From 1e98ea50a49712931c482ca490a0ca38e0501602 Mon Sep 17 00:00:00 2001 From: Adrian Bunk 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