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internal/sm2ec: ppc64le, redefine K0 constant

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Sun Yimin 2024-08-30 16:21:03 +08:00 committed by GitHub
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commit fdf83a1ee8
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1 changed files with 7 additions and 12 deletions
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internal/sm2ec/p256_asm_ppc64le.s
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@ -39,12 +39,12 @@
// The following constants are defined in an order
// that is correct for use with LXVD2X/STXVD2X
// on little endian.
DATA p256ordK0<>+0x00(SB)/8, $0x7235097572350975
DATA p256ordK0<>+0x08(SB)/8, $0x7235097572350975
DATA p256ord<>+0x00(SB)/8, $0xfffffffeffffffff
DATA p256ord<>+0x08(SB)/8, $0xffffffffffffffff
DATA p256ord<>+0x10(SB)/8, $0x7203df6b21c6052b
DATA p256ord<>+0x18(SB)/8, $0x53bbf40939d54123
DATA p256ord<>+0x20(SB)/8, $0x7235097572350975 // p256ord K0
DATA p256ord<>+0x28(SB)/8, $0x7235097572350975 // p256ord K0
DATA p256<>+0x00(SB)/8, $0xfffffffeffffffff // P256
DATA p256<>+0x08(SB)/8, $0xffffffffffffffff // P256
DATA p256<>+0x10(SB)/8, $0xffffffff00000000 // P256
@ -65,8 +65,7 @@ DATA p256mul<>+0x50(SB)/8, $0x0000000100000000 // (1*2^256)%P256
DATA p256mul<>+0x58(SB)/8, $0x0000000000000000 // (1*2^256)%P256
// External declarations for constants
GLOBL p256ordK0<>(SB), 8, $16
GLOBL p256ord<>(SB), 8, $32
GLOBL p256ord<>(SB), 8, $48
GLOBL p256<>(SB), 8, $48
GLOBL p256mul<>(SB), 8, $96
@ -955,6 +954,7 @@ TEXT ·p256OrdMul(SB), NOSPLIT, $0-24
MOVD in1+8(FP), x_ptr
MOVD in2+16(FP), y_ptr
MOVD $16, R16
MOVD $32, R17
LXVD2X (R0)(x_ptr), X0
LXVD2X (R16)(x_ptr), X1
@ -971,10 +971,7 @@ TEXT ·p256OrdMul(SB), NOSPLIT, $0-24
MOVD $p256ord<>+0x00(SB), CPOOL
LXVD2X (R16)(CPOOL), M0
LXVD2X (R0)(CPOOL), M1
// Can use VSPLTISW $0x72350975, K0 instead
MOVD $p256ordK0<>+0x00(SB), CPOOL
LXVD2X (R0)(CPOOL), K0
LXVD2X (R17)(CPOOL), K0 // Can use VSPLTISW $0x72350975, K0 instead
CALL sm2p256OrdMulInternal<>(SB)
@ -991,6 +988,7 @@ TEXT ·p256OrdSqr(SB), NOSPLIT, $0-24
MOVD in+8(FP), x_ptr
MOVD n+16(FP), N
MOVD $16, R16
MOVD $32, R17
LXVD2X (R0)(x_ptr), X0
LXVD2X (R16)(x_ptr), X1
@ -1001,10 +999,7 @@ TEXT ·p256OrdSqr(SB), NOSPLIT, $0-24
MOVD $p256ord<>+0x00(SB), CPOOL
LXVD2X (R16)(CPOOL), M0
LXVD2X (R0)(CPOOL), M1
// Can use VSPLTISW $0x72350975, K0 instead
MOVD $p256ordK0<>+0x00(SB), CPOOL
LXVD2X (R0)(CPOOL), K0
LXVD2X (R17)(CPOOL), K0 // Can use VSPLTISW $0x72350975, K0 instead
sqrOrdLoop:
// Sqr uses same value for both