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Diffstat (limited to 'gcc/ada/opt.adb')
| -rw-r--r-- | gcc/ada/opt.adb | 224 |
1 files changed, 224 insertions, 0 deletions
diff --git a/gcc/ada/opt.adb b/gcc/ada/opt.adb new file mode 100644 index 00000000000..933c8ec9403 --- /dev/null +++ b/gcc/ada/opt.adb @@ -0,0 +1,224 @@ +------------------------------------------------------------------------------ +-- -- +-- GNAT COMPILER COMPONENTS -- +-- -- +-- O P T -- +-- -- +-- B o d y -- +-- -- +-- $Revision: 1.29 $ +-- -- +-- Copyright (C) 1992-2000, Free Software Foundation, Inc. -- +-- -- +-- GNAT is free software; you can redistribute it and/or modify it under -- +-- terms of the GNU General Public License as published by the Free Soft- -- +-- ware Foundation; either version 2, or (at your option) any later ver- -- +-- sion. GNAT is distributed in the hope that it will be useful, but WITH- -- +-- OUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY -- +-- or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License -- +-- for more details. You should have received a copy of the GNU General -- +-- Public License distributed with GNAT; see file COPYING. If not, write -- +-- to the Free Software Foundation, 59 Temple Place - Suite 330, Boston, -- +-- MA 02111-1307, USA. -- +-- -- +-- As a special exception, if other files instantiate generics from this -- +-- unit, or you link this unit with other files to produce an executable, -- +-- this unit does not by itself cause the resulting executable to be -- +-- covered by the GNU General Public License. This exception does not -- +-- however invalidate any other reasons why the executable file might be -- +-- covered by the GNU Public License. -- +-- -- +-- GNAT was originally developed by the GNAT team at New York University. -- +-- It is now maintained by Ada Core Technologies Inc (http://www.gnat.com). -- +-- -- +------------------------------------------------------------------------------ + +with Ada.Exceptions; use Ada.Exceptions; +with Gnatvsn; use Gnatvsn; +with System; use System; +with Tree_IO; use Tree_IO; + +package body Opt is + + Tree_Version_String : String (Gnat_Version_String'Range); + -- Used to store the compiler version string read from a tree file to + -- check if it is the same as stored in the version ctring in Gnatvsn. + -- Therefore its length is taken directly from the version string in + -- Gnatvsn. If the length of the version string stored in the three is + -- different, then versions are for sure different. + + Immediate_Errors : Boolean := True; + -- This is an obsolete flag that is no longer present in opt.ads. We + -- retain it here because this flag was written to the tree and there + -- is no point in making trees incomaptible just for the sake of saving + -- one byte of data. The value written is ignored. + + ---------------------------------- + -- Register_Opt_Config_Switches -- + ---------------------------------- + + procedure Register_Opt_Config_Switches is + begin + Ada_83_Config := Ada_83; + Dynamic_Elaboration_Checks_Config := Dynamic_Elaboration_Checks; + Extensions_Allowed_Config := Extensions_Allowed; + External_Name_Exp_Casing_Config := External_Name_Exp_Casing; + External_Name_Imp_Casing_Config := External_Name_Imp_Casing; + Polling_Required_Config := Polling_Required; + Use_VADS_Size_Config := Use_VADS_Size; + end Register_Opt_Config_Switches; + + --------------------------------- + -- Restore_Opt_Config_Switches -- + --------------------------------- + + procedure Restore_Opt_Config_Switches (Save : Config_Switches_Type) is + begin + Ada_83 := Save.Ada_83; + Ada_95 := not Ada_83; + Dynamic_Elaboration_Checks := Save.Dynamic_Elaboration_Checks; + Extensions_Allowed := Save.Extensions_Allowed; + External_Name_Exp_Casing := Save.External_Name_Exp_Casing; + External_Name_Imp_Casing := Save.External_Name_Imp_Casing; + Polling_Required := Save.Polling_Required; + Use_VADS_Size := Save.Use_VADS_Size; + end Restore_Opt_Config_Switches; + + ------------------------------ + -- Save_Opt_Config_Switches -- + ------------------------------ + + procedure Save_Opt_Config_Switches (Save : out Config_Switches_Type) is + begin + Save.Ada_83 := Ada_83; + Save.Dynamic_Elaboration_Checks := Dynamic_Elaboration_Checks; + Save.Extensions_Allowed := Extensions_Allowed; + Save.External_Name_Exp_Casing := External_Name_Exp_Casing; + Save.External_Name_Imp_Casing := External_Name_Imp_Casing; + Save.Polling_Required := Polling_Required; + Save.Use_VADS_Size := Use_VADS_Size; + end Save_Opt_Config_Switches; + + ----------------------------- + -- Set_Opt_Config_Switches -- + ----------------------------- + + procedure Set_Opt_Config_Switches (Internal_Unit : Boolean) is + begin + if Internal_Unit then + Ada_83 := False; + Ada_95 := True; + Dynamic_Elaboration_Checks := False; + Extensions_Allowed := True; + External_Name_Exp_Casing := As_Is; + External_Name_Imp_Casing := Lowercase; + Use_VADS_Size := False; + + else + Ada_83 := Ada_83_Config; + Ada_95 := not Ada_83_Config; + Dynamic_Elaboration_Checks := Dynamic_Elaboration_Checks_Config; + Extensions_Allowed := Extensions_Allowed_Config; + External_Name_Exp_Casing := External_Name_Exp_Casing_Config; + External_Name_Imp_Casing := External_Name_Imp_Casing_Config; + Use_VADS_Size := Use_VADS_Size_Config; + end if; + + Polling_Required := Polling_Required_Config; + end Set_Opt_Config_Switches; + + --------------- + -- Tree_Read -- + --------------- + + procedure Tree_Read is + Tree_Version_String_Len : Nat; + + begin + Tree_Read_Bool (Brief_Output); + Tree_Read_Bool (GNAT_Mode); + Tree_Read_Char (Identifier_Character_Set); + Tree_Read_Int (Maximum_File_Name_Length); + Tree_Read_Data (Suppress_Options'Address, + Suppress_Record'Object_Size / Storage_Unit); + Tree_Read_Bool (Verbose_Mode); + Tree_Read_Data (Warning_Mode'Address, + Warning_Mode_Type'Object_Size / Storage_Unit); + Tree_Read_Bool (Ada_83_Config); + Tree_Read_Bool (All_Errors_Mode); + Tree_Read_Bool (Assertions_Enabled); + Tree_Read_Bool (Full_List); + + -- Read and check version string + + Tree_Read_Int (Tree_Version_String_Len); + + if Tree_Version_String_Len = Tree_Version_String'Length then + Tree_Read_Data + (Tree_Version_String'Address, Tree_Version_String'Length); + end if; + + if Tree_Version_String_Len /= Tree_Version_String'Length + or else Tree_Version_String /= Gnat_Version_String + then + Raise_Exception + (Program_Error'Identity, "Inconsistent versions of GNAT and ASIS"); + end if; + + Tree_Read_Data (Distribution_Stub_Mode'Address, + Distribution_Stub_Mode_Type'Object_Size / Storage_Unit); + Tree_Read_Bool (Immediate_Errors); + Tree_Read_Bool (Inline_Active); + Tree_Read_Bool (Inline_Processing_Required); + Tree_Read_Bool (List_Units); + Tree_Read_Bool (No_Run_Time); + Tree_Read_Data (Operating_Mode'Address, + Operating_Mode_Type'Object_Size / Storage_Unit); + Tree_Read_Bool (Software_Overflow_Checking); + Tree_Read_Bool (Try_Semantics); + Tree_Read_Data (Wide_Character_Encoding_Method'Address, + WC_Encoding_Method'Object_Size / Storage_Unit); + Tree_Read_Bool (Upper_Half_Encoding); + Tree_Read_Bool (Force_ALI_Tree_File); + end Tree_Read; + + ---------------- + -- Tree_Write -- + ---------------- + + procedure Tree_Write is + begin + Tree_Write_Bool (Brief_Output); + Tree_Write_Bool (GNAT_Mode); + Tree_Write_Char (Identifier_Character_Set); + Tree_Write_Int (Maximum_File_Name_Length); + Tree_Write_Data (Suppress_Options'Address, + Suppress_Record'Object_Size / Storage_Unit); + Tree_Write_Bool (Verbose_Mode); + Tree_Write_Data (Warning_Mode'Address, + Warning_Mode_Type'Object_Size / Storage_Unit); + Tree_Write_Bool (Ada_83_Config); + Tree_Write_Bool (All_Errors_Mode); + Tree_Write_Bool (Assertions_Enabled); + Tree_Write_Bool (Full_List); + Tree_Write_Int (Int (Gnat_Version_String'Length)); + Tree_Write_Data (Gnat_Version_String'Address, + Gnat_Version_String'Length); + Tree_Write_Data (Distribution_Stub_Mode'Address, + Distribution_Stub_Mode_Type'Object_Size / Storage_Unit); + Tree_Write_Bool (Immediate_Errors); + Tree_Write_Bool (Inline_Active); + Tree_Write_Bool (Inline_Processing_Required); + Tree_Write_Bool (List_Units); + Tree_Write_Bool (No_Run_Time); + Tree_Write_Data (Operating_Mode'Address, + Operating_Mode_Type'Object_Size / Storage_Unit); + Tree_Write_Bool (Software_Overflow_Checking); + Tree_Write_Bool (Try_Semantics); + Tree_Write_Data (Wide_Character_Encoding_Method'Address, + WC_Encoding_Method'Object_Size / Storage_Unit); + Tree_Write_Bool (Upper_Half_Encoding); + Tree_Write_Bool (Force_ALI_Tree_File); + end Tree_Write; + +end Opt; |