--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/m/iris4d.h	Mon Aug 13 08:45:50 2007 +0200
@@ -0,0 +1,164 @@
+/* machine description file for Iris-4D machines.  Use with s/irix*.h.
+   Copyright (C) 1987 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. */
+
+/* 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:
+   Ones defined so far include vax, m68000, ns16000, pyramid,
+   orion, tahoe, APOLLO and many others */
+
+#ifndef mips
+#define mips
+#endif
+
+#ifndef IRIS_4D
+#define IRIS_4D
+#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
+
+/* jg@genmagic.genmagic.com (John Giannandrea) says this is unnecessary.  */
+#if 0
+/* Data type of load average, as read out of kmem.  */
+
+#define LOAD_AVE_TYPE long	/* This doesn't quite work on the 4D */
+
+/* Convert that into an integer that is 100 for a load average of 1.0  */
+
+#define LOAD_AVE_CVT(x) (int)(((double)(x)*100)/1024.0)
+
+/* s-iris3-6.h uses /vmunix */
+
+#undef KERNEL_FILE
+#define KERNEL_FILE "/unix"
+#endif
+
+/* 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.  */
+
+/* #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 */  /* Sjoerd.Mullender@cwi.nl says no need.  */
+/* #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 machine requires completely different unexec code
+   which lives in a separate file.  Specify the file name.  */
+
+#ifdef USG5_4
+#undef UNEXEC
+/* FSF renames this file to unexsgi.o */
+#define UNEXEC unexelfsgi.o
+#else
+#define UNEXEC unexmips.o
+#endif
+
+#define TEXT_START 0x400000
+
+/*
+ * DATA_SEG_BITS forces extra bits to be or'd in with any pointers which
+ * were stored in a Lisp_Object (as Emacs uses fewer than 32 bits for
+ * the value field of a LISP_OBJECT).
+ */
+
+#define DATA_START 0x10000000
+#define DATA_SEG_BITS	0x10000000
+
+#undef LIBS_MACHINE
+/* -lsun in case using Yellow Pages for passwords.  */
+#define LIBS_MACHINE -lmld
+#define LIBS_DEBUG
+
+/* Define this if you have a fairly recent system,
+   in which crt1.o and crt1.n should be used.  */
+#define HAVE_CRTN
+
+#ifndef USG5_4
+#ifdef HAVE_CRTN
+/* Must define START-FILES so that the linker can find /usr/lib/crt0.o.  */
+#define START_FILES pre-crt0.o /usr/lib/crt1.o
+#define LIB_STANDARD -lc /usr/lib/crtn.o
+#else
+#define START_FILES pre-crt0.o /usr/lib/crt0.o
+/* The entry-point label (start of text segment) is `start', not `__start'.  */
+#define DEFAULT_ENTRY_ADDRESS start
+#define LIB_STANDARD -lc
+#endif
+#endif
+
+/* Use terminfo instead of termcap.  */
+
+#define TERMINFO
+
+/* Letter to use in finding device name of first pty,
+  if system supports pty's.  'a' means it is /dev/ptya0  */
+
+#undef FIRST_PTY_LETTER
+#define FIRST_PTY_LETTER 'q'
+
+/* Define STACK_DIRECTION for alloca.c */
+
+#undef STACK_DIRECTION
+#define STACK_DIRECTION -1
+
+#ifndef __GNUC__
+/* Turn off some "helpful" error checks for type mismatches
+   that we can't fix without breaking other machines.  */
+#ifdef IRIX_FORCE_32_BITS
+#ifdef THIS_IS_MAKEFILE
+#define C_SWITCH_MACHINE -32
+#endif
+#endif /* IRIX_FORCE_32_BITS */
+#endif /* not __GNUC__ */