1*7c478bd9Sstevel@tonic-gate /*
2*7c478bd9Sstevel@tonic-gate  * CDDL HEADER START
3*7c478bd9Sstevel@tonic-gate  *
4*7c478bd9Sstevel@tonic-gate  * The contents of this file are subject to the terms of the
5*7c478bd9Sstevel@tonic-gate  * Common Development and Distribution License, Version 1.0 only
6*7c478bd9Sstevel@tonic-gate  * (the "License").  You may not use this file except in compliance
7*7c478bd9Sstevel@tonic-gate  * with the License.
8*7c478bd9Sstevel@tonic-gate  *
9*7c478bd9Sstevel@tonic-gate  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
10*7c478bd9Sstevel@tonic-gate  * or http://www.opensolaris.org/os/licensing.
11*7c478bd9Sstevel@tonic-gate  * See the License for the specific language governing permissions
12*7c478bd9Sstevel@tonic-gate  * and limitations under the License.
13*7c478bd9Sstevel@tonic-gate  *
14*7c478bd9Sstevel@tonic-gate  * When distributing Covered Code, include this CDDL HEADER in each
15*7c478bd9Sstevel@tonic-gate  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
16*7c478bd9Sstevel@tonic-gate  * If applicable, add the following below this CDDL HEADER, with the
17*7c478bd9Sstevel@tonic-gate  * fields enclosed by brackets "[]" replaced with your own identifying
18*7c478bd9Sstevel@tonic-gate  * information: Portions Copyright [yyyy] [name of copyright owner]
19*7c478bd9Sstevel@tonic-gate  *
20*7c478bd9Sstevel@tonic-gate  * CDDL HEADER END
21*7c478bd9Sstevel@tonic-gate  */
22*7c478bd9Sstevel@tonic-gate /*
23*7c478bd9Sstevel@tonic-gate  * Copyright 2005 Sun Microsystems, Inc.  All rights reserved.
24*7c478bd9Sstevel@tonic-gate  * Use is subject to license terms.
25*7c478bd9Sstevel@tonic-gate  */
26*7c478bd9Sstevel@tonic-gate 
27*7c478bd9Sstevel@tonic-gate #ifndef _KAIF_ASMUTIL_H
28*7c478bd9Sstevel@tonic-gate #define	_KAIF_ASMUTIL_H
29*7c478bd9Sstevel@tonic-gate 
30*7c478bd9Sstevel@tonic-gate #pragma ident	"%Z%%M%	%I%	%E% SMI"
31*7c478bd9Sstevel@tonic-gate 
32*7c478bd9Sstevel@tonic-gate #ifdef __cplusplus
33*7c478bd9Sstevel@tonic-gate extern "C" {
34*7c478bd9Sstevel@tonic-gate #endif
35*7c478bd9Sstevel@tonic-gate 
36*7c478bd9Sstevel@tonic-gate #include "mach_asmutil.h"
37*7c478bd9Sstevel@tonic-gate 
38*7c478bd9Sstevel@tonic-gate #ifdef _ASM
39*7c478bd9Sstevel@tonic-gate 
40*7c478bd9Sstevel@tonic-gate /*
41*7c478bd9Sstevel@tonic-gate  * Each cpusave buffer has an area set aside for a ring buffer of breadcrumbs.
42*7c478bd9Sstevel@tonic-gate  * The following macros manage the buffer.
43*7c478bd9Sstevel@tonic-gate  */
44*7c478bd9Sstevel@tonic-gate 
45*7c478bd9Sstevel@tonic-gate /* Advance the ring buffer */
46*7c478bd9Sstevel@tonic-gate #define	ADVANCE_CRUMB_POINTER(cpusave, tmp1, tmp2) 	\
47*7c478bd9Sstevel@tonic-gate 	ld	[cpusave + KRS_CURCRUMBIDX], tmp1;	\
48*7c478bd9Sstevel@tonic-gate 	cmp	tmp1, KAIF_NCRUMBS - 1;			\
49*7c478bd9Sstevel@tonic-gate 	bge	1f;					\
50*7c478bd9Sstevel@tonic-gate 	/* Advance the pointer and index */		\
51*7c478bd9Sstevel@tonic-gate 	add	tmp1, 1, tmp1;				\
52*7c478bd9Sstevel@tonic-gate 	st	tmp1, [cpusave + KRS_CURCRUMBIDX];	\
53*7c478bd9Sstevel@tonic-gate 	ldx	[cpusave + KRS_CURCRUMB], tmp1;		\
54*7c478bd9Sstevel@tonic-gate 	ba	2f;					\
55*7c478bd9Sstevel@tonic-gate 	add	tmp1, KRM_SIZE, tmp1;			\
56*7c478bd9Sstevel@tonic-gate 1:	/* Reset the pointer and index */		\
57*7c478bd9Sstevel@tonic-gate 	st	%g0, [cpusave + KRS_CURCRUMBIDX];	\
58*7c478bd9Sstevel@tonic-gate 	add	cpusave, KRS_CRUMBS, tmp1;		\
59*7c478bd9Sstevel@tonic-gate 2:	stx	tmp1, [cpusave + KRS_CURCRUMB];		\
60*7c478bd9Sstevel@tonic-gate 	/* Clear the new crumb */			\
61*7c478bd9Sstevel@tonic-gate 	set	KRM_SIZE, tmp2;				\
62*7c478bd9Sstevel@tonic-gate 3:	subcc	tmp2, 8, tmp2;				\
63*7c478bd9Sstevel@tonic-gate 	bg	3b;					\
64*7c478bd9Sstevel@tonic-gate 	stx	%g0, [tmp1 + tmp2]
65*7c478bd9Sstevel@tonic-gate 
66*7c478bd9Sstevel@tonic-gate /* Set a value in the current breadcrumb buffer */
67*7c478bd9Sstevel@tonic-gate #define	ADD_CRUMB(cpusave, offset, value, tmp) 		\
68*7c478bd9Sstevel@tonic-gate 	ldx	[cpusave + KRS_CURCRUMB], tmp;		\
69*7c478bd9Sstevel@tonic-gate 	stx	value, [tmp + offset];
70*7c478bd9Sstevel@tonic-gate 
71*7c478bd9Sstevel@tonic-gate #define	ADD_CRUMB_CONST(cpusave, offset, value, tmp1, tmp2) \
72*7c478bd9Sstevel@tonic-gate 	ldx	[cpusave + KRS_CURCRUMB], tmp1;		\
73*7c478bd9Sstevel@tonic-gate 	mov	value, tmp2;				\
74*7c478bd9Sstevel@tonic-gate 	stx	tmp2, [tmp1 + offset]
75*7c478bd9Sstevel@tonic-gate 
76*7c478bd9Sstevel@tonic-gate #define	ADD_CRUMB_FLAG(cpusave, flag, tmp1, tmp2, tmp3) \
77*7c478bd9Sstevel@tonic-gate 	ldx	[cpusave + KRS_CURCRUMB], tmp1;		\
78*7c478bd9Sstevel@tonic-gate 	ld	[tmp1 + KRM_FLAG], tmp2;		\
79*7c478bd9Sstevel@tonic-gate 	set	flag, tmp3;				\
80*7c478bd9Sstevel@tonic-gate 	or	tmp2, tmp3, tmp2;			\
81*7c478bd9Sstevel@tonic-gate 	st	tmp2, [tmp1 + KRM_FLAG]
82*7c478bd9Sstevel@tonic-gate 
83*7c478bd9Sstevel@tonic-gate #endif
84*7c478bd9Sstevel@tonic-gate 
85*7c478bd9Sstevel@tonic-gate #ifdef __cplusplus
86*7c478bd9Sstevel@tonic-gate }
87*7c478bd9Sstevel@tonic-gate #endif
88*7c478bd9Sstevel@tonic-gate 
89*7c478bd9Sstevel@tonic-gate #endif /* _KAIF_ASMUTIL_H */
90