summaryrefslogtreecommitdiff
path: root/arch/x86/kernel/module_32.c
diff options
context:
space:
mode:
Diffstat (limited to 'arch/x86/kernel/module_32.c')
-rw-r--r--arch/x86/kernel/module_32.c152
1 files changed, 0 insertions, 152 deletions
diff --git a/arch/x86/kernel/module_32.c b/arch/x86/kernel/module_32.c
deleted file mode 100644
index 0edd819050e7..000000000000
--- a/arch/x86/kernel/module_32.c
+++ /dev/null
@@ -1,152 +0,0 @@
-/* Kernel module help for i386.
- Copyright (C) 2001 Rusty Russell.
-
- This program is free software; you can redistribute it and/or modify
- it under the terms of the GNU General Public License as published by
- the Free Software Foundation; either version 2 of the License, or
- (at your option) any later version.
-
- This program is distributed in the hope that it will be useful,
- but WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- GNU General Public License for more details.
-
- You should have received a copy of the GNU General Public License
- along with this program; if not, write to the Free Software
- Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
-*/
-#include <linux/moduleloader.h>
-#include <linux/elf.h>
-#include <linux/vmalloc.h>
-#include <linux/fs.h>
-#include <linux/string.h>
-#include <linux/kernel.h>
-#include <linux/bug.h>
-
-#if 0
-#define DEBUGP printk
-#else
-#define DEBUGP(fmt...)
-#endif
-
-void *module_alloc(unsigned long size)
-{
- if (size == 0)
- return NULL;
- return vmalloc_exec(size);
-}
-
-
-/* Free memory returned from module_alloc */
-void module_free(struct module *mod, void *module_region)
-{
- vfree(module_region);
- /* FIXME: If module_region == mod->init_region, trim exception
- table entries. */
-}
-
-/* We don't need anything special. */
-int module_frob_arch_sections(Elf_Ehdr *hdr,
- Elf_Shdr *sechdrs,
- char *secstrings,
- struct module *mod)
-{
- return 0;
-}
-
-int apply_relocate(Elf32_Shdr *sechdrs,
- const char *strtab,
- unsigned int symindex,
- unsigned int relsec,
- struct module *me)
-{
- unsigned int i;
- Elf32_Rel *rel = (void *)sechdrs[relsec].sh_addr;
- Elf32_Sym *sym;
- uint32_t *location;
-
- DEBUGP("Applying relocate section %u to %u\n", relsec,
- sechdrs[relsec].sh_info);
- for (i = 0; i < sechdrs[relsec].sh_size / sizeof(*rel); i++) {
- /* This is where to make the change */
- location = (void *)sechdrs[sechdrs[relsec].sh_info].sh_addr
- + rel[i].r_offset;
- /* This is the symbol it is referring to. Note that all
- undefined symbols have been resolved. */
- sym = (Elf32_Sym *)sechdrs[symindex].sh_addr
- + ELF32_R_SYM(rel[i].r_info);
-
- switch (ELF32_R_TYPE(rel[i].r_info)) {
- case R_386_32:
- /* We add the value into the location given */
- *location += sym->st_value;
- break;
- case R_386_PC32:
- /* Add the value, subtract its postition */
- *location += sym->st_value - (uint32_t)location;
- break;
- default:
- printk(KERN_ERR "module %s: Unknown relocation: %u\n",
- me->name, ELF32_R_TYPE(rel[i].r_info));
- return -ENOEXEC;
- }
- }
- return 0;
-}
-
-int apply_relocate_add(Elf32_Shdr *sechdrs,
- const char *strtab,
- unsigned int symindex,
- unsigned int relsec,
- struct module *me)
-{
- printk(KERN_ERR "module %s: ADD RELOCATION unsupported\n",
- me->name);
- return -ENOEXEC;
-}
-
-int module_finalize(const Elf_Ehdr *hdr,
- const Elf_Shdr *sechdrs,
- struct module *me)
-{
- const Elf_Shdr *s, *text = NULL, *alt = NULL, *locks = NULL,
- *para = NULL;
- char *secstrings = (void *)hdr + sechdrs[hdr->e_shstrndx].sh_offset;
-
- for (s = sechdrs; s < sechdrs + hdr->e_shnum; s++) {
- if (!strcmp(".text", secstrings + s->sh_name))
- text = s;
- if (!strcmp(".altinstructions", secstrings + s->sh_name))
- alt = s;
- if (!strcmp(".smp_locks", secstrings + s->sh_name))
- locks = s;
- if (!strcmp(".parainstructions", secstrings + s->sh_name))
- para = s;
- }
-
- if (alt) {
- /* patch .altinstructions */
- void *aseg = (void *)alt->sh_addr;
- apply_alternatives(aseg, aseg + alt->sh_size);
- }
- if (locks && text) {
- void *lseg = (void *)locks->sh_addr;
- void *tseg = (void *)text->sh_addr;
- alternatives_smp_module_add(me, me->name,
- lseg, lseg + locks->sh_size,
- tseg, tseg + text->sh_size);
- }
-
- if (para) {
- void *pseg = (void *)para->sh_addr;
- apply_paravirt(pseg, pseg + para->sh_size);
- }
-
- return module_bug_finalize(hdr, sechdrs, me);
-}
-
-void module_arch_cleanup(struct module *mod)
-{
- alternatives_smp_module_del(mod);
- module_bug_cleanup(mod);
-}