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Viewing changes to src/pkg/runtime/memmove_nacl_amd64p32.s

  • Committer: Package Import Robot
  • Author(s): Serge Hallyn
  • Date: 2014-11-18 15:12:26 UTC
  • mfrom: (14.2.12 vivid-proposed)
  • Revision ID: package-import@ubuntu.com-20141118151226-zug7vn93mn3dtiz3
Tags: 2:1.3.2-1ubuntu1
* Merge from Debian unstable.  Remaining changes:
  - 016-armhf-elf-header.patch: Use correct ELF header for armhf binaries.
  - Support co-installability with gccgo-go tool:
    - d/rules,golang-go.install: Rename bin/go -> bin/golang-go
    - d/golang-go.{postinst,prerm}: Install/remove /usr/bin/go using
      alternatives.
  - d/copyright: Amendments for full compiliance with copyright format.
  - d/control: Demote golang-go.tools to Suggests to support Ubuntu MIR.
  - dropped patches (now upstream):
    - d/p/issue27650045_40001_50001.diff
    - d/p/issue28050043_60001_70001.diff
    - d/p/issue54790044_100001_110001.diff

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Lines of Context:
src/pkg/runtime/memmove_nacl_amd64p32.s
 
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// Copyright 2013 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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#include "../../cmd/ld/textflag.h"
 
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TEXT runtime·memmove(SB), NOSPLIT, $0-12
 
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        MOVL    to+0(FP), DI
 
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        MOVL    fr+4(FP), SI
 
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        MOVL    n+8(FP), BX
 
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        CMPL    SI, DI
 
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        JLS back
 
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forward:
 
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        MOVL    BX, CX
 
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        SHRL    $3, CX
 
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        ANDL    $7, BX
 
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        REP; MOVSQ
 
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        MOVL    BX, CX
 
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        REP; MOVSB
 
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        RET
 
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back:
 
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        MOVL    SI, CX
 
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        ADDL    BX, CX
 
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        CMPL    CX, DI
 
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        JLS forward
 
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        ADDL    BX, DI
 
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        ADDL    BX, SI
 
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        STD
 
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        MOVL    BX, CX
 
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        SHRL    $3, CX
 
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        ANDL    $7, BX
 
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        SUBL    $8, DI
 
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        SUBL    $8, SI
 
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        REP; MOVSQ
 
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        ADDL    $7, DI
 
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        ADDL    $7, SI
 
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        MOVL    BX, CX
 
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        REP; MOVSB
 
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        CLD
 
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        RET