--- BasiliskII/src/uae_cpu/m68k.h 1999/10/28 16:00:26 1.3 +++ BasiliskII/src/uae_cpu/m68k.h 1999/10/28 16:52:32 1.4 @@ -145,167 +145,122 @@ static __inline__ int cctrue(int cc) #elif defined(__sparc__) && (defined(SPARC_V8_ASSEMBLY) || defined(SPARC_V9_ASSEMBLY)) struct flag_struct { - union { - unsigned short all; - unsigned char bytes[2]; - }; + unsigned char nzvc; + unsigned char x; }; -typedef unsigned short * flags_addr; -extern struct flag_struct regflags; -#define M68K_FLAGS_ADDR ((flags_addr)(®flags.all)) -#define M68K_FLAGS_NZVC regflags.bytes[1] -#define M68K_FLAGS_X regflags.bytes[0] +extern struct flag_struct regflags; -#if 0 - -#define SET_ZFLG(y) (M68K_FLAGS_NZVC = (M68K_FLAGS_NZVC & ~0x01) | ((y) & 1)) -#define SET_CFLG(y) (M68K_FLAGS_NZVC = (M68K_FLAGS_NZVC & ~0x02) | (((y) & 1) << 1)) -#define SET_XFLG(y) (M68K_FLAGS_X = ((y) & 1) << 1) -#define SET_VFLG(y) (M68K_FLAGS_NZVC = (M68K_FLAGS_NZVC & ~0x10) | (((y) & 1) << 4)) -#define SET_NFLG(y) (M68K_FLAGS_NZVC = (M68K_FLAGS_NZVC & ~0x80) | (((y) & 1) << 7)) - -#define GET_ZFLG (M68K_FLAGS_NZVC & 1) -#define GET_CFLG ((M68K_FLAGS_NZVC >> 1) & 1) -#define GET_XFLG ((M68K_FLAGS_X >> 1) & 1) -#define GET_VFLG ((M68K_FLAGS_NZVC >> 4) & 1) -#define GET_NFLG ((M68K_FLAGS_NZVC >> 7) & 1) - -#define CLEAR_CZNV (M68K_FLAGS_NZVC = 0) -#define COPY_CARRY (M68K_FLAGS_X = M68K_FLAGS_NZVC) - -#else - -#define M68K_FLAGS_ALL regflags.all - -#define SET_ZFLG(y) (M68K_FLAGS_ALL = (M68K_FLAGS_ALL & ~0x01) | ((y) & 1)) -#define SET_CFLG(y) (M68K_FLAGS_ALL = (M68K_FLAGS_ALL & ~0x02) | (((y) & 1) << 1)) -#define SET_XFLG(y) (M68K_FLAGS_ALL = (M68K_FLAGS_ALL & ~0x200)| (((y) & 1) << 9)) -#define SET_VFLG(y) (M68K_FLAGS_ALL = (M68K_FLAGS_ALL & ~0x10) | (((y) & 1) << 4)) -#define SET_NFLG(y) (M68K_FLAGS_ALL = (M68K_FLAGS_ALL & ~0x80) | (((y) & 1) << 7)) - -#define GET_ZFLG (M68K_FLAGS_ALL & 1) -#define GET_CFLG ((M68K_FLAGS_ALL >> 1) & 1) -#define GET_XFLG ((M68K_FLAGS_ALL >> 9) & 1) -#define GET_VFLG ((M68K_FLAGS_ALL >> 4) & 1) -#define GET_NFLG ((M68K_FLAGS_ALL >> 7) & 1) - -#define CLEAR_CZNV (M68K_FLAGS_NZVC = 0) -#define COPY_CARRY (M68K_FLAGS_X = M68K_FLAGS_NZVC) +#define SET_ZFLG(y) (regflags.nzvc = (regflags.nzvc & ~0x04) | (((y) & 1) << 2)) +#define SET_CFLG(y) (regflags.nzvc = (regflags.nzvc & ~1) | ((y) & 1)) +#define SET_VFLG(y) (regflags.nzvc = (regflags.nzvc & ~0x02) | (((y) & 1) << 1)) +#define SET_NFLG(y) (regflags.nzvc = (regflags.nzvc & ~0x08) | (((y) & 1) << 3)) +#define SET_XFLG(y) (regflags.x = (y)) + +#define GET_ZFLG ((regflags.nzvc >> 2) & 1) +#define GET_CFLG (regflags.nzvc & 1) +#define GET_VFLG ((regflags.nzvc >> 1) & 1) +#define GET_NFLG ((regflags.nzvc >> 3) & 1) +#define GET_XFLG (regflags.x & 1) -#endif +#define CLEAR_CZNV (regflags.nzvc = 0) +#define COPY_CARRY (regflags.x = regflags.nzvc) static __inline__ int cctrue(int cc) { - uae_u32 nzvc = M68K_FLAGS_NZVC; + uae_u32 nzvc = regflags.nzvc; switch(cc){ - case 0: return 1; /* T */ - case 1: return 0; /* F */ - case 2: return (nzvc & 0x03) == 0; /* !GET_CFLG && !GET_ZFLG; HI */ - case 3: return (nzvc & 0x03) != 0; /* GET_CFLG || GET_ZFLG; LS */ - case 4: return (nzvc & 0x02) == 0; /* !GET_CFLG; CC */ - case 5: return (nzvc & 0x02) != 0; /* GET_CFLG; CS */ - case 6: return (nzvc & 0x01) == 0; /* !GET_ZFLG; NE */ - case 7: return (nzvc & 0x01) != 0; /* GET_ZFLG; EQ */ - case 8: return (nzvc & 0x10) == 0; /* !GET_VFLG; VC */ - case 9: return (nzvc & 0x10) != 0; /* GET_VFLG; VS */ - case 10:return (nzvc & 0x80) == 0; /* !GET_NFLG; PL */ - case 11:return (nzvc & 0x80) != 0; /* GET_NFLG; MI */ - case 12:return (((nzvc << 3) ^ nzvc) & 0x80) == 0; /* GET_NFLG == GET_VFLG; GE */ - case 13:return (((nzvc << 3) ^ nzvc) & 0x80) != 0; /* GET_NFLG != GET_VFLG; LT */ + case 0: return 1; /* T */ + case 1: return 0; /* F */ + case 2: return (nzvc & 0x05) == 0; /* !GET_CFLG && !GET_ZFLG; HI */ + case 3: return (nzvc & 0x05) != 0; /* GET_CFLG || GET_ZFLG; LS */ + case 4: return (nzvc & 1) == 0; /* !GET_CFLG; CC */ + case 5: return (nzvc & 1) != 0; /* GET_CFLG; CS */ + case 6: return (nzvc & 0x04) == 0; /* !GET_ZFLG; NE */ + case 7: return (nzvc & 0x04) != 0; /* GET_ZFLG; EQ */ + case 8: return (nzvc & 0x02) == 0;/* !GET_VFLG; VC */ + case 9: return (nzvc & 0x02) != 0;/* GET_VFLG; VS */ + case 10:return (nzvc & 0x08) == 0; /* !GET_NFLG; PL */ + case 11:return (nzvc & 0x08) != 0; /* GET_NFLG; MI */ + case 12:return (((nzvc << 2) ^ nzvc) & 0x08) == 0; /* GET_NFLG == GET_VFLG; GE */ + case 13:return (((nzvc << 2) ^ nzvc) & 0x08) != 0;/* GET_NFLG != GET_VFLG; LT */ case 14: -/* N--V--CZ shifted by 3 leads to V--CZ--- */ - return (((nzvc << 3) ^ nzvc) & 0x88) == 0; /* !GET_ZFLG && (GET_NFLG == GET_VFLG); GT */ + nzvc &= 0x0e; + return (((nzvc << 2) ^ nzvc) & 0x0c) == 0; /* !GET_ZFLG && (GET_NFLG == GET_VFLG); GT */ case 15: - return (((nzvc << 3) ^ nzvc) & 0x88) != 0; /* GET_ZFLG || (GET_NFLG != GET_VFLG); LE */ + nzvc &= 0x0e; + return (((nzvc << 2) ^ nzvc) & 0x0c) != 0; /* GET_ZFLG || (GET_NFLG != GET_VFLG); LE */ } return 0; } #ifdef SPARC_V8_ASSEMBLY -static inline char *str_flags(void) -{ - static char str[8]; - sprintf(str, "%c%c%c%c%c", - GET_XFLG ? 'X' : '-', - GET_NFLG ? 'N' : '-', - GET_ZFLG ? 'Z' : '-', - GET_VFLG ? 'V' : '-', - GET_CFLG ? 'C' : '-' - ); - return str; -} - -static inline uae_u32 sparc_v8_flag_add_8(flags_addr pflags, uae_u32 src, uae_u32 dst) +static inline uae_u32 sparc_v8_flag_add_8(flag_struct *flags, uae_u32 src, uae_u32 dst) { uae_u32 value; __asm__ ("\n" " sll %2, 24, %%o0\n" " sll %3, 24, %%o1\n" " addcc %%o0, %%o1, %%o0\n" - " subx %%g0, %%g0, %%o1\n" - " srl %%o0, 24, %0 ! 8-bit result\n" - " and %%o1, 0x202, %%o1 ! X, C flags\n" - " and %0, 0x80, %%o0\n" - " or %%o1, %%o0, %%o1 ! N flag\n" - " subcc %%g0, %0, %%g0\n" - " subx %%o1, -1, %%o1 ! Z flag\n" + " addx %%g0, %%g0, %%o1 ! X,C flags\n" + " srl %%o0, 24, %0\n" + " stb %%o1, [%1 + 1]\n" + " bl,a .+8\n" + " or %%o1, 0x08, %%o1 ! N flag\n" + " bz,a .+8\n" + " or %%o1, 0x04, %%o1 ! Z flag\n" " bvs,a .+8\n" - " or %%o1, 0x10, %%o1 ! V flag\n" - " sth %%o1, [%1]\n" + " or %%o1, 0x02, %%o1 ! V flag\n" + " stb %%o1, [%1]\n" : "=&r" (value) - : "r" (pflags), "r" (dst), "r" (src), "0" (value) + : "r" (flags), "r" (dst), "r" (src) : "cc", "o0", "o1" ); - -// printf("%d + %d = %d (flags = %s)\n", dst, src, value, str_flags()); return value; } -static inline uae_u32 sparc_v8_flag_add_16(flags_addr pflags, uae_u32 src, uae_u32 dst) +static inline uae_u32 sparc_v8_flag_add_16(flag_struct *flags, uae_u32 src, uae_u32 dst) { uae_u32 value; __asm__ ("\n" " sll %2, 16, %%o0\n" " sll %3, 16, %%o1\n" " addcc %%o0, %%o1, %%o0\n" - " subx %%g0, %%g0, %%o1\n" - " srl %%o0, 16, %0 ! 16-bit result\n" - " and %%o1, 0x202, %%o1 ! X, C flags\n" - " sra %%o0, 24, %%o0\n" - " and %%o0, 0x80, %%o0\n" - " or %%o1, %%o0, %%o1 ! N flag\n" - " subcc %%g0, %0, %%g0\n" - " subx %%o1, -1, %%o1 ! Z flag\n" + " addx %%g0, %%g0, %%o1 ! X,C flags\n" + " srl %%o0, 16, %0\n" + " stb %%o1, [%1 + 1]\n" + " bl,a .+8\n" + " or %%o1, 0x08, %%o1 ! N flag\n" + " bz,a .+8\n" + " or %%o1, 0x04, %%o1 ! Z flag\n" " bvs,a .+8\n" - " or %%o1, 0x10, %%o1 ! V flag\n" - " sth %%o1, [%1]\n" + " or %%o1, 0x02, %%o1 ! V flag\n" + " stb %%o1, [%1]\n" : "=&r" (value) - : "r" (pflags), "r" (dst), "r" (src), "0" (value) + : "r" (flags), "r" (dst), "r" (src) : "cc", "o0", "o1" ); return value; } -static inline uae_u32 sparc_v8_flag_add_32(flags_addr pflags, uae_u32 src, uae_u32 dst) +static inline uae_u32 sparc_v8_flag_add_32(flag_struct *flags, uae_u32 src, uae_u32 dst) { uae_u32 value; __asm__ ("\n" " addcc %2, %3, %0\n" - " subx %%g0, %%g0, %%o0\n" - " sra %0, 24, %%o1\n" - " and %%o0, 0x202, %%o0 ! X, C flags\n" - " and %%o1, 0x80, %%o1\n" - " or %%o0, %%o1, %%o0 ! N flag\n" - " subcc %%g0, %0, %%g0\n" - " subx %%o0, -1, %%o0 ! Z flag\n" + " addx %%g0, %%g0, %%o0 ! X,C flags\n" + " stb %%o0, [%1 + 1]\n" + " bl,a .+8\n" + " or %%o0, 0x08, %%o0 ! N flag\n" + " bz,a .+8\n" + " or %%o0, 0x04, %%o0 ! Z flag\n" " bvs,a .+8\n" - " or %%o0, 0x10, %%o0 ! V flag\n" - " sth %%o0, [%1]\n" + " or %%o0, 0x02, %%o0 ! V flag\n" + " stb %%o0, [%1]\n" : "=&r" (value) - : "r" (pflags), "r" (dst), "r" (src), "0" (value) - : "cc", "o0", "o1" + : "r" (flags), "r" (dst), "r" (src) + : "cc", "o0" ); return value; } @@ -439,6 +394,85 @@ static inline void sparc_v8_flag_cmp_32( ); } +static inline uae_u32 sparc_v8_flag_addx_8(flag_struct *flags, uae_u32 src, uae_u32 dst) +{ + uae_u32 value; + __asm__ ("\n" + " ldub [%1 + 1], %%o1 ! Get the X Flag\n" + " subcc %%g0, %%o1, %%g0 ! Set the SPARC carry flag, if X set\n" + " addxcc %2, %3, %0\n" + : "=&r" (value) + : "r" (flags), "r" (dst), "r" (src) + : "cc", "o0", "o1" + ); + return value; +} + +#if 0 +VERY SLOW... +static inline uae_u32 sparc_v8_flag_addx_8(flag_struct *flags, uae_u32 src, uae_u32 dst) +{ + uae_u32 value; + __asm__ ("\n" + " sll %2, 24, %%o0\n" + " sll %3, 24, %%o1\n" + " addcc %%o0, %%o1, %%o0\n" + " addx %%g0, %%g0, %%o1 ! X,C flags\n" + " bvs,a .+8\n" + " or %%o1, 0x02, %%o1 ! V flag\n" + " ldub [%1 + 1], %%o2\n" + " subcc %%g0, %%o2, %%g0\n" + " addx %%g0, %%g0, %%o2\n" + " sll %%o2, 24, %%o2\n" + " addcc %%o0, %%o2, %%o0\n" + " srl %%o0, 24, %0\n" + " addx %%g0, %%g0, %%o2\n" + " or %%o1, %%o2, %%o1 ! update X,C flags\n" + " bl,a .+8\n" + " or %%o1, 0x08, %%o1 ! N flag\n" + " ldub [%1], %%o0 ! retreive the old NZVC flags (XXX)\n" + " bvs,a .+8\n" + " or %%o1, 0x02, %%o1 ! update V flag\n" + " and %%o0, 0x04, %%o0 ! (XXX) but keep only Z flag\n" + " and %%o1, 1, %%o2 ! keep C flag in %%o2\n" + " bnz,a .+8\n" + " or %%g0, %%g0, %%o0 ! Z flag cleared if non-zero result\n" + " stb %%o2, [%1 + 1] ! store the X flag\n" + " or %%o1, %%o0, %%o1\n" + " stb %%o1, [%1]\n" + : "=&r" (value) + : "r" (flags), "r" (dst), "r" (src) + : "cc", "o0", "o1", "o2" + ); + return value; +} +#endif + +static inline uae_u32 sparc_v8_flag_addx_32(flag_struct *flags, uae_u32 src, uae_u32 dst) +{ + uae_u32 value; + __asm__ ("\n" + " ldub [%1 + 1], %%o0 ! Get the X Flag\n" + " subcc %%g0, %%o0, %%g0 ! Set the SPARC carry flag, if X set\n" + " addxcc %2, %3, %0\n" + " ldub [%1], %%o0 ! retreive the old NZVC flags\n" + " and %%o0, 0x04, %%o0 ! but keep only Z flag\n" + " addx %%o0, %%g0, %%o0 ! X,C flags\n" + " bl,a .+8\n" + " or %%o0, 0x08, %%o0 ! N flag\n" + " bvs,a .+8\n" + " or %%o0, 0x02, %%o0 ! V flag\n" + " bnz,a .+8\n" + " and %%o0, 0x0B, %%o0 ! Z flag cleared if result is non-zero\n" + " stb %%o0, [%1]\n" + " stb %%o0, [%1 + 1]\n" + : "=&r" (value) + : "r" (flags), "r" (dst), "r" (src) + : "cc", "o0" + ); + return value; +} + #endif /* SPARC_V8_ASSEMBLY */ #ifdef SPARC_V9_ASSEMBLY