1/*-
2 * SPDX-License-Identifier: BSD-2-Clause
3 *
4 * Copyright (c) 2006 Marcel Moolenaar
5 * All rights reserved.
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
9 * are met:
10 * 1. Redistributions of source code must retain the above copyright
11 *    notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 *    notice, this list of conditions and the following disclaimer in the
14 *    documentation and/or other materials provided with the distribution.
15 *
16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
17 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
19 * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
20 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
21 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
22 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
23 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
24 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
25 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
26 * SUCH DAMAGE.
27 */
28
29#include <sys/types.h>
30#include <string.h>
31#include <thread_db.h>
32
33#include "libpthread_db.h"
34
35void
36pt_reg_to_ucontext(const struct reg *r, ucontext_t *uc)
37{
38	mcontext_t *mc = &uc->uc_mcontext;
39
40	memcpy(mc->mc_frame, r, MIN(sizeof(mc->mc_frame), sizeof(*r)));
41}
42
43void
44pt_ucontext_to_reg(const ucontext_t *uc, struct reg *r)
45{
46	const mcontext_t *mc = &uc->uc_mcontext;
47
48	memcpy(r, mc->mc_frame, MIN(sizeof(mc->mc_frame), sizeof(*r)));
49}
50
51void
52pt_fpreg_to_ucontext(const struct fpreg *r, ucontext_t *uc)
53{
54	mcontext_t *mc = &uc->uc_mcontext;
55
56	memcpy(mc->mc_fpreg, r, MIN(sizeof(mc->mc_fpreg), sizeof(*r)));
57	mc->mc_flags |= _MC_FP_VALID;
58}
59
60void
61pt_ucontext_to_fpreg(const ucontext_t *uc, struct fpreg *r)
62{
63	const mcontext_t *mc = &uc->uc_mcontext;
64
65	if (mc->mc_flags & _MC_FP_VALID)
66		memcpy(r, mc->mc_fpreg, MIN(sizeof(mc->mc_fpreg), sizeof(*r)));
67	else
68		memset(r, 0, sizeof(*r));
69}
70
71void
72pt_md_init(void)
73{
74}
75
76int
77pt_reg_sstep(struct reg *reg __unused, int step __unused)
78{
79
80	/* XXX */
81	return (0);
82}
83