1 ------------------------------------------------------------------------------
3 -- GNU ADA RUN-TIME LIBRARY (GNARL) COMPONENTS --
5 -- 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 --
10 -- Copyright (C) 1997-1998, Florida State University --
12 -- GNARL is free software; you can redistribute it and/or modify it under --
13 -- terms of the GNU General Public License as published by the Free Soft- --
14 -- ware Foundation; either version 2, or (at your option) any later ver- --
15 -- sion. GNARL is distributed in the hope that it will be useful, but WITH- --
16 -- OUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY --
17 -- or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License --
18 -- for more details. You should have received a copy of the GNU General --
19 -- Public License distributed with GNARL; see file COPYING. If not, write --
20 -- to the Free Software Foundation, 59 Temple Place - Suite 330, Boston, --
21 -- MA 02111-1307, USA. --
23 -- As a special exception, if other files instantiate generics from this --
24 -- unit, or you link this unit with other files to produce an executable, --
25 -- this unit does not by itself cause the resulting executable to be --
26 -- covered by the GNU General Public License. This exception does not --
27 -- however invalidate any other reasons why the executable file might be --
28 -- covered by the GNU Public License. --
30 -- GNARL was developed by the GNARL team at Florida State University. It is --
31 -- now maintained by Ada Core Technologies Inc. in cooperation with Florida --
32 -- State University (http://www.gnat.com). --
34 ------------------------------------------------------------------------------
36 -- This is an Irix (old pthread library) version of this package.
38 -- PLEASE DO NOT add any dependences on other packages.
39 -- This package is designed to work with or without tasking support.
41 -- Make a careful study of all signals available under the OS,
42 -- to see which need to be reserved, kept always unmasked,
43 -- or kept always unmasked.
44 -- Be on the lookout for special signals that
45 -- may be used by the thread library.
47 with System
.OS_Interface
;
48 -- used for various Constants, Signal and types
50 package body System
.Interrupt_Management
is
52 use System
.OS_Interface
;
54 type Interrupt_List
is array (Interrupt_ID
range <>) of Interrupt_ID
;
56 Exception_Interrupts
: constant Interrupt_List
:=
63 Reserved_Interrupts
: constant Interrupt_List
:=
73 Abort_Signal
: constant := 48;
75 -- Serious MOJO: The SGI pthreads library only supports the
76 -- unnamed signal number 48 for pthread_kill!
79 ----------------------
80 -- Notify_Exception --
81 ----------------------
83 -- This function identifies the Ada exception to be raised using the
84 -- information when the system received a synchronous signal.
85 -- Since this function is machine and OS dependent, different code has to
86 -- be provided for different target.
87 -- On SGI, the signal handling is done is a-init.c, even when tasking is
90 ---------------------------
91 -- Initialize_Interrupts --
92 ---------------------------
94 -- Nothing needs to be done on this platform.
96 procedure Initialize_Interrupts
is
99 end Initialize_Interrupts
;
102 Abort_Task_Interrupt
:= Abort_Signal
;
104 for I
in Reserved_Interrupts
'Range loop
105 Keep_Unmasked
(Reserved_Interrupts
(I
)) := True;
106 Reserve
(Reserved_Interrupts
(I
)) := True;
109 for I
in Exception_Interrupts
'Range loop
110 Keep_Unmasked
(Exception_Interrupts
(I
)) := True;
111 Reserve
(Reserved_Interrupts
(I
)) := True;
114 end System
.Interrupt_Management
;