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Diffstat (limited to 'gcc-4.8/gcc/ada/cstand.adb')
| -rw-r--r-- | gcc-4.8/gcc/ada/cstand.adb | 2200 |
1 files changed, 0 insertions, 2200 deletions
diff --git a/gcc-4.8/gcc/ada/cstand.adb b/gcc-4.8/gcc/ada/cstand.adb deleted file mode 100644 index 7a7243fae..000000000 --- a/gcc-4.8/gcc/ada/cstand.adb +++ /dev/null @@ -1,2200 +0,0 @@ ------------------------------------------------------------------------------- --- -- --- GNAT COMPILER COMPONENTS -- --- -- --- C S T A N D -- --- -- --- B o d y -- --- -- --- Copyright (C) 1992-2012, 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 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 COPYING3. If not, go to -- --- http://www.gnu.org/licenses for a complete copy of the license. -- --- -- --- 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 Back_End; use Back_End; -with Csets; use Csets; -with Debug; use Debug; -with Einfo; use Einfo; -with Elists; use Elists; -with Layout; use Layout; -with Namet; use Namet; -with Nlists; use Nlists; -with Nmake; use Nmake; -with Opt; use Opt; -with Output; use Output; -with Targparm; use Targparm; -with Tbuild; use Tbuild; -with Ttypes; use Ttypes; -with Scn; -with Sem_Mech; use Sem_Mech; -with Sem_Util; use Sem_Util; -with Sinfo; use Sinfo; -with Snames; use Snames; -with Stand; use Stand; -with Uintp; use Uintp; -with Urealp; use Urealp; - -package body CStand is - - Stloc : constant Source_Ptr := Standard_Location; - Staloc : constant Source_Ptr := Standard_ASCII_Location; - -- Standard abbreviations used throughout this package - - Back_End_Float_Types : Elist_Id := No_Elist; - -- List used for any floating point supported by the back end. This needs - -- to be at the library level, because the call back procedures retrieving - -- this information are at that level. - - ----------------------- - -- Local Subprograms -- - ----------------------- - - procedure Build_Float_Type - (E : Entity_Id; - Siz : Int; - Rep : Float_Rep_Kind; - Digs : Int); - -- Procedure to build standard predefined float base type. The first - -- parameter is the entity for the type, and the second parameter is the - -- size in bits. The third parameter indicates the kind of representation - -- to be used. The fourth parameter is the digits value. Each type - -- is added to the list of predefined floating point types. - - procedure Build_Signed_Integer_Type (E : Entity_Id; Siz : Int); - -- Procedure to build standard predefined signed integer subtype. The - -- first parameter is the entity for the subtype. The second parameter - -- is the size in bits. The corresponding base type is not built by - -- this routine but instead must be built by the caller where needed. - - procedure Copy_Float_Type (To : Entity_Id; From : Entity_Id); - -- Build a floating point type, copying representation details from From. - -- This is used to create predefined floating point types based on - -- available types in the back end. - - procedure Create_Operators; - -- Make entries for each of the predefined operators in Standard - - procedure Create_Unconstrained_Base_Type - (E : Entity_Id; - K : Entity_Kind); - -- The predefined signed integer types are constrained subtypes which - -- must have a corresponding unconstrained base type. This type is almost - -- useless. The only place it has semantics is Subtypes_Statically_Match. - -- Consequently, we arrange for it to be identical apart from the setting - -- of the constrained bit. This routine takes an entity E for the Type, - -- copies it to estabish the base type, then resets the Ekind of the - -- original entity to K (the Ekind for the subtype). The Etype field of - -- E is set by the call (to point to the created base type entity), and - -- also the Is_Constrained flag of E is set. - -- - -- To understand the exact requirement for this, see RM 3.5.4(11) which - -- makes it clear that Integer, for example, is constrained, with the - -- constraint bounds matching the bounds of the (unconstrained) base - -- type. The point is that Integer and Integer'Base have identical - -- bounds, but do not statically match, since a subtype with constraints - -- never matches a subtype with no constraints. - - function Find_Back_End_Float_Type (Name : String) return Entity_Id; - -- Return the first float type in Back_End_Float_Types with the given name. - -- Names of entities in back end types, are either type names of C - -- predefined types (all lower case), or mode names (upper case). - -- These are not generally valid identifier names. - - function Identifier_For (S : Standard_Entity_Type) return Node_Id; - -- Returns an identifier node with the same name as the defining - -- identifier corresponding to the given Standard_Entity_Type value - - procedure Make_Component - (Rec : Entity_Id; - Typ : Entity_Id; - Nam : String); - -- Build a record component with the given type and name, and append to - -- the list of components of Rec. - - function Make_Formal - (Typ : Entity_Id; - Formal_Name : String) return Entity_Id; - -- Construct entity for subprogram formal with given name and type - - function Make_Integer (V : Uint) return Node_Id; - -- Builds integer literal with given value - - procedure Make_Name (Id : Entity_Id; Nam : String); - -- Make an entry in the names table for Nam, and set as Chars field of Id - - function New_Operator (Op : Name_Id; Typ : Entity_Id) return Entity_Id; - -- Build entity for standard operator with given name and type - - function New_Standard_Entity - (New_Node_Kind : Node_Kind := N_Defining_Identifier) return Entity_Id; - -- Builds a new entity for Standard - - procedure Print_Standard; - -- Print representation of package Standard if switch set - - procedure Register_Float_Type - (Name : C_String; -- Nul-terminated string with name of type - Digs : Natural; -- Nr or digits for floating point, 0 otherwise - Complex : Boolean; -- True iff type has real and imaginary parts - Count : Natural; -- Number of elements in vector, 0 otherwise - Float_Rep : Float_Rep_Kind; -- Representation used for fpt type - Precision : Positive; -- Precision of representation in bits - Size : Positive; -- Size of representation in bits - Alignment : Natural); -- Required alignment in bits - pragma Convention (C, Register_Float_Type); - -- Call back to allow the back end to register available types. - -- This call back currently creates predefined floating point base types - -- for any floating point types reported by the back end, and adds them - -- to the list of predefined float types. - - procedure Set_Integer_Bounds - (Id : Entity_Id; - Typ : Entity_Id; - Lb : Uint; - Hb : Uint); - -- Procedure to set bounds for integer type or subtype. Id is the entity - -- whose bounds and type are to be set. The Typ parameter is the Etype - -- value for the entity (which will be the same as Id for all predefined - -- integer base types. The third and fourth parameters are the bounds. - - ---------------------- - -- Build_Float_Type -- - ---------------------- - - procedure Build_Float_Type - (E : Entity_Id; - Siz : Int; - Rep : Float_Rep_Kind; - Digs : Int) - is - begin - Set_Type_Definition (Parent (E), - Make_Floating_Point_Definition (Stloc, - Digits_Expression => Make_Integer (UI_From_Int (Digs)))); - - Set_Ekind (E, E_Floating_Point_Type); - Set_Etype (E, E); - Set_Float_Rep (E, Rep); - Init_Size (E, Siz); - Set_Elem_Alignment (E); - Init_Digits_Value (E, Digs); - Set_Float_Bounds (E); - Set_Is_Frozen (E); - Set_Is_Public (E); - Set_Size_Known_At_Compile_Time (E); - end Build_Float_Type; - - ------------------------------ - -- Find_Back_End_Float_Type -- - ------------------------------ - - function Find_Back_End_Float_Type (Name : String) return Entity_Id is - N : Elmt_Id; - - begin - N := First_Elmt (Back_End_Float_Types); - while Present (N) and then Get_Name_String (Chars (Node (N))) /= Name - loop - Next_Elmt (N); - end loop; - - return Node (N); - end Find_Back_End_Float_Type; - - ------------------------------- - -- Build_Signed_Integer_Type -- - ------------------------------- - - procedure Build_Signed_Integer_Type (E : Entity_Id; Siz : Int) is - U2Siz1 : constant Uint := 2 ** (Siz - 1); - Lbound : constant Uint := -U2Siz1; - Ubound : constant Uint := U2Siz1 - 1; - - begin - Set_Type_Definition (Parent (E), - Make_Signed_Integer_Type_Definition (Stloc, - Low_Bound => Make_Integer (Lbound), - High_Bound => Make_Integer (Ubound))); - - Set_Ekind (E, E_Signed_Integer_Type); - Set_Etype (E, E); - Init_Size (E, Siz); - Set_Elem_Alignment (E); - Set_Integer_Bounds (E, E, Lbound, Ubound); - Set_Is_Frozen (E); - Set_Is_Public (E); - Set_Is_Known_Valid (E); - Set_Size_Known_At_Compile_Time (E); - end Build_Signed_Integer_Type; - - --------------------- - -- Copy_Float_Type -- - --------------------- - - procedure Copy_Float_Type (To : Entity_Id; From : Entity_Id) is - begin - Build_Float_Type (To, UI_To_Int (Esize (From)), Float_Rep (From), - UI_To_Int (Digits_Value (From))); - end Copy_Float_Type; - - ---------------------- - -- Create_Operators -- - ---------------------- - - -- Each operator has an abbreviated signature. The formals have the names - -- LEFT and RIGHT. Their types are not actually used for resolution. - - procedure Create_Operators is - Op_Node : Entity_Id; - - -- The following tables define the binary and unary operators and their - -- corresponding result type. - - Binary_Ops : constant array (S_Binary_Ops) of Name_Id := - - -- There is one entry here for each binary operator, except for the - -- case of concatenation, where there are three entries, one for a - -- String result, one for Wide_String, and one for Wide_Wide_String. - - (Name_Op_Add, - Name_Op_And, - Name_Op_Concat, - Name_Op_Concat, - Name_Op_Concat, - Name_Op_Divide, - Name_Op_Eq, - Name_Op_Expon, - Name_Op_Ge, - Name_Op_Gt, - Name_Op_Le, - Name_Op_Lt, - Name_Op_Mod, - Name_Op_Multiply, - Name_Op_Ne, - Name_Op_Or, - Name_Op_Rem, - Name_Op_Subtract, - Name_Op_Xor); - - Bin_Op_Types : constant array (S_Binary_Ops) of Entity_Id := - - -- This table has the corresponding result types. The entries are - -- ordered so they correspond to the Binary_Ops array above. - - (Universal_Integer, -- Add - Standard_Boolean, -- And - Standard_String, -- Concat (String) - Standard_Wide_String, -- Concat (Wide_String) - Standard_Wide_Wide_String, -- Concat (Wide_Wide_String) - Universal_Integer, -- Divide - Standard_Boolean, -- Eq - Universal_Integer, -- Expon - Standard_Boolean, -- Ge - Standard_Boolean, -- Gt - Standard_Boolean, -- Le - Standard_Boolean, -- Lt - Universal_Integer, -- Mod - Universal_Integer, -- Multiply - Standard_Boolean, -- Ne - Standard_Boolean, -- Or - Universal_Integer, -- Rem - Universal_Integer, -- Subtract - Standard_Boolean); -- Xor - - Unary_Ops : constant array (S_Unary_Ops) of Name_Id := - - -- There is one entry here for each unary operator - - (Name_Op_Abs, - Name_Op_Subtract, - Name_Op_Not, - Name_Op_Add); - - Unary_Op_Types : constant array (S_Unary_Ops) of Entity_Id := - - -- This table has the corresponding result types. The entries are - -- ordered so they correspond to the Unary_Ops array above. - - (Universal_Integer, -- Abs - Universal_Integer, -- Subtract - Standard_Boolean, -- Not - Universal_Integer); -- Add - - begin - for J in S_Binary_Ops loop - Op_Node := New_Operator (Binary_Ops (J), Bin_Op_Types (J)); - SE (J) := Op_Node; - Append_Entity (Make_Formal (Any_Type, "LEFT"), Op_Node); - Append_Entity (Make_Formal (Any_Type, "RIGHT"), Op_Node); - end loop; - - for J in S_Unary_Ops loop - Op_Node := New_Operator (Unary_Ops (J), Unary_Op_Types (J)); - SE (J) := Op_Node; - Append_Entity (Make_Formal (Any_Type, "RIGHT"), Op_Node); - end loop; - - -- For concatenation, we create a separate operator for each - -- array type. This simplifies the resolution of the component- - -- component concatenation operation. In Standard, we set the types - -- of the formals for string, wide [wide]_string, concatenations. - - Set_Etype (First_Entity (Standard_Op_Concat), Standard_String); - Set_Etype (Last_Entity (Standard_Op_Concat), Standard_String); - - Set_Etype (First_Entity (Standard_Op_Concatw), Standard_Wide_String); - Set_Etype (Last_Entity (Standard_Op_Concatw), Standard_Wide_String); - - Set_Etype (First_Entity (Standard_Op_Concatww), - Standard_Wide_Wide_String); - - Set_Etype (Last_Entity (Standard_Op_Concatww), - Standard_Wide_Wide_String); - end Create_Operators; - - --------------------- - -- Create_Standard -- - --------------------- - - -- The tree for the package Standard is prefixed to all compilations. - -- Several entities required by semantic analysis are denoted by global - -- variables that are initialized to point to the corresponding occurrences - -- in Standard. The visible entities of Standard are created here. Special - -- entities maybe created here as well or may be created from the semantics - -- module. By not adding them to the Decls list of Standard they will not - -- be visible to Ada programs. - - procedure Create_Standard is - Decl_S : constant List_Id := New_List; - -- List of declarations in Standard - - Decl_A : constant List_Id := New_List; - -- List of declarations in ASCII - - Decl : Node_Id; - Pspec : Node_Id; - Tdef_Node : Node_Id; - Ident_Node : Node_Id; - Ccode : Char_Code; - E_Id : Entity_Id; - R_Node : Node_Id; - B_Node : Node_Id; - - procedure Build_Exception (S : Standard_Entity_Type); - -- Procedure to declare given entity as an exception - - procedure Create_Back_End_Float_Types; - -- Initialize the Back_End_Float_Types list by having the back end - -- enumerate all available types and building type entities for them. - - procedure Create_Float_Types; - -- Creates entities for all predefined floating point types, and - -- adds these to the Predefined_Float_Types list in package Standard. - - procedure Pack_String_Type (String_Type : Entity_Id); - -- Generate proper tree for pragma Pack that applies to given type, and - -- mark type as having the pragma. - - --------------------- - -- Build_Exception -- - --------------------- - - procedure Build_Exception (S : Standard_Entity_Type) is - begin - Set_Ekind (Standard_Entity (S), E_Exception); - Set_Etype (Standard_Entity (S), Standard_Exception_Type); - Set_Exception_Code (Standard_Entity (S), Uint_0); - Set_Is_Public (Standard_Entity (S), True); - - Decl := - Make_Exception_Declaration (Stloc, - Defining_Identifier => Standard_Entity (S)); - Append (Decl, Decl_S); - end Build_Exception; - - --------------------------- - -- Create_Back_End_Float_Types -- - --------------------------- - - procedure Create_Back_End_Float_Types is - begin - Back_End_Float_Types := No_Elist; - Register_Back_End_Types (Register_Float_Type'Access); - end Create_Back_End_Float_Types; - - ------------------------ - -- Create_Float_Types -- - ------------------------ - - procedure Create_Float_Types is - begin - -- Create type definition nodes for predefined float types - - Copy_Float_Type - (Standard_Short_Float, - Find_Back_End_Float_Type ("float")); - Set_Is_Implementation_Defined (Standard_Short_Float); - - Copy_Float_Type (Standard_Float, Standard_Short_Float); - - Copy_Float_Type (Standard_Long_Float, - Find_Back_End_Float_Type ("double")); - - Predefined_Float_Types := New_Elmt_List; - Append_Elmt (Standard_Short_Float, Predefined_Float_Types); - Append_Elmt (Standard_Float, Predefined_Float_Types); - Append_Elmt (Standard_Long_Float, Predefined_Float_Types); - - -- ??? For now, we don't have a good way to tell the widest float - -- type with hardware support. Basically, GCC knows the size of that - -- type, but on x86-64 there often are two or three 128-bit types, - -- one double extended that has 18 decimal digits, a 128-bit quad - -- precision type with 33 digits and possibly a 128-bit decimal float - -- type with 34 digits. As a workaround, we define Long_Long_Float as - -- C's "long double" if that type exists and has at most 18 digits, - -- or otherwise the same as Long_Float. - - declare - Max_HW_Digs : constant := 18; - -- Maximum hardware digits supported - - LLF : Entity_Id := Find_Back_End_Float_Type ("long double"); - -- Entity for long double type - - begin - if No (LLF) or else Digits_Value (LLF) > Max_HW_Digs then - LLF := Standard_Long_Float; - end if; - - Set_Is_Implementation_Defined (Standard_Long_Long_Float); - Copy_Float_Type (Standard_Long_Long_Float, LLF); - - Append_Elmt (Standard_Long_Long_Float, Predefined_Float_Types); - end; - - -- Any other back end types are appended at the end of the list of - -- predefined float types, and will only be selected if the none of - -- the types in Standard is suitable, or if a specific named type is - -- requested through a pragma Import. - - while not Is_Empty_Elmt_List (Back_End_Float_Types) loop - declare - E : constant Elmt_Id := First_Elmt (Back_End_Float_Types); - begin - Append_Elmt (Node (E), To => Predefined_Float_Types); - Remove_Elmt (Back_End_Float_Types, E); - end; - end loop; - end Create_Float_Types; - - ---------------------- - -- Pack_String_Type -- - ---------------------- - - procedure Pack_String_Type (String_Type : Entity_Id) is - Prag : constant Node_Id := - Make_Pragma (Stloc, - Chars => Name_Pack, - Pragma_Argument_Associations => - New_List ( - Make_Pragma_Argument_Association (Stloc, - Expression => New_Occurrence_Of (String_Type, Stloc)))); - begin - Append (Prag, Decl_S); - Record_Rep_Item (String_Type, Prag); - Set_Has_Pragma_Pack (String_Type, True); - end Pack_String_Type; - - -- Start of processing for Create_Standard - - begin - -- Initialize scanner for internal scans of literals - - Scn.Initialize_Scanner (No_Unit, Internal_Source_File); - - -- First step is to create defining identifiers for each entity - - for S in Standard_Entity_Type loop - declare - S_Name : constant String := Standard_Entity_Type'Image (S); - -- Name of entity (note we skip S_ at the start) - - Ident_Node : Node_Id; - -- Defining identifier node - - begin - Ident_Node := New_Standard_Entity; - Make_Name (Ident_Node, S_Name (3 .. S_Name'Length)); - Standard_Entity (S) := Ident_Node; - end; - end loop; - - -- Create package declaration node for package Standard - - Standard_Package_Node := New_Node (N_Package_Declaration, Stloc); - - Pspec := New_Node (N_Package_Specification, Stloc); - Set_Specification (Standard_Package_Node, Pspec); - - Set_Defining_Unit_Name (Pspec, Standard_Standard); - Set_Visible_Declarations (Pspec, Decl_S); - - Set_Ekind (Standard_Standard, E_Package); - Set_Is_Pure (Standard_Standard); - Set_Is_Compilation_Unit (Standard_Standard); - - -- Create type/subtype declaration nodes for standard types - - for S in S_Types loop - - -- Subtype declaration case - - if S = S_Natural or else S = S_Positive then - Decl := New_Node (N_Subtype_Declaration, Stloc); - Set_Subtype_Indication (Decl, - New_Occurrence_Of (Standard_Integer, Stloc)); - - -- Full type declaration case - - else - Decl := New_Node (N_Full_Type_Declaration, Stloc); - end if; - - Set_Is_Frozen (Standard_Entity (S)); - Set_Is_Public (Standard_Entity (S)); - Set_Defining_Identifier (Decl, Standard_Entity (S)); - Append (Decl, Decl_S); - end loop; - - Create_Back_End_Float_Types; - - -- Create type definition node for type Boolean. The Size is set to - -- 1 as required by Ada 95 and current ARG interpretations for Ada/83. - - -- Note: Object_Size of Boolean is 8. This means that we do NOT in - -- general know that Boolean variables have valid values, so we do - -- not set the Is_Known_Valid flag. - - Tdef_Node := New_Node (N_Enumeration_Type_Definition, Stloc); - Set_Literals (Tdef_Node, New_List); - Append (Standard_False, Literals (Tdef_Node)); - Append (Standard_True, Literals (Tdef_Node)); - Set_Type_Definition (Parent (Standard_Boolean), Tdef_Node); - - Set_Ekind (Standard_Boolean, E_Enumeration_Type); - Set_First_Literal (Standard_Boolean, Standard_False); - Set_Etype (Standard_Boolean, Standard_Boolean); - Init_Esize (Standard_Boolean, Standard_Character_Size); - Init_RM_Size (Standard_Boolean, 1); - Set_Elem_Alignment (Standard_Boolean); - - Set_Is_Unsigned_Type (Standard_Boolean); - Set_Size_Known_At_Compile_Time (Standard_Boolean); - Set_Has_Pragma_Ordered (Standard_Boolean); - - Set_Ekind (Standard_True, E_Enumeration_Literal); - Set_Etype (Standard_True, Standard_Boolean); - Set_Enumeration_Pos (Standard_True, Uint_1); - Set_Enumeration_Rep (Standard_True, Uint_1); - Set_Is_Known_Valid (Standard_True, True); - - Set_Ekind (Standard_False, E_Enumeration_Literal); - Set_Etype (Standard_False, Standard_Boolean); - Set_Enumeration_Pos (Standard_False, Uint_0); - Set_Enumeration_Rep (Standard_False, Uint_0); - Set_Is_Known_Valid (Standard_False, True); - - -- For the bounds of Boolean, we create a range node corresponding to - - -- range False .. True - - -- where the occurrences of the literals must point to the - -- corresponding definition. - - R_Node := New_Node (N_Range, Stloc); - B_Node := New_Node (N_Identifier, Stloc); - Set_Chars (B_Node, Chars (Standard_False)); - Set_Entity (B_Node, Standard_False); - Set_Etype (B_Node, Standard_Boolean); - Set_Is_Static_Expression (B_Node); - Set_Low_Bound (R_Node, B_Node); - - B_Node := New_Node (N_Identifier, Stloc); - Set_Chars (B_Node, Chars (Standard_True)); - Set_Entity (B_Node, Standard_True); - Set_Etype (B_Node, Standard_Boolean); - Set_Is_Static_Expression (B_Node); - Set_High_Bound (R_Node, B_Node); - - Set_Scalar_Range (Standard_Boolean, R_Node); - Set_Etype (R_Node, Standard_Boolean); - Set_Parent (R_Node, Standard_Boolean); - - -- Record entity identifiers for boolean literals in the - -- Boolean_Literals array, for easy reference during expansion. - - Boolean_Literals := (False => Standard_False, True => Standard_True); - - -- Create type definition nodes for predefined integer types - - Build_Signed_Integer_Type - (Standard_Short_Short_Integer, Standard_Short_Short_Integer_Size); - - Build_Signed_Integer_Type - (Standard_Short_Integer, Standard_Short_Integer_Size); - - Build_Signed_Integer_Type - (Standard_Integer, Standard_Integer_Size); - - declare - LIS : Nat; - begin - if Debug_Flag_M then - LIS := 64; - else - LIS := Standard_Long_Integer_Size; - end if; - - Build_Signed_Integer_Type (Standard_Long_Integer, LIS); - end; - - Build_Signed_Integer_Type - (Standard_Long_Long_Integer, Standard_Long_Long_Integer_Size); - Set_Is_Implementation_Defined (Standard_Long_Long_Integer); - - Create_Unconstrained_Base_Type - (Standard_Short_Short_Integer, E_Signed_Integer_Subtype); - Set_Is_Implementation_Defined (Standard_Short_Short_Integer); - - Create_Unconstrained_Base_Type - (Standard_Short_Integer, E_Signed_Integer_Subtype); - - Create_Unconstrained_Base_Type - (Standard_Integer, E_Signed_Integer_Subtype); - - Create_Unconstrained_Base_Type - (Standard_Long_Integer, E_Signed_Integer_Subtype); - - Create_Unconstrained_Base_Type - (Standard_Long_Long_Integer, E_Signed_Integer_Subtype); - Set_Is_Implementation_Defined (Standard_Short_Short_Integer); - - Create_Float_Types; - - -- Create type definition node for type Character. Note that we do not - -- set the Literals field, since type Character is handled with special - -- routine that do not need a literal list. - - Tdef_Node := New_Node (N_Enumeration_Type_Definition, Stloc); - Set_Type_Definition (Parent (Standard_Character), Tdef_Node); - - Set_Ekind (Standard_Character, E_Enumeration_Type); - Set_Etype (Standard_Character, Standard_Character); - Init_Esize (Standard_Character, Standard_Character_Size); - Init_RM_Size (Standard_Character, 8); - Set_Elem_Alignment (Standard_Character); - - Set_Has_Pragma_Ordered (Standard_Character); - Set_Is_Unsigned_Type (Standard_Character); - Set_Is_Character_Type (Standard_Character); - Set_Is_Known_Valid (Standard_Character); - Set_Size_Known_At_Compile_Time (Standard_Character); - - -- Create the bounds for type Character - - R_Node := New_Node (N_Range, Stloc); - - -- Low bound for type Character (Standard.Nul) - - B_Node := New_Node (N_Character_Literal, Stloc); - Set_Is_Static_Expression (B_Node); - Set_Chars (B_Node, No_Name); - Set_Char_Literal_Value (B_Node, Uint_0); - Set_Entity (B_Node, Empty); - Set_Etype (B_Node, Standard_Character); - Set_Low_Bound (R_Node, B_Node); - - -- High bound for type Character - - B_Node := New_Node (N_Character_Literal, Stloc); - Set_Is_Static_Expression (B_Node); - Set_Chars (B_Node, No_Name); - Set_Char_Literal_Value (B_Node, UI_From_Int (16#FF#)); - Set_Entity (B_Node, Empty); - Set_Etype (B_Node, Standard_Character); - Set_High_Bound (R_Node, B_Node); - - Set_Scalar_Range (Standard_Character, R_Node); - Set_Etype (R_Node, Standard_Character); - Set_Parent (R_Node, Standard_Character); - - -- Create type definition for type Wide_Character. Note that we do not - -- set the Literals field, since type Wide_Character is handled with - -- special routines that do not need a literal list. - - Tdef_Node := New_Node (N_Enumeration_Type_Definition, Stloc); - Set_Type_Definition (Parent (Standard_Wide_Character), Tdef_Node); - - Set_Ekind (Standard_Wide_Character, E_Enumeration_Type); - Set_Etype (Standard_Wide_Character, Standard_Wide_Character); - Init_Size (Standard_Wide_Character, Standard_Wide_Character_Size); - - Set_Elem_Alignment (Standard_Wide_Character); - Set_Has_Pragma_Ordered (Standard_Wide_Character); - Set_Is_Unsigned_Type (Standard_Wide_Character); - Set_Is_Character_Type (Standard_Wide_Character); - Set_Is_Known_Valid (Standard_Wide_Character); - Set_Size_Known_At_Compile_Time (Standard_Wide_Character); - - -- Create the bounds for type Wide_Character - - R_Node := New_Node (N_Range, Stloc); - - -- Low bound for type Wide_Character - - B_Node := New_Node (N_Character_Literal, Stloc); - Set_Is_Static_Expression (B_Node); - Set_Chars (B_Node, No_Name); -- ??? - Set_Char_Literal_Value (B_Node, Uint_0); - Set_Entity (B_Node, Empty); - Set_Etype (B_Node, Standard_Wide_Character); - Set_Low_Bound (R_Node, B_Node); - - -- High bound for type Wide_Character - - B_Node := New_Node (N_Character_Literal, Stloc); - Set_Is_Static_Expression (B_Node); - Set_Chars (B_Node, No_Name); -- ??? - Set_Char_Literal_Value (B_Node, UI_From_Int (16#FFFF#)); - Set_Entity (B_Node, Empty); - Set_Etype (B_Node, Standard_Wide_Character); - Set_High_Bound (R_Node, B_Node); - - Set_Scalar_Range (Standard_Wide_Character, R_Node); - Set_Etype (R_Node, Standard_Wide_Character); - Set_Parent (R_Node, Standard_Wide_Character); - - -- Create type definition for type Wide_Wide_Character. Note that we - -- do not set the Literals field, since type Wide_Wide_Character is - -- handled with special routines that do not need a literal list. - - Tdef_Node := New_Node (N_Enumeration_Type_Definition, Stloc); - Set_Type_Definition (Parent (Standard_Wide_Wide_Character), Tdef_Node); - - Set_Ekind (Standard_Wide_Wide_Character, E_Enumeration_Type); - Set_Etype (Standard_Wide_Wide_Character, - Standard_Wide_Wide_Character); - Init_Size (Standard_Wide_Wide_Character, - Standard_Wide_Wide_Character_Size); - - Set_Elem_Alignment (Standard_Wide_Wide_Character); - Set_Has_Pragma_Ordered (Standard_Wide_Wide_Character); - Set_Is_Unsigned_Type (Standard_Wide_Wide_Character); - Set_Is_Character_Type (Standard_Wide_Wide_Character); - Set_Is_Known_Valid (Standard_Wide_Wide_Character); - Set_Size_Known_At_Compile_Time (Standard_Wide_Wide_Character); - Set_Is_Ada_2005_Only (Standard_Wide_Wide_Character); - - -- Create the bounds for type Wide_Wide_Character - - R_Node := New_Node (N_Range, Stloc); - - -- Low bound for type Wide_Wide_Character - - B_Node := New_Node (N_Character_Literal, Stloc); - Set_Is_Static_Expression (B_Node); - Set_Chars (B_Node, No_Name); -- ??? - Set_Char_Literal_Value (B_Node, Uint_0); - Set_Entity (B_Node, Empty); - Set_Etype (B_Node, Standard_Wide_Wide_Character); - Set_Low_Bound (R_Node, B_Node); - - -- High bound for type Wide_Wide_Character - - B_Node := New_Node (N_Character_Literal, Stloc); - Set_Is_Static_Expression (B_Node); - Set_Chars (B_Node, No_Name); -- ??? - Set_Char_Literal_Value (B_Node, UI_From_Int (16#7FFF_FFFF#)); - Set_Entity (B_Node, Empty); - Set_Etype (B_Node, Standard_Wide_Wide_Character); - Set_High_Bound (R_Node, B_Node); - - Set_Scalar_Range (Standard_Wide_Wide_Character, R_Node); - Set_Etype (R_Node, Standard_Wide_Wide_Character); - Set_Parent (R_Node, Standard_Wide_Wide_Character); - - -- Create type definition node for type String - - Tdef_Node := New_Node (N_Unconstrained_Array_Definition, Stloc); - - declare - CompDef_Node : Node_Id; - begin - CompDef_Node := New_Node (N_Component_Definition, Stloc); - Set_Aliased_Present (CompDef_Node, False); - Set_Access_Definition (CompDef_Node, Empty); - Set_Subtype_Indication (CompDef_Node, Identifier_For (S_Character)); - Set_Component_Definition (Tdef_Node, CompDef_Node); - end; - - Set_Subtype_Marks (Tdef_Node, New_List); - Append (Identifier_For (S_Positive), Subtype_Marks (Tdef_Node)); - Set_Type_Definition (Parent (Standard_String), Tdef_Node); - - Set_Ekind (Standard_String, E_String_Type); - Set_Etype (Standard_String, Standard_String); - Set_Component_Type (Standard_String, Standard_Character); - Set_Component_Size (Standard_String, Uint_8); - Init_Size_Align (Standard_String); - Set_Alignment (Standard_String, Uint_1); - Pack_String_Type (Standard_String); - - -- On targets where a storage unit is larger than a byte (such as AAMP), - -- pragma Pack has a real effect on the representation of type String, - -- and the type must be marked as having a nonstandard representation. - - if System_Storage_Unit > Uint_8 then - Set_Has_Non_Standard_Rep (Standard_String); - Set_Has_Pragma_Pack (Standard_String); - end if; - - -- Set index type of String - - E_Id := First - (Subtype_Marks (Type_Definition (Parent (Standard_String)))); - Set_First_Index (Standard_String, E_Id); - Set_Entity (E_Id, Standard_Positive); - Set_Etype (E_Id, Standard_Positive); - - -- Create type definition node for type Wide_String - - Tdef_Node := New_Node (N_Unconstrained_Array_Definition, Stloc); - - declare - CompDef_Node : Node_Id; - begin - CompDef_Node := New_Node (N_Component_Definition, Stloc); - Set_Aliased_Present (CompDef_Node, False); - Set_Access_Definition (CompDef_Node, Empty); - Set_Subtype_Indication (CompDef_Node, - Identifier_For (S_Wide_Character)); - Set_Component_Definition (Tdef_Node, CompDef_Node); - end; - - Set_Subtype_Marks (Tdef_Node, New_List); - Append (Identifier_For (S_Positive), Subtype_Marks (Tdef_Node)); - Set_Type_Definition (Parent (Standard_Wide_String), Tdef_Node); - - Set_Ekind (Standard_Wide_String, E_String_Type); - Set_Etype (Standard_Wide_String, Standard_Wide_String); - Set_Component_Type (Standard_Wide_String, Standard_Wide_Character); - Set_Component_Size (Standard_Wide_String, Uint_16); - Init_Size_Align (Standard_Wide_String); - Pack_String_Type (Standard_Wide_String); - - -- Set index type of Wide_String - - E_Id := First - (Subtype_Marks (Type_Definition (Parent (Standard_Wide_String)))); - Set_First_Index (Standard_Wide_String, E_Id); - Set_Entity (E_Id, Standard_Positive); - Set_Etype (E_Id, Standard_Positive); - - -- Create type definition node for type Wide_Wide_String - - Tdef_Node := New_Node (N_Unconstrained_Array_Definition, Stloc); - - declare - CompDef_Node : Node_Id; - begin - CompDef_Node := New_Node (N_Component_Definition, Stloc); - Set_Aliased_Present (CompDef_Node, False); - Set_Access_Definition (CompDef_Node, Empty); - Set_Subtype_Indication (CompDef_Node, - Identifier_For (S_Wide_Wide_Character)); - Set_Component_Definition (Tdef_Node, CompDef_Node); - end; - - Set_Subtype_Marks (Tdef_Node, New_List); - Append (Identifier_For (S_Positive), Subtype_Marks (Tdef_Node)); - Set_Type_Definition (Parent (Standard_Wide_Wide_String), Tdef_Node); - - Set_Ekind (Standard_Wide_Wide_String, E_String_Type); - Set_Etype (Standard_Wide_Wide_String, - Standard_Wide_Wide_String); - Set_Component_Type (Standard_Wide_Wide_String, - Standard_Wide_Wide_Character); - Set_Component_Size (Standard_Wide_Wide_String, Uint_32); - Init_Size_Align (Standard_Wide_Wide_String); - Set_Is_Ada_2005_Only (Standard_Wide_Wide_String); - Pack_String_Type (Standard_Wide_Wide_String); - - -- Set index type of Wide_Wide_String - - E_Id := First - (Subtype_Marks (Type_Definition (Parent (Standard_Wide_Wide_String)))); - Set_First_Index (Standard_Wide_Wide_String, E_Id); - Set_Entity (E_Id, Standard_Positive); - Set_Etype (E_Id, Standard_Positive); - - -- Setup entity for Natural - - Set_Ekind (Standard_Natural, E_Signed_Integer_Subtype); - Set_Etype (Standard_Natural, Base_Type (Standard_Integer)); - Init_Esize (Standard_Natural, Standard_Integer_Size); - Init_RM_Size (Standard_Natural, Standard_Integer_Size - 1); - Set_Elem_Alignment (Standard_Natural); - Set_Size_Known_At_Compile_Time - (Standard_Natural); - Set_Integer_Bounds (Standard_Natural, - Typ => Base_Type (Standard_Integer), - Lb => Uint_0, - Hb => Intval (High_Bound (Scalar_Range (Standard_Integer)))); - Set_Is_Constrained (Standard_Natural); - - -- Setup entity for Positive - - Set_Ekind (Standard_Positive, E_Signed_Integer_Subtype); - Set_Etype (Standard_Positive, Base_Type (Standard_Integer)); - Init_Esize (Standard_Positive, Standard_Integer_Size); - Init_RM_Size (Standard_Positive, Standard_Integer_Size - 1); - Set_Elem_Alignment (Standard_Positive); - - Set_Size_Known_At_Compile_Time (Standard_Positive); - - Set_Integer_Bounds (Standard_Positive, - Typ => Base_Type (Standard_Integer), - Lb => Uint_1, - Hb => Intval (High_Bound (Scalar_Range (Standard_Integer)))); - Set_Is_Constrained (Standard_Positive); - - -- Create declaration for package ASCII - - Decl := New_Node (N_Package_Declaration, Stloc); - Append (Decl, Decl_S); - - Pspec := New_Node (N_Package_Specification, Stloc); - Set_Specification (Decl, Pspec); - - Set_Defining_Unit_Name (Pspec, Standard_Entity (S_ASCII)); - Set_Ekind (Standard_Entity (S_ASCII), E_Package); - Set_Visible_Declarations (Pspec, Decl_A); - - -- Create control character definitions in package ASCII. Note that - -- the character literal entries created here correspond to literal - -- values that are impossible in the source, but can be represented - -- internally with no difficulties. - - Ccode := 16#00#; - - for S in S_ASCII_Names loop - Decl := New_Node (N_Object_Declaration, Staloc); - Set_Constant_Present (Decl, True); - - declare - A_Char : constant Entity_Id := Standard_Entity (S); - Expr_Decl : Node_Id; - - begin - Set_Sloc (A_Char, Staloc); - Set_Ekind (A_Char, E_Constant); - Set_Never_Set_In_Source (A_Char, True); - Set_Is_True_Constant (A_Char, True); - Set_Etype (A_Char, Standard_Character); - Set_Scope (A_Char, Standard_Entity (S_ASCII)); - Set_Is_Immediately_Visible (A_Char, False); - Set_Is_Public (A_Char, True); - Set_Is_Known_Valid (A_Char, True); - - Append_Entity (A_Char, Standard_Entity (S_ASCII)); - Set_Defining_Identifier (Decl, A_Char); - - Set_Object_Definition (Decl, Identifier_For (S_Character)); - Expr_Decl := New_Node (N_Character_Literal, Staloc); - Set_Expression (Decl, Expr_Decl); - - Set_Is_Static_Expression (Expr_Decl); - Set_Chars (Expr_Decl, No_Name); - Set_Etype (Expr_Decl, Standard_Character); - Set_Char_Literal_Value (Expr_Decl, UI_From_Int (Int (Ccode))); - end; - - Append (Decl, Decl_A); - - -- Increment character code, dealing with non-contiguities - - Ccode := Ccode + 1; - - if Ccode = 16#20# then - Ccode := 16#21#; - elsif Ccode = 16#27# then - Ccode := 16#3A#; - elsif Ccode = 16#3C# then - Ccode := 16#3F#; - elsif Ccode = 16#41# then - Ccode := 16#5B#; - end if; - end loop; - - -- Create semantic phase entities - - Standard_Void_Type := New_Standard_Entity; - Set_Ekind (Standard_Void_Type, E_Void); - Set_Etype (Standard_Void_Type, Standard_Void_Type); - Set_Scope (Standard_Void_Type, Standard_Standard); - Make_Name (Standard_Void_Type, "_void_type"); - - -- The type field of packages is set to void - - Set_Etype (Standard_Standard, Standard_Void_Type); - Set_Etype (Standard_ASCII, Standard_Void_Type); - - -- Standard_A_String is actually used in generated code, so it has a - -- type name that is reasonable, but does not overlap any Ada name. - - Standard_A_String := New_Standard_Entity; - Set_Ekind (Standard_A_String, E_Access_Type); - Set_Scope (Standard_A_String, Standard_Standard); - Set_Etype (Standard_A_String, Standard_A_String); - - if Debug_Flag_6 then - Init_Size (Standard_A_String, System_Address_Size); - else - Init_Size (Standard_A_String, System_Address_Size * 2); - end if; - - Init_Alignment (Standard_A_String); - - Set_Directly_Designated_Type - (Standard_A_String, Standard_String); - Make_Name (Standard_A_String, "access_string"); - - Standard_A_Char := New_Standard_Entity; - Set_Ekind (Standard_A_Char, E_Access_Type); - Set_Scope (Standard_A_Char, Standard_Standard); - Set_Etype (Standard_A_Char, Standard_A_String); - Init_Size (Standard_A_Char, System_Address_Size); - Set_Elem_Alignment (Standard_A_Char); - - Set_Directly_Designated_Type (Standard_A_Char, Standard_Character); - Make_Name (Standard_A_Char, "access_character"); - - -- Standard_Debug_Renaming_Type is used for the special objects created - -- to encode the names occurring in renaming declarations for use by the - -- debugger (see exp_dbug.adb). The type is a zero-sized subtype of - -- Standard.Integer. - - Standard_Debug_Renaming_Type := New_Standard_Entity; - - Set_Ekind (Standard_Debug_Renaming_Type, E_Signed_Integer_Subtype); - Set_Scope (Standard_Debug_Renaming_Type, Standard_Standard); - Set_Etype (Standard_Debug_Renaming_Type, Base_Type (Standard_Integer)); - Init_Esize (Standard_Debug_Renaming_Type, 0); - Init_RM_Size (Standard_Debug_Renaming_Type, 0); - Set_Size_Known_At_Compile_Time (Standard_Debug_Renaming_Type); - Set_Integer_Bounds (Standard_Debug_Renaming_Type, - Typ => Base_Type (Standard_Debug_Renaming_Type), - Lb => Uint_1, - Hb => Uint_0); - Set_Is_Constrained (Standard_Debug_Renaming_Type); - Set_Has_Size_Clause (Standard_Debug_Renaming_Type); - - Make_Name (Standard_Debug_Renaming_Type, "_renaming_type"); - - -- Note on type names. The type names for the following special types - -- are constructed so that they will look reasonable should they ever - -- appear in error messages etc, although in practice the use of the - -- special insertion character } for types results in special handling - -- of these type names in any case. The blanks in these names would - -- trouble in Gigi, but that's OK here, since none of these types - -- should ever get through to Gigi! Attributes of these types are - -- filled out to minimize problems with cascaded errors (for example, - -- Any_Integer is given reasonable and consistent type and size values) - - Any_Type := New_Standard_Entity; - Decl := New_Node (N_Full_Type_Declaration, Stloc); - Set_Defining_Identifier (Decl, Any_Type); - Set_Scope (Any_Type, Standard_Standard); - Build_Signed_Integer_Type (Any_Type, Standard_Integer_Size); - Make_Name (Any_Type, "any type"); - - Any_Id := New_Standard_Entity; - Set_Ekind (Any_Id, E_Variable); - Set_Scope (Any_Id, Standard_Standard); - Set_Etype (Any_Id, Any_Type); - Init_Esize (Any_Id); - Init_Alignment (Any_Id); - Make_Name (Any_Id, "any id"); - - Any_Access := New_Standard_Entity; - Set_Ekind (Any_Access, E_Access_Type); - Set_Scope (Any_Access, Standard_Standard); - Set_Etype (Any_Access, Any_Access); - Init_Size (Any_Access, System_Address_Size); - Set_Elem_Alignment (Any_Access); - Make_Name (Any_Access, "an access type"); - - Any_Character := New_Standard_Entity; - Set_Ekind (Any_Character, E_Enumeration_Type); - Set_Scope (Any_Character, Standard_Standard); - Set_Etype (Any_Character, Any_Character); - Set_Is_Unsigned_Type (Any_Character); - Set_Is_Character_Type (Any_Character); - Init_Esize (Any_Character, Standard_Character_Size); - Init_RM_Size (Any_Character, 8); - Set_Elem_Alignment (Any_Character); - Set_Scalar_Range (Any_Character, Scalar_Range (Standard_Character)); - Make_Name (Any_Character, "a character type"); - - Any_Array := New_Standard_Entity; - Set_Ekind (Any_Array, E_String_Type); - Set_Scope (Any_Array, Standard_Standard); - Set_Etype (Any_Array, Any_Array); - Set_Component_Type (Any_Array, Any_Character); - Init_Size_Align (Any_Array); - Make_Name (Any_Array, "an array type"); - - Any_Boolean := New_Standard_Entity; - Set_Ekind (Any_Boolean, E_Enumeration_Type); - Set_Scope (Any_Boolean, Standard_Standard); - Set_Etype (Any_Boolean, Standard_Boolean); - Init_Esize (Any_Boolean, Standard_Character_Size); - Init_RM_Size (Any_Boolean, 1); - Set_Elem_Alignment (Any_Boolean); - Set_Is_Unsigned_Type (Any_Boolean); - Set_Scalar_Range (Any_Boolean, Scalar_Range (Standard_Boolean)); - Make_Name (Any_Boolean, "a boolean type"); - - Any_Composite := New_Standard_Entity; - Set_Ekind (Any_Composite, E_Array_Type); - Set_Scope (Any_Composite, Standard_Standard); - Set_Etype (Any_Composite, Any_Composite); - Set_Component_Size (Any_Composite, Uint_0); - Set_Component_Type (Any_Composite, Standard_Integer); - Init_Size_Align (Any_Composite); - Make_Name (Any_Composite, "a composite type"); - - Any_Discrete := New_Standard_Entity; - Set_Ekind (Any_Discrete, E_Signed_Integer_Type); - Set_Scope (Any_Discrete, Standard_Standard); - Set_Etype (Any_Discrete, Any_Discrete); - Init_Size (Any_Discrete, Standard_Integer_Size); - Set_Elem_Alignment (Any_Discrete); - Make_Name (Any_Discrete, "a discrete type"); - - Any_Fixed := New_Standard_Entity; - Set_Ekind (Any_Fixed, E_Ordinary_Fixed_Point_Type); - Set_Scope (Any_Fixed, Standard_Standard); - Set_Etype (Any_Fixed, Any_Fixed); - Init_Size (Any_Fixed, Standard_Integer_Size); - Set_Elem_Alignment (Any_Fixed); - Make_Name (Any_Fixed, "a fixed-point type"); - - Any_Integer := New_Standard_Entity; - Set_Ekind (Any_Integer, E_Signed_Integer_Type); - Set_Scope (Any_Integer, Standard_Standard); - Set_Etype (Any_Integer, Standard_Long_Long_Integer); - Init_Size (Any_Integer, Standard_Long_Long_Integer_Size); - Set_Elem_Alignment (Any_Integer); - - Set_Integer_Bounds - (Any_Integer, - Typ => Base_Type (Standard_Integer), - Lb => Uint_0, - Hb => Intval (High_Bound (Scalar_Range (Standard_Integer)))); - Make_Name (Any_Integer, "an integer type"); - - Any_Modular := New_Standard_Entity; - Set_Ekind (Any_Modular, E_Modular_Integer_Type); - Set_Scope (Any_Modular, Standard_Standard); - Set_Etype (Any_Modular, Standard_Long_Long_Integer); - Init_Size (Any_Modular, Standard_Long_Long_Integer_Size); - Set_Elem_Alignment (Any_Modular); - Set_Is_Unsigned_Type (Any_Modular); - Make_Name (Any_Modular, "a modular type"); - - Any_Numeric := New_Standard_Entity; - Set_Ekind (Any_Numeric, E_Signed_Integer_Type); - Set_Scope (Any_Numeric, Standard_Standard); - Set_Etype (Any_Numeric, Standard_Long_Long_Integer); - Init_Size (Any_Numeric, Standard_Long_Long_Integer_Size); - Set_Elem_Alignment (Any_Numeric); - Make_Name (Any_Numeric, "a numeric type"); - - Any_Real := New_Standard_Entity; - Set_Ekind (Any_Real, E_Floating_Point_Type); - Set_Scope (Any_Real, Standard_Standard); - Set_Etype (Any_Real, Standard_Long_Long_Float); - Init_Size (Any_Real, - UI_To_Int (Esize (Standard_Long_Long_Float))); - Set_Elem_Alignment (Any_Real); - Make_Name (Any_Real, "a real type"); - - Any_Scalar := New_Standard_Entity; - Set_Ekind (Any_Scalar, E_Signed_Integer_Type); - Set_Scope (Any_Scalar, Standard_Standard); - Set_Etype (Any_Scalar, Any_Scalar); - Init_Size (Any_Scalar, Standard_Integer_Size); - Set_Elem_Alignment (Any_Scalar); - Make_Name (Any_Scalar, "a scalar type"); - - Any_String := New_Standard_Entity; - Set_Ekind (Any_String, E_String_Type); - Set_Scope (Any_String, Standard_Standard); - Set_Etype (Any_String, Any_String); - Set_Component_Type (Any_String, Any_Character); - Init_Size_Align (Any_String); - Make_Name (Any_String, "a string type"); - - declare - Index : Node_Id; - - begin - Index := - Make_Range (Stloc, - Low_Bound => Make_Integer (Uint_0), - High_Bound => Make_Integer (Uint_2 ** Standard_Integer_Size)); - Set_Etype (Index, Standard_Integer); - Set_First_Index (Any_String, Index); - end; - - Standard_Integer_8 := New_Standard_Entity; - Decl := New_Node (N_Full_Type_Declaration, Stloc); - Set_Defining_Identifier (Decl, Standard_Integer_8); - Make_Name (Standard_Integer_8, "integer_8"); - Set_Scope (Standard_Integer_8, Standard_Standard); - Build_Signed_Integer_Type (Standard_Integer_8, 8); - - Standard_Integer_16 := New_Standard_Entity; - Decl := New_Node (N_Full_Type_Declaration, Stloc); - Set_Defining_Identifier (Decl, Standard_Integer_16); - Make_Name (Standard_Integer_16, "integer_16"); - Set_Scope (Standard_Integer_16, Standard_Standard); - Build_Signed_Integer_Type (Standard_Integer_16, 16); - - Standard_Integer_32 := New_Standard_Entity; - Decl := New_Node (N_Full_Type_Declaration, Stloc); - Set_Defining_Identifier (Decl, Standard_Integer_32); - Make_Name (Standard_Integer_32, "integer_32"); - Set_Scope (Standard_Integer_32, Standard_Standard); - Build_Signed_Integer_Type (Standard_Integer_32, 32); - - Standard_Integer_64 := New_Standard_Entity; - Decl := New_Node (N_Full_Type_Declaration, Stloc); - Set_Defining_Identifier (Decl, Standard_Integer_64); - Make_Name (Standard_Integer_64, "integer_64"); - Set_Scope (Standard_Integer_64, Standard_Standard); - Build_Signed_Integer_Type (Standard_Integer_64, 64); - - Standard_Unsigned := New_Standard_Entity; - Decl := New_Node (N_Full_Type_Declaration, Stloc); - Set_Defining_Identifier (Decl, Standard_Unsigned); - Make_Name (Standard_Unsigned, "unsigned"); - - Set_Ekind (Standard_Unsigned, E_Modular_Integer_Type); - Set_Scope (Standard_Unsigned, Standard_Standard); - Set_Etype (Standard_Unsigned, Standard_Unsigned); - Init_Size (Standard_Unsigned, Standard_Integer_Size); - Set_Elem_Alignment (Standard_Unsigned); - Set_Modulus (Standard_Unsigned, - Uint_2 ** Standard_Integer_Size); - Set_Is_Unsigned_Type (Standard_Unsigned); - Set_Size_Known_At_Compile_Time - (Standard_Unsigned); - Set_Is_Known_Valid (Standard_Unsigned, True); - - R_Node := New_Node (N_Range, Stloc); - Set_Low_Bound (R_Node, Make_Integer (Uint_0)); - Set_High_Bound (R_Node, Make_Integer (Modulus (Standard_Unsigned) - 1)); - Set_Etype (Low_Bound (R_Node), Standard_Unsigned); - Set_Etype (High_Bound (R_Node), Standard_Unsigned); - Set_Scalar_Range (Standard_Unsigned, R_Node); - - -- Note: universal integer and universal real are constructed as fully - -- formed signed numeric types, with parameters corresponding to the - -- longest runtime types (Long_Long_Integer and Long_Long_Float). This - -- allows Gigi to properly process references to universal types that - -- are not folded at compile time. - - Universal_Integer := New_Standard_Entity; - Decl := New_Node (N_Full_Type_Declaration, Stloc); - Set_Defining_Identifier (Decl, Universal_Integer); - Make_Name (Universal_Integer, "universal_integer"); - Set_Scope (Universal_Integer, Standard_Standard); - Build_Signed_Integer_Type - (Universal_Integer, Standard_Long_Long_Integer_Size); - - Universal_Real := New_Standard_Entity; - Decl := New_Node (N_Full_Type_Declaration, Stloc); - Set_Defining_Identifier (Decl, Universal_Real); - Make_Name (Universal_Real, "universal_real"); - Set_Scope (Universal_Real, Standard_Standard); - Copy_Float_Type (Universal_Real, Standard_Long_Long_Float); - - -- Note: universal fixed, unlike universal integer and universal real, - -- is never used at runtime, so it does not need to have bounds set. - - Universal_Fixed := New_Standard_Entity; - Decl := New_Node (N_Full_Type_Declaration, Stloc); - Set_Defining_Identifier (Decl, Universal_Fixed); - Make_Name (Universal_Fixed, "universal_fixed"); - Set_Ekind (Universal_Fixed, E_Ordinary_Fixed_Point_Type); - Set_Etype (Universal_Fixed, Universal_Fixed); - Set_Scope (Universal_Fixed, Standard_Standard); - Init_Size (Universal_Fixed, Standard_Long_Long_Integer_Size); - Set_Elem_Alignment (Universal_Fixed); - Set_Size_Known_At_Compile_Time - (Universal_Fixed); - - -- Create type declaration for Duration, using a 64-bit size. The - -- delta and size values depend on the mode set in system.ads. - - Build_Duration : declare - Dlo : Uint; - Dhi : Uint; - Delta_Val : Ureal; - - begin - -- In 32 bit mode, the size is 32 bits, and the delta and - -- small values are set to 20 milliseconds (20.0*(10.0**(-3)). - - if Duration_32_Bits_On_Target then - Dlo := Intval (Type_Low_Bound (Standard_Integer_32)); - Dhi := Intval (Type_High_Bound (Standard_Integer_32)); - Delta_Val := UR_From_Components (UI_From_Int (20), Uint_3, 10); - - -- In standard 64-bit mode, the size is 64-bits and the delta and - -- small values are set to nanoseconds (1.0*(10.0**(-9)) - - else - Dlo := Intval (Type_Low_Bound (Standard_Integer_64)); - Dhi := Intval (Type_High_Bound (Standard_Integer_64)); - Delta_Val := UR_From_Components (Uint_1, Uint_9, 10); - end if; - - Tdef_Node := Make_Ordinary_Fixed_Point_Definition (Stloc, - Delta_Expression => Make_Real_Literal (Stloc, Delta_Val), - Real_Range_Specification => - Make_Real_Range_Specification (Stloc, - Low_Bound => Make_Real_Literal (Stloc, - Realval => Dlo * Delta_Val), - High_Bound => Make_Real_Literal (Stloc, - Realval => Dhi * Delta_Val))); - - Set_Type_Definition (Parent (Standard_Duration), Tdef_Node); - - Set_Ekind (Standard_Duration, E_Ordinary_Fixed_Point_Type); - Set_Etype (Standard_Duration, Standard_Duration); - - if Duration_32_Bits_On_Target then - Init_Size (Standard_Duration, 32); - else - Init_Size (Standard_Duration, 64); - end if; - - Set_Elem_Alignment (Standard_Duration); - Set_Delta_Value (Standard_Duration, Delta_Val); - Set_Small_Value (Standard_Duration, Delta_Val); - Set_Scalar_Range (Standard_Duration, - Real_Range_Specification - (Type_Definition (Parent (Standard_Duration)))); - - -- Normally it does not matter that nodes in package Standard are - -- not marked as analyzed. The Scalar_Range of the fixed-point - -- type Standard_Duration is an exception, because of the special - -- test made in Freeze.Freeze_Fixed_Point_Type. - - Set_Analyzed (Scalar_Range (Standard_Duration)); - - Set_Etype (Type_High_Bound (Standard_Duration), Standard_Duration); - Set_Etype (Type_Low_Bound (Standard_Duration), Standard_Duration); - - Set_Is_Static_Expression (Type_High_Bound (Standard_Duration)); - Set_Is_Static_Expression (Type_Low_Bound (Standard_Duration)); - - Set_Corresponding_Integer_Value - (Type_High_Bound (Standard_Duration), Dhi); - - Set_Corresponding_Integer_Value - (Type_Low_Bound (Standard_Duration), Dlo); - - Set_Size_Known_At_Compile_Time (Standard_Duration); - end Build_Duration; - - -- Build standard exception type. Note that the type name here is - -- actually used in the generated code, so it must be set correctly - - -- ??? Also note that the Import_Code component is now declared - -- as a System.Standard_Library.Exception_Code to enforce run-time - -- library implementation consistency. It's too early here to resort - -- to rtsfind to get the proper node for that type, so we use the - -- closest possible available type node at hand instead. We should - -- probably be fixing this up at some point. - - Standard_Exception_Type := New_Standard_Entity; - Set_Ekind (Standard_Exception_Type, E_Record_Type); - Set_Etype (Standard_Exception_Type, Standard_Exception_Type); - Set_Scope (Standard_Exception_Type, Standard_Standard); - Set_Stored_Constraint - (Standard_Exception_Type, No_Elist); - Init_Size_Align (Standard_Exception_Type); - Set_Size_Known_At_Compile_Time - (Standard_Exception_Type, True); - Make_Name (Standard_Exception_Type, "exception"); - - Make_Component - (Standard_Exception_Type, Standard_Boolean, "Not_Handled_By_Others"); - Make_Component - (Standard_Exception_Type, Standard_Character, "Lang"); - Make_Component - (Standard_Exception_Type, Standard_Natural, "Name_Length"); - Make_Component - (Standard_Exception_Type, Standard_A_Char, "Full_Name"); - Make_Component - (Standard_Exception_Type, Standard_A_Char, "HTable_Ptr"); - Make_Component - (Standard_Exception_Type, Standard_Unsigned, "Import_Code"); - Make_Component - (Standard_Exception_Type, Standard_A_Char, "Raise_Hook"); - - -- Build tree for record declaration, for use by the back-end - - declare - Comp_List : List_Id; - Comp : Entity_Id; - - begin - Comp := First_Entity (Standard_Exception_Type); - Comp_List := New_List; - while Present (Comp) loop - Append ( - Make_Component_Declaration (Stloc, - Defining_Identifier => Comp, - Component_Definition => - Make_Component_Definition (Stloc, - Aliased_Present => False, - Subtype_Indication => New_Occurrence_Of (Etype (Comp), - Stloc))), - Comp_List); - - Next_Entity (Comp); - end loop; - - Decl := Make_Full_Type_Declaration (Stloc, - Defining_Identifier => Standard_Exception_Type, - Type_Definition => - Make_Record_Definition (Stloc, - End_Label => Empty, - Component_List => - Make_Component_List (Stloc, - Component_Items => Comp_List))); - end; - - Append (Decl, Decl_S); - - Layout_Type (Standard_Exception_Type); - - -- Create declarations of standard exceptions - - Build_Exception (S_Constraint_Error); - Build_Exception (S_Program_Error); - Build_Exception (S_Storage_Error); - Build_Exception (S_Tasking_Error); - - -- Numeric_Error is a normal exception in Ada 83, but in Ada 95 - -- it is a renaming of Constraint_Error. Is this test too early??? - - if Ada_Version = Ada_83 then - Build_Exception (S_Numeric_Error); - - else - Decl := New_Node (N_Exception_Renaming_Declaration, Stloc); - E_Id := Standard_Entity (S_Numeric_Error); - - Set_Ekind (E_Id, E_Exception); - Set_Exception_Code (E_Id, Uint_0); - Set_Etype (E_Id, Standard_Exception_Type); - Set_Is_Public (E_Id); - Set_Renamed_Entity (E_Id, Standard_Entity (S_Constraint_Error)); - - Set_Defining_Identifier (Decl, E_Id); - Append (Decl, Decl_S); - - Ident_Node := New_Node (N_Identifier, Stloc); - Set_Chars (Ident_Node, Chars (Standard_Entity (S_Constraint_Error))); - Set_Entity (Ident_Node, Standard_Entity (S_Constraint_Error)); - Set_Name (Decl, Ident_Node); - end if; - - -- Abort_Signal is an entity that does not get made visible - - Abort_Signal := New_Standard_Entity; - Set_Chars (Abort_Signal, Name_uAbort_Signal); - Set_Ekind (Abort_Signal, E_Exception); - Set_Exception_Code (Abort_Signal, Uint_0); - Set_Etype (Abort_Signal, Standard_Exception_Type); - Set_Scope (Abort_Signal, Standard_Standard); - Set_Is_Public (Abort_Signal, True); - Decl := - Make_Exception_Declaration (Stloc, - Defining_Identifier => Abort_Signal); - - -- Create defining identifiers for shift operator entities. Note - -- that these entities are used only for marking shift operators - -- generated internally, and hence need no structure, just a name - -- and a unique identity. - - Standard_Op_Rotate_Left := New_Standard_Entity; - Set_Chars (Standard_Op_Rotate_Left, Name_Rotate_Left); - Set_Ekind (Standard_Op_Rotate_Left, E_Operator); - - Standard_Op_Rotate_Right := New_Standard_Entity; - Set_Chars (Standard_Op_Rotate_Right, Name_Rotate_Right); - Set_Ekind (Standard_Op_Rotate_Right, E_Operator); - - Standard_Op_Shift_Left := New_Standard_Entity; - Set_Chars (Standard_Op_Shift_Left, Name_Shift_Left); - Set_Ekind (Standard_Op_Shift_Left, E_Operator); - - Standard_Op_Shift_Right := New_Standard_Entity; - Set_Chars (Standard_Op_Shift_Right, Name_Shift_Right); - Set_Ekind (Standard_Op_Shift_Right, E_Operator); - - Standard_Op_Shift_Right_Arithmetic := New_Standard_Entity; - Set_Chars (Standard_Op_Shift_Right_Arithmetic, - Name_Shift_Right_Arithmetic); - Set_Ekind (Standard_Op_Shift_Right_Arithmetic, - E_Operator); - - -- Create standard operator declarations - - Create_Operators; - - -- Initialize visibility table with entities in Standard - - for E in Standard_Entity_Type loop - if Ekind (Standard_Entity (E)) /= E_Operator then - Set_Name_Entity_Id - (Chars (Standard_Entity (E)), Standard_Entity (E)); - Set_Homonym (Standard_Entity (E), Empty); - end if; - - if E not in S_ASCII_Names then - Set_Scope (Standard_Entity (E), Standard_Standard); - Set_Is_Immediately_Visible (Standard_Entity (E)); - end if; - end loop; - - -- The predefined package Standard itself does not have a scope; - -- it is the only entity in the system not to have one, and this - -- is what identifies the package to Gigi. - - Set_Scope (Standard_Standard, Empty); - - -- Set global variables indicating last Id values and version - - Last_Standard_Node_Id := Last_Node_Id; - Last_Standard_List_Id := Last_List_Id; - - -- The Error node has an Etype of Any_Type to help error recovery - - Set_Etype (Error, Any_Type); - - -- Print representation of standard if switch set - - if Opt.Print_Standard then - Print_Standard; - end if; - end Create_Standard; - - ------------------------------------ - -- Create_Unconstrained_Base_Type -- - ------------------------------------ - - procedure Create_Unconstrained_Base_Type - (E : Entity_Id; - K : Entity_Kind) - is - New_Ent : constant Entity_Id := New_Copy (E); - - begin - Set_Ekind (E, K); - Set_Is_Constrained (E, True); - Set_Is_First_Subtype (E, True); - Set_Etype (E, New_Ent); - - Append_Entity (New_Ent, Standard_Standard); - Set_Is_Constrained (New_Ent, False); - Set_Etype (New_Ent, New_Ent); - Set_Is_Known_Valid (New_Ent, True); - - if K = E_Signed_Integer_Subtype then - Set_Etype (Low_Bound (Scalar_Range (E)), New_Ent); - Set_Etype (High_Bound (Scalar_Range (E)), New_Ent); - end if; - - end Create_Unconstrained_Base_Type; - - -------------------- - -- Identifier_For -- - -------------------- - - function Identifier_For (S : Standard_Entity_Type) return Node_Id is - Ident_Node : Node_Id; - begin - Ident_Node := New_Node (N_Identifier, Stloc); - Set_Chars (Ident_Node, Chars (Standard_Entity (S))); - Set_Entity (Ident_Node, Standard_Entity (S)); - return Ident_Node; - end Identifier_For; - - -------------------- - -- Make_Component -- - -------------------- - - procedure Make_Component - (Rec : Entity_Id; - Typ : Entity_Id; - Nam : String) - is - Id : constant Entity_Id := New_Standard_Entity; - - begin - Set_Ekind (Id, E_Component); - Set_Etype (Id, Typ); - Set_Scope (Id, Rec); - Init_Component_Location (Id); - - Set_Original_Record_Component (Id, Id); - Make_Name (Id, Nam); - Append_Entity (Id, Rec); - end Make_Component; - - ----------------- - -- Make_Formal -- - ----------------- - - function Make_Formal - (Typ : Entity_Id; - Formal_Name : String) return Entity_Id - is - Formal : Entity_Id; - - begin - Formal := New_Standard_Entity; - - Set_Ekind (Formal, E_In_Parameter); - Set_Mechanism (Formal, Default_Mechanism); - Set_Scope (Formal, Standard_Standard); - Set_Etype (Formal, Typ); - Make_Name (Formal, Formal_Name); - - return Formal; - end Make_Formal; - - ------------------ - -- Make_Integer -- - ------------------ - - function Make_Integer (V : Uint) return Node_Id is - N : constant Node_Id := Make_Integer_Literal (Stloc, V); - begin - Set_Is_Static_Expression (N); - return N; - end Make_Integer; - - --------------- - -- Make_Name -- - --------------- - - procedure Make_Name (Id : Entity_Id; Nam : String) is - begin - for J in 1 .. Nam'Length loop - Name_Buffer (J) := Fold_Lower (Nam (Nam'First + (J - 1))); - end loop; - - Name_Len := Nam'Length; - Set_Chars (Id, Name_Find); - end Make_Name; - - ------------------ - -- New_Operator -- - ------------------ - - function New_Operator (Op : Name_Id; Typ : Entity_Id) return Entity_Id is - Ident_Node : Entity_Id; - - begin - Ident_Node := Make_Defining_Identifier (Stloc, Op); - - Set_Is_Pure (Ident_Node, True); - Set_Ekind (Ident_Node, E_Operator); - Set_Etype (Ident_Node, Typ); - Set_Scope (Ident_Node, Standard_Standard); - Set_Homonym (Ident_Node, Get_Name_Entity_Id (Op)); - Set_Convention (Ident_Node, Convention_Intrinsic); - - Set_Is_Immediately_Visible (Ident_Node, True); - Set_Is_Intrinsic_Subprogram (Ident_Node, True); - - Set_Name_Entity_Id (Op, Ident_Node); - Append_Entity (Ident_Node, Standard_Standard); - return Ident_Node; - end New_Operator; - - ------------------------- - -- New_Standard_Entity -- - ------------------------- - - function New_Standard_Entity - (New_Node_Kind : Node_Kind := N_Defining_Identifier) return Entity_Id - is - E : constant Entity_Id := New_Entity (New_Node_Kind, Stloc); - - begin - -- All standard entities are Pure and Public - - Set_Is_Pure (E); - Set_Is_Public (E); - - -- All standard entity names are analyzed manually, and are thus - -- frozen as soon as they are created. - - Set_Is_Frozen (E); - - -- Set debug information required for all standard types - - Set_Needs_Debug_Info (E); - - -- All standard entities are built with fully qualified names, so - -- set the flag to prevent an abortive attempt at requalification! - - Set_Has_Qualified_Name (E); - - -- Return newly created entity to be completed by caller - - return E; - end New_Standard_Entity; - - -------------------- - -- Print_Standard -- - -------------------- - - procedure Print_Standard is - - procedure P (Item : String) renames Output.Write_Line; - -- Short-hand, since we do a lot of line writes here! - - procedure P_Int_Range (Size : Pos); - -- Prints the range of an integer based on its Size - - procedure P_Float_Range (Id : Entity_Id); - -- Prints the bounds range for the given float type entity - - procedure P_Float_Type (Id : Entity_Id); - -- Prints the type declaration of the given float type entity - - procedure P_Mixed_Name (Id : Name_Id); - -- Prints Id in mixed case - - ------------------- - -- P_Float_Range -- - ------------------- - - procedure P_Float_Range (Id : Entity_Id) is - begin - Write_Str (" range "); - UR_Write (Realval (Type_Low_Bound (Id))); - Write_Str (" .. "); - UR_Write (Realval (Type_High_Bound (Id))); - Write_Str (";"); - Write_Eol; - end P_Float_Range; - - ------------------ - -- P_Float_Type -- - ------------------ - - procedure P_Float_Type (Id : Entity_Id) is - begin - Write_Str (" type "); - P_Mixed_Name (Chars (Id)); - Write_Str (" is digits "); - Write_Int (UI_To_Int (Digits_Value (Id))); - Write_Eol; - P_Float_Range (Id); - Write_Str (" for "); - P_Mixed_Name (Chars (Id)); - Write_Str ("'Size use "); - Write_Int (UI_To_Int (RM_Size (Id))); - Write_Line (";"); - Write_Eol; - end P_Float_Type; - - ----------------- - -- P_Int_Range -- - ----------------- - - procedure P_Int_Range (Size : Pos) is - begin - Write_Str (" is range -(2 **"); - Write_Int (Size - 1); - Write_Str (")"); - Write_Str (" .. +(2 **"); - Write_Int (Size - 1); - Write_Str (" - 1);"); - Write_Eol; - end P_Int_Range; - - ------------------ - -- P_Mixed_Name -- - ------------------ - - procedure P_Mixed_Name (Id : Name_Id) is - begin - Get_Name_String (Id); - - for J in 1 .. Name_Len loop - if J = 1 or else Name_Buffer (J - 1) = '_' then - Name_Buffer (J) := Fold_Upper (Name_Buffer (J)); - end if; - end loop; - - Write_Str (Name_Buffer (1 .. Name_Len)); - end P_Mixed_Name; - - -- Start of processing for Print_Standard - - begin - P ("-- Representation of package Standard"); - Write_Eol; - P ("-- This is not accurate Ada, since new base types cannot be "); - P ("-- created, but the listing shows the target dependent"); - P ("-- characteristics of the Standard types for this compiler"); - Write_Eol; - - P ("package Standard is"); - P ("pragma Pure (Standard);"); - Write_Eol; - - P (" type Boolean is (False, True);"); - P (" for Boolean'Size use 1;"); - P (" for Boolean use (False => 0, True => 1);"); - Write_Eol; - - -- Integer types - - Write_Str (" type Integer"); - P_Int_Range (Standard_Integer_Size); - Write_Str (" for Integer'Size use "); - Write_Int (Standard_Integer_Size); - P (";"); - Write_Eol; - - P (" subtype Natural is Integer range 0 .. Integer'Last;"); - P (" subtype Positive is Integer range 1 .. Integer'Last;"); - Write_Eol; - - Write_Str (" type Short_Short_Integer"); - P_Int_Range (Standard_Short_Short_Integer_Size); - Write_Str (" for Short_Short_Integer'Size use "); - Write_Int (Standard_Short_Short_Integer_Size); - P (";"); - Write_Eol; - - Write_Str (" type Short_Integer"); - P_Int_Range (Standard_Short_Integer_Size); - Write_Str (" for Short_Integer'Size use "); - Write_Int (Standard_Short_Integer_Size); - P (";"); - Write_Eol; - - Write_Str (" type Long_Integer"); - P_Int_Range (Standard_Long_Integer_Size); - Write_Str (" for Long_Integer'Size use "); - Write_Int (Standard_Long_Integer_Size); - P (";"); - Write_Eol; - - Write_Str (" type Long_Long_Integer"); - P_Int_Range (Standard_Long_Long_Integer_Size); - Write_Str (" for Long_Long_Integer'Size use "); - Write_Int (Standard_Long_Long_Integer_Size); - P (";"); - Write_Eol; - - -- Floating point types - - P_Float_Type (Standard_Short_Float); - P_Float_Type (Standard_Float); - P_Float_Type (Standard_Long_Float); - P_Float_Type (Standard_Long_Long_Float); - - P (" type Character is (...)"); - Write_Str (" for Character'Size use "); - Write_Int (Standard_Character_Size); - P (";"); - P (" -- See RM A.1(35) for details of this type"); - Write_Eol; - - P (" type Wide_Character is (...)"); - Write_Str (" for Wide_Character'Size use "); - Write_Int (Standard_Wide_Character_Size); - P (";"); - P (" -- See RM A.1(36) for details of this type"); - Write_Eol; - - P (" type Wide_Wide_Character is (...)"); - Write_Str (" for Wide_Wide_Character'Size use "); - Write_Int (Standard_Wide_Wide_Character_Size); - P (";"); - P (" -- See RM A.1(36) for details of this type"); - - P (" type String is array (Positive range <>) of Character;"); - P (" pragma Pack (String);"); - Write_Eol; - - P (" type Wide_String is array (Positive range <>)" & - " of Wide_Character;"); - P (" pragma Pack (Wide_String);"); - Write_Eol; - - P (" type Wide_Wide_String is array (Positive range <>)" & - " of Wide_Wide_Character;"); - P (" pragma Pack (Wide_Wide_String);"); - Write_Eol; - - -- We only have one representation each for 32-bit and 64-bit sizes, - -- so select the right one based on Duration_32_Bits_On_Target. - - if Duration_32_Bits_On_Target then - P (" type Duration is delta 0.020"); - P (" range -((2 ** 31 - 1) * 0.020) .."); - P (" +((2 ** 31 - 1) * 0.020);"); - P (" for Duration'Small use 0.020;"); - - else - P (" type Duration is delta 0.000000001"); - P (" range -((2 ** 63 - 1) * 0.000000001) .."); - P (" +((2 ** 63 - 1) * 0.000000001);"); - P (" for Duration'Small use 0.000000001;"); - end if; - - Write_Eol; - - P (" Constraint_Error : exception;"); - P (" Program_Error : exception;"); - P (" Storage_Error : exception;"); - P (" Tasking_Error : exception;"); - P (" Numeric_Error : exception renames Constraint_Error;"); - Write_Eol; - - P ("end Standard;"); - end Print_Standard; - - ------------------------- - -- Register_Float_Type -- - ------------------------- - - procedure Register_Float_Type - (Name : C_String; - Digs : Natural; - Complex : Boolean; - Count : Natural; - Float_Rep : Float_Rep_Kind; - Precision : Positive; - Size : Positive; - Alignment : Natural) - is - T : String (1 .. Name'Length); - Last : Natural := 0; - - procedure Dump; - -- Dump information given by the back end for the type to register - - procedure Dump is - begin - Write_Str ("type " & T (1 .. Last) & " is "); - - if Count > 0 then - Write_Str ("array (1 .. "); - Write_Int (Int (Count)); - - if Complex then - Write_Str (", 1 .. 2"); - end if; - - Write_Str (") of "); - - elsif Complex then - Write_Str ("array (1 .. 2) of "); - end if; - - if Digs > 0 then - Write_Str ("digits "); - Write_Int (Int (Digs)); - Write_Line (";"); - - Write_Str ("pragma Float_Representation ("); - - case Float_Rep is - when IEEE_Binary => Write_Str ("IEEE"); - when VAX_Native => - case Digs is - when 6 => Write_Str ("VAXF"); - when 9 => Write_Str ("VAXD"); - when 15 => Write_Str ("VAXG"); - when others => Write_Str ("VAX_"); Write_Int (Int (Digs)); - end case; - when AAMP => Write_Str ("AAMP"); - end case; - Write_Line (", " & T & ");"); - - else - Write_Str ("mod 2**"); - Write_Int (Int (Precision / Positive'Max (1, Count))); - Write_Line (";"); - end if; - - if Precision = Size then - Write_Str ("for " & T (1 .. Last) & "'Size use "); - Write_Int (Int (Size)); - Write_Line (";"); - - else - Write_Str ("for " & T (1 .. Last) & "'Value_Size use "); - Write_Int (Int (Precision)); - Write_Line (";"); - - Write_Str ("for " & T (1 .. Last) & "'Object_Size use "); - Write_Int (Int (Size)); - Write_Line (";"); - end if; - - Write_Str ("for " & T & "'Alignment use "); - Write_Int (Int (Alignment / 8)); - Write_Line (";"); - end Dump; - - begin - for J in T'Range loop - T (J) := Name (Name'First + J - 1); - if T (J) = ASCII.NUL then - Last := J - 1; - exit; - end if; - end loop; - - if Debug_Flag_Dot_B then - Dump; - end if; - - if Digs > 0 and then not Complex and then Count = 0 then - declare - Ent : constant Entity_Id := New_Standard_Entity; - begin - Set_Defining_Identifier - (New_Node (N_Full_Type_Declaration, Stloc), Ent); - Make_Name (Ent, T (1 .. Last)); - Set_Scope (Ent, Standard_Standard); - Build_Float_Type (Ent, Int (Size), Float_Rep, Pos (Digs)); - Set_RM_Size (Ent, UI_From_Int (Int (Precision))); - Set_Alignment (Ent, UI_From_Int (Int (Alignment / 8))); - - if No (Back_End_Float_Types) then - Back_End_Float_Types := New_Elmt_List; - end if; - - Append_Elmt (Ent, Back_End_Float_Types); - end; - end if; - end Register_Float_Type; - - ---------------------- - -- Set_Float_Bounds -- - ---------------------- - - procedure Set_Float_Bounds (Id : Entity_Id) is - L : Node_Id; - -- Low bound of literal value - - H : Node_Id; - -- High bound of literal value - - R : Node_Id; - -- Range specification - - Radix : constant Uint := Machine_Radix_Value (Id); - Mantissa : constant Uint := Machine_Mantissa_Value (Id); - Emax : constant Uint := Machine_Emax_Value (Id); - Significand : constant Uint := Radix ** Mantissa - 1; - Exponent : constant Uint := Emax - Mantissa; - - begin - -- Note: for the call from Cstand to initially create the types in - -- Standard, Float_Rep will never be VAX_Native. Circuitry in Sem_Vfpt - -- will adjust these types appropriately VAX_Native if a pragma - -- Float_Representation (VAX_Float) is used. - - H := Make_Float_Literal (Stloc, Radix, Significand, Exponent); - L := Make_Float_Literal (Stloc, Radix, -Significand, Exponent); - - Set_Etype (L, Id); - Set_Is_Static_Expression (L); - - Set_Etype (H, Id); - Set_Is_Static_Expression (H); - - R := New_Node (N_Range, Stloc); - Set_Low_Bound (R, L); - Set_High_Bound (R, H); - Set_Includes_Infinities (R, True); - Set_Scalar_Range (Id, R); - Set_Etype (R, Id); - Set_Parent (R, Id); - end Set_Float_Bounds; - - ------------------------ - -- Set_Integer_Bounds -- - ------------------------ - - procedure Set_Integer_Bounds - (Id : Entity_Id; - Typ : Entity_Id; - Lb : Uint; - Hb : Uint) - is - L : Node_Id; -- Low bound of literal value - H : Node_Id; -- High bound of literal value - R : Node_Id; -- Range specification - - begin - L := Make_Integer (Lb); - H := Make_Integer (Hb); - - Set_Etype (L, Typ); - Set_Etype (H, Typ); - - R := New_Node (N_Range, Stloc); - Set_Low_Bound (R, L); - Set_High_Bound (R, H); - Set_Scalar_Range (Id, R); - Set_Etype (R, Typ); - Set_Parent (R, Id); - Set_Is_Unsigned_Type (Id, Lb >= 0); - end Set_Integer_Bounds; - -end CStand; |