lib/mbedtls
1
0
Fork 0
mirror of https://github.com/Mbed-TLS/mbedtls.git synced 2025-07-28 00:21:48 +03:00
Code Activity

Merge pull request #4968 from davidhorstmann-arm/fix-aarch64-asm-constraints

Browse Source 
Fix aarch64 assembly for bignum multiplication
This commit is contained in:
Gilles Peskine
2021-09-27 09:01:15 +02:00
committed by GitHub
parent 27f84fc75c 7500a0e1ea
commit aafb21f320
3 changed files with 12 additions and 11 deletions
Download Patch File Download Diff File Expand all files Collapse all files

14
library/bn_mul.h
View File

@ -224,7 +224,7 @@
"adcq %%rdx, %%rcx\n" \
"addq $8, %%rdi\n"
#define MULADDC_STOP \
#define MULADDC_STOP \
: "+c" (c), "+D" (d), "+S" (s), "+m" (*(uint64_t (*)[16]) d) \
: "b" (b), "m" (*(const uint64_t (*)[16]) s) \
: "rax", "rdx", "r8" \
@ -240,18 +240,18 @@
#define MULADDC_CORE \
"ldr x4, [%2], #8 \n\t" \
"ldr x5, [%1] \n\t" \
"mul x6, x4, %3 \n\t" \
"umulh x7, x4, %3 \n\t" \
"mul x6, x4, %4 \n\t" \
"umulh x7, x4, %4 \n\t" \
"adds x5, x5, x6 \n\t" \
"adc x7, x7, xzr \n\t" \
"adds x5, x5, %0 \n\t" \
"adc %0, x7, xzr \n\t" \
"str x5, [%1], #8 \n\t"
#define MULADDC_STOP \
: "+r" (c), "+r" (d), "+r" (s) \
: "r" (b) \
: "x4", "x5", "x6", "x7", "cc" \
#define MULADDC_STOP \
: "+r" (c), "+r" (d), "+r" (s), "+m" (*(uint64_t (*)[16]) d) \
: "r" (b), "m" (*(const uint64_t (*)[16]) s) \
: "x4", "x5", "x6", "x7", "cc" \
);
#endif /* Aarch64 */