* fork-child.c (startup_inferior) [STARTUP_INFERIOR]: If defined,

	call it instead of doing normal loop.
	* infcmd.c (attach_command): Don't call wait_for_inferior if
	running	Mach 3.
	* infrun.c (proceed) [PREPARE_TO_PROCEED]: If defined, call
	hook that can decide whether to step over the next breakpoint.
	* utils.c (wrap_here): Abort if wrap_buffer not allocated.
	(request_quit) [REQUEST_QUIT]: If defined, call it instead of
	doing normal quit.

	* Makefile.in (stop-gdb): New target.
	* stop-gdb.c: New file, utility to get attention of waiting GDBs
	in Mach 3.

1 files changed, 110 insertions, 0 deletions

diff --git a/gdb/stop-gdb.c b/gdb/stop-gdb.c
new file mode 100644
index 0000000..abb3d69
--- /dev/null
+++ b/gdb/stop-gdb.c
@@ -0,0 +1,110 @@
+/* A client to make GDB return to command level in Mach 3.
+   Copyright (C) 1992, 1993 Free Software Foundation, Inc.
+
+This file is part of GDB.
+
+This program is free software; you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation; either version 2 of the License, or
+(at your option) any later version.
+
+This program is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with this program; if not, write to the Free Software
+Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.  */
+
+/* Authors: Jukka Virtanen <jtv@hut.fi> and Peter Stout <pds@cs.cmu.edu>.
+
+   A simple client to make GDB (versions 4.4 and later) on Mach 3 return
+   to the command level when it is waiting for the inferior to stop.
+  
+   Actions: Lookup the send right to the GDB message port from the
+            NetMsgServer.
+
+ 	    Send an asynchronous message with msgh_id
+ 	    GDB_MESSAGE_ID_STOP to that port.
+   */
+
+#include <stdio.h>
+
+#include "defs.h"
+
+#include <mach.h>
+#include <mach/message.h>
+#include <mach_error.h>
+#include <servers/netname.h>
+#include <servers/netname_defs.h>
+
+void
+main (argc, argv)
+     int argc;
+     char **argv;
+{
+  kern_return_t kr;
+  mach_msg_header_t msg;
+  mach_port_t gdb_port;
+  char *host;
+  char *name;
+
+  if (argc == 1)
+    argv[argc++] = GDB_DEF_NAME;
+
+  if (argc != 2)
+    {
+      fprintf (stderr, "Usage : %s <GDB name>\n", argv[0]);
+      exit (1);
+    }
+
+  /* Allow the user to specify a remote host.  */
+  host = strchr (argv[1], '@');
+  if (host)
+    *(host++) = '\0';
+  else
+    host = (char *) "";
+
+  name = malloc (strlen (argv[1]) + sizeof(GDB_NAME_PREFIX));
+  if (name == NULL)
+    {
+      fprintf (stderr, "Unable to allocate memory for name.");
+      exit (1);
+    }
+
+  strcpy (name, GDB_NAME_PREFIX);
+  strcat (name, argv[1]);
+
+  /* Look up the GDB service port.  For convenience, add the
+     GDB_NAME_PREFIX the argument before looking up the name.
+     For backwards compatibility, do it without.  */
+
+  kr = netname_look_up (name_server_port, host, name, &gdb_port);
+  if (kr == NETNAME_NOT_CHECKED_IN)
+    kr = netname_look_up (name_server_port, host, argv[1], &gdb_port);
+  if (kr != KERN_SUCCESS)
+    {
+      fprintf (stderr, "Unable to lookup the GDB service port: %s.\n",
+	       mach_error_string(kr));
+      exit(1);
+    }
+
+  /* Code generated by mig stub generator, with minor cleanups :-)
+
+     simpleroutine stop_inferior(gdb_port : mach_port_t);  */
+
+  msg.msgh_bits = MACH_MSGH_BITS (MACH_MSG_TYPE_COPY_SEND, 0);
+  msg.msgh_remote_port = gdb_port;
+  msg.msgh_local_port  = MACH_PORT_NULL;
+  msg.msgh_size	       = sizeof(msg);
+  msg.msgh_seqno       = 0;
+  msg.msgh_id          = GDB_MESSAGE_ID_STOP;
+
+  kr = mach_msg_send (&msg);
+  if (kr != KERN_SUCCESS)
+    fprintf (stderr, "Message not sent, return code %d : %s\n", kr,
+	     mach_error_string (kr));
+
+  exit (kr != KERN_SUCCESS);
+}