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Annotation of frontvm/hardware/decode.h, revision 1.1.1.1

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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