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-rw-r--r--arch/sh/src/atomic.c3
1 files changed, 2 insertions, 1 deletions
diff --git a/arch/sh/src/atomic.c b/arch/sh/src/atomic.c
index d29b0538..13395673 100644
--- a/arch/sh/src/atomic.c
+++ b/arch/sh/src/atomic.c
@@ -1,7 +1,7 @@
#include "libc.h"
#define LLSC_CLOBBERS "r0", "t", "memory"
-#define LLSC_START(mem) \
+#define LLSC_START(mem) "synco\n" \
"0: movli.l @" mem ", r0\n"
#define LLSC_END(mem) \
"1: movco.l r0, @" mem "\n" \
@@ -99,6 +99,7 @@ void __sh_store(volatile int *p, int x)
{
if (__hwcap & CPU_HAS_LLSC) {
__asm__ __volatile__(
+ " synco\n"
" mov.l %1, @%0\n"
" synco\n"
: : "r"(p), "r"(x) : "memory");