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Diffstat (limited to 'gcc-4.9/gcc/ada/s-inmaop-vms.adb')
| -rw-r--r-- | gcc-4.9/gcc/ada/s-inmaop-vms.adb | 303 |
1 files changed, 303 insertions, 0 deletions
diff --git a/gcc-4.9/gcc/ada/s-inmaop-vms.adb b/gcc-4.9/gcc/ada/s-inmaop-vms.adb new file mode 100644 index 000000000..b99b155f3 --- /dev/null +++ b/gcc-4.9/gcc/ada/s-inmaop-vms.adb @@ -0,0 +1,303 @@ +------------------------------------------------------------------------------ +-- -- +-- GNAT RUN-TIME LIBRARY (GNARL) COMPONENTS -- +-- -- +-- SYSTEM.INTERRUPT_MANAGEMENT.OPERATIONS -- +-- -- +-- B o d y -- +-- -- +-- Copyright (C) 1992-2009, 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 a OpenVMS/Alpha version of this package + +with System.OS_Interface; +with System.Aux_DEC; +with System.Parameters; +with System.Tasking; +with System.Tasking.Initialization; +with System.Task_Primitives; +with System.Task_Primitives.Operations; +with System.Task_Primitives.Operations.DEC; + +with Ada.Unchecked_Conversion; + +package body System.Interrupt_Management.Operations is + + use System.OS_Interface; + use System.Parameters; + use System.Tasking; + use type unsigned_short; + + function To_Address is + new Ada.Unchecked_Conversion + (Task_Id, System.Task_Primitives.Task_Address); + + package POP renames System.Task_Primitives.Operations; + + ---------------------------- + -- Thread_Block_Interrupt -- + ---------------------------- + + procedure Thread_Block_Interrupt (Interrupt : Interrupt_ID) is + pragma Warnings (Off, Interrupt); + begin + null; + end Thread_Block_Interrupt; + + ------------------------------ + -- Thread_Unblock_Interrupt -- + ------------------------------ + + procedure Thread_Unblock_Interrupt (Interrupt : Interrupt_ID) is + pragma Warnings (Off, Interrupt); + begin + null; + end Thread_Unblock_Interrupt; + + ------------------------ + -- Set_Interrupt_Mask -- + ------------------------ + + procedure Set_Interrupt_Mask (Mask : access Interrupt_Mask) is + pragma Warnings (Off, Mask); + begin + null; + end Set_Interrupt_Mask; + + procedure Set_Interrupt_Mask + (Mask : access Interrupt_Mask; + OMask : access Interrupt_Mask) + is + pragma Warnings (Off, Mask); + pragma Warnings (Off, OMask); + begin + null; + end Set_Interrupt_Mask; + + ------------------------ + -- Get_Interrupt_Mask -- + ------------------------ + + procedure Get_Interrupt_Mask (Mask : access Interrupt_Mask) is + pragma Warnings (Off, Mask); + begin + null; + end Get_Interrupt_Mask; + + -------------------- + -- Interrupt_Wait -- + -------------------- + + function To_unsigned_long is new + Ada.Unchecked_Conversion (System.Aux_DEC.Short_Address, unsigned_long); + + function Interrupt_Wait (Mask : access Interrupt_Mask) + return Interrupt_ID + is + Self_ID : constant Task_Id := Self; + Iosb : IO_Status_Block_Type := (0, 0, 0); + Status : Cond_Value_Type; + + begin + + -- A QIO read is registered. The system call returns immediately + -- after scheduling an AST to be fired when the operation + -- completes. + + Sys_QIO + (Status => Status, + Chan => Rcv_Interrupt_Chan, + Func => IO_READVBLK, + Iosb => Iosb, + Astadr => + POP.DEC.Interrupt_AST_Handler'Access, + Astprm => To_Address (Self_ID), + P1 => To_unsigned_long (Interrupt_Mailbox'Address), + P2 => Interrupt_ID'Size / 8); + + pragma Assert ((Status and 1) = 1); + + loop + + -- Wait to be woken up. Could be that the AST has fired, + -- in which case the Iosb.Status variable will be non-zero, + -- or maybe the wait is being aborted. + + POP.Sleep + (Self_ID, + System.Tasking.Interrupt_Server_Blocked_On_Event_Flag); + + if Iosb.Status /= 0 then + if (Iosb.Status and 1) = 1 + and then Mask (Signal (Interrupt_Mailbox)) + then + return Interrupt_Mailbox; + else + return 0; + end if; + else + POP.Unlock (Self_ID); + + if Single_Lock then + POP.Unlock_RTS; + end if; + + System.Tasking.Initialization.Undefer_Abort (Self_ID); + System.Tasking.Initialization.Defer_Abort (Self_ID); + + if Single_Lock then + POP.Lock_RTS; + end if; + + POP.Write_Lock (Self_ID); + end if; + end loop; + end Interrupt_Wait; + + ---------------------------- + -- Install_Default_Action -- + ---------------------------- + + procedure Install_Default_Action (Interrupt : Interrupt_ID) is + pragma Warnings (Off, Interrupt); + begin + null; + end Install_Default_Action; + + --------------------------- + -- Install_Ignore_Action -- + --------------------------- + + procedure Install_Ignore_Action (Interrupt : Interrupt_ID) is + pragma Warnings (Off, Interrupt); + begin + null; + end Install_Ignore_Action; + + ------------------------- + -- Fill_Interrupt_Mask -- + ------------------------- + + procedure Fill_Interrupt_Mask (Mask : access Interrupt_Mask) is + begin + Mask.all := (others => True); + end Fill_Interrupt_Mask; + + -------------------------- + -- Empty_Interrupt_Mask -- + -------------------------- + + procedure Empty_Interrupt_Mask (Mask : access Interrupt_Mask) is + begin + Mask.all := (others => False); + end Empty_Interrupt_Mask; + + --------------------------- + -- Add_To_Interrupt_Mask -- + --------------------------- + + procedure Add_To_Interrupt_Mask + (Mask : access Interrupt_Mask; + Interrupt : Interrupt_ID) + is + begin + Mask (Signal (Interrupt)) := True; + end Add_To_Interrupt_Mask; + + -------------------------------- + -- Delete_From_Interrupt_Mask -- + -------------------------------- + + procedure Delete_From_Interrupt_Mask + (Mask : access Interrupt_Mask; + Interrupt : Interrupt_ID) + is + begin + Mask (Signal (Interrupt)) := False; + end Delete_From_Interrupt_Mask; + + --------------- + -- Is_Member -- + --------------- + + function Is_Member + (Mask : access Interrupt_Mask; + Interrupt : Interrupt_ID) return Boolean + is + begin + return Mask (Signal (Interrupt)); + end Is_Member; + + ------------------------- + -- Copy_Interrupt_Mask -- + ------------------------- + + procedure Copy_Interrupt_Mask + (X : out Interrupt_Mask; + Y : Interrupt_Mask) + is + begin + X := Y; + end Copy_Interrupt_Mask; + + ---------------------------- + -- Interrupt_Self_Process -- + ---------------------------- + + procedure Interrupt_Self_Process (Interrupt : Interrupt_ID) is + Status : Cond_Value_Type; + begin + Sys_QIO + (Status => Status, + Chan => Snd_Interrupt_Chan, + Func => IO_WRITEVBLK, + P1 => To_unsigned_long (Interrupt'Address), + P2 => Interrupt_ID'Size / 8); + + -- The following could use a comment ??? + + pragma Assert ((Status and 1) = 1); + end Interrupt_Self_Process; + + -------------------------- + -- Setup_Interrupt_Mask -- + -------------------------- + + procedure Setup_Interrupt_Mask is + begin + null; + end Setup_Interrupt_Mask; + +begin + Interrupt_Management.Initialize; + Environment_Mask := (others => False); + All_Tasks_Mask := (others => True); + + for J in Interrupt_ID loop + if Keep_Unmasked (J) then + Environment_Mask (Signal (J)) := True; + All_Tasks_Mask (Signal (J)) := False; + end if; + end loop; +end System.Interrupt_Management.Operations; |