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5633ea5c JJ |
1 | # This testcase is part of GDB, the GNU debugger. |
2 | ||
7b6bb8da | 3 | # Copyright 2004, 2007, 2008, 2009, 2010, 2011 Free Software Foundation, Inc. |
5633ea5c JJ |
4 | |
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 | |
e22f8b7c | 7 | # the Free Software Foundation; either version 3 of the License, or |
5633ea5c JJ |
8 | # (at your option) any later version. |
9 | # | |
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. | |
14 | # | |
15 | # You should have received a copy of the GNU General Public License | |
e22f8b7c | 16 | # along with this program. If not, see <http://www.gnu.org/licenses/>. |
5633ea5c JJ |
17 | |
18 | # Check that GDB can support multiple watchpoints across threads. | |
19 | ||
20 | if $tracelevel { | |
21 | strace $tracelevel | |
22 | } | |
23 | ||
5633ea5c JJ |
24 | |
25 | # This test verifies that a watchpoint is detected in the proper thread | |
26 | # so the test is only meaningful on a system with hardware watchpoints. | |
27 | if [target_info exists gdb,no_hardware_watchpoints] { | |
28 | return 0; | |
29 | } | |
30 | ||
d983da9c DJ |
31 | proc target_no_stopped_data { } { |
32 | return [istarget s390*-*-*] | |
33 | } | |
34 | ||
e1923096 | 35 | set testfile "watchthreads" |
5633ea5c JJ |
36 | set srcfile ${testfile}.c |
37 | set binfile ${objdir}/${subdir}/${testfile} | |
38 | if {[gdb_compile_pthreads "${srcdir}/${subdir}/${srcfile}" "${binfile}" executable [list debug "incdir=${objdir}"]] != "" } { | |
39 | return -1 | |
40 | } | |
41 | ||
42 | gdb_exit | |
43 | gdb_start | |
44 | gdb_reinitialize_dir $srcdir/$subdir | |
45 | gdb_load ${binfile} | |
46 | ||
35ec993f | 47 | gdb_test_no_output "set can-use-hw-watchpoints 1" "" |
5633ea5c JJ |
48 | |
49 | # | |
50 | # Run to `main' where we begin our tests. | |
51 | # | |
52 | ||
53 | if ![runto_main] then { | |
54 | gdb_suppress_tests | |
55 | } | |
56 | ||
57 | set args_0 0 | |
58 | set args_1 0 | |
59 | ||
60 | # Watch values that will be modified by distinct threads. | |
61 | gdb_test "watch args\[0\]" "Hardware watchpoint 2: args\\\[0\\\]" | |
62 | gdb_test "watch args\[1\]" "Hardware watchpoint 3: args\\\[1\\\]" | |
b92b73c2 DE |
63 | set hwwp_2_enabled 1 |
64 | set hwwp_3_enabled 1 | |
5633ea5c | 65 | |
b92b73c2 | 66 | set init_line [gdb_get_line_number "Init value"] |
e1923096 | 67 | set inc_line [gdb_get_line_number "Loop increment"] |
d983da9c DJ |
68 | set main_loc "main \\\(\\\) at .*watchthreads.c:$init_line" |
69 | set thread0_loc "thread_function \\\(arg=0x0\\\) at .*watchthreads.c:$inc_line" | |
70 | set thread1_loc "thread_function \\\(arg=0x1\\\) at .*watchthreads.c:$inc_line" | |
e1923096 | 71 | |
5633ea5c JJ |
72 | # Loop and continue to allow both watchpoints to be triggered. |
73 | for {set i 0} {$i < 30} {incr i} { | |
d983da9c DJ |
74 | set test_flag_0 0 |
75 | set test_flag_1 0 | |
5633ea5c JJ |
76 | set test_flag 0 |
77 | gdb_test_multiple "continue" "threaded watch loop" { | |
d983da9c DJ |
78 | -re "(.*Hardware watchpoint.*)$gdb_prompt $" { |
79 | # At least one hardware watchpoint was hit. Check if both were. | |
80 | set string $expect_out(1,string) | |
81 | ||
82 | 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] { | |
83 | incr args_0 | |
84 | incr test_flag_0 | |
85 | } | |
86 | 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] { | |
87 | incr args_1 | |
88 | incr test_flag_1 | |
89 | } | |
90 | ||
91 | set expected_loc "bogus location" | |
92 | if { $test_flag_0 == 1 && $test_flag_1 == 0 && $args_0 == 1 } { | |
93 | set expected_loc $main_loc | |
94 | } elseif { $test_flag_0 == 0 && $test_flag_1 == 1 && $args_1 == 1 } { | |
95 | set expected_loc $main_loc | |
96 | } elseif { $test_flag_0 == 1 && $test_flag_1 == 0 } { | |
97 | set expected_loc $thread0_loc | |
98 | } elseif { $test_flag_0 == 0 && $test_flag_1 == 1 } { | |
99 | set expected_loc $thread1_loc | |
100 | } elseif { $test_flag_0 + $test_flag_1 == 2 } { | |
101 | # On S/390, or any other system which can not report the | |
102 | # stopped data address, it is OK to report two watchpoints | |
103 | # at once in this test. Make sure the reported location | |
104 | # corresponds to at least one of the watchpoints (and not, | |
105 | # e.g., __nptl_create_event). On other systems, we should | |
106 | # report the two watchpoints serially. | |
107 | if { [target_no_stopped_data] } { | |
108 | set expected_loc "($main_loc|$thread0_loc|$thread1_loc)" | |
109 | } | |
110 | } | |
111 | ||
112 | if [ regexp "$expected_loc" $string ] { | |
113 | set test_flag 1 | |
114 | } else { | |
115 | fail "threaded watch loop" | |
116 | } | |
b92b73c2 DE |
117 | |
118 | # If one of the watchpoints is disabled, we'd better not stop there. | |
119 | if { !$hwwp_2_enabled && $test_flag_0 } { | |
120 | fail "disabled hw watchpoint 2 triggered" | |
121 | } | |
122 | if { !$hwwp_3_enabled && $test_flag_1 } { | |
123 | fail "disabled hw watchpoint 3 triggered" | |
124 | } | |
125 | ||
126 | # If we get to 10 in one of the watched locations disable it so we | |
127 | # see some of the other watched location. | |
128 | # 10 is chosen so we're guaranteed to come through here. | |
129 | if { $hwwp_2_enabled && $hwwp_3_enabled } { | |
130 | if { $args_0 >= 10 && $hwwp_2_enabled } { | |
12b5d08a | 131 | gdb_test_no_output "disable 2" "disable first watchpoint at 10" |
b92b73c2 DE |
132 | set hwwp_2_enabled 0 |
133 | } elseif { $args_1 >= 10 && $hwwp_3_enabled } { | |
12b5d08a | 134 | gdb_test_no_output "disable 3" "disable first watchpoint at 10" |
b92b73c2 DE |
135 | set hwwp_3_enabled 0 |
136 | } | |
137 | } | |
d983da9c | 138 | } |
5633ea5c | 139 | } |
d983da9c | 140 | |
5633ea5c JJ |
141 | # If we fail above, don't bother continuing loop |
142 | if { $test_flag == 0 } { | |
143 | set i 30; | |
144 | } | |
145 | } | |
146 | ||
147 | # Print success message if loop succeeded. | |
148 | if { $test_flag == 1 } { | |
149 | pass "threaded watch loop" | |
150 | } | |
151 | ||
152 | # Verify that we hit first watchpoint in main thread. | |
153 | set message "first watchpoint on args\[0\] hit" | |
154 | if { $args_0 > 0 } { | |
155 | pass $message | |
156 | } else { | |
157 | fail $message | |
158 | } | |
159 | ||
160 | # Verify that we hit second watchpoint in main thread. | |
161 | set message "first watchpoint on args\[1\] hit" | |
162 | if { $args_1 > 0 } { | |
163 | pass $message | |
164 | } else { | |
165 | fail $message | |
166 | } | |
167 | ||
168 | # Verify that we hit first watchpoint in child thread. | |
169 | set message "watchpoint on args\[0\] hit in thread" | |
170 | if { $args_0 > 1 } { | |
171 | pass $message | |
172 | } else { | |
173 | fail $message | |
174 | } | |
175 | ||
176 | # Verify that we hit second watchpoint in child thread. | |
177 | set message "watchpoint on args\[1\] hit in thread" | |
178 | if { $args_1 > 1 } { | |
179 | pass $message | |
180 | } else { | |
181 | fail $message | |
182 | } | |
183 | ||
184 | # Verify that all watchpoint hits are accounted for. | |
185 | set message "combination of threaded watchpoints = 30" | |
d983da9c DJ |
186 | if { [target_no_stopped_data] } { |
187 | # See above. If we allow two watchpoints to be hit at once, we | |
188 | # may have more than 30 hits total. | |
189 | set result [expr $args_0 + $args_1 >= 30] | |
190 | } else { | |
191 | set result [expr $args_0 + $args_1 == 30] | |
192 | } | |
193 | if { $result } { | |
5633ea5c JJ |
194 | pass $message |
195 | } else { | |
196 | fail $message | |
197 | } |