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/* m-alliant.h Alliant machine running system version 2 or 3.
Copyright (C) 1985, 1986, 1987 Free Software Foundation, Inc.
Note that for version 1 of the Alliant system
you should use m-alliant1.h instead of this file.
Use m-alliant4.h for version 4.
This file is part of GNU Emacs.
GNU Emacs is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY. No author or distributor
accepts responsibility to anyone for the consequences of using it
or for whether it serves any particular purpose or works at all,
unless he says so in writing. Refer to the GNU Emacs General Public
License for full details.
Everyone is granted permission to copy, modify and redistribute
GNU Emacs, but only under the conditions described in the
GNU Emacs General Public License. A copy of this license is
supposed to have been given to you along with GNU Emacs so you
can know your rights and responsibilities. It should be in a
file named COPYING. Among other things, the copyright notice
and this notice must be preserved on all copies. */
/* 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. */
#ifdef ALLIANT_1
#define NO_ARG_ARRAY
#endif
/* Define WORD_MACHINE if addresses and such have
* to be corrected before they can be used as byte counts. */
#undef WORD_MACHINE
/* Define how to take a char and sign-extend into an int.
On machines where char is signed, this is a no-op. */
#define SIGN_EXTEND_CHAR(c) (c)
/* 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. */
#define ALLIANT
/* 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. */
/* On Alliants, bitfields are unsigned. */
#define EXPLICIT_SIGN_EXTEND
/* No load average information available for Alliants. */
#undef LOAD_AVE_TYPE
#undef LOAD_AVE_CVT
/* 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. */
#undef C_ALLOCA
#define HAVE_ALLOCA
#ifdef ALLIANT_1
#define C_ALLOCA
#undef HAVE_ALLOCA
#endif /* ALLIANT_1 */
/* 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. */
/* Actually, Alliant CONCENTRIX does paging "right":
data pages are copy-on-write, which means that the pure data areas
are shared automatically and remapping is not necessary. */
#define NO_REMAP
/* Alliant needs special crt0.o because system version is not reentrant */
#define START_FILES crt0.o
/* Alliant dependent code for dumping executing image.
See crt0.c code for alliant. */
#define ADJUST_EXEC_HEADER {\
extern int _curbrk, _setbrk;\
_setbrk = _curbrk;\
hdr.a_bss_addr = bss_start;\
unexec_text_start = hdr.a_text_addr;}
/* cc screws up on long names. Try making cpp replace them. */
#ifdef ALLIANT_1
#define Finsert_abbrev_table_description Finsert_abbrev_table_descrip
#define internal_with_output_to_temp_buffer internal_with_output_to_tem
#endif
/* "vector" is a typedef in /usr/include/machine/reg.h, so its use as
a variable name causes errors when compiling under ANSI C. */
#define vector xxvector
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