4887063b3c
for `watchdog' variable. This allows the user to put an upper limit on the amount of time that GDB will wait for the target to return from a step or continue operation. This will primarily be used for the testsuite, where it is difficult to come up with a reasonable timeout for things like function calls, which can take as long as three minutes under some circumstances. If the watchdog timer expires, GDB will generate an error that looks like `Watchdog has expired.', and will detach from the target. * remote-mips.c (mips_open): Setup initial frame from target. Print it out so that user is told where the program is stopped when they attach. * remote-nrom.c: Loads of cleanups. Use serial code to open network connections. Use expect() to wait for response to download command. * ser-tcp.c (tcp_open): Retry connection if we get ECONNREFUSED. * serial.c serial.h (serial_open serial_fdopen serial_close): Allow users to open the same device multiple times. They all get to share the same serial_t. This is about the only way to have multiple active targets use the same device (for download and debug). * sparcl-tdep.c: Keep #include <unistd.h> away from GO32. * target.c: Add `targetdebug' variable. If this is non-zero, then a special target is put at the top of the target stack which will cause all calls through the target vector to have their args and results printed out.
173 lines
6.2 KiB
C
173 lines
6.2 KiB
C
/* Remote serial support interface definitions for GDB, the GNU Debugger.
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Copyright 1992, 1993 Free Software Foundation, Inc.
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This file is part of GDB.
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */
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#ifndef SERIAL_H
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#define SERIAL_H
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/* Terminal state pointer. This is specific to each type of interface. */
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typedef PTR serial_ttystate;
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struct _serial_t
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{
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int fd; /* File descriptor */
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struct serial_ops *ops; /* Function vector */
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serial_ttystate ttystate; /* Not used (yet) */
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int bufcnt; /* Amount of data in receive buffer */
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unsigned char *bufp; /* Current byte */
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unsigned char buf[BUFSIZ]; /* Da buffer itself */
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int current_timeout; /* (termio{s} only), last value of VTIME */
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/* ser-unix.c termio{,s} only, we still need to wait for this many more
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seconds. */
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int timeout_remaining;
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char *name; /* The name of the device or host */
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struct _serial_t *next; /* Pointer to the next serial_t */
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int refcnt; /* Number of pointers to this block */
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};
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typedef struct _serial_t *serial_t;
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serial_t scb_base; /* Pointer to list of scb's */
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struct serial_ops {
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char *name;
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struct serial_ops *next;
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int (*open) PARAMS ((serial_t, const char *name));
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void (*close) PARAMS ((serial_t));
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int (*readchar) PARAMS ((serial_t, int timeout));
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int (*write) PARAMS ((serial_t, const char *str, int len));
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int (*flush_output) PARAMS ((serial_t));
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int (*flush_input) PARAMS ((serial_t));
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int (*send_break) PARAMS ((serial_t));
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void (*go_raw) PARAMS ((serial_t));
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serial_ttystate (*get_tty_state) PARAMS ((serial_t));
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int (*set_tty_state) PARAMS ((serial_t, serial_ttystate));
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void (*print_tty_state) PARAMS ((serial_t, serial_ttystate));
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int (*noflush_set_tty_state)
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PARAMS ((serial_t, serial_ttystate, serial_ttystate));
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int (*setbaudrate) PARAMS ((serial_t, int rate));
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int (*setstopbits) PARAMS ((serial_t, int num));
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};
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/* Add a new serial interface to the interface list */
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void serial_add_interface PARAMS ((struct serial_ops *optable));
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serial_t serial_open PARAMS ((const char *name));
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serial_t serial_fdopen PARAMS ((const int fd));
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/* For most routines, if a failure is indicated, then errno should be
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examined. */
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/* Try to open NAME. Returns a new serial_t on success, NULL on failure.
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*/
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#define SERIAL_OPEN(NAME) serial_open(NAME)
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/* Open a new serial stream using a file handle. */
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#define SERIAL_FDOPEN(FD) serial_fdopen(FD)
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/* Flush pending output. Might also flush input (if this system can't flush
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only output). */
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#define SERIAL_FLUSH_OUTPUT(SERIAL_T) \
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((SERIAL_T)->ops->flush_output((SERIAL_T)))
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/* Flush pending input. Might also flush output (if this system can't flush
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only input). */
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#define SERIAL_FLUSH_INPUT(SERIAL_T)\
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((*(SERIAL_T)->ops->flush_input) ((SERIAL_T)))
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/* Send a break between 0.25 and 0.5 seconds long. */
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#define SERIAL_SEND_BREAK(SERIAL_T) \
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((*(SERIAL_T)->ops->send_break) (SERIAL_T))
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/* Turn the port into raw mode. */
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#define SERIAL_RAW(SERIAL_T) (SERIAL_T)->ops->go_raw((SERIAL_T))
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/* Return a pointer to a newly malloc'd ttystate containing the state
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of the tty. */
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#define SERIAL_GET_TTY_STATE(SERIAL_T) (SERIAL_T)->ops->get_tty_state((SERIAL_T))
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/* Set the state of the tty to TTYSTATE. The change is immediate.
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When changing to or from raw mode, input might be discarded.
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Returns 0 for success, negative value for error (in which case errno
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contains the error). */
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#define SERIAL_SET_TTY_STATE(SERIAL_T, TTYSTATE) (SERIAL_T)->ops->set_tty_state((SERIAL_T), (TTYSTATE))
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/* printf_filtered a user-comprehensible description of ttystate. */
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#define SERIAL_PRINT_TTY_STATE(SERIAL_T, TTYSTATE) \
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((*((SERIAL_T)->ops->print_tty_state)) ((SERIAL_T), (TTYSTATE)))
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/* Set the tty state to NEW_TTYSTATE, where OLD_TTYSTATE is the
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current state (generally obtained from a recent call to
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SERIAL_GET_TTY_STATE), but be careful not to discard any input.
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This means that we never switch in or out of raw mode, even
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if NEW_TTYSTATE specifies a switch. */
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#define SERIAL_NOFLUSH_SET_TTY_STATE(SERIAL_T, NEW_TTYSTATE, OLD_TTYSTATE) \
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((*((SERIAL_T)->ops->noflush_set_tty_state)) \
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((SERIAL_T), (NEW_TTYSTATE), (OLD_TTYSTATE)))
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/* Read one char from the serial device with TIMEOUT seconds to wait
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or -1 to wait forever. Use timeout of 0 to effect a poll. Returns
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char if ok, else one of the following codes. Note that all error
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codes are guaranteed to be < 0. */
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#define SERIAL_ERROR -1 /* General error, see errno for details */
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#define SERIAL_TIMEOUT -2
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#define SERIAL_EOF -3
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#define SERIAL_READCHAR(SERIAL_T, TIMEOUT) ((SERIAL_T)->ops->readchar((SERIAL_T), TIMEOUT))
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/* Set the baudrate to the decimal value supplied. Returns 0 for success,
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-1 for failure. */
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#define SERIAL_SETBAUDRATE(SERIAL_T, RATE) ((SERIAL_T)->ops->setbaudrate((SERIAL_T), RATE))
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/* Set the number of stop bits to the value specified. Returns 0 for success,
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-1 for failure. */
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#define SERIAL_1_STOPBITS 1
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#define SERIAL_1_AND_A_HALF_STOPBITS 2 /* 1.5 bits, snicker... */
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#define SERIAL_2_STOPBITS 3
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#define SERIAL_SETSTOPBITS(SERIAL_T, NUM) ((SERIAL_T)->ops->setstopbits((SERIAL_T), NUM))
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/* Write LEN chars from STRING to the port SERIAL_T. Returns 0 for
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success, non-zero for failure. */
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#define SERIAL_WRITE(SERIAL_T, STRING, LEN) ((SERIAL_T)->ops->write((SERIAL_T), STRING, LEN))
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/* Push out all buffers, close the device and destroy SERIAL_T. */
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void serial_close PARAMS ((serial_t));
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#define SERIAL_CLOSE(SERIAL_T) serial_close(SERIAL_T)
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/* Destroy SERIAL_T without doing the rest of the stuff that SERIAL_CLOSE
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does. */
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#define SERIAL_UN_FDOPEN(SERIAL_T) (free (SERIAL_T))
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#endif /* SERIAL_H */
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