diff options
Diffstat (limited to 'crypto/ec/asm/ecp_nistz256-armv8.pl')
| -rw-r--r-- | crypto/ec/asm/ecp_nistz256-armv8.pl | 12 |
1 files changed, 6 insertions, 6 deletions
diff --git a/crypto/ec/asm/ecp_nistz256-armv8.pl b/crypto/ec/asm/ecp_nistz256-armv8.pl index c5c1280755..13625861e8 100644 --- a/crypto/ec/asm/ecp_nistz256-armv8.pl +++ b/crypto/ec/asm/ecp_nistz256-armv8.pl @@ -583,14 +583,14 @@ __ecp_nistz256_add: adds $t0,$acc0,#1 // subs $t0,$a0,#-1 // tmp = ret-modulus sbcs $t1,$acc1,$poly1 sbcs $t2,$acc2,xzr - sbc $t3,$acc3,$poly3 - cmp $ap,xzr // did addition carry? + sbcs $t3,$acc3,$poly3 + sbcs xzr,$ap,xzr // did subtraction borrow? - csel $acc0,$acc0,$t0,eq // ret = carry ? ret-modulus : ret - csel $acc1,$acc1,$t1,eq - csel $acc2,$acc2,$t2,eq + csel $acc0,$acc0,$t0,lo // ret = borrow ? ret : ret-modulus + csel $acc1,$acc1,$t1,lo + csel $acc2,$acc2,$t2,lo stp $acc0,$acc1,[$rp] - csel $acc3,$acc3,$t3,eq + csel $acc3,$acc3,$t3,lo stp $acc2,$acc3,[$rp,#16] ret |