* gdbserver/server.c (main): Silently accept query requests

	and send back a zero length acknowledge.

1 files changed, 118 insertions, 0 deletions

diff --git a/gdb/gdbserver/server.c b/gdb/gdbserver/server.c
new file mode 100644
index 00000000000..a38fda6fbc2
--- /dev/null
+++ b/gdb/gdbserver/server.c
@@ -0,0 +1,118 @@
+/* Main code for remote server for GDB.
+   Copyright (C) 1989, 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.  */
+
+#include "server.h"
+
+main (argc, argv)
+     int argc;
+     char *argv[];
+{
+  char ch, status, own_buf[2000], mem_buf[2000];
+  int i = 0;
+  unsigned char signal;
+  unsigned int mem_addr, len;
+
+  if (setjmp(toplevel))
+    {
+      fprintf(stderr, "Exiting\n");
+      exit(1);
+    }
+
+  if (argc < 3)
+    error("Usage: gdbserver tty prog [args ...]");
+
+  inferior_pid = create_inferior (argv[2], &argv[2]);
+  fprintf (stderr, "Process %s created; pid = %d\n", argv[2], inferior_pid);
+
+  signal = mywait (&status);	/* Wait till we are at 1st instr in prog */
+
+  /* We are now stopped at the first instruction of the target process */
+
+  while (1)
+    {
+      remote_open (argv[1]);
+
+      setjmp(toplevel);
+      while (getpkt (own_buf) > 0)
+	{
+	  i = 0;
+	  ch = own_buf[i++];
+	  switch (ch)
+	    {
+	    case '?':
+	      prepare_resume_reply (own_buf, status, signal);
+	      break;
+	    case 'g':
+	      convert_int_to_ascii (registers, own_buf, REGISTER_BYTES);
+	      break;
+	    case 'G':
+	      convert_ascii_to_int (&own_buf[1], registers, REGISTER_BYTES);
+	      store_inferior_registers (-1);
+	      write_ok (own_buf);
+	      break;
+	    case 'm':
+	      decode_m_packet (&own_buf[1], &mem_addr, &len);
+	      read_inferior_memory (mem_addr, mem_buf, len);
+	      convert_int_to_ascii (mem_buf, own_buf, len);
+	      break;
+	    case 'M':
+	      decode_M_packet (&own_buf[1], &mem_addr, &len, mem_buf);
+	      if (write_inferior_memory (mem_addr, mem_buf, len) == 0)
+		write_ok (own_buf);
+	      else
+		write_enn (own_buf);
+	      break;
+	    case 'c':
+	      myresume (0, 0);
+	      signal = mywait (&status);
+	      prepare_resume_reply (own_buf, status, signal);
+	      break;
+	    case 's':
+	      myresume (1, 0);
+	      signal = mywait (&status);
+	      prepare_resume_reply (own_buf, status, signal);
+	      break;
+	    case 'k':
+	      fprintf (stderr, "Killing inferior\n");
+	      kill_inferior ();
+	      inferior_pid = create_inferior (argv[2], &argv[2]);
+	      fprintf (stderr, "Process %s created; pid = %d\n", argv[2],
+		       inferior_pid);
+	      signal = mywait (&status); /* Wait till we are at 1st instr in prog */
+	      break;
+	    case 'q':
+	      own_buf[0] = '\0';
+	      break;
+	    default:
+	      printf ("\nUnknown option chosen by master\n");
+	      write_enn (own_buf);
+	      break;
+	    }
+
+	  putpkt (own_buf);
+	}
+
+      /* We come here when getpkt fails.  Close the connection, and re-open it
+         at the top of the loop.  */
+
+      fprintf (stderr, "Remote side has terminated connection.  GDBserver will reopen the connection.\n");
+
+      remote_close ();
+    }
+}