libpthread_md.c revision 302408 
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: stable/11/lib/libthread_db/arch/mips/libpthread_md.c 182372 2008-08-28 15:41:12Z obrien $");
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
40void
41pt_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
51void
52pt_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
61void
62pt_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
69void
70pt_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
77void
78pt_md_init(void)
79{
80	/* Nothing to do */
81}
82
83int
84pt_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