1 files changed, 53 insertions, 0 deletions
diff --git a/arch/mips/kernel/module.c b/arch/mips/kernel/module.c
new file mode 100644
index 00000000000..458af3c7a63
--- /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 DEFINE_SPINLOCK(dbe_lock);
+
+/* 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);
+}