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Merge pull request #6156 from daverodgman/microblaze-littleendian-backport-2.28

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Microblaze littleendian backport 2.28
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Dave Rodgman
2022-07-29 17:08:16 +01:00
committed by GitHub
parent 8934db7b8e 7d4a8da1b7
commit 62067bc82f
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
include/mbedtls/bn_mul.h
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@@ -579,10 +579,20 @@
"andi r7, r6, 0xffff \n\t" \
"bsrli r6, r6, 16 \n\t"
#define MULADDC_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_CORE \
MULADDC_LHUI \
"addi r3, r3, 2 \n\t" \
"mul r10, r9, r6 \n\t" \
"mul r11, r8, r7 \n\t" \