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Merge pull request #4686 from Kazuyuki-Kimura/patch_#2020

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Fixed a bug that the little-endian Microblaze does not work when MBEDTLS_HAVE_ASM is defined
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Dave Rodgman 2022-07-29 17:08:11 +01:00 committed by GitHub
commit 919ff15ecf
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2 changed files with 15 additions and 2 deletions
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3
ChangeLog.d/muladdc_microblaze.txt Normal file
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@ -0,0 +1,3 @@
Bugfix
* Fix support for little-endian Microblaze when MBEDTLS_HAVE_ASM is defined.
Contributed by Kazuyuki Kimura to fix #2020.

14
library/bn_mul.h
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@ -582,10 +582,20 @@
"andi r7, r6, 0xffff \n\t" \
"bsrli r6, r6, 16 \n\t"
#define MULADDC_X1_CORE \
#if(__BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__)
#define MULADDC_LHUI \
"lhui r9, r3, 0 \n\t" \
"addi r3, r3, 2 \n\t" \
"lhui r8, r3, 0 \n\t"
#else
#define MULADDC_LHUI \
"lhui r8, r3, 0 \n\t" \
"addi r3, r3, 2 \n\t" \
"lhui r9, r3, 0 \n\t" \
"lhui r9, r3, 0 \n\t"
#endif
#define MULADDC_X1_CORE \
MULADDC_LHUI \
"addi r3, r3, 2 \n\t" \
"mul r10, r9, r6 \n\t" \
"mul r11, r8, r7 \n\t" \