gdb/testsuite/gdb.server/connect-with-no-symbol-file.exp

   1 # This testcase is part of GDB, the GNU debugger.
   2
   3 # Copyright 2016-2023 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 # Test GDB's ability to properly connect to GDBserver with no pre-opened
  19 # symbol file.  If GDB is buggy, it will drop the connection when
  20 # it attempts to open the symbol file indicated by GDBserver and fails.
  21 #
  22 # This test is only meaningful for standard remote connections.
  23
  24 load_lib gdbserver-support.exp
  25
  26 standard_testfile
  27
  28 require allow_gdbserver_tests
  29
  30 if { [build_executable "failed to prepare" $testfile $srcfile debug] } {
  31     return -1
  32 }
  33
  34 # Test connecting GDB to GDBserver without loading a symbol file.
  35 #
  36 # SYSROOT is the desired sysroot string
  37 #
  38 # ACTION is the action to perform to the symbol file on the target.
  39 # It can be either "permission" to deny access to the file or "delete"
  40 # to remove the file.
  41 #
  42 proc connect_no_symbol_file { sysroot action } {
  43     global binfile
  44
  45     with_test_prefix "setup" {
  46         # Restore original $binfile.
  47         gdb_remote_download build $binfile.bak $binfile
  48
  49         # Copy the symbol file to the target.
  50         set target_exec [gdb_remote_download target $binfile]
  51
  52         # Make sure we're disconnected, in case we're testing with an
  53         # extended-remote board, therefore already connected.
  54         gdb_test "disconnect" ".*"
  55
  56         # Set sysroot to something non-target and possibly also invalid so that
  57         # GDB is unable to open the symbol file.
  58         gdb_test_no_output "set sysroot $sysroot" "adjust sysroot"
  59
  60         # Start GDBserver.
  61         set res [gdbserver_start "" $target_exec]
  62
  63         set gdbserver_protocol [lindex $res 0]
  64         set gdbserver_gdbport [lindex $res 1]
  65
  66         # Perform test actions to the symbol file on the target.
  67         if {$action == "delete"} {
  68           remote_file target delete $target_exec
  69         } elseif { $action == "permission" } {
  70           remote_exec target "chmod 000 $target_exec"
  71         }
  72
  73         # Connect to GDBserver.
  74         gdb_target_cmd $gdbserver_protocol $gdbserver_gdbport
  75     }
  76
  77     # Check if GDB succeeded connecting to GDBserver by attempting to detach
  78     # from the process.
  79     # Use an explicit fail clause to prevent the implicit clause matching
  80     # "Ending remote debugging" from triggering, which would cause silent
  81     # failure.
  82     set ok 0
  83     gdb_test_multiple "detach" "" {
  84         -re "\r\nDetaching from \[^\r\n\]*" {
  85             set ok 1
  86             exp_continue
  87         }
  88         -re -wrap "" {
  89         }
  90     }
  91     gdb_assert $ok "connection to GDBserver succeeded"
  92 }
  93
  94 # Make sure we have the original symbol file in a safe place to copy from.
  95 gdb_remote_download build $binfile $binfile.bak
  96
  97 # Start with no executable loaded.
  98 clean_restart
  99
 100 # Run the test with different permutations.
 101 foreach_with_prefix sysroot {"" "target:"} {
 102     foreach_with_prefix action {"permission" "delete"} {
 103         connect_no_symbol_file $sysroot $action
 104     }
 105 }