1 /*-
2 * Copyright (c) 2014-2015 The FreeBSD Foundation
3 *
4 * This software was developed by Andrew Turner under
5 * sponsorship from the FreeBSD Foundation.
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/types.h>
30 #include <string.h>
31 #include <thread_db.h>
32
33 #include "libpthread_db.h"
34
35 void abort(void);
36
37 void
pt_reg_to_ucontext(const struct reg * r,ucontext_t * uc)38 pt_reg_to_ucontext(const struct reg *r, ucontext_t *uc)
39 {
40 mcontext_t *mc = &uc->uc_mcontext;
41
42 memcpy(mc->mc_gpregs.gp_x, r->x, sizeof(mc->mc_gpregs.gp_x));
43 mc->mc_gpregs.gp_sp = r->sp;
44 mc->mc_gpregs.gp_lr = r->lr;
45 mc->mc_gpregs.gp_elr = r->elr;
46 mc->mc_gpregs.gp_spsr = r->spsr;
47 }
48
49 void
pt_ucontext_to_reg(const ucontext_t * uc,struct reg * r)50 pt_ucontext_to_reg(const ucontext_t *uc, struct reg *r)
51 {
52 const mcontext_t *mc = &uc->uc_mcontext;
53
54 memcpy(r->x, mc->mc_gpregs.gp_x, sizeof(mc->mc_gpregs.gp_x));
55 r->sp = mc->mc_gpregs.gp_sp;
56 r->lr = mc->mc_gpregs.gp_lr;
57 r->elr = mc->mc_gpregs.gp_elr;
58 r->spsr = mc->mc_gpregs.gp_spsr;
59 }
60
61 void
pt_fpreg_to_ucontext(const struct fpreg * r,ucontext_t * uc)62 pt_fpreg_to_ucontext(const struct fpreg *r, ucontext_t *uc)
63 {
64 mcontext_t *mc = &uc->uc_mcontext;
65
66 memcpy(&mc->mc_fpregs, r, sizeof(*r));
67 mc->mc_flags |= _MC_FP_VALID;
68 }
69
70 void
pt_ucontext_to_fpreg(const ucontext_t * uc,struct fpreg * r)71 pt_ucontext_to_fpreg(const ucontext_t *uc, struct fpreg *r)
72 {
73 const mcontext_t *mc = &uc->uc_mcontext;
74
75 if (mc->mc_flags & _MC_FP_VALID)
76 memcpy(r, &mc->mc_fpregs, sizeof(*r));
77 else
78 memset(r, 0, sizeof(*r));
79
80 }
81
82 void
pt_md_init(void)83 pt_md_init(void)
84 {
85 }
86
87 int
pt_reg_sstep(struct reg * reg __unused,int step __unused)88 pt_reg_sstep(struct reg *reg __unused, int step __unused)
89 {
90
91 return (0);
92 }
93