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

/* RTPC machine dependent defines 
   Copyright (C) 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 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 line tells the configuration script what sort of 
   operating system this machine is likely to run.
   USUAL-OPSYS="bsd4-2"  */

/* 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.  */

#define ibmrt
#define romp /* unfortunately old include files are hanging around.  */

/* 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 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.  */

#define LOAD_AVE_TYPE double	/* For AIS (sysV) */

/* 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)

/* 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 HAVE_ALLOCA
\f
/* The data segment in this machine starts at a fixed address.
   An address of data cannot be stored correctly in a Lisp object;
   we always lose the high bits.  We must tell XPNTR to add them back.  */

#define DATA_SEG_BITS 0x10000000
#define DATA_START    0x10000000

/* The text segment always starts at a fixed address.
   This way we don't need to have a label _start defined.  */
#define TEXT_START 0

/* Taking a pointer to a char casting it as int pointer */
/* and then taking the int which the int pointer points to */
/* is practically guaranteed to give erroneous results */

#define NEED_ERRNO

#define SKTPAIR

/* BSD has BSTRING.  */

#define BSTRING

/* Special switches to give the C compiler.  */

#ifndef __GNUC__
#define C_SWITCH_MACHINE -Dalloca=_Alloca
#endif

/* Don't attempt to relabel some of the data as text when dumping.
   It does not work because their virtual addresses are not consecutive.
   This enables us to use the standard crt0.o.  */

#define NO_REMAP

/* Use the bitmap files that come with Emacs.  */
#define EMACS_BITMAP_FILES
Commit	Line	Data
30fe07a6 JB	1	/* RTPC machine dependent defines
	2	Copyright (C) 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
17385adc	8	the Free Software Foundation; either version 2, or (at your option)
30fe07a6 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
3b7ad313 EN	18	the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
3b7ad313 EN	19	Boston, MA 02111-1307, USA. */
30fe07a6 JB	20
	21
	22	/* The following line tells the configuration script what sort of
	23	operating system this machine is likely to run.
	24	USUAL-OPSYS="bsd4-2" */
	25
74d3f806 KH	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
30fe07a6 JB	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
30fe07a6 JB	41	/* Now define a symbol for the cpu type, if your compiler
	42	does not define it automatically. */
	43
	44	#define ibmrt
	45	#define romp /* unfortunately old include files are hanging around. */
	46
	47	/* Use type int rather than a union, to represent Lisp_Object */
	48	/* This is desirable for most machines. */
	49
	50	#define NO_UNION_TYPE
	51
	52	/* Define EXPLICIT_SIGN_EXTEND if XINT must explicitly sign-extend
09b3d662	53	the bit field into an int. In other words, if bit fields
30fe07a6 JB	54	are always unsigned.
	55
	56	If you use NO_UNION_TYPE, this flag does not matter. */
	57
	58	#define EXPLICIT_SIGN_EXTEND
	59
	60	/* Data type of load average, as read out of kmem. */
	61
	62	#define LOAD_AVE_TYPE double /* For AIS (sysV) */
	63
	64	/* Convert that into an integer that is 100 for a load average of 1.0 */
	65
	66	#define LOAD_AVE_CVT(x) (int) (((double) (x)) * 100.0)
	67
	68	/* Define CANNOT_DUMP on machines where unexec does not work.
	69	Then the function dump-emacs will not be defined
	70	and temacs will do (load "loadup") automatically unless told otherwise. */
	71
	72	/* #define CANNOT_DUMP */
	73
	74	/* Define VIRT_ADDR_VARIES if the virtual addresses of
	75	pure and impure space as loaded can vary, and even their
	76	relative order cannot be relied on.
	77
	78	Otherwise Emacs assumes that text space precedes data space,
	79	numerically. */
	80
	81	#undef VIRT_ADDR_VARIES
	82
	83	/* Define C_ALLOCA if this machine does not support a true alloca
	84	and the one written in C should be used instead.
	85	Define HAVE_ALLOCA to say that the system provides a properly
	86	working alloca function and it should be used.
	87	Define neither one if an assembler-language alloca
	88	in the file alloca.s should be used. */
	89
	90	#define HAVE_ALLOCA
	91	\f
	92	/* The data segment in this machine starts at a fixed address.
	93	An address of data cannot be stored correctly in a Lisp object;
	94	we always lose the high bits. We must tell XPNTR to add them back. */
	95
	96	#define DATA_SEG_BITS 0x10000000
	97	#define DATA_START 0x10000000
	98
	99	/* The text segment always starts at a fixed address.
	100	This way we don't need to have a label _start defined. */
	101	#define TEXT_START 0
	102
30fe07a6 JB	103	/* Taking a pointer to a char casting it as int pointer */
	104	/* and then taking the int which the int pointer points to */
	105	/* is practically guaranteed to give erroneous results */
	106
	107	#define NEED_ERRNO
	108
	109	#define SKTPAIR
	110
	111	/* BSD has BSTRING. */
	112
	113	#define BSTRING
	114
	115	/* Special switches to give the C compiler. */
	116
2241819f	117	#ifndef __GNUC__
30fe07a6	118	#define C_SWITCH_MACHINE -Dalloca=_Alloca
2241819f	119	#endif
30fe07a6 JB	120
	121	/* Don't attempt to relabel some of the data as text when dumping.
	122	It does not work because their virtual addresses are not consecutive.
	123	This enables us to use the standard crt0.o. */
	124
	125	#define NO_REMAP
d5cc6be5	126
5b335fca RS	127	/* Use the bitmap files that come with Emacs. */
5b335fca RS	128	#define EMACS_BITMAP_FILES