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66 lines
1.2 KiB
C
66 lines
1.2 KiB
C
/*
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File: M68K.h
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Contains: M680x0 macros and inline functions
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Written by: Craig Prouse
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Copyright: © 1993 by Apple Computer, Inc., all rights reserved.
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Change History (most recent first):
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<1> 11/10/93 fau first checked in
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<SMG2> 10/26/93 chp Added an inline NOP function. This corresponds to a PowerPC
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EIEIO under 68K emulation.
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<1> 8/30/93 chp first checked in
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*/
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#ifndef __M68K__
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#define __M68K__
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#ifdef m68k
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// WARNING: Items defined in this file are not portable. Inclusion of this file has no
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// effect unless compiling with the MPW 68K C compiler, which predefines the m68k flag.
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typedef unsigned short StatusRegister;
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typedef void *AddressRegister;
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#pragma parameter __D0 GetA0
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AddressRegister GetA0 (void) =
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{
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0x2008 // MOVE.L A0,D0
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};
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#pragma parameter __D0 GetA1
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AddressRegister GetA1 (void) =
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{
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0x2009 // MOVE.L A1,D0
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};
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#pragma parameter __D0 DisableInterrupts
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StatusRegister DisableInterrupts (void) =
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{
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0x40C0, // MOVE SR,D0
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0x007C, 0x0700 // ORI #$0700,SR
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};
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#pragma parameter RestoreStatusRegister (__D0)
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void RestoreStatusRegister (StatusRegister) =
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{
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0x46C0 // MOVE D0,SR
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};
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void NOP (void) =
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{
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0x4E71 // NOP
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};
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#endif m68k
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#endif __M68K__
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