1009 lines
35 KiB
Text
1009 lines
35 KiB
Text
# Copyright 1992, 1994-2000, 2007-2012 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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# This file was written by Fred Fish. (fnf@cygnus.com)
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set testfile "watchpoint"
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set srcfile ${testfile}.c
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set binfile ${objdir}/${subdir}/${testfile}
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set wp_set 1
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if [get_compiler_info ${binfile}] {
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return -1
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}
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if { [gdb_compile "${srcdir}/${subdir}/${srcfile}" "${binfile}" executable {debug}] != "" } {
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untested watchpoint.exp
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return -1
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}
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# Prepare for watchpoint tests by setting up two breakpoints and one
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# watchpoint.
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#
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# We use breakpoints at marker functions to get past all the startup code,
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# so we can get to the watchpoints in a reasonable amount of time from a
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# known starting point.
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#
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# For simplicity, so we always know how to reference specific breakpoints or
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# watchpoints by number, we expect a particular ordering and numbering of
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# each in the combined breakpoint/watchpoint table, as follows:
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#
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# Number What Where
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# 1 Breakpoint marker1()
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# 2 Breakpoint marker2()
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# 3 Watchpoint ival3
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proc initialize {} {
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global gdb_prompt
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global hex
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global decimal
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global srcfile
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global wp_set
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# Disable hardware watchpoints if necessary.
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if [target_info exists gdb,no_hardware_watchpoints] {
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gdb_test_no_output "set can-use-hw-watchpoints 0" ""
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}
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if [gdb_test "break marker1" "Breakpoint 1 at $hex: file .*$srcfile, line $decimal.*" "set breakpoint at marker1" ] {
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return 0;
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}
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if [gdb_test "break marker2" "Breakpoint 2 at $hex: file .*$srcfile, line $decimal.*" "set breakpoint at marker2" ] {
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return 0;
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}
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if [gdb_test "info break" "1\[ \]*breakpoint.*marker1.*\r\n2\[ \]*breakpoint.*marker2.*" "info break in watchpoint.exp" ] {
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return 0;
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}
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# ??rehrauer: To fix DTS #CHFts23014, in which setting a watchpoint
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# before running can cause the inferior to croak on HP-UX 11.0 for
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# reasons yet unknown, we've disabled the ability to set watches
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# without a running inferior. Verify the restriction.
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#
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send_gdb "watch ival3\n"
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gdb_expect {
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-re ".*\[Ww\]atchpoint 3: ival3.*$gdb_prompt $" {
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pass "set watchpoint on ival3"
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}
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-re "warning: can't do that without a running program; try \"break main\", \"run\" first.*$gdb_prompt $" {
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pass "set watchpoint on ival3"
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set wp_set 0
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return 1
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}
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timeout {
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fail "(timeout) set watchpoint on ival3"
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return 0
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}
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}
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if [gdb_test "info watch" "3\[ \]*.*watchpoint.*ival3" "watchpoint found in watchpoint/breakpoint table" ] {
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return 0;
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}
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# After installing the watchpoint, we disable it until we are ready
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# to use it. This allows the test program to run at full speed until
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# we get to the first marker function.
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if [gdb_test "disable 3" "disable 3\[\r\n\]+" "disable watchpoint" ] {
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return 0;
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}
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return 1
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}
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#
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# Test simple watchpoint.
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#
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proc test_simple_watchpoint {} {
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global gdb_prompt
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global hex
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global decimal
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global wp_set
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# Ensure that the watchpoint is disabled when we startup.
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if { $wp_set } {
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if [gdb_test "disable 3" "^disable 3\[\r\n\]+" "disable watchpoint in test_simple_watchpoint" ] {
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return 0;
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}
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}
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# Run until we get to the first marker function.
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gdb_run_cmd
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set timeout 600
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gdb_expect {
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-re "Breakpoint 1, marker1 .*$gdb_prompt $" {
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pass "run to marker1 in test_simple_watchpoint"
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}
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-re ".*$gdb_prompt $" {
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fail "run to marker1 in test_simple_watchpoint"
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return
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}
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timeout {
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fail "run to marker1 in test_simple_watchpoint (timeout)"
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return
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}
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}
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if { !$wp_set } {
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# ??rehrauer: To fix DTS #CHFts23014, in which setting a watchpoint
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# before running can cause the inferior to croak on HP-UX 11.0
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# for reasons yet unknown, we've disabled the ability to set
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# watches without a running inferior. The following testpoints used
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# to be in [initialize].
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#
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gdb_test "watch ival3" \
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"\[Ww\]atchpoint 3: ival3" \
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"set watchpoint on ival3"
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set wp_set 1
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gdb_test "info watch" \
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"3\[ \]*.*watchpoint.*ival3" \
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"watchpoint found in watchpoint/breakpoint table"
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# After installing the watchpoint, we disable it until we are ready
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# to use it. This allows the test program to run at full speed until
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# we get to the first marker function.
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gdb_test "disable 3" "disable 3" "disable watchpoint"
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}
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# After reaching the marker function, enable the watchpoint.
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if [gdb_test "enable 3" "^enable 3\[\r\n\]+" "enable watchpoint" ] {
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return ;
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}
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gdb_test "break func1" "Breakpoint.*at.*"
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gdb_test_no_output "set \$func1_breakpoint_number = \$bpnum"
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gdb_test "continue" "Continuing.*Breakpoint \[0-9\]*, func1.*" \
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"continue to breakpoint at func1"
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# Continue until the first change, from -1 to 0
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send_gdb "cont\n"
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gdb_expect {
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-re "Continuing.*\[Ww\]atchpoint.*ival3.*Old value = -1.*New value = 0.*ival3 = count; ival4 = count;.*$gdb_prompt $" {
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pass "watchpoint hit, first time"
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}
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-re "Continuing.*Breakpoint.*func1.*$gdb_prompt $" {
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setup_xfail "m68*-*-*" 2597
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fail "thought it hit breakpoint at func1 twice"
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gdb_test_no_output "delete \$func1_breakpoint_number"
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gdb_test "continue" "\
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Continuing.*\[Ww\]atchpoint.*ival3.*Old value = -1.*New value = 0.*ival3 = count;" \
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"watchpoint hit, first time"
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}
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-re ".*$gdb_prompt $" { fail "watchpoint hit, first time" ; return }
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timeout { fail "watchpoint hit, first time (timeout)" ; return }
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eof { fail "watchpoint hit, first time (eof)" ; return }
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}
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# Check that the hit count is reported correctly
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gdb_test "info break" ".*watchpoint\[ \t\]+keep\[ \t\]+y\[ \t\]+ival3\r\n\[ \t]+breakpoint already hit 1 time.*" "Watchpoint hit count is 1"
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gdb_test_no_output "delete \$func1_breakpoint_number"
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# Continue until the next change, from 0 to 1.
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gdb_test "cont" "Continuing.*\[Ww\]atchpoint.*ival3.*Old value = 0.*New value = 1.*ival3 = count; ival4 = count;.*" "watchpoint hit, second time"
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# Check that the hit count is reported correctly
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gdb_test "info break" ".*watchpoint\[ \t\]+keep\[ \t\]+y\[ \t\]+ival3\r\n\[ \t]+breakpoint already hit 2 times.*" "Watchpoint hit count is 2"
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# Continue until the next change, from 1 to 2.
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gdb_test "cont" "Continuing.*\[Ww\]atchpoint.*ival3.*Old value = 1.*New value = 2.*ival3 = count; ival4 = count;.*" "watchpoint hit, third time"
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# Check that the hit count is reported correctly
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gdb_test "info break" ".*watchpoint\[ \t\]+keep\[ \t\]+y\[ \t\]+ival3\r\n\[ \t]+breakpoint already hit 3 times.*" "Watchpoint hit count is 3"
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# Continue until the next change, from 2 to 3.
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gdb_test "cont" "Continuing.*\[Ww\]atchpoint.*ival3.*Old value = 2.*New value = 3.*ival3 = count; ival4 = count;.*" "watchpoint hit, fourth time"
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# Check that the hit count is reported correctly
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gdb_test "info break" ".*watchpoint\[ \t\]+keep\[ \t\]+y\[ \t\]+ival3\r\n\[ \t]+breakpoint already hit 4 times.*" "Watchpoint hit count is 4"
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# Continue until the next change, from 3 to 4.
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# Note that this one is outside the loop.
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gdb_test "cont" "Continuing.*\[Ww\]atchpoint.*ival3.*Old value = 3.*New value = 4.*ival3 = count; ival4 = count;.*" "watchpoint hit, fifth time"
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# Check that the hit count is reported correctly
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gdb_test "info break" ".*watchpoint\[ \t\]+keep\[ \t\]+y\[ \t\]+ival3\r\n\[ \t]+breakpoint already hit 5 times.*" "Watchpoint hit count is 5"
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# Continue until we hit the finishing marker function.
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# Make sure we hit no more watchpoints.
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gdb_test "cont" "Continuing.*Breakpoint.*marker2 \(\).*" \
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"continue to marker2"
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# Disable the watchpoint so we run at full speed until we exit.
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if [gdb_test "disable 3" "^disable 3\[\r\n\]+" "watchpoint disabled" ] {
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return ;
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}
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# Run until process exits.
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if [target_info exists gdb,noresults] { return }
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gdb_continue_to_end "continue to exit in test_simple_watchpoint"
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}
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# Test disabling watchpoints.
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proc test_disabling_watchpoints {} {
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global gdb_prompt
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global binfile
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global srcfile
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global decimal
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global hex
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# "info watch" is the same as "info break"
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gdb_test "info watch" "\[0-9]+\[ \]*.*watchpoint.*ival3\r\n\.*\[0-9\]+ times.*" "watchpoints found in watchpoint/breakpoint table"
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# Ensure that the watchpoint is disabled when we startup.
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if [gdb_test "disable 3" "^disable 3\[\r\n\]+" "disable watchpoint in test_disabling_watchpoints" ] {
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return 0;
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}
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# Run until we get to the first marker function.
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gdb_run_cmd
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set timeout 600
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gdb_expect {
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-re "Breakpoint 1, marker1 .*$gdb_prompt $" {
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pass "run to marker1 in test_disabling_watchpoints"
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}
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-re ".*$gdb_prompt $" {
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fail "run to marker1 in test_disabling_watchpoints"
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return
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}
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timeout {
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fail "run to marker1 in test_disabling_watchpoints (timeout)"
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return
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}
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}
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# After reaching the marker function, enable the watchpoint.
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if [gdb_test "enable 3" "^enable 3\[\r\n\]+" "watchpoint enabled" ] {
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return ;
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}
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# Continue until the first change, from -1 to 0
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# Don't check the old value, because on VxWorks the variable value
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# will not have been reinitialized.
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gdb_test "cont" "Continuing.*\[Ww\]atchpoint.*ival3.*Old value = .*New value = 0.*ival3 = count; ival4 = count;.*" "watchpoint hit in test_disabling_watchpoints, first time"
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# Continue until the next change, from 0 to 1.
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gdb_test "cont" "Continuing.*\[Ww\]atchpoint.*ival3.*Old value = 0.*New value = 1.*ival3 = count; ival4 = count;.*" "watchpoint hit in test_disabling_watchpoints, second time"
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# Disable the watchpoint but leave breakpoints
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if [gdb_test "disable 3" "^disable 3\[\r\n\]+" "disable watchpoint #2 in test_disabling_watchpoints" ] {
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return 0;
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}
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# Check watchpoint list, looking for the entry that confirms the
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# watchpoint is disabled.
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gdb_test "info watchpoints" "\[0-9]+\[ \]*.*watchpoint\[ \]*keep\[ \]*n\[ \]*ival3\r\n.*" "watchpoint disabled in table"
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# Continue until we hit the finishing marker function.
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# Make sure we hit no more watchpoints.
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gdb_test "cont" "Continuing.*Breakpoint.*marker2 \\(\\).*" \
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"disabled watchpoint skipped"
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if [target_info exists gdb,noresults] { return }
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gdb_continue_to_end "continue to exit in test_disabling_watchpoints"
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}
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# Test stepping and other mundane operations with watchpoints enabled
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proc test_stepping {} {
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global gdb_prompt
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if [runto marker1] then {
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gdb_test "watch ival2" ".*\[Ww\]atchpoint \[0-9\]*: ival2"
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# Well, let's not be too mundane. It should be a *bit* of a challenge
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gdb_test "break func2 if 0" "Breakpoint.*at.*"
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gdb_test "p \$func2_breakpoint_number = \$bpnum" " = .*"
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gdb_test "p func1 ()" "= 73" \
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"calling function with watchpoint enabled"
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#
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# "finish" brings us back to main.
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# On some targets (e.g. alpha) gdb will stop from the finish in midline
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# of the marker1 call. This is due to register restoring code on
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# the alpha and might be caused by stack adjustment instructions
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# on other targets. In this case we will step once more.
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#
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send_gdb "finish\n"
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gdb_expect {
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-re "Run.*exit from.*marker1.* at" {
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pass "finish from marker1"
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}
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default { fail "finish from marker1 (timeout)" ; return }
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}
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gdb_expect {
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-re "marker1 \\(\\);.*$gdb_prompt $" {
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send_gdb "step\n"
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exp_continue
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}
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-re "func1 \\(\\);.*$gdb_prompt $" {
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pass "back at main from marker1"
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}
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-re ".*$gdb_prompt $" {
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fail "back at main from marker1"
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}
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default { fail "back at main from marker1 (timeout)" ; return }
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}
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gdb_test "next" "for \\(count = 0.*" "next to `for' in watchpoint.exp"
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# Now test that "until" works. It's a bit tricky to test
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# "until", because compilers don't always arrange the code
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# exactly the same way, and we might get slightly different
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# sequences of statements. But the following should be true
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# (if not it is a compiler or a debugger bug): The user who
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# does "until" at every statement of a loop should end up
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# stepping through the loop once, and the debugger should not
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# stop for any of the remaining iterations.
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gdb_test "until" "ival1 = count.*" "until to ival1 assignment"
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gdb_test "until" "ival3 = count.*" "until to ival3 assignment"
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send_gdb "until\n"
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gdb_expect {
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-re "(for \\(count = 0|\}).*$gdb_prompt $" {
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gdb_test "until" "ival1 = count; /. Outside loop ./" \
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"until out of loop"
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}
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-re "ival1 = count; /. Outside loop ./.*$gdb_prompt $" {
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pass "until out of loop"
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}
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-re ".*$gdb_prompt $" {
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fail "until out of loop"
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}
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default { fail "until out of loop (timeout)" ; return }
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}
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gdb_test "step" "ival2 = count.*" "step to ival2 assignment"
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}
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}
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# Test stepping and other mundane operations with watchpoints enabled
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proc test_watchpoint_triggered_in_syscall {} {
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global gdb_prompt
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# These tests won't work without printf support.
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if [gdb_skip_stdio_test "watchpoints triggered in syscall"] {
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return;
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}
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# Run until we get to the first marker function.
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set x 0
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set y 0
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set testname "Watch buffer passed to read syscall"
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if [runto marker2] then {
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gdb_test "watch buf\[0\]" ".*\[Ww\]atchpoint \[0-9\]*: buf\\\[0\\\]"
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gdb_test "watch buf\[1\]" ".*\[Ww\]atchpoint \[0-9\]*: buf\\\[1\\\]"
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gdb_test "watch buf\[2\]" ".*\[Ww\]atchpoint \[0-9\]*: buf\\\[2\\\]"
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gdb_test "watch buf\[3\]" ".*\[Ww\]atchpoint \[0-9\]*: buf\\\[3\\\]"
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gdb_test "watch buf\[4\]" ".*\[Ww\]atchpoint \[0-9\]*: buf\\\[4\\\]"
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gdb_test "break marker4" ".*Breakpoint.*"
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gdb_test_no_output "set doread = 1"
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# If we send_gdb "123\n" before gdb has switched the tty, then it goes
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# to gdb, not the inferior, and we lose. So that is why we have
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# watchpoint.c prompt us, so we can wait for that prompt.
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send_gdb "continue\n";
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gdb_expect {
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-re "Continuing\\.\r\ntype stuff for buf now:" {
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pass "continue to read"
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}
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default {
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fail "continue to read";
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return ;
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}
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}
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send_gdb "123\n"
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gdb_expect {
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-re ".*\[Ww\]atchpoint.*buf\\\[0\\\].*Old value = 0.*New value = 49\[^\n\]*\n" { set x [expr $x+1] ; exp_continue }
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-re ".*\[Ww\]atchpoint.*buf\\\[1\\\].*Old value = 0.*New value = 50\[^\n\]*\n" { set x [expr $x+1] ; exp_continue }
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-re ".*\[Ww\]atchpoint.*buf\\\[2\\\].*Old value = 0.*New value = 51\[^\n\]*\n" { set x [expr $x+1] ; exp_continue }
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-re ".*\[Ww\]atchpoint.*buf\\\[3\\\].*Old value = 0.*New value = 10\[^\n\]*\n" { set x [expr $x+1] ; exp_continue }
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-re ".*$gdb_prompt $" { pass "sent 123" }
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timeout { fail "sent 123 (timeout)" }
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}
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# Examine the values in buf to see how many watchpoints we
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# should have printed.
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send_gdb "print buf\[0\]\n"
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gdb_expect {
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-re ".*= 49.*$gdb_prompt $" { set y [expr $y+1]; pass "print buf\[0\]"}
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-re ".*= 0.*$gdb_prompt $" { pass "print buf\[0\]"}
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-re ".*$gdb_prompt $" { fail "print buf\[0\]"}
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default { fail "print buf\[0\]"}
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}
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send_gdb "print buf\[1\]\n"
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gdb_expect {
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-re ".*= 50.*$gdb_prompt $" { set y [expr $y+1]; pass "print buf\[1\]"}
|
|
-re ".*= 0.*$gdb_prompt $" { pass "print buf\[1\]"}
|
|
-re ".*$gdb_prompt $" { fail "print buf\[1\]"}
|
|
default { fail "print buf\[1\]"}
|
|
}
|
|
send_gdb "print buf\[2\]\n"
|
|
gdb_expect {
|
|
-re ".*= 51.*$gdb_prompt $" { set y [expr $y+1]; pass "print buf\[2\]"}
|
|
-re ".*= 0.*$gdb_prompt $" { pass "print buf\[2\]"}
|
|
-re ".*$gdb_prompt $" { fail "print buf\[2\]"}
|
|
default { fail "print buf\[2\]"}
|
|
}
|
|
send_gdb "print buf\[3\]\n"
|
|
gdb_expect {
|
|
-re ".*= 10.*$gdb_prompt $" { set y [expr $y+1]; pass "print buf\[3\]"}
|
|
-re ".*= 0.*$gdb_prompt $" { pass "print buf\[3\]"}
|
|
-re ".*$gdb_prompt $" { fail "print buf\[3\]" }
|
|
default { fail "print buf\[3\]" }
|
|
}
|
|
|
|
# Did we find what we were looking for? If not, flunk it.
|
|
if [expr $x==$y] then { pass $testname } else { fail "$testname (only triggered $x watchpoints, expected $y)"}
|
|
|
|
# Continue until we hit the finishing marker function.
|
|
# Make sure we hit no more watchpoints.
|
|
gdb_test "cont" "Continuing.*Breakpoint.*marker4 \\(\\).*" \
|
|
"continue to marker4"
|
|
|
|
# Disable everything so we can finish the program at full speed
|
|
gdb_test_no_output "disable" "disable in test_watchpoint_triggered_in_syscall"
|
|
|
|
if [target_info exists gdb,noresults] { return }
|
|
|
|
gdb_continue_to_end "continue to exit in test_watchpoint_triggered_in_syscall"
|
|
}
|
|
}
|
|
|
|
# Do a simple test of of watching through a pointer when the pointer
|
|
# itself changes. Should add some more complicated stuff here.
|
|
|
|
proc test_complex_watchpoint {} {
|
|
global gdb_prompt
|
|
|
|
if [runto marker4] then {
|
|
gdb_test "watch ptr1->val" ".*\[Ww\]atchpoint \[0-9\]*: ptr1->val"
|
|
gdb_test "break marker5" ".*Breakpoint.*"
|
|
|
|
gdb_test "cont" "Continuing.*\[Ww\]atchpoint.*ptr1->val.*Old value = 1.*New value = 2.*" "Test complex watchpoint"
|
|
|
|
# Continue until we hit the marker5 function.
|
|
# Make sure we hit no more watchpoints.
|
|
|
|
gdb_test "cont" "Continuing.*Breakpoint.*marker5 \\(\\).*" \
|
|
"did not trigger wrong watchpoint"
|
|
|
|
# Test watches of things declared locally in a function.
|
|
# In particular, test that a watch of stack-based things
|
|
# is deleted when the stack-based things go out of scope.
|
|
#
|
|
gdb_test_no_output "disable" "disable in test_complex_watchpoint"
|
|
gdb_test "break marker6" ".*Breakpoint.*"
|
|
gdb_test "cont" "Continuing.*Breakpoint.*marker6 \\(\\).*" \
|
|
"continue to marker6"
|
|
gdb_test "break func2" ".*Breakpoint.*"
|
|
gdb_test "cont" "Continuing.*func2.*"
|
|
|
|
# Test a watch of a single stack-based variable, whose scope
|
|
# is the function we're now in. This should auto-delete when
|
|
# execution exits the scope of the watchpoint.
|
|
#
|
|
gdb_test "watch local_a" ".*\[Ww\]atchpoint \[0-9\]*: local_a" "set local watch"
|
|
gdb_test "cont" "\[Ww\]atchpoint.*local_a.*" "trigger local watch"
|
|
gdb_test "cont" "Continuing.*\[Ww\]atchpoint .* deleted because the program has left the block in.*which its expression is valid.*" "self-delete local watch"
|
|
|
|
gdb_test "cont" "Continuing.*func2.*"
|
|
# We should be in "func2" again now. Test a watch of an
|
|
# expression which includes both a stack-based local and
|
|
# something whose scope is larger than this invocation
|
|
# of "func2". This should also auto-delete.
|
|
#
|
|
gdb_test "watch local_a + ival5" ".*\[Ww\]atchpoint \[0-9\]*: local_a . ival5" \
|
|
"set partially local watch"
|
|
gdb_test "cont" "Continuing.*\[Ww\]atchpoint .*: local_a . ival5.*" \
|
|
"trigger1 partially local watch"
|
|
gdb_test "cont" "Continuing.*\[Ww\]atchpoint .*: local_a . ival5.*" \
|
|
"trigger2 partially local watch"
|
|
gdb_test "cont" "Continuing.*\[Ww\]atchpoint .* deleted because the program has left the block in.*which its expression is valid.*" \
|
|
"self-delete partially local watch"
|
|
|
|
# We should be in "func2" again now. Test a watch of a
|
|
# static (non-stack-based) local. Since this has scope
|
|
# across any invocations of "func2", it should not auto-
|
|
# delete.
|
|
#
|
|
gdb_test "cont" "Continuing.*func2.*"
|
|
gdb_test "watch static_b" ".*\[Ww\]atchpoint \[0-9\]*: static_b" \
|
|
"set static local watch"
|
|
gdb_test "cont" "Continuing.*\[Ww\]atchpoint .*: static_b.*" \
|
|
"trigger static local watch"
|
|
gdb_test "cont" "Continuing.*marker6 \\(\\).*" \
|
|
"continue after trigger static local watch"
|
|
gdb_test "info break" ".*watchpoint.*static_b.*" \
|
|
"static local watch did not self-delete"
|
|
|
|
# We should be in "recurser" now. Test a watch of a stack-
|
|
# based local. Symbols mentioned in a watchpoint are bound
|
|
# at watchpoint-creation. Thus, a watch of a stack-based
|
|
# local to a recursing function should be bound only to that
|
|
# one invocation, and should not trigger for other invocations.
|
|
#
|
|
gdb_test "tbreak recurser" ".*breakpoint.*"
|
|
gdb_test "cont" "Continuing.*recurser.*"
|
|
gdb_test "next" "if \\(x > 0.*" "next past local_x initialization"
|
|
gdb_test "watch local_x" ".*\[Ww\]atchpoint \[0-9\]*: local_x" \
|
|
"set local watch in recursive call"
|
|
gdb_test "cont" "Continuing.*\[Ww\]atchpoint .*: local_x.*New value = 2.*" \
|
|
"trigger local watch in recursive call"
|
|
gdb_test "cont" "Continuing.*\[Ww\]atchpoint .* deleted because the program has left the block in.*which its expression is valid.*" \
|
|
"self-delete local watch in recursive call"
|
|
|
|
# Repeat the preceding test, but this time use "recurser::local_x" as
|
|
# the variable to track.
|
|
gdb_test "cont" "Continuing.*marker6.*"
|
|
gdb_test "tbreak recurser" ".*breakpoint.*"
|
|
gdb_test "cont" "Continuing.*recurser.*"
|
|
gdb_test "next" "if \\(x > 0.*" "next past local_x initialization"
|
|
gdb_test "watch recurser::local_x" ".*\[Ww\]atchpoint \[0-9\]*: recurser::local_x" \
|
|
"set local watch in recursive call with explicit scope"
|
|
gdb_test "cont" "Continuing.*\[Ww\]atchpoint .*: recurser::local_x.*New value = 2.*" \
|
|
"trigger local watch with explicit scope in recursive call"
|
|
gdb_test "cont" "Continuing.*\[Ww\]atchpoint .* deleted because the program has left the block in.*which its expression is valid.*" \
|
|
"self-delete local watch with explicit scope in recursive call (2)"
|
|
|
|
# Disable everything so we can finish the program at full speed
|
|
gdb_test_no_output "disable" "disable in test_complex_watchpoint"
|
|
|
|
if [target_info exists gdb,noresults] { return }
|
|
|
|
gdb_continue_to_end "continue to exit in test_complex_watchpoint"
|
|
}
|
|
}
|
|
|
|
proc test_watchpoint_and_breakpoint {} {
|
|
global gdb_prompt
|
|
|
|
# This is a test for PR gdb/38, which involves setting a
|
|
# watchpoint right after you've reached a breakpoint.
|
|
|
|
if [runto func3] then {
|
|
gdb_breakpoint [gdb_get_line_number "second x assignment"]
|
|
gdb_continue_to_breakpoint "second x assignment"
|
|
gdb_test "watch x" ".*atchpoint \[0-9\]+: x"
|
|
gdb_test_multiple "next" "next after watch x" {
|
|
-re ".*atchpoint \[0-9\]+: x\r\n\r\nOld value = 0\r\nNew value = 1\r\n.*$gdb_prompt $" {
|
|
pass "next after watch x"
|
|
}
|
|
-re "\[0-9\]+\[\t \]+y = 1;\r\n$gdb_prompt $" {
|
|
kfail "gdb/38" "next after watch x"
|
|
}
|
|
}
|
|
|
|
gdb_test_no_output "delete \$bpnum" "delete watch x"
|
|
}
|
|
}
|
|
|
|
proc test_constant_watchpoint {} {
|
|
gdb_test "watch 5" "Cannot watch constant value `5'." "number is constant"
|
|
gdb_test "watch marker1" "Cannot watch constant value `marker1'." \
|
|
"marker1 is constant"
|
|
gdb_test "watch count + 6" ".*atchpoint \[0-9\]+: count \\+ 6"
|
|
gdb_test_no_output "delete \$bpnum" "delete watchpoint `count + 6'"
|
|
gdb_test "watch 7 + count" ".*atchpoint \[0-9\]+: 7 \\+ count"
|
|
gdb_test_no_output "delete \$bpnum" "delete watchpoint `7 + count'"
|
|
}
|
|
|
|
proc test_disable_enable_software_watchpoint {} {
|
|
# This is regression test for a bug that caused `enable' to fail
|
|
# for software watchpoints.
|
|
|
|
# Watch something not memory to force a software watchpoint.
|
|
gdb_test {watch $pc} ".*atchpoint \[0-9\]+: .pc"
|
|
|
|
gdb_test_no_output "disable \$bpnum" "disable watchpoint `\$pc'"
|
|
gdb_test_no_output "enable \$bpnum" "reenable watchpoint `\$pc'"
|
|
|
|
gdb_test "info watchpoint \$bpnum" \
|
|
".*watchpoint\[ \t\]+keep\[ \t\]+y\[ \t\]+.pc.*" \
|
|
"watchpoint `\$pc' is enabled"
|
|
|
|
gdb_test_no_output "delete \$bpnum" "delete watchpoint `\$pc'"
|
|
}
|
|
|
|
proc test_watch_location {} {
|
|
gdb_breakpoint [gdb_get_line_number "func5 breakpoint here"]
|
|
gdb_continue_to_breakpoint "func5 breakpoint here"
|
|
|
|
gdb_test "watch -location *x" "atchpoint .*: .*" "watch -location .x"
|
|
|
|
gdb_test "continue" \
|
|
"Continuing.*\[Ww\]atchpoint .*: .*New value = 27.*" \
|
|
"continue with watch -location"
|
|
|
|
gdb_test_no_output "delete \$bpnum" "delete watch -location"
|
|
}
|
|
|
|
# Tests watching areas larger than a word.
|
|
|
|
proc test_wide_location_1 {} {
|
|
# This test watches two words on most 32-bit ABIs, and one word on
|
|
# most 64-bit ABIs.
|
|
|
|
# Platforms where the target can't watch such a large region
|
|
# should clear hw_expected below.
|
|
if [target_info exists gdb,no_hardware_watchpoints] {
|
|
set hw_expected 0
|
|
} else {
|
|
set hw_expected 1
|
|
}
|
|
|
|
gdb_breakpoint [gdb_get_line_number "func6 breakpoint here"]
|
|
gdb_continue_to_breakpoint "func6 breakpoint here"
|
|
|
|
if { $hw_expected } {
|
|
gdb_test "watch foo2" "Hardware watchpoint .*: .*" "watch foo2"
|
|
gdb_test "continue" \
|
|
"Continuing.*Hardware watchpoint .*: .*New value = \\\{val = \\\{0, 11\\\}\\\}.*" \
|
|
"continue with watch foo2"
|
|
} else {
|
|
gdb_test "watch foo2" "atchpoint .*: .*" "watch foo2"
|
|
gdb_test "continue" \
|
|
"Continuing.*\[Ww\]atchpoint .*: .*New value = \\\{val = \\\{0, 11\\\}\\\}.*" \
|
|
"continue with watch foo2"
|
|
}
|
|
|
|
gdb_test_no_output "delete \$bpnum" "delete watch foo2"
|
|
}
|
|
|
|
proc test_wide_location_2 {} {
|
|
# This test watches four words on most 32-bit ABIs, and two words
|
|
# on 64-bit ABIs.
|
|
|
|
# Platforms where the target can't watch such a large region
|
|
# should clear hw_expected below.
|
|
if [target_info exists gdb,no_hardware_watchpoints] {
|
|
set hw_expected 0
|
|
} else {
|
|
set hw_expected 1
|
|
}
|
|
|
|
gdb_breakpoint [gdb_get_line_number "func7 breakpoint here"]
|
|
gdb_continue_to_breakpoint "func7 breakpoint here"
|
|
|
|
if { $hw_expected } {
|
|
gdb_test "watch foo4" "Hardware watchpoint .*: .*" "watch foo4"
|
|
gdb_test "continue" \
|
|
"Continuing.*Hardware watchpoint .*: .*New value = \\\{val = \\\{0, 0, 0, 33\\\}\\\}.*" \
|
|
"continue with watch foo4"
|
|
} else {
|
|
gdb_test "watch foo4" "atchpoint .*: .*" "watch foo4"
|
|
gdb_test "continue" \
|
|
"Continuing.*\[Ww\]atchpoint .*: .*New value = \\\{val = \\\{0, 0, 0, 33\\\}\\\}.*" \
|
|
"continue with watch foo4"
|
|
}
|
|
|
|
gdb_test_no_output "delete \$bpnum" "delete watch foo4"
|
|
}
|
|
|
|
proc test_inaccessible_watchpoint {} {
|
|
global gdb_prompt
|
|
|
|
# This is a test for watchpoints on currently inaccessible (but later
|
|
# valid) memory.
|
|
|
|
if [runto func4] then {
|
|
# Make sure we only allow memory access errors.
|
|
set msg "watchpoint refused to insert on nonexistent struct member"
|
|
gdb_test_multiple "watch struct1.nosuchmember" $msg {
|
|
-re ".*atchpoint \[0-9\]+: struct1.nosuchmember.*$gdb_prompt $" {
|
|
# PR breakpoints/9681
|
|
fail $msg
|
|
}
|
|
-re "There is no member named nosuchmember\\..*$gdb_prompt $" {
|
|
pass $msg
|
|
}
|
|
}
|
|
|
|
# See whether a watchpoint on a normal variable is a hardware
|
|
# watchpoint or not. The watchpoints on NULL should be hardware
|
|
# iff this one is.
|
|
set watchpoint_msg "Watchpoint"
|
|
gdb_test_multiple "watch global_ptr" "watch global_ptr" {
|
|
-re "Watchpoint \[0-9\]+: global_ptr\r\n.*$gdb_prompt $" {
|
|
pass "watch global_ptr"
|
|
}
|
|
-re "Hardware watchpoint \[0-9\]+: global_ptr\r\n.*$gdb_prompt $" {
|
|
set watchpoint_msg "Hardware watchpoint"
|
|
pass "watch global_ptr"
|
|
}
|
|
}
|
|
delete_breakpoints
|
|
|
|
# Make sure that we can watch a constant address, and correctly
|
|
# use a HW watchpoint if supported.
|
|
gdb_test "watch *(int *) 0" \
|
|
"$watchpoint_msg \[0-9\]+: \\*\\(int \\*\\) 0"
|
|
delete_breakpoints
|
|
|
|
# The same, but using -location through an indirection.
|
|
gdb_test "watch -location *global_ptr" \
|
|
"$watchpoint_msg \[0-9\]+: \-location \\*global_ptr"
|
|
delete_breakpoints
|
|
|
|
# This step requires two HW watchpoints. Since some platforms only
|
|
# have a single one, accept either SW or HW watchpoint in this case.
|
|
if {[skip_hw_watchpoint_multi_tests]} {
|
|
set watchpoint_msg "(Watchpoint|Hardware watchpoint)"
|
|
}
|
|
|
|
gdb_test "watch *global_ptr" "$watchpoint_msg \[0-9\]+: \\\*global_ptr"
|
|
gdb_test "set \$global_ptr_breakpoint_number = \$bpnum" ""
|
|
gdb_test "next" ".*global_ptr = buf.*" "global_ptr next"
|
|
gdb_test_multiple "next" "next over ptr init" {
|
|
-re ".*atchpoint \[0-9\]+: \\*global_ptr\r\n\r\nOld value = .*\r\nNew value = 3 .*\r\n.*$gdb_prompt $" {
|
|
# We can not test for <unknown> here because NULL may be readable.
|
|
# This test does rely on *NULL != 3.
|
|
pass "next over ptr init"
|
|
}
|
|
}
|
|
gdb_test_multiple "next" "next over buffer set" {
|
|
-re ".*atchpoint \[0-9\]+: \\*global_ptr\r\n\r\nOld value = 3 .*\r\nNew value = 7 .*\r\n.*$gdb_prompt $" {
|
|
pass "next over buffer set"
|
|
}
|
|
}
|
|
gdb_test "delete \$global_ptr_breakpoint_number" ""
|
|
gdb_test "watch **global_ptr_ptr" ".*atchpoint \[0-9\]+: \\*\\*global_ptr_ptr"
|
|
gdb_test "set \$global_ptr_ptr_breakpoint_number = \$bpnum" ""
|
|
gdb_test "next" ".*global_ptr_ptr = &global_ptr.*" "gloabl_ptr_ptr next"
|
|
gdb_test "next" ".*atchpoint \[0-9\]+: \\*\\*global_ptr_ptr\[\r\n\]+Old value = .*\r\nNew value = 7 .*" "next over global_ptr_ptr init"
|
|
gdb_test "next" ".*atchpoint \[0-9\]+: \\*\\*global_ptr_ptr\[\r\n\]+Old value = 7 .*\r\nNew value = 9 .*" "next over global_ptr_ptr buffer set"
|
|
gdb_test "next" ".*atchpoint \[0-9\]+: \\*\\*global_ptr_ptr\[\r\n\]+Old value = 9 .*\r\nNew value = 5 .*" "next over global_ptr_ptr pointer advance"
|
|
gdb_test_no_output "delete \$global_ptr_ptr_breakpoint_number"
|
|
}
|
|
}
|
|
|
|
proc test_watchpoint_in_big_blob {} {
|
|
global gdb_prompt
|
|
|
|
gdb_test "watch buf" ".*atchpoint \[0-9\]+: buf"
|
|
gdb_test "cont" "Continuing.*atchpoint \[0-9\]+: buf\r\n\r\nOld value = .*testte\".*" "watchpoint on buf hit"
|
|
|
|
gdb_test_no_output "delete \$bpnum" "delete watch buf"
|
|
}
|
|
|
|
# Start with a fresh gdb.
|
|
|
|
gdb_exit
|
|
gdb_start
|
|
gdb_reinitialize_dir $srcdir/$subdir
|
|
gdb_load $binfile
|
|
set prev_timeout $timeout
|
|
set timeout 600
|
|
verbose "Timeout now 600 sec.\n"
|
|
|
|
if [initialize] then {
|
|
|
|
test_simple_watchpoint
|
|
|
|
# The IDT/sim monitor only has 8 (!) open files, of which it uses
|
|
# 4 (!). So we have to make sure one program exits before
|
|
# starting another one.
|
|
if [istarget "mips-idt-*"] then {
|
|
gdb_exit
|
|
gdb_start
|
|
gdb_reinitialize_dir $srcdir/$subdir
|
|
gdb_load $binfile
|
|
initialize
|
|
}
|
|
|
|
test_disabling_watchpoints
|
|
|
|
# See above.
|
|
if [istarget "mips-idt-*"] then {
|
|
gdb_exit
|
|
gdb_start
|
|
gdb_reinitialize_dir $srcdir/$subdir
|
|
gdb_load $binfile
|
|
initialize
|
|
}
|
|
|
|
if ![target_info exists gdb,cannot_call_functions] {
|
|
test_stepping
|
|
|
|
# See above.
|
|
if [istarget "mips-idt-*"] then {
|
|
gdb_exit
|
|
gdb_start
|
|
gdb_reinitialize_dir $srcdir/$subdir
|
|
gdb_load $binfile
|
|
initialize
|
|
}
|
|
}
|
|
|
|
# Only enabled for some targets merely because it has not been tested
|
|
# elsewhere.
|
|
# On sparc-sun-sunos4.1.3, GDB was running all the way to the marker4
|
|
# breakpoint before stopping for the watchpoint. I don't know why.
|
|
if {[istarget "hppa*-*-*"]} then {
|
|
test_watchpoint_triggered_in_syscall
|
|
}
|
|
|
|
# See above.
|
|
if [istarget "mips-idt-*"] then {
|
|
gdb_exit
|
|
gdb_start
|
|
gdb_reinitialize_dir $srcdir/$subdir
|
|
gdb_load $binfile
|
|
initialize
|
|
}
|
|
|
|
# Only enabled for some targets merely because it has not been tested
|
|
# elsewhere.
|
|
if {[istarget "hppa*-*-*"] || \
|
|
[istarget "sparc*-*-sunos*"] || \
|
|
[istarget "m32r-*-*"]} then {
|
|
test_complex_watchpoint
|
|
}
|
|
|
|
test_inaccessible_watchpoint
|
|
|
|
# Verify that a user can force GDB to use "slow" watchpoints.
|
|
# (This proves rather little on kernels that don't support
|
|
# fast watchpoints, but still...)
|
|
#
|
|
if ![runto_main] then { fail "watch tests suppressed" }
|
|
|
|
send_gdb "set can-use-hw-watchpoints 0\n"
|
|
gdb_expect {
|
|
-re "$gdb_prompt $"\
|
|
{pass "disable fast watches"}
|
|
timeout {fail "(timeout) disable fast watches"}
|
|
}
|
|
send_gdb "show can-use-hw-watchpoints\n"
|
|
gdb_expect {
|
|
-re "Debugger's willingness to use watchpoint hardware is 0.*$gdb_prompt $"\
|
|
{pass "show disable fast watches"}
|
|
-re "$gdb_prompt $"\
|
|
{fail "show disable fast watches"}
|
|
timeout {fail "(timeout) show disable fast watches"}
|
|
}
|
|
send_gdb "watch ival3 if count > 1\n"
|
|
gdb_expect {
|
|
-re "Watchpoint \[0-9\]*: ival3.*$gdb_prompt $"\
|
|
{pass "set slow conditional watch"}
|
|
-re "$gdb_prompt $"\
|
|
{fail "set slow conditional watch"}
|
|
timeout {fail "(timeout) set slow conditional watch"}
|
|
}
|
|
send_gdb "continue\n"
|
|
gdb_expect {
|
|
-re "Watchpoint \[0-9\]*: ival3.*Old value = 1.*New value = 2.*$gdb_prompt $"\
|
|
{pass "trigger slow conditional watch"}
|
|
-re "$gdb_prompt $"\
|
|
{fail "trigger slow conditional watch"}
|
|
timeout {fail "(timeout) trigger slow conditional watch"}
|
|
}
|
|
|
|
# We've explicitly disabled hardware watches. Verify that GDB
|
|
# refrains from using them.
|
|
#
|
|
send_gdb "rwatch ival3\n"
|
|
gdb_expect {
|
|
-re "Expression cannot be implemented with read/access watchpoint..*$gdb_prompt $"\
|
|
{pass "rwatch disallowed when can-set-hw-watchpoints cleared"}
|
|
-re "$gdb_prompt $"\
|
|
{fail "rwatch disallowed when can-set-hw-watchpoints cleared"}
|
|
timeout {fail "(timeout) rwatch disallowed when can-use-hw-watchpoints cleared"}
|
|
}
|
|
|
|
# Read- and access watchpoints are unsupported on HP-UX. Verify
|
|
# that GDB gracefully responds to requests to create them.
|
|
#
|
|
if [istarget "hppa*-*-hpux*"] then {
|
|
send_gdb "set can-use-hw-watchpoints 1\n"
|
|
gdb_expect {
|
|
-re "$gdb_prompt $"\
|
|
{pass "enable fast watches"}
|
|
timeout {fail "(timeout) enable fast watches"}
|
|
}
|
|
send_gdb "rwatch ival3\n"
|
|
gdb_expect {
|
|
-re "Target does not have this type of hardware watchpoint support.*$gdb_prompt $"\
|
|
{pass "read watches disallowed"}
|
|
-re "$gdb_prompt $"\
|
|
{fail "read watches disallowed"}
|
|
timeout {fail "(timeout) read watches disallowed"}
|
|
}
|
|
|
|
send_gdb "awatch ival3\n"
|
|
gdb_expect {
|
|
-re "Target does not have this type of hardware watchpoint support.*$gdb_prompt $"\
|
|
{pass "access watches disallowed"}
|
|
-re "$gdb_prompt $"\
|
|
{fail "access watches disallowed"}
|
|
timeout {fail "(timeout) access watches disallowed"}
|
|
}
|
|
}
|
|
|
|
# See above.
|
|
if [istarget "mips-idt-*"] then {
|
|
gdb_exit
|
|
gdb_start
|
|
gdb_reinitialize_dir $srcdir/$subdir
|
|
gdb_load $binfile
|
|
initialize
|
|
}
|
|
|
|
test_watchpoint_and_breakpoint
|
|
|
|
test_watchpoint_in_big_blob
|
|
|
|
# See above.
|
|
if [istarget "mips-idt-*"] then {
|
|
clean_restart
|
|
}
|
|
|
|
test_constant_watchpoint
|
|
|
|
test_disable_enable_software_watchpoint
|
|
|
|
test_watch_location
|
|
|
|
# Re-enable hardware watchpoints if necessary.
|
|
if ![target_info exists gdb,no_hardware_watchpoints] {
|
|
gdb_test_no_output "set can-use-hw-watchpoints 1" ""
|
|
}
|
|
|
|
test_wide_location_1
|
|
test_wide_location_2
|
|
}
|
|
|
|
# Restore old timeout
|
|
set timeout $prev_timeout
|
|
verbose "Timeout now $timeout sec.\n"
|