usr/src/uts/intel/asm/mmu.h

   1 /*
   2  * CDDL HEADER START
   3  *
   4  * The contents of this file are subject to the terms of the
   5  * Common Development and Distribution License (the "License").
   6  * You may not use this file except in compliance with the License.
   7  *
   8  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
   9  * or http://www.opensolaris.org/os/licensing.
  10  * See the License for the specific language governing permissions
  11  * and limitations under the License.
  12  *
  13  * When distributing Covered Code, include this CDDL HEADER in each
  14  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
  15  * If applicable, add the following below this CDDL HEADER, with the
  16  * fields enclosed by brackets "[]" replaced with your own identifying
  17  * information: Portions Copyright [yyyy] [name of copyright owner]
  18  *
  19  * CDDL HEADER END
  20  */
  21 /*
  22  * Copyright 2007 Sun Microsystems, Inc.  All rights reserved.
  23  * Use is subject to license terms.
  24  */
  25
  26 #ifndef _ASM_MMU_H
  27 #define _ASM_MMU_H
  28
  29 #include <sys/ccompile.h>
  30 #include <sys/types.h>
  31
  32 #ifdef  __cplusplus
  33 extern "C" {
  34 #endif
  35
  36 #if defined(__GNUC__) && !defined(__xpv)
  37
  38 #if defined(__amd64)
  39
  40 extern __GNU_INLINE ulong_t
  41 getcr3(void)
  42 {
  43         uint64_t value;
  44
  45         __asm__ __volatile__(
  46             "movq %%cr3, %0"
  47             : "=r" (value));
  48         return (value);
  49 }
  50
  51 extern __GNU_INLINE void
  52 setcr3(ulong_t value)
  53 {
  54         __asm__ __volatile__(
  55             "movq %0, %%cr3"
  56             : /* no output */
  57             : "r" (value));
  58 }
  59
  60 extern __GNU_INLINE void
  61 reload_cr3(void)
  62 {
  63         setcr3(getcr3());
  64 }
  65
  66 #elif defined(__i386)
  67
  68 extern __GNU_INLINE ulong_t
  69 getcr3(void)
  70 {
  71         uint32_t value;
  72
  73         __asm__ __volatile__(
  74             "movl %%cr3, %0"
  75             : "=r" (value));
  76         return (value);
  77 }
  78
  79 extern __GNU_INLINE void
  80 setcr3(ulong_t value)
  81 {
  82         __asm__ __volatile__(
  83             "movl %0, %%cr3"
  84             : /* no output */
  85             : "r" (value));
  86 }
  87
  88 extern __GNU_INLINE void
  89 reload_cr3(void)
  90 {
  91         setcr3(getcr3());
  92 }
  93
  94 #endif
  95
  96 #endif /* __GNUC__ && !__xpv */
  97
  98 #ifdef __cplusplus
  99 }
 100 #endif
 101
 102 #endif  /* _ASM_MMU_H */