xref: /netbsd-src/sys/arch/alpha/include/lwp_private.h (revision 16543c49052c820334cffc5c69b2afde18f02458)
1 /*	$NetBSD: lwp_private.h,v 1.1 2024/11/30 01:04:06 christos Exp $	*/
2 
3 /*-
4  * Copyright (c) 2001 The NetBSD Foundation, Inc.
5  * All rights reserved.
6  *
7  * This code is derived from software contributed to The NetBSD Foundation
8  * by Klaus Klein.
9  *
10  * Redistribution and use in source and binary forms, with or without
11  * modification, are permitted provided that the following conditions
12  * are met:
13  * 1. Redistributions of source code must retain the above copyright
14  *    notice, this list of conditions and the following disclaimer.
15  * 2. Redistributions in binary form must reproduce the above copyright
16  *    notice, this list of conditions and the following disclaimer in the
17  *    documentation and/or other materials provided with the distribution.
18  *
19  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
20  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
21  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
22  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
23  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
24  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
25  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
26  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
27  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
28  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
29  * POSSIBILITY OF SUCH DAMAGE.
30  */
31 
32 #ifndef _ALPHA_LWP_PRIVATE_H_
33 #define _ALPHA_LWP_PRIVATE_H_
34 
35 #include <sys/cdefs.h>
36 #include <sys/tls.h>
37 
38 __BEGIN_DECLS
39 
40 static __inline void *
41 __lwp_getprivate_fast(void)
42 {
43 	register void *__tmp __asm("$0");
44 
45 	__asm volatile("call_pal %1 # PAL_rdunique"
46 		: "=r" (__tmp)
47 		: "i" (0x009e /* PAL_rdunique */));
48 
49 	return __tmp;
50 }
51 
52 __END_DECLS
53 
54 #endif	/* !_ALPHA_LWP_PRIVATE_H_ */
55