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

/* machine description file template.

Copyright (C) 1985, 1986, 2001, 2002, 2003, 2004, 2005, 2006, 2007,
  2008, 2009, 2010  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 3 of the License, 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.  If not, see <http://www.gnu.org/licenses/>.  */

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

/* Now define a symbol for the cpu type, if your compiler
   does not define it automatically.
   Ones defined so far include m68k and many others */

/* 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.

   This flag only matters if you use USE_LISP_UNION_TYPE.  */
#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 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

/* 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

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

   Check for any tests of $machine in configure.in, and add an entry
   for the new machine if needed.

   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.  */

/* arch-tag: d7dae0a9-4f99-4939-bef9-5738e1f33955
   (do not change this comment) */
Commit	Line	Data
20c428fd	1	/* machine description file template.
6a321bbc GM	2
	3	Copyright (C) 1985, 1986, 2001, 2002, 2003, 2004, 2005, 2006, 2007,
	4	2008, 2009, 2010 Free Software Foundation, Inc.
20c428fd JB	5
	6	This file is part of GNU Emacs.
	7
eb3d11ef	8	GNU Emacs is free software: you can redistribute it and/or modify
20c428fd	9	it under the terms of the GNU General Public License as published by
eb3d11ef GM	10	the Free Software Foundation, either version 3 of the License, or
eb3d11ef GM	11	(at your option) any later version.
20c428fd JB	12
	13	GNU Emacs is distributed in the hope that it will be useful,
	14	but WITHOUT ANY WARRANTY; without even the implied warranty of
	15	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	16	GNU General Public License for more details.
	17
	18	You should have received a copy of the GNU General Public License
eb3d11ef	19	along with GNU Emacs. If not, see <http://www.gnu.org/licenses/>. */
20c428fd	20
22e9fe24	21	/* Define WORDS_BIG_ENDIAN if lowest-numbered byte in a word
74d3f806	22	is the most significant byte. */
74d3f806 KH	23	#define WORDS_BIG_ENDIAN
74d3f806 KH	24
20c428fd	25	/* Now define a symbol for the cpu type, if your compiler
ad76189a DN	26	does not define it automatically.
ad76189a DN	27	Ones defined so far include m68k and many others */
20c428fd	28
20c428fd JB	29	/* Define EXPLICIT_SIGN_EXTEND if XINT must explicitly sign-extend
	30	the 24-bit bit field into an int. In other words, if bit fields
	31	are always unsigned.
	32
6e5cb96f	33	This flag only matters if you use USE_LISP_UNION_TYPE. */
20c428fd JB	34	#define EXPLICIT_SIGN_EXTEND
	35
	36	/* Data type of load average, as read out of kmem. */
20c428fd JB	37	#define LOAD_AVE_TYPE long
	38
	39	/* Convert that into an integer that is 100 for a load average of 1.0 */
20c428fd JB	40	#define LOAD_AVE_CVT(x) (int) (((double) (x)) * 100.0 / FSCALE)
20c428fd JB	41
20c428fd JB	42	/* Define VIRT_ADDR_VARIES if the virtual addresses of
	43	pure and impure space as loaded can vary, and even their
	44	relative order cannot be relied on.
	45
	46	Otherwise Emacs assumes that text space precedes data space,
	47	numerically. */
20c428fd JB	48	#define VIRT_ADDR_VARIES
20c428fd JB	49
20c428fd JB	50	/* Define NO_REMAP if memory segmentation makes it not work well
	51	to change the boundary between the text section and data section
	52	when Emacs is dumped. If you define this, the preloaded Lisp
	53	code will not be sharable; but that's better than failing completely. */
20c428fd	54	#define NO_REMAP
0c29c32c	55
7b570c76 GM	56	/* After adding support for a new machine, modify the large case
7b570c76 GM	57	statement in configure.in to recognize reasonable
00b1a5fb JB	58	configuration names, and add a description of the system to
	59	`etc/MACHINES'.
	60
7b570c76 GM	61	Check for any tests of $machine in configure.in, and add an entry
	62	for the new machine if needed.
	63
00b1a5fb JB	64	If you've just fixed a problem in an existing configuration file,
	65	you should also check `etc/MACHINES' to make sure its descriptions
	66	of known problems in that configuration should be updated. */
ab5796a9 MB	67
	68	/* arch-tag: d7dae0a9-4f99-4939-bef9-5738e1f33955
	69	(do not change this comment) */