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9779ab84 PA |
1 | # Copyright 1998-2013 Free Software Foundation, Inc. |
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 | |
5 | # the Free Software Foundation; either version 3 of the License, or | |
6 | # (at your option) any later version. | |
7 | # | |
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. | |
12 | # | |
13 | # You should have received a copy of the GNU General Public License | |
14 | # along with this program. If not, see <http://www.gnu.org/licenses/>. | |
15 | ||
16 | # This test helps making sure QTro support doesn't regress. If the | |
17 | # stub supports the newer qXfer:traceframe-info:read, then the QTro | |
18 | # paths in the stub are never exercised. PR remote/15455 is an | |
19 | # example of a regression that unfortunately went unnoticed for long. | |
20 | ||
21 | load_lib trace-support.exp | |
22 | ||
23 | standard_testfile | |
24 | ||
25 | if {[prepare_for_testing $testfile.exp $testfile $srcfile debug]} { | |
26 | return -1 | |
27 | } | |
28 | clean_restart $testfile | |
29 | ||
30 | if ![runto_main] { | |
31 | fail "Can't run to main to check for trace support" | |
32 | return -1 | |
33 | } | |
34 | ||
35 | # Check whether we're testing with the remote or extended-remote | |
36 | # targets, and whether the target supports tracepoints. | |
37 | ||
38 | proc gdb_is_target_remote { } { | |
39 | global gdb_prompt | |
40 | ||
41 | set test "probe for target remote" | |
42 | gdb_test_multiple "maint print target-stack" $test { | |
43 | -re ".*emote serial target in gdb-specific protocol.*$gdb_prompt $" { | |
44 | pass $test | |
45 | return 1 | |
46 | } | |
47 | -re "$gdb_prompt $" { | |
48 | pass $test | |
49 | } | |
50 | } | |
51 | return 0 | |
52 | } | |
53 | ||
54 | if ![gdb_is_target_remote] { | |
55 | return -1 | |
56 | } | |
57 | ||
58 | if ![gdb_target_supports_trace] { | |
59 | unsupported "Current target does not support trace" | |
4ec70201 | 60 | return -1 |
9779ab84 PA |
61 | } |
62 | ||
63 | # Run a trace session, stop it, and then inspect the resulting trace | |
64 | # frame (IOW, returns while tfind mode is active). | |
65 | proc prepare_for_trace_disassembly { } { | |
66 | global gdb_prompt | |
67 | gdb_breakpoint "end" | |
68 | ||
69 | gdb_test "trace subr" "Tracepoint .*" \ | |
70 | "tracepoint at subr" | |
71 | ||
72 | gdb_trace_setactions "define action" \ | |
73 | "" \ | |
74 | "collect parm" "^$" | |
75 | ||
76 | gdb_test_no_output "tstart" | |
77 | ||
78 | gdb_test "continue" ".*Breakpoint \[0-9\]+, end .*" \ | |
79 | "advance through tracing" | |
80 | ||
81 | gdb_test "tstatus" ".*Collected 1 trace frame.*" \ | |
82 | "collected 1 trace frame" | |
83 | ||
84 | gdb_test_no_output "tstop" | |
85 | ||
86 | gdb_tfind_test "tfind start" "start" "0" | |
87 | } | |
88 | ||
89 | clean_restart $testfile | |
90 | runto_main | |
91 | ||
92 | # Trace once, issuing a tstatus, so that GDB tries | |
93 | # qXfer:trace-frame-info:read. | |
94 | prepare_for_trace_disassembly | |
95 | ||
96 | # Now check whether the packet is supported. | |
97 | set traceframe_info_supported -1 | |
98 | set test "probe for traceframe-info support" | |
99 | gdb_test_multiple "show remote traceframe-info-packet" $test { | |
100 | -re ".*Support for .* is auto-detected, currently (\[a-z\]*).*$gdb_prompt $" { | |
101 | set status $expect_out(1,string) | |
102 | ||
103 | if { $status == "enabled" } { | |
104 | set traceframe_info_supported 1 | |
105 | } else { | |
106 | set traceframe_info_supported 0 | |
107 | } | |
108 | ||
109 | pass $test | |
110 | } | |
111 | } | |
112 | if { $traceframe_info_supported == -1 } { | |
113 | return -1 | |
114 | } | |
115 | ||
116 | # Check whether we're testing with our own GDBserver. | |
117 | set is_gdbserver -1 | |
118 | set test "probe for GDBserver" | |
119 | gdb_test_multiple "monitor help" $test { | |
120 | -re "The following monitor commands are supported.*debug-hw-points.*remote-debug.*GDBserver.*$gdb_prompt $" { | |
121 | set is_gdbserver 1 | |
122 | pass $test | |
123 | } | |
124 | -re "$gdb_prompt $" { | |
125 | set is_gdbserver 0 | |
126 | pass $test | |
127 | } | |
128 | } | |
129 | if { $is_gdbserver == -1 } { | |
130 | return -1 | |
131 | } | |
132 | ||
133 | # Now disassemble (IOW, read from read-only memory) while inspecting a | |
134 | # trace frame, twice. Once with qXfer:traceframe-info:read left to | |
135 | # auto, and once with it disabled, exercising the QTro fallback path | |
136 | # in the stub side. | |
137 | foreach tfinfo { auto off } { | |
138 | with_test_prefix "qXfer:traceframe-info:read $tfinfo" { | |
139 | ||
140 | clean_restart $testfile | |
141 | runto_main | |
142 | gdb_test_no_output "set remote traceframe-info-packet $tfinfo" | |
143 | ||
144 | prepare_for_trace_disassembly | |
145 | ||
146 | set test "trace disassembly" | |
147 | gdb_test_multiple "disassemble subr" $test { | |
148 | -re "<(\.\[0-9\]+|)>:.*End of assembler dump.*$gdb_prompt $" { | |
149 | pass $test | |
150 | } | |
151 | -re "Cannot access memory.*$gdb_prompt $" { | |
152 | if { $traceframe_info_supported == 0 } { | |
153 | # If qXfer:traceframe-info:read is not supported, | |
154 | # then there should be QTro support. | |
155 | fail $test | |
156 | } elseif { $tfinfo == off && $is_gdbserver == 1 } { | |
157 | # We we're testing with GDBserver, we know both | |
158 | # qXfer:traceframe-info:read and QTro are | |
159 | # supported (although supporting the former only | |
160 | # would be sufficient), so issue a FAIL instead of | |
161 | # UNSUPPORTED, giving us better visibility of QTro | |
162 | # regressions. | |
163 | fail $test | |
164 | } else { | |
165 | # Otherwise, qXfer:traceframe-info:read is | |
166 | # supported, making QTro optional, so this isn't | |
167 | # really a failure. | |
168 | unsupported "$test (no QTro support)" | |
169 | } | |
170 | } | |
171 | } | |
172 | } | |
173 | } |