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

/* m- file for Mips machines.
   Copyright (C) 1987, 1992, 1999, 2001, 2002, 2003, 2004, 2005, 2006,
                 2007, 2008, 2009  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/>.  */


/* The following line tells the configuration script what sort of
   operating system this machine is likely to run.
   USUAL-OPSYS="note"

NOTE-START
This is only used on GNU/Linux.
NOTE-END  */

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

#if ! (defined (__MIPSEL__) || defined (MIPSEL) || defined (_MIPSEL))
#define WORDS_BIG_ENDIAN
#endif

/* 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 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

/* Describe layout of the address space in an executing process.  */

#define TEXT_START      0x00400000
#define DATA_START      0x10000000
#define DATA_SEG_BITS	0x10000000

\f
/* The standard definitions of these macros would work ok,
   but these are faster because the constants are short.  */

#define XUINT(a) (((unsigned)(a) << (BITS_PER_INT-VALBITS)) >> (BITS_PER_INT-VALBITS))

#define XSET(var, type, ptr)						\
  ((var) =								\
   ((int)(type) << VALBITS)						\
   + (((unsigned) (ptr) << (BITS_PER_INT-VALBITS)) >> (BITS_PER_INT-VALBITS)))

/* arch-tag: 8fd020ee-78a7-4d87-96ce-6129f52f7bee
   (do not change this comment) */
Commit	Line	Data
ec558adc	1	/* m- file for Mips machines.
eb3d11ef	2	Copyright (C) 1987, 1992, 1999, 2001, 2002, 2003, 2004, 2005, 2006,
76b6f707	3	2007, 2008, 2009 Free Software Foundation, Inc.
20c428fd JB	4
	5	This file is part of GNU Emacs.
	6
eb3d11ef	7	GNU Emacs is free software: you can redistribute it and/or modify
20c428fd	8	it under the terms of the GNU General Public License as published by
eb3d11ef GM	9	the Free Software Foundation, either version 3 of the License, or
eb3d11ef GM	10	(at your option) any later version.
20c428fd JB	11
	12	GNU Emacs is distributed in the hope that it will be useful,
	13	but WITHOUT ANY WARRANTY; without even the implied warranty of
	14	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	15	GNU General Public License for more details.
	16
	17	You should have received a copy of the GNU General Public License
eb3d11ef	18	along with GNU Emacs. If not, see <http://www.gnu.org/licenses/>. */
20c428fd JB	19
20c428fd JB	20
177c0ea7	21	/* The following line tells the configuration script what sort of
20c428fd JB	22	operating system this machine is likely to run.
	23	USUAL-OPSYS="note"
	24
	25	NOTE-START
c3b5f109	26	This is only used on GNU/Linux.
20c428fd JB	27	NOTE-END */
20c428fd JB	28
22e9fe24	29	/* Define WORDS_BIG_ENDIAN if lowest-numbered byte in a word
74d3f806 KH	30	is the most significant byte. */
74d3f806 KH	31
540c2788	32	#if ! (defined (__MIPSEL__) \|\| defined (MIPSEL) \|\| defined (_MIPSEL))
74d3f806	33	#define WORDS_BIG_ENDIAN
540c2788	34	#endif
74d3f806	35
20c428fd JB	36	/* Define NO_ARG_ARRAY if you cannot take the address of the first of a
	37	* group of arguments and treat it as an array of the arguments. */
	38
	39	#define NO_ARG_ARRAY
	40
20c428fd JB	41	/* Define EXPLICIT_SIGN_EXTEND if XINT must explicitly sign-extend
	42	the 24-bit bit field into an int. In other words, if bit fields
	43	are always unsigned.
	44
6e5cb96f	45	This flag only matters if you use USE_LISP_UNION_TYPE. */
20c428fd JB	46
	47	#define EXPLICIT_SIGN_EXTEND
	48
20c428fd JB	49	/* Describe layout of the address space in an executing process. */
20c428fd JB	50
f5e7cf48 RS	51	#define TEXT_START 0x00400000
	52	#define DATA_START 0x10000000
	53	#define DATA_SEG_BITS 0x10000000
20c428fd	54
20c428fd JB	55	\f
	56	/* The standard definitions of these macros would work ok,
	57	but these are faster because the constants are short. */
	58
5964b664	59	#define XUINT(a) (((unsigned)(a) << (BITS_PER_INT-VALBITS)) >> (BITS_PER_INT-VALBITS))
20c428fd	60
ec558adc JB	61	#define XSET(var, type, ptr) \
	62	((var) = \
	63	((int)(type) << VALBITS) \
5964b664	64	+ (((unsigned) (ptr) << (BITS_PER_INT-VALBITS)) >> (BITS_PER_INT-VALBITS)))
ab5796a9 MB	65
	66	/* arch-tag: 8fd020ee-78a7-4d87-96ce-6129f52f7bee
	67	(do not change this comment) */