Date: Tue, 27 Feb 2018 16:03:19 -0800 From: "Zhao, Weiming" <weimingz@...eaurora.org> To: musl@...ts.openwall.com Subject: clz instruction is unavailable for Thumb1 In arch/arm/atomic_arch.h, it checks for __ARM_ARCH >= 5, which is not sufficient. for example, for armv6-m, it only support Thumb1, which doesn't include clz. Suggest to check if it's building for thumb1: diff --git a/arch/arm/atomic_arch.h b/arch/arm/atomic_arch.h index c5c56f8..e3cb66a 100644 --- a/arch/arm/atomic_arch.h +++ b/arch/arm/atomic_arch.h @@ -82,7 +82,7 @@ static inline void a_crash() : : : "memory"); } -#if __ARM_ARCH >= 5 +#if __ARM_ARCH >= 5 && !(defined(__thumb__) && !defined(__thumb2)) -- Qualcomm Innovation Center, Inc. is a member of Code Aurora Forum, hosted by The Linux Foundation
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