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- /* m-alliant-2800.h Alliant FX/2800 machine running Concentrix 2800.
- Copyright (C) 1990 Free Software Foundation, Inc.
-
- 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. */
-
- #undef 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. */
-
- #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
- #define ALLIANT_2800
- #define sun /* Use X support for Sun keyboard stuff. */
- #define C_OPTIMIZE_SWITCH -Og /* No concurrent code allowed here. */
- #define VALBITS 26
- #define GCTYPEBITS 5
-
- /* 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
-
- /* Concentrix uses a different kernel symbol for load average. */
-
- #undef LDAV_SYMBOL /* Undo definition in s-bsd4-2.h */
- #define LDAV_SYMBOL "_Loadavg"
-
- /* 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) (x * 100 / LOADAVG_SCALE)
-
- /* include <sys/param.h> for the definition of LOADAVG_SCALE, and also
- LOADAVG_SIZE, the number of items in the Loadavg array. */
-
- /* 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 UNEXEC unexfx2800.o
- #define LIBS_MACHINE -lalliant
-
- /* 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
-
- /* 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;}
-
- /* POSIX Compatibility */
- /* Use System V.4 style getdents/readdir <dirent.h> for 2.2 and up. */
- #define SYSV_SYSTEM_DIR
- #define HAVE_CLOSEDIR
-