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Annotation of frontvm/hardware/decode.h, revision 1.1

1.1     ! root        1: /*
        !             2:   Hatari - decode.h
        !             3: 
        !             4:   This file is distributed under the GNU Public License, version 2 or at
        !             5:   your option any later version. Read the file gpl.txt for details.
        !             6: */
        !             7: 
        !             8: #ifndef HATARI_DECODE_H
        !             9: #define HATARI_DECODE_H
        !            10: 
        !            11: #include "sysdeps.h"
        !            12: #include "maccess.h"
        !            13: #include "memory.h"
        !            14: #include "newcpu.h"
        !            15: 
        !            16: #define Regs regs.regs       /* Ouah - uggly hack - FIXME! */
        !            17: #define SR regs.sr           /* Don't forget to call MakeFromSR() and MakeSR() */
        !            18: /*#define PC regs.pc*/       /* PC should be read with m68k_getpc() */
        !            19: 
        !            20: 
        !            21: #define PENDING_INTERRUPT_FLAG_MFP      0x0001    /* 'PendingInterruptFlag' masks */
        !            22: #define PENDING_INTERRUPT_FLAG_TRACE    0x0002
        !            23: #define CLEAR_PENDING_INTERRUPT_FLAG_MFP   0xfffe
        !            24: #define CLEAR_PENDING_INTERRUPT_FLAG_TRACE 0xfffd
        !            25: 
        !            26: 
        !            27: extern  unsigned char STRam[MEMORY_SIZE];
        !            28: extern  short int PendingInterruptFlag;
        !            29: extern  void *PendingInterruptFunction;
        !            30: extern  short int PendingInterruptCount;
        !            31: extern  unsigned long STRamEnd;
        !            32: 
        !            33: 
        !            34: /*-----------------------------------------------------------------------*/
        !            35: /* Offset ST address to PC pointer: */
        !            36: #define STRAM_ADDR(Var)  ((unsigned long)STRam+((unsigned long)Var&0x00ffffff))
        !            37: 
        !            38: 
        !            39: /*-----------------------------------------------------------------------*/
        !            40: /* Set clock times for each instruction, see '68000 timing' pages for details */
        !            41: /* NOTE All times are rounded up to nearest 4 cycles */
        !            42: #define  ROUND_CYCLES_TO4(var)  (((int)(var)+3)&0xfffffffc)
        !            43: 
        !            44: static inline void ADD_CYCLES(op,r,w)
        !            45: {
        !            46:   PendingInterruptCount-= (op+3)&0xfffffffc;
        !            47: }
        !            48: 
        !            49: 
        !            50: #endif   /* HATARI_DECODE_H */

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