| /* Remote serial interface for Macraigor Systems implementation of |
| On-Chip Debugging using serial target box or serial wiggler |
| |
| Copyright 1994, 1997, 1999 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 |
| |
| #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 */ |
| } |
| |
| /* 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 (serial_t scb, |
| serial_ttystate ttystate, |
| struct gdb_file *stream) |
| { |
| /* 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; |
| { |
| #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); |
| } |