kernel_optimize_test/include/asm-alpha/bug.h
Andrew Morton ed6b9b97f4 alpha: teach the compiler that BUG doesn't return
Fix things like this:

security/selinux/netnode.c: In function 'sel_netnode_find':
security/selinux/netnode.c:126: warning: 'idx' may be used uninitialized in this function
security/selinux/netnode.c: In function 'sel_netnode_sid':
security/selinux/netnode.c:225: warning: 'ret' may be used uninitialized in this function
security/selinux/netnode.c:168: warning: 'idx' may be used uninitialized in this function

due to code correctly not expecting BUG() to return.

For some reason this reduces the object code size for that particular file.

Cc: Ivan Kokshaysky <ink@jurassic.park.msu.ru>
Cc: Richard Henderson <rth@twiddle.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-04-28 08:58:27 -07:00

29 lines
575 B
C

#ifndef _ALPHA_BUG_H
#define _ALPHA_BUG_H
#include <linux/linkage.h>
#ifdef CONFIG_BUG
#include <asm/pal.h>
/* ??? Would be nice to use .gprel32 here, but we can't be sure that the
function loaded the GP, so this could fail in modules. */
static inline void ATTRIB_NORET __BUG(const char *file, int line)
{
__asm__ __volatile__(
"call_pal %0 # bugchk\n\t"
".long %1\n\t.8byte %2"
: : "i" (PAL_bugchk), "i"(line), "i"(file));
for ( ; ; )
;
}
#define BUG() __BUG(__FILE__, __LINE__)
#define HAVE_ARCH_BUG
#endif
#include <asm-generic/bug.h>
#endif