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cebix |
1.1 |
/* |
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* UAE - The Un*x Amiga Emulator |
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* |
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* MC68000 emulation - machine dependent bits |
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* |
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* Copyright 1996 Bernd Schmidt |
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*/ |
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cebix |
1.2 |
#if defined(__i386__) && defined(X86_ASSEMBLY) |
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cebix |
1.1 |
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struct flag_struct { |
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unsigned int cznv; |
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unsigned int x; |
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}; |
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#define SET_ZFLG(y) (regflags.cznv = (regflags.cznv & ~0x40) | (((y) & 1) << 6)) |
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#define SET_CFLG(y) (regflags.cznv = (regflags.cznv & ~1) | ((y) & 1)) |
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#define SET_VFLG(y) (regflags.cznv = (regflags.cznv & ~0x800) | (((y) & 1) << 11)) |
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#define SET_NFLG(y) (regflags.cznv = (regflags.cznv & ~0x80) | (((y) & 1) << 7)) |
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#define SET_XFLG(y) (regflags.x = (y)) |
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#define GET_ZFLG ((regflags.cznv >> 6) & 1) |
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#define GET_CFLG (regflags.cznv & 1) |
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#define GET_VFLG ((regflags.cznv >> 11) & 1) |
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#define GET_NFLG ((regflags.cznv >> 7) & 1) |
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#define GET_XFLG (regflags.x & 1) |
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#define CLEAR_CZNV (regflags.cznv = 0) |
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#define COPY_CARRY (regflags.x = regflags.cznv) |
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extern struct flag_struct regflags __asm__ ("regflags"); |
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static __inline__ int cctrue(int cc) |
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{ |
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uae_u32 cznv = regflags.cznv; |
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switch(cc){ |
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case 0: return 1; /* T */ |
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case 1: return 0; /* F */ |
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case 2: return (cznv & 0x41) == 0; /* !GET_CFLG && !GET_ZFLG; HI */ |
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case 3: return (cznv & 0x41) != 0; /* GET_CFLG || GET_ZFLG; LS */ |
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case 4: return (cznv & 1) == 0; /* !GET_CFLG; CC */ |
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case 5: return (cznv & 1) != 0; /* GET_CFLG; CS */ |
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case 6: return (cznv & 0x40) == 0; /* !GET_ZFLG; NE */ |
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case 7: return (cznv & 0x40) != 0; /* GET_ZFLG; EQ */ |
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case 8: return (cznv & 0x800) == 0;/* !GET_VFLG; VC */ |
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case 9: return (cznv & 0x800) != 0;/* GET_VFLG; VS */ |
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case 10:return (cznv & 0x80) == 0; /* !GET_NFLG; PL */ |
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case 11:return (cznv & 0x80) != 0; /* GET_NFLG; MI */ |
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case 12:return (((cznv << 4) ^ cznv) & 0x800) == 0; /* GET_NFLG == GET_VFLG; GE */ |
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case 13:return (((cznv << 4) ^ cznv) & 0x800) != 0;/* GET_NFLG != GET_VFLG; LT */ |
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case 14: |
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cznv &= 0x8c0; |
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return (((cznv << 4) ^ cznv) & 0x840) == 0; /* !GET_ZFLG && (GET_NFLG == GET_VFLG); GT */ |
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case 15: |
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cznv &= 0x8c0; |
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return (((cznv << 4) ^ cznv) & 0x840) != 0; /* GET_ZFLG || (GET_NFLG != GET_VFLG); LE */ |
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} |
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return 0; |
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} |
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#define x86_flag_testl(v) \ |
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__asm__ __volatile__ ("testl %1,%1\n\t" \ |
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"pushfl\n\t" \ |
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"popl %0\n\t" \ |
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: "=r" (regflags.cznv) : "r" (v) : "cc") |
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#define x86_flag_testw(v) \ |
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__asm__ __volatile__ ("testw %w1,%w1\n\t" \ |
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"pushfl\n\t" \ |
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"popl %0\n\t" \ |
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: "=r" (regflags.cznv) : "r" (v) : "cc") |
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#define x86_flag_testb(v) \ |
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__asm__ __volatile__ ("testb %b1,%b1\n\t" \ |
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"pushfl\n\t" \ |
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"popl %0\n\t" \ |
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: "=r" (regflags.cznv) : "q" (v) : "cc") |
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#define x86_flag_addl(v, s, d) do { \ |
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__asm__ __volatile__ ("addl %k2,%k1\n\t" \ |
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"pushfl\n\t" \ |
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"popl %0\n\t" \ |
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: "=r" (regflags.cznv), "=r" (v) : "rmi" (s), "1" (d) : "cc"); \ |
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COPY_CARRY; \ |
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} while (0) |
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#define x86_flag_addw(v, s, d) do { \ |
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__asm__ __volatile__ ("addw %w2,%w1\n\t" \ |
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"pushfl\n\t" \ |
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"popl %0\n\t" \ |
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: "=r" (regflags.cznv), "=r" (v) : "rmi" (s), "1" (d) : "cc"); \ |
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COPY_CARRY; \ |
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} while (0) |
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#define x86_flag_addb(v, s, d) do { \ |
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__asm__ __volatile__ ("addb %b2,%b1\n\t" \ |
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"pushfl\n\t" \ |
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"popl %0\n\t" \ |
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: "=r" (regflags.cznv), "=q" (v) : "qmi" (s), "1" (d) : "cc"); \ |
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COPY_CARRY; \ |
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} while (0) |
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#define x86_flag_subl(v, s, d) do { \ |
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__asm__ __volatile__ ("subl %k2,%k1\n\t" \ |
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"pushfl\n\t" \ |
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"popl %0\n\t" \ |
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: "=r" (regflags.cznv), "=r" (v) : "rmi" (s), "1" (d) : "cc"); \ |
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COPY_CARRY; \ |
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} while (0) |
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#define x86_flag_subw(v, s, d) do { \ |
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__asm__ __volatile__ ("subw %w2,%w1\n\t" \ |
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"pushfl\n\t" \ |
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"popl %0\n\t" \ |
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: "=r" (regflags.cznv), "=r" (v) : "rmi" (s), "1" (d) : "cc"); \ |
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COPY_CARRY; \ |
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} while (0) |
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#define x86_flag_subb(v, s, d) do { \ |
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__asm__ __volatile__ ("subb %b2,%b1\n\t" \ |
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"pushfl\n\t" \ |
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"popl %0\n\t" \ |
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: "=r" (regflags.cznv), "=q" (v) : "qmi" (s), "1" (d) : "cc"); \ |
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COPY_CARRY; \ |
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} while (0) |
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#define x86_flag_cmpl(s, d) \ |
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__asm__ __volatile__ ("cmpl %k1,%k2\n\t" \ |
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"pushfl\n\t" \ |
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"popl %0\n\t" \ |
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: "=r" (regflags.cznv) : "rmi" (s), "r" (d) : "cc") |
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#define x86_flag_cmpw(s, d) \ |
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__asm__ __volatile__ ("cmpw %w1,%w2\n\t" \ |
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"pushfl\n\t" \ |
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"popl %0\n\t" \ |
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: "=r" (regflags.cznv) : "rmi" (s), "r" (d) : "cc") |
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#define x86_flag_cmpb(s, d) \ |
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__asm__ __volatile__ ("cmpb %b1,%b2\n\t" \ |
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"pushfl\n\t" \ |
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"popl %0\n\t" \ |
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: "=r" (regflags.cznv) : "qmi" (s), "q" (d) : "cc") |
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cebix |
1.2 |
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#elif defined(__sparc__) && (defined(SPARC_V8_ASSEMBLY) || defined(SPARC_V9_ASSEMBLY)) |
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struct flag_struct { |
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cebix |
1.3 |
union { |
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unsigned short all; |
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unsigned char bytes[2]; |
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}; |
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cebix |
1.2 |
}; |
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cebix |
1.3 |
typedef unsigned short * flags_addr; |
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extern struct flag_struct regflags; |
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#define M68K_FLAGS_ADDR ((flags_addr)(®flags.all)) |
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#define M68K_FLAGS_NZVC regflags.bytes[1] |
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#define M68K_FLAGS_X regflags.bytes[0] |
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cebix |
1.2 |
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cebix |
1.3 |
#if 0 |
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#define SET_ZFLG(y) (M68K_FLAGS_NZVC = (M68K_FLAGS_NZVC & ~0x01) | ((y) & 1)) |
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#define SET_CFLG(y) (M68K_FLAGS_NZVC = (M68K_FLAGS_NZVC & ~0x02) | (((y) & 1) << 1)) |
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#define SET_XFLG(y) (M68K_FLAGS_X = ((y) & 1) << 1) |
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#define SET_VFLG(y) (M68K_FLAGS_NZVC = (M68K_FLAGS_NZVC & ~0x10) | (((y) & 1) << 4)) |
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#define SET_NFLG(y) (M68K_FLAGS_NZVC = (M68K_FLAGS_NZVC & ~0x80) | (((y) & 1) << 7)) |
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#define GET_ZFLG (M68K_FLAGS_NZVC & 1) |
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#define GET_CFLG ((M68K_FLAGS_NZVC >> 1) & 1) |
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#define GET_XFLG ((M68K_FLAGS_X >> 1) & 1) |
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#define GET_VFLG ((M68K_FLAGS_NZVC >> 4) & 1) |
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#define GET_NFLG ((M68K_FLAGS_NZVC >> 7) & 1) |
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| 174 |
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#define CLEAR_CZNV (M68K_FLAGS_NZVC = 0) |
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#define COPY_CARRY (M68K_FLAGS_X = M68K_FLAGS_NZVC) |
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#else |
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| 179 |
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#define M68K_FLAGS_ALL regflags.all |
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| 181 |
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#define SET_ZFLG(y) (M68K_FLAGS_ALL = (M68K_FLAGS_ALL & ~0x01) | ((y) & 1)) |
| 182 |
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#define SET_CFLG(y) (M68K_FLAGS_ALL = (M68K_FLAGS_ALL & ~0x02) | (((y) & 1) << 1)) |
| 183 |
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#define SET_XFLG(y) (M68K_FLAGS_ALL = (M68K_FLAGS_ALL & ~0x200)| (((y) & 1) << 9)) |
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#define SET_VFLG(y) (M68K_FLAGS_ALL = (M68K_FLAGS_ALL & ~0x10) | (((y) & 1) << 4)) |
| 185 |
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#define SET_NFLG(y) (M68K_FLAGS_ALL = (M68K_FLAGS_ALL & ~0x80) | (((y) & 1) << 7)) |
| 186 |
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| 187 |
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#define GET_ZFLG (M68K_FLAGS_ALL & 1) |
| 188 |
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#define GET_CFLG ((M68K_FLAGS_ALL >> 1) & 1) |
| 189 |
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#define GET_XFLG ((M68K_FLAGS_ALL >> 9) & 1) |
| 190 |
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#define GET_VFLG ((M68K_FLAGS_ALL >> 4) & 1) |
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#define GET_NFLG ((M68K_FLAGS_ALL >> 7) & 1) |
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| 193 |
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#define CLEAR_CZNV (M68K_FLAGS_NZVC = 0) |
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#define COPY_CARRY (M68K_FLAGS_X = M68K_FLAGS_NZVC) |
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cebix |
1.2 |
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| 196 |
cebix |
1.3 |
#endif |
| 197 |
cebix |
1.2 |
|
| 198 |
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static __inline__ int cctrue(int cc) |
| 199 |
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{ |
| 200 |
cebix |
1.3 |
uae_u32 nzvc = M68K_FLAGS_NZVC; |
| 201 |
cebix |
1.2 |
switch(cc){ |
| 202 |
cebix |
1.3 |
case 0: return 1; /* T */ |
| 203 |
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case 1: return 0; /* F */ |
| 204 |
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case 2: return (nzvc & 0x03) == 0; /* !GET_CFLG && !GET_ZFLG; HI */ |
| 205 |
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case 3: return (nzvc & 0x03) != 0; /* GET_CFLG || GET_ZFLG; LS */ |
| 206 |
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case 4: return (nzvc & 0x02) == 0; /* !GET_CFLG; CC */ |
| 207 |
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case 5: return (nzvc & 0x02) != 0; /* GET_CFLG; CS */ |
| 208 |
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case 6: return (nzvc & 0x01) == 0; /* !GET_ZFLG; NE */ |
| 209 |
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case 7: return (nzvc & 0x01) != 0; /* GET_ZFLG; EQ */ |
| 210 |
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case 8: return (nzvc & 0x10) == 0; /* !GET_VFLG; VC */ |
| 211 |
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case 9: return (nzvc & 0x10) != 0; /* GET_VFLG; VS */ |
| 212 |
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case 10:return (nzvc & 0x80) == 0; /* !GET_NFLG; PL */ |
| 213 |
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case 11:return (nzvc & 0x80) != 0; /* GET_NFLG; MI */ |
| 214 |
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case 12:return (((nzvc << 3) ^ nzvc) & 0x80) == 0; /* GET_NFLG == GET_VFLG; GE */ |
| 215 |
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case 13:return (((nzvc << 3) ^ nzvc) & 0x80) != 0; /* GET_NFLG != GET_VFLG; LT */ |
| 216 |
cebix |
1.2 |
case 14: |
| 217 |
cebix |
1.3 |
/* N--V--CZ shifted by 3 leads to V--CZ--- */ |
| 218 |
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return (((nzvc << 3) ^ nzvc) & 0x88) == 0; /* !GET_ZFLG && (GET_NFLG == GET_VFLG); GT */ |
| 219 |
cebix |
1.2 |
case 15: |
| 220 |
cebix |
1.3 |
return (((nzvc << 3) ^ nzvc) & 0x88) != 0; /* GET_ZFLG || (GET_NFLG != GET_VFLG); LE */ |
| 221 |
cebix |
1.2 |
} |
| 222 |
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return 0; |
| 223 |
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} |
| 224 |
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| 225 |
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#ifdef SPARC_V8_ASSEMBLY |
| 226 |
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| 227 |
cebix |
1.3 |
static inline char *str_flags(void) |
| 228 |
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{ |
| 229 |
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static char str[8]; |
| 230 |
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sprintf(str, "%c%c%c%c%c", |
| 231 |
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GET_XFLG ? 'X' : '-', |
| 232 |
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GET_NFLG ? 'N' : '-', |
| 233 |
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GET_ZFLG ? 'Z' : '-', |
| 234 |
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GET_VFLG ? 'V' : '-', |
| 235 |
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GET_CFLG ? 'C' : '-' |
| 236 |
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); |
| 237 |
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return str; |
| 238 |
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} |
| 239 |
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| 240 |
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static inline uae_u32 sparc_v8_flag_add_8(flags_addr pflags, uae_u32 src, uae_u32 dst) |
| 241 |
cebix |
1.2 |
{ |
| 242 |
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uae_u32 value; |
| 243 |
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__asm__ ("\n" |
| 244 |
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" sll %2, 24, %%o0\n" |
| 245 |
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" sll %3, 24, %%o1\n" |
| 246 |
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" addcc %%o0, %%o1, %%o0\n" |
| 247 |
cebix |
1.3 |
" subx %%g0, %%g0, %%o1\n" |
| 248 |
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" srl %%o0, 24, %0 ! 8-bit result\n" |
| 249 |
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" and %%o1, 0x202, %%o1 ! X, C flags\n" |
| 250 |
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" and %0, 0x80, %%o0\n" |
| 251 |
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" or %%o1, %%o0, %%o1 ! N flag\n" |
| 252 |
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" subcc %%g0, %0, %%g0\n" |
| 253 |
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" subx %%o1, -1, %%o1 ! Z flag\n" |
| 254 |
cebix |
1.2 |
" bvs,a .+8\n" |
| 255 |
cebix |
1.3 |
" or %%o1, 0x10, %%o1 ! V flag\n" |
| 256 |
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" sth %%o1, [%1]\n" |
| 257 |
cebix |
1.2 |
: "=&r" (value) |
| 258 |
cebix |
1.3 |
: "r" (pflags), "r" (dst), "r" (src), "0" (value) |
| 259 |
cebix |
1.2 |
: "cc", "o0", "o1" |
| 260 |
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); |
| 261 |
cebix |
1.3 |
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| 262 |
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// printf("%d + %d = %d (flags = %s)\n", dst, src, value, str_flags()); |
| 263 |
cebix |
1.2 |
return value; |
| 264 |
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} |
| 265 |
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| 266 |
cebix |
1.3 |
static inline uae_u32 sparc_v8_flag_add_16(flags_addr pflags, uae_u32 src, uae_u32 dst) |
| 267 |
cebix |
1.2 |
{ |
| 268 |
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uae_u32 value; |
| 269 |
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__asm__ ("\n" |
| 270 |
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" sll %2, 16, %%o0\n" |
| 271 |
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" sll %3, 16, %%o1\n" |
| 272 |
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" addcc %%o0, %%o1, %%o0\n" |
| 273 |
cebix |
1.3 |
" subx %%g0, %%g0, %%o1\n" |
| 274 |
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" srl %%o0, 16, %0 ! 16-bit result\n" |
| 275 |
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" and %%o1, 0x202, %%o1 ! X, C flags\n" |
| 276 |
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" sra %%o0, 24, %%o0\n" |
| 277 |
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" and %%o0, 0x80, %%o0\n" |
| 278 |
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" or %%o1, %%o0, %%o1 ! N flag\n" |
| 279 |
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" subcc %%g0, %0, %%g0\n" |
| 280 |
|
|
" subx %%o1, -1, %%o1 ! Z flag\n" |
| 281 |
cebix |
1.2 |
" bvs,a .+8\n" |
| 282 |
cebix |
1.3 |
" or %%o1, 0x10, %%o1 ! V flag\n" |
| 283 |
|
|
" sth %%o1, [%1]\n" |
| 284 |
cebix |
1.2 |
: "=&r" (value) |
| 285 |
cebix |
1.3 |
: "r" (pflags), "r" (dst), "r" (src), "0" (value) |
| 286 |
cebix |
1.2 |
: "cc", "o0", "o1" |
| 287 |
|
|
); |
| 288 |
|
|
return value; |
| 289 |
|
|
} |
| 290 |
|
|
|
| 291 |
cebix |
1.3 |
static inline uae_u32 sparc_v8_flag_add_32(flags_addr pflags, uae_u32 src, uae_u32 dst) |
| 292 |
cebix |
1.2 |
{ |
| 293 |
|
|
uae_u32 value; |
| 294 |
|
|
__asm__ ("\n" |
| 295 |
|
|
" addcc %2, %3, %0\n" |
| 296 |
cebix |
1.3 |
" subx %%g0, %%g0, %%o0\n" |
| 297 |
|
|
" sra %0, 24, %%o1\n" |
| 298 |
|
|
" and %%o0, 0x202, %%o0 ! X, C flags\n" |
| 299 |
|
|
" and %%o1, 0x80, %%o1\n" |
| 300 |
|
|
" or %%o0, %%o1, %%o0 ! N flag\n" |
| 301 |
|
|
" subcc %%g0, %0, %%g0\n" |
| 302 |
|
|
" subx %%o0, -1, %%o0 ! Z flag\n" |
| 303 |
cebix |
1.2 |
" bvs,a .+8\n" |
| 304 |
cebix |
1.3 |
" or %%o0, 0x10, %%o0 ! V flag\n" |
| 305 |
|
|
" sth %%o0, [%1]\n" |
| 306 |
cebix |
1.2 |
: "=&r" (value) |
| 307 |
cebix |
1.3 |
: "r" (pflags), "r" (dst), "r" (src), "0" (value) |
| 308 |
|
|
: "cc", "o0", "o1" |
| 309 |
cebix |
1.2 |
); |
| 310 |
|
|
return value; |
| 311 |
|
|
} |
| 312 |
|
|
|
| 313 |
|
|
static inline uae_u32 sparc_v8_flag_sub_8(flag_struct *flags, uae_u32 src, uae_u32 dst) |
| 314 |
|
|
{ |
| 315 |
|
|
uae_u32 value; |
| 316 |
|
|
__asm__ ("\n" |
| 317 |
|
|
" sll %2, 24, %%o0\n" |
| 318 |
|
|
" sll %3, 24, %%o1\n" |
| 319 |
|
|
" subcc %%o0, %%o1, %%o0\n" |
| 320 |
|
|
" addx %%g0, %%g0, %%o1 ! X,C flags\n" |
| 321 |
|
|
" srl %%o0, 24, %0\n" |
| 322 |
|
|
" stb %%o1, [%1 + 1]\n" |
| 323 |
|
|
" bl,a .+8\n" |
| 324 |
|
|
" or %%o1, 0x08, %%o1 ! N flag\n" |
| 325 |
|
|
" bz,a .+8\n" |
| 326 |
|
|
" or %%o1, 0x04, %%o1 ! Z flag\n" |
| 327 |
|
|
" bvs,a .+8\n" |
| 328 |
|
|
" or %%o1, 0x02, %%o1 ! V flag\n" |
| 329 |
|
|
" stb %%o1, [%1]\n" |
| 330 |
|
|
: "=&r" (value) |
| 331 |
|
|
: "r" (flags), "r" (dst), "r" (src) |
| 332 |
|
|
: "cc", "o0", "o1" |
| 333 |
|
|
); |
| 334 |
|
|
return value; |
| 335 |
|
|
} |
| 336 |
|
|
|
| 337 |
|
|
static inline uae_u32 sparc_v8_flag_sub_16(flag_struct *flags, uae_u32 src, uae_u32 dst) |
| 338 |
|
|
{ |
| 339 |
|
|
uae_u32 value; |
| 340 |
|
|
__asm__ ("\n" |
| 341 |
|
|
" sll %2, 16, %%o0\n" |
| 342 |
|
|
" sll %3, 16, %%o1\n" |
| 343 |
|
|
" subcc %%o0, %%o1, %%o0\n" |
| 344 |
|
|
" addx %%g0, %%g0, %%o1 ! X,C flags\n" |
| 345 |
|
|
" srl %%o0, 16, %0\n" |
| 346 |
|
|
" stb %%o1, [%1 + 1]\n" |
| 347 |
|
|
" bl,a .+8\n" |
| 348 |
|
|
" or %%o1, 0x08, %%o1 ! N flag\n" |
| 349 |
|
|
" bz,a .+8\n" |
| 350 |
|
|
" or %%o1, 0x04, %%o1 ! Z flag\n" |
| 351 |
|
|
" bvs,a .+8\n" |
| 352 |
|
|
" or %%o1, 0x02, %%o1 ! V flag\n" |
| 353 |
|
|
" stb %%o1, [%1]\n" |
| 354 |
|
|
: "=&r" (value) |
| 355 |
|
|
: "r" (flags), "r" (dst), "r" (src) |
| 356 |
|
|
: "cc", "o0", "o1" |
| 357 |
|
|
); |
| 358 |
|
|
return value; |
| 359 |
|
|
} |
| 360 |
|
|
|
| 361 |
|
|
static inline uae_u32 sparc_v8_flag_sub_32(flag_struct *flags, uae_u32 src, uae_u32 dst) |
| 362 |
|
|
{ |
| 363 |
|
|
uae_u32 value; |
| 364 |
|
|
__asm__ ("\n" |
| 365 |
|
|
" subcc %2, %3, %0\n" |
| 366 |
|
|
" addx %%g0, %%g0, %%o0 ! X,C flags\n" |
| 367 |
|
|
" stb %%o0, [%1 + 1]\n" |
| 368 |
|
|
" bl,a .+8\n" |
| 369 |
|
|
" or %%o0, 0x08, %%o0 ! N flag\n" |
| 370 |
|
|
" bz,a .+8\n" |
| 371 |
|
|
" or %%o0, 0x04, %%o0 ! Z flag\n" |
| 372 |
|
|
" bvs,a .+8\n" |
| 373 |
|
|
" or %%o0, 0x02, %%o0 ! V flag\n" |
| 374 |
|
|
" stb %%o0, [%1]\n" |
| 375 |
|
|
: "=&r" (value) |
| 376 |
|
|
: "r" (flags), "r" (dst), "r" (src) |
| 377 |
|
|
: "cc", "o0" |
| 378 |
|
|
); |
| 379 |
|
|
return value; |
| 380 |
|
|
} |
| 381 |
|
|
|
| 382 |
|
|
static inline void sparc_v8_flag_cmp_8(flag_struct *flags, uae_u32 src, uae_u32 dst) |
| 383 |
|
|
{ |
| 384 |
|
|
__asm__ ("\n" |
| 385 |
|
|
" sll %1, 24, %%o0\n" |
| 386 |
|
|
" sll %2, 24, %%o1\n" |
| 387 |
|
|
" subcc %%o0, %%o1, %%g0\n" |
| 388 |
|
|
" addx %%g0, %%g0, %%o0 ! C flag\n" |
| 389 |
|
|
" bl,a .+8\n" |
| 390 |
|
|
" or %%o0, 0x08, %%o0 ! N flag\n" |
| 391 |
|
|
" bz,a .+8\n" |
| 392 |
|
|
" or %%o0, 0x04, %%o0 ! Z flag\n" |
| 393 |
|
|
" bvs,a .+8\n" |
| 394 |
|
|
" or %%o0, 0x02, %%o0 ! V flag\n" |
| 395 |
|
|
" stb %%o0, [%0]\n" |
| 396 |
|
|
: /* no outputs */ |
| 397 |
|
|
: "r" (flags), "r" (dst), "r" (src) |
| 398 |
|
|
: "cc", "o0", "o1" |
| 399 |
|
|
); |
| 400 |
|
|
} |
| 401 |
|
|
|
| 402 |
|
|
static inline void sparc_v8_flag_cmp_16(flag_struct *flags, uae_u32 src, uae_u32 dst) |
| 403 |
|
|
{ |
| 404 |
|
|
__asm__ ("\n" |
| 405 |
|
|
" sll %1, 16, %%o0\n" |
| 406 |
|
|
" sll %2, 16, %%o1\n" |
| 407 |
|
|
" subcc %%o0, %%o1, %%g0\n" |
| 408 |
|
|
" addx %%g0, %%g0, %%o0 ! C flag\n" |
| 409 |
|
|
" bl,a .+8\n" |
| 410 |
|
|
" or %%o0, 0x08, %%o0 ! N flag\n" |
| 411 |
|
|
" bz,a .+8\n" |
| 412 |
|
|
" or %%o0, 0x04, %%o0 ! Z flag\n" |
| 413 |
|
|
" bvs,a .+8\n" |
| 414 |
|
|
" or %%o0, 0x02, %%o0 ! V flag\n" |
| 415 |
|
|
" stb %%o0, [%0]\n" |
| 416 |
|
|
: /* no outputs */ |
| 417 |
|
|
: "r" (flags), "r" (dst), "r" (src) |
| 418 |
|
|
: "cc", "o0", "o1" |
| 419 |
|
|
); |
| 420 |
|
|
} |
| 421 |
|
|
|
| 422 |
|
|
static inline void sparc_v8_flag_cmp_32(flag_struct *flags, uae_u32 src, uae_u32 dst) |
| 423 |
|
|
{ |
| 424 |
|
|
__asm__ ("\n" |
| 425 |
|
|
" subcc %1, %2, %%o1\n" |
| 426 |
|
|
" srl %%o1, 31, %%o0\n" |
| 427 |
|
|
" sll %%o0, 3, %%o0\n" |
| 428 |
|
|
" addx %%o0, %%g0, %%o0\n" |
| 429 |
|
|
" bvs,a .+8\n" |
| 430 |
|
|
" or %%o0, 0x02, %%o0\n" |
| 431 |
|
|
" subcc %%g0, %%o1, %%g0\n" |
| 432 |
|
|
" addx %%g0, 7, %%o1\n" |
| 433 |
|
|
" and %%o1, 0x04, %%o1\n" |
| 434 |
|
|
" or %%o0, %%o1, %%o0\n" |
| 435 |
|
|
" stb %%o0, [%0]\n" |
| 436 |
|
|
: /* no outputs */ |
| 437 |
|
|
: "r" (flags), "r" (dst), "r" (src) |
| 438 |
|
|
: "cc", "o0", "o1" |
| 439 |
|
|
); |
| 440 |
|
|
} |
| 441 |
|
|
|
| 442 |
|
|
#endif /* SPARC_V8_ASSEMBLY */ |
| 443 |
|
|
|
| 444 |
|
|
#ifdef SPARC_V9_ASSEMBLY |
| 445 |
|
|
|
| 446 |
|
|
static inline uae_u32 sparc_v9_flag_add_8(flag_struct *flags, uae_u32 src, uae_u32 dst) |
| 447 |
|
|
{ |
| 448 |
|
|
uae_u32 value; |
| 449 |
|
|
__asm__ ("\n" |
| 450 |
|
|
" sll %2, 24, %%o0\n" |
| 451 |
|
|
" sll %3, 24, %%o1\n" |
| 452 |
|
|
" addcc %%o0, %%o1, %%o0\n" |
| 453 |
|
|
" rd %%ccr, %%o1\n" |
| 454 |
|
|
" srl %%o0, 24, %0\n" |
| 455 |
|
|
" stb %%o1, [%1]\n" |
| 456 |
|
|
" stb %%o1, [%1+1]\n" |
| 457 |
|
|
: "=&r" (value) |
| 458 |
|
|
: "r" (flags), "r" (dst), "r" (src) |
| 459 |
|
|
: "cc", "o0", "o1" |
| 460 |
|
|
); |
| 461 |
|
|
return value; |
| 462 |
|
|
} |
| 463 |
|
|
|
| 464 |
|
|
static inline uae_u32 sparc_v9_flag_add_16(flag_struct *flags, uae_u32 src, uae_u32 dst) |
| 465 |
|
|
{ |
| 466 |
|
|
uae_u32 value; |
| 467 |
|
|
__asm__ ("\n" |
| 468 |
|
|
" sll %2, 16, %%o0\n" |
| 469 |
|
|
" sll %3, 16, %%o1\n" |
| 470 |
|
|
" addcc %%o0, %%o1, %%o0\n" |
| 471 |
|
|
" rd %%ccr, %%o1\n" |
| 472 |
|
|
" srl %%o0, 16, %0\n" |
| 473 |
|
|
" stb %%o1, [%1]\n" |
| 474 |
|
|
" stb %%o1, [%1+1]\n" |
| 475 |
|
|
: "=&r" (value) |
| 476 |
|
|
: "r" (flags), "r" (dst), "r" (src) |
| 477 |
|
|
: "cc", "o0", "o1" |
| 478 |
|
|
); |
| 479 |
|
|
return value; |
| 480 |
|
|
} |
| 481 |
|
|
|
| 482 |
|
|
static inline uae_u32 sparc_v9_flag_add_32(flag_struct *flags, uae_u32 src, uae_u32 dst) |
| 483 |
|
|
{ |
| 484 |
|
|
uae_u32 value; |
| 485 |
|
|
__asm__ ("\n" |
| 486 |
|
|
" addcc %2, %3, %0\n" |
| 487 |
|
|
" rd %%ccr, %%o0\n" |
| 488 |
|
|
" stb %%o0, [%1]\n" |
| 489 |
|
|
" stb %%o0, [%1+1]\n" |
| 490 |
|
|
: "=&r" (value) |
| 491 |
|
|
: "r" (flags), "r" (dst), "r" (src) |
| 492 |
|
|
: "cc", "o0" |
| 493 |
|
|
); |
| 494 |
|
|
return value; |
| 495 |
|
|
} |
| 496 |
|
|
|
| 497 |
|
|
static inline uae_u32 sparc_v9_flag_sub_8(flag_struct *flags, uae_u32 src, uae_u32 dst) |
| 498 |
|
|
{ |
| 499 |
|
|
uae_u32 value; |
| 500 |
|
|
__asm__ ("\n" |
| 501 |
|
|
" sll %2, 24, %%o0\n" |
| 502 |
|
|
" sll %3, 24, %%o1\n" |
| 503 |
|
|
" subcc %%o0, %%o1, %%o0\n" |
| 504 |
|
|
" rd %%ccr, %%o1\n" |
| 505 |
|
|
" srl %%o0, 24, %0\n" |
| 506 |
|
|
" stb %%o1, [%1]\n" |
| 507 |
|
|
" stb %%o1, [%1+1]\n" |
| 508 |
|
|
: "=&r" (value) |
| 509 |
|
|
: "r" (flags), "r" (dst), "r" (src) |
| 510 |
|
|
: "cc", "o0", "o1" |
| 511 |
|
|
); |
| 512 |
|
|
return value; |
| 513 |
|
|
} |
| 514 |
|
|
|
| 515 |
|
|
static inline uae_u32 sparc_v9_flag_sub_16(flag_struct *flags, uae_u32 src, uae_u32 dst) |
| 516 |
|
|
{ |
| 517 |
|
|
uae_u32 value; |
| 518 |
|
|
__asm__ ("\n" |
| 519 |
|
|
" sll %2, 16, %%o0\n" |
| 520 |
|
|
" sll %3, 16, %%o1\n" |
| 521 |
|
|
" subcc %%o0, %%o1, %%o0\n" |
| 522 |
|
|
" rd %%ccr, %%o1\n" |
| 523 |
|
|
" srl %%o0, 16, %0\n" |
| 524 |
|
|
" stb %%o1, [%1]\n" |
| 525 |
|
|
" stb %%o1, [%1+1]\n" |
| 526 |
|
|
: "=&r" (value) |
| 527 |
|
|
: "r" (flags), "r" (dst), "r" (src) |
| 528 |
|
|
: "cc", "o0", "o1" |
| 529 |
|
|
); |
| 530 |
|
|
return value; |
| 531 |
|
|
} |
| 532 |
|
|
|
| 533 |
|
|
static inline uae_u32 sparc_v9_flag_sub_32(flag_struct *flags, uae_u32 src, uae_u32 dst) |
| 534 |
|
|
{ |
| 535 |
|
|
uae_u32 value; |
| 536 |
|
|
__asm__ ("\n" |
| 537 |
|
|
" subcc %2, %3, %0\n" |
| 538 |
|
|
" rd %%ccr, %%o0\n" |
| 539 |
|
|
" stb %%o0, [%1]\n" |
| 540 |
|
|
" stb %%o0, [%1+1]\n" |
| 541 |
|
|
: "=&r" (value) |
| 542 |
|
|
: "r" (flags), "r" (dst), "r" (src) |
| 543 |
|
|
: "cc", "o0" |
| 544 |
|
|
); |
| 545 |
|
|
return value; |
| 546 |
|
|
} |
| 547 |
|
|
|
| 548 |
|
|
static inline void sparc_v9_flag_cmp_8(flag_struct *flags, uae_u32 src, uae_u32 dst) |
| 549 |
|
|
{ |
| 550 |
|
|
__asm__ ("\n" |
| 551 |
|
|
" sll %1, 24, %%o0\n" |
| 552 |
|
|
" sll %2, 24, %%o1\n" |
| 553 |
|
|
" subcc %%o0, %%o1, %%g0\n" |
| 554 |
|
|
" rd %%ccr, %%o0\n" |
| 555 |
|
|
" stb %%o0, [%0]\n" |
| 556 |
|
|
: /* no outputs */ |
| 557 |
|
|
: "r" (flags), "r" (dst), "r" (src) |
| 558 |
|
|
: "cc", "o0", "o1" |
| 559 |
|
|
); |
| 560 |
|
|
} |
| 561 |
|
|
|
| 562 |
|
|
static inline void sparc_v9_flag_cmp_16(flag_struct *flags, uae_u32 src, uae_u32 dst) |
| 563 |
|
|
{ |
| 564 |
|
|
__asm__ ("\n" |
| 565 |
|
|
" sll %1, 16, %%o0\n" |
| 566 |
|
|
" sll %2, 16, %%o1\n" |
| 567 |
|
|
" subcc %%o0, %%o1, %%g0\n" |
| 568 |
|
|
" rd %%ccr, %%o0\n" |
| 569 |
|
|
" stb %%o0, [%0]\n" |
| 570 |
|
|
: /* no outputs */ |
| 571 |
|
|
: "r" (flags), "r" (dst), "r" (src) |
| 572 |
|
|
: "cc", "o0", "o1" |
| 573 |
|
|
); |
| 574 |
|
|
} |
| 575 |
|
|
|
| 576 |
|
|
static inline void sparc_v9_flag_cmp_32(flag_struct *flags, uae_u32 src, uae_u32 dst) |
| 577 |
|
|
{ |
| 578 |
|
|
__asm__ ("\n" |
| 579 |
|
|
" subcc %1, %2, %%g0\n" |
| 580 |
|
|
#if 0 |
| 581 |
|
|
" subcc %1, %2, %%o1\n" |
| 582 |
|
|
" srl %%o1, 31, %%o0\n" |
| 583 |
|
|
" sll %%o0, 3, %%o0\n" |
| 584 |
|
|
" addx %%o0, %%g0, %%o0\n" |
| 585 |
|
|
" bvs,a .+8\n" |
| 586 |
|
|
" or %%o0, 0x02, %%o0\n" |
| 587 |
|
|
" subcc %%g0, %%o1, %%g0\n" |
| 588 |
|
|
" addx %%g0, 7, %%o1\n" |
| 589 |
|
|
" and %%o1, 0x04, %%o1\n" |
| 590 |
|
|
" or %%o0, %%o1, %%o0\n" |
| 591 |
|
|
#endif |
| 592 |
|
|
#if 0 |
| 593 |
|
|
" subcc %1, %2, %%o1\n" |
| 594 |
|
|
" srl %%o1, 31, %%o0\n" |
| 595 |
|
|
" sll %%o0, 3, %%o0\n" |
| 596 |
|
|
" addx %%o0, %%g0, %%o0\n" |
| 597 |
|
|
" bvs,pt,a .+8\n" |
| 598 |
|
|
" or %%o0, 0x02, %%o0\n" |
| 599 |
|
|
" subcc %%g0, %%o1, %%g0\n" |
| 600 |
|
|
" addx %%g0, 7, %%o1\n" |
| 601 |
|
|
" and %%o1, 0x04, %%o1\n" |
| 602 |
|
|
" or %%o0, %%o1, %%o0\n" |
| 603 |
|
|
" stb %%o0, [%0]\n" |
| 604 |
|
|
#endif |
| 605 |
|
|
" rd %%ccr, %%o0\n" |
| 606 |
|
|
" stb %%o0, [%0]\n" |
| 607 |
|
|
: /* no outputs */ |
| 608 |
|
|
: "r" (flags), "r" (dst), "r" (src) |
| 609 |
|
|
: "cc", "o0", "o1" |
| 610 |
|
|
); |
| 611 |
|
|
} |
| 612 |
|
|
|
| 613 |
|
|
#if 1 |
| 614 |
|
|
static inline void sparc_v9_flag_test_8(flag_struct *flags, uae_u32 val) |
| 615 |
|
|
{ |
| 616 |
|
|
__asm__ ("\n" |
| 617 |
|
|
" sll %1, 24, %%o0\n" |
| 618 |
|
|
" subcc %%o0, %%g0, %%g0\n" |
| 619 |
|
|
" rd %%ccr, %%o0\n" |
| 620 |
|
|
" stb %%o0, [%0]\n" |
| 621 |
|
|
: /* no outputs */ |
| 622 |
|
|
: "r" (flags), "r" (val) |
| 623 |
|
|
: "cc", "o0" |
| 624 |
|
|
); |
| 625 |
|
|
} |
| 626 |
|
|
|
| 627 |
|
|
static inline void sparc_v9_flag_test_16(flag_struct *flags, uae_u32 val) |
| 628 |
|
|
{ |
| 629 |
|
|
__asm__ ("\n" |
| 630 |
|
|
" sll %1, 16, %%o0\n" |
| 631 |
|
|
" subcc %%o0, %%g0, %%g0\n" |
| 632 |
|
|
" rd %%ccr, %%o0\n" |
| 633 |
|
|
" stb %%o0, [%0]\n" |
| 634 |
|
|
: /* no outputs */ |
| 635 |
|
|
: "r" (flags), "r" (val) |
| 636 |
|
|
: "cc", "o0" |
| 637 |
|
|
); |
| 638 |
|
|
} |
| 639 |
|
|
|
| 640 |
|
|
static inline void sparc_v9_flag_test_32(flag_struct *flags, uae_u32 val) |
| 641 |
|
|
{ |
| 642 |
|
|
__asm__ ("\n" |
| 643 |
|
|
" subcc %1, %%g0, %%g0\n" |
| 644 |
|
|
" rd %%ccr, %%o0\n" |
| 645 |
|
|
" stb %%o0, [%0]\n" |
| 646 |
|
|
: /* no outputs */ |
| 647 |
|
|
: "r" (flags), "r" (val) |
| 648 |
|
|
: "cc", "o0" |
| 649 |
|
|
); |
| 650 |
|
|
} |
| 651 |
|
|
#else |
| 652 |
|
|
static inline void sparc_v9_flag_test_8(flag_struct *flags, uae_u32 val) |
| 653 |
|
|
{ |
| 654 |
|
|
__asm__ ("\n" |
| 655 |
|
|
" sll %1, 24, %%o0\n" |
| 656 |
|
|
" subcc %%o0, %%g0, %%o1\n" |
| 657 |
|
|
" srl %%o1, 31, %%o0\n" |
| 658 |
|
|
" sll %%o0, 3, %%o0\n" |
| 659 |
|
|
" addx %%o0, %%g0, %%o0\n" |
| 660 |
|
|
" bvs,a .+8\n" |
| 661 |
|
|
" or %%o0, 0x02, %%o0\n" |
| 662 |
|
|
" subcc %%g0, %%o1, %%g0\n" |
| 663 |
|
|
" addx %%g0, 7, %%o1\n" |
| 664 |
|
|
" and %%o1, 0x04, %%o1\n" |
| 665 |
|
|
" or %%o0, %%o1, %%o0\n" |
| 666 |
|
|
" stb %%o0, [%0]\n" |
| 667 |
|
|
: /* no outputs */ |
| 668 |
|
|
: "r" (flags), "r" (val) |
| 669 |
|
|
: "cc", "o0", "o1" |
| 670 |
|
|
); |
| 671 |
|
|
} |
| 672 |
|
|
|
| 673 |
|
|
static inline void sparc_v9_flag_test_16(flag_struct *flags, uae_u32 val) |
| 674 |
|
|
{ |
| 675 |
|
|
__asm__ ("\n" |
| 676 |
|
|
" sll %1, 16, %%o0\n" |
| 677 |
|
|
" subcc %%o0, %%g0, %%o1\n" |
| 678 |
|
|
" srl %%o1, 31, %%o0\n" |
| 679 |
|
|
" sll %%o0, 3, %%o0\n" |
| 680 |
|
|
" addx %%o0, %%g0, %%o0\n" |
| 681 |
|
|
" bvs,a .+8\n" |
| 682 |
|
|
" or %%o0, 0x02, %%o0\n" |
| 683 |
|
|
" subcc %%g0, %%o1, %%g0\n" |
| 684 |
|
|
" addx %%g0, 7, %%o1\n" |
| 685 |
|
|
" and %%o1, 0x04, %%o1\n" |
| 686 |
|
|
" or %%o0, %%o1, %%o0\n" |
| 687 |
|
|
" stb %%o0, [%0]\n" |
| 688 |
|
|
: /* no outputs */ |
| 689 |
|
|
: "r" (flags), "r" (val) |
| 690 |
|
|
: "cc", "o0", "o1" |
| 691 |
|
|
); |
| 692 |
|
|
} |
| 693 |
|
|
|
| 694 |
|
|
static inline void sparc_v9_flag_test_32(flag_struct *flags, uae_u32 val) |
| 695 |
|
|
{ |
| 696 |
|
|
__asm__ ("\n" |
| 697 |
|
|
" subcc %1, %%g0, %%o1\n" |
| 698 |
|
|
" srl %%o1, 31, %%o0\n" |
| 699 |
|
|
" sll %%o0, 3, %%o0\n" |
| 700 |
|
|
" addx %%o0, %%g0, %%o0\n" |
| 701 |
|
|
" bvs,a .+8\n" |
| 702 |
|
|
" or %%o0, 0x02, %%o0\n" |
| 703 |
|
|
" subcc %%g0, %%o1, %%g0\n" |
| 704 |
|
|
" addx %%g0, 7, %%o1\n" |
| 705 |
|
|
" and %%o1, 0x04, %%o1\n" |
| 706 |
|
|
" or %%o0, %%o1, %%o0\n" |
| 707 |
|
|
" stb %%o0, [%0]\n" |
| 708 |
|
|
: /* no outputs */ |
| 709 |
|
|
: "r" (flags), "r" (val) |
| 710 |
|
|
: "cc", "o0", "o1" |
| 711 |
|
|
); |
| 712 |
|
|
} |
| 713 |
|
|
#endif |
| 714 |
|
|
|
| 715 |
|
|
static inline uae_u32 sparc_v9_flag_addx_8(flag_struct *flags, uae_u32 src, uae_u32 dst) |
| 716 |
|
|
{ |
| 717 |
|
|
uae_u32 value; |
| 718 |
|
|
__asm__ ("\n" |
| 719 |
|
|
" ldub [%1 + 1], %%o1 ! Get the X Flag\n" |
| 720 |
|
|
" subcc %%g0, %%o1, %%g0 ! Set the SPARC carry flag, if X set\n" |
| 721 |
|
|
" addxcc %2, %3, %0\n" |
| 722 |
|
|
: "=&r" (value) |
| 723 |
|
|
: "r" (flags), "r" (dst), "r" (src) |
| 724 |
|
|
: "cc", "o0", "o1" |
| 725 |
|
|
); |
| 726 |
|
|
return value; |
| 727 |
|
|
} |
| 728 |
|
|
|
| 729 |
|
|
static inline uae_u32 sparc_v9_flag_addx_32(flag_struct *flags, uae_u32 src, uae_u32 dst) |
| 730 |
|
|
{ |
| 731 |
|
|
uae_u32 value; |
| 732 |
|
|
__asm__ ("\n" |
| 733 |
|
|
" ldub [%1 + 1], %%o0 ! Get the X Flag\n" |
| 734 |
|
|
" subcc %%g0, %%o0, %%g0 ! Set the SPARC carry flag, if X set\n" |
| 735 |
|
|
" addxcc %2, %3, %0\n" |
| 736 |
|
|
" ldub [%1], %%o0 ! retreive the old NZVC flags\n" |
| 737 |
|
|
" and %%o0, 0x04, %%o0 ! but keep only Z flag\n" |
| 738 |
|
|
" addx %%o0, %%g0, %%o0 ! X,C flags\n" |
| 739 |
|
|
" bl,a .+8\n" |
| 740 |
|
|
" or %%o0, 0x08, %%o0 ! N flag\n" |
| 741 |
|
|
" bvs,a .+8\n" |
| 742 |
|
|
" or %%o0, 0x02, %%o0 ! V flag\n" |
| 743 |
|
|
" bnz,a .+8\n" |
| 744 |
|
|
" and %%o0, 0x0B, %%o0 ! Z flag cleared if result is non-zero\n" |
| 745 |
|
|
" stb %%o0, [%1]\n" |
| 746 |
|
|
" stb %%o0, [%1 + 1]\n" |
| 747 |
|
|
: "=&r" (value) |
| 748 |
|
|
: "r" (flags), "r" (dst), "r" (src) |
| 749 |
|
|
: "cc", "o0" |
| 750 |
|
|
); |
| 751 |
|
|
return value; |
| 752 |
|
|
} |
| 753 |
|
|
|
| 754 |
|
|
#endif /* SPARC_V9_ASSEMBLY */ |
| 755 |
cebix |
1.1 |
|
| 756 |
|
|
#else |
| 757 |
|
|
|
| 758 |
|
|
struct flag_struct { |
| 759 |
|
|
unsigned int c; |
| 760 |
|
|
unsigned int z; |
| 761 |
|
|
unsigned int n; |
| 762 |
|
|
unsigned int v; |
| 763 |
|
|
unsigned int x; |
| 764 |
|
|
}; |
| 765 |
|
|
|
| 766 |
|
|
extern struct flag_struct regflags; |
| 767 |
|
|
|
| 768 |
|
|
#define ZFLG (regflags.z) |
| 769 |
|
|
#define NFLG (regflags.n) |
| 770 |
|
|
#define CFLG (regflags.c) |
| 771 |
|
|
#define VFLG (regflags.v) |
| 772 |
|
|
#define XFLG (regflags.x) |
| 773 |
|
|
|
| 774 |
|
|
static __inline__ int cctrue(const int cc) |
| 775 |
|
|
{ |
| 776 |
|
|
switch(cc){ |
| 777 |
|
|
case 0: return 1; /* T */ |
| 778 |
|
|
case 1: return 0; /* F */ |
| 779 |
|
|
case 2: return !CFLG && !ZFLG; /* HI */ |
| 780 |
|
|
case 3: return CFLG || ZFLG; /* LS */ |
| 781 |
|
|
case 4: return !CFLG; /* CC */ |
| 782 |
|
|
case 5: return CFLG; /* CS */ |
| 783 |
|
|
case 6: return !ZFLG; /* NE */ |
| 784 |
|
|
case 7: return ZFLG; /* EQ */ |
| 785 |
|
|
case 8: return !VFLG; /* VC */ |
| 786 |
|
|
case 9: return VFLG; /* VS */ |
| 787 |
|
|
case 10:return !NFLG; /* PL */ |
| 788 |
|
|
case 11:return NFLG; /* MI */ |
| 789 |
|
|
case 12:return NFLG == VFLG; /* GE */ |
| 790 |
|
|
case 13:return NFLG != VFLG; /* LT */ |
| 791 |
|
|
case 14:return !ZFLG && (NFLG == VFLG); /* GT */ |
| 792 |
|
|
case 15:return ZFLG || (NFLG != VFLG); /* LE */ |
| 793 |
|
|
} |
| 794 |
|
|
return 0; |
| 795 |
|
|
} |
| 796 |
|
|
|
| 797 |
|
|
#endif |
