Don't convert function pointers to void * and back.
[emacs.git] / src / systty.h
blob6d38c9807258ddee795ecd2e8f3ca61c65f9384f
1 /* systty.h - System-dependent definitions for terminals.
2 Copyright (C) 1993-1994, 2001-2013 Free Software Foundation, Inc.
4 This file is part of GNU Emacs.
6 GNU Emacs 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 3 of the License, or
9 (at your option) any later version.
11 GNU Emacs 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 GNU Emacs. If not, see <http://www.gnu.org/licenses/>. */
19 /* Include the proper files. */
21 #ifndef DOS_NT
22 #include <termios.h>
23 #include <fcntl.h>
24 #endif /* not DOS_NT */
26 #include <sys/ioctl.h>
28 #ifdef HPUX
29 #include <sys/bsdtty.h>
30 #include <sys/ptyio.h>
31 #endif
33 #ifdef AIX
34 #include <sys/pty.h>
35 #endif /* AIX */
37 #include <unistd.h>
40 /* Try to establish the correct character to disable terminal functions
41 in a system-independent manner. Note that USG (at least) define
42 _POSIX_VDISABLE as 0! */
44 #ifdef _POSIX_VDISABLE
45 #define CDISABLE _POSIX_VDISABLE
46 #else /* not _POSIX_VDISABLE */
47 #ifdef CDEL
48 #undef CDISABLE
49 #define CDISABLE CDEL
50 #else /* not CDEL */
51 #define CDISABLE 255
52 #endif /* not CDEL */
53 #endif /* not _POSIX_VDISABLE */
55 /* Manipulate a TTY's input/output processing parameters. */
57 /* struct emacs_tty is a structure used to hold the current tty
58 parameters. If the terminal has several structures describing its
59 state, for example a struct tchars, a struct sgttyb, a struct
60 tchars, a struct ltchars, and a struct pagechars, struct
61 emacs_tty should contain an element for each parameter struct
62 that Emacs may change. */
65 /* For each tty parameter structure that Emacs might want to save and restore,
66 - include an element for it in this structure, and
67 - extend the emacs_{get,set}_tty functions in sysdep.c to deal with the
68 new members. */
70 struct emacs_tty {
72 /* There is always one of the following elements, so there is no need
73 for dummy get and set definitions. */
74 #ifndef DOS_NT
75 struct termios main;
76 #else /* DOS_NT */
77 int main;
78 #endif /* DOS_NT */
81 /* From sysdep.c or w32.c */
82 extern int serial_open (char *);
83 extern void serial_configure (struct Lisp_Process *, Lisp_Object);