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/* 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");
}
#endif
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);
}
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