--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/m/intel386.h	Mon Aug 13 08:45:50 2007 +0200
@@ -0,0 +1,245 @@
+/* Machine description file for intel 386.
+   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. */
+
+/* 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, usg5-2-2, usg5-3,
+  isc2-2, 386-ix, esix, linux, sco3.2v4, and xenix.
+
+  18.58 should support a wide variety of operating systems.
+  Use isc2-2 for Interactive 386/ix version 2.2.
+  Use 386ix for prior versions.
+  Use esix for Esix.
+  Use linux for Linux.
+  It isn't clear what to do on an SCO system.
+
+  -machine=is386 is used for an Integrated Solutions 386 machine.
+  It may also be correct for Microport systems.
+
+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.
+
+Prime EXL (-machine=intel386 -opsystem=usg5-3)
+
+  Minor changes merged in 19.1.
+NOTE-END */
+
+/* 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:
+   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 and XENIX,
+   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 XENIX
+/* Data type of load average, as read out of kmem.  */
+#define LOAD_AVE_TYPE short
+
+/* Convert that into an integer that is 100 for a load average of 1.0  */
+#define LOAD_AVE_CVT(x) (((double) (x)) * 100.0 / FSCALE)
+
+#define FSCALE 256.0         /* determined by experimentation...  */
+#endif
+
+
+#ifdef SOLARIS2
+/* 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))
+
+/* J.W.Hawtin@lut.ac.uk say Solaris 2.4 as well as Solaris 2.1 on X86
+   requires -lkvm as well */
+#define LIBS_MACHINE -lkvm
+
+#ifndef SOLARIS2_4
+/* J.W.hawtin@lut.ac.uk says Solaris 2.1 on the X86 has FSCALE defined in a
+   system header. */
+
+#else /* SOLARIS2_4 */
+#ifndef __GNUC__
+#if 0 /* wisner@gryphon.com says this screws up cpp */
+#define C_SWITCH_MACHINE -Xa
+#endif
+#ifndef NOT_C_CODE
+#ifdef HAVE_ALLOCA_H
+#include <alloca.h>
+#endif /* HAVE_ALLOCA_H */
+#endif /* not NOT_C_CODE */
+#endif /* not __GNUC__ */
+#endif /* SOLARIS2_4 */
+
+/* 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.  */
+
+#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
+#endif /* not SOLARIS2 */
+
+/* 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 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 */
+
+#ifdef XENIX
+
+/* 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
+
+#define STACK_DIRECTION -1
+
+/* Since cannot purify, use standard Xenix 386 startup code. */
+
+#define START_FILES	/lib/386/Sseg.o pre-crt0.o /lib/386/Scrt0.o
+
+/* These really use terminfo.  */
+
+#define LIBS_TERMCAP /lib/386/Slibcurses.a  \
+   /lib/386/Slibtinfo.a /lib/386/Slibx.a
+
+/* Standard libraries for this machine.  Since `-l' doesn't work in `ld'.  */
+/* '__fltused' is unresolved w/o Slibcfp.a */
+#define LIB_STANDARD /lib/386/Slibcfp.a /lib/386/Slibc.a
+#else /* not XENIX */
+
+/* this brings in alloca() if we're using cc */
+#ifdef USG
+#ifndef LIB_STANDARD
+#ifdef USG5_4
+#define LIB_STANDARD -lc
+#else /* not USG5_4 */
+#define LIB_STANDARD -lPW -lc
+#endif /* not USG5_4 */
+#endif /* LIB_STANDARD */
+
+#define HAVE_ALLOCA
+#define NO_REMAP 
+#define TEXT_START 0
+#endif /* USG */
+#endif /* not XENIX */
+
+#ifdef BSD
+#define HAVE_ALLOCA
+#endif /* BSD */
+
+/* If compiling with GCC, let GCC implement alloca.  */
+#if defined(__GNUC__) && !defined(alloca)
+#define alloca(n) __builtin_alloca(n)
+#define HAVE_ALLOCA
+#endif
+
+/* Solaris defines alloca to __builtin_alloca & doesn't provide a prototype. */
+#ifdef __SUNPRO_C
+#  ifndef NOT_C_CODE
+#    include <alloca.h>
+     void *__builtin_alloca (unsigned int);
+#  endif /* __SUNPRO_C */
+#endif /* NOT_C_CODE */
+
+#ifdef USG5_4
+#define DATA_SEG_BITS 0x08000000
+#endif
+
+#ifdef MSDOS
+#define NO_REMAP
+#endif
+
+#ifdef WINDOWSNT
+#define VIRT_ADDR_VARIES
+#define DATA_END 	get_data_end ()
+#define DATA_START 	get_data_start ()
+#define HAVE_ALLOCA
+#endif
+
+#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
+
+#ifdef __GNUC__
+/* GCC's alloca() is semi-broken.  See lisp.h.
+
+   This brokenness has been confirmed under both Linux and NetBSD.
+   It may also exist on non-Intel architectures. */
+#define BROKEN_ALLOCA_IN_FUNCTION_CALLS
+#endif
+
+/* XEmacs change: John Hughes <john@AtlanTech.COM> says using vfork
+   under i386-unknown-sysv4.2 makes C-g sometimes cause a SIGSEGV
+   in TTY mode; the problem goes away if you use fork */
+#ifdef USG5_4_2
+#define vfork fork
+#endif