gcc/ada/targtyps.c

   1 /****************************************************************************
   2  *                                                                          *
   3  *                         GNAT COMPILER COMPONENTS                         *
   4  *                                                                          *
   5  *                            T A R G T Y P S                               *
   6  *                                                                          *
   7  *                                  Body                                    *
   8  *                                                                          *
   9  *                                                                          *
  10  *          Copyright (C) 1992-2001 Free Software Foundation, Inc.          *
  11  *                                                                          *
  12  * GNAT is free software;  you can  redistribute it  and/or modify it under *
  13  * terms of the  GNU General Public License as published  by the Free Soft- *
  14  * ware  Foundation;  either version 2,  or (at your option) any later ver- *
  15  * sion.  GNAT is distributed in the hope that it will be useful, but WITH- *
  16  * OUT ANY WARRANTY;  without even the  implied warranty of MERCHANTABILITY *
  17  * or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License *
  18  * for  more details.  You should have  received  a copy of the GNU General *
  19  * Public License  distributed with GNAT;  see file COPYING.  If not, write *
  20  * to  the Free Software Foundation,  59 Temple Place - Suite 330,  Boston, *
  21  * MA 02111-1307, USA.                                                      *
  22  *                                                                          *
  23  * As a  special  exception,  if you  link  this file  with other  files to *
  24  * produce an executable,  this file does not by itself cause the resulting *
  25  * executable to be covered by the GNU General Public License. This except- *
  26  * ion does not  however invalidate  any other reasons  why the  executable *
  27  * file might be covered by the  GNU Public License.                        *
  28  *                                                                          *
  29  * GNAT was originally developed  by the GNAT team at  New York University. *
  30  * Extensive contributions were provided by Ada Core Technologies Inc.      *
  31  *                                                                          *
  32  ****************************************************************************/
  33
  34 /* Functions for retrieving target types. See Ada package Get_Targ */
  35
  36 #include "config.h"
  37 #include "system.h"
  38 #include "tree.h"
  39 #include "real.h"
  40 #include "rtl.h"
  41 #include "ada.h"
  42 #include "types.h"
  43 #include "atree.h"
  44 #include "elists.h"
  45 #include "namet.h"
  46 #include "nlists.h"
  47 #include "snames.h"
  48 #include "stringt.h"
  49 #include "uintp.h"
  50 #include "urealp.h"
  51 #include "fe.h"
  52 #include "sinfo.h"
  53 #include "einfo.h"
  54 #include "ada-tree.h"
  55 #include "gigi.h"
  56
  57 /* If we don't have a specific size for Ada's equivalent of `long', use that
  58    of C.  */
  59 #ifndef ADA_LONG_TYPE_SIZE
  60 #define ADA_LONG_TYPE_SIZE LONG_TYPE_SIZE
  61 #endif
  62
  63 #ifndef WIDEST_HARDWARE_FP_SIZE
  64 #define WIDEST_HARDWARE_FP_SIZE LONG_DOUBLE_TYPE_SIZE
  65 #endif
  66
  67 /* The following provide a functional interface for the front end Ada code
  68    to determine the sizes that are used for various C types. */
  69
  70 Pos
  71 get_target_bits_per_unit ()
  72 {
  73   return BITS_PER_UNIT;
  74 }
  75
  76 Pos
  77 get_target_bits_per_word ()
  78 {
  79   return BITS_PER_WORD;
  80 }
  81
  82 Pos
  83 get_target_char_size ()
  84 {
  85   return CHAR_TYPE_SIZE;
  86 }
  87
  88 Pos
  89 get_target_wchar_t_size ()
  90 {
  91   /* We never want wide chacters less than "short" in Ada.  */
  92   return MAX (SHORT_TYPE_SIZE, WCHAR_TYPE_SIZE);
  93 }
  94
  95 Pos
  96 get_target_short_size ()
  97 {
  98   return SHORT_TYPE_SIZE;
  99 }
 100
 101 Pos
 102 get_target_int_size ()
 103 {
 104   return INT_TYPE_SIZE;
 105 }
 106
 107 Pos
 108 get_target_long_size ()
 109 {
 110   return ADA_LONG_TYPE_SIZE;
 111 }
 112
 113 Pos
 114 get_target_long_long_size ()
 115 {
 116   return LONG_LONG_TYPE_SIZE;
 117 }
 118
 119 Pos
 120 get_target_float_size ()
 121 {
 122   return FLOAT_TYPE_SIZE;
 123 }
 124
 125 Pos
 126 get_target_double_size ()
 127 {
 128   return DOUBLE_TYPE_SIZE;
 129 }
 130
 131 Pos
 132 get_target_long_double_size ()
 133 {
 134   return WIDEST_HARDWARE_FP_SIZE;
 135 }
 136
 137 Pos
 138 get_target_pointer_size ()
 139 {
 140   return POINTER_SIZE;
 141 }
 142
 143 Pos
 144 get_target_maximum_alignment ()
 145 {
 146   return BIGGEST_ALIGNMENT / BITS_PER_UNIT;
 147 }
 148
 149 Boolean
 150 get_target_no_dollar_in_label ()
 151 {
 152 #ifdef NO_DOLLAR_IN_LABEL
 153   return 1;
 154 #else
 155   return 0;
 156 #endif
 157 }
 158
 159 #ifndef FLOAT_WORDS_BIG_ENDIAN
 160 #define FLOAT_WORDS_BIG_ENDIAN WORDS_BIG_ENDIAN
 161 #endif
 162
 163 Nat
 164 get_float_words_be ()
 165 {
 166   return FLOAT_WORDS_BIG_ENDIAN;
 167 }
 168
 169 Nat
 170 get_words_be ()
 171 {
 172   return WORDS_BIG_ENDIAN;
 173 }
 174
 175 Nat
 176 get_bytes_be ()
 177 {
 178   return BYTES_BIG_ENDIAN;
 179 }
 180
 181 Nat
 182 get_bits_be ()
 183 {
 184   return BITS_BIG_ENDIAN;
 185 }
 186
 187 Nat
 188 get_strict_alignment ()
 189 {
 190   return STRICT_ALIGNMENT;
 191 }