| 1 | # Copyright 2014-2016 Free Software Foundation, Inc. |
| 2 | |
| 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. |
| 7 | # |
| 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. |
| 12 | # |
| 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/>. |
| 15 | |
| 16 | # Test that removing a single-step breakpoint that is placed at the |
| 17 | # same address as another regular breakpoint leaves the regular |
| 18 | # breakpoint inserted. |
| 19 | |
| 20 | standard_testfile |
| 21 | set executable ${testfile} |
| 22 | |
| 23 | if {[prepare_for_testing "failed to prepare" $testfile $srcfile debug]} { |
| 24 | return -1 |
| 25 | } |
| 26 | |
| 27 | if ![runto_main] then { |
| 28 | fail "Can't run to main" |
| 29 | return 0 |
| 30 | } |
| 31 | |
| 32 | gdb_breakpoint [gdb_get_line_number "set foo break here"] |
| 33 | gdb_continue_to_breakpoint "first breakpoint" ".* set foo break here .*" |
| 34 | |
| 35 | # Get the address of the next instruction and set a breakpoint there. |
| 36 | set next_insn_addr "" |
| 37 | set test "disassemble main" |
| 38 | gdb_test_multiple $test $test { |
| 39 | -re ".*=> $hex <\\+$decimal>:\[^\r\n\]+\r\n ($hex) .*$gdb_prompt $" { |
| 40 | set next_insn_addr $expect_out(1,string) |
| 41 | pass $test |
| 42 | } |
| 43 | } |
| 44 | |
| 45 | if { $next_insn_addr == "" } { |
| 46 | return -1 |
| 47 | } |
| 48 | |
| 49 | gdb_test "b *$next_insn_addr" "Breakpoint .*" |
| 50 | |
| 51 | # So that GDB doesn't try to remove the regular breakpoint when the |
| 52 | # step finishes. |
| 53 | gdb_test_no_output "set breakpoint always-inserted on" |
| 54 | |
| 55 | # On software single-step targets, this step will want to momentarily |
| 56 | # place a single-step breakpoint over the bar breakpoint, and then |
| 57 | # remove it. But, a regular breakpoint is planted there already, and |
| 58 | # with always-inserted on, should remain planted when the step |
| 59 | # finishes. |
| 60 | gdb_test "si" "Breakpoint .*" |
| 61 | |
| 62 | # If the breakpoint is still correctly inserted, then this jump should |
| 63 | # re-trigger it. Otherwise, GDB will lose control and the program |
| 64 | # will exit. See PR breakpoints/17000. |
| 65 | gdb_test "jump *\$pc" "Breakpoint .*" |