Initial creation of sourceware repositorygdb-4_18-branchpoint

1 files changed, 209 insertions, 0 deletions

diff --git a/gdb/ser-ocd.c b/gdb/ser-ocd.c
new file mode 100644
index 0000000..971f84e
--- /dev/null
+++ b/gdb/ser-ocd.c
@@ -0,0 +1,209 @@
+/* Remote serial interface for Macraigor Systems implementation of
+	On-Chip Debugging using serial target box or serial wiggler
+
+   Copyright 1994, 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 "serial.h"
+
+#ifdef _WIN32
+#include <windows.h>
+#endif
+
+static int ser_ocd_open PARAMS ((serial_t scb, const char *name));
+static void ser_ocd_raw PARAMS ((serial_t scb));
+static int ser_ocd_readchar PARAMS ((serial_t scb, int timeout));
+static int ser_ocd_setbaudrate PARAMS ((serial_t scb, int rate));
+static int ser_ocd_write PARAMS ((serial_t scb, const char *str, int len));
+static void ser_ocd_close PARAMS ((serial_t scb));
+static serial_ttystate ser_ocd_get_tty_state PARAMS ((serial_t scb));
+static int ser_ocd_set_tty_state PARAMS ((serial_t scb, serial_ttystate state));
+
+#ifdef _WIN32
+/* On Windows, this function pointer is initialized to a function in
+   the wiggler DLL.  */
+static int (*dll_do_command) PARAMS ((const char *, char *));
+#endif
+
+static int
+ocd_open (scb, name)
+     serial_t scb;
+     const char *name;
+{
+#ifdef _WIN32
+  /* Find the wiggler DLL which talks to the board.  */
+  if (dll_do_command == NULL)
+    {
+      HINSTANCE handle;
+
+      /* FIXME: Should the user be able to configure this?  */
+      handle = LoadLibrary ("Wigglers.dll");
+      if (handle == NULL)
+	error ("Can't load Wigglers.dll");
+
+      dll_do_command = ((int (*) PARAMS ((const char *, char *)))
+			GetProcAddress (handle, "do_command"));
+      if (dll_do_command == NULL)
+	error ("Can't find do_command function in Wigglers.dll");
+    }
+#else
+  /* No wiggler DLLs on Unix yet, fail.  */
+  error ("Wiggler library not available for this type of host.");
+#endif /* _WIN32 */
+  return 0;
+}
+
+static int
+ocd_noop (scb)
+     serial_t scb;
+{
+  return 0;
+}
+
+static void
+ocd_raw (scb)
+     serial_t scb;
+{
+  /* Always in raw mode */
+}
+
+static void
+ocd_readremote ()
+{
+}
+
+/* We need a buffer to store responses from the Wigglers.dll */
+#define WIGGLER_BUFF_SIZE 512
+unsigned char from_wiggler_buffer[WIGGLER_BUFF_SIZE];
+unsigned char * wiggler_buffer_ptr;	/* curr spot in buffer */
+
+static int
+ocd_readchar (scb, timeout)
+     serial_t scb;
+     int timeout;
+{
+  /* Catch attempts at reading past the end of the buffer */
+  if (wiggler_buffer_ptr >
+              (from_wiggler_buffer + (sizeof (char *) * WIGGLER_BUFF_SIZE)))
+    error ("ocd_readchar asked to read past the end of the buffer!");
+
+  return (int) *wiggler_buffer_ptr++; /* return curr char and increment ptr */
+}
+
+struct ocd_ttystate {
+  int dummy;
+};
+
+/* ocd_{get set}_tty_state() are both dummys to fill out the function
+   vector.  Someday, they may do something real... */
+
+static serial_ttystate
+ocd_get_tty_state (scb)
+     serial_t scb;
+{
+  struct ocd_ttystate *state;
+
+  state = (struct ocd_ttystate *) xmalloc (sizeof *state);
+
+  return (serial_ttystate) state;
+}
+
+static int
+ocd_set_tty_state (scb, ttystate)
+     serial_t scb;
+     serial_ttystate ttystate;
+{
+  return 0;
+}
+
+static int
+ocd_noflush_set_tty_state (scb, new_ttystate, old_ttystate)
+     serial_t scb;
+     serial_ttystate new_ttystate;
+     serial_ttystate old_ttystate;
+{
+  return 0;
+}
+
+static void
+ocd_print_tty_state (scb, ttystate)
+     serial_t scb;
+     serial_ttystate ttystate;
+{
+  /* Nothing to print.  */
+  return;
+}
+
+static int
+ocd_setbaudrate (scb, rate)
+     serial_t scb;
+     int rate;
+{
+  return 0;
+}
+
+static int
+ocd_write (scb, str, len)
+     serial_t scb;
+     const char *str;
+     int len;
+{
+  char c;
+
+#ifdef _WIN32 
+  /* send packet to Wigglers.dll and store response so we can give it to
+	remote-wiggler.c when get_packet is run */
+  dll_do_command (str, from_wiggler_buffer);
+  wiggler_buffer_ptr = from_wiggler_buffer;
+#endif
+
+  return 0;
+}
+
+static void
+ocd_close (scb)
+     serial_t scb;
+{
+}
+
+static struct serial_ops ocd_ops =
+{
+  "ocd",
+  0,
+  ocd_open,
+  ocd_close,
+  ocd_readchar,
+  ocd_write,
+  ocd_noop,		/* flush output */
+  ocd_noop,		/* flush input */
+  ocd_noop,		/* send break -- currently used only for nindy */
+  ocd_raw,
+  ocd_get_tty_state,
+  ocd_set_tty_state,
+  ocd_print_tty_state,
+  ocd_noflush_set_tty_state,
+  ocd_setbaudrate,
+  ocd_noop,		/* wait for output to drain */
+};
+
+void
+_initialize_ser_ocd_bdm ()
+{
+  serial_add_interface (&ocd_ops);
+}