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1 files changed, 303 insertions, 0 deletions

diff --git a/gcc/ada/s-inmaop-vms.adb b/gcc/ada/s-inmaop-vms.adb
new file mode 100644
index 000000000..b99b155f3
--- /dev/null
+++ b/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;