xnu-792.6.22.tar.gz

[apple/xnu.git] / osfmk / ppc / cpu_data.h

/*
 * Copyright (c) 2000-2004 Apple Computer, Inc. All rights reserved.
 *
 * @APPLE_LICENSE_HEADER_START@
 * 
 * The contents of this file constitute Original Code as defined in and
 * are subject to the Apple Public Source License Version 1.1 (the
 * "License").  You may not use this file except in compliance with the
 * License.  Please obtain a copy of the License at
 * http://www.apple.com/publicsource and read it before using this file.
 * 
 * This Original Code and all software distributed under the License are
 * distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, EITHER
 * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
 * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT.  Please see the
 * License for the specific language governing rights and limitations
 * under the License.
 * 
 * @APPLE_LICENSE_HEADER_END@
 */
/*
 * @OSF_COPYRIGHT@
 * 
 */

#ifndef	PPC_CPU_DATA
#define PPC_CPU_DATA

#ifdef	MACH_KERNEL_PRIVATE

#include <mach/mach_types.h>
#include <machine/thread.h>

extern thread_t current_thread(void);
extern __inline__ thread_t current_thread(void) 
{
	thread_t	result;

	__asm__ volatile("mfsprg %0,1" : "=r" (result));

	return (result);
}

#define	getPerProc()		current_thread()->machine.PerProc

extern int 					get_preemption_level(void);
extern void 					_enable_preemption_no_check(void);

#define enable_preemption_no_check()		_enable_preemption_no_check()
#define mp_disable_preemption()			_disable_preemption()
#define mp_enable_preemption()			_enable_preemption()
#define mp_enable_preemption_no_check()		_enable_preemption_no_check()

#endif	/* MACH_KERNEL_PRIVATE */

#endif	/* PPC_CPU_DATA */