1 # Copyright 2012 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 global testfile objdir subdir srcdir gdb_prompt
29 set prefix_test $pf_prefix
30 lappend pf_prefix "$type:"
31 set prefix_mt $pf_prefix
33 set srcfile_type ${srcdir}/${subdir}/${testfile}-${type}.c
38 set pf_prefix $prefix_mt
39 lappend pf_prefix "singlethreaded:"
41 set executable ${testfile}-${type}-st
42 set srcfile_main ${srcdir}/${subdir}/${testfile}-st.c
43 if { [gdb_compile "${srcfile_main} ${srcfile_type}" ${objdir}/${subdir}/${executable} executable [list debug additional_flags=-D$symbol]] != "" } {
44 untested ${testfile}.exp
45 set pf_prefix $prefix_test
48 clean_restart $executable
50 if [target_info exists gdb,no_hardware_watchpoints] {
51 # The software watchpoint functionality is in GDB an unrelated test.
52 gdb_test_no_output "set can-use-hw-watchpoints 0"
55 gdb_test "show detach-on-fork" "Whether gdb will detach the child of a fork is on\\."
56 gdb_test_no_output "set follow-fork-mode $type"
57 gdb_test "show follow-fork-mode" "Debugger response to a program call of fork or vfork is \"$type\"\\."
58 # Testcase uses it for the `follow-fork-mode child' type.
59 gdb_test "handle SIGUSR1 nostop noprint pass" "No\[ \t\]+No\[ \t\]+Yes.*"
62 set pf_prefix $prefix_test
66 gdb_test "watch var" "atchpoint \[0-9\]+: var" "Set the watchpoint"
68 # It is never hit but it should not be left over in the fork()ed-off child.
69 if [skip_hw_breakpoint_tests] {
74 gdb_test "$hbreak marker"
76 gdb_breakpoint "mark_exit"
79 "reakpoint \[0-9\]+, marker.*" "hardware breakpoints work"
81 "atchpoint \[0-9\]+: var.*Old value = 0.*New value = 1.*forkoff *\\(1\\).*" "watchpoints work"
83 "reakpoint \[0-9\]+, marker.*" "breakpoint after the first fork"
85 "atchpoint \[0-9\]+: var.*Old value = 1.*New value = 2.*forkoff *\\(2\\).*" "watchpoint after the first fork"
87 "reakpoint \[0-9\]+, marker.*" "breakpoint after the second fork"
89 "atchpoint \[0-9\]+: var.*Old value = 2.*New value = 3.*mark_exit \\(\\);" "watchpoint after the second fork"
90 gdb_test "continue" "Continuing\\..*\r\nBreakpoint \[0-9\]+, mark_exit .*" "finish"
95 if [target_info exists gdb,no_hardware_watchpoints] {
96 # Watchpoint hits would get detected in unexpected threads.
97 set pf_prefix $prefix_test
101 set pf_prefix $prefix_mt
102 lappend pf_prefix "multithreaded:"
104 set executable ${testfile}-${type}-mt
105 set srcfile_main ${srcdir}/${subdir}/${testfile}-mt.c
106 if { [gdb_compile_pthreads "${srcfile_main} ${srcfile_type}" ${objdir}/${subdir}/${executable} executable [list debug "additional_flags=-D$symbol -DTHREAD"]] != "" } {
107 untested ${testfile}.exp
108 set pf_prefix $prefix_test
111 clean_restart $executable
113 gdb_test_no_output "set follow-fork-mode $type"
114 # Testcase uses it for the `follow-fork-mode child' type.
115 gdb_test "handle SIGUSR1 nostop noprint pass" "No\[ \t\]+No\[ \t\]+Yes.*"
118 set pf_prefix $prefix_test
122 gdb_test "watch var" "atchpoint \[0-9\]+: var" "Set the watchpoint"
124 # It should not be left over in the fork()ed-off child.
125 gdb_test "$hbreak marker" {reakpoint [0-9]+.*}
127 gdb_breakpoint "mark_exit"
129 gdb_test "continue" \
130 "reakpoint \[0-9\]+, marker.*" "hardware breakpoints work"
131 gdb_test "continue" \
132 "atchpoint \[0-9\]+: var.*Old value = 0.*New value = 1.*validity-first.*" "singlethread watchpoints work"
133 gdb_test "continue" \
134 "atchpoint \[0-9\]+: var.*Old value = 1.*New value = 2.*validity-thread-A.*" "multithreaded watchpoints work at A"
135 gdb_test "continue" \
136 "atchpoint \[0-9\]+: var.*Old value = 2.*New value = 3.*validity-thread-B.*" "multithreaded watchpoints work at B"
137 gdb_test "continue" \
138 "reakpoint \[0-9\]+, marker.*" "breakpoint (A) after the first fork"
139 gdb_test "continue" \
140 "atchpoint \[0-9\]+: var.*Old value = 3.*New value = 4.*after-fork1-A.*" "watchpoint A after the first fork"
141 gdb_test "continue" \
142 "atchpoint \[0-9\]+: var.*Old value = 4.*New value = 5.*after-fork1-B.*" "watchpoint B after the first fork"
143 gdb_test "continue" \
144 "reakpoint \[0-9\]+, marker.*" "breakpoint (A) after the second fork"
145 gdb_test "continue" \
146 "atchpoint \[0-9\]+: var.*Old value = 5.*New value = 6.*after-fork2-A.*" "watchpoint A after the second fork"
147 gdb_test "continue" \
148 "atchpoint \[0-9\]+: var.*Old value = 6.*New value = 7.*after-fork2-B.*" "watchpoint B after the second fork"
149 gdb_test "continue" "Continuing\\..*\r\nBreakpoint \[0-9\]+, mark_exit .*" "finish"
153 set pf_prefix $prefix_test
156 test parent FOLLOW_PARENT
158 # Only GNU/Linux is known to support `set follow-fork-mode child'.
159 if [istarget "*-*-linux*"] {
160 test child FOLLOW_CHILD
162 untested "${testfile}: child"