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internal/sm2ec: fix s390x p256FromMont

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Sun Yimin 2024-08-23 16:01:41 +08:00 committed by GitHub
parent bf891d841e
commit 495f8ae7a4
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2 changed files with 7 additions and 7 deletions
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5
internal/sm2ec/p256_asm_s390x.s
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@ -328,7 +328,6 @@ loop_select:
#define ZER V6
#define SEL1 V7
#define SEL2 V8
#define CAR1 V9
#define CAR2 V10
#define RED1 V11
@ -345,8 +344,7 @@ TEXT ·p256FromMont(SB), NOSPLIT, $0
MOVD $p256<>+0x00(SB), CPOOL
VL 16(CPOOL), PL
VL 0(CPOOL), PH
VL 48(CPOOL), SEL2
VL 64(CPOOL), SEL1
VL 48(CPOOL), SEL1
VL (0*16)(x_ptr), T0
VPDI $0x4, T0, T0, T0
@ -449,7 +447,6 @@ TEXT ·p256FromMont(SB), NOSPLIT, $0
#undef TT1
#undef ZER
#undef SEL1
#undef SEL2
#undef CAR1
#undef CAR2
#undef RED1

9
internal/sm2ec/sm2p256_asm_s390x_test.go
View File

@ -66,7 +66,7 @@ func testP256OrderReduce(v, expected *big.Int, t *testing.T) {
fromBig((*[4]uint64)(val), v)
p256OrdReduce(val)
if ordElmToBigInt(val).Cmp(expected) != 0 {
t.Errorf("p256OrdReduce failed for %x", v.Bytes())
t.Errorf("p256OrdReduce failed for %x, expected %x", v.Bytes(), expected.Bytes())
}
}
@ -75,9 +75,12 @@ func TestP256OrderReduce(t *testing.T) {
for i := 0; i < 20; i++ {
bigVal := big.NewInt(int64(i))
testP256OrderReduce(bigVal, bigVal, t)
bigVal = new(big.Int).Sub(p, big.NewInt(int64(i)))
testP256OrderReduce(bigVal, bigVal, t)
bigVal = new(big.Int).Add(p, big.NewInt(int64(i)))
testP256OrderReduce(bigVal, big.NewInt(int64(i)), t)
}
testP256OrderReduce(p, big.NewInt(0), t)
for i := 1; i < 20; i++ {
bigVal := new(big.Int).Sub(p, big.NewInt(int64(i)))
testP256OrderReduce(bigVal, bigVal, t)
}
}