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67 lines
2.2 KiB
Plaintext
67 lines
2.2 KiB
Plaintext
;
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; File: QMgrEqu.a
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;
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; Contains: Equates for the Queue Manager
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;
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; Written by: Dave Feldman
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;
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; Copyright: © 1989-1991 by Apple Computer, Inc., all rights reserved.
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;
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; Change History (most recent first):
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;
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; <4> 9/13/91 JSM Cleanup header.
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; <3> 3/17/91 dnf dba, dty, #84977: Change interruptRegs to be the right
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; registers. Add pascalRegs, and other register-related equates.
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; <2> 9/22/90 dnf Add compatibility layer queue refnum
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; <1.0> 9/18/89 dnf Adding to ease for the first time
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;
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; Queue Manager Globals
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QMGlobals record 0, increment
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DTQueuePtr ds.l 1 ; pointer to desktop mgr queue record
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CLQueuePtr ds.l 1 ; pointer to the compatibility layer queue record
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size equ *-QMGlobals
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endr
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; Queue Manager record
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; Note that the first three fields are a standard OS queue, and they need to stay that way.
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QMRec record 0, increment
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qFlags ds.w 1 ; miscellaneous flags [word]
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qHead ds.l 1 ; first element in queue [pointer]
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qTail ds.l 1 ; last element in queue [pointer]
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qType ds.w 1 ; queue refnum/queue type
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qmFlags ds.b 1 ; QM flags
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resrv1 ds.b 1 ; alignment byte
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enQHook ds.l 1 ; hook called before enqueuing
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deQHook ds.l 1 ; hook called just before dequeuing
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stackBase ds.l 1 ; base of A6 stack
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curStack ds.l 1 ; current A6 stack ptr (for i/o)
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highWater ds.l 1 ; checked at each i/o
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dsErr ds.w 1 ; where dsErr
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perf1 ds.l 1 ; for performance measurement
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perf2 ds.l 1
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size equ *-QMRec
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endr
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; Queue Manager record flag bits
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qIsBusy equ 0 ; 1 if queue is busy, 0 if queue is free
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asyncCall equ 1 ; 1 if call is async, 0 if call is sync
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; For now, use static Queue refNum assignment.
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desktopQType equ 22
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fsCompatQType equ 23
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clStackSize equ 1500 ; compatibility layer gets 1500 bytes of stack
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; Definitions for register saving: sets of registers, and register saving opcode
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interruptRegs reg a4-a6/d4-d7 ; the ones that the interrupt dispatchers do not save
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pascalRegs reg a2-a6/d3-d7 ; registers that Pascal needs protected
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MOVEMSPPostIncOpcode equ $4CDF ; movem.l (sp)+, opcode
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VolatileInterruptRegisterMask equ $70F0 ; a4-a6/d4-d7 register mask
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