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_CPU_H 27 #define _ASM_CPU_H 28 29 #pragma ident "%Z%%M% %I% %E% SMI" 30 31 #ifdef __cplusplus 32 extern "C" { 33 #endif 34 35 #if !defined(__lint) && defined(__GNUC__) 36 37 #if defined(__i386) || defined(__amd64) 38 39 extern __inline__ void ht_pause(void) 40 { 41 __asm__ __volatile__( 42 "pause"); 43 } 44 45 #if !defined(__xpv) 46 47 extern __inline__ void cli(void) 48 { 49 __asm__ __volatile__( 50 "cli" : : : "memory"); 51 } 52 53 extern __inline__ void sti(void) 54 { 55 __asm__ __volatile__( 56 "sti"); 57 } 58 59 extern __inline__ void i86_halt(void) 60 { 61 __asm__ __volatile__( 62 "sti; hlt"); 63 } 64 65 #endif /* !__xpv */ 66 67 #endif /* __i386 || defined(__amd64) */ 68 69 #if defined(__amd64) 70 71 extern __inline__ void __set_ds(selector_t value) 72 { 73 __asm__ __volatile__( 74 "movw %0, %%ds" 75 : /* no output */ 76 : "r" (value)); 77 } 78 79 extern __inline__ void __set_es(selector_t value) 80 { 81 __asm__ __volatile__( 82 "movw %0, %%es" 83 : /* no output */ 84 : "r" (value)); 85 } 86 87 extern __inline__ void __set_fs(selector_t value) 88 { 89 __asm__ __volatile__( 90 "movw %0, %%fs" 91 : /* no output */ 92 : "r" (value)); 93 } 94 95 extern __inline__ void __set_gs(selector_t value) 96 { 97 __asm__ __volatile__( 98 "movw %0, %%gs" 99 : /* no output */ 100 : "r" (value)); 101 } 102 103 #if !defined(__xpv) 104 105 extern __inline__ void __swapgs(void) 106 { 107 __asm__ __volatile__( 108 "mfence; swapgs"); 109 } 110 111 #endif /* !__xpv */ 112 113 #endif /* __amd64 */ 114 115 #endif /* !__lint && __GNUC__ */ 116 117 #ifdef __cplusplus 118 } 119 #endif 120 121 #endif /* _ASM_CPU_H */ 122