From 7aff5a70f3580426865b6c86437a3e47546d13f7 Mon Sep 17 00:00:00 2001 From: Hauke Mehrtens Date: Sun, 16 Dec 2018 13:02:49 +0100 Subject: [PATCH] bn_mul.h: Use optimized MULADDC code only on ARM >= 6 The optimized code uses umaal which was only introduced with ARMv6 and is not available on older versions. This broke compilation with arm926ej-s CPU for me. Fixes: 16b1bd89326 ("bn_mul.h: add ARM DSP optimized MULADDC code") Signed-off-by: Hauke Mehrtens --- include/mbedtls/bn_mul.h | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) --- a/include/mbedtls/bn_mul.h +++ b/include/mbedtls/bn_mul.h @@ -638,7 +638,8 @@ "r6", "r7", "r8", "r9", "cc" \ ); -#elif defined (__ARM_FEATURE_DSP) && (__ARM_FEATURE_DSP == 1) +#elif defined (__ARM_FEATURE_DSP) && (__ARM_FEATURE_DSP == 1) && \ + __TARGET_ARCH_ARM >= 6 #define MULADDC_INIT \ asm(