--********************************************************************************************************************
-- Created:  9-Mar-2021 22:28:28 by OpenVMS SDL EV3-3      
-- Source:  11-MAY-1993 16:59:08 $1$DGA8085:[LIB_ADA.LIS]KFRHDEF.SDL;1 
--********************************************************************************************************************
with SYSTEM; use SYSTEM;
with STARLET; use STARLET;
with CONDITION_HANDLING; use CONDITION_HANDLING;
 
package KFRHDEF is
 
--  module $KFRHDEF
 
--
-- KNOWN FILE RESIDENT IMAGE HEADER DEFINITIONS
--
 
    KFRH_K_LENGTH		: constant := 12;			--  Length of overhead area 
    KFRH_C_LENGTH		: constant := 12;			--  Length of overhead area 
    KFRH_S_KFRHDEF		: constant := 12;			--  Old size name - synonym
 
--
 
    type KFRH_TYPE is
	record
	    BUFEND	: ADDRESS;					--  Address of end of known file header 
	    ALIAS	: UNSIGNED_WORD;				--  Use secondary name on activation
	    FILLER_1	: UNSIGNED_WORD;				--  SPARE BYTE 
	    SIZE	: UNSIGNED_WORD;				--  Size of dynamic structure 
	    TYP		: UNSIGNED_BYTE;				--  Dynamic structure type 
	    HDRVER	: UNSIGNED_BYTE;				--  Image header version
	    IHD		: STRING(1 .. 0);				--  Offset to decoded Image Header
									--  THE REMAINDER OF THIS STRUCTURE CONTAINS THE IMAGE HEADER OF THE
									--  SPECIFIED KNOWN FILE.  THE LOCATION KFE$L_IMGHDR IN THE KNOWN FILE
									--  ENTRY POINTS KFRH$C_LENGTH INTO THIS STRUCTURE, I.E AT THE IMAGE HEADER
									--  ITSELF.
									-- 
	end record;
 
	    for KFRH_TYPE use 
		record
		    BUFEND	at 0 range 0 .. 31;
		    ALIAS	at 4 range 0 .. 15;
		    FILLER_1	at 6 range 0 .. 15;
		    SIZE	at 8 range 0 .. 15;
		    TYP		at 10 range 0 .. 7;
		    HDRVER	at 11 range 0 .. 7;
		    IHD		at 12 range 0 .. -1;
		end record;
	    for KFRH_TYPE'SIZE use 96;
 
    KFRH_TYPE_INIT : constant KFRH_TYPE := 
	    (BUFEND	=> ADDRESS_ZERO,
	    ALIAS	=> 0,
	    FILLER_1	=> 0,
	    SIZE	=> 0,
	    TYP		=> 0,
	    HDRVER	=> 0,
	    IHD		=> (others => ASCII.NUL));
 
end KFRHDEF;