--
--****************************************************************************
--*                                                                          *
--*  Copyright (c) 2001                                                      *
--*  by DIGITAL Equipment Corporation, Maynard, Mass.                        *
--*                                                                          *
--*  This software is furnished under a license and may be used and  copied  *
--*  only  in  accordance  with  the  terms  of  such  license and with the  *
--*  inclusion of the above copyright notice.  This software or  any  other  *
--*  copies  thereof may not be provided or otherwise made available to any  *
--*  other person.  No title to and ownership of  the  software  is  hereby  *
--*  transferred.                                                            *
--*                                                                          *
--*  The information in this software is subject to change  without  notice  *
--*  and  should  not  be  construed  as  a commitment by DIGITAL Equipment  *
--*  Corporation.                                                            *
--*                                                                          *
--*  DIGITAL assumes no responsibility for the use or  reliability  of  its  *
--*  software on equipment which is not supplied by DIGITAL.                 *
--*                                                                          *
--****************************************************************************
--********************************************************************************************************************
-- Created: 15-MAR-2001 22:52:29 by OpenVMS SDL EV1-33     
-- Source:   2-SEP-1989 10:43:06 $11$DUA933:[LIB_ADA.LIS]IMPDEF.SDL;1 
--********************************************************************************************************************
with SYSTEM; use SYSTEM;
with STARLET; use STARLET;
with CONDITION_HANDLING; use CONDITION_HANDLING;
 
package IMPDEF is
 
--  module $IMPDEF
 
--+
--        RMS32 IMPURE AREA OFFSET DEFINITIONS
--
---
 
    IMP_C_ASYEFN		: constant := 30;			--  EFN FOR ASYNC WAITS 
    IMP_C_IOREFN		: constant := 30;			--  EFN FOR IO RUNDOWN SYNCHRONIZATION 
    IMP_C_ASYQIOEFN		: constant := 31;			--  EFN FOR ASYNC QIOS 
    IMP_C_SYNCEFN		: constant := 27;			--  BASE EFN FOR SYNCHRONOUS QIO'S 
 
-- (28, 29 ALSO USED)
 
    IMP_C_MBXEFN		: constant := 26;			--  EFN FOR QIOS TO NETWORK MAILBOXES 
 
--
 
    IMP_C_NPIOFILES		: constant := 63;			--  ! OF PIO SEGMENT FILES 
    IMP_C_ENTPERSEG		: constant := 15;			--  ! OF IIO SEGMENT SLOTS 
 
-- PER INDEX TABLE SEGMENT
 
    type IMP_RMSSTATUS_TYPE is						--  RMS OVERALL STATUS 
	record
	    IIOS	: BOOLEAN;					--  SET IF THIS IS THE IMAGE 
									--  I.O SEGMENT
	    AST		: BOOLEAN;					--  SET IF RUNNING AT EXEC AST LEVEL 
	    TEMP1	: BOOLEAN;					--  TEMPORARY FLAG 
	    TEMP2	: BOOLEAN;					--  " 
	    IORUNDOWN	: BOOLEAN;					--  SET IF IO RUNDOWN IN PROGRESS 
	    NOP0BUFS	: BOOLEAN;					--  SET IF RMS USE OF P0 FOR IMAGE I/O DISABLED 
	    RUH		: BOOLEAN;					--  Set if within RMS RU Handler 
	    RECOVERY	: BOOLEAN;					--  SET IF RECOVERY IN PROGRESS
	    RUH_SYNCH	: BOOLEAN;					--  SET IF RMS IO MUST SYNCH
									--  WITH THE RU HANDLER
	    FILLER_1	: UNSIGNED_7;
	end record;
 
	    for IMP_RMSSTATUS_TYPE use 
		record
		    IIOS	at 0 range 0 .. 0;
		    AST		at 0 range 1 .. 1;
		    TEMP1	at 0 range 2 .. 2;
		    TEMP2	at 0 range 3 .. 3;
		    IORUNDOWN	at 0 range 4 .. 4;
		    NOP0BUFS	at 0 range 5 .. 5;
		    RUH		at 0 range 6 .. 6;
		    RECOVERY	at 0 range 7 .. 7;
		    RUH_SYNCH	at 1 range 0 .. 0;
		    FILLER_1	at 1 range 1 .. 7;
		end record;
	    for IMP_RMSSTATUS_TYPE'SIZE use 16;
 
    IMP_RMSSTATUS_TYPE_INIT : constant IMP_RMSSTATUS_TYPE := 
	    (IIOS	=> FALSE,
	    AST		=> FALSE,
	    TEMP1	=> FALSE,
	    TEMP2	=> FALSE,
	    IORUNDOWN	=> FALSE,
	    NOP0BUFS	=> FALSE,
	    RUH		=> FALSE,
	    RECOVERY	=> FALSE,
	    RUH_SYNCH	=> FALSE,
	    FILLER_1	=> 0);
 
    type IMP_TYPE is
	record
	    RMSSTATUS	: IMP_RMSSTATUS_TYPE;				--  RMS OVERALL STATUS 
	    PROT	: UNSIGNED_BYTE;				--  PROTECTION FOR I/O BUFFER PAGES 
	    FILLER_1	: UNSIGNED_BYTE;				--  SPARE 
	    IOSEGADDR	: UNSIGNED_LONGWORD;				--  ADDRESS OF FIRST FREE PAGE 
									--  IN THIS (IMAGE OR PROCESS)
									--  I/O SEGMENT
	    IOSEGLEN	: UNSIGNED_LONGWORD;				--  ! OF FREE BYTES AT ABOVE ADDR 
	    FREEPGLH	: UNSIGNED_LONGWORD_ARRAY (1 .. 2);		--  FREE PAGE LIST HEAD 
	    SAVED_SP	: UNSIGNED_LONGWORD;				--  SAVED VALUE OF SP AT ENTRY 
	    IFABTBL	: UNSIGNED_LONGWORD;				--  IFAB TABLE ADDR 
	    IRABTBL	: UNSIGNED_LONGWORD;				--  IRAB TABLE ADDR 
	    ENTPERSEG	: UNSIGNED_WORD;				--  ! OF SLOTS PER TABLE SEGMENT 
	    NUM_IFABS	: UNSIGNED_WORD;				--  NUMBER OF IFABS & IRABS CURRENTLY ALLOCATED 
	    IFBTBLINK	: UNSIGNED_LONGWORD;				--  START OF IFAB TABLE (LINK TO NEXT SEGMENT) 
	    FILLER_2	: UNSIGNED_LONGWORD_ARRAY (1 .. 15);		--  FIRST IFAB TABLE SEGMENT 
	    IRBTBLINK	: UNSIGNED_LONGWORD;				--  START OF IRAB TABLE (LINK TO NEXT SEGMENT) 
	end record;
 
	    for IMP_TYPE use 
		record
		    RMSSTATUS	at 0 range 0 .. 15;
		    PROT	at 2 range 0 .. 7;
		    FILLER_1	at 3 range 0 .. 7;
		    IOSEGADDR	at 4 range 0 .. 31;
		    IOSEGLEN	at 8 range 0 .. 31;
		    FREEPGLH	at 12 range 0 .. 63;
		    SAVED_SP	at 20 range 0 .. 31;
		    IFABTBL	at 24 range 0 .. 31;
		    IRABTBL	at 28 range 0 .. 31;
		    ENTPERSEG	at 32 range 0 .. 15;
		    NUM_IFABS	at 34 range 0 .. 15;
		    IFBTBLINK	at 36 range 0 .. 31;
		    FILLER_2	at 40 range 0 .. 479;
		    IRBTBLINK	at 100 range 0 .. 31;
		end record;
	    for IMP_TYPE'SIZE use 832;
 
    IMP_TYPE_INIT : constant IMP_TYPE := 
	    (
	    RMSSTATUS	=> IMP_RMSSTATUS_TYPE_INIT,
	    PROT	=> 0,
	    FILLER_1	=> 0,
	    IOSEGADDR	=> 0,
	    IOSEGLEN	=> 0,
	    FREEPGLH	=> (others => 0),
	    SAVED_SP	=> 0,
	    IFABTBL	=> 0,
	    IRABTBL	=> 0,
	    ENTPERSEG	=> 0,
	    NUM_IFABS	=> 0,
	    IFBTBLINK	=> 0,
	    FILLER_2	=> (others => 0),
	    IRBTBLINK	=> 0);
 
end IMPDEF;