gnu/dist/gcc4/gcc/config/pa/pa-64.h

   1 /* Definitions of target machine for GNU compiler, for HPs using the
   2    64bit runtime model.
   3    Copyright (C) 1999, 2000, 2003, 2004 Free Software Foundation, Inc.
   4
   5 This file is part of GCC.
   6
   7 GCC 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 2, or (at your option)
  10 any later version.
  11
  12 GCC 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 GCC; see the file COPYING.  If not, write to
  19 the Free Software Foundation, 51 Franklin Street, Fifth Floor,
  20 Boston, MA 02110-1301, USA.  */
  21
  22 /* The default sizes for basic datatypes provided by GCC are not
  23    correct for the PA64 runtime architecture.
  24
  25    In PA64, basic types have the following sizes
  26
  27      char       1 byte
  28      short      2 bytes
  29      int        4 bytes
  30      long       8 bytes
  31      long long  8 bytes
  32      pointer    8 bytes
  33      float      4 bytes
  34      double     8 bytes
  35      long double 16 bytes
  36      size_t     8 bytes
  37      ptrdiff_t  8 bytes
  38      wchar      4 bytes
  39
  40   Make GCC agree with types.h.  */
  41 #undef SIZE_TYPE
  42 #define SIZE_TYPE "long unsigned int"
  43
  44 #undef PTRDIFF_TYPE
  45 #define PTRDIFF_TYPE "long int"
  46
  47 #undef WCHAR_TYPE
  48 #define WCHAR_TYPE "unsigned int"
  49
  50 #undef WCHAR_TYPE_SIZE
  51 #define WCHAR_TYPE_SIZE 32
  52
  53 /* If it is not listed here, then the default selected by GCC is OK.  */
  54 #undef SHORT_TYPE_SIZE
  55 #define SHORT_TYPE_SIZE 16
  56 #undef INT_TYPE_SIZE
  57 #define INT_TYPE_SIZE 32
  58 #undef LONG_TYPE_SIZE
  59 #define LONG_TYPE_SIZE 64
  60 #undef LONG_LONG_TYPE_SIZE
  61 #define LONG_LONG_TYPE_SIZE 64
  62 #undef FLOAT_TYPE_SIZE
  63 #define FLOAT_TYPE_SIZE 32
  64 #undef DOUBLE_TYPE_SIZE
  65 #define DOUBLE_TYPE_SIZE 64
  66 #undef LONG_DOUBLE_TYPE_SIZE
  67 #define LONG_DOUBLE_TYPE_SIZE 128
  68
  69 /* Temporary until we figure out what to do with those *(&@$ 32bit
  70    relocs which appear in stabs.  */
  71 #undef DBX_DEBUGGING_INFO
  72
  73 /* ?!? This needs to be made compile-time selectable.
  74
  75    The PA64 runtime model has arguments that grow to higher addresses
  76    (like most other targets).  The older runtime model has arguments
  77    that grow to lower addresses.  What fun.  */
  78 #undef ARGS_GROW_DOWNWARD
  79
  80 /* If defined, a C expression which determines whether the default
  81    implementation of va_arg will attempt to pad down before reading the
  82    next argument, if that argument is smaller than its aligned space as
  83    controlled by PARM_BOUNDARY.  If this macro is not defined, all such
  84    arguments are padded down when BYTES_BIG_ENDIAN is true.  We don't
  85    want aggregates padded down.  */
  86
  87 #define PAD_VARARGS_DOWN (!AGGREGATE_TYPE_P (type))