+# Copyright 2012 Free Software Foundation, Inc.
+#
+# 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/>.
+
+# Test case for forgotten hw-watchpoints after fork()-off of a process.
+
+set testfile watchpoint-fork
+
+if [is_remote target] {
+ kfail "remote/13584" "gdbserver does not support debugging across fork"
+ return
+}
+
+proc test {type symbol} {
+ global testfile objdir subdir srcdir gdb_prompt
+
+ global pf_prefix
+ set prefix_test $pf_prefix
+ lappend pf_prefix "$type:"
+ set prefix_mt $pf_prefix
+
+ set srcfile_type ${srcdir}/${subdir}/${testfile}-${type}.c
+
+
+ # no threads
+
+ set pf_prefix $prefix_mt
+ lappend pf_prefix "singlethreaded:"
+
+ set executable ${testfile}-${type}-st
+ set srcfile_main ${srcdir}/${subdir}/${testfile}-st.c
+ if { [gdb_compile "${srcfile_main} ${srcfile_type}" ${objdir}/${subdir}/${executable} executable [list debug additional_flags=-D$symbol]] != "" } {
+ untested ${testfile}.exp
+ set pf_prefix $prefix_test
+ return
+ }
+ clean_restart $executable
+
+ if [target_info exists gdb,no_hardware_watchpoints] {
+ # The software watchpoint functionality is in GDB an unrelated test.
+ gdb_test_no_output "set can-use-hw-watchpoints 0"
+ }
+
+ gdb_test "show detach-on-fork" "Whether gdb will detach the child of a fork is on\\."
+ gdb_test_no_output "set follow-fork-mode $type"
+ gdb_test "show follow-fork-mode" "Debugger response to a program call of fork or vfork is \"$type\"\\."
+ # Testcase uses it for the `follow-fork-mode child' type.
+ gdb_test "handle SIGUSR1 nostop noprint pass" "No\[ \t\]+No\[ \t\]+Yes.*"
+
+ if ![runto_main] {
+ set pf_prefix $prefix_test
+ return
+ }
+
+ gdb_test "watch var" "atchpoint \[0-9\]+: var" "Set the watchpoint"
+
+ # It is never hit but it should not be left over in the fork()ed-off child.
+ if [skip_hw_breakpoint_tests] {
+ set hbreak "break"
+ } else {
+ set hbreak "hbreak"
+ }
+ gdb_test "$hbreak marker"
+
+ gdb_breakpoint "mark_exit"
+
+ gdb_test "continue" \
+ "reakpoint \[0-9\]+, marker.*" "hardware breakpoints work"
+ gdb_test "continue" \
+ "atchpoint \[0-9\]+: var.*Old value = 0.*New value = 1.*forkoff *\\(1\\).*" "watchpoints work"
+ gdb_test "continue" \
+ "reakpoint \[0-9\]+, marker.*" "breakpoint after the first fork"
+ gdb_test "continue" \
+ "atchpoint \[0-9\]+: var.*Old value = 1.*New value = 2.*forkoff *\\(2\\).*" "watchpoint after the first fork"
+ gdb_test "continue" \
+ "reakpoint \[0-9\]+, marker.*" "breakpoint after the second fork"
+ gdb_test "continue" \
+ "atchpoint \[0-9\]+: var.*Old value = 2.*New value = 3.*mark_exit \\(\\);" "watchpoint after the second fork"
+ gdb_test "continue" "Continuing\\..*\r\nBreakpoint \[0-9\]+, mark_exit .*" "finish"
+
+
+ # threads
+
+ if [target_info exists gdb,no_hardware_watchpoints] {
+ # Watchpoint hits would get detected in unexpected threads.
+ set pf_prefix $prefix_test
+ return
+ }
+
+ set pf_prefix $prefix_mt
+ lappend pf_prefix "multithreaded:"
+
+ set executable ${testfile}-${type}-mt
+ set srcfile_main ${srcdir}/${subdir}/${testfile}-mt.c
+ if { [gdb_compile_pthreads "${srcfile_main} ${srcfile_type}" ${objdir}/${subdir}/${executable} executable [list debug "additional_flags=-D$symbol -DTHREAD"]] != "" } {
+ untested ${testfile}.exp
+ set pf_prefix $prefix_test
+ return
+ }
+ clean_restart $executable
+
+ gdb_test_no_output "set follow-fork-mode $type"
+ # Testcase uses it for the `follow-fork-mode child' type.
+ gdb_test "handle SIGUSR1 nostop noprint pass" "No\[ \t\]+No\[ \t\]+Yes.*"
+
+ if ![runto_main] {
+ set pf_prefix $prefix_test
+ return
+ }
+
+ gdb_test "watch var" "atchpoint \[0-9\]+: var" "Set the watchpoint"
+
+ # It should not be left over in the fork()ed-off child.
+ gdb_test "$hbreak marker" {reakpoint [0-9]+.*}
+
+ gdb_breakpoint "mark_exit"
+
+ gdb_test "continue" \
+ "reakpoint \[0-9\]+, marker.*" "hardware breakpoints work"
+ gdb_test "continue" \
+ "atchpoint \[0-9\]+: var.*Old value = 0.*New value = 1.*validity-first.*" "singlethread watchpoints work"
+ gdb_test "continue" \
+ "atchpoint \[0-9\]+: var.*Old value = 1.*New value = 2.*validity-thread-A.*" "multithreaded watchpoints work at A"
+ gdb_test "continue" \
+ "atchpoint \[0-9\]+: var.*Old value = 2.*New value = 3.*validity-thread-B.*" "multithreaded watchpoints work at B"
+ gdb_test "continue" \
+ "reakpoint \[0-9\]+, marker.*" "breakpoint (A) after the first fork"
+ gdb_test "continue" \
+ "atchpoint \[0-9\]+: var.*Old value = 3.*New value = 4.*after-fork1-A.*" "watchpoint A after the first fork"
+ gdb_test "continue" \
+ "atchpoint \[0-9\]+: var.*Old value = 4.*New value = 5.*after-fork1-B.*" "watchpoint B after the first fork"
+ gdb_test "continue" \
+ "reakpoint \[0-9\]+, marker.*" "breakpoint (A) after the second fork"
+ gdb_test "continue" \
+ "atchpoint \[0-9\]+: var.*Old value = 5.*New value = 6.*after-fork2-A.*" "watchpoint A after the second fork"
+ gdb_test "continue" \
+ "atchpoint \[0-9\]+: var.*Old value = 6.*New value = 7.*after-fork2-B.*" "watchpoint B after the second fork"
+ gdb_test "continue" "Continuing\\..*\r\nBreakpoint \[0-9\]+, mark_exit .*" "finish"
+
+
+ # cleanup
+ set pf_prefix $prefix_test
+}
+
+test parent FOLLOW_PARENT
+
+# Only GNU/Linux is known to support `set follow-fork-mode child'.
+if [istarget "*-*-linux*"] {
+ test child FOLLOW_CHILD
+} else {
+ untested "${testfile}: child"
+}
projects / external / binutils.git / commitdiff