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5633ea5c JJ |
1 | # This testcase is part of GDB, the GNU debugger. |
2 | ||
3666a048 | 3 | # Copyright 2004-2021 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 | ||
5633ea5c JJ |
20 | |
21 | # This test verifies that a watchpoint is detected in the proper thread | |
22 | # so the test is only meaningful on a system with hardware watchpoints. | |
b800ec70 UW |
23 | if {[skip_hw_watchpoint_multi_tests]} { |
24 | return 0 | |
5633ea5c JJ |
25 | } |
26 | ||
d983da9c DJ |
27 | proc target_no_stopped_data { } { |
28 | return [istarget s390*-*-*] | |
29 | } | |
30 | ||
0efbbabc TT |
31 | standard_testfile |
32 | if {[gdb_compile_pthreads "${srcdir}/${subdir}/${srcfile}" "${binfile}" executable debug] != "" } { | |
5633ea5c JJ |
33 | return -1 |
34 | } | |
35 | ||
36 | gdb_exit | |
37 | gdb_start | |
38 | gdb_reinitialize_dir $srcdir/$subdir | |
39 | gdb_load ${binfile} | |
40 | ||
35ec993f | 41 | gdb_test_no_output "set can-use-hw-watchpoints 1" "" |
5633ea5c JJ |
42 | |
43 | # | |
44 | # Run to `main' where we begin our tests. | |
45 | # | |
46 | ||
47 | if ![runto_main] then { | |
c8ee3f04 PW |
48 | fail "can't run to main" |
49 | return 0 | |
5633ea5c JJ |
50 | } |
51 | ||
52 | set args_0 0 | |
53 | set args_1 0 | |
54 | ||
55 | # Watch values that will be modified by distinct threads. | |
56 | gdb_test "watch args\[0\]" "Hardware watchpoint 2: args\\\[0\\\]" | |
57 | gdb_test "watch args\[1\]" "Hardware watchpoint 3: args\\\[1\\\]" | |
b92b73c2 DE |
58 | set hwwp_2_enabled 1 |
59 | set hwwp_3_enabled 1 | |
5633ea5c | 60 | |
b92b73c2 | 61 | set init_line [gdb_get_line_number "Init value"] |
e1923096 | 62 | set inc_line [gdb_get_line_number "Loop increment"] |
d983da9c DJ |
63 | set main_loc "main \\\(\\\) at .*watchthreads.c:$init_line" |
64 | set thread0_loc "thread_function \\\(arg=0x0\\\) at .*watchthreads.c:$inc_line" | |
65 | set thread1_loc "thread_function \\\(arg=0x1\\\) at .*watchthreads.c:$inc_line" | |
e1923096 | 66 | |
5633ea5c JJ |
67 | # Loop and continue to allow both watchpoints to be triggered. |
68 | for {set i 0} {$i < 30} {incr i} { | |
d983da9c DJ |
69 | set test_flag_0 0 |
70 | set test_flag_1 0 | |
5633ea5c JJ |
71 | set test_flag 0 |
72 | gdb_test_multiple "continue" "threaded watch loop" { | |
d983da9c DJ |
73 | -re "(.*Hardware watchpoint.*)$gdb_prompt $" { |
74 | # At least one hardware watchpoint was hit. Check if both were. | |
75 | set string $expect_out(1,string) | |
76 | ||
77 | 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] { | |
78 | incr args_0 | |
79 | incr test_flag_0 | |
80 | } | |
81 | 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] { | |
82 | incr args_1 | |
83 | incr test_flag_1 | |
84 | } | |
85 | ||
86 | set expected_loc "bogus location" | |
87 | if { $test_flag_0 == 1 && $test_flag_1 == 0 && $args_0 == 1 } { | |
88 | set expected_loc $main_loc | |
89 | } elseif { $test_flag_0 == 0 && $test_flag_1 == 1 && $args_1 == 1 } { | |
90 | set expected_loc $main_loc | |
91 | } elseif { $test_flag_0 == 1 && $test_flag_1 == 0 } { | |
92 | set expected_loc $thread0_loc | |
93 | } elseif { $test_flag_0 == 0 && $test_flag_1 == 1 } { | |
94 | set expected_loc $thread1_loc | |
95 | } elseif { $test_flag_0 + $test_flag_1 == 2 } { | |
96 | # On S/390, or any other system which can not report the | |
97 | # stopped data address, it is OK to report two watchpoints | |
98 | # at once in this test. Make sure the reported location | |
99 | # corresponds to at least one of the watchpoints (and not, | |
100 | # e.g., __nptl_create_event). On other systems, we should | |
101 | # report the two watchpoints serially. | |
102 | if { [target_no_stopped_data] } { | |
103 | set expected_loc "($main_loc|$thread0_loc|$thread1_loc)" | |
104 | } | |
105 | } | |
106 | ||
107 | if [ regexp "$expected_loc" $string ] { | |
108 | set test_flag 1 | |
109 | } else { | |
110 | fail "threaded watch loop" | |
111 | } | |
b92b73c2 DE |
112 | |
113 | # If one of the watchpoints is disabled, we'd better not stop there. | |
114 | if { !$hwwp_2_enabled && $test_flag_0 } { | |
115 | fail "disabled hw watchpoint 2 triggered" | |
116 | } | |
117 | if { !$hwwp_3_enabled && $test_flag_1 } { | |
118 | fail "disabled hw watchpoint 3 triggered" | |
119 | } | |
120 | ||
121 | # If we get to 10 in one of the watched locations disable it so we | |
122 | # see some of the other watched location. | |
123 | # 10 is chosen so we're guaranteed to come through here. | |
124 | if { $hwwp_2_enabled && $hwwp_3_enabled } { | |
125 | if { $args_0 >= 10 && $hwwp_2_enabled } { | |
12b5d08a | 126 | gdb_test_no_output "disable 2" "disable first watchpoint at 10" |
b92b73c2 DE |
127 | set hwwp_2_enabled 0 |
128 | } elseif { $args_1 >= 10 && $hwwp_3_enabled } { | |
12b5d08a | 129 | gdb_test_no_output "disable 3" "disable first watchpoint at 10" |
b92b73c2 DE |
130 | set hwwp_3_enabled 0 |
131 | } | |
132 | } | |
d983da9c | 133 | } |
5633ea5c | 134 | } |
d983da9c | 135 | |
5633ea5c JJ |
136 | # If we fail above, don't bother continuing loop |
137 | if { $test_flag == 0 } { | |
4ec70201 | 138 | set i 30 |
5633ea5c JJ |
139 | } |
140 | } | |
141 | ||
142 | # Print success message if loop succeeded. | |
143 | if { $test_flag == 1 } { | |
144 | pass "threaded watch loop" | |
145 | } | |
146 | ||
147 | # Verify that we hit first watchpoint in main thread. | |
148 | set message "first watchpoint on args\[0\] hit" | |
149 | if { $args_0 > 0 } { | |
150 | pass $message | |
151 | } else { | |
152 | fail $message | |
153 | } | |
154 | ||
155 | # Verify that we hit second watchpoint in main thread. | |
156 | set message "first watchpoint on args\[1\] hit" | |
157 | if { $args_1 > 0 } { | |
158 | pass $message | |
159 | } else { | |
160 | fail $message | |
161 | } | |
162 | ||
163 | # Verify that we hit first watchpoint in child thread. | |
164 | set message "watchpoint on args\[0\] hit in thread" | |
165 | if { $args_0 > 1 } { | |
166 | pass $message | |
167 | } else { | |
168 | fail $message | |
169 | } | |
170 | ||
171 | # Verify that we hit second watchpoint in child thread. | |
172 | set message "watchpoint on args\[1\] hit in thread" | |
173 | if { $args_1 > 1 } { | |
174 | pass $message | |
175 | } else { | |
176 | fail $message | |
177 | } | |
178 | ||
179 | # Verify that all watchpoint hits are accounted for. | |
180 | set message "combination of threaded watchpoints = 30" | |
d983da9c DJ |
181 | if { [target_no_stopped_data] } { |
182 | # See above. If we allow two watchpoints to be hit at once, we | |
183 | # may have more than 30 hits total. | |
184 | set result [expr $args_0 + $args_1 >= 30] | |
185 | } else { | |
186 | set result [expr $args_0 + $args_1 == 30] | |
187 | } | |
188 | if { $result } { | |
5633ea5c JJ |
189 | pass $message |
190 | } else { | |
191 | fail $message | |
192 | } |