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 * Copyright 2018 Joyent, Inc. 26 */ 27 28 #ifndef _ASM_MMU_H 29 #define _ASM_MMU_H 30 31 #include <sys/ccompile.h> 32 #include <sys/types.h> 33 34 #ifdef __cplusplus 35 extern "C" { 36 #endif 37 38 #if defined(__GNUC__) 39 40 #if !defined(__xpv) 41 42 extern __GNU_INLINE ulong_t 43 getcr3(void) 44 { 45 uint64_t value; 46 47 __asm__ __volatile__( 48 "movq %%cr3, %0" 49 : "=r" (value)); 50 return (value); 51 } 52 53 extern __GNU_INLINE void 54 setcr3(ulong_t value) 55 { 56 __asm__ __volatile__( 57 "movq %0, %%cr3" 58 : /* no output */ 59 : "r" (value)); 60 } 61 62 extern __GNU_INLINE ulong_t 63 getcr4(void) 64 { 65 uint64_t value; 66 67 __asm__ __volatile__( 68 "movq %%cr4, %0" 69 : "=r" (value)); 70 return (value); 71 } 72 73 extern __GNU_INLINE void 74 setcr4(ulong_t value) 75 { 76 __asm__ __volatile__( 77 "movq %0, %%cr4" 78 : /* no output */ 79 : "r" (value)); 80 } 81 82 extern __GNU_INLINE void 83 reload_cr3(void) 84 { 85 setcr3(getcr3()); 86 } 87 88 /* 89 * We clobber memory: we're not writing anything, but we don't want to 90 * potentially get re-ordered beyond the TLB flush. 91 */ 92 extern __GNU_INLINE void 93 invpcid_insn(uint64_t type, uint64_t pcid, uintptr_t addr) 94 { 95 uint64_t pcid_desc[2] = { pcid, addr }; 96 __asm__ __volatile__( 97 "invpcid %0, %1" 98 : /* no output */ 99 : "m" (*pcid_desc), "r" (type) 100 : "memory"); 101 } 102 103 #endif /* !__xpv */ 104 105 extern __GNU_INLINE void 106 mmu_invlpg(caddr_t addr) 107 { 108 __asm__ __volatile__( 109 "invlpg %0" 110 : "=m" (*addr) 111 : "m" (*addr)); 112 } 113 114 #endif /* __GNUC__ */ 115 116 #ifdef __cplusplus 117 } 118 #endif 119 120 #endif /* _ASM_MMU_H */ 121