2010-02-23 00:35:17 +01:00
|
|
|
# This testcase is part of GDB, the GNU debugger.
|
|
|
|
|
2018-01-01 05:43:02 +01:00
|
|
|
# Copyright 2010-2018 Free Software Foundation, Inc.
|
2010-02-23 00:35:17 +01:00
|
|
|
|
|
|
|
# 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 is part of the gdb testsuite.
|
|
|
|
|
|
|
|
#
|
|
|
|
# Tests involving read watchpoints, and other kinds of watchpoints
|
|
|
|
# watching the same memory as read watchpoints.
|
|
|
|
#
|
|
|
|
|
test suite update - gdb.base/[t-z]
Convert files gdb.base/[t-z]*.exp to use standard_output_file et al.
* gdb.base/testenv.exp, gdb.base/tui-layout.exp,
gdb.base/twice.exp, gdb.base/type-opaque.exp, gdb.base/unload.exp,
gdb.base/unwindonsignal.exp, gdb.base/valgrind-db-attach.exp,
gdb.base/valgrind-infcall.exp, gdb.base/value-double-free.exp,
gdb.base/varargs.exp, gdb.base/watch-cond-infcall.exp,
gdb.base/watch-cond.exp, gdb.base/watch-non-mem.exp,
gdb.base/watch-read.exp, gdb.base/watch-vfork.exp,
gdb.base/watch_thread_num.exp, gdb.base/watchpoint-cond-gone.exp,
gdb.base/watchpoint-delete.exp, gdb.base/watchpoint-hw.exp,
gdb.base/watchpoint-solib.exp, gdb.base/watchpoint.exp,
gdb.base/watchpoints.exp, gdb.base/wchar.exp, gdb.base/whatis.exp:
Use standard_testfile, standard_output_file, prepare_for_testing,
clean_restart.
2013-06-27 21:00:47 +02:00
|
|
|
standard_testfile .c
|
2010-02-23 00:35:17 +01:00
|
|
|
|
2011-02-21 15:57:38 +01:00
|
|
|
if {[skip_hw_watchpoint_access_tests]} {
|
|
|
|
return 0
|
2010-02-23 00:35:17 +01:00
|
|
|
}
|
|
|
|
|
2016-12-23 17:52:18 +01:00
|
|
|
if { [prepare_for_testing "failed to prepare" ${testfile} ${srcfile}] } {
|
2010-02-23 00:35:17 +01:00
|
|
|
return -1
|
|
|
|
}
|
|
|
|
|
|
|
|
if { ![runto main] } then {
|
|
|
|
fail "run to main"
|
|
|
|
return
|
|
|
|
}
|
|
|
|
|
|
|
|
set read_line [gdb_get_line_number "read line" $srcfile]
|
|
|
|
|
|
|
|
# Test running to a read of `global', with a read watchpoint set
|
|
|
|
# watching it.
|
|
|
|
|
|
|
|
gdb_test "rwatch global" \
|
|
|
|
"Hardware read watchpoint .*: global" \
|
|
|
|
"set hardware read watchpoint on global variable"
|
|
|
|
|
|
|
|
# The first read is on entry to the loop.
|
|
|
|
|
|
|
|
gdb_test "continue" \
|
|
|
|
"read watchpoint .*: global.*.*Value = 0.*in main.*$srcfile:$read_line.*" \
|
|
|
|
"read watchpoint triggers on first read"
|
|
|
|
|
|
|
|
# The second read happens on second loop iteration, after `global'
|
|
|
|
# having been incremented. On architectures where gdb has to emulate
|
|
|
|
# read watchpoints with access watchpoints, this tests the
|
|
|
|
# only-report-if-value-changed logic. On targets that support real
|
|
|
|
# read watchpoints, this tests that GDB ignores the watchpoint's old
|
|
|
|
# value, knowing that some untrapped write could have changed it, and
|
|
|
|
# so reports the read watchpoint unconditionally.
|
|
|
|
|
|
|
|
gdb_test "continue" \
|
|
|
|
"read watchpoint .*: global.*.*Value = 1.*in main.*$srcfile:$read_line.*" \
|
|
|
|
"read watchpoint triggers on read after value changed"
|
|
|
|
|
|
|
|
# The following tests check that when the user sets a write or access
|
|
|
|
# watchpoint watching the same memory as a read watchpoint, GDB also
|
|
|
|
# applies the only-report-if-value-changed logic even on targets that
|
|
|
|
# support real read watchpoints.
|
|
|
|
|
|
|
|
# The program should be stopped at the read line. Set a write
|
|
|
|
# watchpoint (leaving the read watchpoint) and continue. Only the
|
|
|
|
# write watchpoint should be reported as triggering.
|
|
|
|
|
|
|
|
gdb_test "watch global" \
|
|
|
|
"atchpoint .*: global" \
|
|
|
|
"set write watchpoint on global variable"
|
|
|
|
|
|
|
|
gdb_test "continue" \
|
|
|
|
"atchpoint .*: global.*Old value = 1.*New value = 2.*" \
|
|
|
|
"write watchpoint triggers"
|
|
|
|
|
|
|
|
set exp ""
|
|
|
|
set exp "${exp}2.*read watchpoint.*keep y.*global.*breakpoint already hit 2 times.*"
|
|
|
|
set exp "${exp}3.*watchpoint.*keep y.*global.*breakpoint already hit 1 time.*"
|
|
|
|
gdb_test "info watchpoints" \
|
|
|
|
"$exp" \
|
|
|
|
"only write watchpoint triggers when value changes"
|
|
|
|
|
|
|
|
# The program is now stopped at the write line. Continuing should
|
|
|
|
# stop at the read line, and only the read watchpoint should be
|
|
|
|
# reported as triggering.
|
|
|
|
|
|
|
|
gdb_test "continue" \
|
|
|
|
"read watchpoint .*: global.*Value = 2.*in main.*$srcfile:$read_line.*" \
|
|
|
|
"read watchpoint triggers when value doesn't change, trapping reads and writes"
|
|
|
|
|
|
|
|
set exp ""
|
|
|
|
set exp "${exp}2.*read watchpoint.*keep y.*global.*breakpoint already hit 3 times.*"
|
|
|
|
set exp "${exp}3.*watchpoint.*keep y.*global.*breakpoint already hit 1 time.*"
|
|
|
|
gdb_test "info watchpoints" \
|
|
|
|
"$exp" \
|
|
|
|
"only read watchpoint triggers when value doesn't change"
|