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106 lines
3.3 KiB
Plaintext
106 lines
3.3 KiB
Plaintext
;
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; File: VectorTablePatch.a
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;
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; Contains: This contains macros used to create the ROM vectorization
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; patches applied by the Vectorization tool. The user
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; needs to assemble this file directly, and pass in the name of
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; the vector table source file ( VectorTable.a ) on the command
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; line with:
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;
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; Asm VectorTablePatch.a -d "&VECTORTABLE='filename'"
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;
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; Written by: Kurt Clark
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;
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; Copyright: © 1992-1993 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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; <SM3> 2/21/93 kc Change to case on change macros to create empty module for
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; routines that we don't want to vectorize, so that we do not
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; generate a "non vectorized routine warning"
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; <SM2> 12/3/92 RB Added the feature has2MegOrMore.
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; <1> 12/2/92 kc first checked in
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; To Do:
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;
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MACHINE mc68020
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Case On
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kDoNotPatch Equ 1 ; info table format version
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kDirectVector Equ 1 ; direct vector type
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kIndirectVector Equ 2 ; indirect vector type
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Macro ; nothing to do here but we will generate an empty patch
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&Name vDataTable ; module so the vectorize tool will not generate a
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&Name Proc Export ; "Non vectorized routine" warning.
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EndProc
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EndMacro
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Macro ; nothing to do here but we will generate an empty patch
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&Name vNoVector ; module so the vectorize tool will not generate a
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&Name Proc Export ; "Non vectorized routine" warning.
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EndProc
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EndMacro
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Macro ; At some point we may decide to administer atraps
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&Name vATrap &TNum ; with the same technique we use for ROM vectors.
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&Name Proc Export ; nothing to do now but we will generate an empty patch
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EndProc ; module so the vectorize tool will not generate a
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EndMacro ; "Non vectorized routine" warning.
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Macro ; This is used for any vectors where performance is
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&Name vDirect &TVec, &CVec, &AReg ; important enough to warrant a seperate low memory vector.
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&Name Proc Export ; At this point we are not administering direct vectors.
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EndProc ; nothing to do here but we will generate an empty patch
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EndMacro ; module so the vectorize tool will not generate a
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; "Non vectorized routine" warning.
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Macro
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&Name vIndirect &TVec, &CVec, &AReg, &Cond
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; Make sure that we want to create a vector for this entry
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If &Name = '' Then ; check name
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AError 'Name missing from vIndirect Macro'
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Exitm
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Endif
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If &Cond '' Then ; check conditional
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If &Type(&Cond) = 'UNDEFINED' Then
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&Name proc export ; generate an empty patch
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endproc
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Exitm
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ElseIf Not &Eval(&Cond) Then
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&Name proc export ; generate an empty patch
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endproc
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Exitm
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Endif
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Endif
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; Create the "patch" that the will be appended to the callee's module.
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If &AReg '' And &AReg = 'A7' Then
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&Name proc export ; export entrypoint
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move.l ([&TVec],&CVec),-(sp) ; push address of the "real" routine
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rts ; and jump to it
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EndProc
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Else
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&Name proc export ; export entrypoint
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move.l &TVec,&AReg ; move address of table into register
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move.l &CVec(&AReg),&AReg ; move address of "real" routine into register
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jmp (&AReg) ; and jump to it
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EndProc
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Endif
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EndMacro
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Include &VECTORTABLE ; do the real work
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End
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