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 */ 103