xref: /titanic_50/usr/src/uts/i86pc/sys/asm_misc.h (revision 1ae0874509b6811fdde1dfd46f0d93fd09867a3f)
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, Version 1.0 only
6  * (the "License").  You may not use this file except in compliance
7  * with the License.
8  *
9  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
10  * or http://www.opensolaris.org/os/licensing.
11  * See the License for the specific language governing permissions
12  * and limitations under the License.
13  *
14  * When distributing Covered Code, include this CDDL HEADER in each
15  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
16  * If applicable, add the following below this CDDL HEADER, with the
17  * fields enclosed by brackets "[]" replaced with your own identifying
18  * information: Portions Copyright [yyyy] [name of copyright owner]
19  *
20  * CDDL HEADER END
21  */
22 /*
23  * Copyright 2005 Sun Microsystems, Inc.  All rights reserved.
24  * Use is subject to license terms.
25  */
26 
27 #ifndef _SYS_ASM_MISC_H
28 #define	_SYS_ASM_MISC_H
29 
30 #pragma ident	"%Z%%M%	%I%	%E% SMI"
31 
32 #ifdef	__cplusplus
33 extern "C" {
34 #endif
35 
36 #ifdef _ASM	/* The remainder of this file is only for assembly files */
37 
38 /* Load reg with pointer to per-CPU structure */
39 #if defined(__amd64)
40 #define	LOADCPU(reg)			\
41 	movq	%gs:CPU_SELF, reg;
42 #else
43 #define	LOADCPU(reg)			\
44 	movl	%gs:CPU_SELF, reg;
45 #endif
46 
47 #define	RET_INSTR	0xc3
48 #define	NOP_INSTR	0x90
49 #define	STI_INSTR	0xfb
50 #define	JMP_INSTR	0x00eb
51 
52 #endif /* _ASM */
53 
54 #ifdef	__cplusplus
55 }
56 #endif
57 
58 #endif	/* _SYS_ASM_MISC_H */
59