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1 ------------------------------------------------------------------------------
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2 -- --
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3 -- GNAT COMPILER COMPONENTS --
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4 -- --
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5 -- G E T _ T A R G --
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6 -- --
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7 -- B o d y --
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8 -- --
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9 -- Copyright (C) 1992-2015, Free Software Foundation, Inc. --
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10 -- --
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11 -- GNAT is free software; you can redistribute it and/or modify it under --
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12 -- terms of the GNU General Public License as published by the Free Soft- --
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13 -- ware Foundation; either version 3, or (at your option) any later ver- --
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14 -- sion. GNAT is distributed in the hope that it will be useful, but WITH- --
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15 -- OUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY --
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16 -- or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License --
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17 -- for more details. You should have received a copy of the GNU General --
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18 -- Public License distributed with GNAT; see file COPYING3. If not, go to --
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19 -- http://www.gnu.org/licenses for a complete copy of the license. --
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20 -- --
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21 -- GNAT was originally developed by the GNAT team at New York University. --
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22 -- Extensive contributions were provided by Ada Core Technologies Inc. --
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23 -- --
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24 ------------------------------------------------------------------------------
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25
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26 -- Version for use with GCC
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27
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28 package body Get_Targ is
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29
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30 -- Functions returning individual run-time values. For the standard (GCC)
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31 -- back end, these come from C interface functions (one for each value).
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32
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33 -----------------------
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34 -- Get_Bits_Per_Unit --
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35 -----------------------
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36
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37 function Get_Bits_Per_Unit return Pos is
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38 function C_Get_Bits_Per_Unit return Pos;
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39 pragma Import (C, C_Get_Bits_Per_Unit,
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40 "get_target_bits_per_unit");
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41 begin
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42 return C_Get_Bits_Per_Unit;
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43 end Get_Bits_Per_Unit;
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44
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45 -----------------------
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46 -- Get_Bits_Per_Word --
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47 -----------------------
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48
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49 function Get_Bits_Per_Word return Pos is
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50 function C_Get_Bits_Per_Word return Pos;
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51 pragma Import (C, C_Get_Bits_Per_Word,
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52 "get_target_bits_per_word");
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53 begin
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54 return C_Get_Bits_Per_Word;
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55 end Get_Bits_Per_Word;
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56
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57 -------------------
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58 -- Get_Char_Size --
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59 -------------------
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60
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61 function Get_Char_Size return Pos is
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62 function C_Get_Char_Size return Pos;
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63 pragma Import (C, C_Get_Char_Size,
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64 "get_target_char_size");
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65 begin
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66 return C_Get_Char_Size;
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67 end Get_Char_Size;
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68
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69 ----------------------
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70 -- Get_Wchar_T_Size --
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71 ----------------------
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72
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73 function Get_Wchar_T_Size return Pos is
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74 function C_Get_Wchar_T_Size return Pos;
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75 pragma Import (C, C_Get_Wchar_T_Size,
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76 "get_target_wchar_t_size");
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77 begin
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78 return C_Get_Wchar_T_Size;
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79 end Get_Wchar_T_Size;
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80
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81 --------------------
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82 -- Get_Short_Size --
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83 --------------------
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84
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85 function Get_Short_Size return Pos is
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86 function C_Get_Short_Size return Pos;
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87 pragma Import (C, C_Get_Short_Size,
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88 "get_target_short_size");
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89 begin
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90 return C_Get_Short_Size;
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91 end Get_Short_Size;
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92
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93 ------------------
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94 -- Get_Int_Size --
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95 ------------------
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96
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97 function Get_Int_Size return Pos is
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98 function C_Get_Int_Size return Pos;
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99 pragma Import (C, C_Get_Int_Size,
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100 "get_target_int_size");
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101 begin
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102 return C_Get_Int_Size;
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103 end Get_Int_Size;
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104
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105 -------------------
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106 -- Get_Long_Size --
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107 -------------------
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108
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109 function Get_Long_Size return Pos is
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110 function C_Get_Long_Size return Pos;
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111 pragma Import (C, C_Get_Long_Size,
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112 "get_target_long_size");
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113 begin
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114 return C_Get_Long_Size;
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115 end Get_Long_Size;
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116
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117 ------------------------
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118 -- Get_Long_Long_Size --
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119 ------------------------
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120
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121 function Get_Long_Long_Size return Pos is
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122 function C_Get_Long_Long_Size return Pos;
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123 pragma Import (C, C_Get_Long_Long_Size,
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124 "get_target_long_long_size");
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125 begin
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126 return C_Get_Long_Long_Size;
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127 end Get_Long_Long_Size;
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128
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129 ----------------------
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130 -- Get_Pointer_Size --
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131 ----------------------
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132
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133 function Get_Pointer_Size return Pos is
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134 function C_Get_Pointer_Size return Pos;
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135 pragma Import (C, C_Get_Pointer_Size,
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136 "get_target_pointer_size");
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137 begin
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138 return C_Get_Pointer_Size;
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139 end Get_Pointer_Size;
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140
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141 ---------------------------
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142 -- Get_Maximum_Alignment --
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143 ---------------------------
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144
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145 function Get_Maximum_Alignment return Pos is
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146 function C_Get_Maximum_Alignment return Pos;
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147 pragma Import (C, C_Get_Maximum_Alignment,
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148 "get_target_maximum_alignment");
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149 begin
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150 return C_Get_Maximum_Alignment;
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151 end Get_Maximum_Alignment;
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152
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153 ------------------------
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154 -- Get_Float_Words_BE --
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155 ------------------------
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156
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157 function Get_Float_Words_BE return Nat is
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158 function C_Get_Float_Words_BE return Nat;
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159 pragma Import (C, C_Get_Float_Words_BE,
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160 "get_target_float_words_be");
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161 begin
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162 return C_Get_Float_Words_BE;
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163 end Get_Float_Words_BE;
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164
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165 ------------------
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166 -- Get_Words_BE --
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167 ------------------
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168
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169 function Get_Words_BE return Nat is
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170 function C_Get_Words_BE return Nat;
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171 pragma Import (C, C_Get_Words_BE,
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172 "get_target_words_be");
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173 begin
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174 return C_Get_Words_BE;
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175 end Get_Words_BE;
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176
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177 ------------------
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178 -- Get_Bytes_BE --
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179 ------------------
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180
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181 function Get_Bytes_BE return Nat is
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182 function C_Get_Bytes_BE return Nat;
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183 pragma Import (C, C_Get_Bytes_BE,
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184 "get_target_bytes_be");
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185 begin
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186 return C_Get_Bytes_BE;
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187 end Get_Bytes_BE;
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188
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189 -----------------
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190 -- Get_Bits_BE --
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191 -----------------
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192
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193 function Get_Bits_BE return Nat is
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194 function C_Get_Bits_BE return Nat;
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195 pragma Import (C, C_Get_Bits_BE,
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196 "get_target_bits_be");
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197 begin
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198 return C_Get_Bits_BE;
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199 end Get_Bits_BE;
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200
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201 ---------------------
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202 -- Get_Short_Enums --
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203 ---------------------
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204
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205 function Get_Short_Enums return Int is
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206 flag_short_enums : Int;
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207 pragma Import (C, flag_short_enums);
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208 begin
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209 return flag_short_enums;
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210 end Get_Short_Enums;
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211
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212 --------------------------
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213 -- Get_Strict_Alignment --
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214 --------------------------
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215
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216 function Get_Strict_Alignment return Nat is
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217 function C_Get_Strict_Alignment return Nat;
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218 pragma Import (C, C_Get_Strict_Alignment,
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219 "get_target_strict_alignment");
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220 begin
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221 return C_Get_Strict_Alignment;
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222 end Get_Strict_Alignment;
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223
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224 ------------------------------------
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225 -- Get_System_Allocator_Alignment --
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226 ------------------------------------
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227
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228 function Get_System_Allocator_Alignment return Nat is
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229 function C_Get_System_Allocator_Alignment return Nat;
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230 pragma Import (C, C_Get_System_Allocator_Alignment,
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231 "get_target_system_allocator_alignment");
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232 begin
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233 return C_Get_System_Allocator_Alignment;
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234 end Get_System_Allocator_Alignment;
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235
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236 --------------------------------
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237 -- Get_Double_Float_Alignment --
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238 --------------------------------
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239
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240 function Get_Double_Float_Alignment return Nat is
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241 function C_Get_Double_Float_Alignment return Nat;
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242 pragma Import (C, C_Get_Double_Float_Alignment,
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243 "get_target_double_float_alignment");
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244 begin
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245 return C_Get_Double_Float_Alignment;
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246 end Get_Double_Float_Alignment;
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247
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248 ---------------------------------
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249 -- Get_Double_Scalar_Alignment --
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250 ---------------------------------
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251
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252 function Get_Double_Scalar_Alignment return Nat is
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253 function C_Get_Double_Scalar_Alignment return Nat;
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254 pragma Import (C, C_Get_Double_Scalar_Alignment,
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255 "get_target_double_scalar_alignment");
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256 begin
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257 return C_Get_Double_Scalar_Alignment;
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258 end Get_Double_Scalar_Alignment;
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259
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260 ------------------------------
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261 -- Get_Back_End_Config_File --
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262 ------------------------------
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263
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264 function Get_Back_End_Config_File return String_Ptr is
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265 begin
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266 return null;
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267 end Get_Back_End_Config_File;
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268
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269 ----------------------
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270 -- Digits_From_Size --
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271 ----------------------
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272
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273 function Digits_From_Size (Size : Pos) return Pos is
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274 begin
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275 case Size is
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276 when 32 => return 6;
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277 when 48 => return 9;
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278 when 64 => return 15;
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279 when 96 => return 18;
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280 when 128 => return 18;
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281 when others => raise Program_Error;
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282 end case;
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283 end Digits_From_Size;
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284
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285 -----------------------------
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286 -- Get_Max_Unaligned_Field --
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287 -----------------------------
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288
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289 function Get_Max_Unaligned_Field return Pos is
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290 begin
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291 return 64; -- Can be different on some targets (e.g., AAMP)
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292 end Get_Max_Unaligned_Field;
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293
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294 -----------------------------
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295 -- Register_Back_End_Types --
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296 -----------------------------
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297
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298 procedure Register_Back_End_Types (Call_Back : Register_Type_Proc) is
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299 procedure Enumerate_Modes (Call_Back : Register_Type_Proc);
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300 pragma Import (C, Enumerate_Modes, "enumerate_modes");
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301 begin
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302 Enumerate_Modes (Call_Back);
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303 end Register_Back_End_Types;
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304
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305 ---------------------
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306 -- Width_From_Size --
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307 ---------------------
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308
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309 function Width_From_Size (Size : Pos) return Pos is
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310 begin
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311 case Size is
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312 when 8 => return 4;
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313 when 16 => return 6;
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314 when 32 => return 11;
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315 when 64 => return 21;
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316 when others => raise Program_Error;
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317 end case;
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318 end Width_From_Size;
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319
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320 end Get_Targ;
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