diff options
| author | H. Peter Anvin <hpa@zytor.com> | 2016-06-08 12:38:37 -0700 |
|---|---|---|
| committer | H. Peter Anvin <hpa@linux.intel.com> | 2016-06-08 12:41:20 -0700 |
| commit | 2823d4da5d8a0c222747b24eceb65f5b30717d02 (patch) | |
| tree | d3c6753cdc372ee320aa6b9b289ff3c81987cbe3 /arch/x86/include/asm/signal.h | |
| parent | f5967101e9de12addcda4510dfbac66d7c5779c3 (diff) | |
x86, bitops: remove use of "sbb" to return CF
Use SETC instead of SBB to return the value of CF from assembly. Using
SETcc enables uniformity with other flags-returning pieces of assembly
code.
Signed-off-by: H. Peter Anvin <hpa@zytor.com>
Link: http://lkml.kernel.org/r/1465414726-197858-2-git-send-email-hpa@linux.intel.com
Reviewed-by: Andy Lutomirski <luto@kernel.org>
Reviewed-by: Borislav Petkov <bp@suse.de>
Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Diffstat (limited to 'arch/x86/include/asm/signal.h')
| -rw-r--r-- | arch/x86/include/asm/signal.h | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/arch/x86/include/asm/signal.h b/arch/x86/include/asm/signal.h index 2138c9ae19ee..dd1e7d6387ab 100644 --- a/arch/x86/include/asm/signal.h +++ b/arch/x86/include/asm/signal.h @@ -81,9 +81,9 @@ static inline int __const_sigismember(sigset_t *set, int _sig) static inline int __gen_sigismember(sigset_t *set, int _sig) { - int ret; - asm("btl %2,%1\n\tsbbl %0,%0" - : "=r"(ret) : "m"(*set), "Ir"(_sig-1) : "cc"); + unsigned char ret; + asm("btl %2,%1\n\tsetc %0" + : "=qm"(ret) : "m"(*set), "Ir"(_sig-1) : "cc"); return ret; } |