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https://github.com/emmansun/gmsm.git
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97 lines
2.3 KiB
ArmAsm
97 lines
2.3 KiB
ArmAsm
// Copyright 2023 The Go Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file.
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//go:build !purego
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#include "textflag.h"
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// func addMulVVW256(z, x *uint, y uint) (c uint)
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TEXT ·addMulVVW256(SB),$0-32
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MOV $4, X30
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JMP addMulVVWy(SB)
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// func addMulVVW1024(z, x *uint, y uint) (c uint)
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TEXT ·addMulVVW1024(SB),$0-32
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MOV $16, X30
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JMP addMulVVWy(SB)
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// func addMulVVW1536(z, x *uint, y uint) (c uint)
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TEXT ·addMulVVW1536(SB),$0-32
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MOV $24, X30
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JMP addMulVVWy(SB)
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// func addMulVVW2048(z, x *uint, y uint) (c uint)
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TEXT ·addMulVVW2048(SB),$0-32
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MOV $32, X30
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JMP addMulVVWy(SB)
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TEXT addMulVVWy(SB),NOFRAME|NOSPLIT,$0
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MOV z+0(FP), X5
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MOV x+8(FP), X7
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MOV y+16(FP), X6
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MOV $0, X29
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BEQZ X30, done
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loop:
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MOV 0*8(X5), X10 // z[0]
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MOV 1*8(X5), X13 // z[1]
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MOV 2*8(X5), X16 // z[2]
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MOV 3*8(X5), X19 // z[3]
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MOV 0*8(X7), X8 // x[0]
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MOV 1*8(X7), X11 // x[1]
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MOV 2*8(X7), X14 // x[2]
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MOV 3*8(X7), X17 // x[3]
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MULHU X8, X6, X9 // z_hi[0] = x[0] * y
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MUL X8, X6, X8 // z_lo[0] = x[0] * y
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ADD X8, X10, X21 // z_lo[0] = x[0] * y + z[0]
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SLTU X8, X21, X22
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ADD X9, X22, X9 // z_hi[0] = x[0] * y + z[0]
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ADD X21, X29, X10 // z_lo[0] = x[0] * y + z[0] + c
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SLTU X21, X10, X22
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ADD X9, X22, X29 // next c
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MULHU X11, X6, X12 // z_hi[1] = x[1] * y
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MUL X11, X6, X11 // z_lo[1] = x[1] * y
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ADD X11, X13, X21 // z_lo[1] = x[1] * y + z[1]
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SLTU X11, X21, X22
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ADD X12, X22, X12 // z_hi[1] = x[1] * y + z[1]
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ADD X21, X29, X13 // z_lo[1] = x[1] * y + z[1] + c
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SLTU X21, X13, X22
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ADD X12, X22, X29 // next c
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MULHU X14, X6, X15 // z_hi[2] = x[2] * y
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MUL X14, X6, X14 // z_lo[2] = x[2] * y
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ADD X14, X16, X21 // z_lo[2] = x[2] * y + z[2]
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SLTU X14, X21, X22
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ADD X15, X22, X15 // z_hi[2] = x[2] * y + z[2]
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ADD X21, X29, X16 // z_lo[2] = x[2] * y + z[2] + c
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SLTU X21, X16, X22
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ADD X15, X22, X29 // next c
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MULHU X17, X6, X18 // z_hi[3] = x[3] * y
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MUL X17, X6, X17 // z_lo[3] = x[3] * y
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ADD X17, X19, X21 // z_lo[3] = x[3] * y + z[3]
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SLTU X17, X21, X22
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ADD X18, X22, X18 // z_hi[3] = x[3] * y + z[3]
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ADD X21, X29, X19 // z_lo[3] = x[3] * y + z[3] + c
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SLTU X21, X19, X22
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ADD X18, X22, X29 // next c
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MOV X10, 0*8(X5) // z[0]
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MOV X13, 1*8(X5) // z[1]
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MOV X16, 2*8(X5) // z[2]
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MOV X19, 3*8(X5) // z[3]
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ADDI $32, X5
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ADDI $32, X7
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ADDI $-4, X30
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BNEZ X30, loop
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done:
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MOV X29, c+24(FP)
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RET
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