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62 lines
1.3 KiB
62 lines
1.3 KiB
7 years ago
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// Copyright 2017 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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// +build amd64,!gccgo,!appengine
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package argon2
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func init() {
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useSSE4 = supportsSSE4()
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}
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//go:noescape
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func supportsSSE4() bool
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//go:noescape
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func mixBlocksSSE2(out, a, b, c *block)
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//go:noescape
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func xorBlocksSSE2(out, a, b, c *block)
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//go:noescape
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func blamkaSSE4(b *block)
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func processBlockSSE(out, in1, in2 *block, xor bool) {
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var t block
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mixBlocksSSE2(&t, in1, in2, &t)
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if useSSE4 {
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blamkaSSE4(&t)
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} else {
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for i := 0; i < blockLength; i += 16 {
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blamkaGeneric(
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&t[i+0], &t[i+1], &t[i+2], &t[i+3],
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&t[i+4], &t[i+5], &t[i+6], &t[i+7],
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&t[i+8], &t[i+9], &t[i+10], &t[i+11],
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&t[i+12], &t[i+13], &t[i+14], &t[i+15],
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)
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}
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for i := 0; i < blockLength/8; i += 2 {
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blamkaGeneric(
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&t[i], &t[i+1], &t[16+i], &t[16+i+1],
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&t[32+i], &t[32+i+1], &t[48+i], &t[48+i+1],
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&t[64+i], &t[64+i+1], &t[80+i], &t[80+i+1],
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&t[96+i], &t[96+i+1], &t[112+i], &t[112+i+1],
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)
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}
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}
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if xor {
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xorBlocksSSE2(out, in1, in2, &t)
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} else {
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mixBlocksSSE2(out, in1, in2, &t)
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}
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}
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func processBlock(out, in1, in2 *block) {
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processBlockSSE(out, in1, in2, false)
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}
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func processBlockXOR(out, in1, in2 *block) {
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processBlockSSE(out, in1, in2, true)
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}
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