xref: /titanic_52/usr/src/uts/sparc/asm/thread.h (revision c2580b931007758eab8cb5ae8726ebe1588e259b)
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 /*
23  * Copyright 2005 Sun Microsystems, Inc.  All rights reserved.
24  * Use is subject to license terms.
25  */
26 
27 #ifndef _ASM_THREAD_H
28 #define	_ASM_THREAD_H
29 
30 #pragma ident	"%Z%%M%	%I%	%E% SMI"
31 
32 #include <sys/types.h>
33 
34 #ifdef	__cplusplus
35 extern "C" {
36 #endif
37 
38 #if !defined(__lint) && defined(__GNUC__)
39 
40 struct _kthread;
41 
42 extern __inline__ struct _kthread *
43 threadp(void)
44 {
45 	void *__value;
46 
47 #if defined(__sparcv9)
48 	__asm__ __volatile__(
49 	    ".register %%g7, #scratch\n\t"
50 	    "mov %%g7, %0"
51 	    : "=r" (__value));
52 #else
53 #error	"port me"
54 #endif
55 	return (__value);
56 }
57 
58 extern __inline__ caddr_t
59 caller(void)
60 {
61 	caddr_t __value;
62 
63 #if defined(__sparcv9)
64 	__asm__ __volatile__(
65 	    "mov %%i7, %0"
66 	    : "=r" (__value));
67 #else
68 #error	"port me"
69 #endif
70 	return (__value);
71 }
72 
73 extern __inline__ caddr_t
74 callee(void)
75 {
76 	caddr_t __value;
77 
78 #if defined(__sparcv9)
79 	__asm__ __volatile__(
80 	    "mov %%o7, %0"
81 	    : "=r" (__value));
82 #else
83 #error	"port me"
84 #endif
85 	return (__value);
86 }
87 
88 #endif	/* !__lint && __GNUC__ */
89 
90 #ifdef	__cplusplus
91 }
92 #endif
93 
94 #endif	/* _ASM_THREAD_H */
95