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/cdefs.h>
30 #include <sys/types.h>
31 #include <string.h>
32 #include <thread_db.h>
33
34 #include "libpthread_db.h"
35
36 void
pt_reg_to_ucontext(const struct reg * r,ucontext_t * uc)37 pt_reg_to_ucontext(const struct reg *r, ucontext_t *uc)
38 {
39 mcontext_t *mc = &uc->uc_mcontext;
40
41 memcpy(mc->mc_frame, r, MIN(sizeof(mc->mc_frame), sizeof(*r)));
42 }
43
44 void
pt_ucontext_to_reg(const ucontext_t * uc,struct reg * r)45 pt_ucontext_to_reg(const ucontext_t *uc, struct reg *r)
46 {
47 const mcontext_t *mc = &uc->uc_mcontext;
48
49 memcpy(r, mc->mc_frame, MIN(sizeof(mc->mc_frame), sizeof(*r)));
50 }
51
52 void
pt_fpreg_to_ucontext(const struct fpreg * r,ucontext_t * uc)53 pt_fpreg_to_ucontext(const struct fpreg *r, ucontext_t *uc)
54 {
55 mcontext_t *mc = &uc->uc_mcontext;
56
57 memcpy(mc->mc_fpreg, r, MIN(sizeof(mc->mc_fpreg), sizeof(*r)));
58 mc->mc_flags |= _MC_FP_VALID;
59 }
60
61 void
pt_ucontext_to_fpreg(const ucontext_t * uc,struct fpreg * r)62 pt_ucontext_to_fpreg(const ucontext_t *uc, struct fpreg *r)
63 {
64 const mcontext_t *mc = &uc->uc_mcontext;
65
66 if (mc->mc_flags & _MC_FP_VALID)
67 memcpy(r, mc->mc_fpreg, MIN(sizeof(mc->mc_fpreg), sizeof(*r)));
68 else
69 memset(r, 0, sizeof(*r));
70 }
71
72 void
pt_md_init(void)73 pt_md_init(void)
74 {
75 }
76
77 int
pt_reg_sstep(struct reg * reg __unused,int step __unused)78 pt_reg_sstep(struct reg *reg __unused, int step __unused)
79 {
80
81 /* XXX */
82 return (0);
83 }
84