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go/src/pkg/runtime/atomic_amd64.c
Dmitriy Vyukov 4667571619 runtime: add 64-bit atomics
This is factored out part of:
https://golang.org/cl/5279048/
(Parallel GC)

R=golang-dev, rsc
CC=golang-dev
https://golang.org/cl/5985047
2012-04-05 18:47:43 +04:00

27 lines
449 B
C

// 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.
#include "runtime.h"
#pragma textflag 7
uint32
runtime·atomicload(uint32 volatile* addr)
{
return *addr;
}
#pragma textflag 7
uint64
runtime·atomicload64(uint64 volatile* addr)
{
return *addr;
}
#pragma textflag 7
void*
runtime·atomicloadp(void* volatile* addr)
{
return *addr;
}