This commit was manufactured by cvs2svn to create branch 'vserver'.

[linux-2.6.git] / arch / mips / kernel / module.c

diff --git a/arch/mips/kernel/module.c b/arch/mips/kernel/module.c
new file mode 100644 (file)
index 0000000..5816870
--- /dev/null
+++ b/arch/mips/kernel/module.c
@@ -0,0 +1,53 @@
+#include <linux/module.h>
+#include <linux/spinlock.h>
+
+static LIST_HEAD(dbe_list);
+static spinlock_t dbe_lock = SPIN_LOCK_UNLOCKED;
+
+/* Given an address, look for it in the module exception tables. */
+const struct exception_table_entry *search_module_dbetables(unsigned long addr)
+{
+       unsigned long flags;
+       const struct exception_table_entry *e = NULL;
+       struct mod_arch_specific *dbe;
+
+       spin_lock_irqsave(&dbe_lock, flags);
+       list_for_each_entry(dbe, &dbe_list, dbe_list) {
+               e = search_extable(dbe->dbe_start, dbe->dbe_end - 1, addr);
+               if (e)
+                       break;
+       }
+       spin_unlock_irqrestore(&dbe_lock, flags);
+
+       /* Now, if we found one, we are running inside it now, hence
+           we cannot unload the module, hence no refcnt needed. */
+       return e;
+}
+
+/* Put in dbe list if neccessary. */
+int module_finalize(const Elf_Ehdr *hdr,
+                   const Elf_Shdr *sechdrs,
+                   struct module *me)
+{
+       const Elf_Shdr *s;
+       char *secstrings = (void *)hdr + sechdrs[hdr->e_shstrndx].sh_offset;
+
+       INIT_LIST_HEAD(&me->arch.dbe_list);
+       for (s = sechdrs; s < sechdrs + hdr->e_shnum; s++) {
+               if (strcmp("__dbe_table", secstrings + s->sh_name) != 0)
+                       continue;
+               me->arch.dbe_start = (void *)s->sh_addr;
+               me->arch.dbe_end = (void *)s->sh_addr + s->sh_size;
+               spin_lock_irq(&dbe_lock);
+               list_add(&me->arch.dbe_list, &dbe_list);
+               spin_unlock_irq(&dbe_lock);
+       }
+       return 0;
+}
+
+void module_arch_cleanup(struct module *mod)
+{
+       spin_lock_irq(&dbe_lock);
+       list_del(&mod->arch.dbe_list);
+       spin_unlock_irq(&dbe_lock);
+}