linux/include/asm-x86_64/bug.h

#ifndef __ASM_X8664_BUG_H
#define __ASM_X8664_BUG_H 1

#ifdef CONFIG_BUG
#define HAVE_ARCH_BUG

#ifdef CONFIG_DEBUG_BUGVERBOSE
#define BUG()								\
	do {								\
		asm volatile("1:\tud2\n"				\
			     ".pushsection __bug_table,\"a\"\n"		\
			     "2:\t.quad 1b, %c0\n"			\
			     "\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

void out_of_line_bug(void);
#else
static inline void out_of_line_bug(void) { }
#endif

#include <asm-generic/bug.h>
#endif