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[/] [or1k/] [tags/] [tn_m001/] [gdb-5.0/] [gdb/] [ser-ocd.c] - Rev 861
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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, 1999, 2000 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 ui_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); }
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