1/*-
2 * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
3 *
4 * Copyright (c) 2007 Olivier Houchard
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__FBSDID("$FreeBSD$");
31
32#include <sys/types.h>
33#include <string.h>
34#include <thread_db.h>
35
36#include "libpthread_db.h"
37
38void
39pt_reg_to_ucontext(const struct reg *r, ucontext_t *uc)
40{
41	mcontext_t *mc = &uc->uc_mcontext;
42	__greg_t *gr = mc->__gregs;
43
44	gr[_REG_R0] = r->r[0];
45	gr[_REG_R1] = r->r[1];
46	gr[_REG_R2] = r->r[2];
47	gr[_REG_R3] = r->r[3];
48	gr[_REG_R4] = r->r[4];
49	gr[_REG_R5] = r->r[5];
50	gr[_REG_R6] = r->r[6];
51	gr[_REG_R7] = r->r[7];
52	gr[_REG_R8] = r->r[8];
53	gr[_REG_R9] = r->r[9];
54	gr[_REG_R10] = r->r[10];
55	gr[_REG_R11] = r->r[11];
56	gr[_REG_R12] = r->r[12];
57	gr[_REG_SP] = r->r_sp;
58	gr[_REG_LR] = r->r_lr;
59	gr[_REG_PC] = r->r_pc;
60	gr[_REG_CPSR] = r->r_cpsr;
61}
62
63void
64pt_ucontext_to_reg(const ucontext_t *uc, struct reg *r)
65{
66	const mcontext_t *mc = &uc->uc_mcontext;
67
68	const __greg_t *gr = mc->__gregs;
69
70	r->r[0] = gr[_REG_R0];
71	r->r[1] = gr[_REG_R1];
72	r->r[2] = gr[_REG_R2];
73	r->r[3] = gr[_REG_R3];
74	r->r[4] = gr[_REG_R4];
75	r->r[5] = gr[_REG_R5];
76	r->r[6] = gr[_REG_R6];
77	r->r[7] = gr[_REG_R7];
78	r->r[8] = gr[_REG_R8];
79	r->r[9] = gr[_REG_R9];
80	r->r[10] = gr[_REG_R10];
81	r->r[11] = gr[_REG_R11];
82	r->r[12] = gr[_REG_R12];
83	r->r_sp = gr[_REG_SP];
84	r->r_lr = gr[_REG_LR];
85	r->r_pc = gr[_REG_PC];
86	r->r_cpsr = gr[_REG_CPSR];
87}
88
89void
90pt_fpreg_to_ucontext(const struct fpreg *r __unused, ucontext_t *uc)
91{
92	mcontext_t *mc = &uc->uc_mcontext;
93
94	/* XXX */
95	mc->mc_vfp_size = 0;
96	mc->mc_vfp_ptr = NULL;
97	memset(mc->mc_spare, 0, sizeof(mc->mc_spare));
98}
99
100void
101pt_ucontext_to_fpreg(const ucontext_t *uc __unused, struct fpreg *r)
102{
103
104	/* XXX */
105	memset(r, 0, sizeof(*r));
106}
107
108void
109pt_md_init(void)
110{
111}
112
113int
114pt_reg_sstep(struct reg *reg __unused, int step __unused)
115{
116
117	/* XXX */
118	return (0);
119}
120