81a5b587ef
2003-11-26 Thomas Quinot <quinot@act-europe.fr>
* g-socket.ads, g-socket.adb:
Clarify documentation of function Stream. Introduce a Free procedure
to release the returned Stream once it becomes unused.
* 5asystem.ads: For Alpha Tru64, enable ZCX by default.
2003-11-26 Arnaud Charlet <charlet@act-europe.fr>
(Cond_Timed_Wait): Introduce new constant Time_Out_Max,
since NT 4 cannot handle timeout values that are too large,
e.g. DWORD'Last - 1.
2003-11-26 Ed Schonberg <schonberg@gnat.com>
* exp_ch4.adb:
(Expand_N_Slice): Recognize all cases of slices that appear as actuals
in procedure calls and whose expansion must be deferred.
* exp_ch6.adb (Add_Call_By_Copy_Node): Remove previous fix. Proper fix
is in exp_ch4.
* sem_ch3.adb:
(Build_Derived_Array_Type): Create operator for unconstrained type
if ancestor is unconstrained.
2003-11-26 Vincent Celier <celier@gnat.com>
* make.adb (Project_Object_Directory): New global variable
(Change_To_Object_Directory): New procedure
(Collect_Arguments_And_Compile): Call Change_To_Object_Directory instead
of Change_Dir directly. Do not change working directory to object
directory of main project after each compilation.
(Gnatmake): Use Change_To_Object_Directory instead of Change_Dir
directly.
Change to object directory of main project before binding step.
(Initialize): Initialize Project_Object_Directory to No_Project
* mlib-prj.adb:
(Build_Library): Take into account Builder'Default_Switches ("Ada") when
binding a Stand-Alone Library.
* output.adb: Update Copyright notice
(Write_Char): Output buffer when full
2003-11-26 Robert Dewar <dewar@gnat.com>
* sem_ch13.adb: (Check_Size): Reset size if size is too small
* sem_ch13.ads:
(Check_Size): Fix documentation to include bit-packed array case
* sem_res.adb: Implement restriction No_Direct_Boolean_Operators
* s-rident.ads: Put No_Direct_Boolean_Operators in proper order
* s-rident.ads: Add new restriction No_Direct_Boolean_Operators
From-SVN: r73991
222 lines
9.8 KiB
Ada
222 lines
9.8 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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-- (DEC Unix Version) --
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-- --
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-- Copyright (C) 1992-2003 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, 59 Temple Place - Suite 330, Boston, --
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-- MA 02111-1307, 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 (System);
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-- Note that we take advantage of the implementation permission to
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-- make this unit Pure instead of Preelaborable, see RM 13.7(36)
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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 := 1.0 / 1024.0;
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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 := 64;
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Memory_Size : constant := 2 ** 64;
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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 := 60;
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Max_Interrupt_Priority : constant Positive := 63;
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subtype Any_Priority is Integer range 0 .. 63;
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subtype Priority is Any_Priority range 0 .. 60;
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subtype Interrupt_Priority is Any_Priority range 61 .. 63;
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Default_Priority : constant Priority := 30;
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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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Configurable_Run_Time : constant Boolean := False;
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Denorm : constant Boolean := False;
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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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Signed_Zeros : constant Boolean := True;
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Stack_Check_Default : constant Boolean := True;
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Stack_Check_Probes : constant Boolean := True;
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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 := True;
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GCC_ZCX_Support : constant Boolean := True;
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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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-- Note: Denorm is False because denormals are only handled properly
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-- if the -mieee switch is set, and we do not require this usage.
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---------------------------
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-- Underlying Priorities --
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---------------------------
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-- Important note: this section of the file must come AFTER the
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-- definition of the system implementation parameters to ensure
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-- that the value of these parameters is available for analysis
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-- of the declarations here (using Rtsfind at compile time).
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-- The underlying priorities table provides a generalized mechanism
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-- for mapping from Ada priorities to system priorities. In some
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-- cases a 1-1 mapping is not the convenient or optimal choice.
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-- For Dec Unix 4.0d, we use a default 1-to-1 mapping that provides
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-- the full range of 64 priorities available from the operating system.
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-- On DU prior to 4.0d, less than 64 priorities are available so there
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-- are two possibilities:
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-- Limit your range of priorities to the range provided by the
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-- OS (e.g 16 .. 32 on 4.0b)
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-- Replace the standard table as described below
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-- To replace the default values of the Underlying_Priorities mapping,
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-- copy this source file into your build directory, edit the file to
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-- reflect your desired behavior, and recompile with the command:
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-- $ gcc -c -O3 -gnatpgn system.ads
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-- then recompile the run-time parts that depend on this package:
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-- $ gnatmake -a -gnatn -O3 <your application>
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-- then force rebuilding your application if you need different options:
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-- $ gnatmake -f <your options> <your application>
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type Priorities_Mapping is array (Any_Priority) of Integer;
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pragma Suppress_Initialization (Priorities_Mapping);
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-- Suppress initialization in case gnat.adc specifies Normalize_Scalars
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Underlying_Priorities : constant Priorities_Mapping :=
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(Priority'First => 0,
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1 => 1, 2 => 2, 3 => 3, 4 => 4, 5 => 5,
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6 => 6, 7 => 7, 8 => 8, 9 => 9, 10 => 10,
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11 => 11, 12 => 12, 13 => 13, 14 => 14, 15 => 15,
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16 => 16, 17 => 17, 18 => 18, 19 => 19, 20 => 20,
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21 => 21, 22 => 22, 23 => 23, 24 => 24, 25 => 25,
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26 => 26, 27 => 27, 28 => 28, 29 => 29,
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Default_Priority => 30,
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31 => 31, 32 => 32, 33 => 33, 34 => 34, 35 => 35,
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36 => 36, 37 => 37, 38 => 38, 39 => 39, 40 => 40,
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41 => 41, 42 => 42, 43 => 43, 44 => 44, 45 => 45,
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46 => 46, 47 => 47, 48 => 48, 49 => 49, 50 => 50,
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51 => 51, 52 => 52, 53 => 53, 54 => 54, 55 => 55,
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56 => 56, 57 => 57, 58 => 58, 59 => 59,
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Priority'Last => 60,
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61 => 61, 62 => 62,
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Interrupt_Priority'Last => 63);
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end System;
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