diff options
Diffstat (limited to 'gdb')
| -rw-r--r-- | gdb/ChangeLog | 64 | ||||
| -rw-r--r-- | gdb/Makefile.in | 13 | ||||
| -rwxr-xr-x | gdb/configure | 3 | ||||
| -rw-r--r-- | gdb/configure.ac | 3 | ||||
| -rw-r--r-- | gdb/ser-base.c | 306 | ||||
| -rw-r--r-- | gdb/ser-base.h | 50 | ||||
| -rw-r--r-- | gdb/ser-pipe.c | 1 | ||||
| -rw-r--r-- | gdb/ser-tcp.c | 1 | ||||
| -rw-r--r-- | gdb/ser-unix.c | 292 | ||||
| -rw-r--r-- | gdb/ser-unix.h | 27 |
10 files changed, 437 insertions, 323 deletions
diff --git a/gdb/ChangeLog b/gdb/ChangeLog index 03d5115..6f1d99c 100644 --- a/gdb/ChangeLog +++ b/gdb/ChangeLog @@ -1,3 +1,67 @@ +2005-03-25 Mark Mitchell <mark@codesourcery.com> + + * Makefile.in (SFILES): Add ser-base.c. + (ser_base_h): New variable. + (ser-base.o): New target. + (ser-pipe.o): Depend on $(ser_base_h). + (ser-tcp.o): Likewise. + (ser-unix.o): Likewise. Do not depend on $(event_loop_h). + * configure.ac (SER_HARDWIRE): Include ser-base.o where + appropriate. + * ser-base.c: New file. + (push_event): Move from ser-unix.c. + (fd_event): Likewise. + (reschedule): Likewise. + (ser_unix_write): Likewise. + (ser_unix_nop_flush_output): Likewise. + (ser_unix_flush_input): Likewise. + (ser_unix_nop_send_break): Likewise. + (ser_unix_nop_drain_output): Likewise. + (ser_unix_nop_raw): Likewise. + (ser_unix_nop_get_tty_state): Likewise. + (ser_unix_nop_set_tty_state): Likewise. + (ser_unix_nop_noflush_set_tty_state): Likewise. + (ser_unix_nop_print_tty_state): Likewise. + (ser_unix_nop_setbaudrate): Likewise. + (ser_unix_nop_setstopbits): Likewise. + (ser_unix_async): Likewise. + * ser-base.h: New file. + * ser-pipe.c (ser-base.h): Include it. + * ser-tcp.c (ser-base.h): Likewise. + * ser-unix.h (ser_unix_nop_flush_output): Remove. + (ser_unix_flush_input): Likewise. + (ser_unix_nop_send_break): Likewise. + (ser_unix_nop_raw): Likewise. + (ser_unix_nop_get_tty_state): Likewise. + (ser_unix_nop_set_tty_state): Likewise. + (ser_unix_nop_print_tty_state): Likewise. + (ser_unix_nop_noflush_set_tty_state): Likewise. + (ser_unix_nop_setbaudrate): Likewise. + (ser_unix_nop_setstopbits): Likewise. + (ser_unix_nop_drain_output): Likewise. + (ser_unix_wait_for): Likewise. + (ser_unix_write): Likewise. + (ser_unix_async): Likewise. + * ser-unix.c (event-loop.h): Do not include it. + (push_event): Move to ser-base.c. + (fd_event): Likewise. + (reschedule): Likewise. + (ser_unix_write): Likewise. + (ser_unix_nop_flush_output): Likewise. + (ser_unix_flush_input): Likewise. + (ser_unix_nop_send_break): Likewise. + (ser_unix_nop_drain_output): Likewise. + (ser_unix_nop_raw): Likewise. + (ser_unix_nop_get_tty_state): Likewise. + (ser_unix_nop_set_tty_state): Likewise. + (ser_unix_nop_noflush_set_tty_state): Likewise. + (ser_unix_nop_print_tty_state): Likewise. + (ser_unix_nop_setbaudrate): Likewise. + (ser_unix_nop_setstopbits): Likewise. + (ser_unix_async): Likewise. + (ser_unix_wait_for): Make it static. + * configure: Regenerated. + 2005-03-25 Mark Kettenis <kettenis@gnu.org> * dwarf2-frame.h: Update copyrigh year. diff --git a/gdb/Makefile.in b/gdb/Makefile.in index ec044fc..985f852 100644 --- a/gdb/Makefile.in +++ b/gdb/Makefile.in @@ -545,7 +545,7 @@ SFILES = ada-exp.y ada-lang.c ada-typeprint.c ada-valprint.c \ regcache.c reggroups.c remote.c remote-fileio.c \ scm-exp.c scm-lang.c scm-valprint.c \ sentinel-frame.c \ - serial.c ser-unix.c source.c \ + serial.c ser-base.c ser-unix.c source.c \ stabsread.c stack.c std-regs.c symfile.c symfile-mem.c symmisc.c \ symtab.c \ target.c thread.c top.c tracepoint.c \ @@ -764,6 +764,7 @@ scm_lang_h = scm-lang.h $(scm_tags_h) scm_tags_h = scm-tags.h sentinel_frame_h = sentinel-frame.h serial_h = serial.h +ser_base_h = ser-base.h ser_unix_h = ser-unix.h shnbsd_tdep_h = shnbsd-tdep.h sh_tdep_h = sh-tdep.h @@ -2485,11 +2486,13 @@ sentinel-frame.o: sentinel-frame.c $(defs_h) $(regcache_h) \ ser-e7kpc.o: ser-e7kpc.c $(defs_h) $(serial_h) $(gdb_string_h) ser-go32.o: ser-go32.c $(defs_h) $(gdbcmd_h) $(serial_h) $(gdb_string_h) serial.o: serial.c $(defs_h) $(serial_h) $(gdb_string_h) $(gdbcmd_h) -ser-pipe.o: ser-pipe.c $(defs_h) $(serial_h) $(ser_unix_h) $(gdb_vfork_h) \ +ser-base.o: ser-base.c $(defs_h) $(serial_h) $(ser_base_h) $(event_loop_h) +ser-pipe.o: ser-pipe.c $(defs_h) $(serial_h) $(ser_base_h) $(ser_unix_h) \ + $(gdb_vfork_h) $(gdb_string_h) +ser-tcp.o: ser-tcp.c $(defs_h) $(serial_h) $(ser_base_h) $(ser_unix_h) \ $(gdb_string_h) -ser-tcp.o: ser-tcp.c $(defs_h) $(serial_h) $(ser_unix_h) $(gdb_string_h) -ser-unix.o: ser-unix.c $(defs_h) $(serial_h) $(ser_unix_h) $(terminal_h) \ - $(gdb_string_h) $(event_loop_h) +ser-unix.o: ser-unix.c $(defs_h) $(serial_h) $(ser_base_h) $(ser_unix_h) \ + $(terminal_h) $(gdb_string_h) sh3-rom.o: sh3-rom.c $(defs_h) $(gdbcore_h) $(target_h) $(monitor_h) \ $(serial_h) $(srec_h) $(arch_utils_h) $(regcache_h) $(gdb_string_h) \ $(sh_tdep_h) diff --git a/gdb/configure b/gdb/configure index 49368cc..39af594 100755 --- a/gdb/configure +++ b/gdb/configure @@ -20016,10 +20016,11 @@ echo "$as_me:$LINENO: result: $gdb_cv_os_cygwin" >&5 echo "${ECHO_T}$gdb_cv_os_cygwin" >&6 -SER_HARDWIRE="ser-unix.o ser-pipe.o ser-tcp.o" +SER_HARDWIRE="ser-base.o ser-unix.o ser-pipe.o ser-tcp.o" case ${host} in *go32* ) SER_HARDWIRE=ser-go32.o ;; *djgpp* ) SER_HARDWIRE=ser-go32.o ;; + *mingw32*) SER_HARDWIRE="ser-base.o ser-tcp.o" ;; esac diff --git a/gdb/configure.ac b/gdb/configure.ac index 1503a5d..6113b0d 100644 --- a/gdb/configure.ac +++ b/gdb/configure.ac @@ -1170,10 +1170,11 @@ lose dnl Figure out which of the many generic ser-*.c files the _host_ supports. -SER_HARDWIRE="ser-unix.o ser-pipe.o ser-tcp.o" +SER_HARDWIRE="ser-base.o ser-unix.o ser-pipe.o ser-tcp.o" case ${host} in *go32* ) SER_HARDWIRE=ser-go32.o ;; *djgpp* ) SER_HARDWIRE=ser-go32.o ;; + *mingw32*) SER_HARDWIRE="ser-base.o ser-tcp.o" ;; esac AC_SUBST(SER_HARDWIRE) diff --git a/gdb/ser-base.c b/gdb/ser-base.c new file mode 100644 index 0000000..aaf1d76 --- /dev/null +++ b/gdb/ser-base.c @@ -0,0 +1,306 @@ +/* Generic serial interface functions. + + Copyright 1992, 1993, 1994, 1995, 1996, 1998, 1999, 2000, 2001, + 2003, 2004, 2005 Free Software Foundation, Inc. + + 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 "ser-unix.h" +#include "event-loop.h" + +static timer_handler_func push_event; +static handler_func fd_event; + +/* Event handling for ASYNC serial code. + + At any time the SERIAL device either: has an empty FIFO and is + waiting on a FD event; or has a non-empty FIFO/error condition and + is constantly scheduling timer events. + + ASYNC only stops pestering its client when it is de-async'ed or it + is told to go away. */ + +/* Value of scb->async_state: */ +enum { + /* >= 0 (TIMER_SCHEDULED) */ + /* The ID of the currently scheduled timer event. This state is + rarely encountered. Timer events are one-off so as soon as the + event is delivered the state is shanged to NOTHING_SCHEDULED. */ + FD_SCHEDULED = -1, + /* The fd_event() handler is scheduled. It is called when ever the + file descriptor becomes ready. */ + NOTHING_SCHEDULED = -2 + /* Either no task is scheduled (just going into ASYNC mode) or a + timer event has just gone off and the current state has been + forced into nothing scheduled. */ +}; + +/* Identify and schedule the next ASYNC task based on scb->async_state + and scb->buf* (the input FIFO). A state machine is used to avoid + the need to make redundant calls into the event-loop - the next + scheduled task is only changed when needed. */ + +void +reschedule (struct serial *scb) +{ + if (serial_is_async_p (scb)) + { + int next_state; + switch (scb->async_state) + { + case FD_SCHEDULED: + if (scb->bufcnt == 0) + next_state = FD_SCHEDULED; + else + { + delete_file_handler (scb->fd); + next_state = create_timer (0, push_event, scb); + } + break; + case NOTHING_SCHEDULED: + if (scb->bufcnt == 0) + { + add_file_handler (scb->fd, fd_event, scb); + next_state = FD_SCHEDULED; + } + else + { + next_state = create_timer (0, push_event, scb); + } + break; + default: /* TIMER SCHEDULED */ + if (scb->bufcnt == 0) + { + delete_timer (scb->async_state); + add_file_handler (scb->fd, fd_event, scb); + next_state = FD_SCHEDULED; + } + else + next_state = scb->async_state; + break; + } + if (serial_debug_p (scb)) + { + switch (next_state) + { + case FD_SCHEDULED: + if (scb->async_state != FD_SCHEDULED) + fprintf_unfiltered (gdb_stdlog, "[fd%d->fd-scheduled]\n", + scb->fd); + break; + default: /* TIMER SCHEDULED */ + if (scb->async_state == FD_SCHEDULED) + fprintf_unfiltered (gdb_stdlog, "[fd%d->timer-scheduled]\n", + scb->fd); + break; + } + } + scb->async_state = next_state; + } +} + +/* FD_EVENT: This is scheduled when the input FIFO is empty (and there + is no pending error). As soon as data arrives, it is read into the + input FIFO and the client notified. The client should then drain + the FIFO using readchar(). If the FIFO isn't immediatly emptied, + push_event() is used to nag the client until it is. */ + +static void +fd_event (int error, void *context) +{ + struct serial *scb = context; + if (error != 0) + { + scb->bufcnt = SERIAL_ERROR; + } + else if (scb->bufcnt == 0) + { + /* Prime the input FIFO. The readchar() function is used to + pull characters out of the buffer. See also + generic_readchar(). */ + int nr; + do + { + nr = read (scb->fd, scb->buf, BUFSIZ); + } + while (nr == -1 && errno == EINTR); + if (nr == 0) + { + scb->bufcnt = SERIAL_EOF; + } + else if (nr > 0) + { + scb->bufcnt = nr; + scb->bufp = scb->buf; + } + else + { + scb->bufcnt = SERIAL_ERROR; + } + } + scb->async_handler (scb, scb->async_context); + reschedule (scb); +} + +/* PUSH_EVENT: The input FIFO is non-empty (or there is a pending + error). Nag the client until all the data has been read. In the + case of errors, the client will need to close or de-async the + device before naging stops. */ + +static void +push_event (void *context) +{ + struct serial *scb = context; + scb->async_state = NOTHING_SCHEDULED; /* Timers are one-off */ + scb->async_handler (scb, scb->async_context); + /* re-schedule */ + reschedule (scb); +} + +int +ser_unix_write (struct serial *scb, const char *str, int len) +{ + int cc; + + while (len > 0) + { + cc = write (scb->fd, str, len); + + if (cc < 0) + return 1; + len -= cc; + str += cc; + } + return 0; +} + +int +ser_unix_nop_flush_output (struct serial *scb) +{ + return 0; +} + +int +ser_unix_flush_input (struct serial *scb) +{ + if (scb->bufcnt >= 0) + { + scb->bufcnt = 0; + scb->bufp = scb->buf; + return 0; + } + else + return SERIAL_ERROR; +} + +int +ser_unix_nop_send_break (struct serial *scb) +{ + return 0; +} + +int +ser_unix_nop_drain_output (struct serial *scb) +{ + return 0; +} + +void +ser_unix_nop_raw (struct serial *scb) +{ + return; /* Always in raw mode */ +} + +serial_ttystate +ser_unix_nop_get_tty_state (struct serial *scb) +{ + /* allocate a dummy */ + return (serial_ttystate) XMALLOC (int); +} + +int +ser_unix_nop_set_tty_state (struct serial *scb, serial_ttystate ttystate) +{ + return 0; +} + +int +ser_unix_nop_noflush_set_tty_state (struct serial *scb, + serial_ttystate new_ttystate, + serial_ttystate old_ttystate) +{ + return 0; +} + +void +ser_unix_nop_print_tty_state (struct serial *scb, + serial_ttystate ttystate, + struct ui_file *stream) +{ + /* Nothing to print. */ + return; +} + +int +ser_unix_nop_setbaudrate (struct serial *scb, int rate) +{ + return 0; /* Never fails! */ +} + +int +ser_unix_nop_setstopbits (struct serial *scb, int num) +{ + return 0; /* Never fails! */ +} + +/* Put the SERIAL device into/out-of ASYNC mode. */ + +void +ser_unix_async (struct serial *scb, + int async_p) +{ + if (async_p) + { + /* Force a re-schedule. */ + scb->async_state = NOTHING_SCHEDULED; + if (serial_debug_p (scb)) + fprintf_unfiltered (gdb_stdlog, "[fd%d->asynchronous]\n", + scb->fd); + reschedule (scb); + } + else + { + if (serial_debug_p (scb)) + fprintf_unfiltered (gdb_stdlog, "[fd%d->synchronous]\n", + scb->fd); + /* De-schedule whatever tasks are currently scheduled. */ + switch (scb->async_state) + { + case FD_SCHEDULED: + delete_file_handler (scb->fd); + break; + case NOTHING_SCHEDULED: + break; + default: /* TIMER SCHEDULED */ + delete_timer (scb->async_state); + break; + } + } +} diff --git a/gdb/ser-base.h b/gdb/ser-base.h new file mode 100644 index 0000000..bba4f65 --- /dev/null +++ b/gdb/ser-base.h @@ -0,0 +1,50 @@ +/* Generic serial interface functions. + + Copyright 2005 Free Software Foundation, Inc. + + 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. */ + +#ifndef SER_BASE_H +#define SER_BASE_H + +struct serial; +struct ui_file; + +extern void reschedule (struct serial *scb); +extern int ser_unix_nop_flush_output (struct serial *scb); +extern int ser_unix_flush_input (struct serial *scb); +extern int ser_unix_nop_send_break (struct serial *scb); +extern void ser_unix_nop_raw (struct serial *scb); +extern serial_ttystate ser_unix_nop_get_tty_state (struct serial *scb); +extern int ser_unix_nop_set_tty_state (struct serial *scb, + serial_ttystate ttystate); +extern void ser_unix_nop_print_tty_state (struct serial *scb, + serial_ttystate ttystate, + struct ui_file *stream); +extern int ser_unix_nop_noflush_set_tty_state (struct serial *scb, + serial_ttystate new_ttystate, + serial_ttystate old_ttystate); +extern int ser_unix_nop_setbaudrate (struct serial *scb, int rate); +extern int ser_unix_nop_setstopbits (struct serial *scb, int rate); +extern int ser_unix_nop_drain_output (struct serial *scb); + +extern int ser_unix_write (struct serial *scb, const char *str, int len); + +extern void ser_unix_async (struct serial *scb, int async_p); + +#endif diff --git a/gdb/ser-pipe.c b/gdb/ser-pipe.c index 3e04973..c5129c7 100644 --- a/gdb/ser-pipe.c +++ b/gdb/ser-pipe.c @@ -22,6 +22,7 @@ #include "defs.h" #include "serial.h" +#include "ser-base.h" #include "ser-unix.h" #include "gdb_vfork.h" diff --git a/gdb/ser-tcp.c b/gdb/ser-tcp.c index c2e4044..cb9ddd0 100644 --- a/gdb/ser-tcp.c +++ b/gdb/ser-tcp.c @@ -21,6 +21,7 @@ #include "defs.h" #include "serial.h" +#include "ser-base.h" #include "ser-unix.h" #include <sys/types.h> diff --git a/gdb/ser-unix.c b/gdb/ser-unix.c index bc91894..4f709de 100644 --- a/gdb/ser-unix.c +++ b/gdb/ser-unix.c @@ -1,7 +1,7 @@ /* Serial interface for local (hardwired) serial ports on Un*x like systems Copyright 1992, 1993, 1994, 1995, 1996, 1998, 1999, 2000, 2001, - 2003, 2004 Free Software Foundation, Inc. + 2003, 2004, 2005 Free Software Foundation, Inc. This file is part of GDB. @@ -22,6 +22,7 @@ #include "defs.h" #include "serial.h" +#include "ser-base.h" #include "ser-unix.h" #include <fcntl.h> @@ -31,7 +32,6 @@ #include <sys/time.h> #include "gdb_string.h" -#include "event-loop.h" #ifdef HAVE_TERMIOS @@ -92,11 +92,6 @@ static int hardwire_flush_input (struct serial *); static int hardwire_send_break (struct serial *); static int hardwire_setstopbits (struct serial *, int); -static int do_unix_readchar (struct serial *scb, int timeout); -static timer_handler_func push_event; -static handler_func fd_event; -static void reschedule (struct serial *scb); - void _initialize_ser_hardwire (void); /* Open up a real live device for serial I/O */ @@ -870,31 +865,10 @@ hardwire_close (struct serial *scb) } -/* Generic operations used by all UNIX/FD based serial interfaces. */ - -serial_ttystate -ser_unix_nop_get_tty_state (struct serial *scb) -{ - /* allocate a dummy */ - return (serial_ttystate) XMALLOC (int); -} - -int -ser_unix_nop_set_tty_state (struct serial *scb, serial_ttystate ttystate) -{ - return 0; -} - -void -ser_unix_nop_raw (struct serial *scb) -{ - return; /* Always in raw mode */ -} - /* Wait for input on scb, with timeout seconds. Returns 0 on success, otherwise SERIAL_TIMEOUT or SERIAL_ERROR. */ -int +static int ser_unix_wait_for (struct serial *scb, int timeout) { while (1) @@ -1074,267 +1048,7 @@ ser_unix_readchar (struct serial *scb, int timeout) { return generic_readchar (scb, timeout, do_unix_readchar); } - -int -ser_unix_nop_noflush_set_tty_state (struct serial *scb, - serial_ttystate new_ttystate, - serial_ttystate old_ttystate) -{ - return 0; -} - -void -ser_unix_nop_print_tty_state (struct serial *scb, - serial_ttystate ttystate, - struct ui_file *stream) -{ - /* Nothing to print. */ - return; -} - -int -ser_unix_nop_setbaudrate (struct serial *scb, int rate) -{ - return 0; /* Never fails! */ -} - -int -ser_unix_nop_setstopbits (struct serial *scb, int num) -{ - return 0; /* Never fails! */ -} - -int -ser_unix_write (struct serial *scb, const char *str, int len) -{ - int cc; - - while (len > 0) - { - cc = write (scb->fd, str, len); - - if (cc < 0) - return 1; - len -= cc; - str += cc; - } - return 0; -} - -int -ser_unix_nop_flush_output (struct serial *scb) -{ - return 0; -} - -int -ser_unix_flush_input (struct serial *scb) -{ - if (scb->bufcnt >= 0) - { - scb->bufcnt = 0; - scb->bufp = scb->buf; - return 0; - } - else - return SERIAL_ERROR; -} - -int -ser_unix_nop_send_break (struct serial *scb) -{ - return 0; -} - -int -ser_unix_nop_drain_output (struct serial *scb) -{ - return 0; -} - - -/* Event handling for ASYNC serial code. - - At any time the SERIAL device either: has an empty FIFO and is - waiting on a FD event; or has a non-empty FIFO/error condition and - is constantly scheduling timer events. - - ASYNC only stops pestering its client when it is de-async'ed or it - is told to go away. */ - -/* Value of scb->async_state: */ -enum { - /* >= 0 (TIMER_SCHEDULED) */ - /* The ID of the currently scheduled timer event. This state is - rarely encountered. Timer events are one-off so as soon as the - event is delivered the state is shanged to NOTHING_SCHEDULED. */ - FD_SCHEDULED = -1, - /* The fd_event() handler is scheduled. It is called when ever the - file descriptor becomes ready. */ - NOTHING_SCHEDULED = -2 - /* Either no task is scheduled (just going into ASYNC mode) or a - timer event has just gone off and the current state has been - forced into nothing scheduled. */ -}; - -/* Identify and schedule the next ASYNC task based on scb->async_state - and scb->buf* (the input FIFO). A state machine is used to avoid - the need to make redundant calls into the event-loop - the next - scheduled task is only changed when needed. */ - -static void -reschedule (struct serial *scb) -{ - if (serial_is_async_p (scb)) - { - int next_state; - switch (scb->async_state) - { - case FD_SCHEDULED: - if (scb->bufcnt == 0) - next_state = FD_SCHEDULED; - else - { - delete_file_handler (scb->fd); - next_state = create_timer (0, push_event, scb); - } - break; - case NOTHING_SCHEDULED: - if (scb->bufcnt == 0) - { - add_file_handler (scb->fd, fd_event, scb); - next_state = FD_SCHEDULED; - } - else - { - next_state = create_timer (0, push_event, scb); - } - break; - default: /* TIMER SCHEDULED */ - if (scb->bufcnt == 0) - { - delete_timer (scb->async_state); - add_file_handler (scb->fd, fd_event, scb); - next_state = FD_SCHEDULED; - } - else - next_state = scb->async_state; - break; - } - if (serial_debug_p (scb)) - { - switch (next_state) - { - case FD_SCHEDULED: - if (scb->async_state != FD_SCHEDULED) - fprintf_unfiltered (gdb_stdlog, "[fd%d->fd-scheduled]\n", - scb->fd); - break; - default: /* TIMER SCHEDULED */ - if (scb->async_state == FD_SCHEDULED) - fprintf_unfiltered (gdb_stdlog, "[fd%d->timer-scheduled]\n", - scb->fd); - break; - } - } - scb->async_state = next_state; - } -} - -/* FD_EVENT: This is scheduled when the input FIFO is empty (and there - is no pending error). As soon as data arrives, it is read into the - input FIFO and the client notified. The client should then drain - the FIFO using readchar(). If the FIFO isn't immediatly emptied, - push_event() is used to nag the client until it is. */ - -static void -fd_event (int error, void *context) -{ - struct serial *scb = context; - if (error != 0) - { - scb->bufcnt = SERIAL_ERROR; - } - else if (scb->bufcnt == 0) - { - /* Prime the input FIFO. The readchar() function is used to - pull characters out of the buffer. See also - generic_readchar(). */ - int nr; - do - { - nr = read (scb->fd, scb->buf, BUFSIZ); - } - while (nr == -1 && errno == EINTR); - if (nr == 0) - { - scb->bufcnt = SERIAL_EOF; - } - else if (nr > 0) - { - scb->bufcnt = nr; - scb->bufp = scb->buf; - } - else - { - scb->bufcnt = SERIAL_ERROR; - } - } - scb->async_handler (scb, scb->async_context); - reschedule (scb); -} - -/* PUSH_EVENT: The input FIFO is non-empty (or there is a pending - error). Nag the client until all the data has been read. In the - case of errors, the client will need to close or de-async the - device before naging stops. */ - -static void -push_event (void *context) -{ - struct serial *scb = context; - scb->async_state = NOTHING_SCHEDULED; /* Timers are one-off */ - scb->async_handler (scb, scb->async_context); - /* re-schedule */ - reschedule (scb); -} - -/* Put the SERIAL device into/out-of ASYNC mode. */ - -void -ser_unix_async (struct serial *scb, - int async_p) -{ - if (async_p) - { - /* Force a re-schedule. */ - scb->async_state = NOTHING_SCHEDULED; - if (serial_debug_p (scb)) - fprintf_unfiltered (gdb_stdlog, "[fd%d->asynchronous]\n", - scb->fd); - reschedule (scb); - } - else - { - if (serial_debug_p (scb)) - fprintf_unfiltered (gdb_stdlog, "[fd%d->synchronous]\n", - scb->fd); - /* De-schedule whatever tasks are currently scheduled. */ - switch (scb->async_state) - { - case FD_SCHEDULED: - delete_file_handler (scb->fd); - break; - case NOTHING_SCHEDULED: - break; - default: /* TIMER SCHEDULED */ - delete_timer (scb->async_state); - break; - } - } -} - void _initialize_ser_hardwire (void) { diff --git a/gdb/ser-unix.h b/gdb/ser-unix.h index 3bdf0bc..5ba01f9 100644 --- a/gdb/ser-unix.h +++ b/gdb/ser-unix.h @@ -22,33 +22,6 @@ #ifndef SER_UNIX_H #define SER_UNIX_H -struct serial; -struct ui_file; - -/* Generic UNIX/FD functions */ - -extern int ser_unix_nop_flush_output (struct serial *scb); -extern int ser_unix_flush_input (struct serial *scb); -extern int ser_unix_nop_send_break (struct serial *scb); -extern void ser_unix_nop_raw (struct serial *scb); -extern serial_ttystate ser_unix_nop_get_tty_state (struct serial *scb); -extern int ser_unix_nop_set_tty_state (struct serial *scb, - serial_ttystate ttystate); -extern void ser_unix_nop_print_tty_state (struct serial *scb, - serial_ttystate ttystate, - struct ui_file *stream); -extern int ser_unix_nop_noflush_set_tty_state (struct serial *scb, - serial_ttystate new_ttystate, - serial_ttystate old_ttystate); -extern int ser_unix_nop_setbaudrate (struct serial *scb, int rate); -extern int ser_unix_nop_setstopbits (struct serial *scb, int rate); -extern int ser_unix_nop_drain_output (struct serial *scb); - -extern int ser_unix_wait_for (struct serial *scb, int timeout); extern int ser_unix_readchar (struct serial *scb, int timeout); -extern int ser_unix_write (struct serial *scb, const char *str, int len); - -extern void ser_unix_async (struct serial *scb, int async_p); - #endif |