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# Copyright 2020-2023 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/>.
# Test that inserting a hardware and a software breakpoint at the same
# address behaves as expected. GDB used to consider hw and sw
# breakpoint locations as duplicate locations, which would lead to bad
# behavior. See PR gdb/25741.
require allow_hw_breakpoint_tests
set test hbreak
set srcfile ${test}.c
if { [prepare_for_testing "failed to prepare" ${test} ${srcfile}] } {
return -1
}
if ![runto_main] {
return -1
}
delete_breakpoints
gdb_test_no_output "set breakpoint always-inserted on"
gdb_test_no_output "set breakpoint condition-evaluation host"
gdb_test_no_output "set confirm off"
# Test inserting a hw breakpoint first, then a sw breakpoint at the
# same address.
with_test_prefix "hw-sw" {
gdb_test "hbreak -q main" \
"Hardware assisted breakpoint .* at .*" \
"hbreak"
gdb_test "break -q main" \
"Note: breakpoint .* also set at .*\r\nBreakpoint .* at .*" \
"break"
# A bad GDB debugging against GDBserver would output a warning
# here:
# delete breakpoints
# warning: Error removing breakpoint 3
# (gdb) FAIL: gdb.base/hw-sw-break-same-address.exp: hw-sw: delete breakpoints
gdb_test_no_output "delete breakpoints"
}
# Now the opposite: test inserting a sw breakpoint first, then a hw
# breakpoint at the same address.
with_test_prefix "sw-hw" {
gdb_test "break -q main" \
"Breakpoint .* at .*" \
"break"
gdb_test "hbreak -q main" \
"Note: breakpoint .* also set at .*\r\nHardware assisted breakpoint .* at .*" \
"hbreak"
gdb_test_no_output "delete breakpoints"
}
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