mirror of
https://github.com/edk2-porting/linux-next.git
synced 2024-12-28 07:04:00 +08:00
c31a0bf3e1
This makes x86-64 use the generic BUG machinery. The main advantage in using the generic BUG machinery for x86-64 is that the inlined overhead of BUG is just the ud2a instruction; the file+line information are no longer inlined into the instruction stream. This reduces cache pollution. Signed-off-by: Jeremy Fitzhardinge <jeremy@goop.org> Cc: Andi Kleen <ak@muc.de> Cc: Hugh Dickens <hugh@veritas.com> Cc: Michael Ellerman <michael@ellerman.id.au> Cc: Paul Mackerras <paulus@samba.org> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Rusty Russell <rusty@rustcorp.com.au> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
35 lines
725 B
C
35 lines
725 B
C
#ifndef __ASM_X8664_BUG_H
|
|
#define __ASM_X8664_BUG_H 1
|
|
|
|
#ifdef CONFIG_BUG
|
|
#define HAVE_ARCH_BUG
|
|
|
|
#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) { }
|
|
#endif
|
|
|
|
#include <asm-generic/bug.h>
|
|
#endif
|