boot3/Toolbox/DataAccessMgr/DataAccessPackEntry.a
Elliot Nunn 5b0f0cc134 Bring in CubeE sources
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2017-12-26 10:02:57 +08:00

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