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-rw-r--r--sys/powerpc/include/atomic.h4
1 files changed, 4 insertions, 0 deletions
diff --git a/sys/powerpc/include/atomic.h b/sys/powerpc/include/atomic.h
index d515a6a..4ac9f0c 100644
--- a/sys/powerpc/include/atomic.h
+++ b/sys/powerpc/include/atomic.h
@@ -39,6 +39,10 @@
#define __ATOMIC_BARRIER \
__asm __volatile("sync" : : : "memory")
+#define mb() __ATOMIC_BARRIER
+#define wmb() mb()
+#define rmb() mb()
+
/*
* atomic_add(p, v)
* { *p += v; }
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