| 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 | #define COUNT_OP |
| 39 | #include "../../../cpu/drc/emit_arm.c" |
| 40 | |
| 41 | // ----------------------------------------------------- |
| 42 | |
| 43 | static int get_inc(int mode) |
| 44 | { |
| 45 | int inc = (mode >> 11) & 7; |
| 46 | if (inc != 0) { |
| 47 | if (inc != 7) inc--; |
| 48 | inc = 1 << inc; // 0 1 2 4 8 16 32 128 |
| 49 | if (mode & 0x8000) inc = -inc; // decrement mode |
| 50 | } |
| 51 | return inc; |
| 52 | } |
| 53 | |
| 54 | u32 ssp_pm_read(int reg) |
| 55 | { |
| 56 | u32 d = 0, mode; |
| 57 | |
| 58 | if (ssp->emu_status & SSP_PMC_SET) |
| 59 | { |
| 60 | ssp->pmac_read[reg] = rPMC.v; |
| 61 | ssp->emu_status &= ~SSP_PMC_SET; |
| 62 | return 0; |
| 63 | } |
| 64 | |
| 65 | // just in case |
| 66 | ssp->emu_status &= ~SSP_PMC_HAVE_ADDR; |
| 67 | |
| 68 | mode = ssp->pmac_read[reg]>>16; |
| 69 | if ((mode & 0xfff0) == 0x0800) // ROM |
| 70 | { |
| 71 | d = ((unsigned short *)Pico.rom)[ssp->pmac_read[reg]&0xfffff]; |
| 72 | ssp->pmac_read[reg] += 1; |
| 73 | } |
| 74 | else if ((mode & 0x47ff) == 0x0018) // DRAM |
| 75 | { |
| 76 | unsigned short *dram = (unsigned short *)svp->dram; |
| 77 | int inc = get_inc(mode); |
| 78 | d = dram[ssp->pmac_read[reg]&0xffff]; |
| 79 | ssp->pmac_read[reg] += inc; |
| 80 | } |
| 81 | |
| 82 | // PMC value corresponds to last PMR accessed |
| 83 | rPMC.v = ssp->pmac_read[reg]; |
| 84 | |
| 85 | return d; |
| 86 | } |
| 87 | |
| 88 | #define overwrite_write(dst, d) \ |
| 89 | { \ |
| 90 | if (d & 0xf000) { dst &= ~0xf000; dst |= d & 0xf000; } \ |
| 91 | if (d & 0x0f00) { dst &= ~0x0f00; dst |= d & 0x0f00; } \ |
| 92 | if (d & 0x00f0) { dst &= ~0x00f0; dst |= d & 0x00f0; } \ |
| 93 | if (d & 0x000f) { dst &= ~0x000f; dst |= d & 0x000f; } \ |
| 94 | } |
| 95 | |
| 96 | void ssp_pm_write(u32 d, int reg) |
| 97 | { |
| 98 | unsigned short *dram; |
| 99 | int mode, addr; |
| 100 | |
| 101 | if (ssp->emu_status & SSP_PMC_SET) |
| 102 | { |
| 103 | ssp->pmac_write[reg] = rPMC.v; |
| 104 | ssp->emu_status &= ~SSP_PMC_SET; |
| 105 | return; |
| 106 | } |
| 107 | |
| 108 | // just in case |
| 109 | ssp->emu_status &= ~SSP_PMC_HAVE_ADDR; |
| 110 | |
| 111 | dram = (unsigned short *)svp->dram; |
| 112 | mode = ssp->pmac_write[reg]>>16; |
| 113 | addr = ssp->pmac_write[reg]&0xffff; |
| 114 | if ((mode & 0x43ff) == 0x0018) // DRAM |
| 115 | { |
| 116 | int inc = get_inc(mode); |
| 117 | if (mode & 0x0400) { |
| 118 | overwrite_write(dram[addr], d); |
| 119 | } else dram[addr] = d; |
| 120 | ssp->pmac_write[reg] += inc; |
| 121 | } |
| 122 | else if ((mode & 0xfbff) == 0x4018) // DRAM, cell inc |
| 123 | { |
| 124 | if (mode & 0x0400) { |
| 125 | overwrite_write(dram[addr], d); |
| 126 | } else dram[addr] = d; |
| 127 | ssp->pmac_write[reg] += (addr&1) ? 0x1f : 1; |
| 128 | } |
| 129 | else if ((mode & 0x47ff) == 0x001c) // IRAM |
| 130 | { |
| 131 | int inc = get_inc(mode); |
| 132 | ((unsigned short *)svp->iram_rom)[addr&0x3ff] = d; |
| 133 | ssp->pmac_write[reg] += inc; |
| 134 | ssp->drc.iram_dirty = 1; |
| 135 | } |
| 136 | |
| 137 | rPMC.v = ssp->pmac_write[reg]; |
| 138 | } |
| 139 | |
| 140 | |
| 141 | // ----------------------------------------------------- |
| 142 | |
| 143 | // 14 IRAM blocks |
| 144 | static unsigned char iram_context_map[] = |
| 145 | { |
| 146 | 0, 0, 0, 0, 1, 0, 0, 0, // 04 |
| 147 | 0, 0, 0, 0, 0, 0, 2, 0, // 0e |
| 148 | 0, 0, 0, 0, 0, 3, 0, 4, // 15 17 |
| 149 | 5, 0, 0, 6, 0, 7, 0, 0, // 18 1b 1d |
| 150 | 8, 9, 0, 0, 0,10, 0, 0, // 20 21 25 |
| 151 | 0, 0, 0, 0, 0, 0, 0, 0, |
| 152 | 0, 0,11, 0, 0,12, 0, 0, // 32 35 |
| 153 | 13,14, 0, 0, 0, 0, 0, 0 // 38 39 |
| 154 | }; |
| 155 | |
| 156 | int ssp_get_iram_context(void) |
| 157 | { |
| 158 | unsigned char *ir = (unsigned char *)svp->iram_rom; |
| 159 | int val1, val = ir[0x083^1] + ir[0x4FA^1] + ir[0x5F7^1] + ir[0x47B^1]; |
| 160 | val1 = iram_context_map[(val>>1)&0x3f]; |
| 161 | |
| 162 | if (val1 == 0) { |
| 163 | elprintf(EL_ANOMALY, "svp: iram ctx val: %02x PC=%04x\n", (val>>1)&0x3f, rPC); |
| 164 | //debug_dump2file(name, svp->iram_rom, 0x800); |
| 165 | //exit(1); |
| 166 | } |
| 167 | return val1; |
| 168 | } |
| 169 | |
| 170 | // ----------------------------------------------------- |
| 171 | |
| 172 | /* regs with known values */ |
| 173 | static struct |
| 174 | { |
| 175 | ssp_reg_t gr[8]; |
| 176 | unsigned char r[8]; |
| 177 | unsigned int pmac_read[5]; |
| 178 | unsigned int pmac_write[5]; |
| 179 | ssp_reg_t pmc; |
| 180 | unsigned int emu_status; |
| 181 | } known_regs; |
| 182 | |
| 183 | #define KRREG_X (1 << SSP_X) |
| 184 | #define KRREG_Y (1 << SSP_Y) |
| 185 | #define KRREG_A (1 << SSP_A) /* AH only */ |
| 186 | #define KRREG_ST (1 << SSP_ST) |
| 187 | #define KRREG_STACK (1 << SSP_STACK) |
| 188 | #define KRREG_PC (1 << SSP_PC) |
| 189 | #define KRREG_P (1 << SSP_P) |
| 190 | #define KRREG_PR0 (1 << 8) |
| 191 | #define KRREG_PR4 (1 << 12) |
| 192 | #define KRREG_AL (1 << 16) |
| 193 | #define KRREG_PMCM (1 << 18) /* only mode word of PMC */ |
| 194 | #define KRREG_PMC (1 << 19) |
| 195 | #define KRREG_PM0R (1 << 20) |
| 196 | #define KRREG_PM1R (1 << 21) |
| 197 | #define KRREG_PM2R (1 << 22) |
| 198 | #define KRREG_PM3R (1 << 23) |
| 199 | #define KRREG_PM4R (1 << 24) |
| 200 | #define KRREG_PM0W (1 << 25) |
| 201 | #define KRREG_PM1W (1 << 26) |
| 202 | #define KRREG_PM2W (1 << 27) |
| 203 | #define KRREG_PM3W (1 << 28) |
| 204 | #define KRREG_PM4W (1 << 29) |
| 205 | |
| 206 | /* bitfield of known register values */ |
| 207 | static u32 known_regb = 0; |
| 208 | |
| 209 | /* known vals, which need to be flushed |
| 210 | * (only ST, P, r0-r7, PMCx, PMxR, PMxW) |
| 211 | * ST means flags are being held in ARM PSR |
| 212 | * P means that it needs to be recalculated |
| 213 | */ |
| 214 | static u32 dirty_regb = 0; |
| 215 | |
| 216 | /* known values of host regs. |
| 217 | * -1 - unknown |
| 218 | * 000000-00ffff - 16bit value |
| 219 | * 100000-10ffff - base reg (r7) + 16bit val |
| 220 | * 0r0000 - means reg (low) eq gr[r].h, r != AL |
| 221 | */ |
| 222 | static int hostreg_r[4]; |
| 223 | |
| 224 | static void hostreg_clear(void) |
| 225 | { |
| 226 | int i; |
| 227 | for (i = 0; i < 4; i++) |
| 228 | hostreg_r[i] = -1; |
| 229 | } |
| 230 | |
| 231 | static void hostreg_sspreg_changed(int sspreg) |
| 232 | { |
| 233 | int i; |
| 234 | for (i = 0; i < 4; i++) |
| 235 | if (hostreg_r[i] == (sspreg<<16)) hostreg_r[i] = -1; |
| 236 | } |
| 237 | |
| 238 | |
| 239 | #define PROGRAM(x) ((unsigned short *)svp->iram_rom)[x] |
| 240 | #define PROGRAM_P(x) ((unsigned short *)svp->iram_rom + (x)) |
| 241 | |
| 242 | void tr_unhandled(void) |
| 243 | { |
| 244 | //FILE *f = fopen("tcache.bin", "wb"); |
| 245 | //fwrite(tcache, 1, (tcache_ptr - tcache)*4, f); |
| 246 | //fclose(f); |
| 247 | elprintf(EL_ANOMALY, "unhandled @ %04x\n", known_regs.gr[SSP_PC].h<<1); |
| 248 | //exit(1); |
| 249 | } |
| 250 | |
| 251 | /* update P, if needed. Trashes r0 */ |
| 252 | static void tr_flush_dirty_P(void) |
| 253 | { |
| 254 | // TODO: const regs |
| 255 | if (!(dirty_regb & KRREG_P)) return; |
| 256 | EOP_MOV_REG_ASR(10, 4, 16); // mov r10, r4, asr #16 |
| 257 | EOP_MOV_REG_LSL( 0, 4, 16); // mov r0, r4, lsl #16 |
| 258 | EOP_MOV_REG_ASR( 0, 0, 15); // mov r0, r0, asr #15 |
| 259 | EOP_MUL(10, 0, 10); // mul r10, r0, r10 |
| 260 | dirty_regb &= ~KRREG_P; |
| 261 | hostreg_r[0] = -1; |
| 262 | } |
| 263 | |
| 264 | /* write dirty pr to host reg. Nothing is trashed */ |
| 265 | static void tr_flush_dirty_pr(int r) |
| 266 | { |
| 267 | int ror = 0, reg; |
| 268 | |
| 269 | if (!(dirty_regb & (1 << (r+8)))) return; |
| 270 | |
| 271 | switch (r&3) { |
| 272 | case 0: ror = 0; break; |
| 273 | case 1: ror = 24/2; break; |
| 274 | case 2: ror = 16/2; break; |
| 275 | } |
| 276 | reg = (r < 4) ? 8 : 9; |
| 277 | EOP_BIC_IMM(reg,reg,ror,0xff); |
| 278 | if (known_regs.r[r] != 0) |
| 279 | EOP_ORR_IMM(reg,reg,ror,known_regs.r[r]); |
| 280 | dirty_regb &= ~(1 << (r+8)); |
| 281 | } |
| 282 | |
| 283 | /* write all dirty pr0-pr7 to host regs. Nothing is trashed */ |
| 284 | static void tr_flush_dirty_prs(void) |
| 285 | { |
| 286 | int i, ror = 0, reg; |
| 287 | int dirty = dirty_regb >> 8; |
| 288 | if ((dirty&7) == 7) { |
| 289 | emith_move_r_imm(8, known_regs.r[0]|(known_regs.r[1]<<8)|(known_regs.r[2]<<16)); |
| 290 | dirty &= ~7; |
| 291 | } |
| 292 | if ((dirty&0x70) == 0x70) { |
| 293 | emith_move_r_imm(9, known_regs.r[4]|(known_regs.r[5]<<8)|(known_regs.r[6]<<16)); |
| 294 | dirty &= ~0x70; |
| 295 | } |
| 296 | /* r0-r7 */ |
| 297 | for (i = 0; dirty && i < 8; i++, dirty >>= 1) |
| 298 | { |
| 299 | if (!(dirty&1)) continue; |
| 300 | switch (i&3) { |
| 301 | case 0: ror = 0; break; |
| 302 | case 1: ror = 24/2; break; |
| 303 | case 2: ror = 16/2; break; |
| 304 | } |
| 305 | reg = (i < 4) ? 8 : 9; |
| 306 | EOP_BIC_IMM(reg,reg,ror,0xff); |
| 307 | if (known_regs.r[i] != 0) |
| 308 | EOP_ORR_IMM(reg,reg,ror,known_regs.r[i]); |
| 309 | } |
| 310 | dirty_regb &= ~0xff00; |
| 311 | } |
| 312 | |
| 313 | /* write dirty pr and "forget" it. Nothing is trashed. */ |
| 314 | static void tr_release_pr(int r) |
| 315 | { |
| 316 | tr_flush_dirty_pr(r); |
| 317 | known_regb &= ~(1 << (r+8)); |
| 318 | } |
| 319 | |
| 320 | /* fush ARM PSR to r6. Trashes r1 */ |
| 321 | static void tr_flush_dirty_ST(void) |
| 322 | { |
| 323 | if (!(dirty_regb & KRREG_ST)) return; |
| 324 | EOP_BIC_IMM(6,6,0,0x0f); |
| 325 | EOP_MRS(1); |
| 326 | EOP_ORR_REG_LSR(6,6,1,28); |
| 327 | dirty_regb &= ~KRREG_ST; |
| 328 | hostreg_r[1] = -1; |
| 329 | } |
| 330 | |
| 331 | /* inverse of above. Trashes r1 */ |
| 332 | static void tr_make_dirty_ST(void) |
| 333 | { |
| 334 | if (dirty_regb & KRREG_ST) return; |
| 335 | if (known_regb & KRREG_ST) { |
| 336 | int flags = 0; |
| 337 | if (known_regs.gr[SSP_ST].h & SSP_FLAG_N) flags |= 8; |
| 338 | if (known_regs.gr[SSP_ST].h & SSP_FLAG_Z) flags |= 4; |
| 339 | EOP_MSR_IMM(4/2, flags); |
| 340 | } else { |
| 341 | EOP_MOV_REG_LSL(1, 6, 28); |
| 342 | EOP_MSR_REG(1); |
| 343 | hostreg_r[1] = -1; |
| 344 | } |
| 345 | dirty_regb |= KRREG_ST; |
| 346 | } |
| 347 | |
| 348 | /* load 16bit val into host reg r0-r3. Nothing is trashed */ |
| 349 | static void tr_mov16(int r, int val) |
| 350 | { |
| 351 | if (hostreg_r[r] != val) { |
| 352 | emith_move_r_imm(r, val); |
| 353 | hostreg_r[r] = val; |
| 354 | } |
| 355 | } |
| 356 | |
| 357 | static void tr_mov16_cond(int cond, int r, int val) |
| 358 | { |
| 359 | emith_op_imm(cond, 0, A_OP_MOV, r, val); |
| 360 | hostreg_r[r] = -1; |
| 361 | } |
| 362 | |
| 363 | /* trashes r1 */ |
| 364 | static void tr_flush_dirty_pmcrs(void) |
| 365 | { |
| 366 | u32 i, val = (u32)-1; |
| 367 | if (!(dirty_regb & 0x3ff80000)) return; |
| 368 | |
| 369 | if (dirty_regb & KRREG_PMC) { |
| 370 | val = known_regs.pmc.v; |
| 371 | emith_move_r_imm(1, val); |
| 372 | EOP_STR_IMM(1,7,0x400+SSP_PMC*4); |
| 373 | |
| 374 | if (known_regs.emu_status & (SSP_PMC_SET|SSP_PMC_HAVE_ADDR)) { |
| 375 | elprintf(EL_ANOMALY, "!! SSP_PMC_SET|SSP_PMC_HAVE_ADDR set on flush\n"); |
| 376 | tr_unhandled(); |
| 377 | } |
| 378 | } |
| 379 | for (i = 0; i < 5; i++) |
| 380 | { |
| 381 | if (dirty_regb & (1 << (20+i))) { |
| 382 | if (val != known_regs.pmac_read[i]) { |
| 383 | val = known_regs.pmac_read[i]; |
| 384 | emith_move_r_imm(1, val); |
| 385 | } |
| 386 | EOP_STR_IMM(1,7,0x454+i*4); // pmac_read |
| 387 | } |
| 388 | if (dirty_regb & (1 << (25+i))) { |
| 389 | if (val != known_regs.pmac_write[i]) { |
| 390 | val = known_regs.pmac_write[i]; |
| 391 | emith_move_r_imm(1, val); |
| 392 | } |
| 393 | EOP_STR_IMM(1,7,0x46c+i*4); // pmac_write |
| 394 | } |
| 395 | } |
| 396 | dirty_regb &= ~0x3ff80000; |
| 397 | hostreg_r[1] = -1; |
| 398 | } |
| 399 | |
| 400 | /* read bank word to r0 (upper bits zero). Thrashes r1. */ |
| 401 | static void tr_bank_read(int addr) /* word addr 0-0x1ff */ |
| 402 | { |
| 403 | int breg = 7; |
| 404 | if (addr > 0x7f) { |
| 405 | if (hostreg_r[1] != (0x100000|((addr&0x180)<<1))) { |
| 406 | EOP_ADD_IMM(1,7,30/2,(addr&0x180)>>1); // add r1, r7, ((op&0x180)<<1) |
| 407 | hostreg_r[1] = 0x100000|((addr&0x180)<<1); |
| 408 | } |
| 409 | breg = 1; |
| 410 | } |
| 411 | EOP_LDRH_IMM(0,breg,(addr&0x7f)<<1); // ldrh r0, [r1, (op&0x7f)<<1] |
| 412 | hostreg_r[0] = -1; |
| 413 | } |
| 414 | |
| 415 | /* write r0 to bank. Trashes r1. */ |
| 416 | static void tr_bank_write(int addr) |
| 417 | { |
| 418 | int breg = 7; |
| 419 | if (addr > 0x7f) { |
| 420 | if (hostreg_r[1] != (0x100000|((addr&0x180)<<1))) { |
| 421 | EOP_ADD_IMM(1,7,30/2,(addr&0x180)>>1); // add r1, r7, ((op&0x180)<<1) |
| 422 | hostreg_r[1] = 0x100000|((addr&0x180)<<1); |
| 423 | } |
| 424 | breg = 1; |
| 425 | } |
| 426 | EOP_STRH_IMM(0,breg,(addr&0x7f)<<1); // strh r0, [r1, (op&0x7f)<<1] |
| 427 | } |
| 428 | |
| 429 | /* handle RAM bank pointer modifiers. if need_modulo, trash r1-r3, else nothing */ |
| 430 | static void tr_ptrr_mod(int r, int mod, int need_modulo, int count) |
| 431 | { |
| 432 | int modulo_shift = -1; /* unknown */ |
| 433 | |
| 434 | if (mod == 0) return; |
| 435 | |
| 436 | if (!need_modulo || mod == 1) // +! |
| 437 | modulo_shift = 8; |
| 438 | else if (need_modulo && (known_regb & KRREG_ST)) { |
| 439 | modulo_shift = known_regs.gr[SSP_ST].h & 7; |
| 440 | if (modulo_shift == 0) modulo_shift = 8; |
| 441 | } |
| 442 | |
| 443 | if (modulo_shift == -1) |
| 444 | { |
| 445 | int reg = (r < 4) ? 8 : 9; |
| 446 | tr_release_pr(r); |
| 447 | if (dirty_regb & KRREG_ST) { |
| 448 | // avoid flushing ARM flags |
| 449 | EOP_AND_IMM(1, 6, 0, 0x70); |
| 450 | EOP_SUB_IMM(1, 1, 0, 0x10); |
| 451 | EOP_AND_IMM(1, 1, 0, 0x70); |
| 452 | EOP_ADD_IMM(1, 1, 0, 0x10); |
| 453 | } else { |
| 454 | EOP_C_DOP_IMM(A_COND_AL,A_OP_AND,1,6,1,0,0x70); // ands r1, r6, #0x70 |
| 455 | EOP_C_DOP_IMM(A_COND_EQ,A_OP_MOV,0,0,1,0,0x80); // moveq r1, #0x80 |
| 456 | } |
| 457 | EOP_MOV_REG_LSR(1, 1, 4); // mov r1, r1, lsr #4 |
| 458 | EOP_RSB_IMM(2, 1, 0, 8); // rsb r1, r1, #8 |
| 459 | EOP_MOV_IMM(3, 8/2, count); // mov r3, #0x01000000 |
| 460 | if (r&3) |
| 461 | EOP_ADD_IMM(1, 1, 0, (r&3)*8); // add r1, r1, #(r&3)*8 |
| 462 | EOP_MOV_REG2_ROR(reg,reg,1); // mov reg, reg, ror r1 |
| 463 | if (mod == 2) |
| 464 | EOP_SUB_REG2_LSL(reg,reg,3,2); // sub reg, reg, #0x01000000 << r2 |
| 465 | else EOP_ADD_REG2_LSL(reg,reg,3,2); |
| 466 | EOP_RSB_IMM(1, 1, 0, 32); // rsb r1, r1, #32 |
| 467 | EOP_MOV_REG2_ROR(reg,reg,1); // mov reg, reg, ror r1 |
| 468 | hostreg_r[1] = hostreg_r[2] = hostreg_r[3] = -1; |
| 469 | } |
| 470 | else if (known_regb & (1 << (r + 8))) |
| 471 | { |
| 472 | int modulo = (1 << modulo_shift) - 1; |
| 473 | if (mod == 2) |
| 474 | known_regs.r[r] = (known_regs.r[r] & ~modulo) | ((known_regs.r[r] - count) & modulo); |
| 475 | else known_regs.r[r] = (known_regs.r[r] & ~modulo) | ((known_regs.r[r] + count) & modulo); |
| 476 | } |
| 477 | else |
| 478 | { |
| 479 | int reg = (r < 4) ? 8 : 9; |
| 480 | int ror = ((r&3) + 1)*8 - (8 - modulo_shift); |
| 481 | EOP_MOV_REG_ROR(reg,reg,ror); |
| 482 | // {add|sub} reg, reg, #1<<shift |
| 483 | EOP_C_DOP_IMM(A_COND_AL,(mod==2)?A_OP_SUB:A_OP_ADD,0,reg,reg, 8/2, count << (8 - modulo_shift)); |
| 484 | EOP_MOV_REG_ROR(reg,reg,32-ror); |
| 485 | } |
| 486 | } |
| 487 | |
| 488 | /* handle writes r0 to (rX). Trashes r1. |
| 489 | * fortunately we can ignore modulo increment modes for writes. */ |
| 490 | static void tr_rX_write(int op) |
| 491 | { |
| 492 | if ((op&3) == 3) |
| 493 | { |
| 494 | int mod = (op>>2) & 3; // direct addressing |
| 495 | tr_bank_write((op & 0x100) + mod); |
| 496 | } |
| 497 | else |
| 498 | { |
| 499 | int r = (op&3) | ((op>>6)&4); |
| 500 | if (known_regb & (1 << (r + 8))) { |
| 501 | tr_bank_write((op&0x100) | known_regs.r[r]); |
| 502 | } else { |
| 503 | int reg = (r < 4) ? 8 : 9; |
| 504 | int ror = ((4 - (r&3))*8) & 0x1f; |
| 505 | EOP_AND_IMM(1,reg,ror/2,0xff); // and r1, r{7,8}, <mask> |
| 506 | if (r >= 4) |
| 507 | EOP_ORR_IMM(1,1,((ror-8)&0x1f)/2,1); // orr r1, r1, 1<<shift |
| 508 | if (r&3) EOP_ADD_REG_LSR(1,7,1, (r&3)*8-1); // add r1, r7, r1, lsr #lsr |
| 509 | else EOP_ADD_REG_LSL(1,7,1,1); |
| 510 | EOP_STRH_SIMPLE(0,1); // strh r0, [r1] |
| 511 | hostreg_r[1] = -1; |
| 512 | } |
| 513 | tr_ptrr_mod(r, (op>>2) & 3, 0, 1); |
| 514 | } |
| 515 | } |
| 516 | |
| 517 | /* read (rX) to r0. Trashes r1-r3. */ |
| 518 | static void tr_rX_read(int r, int mod) |
| 519 | { |
| 520 | if ((r&3) == 3) |
| 521 | { |
| 522 | tr_bank_read(((r << 6) & 0x100) + mod); // direct addressing |
| 523 | } |
| 524 | else |
| 525 | { |
| 526 | if (known_regb & (1 << (r + 8))) { |
| 527 | tr_bank_read(((r << 6) & 0x100) | known_regs.r[r]); |
| 528 | } else { |
| 529 | int reg = (r < 4) ? 8 : 9; |
| 530 | int ror = ((4 - (r&3))*8) & 0x1f; |
| 531 | EOP_AND_IMM(1,reg,ror/2,0xff); // and r1, r{7,8}, <mask> |
| 532 | if (r >= 4) |
| 533 | EOP_ORR_IMM(1,1,((ror-8)&0x1f)/2,1); // orr r1, r1, 1<<shift |
| 534 | if (r&3) EOP_ADD_REG_LSR(1,7,1, (r&3)*8-1); // add r1, r7, r1, lsr #lsr |
| 535 | else EOP_ADD_REG_LSL(1,7,1,1); |
| 536 | EOP_LDRH_SIMPLE(0,1); // ldrh r0, [r1] |
| 537 | hostreg_r[0] = hostreg_r[1] = -1; |
| 538 | } |
| 539 | tr_ptrr_mod(r, mod, 1, 1); |
| 540 | } |
| 541 | } |
| 542 | |
| 543 | /* read ((rX)) to r0. Trashes r1,r2. */ |
| 544 | static void tr_rX_read2(int op) |
| 545 | { |
| 546 | int r = (op&3) | ((op>>6)&4); // src |
| 547 | |
| 548 | if ((r&3) == 3) { |
| 549 | tr_bank_read((op&0x100) | ((op>>2)&3)); |
| 550 | } else if (known_regb & (1 << (r+8))) { |
| 551 | tr_bank_read((op&0x100) | known_regs.r[r]); |
| 552 | } else { |
| 553 | int reg = (r < 4) ? 8 : 9; |
| 554 | int ror = ((4 - (r&3))*8) & 0x1f; |
| 555 | EOP_AND_IMM(1,reg,ror/2,0xff); // and r1, r{7,8}, <mask> |
| 556 | if (r >= 4) |
| 557 | EOP_ORR_IMM(1,1,((ror-8)&0x1f)/2,1); // orr r1, r1, 1<<shift |
| 558 | if (r&3) EOP_ADD_REG_LSR(1,7,1, (r&3)*8-1); // add r1, r7, r1, lsr #lsr |
| 559 | else EOP_ADD_REG_LSL(1,7,1,1); |
| 560 | EOP_LDRH_SIMPLE(0,1); // ldrh r0, [r1] |
| 561 | } |
| 562 | EOP_LDR_IMM(2,7,0x48c); // ptr_iram_rom |
| 563 | EOP_ADD_REG_LSL(2,2,0,1); // add r2, r2, r0, lsl #1 |
| 564 | EOP_ADD_IMM(0,0,0,1); // add r0, r0, #1 |
| 565 | if ((r&3) == 3) { |
| 566 | tr_bank_write((op&0x100) | ((op>>2)&3)); |
| 567 | } else if (known_regb & (1 << (r+8))) { |
| 568 | tr_bank_write((op&0x100) | known_regs.r[r]); |
| 569 | } else { |
| 570 | EOP_STRH_SIMPLE(0,1); // strh r0, [r1] |
| 571 | hostreg_r[1] = -1; |
| 572 | } |
| 573 | EOP_LDRH_SIMPLE(0,2); // ldrh r0, [r2] |
| 574 | hostreg_r[0] = hostreg_r[2] = -1; |
| 575 | } |
| 576 | |
| 577 | // check if AL is going to be used later in block |
| 578 | static int tr_predict_al_need(void) |
| 579 | { |
| 580 | int tmpv, tmpv2, op, pc = known_regs.gr[SSP_PC].h; |
| 581 | |
| 582 | while (1) |
| 583 | { |
| 584 | op = PROGRAM(pc); |
| 585 | switch (op >> 9) |
| 586 | { |
| 587 | // ld d, s |
| 588 | case 0x00: |
| 589 | tmpv2 = (op >> 4) & 0xf; // dst |
| 590 | tmpv = op & 0xf; // src |
| 591 | if ((tmpv2 == SSP_A && tmpv == SSP_P) || tmpv2 == SSP_AL) // ld A, P; ld AL, * |
| 592 | return 0; |
| 593 | break; |
| 594 | |
| 595 | // ld (ri), s |
| 596 | case 0x02: |
| 597 | // ld ri, s |
| 598 | case 0x0a: |
| 599 | // OP a, s |
| 600 | case 0x10: case 0x30: case 0x40: case 0x60: case 0x70: |
| 601 | tmpv = op & 0xf; // src |
| 602 | if (tmpv == SSP_AL) // OP *, AL |
| 603 | return 1; |
| 604 | break; |
| 605 | |
| 606 | case 0x04: |
| 607 | case 0x06: |
| 608 | case 0x14: |
| 609 | case 0x34: |
| 610 | case 0x44: |
| 611 | case 0x64: |
| 612 | case 0x74: pc++; break; |
| 613 | |
| 614 | // call cond, addr |
| 615 | case 0x24: |
| 616 | // bra cond, addr |
| 617 | case 0x26: |
| 618 | // mod cond, op |
| 619 | case 0x48: |
| 620 | // mpys? |
| 621 | case 0x1b: |
| 622 | // mpya (rj), (ri), b |
| 623 | case 0x4b: return 1; |
| 624 | |
| 625 | // mld (rj), (ri), b |
| 626 | case 0x5b: return 0; // cleared anyway |
| 627 | |
| 628 | // and A, * |
| 629 | case 0x50: |
| 630 | tmpv = op & 0xf; // src |
| 631 | if (tmpv == SSP_AL) return 1; |
| 632 | case 0x51: case 0x53: case 0x54: case 0x55: case 0x59: case 0x5c: |
| 633 | return 0; |
| 634 | } |
| 635 | pc++; |
| 636 | } |
| 637 | } |
| 638 | |
| 639 | |
| 640 | /* get ARM cond which would mean that SSP cond is satisfied. No trash. */ |
| 641 | static int tr_cond_check(int op) |
| 642 | { |
| 643 | int f = (op & 0x100) >> 8; |
| 644 | switch (op&0xf0) { |
| 645 | case 0x00: return A_COND_AL; /* always true */ |
| 646 | case 0x50: /* Z matches f(?) bit */ |
| 647 | if (dirty_regb & KRREG_ST) return f ? A_COND_EQ : A_COND_NE; |
| 648 | EOP_TST_IMM(6, 0, 4); |
| 649 | return f ? A_COND_NE : A_COND_EQ; |
| 650 | case 0x70: /* N matches f(?) bit */ |
| 651 | if (dirty_regb & KRREG_ST) return f ? A_COND_MI : A_COND_PL; |
| 652 | EOP_TST_IMM(6, 0, 8); |
| 653 | return f ? A_COND_NE : A_COND_EQ; |
| 654 | default: |
| 655 | elprintf(EL_ANOMALY, "unimplemented cond?\n"); |
| 656 | tr_unhandled(); |
| 657 | return 0; |
| 658 | } |
| 659 | } |
| 660 | |
| 661 | static int tr_neg_cond(int cond) |
| 662 | { |
| 663 | switch (cond) { |
| 664 | case A_COND_AL: elprintf(EL_ANOMALY, "neg for AL?\n"); exit(1); |
| 665 | case A_COND_EQ: return A_COND_NE; |
| 666 | case A_COND_NE: return A_COND_EQ; |
| 667 | case A_COND_MI: return A_COND_PL; |
| 668 | case A_COND_PL: return A_COND_MI; |
| 669 | default: elprintf(EL_ANOMALY, "bad cond for neg\n"); exit(1); |
| 670 | } |
| 671 | return 0; |
| 672 | } |
| 673 | |
| 674 | static int tr_aop_ssp2arm(int op) |
| 675 | { |
| 676 | switch (op) { |
| 677 | case 1: return A_OP_SUB; |
| 678 | case 3: return A_OP_CMP; |
| 679 | case 4: return A_OP_ADD; |
| 680 | case 5: return A_OP_AND; |
| 681 | case 6: return A_OP_ORR; |
| 682 | case 7: return A_OP_EOR; |
| 683 | } |
| 684 | |
| 685 | tr_unhandled(); |
| 686 | return 0; |
| 687 | } |
| 688 | |
| 689 | // ----------------------------------------------------- |
| 690 | |
| 691 | //@ r4: XXYY |
| 692 | //@ r5: A |
| 693 | //@ r6: STACK and emu flags |
| 694 | //@ r7: SSP context |
| 695 | //@ r10: P |
| 696 | |
| 697 | // read general reg to r0. Trashes r1 |
| 698 | static void tr_GR0_to_r0(int op) |
| 699 | { |
| 700 | tr_mov16(0, 0xffff); |
| 701 | } |
| 702 | |
| 703 | static void tr_X_to_r0(int op) |
| 704 | { |
| 705 | if (hostreg_r[0] != (SSP_X<<16)) { |
| 706 | EOP_MOV_REG_LSR(0, 4, 16); // mov r0, r4, lsr #16 |
| 707 | hostreg_r[0] = SSP_X<<16; |
| 708 | } |
| 709 | } |
| 710 | |
| 711 | static void tr_Y_to_r0(int op) |
| 712 | { |
| 713 | if (hostreg_r[0] != (SSP_Y<<16)) { |
| 714 | EOP_MOV_REG_SIMPLE(0, 4); // mov r0, r4 |
| 715 | hostreg_r[0] = SSP_Y<<16; |
| 716 | } |
| 717 | } |
| 718 | |
| 719 | static void tr_A_to_r0(int op) |
| 720 | { |
| 721 | if (hostreg_r[0] != (SSP_A<<16)) { |
| 722 | EOP_MOV_REG_LSR(0, 5, 16); // mov r0, r5, lsr #16 @ AH |
| 723 | hostreg_r[0] = SSP_A<<16; |
| 724 | } |
| 725 | } |
| 726 | |
| 727 | static void tr_ST_to_r0(int op) |
| 728 | { |
| 729 | // VR doesn't need much accuracy here.. |
| 730 | EOP_MOV_REG_LSR(0, 6, 4); // mov r0, r6, lsr #4 |
| 731 | EOP_AND_IMM(0, 0, 0, 0x67); // and r0, r0, #0x67 |
| 732 | hostreg_r[0] = -1; |
| 733 | } |
| 734 | |
| 735 | static void tr_STACK_to_r0(int op) |
| 736 | { |
| 737 | // 448 |
| 738 | EOP_SUB_IMM(6, 6, 8/2, 0x20); // sub r6, r6, #1<<29 |
| 739 | EOP_ADD_IMM(1, 7, 24/2, 0x04); // add r1, r7, 0x400 |
| 740 | EOP_ADD_IMM(1, 1, 0, 0x48); // add r1, r1, 0x048 |
| 741 | EOP_ADD_REG_LSR(1, 1, 6, 28); // add r1, r1, r6, lsr #28 |
| 742 | EOP_LDRH_SIMPLE(0, 1); // ldrh r0, [r1] |
| 743 | hostreg_r[0] = hostreg_r[1] = -1; |
| 744 | } |
| 745 | |
| 746 | static void tr_PC_to_r0(int op) |
| 747 | { |
| 748 | tr_mov16(0, known_regs.gr[SSP_PC].h); |
| 749 | } |
| 750 | |
| 751 | static void tr_P_to_r0(int op) |
| 752 | { |
| 753 | tr_flush_dirty_P(); |
| 754 | EOP_MOV_REG_LSR(0, 10, 16); // mov r0, r10, lsr #16 |
| 755 | hostreg_r[0] = -1; |
| 756 | } |
| 757 | |
| 758 | static void tr_AL_to_r0(int op) |
| 759 | { |
| 760 | if (op == 0x000f) { |
| 761 | if (known_regb & KRREG_PMC) { |
| 762 | known_regs.emu_status &= ~(SSP_PMC_SET|SSP_PMC_HAVE_ADDR); |
| 763 | } else { |
| 764 | EOP_LDR_IMM(0,7,0x484); // ldr r1, [r7, #0x484] // emu_status |
| 765 | EOP_BIC_IMM(0,0,0,SSP_PMC_SET|SSP_PMC_HAVE_ADDR); |
| 766 | EOP_STR_IMM(0,7,0x484); |
| 767 | } |
| 768 | } |
| 769 | |
| 770 | if (hostreg_r[0] != (SSP_AL<<16)) { |
| 771 | EOP_MOV_REG_SIMPLE(0, 5); // mov r0, r5 |
| 772 | hostreg_r[0] = SSP_AL<<16; |
| 773 | } |
| 774 | } |
| 775 | |
| 776 | static void tr_PMX_to_r0(int reg) |
| 777 | { |
| 778 | if ((known_regb & KRREG_PMC) && (known_regs.emu_status & SSP_PMC_SET)) |
| 779 | { |
| 780 | known_regs.pmac_read[reg] = known_regs.pmc.v; |
| 781 | known_regs.emu_status &= ~SSP_PMC_SET; |
| 782 | known_regb |= 1 << (20+reg); |
| 783 | dirty_regb |= 1 << (20+reg); |
| 784 | return; |
| 785 | } |
| 786 | |
| 787 | if ((known_regb & KRREG_PMC) && (known_regb & (1 << (20+reg)))) |
| 788 | { |
| 789 | u32 pmcv = known_regs.pmac_read[reg]; |
| 790 | int mode = pmcv>>16; |
| 791 | known_regs.emu_status &= ~SSP_PMC_HAVE_ADDR; |
| 792 | |
| 793 | if ((mode & 0xfff0) == 0x0800) |
| 794 | { |
| 795 | EOP_LDR_IMM(1,7,0x488); // rom_ptr |
| 796 | emith_move_r_imm(0, (pmcv&0xfffff)<<1); |
| 797 | EOP_LDRH_REG(0,1,0); // ldrh r0, [r1, r0] |
| 798 | known_regs.pmac_read[reg] += 1; |
| 799 | } |
| 800 | else if ((mode & 0x47ff) == 0x0018) // DRAM |
| 801 | { |
| 802 | int inc = get_inc(mode); |
| 803 | EOP_LDR_IMM(1,7,0x490); // dram_ptr |
| 804 | emith_move_r_imm(0, (pmcv&0xffff)<<1); |
| 805 | EOP_LDRH_REG(0,1,0); // ldrh r0, [r1, r0] |
| 806 | if (reg == 4 && (pmcv == 0x187f03 || pmcv == 0x187f04)) // wait loop detection |
| 807 | { |
| 808 | int flag = (pmcv == 0x187f03) ? SSP_WAIT_30FE06 : SSP_WAIT_30FE08; |
| 809 | tr_flush_dirty_ST(); |
| 810 | EOP_LDR_IMM(1,7,0x484); // ldr r1, [r7, #0x484] // emu_status |
| 811 | EOP_TST_REG_SIMPLE(0,0); |
| 812 | EOP_C_DOP_IMM(A_COND_EQ,A_OP_SUB,0,11,11,22/2,1); // subeq r11, r11, #1024 |
| 813 | EOP_C_DOP_IMM(A_COND_EQ,A_OP_ORR,0, 1, 1,24/2,flag>>8); // orreq r1, r1, #SSP_WAIT_30FE08 |
| 814 | EOP_STR_IMM(1,7,0x484); // str r1, [r7, #0x484] // emu_status |
| 815 | } |
| 816 | known_regs.pmac_read[reg] += inc; |
| 817 | } |
| 818 | else |
| 819 | { |
| 820 | tr_unhandled(); |
| 821 | } |
| 822 | known_regs.pmc.v = known_regs.pmac_read[reg]; |
| 823 | //known_regb |= KRREG_PMC; |
| 824 | dirty_regb |= KRREG_PMC; |
| 825 | dirty_regb |= 1 << (20+reg); |
| 826 | hostreg_r[0] = hostreg_r[1] = -1; |
| 827 | return; |
| 828 | } |
| 829 | |
| 830 | known_regb &= ~KRREG_PMC; |
| 831 | dirty_regb &= ~KRREG_PMC; |
| 832 | known_regb &= ~(1 << (20+reg)); |
| 833 | dirty_regb &= ~(1 << (20+reg)); |
| 834 | |
| 835 | // call the C code to handle this |
| 836 | tr_flush_dirty_ST(); |
| 837 | //tr_flush_dirty_pmcrs(); |
| 838 | tr_mov16(0, reg); |
| 839 | emith_call(ssp_pm_read); |
| 840 | hostreg_clear(); |
| 841 | } |
| 842 | |
| 843 | static void tr_PM0_to_r0(int op) |
| 844 | { |
| 845 | tr_PMX_to_r0(0); |
| 846 | } |
| 847 | |
| 848 | static void tr_PM1_to_r0(int op) |
| 849 | { |
| 850 | tr_PMX_to_r0(1); |
| 851 | } |
| 852 | |
| 853 | static void tr_PM2_to_r0(int op) |
| 854 | { |
| 855 | tr_PMX_to_r0(2); |
| 856 | } |
| 857 | |
| 858 | static void tr_XST_to_r0(int op) |
| 859 | { |
| 860 | EOP_ADD_IMM(0, 7, 24/2, 4); // add r0, r7, #0x400 |
| 861 | EOP_LDRH_IMM(0, 0, SSP_XST*4+2); |
| 862 | } |
| 863 | |
| 864 | static void tr_PM4_to_r0(int op) |
| 865 | { |
| 866 | tr_PMX_to_r0(4); |
| 867 | } |
| 868 | |
| 869 | static void tr_PMC_to_r0(int op) |
| 870 | { |
| 871 | if (known_regb & KRREG_PMC) |
| 872 | { |
| 873 | if (known_regs.emu_status & SSP_PMC_HAVE_ADDR) { |
| 874 | known_regs.emu_status |= SSP_PMC_SET; |
| 875 | known_regs.emu_status &= ~SSP_PMC_HAVE_ADDR; |
| 876 | // do nothing - this is handled elsewhere |
| 877 | } else { |
| 878 | tr_mov16(0, known_regs.pmc.l); |
| 879 | known_regs.emu_status |= SSP_PMC_HAVE_ADDR; |
| 880 | } |
| 881 | } |
| 882 | else |
| 883 | { |
| 884 | EOP_LDR_IMM(1,7,0x484); // ldr r1, [r7, #0x484] // emu_status |
| 885 | tr_flush_dirty_ST(); |
| 886 | if (op != 0x000e) |
| 887 | EOP_LDR_IMM(0, 7, 0x400+SSP_PMC*4); |
| 888 | EOP_TST_IMM(1, 0, SSP_PMC_HAVE_ADDR); |
| 889 | EOP_C_DOP_IMM(A_COND_EQ,A_OP_ORR,0, 1, 1, 0, SSP_PMC_HAVE_ADDR); // orreq r1, r1, #.. |
| 890 | EOP_C_DOP_IMM(A_COND_NE,A_OP_BIC,0, 1, 1, 0, SSP_PMC_HAVE_ADDR); // bicne r1, r1, #.. |
| 891 | EOP_C_DOP_IMM(A_COND_NE,A_OP_ORR,0, 1, 1, 0, SSP_PMC_SET); // orrne r1, r1, #.. |
| 892 | EOP_STR_IMM(1,7,0x484); |
| 893 | hostreg_r[0] = hostreg_r[1] = -1; |
| 894 | } |
| 895 | } |
| 896 | |
| 897 | |
| 898 | typedef void (tr_read_func)(int op); |
| 899 | |
| 900 | static tr_read_func *tr_read_funcs[16] = |
| 901 | { |
| 902 | tr_GR0_to_r0, |
| 903 | tr_X_to_r0, |
| 904 | tr_Y_to_r0, |
| 905 | tr_A_to_r0, |
| 906 | tr_ST_to_r0, |
| 907 | tr_STACK_to_r0, |
| 908 | tr_PC_to_r0, |
| 909 | tr_P_to_r0, |
| 910 | tr_PM0_to_r0, |
| 911 | tr_PM1_to_r0, |
| 912 | tr_PM2_to_r0, |
| 913 | tr_XST_to_r0, |
| 914 | tr_PM4_to_r0, |
| 915 | (tr_read_func *)tr_unhandled, |
| 916 | tr_PMC_to_r0, |
| 917 | tr_AL_to_r0 |
| 918 | }; |
| 919 | |
| 920 | |
| 921 | // write r0 to general reg handlers. Trashes r1 |
| 922 | #define TR_WRITE_R0_TO_REG(reg) \ |
| 923 | { \ |
| 924 | hostreg_sspreg_changed(reg); \ |
| 925 | hostreg_r[0] = (reg)<<16; \ |
| 926 | if (const_val != -1) { \ |
| 927 | known_regs.gr[reg].h = const_val; \ |
| 928 | known_regb |= 1 << (reg); \ |
| 929 | } else { \ |
| 930 | known_regb &= ~(1 << (reg)); \ |
| 931 | } \ |
| 932 | } |
| 933 | |
| 934 | static void tr_r0_to_GR0(int const_val) |
| 935 | { |
| 936 | // do nothing |
| 937 | } |
| 938 | |
| 939 | static void tr_r0_to_X(int const_val) |
| 940 | { |
| 941 | EOP_MOV_REG_LSL(4, 4, 16); // mov r4, r4, lsl #16 |
| 942 | EOP_MOV_REG_LSR(4, 4, 16); // mov r4, r4, lsr #16 |
| 943 | EOP_ORR_REG_LSL(4, 4, 0, 16); // orr r4, r4, r0, lsl #16 |
| 944 | dirty_regb |= KRREG_P; // touching X or Y makes P dirty. |
| 945 | TR_WRITE_R0_TO_REG(SSP_X); |
| 946 | } |
| 947 | |
| 948 | static void tr_r0_to_Y(int const_val) |
| 949 | { |
| 950 | EOP_MOV_REG_LSR(4, 4, 16); // mov r4, r4, lsr #16 |
| 951 | EOP_ORR_REG_LSL(4, 4, 0, 16); // orr r4, r4, r0, lsl #16 |
| 952 | EOP_MOV_REG_ROR(4, 4, 16); // mov r4, r4, ror #16 |
| 953 | dirty_regb |= KRREG_P; |
| 954 | TR_WRITE_R0_TO_REG(SSP_Y); |
| 955 | } |
| 956 | |
| 957 | static void tr_r0_to_A(int const_val) |
| 958 | { |
| 959 | if (tr_predict_al_need()) { |
| 960 | EOP_MOV_REG_LSL(5, 5, 16); // mov r5, r5, lsl #16 |
| 961 | EOP_MOV_REG_LSR(5, 5, 16); // mov r5, r5, lsr #16 @ AL |
| 962 | EOP_ORR_REG_LSL(5, 5, 0, 16); // orr r5, r5, r0, lsl #16 |
| 963 | } |
| 964 | else |
| 965 | EOP_MOV_REG_LSL(5, 0, 16); |
| 966 | TR_WRITE_R0_TO_REG(SSP_A); |
| 967 | } |
| 968 | |
| 969 | static void tr_r0_to_ST(int const_val) |
| 970 | { |
| 971 | // VR doesn't need much accuracy here.. |
| 972 | EOP_AND_IMM(1, 0, 0, 0x67); // and r1, r0, #0x67 |
| 973 | EOP_AND_IMM(6, 6, 8/2, 0xe0); // and r6, r6, #7<<29 @ preserve STACK |
| 974 | EOP_ORR_REG_LSL(6, 6, 1, 4); // orr r6, r6, r1, lsl #4 |
| 975 | TR_WRITE_R0_TO_REG(SSP_ST); |
| 976 | hostreg_r[1] = -1; |
| 977 | dirty_regb &= ~KRREG_ST; |
| 978 | } |
| 979 | |
| 980 | static void tr_r0_to_STACK(int const_val) |
| 981 | { |
| 982 | // 448 |
| 983 | EOP_ADD_IMM(1, 7, 24/2, 0x04); // add r1, r7, 0x400 |
| 984 | EOP_ADD_IMM(1, 1, 0, 0x48); // add r1, r1, 0x048 |
| 985 | EOP_ADD_REG_LSR(1, 1, 6, 28); // add r1, r1, r6, lsr #28 |
| 986 | EOP_STRH_SIMPLE(0, 1); // strh r0, [r1] |
| 987 | EOP_ADD_IMM(6, 6, 8/2, 0x20); // add r6, r6, #1<<29 |
| 988 | hostreg_r[1] = -1; |
| 989 | } |
| 990 | |
| 991 | static void tr_r0_to_PC(int const_val) |
| 992 | { |
| 993 | /* |
| 994 | * do nothing - dispatcher will take care of this |
| 995 | EOP_MOV_REG_LSL(1, 0, 16); // mov r1, r0, lsl #16 |
| 996 | EOP_STR_IMM(1,7,0x400+6*4); // str r1, [r7, #(0x400+6*8)] |
| 997 | hostreg_r[1] = -1; |
| 998 | */ |
| 999 | } |
| 1000 | |
| 1001 | static void tr_r0_to_AL(int const_val) |
| 1002 | { |
| 1003 | EOP_MOV_REG_LSR(5, 5, 16); // mov r5, r5, lsr #16 |
| 1004 | EOP_ORR_REG_LSL(5, 5, 0, 16); // orr r5, r5, r0, lsl #16 |
| 1005 | EOP_MOV_REG_ROR(5, 5, 16); // mov r5, r5, ror #16 |
| 1006 | hostreg_sspreg_changed(SSP_AL); |
| 1007 | if (const_val != -1) { |
| 1008 | known_regs.gr[SSP_A].l = const_val; |
| 1009 | known_regb |= 1 << SSP_AL; |
| 1010 | } else |
| 1011 | known_regb &= ~(1 << SSP_AL); |
| 1012 | } |
| 1013 | |
| 1014 | static void tr_r0_to_PMX(int reg) |
| 1015 | { |
| 1016 | if ((known_regb & KRREG_PMC) && (known_regs.emu_status & SSP_PMC_SET)) |
| 1017 | { |
| 1018 | known_regs.pmac_write[reg] = known_regs.pmc.v; |
| 1019 | known_regs.emu_status &= ~SSP_PMC_SET; |
| 1020 | known_regb |= 1 << (25+reg); |
| 1021 | dirty_regb |= 1 << (25+reg); |
| 1022 | return; |
| 1023 | } |
| 1024 | |
| 1025 | if ((known_regb & KRREG_PMC) && (known_regb & (1 << (25+reg)))) |
| 1026 | { |
| 1027 | int mode, addr; |
| 1028 | |
| 1029 | known_regs.emu_status &= ~SSP_PMC_HAVE_ADDR; |
| 1030 | |
| 1031 | mode = known_regs.pmac_write[reg]>>16; |
| 1032 | addr = known_regs.pmac_write[reg]&0xffff; |
| 1033 | if ((mode & 0x43ff) == 0x0018) // DRAM |
| 1034 | { |
| 1035 | int inc = get_inc(mode); |
| 1036 | if (mode & 0x0400) tr_unhandled(); |
| 1037 | EOP_LDR_IMM(1,7,0x490); // dram_ptr |
| 1038 | emith_move_r_imm(2, addr << 1); |
| 1039 | EOP_STRH_REG(0,1,2); // strh r0, [r1, r2] |
| 1040 | known_regs.pmac_write[reg] += inc; |
| 1041 | } |
| 1042 | else if ((mode & 0xfbff) == 0x4018) // DRAM, cell inc |
| 1043 | { |
| 1044 | if (mode & 0x0400) tr_unhandled(); |
| 1045 | EOP_LDR_IMM(1,7,0x490); // dram_ptr |
| 1046 | emith_move_r_imm(2, addr << 1); |
| 1047 | EOP_STRH_REG(0,1,2); // strh r0, [r1, r2] |
| 1048 | known_regs.pmac_write[reg] += (addr&1) ? 31 : 1; |
| 1049 | } |
| 1050 | else if ((mode & 0x47ff) == 0x001c) // IRAM |
| 1051 | { |
| 1052 | int inc = get_inc(mode); |
| 1053 | EOP_LDR_IMM(1,7,0x48c); // iram_ptr |
| 1054 | emith_move_r_imm(2, (addr&0x3ff) << 1); |
| 1055 | EOP_STRH_REG(0,1,2); // strh r0, [r1, r2] |
| 1056 | EOP_MOV_IMM(1,0,1); |
| 1057 | EOP_STR_IMM(1,7,0x494); // iram_dirty |
| 1058 | known_regs.pmac_write[reg] += inc; |
| 1059 | } |
| 1060 | else |
| 1061 | tr_unhandled(); |
| 1062 | |
| 1063 | known_regs.pmc.v = known_regs.pmac_write[reg]; |
| 1064 | //known_regb |= KRREG_PMC; |
| 1065 | dirty_regb |= KRREG_PMC; |
| 1066 | dirty_regb |= 1 << (25+reg); |
| 1067 | hostreg_r[1] = hostreg_r[2] = -1; |
| 1068 | return; |
| 1069 | } |
| 1070 | |
| 1071 | known_regb &= ~KRREG_PMC; |
| 1072 | dirty_regb &= ~KRREG_PMC; |
| 1073 | known_regb &= ~(1 << (25+reg)); |
| 1074 | dirty_regb &= ~(1 << (25+reg)); |
| 1075 | |
| 1076 | // call the C code to handle this |
| 1077 | tr_flush_dirty_ST(); |
| 1078 | //tr_flush_dirty_pmcrs(); |
| 1079 | tr_mov16(1, reg); |
| 1080 | emith_call(ssp_pm_write); |
| 1081 | hostreg_clear(); |
| 1082 | } |
| 1083 | |
| 1084 | static void tr_r0_to_PM0(int const_val) |
| 1085 | { |
| 1086 | tr_r0_to_PMX(0); |
| 1087 | } |
| 1088 | |
| 1089 | static void tr_r0_to_PM1(int const_val) |
| 1090 | { |
| 1091 | tr_r0_to_PMX(1); |
| 1092 | } |
| 1093 | |
| 1094 | static void tr_r0_to_PM2(int const_val) |
| 1095 | { |
| 1096 | tr_r0_to_PMX(2); |
| 1097 | } |
| 1098 | |
| 1099 | static void tr_r0_to_PM4(int const_val) |
| 1100 | { |
| 1101 | tr_r0_to_PMX(4); |
| 1102 | } |
| 1103 | |
| 1104 | static void tr_r0_to_PMC(int const_val) |
| 1105 | { |
| 1106 | if ((known_regb & KRREG_PMC) && const_val != -1) |
| 1107 | { |
| 1108 | if (known_regs.emu_status & SSP_PMC_HAVE_ADDR) { |
| 1109 | known_regs.emu_status |= SSP_PMC_SET; |
| 1110 | known_regs.emu_status &= ~SSP_PMC_HAVE_ADDR; |
| 1111 | known_regs.pmc.h = const_val; |
| 1112 | } else { |
| 1113 | known_regs.emu_status |= SSP_PMC_HAVE_ADDR; |
| 1114 | known_regs.pmc.l = const_val; |
| 1115 | } |
| 1116 | } |
| 1117 | else |
| 1118 | { |
| 1119 | tr_flush_dirty_ST(); |
| 1120 | if (known_regb & KRREG_PMC) { |
| 1121 | emith_move_r_imm(1, known_regs.pmc.v); |
| 1122 | EOP_STR_IMM(1,7,0x400+SSP_PMC*4); |
| 1123 | known_regb &= ~KRREG_PMC; |
| 1124 | dirty_regb &= ~KRREG_PMC; |
| 1125 | } |
| 1126 | EOP_LDR_IMM(1,7,0x484); // ldr r1, [r7, #0x484] // emu_status |
| 1127 | EOP_ADD_IMM(2,7,24/2,4); // add r2, r7, #0x400 |
| 1128 | EOP_TST_IMM(1, 0, SSP_PMC_HAVE_ADDR); |
| 1129 | EOP_C_AM3_IMM(A_COND_EQ,1,0,2,0,0,1,SSP_PMC*4); // strxx r0, [r2, #SSP_PMC] |
| 1130 | EOP_C_AM3_IMM(A_COND_NE,1,0,2,0,0,1,SSP_PMC*4+2); |
| 1131 | EOP_C_DOP_IMM(A_COND_EQ,A_OP_ORR,0, 1, 1, 0, SSP_PMC_HAVE_ADDR); // orreq r1, r1, #.. |
| 1132 | EOP_C_DOP_IMM(A_COND_NE,A_OP_BIC,0, 1, 1, 0, SSP_PMC_HAVE_ADDR); // bicne r1, r1, #.. |
| 1133 | EOP_C_DOP_IMM(A_COND_NE,A_OP_ORR,0, 1, 1, 0, SSP_PMC_SET); // orrne r1, r1, #.. |
| 1134 | EOP_STR_IMM(1,7,0x484); |
| 1135 | hostreg_r[1] = hostreg_r[2] = -1; |
| 1136 | } |
| 1137 | } |
| 1138 | |
| 1139 | typedef void (tr_write_func)(int const_val); |
| 1140 | |
| 1141 | static tr_write_func *tr_write_funcs[16] = |
| 1142 | { |
| 1143 | tr_r0_to_GR0, |
| 1144 | tr_r0_to_X, |
| 1145 | tr_r0_to_Y, |
| 1146 | tr_r0_to_A, |
| 1147 | tr_r0_to_ST, |
| 1148 | tr_r0_to_STACK, |
| 1149 | tr_r0_to_PC, |
| 1150 | (tr_write_func *)tr_unhandled, |
| 1151 | tr_r0_to_PM0, |
| 1152 | tr_r0_to_PM1, |
| 1153 | tr_r0_to_PM2, |
| 1154 | (tr_write_func *)tr_unhandled, |
| 1155 | tr_r0_to_PM4, |
| 1156 | (tr_write_func *)tr_unhandled, |
| 1157 | tr_r0_to_PMC, |
| 1158 | tr_r0_to_AL |
| 1159 | }; |
| 1160 | |
| 1161 | static void tr_mac_load_XY(int op) |
| 1162 | { |
| 1163 | tr_rX_read(op&3, (op>>2)&3); // X |
| 1164 | EOP_MOV_REG_LSL(4, 0, 16); |
| 1165 | tr_rX_read(((op>>4)&3)|4, (op>>6)&3); // Y |
| 1166 | EOP_ORR_REG_SIMPLE(4, 0); |
| 1167 | dirty_regb |= KRREG_P; |
| 1168 | hostreg_sspreg_changed(SSP_X); |
| 1169 | hostreg_sspreg_changed(SSP_Y); |
| 1170 | known_regb &= ~KRREG_X; |
| 1171 | known_regb &= ~KRREG_Y; |
| 1172 | } |
| 1173 | |
| 1174 | // ----------------------------------------------------- |
| 1175 | |
| 1176 | static int tr_detect_set_pm(unsigned int op, int *pc, int imm) |
| 1177 | { |
| 1178 | u32 pmcv, tmpv; |
| 1179 | if (!((op&0xfef0) == 0x08e0 && (PROGRAM(*pc)&0xfef0) == 0x08e0)) return 0; |
| 1180 | |
| 1181 | // programming PMC: |
| 1182 | // ldi PMC, imm1 |
| 1183 | // ldi PMC, imm2 |
| 1184 | (*pc)++; |
| 1185 | pmcv = imm | (PROGRAM((*pc)++) << 16); |
| 1186 | known_regs.pmc.v = pmcv; |
| 1187 | known_regb |= KRREG_PMC; |
| 1188 | dirty_regb |= KRREG_PMC; |
| 1189 | known_regs.emu_status |= SSP_PMC_SET; |
| 1190 | n_in_ops++; |
| 1191 | |
| 1192 | // check for possible reg programming |
| 1193 | tmpv = PROGRAM(*pc); |
| 1194 | if ((tmpv & 0xfff8) == 0x08 || (tmpv & 0xff8f) == 0x80) |
| 1195 | { |
| 1196 | int is_write = (tmpv & 0xff8f) == 0x80; |
| 1197 | int reg = is_write ? ((tmpv>>4)&0x7) : (tmpv&0x7); |
| 1198 | if (reg > 4) tr_unhandled(); |
| 1199 | if ((tmpv & 0x0f) != 0 && (tmpv & 0xf0) != 0) tr_unhandled(); |
| 1200 | if (is_write) |
| 1201 | known_regs.pmac_write[reg] = pmcv; |
| 1202 | else |
| 1203 | known_regs.pmac_read[reg] = pmcv; |
| 1204 | known_regb |= is_write ? (1 << (reg+25)) : (1 << (reg+20)); |
| 1205 | dirty_regb |= is_write ? (1 << (reg+25)) : (1 << (reg+20)); |
| 1206 | known_regs.emu_status &= ~SSP_PMC_SET; |
| 1207 | (*pc)++; |
| 1208 | n_in_ops++; |
| 1209 | return 5; |
| 1210 | } |
| 1211 | |
| 1212 | tr_unhandled(); |
| 1213 | return 4; |
| 1214 | } |
| 1215 | |
| 1216 | static const short pm0_block_seq[] = { 0x0880, 0, 0x0880, 0, 0x0840, 0x60 }; |
| 1217 | |
| 1218 | static int tr_detect_pm0_block(unsigned int op, int *pc, int imm) |
| 1219 | { |
| 1220 | // ldi ST, 0 |
| 1221 | // ldi PM0, 0 |
| 1222 | // ldi PM0, 0 |
| 1223 | // ldi ST, 60h |
| 1224 | unsigned short *pp; |
| 1225 | if (op != 0x0840 || imm != 0) return 0; |
| 1226 | pp = PROGRAM_P(*pc); |
| 1227 | if (memcmp(pp, pm0_block_seq, sizeof(pm0_block_seq)) != 0) return 0; |
| 1228 | |
| 1229 | EOP_AND_IMM(6, 6, 8/2, 0xe0); // and r6, r6, #7<<29 @ preserve STACK |
| 1230 | EOP_ORR_IMM(6, 6, 24/2, 6); // orr r6, r6, 0x600 |
| 1231 | hostreg_sspreg_changed(SSP_ST); |
| 1232 | known_regs.gr[SSP_ST].h = 0x60; |
| 1233 | known_regb |= 1 << SSP_ST; |
| 1234 | dirty_regb &= ~KRREG_ST; |
| 1235 | (*pc) += 3*2; |
| 1236 | n_in_ops += 3; |
| 1237 | return 4*2; |
| 1238 | } |
| 1239 | |
| 1240 | static int tr_detect_rotate(unsigned int op, int *pc, int imm) |
| 1241 | { |
| 1242 | // @ 3DA2 and 426A |
| 1243 | // ld PMC, (r3|00) |
| 1244 | // ld (r3|00), PMC |
| 1245 | // ld -, AL |
| 1246 | if (op != 0x02e3 || PROGRAM(*pc) != 0x04e3 || PROGRAM(*pc + 1) != 0x000f) return 0; |
| 1247 | |
| 1248 | tr_bank_read(0); |
| 1249 | EOP_MOV_REG_LSL(0, 0, 4); |
| 1250 | EOP_ORR_REG_LSR(0, 0, 0, 16); |
| 1251 | tr_bank_write(0); |
| 1252 | (*pc) += 2; |
| 1253 | n_in_ops += 2; |
| 1254 | return 3; |
| 1255 | } |
| 1256 | |
| 1257 | // ----------------------------------------------------- |
| 1258 | |
| 1259 | static int translate_op(unsigned int op, int *pc, int imm, int *end_cond, int *jump_pc) |
| 1260 | { |
| 1261 | u32 tmpv, tmpv2, tmpv3; |
| 1262 | int ret = 0; |
| 1263 | known_regs.gr[SSP_PC].h = *pc; |
| 1264 | |
| 1265 | switch (op >> 9) |
| 1266 | { |
| 1267 | // ld d, s |
| 1268 | case 0x00: |
| 1269 | if (op == 0) { ret++; break; } // nop |
| 1270 | tmpv = op & 0xf; // src |
| 1271 | tmpv2 = (op >> 4) & 0xf; // dst |
| 1272 | if (tmpv2 == SSP_A && tmpv == SSP_P) { // ld A, P |
| 1273 | tr_flush_dirty_P(); |
| 1274 | EOP_MOV_REG_SIMPLE(5, 10); |
| 1275 | hostreg_sspreg_changed(SSP_A); |
| 1276 | known_regb &= ~(KRREG_A|KRREG_AL); |
| 1277 | ret++; break; |
| 1278 | } |
| 1279 | tr_read_funcs[tmpv](op); |
| 1280 | tr_write_funcs[tmpv2]((known_regb & (1 << tmpv)) ? known_regs.gr[tmpv].h : -1); |
| 1281 | if (tmpv2 == SSP_PC) { |
| 1282 | ret |= 0x10000; |
| 1283 | *end_cond = -A_COND_AL; |
| 1284 | } |
| 1285 | ret++; break; |
| 1286 | |
| 1287 | // ld d, (ri) |
| 1288 | case 0x01: { |
| 1289 | int r = (op&3) | ((op>>6)&4); |
| 1290 | int mod = (op>>2)&3; |
| 1291 | tmpv = (op >> 4) & 0xf; // dst |
| 1292 | ret = tr_detect_rotate(op, pc, imm); |
| 1293 | if (ret > 0) break; |
| 1294 | if (tmpv != 0) |
| 1295 | tr_rX_read(r, mod); |
| 1296 | else { |
| 1297 | int cnt = 1; |
| 1298 | while (PROGRAM(*pc) == op) { |
| 1299 | (*pc)++; cnt++; ret++; |
| 1300 | n_in_ops++; |
| 1301 | } |
| 1302 | tr_ptrr_mod(r, mod, 1, cnt); // skip |
| 1303 | } |
| 1304 | tr_write_funcs[tmpv](-1); |
| 1305 | if (tmpv == SSP_PC) { |
| 1306 | ret |= 0x10000; |
| 1307 | *end_cond = -A_COND_AL; |
| 1308 | } |
| 1309 | ret++; break; |
| 1310 | } |
| 1311 | |
| 1312 | // ld (ri), s |
| 1313 | case 0x02: |
| 1314 | tmpv = (op >> 4) & 0xf; // src |
| 1315 | tr_read_funcs[tmpv](op); |
| 1316 | tr_rX_write(op); |
| 1317 | ret++; break; |
| 1318 | |
| 1319 | // ld a, adr |
| 1320 | case 0x03: |
| 1321 | tr_bank_read(op&0x1ff); |
| 1322 | tr_r0_to_A(-1); |
| 1323 | ret++; break; |
| 1324 | |
| 1325 | // ldi d, imm |
| 1326 | case 0x04: |
| 1327 | tmpv = (op & 0xf0) >> 4; // dst |
| 1328 | ret = tr_detect_pm0_block(op, pc, imm); |
| 1329 | if (ret > 0) break; |
| 1330 | ret = tr_detect_set_pm(op, pc, imm); |
| 1331 | if (ret > 0) break; |
| 1332 | tr_mov16(0, imm); |
| 1333 | tr_write_funcs[tmpv](imm); |
| 1334 | if (tmpv == SSP_PC) { |
| 1335 | ret |= 0x10000; |
| 1336 | *jump_pc = imm; |
| 1337 | } |
| 1338 | ret += 2; break; |
| 1339 | |
| 1340 | // ld d, ((ri)) |
| 1341 | case 0x05: |
| 1342 | tmpv2 = (op >> 4) & 0xf; // dst |
| 1343 | tr_rX_read2(op); |
| 1344 | tr_write_funcs[tmpv2](-1); |
| 1345 | if (tmpv2 == SSP_PC) { |
| 1346 | ret |= 0x10000; |
| 1347 | *end_cond = -A_COND_AL; |
| 1348 | } |
| 1349 | ret += 3; break; |
| 1350 | |
| 1351 | // ldi (ri), imm |
| 1352 | case 0x06: |
| 1353 | tr_mov16(0, imm); |
| 1354 | tr_rX_write(op); |
| 1355 | ret += 2; break; |
| 1356 | |
| 1357 | // ld adr, a |
| 1358 | case 0x07: |
| 1359 | tr_A_to_r0(op); |
| 1360 | tr_bank_write(op&0x1ff); |
| 1361 | ret++; break; |
| 1362 | |
| 1363 | // ld d, ri |
| 1364 | case 0x09: { |
| 1365 | int r; |
| 1366 | r = (op&3) | ((op>>6)&4); // src |
| 1367 | tmpv2 = (op >> 4) & 0xf; // dst |
| 1368 | if ((r&3) == 3) tr_unhandled(); |
| 1369 | |
| 1370 | if (known_regb & (1 << (r+8))) { |
| 1371 | tr_mov16(0, known_regs.r[r]); |
| 1372 | tr_write_funcs[tmpv2](known_regs.r[r]); |
| 1373 | } else { |
| 1374 | int reg = (r < 4) ? 8 : 9; |
| 1375 | if (r&3) EOP_MOV_REG_LSR(0, reg, (r&3)*8); // mov r0, r{7,8}, lsr #lsr |
| 1376 | EOP_AND_IMM(0, (r&3)?0:reg, 0, 0xff); // and r0, r{7,8}, <mask> |
| 1377 | hostreg_r[0] = -1; |
| 1378 | tr_write_funcs[tmpv2](-1); |
| 1379 | } |
| 1380 | ret++; break; |
| 1381 | } |
| 1382 | |
| 1383 | // ld ri, s |
| 1384 | case 0x0a: { |
| 1385 | int r; |
| 1386 | r = (op&3) | ((op>>6)&4); // dst |
| 1387 | tmpv = (op >> 4) & 0xf; // src |
| 1388 | if ((r&3) == 3) tr_unhandled(); |
| 1389 | |
| 1390 | if (known_regb & (1 << tmpv)) { |
| 1391 | known_regs.r[r] = known_regs.gr[tmpv].h; |
| 1392 | known_regb |= 1 << (r + 8); |
| 1393 | dirty_regb |= 1 << (r + 8); |
| 1394 | } else { |
| 1395 | int reg = (r < 4) ? 8 : 9; |
| 1396 | int ror = ((4 - (r&3))*8) & 0x1f; |
| 1397 | tr_read_funcs[tmpv](op); |
| 1398 | EOP_BIC_IMM(reg, reg, ror/2, 0xff); // bic r{7,8}, r{7,8}, <mask> |
| 1399 | EOP_AND_IMM(0, 0, 0, 0xff); // and r0, r0, 0xff |
| 1400 | EOP_ORR_REG_LSL(reg, reg, 0, (r&3)*8); // orr r{7,8}, r{7,8}, r0, lsl #lsl |
| 1401 | hostreg_r[0] = -1; |
| 1402 | known_regb &= ~(1 << (r+8)); |
| 1403 | dirty_regb &= ~(1 << (r+8)); |
| 1404 | } |
| 1405 | ret++; break; |
| 1406 | } |
| 1407 | |
| 1408 | // ldi ri, simm |
| 1409 | case 0x0c: case 0x0d: case 0x0e: case 0x0f: |
| 1410 | tmpv = (op>>8)&7; |
| 1411 | known_regs.r[tmpv] = op; |
| 1412 | known_regb |= 1 << (tmpv + 8); |
| 1413 | dirty_regb |= 1 << (tmpv + 8); |
| 1414 | ret++; break; |
| 1415 | |
| 1416 | // call cond, addr |
| 1417 | case 0x24: { |
| 1418 | u32 *jump_op = NULL; |
| 1419 | tmpv = tr_cond_check(op); |
| 1420 | if (tmpv != A_COND_AL) { |
| 1421 | jump_op = tcache_ptr; |
| 1422 | EOP_MOV_IMM(0, 0, 0); // placeholder for branch |
| 1423 | } |
| 1424 | tr_mov16(0, *pc); |
| 1425 | tr_r0_to_STACK(*pc); |
| 1426 | if (tmpv != A_COND_AL) { |
| 1427 | u32 *real_ptr = tcache_ptr; |
| 1428 | tcache_ptr = jump_op; |
| 1429 | EOP_C_B(tr_neg_cond(tmpv),0,real_ptr - jump_op - 2); |
| 1430 | tcache_ptr = real_ptr; |
| 1431 | } |
| 1432 | tr_mov16_cond(tmpv, 0, imm); |
| 1433 | if (tmpv != A_COND_AL) |
| 1434 | tr_mov16_cond(tr_neg_cond(tmpv), 0, *pc); |
| 1435 | tr_r0_to_PC(tmpv == A_COND_AL ? imm : -1); |
| 1436 | ret |= 0x10000; |
| 1437 | *end_cond = tmpv; |
| 1438 | *jump_pc = imm; |
| 1439 | ret += 2; break; |
| 1440 | } |
| 1441 | |
| 1442 | // ld d, (a) |
| 1443 | case 0x25: |
| 1444 | tmpv2 = (op >> 4) & 0xf; // dst |
| 1445 | tr_A_to_r0(op); |
| 1446 | EOP_LDR_IMM(1,7,0x48c); // ptr_iram_rom |
| 1447 | EOP_ADD_REG_LSL(0,1,0,1); // add r0, r1, r0, lsl #1 |
| 1448 | EOP_LDRH_SIMPLE(0,0); // ldrh r0, [r0] |
| 1449 | hostreg_r[0] = hostreg_r[1] = -1; |
| 1450 | tr_write_funcs[tmpv2](-1); |
| 1451 | if (tmpv2 == SSP_PC) { |
| 1452 | ret |= 0x10000; |
| 1453 | *end_cond = -A_COND_AL; |
| 1454 | } |
| 1455 | ret += 3; break; |
| 1456 | |
| 1457 | // bra cond, addr |
| 1458 | case 0x26: |
| 1459 | tmpv = tr_cond_check(op); |
| 1460 | tr_mov16_cond(tmpv, 0, imm); |
| 1461 | if (tmpv != A_COND_AL) |
| 1462 | tr_mov16_cond(tr_neg_cond(tmpv), 0, *pc); |
| 1463 | tr_r0_to_PC(tmpv == A_COND_AL ? imm : -1); |
| 1464 | ret |= 0x10000; |
| 1465 | *end_cond = tmpv; |
| 1466 | *jump_pc = imm; |
| 1467 | ret += 2; break; |
| 1468 | |
| 1469 | // mod cond, op |
| 1470 | case 0x48: { |
| 1471 | // check for repeats of this op |
| 1472 | tmpv = 1; // count |
| 1473 | while (PROGRAM(*pc) == op && (op & 7) != 6) { |
| 1474 | (*pc)++; tmpv++; |
| 1475 | n_in_ops++; |
| 1476 | } |
| 1477 | if ((op&0xf0) != 0) // !always |
| 1478 | tr_make_dirty_ST(); |
| 1479 | |
| 1480 | tmpv2 = tr_cond_check(op); |
| 1481 | switch (op & 7) { |
| 1482 | case 2: EOP_C_DOP_REG_XIMM(tmpv2,A_OP_MOV,1,0,5,tmpv,A_AM1_ASR,5); break; // shr (arithmetic) |
| 1483 | case 3: EOP_C_DOP_REG_XIMM(tmpv2,A_OP_MOV,1,0,5,tmpv,A_AM1_LSL,5); break; // shl |
| 1484 | case 6: EOP_C_DOP_IMM(tmpv2,A_OP_RSB,1,5,5,0,0); break; // neg |
| 1485 | 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 |
| 1486 | EOP_C_DOP_REG_XIMM(tmpv2,A_OP_ADD,1,1,5,31,A_AM1_LSR,5); // adds r5, r1, r5, lsr #31 |
| 1487 | hostreg_r[1] = -1; break; // abs |
| 1488 | default: tr_unhandled(); |
| 1489 | } |
| 1490 | |
| 1491 | hostreg_sspreg_changed(SSP_A); |
| 1492 | dirty_regb |= KRREG_ST; |
| 1493 | known_regb &= ~KRREG_ST; |
| 1494 | known_regb &= ~(KRREG_A|KRREG_AL); |
| 1495 | ret += tmpv; break; |
| 1496 | } |
| 1497 | |
| 1498 | // mpys? |
| 1499 | case 0x1b: |
| 1500 | tr_flush_dirty_P(); |
| 1501 | tr_mac_load_XY(op); |
| 1502 | tr_make_dirty_ST(); |
| 1503 | EOP_C_DOP_REG_XIMM(A_COND_AL,A_OP_SUB,1,5,5,0,A_AM1_LSL,10); // subs r5, r5, r10 |
| 1504 | hostreg_sspreg_changed(SSP_A); |
| 1505 | known_regb &= ~(KRREG_A|KRREG_AL); |
| 1506 | dirty_regb |= KRREG_ST; |
| 1507 | ret++; break; |
| 1508 | |
| 1509 | // mpya (rj), (ri), b |
| 1510 | case 0x4b: |
| 1511 | tr_flush_dirty_P(); |
| 1512 | tr_mac_load_XY(op); |
| 1513 | tr_make_dirty_ST(); |
| 1514 | EOP_C_DOP_REG_XIMM(A_COND_AL,A_OP_ADD,1,5,5,0,A_AM1_LSL,10); // adds r5, r5, r10 |
| 1515 | hostreg_sspreg_changed(SSP_A); |
| 1516 | known_regb &= ~(KRREG_A|KRREG_AL); |
| 1517 | dirty_regb |= KRREG_ST; |
| 1518 | ret++; break; |
| 1519 | |
| 1520 | // mld (rj), (ri), b |
| 1521 | case 0x5b: |
| 1522 | EOP_C_DOP_IMM(A_COND_AL,A_OP_MOV,1,0,5,0,0); // movs r5, #0 |
| 1523 | hostreg_sspreg_changed(SSP_A); |
| 1524 | known_regs.gr[SSP_A].v = 0; |
| 1525 | known_regb |= (KRREG_A|KRREG_AL); |
| 1526 | dirty_regb |= KRREG_ST; |
| 1527 | tr_mac_load_XY(op); |
| 1528 | ret++; break; |
| 1529 | |
| 1530 | // OP a, s |
| 1531 | case 0x10: |
| 1532 | case 0x30: |
| 1533 | case 0x40: |
| 1534 | case 0x50: |
| 1535 | case 0x60: |
| 1536 | case 0x70: |
| 1537 | tmpv = op & 0xf; // src |
| 1538 | tmpv2 = tr_aop_ssp2arm(op>>13); // op |
| 1539 | tmpv3 = (tmpv2 == A_OP_CMP) ? 0 : 5; |
| 1540 | if (tmpv == SSP_P) { |
| 1541 | tr_flush_dirty_P(); |
| 1542 | EOP_C_DOP_REG_XIMM(A_COND_AL,tmpv2,1,5,tmpv3, 0,A_AM1_LSL,10); // OPs r5, r5, r10 |
| 1543 | } else if (tmpv == SSP_A) { |
| 1544 | EOP_C_DOP_REG_XIMM(A_COND_AL,tmpv2,1,5,tmpv3, 0,A_AM1_LSL, 5); // OPs r5, r5, r5 |
| 1545 | } else { |
| 1546 | tr_read_funcs[tmpv](op); |
| 1547 | EOP_C_DOP_REG_XIMM(A_COND_AL,tmpv2,1,5,tmpv3,16,A_AM1_LSL, 0); // OPs r5, r5, r0, lsl #16 |
| 1548 | } |
| 1549 | hostreg_sspreg_changed(SSP_A); |
| 1550 | known_regb &= ~(KRREG_A|KRREG_AL|KRREG_ST); |
| 1551 | dirty_regb |= KRREG_ST; |
| 1552 | ret++; break; |
| 1553 | |
| 1554 | // OP a, (ri) |
| 1555 | case 0x11: |
| 1556 | case 0x31: |
| 1557 | case 0x41: |
| 1558 | case 0x51: |
| 1559 | case 0x61: |
| 1560 | case 0x71: |
| 1561 | tmpv2 = tr_aop_ssp2arm(op>>13); // op |
| 1562 | tmpv3 = (tmpv2 == A_OP_CMP) ? 0 : 5; |
| 1563 | tr_rX_read((op&3)|((op>>6)&4), (op>>2)&3); |
| 1564 | EOP_C_DOP_REG_XIMM(A_COND_AL,tmpv2,1,5,tmpv3,16,A_AM1_LSL,0); // OPs r5, r5, r0, lsl #16 |
| 1565 | hostreg_sspreg_changed(SSP_A); |
| 1566 | known_regb &= ~(KRREG_A|KRREG_AL|KRREG_ST); |
| 1567 | dirty_regb |= KRREG_ST; |
| 1568 | ret++; break; |
| 1569 | |
| 1570 | // OP a, adr |
| 1571 | case 0x13: |
| 1572 | case 0x33: |
| 1573 | case 0x43: |
| 1574 | case 0x53: |
| 1575 | case 0x63: |
| 1576 | case 0x73: |
| 1577 | tmpv2 = tr_aop_ssp2arm(op>>13); // op |
| 1578 | tmpv3 = (tmpv2 == A_OP_CMP) ? 0 : 5; |
| 1579 | tr_bank_read(op&0x1ff); |
| 1580 | EOP_C_DOP_REG_XIMM(A_COND_AL,tmpv2,1,5,tmpv3,16,A_AM1_LSL,0); // OPs r5, r5, r0, lsl #16 |
| 1581 | hostreg_sspreg_changed(SSP_A); |
| 1582 | known_regb &= ~(KRREG_A|KRREG_AL|KRREG_ST); |
| 1583 | dirty_regb |= KRREG_ST; |
| 1584 | ret++; break; |
| 1585 | |
| 1586 | // OP a, imm |
| 1587 | case 0x14: |
| 1588 | case 0x34: |
| 1589 | case 0x44: |
| 1590 | case 0x54: |
| 1591 | case 0x64: |
| 1592 | case 0x74: |
| 1593 | tmpv = (op & 0xf0) >> 4; |
| 1594 | tmpv2 = tr_aop_ssp2arm(op>>13); // op |
| 1595 | tmpv3 = (tmpv2 == A_OP_CMP) ? 0 : 5; |
| 1596 | tr_mov16(0, imm); |
| 1597 | EOP_C_DOP_REG_XIMM(A_COND_AL,tmpv2,1,5,tmpv3,16,A_AM1_LSL,0); // OPs r5, r5, r0, lsl #16 |
| 1598 | hostreg_sspreg_changed(SSP_A); |
| 1599 | known_regb &= ~(KRREG_A|KRREG_AL|KRREG_ST); |
| 1600 | dirty_regb |= KRREG_ST; |
| 1601 | ret += 2; break; |
| 1602 | |
| 1603 | // OP a, ((ri)) |
| 1604 | case 0x15: |
| 1605 | case 0x35: |
| 1606 | case 0x45: |
| 1607 | case 0x55: |
| 1608 | case 0x65: |
| 1609 | case 0x75: |
| 1610 | tmpv2 = tr_aop_ssp2arm(op>>13); // op |
| 1611 | tmpv3 = (tmpv2 == A_OP_CMP) ? 0 : 5; |
| 1612 | tr_rX_read2(op); |
| 1613 | EOP_C_DOP_REG_XIMM(A_COND_AL,tmpv2,1,5,tmpv3,16,A_AM1_LSL,0); // OPs r5, r5, r0, lsl #16 |
| 1614 | hostreg_sspreg_changed(SSP_A); |
| 1615 | known_regb &= ~(KRREG_A|KRREG_AL|KRREG_ST); |
| 1616 | dirty_regb |= KRREG_ST; |
| 1617 | ret += 3; break; |
| 1618 | |
| 1619 | // OP a, ri |
| 1620 | case 0x19: |
| 1621 | case 0x39: |
| 1622 | case 0x49: |
| 1623 | case 0x59: |
| 1624 | case 0x69: |
| 1625 | case 0x79: { |
| 1626 | int r; |
| 1627 | tmpv2 = tr_aop_ssp2arm(op>>13); // op |
| 1628 | tmpv3 = (tmpv2 == A_OP_CMP) ? 0 : 5; |
| 1629 | r = (op&3) | ((op>>6)&4); // src |
| 1630 | if ((r&3) == 3) tr_unhandled(); |
| 1631 | |
| 1632 | if (known_regb & (1 << (r+8))) { |
| 1633 | EOP_C_DOP_IMM(A_COND_AL,tmpv2,1,5,tmpv3,16/2,known_regs.r[r]); // OPs r5, r5, #val<<16 |
| 1634 | } else { |
| 1635 | int reg = (r < 4) ? 8 : 9; |
| 1636 | if (r&3) EOP_MOV_REG_LSR(0, reg, (r&3)*8); // mov r0, r{7,8}, lsr #lsr |
| 1637 | EOP_AND_IMM(0, (r&3)?0:reg, 0, 0xff); // and r0, r{7,8}, <mask> |
| 1638 | EOP_C_DOP_REG_XIMM(A_COND_AL,tmpv2,1,5,tmpv3,16,A_AM1_LSL,0); // OPs r5, r5, r0, lsl #16 |
| 1639 | hostreg_r[0] = -1; |
| 1640 | } |
| 1641 | hostreg_sspreg_changed(SSP_A); |
| 1642 | known_regb &= ~(KRREG_A|KRREG_AL|KRREG_ST); |
| 1643 | dirty_regb |= KRREG_ST; |
| 1644 | ret++; break; |
| 1645 | } |
| 1646 | |
| 1647 | // OP simm |
| 1648 | case 0x1c: |
| 1649 | case 0x3c: |
| 1650 | case 0x4c: |
| 1651 | case 0x5c: |
| 1652 | case 0x6c: |
| 1653 | case 0x7c: |
| 1654 | tmpv2 = tr_aop_ssp2arm(op>>13); // op |
| 1655 | tmpv3 = (tmpv2 == A_OP_CMP) ? 0 : 5; |
| 1656 | EOP_C_DOP_IMM(A_COND_AL,tmpv2,1,5,tmpv3,16/2,op & 0xff); // OPs r5, r5, #val<<16 |
| 1657 | hostreg_sspreg_changed(SSP_A); |
| 1658 | known_regb &= ~(KRREG_A|KRREG_AL|KRREG_ST); |
| 1659 | dirty_regb |= KRREG_ST; |
| 1660 | ret++; break; |
| 1661 | } |
| 1662 | |
| 1663 | n_in_ops++; |
| 1664 | |
| 1665 | return ret; |
| 1666 | } |
| 1667 | |
| 1668 | static void emit_block_prologue(void) |
| 1669 | { |
| 1670 | // check if there are enough cycles.. |
| 1671 | // note: r0 must contain PC of current block |
| 1672 | EOP_CMP_IMM(11,0,0); // cmp r11, #0 |
| 1673 | emith_jump_cond(A_COND_LE, ssp_drc_end); |
| 1674 | } |
| 1675 | |
| 1676 | /* cond: |
| 1677 | * >0: direct (un)conditional jump |
| 1678 | * <0: indirect jump |
| 1679 | */ |
| 1680 | static void emit_block_epilogue(int cycles, int cond, int pc, int end_pc) |
| 1681 | { |
| 1682 | if (cycles > 0xff) { elprintf(EL_ANOMALY, "large cycle count: %i\n", cycles); cycles = 0xff; } |
| 1683 | EOP_SUB_IMM(11,11,0,cycles); // sub r11, r11, #cycles |
| 1684 | |
| 1685 | if (cond < 0 || (end_pc >= 0x400 && pc < 0x400)) { |
| 1686 | // indirect jump, or rom -> iram jump, must use dispatcher |
| 1687 | emith_jump(ssp_drc_next); |
| 1688 | } |
| 1689 | else if (cond == A_COND_AL) { |
| 1690 | u32 *target = (pc < 0x400) ? |
| 1691 | ssp_block_table_iram[ssp->drc.iram_context * SSP_BLOCKTAB_IRAM_ONE + pc] : |
| 1692 | ssp_block_table[pc]; |
| 1693 | if (target != NULL) |
| 1694 | emith_jump(target); |
| 1695 | else { |
| 1696 | int ops = emith_jump(ssp_drc_next); |
| 1697 | // cause the next block to be emitted over jump instruction |
| 1698 | tcache_ptr -= ops; |
| 1699 | } |
| 1700 | } |
| 1701 | else { |
| 1702 | u32 *target1 = (pc < 0x400) ? |
| 1703 | ssp_block_table_iram[ssp->drc.iram_context * SSP_BLOCKTAB_IRAM_ONE + pc] : |
| 1704 | ssp_block_table[pc]; |
| 1705 | u32 *target2 = (end_pc < 0x400) ? |
| 1706 | ssp_block_table_iram[ssp->drc.iram_context * SSP_BLOCKTAB_IRAM_ONE + end_pc] : |
| 1707 | ssp_block_table[end_pc]; |
| 1708 | if (target1 != NULL) |
| 1709 | emith_jump_cond(cond, target1); |
| 1710 | if (target2 != NULL) |
| 1711 | emith_jump_cond(tr_neg_cond(cond), target2); // neg_cond, to be able to swap jumps if needed |
| 1712 | #ifndef __EPOC32__ |
| 1713 | // emit patchable branches |
| 1714 | if (target1 == NULL) |
| 1715 | emith_call_cond(cond, ssp_drc_next_patch); |
| 1716 | if (target2 == NULL) |
| 1717 | emith_call_cond(tr_neg_cond(cond), ssp_drc_next_patch); |
| 1718 | #else |
| 1719 | // won't patch indirect jumps |
| 1720 | if (target1 == NULL || target2 == NULL) |
| 1721 | emith_jump(ssp_drc_next); |
| 1722 | #endif |
| 1723 | } |
| 1724 | } |
| 1725 | |
| 1726 | void *ssp_translate_block(int pc) |
| 1727 | { |
| 1728 | unsigned int op, op1, imm, ccount = 0; |
| 1729 | unsigned int *block_start; |
| 1730 | int ret, end_cond = A_COND_AL, jump_pc = -1; |
| 1731 | |
| 1732 | //printf("translate %04x -> %04x\n", pc<<1, (tcache_ptr-tcache)<<2); |
| 1733 | |
| 1734 | block_start = tcache_ptr; |
| 1735 | known_regb = 0; |
| 1736 | dirty_regb = KRREG_P; |
| 1737 | known_regs.emu_status = 0; |
| 1738 | hostreg_clear(); |
| 1739 | |
| 1740 | emit_block_prologue(); |
| 1741 | |
| 1742 | for (; ccount < 100;) |
| 1743 | { |
| 1744 | op = PROGRAM(pc++); |
| 1745 | op1 = op >> 9; |
| 1746 | imm = (u32)-1; |
| 1747 | |
| 1748 | if ((op1 & 0xf) == 4 || (op1 & 0xf) == 6) |
| 1749 | imm = PROGRAM(pc++); // immediate |
| 1750 | |
| 1751 | ret = translate_op(op, &pc, imm, &end_cond, &jump_pc); |
| 1752 | if (ret <= 0) |
| 1753 | { |
| 1754 | elprintf(EL_ANOMALY, "NULL func! op=%08x (%02x)\n", op, op1); |
| 1755 | //exit(1); |
| 1756 | } |
| 1757 | |
| 1758 | ccount += ret & 0xffff; |
| 1759 | if (ret & 0x10000) break; |
| 1760 | } |
| 1761 | |
| 1762 | if (ccount >= 100) { |
| 1763 | end_cond = A_COND_AL; |
| 1764 | jump_pc = pc; |
| 1765 | emith_move_r_imm(0, pc); |
| 1766 | } |
| 1767 | |
| 1768 | tr_flush_dirty_prs(); |
| 1769 | tr_flush_dirty_ST(); |
| 1770 | tr_flush_dirty_pmcrs(); |
| 1771 | emit_block_epilogue(ccount, end_cond, jump_pc, pc); |
| 1772 | |
| 1773 | if (tcache_ptr - (u32 *)tcache > DRC_TCACHE_SIZE/4) { |
| 1774 | elprintf(EL_ANOMALY|EL_STATUS|EL_SVP, "tcache overflow!\n"); |
| 1775 | fflush(stdout); |
| 1776 | exit(1); |
| 1777 | } |
| 1778 | |
| 1779 | // stats |
| 1780 | nblocks++; |
| 1781 | //printf("%i blocks, %i bytes, k=%.3f\n", nblocks, (tcache_ptr - tcache)*4, |
| 1782 | // (double)(tcache_ptr - tcache) / (double)n_in_ops); |
| 1783 | |
| 1784 | #ifdef DUMP_BLOCK |
| 1785 | { |
| 1786 | FILE *f = fopen("tcache.bin", "wb"); |
| 1787 | fwrite(tcache, 1, (tcache_ptr - tcache)*4, f); |
| 1788 | fclose(f); |
| 1789 | } |
| 1790 | printf("dumped tcache.bin\n"); |
| 1791 | exit(0); |
| 1792 | #endif |
| 1793 | |
| 1794 | #ifdef ARM |
| 1795 | cache_flush_d_inval_i(tcache, tcache_ptr); |
| 1796 | #endif |
| 1797 | |
| 1798 | return block_start; |
| 1799 | } |
| 1800 | |
| 1801 | |
| 1802 | |
| 1803 | // ----------------------------------------------------- |
| 1804 | |
| 1805 | static void ssp1601_state_load(void) |
| 1806 | { |
| 1807 | ssp->drc.iram_dirty = 1; |
| 1808 | ssp->drc.iram_context = 0; |
| 1809 | } |
| 1810 | |
| 1811 | void ssp1601_dyn_exit(void) |
| 1812 | { |
| 1813 | free(ssp_block_table); |
| 1814 | free(ssp_block_table_iram); |
| 1815 | ssp_block_table = ssp_block_table_iram = NULL; |
| 1816 | |
| 1817 | drc_cmn_cleanup(); |
| 1818 | } |
| 1819 | |
| 1820 | int ssp1601_dyn_startup(void) |
| 1821 | { |
| 1822 | drc_cmn_init(); |
| 1823 | |
| 1824 | ssp_block_table = calloc(sizeof(ssp_block_table[0]), SSP_BLOCKTAB_ENTS); |
| 1825 | if (ssp_block_table == NULL) |
| 1826 | return -1; |
| 1827 | ssp_block_table_iram = calloc(sizeof(ssp_block_table_iram[0]), SSP_BLOCKTAB_IRAM_ENTS); |
| 1828 | if (ssp_block_table_iram == NULL) { |
| 1829 | free(ssp_block_table); |
| 1830 | return -1; |
| 1831 | } |
| 1832 | |
| 1833 | memset(tcache, 0, DRC_TCACHE_SIZE); |
| 1834 | tcache_ptr = (void *)tcache; |
| 1835 | |
| 1836 | PicoLoadStateHook = ssp1601_state_load; |
| 1837 | |
| 1838 | n_in_ops = 0; |
| 1839 | #ifdef ARM |
| 1840 | // hle'd blocks |
| 1841 | ssp_block_table[0x800/2] = (void *) ssp_hle_800; |
| 1842 | ssp_block_table[0x902/2] = (void *) ssp_hle_902; |
| 1843 | ssp_block_table_iram[ 7 * SSP_BLOCKTAB_IRAM_ONE + 0x030/2] = (void *) ssp_hle_07_030; |
| 1844 | ssp_block_table_iram[ 7 * SSP_BLOCKTAB_IRAM_ONE + 0x036/2] = (void *) ssp_hle_07_036; |
| 1845 | ssp_block_table_iram[ 7 * SSP_BLOCKTAB_IRAM_ONE + 0x6d6/2] = (void *) ssp_hle_07_6d6; |
| 1846 | ssp_block_table_iram[11 * SSP_BLOCKTAB_IRAM_ONE + 0x12c/2] = (void *) ssp_hle_11_12c; |
| 1847 | ssp_block_table_iram[11 * SSP_BLOCKTAB_IRAM_ONE + 0x384/2] = (void *) ssp_hle_11_384; |
| 1848 | ssp_block_table_iram[11 * SSP_BLOCKTAB_IRAM_ONE + 0x38a/2] = (void *) ssp_hle_11_38a; |
| 1849 | #endif |
| 1850 | |
| 1851 | return 0; |
| 1852 | } |
| 1853 | |
| 1854 | |
| 1855 | void ssp1601_dyn_reset(ssp1601_t *ssp) |
| 1856 | { |
| 1857 | ssp1601_reset(ssp); |
| 1858 | ssp->drc.iram_dirty = 1; |
| 1859 | ssp->drc.iram_context = 0; |
| 1860 | // must do this here because ssp is not available @ startup() |
| 1861 | ssp->drc.ptr_rom = (u32) Pico.rom; |
| 1862 | ssp->drc.ptr_iram_rom = (u32) svp->iram_rom; |
| 1863 | ssp->drc.ptr_dram = (u32) svp->dram; |
| 1864 | ssp->drc.ptr_btable = (u32) ssp_block_table; |
| 1865 | ssp->drc.ptr_btable_iram = (u32) ssp_block_table_iram; |
| 1866 | |
| 1867 | // prevent new versions of IRAM from appearing |
| 1868 | memset(svp->iram_rom, 0, 0x800); |
| 1869 | } |
| 1870 | |
| 1871 | |
| 1872 | void ssp1601_dyn_run(int cycles) |
| 1873 | { |
| 1874 | if (ssp->emu_status & SSP_WAIT_MASK) return; |
| 1875 | |
| 1876 | #ifdef DUMP_BLOCK |
| 1877 | ssp_translate_block(DUMP_BLOCK >> 1); |
| 1878 | #endif |
| 1879 | #ifdef ARM |
| 1880 | ssp_drc_entry(cycles); |
| 1881 | #endif |
| 1882 | } |
| 1883 | |