1 # Copyright 2012-2015 Free Software Foundation, Inc.
3 # This program is free software; you can redistribute it and/or modify
4 # it under the terms of the GNU General Public License as published by
5 # the Free Software Foundation; either version 3 of the License, or
6 # (at your option) any later version.
8 # This program is distributed in the hope that it will be useful,
9 # but WITHOUT ANY WARRANTY; without even the implied warranty of
10 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
11 # GNU General Public License for more details.
13 # You should have received a copy of the GNU General Public License
14 # along with this program. If not, see <http://www.gnu.org/licenses/>.
16 # Test case for forgotten hw-watchpoints after fork()-off of a process.
18 set testfile watchpoint-fork
20 if [is_remote target] {
21 kfail "remote/13584" "gdbserver does not support debugging across fork"
25 proc test {type symbol} {
26 with_test_prefix "$type" {
27 global testfile subdir srcdir gdb_prompt
29 set srcfile_type ${srcdir}/${subdir}/${testfile}-${type}.c
33 with_test_prefix "singlethreaded" {
34 set executable ${testfile}-${type}-st
35 set srcfile_main ${testfile}-st.c
36 if {[build_executable $testfile.exp $executable \
37 [list $srcfile_main ${testfile}-${type}.c] \
38 [list debug additional_flags=-D$symbol]] == -1} {
42 clean_restart $executable
44 if [target_info exists gdb,no_hardware_watchpoints] {
45 # The software watchpoint functionality is in GDB an unrelated test.
46 gdb_test_no_output "set can-use-hw-watchpoints 0"
49 gdb_test "show detach-on-fork" "Whether gdb will detach the child of a fork is on\\."
50 gdb_test_no_output "set follow-fork-mode $type"
51 gdb_test "show follow-fork-mode" "Debugger response to a program call of fork or vfork is \"$type\"\\."
52 # Testcase uses it for the `follow-fork-mode child' type.
53 gdb_test "handle SIGUSR1 nostop noprint pass" "No\[ \t\]+No\[ \t\]+Yes.*"
59 gdb_test "watch var" "atchpoint \[0-9\]+: var" "Set the watchpoint"
61 # It is never hit but it should not be left over in the fork()ed-off child.
62 if [skip_hw_breakpoint_tests] {
67 gdb_test "$hbreak marker"
69 gdb_breakpoint "mark_exit"
72 "reakpoint \[0-9\]+, marker.*" "hardware breakpoints work"
74 "atchpoint \[0-9\]+: var.*Old value = 0.*New value = 1.*forkoff *\\(1\\).*" "watchpoints work"
76 "reakpoint \[0-9\]+, marker.*" "breakpoint after the first fork"
78 "atchpoint \[0-9\]+: var.*Old value = 1.*New value = 2.*forkoff *\\(2\\).*" "watchpoint after the first fork"
80 "reakpoint \[0-9\]+, marker.*" "breakpoint after the second fork"
82 "atchpoint \[0-9\]+: var.*Old value = 2.*New value = 3.*mark_exit \\(\\);" "watchpoint after the second fork"
83 gdb_test "continue" "Continuing\\..*\r\nBreakpoint \[0-9\]+, mark_exit .*" "finish"
88 if [target_info exists gdb,no_hardware_watchpoints] {
89 # Watchpoint hits would get detected in unexpected threads.
93 with_test_prefix "multithreaded" {
94 set executable ${testfile}-${type}-mt
95 set srcfile_main ${srcdir}/${subdir}/${testfile}-mt.c
96 if { [gdb_compile_pthreads "${srcfile_main} ${srcfile_type}" [standard_output_file ${executable}] executable [list debug "additional_flags=-D$symbol -DTHREAD"]] != "" } {
97 untested ${testfile}.exp
100 clean_restart $executable
102 gdb_test_no_output "set follow-fork-mode $type"
103 # Testcase uses it for the `follow-fork-mode child' type.
104 gdb_test "handle SIGUSR1 nostop noprint pass" "No\[ \t\]+No\[ \t\]+Yes.*"
110 gdb_test "watch var" "atchpoint \[0-9\]+: var" "Set the watchpoint"
112 # It should not be left over in the fork()ed-off child.
113 gdb_test "$hbreak marker" {reakpoint [0-9]+.*}
115 gdb_breakpoint "mark_exit"
117 gdb_test "continue" \
118 "reakpoint \[0-9\]+, marker.*" "hardware breakpoints work"
119 gdb_test "continue" \
120 "atchpoint \[0-9\]+: var.*Old value = 0.*New value = 1.*validity-first.*" "singlethread watchpoints work"
121 gdb_test "continue" \
122 "atchpoint \[0-9\]+: var.*Old value = 1.*New value = 2.*validity-thread-A.*" "multithreaded watchpoints work at A"
123 gdb_test "continue" \
124 "atchpoint \[0-9\]+: var.*Old value = 2.*New value = 3.*validity-thread-B.*" "multithreaded watchpoints work at B"
125 gdb_test "continue" \
126 "reakpoint \[0-9\]+, marker.*" "breakpoint (A) after the first fork"
127 gdb_test "continue" \
128 "atchpoint \[0-9\]+: var.*Old value = 3.*New value = 4.*after-fork1-A.*" "watchpoint A after the first fork"
129 gdb_test "continue" \
130 "atchpoint \[0-9\]+: var.*Old value = 4.*New value = 5.*after-fork1-B.*" "watchpoint B after the first fork"
131 gdb_test "continue" \
132 "reakpoint \[0-9\]+, marker.*" "breakpoint (A) after the second fork"
133 gdb_test "continue" \
134 "atchpoint \[0-9\]+: var.*Old value = 5.*New value = 6.*after-fork2-A.*" "watchpoint A after the second fork"
135 gdb_test "continue" \
136 "atchpoint \[0-9\]+: var.*Old value = 6.*New value = 7.*after-fork2-B.*" "watchpoint B after the second fork"
137 gdb_test "continue" "Continuing\\..*\r\nBreakpoint \[0-9\]+, mark_exit .*" "finish"
142 test parent FOLLOW_PARENT
144 # Only GNU/Linux is known to support `set follow-fork-mode child'.
145 if [istarget "*-*-linux*"] {
146 test child FOLLOW_CHILD
148 untested "${testfile}: child"