gdb/stop-gdb.c

   1 /* A client to make GDB return to command level in Mach 3.
   2    Copyright (C) 1992, 1993 Free Software Foundation, Inc.
   3
   4 This file is part of GDB.
   5
   6 This program is free software; you can redistribute it and/or modify
   7 it under the terms of the GNU General Public License as published by
   8 the Free Software Foundation; either version 2 of the License, or
   9 (at your option) any later version.
  10
  11 This program is distributed in the hope that it will be useful,
  12 but WITHOUT ANY WARRANTY; without even the implied warranty of
  13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14 GNU General Public License for more details.
  15
  16 You should have received a copy of the GNU General Public License
  17 along with this program; if not, write to the Free Software
  18 Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.  */
  19
  20 /* Authors: Jukka Virtanen <jtv@hut.fi> and Peter Stout <pds@cs.cmu.edu>.
  21
  22    A simple client to make GDB (versions 4.4 and later) on Mach 3 return
  23    to the command level when it is waiting for the inferior to stop.
  24
  25    Actions: Lookup the send right to the GDB message port from the
  26             NetMsgServer.
  27
  28             Send an asynchronous message with msgh_id
  29             GDB_MESSAGE_ID_STOP to that port.
  30    */
  31
  32 #include <stdio.h>
  33
  34 #include "defs.h"
  35
  36 #include <mach.h>
  37 #include <mach/message.h>
  38 #include <mach_error.h>
  39 #include <servers/netname.h>
  40 #include <servers/netname_defs.h>
  41
  42 void
  43 main (argc, argv)
  44      int argc;
  45      char **argv;
  46 {
  47   kern_return_t kr;
  48   mach_msg_header_t msg;
  49   mach_port_t gdb_port;
  50   char *host;
  51   char *name;
  52
  53   if (argc == 1)
  54     argv[argc++] = GDB_DEF_NAME;
  55
  56   if (argc != 2)
  57     {
  58       fprintf (stderr, "Usage : %s <GDB name>\n", argv[0]);
  59       exit (1);
  60     }
  61
  62   /* Allow the user to specify a remote host.  */
  63   host = strchr (argv[1], '@');
  64   if (host)
  65     *(host++) = '\0';
  66   else
  67     host = (char *) "";
  68
  69   name = malloc (strlen (argv[1]) + sizeof(GDB_NAME_PREFIX));
  70   if (name == NULL)
  71     {
  72       fprintf (stderr, "Unable to allocate memory for name.");
  73       exit (1);
  74     }
  75
  76   strcpy (name, GDB_NAME_PREFIX);
  77   strcat (name, argv[1]);
  78
  79   /* Look up the GDB service port.  For convenience, add the
  80      GDB_NAME_PREFIX the argument before looking up the name.
  81      For backwards compatibility, do it without.  */
  82
  83   kr = netname_look_up (name_server_port, host, name, &gdb_port);
  84   if (kr == NETNAME_NOT_CHECKED_IN)
  85     kr = netname_look_up (name_server_port, host, argv[1], &gdb_port);
  86   if (kr != KERN_SUCCESS)
  87     {
  88       fprintf (stderr, "Unable to lookup the GDB service port: %s.\n",
  89                mach_error_string(kr));
  90       exit(1);
  91     }
  92
  93   /* Code generated by mig stub generator, with minor cleanups :-)
  94
  95      simpleroutine stop_inferior(gdb_port : mach_port_t);  */
  96
  97   msg.msgh_bits = MACH_MSGH_BITS (MACH_MSG_TYPE_COPY_SEND, 0);
  98   msg.msgh_remote_port = gdb_port;
  99   msg.msgh_local_port  = MACH_PORT_NULL;
 100   msg.msgh_size        = sizeof(msg);
 101   msg.msgh_seqno       = 0;
 102   msg.msgh_id          = GDB_MESSAGE_ID_STOP;
 103
 104   kr = mach_msg_send (&msg);
 105   if (kr != KERN_SUCCESS)
 106     fprintf (stderr, "Message not sent, return code %d : %s\n", kr,
 107              mach_error_string (kr));
 108
 109   exit (kr != KERN_SUCCESS);
 110 }