6cbcc54138
* xeinfo.adb: Don't look for revision numbers. * xnmake.adb: Likewise. * xsinfo.adb: Likewise. * xsnames.adb: Likewise. * xtreeprs.adb: Likewise. From-SVN: r50768
198 lines
8.8 KiB
Ada
198 lines
8.8 KiB
Ada
------------------------------------------------------------------------------
|
|
-- --
|
|
-- GNAT RUN-TIME COMPONENTS --
|
|
-- --
|
|
-- S Y S T E M --
|
|
-- --
|
|
-- S p e c --
|
|
-- (NT Version) --
|
|
-- --
|
|
-- --
|
|
-- Copyright (C) 1992-2002 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 2, 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 COPYING. If not, write --
|
|
-- to the Free Software Foundation, 59 Temple Place - Suite 330, Boston, --
|
|
-- MA 02111-1307, USA. --
|
|
-- --
|
|
-- As a special exception, if other files instantiate generics from this --
|
|
-- unit, or you link this unit with other files to produce an executable, --
|
|
-- this unit does not by itself cause the resulting executable to be --
|
|
-- covered by the GNU General Public License. This exception does not --
|
|
-- however invalidate any other reasons why the executable file might be --
|
|
-- covered by the GNU Public License. --
|
|
-- --
|
|
-- GNAT was originally developed by the GNAT team at New York University. --
|
|
-- It is now maintained by Ada Core Technologies Inc (http://www.gnat.com). --
|
|
-- --
|
|
------------------------------------------------------------------------------
|
|
|
|
package System is
|
|
pragma Pure (System);
|
|
-- Note that we take advantage of the implementation permission to
|
|
-- make this unit Pure instead of Preelaborable, see RM 13.7(36)
|
|
|
|
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 := Integer'Last;
|
|
|
|
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 := 1.0;
|
|
|
|
-- Storage-related Declarations
|
|
|
|
type Address is private;
|
|
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 := Low_Order_First;
|
|
|
|
-- Priority-related Declarations (RM D.1)
|
|
|
|
Max_Priority : constant Positive := 30;
|
|
Max_Interrupt_Priority : constant Positive := 31;
|
|
|
|
subtype Any_Priority is Integer range 0 .. 31;
|
|
subtype Priority is Any_Priority range 0 .. 30;
|
|
subtype Interrupt_Priority is Any_Priority range 31 .. 31;
|
|
|
|
Default_Priority : constant Priority := 15;
|
|
|
|
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.
|
|
|
|
AAMP : constant Boolean := False;
|
|
Backend_Divide_Checks : constant Boolean := False;
|
|
Backend_Overflow_Checks : constant Boolean := False;
|
|
Command_Line_Args : constant Boolean := True;
|
|
Denorm : constant Boolean := True;
|
|
Fractional_Fixed_Ops : constant Boolean := False;
|
|
Frontend_Layout : constant Boolean := False;
|
|
Functions_Return_By_DSP : constant Boolean := False;
|
|
Long_Shifts_Inlined : constant Boolean := True;
|
|
High_Integrity_Mode : constant Boolean := False;
|
|
Machine_Overflows : constant Boolean := False;
|
|
Machine_Rounds : constant Boolean := True;
|
|
OpenVMS : constant Boolean := False;
|
|
Signed_Zeros : constant Boolean := True;
|
|
Stack_Check_Default : constant Boolean := False;
|
|
Stack_Check_Probes : constant Boolean := False;
|
|
Use_Ada_Main_Program_Name : constant Boolean := False;
|
|
ZCX_By_Default : constant Boolean := False;
|
|
GCC_ZCX_Support : constant Boolean := False;
|
|
Front_End_ZCX_Support : constant Boolean := True;
|
|
|
|
---------------------------
|
|
-- Underlying Priorities --
|
|
---------------------------
|
|
|
|
-- Important note: this section of the file must come AFTER the
|
|
-- definition of the system implementation parameters to ensure
|
|
-- that the value of these parameters is available for analysis
|
|
-- of the declarations here (using Rtsfind at compile time).
|
|
|
|
-- The underlying priorities table provides a generalized mechanism
|
|
-- for mapping from Ada priorities to system priorities. In some
|
|
-- cases a 1-1 mapping is not the convenient or optimal choice.
|
|
|
|
type Priorities_Mapping is array (Any_Priority) of Integer;
|
|
pragma Suppress_Initialization (Priorities_Mapping);
|
|
-- Suppress initialization in case gnat.adc specifies Normalize_Scalars
|
|
|
|
-- On NT, the default mapping preserves the standard 31 priorities
|
|
-- of the Ada model, but maps them using compression onto the 7
|
|
-- priority levels available in NT.
|
|
|
|
-- To replace the default values of the Underlying_Priorities mapping,
|
|
-- copy this source file into your build directory, edit the file to
|
|
-- reflect your desired behavior, and recompile with the command:
|
|
|
|
-- $ gcc -c -O3 -gnatpgn system.ads
|
|
|
|
-- then recompile the run-time parts that depend on this package:
|
|
|
|
-- $ gnatmake -a -gnatn -O3 <your application>
|
|
|
|
-- then force rebuilding your application if you need different options:
|
|
|
|
-- $ gnatmake -f <your options> <your application>
|
|
|
|
Underlying_Priorities : constant Priorities_Mapping :=
|
|
|
|
(Priority'First .. 1 => -15,
|
|
|
|
2 .. Default_Priority - 2 => -2,
|
|
|
|
Default_Priority - 1 => -1,
|
|
|
|
Default_Priority => 0,
|
|
|
|
Default_Priority + 1 .. 19 => 1,
|
|
|
|
20 .. Priority'Last => 2,
|
|
|
|
Interrupt_Priority => 15);
|
|
|
|
pragma Linker_Options ("-Wl,--stack=0x2000000");
|
|
-- This is used to change the default stack (32 MB) size for non tasking
|
|
-- programs. We change this value for GNAT on Windows here because the
|
|
-- binutils on this platform have switched to a too low value for Ada
|
|
-- programs. Note that we also set the stack size for tasking programs in
|
|
-- System.Task_Primitives.Operations.
|
|
|
|
end System;
|