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Diffstat (limited to 'gdb/ser-ocd.c')
| -rw-r--r-- | gdb/ser-ocd.c | 209 |
1 files changed, 209 insertions, 0 deletions
diff --git a/gdb/ser-ocd.c b/gdb/ser-ocd.c new file mode 100644 index 00000000000..971f84e049c --- /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); +} |