sh: Add die chain notifiers.
Add the atomic die chains in, kprobes needs these.
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
diff --git a/include/asm-sh/kdebug.h b/include/asm-sh/kdebug.h
new file mode 100644
index 0000000..ef009ba
--- /dev/null
+++ b/include/asm-sh/kdebug.h
@@ -0,0 +1,35 @@
+#ifndef __ASM_SH_KDEBUG_H
+#define __ASM_SH_KDEBUG_H
+
+#include <linux/notifier.h>
+
+struct pt_regs;
+
+struct die_args {
+ struct pt_regs *regs;
+ int trapnr;
+};
+
+int register_die_notifier(struct notifier_block *nb);
+int unregister_die_notifier(struct notifier_block *nb);
+int register_page_fault_notifier(struct notifier_block *nb);
+int unregister_page_fault_notifier(struct notifier_block *nb);
+extern struct atomic_notifier_head shdie_chain;
+
+/* Grossly misnamed. */
+enum die_val {
+ DIE_TRAP,
+ DIE_PAGE_FAULT,
+};
+
+static inline int notify_die(enum die_val val, struct pt_regs *regs,
+ int trap, int sig)
+{
+ struct die_args args = {
+ .regs = regs,
+ .trapnr = trap,
+ };
+
+ return atomic_notifier_call_chain(&shdie_chain, val, &args);
+}
+#endif /* __ASM_SH_KDEBUG_H */
diff --git a/include/asm-sh/system.h b/include/asm-sh/system.h
index 4a6a19f..127af30 100644
--- a/include/asm-sh/system.h
+++ b/include/asm-sh/system.h
@@ -9,6 +9,7 @@
#include <linux/irqflags.h>
#include <linux/compiler.h>
#include <asm/types.h>
+#include <asm/ptrace.h>
/*
* switch_to() should switch tasks to task nr n, first
@@ -255,6 +256,8 @@
(unsigned long)_n_, sizeof(*(ptr))); \
})
+extern void die(const char *str, struct pt_regs *regs, long err) __attribute__ ((noreturn));
+
extern void *set_exception_table_vec(unsigned int vec, void *handler);
static inline void *set_exception_table_evt(unsigned int evt, void *handler)