100 lines
3 KiB
Text
100 lines
3 KiB
Text
# Copyright 2014-2016 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 is part of the gdb testsuite
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standard_testfile
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if {[prepare_for_testing "failed to prepare" $testfile $srcfile debug]} {
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return -1
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}
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# Set a watchpoint watching EXPR.
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proc watch { expr } {
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global decimal
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set expr_re [string_to_regexp $expr]
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gdb_test "watch $expr" \
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"\(Hardware \)?\[Ww\]atchpoint $decimal: $expr_re"
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}
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# Continue inferior execution, expecting the watchpoint EXPR to be triggered
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# having old value OLD and new value NEW.
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proc expect_watchpoint { expr old new } {
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with_test_prefix "$expr: $old->$new" {
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set expr_re [string_to_regexp $expr]
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gdb_test "print $expr" "\\$\\d+ = $old\\s" "print expression before"
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gdb_test "continue" "$expr_re\\s.*Old value = $old\\s+New value = $new\\s.*"
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gdb_test "print $expr" "\\$\\d+ = $new\\s" "print expression after"
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}
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}
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# Check that -location watchpoints against bitfields trigger properly.
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proc test_watch_location {} {
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with_test_prefix "-location watch against bitfields" {
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if {![runto_main]} {
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return -1
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}
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watch "-location q.a"
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watch "-location q.e"
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expect_watchpoint "q.a" 0 1
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expect_watchpoint "q.e" 0 5
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expect_watchpoint "q.a" 1 0
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expect_watchpoint "q.e" 5 4
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# It'll execute a large amount of code with software watchpoint
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# enabled, which means GDB will single stepping all the way
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# through til the inferior exits. Increase the timeout by a
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# factor of 4.
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with_timeout_factor 4 {
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gdb_continue_to_end
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}
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}
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}
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# Check that regular watchpoints against expressions involving
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# bitfields trigger properly.
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proc test_regular_watch {} {
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with_test_prefix "regular watch against bitfields" {
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if {![runto_main]} {
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return -1
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}
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watch "q.d + q.f + q.g"
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expect_watchpoint "q.d + q.f + q.g" 0 4
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expect_watchpoint "q.d + q.f + q.g" 4 10
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expect_watchpoint "q.d + q.f + q.g" 10 3
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expect_watchpoint "q.d + q.f + q.g" 3 2
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expect_watchpoint "q.d + q.f + q.g" 2 1
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expect_watchpoint "q.d + q.f + q.g" 1 0
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# It'll execute a large amount of code with software watchpoint
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# enabled, which means GDB will single stepping all the way
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# through til the inferior exits. Increase the timeout by a
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# factor of 4.
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with_timeout_factor 4 {
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gdb_continue_to_end
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}
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}
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}
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# Disable hardware watchpoints if the target does not support them.
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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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test_watch_location
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test_regular_watch
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