* defs.h maint.c monitor.c remote-mips.c remote.c: Add support

[binutils-gdb.git] / gdb / remote-mips.c

diff --git a/gdb/remote-mips.c b/gdb/remote-mips.c
index 170a6ba0746b8521c4f8729a3531b19e15454656..6195dbbb0ba72012ee916b17a857fe3592df826c 100644 (file)
--- a/gdb/remote-mips.c
+++ b/gdb/remote-mips.c
@@ -1,5 +1,5 @@
 /* Remote debugging interface for MIPS remote debugging protocol.
-   Copyright 1993, 1994 Free Software Foundation, Inc.
+   Copyright 1993, 1994, 1995 Free Software Foundation, Inc.
    Contributed by Cygnus Support.  Written by Ian Lance Taylor
    <ian@cygnus.com>.
 
@@ -128,7 +128,7 @@ extern struct target_ops mips_ops;
        The value is
                0x40 + seq
        An acknowlegment packet contains the sequence number of the
-       packet being acknowledged plus 1 module 64.  Data packets are
+       packet being acknowledged plus 1 modulo 64.  Data packets are
        transmitted in sequence.  There may only be one outstanding
        unacknowledged data packet at a time.  The sequence numbers
        are independent in each direction.  If an acknowledgement for
@@ -334,10 +334,24 @@ mips_readchar (timeout)
   int ch;
   static int state = 0;
   static char nextstate[5] = { '<', 'I', 'D', 'T', '>' };
+#ifdef MAINTENANCE_CMDS
+  int i;
+
+  i = timeout;
+  if (i == -1 && watchdog > 0)
+    i = watchdog;
+#endif
 
   if (state == 5) 
     timeout = 1;
   ch = SERIAL_READCHAR (mips_desc, timeout);
+#ifdef MAINTENANCE_CMDS
+  if (ch == SERIAL_TIMEOUT && timeout == -1) /* Watchdog went off */
+    {
+      target_mourn_inferior ();
+      error ("Watchdog has expired.  Target detached.\n");
+    }
+#endif
   if (ch == SERIAL_EOF)
     mips_error ("End of file from remote");
   if (ch == SERIAL_ERROR)
@@ -373,7 +387,10 @@ mips_readchar (timeout)
 
       state = 0;
 
-      mips_error ("Remote board reset");
+      /* At this point, about the only thing we can do is abort the command
+        in progress and get back to command level as quickly as possible. */
+
+      error ("Remote board reset, debug protocol re-initialized.");
     }
 
   if (ch == nextstate[state])
@@ -874,7 +891,7 @@ mips_request (cmd, addr, data, perr, timeout)
   char rcmd;
   int rerrflg;
   int rresponse;
-  
+
   if (cmd != '\0')
     {
       if (mips_need_reply)
@@ -1031,6 +1048,18 @@ device is attached to the target board (e.g., /dev/ttya).");
   ptype = mips_read_processor_type ();
   if (ptype)
     mips_set_processor_type_command (strsave (ptype), 0);
+
+/* This is really the job of start_remote however, that makes an assumption
+   that the target is about to print out a status message of some sort.  That
+   doesn't happen here (in fact, it may not be possible to get the monitor to
+   send the appropriate packet).  */
+
+  flush_cached_frames ();
+  registers_changed ();
+  stop_pc = read_pc ();
+  set_current_frame (create_new_frame (read_fp (), stop_pc));
+  select_frame (get_current_frame (), 0);
+  print_stack_frame (selected_frame, -1, 1);
 }
 
 /* Close a connection to the remote board.  */