| #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 |