1 // Copyright 2009 The Go Authors. All rights reserved.
2 // Use of this source code is governed by a BSD-style
3 // license that can be found in the LICENSE file.
4
5 //go:build !purego
6
7 #include "textflag.h"
8
9 // func addMulVVW1024(z, x *uint, y uint) (c uint)
10 TEXT ·addMulVVW1024(SB), $0-16
11 MOVL $32, BX
12 JMP addMulVVWx(SB)
13
14 // func addMulVVW1536(z, x *uint, y uint) (c uint)
15 TEXT ·addMulVVW1536(SB), $0-16
16 MOVL $48, BX
17 JMP addMulVVWx(SB)
18
19 // func addMulVVW2048(z, x *uint, y uint) (c uint)
20 TEXT ·addMulVVW2048(SB), $0-16
21 MOVL $64, BX
22 JMP addMulVVWx(SB)
23
24 TEXT addMulVVWx(SB), NOFRAME|NOSPLIT, $0
25 MOVL z+0(FP), DI
26 MOVL x+4(FP), SI
27 MOVL y+8(FP), BP
28 LEAL (DI)(BX*4), DI
29 LEAL (SI)(BX*4), SI
30 NEGL BX // i = -n
31 MOVL $0, CX // c = 0
32 JMP E6
33
34 L6: MOVL (SI)(BX*4), AX
35 MULL BP
36 ADDL CX, AX
37 ADCL $0, DX
38 ADDL AX, (DI)(BX*4)
39 ADCL $0, DX
40 MOVL DX, CX
41 ADDL $1, BX // i++
42
43 E6: CMPL BX, $0 // i < 0
44 JL L6
45
46 MOVL CX, c+12(FP)
47 RET
48
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