1 # This testcase is part of GDB, the GNU debugger.
3 # Copyright 2015-2023 Free Software Foundation, Inc.
5 # This program is free software; you can redistribute it and/or modify
6 # it under the terms of the GNU General Public License as published by
7 # the Free Software Foundation; either version 3 of the License, or
8 # (at your option) any later version.
10 # This program is distributed in the hope that it will be useful,
11 # but WITHOUT ANY WARRANTY; without even the implied warranty of
12 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 # GNU General Public License for more details.
15 # You should have received a copy of the GNU General Public License
16 # along with this program. If not, see <http://www.gnu.org/licenses/>.
18 if { [skip_btrace_tests] } {
19 unsupported "target does not support record-btrace"
24 if {[gdb_compile_pthreads "$srcdir/$subdir/$srcfile" "$binfile" executable {debug}] != "" } {
25 untested "failed to prepare"
29 save_vars { GDBFLAGS } {
30 append GDBFLAGS " -ex \"set non-stop on\""
31 clean_restart $testfile
39 set bp_1 [gdb_get_line_number "bp.1" $srcfile]
40 set bp_2 [gdb_get_line_number "bp.2" $srcfile]
41 set bp_3 [gdb_get_line_number "bp.3" $srcfile]
46 # get the line number containing most of the trace
47 set loop [gdb_get_line_number "loop" $srcfile]
49 # a stop on the above line as reported by GDB
50 set loop_line "$loop\[^\\\r\\\n\]*/\\\* loop \\\*/"
52 # make sure $line matches the full expected output per thread.
53 # and let's hope that GDB never mixes the output from different threads.
54 proc gdb_cont_to { threads cmd line nthreads } {
56 set full_cmd "thread apply $threads $cmd"
58 # consume the prompt. since we started the command in the background,
59 # the prompt precedes any further output except some errors.
60 gdb_test_multiple "$full_cmd &" "$full_cmd: prompt" {
66 # now check for the expected line - one per thread.
67 for {set i 0} {$i < $nthreads} {incr i} {
68 gdb_test_multiple "" "$full_cmd: thread $i" {
69 -re "$line\[^\\\r\\\n\]*\r\n" {
76 proc gdb_cont_to_bp_line { line threads nthreads } {
77 gdb_cont_to $threads "continue" \
79 "Breakpoint\[^\\\r\\\n\]*$line" \
85 proc gdb_cont_to_no_history { threads cmd nthreads } {
86 gdb_cont_to $threads $cmd \
88 "No more reverse-execution history\." \
95 # trace the code between the two breakpoints
96 with_test_prefix "prepare" {
97 gdb_cont_to_bp_line "$srcfile:$bp_1" all 2
99 with_test_prefix "record" {
100 gdb_test_no_output "record btrace"
101 gdb_cont_to_bp_line "$srcfile:$bp_2" all 2
104 # we don't need those breakpoints any longer.
105 # they will only disturb our stepping.
108 # show the threads - this is useful for debugging fails
109 gdb_test "thread apply all info rec" ".*"
110 gdb_test "info threads" ".*"
112 with_test_prefix "navigate" {
113 gdb_test "thread apply 1 record goto 3" "$loop_line"
114 gdb_test "thread apply 2 record goto 4" "$loop_line"
115 gdb_test "thread apply 1 info record" \
116 ".*Replay in progress\. At instruction 3\." "thread 1 at insn 3"
117 gdb_test "thread apply 2 info record" \
118 ".*Replay in progress\. At instruction 4\." "thread 2 at insn 4"
120 gdb_test "thread apply all record goto 5" "$loop_line"
121 gdb_test "thread apply 1 info record" \
122 ".*Replay in progress\. At instruction 5\." "thread 1 at insn 5"
123 gdb_test "thread apply 2 info record" \
124 ".*Replay in progress\. At instruction 5\." "thread 2 at insn 5"
127 with_test_prefix "step" {
128 with_test_prefix "thread 1" {
129 gdb_test "thread apply 1 stepi 2" "$loop_line"
130 gdb_test "thread apply 1 info record" \
131 ".*Replay in progress\. At instruction 7\."
132 gdb_test "thread apply 2 info record" \
133 ".*Replay in progress\. At instruction 5\."
136 with_test_prefix "thread 2" {
137 gdb_test "thread apply 2 stepi 3" "$loop_line"
138 gdb_test "thread apply 1 info record" \
139 ".*Replay in progress\. At instruction 7\."
140 gdb_test "thread apply 2 info record" \
141 ".*Replay in progress\. At instruction 8\."
144 with_test_prefix "all" {
145 gdb_cont_to all "stepi 4" "$loop_line" 2
146 gdb_test "thread apply 1 info record" \
147 ".*Replay in progress\. At instruction 11\."
148 gdb_test "thread apply 2 info record" \
149 ".*Replay in progress\. At instruction 12\."
153 with_test_prefix "reverse-step" {
154 with_test_prefix "thread 1" {
155 gdb_test "thread apply 1 reverse-stepi 2" "$loop_line"
156 gdb_test "thread apply 1 info record" \
157 ".*Replay in progress\. At instruction 9\."
158 gdb_test "thread apply 2 info record" \
159 ".*Replay in progress\. At instruction 12\."
162 with_test_prefix "thread 2" {
163 gdb_test "thread apply 2 reverse-stepi 3" "$loop_line"
164 gdb_test "thread apply 1 info record" \
165 ".*Replay in progress\. At instruction 9\."
166 gdb_test "thread apply 2 info record" \
167 ".*Replay in progress\. At instruction 9\."
170 with_test_prefix "all" {
171 gdb_cont_to all "reverse-stepi 4" "$loop_line" 2
172 gdb_test "thread apply 1 info record" \
173 ".*Replay in progress\. At instruction 5\."
174 gdb_test "thread apply 2 info record" \
175 ".*Replay in progress\. At instruction 5\."
179 with_test_prefix "continue" {
180 with_test_prefix "thread 1" {
181 with_test_prefix "continue" {
182 gdb_cont_to_no_history 1 "continue" 1
183 gdb_test "thread apply 1 info record" \
184 ".*Recorded \[0-9\]+ instructions \[^\\\r\\\n\]*"
185 gdb_test "thread apply 2 info record" \
186 ".*Replay in progress\. At instruction 5\."
188 with_test_prefix "reverse-continue" {
189 gdb_cont_to_no_history 1 "reverse-continue" 1
190 gdb_test "thread apply 1 info record" \
191 ".*Replay in progress\. At instruction 1\."
192 gdb_test "thread apply 2 info record" \
193 ".*Replay in progress\. At instruction 5\."
197 with_test_prefix "thread 2" {
198 with_test_prefix "continue" {
199 gdb_cont_to_no_history 2 "continue" 1
200 gdb_test "thread apply 1 info record" \
201 ".*Replay in progress\. At instruction 1\."
202 gdb_test "thread apply 2 info record" \
203 ".*Recorded \[0-9\]+ instructions \[^\\\r\\\n\]*"
205 with_test_prefix "reverse-continue" {
206 gdb_cont_to_no_history 2 "reverse-continue" 1
207 gdb_test "thread apply 1 info record" \
208 ".*Replay in progress\. At instruction 1\."
209 gdb_test "thread apply 2 info record" \
210 ".*Replay in progress\. At instruction 1\."
215 # a thread may only resume if no thread is still replaying
216 with_test_prefix "no progress" {
217 with_test_prefix "thread 1" {
218 gdb_test "thread apply 1 record goto end" ".*"
219 gdb_test "thread apply 2 record goto begin" ".*"
221 gdb_cont_to_no_history 1 "continue" 1
222 gdb_cont_to_no_history 1 "step" 1
223 gdb_test "thread apply 1 info record" \
224 ".*Recorded \[0-9\]+ instructions \[^\\\r\\\n\]*"
225 gdb_test "thread apply 2 info record" \
226 ".*Replay in progress\. At instruction 1\."
229 with_test_prefix "thread 2" {
230 gdb_test "thread apply 1 record goto begin" ".*"
231 gdb_test "thread apply 2 record goto end" ".*"
233 gdb_cont_to_no_history 2 "continue" 1
234 gdb_cont_to_no_history 2 "step" 1
235 gdb_test "thread apply 1 info record" \
236 ".*Replay in progress\. At instruction 1\."
237 gdb_test "thread apply 2 info record" \
238 ".*Recorded \[0-9\]+ instructions \[^\\\r\\\n\]*"
241 with_test_prefix "all" {
242 gdb_test "thread apply all record goto begin" ".*"
244 gdb_cont_to_no_history all "continue" 2
245 gdb_test "thread apply 1 info record" \
246 ".*Recorded \[0-9\]+ instructions \[^\\\r\\\n\]*"
247 gdb_test "thread apply 2 info record" \
248 ".*Recorded \[0-9\]+ instructions \[^\\\r\\\n\]*"
252 # now that both threads stopped replaying we may resume recording
253 with_test_prefix "cont to end" {
255 gdb_cont_to_bp_line "$srcfile:$bp_3" all 1