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-rw-r--r--kernel/arch/x86/um/fault.c28
1 files changed, 28 insertions, 0 deletions
diff --git a/kernel/arch/x86/um/fault.c b/kernel/arch/x86/um/fault.c
new file mode 100644
index 000000000..84ac7f7b0
--- /dev/null
+++ b/kernel/arch/x86/um/fault.c
@@ -0,0 +1,28 @@
+/*
+ * Copyright (C) 2002 - 2007 Jeff Dike (jdike@{addtoit,linux.intel}.com)
+ * Licensed under the GPL
+ */
+
+#include <sysdep/ptrace.h>
+
+/* These two are from asm-um/uaccess.h and linux/module.h, check them. */
+struct exception_table_entry
+{
+ unsigned long insn;
+ unsigned long fixup;
+};
+
+const struct exception_table_entry *search_exception_tables(unsigned long add);
+
+/* Compare this to arch/i386/mm/extable.c:fixup_exception() */
+int arch_fixup(unsigned long address, struct uml_pt_regs *regs)
+{
+ const struct exception_table_entry *fixup;
+
+ fixup = search_exception_tables(address);
+ if (fixup) {
+ UPT_IP(regs) = fixup->fixup;
+ return 1;
+ }
+ return 0;
+}