-# Copyright (C) 1992, 1994, 1997, 1998 Free Software Foundation, Inc.
+# Copyright 1992, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2007, 2008, 2009,
+# 2010 Free Software Foundation, Inc.
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
-# the Free Software Foundation; either version 2 of the License, or
+# the Free Software Foundation; either version 3 of the License, or
# (at your option) any later version.
-#
+#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
-#
+#
# You should have received a copy of the GNU General Public License
-# along with this program; if not, write to the Free Software
-# Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
-
-# Please email any bugs, comments, and/or additions to this file to:
-# bug-gdb@prep.ai.mit.edu
+# along with this program. If not, see <http://www.gnu.org/licenses/>.
# This file was written by Fred Fish. (fnf@cygnus.com)
set srcfile ${testfile}.c
set binfile ${objdir}/${subdir}/${testfile}
+set wp_set 1
if [get_compiler_info ${binfile}] {
return -1
}
-# if we are on HPUX and we are not compiled with gcc, then skip these tests.
-
-if [istarget hppa*-*-hpux*] {
- if {!$gcc_compiled} {
- continue
- }
-}
-
-
if { [gdb_compile "${srcdir}/${subdir}/${srcfile}" "${binfile}" executable {debug}] != "" } {
- gdb_suppress_entire_file "Testcase compile failed, so all tests in this file will automatically fail."
+ untested watchpoint.exp
+ return -1
}
# Prepare for watchpoint tests by setting up two breakpoints and one
global hex
global decimal
global srcfile
+ global wp_set
+
+ # Disable hardware watchpoints if necessary.
+ if [target_info exists gdb,no_hardware_watchpoints] {
+ gdb_test "set can-use-hw-watchpoints 0" "" ""
+ }
if [gdb_test "break marker1" "Breakpoint 1 at $hex: file .*$srcfile, line $decimal.*" "set breakpoint at marker1" ] {
return 0;
}
- if [gdb_test "watch ival3" ".*\[Ww\]atchpoint 3: ival3" "set watchpoint on ival3" ] {
- return 0;
+ # ??rehrauer: To fix DTS #CHFts23014, in which setting a watchpoint
+ # before running can cause the inferior to croak on HP-UX 11.0 for
+ # reasons yet unknown, we've disabled the ability to set watches
+ # without a running inferior. Verify the restriction.
+ #
+ send_gdb "watch ival3\n"
+ gdb_expect {
+ -re ".*\[Ww\]atchpoint 3: ival3.*$gdb_prompt $" {
+ pass "set watchpoint on ival3"
+ }
+ -re "warning: can't do that without a running program; try \"break main\", \"run\" first.*$gdb_prompt $" {
+ pass "set watchpoint on ival3"
+ set wp_set 0
+ return 1
+ }
+ timeout {
+ fail "(timeout) set watchpoint on ival3"
+ return 0
+ }
}
-
# "info watch" is the same as "info break"
if [gdb_test "info watch" "1\[ \]*breakpoint.*marker1.*\r\n2\[ \]*breakpoint.*marker2.*\r\n3\[ \]*.*watchpoint.*ival3" "watchpoint found in watchpoint/breakpoint table" ] {
global gdb_prompt
global hex
global decimal
+ global wp_set
# Ensure that the watchpoint is disabled when we startup.
- if [gdb_test "disable 3" "^disable 3\[\r\n\]+" "disable watchpoint in test_simple_watchpoint" ] {
- return 0;
+ if { $wp_set } {
+ if [gdb_test "disable 3" "^disable 3\[\r\n\]+" "disable watchpoint in test_simple_watchpoint" ] {
+ return 0;
+ }
}
}
}
+ if { !$wp_set } {
+ # ??rehrauer: To fix DTS #CHFts23014, in which setting a watchpoint
+ # before running can cause the inferior to croak on HP-UX 11.0
+ # for reasons yet unknown, we've disabled the ability to set
+ # watches without a running inferior. The following testpoints used
+ # to be in [initialize].
+ #
+ send_gdb "watch ival3\n"
+ gdb_expect {
+ -re ".*\[Ww\]atchpoint 3: ival3\r\n$gdb_prompt $" {
+ pass "set watchpoint on ival3"
+ }
+ -re ".*$gdb_prompt $" { fail "set watchpoint on ival3" }
+ timeout { fail "set watchpoint on ival3 (timeout)" }
+ }
+
+ set wp_set 1
+
+ # "info watch" is the same as "info break"
+
+ send_gdb "info watch\n"
+ gdb_expect {
+ -re "1\[ \]*breakpoint.*marker1.*\r\n2\[ \]*breakpoint.*marker2.*\r\n3\[ \]*.*watchpoint.*ival3\r\n$gdb_prompt $" {
+ pass "watchpoint found in watchpoint/breakpoint table"
+ }
+ -re ".*$gdb_prompt $" {
+ fail "watchpoint found in watchpoint/breakpoint table"
+ }
+ timeout {
+ fail "watchpoint found in watchpoint/breakpoint table"
+ }
+ }
+
+ # After installing the watchpoint, we disable it until we are ready
+ # to use it. This allows the test program to run at full speed until
+ # we get to the first marker function.
+
+ send_gdb "disable 3\n"
+ gdb_expect {
+ -re "disable 3\[\r\n\]+$gdb_prompt $" { pass "disable watchpoint" }
+ -re ".*$gdb_prompt $" { fail "disable watchpoint" }
+ timeout { fail "disable watchpoint (timeout)" }
+ }
+ }
+
# After reaching the marker function, enable the watchpoint.
if [gdb_test "enable 3" "^enable 3\[\r\n\]+" "enable watchpoint" ] {
eof { fail "watchpoint hit, first time (eof)" ; return }
}
+ # Check that the hit count is reported correctly
+ gdb_test "info break" ".*watchpoint\[ \t\]+keep\[ \t\]+y\[ \t\]+ival3\r\n\[ \t]+breakpoint already hit 1 time.*" "Watchpoint hit count is 1"
+
gdb_test "delete \$func1_breakpoint_number" ""
# Continue until the next change, from 0 to 1.
gdb_test "cont" "Continuing.*\[Ww\]atchpoint.*ival3.*Old value = 0.*New value = 1.*ival3 = count; ival4 = count;.*" "watchpoint hit, second time"
+ # Check that the hit count is reported correctly
+ gdb_test "info break" ".*watchpoint\[ \t\]+keep\[ \t\]+y\[ \t\]+ival3\r\n\[ \t]+breakpoint already hit 2 times.*" "Watchpoint hit count is 2"
+
# Continue until the next change, from 1 to 2.
gdb_test "cont" "Continuing.*\[Ww\]atchpoint.*ival3.*Old value = 1.*New value = 2.*ival3 = count; ival4 = count;.*" "watchpoint hit, third time"
+
+ # Check that the hit count is reported correctly
+ gdb_test "info break" ".*watchpoint\[ \t\]+keep\[ \t\]+y\[ \t\]+ival3\r\n\[ \t]+breakpoint already hit 3 times.*" "Watchpoint hit count is 3"
# Continue until the next change, from 2 to 3.
gdb_test "cont" "Continuing.*\[Ww\]atchpoint.*ival3.*Old value = 2.*New value = 3.*ival3 = count; ival4 = count;.*" "watchpoint hit, fourth time"
+ # Check that the hit count is reported correctly
+ gdb_test "info break" ".*watchpoint\[ \t\]+keep\[ \t\]+y\[ \t\]+ival3\r\n\[ \t]+breakpoint already hit 4 times.*" "Watchpoint hit count is 4"
+
# Continue until the next change, from 3 to 4.
# Note that this one is outside the loop.
gdb_test "cont" "Continuing.*\[Ww\]atchpoint.*ival3.*Old value = 3.*New value = 4.*ival3 = count; ival4 = count;.*" "watchpoint hit, fifth time"
+ # Check that the hit count is reported correctly
+ gdb_test "info break" ".*watchpoint\[ \t\]+keep\[ \t\]+y\[ \t\]+ival3\r\n\[ \t]+breakpoint already hit 5 times.*" "Watchpoint hit count is 5"
+
# Continue until we hit the finishing marker function.
# Make sure we hit no more watchpoints.
global decimal
global hex
+ # "info watch" is the same as "info break"
+ gdb_test "info watch" "\[0-9\]+\[ \]*breakpoint.*marker1.*\r\n\[0-9\]+\[ \]*breakpoint.*marker2.*\r\n\[0-9]+\[ \]*.*watchpoint.*ival3\r\n\.*\[0-9\]+ times.*" "watchpoints found in watchpoint/breakpoint table"
+
# Ensure that the watchpoint is disabled when we startup.
if [gdb_test "disable 3" "^disable 3\[\r\n\]+" "disable watchpoint in test_disabling_watchpoints" ] {
# Check watchpoint list, looking for the entry that confirms the
# watchpoint is disabled.
- gdb_test "info watchpoints" "3\[ \]*.*watchpoint\[ \]*keep\[ \]*n\[ \]*ival3\r\n.*" "watchpoint disabled in table"
+ gdb_test "info watchpoints" "\[0-9]+\[ \]*.*watchpoint\[ \]*keep\[ \]*n\[ \]*ival3\r\n.*" "watchpoint disabled in table"
# Continue until we hit the finishing marker function.
# Make sure we hit no more watchpoints.
gdb_test "break func2 if 0" "Breakpoint.*at.*"
gdb_test "p \$func2_breakpoint_number = \$bpnum" " = .*"
- # The HPPA has a problem here if it's not using hardware watchpoints
- if {[ istarget "hppa*-*-*" ] && ![ istarget "hppa*-*-*bsd*" ]} then {
- # Don't actually try doing the call, if we do we can't continue.
- setup_xfail "*-*-*"
- fail "calling function with watchpoint enabled"
- } else {
- # The problem is that GDB confuses stepping through the call
- # dummy with hitting the breakpoint at the end of the call dummy.
- # Will be fixed once all architectures define
- # CALL_DUMMY_BREAKPOINT_OFFSET.
- setup_xfail "*-*-*"
- # This doesn't occur if the call dummy starts with a call,
- # because we are out of the dummy by the first time the inferior
- # stops.
- clear_xfail "d10v*-*-*"
- clear_xfail "m68*-*-*"
- clear_xfail "i*86*-*-*"
- clear_xfail "vax-*-*"
- # The following architectures define CALL_DUMMY_BREAKPOINT_OFFSET.
- clear_xfail "alpha-*-*"
- clear_xfail "mips*-*-*"
- clear_xfail "sparc-*-*"
- clear_xfail "hppa*-*-*bsd*"
- # It works with the generic inferior function calling code too.
- clear_xfail "mn10200*-*-*"
- clear_xfail "mn10300*-*-*"
- gdb_test "p func1 ()" "= 73" \
- "calling function with watchpoint enabled"
- }
+ gdb_test "p func1 ()" "= 73" \
+ "calling function with watchpoint enabled"
#
# "finish" brings us back to main.
send_gdb "finish\n"
gdb_expect {
- -re "Run.*exit from.*marker1.* at" { }
- default { fail "finish from marker1" ; return }
+ -re "Run.*exit from.*marker1.* at" {
+ pass "finish from marker1"
+ }
+ default { fail "finish from marker1 (timeout)" ; return }
}
gdb_expect {
exp_continue
}
-re "func1 \\(\\);.*$gdb_prompt $" {
- pass "finish from marker1"
+ pass "back at main from marker1"
}
-re ".*$gdb_prompt $" {
- fail "finish from marker1"
+ fail "back at main from marker1"
}
- default { fail "finish from marker1" ; return }
+ default { fail "back at main from marker1 (timeout)" ; return }
}
gdb_test "next" "for \\(count = 0.*" "next to `for' in watchpoint.exp"
-re ".*$gdb_prompt $" {
fail "until out of loop"
}
- default { fail "until out of loop" ; return }
+ default { fail "until out of loop (timeout)" ; return }
}
gdb_test "step" "ival2 = count.*" "step to ival2 assignment"
proc test_watchpoint_triggered_in_syscall {} {
global gdb_prompt
- if [target_info exists gdb,noinferiorio] {
- verbose "Skipping test_watchpoint_triggered_in_syscall due to noinferiorio"
- return
+ # These tests won't work without printf support.
+ if [gdb_skip_stdio_test "watchpoints triggered in syscall"] {
+ return;
}
# Run until we get to the first marker function.
set x 0
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 "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 "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"
+
# Disable everything so we can finish the program at full speed
gdb_test "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
- gdb_continue_to_end "continue to exit in test_complex_watchpoint"
+ # 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"
+ }
+ }
}
}
+
+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
+ }
+ }
+
+ gdb_test "watch *global_ptr" ".*atchpoint \[0-9\]+: \\*global_ptr"
+ gdb_test "next" ".*global_ptr = buf.*"
+ 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"
+ }
+ }
+ }
+}
+
+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"
+}
# Start with a fresh gdb.
+gdb_exit
gdb_start
gdb_reinitialize_dir $srcdir/$subdir
gdb_load $binfile
+set prev_timeout $timeout
set timeout 600
verbose "Timeout now 600 sec.\n"
[istarget "m32r-*-*"]} then {
test_complex_watchpoint
}
+
+ # Verify that a user can force GDB to use "slow" watchpoints.
+ # (This proves rather little on kernels that don't support
+ # fast watchpoints, but still...)
+ #
+ if ![runto_main] then { fail "watch tests suppressed" }
+
+ send_gdb "set can-use-hw-watchpoints 0\n"
+ gdb_expect {
+ -re "$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"}
+ }
+ }
+
+ test_inaccessible_watchpoint
+
+ # 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
}
+
+# Restore old timeout
+set timeout $prev_timeout
+verbose "Timeout now $timeout sec.\n"
projects / deliverable / binutils-gdb.git / blobdiff