1132332Smarcel/*
2132332Smarcel * Copyright (c) 2004 Marcel Moolenaar
3224685Smarius * Copyright (c) 2011 Marius Strobl <marius@FreeBSD.org>
4132332Smarcel * All rights reserved.
5132332Smarcel *
6132332Smarcel * Redistribution and use in source and binary forms, with or without
7132332Smarcel * modification, are permitted provided that the following conditions
8132332Smarcel * are met:
9132332Smarcel *
10132332Smarcel * 1. Redistributions of source code must retain the above copyright
11132332Smarcel *    notice, this list of conditions and the following disclaimer.
12132332Smarcel * 2. Redistributions in binary form must reproduce the above copyright
13132332Smarcel *    notice, this list of conditions and the following disclaimer in the
14132332Smarcel *    documentation and/or other materials provided with the distribution.
15132332Smarcel *
16132332Smarcel * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
17132332Smarcel * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
18132332Smarcel * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
19132332Smarcel * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
20132332Smarcel * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
21132332Smarcel * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
22132332Smarcel * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
23132332Smarcel * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
24132332Smarcel * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
25132332Smarcel * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
26132332Smarcel */
27132332Smarcel
28132332Smarcel#include <sys/cdefs.h>
29132332Smarcel__FBSDID("$FreeBSD$");
30132332Smarcel
31224685Smarius#include <sys/types.h>
32224685Smarius#include <string.h>
33181059Smarcel#include <thread_db.h>
34132360Smarcel#include <ucontext.h>
35224685Smarius#include <machine/fsr.h>
36132351Sscottl
37181059Smarcel#include "libpthread_db.h"
38181059Smarcel
39132332Smarcelvoid
40224685Smariuspt_reg_to_ucontext(const struct reg *r, ucontext_t *uc)
41132332Smarcel{
42224685Smarius
43224685Smarius	memcpy(&uc->uc_mcontext, r, MIN(sizeof(uc->uc_mcontext), sizeof(*r)));
44132332Smarcel}
45132332Smarcel
46132332Smarcelvoid
47224685Smariuspt_ucontext_to_reg(const ucontext_t *uc, struct reg *r)
48132332Smarcel{
49224685Smarius
50224685Smarius	memcpy(r, &uc->uc_mcontext, MIN(sizeof(uc->uc_mcontext), sizeof(*r)));
51132332Smarcel}
52132332Smarcel
53132332Smarcelvoid
54224685Smariuspt_fpreg_to_ucontext(const struct fpreg* r, ucontext_t *uc)
55132332Smarcel{
56224685Smarius	mcontext_t *mc = &uc->uc_mcontext;
57224685Smarius
58224685Smarius	memcpy(mc->mc_fp, r->fr_regs, MIN(sizeof(mc->mc_fp),
59224685Smarius	    sizeof(r->fr_regs)));
60254157Smarius	mc->_mc_fsr = r->fr_fsr;
61254157Smarius	mc->_mc_gsr = r->fr_gsr;
62254157Smarius	mc->_mc_fprs |= FPRS_FEF;
63132332Smarcel}
64132332Smarcel
65132332Smarcelvoid
66224685Smariuspt_ucontext_to_fpreg(const ucontext_t *uc, struct fpreg *r)
67132332Smarcel{
68224685Smarius	const mcontext_t *mc = &uc->uc_mcontext;
69224685Smarius
70254157Smarius	if ((mc->_mc_fprs & FPRS_FEF) != 0) {
71224685Smarius		memcpy(r->fr_regs, mc->mc_fp, MIN(sizeof(mc->mc_fp),
72224685Smarius		    sizeof(r->fr_regs)));
73254157Smarius		r->fr_fsr = mc->_mc_fsr;
74254157Smarius		r->fr_gsr = mc->_mc_gsr;
75224685Smarius	} else
76224685Smarius		memset(r, 0, sizeof(*r));
77132332Smarcel}
78132332Smarcel
79132332Smarcelvoid
80132332Smarcelpt_md_init(void)
81132332Smarcel{
82224685Smarius
83132332Smarcel}
84132332Smarcel
85132332Smarcelint
86181341Smarcelpt_reg_sstep(struct reg *reg __unused, int step __unused)
87132332Smarcel{
88224685Smarius
89132332Smarcel	return (0);
90132332Smarcel}
91