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

/* machine description file for clipper
   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 1, 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 clipper 1

/* Use type int rather than a union, to represent Lisp_Object */

#define NO_UNION_TYPE

/* crt0.c should define a symbol `start' and do .globl with a dot.  */

#define DOT_GLOBAL_START

/* 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 */

/* 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))

/* 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.  */

/* #define VIRT_ADDR_VARIES */  /* Karl Kleinpaste says this isn't needed.  */

/* 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

/* 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 */

#ifdef USG
#define TEXT_START 0
#endif /* USG */

#define LD_TEXT_START_ADDR 8000
Commit	Line	Data
20c428fd JB	1	/* machine description file for clipper
	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
	8	the Free Software Foundation; either version 1, or (at your option)
	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 clipper 1
	49
	50	/* Use type int rather than a union, to represent Lisp_Object */
	51
	52	#define NO_UNION_TYPE
	53
	54	/* crt0.c should define a symbol `start' and do .globl with a dot. */
	55
	56	#define DOT_GLOBAL_START
	57
	58	/* Define EXPLICIT_SIGN_EXTEND if XINT must explicitly sign-extend
	59	the 24-bit bit field into an int. In other words, if bit fields
	60	are always unsigned.
	61
	62	If you use NO_UNION_TYPE, this flag does not matter. */
	63
	64	/* #define EXPLICIT_SIGN_EXTEND */
	65
	66	/* USG systems I know of running on Vaxes do not actually
	67	support the load average, so disable it for them. */
	68
	69	/* Data type of load average, as read out of kmem. */
	70
	71	#define LOAD_AVE_TYPE double
	72
	73	/* Convert that into an integer that is 100 for a load average of 1.0 */
	74
	75	#define LOAD_AVE_CVT(x) ((int) ((x) * 100.0))
	76
	77	/* Define CANNOT_DUMP on machines where unexec does not work.
	78	Then the function dump-emacs will not be defined
	79	and temacs will do (load "loadup") automatically unless told otherwise. */
	80	/* #define CANNOT_DUMP */
	81
	82	/* Define VIRT_ADDR_VARIES if the virtual addresses of
	83	pure and impure space as loaded can vary, and even their
	84	relative order cannot be relied on.
	85
	86	Otherwise Emacs assumes that text space precedes data space,
	87	numerically. */
	88
	89	/* #define VIRT_ADDR_VARIES / / Karl Kleinpaste says this isn't needed. */
	90
	91	/* Define C_ALLOCA if this machine does not support a true alloca
	92	and the one written in C should be used instead.
	93	Define HAVE_ALLOCA to say that the system provides a properly
	94	working alloca function and it should be used.
	95	Define neither one if an assembler-language alloca
	96	in the file alloca.s should be used. */
	97
	98	#define C_ALLOCA
	99
	100	/* Define NO_REMAP if memory segmentation makes it not work well
	101	to change the boundary between the text section and data section
	102	when Emacs is dumped. If you define this, the preloaded Lisp
	103	code will not be sharable; but that's better than failing completely. */
	104
	105	/* #define NO_REMAP */
	106
	107	#ifdef USG
	108	#define TEXT_START 0
109	#endif /* USG */
110
111	#define LD_TEXT_START_ADDR 8000