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Diffstat (limited to 'gcc-4.4.3/gcc/ada/s-intman-vms.ads')
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diff --git a/gcc-4.4.3/gcc/ada/s-intman-vms.ads b/gcc-4.4.3/gcc/ada/s-intman-vms.ads deleted file mode 100644 index cc5124217..000000000 --- a/gcc-4.4.3/gcc/ada/s-intman-vms.ads +++ /dev/null @@ -1,119 +0,0 @@ ------------------------------------------------------------------------------- --- -- --- 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) 1991-2009, 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 Alpha/VMS 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. - --- PLEASE DO NOT add any with-clauses to this package - --- 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 below are --- implemented as visible arrays rather than functions.) - -with System.OS_Interface; - -package System.Interrupt_Management is - pragma Preelaborate; - - type Interrupt_Mask is limited private; - - type Interrupt_ID is new System.OS_Interface.Signal; - - type Interrupt_Set is array (Interrupt_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; - -- Then the initialization code will be portable. - - Abort_Task_Interrupt : Interrupt_ID; - -- The interrupt that is used to implement task abort, if an interrupt is - -- used for that purpose. This is one of the reserved interrupts. - - Keep_Unmasked : Interrupt_Set := (others => False); - -- Keep_Unmasked (I) is true iff the interrupt I is one that must be kept - -- unmasked at all times, except (perhaps) for short critical sections. - -- This includes interrupts that are mapped to exceptions (see - -- System.Interrupt_Exceptions.Is_Exception), but may also include - -- interrupts (e.g. timer) that need to be kept unmasked for other - -- reasons. Where interrupts are implemented as OS signals, and signal - -- masking is per-task, the interrupt should be unmasked in ALL TASKS. - - 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. - - Keep_Masked : Interrupt_Set := (others => False); - -- Keep_Masked (I) is true iff the interrupt I must always be masked. - -- Where interrupts are implemented as OS signals, and signal masking is - -- per-task, the interrupt should be masked in ALL TASKS. There might not - -- be any interrupts in this class, depending on the environment. For - -- example, if interrupts are OS signals and signal masking is per-task, - -- use of the sigwait operation requires the signal be masked in all tasks. - - 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. - -private - use type System.OS_Interface.unsigned_long; - - type Interrupt_Mask is new System.OS_Interface.sigset_t; - - -- Interrupts on VMS are implemented with a mailbox. A QIO read is - -- registered on the Rcv channel and the interrupt occurs by registering - -- a QIO write on the Snd channel. The maximum number of pending - -- interrupts is arbitrarily set at 1000. One nice feature of using - -- a mailbox is that it is trivially extendable to cross process - -- interrupts. - - Rcv_Interrupt_Chan : System.OS_Interface.unsigned_short := 0; - Snd_Interrupt_Chan : System.OS_Interface.unsigned_short := 0; - Interrupt_Mailbox : Interrupt_ID := 0; - Interrupt_Bufquo : System.OS_Interface.unsigned_long := - 1000 * (Interrupt_ID'Size / 8); - -end System.Interrupt_Management; |