linux/arch/x86/include/asm/bug.h
Jan Beulich b93a531e31 allow bug table entries to use relative pointers (and use it on x86-64)
Impact: reduce bug table size

This allows reducing the bug table size by half. Perhaps there are
other 64-bit architectures that could also make use of this.

Signed-off-by: Jan Beulich <jbeulich@novell.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-12-16 18:40:32 +01:00

39 lines
778 B
C

#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.long 1b - 2b, %c0 - 2b\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
#endif /* !CONFIG_BUG */
#include <asm-generic/bug.h>
#endif /* _ASM_X86_BUG_H */