Initial revision

1 files changed, 137 insertions, 0 deletions

diff --git a/src/m/sequent-ptx.h b/src/m/sequent-ptx.h
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+/* machine description file for SEQUENT machines running DYNIX/ptx
+   Copyright (C) 1985, 1986 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 GNU Emacs; see the file COPYING.  If not, write to
+the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.  */
+
+
+/* The following line tells the configuration script what sort of 
+   operating system this machine is likely to run.
+   USUAL-OPSYS="ptx"  */
+
+#include "intel386.h"
+
+/* Define how to take a char and sign-extend into an int.
+   On machines where char is signed, this is a no-op.  */
+/* CHECK THIS */
+#define SIGN_EXTEND_CHAR(c) (c)
+
+/* 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.  */
+
+/* BTW: ptx defines _SEQUENT_, i386 */
+
+/* Use type int rather than a union, to represent Lisp_Object */
+/* This is desirable for most machines.  */
+
+#define NO_UNION_TYPE
+
+/* crt0.c should use the vax-bsd style of entry, with these dummy args.  */
+/* Already defined.  Assume prior definition works for PTX.  */
+#if 0
+#undef CRT0_DUMMIES
+#define CRT0_DUMMIES dummy1, dummy2, dummy3,
+#endif
+
+/* Define EXPLICIT_SIGN_EXTEND if XINT must explicitly sign-extend
+   the 24-bit 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
+
+/* Data type of load average, as read out of kmem.  */
+
+#define LOAD_AVE_TYPE unsigned long
+
+/* Convert that into an integer that is 100 for a load average of 1.0  */
+
+#define FSCALE  1000.0
+#define LOAD_AVE_CVT(x) (int) (((double) (x)) * 100.0 / FSCALE)
+
+/* 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 */
+
+/* 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.  */
+
+#ifndef __GNUC__
+#define C_ALLOCA
+#undef HAVE_ALLOCA
+#endif
+
+/* 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.  */
+/* On PTX, can't seem to get a valid executable unless NO_REMAP is
+   defined.  This did work in the Sequent patched Emacs 18.57.  */
+#ifndef NO_REMAP
+#define NO_REMAP
+#endif
+/* #undef NO_REMAP */
+
+/* If a valid PTX executable could be dumped without NO_REMAP defined, 
+   here's a guess at some defines to make it work.  */
+#ifndef NO_REMAP
+
+/* PTX has getpagesize() but it returns 296. Using the default method of
+   including getpagesize.h in unexec.c returns 4096 which seems more
+   reasonable.  */
+/* #define HAVE_GETPAGESIZE */
+
+/* Override magic number for a.out header.  */
+#define EXEC_MAGIC 0411         /* from a.out.h: separated I&D */
+
+#define ADJUST_TEXT_SCNHDR_SIZE
+#define ADJUST_TEXTBASE
+
+/* The file sections in the Symmetry a.out must be on 4K boundaries.  */
+/* #define DATA_SECTION_ALIGNMENT       (4096-1) */
+
+#endif  /* ifndef NO_REMAP */
+
+/* Avoids a compiler bug.  */
+#define TAHOE_REGISTER_BUG
+
+/* (short) negative-int doesn't sign-extend correctly.  */
+#define SHORT_CAST_BUG
+
+/* Cause compilations to be done in parallel in ymakefile.  */
+#define MAKE_PARALLEL $&
+
+/* Use terminfo library.  */
+#define LIBS_TERMCAP -ltermlib
+