--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/m/elxsi.h	Mon Aug 13 08:45:50 2007 +0200
@@ -0,0 +1,126 @@
+/* machine description file for Elxsi machine (running enix).
+   Copyright (C) 1986, 1992 Free Software Foundation, Inc.
+   Adapted by John Salmon
+
+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="usg5-2"  */
+
+/* This file was modified by Matt Crawford <matt@tank.uchicago.edu>
+   to work under Elxsi's 12.0 release of BSD unix. */
+
+/* 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:
+   vax, m68000, ns16000, pyramid, orion, tahoe and APOLLO
+   are the ones defined so far.  */
+
+#ifndef elxsi
+#define elxsi
+#endif
+
+/* 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
+
+
+/* Name of kernel load average variable */
+
+#undef LDAV_SYMBOL
+#define LDAV_SYMBOL "avenrun"
+
+/* 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.
+
+   Earlier versions couldn't dump.
+   Changes for 12.0 release are in 19.1.
+   Dumping should work now.  */
+
+/* #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.  */
+
+/* #define 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 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.  */
+/*#define NO_REMAP*/
+
+/* This is a guess for an alternate solution to whatever
+   problem motivated defining _sobuf in sysdep,c with extern char *_sobuf.  */
+#define _sobuf xsobuf
+
+/* Address of start of text segment as loaded.  */
+
+#define TEXT_START	0x800
+
+/* Tell crt0.c not to define environ.  */
+
+#define DONT_NEED_ENVIRON
+
+/* The elxsi has no debugger, so might as well optimize instead
+   of trying to make a symbol table.  */
+
+#define C_DEBUG_SWITCH -O
+
+/* Elxsi uses COFF under both Sys V and BSD environments */
+
+#define COFF
+
+#define ADJUST_EXEC_HEADER {\
+extern int _init_brk;\
+_init_brk = bss_start;\
+}