src/m/sparc.h

   1 /* machine description file for Sun 4 SPARC.
   2    Copyright (C) 1987, 2001, 2002, 2003, 2004, 2005, 2006, 2007,
   3                  2008, 2009, 2010, 2011  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 of the License, or
  10 (at your option) 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.  If not, see <http://www.gnu.org/licenses/>.  */
  19
  20 /* The following line tells the configuration script what sort of
  21    operating system this machine is likely to run.
  22    USUAL-OPSYS="note"
  23
  24 NOTE-START
  25 Use -opsystem=sunos4 for operating system version 4, and
  26 -opsystem=bsd4-2 for earlier versions.
  27 NOTE-END  */
  28
  29 /* Define WORDS_BIG_ENDIAN if lowest-numbered byte in a word
  30    is the most significant byte.  */
  31
  32 #define WORDS_BIG_ENDIAN
  33
  34 /* Define NO_ARG_ARRAY if you cannot take the address of the first of a
  35  * group of arguments and treat it as an array of the arguments.  */
  36
  37 #define NO_ARG_ARRAY
  38
  39 /* __sparc__ is defined by the compiler by default.  */
  40
  41 /* XINT must explicitly sign-extend
  42    This flag only matters if you use USE_LISP_UNION_TYPE.  */
  43
  44 #define EXPLICIT_SIGN_EXTEND
  45
  46 /* Data type of load average, as read out of kmem.  */
  47
  48 #define LOAD_AVE_TYPE long
  49
  50 /* Convert that into an integer that is 100 for a load average of 1.0  */
  51
  52 #define LOAD_AVE_CVT(x) (int) (((double) (x)) * 100.0 / FSCALE)
  53
  54 /* Mask for address bits within a memory segment */
  55
  56 #define SEGMENT_MASK (SEGSIZ - 1)
  57
  58 #ifdef __arch64__               /* GCC, 64-bit ABI.  */
  59 #define BITS_PER_LONG 64
  60 #ifdef __linux__
  61 #undef START_FILES
  62 #define START_FILES pre-crt0.o /usr/lib64/crt1.o /usr/lib64/crti.o
  63
  64 /* The duplicate -lgcc is intentional in the definition of LIB_STANDARD.
  65    The reason is that some functions in libgcc.a call functions from libc.a,
  66    and some libc.a functions need functions from libgcc.a.  Since most
  67    versions of ld are one-pass linkers, we need to mention -lgcc twice,
  68    or else we risk getting unresolved externals.  */
  69 #undef LIB_STANDARD
  70 #define LIB_STANDARD -lgcc -lc -lgcc /usr/lib64/crtn.o
  71 #endif
  72
  73 #ifndef _LP64
  74 #define _LP64                   /* Done on Alpha -- not sure if it
  75                                    should be here.  -- fx */
  76 #endif
  77 #endif
  78
  79 /* arch-tag: 0a6f7882-33fd-4811-9832-7466c51e50f7
  80    (do not change this comment) */