diff options
Diffstat (limited to 'arch/i386/kernel/module_32.c')
-rw-r--r-- | arch/i386/kernel/module_32.c | 152 |
1 files changed, 0 insertions, 152 deletions
diff --git a/arch/i386/kernel/module_32.c b/arch/i386/kernel/module_32.c deleted file mode 100644 index 3db0a5442eb1..000000000000 --- a/arch/i386/kernel/module_32.c +++ /dev/null | |||
@@ -1,152 +0,0 @@ | |||
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 | #include <linux/bug.h> | ||
25 | |||
26 | #if 0 | ||
27 | #define DEBUGP printk | ||
28 | #else | ||
29 | #define DEBUGP(fmt...) | ||
30 | #endif | ||
31 | |||
32 | void *module_alloc(unsigned long size) | ||
33 | { | ||
34 | if (size == 0) | ||
35 | return NULL; | ||
36 | return vmalloc_exec(size); | ||
37 | } | ||
38 | |||
39 | |||
40 | /* Free memory returned from module_alloc */ | ||
41 | void module_free(struct module *mod, void *module_region) | ||
42 | { | ||
43 | vfree(module_region); | ||
44 | /* FIXME: If module_region == mod->init_region, trim exception | ||
45 | table entries. */ | ||
46 | } | ||
47 | |||
48 | /* We don't need anything special. */ | ||
49 | int module_frob_arch_sections(Elf_Ehdr *hdr, | ||
50 | Elf_Shdr *sechdrs, | ||
51 | char *secstrings, | ||
52 | struct module *mod) | ||
53 | { | ||
54 | return 0; | ||
55 | } | ||
56 | |||
57 | int apply_relocate(Elf32_Shdr *sechdrs, | ||
58 | const char *strtab, | ||
59 | unsigned int symindex, | ||
60 | unsigned int relsec, | ||
61 | struct module *me) | ||
62 | { | ||
63 | unsigned int i; | ||
64 | Elf32_Rel *rel = (void *)sechdrs[relsec].sh_addr; | ||
65 | Elf32_Sym *sym; | ||
66 | uint32_t *location; | ||
67 | |||
68 | DEBUGP("Applying relocate section %u to %u\n", relsec, | ||
69 | sechdrs[relsec].sh_info); | ||
70 | for (i = 0; i < sechdrs[relsec].sh_size / sizeof(*rel); i++) { | ||
71 | /* This is where to make the change */ | ||
72 | location = (void *)sechdrs[sechdrs[relsec].sh_info].sh_addr | ||
73 | + rel[i].r_offset; | ||
74 | /* This is the symbol it is referring to. Note that all | ||
75 | undefined symbols have been resolved. */ | ||
76 | sym = (Elf32_Sym *)sechdrs[symindex].sh_addr | ||
77 | + ELF32_R_SYM(rel[i].r_info); | ||
78 | |||
79 | switch (ELF32_R_TYPE(rel[i].r_info)) { | ||
80 | case R_386_32: | ||
81 | /* We add the value into the location given */ | ||
82 | *location += sym->st_value; | ||
83 | break; | ||
84 | case R_386_PC32: | ||
85 | /* Add the value, subtract its postition */ | ||
86 | *location += sym->st_value - (uint32_t)location; | ||
87 | break; | ||
88 | default: | ||
89 | printk(KERN_ERR "module %s: Unknown relocation: %u\n", | ||
90 | me->name, ELF32_R_TYPE(rel[i].r_info)); | ||
91 | return -ENOEXEC; | ||
92 | } | ||
93 | } | ||
94 | return 0; | ||
95 | } | ||
96 | |||
97 | int apply_relocate_add(Elf32_Shdr *sechdrs, | ||
98 | const char *strtab, | ||
99 | unsigned int symindex, | ||
100 | unsigned int relsec, | ||
101 | struct module *me) | ||
102 | { | ||
103 | printk(KERN_ERR "module %s: ADD RELOCATION unsupported\n", | ||
104 | me->name); | ||
105 | return -ENOEXEC; | ||
106 | } | ||
107 | |||
108 | int module_finalize(const Elf_Ehdr *hdr, | ||
109 | const Elf_Shdr *sechdrs, | ||
110 | struct module *me) | ||
111 | { | ||
112 | const Elf_Shdr *s, *text = NULL, *alt = NULL, *locks = NULL, | ||
113 | *para = NULL; | ||
114 | char *secstrings = (void *)hdr + sechdrs[hdr->e_shstrndx].sh_offset; | ||
115 | |||
116 | for (s = sechdrs; s < sechdrs + hdr->e_shnum; s++) { | ||
117 | if (!strcmp(".text", secstrings + s->sh_name)) | ||
118 | text = s; | ||
119 | if (!strcmp(".altinstructions", secstrings + s->sh_name)) | ||
120 | alt = s; | ||
121 | if (!strcmp(".smp_locks", secstrings + s->sh_name)) | ||
122 | locks= s; | ||
123 | if (!strcmp(".parainstructions", secstrings + s->sh_name)) | ||
124 | para = s; | ||
125 | } | ||
126 | |||
127 | if (alt) { | ||
128 | /* patch .altinstructions */ | ||
129 | void *aseg = (void *)alt->sh_addr; | ||
130 | apply_alternatives(aseg, aseg + alt->sh_size); | ||
131 | } | ||
132 | if (locks && text) { | ||
133 | void *lseg = (void *)locks->sh_addr; | ||
134 | void *tseg = (void *)text->sh_addr; | ||
135 | alternatives_smp_module_add(me, me->name, | ||
136 | lseg, lseg + locks->sh_size, | ||
137 | tseg, tseg + text->sh_size); | ||
138 | } | ||
139 | |||
140 | if (para) { | ||
141 | void *pseg = (void *)para->sh_addr; | ||
142 | apply_paravirt(pseg, pseg + para->sh_size); | ||
143 | } | ||
144 | |||
145 | return module_bug_finalize(hdr, sechdrs, me); | ||
146 | } | ||
147 | |||
148 | void module_arch_cleanup(struct module *mod) | ||
149 | { | ||
150 | alternatives_smp_module_del(mod); | ||
151 | module_bug_cleanup(mod); | ||
152 | } | ||