1/*
2 * Copyright (c) 2004 Marcel Moolenaar
3 * Copyright (c) 2011 Marius Strobl <marius@FreeBSD.org>
4 * All rights reserved.
5 *
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions
8 * are met:
9 *
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 ``AS IS'' AND ANY EXPRESS OR
17 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
18 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
19 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
20 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
21 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
22 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
23 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
24 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
25 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
26 */
27
28#include <sys/cdefs.h>
29__FBSDID("$FreeBSD$");
30
31#include <sys/types.h>
32#include <string.h>
33#include <thread_db.h>
34#include <ucontext.h>
35#include <machine/fsr.h>
36
37#include "libpthread_db.h"
38
39void
40pt_reg_to_ucontext(const struct reg *r, ucontext_t *uc)
41{
42
43	memcpy(&uc->uc_mcontext, r, MIN(sizeof(uc->uc_mcontext), sizeof(*r)));
44}
45
46void
47pt_ucontext_to_reg(const ucontext_t *uc, struct reg *r)
48{
49
50	memcpy(r, &uc->uc_mcontext, MIN(sizeof(uc->uc_mcontext), sizeof(*r)));
51}
52
53void
54pt_fpreg_to_ucontext(const struct fpreg* r, ucontext_t *uc)
55{
56	mcontext_t *mc = &uc->uc_mcontext;
57
58	memcpy(mc->mc_fp, r->fr_regs, MIN(sizeof(mc->mc_fp),
59	    sizeof(r->fr_regs)));
60	mc->_mc_fsr = r->fr_fsr;
61	mc->_mc_gsr = r->fr_gsr;
62	mc->_mc_fprs |= FPRS_FEF;
63}
64
65void
66pt_ucontext_to_fpreg(const ucontext_t *uc, struct fpreg *r)
67{
68	const mcontext_t *mc = &uc->uc_mcontext;
69
70	if ((mc->_mc_fprs & FPRS_FEF) != 0) {
71		memcpy(r->fr_regs, mc->mc_fp, MIN(sizeof(mc->mc_fp),
72		    sizeof(r->fr_regs)));
73		r->fr_fsr = mc->_mc_fsr;
74		r->fr_gsr = mc->_mc_gsr;
75	} else
76		memset(r, 0, sizeof(*r));
77}
78
79void
80pt_md_init(void)
81{
82
83}
84
85int
86pt_reg_sstep(struct reg *reg __unused, int step __unused)
87{
88
89	return (0);
90}
91