[binutils.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 */

#ifdef __MSDOS__
#undef NEW_TTY_DRIVER
#undef HAVE_BSD_SIGNALS
#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

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

#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 (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 */

/*  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
	38	#define NEW_TTY_DRIVER
	39	#define HAVE_BSD_SIGNALS
	40	/* #define USE_XON_XOFF */
	41
	42	#ifdef __MSDOS__
	43	#undef NEW_TTY_DRIVER
	44	#undef HAVE_BSD_SIGNALS
	45	#endif
	46
	47	#if defined (__linux__)
	48	# include <termcap.h>
	49	#endif /* __linux__ */
	50
	51	/* Some USG machines have BSD signal handling (sigblock, sigsetmask, etc.) */
f550cec5 PB	52	/* CYGNUS LOCAL accept __hpux as well as hpux for HP compiler in ANSI mode. */
f550cec5 PB	53	#if defined (USG) && !(defined (hpux) \|\| defined (__hpux))
5e98bbab PB	54	# undef HAVE_BSD_SIGNALS
	55	#endif
	56
	57	/* System V machines use termio. */
	58	#if !defined (_POSIX_VERSION)
f550cec5 PB	59	/* CYGNUS LOCAL accept __hpux as well as hpux for HP compiler in ANSI mode. */
f550cec5 PB	60	# if defined (USG) \|\| defined (hpux) \|\| defined (__hpux) \|\| defined (Xenix) \|\| defined (sgi) \|\| defined (DGUX)
5e98bbab PB	61	# undef NEW_TTY_DRIVER
	62	# define TERMIO_TTY_DRIVER
	63	# include <termio.h>
	64	# if !defined (TCOON)
	65	# define TCOON 1
	66	# endif
	67	# endif /* USG \|\| hpux \|\| Xenix \|\| sgi \|\| DUGX */
	68	#endif /* !_POSIX_VERSION */
	69
	70	/* Posix systems use termios and the Posix signal functions. */
	71	#if defined (_POSIX_VERSION)
	72	# if !defined (TERMIOS_MISSING)
	73	# undef NEW_TTY_DRIVER
	74	# define TERMIOS_TTY_DRIVER
	75	# include <termios.h>
	76	# endif /* !TERMIOS_MISSING */
	77	# define HAVE_POSIX_SIGNALS
	78	# if !defined (O_NDELAY)
	79	# define O_NDELAY O_NONBLOCK /* Posix-style non-blocking i/o */
	80	# endif /* O_NDELAY */
	81	#endif /* _POSIX_VERSION */
	82
	83	/* System V.3 machines have the old 4.1 BSD `reliable' signal interface. */
	84	#if !defined (HAVE_BSD_SIGNALS) && !defined (HAVE_POSIX_SIGNALS)
	85	# if defined (USGr3)
	86	# if !defined (HAVE_USG_SIGHOLD)
	87	# define HAVE_USG_SIGHOLD
	88	# endif /* !HAVE_USG_SIGHOLD */
	89	# endif /* USGr3 */
	90	#endif /* !HAVE_BSD_SIGNALS && !HAVE_POSIX_SIGNALS */
	91
	92	/* Other (BSD) machines use sgtty. */
	93	#if defined (NEW_TTY_DRIVER)
	94	# include <sgtty.h>
	95	#endif
	96
	97	/* Define _POSIX_VDISABLE if we are not using the `new' tty driver and
	98	it is not already defined. It is used both to determine if a
	99	special character is disabled and to disable certain special
	100	characters. Posix systems should set to 0, USG systems to -1. */
	101	#if !defined (NEW_TTY_DRIVER) && !defined (_POSIX_VDISABLE)
	102	# if defined (_POSIX_VERSION)
	103	# define _POSIX_VDISABLE 0
	104	# else /* !_POSIX_VERSION */
	105	# define _POSIX_VDISABLE -1
	106	# endif /* !_POSIX_VERSION */
	107	#endif /* !NEW_TTY_DRIVER && !_POSIX_VDISABLE */
	108
	109	#if 1
	110	# define D_NAMLEN(d) strlen ((d)->d_name)
	111	#else /* !1 */
	112
	113	#if !defined (SHELL) && (defined (_POSIX_VERSION) \|\| defined (USGr3))
	114	# if !defined (HAVE_DIRENT_H)
	115	# define HAVE_DIRENT_H
	116	# endif /* !HAVE_DIRENT_H */
	117	#endif /* !SHELL && (_POSIX_VERSION \|\| USGr3) */
	118
	119	#if defined (HAVE_DIRENT_H)
	120	# include <dirent.h>
	121	# if !defined (direct)
	122	# define direct dirent
	123	# endif /* !direct */
	124	# define D_NAMLEN(d) strlen ((d)->d_name)
125	#else /* !HAVE_DIRENT_H */
126	# define D_NAMLEN(d) ((d)->d_namlen)
127	# if defined (USG)
128	# if defined (Xenix)
129	# include <sys/ndir.h>
130	# else /* !Xenix (but USG...) */
131	# include "ndir.h"
132	# endif /* !Xenix */
133	# else /* !USG */
134	# include <sys/dir.h>
135	# endif /* !USG */
136	#endif /* !HAVE_DIRENT_H */
137	#endif /* !1 */
138
139	#if defined (USG) && defined (TIOCGWINSZ) && !defined (Linux)
140	# include <sys/stream.h>
141	# if defined (HAVE_SYS_PTEM_H)
142	# include <sys/ptem.h>
143	# endif /* HAVE_SYS_PTEM_H */
144	# if defined (HAVE_SYS_PTE_H)
145	# include <sys/pte.h>
146	# endif /* HAVE_SYS_PTE_H */
147	#endif /* USG && TIOCGWINSZ && !Linux */
148
149	/* Posix macro to check file in statbuf for directory-ness.
150	This requires that <sys/stat.h> be included before this test. */
151	#if defined (S_IFDIR) && !defined (S_ISDIR)
152	#define S_ISDIR(m) (((m)&S_IFMT) == S_IFDIR)
153	#endif
154
5e98bbab PB	155	#if !defined (strchr) && !defined (__STDC__)
	156	extern char strchr (), strrchr ();
	157	#endif /* !strchr && !__STDC__ */
	158
	159	#if defined (HAVE_VARARGS_H)
	160	# include <varargs.h>
	161	#endif /* HAVE_VARARGS_H */
	162
	163	/* This definition is needed by readline.c, rltty.c, and signals.c. */
	164	/* If on, then readline handles signals in a way that doesn't screw. */
	165	#define HANDLE_SIGNALS
	166
	167	#if !defined (emacs_mode)
	168	# define no_mode -1
	169	# define vi_mode 0
	170	# define emacs_mode 1
	171	#endif
	172
	173	/* Define some macros for dealing with assorted signalling disciplines.
	174
	175	These macros provide a way to use signal blocking and disabling
	176	without smothering your code in a pile of #ifdef's.
	177
	178	SIGNALS_UNBLOCK; Stop blocking all signals.
	179
	180	{
	181	SIGNALS_DECLARE_SAVED (name); Declare a variable to save the
	182	signal blocking state.
	183	...
	184	SIGNALS_BLOCK (SIGSTOP, name); Block a signal, and save the previous
	185	state for restoration later.
	186	...
	187	SIGNALS_RESTORE (name); Restore previous signals.
	188	}
	189
	190	*/
	191
	192	#ifdef HAVE_POSIX_SIGNALS
	193	/* POSIX signals */
	194
	195	#define SIGNALS_UNBLOCK \
	196	do { sigset_t set; \
	197	sigemptyset (&set); \
	198	sigprocmask (SIG_SETMASK, &set, (sigset_t *)NULL); \
	199	} while (0)
	200
	201	#define SIGNALS_DECLARE_SAVED(name) sigset_t name
	202
	203	#define SIGNALS_BLOCK(SIG, saved) \
	204	do { sigset_t set; \
	205	sigemptyset (&set); \
	206	sigaddset (&set, SIG); \
	207	sigprocmask (SIG_BLOCK, &set, &saved); \
	208	} while (0)
	209
	210	#define SIGNALS_RESTORE(saved) \
	211	sigprocmask (SIG_SETMASK, &saved, (sigset_t *)NULL)
	212
	213
	214	#else /* HAVE_POSIX_SIGNALS */
	215	#ifdef HAVE_BSD_SIGNALS
	216	/* BSD signals */
	217
	218	#define SIGNALS_UNBLOCK sigsetmask (0)
219	#define SIGNALS_DECLARE_SAVED(name) int name
220	#define SIGNALS_BLOCK(SIG, saved) saved = sigblock (sigmask (SIG))
221	#define SIGNALS_RESTORE(saved) sigsetmask (saved)
222
223
224	#else /* HAVE_BSD_SIGNALS */
225	/* None of the Above */
226
227	#define SIGNALS_UNBLOCK /* nothing */
228	#define SIGNALS_DECLARE_SAVED(name) /* nothing */
229	#define SIGNALS_BLOCK(SIG, saved) /* nothing */
230	#define SIGNALS_RESTORE(saved) /* nothing */
231
232
233	#endif /* HAVE_BSD_SIGNALS */
234	#endif /* HAVE_POSIX_SIGNALS */
235
236	/* End of signal handling definitions. */
237	#endif /* !_RLDEFS_H */