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author | Amerigo Wang <amwang@redhat.com> | 2009-06-03 21:46:09 -0400 |
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committer | Rusty Russell <rusty@rustcorp.com.au> | 2009-06-12 21:47:00 +0930 |
commit | 2d5bf28fb9e3c178db4f5536e2fe38d3a5ed7f40 (patch) | |
tree | 30997ca66fea0b95f82b546ecbcd91e249223fb3 /arch/x86/kernel/module.c | |
parent | 2ead9439f0c6ed03faafe27abe8bc1dd256d117b (diff) | |
download | linux-stable-2d5bf28fb9e3c178db4f5536e2fe38d3a5ed7f40.tar.gz linux-stable-2d5bf28fb9e3c178db4f5536e2fe38d3a5ed7f40.tar.bz2 linux-stable-2d5bf28fb9e3c178db4f5536e2fe38d3a5ed7f40.zip |
x86 module: merge the same functions in module_32.c and module_64.c
Merge the same functions both in module_32.c and module_64.c into
module.c.
This is the first step to merge both of them finally.
Signed-off-by: WANG Cong <amwang@redhat.com>
Cc: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Diffstat (limited to 'arch/x86/kernel/module.c')
-rw-r--r-- | arch/x86/kernel/module.c | 98 |
1 files changed, 98 insertions, 0 deletions
diff --git a/arch/x86/kernel/module.c b/arch/x86/kernel/module.c new file mode 100644 index 000000000000..1ea42d083494 --- /dev/null +++ b/arch/x86/kernel/module.c @@ -0,0 +1,98 @@ +/* Kernel module help for x86. + 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> +#include <linux/mm.h> + +#include <asm/system.h> +#include <asm/page.h> +#include <asm/pgtable.h> + +#if 0 +#define DEBUGP printk +#else +#define DEBUGP(fmt...) +#endif + +/* 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 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); +} |