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  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 /* Say this machine is a sparc */
  40
  41 #ifndef sparc
  42 #define sparc
  43 #endif
  44
  45 /* Use type int rather than a union, to represent Lisp_Object */
  46
  47 #define NO_UNION_TYPE
  48
  49 /* XINT must explicitly sign-extend */
  50
  51 #define EXPLICIT_SIGN_EXTEND
  52
  53 /* Data type of load average, as read out of kmem.  */
  54
  55 #define LOAD_AVE_TYPE long
  56
  57 /* Convert that into an integer that is 100 for a load average of 1.0  */
  58
  59 #define LOAD_AVE_CVT(x) (int) (((double) (x)) * 100.0 / FSCALE)
  60
  61 /* Mask for address bits within a memory segment */
  62
  63 #define SEGMENT_MASK (SEGSIZ - 1)
  64
  65 #if !defined (__NetBSD__) && !defined (__linux__) && !defined (__OpenBSD__)
  66 /* This really belongs in s/sun.h.  */
  67
  68 /* Say that the text segment of a.out includes the header;
  69    the header actually occupies the first few bytes of the text segment
  70    and is counted in hdr.a_text.  */
  71
  72 #define A_TEXT_OFFSET(HDR) sizeof (HDR)
  73
  74 /* This is the offset of the executable's text, from the start of the file.  */
  75
  76 #define A_TEXT_SEEK(HDR) (N_TXTOFF (hdr) + sizeof (hdr))
  77
  78 #endif /* not __NetBSD__ and not __linux__ and not __OpenBSD__ */
  79
  80 #ifdef __arch64__               /* GCC, 64-bit ABI.  */
  81 #define BITS_PER_LONG 64
  82 #ifdef __linux__
  83 #undef START_FILES
  84 #define START_FILES pre-crt0.o /usr/lib64/crt1.o /usr/lib64/crti.o
  85
  86 /* The duplicate -lgcc is intentional in the definition of LIB_STANDARD.
  87    The reason is that some functions in libgcc.a call functions from libc.a,
  88    and some libc.a functions need functions from libgcc.a.  Since most
  89    versions of ld are one-pass linkers, we need to mention -lgcc twice,
  90    or else we risk getting unresolved externals.  */
  91 #undef LIB_STANDARD
  92 #define LIB_STANDARD -lgcc -lc -lgcc /usr/lib64/crtn.o
  93 #endif
  94
  95 #ifndef _LP64
  96 #define _LP64                   /* Done on Alpha -- not sure if it
  97                                    should be here.  -- fx */
  98 #endif
  99 #endif
 100
 101 /* arch-tag: 0a6f7882-33fd-4811-9832-7466c51e50f7
 102    (do not change this comment) */