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

/* machine description file for vax.
   Copyright (C) 1985, 1986, 2002, 2003, 2004,
                 2005, 2006 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., 51 Franklin Street, Fifth Floor,
Boston, MA 02110-1301, 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.
b908093d	2	Copyright (C) 1985, 1986, 2002, 2003, 2004,
aaef169d	3	2005, 2006 Free Software Foundation, Inc.
20c428fd JB	4
	5	This file is part of GNU Emacs.
	6
	7	GNU Emacs is free software; you can redistribute it and/or modify
	8	it under the terms of the GNU General Public License as published by
17385adc	9	the Free Software Foundation; either version 2, or (at your option)
20c428fd JB	10	any later version.
	11
	12	GNU Emacs is distributed in the hope that it will be useful,
	13	but WITHOUT ANY WARRANTY; without even the implied warranty of
	14	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	15	GNU General Public License for more details.
	16
	17	You should have received a copy of the GNU General Public License
	18	along with GNU Emacs; see the file COPYING. If not, write to
364c38d3 LK	19	the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
364c38d3 LK	20	Boston, MA 02110-1301, USA. */
20c428fd JB	21
20c428fd JB	22
177c0ea7	23	/* The following line tells the configuration script what sort of
20c428fd JB	24	operating system this machine is likely to run.
	25	USUAL-OPSYS="note"
	26
	27	NOTE-START
	28	The vax (-machine=vax) runs zillions of different operating systems.
	29
	30	Vax running Berkeley Unix (-opsystem=bsd4-1, -opsystem=bsd4-2 or
	31	-opsystem=bsd4-3)
	32
	33	Works.
	34
	35	Vax running Ultrix (-opsystem=bsd4-2)
	36
	37	Works. See under Ultrix in share-lib/MACHINES for problems using X
	38	windows on Ultrix.
	39
	40	Vax running System V rel 2 (-opsystem=usg5-2)
	41
	42	18.27 Works.
	43
	44	Vax running System V rel 0 (-opsystem=usg5-0)
	45
	46	Works as of 18.36.
	47
	48	Vax running VMS (-opsystem=vms)
	49
	50	18.36 believed to work. Addition of features is necessary to make
	51	this Emacs version more usable.
	52
	53	NOTE-END */
	54
74d3f806 KH	55	/* Define WORDS_BIG_ENDIAN iff lowest-numbered byte in a word
	56	is the most significant byte. */
	57
	58	#undef WORDS_BIG_ENDIAN
	59
20c428fd JB	60	/* #define vax -- appears to be done automatically */
	61
	62	/* Use type int rather than a union, to represent Lisp_Object */
	63
	64	#define NO_UNION_TYPE
	65
	66	/* crt0.c should use the vax-bsd style of entry, with no dummy args. */
	67
	68	#define CRT0_DUMMIES
	69
	70	/* crt0.c should define a symbol `start' and do .globl with a dot. */
	71
	72	#define DOT_GLOBAL_START
	73
6df54671	74	#ifdef BSD_SYSTEM
20c428fd JB	75	/* USG systems I know of running on Vaxes do not actually
	76	support the load average, so disable it for them. */
	77
	78	/* Data type of load average, as read out of kmem. */
	79
	80	#define LOAD_AVE_TYPE double
	81
	82	/* Convert that into an integer that is 100 for a load average of 1.0 */
	83
	84	#define LOAD_AVE_CVT(x) ((int) ((x) * 100.0))
	85
6df54671	86	#endif /* BSD_SYSTEM */
20c428fd JB	87
	88	#ifdef VMS
	89
	90	/* Data type of load average, as read out of driver. */
	91
	92	#define LOAD_AVE_TYPE float
	93
	94	/* Convert that into an integer that is 100 for a load average of 1.0 */
	95
	96	#define LOAD_AVE_CVT(x) ((int) ((x) * 100.0))
	97
	98	#endif /* VMS */
	99
	100	/* Vax sysV has alloca in the PW library. */
	101
	102	#ifdef USG
	103	#define LIB_STANDARD -lPW -lc
20c428fd JB	104
	105	/* There is some bug in unexec in for usg 5.2 on a vax
	106	which nobody who runs such a system has yet tracked down. */
	107	#ifndef USG5_0
	108	#define NO_REMAP
	109	#endif /* USG 5_0 */
	110
	111	#define TEXT_START 0
	112	#endif /* USG */
	113
cefeb3a9 RS	114	#ifdef BSD4_2
	115	#define HAVE_FTIME
	116	#endif
ab5796a9 MB	117
	118	/* arch-tag: 508bdf7a-01a0-4ce0-8eba-0704d0df55a0
	119	(do not change this comment) */