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internal/sm2ec: try LSX

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Sun Yimin 2025-10-10 10:09:30 +08:00 committed by GitHub
parent 6f51177e03
commit 0244a3e137
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2 changed files with 71 additions and 14 deletions
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79
internal/sm2ec/p256_asm_loong64.s
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@ -6,21 +6,22 @@
#include "textflag.h" #include "textflag.h"
#define res_ptr R29 #define ZERO R0
#define x_ptr R30 #define res_ptr R4
#define y_ptr R31 #define x_ptr R5
#define y_ptr R6
#define acc0 R8 #define acc0 R7
#define acc1 R9 #define acc1 R8
#define acc2 R10 #define acc2 R9
#define acc3 R11 #define acc3 R10
#define acc4 R12 #define acc4 R11
#define acc5 R13 #define acc5 R12
#define t0 R14 #define t0 R13
#define t1 R15 #define t1 R14
#define t2 R16 #define t2 R15
#define t3 R17 #define t3 R16
#define t4 R18 #define t4 R17
DATA p256p<>+0x00(SB)/8, $0xffffffffffffffff DATA p256p<>+0x00(SB)/8, $0xffffffffffffffff
DATA p256p<>+0x08(SB)/8, $0xffffffff00000000 DATA p256p<>+0x08(SB)/8, $0xffffffff00000000
@ -83,6 +84,56 @@ TEXT ·p256MovCond(SB),NOSPLIT,$0
MOVV b+16(FP), y_ptr MOVV b+16(FP), y_ptr
MOVV cond+24(FP), t0 MOVV cond+24(FP), t0
MOVV ·supportLSX+0(SB), t1
BEQ t1, ZERO, basic_path
VMOVQ t0, V0.V2
VXORV V1, V1, V1
VSEQV V0, V1, V0
VMOVQ (16*0)(x_ptr), V1
VMOVQ (16*1)(x_ptr), V2
VMOVQ (16*2)(x_ptr), V3
VMOVQ (16*3)(x_ptr), V4
VMOVQ (16*4)(x_ptr), V5
VMOVQ (16*5)(x_ptr), V6
VANDVN V1, V0, V1
VANDVN V2, V0, V2
VANDVN V3, V0, V3
VANDVN V4, V0, V4
VANDVN V5, V0, V5
VANDVN V6, V0, V6
VMOVQ (16*0)(y_ptr), V7
VMOVQ (16*1)(y_ptr), V8
VMOVQ (16*2)(y_ptr), V9
VMOVQ (16*3)(y_ptr), V10
VMOVQ (16*4)(y_ptr), V11
VMOVQ (16*5)(y_ptr), V12
VANDV V7, V0, V7
VANDV V8, V0, V8
VANDV V9, V0, V9
VANDV V10, V0, V10
VANDV V11, V0, V11
VANDV V12, V0, V12
VORV V1, V7, V1
VORV V2, V8, V2
VORV V3, V9, V3
VORV V4, V10, V4
VORV V5, V11, V5
VORV V6, V12, V6
VMOVQ V1, (16*0)(res_ptr)
VMOVQ V2, (16*1)(res_ptr)
VMOVQ V3, (16*2)(res_ptr)
VMOVQ V4, (16*3)(res_ptr)
VMOVQ V5, (16*4)(res_ptr)
VMOVQ V6, (16*5)(res_ptr)
RET
basic_path:
// Load a.x // Load a.x
MOVV (8*0)(x_ptr), acc0 MOVV (8*0)(x_ptr), acc0
MOVV (8*1)(x_ptr), acc1 MOVV (8*1)(x_ptr), acc1

6
internal/sm2ec/sm2p256_asm_loong64.go
View File

@ -1,5 +1,9 @@
package sm2ec package sm2ec
import (
"github.com/emmansun/gmsm/internal/deps/cpu"
)
// p256Element is a P-256 base field element in [0, P-1] in the Montgomery // p256Element is a P-256 base field element in [0, P-1] in the Montgomery
// domain (with R 2²⁵⁶) as four limbs in little-endian order value. // domain (with R 2²⁵⁶) as four limbs in little-endian order value.
type p256Element [4]uint64 type p256Element [4]uint64
@ -10,6 +14,8 @@ type SM2P256Point1 struct {
x, y, z p256Element x, y, z p256Element
} }
var supportLSX = cpu.Loong64.HasLSX
//go:noescape //go:noescape
func p256BigToLittle(res *p256Element, in *[32]byte) func p256BigToLittle(res *p256Element, in *[32]byte)