bug.h

来自「linux 内核源代码」· C头文件 代码 · 共 43 行

#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

void out_of_line_bug(void);
#else /* CONFIG_BUG */
static inline void out_of_line_bug(void) { }
#endif /* !CONFIG_BUG */

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