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/*
* UAE - The Un*x Amiga Emulator
*
* MC68000 emulation - machine dependent bits
*
* Copyright 1996 Bernd Schmidt
*/
#ifdef __cplusplus
extern "C" {
#endif
struct flag_struct {
unsigned int c;
unsigned int z;
unsigned int n;
unsigned int v;
unsigned int x;
};
extern struct flag_struct regflags;
#define ZFLG (regflags.z)
#define NFLG (regflags.n)
#define CFLG (regflags.c)
#define VFLG (regflags.v)
#define XFLG (regflags.x)
STATIC_INLINE int cctrue(const int cc)
{
switch(cc){
case 0: return 1; /* T */
case 1: return 0; /* F */
case 2: return !CFLG && !ZFLG; /* HI */
case 3: return CFLG || ZFLG; /* LS */
case 4: return !CFLG; /* CC */
case 5: return CFLG; /* CS */
case 6: return !ZFLG; /* NE */
case 7: return ZFLG; /* EQ */
case 8: return !VFLG; /* VC */
case 9: return VFLG; /* VS */
case 10:return !NFLG; /* PL */
case 11:return NFLG; /* MI */
case 12:return NFLG == VFLG; /* GE */
case 13:return NFLG != VFLG; /* LT */
case 14:return !ZFLG && (NFLG == VFLG); /* GT */
case 15:return ZFLG || (NFLG != VFLG); /* LE */
}
abort();
return 0;
}
#ifdef __cplusplus
}
#endif
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