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

/* Machine description file for Windows NT.

   Copyright (C) 1993, 1994 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="<name of system .h file here, without the s- or .h>"  */

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

/* #define BIG_ENDIAN */

/* Define NO_ARG_ARRAY if you cannot take the address of the first of a
 * group of arguments and treat it as an array of the arguments.  */

#define NO_ARG_ARRAY

/* Define WORD_MACHINE if addresses and such have
 * to be corrected before they can be used as byte counts.  */

#define WORD_MACHINE

/* Now define a symbol for the cpu type, if your compiler
   does not define it automatically:
   Ones defined so far include vax, m68000, ns16000, pyramid,
   orion, tahoe, APOLLO and many others */

/* Use type int rather than a union, to represent Lisp_Object */
/* This is desirable for most machines.  */

#define NO_UNION_TYPE

/* Define EXPLICIT_SIGN_EXTEND if XINT must explicitly sign-extend
   the 24-bit bit field into an int.  In other words, if bit fields
   are always unsigned.

   If you use NO_UNION_TYPE, this flag does not matter.  */

#define EXPLICIT_SIGN_EXTEND

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

#define LOAD_AVE_TYPE long

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

#define LOAD_AVE_CVT(x) (int) (((double) (x)) * 100.0 / FSCALE)

/* Define CANNOT_DUMP on machines where unexec does not work.
   Then the function dump-emacs will not be defined
   and temacs will do (load "loadup") automatically unless told otherwise.  */

/*
#define CANNOT_DUMP	1
#define	CANNOT_UNEXEC	1
 */

/* Start and end of text and data.  */
#define DATA_END 	get_data_end ()
#define DATA_START 	get_data_start ()

/* Define VIRT_ADDR_VARIES if the virtual addresses of
   pure and impure space as loaded can vary, and even their
   relative order cannot be relied on.

   Otherwise Emacs assumes that text space precedes data space,
   numerically.  */

/* Text does precede data space, but this is never a safe assumption.  */
#define VIRT_ADDR_VARIES

/* Define C_ALLOCA if this machine does not support a true alloca
   and the one written in C should be used instead.
   Define HAVE_ALLOCA to say that the system provides a properly
   working alloca function and it should be used.
   Define neither one if an assembler-language alloca
   in the file alloca.s should be used.  */

/* #define C_ALLOCA */
#include <malloc.h>
#define HAVE_ALLOCA

/* Define NO_REMAP if memory segmentation makes it not work well
   to change the boundary between the text section and data section
   when Emacs is dumped.  If you define this, the preloaded Lisp
   code will not be sharable; but that's better than failing completely.  */

/* #define NO_REMAP */

/* Some really obscure 4.2-based systems (like Sequent DYNIX)
 * do not support asynchronous I/O (using SIGIO) on sockets,
 * even though it works fine on tty's.  If you have one of
 * these systems, define the following, and then use it in
 * config.h (or elsewhere) to decide when (not) to use SIGIO.
 *
 * You'd think this would go in an operating-system description file,
 * but since it only occurs on some, but not all, BSD systems, the
 * reasonable place to select for it is in the machine description
 * file.
 */

/* #define NO_SOCK_SIGIO */

/* After adding support for a new system, modify the large case
   statement in the `configure' script to recognize reasonable
   configuration names, and add a description of the system to
   `etc/MACHINES'.

   If you've just fixed a problem in an existing configuration file,
   you should also check `etc/MACHINES' to make sure its descriptions
   of known problems in that configuration should be updated.  */
Commit	Line	Data
e9e32568 KH	1	/* Machine description file for Windows NT.
	2
	3	Copyright (C) 1993, 1994 Free Software Foundation, Inc.
	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
	9	the Free Software Foundation; either version 2, or (at your option)
	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
3b7ad313 EN	19	the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
3b7ad313 EN	20	Boston, MA 02111-1307, USA. */
e9e32568 KH	21
	22	/* The following line tells the configuration script what sort of
	23	operating system this machine is likely to run.
	24	USUAL-OPSYS="<name of system .h file here, without the s- or .h>" */
	25
e9e32568 KH	26	/* Define BIG_ENDIAN iff lowest-numbered byte in a word
	27	is the most significant byte. */
	28
	29	/* #define BIG_ENDIAN */
	30
	31	/* Define NO_ARG_ARRAY if you cannot take the address of the first of a
	32	* group of arguments and treat it as an array of the arguments. */
	33
	34	#define NO_ARG_ARRAY
	35
	36	/* Define WORD_MACHINE if addresses and such have
	37	* to be corrected before they can be used as byte counts. */
	38
	39	#define WORD_MACHINE
	40
	41	/* Now define a symbol for the cpu type, if your compiler
	42	does not define it automatically:
	43	Ones defined so far include vax, m68000, ns16000, pyramid,
	44	orion, tahoe, APOLLO and many others */
	45
	46	/* Use type int rather than a union, to represent Lisp_Object */
	47	/* This is desirable for most machines. */
	48
	49	#define NO_UNION_TYPE
	50
	51	/* Define EXPLICIT_SIGN_EXTEND if XINT must explicitly sign-extend
	52	the 24-bit bit field into an int. In other words, if bit fields
	53	are always unsigned.
	54
	55	If you use NO_UNION_TYPE, this flag does not matter. */
	56
	57	#define EXPLICIT_SIGN_EXTEND
	58
	59	/* Data type of load average, as read out of kmem. */
	60
	61	#define LOAD_AVE_TYPE long
	62
	63	/* Convert that into an integer that is 100 for a load average of 1.0 */
	64
	65	#define LOAD_AVE_CVT(x) (int) (((double) (x)) * 100.0 / FSCALE)
	66
	67	/* Define CANNOT_DUMP on machines where unexec does not work.
	68	Then the function dump-emacs will not be defined
	69	and temacs will do (load "loadup") automatically unless told otherwise. */
	70
	71	/*
	72	#define CANNOT_DUMP 1
	73	#define CANNOT_UNEXEC 1
	74	*/
	75
	76	/* Start and end of text and data. */
	77	#define DATA_END get_data_end ()
	78	#define DATA_START get_data_start ()
	79
	80	/* Define VIRT_ADDR_VARIES if the virtual addresses of
	81	pure and impure space as loaded can vary, and even their
	82	relative order cannot be relied on.
	83
	84	Otherwise Emacs assumes that text space precedes data space,
	85	numerically. */
	86
8e6208c5	87	/* Text does precede data space, but this is never a safe assumption. */
e9e32568 KH	88	#define VIRT_ADDR_VARIES
	89
	90	/* Define C_ALLOCA if this machine does not support a true alloca
	91	and the one written in C should be used instead.
	92	Define HAVE_ALLOCA to say that the system provides a properly
	93	working alloca function and it should be used.
	94	Define neither one if an assembler-language alloca
	95	in the file alloca.s should be used. */
	96
	97	/* #define C_ALLOCA */
	98	#include <malloc.h>
	99	#define HAVE_ALLOCA
	100
	101	/* Define NO_REMAP if memory segmentation makes it not work well
	102	to change the boundary between the text section and data section
	103	when Emacs is dumped. If you define this, the preloaded Lisp
	104	code will not be sharable; but that's better than failing completely. */
	105
	106	/* #define NO_REMAP */
	107
	108	/* Some really obscure 4.2-based systems (like Sequent DYNIX)
	109	* do not support asynchronous I/O (using SIGIO) on sockets,
	110	* even though it works fine on tty's. If you have one of
	111	* these systems, define the following, and then use it in
	112	* config.h (or elsewhere) to decide when (not) to use SIGIO.
	113	*
	114	* You'd think this would go in an operating-system description file,
	115	* but since it only occurs on some, but not all, BSD systems, the
	116	* reasonable place to select for it is in the machine description
	117	* file.
	118	*/
	119
	120	/* #define NO_SOCK_SIGIO */
	121
	122	/* After adding support for a new system, modify the large case
	123	statement in the `configure' script to recognize reasonable
	124	configuration names, and add a description of the system to
	125	`etc/MACHINES'.
	126
	127	If you've just fixed a problem in an existing configuration file,
	128	you should also check `etc/MACHINES' to make sure its descriptions
	129	of known problems in that configuration should be updated. */