1 /* $NetBSD: kobj_machdep.c,v 1.8 2023/04/28 07:33:56 skrll 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 #include <sys/cdefs.h>
30 __KERNEL_RCSID(0, "$NetBSD: kobj_machdep.c,v 1.8 2023/04/28 07:33:56 skrll Exp $");
31
32 #define ELFSIZE ARCH_ELFSIZE
33
34 #include <sys/param.h>
35 #include <sys/systm.h>
36 #include <sys/kobj.h>
37 #include <sys/exec.h>
38 #include <sys/exec_elf.h>
39
40 #include <sh3/cache.h>
41
42 int
kobj_reloc(kobj_t ko,uintptr_t relocbase,const void * data,bool isrela,bool local)43 kobj_reloc(kobj_t ko, uintptr_t relocbase, const void *data,
44 bool isrela, bool local)
45 {
46 const Elf_Rela *rela;
47 Elf_Addr *where;
48 uintptr_t addr, tmp;
49 int symidx, rtype;
50 int error;
51
52 if (!isrela) {
53 printf("kobj_reloc: support only RELA relocations\n");
54 return -1;
55 }
56
57 rela = data;
58 where = (Elf_Addr *)(relocbase + rela->r_offset);
59 symidx = ELF_R_SYM(rela->r_info);
60 rtype = ELF_R_TYPE(rela->r_info);
61
62 const Elf_Sym *sym = kobj_symbol(ko, symidx);
63
64 if (!local && ELF_ST_BIND(sym->st_info) == STB_LOCAL) {
65 return 0;
66 }
67
68 switch (rtype) {
69 case R_TYPE(NONE):
70 break;
71
72 case R_TYPE(DIR32):
73 case R_TYPE(REL32):
74 error = kobj_sym_lookup(ko, symidx, &addr);
75 if (error)
76 return -1;
77
78 tmp = (Elf_Addr)(addr + *where + rela->r_addend);
79 if (rtype == R_TYPE(REL32))
80 tmp -= (uintptr_t)where;
81 *where = tmp;
82 break;
83
84 default:
85 printf("kobj_reloc: unexpected reloc type %d\n", (int)rtype);
86 return -1;
87 }
88
89 return 0;
90 }
91
92 int
kobj_machdep(kobj_t ko,void * base,size_t size,bool load)93 kobj_machdep(kobj_t ko, void *base, size_t size, bool load)
94 {
95
96 if (load)
97 sh_icache_sync_range((vaddr_t)base, size);
98
99 return 0;
100 }
101