src/m/sparc.h

   1 /* machine description file for Sun 4 SPARC.
   2    Copyright (C) 1987, 2001, 2002, 2003, 2004, 2005,
   3                  2006, 2007, 2008  Free Software Foundation, Inc.
   4
   5 This file is part of GNU Emacs.
   6
   7 GNU Emacs is free software; you can redistribute it and/or modify
   8 it under the terms of the GNU General Public License as published by
   9 the Free Software Foundation; either version 3, or (at your option)
  10 any later version.
  11
  12 GNU Emacs is distributed in the hope that it will be useful,
  13 but WITHOUT ANY WARRANTY; without even the implied warranty of
  14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15 GNU General Public License for more details.
  16
  17 You should have received a copy of the GNU General Public License
  18 along with GNU Emacs; see the file COPYING.  If not, write to
  19 the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
  20 Boston, MA 02110-1301, USA.  */
  21
  22 /* The following line tells the configuration script what sort of
  23    operating system this machine is likely to run.
  24    USUAL-OPSYS="note"
  25
  26 NOTE-START
  27 Use -opsystem=sunos4 for operating system version 4, and
  28 -opsystem=bsd4-2 for earlier versions.
  29 NOTE-END  */
  30
  31 /* Define WORDS_BIG_ENDIAN if lowest-numbered byte in a word
  32    is the most significant byte.  */
  33
  34 #define WORDS_BIG_ENDIAN
  35
  36 /* Define NO_ARG_ARRAY if you cannot take the address of the first of a
  37  * group of arguments and treat it as an array of the arguments.  */
  38
  39 #define NO_ARG_ARRAY
  40
  41 /* Say this machine is a sparc */
  42
  43 #ifndef sparc
  44 #define sparc
  45 #endif
  46
  47 /* Use type int rather than a union, to represent Lisp_Object */
  48
  49 #define NO_UNION_TYPE
  50
  51 /* XINT must explicitly sign-extend */
  52
  53 #define EXPLICIT_SIGN_EXTEND
  54
  55 /* Data type of load average, as read out of kmem.  */
  56
  57 #define LOAD_AVE_TYPE long
  58
  59 /* Convert that into an integer that is 100 for a load average of 1.0  */
  60
  61 #define LOAD_AVE_CVT(x) (int) (((double) (x)) * 100.0 / FSCALE)
  62
  63 /* Mask for address bits within a memory segment */
  64
  65 #define SEGMENT_MASK (SEGSIZ - 1)
  66
  67 #if !defined (__NetBSD__) && !defined (__linux__) && !defined (__OpenBSD__)
  68 /* This really belongs in s/sun.h.  */
  69
  70 /* Say that the text segment of a.out includes the header;
  71    the header actually occupies the first few bytes of the text segment
  72    and is counted in hdr.a_text.  */
  73
  74 #define A_TEXT_OFFSET(HDR) sizeof (HDR)
  75
  76 /* This is the offset of the executable's text, from the start of the file.  */
  77
  78 #define A_TEXT_SEEK(HDR) (N_TXTOFF (hdr) + sizeof (hdr))
  79
  80 #endif /* not __NetBSD__ and not __linux__ and not __OpenBSD__ */
  81
  82 #ifdef __arch64__               /* GCC, 64-bit ABI.  */
  83 #define BITS_PER_LONG 64
  84 #ifndef _LP64
  85 #define _LP64                   /* Done on Alpha -- not sure if it
  86                                    should be here.  -- fx */
  87 #endif
  88 #endif
  89
  90 /* arch-tag: 0a6f7882-33fd-4811-9832-7466c51e50f7
  91    (do not change this comment) */