[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, 675 Mass Ave, Cambridge, MA 02139, USA.  */


/* 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 */

/* 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.  */

#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
	18	the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. */
	19
	20
	21	/* The following three symbols give information on
	22	the size of various data types. */
	23
	24	#define SHORTBITS 16 /* Number of bits in a short */
	25
	26	#define INTBITS 32 /* Number of bits in an int */
	27
	28	#define LONGBITS 32 /* Number of bits in a long */
	29
	30	/* Define BIG_ENDIAN iff lowest-numbered byte in a word
	31	is the most significant byte. */
	32
	33	#define BIG_ENDIAN
	34
	35	/* Define NO_ARG_ARRAY if you cannot take the address of the first of a
	36	* group of arguments and treat it as an array of the arguments. */
	37
	38	/* #define NO_ARG_ARRAY */
	39
	40	/* Define WORD_MACHINE if addresses and such have
	41	* to be corrected before they can be used as byte counts. */
	42
	43	/* #define WORD_MACHINE */
	44
20c428fd JB	45	/* Now define a symbol for the cpu type, if your compiler
	46	does not define it automatically. */
	47
	48	#define m68000
	49
	50	/* Use type int rather than a union, to represent Lisp_Object.
	51	This is desirable for most machines. */
	52
	53	#define NO_UNION_TYPE
	54
	55	/* Define EXPLICIT_SIGN_EXTEND if XINT must explicitly sign-extend
	56	the 24-bit bit field into an int. In other words, if bit fields
	57	are always unsigned.
	58
	59	If you use NO_UNION_TYPE, this flag does not matter. */
	60
	61	#define EXPLICIT_SIGN_EXTEND
	62
	63	/* Data type of load average, as read out of kmem.
	64	These are commented out since it is not supported by this machine. */
	65
	66	#define LOAD_AVE_TYPE double
	67
	68	/* Convert that into an integer that is 100 for a load average of 1.0 */
	69
	70	#define LOAD_AVE_CVT(x) ((int) ((x) * 100.0))
	71
	72	/* Define CANNOT_DUMP on machines where unexec does not work.
	73	Then the function dump-emacs will not be defined
	74	and temacs will do (load "loadup") automatically unless told otherwise. */
	75
	76	/* #define CANNOT_DUMP */
	77
	78	/* Define VIRT_ADDR_VARIES if the virtual addresses of
	79	pure and impure space as loaded can vary, and even their
	80	relative order cannot be relied on.
	81
	82	Otherwise Emacs assumes that text space precedes data space,
	83	numerically. */
	84
	85	#undef VIRT_ADDR_VARIES
	86
	87	/* Define C_ALLOCA if this machine does not support a true alloca
	88	and the one written in C should be used instead.
	89	Define HAVE_ALLOCA to say that the system provides a properly
	90	working alloca function and it should be used.
	91	Define neither one if an assembler-language alloca
	92	in the file alloca.s should be used. */
	93
	94	#define C_ALLOCA
	95	#undef HAVE_ALLOCA
	96
	97	/* Define NO_REMAP if memory segmentation makes it not work well
	98	to change the boundary between the text section and data section
	99	when Emacs is dumped. If you define this, the preloaded Lisp
	100	code will not be sharable; but that's better than failing completely. */
	101
	102	#define NO_REMAP
	103	\f
	104	/* Change some things to avoid bugs in compiler. */
	105
	106	#define SWITCH_ENUM_BUG
	107
	108	/* fork(2) and vfork() are the same here. */
109
110	#define HAVE_VFORK
111
112	/* grows towards lower addresses. */
113
114	#define STACK_DIRECTION -1
115
116	/* some errno.h's don't actually allocate the variable itself.
117	Cause crt0.c to define errno. */
118
119	#define NEED_ERRNO