1 /* Remote serial interface for local (hardwired) serial ports for Macintosh.
2 Copyright 1994 Free Software Foundation, Inc.
3 Contributed by Cygnus Support. Written by Stan Shebs.
5 This file is part of GDB.
7 This program is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation; either version 2 of the License, or
10 (at your option) any later version.
12 This program is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
17 You should have received a copy of the GNU General Public License
18 along with this program; if not, write to the Free Software
19 Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
26 /* This is the regular Mac Serial.h, but copied to a different name
27 so as not to get confused with the GDB serial.h above. */
28 #include "MacSerial.h"
30 /* This is unused for now. We just return a placeholder. */
37 static int mac_open PARAMS ((serial_t scb, const char *name));
38 static void mac_raw PARAMS ((serial_t scb));
39 static int mac_readchar PARAMS ((serial_t scb, int timeout));
40 static int mac_setbaudrate PARAMS ((serial_t scb, int rate));
41 static int mac_write PARAMS ((serial_t scb, const char *str, int len));
42 static void mac_close PARAMS ((serial_t scb));
43 static serial_ttystate mac_get_tty_state PARAMS ((serial_t scb));
44 static int mac_set_tty_state PARAMS ((serial_t scb, serial_ttystate state));
45 static char *aptr PARAMS ((short p));
50 char *mac_input_buffer;
51 char *mac_output_buffer;
60 /* Alloc buffer space first - that way any allocation failures are
61 intercepted before the serial driver gets involved. */
62 if (mac_input_buffer == NULL)
63 mac_input_buffer = (char *) xmalloc (4096);
64 /* Match on a name and open a port. */
65 if (strcmp (name, "modem") == 0)
67 err = OpenDriver ("\p.AIn", &input_refnum);
72 err = OpenDriver ("\p.AOut", &output_refnum);
75 CloseDriver (input_refnum);
79 else if (strcmp (name, "printer") == 0)
81 err = OpenDriver ("\p.BIn", &input_refnum);
86 err = OpenDriver ("\p.BOut", &output_refnum);
89 CloseDriver (input_refnum);
98 error ("You must specify a valid serial port name; your choices are `modem' or `printer'.");
102 /* We got something open. */
103 if (1 /* using custom buffer */)
104 SerSetBuf (input_refnum, mac_input_buffer, 4096);
105 /* Set to a GDB-preferred state. */
106 SerReset (input_refnum, stop10|noParity|data8|baud9600);
107 SerReset (output_refnum, stop10|noParity|data8|baud9600);
110 struct SerShk *handshake;
112 cb.ioCRefNum = output_refnum;
114 handshake = (struct SerShk *) &cb.csParam[0];
123 err = PBControl ((ParmBlkPtr) &cb, 0);
143 /* Always effectively in raw mode. */
146 /* Read a character with user-specified timeout. TIMEOUT is number of seconds
147 to wait, or -1 to wait forever. Use timeout of 0 to effect a poll. Returns
148 char if successful. Returns -2 if timeout expired, EOF if line dropped
149 dead, or -3 for any other error (see errno in that case). */
152 mac_readchar (scb, timeout)
157 /* time_t */ unsigned long start_time, now;
162 if (scb->bufcnt-- > 0)
169 cb.ioCRefNum = input_refnum;
171 err = PBStatus ((ParmBlkPtr) &cb, 0);
174 n = *((long *) &cb.csParam[0]);
177 pb.ioRefNum = input_refnum;
178 pb.ioBuffer = (Ptr) (scb->buf);
179 pb.ioReqCount = (n > 64 ? 64 : n);
180 err = PBRead ((ParmBlkPtr) &pb, 0);
183 scb->bufcnt = pb.ioReqCount;
185 scb->bufp = scb->buf;
188 else if (timeout == 0)
189 return SERIAL_TIMEOUT;
190 else if (timeout == -1)
195 if (now > start_time + timeout)
196 return SERIAL_TIMEOUT;
202 /* mac_{get set}_tty_state() are both dummys to fill out the function
203 vector. Someday, they may do something real... */
205 static serial_ttystate
206 mac_get_tty_state (scb)
209 struct mac_ttystate *state;
211 state = (struct mac_ttystate *) xmalloc (sizeof *state);
213 return (serial_ttystate) state;
217 mac_set_tty_state (scb, ttystate)
219 serial_ttystate ttystate;
225 mac_noflush_set_tty_state (scb, new_ttystate, old_ttystate)
227 serial_ttystate new_ttystate;
228 serial_ttystate old_ttystate;
234 mac_print_tty_state (scb, ttystate)
236 serial_ttystate ttystate;
238 /* Nothing to print. */
242 /* If there is a tricky formula to relate real baud rates
243 to what the serial driver wants, we should use it. Until
244 we get one, this table will have to do. */
249 } mac_baud_rate_table[] = {
250 { 57600, baud57600 },
252 { 19200, baud19200 },
266 mac_set_baud_rate (scb, rate)
272 for (i = 0; mac_baud_rate_table[i].real_rate != 0; ++i)
274 if (mac_baud_rate_table[i].real_rate == rate)
276 bits = mac_baud_rate_table[i].bits;
280 SerReset (input_refnum, stop10|noParity|data8|bits);
281 SerReset (output_refnum, stop10|noParity|data8|bits);
285 mac_set_stop_bits (scb, num)
292 int first_mac_write = 0;
295 mac_write (scb, str, len)
303 if (first_mac_write++ < 4)
307 pb.ioRefNum = output_refnum;
308 pb.ioBuffer = (Ptr) str;
310 err = PBWrite ((ParmBlkPtr) &pb, 0);
319 mac_close (serial_t scb)
323 if (1 /* custom buffer */)
324 SerSetBuf (input_refnum, mac_input_buffer, 0);
325 CloseDriver (input_refnum);
330 if (0 /* custom buffer */)
331 SerSetBuf (input_refnum, mac_output_buffer, 0);
332 CloseDriver (output_refnum);
337 static struct serial_ops mac_ops =
345 mac_noop, /* flush output */
346 mac_noop, /* flush input */
347 mac_noop, /* send break -- currently only for nindy */
352 mac_noflush_set_tty_state,
355 mac_noop, /* wait for output to drain */
359 _initialize_ser_mac ()
361 serial_add_interface (&mac_ops);