1*0Sstevel@tonic-gate /*
2*0Sstevel@tonic-gate * CDDL HEADER START
3*0Sstevel@tonic-gate *
4*0Sstevel@tonic-gate * The contents of this file are subject to the terms of the
5*0Sstevel@tonic-gate * Common Development and Distribution License, Version 1.0 only
6*0Sstevel@tonic-gate * (the "License"). You may not use this file except in compliance
7*0Sstevel@tonic-gate * with the License.
8*0Sstevel@tonic-gate *
9*0Sstevel@tonic-gate * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
10*0Sstevel@tonic-gate * or http://www.opensolaris.org/os/licensing.
11*0Sstevel@tonic-gate * See the License for the specific language governing permissions
12*0Sstevel@tonic-gate * and limitations under the License.
13*0Sstevel@tonic-gate *
14*0Sstevel@tonic-gate * When distributing Covered Code, include this CDDL HEADER in each
15*0Sstevel@tonic-gate * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
16*0Sstevel@tonic-gate * If applicable, add the following below this CDDL HEADER, with the
17*0Sstevel@tonic-gate * fields enclosed by brackets "[]" replaced with your own identifying
18*0Sstevel@tonic-gate * information: Portions Copyright [yyyy] [name of copyright owner]
19*0Sstevel@tonic-gate *
20*0Sstevel@tonic-gate * CDDL HEADER END
21*0Sstevel@tonic-gate */
22*0Sstevel@tonic-gate /*
23*0Sstevel@tonic-gate * Copyright 2004 Sun Microsystems, Inc. All rights reserved.
24*0Sstevel@tonic-gate * Use is subject to license terms.
25*0Sstevel@tonic-gate */
26*0Sstevel@tonic-gate
27*0Sstevel@tonic-gate #pragma ident "%Z%%M% %I% %E% SMI"
28*0Sstevel@tonic-gate
29*0Sstevel@tonic-gate /*
30*0Sstevel@tonic-gate * CPU-specific target implementation
31*0Sstevel@tonic-gate *
32*0Sstevel@tonic-gate * Each CPU provides a set of debugging facilities. We have per-CPU "modules",
33*0Sstevel@tonic-gate * each of which exposes a kmt_cpu_t. When initialized, these modules will
34*0Sstevel@tonic-gate * install dcmds, walkers, and the like in order to allow the user to take
35*0Sstevel@tonic-gate * advantage of features specific to the CPU being used.
36*0Sstevel@tonic-gate */
37*0Sstevel@tonic-gate
38*0Sstevel@tonic-gate #include <kmdb/kmdb_kdi.h>
39*0Sstevel@tonic-gate #include <kmdb/kvm_cpu_impl.h>
40*0Sstevel@tonic-gate #include <mdb/mdb_target.h>
41*0Sstevel@tonic-gate #include <mdb/mdb_err.h>
42*0Sstevel@tonic-gate #include <mdb/mdb.h>
43*0Sstevel@tonic-gate
44*0Sstevel@tonic-gate static kmt_cpu_ctor_f *const kmt_cpu_ctors[] = {
45*0Sstevel@tonic-gate #if defined(__i386) || defined(__amd64)
46*0Sstevel@tonic-gate kmt_cpu_amd_create,
47*0Sstevel@tonic-gate kmt_cpu_p4_create,
48*0Sstevel@tonic-gate #if defined(__i386)
49*0Sstevel@tonic-gate kmt_cpu_p6_create,
50*0Sstevel@tonic-gate #endif /* __i386 */
51*0Sstevel@tonic-gate #endif /* __i386 || __amd64 */
52*0Sstevel@tonic-gate NULL
53*0Sstevel@tonic-gate };
54*0Sstevel@tonic-gate
55*0Sstevel@tonic-gate kmt_cpu_t *
kmt_cpu_create(mdb_tgt_t * t)56*0Sstevel@tonic-gate kmt_cpu_create(mdb_tgt_t *t)
57*0Sstevel@tonic-gate {
58*0Sstevel@tonic-gate kmt_cpu_t *cpu;
59*0Sstevel@tonic-gate int retry = 0;
60*0Sstevel@tonic-gate int i;
61*0Sstevel@tonic-gate
62*0Sstevel@tonic-gate for (i = 0; kmt_cpu_ctors[i] != NULL; i++) {
63*0Sstevel@tonic-gate if ((cpu = kmt_cpu_ctors[i](t)) != NULL)
64*0Sstevel@tonic-gate return (cpu);
65*0Sstevel@tonic-gate else if (errno == EAGAIN)
66*0Sstevel@tonic-gate retry = 1;
67*0Sstevel@tonic-gate }
68*0Sstevel@tonic-gate
69*0Sstevel@tonic-gate if (retry)
70*0Sstevel@tonic-gate (void) set_errno(EAGAIN);
71*0Sstevel@tonic-gate
72*0Sstevel@tonic-gate return (NULL);
73*0Sstevel@tonic-gate }
74*0Sstevel@tonic-gate
75*0Sstevel@tonic-gate void
kmt_cpu_destroy(kmt_cpu_t * cpu)76*0Sstevel@tonic-gate kmt_cpu_destroy(kmt_cpu_t *cpu)
77*0Sstevel@tonic-gate {
78*0Sstevel@tonic-gate if (cpu != NULL)
79*0Sstevel@tonic-gate cpu->kmt_cpu_ops->kco_destroy(cpu);
80*0Sstevel@tonic-gate }
81*0Sstevel@tonic-gate
82*0Sstevel@tonic-gate int
kmt_cpu_step_branch(mdb_tgt_t * t,kmt_cpu_t * cpu)83*0Sstevel@tonic-gate kmt_cpu_step_branch(mdb_tgt_t *t, kmt_cpu_t *cpu)
84*0Sstevel@tonic-gate {
85*0Sstevel@tonic-gate if (cpu == NULL || cpu->kmt_cpu_ops->kco_step_branch == NULL)
86*0Sstevel@tonic-gate return (set_errno(EMDB_TGTHWNOTSUP));
87*0Sstevel@tonic-gate
88*0Sstevel@tonic-gate return (cpu->kmt_cpu_ops->kco_step_branch(cpu, t));
89*0Sstevel@tonic-gate }
90*0Sstevel@tonic-gate
91*0Sstevel@tonic-gate const char *
kmt_cpu_name(kmt_cpu_t * cpu)92*0Sstevel@tonic-gate kmt_cpu_name(kmt_cpu_t *cpu)
93*0Sstevel@tonic-gate {
94*0Sstevel@tonic-gate if (cpu == NULL)
95*0Sstevel@tonic-gate return ("none");
96*0Sstevel@tonic-gate else
97*0Sstevel@tonic-gate return (cpu->kmt_cpu_ops->kco_name(cpu));
98*0Sstevel@tonic-gate }
99