blob: c70434e3d03d407d171eb1477dbbc88648548b58 (
plain)
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
|
# This testcase is part of GDB, the GNU debugger.
#
# Copyright 2013-2018 Free Software Foundation, Inc.
#
# Contributed by Intel Corp. <markus.t.metzger@intel.com>
#
# 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/>.
if { [skip_btrace_tests] } {
unsupported "target does not support record-btrace"
return -1
}
# This test is stepping on instruction level. To guarantee that we always
# get the same execution trace, we use an assembly source file.
#
# We use different assembly sources based on the target architecture.
#
# Luckily, they are similar enough that a single test script can handle
# both.
if [info exists COMPILE] {
# make check RUNTESTFLAGS="gdb.btrace/stepi.exp COMPILE=1"
standard_testfile record_goto.c
lappend opts debug
} elseif {[istarget "i?86-*-*"] || [istarget "x86_64-*-*"]} {
if {[is_amd64_regs_target]} {
standard_testfile x86_64-record_goto.S
} else {
standard_testfile i686-record_goto.S
}
} else {
unsupported "target architecture not supported"
return -1
}
if [prepare_for_testing "failed to prepare" $testfile $srcfile] {
return -1
}
if ![runto_main] {
untested "failed to run to main"
return -1
}
global gdb_prompt
proc check_replay_at { insn } {
gdb_test "info record" [multi_line \
"Active record target: record-btrace" \
".*" \
"Recorded 40 instructions in 16 functions \\\(0 gaps\\\) for .*" \
"Replay in progress\. At instruction $insn\." \
]
}
# trace the call to the test function
gdb_test_no_output "record btrace"
gdb_test "next"
# we start with stepping to make sure that the trace is fetched automatically
gdb_test "reverse-stepi" ".*fun4\.5.*"
gdb_test "reverse-stepi" ".*fun4\.5.*"
# let's check where we are in the trace
with_test_prefix "reverse-stepi to 39" { check_replay_at 39 }
# let's step forward and check again
gdb_test "stepi" ".*fun4\.5.*"
with_test_prefix "stepi to 40" { check_replay_at 40 }
# with the next step, we stop replaying
gdb_test "stepi" ".*main\.3.*"
gdb_test "info record" [multi_line \
"Active record target: record-btrace" \
".*" \
"Recorded 40 instructions in 16 functions \\\(0 gaps\\\) for \[^\\\r\\\n\]*" \
] "stepi to live"
# let's try nexti
gdb_test "reverse-nexti" ".*main\.2.*"
with_test_prefix "reverse-nexti - 1" { check_replay_at 1 }
# we can't reverse-nexti any further
gdb_test "reverse-nexti" "No more reverse-execution history\.\r\n.*main\.2.*"
with_test_prefix "reverse-nexti - 1" { check_replay_at 1 }
# but we can step back again
gdb_test "nexti" ".*main\.3.*" "next, 1.5"
gdb_test "info record" [multi_line \
"Active record target: record-btrace" \
".*" \
"Recorded 40 instructions in 16 functions \\\(0 gaps\\\) for \[^\\\r\\\n\]*" \
] "nexti back"
# let's step from a goto position somewhere in the middle
gdb_test "record goto 22" ".*fun3\.2.*"
with_test_prefix "goto 22" { check_replay_at 22 }
gdb_test "stepi" ".*fun1\.1.*"
with_test_prefix "stepi to 23" { check_replay_at 23 }
gdb_test "reverse-stepi" ".*fun3\.2.*"
with_test_prefix "reverse-stepi to 22" { check_replay_at 22 }
gdb_test "nexti" ".*fun3\.3.*"
with_test_prefix "nexti to 27" { check_replay_at 27 }
gdb_test "reverse-nexti" ".*fun3\.2.*"
with_test_prefix "reverse-nexti to 22" { check_replay_at 22 }
# let's try to step off the left end
gdb_test "record goto begin" ".*main\.2.*"
with_test_prefix "goto begin" { check_replay_at 1 }
gdb_test "reverse-stepi" "No more reverse-execution history\.\r\n.*main\.2.*"
gdb_test "reverse-stepi" "No more reverse-execution history\.\r\n.*main\.2.*"
with_test_prefix "reverse-stepi at begin" { check_replay_at 1 }
gdb_test "reverse-nexti" "No more reverse-execution history\.\r\n.*main\.2.*"
gdb_test "reverse-nexti" "No more reverse-execution history\.\r\n.*main\.2.*"
with_test_prefix "reverse-nexti at begin" { check_replay_at 1 }
# we can step forward, though
gdb_test "stepi" ".*fun4\.1.*"
with_test_prefix "stepi to 2" { check_replay_at 2 }
# let's try to step off the left end again
gdb_test "reverse-stepi" ".*main\.2.*"
gdb_test "reverse-stepi" "No more reverse-execution history\.\r\n.*main\.2.*"
gdb_test "reverse-stepi" "No more reverse-execution history\.\r\n.*main\.2.*"
with_test_prefix "reverse-stepi at begin" { check_replay_at 1 }
|
GitWeb