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authorRalf Baechle <ralf@linux-mips.org>2006-10-16 01:38:50 +0100
committerRalf Baechle <ralf@linux-mips.org>2006-11-30 01:14:50 +0000
commit63dc68a8cf60cb110b147dab1704d990808b39e2 (patch)
tree48dbc7a170eff5e16c3a1f6bf4fe53ab168c4e83 /include/asm-mips/bug.h
parent005985609ff72df3257fde6b29aa9d71342c2a6b (diff)
[MIPS] Use conditional traps for BUG_ON on MIPS II and better.
This shaves of around 4kB and a few cycles for the average kernel that has CONFIG_BUG enabled. Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Diffstat (limited to 'include/asm-mips/bug.h')
-rw-r--r--include/asm-mips/bug.h12
1 files changed, 12 insertions, 0 deletions
diff --git a/include/asm-mips/bug.h b/include/asm-mips/bug.h
index 7b4739dc8f3..4d560a53394 100644
--- a/include/asm-mips/bug.h
+++ b/include/asm-mips/bug.h
@@ -1,6 +1,7 @@
#ifndef __ASM_BUG_H
#define __ASM_BUG_H
+#include <asm/sgidefs.h>
#ifdef CONFIG_BUG
@@ -13,6 +14,17 @@ do { \
#define HAVE_ARCH_BUG
+#if (_MIPS_ISA > _MIPS_ISA_MIPS1)
+
+#define BUG_ON(condition) \
+do { \
+ __asm__ __volatile__("tne $0, %0" : : "r" (condition)); \
+} while (0)
+
+#define HAVE_ARCH_BUG_ON
+
+#endif /* _MIPS_ISA > _MIPS_ISA_MIPS1 */
+
#endif
#include <asm-generic/bug.h>