[comp.emacs] m-convex.h

raible@ORVILLE.NAS.NASA.GOV.UUCP (12/05/87)

Here it is.  It works on our C1 with s-bsd4-2.h.  It requires the
following function (I put it in sysdep.c):

---------------- addition to sysdep.c for the convex ----------------
#ifdef CONVEX

/* See m-convex.h */

#define LI_SIGNBIT  (1 << (VALBITS-1))
#define LI_NEGMASK  (~ ((1<<VALBITS) - 1))

convex_XINT(a)
     int a;
{
  if (a & LI_SIGNBIT)
    return (a | LI_NEGMASK);
  else
    return (XUINT(a));
}
#endif

---------------- m-convex.h ----------------

/* m- file template.
   Copyright (C) 1985 Richard M. Stallman.

This file is part of GNU Emacs.

GNU Emacs is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY.  No author or distributor
accepts responsibility to anyone for the consequences of using it
or for whether it serves any particular purpose or works at all,
unless he says so in writing.  Refer to the GNU Emacs General Public
License for full details.

Everyone is granted permission to copy, modify and redistribute
GNU Emacs, but only under the conditions described in the
GNU Emacs General Public License.   A copy of this license is
supposed to have been given to you along with GNU Emacs so you
can know your rights and responsibilities.  It should be in a
file named COPYING.  Among other things, the copyright notice
and this notice must be preserved on all copies.  */


/* The following three symbols give information on
 the size of various data types.  */

#define SHORTBITS 16		/* Number of bits in a short */

#define INTBITS 32		/* Number of bits in an int */

#define LONGBITS 32		/* Number of bits in a long */

#define GCTYPEBITS 6

/*
 * Some different definitions because:
 *  1) Convex addresses have high order bit set.
 *  2) Convex right shift is logical, not arithmetic.  The only way to
 *     do XINT on the convex involves looking at the argument twice.
 *     Since the arg sometimes has side effects, and sometimes contains
 *     calls to XINT, we define it as a procedure in sysdep.c.
 */
#define DATA_SEG_BITS (1 << (INTBITS-1))
#define XTYPE(a) XGCTYPE(a)
#define XINT(a)  convex_XINT(a)


/* Define BIG_ENDIAN iff lowest-numbered byte in a word
   is the most significant byte.  */

#define BIG_ENDIAN

/* Define NO_ARG_ARRAY if you cannot take the address of the first of a
 * group of arguments and treat it as an array of the arguments.
 * Maybe it would be better to simply correct the code. */

#define NO_ARG_ARRAY

/* Define WORD_MACHINE if addresses and such have
 * to be corrected before they can be used as byte counts.  */

/* #define WORD_MACHINE */

/* Define how to take a char and sign-extend into an int.
   On machines where char is signed, this is a no-op.  */

#define SIGN_EXTEND_CHAR(c) (c)

/* Now define a symbol for the cpu type, if your compiler
   does not define it automatically.  */

#define CONVEX

/* 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 no dummy args.  */

#define CRT0_DUMMIES

/* crt0.c should define a symbol `start' and do .globl with a dot.  */

#define DOT_GLOBAL_START

/* Data type of load average, as read out of kmem.  */

#define LOAD_AVE_TYPE double

/* Convert that into an integer that is 100 for a load average of 1.0  */

#define LOAD_AVE_CVT(x) (int) ((x) * 100.0)

/* 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 data space precedes text 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*/
#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 */