1# Copyright 2010-2020 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# Test of trace file support. 17 18# Note that unlike most of the tracing tests, this can be run on 19# targets lacking tracepoint support; the program tfile.c has the 20# ability to generate synthetic trace files directly, and the tfile 21# target is available to all GDB configs. 22 23load_lib "trace-support.exp" 24 25if {![is_remote host] && ![is_remote target]} { 26 set tfile_basic [standard_output_file tfile-basic.tf] 27 set tfile_error [standard_output_file tfile-error.tf] 28 set tfile_dir [file dirname $tfile_basic]/ 29 set purely_local 1 30} else { 31 set tfile_basic tfile-basic.tf 32 set tfile_error tfile-error.tf 33 set tfile_dir "" 34 set purely_local 0 35} 36 37standard_testfile 38if { [gdb_compile "$srcdir/$subdir/$srcfile" $binfile \ 39 executable \ 40 [list debug nopie\ 41 "additional_flags=-DTFILE_DIR=\"$tfile_dir\""]] \ 42 != "" } { 43 untested "failed to compile" 44 return -1 45} 46 47# Make sure we are starting fresh. 48remote_file host delete $tfile_basic 49remote_file host delete $tfile_error 50remote_file target delete $tfile_basic 51remote_file target delete $tfile_error 52 53if { ![generate_tracefile $binfile] } { 54 unsupported "unable to generate trace file" 55 return -1 56} 57 58if {!$purely_local} { 59 # Copy tracefile from target to host through build. 60 remote_download host [remote_upload target tfile-basic.tf] tfile-basic.tf 61 remote_download host [remote_upload target tfile-error.tf] tfile-error.tf 62} 63 64clean_restart $binfile 65 66# Program has presumably exited, now target a trace file it created. 67 68gdb_test "target tfile $tfile_basic" "Created tracepoint.*" \ 69 "target tfile [file tail $tfile_basic]" 70 71gdb_test "info trace" ".*tracepoint.*in write_basic_trace_file.*" \ 72 "info tracepoints on trace file" 73 74gdb_test "tfind 0" \ 75 "Found trace frame 0, tracepoint \[0-9\]+. 76\#0 write_basic_trace_file ().*" \ 77 "tfind 0 on trace file" 78 79# Note that there is no tracepoint collecting these globals, we 80# just happen to know they are covered by the trace frame. 81 82gdb_test "print testglob" " = 31415" "print testglob on trace file" 83 84gdb_test "print testglob2" " = 271828" "print testglob2 on trace file" 85 86# This global is not covered by the trace frame, but since it's const, 87# we should be able to read it from the executable. 88 89gdb_test "print constglob" " = 10000" "print constglob on trace file" 90 91# Similarly, disassembly should find the read-only pieces in the executable. 92gdb_test "disassemble main" \ 93 "Dump of assembler code for function main:.* $hex <\\+0\\>:.*End of assembler dump\." 94 95# This global is also not covered by the trace frame, and since it's 96# non-const, we should _not_ read it from the executable, as that 97# would show the variable's initial value, not the current at time the 98# trace frame was created. 99 100gdb_test "print nonconstglob" \ 101 " = <unavailable>" "print nonconstglob on trace file" 102 103gdb_test "tfind" "Target failed to find requested trace frame." \ 104 "tfind does not find a second frame in trace file" 105 106gdb_test "tstatus" \ 107 "Using a trace file.* 108Trace stopped by a tstop command.* 109Collected 1 trace frame.* 110Trace buffer has 256 bytes of 4096 bytes free \\(93% full\\).* 111Looking at trace frame 0, tracepoint .*" \ 112 "tstatus on trace file" 113 114gdb_test "tfind end" "No longer looking at any trace frame" "leave tfind mode" 115 116gdb_test "backtrace" "No stack\." \ 117 "no stack if no traceframe selected" 118 119gdb_test "info registers" "The program has no registers now\." \ 120 "no registers if no traceframe selected" 121 122# Now start afresh, using only a trace file. 123 124gdb_exit 125gdb_start 126 127gdb_load $binfile 128 129gdb_test "target tfile $tfile_error" "Created tracepoint.*" \ 130 "target tfile [file tail $tfile_error]" 131 132gdb_test "tstatus" \ 133 "Using a trace file.* 134Trace stopped by an error \\(made-up error, tracepoint 1\\).* 135Collected 0 trace frame.* 136Trace buffer has 256 bytes of 4096 bytes free \\(93% full\\).* 137Not looking at any trace frame.*" \ 138 "tstatus on error trace file" 139 140# Make sure we can reopen without error. 141gdb_test \ 142 "interpreter-exec mi \"-target-select tfile $tfile_basic\"" \ 143 "\\^connected.*" \ 144 "interpreter-exec mi \"-target-select tfile tfile-basic.tf\"" 145 146gdb_test "interpreter-exec mi \"-trace-status\"" \ 147 "\\^done,supported=\"file\",trace-file=\".*$tfile_basic\",running=\"0\",stop-reason=\"request\",frames=\"${decimal}\",frames-created=\"${decimal}\",buffer-size=\"${decimal}\",buffer-free=\"${decimal}\",disconnected=\".*\",circular=\".*\",user-name=\"\",notes=\"\",start-time=\".*\",stop-time=\".*\"" \ 148 "-trace-status" 149 150# Test completion works well. 151 152if { [readline_is_used] } { 153 gdb_test "target tfile [file rootname $tfile_basic]\t" \ 154 "Assuming tracepoint.*" \ 155 "complete-command 'target tfile'" 156} 157