1 /*-
2 * Copyright (c) 2014-2015 The FreeBSD Foundation
3 * All rights reserved.
4 *
5 * This software was developed by Andrew Turner under
6 * sponsorship from the FreeBSD Foundation.
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 * 1. Redistributions of source code must retain the above copyright
12 * notice, this list of conditions and the following disclaimer.
13 * 2. Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in the
15 * documentation and/or other materials provided with the distribution.
16 *
17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
20 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
27 * SUCH DAMAGE.
28 */
29
30 #include <sys/cdefs.h>
31 __FBSDID("$FreeBSD$");
32
33 #include <sys/types.h>
34 #include <string.h>
35 #include <thread_db.h>
36
37 #include "libpthread_db.h"
38
39 void abort(void);
40
41 void
pt_reg_to_ucontext(const struct reg * r,ucontext_t * uc)42 pt_reg_to_ucontext(const struct reg *r, ucontext_t *uc)
43 {
44 mcontext_t *mc = &uc->uc_mcontext;
45
46 memcpy(mc->mc_gpregs.gp_x, r->x, sizeof(mc->mc_gpregs.gp_x));
47 mc->mc_gpregs.gp_sp = r->sp;
48 mc->mc_gpregs.gp_lr = r->lr;
49 mc->mc_gpregs.gp_elr = r->elr;
50 mc->mc_gpregs.gp_spsr = r->spsr;
51 }
52
53 void
pt_ucontext_to_reg(const ucontext_t * uc,struct reg * r)54 pt_ucontext_to_reg(const ucontext_t *uc, struct reg *r)
55 {
56 const mcontext_t *mc = &uc->uc_mcontext;
57
58 memcpy(r->x, mc->mc_gpregs.gp_x, sizeof(mc->mc_gpregs.gp_x));
59 r->sp = mc->mc_gpregs.gp_sp;
60 r->lr = mc->mc_gpregs.gp_lr;
61 r->elr = mc->mc_gpregs.gp_elr;
62 r->spsr = mc->mc_gpregs.gp_spsr;
63 }
64
65 void
pt_fpreg_to_ucontext(const struct fpreg * r,ucontext_t * uc)66 pt_fpreg_to_ucontext(const struct fpreg *r, ucontext_t *uc)
67 {
68 mcontext_t *mc = &uc->uc_mcontext;
69
70 memcpy(&mc->mc_fpregs, r, sizeof(*r));
71 mc->mc_flags |= _MC_FP_VALID;
72 }
73
74 void
pt_ucontext_to_fpreg(const ucontext_t * uc,struct fpreg * r)75 pt_ucontext_to_fpreg(const ucontext_t *uc, struct fpreg *r)
76 {
77 const mcontext_t *mc = &uc->uc_mcontext;
78
79 if (mc->mc_flags & _MC_FP_VALID)
80 memcpy(r, &mc->mc_fpregs, sizeof(*r));
81 else
82 memset(r, 0, sizeof(*r));
83
84 }
85
86 void
pt_md_init(void)87 pt_md_init(void)
88 {
89 }
90
91 int
pt_reg_sstep(struct reg * reg __unused,int step __unused)92 pt_reg_sstep(struct reg *reg __unused, int step __unused)
93 {
94
95 return (0);
96 }
97