1 # This testcase is part of GDB, the GNU debugger.
3 # Copyright 2013-2016 Free Software Foundation, Inc.
5 # Contributed by Intel Corp. <markus.t.metzger@intel.com>
7 # This program is free software; you can redistribute it and/or modify
8 # it under the terms of the GNU General Public License as published by
9 # the Free Software Foundation; either version 3 of the License, or
10 # (at your option) any later version.
12 # This program is distributed in the hope that it will be useful,
13 # but WITHOUT ANY WARRANTY; without even the implied warranty of
14 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 # GNU General Public License for more details.
17 # You should have received a copy of the GNU General Public License
18 # along with this program. If not, see <http://www.gnu.org/licenses/>.
20 # check for btrace support
21 if { [skip_btrace_tests] } { return -1 }
23 # This test is stepping on instruction level. To guarantee that we always
24 # get the same execution trace, we use an assembly source file.
26 # We use different assembly sources based on the target architecture.
28 # Luckily, they are similar enough that a single test script can handle
30 if [info exists COMPILE] {
31 # make check RUNTESTFLAGS="gdb.btrace/stepi.exp COMPILE=1"
32 standard_testfile record_goto.c
34 } elseif {[istarget "i?86-*-*"] || [istarget "x86_64-*-*"]} {
35 if {[is_amd64_regs_target]} {
36 standard_testfile x86_64-record_goto.S
38 standard_testfile i686-record_goto.S
41 verbose "Skipping ${testfile}."
46 if [prepare_for_testing "failed to prepare" $testfile $srcfile] {
56 proc check_replay_at { insn } {
57 gdb_test "info record" [multi_line \
58 "Active record target: record-btrace" \
60 "Recorded 40 instructions in 16 functions \\\(0 gaps\\\) for .*" \
61 "Replay in progress\. At instruction $insn\." \
65 # trace the call to the test function
66 gdb_test_no_output "record btrace"
69 # we start with stepping to make sure that the trace is fetched automatically
70 gdb_test "reverse-stepi" ".*fun4\.5.*"
71 gdb_test "reverse-stepi" ".*fun4\.5.*"
73 # let's check where we are in the trace
74 with_test_prefix "reverse-stepi to 39" { check_replay_at 39 }
76 # let's step forward and check again
77 gdb_test "stepi" ".*fun4\.5.*"
78 with_test_prefix "stepi to 40" { check_replay_at 40 }
80 # with the next step, we stop replaying
81 gdb_test "stepi" ".*main\.3.*"
82 gdb_test "info record" [multi_line \
83 "Active record target: record-btrace" \
85 "Recorded 40 instructions in 16 functions \\\(0 gaps\\\) for \[^\\\r\\\n\]*" \
89 gdb_test "reverse-nexti" ".*main\.2.*"
90 with_test_prefix "reverse-nexti - 1" { check_replay_at 1 }
92 # we can't reverse-nexti any further
93 gdb_test "reverse-nexti" "No more reverse-execution history\.\r\n.*main\.2.*"
94 with_test_prefix "reverse-nexti - 1" { check_replay_at 1 }
96 # but we can step back again
97 gdb_test "nexti" ".*main\.3.*" "next, 1.5"
98 gdb_test "info record" [multi_line \
99 "Active record target: record-btrace" \
101 "Recorded 40 instructions in 16 functions \\\(0 gaps\\\) for \[^\\\r\\\n\]*" \
104 # let's step from a goto position somewhere in the middle
105 gdb_test "record goto 22" ".*fun3\.2.*"
106 with_test_prefix "goto 22" { check_replay_at 22 }
108 gdb_test "stepi" ".*fun1\.1.*"
109 with_test_prefix "stepi to 23" { check_replay_at 23 }
111 gdb_test "reverse-stepi" ".*fun3\.2.*"
112 with_test_prefix "reverse-stepi to 22" { check_replay_at 22 }
114 gdb_test "nexti" ".*fun3\.3.*"
115 with_test_prefix "nexti to 27" { check_replay_at 27 }
117 gdb_test "reverse-nexti" ".*fun3\.2.*"
118 with_test_prefix "reverse-nexti to 22" { check_replay_at 22 }
120 # let's try to step off the left end
121 gdb_test "record goto begin" ".*main\.2.*"
122 with_test_prefix "goto begin" { check_replay_at 1 }
124 gdb_test "reverse-stepi" "No more reverse-execution history\.\r\n.*main\.2.*"
125 gdb_test "reverse-stepi" "No more reverse-execution history\.\r\n.*main\.2.*"
126 with_test_prefix "reverse-stepi at begin" { check_replay_at 1 }
128 gdb_test "reverse-nexti" "No more reverse-execution history\.\r\n.*main\.2.*"
129 gdb_test "reverse-nexti" "No more reverse-execution history\.\r\n.*main\.2.*"
130 with_test_prefix "reverse-nexti at begin" { check_replay_at 1 }
132 # we can step forward, though
133 gdb_test "stepi" ".*fun4\.1.*"
134 with_test_prefix "stepi to 2" { check_replay_at 2 }
136 # let's try to step off the left end again
137 gdb_test "reverse-stepi" ".*main\.2.*"
138 gdb_test "reverse-stepi" "No more reverse-execution history\.\r\n.*main\.2.*"
139 gdb_test "reverse-stepi" "No more reverse-execution history\.\r\n.*main\.2.*"
140 with_test_prefix "reverse-stepi at begin" { check_replay_at 1 }