Commit | Line | Data |
---|---|---|
618f726f | 1 | # Copyright 1998-2016 Free Software Foundation, Inc. |
9779ab84 PA |
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 | ||
5b362f04 | 25 | if {[prepare_for_testing "failed to prepare" $testfile $srcfile debug]} { |
9779ab84 PA |
26 | return -1 |
27 | } | |
28 | clean_restart $testfile | |
29 | ||
30 | if ![runto_main] { | |
bc6c7af4 | 31 | fail "can't run to main to check for trace support" |
9779ab84 PA |
32 | return -1 |
33 | } | |
34 | ||
35 | # Check whether we're testing with the remote or extended-remote | |
36 | # targets, and whether the target supports tracepoints. | |
37 | ||
9779ab84 PA |
38 | if ![gdb_is_target_remote] { |
39 | return -1 | |
40 | } | |
41 | ||
42 | if ![gdb_target_supports_trace] { | |
bc6c7af4 | 43 | unsupported "current target does not support trace" |
4ec70201 | 44 | return -1 |
9779ab84 PA |
45 | } |
46 | ||
47 | # Run a trace session, stop it, and then inspect the resulting trace | |
48 | # frame (IOW, returns while tfind mode is active). | |
49 | proc prepare_for_trace_disassembly { } { | |
50 | global gdb_prompt | |
51 | gdb_breakpoint "end" | |
52 | ||
53 | gdb_test "trace subr" "Tracepoint .*" \ | |
54 | "tracepoint at subr" | |
55 | ||
56 | gdb_trace_setactions "define action" \ | |
57 | "" \ | |
58 | "collect parm" "^$" | |
59 | ||
60 | gdb_test_no_output "tstart" | |
61 | ||
62 | gdb_test "continue" ".*Breakpoint \[0-9\]+, end .*" \ | |
63 | "advance through tracing" | |
64 | ||
65 | gdb_test "tstatus" ".*Collected 1 trace frame.*" \ | |
66 | "collected 1 trace frame" | |
67 | ||
68 | gdb_test_no_output "tstop" | |
69 | ||
70 | gdb_tfind_test "tfind start" "start" "0" | |
71 | } | |
72 | ||
73 | clean_restart $testfile | |
74 | runto_main | |
75 | ||
76 | # Trace once, issuing a tstatus, so that GDB tries | |
77 | # qXfer:trace-frame-info:read. | |
78 | prepare_for_trace_disassembly | |
79 | ||
80 | # Now check whether the packet is supported. | |
81 | set traceframe_info_supported -1 | |
82 | set test "probe for traceframe-info support" | |
83 | gdb_test_multiple "show remote traceframe-info-packet" $test { | |
84 | -re ".*Support for .* is auto-detected, currently (\[a-z\]*).*$gdb_prompt $" { | |
85 | set status $expect_out(1,string) | |
86 | ||
87 | if { $status == "enabled" } { | |
88 | set traceframe_info_supported 1 | |
89 | } else { | |
90 | set traceframe_info_supported 0 | |
91 | } | |
92 | ||
93 | pass $test | |
94 | } | |
95 | } | |
96 | if { $traceframe_info_supported == -1 } { | |
97 | return -1 | |
98 | } | |
99 | ||
100 | # Check whether we're testing with our own GDBserver. | |
0a46d518 | 101 | set is_gdbserver [target_is_gdbserver] |
9779ab84 PA |
102 | if { $is_gdbserver == -1 } { |
103 | return -1 | |
104 | } | |
105 | ||
106 | # Now disassemble (IOW, read from read-only memory) while inspecting a | |
107 | # trace frame, twice. Once with qXfer:traceframe-info:read left to | |
108 | # auto, and once with it disabled, exercising the QTro fallback path | |
109 | # in the stub side. | |
110 | foreach tfinfo { auto off } { | |
111 | with_test_prefix "qXfer:traceframe-info:read $tfinfo" { | |
112 | ||
113 | clean_restart $testfile | |
114 | runto_main | |
115 | gdb_test_no_output "set remote traceframe-info-packet $tfinfo" | |
116 | ||
117 | prepare_for_trace_disassembly | |
118 | ||
119 | set test "trace disassembly" | |
120 | gdb_test_multiple "disassemble subr" $test { | |
121 | -re "<(\.\[0-9\]+|)>:.*End of assembler dump.*$gdb_prompt $" { | |
122 | pass $test | |
123 | } | |
124 | -re "Cannot access memory.*$gdb_prompt $" { | |
125 | if { $traceframe_info_supported == 0 } { | |
126 | # If qXfer:traceframe-info:read is not supported, | |
127 | # then there should be QTro support. | |
128 | fail $test | |
129 | } elseif { $tfinfo == off && $is_gdbserver == 1 } { | |
130 | # We we're testing with GDBserver, we know both | |
131 | # qXfer:traceframe-info:read and QTro are | |
132 | # supported (although supporting the former only | |
133 | # would be sufficient), so issue a FAIL instead of | |
134 | # UNSUPPORTED, giving us better visibility of QTro | |
135 | # regressions. | |
136 | fail $test | |
137 | } else { | |
138 | # Otherwise, qXfer:traceframe-info:read is | |
139 | # supported, making QTro optional, so this isn't | |
140 | # really a failure. | |
141 | unsupported "$test (no QTro support)" | |
142 | } | |
143 | } | |
144 | } | |
145 | } | |
146 | } |