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Diffstat (limited to 'arch/sh/include/asm/bug.h')
-rw-r--r--arch/sh/include/asm/bug.h31
1 files changed, 31 insertions, 0 deletions
diff --git a/arch/sh/include/asm/bug.h b/arch/sh/include/asm/bug.h
index c0171804016..d02c01b3e6b 100644
--- a/arch/sh/include/asm/bug.h
+++ b/arch/sh/include/asm/bug.h
@@ -2,6 +2,7 @@
#define __ASM_SH_BUG_H
#define TRAPA_BUG_OPCODE 0xc33e /* trapa #0x3e */
+#define BUGFLAG_UNWINDER (1 << 1)
#ifdef CONFIG_GENERIC_BUG
#define HAVE_ARCH_BUG
@@ -72,6 +73,36 @@ do { \
unlikely(__ret_warn_on); \
})
+#define UNWINDER_BUG() \
+do { \
+ __asm__ __volatile__ ( \
+ "1:\t.short %O0\n" \
+ _EMIT_BUG_ENTRY \
+ : \
+ : "n" (TRAPA_BUG_OPCODE), \
+ "i" (__FILE__), \
+ "i" (__LINE__), \
+ "i" (BUGFLAG_UNWINDER), \
+ "i" (sizeof(struct bug_entry))); \
+} while (0)
+
+#define UNWINDER_BUG_ON(x) ({ \
+ int __ret_unwinder_on = !!(x); \
+ if (__builtin_constant_p(__ret_unwinder_on)) { \
+ if (__ret_unwinder_on) \
+ UNWINDER_BUG(); \
+ } else { \
+ if (unlikely(__ret_unwinder_on)) \
+ UNWINDER_BUG(); \
+ } \
+ unlikely(__ret_unwinder_on); \
+})
+
+#else
+
+#define UNWINDER_BUG BUG
+#define UNWINDER_BUG_ON BUG_ON
+
#endif /* CONFIG_GENERIC_BUG */
#include <asm-generic/bug.h>