osfmk/i386/machine_cpu.h

   1 /*
   2  * Copyright (c) 2000-2005 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 #ifndef _I386_MACHINE_CPU_H_
  23 #define _I386_MACHINE_CPU_H_
  24
  25 #include <mach/mach_types.h>
  26 #include <mach/boolean.h>
  27 #include <kern/kern_types.h>
  28 #include <pexpert/pexpert.h>
  29 #include <sys/cdefs.h>
  30
  31 __BEGIN_DECLS
  32 void    cpu_machine_init(
  33         void);
  34
  35 void    cpu_signal_handler(
  36         x86_saved_state_t *regs);
  37
  38 void    handle_pending_TLB_flushes(
  39         void);
  40
  41
  42 kern_return_t cpu_register(
  43         int *slot_nump);
  44 __END_DECLS
  45
  46 static inline void cpu_halt(void)
  47 {
  48         asm volatile( "wbinvd; cli; hlt" );
  49 }
  50
  51 static inline void cpu_pause(void)
  52 {
  53         asm volatile( "rep; nop" );
  54 }
  55
  56 #endif /* _I386_MACHINE_CPU_H_ */