From 5b61dc111e6171dc28242aa537716d02b68408cc Mon Sep 17 00:00:00 2001 From: cognet Date: Sat, 18 Dec 2004 17:43:01 +0000 Subject: Make sure gcc doesn't generate something such as swp r3, r4, [r3] for __swp, as it has unpredictable results. --- sys/arm/include/atomic.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/sys/arm/include/atomic.h b/sys/arm/include/atomic.h index 9785ba6..ec1fd9f 100644 --- a/sys/arm/include/atomic.h +++ b/sys/arm/include/atomic.h @@ -75,7 +75,7 @@ static __inline uint32_t __swp(uint32_t val, volatile uint32_t *ptr) { __asm __volatile("swp %0, %1, [%2]" - : "=r" (val) : "r" (val) , "r" (ptr) : "memory"); + : "=&r" (val) : "r" (val) , "r" (ptr) : "memory"); return (val); } -- cgit v1.1