| 1 | // 187 blocks, 12072 bytes |
| 2 | // 14 IRAM blocks |
| 3 | |
| 4 | #include "../../PicoInt.h" |
| 5 | #include "compiler.h" |
| 6 | |
| 7 | static unsigned int *block_table[0x5090/2]; |
| 8 | static unsigned int *block_table_iram[15][0x800/2]; |
| 9 | static unsigned int *tcache_ptr = NULL; |
| 10 | |
| 11 | static int had_jump = 0; |
| 12 | static int nblocks = 0; |
| 13 | static int iram_context = 0; |
| 14 | |
| 15 | #ifndef ARM |
| 16 | #define DUMP_BLOCK 0x84a |
| 17 | unsigned int tcache[512*1024]; |
| 18 | void regfile_load(void){} |
| 19 | void regfile_store(void){} |
| 20 | #endif |
| 21 | |
| 22 | #define EMBED_INTERPRETER |
| 23 | #define ssp1601_reset ssp1601_reset_local |
| 24 | #define ssp1601_run ssp1601_run_local |
| 25 | |
| 26 | #define GET_PC() rPC |
| 27 | #define GET_PPC_OFFS() (GET_PC()*2 - 2) |
| 28 | #define SET_PC(d) { had_jump = 1; rPC = d; } /* must return to dispatcher after this */ |
| 29 | //#define GET_PC() (PC - (unsigned short *)svp->iram_rom) |
| 30 | //#define GET_PPC_OFFS() ((unsigned int)PC - (unsigned int)svp->iram_rom - 2) |
| 31 | //#define SET_PC(d) PC = (unsigned short *)svp->iram_rom + d |
| 32 | |
| 33 | #include "ssp16.c" |
| 34 | #include "gen_arm.c" |
| 35 | |
| 36 | // ----------------------------------------------------- |
| 37 | |
| 38 | // ld d, s |
| 39 | static void op00(unsigned int op, unsigned int imm) |
| 40 | { |
| 41 | unsigned int tmpv; |
| 42 | PC = ((unsigned short *)(void *)&op) + 1; /* FIXME: needed for interpreter */ |
| 43 | if (op == 0) return; // nop |
| 44 | if (op == ((SSP_A<<4)|SSP_P)) { // A <- P |
| 45 | // not sure. MAME claims that only hi word is transfered. |
| 46 | read_P(); // update P |
| 47 | rA32 = rP.v; |
| 48 | } |
| 49 | else |
| 50 | { |
| 51 | tmpv = REG_READ(op & 0x0f); |
| 52 | REG_WRITE((op & 0xf0) >> 4, tmpv); |
| 53 | } |
| 54 | } |
| 55 | |
| 56 | // ld d, (ri) |
| 57 | static void op01(unsigned int op, unsigned int imm) |
| 58 | { |
| 59 | unsigned int tmpv; |
| 60 | tmpv = ptr1_read(op); REG_WRITE((op & 0xf0) >> 4, tmpv); |
| 61 | } |
| 62 | |
| 63 | // ld (ri), s |
| 64 | static void op02(unsigned int op, unsigned int imm) |
| 65 | { |
| 66 | unsigned int tmpv; |
| 67 | tmpv = REG_READ((op & 0xf0) >> 4); ptr1_write(op, tmpv); |
| 68 | } |
| 69 | |
| 70 | // ldi d, imm |
| 71 | static void op04(unsigned int op, unsigned int imm) |
| 72 | { |
| 73 | REG_WRITE((op & 0xf0) >> 4, imm); |
| 74 | } |
| 75 | |
| 76 | // ld d, ((ri)) |
| 77 | static void op05(unsigned int op, unsigned int imm) |
| 78 | { |
| 79 | unsigned int tmpv; |
| 80 | tmpv = ptr2_read(op); REG_WRITE((op & 0xf0) >> 4, tmpv); |
| 81 | } |
| 82 | |
| 83 | // ldi (ri), imm |
| 84 | static void op06(unsigned int op, unsigned int imm) |
| 85 | { |
| 86 | ptr1_write(op, imm); |
| 87 | } |
| 88 | |
| 89 | // ld adr, a |
| 90 | static void op07(unsigned int op, unsigned int imm) |
| 91 | { |
| 92 | ssp->RAM[op & 0x1ff] = rA; |
| 93 | } |
| 94 | |
| 95 | // ld d, ri |
| 96 | static void op09(unsigned int op, unsigned int imm) |
| 97 | { |
| 98 | unsigned int tmpv; |
| 99 | tmpv = rIJ[(op&3)|((op>>6)&4)]; REG_WRITE((op & 0xf0) >> 4, tmpv); |
| 100 | } |
| 101 | |
| 102 | // ld ri, s |
| 103 | static void op0a(unsigned int op, unsigned int imm) |
| 104 | { |
| 105 | rIJ[(op&3)|((op>>6)&4)] = REG_READ((op & 0xf0) >> 4); |
| 106 | } |
| 107 | |
| 108 | // ldi ri, simm (also op0d op0e op0f) |
| 109 | static void op0c(unsigned int op, unsigned int imm) |
| 110 | { |
| 111 | rIJ[(op>>8)&7] = op; |
| 112 | } |
| 113 | |
| 114 | // call cond, addr |
| 115 | static void op24(unsigned int op, unsigned int imm) |
| 116 | { |
| 117 | int cond = 0; |
| 118 | do { |
| 119 | COND_CHECK |
| 120 | if (cond) { int new_PC = imm; write_STACK(GET_PC()); SET_PC(new_PC); } |
| 121 | } |
| 122 | while (0); |
| 123 | } |
| 124 | |
| 125 | // ld d, (a) |
| 126 | static void op25(unsigned int op, unsigned int imm) |
| 127 | { |
| 128 | unsigned int tmpv; |
| 129 | tmpv = ((unsigned short *)svp->iram_rom)[rA]; REG_WRITE((op & 0xf0) >> 4, tmpv); |
| 130 | } |
| 131 | |
| 132 | // bra cond, addr |
| 133 | static void op26(unsigned int op, unsigned int imm) |
| 134 | { |
| 135 | do |
| 136 | { |
| 137 | int cond = 0; |
| 138 | COND_CHECK |
| 139 | if (cond) SET_PC(imm); |
| 140 | } |
| 141 | while (0); |
| 142 | } |
| 143 | |
| 144 | // mod cond, op |
| 145 | static void op48(unsigned int op, unsigned int imm) |
| 146 | { |
| 147 | do |
| 148 | { |
| 149 | int cond = 0; |
| 150 | COND_CHECK |
| 151 | if (cond) { |
| 152 | switch (op & 7) { |
| 153 | case 2: rA32 = (signed int)rA32 >> 1; break; // shr (arithmetic) |
| 154 | case 3: rA32 <<= 1; break; // shl |
| 155 | case 6: rA32 = -(signed int)rA32; break; // neg |
| 156 | case 7: if ((int)rA32 < 0) rA32 = -(signed int)rA32; break; // abs |
| 157 | default: elprintf(EL_SVP|EL_ANOMALY, "ssp FIXME: unhandled mod %i @ %04x", |
| 158 | op&7, GET_PPC_OFFS()); |
| 159 | } |
| 160 | UPD_ACC_ZN // ? |
| 161 | } |
| 162 | } |
| 163 | while(0); |
| 164 | } |
| 165 | |
| 166 | // mpys? |
| 167 | static void op1b(unsigned int op, unsigned int imm) |
| 168 | { |
| 169 | read_P(); // update P |
| 170 | rA32 -= rP.v; // maybe only upper word? |
| 171 | UPD_ACC_ZN // there checking flags after this |
| 172 | rX = ptr1_read_(op&3, 0, (op<<1)&0x18); // ri (maybe rj?) |
| 173 | rY = ptr1_read_((op>>4)&3, 4, (op>>3)&0x18); // rj |
| 174 | } |
| 175 | |
| 176 | // mpya (rj), (ri), b |
| 177 | static void op4b(unsigned int op, unsigned int imm) |
| 178 | { |
| 179 | read_P(); // update P |
| 180 | rA32 += rP.v; // confirmed to be 32bit |
| 181 | UPD_ACC_ZN // ? |
| 182 | rX = ptr1_read_(op&3, 0, (op<<1)&0x18); // ri (maybe rj?) |
| 183 | rY = ptr1_read_((op>>4)&3, 4, (op>>3)&0x18); // rj |
| 184 | } |
| 185 | |
| 186 | // mld (rj), (ri), b |
| 187 | static void op5b(unsigned int op, unsigned int imm) |
| 188 | { |
| 189 | rA32 = 0; |
| 190 | rST &= 0x0fff; // ? |
| 191 | rX = ptr1_read_(op&3, 0, (op<<1)&0x18); // ri (maybe rj?) |
| 192 | rY = ptr1_read_((op>>4)&3, 4, (op>>3)&0x18); // rj |
| 193 | } |
| 194 | |
| 195 | // OP a, s |
| 196 | static void op10(unsigned int op, unsigned int imm) |
| 197 | { |
| 198 | do |
| 199 | { |
| 200 | unsigned int tmpv; |
| 201 | OP_CHECK32(OP_SUBA32); tmpv = REG_READ(op & 0x0f); OP_SUBA(tmpv); |
| 202 | } |
| 203 | while(0); |
| 204 | } |
| 205 | |
| 206 | static void op30(unsigned int op, unsigned int imm) |
| 207 | { |
| 208 | do |
| 209 | { |
| 210 | unsigned int tmpv; |
| 211 | OP_CHECK32(OP_CMPA32); tmpv = REG_READ(op & 0x0f); OP_CMPA(tmpv); |
| 212 | } |
| 213 | while(0); |
| 214 | } |
| 215 | |
| 216 | static void op40(unsigned int op, unsigned int imm) |
| 217 | { |
| 218 | do |
| 219 | { |
| 220 | unsigned int tmpv; |
| 221 | OP_CHECK32(OP_ADDA32); tmpv = REG_READ(op & 0x0f); OP_ADDA(tmpv); |
| 222 | } |
| 223 | while(0); |
| 224 | } |
| 225 | |
| 226 | static void op50(unsigned int op, unsigned int imm) |
| 227 | { |
| 228 | do |
| 229 | { |
| 230 | unsigned int tmpv; |
| 231 | OP_CHECK32(OP_ANDA32); tmpv = REG_READ(op & 0x0f); OP_ANDA(tmpv); |
| 232 | } |
| 233 | while(0); |
| 234 | } |
| 235 | |
| 236 | static void op60(unsigned int op, unsigned int imm) |
| 237 | { |
| 238 | do |
| 239 | { |
| 240 | unsigned int tmpv; |
| 241 | OP_CHECK32(OP_ORA32 ); tmpv = REG_READ(op & 0x0f); OP_ORA (tmpv); |
| 242 | } |
| 243 | while(0); |
| 244 | } |
| 245 | |
| 246 | static void op70(unsigned int op, unsigned int imm) |
| 247 | { |
| 248 | do |
| 249 | { |
| 250 | unsigned int tmpv; |
| 251 | OP_CHECK32(OP_EORA32); tmpv = REG_READ(op & 0x0f); OP_EORA(tmpv); |
| 252 | } |
| 253 | while(0); |
| 254 | } |
| 255 | |
| 256 | // OP a, (ri) |
| 257 | static void op11(unsigned int op, unsigned int imm) |
| 258 | { |
| 259 | unsigned int tmpv; |
| 260 | tmpv = ptr1_read(op); OP_SUBA(tmpv); |
| 261 | } |
| 262 | |
| 263 | static void op31(unsigned int op, unsigned int imm) |
| 264 | { |
| 265 | unsigned int tmpv; |
| 266 | tmpv = ptr1_read(op); OP_CMPA(tmpv); |
| 267 | } |
| 268 | |
| 269 | static void op41(unsigned int op, unsigned int imm) |
| 270 | { |
| 271 | unsigned int tmpv; |
| 272 | tmpv = ptr1_read(op); OP_ADDA(tmpv); |
| 273 | } |
| 274 | |
| 275 | static void op51(unsigned int op, unsigned int imm) |
| 276 | { |
| 277 | unsigned int tmpv; |
| 278 | tmpv = ptr1_read(op); OP_ANDA(tmpv); |
| 279 | } |
| 280 | |
| 281 | static void op61(unsigned int op, unsigned int imm) |
| 282 | { |
| 283 | unsigned int tmpv; |
| 284 | tmpv = ptr1_read(op); OP_ORA (tmpv); |
| 285 | } |
| 286 | |
| 287 | static void op71(unsigned int op, unsigned int imm) |
| 288 | { |
| 289 | unsigned int tmpv; |
| 290 | tmpv = ptr1_read(op); OP_EORA(tmpv); |
| 291 | } |
| 292 | |
| 293 | // OP a, adr |
| 294 | static void op03(unsigned int op, unsigned int imm) |
| 295 | { |
| 296 | unsigned int tmpv; |
| 297 | tmpv = ssp->RAM[op & 0x1ff]; OP_LDA (tmpv); |
| 298 | } |
| 299 | |
| 300 | static void op13(unsigned int op, unsigned int imm) |
| 301 | { |
| 302 | unsigned int tmpv; |
| 303 | tmpv = ssp->RAM[op & 0x1ff]; OP_SUBA(tmpv); |
| 304 | } |
| 305 | |
| 306 | static void op33(unsigned int op, unsigned int imm) |
| 307 | { |
| 308 | unsigned int tmpv; |
| 309 | tmpv = ssp->RAM[op & 0x1ff]; OP_CMPA(tmpv); |
| 310 | } |
| 311 | |
| 312 | static void op43(unsigned int op, unsigned int imm) |
| 313 | { |
| 314 | unsigned int tmpv; |
| 315 | tmpv = ssp->RAM[op & 0x1ff]; OP_ADDA(tmpv); |
| 316 | } |
| 317 | |
| 318 | static void op53(unsigned int op, unsigned int imm) |
| 319 | { |
| 320 | unsigned int tmpv; |
| 321 | tmpv = ssp->RAM[op & 0x1ff]; OP_ANDA(tmpv); |
| 322 | } |
| 323 | |
| 324 | static void op63(unsigned int op, unsigned int imm) |
| 325 | { |
| 326 | unsigned int tmpv; |
| 327 | tmpv = ssp->RAM[op & 0x1ff]; OP_ORA (tmpv); |
| 328 | } |
| 329 | |
| 330 | static void op73(unsigned int op, unsigned int imm) |
| 331 | { |
| 332 | unsigned int tmpv; |
| 333 | tmpv = ssp->RAM[op & 0x1ff]; OP_EORA(tmpv); |
| 334 | } |
| 335 | |
| 336 | // OP a, imm |
| 337 | static void op14(unsigned int op, unsigned int imm) |
| 338 | { |
| 339 | OP_SUBA(imm); |
| 340 | } |
| 341 | |
| 342 | static void op34(unsigned int op, unsigned int imm) |
| 343 | { |
| 344 | OP_CMPA(imm); |
| 345 | } |
| 346 | |
| 347 | static void op44(unsigned int op, unsigned int imm) |
| 348 | { |
| 349 | OP_ADDA(imm); |
| 350 | } |
| 351 | |
| 352 | static void op54(unsigned int op, unsigned int imm) |
| 353 | { |
| 354 | OP_ANDA(imm); |
| 355 | } |
| 356 | |
| 357 | static void op64(unsigned int op, unsigned int imm) |
| 358 | { |
| 359 | OP_ORA (imm); |
| 360 | } |
| 361 | |
| 362 | static void op74(unsigned int op, unsigned int imm) |
| 363 | { |
| 364 | OP_EORA(imm); |
| 365 | } |
| 366 | |
| 367 | // OP a, ((ri)) |
| 368 | static void op15(unsigned int op, unsigned int imm) |
| 369 | { |
| 370 | unsigned int tmpv; |
| 371 | tmpv = ptr2_read(op); OP_SUBA(tmpv); |
| 372 | } |
| 373 | |
| 374 | static void op35(unsigned int op, unsigned int imm) |
| 375 | { |
| 376 | unsigned int tmpv; |
| 377 | tmpv = ptr2_read(op); OP_CMPA(tmpv); |
| 378 | } |
| 379 | |
| 380 | static void op45(unsigned int op, unsigned int imm) |
| 381 | { |
| 382 | unsigned int tmpv; |
| 383 | tmpv = ptr2_read(op); OP_ADDA(tmpv); |
| 384 | } |
| 385 | |
| 386 | static void op55(unsigned int op, unsigned int imm) |
| 387 | { |
| 388 | unsigned int tmpv; |
| 389 | tmpv = ptr2_read(op); OP_ANDA(tmpv); |
| 390 | } |
| 391 | |
| 392 | static void op65(unsigned int op, unsigned int imm) |
| 393 | { |
| 394 | unsigned int tmpv; |
| 395 | tmpv = ptr2_read(op); OP_ORA (tmpv); |
| 396 | } |
| 397 | |
| 398 | static void op75(unsigned int op, unsigned int imm) |
| 399 | { |
| 400 | unsigned int tmpv; |
| 401 | tmpv = ptr2_read(op); OP_EORA(tmpv); |
| 402 | } |
| 403 | |
| 404 | // OP a, ri |
| 405 | static void op19(unsigned int op, unsigned int imm) |
| 406 | { |
| 407 | unsigned int tmpv; |
| 408 | tmpv = rIJ[IJind]; OP_SUBA(tmpv); |
| 409 | } |
| 410 | |
| 411 | static void op39(unsigned int op, unsigned int imm) |
| 412 | { |
| 413 | unsigned int tmpv; |
| 414 | tmpv = rIJ[IJind]; OP_CMPA(tmpv); |
| 415 | } |
| 416 | |
| 417 | static void op49(unsigned int op, unsigned int imm) |
| 418 | { |
| 419 | unsigned int tmpv; |
| 420 | tmpv = rIJ[IJind]; OP_ADDA(tmpv); |
| 421 | } |
| 422 | |
| 423 | static void op59(unsigned int op, unsigned int imm) |
| 424 | { |
| 425 | unsigned int tmpv; |
| 426 | tmpv = rIJ[IJind]; OP_ANDA(tmpv); |
| 427 | } |
| 428 | |
| 429 | static void op69(unsigned int op, unsigned int imm) |
| 430 | { |
| 431 | unsigned int tmpv; |
| 432 | tmpv = rIJ[IJind]; OP_ORA (tmpv); |
| 433 | } |
| 434 | |
| 435 | static void op79(unsigned int op, unsigned int imm) |
| 436 | { |
| 437 | unsigned int tmpv; |
| 438 | tmpv = rIJ[IJind]; OP_EORA(tmpv); |
| 439 | } |
| 440 | |
| 441 | // OP simm |
| 442 | static void op1c(unsigned int op, unsigned int imm) |
| 443 | { |
| 444 | OP_SUBA(op & 0xff); |
| 445 | } |
| 446 | |
| 447 | static void op3c(unsigned int op, unsigned int imm) |
| 448 | { |
| 449 | OP_CMPA(op & 0xff); |
| 450 | } |
| 451 | |
| 452 | static void op4c(unsigned int op, unsigned int imm) |
| 453 | { |
| 454 | OP_ADDA(op & 0xff); |
| 455 | } |
| 456 | |
| 457 | static void op5c(unsigned int op, unsigned int imm) |
| 458 | { |
| 459 | OP_ANDA(op & 0xff); |
| 460 | } |
| 461 | |
| 462 | static void op6c(unsigned int op, unsigned int imm) |
| 463 | { |
| 464 | OP_ORA (op & 0xff); |
| 465 | } |
| 466 | |
| 467 | static void op7c(unsigned int op, unsigned int imm) |
| 468 | { |
| 469 | OP_EORA(op & 0xff); |
| 470 | } |
| 471 | |
| 472 | typedef void (in_func)(unsigned int op, unsigned int imm); |
| 473 | |
| 474 | static in_func *in_funcs[0x80] = |
| 475 | { |
| 476 | op00, op01, op02, op03, op04, op05, op06, op07, |
| 477 | NULL, op09, op0a, NULL, op0c, op0c, op0c, op0c, |
| 478 | op10, op11, NULL, op13, op14, op15, NULL, NULL, |
| 479 | NULL, op19, NULL, op1b, op1c, NULL, NULL, NULL, |
| 480 | NULL, NULL, NULL, NULL, op24, op25, op26, NULL, |
| 481 | NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, |
| 482 | op30, op31, NULL, op33, op34, op35, NULL, NULL, |
| 483 | NULL, op39, NULL, NULL, op3c, NULL, NULL, NULL, |
| 484 | op40, op41, NULL, op43, op44, op45, NULL, NULL, |
| 485 | op48, op49, NULL, op4b, op4c, NULL, NULL, NULL, |
| 486 | op50, op51, NULL, op53, op54, op55, NULL, NULL, |
| 487 | NULL, op59, NULL, op5b, op5c, NULL, NULL, NULL, |
| 488 | op60, op61, NULL, op63, op64, op65, NULL, NULL, |
| 489 | NULL, op69, NULL, NULL, op6c, NULL, NULL, NULL, |
| 490 | op70, op71, NULL, op73, op74, op75, NULL, NULL, |
| 491 | NULL, op79, NULL, NULL, op7c, NULL, NULL, NULL, |
| 492 | }; |
| 493 | |
| 494 | // ----------------------------------------------------- |
| 495 | |
| 496 | static unsigned char iram_context_map[] = |
| 497 | { |
| 498 | 0, 0, 0, 0, 1, 0, 0, 0, // 04 |
| 499 | 0, 0, 0, 0, 0, 0, 2, 0, // 0e |
| 500 | 0, 0, 0, 0, 0, 3, 0, 4, // 15 17 |
| 501 | 5, 0, 0, 6, 0, 7, 0, 0, // 18 1b 1d |
| 502 | 8, 9, 0, 0, 0,10, 0, 0, // 20 21 25 |
| 503 | 0, 0, 0, 0, 0, 0, 0, 0, |
| 504 | 0, 0,11, 0, 0,12, 0, 0, // 32 35 |
| 505 | 13,14, 0, 0, 0, 0, 0, 0 // 38 39 |
| 506 | }; |
| 507 | |
| 508 | static int get_iram_context(void) |
| 509 | { |
| 510 | unsigned char *ir = (unsigned char *)svp->iram_rom; |
| 511 | int val1, val = ir[0x083^1] + ir[0x4FA^1] + ir[0x5F7^1] + ir[0x47B^1]; |
| 512 | val1 = iram_context_map[(val>>1)&0x3f]; |
| 513 | |
| 514 | if (val1 == 0) { |
| 515 | printf("val: %02x PC=%04x\n", (val>>1)&0x3f, rPC); |
| 516 | //debug_dump2file(name, svp->iram_rom, 0x800); |
| 517 | exit(1); |
| 518 | } |
| 519 | // elprintf(EL_ANOMALY, "iram_context: %02i", val1); |
| 520 | return val1; |
| 521 | } |
| 522 | |
| 523 | // ----------------------------------------------------- |
| 524 | /* |
| 525 | enum { |
| 526 | SSP_GR0, SSP_X, SSP_Y, SSP_A, |
| 527 | SSP_ST, SSP_STACK, SSP_PC, SSP_P, |
| 528 | SSP_PM0, SSP_PM1, SSP_PM2, SSP_XST, |
| 529 | SSP_PM4, SSP_gr13, SSP_PMC, SSP_AL |
| 530 | }; |
| 531 | */ |
| 532 | /* regs with known values */ |
| 533 | static struct |
| 534 | { |
| 535 | ssp_reg_t gr[8]; |
| 536 | unsigned char r[8]; |
| 537 | } const_regs; |
| 538 | |
| 539 | #define CRREG_X (1 << SSP_X) |
| 540 | #define CRREG_Y (1 << SSP_Y) |
| 541 | #define CRREG_A (1 << SSP_A) /* AH only */ |
| 542 | #define CRREG_ST (1 << SSP_ST) |
| 543 | #define CRREG_STACK (1 << SSP_STACK) |
| 544 | #define CRREG_PC (1 << SSP_PC) |
| 545 | #define CRREG_P (1 << SSP_P) |
| 546 | #define CRREG_PR0 (1 << 8) |
| 547 | #define CRREG_PR4 (1 << 12) |
| 548 | #define CRREG_AL (1 << 16) |
| 549 | |
| 550 | static u32 const_regb = 0; /* bitfield of known register values */ |
| 551 | static u32 dirty_regb = 0; /* known vals, which need to be flushed (only r0-r7) */ |
| 552 | |
| 553 | /* known values of host regs. |
| 554 | * -1 - unknown |
| 555 | * 00000-0ffff - 16bit value |
| 556 | * 10000-1ffff - base reg (r7) + 16bit val |
| 557 | * 20000 - means reg (low) eq AH |
| 558 | */ |
| 559 | static int hostreg_r[4]; |
| 560 | |
| 561 | static void hostreg_clear(void) |
| 562 | { |
| 563 | int i; |
| 564 | for (i = 0; i < 4; i++) |
| 565 | hostreg_r[i] = -1; |
| 566 | } |
| 567 | |
| 568 | /*static*/ void hostreg_ah_changed(void) |
| 569 | { |
| 570 | int i; |
| 571 | for (i = 0; i < 4; i++) |
| 572 | if (hostreg_r[i] == 0x20000) hostreg_r[i] = -1; |
| 573 | } |
| 574 | |
| 575 | |
| 576 | #define PROGRAM(x) ((unsigned short *)svp->iram_rom)[x] |
| 577 | |
| 578 | /* load 16bit val into host reg r0-r3. Nothing is trashed */ |
| 579 | static void tr_mov16(int r, int val) |
| 580 | { |
| 581 | if (hostreg_r[r] != val) { |
| 582 | emit_mov_const(r, val); |
| 583 | hostreg_r[r] = val; |
| 584 | } |
| 585 | } |
| 586 | |
| 587 | /* write dirty r0-r7 to host regs. Nothing is trashed */ |
| 588 | static void tr_flush_dirty(void) |
| 589 | { |
| 590 | int i, ror = 0, reg; |
| 591 | dirty_regb >>= 8; |
| 592 | /* r0-r7 */ |
| 593 | for (i = 0; dirty_regb && i < 8; i++, dirty_regb >>= 1) |
| 594 | { |
| 595 | if (!(dirty_regb&1)) continue; |
| 596 | switch (i&3) { |
| 597 | case 0: ror = 0; break; |
| 598 | case 1: ror = 24/2; break; |
| 599 | case 2: ror = 16/2; break; |
| 600 | } |
| 601 | reg = (i < 4) ? 8 : 9; |
| 602 | EOP_BIC_IMM(reg,reg,ror,0xff); |
| 603 | if (const_regs.r[i] != 0) |
| 604 | EOP_ORR_IMM(reg,reg,ror,const_regs.r[i]); |
| 605 | } |
| 606 | } |
| 607 | |
| 608 | /* read bank word to r0 (MSW may contain trash). Thrashes r1. */ |
| 609 | static void tr_bank_read(int addr) /* word addr 0-0x1ff */ |
| 610 | { |
| 611 | if (addr&1) { |
| 612 | int breg = 7; |
| 613 | if (addr > 0x7f) { |
| 614 | if (hostreg_r[1] != (0x10000|((addr&0x180)<<1))) { |
| 615 | EOP_ADD_IMM(1,7,30/2,(addr&0x180)>>1); // add r1, r7, ((op&0x180)<<1) |
| 616 | hostreg_r[1] = 0x10000|((addr&0x180)<<1); |
| 617 | } |
| 618 | breg = 1; |
| 619 | } |
| 620 | EOP_LDRH_IMM(0,breg,(addr&0x7f)<<1); // ldrh r0, [r1, (op&0x7f)<<1] |
| 621 | } else { |
| 622 | EOP_LDR_IMM(0,7,(addr&0x1ff)<<1); // ldr r0, [r1, (op&0x1ff)<<1] |
| 623 | } |
| 624 | hostreg_r[0] = -1; |
| 625 | } |
| 626 | |
| 627 | /* write r0 to bank. Trashes r1. */ |
| 628 | static void tr_bank_write(int addr) |
| 629 | { |
| 630 | int breg = 7; |
| 631 | if (addr > 0x7f) { |
| 632 | if (hostreg_r[1] != (0x10000|((addr&0x180)<<1))) { |
| 633 | EOP_ADD_IMM(1,7,30/2,(addr&0x180)>>1); // add r1, r7, ((op&0x180)<<1) |
| 634 | hostreg_r[1] = 0x10000|((addr&0x180)<<1); |
| 635 | } |
| 636 | breg = 1; |
| 637 | } |
| 638 | EOP_STRH_IMM(0,breg,(addr&0x7f)<<1); // strh r0, [r1, (op&0x7f)<<1] |
| 639 | } |
| 640 | |
| 641 | /* handle RAM bank pointer modifiers. Nothing is trashed. */ |
| 642 | static void tr_ptrr_mod(int r, int mod, int need_modulo) |
| 643 | { |
| 644 | int modulo = -1, modulo_shift = -1; /* unknown */ |
| 645 | |
| 646 | if (mod == 0) return; |
| 647 | |
| 648 | if (!need_modulo || mod == 1) // +! |
| 649 | modulo_shift = 8; |
| 650 | else if (need_modulo && (const_regb & CRREG_ST)) { |
| 651 | modulo_shift = const_regs.gr[SSP_ST].h & 7; |
| 652 | if (modulo_shift == 0) modulo_shift = 8; |
| 653 | } |
| 654 | |
| 655 | if (mod > 1 && modulo_shift == -1) { printf("need var modulo\n"); exit(1); } |
| 656 | modulo = (1 << modulo_shift) - 1; |
| 657 | |
| 658 | if (const_regb & (1 << (r + 8))) { |
| 659 | if (mod == 2) |
| 660 | const_regs.r[r] = (const_regs.r[r] & ~modulo) | ((const_regs.r[r] - 1) & modulo); |
| 661 | else const_regs.r[r] = (const_regs.r[r] & ~modulo) | ((const_regs.r[r] + 1) & modulo); |
| 662 | } else { |
| 663 | int reg = (r < 4) ? 8 : 9; |
| 664 | int ror = ((r&3) + 1)*8 - (8 - modulo_shift); |
| 665 | EOP_MOV_REG_ROR(reg,reg,ror); |
| 666 | // {add|sub} reg, reg, #1<<shift |
| 667 | EOP_C_DOP_IMM(A_COND_AL,(mod==2)?A_OP_SUB:A_OP_ADD,0,reg,reg, 8/2, 1<<(8 - modulo_shift)); |
| 668 | EOP_MOV_REG_ROR(reg,reg,32-ror); |
| 669 | } |
| 670 | } |
| 671 | |
| 672 | // SSP_GR0, SSP_X, SSP_Y, SSP_A, |
| 673 | // SSP_ST, SSP_STACK, SSP_PC, SSP_P, |
| 674 | //@ r4: XXYY |
| 675 | //@ r5: A |
| 676 | //@ r6: STACK and emu flags |
| 677 | //@ r7: SSP context |
| 678 | //@ r10: P |
| 679 | |
| 680 | // write r0 to general reg handlers. Trashes r1 |
| 681 | static void tr_r0_unhandled(void) |
| 682 | { |
| 683 | printf("unhandled\n"); |
| 684 | exit(1); |
| 685 | } |
| 686 | |
| 687 | static void tr_r0_to_GR0(void) |
| 688 | { |
| 689 | // do nothing |
| 690 | } |
| 691 | |
| 692 | static void tr_r0_to_X(void) |
| 693 | { |
| 694 | EOP_MOV_REG_LSL(4, 4, 16); // mov r4, r4, lsl #16 |
| 695 | EOP_MOV_REG_LSR(4, 4, 16); // mov r4, r4, lsr #16 |
| 696 | EOP_ORR_REG_LSL(4, 4, 0, 16); // orr r4, r4, r0, lsl #16 |
| 697 | } |
| 698 | |
| 699 | static void tr_r0_to_Y(void) |
| 700 | { |
| 701 | EOP_MOV_REG_LSR(4, 4, 16); // mov r4, r4, lsr #16 |
| 702 | EOP_ORR_REG_LSL(4, 4, 0, 16); // orr r4, r4, r0, lsl #16 |
| 703 | EOP_MOV_REG_ROR(4, 4, 16); // mov r4, r4, ror #16 |
| 704 | } |
| 705 | |
| 706 | static void tr_r0_to_A(void) |
| 707 | { |
| 708 | EOP_MOV_REG_LSL(5, 5, 16); // mov r5, r5, lsl #16 |
| 709 | EOP_MOV_REG_LSR(5, 5, 16); // mov r5, r5, lsl #16 @ AL |
| 710 | EOP_ORR_REG_LSL(5, 5, 0, 16); // orr r5, r5, r0, lsl #16 |
| 711 | hostreg_r[0] = 0x20000; |
| 712 | } |
| 713 | |
| 714 | static void tr_r0_to_ST(void) |
| 715 | { |
| 716 | // VR doesn't need much accuracy here.. |
| 717 | EOP_AND_IMM(1, 0, 0, 0x67); // and r1, r0, #0x67 |
| 718 | EOP_AND_IMM(6, 6, 8/2, 0xe0); // and r6, r6, #7<<29 @ preserve STACK |
| 719 | EOP_ORR_REG_LSL(6, 6, 1, 4); // orr r6, r6, r1, lsl #4 |
| 720 | hostreg_r[1] = -1; |
| 721 | } |
| 722 | |
| 723 | static void tr_r0_to_STACK(void) |
| 724 | { |
| 725 | // 448 |
| 726 | EOP_ADD_IMM(1, 7, 24/2, 0x04); // add r1, r7, 0x400 |
| 727 | EOP_ADD_IMM(1, 1, 0, 0x48); // add r1, r1, 0x048 |
| 728 | EOP_ADD_REG_LSR(1, 1, 6, 28); // add r1, r1, r6, lsr #26 |
| 729 | EOP_STRH_SIMPLE(0, 1); // strh r0, [r1] |
| 730 | EOP_ADD_IMM(6, 6, 24/2, 0x20); // add r6, r6, #1<<29 |
| 731 | hostreg_r[1] = -1; |
| 732 | } |
| 733 | |
| 734 | static void tr_r0_to_PC(void) |
| 735 | { |
| 736 | EOP_MOV_REG_LSL(1, 0, 16); // mov r1, r0, lsl #16 |
| 737 | EOP_STR_IMM(0,7,0x400+6*4); // str r0, [r7, #(0x400+6*8)] |
| 738 | hostreg_r[1] = -1; |
| 739 | } |
| 740 | |
| 741 | typedef void (tr_write_func)(void); |
| 742 | |
| 743 | static tr_write_func *tr_write_funcs[8] = |
| 744 | { |
| 745 | tr_r0_to_GR0, |
| 746 | tr_r0_to_X, |
| 747 | tr_r0_to_Y, |
| 748 | tr_r0_to_A, |
| 749 | tr_r0_to_ST, |
| 750 | tr_r0_to_STACK, |
| 751 | tr_r0_to_PC, |
| 752 | tr_r0_unhandled |
| 753 | }; |
| 754 | |
| 755 | |
| 756 | static int translate_op(unsigned int op, int *pc, int imm) |
| 757 | { |
| 758 | u32 tmpv; |
| 759 | int ret = 0; |
| 760 | |
| 761 | switch (op >> 9) |
| 762 | { |
| 763 | // ld d, s |
| 764 | case 0x00: |
| 765 | if (op == 0) { ret++; break; } // nop |
| 766 | break; |
| 767 | |
| 768 | // ld a, adr |
| 769 | case 0x03: |
| 770 | tr_bank_read(op&0x1ff); |
| 771 | tr_r0_to_A(); |
| 772 | const_regb &= ~CRREG_A; |
| 773 | hostreg_r[0] = 0x20000; |
| 774 | ret++; break; |
| 775 | |
| 776 | // ldi d, imm |
| 777 | case 0x04: |
| 778 | tmpv = (op & 0xf0) >> 4; |
| 779 | if (tmpv < 8) |
| 780 | { |
| 781 | tr_mov16(0, imm); |
| 782 | tr_write_funcs[tmpv](); |
| 783 | const_regs.gr[tmpv].h = imm; |
| 784 | const_regb |= 1 << tmpv; |
| 785 | ret++; break; |
| 786 | } |
| 787 | else if (tmpv == 0xe && (PROGRAM(*pc) >> 9) == 4) |
| 788 | { |
| 789 | // programming PMC.. |
| 790 | (*pc)++; |
| 791 | tmpv = imm | (PROGRAM((*pc)++) << 16); |
| 792 | emit_mov_const(0, tmpv); |
| 793 | EOP_LDR_IMM(1,7,0x484); // ldr r0, [r7, #0x484] // emu_status |
| 794 | EOP_STR_IMM(0,7,0x400+14*4); // PMC |
| 795 | // TODO: do this only on reads |
| 796 | if (tmpv == 0x187f04) { // fe08 |
| 797 | EOP_LDR_IMM(0,7,0x490); // dram_ptr |
| 798 | EOP_ADD_IMM(0,0,24/2,0xfe); // add r0, r0, #0xfe00 |
| 799 | EOP_LDRH_IMM(0,0,8); // ldrh r0, [r0, #8] |
| 800 | EOP_TST_REG_SIMPLE(0,0); |
| 801 | EOP_C_DOP_IMM(A_COND_EQ,A_OP_ADD,0,11,11,22/2,1); // add r11, r11, #1024 |
| 802 | EOP_C_DOP_IMM(A_COND_EQ,A_OP_ORR,0, 1, 1,24/2,SSP_WAIT_30FE08>>8); // orr r1, r1, #SSP_WAIT_30FE08 |
| 803 | } |
| 804 | EOP_ORR_IMM(1,1,0,SSP_PMC_SET); // orr r1, r1, #SSP_PMC_SET |
| 805 | EOP_STR_IMM(1,7,0x484); // str r1, [r7, #0x484] // emu_status |
| 806 | hostreg_r[0] = hostreg_r[1] = -1; |
| 807 | ret += 2; break; |
| 808 | } |
| 809 | else |
| 810 | return -1; /* TODO.. */ |
| 811 | |
| 812 | |
| 813 | // ldi (ri), imm |
| 814 | case 0x06: |
| 815 | // int t = (op&3) | ((op>>6)&4) | ((op<<1)&0x18); |
| 816 | tr_mov16(0, imm); |
| 817 | if ((op&3) == 3) |
| 818 | { |
| 819 | tmpv = (op>>2) & 3; // direct addressing |
| 820 | if (op & 0x100) { |
| 821 | if (hostreg_r[1] != 0x10200) { |
| 822 | EOP_ADD_IMM(1,7,30/2,0x200>>2); // add r1, r7, 0x200 |
| 823 | hostreg_r[1] = 0x10200; |
| 824 | } |
| 825 | EOP_STRH_IMM(0,1,tmpv<<1); // str r0, [r1, {0,2,4,6}] |
| 826 | } else { |
| 827 | EOP_STRH_IMM(0,7,tmpv<<1); // str r0, [r7, {0,2,4,6}] |
| 828 | } |
| 829 | } |
| 830 | else |
| 831 | { |
| 832 | int r = (op&3) | ((op>>6)&4); |
| 833 | if (const_regb & (1 << (r + 8))) { |
| 834 | tr_bank_write(const_regs.r[r] | ((r < 4) ? 0 : 0x100)); |
| 835 | } else { |
| 836 | int reg = (r < 4) ? 8 : 9; |
| 837 | int ror = ((4 - (r&3))*8) & 0x1f; |
| 838 | EOP_AND_IMM(1,reg,ror/2,0xff); // and r1, r{7,8}, <mask> |
| 839 | if (r >= 4) |
| 840 | EOP_ORR_IMM(1,1,((ror-8)&0x1f)/2,1); // orr r1, r1, 1<<shift |
| 841 | if (r&3) EOP_ADD_REG_LSR(1,7,1, (r&3)*8-1); // add r1, r7, r1, lsr #lsr |
| 842 | else EOP_ADD_REG_LSL(1,7,1,1); |
| 843 | EOP_STRH_SIMPLE(0,1); // strh r0, [r1] |
| 844 | hostreg_r[1] = -1; |
| 845 | } |
| 846 | tr_ptrr_mod(r, (op>>2) & 3, 0); |
| 847 | } |
| 848 | ret++; break; |
| 849 | |
| 850 | // ld adr, a |
| 851 | case 0x07: |
| 852 | if (hostreg_r[0] != 0x20000) { |
| 853 | EOP_MOV_REG_LSR(0, 5, 16); // mov r0, r5, lsr #16 @ A |
| 854 | hostreg_r[0] = 0x20000; |
| 855 | } |
| 856 | tr_bank_write(op&0x1ff); |
| 857 | ret++; break; |
| 858 | |
| 859 | // ldi ri, simm |
| 860 | case 0x0c ... 0x0f: |
| 861 | tmpv = (op>>8)&7; |
| 862 | const_regs.r[tmpv] = op; |
| 863 | const_regb |= 1 << (tmpv + 8); |
| 864 | dirty_regb |= 1 << (tmpv + 8); |
| 865 | ret++; break; |
| 866 | } |
| 867 | |
| 868 | return ret; |
| 869 | } |
| 870 | |
| 871 | static void *translate_block(int pc) |
| 872 | { |
| 873 | unsigned int op, op1, imm, ccount = 0; |
| 874 | unsigned int *block_start; |
| 875 | int ret; |
| 876 | |
| 877 | // create .pool |
| 878 | //*tcache_ptr++ = (u32) in_funcs; // -1 func pool |
| 879 | |
| 880 | printf("translate %04x -> %04x\n", pc<<1, (tcache_ptr-tcache)<<2); |
| 881 | block_start = tcache_ptr; |
| 882 | const_regb = dirty_regb = 0; |
| 883 | hostreg_clear(); |
| 884 | |
| 885 | emit_block_prologue(); |
| 886 | |
| 887 | for (; ccount < 100;) |
| 888 | { |
| 889 | //printf(" insn #%i\n", icount); |
| 890 | op = PROGRAM(pc++); |
| 891 | op1 = op >> 9; |
| 892 | imm = (u32)-1; |
| 893 | |
| 894 | if ((op1 & 0xf) == 4 || (op1 & 0xf) == 6) |
| 895 | imm = PROGRAM(pc++); // immediate |
| 896 | |
| 897 | ret = translate_op(op, &pc, imm); |
| 898 | if (ret <= 0) |
| 899 | { |
| 900 | tr_flush_dirty(); |
| 901 | |
| 902 | emit_mov_const(0, op); |
| 903 | |
| 904 | // need immediate? |
| 905 | if (imm != (u32)-1) |
| 906 | emit_mov_const(1, imm); |
| 907 | |
| 908 | // dump PC |
| 909 | emit_pc_dump(pc); |
| 910 | |
| 911 | emit_interpreter_call(in_funcs[op1]); |
| 912 | |
| 913 | if (in_funcs[op1] == NULL) { |
| 914 | printf("NULL func! op=%08x (%02x)\n", op, op1); |
| 915 | exit(1); |
| 916 | } |
| 917 | ccount++; |
| 918 | hostreg_clear(); |
| 919 | } |
| 920 | else |
| 921 | ccount += ret; |
| 922 | |
| 923 | if (op1 == 0x24 || op1 == 0x26 || // call, bra |
| 924 | ((op1 == 0 || op1 == 1 || op1 == 4 || op1 == 5 || op1 == 9 || op1 == 0x25) && |
| 925 | (op & 0xf0) == 0x60)) { // ld PC |
| 926 | break; |
| 927 | } |
| 928 | } |
| 929 | |
| 930 | tr_flush_dirty(); |
| 931 | emit_block_epilogue(ccount + 1); |
| 932 | *tcache_ptr++ = 0xffffffff; // end of block |
| 933 | //printf(" %i inst\n", icount); |
| 934 | |
| 935 | if (tcache_ptr - tcache > TCACHE_SIZE/4) { |
| 936 | printf("tcache overflow!\n"); |
| 937 | fflush(stdout); |
| 938 | exit(1); |
| 939 | } |
| 940 | |
| 941 | // stats |
| 942 | nblocks++; |
| 943 | //if (pc >= 0x400) |
| 944 | printf("%i blocks, %i bytes\n", nblocks, (tcache_ptr - tcache)*4); |
| 945 | //printf("%p %p\n", tcache_ptr, emit_block_epilogue); |
| 946 | |
| 947 | #ifdef DUMP_BLOCK |
| 948 | { |
| 949 | FILE *f = fopen("tcache.bin", "wb"); |
| 950 | fwrite(tcache, 1, (tcache_ptr - tcache)*4, f); |
| 951 | fclose(f); |
| 952 | } |
| 953 | exit(0); |
| 954 | #endif |
| 955 | |
| 956 | handle_caches(); |
| 957 | |
| 958 | return block_start; |
| 959 | } |
| 960 | |
| 961 | |
| 962 | |
| 963 | // ----------------------------------------------------- |
| 964 | |
| 965 | int ssp1601_dyn_startup(void) |
| 966 | { |
| 967 | memset(tcache, 0, TCACHE_SIZE); |
| 968 | memset(block_table, 0, sizeof(block_table)); |
| 969 | memset(block_table_iram, 0, sizeof(block_table_iram)); |
| 970 | tcache_ptr = tcache; |
| 971 | *tcache_ptr++ = 0xffffffff; |
| 972 | |
| 973 | return 0; |
| 974 | } |
| 975 | |
| 976 | |
| 977 | void ssp1601_dyn_reset(ssp1601_t *ssp) |
| 978 | { |
| 979 | ssp1601_reset_local(ssp); |
| 980 | ssp->rom_ptr = (unsigned int) Pico.rom; |
| 981 | ssp->iram_ptr = (unsigned int) svp->iram_rom; |
| 982 | ssp->dram_ptr = (unsigned int) svp->dram; |
| 983 | } |
| 984 | |
| 985 | void ssp1601_dyn_run(int cycles) |
| 986 | { |
| 987 | if (ssp->emu_status & SSP_WAIT_MASK) return; |
| 988 | //{ printf("%i wait\n", Pico.m.frame_count); return; } |
| 989 | //printf("%i %04x\n", Pico.m.frame_count, rPC<<1); |
| 990 | |
| 991 | #ifdef DUMP_BLOCK |
| 992 | rPC = DUMP_BLOCK >> 1; |
| 993 | #endif |
| 994 | while (cycles > 0) |
| 995 | { |
| 996 | int (*trans_entry)(void); |
| 997 | if (rPC < 0x800/2) |
| 998 | { |
| 999 | if (iram_dirty) { |
| 1000 | iram_context = get_iram_context(); |
| 1001 | iram_dirty--; |
| 1002 | } |
| 1003 | if (block_table_iram[iram_context][rPC] == NULL) |
| 1004 | block_table_iram[iram_context][rPC] = translate_block(rPC); |
| 1005 | trans_entry = (void *) block_table_iram[iram_context][rPC]; |
| 1006 | } |
| 1007 | else |
| 1008 | { |
| 1009 | if (block_table[rPC] == NULL) |
| 1010 | block_table[rPC] = translate_block(rPC); |
| 1011 | trans_entry = (void *) block_table[rPC]; |
| 1012 | } |
| 1013 | |
| 1014 | had_jump = 0; |
| 1015 | |
| 1016 | //printf("enter %04x\n", rPC<<1); |
| 1017 | cycles -= trans_entry(); |
| 1018 | //printf("leave %04x\n", rPC<<1); |
| 1019 | } |
| 1020 | // debug_dump2file("tcache.bin", tcache, (tcache_ptr - tcache) << 1); |
| 1021 | // exit(1); |
| 1022 | } |
| 1023 | |