| 1 | /* Remote serial interface for Macraigor Systems implementation of |
| 2 | On-Chip Debugging using serial target box or serial wiggler |
| 3 | |
| 4 | Copyright 1994, 1997 Free Software Foundation, Inc. |
| 5 | |
| 6 | This file is part of GDB. |
| 7 | |
| 8 | This program is free software; you can redistribute it and/or modify |
| 9 | it under the terms of the GNU General Public License as published by |
| 10 | the Free Software Foundation; either version 2 of the License, or |
| 11 | (at your option) any later version. |
| 12 | |
| 13 | This program is distributed in the hope that it will be useful, |
| 14 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 15 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 16 | GNU General Public License for more details. |
| 17 | |
| 18 | You should have received a copy of the GNU General Public License |
| 19 | along with this program; if not, write to the Free Software |
| 20 | Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ |
| 21 | |
| 22 | #include "defs.h" |
| 23 | #include "serial.h" |
| 24 | |
| 25 | #ifdef _WIN32 |
| 26 | #include <windows.h> |
| 27 | #endif |
| 28 | |
| 29 | static int ser_ocd_open PARAMS ((serial_t scb, const char *name)); |
| 30 | static void ser_ocd_raw PARAMS ((serial_t scb)); |
| 31 | static int ser_ocd_readchar PARAMS ((serial_t scb, int timeout)); |
| 32 | static int ser_ocd_setbaudrate PARAMS ((serial_t scb, int rate)); |
| 33 | static int ser_ocd_write PARAMS ((serial_t scb, const char *str, int len)); |
| 34 | static void ser_ocd_close PARAMS ((serial_t scb)); |
| 35 | static serial_ttystate ser_ocd_get_tty_state PARAMS ((serial_t scb)); |
| 36 | static int ser_ocd_set_tty_state PARAMS ((serial_t scb, serial_ttystate state)); |
| 37 | |
| 38 | #ifdef _WIN32 |
| 39 | /* On Windows, this function pointer is initialized to a function in |
| 40 | the wiggler DLL. */ |
| 41 | static int (*dll_do_command) PARAMS ((const char *, char *)); |
| 42 | #endif |
| 43 | |
| 44 | static int |
| 45 | ocd_open (scb, name) |
| 46 | serial_t scb; |
| 47 | const char *name; |
| 48 | { |
| 49 | #ifdef _WIN32 |
| 50 | /* Find the wiggler DLL which talks to the board. */ |
| 51 | if (dll_do_command == NULL) |
| 52 | { |
| 53 | HINSTANCE handle; |
| 54 | |
| 55 | /* FIXME: Should the user be able to configure this? */ |
| 56 | handle = LoadLibrary ("Wigglers.dll"); |
| 57 | if (handle == NULL) |
| 58 | error ("Can't load Wigglers.dll"); |
| 59 | |
| 60 | dll_do_command = ((int (*) PARAMS ((const char *, char *))) |
| 61 | GetProcAddress (handle, "do_command")); |
| 62 | if (dll_do_command == NULL) |
| 63 | error ("Can't find do_command function in Wigglers.dll"); |
| 64 | } |
| 65 | #endif |
| 66 | |
| 67 | return 0; |
| 68 | } |
| 69 | |
| 70 | static int |
| 71 | ocd_noop (scb) |
| 72 | serial_t scb; |
| 73 | { |
| 74 | return 0; |
| 75 | } |
| 76 | |
| 77 | static void |
| 78 | ocd_raw (scb) |
| 79 | serial_t scb; |
| 80 | { |
| 81 | /* Always in raw mode */ |
| 82 | } |
| 83 | |
| 84 | static void |
| 85 | ocd_readremote () |
| 86 | { |
| 87 | } |
| 88 | |
| 89 | /* We need a buffer to store responses from the Wigglers.dll */ |
| 90 | #define WIGGLER_BUFF_SIZE 512 |
| 91 | unsigned char from_wiggler_buffer[WIGGLER_BUFF_SIZE]; |
| 92 | unsigned char * wiggler_buffer_ptr; /* curr spot in buffer */ |
| 93 | |
| 94 | static int |
| 95 | ocd_readchar (scb, timeout) |
| 96 | serial_t scb; |
| 97 | int timeout; |
| 98 | { |
| 99 | /* Catch attempts at reading past the end of the buffer */ |
| 100 | if (wiggler_buffer_ptr > |
| 101 | (from_wiggler_buffer + (sizeof (char *) * WIGGLER_BUFF_SIZE))) |
| 102 | error ("ocd_readchar asked to read past the end of the buffer!"); |
| 103 | |
| 104 | return (int) *wiggler_buffer_ptr++; /* return curr char and increment ptr */ |
| 105 | } |
| 106 | |
| 107 | struct ocd_ttystate { |
| 108 | int dummy; |
| 109 | }; |
| 110 | |
| 111 | /* ocd_{get set}_tty_state() are both dummys to fill out the function |
| 112 | vector. Someday, they may do something real... */ |
| 113 | |
| 114 | static serial_ttystate |
| 115 | ocd_get_tty_state (scb) |
| 116 | serial_t scb; |
| 117 | { |
| 118 | struct ocd_ttystate *state; |
| 119 | |
| 120 | state = (struct ocd_ttystate *) xmalloc (sizeof *state); |
| 121 | |
| 122 | return (serial_ttystate) state; |
| 123 | } |
| 124 | |
| 125 | static int |
| 126 | ocd_set_tty_state (scb, ttystate) |
| 127 | serial_t scb; |
| 128 | serial_ttystate ttystate; |
| 129 | { |
| 130 | return 0; |
| 131 | } |
| 132 | |
| 133 | static int |
| 134 | ocd_noflush_set_tty_state (scb, new_ttystate, old_ttystate) |
| 135 | serial_t scb; |
| 136 | serial_ttystate new_ttystate; |
| 137 | serial_ttystate old_ttystate; |
| 138 | { |
| 139 | return 0; |
| 140 | } |
| 141 | |
| 142 | static void |
| 143 | ocd_print_tty_state (scb, ttystate) |
| 144 | serial_t scb; |
| 145 | serial_ttystate ttystate; |
| 146 | { |
| 147 | /* Nothing to print. */ |
| 148 | return; |
| 149 | } |
| 150 | |
| 151 | static int |
| 152 | ocd_setbaudrate (scb, rate) |
| 153 | serial_t scb; |
| 154 | int rate; |
| 155 | { |
| 156 | return 0; |
| 157 | } |
| 158 | |
| 159 | static int |
| 160 | ocd_write (scb, str, len) |
| 161 | serial_t scb; |
| 162 | const char *str; |
| 163 | int len; |
| 164 | { |
| 165 | char c; |
| 166 | |
| 167 | #ifdef _WIN32 |
| 168 | /* send packet to Wigglers.dll and store response so we can give it to |
| 169 | remote-wiggler.c when get_packet is run */ |
| 170 | dll_do_command (str, from_wiggler_buffer); |
| 171 | wiggler_buffer_ptr = from_wiggler_buffer; |
| 172 | #endif |
| 173 | |
| 174 | return 0; |
| 175 | } |
| 176 | |
| 177 | static void |
| 178 | ocd_close (scb) |
| 179 | serial_t scb; |
| 180 | { |
| 181 | } |
| 182 | |
| 183 | static struct serial_ops ocd_ops = |
| 184 | { |
| 185 | "ocd", |
| 186 | 0, |
| 187 | ocd_open, |
| 188 | ocd_close, |
| 189 | ocd_readchar, |
| 190 | ocd_write, |
| 191 | ocd_noop, /* flush output */ |
| 192 | ocd_noop, /* flush input */ |
| 193 | ocd_noop, /* send break -- currently used only for nindy */ |
| 194 | ocd_raw, |
| 195 | ocd_get_tty_state, |
| 196 | ocd_set_tty_state, |
| 197 | ocd_print_tty_state, |
| 198 | ocd_noflush_set_tty_state, |
| 199 | ocd_setbaudrate, |
| 200 | ocd_noop, /* wait for output to drain */ |
| 201 | }; |
| 202 | |
| 203 | void |
| 204 | _initialize_ser_ocd_bdm () |
| 205 | { |
| 206 | serial_add_interface (&ocd_ops); |
| 207 | } |