3f1175a995
Make sure we don't fallback to printing the initial value of a non-const variable in the executable. Also make sure we can do 'disassemble', as another test that GDB is able to read read-only parts from the executable (the existing test of printing constglob also covers that case). gdb/testsuite/ 2013-03-20 Pedro Alves <palves@redhat.com> Yao Qi <yao@codesourcery.com> * gdb.trace/tfile.c: Add comments. (nonconstglob): New global. * gdb.trace/tfile.exp: Add comments. Test printing a non-const global that is not covered by the trace frame. Test disassembling.
127 lines
4.4 KiB
Text
127 lines
4.4 KiB
Text
# Copyright 2010-2013 Free Software Foundation, Inc.
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#
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# This program is free software; you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation; either version 3 of the License, or
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# (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program. If not, see <http://www.gnu.org/licenses/>.
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# Test of trace file support.
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# Note that unlike most of the tracing tests, this can be run on
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# targets lacking tracepoint support; the program tfile.c has the
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# ability to generate synthetic trace files directly, and the tfile
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# target is available to all GDB configs.
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load_lib "trace-support.exp";
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gdb_exit
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gdb_start
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standard_testfile
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if { [gdb_compile "$srcdir/$subdir/$srcfile" $binfile \
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executable {debug nowarnings}] != "" } {
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untested ${testfile}.exp
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return -1
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}
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gdb_reinitialize_dir $srcdir/$subdir
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# Make sure we are starting fresh.
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remote_file host delete basic.tf
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remote_file host delete error.tf
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remote_file target delete basic.tf
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remote_file target delete error.tf
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remote_exec target "$binfile"
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# Copy tracefile from target to host through build.
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remote_download host [remote_upload target basic.tf] basic.tf
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remote_download host [remote_upload target error.tf] error.tf
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gdb_load $binfile
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# Program has presumably exited, now target a trace file it created.
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gdb_test "target tfile basic.tf" "Created tracepoint.*" "target tfile"
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gdb_test "info trace" ".*tracepoint.*in write_basic_trace_file.*" \
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"info tracepoints on trace file"
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gdb_test "tfind 0" \
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"Found trace frame 0, tracepoint \[0-9\]+.
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\#0 write_basic_trace_file ().*" \
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"tfind 0 on trace file"
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# Note that there is no tracepoint collecting these globals, we
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# just happen to know they are covered by the trace frame.
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gdb_test "print testglob" " = 31415" "print testglob on trace file"
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gdb_test "print testglob2" " = 271828" "print testglob2 on trace file"
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# This global is not covered by the trace frame, but since it's const,
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# we should be able to read it from the executable.
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gdb_test "print constglob" " = 10000" "print constglob on trace file"
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# Similarly, disassembly should find the read-only pieces in the executable.
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gdb_test "disassemble main" \
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"Dump of assembler code for function main:.* $hex <\\+0\\>:.*End of assembler dump\."
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# This global is also not covered by the trace frame, and since it's
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# non-const, we should _not_ read it from the executable, as that
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# would show the variable's initial value, not the current at time the
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# trace frame was created.
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gdb_test "print nonconstglob" \
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" = <unavailable>" "print nonconstglob on trace file"
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gdb_test "tfind" "Target failed to find requested trace frame." \
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"tfind does not find a second frame in trace file"
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gdb_test "tstatus" \
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"Using a trace file.*
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Trace stopped by a tstop command.*
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Collected 1 trace frame.*
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Trace buffer has 256 bytes of 4096 bytes free \\(93% full\\).*
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Looking at trace frame 0, tracepoint .*" \
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"tstatus on trace file"
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gdb_test "tfind end" "No longer looking at any trace frame" "leave tfind mode"
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gdb_test "backtrace" "No stack\." \
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"no stack if no traceframe selected"
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gdb_test "info registers" "The program has no registers now\." \
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"no registers if no traceframe selected"
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# Now start afresh, using only a trace file.
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gdb_exit
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gdb_start
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gdb_load $binfile
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gdb_test "target tfile error.tf" "Created tracepoint.*" "target tfile"
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gdb_test "tstatus" \
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"Using a trace file.*
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Trace stopped by an error \\(made-up error, tracepoint 1\\).*
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Collected 0 trace frame.*
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Trace buffer has 256 bytes of 4096 bytes free \\(93% full\\).*
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Not looking at any trace frame.*" \
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"tstatus on error trace file"
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# Make sure we can reopen without error.
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gdb_test \
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"interpreter-exec mi \"-target-select tfile basic.tf\"" \
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"\\^connected.*"
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gdb_test "interpreter-exec mi \"-trace-status\"" \
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"\\^done,supported=\"file\",trace-file=\".*basic.tf\",running=\"0\",stop-reason=\"request\",frames=\"${decimal}\",frames-created=\"${decimal}\",buffer-size=\"${decimal}\",buffer-free=\"${decimal}\",disconnected=\".*\",circular=\".*\",user-name=\"\",notes=\"\",start-time=\".*\",stop-time=\".*\"" \
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"-trace-status"
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