98 lines
3.8 KiB
Plaintext
98 lines
3.8 KiB
Plaintext
# Copyright 2008-2020 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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# Test that 'set breakpoint always-inserted 1' is not a brick
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# Also verifies that breakpoint enabling/disabling works properly
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# with duplicated breakpoints.
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if { [prepare_for_testing "failed to prepare" break-always break-always.c] } {
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return -1
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}
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set bar_location [gdb_get_line_number "break in bar" break-always.c]
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gdb_test_no_output "set breakpoint always-inserted on"
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gdb_test "show breakpoint always-inserted" "mode is on\." \
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"confirm breakpoint always-inserted"
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runto foo
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gdb_test "break bar" "Breakpoint 2.*" "set breakpoint on bar"
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gdb_test "break bar" "Note: breakpoint 2 also set.*Breakpoint 3.*" "set 2nd breakpoint on bar"
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gdb_test "break bar" "Note: breakpoints 2 and 3 also set.*Breakpoint 4.*" "set 3rd breakpoint on bar"
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gdb_test "break bar" "Note: breakpoints 2, 3 and 4 also set.*Breakpoint 5.*" "set 4th breakpoint on bar"
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gdb_test "info breakpoints" "keep y.*keep y.*keep y.*keep y.*keep y.*" "initial check breakpoint state"
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gdb_test_no_output "disable" "initial disable all breakpoints"
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gdb_test_no_output "enable" "initial enable all breakpoints"
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gdb_test_no_output "disable" "re-disable all breakpoints"
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gdb_test_no_output "enable 3" "enable 3.A"
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gdb_test_no_output "disable 3" "disable 3.B"
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gdb_test_no_output "enable 3" "enable 3.C"
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gdb_test_no_output "enable 2" "enable 2.D"
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gdb_test_no_output "disable 2" "disable 2.E"
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gdb_test_no_output "disable 3" "disable 3.F"
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gdb_test_no_output "enable 3" "enable 3.G"
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gdb_test_no_output "enable 2" "enable 2.H"
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gdb_test_no_output "disable 2" "disable 2.I"
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gdb_test "info breakpoints" "keep n.*keep n.*keep y.*keep n.*keep n.*" "before re-enable check breakpoint state"
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gdb_test_no_output "enable" "re-enable all breakpoints"
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set bp_address 0
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set test "set breakpoint on bar 2"
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gdb_test_multiple "break bar" $test {
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-re "Breakpoint 6 at ($hex).*$gdb_prompt $" {
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set bp_address $expect_out(1,string)
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pass $test
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}
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}
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# Save the original INSN under the breakpoint.
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gdb_test "p /x \$shadow = *(char *) $bp_address" \
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" = $hex" \
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"save shadow"
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# Overwrite memory where the breakpoint is planted. GDB should update
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# its memory breakpoint's shadows, to account for the new contents,
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# and still leave the breakpoint insn planted. Try twice with
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# different values, in case we happen to be writting exactly what was
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# there already.
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foreach test_value {0 1} {
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set write_test "write $test_value to breakpoint's address"
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gdb_test_multiple "p /x *(char *) $bp_address = $test_value" $write_test {
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-re "Cannot access memory at address $hex.*$gdb_prompt $" {
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# Some targets do not allow manually writing a breakpoint to a
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# certain memory address, like QEMU. In that case, just bail out.
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unsupported "cannot write to address $bp_address"
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return -1
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}
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-re " = .*$gdb_prompt $" {
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pass $write_test
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}
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}
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set read_test "read back $test_value from the breakpoint's address"
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gdb_test "p /x *(char *) $bp_address" " = 0x$test_value" $read_test
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}
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# Restore the original contents.
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gdb_test "p /x *(char *) $bp_address = \$shadow" "" \
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"restore the original contents"
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# Run to breakpoint.
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gdb_continue_to_breakpoint "bar" ".*break-always.c:$bar_location.*"
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