#ifndef __ASM_X8664_BUG_H #define __ASM_X8664_BUG_H 1 #include <linux/stringify.h> /* * Tell the user there is some problem. The exception handler decodes * this frame. */ struct bug_frame { unsigned char ud2[2]; unsigned char push; signed int filename; unsigned char ret; unsigned short line; } __attribute__((packed)); #ifdef CONFIG_BUG #define HAVE_ARCH_BUG /* We turn the bug frame into valid instructions to not confuse the disassembler. Thanks to Jan Beulich & Suresh Siddha for nice instruction selection. The magic numbers generate mov $64bitimm,%eax ; ret $offset. */ #define BUG() \ asm volatile( \ "ud2 ; pushq $%c1 ; ret $%c0" :: \ "i"(__LINE__), "i" (__FILE__)) void out_of_line_bug(void); #else static inline void out_of_line_bug(void) { } #endif #include <asm-generic/bug.h> #endif