aboutsummaryrefslogtreecommitdiffstats
path: root/vendor/golang.org/x/crypto/curve25519/cswap_amd64.s
blob: cd793a5b5f2eb00a97e3a9374c03a5f71c879e19 (plain) (blame)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
// Copyright 2012 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.

// +build amd64,!gccgo,!appengine

// func cswap(inout *[4][5]uint64, v uint64)
TEXT ·cswap(SB),7,$0
    MOVQ inout+0(FP),DI
    MOVQ v+8(FP),SI

    SUBQ $1, SI
    NOTQ SI
    MOVQ SI, X15
    PSHUFD $0x44, X15, X15

    MOVOU 0(DI), X0
    MOVOU 16(DI), X2
    MOVOU 32(DI), X4
    MOVOU 48(DI), X6
    MOVOU 64(DI), X8
    MOVOU 80(DI), X1
    MOVOU 96(DI), X3
    MOVOU 112(DI), X5
    MOVOU 128(DI), X7
    MOVOU 144(DI), X9

    MOVO X1, X10
    MOVO X3, X11
    MOVO X5, X12
    MOVO X7, X13
    MOVO X9, X14

    PXOR X0, X10
    PXOR X2, X11
    PXOR X4, X12
    PXOR X6, X13
    PXOR X8, X14
    PAND X15, X10
    PAND X15, X11
    PAND X15, X12
    PAND X15, X13
    PAND X15, X14
    PXOR X10, X0
    PXOR X10, X1
    PXOR X11, X2
    PXOR X11, X3
    PXOR X12, X4
    PXOR X12, X5
    PXOR X13, X6
    PXOR X13, X7
    PXOR X14, X8
    PXOR X14, X9

    MOVOU X0, 0(DI)
    MOVOU X2, 16(DI)
    MOVOU X4, 32(DI)
    MOVOU X6, 48(DI)
    MOVOU X8, 64(DI)
    MOVOU X1, 80(DI)
    MOVOU X3, 96(DI)
    MOVOU X5, 112(DI)
    MOVOU X7, 128(DI)
    MOVOU X9, 144(DI)
    RET