add a_clz_64 helper function

[android-x86/external-musl-libc.git] / arch / aarch64 / atomic_arch.h

diff --git a/arch/aarch64/atomic_arch.h b/arch/aarch64/atomic_arch.h
index 8ab68c1..40fefc2 100644 (file)
--- a/arch/aarch64/atomic_arch.h
+++ b/arch/aarch64/atomic_arch.h
@@ -73,3 +73,10 @@ static inline int a_ctz_64(uint64_t x)
                : "=r"(x) : "r"(x));
        return x;
 }
+
+#define a_clz_64 a_clz_64
+static inline int a_clz_64(uint64_t x)
+{
+       __asm__("clz %0, %1" : "=r"(x) : "r"(x));
+       return x;
+}