| # This testcase is part of GDB, the GNU debugger. |
| |
| # Copyright 2004, 2007, 2008, 2009, 2010 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/>. |
| |
| # Check that GDB can support multiple watchpoints across threads. |
| |
| if $tracelevel { |
| strace $tracelevel |
| } |
| |
| |
| # This test verifies that a watchpoint is detected in the proper thread |
| # so the test is only meaningful on a system with hardware watchpoints. |
| if [target_info exists gdb,no_hardware_watchpoints] { |
| return 0; |
| } |
| |
| proc target_no_stopped_data { } { |
| return [istarget s390*-*-*] |
| } |
| |
| set testfile "watchthreads" |
| set srcfile ${testfile}.c |
| set binfile ${objdir}/${subdir}/${testfile} |
| if {[gdb_compile_pthreads "${srcdir}/${subdir}/${srcfile}" "${binfile}" executable [list debug "incdir=${objdir}"]] != "" } { |
| return -1 |
| } |
| |
| gdb_exit |
| gdb_start |
| gdb_reinitialize_dir $srcdir/$subdir |
| gdb_load ${binfile} |
| |
| gdb_test_no_output "set can-use-hw-watchpoints 1" "" |
| |
| # |
| # Run to `main' where we begin our tests. |
| # |
| |
| if ![runto_main] then { |
| gdb_suppress_tests |
| } |
| |
| set args_0 0 |
| set args_1 0 |
| |
| # Watch values that will be modified by distinct threads. |
| gdb_test "watch args\[0\]" "Hardware watchpoint 2: args\\\[0\\\]" |
| gdb_test "watch args\[1\]" "Hardware watchpoint 3: args\\\[1\\\]" |
| set hwwp_2_enabled 1 |
| set hwwp_3_enabled 1 |
| |
| set init_line [gdb_get_line_number "Init value"] |
| set inc_line [gdb_get_line_number "Loop increment"] |
| set main_loc "main \\\(\\\) at .*watchthreads.c:$init_line" |
| set thread0_loc "thread_function \\\(arg=0x0\\\) at .*watchthreads.c:$inc_line" |
| set thread1_loc "thread_function \\\(arg=0x1\\\) at .*watchthreads.c:$inc_line" |
| |
| # Loop and continue to allow both watchpoints to be triggered. |
| for {set i 0} {$i < 30} {incr i} { |
| set test_flag_0 0 |
| set test_flag_1 0 |
| set test_flag 0 |
| gdb_test_multiple "continue" "threaded watch loop" { |
| -re "(.*Hardware watchpoint.*)$gdb_prompt $" { |
| # At least one hardware watchpoint was hit. Check if both were. |
| set string $expect_out(1,string) |
| |
| if [regexp "Hardware watchpoint 2: args\\\[0\\\]\[^\r\]*\r\[^\r\]*\r\[^\r\]*Old value = $args_0\[^\r\]*\r\[^\r\]*New value = [expr $args_0+1]\r" $string] { |
| incr args_0 |
| incr test_flag_0 |
| } |
| if [regexp "Hardware watchpoint 3: args\\\[1\\\]\[^\r\]*\r\[^\r\]*\r\[^\r\]*Old value = $args_1\[^\r\]*\r\[^\r\]*New value = [expr $args_1+1]\r" $string] { |
| incr args_1 |
| incr test_flag_1 |
| } |
| |
| set expected_loc "bogus location" |
| if { $test_flag_0 == 1 && $test_flag_1 == 0 && $args_0 == 1 } { |
| set expected_loc $main_loc |
| } elseif { $test_flag_0 == 0 && $test_flag_1 == 1 && $args_1 == 1 } { |
| set expected_loc $main_loc |
| } elseif { $test_flag_0 == 1 && $test_flag_1 == 0 } { |
| set expected_loc $thread0_loc |
| } elseif { $test_flag_0 == 0 && $test_flag_1 == 1 } { |
| set expected_loc $thread1_loc |
| } elseif { $test_flag_0 + $test_flag_1 == 2 } { |
| # On S/390, or any other system which can not report the |
| # stopped data address, it is OK to report two watchpoints |
| # at once in this test. Make sure the reported location |
| # corresponds to at least one of the watchpoints (and not, |
| # e.g., __nptl_create_event). On other systems, we should |
| # report the two watchpoints serially. |
| if { [target_no_stopped_data] } { |
| set expected_loc "($main_loc|$thread0_loc|$thread1_loc)" |
| } |
| } |
| |
| if [ regexp "$expected_loc" $string ] { |
| set test_flag 1 |
| } else { |
| fail "threaded watch loop" |
| } |
| |
| # If one of the watchpoints is disabled, we'd better not stop there. |
| if { !$hwwp_2_enabled && $test_flag_0 } { |
| fail "disabled hw watchpoint 2 triggered" |
| } |
| if { !$hwwp_3_enabled && $test_flag_1 } { |
| fail "disabled hw watchpoint 3 triggered" |
| } |
| |
| # If we get to 10 in one of the watched locations disable it so we |
| # see some of the other watched location. |
| # 10 is chosen so we're guaranteed to come through here. |
| if { $hwwp_2_enabled && $hwwp_3_enabled } { |
| if { $args_0 >= 10 && $hwwp_2_enabled } { |
| gdb_test_no_output "disable 2" "disable first watchpoint at 10" |
| set hwwp_2_enabled 0 |
| } elseif { $args_1 >= 10 && $hwwp_3_enabled } { |
| gdb_test_no_output "disable 3" "disable first watchpoint at 10" |
| set hwwp_3_enabled 0 |
| } |
| } |
| } |
| } |
| |
| # If we fail above, don't bother continuing loop |
| if { $test_flag == 0 } { |
| set i 30; |
| } |
| } |
| |
| # Print success message if loop succeeded. |
| if { $test_flag == 1 } { |
| pass "threaded watch loop" |
| } |
| |
| # Verify that we hit first watchpoint in main thread. |
| set message "first watchpoint on args\[0\] hit" |
| if { $args_0 > 0 } { |
| pass $message |
| } else { |
| fail $message |
| } |
| |
| # Verify that we hit second watchpoint in main thread. |
| set message "first watchpoint on args\[1\] hit" |
| if { $args_1 > 0 } { |
| pass $message |
| } else { |
| fail $message |
| } |
| |
| # Verify that we hit first watchpoint in child thread. |
| set message "watchpoint on args\[0\] hit in thread" |
| if { $args_0 > 1 } { |
| pass $message |
| } else { |
| fail $message |
| } |
| |
| # Verify that we hit second watchpoint in child thread. |
| set message "watchpoint on args\[1\] hit in thread" |
| if { $args_1 > 1 } { |
| pass $message |
| } else { |
| fail $message |
| } |
| |
| # Verify that all watchpoint hits are accounted for. |
| set message "combination of threaded watchpoints = 30" |
| if { [target_no_stopped_data] } { |
| # See above. If we allow two watchpoints to be hit at once, we |
| # may have more than 30 hits total. |
| set result [expr $args_0 + $args_1 >= 30] |
| } else { |
| set result [expr $args_0 + $args_1 == 30] |
| } |
| if { $result } { |
| pass $message |
| } else { |
| fail $message |
| } |