--********************************************************************************************************************
-- Created:  9-Mar-2021 22:28:27 by OpenVMS SDL EV3-3      
-- Source:  02-JAN-2002 15:17:28 $1$DGA8085:[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
 
    IMP_S_IMPDEF		: constant := 112;
 
    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	: ADDRESS;					--  ADDRESS OF FIRST FREE PAGE 
									--  IN THIS (IMAGE OR PROCESS)
									--  I/O SEGMENT
	    IOSEGLEN	: UNSIGNED_LONGWORD;				--  ! OF FREE BYTES AT ABOVE ADDR 
	    FREEPGLH	: ADDRESS_ARRAY (1 .. 2);			--  FREE PAGE LIST HEAD 
	    SAVED_SP	: UNSIGNED_LONGWORD;				--  SAVED VALUE OF SP AT ENTRY 
	    IFABTBL	: ADDRESS;					--  IFAB TABLE ADDR 
	    IRABTBL	: ADDRESS;					--  IRAB TABLE ADDR 
	    ENTPERSEG	: UNSIGNED_WORD;				--  ! OF SLOTS PER TABLE SEGMENT 
	    NUM_IFABS	: UNSIGNED_WORD;				--  NUMBER OF IFABS & IRABS CURRENTLY ALLOCATED 
	    ASB_LOOKASIDE_LIST	: ADDRESS_ARRAY (1 .. 2);		--  ASB LOOKASIDE LIST HEAD
	    IFBTBLINK	: ADDRESS;					--  START OF IFAB TABLE (LINK TO NEXT SEGMENT) 
	    FILLER_2	: UNSIGNED_LONGWORD_ARRAY (1 .. 15);		--  FIRST IFAB TABLE SEGMENT 
	    IRBTBLINK	: ADDRESS;					--  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;
		    ASB_LOOKASIDE_LIST	at 36 range 0 .. 63;
		    IFBTBLINK	at 44 range 0 .. 31;
		    FILLER_2	at 48 range 0 .. 479;
		    IRBTBLINK	at 108 range 0 .. 31;
		end record;
	    for IMP_TYPE'SIZE use 896;
 
    IMP_TYPE_INIT : constant IMP_TYPE := 
	    (
	    RMSSTATUS	=> IMP_RMSSTATUS_TYPE_INIT,
	    PROT	=> 0,
	    FILLER_1	=> 0,
	    IOSEGADDR	=> ADDRESS_ZERO,
	    IOSEGLEN	=> 0,
	    FREEPGLH	=> (others => ADDRESS_ZERO),
	    SAVED_SP	=> 0,
	    IFABTBL	=> ADDRESS_ZERO,
	    IRABTBL	=> ADDRESS_ZERO,
	    ENTPERSEG	=> 0,
	    NUM_IFABS	=> 0,
	    ASB_LOOKASIDE_LIST	=> (others => ADDRESS_ZERO),
	    IFBTBLINK	=> ADDRESS_ZERO,
	    FILLER_2	=> (others => 0),
	    IRBTBLINK	=> ADDRESS_ZERO);
 
end IMPDEF;