db_interface.c revision 131952 
1/*-
2 * Copyright (c) 2001 Jake Burkholder.
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 *    notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 *    notice, this list of conditions and the following disclaimer in the
12 *    documentation and/or other materials provided with the distribution.
13 *
14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
17 * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
24 * SUCH DAMAGE.
25 *
26 * $FreeBSD: head/sys/sparc64/sparc64/db_interface.c 131952 2004-07-10 23:47:20Z marcel $
27 */
28
29#include <sys/param.h>
30#include <sys/systm.h>
31#include <sys/reboot.h>
32#include <sys/cons.h>
33#include <sys/kdb.h>
34#include <sys/ktr.h>
35#include <sys/linker_set.h>
36#include <sys/lock.h>
37#include <sys/pcpu.h>
38#include <sys/proc.h>
39#include <sys/smp.h>
40
41#include <machine/cpu.h>
42#include <machine/md_var.h>
43
44#include <vm/vm.h>
45#include <vm/pmap.h>
46
47#include <ddb/ddb.h>
48#include <ddb/db_access.h>
49#include <ddb/db_sym.h>
50#include <ddb/db_variables.h>
51
52#include <machine/atomic.h>
53#include <machine/setjmp.h>
54
55int
56db_read_bytes(vm_offset_t addr, size_t size, char *data)
57{
58	jmp_buf jb;
59	void *prev_jb;
60	char *src;
61	int ret;
62
63	prev_jb = kdb_jmpbuf(jb);
64	ret = setjmp(jb);
65	if (ret == 0) {
66		src = (char *)addr;
67		while (size-- > 0)
68			*data++ = *src++;
69	}
70	(void)kdb_jmpbuf(prev_jb);
71	return (ret);
72}
73
74int
75db_write_bytes(vm_offset_t addr, size_t size, char *data)
76{
77	jmp_buf jb;
78	void *prev_jb;
79	char *dst;
80	int ret;
81
82	prev_jb = kdb_jmpbuf(jb);
83	ret = setjmp(jb);
84	if (ret == 0) {
85		dst = (char *)addr;
86		while (size-- > 0)
87			*dst++ = *data++;
88	}
89	(void)kdb_jmpbuf(prev_jb);
90	return (ret);
91}
92
93void
94db_show_mdpcpu(struct pcpu *pc)
95{
96}
97
98DB_COMMAND(reboot, db_reboot)
99{
100	cpu_reset();
101}
102
103DB_COMMAND(halt, db_halt)
104{
105	cpu_halt();
106}
107