116 lines
4.8 KiB
Ada
116 lines
4.8 KiB
Ada
------------------------------------------------------------------------------
|
|
-- --
|
|
-- GNU ADA RUN-TIME LIBRARY (GNARL) COMPONENTS --
|
|
-- --
|
|
-- S Y S T E M . I N T E R R U P T _ M A N A G E M E N T --
|
|
-- --
|
|
-- B o d y --
|
|
-- --
|
|
-- $Revision: 1.1 $
|
|
-- --
|
|
-- Copyright (C) 1997-1998, 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). --
|
|
-- --
|
|
------------------------------------------------------------------------------
|
|
|
|
-- This is an Irix (old pthread library) version of this package.
|
|
|
|
-- PLEASE DO NOT add any dependences on other packages.
|
|
-- This package is designed to work with or without tasking support.
|
|
|
|
-- Make a careful study of all signals available under the OS,
|
|
-- to see which need to be reserved, kept always unmasked,
|
|
-- or kept always unmasked.
|
|
-- Be on the lookout for special signals that
|
|
-- may be used by the thread library.
|
|
|
|
with System.OS_Interface;
|
|
-- used for various Constants, Signal and types
|
|
|
|
package body System.Interrupt_Management is
|
|
|
|
use System.OS_Interface;
|
|
|
|
type Interrupt_List is array (Interrupt_ID range <>) of Interrupt_ID;
|
|
|
|
Exception_Interrupts : constant Interrupt_List :=
|
|
(SIGILL,
|
|
SIGABRT,
|
|
SIGFPE,
|
|
SIGSEGV,
|
|
SIGBUS);
|
|
|
|
Reserved_Interrupts : constant Interrupt_List :=
|
|
(0,
|
|
SIGTRAP,
|
|
SIGKILL,
|
|
SIGSYS,
|
|
SIGALRM,
|
|
SIGSTOP,
|
|
SIGPTINTR,
|
|
SIGPTRESCHED);
|
|
|
|
Abort_Signal : constant := 48;
|
|
--
|
|
-- Serious MOJO: The SGI pthreads library only supports the
|
|
-- unnamed signal number 48 for pthread_kill!
|
|
--
|
|
|
|
----------------------
|
|
-- Notify_Exception --
|
|
----------------------
|
|
|
|
-- This function identifies the Ada exception to be raised using the
|
|
-- information when the system received a synchronous signal.
|
|
-- Since this function is machine and OS dependent, different code has to
|
|
-- be provided for different target.
|
|
-- On SGI, the signal handling is done is a-init.c, even when tasking is
|
|
-- involved.
|
|
|
|
---------------------------
|
|
-- Initialize_Interrupts --
|
|
---------------------------
|
|
|
|
-- Nothing needs to be done on this platform.
|
|
|
|
procedure Initialize_Interrupts is
|
|
begin
|
|
null;
|
|
end Initialize_Interrupts;
|
|
|
|
begin
|
|
Abort_Task_Interrupt := Abort_Signal;
|
|
|
|
for I in Reserved_Interrupts'Range loop
|
|
Keep_Unmasked (Reserved_Interrupts (I)) := True;
|
|
Reserve (Reserved_Interrupts (I)) := True;
|
|
end loop;
|
|
|
|
for I in Exception_Interrupts'Range loop
|
|
Keep_Unmasked (Exception_Interrupts (I)) := True;
|
|
Reserve (Reserved_Interrupts (I)) := True;
|
|
end loop;
|
|
|
|
end System.Interrupt_Management;
|