libpthread_md.c revision 330897 
1/*-
2 * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
3 *
4 * Copyright (c) 2004 Marcel Moolenaar
5 * Copyright (c) 2011 Marius Strobl <marius@FreeBSD.org>
6 * All rights reserved.
7 *
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
10 * are met:
11 *
12 * 1. Redistributions of source code must retain the above copyright
13 *    notice, this list of conditions and the following disclaimer.
14 * 2. Redistributions in binary form must reproduce the above copyright
15 *    notice, this list of conditions and the following disclaimer in the
16 *    documentation and/or other materials provided with the distribution.
17 *
18 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
19 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
20 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
21 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
22 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
23 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
24 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
25 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
26 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
27 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
28 */
29
30#include <sys/cdefs.h>
31__FBSDID("$FreeBSD: stable/11/lib/libthread_db/arch/sparc64/libpthread_md.c 330897 2018-03-14 03:19:51Z eadler $");
32
33#include <sys/types.h>
34#include <string.h>
35#include <thread_db.h>
36#include <ucontext.h>
37#include <machine/fsr.h>
38
39#include "libpthread_db.h"
40
41void
42pt_reg_to_ucontext(const struct reg *r, ucontext_t *uc)
43{
44
45	memcpy(&uc->uc_mcontext, r, MIN(sizeof(uc->uc_mcontext), sizeof(*r)));
46}
47
48void
49pt_ucontext_to_reg(const ucontext_t *uc, struct reg *r)
50{
51
52	memcpy(r, &uc->uc_mcontext, MIN(sizeof(uc->uc_mcontext), sizeof(*r)));
53}
54
55void
56pt_fpreg_to_ucontext(const struct fpreg* r, ucontext_t *uc)
57{
58	mcontext_t *mc = &uc->uc_mcontext;
59
60	memcpy(mc->mc_fp, r->fr_regs, MIN(sizeof(mc->mc_fp),
61	    sizeof(r->fr_regs)));
62	mc->_mc_fsr = r->fr_fsr;
63	mc->_mc_gsr = r->fr_gsr;
64	mc->_mc_fprs |= FPRS_FEF;
65}
66
67void
68pt_ucontext_to_fpreg(const ucontext_t *uc, struct fpreg *r)
69{
70	const mcontext_t *mc = &uc->uc_mcontext;
71
72	if ((mc->_mc_fprs & FPRS_FEF) != 0) {
73		memcpy(r->fr_regs, mc->mc_fp, MIN(sizeof(mc->mc_fp),
74		    sizeof(r->fr_regs)));
75		r->fr_fsr = mc->_mc_fsr;
76		r->fr_gsr = mc->_mc_gsr;
77	} else
78		memset(r, 0, sizeof(*r));
79}
80
81void
82pt_md_init(void)
83{
84
85}
86
87int
88pt_reg_sstep(struct reg *reg __unused, int step __unused)
89{
90
91	return (0);
92}
93