x86, um: ... and asm-x86 move

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: H. Peter Anvin <hpa@zytor.com>

arch/x86/include/asm/bug.h

@@ -0,0 +1,39 @@
+#ifndef ASM_X86__BUG_H
+#define ASM_X86__BUG_H
+
+#ifdef CONFIG_BUG
+#define HAVE_ARCH_BUG
+
+#ifdef CONFIG_DEBUG_BUGVERBOSE
+
+#ifdef CONFIG_X86_32
+# define __BUG_C0	"2:\t.long 1b, %c0\n"
+#else
+# define __BUG_C0	"2:\t.quad 1b, %c0\n"
+#endif
+
+#define BUG()							\
+do {								\
+	asm volatile("1:\tud2\n"				\
+		     ".pushsection __bug_table,\"a\"\n"		\
+		     __BUG_C0					\
+		     "\t.word %c1, 0\n"				\
+		     "\t.org 2b+%c2\n"				\
+		     ".popsection"				\
+		     : : "i" (__FILE__), "i" (__LINE__),	\
+		     "i" (sizeof(struct bug_entry)));		\
+	for (;;) ;						\
+} while (0)
+
+#else
+#define BUG()							\
+do {								\
+	asm volatile("ud2");					\
+	for (;;) ;						\
+} while (0)
+#endif
+
+#endif /* !CONFIG_BUG */
+
+#include <asm-generic/bug.h>
+#endif /* ASM_X86__BUG_H */