gdb/testsuite/config/gdbserver.exp

   1 # Test framework for GDB (remote protocol) using a "gdbserver",
   2 # ie. a debug agent running as a native process on the same or
   3 # a different host.
   4
   5 #   Copyright (C) 2000, Free Software Foundation, Inc.
   6
   7 # This program is free software; you can redistribute it and/or modify
   8 # it under the terms of the GNU General Public License as published by
   9 # the Free Software Foundation; either version 2 of the License, or
  10 # (at your option) any later version.
  11 #
  12 # This program is distributed in the hope that it will be useful,
  13 # but WITHOUT ANY WARRANTY; without even the implied warranty of
  14 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15 # GNU General Public License for more details.
  16 #
  17 # You should have received a copy of the GNU General Public License
  18 # along with this program; if not, write to the Free Software
  19 # Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
  20
  21 # Please email any bugs, comments, and/or additions to this file to:
  22 # bug-gdb@prep.ai.mit.edu
  23
  24 # This file was written by Michael Snyder. (msnyder@redhat.com)
  25
  26 #
  27 # This module to be used for testing gdb with a "gdbserver"
  28 # built either from libremote or from gdb/gdbserver.
  29 #
  30
  31 # Load the basic testing library, and the remote stuff.
  32 load_lib ../config/monitor.exp
  33
  34 #
  35 # To be addressed or set in your baseboard config file:
  36 #
  37 #   set_board_info gdb_protocol "remote"
  38 #       Unles you have a gdbserver that uses a different protocol...
  39 #
  40 #   set_board_info use_gdb_stub 1
  41 #       This tells the rest of the test suite not to do things
  42 #       like "run" which don't work well on remote targets.
  43 #
  44 #   set_board_info gdb,do_reload_on_run 1
  45 #       Unles you have a gdbserver that can handle multiple sessions.
  46 #
  47 #   set_board_info noargs 1
  48 #       At present there is no provision in the remote protocol
  49 #       for passing arguments.  This test framework does not
  50 #       address the issue, so it's best to set this variable
  51 #       in your baseboard configuration file.
  52 #       FIXME: there's no reason why the test harness couldn't
  53 #       pass commandline args when it spawns gdbserver.
  54 #
  55 #   set_board_info gdb,noinferiorio 1
  56 #       Neither the traditional gdbserver nor the one in libremote
  57 #       can presently capture stdout and relay it to GDB via the
  58 #       'O' packet.  This means that tests involving printf will
  59 #       fail unles you set this varibale in your baseboard
  60 #       configuration file.
  61 #
  62 #   set_board_info gdb,no_hardware_watchpoints 1
  63 #       Unles you have a gdbserver that supports hardware watchpoints.
  64 #       FIXME: gdb should detect if the target doesn't support them,
  65 #       and fall back to using software watchpoints.
  66 #
  67 #   set_board_info gdb_server_prog
  68 #       This will be the path to the gdbserver program you want to test.
  69 #       Defaults to "gdbserver".
  70 #
  71 #   set_board_info sockethost
  72 #       The name of the host computer whose socket is being used.
  73 #       Defaults to "localhost".  Note: old gdbserver requires
  74 #       that you define this, but libremote/gdbserver does not.
  75 #
  76 #   set_board_info socketport
  77 #       Port id to use for socket connection.  If not set explicitly,
  78 #       it will start at "2345" and increment for each use.
  79 #
  80
  81
  82
  83 #
  84 # gdb_load -- load a file into the debugger.
  85 #             return a -1 if anything goes wrong.
  86 #
  87
  88 global server_exec;
  89 global portnum;
  90 set portnum "2345";
  91
  92 proc gdb_load { args } {
  93     global server_exec;
  94     global portnum;
  95
  96     # Port id -- either specified in baseboard file, or managed here.
  97     if [target_info exists gdb,socketport] {
  98         set portnum [target_info gdb,socketport];
  99     } else {
 100         # Bump the port number to avoid conflicts with hung ports.
 101         incr portnum;
 102     }
 103
 104     # Extract the local and remote host ids from the target board struct.
 105
 106     if [target_info exists sockethost] {
 107         set debughost  [target_info sockethost];
 108     } else {
 109         set debughost "localhost:";
 110     }
 111     # Extract the protocol
 112     if [target_info exists gdb_protocol] {
 113         set protocol [target_info gdb_protocol];
 114     } else {
 115         set protocol "remote";
 116     }
 117
 118     # Extract the name of the gdbserver, if known (default 'gdbserver').
 119     if [target_info exists gdb_server_prog] {
 120         set gdbserver [target_info gdb_server_prog];
 121     } else {
 122         set gdbserver "gdbserver";
 123     }
 124     # Extract the socket hostname
 125     if [target_info exists sockethost] {
 126         set sockethost [target_info sockethost];
 127     } else {
 128         set sockethost ""
 129     }
 130
 131     # Export the host:port pair.
 132     set gdbport $debughost$portnum;
 133
 134     if { $args == "" || $args == "{}" } {
 135         if [info exists server_exec] {
 136             set args $server_exec;
 137         } else {
 138             send_gdb "info files\n";
 139             gdb_expect 30 {
 140                 -re "Symbols from \"(\[^\"\]+)\"" {
 141                     set args $expect_out(1,string);
 142                     exp_continue;
 143                 }
 144                 -re "Local exec file:\[\r\n\]+\[ \t\]*`(\[^'\]+)'," {
 145                     set args $expect_out(1,string);
 146                     exp_continue;
 147                 }
 148                 -re "$gdb_prompt $" { }
 149             }
 150         }
 151     }
 152
 153     # remember new exec file
 154     set server_exec $args;
 155
 156     # Fire off the debug agent
 157     remote_spawn host \
 158             "$gdbserver $sockethost$portnum $args >& /dev/null < /dev/null &" \
 159             writeonly
 160
 161     # Give it a little time to establish
 162     sleep 2
 163
 164     # tell gdb what file we are debugging
 165     if [gdb_file_cmd $args] {
 166         return -1;
 167     }
 168
 169     # attach to the "serial port"
 170     gdb_target_cmd $protocol $gdbport;
 171
 172     return 0;
 173 }
 174