kgzld.c revision 48906 
1/*
2 * Copyright (c) 1999 Global Technology Associates, Inc.
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 *    notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 *    notice, this list of conditions and the following disclaimer in the
12 *    documentation and/or other materials provided with the distribution.
13 *
14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS``AS IS'' AND
15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
17 * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS
18 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY,
19 * OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT
20 * OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
21 * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
22 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
23 * OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
24 * EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
25 *
26 *	$Id:$
27 */
28
29#include <sys/types.h>
30#include <sys/wait.h>
31
32#include <err.h>
33#include <fcntl.h>
34#include <stdio.h>
35#include <stdlib.h>
36#include <string.h>
37#include <unistd.h>
38
39#include "elfhdr.h"
40#include "kgzip.h"
41
42#define KGZOFF sizeof(struct kgz_elfhdr)
43
44#define align(x, y) (((x) + (y) - 1) & ~((y) - 1))
45
46/*
47 * Link KGZ file and loader.
48 */
49void
50kgzld(struct kgz_hdr * kh, const char *f1, const char *f2)
51{
52    char addr[16];
53    struct iodesc idi;
54    pid_t pid;
55    size_t n;
56    int status;
57
58    if (strcmp(kh->ident, "KGZ")) {
59	if ((idi.fd = open(idi.fname = f1, O_RDONLY)) == -1)
60	    err(1, "%s", idi.fname);
61	n = xread(&idi, kh, sizeof(*kh), KGZOFF);
62	xclose(&idi);
63	if (n != sizeof(*kh) || strcmp(kh->ident, "KGZ"))
64	    errx(1, "%s: Invalid format", idi.fname);
65    }
66    sprintf(addr, "%#x", align(kh->dload + kh->dsize, 0x1000));
67    switch (pid = fork()) {
68    case -1:
69	err(1, NULL);
70    case 0:
71	execlp("ld", "ld", "-Ttext", addr, "-o", f2, loader, f1, NULL);
72	warn(NULL);
73	_exit(1);
74    default:
75	if ((pid = waitpid(pid, &status, 0)) == -1)
76	    err(1, NULL);
77	if (WIFSIGNALED(status) || WEXITSTATUS(status))
78	    exit(1);
79    }
80}
81