aboutsummaryrefslogtreecommitdiffstats
path: root/gcc-4.8.3/gcc/ada/s-intman-vxworks.ads
diff options
context:
space:
mode:
Diffstat (limited to 'gcc-4.8.3/gcc/ada/s-intman-vxworks.ads')
-rw-r--r--gcc-4.8.3/gcc/ada/s-intman-vxworks.ads105
1 files changed, 105 insertions, 0 deletions
diff --git a/gcc-4.8.3/gcc/ada/s-intman-vxworks.ads b/gcc-4.8.3/gcc/ada/s-intman-vxworks.ads
new file mode 100644
index 000000000..6c63d7546
--- /dev/null
+++ b/gcc-4.8.3/gcc/ada/s-intman-vxworks.ads
@@ -0,0 +1,105 @@
+------------------------------------------------------------------------------
+-- --
+-- GNAT 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 --
+-- --
+-- S p e c --
+-- --
+-- Copyright (C) 1992-2011, Free Software Foundation, Inc. --
+-- --
+-- 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 3, or (at your option) any later ver- --
+-- sion. GNAT 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. --
+-- --
+-- As a special exception under Section 7 of GPL version 3, you are granted --
+-- additional permissions described in the GCC Runtime Library Exception, --
+-- version 3.1, as published by the Free Software Foundation. --
+-- --
+-- You should have received a copy of the GNU General Public License and --
+-- a copy of the GCC Runtime Library Exception along with this program; --
+-- see the files COPYING3 and COPYING.RUNTIME respectively. If not, see --
+-- <http://www.gnu.org/licenses/>. --
+-- --
+-- GNARL was developed by the GNARL team at Florida State University. --
+-- Extensive contributions were provided by Ada Core Technologies, Inc. --
+-- --
+------------------------------------------------------------------------------
+
+-- This is the VxWorks version of this package
+
+-- This package encapsulates and centralizes information about all
+-- uses of interrupts (or signals), including the target-dependent
+-- mapping of interrupts (or signals) to exceptions.
+
+-- Unlike the original design, System.Interrupt_Management can only
+-- be used for tasking systems.
+
+-- PLEASE DO NOT put any subprogram declarations with arguments of
+-- type Interrupt_ID into the visible part of this package. The type
+-- Interrupt_ID is used to derive the type in Ada.Interrupts, and
+-- adding more operations to that type would be illegal according
+-- to the Ada Reference Manual. This is the reason why the signals
+-- sets are implemented using visible arrays rather than functions.
+
+with System.OS_Interface;
+
+with Interfaces.C;
+
+package System.Interrupt_Management is
+ pragma Preelaborate;
+
+ type Interrupt_Mask is limited private;
+
+ type Interrupt_ID is new Interfaces.C.int
+ range 0 .. System.OS_Interface.Max_Interrupt;
+
+ type Interrupt_Set is array (Interrupt_ID) of Boolean;
+
+ subtype Signal_ID is Interrupt_ID range 0 .. System.OS_Interface.NSIG - 1;
+
+ type Signal_Set is array (Signal_ID) of Boolean;
+
+ -- The following objects serve as constants, but are initialized in the
+ -- body to aid portability. This permits us to use more portable names for
+ -- interrupts, where distinct names may map to the same interrupt ID
+ -- value.
+
+ -- For example, suppose SIGRARE is a signal that is not defined on all
+ -- systems, but is always reserved when it is defined. If we have the
+ -- convention that ID zero is not used for any "real" signals, and SIGRARE
+ -- = 0 when SIGRARE is not one of the locally supported signals, we can
+ -- write:
+ -- Reserved (SIGRARE) := True;
+ -- and the initialization code will be portable.
+
+ Abort_Task_Interrupt : Signal_ID;
+ -- The signal that is used to implement task abort if an interrupt is used
+ -- for that purpose. This is one of the reserved signals.
+
+ Reserve : Interrupt_Set := (others => False);
+ -- Reserve (I) is true iff the interrupt I is one that cannot be permitted
+ -- to be attached to a user handler. The possible reasons are many. For
+ -- example, it may be mapped to an exception used to implement task abort,
+ -- or used to implement time delays.
+
+ procedure Initialize_Interrupts;
+ pragma Import (C, Initialize_Interrupts, "__gnat_install_handler");
+ -- Under VxWorks, there is no signal inheritance between tasks.
+ -- This procedure is used to initialize signal-to-exception mapping in
+ -- each task.
+
+ procedure Initialize;
+ -- Initialize the various variables defined in this package. This procedure
+ -- must be called before accessing any object from this package and can be
+ -- called multiple times (only the first call has any effect).
+
+private
+ type Interrupt_Mask is new System.OS_Interface.sigset_t;
+ -- In some implementation Interrupt_Mask can be represented as a linked
+ -- list.
+
+end System.Interrupt_Management;