1 /*
2 * Copyright (c) 2006-2007, Juniper Networks, Inc.
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 *
9 * 1. Redistributions of source code must retain the above copyright
10 * notice, this list of conditions and the following disclaimer.
11 * 2. Redistributions in binary form must reproduce the above copyright
12 * notice, this list of conditions and the following disclaimer in the
13 * documentation and/or other materials provided with the distribution.
14 * 3. Neither the name of Juniper Networks nor the names of its contributors
15 * may be used to endorse or promote products derived from this software
16 * without specific prior written permission.
17 *
18 * THIS SOFTWARE IS PROVIDED BY JUNIPER NETWORKS ``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("$FreeBSD$");
32
33 #include <sys/types.h>
34 #include <sys/procfs.h>
35 #include <ucontext.h>
36 #include <string.h>
37 #include <thread_db.h>
38 #include "libpthread_db.h"
39
40 void
pt_reg_to_ucontext(const struct reg * r,ucontext_t * uc)41 pt_reg_to_ucontext(const struct reg *r, ucontext_t *uc)
42 {
43
44 memcpy(uc->uc_mcontext.mc_regs, &r->r_regs[ZERO],
45 sizeof(uc->uc_mcontext.mc_regs));
46 uc->uc_mcontext.mc_pc = r->r_regs[PC];
47 uc->uc_mcontext.mullo = r->r_regs[MULLO];
48 uc->uc_mcontext.mulhi = r->r_regs[MULHI];
49 }
50
51 void
pt_ucontext_to_reg(const ucontext_t * uc,struct reg * r)52 pt_ucontext_to_reg(const ucontext_t *uc, struct reg *r)
53 {
54 memcpy(&r->r_regs[ZERO], uc->uc_mcontext.mc_regs,
55 sizeof(uc->uc_mcontext.mc_regs));
56 r->r_regs[PC] = uc->uc_mcontext.mc_pc;
57 r->r_regs[MULLO] = uc->uc_mcontext.mullo;
58 r->r_regs[MULHI] = uc->uc_mcontext.mulhi;
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
65 memcpy(uc->uc_mcontext.mc_fpregs, r->r_regs,
66 sizeof(uc->uc_mcontext.mc_fpregs));
67 }
68
69 void
pt_ucontext_to_fpreg(const ucontext_t * uc,struct fpreg * r)70 pt_ucontext_to_fpreg(const ucontext_t *uc, struct fpreg *r)
71 {
72
73 memcpy(r->r_regs, uc->uc_mcontext.mc_fpregs,
74 sizeof(uc->uc_mcontext.mc_fpregs));
75 }
76
77 void
pt_md_init(void)78 pt_md_init(void)
79 {
80 /* Nothing to do */
81 }
82
83 int
pt_reg_sstep(struct reg * reg __unused,int step __unused)84 pt_reg_sstep(struct reg *reg __unused, int step __unused)
85 {
86 /*
87 * XXX: mips doesnt store single step info in any registers
88 */
89 return (0);
90 }
91