From 2823d4da5d8a0c222747b24eceb65f5b30717d02 Mon Sep 17 00:00:00 2001 From: "H. Peter Anvin" Date: Wed, 8 Jun 2016 12:38:37 -0700 Subject: 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 Link: http://lkml.kernel.org/r/1465414726-197858-2-git-send-email-hpa@linux.intel.com Reviewed-by: Andy Lutomirski Reviewed-by: Borislav Petkov Acked-by: Peter Zijlstra (Intel) --- arch/x86/include/asm/signal.h | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) (limited to 'arch/x86/include/asm/signal.h') 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; } -- cgit v1.2.3