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This commit brings all the changes made by running gdb/copyright.py as per GDB's Start of New Year Procedure. For the avoidance of doubt, all changes in this commits were performed by the script.
138 lines
4.9 KiB
Plaintext
138 lines
4.9 KiB
Plaintext
# This testcase is part of GDB, the GNU debugger.
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# Copyright 2009-2022 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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# Check that hardware watchpoints get correctly replicated to all
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# existing threads when hardware watchpoints are created. This test
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# creates one hardware watchpoint per thread until a maximum is
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# reached. It originally addresses a deficiency seen on embedded
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# powerpc targets with slotted hardware *point designs.
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set NR_THREADS 10
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set NR_TRIGGERS_PER_THREAD 2
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# This test verifies that a hardware watchpoint gets replicated to
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# every existing thread and is detected properly. This test is
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# only meaningful on a target with hardware watchpoint support.
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if {[skip_hw_watchpoint_tests]} {
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return 0
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}
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standard_testfile
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if {[gdb_compile_pthreads "${srcdir}/${subdir}/${srcfile}" "${binfile}" executable [list debug "additional_flags=-DNR_THREADS=$NR_THREADS -DNR_TRIGGERS_PER_THREAD=$NR_TRIGGERS_PER_THREAD"]] != "" } {
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return -1
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}
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clean_restart ${binfile}
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# Force hardware watchpoints to be used.
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gdb_test_no_output "set can-use-hw-watchpoints 1" ""
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# Run to `main' where we begin our tests.
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if ![runto_main] then {
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return 0
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}
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# Set some default values.
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set hwatch_count 0
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set count 0
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# Count the number of hardware watchpoints available on
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# this target.
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# So we get an immediate warning/error if the target doesn't support a
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# hardware watchpoint or run out of hardware resource.
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gdb_test_no_output "set breakpoint always-inserted on"
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while { $count < $NR_THREADS } {
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# Some targets do resource counting as we insert watchpoints.
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# Such targets won't cause a watchpoint insertion failure, but
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# will switch to software watchpoints silently. We check for
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# both cases here.
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gdb_test_multiple "watch watched_data\[$hwatch_count\]" \
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"watch watched_data\[$hwatch_count\]" {
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-re ".*Could not insert hardware watchpoint.*$gdb_prompt $" {
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# End the loop.
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set count $NR_THREADS
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}
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-re "Hardware watchpoint .*$gdb_prompt $" {
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incr hwatch_count
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}
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-re "Watchpoint .*$gdb_prompt $" {
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# End the loop.
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set count $NR_THREADS
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}
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}
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incr count
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}
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gdb_test_no_output "set breakpoint always-inserted off"
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# Target cannot insert hardware watchpoints. It should have reported
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# (through board settings) that it did not support them in the first place.
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# Just exit.
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if { $hwatch_count == 0} {
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fail "no hardware watchpoints available"
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return 0
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}
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# Set the testcase's internal variable indicating the number of
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# hardware watchpoints the target supports.
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gdb_test_no_output "set var hw_watch_count=${hwatch_count}" \
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"set var hw_watch_count=${hwatch_count}"
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# At this point, we know how many hardware watchpoints
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# the target supports. Use that to do further testing.
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delete_breakpoints
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# Prepare to create all the threads.
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gdb_test "break thread_started" \
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"Breakpoint \[0-9\]+ at .*: file .*${srcfile}, line .*" \
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"breakpoint on thread_started"
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# Move all threads to where they're supposed to be for testing.
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for { set i 0 } { $i < $NR_THREADS } { incr i } {
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# We want to set the maximum number of hardware watchpoints
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# and make sure the target can handle that without an error.
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# That will show us the watchpoints got replicated to all the
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# threads correctly, and that no new watchpoints got created
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# in the background for a specific thread.
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if {$i < $hwatch_count} {
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gdb_test "watch watched_data\[$i\]" \
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"Hardware watchpoint .*"
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} else {
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verbose -log "Not setting watchpoint for watched_data\[$i\]\n"
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}
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gdb_test continue "Continuing\\..*Breakpoint \[0-9\]+, thread_started \\(\\) at .*$srcfile.*" \
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"Thread $i hit breakpoint at thread_started"
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}
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# Let the threads run and change the watched data, leading
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# to watchpoint triggers.
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gdb_test_no_output "set var test_ready=1" \
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"set var test_ready=1"
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# Set the number of expected watchpoint triggers.
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set TRIGGERS [expr "$NR_THREADS * $hwatch_count * $NR_TRIGGERS_PER_THREAD"]
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# Move the threads and hit the watchpoints TRIGGERS times.
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for { set i 1 } { $i <= $TRIGGERS } { incr i } {
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gdb_test continue "Continuing\\..*Hardware watchpoint \[0-9\]+: watched_data\[\[0-9\]+\].*Old value = \[0-9\]+.*New value = \[0-9\]+.*thread_function \\(arg=$hex\\) at .*$srcfile.*" \
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"Continue to watchpoint trigger $i out of ${TRIGGERS} on watched_data"
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}
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