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

/* machine description file for vax.
   Copyright (C) 1985, 1986, 2001, 2002, 2003, 2004, 2005, 2006, 2007,
                 2008  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 3 of the License, 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.  If not, see <http://www.gnu.org/licenses/>.  */


/* 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 if 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

#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.
eb3d11ef GM	2	Copyright (C) 1985, 1986, 2001, 2002, 2003, 2004, 2005, 2006, 2007,
eb3d11ef GM	3	2008 Free Software Foundation, Inc.
20c428fd JB	4
	5	This file is part of GNU Emacs.
	6
eb3d11ef	7	GNU Emacs is free software: you can redistribute it and/or modify
20c428fd	8	it under the terms of the GNU General Public License as published by
eb3d11ef GM	9	the Free Software Foundation, either version 3 of the License, or
eb3d11ef GM	10	(at your option) any later version.
20c428fd JB	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
eb3d11ef	18	along with GNU Emacs. If not, see <http://www.gnu.org/licenses/>. */
20c428fd JB	19
20c428fd JB	20
177c0ea7	21	/* The following line tells the configuration script what sort of
20c428fd JB	22	operating system this machine is likely to run.
	23	USUAL-OPSYS="note"
	24
	25	NOTE-START
	26	The vax (-machine=vax) runs zillions of different operating systems.
	27
	28	Vax running Berkeley Unix (-opsystem=bsd4-1, -opsystem=bsd4-2 or
	29	-opsystem=bsd4-3)
	30
	31	Works.
	32
	33	Vax running Ultrix (-opsystem=bsd4-2)
	34
	35	Works. See under Ultrix in share-lib/MACHINES for problems using X
	36	windows on Ultrix.
	37
	38	Vax running System V rel 2 (-opsystem=usg5-2)
	39
	40	18.27 Works.
	41
	42	Vax running System V rel 0 (-opsystem=usg5-0)
	43
	44	Works as of 18.36.
	45
	46	Vax running VMS (-opsystem=vms)
	47
	48	18.36 believed to work. Addition of features is necessary to make
	49	this Emacs version more usable.
	50
	51	NOTE-END */
	52
22e9fe24	53	/* Define WORDS_BIG_ENDIAN if lowest-numbered byte in a word
74d3f806 KH	54	is the most significant byte. */
	55
	56	#undef WORDS_BIG_ENDIAN
	57
20c428fd JB	58	/* #define vax -- appears to be done automatically */
	59
	60	/* Use type int rather than a union, to represent Lisp_Object */
	61
	62	#define NO_UNION_TYPE
	63
	64	/* crt0.c should use the vax-bsd style of entry, with no dummy args. */
	65
	66	#define CRT0_DUMMIES
	67
	68	/* crt0.c should define a symbol `start' and do .globl with a dot. */
	69
	70	#define DOT_GLOBAL_START
	71
6df54671	72	#ifdef BSD_SYSTEM
20c428fd JB	73	/* USG systems I know of running on Vaxes do not actually
	74	support the load average, so disable it for them. */
	75
	76	/* Data type of load average, as read out of kmem. */
	77
	78	#define LOAD_AVE_TYPE double
	79
	80	/* Convert that into an integer that is 100 for a load average of 1.0 */
	81
	82	#define LOAD_AVE_CVT(x) ((int) ((x) * 100.0))
	83
6df54671	84	#endif /* BSD_SYSTEM */
20c428fd JB	85
	86	#ifdef VMS
	87
	88	/* Data type of load average, as read out of driver. */
	89
	90	#define LOAD_AVE_TYPE float
	91
	92	/* Convert that into an integer that is 100 for a load average of 1.0 */
	93
	94	#define LOAD_AVE_CVT(x) ((int) ((x) * 100.0))
	95
	96	#endif /* VMS */
	97
	98	/* Vax sysV has alloca in the PW library. */
	99
	100	#ifdef USG
	101	#define LIB_STANDARD -lPW -lc
20c428fd	102
20c428fd JB	103	#define TEXT_START 0
	104	#endif /* USG */
	105
cefeb3a9 RS	106	#ifdef BSD4_2
	107	#define HAVE_FTIME
	108	#endif
ab5796a9 MB	109
	110	/* arch-tag: 508bdf7a-01a0-4ce0-8eba-0704d0df55a0
	111	(do not change this comment) */