| 1 | // SSP1601 to ARM recompiler |
| 2 | |
| 3 | // (c) Copyright 2008, Grazvydas "notaz" Ignotas |
| 4 | // Free for non-commercial use. |
| 5 | |
| 6 | #include "../../pico_int.h" |
| 7 | #include "../../../cpu/drc/cmn.h" |
| 8 | #include "compiler.h" |
| 9 | |
| 10 | // FIXME: asm has these hardcoded |
| 11 | #define SSP_BLOCKTAB_ENTS (0x5090/2) |
| 12 | #define SSP_BLOCKTAB_IRAM_ONE (0x800/2) // table entries |
| 13 | #define SSP_BLOCKTAB_IRAM_ENTS (15*SSP_BLOCKTAB_IRAM_ONE) |
| 14 | |
| 15 | static u32 **ssp_block_table; // [0x5090/2]; |
| 16 | static u32 **ssp_block_table_iram; // [15][0x800/2]; |
| 17 | |
| 18 | static u32 *tcache_ptr = NULL; |
| 19 | |
| 20 | static int nblocks = 0; |
| 21 | static int n_in_ops = 0; |
| 22 | |
| 23 | extern ssp1601_t *ssp; |
| 24 | |
| 25 | #define rPC ssp->gr[SSP_PC].h |
| 26 | #define rPMC ssp->gr[SSP_PMC] |
| 27 | |
| 28 | #define SSP_FLAG_Z (1<<0xd) |
| 29 | #define SSP_FLAG_N (1<<0xf) |
| 30 | |
| 31 | #ifndef ARM |
| 32 | //#define DUMP_BLOCK 0x0c9a |
| 33 | void ssp_drc_next(void){} |
| 34 | void ssp_drc_next_patch(void){} |
| 35 | void ssp_drc_end(void){} |
| 36 | #endif |
| 37 | |
| 38 | #include "gen_arm.c" |
| 39 | |
| 40 | // ----------------------------------------------------- |
| 41 | |
| 42 | static int get_inc(int mode) |
| 43 | { |
| 44 | int inc = (mode >> 11) & 7; |
| 45 | if (inc != 0) { |
| 46 | if (inc != 7) inc--; |
| 47 | inc = 1 << inc; // 0 1 2 4 8 16 32 128 |
| 48 | if (mode & 0x8000) inc = -inc; // decrement mode |
| 49 | } |
| 50 | return inc; |
| 51 | } |
| 52 | |
| 53 | u32 ssp_pm_read(int reg) |
| 54 | { |
| 55 | u32 d = 0, mode; |
| 56 | |
| 57 | if (ssp->emu_status & SSP_PMC_SET) |
| 58 | { |
| 59 | ssp->pmac_read[reg] = rPMC.v; |
| 60 | ssp->emu_status &= ~SSP_PMC_SET; |
| 61 | return 0; |
| 62 | } |
| 63 | |
| 64 | // just in case |
| 65 | ssp->emu_status &= ~SSP_PMC_HAVE_ADDR; |
| 66 | |
| 67 | mode = ssp->pmac_read[reg]>>16; |
| 68 | if ((mode & 0xfff0) == 0x0800) // ROM |
| 69 | { |
| 70 | d = ((unsigned short *)Pico.rom)[ssp->pmac_read[reg]&0xfffff]; |
| 71 | ssp->pmac_read[reg] += 1; |
| 72 | } |
| 73 | else if ((mode & 0x47ff) == 0x0018) // DRAM |
| 74 | { |
| 75 | unsigned short *dram = (unsigned short *)svp->dram; |
| 76 | int inc = get_inc(mode); |
| 77 | d = dram[ssp->pmac_read[reg]&0xffff]; |
| 78 | ssp->pmac_read[reg] += inc; |
| 79 | } |
| 80 | |
| 81 | // PMC value corresponds to last PMR accessed |
| 82 | rPMC.v = ssp->pmac_read[reg]; |
| 83 | |
| 84 | return d; |
| 85 | } |
| 86 | |
| 87 | #define overwrite_write(dst, d) \ |
| 88 | { \ |
| 89 | if (d & 0xf000) { dst &= ~0xf000; dst |= d & 0xf000; } \ |
| 90 | if (d & 0x0f00) { dst &= ~0x0f00; dst |= d & 0x0f00; } \ |
| 91 | if (d & 0x00f0) { dst &= ~0x00f0; dst |= d & 0x00f0; } \ |
| 92 | if (d & 0x000f) { dst &= ~0x000f; dst |= d & 0x000f; } \ |
| 93 | } |
| 94 | |
| 95 | void ssp_pm_write(u32 d, int reg) |
| 96 | { |
| 97 | unsigned short *dram; |
| 98 | int mode, addr; |
| 99 | |
| 100 | if (ssp->emu_status & SSP_PMC_SET) |
| 101 | { |
| 102 | ssp->pmac_write[reg] = rPMC.v; |
| 103 | ssp->emu_status &= ~SSP_PMC_SET; |
| 104 | return; |
| 105 | } |
| 106 | |
| 107 | // just in case |
| 108 | ssp->emu_status &= ~SSP_PMC_HAVE_ADDR; |
| 109 | |
| 110 | dram = (unsigned short *)svp->dram; |
| 111 | mode = ssp->pmac_write[reg]>>16; |
| 112 | addr = ssp->pmac_write[reg]&0xffff; |
| 113 | if ((mode & 0x43ff) == 0x0018) // DRAM |
| 114 | { |
| 115 | int inc = get_inc(mode); |
| 116 | if (mode & 0x0400) { |
| 117 | overwrite_write(dram[addr], d); |
| 118 | } else dram[addr] = d; |
| 119 | ssp->pmac_write[reg] += inc; |
| 120 | } |
| 121 | else if ((mode & 0xfbff) == 0x4018) // DRAM, cell inc |
| 122 | { |
| 123 | if (mode & 0x0400) { |
| 124 | overwrite_write(dram[addr], d); |
| 125 | } else dram[addr] = d; |
| 126 | ssp->pmac_write[reg] += (addr&1) ? 0x1f : 1; |
| 127 | } |
| 128 | else if ((mode & 0x47ff) == 0x001c) // IRAM |
| 129 | { |
| 130 | int inc = get_inc(mode); |
| 131 | ((unsigned short *)svp->iram_rom)[addr&0x3ff] = d; |
| 132 | ssp->pmac_write[reg] += inc; |
| 133 | ssp->drc.iram_dirty = 1; |
| 134 | } |
| 135 | |
| 136 | rPMC.v = ssp->pmac_write[reg]; |
| 137 | } |
| 138 | |
| 139 | |
| 140 | // ----------------------------------------------------- |
| 141 | |
| 142 | // 14 IRAM blocks |
| 143 | static unsigned char iram_context_map[] = |
| 144 | { |
| 145 | 0, 0, 0, 0, 1, 0, 0, 0, // 04 |
| 146 | 0, 0, 0, 0, 0, 0, 2, 0, // 0e |
| 147 | 0, 0, 0, 0, 0, 3, 0, 4, // 15 17 |
| 148 | 5, 0, 0, 6, 0, 7, 0, 0, // 18 1b 1d |
| 149 | 8, 9, 0, 0, 0,10, 0, 0, // 20 21 25 |
| 150 | 0, 0, 0, 0, 0, 0, 0, 0, |
| 151 | 0, 0,11, 0, 0,12, 0, 0, // 32 35 |
| 152 | 13,14, 0, 0, 0, 0, 0, 0 // 38 39 |
| 153 | }; |
| 154 | |
| 155 | int ssp_get_iram_context(void) |
| 156 | { |
| 157 | unsigned char *ir = (unsigned char *)svp->iram_rom; |
| 158 | int val1, val = ir[0x083^1] + ir[0x4FA^1] + ir[0x5F7^1] + ir[0x47B^1]; |
| 159 | val1 = iram_context_map[(val>>1)&0x3f]; |
| 160 | |
| 161 | if (val1 == 0) { |
| 162 | elprintf(EL_ANOMALY, "svp: iram ctx val: %02x PC=%04x\n", (val>>1)&0x3f, rPC); |
| 163 | //debug_dump2file(name, svp->iram_rom, 0x800); |
| 164 | //exit(1); |
| 165 | } |
| 166 | return val1; |
| 167 | } |
| 168 | |
| 169 | // ----------------------------------------------------- |
| 170 | |
| 171 | /* regs with known values */ |
| 172 | static struct |
| 173 | { |
| 174 | ssp_reg_t gr[8]; |
| 175 | unsigned char r[8]; |
| 176 | unsigned int pmac_read[5]; |
| 177 | unsigned int pmac_write[5]; |
| 178 | ssp_reg_t pmc; |
| 179 | unsigned int emu_status; |
| 180 | } known_regs; |
| 181 | |
| 182 | #define KRREG_X (1 << SSP_X) |
| 183 | #define KRREG_Y (1 << SSP_Y) |
| 184 | #define KRREG_A (1 << SSP_A) /* AH only */ |
| 185 | #define KRREG_ST (1 << SSP_ST) |
| 186 | #define KRREG_STACK (1 << SSP_STACK) |
| 187 | #define KRREG_PC (1 << SSP_PC) |
| 188 | #define KRREG_P (1 << SSP_P) |
| 189 | #define KRREG_PR0 (1 << 8) |
| 190 | #define KRREG_PR4 (1 << 12) |
| 191 | #define KRREG_AL (1 << 16) |
| 192 | #define KRREG_PMCM (1 << 18) /* only mode word of PMC */ |
| 193 | #define KRREG_PMC (1 << 19) |
| 194 | #define KRREG_PM0R (1 << 20) |
| 195 | #define KRREG_PM1R (1 << 21) |
| 196 | #define KRREG_PM2R (1 << 22) |
| 197 | #define KRREG_PM3R (1 << 23) |
| 198 | #define KRREG_PM4R (1 << 24) |
| 199 | #define KRREG_PM0W (1 << 25) |
| 200 | #define KRREG_PM1W (1 << 26) |
| 201 | #define KRREG_PM2W (1 << 27) |
| 202 | #define KRREG_PM3W (1 << 28) |
| 203 | #define KRREG_PM4W (1 << 29) |
| 204 | |
| 205 | /* bitfield of known register values */ |
| 206 | static u32 known_regb = 0; |
| 207 | |
| 208 | /* known vals, which need to be flushed |
| 209 | * (only ST, P, r0-r7, PMCx, PMxR, PMxW) |
| 210 | * ST means flags are being held in ARM PSR |
| 211 | * P means that it needs to be recalculated |
| 212 | */ |
| 213 | static u32 dirty_regb = 0; |
| 214 | |
| 215 | /* known values of host regs. |
| 216 | * -1 - unknown |
| 217 | * 000000-00ffff - 16bit value |
| 218 | * 100000-10ffff - base reg (r7) + 16bit val |
| 219 | * 0r0000 - means reg (low) eq gr[r].h, r != AL |
| 220 | */ |
| 221 | static int hostreg_r[4]; |
| 222 | |
| 223 | static void hostreg_clear(void) |
| 224 | { |
| 225 | int i; |
| 226 | for (i = 0; i < 4; i++) |
| 227 | hostreg_r[i] = -1; |
| 228 | } |
| 229 | |
| 230 | static void hostreg_sspreg_changed(int sspreg) |
| 231 | { |
| 232 | int i; |
| 233 | for (i = 0; i < 4; i++) |
| 234 | if (hostreg_r[i] == (sspreg<<16)) hostreg_r[i] = -1; |
| 235 | } |
| 236 | |
| 237 | |
| 238 | #define PROGRAM(x) ((unsigned short *)svp->iram_rom)[x] |
| 239 | #define PROGRAM_P(x) ((unsigned short *)svp->iram_rom + (x)) |
| 240 | |
| 241 | void tr_unhandled(void) |
| 242 | { |
| 243 | //FILE *f = fopen("tcache.bin", "wb"); |
| 244 | //fwrite(tcache, 1, (tcache_ptr - tcache)*4, f); |
| 245 | //fclose(f); |
| 246 | elprintf(EL_ANOMALY, "unhandled @ %04x\n", known_regs.gr[SSP_PC].h<<1); |
| 247 | //exit(1); |
| 248 | } |
| 249 | |
| 250 | /* update P, if needed. Trashes r0 */ |
| 251 | static void tr_flush_dirty_P(void) |
| 252 | { |
| 253 | // TODO: const regs |
| 254 | if (!(dirty_regb & KRREG_P)) return; |
| 255 | EOP_MOV_REG_ASR(10, 4, 16); // mov r10, r4, asr #16 |
| 256 | EOP_MOV_REG_LSL( 0, 4, 16); // mov r0, r4, lsl #16 |
| 257 | EOP_MOV_REG_ASR( 0, 0, 15); // mov r0, r0, asr #15 |
| 258 | EOP_MUL(10, 0, 10); // mul r10, r0, r10 |
| 259 | dirty_regb &= ~KRREG_P; |
| 260 | hostreg_r[0] = -1; |
| 261 | } |
| 262 | |
| 263 | /* write dirty pr to host reg. Nothing is trashed */ |
| 264 | static void tr_flush_dirty_pr(int r) |
| 265 | { |
| 266 | int ror = 0, reg; |
| 267 | |
| 268 | if (!(dirty_regb & (1 << (r+8)))) return; |
| 269 | |
| 270 | switch (r&3) { |
| 271 | case 0: ror = 0; break; |
| 272 | case 1: ror = 24/2; break; |
| 273 | case 2: ror = 16/2; break; |
| 274 | } |
| 275 | reg = (r < 4) ? 8 : 9; |
| 276 | EOP_BIC_IMM(reg,reg,ror,0xff); |
| 277 | if (known_regs.r[r] != 0) |
| 278 | EOP_ORR_IMM(reg,reg,ror,known_regs.r[r]); |
| 279 | dirty_regb &= ~(1 << (r+8)); |
| 280 | } |
| 281 | |
| 282 | /* write all dirty pr0-pr7 to host regs. Nothing is trashed */ |
| 283 | static void tr_flush_dirty_prs(void) |
| 284 | { |
| 285 | int i, ror = 0, reg; |
| 286 | int dirty = dirty_regb >> 8; |
| 287 | if ((dirty&7) == 7) { |
| 288 | emit_mov_const(A_COND_AL, 8, known_regs.r[0]|(known_regs.r[1]<<8)|(known_regs.r[2]<<16)); |
| 289 | dirty &= ~7; |
| 290 | } |
| 291 | if ((dirty&0x70) == 0x70) { |
| 292 | emit_mov_const(A_COND_AL, 9, known_regs.r[4]|(known_regs.r[5]<<8)|(known_regs.r[6]<<16)); |
| 293 | dirty &= ~0x70; |
| 294 | } |
| 295 | /* r0-r7 */ |
| 296 | for (i = 0; dirty && i < 8; i++, dirty >>= 1) |
| 297 | { |
| 298 | if (!(dirty&1)) continue; |
| 299 | switch (i&3) { |
| 300 | case 0: ror = 0; break; |
| 301 | case 1: ror = 24/2; break; |
| 302 | case 2: ror = 16/2; break; |
| 303 | } |
| 304 | reg = (i < 4) ? 8 : 9; |
| 305 | EOP_BIC_IMM(reg,reg,ror,0xff); |
| 306 | if (known_regs.r[i] != 0) |
| 307 | EOP_ORR_IMM(reg,reg,ror,known_regs.r[i]); |
| 308 | } |
| 309 | dirty_regb &= ~0xff00; |
| 310 | } |
| 311 | |
| 312 | /* write dirty pr and "forget" it. Nothing is trashed. */ |
| 313 | static void tr_release_pr(int r) |
| 314 | { |
| 315 | tr_flush_dirty_pr(r); |
| 316 | known_regb &= ~(1 << (r+8)); |
| 317 | } |
| 318 | |
| 319 | /* fush ARM PSR to r6. Trashes r1 */ |
| 320 | static void tr_flush_dirty_ST(void) |
| 321 | { |
| 322 | if (!(dirty_regb & KRREG_ST)) return; |
| 323 | EOP_BIC_IMM(6,6,0,0x0f); |
| 324 | EOP_MRS(1); |
| 325 | EOP_ORR_REG_LSR(6,6,1,28); |
| 326 | dirty_regb &= ~KRREG_ST; |
| 327 | hostreg_r[1] = -1; |
| 328 | } |
| 329 | |
| 330 | /* inverse of above. Trashes r1 */ |
| 331 | static void tr_make_dirty_ST(void) |
| 332 | { |
| 333 | if (dirty_regb & KRREG_ST) return; |
| 334 | if (known_regb & KRREG_ST) { |
| 335 | int flags = 0; |
| 336 | if (known_regs.gr[SSP_ST].h & SSP_FLAG_N) flags |= 8; |
| 337 | if (known_regs.gr[SSP_ST].h & SSP_FLAG_Z) flags |= 4; |
| 338 | EOP_MSR_IMM(4/2, flags); |
| 339 | } else { |
| 340 | EOP_MOV_REG_LSL(1, 6, 28); |
| 341 | EOP_MSR_REG(1); |
| 342 | hostreg_r[1] = -1; |
| 343 | } |
| 344 | dirty_regb |= KRREG_ST; |
| 345 | } |
| 346 | |
| 347 | /* load 16bit val into host reg r0-r3. Nothing is trashed */ |
| 348 | static void tr_mov16(int r, int val) |
| 349 | { |
| 350 | if (hostreg_r[r] != val) { |
| 351 | emit_mov_const(A_COND_AL, r, val); |
| 352 | hostreg_r[r] = val; |
| 353 | } |
| 354 | } |
| 355 | |
| 356 | static void tr_mov16_cond(int cond, int r, int val) |
| 357 | { |
| 358 | emit_mov_const(cond, r, val); |
| 359 | hostreg_r[r] = -1; |
| 360 | } |
| 361 | |
| 362 | /* trashes r1 */ |
| 363 | static void tr_flush_dirty_pmcrs(void) |
| 364 | { |
| 365 | u32 i, val = (u32)-1; |
| 366 | if (!(dirty_regb & 0x3ff80000)) return; |
| 367 | |
| 368 | if (dirty_regb & KRREG_PMC) { |
| 369 | val = known_regs.pmc.v; |
| 370 | emit_mov_const(A_COND_AL, 1, val); |
| 371 | EOP_STR_IMM(1,7,0x400+SSP_PMC*4); |
| 372 | |
| 373 | if (known_regs.emu_status & (SSP_PMC_SET|SSP_PMC_HAVE_ADDR)) { |
| 374 | elprintf(EL_ANOMALY, "!! SSP_PMC_SET|SSP_PMC_HAVE_ADDR set on flush\n"); |
| 375 | tr_unhandled(); |
| 376 | } |
| 377 | } |
| 378 | for (i = 0; i < 5; i++) |
| 379 | { |
| 380 | if (dirty_regb & (1 << (20+i))) { |
| 381 | if (val != known_regs.pmac_read[i]) { |
| 382 | val = known_regs.pmac_read[i]; |
| 383 | emit_mov_const(A_COND_AL, 1, val); |
| 384 | } |
| 385 | EOP_STR_IMM(1,7,0x454+i*4); // pmac_read |
| 386 | } |
| 387 | if (dirty_regb & (1 << (25+i))) { |
| 388 | if (val != known_regs.pmac_write[i]) { |
| 389 | val = known_regs.pmac_write[i]; |
| 390 | emit_mov_const(A_COND_AL, 1, val); |
| 391 | } |
| 392 | EOP_STR_IMM(1,7,0x46c+i*4); // pmac_write |
| 393 | } |
| 394 | } |
| 395 | dirty_regb &= ~0x3ff80000; |
| 396 | hostreg_r[1] = -1; |
| 397 | } |
| 398 | |
| 399 | /* read bank word to r0 (upper bits zero). Thrashes r1. */ |
| 400 | static void tr_bank_read(int addr) /* word addr 0-0x1ff */ |
| 401 | { |
| 402 | int breg = 7; |
| 403 | if (addr > 0x7f) { |
| 404 | if (hostreg_r[1] != (0x100000|((addr&0x180)<<1))) { |
| 405 | EOP_ADD_IMM(1,7,30/2,(addr&0x180)>>1); // add r1, r7, ((op&0x180)<<1) |
| 406 | hostreg_r[1] = 0x100000|((addr&0x180)<<1); |
| 407 | } |
| 408 | breg = 1; |
| 409 | } |
| 410 | EOP_LDRH_IMM(0,breg,(addr&0x7f)<<1); // ldrh r0, [r1, (op&0x7f)<<1] |
| 411 | hostreg_r[0] = -1; |
| 412 | } |
| 413 | |
| 414 | /* write r0 to bank. Trashes r1. */ |
| 415 | static void tr_bank_write(int addr) |
| 416 | { |
| 417 | int breg = 7; |
| 418 | if (addr > 0x7f) { |
| 419 | if (hostreg_r[1] != (0x100000|((addr&0x180)<<1))) { |
| 420 | EOP_ADD_IMM(1,7,30/2,(addr&0x180)>>1); // add r1, r7, ((op&0x180)<<1) |
| 421 | hostreg_r[1] = 0x100000|((addr&0x180)<<1); |
| 422 | } |
| 423 | breg = 1; |
| 424 | } |
| 425 | EOP_STRH_IMM(0,breg,(addr&0x7f)<<1); // strh r0, [r1, (op&0x7f)<<1] |
| 426 | } |
| 427 | |
| 428 | /* handle RAM bank pointer modifiers. if need_modulo, trash r1-r3, else nothing */ |
| 429 | static void tr_ptrr_mod(int r, int mod, int need_modulo, int count) |
| 430 | { |
| 431 | int modulo_shift = -1; /* unknown */ |
| 432 | |
| 433 | if (mod == 0) return; |
| 434 | |
| 435 | if (!need_modulo || mod == 1) // +! |
| 436 | modulo_shift = 8; |
| 437 | else if (need_modulo && (known_regb & KRREG_ST)) { |
| 438 | modulo_shift = known_regs.gr[SSP_ST].h & 7; |
| 439 | if (modulo_shift == 0) modulo_shift = 8; |
| 440 | } |
| 441 | |
| 442 | if (modulo_shift == -1) |
| 443 | { |
| 444 | int reg = (r < 4) ? 8 : 9; |
| 445 | tr_release_pr(r); |
| 446 | if (dirty_regb & KRREG_ST) { |
| 447 | // avoid flushing ARM flags |
| 448 | EOP_AND_IMM(1, 6, 0, 0x70); |
| 449 | EOP_SUB_IMM(1, 1, 0, 0x10); |
| 450 | EOP_AND_IMM(1, 1, 0, 0x70); |
| 451 | EOP_ADD_IMM(1, 1, 0, 0x10); |
| 452 | } else { |
| 453 | EOP_C_DOP_IMM(A_COND_AL,A_OP_AND,1,6,1,0,0x70); // ands r1, r6, #0x70 |
| 454 | EOP_C_DOP_IMM(A_COND_EQ,A_OP_MOV,0,0,1,0,0x80); // moveq r1, #0x80 |
| 455 | } |
| 456 | EOP_MOV_REG_LSR(1, 1, 4); // mov r1, r1, lsr #4 |
| 457 | EOP_RSB_IMM(2, 1, 0, 8); // rsb r1, r1, #8 |
| 458 | EOP_MOV_IMM(3, 8/2, count); // mov r3, #0x01000000 |
| 459 | if (r&3) |
| 460 | EOP_ADD_IMM(1, 1, 0, (r&3)*8); // add r1, r1, #(r&3)*8 |
| 461 | EOP_MOV_REG2_ROR(reg,reg,1); // mov reg, reg, ror r1 |
| 462 | if (mod == 2) |
| 463 | EOP_SUB_REG2_LSL(reg,reg,3,2); // sub reg, reg, #0x01000000 << r2 |
| 464 | else EOP_ADD_REG2_LSL(reg,reg,3,2); |
| 465 | EOP_RSB_IMM(1, 1, 0, 32); // rsb r1, r1, #32 |
| 466 | EOP_MOV_REG2_ROR(reg,reg,1); // mov reg, reg, ror r1 |
| 467 | hostreg_r[1] = hostreg_r[2] = hostreg_r[3] = -1; |
| 468 | } |
| 469 | else if (known_regb & (1 << (r + 8))) |
| 470 | { |
| 471 | int modulo = (1 << modulo_shift) - 1; |
| 472 | if (mod == 2) |
| 473 | known_regs.r[r] = (known_regs.r[r] & ~modulo) | ((known_regs.r[r] - count) & modulo); |
| 474 | else known_regs.r[r] = (known_regs.r[r] & ~modulo) | ((known_regs.r[r] + count) & modulo); |
| 475 | } |
| 476 | else |
| 477 | { |
| 478 | int reg = (r < 4) ? 8 : 9; |
| 479 | int ror = ((r&3) + 1)*8 - (8 - modulo_shift); |
| 480 | EOP_MOV_REG_ROR(reg,reg,ror); |
| 481 | // {add|sub} reg, reg, #1<<shift |
| 482 | EOP_C_DOP_IMM(A_COND_AL,(mod==2)?A_OP_SUB:A_OP_ADD,0,reg,reg, 8/2, count << (8 - modulo_shift)); |
| 483 | EOP_MOV_REG_ROR(reg,reg,32-ror); |
| 484 | } |
| 485 | } |
| 486 | |
| 487 | /* handle writes r0 to (rX). Trashes r1. |
| 488 | * fortunately we can ignore modulo increment modes for writes. */ |
| 489 | static void tr_rX_write(int op) |
| 490 | { |
| 491 | if ((op&3) == 3) |
| 492 | { |
| 493 | int mod = (op>>2) & 3; // direct addressing |
| 494 | tr_bank_write((op & 0x100) + mod); |
| 495 | } |
| 496 | else |
| 497 | { |
| 498 | int r = (op&3) | ((op>>6)&4); |
| 499 | if (known_regb & (1 << (r + 8))) { |
| 500 | tr_bank_write((op&0x100) | known_regs.r[r]); |
| 501 | } else { |
| 502 | int reg = (r < 4) ? 8 : 9; |
| 503 | int ror = ((4 - (r&3))*8) & 0x1f; |
| 504 | EOP_AND_IMM(1,reg,ror/2,0xff); // and r1, r{7,8}, <mask> |
| 505 | if (r >= 4) |
| 506 | EOP_ORR_IMM(1,1,((ror-8)&0x1f)/2,1); // orr r1, r1, 1<<shift |
| 507 | if (r&3) EOP_ADD_REG_LSR(1,7,1, (r&3)*8-1); // add r1, r7, r1, lsr #lsr |
| 508 | else EOP_ADD_REG_LSL(1,7,1,1); |
| 509 | EOP_STRH_SIMPLE(0,1); // strh r0, [r1] |
| 510 | hostreg_r[1] = -1; |
| 511 | } |
| 512 | tr_ptrr_mod(r, (op>>2) & 3, 0, 1); |
| 513 | } |
| 514 | } |
| 515 | |
| 516 | /* read (rX) to r0. Trashes r1-r3. */ |
| 517 | static void tr_rX_read(int r, int mod) |
| 518 | { |
| 519 | if ((r&3) == 3) |
| 520 | { |
| 521 | tr_bank_read(((r << 6) & 0x100) + mod); // direct addressing |
| 522 | } |
| 523 | else |
| 524 | { |
| 525 | if (known_regb & (1 << (r + 8))) { |
| 526 | tr_bank_read(((r << 6) & 0x100) | known_regs.r[r]); |
| 527 | } else { |
| 528 | int reg = (r < 4) ? 8 : 9; |
| 529 | int ror = ((4 - (r&3))*8) & 0x1f; |
| 530 | EOP_AND_IMM(1,reg,ror/2,0xff); // and r1, r{7,8}, <mask> |
| 531 | if (r >= 4) |
| 532 | EOP_ORR_IMM(1,1,((ror-8)&0x1f)/2,1); // orr r1, r1, 1<<shift |
| 533 | if (r&3) EOP_ADD_REG_LSR(1,7,1, (r&3)*8-1); // add r1, r7, r1, lsr #lsr |
| 534 | else EOP_ADD_REG_LSL(1,7,1,1); |
| 535 | EOP_LDRH_SIMPLE(0,1); // ldrh r0, [r1] |
| 536 | hostreg_r[0] = hostreg_r[1] = -1; |
| 537 | } |
| 538 | tr_ptrr_mod(r, mod, 1, 1); |
| 539 | } |
| 540 | } |
| 541 | |
| 542 | /* read ((rX)) to r0. Trashes r1,r2. */ |
| 543 | static void tr_rX_read2(int op) |
| 544 | { |
| 545 | int r = (op&3) | ((op>>6)&4); // src |
| 546 | |
| 547 | if ((r&3) == 3) { |
| 548 | tr_bank_read((op&0x100) | ((op>>2)&3)); |
| 549 | } else if (known_regb & (1 << (r+8))) { |
| 550 | tr_bank_read((op&0x100) | known_regs.r[r]); |
| 551 | } else { |
| 552 | int reg = (r < 4) ? 8 : 9; |
| 553 | int ror = ((4 - (r&3))*8) & 0x1f; |
| 554 | EOP_AND_IMM(1,reg,ror/2,0xff); // and r1, r{7,8}, <mask> |
| 555 | if (r >= 4) |
| 556 | EOP_ORR_IMM(1,1,((ror-8)&0x1f)/2,1); // orr r1, r1, 1<<shift |
| 557 | if (r&3) EOP_ADD_REG_LSR(1,7,1, (r&3)*8-1); // add r1, r7, r1, lsr #lsr |
| 558 | else EOP_ADD_REG_LSL(1,7,1,1); |
| 559 | EOP_LDRH_SIMPLE(0,1); // ldrh r0, [r1] |
| 560 | } |
| 561 | EOP_LDR_IMM(2,7,0x48c); // ptr_iram_rom |
| 562 | EOP_ADD_REG_LSL(2,2,0,1); // add r2, r2, r0, lsl #1 |
| 563 | EOP_ADD_IMM(0,0,0,1); // add r0, r0, #1 |
| 564 | if ((r&3) == 3) { |
| 565 | tr_bank_write((op&0x100) | ((op>>2)&3)); |
| 566 | } else if (known_regb & (1 << (r+8))) { |
| 567 | tr_bank_write((op&0x100) | known_regs.r[r]); |
| 568 | } else { |
| 569 | EOP_STRH_SIMPLE(0,1); // strh r0, [r1] |
| 570 | hostreg_r[1] = -1; |
| 571 | } |
| 572 | EOP_LDRH_SIMPLE(0,2); // ldrh r0, [r2] |
| 573 | hostreg_r[0] = hostreg_r[2] = -1; |
| 574 | } |
| 575 | |
| 576 | // check if AL is going to be used later in block |
| 577 | static int tr_predict_al_need(void) |
| 578 | { |
| 579 | int tmpv, tmpv2, op, pc = known_regs.gr[SSP_PC].h; |
| 580 | |
| 581 | while (1) |
| 582 | { |
| 583 | op = PROGRAM(pc); |
| 584 | switch (op >> 9) |
| 585 | { |
| 586 | // ld d, s |
| 587 | case 0x00: |
| 588 | tmpv2 = (op >> 4) & 0xf; // dst |
| 589 | tmpv = op & 0xf; // src |
| 590 | if ((tmpv2 == SSP_A && tmpv == SSP_P) || tmpv2 == SSP_AL) // ld A, P; ld AL, * |
| 591 | return 0; |
| 592 | break; |
| 593 | |
| 594 | // ld (ri), s |
| 595 | case 0x02: |
| 596 | // ld ri, s |
| 597 | case 0x0a: |
| 598 | // OP a, s |
| 599 | case 0x10: case 0x30: case 0x40: case 0x60: case 0x70: |
| 600 | tmpv = op & 0xf; // src |
| 601 | if (tmpv == SSP_AL) // OP *, AL |
| 602 | return 1; |
| 603 | break; |
| 604 | |
| 605 | case 0x04: |
| 606 | case 0x06: |
| 607 | case 0x14: |
| 608 | case 0x34: |
| 609 | case 0x44: |
| 610 | case 0x64: |
| 611 | case 0x74: pc++; break; |
| 612 | |
| 613 | // call cond, addr |
| 614 | case 0x24: |
| 615 | // bra cond, addr |
| 616 | case 0x26: |
| 617 | // mod cond, op |
| 618 | case 0x48: |
| 619 | // mpys? |
| 620 | case 0x1b: |
| 621 | // mpya (rj), (ri), b |
| 622 | case 0x4b: return 1; |
| 623 | |
| 624 | // mld (rj), (ri), b |
| 625 | case 0x5b: return 0; // cleared anyway |
| 626 | |
| 627 | // and A, * |
| 628 | case 0x50: |
| 629 | tmpv = op & 0xf; // src |
| 630 | if (tmpv == SSP_AL) return 1; |
| 631 | case 0x51: case 0x53: case 0x54: case 0x55: case 0x59: case 0x5c: |
| 632 | return 0; |
| 633 | } |
| 634 | pc++; |
| 635 | } |
| 636 | } |
| 637 | |
| 638 | |
| 639 | /* get ARM cond which would mean that SSP cond is satisfied. No trash. */ |
| 640 | static int tr_cond_check(int op) |
| 641 | { |
| 642 | int f = (op & 0x100) >> 8; |
| 643 | switch (op&0xf0) { |
| 644 | case 0x00: return A_COND_AL; /* always true */ |
| 645 | case 0x50: /* Z matches f(?) bit */ |
| 646 | if (dirty_regb & KRREG_ST) return f ? A_COND_EQ : A_COND_NE; |
| 647 | EOP_TST_IMM(6, 0, 4); |
| 648 | return f ? A_COND_NE : A_COND_EQ; |
| 649 | case 0x70: /* N matches f(?) bit */ |
| 650 | if (dirty_regb & KRREG_ST) return f ? A_COND_MI : A_COND_PL; |
| 651 | EOP_TST_IMM(6, 0, 8); |
| 652 | return f ? A_COND_NE : A_COND_EQ; |
| 653 | default: |
| 654 | elprintf(EL_ANOMALY, "unimplemented cond?\n"); |
| 655 | tr_unhandled(); |
| 656 | return 0; |
| 657 | } |
| 658 | } |
| 659 | |
| 660 | static int tr_neg_cond(int cond) |
| 661 | { |
| 662 | switch (cond) { |
| 663 | case A_COND_AL: elprintf(EL_ANOMALY, "neg for AL?\n"); exit(1); |
| 664 | case A_COND_EQ: return A_COND_NE; |
| 665 | case A_COND_NE: return A_COND_EQ; |
| 666 | case A_COND_MI: return A_COND_PL; |
| 667 | case A_COND_PL: return A_COND_MI; |
| 668 | default: elprintf(EL_ANOMALY, "bad cond for neg\n"); exit(1); |
| 669 | } |
| 670 | return 0; |
| 671 | } |
| 672 | |
| 673 | static int tr_aop_ssp2arm(int op) |
| 674 | { |
| 675 | switch (op) { |
| 676 | case 1: return A_OP_SUB; |
| 677 | case 3: return A_OP_CMP; |
| 678 | case 4: return A_OP_ADD; |
| 679 | case 5: return A_OP_AND; |
| 680 | case 6: return A_OP_ORR; |
| 681 | case 7: return A_OP_EOR; |
| 682 | } |
| 683 | |
| 684 | tr_unhandled(); |
| 685 | return 0; |
| 686 | } |
| 687 | |
| 688 | // ----------------------------------------------------- |
| 689 | |
| 690 | //@ r4: XXYY |
| 691 | //@ r5: A |
| 692 | //@ r6: STACK and emu flags |
| 693 | //@ r7: SSP context |
| 694 | //@ r10: P |
| 695 | |
| 696 | // read general reg to r0. Trashes r1 |
| 697 | static void tr_GR0_to_r0(int op) |
| 698 | { |
| 699 | tr_mov16(0, 0xffff); |
| 700 | } |
| 701 | |
| 702 | static void tr_X_to_r0(int op) |
| 703 | { |
| 704 | if (hostreg_r[0] != (SSP_X<<16)) { |
| 705 | EOP_MOV_REG_LSR(0, 4, 16); // mov r0, r4, lsr #16 |
| 706 | hostreg_r[0] = SSP_X<<16; |
| 707 | } |
| 708 | } |
| 709 | |
| 710 | static void tr_Y_to_r0(int op) |
| 711 | { |
| 712 | if (hostreg_r[0] != (SSP_Y<<16)) { |
| 713 | EOP_MOV_REG_SIMPLE(0, 4); // mov r0, r4 |
| 714 | hostreg_r[0] = SSP_Y<<16; |
| 715 | } |
| 716 | } |
| 717 | |
| 718 | static void tr_A_to_r0(int op) |
| 719 | { |
| 720 | if (hostreg_r[0] != (SSP_A<<16)) { |
| 721 | EOP_MOV_REG_LSR(0, 5, 16); // mov r0, r5, lsr #16 @ AH |
| 722 | hostreg_r[0] = SSP_A<<16; |
| 723 | } |
| 724 | } |
| 725 | |
| 726 | static void tr_ST_to_r0(int op) |
| 727 | { |
| 728 | // VR doesn't need much accuracy here.. |
| 729 | EOP_MOV_REG_LSR(0, 6, 4); // mov r0, r6, lsr #4 |
| 730 | EOP_AND_IMM(0, 0, 0, 0x67); // and r0, r0, #0x67 |
| 731 | hostreg_r[0] = -1; |
| 732 | } |
| 733 | |
| 734 | static void tr_STACK_to_r0(int op) |
| 735 | { |
| 736 | // 448 |
| 737 | EOP_SUB_IMM(6, 6, 8/2, 0x20); // sub r6, r6, #1<<29 |
| 738 | EOP_ADD_IMM(1, 7, 24/2, 0x04); // add r1, r7, 0x400 |
| 739 | EOP_ADD_IMM(1, 1, 0, 0x48); // add r1, r1, 0x048 |
| 740 | EOP_ADD_REG_LSR(1, 1, 6, 28); // add r1, r1, r6, lsr #28 |
| 741 | EOP_LDRH_SIMPLE(0, 1); // ldrh r0, [r1] |
| 742 | hostreg_r[0] = hostreg_r[1] = -1; |
| 743 | } |
| 744 | |
| 745 | static void tr_PC_to_r0(int op) |
| 746 | { |
| 747 | tr_mov16(0, known_regs.gr[SSP_PC].h); |
| 748 | } |
| 749 | |
| 750 | static void tr_P_to_r0(int op) |
| 751 | { |
| 752 | tr_flush_dirty_P(); |
| 753 | EOP_MOV_REG_LSR(0, 10, 16); // mov r0, r10, lsr #16 |
| 754 | hostreg_r[0] = -1; |
| 755 | } |
| 756 | |
| 757 | static void tr_AL_to_r0(int op) |
| 758 | { |
| 759 | if (op == 0x000f) { |
| 760 | if (known_regb & KRREG_PMC) { |
| 761 | known_regs.emu_status &= ~(SSP_PMC_SET|SSP_PMC_HAVE_ADDR); |
| 762 | } else { |
| 763 | EOP_LDR_IMM(0,7,0x484); // ldr r1, [r7, #0x484] // emu_status |
| 764 | EOP_BIC_IMM(0,0,0,SSP_PMC_SET|SSP_PMC_HAVE_ADDR); |
| 765 | EOP_STR_IMM(0,7,0x484); |
| 766 | } |
| 767 | } |
| 768 | |
| 769 | if (hostreg_r[0] != (SSP_AL<<16)) { |
| 770 | EOP_MOV_REG_SIMPLE(0, 5); // mov r0, r5 |
| 771 | hostreg_r[0] = SSP_AL<<16; |
| 772 | } |
| 773 | } |
| 774 | |
| 775 | static void tr_PMX_to_r0(int reg) |
| 776 | { |
| 777 | if ((known_regb & KRREG_PMC) && (known_regs.emu_status & SSP_PMC_SET)) |
| 778 | { |
| 779 | known_regs.pmac_read[reg] = known_regs.pmc.v; |
| 780 | known_regs.emu_status &= ~SSP_PMC_SET; |
| 781 | known_regb |= 1 << (20+reg); |
| 782 | dirty_regb |= 1 << (20+reg); |
| 783 | return; |
| 784 | } |
| 785 | |
| 786 | if ((known_regb & KRREG_PMC) && (known_regb & (1 << (20+reg)))) |
| 787 | { |
| 788 | u32 pmcv = known_regs.pmac_read[reg]; |
| 789 | int mode = pmcv>>16; |
| 790 | known_regs.emu_status &= ~SSP_PMC_HAVE_ADDR; |
| 791 | |
| 792 | if ((mode & 0xfff0) == 0x0800) |
| 793 | { |
| 794 | EOP_LDR_IMM(1,7,0x488); // rom_ptr |
| 795 | emit_mov_const(A_COND_AL, 0, (pmcv&0xfffff)<<1); |
| 796 | EOP_LDRH_REG(0,1,0); // ldrh r0, [r1, r0] |
| 797 | known_regs.pmac_read[reg] += 1; |
| 798 | } |
| 799 | else if ((mode & 0x47ff) == 0x0018) // DRAM |
| 800 | { |
| 801 | int inc = get_inc(mode); |
| 802 | EOP_LDR_IMM(1,7,0x490); // dram_ptr |
| 803 | emit_mov_const(A_COND_AL, 0, (pmcv&0xffff)<<1); |
| 804 | EOP_LDRH_REG(0,1,0); // ldrh r0, [r1, r0] |
| 805 | if (reg == 4 && (pmcv == 0x187f03 || pmcv == 0x187f04)) // wait loop detection |
| 806 | { |
| 807 | int flag = (pmcv == 0x187f03) ? SSP_WAIT_30FE06 : SSP_WAIT_30FE08; |
| 808 | tr_flush_dirty_ST(); |
| 809 | EOP_LDR_IMM(1,7,0x484); // ldr r1, [r7, #0x484] // emu_status |
| 810 | EOP_TST_REG_SIMPLE(0,0); |
| 811 | EOP_C_DOP_IMM(A_COND_EQ,A_OP_SUB,0,11,11,22/2,1); // subeq r11, r11, #1024 |
| 812 | EOP_C_DOP_IMM(A_COND_EQ,A_OP_ORR,0, 1, 1,24/2,flag>>8); // orreq r1, r1, #SSP_WAIT_30FE08 |
| 813 | EOP_STR_IMM(1,7,0x484); // str r1, [r7, #0x484] // emu_status |
| 814 | } |
| 815 | known_regs.pmac_read[reg] += inc; |
| 816 | } |
| 817 | else |
| 818 | { |
| 819 | tr_unhandled(); |
| 820 | } |
| 821 | known_regs.pmc.v = known_regs.pmac_read[reg]; |
| 822 | //known_regb |= KRREG_PMC; |
| 823 | dirty_regb |= KRREG_PMC; |
| 824 | dirty_regb |= 1 << (20+reg); |
| 825 | hostreg_r[0] = hostreg_r[1] = -1; |
| 826 | return; |
| 827 | } |
| 828 | |
| 829 | known_regb &= ~KRREG_PMC; |
| 830 | dirty_regb &= ~KRREG_PMC; |
| 831 | known_regb &= ~(1 << (20+reg)); |
| 832 | dirty_regb &= ~(1 << (20+reg)); |
| 833 | |
| 834 | // call the C code to handle this |
| 835 | tr_flush_dirty_ST(); |
| 836 | //tr_flush_dirty_pmcrs(); |
| 837 | tr_mov16(0, reg); |
| 838 | emit_call(A_COND_AL, ssp_pm_read); |
| 839 | hostreg_clear(); |
| 840 | } |
| 841 | |
| 842 | static void tr_PM0_to_r0(int op) |
| 843 | { |
| 844 | tr_PMX_to_r0(0); |
| 845 | } |
| 846 | |
| 847 | static void tr_PM1_to_r0(int op) |
| 848 | { |
| 849 | tr_PMX_to_r0(1); |
| 850 | } |
| 851 | |
| 852 | static void tr_PM2_to_r0(int op) |
| 853 | { |
| 854 | tr_PMX_to_r0(2); |
| 855 | } |
| 856 | |
| 857 | static void tr_XST_to_r0(int op) |
| 858 | { |
| 859 | EOP_ADD_IMM(0, 7, 24/2, 4); // add r0, r7, #0x400 |
| 860 | EOP_LDRH_IMM(0, 0, SSP_XST*4+2); |
| 861 | } |
| 862 | |
| 863 | static void tr_PM4_to_r0(int op) |
| 864 | { |
| 865 | tr_PMX_to_r0(4); |
| 866 | } |
| 867 | |
| 868 | static void tr_PMC_to_r0(int op) |
| 869 | { |
| 870 | if (known_regb & KRREG_PMC) |
| 871 | { |
| 872 | if (known_regs.emu_status & SSP_PMC_HAVE_ADDR) { |
| 873 | known_regs.emu_status |= SSP_PMC_SET; |
| 874 | known_regs.emu_status &= ~SSP_PMC_HAVE_ADDR; |
| 875 | // do nothing - this is handled elsewhere |
| 876 | } else { |
| 877 | tr_mov16(0, known_regs.pmc.l); |
| 878 | known_regs.emu_status |= SSP_PMC_HAVE_ADDR; |
| 879 | } |
| 880 | } |
| 881 | else |
| 882 | { |
| 883 | EOP_LDR_IMM(1,7,0x484); // ldr r1, [r7, #0x484] // emu_status |
| 884 | tr_flush_dirty_ST(); |
| 885 | if (op != 0x000e) |
| 886 | EOP_LDR_IMM(0, 7, 0x400+SSP_PMC*4); |
| 887 | EOP_TST_IMM(1, 0, SSP_PMC_HAVE_ADDR); |
| 888 | EOP_C_DOP_IMM(A_COND_EQ,A_OP_ORR,0, 1, 1, 0, SSP_PMC_HAVE_ADDR); // orreq r1, r1, #.. |
| 889 | EOP_C_DOP_IMM(A_COND_NE,A_OP_BIC,0, 1, 1, 0, SSP_PMC_HAVE_ADDR); // bicne r1, r1, #.. |
| 890 | EOP_C_DOP_IMM(A_COND_NE,A_OP_ORR,0, 1, 1, 0, SSP_PMC_SET); // orrne r1, r1, #.. |
| 891 | EOP_STR_IMM(1,7,0x484); |
| 892 | hostreg_r[0] = hostreg_r[1] = -1; |
| 893 | } |
| 894 | } |
| 895 | |
| 896 | |
| 897 | typedef void (tr_read_func)(int op); |
| 898 | |
| 899 | static tr_read_func *tr_read_funcs[16] = |
| 900 | { |
| 901 | tr_GR0_to_r0, |
| 902 | tr_X_to_r0, |
| 903 | tr_Y_to_r0, |
| 904 | tr_A_to_r0, |
| 905 | tr_ST_to_r0, |
| 906 | tr_STACK_to_r0, |
| 907 | tr_PC_to_r0, |
| 908 | tr_P_to_r0, |
| 909 | tr_PM0_to_r0, |
| 910 | tr_PM1_to_r0, |
| 911 | tr_PM2_to_r0, |
| 912 | tr_XST_to_r0, |
| 913 | tr_PM4_to_r0, |
| 914 | (tr_read_func *)tr_unhandled, |
| 915 | tr_PMC_to_r0, |
| 916 | tr_AL_to_r0 |
| 917 | }; |
| 918 | |
| 919 | |
| 920 | // write r0 to general reg handlers. Trashes r1 |
| 921 | #define TR_WRITE_R0_TO_REG(reg) \ |
| 922 | { \ |
| 923 | hostreg_sspreg_changed(reg); \ |
| 924 | hostreg_r[0] = (reg)<<16; \ |
| 925 | if (const_val != -1) { \ |
| 926 | known_regs.gr[reg].h = const_val; \ |
| 927 | known_regb |= 1 << (reg); \ |
| 928 | } else { \ |
| 929 | known_regb &= ~(1 << (reg)); \ |
| 930 | } \ |
| 931 | } |
| 932 | |
| 933 | static void tr_r0_to_GR0(int const_val) |
| 934 | { |
| 935 | // do nothing |
| 936 | } |
| 937 | |
| 938 | static void tr_r0_to_X(int const_val) |
| 939 | { |
| 940 | EOP_MOV_REG_LSL(4, 4, 16); // mov r4, r4, lsl #16 |
| 941 | EOP_MOV_REG_LSR(4, 4, 16); // mov r4, r4, lsr #16 |
| 942 | EOP_ORR_REG_LSL(4, 4, 0, 16); // orr r4, r4, r0, lsl #16 |
| 943 | dirty_regb |= KRREG_P; // touching X or Y makes P dirty. |
| 944 | TR_WRITE_R0_TO_REG(SSP_X); |
| 945 | } |
| 946 | |
| 947 | static void tr_r0_to_Y(int const_val) |
| 948 | { |
| 949 | EOP_MOV_REG_LSR(4, 4, 16); // mov r4, r4, lsr #16 |
| 950 | EOP_ORR_REG_LSL(4, 4, 0, 16); // orr r4, r4, r0, lsl #16 |
| 951 | EOP_MOV_REG_ROR(4, 4, 16); // mov r4, r4, ror #16 |
| 952 | dirty_regb |= KRREG_P; |
| 953 | TR_WRITE_R0_TO_REG(SSP_Y); |
| 954 | } |
| 955 | |
| 956 | static void tr_r0_to_A(int const_val) |
| 957 | { |
| 958 | if (tr_predict_al_need()) { |
| 959 | EOP_MOV_REG_LSL(5, 5, 16); // mov r5, r5, lsl #16 |
| 960 | EOP_MOV_REG_LSR(5, 5, 16); // mov r5, r5, lsr #16 @ AL |
| 961 | EOP_ORR_REG_LSL(5, 5, 0, 16); // orr r5, r5, r0, lsl #16 |
| 962 | } |
| 963 | else |
| 964 | EOP_MOV_REG_LSL(5, 0, 16); |
| 965 | TR_WRITE_R0_TO_REG(SSP_A); |
| 966 | } |
| 967 | |
| 968 | static void tr_r0_to_ST(int const_val) |
| 969 | { |
| 970 | // VR doesn't need much accuracy here.. |
| 971 | EOP_AND_IMM(1, 0, 0, 0x67); // and r1, r0, #0x67 |
| 972 | EOP_AND_IMM(6, 6, 8/2, 0xe0); // and r6, r6, #7<<29 @ preserve STACK |
| 973 | EOP_ORR_REG_LSL(6, 6, 1, 4); // orr r6, r6, r1, lsl #4 |
| 974 | TR_WRITE_R0_TO_REG(SSP_ST); |
| 975 | hostreg_r[1] = -1; |
| 976 | dirty_regb &= ~KRREG_ST; |
| 977 | } |
| 978 | |
| 979 | static void tr_r0_to_STACK(int const_val) |
| 980 | { |
| 981 | // 448 |
| 982 | EOP_ADD_IMM(1, 7, 24/2, 0x04); // add r1, r7, 0x400 |
| 983 | EOP_ADD_IMM(1, 1, 0, 0x48); // add r1, r1, 0x048 |
| 984 | EOP_ADD_REG_LSR(1, 1, 6, 28); // add r1, r1, r6, lsr #28 |
| 985 | EOP_STRH_SIMPLE(0, 1); // strh r0, [r1] |
| 986 | EOP_ADD_IMM(6, 6, 8/2, 0x20); // add r6, r6, #1<<29 |
| 987 | hostreg_r[1] = -1; |
| 988 | } |
| 989 | |
| 990 | static void tr_r0_to_PC(int const_val) |
| 991 | { |
| 992 | /* |
| 993 | * do nothing - dispatcher will take care of this |
| 994 | EOP_MOV_REG_LSL(1, 0, 16); // mov r1, r0, lsl #16 |
| 995 | EOP_STR_IMM(1,7,0x400+6*4); // str r1, [r7, #(0x400+6*8)] |
| 996 | hostreg_r[1] = -1; |
| 997 | */ |
| 998 | } |
| 999 | |
| 1000 | static void tr_r0_to_AL(int const_val) |
| 1001 | { |
| 1002 | EOP_MOV_REG_LSR(5, 5, 16); // mov r5, r5, lsr #16 |
| 1003 | EOP_ORR_REG_LSL(5, 5, 0, 16); // orr r5, r5, r0, lsl #16 |
| 1004 | EOP_MOV_REG_ROR(5, 5, 16); // mov r5, r5, ror #16 |
| 1005 | hostreg_sspreg_changed(SSP_AL); |
| 1006 | if (const_val != -1) { |
| 1007 | known_regs.gr[SSP_A].l = const_val; |
| 1008 | known_regb |= 1 << SSP_AL; |
| 1009 | } else |
| 1010 | known_regb &= ~(1 << SSP_AL); |
| 1011 | } |
| 1012 | |
| 1013 | static void tr_r0_to_PMX(int reg) |
| 1014 | { |
| 1015 | if ((known_regb & KRREG_PMC) && (known_regs.emu_status & SSP_PMC_SET)) |
| 1016 | { |
| 1017 | known_regs.pmac_write[reg] = known_regs.pmc.v; |
| 1018 | known_regs.emu_status &= ~SSP_PMC_SET; |
| 1019 | known_regb |= 1 << (25+reg); |
| 1020 | dirty_regb |= 1 << (25+reg); |
| 1021 | return; |
| 1022 | } |
| 1023 | |
| 1024 | if ((known_regb & KRREG_PMC) && (known_regb & (1 << (25+reg)))) |
| 1025 | { |
| 1026 | int mode, addr; |
| 1027 | |
| 1028 | known_regs.emu_status &= ~SSP_PMC_HAVE_ADDR; |
| 1029 | |
| 1030 | mode = known_regs.pmac_write[reg]>>16; |
| 1031 | addr = known_regs.pmac_write[reg]&0xffff; |
| 1032 | if ((mode & 0x43ff) == 0x0018) // DRAM |
| 1033 | { |
| 1034 | int inc = get_inc(mode); |
| 1035 | if (mode & 0x0400) tr_unhandled(); |
| 1036 | EOP_LDR_IMM(1,7,0x490); // dram_ptr |
| 1037 | emit_mov_const(A_COND_AL, 2, addr<<1); |
| 1038 | EOP_STRH_REG(0,1,2); // strh r0, [r1, r2] |
| 1039 | known_regs.pmac_write[reg] += inc; |
| 1040 | } |
| 1041 | else if ((mode & 0xfbff) == 0x4018) // DRAM, cell inc |
| 1042 | { |
| 1043 | if (mode & 0x0400) tr_unhandled(); |
| 1044 | EOP_LDR_IMM(1,7,0x490); // dram_ptr |
| 1045 | emit_mov_const(A_COND_AL, 2, addr<<1); |
| 1046 | EOP_STRH_REG(0,1,2); // strh r0, [r1, r2] |
| 1047 | known_regs.pmac_write[reg] += (addr&1) ? 31 : 1; |
| 1048 | } |
| 1049 | else if ((mode & 0x47ff) == 0x001c) // IRAM |
| 1050 | { |
| 1051 | int inc = get_inc(mode); |
| 1052 | EOP_LDR_IMM(1,7,0x48c); // iram_ptr |
| 1053 | emit_mov_const(A_COND_AL, 2, (addr&0x3ff)<<1); |
| 1054 | EOP_STRH_REG(0,1,2); // strh r0, [r1, r2] |
| 1055 | EOP_MOV_IMM(1,0,1); |
| 1056 | EOP_STR_IMM(1,7,0x494); // iram_dirty |
| 1057 | known_regs.pmac_write[reg] += inc; |
| 1058 | } |
| 1059 | else |
| 1060 | tr_unhandled(); |
| 1061 | |
| 1062 | known_regs.pmc.v = known_regs.pmac_write[reg]; |
| 1063 | //known_regb |= KRREG_PMC; |
| 1064 | dirty_regb |= KRREG_PMC; |
| 1065 | dirty_regb |= 1 << (25+reg); |
| 1066 | hostreg_r[1] = hostreg_r[2] = -1; |
| 1067 | return; |
| 1068 | } |
| 1069 | |
| 1070 | known_regb &= ~KRREG_PMC; |
| 1071 | dirty_regb &= ~KRREG_PMC; |
| 1072 | known_regb &= ~(1 << (25+reg)); |
| 1073 | dirty_regb &= ~(1 << (25+reg)); |
| 1074 | |
| 1075 | // call the C code to handle this |
| 1076 | tr_flush_dirty_ST(); |
| 1077 | //tr_flush_dirty_pmcrs(); |
| 1078 | tr_mov16(1, reg); |
| 1079 | emit_call(A_COND_AL, ssp_pm_write); |
| 1080 | hostreg_clear(); |
| 1081 | } |
| 1082 | |
| 1083 | static void tr_r0_to_PM0(int const_val) |
| 1084 | { |
| 1085 | tr_r0_to_PMX(0); |
| 1086 | } |
| 1087 | |
| 1088 | static void tr_r0_to_PM1(int const_val) |
| 1089 | { |
| 1090 | tr_r0_to_PMX(1); |
| 1091 | } |
| 1092 | |
| 1093 | static void tr_r0_to_PM2(int const_val) |
| 1094 | { |
| 1095 | tr_r0_to_PMX(2); |
| 1096 | } |
| 1097 | |
| 1098 | static void tr_r0_to_PM4(int const_val) |
| 1099 | { |
| 1100 | tr_r0_to_PMX(4); |
| 1101 | } |
| 1102 | |
| 1103 | static void tr_r0_to_PMC(int const_val) |
| 1104 | { |
| 1105 | if ((known_regb & KRREG_PMC) && const_val != -1) |
| 1106 | { |
| 1107 | if (known_regs.emu_status & SSP_PMC_HAVE_ADDR) { |
| 1108 | known_regs.emu_status |= SSP_PMC_SET; |
| 1109 | known_regs.emu_status &= ~SSP_PMC_HAVE_ADDR; |
| 1110 | known_regs.pmc.h = const_val; |
| 1111 | } else { |
| 1112 | known_regs.emu_status |= SSP_PMC_HAVE_ADDR; |
| 1113 | known_regs.pmc.l = const_val; |
| 1114 | } |
| 1115 | } |
| 1116 | else |
| 1117 | { |
| 1118 | tr_flush_dirty_ST(); |
| 1119 | if (known_regb & KRREG_PMC) { |
| 1120 | emit_mov_const(A_COND_AL, 1, known_regs.pmc.v); |
| 1121 | EOP_STR_IMM(1,7,0x400+SSP_PMC*4); |
| 1122 | known_regb &= ~KRREG_PMC; |
| 1123 | dirty_regb &= ~KRREG_PMC; |
| 1124 | } |
| 1125 | EOP_LDR_IMM(1,7,0x484); // ldr r1, [r7, #0x484] // emu_status |
| 1126 | EOP_ADD_IMM(2,7,24/2,4); // add r2, r7, #0x400 |
| 1127 | EOP_TST_IMM(1, 0, SSP_PMC_HAVE_ADDR); |
| 1128 | EOP_C_AM3_IMM(A_COND_EQ,1,0,2,0,0,1,SSP_PMC*4); // strxx r0, [r2, #SSP_PMC] |
| 1129 | EOP_C_AM3_IMM(A_COND_NE,1,0,2,0,0,1,SSP_PMC*4+2); |
| 1130 | EOP_C_DOP_IMM(A_COND_EQ,A_OP_ORR,0, 1, 1, 0, SSP_PMC_HAVE_ADDR); // orreq r1, r1, #.. |
| 1131 | EOP_C_DOP_IMM(A_COND_NE,A_OP_BIC,0, 1, 1, 0, SSP_PMC_HAVE_ADDR); // bicne r1, r1, #.. |
| 1132 | EOP_C_DOP_IMM(A_COND_NE,A_OP_ORR,0, 1, 1, 0, SSP_PMC_SET); // orrne r1, r1, #.. |
| 1133 | EOP_STR_IMM(1,7,0x484); |
| 1134 | hostreg_r[1] = hostreg_r[2] = -1; |
| 1135 | } |
| 1136 | } |
| 1137 | |
| 1138 | typedef void (tr_write_func)(int const_val); |
| 1139 | |
| 1140 | static tr_write_func *tr_write_funcs[16] = |
| 1141 | { |
| 1142 | tr_r0_to_GR0, |
| 1143 | tr_r0_to_X, |
| 1144 | tr_r0_to_Y, |
| 1145 | tr_r0_to_A, |
| 1146 | tr_r0_to_ST, |
| 1147 | tr_r0_to_STACK, |
| 1148 | tr_r0_to_PC, |
| 1149 | (tr_write_func *)tr_unhandled, |
| 1150 | tr_r0_to_PM0, |
| 1151 | tr_r0_to_PM1, |
| 1152 | tr_r0_to_PM2, |
| 1153 | (tr_write_func *)tr_unhandled, |
| 1154 | tr_r0_to_PM4, |
| 1155 | (tr_write_func *)tr_unhandled, |
| 1156 | tr_r0_to_PMC, |
| 1157 | tr_r0_to_AL |
| 1158 | }; |
| 1159 | |
| 1160 | static void tr_mac_load_XY(int op) |
| 1161 | { |
| 1162 | tr_rX_read(op&3, (op>>2)&3); // X |
| 1163 | EOP_MOV_REG_LSL(4, 0, 16); |
| 1164 | tr_rX_read(((op>>4)&3)|4, (op>>6)&3); // Y |
| 1165 | EOP_ORR_REG_SIMPLE(4, 0); |
| 1166 | dirty_regb |= KRREG_P; |
| 1167 | hostreg_sspreg_changed(SSP_X); |
| 1168 | hostreg_sspreg_changed(SSP_Y); |
| 1169 | known_regb &= ~KRREG_X; |
| 1170 | known_regb &= ~KRREG_Y; |
| 1171 | } |
| 1172 | |
| 1173 | // ----------------------------------------------------- |
| 1174 | |
| 1175 | static int tr_detect_set_pm(unsigned int op, int *pc, int imm) |
| 1176 | { |
| 1177 | u32 pmcv, tmpv; |
| 1178 | if (!((op&0xfef0) == 0x08e0 && (PROGRAM(*pc)&0xfef0) == 0x08e0)) return 0; |
| 1179 | |
| 1180 | // programming PMC: |
| 1181 | // ldi PMC, imm1 |
| 1182 | // ldi PMC, imm2 |
| 1183 | (*pc)++; |
| 1184 | pmcv = imm | (PROGRAM((*pc)++) << 16); |
| 1185 | known_regs.pmc.v = pmcv; |
| 1186 | known_regb |= KRREG_PMC; |
| 1187 | dirty_regb |= KRREG_PMC; |
| 1188 | known_regs.emu_status |= SSP_PMC_SET; |
| 1189 | n_in_ops++; |
| 1190 | |
| 1191 | // check for possible reg programming |
| 1192 | tmpv = PROGRAM(*pc); |
| 1193 | if ((tmpv & 0xfff8) == 0x08 || (tmpv & 0xff8f) == 0x80) |
| 1194 | { |
| 1195 | int is_write = (tmpv & 0xff8f) == 0x80; |
| 1196 | int reg = is_write ? ((tmpv>>4)&0x7) : (tmpv&0x7); |
| 1197 | if (reg > 4) tr_unhandled(); |
| 1198 | if ((tmpv & 0x0f) != 0 && (tmpv & 0xf0) != 0) tr_unhandled(); |
| 1199 | known_regs.pmac_read[is_write ? reg + 5 : reg] = pmcv; |
| 1200 | known_regb |= is_write ? (1 << (reg+25)) : (1 << (reg+20)); |
| 1201 | dirty_regb |= is_write ? (1 << (reg+25)) : (1 << (reg+20)); |
| 1202 | known_regs.emu_status &= ~SSP_PMC_SET; |
| 1203 | (*pc)++; |
| 1204 | n_in_ops++; |
| 1205 | return 5; |
| 1206 | } |
| 1207 | |
| 1208 | tr_unhandled(); |
| 1209 | return 4; |
| 1210 | } |
| 1211 | |
| 1212 | static const short pm0_block_seq[] = { 0x0880, 0, 0x0880, 0, 0x0840, 0x60 }; |
| 1213 | |
| 1214 | static int tr_detect_pm0_block(unsigned int op, int *pc, int imm) |
| 1215 | { |
| 1216 | // ldi ST, 0 |
| 1217 | // ldi PM0, 0 |
| 1218 | // ldi PM0, 0 |
| 1219 | // ldi ST, 60h |
| 1220 | unsigned short *pp; |
| 1221 | if (op != 0x0840 || imm != 0) return 0; |
| 1222 | pp = PROGRAM_P(*pc); |
| 1223 | if (memcmp(pp, pm0_block_seq, sizeof(pm0_block_seq)) != 0) return 0; |
| 1224 | |
| 1225 | EOP_AND_IMM(6, 6, 8/2, 0xe0); // and r6, r6, #7<<29 @ preserve STACK |
| 1226 | EOP_ORR_IMM(6, 6, 24/2, 6); // orr r6, r6, 0x600 |
| 1227 | hostreg_sspreg_changed(SSP_ST); |
| 1228 | known_regs.gr[SSP_ST].h = 0x60; |
| 1229 | known_regb |= 1 << SSP_ST; |
| 1230 | dirty_regb &= ~KRREG_ST; |
| 1231 | (*pc) += 3*2; |
| 1232 | n_in_ops += 3; |
| 1233 | return 4*2; |
| 1234 | } |
| 1235 | |
| 1236 | static int tr_detect_rotate(unsigned int op, int *pc, int imm) |
| 1237 | { |
| 1238 | // @ 3DA2 and 426A |
| 1239 | // ld PMC, (r3|00) |
| 1240 | // ld (r3|00), PMC |
| 1241 | // ld -, AL |
| 1242 | if (op != 0x02e3 || PROGRAM(*pc) != 0x04e3 || PROGRAM(*pc + 1) != 0x000f) return 0; |
| 1243 | |
| 1244 | tr_bank_read(0); |
| 1245 | EOP_MOV_REG_LSL(0, 0, 4); |
| 1246 | EOP_ORR_REG_LSR(0, 0, 0, 16); |
| 1247 | tr_bank_write(0); |
| 1248 | (*pc) += 2; |
| 1249 | n_in_ops += 2; |
| 1250 | return 3; |
| 1251 | } |
| 1252 | |
| 1253 | // ----------------------------------------------------- |
| 1254 | |
| 1255 | static int translate_op(unsigned int op, int *pc, int imm, int *end_cond, int *jump_pc) |
| 1256 | { |
| 1257 | u32 tmpv, tmpv2, tmpv3; |
| 1258 | int ret = 0; |
| 1259 | known_regs.gr[SSP_PC].h = *pc; |
| 1260 | |
| 1261 | switch (op >> 9) |
| 1262 | { |
| 1263 | // ld d, s |
| 1264 | case 0x00: |
| 1265 | if (op == 0) { ret++; break; } // nop |
| 1266 | tmpv = op & 0xf; // src |
| 1267 | tmpv2 = (op >> 4) & 0xf; // dst |
| 1268 | if (tmpv2 == SSP_A && tmpv == SSP_P) { // ld A, P |
| 1269 | tr_flush_dirty_P(); |
| 1270 | EOP_MOV_REG_SIMPLE(5, 10); |
| 1271 | hostreg_sspreg_changed(SSP_A); |
| 1272 | known_regb &= ~(KRREG_A|KRREG_AL); |
| 1273 | ret++; break; |
| 1274 | } |
| 1275 | tr_read_funcs[tmpv](op); |
| 1276 | tr_write_funcs[tmpv2]((known_regb & (1 << tmpv)) ? known_regs.gr[tmpv].h : -1); |
| 1277 | if (tmpv2 == SSP_PC) { |
| 1278 | ret |= 0x10000; |
| 1279 | *end_cond = -A_COND_AL; |
| 1280 | } |
| 1281 | ret++; break; |
| 1282 | |
| 1283 | // ld d, (ri) |
| 1284 | case 0x01: { |
| 1285 | int r = (op&3) | ((op>>6)&4); |
| 1286 | int mod = (op>>2)&3; |
| 1287 | tmpv = (op >> 4) & 0xf; // dst |
| 1288 | ret = tr_detect_rotate(op, pc, imm); |
| 1289 | if (ret > 0) break; |
| 1290 | if (tmpv != 0) |
| 1291 | tr_rX_read(r, mod); |
| 1292 | else { |
| 1293 | int cnt = 1; |
| 1294 | while (PROGRAM(*pc) == op) { |
| 1295 | (*pc)++; cnt++; ret++; |
| 1296 | n_in_ops++; |
| 1297 | } |
| 1298 | tr_ptrr_mod(r, mod, 1, cnt); // skip |
| 1299 | } |
| 1300 | tr_write_funcs[tmpv](-1); |
| 1301 | if (tmpv == SSP_PC) { |
| 1302 | ret |= 0x10000; |
| 1303 | *end_cond = -A_COND_AL; |
| 1304 | } |
| 1305 | ret++; break; |
| 1306 | } |
| 1307 | |
| 1308 | // ld (ri), s |
| 1309 | case 0x02: |
| 1310 | tmpv = (op >> 4) & 0xf; // src |
| 1311 | tr_read_funcs[tmpv](op); |
| 1312 | tr_rX_write(op); |
| 1313 | ret++; break; |
| 1314 | |
| 1315 | // ld a, adr |
| 1316 | case 0x03: |
| 1317 | tr_bank_read(op&0x1ff); |
| 1318 | tr_r0_to_A(-1); |
| 1319 | ret++; break; |
| 1320 | |
| 1321 | // ldi d, imm |
| 1322 | case 0x04: |
| 1323 | tmpv = (op & 0xf0) >> 4; // dst |
| 1324 | ret = tr_detect_pm0_block(op, pc, imm); |
| 1325 | if (ret > 0) break; |
| 1326 | ret = tr_detect_set_pm(op, pc, imm); |
| 1327 | if (ret > 0) break; |
| 1328 | tr_mov16(0, imm); |
| 1329 | tr_write_funcs[tmpv](imm); |
| 1330 | if (tmpv == SSP_PC) { |
| 1331 | ret |= 0x10000; |
| 1332 | *jump_pc = imm; |
| 1333 | } |
| 1334 | ret += 2; break; |
| 1335 | |
| 1336 | // ld d, ((ri)) |
| 1337 | case 0x05: |
| 1338 | tmpv2 = (op >> 4) & 0xf; // dst |
| 1339 | tr_rX_read2(op); |
| 1340 | tr_write_funcs[tmpv2](-1); |
| 1341 | if (tmpv2 == SSP_PC) { |
| 1342 | ret |= 0x10000; |
| 1343 | *end_cond = -A_COND_AL; |
| 1344 | } |
| 1345 | ret += 3; break; |
| 1346 | |
| 1347 | // ldi (ri), imm |
| 1348 | case 0x06: |
| 1349 | tr_mov16(0, imm); |
| 1350 | tr_rX_write(op); |
| 1351 | ret += 2; break; |
| 1352 | |
| 1353 | // ld adr, a |
| 1354 | case 0x07: |
| 1355 | tr_A_to_r0(op); |
| 1356 | tr_bank_write(op&0x1ff); |
| 1357 | ret++; break; |
| 1358 | |
| 1359 | // ld d, ri |
| 1360 | case 0x09: { |
| 1361 | int r; |
| 1362 | r = (op&3) | ((op>>6)&4); // src |
| 1363 | tmpv2 = (op >> 4) & 0xf; // dst |
| 1364 | if ((r&3) == 3) tr_unhandled(); |
| 1365 | |
| 1366 | if (known_regb & (1 << (r+8))) { |
| 1367 | tr_mov16(0, known_regs.r[r]); |
| 1368 | tr_write_funcs[tmpv2](known_regs.r[r]); |
| 1369 | } else { |
| 1370 | int reg = (r < 4) ? 8 : 9; |
| 1371 | if (r&3) EOP_MOV_REG_LSR(0, reg, (r&3)*8); // mov r0, r{7,8}, lsr #lsr |
| 1372 | EOP_AND_IMM(0, (r&3)?0:reg, 0, 0xff); // and r0, r{7,8}, <mask> |
| 1373 | hostreg_r[0] = -1; |
| 1374 | tr_write_funcs[tmpv2](-1); |
| 1375 | } |
| 1376 | ret++; break; |
| 1377 | } |
| 1378 | |
| 1379 | // ld ri, s |
| 1380 | case 0x0a: { |
| 1381 | int r; |
| 1382 | r = (op&3) | ((op>>6)&4); // dst |
| 1383 | tmpv = (op >> 4) & 0xf; // src |
| 1384 | if ((r&3) == 3) tr_unhandled(); |
| 1385 | |
| 1386 | if (known_regb & (1 << tmpv)) { |
| 1387 | known_regs.r[r] = known_regs.gr[tmpv].h; |
| 1388 | known_regb |= 1 << (r + 8); |
| 1389 | dirty_regb |= 1 << (r + 8); |
| 1390 | } else { |
| 1391 | int reg = (r < 4) ? 8 : 9; |
| 1392 | int ror = ((4 - (r&3))*8) & 0x1f; |
| 1393 | tr_read_funcs[tmpv](op); |
| 1394 | EOP_BIC_IMM(reg, reg, ror/2, 0xff); // bic r{7,8}, r{7,8}, <mask> |
| 1395 | EOP_AND_IMM(0, 0, 0, 0xff); // and r0, r0, 0xff |
| 1396 | EOP_ORR_REG_LSL(reg, reg, 0, (r&3)*8); // orr r{7,8}, r{7,8}, r0, lsl #lsl |
| 1397 | hostreg_r[0] = -1; |
| 1398 | known_regb &= ~(1 << (r+8)); |
| 1399 | dirty_regb &= ~(1 << (r+8)); |
| 1400 | } |
| 1401 | ret++; break; |
| 1402 | } |
| 1403 | |
| 1404 | // ldi ri, simm |
| 1405 | case 0x0c: case 0x0d: case 0x0e: case 0x0f: |
| 1406 | tmpv = (op>>8)&7; |
| 1407 | known_regs.r[tmpv] = op; |
| 1408 | known_regb |= 1 << (tmpv + 8); |
| 1409 | dirty_regb |= 1 << (tmpv + 8); |
| 1410 | ret++; break; |
| 1411 | |
| 1412 | // call cond, addr |
| 1413 | case 0x24: { |
| 1414 | u32 *jump_op = NULL; |
| 1415 | tmpv = tr_cond_check(op); |
| 1416 | if (tmpv != A_COND_AL) { |
| 1417 | jump_op = tcache_ptr; |
| 1418 | EOP_MOV_IMM(0, 0, 0); // placeholder for branch |
| 1419 | } |
| 1420 | tr_mov16(0, *pc); |
| 1421 | tr_r0_to_STACK(*pc); |
| 1422 | if (tmpv != A_COND_AL) { |
| 1423 | u32 *real_ptr = tcache_ptr; |
| 1424 | tcache_ptr = jump_op; |
| 1425 | EOP_C_B(tr_neg_cond(tmpv),0,real_ptr - jump_op - 2); |
| 1426 | tcache_ptr = real_ptr; |
| 1427 | } |
| 1428 | tr_mov16_cond(tmpv, 0, imm); |
| 1429 | if (tmpv != A_COND_AL) |
| 1430 | tr_mov16_cond(tr_neg_cond(tmpv), 0, *pc); |
| 1431 | tr_r0_to_PC(tmpv == A_COND_AL ? imm : -1); |
| 1432 | ret |= 0x10000; |
| 1433 | *end_cond = tmpv; |
| 1434 | *jump_pc = imm; |
| 1435 | ret += 2; break; |
| 1436 | } |
| 1437 | |
| 1438 | // ld d, (a) |
| 1439 | case 0x25: |
| 1440 | tmpv2 = (op >> 4) & 0xf; // dst |
| 1441 | tr_A_to_r0(op); |
| 1442 | EOP_LDR_IMM(1,7,0x48c); // ptr_iram_rom |
| 1443 | EOP_ADD_REG_LSL(0,1,0,1); // add r0, r1, r0, lsl #1 |
| 1444 | EOP_LDRH_SIMPLE(0,0); // ldrh r0, [r0] |
| 1445 | hostreg_r[0] = hostreg_r[1] = -1; |
| 1446 | tr_write_funcs[tmpv2](-1); |
| 1447 | if (tmpv2 == SSP_PC) { |
| 1448 | ret |= 0x10000; |
| 1449 | *end_cond = -A_COND_AL; |
| 1450 | } |
| 1451 | ret += 3; break; |
| 1452 | |
| 1453 | // bra cond, addr |
| 1454 | case 0x26: |
| 1455 | tmpv = tr_cond_check(op); |
| 1456 | tr_mov16_cond(tmpv, 0, imm); |
| 1457 | if (tmpv != A_COND_AL) |
| 1458 | tr_mov16_cond(tr_neg_cond(tmpv), 0, *pc); |
| 1459 | tr_r0_to_PC(tmpv == A_COND_AL ? imm : -1); |
| 1460 | ret |= 0x10000; |
| 1461 | *end_cond = tmpv; |
| 1462 | *jump_pc = imm; |
| 1463 | ret += 2; break; |
| 1464 | |
| 1465 | // mod cond, op |
| 1466 | case 0x48: { |
| 1467 | // check for repeats of this op |
| 1468 | tmpv = 1; // count |
| 1469 | while (PROGRAM(*pc) == op && (op & 7) != 6) { |
| 1470 | (*pc)++; tmpv++; |
| 1471 | n_in_ops++; |
| 1472 | } |
| 1473 | if ((op&0xf0) != 0) // !always |
| 1474 | tr_make_dirty_ST(); |
| 1475 | |
| 1476 | tmpv2 = tr_cond_check(op); |
| 1477 | switch (op & 7) { |
| 1478 | case 2: EOP_C_DOP_REG_XIMM(tmpv2,A_OP_MOV,1,0,5,tmpv,A_AM1_ASR,5); break; // shr (arithmetic) |
| 1479 | case 3: EOP_C_DOP_REG_XIMM(tmpv2,A_OP_MOV,1,0,5,tmpv,A_AM1_LSL,5); break; // shl |
| 1480 | case 6: EOP_C_DOP_IMM(tmpv2,A_OP_RSB,1,5,5,0,0); break; // neg |
| 1481 | case 7: EOP_C_DOP_REG_XIMM(tmpv2,A_OP_EOR,0,5,1,31,A_AM1_ASR,5); // eor r1, r5, r5, asr #31 |
| 1482 | EOP_C_DOP_REG_XIMM(tmpv2,A_OP_ADD,1,1,5,31,A_AM1_LSR,5); // adds r5, r1, r5, lsr #31 |
| 1483 | hostreg_r[1] = -1; break; // abs |
| 1484 | default: tr_unhandled(); |
| 1485 | } |
| 1486 | |
| 1487 | hostreg_sspreg_changed(SSP_A); |
| 1488 | dirty_regb |= KRREG_ST; |
| 1489 | known_regb &= ~KRREG_ST; |
| 1490 | known_regb &= ~(KRREG_A|KRREG_AL); |
| 1491 | ret += tmpv; break; |
| 1492 | } |
| 1493 | |
| 1494 | // mpys? |
| 1495 | case 0x1b: |
| 1496 | tr_flush_dirty_P(); |
| 1497 | tr_mac_load_XY(op); |
| 1498 | tr_make_dirty_ST(); |
| 1499 | EOP_C_DOP_REG_XIMM(A_COND_AL,A_OP_SUB,1,5,5,0,A_AM1_LSL,10); // subs r5, r5, r10 |
| 1500 | hostreg_sspreg_changed(SSP_A); |
| 1501 | known_regb &= ~(KRREG_A|KRREG_AL); |
| 1502 | dirty_regb |= KRREG_ST; |
| 1503 | ret++; break; |
| 1504 | |
| 1505 | // mpya (rj), (ri), b |
| 1506 | case 0x4b: |
| 1507 | tr_flush_dirty_P(); |
| 1508 | tr_mac_load_XY(op); |
| 1509 | tr_make_dirty_ST(); |
| 1510 | EOP_C_DOP_REG_XIMM(A_COND_AL,A_OP_ADD,1,5,5,0,A_AM1_LSL,10); // adds r5, r5, r10 |
| 1511 | hostreg_sspreg_changed(SSP_A); |
| 1512 | known_regb &= ~(KRREG_A|KRREG_AL); |
| 1513 | dirty_regb |= KRREG_ST; |
| 1514 | ret++; break; |
| 1515 | |
| 1516 | // mld (rj), (ri), b |
| 1517 | case 0x5b: |
| 1518 | EOP_C_DOP_IMM(A_COND_AL,A_OP_MOV,1,0,5,0,0); // movs r5, #0 |
| 1519 | hostreg_sspreg_changed(SSP_A); |
| 1520 | known_regs.gr[SSP_A].v = 0; |
| 1521 | known_regb |= (KRREG_A|KRREG_AL); |
| 1522 | dirty_regb |= KRREG_ST; |
| 1523 | tr_mac_load_XY(op); |
| 1524 | ret++; break; |
| 1525 | |
| 1526 | // OP a, s |
| 1527 | case 0x10: |
| 1528 | case 0x30: |
| 1529 | case 0x40: |
| 1530 | case 0x50: |
| 1531 | case 0x60: |
| 1532 | case 0x70: |
| 1533 | tmpv = op & 0xf; // src |
| 1534 | tmpv2 = tr_aop_ssp2arm(op>>13); // op |
| 1535 | tmpv3 = (tmpv2 == A_OP_CMP) ? 0 : 5; |
| 1536 | if (tmpv == SSP_P) { |
| 1537 | tr_flush_dirty_P(); |
| 1538 | EOP_C_DOP_REG_XIMM(A_COND_AL,tmpv2,1,5,tmpv3, 0,A_AM1_LSL,10); // OPs r5, r5, r10 |
| 1539 | } else if (tmpv == SSP_A) { |
| 1540 | EOP_C_DOP_REG_XIMM(A_COND_AL,tmpv2,1,5,tmpv3, 0,A_AM1_LSL, 5); // OPs r5, r5, r5 |
| 1541 | } else { |
| 1542 | tr_read_funcs[tmpv](op); |
| 1543 | EOP_C_DOP_REG_XIMM(A_COND_AL,tmpv2,1,5,tmpv3,16,A_AM1_LSL, 0); // OPs r5, r5, r0, lsl #16 |
| 1544 | } |
| 1545 | hostreg_sspreg_changed(SSP_A); |
| 1546 | known_regb &= ~(KRREG_A|KRREG_AL|KRREG_ST); |
| 1547 | dirty_regb |= KRREG_ST; |
| 1548 | ret++; break; |
| 1549 | |
| 1550 | // OP a, (ri) |
| 1551 | case 0x11: |
| 1552 | case 0x31: |
| 1553 | case 0x41: |
| 1554 | case 0x51: |
| 1555 | case 0x61: |
| 1556 | case 0x71: |
| 1557 | tmpv2 = tr_aop_ssp2arm(op>>13); // op |
| 1558 | tmpv3 = (tmpv2 == A_OP_CMP) ? 0 : 5; |
| 1559 | tr_rX_read((op&3)|((op>>6)&4), (op>>2)&3); |
| 1560 | EOP_C_DOP_REG_XIMM(A_COND_AL,tmpv2,1,5,tmpv3,16,A_AM1_LSL,0); // OPs r5, r5, r0, lsl #16 |
| 1561 | hostreg_sspreg_changed(SSP_A); |
| 1562 | known_regb &= ~(KRREG_A|KRREG_AL|KRREG_ST); |
| 1563 | dirty_regb |= KRREG_ST; |
| 1564 | ret++; break; |
| 1565 | |
| 1566 | // OP a, adr |
| 1567 | case 0x13: |
| 1568 | case 0x33: |
| 1569 | case 0x43: |
| 1570 | case 0x53: |
| 1571 | case 0x63: |
| 1572 | case 0x73: |
| 1573 | tmpv2 = tr_aop_ssp2arm(op>>13); // op |
| 1574 | tmpv3 = (tmpv2 == A_OP_CMP) ? 0 : 5; |
| 1575 | tr_bank_read(op&0x1ff); |
| 1576 | EOP_C_DOP_REG_XIMM(A_COND_AL,tmpv2,1,5,tmpv3,16,A_AM1_LSL,0); // OPs r5, r5, r0, lsl #16 |
| 1577 | hostreg_sspreg_changed(SSP_A); |
| 1578 | known_regb &= ~(KRREG_A|KRREG_AL|KRREG_ST); |
| 1579 | dirty_regb |= KRREG_ST; |
| 1580 | ret++; break; |
| 1581 | |
| 1582 | // OP a, imm |
| 1583 | case 0x14: |
| 1584 | case 0x34: |
| 1585 | case 0x44: |
| 1586 | case 0x54: |
| 1587 | case 0x64: |
| 1588 | case 0x74: |
| 1589 | tmpv = (op & 0xf0) >> 4; |
| 1590 | tmpv2 = tr_aop_ssp2arm(op>>13); // op |
| 1591 | tmpv3 = (tmpv2 == A_OP_CMP) ? 0 : 5; |
| 1592 | tr_mov16(0, imm); |
| 1593 | EOP_C_DOP_REG_XIMM(A_COND_AL,tmpv2,1,5,tmpv3,16,A_AM1_LSL,0); // OPs r5, r5, r0, lsl #16 |
| 1594 | hostreg_sspreg_changed(SSP_A); |
| 1595 | known_regb &= ~(KRREG_A|KRREG_AL|KRREG_ST); |
| 1596 | dirty_regb |= KRREG_ST; |
| 1597 | ret += 2; break; |
| 1598 | |
| 1599 | // OP a, ((ri)) |
| 1600 | case 0x15: |
| 1601 | case 0x35: |
| 1602 | case 0x45: |
| 1603 | case 0x55: |
| 1604 | case 0x65: |
| 1605 | case 0x75: |
| 1606 | tmpv2 = tr_aop_ssp2arm(op>>13); // op |
| 1607 | tmpv3 = (tmpv2 == A_OP_CMP) ? 0 : 5; |
| 1608 | tr_rX_read2(op); |
| 1609 | EOP_C_DOP_REG_XIMM(A_COND_AL,tmpv2,1,5,tmpv3,16,A_AM1_LSL,0); // OPs r5, r5, r0, lsl #16 |
| 1610 | hostreg_sspreg_changed(SSP_A); |
| 1611 | known_regb &= ~(KRREG_A|KRREG_AL|KRREG_ST); |
| 1612 | dirty_regb |= KRREG_ST; |
| 1613 | ret += 3; break; |
| 1614 | |
| 1615 | // OP a, ri |
| 1616 | case 0x19: |
| 1617 | case 0x39: |
| 1618 | case 0x49: |
| 1619 | case 0x59: |
| 1620 | case 0x69: |
| 1621 | case 0x79: { |
| 1622 | int r; |
| 1623 | tmpv2 = tr_aop_ssp2arm(op>>13); // op |
| 1624 | tmpv3 = (tmpv2 == A_OP_CMP) ? 0 : 5; |
| 1625 | r = (op&3) | ((op>>6)&4); // src |
| 1626 | if ((r&3) == 3) tr_unhandled(); |
| 1627 | |
| 1628 | if (known_regb & (1 << (r+8))) { |
| 1629 | EOP_C_DOP_IMM(A_COND_AL,tmpv2,1,5,tmpv3,16/2,known_regs.r[r]); // OPs r5, r5, #val<<16 |
| 1630 | } else { |
| 1631 | int reg = (r < 4) ? 8 : 9; |
| 1632 | if (r&3) EOP_MOV_REG_LSR(0, reg, (r&3)*8); // mov r0, r{7,8}, lsr #lsr |
| 1633 | EOP_AND_IMM(0, (r&3)?0:reg, 0, 0xff); // and r0, r{7,8}, <mask> |
| 1634 | EOP_C_DOP_REG_XIMM(A_COND_AL,tmpv2,1,5,tmpv3,16,A_AM1_LSL,0); // OPs r5, r5, r0, lsl #16 |
| 1635 | hostreg_r[0] = -1; |
| 1636 | } |
| 1637 | hostreg_sspreg_changed(SSP_A); |
| 1638 | known_regb &= ~(KRREG_A|KRREG_AL|KRREG_ST); |
| 1639 | dirty_regb |= KRREG_ST; |
| 1640 | ret++; break; |
| 1641 | } |
| 1642 | |
| 1643 | // OP simm |
| 1644 | case 0x1c: |
| 1645 | case 0x3c: |
| 1646 | case 0x4c: |
| 1647 | case 0x5c: |
| 1648 | case 0x6c: |
| 1649 | case 0x7c: |
| 1650 | tmpv2 = tr_aop_ssp2arm(op>>13); // op |
| 1651 | tmpv3 = (tmpv2 == A_OP_CMP) ? 0 : 5; |
| 1652 | EOP_C_DOP_IMM(A_COND_AL,tmpv2,1,5,tmpv3,16/2,op & 0xff); // OPs r5, r5, #val<<16 |
| 1653 | hostreg_sspreg_changed(SSP_A); |
| 1654 | known_regb &= ~(KRREG_A|KRREG_AL|KRREG_ST); |
| 1655 | dirty_regb |= KRREG_ST; |
| 1656 | ret++; break; |
| 1657 | } |
| 1658 | |
| 1659 | n_in_ops++; |
| 1660 | |
| 1661 | return ret; |
| 1662 | } |
| 1663 | |
| 1664 | static void emit_block_prologue(void) |
| 1665 | { |
| 1666 | // check if there are enough cycles.. |
| 1667 | // note: r0 must contain PC of current block |
| 1668 | EOP_CMP_IMM(11,0,0); // cmp r11, #0 |
| 1669 | emit_jump(A_COND_LE, ssp_drc_end); |
| 1670 | } |
| 1671 | |
| 1672 | /* cond: |
| 1673 | * >0: direct (un)conditional jump |
| 1674 | * <0: indirect jump |
| 1675 | */ |
| 1676 | static void emit_block_epilogue(int cycles, int cond, int pc, int end_pc) |
| 1677 | { |
| 1678 | if (cycles > 0xff) { elprintf(EL_ANOMALY, "large cycle count: %i\n", cycles); cycles = 0xff; } |
| 1679 | EOP_SUB_IMM(11,11,0,cycles); // sub r11, r11, #cycles |
| 1680 | |
| 1681 | if (cond < 0 || (end_pc >= 0x400 && pc < 0x400)) { |
| 1682 | // indirect jump, or rom -> iram jump, must use dispatcher |
| 1683 | emit_jump(A_COND_AL, ssp_drc_next); |
| 1684 | } |
| 1685 | else if (cond == A_COND_AL) { |
| 1686 | u32 *target = (pc < 0x400) ? |
| 1687 | ssp_block_table_iram[ssp->drc.iram_context * SSP_BLOCKTAB_IRAM_ONE + pc] : |
| 1688 | ssp_block_table[pc]; |
| 1689 | if (target != NULL) |
| 1690 | emit_jump(A_COND_AL, target); |
| 1691 | else { |
| 1692 | int ops = emit_jump(A_COND_AL, ssp_drc_next); |
| 1693 | // cause the next block to be emitted over jump instruction |
| 1694 | tcache_ptr -= ops; |
| 1695 | } |
| 1696 | } |
| 1697 | else { |
| 1698 | u32 *target1 = (pc < 0x400) ? |
| 1699 | ssp_block_table_iram[ssp->drc.iram_context * SSP_BLOCKTAB_IRAM_ONE + pc] : |
| 1700 | ssp_block_table[pc]; |
| 1701 | u32 *target2 = (end_pc < 0x400) ? |
| 1702 | ssp_block_table_iram[ssp->drc.iram_context * SSP_BLOCKTAB_IRAM_ONE + end_pc] : |
| 1703 | ssp_block_table[end_pc]; |
| 1704 | if (target1 != NULL) |
| 1705 | emit_jump(cond, target1); |
| 1706 | if (target2 != NULL) |
| 1707 | emit_jump(tr_neg_cond(cond), target2); // neg_cond, to be able to swap jumps if needed |
| 1708 | #ifndef __EPOC32__ |
| 1709 | // emit patchable branches |
| 1710 | if (target1 == NULL) |
| 1711 | emit_call(cond, ssp_drc_next_patch); |
| 1712 | if (target2 == NULL) |
| 1713 | emit_call(tr_neg_cond(cond), ssp_drc_next_patch); |
| 1714 | #else |
| 1715 | // won't patch indirect jumps |
| 1716 | if (target1 == NULL || target2 == NULL) |
| 1717 | emit_jump(A_COND_AL, ssp_drc_next); |
| 1718 | #endif |
| 1719 | } |
| 1720 | } |
| 1721 | |
| 1722 | void *ssp_translate_block(int pc) |
| 1723 | { |
| 1724 | unsigned int op, op1, imm, ccount = 0; |
| 1725 | unsigned int *block_start; |
| 1726 | int ret, end_cond = A_COND_AL, jump_pc = -1; |
| 1727 | |
| 1728 | //printf("translate %04x -> %04x\n", pc<<1, (tcache_ptr-tcache)<<2); |
| 1729 | |
| 1730 | block_start = tcache_ptr; |
| 1731 | known_regb = 0; |
| 1732 | dirty_regb = KRREG_P; |
| 1733 | known_regs.emu_status = 0; |
| 1734 | hostreg_clear(); |
| 1735 | |
| 1736 | emit_block_prologue(); |
| 1737 | |
| 1738 | for (; ccount < 100;) |
| 1739 | { |
| 1740 | op = PROGRAM(pc++); |
| 1741 | op1 = op >> 9; |
| 1742 | imm = (u32)-1; |
| 1743 | |
| 1744 | if ((op1 & 0xf) == 4 || (op1 & 0xf) == 6) |
| 1745 | imm = PROGRAM(pc++); // immediate |
| 1746 | |
| 1747 | ret = translate_op(op, &pc, imm, &end_cond, &jump_pc); |
| 1748 | if (ret <= 0) |
| 1749 | { |
| 1750 | elprintf(EL_ANOMALY, "NULL func! op=%08x (%02x)\n", op, op1); |
| 1751 | //exit(1); |
| 1752 | } |
| 1753 | |
| 1754 | ccount += ret & 0xffff; |
| 1755 | if (ret & 0x10000) break; |
| 1756 | } |
| 1757 | |
| 1758 | if (ccount >= 100) { |
| 1759 | end_cond = A_COND_AL; |
| 1760 | jump_pc = pc; |
| 1761 | emit_mov_const(A_COND_AL, 0, pc); |
| 1762 | } |
| 1763 | |
| 1764 | tr_flush_dirty_prs(); |
| 1765 | tr_flush_dirty_ST(); |
| 1766 | tr_flush_dirty_pmcrs(); |
| 1767 | emit_block_epilogue(ccount, end_cond, jump_pc, pc); |
| 1768 | |
| 1769 | if (tcache_ptr - tcache > DRC_TCACHE_SIZE/4) { |
| 1770 | elprintf(EL_ANOMALY|EL_STATUS|EL_SVP, "tcache overflow!\n"); |
| 1771 | fflush(stdout); |
| 1772 | exit(1); |
| 1773 | } |
| 1774 | |
| 1775 | // stats |
| 1776 | nblocks++; |
| 1777 | //printf("%i blocks, %i bytes, k=%.3f\n", nblocks, (tcache_ptr - tcache)*4, |
| 1778 | // (double)(tcache_ptr - tcache) / (double)n_in_ops); |
| 1779 | |
| 1780 | #ifdef DUMP_BLOCK |
| 1781 | { |
| 1782 | FILE *f = fopen("tcache.bin", "wb"); |
| 1783 | fwrite(tcache, 1, (tcache_ptr - tcache)*4, f); |
| 1784 | fclose(f); |
| 1785 | } |
| 1786 | printf("dumped tcache.bin\n"); |
| 1787 | exit(0); |
| 1788 | #endif |
| 1789 | |
| 1790 | handle_caches(); |
| 1791 | |
| 1792 | return block_start; |
| 1793 | } |
| 1794 | |
| 1795 | |
| 1796 | |
| 1797 | // ----------------------------------------------------- |
| 1798 | |
| 1799 | static void ssp1601_state_load(void) |
| 1800 | { |
| 1801 | ssp->drc.iram_dirty = 1; |
| 1802 | ssp->drc.iram_context = 0; |
| 1803 | } |
| 1804 | |
| 1805 | void ssp1601_dyn_exit(void) |
| 1806 | { |
| 1807 | free(ssp_block_table); |
| 1808 | free(ssp_block_table_iram); |
| 1809 | ssp_block_table = ssp_block_table_iram = NULL; |
| 1810 | |
| 1811 | drc_cmn_cleanup(); |
| 1812 | } |
| 1813 | |
| 1814 | int ssp1601_dyn_startup(void) |
| 1815 | { |
| 1816 | drc_cmn_init(); |
| 1817 | |
| 1818 | ssp_block_table = calloc(sizeof(ssp_block_table[0]), SSP_BLOCKTAB_ENTS); |
| 1819 | if (ssp_block_table == NULL) |
| 1820 | return -1; |
| 1821 | ssp_block_table_iram = calloc(sizeof(ssp_block_table_iram[0]), SSP_BLOCKTAB_IRAM_ENTS); |
| 1822 | if (ssp_block_table_iram == NULL) { |
| 1823 | free(ssp_block_table); |
| 1824 | return -1; |
| 1825 | } |
| 1826 | |
| 1827 | memset(tcache, 0, DRC_TCACHE_SIZE); |
| 1828 | tcache_ptr = tcache; |
| 1829 | |
| 1830 | PicoLoadStateHook = ssp1601_state_load; |
| 1831 | |
| 1832 | n_in_ops = 0; |
| 1833 | #ifdef ARM |
| 1834 | // hle'd blocks |
| 1835 | ssp_block_table[0x800/2] = (void *) ssp_hle_800; |
| 1836 | ssp_block_table[0x902/2] = (void *) ssp_hle_902; |
| 1837 | ssp_block_table_iram[ 7 * SSP_BLOCKTAB_IRAM_ENTS + 0x030/2] = (void *) ssp_hle_07_030; |
| 1838 | ssp_block_table_iram[ 7 * SSP_BLOCKTAB_IRAM_ENTS + 0x036/2] = (void *) ssp_hle_07_036; |
| 1839 | ssp_block_table_iram[ 7 * SSP_BLOCKTAB_IRAM_ENTS + 0x6d6/2] = (void *) ssp_hle_07_6d6; |
| 1840 | ssp_block_table_iram[11 * SSP_BLOCKTAB_IRAM_ENTS + 0x12c/2] = (void *) ssp_hle_11_12c; |
| 1841 | ssp_block_table_iram[11 * SSP_BLOCKTAB_IRAM_ENTS + 0x384/2] = (void *) ssp_hle_11_384; |
| 1842 | ssp_block_table_iram[11 * SSP_BLOCKTAB_IRAM_ENTS + 0x38a/2] = (void *) ssp_hle_11_38a; |
| 1843 | #endif |
| 1844 | |
| 1845 | return 0; |
| 1846 | } |
| 1847 | |
| 1848 | |
| 1849 | void ssp1601_dyn_reset(ssp1601_t *ssp) |
| 1850 | { |
| 1851 | ssp1601_reset(ssp); |
| 1852 | ssp->drc.iram_dirty = 1; |
| 1853 | ssp->drc.iram_context = 0; |
| 1854 | // must do this here because ssp is not available @ startup() |
| 1855 | ssp->drc.ptr_rom = (u32) Pico.rom; |
| 1856 | ssp->drc.ptr_iram_rom = (u32) svp->iram_rom; |
| 1857 | ssp->drc.ptr_dram = (u32) svp->dram; |
| 1858 | ssp->drc.ptr_btable = (u32) ssp_block_table; |
| 1859 | ssp->drc.ptr_btable_iram = (u32) ssp_block_table_iram; |
| 1860 | |
| 1861 | // prevent new versions of IRAM from appearing |
| 1862 | memset(svp->iram_rom, 0, 0x800); |
| 1863 | } |
| 1864 | |
| 1865 | |
| 1866 | void ssp1601_dyn_run(int cycles) |
| 1867 | { |
| 1868 | if (ssp->emu_status & SSP_WAIT_MASK) return; |
| 1869 | |
| 1870 | #ifdef DUMP_BLOCK |
| 1871 | ssp_translate_block(DUMP_BLOCK >> 1); |
| 1872 | #endif |
| 1873 | #ifdef ARM |
| 1874 | ssp_drc_entry(cycles); |
| 1875 | #endif |
| 1876 | } |
| 1877 | |