mirror of
https://sourceware.org/git/binutils-gdb.git
synced 2024-12-21 04:42:53 +08:00
986 lines
34 KiB
Plaintext
986 lines
34 KiB
Plaintext
# Copyright 1992-2018 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 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, see <http://www.gnu.org/licenses/>.
|
|
|
|
# This file was written by Fred Fish. (fnf@cygnus.com)
|
|
|
|
|
|
standard_testfile
|
|
|
|
if [get_compiler_info] {
|
|
return -1
|
|
}
|
|
|
|
if { [gdb_compile "${srcdir}/${subdir}/${srcfile}" "${binfile}" executable {debug}] != "" } {
|
|
untested "failed to compile"
|
|
return -1
|
|
}
|
|
|
|
# True if we're forcing no hardware watchpoints.
|
|
set no_hw 0
|
|
|
|
# Prepare for watchpoint tests by setting up two breakpoints and one
|
|
# watchpoint.
|
|
#
|
|
# We use breakpoints at marker functions to get past all the startup code,
|
|
# so we can get to the watchpoints in a reasonable amount of time from a
|
|
# known starting point.
|
|
#
|
|
# For simplicity, so we always know how to reference specific breakpoints or
|
|
# watchpoints by number, we expect a particular ordering and numbering of
|
|
# each in the combined breakpoint/watchpoint table, as follows:
|
|
#
|
|
# Number What Where
|
|
# 1 Breakpoint marker1()
|
|
# 2 Breakpoint marker2()
|
|
# 3 Watchpoint ival3
|
|
|
|
proc initialize {} {
|
|
global gdb_prompt
|
|
global hex
|
|
global decimal
|
|
global srcfile
|
|
|
|
if [gdb_test "break marker1" "Breakpoint 1 at $hex: file .*$srcfile, line $decimal.*" "set breakpoint at marker1" ] {
|
|
return 0
|
|
}
|
|
|
|
|
|
if [gdb_test "break marker2" "Breakpoint 2 at $hex: file .*$srcfile, line $decimal.*" "set breakpoint at marker2" ] {
|
|
return 0
|
|
}
|
|
|
|
|
|
if [gdb_test "info break" "1\[ \]*breakpoint.*marker1.*\r\n2\[ \]*breakpoint.*marker2.*" "info break in watchpoint.exp" ] {
|
|
return 0
|
|
}
|
|
|
|
gdb_test "watch ival3" ".*\[Ww\]atchpoint 3: ival3.*" "set watchpoint on ival3"
|
|
|
|
if [gdb_test "info watch" "3\[ \]*.*watchpoint.*ival3" "watchpoint found in watchpoint/breakpoint table" ] {
|
|
return 0
|
|
}
|
|
|
|
|
|
# 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.
|
|
|
|
if [gdb_test "disable 3" "disable 3\[\r\n\]+" "disable watchpoint" ] {
|
|
return 0
|
|
}
|
|
|
|
|
|
return 1
|
|
}
|
|
|
|
#
|
|
# Test simple watchpoint.
|
|
#
|
|
|
|
proc test_simple_watchpoint {} {
|
|
global gdb_prompt
|
|
global hex
|
|
global decimal
|
|
|
|
# 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
|
|
}
|
|
|
|
# Run until we get to the first marker function.
|
|
|
|
gdb_run_cmd
|
|
set timeout 600
|
|
set test "run to marker1 in test_simple_watchpoint"
|
|
set retcode [gdb_test_multiple "" $test {
|
|
-re "Breakpoint 1, marker1 .*$gdb_prompt $" {
|
|
pass $test
|
|
}
|
|
}]
|
|
|
|
if { $retcode != 0 } {
|
|
return
|
|
}
|
|
|
|
# After reaching the marker function, enable the watchpoint.
|
|
|
|
if [gdb_test "enable 3" "^enable 3\[\r\n\]+" "enable watchpoint" ] {
|
|
return
|
|
}
|
|
|
|
|
|
gdb_test "break func1" "Breakpoint.*at.*"
|
|
gdb_test_no_output "set \$func1_breakpoint_number = \$bpnum"
|
|
|
|
gdb_test "continue" "Continuing.*Breakpoint \[0-9\]*, func1.*" \
|
|
"continue to breakpoint at func1"
|
|
|
|
# Continue until the first change, from -1 to 0
|
|
|
|
set test "watchpoint hit, first time"
|
|
gdb_test_multiple "cont" $test {
|
|
-re "Continuing.*\[Ww\]atchpoint.*ival3.*Old value = -1.*New value = 0.*ival3 = count; ival4 = count;.*$gdb_prompt $" {
|
|
pass $test
|
|
}
|
|
-re "Continuing.*Breakpoint.*func1.*$gdb_prompt $" {
|
|
setup_xfail "m68*-*-*" 2597
|
|
fail "thought it hit breakpoint at func1 twice"
|
|
gdb_test_no_output "delete \$func1_breakpoint_number"
|
|
gdb_test "continue" "\
|
|
Continuing.*\[Ww\]atchpoint.*ival3.*Old value = -1.*New value = 0.*ival3 = count;" \
|
|
$test
|
|
}
|
|
}
|
|
|
|
# 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_no_output "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.
|
|
|
|
gdb_test "cont" "Continuing.*Breakpoint.*marker2 \(\).*" \
|
|
"continue to marker2"
|
|
|
|
# Disable the watchpoint so we run at full speed until we exit.
|
|
|
|
if [gdb_test "disable 3" "^disable 3\[\r\n\]+" "watchpoint disabled" ] {
|
|
return
|
|
}
|
|
|
|
|
|
# Run until process exits.
|
|
|
|
if [target_info exists gdb,noresults] { return }
|
|
|
|
gdb_continue_to_end "continue to exit in test_simple_watchpoint"
|
|
}
|
|
|
|
# Test disabling watchpoints.
|
|
|
|
proc test_disabling_watchpoints {} {
|
|
global gdb_prompt
|
|
global binfile
|
|
global srcfile
|
|
global decimal
|
|
global hex
|
|
|
|
gdb_test "info watch" "\[0-9]+\[ \]*.*watchpoint.*ival3.*" "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" ] {
|
|
return 0
|
|
}
|
|
|
|
|
|
# Run until we get to the first marker function.
|
|
|
|
gdb_run_cmd
|
|
set timeout 600
|
|
set test "run to marker1 in test_disabling_watchpoints"
|
|
set retcode [gdb_test_multiple "" $test {
|
|
-re "Breakpoint 1, marker1 .*$gdb_prompt $" {
|
|
pass $test
|
|
}
|
|
}]
|
|
|
|
if { $retcode != 0 } {
|
|
return
|
|
}
|
|
|
|
# After reaching the marker function, enable the watchpoint.
|
|
|
|
if [gdb_test "enable 3" "^enable 3\[\r\n\]+" "watchpoint enabled" ] {
|
|
return
|
|
}
|
|
|
|
|
|
# Continue until the first change, from -1 to 0
|
|
# Don't check the old value, because on VxWorks the variable value
|
|
# will not have been reinitialized.
|
|
gdb_test "cont" "Continuing.*\[Ww\]atchpoint.*ival3.*Old value = .*New value = 0.*ival3 = count; ival4 = count;.*" "watchpoint hit in test_disabling_watchpoints, first time"
|
|
|
|
# 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 in test_disabling_watchpoints, second time"
|
|
|
|
# Disable the watchpoint but leave breakpoints
|
|
|
|
if [gdb_test "disable 3" "^disable 3\[\r\n\]+" "disable watchpoint #2 in test_disabling_watchpoints" ] {
|
|
return 0
|
|
}
|
|
|
|
|
|
# Check watchpoint list, looking for the entry that confirms the
|
|
# watchpoint is disabled.
|
|
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 "cont" "Continuing.*Breakpoint.*marker2 \\(\\).*" \
|
|
"disabled watchpoint skipped"
|
|
|
|
if [target_info exists gdb,noresults] { return }
|
|
|
|
gdb_continue_to_end "continue to exit in test_disabling_watchpoints"
|
|
}
|
|
|
|
# Test stepping and other mundane operations with watchpoints enabled
|
|
proc test_stepping {} {
|
|
global gdb_prompt
|
|
|
|
if [runto marker1] then {
|
|
gdb_test "watch ival2" ".*\[Ww\]atchpoint \[0-9\]*: ival2"
|
|
|
|
# Well, let's not be too mundane. It should be a *bit* of a challenge
|
|
gdb_test "break func2 if 0" "Breakpoint.*at.*"
|
|
gdb_test "p \$func2_breakpoint_number = \$bpnum" " = .*"
|
|
|
|
gdb_test "p func1 ()" "= 73" \
|
|
"calling function with watchpoint enabled"
|
|
|
|
#
|
|
# "finish" brings us back to main.
|
|
# On some targets (e.g. alpha) gdb will stop from the finish in midline
|
|
# of the marker1 call. This is due to register restoring code on
|
|
# the alpha and might be caused by stack adjustment instructions
|
|
# on other targets. In this case we will step once more.
|
|
#
|
|
|
|
send_gdb "finish\n"
|
|
gdb_expect {
|
|
-re "Run.*exit from.*marker1.* at" {
|
|
pass "finish from marker1"
|
|
}
|
|
default { fail "finish from marker1 (timeout)" ; return }
|
|
}
|
|
|
|
gdb_expect {
|
|
-re "marker1 \\(\\);.*$gdb_prompt $" {
|
|
send_gdb "step\n"
|
|
exp_continue
|
|
}
|
|
-re "func1 \\(\\);.*$gdb_prompt $" {
|
|
pass "back at main from marker1"
|
|
}
|
|
-re ".*$gdb_prompt $" {
|
|
fail "back at main from marker1"
|
|
}
|
|
default { fail "back at main from marker1 (timeout)" ; return }
|
|
}
|
|
|
|
gdb_test "next" "for \\(count = 0.*" "next to `for' in watchpoint.exp"
|
|
|
|
# Now test that "until" works. It's a bit tricky to test
|
|
# "until", because compilers don't always arrange the code
|
|
# exactly the same way, and we might get slightly different
|
|
# sequences of statements. But the following should be true
|
|
# (if not it is a compiler or a debugger bug): The user who
|
|
# does "until" at every statement of a loop should end up
|
|
# stepping through the loop once, and the debugger should not
|
|
# stop for any of the remaining iterations.
|
|
|
|
gdb_test "until" "ival1 = count.*" "until to ival1 assignment"
|
|
gdb_test "until" "ival3 = count.*" "until to ival3 assignment"
|
|
set test "until out of loop"
|
|
gdb_test_multiple "until" $test {
|
|
-re "(for \\(count = 0|\}).*$gdb_prompt $" {
|
|
gdb_test "until" "ival1 = count; /. Outside loop ./" $test
|
|
}
|
|
-re "ival1 = count; /. Outside loop ./.*$gdb_prompt $" {
|
|
pass $test
|
|
}
|
|
}
|
|
|
|
gdb_test "step" "ival2 = count.*" "step to ival2 assignment"
|
|
}
|
|
}
|
|
|
|
# Test stepping and other mundane operations with watchpoints enabled
|
|
proc test_watchpoint_triggered_in_syscall {} {
|
|
global gdb_prompt
|
|
|
|
# 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
|
|
set y 0
|
|
set testname "watch buffer passed to read syscall"
|
|
if [runto marker2] then {
|
|
gdb_test "watch buf\[0\]" ".*\[Ww\]atchpoint \[0-9\]*: buf\\\[0\\\]"
|
|
gdb_test "watch buf\[1\]" ".*\[Ww\]atchpoint \[0-9\]*: buf\\\[1\\\]"
|
|
gdb_test "watch buf\[2\]" ".*\[Ww\]atchpoint \[0-9\]*: buf\\\[2\\\]"
|
|
gdb_test "watch buf\[3\]" ".*\[Ww\]atchpoint \[0-9\]*: buf\\\[3\\\]"
|
|
gdb_test "watch buf\[4\]" ".*\[Ww\]atchpoint \[0-9\]*: buf\\\[4\\\]"
|
|
gdb_test "break marker4" ".*Breakpoint.*"
|
|
|
|
gdb_test_no_output "set doread = 1"
|
|
|
|
# If we send gdb "123\n" before gdb has switched the tty, then it goes
|
|
# to gdb, not the inferior, and we lose. So that is why we have
|
|
# watchpoint.c prompt us, so we can wait for that prompt.
|
|
|
|
send_gdb "continue\n"
|
|
gdb_expect {
|
|
-re "Continuing\\.\r\ntype stuff for buf now:" {
|
|
pass "continue to read"
|
|
}
|
|
default {
|
|
fail "continue to read"
|
|
return
|
|
}
|
|
}
|
|
|
|
set test "sent 123"
|
|
gdb_test_multiple "123" $test {
|
|
-re ".*\[Ww\]atchpoint.*buf\\\[0\\\].*Old value = 0.*New value = 49\[^\n\]*\n" { set x [expr $x+1] ; exp_continue }
|
|
-re ".*\[Ww\]atchpoint.*buf\\\[1\\\].*Old value = 0.*New value = 50\[^\n\]*\n" { set x [expr $x+1] ; exp_continue }
|
|
-re ".*\[Ww\]atchpoint.*buf\\\[2\\\].*Old value = 0.*New value = 51\[^\n\]*\n" { set x [expr $x+1] ; exp_continue }
|
|
-re ".*\[Ww\]atchpoint.*buf\\\[3\\\].*Old value = 0.*New value = 10\[^\n\]*\n" { set x [expr $x+1] ; exp_continue }
|
|
-re ".*$gdb_prompt $" { pass $test }
|
|
}
|
|
|
|
# Examine the values in buf to see how many watchpoints we
|
|
# should have printed.
|
|
set test "print buf\[0\]"
|
|
gdb_test_multiple $test $test {
|
|
-re ".*= 49.*$gdb_prompt $" { set y [expr $y+1]; pass $test }
|
|
-re ".*= 0.*$gdb_prompt $" { $test }
|
|
}
|
|
set test "print buf\[1\]"
|
|
gdb_test_multiple $test $test {
|
|
-re ".*= 50.*$gdb_prompt $" { set y [expr $y+1]; pass $test }
|
|
-re ".*= 0.*$gdb_prompt $" { pass $test }
|
|
}
|
|
set test "print buf\[2\]"
|
|
gdb_test_multiple $test $test {
|
|
-re ".*= 51.*$gdb_prompt $" { set y [expr $y+1]; pass $test }
|
|
-re ".*= 0.*$gdb_prompt $" { pass $test }
|
|
}
|
|
set test "print buf\[3\]"
|
|
gdb_test_multiple $test $test {
|
|
-re ".*= 10.*$gdb_prompt $" { set y [expr $y+1]; pass $test }
|
|
-re ".*= 0.*$gdb_prompt $" { pass $test }
|
|
}
|
|
|
|
# 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_breakpoint [gdb_get_line_number "func2 breakpoint here"]
|
|
gdb_continue_to_breakpoint "func2 breakpoint here"
|
|
|
|
# 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"
|
|
|
|
set test "self-delete local watch"
|
|
gdb_test_multiple "cont" $test {
|
|
-re "Continuing.*\[Ww\]atchpoint .* deleted because the program has left the block in.*which its expression is valid.*\r\n$gdb_prompt $" {
|
|
pass $test
|
|
}
|
|
-re "can't compute CFA for this frame.*\r\n$gdb_prompt $" {
|
|
global no_hw
|
|
|
|
# GCC < 4.5.0 does not get LOCATIONS_VALID set by dwarf2read.c.
|
|
# Therefore epilogue unwinder gets applied which is
|
|
# incompatible with dwarf2_frame_cfa.
|
|
if {$no_hw && ([test_compiler_info {gcc-[0-3]-*}]
|
|
|| [test_compiler_info {gcc-4-[0-4]-*}])} {
|
|
xfail "$test (old GCC has broken watchpoints in epilogues)"
|
|
return
|
|
}
|
|
fail $test
|
|
}
|
|
}
|
|
|
|
gdb_continue_to_breakpoint "func2 breakpoint here"
|
|
# 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_continue_to_breakpoint "func2 breakpoint here"
|
|
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 breakpoints/7143, 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 "next" \
|
|
".*atchpoint \[0-9\]+: x\r\n\r\nOld value = 0\r\nNew value = 1\r\n.*" \
|
|
"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 (int *)5" "Cannot watch constant value `\\(int \\*\\)5'." \
|
|
"number with cast 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 {} {
|
|
global gdb_prompt
|
|
|
|
gdb_breakpoint [gdb_get_line_number "func5 breakpoint here"]
|
|
gdb_continue_to_breakpoint "func5 breakpoint here"
|
|
|
|
# Check first if a null pointer can be dereferenced on the target.
|
|
gdb_test_multiple "p *nullptr" "" {
|
|
-re "Cannot access memory at address 0x0.*$gdb_prompt $" {
|
|
gdb_test "watch -location nullptr->p->x" \
|
|
"Cannot access memory at address 0x0"
|
|
}
|
|
-re ".*$gdb_prompt $" {
|
|
# Null pointer dereference is legitimate.
|
|
}
|
|
}
|
|
|
|
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 {} {
|
|
global no_hw
|
|
global gdb_prompt
|
|
|
|
# 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 { $no_hw || [target_info exists gdb,no_hardware_watchpoints]
|
|
|| [istarget arm*-*-*]
|
|
|| ([istarget powerpc*-*-*] && ![is_lp64_target])} {
|
|
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"
|
|
set test "continue with watch foo2"
|
|
gdb_test_multiple "cont" $test {
|
|
-re "Continuing.*\[Ww\]atchpoint .*: .*New value = \\\{val = \\\{0, 11\\\}\\\}.*$gdb_prompt $" {
|
|
pass $test
|
|
}
|
|
-re "Could not insert hardware breakpoints:.*You may have requested too many hardware breakpoints/watchpoints.*$gdb_prompt $" {
|
|
# This may happen with remote targets that support
|
|
# hardware watchpoints. We only find out the
|
|
# watchpoint was too large, for example, at insert
|
|
# time. If GDB is ever adjusted to downgrade the
|
|
# watchpoint automatically in this case, this match
|
|
# should be removed.
|
|
pass $test
|
|
}
|
|
}
|
|
}
|
|
|
|
gdb_test_no_output "delete \$bpnum" "delete watch foo2"
|
|
}
|
|
|
|
proc test_wide_location_2 {} {
|
|
global no_hw
|
|
global gdb_prompt
|
|
|
|
# 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 { $no_hw || [target_info exists gdb,no_hardware_watchpoints]
|
|
|| [istarget arm*-*-*]
|
|
|| [istarget powerpc*-*-*]} {
|
|
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"
|
|
set test "continue with watch foo4"
|
|
gdb_test_multiple "cont" $test {
|
|
-re "Continuing.*\[Ww\]atchpoint .*: .*New value = \\\{val = \\\{0, 0, 0, 33\\\}\\\}.*$gdb_prompt $" {
|
|
pass $test
|
|
}
|
|
-re "Could not insert hardware breakpoints:.*You may have requested too many hardware breakpoints/watchpoints.*$gdb_prompt $" {
|
|
# This may happen with remote targets that support
|
|
# hardware watchpoints. We only find out the
|
|
# watchpoint was too large, for example, at insert
|
|
# time. If GDB is ever adjusted to downgrade the
|
|
# watchpoint automatically in this case, this match
|
|
# should be removed.
|
|
pass $test
|
|
}
|
|
}
|
|
}
|
|
|
|
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.*" "global_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_no_hw_watchpoints {} {
|
|
global testfile
|
|
|
|
clean_restart $testfile
|
|
|
|
# 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" }
|
|
|
|
gdb_test_no_output "set can-use-hw-watchpoints 0" "disable fast watches"
|
|
|
|
gdb_test "show can-use-hw-watchpoints" \
|
|
"Debugger's willingness to use watchpoint hardware is 0." \
|
|
"show disable fast watches"
|
|
|
|
gdb_test "watch ival3 if count > 1" \
|
|
"Watchpoint \[0-9\]*: ival3.*" \
|
|
"set slow conditional watch"
|
|
|
|
gdb_test "continue" \
|
|
"Watchpoint \[0-9\]*: ival3.*Old value = 1.*New value = 2.*" \
|
|
"trigger slow conditional watch"
|
|
|
|
gdb_test_no_output "delete \$bpnum" "delete watch ival3"
|
|
|
|
gdb_test "watch ival3 if count > 1 thread 1 " \
|
|
"Watchpoint \[0-9\]*: ival3.*" \
|
|
"set slow condition watch w/thread"
|
|
|
|
gdb_test_no_output "delete \$bpnum" "delete watch w/condition and thread"
|
|
|
|
# We've explicitly disabled hardware watches. Verify that GDB
|
|
# refrains from using them.
|
|
#
|
|
gdb_test "rwatch ival3" \
|
|
"Can't set read/access watchpoint when hardware watchpoints are disabled." \
|
|
"rwatch disallowed when can-set-hw-watchpoints cleared"
|
|
gdb_test "awatch ival3" \
|
|
"Can't set read/access watchpoint when hardware watchpoints are disabled." \
|
|
"awatch disallowed when can-set-hw-watchpoints cleared"
|
|
|
|
|
|
# Re-enable hardware watchpoints if necessary.
|
|
if ![target_info exists gdb,no_hardware_watchpoints] {
|
|
gdb_test_no_output "set can-use-hw-watchpoints 1" ""
|
|
}
|
|
}
|
|
|
|
proc test_watchpoint_in_big_blob {} {
|
|
global gdb_prompt
|
|
|
|
# On native targets where we do hardware resource accounting, this
|
|
# may end up as a software watchpoint.
|
|
set ok 0
|
|
set test "watch buf"
|
|
gdb_test_multiple "watch buf" $test {
|
|
-re "Hardware watchpoint \[0-9\]+: buf.*You may have requested too many hardware breakpoints/watchpoints.*$gdb_prompt $" {
|
|
# This may happen with remote targets (where we don't do
|
|
# resource accounting) that support hardware watchpoints,
|
|
# when breakpoint always-inserted is on. The watchpoint
|
|
# was too large, for example. If GDB is ever adjusted to
|
|
# downgrade the watchpoint automatically in this case,
|
|
# this match should be removed. Note the breakpoint has
|
|
# been created, and is in the list, so it needs deleting.
|
|
pass $test
|
|
}
|
|
-re ".*atchpoint \[0-9\]+: buf.*$gdb_prompt $" {
|
|
pass $test
|
|
set ok 1
|
|
}
|
|
}
|
|
|
|
if { $ok } {
|
|
set test "watchpoint on buf hit"
|
|
gdb_test_multiple "cont" $test {
|
|
-re "Continuing.*atchpoint \[0-9\]+: buf\r\n\r\nOld value = .*testte\".*$gdb_prompt $" {
|
|
pass $test
|
|
}
|
|
-re "Could not insert hardware breakpoints:.*You may have requested too many hardware breakpoints/watchpoints.*$gdb_prompt $" {
|
|
# This may happen with remote targets that support
|
|
# hardware watchpoints. We only find out the
|
|
# watchpoint was too large, for example, at insert
|
|
# time. If GDB is ever adjusted to downgrade the
|
|
# watchpoint automatically in this case, this match
|
|
# should be removed.
|
|
pass $test
|
|
}
|
|
}
|
|
}
|
|
|
|
gdb_test_no_output "delete \$bpnum" "delete watch buf"
|
|
}
|
|
|
|
proc test_watch_register_location {} {
|
|
global no_hw
|
|
|
|
if {!$no_hw && ![target_info exists gdb,no_hardware_watchpoints]} {
|
|
# Non-memory read/access watchpoints are not supported, they would
|
|
# require software read/access watchpoint support (which is not
|
|
# currently available).
|
|
gdb_test "rwatch \$pc" \
|
|
"Expression cannot be implemented with read/access watchpoint..*" \
|
|
"rwatch disallowed for register based expression"
|
|
gdb_test "awatch \$pc" \
|
|
"Expression cannot be implemented with read/access watchpoint..*" \
|
|
"awatch disallowed for register based expression"
|
|
}
|
|
}
|
|
|
|
# Start with a fresh gdb.
|
|
|
|
set prev_timeout $timeout
|
|
set timeout 600
|
|
verbose "Timeout now 600 sec.\n"
|
|
|
|
test_no_hw_watchpoints
|
|
|
|
proc do_tests {} {
|
|
global testfile
|
|
global no_hw
|
|
|
|
clean_restart $testfile
|
|
|
|
if {$no_hw || [target_info exists gdb,no_hardware_watchpoints]} {
|
|
gdb_test_no_output "set can-use-hw-watchpoints 0" ""
|
|
}
|
|
|
|
if [initialize] then {
|
|
|
|
test_simple_watchpoint
|
|
|
|
test_disabling_watchpoints
|
|
|
|
if ![target_info exists gdb,cannot_call_functions] {
|
|
test_stepping
|
|
}
|
|
}
|
|
|
|
# Tests below don't rely on the markers and watchpoint set by
|
|
# `initialize' anymore.
|
|
clean_restart $testfile
|
|
|
|
if {$no_hw || [target_info exists gdb,no_hardware_watchpoints]} {
|
|
gdb_test_no_output "set can-use-hw-watchpoints 0" ""
|
|
}
|
|
|
|
# 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
|
|
}
|
|
|
|
test_complex_watchpoint
|
|
|
|
test_inaccessible_watchpoint
|
|
|
|
test_watchpoint_and_breakpoint
|
|
|
|
test_watchpoint_in_big_blob
|
|
|
|
test_constant_watchpoint
|
|
|
|
test_disable_enable_software_watchpoint
|
|
|
|
test_watch_location
|
|
|
|
test_wide_location_1
|
|
test_wide_location_2
|
|
|
|
test_watch_register_location
|
|
}
|
|
|
|
# On targets that can do hardware watchpoints, run the tests twice:
|
|
# once with hardware watchpoints enabled; another with hardware
|
|
# watchpoints force-disabled.
|
|
|
|
do_tests
|
|
if ![target_info exists gdb,no_hardware_watchpoints] {
|
|
with_test_prefix "no-hw" {
|
|
set no_hw 1
|
|
do_tests
|
|
}
|
|
}
|
|
|
|
# Restore old timeout
|
|
set timeout $prev_timeout
|
|
verbose "Timeout now $timeout sec.\n"
|