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authorH. Peter Anvin <hpa@zytor.com>2016-06-08 12:38:37 -0700
committerH. Peter Anvin <hpa@linux.intel.com>2016-06-08 12:41:20 -0700
commit2823d4da5d8a0c222747b24eceb65f5b30717d02 (patch)
treed3c6753cdc372ee320aa6b9b289ff3c81987cbe3 /arch/x86/include/asm/signal.h
parentf5967101e9de12addcda4510dfbac66d7c5779c3 (diff)
downloadlinux-2823d4da5d8a0c222747b24eceb65f5b30717d02.tar.bz2
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.h6
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;
}