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internal/sm2ec: ppc64le, p256PointAddAsm reduce memory acesss

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Sun Yimin 2024-09-03 08:23:21 +08:00 committed by GitHub
parent 235382a457
commit dfcafd31b3
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2 changed files with 9 additions and 21 deletions
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28
internal/sm2ec/p256_asm_ppc64le.s
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@ -1261,7 +1261,7 @@ TEXT ·p256OrdReduce(SB),NOSPLIT,$0
// ---------------------------------------
// sm2p256MulInternal
// V0-V3 V30,V31 - Not Modified
// V4-V15 V27-V29 - Volatile
// V4-V15 V28-V29 - Volatile
#define CPOOL R7
@ -1282,7 +1282,7 @@ TEXT ·p256OrdReduce(SB),NOSPLIT,$0
#define ADD3 V9 // Overloaded with SEL2,SEL5
#define ADD4 V10 // Overloaded with SEL3,SEL6
#define RED1 V11 // Overloaded with CAR2
#define RED2 V12
#define RED2 V12 // Overloaded with TMP2
#define RED3 V13 // Overloaded with SEL1
#define T2 V14
// Overloaded temporaries
@ -1304,7 +1304,7 @@ TEXT ·p256OrdReduce(SB),NOSPLIT,$0
// TMP1, TMP2 used in
// VMULT macros
#define TMP1 V13 // Overloaded with RED3
#define TMP2 V27
#define TMP2 V12 // Overloaded with RED2
#define ONE V29 // 1s splatted by word
TEXT sm2p256MulInternal<>(SB), NOSPLIT, $0-16
@ -2508,7 +2508,7 @@ TEXT ·p256PointDouble6TimesAsm(SB), NOSPLIT, $0-16
// SUB(T<U1-T); Y3:=T // Y3 = Y3-T2 << store-out Y3 result reg
*/
// p256PointAddAsm(res, in1, in2 *p256Point)
TEXT ·p256PointAddAsm(SB), NOSPLIT, $16-32
TEXT ·p256PointAddAsm(SB), NOSPLIT, $0
MOVD res+0(FP), P3ptr
MOVD in1+8(FP), P1ptr
MOVD $p256mul<>+0x00(SB), CPOOL
@ -2537,8 +2537,6 @@ TEXT ·p256PointAddAsm(SB), NOSPLIT, $16-32
VOR T0, T0, RL // SAVE: RL
VOR T1, T1, RH // SAVE: RH
STXVD2X RH, (R1)(R17) // V27 has to be saved
// X=X2; Y- ; MUL; H=T // H = X2*T1
MOVD in2+16(FP), P2ptr
LXVD2X (R0)(P2ptr), X0 // X2L
@ -2643,15 +2641,12 @@ TEXT ·p256PointAddAsm(SB), NOSPLIT, $16-32
XXPERMDI X1, X1, $2, X1
VOR RL, RL, Y0
// VOR RH, RH, Y1 RH was saved above in D2X format
LXVD2X (R1)(R17), Y1
VOR RH, RH, Y1
CALL sm2p256MulInternal<>(SB)
// SUB(R<T-S1) // R = T-S1
p256SubInternal(RH,RL,T1,T0,S1H,S1L)
STXVD2X RH, (R1)(R17) // Save RH
// if R == 0 or R^P == 0 then ret=ret else ret=0
// clobbers T1H and T1L
// Redo this using ISEL??
@ -2697,15 +2692,9 @@ TEXT ·p256PointAddAsm(SB), NOSPLIT, $16-32
// X=R ; Y=R ; MUL; T- // X3 = R*R
VOR RL, RL, X0
// VOR RH, RH, X1
VOR RL, RL, Y0
// RH was saved above using STXVD2X
LXVD2X (R1)(R17), X1
VOR X1, X1, Y1
// VOR RH, RH, Y1
VOR RH, RH, X1
VOR RH, RH, Y1
CALL sm2p256MulInternal<>(SB)
// SUB(T<T-T2) // X3 = X3-T2
@ -2728,8 +2717,7 @@ TEXT ·p256PointAddAsm(SB), NOSPLIT, $16-32
// X=R ; Y- ; MUL; U1=T // Y3 = R*Y3
VOR RL, RL, X0
// VOR RH, RH, X1
LXVD2X (R1)(R17), X1
VOR RH, RH, X1
CALL sm2p256MulInternal<>(SB)
VOR T0, T0, U1L
VOR T1, T1, U1H

2
internal/sm2ec/p256_asm_s390x.s
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@ -984,7 +984,7 @@ loop:
// ---------------------------------------
// sm2p256MulInternal
// V0-V3,V30,V31 - Not Modified
// V4-V15 - Volatile
// V4-V14 - Volatile
#define CPOOL R4