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, Version 1.0 only
6 * (the "License").  You may not use this file except in compliance
7 * with the License.
8 *
9 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
10 * or http://www.opensolaris.org/os/licensing.
11 * See the License for the specific language governing permissions
12 * and limitations under the License.
13 *
14 * When distributing Covered Code, include this CDDL HEADER in each
15 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
16 * If applicable, add the following below this CDDL HEADER, with the
17 * fields enclosed by brackets "[]" replaced with your own identifying
18 * information: Portions Copyright [yyyy] [name of copyright owner]
19 *
20 * CDDL HEADER END
21 */
22/*
23 * Copyright 2005 Sun Microsystems, Inc.  All rights reserved.
24 * Use is subject to license terms.
25 */
26
27#ifndef _MACH_ASMUTIL_H
28#define	_MACH_ASMUTIL_H
29
30#pragma ident	"%Z%%M%	%I%	%E% SMI"
31
32#ifdef __cplusplus
33extern "C" {
34#endif
35
36#ifdef _ASM
37
38#define	GET_NWIN(scr1, reg1)	\
39	rdpr	%cwp, scr1;	/* save current %cwp */	\
40	wrpr	%g0, 0x1f, %cwp;	\
41	rdpr	%cwp, reg1;		\
42	wrpr	%g0, scr1, %cwp	/* restore current %cwp */
43
44#define	SET_GL(x)	\
45	wrpr	%g0, x, %gl
46
47#define	SWITCH_TO_NORMAL_GLOBALS()	\
48	/* tempararily save %o5 and %o4 and %o3 */; \
49	stx	%o5, [%g5 + KREG_OFF(KREG_O5)]; \
50	stx	%o4, [%g5 + KREG_OFF(KREG_O4)]; \
51	stx	%o3, [%g5 + KREG_OFF(KREG_O3)]; \
52	/* now save %g5, %g4 and %g7 cause we are going to gl 0 */; \
53	mov	%g5, %o5	/* %o5 is gregs pointer now */; \
54	mov	%g4, %o4	/* %o4 is %pstate value now */; \
55	mov	%g7, %o3	/* %o3 is return pc now */; \
56	SET_GL(0);	/* normal globals */
57
58#define	SWITCH_TO_TL1_GLOBALS_AND_RET()	\
59	SET_GL(1)	/* use TL1 globals, set %pstate from %o4 */;\
60	mov	%o4, %g4		/* restore %g4 as %pstate */; \
61	mov	%o5, %g5		/* restore %g5 as gregs pointer */; \
62	mov	%o3, %g7		/* retore %g7 as return pc */; \
63	ldx	[%g5 + KREG_OFF(KREG_O5)], %o5 /* restore saved %o5 */; \
64	ldx	[%g5 + KREG_OFF(KREG_O4)], %o4 /* restore saved %o4 */; \
65	jmp	%g7; \
66	ldx	[%g5 + KREG_OFF(KREG_O3)], %o3 /* restore saved %o3 */
67
68#define	KAIF_SAVE_TL1_STATE()	\
69	ba	kaif_save_tl1_state;\
70	mov	PTSTATE_KERN_COMMON, %g4
71
72#define	KAIF_SAVE_TL1_STATE_SLAVE()	KAIF_SAVE_TL1_STATE()
73
74#define	SET_PSTATE_COMMON_AG(reg1)	\
75	or	%g0, PTSTATE_KERN_COMMON, reg1;\
76	wrpr	reg1, %pstate
77
78#define	KAIF_DEMAP_TLB_ALL(scr)
79
80#endif
81
82#ifdef __cplusplus
83}
84#endif
85
86#endif /* _MACH_ASMUTIL_H */
87