/* Remote serial support interface definitions for GDB, the GNU Debugger.
- Copyright 1992, 1993, 1994, 1995, 1996, 1998, 1999, 2000
- Free Software Foundation, Inc.
+ Copyright (C) 1992, 1993, 1994, 1995, 1996, 1998, 1999, 2000, 2001, 2004,
+ 2005, 2006, 2007 Free Software Foundation, Inc.
This file is part of GDB.
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. */
+ Foundation, Inc., 51 Franklin Street, Fifth Floor,
+ Boston, MA 02110-1301, USA. */
#ifndef SERIAL_H
#define SERIAL_H
+#ifdef USE_WIN32API
+#include <windows.h>
+#endif
+
+struct ui_file;
+
/* For most routines, if a failure is indicated, then errno should be
examined. */
/* Terminal state pointer. This is specific to each type of
- interface. */
+ interface. */
typedef void *serial_ttystate;
struct serial;
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. */
+ added to GDB if necessary. */
extern struct serial *serial_open (const char *name);
+/* Find an already opened serial stream using a file handle. */
+
+extern struct serial *serial_for_fd (int fd);
+
/* Open a new serial stream using a file handle. */
extern struct serial *serial_fdopen (const int fd);
-/* Push out all buffers, close the device and destroy SCB. */
+/* Push out all buffers, close the device and destroy SCB. */
extern void serial_close (struct serial *scb);
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. */
+ guaranteed to be < 0. */
enum serial_rc {
- SERIAL_ERROR = -1, /* General error. */
+ SERIAL_ERROR = -1, /* General error. */
SERIAL_TIMEOUT = -2, /* Timeout or data-not-ready during read.
- Unfortunately, through ui_loop_hook(), this
- can also be a QUIT indication. */
+ Unfortunately, through
+ deprecated_ui_loop_hook (), this can also
+ be a QUIT indication. */
SERIAL_EOF = -3 /* General end-of-file or remote target
connection closed, indication. Includes
- things like the line dropping dead. */
+ things like the line dropping dead. */
};
extern int serial_readchar (struct serial *scb, int timeout);
extern int serial_write (struct serial *scb, const char *str, int len);
-/* Write a printf style string onto the serial port. */
+/* Write a printf style string onto the serial port. */
-extern void serial_printf (struct serial *desc, const char *,...) ATTR_FORMAT (printf, 2, 3);
+extern void serial_printf (struct serial *desc,
+ const char *,...) ATTR_FORMAT (printf, 2, 3);
-/* Allow pending output to drain. */
+/* Allow pending output to drain. */
extern int serial_drain_output (struct serial *);
extern int serial_send_break (struct serial *scb);
-/* Turn the port into raw mode. */
+/* Turn the port into raw mode. */
extern void serial_raw (struct serial *scb);
/* printf_filtered a user-comprehensible description of ttystate on
the specified STREAM. FIXME: At present this sends output to the
- default stream - GDB_STDOUT. */
+ default stream - GDB_STDOUT. */
extern void serial_print_tty_state (struct serial *scb, serial_ttystate ttystate, struct ui_file *);
success, -1 for failure. */
#define SERIAL_1_STOPBITS 1
-#define SERIAL_1_AND_A_HALF_STOPBITS 2 /* 1.5 bits, snicker... */
+#define SERIAL_1_AND_A_HALF_STOPBITS 2 /* 1.5 bits, snicker... */
#define SERIAL_2_STOPBITS 3
extern int serial_setstopbits (struct serial *scb, int num);
/* For ASYNC enabled devices, register a callback and enable
asynchronous mode. To disable asynchronous mode, register a NULL
- callback. */
+ callback. */
typedef void (serial_event_ftype) (struct serial *scb, void *context);
extern void serial_async (struct serial *scb, serial_event_ftype *handler, void *context);
/* 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. */
+ applicable to the current serial device. */
extern int deprecated_serial_fd (struct serial *scb);
/* Trace/debug mechanism.
serial_debug() enables/disables internal debugging.
- serial_debug_p() indicates the current debug state. */
+ serial_debug_p() indicates the current debug state. */
extern void serial_debug (struct serial *scb, int debug_p);
struct serial
{
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;
struct serial_ops *ops; /* Function vector */
void *state; /* Local context info for open FD */
serial_ttystate ttystate; /* Not used (yet) */
int bufcnt; /* Amount of data remaining in receive
- buffer. -ve for sticky errors. */
+ buffer. -ve for sticky errors. */
unsigned char *bufp; /* Current byte */
unsigned char buf[BUFSIZ]; /* Da buffer itself */
int current_timeout; /* (ser-unix.c termio{,s} only), last
char *name; /* The name of the device or host */
struct serial *next; /* Pointer to the next `struct serial *' */
int refcnt; /* Number of pointers to this block */
- int debug_p; /* Trace this serial devices operation. */
- int async_state; /* Async internal state. */
+ int debug_p; /* Trace this serial devices operation. */
+ int async_state; /* Async internal state. */
void *async_context; /* Async event thread's context */
serial_event_ftype *async_handler;/* Async event handler */
};
int (*drain_output) (struct serial *);
/* Change the serial device into/out of asynchronous mode, call
the specified function when ever there is something
- interesting. */
+ interesting. */
void (*async) (struct serial *scb, int async_p);
+ /* Perform a low-level read operation, reading (at most) COUNT
+ bytes into SCB->BUF. */
+ 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);
+
+#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);
+#endif /* USE_WIN32API */
};
/* Add a new serial interface to the interface list */
extern void serial_log_command (const char *);
+#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 *);
+
+#endif /* USE_WIN32API */
+
#endif /* SERIAL_H */
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