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

/* machine description file for vax.
   Copyright (C) 1985, 1986 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, 675 Mass Ave, Cambridge, MA 02139, 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  */

/* The following three symbols give information on
 the size of various data types.  */

#define SHORTBITS 16		/* Number of bits in a short */

#define INTBITS 32		/* Number of bits in an int */

#define LONGBITS 32		/* Number of bits in a long */

/* Vax is not big-endian: lowest numbered byte is least significant. */

/* #undef 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
/* 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 */

#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 HAVE_ALLOCA

/* 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 BSD
#define HAVE_ALLOCA
#endif /* BSD */

#ifdef VMS
#define C_ALLOCA
#endif

#ifdef BSD4_2
#define HAVE_FTIME
#endif
Commit	Line	Data
20c428fd JB	1	/* machine description file for vax.
	2	Copyright (C) 1985, 1986 Free Software Foundation, Inc.
	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
	18	the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. */
	19
	20
	21	/* The following line tells the configuration script what sort of
	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
	53	/* The following three symbols give information on
	54	the size of various data types. */
	55
	56	#define SHORTBITS 16 /* Number of bits in a short */
	57
	58	#define INTBITS 32 /* Number of bits in an int */
	59
	60	#define LONGBITS 32 /* Number of bits in a long */
	61
	62	/* Vax is not big-endian: lowest numbered byte is least significant. */
	63
	64	/* #undef BIG_ENDIAN */
	65
20c428fd JB	66	/* #define vax -- appears to be done automatically */
	67
	68	/* Use type int rather than a union, to represent Lisp_Object */
	69
	70	#define NO_UNION_TYPE
	71
	72	/* crt0.c should use the vax-bsd style of entry, with no dummy args. */
	73
	74	#define CRT0_DUMMIES
	75
	76	/* crt0.c should define a symbol `start' and do .globl with a dot. */
	77
	78	#define DOT_GLOBAL_START
	79
	80	#ifdef BSD
	81	/* USG systems I know of running on Vaxes do not actually
	82	support the load average, so disable it for them. */
	83
	84	/* Data type of load average, as read out of kmem. */
	85
	86	#define LOAD_AVE_TYPE double
	87
	88	/* Convert that into an integer that is 100 for a load average of 1.0 */
	89
	90	#define LOAD_AVE_CVT(x) ((int) ((x) * 100.0))
	91
	92	#endif /* BSD */
	93
	94	#ifdef VMS
	95
	96	/* Data type of load average, as read out of driver. */
	97
	98	#define LOAD_AVE_TYPE float
	99
	100	/* Convert that into an integer that is 100 for a load average of 1.0 */
	101
	102	#define LOAD_AVE_CVT(x) ((int) ((x) * 100.0))
	103
	104	#endif /* VMS */
	105
	106	/* Vax sysV has alloca in the PW library. */
	107
	108	#ifdef USG
	109	#define LIB_STANDARD -lPW -lc
	110	#define HAVE_ALLOCA
	111
	112	/* There is some bug in unexec in for usg 5.2 on a vax
	113	which nobody who runs such a system has yet tracked down. */
	114	#ifndef USG5_0
	115	#define NO_REMAP
	116	#endif /* USG 5_0 */
	117
	118	#define TEXT_START 0
	119	#endif /* USG */
	120
	121	#ifdef BSD
	122	#define HAVE_ALLOCA
	123	#endif /* BSD */
	124
	125	#ifdef VMS
	126	#define C_ALLOCA
	127	#endif
cefeb3a9 RS	128
	129	#ifdef BSD4_2
	130	#define HAVE_FTIME
	131	#endif