ktr.h revision 243046 
1/*-
2 * Copyright (c) 1996 Berkeley Software Design, Inc. All rights reserved.
3 *
4 * Redistribution and use in source and binary forms, with or without
5 * modification, are permitted provided that the following conditions
6 * are met:
7 * 1. Redistributions of source code must retain the above copyright
8 *    notice, this list of conditions and the following disclaimer.
9 * 2. Redistributions in binary form must reproduce the above copyright
10 *    notice, this list of conditions and the following disclaimer in the
11 *    documentation and/or other materials provided with the distribution.
12 * 3. Berkeley Software Design Inc's name may not be used to endorse or
13 *    promote products derived from this software without specific prior
14 *    written permission.
15 *
16 * THIS SOFTWARE IS PROVIDED BY BERKELEY SOFTWARE DESIGN INC ``AS IS'' AND
17 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
19 * ARE DISCLAIMED.  IN NO EVENT SHALL BERKELEY SOFTWARE DESIGN INC BE LIABLE
20 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
21 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
22 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
23 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
24 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
25 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
26 * SUCH DAMAGE.
27 *
28 *	from BSDI $Id: ktr.h,v 1.10.2.7 2000/03/16 21:44:42 cp Exp $
29 * $FreeBSD: head/sys/sparc64/include/ktr.h 243046 2012-11-15 00:51:57Z jeff $
30 */
31
32#ifndef _MACHINE_KTR_H_
33#define _MACHINE_KTR_H_
34
35#include <sys/ktr.h>
36
37#ifndef LOCORE
38
39#define	KTR_CPU	PCPU_GET(mid)
40
41#else
42
43/*
44 * XXX could really use another register...
45 */
46#define	ATR(desc, r1, r2, r3, l1, l2) \
47	.sect	.rodata ; \
48l1:	.asciz	desc ; \
49	.previous ; \
50	SET(ktr_idx, r2, r1) ; \
51	lduw	[r1], r2 ; \
52l2:	add	r2, 1, r3 ; \
53	set	KTR_ENTRIES - 1, r1 ; \
54	and	r3, r1, r3 ; \
55	set	ktr_idx, r1 ; \
56	casa	[r1] ASI_N, r2, r3 ; \
57	cmp	r2, r3 ; \
58	bne	%icc, l2 ## b ; \
59	 mov	r3, r2 ; \
60	SET(ktr_buf, r3, r1) ; \
61	ldx	[r1], r1 ; \
62	mulx	r2, KTR_SIZEOF, r2 ; \
63	add	r1, r2, r1 ; \
64	rd	%tick, r2 ; \
65	stx	r2, [r1 + KTR_TIMESTAMP] ; \
66	lduw	[PCPU(MID)], r2 ; \
67	stw	r2, [r1 + KTR_CPU] ; \
68	stw	%g0, [r1 + KTR_LINE] ; \
69	stx	%g0, [r1 + KTR_FILE] ; \
70	SET(l1 ## b, r3, r2) ; \
71	stx	r2, [r1 + KTR_DESC]
72
73/*
74 * NB: this clobbers %y.
75 */
76#define CATR(mask, desc, r1, r2, r3, l1, l2, l3) \
77	set	mask, r1 ; \
78	SET(ktr_mask, r3, r2) ; \
79	lduw	[r2], r2 ; \
80	and	r2, r1, r1 ; \
81	brz	r1, l3 ## f ; \
82	 nop ; \
83	lduw	[PCPU(CPUID)], r2 ; \
84	mov	_NCPUBITS, r3 ; \
85	mov	%g0, %y ; \
86	udiv	r2, r3, r2 ; \
87	srl	r2, 0, r2 ; \
88	sllx	r2, PTR_SHIFT, r2 ; \
89	SET(ktr_cpumask, r3, r1) ; \
90	ldx	[r1 + r2], r1 ; \
91	lduw	[PCPU(CPUID)], r2 ; \
92	mov	_NCPUBITS, r3 ; \
93	mov	%g0, %y ; \
94	udiv	r2, r3, r2 ; \
95	srl	r2, 0, r2 ; \
96	smul	r2, r3, r3 ; \
97	lduw	[PCPU(CPUID)], r2 ; \
98	sub	r2, r3, r3 ; \
99	mov	1, r2 ; \
100	sllx	r2, r3, r2 ; \
101	andn	r1, r2, r1 ; \
102	brz	r1, l3 ## f ; \
103	 nop ; \
104	ATR(desc, r1, r2, r3, l1, l2)
105
106#endif /* LOCORE */
107
108#endif /* !_MACHINE_KTR_H_ */
109