sh64: Provide EXPEVT helper.

We need a lookup_exception_vector() helper for sh64 in order to use the
common page fault code.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>

1 files changed, 14 insertions, 0 deletions

diff --git a/arch/sh/include/asm/traps_64.h b/arch/sh/include/asm/traps_64.h
index c52d7f9a06c1..ef5eff919449 100644
--- a/arch/sh/include/asm/traps_64.h
+++ b/arch/sh/include/asm/traps_64.h
@@ -10,8 +10,22 @@
 #ifndef __ASM_SH_TRAPS_64_H
 #define __ASM_SH_TRAPS_64_H
 
+#include <cpu/registers.h>
+
 extern void phys_stext(void);
 
+#define lookup_exception_vector()               \
+({                                              \
+        unsigned long _vec;                     \
+                                                \
+        __asm__ __volatile__ (                  \
+                "getcon " __EXPEVT ", %0\n\t"   \
+                : "=r" (_vec)                   \
+        );                                      \
+                                                \
+        _vec;                                   \
+})
+
 static inline void trigger_address_error(void)
 {
         phys_stext();