6c1e24d3a2
2003-11-24 Jose Ruiz <ruiz@act-europe.fr> * Makefile.in: Use 5zintman.ads for VxWorks targets. This file avoid confusion between signals and interrupts. * 5zintman.ads: New File. * 5zintman.adb: Replace Exception_Interrupts by Exception_Signals, and add exception signals to the set of unmasked signals. * 5ztaprop.adb: Use Abort_Task_Signal instead of Abort_Task_Interrupt to avoid confusion between signals and interrupts. Add to Unblocked_Signal_Mask the set of signals that are in Keep_Unmasked. * 7sinmaop.adb: Adding a check to see whether the Interrupt_ID we want to unmask is in the range of Keep_Unmasked (in procedure Interrupt_Self_Process). The reason is that the index type of the Keep_Unmasked array is not always Interrupt_ID; it may be a subtype of Interrupt_ID. 2003-11-24 Gary Dismukes <dismukes@gnat.com> * exp_util.adb: (Remove_Side_Effects): Condition constantness of object created for a an unchecked type conversion on the constantness of the expression to ensure the correct value for 'Constrained when passing components of view-converted class-wide objects. 2003-11-24 Robert Dewar <dewar@gnat.com> * par-load.adb (Load): Improve handling of misspelled and missing units Removes several cases of compilation abandoned messages * lib.adb: (Remove_Unit): New procedure * lib.ads: (Remove_Unit): New procedure * lib-load.adb: Minor reformatting 2003-11-24 Vincent Celier <celier@gnat.com> * make.adb: (Gnatmake, Initialize): Call Usage instead of Makeusg directly (Marking_Label): Label to mark processed source files. Incremented for each executable. (Gnatmake): Increase Marking_Labet for each executable (Is_Marked): Compare against marking label (Mark): Mark with marking label 2003-11-24 Jerome Guitton <guitton@act-europe.fr> * s-thread.ads: Move the declaration of the TSD for System.Threads to System.Soft_Links. Add some comments. * Makefile.in: Added target pair for s-thread.adb for cert runtime. (rts-cert): build a single relocatable object for the run-time lib. Fix perms. 2003-11-24 Vasiliy Fofanov <fofanov@act-europe.fr> * Make-lang.in: Use gnatls rather than gcc to obtain the location of GNAT RTL for crosstools build. 2003-11-24 Sergey Rybin <rybin@act-europe.fr> * opt.adb (Tree_Write): Gnat_Version_String is now a function, so we can not use it as before (that is, as a variable) when dumping it into the tree file. Add a local variable to store the result of this function and to be used as the string to be written into the tree. * scn.adb (Initialize_Scanner): Add comments explaining the recent changes. * sinput.adb (Source_First, Source_Last): In case of Internal_Source_File, replace returning attributes of Internal_Source_Ptr (which is wrong) with returning attributes of Internal_Source. 2003-11-24 Ed Schonberg <schonberg@gnat.com> * sem_ch3.adb: (New_Concatenation_Op): Proper name for New_Binary_Operator, only used for implicit concatenation operators. Code cleanup. * sem_elab.adb: (Check_Elab_Call): Set No_Elaboration_Check appropriately on calls in task bodies that are in the scope of a Suppress pragma. (Check_A Call): Use the flag to prevent spurious elaboration checks. * sinfo.ads, sinfo.adb: New flag No_Elaboration_Check on function/procedure calls, to properly suppress checks on calls in task bodies that are within a local suppress pragma. * exp_ch4.adb: (Expand_Concatenate_Other): Use the proper integer type for the expression for the upper bound, to avoid universal_integer computations when possible. From-SVN: r73874
124 lines
6.2 KiB
Ada
124 lines
6.2 KiB
Ada
------------------------------------------------------------------------------
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-- --
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-- GNU ADA RUN-TIME LIBRARY (GNARL) COMPONENTS --
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-- --
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-- 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 --
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-- --
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-- S p e c --
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-- --
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-- Copyright (C) 1992-2003 Free Software Foundation, Inc. --
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-- --
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-- GNARL 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 2, or (at your option) any later ver- --
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-- sion. GNARL 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. See the GNU General Public License --
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-- for more details. You should have received a copy of the GNU General --
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-- Public License distributed with GNARL; see file COPYING. If not, write --
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-- to the Free Software Foundation, 59 Temple Place - Suite 330, Boston, --
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-- MA 02111-1307, USA. --
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-- --
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-- As a special exception, if other files instantiate generics from this --
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-- unit, or you link this unit with other files to produce an executable, --
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-- this unit does not by itself cause the resulting executable to be --
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-- covered by the GNU General Public License. This exception does not --
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-- however invalidate any other reasons why the executable file might be --
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-- covered by the GNU Public License. --
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-- --
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-- GNARL was developed by the GNARL team at Florida State 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 VxWorks version of this package.
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-- This package encapsulates and centralizes information about all
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-- uses of interrupts (or signals), including the target-dependent
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-- mapping of interrupts (or signals) to exceptions.
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-- Unlike the original design, System.Interrupt_Management can only
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-- be used for tasking systems.
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-- PLEASE DO NOT remove the Elaborate_Body pragma from this package.
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-- Elaboration of this package should happen early, as most other
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-- initializations depend on it. Forcing immediate elaboration of
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-- the body also helps to enforce the design assumption that this
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-- is a second-level package, just one level above System.OS_Interface
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-- with no cross-dependencies.
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-- PLEASE DO NOT put any subprogram declarations with arguments of
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-- type Interrupt_ID into the visible part of this package. The type
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-- Interrupt_ID is used to derive the type in Ada.Interrupts, and
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-- adding more operations to that type would be illegal according
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-- to the Ada Reference Manual. This is the reason why the signals
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-- sets are implemeneted using visible arrays rather than functions.
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with System.OS_Interface;
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-- used for sigset_t
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with Interfaces.C;
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-- used for int
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package System.Interrupt_Management is
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pragma Elaborate_Body;
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type Interrupt_Mask is limited private;
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type Interrupt_ID is new Interfaces.C.int
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range 0 .. System.OS_Interface.Max_Interrupt;
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type Interrupt_Set is array (Interrupt_ID) of Boolean;
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subtype Signal_ID is Interrupt_ID
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range 0 .. Interfaces.C."-" (System.OS_Interface.NSIG, 1);
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type Signal_Set is array (Signal_ID) of Boolean;
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-- The following objects serve as constants, but are initialized
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-- in the body to aid portability. This permits us to use more
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-- portable names for interrupts, where distinct names may map to
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-- the same interrupt ID value.
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--
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-- For example, suppose SIGRARE is a signal that is not defined on
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-- all systems, but is always reserved when it is defined. If we
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-- have the convention that ID zero is not used for any "real"
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-- signals, and SIGRARE = 0 when SIGRARE is not one of the locally
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-- supported signals, we can write
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-- Reserved (SIGRARE) := true;
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-- and the initialization code will be portable.
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Abort_Task_Signal : Signal_ID;
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-- The signal that is used to implement task abortion if
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-- an interrupt is used for that purpose. This is one of the
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-- reserved signals.
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Keep_Unmasked : Signal_Set := (others => False);
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-- Keep_Unmasked (I) is true iff the signal I is one that must
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-- that must be kept unmasked at all times, except (perhaps) for
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-- short critical sections. This includes signals that are
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-- mapped to exceptions, but may also include interrupts
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-- (e.g. timer) that need to be kept unmasked for other
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-- reasons. Where signal masking is per-task, the signal should be
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-- unmasked in ALL TASKS.
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Reserve : Interrupt_Set := (others => False);
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-- Reserve (I) is true iff the interrupt I is one that cannot be
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-- permitted to be attached to a user handler. The possible reasons
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-- are many. For example, it may be mapped to an exception used to
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-- implement task abortion, or used to implement time delays.
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procedure Initialize_Interrupts;
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-- On systems where there is no signal inheritance between tasks (e.g
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-- VxWorks, GNU/LinuxThreads), this procedure is used to initialize
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-- interrupts handling in each task. Otherwise this function should
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-- only be called by initialize in this package body.
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private
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type Interrupt_Mask is new System.OS_Interface.sigset_t;
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-- In some implementation Interrupt_Mask can be represented
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-- as a linked list.
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end System.Interrupt_Management;
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