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307 lines
8.1 KiB
Ada
307 lines
8.1 KiB
Ada
------------------------------------------------------------------------------
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-- --
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-- GNAT COMPILER COMPONENTS --
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-- --
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-- G E T _ T A R G --
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-- --
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-- B o d y --
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-- --
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-- Copyright (C) 1992-2022, Free Software Foundation, Inc. --
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-- --
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-- GNAT is free software; you can redistribute it and/or modify it under --
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-- terms of the GNU General Public License as published by the Free Soft- --
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-- ware Foundation; either version 3, or (at your option) any later ver- --
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-- sion. GNAT is distributed in the hope that it will be useful, but WITH- --
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-- OUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY --
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-- or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License --
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-- for more details. You should have received a copy of the GNU General --
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-- Public License distributed with GNAT; see file COPYING3. If not, go to --
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-- http://www.gnu.org/licenses for a complete copy of the license. --
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-- --
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------------------------------------------------------------------------------
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-- Version shared by various Ada based back-ends (e.g. gnat2scil, gnat2why)
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with System.OS_Lib; use System.OS_Lib;
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with GNAT.Directory_Operations; use GNAT.Directory_Operations;
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package body Get_Targ is
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-----------------------
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-- Get_Bits_Per_Unit --
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-----------------------
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function Get_Bits_Per_Unit return Pos is
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begin
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return 8;
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end Get_Bits_Per_Unit;
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-----------------------
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-- Get_Bits_Per_Word --
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-----------------------
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function Get_Bits_Per_Word return Pos is
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begin
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return 32;
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end Get_Bits_Per_Word;
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-------------------
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-- Get_Char_Size --
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-------------------
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function Get_Char_Size return Pos is
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begin
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return 8;
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end Get_Char_Size;
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----------------------
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-- Get_Wchar_T_Size --
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----------------------
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function Get_Wchar_T_Size return Pos is
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begin
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return 16;
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end Get_Wchar_T_Size;
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--------------------
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-- Get_Short_Size --
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--------------------
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function Get_Short_Size return Pos is
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begin
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return 16;
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end Get_Short_Size;
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------------------
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-- Get_Int_Size --
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------------------
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function Get_Int_Size return Pos is
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begin
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return 32;
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end Get_Int_Size;
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-------------------
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-- Get_Long_Size --
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-------------------
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function Get_Long_Size return Pos is
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begin
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return 64;
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end Get_Long_Size;
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------------------------
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-- Get_Long_Long_Size --
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------------------------
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function Get_Long_Long_Size return Pos is
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begin
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return 64;
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end Get_Long_Long_Size;
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-----------------------------
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-- Get_Long_Long_Long_Size --
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-----------------------------
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function Get_Long_Long_Long_Size return Pos is
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begin
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return 64;
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end Get_Long_Long_Long_Size;
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----------------------
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-- Get_Pointer_Size --
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----------------------
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function Get_Pointer_Size return Pos is
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begin
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return 64;
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end Get_Pointer_Size;
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---------------------------
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-- Get_Maximum_Alignment --
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---------------------------
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function Get_Maximum_Alignment return Pos is
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begin
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return 4;
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end Get_Maximum_Alignment;
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------------------------
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-- Get_Float_Words_BE --
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------------------------
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function Get_Float_Words_BE return Nat is
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begin
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return 1;
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end Get_Float_Words_BE;
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------------------
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-- Get_Words_BE --
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------------------
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function Get_Words_BE return Nat is
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begin
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return 1;
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end Get_Words_BE;
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------------------
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-- Get_Bytes_BE --
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------------------
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function Get_Bytes_BE return Nat is
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begin
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return 1;
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end Get_Bytes_BE;
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-----------------
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-- Get_Bits_BE --
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-----------------
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function Get_Bits_BE return Nat is
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begin
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return 1;
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end Get_Bits_BE;
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---------------------
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-- Get_Short_Enums --
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---------------------
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function Get_Short_Enums return Int is
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begin
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return 0;
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end Get_Short_Enums;
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--------------------------
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-- Get_Strict_Alignment --
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--------------------------
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function Get_Strict_Alignment return Nat is
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begin
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return 1;
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end Get_Strict_Alignment;
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------------------------------------
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-- Get_System_Allocator_Alignment --
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------------------------------------
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function Get_System_Allocator_Alignment return Nat is
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begin
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return 1;
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end Get_System_Allocator_Alignment;
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--------------------------------
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-- Get_Double_Float_Alignment --
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--------------------------------
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function Get_Double_Float_Alignment return Nat is
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begin
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return 0;
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end Get_Double_Float_Alignment;
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---------------------------------
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-- Get_Double_Scalar_Alignment --
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---------------------------------
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function Get_Double_Scalar_Alignment return Nat is
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begin
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return 0;
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end Get_Double_Scalar_Alignment;
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-----------------------------
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-- Get_Max_Unaligned_Field --
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-----------------------------
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function Get_Max_Unaligned_Field return Pos is
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begin
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return 64; -- Can be different on some targets
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end Get_Max_Unaligned_Field;
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-----------------------------
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-- Register_Back_End_Types --
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-----------------------------
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procedure Register_Back_End_Types (Call_Back : Register_Type_Proc) is
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Float_Str : C_String := (others => ASCII.NUL);
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Double_Str : C_String := (others => ASCII.NUL);
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begin
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Float_Str (Float_Str'First .. Float_Str'First + 4) := "float";
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Call_Back
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(C_Name => Float_Str, Digs => 6, Complex => False, Count => 0,
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Float_Rep => IEEE_Binary,
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Precision => 32, Size => 32, Alignment => 32);
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Double_Str (Double_Str'First .. Double_Str'First + 5) := "double";
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Call_Back
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(C_Name => Double_Str,
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Digs => 15,
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Complex => False,
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Count => 0,
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Float_Rep => IEEE_Binary,
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Precision => 64,
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Size => 64,
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Alignment => 64);
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end Register_Back_End_Types;
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------------------------------
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-- Get_Back_End_Config_File --
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------------------------------
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function Get_Back_End_Config_File return String_Ptr is
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function Exec_Name return String;
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-- Return name of the current executable (from argv[0])
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function Get_Target_File (Dir : String) return String_Ptr;
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-- Return Dir & "target.atp" if found, null otherwise
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---------------
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-- Exec_Name --
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---------------
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function Exec_Name return String is
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type Arg_Array is array (Nat) of Big_String_Ptr;
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type Arg_Array_Ptr is access all Arg_Array;
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gnat_argv : Arg_Array_Ptr;
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pragma Import (C, gnat_argv);
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begin
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for J in 1 .. Natural'Last loop
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if gnat_argv (0) (J) = ASCII.NUL then
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return gnat_argv (0) (1 .. J - 1);
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end if;
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end loop;
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raise Program_Error;
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end Exec_Name;
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---------------------
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-- Get_Target_File --
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---------------------
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function Get_Target_File (Dir : String) return String_Ptr is
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F : constant String := Dir & "target.atp";
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begin
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if Is_Regular_File (F) then
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return new String'(F);
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else
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return null;
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end if;
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end Get_Target_File;
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Exec : constant String := Exec_Name;
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-- Start of processing for Get_Back_End_Config_File
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begin
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if Is_Absolute_Path (Exec) then
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return Get_Target_File (Dir_Name (Exec));
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else
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return Get_Target_File (Dir_Name (Locate_Exec_On_Path (Exec).all));
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end if;
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end Get_Back_End_Config_File;
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end Get_Targ;
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