1 files changed, 79 insertions, 0 deletions
diff --git a/arch/sh/include/asm/bug.h b/arch/sh/include/asm/bug.h
new file mode 100644
index 000000000000..c01718040166
--- /dev/null
+++ b/arch/sh/include/asm/bug.h
@@ -0,0 +1,79 @@
+#ifndef __ASM_SH_BUG_H
+#define __ASM_SH_BUG_H
+
+#define TRAPA_BUG_OPCODE	0xc33e	/* trapa #0x3e */
+
+#ifdef CONFIG_GENERIC_BUG
+#define HAVE_ARCH_BUG
+#define HAVE_ARCH_WARN_ON
+
+/**
+ * _EMIT_BUG_ENTRY
+ * %1 - __FILE__
+ * %2 - __LINE__
+ * %3 - trap type
+ * %4 - sizeof(struct bug_entry)
+ *
+ * The trapa opcode itself sits in %0.
+ * The %O notation is used to avoid # generation.
+ *
+ * The offending file and line are encoded in the __bug_table section.
+ */
+#ifdef CONFIG_DEBUG_BUGVERBOSE
+#define _EMIT_BUG_ENTRY				\
+	"\t.pushsection __bug_table,\"a\"\n"	\
+	"2:\t.long 1b, %O1\n"			\
+	"\t.short %O2, %O3\n"			\
+	"\t.org 2b+%O4\n"			\
+	"\t.popsection\n"
+#else
+#define _EMIT_BUG_ENTRY				\
+	"\t.pushsection __bug_table,\"a\"\n"	\
+	"2:\t.long 1b\n"			\
+	"\t.short %O3\n"			\
+	"\t.org 2b+%O4\n"			\
+	"\t.popsection\n"
+#endif
+
+#define BUG()						\
+do {							\
+	__asm__ __volatile__ (				\
+		"1:\t.short %O0\n"			\
+		_EMIT_BUG_ENTRY				\
+		 :					\
+		 : "n" (TRAPA_BUG_OPCODE),		\
+		   "i" (__FILE__),			\
+		   "i" (__LINE__), "i" (0),		\
+		   "i" (sizeof(struct bug_entry)));	\
+} while (0)
+
+#define __WARN()					\
+do {							\
+	__asm__ __volatile__ (				\
+		"1:\t.short %O0\n"			\
+		 _EMIT_BUG_ENTRY			\
+		 :					\
+		 : "n" (TRAPA_BUG_OPCODE),		\
+		   "i" (__FILE__),			\
+		   "i" (__LINE__),			\
+		   "i" (BUGFLAG_WARNING),		\
+		   "i" (sizeof(struct bug_entry)));	\
+} while (0)
+
+#define WARN_ON(x) ({						\
+	int __ret_warn_on = !!(x);				\
+	if (__builtin_constant_p(__ret_warn_on)) {		\
+		if (__ret_warn_on)				\
+			__WARN();				\
+	} else {						\
+		if (unlikely(__ret_warn_on))			\
+			__WARN();				\
+	}							\
+	unlikely(__ret_warn_on);				\
+})
+
+#endif /* CONFIG_GENERIC_BUG */
+
+#include <asm-generic/bug.h>
+
+#endif /* __ASM_SH_BUG_H */