--********************************************************************************************************************
-- Created:  9-Mar-2021 22:28:26 by OpenVMS SDL EV3-3      
-- Source:  22-APR-1993 11:20:18 $1$DGA8085:[LIB_ADA.LIS]IFDDEF.SDL;1 
--********************************************************************************************************************
with SYSTEM; use SYSTEM;
with STARLET; use STARLET;
with CONDITION_HANDLING; use CONDITION_HANDLING;
 
package IFDDEF is
 
--  module $IFDDEF
 
--+
-- IMAGE FILE DESCRIPTOR BLOCK - RETURNED BY IMAGE ACTIVATOR
---
 
    IFD_M_EXEONLY		: constant := 16#00000001#;
    IFD_M_PRIV			: constant := 16#00000002#;
    IFD_M_SETVECTOR		: constant := 16#00000004#;
    IFD_K_LENGTH		: constant := 28;			-- LENGTH OF FIXED AREA OF IFD 
    IFD_C_LENGTH		: constant := 28;			-- LENGTH OF FIXED AREA OF IFD 
    IFD_S_IFDDEF		: constant := 28;
 
    type IFD_FLAGS_TYPE is						-- IMAGE FILE DESCRIPTOR FLAGS 
	record
	    EXEONLY	: BOOLEAN;					-- EXECUTE ONLY FILE 
	    PRIV	: BOOLEAN;					-- IMAGE INSTALLED WITH ENHANCED PRIVILEGE 
	    SETVECTOR	: BOOLEAN;					-- PRIVILEGED VECTORS TO BE INSTALLED 
	    FILLER_1	: UNSIGNED_13;
	end record;
 
	    for IFD_FLAGS_TYPE use 
		record
		    EXEONLY	at 0 range 0 .. 0;
		    PRIV	at 0 range 1 .. 1;
		    SETVECTOR	at 0 range 2 .. 2;
		    FILLER_1	at 0 range 3 .. 15;
		end record;
	    for IFD_FLAGS_TYPE'SIZE use 16;
 
    IFD_FLAGS_TYPE_INIT : constant IFD_FLAGS_TYPE := 
	    (EXEONLY	=> FALSE,
	    PRIV	=> FALSE,
	    SETVECTOR	=> FALSE,
	    FILLER_1	=> 0);
 
    type IFD_TYPE is
	record
	    SIZE	: UNSIGNED_WORD;				-- SIZE IN BYTES OF IMAGE FILE DESCRIPTOR 
	    FILNAMOFF	: UNSIGNED_WORD;				-- OFFSET TO ASCIC
									-- FULLY QUALIFIED FILE SPEC
	    FILLER_1	: UNSIGNED_WORD;				-- RESERVED OFFSET 1 
	    FILLER_2	: UNSIGNED_WORD;				-- RESERVED OFFSET 2 
	    CHAN	: UNSIGNED_WORD;				-- CHANNEL ON WHICH IMAGE FILE IS OPEN 
	    CMCHAN	: UNSIGNED_WORD;				-- COMPATIBILITY MODE CHANNEL 
	    CMKFIADR	: ADDRESS;					-- COMPATIBILITY MODE IMAGE 
									-- KNOWN FILE ENTRY ADDRESS OR 0
	    FLAGS	: IFD_FLAGS_TYPE;				-- IMAGE FILE DESCRIPTOR FLAGS 
	    FILLER_3	: UNSIGNED_WORD;				-- SPARE WORD 
	    CURPROG	: UNSIGNED_QUADWORD;				-- STRING DESCRIPTOR FOR 
									-- FULLY QUALIFIED FILE SPEC OF
									-- RUNNING PROGRAM
	end record;
 
	    for IFD_TYPE use 
		record
		    SIZE	at 0 range 0 .. 15;
		    FILNAMOFF	at 2 range 0 .. 15;
		    FILLER_1	at 4 range 0 .. 15;
		    FILLER_2	at 6 range 0 .. 15;
		    CHAN	at 8 range 0 .. 15;
		    CMCHAN	at 10 range 0 .. 15;
		    CMKFIADR	at 12 range 0 .. 31;
		    FLAGS	at 16 range 0 .. 15;
		    FILLER_3	at 18 range 0 .. 15;
		    CURPROG	at 20 range 0 .. 63;
		end record;
	    for IFD_TYPE'SIZE use 224;
 
    IFD_TYPE_INIT : constant IFD_TYPE := 
	    (SIZE	=> 0,
	    FILNAMOFF	=> 0,
	    FILLER_1	=> 0,
	    FILLER_2	=> 0,
	    CHAN	=> 0,
	    CMCHAN	=> 0,
	    CMKFIADR	=> ADDRESS_ZERO,
	    FLAGS	=> IFD_FLAGS_TYPE_INIT,
	    FILLER_3	=> 0,
	    CURPROG	=> (0, 0));
 
end IFDDEF;