ef_sparc64.c revision 109607 
1/*-
2 * Copyright (c) 2003 Jake Burkholder.
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 PURPOSE
17 * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
24 * SUCH DAMAGE.
25 *
26 * $FreeBSD: head/usr.sbin/kldxref/ef_sparc64.c 109607 2003-01-21 03:51:53Z jake $
27 */
28
29#include <sys/types.h>
30#include <machine/elf.h>
31
32#include <err.h>
33#include <string.h>
34
35#include "ef.h"
36
37/*
38 * Apply relocations to the values we got from the file.
39 */
40int
41ef_reloc(elf_file_t ef, Elf_Off offset, size_t len, void *dest)
42{
43	const Elf_Rela *a;
44	Elf_Word w;
45
46	for (a = ef->ef_rela; a < &ef->ef_rela[ef->ef_relasz]; a++) {
47		if (a->r_offset >= offset && a->r_offset < offset + len) {
48			switch (ELF_R_TYPE(a->r_info)) {
49			case R_SPARC_RELATIVE:
50				/* load address is 0 */
51				w = a->r_addend;
52				memcpy((u_char *)dest + (a->r_offset - offset),
53				    &w, sizeof(w));
54				break;
55			default:
56				warnx("unhandled relocation type %u",
57				    ELF_R_TYPE(a->r_info));
58				break;
59			}
60		}
61	}
62	return (0);
63}
64