1 /* Remote serial support interface definitions for GDB, the GNU Debugger.
2 Copyright 1992, 1993 Free Software Foundation, Inc.
4 This file is part of GDB.
6 This program is free software; you can redistribute it and/or modify
7 it under the terms of the GNU General Public License as published by
8 the Free Software Foundation; either version 2 of the License, or
9 (at your option) any later version.
11 This program is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 GNU General Public License for more details.
16 You should have received a copy of the GNU General Public License
17 along with this program; if not, write to the Free Software
18 Foundation, Inc., 59 Temple Place - Suite 330,
19 Boston, MA 02111-1307, USA. */
24 /* Terminal state pointer. This is specific to each type of interface. */
26 typedef PTR serial_ttystate;
30 int fd; /* File descriptor */
31 struct serial_ops *ops; /* Function vector */
32 void *state; /* Local context info for open FD */
33 serial_ttystate ttystate; /* Not used (yet) */
34 int bufcnt; /* Amount of data in receive buffer */
35 unsigned char *bufp; /* Current byte */
36 unsigned char buf[BUFSIZ]; /* Da buffer itself */
37 int current_timeout; /* (termio{s} only), last value of VTIME */
38 /* ser-unix.c termio{,s} only, we still need to wait for this many more
40 int timeout_remaining;
41 char *name; /* The name of the device or host */
42 struct _serial_t *next; /* Pointer to the next serial_t */
43 int refcnt; /* Number of pointers to this block */
46 typedef struct _serial_t *serial_t;
51 struct serial_ops *next;
52 int (*open) PARAMS ((serial_t, const char *name));
53 void (*close) PARAMS ((serial_t));
54 int (*readchar) PARAMS ((serial_t, int timeout));
55 int (*write) PARAMS ((serial_t, const char *str, int len));
56 /* Discard pending output */
57 int (*flush_output) PARAMS ((serial_t));
58 /* Discard pending input */
59 int (*flush_input) PARAMS ((serial_t));
60 int (*send_break) PARAMS ((serial_t));
61 void (*go_raw) PARAMS ((serial_t));
62 serial_ttystate (*get_tty_state) PARAMS ((serial_t));
63 int (*set_tty_state) PARAMS ((serial_t, serial_ttystate));
64 void (*print_tty_state) PARAMS ((serial_t, serial_ttystate));
65 int (*noflush_set_tty_state)
66 PARAMS ((serial_t, serial_ttystate, serial_ttystate));
67 int (*setbaudrate) PARAMS ((serial_t, int rate));
68 int (*setstopbits) PARAMS ((serial_t, int num));
69 /* Wait for output to drain */
70 int (*drain_output) PARAMS ((serial_t));
73 /* Add a new serial interface to the interface list */
75 void serial_add_interface PARAMS ((struct serial_ops * optable));
77 serial_t serial_open PARAMS ((const char *name));
79 serial_t serial_fdopen PARAMS ((const int fd));
81 /* For most routines, if a failure is indicated, then errno should be
84 /* Try to open NAME. Returns a new serial_t on success, NULL on failure.
87 #define SERIAL_OPEN(NAME) serial_open(NAME)
89 /* Open a new serial stream using a file handle. */
91 #define SERIAL_FDOPEN(FD) serial_fdopen(FD)
93 /* Allow pending output to drain. */
95 #define SERIAL_DRAIN_OUTPUT(SERIAL_T) \
96 ((SERIAL_T)->ops->drain_output((SERIAL_T)))
98 /* Flush (discard) pending output. Might also flush input (if this system can't flush
101 #define SERIAL_FLUSH_OUTPUT(SERIAL_T) \
102 ((SERIAL_T)->ops->flush_output((SERIAL_T)))
104 /* Flush pending input. Might also flush output (if this system can't flush
107 #define SERIAL_FLUSH_INPUT(SERIAL_T)\
108 ((*(SERIAL_T)->ops->flush_input) ((SERIAL_T)))
110 /* Send a break between 0.25 and 0.5 seconds long. */
112 extern int serial_send_break PARAMS ((serial_t scb));
114 #define SERIAL_SEND_BREAK(SERIAL_T) serial_send_break (SERIAL_T)
116 /* Turn the port into raw mode. */
118 #define SERIAL_RAW(SERIAL_T) (SERIAL_T)->ops->go_raw((SERIAL_T))
120 /* Return a pointer to a newly malloc'd ttystate containing the state
122 #define SERIAL_GET_TTY_STATE(SERIAL_T) (SERIAL_T)->ops->get_tty_state((SERIAL_T))
124 /* Set the state of the tty to TTYSTATE. The change is immediate.
125 When changing to or from raw mode, input might be discarded.
126 Returns 0 for success, negative value for error (in which case errno
127 contains the error). */
128 #define SERIAL_SET_TTY_STATE(SERIAL_T, TTYSTATE) (SERIAL_T)->ops->set_tty_state((SERIAL_T), (TTYSTATE))
130 /* printf_filtered a user-comprehensible description of ttystate. */
131 #define SERIAL_PRINT_TTY_STATE(SERIAL_T, TTYSTATE) \
132 ((*((SERIAL_T)->ops->print_tty_state)) ((SERIAL_T), (TTYSTATE)))
134 /* Set the tty state to NEW_TTYSTATE, where OLD_TTYSTATE is the
135 current state (generally obtained from a recent call to
136 SERIAL_GET_TTY_STATE), but be careful not to discard any input.
137 This means that we never switch in or out of raw mode, even
138 if NEW_TTYSTATE specifies a switch. */
139 #define SERIAL_NOFLUSH_SET_TTY_STATE(SERIAL_T, NEW_TTYSTATE, OLD_TTYSTATE) \
140 ((*((SERIAL_T)->ops->noflush_set_tty_state)) \
141 ((SERIAL_T), (NEW_TTYSTATE), (OLD_TTYSTATE)))
143 /* Read one char from the serial device with TIMEOUT seconds to wait
144 or -1 to wait forever. Use timeout of 0 to effect a poll. Returns
145 char if ok, else one of the following codes. Note that all error
146 codes are guaranteed to be < 0. */
148 #define SERIAL_ERROR -1 /* General error, see errno for details */
149 #define SERIAL_TIMEOUT -2
150 #define SERIAL_EOF -3
152 extern int serial_readchar PARAMS ((serial_t scb, int timeout));
154 #define SERIAL_READCHAR(SERIAL_T, TIMEOUT) serial_readchar (SERIAL_T, TIMEOUT)
156 /* Set the baudrate to the decimal value supplied. Returns 0 for success,
159 #define SERIAL_SETBAUDRATE(SERIAL_T, RATE) ((SERIAL_T)->ops->setbaudrate((SERIAL_T), RATE))
161 /* Set the number of stop bits to the value specified. Returns 0 for success,
164 #define SERIAL_1_STOPBITS 1
165 #define SERIAL_1_AND_A_HALF_STOPBITS 2 /* 1.5 bits, snicker... */
166 #define SERIAL_2_STOPBITS 3
168 #define SERIAL_SETSTOPBITS(SERIAL_T, NUM) ((SERIAL_T)->ops->setstopbits((SERIAL_T), NUM))
170 /* Write LEN chars from STRING to the port SERIAL_T. Returns 0 for
171 success, non-zero for failure. */
173 extern int serial_write PARAMS ((serial_t scb, const char *str, int len));
175 #define SERIAL_WRITE(SERIAL_T, STRING,LEN) serial_write (SERIAL_T, STRING, LEN)
177 /* Push out all buffers, close the device and destroy SERIAL_T. */
179 extern void serial_close PARAMS ((serial_t, int));
181 #define SERIAL_CLOSE(SERIAL_T) serial_close(SERIAL_T, 1)
183 /* Push out all buffers and destroy SERIAL_T without closing the device. */
185 #define SERIAL_UN_FDOPEN(SERIAL_T) serial_close(SERIAL_T, 0)
187 extern void serial_printf
188 PARAMS ((serial_t desc, const char *,...))
189 ATTR_FORMAT (printf, 2, 3);
191 /* File in which to record the remote debugging session */
193 extern void serial_log_command PARAMS ((const char *));
195 #endif /* SERIAL_H */