diff options
Diffstat (limited to 'include/asm-x86_64/bug.h')
| -rw-r--r-- | include/asm-x86_64/bug.h | 44 |
1 files changed, 22 insertions, 22 deletions
diff --git a/include/asm-x86_64/bug.h b/include/asm-x86_64/bug.h index 80ac1fe966a..68260641491 100644 --- a/include/asm-x86_64/bug.h +++ b/include/asm-x86_64/bug.h @@ -1,30 +1,30 @@ #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__)) + +#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) { } |