osfmk/i386/machine_cpu.h

   1 /*
   2  * Copyright (c) 2000-2005 Apple Computer, Inc. All rights reserved.
   3  *
   4  * @APPLE_OSREFERENCE_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. The rights granted to you under the License
  10  * may not be used to create, or enable the creation or redistribution of,
  11  * unlawful or unlicensed copies of an Apple operating system, or to
  12  * circumvent, violate, or enable the circumvention or violation of, any
  13  * terms of an Apple operating system software license agreement.
  14  *
  15  * Please obtain a copy of the License at
  16  * http://www.opensource.apple.com/apsl/ and read it before using this file.
  17  *
  18  * The Original Code and all software distributed under the License are
  19  * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
  20  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
  21  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
  22  * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
  23  * Please see the License for the specific language governing rights and
  24  * limitations under the License.
  25  *
  26  * @APPLE_OSREFERENCE_LICENSE_HEADER_END@
  27  */
  28 #ifndef _I386_MACHINE_CPU_H_
  29 #define _I386_MACHINE_CPU_H_
  30
  31 #include <mach/mach_types.h>
  32 #include <mach/boolean.h>
  33 #include <kern/kern_types.h>
  34 #include <pexpert/pexpert.h>
  35 #include <sys/cdefs.h>
  36
  37 __BEGIN_DECLS
  38 void    cpu_machine_init(
  39         void);
  40
  41 void    handle_pending_TLB_flushes(
  42         void);
  43
  44 int cpu_signal_handler(x86_saved_state_t *regs);
  45
  46 kern_return_t cpu_register(
  47         int *slot_nump);
  48 __END_DECLS
  49
  50 static inline void cpu_halt(void)
  51 {
  52         asm volatile( "wbinvd; cli; hlt" );
  53 }
  54
  55 static inline void cpu_pause(void)
  56 {
  57         asm volatile( "rep; nop" );
  58 }
  59
  60 #endif /* _I386_MACHINE_CPU_H_ */