Initial commit of OpenSPARC T2 architecture model.

[OpenSPARC-T2-SAM] / sam-t2 / sam / cpus / vonk / bl / lib / utl / src / BL_Atomic.h

/*
* ========== Copyright Header Begin ==========================================
* 
* OpenSPARC T2 Processor File: BL_Atomic.h
* Copyright (c) 2006 Sun Microsystems, Inc.  All Rights Reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES.
* 
* The above named program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public
* License version 2 as published by the Free Software Foundation.
* 
* The above named program is distributed in the hope that it will be 
* useful, but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
* General Public License for more details.
* 
* You should have received a copy of the GNU General Public
* License along with this work; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA.
* 
* ========== Copyright Header End ============================================
*/

#ifndef __BL_Atomic_h__
#define __BL_Atomic_h__

#include <sys/types.h>

// bl_atomic_add64() and bl_atomic_add32() implement non-blocking
// atomic add operations for 64bit and 32bit variables respectively.
// The routines return the previous value of *var as result.
 
extern "C" int64_t bl_atomic_add64( int64_t* var, int64_t val );
extern "C" int32_t bl_atomic_add32( int32_t* var, int32_t val );

#endif