--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/m/alliant-2800.h	Mon Aug 13 08:45:50 2007 +0200
@@ -0,0 +1,120 @@
+/* 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 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 XEmacs; see the file COPYING.  If not, write to
+the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+Boston, MA 02111-1307, USA.  */
+
+/* Synched up with: FSF 19.31. */
+
+/* The following line tells the configuration script what sort of 
+   operating system this machine is likely to run.
+   USUAL-OPSYS="bsd4-3"  */
+
+/* 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.  */
+
+#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 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.  */
+/* 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;}
+
+#if 0 /* RMSmacs */
+/* Use the K&R version of the DEFUN macro.  */
+#define USE_NONANSI_DEFUN
+#endif