1 # Copyright 2014-2023 Free Software Foundation, Inc.
3 # This program is free software; you can redistribute it and/or modify
4 # it under the terms of the GNU General Public License as published by
5 # the Free Software Foundation; either version 3 of the License, or
6 # (at your option) any later version.
8 # This program is distributed in the hope that it will be useful,
9 # but WITHOUT ANY WARRANTY; without even the implied warranty of
10 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
11 # GNU General Public License for more details.
13 # You should have received a copy of the GNU General Public License
14 # along with this program. If not, see <http://www.gnu.org/licenses/>.
16 if {[skip_hw_breakpoint_tests]} {
22 if {[prepare_for_testing "failed to prepare" ${testfile} ${srcfile}]} {
30 # If we can read the memory at address 0, skip the test.
31 if { [is_address_zero_readable] } {
32 untested "memory at address 0 is readable"
38 # Test whether the target supports hardware breakpoints at all.
41 set test "probe hardware breakpoint support"
42 gdb_test_multiple "hbreak -q main" $test {
43 -re "No hardware breakpoint support in the target.*$gdb_prompt $" {
46 -re "Hardware breakpoints used exceeds limit.*$gdb_prompt $" {
49 -re "Hardware assisted breakpoint.*at.* file .*$srcfile, line.*$gdb_prompt $" {
55 if {!$supports_hbreak} {
56 unsupported "hardware breakpoints"
62 # Force immediate breakpoint insertion.
63 gdb_test_no_output "set breakpoint always-inserted on"
65 # Hardware breakpoints are implemented using a mechanism that is not
66 # dependent on being able to modify the target's memory, we should be
67 # able to set them even in unmapped memory areas.
68 gdb_test "hbreak *0" "Hardware assisted breakpoint \[0-9\]+ at 0x0"
70 gdb_test "info break" "hw breakpoint.*y.*0x0\+\[ \t\]\+" \
71 "info break shows hw breakpoint"
73 gdb_test_no_output "delete \$bpnum" "" "delete" \
74 "delete hw breakpoint"
76 gdb_test "info break" "No breakpoints or watchpoints\." \
77 "info break shows no breakpoints"