--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/m/x86_64.h	Mon Apr 21 11:42:50 2014 +0100
@@ -0,0 +1,105 @@
+/* Machine description file for intel 386.
+   Copyright (C) 1987 Free Software Foundation, Inc.
+
+This file is part of XEmacs.
+
+XEmacs 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 3 of the License, or (at your
+option) any later version.
+
+XEmacs 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.  If not, see <http://www.gnu.org/licenses/>. */
+
+/* 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="note"
+
+NOTE-START
+Intel 386 (-machine=intel386 or -machine=is386.h)
+
+  The possibilities for -opsystem are: bsd4-2, usg5-4, usg5-4-2, and linux.
+
+  18.58 should support a wide variety of operating systems.
+  Use linux for Linux.
+  It isn't clear what to do on an SCO system.
+
+Cubix QBx/386 (-machine=intel386 -opsystem=usg5-3)
+
+  Changes merged in 19.1.  Systems before 2/A/0 may fail to compile etags.c
+  due to a compiler bug.
+NOTE-END */
+
+/* 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 */
+
+#define INTEL386
+
+/* crt0.c, if it is used, should use the i386-bsd style of entry.
+   with no extra dummy args.  On USG, NO_REMAP says this isn't used. */
+
+/* Mly 16-Jan-96 16:38:32: this is part of a prototype -- same bug present in 
+   other m*.h files */
+#define CRT0_DUMMIES int bogus_fp,
+
+/* crt0.c should define a symbol `start' and do .globl with a dot.  */
+
+#define DOT_GLOBAL_START
+
+#ifdef SOLARIS2
+
+#ifdef ENABLE_SM_FILE_DECLS_OF_LOADAVG_STUFF
+
+/* 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  */
+/* This is totally uncalibrated. */
+#define LOAD_AVE_CVT(x) ((int) (((double) (x)) * 100.0 / FSCALE))
+
+#endif /* ENABLE_SM_FILE_DECLS_OF_LOADAVG_STUFF */
+
+/* configure thinks solaris X86 has gethostname, but it does not work,
+   so undefine it.  */
+#undef HAVE_GETHOSTNAME
+
+#else /* not SOLARIS2 */
+#ifdef USG5_4 /* Older USG systems do not support the load average.  */
+/* Data type of load average, as read out of kmem.  */
+
+#ifdef ENABLE_SM_FILE_DECLS_OF_LOADAVG_STUFF
+
+#define LOAD_AVE_TYPE long
+
+/* Convert that into an integer that is 100 for a load average of 1.0  */
+/* This is totally uncalibrated. */
+
+#define LOAD_AVE_CVT(x) ((int) (((double) (x)) * 100.0 / FSCALE))
+#define FSCALE 256.0
+
+#endif /* ENABLE_SM_FILE_DECLS_OF_LOADAVG_STUFF */
+
+#endif
+#endif /* not SOLARIS2 */
+
+#ifdef USG
+#define NO_REMAP 
+#define TEXT_START 0
+#endif /* USG */
+
+#ifdef linux
+/* libc-linux/sysdeps/linux/i386/ulimit.c says that due to shared library, */
+/* we cannot get the maximum address for brk */
+#define ULIMIT_BREAK_VALUE (32*1024*1024)
+
+#define SEGMENT_MASK ((SEGMENT_SIZE)-1)
+#endif