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("$FreeBSD$");
29
30#include <sys/param.h>
31#include <sys/systm.h>
32#include <sys/kdb.h>
33#include <sys/kernel.h>
34#include <sys/signal.h>
35
36#include <machine/asm.h>
37#include <machine/gdb_machdep.h>
38#include <machine/pcb.h>
39#include <machine/reg.h>
40
41#include <gdb/gdb.h>
42
43void *
44gdb_cpu_getreg(int regnum, size_t *regsz)
45{
46	static uint64_t synth;
47
48	*regsz = gdb_cpu_regsz(regnum);
49	switch (regnum) {
50		/* 0-7: g0-g7 */
51		/* 8-15: o0-o7 */
52	case 14:
53		synth = kdb_thrctx->pcb_sp - CCFSZ;
54		return (&synth);
55		/* 16-23: l0-l7 */
56		/* 24-31: i0-i7 */
57	case 30: return (&kdb_thrctx->pcb_sp);
58		/* 32-63: f0-f31 */
59		/* 64-79: f32-f62 (16 double FP) */
60	case 80: return (&kdb_thrctx->pcb_pc);
61	}
62	return (NULL);
63}
64
65void
66gdb_cpu_setreg(int regnum, void *val)
67{
68	switch (regnum) {
69	}
70}
71