| /* Remote serial interface for local (hardwired) serial ports for Macintosh. |
| Copyright 1994 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 gdb_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); |
| } |