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// Copyright 2016 The Netstack Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
#include "textflag.h"
#define preparingG 1
// See commit_noasm.go for a description of commitSleep.
//
// func commitSleep(g uintptr, waitingG *uintptr) bool
TEXT ·commitSleep(SB),NOSPLIT,$0-24
MOVQ waitingG+8(FP), CX
MOVQ g+0(FP), DX
// Store the G in waitingG if it's still preparingG. If it's anything
// else it means a waker has aborted the sleep.
MOVQ $preparingG, AX
LOCK
CMPXCHGQ DX, 0(CX)
SETEQ AX
MOVB AX, ret+16(FP)
RET
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