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

/* machine description file for Masscomp 5000 series running RTU, ucb universe.
   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, 675 Mass Ave, Cambridge, MA 02139, USA.  */


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

/* 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.  */

#undef NO_ARG_ARRAY

/* Define WORD_MACHINE if addresses and such have
 * to be corrected before they can be used as byte counts.  */

#undef WORD_MACHINE

/* Now define a symbol for the cpu type, if your compiler
   does not define it automatically:
   vax, m68000, ns16000, pyramid, orion, tahoe and APOLLO
   are the ones defined so far.  */
/* Masscomp predefines mc68000. */
#define m68000 mc68000

/* 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.  */

#undef EXPLICIT_SIGN_EXTEND

/* 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.  */

#undef 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.  */

/* On return from a subroutine, the 68020 compiler restores old contents of
   register variables relative to sp, so alloca() screws up such routines.
   The following definitions should work on all Masscomps.  On the MC-5500
   (a 68000) one can #undef C_ALLOCA and #define HAVE_ALLOCA.  */
#ifdef mc500
#undef C_ALLOCA
#define HAVE_ALLOCA
#else
#define C_ALLOCA
#undef HAVE_ALLOCA
#endif

/* 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.  */

#undef NO_REMAP

/* crt0.c should use the vax-bsd style of entry, with a dummy arg.  */

#define CRT0_DUMMIES bogus_fp,

/* Name of file the to look in
   for the kernel symbol table (for load average) */

#define KERNEL_FILE "/unix"

/* This triggers some stuff to avoid a compiler bug */

#define MASSC_REGISTER_BUG

/* Prevent -lg from being used for debugging.  Not implemented?  */

#define LIBS_DEBUG

/*
 *	Define HAVE_TERMIO if the system provides sysV-style ioctls
 *	for terminal control.
 */

#define HAVE_TERMIO

/* Adjust a header field for the executable file about to be dumped.  */

#define ADJUST_EXEC_HEADER   \
  hdr.a_stamp = STAMP13; /* really want the latest stamp, whatever it is */
Commit	Line	Data
20c428fd JB	1	/* machine description file for Masscomp 5000 series running RTU, ucb universe.
	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)
20c428fd 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
	18	the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. */
	19
	20
	21	/* The following line tells the configuration script what sort of
	22	operating system this machine is likely to run.
	23	USUAL-OPSYS="rtu" */
	24
	25	/* The following three symbols give information on
	26	the size of various data types. */
	27
	28	#define SHORTBITS 16 /* Number of bits in a short */
	29
	30	#define INTBITS 32 /* Number of bits in an int */
	31
	32	#define LONGBITS 32 /* Number of bits in a long */
	33
	34	/* Define BIG_ENDIAN iff lowest-numbered byte in a word
	35	is the most significant byte. */
	36
	37	#define BIG_ENDIAN
	38
	39	/* Define NO_ARG_ARRAY if you cannot take the address of the first of a
	40	* group of arguments and treat it as an array of the arguments. */
	41
	42	#undef NO_ARG_ARRAY
	43
	44	/* Define WORD_MACHINE if addresses and such have
	45	* to be corrected before they can be used as byte counts. */
	46
	47	#undef WORD_MACHINE
	48
20c428fd JB	49	/* Now define a symbol for the cpu type, if your compiler
	50	does not define it automatically:
	51	vax, m68000, ns16000, pyramid, orion, tahoe and APOLLO
	52	are the ones defined so far. */
	53	/* Masscomp predefines mc68000. */
	54	#define m68000 mc68000
	55
	56	/* Use type int rather than a union, to represent Lisp_Object */
	57	/* This is desirable for most machines. */
	58
	59	#define NO_UNION_TYPE
	60
	61	/* Define EXPLICIT_SIGN_EXTEND if XINT must explicitly sign-extend
	62	the 24-bit bit field into an int. In other words, if bit fields
	63	are always unsigned.
	64
	65	If you use NO_UNION_TYPE, this flag does not matter. */
	66
	67	#undef EXPLICIT_SIGN_EXTEND
	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
	81	#undef CANNOT_DUMP
	82
	83	/* Define VIRT_ADDR_VARIES if the virtual addresses of
	84	pure and impure space as loaded can vary, and even their
	85	relative order cannot be relied on.
	86
	87	Otherwise Emacs assumes that text space precedes data space,
	88	numerically. */
	89
	90	#undef VIRT_ADDR_VARIES
	91
	92	/* Define C_ALLOCA if this machine does not support a true alloca
	93	and the one written in C should be used instead.
	94	Define HAVE_ALLOCA to say that the system provides a properly
	95	working alloca function and it should be used.
	96	Define neither one if an assembler-language alloca
	97	in the file alloca.s should be used. */
	98
	99	/* On return from a subroutine, the 68020 compiler restores old contents of
	100	register variables relative to sp, so alloca() screws up such routines.
	101	The following definitions should work on all Masscomps. On the MC-5500
	102	(a 68000) one can #undef C_ALLOCA and #define HAVE_ALLOCA. */
	103	#ifdef mc500
	104	#undef C_ALLOCA
	105	#define HAVE_ALLOCA
	106	#else
	107	#define C_ALLOCA
	108	#undef HAVE_ALLOCA
	109	#endif
	110
	111	/* Define NO_REMAP if memory segmentation makes it not work well
	112	to change the boundary between the text section and data section
113	when Emacs is dumped. If you define this, the preloaded Lisp
114	code will not be sharable; but that's better than failing completely. */
115
116	#undef NO_REMAP
117
118	/* crt0.c should use the vax-bsd style of entry, with a dummy arg. */
119
120	#define CRT0_DUMMIES bogus_fp,
121
122	/* Name of file the to look in
123	for the kernel symbol table (for load average) */
124
125	#define KERNEL_FILE "/unix"
126
127	/* This triggers some stuff to avoid a compiler bug */
128
129	#define MASSC_REGISTER_BUG
130
131	/* Prevent -lg from being used for debugging. Not implemented? */
132
133	#define LIBS_DEBUG
134
135	/*
136	* Define HAVE_TERMIO if the system provides sysV-style ioctls
137	* for terminal control.
138	*/
139
140	#define HAVE_TERMIO
141
142	/* Adjust a header field for the executable file about to be dumped. */
143
144	#define ADJUST_EXEC_HEADER \
145	hdr.a_stamp = STAMP13; /* really want the latest stamp, whatever it is */