gdb/testsuite/gdb.multi/watchpoint-multi.exp

   1 # Copyright 2012-2021 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 standard_testfile
  17 set executable ${testfile}
  18
  19 # Multiple inferiors are needed, therefore both native and extended gdbserver
  20 # modes are supported.  Only non-extended gdbserver is not supported.
  21 if [use_gdb_stub] {
  22     untested "using gdb stub"
  23     return
  24 }
  25
  26 # Do not use simple hardware watchpoints ("watch") as its false hit may be
  27 # unnoticed by GDB if it reads it still has the same value.
  28 if [skip_hw_watchpoint_access_tests] {
  29     untested "${testfile} (no hardware access watchpoints)"
  30     return
  31 }
  32
  33 if { [gdb_compile_pthreads "${srcdir}/${subdir}/${srcfile}" "${binfile}" executable {debug}] != "" } {
  34     untested "failed to compile"
  35     return -1
  36 }
  37
  38 clean_restart $executable
  39
  40 # Simulate non-stop which also uses breakpoint always-inserted.
  41 gdb_test_no_output "set breakpoint always-inserted on"
  42 # displaced-stepping is also needed as other GDB sometimes still removes the
  43 # breakpoints, even with always-inserted on.
  44 # Without the support this test just is not as thorough as it could be.
  45 if [support_displaced_stepping] {
  46     gdb_test_no_output "set displaced-stepping on"
  47 }
  48
  49 # Debugging of this testcase:
  50 #gdb_test_no_output "maintenance set show-debug-regs on"
  51 #gdb_test_no_output "set debug infrun 1"
  52
  53 gdb_breakpoint main {temporary}
  54 gdb_test "run" "Temporary breakpoint.* main .*" "start to main inferior 1"
  55
  56 gdb_test "add-inferior" "Added inferior 2 on connection .*" "add inferior 2"
  57 gdb_test "inferior 2" "witching to inferior 2 .*" "switch to inferior 2, first time"
  58 gdb_load $binfile
  59
  60 gdb_breakpoint main {temporary}
  61 gdb_test "run" "Temporary breakpoint.* main .*" "start to main inferior 2"
  62
  63 gdb_test "awatch c" \
  64     "Hardware access \\(read/write\\) watchpoint \[0-9\]+: c" \
  65     "awatch c on inferior 2"
  66
  67 gdb_breakpoint "marker_exit"
  68
  69 gdb_test "inferior 1" "witching to inferior 1 .*" "switch back to inferior 1"
  70
  71 if [skip_hw_watchpoint_multi_tests] {
  72     # On single hardware watchpoint at least test the watchpoint in inferior
  73     # 2 is not hit.
  74 } else {
  75     gdb_test "awatch b" \
  76         "Hardware access \\(read/write\\) watchpoint \[0-9\]+: b" \
  77         "awatch b on inferior 1"
  78
  79     gdb_test "inferior 2" "witching to inferior 2 .*" "switch to inferior 2 again"
  80
  81     # FAIL would be a hit on watchpoint for `b' - that one is for the other
  82     # inferior.
  83     gdb_test "continue" \
  84         "Hardware access \\(read/write\\) watchpoint \[0-9\]+: c\r\n\r\nOld value = 0\r\nNew value = 3\r\n.*" \
  85         "catch c on inferior 2"
  86
  87     gdb_test "continue" "Breakpoint \[0-9\]+, marker_exit .*" "catch marker_exit in inferior 2"
  88
  89     gdb_test "inferior 1" "witching to inferior 1 .*" "switch back to inferior 1 again"
  90
  91     gdb_test "continue" "Hardware access \\(read/write\\) watchpoint \[0-9\]+: b\r\n\r\nOld value = 0\r\nNew value = 2\r\n.*" "catch b on inferior 1"
  92 }
  93
  94 gdb_test "continue" "Breakpoint \[0-9\]+, marker_exit .*" "catch marker_exit in inferior 1"