write(fd, (char *)e + offset, filesz) != (ssize_t)filesz)
|
|
err(1, NULL);
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
}
|
|
|
|
return (0);
|
|
}
|
|
|
|
static void
|
|
usage(void)
|
|
{
|
|
|
|
errx(1, "usage: elf2aout [-o outfile] infile");
|
|
}
|