1 #include <linux/module.h>
2 #include <linux/spinlock.h>
4 static LIST_HEAD(dbe_list);
5 static DEFINE_SPINLOCK(dbe_lock);
7 /* Given an address, look for it in the module exception tables. */
8 const struct exception_table_entry *search_module_dbetables(unsigned long addr)
11 const struct exception_table_entry *e = NULL;
12 struct mod_arch_specific *dbe;
14 spin_lock_irqsave(&dbe_lock, flags);
15 list_for_each_entry(dbe, &dbe_list, dbe_list) {
16 e = search_extable(dbe->dbe_start, dbe->dbe_end - 1, addr);
20 spin_unlock_irqrestore(&dbe_lock, flags);
22 /* Now, if we found one, we are running inside it now, hence
23 we cannot unload the module, hence no refcnt needed. */
27 /* Put in dbe list if neccessary. */
28 int module_finalize(const Elf_Ehdr *hdr,
29 const Elf_Shdr *sechdrs,
33 char *secstrings = (void *)hdr + sechdrs[hdr->e_shstrndx].sh_offset;
35 INIT_LIST_HEAD(&me->arch.dbe_list);
36 for (s = sechdrs; s < sechdrs + hdr->e_shnum; s++) {
37 if (strcmp("__dbe_table", secstrings + s->sh_name) != 0)
39 me->arch.dbe_start = (void *)s->sh_addr;
40 me->arch.dbe_end = (void *)s->sh_addr + s->sh_size;
41 spin_lock_irq(&dbe_lock);
42 list_add(&me->arch.dbe_list, &dbe_list);
43 spin_unlock_irq(&dbe_lock);
48 void module_arch_cleanup(struct module *mod)
50 spin_lock_irq(&dbe_lock);
51 list_del(&mod->arch.dbe_list);
52 spin_unlock_irq(&dbe_lock);