Lynn Boger
fbbbdbdd6f
A previous fix to improve performance based on alignment to sha3 was made in both ppc64le and ppc64, when it should have only applied to ppc64le. This changes the build tags so it is only done for ppc64le. Fixes golang/go#15392 Change-Id: Idf32a0370f3c76fc2b54a2897a668acbae5d43c5 Reviewed-on: https://go-review.googlesource.com/22323 Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
59 lines
1.0 KiB
Go
59 lines
1.0 KiB
Go
// Copyright 2015 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 386 ppc64le
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// +build !appengine
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package sha3
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import "unsafe"
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func xorInUnaligned(d *state, buf []byte) {
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bw := (*[maxRate / 8]uint64)(unsafe.Pointer(&buf[0]))
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n := len(buf)
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if n >= 72 {
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d.a[0] ^= bw[0]
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d.a[1] ^= bw[1]
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d.a[2] ^= bw[2]
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d.a[3] ^= bw[3]
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d.a[4] ^= bw[4]
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d.a[5] ^= bw[5]
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d.a[6] ^= bw[6]
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d.a[7] ^= bw[7]
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d.a[8] ^= bw[8]
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}
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if n >= 104 {
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d.a[9] ^= bw[9]
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d.a[10] ^= bw[10]
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d.a[11] ^= bw[11]
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d.a[12] ^= bw[12]
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}
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if n >= 136 {
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d.a[13] ^= bw[13]
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d.a[14] ^= bw[14]
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d.a[15] ^= bw[15]
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d.a[16] ^= bw[16]
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}
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if n >= 144 {
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d.a[17] ^= bw[17]
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}
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if n >= 168 {
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d.a[18] ^= bw[18]
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d.a[19] ^= bw[19]
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d.a[20] ^= bw[20]
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}
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}
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func copyOutUnaligned(d *state, buf []byte) {
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ab := (*[maxRate]uint8)(unsafe.Pointer(&d.a[0]))
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copy(buf, ab[:])
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}
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var (
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xorIn = xorInUnaligned
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copyOut = copyOutUnaligned
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)
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const xorImplementationUnaligned = "unaligned"
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