package/libs/mbedtls/patches/300-bn_mul.h-Use-optimized-MULADDC-code-only-on-ARM-6.patch

   1 From 7aff5a70f3580426865b6c86437a3e47546d13f7 Mon Sep 17 00:00:00 2001
   2 From: Hauke Mehrtens <hauke@hauke-m.de>
   3 Date: Sun, 16 Dec 2018 13:02:49 +0100
   4 Subject: [PATCH] bn_mul.h: Use optimized MULADDC code only on ARM >= 6
   5
   6 The optimized code uses umaal which was only introduced with ARMv6 and
   7 is not available on older versions.
   8 This broke compilation with arm926ej-s CPU for me.
   9
  10 Fixes: 16b1bd89326 ("bn_mul.h: add ARM DSP optimized MULADDC code")
  11 Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>
  12 ---
  13  include/mbedtls/bn_mul.h | 3 ++-
  14  1 file changed, 2 insertions(+), 1 deletion(-)
  15
  16 --- a/include/mbedtls/bn_mul.h
  17 +++ b/include/mbedtls/bn_mul.h
  18 @@ -638,7 +638,8 @@
  19             "r6", "r7", "r8", "r9", "cc"         \
  20           );
  21
  22 -#elif defined (__ARM_FEATURE_DSP) && (__ARM_FEATURE_DSP == 1)
  23 +#elif defined (__ARM_FEATURE_DSP) && (__ARM_FEATURE_DSP == 1) && \
  24 +      __TARGET_ARCH_ARM >= 6
  25
  26  #define MULADDC_INIT                            \
  27      asm(