gcc/ada/opt.adb

   1 ------------------------------------------------------------------------------
   2 --                                                                          --
   3 --                         GNAT COMPILER COMPONENTS                         --
   4 --                                                                          --
   5 --                                  O P T                                   --
   6 --                                                                          --
   7 --                                 B o d y                                  --
   8 --                                                                          --
   9 --          Copyright (C) 1992-2005, Free Software Foundation, Inc.         --
  10 --                                                                          --
  11 -- GNAT is free software;  you can  redistribute it  and/or modify it under --
  12 -- terms of the  GNU General Public License as published  by the Free Soft- --
  13 -- ware  Foundation;  either version 2,  or (at your option) any later ver- --
  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 --
  18 -- Public License  distributed with GNAT;  see file COPYING.  If not, write --
  19 -- to  the Free Software Foundation,  59 Temple Place - Suite 330,  Boston, --
  20 -- MA 02111-1307, USA.                                                      --
  21 --                                                                          --
  22 -- As a special exception,  if other files  instantiate  generics from this --
  23 -- unit, or you link  this unit with other files  to produce an executable, --
  24 -- this  unit  does not  by itself cause  the resulting  executable  to  be --
  25 -- covered  by the  GNU  General  Public  License.  This exception does not --
  26 -- however invalidate  any other reasons why  the executable file  might be --
  27 -- 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 with Gnatvsn; use Gnatvsn;
  35 with System;  use System;
  36 with Tree_IO; use Tree_IO;
  37
  38 package body Opt is
  39
  40    Immediate_Errors : Boolean := True;
  41    --  This is an obsolete flag that is no longer present in opt.ads. We
  42    --  retain it here because this flag was written to the tree and there
  43    --  is no point in making trees incomaptible just for the sake of saving
  44    --  one byte of data. The value written is ignored.
  45
  46    ----------------------------------
  47    -- Register_Opt_Config_Switches --
  48    ----------------------------------
  49
  50    procedure Register_Opt_Config_Switches is
  51    begin
  52       Ada_Version_Config                    := Ada_Version;
  53       Ada_Version_Explicit_Config           := Ada_Version_Explicit;
  54       Assertions_Enabled_Config             := Assertions_Enabled;
  55       Dynamic_Elaboration_Checks_Config     := Dynamic_Elaboration_Checks;
  56       Exception_Locations_Suppressed_Config := Exception_Locations_Suppressed;
  57       Extensions_Allowed_Config             := Extensions_Allowed;
  58       External_Name_Exp_Casing_Config       := External_Name_Exp_Casing;
  59       External_Name_Imp_Casing_Config       := External_Name_Imp_Casing;
  60       Persistent_BSS_Mode_Config            := Persistent_BSS_Mode;
  61       Polling_Required_Config               := Polling_Required;
  62       Use_VADS_Size_Config                  := Use_VADS_Size;
  63    end Register_Opt_Config_Switches;
  64
  65    ---------------------------------
  66    -- Restore_Opt_Config_Switches --
  67    ---------------------------------
  68
  69    procedure Restore_Opt_Config_Switches (Save : Config_Switches_Type) is
  70    begin
  71       Ada_Version                    := Save.Ada_Version;
  72       Ada_Version_Explicit           := Save.Ada_Version_Explicit;
  73       Assertions_Enabled             := Save.Assertions_Enabled;
  74       Dynamic_Elaboration_Checks     := Save.Dynamic_Elaboration_Checks;
  75       Exception_Locations_Suppressed := Save.Exception_Locations_Suppressed;
  76       Extensions_Allowed             := Save.Extensions_Allowed;
  77       External_Name_Exp_Casing       := Save.External_Name_Exp_Casing;
  78       External_Name_Imp_Casing       := Save.External_Name_Imp_Casing;
  79       Persistent_BSS_Mode            := Save.Persistent_BSS_Mode;
  80       Polling_Required               := Save.Polling_Required;
  81       Use_VADS_Size                  := Save.Use_VADS_Size;
  82    end Restore_Opt_Config_Switches;
  83
  84    ------------------------------
  85    -- Save_Opt_Config_Switches --
  86    ------------------------------
  87
  88    procedure Save_Opt_Config_Switches (Save : out Config_Switches_Type) is
  89    begin
  90       Save.Ada_Version                    := Ada_Version;
  91       Save.Ada_Version_Explicit           := Ada_Version_Explicit;
  92       Save.Assertions_Enabled             := Assertions_Enabled;
  93       Save.Dynamic_Elaboration_Checks     := Dynamic_Elaboration_Checks;
  94       Save.Exception_Locations_Suppressed := Exception_Locations_Suppressed;
  95       Save.Extensions_Allowed             := Extensions_Allowed;
  96       Save.External_Name_Exp_Casing       := External_Name_Exp_Casing;
  97       Save.External_Name_Imp_Casing       := External_Name_Imp_Casing;
  98       Save.Persistent_BSS_Mode            := Persistent_BSS_Mode;
  99       Save.Polling_Required               := Polling_Required;
 100       Save.Use_VADS_Size                  := Use_VADS_Size;
 101    end Save_Opt_Config_Switches;
 102
 103    -----------------------------
 104    -- Set_Opt_Config_Switches --
 105    -----------------------------
 106
 107    procedure Set_Opt_Config_Switches (Internal_Unit : Boolean) is
 108    begin
 109       if Internal_Unit then
 110          Ada_Version                := Ada_Version_Runtime;
 111          Assertions_Enabled         := False;
 112          Dynamic_Elaboration_Checks := False;
 113          Extensions_Allowed         := True;
 114          External_Name_Exp_Casing   := As_Is;
 115          External_Name_Imp_Casing   := Lowercase;
 116          Persistent_BSS_Mode        := False;
 117          Use_VADS_Size              := False;
 118
 119       else
 120          Ada_Version                := Ada_Version_Config;
 121          Assertions_Enabled         := Assertions_Enabled_Config;
 122          Dynamic_Elaboration_Checks := Dynamic_Elaboration_Checks_Config;
 123          Extensions_Allowed         := Extensions_Allowed_Config;
 124          External_Name_Exp_Casing   := External_Name_Exp_Casing_Config;
 125          External_Name_Imp_Casing   := External_Name_Imp_Casing_Config;
 126          Persistent_BSS_Mode        := Persistent_BSS_Mode_Config;
 127          Use_VADS_Size              := Use_VADS_Size_Config;
 128       end if;
 129
 130       Exception_Locations_Suppressed := Exception_Locations_Suppressed_Config;
 131       Polling_Required               := Polling_Required_Config;
 132       Ada_Version_Explicit           := Ada_Version_Explicit_Config;
 133    end Set_Opt_Config_Switches;
 134
 135    ---------------
 136    -- Tree_Read --
 137    ---------------
 138
 139    procedure Tree_Read is
 140       Tree_Version_String_Len         : Nat;
 141       Ada_Version_Config_Val          : Nat;
 142       Ada_Version_Explicit_Config_Val : Nat;
 143       Assertions_Enabled_Config_Val   : Nat;
 144
 145    begin
 146       Tree_Read_Int  (Tree_ASIS_Version_Number);
 147       Tree_Read_Bool (Brief_Output);
 148       Tree_Read_Bool (GNAT_Mode);
 149       Tree_Read_Char (Identifier_Character_Set);
 150       Tree_Read_Int  (Maximum_File_Name_Length);
 151       Tree_Read_Data (Suppress_Options'Address,
 152                       Suppress_Array'Object_Size / Storage_Unit);
 153       Tree_Read_Bool (Verbose_Mode);
 154       Tree_Read_Data (Warning_Mode'Address,
 155                       Warning_Mode_Type'Object_Size / Storage_Unit);
 156       Tree_Read_Int  (Ada_Version_Config_Val);
 157       Tree_Read_Int  (Ada_Version_Explicit_Config_Val);
 158       Tree_Read_Int  (Assertions_Enabled_Config_Val);
 159       Tree_Read_Bool (All_Errors_Mode);
 160       Tree_Read_Bool (Assertions_Enabled);
 161       Tree_Read_Bool (Enable_Overflow_Checks);
 162       Tree_Read_Bool (Full_List);
 163
 164       Ada_Version_Config :=
 165         Ada_Version_Type'Val (Ada_Version_Config_Val);
 166       Ada_Version_Explicit_Config :=
 167         Ada_Version_Type'Val (Ada_Version_Explicit_Config_Val);
 168       Assertions_Enabled_Config :=
 169         Boolean'Val (Assertions_Enabled_Config_Val);
 170
 171       --  Read version string: we have to check the length first
 172
 173       Tree_Read_Int (Tree_Version_String_Len);
 174
 175       if Tree_Version_String_Len = Tree_Version_String'Length then
 176          Tree_Read_Data
 177            (Tree_Version_String'Address, Tree_Version_String_Len);
 178       else
 179          Tree_Version_String := (others => '?');
 180
 181          declare
 182             Tmp : String (1 .. Integer (Tree_Version_String_Len));
 183          begin
 184             Tree_Read_Data
 185               (Tmp'Address, Tree_Version_String_Len);
 186          end;
 187
 188       end if;
 189
 190       Tree_Read_Data (Distribution_Stub_Mode'Address,
 191                       Distribution_Stub_Mode_Type'Object_Size / Storage_Unit);
 192       Tree_Read_Bool (Immediate_Errors);
 193       Tree_Read_Bool (Inline_Active);
 194       Tree_Read_Bool (Inline_Processing_Required);
 195       Tree_Read_Bool (List_Units);
 196       Tree_Read_Bool (Configurable_Run_Time_Mode);
 197       Tree_Read_Data (Operating_Mode'Address,
 198                       Operating_Mode_Type'Object_Size / Storage_Unit);
 199       Tree_Read_Bool (Suppress_Checks);
 200       Tree_Read_Bool (Try_Semantics);
 201       Tree_Read_Data (Wide_Character_Encoding_Method'Address,
 202                       WC_Encoding_Method'Object_Size / Storage_Unit);
 203       Tree_Read_Bool (Upper_Half_Encoding);
 204       Tree_Read_Bool (Force_ALI_Tree_File);
 205    end Tree_Read;
 206
 207    ----------------
 208    -- Tree_Write --
 209    ----------------
 210
 211    procedure Tree_Write is
 212       Version_String : String := Gnat_Version_String;
 213    begin
 214       Tree_Write_Int  (ASIS_Version_Number);
 215       Tree_Write_Bool (Brief_Output);
 216       Tree_Write_Bool (GNAT_Mode);
 217       Tree_Write_Char (Identifier_Character_Set);
 218       Tree_Write_Int  (Maximum_File_Name_Length);
 219       Tree_Write_Data (Suppress_Options'Address,
 220                        Suppress_Array'Object_Size / Storage_Unit);
 221       Tree_Write_Bool (Verbose_Mode);
 222       Tree_Write_Data (Warning_Mode'Address,
 223                        Warning_Mode_Type'Object_Size / Storage_Unit);
 224       Tree_Write_Int  (Ada_Version_Type'Pos (Ada_Version_Config));
 225       Tree_Write_Int  (Ada_Version_Type'Pos (Ada_Version_Explicit_Config));
 226       Tree_Write_Int  (Boolean'Pos (Assertions_Enabled_Config));
 227       Tree_Write_Bool (All_Errors_Mode);
 228       Tree_Write_Bool (Assertions_Enabled);
 229       Tree_Write_Bool (Enable_Overflow_Checks);
 230       Tree_Write_Bool (Full_List);
 231       Tree_Write_Int  (Int (Version_String'Length));
 232       Tree_Write_Data (Version_String'Address,
 233                        Version_String'Length);
 234       Tree_Write_Data (Distribution_Stub_Mode'Address,
 235                        Distribution_Stub_Mode_Type'Object_Size / Storage_Unit);
 236       Tree_Write_Bool (Immediate_Errors);
 237       Tree_Write_Bool (Inline_Active);
 238       Tree_Write_Bool (Inline_Processing_Required);
 239       Tree_Write_Bool (List_Units);
 240       Tree_Write_Bool (Configurable_Run_Time_Mode);
 241       Tree_Write_Data (Operating_Mode'Address,
 242                        Operating_Mode_Type'Object_Size / Storage_Unit);
 243       Tree_Write_Bool (Suppress_Checks);
 244       Tree_Write_Bool (Try_Semantics);
 245       Tree_Write_Data (Wide_Character_Encoding_Method'Address,
 246                        WC_Encoding_Method'Object_Size / Storage_Unit);
 247       Tree_Write_Bool (Upper_Half_Encoding);
 248       Tree_Write_Bool (Force_ALI_Tree_File);
 249    end Tree_Write;
 250
 251 end Opt;