summaryrefslogtreecommitdiff
path: root/gdb/ser-mac.c
blob: fe154ab330113de3fd997d60ae2ab6ecbe598a0b (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
/* Remote serial interface for local (hardwired) serial ports for Macintosh.
   Copyright 1994, 2000 Free Software Foundation, Inc.
   Contributed by Cygnus Support.  Written by Stan Shebs.

   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"

#include <Types.h>
#include <Devices.h>
/* This is the regular Mac Serial.h, but copied to a different name
   so as not to get confused with the GDB serial.h above.  */
#include "MacSerial.h"

/* This is unused for now.  We just return a placeholder. */

struct mac_ttystate
  {
    int bogus;
  };

static int mac_open PARAMS ((serial_t scb, const char *name));
static void mac_raw PARAMS ((serial_t scb));
static int mac_readchar PARAMS ((serial_t scb, int timeout));
static int mac_setbaudrate PARAMS ((serial_t scb, int rate));
static int mac_write PARAMS ((serial_t scb, const char *str, int len));
static void mac_close PARAMS ((serial_t scb));
static serial_ttystate mac_get_tty_state PARAMS ((serial_t scb));
static int mac_set_tty_state PARAMS ((serial_t scb, serial_ttystate state));
static char *aptr PARAMS ((short p));

short input_refnum;
short output_refnum;

char *mac_input_buffer;
char *mac_output_buffer;

static int
mac_open (scb, name)
     serial_t scb;
     const char *name;
{
  OSErr err;

  /* Alloc buffer space first - that way any allocation failures are
     intercepted before the serial driver gets involved. */
  if (mac_input_buffer == NULL)
    mac_input_buffer = (char *) xmalloc (4096);
  /* Match on a name and open a port. */
  if (strcmp (name, "modem") == 0)
    {
      err = OpenDriver ("\p.AIn", &input_refnum);
      if (err != 0)
	{
	  return (-1);
	}
      err = OpenDriver ("\p.AOut", &output_refnum);
      if (err != 0)
	{
	  CloseDriver (input_refnum);
	  return (-1);
	}
    }
  else if (strcmp (name, "printer") == 0)
    {
      err = OpenDriver ("\p.BIn", &input_refnum);
      if (err != 0)
	{
	  return (-1);
	}
      err = OpenDriver ("\p.BOut", &output_refnum);
      if (err != 0)
	{
	  CloseDriver (input_refnum);
	  return (-1);
	}
      /* fake */
      scb->fd = 1;
      return 0;
    }
  else
    {
      error ("You must specify a valid serial port name; your choices are `modem' or `printer'.");
      errno = ENOENT;
      return (-1);
    }
  /* We got something open. */
  if (1 /* using custom buffer */ )
    SerSetBuf (input_refnum, mac_input_buffer, 4096);
  /* Set to a GDB-preferred state. */
  SerReset (input_refnum, stop10 | noParity | data8 | baud9600);
  SerReset (output_refnum, stop10 | noParity | data8 | baud9600);
  {
    CntrlParam cb;
    struct SerShk *handshake;

    cb.ioCRefNum = output_refnum;
    cb.csCode = 14;
    handshake = (struct SerShk *) &cb.csParam[0];
    handshake->fXOn = 0;
    handshake->fCTS = 0;
    handshake->xOn = 0;
    handshake->xOff = 0;
    handshake->errs = 0;
    handshake->evts = 0;
    handshake->fInX = 0;
    handshake->fDTR = 0;
    err = PBControl ((ParmBlkPtr) & cb, 0);
    if (err < 0)
      return (-1);
  }
  /* fake */
  scb->fd = 1;
  return 0;
}

static int
mac_noop (scb)
     serial_t scb;
{
  return 0;
}

static void
mac_raw (scb)
     serial_t scb;
{
  /* Always effectively in raw mode. */
}

/* Read a character with user-specified timeout.  TIMEOUT is number of seconds
   to wait, or -1 to wait forever.  Use timeout of 0 to effect a poll.  Returns
   char if successful.  Returns -2 if timeout expired, EOF if line dropped
   dead, or -3 for any other error (see errno in that case). */

static int
mac_readchar (scb, timeout)
     serial_t scb;
     int timeout;
{
  int status, n;
  /* time_t */ unsigned long start_time, now;
  OSErr err;
  CntrlParam cb;
  IOParam pb;

  if (scb->bufcnt-- > 0)
    return *scb->bufp++;

  time (&start_time);

  while (1)
    {
      cb.ioCRefNum = input_refnum;
      cb.csCode = 2;
      err = PBStatus ((ParmBlkPtr) & cb, 0);
      if (err < 0)
	return SERIAL_ERROR;
      n = *((long *) &cb.csParam[0]);
      if (n > 0)
	{
	  pb.ioRefNum = input_refnum;
	  pb.ioBuffer = (Ptr) (scb->buf);
	  pb.ioReqCount = (n > 64 ? 64 : n);
	  err = PBRead ((ParmBlkPtr) & pb, 0);
	  if (err < 0)
	    return SERIAL_ERROR;
	  scb->bufcnt = pb.ioReqCount;
	  scb->bufcnt--;
	  scb->bufp = scb->buf;
	  return *scb->bufp++;
	}
      else if (timeout == 0)
	return SERIAL_TIMEOUT;
      else if (timeout == -1)
	;
      else
	{
	  time (&now);
	  if (now > start_time + timeout)
	    return SERIAL_TIMEOUT;
	}
      PROGRESS (1);
    }
}

/* mac_{get set}_tty_state() are both dummys to fill out the function
   vector.  Someday, they may do something real... */

static serial_ttystate
mac_get_tty_state (scb)
     serial_t scb;
{
  struct mac_ttystate *state;

  state = (struct mac_ttystate *) xmalloc (sizeof *state);

  return (serial_ttystate) state;
}

static int
mac_set_tty_state (scb, ttystate)
     serial_t scb;
     serial_ttystate ttystate;
{
  return 0;
}

static int
mac_noflush_set_tty_state (scb, new_ttystate, old_ttystate)
     serial_t scb;
     serial_ttystate new_ttystate;
     serial_ttystate old_ttystate;
{
  return 0;
}

static void
mac_print_tty_state (serial_t scb,
		     serial_ttystate ttystate,
		     struct ui_file *stream)
{
  /* Nothing to print.  */
  return;
}

/* If there is a tricky formula to relate real baud rates
   to what the serial driver wants, we should use it.  Until
   we get one, this table will have to do.  */

static struct
{
  int real_rate;
  int bits;
}
mac_baud_rate_table[] =
{
  {
    57600, baud57600
  }
  ,
  {
    38400, 1
  }
  ,
  {
    19200, baud19200
  }
  ,
  {
    9600, baud9600
  }
  ,
  {
    7200, baud7200
  }
  ,
  {
    4800, baud4800
  }
  ,
  {
    3600, baud3600
  }
  ,
  {
    2400, baud2400
  }
  ,
  {
    1800, baud1800
  }
  ,
  {
    1200, baud1200
  }
  ,
  {
    600, baud600
  }
  ,
  {
    300, baud300
  }
  ,
  {
    0, 0
  }
};

static int
mac_set_baud_rate (scb, rate)
     serial_t scb;
     int rate;
{
  int i, bits;

  for (i = 0; mac_baud_rate_table[i].real_rate != 0; ++i)
    {
      if (mac_baud_rate_table[i].real_rate == rate)
	{
	  bits = mac_baud_rate_table[i].bits;
	  break;
	}
    }
  SerReset (input_refnum, stop10 | noParity | data8 | bits);
  SerReset (output_refnum, stop10 | noParity | data8 | bits);
}

static int
mac_set_stop_bits (scb, num)
     serial_t scb;
     int num;
{
  return 0;
}

int first_mac_write = 0;

static int
mac_write (scb, str, len)
     serial_t scb;
     const char *str;
     int len;
{
  OSErr err;
  IOParam pb;

  if (first_mac_write++ < 4)
    {
      sleep (1);
    }
  pb.ioRefNum = output_refnum;
  pb.ioBuffer = (Ptr) str;
  pb.ioReqCount = len;
  err = PBWrite ((ParmBlkPtr) & pb, 0);
  if (err < 0)
    {
      return 1;
    }
  return 0;
}

static void
mac_close (serial_t scb)
{
  if (input_refnum)
    {
      if (1 /* custom buffer */ )
	SerSetBuf (input_refnum, mac_input_buffer, 0);
      CloseDriver (input_refnum);
      input_refnum = 0;
    }
  if (output_refnum)
    {
      if (0 /* custom buffer */ )
	SerSetBuf (input_refnum, mac_output_buffer, 0);
      CloseDriver (output_refnum);
      output_refnum = 0;
    }
}

static struct serial_ops mac_ops =
{
  "hardwire",
  0,
  mac_open,
  mac_close,
  mac_readchar,
  mac_write,
  mac_noop,			/* flush output */
  mac_noop,			/* flush input */
  mac_noop,			/* send break -- currently only for nindy */
  mac_raw,
  mac_get_tty_state,
  mac_set_tty_state,
  mac_print_tty_state,
  mac_noflush_set_tty_state,
  mac_set_baud_rate,
  mac_set_stop_bits,
  mac_noop,			/* wait for output to drain */
};

void
_initialize_ser_mac ()
{
  serial_add_interface (&mac_ops);
}