src/m/sparc.h

   1 /* machine description file for Sun 4 SPARC.
   2    Copyright (C) 1987 Free Software Foundation, Inc.
   3
   4 This file is part of GNU Emacs.
   5
   6 GNU Emacs is free software; you can redistribute it and/or modify
   7 it under the terms of the GNU General Public License as published by
   8 the Free Software Foundation; either version 2, or (at your option)
   9 any later version.
  10
  11 GNU Emacs is distributed in the hope that it will be useful,
  12 but WITHOUT ANY WARRANTY; without even the implied warranty of
  13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14 GNU General Public License for more details.
  15
  16 You should have received a copy of the GNU General Public License
  17 along with GNU Emacs; see the file COPYING.  If not, write to
  18 the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
  19 Boston, MA 02111-1307, USA.  */
  20
  21 /* The following line tells the configuration script what sort of
  22    operating system this machine is likely to run.
  23    USUAL-OPSYS="note"
  24
  25 NOTE-START
  26 Use -opsystem=sunos4 for operating system version 4, and
  27 -opsystem=bsd4-2 for earlier versions.
  28 NOTE-END  */
  29
  30 /* Define WORDS_BIG_ENDIAN iff lowest-numbered byte in a word
  31    is the most significant byte.  */
  32
  33 #define WORDS_BIG_ENDIAN
  34
  35 /* Define NO_ARG_ARRAY if you cannot take the address of the first of a
  36  * group of arguments and treat it as an array of the arguments.  */
  37
  38 #define NO_ARG_ARRAY
  39
  40 /* Say this machine is a sparc */
  41
  42 #ifndef sparc
  43 #define sparc
  44 #endif
  45
  46 #ifdef __GNUC__
  47 # define C_OPTIMIZE_SWITCH -O
  48 #else
  49      /* This level of optimization is reported to work.  */
  50 # define C_OPTIMIZE_SWITCH -O2
  51 #endif
  52
  53 /* Use type int rather than a union, to represent Lisp_Object */
  54
  55 #define NO_UNION_TYPE
  56
  57 /* XINT must explicitly sign-extend */
  58
  59 #define EXPLICIT_SIGN_EXTEND
  60
  61 /* Data type of load average, as read out of kmem.  */
  62
  63 #define LOAD_AVE_TYPE long
  64
  65 /* Convert that into an integer that is 100 for a load average of 1.0  */
  66
  67 #define LOAD_AVE_CVT(x) (int) (((double) (x)) * 100.0 / FSCALE)
  68
  69 /* Define C_ALLOCA if this machine does not support a true alloca
  70    and the one written in C should be used instead.
  71    Define HAVE_ALLOCA to say that the system provides a properly
  72    working alloca function and it should be used.
  73    Define neither one if an assembler-language alloca
  74    in the file alloca.s should be used.  */
  75
  76 #define HAVE_ALLOCA
  77 #ifndef NOT_C_CODE
  78 #if __GNUC__ < 2 /* Modern versions of GCC handle alloca directly.  */
  79 #include <alloca.h>
  80 #endif
  81 #endif
  82
  83 /* Must use the system's termcap, if we use any termcap.
  84    It does special things.  */
  85
  86 #ifndef TERMINFO
  87 #define LIBS_TERMCAP -ltermcap
  88 #endif
  89
  90 /* Mask for address bits within a memory segment */
  91
  92 #define SEGMENT_MASK (SEGSIZ - 1)
  93
  94 /* Arrange to link with sun windows, if requested.  */
  95 /* For details on emacstool and sunfns, see etc/SUN-SUPPORT */
  96 /* These programs require Sun UNIX 4.2 Release 3.2 or greater */
  97
  98 #ifdef HAVE_SUN_WINDOWS
  99 #define OTHER_FILES  ${etcdir}emacstool
 100 #define LIBS_MACHINE -lsuntool -lsunwindow -lpixrect
 101 #define OBJECTS_MACHINE sunfns.o
 102 #define SYMS_MACHINE syms_of_sunfns ()
 103 #define PURESIZE 130000
 104 #endif
 105
 106 #ifndef __NetBSD__
 107 /* This really belongs in s/sun.h.  */
 108
 109 /* Say that the text segment of a.out includes the header;
 110    the header actually occupies the first few bytes of the text segment
 111    and is counted in hdr.a_text.  */
 112
 113 #define A_TEXT_OFFSET(HDR) sizeof (HDR)
 114
 115 /* This is the offset of the executable's text, from the start of the file.  */
 116
 117 #define A_TEXT_SEEK(HDR) (N_TXTOFF (hdr) + sizeof (hdr))
 118
 119 #endif /* __NetBSD__ */