| ------------------------------------------------------------------------------ |
| -- -- |
| -- GNAT COMPILER COMPONENTS -- |
| -- -- |
| -- G E T _ T A R G -- |
| -- -- |
| -- S p e c -- |
| -- -- |
| -- Copyright (C) 1992-2014, 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. -- |
| -- -- |
| ------------------------------------------------------------------------------ |
| |
| -- This package provides an Import to the C functions which provide |
| -- values related to types on the target system. It is only needed for |
| -- exp_dbug and the elaboration of ttypes, via the Set_Targs package. |
| -- It also contains the routine for registering floating-point types. |
| |
| -- NOTE: Any changes in this package must be reflected in aa_getta.adb |
| -- and any other version in the various back ends. |
| |
| -- Note that all these values return sizes of C types with corresponding |
| -- names. This allows GNAT to define the corresponding Ada types to have |
| -- the same representation. There is one exception to this general rule: |
| -- the Wide_Character_Type uses twice the size of a C char, instead of the |
| -- size of wchar_t. |
| |
| with Einfo; use Einfo; |
| with Types; use Types; |
| |
| package Get_Targ is |
| |
| -- Functions returning individual runtime values |
| |
| function Get_Bits_Per_Unit return Pos; |
| -- System.Storage_Unit |
| |
| function Get_Bits_Per_Word return Pos; |
| -- System.Word_Size |
| |
| function Get_Char_Size return Pos; |
| -- Size of Standard.Character |
| |
| function Get_Wchar_T_Size return Pos; |
| -- Size of Interfaces.C.wchar_t |
| |
| function Get_Short_Size return Pos; |
| -- Size of Standard.Short_Integer |
| |
| function Get_Int_Size return Pos; |
| -- Size of Standard.Integer |
| |
| function Get_Long_Size return Pos; |
| -- Size of Standard.Long_Integer |
| |
| function Get_Long_Long_Size return Pos; |
| -- Size of Standard.Long_Long_Integer |
| |
| function Get_Pointer_Size return Pos; |
| -- Size of System.Address |
| |
| function Get_Maximum_Alignment return Pos; |
| -- Maximum supported alignment |
| |
| function Get_Float_Words_BE return Nat; |
| -- Non-zero iff float words big endian |
| |
| function Get_Words_BE return Nat; |
| -- Non-zero iff integer words big endian |
| |
| function Get_Bytes_BE return Nat; |
| -- Non-zero iff bytes big-endian |
| |
| function Get_Bits_BE return Nat; |
| -- Non-zero iff bit order big endian |
| |
| function Get_Strict_Alignment return Nat; |
| -- Non-zero if target requires strict alignent |
| |
| function Get_System_Allocator_Alignment return Nat; |
| -- Alignment guaranteed by malloc falls |
| |
| function Get_Double_Float_Alignment return Nat; |
| -- Alignment required for Long_Float or 0 if no special requirement |
| |
| function Get_Double_Scalar_Alignment return Nat; |
| -- Alignment required for Long_Long_Integer or larger integer types |
| -- or 0 if no special requirement. |
| |
| function Get_Short_Enums return Int; |
| -- Returns non-zero if we are in short enums mode, where foreign convention |
| -- (in particular C and C++) enumeration types will be sized as in Ada, |
| -- using the shortest possibility from 8,16,32 bits, signed or unsigned. |
| -- A zero value means Short_Enums are not in use, and in this case all |
| -- foreign convention enumeration types are given the same size as c int. |
| |
| -- Other subprograms |
| |
| function Get_Max_Unaligned_Field return Pos; |
| -- Returns the maximum supported size in bits for a field that is |
| -- not aligned on a storage unit boundary. |
| |
| function Width_From_Size (Size : Pos) return Pos; |
| function Digits_From_Size (Size : Pos) return Pos; |
| -- Calculate values for 'Width or 'Digits from 'Size |
| |
| type C_String is array (0 .. 255) of aliased Character; |
| pragma Convention (C, C_String); |
| |
| type Register_Type_Proc is access procedure |
| (C_Name : C_String; -- Nul-terminated string with name of type |
| Digs : Natural; -- 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_Type_Proc); |
| -- Call back procedure for Register_Back_End_Types. This is to be used by |
| -- Create_Standard to create predefined types for all types supported by |
| -- the back end. |
| |
| procedure Register_Back_End_Types (Call_Back : Register_Type_Proc); |
| -- Calls the Call_Back function with information for each supported type |
| |
| function Get_Back_End_Config_File return String_Ptr; |
| -- Return the back end configuration file, or null if none. If non-null, |
| -- this file should be used instead of calling the various Get_xxx |
| -- functions in this package. |
| |
| end Get_Targ; |
