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
|
"""
Test the 'memory read' command.
"""
import lldb
import lldbsuite.test.lldbutil as lldbutil
from lldbsuite.test.decorators import *
from lldbsuite.test.lldbtest import *
class MemoryReadTestCase(TestBase):
mydir = TestBase.compute_mydir(__file__)
def setUp(self):
# Call super's setUp().
TestBase.setUp(self)
# Find the line number to break inside main().
self.line = line_number('main.cpp', '// Set break point at this line.')
def build_run_stop(self):
self.build()
exe = self.getBuildArtifact("a.out")
self.runCmd("file " + exe, CURRENT_EXECUTABLE_SET)
# Break in main() after the variables are assigned values.
lldbutil.run_break_set_by_file_and_line(self,
"main.cpp",
self.line,
num_expected_locations=1,
loc_exact=True)
self.runCmd("run", RUN_SUCCEEDED)
# The stop reason of the thread should be breakpoint.
self.expect("thread list",
STOPPED_DUE_TO_BREAKPOINT,
substrs=['stopped', 'stop reason = breakpoint'])
# The breakpoint should have a hit count of 1.
self.expect("breakpoint list -f",
BREAKPOINT_HIT_ONCE,
substrs=[' resolved, hit count = 1'])
@no_debug_info_test
def test_memory_read(self):
"""Test the 'memory read' command with plain and vector formats."""
self.build_run_stop()
# (lldb) memory read -f d -c 1 `&argc`
# 0x7fff5fbff9a0: 1
self.runCmd("memory read -f d -c 1 `&argc`")
# Find the starting address for variable 'argc' to verify later that the
# '--format uint32_t[] --size 4 --count 4' option increments the address
# correctly.
line = self.res.GetOutput().splitlines()[0]
items = line.split(':')
address = int(items[0], 0)
argc = int(items[1], 0)
self.assertGreater(address, 0)
self.assertEquals(argc, 1)
# (lldb) memory read --format uint32_t[] --size 4 --count 4 `&argc`
# 0x7fff5fbff9a0: {0x00000001}
# 0x7fff5fbff9a4: {0x00000000}
# 0x7fff5fbff9a8: {0x0ec0bf27}
# 0x7fff5fbff9ac: {0x215db505}
self.runCmd(
"memory read --format uint32_t[] --size 4 --count 4 `&argc`")
lines = self.res.GetOutput().splitlines()
for i in range(4):
if i == 0:
# Verify that the printout for argc is correct.
self.assertEqual(
argc, int(lines[i].split(':')[1].strip(' {}'), 0))
addr = int(lines[i].split(':')[0], 0)
# Verify that the printout for addr is incremented correctly.
self.assertEqual(addr, (address + i * 4))
# (lldb) memory read --format char[] --size 7 --count 1 `&my_string`
# 0x7fff5fbff990: {abcdefg}
self.expect(
"memory read --format char[] --size 7 --count 1 `&my_string`",
substrs=['abcdefg'])
# (lldb) memory read --format 'hex float' --size 16 `&argc`
# 0x7fff5fbff5b0: error: unsupported byte size (16) for hex float
# format
self.expect(
"memory read --format 'hex float' --size 16 `&argc`",
substrs=['unsupported byte size (16) for hex float format'])
self.expect(
"memory read --format 'float' --count 1 --size 8 `&my_double`",
substrs=['1234.'])
# (lldb) memory read --format 'float' --count 1 --size 20 `&my_double`
# 0x7fff5fbff598: error: unsupported byte size (20) for float format
self.expect(
"memory read --format 'float' --count 1 --size 20 `&my_double`",
substrs=['unsupported byte size (20) for float format'])
self.expect('memory read --type int --count 5 `&my_ints[0]`',
substrs=['(int) 0x', '2', '4', '6', '8', '10'])
self.expect(
'memory read --type int --count 5 --format hex `&my_ints[0]`',
substrs=[
'(int) 0x',
'0x',
'0a'])
self.expect(
'memory read --type int --count 5 --offset 5 `&my_ints[0]`',
substrs=[
'(int) 0x',
'12',
'14',
'16',
'18',
'20'])
# the gdb format specifier and the size in characters for
# the returned values including the 0x prefix.
variations = [['b', 4], ['h', 6], ['w', 10], ['g', 18]]
for v in variations:
formatter = v[0]
expected_object_length = v[1]
self.runCmd(
"memory read --gdb-format 4%s &my_uint64s" % formatter)
lines = self.res.GetOutput().splitlines()
objects_read = []
for l in lines:
objects_read.extend(l.split(':')[1].split())
# Check that we got back 4 0x0000 etc bytes
for o in objects_read:
self.assertEqual(len(o), expected_object_length)
self.assertEquals(len(objects_read), 4)
@no_debug_info_test
def test_memory_read_file(self):
self.build_run_stop()
res = lldb.SBCommandReturnObject()
self.ci.HandleCommand("memory read -f d -c 1 `&argc`", res)
self.assertTrue(res.Succeeded(), "memory read failed:" + res.GetError())
# Record golden output.
golden_output = res.GetOutput()
memory_read_file = self.getBuildArtifact("memory-read-output")
if configuration.is_reproducer_replay():
memory_read_file = self.getReproducerRemappedPath(memory_read_file)
def check_file_content(expected):
with open(memory_read_file) as f:
lines = f.readlines()
lines = [s.strip() for s in lines]
expected = [s.strip() for s in expected]
self.assertEqual(lines, expected)
# Sanity check.
self.runCmd("memory read -f d -c 1 -o '{}' `&argc`".format(memory_read_file))
check_file_content([golden_output])
# Write some garbage to the file.
with open(memory_read_file, 'w') as f:
f.write("some garbage")
# Make sure the file is truncated when we run the command again.
self.runCmd("memory read -f d -c 1 -o '{}' `&argc`".format(memory_read_file))
check_file_content([golden_output])
# Make sure the file is appended when we run the command with --append-outfile.
self.runCmd(
"memory read -f d -c 1 -o '{}' --append-outfile `&argc`".format(
memory_read_file))
check_file_content([golden_output, golden_output])
|
