| 1 |
/* |
| 2 |
* UAE - The Un*x Amiga Emulator |
| 3 |
* |
| 4 |
* MC68000 emulation - machine dependent bits |
| 5 |
* |
| 6 |
* Copyright 1996 Bernd Schmidt |
| 7 |
*/ |
| 8 |
|
| 9 |
#ifndef M68K_FLAGS_H |
| 10 |
#define M68K_FLAGS_H |
| 11 |
|
| 12 |
#ifdef OPTIMIZED_FLAGS |
| 13 |
|
| 14 |
#if (defined(__i386__) && defined(X86_ASSEMBLY)) || (defined(__x86_64__) && defined(X86_64_ASSEMBLY)) |
| 15 |
|
| 16 |
#ifndef SAHF_SETO_PROFITABLE |
| 17 |
|
| 18 |
/* PUSH/POP instructions are naturally 64-bit sized on x86-64, thus |
| 19 |
unsigned long hereunder is either 64-bit or 32-bit wide depending |
| 20 |
on the target. */ |
| 21 |
struct flag_struct { |
| 22 |
unsigned long cznv; |
| 23 |
unsigned long x; |
| 24 |
}; |
| 25 |
|
| 26 |
#define FLAGVAL_Z 0x40 |
| 27 |
#define FLAGVAL_N 0x80 |
| 28 |
|
| 29 |
#define SET_ZFLG(y) (regflags.cznv = (((uae_u32)regflags.cznv) & ~0x40) | (((y) & 1) << 6)) |
| 30 |
#define SET_CFLG(y) (regflags.cznv = (((uae_u32)regflags.cznv) & ~1) | ((y) & 1)) |
| 31 |
#define SET_VFLG(y) (regflags.cznv = (((uae_u32)regflags.cznv) & ~0x800) | (((y) & 1) << 11)) |
| 32 |
#define SET_NFLG(y) (regflags.cznv = (((uae_u32)regflags.cznv) & ~0x80) | (((y) & 1) << 7)) |
| 33 |
#define SET_XFLG(y) (regflags.x = (y)) |
| 34 |
|
| 35 |
#define GET_ZFLG ((regflags.cznv >> 6) & 1) |
| 36 |
#define GET_CFLG (regflags.cznv & 1) |
| 37 |
#define GET_VFLG ((regflags.cznv >> 11) & 1) |
| 38 |
#define GET_NFLG ((regflags.cznv >> 7) & 1) |
| 39 |
#define GET_XFLG (regflags.x & 1) |
| 40 |
|
| 41 |
#define CLEAR_CZNV (regflags.cznv = 0) |
| 42 |
#define GET_CZNV (regflags.cznv) |
| 43 |
#define IOR_CZNV(X) (regflags.cznv |= (X)) |
| 44 |
#define SET_CZNV(X) (regflags.cznv = (X)) |
| 45 |
|
| 46 |
#define COPY_CARRY (regflags.x = regflags.cznv) |
| 47 |
|
| 48 |
extern struct flag_struct regflags __asm__ ("regflags"); |
| 49 |
|
| 50 |
static __inline__ int cctrue(int cc) |
| 51 |
{ |
| 52 |
uae_u32 cznv = regflags.cznv; |
| 53 |
switch(cc){ |
| 54 |
case 0: return 1; /* T */ |
| 55 |
case 1: return 0; /* F */ |
| 56 |
case 2: return (cznv & 0x41) == 0; /* !GET_CFLG && !GET_ZFLG; HI */ |
| 57 |
case 3: return (cznv & 0x41) != 0; /* GET_CFLG || GET_ZFLG; LS */ |
| 58 |
case 4: return (cznv & 1) == 0; /* !GET_CFLG; CC */ |
| 59 |
case 5: return (cznv & 1) != 0; /* GET_CFLG; CS */ |
| 60 |
case 6: return (cznv & 0x40) == 0; /* !GET_ZFLG; NE */ |
| 61 |
case 7: return (cznv & 0x40) != 0; /* GET_ZFLG; EQ */ |
| 62 |
case 8: return (cznv & 0x800) == 0;/* !GET_VFLG; VC */ |
| 63 |
case 9: return (cznv & 0x800) != 0;/* GET_VFLG; VS */ |
| 64 |
case 10:return (cznv & 0x80) == 0; /* !GET_NFLG; PL */ |
| 65 |
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 */ |
| 67 |
case 13:return (((cznv << 4) ^ cznv) & 0x800) != 0;/* GET_NFLG != GET_VFLG; LT */ |
| 68 |
case 14: |
| 69 |
cznv &= 0x8c0; |
| 70 |
return (((cznv << 4) ^ cznv) & 0x840) == 0; /* !GET_ZFLG && (GET_NFLG == GET_VFLG); GT */ |
| 71 |
case 15: |
| 72 |
cznv &= 0x8c0; |
| 73 |
return (((cznv << 4) ^ cznv) & 0x840) != 0; /* GET_ZFLG || (GET_NFLG != GET_VFLG); LE */ |
| 74 |
} |
| 75 |
return 0; |
| 76 |
} |
| 77 |
|
| 78 |
#define optflag_testl(v) \ |
| 79 |
__asm__ __volatile__ ("andl %1,%1\n\t" \ |
| 80 |
"pushf\n\t" \ |
| 81 |
"pop %0\n\t" \ |
| 82 |
: "=r" (regflags.cznv) : "r" (v) : "cc") |
| 83 |
|
| 84 |
#define optflag_testw(v) \ |
| 85 |
__asm__ __volatile__ ("andw %w1,%w1\n\t" \ |
| 86 |
"pushf\n\t" \ |
| 87 |
"pop %0\n\t" \ |
| 88 |
: "=r" (regflags.cznv) : "r" (v) : "cc") |
| 89 |
|
| 90 |
#define optflag_testb(v) \ |
| 91 |
__asm__ __volatile__ ("andb %b1,%b1\n\t" \ |
| 92 |
"pushf\n\t" \ |
| 93 |
"pop %0\n\t" \ |
| 94 |
: "=r" (regflags.cznv) : "q" (v) : "cc") |
| 95 |
|
| 96 |
#define optflag_addl(v, s, d) do { \ |
| 97 |
__asm__ __volatile__ ("addl %k2,%k1\n\t" \ |
| 98 |
"pushf\n\t" \ |
| 99 |
"pop %0\n\t" \ |
| 100 |
: "=r" (regflags.cznv), "=r" (v) : "rmi" (s), "1" (d) : "cc"); \ |
| 101 |
COPY_CARRY; \ |
| 102 |
} while (0) |
| 103 |
|
| 104 |
#define optflag_addw(v, s, d) do { \ |
| 105 |
__asm__ __volatile__ ("addw %w2,%w1\n\t" \ |
| 106 |
"pushf\n\t" \ |
| 107 |
"pop %0\n\t" \ |
| 108 |
: "=r" (regflags.cznv), "=r" (v) : "rmi" (s), "1" (d) : "cc"); \ |
| 109 |
COPY_CARRY; \ |
| 110 |
} while (0) |
| 111 |
|
| 112 |
#define optflag_addb(v, s, d) do { \ |
| 113 |
__asm__ __volatile__ ("addb %b2,%b1\n\t" \ |
| 114 |
"pushf\n\t" \ |
| 115 |
"pop %0\n\t" \ |
| 116 |
: "=r" (regflags.cznv), "=q" (v) : "qmi" (s), "1" (d) : "cc"); \ |
| 117 |
COPY_CARRY; \ |
| 118 |
} while (0) |
| 119 |
|
| 120 |
#define optflag_subl(v, s, d) do { \ |
| 121 |
__asm__ __volatile__ ("subl %k2,%k1\n\t" \ |
| 122 |
"pushf\n\t" \ |
| 123 |
"pop %0\n\t" \ |
| 124 |
: "=r" (regflags.cznv), "=r" (v) : "rmi" (s), "1" (d) : "cc"); \ |
| 125 |
COPY_CARRY; \ |
| 126 |
} while (0) |
| 127 |
|
| 128 |
#define optflag_subw(v, s, d) do { \ |
| 129 |
__asm__ __volatile__ ("subw %w2,%w1\n\t" \ |
| 130 |
"pushf\n\t" \ |
| 131 |
"pop %0\n\t" \ |
| 132 |
: "=r" (regflags.cznv), "=r" (v) : "rmi" (s), "1" (d) : "cc"); \ |
| 133 |
COPY_CARRY; \ |
| 134 |
} while (0) |
| 135 |
|
| 136 |
#define optflag_subb(v, s, d) do { \ |
| 137 |
__asm__ __volatile__ ("subb %b2,%b1\n\t" \ |
| 138 |
"pushf\n\t" \ |
| 139 |
"pop %0\n\t" \ |
| 140 |
: "=r" (regflags.cznv), "=q" (v) : "qmi" (s), "1" (d) : "cc"); \ |
| 141 |
COPY_CARRY; \ |
| 142 |
} while (0) |
| 143 |
|
| 144 |
#define optflag_cmpl(s, d) \ |
| 145 |
__asm__ __volatile__ ("cmpl %k1,%k2\n\t" \ |
| 146 |
"pushf\n\t" \ |
| 147 |
"pop %0\n\t" \ |
| 148 |
: "=r" (regflags.cznv) : "rmi" (s), "r" (d) : "cc") |
| 149 |
|
| 150 |
#define optflag_cmpw(s, d) \ |
| 151 |
__asm__ __volatile__ ("cmpw %w1,%w2\n\t" \ |
| 152 |
"pushf\n\t" \ |
| 153 |
"pop %0\n\t" \ |
| 154 |
: "=r" (regflags.cznv) : "rmi" (s), "r" (d) : "cc") |
| 155 |
|
| 156 |
#define optflag_cmpb(s, d) \ |
| 157 |
__asm__ __volatile__ ("cmpb %b1,%b2\n\t" \ |
| 158 |
"pushf\n\t" \ |
| 159 |
"pop %0\n\t" \ |
| 160 |
: "=r" (regflags.cznv) : "qmi" (s), "q" (d) : "cc") |
| 161 |
|
| 162 |
#else |
| 163 |
|
| 164 |
struct flag_struct { |
| 165 |
uae_u32 cznv; |
| 166 |
uae_u32 x; |
| 167 |
}; |
| 168 |
|
| 169 |
#define FLAGVAL_Z 0x4000 |
| 170 |
#define FLAGVAL_N 0x8000 |
| 171 |
|
| 172 |
#define SET_ZFLG(y) (regflags.cznv = (regflags.cznv & ~0x4000) | (((y) & 1) << 14)) |
| 173 |
#define SET_CFLG(y) (regflags.cznv = (regflags.cznv & ~0x100) | (((y) & 1) << 8)) |
| 174 |
#define SET_VFLG(y) (regflags.cznv = (regflags.cznv & ~0x1) | (((y) & 1))) |
| 175 |
#define SET_NFLG(y) (regflags.cznv = (regflags.cznv & ~0x8000) | (((y) & 1) << 15)) |
| 176 |
#define SET_XFLG(y) (regflags.x = (y)) |
| 177 |
|
| 178 |
#define GET_ZFLG ((regflags.cznv >> 14) & 1) |
| 179 |
#define GET_CFLG ((regflags.cznv >> 8) & 1) |
| 180 |
#define GET_VFLG ((regflags.cznv >> 0) & 1) |
| 181 |
#define GET_NFLG ((regflags.cznv >> 15) & 1) |
| 182 |
#define GET_XFLG (regflags.x & 1) |
| 183 |
|
| 184 |
#define CLEAR_CZNV (regflags.cznv = 0) |
| 185 |
#define GET_CZNV (regflags.cznv) |
| 186 |
#define IOR_CZNV(X) (regflags.cznv |= (X)) |
| 187 |
#define SET_CZNV(X) (regflags.cznv = (X)) |
| 188 |
|
| 189 |
#define COPY_CARRY (regflags.x = (regflags.cznv)>>8) |
| 190 |
|
| 191 |
extern struct flag_struct regflags __asm__ ("regflags"); |
| 192 |
|
| 193 |
static __inline__ int cctrue(int cc) |
| 194 |
{ |
| 195 |
uae_u32 cznv = regflags.cznv; |
| 196 |
switch(cc){ |
| 197 |
case 0: return 1; /* T */ |
| 198 |
case 1: return 0; /* F */ |
| 199 |
case 2: return (cznv & 0x4100) == 0; /* !GET_CFLG && !GET_ZFLG; HI */ |
| 200 |
case 3: return (cznv & 0x4100) != 0; /* GET_CFLG || GET_ZFLG; LS */ |
| 201 |
case 4: return (cznv & 0x100) == 0; /* !GET_CFLG; CC */ |
| 202 |
case 5: return (cznv & 0x100) != 0; /* GET_CFLG; CS */ |
| 203 |
case 6: return (cznv & 0x4000) == 0; /* !GET_ZFLG; NE */ |
| 204 |
case 7: return (cznv & 0x4000) != 0; /* GET_ZFLG; EQ */ |
| 205 |
case 8: return (cznv & 0x01) == 0; /* !GET_VFLG; VC */ |
| 206 |
case 9: return (cznv & 0x01) != 0; /* GET_VFLG; VS */ |
| 207 |
case 10:return (cznv & 0x8000) == 0; /* !GET_NFLG; PL */ |
| 208 |
case 11:return (cznv & 0x8000) != 0; /* GET_NFLG; MI */ |
| 209 |
case 12:return (((cznv << 15) ^ cznv) & 0x8000) == 0; /* GET_NFLG == GET_VFLG; GE */ |
| 210 |
case 13:return (((cznv << 15) ^ cznv) & 0x8000) != 0;/* GET_NFLG != GET_VFLG; LT */ |
| 211 |
case 14: |
| 212 |
cznv &= 0xc001; |
| 213 |
return (((cznv << 15) ^ cznv) & 0xc000) == 0; /* !GET_ZFLG && (GET_NFLG == GET_VFLG); GT */ |
| 214 |
case 15: |
| 215 |
cznv &= 0xc001; |
| 216 |
return (((cznv << 15) ^ cznv) & 0xc000) != 0; /* GET_ZFLG || (GET_NFLG != GET_VFLG); LE */ |
| 217 |
} |
| 218 |
abort(); |
| 219 |
return 0; |
| 220 |
} |
| 221 |
|
| 222 |
/* Manually emit LAHF instruction so that 64-bit assemblers can grok it */ |
| 223 |
#if defined __x86_64__ && defined __GNUC__ |
| 224 |
#define ASM_LAHF ".byte 0x9f" |
| 225 |
#else |
| 226 |
#define ASM_LAHF "lahf" |
| 227 |
#endif |
| 228 |
|
| 229 |
/* Is there any way to do this without declaring *all* memory clobbered? |
| 230 |
I.e. any way to tell gcc that some byte-sized value is in %al? */ |
| 231 |
#define optflag_testl(v) \ |
| 232 |
__asm__ __volatile__ ("andl %0,%0\n\t" \ |
| 233 |
ASM_LAHF "\n\t" \ |
| 234 |
"seto %%al\n\t" \ |
| 235 |
"movb %%al,regflags\n\t" \ |
| 236 |
"movb %%ah,regflags+1\n\t" \ |
| 237 |
: : "r" (v) : "%eax","cc","memory") |
| 238 |
|
| 239 |
#define optflag_testw(v) \ |
| 240 |
__asm__ __volatile__ ("andw %w0,%w0\n\t" \ |
| 241 |
ASM_LAHF "\n\t" \ |
| 242 |
"seto %%al\n\t" \ |
| 243 |
"movb %%al,regflags\n\t" \ |
| 244 |
"movb %%ah,regflags+1\n\t" \ |
| 245 |
: : "r" (v) : "%eax","cc","memory") |
| 246 |
|
| 247 |
#define optflag_testb(v) \ |
| 248 |
__asm__ __volatile__ ("andb %b0,%b0\n\t" \ |
| 249 |
ASM_LAHF "\n\t" \ |
| 250 |
"seto %%al\n\t" \ |
| 251 |
"movb %%al,regflags\n\t" \ |
| 252 |
"movb %%ah,regflags+1\n\t" \ |
| 253 |
: : "q" (v) : "%eax","cc","memory") |
| 254 |
|
| 255 |
#define optflag_addl(v, s, d) do { \ |
| 256 |
__asm__ __volatile__ ("addl %k1,%k0\n\t" \ |
| 257 |
ASM_LAHF "\n\t" \ |
| 258 |
"seto %%al\n\t" \ |
| 259 |
"movb %%al,regflags\n\t" \ |
| 260 |
"movb %%ah,regflags+1\n\t" \ |
| 261 |
: "=r" (v) : "rmi" (s), "0" (d) : "%eax","cc","memory"); \ |
| 262 |
COPY_CARRY; \ |
| 263 |
} while (0) |
| 264 |
|
| 265 |
#define optflag_addw(v, s, d) do { \ |
| 266 |
__asm__ __volatile__ ("addw %w1,%w0\n\t" \ |
| 267 |
ASM_LAHF "\n\t" \ |
| 268 |
"seto %%al\n\t" \ |
| 269 |
"movb %%al,regflags\n\t" \ |
| 270 |
"movb %%ah,regflags+1\n\t" \ |
| 271 |
: "=r" (v) : "rmi" (s), "0" (d) : "%eax","cc","memory"); \ |
| 272 |
COPY_CARRY; \ |
| 273 |
} while (0) |
| 274 |
|
| 275 |
#define optflag_addb(v, s, d) do { \ |
| 276 |
__asm__ __volatile__ ("addb %b1,%b0\n\t" \ |
| 277 |
ASM_LAHF "\n\t" \ |
| 278 |
"seto %%al\n\t" \ |
| 279 |
"movb %%al,regflags\n\t" \ |
| 280 |
"movb %%ah,regflags+1\n\t" \ |
| 281 |
: "=q" (v) : "qmi" (s), "0" (d) : "%eax","cc","memory"); \ |
| 282 |
COPY_CARRY; \ |
| 283 |
} while (0) |
| 284 |
|
| 285 |
#define optflag_subl(v, s, d) do { \ |
| 286 |
__asm__ __volatile__ ("subl %k1,%k0\n\t" \ |
| 287 |
ASM_LAHF "\n\t" \ |
| 288 |
"seto %%al\n\t" \ |
| 289 |
"movb %%al,regflags\n\t" \ |
| 290 |
"movb %%ah,regflags+1\n\t" \ |
| 291 |
: "=r" (v) : "rmi" (s), "0" (d) : "%eax","cc","memory"); \ |
| 292 |
COPY_CARRY; \ |
| 293 |
} while (0) |
| 294 |
|
| 295 |
#define optflag_subw(v, s, d) do { \ |
| 296 |
__asm__ __volatile__ ("subw %w1,%w0\n\t" \ |
| 297 |
ASM_LAHF "\n\t" \ |
| 298 |
"seto %%al\n\t" \ |
| 299 |
"movb %%al,regflags\n\t" \ |
| 300 |
"movb %%ah,regflags+1\n\t" \ |
| 301 |
: "=r" (v) : "rmi" (s), "0" (d) : "%eax","cc","memory"); \ |
| 302 |
COPY_CARRY; \ |
| 303 |
} while (0) |
| 304 |
|
| 305 |
#define optflag_subb(v, s, d) do { \ |
| 306 |
__asm__ __volatile__ ("subb %b1,%b0\n\t" \ |
| 307 |
ASM_LAHF "\n\t" \ |
| 308 |
"seto %%al\n\t" \ |
| 309 |
"movb %%al,regflags\n\t" \ |
| 310 |
"movb %%ah,regflags+1\n\t" \ |
| 311 |
: "=q" (v) : "qmi" (s), "0" (d) : "%eax","cc","memory"); \ |
| 312 |
COPY_CARRY; \ |
| 313 |
} while (0) |
| 314 |
|
| 315 |
#define optflag_cmpl(s, d) \ |
| 316 |
__asm__ __volatile__ ("cmpl %k0,%k1\n\t" \ |
| 317 |
ASM_LAHF "\n\t" \ |
| 318 |
"seto %%al\n\t" \ |
| 319 |
"movb %%al,regflags\n\t" \ |
| 320 |
"movb %%ah,regflags+1\n\t" \ |
| 321 |
: : "rmi" (s), "r" (d) : "%eax","cc","memory") |
| 322 |
|
| 323 |
#define optflag_cmpw(s, d) \ |
| 324 |
__asm__ __volatile__ ("cmpw %w0,%w1\n\t" \ |
| 325 |
ASM_LAHF "\n\t" \ |
| 326 |
"seto %%al\n\t" \ |
| 327 |
"movb %%al,regflags\n\t" \ |
| 328 |
"movb %%ah,regflags+1\n\t" \ |
| 329 |
: : "rmi" (s), "r" (d) : "%eax","cc","memory"); |
| 330 |
|
| 331 |
#define optflag_cmpb(s, d) \ |
| 332 |
__asm__ __volatile__ ("cmpb %b0,%b1\n\t" \ |
| 333 |
ASM_LAHF "\n\t" \ |
| 334 |
"seto %%al\n\t" \ |
| 335 |
"movb %%al,regflags\n\t" \ |
| 336 |
"movb %%ah,regflags+1\n\t" \ |
| 337 |
: : "qmi" (s), "q" (d) : "%eax","cc","memory") |
| 338 |
|
| 339 |
#endif |
| 340 |
|
| 341 |
#elif defined(__sparc__) && (defined(SPARC_V8_ASSEMBLY) || defined(SPARC_V9_ASSEMBLY)) |
| 342 |
|
| 343 |
struct flag_struct { |
| 344 |
unsigned char nzvc; |
| 345 |
unsigned char x; |
| 346 |
}; |
| 347 |
|
| 348 |
extern struct flag_struct regflags; |
| 349 |
|
| 350 |
#define FLAGVAL_Z 0x04 |
| 351 |
#define FLAGVAL_N 0x08 |
| 352 |
|
| 353 |
#define SET_ZFLG(y) (regflags.nzvc = (regflags.nzvc & ~0x04) | (((y) & 1) << 2)) |
| 354 |
#define SET_CFLG(y) (regflags.nzvc = (regflags.nzvc & ~1) | ((y) & 1)) |
| 355 |
#define SET_VFLG(y) (regflags.nzvc = (regflags.nzvc & ~0x02) | (((y) & 1) << 1)) |
| 356 |
#define SET_NFLG(y) (regflags.nzvc = (regflags.nzvc & ~0x08) | (((y) & 1) << 3)) |
| 357 |
#define SET_XFLG(y) (regflags.x = (y)) |
| 358 |
|
| 359 |
#define GET_ZFLG ((regflags.nzvc >> 2) & 1) |
| 360 |
#define GET_CFLG (regflags.nzvc & 1) |
| 361 |
#define GET_VFLG ((regflags.nzvc >> 1) & 1) |
| 362 |
#define GET_NFLG ((regflags.nzvc >> 3) & 1) |
| 363 |
#define GET_XFLG (regflags.x & 1) |
| 364 |
|
| 365 |
#define CLEAR_CZNV (regflags.nzvc = 0) |
| 366 |
#define GET_CZNV (reflags.nzvc) |
| 367 |
#define IOR_CZNV(X) (refglags.nzvc |= (X)) |
| 368 |
#define SET_CZNV(X) (regflags.nzvc = (X)) |
| 369 |
|
| 370 |
#define COPY_CARRY (regflags.x = regflags.nzvc) |
| 371 |
|
| 372 |
static __inline__ int cctrue(int cc) |
| 373 |
{ |
| 374 |
uae_u32 nzvc = regflags.nzvc; |
| 375 |
switch(cc){ |
| 376 |
case 0: return 1; /* T */ |
| 377 |
case 1: return 0; /* F */ |
| 378 |
case 2: return (nzvc & 0x05) == 0; /* !GET_CFLG && !GET_ZFLG; HI */ |
| 379 |
case 3: return (nzvc & 0x05) != 0; /* GET_CFLG || GET_ZFLG; LS */ |
| 380 |
case 4: return (nzvc & 1) == 0; /* !GET_CFLG; CC */ |
| 381 |
case 5: return (nzvc & 1) != 0; /* GET_CFLG; CS */ |
| 382 |
case 6: return (nzvc & 0x04) == 0; /* !GET_ZFLG; NE */ |
| 383 |
case 7: return (nzvc & 0x04) != 0; /* GET_ZFLG; EQ */ |
| 384 |
case 8: return (nzvc & 0x02) == 0;/* !GET_VFLG; VC */ |
| 385 |
case 9: return (nzvc & 0x02) != 0;/* GET_VFLG; VS */ |
| 386 |
case 10:return (nzvc & 0x08) == 0; /* !GET_NFLG; PL */ |
| 387 |
case 11:return (nzvc & 0x08) != 0; /* GET_NFLG; MI */ |
| 388 |
case 12:return (((nzvc << 2) ^ nzvc) & 0x08) == 0; /* GET_NFLG == GET_VFLG; GE */ |
| 389 |
case 13:return (((nzvc << 2) ^ nzvc) & 0x08) != 0;/* GET_NFLG != GET_VFLG; LT */ |
| 390 |
case 14: |
| 391 |
nzvc &= 0x0e; |
| 392 |
return (((nzvc << 2) ^ nzvc) & 0x0c) == 0; /* !GET_ZFLG && (GET_NFLG == GET_VFLG); GT */ |
| 393 |
case 15: |
| 394 |
nzvc &= 0x0e; |
| 395 |
return (((nzvc << 2) ^ nzvc) & 0x0c) != 0; /* GET_ZFLG || (GET_NFLG != GET_VFLG); LE */ |
| 396 |
} |
| 397 |
return 0; |
| 398 |
} |
| 399 |
|
| 400 |
#ifdef SPARC_V8_ASSEMBLY |
| 401 |
|
| 402 |
static inline uae_u32 sparc_v8_flag_add_8(flag_struct *flags, uae_u32 src, uae_u32 dst) |
| 403 |
{ |
| 404 |
uae_u32 value; |
| 405 |
__asm__ ("\n" |
| 406 |
" sll %2, 24, %%o0\n" |
| 407 |
" sll %3, 24, %%o1\n" |
| 408 |
" addcc %%o0, %%o1, %%o0\n" |
| 409 |
" addx %%g0, %%g0, %%o1 ! X,C flags\n" |
| 410 |
" srl %%o0, 24, %0\n" |
| 411 |
" stb %%o1, [%1 + 1]\n" |
| 412 |
" bl,a .+8\n" |
| 413 |
" or %%o1, 0x08, %%o1 ! N flag\n" |
| 414 |
" bz,a .+8\n" |
| 415 |
" or %%o1, 0x04, %%o1 ! Z flag\n" |
| 416 |
" bvs,a .+8\n" |
| 417 |
" or %%o1, 0x02, %%o1 ! V flag\n" |
| 418 |
" stb %%o1, [%1]\n" |
| 419 |
: "=&r" (value) |
| 420 |
: "r" (flags), "r" (dst), "r" (src) |
| 421 |
: "cc", "o0", "o1" |
| 422 |
); |
| 423 |
return value; |
| 424 |
} |
| 425 |
|
| 426 |
static inline uae_u32 sparc_v8_flag_add_16(flag_struct *flags, uae_u32 src, uae_u32 dst) |
| 427 |
{ |
| 428 |
uae_u32 value; |
| 429 |
__asm__ ("\n" |
| 430 |
" sll %2, 16, %%o0\n" |
| 431 |
" sll %3, 16, %%o1\n" |
| 432 |
" addcc %%o0, %%o1, %%o0\n" |
| 433 |
" addx %%g0, %%g0, %%o1 ! X,C flags\n" |
| 434 |
" srl %%o0, 16, %0\n" |
| 435 |
" stb %%o1, [%1 + 1]\n" |
| 436 |
" bl,a .+8\n" |
| 437 |
" or %%o1, 0x08, %%o1 ! N flag\n" |
| 438 |
" bz,a .+8\n" |
| 439 |
" or %%o1, 0x04, %%o1 ! Z flag\n" |
| 440 |
" bvs,a .+8\n" |
| 441 |
" or %%o1, 0x02, %%o1 ! V flag\n" |
| 442 |
" stb %%o1, [%1]\n" |
| 443 |
: "=&r" (value) |
| 444 |
: "r" (flags), "r" (dst), "r" (src) |
| 445 |
: "cc", "o0", "o1" |
| 446 |
); |
| 447 |
return value; |
| 448 |
} |
| 449 |
|
| 450 |
static inline uae_u32 sparc_v8_flag_add_32(flag_struct *flags, uae_u32 src, uae_u32 dst) |
| 451 |
{ |
| 452 |
uae_u32 value; |
| 453 |
__asm__ ("\n" |
| 454 |
" addcc %2, %3, %0\n" |
| 455 |
" addx %%g0, %%g0, %%o0 ! X,C flags\n" |
| 456 |
" stb %%o0, [%1 + 1]\n" |
| 457 |
" bl,a .+8\n" |
| 458 |
" or %%o0, 0x08, %%o0 ! N flag\n" |
| 459 |
" bz,a .+8\n" |
| 460 |
" or %%o0, 0x04, %%o0 ! Z flag\n" |
| 461 |
" bvs,a .+8\n" |
| 462 |
" or %%o0, 0x02, %%o0 ! V flag\n" |
| 463 |
" stb %%o0, [%1]\n" |
| 464 |
: "=&r" (value) |
| 465 |
: "r" (flags), "r" (dst), "r" (src) |
| 466 |
: "cc", "o0" |
| 467 |
); |
| 468 |
return value; |
| 469 |
} |
| 470 |
|
| 471 |
static inline uae_u32 sparc_v8_flag_sub_8(flag_struct *flags, uae_u32 src, uae_u32 dst) |
| 472 |
{ |
| 473 |
uae_u32 value; |
| 474 |
__asm__ ("\n" |
| 475 |
" sll %2, 24, %%o0\n" |
| 476 |
" sll %3, 24, %%o1\n" |
| 477 |
" subcc %%o0, %%o1, %%o0\n" |
| 478 |
" addx %%g0, %%g0, %%o1 ! X,C flags\n" |
| 479 |
" srl %%o0, 24, %0\n" |
| 480 |
" stb %%o1, [%1 + 1]\n" |
| 481 |
" bl,a .+8\n" |
| 482 |
" or %%o1, 0x08, %%o1 ! N flag\n" |
| 483 |
" bz,a .+8\n" |
| 484 |
" or %%o1, 0x04, %%o1 ! Z flag\n" |
| 485 |
" bvs,a .+8\n" |
| 486 |
" or %%o1, 0x02, %%o1 ! V flag\n" |
| 487 |
" stb %%o1, [%1]\n" |
| 488 |
: "=&r" (value) |
| 489 |
: "r" (flags), "r" (dst), "r" (src) |
| 490 |
: "cc", "o0", "o1" |
| 491 |
); |
| 492 |
return value; |
| 493 |
} |
| 494 |
|
| 495 |
static inline uae_u32 sparc_v8_flag_sub_16(flag_struct *flags, uae_u32 src, uae_u32 dst) |
| 496 |
{ |
| 497 |
uae_u32 value; |
| 498 |
__asm__ ("\n" |
| 499 |
" sll %2, 16, %%o0\n" |
| 500 |
" sll %3, 16, %%o1\n" |
| 501 |
" subcc %%o0, %%o1, %%o0\n" |
| 502 |
" addx %%g0, %%g0, %%o1 ! X,C flags\n" |
| 503 |
" srl %%o0, 16, %0\n" |
| 504 |
" stb %%o1, [%1 + 1]\n" |
| 505 |
" bl,a .+8\n" |
| 506 |
" or %%o1, 0x08, %%o1 ! N flag\n" |
| 507 |
" bz,a .+8\n" |
| 508 |
" or %%o1, 0x04, %%o1 ! Z flag\n" |
| 509 |
" bvs,a .+8\n" |
| 510 |
" or %%o1, 0x02, %%o1 ! V flag\n" |
| 511 |
" stb %%o1, [%1]\n" |
| 512 |
: "=&r" (value) |
| 513 |
: "r" (flags), "r" (dst), "r" (src) |
| 514 |
: "cc", "o0", "o1" |
| 515 |
); |
| 516 |
return value; |
| 517 |
} |
| 518 |
|
| 519 |
static inline uae_u32 sparc_v8_flag_sub_32(flag_struct *flags, uae_u32 src, uae_u32 dst) |
| 520 |
{ |
| 521 |
uae_u32 value; |
| 522 |
__asm__ ("\n" |
| 523 |
" subcc %2, %3, %0\n" |
| 524 |
" addx %%g0, %%g0, %%o0 ! X,C flags\n" |
| 525 |
" stb %%o0, [%1 + 1]\n" |
| 526 |
" bl,a .+8\n" |
| 527 |
" or %%o0, 0x08, %%o0 ! N flag\n" |
| 528 |
" bz,a .+8\n" |
| 529 |
" or %%o0, 0x04, %%o0 ! Z flag\n" |
| 530 |
" bvs,a .+8\n" |
| 531 |
" or %%o0, 0x02, %%o0 ! V flag\n" |
| 532 |
" stb %%o0, [%1]\n" |
| 533 |
: "=&r" (value) |
| 534 |
: "r" (flags), "r" (dst), "r" (src) |
| 535 |
: "cc", "o0" |
| 536 |
); |
| 537 |
return value; |
| 538 |
} |
| 539 |
|
| 540 |
static inline void sparc_v8_flag_cmp_8(flag_struct *flags, uae_u32 src, uae_u32 dst) |
| 541 |
{ |
| 542 |
__asm__ ("\n" |
| 543 |
" sll %1, 24, %%o0\n" |
| 544 |
" sll %2, 24, %%o1\n" |
| 545 |
" subcc %%o0, %%o1, %%g0\n" |
| 546 |
" addx %%g0, %%g0, %%o0 ! C flag\n" |
| 547 |
" bl,a .+8\n" |
| 548 |
" or %%o0, 0x08, %%o0 ! N flag\n" |
| 549 |
" bz,a .+8\n" |
| 550 |
" or %%o0, 0x04, %%o0 ! Z flag\n" |
| 551 |
" bvs,a .+8\n" |
| 552 |
" or %%o0, 0x02, %%o0 ! V flag\n" |
| 553 |
" stb %%o0, [%0]\n" |
| 554 |
: /* no outputs */ |
| 555 |
: "r" (flags), "r" (dst), "r" (src) |
| 556 |
: "cc", "o0", "o1" |
| 557 |
); |
| 558 |
} |
| 559 |
|
| 560 |
static inline void sparc_v8_flag_cmp_16(flag_struct *flags, uae_u32 src, uae_u32 dst) |
| 561 |
{ |
| 562 |
__asm__ ("\n" |
| 563 |
" sll %1, 16, %%o0\n" |
| 564 |
" sll %2, 16, %%o1\n" |
| 565 |
" subcc %%o0, %%o1, %%g0\n" |
| 566 |
" addx %%g0, %%g0, %%o0 ! C flag\n" |
| 567 |
" bl,a .+8\n" |
| 568 |
" or %%o0, 0x08, %%o0 ! N flag\n" |
| 569 |
" bz,a .+8\n" |
| 570 |
" or %%o0, 0x04, %%o0 ! Z flag\n" |
| 571 |
" bvs,a .+8\n" |
| 572 |
" or %%o0, 0x02, %%o0 ! V flag\n" |
| 573 |
" stb %%o0, [%0]\n" |
| 574 |
: /* no outputs */ |
| 575 |
: "r" (flags), "r" (dst), "r" (src) |
| 576 |
: "cc", "o0", "o1" |
| 577 |
); |
| 578 |
} |
| 579 |
|
| 580 |
static inline void sparc_v8_flag_cmp_32(flag_struct *flags, uae_u32 src, uae_u32 dst) |
| 581 |
{ |
| 582 |
__asm__ ("\n" |
| 583 |
" subcc %1, %2, %%o1\n" |
| 584 |
" srl %%o1, 31, %%o0\n" |
| 585 |
" sll %%o0, 3, %%o0\n" |
| 586 |
" addx %%o0, %%g0, %%o0\n" |
| 587 |
" bvs,a .+8\n" |
| 588 |
" or %%o0, 0x02, %%o0\n" |
| 589 |
" subcc %%g0, %%o1, %%g0\n" |
| 590 |
" addx %%g0, 7, %%o1\n" |
| 591 |
" and %%o1, 0x04, %%o1\n" |
| 592 |
" or %%o0, %%o1, %%o0\n" |
| 593 |
" stb %%o0, [%0]\n" |
| 594 |
: /* no outputs */ |
| 595 |
: "r" (flags), "r" (dst), "r" (src) |
| 596 |
: "cc", "o0", "o1" |
| 597 |
); |
| 598 |
} |
| 599 |
|
| 600 |
static inline uae_u32 sparc_v8_flag_addx_8(flag_struct *flags, uae_u32 src, uae_u32 dst) |
| 601 |
{ |
| 602 |
uae_u32 value; |
| 603 |
__asm__ ("\n" |
| 604 |
" ldub [%1 + 1], %%o1 ! Get the X Flag\n" |
| 605 |
" subcc %%g0, %%o1, %%g0 ! Set the SPARC carry flag, if X set\n" |
| 606 |
" addxcc %2, %3, %0\n" |
| 607 |
: "=&r" (value) |
| 608 |
: "r" (flags), "r" (dst), "r" (src) |
| 609 |
: "cc", "o0", "o1" |
| 610 |
); |
| 611 |
return value; |
| 612 |
} |
| 613 |
|
| 614 |
#if 0 |
| 615 |
VERY SLOW... |
| 616 |
static inline uae_u32 sparc_v8_flag_addx_8(flag_struct *flags, uae_u32 src, uae_u32 dst) |
| 617 |
{ |
| 618 |
uae_u32 value; |
| 619 |
__asm__ ("\n" |
| 620 |
" sll %2, 24, %%o0\n" |
| 621 |
" sll %3, 24, %%o1\n" |
| 622 |
" addcc %%o0, %%o1, %%o0\n" |
| 623 |
" addx %%g0, %%g0, %%o1 ! X,C flags\n" |
| 624 |
" bvs,a .+8\n" |
| 625 |
" or %%o1, 0x02, %%o1 ! V flag\n" |
| 626 |
" ldub [%1 + 1], %%o2\n" |
| 627 |
" subcc %%g0, %%o2, %%g0\n" |
| 628 |
" addx %%g0, %%g0, %%o2\n" |
| 629 |
" sll %%o2, 24, %%o2\n" |
| 630 |
" addcc %%o0, %%o2, %%o0\n" |
| 631 |
" srl %%o0, 24, %0\n" |
| 632 |
" addx %%g0, %%g0, %%o2\n" |
| 633 |
" or %%o1, %%o2, %%o1 ! update X,C flags\n" |
| 634 |
" bl,a .+8\n" |
| 635 |
" or %%o1, 0x08, %%o1 ! N flag\n" |
| 636 |
" ldub [%1], %%o0 ! retreive the old NZVC flags (XXX)\n" |
| 637 |
" bvs,a .+8\n" |
| 638 |
" or %%o1, 0x02, %%o1 ! update V flag\n" |
| 639 |
" and %%o0, 0x04, %%o0 ! (XXX) but keep only Z flag\n" |
| 640 |
" and %%o1, 1, %%o2 ! keep C flag in %%o2\n" |
| 641 |
" bnz,a .+8\n" |
| 642 |
" or %%g0, %%g0, %%o0 ! Z flag cleared if non-zero result\n" |
| 643 |
" stb %%o2, [%1 + 1] ! store the X flag\n" |
| 644 |
" or %%o1, %%o0, %%o1\n" |
| 645 |
" stb %%o1, [%1]\n" |
| 646 |
: "=&r" (value) |
| 647 |
: "r" (flags), "r" (dst), "r" (src) |
| 648 |
: "cc", "o0", "o1", "o2" |
| 649 |
); |
| 650 |
return value; |
| 651 |
} |
| 652 |
#endif |
| 653 |
|
| 654 |
static inline uae_u32 sparc_v8_flag_addx_32(flag_struct *flags, uae_u32 src, uae_u32 dst) |
| 655 |
{ |
| 656 |
uae_u32 value; |
| 657 |
__asm__ ("\n" |
| 658 |
" ldub [%1 + 1], %%o0 ! Get the X Flag\n" |
| 659 |
" subcc %%g0, %%o0, %%g0 ! Set the SPARC carry flag, if X set\n" |
| 660 |
" addxcc %2, %3, %0\n" |
| 661 |
" ldub [%1], %%o0 ! retreive the old NZVC flags\n" |
| 662 |
" and %%o0, 0x04, %%o0 ! but keep only Z flag\n" |
| 663 |
" addx %%o0, %%g0, %%o0 ! X,C flags\n" |
| 664 |
" bl,a .+8\n" |
| 665 |
" or %%o0, 0x08, %%o0 ! N flag\n" |
| 666 |
" bvs,a .+8\n" |
| 667 |
" or %%o0, 0x02, %%o0 ! V flag\n" |
| 668 |
" bnz,a .+8\n" |
| 669 |
" and %%o0, 0x0B, %%o0 ! Z flag cleared if result is non-zero\n" |
| 670 |
" stb %%o0, [%1]\n" |
| 671 |
" stb %%o0, [%1 + 1]\n" |
| 672 |
: "=&r" (value) |
| 673 |
: "r" (flags), "r" (dst), "r" (src) |
| 674 |
: "cc", "o0" |
| 675 |
); |
| 676 |
return value; |
| 677 |
} |
| 678 |
|
| 679 |
#endif /* SPARC_V8_ASSEMBLY */ |
| 680 |
|
| 681 |
#ifdef SPARC_V9_ASSEMBLY |
| 682 |
|
| 683 |
static inline uae_u32 sparc_v9_flag_add_8(flag_struct *flags, uae_u32 src, uae_u32 dst) |
| 684 |
{ |
| 685 |
uae_u32 value; |
| 686 |
__asm__ ("\n" |
| 687 |
" sll %2, 24, %%o0\n" |
| 688 |
" sll %3, 24, %%o1\n" |
| 689 |
" addcc %%o0, %%o1, %%o0\n" |
| 690 |
" rd %%ccr, %%o1\n" |
| 691 |
" srl %%o0, 24, %0\n" |
| 692 |
" stb %%o1, [%1]\n" |
| 693 |
" stb %%o1, [%1+1]\n" |
| 694 |
: "=&r" (value) |
| 695 |
: "r" (flags), "r" (dst), "r" (src) |
| 696 |
: "cc", "o0", "o1" |
| 697 |
); |
| 698 |
return value; |
| 699 |
} |
| 700 |
|
| 701 |
static inline uae_u32 sparc_v9_flag_add_16(flag_struct *flags, uae_u32 src, uae_u32 dst) |
| 702 |
{ |
| 703 |
uae_u32 value; |
| 704 |
__asm__ ("\n" |
| 705 |
" sll %2, 16, %%o0\n" |
| 706 |
" sll %3, 16, %%o1\n" |
| 707 |
" addcc %%o0, %%o1, %%o0\n" |
| 708 |
" rd %%ccr, %%o1\n" |
| 709 |
" srl %%o0, 16, %0\n" |
| 710 |
" stb %%o1, [%1]\n" |
| 711 |
" stb %%o1, [%1+1]\n" |
| 712 |
: "=&r" (value) |
| 713 |
: "r" (flags), "r" (dst), "r" (src) |
| 714 |
: "cc", "o0", "o1" |
| 715 |
); |
| 716 |
return value; |
| 717 |
} |
| 718 |
|
| 719 |
static inline uae_u32 sparc_v9_flag_add_32(flag_struct *flags, uae_u32 src, uae_u32 dst) |
| 720 |
{ |
| 721 |
uae_u32 value; |
| 722 |
__asm__ ("\n" |
| 723 |
" addcc %2, %3, %0\n" |
| 724 |
" rd %%ccr, %%o0\n" |
| 725 |
" stb %%o0, [%1]\n" |
| 726 |
" stb %%o0, [%1+1]\n" |
| 727 |
: "=&r" (value) |
| 728 |
: "r" (flags), "r" (dst), "r" (src) |
| 729 |
: "cc", "o0" |
| 730 |
); |
| 731 |
return value; |
| 732 |
} |
| 733 |
|
| 734 |
static inline uae_u32 sparc_v9_flag_sub_8(flag_struct *flags, uae_u32 src, uae_u32 dst) |
| 735 |
{ |
| 736 |
uae_u32 value; |
| 737 |
__asm__ ("\n" |
| 738 |
" sll %2, 24, %%o0\n" |
| 739 |
" sll %3, 24, %%o1\n" |
| 740 |
" subcc %%o0, %%o1, %%o0\n" |
| 741 |
" rd %%ccr, %%o1\n" |
| 742 |
" srl %%o0, 24, %0\n" |
| 743 |
" stb %%o1, [%1]\n" |
| 744 |
" stb %%o1, [%1+1]\n" |
| 745 |
: "=&r" (value) |
| 746 |
: "r" (flags), "r" (dst), "r" (src) |
| 747 |
: "cc", "o0", "o1" |
| 748 |
); |
| 749 |
return value; |
| 750 |
} |
| 751 |
|
| 752 |
static inline uae_u32 sparc_v9_flag_sub_16(flag_struct *flags, uae_u32 src, uae_u32 dst) |
| 753 |
{ |
| 754 |
uae_u32 value; |
| 755 |
__asm__ ("\n" |
| 756 |
" sll %2, 16, %%o0\n" |
| 757 |
" sll %3, 16, %%o1\n" |
| 758 |
" subcc %%o0, %%o1, %%o0\n" |
| 759 |
" rd %%ccr, %%o1\n" |
| 760 |
" srl %%o0, 16, %0\n" |
| 761 |
" stb %%o1, [%1]\n" |
| 762 |
" stb %%o1, [%1+1]\n" |
| 763 |
: "=&r" (value) |
| 764 |
: "r" (flags), "r" (dst), "r" (src) |
| 765 |
: "cc", "o0", "o1" |
| 766 |
); |
| 767 |
return value; |
| 768 |
} |
| 769 |
|
| 770 |
static inline uae_u32 sparc_v9_flag_sub_32(flag_struct *flags, uae_u32 src, uae_u32 dst) |
| 771 |
{ |
| 772 |
uae_u32 value; |
| 773 |
__asm__ ("\n" |
| 774 |
" subcc %2, %3, %0\n" |
| 775 |
" rd %%ccr, %%o0\n" |
| 776 |
" stb %%o0, [%1]\n" |
| 777 |
" stb %%o0, [%1+1]\n" |
| 778 |
: "=&r" (value) |
| 779 |
: "r" (flags), "r" (dst), "r" (src) |
| 780 |
: "cc", "o0" |
| 781 |
); |
| 782 |
return value; |
| 783 |
} |
| 784 |
|
| 785 |
static inline void sparc_v9_flag_cmp_8(flag_struct *flags, uae_u32 src, uae_u32 dst) |
| 786 |
{ |
| 787 |
__asm__ ("\n" |
| 788 |
" sll %1, 24, %%o0\n" |
| 789 |
" sll %2, 24, %%o1\n" |
| 790 |
" subcc %%o0, %%o1, %%g0\n" |
| 791 |
" rd %%ccr, %%o0\n" |
| 792 |
" stb %%o0, [%0]\n" |
| 793 |
: /* no outputs */ |
| 794 |
: "r" (flags), "r" (dst), "r" (src) |
| 795 |
: "cc", "o0", "o1" |
| 796 |
); |
| 797 |
} |
| 798 |
|
| 799 |
static inline void sparc_v9_flag_cmp_16(flag_struct *flags, uae_u32 src, uae_u32 dst) |
| 800 |
{ |
| 801 |
__asm__ ("\n" |
| 802 |
" sll %1, 16, %%o0\n" |
| 803 |
" sll %2, 16, %%o1\n" |
| 804 |
" subcc %%o0, %%o1, %%g0\n" |
| 805 |
" rd %%ccr, %%o0\n" |
| 806 |
" stb %%o0, [%0]\n" |
| 807 |
: /* no outputs */ |
| 808 |
: "r" (flags), "r" (dst), "r" (src) |
| 809 |
: "cc", "o0", "o1" |
| 810 |
); |
| 811 |
} |
| 812 |
|
| 813 |
static inline void sparc_v9_flag_cmp_32(flag_struct *flags, uae_u32 src, uae_u32 dst) |
| 814 |
{ |
| 815 |
__asm__ ("\n" |
| 816 |
" subcc %1, %2, %%g0\n" |
| 817 |
#if 0 |
| 818 |
" subcc %1, %2, %%o1\n" |
| 819 |
" srl %%o1, 31, %%o0\n" |
| 820 |
" sll %%o0, 3, %%o0\n" |
| 821 |
" addx %%o0, %%g0, %%o0\n" |
| 822 |
" bvs,a .+8\n" |
| 823 |
" or %%o0, 0x02, %%o0\n" |
| 824 |
" subcc %%g0, %%o1, %%g0\n" |
| 825 |
" addx %%g0, 7, %%o1\n" |
| 826 |
" and %%o1, 0x04, %%o1\n" |
| 827 |
" or %%o0, %%o1, %%o0\n" |
| 828 |
#endif |
| 829 |
#if 0 |
| 830 |
" subcc %1, %2, %%o1\n" |
| 831 |
" srl %%o1, 31, %%o0\n" |
| 832 |
" sll %%o0, 3, %%o0\n" |
| 833 |
" addx %%o0, %%g0, %%o0\n" |
| 834 |
" bvs,pt,a .+8\n" |
| 835 |
" or %%o0, 0x02, %%o0\n" |
| 836 |
" subcc %%g0, %%o1, %%g0\n" |
| 837 |
" addx %%g0, 7, %%o1\n" |
| 838 |
" and %%o1, 0x04, %%o1\n" |
| 839 |
" or %%o0, %%o1, %%o0\n" |
| 840 |
" stb %%o0, [%0]\n" |
| 841 |
#endif |
| 842 |
" rd %%ccr, %%o0\n" |
| 843 |
" stb %%o0, [%0]\n" |
| 844 |
: /* no outputs */ |
| 845 |
: "r" (flags), "r" (dst), "r" (src) |
| 846 |
: "cc", "o0", "o1" |
| 847 |
); |
| 848 |
} |
| 849 |
|
| 850 |
#if 1 |
| 851 |
static inline void sparc_v9_flag_test_8(flag_struct *flags, uae_u32 val) |
| 852 |
{ |
| 853 |
__asm__ ("\n" |
| 854 |
" sll %1, 24, %%o0\n" |
| 855 |
" subcc %%o0, %%g0, %%g0\n" |
| 856 |
" rd %%ccr, %%o0\n" |
| 857 |
" stb %%o0, [%0]\n" |
| 858 |
: /* no outputs */ |
| 859 |
: "r" (flags), "r" (val) |
| 860 |
: "cc", "o0" |
| 861 |
); |
| 862 |
} |
| 863 |
|
| 864 |
static inline void sparc_v9_flag_test_16(flag_struct *flags, uae_u32 val) |
| 865 |
{ |
| 866 |
__asm__ ("\n" |
| 867 |
" sll %1, 16, %%o0\n" |
| 868 |
" subcc %%o0, %%g0, %%g0\n" |
| 869 |
" rd %%ccr, %%o0\n" |
| 870 |
" stb %%o0, [%0]\n" |
| 871 |
: /* no outputs */ |
| 872 |
: "r" (flags), "r" (val) |
| 873 |
: "cc", "o0" |
| 874 |
); |
| 875 |
} |
| 876 |
|
| 877 |
static inline void sparc_v9_flag_test_32(flag_struct *flags, uae_u32 val) |
| 878 |
{ |
| 879 |
__asm__ ("\n" |
| 880 |
" subcc %1, %%g0, %%g0\n" |
| 881 |
" rd %%ccr, %%o0\n" |
| 882 |
" stb %%o0, [%0]\n" |
| 883 |
: /* no outputs */ |
| 884 |
: "r" (flags), "r" (val) |
| 885 |
: "cc", "o0" |
| 886 |
); |
| 887 |
} |
| 888 |
#else |
| 889 |
static inline void sparc_v9_flag_test_8(flag_struct *flags, uae_u32 val) |
| 890 |
{ |
| 891 |
__asm__ ("\n" |
| 892 |
" sll %1, 24, %%o0\n" |
| 893 |
" subcc %%o0, %%g0, %%o1\n" |
| 894 |
" srl %%o1, 31, %%o0\n" |
| 895 |
" sll %%o0, 3, %%o0\n" |
| 896 |
" addx %%o0, %%g0, %%o0\n" |
| 897 |
" bvs,a .+8\n" |
| 898 |
" or %%o0, 0x02, %%o0\n" |
| 899 |
" subcc %%g0, %%o1, %%g0\n" |
| 900 |
" addx %%g0, 7, %%o1\n" |
| 901 |
" and %%o1, 0x04, %%o1\n" |
| 902 |
" or %%o0, %%o1, %%o0\n" |
| 903 |
" stb %%o0, [%0]\n" |
| 904 |
: /* no outputs */ |
| 905 |
: "r" (flags), "r" (val) |
| 906 |
: "cc", "o0", "o1" |
| 907 |
); |
| 908 |
} |
| 909 |
|
| 910 |
static inline void sparc_v9_flag_test_16(flag_struct *flags, uae_u32 val) |
| 911 |
{ |
| 912 |
__asm__ ("\n" |
| 913 |
" sll %1, 16, %%o0\n" |
| 914 |
" subcc %%o0, %%g0, %%o1\n" |
| 915 |
" srl %%o1, 31, %%o0\n" |
| 916 |
" sll %%o0, 3, %%o0\n" |
| 917 |
" addx %%o0, %%g0, %%o0\n" |
| 918 |
" bvs,a .+8\n" |
| 919 |
" or %%o0, 0x02, %%o0\n" |
| 920 |
" subcc %%g0, %%o1, %%g0\n" |
| 921 |
" addx %%g0, 7, %%o1\n" |
| 922 |
" and %%o1, 0x04, %%o1\n" |
| 923 |
" or %%o0, %%o1, %%o0\n" |
| 924 |
" stb %%o0, [%0]\n" |
| 925 |
: /* no outputs */ |
| 926 |
: "r" (flags), "r" (val) |
| 927 |
: "cc", "o0", "o1" |
| 928 |
); |
| 929 |
} |
| 930 |
|
| 931 |
static inline void sparc_v9_flag_test_32(flag_struct *flags, uae_u32 val) |
| 932 |
{ |
| 933 |
__asm__ ("\n" |
| 934 |
" subcc %1, %%g0, %%o1\n" |
| 935 |
" srl %%o1, 31, %%o0\n" |
| 936 |
" sll %%o0, 3, %%o0\n" |
| 937 |
" addx %%o0, %%g0, %%o0\n" |
| 938 |
" bvs,a .+8\n" |
| 939 |
" or %%o0, 0x02, %%o0\n" |
| 940 |
" subcc %%g0, %%o1, %%g0\n" |
| 941 |
" addx %%g0, 7, %%o1\n" |
| 942 |
" and %%o1, 0x04, %%o1\n" |
| 943 |
" or %%o0, %%o1, %%o0\n" |
| 944 |
" stb %%o0, [%0]\n" |
| 945 |
: /* no outputs */ |
| 946 |
: "r" (flags), "r" (val) |
| 947 |
: "cc", "o0", "o1" |
| 948 |
); |
| 949 |
} |
| 950 |
#endif |
| 951 |
|
| 952 |
static inline uae_u32 sparc_v9_flag_addx_8(flag_struct *flags, uae_u32 src, uae_u32 dst) |
| 953 |
{ |
| 954 |
uae_u32 value; |
| 955 |
__asm__ ("\n" |
| 956 |
" ldub [%1 + 1], %%o1 ! Get the X Flag\n" |
| 957 |
" subcc %%g0, %%o1, %%g0 ! Set the SPARC carry flag, if X set\n" |
| 958 |
" addxcc %2, %3, %0\n" |
| 959 |
: "=&r" (value) |
| 960 |
: "r" (flags), "r" (dst), "r" (src) |
| 961 |
: "cc", "o0", "o1" |
| 962 |
); |
| 963 |
return value; |
| 964 |
} |
| 965 |
|
| 966 |
static inline uae_u32 sparc_v9_flag_addx_32(flag_struct *flags, uae_u32 src, uae_u32 dst) |
| 967 |
{ |
| 968 |
uae_u32 value; |
| 969 |
__asm__ ("\n" |
| 970 |
" ldub [%1 + 1], %%o0 ! Get the X Flag\n" |
| 971 |
" subcc %%g0, %%o0, %%g0 ! Set the SPARC carry flag, if X set\n" |
| 972 |
" addxcc %2, %3, %0\n" |
| 973 |
" ldub [%1], %%o0 ! retreive the old NZVC flags\n" |
| 974 |
" and %%o0, 0x04, %%o0 ! but keep only Z flag\n" |
| 975 |
" addx %%o0, %%g0, %%o0 ! X,C flags\n" |
| 976 |
" bl,a .+8\n" |
| 977 |
" or %%o0, 0x08, %%o0 ! N flag\n" |
| 978 |
" bvs,a .+8\n" |
| 979 |
" or %%o0, 0x02, %%o0 ! V flag\n" |
| 980 |
" bnz,a .+8\n" |
| 981 |
" and %%o0, 0x0B, %%o0 ! Z flag cleared if result is non-zero\n" |
| 982 |
" stb %%o0, [%1]\n" |
| 983 |
" stb %%o0, [%1 + 1]\n" |
| 984 |
: "=&r" (value) |
| 985 |
: "r" (flags), "r" (dst), "r" (src) |
| 986 |
: "cc", "o0" |
| 987 |
); |
| 988 |
return value; |
| 989 |
} |
| 990 |
|
| 991 |
#endif /* SPARC_V9_ASSEMBLY */ |
| 992 |
|
| 993 |
#endif |
| 994 |
|
| 995 |
#else |
| 996 |
|
| 997 |
struct flag_struct { |
| 998 |
unsigned int c; |
| 999 |
unsigned int z; |
| 1000 |
unsigned int n; |
| 1001 |
unsigned int v; |
| 1002 |
unsigned int x; |
| 1003 |
}; |
| 1004 |
|
| 1005 |
extern struct flag_struct regflags; |
| 1006 |
|
| 1007 |
#define ZFLG (regflags.z) |
| 1008 |
#define NFLG (regflags.n) |
| 1009 |
#define CFLG (regflags.c) |
| 1010 |
#define VFLG (regflags.v) |
| 1011 |
#define XFLG (regflags.x) |
| 1012 |
|
| 1013 |
#define SET_CFLG(x) (CFLG = (x)) |
| 1014 |
#define SET_NFLG(x) (NFLG = (x)) |
| 1015 |
#define SET_VFLG(x) (VFLG = (x)) |
| 1016 |
#define SET_ZFLG(x) (ZFLG = (x)) |
| 1017 |
#define SET_XFLG(x) (XFLG = (x)) |
| 1018 |
|
| 1019 |
#define GET_CFLG CFLG |
| 1020 |
#define GET_NFLG NFLG |
| 1021 |
#define GET_VFLG VFLG |
| 1022 |
#define GET_ZFLG ZFLG |
| 1023 |
#define GET_XFLG XFLG |
| 1024 |
|
| 1025 |
#define CLEAR_CZNV do { \ |
| 1026 |
SET_CFLG (0); \ |
| 1027 |
SET_ZFLG (0); \ |
| 1028 |
SET_NFLG (0); \ |
| 1029 |
SET_VFLG (0); \ |
| 1030 |
} while (0) |
| 1031 |
|
| 1032 |
#define COPY_CARRY (SET_XFLG (GET_CFLG)) |
| 1033 |
|
| 1034 |
static __inline__ int cctrue(const int cc) |
| 1035 |
{ |
| 1036 |
switch(cc){ |
| 1037 |
case 0: return 1; /* T */ |
| 1038 |
case 1: return 0; /* F */ |
| 1039 |
case 2: return !CFLG && !ZFLG; /* HI */ |
| 1040 |
case 3: return CFLG || ZFLG; /* LS */ |
| 1041 |
case 4: return !CFLG; /* CC */ |
| 1042 |
case 5: return CFLG; /* CS */ |
| 1043 |
case 6: return !ZFLG; /* NE */ |
| 1044 |
case 7: return ZFLG; /* EQ */ |
| 1045 |
case 8: return !VFLG; /* VC */ |
| 1046 |
case 9: return VFLG; /* VS */ |
| 1047 |
case 10:return !NFLG; /* PL */ |
| 1048 |
case 11:return NFLG; /* MI */ |
| 1049 |
case 12:return NFLG == VFLG; /* GE */ |
| 1050 |
case 13:return NFLG != VFLG; /* LT */ |
| 1051 |
case 14:return !ZFLG && (NFLG == VFLG); /* GT */ |
| 1052 |
case 15:return ZFLG || (NFLG != VFLG); /* LE */ |
| 1053 |
} |
| 1054 |
return 0; |
| 1055 |
} |
| 1056 |
|
| 1057 |
#endif /* OPTIMIZED_FLAGS */ |
| 1058 |
|
| 1059 |
#endif /* M68K_FLAGS_H */ |
