src/m/ibms390x.h

   1 /* machine description file for IBM S390 in 64-bit mode
   2
   3 Copyright (C) 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010
   4   Free Software Foundation, Inc.
   5
   6 This file is part of GNU Emacs.
   7
   8 GNU Emacs is free software: you can redistribute it and/or modify
   9 it under the terms of the GNU General Public License as published by
  10 the Free Software Foundation, either version 3 of the License, or
  11 (at your option) any later version.
  12
  13 GNU Emacs is distributed in the hope that it will be useful,
  14 but WITHOUT ANY WARRANTY; without even the implied warranty of
  15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16 GNU General Public License for more details.
  17
  18 You should have received a copy of the GNU General Public License
  19 along with GNU Emacs.  If not, see <http://www.gnu.org/licenses/>.  */
  20
  21 /* This file was made by copying the significant parts of amdx86-64.h
  22    into ibms390.h.  */
  23
  24 /* Used for machine IBM s390 64 bits with opsys gnu-linux.  */
  25 #define BITS_PER_LONG 64
  26 #define BITS_PER_EMACS_INT 64
  27
  28 /* Define WORDS_BIG_ENDIAN if lowest-numbered byte in a word
  29    is the most significant byte.  */
  30 #define WORDS_BIG_ENDIAN
  31
  32 /* Define the type to use.  */
  33 #define EMACS_INT long
  34 #define EMACS_UINT unsigned long
  35
  36 /* Define EXPLICIT_SIGN_EXTEND if XINT must explicitly sign-extend
  37    the 24-bit bit field into an int.  In other words, if bit fields
  38    are always unsigned.
  39
  40    This flag only matters if you use USE_LISP_UNION_TYPE.  */
  41 #undef EXPLICIT_SIGN_EXTEND
  42
  43 /* Data type of load average, as read out of kmem.  */
  44 #define LOAD_AVE_TYPE long
  45
  46 /* Convert that into an integer that is 100 for a load average of 1.0  */
  47 #define LOAD_AVE_CVT(x) (int) (((double) (x)) * 100.0 / FSCALE)
  48
  49 /* Define VIRT_ADDR_VARIES if the virtual addresses of
  50    pure and impure space as loaded can vary, and even their
  51    relative order cannot be relied on.
  52
  53    Otherwise Emacs assumes that text space precedes data space,
  54    numerically.  */
  55 #define VIRT_ADDR_VARIES
  56
  57 /* Define HAVE_ALLOCA to say that the system provides a properly
  58    working alloca function and it should be used.  Undefine it if an
  59    assembler-language alloca in the file alloca.s should be used. */
  60 #define HAVE_ALLOCA
  61
  62 /* On the 64 bit architecture, we can use 60 bits for addresses */
  63 #define VALBITS         60
  64
  65 /* Define XPNTR to avoid or'ing with DATA_SEG_BITS */
  66 #define XPNTR(a) XUINT (a)
  67
  68 /* arch-tag: 4b87653c-6add-4663-8691-7d9dc17b5519
  69    (do not change this comment) */