[bpt/emacs.git] / src / m / m68k.h

/* Machine description file for generic Motorola 68k.
   Copyright (C) 1985, 1995, 2002 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 three symbols give information on
 the size of various data types.  */


/* 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.  */

#ifndef m68k
#define m68k
#endif

/* 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

/* 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 */

#ifdef linux
#ifdef __ELF__
#define DATA_SEG_BITS 0x80000000
#endif

#define NO_REMAP
#define TEXT_START 0
#endif

/* arch-tag: 4eadd161-b4e8-4b82-82a1-e4ce7f42969d
   (do not change this comment) */
Commit	Line	Data
0dc7e4aa	1	/* Machine description file for generic Motorola 68k.
d8f6d720	2	Copyright (C) 1985, 1995, 2002 Free Software Foundation, Inc.
0dc7e4aa RS	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 2, 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
3b7ad313 EN	18	the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
3b7ad313 EN	19	Boston, MA 02111-1307, USA. */
0dc7e4aa RS	20
	21
	22	/* The following three symbols give information on
	23	the size of various data types. */
	24
	25
	26	/* Define WORDS_BIG_ENDIAN iff lowest-numbered byte in a word
	27	is the most significant byte. */
	28
	29	#define WORDS_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
	44	#ifndef m68k
	45	#define m68k
	46	#endif
	47
	48	/* Use type int rather than a union, to represent Lisp_Object */
	49	/* This is desirable for most machines. */
	50
	51	#define NO_UNION_TYPE
	52
	53	/* Define EXPLICIT_SIGN_EXTEND if XINT must explicitly sign-extend
	54	the 24-bit bit field into an int. In other words, if bit fields
	55	are always unsigned.
	56
	57	If you use NO_UNION_TYPE, this flag does not matter. */
	58
	59	#define EXPLICIT_SIGN_EXTEND
	60
	61	/* Define CANNOT_DUMP on machines where unexec does not work.
	62	Then the function dump-emacs will not be defined
	63	and temacs will do (load "loadup") automatically unless told otherwise. */
	64
	65	/* #define CANNOT_DUMP */
	66
	67	/* Define VIRT_ADDR_VARIES if the virtual addresses of
	68	pure and impure space as loaded can vary, and even their
	69	relative order cannot be relied on.
	70
	71	Otherwise Emacs assumes that text space precedes data space,
	72	numerically. */
	73
	74	/* #define VIRT_ADDR_VARIES */
	75
	76	#ifdef linux
	77	#ifdef __ELF__
	78	#define DATA_SEG_BITS 0x80000000
	79	#endif
	80
	81	#define NO_REMAP
	82	#define TEXT_START 0
	83	#endif
ab5796a9 MB	84
	85	/* arch-tag: 4eadd161-b4e8-4b82-82a1-e4ce7f42969d
	86	(do not change this comment) */