[deliverable/binutils-gdb.git] / readline / rldefs.h

/* rldefs.h -- an attempt to isolate some of the system-specific defines
   for readline.  This should be included after any files that define
   system-specific constants like _POSIX_VERSION or USG. */

/* Copyright (C) 1987,1989 Free Software Foundation, Inc.

   This file contains the Readline Library (the Library), a set of
   routines for providing Emacs style line input to programs that ask
   for it.

   The Library 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 1, or (at your option)
   any later version.

   The Library 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.

   The GNU General Public License is often shipped with GNU software, and
   is generally kept in a file called COPYING or LICENSE.  If you do not
   have a copy of the license, write to the Free Software Foundation,
   675 Mass Ave, Cambridge, MA 02139, USA. */

#if !defined (_RLDEFS_H)
#define _RLDEFS_H

#if defined (__GNUC__)
#  undef alloca
#  define alloca __builtin_alloca
#else
#  if defined (sparc) || defined (HAVE_ALLOCA_H)
#    include <alloca.h>
#  endif
#endif


#define NEW_TTY_DRIVER
#define HAVE_BSD_SIGNALS
/* #define USE_XON_XOFF */

#if defined(__MSDOS__) || defined(_WIN32)
#define NO_SYS_FILE
#define SIGALRM 1234
#undef NEW_TTY_DRIVER
#undef HAVE_BSD_SIGNALS
#define MINIMAL
#endif

#if defined (__linux__)
#  include <termcap.h>
#endif /* __linux__ */

/* Some USG machines have BSD signal handling (sigblock, sigsetmask, etc.) */
/* CYGNUS LOCAL accept __hpux as well as hpux for HP compiler in ANSI mode.  */
#if defined (USG) && !(defined (hpux) || defined (__hpux))
#  undef HAVE_BSD_SIGNALS
#endif

#define ScreenCols() 80
#define ScreenRows() 24
#define ScreenSetCursor() abort();
#define ScreenGetCursor() abort();

/* System V machines use termio. */
#if !defined (_POSIX_VERSION)
/* CYGNUS LOCAL accept __hpux as well as hpux for HP compiler in ANSI mode.
   Add __osf__ to list of machines to force use of termio.h */
#  if defined (USG) || defined (hpux) || defined (__hpux) || defined (Xenix) || defined (sgi) || defined (DGUX) || defined (__osf__)
#    undef NEW_TTY_DRIVER
#    define TERMIO_TTY_DRIVER
#    include <termio.h>
#    if !defined (TCOON)
#      define TCOON 1
#    endif
#  endif /* USG || hpux || Xenix || sgi || DUGX || __osf__ */
#endif /* !_POSIX_VERSION */

/* Posix systems use termios and the Posix signal functions. */
#if defined (_POSIX_VERSION)
#  if !defined (TERMIOS_MISSING)
#    undef NEW_TTY_DRIVER
#    define TERMIOS_TTY_DRIVER
#    include <termios.h>
#  endif /* !TERMIOS_MISSING */
#  define HAVE_POSIX_SIGNALS
#  if !defined (O_NDELAY)
#    define O_NDELAY O_NONBLOCK	/* Posix-style non-blocking i/o */
#  endif /* O_NDELAY */
#endif /* _POSIX_VERSION */

/* System V.3 machines have the old 4.1 BSD `reliable' signal interface. */
#if !defined (HAVE_BSD_SIGNALS) && !defined (HAVE_POSIX_SIGNALS)
#  if defined (USGr3)
#    if !defined (HAVE_USG_SIGHOLD)
#      define HAVE_USG_SIGHOLD
#    endif /* !HAVE_USG_SIGHOLD */
#  endif /* USGr3 */
#endif /* !HAVE_BSD_SIGNALS && !HAVE_POSIX_SIGNALS */

/* Other (BSD) machines use sgtty. */
#if defined (NEW_TTY_DRIVER)
#  include <sgtty.h>
#endif

/* Define _POSIX_VDISABLE if we are not using the `new' tty driver and
   it is not already defined.  It is used both to determine if a
   special character is disabled and to disable certain special
   characters.  Posix systems should set to 0, USG systems to -1. */
#if !defined (NEW_TTY_DRIVER) && !defined (_POSIX_VDISABLE)
#  if defined (_POSIX_VERSION)
#    define _POSIX_VDISABLE 0
#  else /* !_POSIX_VERSION */
#    define _POSIX_VDISABLE -1
#  endif /* !_POSIX_VERSION */
#endif /* !NEW_TTY_DRIVER && !_POSIX_VDISABLE */

#if 1
#  define D_NAMLEN(d) strlen ((d)->d_name)
#else /* !1 */

#if !defined (SHELL) && (defined (_POSIX_VERSION) || defined (USGr3))
#  if !defined (HAVE_DIRENT_H)
#    define HAVE_DIRENT_H
#  endif /* !HAVE_DIRENT_H */
#endif /* !SHELL && (_POSIX_VERSION || USGr3) */

#if defined (HAVE_DIRENT_H)
#  include <dirent.h>
#  if !defined (direct)
#    define direct dirent
#  endif /* !direct */
#  define D_NAMLEN(d) strlen ((d)->d_name)
#else /* !HAVE_DIRENT_H */
#  define D_NAMLEN(d) ((d)->d_namlen)
#  if defined (USG)
#    if defined (Xenix)
#      include <sys/ndir.h>
#    else /* !Xenix (but USG...) */
#      include "ndir.h"
#    endif /* !Xenix */
#  else /* !USG */
#    include <sys/dir.h>
#  endif /* !USG */
#endif /* !HAVE_DIRENT_H */
#endif /* !1 */

#if defined (USG) && defined (TIOCGWINSZ) && !defined (Linux)
#  if defined (_AIX)
	/* AIX 4.x seems to reference struct uio within a prototype
	   in stream.h, but doesn't cause the uio include file to
	   be included.  */
#    include <sys/uio.h>
#  endif
#  include <sys/stream.h>
#  if defined (HAVE_SYS_PTEM_H)
#    include <sys/ptem.h>
#  endif /* HAVE_SYS_PTEM_H */
#  if defined (HAVE_SYS_PTE_H)
#    include <sys/pte.h>
#  endif /* HAVE_SYS_PTE_H */
#endif /* USG && TIOCGWINSZ && !Linux */

/* Posix macro to check file in statbuf for directory-ness.
   This requires that <sys/stat.h> be included before this test. */
#if defined (S_IFDIR) && !defined (S_ISDIR)
#define S_ISDIR(m) (((m)&S_IFMT) == S_IFDIR)
#endif
/* Posix macro to check file in statbuf for file-ness.
   This requires that <sys/stat.h> be included before this test. */
#if defined (S_IFREG) && !defined (S_ISREG)
#define S_ISREG(m) (((m)&S_IFMT) == S_IFREG)
#endif

#if !defined (strchr) && !defined (__STDC__)
extern char *strchr (), *strrchr ();
#endif /* !strchr && !__STDC__ */

#if defined (HAVE_VARARGS_H)
#  include <varargs.h>
#endif /* HAVE_VARARGS_H */

/* This definition is needed by readline.c, rltty.c, and signals.c. */
/* If on, then readline handles signals in a way that doesn't screw. */
#define HANDLE_SIGNALS

#if defined(_WIN32) || defined(__MSDOS__)
#undef HANDLE_SIGNALS
#endif


#if !defined (emacs_mode)
#  define no_mode -1
#  define vi_mode 0
#  define emacs_mode 1
#endif

/* Define some macros for dealing with assorted signalling disciplines.

   These macros provide a way to use signal blocking and disabling
   without smothering your code in a pile of #ifdef's.

   SIGNALS_UNBLOCK;			Stop blocking all signals.

   {
     SIGNALS_DECLARE_SAVED (name);	Declare a variable to save the 
					signal blocking state.
	...
     SIGNALS_BLOCK (SIGSTOP, name);	Block a signal, and save the previous
					state for restoration later.
	...
     SIGNALS_RESTORE (name);		Restore previous signals.
   }

*/

#ifdef HAVE_POSIX_SIGNALS
							/* POSIX signals */

#define	SIGNALS_UNBLOCK \
      do { sigset_t set;	\
	sigemptyset (&set);	\
	sigprocmask (SIG_SETMASK, &set, (sigset_t *)NULL);	\
      } while (0)

#define	SIGNALS_DECLARE_SAVED(name)	sigset_t name

#define	SIGNALS_BLOCK(SIG, saved)	\
	do { sigset_t set;		\
	  sigemptyset (&set);		\
	  sigaddset (&set, SIG);	\
	  sigprocmask (SIG_BLOCK, &set, &saved);	\
	} while (0)

#define	SIGNALS_RESTORE(saved)		\
  sigprocmask (SIG_SETMASK, &saved, (sigset_t *)NULL)


#else	/* HAVE_POSIX_SIGNALS */
#ifdef HAVE_BSD_SIGNALS
							/* BSD signals */

#define	SIGNALS_UNBLOCK			sigsetmask (0)
#define	SIGNALS_DECLARE_SAVED(name)	int name
#define	SIGNALS_BLOCK(SIG, saved)	saved = sigblock (sigmask (SIG))
#define	SIGNALS_RESTORE(saved)		sigsetmask (saved)


#else  /* HAVE_BSD_SIGNALS */
							/* None of the Above */

#define	SIGNALS_UNBLOCK			/* nothing */
#define	SIGNALS_DECLARE_SAVED(name)	/* nothing */
#define	SIGNALS_BLOCK(SIG, saved)	/* nothing */
#define	SIGNALS_RESTORE(saved)		/* nothing */


#endif /* HAVE_BSD_SIGNALS */
#endif /* HAVE_POSIX_SIGNALS */

#if !defined (strchr)
extern char *strchr ();
#endif
#if !defined (strrchr)
extern char *strrchr ();
#endif
#ifdef __STDC__
#include <stddef.h>
extern size_t strlen (const char *s);
#endif  /* __STDC__ */

/*  End of signal handling definitions.  */
#endif /* !_RLDEFS_H */
Commit	Line	Data
5e98bbab PB	1	/* rldefs.h -- an attempt to isolate some of the system-specific defines
	2	for readline. This should be included after any files that define
	3	system-specific constants like _POSIX_VERSION or USG. */
	4
	5	/* Copyright (C) 1987,1989 Free Software Foundation, Inc.
	6
	7	This file contains the Readline Library (the Library), a set of
	8	routines for providing Emacs style line input to programs that ask
	9	for it.
	10
	11	The Library is free software; you can redistribute it and/or modify
	12	it under the terms of the GNU General Public License as published by
	13	the Free Software Foundation; either version 1, or (at your option)
	14	any later version.
	15
	16	The Library is distributed in the hope that it will be useful, but
	17	WITHOUT ANY WARRANTY; without even the implied warranty of
	18	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
	19	General Public License for more details.
	20
	21	The GNU General Public License is often shipped with GNU software, and
	22	is generally kept in a file called COPYING or LICENSE. If you do not
	23	have a copy of the license, write to the Free Software Foundation,
	24	675 Mass Ave, Cambridge, MA 02139, USA. */
	25
	26	#if !defined (_RLDEFS_H)
	27	#define _RLDEFS_H
	28
	29	#if defined (__GNUC__)
	30	# undef alloca
	31	# define alloca __builtin_alloca
	32	#else
	33	# if defined (sparc) \|\| defined (HAVE_ALLOCA_H)
	34	# include <alloca.h>
	35	# endif
	36	#endif
	37
9e9cf21f	38
5e98bbab PB	39	#define NEW_TTY_DRIVER
	40	#define HAVE_BSD_SIGNALS
	41	/* #define USE_XON_XOFF */
	42
46b6fdbd	43	#if defined(__MSDOS__) \|\| defined(_WIN32)
9e9cf21f MM	44	#define NO_SYS_FILE
9e9cf21f MM	45	#define SIGALRM 1234
5e98bbab PB	46	#undef NEW_TTY_DRIVER
5e98bbab PB	47	#undef HAVE_BSD_SIGNALS
9e9cf21f	48	#define MINIMAL
5e98bbab PB	49	#endif
	50
	51	#if defined (__linux__)
	52	# include <termcap.h>
	53	#endif /* __linux__ */
	54
	55	/* Some USG machines have BSD signal handling (sigblock, sigsetmask, etc.) */
f550cec5 PB	56	/* CYGNUS LOCAL accept __hpux as well as hpux for HP compiler in ANSI mode. */
f550cec5 PB	57	#if defined (USG) && !(defined (hpux) \|\| defined (__hpux))
5e98bbab PB	58	# undef HAVE_BSD_SIGNALS
	59	#endif
	60
46b6fdbd SG	61	#define ScreenCols() 80
	62	#define ScreenRows() 24
	63	#define ScreenSetCursor() abort();
	64	#define ScreenGetCursor() abort();
9e9cf21f	65
5e98bbab PB	66	/* System V machines use termio. */
5e98bbab PB	67	#if !defined (_POSIX_VERSION)
51da2b4a FF	68	/* CYGNUS LOCAL accept __hpux as well as hpux for HP compiler in ANSI mode.
	69	Add __osf__ to list of machines to force use of termio.h */
	70	# if defined (USG) \|\| defined (hpux) \|\| defined (__hpux) \|\| defined (Xenix) \|\| defined (sgi) \|\| defined (DGUX) \|\| defined (__osf__)
5e98bbab PB	71	# undef NEW_TTY_DRIVER
	72	# define TERMIO_TTY_DRIVER
	73	# include <termio.h>
	74	# if !defined (TCOON)
	75	# define TCOON 1
	76	# endif
51da2b4a	77	# endif /* USG \|\| hpux \|\| Xenix \|\| sgi \|\| DUGX \|\| __osf__ */
5e98bbab PB	78	#endif /* !_POSIX_VERSION */
	79
	80	/* Posix systems use termios and the Posix signal functions. */
	81	#if defined (_POSIX_VERSION)
	82	# if !defined (TERMIOS_MISSING)
	83	# undef NEW_TTY_DRIVER
	84	# define TERMIOS_TTY_DRIVER
	85	# include <termios.h>
	86	# endif /* !TERMIOS_MISSING */
	87	# define HAVE_POSIX_SIGNALS
	88	# if !defined (O_NDELAY)
	89	# define O_NDELAY O_NONBLOCK /* Posix-style non-blocking i/o */
	90	# endif /* O_NDELAY */
	91	#endif /* _POSIX_VERSION */
	92
	93	/* System V.3 machines have the old 4.1 BSD `reliable' signal interface. */
	94	#if !defined (HAVE_BSD_SIGNALS) && !defined (HAVE_POSIX_SIGNALS)
	95	# if defined (USGr3)
	96	# if !defined (HAVE_USG_SIGHOLD)
	97	# define HAVE_USG_SIGHOLD
	98	# endif /* !HAVE_USG_SIGHOLD */
	99	# endif /* USGr3 */
	100	#endif /* !HAVE_BSD_SIGNALS && !HAVE_POSIX_SIGNALS */
	101
	102	/* Other (BSD) machines use sgtty. */
	103	#if defined (NEW_TTY_DRIVER)
	104	# include <sgtty.h>
	105	#endif
	106
	107	/* Define _POSIX_VDISABLE if we are not using the `new' tty driver and
	108	it is not already defined. It is used both to determine if a
	109	special character is disabled and to disable certain special
	110	characters. Posix systems should set to 0, USG systems to -1. */
	111	#if !defined (NEW_TTY_DRIVER) && !defined (_POSIX_VDISABLE)
	112	# if defined (_POSIX_VERSION)
	113	# define _POSIX_VDISABLE 0
	114	# else /* !_POSIX_VERSION */
	115	# define _POSIX_VDISABLE -1
	116	# endif /* !_POSIX_VERSION */
	117	#endif /* !NEW_TTY_DRIVER && !_POSIX_VDISABLE */
	118
	119	#if 1
	120	# define D_NAMLEN(d) strlen ((d)->d_name)
	121	#else /* !1 */
	122
	123	#if !defined (SHELL) && (defined (_POSIX_VERSION) \|\| defined (USGr3))
	124	# if !defined (HAVE_DIRENT_H)
	125	# define HAVE_DIRENT_H
	126	# endif /* !HAVE_DIRENT_H */
	127	#endif /* !SHELL && (_POSIX_VERSION \|\| USGr3) */
	128
	129	#if defined (HAVE_DIRENT_H)
	130	# include <dirent.h>
	131	# if !defined (direct)
	132	# define direct dirent
	133	# endif /* !direct */
	134	# define D_NAMLEN(d) strlen ((d)->d_name)
	135	#else /* !HAVE_DIRENT_H */
	136	# define D_NAMLEN(d) ((d)->d_namlen)
	137	# if defined (USG)
	138	# if defined (Xenix)
	139	# include <sys/ndir.h>
	140	# else /* !Xenix (but USG...) */
	141	# include "ndir.h"
142	# endif /* !Xenix */
143	# else /* !USG */
144	# include <sys/dir.h>
145	# endif /* !USG */
146	#endif /* !HAVE_DIRENT_H */
147	#endif /* !1 */
148
149	#if defined (USG) && defined (TIOCGWINSZ) && !defined (Linux)
9e9cf21f MM	150	# if defined (_AIX)
	151	/* AIX 4.x seems to reference struct uio within a prototype
	152	in stream.h, but doesn't cause the uio include file to
	153	be included. */
	154	# include <sys/uio.h>
	155	# endif
5e98bbab PB	156	# include <sys/stream.h>
	157	# if defined (HAVE_SYS_PTEM_H)
	158	# include <sys/ptem.h>
	159	# endif /* HAVE_SYS_PTEM_H */
	160	# if defined (HAVE_SYS_PTE_H)
	161	# include <sys/pte.h>
	162	# endif /* HAVE_SYS_PTE_H */
	163	#endif /* USG && TIOCGWINSZ && !Linux */
	164
	165	/* Posix macro to check file in statbuf for directory-ness.
	166	This requires that <sys/stat.h> be included before this test. */
	167	#if defined (S_IFDIR) && !defined (S_ISDIR)
	168	#define S_ISDIR(m) (((m)&S_IFMT) == S_IFDIR)
	169	#endif
9e9cf21f MM	170	/* Posix macro to check file in statbuf for file-ness.
	171	This requires that <sys/stat.h> be included before this test. */
	172	#if defined (S_IFREG) && !defined (S_ISREG)
	173	#define S_ISREG(m) (((m)&S_IFMT) == S_IFREG)
	174	#endif
5e98bbab	175
5e98bbab PB	176	#if !defined (strchr) && !defined (__STDC__)
	177	extern char strchr (), strrchr ();
	178	#endif /* !strchr && !__STDC__ */
	179
	180	#if defined (HAVE_VARARGS_H)
	181	# include <varargs.h>
	182	#endif /* HAVE_VARARGS_H */
	183
	184	/* This definition is needed by readline.c, rltty.c, and signals.c. */
	185	/* If on, then readline handles signals in a way that doesn't screw. */
	186	#define HANDLE_SIGNALS
	187
46b6fdbd	188	#if defined(_WIN32) \|\| defined(__MSDOS__)
9e9cf21f MM	189	#undef HANDLE_SIGNALS
	190	#endif
	191
	192
5e98bbab PB	193	#if !defined (emacs_mode)
	194	# define no_mode -1
	195	# define vi_mode 0
	196	# define emacs_mode 1
	197	#endif
	198
	199	/* Define some macros for dealing with assorted signalling disciplines.
	200
	201	These macros provide a way to use signal blocking and disabling
	202	without smothering your code in a pile of #ifdef's.
	203
	204	SIGNALS_UNBLOCK; Stop blocking all signals.
	205
	206	{
	207	SIGNALS_DECLARE_SAVED (name); Declare a variable to save the
	208	signal blocking state.
	209	...
	210	SIGNALS_BLOCK (SIGSTOP, name); Block a signal, and save the previous
	211	state for restoration later.
	212	...
	213	SIGNALS_RESTORE (name); Restore previous signals.
	214	}
	215
	216	*/
	217
	218	#ifdef HAVE_POSIX_SIGNALS
	219	/* POSIX signals */
	220
	221	#define SIGNALS_UNBLOCK \
	222	do { sigset_t set; \
	223	sigemptyset (&set); \
	224	sigprocmask (SIG_SETMASK, &set, (sigset_t *)NULL); \
	225	} while (0)
	226
	227	#define SIGNALS_DECLARE_SAVED(name) sigset_t name
	228
	229	#define SIGNALS_BLOCK(SIG, saved) \
	230	do { sigset_t set; \
	231	sigemptyset (&set); \
	232	sigaddset (&set, SIG); \
	233	sigprocmask (SIG_BLOCK, &set, &saved); \
	234	} while (0)
	235
	236	#define SIGNALS_RESTORE(saved) \
	237	sigprocmask (SIG_SETMASK, &saved, (sigset_t *)NULL)
	238
	239
	240	#else /* HAVE_POSIX_SIGNALS */
	241	#ifdef HAVE_BSD_SIGNALS
	242	/* BSD signals */
	243
	244	#define SIGNALS_UNBLOCK sigsetmask (0)
	245	#define SIGNALS_DECLARE_SAVED(name) int name
	246	#define SIGNALS_BLOCK(SIG, saved) saved = sigblock (sigmask (SIG))
	247	#define SIGNALS_RESTORE(saved) sigsetmask (saved)
	248
	249
	250	#else /* HAVE_BSD_SIGNALS */
	251	/* None of the Above */
	252
	253	#define SIGNALS_UNBLOCK /* nothing */
	254	#define SIGNALS_DECLARE_SAVED(name) /* nothing */
	255	#define SIGNALS_BLOCK(SIG, saved) /* nothing */
	256	#define SIGNALS_RESTORE(saved) /* nothing */
257
258
259	#endif /* HAVE_BSD_SIGNALS */
260	#endif /* HAVE_POSIX_SIGNALS */
261
9e9cf21f MM	262	#if !defined (strchr)
	263	extern char *strchr ();
	264	#endif
	265	#if !defined (strrchr)
	266	extern char *strrchr ();
	267	#endif
	268	#ifdef __STDC__
	269	#include <stddef.h>
	270	extern size_t strlen (const char *s);
	271	#endif /* __STDC__ */
	272
5e98bbab PB	273	/* End of signal handling definitions. */
5e98bbab PB	274	#endif /* !_RLDEFS_H */