gcc/ada/targtyps.c

   1 /****************************************************************************
   2  *                                                                          *
   3  *                         GNAT COMPILER COMPONENTS                         *
   4  *                                                                          *
   5  *                            T A R G T Y P S                               *
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   7  *                                  Body                                    *
   8  *                                                                          *
   9  *                                                                          *
  10  *          Copyright (C) 1992-2001 Free Software Foundation, Inc.          *
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  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- *
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  15  * sion.  GNAT is distributed in the hope that it will be useful, but WITH- *
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  18  * for  more details.  You should have  received  a copy of the GNU General *
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  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 "coretypes.h"
  39 #include "tm.h"
  40 #include "tree.h"
  41 #include "real.h"
  42 #include "rtl.h"
  43 #include "ada.h"
  44 #include "types.h"
  45 #include "atree.h"
  46 #include "elists.h"
  47 #include "namet.h"
  48 #include "nlists.h"
  49 #include "snames.h"
  50 #include "stringt.h"
  51 #include "uintp.h"
  52 #include "urealp.h"
  53 #include "fe.h"
  54 #include "sinfo.h"
  55 #include "einfo.h"
  56 #include "ada-tree.h"
  57 #include "gigi.h"
  58
  59 /* If we don't have a specific size for Ada's equivalent of `long', use that
  60    of C.  */
  61 #ifndef ADA_LONG_TYPE_SIZE
  62 #define ADA_LONG_TYPE_SIZE LONG_TYPE_SIZE
  63 #endif
  64
  65 #ifndef WIDEST_HARDWARE_FP_SIZE
  66 #define WIDEST_HARDWARE_FP_SIZE LONG_DOUBLE_TYPE_SIZE
  67 #endif
  68
  69 /* The following provide a functional interface for the front end Ada code
  70    to determine the sizes that are used for various C types. */
  71
  72 Pos
  73 get_target_bits_per_unit ()
  74 {
  75   return BITS_PER_UNIT;
  76 }
  77
  78 Pos
  79 get_target_bits_per_word ()
  80 {
  81   return BITS_PER_WORD;
  82 }
  83
  84 Pos
  85 get_target_char_size ()
  86 {
  87   return CHAR_TYPE_SIZE;
  88 }
  89
  90 Pos
  91 get_target_wchar_t_size ()
  92 {
  93   /* We never want wide chacters less than "short" in Ada.  */
  94   return MAX (SHORT_TYPE_SIZE, WCHAR_TYPE_SIZE);
  95 }
  96
  97 Pos
  98 get_target_short_size ()
  99 {
 100   return SHORT_TYPE_SIZE;
 101 }
 102
 103 Pos
 104 get_target_int_size ()
 105 {
 106   return INT_TYPE_SIZE;
 107 }
 108
 109 Pos
 110 get_target_long_size ()
 111 {
 112   return ADA_LONG_TYPE_SIZE;
 113 }
 114
 115 Pos
 116 get_target_long_long_size ()
 117 {
 118   return LONG_LONG_TYPE_SIZE;
 119 }
 120
 121 Pos
 122 get_target_float_size ()
 123 {
 124   return FLOAT_TYPE_SIZE;
 125 }
 126
 127 Pos
 128 get_target_double_size ()
 129 {
 130   return DOUBLE_TYPE_SIZE;
 131 }
 132
 133 Pos
 134 get_target_long_double_size ()
 135 {
 136   return WIDEST_HARDWARE_FP_SIZE;
 137 }
 138
 139 Pos
 140 get_target_pointer_size ()
 141 {
 142   return POINTER_SIZE;
 143 }
 144
 145 Pos
 146 get_target_maximum_alignment ()
 147 {
 148   return BIGGEST_ALIGNMENT / BITS_PER_UNIT;
 149 }
 150
 151 Boolean
 152 get_target_no_dollar_in_label ()
 153 {
 154 #ifdef NO_DOLLAR_IN_LABEL
 155   return 1;
 156 #else
 157   return 0;
 158 #endif
 159 }
 160
 161 #ifndef FLOAT_WORDS_BIG_ENDIAN
 162 #define FLOAT_WORDS_BIG_ENDIAN WORDS_BIG_ENDIAN
 163 #endif
 164
 165 Nat
 166 get_float_words_be ()
 167 {
 168   return FLOAT_WORDS_BIG_ENDIAN;
 169 }
 170
 171 Nat
 172 get_words_be ()
 173 {
 174   return WORDS_BIG_ENDIAN;
 175 }
 176
 177 Nat
 178 get_bytes_be ()
 179 {
 180   return BYTES_BIG_ENDIAN;
 181 }
 182
 183 Nat
 184 get_bits_be ()
 185 {
 186   return BITS_BIG_ENDIAN;
 187 }
 188
 189 Nat
 190 get_strict_alignment ()
 191 {
 192   return STRICT_ALIGNMENT;
 193 }