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
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
|
/* HP/UX native interface for HP 300's, for GDB when running under Unix.
Copyright 1986, 1987, 1989, 1991, 1992, 1993 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 "frame.h"
#include "inferior.h"
/* Defining this means some system include files define some extra stuff. */
#define WOPR
#include <sys/param.h>
#include <signal.h>
#include <sys/user.h>
#include <fcntl.h>
#include <sys/ptrace.h>
#include <sys/reg.h>
#include <sys/trap.h>
#include <sys/file.h>
static void fetch_inferior_register (int, unsigned int);
static void store_inferior_register_1 (int, unsigned int, int);
static void store_inferior_register (int, unsigned int);
/* Get kernel_u_addr using HPUX-style nlist(). */
CORE_ADDR kernel_u_addr;
struct hpnlist
{
char *n_name;
long n_value;
unsigned char n_type;
unsigned char n_length;
short n_almod;
short n_unused;
};
static struct hpnlist nl[] =
{
{"_u", -1,},
{(char *) 0,}};
/* read the value of the u area from the hp-ux kernel */
void
_initialize_hp300ux_nat (void)
{
#ifndef HPUX_VERSION_5
nlist ("/hp-ux", nl);
kernel_u_addr = nl[0].n_value;
#else /* HPUX version 5. */
kernel_u_addr = (CORE_ADDR) 0x0097900;
#endif
}
#define INFERIOR_AR0(u) \
((ptrace \
(PT_RUAREA, inferior_pid, \
(PTRACE_ARG3_TYPE) ((char *) &u.u_ar0 - (char *) &u), 0, 0)) \
- kernel_u_addr)
static void
fetch_inferior_register (register int regno, register unsigned int regaddr)
{
#ifndef HPUX_VERSION_5
if (regno == PS_REGNUM)
{
union
{
int i;
short s[2];
}
ps_val;
int regval;
ps_val.i = (ptrace (PT_RUAREA, inferior_pid, (PTRACE_ARG3_TYPE) regaddr,
0, 0));
regval = ps_val.s[0];
supply_register (regno, (char *) ®val);
}
else
#endif /* not HPUX_VERSION_5 */
{
char buf[MAX_REGISTER_RAW_SIZE];
register int i;
for (i = 0; i < REGISTER_RAW_SIZE (regno); i += sizeof (int))
{
*(int *) &buf[i] = ptrace (PT_RUAREA, inferior_pid,
(PTRACE_ARG3_TYPE) regaddr, 0, 0);
regaddr += sizeof (int);
}
supply_register (regno, buf);
}
return;
}
static void
store_inferior_register_1 (int regno, unsigned int regaddr, int val)
{
errno = 0;
ptrace (PT_WUAREA, inferior_pid, (PTRACE_ARG3_TYPE) regaddr, val, 0);
#if 0
/* HP-UX randomly sets errno to non-zero for regno == 25.
However, the value is correctly written, so ignore errno. */
if (errno != 0)
{
char string_buf[64];
sprintf (string_buf, "writing register number %d", regno);
perror_with_name (string_buf);
}
#endif
return;
}
static void
store_inferior_register (register int regno, register unsigned int regaddr)
{
#ifndef HPUX_VERSION_5
if (regno == PS_REGNUM)
{
union
{
int i;
short s[2];
}
ps_val;
ps_val.i = (ptrace (PT_RUAREA, inferior_pid, (PTRACE_ARG3_TYPE) regaddr,
0, 0));
ps_val.s[0] = (read_register (regno));
store_inferior_register_1 (regno, regaddr, ps_val.i);
}
else
#endif /* not HPUX_VERSION_5 */
{
register int i;
for (i = 0; i < REGISTER_RAW_SIZE (regno); i += sizeof (int))
{
store_inferior_register_1
(regno, regaddr,
(*(int *) ®isters[(REGISTER_BYTE (regno)) + i]));
regaddr += sizeof (int);
}
}
return;
}
void
fetch_inferior_registers (int regno)
{
struct user u;
register unsigned int ar0_offset;
ar0_offset = (INFERIOR_AR0 (u));
if (regno == -1)
{
for (regno = 0; (regno < FP0_REGNUM); regno++)
fetch_inferior_register (regno, (REGISTER_ADDR (ar0_offset, regno)));
for (; (regno < NUM_REGS); regno++)
fetch_inferior_register (regno, (FP_REGISTER_ADDR (u, regno)));
}
else
fetch_inferior_register (regno,
(regno < FP0_REGNUM
? REGISTER_ADDR (ar0_offset, regno)
: FP_REGISTER_ADDR (u, regno)));
}
/* Store our register values back into the inferior.
If REGNO is -1, do this for all registers.
Otherwise, REGNO specifies which register (so we can save time). */
void
store_inferior_registers (register int regno)
{
struct user u;
register unsigned int ar0_offset;
if (regno >= FP0_REGNUM)
{
store_inferior_register (regno, (FP_REGISTER_ADDR (u, regno)));
return;
}
ar0_offset = (INFERIOR_AR0 (u));
if (regno >= 0)
{
store_inferior_register (regno, (REGISTER_ADDR (ar0_offset, regno)));
return;
}
for (regno = 0; (regno < FP0_REGNUM); regno++)
store_inferior_register (regno, (REGISTER_ADDR (ar0_offset, regno)));
for (; (regno < NUM_REGS); regno++)
store_inferior_register (regno, (FP_REGISTER_ADDR (u, regno)));
return;
}
int
getpagesize (void)
{
return 4096;
}
|
