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