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#pragma ident	"%Z%%M%	%I%	%E% SMI"
28*7c478bd9Sstevel@tonic-gate
29*7c478bd9Sstevel@tonic-gate#include <sys/asm_linkage.h>
30*7c478bd9Sstevel@tonic-gate#include <sys/privregs.h>
31*7c478bd9Sstevel@tonic-gate
32*7c478bd9Sstevel@tonic-gate#if defined(__lint)
33*7c478bd9Sstevel@tonic-gate#include <kmdb/kmdb_start.h>
34*7c478bd9Sstevel@tonic-gate#endif
35*7c478bd9Sstevel@tonic-gate
36*7c478bd9Sstevel@tonic-gate#include <kmdb/kaif_asmutil.h>
37*7c478bd9Sstevel@tonic-gate
38*7c478bd9Sstevel@tonic-gate/*
39*7c478bd9Sstevel@tonic-gate * This routine is called for the initial trip into the debugger.  We need
40*7c478bd9Sstevel@tonic-gate * to switch over to the debugger stack (which we also need to initialize)
41*7c478bd9Sstevel@tonic-gate * before entering the debugger.  Subsequent re-entries will longjmp their
42*7c478bd9Sstevel@tonic-gate * way in.
43*7c478bd9Sstevel@tonic-gate */
44*7c478bd9Sstevel@tonic-gate#if defined(__lint)
45*7c478bd9Sstevel@tonic-gatevoid
46*7c478bd9Sstevel@tonic-gatekmdb_first_start(void)
47*7c478bd9Sstevel@tonic-gate{
48*7c478bd9Sstevel@tonic-gate}
49*7c478bd9Sstevel@tonic-gate#else	/* __lint */
50*7c478bd9Sstevel@tonic-gate
51*7c478bd9Sstevel@tonic-gate	ENTRY(kmdb_first_start)
52*7c478bd9Sstevel@tonic-gate
53*7c478bd9Sstevel@tonic-gate	GET_NWIN(%g1, %g2);	/* %g1 is scratch, %g2 set to nwin-1 */
54*7c478bd9Sstevel@tonic-gate	sub	%g2, 1, %g2
55*7c478bd9Sstevel@tonic-gate
56*7c478bd9Sstevel@tonic-gate	wrpr	%g2, %cansave
57*7c478bd9Sstevel@tonic-gate	wrpr	%g0, %canrestore
58*7c478bd9Sstevel@tonic-gate
59*7c478bd9Sstevel@tonic-gate	set	kmdb_main_stack, %g1
60*7c478bd9Sstevel@tonic-gate	ldx	[%g1], %g1
61*7c478bd9Sstevel@tonic-gate
62*7c478bd9Sstevel@tonic-gate	set	kmdb_main_stack_size, %g2
63*7c478bd9Sstevel@tonic-gate	ldx	[%g2], %g2
64*7c478bd9Sstevel@tonic-gate
65*7c478bd9Sstevel@tonic-gate	add	%g1, %g2, %g1
66*7c478bd9Sstevel@tonic-gate	sub	%g1, 1, %g1
67*7c478bd9Sstevel@tonic-gate	and	%g1, -STACK_ALIGN64, %g1
68*7c478bd9Sstevel@tonic-gate	sub	%g1, SA64(MINFRAME) + V9BIAS64, %sp
69*7c478bd9Sstevel@tonic-gate
70*7c478bd9Sstevel@tonic-gate	mov	0, %fp
71*7c478bd9Sstevel@tonic-gate	save	%sp, -SA64(MINFRAME64), %sp
72*7c478bd9Sstevel@tonic-gate
73*7c478bd9Sstevel@tonic-gate	/* start the debugger */
74*7c478bd9Sstevel@tonic-gate	call	kmdb_main
75*7c478bd9Sstevel@tonic-gate	nop
76*7c478bd9Sstevel@tonic-gate
77*7c478bd9Sstevel@tonic-gate	SET_SIZE(kmdb_first_start)
78*7c478bd9Sstevel@tonic-gate#endif
79*7c478bd9Sstevel@tonic-gate
80