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bn_mul.h: disable MULADDC code for cpu before armv6 #2324

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bn_mul.h: disable MULADDC code for cpu before armv6 #2324

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3 changes: 3 additions & 0 deletions ChangeLog
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Expand Up @@ -11,6 +11,9 @@ Bugfix
previously lead to a stack overflow on constrained targets.
* Add `MBEDTLS_SELF_TEST` for the mbedtls_self_test functions
in the header files, which missed the precompilation check. #971
* Fix compilation issue on ARM platform before armv6.
The `umaal` arm instruction is only available on ARM cpu with DSP starting
with armv6. Fixed by Vivien HENRIET (Overkiz). #2324

= mbed TLS 2.16.0 branch released 2018-12-21

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2 changes: 1 addition & 1 deletion include/mbedtls/bn_mul.h
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Expand Up @@ -636,7 +636,7 @@
"r6", "r7", "r8", "r9", "cc" \
);

#elif defined (__ARM_FEATURE_DSP) && (__ARM_FEATURE_DSP == 1)
#elif defined (__ARM_FEATURE_DSP) && (__ARM_FEATURE_DSP == 1) && (__ARM_ARCH >= 6)

#define MULADDC_INIT \
asm(
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