1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
|
/* Native-dependent code for OpenBSD/mips64.
Copyright 2004 Free Software Foundation, Inc.
This file is part of GDB.
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 59 Temple Place - Suite 330,
Boston, MA 02111-1307, USA. */
#include "defs.h"
#include "inferior.h"
#include "regcache.h"
#include "target.h"
#include <sys/types.h>
#include <sys/ptrace.h>
#include <machine/reg.h>
#include "mips-tdep.h"
#include "inf-ptrace.h"
#include "obsd-nat.h"
/* Shorthand for some register numbers used below. */
#define MIPS_PC_REGNUM MIPS_EMBED_PC_REGNUM
#define MIPS_FP0_REGNUM MIPS_EMBED_FP0_REGNUM
#define MIPS_FSR_REGNUM MIPS_EMBED_FP0_REGNUM + 32
/* Supply the general-purpose registers stored in GREGS to REGCACHE. */
static void
mips64obsd_supply_gregset (struct regcache *regcache, const void *gregs)
{
const char *regs = gregs;
int regnum;
for (regnum = MIPS_ZERO_REGNUM; regnum <= MIPS_PC_REGNUM; regnum++)
regcache_raw_supply (regcache, regnum, regs + regnum * 8);
for (regnum = MIPS_FP0_REGNUM; regnum <= MIPS_FSR_REGNUM; regnum++)
regcache_raw_supply (regcache, regnum, regs + (regnum + 2) * 8);
}
/* Collect the general-purpose registers from REGCACHE and store them
in GREGS. */
static void
mips64obsd_collect_gregset (const struct regcache *regcache,
void *gregs, int regnum)
{
char *regs = gregs;
int i;
for (i = MIPS_ZERO_REGNUM; i <= MIPS_PC_REGNUM; i++)
{
if (regnum == -1 || regnum == i)
regcache_raw_collect (regcache, i, regs + i * 8);
}
for (i = MIPS_FP0_REGNUM; i <= MIPS_FSR_REGNUM; i++)
{
if (regnum == -1 || regnum == i)
regcache_raw_collect (regcache, i, regs + (i + 2) * 8);
}
}
/* Fetch register REGNUM from the inferior. If REGNUM is -1, do this
for all registers. */
static void
mips64obsd_fetch_inferior_registers (int regnum)
{
struct reg regs;
int pid;
/* Cater for systems like OpenBSD, that implement threads as
separate processes. */
pid = ptid_get_lwp (inferior_ptid);
if (pid == 0)
pid = ptid_get_pid (inferior_ptid);
if (ptrace (PT_GETREGS, pid, (PTRACE_TYPE_ARG3) ®s, 0) == -1)
perror_with_name ("Couldn't get registers");
mips64obsd_supply_gregset (current_regcache, ®s);
}
/* Store register REGNUM back into the inferior. If REGNUM is -1, do
this for all registers. */
static void
mips64obsd_store_inferior_registers (int regnum)
{
struct reg regs;
int pid;
/* Cater for systems like OpenBSD, that implement threads as
separate processes. */
pid = ptid_get_lwp (inferior_ptid);
if (pid == 0)
pid = ptid_get_pid (inferior_ptid);
if (ptrace (PT_GETREGS, pid, (PTRACE_TYPE_ARG3) ®s, 0) == -1)
perror_with_name ("Couldn't get registers");
mips64obsd_collect_gregset (current_regcache, ®s, regnum);
if (ptrace (PT_SETREGS, pid, (PTRACE_TYPE_ARG3) ®s, 0) == -1)
perror_with_name ("Couldn't write registers");
}
/* Provide a prototype to silence -Wmissing-prototypes. */
void _initialize_mips64obsd_nat (void);
void
_initialize_mips64obsd_nat (void)
{
struct target_ops *t;
t = inf_ptrace_target ();
t->to_fetch_registers = mips64obsd_fetch_inferior_registers;
t->to_store_registers = mips64obsd_store_inferior_registers;
t->to_pid_to_str = obsd_pid_to_str;
t->to_find_new_threads = obsd_find_new_threads;
add_target (t);
}
|
