42f1d66133
2013-01-29 Robert Dewar <dewar@adacore.com> * par-ch6.adb (No_Constraint_Maybe_Expr_Func): New procedure. * par-util.adb (No_Constraint): Undo special handling, moved to par-ch6.adb. 2013-01-29 Robert Dewar <dewar@adacore.com> * aspects.ads: Aspect Warnings is implementation defined Add some other missing entries to impl-defined list Mark Warnings as GNAT pragma in main list. * sem_ch8.adb: Process aspects for all cases of renaming declarations. 2013-01-29 Robert Dewar <dewar@adacore.com> * sem_ch6.adb (Analyze_Function_Call): Set In_Assertion flag. * sem_elab.adb (Check_Internal_Call_Continue): Do not issue warnings about possible elaboration error if call is within an assertion. * sinfo.ads, sinfo.adb (In_Assertion): New flag in N_Function_Call node. 2013-01-29 Robert Dewar <dewar@adacore.com> * a-calend-vms.adb, g-eacodu-vms.adb, g-trasym-vms-alpha.adb, * s-auxdec-vms-ia64.adb, s-mastop-vms.adb, s-osprim-vms.adb, s-tasdeb-vms.adb: Replace pragma Interface by pragma Import. 2013-01-29 Robert Dewar <dewar@adacore.com> * opt.ads (Ignore_Style_Checks_Pragmas): New flag. * par-prag.adb (Par, case Style_Checks): Recognize Ignore_Style_Checks_Pragmas. * sem_prag.adb (Analyze_Pragma, case Style_Checks): Recognize Ignore_Style_Checks_Pragmas. * switch-c.adb: Recognize -gnateY switch. * usage.adb: Add documentation for "-gnateY". * vms_data.ads: Add IGNORE_STYLE_CHECKS_PRAGMAS (-gnateY). 2013-01-29 Vincent Celier <celier@adacore.com> * clean.adb (Clean_Executables): Add Sid component when calling Queue.Insert. * make.adb: When inserting in the Queue, add the Source_Id (Sid) when it is known (Start_Compile_If_Possible): When the Source_Id is known (Sid), get the path name of the ALI file (Full_Lib_File) from it, to avoid finding old ALI files in other object directories. * makeutl.ads (Source_Info): New Source_Id component Sid in Format_Gnatmake variant. 2013-01-29 Robert Dewar <dewar@adacore.com> * gnat_ugn.texi: Document -gnateY. 2013-01-29 Doug Rupp <rupp@adacore.com> * s-osinte-vms.ads, s-taprop-vms.adb, system-vms_64.ads, system-vms-ia64.ads: Replace pragma Interface by pragma Import. From-SVN: r195536
577 lines
17 KiB
Ada
577 lines
17 KiB
Ada
------------------------------------------------------------------------------
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-- --
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-- GNAT COMPILER COMPONENTS --
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-- --
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-- S Y S T E M . A U X _ D E C --
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-- --
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-- B o d y --
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-- --
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-- Copyright (C) 1992-2012, 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. --
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-- --
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-- As a special exception under Section 7 of GPL version 3, you are granted --
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-- additional permissions described in the GCC Runtime Library Exception, --
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-- version 3.1, as published by the Free Software Foundation. --
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-- --
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-- You should have received a copy of the GNU General Public License and --
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-- a copy of the GCC Runtime Library Exception along with this program; --
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-- see the files COPYING3 and COPYING.RUNTIME respectively. If not, see --
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-- <http://www.gnu.org/licenses/>. --
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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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-- This is the Itanium/VMS version.
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-- The Add,Clear_Interlocked subprograms are dubiously implmented due to
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-- the lack of a single bit sync_lock_test_and_set builtin.
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-- The "Retry" parameter is ignored due to the lack of retry builtins making
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-- the subprograms identical to the non-retry versions.
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pragma Style_Checks (All_Checks);
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-- Turn off alpha ordering check on subprograms, this unit is laid
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-- out to correspond to the declarations in the DEC 83 System unit.
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with Interfaces;
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package body System.Aux_DEC is
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use type Interfaces.Unsigned_8;
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------------------------
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-- Fetch_From_Address --
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------------------------
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function Fetch_From_Address (A : Address) return Target is
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type T_Ptr is access all Target;
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function To_T_Ptr is new Ada.Unchecked_Conversion (Address, T_Ptr);
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Ptr : constant T_Ptr := To_T_Ptr (A);
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begin
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return Ptr.all;
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end Fetch_From_Address;
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-----------------------
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-- Assign_To_Address --
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-----------------------
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procedure Assign_To_Address (A : Address; T : Target) is
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type T_Ptr is access all Target;
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function To_T_Ptr is new Ada.Unchecked_Conversion (Address, T_Ptr);
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Ptr : constant T_Ptr := To_T_Ptr (A);
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begin
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Ptr.all := T;
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end Assign_To_Address;
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-----------------------
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-- Clear_Interlocked --
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-----------------------
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procedure Clear_Interlocked
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(Bit : in out Boolean;
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Old_Value : out Boolean)
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is
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Clr_Bit : Boolean := Bit;
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Old_Uns : Interfaces.Unsigned_8;
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function Sync_Lock_Test_And_Set
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(Ptr : Address;
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Value : Interfaces.Unsigned_8) return Interfaces.Unsigned_8;
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pragma Import (Intrinsic, Sync_Lock_Test_And_Set,
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"__sync_lock_test_and_set_1");
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begin
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Old_Uns := Sync_Lock_Test_And_Set (Clr_Bit'Address, 0);
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Bit := Clr_Bit;
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Old_Value := Old_Uns /= 0;
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end Clear_Interlocked;
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procedure Clear_Interlocked
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(Bit : in out Boolean;
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Old_Value : out Boolean;
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Retry_Count : Natural;
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Success_Flag : out Boolean)
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is
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pragma Unreferenced (Retry_Count);
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Clr_Bit : Boolean := Bit;
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Old_Uns : Interfaces.Unsigned_8;
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function Sync_Lock_Test_And_Set
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(Ptr : Address;
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Value : Interfaces.Unsigned_8) return Interfaces.Unsigned_8;
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pragma Import (Intrinsic, Sync_Lock_Test_And_Set,
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"__sync_lock_test_and_set_1");
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begin
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Old_Uns := Sync_Lock_Test_And_Set (Clr_Bit'Address, 0);
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Bit := Clr_Bit;
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Old_Value := Old_Uns /= 0;
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Success_Flag := True;
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end Clear_Interlocked;
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---------------------
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-- Set_Interlocked --
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---------------------
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procedure Set_Interlocked
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(Bit : in out Boolean;
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Old_Value : out Boolean)
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is
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Set_Bit : Boolean := Bit;
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Old_Uns : Interfaces.Unsigned_8;
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function Sync_Lock_Test_And_Set
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(Ptr : Address;
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Value : Interfaces.Unsigned_8) return Interfaces.Unsigned_8;
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pragma Import (Intrinsic, Sync_Lock_Test_And_Set,
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"__sync_lock_test_and_set_1");
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begin
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Old_Uns := Sync_Lock_Test_And_Set (Set_Bit'Address, 1);
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Bit := Set_Bit;
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Old_Value := Old_Uns /= 0;
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end Set_Interlocked;
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procedure Set_Interlocked
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(Bit : in out Boolean;
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Old_Value : out Boolean;
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Retry_Count : Natural;
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Success_Flag : out Boolean)
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is
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pragma Unreferenced (Retry_Count);
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Set_Bit : Boolean := Bit;
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Old_Uns : Interfaces.Unsigned_8;
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function Sync_Lock_Test_And_Set
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(Ptr : Address;
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Value : Interfaces.Unsigned_8) return Interfaces.Unsigned_8;
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pragma Import (Intrinsic, Sync_Lock_Test_And_Set,
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"__sync_lock_test_and_set_1");
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begin
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Old_Uns := Sync_Lock_Test_And_Set (Set_Bit'Address, 1);
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Bit := Set_Bit;
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Old_Value := Old_Uns /= 0;
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Success_Flag := True;
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end Set_Interlocked;
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---------------------
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-- Add_Interlocked --
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---------------------
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procedure Add_Interlocked
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(Addend : Short_Integer;
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Augend : in out Aligned_Word;
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Sign : out Integer)
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is
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Overflowed : Boolean := False;
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Former : Aligned_Word;
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function Sync_Fetch_And_Add
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(Ptr : Address;
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Value : Short_Integer) return Short_Integer;
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pragma Import (Intrinsic, Sync_Fetch_And_Add, "__sync_fetch_and_add_2");
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begin
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Former.Value := Sync_Fetch_And_Add (Augend.Value'Address, Addend);
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if Augend.Value < 0 then
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Sign := -1;
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elsif Augend.Value > 0 then
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Sign := 1;
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else
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Sign := 0;
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end if;
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if Former.Value > 0 and then Augend.Value <= 0 then
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Overflowed := True;
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end if;
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if Overflowed then
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raise Constraint_Error;
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end if;
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end Add_Interlocked;
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----------------
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-- Add_Atomic --
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----------------
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procedure Add_Atomic
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(To : in out Aligned_Integer;
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Amount : Integer)
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is
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procedure Sync_Add_And_Fetch
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(Ptr : Address;
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Value : Integer);
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pragma Import (Intrinsic, Sync_Add_And_Fetch, "__sync_add_and_fetch_4");
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begin
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Sync_Add_And_Fetch (To.Value'Address, Amount);
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end Add_Atomic;
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procedure Add_Atomic
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(To : in out Aligned_Integer;
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Amount : Integer;
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Retry_Count : Natural;
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Old_Value : out Integer;
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Success_Flag : out Boolean)
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is
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pragma Unreferenced (Retry_Count);
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function Sync_Fetch_And_Add
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(Ptr : Address;
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Value : Integer) return Integer;
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pragma Import (Intrinsic, Sync_Fetch_And_Add, "__sync_fetch_and_add_4");
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begin
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Old_Value := Sync_Fetch_And_Add (To.Value'Address, Amount);
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Success_Flag := True;
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end Add_Atomic;
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procedure Add_Atomic
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(To : in out Aligned_Long_Integer;
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Amount : Long_Integer)
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is
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procedure Sync_Add_And_Fetch
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(Ptr : Address;
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Value : Long_Integer);
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pragma Import (Intrinsic, Sync_Add_And_Fetch, "__sync_add_and_fetch_8");
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begin
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Sync_Add_And_Fetch (To.Value'Address, Amount);
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end Add_Atomic;
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procedure Add_Atomic
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(To : in out Aligned_Long_Integer;
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Amount : Long_Integer;
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Retry_Count : Natural;
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Old_Value : out Long_Integer;
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Success_Flag : out Boolean)
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is
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pragma Unreferenced (Retry_Count);
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function Sync_Fetch_And_Add
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(Ptr : Address;
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Value : Long_Integer) return Long_Integer;
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pragma Import (Intrinsic, Sync_Fetch_And_Add, "__sync_fetch_and_add_8");
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-- Why do we keep importing this over and over again???
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begin
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Old_Value := Sync_Fetch_And_Add (To.Value'Address, Amount);
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Success_Flag := True;
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end Add_Atomic;
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----------------
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-- And_Atomic --
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----------------
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procedure And_Atomic
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(To : in out Aligned_Integer;
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From : Integer)
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is
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procedure Sync_And_And_Fetch
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(Ptr : Address;
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Value : Integer);
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pragma Import (Intrinsic, Sync_And_And_Fetch, "__sync_and_and_fetch_4");
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begin
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Sync_And_And_Fetch (To.Value'Address, From);
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end And_Atomic;
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procedure And_Atomic
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(To : in out Aligned_Integer;
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From : Integer;
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Retry_Count : Natural;
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Old_Value : out Integer;
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Success_Flag : out Boolean)
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is
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pragma Unreferenced (Retry_Count);
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function Sync_Fetch_And_And
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(Ptr : Address;
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Value : Integer) return Integer;
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pragma Import (Intrinsic, Sync_Fetch_And_And, "__sync_fetch_and_and_4");
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begin
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Old_Value := Sync_Fetch_And_And (To.Value'Address, From);
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Success_Flag := True;
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end And_Atomic;
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procedure And_Atomic
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(To : in out Aligned_Long_Integer;
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From : Long_Integer)
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is
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procedure Sync_And_And_Fetch
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(Ptr : Address;
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Value : Long_Integer);
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pragma Import (Intrinsic, Sync_And_And_Fetch, "__sync_and_and_fetch_8");
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begin
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Sync_And_And_Fetch (To.Value'Address, From);
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end And_Atomic;
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procedure And_Atomic
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(To : in out Aligned_Long_Integer;
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From : Long_Integer;
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Retry_Count : Natural;
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Old_Value : out Long_Integer;
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Success_Flag : out Boolean)
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is
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pragma Unreferenced (Retry_Count);
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function Sync_Fetch_And_And
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(Ptr : Address;
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Value : Long_Integer) return Long_Integer;
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pragma Import (Intrinsic, Sync_Fetch_And_And, "__sync_fetch_and_and_8");
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begin
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Old_Value := Sync_Fetch_And_And (To.Value'Address, From);
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Success_Flag := True;
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end And_Atomic;
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---------------
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-- Or_Atomic --
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---------------
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procedure Or_Atomic
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(To : in out Aligned_Integer;
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From : Integer)
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is
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procedure Sync_Or_And_Fetch
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(Ptr : Address;
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Value : Integer);
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pragma Import (Intrinsic, Sync_Or_And_Fetch, "__sync_or_and_fetch_4");
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begin
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Sync_Or_And_Fetch (To.Value'Address, From);
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end Or_Atomic;
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procedure Or_Atomic
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(To : in out Aligned_Integer;
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From : Integer;
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Retry_Count : Natural;
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Old_Value : out Integer;
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Success_Flag : out Boolean)
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is
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pragma Unreferenced (Retry_Count);
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function Sync_Fetch_And_Or
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(Ptr : Address;
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Value : Integer) return Integer;
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pragma Import (Intrinsic, Sync_Fetch_And_Or, "__sync_fetch_and_or_4");
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begin
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Old_Value := Sync_Fetch_And_Or (To.Value'Address, From);
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Success_Flag := True;
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end Or_Atomic;
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procedure Or_Atomic
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(To : in out Aligned_Long_Integer;
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From : Long_Integer)
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is
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procedure Sync_Or_And_Fetch
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(Ptr : Address;
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Value : Long_Integer);
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pragma Import (Intrinsic, Sync_Or_And_Fetch, "__sync_or_and_fetch_8");
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begin
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Sync_Or_And_Fetch (To.Value'Address, From);
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end Or_Atomic;
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procedure Or_Atomic
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(To : in out Aligned_Long_Integer;
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From : Long_Integer;
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Retry_Count : Natural;
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Old_Value : out Long_Integer;
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Success_Flag : out Boolean)
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is
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pragma Unreferenced (Retry_Count);
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function Sync_Fetch_And_Or
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(Ptr : Address;
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Value : Long_Integer) return Long_Integer;
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pragma Import (Intrinsic, Sync_Fetch_And_Or, "__sync_fetch_and_or_8");
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begin
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Old_Value := Sync_Fetch_And_Or (To.Value'Address, From);
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Success_Flag := True;
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end Or_Atomic;
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------------
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-- Insqhi --
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------------
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procedure Insqhi
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(Item : Address;
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Header : Address;
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Status : out Insq_Status) is
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procedure SYS_PAL_INSQHIL
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(STATUS : out Integer; Header : Address; ITEM : Address);
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pragma Import (External, SYS_PAL_INSQHIL);
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pragma Import_Valued_Procedure (SYS_PAL_INSQHIL, "SYS$PAL_INSQHIL",
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(Integer, Address, Address),
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(Value, Value, Value));
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Istat : Integer;
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begin
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SYS_PAL_INSQHIL (Istat, Header, Item);
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if Istat = 0 then
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Status := OK_Not_First;
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elsif Istat = 1 then
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Status := OK_First;
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else
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-- This status is never returned on IVMS
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Status := Fail_No_Lock;
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end if;
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end Insqhi;
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------------
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-- Remqhi --
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------------
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procedure Remqhi
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(Header : Address;
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Item : out Address;
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Status : out Remq_Status)
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is
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-- The removed item is returned in the second function return register,
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-- R9 on IVMS. The VMS ABI calls for "small" records to be returned in
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-- these registers, so inventing this odd looking record type makes that
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-- all work.
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type Remq is record
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Status : Long_Integer;
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Item : Address;
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end record;
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procedure SYS_PAL_REMQHIL
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(Remret : out Remq; Header : Address);
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pragma Import (External, SYS_PAL_REMQHIL);
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pragma Import_Valued_Procedure
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(SYS_PAL_REMQHIL, "SYS$PAL_REMQHIL",
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(Remq, Address),
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(Value, Value));
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-- Following variables need documentation???
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Rstat : Long_Integer;
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Remret : Remq;
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begin
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SYS_PAL_REMQHIL (Remret, Header);
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Rstat := Remret.Status;
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Item := Remret.Item;
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if Rstat = 0 then
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Status := Fail_Was_Empty;
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elsif Rstat = 1 then
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Status := OK_Not_Empty;
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elsif Rstat = 2 then
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Status := OK_Empty;
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else
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-- This status is never returned on IVMS
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Status := Fail_No_Lock;
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end if;
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end Remqhi;
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------------
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-- Insqti --
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------------
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procedure Insqti
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(Item : Address;
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Header : Address;
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Status : out Insq_Status) is
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procedure SYS_PAL_INSQTIL
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(STATUS : out Integer; Header : Address; ITEM : Address);
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pragma Import (External, SYS_PAL_INSQTIL);
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pragma Import_Valued_Procedure (SYS_PAL_INSQTIL, "SYS$PAL_INSQTIL",
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(Integer, Address, Address),
|
|
(Value, Value, Value));
|
|
|
|
Istat : Integer;
|
|
|
|
begin
|
|
SYS_PAL_INSQTIL (Istat, Header, Item);
|
|
|
|
if Istat = 0 then
|
|
Status := OK_Not_First;
|
|
|
|
elsif Istat = 1 then
|
|
Status := OK_First;
|
|
|
|
else
|
|
-- This status is never returned on IVMS
|
|
|
|
Status := Fail_No_Lock;
|
|
end if;
|
|
end Insqti;
|
|
|
|
------------
|
|
-- Remqti --
|
|
------------
|
|
|
|
procedure Remqti
|
|
(Header : Address;
|
|
Item : out Address;
|
|
Status : out Remq_Status)
|
|
is
|
|
-- The removed item is returned in the second function return register,
|
|
-- R9 on IVMS. The VMS ABI calls for "small" records to be returned in
|
|
-- these registers, so inventing (where is rest of this comment???)
|
|
|
|
type Remq is record
|
|
Status : Long_Integer;
|
|
Item : Address;
|
|
end record;
|
|
|
|
procedure SYS_PAL_REMQTIL
|
|
(Remret : out Remq; Header : Address);
|
|
pragma Import (External, SYS_PAL_REMQTIL);
|
|
pragma Import_Valued_Procedure (SYS_PAL_REMQTIL, "SYS$PAL_REMQTIL",
|
|
(Remq, Address),
|
|
(Value, Value));
|
|
|
|
Rstat : Long_Integer;
|
|
Remret : Remq;
|
|
|
|
begin
|
|
SYS_PAL_REMQTIL (Remret, Header);
|
|
|
|
Rstat := Remret.Status;
|
|
Item := Remret.Item;
|
|
|
|
-- Wouldn't case be nicer here, and in previous similar cases ???
|
|
|
|
if Rstat = 0 then
|
|
Status := Fail_Was_Empty;
|
|
|
|
elsif Rstat = 1 then
|
|
Status := OK_Not_Empty;
|
|
|
|
elsif Rstat = 2 then
|
|
Status := OK_Empty;
|
|
else
|
|
-- This status is never returned on IVMS
|
|
|
|
Status := Fail_No_Lock;
|
|
end if;
|
|
end Remqti;
|
|
|
|
end System.Aux_DEC;
|