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64 lines
1.8 KiB
Plaintext
64 lines
1.8 KiB
Plaintext
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; File: DataAccessPackEntry.a
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;
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; Contains: PACK 13 entry - Data Access Manager (stolen from MiscPatches.a)
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;
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; Written by: Tim Nichols
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;
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; Copyright: © 1992 by Apple Computer, Inc., all rights reserved.
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;
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; This file is used in these builds: ROM
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;
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; Change History (most recent first):
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;
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; <1> 5/20/92 TN first checked in
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;
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; To Do:
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;
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LOAD 'StandardEqu.d'
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INCLUDE 'DispatchHelperPriv.a'
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INCLUDE 'DatabaseAccess.a'
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;___________________________________________________________________________________
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;
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; PACK 13 entry - Data Access Manager
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;
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;___________________________________________________________________________________
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Pack13 PROC EXPORT
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Pack13Handle EQU App2Packs+20
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Pack13Globals EQU ExpandMemRec.emPack13Globals
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;
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; If this is not InitDBPack, check to make sure globals are allocated
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;
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TST.B D0 ; is this InitDBPack (selector 0)?
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BEQ.S @globalsOK ; yes, go for it
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MOVE.L ExpandMem, A0 ; get expanded memory area
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TST.L ExpandMemRec.emSnarfGlobals(A0) ; are globals allocated?
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BEQ.S @noGlobals ; yes, so continue
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;
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; Set up for ProcHelper normally
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;
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@globalsOK MOVE.L Pack13Handle,A0 ; A0 = handle to PACK
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MOVE.L ExpandMem, A1 ; A1 = expanded memory area
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ADD.W #Pack13Globals,A1 ; A1 = pointer to PACK use count
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_ProcHelper ; let ProcHelper take over
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;
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; Attempt to call Database Access Manager before InitDBPack
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;
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@noGlobals MOVE.L (SP)+,A0 ; get caller's return address
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LSR.W #8,D0 ; D0.W = words of parameters
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LSL.W #1,D0 ; D0.W = bytes of parameters
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ADD.W D0,SP ; strip off parameters
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MOVE.W #rcDBPackNotInited,(SP) ; return rcDBPackNotInited
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JMP (A0) ; return to caller
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ENDPROC ; Pack13Entry
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END ; of file
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