gdb/testsuite/gdb.base/signest.exp

   1 # This testcase is part of GDB, the GNU debugger.
   2
   3 # Copyright 2011-2019 Free Software Foundation, Inc.
   4
   5 # This program is free software; you can redistribute it and/or modify
   6 # it under the terms of the GNU General Public License as published by
   7 # the Free Software Foundation; either version 3 of the License, or
   8 # (at your option) any later version.
   9 #
  10 # This program is distributed in the hope that it will be useful,
  11 # but WITHOUT ANY WARRANTY; without even the implied warranty of
  12 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13 # GNU General Public License for more details.
  14 #
  15 # You should have received a copy of the GNU General Public License
  16 # along with this program.  If not, see <http://www.gnu.org/licenses/>.
  17
  18 standard_testfile
  19
  20 if [target_info exists gdb,nosignals] {
  21     verbose "Skipping ${testfile}.exp because of nosignals."
  22     return -1
  23 }
  24
  25 if [prepare_for_testing "failed to prepare" ${testfile} ${srcfile} {debug}] {
  26     return -1
  27 }
  28
  29 if ![runto_main] then {
  30     untested "could not run to main"
  31     return -1
  32 }
  33
  34 # If we can examine what's at memory address 0, it is possible that we
  35 # could also execute it.  This could probably make us run away,
  36 # executing random code, which could have all sorts of ill effects,
  37 # especially on targets without an MMU.  Don't run the tests in that
  38 # case.
  39
  40 if { [is_address_zero_readable] } {
  41     untested "memory at address 0 is possibly executable"
  42     return -1
  43 }
  44
  45 # Run until we hit the SIGSEGV (or SIGBUS on some platforms).
  46 gdb_test "continue" \
  47          ".*Program received signal (SIGBUS|SIGSEGV).*bowler.*" \
  48          "continue to fault"
  49
  50 # Insert conditional breakpoint at faulting instruction
  51 gdb_test "break if 0" ".*" "set conditional breakpoint"
  52
  53 # Set SIGSEGV/SIGBUS to pass+nostop
  54 gdb_test "handle SIGSEGV nostop print pass" ".*" "pass SIGSEGV"
  55 gdb_test "handle SIGBUS nostop print pass" ".*" "pass SIGBUS"
  56
  57 # Step off the faulting instruction into the handler, triggering nested faults
  58 gdb_test "continue" \
  59          ".*Program received signal (SIGBUS|SIGSEGV).*Program received signal (SIGBUS|SIGSEGV).*exited normally.*" \
  60          "run through nested faults"
  61