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5fea2ccc77
The tree's pretty inconsistent about single space vs double space after a period in documentation. Make it consistently a single space, per earlier decisions. This means contributors won't be confused by misleading precedence. This CL doesn't use go/doc to parse. It only addresses // comments. It was generated with: $ perl -i -npe 's,^(\s*// .+[a-z]\.) +([A-Z]),$1 $2,' $(git grep -l -E '^\s*//(.+\.) +([A-Z])') $ go test go/doc -update Change-Id: Iccdb99c37c797ef1f804a94b22ba5ee4b500c4f7 Reviewed-on: https://go-review.googlesource.com/20022 Reviewed-by: Rob Pike <r@golang.org> Reviewed-by: Dave Day <djd@golang.org> Run-TryBot: Brad Fitzpatrick <bradfitz@golang.org> TryBot-Result: Gobot Gobot <gobot@golang.org>
88 lines
2.4 KiB
ArmAsm
88 lines
2.4 KiB
ArmAsm
// Inferno's libkern/memset-arm.s
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// http://code.google.com/p/inferno-os/source/browse/libkern/memset-arm.s
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//
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// Copyright © 1994-1999 Lucent Technologies Inc. All rights reserved.
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// Revisions Copyright © 2000-2007 Vita Nuova Holdings Limited (www.vitanuova.com). All rights reserved.
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// Portions Copyright 2009 The Go Authors. All rights reserved.
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//
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// Permission is hereby granted, free of charge, to any person obtaining a copy
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// of this software and associated documentation files (the "Software"), to deal
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// in the Software without restriction, including without limitation the rights
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// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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// copies of the Software, and to permit persons to whom the Software is
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// furnished to do so, subject to the following conditions:
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//
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// The above copyright notice and this permission notice shall be included in
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// all copies or substantial portions of the Software.
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//
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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// THE SOFTWARE.
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#include "textflag.h"
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#define TO R8
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#define TOE R11
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#define N R12
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#define TMP R12 /* N and TMP don't overlap */
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TEXT runtime·memclr(SB),NOSPLIT,$0-8
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MOVW ptr+0(FP), TO
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MOVW n+4(FP), N
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MOVW $0, R0
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ADD N, TO, TOE /* to end pointer */
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CMP $4, N /* need at least 4 bytes to copy */
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BLT _1tail
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_4align: /* align on 4 */
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AND.S $3, TO, TMP
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BEQ _4aligned
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MOVBU.P R0, 1(TO) /* implicit write back */
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B _4align
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_4aligned:
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SUB $31, TOE, TMP /* do 32-byte chunks if possible */
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CMP TMP, TO
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BHS _4tail
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MOVW R0, R1 /* replicate */
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MOVW R0, R2
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MOVW R0, R3
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MOVW R0, R4
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MOVW R0, R5
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MOVW R0, R6
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MOVW R0, R7
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_f32loop:
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CMP TMP, TO
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BHS _4tail
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MOVM.IA.W [R0-R7], (TO)
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B _f32loop
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_4tail:
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SUB $3, TOE, TMP /* do remaining words if possible */
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_4loop:
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CMP TMP, TO
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BHS _1tail
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MOVW.P R0, 4(TO) /* implicit write back */
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B _4loop
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_1tail:
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CMP TO, TOE
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BEQ _return
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MOVBU.P R0, 1(TO) /* implicit write back */
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B _1tail
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_return:
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RET
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