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
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
|
/* Native-dependent code for OpenBSD/hppa.
Copyright (C) 2004-2018 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 3 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, see <http://www.gnu.org/licenses/>. */
#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 "hppa-tdep.h"
#include "inf-ptrace.h"
#include "obsd-nat.h"
struct hppa_obsd_nat_target final : public obsd_nat_target
{
void fetch_registers (struct regcache *, int) override;
void store_registers (struct regcache *, int) override;
};
static hppa_obsd_nat_target the_hppa_obsd_nat_target;
static int
hppaobsd_gregset_supplies_p (int regnum)
{
return (regnum >= HPPA_R0_REGNUM && regnum <= HPPA_CR27_REGNUM);
}
static int
hppaobsd_fpregset_supplies_p (int regnum)
{
return (regnum >= HPPA_FP0_REGNUM && regnum <= HPPA_FP31R_REGNUM);
}
/* Supply the general-purpose registers stored in GREGS to REGCACHE. */
static void
hppaobsd_supply_gregset (struct regcache *regcache, const void *gregs)
{
gdb_byte zero[4] = { 0 };
const char *regs = gregs;
int regnum;
regcache->raw_supply (HPPA_R0_REGNUM, &zero);
for (regnum = HPPA_R1_REGNUM; regnum <= HPPA_R31_REGNUM; regnum++)
regcache->raw_supply (regnum, regs + regnum * 4);
if (sizeof(struct reg) >= 46 * 4)
{
regcache->raw_supply (HPPA_IPSW_REGNUM, regs);
regcache->raw_supply (HPPA_SAR_REGNUM, regs + 32 * 4);
regcache->raw_supply (HPPA_PCSQ_HEAD_REGNUM, regs + 33 * 4);
regcache->raw_supply (HPPA_PCSQ_TAIL_REGNUM, regs + 34 * 4);
regcache->raw_supply (HPPA_PCOQ_HEAD_REGNUM, regs + 35 * 4);
regcache->raw_supply (HPPA_PCOQ_TAIL_REGNUM, regs + 36 * 4);
regcache->raw_supply (HPPA_SR0_REGNUM, regs + 37 * 4);
regcache->raw_supply (HPPA_SR1_REGNUM, regs + 38 * 4);
regcache->raw_supply (HPPA_SR2_REGNUM, regs + 39 * 4);
regcache->raw_supply (HPPA_SR3_REGNUM, regs + 40 * 4);
regcache->raw_supply (HPPA_SR4_REGNUM, regs + 41 * 4);
regcache->raw_supply (HPPA_SR5_REGNUM, regs + 42 * 4);
regcache->raw_supply (HPPA_SR6_REGNUM, regs + 43 * 4);
regcache->raw_supply (HPPA_SR7_REGNUM, regs + 44 * 4);
regcache->raw_supply (HPPA_CR26_REGNUM, regs + 45 * 4);
regcache->raw_supply (HPPA_CR27_REGNUM, regs + 46 * 4);
}
else
{
regcache->raw_supply (HPPA_SAR_REGNUM, regs);
regcache->raw_supply (HPPA_PCOQ_HEAD_REGNUM, regs + 32 * 4);
regcache->raw_supply (HPPA_PCOQ_TAIL_REGNUM, regs + 33 * 4);
}
}
/* Supply the floating-point registers stored in FPREGS to REGCACHE. */
static void
hppaobsd_supply_fpregset (struct regcache *regcache, const void *fpregs)
{
const char *regs = fpregs;
int regnum;
for (regnum = HPPA_FP0_REGNUM; regnum <= HPPA_FP31R_REGNUM;
regnum += 2, regs += 8)
{
regcache->raw_supply (regnum, regs);
regcache->raw_supply (regnum + 1, regs + 4);
}
}
/* Collect the general-purpose registers from REGCACHE and store them
in GREGS. */
static void
hppaobsd_collect_gregset (const struct regcache *regcache,
void *gregs, int regnum)
{
char *regs = gregs;
int i;
for (i = HPPA_R1_REGNUM; i <= HPPA_R31_REGNUM; i++)
{
if (regnum == -1 || regnum == i)
regcache_raw_collect (regcache, i, regs + i * 4);
}
if (sizeof(struct reg) >= 46 * 4)
{
if (regnum == -1 || regnum == HPPA_IPSW_REGNUM)
regcache_raw_collect (regcache, HPPA_IPSW_REGNUM, regs);
if (regnum == -1 || regnum == HPPA_SAR_REGNUM)
regcache_raw_collect (regcache, HPPA_SAR_REGNUM, regs + 32 * 4);
if (regnum == -1 || regnum == HPPA_PCSQ_HEAD_REGNUM)
regcache_raw_collect (regcache, HPPA_PCSQ_HEAD_REGNUM, regs + 33 * 4);
if (regnum == -1 || regnum == HPPA_PCSQ_TAIL_REGNUM)
regcache_raw_collect (regcache, HPPA_PCSQ_TAIL_REGNUM, regs + 34 * 4);
if (regnum == -1 || regnum == HPPA_PCOQ_HEAD_REGNUM)
regcache_raw_collect (regcache, HPPA_PCOQ_HEAD_REGNUM, regs + 35 * 4);
if (regnum == -1 || regnum == HPPA_PCOQ_TAIL_REGNUM)
regcache_raw_collect (regcache, HPPA_PCOQ_TAIL_REGNUM, regs + 36 * 4);
if (regnum == -1 || regnum == HPPA_SR0_REGNUM)
regcache_raw_collect (regcache, HPPA_SR0_REGNUM, regs + 37 * 4);
if (regnum == -1 || regnum == HPPA_SR1_REGNUM)
regcache_raw_collect (regcache, HPPA_SR1_REGNUM, regs + 38 * 4);
if (regnum == -1 || regnum == HPPA_SR2_REGNUM)
regcache_raw_collect (regcache, HPPA_SR2_REGNUM, regs + 39 * 4);
if (regnum == -1 || regnum == HPPA_SR3_REGNUM)
regcache_raw_collect (regcache, HPPA_SR3_REGNUM, regs + 40 * 4);
if (regnum == -1 || regnum == HPPA_SR4_REGNUM)
regcache_raw_collect (regcache, HPPA_SR4_REGNUM, regs + 41 * 4);
if (regnum == -1 || regnum == HPPA_SR5_REGNUM)
regcache_raw_collect (regcache, HPPA_SR5_REGNUM, regs + 42 * 4);
if (regnum == -1 || regnum == HPPA_SR6_REGNUM)
regcache_raw_collect (regcache, HPPA_SR6_REGNUM, regs + 43 * 4);
if (regnum == -1 || regnum == HPPA_SR7_REGNUM)
regcache_raw_collect (regcache, HPPA_SR7_REGNUM, regs + 44 * 4);
if (regnum == -1 || regnum == HPPA_CR26_REGNUM)
regcache_raw_collect (regcache, HPPA_CR26_REGNUM, regs + 45 * 4);
if (regnum == -1 || regnum == HPPA_CR27_REGNUM)
regcache_raw_collect (regcache, HPPA_CR27_REGNUM, regs + 46 * 4);
}
else
{
if (regnum == -1 || regnum == HPPA_SAR_REGNUM)
regcache_raw_collect (regcache, HPPA_SAR_REGNUM, regs);
if (regnum == -1 || regnum == HPPA_PCOQ_HEAD_REGNUM)
regcache_raw_collect (regcache, HPPA_PCOQ_HEAD_REGNUM, regs + 32 * 4);
if (regnum == -1 || regnum == HPPA_PCOQ_TAIL_REGNUM)
regcache_raw_collect (regcache, HPPA_PCOQ_TAIL_REGNUM, regs + 33 * 4);
}
}
/* Collect the floating-point registers from REGCACHE and store them
in FPREGS. */
static void
hppaobsd_collect_fpregset (struct regcache *regcache,
void *fpregs, int regnum)
{
char *regs = fpregs;
int i;
for (i = HPPA_FP0_REGNUM; i <= HPPA_FP31R_REGNUM; i += 2, regs += 8)
{
if (regnum == -1 || regnum == i || regnum == i + 1)
{
regcache_raw_collect (regcache, i, regs);
regcache_raw_collect (regcache, i + 1, regs + 4);
}
}
}
/* Fetch register REGNUM from the inferior. If REGNUM is -1, do this
for all registers (including the floating-point registers). */
void
hppa_obsd_nat_target::fetch_registers (struct regcache *regcache, int regnum)
{
pid_t pid = ptid_get_pid (regcache->ptid ());
if (regnum == -1 || hppaobsd_gregset_supplies_p (regnum))
{
struct reg regs;
if (ptrace (PT_GETREGS, pid, (PTRACE_TYPE_ARG3) ®s, 0) == -1)
perror_with_name (_("Couldn't get registers"));
hppaobsd_supply_gregset (regcache, ®s);
}
if (regnum == -1 || hppaobsd_fpregset_supplies_p (regnum))
{
struct fpreg fpregs;
if (ptrace (PT_GETFPREGS, pid, (PTRACE_TYPE_ARG3) &fpregs, 0) == -1)
perror_with_name (_("Couldn't get floating point status"));
hppaobsd_supply_fpregset (regcache, &fpregs);
}
}
/* Store register REGNUM back into the inferior. If REGNUM is -1, do
this for all registers (including the floating-point registers). */
void
hppa_obsd_nat_target::store_registers (struct regcache *regcache, int regnum)
{
if (regnum == -1 || hppaobsd_gregset_supplies_p (regnum))
{
struct reg regs;
if (ptrace (PT_GETREGS, pid, (PTRACE_TYPE_ARG3) ®s, 0) == -1)
perror_with_name (_("Couldn't get registers"));
hppaobsd_collect_gregset (regcache, ®s, regnum);
if (ptrace (PT_SETREGS, pid, (PTRACE_TYPE_ARG3) ®s, 0) == -1)
perror_with_name (_("Couldn't write registers"));
}
if (regnum == -1 || hppaobsd_fpregset_supplies_p (regnum))
{
struct fpreg fpregs;
if (ptrace (PT_GETFPREGS, pid, (PTRACE_TYPE_ARG3) &fpregs, 0) == -1)
perror_with_name (_("Couldn't get floating point status"));
hppaobsd_collect_fpregset (regcache, &fpregs, regnum);
if (ptrace (PT_SETFPREGS, pid, (PTRACE_TYPE_ARG3) &fpregs, 0) == -1)
perror_with_name (_("Couldn't write floating point status"));
}
}
void
_initialize_hppaobsd_nat (void)
{
add_inf_child_target (&the_hppa_obsd_nat_target);
}
|
