-- --
-- B o d y --
-- --
--- Copyright (C) 1992-2004 Free Software Foundation, Inc. --
+-- Copyright (C) 1992-2009, 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- --
+-- ware Foundation; either version 3, 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. --
+-- or FITNESS FOR A PARTICULAR PURPOSE. --
-- --
--- 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. --
+-- As a special exception under Section 7 of GPL version 3, you are granted --
+-- additional permissions described in the GCC Runtime Library Exception, --
+-- version 3.1, as published by the Free Software Foundation. --
+-- --
+-- You should have received a copy of the GNU General Public License and --
+-- a copy of the GCC Runtime Library Exception along with this program; --
+-- see the files COPYING3 and COPYING.RUNTIME respectively. If not, see --
+-- <http://www.gnu.org/licenses/>. --
-- --
-- GNAT was originally developed by the GNAT team at New York University. --
-- Extensive contributions were provided by Ada Core Technologies Inc. --
with Atree; use Atree;
with Einfo; use Einfo;
with Fname; use Fname;
-with Namet; use Namet;
-with Namet; use Namet;
with Output; use Output;
with Sinfo; use Sinfo;
with Sinput; use Sinput;
package body Lib is
+ Switch_Storing_Enabled : Boolean := True;
+ -- Controlled by Enable_Switch_Storing/Disable_Switch_Storing
+
-----------------------
-- Local Subprograms --
-----------------------
-- Used by In_Same_Extended_Unit and Earlier_In_Extended_Unit. Returns
-- value as described above.
+ function Get_Code_Or_Source_Unit
+ (S : Source_Ptr;
+ Unwind_Instances : Boolean) return Unit_Number_Type;
+ -- Common code for Get_Code_Unit (get unit of instantiation for location)
+ -- and Get_Source_Unit (get unit of template for location).
+
--------------------------------------------
-- Access Functions for Unit Table Fields --
--------------------------------------------
return Units.Table (U).Dependency_Num;
end Dependency_Num;
- function Dependent_Unit (U : Unit_Number_Type) return Boolean is
- begin
- return Units.Table (U).Dependent_Unit;
- end Dependent_Unit;
-
function Dynamic_Elab (U : Unit_Number_Type) return Boolean is
begin
return Units.Table (U).Dynamic_Elab;
return Units.Table (U).Has_RACW;
end Has_RACW;
+ function Is_Compiler_Unit (U : Unit_Number_Type) return Boolean is
+ begin
+ return Units.Table (U).Is_Compiler_Unit;
+ end Is_Compiler_Unit;
+
function Ident_String (U : Unit_Number_Type) return Node_Id is
begin
return Units.Table (U).Ident_String;
return Units.Table (U).Munit_Index;
end Munit_Index;
+ function OA_Setting (U : Unit_Number_Type) return Character is
+ begin
+ return Units.Table (U).OA_Setting;
+ end OA_Setting;
+
function Source_Index (U : Unit_Number_Type) return Source_File_Index is
begin
return Units.Table (U).Source_Index;
Units.Table (U).Has_RACW := B;
end Set_Has_RACW;
+ procedure Set_Is_Compiler_Unit
+ (U : Unit_Number_Type;
+ B : Boolean := True)
+ is
+ begin
+ Units.Table (U).Is_Compiler_Unit := B;
+ end Set_Is_Compiler_Unit;
+
procedure Set_Ident_String (U : Unit_Number_Type; N : Node_Id) is
begin
Units.Table (U).Ident_String := N;
Units.Table (U).Main_Priority := P;
end Set_Main_Priority;
+ procedure Set_OA_Setting (U : Unit_Number_Type; C : Character) is
+ begin
+ Units.Table (U).OA_Setting := C;
+ end Set_OA_Setting;
+
procedure Set_Unit_Name (U : Unit_Number_Type; N : Unit_Name_Type) is
begin
Units.Table (U).Unit_Name := N;
end if;
-- At this stage we know that neither is a subunit, so we deal
- -- with instantiations, since we culd have a common ancestor
+ -- with instantiations, since we could have a common ancestor
Inst1 := Instantiation (Sind1);
Inst2 := Instantiation (Sind2);
return Compilation_Switches.Last;
end Compilation_Switches_Last;
+ ---------------------------
+ -- Enable_Switch_Storing --
+ ---------------------------
+
+ procedure Enable_Switch_Storing is
+ begin
+ Switch_Storing_Enabled := True;
+ end Enable_Switch_Storing;
+
+ ----------------------------
+ -- Disable_Switch_Storing --
+ ----------------------------
+
+ procedure Disable_Switch_Storing is
+ begin
+ Switch_Storing_Enabled := False;
+ end Disable_Switch_Storing;
+
------------------------------
-- Earlier_In_Extended_Unit --
------------------------------
return False;
end Entity_Is_In_Main_Unit;
- ---------------------------------
- -- Generic_Separately_Compiled --
- ---------------------------------
+ --------------------------
+ -- Generic_May_Lack_ALI --
+ --------------------------
- function Generic_Separately_Compiled (E : Entity_Id) return Boolean is
+ function Generic_May_Lack_ALI (Sfile : File_Name_Type) return Boolean is
begin
- -- We do not generate object files for internal generics, because
- -- the only thing they would contain is the elaboration boolean, and
- -- we are careful to elaborate all predefined units first anyway, so
- -- this boolean is not needed.
-
- if Is_Internal_File_Name
- (Fname => Unit_File_Name (Get_Source_Unit (E)),
- Renamings_Included => True)
- then
- return False;
-
- -- All other generic units do generate object files
+ -- We allow internal generic units to be used without having a
+ -- corresponding ALI files to help bootstrapping with older compilers
+ -- that did not support generating ALIs for such generics. It is safe
+ -- to do so because the only thing the generated code would contain
+ -- is the elaboration boolean, and we are careful to elaborate all
+ -- predefined units first anyway.
+
+ return Is_Internal_File_Name
+ (Fname => Sfile,
+ Renamings_Included => True);
+ end Generic_May_Lack_ALI;
- else
- return True;
- end if;
- end Generic_Separately_Compiled;
+ -----------------------------
+ -- Get_Code_Or_Source_Unit --
+ -----------------------------
- function Generic_Separately_Compiled
- (Sfile : File_Name_Type) return Boolean
+ function Get_Code_Or_Source_Unit
+ (S : Source_Ptr;
+ Unwind_Instances : Boolean) return Unit_Number_Type
is
begin
- -- Exactly the same as previous function, but works directly on a file
- -- name.
-
- if Is_Internal_File_Name
- (Fname => Sfile,
- Renamings_Included => True)
- then
- return False;
-
- -- All other generic units do generate object files
-
- else
- return True;
- end if;
- end Generic_Separately_Compiled;
-
- -------------------
- -- Get_Code_Unit --
- -------------------
-
- function Get_Code_Unit (S : Source_Ptr) return Unit_Number_Type is
- begin
-- Search table unless we have No_Location, which can happen if the
-- relevant location has not been set yet. Happens for example when
-- we obtain Sloc (Cunit (Main_Unit)) before it is set.
if S /= No_Location then
declare
- Source_File : constant Source_File_Index :=
- Get_Source_File_Index (Top_Level_Location (S));
+ Source_File : Source_File_Index;
+ Source_Unit : Unit_Number_Type;
begin
- for U in Units.First .. Units.Last loop
- if Source_Index (U) = Source_File then
- return U;
- end if;
- end loop;
+ Source_File := Get_Source_File_Index (S);
+
+ if Unwind_Instances then
+ while Template (Source_File) /= No_Source_File loop
+ Source_File := Template (Source_File);
+ end loop;
+ end if;
+
+ Source_Unit := Unit (Source_File);
+
+ if Source_Unit /= No_Unit then
+ return Source_Unit;
+ end if;
end;
end if;
- -- If S was No_Location, or was not in the table, we must be in the
- -- main source unit (and the value has not been placed in the table yet)
+ -- If S was No_Location, or was not in the table, we must be in the main
+ -- source unit (and the value has not been placed in the table yet),
+ -- or in one of the configuration pragma files.
return Main_Unit;
+ end Get_Code_Or_Source_Unit;
+
+ -------------------
+ -- Get_Code_Unit --
+ -------------------
+
+ function Get_Code_Unit (S : Source_Ptr) return Unit_Number_Type is
+ begin
+ return Get_Code_Or_Source_Unit (Top_Level_Location (S),
+ Unwind_Instances => False);
end Get_Code_Unit;
function Get_Code_Unit (N : Node_Or_Entity_Id) return Unit_Number_Type is
end if;
end loop;
- -- If not in the table, must be the main source unit, and we just
- -- have not got it put into the table yet.
+ -- If not in the table, must be a spec created for a main unit that is a
+ -- child subprogram body which we have not inserted into the table yet.
- return Main_Unit;
+ if N = Library_Unit (Cunit (Main_Unit)) then
+ return Main_Unit;
+
+ -- If it is anything else, something is seriously wrong, and we really
+ -- don't want to proceed, even if assertions are off, so we explicitly
+ -- raise an exception in this case to terminate compilation.
+
+ else
+ raise Program_Error;
+ end if;
end Get_Cunit_Unit_Number;
---------------------
function Get_Source_Unit (S : Source_Ptr) return Unit_Number_Type is
begin
- -- Search table unless we have No_Location, which can happen if the
- -- relevant location has not been set yet. Happens for example when
- -- we obtain Sloc (Cunit (Main_Unit)) before it is set.
-
- if S /= No_Location then
- declare
- Source_File : Source_File_Index :=
- Get_Source_File_Index (Top_Level_Location (S));
-
- begin
- Source_File := Get_Source_File_Index (S);
- while Template (Source_File) /= No_Source_File loop
- Source_File := Template (Source_File);
- end loop;
-
- for U in Units.First .. Units.Last loop
- if Source_Index (U) = Source_File then
- return U;
- end if;
- end loop;
- end;
- end if;
-
- -- If S was No_Location, or was not in the table, we must be in the
- -- main source unit (and the value has not got put into the table yet)
-
- return Main_Unit;
+ return Get_Code_Or_Source_Unit (S, Unwind_Instances => True);
end Get_Source_Unit;
function Get_Source_Unit (N : Node_Or_Entity_Id) return Unit_Number_Type is
else
return
- In_Same_Extended_Unit (Sloc (N), Sloc (Cunit (Main_Unit)));
+ In_Same_Extended_Unit (N, Cunit (Main_Unit));
end if;
end In_Extended_Main_Code_Unit;
end if;
end In_Extended_Main_Source_Unit;
+ ------------------------
+ -- In_Predefined_Unit --
+ ------------------------
+
+ function In_Predefined_Unit (N : Node_Or_Entity_Id) return Boolean is
+ begin
+ return In_Predefined_Unit (Sloc (N));
+ end In_Predefined_Unit;
+
+ function In_Predefined_Unit (S : Source_Ptr) return Boolean is
+ Unit : constant Unit_Number_Type := Get_Source_Unit (S);
+ File : constant File_Name_Type := Unit_File_Name (Unit);
+ begin
+ return Is_Predefined_File_Name (File);
+ end In_Predefined_Unit;
+
-----------------------
-- In_Same_Code_Unit --
-----------------------
-- In_Same_Extended_Unit --
---------------------------
+ function In_Same_Extended_Unit
+ (N1, N2 : Node_Or_Entity_Id) return Boolean
+ is
+ begin
+ return Check_Same_Extended_Unit (Sloc (N1), Sloc (N2)) /= No;
+ end In_Same_Extended_Unit;
+
function In_Same_Extended_Unit (S1, S2 : Source_Ptr) return Boolean is
begin
return Check_Same_Extended_Unit (S1, S2) /= No;
Linker_Option_Lines.Init;
Load_Stack.Init;
Units.Init;
- Unit_Exception_Table_Present := False;
Compilation_Switches.Init;
end Initialize;
procedure Store_Compilation_Switch (Switch : String) is
begin
- Compilation_Switches.Increment_Last;
- Compilation_Switches.Table (Compilation_Switches.Last) :=
- new String'(Switch);
+ if Switch_Storing_Enabled then
+ Compilation_Switches.Increment_Last;
+ Compilation_Switches.Table (Compilation_Switches.Last) :=
+ new String'(Switch);
- -- Fix up --RTS flag which has been transformed by the gcc driver
- -- into -fRTS
+ -- Fix up --RTS flag which has been transformed by the gcc driver
+ -- into -fRTS
- if Switch'Last >= Switch'First + 4
- and then Switch (Switch'First .. Switch'First + 4) = "-fRTS"
- then
- Compilation_Switches.Table
- (Compilation_Switches.Last) (Switch'First + 1) := '-';
+ if Switch'Last >= Switch'First + 4
+ and then Switch (Switch'First .. Switch'First + 4) = "-fRTS"
+ then
+ Compilation_Switches.Table
+ (Compilation_Switches.Last) (Switch'First + 1) := '-';
+ end if;
end if;
end Store_Compilation_Switch;
(Option => S, Unit => Current_Sem_Unit);
end Store_Linker_Option_String;
+ -------------------------------
+ -- Synchronize_Serial_Number --
+ -------------------------------
+
+ procedure Synchronize_Serial_Number is
+ TSN : Int renames Units.Table (Current_Sem_Unit).Serial_Number;
+ begin
+ TSN := TSN + 1;
+ end Synchronize_Serial_Number;
+
---------------
-- Tree_Read --
---------------
begin
Units.Tree_Read;
- -- Read Compilation_Switches table
+ -- Read Compilation_Switches table. First release the memory occupied
+ -- by the previously loaded switches.
+
+ for J in Compilation_Switches.First .. Compilation_Switches.Last loop
+ Free (Compilation_Switches.Table (J));
+ end loop;
Tree_Read_Int (N);
Compilation_Switches.Set_Last (N);
end loop;
end Tree_Write;
+ ------------
+ -- Unlock --
+ ------------
+
+ procedure Unlock is
+ begin
+ Linker_Option_Lines.Locked := False;
+ Load_Stack.Locked := False;
+ Units.Locked := False;
+ end Unlock;
+
-----------------
-- Version_Get --
-----------------
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