binutils-gdb/gdb/serial.h

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/* Remote serial support interface definitions for GDB, the GNU Debugger.
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Copyright (C) 1992, 1993, 1994, 1995, 1996, 1998, 1999, 2000, 2001, 2004,
2005, 2006, 2007 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
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 3 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,
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.
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You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>. */
#ifndef SERIAL_H
#define SERIAL_H
* NEWS: Mention native Windows support. * Makefile.in (gdb_select_h, ser_tcp_h): New. (ALLDEPFILES): Add ser-mingw.c. (event-loop.o, inflow.o, mingw-hdep.o, posix-hdep.o, ser-base.o) (ser-tcp.o, ser-unix.o): Update. (ser-mingw.o): New rule. * configure: Regenerated. * configure.ac: Add ser-mingw.o for mingw32. * ser-mingw.c: New file. * event-loop.c: Include "gdb_select.h". (gdb_select): Remove, moved to mingw-hdep.c and posix-hdep.c. * ser-base.c: Include "gdb_select.h". (ser_base_wait_for): Use gdb_select. * serial.c (serial_for_fd): New function. (serial_fdopen): Try "terminal" before "hardwire". Initialize the allocated struct serial. (serial_wait_handle): New function. * serial.h (serial_for_fd, serial_wait_handle): New prototypes. (struct serial_ops) [USE_WIN32API]: Add wait_handle. * gdb_select.h: New file. * ser-tcp.c: Include "ser-tcp.h". Remove unused "ser-unix.h" include. (net_close, net_read_prim, net_write_prim): Make global. (net_open): Likewise. Pass an exception set to select. Whitespace fix. Document why we can not use gdb_select. (_initialize_ser_tcp) [USE_WIN32API]: Do not register TCP support here. * ser-tcp.h: New file. * inflow.c (gdb_has_a_terminal): Don't initialize stdin_serial here. (handle_sigio): Use gdb_select. (initialize_stdin_serial): New function. * terminal.h (initialize_stdin_serial): New prototype. * top.c (gdb_init): Call initialize_stdin_serial. * mingw-hdep.c (gdb_select): New function, moved from gdb_select in event-loop.c. Add exception condition support. Use serial_for_fd and serial_wait_handle. Fix timeout handling. * posix-hdep.c: Include "gdb_select.h". (gdb_select): New function. * remote-st.c (connect_command): Use gdb_select. * ser-unix.c: Include "gdb_select.h". (hardwire_send_break, wait_for): Use gdb_select.
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#ifdef USE_WIN32API
#include <windows.h>
#endif
struct ui_file;
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/* For most routines, if a failure is indicated, then errno should be
examined. */
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/* Terminal state pointer. This is specific to each type of
interface. */
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typedef void *serial_ttystate;
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struct serial;
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/* Try to open NAME. Returns a new `struct serial *' on success, NULL
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on failure. Note that some open calls can block and, if possible,
should be written to be non-blocking, with calls to ui_look_hook
so they can be cancelled. An async interface for open could be
added to GDB if necessary. */
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extern struct serial *serial_open (const char *name);
* NEWS: Mention native Windows support. * Makefile.in (gdb_select_h, ser_tcp_h): New. (ALLDEPFILES): Add ser-mingw.c. (event-loop.o, inflow.o, mingw-hdep.o, posix-hdep.o, ser-base.o) (ser-tcp.o, ser-unix.o): Update. (ser-mingw.o): New rule. * configure: Regenerated. * configure.ac: Add ser-mingw.o for mingw32. * ser-mingw.c: New file. * event-loop.c: Include "gdb_select.h". (gdb_select): Remove, moved to mingw-hdep.c and posix-hdep.c. * ser-base.c: Include "gdb_select.h". (ser_base_wait_for): Use gdb_select. * serial.c (serial_for_fd): New function. (serial_fdopen): Try "terminal" before "hardwire". Initialize the allocated struct serial. (serial_wait_handle): New function. * serial.h (serial_for_fd, serial_wait_handle): New prototypes. (struct serial_ops) [USE_WIN32API]: Add wait_handle. * gdb_select.h: New file. * ser-tcp.c: Include "ser-tcp.h". Remove unused "ser-unix.h" include. (net_close, net_read_prim, net_write_prim): Make global. (net_open): Likewise. Pass an exception set to select. Whitespace fix. Document why we can not use gdb_select. (_initialize_ser_tcp) [USE_WIN32API]: Do not register TCP support here. * ser-tcp.h: New file. * inflow.c (gdb_has_a_terminal): Don't initialize stdin_serial here. (handle_sigio): Use gdb_select. (initialize_stdin_serial): New function. * terminal.h (initialize_stdin_serial): New prototype. * top.c (gdb_init): Call initialize_stdin_serial. * mingw-hdep.c (gdb_select): New function, moved from gdb_select in event-loop.c. Add exception condition support. Use serial_for_fd and serial_wait_handle. Fix timeout handling. * posix-hdep.c: Include "gdb_select.h". (gdb_select): New function. * remote-st.c (connect_command): Use gdb_select. * ser-unix.c: Include "gdb_select.h". (hardwire_send_break, wait_for): Use gdb_select.
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/* Find an already opened serial stream using a file handle. */
extern struct serial *serial_for_fd (int fd);
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/* Open a new serial stream using a file handle. */
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extern struct serial *serial_fdopen (const int fd);
/* Push out all buffers, close the device and destroy SCB. */
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extern void serial_close (struct serial *scb);
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/* Push out all buffers and destroy SCB without closing the device. */
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extern void serial_un_fdopen (struct serial *scb);
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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.
Infinite waits are not permitted. Returns unsigned char if ok, else
one of the following codes. Note that all error return-codes are
guaranteed to be < 0. */
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enum serial_rc {
SERIAL_ERROR = -1, /* General error. */
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SERIAL_TIMEOUT = -2, /* Timeout or data-not-ready during read.
Unfortunately, through
deprecated_ui_loop_hook (), this can also
be a QUIT indication. */
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SERIAL_EOF = -3 /* General end-of-file or remote target
connection closed, indication. Includes
things like the line dropping dead. */
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};
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extern int serial_readchar (struct serial *scb, int timeout);
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/* Write LEN chars from STRING to the port SCB. Returns 0 for
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success, non-zero for failure. */
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extern int serial_write (struct serial *scb, const char *str, int len);
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/* Write a printf style string onto the serial port. */
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extern void serial_printf (struct serial *desc,
const char *,...) ATTR_FORMAT (printf, 2, 3);
/* Allow pending output to drain. */
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extern int serial_drain_output (struct serial *);
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/* Flush (discard) pending output. Might also flush input (if this
system can't flush only output). */
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extern int serial_flush_output (struct serial *);
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/* Flush pending input. Might also flush output (if this system can't
flush only input). */
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extern int serial_flush_input (struct serial *);
/* Send a break between 0.25 and 0.5 seconds long. */
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extern int serial_send_break (struct serial *scb);
/* Turn the port into raw mode. */
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extern void serial_raw (struct serial *scb);
/* Return a pointer to a newly malloc'd ttystate containing the state
of the tty. */
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extern serial_ttystate serial_get_tty_state (struct serial *scb);
/* Set the state of the tty to TTYSTATE. The change is immediate.
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 contains the error). */
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extern int serial_set_tty_state (struct serial *scb, serial_ttystate ttystate);
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/* printf_filtered a user-comprehensible description of ttystate on
the specified STREAM. FIXME: At present this sends output to the
default stream - GDB_STDOUT. */
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extern void serial_print_tty_state (struct serial *scb, serial_ttystate ttystate, struct ui_file *);
/* Set the tty state to NEW_TTYSTATE, where OLD_TTYSTATE is the
current state (generally obtained from a recent call to
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 if
NEW_TTYSTATE specifies a switch. */
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extern int serial_noflush_set_tty_state (struct serial *scb, serial_ttystate new_ttystate, serial_ttystate old_ttystate);
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/* Set the baudrate to the decimal value supplied. Returns 0 for
success, -1 for failure. */
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extern int serial_setbaudrate (struct serial *scb, int rate);
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/* Set the number of stop bits to the value specified. Returns 0 for
success, -1 for failure. */
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#define SERIAL_1_STOPBITS 1
#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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extern int serial_setstopbits (struct serial *scb, int num);
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/* Asynchronous serial interface: */
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/* Can the serial device support asynchronous mode? */
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extern int serial_can_async_p (struct serial *scb);
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/* Has the serial device been put in asynchronous mode? */
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extern int serial_is_async_p (struct serial *scb);
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/* For ASYNC enabled devices, register a callback and enable
asynchronous mode. To disable asynchronous mode, register a NULL
callback. */
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typedef void (serial_event_ftype) (struct serial *scb, void *context);
extern void serial_async (struct serial *scb, serial_event_ftype *handler, void *context);
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/* Provide direct access to the underlying FD (if any) used to
implement the serial device. This interface is clearly
deprecated. Will call internal_error() if the operation isn't
applicable to the current serial device. */
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extern int deprecated_serial_fd (struct serial *scb);
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/* Trace/debug mechanism.
serial_debug() enables/disables internal debugging.
serial_debug_p() indicates the current debug state. */
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extern void serial_debug (struct serial *scb, int debug_p);
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extern int serial_debug_p (struct serial *scb);
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/* Details of an instance of a serial object */
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struct serial
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{
int fd; /* File descriptor */
/* File descriptor for a separate error stream that should be
immediately forwarded to gdb_stderr. This may be -1.
If != -1, this descriptor should be non-blocking or
ops->avail should be non-NULL. */
int error_fd;
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struct serial_ops *ops; /* Function vector */
void *state; /* Local context info for open FD */
serial_ttystate ttystate; /* Not used (yet) */
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int bufcnt; /* Amount of data remaining in receive
buffer. -ve for sticky errors. */
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unsigned char *bufp; /* Current byte */
unsigned char buf[BUFSIZ]; /* Da buffer itself */
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int current_timeout; /* (ser-unix.c termio{,s} only), last
value of VTIME */
int timeout_remaining; /* (ser-unix.c termio{,s} only), we
still need to wait for this many
more seconds. */
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char *name; /* The name of the device or host */
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struct serial *next; /* Pointer to the next `struct serial *' */
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int refcnt; /* Number of pointers to this block */
int debug_p; /* Trace this serial devices operation. */
int async_state; /* Async internal state. */
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void *async_context; /* Async event thread's context */
serial_event_ftype *async_handler;/* Async event handler */
};
struct serial_ops
{
char *name;
struct serial_ops *next;
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int (*open) (struct serial *, const char *name);
void (*close) (struct serial *);
int (*readchar) (struct serial *, int timeout);
int (*write) (struct serial *, const char *str, int len);
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/* Discard pending output */
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int (*flush_output) (struct serial *);
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/* Discard pending input */
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int (*flush_input) (struct serial *);
int (*send_break) (struct serial *);
void (*go_raw) (struct serial *);
serial_ttystate (*get_tty_state) (struct serial *);
int (*set_tty_state) (struct serial *, serial_ttystate);
void (*print_tty_state) (struct serial *, serial_ttystate,
struct ui_file *);
int (*noflush_set_tty_state) (struct serial *, serial_ttystate,
serial_ttystate);
int (*setbaudrate) (struct serial *, int rate);
int (*setstopbits) (struct serial *, int num);
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/* Wait for output to drain */
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int (*drain_output) (struct serial *);
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/* Change the serial device into/out of asynchronous mode, call
the specified function when ever there is something
interesting. */
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void (*async) (struct serial *scb, int async_p);
/* Perform a low-level read operation, reading (at most) COUNT
bytes into SCB->BUF. Return zero at end of file. */
int (*read_prim)(struct serial *scb, size_t count);
/* Perform a low-level write operation, writing (at most) COUNT
bytes from BUF. */
int (*write_prim)(struct serial *scb, const void *buf, size_t count);
/* Return that number of bytes that can be read from FD
without blocking. Return value of -1 means that the
the read will not block even if less that requested bytes
are available. */
int (*avail)(struct serial *scb, int fd);
* NEWS: Mention native Windows support. * Makefile.in (gdb_select_h, ser_tcp_h): New. (ALLDEPFILES): Add ser-mingw.c. (event-loop.o, inflow.o, mingw-hdep.o, posix-hdep.o, ser-base.o) (ser-tcp.o, ser-unix.o): Update. (ser-mingw.o): New rule. * configure: Regenerated. * configure.ac: Add ser-mingw.o for mingw32. * ser-mingw.c: New file. * event-loop.c: Include "gdb_select.h". (gdb_select): Remove, moved to mingw-hdep.c and posix-hdep.c. * ser-base.c: Include "gdb_select.h". (ser_base_wait_for): Use gdb_select. * serial.c (serial_for_fd): New function. (serial_fdopen): Try "terminal" before "hardwire". Initialize the allocated struct serial. (serial_wait_handle): New function. * serial.h (serial_for_fd, serial_wait_handle): New prototypes. (struct serial_ops) [USE_WIN32API]: Add wait_handle. * gdb_select.h: New file. * ser-tcp.c: Include "ser-tcp.h". Remove unused "ser-unix.h" include. (net_close, net_read_prim, net_write_prim): Make global. (net_open): Likewise. Pass an exception set to select. Whitespace fix. Document why we can not use gdb_select. (_initialize_ser_tcp) [USE_WIN32API]: Do not register TCP support here. * ser-tcp.h: New file. * inflow.c (gdb_has_a_terminal): Don't initialize stdin_serial here. (handle_sigio): Use gdb_select. (initialize_stdin_serial): New function. * terminal.h (initialize_stdin_serial): New prototype. * top.c (gdb_init): Call initialize_stdin_serial. * mingw-hdep.c (gdb_select): New function, moved from gdb_select in event-loop.c. Add exception condition support. Use serial_for_fd and serial_wait_handle. Fix timeout handling. * posix-hdep.c: Include "gdb_select.h". (gdb_select): New function. * remote-st.c (connect_command): Use gdb_select. * ser-unix.c: Include "gdb_select.h". (hardwire_send_break, wait_for): Use gdb_select.
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#ifdef USE_WIN32API
/* Return a handle to wait on, indicating available data from SCB
when signaled, in *READ. Return a handle indicating errors
in *EXCEPT. */
void (*wait_handle) (struct serial *scb, HANDLE *read, HANDLE *except);
void (*done_wait_handle) (struct serial *scb);
* NEWS: Mention native Windows support. * Makefile.in (gdb_select_h, ser_tcp_h): New. (ALLDEPFILES): Add ser-mingw.c. (event-loop.o, inflow.o, mingw-hdep.o, posix-hdep.o, ser-base.o) (ser-tcp.o, ser-unix.o): Update. (ser-mingw.o): New rule. * configure: Regenerated. * configure.ac: Add ser-mingw.o for mingw32. * ser-mingw.c: New file. * event-loop.c: Include "gdb_select.h". (gdb_select): Remove, moved to mingw-hdep.c and posix-hdep.c. * ser-base.c: Include "gdb_select.h". (ser_base_wait_for): Use gdb_select. * serial.c (serial_for_fd): New function. (serial_fdopen): Try "terminal" before "hardwire". Initialize the allocated struct serial. (serial_wait_handle): New function. * serial.h (serial_for_fd, serial_wait_handle): New prototypes. (struct serial_ops) [USE_WIN32API]: Add wait_handle. * gdb_select.h: New file. * ser-tcp.c: Include "ser-tcp.h". Remove unused "ser-unix.h" include. (net_close, net_read_prim, net_write_prim): Make global. (net_open): Likewise. Pass an exception set to select. Whitespace fix. Document why we can not use gdb_select. (_initialize_ser_tcp) [USE_WIN32API]: Do not register TCP support here. * ser-tcp.h: New file. * inflow.c (gdb_has_a_terminal): Don't initialize stdin_serial here. (handle_sigio): Use gdb_select. (initialize_stdin_serial): New function. * terminal.h (initialize_stdin_serial): New prototype. * top.c (gdb_init): Call initialize_stdin_serial. * mingw-hdep.c (gdb_select): New function, moved from gdb_select in event-loop.c. Add exception condition support. Use serial_for_fd and serial_wait_handle. Fix timeout handling. * posix-hdep.c: Include "gdb_select.h". (gdb_select): New function. * remote-st.c (connect_command): Use gdb_select. * ser-unix.c: Include "gdb_select.h". (hardwire_send_break, wait_for): Use gdb_select.
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#endif /* USE_WIN32API */
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};
/* Add a new serial interface to the interface list */
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extern void serial_add_interface (struct serial_ops * optable);
/* File in which to record the remote debugging session */
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extern void serial_log_command (const char *);
* NEWS: Mention native Windows support. * Makefile.in (gdb_select_h, ser_tcp_h): New. (ALLDEPFILES): Add ser-mingw.c. (event-loop.o, inflow.o, mingw-hdep.o, posix-hdep.o, ser-base.o) (ser-tcp.o, ser-unix.o): Update. (ser-mingw.o): New rule. * configure: Regenerated. * configure.ac: Add ser-mingw.o for mingw32. * ser-mingw.c: New file. * event-loop.c: Include "gdb_select.h". (gdb_select): Remove, moved to mingw-hdep.c and posix-hdep.c. * ser-base.c: Include "gdb_select.h". (ser_base_wait_for): Use gdb_select. * serial.c (serial_for_fd): New function. (serial_fdopen): Try "terminal" before "hardwire". Initialize the allocated struct serial. (serial_wait_handle): New function. * serial.h (serial_for_fd, serial_wait_handle): New prototypes. (struct serial_ops) [USE_WIN32API]: Add wait_handle. * gdb_select.h: New file. * ser-tcp.c: Include "ser-tcp.h". Remove unused "ser-unix.h" include. (net_close, net_read_prim, net_write_prim): Make global. (net_open): Likewise. Pass an exception set to select. Whitespace fix. Document why we can not use gdb_select. (_initialize_ser_tcp) [USE_WIN32API]: Do not register TCP support here. * ser-tcp.h: New file. * inflow.c (gdb_has_a_terminal): Don't initialize stdin_serial here. (handle_sigio): Use gdb_select. (initialize_stdin_serial): New function. * terminal.h (initialize_stdin_serial): New prototype. * top.c (gdb_init): Call initialize_stdin_serial. * mingw-hdep.c (gdb_select): New function, moved from gdb_select in event-loop.c. Add exception condition support. Use serial_for_fd and serial_wait_handle. Fix timeout handling. * posix-hdep.c: Include "gdb_select.h". (gdb_select): New function. * remote-st.c (connect_command): Use gdb_select. * ser-unix.c: Include "gdb_select.h". (hardwire_send_break, wait_for): Use gdb_select.
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#ifdef USE_WIN32API
/* Windows-only: find or create handles that we can wait on for this
serial device. */
extern void serial_wait_handle (struct serial *, HANDLE *, HANDLE *);
/* Windows-only: signal that we are done with the wait handles. */
extern void serial_done_wait_handle (struct serial *);
* NEWS: Mention native Windows support. * Makefile.in (gdb_select_h, ser_tcp_h): New. (ALLDEPFILES): Add ser-mingw.c. (event-loop.o, inflow.o, mingw-hdep.o, posix-hdep.o, ser-base.o) (ser-tcp.o, ser-unix.o): Update. (ser-mingw.o): New rule. * configure: Regenerated. * configure.ac: Add ser-mingw.o for mingw32. * ser-mingw.c: New file. * event-loop.c: Include "gdb_select.h". (gdb_select): Remove, moved to mingw-hdep.c and posix-hdep.c. * ser-base.c: Include "gdb_select.h". (ser_base_wait_for): Use gdb_select. * serial.c (serial_for_fd): New function. (serial_fdopen): Try "terminal" before "hardwire". Initialize the allocated struct serial. (serial_wait_handle): New function. * serial.h (serial_for_fd, serial_wait_handle): New prototypes. (struct serial_ops) [USE_WIN32API]: Add wait_handle. * gdb_select.h: New file. * ser-tcp.c: Include "ser-tcp.h". Remove unused "ser-unix.h" include. (net_close, net_read_prim, net_write_prim): Make global. (net_open): Likewise. Pass an exception set to select. Whitespace fix. Document why we can not use gdb_select. (_initialize_ser_tcp) [USE_WIN32API]: Do not register TCP support here. * ser-tcp.h: New file. * inflow.c (gdb_has_a_terminal): Don't initialize stdin_serial here. (handle_sigio): Use gdb_select. (initialize_stdin_serial): New function. * terminal.h (initialize_stdin_serial): New prototype. * top.c (gdb_init): Call initialize_stdin_serial. * mingw-hdep.c (gdb_select): New function, moved from gdb_select in event-loop.c. Add exception condition support. Use serial_for_fd and serial_wait_handle. Fix timeout handling. * posix-hdep.c: Include "gdb_select.h". (gdb_select): New function. * remote-st.c (connect_command): Use gdb_select. * ser-unix.c: Include "gdb_select.h". (hardwire_send_break, wait_for): Use gdb_select.
2006-02-10 23:01:43 +01:00
#endif /* USE_WIN32API */
#endif /* SERIAL_H */