trgt_i386.c revision 142151 
1/*
2 * Copyright (c) 2004 Marcel Moolenaar
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 *
9 * 1. Redistributions of source code must retain the above copyright
10 *    notice, this list of conditions and the following disclaimer.
11 * 2. Redistributions in binary form must reproduce the above copyright
12 *    notice, this list of conditions and the following disclaimer in the
13 *    documentation and/or other materials provided with the distribution.
14 *
15 * THIS SOFTWARE IS PROVIDED BY THE AUTHORS ``AS IS'' AND ANY EXPRESS OR
16 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
17 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
18 * IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY DIRECT, INDIRECT,
19 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
20 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
21 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
22 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
23 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
24 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
25 */
26
27#include <sys/cdefs.h>
28__FBSDID("$FreeBSD: head/gnu/usr.bin/gdb/kgdb/trgt_i386.c 142151 2005-02-20 22:55:07Z kan $");
29
30#include <sys/types.h>
31#include <machine/pcb.h>
32#include <err.h>
33#include <kvm.h>
34#include <string.h>
35
36#include "kgdb.h"
37
38#include <defs.h>
39#include <target.h>
40#include <gdbthread.h>
41#include <inferior.h>
42#include <regcache.h>
43
44void
45kgdb_trgt_fetch_registers(int regno __unused)
46{
47	struct kthr *kt;
48	struct pcb pcb;
49
50	kt = kgdb_thr_lookup_tid(ptid_get_tid(inferior_ptid));
51	if (kt == NULL)
52		return;
53	if (kvm_read(kvm, kt->pcb, &pcb, sizeof(pcb)) != sizeof(pcb)) {
54		warnx("kvm_read: %s", kvm_geterr(kvm));
55		memset(&pcb, 0, sizeof(pcb));
56	}
57	supply_register(3, (char *)&pcb.pcb_ebx);
58	supply_register(4, (char *)&pcb.pcb_esp);
59	supply_register(5, (char *)&pcb.pcb_ebp);
60	supply_register(6, (char *)&pcb.pcb_esi);
61	supply_register(7, (char *)&pcb.pcb_edi);
62	supply_register(8, (char *)&pcb.pcb_eip);
63}
64
65void
66kgdb_trgt_store_registers(int regno __unused)
67{
68	fprintf_unfiltered(gdb_stderr, "XXX: %s\n", __func__);
69}
70