1/*-
2 * Copyright (c) 1998 Doug Rabson
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 *    notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 *    notice, this list of conditions and the following disclaimer in the
12 *    documentation and/or other materials provided with the distribution.
13 *
14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
17 * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
24 * SUCH DAMAGE.
25 *
26 * $FreeBSD$
27 */
28
29#ifndef _MACHINE_CPUFUNC_H_
30#define _MACHINE_CPUFUNC_H_
31
32#ifdef _KERNEL
33
34#include <sys/types.h>
35#include <machine/ia64_cpu.h>
36#include <machine/vmparam.h>
37
38#ifndef _SYS_CDEFS_H_
39#error this file needs sys/cdefs.h as a prerequisite
40#endif
41
42struct thread;
43
44#define	IA64_FIXED_BREAK	0x84B5D
45
46#ifdef __GNUCLIKE_ASM
47
48static __inline void
49breakpoint(void)
50{
51	__asm __volatile("break.m %0" :: "i"(IA64_FIXED_BREAK));
52}
53
54#define	HAVE_INLINE_FFS
55#define	ffs(x)	__builtin_ffs(x)
56
57
58static __inline void
59ia64_disable_intr(void)
60{
61	__asm __volatile ("rsm psr.i");
62}
63
64static __inline void
65ia64_enable_intr(void)
66{
67	__asm __volatile ("ssm psr.i;; srlz.d");
68}
69
70static __inline register_t
71intr_disable(void)
72{
73	register_t psr;
74
75	__asm __volatile ("mov %0=psr;;" : "=r"(psr));
76	ia64_disable_intr();
77	return ((psr & IA64_PSR_I) ? 1 : 0);
78}
79
80static __inline void
81intr_restore(register_t ie)
82{
83	if (ie)
84		ia64_enable_intr();
85}
86
87#endif /* __GNUCLIKE_ASM */
88
89#endif /* _KERNEL */
90
91#endif /* !_MACHINE_CPUFUNC_H_ */
92