From 1e98ea50a49712931c482ca490a0ca38e0501602 Mon Sep 17 00:00:00 2001
From: Adrian Bunk <bunk@debian.org>
Date: Fri, 20 Oct 2017 20:57:23 +0200
Subject: [PATCH] CLZ is only available with ARM >= 5
---
arch/arm/atomic_arch.h | 4 ++++
1 file changed, 4 insertions(+)
diff --git a/arch/arm/atomic_arch.h b/arch/arm/atomic_arch.h
index a121010f..c5c56f81 100644
--- a/arch/arm/atomic_arch.h
+++ b/arch/arm/atomic_arch.h
@@ -82,9 +82,13 @@ static inline void a_crash()
: : : "memory");
}
+#if __ARM_ARCH >= 5
+
#define a_clz_32 a_clz_32
static inline int a_clz_32(uint32_t x)
{
__asm__ ("clz %0, %1" : "=r"(x) : "r"(x));
return x;
}
+
+#endif
--
2.15.0.rc1