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authorLinus Torvalds <torvalds@ppc970.osdl.org>2005-04-16 18:20:36 -0400
committerLinus Torvalds <torvalds@ppc970.osdl.org>2005-04-16 18:20:36 -0400
commit1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 (patch)
tree0bba044c4ce775e45a88a51686b5d9f90697ea9d /arch/cris/kernel/module.c
Linux-2.6.12-rc2v2.6.12-rc2
Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
Diffstat (limited to 'arch/cris/kernel/module.c')
-rw-r--r--arch/cris/kernel/module.c121
1 files changed, 121 insertions, 0 deletions
diff --git a/arch/cris/kernel/module.c b/arch/cris/kernel/module.c
new file mode 100644
index 000000000000..f1d3e784f30c
--- /dev/null
+++ b/arch/cris/kernel/module.c
@@ -0,0 +1,121 @@
1/* Kernel module help for i386.
2 Copyright (C) 2001 Rusty Russell.
3
4 This program is free software; you can redistribute it and/or modify
5 it under the terms of the GNU General Public License as published by
6 the Free Software Foundation; either version 2 of the License, or
7 (at your option) any later version.
8
9 This program is distributed in the hope that it will be useful,
10 but WITHOUT ANY WARRANTY; without even the implied warranty of
11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 GNU General Public License for more details.
13
14 You should have received a copy of the GNU General Public License
15 along with this program; if not, write to the Free Software
16 Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
17*/
18#include <linux/moduleloader.h>
19#include <linux/elf.h>
20#include <linux/vmalloc.h>
21#include <linux/fs.h>
22#include <linux/string.h>
23#include <linux/kernel.h>
24
25#if 0
26#define DEBUGP printk
27#else
28#define DEBUGP(fmt , ...)
29#endif
30
31void *module_alloc(unsigned long size)
32{
33 if (size == 0)
34 return NULL;
35 return vmalloc(size);
36}
37
38
39/* Free memory returned from module_alloc */
40void module_free(struct module *mod, void *module_region)
41{
42 vfree(module_region);
43 /* FIXME: If module_region == mod->init_region, trim exception
44 table entries. */
45}
46
47/* We don't need anything special. */
48int module_frob_arch_sections(Elf_Ehdr *hdr,
49 Elf_Shdr *sechdrs,
50 char *secstrings,
51 struct module *mod)
52{
53 return 0;
54}
55
56int apply_relocate(Elf32_Shdr *sechdrs,
57 const char *strtab,
58 unsigned int symindex,
59 unsigned int relsec,
60 struct module *me)
61{
62 unsigned int i;
63 Elf32_Rel *rel = (void *)sechdrs[relsec].sh_addr;
64 Elf32_Sym *sym;
65 uint32_t *location;
66
67 DEBUGP("Applying relocate section %u to %u\n", relsec,
68 sechdrs[relsec].sh_info);
69 for (i = 0; i < sechdrs[relsec].sh_size / sizeof(*rel); i++) {
70 /* This is where to make the change */
71 location = (void *)sechdrs[sechdrs[relsec].sh_info].sh_offset
72 + rel[i].r_offset;
73 /* This is the symbol it is referring to. Note that all
74 undefined symbols have been resolved. */
75 sym = (Elf32_Sym *)sechdrs[symindex].sh_addr
76 + ELF32_R_SYM(rel[i].r_info);
77
78 /* We add the value into the location given */
79 *location += sym->st_value;
80 }
81 return 0;
82}
83
84int apply_relocate_add(Elf32_Shdr *sechdrs,
85 const char *strtab,
86 unsigned int symindex,
87 unsigned int relsec,
88 struct module *me)
89{
90 unsigned int i;
91 Elf32_Rela *rela = (void *)sechdrs[relsec].sh_addr;
92
93 DEBUGP ("Applying relocate section %u to %u\n", relsec,
94 sechdrs[relsec].sh_info);
95
96 for (i = 0; i < sechdrs[relsec].sh_size / sizeof (*rela); i++) {
97 /* This is where to make the change */
98 uint32_t *loc
99 = ((void *)sechdrs[sechdrs[relsec].sh_info].sh_addr
100 + rela[i].r_offset);
101 /* This is the symbol it is referring to. Note that all
102 undefined symbols have been resolved. */
103 Elf32_Sym *sym
104 = ((Elf32_Sym *)sechdrs[symindex].sh_addr
105 + ELF32_R_SYM (rela[i].r_info));
106 *loc = sym->st_value + rela[i].r_addend;
107 }
108
109 return 0;
110}
111
112int module_finalize(const Elf_Ehdr *hdr,
113 const Elf_Shdr *sechdrs,
114 struct module *me)
115{
116 return 0;
117}
118
119void module_arch_cleanup(struct module *mod)
120{
121}