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 extern __inline__ void cli(void) 46 { 47 __asm__ __volatile__( 48 "cli" : : : "memory"); 49 } 50 51 extern __inline__ void sti(void) 52 { 53 __asm__ __volatile__( 54 "sti"); 55 } 56 57 extern __inline__ void i86_halt(void) 58 { 59 __asm__ __volatile__( 60 "sti; hlt"); 61 } 62 63 #endif /* __i386 || defined(__amd64) */ 64 65 #if defined(__amd64) 66 67 extern __inline__ void __set_ds(selector_t value) 68 { 69 __asm__ __volatile__( 70 "movw %0, %%ds" 71 : /* no output */ 72 : "r" (value)); 73 } 74 75 extern __inline__ void __set_es(selector_t value) 76 { 77 __asm__ __volatile__( 78 "movw %0, %%es" 79 : /* no output */ 80 : "r" (value)); 81 } 82 83 extern __inline__ void __set_fs(selector_t value) 84 { 85 __asm__ __volatile__( 86 "movw %0, %%fs" 87 : /* no output */ 88 : "r" (value)); 89 } 90 91 extern __inline__ void __set_gs(selector_t value) 92 { 93 __asm__ __volatile__( 94 "movw %0, %%gs" 95 : /* no output */ 96 : "r" (value)); 97 } 98 99 extern __inline__ void __swapgs(void) 100 { 101 __asm__ __volatile__( 102 "mfence; swapgs"); 103 } 104 105 #endif /* __amd64 */ 106 107 #endif /* !__lint && __GNUC__ */ 108 109 #ifdef __cplusplus 110 } 111 #endif 112 113 #endif /* _ASM_CPU_H */ 114