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  *          Copyright (C) 1992-2004 Free Software Foundation, Inc.          *
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  11  * GNAT is free software;  you can  redistribute it  and/or modify it under *
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  14  * sion.  GNAT is distributed in the hope that it will be useful, but WITH- *
  15  * OUT ANY WARRANTY;  without even the  implied warranty of MERCHANTABILITY *
  16  * or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License *
  17  * for  more details.  You should have  received  a copy of the GNU General *
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  20  * MA 02111-1307, USA.                                                      *
  21  *                                                                          *
  22  * As a  special  exception,  if you  link  this file  with other  files to *
  23  * produce an executable,  this file does not by itself cause the resulting *
  24  * executable to be covered by the GNU General Public License. This except- *
  25  * ion does not  however invalidate  any other reasons  why the  executable *
  26  * file might be covered by the  GNU Public License.                        *
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  28  * GNAT was originally developed  by the GNAT team at  New York University. *
  29  * Extensive contributions were provided by Ada Core Technologies Inc.      *
  30  *                                                                          *
  31  ****************************************************************************/
  32
  33 /* Functions for retrieving target types. See Ada package Get_Targ */
  34
  35 #include "config.h"
  36 #include "system.h"
  37 #include "coretypes.h"
  38 #include "tm.h"
  39 #include "tree.h"
  40 #include "real.h"
  41 #include "rtl.h"
  42 #include "ada.h"
  43 #include "types.h"
  44 #include "atree.h"
  45 #include "elists.h"
  46 #include "namet.h"
  47 #include "nlists.h"
  48 #include "snames.h"
  49 #include "stringt.h"
  50 #include "uintp.h"
  51 #include "urealp.h"
  52 #include "fe.h"
  53 #include "sinfo.h"
  54 #include "einfo.h"
  55 #include "ada-tree.h"
  56 #include "gigi.h"
  57
  58 /* If we don't have a specific size for Ada's equivalent of `long', use that
  59    of C.  */
  60 #ifndef ADA_LONG_TYPE_SIZE
  61 #define ADA_LONG_TYPE_SIZE LONG_TYPE_SIZE
  62 #endif
  63
  64 #ifndef WIDEST_HARDWARE_FP_SIZE
  65 #define WIDEST_HARDWARE_FP_SIZE LONG_DOUBLE_TYPE_SIZE
  66 #endif
  67
  68 /* The following provide a functional interface for the front end Ada code
  69    to determine the sizes that are used for various C types. */
  70
  71 Pos
  72 get_target_bits_per_unit (void)
  73 {
  74   return BITS_PER_UNIT;
  75 }
  76
  77 Pos
  78 get_target_bits_per_word (void)
  79 {
  80   return BITS_PER_WORD;
  81 }
  82
  83 Pos
  84 get_target_char_size (void)
  85 {
  86   return CHAR_TYPE_SIZE;
  87 }
  88
  89 Pos
  90 get_target_wchar_t_size (void)
  91 {
  92   /* We never want wide chacters less than "short" in Ada.  */
  93   return MAX (SHORT_TYPE_SIZE, WCHAR_TYPE_SIZE);
  94 }
  95
  96 Pos
  97 get_target_short_size (void)
  98 {
  99   return SHORT_TYPE_SIZE;
 100 }
 101
 102 Pos
 103 get_target_int_size (void)
 104 {
 105   return INT_TYPE_SIZE;
 106 }
 107
 108 Pos
 109 get_target_long_size (void)
 110 {
 111   return ADA_LONG_TYPE_SIZE;
 112 }
 113
 114 Pos
 115 get_target_long_long_size (void)
 116 {
 117   return LONG_LONG_TYPE_SIZE;
 118 }
 119
 120 Pos
 121 get_target_float_size (void)
 122 {
 123   return fp_prec_to_size (FLOAT_TYPE_SIZE);
 124 }
 125
 126 Pos
 127 get_target_double_size (void)
 128 {
 129   return fp_prec_to_size (DOUBLE_TYPE_SIZE);
 130 }
 131
 132 Pos
 133 get_target_long_double_size (void)
 134 {
 135   return fp_prec_to_size (WIDEST_HARDWARE_FP_SIZE);
 136 }
 137
 138
 139 Pos
 140 get_target_pointer_size (void)
 141 {
 142   return POINTER_SIZE;
 143 }
 144
 145 Pos
 146 get_target_maximum_alignment (void)
 147 {
 148   return BIGGEST_ALIGNMENT / BITS_PER_UNIT;
 149 }
 150
 151 #ifndef FLOAT_WORDS_BIG_ENDIAN
 152 #define FLOAT_WORDS_BIG_ENDIAN WORDS_BIG_ENDIAN
 153 #endif
 154
 155 Nat
 156 get_float_words_be (void)
 157 {
 158   return FLOAT_WORDS_BIG_ENDIAN;
 159 }
 160
 161 Nat
 162 get_words_be (void)
 163 {
 164   return WORDS_BIG_ENDIAN;
 165 }
 166
 167 Nat
 168 get_bytes_be (void)
 169 {
 170   return BYTES_BIG_ENDIAN;
 171 }
 172
 173 Nat
 174 get_bits_be (void)
 175 {
 176   return BITS_BIG_ENDIAN;
 177 }
 178
 179 Nat
 180 get_strict_alignment (void)
 181 {
 182   return STRICT_ALIGNMENT;
 183 }