------------------------------------------------------------------------------ -- -- -- GNAT RUN-TIME COMPONENTS -- -- -- -- S Y S T E M -- -- -- -- S p e c -- -- (ARM Cortex M4 Version) -- -- -- -- Copyright (C) 1992-2014, Free Software Foundation, Inc. -- -- -- -- This specification is derived from the Ada Reference Manual for use with -- -- GNAT. The copyright notice above, and the license provisions that follow -- -- apply solely to the contents of the part following the private keyword. -- -- -- -- 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. -- -- -- -- -- -- -- -- -- -- -- -- You should have received a copy of the GNU General Public License and -- -- a copy of the GCC Runtime Library Exception along with this program; -- -- see the files COPYING3 and COPYING.RUNTIME respectively. If not, see -- -- . -- -- -- -- GNAT was originally developed by the GNAT team at New York University. -- -- Extensive contributions were provided by Ada Core Technologies Inc. -- -- -- ------------------------------------------------------------------------------ pragma Restrictions (No_Exception_Propagation); -- Only local exception handling is supported in this profile pragma Restrictions (No_Exception_Registration); -- Disable exception name registration. This capability is not used because -- it is only required by exception stream attributes which are not supported -- in this run time. pragma Restrictions (No_Implicit_Dynamic_Code); -- Pointers to nested subprograms are not allowed in this run time, in order -- to prevent the compiler from building "trampolines". pragma Restrictions (No_Finalization); -- Controlled types are not supported in this run time pragma Profile (Ravenscar); -- This is a Ravenscar run time pragma Discard_Names; -- Disable explicitly the generation of names associated with entities in -- order to reduce the amount of storage used. These names are not used anyway -- (attributes such as 'Image and 'Value are not supported in this run time). package System is pragma Pure; -- Note that we take advantage of the implementation permission to make -- this unit Pure instead of Preelaborable; see RM 13.7.1(15). In Ada -- 2005, this is Pure in any case (AI-362). pragma No_Elaboration_Code_All; -- Allow the use of that restriction in units that WITH this unit type Name is (SYSTEM_NAME_GNAT); System_Name : constant Name := SYSTEM_NAME_GNAT; -- System-Dependent Named Numbers Min_Int : constant := Long_Long_Integer'First; Max_Int : constant := Long_Long_Integer'Last; Max_Binary_Modulus : constant := 2 ** Long_Long_Integer'Size; Max_Nonbinary_Modulus : constant := 2 ** Integer'Size - 1; Max_Base_Digits : constant := Long_Long_Float'Digits; Max_Digits : constant := Long_Long_Float'Digits; Max_Mantissa : constant := 63; Fine_Delta : constant := 2.0 ** (-Max_Mantissa); Tick : constant := 0.000_001; -- Storage-related Declarations type Address is private; pragma Preelaborable_Initialization (Address); Null_Address : constant Address; Storage_Unit : constant := 8; Word_Size : constant := 32; Memory_Size : constant := 2 ** 32; -- Address comparison function "<" (Left, Right : Address) return Boolean; function "<=" (Left, Right : Address) return Boolean; function ">" (Left, Right : Address) return Boolean; function ">=" (Left, Right : Address) return Boolean; function "=" (Left, Right : Address) return Boolean; pragma Import (Intrinsic, "<"); pragma Import (Intrinsic, "<="); pragma Import (Intrinsic, ">"); pragma Import (Intrinsic, ">="); pragma Import (Intrinsic, "="); -- Other System-Dependent Declarations type Bit_Order is (High_Order_First, Low_Order_First); Default_Bit_Order : constant Bit_Order := Bit_Order'Val (Standard'Default_Bit_Order); pragma Warnings (Off, Default_Bit_Order); -- kill constant condition warning -- Priority-related Declarations (RM D.1) -- 241 .. 255 corresponds to priority level 15 .. 1 Max_Interrupt_Priority : constant Positive := 255; Max_Priority : constant Positive := 240; subtype Any_Priority is Integer range 0 .. 255; subtype Priority is Any_Priority range 0 .. 240; subtype Interrupt_Priority is Any_Priority range 241 .. 255; Default_Priority : constant Priority := 120; private type Address is mod Memory_Size; Null_Address : constant Address := 0; -------------------------------------- -- System Implementation Parameters -- -------------------------------------- -- These parameters provide information about the target that is used by -- the compiler. They are in the private part of System, where they can be -- accessed using the special circuitry in the Targparm unit whose source -- should be consulted for more detailed descriptions of the individual -- switch values. Atomic_Sync_Default : constant Boolean := False; Backend_Divide_Checks : constant Boolean := False; Backend_Overflow_Checks : constant Boolean := True; Command_Line_Args : constant Boolean := False; Configurable_Run_Time : constant Boolean := True; Denorm : constant Boolean := False; Duration_32_Bits : constant Boolean := False; Exit_Status_Supported : constant Boolean := False; Fractional_Fixed_Ops : constant Boolean := False; Frontend_Layout : constant Boolean := False; Machine_Overflows : constant Boolean := False; Machine_Rounds : constant Boolean := True; Preallocated_Stacks : constant Boolean := True; Signed_Zeros : constant Boolean := True; Stack_Check_Default : constant Boolean := False; Stack_Check_Probes : constant Boolean := False; Stack_Check_Limits : constant Boolean := False; Support_Aggregates : constant Boolean := True; Support_Composite_Assign : constant Boolean := True; Support_Composite_Compare : constant Boolean := True; Support_Long_Shifts : constant Boolean := True; Always_Compatible_Rep : constant Boolean := True; Suppress_Standard_Library : constant Boolean := True; Use_Ada_Main_Program_Name : constant Boolean := False; ZCX_By_Default : constant Boolean := False; end System;