1/*	$NetBSD: kobj_machdep.c,v 1.1 2008/01/04 16:19:25 ad Exp $	*/
2
3/*-
4 * Copyright (c) 2008 The NetBSD Foundation, Inc.
5 * All rights reserved.
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
9 * are met:
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.
15 *
16 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
17 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
18 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
19 * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
20 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
21 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
22 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
23 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
24 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
25 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
26 * POSSIBILITY OF SUCH DAMAGE.
27 */
28
29/*-
30 * Copyright 1996-1998 John D. Polstra.
31 * All rights reserved.
32 *
33 * Redistribution and use in source and binary forms, with or without
34 * modification, are permitted provided that the following conditions
35 * are met:
36 * 1. Redistributions of source code must retain the above copyright
37 *    notice, this list of conditions and the following disclaimer.
38 * 2. Redistributions in binary form must reproduce the above copyright
39 *    notice, this list of conditions and the following disclaimer in the
40 *    documentation and/or other materials provided with the distribution.
41 *
42 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
43 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
44 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
45 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
46 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
47 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
48 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
49 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
50 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
51 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
52 */
53
54#include <sys/cdefs.h>
55__KERNEL_RCSID(0, "$NetBSD: kobj_machdep.c,v 1.1 2008/01/04 16:19:25 ad Exp $");
56
57#define	ELFSIZE		ARCH_ELFSIZE
58
59#include <sys/param.h>
60#include <sys/systm.h>
61#include <sys/kobj.h>
62#include <sys/exec.h>
63#include <sys/exec_elf.h>
64
65int
66kobj_reloc(kobj_t ko, uintptr_t relocbase, const void *data,
67	   bool isrela, bool local)
68{
69	Elf_Addr *where;
70	Elf_Addr addr;
71	Elf_Addr addend;
72	uintptr_t rtype, symidx;
73	const Elf_Rel *rel;
74	const Elf_Rela *rela;
75
76	if (isrela) {
77		rela = (const Elf_Rela *)data;
78		where = (Elf_Addr *) (relocbase + rela->r_offset);
79		addend = rela->r_addend;
80		rtype = ELF_R_TYPE(rela->r_info);
81		symidx = ELF_R_SYM(rela->r_info);
82	} else {
83		rel = (const Elf_Rel *)data;
84		where = (Elf_Addr *) (relocbase + rel->r_offset);
85		addend = *where;
86		rtype = ELF_R_TYPE(rel->r_info);
87		symidx = ELF_R_SYM(rel->r_info);
88	}
89
90	switch (rtype) {
91	case R_ALPHA_NONE:
92		break;
93
94	case R_ALPHA_REFQUAD:
95		addr = kobj_sym_lookup(ko, symidx);
96		if (addr == 0)
97			return -1;
98		addr += addend;
99		if (*where != addr)
100			*where = addr;
101		break;
102
103	case R_ALPHA_GLOB_DAT:
104		addr = kobj_sym_lookup(ko, symidx);
105		if (addr == 0)
106			return -1;
107		addr += addend;
108		if (*where != addr)
109			*where = addr;
110		break;
111
112	case R_ALPHA_JMP_SLOT:
113		/* No point in lazy binding for kernel modules. */
114		addr = kobj_sym_lookup(ko, symidx);
115		if (addr == 0)
116			return -1;
117		if (*where != addr)
118			*where = addr;
119		break;
120
121	case R_ALPHA_RELATIVE:
122		addr = relocbase + addend;
123		if (*where != addr)
124			*where = addr;
125		break;
126
127	case R_ALPHA_COPY:
128		/*
129		 * There shouldn't be copy relocations in kernel
130		 * objects.
131		 */
132		printf("kobj_reloc: unexpected R_COPY relocation\n");
133		return -1;
134
135	default:
136		printf("kobj_reloc: unexpected relocation type %d\n",
137		    (int)rtype);
138		return -1;
139	}
140
141	return 0;
142}
143
144int
145kobj_machdep(kobj_t ko, void *base, size_t size, bool load)
146{
147
148	return 0;
149}
150