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sys.cas for mutex

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R=rsc
APPROVED=rsc
DELTA=28  (28 added, 0 deleted, 0 changed)
OCL=31128
CL=31130
This commit is contained in:
Kai Backman 2009-07-02 22:05:06 -07:00
parent 84ef63b9d5
commit 84ded32817
1 changed files with 14 additions and 0 deletions
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14
src/pkg/sync/asm_arm.s Normal file
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// Copyright 2009 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.
// func cas(val *int32, old, new int32) bool
// Atomically:
// if *val == old {
// *val = new;
// return true;
// }else
// return false;
TEXT sync·cas+0(SB),0,$12
TODO