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4c38e0a4 | 1 | # Copyright 1998, 2007, 2008, 2009, 2010 Free Software Foundation, Inc. |
c906108c SS |
2 | |
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 | |
e22f8b7c | 5 | # the Free Software Foundation; either version 3 of the License, or |
c906108c | 6 | # (at your option) any later version. |
e22f8b7c | 7 | # |
c906108c SS |
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. | |
e22f8b7c | 12 | # |
c906108c | 13 | # You should have received a copy of the GNU General Public License |
e22f8b7c | 14 | # along with this program. If not, see <http://www.gnu.org/licenses/>. |
c906108c | 15 | |
c906108c SS |
16 | load_lib "trace-support.exp" |
17 | ||
18 | if $tracelevel then { | |
19 | strace $tracelevel | |
20 | } | |
21 | ||
c906108c SS |
22 | |
23 | set testfile "circ" | |
24 | set srcfile ${testfile}.c | |
25 | set binfile $objdir/$subdir/$testfile | |
26 | ||
27 | if { [gdb_compile "$srcdir/$subdir/$srcfile" $binfile \ | |
fc91c6c2 | 28 | executable {debug nowarnings}] != "" } { |
b60f0898 JB |
29 | untested circ.exp |
30 | return -1 | |
c906108c SS |
31 | } |
32 | ||
33 | # Tests: | |
34 | # 1) Set up a trace experiment that will collect approximately 10 frames, | |
35 | # requiring more than 512 but less than 1024 bytes of cache buffer. | |
36 | # (most targets should have at least 1024 bytes of cache buffer!) | |
37 | # Run and confirm that it collects all 10 frames. | |
38 | # 2) Artificially limit the trace buffer to 512 bytes, and rerun the | |
39 | # experiment. Confirm that the first several frames are collected, | |
40 | # but that the last several are not. | |
41 | # 3) Set trace buffer to circular mode, still with the artificial limit | |
42 | # of 512 bytes, and rerun the experiment. Confirm that the last | |
43 | # several frames are collected, but the first several are not. | |
44 | # | |
45 | ||
46 | # return 0 for success, 1 for failure | |
47 | proc run_trace_experiment { pass } { | |
48 | gdb_run_cmd | |
49 | ||
50 | if [gdb_test "tstart" \ | |
51 | "\[\r\n\]*" \ | |
52 | "start trace experiment, pass $pass"] then { return 1; } | |
53 | if [gdb_test "continue" \ | |
54 | "Continuing.*Breakpoint \[0-9\]+, end.*" \ | |
55 | "run to end, pass $pass"] then { return 1; } | |
56 | if [gdb_test "tstop" \ | |
57 | "\[\r\n\]*" \ | |
58 | "stop trace experiment, pass $pass"] then { return 1; } | |
59 | return 0; | |
60 | } | |
61 | ||
62 | # return 0 for success, 1 for failure | |
63 | proc set_a_tracepoint { func } { | |
64 | if [gdb_test "trace $func" \ | |
65 | "Tracepoint \[0-9\]+ at .*" \ | |
66 | "set tracepoint at $func"] then { | |
67 | return 1; | |
68 | } | |
69 | if [gdb_trace_setactions "set actions for $func" \ | |
70 | "" \ | |
71 | "collect testload" "^$"] then { | |
72 | return 1; | |
73 | } | |
74 | return 0; | |
75 | } | |
76 | ||
77 | # return 0 for success, 1 for failure | |
78 | proc setup_tracepoints { } { | |
79 | gdb_delete_tracepoints | |
80 | if [set_a_tracepoint func0] then { return 1; } | |
81 | if [set_a_tracepoint func1] then { return 1; } | |
82 | if [set_a_tracepoint func2] then { return 1; } | |
83 | if [set_a_tracepoint func3] then { return 1; } | |
84 | if [set_a_tracepoint func4] then { return 1; } | |
85 | if [set_a_tracepoint func5] then { return 1; } | |
86 | if [set_a_tracepoint func6] then { return 1; } | |
87 | if [set_a_tracepoint func7] then { return 1; } | |
88 | if [set_a_tracepoint func8] then { return 1; } | |
89 | if [set_a_tracepoint func9] then { return 1; } | |
90 | return 0; | |
91 | } | |
92 | ||
93 | # return 0 for success, 1 for failure | |
94 | proc trace_buffer_normal { } { | |
95 | if [gdb_test "maint packet QTBuffer:size:ffffffff" \ | |
96 | "received: .OK." ""] then { | |
97 | pass "This test cannot be run on this target" | |
98 | return 1; | |
99 | } | |
100 | if [gdb_test "maint packet QTBuffer:circular:0" \ | |
101 | "received: .OK." ""] then { | |
102 | pass "This test cannot be run on this target" | |
103 | return 1; | |
104 | } | |
105 | return 0; | |
106 | } | |
107 | ||
108 | # return 0 for success, 1 for failure | |
109 | proc gdb_trace_circular_tests { } { | |
110 | ||
111 | # We generously give ourselves one "pass" if we successfully | |
112 | # detect that this test cannot be run on this target! | |
113 | if { ![gdb_target_supports_trace] } then { | |
0ef2251b | 114 | pass "Current target does not support trace" |
c906108c SS |
115 | return 1; |
116 | } | |
117 | ||
118 | if [trace_buffer_normal] then { return 1; } | |
119 | ||
de7ff789 MS |
120 | gdb_test "break begin" ".*" "" |
121 | gdb_test "break end" ".*" "" | |
122 | gdb_test "tstop" ".*" "" | |
123 | gdb_test "tfind none" ".*" "" | |
c906108c SS |
124 | |
125 | if [setup_tracepoints] then { return 1; } | |
126 | ||
127 | # First, run the trace experiment with default attributes: | |
128 | # Make sure it behaves as expected. | |
129 | if [run_trace_experiment 1] then { return 1; } | |
130 | if [gdb_test "tfind start" \ | |
131 | "#0 func0 .*" \ | |
132 | "find frame zero, pass 1"] then { return 1; } | |
133 | ||
134 | if [gdb_test "tfind 9" \ | |
135 | "#0 func9 .*" \ | |
136 | "find frame nine, pass 1"] then { return 1; } | |
137 | ||
138 | if [gdb_test "tfind none" \ | |
139 | "#0 end .*" \ | |
140 | "quit trace debugging, pass 1"] then { return 1; } | |
141 | ||
142 | # Then, shrink the trace buffer so that it will not hold | |
143 | # all ten trace frames. Verify that frame zero is still | |
144 | # collected, but frame nine is not. | |
145 | if [gdb_test "maint packet QTBuffer:size:200" \ | |
146 | "received: .OK." "shrink the target trace buffer"] then { | |
147 | return 1; | |
148 | } | |
149 | if [run_trace_experiment 2] then { return 1; } | |
150 | if [gdb_test "tfind start" \ | |
151 | "#0 func0 .*" \ | |
152 | "find frame zero, pass 2"] then { return 1; } | |
153 | ||
154 | if [gdb_test "tfind 9" \ | |
155 | ".* failed to find .*" \ | |
156 | "fail to find frame nine, pass 2"] then { return 1; } | |
157 | ||
158 | if [gdb_test "tfind none" \ | |
159 | "#0 end .*" \ | |
160 | "quit trace debugging, pass 2"] then { return 1; } | |
161 | ||
162 | # Finally, make the buffer circular. Now when it runs out of | |
163 | # space, it should wrap around and overwrite the earliest frames. | |
164 | # This means that: | |
165 | # 1) frame zero will be overwritten and therefore unavailable | |
166 | # 2) the earliest frame in the buffer will be other-than-zero | |
167 | # 3) frame nine will be available (unlike on pass 2). | |
168 | if [gdb_test "maint packet QTBuffer:circular:1" \ | |
169 | "received: .OK." "make the target trace buffer circular"] then { | |
170 | return 1; | |
171 | } | |
172 | if [run_trace_experiment 3] then { return 1; } | |
173 | if [gdb_test "tfind start" \ | |
174 | "#0 func\[1-9\] .*" \ | |
175 | "first frame is NOT frame zero, pass 3"] then { return 1; } | |
176 | ||
177 | if [gdb_test "tfind 9" \ | |
178 | "#0 func9 .*" \ | |
179 | "find frame nine, pass 3"] then { return 1; } | |
180 | ||
181 | if [gdb_test "tfind none" \ | |
182 | "#0 end .*" \ | |
183 | "quit trace debugging, pass 3"] then { return 1; } | |
184 | ||
185 | return 0; | |
186 | } | |
187 | ||
188 | # Start with a fresh gdb. | |
189 | ||
190 | gdb_exit | |
191 | gdb_start | |
192 | gdb_reinitialize_dir $srcdir/$subdir | |
193 | gdb_load $binfile | |
194 | ||
195 | if [target_info exists gdb_stub] { | |
196 | gdb_step_for_stub; | |
197 | } | |
4daf5ac0 | 198 | |
e68d8fd4 MS |
199 | gdb_test_no_output "set circular-trace-buffer on" \ |
200 | "set circular-trace-buffer on" | |
4daf5ac0 SS |
201 | |
202 | gdb_test "show circular-trace-buffer" "Target's use of circular trace buffer is on." "show circular-trace-buffer (on)" | |
203 | ||
e68d8fd4 MS |
204 | gdb_test_no_output "set circular-trace-buffer off" \ |
205 | "set circular-trace-buffer off" | |
4daf5ac0 SS |
206 | |
207 | gdb_test "show circular-trace-buffer" "Target's use of circular trace buffer is off." "show circular-trace-buffer (off)" | |
208 | ||
c906108c SS |
209 | # Body of test encased in a proc so we can return prematurely. |
210 | if { ![gdb_trace_circular_tests] } then { | |
211 | # Set trace buffer attributes back to normal | |
212 | trace_buffer_normal; | |
213 | } | |
214 | ||
215 | # Finished! | |
de7ff789 | 216 | gdb_test "tfind none" ".*" "" |