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653aef86bc
version. Note that this version now produces executables that are covered by the GPL as opposed to the previous version which was covered by the modified GPL. Also note that the GNAT sources in the stock GCC-4 tree are not under this restriction. A new port based on the sources in GCC-4 will come when I get the time.
154 lines
7.3 KiB
Ada
154 lines
7.3 KiB
Ada
------------------------------------------------------------------------------
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-- --
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-- GNAT RUN-TIME COMPONENTS --
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-- --
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-- S Y S T E M --
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-- --
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-- S p e c --
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-- (FreeBSD/x86 Version) --
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-- --
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-- Copyright (C) 1992-2005, Free Software Foundation, Inc. --
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-- --
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-- This specification is derived from the Ada Reference Manual for use with --
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-- GNAT. The copyright notice above, and the license provisions that follow --
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-- apply solely to the contents of the part following the private keyword. --
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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 2, 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 COPYING. If not, write --
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-- to the Free Software Foundation, 51 Franklin Street, Fifth Floor, --
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-- Boston, MA 02110-1301, USA. --
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-- --
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-- As a special exception, if other files instantiate generics from this --
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-- unit, or you link this unit with other files to produce an executable, --
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-- this unit does not by itself cause the resulting executable to be --
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-- covered by the GNU General Public License. This exception does not --
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-- however invalidate any other reasons why the executable file might be --
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-- covered by the GNU Public License. --
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-- --
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-- GNAT was originally developed by the GNAT team at New York University. --
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-- Extensive contributions were provided by Ada Core Technologies Inc. --
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-- --
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------------------------------------------------------------------------------
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package System is
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pragma Pure;
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-- Note that we take advantage of the implementation permission to make
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-- this unit Pure instead of Preelaborable; see RM 13.7.1(15). In Ada
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-- 2005, this is Pure in any case (AI-362).
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type Name is (SYSTEM_NAME_GNAT);
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System_Name : constant Name := SYSTEM_NAME_GNAT;
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-- System-Dependent Named Numbers
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Min_Int : constant := Long_Long_Integer'First;
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Max_Int : constant := Long_Long_Integer'Last;
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Max_Binary_Modulus : constant := 2 ** Long_Long_Integer'Size;
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Max_Nonbinary_Modulus : constant := Integer'Last;
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Max_Base_Digits : constant := Long_Long_Float'Digits;
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Max_Digits : constant := Long_Long_Float'Digits;
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Max_Mantissa : constant := 63;
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Fine_Delta : constant := 2.0 ** (-Max_Mantissa);
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Tick : constant := 0.000_001;
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-- Storage-related Declarations
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type Address is private;
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Null_Address : constant Address;
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Storage_Unit : constant := 8;
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Word_Size : constant := 32;
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Memory_Size : constant := 2 ** 32;
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-- Address comparison
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function "<" (Left, Right : Address) return Boolean;
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function "<=" (Left, Right : Address) return Boolean;
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function ">" (Left, Right : Address) return Boolean;
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function ">=" (Left, Right : Address) return Boolean;
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function "=" (Left, Right : Address) return Boolean;
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pragma Import (Intrinsic, "<");
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pragma Import (Intrinsic, "<=");
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pragma Import (Intrinsic, ">");
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pragma Import (Intrinsic, ">=");
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pragma Import (Intrinsic, "=");
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-- Other System-Dependent Declarations
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type Bit_Order is (High_Order_First, Low_Order_First);
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Default_Bit_Order : constant Bit_Order := Low_Order_First;
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-- Priority-related Declarations (RM D.1)
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Max_Priority : constant Positive := 30;
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Max_Interrupt_Priority : constant Positive := 31;
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subtype Any_Priority is Integer range 0 .. 31;
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subtype Priority is Any_Priority range 0 .. 30;
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subtype Interrupt_Priority is Any_Priority range 31 .. 31;
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Default_Priority : constant Priority := 15;
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private
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type Address is mod Memory_Size;
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Null_Address : constant Address := 0;
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--------------------------------------
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-- System Implementation Parameters --
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--------------------------------------
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-- These parameters provide information about the target that is used
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-- by the compiler. They are in the private part of System, where they
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-- can be accessed using the special circuitry in the Targparm unit
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-- whose source should be consulted for more detailed descriptions
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-- of the individual switch values.
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AAMP : constant Boolean := False;
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Backend_Divide_Checks : constant Boolean := False;
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Backend_Overflow_Checks : constant Boolean := False;
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Command_Line_Args : constant Boolean := True;
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Compiler_System_Version : constant Boolean := False;
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Configurable_Run_Time : constant Boolean := False;
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Denorm : constant Boolean := True;
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Duration_32_Bits : constant Boolean := False;
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Exit_Status_Supported : constant Boolean := True;
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Fractional_Fixed_Ops : constant Boolean := False;
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Frontend_Layout : constant Boolean := False;
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Functions_Return_By_DSP : constant Boolean := False;
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Machine_Overflows : constant Boolean := False;
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Machine_Rounds : constant Boolean := True;
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OpenVMS : constant Boolean := False;
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Preallocated_Stacks : constant Boolean := False;
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Signed_Zeros : constant Boolean := True;
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Stack_Check_Default : constant Boolean := False;
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Stack_Check_Probes : constant Boolean := False;
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Support_64_Bit_Divides : constant Boolean := True;
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Support_Aggregates : constant Boolean := True;
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Support_Composite_Assign : constant Boolean := True;
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Support_Composite_Compare : constant Boolean := True;
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Support_Long_Shifts : constant Boolean := True;
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Suppress_Standard_Library : constant Boolean := False;
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Use_Ada_Main_Program_Name : constant Boolean := False;
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ZCX_By_Default : constant Boolean := False;
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GCC_ZCX_Support : constant Boolean := False;
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Front_End_ZCX_Support : constant Boolean := False;
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-- Obsolete entries, to be removed eventually (bootstrap issues!)
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High_Integrity_Mode : constant Boolean := False;
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Long_Shifts_Inlined : constant Boolean := True;
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end System;
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