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
|
"""Show bitfields and check that they display correctly."""
import lldb
from lldbsuite.test.decorators import *
from lldbsuite.test.lldbtest import *
from lldbsuite.test import lldbutil
class CppBitfieldsTestCase(TestBase):
@no_debug_info_test
def test_bitfields(self):
self.build()
lldbutil.run_to_source_breakpoint(
self, "// break here", lldb.SBFileSpec("main.cpp", False)
)
# Accessing LargeBitsA.
self.expect_expr(
"lba",
result_children=[
ValueCheck(name="", type="int:32"),
ValueCheck(name="a", type="unsigned int:20", value="2"),
],
)
self.expect_expr("lba.a", result_type="unsigned int", result_value="2")
# Accessing LargeBitsB.
self.expect_expr(
"lbb",
result_children=[
ValueCheck(name="a", type="unsigned int:1", value="1"),
ValueCheck(name="", type="int:31"),
ValueCheck(name="b", type="unsigned int:20", value="3"),
],
)
self.expect_expr("lbb.b", result_type="unsigned int", result_value="3")
# Accessing LargeBitsC.
self.expect_expr(
"lbc",
result_children=[
ValueCheck(name="", type="int:22"),
ValueCheck(name="a", type="unsigned int:1", value="1"),
ValueCheck(name="b", type="unsigned int:1", value="0"),
ValueCheck(name="c", type="unsigned int:5", value="4"),
ValueCheck(name="d", type="unsigned int:1", value="1"),
ValueCheck(name="", type="int:2"),
ValueCheck(name="e", type="unsigned int:20", value="20"),
],
)
self.expect_expr("lbc.c", result_type="unsigned int", result_value="4")
# Accessing LargeBitsD.
self.expect_expr(
"lbd",
result_children=[
ValueCheck(name="arr", type="char[3]", summary='"ab"'),
ValueCheck(name="", type="int:32"),
ValueCheck(name="a", type="unsigned int:20", value="5"),
],
)
self.expect_expr("lbd.a", result_type="unsigned int", result_value="5")
# Test BitfieldsInStructInUnion.
# FIXME: This needs some more explanation for what it's actually testing.
nested_struct_children = [
ValueCheck(name="", type="int:22"),
ValueCheck(name="a", type="uint64_t:1", value="1"),
ValueCheck(name="b", type="uint64_t:1", value="0"),
ValueCheck(name="c", type="uint64_t:1", value="1"),
ValueCheck(name="d", type="uint64_t:1", value="0"),
ValueCheck(name="e", type="uint64_t:1", value="1"),
ValueCheck(name="f", type="uint64_t:1", value="0"),
ValueCheck(name="g", type="uint64_t:1", value="1"),
ValueCheck(name="h", type="uint64_t:1", value="0"),
ValueCheck(name="i", type="uint64_t:1", value="1"),
ValueCheck(name="j", type="uint64_t:1", value="0"),
ValueCheck(name="k", type="uint64_t:1", value="1"),
]
self.expect_expr(
"bitfields_in_struct_in_union",
result_type="BitfieldsInStructInUnion",
result_children=[
ValueCheck(
name="",
children=[ValueCheck(name="f", children=nested_struct_children)],
)
],
)
self.expect_expr(
"bitfields_in_struct_in_union.f.a", result_type="uint64_t", result_value="1"
)
# Unions with bitfields.
self.expect_expr(
"uwbf",
result_type="UnionWithBitfields",
result_children=[
ValueCheck(name="a", value="255"),
ValueCheck(name="b", value="65535"),
ValueCheck(name="c", value="4294967295"),
ValueCheck(name="x", value="4294967295"),
],
)
self.expect_expr(
"uwubf",
result_type="UnionWithUnnamedBitfield",
result_children=[
ValueCheck(name="a", value="16777215"),
ValueCheck(name="x", value="4294967295"),
],
)
# Class with a base class and a bitfield.
self.expect_expr(
"derived",
result_type="Derived",
result_children=[
ValueCheck(
name="Base",
children=[ValueCheck(name="b_a", value="2", type="uint32_t")],
),
ValueCheck(name="d_a", value="1", type="uint32_t:1"),
],
)
# Struct with bool bitfields.
self.expect_expr(
"bb",
result_type="",
result_children=[
ValueCheck(name="a", value="true", type="bool:1"),
ValueCheck(name="b", value="false", type="bool:1"),
ValueCheck(name="c", value="true", type="bool:2"),
ValueCheck(name="d", value="true", type="bool:2"),
],
)
bb = self.frame().FindVariable("bb")
self.assertSuccess(bb.GetError())
bb_a = bb.GetChildAtIndex(0)
self.assertSuccess(bb_a.GetError())
self.assertEqual(bb_a.GetValueAsUnsigned(), 1)
self.assertEqual(bb_a.GetValueAsSigned(), 1)
bb_b = bb.GetChildAtIndex(1)
self.assertSuccess(bb_b.GetError())
self.assertEqual(bb_b.GetValueAsUnsigned(), 0)
self.assertEqual(bb_b.GetValueAsSigned(), 0)
bb_c = bb.GetChildAtIndex(2)
self.assertSuccess(bb_c.GetError())
self.assertEqual(bb_c.GetValueAsUnsigned(), 1)
self.assertEqual(bb_c.GetValueAsSigned(), 1)
bb_d = bb.GetChildAtIndex(3)
self.assertSuccess(bb_d.GetError())
self.assertEqual(bb_d.GetValueAsUnsigned(), 1)
self.assertEqual(bb_d.GetValueAsSigned(), 1)
# Test a class with a base class that has a vtable ptr. The derived
# class has bitfields.
base_with_vtable_children = [
ValueCheck(name="a", type="unsigned int:4", value="5"),
ValueCheck(name="b", type="unsigned int:4", value="0"),
ValueCheck(name="c", type="unsigned int:4", value="5"),
]
self.expect_expr("base_with_vtable", result_children=base_with_vtable_children)
self.expect_var_path("base_with_vtable", children=base_with_vtable_children)
@no_debug_info_test
def test_bitfield_behind_vtable_ptr(self):
self.build()
lldbutil.run_to_source_breakpoint(
self, "// break here", lldb.SBFileSpec("main.cpp", False)
)
# Test a class with a vtable ptr and bitfields.
with_vtable_children = [
ValueCheck(name="a", type="unsigned int:4", value="5"),
ValueCheck(name="b", type="unsigned int:4", value="0"),
ValueCheck(name="c", type="unsigned int:4", value="5"),
]
self.expect_expr("with_vtable", result_children=with_vtable_children)
self.expect_var_path("with_vtable", children=with_vtable_children)
# Test a class with a vtable ptr and unnamed bitfield directly after.
with_vtable_and_unnamed_children = [
ValueCheck(name="", type="int:4", value="0"),
ValueCheck(name="b", type="unsigned int:4", value="0"),
ValueCheck(name="c", type="unsigned int:4", value="5"),
]
self.expect_expr(
"with_vtable_and_unnamed", result_children=with_vtable_and_unnamed_children
)
self.expect_var_path(
"with_vtable_and_unnamed", children=with_vtable_and_unnamed_children
)
derived_with_vtable_children = [
ValueCheck(
name="Base",
children=[ValueCheck(name="b_a", value="2", type="uint32_t")],
),
ValueCheck(name="a", value="1", type="unsigned int:1"),
]
self.expect_expr(
"derived_with_vtable", result_children=derived_with_vtable_children
)
self.expect_var_path(
"derived_with_vtable", children=derived_with_vtable_children
)
|
