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authorPaul Mundt <lethal@linux-sh.org>2008-09-21 12:00:23 +0900
committerPaul Mundt <lethal@linux-sh.org>2008-09-21 12:00:23 +0900
commit4c59e2942e92d2d776bcd038604a5c3c1d56d3ac (patch)
tree56185c62c51852cf9c065b4d1b0313f69295bf27 /arch/sh/include
parent347cd34f4b32be30d2a6d92fe4d6eac04b00a637 (diff)
sh: Move lookup_exception_vector() out to asm/system_32.h.
There are other places where we want to have access to the trap/exception number, so move out the lookup_exception_vector() helper. While we're at it, refactor it slightly to return the vector instead. Signed-off-by: Paul Mundt <lethal@linux-sh.org>
Diffstat (limited to 'arch/sh/include')
-rw-r--r--arch/sh/include/asm/system_32.h25
1 files changed, 25 insertions, 0 deletions
diff --git a/arch/sh/include/asm/system_32.h b/arch/sh/include/asm/system_32.h
index f7f105627fd..a726d5d0727 100644
--- a/arch/sh/include/asm/system_32.h
+++ b/arch/sh/include/asm/system_32.h
@@ -97,6 +97,31 @@ do { \
: "=&r" (__dummy)); \
} while (0)
+#ifdef CONFIG_CPU_HAS_SR_RB
+#define lookup_exception_vector() \
+({ \
+ unsigned long _vec; \
+ \
+ __asm__ __volatile__ ( \
+ "stc r2_bank, %0\n\t" \
+ : "=r" (_vec) \
+ ); \
+ \
+ _vec; \
+})
+#else
+#define lookup_exception_vector() \
+({ \
+ unsigned long _vec; \
+ __asm__ __volatile__ ( \
+ "mov r4, %0\n\t" \
+ : "=r" (_vec) \
+ ); \
+ \
+ _vec; \
+})
+#endif
+
int handle_unaligned_access(opcode_t instruction, struct pt_regs *regs,
struct mem_access *ma);