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
|
/* Self tests for gdbarch for GDB, the GNU debugger.
Copyright (C) 2017-2018 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"
#if GDB_SELF_TEST
#include "selftest.h"
#include "selftest-arch.h"
#include "inferior.h"
#include "gdbthread.h"
#include "target.h"
#include "target-float.h"
#include "common/def-vector.h"
namespace selftests {
/* Test gdbarch methods register_to_value and value_to_register. */
static void
register_to_value_test (struct gdbarch *gdbarch)
{
const struct builtin_type *builtin = builtin_type (gdbarch);
struct type *types[] =
{
builtin->builtin_void,
builtin->builtin_char,
builtin->builtin_short,
builtin->builtin_int,
builtin->builtin_long,
builtin->builtin_signed_char,
builtin->builtin_unsigned_short,
builtin->builtin_unsigned_int,
builtin->builtin_unsigned_long,
builtin->builtin_float,
builtin->builtin_double,
builtin->builtin_long_double,
builtin->builtin_complex,
builtin->builtin_double_complex,
builtin->builtin_string,
builtin->builtin_bool,
builtin->builtin_long_long,
builtin->builtin_unsigned_long_long,
builtin->builtin_int8,
builtin->builtin_uint8,
builtin->builtin_int16,
builtin->builtin_uint16,
builtin->builtin_int32,
builtin->builtin_uint32,
builtin->builtin_int64,
builtin->builtin_uint64,
builtin->builtin_int128,
builtin->builtin_uint128,
builtin->builtin_char16,
builtin->builtin_char32,
};
/* Error out if debugging something, because we're going to push the
test target, which would pop any existing target. */
if (current_top_target ()->to_stratum >= process_stratum)
error (_("target already pushed"));
/* Create a mock environment. An inferior with a thread, with a
process_stratum target pushed. */
test_target_ops mock_target;
ptid_t mock_ptid (1, 1);
inferior mock_inferior (mock_ptid.pid ());
address_space mock_aspace {};
mock_inferior.gdbarch = gdbarch;
mock_inferior.aspace = &mock_aspace;
thread_info mock_thread (&mock_inferior, mock_ptid);
scoped_restore restore_thread_list
= make_scoped_restore (&thread_list, &mock_thread);
/* Add the mock inferior to the inferior list so that look ups by
target+ptid can find it. */
scoped_restore restore_inferior_list
= make_scoped_restore (&inferior_list);
inferior_list = &mock_inferior;
/* Switch to the mock inferior. */
scoped_restore_current_inferior restore_current_inferior;
set_current_inferior (&mock_inferior);
/* Push the process_stratum target so we can mock accessing
registers. */
push_target (&mock_target);
/* Pop it again on exit (return/exception). */
struct on_exit
{
~on_exit ()
{
pop_all_targets_at_and_above (process_stratum);
}
} pop_targets;
/* Switch to the mock thread. */
scoped_restore restore_inferior_ptid
= make_scoped_restore (&inferior_ptid, mock_ptid);
struct frame_info *frame = get_current_frame ();
const int num_regs = (gdbarch_num_regs (gdbarch)
+ gdbarch_num_pseudo_regs (gdbarch));
/* Test gdbarch methods register_to_value and value_to_register with
different combinations of register numbers and types. */
for (const auto &type : types)
{
for (auto regnum = 0; regnum < num_regs; regnum++)
{
if (gdbarch_convert_register_p (gdbarch, regnum, type))
{
std::vector<gdb_byte> expected (TYPE_LENGTH (type), 0);
if (TYPE_CODE (type) == TYPE_CODE_FLT)
{
/* Generate valid float format. */
target_float_from_string (expected.data (), type, "1.25");
}
else
{
for (auto j = 0; j < expected.size (); j++)
expected[j] = (regnum + j) % 16;
}
gdbarch_value_to_register (gdbarch, frame, regnum, type,
expected.data ());
/* Allocate two bytes more for overflow check. */
std::vector<gdb_byte> buf (TYPE_LENGTH (type) + 2, 0);
int optim, unavail, ok;
/* Set the fingerprint in the last two bytes. */
buf [TYPE_LENGTH (type)]= 'w';
buf [TYPE_LENGTH (type) + 1]= 'l';
ok = gdbarch_register_to_value (gdbarch, frame, regnum, type,
buf.data (), &optim, &unavail);
SELF_CHECK (ok);
SELF_CHECK (!optim);
SELF_CHECK (!unavail);
SELF_CHECK (buf[TYPE_LENGTH (type)] == 'w');
SELF_CHECK (buf[TYPE_LENGTH (type) + 1] == 'l');
for (auto k = 0; k < TYPE_LENGTH(type); k++)
SELF_CHECK (buf[k] == expected[k]);
}
}
}
}
} // namespace selftests
#endif /* GDB_SELF_TEST */
void
_initialize_gdbarch_selftests (void)
{
#if GDB_SELF_TEST
selftests::register_test_foreach_arch ("register_to_value",
selftests::register_to_value_test);
#endif
}
|
