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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. */
-
- /* Synched up with: FSF 19.29. */
-
- /* 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. */
- #undef 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
-
-