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

/* machine description file for convergent S series.
   Copyright (C) 1989 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.  */


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

#define WORDS_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.  */

#define m68000

/* 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.
   These are commented out since it is not supported by this machine.  */

#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))

/* 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 */

/* 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.  */

#undef 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
#undef 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
\f
/* Change some things to avoid bugs in compiler.  */

#define SWITCH_ENUM_BUG

/* fork(2) and vfork() are the same here.  */

#define HAVE_VFORK

/* grows towards lower addresses.  */

#define	STACK_DIRECTION	-1

/* some errno.h's don't actually allocate the variable itself.
   Cause crt0.c to define errno.  */

#define NEED_ERRNO
Commit	Line	Data
20c428fd JB	1	/* machine description file for convergent S series.
	2	Copyright (C) 1989 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
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
74d3f806 KH	22	/* Define WORDS_BIG_ENDIAN iff lowest-numbered byte in a word
	23	is the most significant byte. */
	24
	25	#define WORDS_BIG_ENDIAN
	26
20c428fd JB	27	/* Define NO_ARG_ARRAY if you cannot take the address of the first of a
	28	* group of arguments and treat it as an array of the arguments. */
	29
	30	/* #define NO_ARG_ARRAY */
	31
	32	/* Define WORD_MACHINE if addresses and such have
	33	* to be corrected before they can be used as byte counts. */
	34
	35	/* #define WORD_MACHINE */
	36
20c428fd JB	37	/* Now define a symbol for the cpu type, if your compiler
	38	does not define it automatically. */
	39
	40	#define m68000
	41
	42	/* Use type int rather than a union, to represent Lisp_Object.
	43	This is desirable for most machines. */
	44
	45	#define NO_UNION_TYPE
	46
	47	/* Define EXPLICIT_SIGN_EXTEND if XINT must explicitly sign-extend
	48	the 24-bit bit field into an int. In other words, if bit fields
	49	are always unsigned.
	50
	51	If you use NO_UNION_TYPE, this flag does not matter. */
	52
	53	#define EXPLICIT_SIGN_EXTEND
	54
	55	/* Data type of load average, as read out of kmem.
	56	These are commented out since it is not supported by this machine. */
	57
	58	#define LOAD_AVE_TYPE double
	59
	60	/* Convert that into an integer that is 100 for a load average of 1.0 */
	61
	62	#define LOAD_AVE_CVT(x) ((int) ((x) * 100.0))
	63
	64	/* Define CANNOT_DUMP on machines where unexec does not work.
	65	Then the function dump-emacs will not be defined
	66	and temacs will do (load "loadup") automatically unless told otherwise. */
	67
	68	/* #define CANNOT_DUMP */
	69
	70	/* Define VIRT_ADDR_VARIES if the virtual addresses of
	71	pure and impure space as loaded can vary, and even their
	72	relative order cannot be relied on.
	73
	74	Otherwise Emacs assumes that text space precedes data space,
	75	numerically. */
	76
	77	#undef VIRT_ADDR_VARIES
	78
	79	/* Define C_ALLOCA if this machine does not support a true alloca
	80	and the one written in C should be used instead.
	81	Define HAVE_ALLOCA to say that the system provides a properly
	82	working alloca function and it should be used.
	83	Define neither one if an assembler-language alloca
	84	in the file alloca.s should be used. */
	85
	86	#define C_ALLOCA
	87	#undef HAVE_ALLOCA
	88
	89	/* Define NO_REMAP if memory segmentation makes it not work well
	90	to change the boundary between the text section and data section
	91	when Emacs is dumped. If you define this, the preloaded Lisp
	92	code will not be sharable; but that's better than failing completely. */
	93
	94	#define NO_REMAP
	95	\f
	96	/* Change some things to avoid bugs in compiler. */
	97
	98	#define SWITCH_ENUM_BUG
	99
	100	/* fork(2) and vfork() are the same here. */
101
102	#define HAVE_VFORK
103
104	/* grows towards lower addresses. */
105
106	#define STACK_DIRECTION -1
107
108	/* some errno.h's don't actually allocate the variable itself.
109	Cause crt0.c to define errno. */
110
111	#define NEED_ERRNO