[bpt/emacs.git] / src / m / vax.h

/* machine description file for vax.
   Copyright (C) 1985, 1986, 2002 Free Software Foundation, Inc.

This file is part of GNU Emacs.

GNU Emacs 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, or (at your option)
any later version.

GNU Emacs 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 GNU Emacs; see the file COPYING.  If not, write to
the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
Boston, MA 02111-1307, USA.  */


/* The following line tells the configuration script what sort of
   operating system this machine is likely to run.
   USUAL-OPSYS="note"

NOTE-START
The vax (-machine=vax) runs zillions of different operating systems.

Vax running Berkeley Unix (-opsystem=bsd4-1, -opsystem=bsd4-2 or
			   -opsystem=bsd4-3)

  Works.

Vax running Ultrix (-opsystem=bsd4-2)

  Works.  See under Ultrix in share-lib/MACHINES for problems using X
  windows on Ultrix.

Vax running System V rel 2 (-opsystem=usg5-2)

  18.27 Works.

Vax running System V rel 0 (-opsystem=usg5-0)

  Works as of 18.36.

Vax running VMS (-opsystem=vms)

  18.36 believed to work.  Addition of features is necessary to make
  this Emacs version more usable.

NOTE-END  */

/* Define WORDS_BIG_ENDIAN iff lowest-numbered byte in a word
   is the most significant byte.  */

#undef WORDS_BIG_ENDIAN

/* #define vax    -- appears to be done automatically  */

/* Use type int rather than a union, to represent Lisp_Object */

#define NO_UNION_TYPE

/* crt0.c should use the vax-bsd style of entry, with no dummy args.  */

#define CRT0_DUMMIES

/* crt0.c should define a symbol `start' and do .globl with a dot.  */

#define DOT_GLOBAL_START

#ifdef BSD_SYSTEM
/* USG systems I know of running on Vaxes do not actually
   support the load average, so disable it for them.  */

/* Data type of load average, as read out of kmem.  */

#define LOAD_AVE_TYPE double

/* Convert that into an integer that is 100 for a load average of 1.0  */

#define LOAD_AVE_CVT(x) ((int) ((x) * 100.0))

#endif /* BSD_SYSTEM */

#ifdef VMS

/* Data type of load average, as read out of driver.  */

#define LOAD_AVE_TYPE float

/* Convert that into an integer that is 100 for a load average of 1.0  */

#define LOAD_AVE_CVT(x) ((int) ((x) * 100.0))

#endif /* VMS */

/* Vax sysV has alloca in the PW library.  */

#ifdef USG
#define LIB_STANDARD -lPW -lc

/* There is some bug in unexec in for usg 5.2 on a vax
   which nobody who runs such a system has yet tracked down. */
#ifndef USG5_0
#define NO_REMAP
#endif /* USG 5_0 */

#define TEXT_START 0
#endif /* USG */

#ifdef BSD4_2
#define HAVE_FTIME
#endif

/* arch-tag: 508bdf7a-01a0-4ce0-8eba-0704d0df55a0
   (do not change this comment) */
Commit	Line	Data
20c428fd	1	/* machine description file for vax.
d8f6d720	2	Copyright (C) 1985, 1986, 2002 Free Software Foundation, Inc.
20c428fd JB	3
	4	This file is part of GNU Emacs.
	5
	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
17385adc	8	the Free Software Foundation; either version 2, or (at your option)
20c428fd JB	9	any later version.
	10
	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.
	15
	16	You should have received a copy of the GNU General Public License
	17	along with GNU Emacs; see the file COPYING. If not, write to
3b7ad313 EN	18	the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
3b7ad313 EN	19	Boston, MA 02111-1307, USA. */
20c428fd JB	20
20c428fd JB	21
177c0ea7	22	/* The following line tells the configuration script what sort of
20c428fd JB	23	operating system this machine is likely to run.
	24	USUAL-OPSYS="note"
	25
	26	NOTE-START
	27	The vax (-machine=vax) runs zillions of different operating systems.
	28
	29	Vax running Berkeley Unix (-opsystem=bsd4-1, -opsystem=bsd4-2 or
	30	-opsystem=bsd4-3)
	31
	32	Works.
	33
	34	Vax running Ultrix (-opsystem=bsd4-2)
	35
	36	Works. See under Ultrix in share-lib/MACHINES for problems using X
	37	windows on Ultrix.
	38
	39	Vax running System V rel 2 (-opsystem=usg5-2)
	40
	41	18.27 Works.
	42
	43	Vax running System V rel 0 (-opsystem=usg5-0)
	44
	45	Works as of 18.36.
	46
	47	Vax running VMS (-opsystem=vms)
	48
	49	18.36 believed to work. Addition of features is necessary to make
	50	this Emacs version more usable.
	51
	52	NOTE-END */
	53
74d3f806 KH	54	/* Define WORDS_BIG_ENDIAN iff lowest-numbered byte in a word
	55	is the most significant byte. */
	56
	57	#undef WORDS_BIG_ENDIAN
	58
20c428fd JB	59	/* #define vax -- appears to be done automatically */
	60
	61	/* Use type int rather than a union, to represent Lisp_Object */
	62
	63	#define NO_UNION_TYPE
	64
	65	/* crt0.c should use the vax-bsd style of entry, with no dummy args. */
	66
	67	#define CRT0_DUMMIES
	68
	69	/* crt0.c should define a symbol `start' and do .globl with a dot. */
	70
	71	#define DOT_GLOBAL_START
	72
6df54671	73	#ifdef BSD_SYSTEM
20c428fd JB	74	/* USG systems I know of running on Vaxes do not actually
	75	support the load average, so disable it for them. */
	76
	77	/* Data type of load average, as read out of kmem. */
	78
	79	#define LOAD_AVE_TYPE double
	80
	81	/* Convert that into an integer that is 100 for a load average of 1.0 */
	82
	83	#define LOAD_AVE_CVT(x) ((int) ((x) * 100.0))
	84
6df54671	85	#endif /* BSD_SYSTEM */
20c428fd JB	86
	87	#ifdef VMS
	88
	89	/* Data type of load average, as read out of driver. */
	90
	91	#define LOAD_AVE_TYPE float
	92
	93	/* Convert that into an integer that is 100 for a load average of 1.0 */
	94
	95	#define LOAD_AVE_CVT(x) ((int) ((x) * 100.0))
	96
	97	#endif /* VMS */
	98
	99	/* Vax sysV has alloca in the PW library. */
	100
	101	#ifdef USG
	102	#define LIB_STANDARD -lPW -lc
20c428fd JB	103
	104	/* There is some bug in unexec in for usg 5.2 on a vax
	105	which nobody who runs such a system has yet tracked down. */
	106	#ifndef USG5_0
	107	#define NO_REMAP
	108	#endif /* USG 5_0 */
	109
	110	#define TEXT_START 0
	111	#endif /* USG */
	112
cefeb3a9 RS	113	#ifdef BSD4_2
	114	#define HAVE_FTIME
	115	#endif
6b61353c KH	116
	117	/* arch-tag: 508bdf7a-01a0-4ce0-8eba-0704d0df55a0
	118	(do not change this comment) */