mirror of
https://sourceware.org/git/binutils-gdb.git
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118 lines
3.5 KiB
Plaintext
118 lines
3.5 KiB
Plaintext
# Copyright 1998-2020 Free Software Foundation, Inc.
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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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load_lib "trace-support.exp"
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standard_testfile
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if [prepare_for_testing "failed to prepare" $testfile $srcfile \
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{debug nowarnings}] {
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return -1
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}
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if ![runto_main] {
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fail "can't run to main to check for trace support"
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return -1
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}
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if ![gdb_target_supports_trace] {
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unsupported "target does not support trace"
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return -1
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}
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set BUFFER_SIZE 4
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set default_size -1
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set test "get default buffer size"
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# Save default trace buffer size in 'default_size'.
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gdb_test_multiple "tstatus" $test {
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-re ".*Trace buffer has ($decimal) bytes of ($decimal) bytes free.*$gdb_prompt $" {
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set default_size $expect_out(2,string)
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pass $test
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}
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}
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# If we did not get the default size then there is no point in running the
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# tests below.
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if { $default_size < 0 } {
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return -1
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}
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# Change buffer size to 'BUFFER_SIZE'.
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gdb_test_no_output \
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"set trace-buffer-size $BUFFER_SIZE" \
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"set trace buffer size 1"
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gdb_test "tstatus" \
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".*Trace buffer has $decimal bytes of $BUFFER_SIZE bytes free.*" \
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"tstatus check 2"
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gdb_test "show trace-buffer-size $BUFFER_SIZE" \
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"Requested size of trace buffer is $BUFFER_SIZE.*" \
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"show trace buffer size"
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# -1 means "no limit on GDB's end. Let the target choose."
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gdb_test_no_output \
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"set trace-buffer-size -1" \
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"set trace buffer size 2"
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# "unlimited" means the same.
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gdb_test_no_output "set trace-buffer-size unlimited"
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# Test that tstatus gives us default buffer size now.
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gdb_test "tstatus" \
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".*Trace buffer has $decimal bytes of $default_size bytes free.*" \
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"tstatus check 3"
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gdb_test_no_output \
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"set trace-buffer-size $BUFFER_SIZE" \
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"set trace buffer size 3"
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# We set trace buffer to very small size. Then after running trace,
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# we check if it is full. This will show if setting trace buffer
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# size really worked.
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gdb_breakpoint ${srcfile}:[gdb_get_line_number "breakpoint1"]
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gdb_test "trace test_function" \
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"Tracepoint \[0-9\]+ at .*" \
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"set tracepoint at test_function"
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gdb_trace_setactions "Set action for trace point 1" "" \
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"collect var" "^$"
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gdb_test_no_output "tstart"
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gdb_test "continue" \
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"Continuing.*Breakpoint $decimal.*" \
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"run trace experiment 1"
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gdb_test "tstatus" \
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".*Trace stopped because the buffer was full.*" \
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"buffer full check 1"
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# Use the default size -- the trace buffer should not end up
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# full this time
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clean_restart ${testfile}
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runto_main
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gdb_breakpoint ${srcfile}:[gdb_get_line_number "breakpoint1"]
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gdb_test "trace test_function" \
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"Tracepoint \[0-9\]+ at .*" \
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"set tracepoint at test_function"
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gdb_trace_setactions "Set action for trace point 2" "" \
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"collect var" "^$"
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gdb_test_no_output "tstart"
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gdb_test "continue" \
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"Continuing.*Breakpoint $decimal.*" \
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"run trace experiment 2"
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gdb_test "tstatus" \
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".*Trace is running on the target.*" \
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"buffer full check 2"
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gdb_test_no_output "tstop"
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