gdb/testsuite/gdb.arch/aarch64-brk-patterns.exp

   1 # Copyright 2020-2024 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 # This file is part of the gdb testsuite.
  17
  18 # Test if GDB stops at various BRK instruction patterns inserted into
  19 # the code.
  20
  21 require is_aarch64_target
  22
  23 standard_testfile
  24 if {[prepare_for_testing "failed to prepare" ${testfile} ${srcfile}]} {
  25     return -1
  26 }
  27
  28 if {![runto_main]} {
  29     return -1
  30 }
  31
  32 # Number of expected SIGTRAP's to get.  This needs to be kept in sync
  33 # with the source file.
  34 set expected_traps 3
  35 set keep_going 1
  36 set count 0
  37
  38 # Make sure we have a lower timeout in case GDB doesn't support a particular
  39 # instruction.  Such instruction will cause GDB to loop infinitely.
  40 while {$keep_going} {
  41     # Continue to next program breakpoint instruction.
  42     gdb_test_multiple "continue" "brk instruction $count causes SIGTRAP" {
  43         -re "Program received signal SIGTRAP, Trace/breakpoint trap.*$gdb_prompt $" {
  44             pass $gdb_test_name
  45
  46             # Insert a breakpoint at the program breakpoint instruction so
  47             # GDB can step over it.
  48             gdb_test "break" \
  49                 "Breakpoint $decimal at $hex: file .*$srcfile, line $decimal.*" \
  50                 "insert breakpoint at brk instruction $count"
  51             incr count
  52         }
  53         # We've reached the end of the test.
  54         -re "exited normally.*$gdb_prompt $" {
  55             set keep_going 0
  56         }
  57         timeout {
  58             fail $gdb_test_name
  59             set keep_going 0
  60         }
  61     }
  62 }
  63
  64 # Verify we stopped at the expected number of SIGTRAP's.
  65 gdb_assert {$count == $expected_traps} "all brk instructions triggered"