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  * This file contains Original Code and/or Modifications of Original Code
   7  * as defined in and that are subject to the Apple Public Source License
   8  * Version 2.0 (the 'License'). You may not use this file except in
   9  * compliance with the License. Please obtain a copy of the License at
  10  * http://www.opensource.apple.com/apsl/ and read it before using this
  11  * file.
  12  *
  13  * The Original Code and all software distributed under the License are
  14  * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
  15  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
  16  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
  17  * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
  18  * Please see the License for the specific language governing rights and
  19  * limitations under the License.
  20  *
  21  * @APPLE_LICENSE_HEADER_END@
  22  */
  23 /*
  24  * @OSF_COPYRIGHT@
  25  *
  26  */
  27
  28 #ifndef PPC_CPU_DATA
  29 #define PPC_CPU_DATA
  30
  31 #ifdef  MACH_KERNEL_PRIVATE
  32
  33 #include <mach/mach_types.h>
  34 #include <machine/thread.h>
  35
  36 extern thread_t current_thread(void);
  37 extern __inline__ thread_t current_thread(void)
  38 {
  39         thread_t        result;
  40
  41         __asm__ volatile("mfsprg %0,1" : "=r" (result));
  42
  43         return (result);
  44 }
  45
  46 #define getPerProc()            current_thread()->machine.PerProc
  47
  48 extern int                                      get_preemption_level(void);
  49 extern void                                     _enable_preemption_no_check(void);
  50
  51 #define enable_preemption_no_check()            _enable_preemption_no_check()
  52 #define mp_disable_preemption()                 _disable_preemption()
  53 #define mp_enable_preemption()                  _enable_preemption()
  54 #define mp_enable_preemption_no_check()         _enable_preemption_no_check()
  55
  56 #endif  /* MACH_KERNEL_PRIVATE */
  57
  58 #endif  /* PPC_CPU_DATA */