osfmk/ppc/cpu_data.h

   1 /*
   2  * Copyright (c) 2000-2004 Apple Computer, Inc. All rights reserved.
   3  *
   4  * @APPLE_LICENSE_HEADER_START@
   5  *
   6  * The contents of this file constitute Original Code as defined in and
   7  * are subject to the Apple Public Source License Version 1.1 (the
   8  * "License").  You may not use this file except in compliance with the
   9  * License.  Please obtain a copy of the License at
  10  * http://www.apple.com/publicsource and read it before using this file.
  11  *
  12  * This Original Code and all software distributed under the License are
  13  * distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, EITHER
  14  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
  15  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
  16  * FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT.  Please see the
  17  * License for the specific language governing rights and limitations
  18  * under the License.
  19  *
  20  * @APPLE_LICENSE_HEADER_END@
  21  */
  22 /*
  23  * @OSF_COPYRIGHT@
  24  *
  25  */
  26
  27 #ifndef PPC_CPU_DATA
  28 #define PPC_CPU_DATA
  29
  30 #ifdef  MACH_KERNEL_PRIVATE
  31
  32 #include <mach/mach_types.h>
  33 #include <machine/thread.h>
  34
  35 extern thread_t current_thread(void);
  36 extern __inline__ thread_t current_thread(void)
  37 {
  38         thread_t        result;
  39
  40         __asm__ volatile("mfsprg %0,1" : "=r" (result));
  41
  42         return (result);
  43 }
  44
  45 #define getPerProc()            current_thread()->machine.PerProc
  46
  47 extern int                                      get_preemption_level(void);
  48 extern void                                     _enable_preemption_no_check(void);
  49
  50 #define enable_preemption_no_check()            _enable_preemption_no_check()
  51 #define mp_disable_preemption()                 _disable_preemption()
  52 #define mp_enable_preemption()                  _enable_preemption()
  53 #define mp_enable_preemption_no_check()         _enable_preemption_no_check()
  54
  55 #endif  /* MACH_KERNEL_PRIVATE */
  56
  57 #endif  /* PPC_CPU_DATA */