Initial creation of sourceware repository

1 files changed, 0 insertions, 1444 deletions

diff --git a/gdb/ocd.c b/gdb/ocd.c
deleted file mode 100644
index 343fa62..0000000
--- a/gdb/ocd.c
+++ /dev/null
@@ -1,1444 +0,0 @@
-/* Target communications support for Macraigor Systems' On-Chip Debugging
-   Copyright 1996, 1997 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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.  */
-
-#include "defs.h"
-#include "gdbcore.h"
-#include "gdb_string.h"
-#include <fcntl.h>
-#include "frame.h"
-#include "inferior.h"
-#include "bfd.h"
-#include "symfile.h"
-#include "target.h"
-#include "wait.h"
-#include "gdbcmd.h"
-#include "objfiles.h"
-#include "gdb-stabs.h"
-#include "dcache.h"
-#include <sys/types.h>
-#include <signal.h>
-#include "serial.h"
-#include "ocd.h"
-
-/* Prototypes for local functions */
-
-static int ocd_read_bytes PARAMS ((CORE_ADDR memaddr,
-				      char *myaddr, int len));
-
-static int ocd_start_remote PARAMS ((PTR dummy));
-
-static int readchar PARAMS ((int timeout));
-
-static void reset_packet PARAMS ((void));
-
-static void output_packet PARAMS ((void));
-
-static int get_quoted_char PARAMS ((int timeout));
-
-static void put_quoted_char PARAMS ((int c));
-
-static void ocd_interrupt PARAMS ((int signo));
-
-static void ocd_interrupt_twice PARAMS ((int signo));
-
-static void interrupt_query PARAMS ((void));
-
-static unsigned char * ocd_do_command PARAMS ((int cmd, int *statusp, int *lenp));
-
-static void ocd_put_packet PARAMS ((unsigned char *packet, int pktlen));
-
-static unsigned char * ocd_get_packet PARAMS ((int cmd, int *pktlen, int timeout));
-
-static struct target_ops *current_ops = NULL;
-
-static int last_run_status;
-
-/* This was 5 seconds, which is a long time to sit and wait.
-   Unless this is going though some terminal server or multiplexer or
-   other form of hairy serial connection, I would think 2 seconds would
-   be plenty.  */
-
-#if 0
-/* FIXME: Change to allow option to set timeout value on a per target
-   basis. */
-static int remote_timeout = 2;
-#endif
-
-/* Descriptor for I/O to remote machine.  Initialize it to NULL so that
-   ocd_open knows that we don't have a file open when the program
-   starts.  */
-static serial_t ocd_desc = NULL;
-
-void
-ocd_error (s, error_code)
-     char *s;
-     int error_code;
-{
-  char buf[100];
-
-  fputs_filtered (s, gdb_stderr);
-  fputs_filtered (" ", gdb_stderr);
-
-  switch (error_code)
-    {
-    case 0x1: s = "Unknown fault"; break;
-    case 0x2: s = "Power failed"; break;
-    case 0x3: s = "Cable disconnected"; break;
-    case 0x4: s = "Couldn't enter OCD mode"; break;
-    case 0x5: s = "Target stuck in reset"; break;
-    case 0x6: s = "OCD hasn't been initialized"; break;
-    case 0x7: s = "Write verify failed"; break;
-    case 0x8: s = "Reg buff error (during MPC5xx fp reg read/write)"; break;
-    case 0x9: s = "Invalid CPU register access attempt failed"; break;
-    case 0x11: s = "Bus error"; break;
-    case 0x12: s = "Checksum error"; break;
-    case 0x13: s = "Illegal command"; break;
-    case 0x14: s = "Parameter error"; break;
-    case 0x15: s = "Internal error"; break;
-    case 0x80: s = "Flash erase error"; break;
-    default:
-      sprintf (buf, "Unknown error code %d", error_code);
-      s = buf;
-    }
-
-  error (s);
-}
-
-/*  Return nonzero if the thread TH is still alive on the remote system.  */
-
-int
-ocd_thread_alive (th)
-     int th;
-{
-  return 1;
-}
-
-/* Clean up connection to a remote debugger.  */
-
-/* ARGSUSED */
-void
-ocd_close (quitting)
-     int quitting;
-{
-  if (ocd_desc)
-    SERIAL_CLOSE (ocd_desc);
-  ocd_desc = NULL;
-}
-
-/* Stub for catch_errors.  */
-
-static int
-ocd_start_remote (dummy)
-     PTR dummy;
-{
-  unsigned char buf[10], *p;
-  int pktlen;
-  int status;
-  int error_code;
-  int speed;
-  enum ocd_target_type target_type;
-
-  target_type = *(enum ocd_target_type*)dummy;
-
-  immediate_quit = 1;		/* Allow user to interrupt it */
-
-  SERIAL_SEND_BREAK (ocd_desc); /* Wake up the wiggler */
-
-  speed = 80;			/* Divide clock by 4000 */
-
-  buf[0] = OCD_INIT;
-  buf[1] = speed >> 8;
-  buf[2] = speed & 0xff;
-  buf[3] = target_type;
-  ocd_put_packet (buf, 4);	/* Init OCD params */
-  p = ocd_get_packet (buf[0], &pktlen, remote_timeout);
-
-  if (pktlen < 2)
-    error ("Truncated response packet from OCD device");
-
-  status = p[1];
-  error_code = p[2];
-
-  if (error_code != 0)
-    ocd_error ("OCD_INIT:", error_code);
-
-  ocd_do_command (OCD_AYT, &status, &pktlen);
-
-  p = ocd_do_command (OCD_GET_VERSION, &status, &pktlen);
-
-  printf_unfiltered ("[Wiggler version %x.%x, capability 0x%x]\n",
-		     p[0], p[1], (p[2] << 16) | p[3]);
-
-#if 0
-  /* Reset the target */
-
-  ocd_do_command (OCD_RESET_RUN, &status, &pktlen);
-/*  ocd_do_command (OCD_RESET, &status, &pktlen);*/
-#endif
-
-  /* If processor is still running, stop it.  */
-
-  if (!(status & OCD_FLAG_BDM))
-    ocd_stop ();
-
-#if 1
-  /* When using a target box, we want to asynchronously return status when
-     target stops.  The OCD_SET_CTL_FLAGS command is ignored by Wigglers.dll
-     when using a parallel Wiggler */
-  buf[0] = OCD_SET_CTL_FLAGS;
-  buf[1] = 0;
-  buf[2] = 1;
-  ocd_put_packet (buf, 3);
-
-  p = ocd_get_packet (buf[0], &pktlen, remote_timeout);
-
-  if (pktlen < 2)
-    error ("Truncated response packet from OCD device");
-
-  status = p[1];
-  error_code = p[2];
-
-  if (error_code != 0)
-    ocd_error ("OCD_SET_CTL_FLAGS:", error_code);
-#endif
-
-  immediate_quit = 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);
-
-  buf[0] = OCD_LOG_FILE;
-  buf[1] = 3;   /* close existing WIGGLERS.LOG */
-  ocd_put_packet (buf, 2);
-  p = ocd_get_packet (buf[0], &pktlen, remote_timeout);
-
-  buf[0] = OCD_LOG_FILE;
-  buf[1] = 2;   /* append to existing WIGGLERS.LOG */
-  ocd_put_packet (buf, 2);
-  p = ocd_get_packet (buf[0], &pktlen, remote_timeout);
-
-  return 1;
-}
-
-/* Open a connection to a remote debugger.
-   NAME is the filename used for communication.  */
-
-static DCACHE *ocd_dcache;
-
-void
-ocd_open (name, from_tty, target_type, ops)
-     char *name;
-     int from_tty;
-     enum ocd_target_type target_type;
-     struct target_ops *ops;
-{
-  unsigned char buf[10], *p;
-  int status;
-  int pktlen;
-
-  if (name == 0)
-    error ("To open an OCD connection, you need to specify the\n\
-device the OCD device is attached to (e.g. /dev/ttya).");
-
-  target_preopen (from_tty);
-
-  current_ops = ops;
-
-  unpush_target (current_ops);
-
-  ocd_dcache = dcache_init (ocd_read_bytes, ocd_write_bytes);
-
-  if (strncmp(name,"wiggler",7) == 0)
-      {
-	  ocd_desc = SERIAL_OPEN ("ocd");
-          if (!ocd_desc)
-            perror_with_name (name);
-
-	  buf[0] = OCD_LOG_FILE;
-	  buf[1] = 1;	/* open new or overwrite existing WIGGLERS.LOG */
-	  ocd_put_packet (buf, 2);
-	  p = ocd_get_packet (buf[0], &pktlen, remote_timeout);
-
-	  buf[0] = OCD_SET_CONNECTION;
-	  buf[1] = 0x01;	/* atoi (name[11]); */
-	  ocd_put_packet (buf, 2);
-	  p = ocd_get_packet (buf[0], &pktlen, remote_timeout);
-      }
-  else	/* not using Wigglers.dll */
-      {
-          ocd_desc = SERIAL_OPEN (name);
-	  if (!ocd_desc)
-	      perror_with_name (name);
-      }
-
-  if (baud_rate != -1)
-    {
-      if (SERIAL_SETBAUDRATE (ocd_desc, baud_rate))
-	{
-	  SERIAL_CLOSE (ocd_desc);
-	  perror_with_name (name);
-	}
-    }
-
-  SERIAL_RAW (ocd_desc);
-
-  /* If there is something sitting in the buffer we might take it as a
-     response to a command, which would be bad.  */
-  SERIAL_FLUSH_INPUT (ocd_desc);
-
-  if (from_tty)
-    {
-      puts_filtered ("Remote target wiggler connected to ");
-      puts_filtered (name);
-      puts_filtered ("\n");
-    }
-  push_target (current_ops);	/* Switch to using remote target now */
-
-  /* Without this, some commands which require an active target (such as kill)
-     won't work.  This variable serves (at least) double duty as both the pid
-     of the target process (if it has such), and as a flag indicating that a
-     target is active.  These functions should be split out into seperate
-     variables, especially since GDB will someday have a notion of debugging
-     several processes.  */
-
-  inferior_pid = 42000;
-  /* Start the remote connection; if error (0), discard this target.
-     In particular, if the user quits, be sure to discard it
-     (we'd be in an inconsistent state otherwise).  */
-  if (!catch_errors (ocd_start_remote, &target_type,
-		     "Couldn't establish connection to remote target\n",
-		     RETURN_MASK_ALL))
-    {
-      pop_target();
-      error ("Failed to connect to OCD.");
-    }
-}
-
-/* This takes a program previously attached to and detaches it.  After
-   this is done, GDB can be used to debug some other program.  We
-   better not have left any breakpoints in the target program or it'll
-   die when it hits one.  */
-
-void
-ocd_detach (args, from_tty)
-     char *args;
-     int from_tty;
-{
-  if (args)
-    error ("Argument given to \"detach\" when remotely debugging.");
-
-  pop_target ();
-  if (from_tty)
-    puts_filtered ("Ending remote debugging.\n");
-}
-
-/* Tell the remote machine to resume.  */
-
-void
-ocd_resume (pid, step, siggnal)
-     int pid, step;
-     enum target_signal siggnal;
-{
-  int pktlen;
-
-  dcache_flush (ocd_dcache);
-
-  if (step)
-    ocd_do_command (OCD_STEP, &last_run_status, &pktlen);
-  else
-    ocd_do_command (OCD_RUN, &last_run_status, &pktlen);
-}
-
-void
-ocd_stop ()
-{
-  int status;
-  int pktlen;
-
-  ocd_do_command (OCD_STOP, &status, &pktlen);
-
-  if (!(status & OCD_FLAG_BDM))
-    error ("Can't stop target via BDM");
-}
-
-static volatile int ocd_interrupt_flag;
-
-/* Send ^C to target to halt it.  Target will respond, and send us a
-   packet.  */
-
-static void
-ocd_interrupt (signo)
-     int signo;
-{
-  /* If this doesn't work, try more severe steps.  */
-  signal (signo, ocd_interrupt_twice);
-  
-  if (remote_debug)
-    printf_unfiltered ("ocd_interrupt called\n");
-
-  {
-    char buf[1];
-
-    ocd_stop ();
-    buf[0] = OCD_AYT;
-    ocd_put_packet (buf, 1);
-    ocd_interrupt_flag = 1;
-  }
-}
-
-static void (*ofunc)();
-
-/* The user typed ^C twice.  */
-static void
-ocd_interrupt_twice (signo)
-     int signo;
-{
-  signal (signo, ofunc);
-  
-  interrupt_query ();
-
-  signal (signo, ocd_interrupt);
-}
-
-/* Ask the user what to do when an interrupt is received.  */
-
-static void
-interrupt_query ()
-{
-  target_terminal_ours ();
-
-  if (query ("Interrupted while waiting for the program.\n\
-Give up (and stop debugging it)? "))
-    {
-      target_mourn_inferior ();
-      return_to_top_level (RETURN_QUIT);
-    }
-
-  target_terminal_inferior ();
-}
-
-/* If nonzero, ignore the next kill.  */
-static int kill_kludge;
-
-/* Wait until the remote machine stops, then return,
-   storing status in STATUS just as `wait' would.
-   Returns "pid" (though it's not clear what, if anything, that
-   means in the case of this target).  */
-
-int
-ocd_wait ()
-{
-  unsigned char *p;
-  int error_code;
-  int pktlen;
-  char buf[1];
-
-  ocd_interrupt_flag = 0;
-
-  /* Target might already be stopped by the time we get here. */
-  /* If we aren't already stopped, we need to loop until we've dropped
-     back into BDM mode */
-
-  while (!(last_run_status & OCD_FLAG_BDM))
-    {
-      buf[0] = OCD_AYT;
-      ocd_put_packet (buf, 1);
-      p = ocd_get_packet (OCD_AYT, &pktlen, -1);
-
-      ofunc = (void (*)()) signal (SIGINT, ocd_interrupt);
-      signal (SIGINT, ofunc);
-
-      if (pktlen < 2)
-	error ("Truncated response packet from OCD device");
-
-      last_run_status = p[1];
-      error_code = p[2];
-
-      if (error_code != 0)
-	ocd_error ("target_wait:", error_code);
-
-      if (last_run_status & OCD_FLAG_PWF)
-	error ("OCD device lost VCC at BDM interface.");
-      else if (last_run_status & OCD_FLAG_CABLE_DISC)
-	error ("OCD device cable appears to have been disconnected.");
-    }
-
-  if (ocd_interrupt_flag)
-    return 1;
-  else
-    return 0;
-}
-
-/* Read registers from the OCD device.  Specify the starting and ending
-   register number.  Return the number of regs actually read in *NUMREGS.
-   Returns a pointer to a static array containing the register contents.  */
-
-unsigned char *
-ocd_read_bdm_registers (first_bdm_regno, last_bdm_regno, reglen)
-     int first_bdm_regno;
-     int last_bdm_regno;
-     int *reglen;
-{
-  unsigned char buf[10];
-  int i;
-  unsigned char *p;
-  unsigned char *regs;
-  int error_code, status;
-  int pktlen;
-
-  buf[0] = OCD_READ_REGS;
-  buf[1] = first_bdm_regno >> 8;
-  buf[2] = first_bdm_regno & 0xff;
-  buf[3] = last_bdm_regno >> 8;
-  buf[4] = last_bdm_regno & 0xff;
-
-  ocd_put_packet (buf, 5);
-  p = ocd_get_packet (OCD_READ_REGS, &pktlen, remote_timeout);
-
-  status = p[1];
-  error_code = p[2];
-
-  if (error_code != 0)
-    ocd_error ("read_bdm_registers:", error_code);
-
-  i = p[3];
-  if (i == 0)
-    i = 256;
-
-  if (i > pktlen - 4
-      || ((i & 3) != 0))
-    error ("Register block size bad:  %d", i);
-
-  *reglen = i;
-
-  regs = p + 4;
-
-  return regs;
-}
-
-/* Read register BDM_REGNO and returns its value ala read_register() */
-
-CORE_ADDR
-ocd_read_bdm_register (bdm_regno)
-     int bdm_regno;
-{
-  int reglen;
-  unsigned char *p;
-  CORE_ADDR regval;
-
-  p = ocd_read_bdm_registers (bdm_regno, bdm_regno, &reglen);
-  regval = extract_unsigned_integer (p, reglen);
-
-  return regval;
-}
-
-void
-ocd_write_bdm_registers (first_bdm_regno, regptr, reglen)
-     int first_bdm_regno;
-     unsigned char *regptr;
-     int reglen;
-{
-  unsigned char *buf;
-  unsigned char *p;
-  int error_code, status;
-  int pktlen;
-
-  buf = alloca (4 + reglen);
-
-  buf[0] = OCD_WRITE_REGS;
-  buf[1] = first_bdm_regno >> 8;
-  buf[2] = first_bdm_regno & 0xff;
-  buf[3] = reglen;
-  memcpy (buf + 4, regptr, reglen);
-
-  ocd_put_packet (buf, 4 + reglen);
-  p = ocd_get_packet (OCD_WRITE_REGS, &pktlen, remote_timeout);
-
-  if (pktlen < 3)
-    error ("Truncated response packet from OCD device");
-
-  status = p[1];
-  error_code = p[2];
-
-  if (error_code != 0)
-    ocd_error ("ocd_write_bdm_registers:", error_code);
-}
-
-void
-ocd_write_bdm_register (bdm_regno, reg)
-     int bdm_regno;
-     CORE_ADDR reg;
-{
-  unsigned char buf[4];
-
-  store_unsigned_integer (buf, 4, reg);
-
-  ocd_write_bdm_registers (bdm_regno, buf, 4);
-}
-
-void 
-ocd_prepare_to_store ()
-{
-}
-
-/* Write memory data directly to the remote machine.
-   This does not inform the data cache; the data cache uses this.
-   MEMADDR is the address in the remote memory space.
-   MYADDR is the address of the buffer in our space.
-   LEN is the number of bytes.
-
-   Returns number of bytes transferred, or 0 for error.  */
-
-static int write_mem_command = OCD_WRITE_MEM;
-
-int
-ocd_write_bytes (memaddr, myaddr, len)
-     CORE_ADDR memaddr;
-     char *myaddr;
-     int len;
-{
-  char buf[256 + 10];
-  unsigned char *p;
-  int origlen;
-
-  origlen = len;
-
-  buf[0] = write_mem_command;
-  buf[5] = 1;			/* Write as bytes */
-  buf[6] = 0;			/* Don't verify */
-
-  while (len > 0)
-    {
-      int numbytes;
-      int pktlen;
-      int status, error_code;
-
-      numbytes = min (len, 256 - 8);
-
-      buf[1] = memaddr >> 24;
-      buf[2] = memaddr >> 16;
-      buf[3] = memaddr >> 8;
-      buf[4] = memaddr;
-
-      buf[7] = numbytes;
-
-      memcpy (&buf[8], myaddr, numbytes);
-      ocd_put_packet (buf, 8 + numbytes);
-      p = ocd_get_packet (OCD_WRITE_MEM, &pktlen, remote_timeout);
-      if (pktlen < 3)
-	error ("Truncated response packet from OCD device");
-
-      status = p[1];
-      error_code = p[2];
-
-      if (error_code == 0x11)	/* Got a bus error? */
-	{
-	  CORE_ADDR error_address;
-
-	  error_address = p[3] << 24;
-	  error_address |= p[4] << 16;
-	  error_address |= p[5] << 8;
-	  error_address |= p[6];
-	  numbytes = error_address - memaddr;
-
-	  len -= numbytes;
-
-	  errno = EIO;
-
-	  break;
-	}
-      else if (error_code != 0)
-	ocd_error ("ocd_write_bytes:", error_code);
-
-      len -= numbytes;
-      memaddr += numbytes;
-      myaddr += numbytes;
-    }
-
-  return origlen - len;
-}
-
-/* Read memory data directly from the remote machine.
-   This does not use the data cache; the data cache uses this.
-   MEMADDR is the address in the remote memory space.
-   MYADDR is the address of the buffer in our space.
-   LEN is the number of bytes.
-
-   Returns number of bytes transferred, or 0 for error.  */
-
-static int
-ocd_read_bytes (memaddr, myaddr, len)
-     CORE_ADDR memaddr;
-     char *myaddr;
-     int len;
-{
-  char buf[256 + 10];
-  unsigned char *p;
-  int origlen;
-
-  origlen = len;
-
-  buf[0] = OCD_READ_MEM;
-  buf[5] = 1;			/* Read as bytes */
-
-  while (len > 0)
-    {
-      int numbytes;
-      int pktlen;
-      int status, error_code;
-
-      numbytes = min (len, 256 - 7);
-
-      buf[1] = memaddr >> 24;
-      buf[2] = memaddr >> 16;
-      buf[3] = memaddr >> 8;
-      buf[4] = memaddr;
-
-      buf[6] = numbytes;
-
-      ocd_put_packet (buf, 7);
-      p = ocd_get_packet (OCD_READ_MEM, &pktlen, remote_timeout);
-      if (pktlen < 4)
-	error ("Truncated response packet from OCD device");
-
-      status = p[1];
-      error_code = p[2];
-
-      if (error_code == 0x11)	/* Got a bus error? */
-	{
-	  CORE_ADDR error_address;
-
-	  error_address = p[3] << 24;
-	  error_address |= p[4] << 16;
-	  error_address |= p[5] << 8;
-	  error_address |= p[6];
-	  numbytes = error_address - memaddr;
-
-	  len -= numbytes;
-
-	  errno = EIO;
-
-	  break;
-	}
-      else if (error_code != 0)
-	ocd_error ("ocd_read_bytes:", error_code);
-
-      memcpy (myaddr, &p[4], numbytes);
-
-      len -= numbytes;
-      memaddr += numbytes;
-      myaddr += numbytes;
-    }
-
-  return origlen - len;
-}
-
-/* Read or write LEN bytes from inferior memory at MEMADDR, transferring
-   to or from debugger address MYADDR.  Write to inferior if SHOULD_WRITE is
-   nonzero.  Returns length of data written or read; 0 for error.  */
-
-/* ARGSUSED */
-int
-ocd_xfer_memory (memaddr, myaddr, len, should_write, target)
-     CORE_ADDR memaddr;
-     char *myaddr;
-     int len;
-     int should_write;
-     struct target_ops *target;			/* ignored */
-{
-  return dcache_xfer_memory (ocd_dcache, memaddr, myaddr, len, should_write);
-}
-
-void
-ocd_files_info (ignore)
-     struct target_ops *ignore;
-{
-  puts_filtered ("Debugging a target over a serial line.\n");
-}
-
-/* Stuff for dealing with the packets which are part of this protocol.
-   See comment at top of file for details.  */
-
-/* Read a single character from the remote side, handling wierd errors. */
-
-static int
-readchar (timeout)
-     int timeout;
-{
-  int ch;
-
-  ch = SERIAL_READCHAR (ocd_desc, timeout);
-
-  switch (ch)
-    {
-    case SERIAL_EOF:
-      error ("Remote connection closed");
-    case SERIAL_ERROR:
-      perror_with_name ("Remote communication error");
-    case SERIAL_TIMEOUT:
-    default:
-      return ch;
-    }
-}
-
-#if 0
-/* Read a character from the data stream, dequoting as necessary.  SYN is
-   treated special.  Any SYNs appearing in the data stream are returned as the
-   distinct value RAW_SYN (which has a value > 8 bits and therefore cannot be
-   mistaken for real data).  */
-
-static int
-get_quoted_char (timeout)
-     int timeout;
-{
-  int ch;
-
-  ch = readchar (timeout);
-
-  switch (ch)
-    {
-    case SERIAL_TIMEOUT:
-      error ("Timeout in mid-packet, aborting");
-    case SYN:
-      return RAW_SYN;
-    case DLE:
-      ch = readchar (timeout);
-      if (ch == SYN)
-	return RAW_SYN;
-      return ch & ~0100;
-    default:
-      return ch;
-    }
-}
-
-static unsigned char pkt[256 * 2 + 10], *pktp; /* Worst case */
-
-static void
-reset_packet ()
-{
-  pktp = pkt;
-}
-
-static void
-output_packet ()
-{
-  if (SERIAL_WRITE (ocd_desc, pkt, pktp - pkt))
-    perror_with_name ("output_packet: write failed");
-
-  reset_packet ();
-}
-
-/* Output a quoted character.  SYNs and DLEs are quoted.  Everything else goes
-   through untouched.  */
-
-static void
-put_quoted_char (c)
-     int c;
-{
-  switch (c)
-    {
-    case SYN:
-    case DLE:
-      *pktp++ = DLE;
-      c |= 0100;
-    }
-
-  *pktp++ = c;
-}
-
-/* Send a packet to the OCD device.  The packet framed by a SYN character,
-   a byte count and a checksum.  The byte count only counts the number of
-   bytes between the count and the checksum.  A count of zero actually
-   means 256.  Any SYNs within the packet (including the checksum and
-   count) must be quoted.  The quote character must be quoted as well.
-   Quoting is done by replacing the character with the two-character sequence
-   DLE, {char} | 0100.  Note that the quoting mechanism has no effect on the
-   byte count. */
-
-static void
-stu_put_packet (buf, len)
-     unsigned char *buf;
-     int len;
-{
-  unsigned char checksum;
-  unsigned char c;
-
-  if (len == 0 || len > 256)
-    abort ();			/* Can't represent 0 length packet */
-
-  reset_packet ();
-
-  checksum = 0;
-
-  put_quoted_char (RAW_SYN);
-
-  c = len;
-
-  do
-    {
-      checksum += c;
-
-      put_quoted_char (c);
-
-      c = *buf++;
-    }
-  while (len-- > 0);
-
-  put_quoted_char (-checksum & 0xff);
-
-  output_packet ();
-}
-
-#else
-
-/* Send a packet to the OCD device.  The packet framed by a SYN character,
-   a byte count and a checksum.  The byte count only counts the number of
-   bytes between the count and the checksum.  A count of zero actually
-   means 256.  Any SYNs within the packet (including the checksum and
-   count) must be quoted.  The quote character must be quoted as well.
-   Quoting is done by replacing the character with the two-character sequence
-   DLE, {char} | 0100.  Note that the quoting mechanism has no effect on the
-   byte count.  */
-
-static void
-ocd_put_packet (buf, len)
-     unsigned char *buf;
-     int len;
-{
-  unsigned char checksum;
-  unsigned char c;
-  unsigned char *packet, *packet_ptr;
-
-  packet = alloca (len + 1 + 1); /* packet + SYN + checksum */
-  packet_ptr = packet;
-
-  checksum = 0;
-
-  *packet_ptr++ = 0x55;
-
-  while (len-- > 0)
-    {
-      c = *buf++;
-
-      checksum += c;
-      *packet_ptr++ = c;
-    }
-
-  *packet_ptr++ = -checksum;
-  if (SERIAL_WRITE (ocd_desc, packet, packet_ptr - packet))
-    perror_with_name ("output_packet: write failed");
-}
-#endif
-
-#if 0
-/* Get a packet from the OCD device.  Timeout is only enforced for the
-   first byte of the packet.  Subsequent bytes are expected to arrive in
-   time <= remote_timeout.  Returns a pointer to a static buffer containing
-   the payload of the packet.  *LENP contains the length of the packet.
-*/
-
-static unsigned char *
-stu_get_packet (cmd, lenp, timeout)
-     unsigned char cmd;
-     int *lenp;
-{
-  int ch;
-  int len;
-  static unsigned char buf[256 + 10], *p;
-  unsigned char checksum;
-
- find_packet:
-
-  ch = get_quoted_char (timeout);
-
-  if (ch < 0)
-    error ("get_packet (readchar): %d", ch);
-
-  if (ch != RAW_SYN)
-    goto find_packet;
-
- found_syn:			/* Found the start of a packet */
-
-  p = buf;
-  checksum = 0;
-
-  len = get_quoted_char (remote_timeout);
-
-  if (len == RAW_SYN)
-    goto found_syn;
-
-  checksum += len;
-
-  if (len == 0)
-    len = 256;
-
-  len++;			/* Include checksum */
-
-  while (len-- > 0)
-    {
-      ch = get_quoted_char (remote_timeout);
-      if (ch == RAW_SYN)
-	goto found_syn;
-
-      *p++ = ch;
-      checksum += ch;
-    }
-
-  if (checksum != 0)
-    goto find_packet;
-
-  if (cmd != buf[0])
-    error ("Response phase error.  Got 0x%x, expected 0x%x", buf[0], cmd);
-
-  *lenp = p - buf - 1;
-  return buf;
-}
-
-#else
-
-/* Get a packet from the OCD device.  Timeout is only enforced for the
-   first byte of the packet.  Subsequent bytes are expected to arrive in
-   time <= remote_timeout.  Returns a pointer to a static buffer containing
-   the payload of the packet.  *LENP contains the length of the packet.
-*/
-
-static unsigned char *
-ocd_get_packet (cmd, lenp, timeout)
-     int cmd;
-     int *lenp;
-{
-  int ch;
-  int len;
-  int i;
-  static unsigned char packet[512];
-  unsigned char *packet_ptr;
-  unsigned char checksum;
-
-  ch = readchar (timeout);
-
-  if (ch < 0)
-    error ("ocd_get_packet (readchar): %d", ch);
-
-  if (ch != 0x55)
-    error ("ocd_get_packet (readchar): %d", ch);
-
-/* Found the start of a packet */
-
-  packet_ptr = packet;
-  checksum = 0;
-
-/* Read command char.  That sort of tells us how long the packet is. */
-
-  ch = readchar (timeout);
-
-  if (ch < 0)
-    error ("ocd_get_packet (readchar): %d", ch);
-
-  *packet_ptr++ = ch;
-  checksum += ch;
-
-/* Get status. */
-
-  ch = readchar (timeout);
-
-  if (ch < 0)
-    error ("ocd_get_packet (readchar): %d", ch);
-  *packet_ptr++ = ch;
-  checksum += ch;
-
-/* Get error code. */
-
-  ch = readchar (timeout);
-
-  if (ch < 0)
-    error ("ocd_get_packet (readchar): %d", ch);
-  *packet_ptr++ = ch;
-  checksum += ch;
-
-  switch (ch)			/* Figure out length of packet */
-    {
-    case 0x7:			/* Write verify error? */
-      len = 8;			/* write address, value read back */
-      break;
-    case 0x11:			/* Bus error? */
-				/* write address, read flag */
-    case 0x15:			/* Internal error */
-      len = 5;			/* error code, vector */
-      break;
-    default:			/* Error w/no params */
-      len = 0;
-      break;
-    case 0x0:			/* Normal result */
-      switch (packet[0])
-	{
-	case OCD_AYT:	/* Are You There? */
-	case OCD_SET_BAUD_RATE: /* Set Baud Rate */
-	case OCD_INIT:	/* Initialize OCD device */
-	case OCD_SET_SPEED:	/* Set Speed */
-	case OCD_SET_FUNC_CODE: /* Set Function Code */
-	case OCD_SET_CTL_FLAGS: /* Set Control Flags */
-	case OCD_SET_BUF_ADDR: /* Set Register Buffer Address */
-	case OCD_RUN:	/* Run Target from PC  */
-	case OCD_RUN_ADDR:	/* Run Target from Specified Address  */
-	case OCD_STOP:	/* Stop Target */
-	case OCD_RESET_RUN:	/* Reset Target and Run */
-	case OCD_RESET:	/* Reset Target and Halt */
-	case OCD_STEP:	/* Single Step */
-	case OCD_WRITE_REGS: /* Write Register */
-	case OCD_WRITE_MEM:	/* Write Memory */
-	case OCD_FILL_MEM:	/* Fill Memory */
-	case OCD_MOVE_MEM:	/* Move Memory */
-	case OCD_WRITE_INT_MEM: /* Write Internal Memory */
-	case OCD_JUMP:	/* Jump to Subroutine */
-	case OCD_ERASE_FLASH: /* Erase flash memory */
-	case OCD_PROGRAM_FLASH: /* Write flash memory */
-	case OCD_EXIT_MON:	/* Exit the flash programming monitor  */
-	case OCD_ENTER_MON:	/* Enter the flash programming monitor  */
-	case OCD_LOG_FILE:	/* Make Wigglers.dll save Wigglers.log */
-	case OCD_SET_CONNECTION: /* Set type of connection in Wigglers.dll */
-	  len = 0;
-	  break;
-	case OCD_GET_VERSION: /* Get Version */
-	  len = 10;
-	  break;
-	case OCD_GET_STATUS_MASK: /* Get Status Mask */
-	  len = 1;
-	  break;
-	case OCD_GET_CTRS:	/* Get Error Counters */
-	case OCD_READ_REGS:	/* Read Register */
-	case OCD_READ_MEM:	/* Read Memory */
-	case OCD_READ_INT_MEM: /* Read Internal Memory */
-	  len = 257;
-	  break;
-	default:
-	  error ("ocd_get_packet: unknown packet type 0x%x\n", ch);
-	}
-    }
-
-  if (len == 257)		/* Byte stream? */
-    {				/* Yes, byte streams contain the length */
-      ch = readchar (timeout);
-
-      if (ch < 0)
-	error ("ocd_get_packet (readchar): %d", ch);
-      *packet_ptr++ = ch;
-      checksum += ch;
-      len = ch;
-      if (len == 0)
-	len = 256;
-    }
-
-  while (len-- >= 0)		/* Do rest of packet and checksum */
-    {
-      ch = readchar (timeout);
-
-      if (ch < 0)
-	error ("ocd_get_packet (readchar): %d", ch);
-      *packet_ptr++ = ch;
-      checksum += ch;
-    }
-
-  if (checksum != 0)
-    error ("ocd_get_packet: bad packet checksum");
-
-  if (cmd != -1 && cmd != packet[0])
-    error ("Response phase error.  Got 0x%x, expected 0x%x", packet[0], cmd);
-
-  *lenp = packet_ptr - packet - 1; /* Subtract checksum byte */
-  return packet;
-}
-#endif
-
-/* Execute a simple (one-byte) command.  Returns a pointer to the data
-   following the error code.  */
-
-static unsigned char *
-ocd_do_command (cmd, statusp, lenp)
-     int cmd;
-     int *statusp;
-     int *lenp;
-{
-  unsigned char buf[100], *p;
-  int status, error_code;
-  char errbuf[100];
-
-  unsigned char logbuf[100];
-  int logpktlen;
-
-  buf[0] = cmd;
-  ocd_put_packet (buf, 1);		/* Send command */
-  p = ocd_get_packet (*buf, lenp, remote_timeout);
-
-  if (*lenp < 3)
-    error ("Truncated response packet from OCD device");
-
-  status = p[1];
-  error_code = p[2];
-
-  if (error_code != 0)
-    {
-      sprintf (errbuf, "ocd_do_command (0x%x):", cmd);
-      ocd_error (errbuf, error_code);
-    }
-
-  if (status & OCD_FLAG_PWF)
-    error ("OCD device can't detect VCC at BDM interface.");
-  else if (status & OCD_FLAG_CABLE_DISC)
-    error ("BDM cable appears to be disconnected.");
-
-  *statusp = status;
-
-  logbuf[0] = OCD_LOG_FILE;
-  logbuf[1] = 3;   /* close existing WIGGLERS.LOG */
-  ocd_put_packet (logbuf, 2);
-  ocd_get_packet (logbuf[0], &logpktlen, remote_timeout);
-
-  logbuf[0] = OCD_LOG_FILE;
-  logbuf[1] = 2;   /* append to existing WIGGLERS.LOG */
-  ocd_put_packet (logbuf, 2);
-  ocd_get_packet (logbuf[0], &logpktlen, remote_timeout);
-
-  return p + 3;
-}
-
-void
-ocd_kill ()
-{
-  /* For some mysterious reason, wait_for_inferior calls kill instead of
-     mourn after it gets TARGET_WAITKIND_SIGNALLED.  Work around it.  */
-  if (kill_kludge)
-    {
-      kill_kludge = 0;
-      target_mourn_inferior ();
-      return;
-    }
-
-  /* Don't wait for it to die.  I'm not really sure it matters whether
-     we do or not.  */
-  target_mourn_inferior ();
-}
-
-void
-ocd_mourn ()
-{
-  unpush_target (current_ops);
-  generic_mourn_inferior ();
-}
-
-/* All we actually do is set the PC to the start address of exec_bfd, and start
-   the program at that point.  */
-
-void
-ocd_create_inferior (exec_file, args, env)
-     char *exec_file;
-     char *args;
-     char **env;
-{
-  if (args && (*args != '\000'))
-    error ("Args are not supported by BDM.");
-
-  clear_proceed_status ();
-  proceed (bfd_get_start_address (exec_bfd), TARGET_SIGNAL_0, 0);
-}
-
-void
-ocd_load (args, from_tty)
-     char *args;
-     int from_tty;
-{
-  generic_load (args, from_tty);
-
-  inferior_pid = 0;
-
-/* This is necessary because many things were based on the PC at the time that
-   we attached to the monitor, which is no longer valid now that we have loaded
-   new code (and just changed the PC).  Another way to do this might be to call
-   normal_stop, except that the stack may not be valid, and things would get
-   horribly confused... */
-
-  clear_symtab_users ();
-}
-
-/* This should be defined for each target */
-/* But we want to be able to compile this file for some configurations
-   not yet supported fully */
-   
-#define BDM_BREAKPOINT {0x0,0x0,0x0,0x0} /* For ppc 8xx */
-#if 0
-#define BDM_BREAKPOINT {0x4a,0xfa} /* BGND insn used for CPU32 */
-#endif
-
-/* BDM (at least on CPU32) uses a different breakpoint */
-
-int
-ocd_insert_breakpoint (addr, contents_cache)
-     CORE_ADDR addr;
-     char *contents_cache;
-{
-  static char break_insn[] = BDM_BREAKPOINT;
-  int val;
-
-  val = target_read_memory (addr, contents_cache, sizeof (break_insn));
-
-  if (val == 0)
-    val = target_write_memory (addr, break_insn, sizeof (break_insn));
-
-  return val;
-}
-
-int
-ocd_remove_breakpoint (addr, contents_cache)
-     CORE_ADDR addr;
-     char *contents_cache;
-{
-  static char break_insn[] = BDM_BREAKPOINT;
-  int val;
-
-  val = target_write_memory (addr, contents_cache, sizeof (break_insn));
-
-  return val;
-}
-
-static void
-bdm_command (args, from_tty)
-     char *args;
-     int from_tty;
-{
-  error ("bdm command must be followed by `reset'");
-}
-
-static void
-bdm_reset_command (args, from_tty)
-     char *args;
-     int from_tty;
-{
-  int status, pktlen;
-
-  if (!ocd_desc)
-    error ("Not connected to OCD device.");
-
-  ocd_do_command (OCD_RESET, &status, &pktlen);
-  dcache_flush (ocd_dcache);
-  registers_changed ();
-}
-
-static void
-bdm_restart_command (args, from_tty)
-     char *args;
-     int from_tty;
-{
-  int status, pktlen;
-
-  if (!ocd_desc)
-    error ("Not connected to OCD device.");
-
-  ocd_do_command (OCD_RESET_RUN, &status, &pktlen);
-  last_run_status = status;
-  clear_proceed_status ();
-  wait_for_inferior ();
-  normal_stop ();
-}
-
-/* Temporary replacement for target_store_registers().  This prevents
-   generic_load from trying to set the PC.  */
-
-static void
-noop_store_registers (regno)
-     int regno;
-{
-}
-
-static void
-bdm_update_flash_command (args, from_tty)
-     char *args;
-     int from_tty;
-{
-  int status, pktlen;
-  struct cleanup *old_chain;
-  void (*store_registers_tmp) PARAMS ((int));
-
-  if (!ocd_desc)
-    error ("Not connected to OCD device.");
-
-  if (!args)
-    error ("Must specify file containing new OCD code.");
-
-/*  old_chain = make_cleanup (flash_cleanup, 0);*/
-
-  ocd_do_command (OCD_ENTER_MON, &status, &pktlen);
-
-  ocd_do_command (OCD_ERASE_FLASH, &status, &pktlen);
-
-  write_mem_command = OCD_PROGRAM_FLASH;
-  store_registers_tmp = current_target.to_store_registers;
-  current_target.to_store_registers = noop_store_registers;
-
-  generic_load (args, from_tty);
-
-  current_target.to_store_registers = store_registers_tmp;
-  write_mem_command = OCD_WRITE_MEM;
-
-  ocd_do_command (OCD_EXIT_MON, &status, &pktlen);
-
-/*  discard_cleanups (old_chain);*/
-}
-
-static void
-bdm_read_register_command (args, from_tty)
-     char *args;
-     int from_tty;
-{
-  /* XXX repeat should go on to the next register */
-
-  if (!ocd_desc)
-    error ("Not connected to OCD device.");
-
-  if (!args)
-    error ("Must specify BDM register number.");
-
-}
-
-void
-_initialize_remote_ocd ()
-{
-  extern struct cmd_list_element *cmdlist;
-  static struct cmd_list_element *ocd_cmd_list = NULL;
-
-  add_show_from_set (add_set_cmd ("remotetimeout", no_class,
-				  var_integer, (char *)&remote_timeout,
-				  "Set timeout value for remote read.\n", &setlist),
-		     &showlist);
-
-  add_prefix_cmd ("ocd", class_obscure, bdm_command, "", &ocd_cmd_list, "ocd ",
-		  0, &cmdlist);
-
-  add_cmd ("reset", class_obscure, bdm_reset_command, "", &ocd_cmd_list);
-  add_cmd ("restart", class_obscure, bdm_restart_command, "", &ocd_cmd_list);
-  add_cmd ("update-flash", class_obscure, bdm_update_flash_command, "", &ocd_cmd_list);
-  /*  add_cmd ("read-register", class_obscure, bdm_read_register_command, "", &ocd_cmd_list);*/
-}