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|
------------------------------------------------------------------------------
-- --
-- GNU ADA RUN-TIME LIBRARY (GNARL) COMPONENTS --
-- --
-- A D A . I N T E R R U P T S --
-- --
-- B o d y --
-- --
-- $Revision: 1.12 $ --
-- --
-- Copyright (C) 1991-2001 Florida State University --
-- --
-- GNARL 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. GNARL 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 GNARL; 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. --
-- --
-- GNARL was developed by the GNARL team at Florida State University. It is --
-- now maintained by Ada Core Technologies Inc. in cooperation with Florida --
-- State University (http://www.gnat.com). --
-- --
------------------------------------------------------------------------------
with System.Interrupts;
-- used for Interrupt_ID
-- Parameterless_Handler
-- Is_Reserved
-- Is_Handler_Attached
-- Current_Handler
-- Attach_Handler
-- Exchange_Handler
-- Detach_Handler
-- Reference
with Unchecked_Conversion;
package body Ada.Interrupts is
package SI renames System.Interrupts;
function To_System is new Unchecked_Conversion
(Parameterless_Handler, SI.Parameterless_Handler);
function To_Ada is new Unchecked_Conversion
(SI.Parameterless_Handler, Parameterless_Handler);
--------------------
-- Attach_Handler --
--------------------
procedure Attach_Handler
(New_Handler : Parameterless_Handler;
Interrupt : Interrupt_ID)
is
begin
SI.Attach_Handler
(To_System (New_Handler), SI.Interrupt_ID (Interrupt), False);
end Attach_Handler;
---------------------
-- Current_Handler --
---------------------
function Current_Handler
(Interrupt : Interrupt_ID)
return Parameterless_Handler
is
begin
return To_Ada (SI.Current_Handler (SI.Interrupt_ID (Interrupt)));
end Current_Handler;
--------------------
-- Detach_Handler --
--------------------
procedure Detach_Handler (Interrupt : in Interrupt_ID) is
begin
SI.Detach_Handler (SI.Interrupt_ID (Interrupt), False);
end Detach_Handler;
----------------------
-- Exchange_Handler --
----------------------
procedure Exchange_Handler
(Old_Handler : out Parameterless_Handler;
New_Handler : Parameterless_Handler;
Interrupt : Interrupt_ID)
is
H : SI.Parameterless_Handler;
begin
SI.Exchange_Handler
(H, To_System (New_Handler),
SI.Interrupt_ID (Interrupt), False);
Old_Handler := To_Ada (H);
end Exchange_Handler;
-----------------
-- Is_Attached --
-----------------
function Is_Attached (Interrupt : Interrupt_ID) return Boolean is
begin
return SI.Is_Handler_Attached (SI.Interrupt_ID (Interrupt));
end Is_Attached;
-----------------
-- Is_Reserved --
-----------------
function Is_Reserved (Interrupt : Interrupt_ID) return Boolean is
begin
return SI.Is_Reserved (SI.Interrupt_ID (Interrupt));
end Is_Reserved;
---------------
-- Reference --
---------------
function Reference (Interrupt : Interrupt_ID) return System.Address is
begin
return SI.Reference (SI.Interrupt_ID (Interrupt));
end Reference;
end Ada.Interrupts;
|
